Commit | Line | Data |
---|---|---|
7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
73b0cd50 | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2011 |
8cabe764 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
4d553a13 | 22 | #include <stdio.h> |
d7306fe6 | 23 | #include <setjmp.h> |
4d553a13 | 24 | |
7ab12479 JB |
25 | #include "lisp.h" |
26 | #include "buffer.h" | |
3e4731a3 | 27 | #include "keyboard.h" |
e35f6ff7 | 28 | #include "keymap.h" |
44fa5b1e | 29 | #include "frame.h" |
7ab12479 JB |
30 | #include "window.h" |
31 | #include "commands.h" | |
32 | #include "indent.h" | |
33 | #include "termchar.h" | |
34 | #include "disptab.h" | |
dfcf069d | 35 | #include "dispextern.h" |
5500c422 GM |
36 | #include "blockinput.h" |
37 | #include "intervals.h" | |
de509a60 | 38 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 39 | |
6d55d620 | 40 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 41 | #include "xterm.h" |
5500c422 | 42 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
43 | #ifdef WINDOWSNT |
44 | #include "w32term.h" | |
45 | #endif | |
1e3c8885 EZ |
46 | #ifdef MSDOS |
47 | #include "msdos.h" | |
48 | #endif | |
edfda783 AR |
49 | #ifdef HAVE_NS |
50 | #include "nsterm.h" | |
51 | #endif | |
5500c422 | 52 | |
955cbe7b | 53 | Lisp_Object Qwindowp, Qwindow_live_p; |
b9e809c2 MR |
54 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
55 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; | |
56 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; | |
57 | static Lisp_Object Qresize_root_window, Qresize_root_window_vertically; | |
955cbe7b | 58 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
b9e809c2 MR |
59 | static Lisp_Object Qsafe, Qabove, Qbelow; |
60 | static Lisp_Object Qauto_buffer_name; | |
61 | ||
955cbe7b | 62 | static Lisp_Object Qwindow_size_fixed; |
87478b52 | 63 | |
f57e2426 J |
64 | static int displayed_window_lines (struct window *); |
65 | static struct window *decode_window (Lisp_Object); | |
66 | static int count_windows (struct window *); | |
67 | static int get_leaf_windows (struct window *, struct window **, int); | |
68 | static void window_scroll (Lisp_Object, int, int, int); | |
69 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); | |
70 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
71 | static int window_min_size_1 (struct window *, int, int); | |
72 | static int window_min_size_2 (struct window *, int, int); | |
73 | static int window_min_size (struct window *, int, int, int, int *); | |
74 | static void size_window (Lisp_Object, int, int, int, int, int); | |
75 | static int freeze_window_start (struct window *, void *); | |
76 | static int window_fixed_size_p (struct window *, int, int); | |
77 | static void enlarge_window (Lisp_Object, int, int); | |
78 | static Lisp_Object window_list (void); | |
79 | static int add_window_to_list (struct window *, void *); | |
80 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
81 | Lisp_Object); | |
82 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
83 | Lisp_Object, int); | |
84 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
85 | Lisp_Object *); | |
2f7c71a1 | 86 | static void foreach_window (struct frame *, |
f95464e4 | 87 | int (* fn) (struct window *, void *), |
2f7c71a1 | 88 | void *); |
f57e2426 J |
89 | static int foreach_window_1 (struct window *, |
90 | int (* fn) (struct window *, void *), | |
91 | void *); | |
92 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
1a13852e | 93 | static void resize_window_apply (struct window *, int); |
7c82f3e2 | 94 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 95 | |
7ab12479 JB |
96 | /* This is the window in which the terminal's cursor should |
97 | be left when nothing is being done with it. This must | |
98 | always be a leaf window, and its buffer is selected by | |
99 | the top level editing loop at the end of each command. | |
100 | ||
101 | This value is always the same as | |
44fa5b1e | 102 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
103 | Lisp_Object selected_window; |
104 | ||
67492200 GM |
105 | /* A list of all windows for use by next_window and Fwindow_list. |
106 | Functions creating or deleting windows should invalidate this cache | |
107 | by setting it to nil. */ | |
67492200 GM |
108 | Lisp_Object Vwindow_list; |
109 | ||
5500c422 GM |
110 | /* The mini-buffer window of the selected frame. |
111 | Note that you cannot test for mini-bufferness of an arbitrary window | |
112 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
113 | the selected window. */ |
114 | Lisp_Object minibuf_window; | |
115 | ||
3f49fddc KS |
116 | /* Non-nil means it is the window whose mode line should be |
117 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 118 | Lisp_Object minibuf_selected_window; |
3f49fddc | 119 | |
a58ec57d | 120 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 121 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 122 | |
7ab12479 JB |
123 | /* Incremented for each window created. */ |
124 | static int sequence_number; | |
125 | ||
5b03d3c0 RS |
126 | /* Nonzero after init_window_once has finished. */ |
127 | static int window_initialized; | |
128 | ||
543f5fb1 | 129 | /* Hook to run when window config changes. */ |
eeca6f6f | 130 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 131 | |
f230ecc9 | 132 | /* Incremented by 1 whenever a window is deleted. */ |
2b96acb7 | 133 | static int window_deletion_count; |
0d384044 | 134 | |
66d43aea | 135 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 136 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 137 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 138 | |
c876b227 | 139 | /* Same for window_scroll_line_based. */ |
c876b227 SM |
140 | static int window_scroll_preserve_hpos; |
141 | static int window_scroll_preserve_vpos; | |
f230ecc9 MR |
142 | \f |
143 | static struct window * | |
144 | decode_window (register Lisp_Object window) | |
145 | { | |
146 | if (NILP (window)) | |
147 | return XWINDOW (selected_window); | |
c876b227 | 148 | |
f230ecc9 MR |
149 | CHECK_LIVE_WINDOW (window); |
150 | return XWINDOW (window); | |
151 | } | |
152 | ||
153 | static struct window * | |
154 | decode_any_window (register Lisp_Object window) | |
155 | { | |
156 | if (NILP (window)) | |
157 | return XWINDOW (selected_window); | |
158 | ||
159 | CHECK_WINDOW (window); | |
160 | return XWINDOW (window); | |
161 | } | |
666e158e | 162 | |
7ab12479 | 163 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 164 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 165 | (Lisp_Object object) |
7ab12479 | 166 | { |
413430c5 | 167 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
168 | } |
169 | ||
806b4d9b | 170 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 MR |
171 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
172 | A live window is a window that displays a buffer. */) | |
5842a27b | 173 | (Lisp_Object object) |
605be8af | 174 | { |
9e571f49 | 175 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 176 | } |
727e958e MR |
177 | \f |
178 | /* Frames and windows. */ | |
179 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
180 | doc: /* Return the frame that window WINDOW is on. | |
181 | WINDOW can be any window and defaults to the selected one. */) | |
182 | (Lisp_Object window) | |
183 | { | |
184 | return decode_any_window (window)->frame; | |
185 | } | |
186 | ||
187 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
188 | doc: /* Return the root window of FRAME_OR_WINDOW. | |
189 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
190 | Else if FRAME_OR_WINDOW denotes any window, return the root window of | |
191 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
192 | the root window of that frame. */) | |
193 | (Lisp_Object frame_or_window) | |
194 | { | |
195 | Lisp_Object window; | |
196 | ||
197 | if (NILP (frame_or_window)) | |
198 | window = SELECTED_FRAME ()->root_window; | |
199 | else if (WINDOWP (frame_or_window)) | |
200 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
201 | else | |
202 | { | |
203 | CHECK_LIVE_FRAME (frame_or_window); | |
204 | window = XFRAME (frame_or_window)->root_window; | |
205 | } | |
206 | ||
207 | return window; | |
208 | } | |
209 | ||
210 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
211 | doc: /* Return the window used now for minibuffers. | |
212 | If the optional argument FRAME is specified, return the minibuffer window | |
213 | used by that frame. */) | |
214 | (Lisp_Object frame) | |
215 | { | |
216 | if (NILP (frame)) | |
217 | frame = selected_frame; | |
218 | CHECK_LIVE_FRAME (frame); | |
219 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
220 | } | |
221 | ||
222 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
223 | Swindow_minibuffer_p, 0, 1, 0, | |
224 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
225 | WINDOW can be any window and defaults to the selected one. */) | |
226 | (Lisp_Object window) | |
227 | { | |
228 | return MINI_WINDOW_P (decode_any_window (window)) ? Qt : Qnil; | |
229 | } | |
230 | ||
231 | /* Don't move this to window.el - this must be a safe routine. */ | |
232 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
233 | doc: /* Return the topmost, leftmost live window on FRAME_OR_WINDOW. | |
234 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
235 | Else if FRAME_OR_WINDOW denotes any window, return the first window of | |
236 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
237 | the first window of that frame. */) | |
238 | (Lisp_Object frame_or_window) | |
239 | { | |
240 | Lisp_Object window; | |
241 | ||
242 | if (NILP (frame_or_window)) | |
243 | window = SELECTED_FRAME ()->root_window; | |
244 | else if (WINDOWP (frame_or_window)) | |
245 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
246 | else | |
247 | { | |
248 | CHECK_LIVE_FRAME (frame_or_window); | |
249 | window = XFRAME (frame_or_window)->root_window; | |
250 | } | |
251 | ||
252 | while (NILP (XWINDOW (window)->buffer)) | |
253 | { | |
254 | if (! NILP (XWINDOW (window)->hchild)) | |
255 | window = XWINDOW (window)->hchild; | |
256 | else if (! NILP (XWINDOW (window)->vchild)) | |
257 | window = XWINDOW (window)->vchild; | |
258 | else | |
259 | abort (); | |
260 | } | |
261 | ||
262 | return window; | |
263 | } | |
264 | ||
265 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
266 | Sframe_selected_window, 0, 1, 0, | |
267 | doc: /* Return the selected window of FRAME_OR_WINDOW. | |
268 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
269 | Else if FRAME_OR_WINDOW denotes any window, return the selected window | |
270 | of that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
271 | the selected window of that frame. */) | |
272 | (Lisp_Object frame_or_window) | |
273 | { | |
274 | Lisp_Object window; | |
275 | ||
276 | if (NILP (frame_or_window)) | |
277 | window = SELECTED_FRAME ()->selected_window; | |
278 | else if (WINDOWP (frame_or_window)) | |
279 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; | |
280 | else | |
281 | { | |
282 | CHECK_LIVE_FRAME (frame_or_window); | |
283 | window = XFRAME (frame_or_window)->selected_window; | |
284 | } | |
285 | ||
286 | return window; | |
287 | } | |
288 | ||
289 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
290 | Sset_frame_selected_window, 2, 3, 0, | |
291 | doc: /* Set selected window of FRAME to WINDOW. | |
292 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
293 | is the selected frame, this makes WINDOW the selected window. Optional | |
294 | argument NORECORD non-nil means to neither change the order of recently | |
295 | selected windows nor the buffer list. WINDOW must denote a live window. | |
296 | Return WINDOW. */) | |
297 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
298 | { | |
299 | if (NILP (frame)) | |
300 | frame = selected_frame; | |
301 | ||
302 | CHECK_LIVE_FRAME (frame); | |
303 | CHECK_LIVE_WINDOW (window); | |
304 | ||
305 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
306 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
307 | ||
308 | if (EQ (frame, selected_frame)) | |
309 | return Fselect_window (window, norecord); | |
310 | else | |
311 | return XFRAME (frame)->selected_window = window; | |
312 | } | |
313 | ||
314 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
315 | doc: /* Return the selected window. | |
316 | The selected window is the window in which the standard cursor for | |
317 | selected windows appears and to which many commands apply. */) | |
318 | (void) | |
319 | { | |
320 | return selected_window; | |
321 | } | |
322 | ||
323 | /* If select_window is called with inhibit_point_swap non-zero it will | |
324 | not store point of the old selected window's buffer back into that | |
325 | window's pointm slot. This is needed by Fset_window_configuration to | |
326 | avoid that the display routine is called with selected_window set to | |
327 | Qnil causing a subsequent crash. */ | |
328 | static Lisp_Object | |
329 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
330 | { | |
331 | register struct window *w; | |
332 | register struct window *ow; | |
333 | struct frame *sf; | |
334 | ||
335 | CHECK_LIVE_WINDOW (window); | |
336 | ||
337 | w = XWINDOW (window); | |
338 | w->frozen_window_start_p = 0; | |
339 | ||
340 | if (NILP (norecord)) | |
341 | { | |
342 | ++window_select_count; | |
343 | XSETFASTINT (w->use_time, window_select_count); | |
344 | record_buffer (w->buffer); | |
345 | } | |
346 | ||
347 | if (EQ (window, selected_window) && !inhibit_point_swap) | |
348 | return window; | |
349 | ||
350 | sf = SELECTED_FRAME (); | |
351 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
352 | { | |
353 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
354 | /* Use this rather than Fhandle_switch_frame | |
355 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
356 | move around in the state where a minibuffer in a separate | |
357 | frame is active. */ | |
358 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
359 | /* Fselect_frame called us back so we've done all the work already. */ | |
360 | eassert (EQ (window, selected_window)); | |
361 | return window; | |
362 | } | |
363 | else | |
364 | sf->selected_window = window; | |
365 | ||
366 | /* Store the current buffer's actual point into the | |
367 | old selected window. It belongs to that window, | |
368 | and when the window is not selected, must be in the window. */ | |
369 | if (!inhibit_point_swap) | |
370 | { | |
371 | ow = XWINDOW (selected_window); | |
372 | if (! NILP (ow->buffer)) | |
373 | set_marker_both (ow->pointm, ow->buffer, | |
374 | BUF_PT (XBUFFER (ow->buffer)), | |
375 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
376 | } | |
377 | ||
378 | selected_window = window; | |
379 | ||
380 | Fset_buffer (w->buffer); | |
381 | ||
382 | BVAR (XBUFFER (w->buffer), last_selected_window) = window; | |
383 | ||
384 | /* Go to the point recorded in the window. | |
385 | This is important when the buffer is in more | |
386 | than one window. It also matters when | |
387 | redisplay_window has altered point after scrolling, | |
388 | because it makes the change only in the window. */ | |
389 | { | |
390 | register EMACS_INT new_point = marker_position (w->pointm); | |
391 | if (new_point < BEGV) | |
392 | SET_PT (BEGV); | |
393 | else if (new_point > ZV) | |
394 | SET_PT (ZV); | |
395 | else | |
396 | SET_PT (new_point); | |
397 | } | |
398 | ||
399 | windows_or_buffers_changed++; | |
400 | return window; | |
401 | } | |
402 | ||
403 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
404 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
405 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
406 | window. Return WINDOW. | |
407 | ||
408 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
409 | front of the buffer list and do not make this window the most recently | |
410 | selected one. | |
605be8af | 411 | |
727e958e MR |
412 | Note that the main editor command loop sets the current buffer to the |
413 | buffer of the selected window before each command. */) | |
414 | (register Lisp_Object window, Lisp_Object norecord) | |
415 | { | |
416 | return select_window (window, norecord, 0); | |
417 | } | |
418 | \f | |
496e208e MR |
419 | DEFUN ("window-clone-number", Fwindow_clone_number, Swindow_clone_number, 0, 1, 0, |
420 | doc: /* Return WINDOW's clone number. | |
421 | WINDOW can be any window and defaults to the selected one. */) | |
422 | (Lisp_Object window) | |
423 | { | |
424 | return decode_any_window (window)->clone_number; | |
425 | } | |
426 | ||
bf60a96b MR |
427 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
428 | doc: /* Return the buffer that WINDOW is displaying. | |
429 | WINDOW can be any window and defaults to the selected one. | |
430 | If WINDOW is an internal window return nil. */) | |
431 | (Lisp_Object window) | |
432 | { | |
433 | return decode_any_window (window)->buffer; | |
434 | } | |
435 | ||
436 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
437 | doc: /* Return WINDOW's parent window. | |
438 | WINDOW can be any window and defaults to the selected one. | |
439 | Return nil if WINDOW has no parent. */) | |
440 | (Lisp_Object window) | |
441 | { | |
442 | return decode_any_window (window)->parent; | |
443 | } | |
444 | ||
445 | DEFUN ("window-vchild", Fwindow_vchild, Swindow_vchild, 0, 1, 0, | |
446 | doc: /* Return WINDOW's first vertical child window. | |
447 | WINDOW can be any window and defaults to the selected one. | |
448 | Return nil if WINDOW has no vertical child. */) | |
449 | (Lisp_Object window) | |
450 | { | |
451 | return decode_any_window (window)->vchild; | |
452 | } | |
453 | ||
454 | DEFUN ("window-hchild", Fwindow_hchild, Swindow_hchild, 0, 1, 0, | |
455 | doc: /* Return WINDOW's first horizontal child window. | |
456 | WINDOW can be any window and defaults to the selected one. | |
457 | Return nil if WINDOW has no horizontal child. */) | |
458 | (Lisp_Object window) | |
459 | { | |
460 | return decode_any_window (window)->hchild; | |
461 | } | |
462 | ||
463 | DEFUN ("window-next", Fwindow_next, Swindow_next, 0, 1, 0, | |
464 | doc: /* Return WINDOW's right sibling window. | |
465 | WINDOW can be any window and defaults to the selected one. | |
466 | Return nil if WINDOW has no right sibling. */) | |
467 | (Lisp_Object window) | |
468 | { | |
469 | return decode_any_window (window)->next; | |
470 | } | |
471 | ||
472 | DEFUN ("window-prev", Fwindow_prev, Swindow_prev, 0, 1, 0, | |
473 | doc: /* Return WINDOW's left sibling window. | |
474 | WINDOW can be any window and defaults to the selected one. | |
475 | Return nil if WINDOW has no left sibling. */) | |
476 | (Lisp_Object window) | |
477 | { | |
478 | return decode_any_window (window)->prev; | |
479 | } | |
67492200 | 480 | |
496e208e MR |
481 | DEFUN ("window-splits", Fwindow_splits, Swindow_splits, 0, 1, 0, |
482 | doc: /* Return splits status for WINDOW. | |
483 | WINDOW can be any window and defaults to the selected one. | |
7ab12479 | 484 | |
496e208e MR |
485 | If the value returned by this function is nil and WINDOW is resized, the |
486 | corresponding space is preferably taken from (or given to) WINDOW's | |
487 | right sibling. When WINDOW is deleted, its space is given to its left | |
488 | sibling. | |
0cc1039f | 489 | |
496e208e MR |
490 | If the value returned by this function is non-nil, resizing and deleting |
491 | WINDOW may resize all windows in the same combination. */) | |
492 | (Lisp_Object window) | |
7ab12479 | 493 | { |
496e208e | 494 | return decode_any_window (window)->splits; |
7ab12479 | 495 | } |
53bb6b99 | 496 | |
496e208e MR |
497 | DEFUN ("set-window-splits", Fset_window_splits, Sset_window_splits, 2, 2, 0, |
498 | doc: /* Set splits status of WINDOW to STATUS. | |
499 | WINDOW can be any window and defaults to the selected one. Return | |
500 | STATUS. | |
536833ab | 501 | |
496e208e MR |
502 | If STATUS is nil and WINDOW is later resized, the corresponding space is |
503 | preferably taken from (or given to) WINDOW's right sibling. When WINDOW | |
504 | is deleted, its space is given to its left sibling. | |
536833ab | 505 | |
496e208e MR |
506 | If STATUS is non-nil, resizing and deleting WINDOW may resize all |
507 | windows in the same combination. */) | |
508 | (Lisp_Object window, Lisp_Object status) | |
b3a10345 | 509 | { |
496e208e | 510 | register struct window *w = decode_any_window (window); |
b3a10345 | 511 | |
496e208e | 512 | w->splits = status; |
b3a10345 | 513 | |
496e208e MR |
514 | return w->splits; |
515 | } | |
7bbc67d2 | 516 | |
496e208e MR |
517 | DEFUN ("window-nest", Fwindow_nest, Swindow_nest, 0, 1, 0, |
518 | doc: /* Return nest status of WINDOW. | |
519 | WINDOW can be any window and defaults to the selected one. | |
536833ab | 520 | |
496e208e MR |
521 | If the return value is nil, subwindows of WINDOW can be recombined with |
522 | WINDOW's siblings. A return value of non-nil means that subwindows of | |
523 | WINDOW are never \(re-)combined with WINDOW's siblings. */) | |
524 | (Lisp_Object window) | |
525 | { | |
526 | return decode_any_window (window)->nest; | |
527 | } | |
b3a10345 | 528 | |
496e208e MR |
529 | DEFUN ("set-window-nest", Fset_window_nest, Sset_window_nest, 2, 2, 0, |
530 | doc: /* Set nest status of WINDOW to STATUS. | |
531 | WINDOW can be any window and defaults to the selected one. Return | |
532 | STATUS. | |
536833ab | 533 | |
496e208e MR |
534 | If STATUS is nil, subwindows of WINDOW can be recombined with WINDOW's |
535 | siblings. STATUS non-nil means that subwindows of WINDOW are never | |
536 | \(re-)combined with WINDOW's siblings. */) | |
537 | (Lisp_Object window, Lisp_Object status) | |
538 | { | |
539 | register struct window *w = decode_any_window (window); | |
536833ab | 540 | |
496e208e | 541 | w->nest = status; |
b3a10345 | 542 | |
496e208e MR |
543 | return w->nest; |
544 | } | |
b3a10345 | 545 | |
496e208e MR |
546 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
547 | doc: /* Return WINDOW's use time. | |
548 | WINDOW defaults to the selected window. The window with the highest use | |
549 | time is the most recently selected one. The window with the lowest use | |
550 | time is the least recently selected one. */) | |
551 | (Lisp_Object window) | |
552 | { | |
553 | return decode_window (window)->use_time; | |
b3a10345 | 554 | } |
abde8f8c MR |
555 | \f |
556 | DEFUN ("window-total-size", Fwindow_total_size, Swindow_total_size, 0, 2, 0, | |
557 | doc: /* Return the total number of lines of WINDOW. | |
558 | WINDOW can be any window and defaults to the selected one. The return | |
559 | value includes WINDOW's mode line and header line, if any. If WINDOW | |
560 | is internal, the return value is the sum of the total number of lines | |
561 | of WINDOW's child windows if these are vertically combined and the | |
562 | height of WINDOW's first child otherwise. | |
563 | ||
564 | Optional argument HORIZONTAL non-nil means return the total number of | |
565 | columns of WINDOW. In this case the return value includes any vertical | |
566 | dividers or scrollbars of WINDOW. If WINDOW is internal, the return | |
567 | value is the sum of the total number of columns of WINDOW's child | |
568 | windows if they are horizontally combined and the width of WINDOW's | |
569 | first child otherwise. */) | |
570 | (Lisp_Object window, Lisp_Object horizontal) | |
571 | { | |
572 | if (NILP (horizontal)) | |
573 | return decode_any_window (window)->total_lines; | |
574 | else | |
575 | return decode_any_window (window)->total_cols; | |
576 | } | |
b3a10345 | 577 | |
496e208e MR |
578 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
579 | doc: /* Return new total size of WINDOW. | |
580 | WINDOW defaults to the selected window. */) | |
581 | (Lisp_Object window) | |
582 | { | |
583 | return decode_any_window (window)->new_total; | |
584 | } | |
585 | ||
586 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
587 | doc: /* Return normal height of WINDOW. | |
588 | WINDOW can be any window and defaults to the selected one. Optional | |
589 | argument HORIZONTAL non-nil means return normal width of WINDOW. */) | |
590 | (Lisp_Object window, Lisp_Object horizontal) | |
591 | { | |
592 | if (NILP (horizontal)) | |
593 | return decode_any_window (window)->normal_lines; | |
594 | else | |
595 | return decode_any_window (window)->normal_cols; | |
596 | } | |
597 | ||
598 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
599 | doc: /* Return new normal size of WINDOW. | |
600 | WINDOW can be any window and defaults to the selected one. */) | |
601 | (Lisp_Object window) | |
602 | { | |
603 | return decode_any_window (window)->new_normal; | |
604 | } | |
605 | ||
abde8f8c MR |
606 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
607 | doc: /* Return left column of WINDOW. | |
608 | WINDOW can be any window and defaults to the selected one. */) | |
609 | (Lisp_Object window) | |
610 | { | |
611 | return decode_any_window (window)->left_col; | |
612 | } | |
613 | ||
614 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
615 | doc: /* Return top line of WINDOW. | |
616 | WINDOW can be any window and defaults to the selected one. */) | |
617 | (Lisp_Object window) | |
618 | { | |
619 | return decode_any_window (window)->top_line; | |
620 | } | |
621 | ||
622 | /* Return the number of lines of W's body. Don't count any mode or | |
623 | header line of W. */ | |
624 | ||
625 | int | |
626 | window_body_lines (struct window *w) | |
627 | { | |
628 | int height = XFASTINT (w->total_lines); | |
629 | ||
630 | if (!MINI_WINDOW_P (w)) | |
631 | { | |
632 | if (WINDOW_WANTS_MODELINE_P (w)) | |
633 | --height; | |
634 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
635 | --height; | |
636 | } | |
637 | ||
638 | return height; | |
639 | } | |
640 | ||
641 | /* Return the number of columns of W's body. Don't count columns | |
642 | occupied by the scroll bar or the vertical bar separating W from its | |
643 | right sibling. On window-systems don't count fringes or display | |
644 | margins either. */ | |
645 | ||
646 | int | |
647 | window_body_cols (struct window *w) | |
648 | { | |
649 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
650 | int width = XINT (w->total_cols); | |
651 | ||
652 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
653 | /* Scroll bars occupy a few columns. */ | |
654 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
655 | else if (!FRAME_WINDOW_P (f) | |
656 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
657 | /* The column of `|' characters separating side-by-side windows | |
658 | occupies one column only. */ | |
659 | width -= 1; | |
660 | ||
661 | if (FRAME_WINDOW_P (f)) | |
662 | /* On window-systems, fringes and display margins cannot be | |
663 | used for normal text. */ | |
664 | width -= (WINDOW_FRINGE_COLS (w) | |
665 | + WINDOW_LEFT_MARGIN_COLS (w) | |
666 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
667 | ||
668 | return width; | |
669 | } | |
670 | ||
671 | DEFUN ("window-body-size", Fwindow_body_size, Swindow_body_size, 0, 2, 0, | |
672 | doc: /* Return the number of lines of WINDOW's body. | |
673 | WINDOW must be a live window and defaults to the selected one. The | |
674 | return value does not include WINDOW's mode line and header line, if | |
675 | any. | |
676 | ||
677 | Optional argument HORIZONTAL non-nil means return the number of columns | |
678 | of WINDOW's body. In this case, the return value does not include any | |
679 | vertical dividers or scroll bars owned by WINDOW. On a window-system | |
680 | the return value does not include the number of columns used for | |
681 | WINDOW's fringes or display margins either. */) | |
682 | (Lisp_Object window, Lisp_Object horizontal) | |
683 | { | |
684 | struct window *w = decode_any_window (window); | |
685 | ||
686 | if (NILP (horizontal)) | |
687 | return make_number (window_body_lines (w)); | |
688 | else | |
689 | return make_number (window_body_cols (w)); | |
690 | } | |
536833ab | 691 | |
7ab12479 | 692 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 693 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 694 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 695 | (Lisp_Object window) |
7ab12479 JB |
696 | { |
697 | return decode_window (window)->hscroll; | |
698 | } | |
699 | ||
700 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 701 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 702 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
703 | |
704 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 705 | window so that the location of point moves off-window. */) |
5842a27b | 706 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 707 | { |
ea68264b GM |
708 | struct window *w = decode_window (window); |
709 | int hscroll; | |
7ab12479 | 710 | |
b7826503 | 711 | CHECK_NUMBER (ncol); |
ea68264b | 712 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 713 | |
ea68264b GM |
714 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
715 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 716 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 717 | |
c67fa410 | 718 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
719 | return ncol; |
720 | } | |
721 | ||
190eb263 RS |
722 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
723 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 724 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 725 | WINDOW defaults to the selected window. |
fdb82f93 | 726 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 727 | (Lisp_Object window) |
190eb263 RS |
728 | { |
729 | return decode_window (window)->redisplay_end_trigger; | |
730 | } | |
731 | ||
732 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
733 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
734 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
735 | VALUE should be a buffer position (typically a marker) or nil. | |
736 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
737 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
738 | with two arguments: WINDOW, and the end trigger value. | |
739 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 740 | (register Lisp_Object window, Lisp_Object value) |
190eb263 RS |
741 | { |
742 | register struct window *w; | |
743 | ||
744 | w = decode_window (window); | |
745 | w->redisplay_end_trigger = value; | |
746 | return value; | |
747 | } | |
748 | ||
7ab12479 | 749 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 750 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
751 | The list has the form (LEFT TOP RIGHT BOTTOM). |
752 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
753 | all relative to 0, 0 at top left corner of frame. | |
754 | ||
755 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
756 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
757 | The edges include the space used by WINDOW's scroll bar, display | |
758 | margins, fringes, header line, and/or mode line. For the edges of | |
759 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 760 | (Lisp_Object window) |
7ab12479 | 761 | { |
6b61353c | 762 | register struct window *w = decode_any_window (window); |
7ab12479 | 763 | |
949cf20f KS |
764 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
765 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
766 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
767 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
768 | Qnil)))); | |
7ab12479 JB |
769 | } |
770 | ||
c99a9eb3 RS |
771 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
772 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
773 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
774 | the top left corner of the frame. | |
775 | ||
776 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
777 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
778 | The pixel edges include the space used by WINDOW's scroll bar, display | |
779 | margins, fringes, header line, and/or mode line. For the pixel edges | |
780 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 781 | (Lisp_Object window) |
c99a9eb3 | 782 | { |
6b61353c | 783 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
784 | |
785 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
786 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
787 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
788 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
789 | Qnil)))); | |
790 | } | |
791 | ||
9d5405ec J |
792 | static void |
793 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) | |
794 | { | |
795 | struct frame *f = XFRAME (w->frame); | |
796 | *add_y = f->top_pos; | |
797 | #ifdef FRAME_MENUBAR_HEIGHT | |
798 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
799 | #endif | |
bfeabdc3 JD |
800 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
801 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
802 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
803 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
804 | #endif | |
805 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
806 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
807 | #endif | |
808 | *add_x = f->left_pos; | |
bfeabdc3 JD |
809 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
810 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
811 | #endif | |
9d5405ec J |
812 | } |
813 | ||
814 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
815 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
816 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
817 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
818 | the top left corner of the display. | |
819 | ||
820 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
821 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
822 | The pixel edges include the space used by WINDOW's scroll bar, display | |
823 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 824 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 825 | (Lisp_Object window) |
9d5405ec J |
826 | { |
827 | register struct window *w = decode_any_window (window); | |
828 | int add_x, add_y; | |
ed3751c8 | 829 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
830 | |
831 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
832 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
833 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
834 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
835 | Qnil)))); | |
836 | } | |
837 | ||
c99a9eb3 RS |
838 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
839 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
840 | The list has the form (LEFT TOP RIGHT BOTTOM). |
841 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
842 | all relative to 0, 0 at top left corner of frame. | |
843 | ||
844 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
845 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
846 | The inside edges do not include the space used by the WINDOW's scroll | |
847 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 848 | (Lisp_Object window) |
c99a9eb3 | 849 | { |
6b61353c | 850 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
851 | |
852 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
853 | + WINDOW_LEFT_MARGIN_COLS (w) | |
854 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
855 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
856 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 857 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
858 | - WINDOW_RIGHT_MARGIN_COLS (w) |
859 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
860 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
861 | - WINDOW_MODE_LINE_LINES (w))); | |
862 | } | |
863 | ||
864 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 865 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
866 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
867 | the top left corner of the frame. | |
868 | ||
869 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
870 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
871 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 872 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 873 | (Lisp_Object window) |
c99a9eb3 | 874 | { |
6b61353c | 875 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
876 | |
877 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
878 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
879 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
880 | make_number (WINDOW_TOP_EDGE_Y (w) | |
881 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 882 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
883 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
884 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
885 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
886 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
887 | } | |
888 | ||
9d5405ec J |
889 | DEFUN ("window-inside-absolute-pixel-edges", |
890 | Fwindow_inside_absolute_pixel_edges, | |
891 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
892 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
893 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
894 | the top left corner of the display. | |
895 | ||
896 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
897 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
898 | The inside edges do not include the space used by WINDOW's scroll bar, | |
899 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 900 | (Lisp_Object window) |
9d5405ec J |
901 | { |
902 | register struct window *w = decode_any_window (window); | |
903 | int add_x, add_y; | |
ed3751c8 | 904 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
905 | |
906 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
907 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
908 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
909 | make_number (WINDOW_TOP_EDGE_Y (w) | |
910 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
911 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
912 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
913 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
914 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
915 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
916 | } | |
917 | ||
9173a8fb | 918 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 919 | If it is not, return ON_NOTHING; |
9173a8fb | 920 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 921 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 922 | if it is on the border between the window and its right sibling, |
341f3858 | 923 | return ON_VERTICAL_BORDER. |
9173a8fb | 924 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 925 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 926 | if it is in left or right fringe of the window, |
9173a8fb | 927 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 928 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 929 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
930 | |
931 | X and Y are frame relative pixel coordinates. */ | |
932 | ||
7442878f | 933 | static enum window_part |
9173a8fb | 934 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 935 | { |
b0228ace | 936 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
9173a8fb | 937 | int left_x, right_x; |
7442878f | 938 | enum window_part part; |
949cf20f KS |
939 | int ux = FRAME_COLUMN_WIDTH (f); |
940 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
941 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
942 | /* The width of the area where the vertical line can be dragged. |
943 | (Between mode lines for instance. */ | |
944 | int grabbable_width = ux; | |
949cf20f | 945 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb CY |
946 | int top_y = WINDOW_TOP_EDGE_Y (w); |
947 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
948 | ||
949 | /* Outside any interesting row? */ | |
950 | if (y < top_y || y >= bottom_y) | |
951 | return ON_NOTHING; | |
b0228ace | 952 | |
466539bc EZ |
953 | /* In what's below, we subtract 1 when computing right_x because we |
954 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
955 | if (w->pseudo_window_p) |
956 | { | |
957 | left_x = 0; | |
949cf20f | 958 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
959 | } |
960 | else | |
961 | { | |
949cf20f KS |
962 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
963 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 964 | } |
37962e60 | 965 | |
1cb794ba GM |
966 | /* On the mode line or header line? If it's near the start of |
967 | the mode or header line of window that's has a horizontal | |
968 | sibling, say it's on the vertical line. That's to be able | |
969 | to resize windows horizontally in case we're using toolkit | |
970 | scroll bars. */ | |
b0228ace | 971 | |
1cb794ba | 972 | if (WINDOW_WANTS_MODELINE_P (w) |
9173a8fb | 973 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 974 | { |
949cf20f KS |
975 | part = ON_MODE_LINE; |
976 | ||
977 | header_vertical_border_check: | |
b0228ace GM |
978 | /* We're somewhere on the mode line. We consider the place |
979 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 980 | as the vertical border. If scroll bars on the left, |
b0228ace | 981 | return the right window. */ |
9173a8fb CY |
982 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
983 | || WINDOW_RIGHTMOST_P (w)) | |
984 | && !WINDOW_LEFTMOST_P (w) | |
985 | && eabs (x - x0) < grabbable_width) | |
986 | return ON_VERTICAL_BORDER; | |
987 | ||
988 | /* Make sure we're not at the rightmost position of a | |
989 | mode-/header-line and there's yet another window on the | |
990 | right. (Bug#1372) */ | |
991 | else if ((WINDOW_RIGHTMOST_P (w) || x < x1) | |
992 | && eabs (x - x1) < grabbable_width) | |
993 | return ON_VERTICAL_BORDER; | |
994 | ||
995 | if (x < x0 || x >= x1) | |
cb639b8f KS |
996 | return ON_NOTHING; |
997 | ||
949cf20f | 998 | return part; |
b0228ace | 999 | } |
949cf20f KS |
1000 | |
1001 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
9173a8fb | 1002 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 1003 | { |
949cf20f KS |
1004 | part = ON_HEADER_LINE; |
1005 | goto header_vertical_border_check; | |
1cb794ba | 1006 | } |
949cf20f | 1007 | |
9173a8fb | 1008 | if (x < x0 || x >= x1) return ON_NOTHING; |
cb639b8f | 1009 | |
949cf20f | 1010 | /* Outside any interesting column? */ |
9173a8fb CY |
1011 | if (x < left_x || x > right_x) |
1012 | return ON_SCROLL_BAR; | |
949cf20f KS |
1013 | |
1014 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1015 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1016 | |
949cf20f KS |
1017 | text_left = window_box_left (w, TEXT_AREA); |
1018 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1019 | ||
1020 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1021 | { |
447e9da0 | 1022 | if (!w->pseudo_window_p |
949cf20f | 1023 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1024 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1025 | && (eabs (x - right_x) < grabbable_width)) |
1026 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1027 | } |
9173a8fb CY |
1028 | /* Need to say "x > right_x" rather than >=, since on character |
1029 | terminals, the vertical line's x coordinate is right_x. */ | |
1030 | else if (!w->pseudo_window_p | |
1031 | && !WINDOW_RIGHTMOST_P (w) | |
1032 | && x > right_x - ux) | |
1033 | return ON_VERTICAL_BORDER; | |
1034 | ||
1035 | if (x < text_left) | |
949cf20f KS |
1036 | { |
1037 | if (lmargin_width > 0 | |
1038 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1039 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1040 | : (x < left_x + lmargin_width))) | |
1041 | return ON_LEFT_MARGIN; | |
1042 | ||
949cf20f KS |
1043 | return ON_LEFT_FRINGE; |
1044 | } | |
1045 | ||
9173a8fb | 1046 | if (x >= text_right) |
949cf20f KS |
1047 | { |
1048 | if (rmargin_width > 0 | |
1049 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1050 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1051 | : (x >= right_x - rmargin_width))) | |
1052 | return ON_RIGHT_MARGIN; | |
1053 | ||
949cf20f KS |
1054 | return ON_RIGHT_FRINGE; |
1055 | } | |
1056 | ||
1057 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1058 | return ON_TEXT; |
d5783c40 JB |
1059 | } |
1060 | ||
9173a8fb CY |
1061 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1062 | x-coordinate relative to part PART of window W. */ | |
1063 | int | |
1064 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1065 | { | |
1066 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1067 | ||
1068 | switch (part) | |
1069 | { | |
1070 | case ON_TEXT: | |
1071 | return x - window_box_left (w, TEXT_AREA); | |
1072 | ||
1073 | case ON_LEFT_FRINGE: | |
1074 | return x - left_x; | |
1075 | ||
1076 | case ON_RIGHT_FRINGE: | |
1077 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1078 | ||
1079 | case ON_LEFT_MARGIN: | |
1080 | return (x - left_x | |
1081 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1082 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1083 | ||
1084 | case ON_RIGHT_MARGIN: | |
1085 | return (x + 1 | |
1086 | - ((w->pseudo_window_p) | |
1087 | ? WINDOW_TOTAL_WIDTH (w) | |
1088 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1089 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1090 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1091 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1092 | } | |
1093 | ||
1094 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1095 | return 0; | |
1096 | } | |
1097 | ||
b0228ace | 1098 | |
d5783c40 | 1099 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1100 | Scoordinates_in_window_p, 2, 2, 0, |
1101 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
1102 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
1103 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1104 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1105 | frame. |
1106 | If COORDINATES are in the text portion of WINDOW, | |
1107 | the coordinates relative to the window are returned. | |
1108 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1109 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1110 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1111 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1112 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1113 | `vertical-line' is returned. |
1114 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1115 | or `right-margin' is returned. */) | |
5842a27b | 1116 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1117 | { |
5500c422 GM |
1118 | struct window *w; |
1119 | struct frame *f; | |
d5783c40 | 1120 | int x, y; |
5500c422 | 1121 | Lisp_Object lx, ly; |
d5783c40 | 1122 | |
6b61353c | 1123 | CHECK_WINDOW (window); |
5500c422 GM |
1124 | w = XWINDOW (window); |
1125 | f = XFRAME (w->frame); | |
b7826503 | 1126 | CHECK_CONS (coordinates); |
5500c422 GM |
1127 | lx = Fcar (coordinates); |
1128 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1129 | CHECK_NUMBER_OR_FLOAT (lx); |
1130 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1131 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1132 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1133 | |
9173a8fb | 1134 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1135 | { |
7442878f | 1136 | case ON_NOTHING: |
d5783c40 JB |
1137 | return Qnil; |
1138 | ||
7442878f | 1139 | case ON_TEXT: |
9173a8fb CY |
1140 | /* Convert X and Y to window relative pixel coordinates, and |
1141 | return the canonical char units. */ | |
1142 | x -= window_box_left (w, TEXT_AREA); | |
1143 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1144 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1145 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1146 | |
7442878f | 1147 | case ON_MODE_LINE: |
d5783c40 | 1148 | return Qmode_line; |
37962e60 | 1149 | |
7442878f | 1150 | case ON_VERTICAL_BORDER: |
e5d77022 | 1151 | return Qvertical_line; |
d5783c40 | 1152 | |
7442878f | 1153 | case ON_HEADER_LINE: |
045dee35 | 1154 | return Qheader_line; |
5500c422 | 1155 | |
7442878f GM |
1156 | case ON_LEFT_FRINGE: |
1157 | return Qleft_fringe; | |
177c0ea7 | 1158 | |
7442878f GM |
1159 | case ON_RIGHT_FRINGE: |
1160 | return Qright_fringe; | |
fbad6f9a | 1161 | |
49b996e7 GM |
1162 | case ON_LEFT_MARGIN: |
1163 | return Qleft_margin; | |
177c0ea7 | 1164 | |
49b996e7 GM |
1165 | case ON_RIGHT_MARGIN: |
1166 | return Qright_margin; | |
1167 | ||
6487f669 RS |
1168 | case ON_SCROLL_BAR: |
1169 | /* Historically we are supposed to return nil in this case. */ | |
1170 | return Qnil; | |
1171 | ||
d5783c40 JB |
1172 | default: |
1173 | abort (); | |
1174 | } | |
1175 | } | |
1176 | ||
67492200 GM |
1177 | |
1178 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1179 | Check if window W contains coordinates specified by USER_DATA which |
1180 | is actually a pointer to a struct check_window_data CW. | |
1181 | ||
1182 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1183 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1184 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1185 | zero from this function to stop iterating over windows. */ |
1186 | ||
1187 | struct check_window_data | |
1188 | { | |
1189 | Lisp_Object *window; | |
9173a8fb | 1190 | int x, y; |
341f3858 | 1191 | enum window_part *part; |
f95464e4 | 1192 | }; |
67492200 GM |
1193 | |
1194 | static int | |
971de7fb | 1195 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1196 | { |
f95464e4 | 1197 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1198 | enum window_part found; |
1199 | int continue_p = 1; | |
67492200 | 1200 | |
f95464e4 | 1201 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1202 | if (found != ON_NOTHING) |
67492200 | 1203 | { |
341f3858 | 1204 | *cw->part = found; |
f95464e4 | 1205 | XSETWINDOW (*cw->window, w); |
7442878f | 1206 | continue_p = 0; |
67492200 | 1207 | } |
177c0ea7 | 1208 | |
7442878f | 1209 | return continue_p; |
67492200 GM |
1210 | } |
1211 | ||
1212 | ||
5500c422 | 1213 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1214 | return it as a Lisp_Object. |
1215 | ||
1216 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1217 | set *PART to the id of that element. |
949cf20f | 1218 | |
341f3858 | 1219 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1220 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1221 | ||
1222 | This function was previously implemented with a loop cycling over | |
1223 | windows with Fnext_window, and starting with the frame's selected | |
1224 | window. It turned out that this doesn't work with an | |
1225 | implementation of next_window using Vwindow_list, because | |
1226 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1227 | tree of F when this function is called asynchronously from | |
1228 | note_mouse_highlight. The original loop didn't terminate in this | |
1229 | case. */ | |
5500c422 | 1230 | |
7ab12479 | 1231 | Lisp_Object |
9173a8fb CY |
1232 | window_from_coordinates (struct frame *f, int x, int y, |
1233 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1234 | { |
67492200 | 1235 | Lisp_Object window; |
f95464e4 | 1236 | struct check_window_data cw; |
341f3858 KS |
1237 | enum window_part dummy; |
1238 | ||
1239 | if (part == 0) | |
1240 | part = &dummy; | |
5500c422 | 1241 | |
67492200 | 1242 | window = Qnil; |
9173a8fb | 1243 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1244 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1245 | |
67492200 GM |
1246 | /* If not found above, see if it's in the tool bar window, if a tool |
1247 | bar exists. */ | |
1248 | if (NILP (window) | |
1249 | && tool_bar_p | |
1250 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1251 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
9173a8fb | 1252 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
7442878f | 1253 | != ON_NOTHING)) |
5500c422 | 1254 | { |
341f3858 | 1255 | *part = ON_TEXT; |
67492200 | 1256 | window = f->tool_bar_window; |
5500c422 | 1257 | } |
37962e60 | 1258 | |
67492200 | 1259 | return window; |
7ab12479 JB |
1260 | } |
1261 | ||
ab17c3f2 | 1262 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1263 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1264 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1265 | The top left corner of the frame is considered to be row 0, |
1266 | column 0. */) | |
5842a27b | 1267 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1268 | { |
5500c422 | 1269 | struct frame *f; |
7ab12479 | 1270 | |
44fa5b1e | 1271 | if (NILP (frame)) |
1ae1a37d | 1272 | frame = selected_frame; |
b7826503 | 1273 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1274 | f = XFRAME (frame); |
7ab12479 | 1275 | |
5500c422 | 1276 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1277 | CHECK_NUMBER_OR_FLOAT (x); |
1278 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1279 | |
177c0ea7 | 1280 | return window_from_coordinates (f, |
2c77cf3b RS |
1281 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1282 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1283 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1284 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1285 | 0, 0); |
7ab12479 JB |
1286 | } |
1287 | ||
1288 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1289 | doc: /* Return current value of point in WINDOW. |
496e208e | 1290 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1291 | |
fdb82f93 PJ |
1292 | For a nonselected window, this is the value point would have |
1293 | if that window were selected. | |
1294 | ||
1295 | Note that, when WINDOW is the selected window and its buffer | |
1296 | is also currently selected, the value returned is the same as (point). | |
1297 | It would be more strictly correct to return the `top-level' value | |
1298 | of point, outside of any save-excursion forms. | |
1299 | But that is hard to define. */) | |
5842a27b | 1300 | (Lisp_Object window) |
7ab12479 JB |
1301 | { |
1302 | register struct window *w = decode_window (window); | |
1303 | ||
1304 | if (w == XWINDOW (selected_window) | |
1305 | && current_buffer == XBUFFER (w->buffer)) | |
1306 | return Fpoint (); | |
1307 | return Fmarker_position (w->pointm); | |
1308 | } | |
1309 | ||
1310 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1311 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1312 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1313 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1314 | (Lisp_Object window) |
7ab12479 JB |
1315 | { |
1316 | return Fmarker_position (decode_window (window)->start); | |
1317 | } | |
1318 | ||
8646118f RS |
1319 | /* This is text temporarily removed from the doc string below. |
1320 | ||
fdb82f93 PJ |
1321 | This function returns nil if the position is not currently known. |
1322 | That happens when redisplay is preempted and doesn't finish. | |
1323 | If in that case you want to compute where the end of the window would | |
1324 | have been if redisplay had finished, do this: | |
1325 | (save-excursion | |
1326 | (goto-char (window-start window)) | |
1327 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1328 | (point))") */ |
1329 | ||
478292ed | 1330 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1331 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1332 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1333 | This is updated by redisplay, when it runs to completion. |
1334 | Simply changing the buffer text or setting `window-start' | |
1335 | does not update this value. | |
a0a37a6f LT |
1336 | Return nil if there is no recorded value. \(This can happen if the |
1337 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1338 | If UPDATE is non-nil, compute the up-to-date position |
1339 | if it isn't already recorded. */) | |
5842a27b | 1340 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1341 | { |
1342 | Lisp_Object value; | |
1343 | struct window *w = decode_window (window); | |
5a41ab94 | 1344 | Lisp_Object buf; |
31790df3 | 1345 | struct buffer *b; |
5a41ab94 RS |
1346 | |
1347 | buf = w->buffer; | |
b7826503 | 1348 | CHECK_BUFFER (buf); |
b3a10345 | 1349 | b = XBUFFER (buf); |
5a41ab94 | 1350 | |
8646118f | 1351 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1352 | /* If we don't know the end position, return nil. |
1353 | The user can compute it with vertical-motion if he wants to. | |
1354 | It would be nicer to do it automatically, | |
1355 | but that's so slow that it would probably bother people. */ | |
1356 | if (NILP (w->window_end_valid)) | |
1357 | return Qnil; | |
8646118f | 1358 | #endif |
7250968e | 1359 | |
478292ed RS |
1360 | if (! NILP (update) |
1361 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1362 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1363 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1364 | && !noninteractive) |
478292ed | 1365 | { |
cbc099e5 GM |
1366 | struct text_pos startp; |
1367 | struct it it; | |
b3a10345 KS |
1368 | struct buffer *old_buffer = NULL; |
1369 | ||
1370 | /* Cannot use Fvertical_motion because that function doesn't | |
1371 | cope with variable-height lines. */ | |
1372 | if (b != current_buffer) | |
1373 | { | |
1374 | old_buffer = current_buffer; | |
1375 | set_buffer_internal (b); | |
1376 | } | |
2d6d9df0 GM |
1377 | |
1378 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1379 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1380 | `-l' containing a call to `rmail' with subsequent other |
1381 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1382 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1383 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1384 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1385 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1386 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1387 | else |
cbc099e5 GM |
1388 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1389 | ||
cbc099e5 GM |
1390 | start_display (&it, w, startp); |
1391 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1392 | if (it.current_y < it.last_visible_y) |
1393 | move_it_past_eol (&it); | |
cbc099e5 | 1394 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1395 | |
99593a9d GM |
1396 | if (old_buffer) |
1397 | set_buffer_internal (old_buffer); | |
478292ed RS |
1398 | } |
1399 | else | |
b3a10345 | 1400 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1401 | |
1402 | return value; | |
1403 | } | |
1404 | ||
a7ca3326 | 1405 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f LT |
1406 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1407 | Return POS. */) | |
5842a27b | 1408 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1409 | { |
1410 | register struct window *w = decode_window (window); | |
1411 | ||
b7826503 | 1412 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1413 | if (w == XWINDOW (selected_window) |
1414 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1415 | Fgoto_char (pos); |
1416 | else | |
1417 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1418 | |
0685cb3c GM |
1419 | /* We have to make sure that redisplay updates the window to show |
1420 | the new value of point. */ | |
1421 | if (!EQ (window, selected_window)) | |
799417bd | 1422 | ++windows_or_buffers_changed; |
177c0ea7 | 1423 | |
7ab12479 JB |
1424 | return pos; |
1425 | } | |
1426 | ||
1427 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1428 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1429 | WINDOW defaults to the selected window. Return POS. |
1430 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1431 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1432 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1433 | { |
1434 | register struct window *w = decode_window (window); | |
1435 | ||
b7826503 | 1436 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1437 | set_marker_restricted (w->start, pos, w->buffer); |
1438 | /* this is not right, but much easier than doing what is right. */ | |
1439 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1440 | if (NILP (noforce)) |
7ab12479 JB |
1441 | w->force_start = Qt; |
1442 | w->update_mode_line = Qt; | |
d834a2e9 | 1443 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1444 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1445 | if (!EQ (window, selected_window)) |
1446 | windows_or_buffers_changed++; | |
ce7fae7d | 1447 | |
7ab12479 JB |
1448 | return pos; |
1449 | } | |
1450 | ||
496e208e MR |
1451 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1452 | Spos_visible_in_window_p, 0, 3, 0, | |
1453 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
1454 | Return nil if that position is scrolled vertically out of view. | |
1455 | If a character is only partially visible, nil is returned, unless the | |
1456 | optional argument PARTIALLY is non-nil. | |
1457 | If POS is only out of view because of horizontal scrolling, return non-nil. | |
1458 | If POS is t, it specifies the position of the last visible glyph in WINDOW. | |
1459 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. | |
1460 | ||
1461 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1462 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1463 | where X and Y are the pixel coordinates relative to the top left corner | |
1464 | of the window. The remaining elements are omitted if the character after | |
1465 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1466 | off-window at the top and bottom of the row, ROWH is the height of the | |
1467 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1468 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1469 | { | |
1470 | register struct window *w; | |
1471 | register EMACS_INT posint; | |
1472 | register struct buffer *buf; | |
1473 | struct text_pos top; | |
1474 | Lisp_Object in_window = Qnil; | |
1475 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1476 | int x, y; | |
1477 | ||
1478 | w = decode_window (window); | |
1479 | buf = XBUFFER (w->buffer); | |
1480 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
1481 | ||
1482 | if (EQ (pos, Qt)) | |
1483 | posint = -1; | |
1484 | else if (!NILP (pos)) | |
1485 | { | |
1486 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1487 | posint = XINT (pos); | |
1488 | } | |
1489 | else if (w == XWINDOW (selected_window)) | |
1490 | posint = PT; | |
1491 | else | |
1492 | posint = XMARKER (w->pointm)->charpos; | |
1493 | ||
1494 | /* If position is above window start or outside buffer boundaries, | |
1495 | or if window start is out of range, position is not visible. */ | |
1496 | if ((EQ (pos, Qt) | |
1497 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1498 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1499 | && CHARPOS (top) <= BUF_ZV (buf) | |
1500 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1501 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1502 | in_window = Qt; | |
1503 | ||
1504 | if (!NILP (in_window) && !NILP (partially)) | |
1505 | { | |
1506 | Lisp_Object part = Qnil; | |
1507 | if (!fully_p) | |
1508 | part = list4 (make_number (rtop), make_number (rbot), | |
1509 | make_number (rowh), make_number (vpos)); | |
1510 | in_window = Fcons (make_number (x), | |
1511 | Fcons (make_number (y), part)); | |
1512 | } | |
1513 | ||
1514 | return in_window; | |
1515 | } | |
1516 | ||
1517 | DEFUN ("window-line-height", Fwindow_line_height, | |
1518 | Swindow_line_height, 0, 2, 0, | |
1519 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
1520 | WINDOW defaults to the selected window. | |
1521 | ||
1522 | Return height of current line if LINE is omitted or nil. Return height of | |
1523 | header or mode line if LINE is `header-line' or `mode-line'. | |
1524 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1525 | counts from the end of the window. | |
1526 | ||
1527 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1528 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1529 | vertical position in lines and pixels of the line, relative to the top | |
1530 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1531 | the bottom of the text line. If there are off-window pixels at the top | |
1532 | of the (first) text line, YPOS is negative. | |
1533 | ||
1534 | Return nil if window display is not up-to-date. In that case, use | |
1535 | `pos-visible-in-window-p' to obtain the information. */) | |
1536 | (Lisp_Object line, Lisp_Object window) | |
1537 | { | |
1538 | register struct window *w; | |
1539 | register struct buffer *b; | |
1540 | struct glyph_row *row, *end_row; | |
1541 | int max_y, crop, i, n; | |
1542 | ||
1543 | w = decode_window (window); | |
1544 | ||
1545 | if (noninteractive || w->pseudo_window_p) | |
1546 | return Qnil; | |
1547 | ||
1548 | CHECK_BUFFER (w->buffer); | |
1549 | b = XBUFFER (w->buffer); | |
1550 | ||
1551 | /* Fail if current matrix is not up-to-date. */ | |
1552 | if (NILP (w->window_end_valid) | |
1553 | || current_buffer->clip_changed | |
1554 | || current_buffer->prevent_redisplay_optimizations_p | |
1555 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
1556 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
1557 | return Qnil; | |
1558 | ||
1559 | if (NILP (line)) | |
1560 | { | |
1561 | i = w->cursor.vpos; | |
1562 | if (i < 0 || i >= w->current_matrix->nrows | |
1563 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1564 | return Qnil; | |
1565 | max_y = window_text_bottom_y (w); | |
1566 | goto found_row; | |
1567 | } | |
1568 | ||
1569 | if (EQ (line, Qheader_line)) | |
1570 | { | |
1571 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1572 | return Qnil; | |
1573 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1574 | if (!row->enabled_p) | |
1575 | return Qnil; | |
1576 | return list4 (make_number (row->height), | |
1577 | make_number (0), make_number (0), | |
1578 | make_number (0)); | |
1579 | } | |
1580 | ||
1581 | if (EQ (line, Qmode_line)) | |
1582 | { | |
1583 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1584 | if (!row->enabled_p) | |
1585 | return Qnil; | |
1586 | return list4 (make_number (row->height), | |
1587 | make_number (0), /* not accurate */ | |
1588 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
1589 | + window_text_bottom_y (w)), | |
1590 | make_number (0)); | |
1591 | } | |
1592 | ||
1593 | CHECK_NUMBER (line); | |
1594 | n = XINT (line); | |
1595 | ||
1596 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1597 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1598 | max_y = window_text_bottom_y (w); | |
1599 | i = 0; | |
1600 | ||
1601 | while ((n < 0 || i < n) | |
1602 | && row <= end_row && row->enabled_p | |
1603 | && row->y + row->height < max_y) | |
1604 | row++, i++; | |
1605 | ||
1606 | if (row > end_row || !row->enabled_p) | |
1607 | return Qnil; | |
1608 | ||
1609 | if (++n < 0) | |
1610 | { | |
1611 | if (-n > i) | |
1612 | return Qnil; | |
1613 | row += n; | |
1614 | i += n; | |
1615 | } | |
1616 | ||
1617 | found_row: | |
1618 | crop = max (0, (row->y + row->height) - max_y); | |
1619 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
1620 | make_number (i), | |
1621 | make_number (row->y), | |
1622 | make_number (crop)); | |
1623 | } | |
d653c8cc | 1624 | |
a7ca3326 | 1625 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1626 | 0, 1, 0, |
1627 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1628 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1629 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1630 | never called with WINDOW as its argument, or the value set by that | |
1631 | function was internally reset since its last call. WINDOW defaults to | |
1632 | the selected window. | |
1633 | ||
1634 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1635 | from displaying another buffer in it. `get-lru-window' and | |
1636 | `get-largest-window' treat dedicated windows specially. | |
1637 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1638 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1639 | ||
1640 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1641 | window, unless that window is "strongly" dedicated to its buffer, that | |
1642 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1643 | (Lisp_Object window) |
7ab12479 JB |
1644 | { |
1645 | return decode_window (window)->dedicated; | |
1646 | } | |
1647 | ||
d207b766 RS |
1648 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1649 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1650 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1651 | WINDOW must be a live window and defaults to the selected one. FLAG |
1652 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1653 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1654 | |
7bfac547 MR |
1655 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1656 | from displaying another buffer in it. `get-lru-window' and | |
1657 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1658 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1659 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1660 | and the containing frame. | |
7bfac547 MR |
1661 | |
1662 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1663 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1664 | displayed by a window, unless that window is strongly dedicated to its | |
1665 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1666 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1667 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1668 | { |
1669 | register struct window *w = decode_window (window); | |
1670 | ||
d653c8cc | 1671 | w->dedicated = flag; |
7ab12479 JB |
1672 | return w->dedicated; |
1673 | } | |
1674 | ||
496e208e MR |
1675 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1676 | 0, 1, 0, | |
1677 | doc: /* Return buffers previously shown in WINDOW. | |
1678 | WINDOW must be a live window and defaults to the selected one. | |
1679 | ||
1680 | The return value is either nil or a list of <buffer, window-start, | |
1681 | window-point> triples where buffer was previously shown in WINDOW. */) | |
1682 | (Lisp_Object window) | |
1683 | { | |
1684 | return decode_window (window)->prev_buffers; | |
1685 | } | |
1686 | ||
1687 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1688 | Sset_window_prev_buffers, 2, 2, 0, | |
1689 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
1690 | WINDOW must be a live window and defaults to the selected one. Return | |
1691 | PREV-BUFFERS. | |
1692 | ||
1693 | PREV-BUFFERS should be either nil or a list of <buffer, window-start, | |
1694 | window-point> triples where buffer was previously shown in WINDOW. */) | |
1695 | (Lisp_Object window, Lisp_Object prev_buffers) | |
1696 | { | |
1697 | return decode_any_window (window)->prev_buffers = prev_buffers; | |
1698 | } | |
1699 | ||
1700 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1701 | 0, 1, 0, | |
1702 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1703 | WINDOW must be a live window and defaults to the selected one. */) | |
1704 | (Lisp_Object window) | |
1705 | { | |
1706 | return decode_window (window)->next_buffers; | |
1707 | } | |
1708 | ||
1709 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1710 | Sset_window_next_buffers, 2, 2, 0, | |
1711 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
1712 | WINDOW must be a live window and defaults to the selected one. Return | |
1713 | NEXT-BUFFERS. | |
1714 | ||
1715 | NEXT-BUFFERS should be either nil or a list of buffers that have been | |
1716 | recently re-shown in WINDOW. */) | |
1717 | (Lisp_Object window, Lisp_Object next_buffers) | |
1718 | { | |
1719 | return decode_any_window (window)->next_buffers = next_buffers; | |
1720 | } | |
d653c8cc | 1721 | |
cfbb2395 JB |
1722 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1723 | 0, 1, 0, | |
d653c8cc MR |
1724 | doc: /* Return the parameters of WINDOW and their values. |
1725 | WINDOW defaults to the selected window. The return value is a list of | |
1726 | elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1727 | (Lisp_Object window) |
cfbb2395 | 1728 | { |
496e208e | 1729 | return Fcopy_alist (decode_any_window (window)->window_parameters); |
cfbb2395 JB |
1730 | } |
1731 | ||
1732 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1733 | 2, 2, 0, | |
d653c8cc MR |
1734 | doc: /* Return WINDOW's value for PARAMETER. |
1735 | WINDOW defaults to the selected window. */) | |
5842a27b | 1736 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1737 | { |
927abf37 JB |
1738 | Lisp_Object result; |
1739 | ||
496e208e | 1740 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1741 | return CDR_SAFE (result); |
cfbb2395 JB |
1742 | } |
1743 | ||
cfbb2395 JB |
1744 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1745 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1746 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1747 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1748 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1749 | { |
496e208e | 1750 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1751 | Lisp_Object old_alist_elt; |
1752 | ||
1753 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1754 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1755 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1756 | else | |
1757 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1758 | return value; |
cfbb2395 JB |
1759 | } |
1760 | ||
7ab12479 JB |
1761 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1762 | 0, 1, 0, | |
c85322d0 EZ |
1763 | doc: /* Return the display-table that WINDOW is using. |
1764 | WINDOW defaults to the selected window. */) | |
5842a27b | 1765 | (Lisp_Object window) |
7ab12479 JB |
1766 | { |
1767 | return decode_window (window)->display_table; | |
1768 | } | |
1769 | ||
5500c422 GM |
1770 | /* Get the display table for use on window W. This is either W's |
1771 | display table or W's buffer's display table. Ignore the specified | |
1772 | tables if they are not valid; if no valid table is specified, | |
1773 | return 0. */ | |
7ab12479 | 1774 | |
319315f1 | 1775 | struct Lisp_Char_Table * |
971de7fb | 1776 | window_display_table (struct window *w) |
7ab12479 | 1777 | { |
c756cdbe GM |
1778 | struct Lisp_Char_Table *dp = NULL; |
1779 | ||
1780 | if (DISP_TABLE_P (w->display_table)) | |
1781 | dp = XCHAR_TABLE (w->display_table); | |
1782 | else if (BUFFERP (w->buffer)) | |
1783 | { | |
1784 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1785 | |
4b4deea2 TT |
1786 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1787 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1788 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1789 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1790 | } | |
171d003c | 1791 | |
c756cdbe | 1792 | return dp; |
7ab12479 JB |
1793 | } |
1794 | ||
3a2712f9 | 1795 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1796 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1797 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1798 | { |
1799 | register struct window *w; | |
7ab12479 JB |
1800 | |
1801 | w = decode_window (window); | |
1802 | w->display_table = table; | |
1803 | return table; | |
1804 | } | |
1805 | \f | |
2f7c71a1 AS |
1806 | static void delete_window (Lisp_Object); |
1807 | ||
7ab12479 JB |
1808 | /* Record info on buffer window w is displaying |
1809 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1810 | static void |
971de7fb | 1811 | unshow_buffer (register struct window *w) |
7ab12479 | 1812 | { |
12cae7c0 | 1813 | Lisp_Object buf; |
b73ea88e | 1814 | struct buffer *b; |
7ab12479 | 1815 | |
12cae7c0 | 1816 | buf = w->buffer; |
b73ea88e RS |
1817 | b = XBUFFER (buf); |
1818 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1819 | abort (); |
1820 | ||
573f41ab | 1821 | #if 0 |
7ab12479 JB |
1822 | if (w == XWINDOW (selected_window) |
1823 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1824 | /* Do this except when the selected window's buffer | |
1825 | is being removed from some other window. */ | |
573f41ab RS |
1826 | #endif |
1827 | /* last_window_start records the start position that this buffer | |
1828 | had in the last window to be disconnected from it. | |
1829 | Now that this statement is unconditional, | |
1830 | it is possible for the buffer to be displayed in the | |
1831 | selected window, while last_window_start reflects another | |
1832 | window which was recently showing the same buffer. | |
1833 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1834 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1835 | |
1836 | /* Point in the selected window's buffer | |
1837 | is actually stored in that buffer, and the window's pointm isn't used. | |
1838 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1839 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1840 | /* This line helps to fix Horsley's testbug.el bug. */ | |
4b4deea2 TT |
1841 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1842 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
1843 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) | |
b73ea88e RS |
1844 | temp_set_point_both (b, |
1845 | clip_to_bounds (BUF_BEGV (b), | |
1846 | XMARKER (w->pointm)->charpos, | |
1847 | BUF_ZV (b)), | |
1848 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1849 | marker_byte_position (w->pointm), | |
1850 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1851 | |
4b4deea2 TT |
1852 | if (WINDOWP (BVAR (b, last_selected_window)) |
1853 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
1854 | BVAR (b, last_selected_window) = Qnil; | |
7ab12479 JB |
1855 | } |
1856 | ||
1a13852e MR |
1857 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1858 | means change window structure only. Otherwise store geometry and | |
1859 | other settings as well. */ | |
dfcf069d | 1860 | static void |
1a13852e | 1861 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1862 | { |
1863 | register Lisp_Object tem; | |
1a13852e | 1864 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1865 | |
1a13852e MR |
1866 | /* If OLD is its frame's root window, then NEW is the new |
1867 | root window for that frame. */ | |
7f4161e0 | 1868 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
1a13852e MR |
1869 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = new; |
1870 | ||
1871 | if (setflag) | |
1872 | { | |
1873 | n->left_col = o->left_col; | |
1874 | n->top_line = o->top_line; | |
1875 | n->total_cols = o->total_cols; | |
1876 | n->total_lines = o->total_lines; | |
1877 | n->normal_cols = o->normal_cols; | |
1878 | o->normal_cols = make_float (1.0); | |
1879 | n->normal_lines = o->normal_lines; | |
1880 | o->normal_lines = make_float (1.0); | |
1881 | n->desired_matrix = n->current_matrix = 0; | |
1882 | n->vscroll = 0; | |
1883 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1884 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
1885 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
1886 | n->phys_cursor_type = -1; | |
1887 | n->phys_cursor_width = -1; | |
1888 | n->must_be_updated_p = 0; | |
1889 | n->pseudo_window_p = 0; | |
1890 | XSETFASTINT (n->window_end_vpos, 0); | |
1891 | XSETFASTINT (n->window_end_pos, 0); | |
1892 | n->window_end_valid = Qnil; | |
1893 | n->frozen_window_start_p = 0; | |
1894 | n->orig_top_line = n->orig_total_lines = Qnil; | |
1895 | } | |
1896 | ||
1897 | n->next = tem = o->next; | |
265a9e55 | 1898 | if (!NILP (tem)) |
1a13852e | 1899 | XWINDOW (tem)->prev = new; |
7ab12479 | 1900 | |
1a13852e | 1901 | n->prev = tem = o->prev; |
265a9e55 | 1902 | if (!NILP (tem)) |
1a13852e | 1903 | XWINDOW (tem)->next = new; |
7ab12479 | 1904 | |
1a13852e | 1905 | n->parent = tem = o->parent; |
265a9e55 | 1906 | if (!NILP (tem)) |
7ab12479 JB |
1907 | { |
1908 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1a13852e | 1909 | XWINDOW (tem)->vchild = new; |
7ab12479 | 1910 | if (EQ (XWINDOW (tem)->hchild, old)) |
1a13852e | 1911 | XWINDOW (tem)->hchild = new; |
7ab12479 | 1912 | } |
1a13852e MR |
1913 | } |
1914 | ||
1915 | /* If window WINDOW and its parent window are iso-combined, merge | |
1916 | WINDOW's children into those of its parent window and mark WINDOW as | |
1917 | deleted. */ | |
1918 | ||
1919 | static void | |
1920 | recombine_windows (Lisp_Object window) | |
1921 | { | |
1922 | struct window *w, *p, *c; | |
1923 | Lisp_Object parent, child; | |
1924 | int horflag; | |
1925 | ||
1926 | w = XWINDOW (window); | |
1927 | parent = w->parent; | |
1928 | if (!NILP (parent) && NILP (w->nest)) | |
1929 | { | |
1930 | p = XWINDOW (parent); | |
1931 | if (((!NILP (p->vchild) && !NILP (w->vchild)) | |
1932 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1933 | /* WINDOW and PARENT are both either a vertical or a horizontal | |
1934 | combination. */ | |
1935 | { | |
1936 | horflag = NILP (w->vchild); | |
1937 | child = horflag ? w->hchild : w->vchild; | |
1938 | c = XWINDOW (child); | |
1939 | ||
1940 | /* Splice WINDOW's children into its parent's children and | |
1941 | assign new normal sizes. */ | |
1942 | if (NILP (w->prev)) | |
1943 | if (horflag) | |
1944 | p->hchild = child; | |
1945 | else | |
1946 | p->vchild = child; | |
1947 | else | |
1948 | { | |
1949 | c->prev = w->prev; | |
1950 | XWINDOW (w->prev)->next = child; | |
1951 | } | |
1952 | ||
1953 | while (c) | |
1954 | { | |
1955 | c->parent = parent; | |
1956 | ||
1957 | if (horflag) | |
1958 | c->normal_cols | |
1959 | = make_float (XFLOATINT (c->total_cols) | |
1960 | / XFLOATINT (p->total_cols)); | |
1961 | else | |
1962 | c->normal_lines | |
1963 | = make_float (XFLOATINT (c->total_lines) | |
1964 | / XFLOATINT (p->total_lines)); | |
1965 | ||
1966 | if (NILP (c->next)) | |
1967 | { | |
1968 | if (!NILP (w->next)) | |
1969 | { | |
1970 | c->next = w->next; | |
1971 | XWINDOW (c->next)->prev = child; | |
1972 | } | |
1973 | ||
1974 | c = 0; | |
1975 | } | |
1976 | else | |
1977 | { | |
1978 | child = c->next; | |
1979 | c = XWINDOW (child); | |
1980 | } | |
1981 | } | |
7ab12479 | 1982 | |
1a13852e MR |
1983 | /* WINDOW can be deleted now. */ |
1984 | w->vchild = w->hchild = Qnil; | |
1985 | } | |
1986 | } | |
7ab12479 JB |
1987 | } |
1988 | ||
1a13852e MR |
1989 | /* If WINDOW can be deleted, delete it. */ |
1990 | Lisp_Object | |
1991 | delete_deletable_window (Lisp_Object window) | |
1992 | { | |
1993 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
1994 | call1 (Qdelete_window, window); | |
1995 | } | |
1996 | \f | |
a7ca3326 | 1997 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", |
8fef9de1 MR |
1998 | doc: /* Remove WINDOW from its frame. |
1999 | WINDOW defaults to the selected window. Return nil. | |
2000 | Signal an error when WINDOW is the only window on its frame. */) | |
5842a27b | 2001 | (register Lisp_Object window) |
543f5fb1 | 2002 | { |
eeca6f6f SM |
2003 | struct frame *f; |
2004 | if (NILP (window)) | |
2005 | window = selected_window; | |
dbf64827 JB |
2006 | else |
2007 | CHECK_LIVE_WINDOW (window); | |
2008 | ||
eeca6f6f | 2009 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
543f5fb1 RS |
2010 | delete_window (window); |
2011 | ||
eeca6f6f | 2012 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
2013 | |
2014 | return Qnil; | |
2015 | } | |
2016 | ||
2f7c71a1 | 2017 | static void |
971de7fb | 2018 | delete_window (register Lisp_Object window) |
7ab12479 JB |
2019 | { |
2020 | register Lisp_Object tem, parent, sib; | |
2021 | register struct window *p; | |
2022 | register struct window *par; | |
951f9df5 | 2023 | struct frame *f; |
7ab12479 | 2024 | |
605be8af JB |
2025 | /* Because this function is called by other C code on non-leaf |
2026 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
2027 | so we can't decode_window here. */ | |
eeca6f6f | 2028 | CHECK_WINDOW (window); |
7ab12479 | 2029 | p = XWINDOW (window); |
605be8af | 2030 | |
0d384044 | 2031 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
2032 | if (NILP (p->buffer) |
2033 | && NILP (p->hchild) | |
2034 | && NILP (p->vchild)) | |
296b535c | 2035 | return; |
605be8af | 2036 | |
7ab12479 | 2037 | parent = p->parent; |
265a9e55 | 2038 | if (NILP (parent)) |
7ab12479 JB |
2039 | error ("Attempt to delete minibuffer or sole ordinary window"); |
2040 | par = XWINDOW (parent); | |
2041 | ||
2042 | windows_or_buffers_changed++; | |
67492200 | 2043 | Vwindow_list = Qnil; |
951f9df5 GM |
2044 | f = XFRAME (WINDOW_FRAME (p)); |
2045 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 2046 | |
605be8af JB |
2047 | /* Are we trying to delete any frame's selected window? */ |
2048 | { | |
192c3131 | 2049 | Lisp_Object swindow, pwindow; |
605be8af | 2050 | |
0def0403 RS |
2051 | /* See if the frame's selected window is either WINDOW |
2052 | or any subwindow of it, by finding all that window's parents | |
2053 | and comparing each one with WINDOW. */ | |
192c3131 | 2054 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 2055 | |
192c3131 | 2056 | while (1) |
0def0403 | 2057 | { |
192c3131 RS |
2058 | pwindow = swindow; |
2059 | while (!NILP (pwindow)) | |
2060 | { | |
2061 | if (EQ (window, pwindow)) | |
2062 | break; | |
2063 | pwindow = XWINDOW (pwindow)->parent; | |
2064 | } | |
2065 | ||
2066 | /* If the window being deleted is not a parent of SWINDOW, | |
2067 | then SWINDOW is ok as the new selected window. */ | |
2068 | if (!EQ (window, pwindow)) | |
0def0403 | 2069 | break; |
192c3131 | 2070 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 2071 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
2072 | |
2073 | /* If we get back to the frame's selected window, | |
2074 | it means there was no acceptable alternative, | |
2075 | so we cannot delete. */ | |
2076 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2077 | error ("Cannot delete window"); | |
0def0403 RS |
2078 | } |
2079 | ||
192c3131 RS |
2080 | /* If we need to change SWINDOW, do it. */ |
2081 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 2082 | { |
605be8af JB |
2083 | /* If we're about to delete the selected window on the |
2084 | selected frame, then we should use Fselect_window to select | |
2085 | the new window. On the other hand, if we're about to | |
2086 | delete the selected window on any other frame, we shouldn't do | |
2087 | anything but set the frame's selected_window slot. */ | |
192c3131 | 2088 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 2089 | Fselect_window (swindow, Qnil); |
605be8af | 2090 | else |
192c3131 | 2091 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
2092 | } |
2093 | } | |
7ab12479 | 2094 | |
0d384044 RS |
2095 | /* Now we know we can delete this one. */ |
2096 | window_deletion_count++; | |
2097 | ||
7ab12479 JB |
2098 | tem = p->buffer; |
2099 | /* tem is null for dummy parent windows | |
2100 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 2101 | if (!NILP (tem)) |
7ab12479 JB |
2102 | { |
2103 | unshow_buffer (p); | |
2d0834cc SM |
2104 | unchain_marker (XMARKER (p->pointm)); |
2105 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
2106 | } |
2107 | ||
05e71564 GM |
2108 | /* Free window glyph matrices. It is sure that they are allocated |
2109 | again when ADJUST_GLYPHS is called. Block input so that expose | |
2110 | events and other events that access glyph matrices are not | |
2111 | processed while we are changing them. */ | |
2112 | BLOCK_INPUT; | |
951f9df5 | 2113 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 2114 | |
7ab12479 | 2115 | tem = p->next; |
265a9e55 | 2116 | if (!NILP (tem)) |
7ab12479 JB |
2117 | XWINDOW (tem)->prev = p->prev; |
2118 | ||
2119 | tem = p->prev; | |
265a9e55 | 2120 | if (!NILP (tem)) |
7ab12479 JB |
2121 | XWINDOW (tem)->next = p->next; |
2122 | ||
2123 | if (EQ (window, par->hchild)) | |
2124 | par->hchild = p->next; | |
2125 | if (EQ (window, par->vchild)) | |
2126 | par->vchild = p->next; | |
2127 | ||
2128 | /* Find one of our siblings to give our space to. */ | |
2129 | sib = p->prev; | |
265a9e55 | 2130 | if (NILP (sib)) |
7ab12479 JB |
2131 | { |
2132 | /* If p gives its space to its next sibling, that sibling needs | |
2133 | to have its top/left side pulled back to where p's is. | |
2134 | set_window_{height,width} will re-position the sibling's | |
2135 | children. */ | |
2136 | sib = p->next; | |
949cf20f KS |
2137 | XWINDOW (sib)->top_line = p->top_line; |
2138 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
2139 | } |
2140 | ||
2141 | /* Stretch that sibling. */ | |
265a9e55 | 2142 | if (!NILP (par->vchild)) |
7ab12479 | 2143 | set_window_height (sib, |
949cf20f | 2144 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 2145 | 1); |
265a9e55 | 2146 | if (!NILP (par->hchild)) |
7ab12479 | 2147 | set_window_width (sib, |
949cf20f | 2148 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
2149 | 1); |
2150 | ||
2151 | /* If parent now has only one child, | |
2152 | put the child into the parent's place. */ | |
7ab12479 | 2153 | tem = par->hchild; |
265a9e55 | 2154 | if (NILP (tem)) |
7ab12479 | 2155 | tem = par->vchild; |
5494d7bc | 2156 | if (NILP (XWINDOW (tem)->next)) { |
1a13852e | 2157 | replace_window (parent, tem, 1); |
5494d7bc JD |
2158 | par = XWINDOW (tem); |
2159 | } | |
605be8af JB |
2160 | |
2161 | /* Since we may be deleting combination windows, we must make sure that | |
2162 | not only p but all its children have been marked as deleted. */ | |
2163 | if (! NILP (p->hchild)) | |
fa8a67e6 | 2164 | delete_all_subwindows (p->hchild); |
605be8af | 2165 | else if (! NILP (p->vchild)) |
fa8a67e6 | 2166 | delete_all_subwindows (p->vchild); |
605be8af JB |
2167 | |
2168 | /* Mark this window as deleted. */ | |
2169 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 2170 | |
5494d7bc JD |
2171 | if (! NILP (par->parent)) |
2172 | par = XWINDOW (par->parent); | |
2173 | ||
2174 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
2175 | one of them. */ | |
ae12ecd7 | 2176 | |
5494d7bc JD |
2177 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
2178 | { | |
2179 | p = XWINDOW (par->vchild); | |
2180 | par->vchild = p->vchild; | |
2181 | tem = p->vchild; | |
2182 | } | |
2183 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
2184 | { | |
2185 | p = XWINDOW (par->hchild); | |
2186 | par->hchild = p->hchild; | |
2187 | tem = p->hchild; | |
2188 | } | |
2189 | else | |
2190 | p = 0; | |
2191 | ||
2192 | if (p) | |
2193 | { | |
2194 | while (! NILP (tem)) { | |
2195 | XWINDOW (tem)->parent = p->parent; | |
2196 | if (NILP (XWINDOW (tem)->next)) | |
2197 | break; | |
2198 | tem = XWINDOW (tem)->next; | |
2199 | } | |
2200 | if (! NILP (tem)) { | |
2201 | /* The next of the v/hchild we are removing is now the next of the | |
2202 | last child for the v/hchild: | |
2203 | Before v/hchild -> v/hchild -> next1 -> next2 | |
2204 | | | |
2205 | -> next3 | |
2206 | After: v/hchild -> next1 -> next2 -> next3 | |
2207 | */ | |
2208 | XWINDOW (tem)->next = p->next; | |
2209 | if (! NILP (p->next)) | |
2210 | XWINDOW (p->next)->prev = tem; | |
2211 | } | |
2212 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
2213 | } | |
2214 | ||
2215 | ||
5500c422 | 2216 | /* Adjust glyph matrices. */ |
951f9df5 | 2217 | adjust_glyphs (f); |
05e71564 | 2218 | UNBLOCK_INPUT; |
7ab12479 | 2219 | } |
67492200 GM |
2220 | |
2221 | ||
7ab12479 | 2222 | \f |
67492200 GM |
2223 | /*********************************************************************** |
2224 | Window List | |
2225 | ***********************************************************************/ | |
2226 | ||
f95464e4 GM |
2227 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2228 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2229 | the window_list function. */ |
67492200 GM |
2230 | |
2231 | static int | |
971de7fb | 2232 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2233 | { |
f95464e4 | 2234 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2235 | Lisp_Object window; |
2236 | XSETWINDOW (window, w); | |
212116d6 | 2237 | *list = Fcons (window, *list); |
67492200 GM |
2238 | return 1; |
2239 | } | |
2240 | ||
2241 | ||
2242 | /* Return a list of all windows, for use by next_window. If | |
2243 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2244 | list, cache it in Vwindow_list, and return that. */ | |
2245 | ||
2246 | static Lisp_Object | |
971de7fb | 2247 | window_list (void) |
67492200 GM |
2248 | { |
2249 | if (!CONSP (Vwindow_list)) | |
2250 | { | |
2251 | Lisp_Object tail; | |
212116d6 | 2252 | |
67492200 GM |
2253 | Vwindow_list = Qnil; |
2254 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
2255 | { |
2256 | Lisp_Object args[2]; | |
2257 | ||
2258 | /* We are visiting windows in canonical order, and add | |
2259 | new windows at the front of args[1], which means we | |
2260 | have to reverse this list at the end. */ | |
2261 | args[1] = Qnil; | |
2262 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
2263 | args[0] = Vwindow_list; | |
2264 | args[1] = Fnreverse (args[1]); | |
2265 | Vwindow_list = Fnconc (2, args); | |
2266 | } | |
67492200 | 2267 | } |
177c0ea7 | 2268 | |
67492200 GM |
2269 | return Vwindow_list; |
2270 | } | |
2271 | ||
2272 | ||
118ea242 GM |
2273 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2274 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2275 | |
118ea242 GM |
2276 | MINIBUF t means WINDOW may be minibuffer windows. |
2277 | `lambda' means WINDOW may not be a minibuffer window. | |
2278 | a window means a specific minibuffer window | |
67492200 | 2279 | |
118ea242 GM |
2280 | ALL_FRAMES t means search all frames, |
2281 | nil means search just current frame, | |
aa248733 MS |
2282 | `visible' means search just visible frames on the |
2283 | current terminal, | |
2284 | 0 means search visible and iconified frames on the | |
2285 | current terminal, | |
118ea242 GM |
2286 | a window means search the frame that window belongs to, |
2287 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2288 | |
2289 | static int | |
971de7fb | 2290 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2291 | { |
2292 | struct window *w = XWINDOW (window); | |
2293 | struct frame *f = XFRAME (w->frame); | |
2294 | int candidate_p = 1; | |
2295 | ||
2296 | if (!BUFFERP (w->buffer)) | |
2297 | candidate_p = 0; | |
2298 | else if (MINI_WINDOW_P (w) | |
2299 | && (EQ (minibuf, Qlambda) | |
2300 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2301 | { | |
2302 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2303 | If it is a window, consider only that one. */ | |
2304 | candidate_p = 0; | |
2305 | } | |
118ea242 GM |
2306 | else if (EQ (all_frames, Qt)) |
2307 | candidate_p = 1; | |
67492200 | 2308 | else if (NILP (all_frames)) |
118ea242 GM |
2309 | { |
2310 | xassert (WINDOWP (owindow)); | |
2311 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
2312 | } | |
67492200 GM |
2313 | else if (EQ (all_frames, Qvisible)) |
2314 | { | |
2315 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
2316 | candidate_p = FRAME_VISIBLE_P (f) |
2317 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2318 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
2319 | ||
67492200 GM |
2320 | } |
2321 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2322 | { | |
2323 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2324 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2325 | #ifdef HAVE_X_WINDOWS | |
2326 | /* Yuck!! If we've just created the frame and the | |
2327 | window-manager requested the user to place it | |
2328 | manually, the window may still not be considered | |
2329 | `visible'. I'd argue it should be at least | |
2330 | something like `iconified', but don't know how to do | |
2331 | that yet. --Stef */ | |
2332 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2333 | && !f->output_data.x->has_been_visible) | |
2334 | #endif | |
de509a60 SM |
2335 | ) |
2336 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2337 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 2338 | } |
67492200 GM |
2339 | else if (WINDOWP (all_frames)) |
2340 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
2341 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
2342 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
2343 | else if (FRAMEP (all_frames)) |
2344 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
2345 | |
2346 | return candidate_p; | |
2347 | } | |
2348 | ||
2349 | ||
2350 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2351 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2352 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2353 | |
2354 | static void | |
971de7fb | 2355 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
2356 | { |
2357 | if (NILP (*window)) | |
2358 | *window = selected_window; | |
2359 | else | |
b7826503 | 2360 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 2361 | |
67492200 GM |
2362 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2363 | does. */ | |
2364 | if (NILP (*minibuf)) | |
2365 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2366 | else if (!EQ (*minibuf, Qt)) | |
2367 | *minibuf = Qlambda; | |
177c0ea7 | 2368 | |
67492200 GM |
2369 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2370 | => count none of them, or a specific minibuffer window (the | |
2371 | active one) to count. */ | |
2372 | ||
2373 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2374 | if (NILP (*all_frames)) | |
2375 | *all_frames = (!EQ (*minibuf, Qlambda) | |
2376 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
2377 | : Qnil); | |
2378 | else if (EQ (*all_frames, Qvisible)) | |
2379 | ; | |
0f8fe9a2 | 2380 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2381 | ; |
2382 | else if (FRAMEP (*all_frames)) | |
2383 | ; | |
2384 | else if (!EQ (*all_frames, Qt)) | |
2385 | *all_frames = Qnil; | |
67492200 GM |
2386 | } |
2387 | ||
2388 | ||
ab6d1131 | 2389 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2390 | of windows. NEXT_P non-zero means return the next window. See the |
2391 | documentation string of next-window for the meaning of MINIBUF and | |
2392 | ALL_FRAMES. */ | |
2393 | ||
2394 | static Lisp_Object | |
971de7fb | 2395 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2396 | { |
2397 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2398 | |
67492200 GM |
2399 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2400 | return the first window on the frame. */ | |
2401 | if (FRAMEP (all_frames) | |
2402 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
2403 | return Fframe_first_window (all_frames); | |
177c0ea7 | 2404 | |
212116d6 | 2405 | if (next_p) |
67492200 GM |
2406 | { |
2407 | Lisp_Object list; | |
177c0ea7 | 2408 | |
67492200 GM |
2409 | /* Find WINDOW in the list of all windows. */ |
2410 | list = Fmemq (window, window_list ()); | |
2411 | ||
2412 | /* Scan forward from WINDOW to the end of the window list. */ | |
2413 | if (CONSP (list)) | |
2414 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2415 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2416 | break; |
2417 | ||
2418 | /* Scan from the start of the window list up to WINDOW. */ | |
2419 | if (!CONSP (list)) | |
2420 | for (list = Vwindow_list; | |
2421 | CONSP (list) && !EQ (XCAR (list), window); | |
2422 | list = XCDR (list)) | |
118ea242 | 2423 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2424 | break; |
2425 | ||
2426 | if (CONSP (list)) | |
2427 | window = XCAR (list); | |
2428 | } | |
2429 | else | |
2430 | { | |
2431 | Lisp_Object candidate, list; | |
177c0ea7 | 2432 | |
67492200 GM |
2433 | /* Scan through the list of windows for candidates. If there are |
2434 | candidate windows in front of WINDOW, the last one of these | |
2435 | is the one we want. If there are candidates following WINDOW | |
2436 | in the list, again the last one of these is the one we want. */ | |
2437 | candidate = Qnil; | |
2438 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2439 | { | |
2440 | if (EQ (XCAR (list), window)) | |
2441 | { | |
2442 | if (WINDOWP (candidate)) | |
2443 | break; | |
2444 | } | |
118ea242 GM |
2445 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2446 | all_frames)) | |
67492200 GM |
2447 | candidate = XCAR (list); |
2448 | } | |
2449 | ||
2450 | if (WINDOWP (candidate)) | |
2451 | window = candidate; | |
2452 | } | |
2453 | ||
2454 | return window; | |
2455 | } | |
7ab12479 | 2456 | |
7ab12479 | 2457 | |
a7ca3326 | 2458 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
2459 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
2460 | WINDOW defaults to the selected window. The optional arguments | |
2461 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 2462 | |
ab6d1131 MR |
2463 | MINIBUF t means consider the minibuffer window even if the |
2464 | minibuffer is not active. MINIBUF nil or omitted means consider | |
2465 | the minibuffer window only if the minibuffer is active. Any | |
2466 | other value means do not consider the minibuffer window even if | |
2467 | the minibuffer is active. | |
fdb82f93 PJ |
2468 | |
2469 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
2470 | is active, all windows on all frames that share that minibuffer |
2471 | are considered too. Therefore, if you are using a separate | |
2472 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
2473 | counts, `next-window' considers the windows in the frame from | |
2474 | which you entered the minibuffer, as well as the minibuffer | |
2475 | window. | |
2476 | ||
2477 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
2478 | frame, plus the minibuffer window if specified by the MINIBUF | |
2479 | argument, see above. If the minibuffer counts, consider all | |
2480 | windows on all frames that share that minibuffer too. | |
2481 | ALL-FRAMES t means consider all windows on all existing frames. | |
2482 | ALL-FRAMES `visible' means consider all windows on all visible | |
aa248733 | 2483 | frames on the current terminal. |
ab6d1131 | 2484 | ALL-FRAMES 0 means consider all windows on all visible and |
aa248733 | 2485 | iconified frames on the current terminal. |
ab6d1131 MR |
2486 | ALL-FRAMES a frame means consider all windows on that frame only. |
2487 | Anything else means consider all windows on WINDOW's frame and no | |
2488 | others. | |
fdb82f93 PJ |
2489 | |
2490 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2491 | `next-window' to iterate through the entire cycle of acceptable | |
2492 | windows, eventually ending up back at the window you started with. | |
2493 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2494 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2495 | { |
67492200 | 2496 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2497 | } |
2498 | ||
67492200 | 2499 | |
26f6279d | 2500 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
2501 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
2502 | WINDOW defaults to the selected window. The optional arguments | |
2503 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
2504 | For the precise meaning of these arguments see `next-window'. | |
2505 | ||
2506 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2507 | use `previous-window' to iterate through the entire cycle of | |
2508 | acceptable windows, eventually ending up back at the window you | |
2509 | started with. `next-window' traverses the same cycle, in the | |
2510 | reverse order. */) | |
5842a27b | 2511 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2512 | { |
67492200 | 2513 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2514 | } |
2515 | ||
67492200 | 2516 | |
62c07cc7 | 2517 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2518 | doc: /* Select another window in cyclic ordering of windows. |
2519 | COUNT specifies the number of windows to skip, starting with the | |
2520 | selected window, before making the selection. If COUNT is | |
2521 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2522 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2523 | window, so select the selected window. In an interactive call, | |
2524 | COUNT is the numeric prefix argument. Return nil. | |
2525 | ||
2526 | This function uses `next-window' for finding the window to select. | |
2527 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2528 | but the MINIBUF argument of `next-window' is always effectively | |
2529 | nil. */) | |
5842a27b | 2530 | (Lisp_Object count, Lisp_Object all_frames) |
7ab12479 | 2531 | { |
67492200 GM |
2532 | Lisp_Object window; |
2533 | int i; | |
7ab12479 | 2534 | |
ab6d1131 | 2535 | CHECK_NUMBER (count); |
67492200 | 2536 | window = selected_window; |
177c0ea7 | 2537 | |
ab6d1131 | 2538 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2539 | window = Fnext_window (window, Qnil, all_frames); |
2540 | for (; i < 0; ++i) | |
2541 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2542 | |
14d87dc9 | 2543 | Fselect_window (window, Qnil); |
7ab12479 JB |
2544 | return Qnil; |
2545 | } | |
67492200 GM |
2546 | |
2547 | ||
ab6d1131 | 2548 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2549 | for `next-window'. */ |
2550 | ||
2551 | static Lisp_Object | |
971de7fb | 2552 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2553 | { |
403de3b4 | 2554 | Lisp_Object tail, list, rest; |
67492200 GM |
2555 | |
2556 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2557 | list = Qnil; | |
177c0ea7 | 2558 | |
67492200 | 2559 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2560 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2561 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2562 | |
403de3b4 RS |
2563 | /* Rotate the list to start with WINDOW. */ |
2564 | list = Fnreverse (list); | |
2565 | rest = Fmemq (window, list); | |
2566 | if (!NILP (rest) && !EQ (rest, list)) | |
2567 | { | |
1725a7c9 | 2568 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2569 | ; |
2570 | XSETCDR (tail, Qnil); | |
2571 | list = nconc2 (rest, list); | |
2572 | } | |
2573 | return list; | |
67492200 GM |
2574 | } |
2575 | ||
2576 | ||
abde8f8c MR |
2577 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2578 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2579 | FRAME nil or omitted means use the selected frame. | |
2580 | WINDOW nil or omitted means use the selected window. | |
2581 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2582 | MINIBUF nil or omitted means include the minibuffer window only | |
2583 | if it's active. | |
2584 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2585 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2586 | { | |
2587 | if (NILP (window)) | |
2588 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; | |
2589 | CHECK_WINDOW (window); | |
2590 | if (NILP (frame)) | |
2591 | frame = selected_frame; | |
2592 | ||
2593 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2594 | error ("Window is on a different frame"); | |
2595 | ||
2596 | return window_list_1 (window, minibuf, frame); | |
2597 | } | |
2598 | ||
2599 | ||
1a13852e MR |
2600 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2601 | doc: /* Return a list of all live windows. | |
2602 | WINDOW specifies the first window to list and defaults to the selected | |
2603 | window. | |
2604 | ||
2605 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2606 | window only if the minibuffer is active. MINIBUF t means consider the | |
2607 | minibuffer window even if the minibuffer is not active. Any other value | |
2608 | means do not consider the minibuffer window even if the minibuffer is | |
2609 | active. | |
2610 | ||
2611 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2612 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2613 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2614 | frames that share that minibuffer too. The following non-nil values of | |
2615 | ALL-FRAMES have special meanings: | |
2616 | ||
2617 | - t means consider all windows on all existing frames. | |
2618 | ||
2619 | - `visible' means consider all windows on all visible frames. | |
2620 | ||
2621 | - 0 (the number zero) means consider all windows on all visible and | |
2622 | iconified frames. | |
2623 | ||
2624 | - A frame means consider all windows on that frame only. | |
2625 | ||
2626 | Anything else means consider all windows on WINDOW's frame and no | |
2627 | others. | |
2628 | ||
2629 | If WINDOW is not on the list of windows returned, some other window will | |
2630 | be listed first but no error is signalled. */) | |
2631 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) | |
2632 | { | |
2633 | return window_list_1 (window, minibuf, all_frames); | |
2634 | } | |
7ab12479 JB |
2635 | \f |
2636 | /* Look at all windows, performing an operation specified by TYPE | |
2637 | with argument OBJ. | |
75d8f668 | 2638 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2639 | Qnil, look at just the selected frame; |
89bca612 | 2640 | Qvisible, look at visible frames; |
75d8f668 | 2641 | a frame, just look at windows on that frame. |
85fe3b5e | 2642 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2643 | |
2644 | enum window_loop | |
2645 | { | |
2646 | WINDOW_LOOP_UNUSED, | |
2647 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
7ab12479 JB |
2648 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ |
2649 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2650 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2651 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2652 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2653 | }; |
2654 | ||
2655 | static Lisp_Object | |
971de7fb | 2656 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2657 | { |
118ea242 GM |
2658 | Lisp_Object window, windows, best_window, frame_arg; |
2659 | struct frame *f; | |
ffdc852d | 2660 | struct gcpro gcpro1; |
177c0ea7 | 2661 | |
44fa5b1e JB |
2662 | /* If we're only looping through windows on a particular frame, |
2663 | frame points to that frame. If we're looping through windows | |
2664 | on all frames, frame is 0. */ | |
2665 | if (FRAMEP (frames)) | |
118ea242 | 2666 | f = XFRAME (frames); |
44fa5b1e | 2667 | else if (NILP (frames)) |
118ea242 | 2668 | f = SELECTED_FRAME (); |
7ab12479 | 2669 | else |
118ea242 | 2670 | f = NULL; |
177c0ea7 | 2671 | |
118ea242 | 2672 | if (f) |
89bca612 | 2673 | frame_arg = Qlambda; |
0f8fe9a2 | 2674 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2675 | frame_arg = frames; |
89bca612 RS |
2676 | else if (EQ (frames, Qvisible)) |
2677 | frame_arg = frames; | |
118ea242 GM |
2678 | else |
2679 | frame_arg = Qt; | |
7ab12479 | 2680 | |
89bca612 RS |
2681 | /* frame_arg is Qlambda to stick to one frame, |
2682 | Qvisible to consider all visible frames, | |
2683 | or Qt otherwise. */ | |
2684 | ||
7ab12479 | 2685 | /* Pick a window to start with. */ |
017b2bad | 2686 | if (WINDOWP (obj)) |
118ea242 GM |
2687 | window = obj; |
2688 | else if (f) | |
2689 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2690 | else |
118ea242 | 2691 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2692 | |
cd2904bd | 2693 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2694 | GCPRO1 (windows); |
7ab12479 | 2695 | best_window = Qnil; |
118ea242 | 2696 | |
e67a1dea | 2697 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2698 | { |
118ea242 | 2699 | struct window *w; |
177c0ea7 | 2700 | |
118ea242 GM |
2701 | window = XCAR (windows); |
2702 | w = XWINDOW (window); | |
177c0ea7 | 2703 | |
118ea242 GM |
2704 | /* Note that we do not pay attention here to whether the frame |
2705 | is visible, since Fwindow_list skips non-visible frames if | |
2706 | that is desired, under the control of frame_arg. */ | |
2707 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2708 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2709 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2710 | || (mini && minibuf_level > 0)) |
2711 | switch (type) | |
2712 | { | |
2713 | case GET_BUFFER_WINDOW: | |
118ea242 | 2714 | if (EQ (w->buffer, obj) |
5c204627 RS |
2715 | /* Don't find any minibuffer window |
2716 | except the one that is currently in use. */ | |
118ea242 GM |
2717 | && (MINI_WINDOW_P (w) |
2718 | ? EQ (window, minibuf_window) | |
2719 | : 1)) | |
2720 | { | |
5ddc1b75 GM |
2721 | if (NILP (best_window)) |
2722 | best_window = window; | |
2723 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2724 | /* Prefer to return selected-window. */ |
2725 | RETURN_UNGCPRO (window); | |
2726 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2727 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2728 | best_window = window; |
118ea242 | 2729 | } |
7ab12479 JB |
2730 | break; |
2731 | ||
7ab12479 | 2732 | case DELETE_OTHER_WINDOWS: |
118ea242 GM |
2733 | if (!EQ (window, obj)) |
2734 | Fdelete_window (window); | |
7ab12479 JB |
2735 | break; |
2736 | ||
2737 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2738 | if (EQ (w->buffer, obj)) |
7ab12479 | 2739 | { |
4554d213 | 2740 | struct frame *fr = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2741 | |
2742 | /* If this window is dedicated, and in a frame of its own, | |
2743 | kill the frame. */ | |
4554d213 | 2744 | if (EQ (window, FRAME_ROOT_WINDOW (fr)) |
118ea242 | 2745 | && !NILP (w->dedicated) |
4554d213 | 2746 | && other_visible_frames (fr)) |
7ab12479 | 2747 | { |
3548e138 RS |
2748 | /* Skip the other windows on this frame. |
2749 | There might be one, the minibuffer! */ | |
118ea242 GM |
2750 | while (CONSP (XCDR (windows)) |
2751 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2752 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2753 | windows = XCDR (windows); | |
177c0ea7 | 2754 | |
3548e138 | 2755 | /* Now we can safely delete the frame. */ |
56f2de10 | 2756 | delete_frame (w->frame, Qnil); |
118ea242 GM |
2757 | } |
2758 | else if (NILP (w->parent)) | |
2759 | { | |
2760 | /* If we're deleting the buffer displayed in the | |
2761 | only window on the frame, find a new buffer to | |
2762 | display there. */ | |
2763 | Lisp_Object buffer; | |
2764 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1c33c906 MR |
2765 | /* Reset dedicated state of window. */ |
2766 | w->dedicated = Qnil; | |
949cf20f | 2767 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2768 | if (EQ (window, selected_window)) |
2769 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2770 | } |
2771 | else | |
118ea242 | 2772 | Fdelete_window (window); |
7ab12479 JB |
2773 | } |
2774 | break; | |
2775 | ||
7ab12479 | 2776 | case UNSHOW_BUFFER: |
118ea242 | 2777 | if (EQ (w->buffer, obj)) |
7ab12479 | 2778 | { |
118ea242 | 2779 | Lisp_Object buffer; |
4554d213 | 2780 | struct frame *fr = XFRAME (w->frame); |
177c0ea7 | 2781 | |
7ab12479 | 2782 | /* Find another buffer to show in this window. */ |
118ea242 | 2783 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2784 | |
38ab08d1 RS |
2785 | /* If this window is dedicated, and in a frame of its own, |
2786 | kill the frame. */ | |
4554d213 | 2787 | if (EQ (window, FRAME_ROOT_WINDOW (fr)) |
118ea242 | 2788 | && !NILP (w->dedicated) |
4554d213 | 2789 | && other_visible_frames (fr)) |
45945a7b RS |
2790 | { |
2791 | /* Skip the other windows on this frame. | |
2792 | There might be one, the minibuffer! */ | |
118ea242 GM |
2793 | while (CONSP (XCDR (windows)) |
2794 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2795 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2796 | windows = XCDR (windows); | |
177c0ea7 | 2797 | |
45945a7b | 2798 | /* Now we can safely delete the frame. */ |
56f2de10 | 2799 | delete_frame (w->frame, Qnil); |
45945a7b | 2800 | } |
a5731348 SM |
2801 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2802 | { | |
4554d213 PE |
2803 | Lisp_Object window_to_delete; |
2804 | XSETWINDOW (window_to_delete, w); | |
a5731348 SM |
2805 | /* If this window is dedicated and not the only window |
2806 | in its frame, then kill it. */ | |
4554d213 | 2807 | Fdelete_window (window_to_delete); |
a5731348 | 2808 | } |
38ab08d1 | 2809 | else |
38ab08d1 RS |
2810 | { |
2811 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2812 | w->dedicated = Qnil; |
949cf20f | 2813 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2814 | if (EQ (window, selected_window)) |
2815 | Fset_buffer (w->buffer); | |
38ab08d1 | 2816 | } |
7ab12479 JB |
2817 | } |
2818 | break; | |
3f8ab7bd | 2819 | |
6b61353c KH |
2820 | case REDISPLAY_BUFFER_WINDOWS: |
2821 | if (EQ (w->buffer, obj)) | |
2822 | { | |
2823 | mark_window_display_accurate (window, 0); | |
2824 | w->update_mode_line = Qt; | |
2825 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2826 | ++update_mode_lines; | |
2827 | best_window = window; | |
2828 | } | |
2829 | break; | |
2830 | ||
3f8ab7bd RS |
2831 | /* Check for a window that has a killed buffer. */ |
2832 | case CHECK_ALL_WINDOWS: | |
118ea242 | 2833 | if (! NILP (w->buffer) |
4b4deea2 | 2834 | && NILP (BVAR (XBUFFER (w->buffer), name))) |
3f8ab7bd | 2835 | abort (); |
118ea242 | 2836 | break; |
6bbd7a29 GM |
2837 | |
2838 | case WINDOW_LOOP_UNUSED: | |
2839 | break; | |
7ab12479 | 2840 | } |
7ab12479 | 2841 | } |
7ab12479 | 2842 | |
118ea242 | 2843 | UNGCPRO; |
7ab12479 | 2844 | return best_window; |
37962e60 | 2845 | } |
605be8af | 2846 | |
3f8ab7bd RS |
2847 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2848 | ||
e3b27b31 | 2849 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2850 | void |
971de7fb | 2851 | check_all_windows (void) |
3f8ab7bd RS |
2852 | { |
2853 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2854 | } | |
2855 | ||
a7ca3326 | 2856 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2857 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2858 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2859 | the current buffer. | |
2860 | ||
2861 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2862 | ||
2863 | - t means consider all windows on all existing frames. | |
2864 | ||
2865 | - `visible' means consider all windows on all visible frames. | |
2866 | ||
2867 | - 0 (the number zero) means consider all windows on all visible | |
2868 | and iconified frames. | |
2869 | ||
2870 | - A frame means consider all windows on that frame only. | |
2871 | ||
2872 | Any other value of ALL-FRAMES means consider all windows on the | |
2873 | selected frame and no others. */) | |
2874 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2875 | { |
fec89261 MR |
2876 | Lisp_Object buffer; |
2877 | ||
2878 | if (NILP (buffer_or_name)) | |
2879 | buffer = Fcurrent_buffer (); | |
2880 | else | |
2881 | buffer = Fget_buffer (buffer_or_name); | |
2882 | ||
017b2bad | 2883 | if (BUFFERP (buffer)) |
496e208e | 2884 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2885 | else |
2886 | return Qnil; | |
2887 | } | |
2888 | ||
1a13852e MR |
2889 | Lisp_Object |
2890 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) | |
2891 | { | |
2892 | return call4 (Qresize_root_window, window, delta, horizontal, ignore); | |
2893 | } | |
2894 | ||
2895 | ||
2896 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2897 | Sdelete_other_windows_internal, 0, 2, "", | |
2898 | doc: /* Make WINDOW fill its frame. | |
2899 | Only the frame WINDOW is on is affected. WINDOW may be any window and | |
2900 | defaults to the selected one. | |
2901 | ||
2902 | Optional argument ROOT, if non-nil, must specify an internal window | |
2903 | containing WINDOW as a subwindow. If this is the case, replace ROOT by | |
2904 | WINDOW and leave alone any windows not contained in ROOT. | |
2905 | ||
2906 | When WINDOW is live try to reduce display jumps by keeping the text | |
2907 | previously visible in WINDOW in the same place on the frame. Doing this | |
2908 | depends on the value of (window-start WINDOW), so if calling this | |
2909 | function in a program gives strange scrolling, make sure the | |
2910 | window-start value is reasonable when this function is called. */) | |
2911 | (Lisp_Object window, Lisp_Object root) | |
2912 | { | |
2913 | struct window *w, *r, *s; | |
2914 | struct frame *f; | |
2915 | Lisp_Object sibling, pwindow, swindow, delta; | |
2916 | EMACS_INT startpos; | |
2917 | int top, new_top, resize_failed; | |
2918 | ||
2919 | w = decode_any_window (window); | |
2920 | XSETWINDOW (window, w); | |
2921 | f = XFRAME (w->frame); | |
2922 | ||
2923 | if (NILP (root)) | |
2924 | /* ROOT is the frame's root window. */ | |
2925 | { | |
2926 | root = FRAME_ROOT_WINDOW (f); | |
2927 | r = XWINDOW (root); | |
2928 | } | |
2929 | else | |
2930 | /* ROOT must be an ancestor of WINDOW. */ | |
2931 | { | |
2932 | r = decode_any_window (root); | |
2933 | pwindow = XWINDOW (window)->parent; | |
2934 | while (!NILP (pwindow)) | |
2935 | if (EQ (pwindow, root)) | |
2936 | break; | |
2937 | else | |
2938 | pwindow = XWINDOW (pwindow)->parent; | |
2939 | if (!EQ (pwindow, root)) | |
2940 | error ("Specified root is not an ancestor of specified window"); | |
2941 | } | |
2942 | ||
2943 | if (EQ (window, root)) | |
2944 | /* A noop. */ | |
2945 | return Qnil; | |
2946 | /* I don't understand the "top > 0" part below. If we deal with a | |
2947 | standalone minibuffer it would have been caught by the preceding | |
2948 | test. */ | |
2949 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2950 | error ("Can't expand minibuffer to full frame"); | |
2951 | ||
2952 | if (!NILP (w->buffer)) | |
2953 | { | |
2954 | startpos = marker_position (w->start); | |
2955 | top = WINDOW_TOP_EDGE_LINE (w) | |
2956 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2957 | /* Make sure WINDOW is the frame's selected window. */ | |
2958 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2959 | { | |
2960 | if (EQ (selected_frame, w->frame)) | |
2961 | Fselect_window (window, Qnil); | |
2962 | else | |
2963 | FRAME_SELECTED_WINDOW (f) = window; | |
2964 | } | |
2965 | } | |
2966 | else | |
2967 | { | |
2968 | /* See if the frame's selected window is a subwindow of WINDOW, by | |
2969 | finding all the selected window's parents and comparing each | |
2970 | one with WINDOW. If it isn't we need a new selected window for | |
2971 | this frame. */ | |
2972 | swindow = FRAME_SELECTED_WINDOW (f); | |
2973 | while (1) | |
2974 | { | |
2975 | pwindow = swindow; | |
2976 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
2977 | pwindow = XWINDOW (pwindow)->parent; | |
2978 | ||
2979 | if (EQ (window, pwindow)) | |
2980 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2981 | as the new selected window. */ | |
2982 | break; | |
2983 | else | |
2984 | /* Else try the previous window of SWINDOW. */ | |
2985 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2986 | } | |
2987 | ||
2988 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2989 | { | |
2990 | if (EQ (selected_frame, w->frame)) | |
2991 | Fselect_window (swindow, Qnil); | |
2992 | else | |
2993 | FRAME_SELECTED_WINDOW (f) = swindow; | |
2994 | } | |
2995 | } | |
2996 | ||
2997 | BLOCK_INPUT; | |
2998 | free_window_matrices (r); | |
2999 | ||
3000 | windows_or_buffers_changed++; | |
3001 | Vwindow_list = Qnil; | |
3002 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3003 | ||
3004 | if (NILP (w->buffer)) | |
3005 | { | |
3006 | resize_failed = 0; | |
3007 | /* Resize subwindows vertically. */ | |
3008 | XSETINT (delta, XINT (r->total_lines) - XINT (w->total_lines)); | |
3009 | w->top_line = r->top_line; | |
3010 | resize_root_window (window, delta, Qnil, Qnil); | |
3011 | if (resize_window_check (w, 0)) | |
3012 | resize_window_apply (w, 0); | |
3013 | else | |
3014 | { | |
3015 | resize_root_window (window, delta, Qnil, Qt); | |
3016 | if (resize_window_check (w, 0)) | |
3017 | resize_window_apply (w, 0); | |
3018 | else | |
3019 | resize_failed = 1; | |
3020 | } | |
3021 | ||
3022 | /* Resize subwindows horizontally. */ | |
3023 | if (!resize_failed) | |
3024 | { | |
3025 | w->left_col = r->left_col; | |
3026 | XSETINT (delta, XINT (r->total_cols) - XINT (w->total_cols)); | |
3027 | w->left_col = r->left_col; | |
3028 | resize_root_window (window, delta, Qt, Qnil); | |
3029 | if (resize_window_check (w, 1)) | |
3030 | resize_window_apply (w, 1); | |
3031 | else | |
3032 | { | |
3033 | resize_root_window (window, delta, Qt, Qt); | |
3034 | if (resize_window_check (w, 1)) | |
3035 | resize_window_apply (w, 1); | |
3036 | else | |
3037 | resize_failed = 1; | |
3038 | } | |
3039 | } | |
3040 | ||
3041 | if (resize_failed) | |
3042 | /* Play safe, if we still can ... */ | |
3043 | { | |
3044 | window = swindow; | |
3045 | w = XWINDOW (window); | |
3046 | } | |
3047 | } | |
3048 | ||
3049 | /* Cleanly unlink WINDOW from window-tree. */ | |
3050 | if (!NILP (w->prev)) | |
3051 | /* Get SIBLING above (on the left of) WINDOW. */ | |
3052 | { | |
3053 | sibling = w->prev; | |
3054 | s = XWINDOW (sibling); | |
3055 | s->next = w->next; | |
3056 | if (!NILP (s->next)) | |
3057 | XWINDOW (s->next)->prev = sibling; | |
3058 | } | |
3059 | else | |
3060 | /* Get SIBLING below (on the right of) WINDOW. */ | |
3061 | { | |
3062 | sibling = w->next; | |
3063 | s = XWINDOW (sibling); | |
3064 | s->prev = Qnil; | |
3065 | if (!NILP (XWINDOW (w->parent)->vchild)) | |
3066 | XWINDOW (w->parent)->vchild = sibling; | |
3067 | else | |
3068 | XWINDOW (w->parent)->hchild = sibling; | |
3069 | } | |
3070 | ||
3071 | /* Delete ROOT and all subwindows of ROOT. */ | |
3072 | if (!NILP (r->vchild)) | |
3073 | { | |
3074 | delete_all_subwindows (r->vchild); | |
3075 | r->vchild = Qnil; | |
3076 | } | |
3077 | else if (!NILP (r->hchild)) | |
3078 | { | |
3079 | delete_all_subwindows (r->hchild); | |
3080 | r->hchild = Qnil; | |
3081 | } | |
3082 | ||
3083 | replace_window (root, window, 1); | |
3084 | ||
3085 | /* Reset WINDOW's splits status. */ | |
3086 | w->splits = Qnil; | |
3087 | ||
3088 | /* This must become SWINDOW anyway ....... */ | |
3089 | if (!NILP (w->buffer) && !resize_failed) | |
3090 | { | |
3091 | /* Try to minimize scrolling, by setting the window start to the | |
3092 | point will cause the text at the old window start to be at the | |
3093 | same place on the frame. But don't try to do this if the | |
3094 | window start is outside the visible portion (as might happen | |
3095 | when the display is not current, due to typeahead). */ | |
3096 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
3097 | if (new_top != top | |
3098 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
3099 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
3100 | { | |
3101 | struct position pos; | |
3102 | struct buffer *obuf = current_buffer; | |
3103 | ||
3104 | Fset_buffer (w->buffer); | |
3105 | /* This computation used to temporarily move point, but that | |
3106 | can have unwanted side effects due to text properties. */ | |
3107 | pos = *vmotion (startpos, -top, w); | |
3108 | ||
3109 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); | |
3110 | w->window_end_valid = Qnil; | |
3111 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
3112 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
3113 | : Qnil); | |
3114 | /* We need to do this, so that the window-scroll-functions | |
3115 | get called. */ | |
3116 | w->optional_new_start = Qt; | |
3117 | ||
3118 | set_buffer_internal (obuf); | |
3119 | } | |
3120 | } | |
3121 | ||
3122 | adjust_glyphs (f); | |
3123 | UNBLOCK_INPUT; | |
3124 | ||
3125 | run_window_configuration_change_hook (f); | |
3126 | ||
3127 | return Qnil; | |
3128 | } | |
3129 | ||
3130 | ||
7ab12479 | 3131 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, |
fdb82f93 PJ |
3132 | 0, 1, "", |
3133 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
3134 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
3135 | This function tries to reduce display jumps by keeping the text |
3136 | previously visible in WINDOW in the same place on the frame. Doing this | |
3137 | depends on the value of (window-start WINDOW), so if calling this | |
3138 | function in a program gives strange scrolling, make sure the | |
3139 | window-start value is reasonable when this function is called. */) | |
5842a27b | 3140 | (Lisp_Object window) |
7ab12479 JB |
3141 | { |
3142 | struct window *w; | |
2452438f | 3143 | EMACS_INT startpos; |
85fe3b5e | 3144 | int top, new_top; |
7ab12479 | 3145 | |
265a9e55 | 3146 | if (NILP (window)) |
7ab12479 JB |
3147 | window = selected_window; |
3148 | else | |
b7826503 | 3149 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 3150 | w = XWINDOW (window); |
a2b38b3c | 3151 | |
00d3d838 | 3152 | startpos = marker_position (w->start); |
949cf20f | 3153 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 3154 | |
a2b38b3c RS |
3155 | if (MINI_WINDOW_P (w) && top > 0) |
3156 | error ("Can't expand minibuffer to full frame"); | |
3157 | ||
70728a80 | 3158 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 3159 | |
00d3d838 KH |
3160 | /* Try to minimize scrolling, by setting the window start to the point |
3161 | will cause the text at the old window start to be at the same place | |
3162 | on the frame. But don't try to do this if the window start is | |
3163 | outside the visible portion (as might happen when the display is | |
3164 | not current, due to typeahead). */ | |
949cf20f | 3165 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
3166 | if (new_top != top |
3167 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
3168 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
3169 | { | |
3170 | struct position pos; | |
3171 | struct buffer *obuf = current_buffer; | |
3172 | ||
3173 | Fset_buffer (w->buffer); | |
3174 | /* This computation used to temporarily move point, but that can | |
3175 | have unwanted side effects due to text properties. */ | |
0383eb57 | 3176 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 3177 | |
b73ea88e | 3178 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 3179 | w->window_end_valid = Qnil; |
b73ea88e RS |
3180 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
3181 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 3182 | : Qnil); |
80622eec RS |
3183 | /* We need to do this, so that the window-scroll-functions |
3184 | get called. */ | |
4d047f50 | 3185 | w->optional_new_start = Qt; |
00d3d838 KH |
3186 | |
3187 | set_buffer_internal (obuf); | |
3188 | } | |
5500c422 | 3189 | |
7ab12479 JB |
3190 | return Qnil; |
3191 | } | |
3192 | ||
3193 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
3194 | 0, 2, "bDelete windows on (buffer): ", |
3195 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
3196 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
3197 | defaults to the current buffer. | |
3198 | ||
fdb82f93 PJ |
3199 | Optional second argument FRAME controls which frames are affected. |
3200 | If optional argument FRAME is `visible', search all visible frames. | |
3201 | If FRAME is 0, search all visible and iconified frames. | |
3202 | If FRAME is nil, search all frames. | |
3203 | If FRAME is t, search only the selected frame. | |
d653c8cc | 3204 | If FRAME is a frame, search only that frame. |
fec89261 MR |
3205 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
3206 | its frame, that frame is deleted when there are other frames left. */) | |
5842a27b | 3207 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 3208 | { |
fec89261 MR |
3209 | Lisp_Object buffer; |
3210 | ||
26f6279d JB |
3211 | /* FRAME uses t and nil to mean the opposite of what window_loop |
3212 | expects. */ | |
c520265e RS |
3213 | if (NILP (frame)) |
3214 | frame = Qt; | |
3215 | else if (EQ (frame, Qt)) | |
3216 | frame = Qnil; | |
26f6279d | 3217 | |
fec89261 MR |
3218 | if (NILP (buffer_or_name)) |
3219 | buffer = Fcurrent_buffer (); | |
3220 | else | |
7ab12479 | 3221 | { |
fec89261 | 3222 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3223 | CHECK_BUFFER (buffer); |
7ab12479 | 3224 | } |
177c0ea7 | 3225 | |
fec89261 MR |
3226 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
3227 | ||
7ab12479 JB |
3228 | return Qnil; |
3229 | } | |
3230 | ||
3231 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 3232 | Sreplace_buffer_in_windows, |
fec89261 MR |
3233 | 0, 1, "bReplace buffer in windows: ", |
3234 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
3235 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
3236 | defaults to the current buffer. | |
3237 | ||
3238 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
3239 | deleted. If that window is the only window on its frame, that frame is | |
3240 | deleted too when there are other frames left. If there are no other | |
3241 | frames left, some other buffer is displayed in that window. */) | |
5842a27b | 3242 | (Lisp_Object buffer_or_name) |
fec89261 MR |
3243 | { |
3244 | Lisp_Object buffer; | |
3245 | ||
3246 | if (NILP (buffer_or_name)) | |
3247 | buffer = Fcurrent_buffer (); | |
3248 | else | |
7ab12479 | 3249 | { |
fec89261 | 3250 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3251 | CHECK_BUFFER (buffer); |
7ab12479 | 3252 | } |
fec89261 MR |
3253 | |
3254 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
3255 | ||
7ab12479 JB |
3256 | return Qnil; |
3257 | } | |
ff58478b RS |
3258 | |
3259 | /* Replace BUFFER with some other buffer in all windows | |
3260 | of all frames, even those on other keyboards. */ | |
3261 | ||
3262 | void | |
971de7fb | 3263 | replace_buffer_in_all_windows (Lisp_Object buffer) |
ff58478b RS |
3264 | { |
3265 | Lisp_Object tail, frame; | |
3266 | ||
ff58478b RS |
3267 | /* A single call to window_loop won't do the job |
3268 | because it only considers frames on the current keyboard. | |
3269 | So loop manually over frames, and handle each one. */ | |
3270 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 3271 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 3272 | } |
7ab12479 JB |
3273 | \f |
3274 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea | 3275 | |
a481b3ea JB |
3276 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3277 | minimum allowable size. */ | |
5500c422 | 3278 | |
605be8af | 3279 | void |
971de7fb | 3280 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 3281 | { |
628df3bf | 3282 | /* For height, we have to see: |
54b8bcb5 RS |
3283 | how many windows the frame has at minimum (one or two), |
3284 | and whether it has a menu bar or other special stuff at the top. */ | |
3285 | int min_height | |
3286 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3287 | ? MIN_SAFE_WINDOW_HEIGHT | |
3288 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3289 | |
5500c422 GM |
3290 | if (FRAME_TOP_MARGIN (frame) > 0) |
3291 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3292 | |
3293 | if (*rows < min_height) | |
3294 | *rows = min_height; | |
3295 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3296 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3297 | } | |
3298 | ||
233a4a2c GM |
3299 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
3300 | check if W's width can be changed, otherwise check W's height. | |
3301 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
3302 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
3303 | either. */ | |
c1636aa6 | 3304 | |
233a4a2c | 3305 | static int |
971de7fb | 3306 | window_fixed_size_p (struct window *w, int width_p, int check_siblings_p) |
233a4a2c GM |
3307 | { |
3308 | int fixed_p; | |
3309 | struct window *c; | |
177c0ea7 | 3310 | |
233a4a2c GM |
3311 | if (!NILP (w->hchild)) |
3312 | { | |
3313 | c = XWINDOW (w->hchild); | |
177c0ea7 | 3314 | |
233a4a2c GM |
3315 | if (width_p) |
3316 | { | |
047aaeb9 | 3317 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
3318 | children are. */ |
3319 | while (c && window_fixed_size_p (c, width_p, 0)) | |
3320 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3321 | fixed_p = c == NULL; | |
3322 | } | |
3323 | else | |
3324 | { | |
047aaeb9 | 3325 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
3326 | children is. */ |
3327 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
3328 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3329 | fixed_p = c != NULL; | |
3330 | } | |
3331 | } | |
3332 | else if (!NILP (w->vchild)) | |
3333 | { | |
3334 | c = XWINDOW (w->vchild); | |
177c0ea7 | 3335 | |
233a4a2c GM |
3336 | if (width_p) |
3337 | { | |
047aaeb9 | 3338 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
3339 | children is. */ |
3340 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
3341 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3342 | fixed_p = c != NULL; | |
3343 | } | |
3344 | else | |
3345 | { | |
047aaeb9 | 3346 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
3347 | children are. */ |
3348 | while (c && window_fixed_size_p (c, width_p, 0)) | |
3349 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3350 | fixed_p = c == NULL; | |
3351 | } | |
3352 | } | |
3353 | else if (BUFFERP (w->buffer)) | |
3354 | { | |
3df0580e AS |
3355 | struct buffer *old = current_buffer; |
3356 | Lisp_Object val; | |
177c0ea7 | 3357 | |
3df0580e AS |
3358 | current_buffer = XBUFFER (w->buffer); |
3359 | val = find_symbol_value (Qwindow_size_fixed); | |
3360 | current_buffer = old; | |
a34dfd12 | 3361 | |
3df0580e AS |
3362 | fixed_p = 0; |
3363 | if (!EQ (val, Qunbound)) | |
3364 | { | |
3365 | fixed_p = !NILP (val); | |
177c0ea7 | 3366 | |
3df0580e AS |
3367 | if (fixed_p |
3368 | && ((EQ (val, Qheight) && width_p) | |
3369 | || (EQ (val, Qwidth) && !width_p))) | |
3370 | fixed_p = 0; | |
233a4a2c GM |
3371 | } |
3372 | ||
3373 | /* Can't tell if this one is resizable without looking at | |
3374 | siblings. If all siblings are fixed-size this one is too. */ | |
3375 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
3376 | { | |
3377 | Lisp_Object child; | |
177c0ea7 | 3378 | |
9beb8baa | 3379 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
3380 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
3381 | break; | |
3382 | ||
3383 | if (NILP (child)) | |
9beb8baa | 3384 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
3385 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
3386 | break; | |
3387 | ||
3388 | if (NILP (child)) | |
3389 | fixed_p = 1; | |
3390 | } | |
3391 | } | |
3392 | else | |
3393 | fixed_p = 1; | |
3394 | ||
3395 | return fixed_p; | |
3396 | } | |
177c0ea7 | 3397 | |
047aaeb9 MR |
3398 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
3399 | the minimum width of W, WIDTH_P zero means return the minimum height | |
3400 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
3401 | return values that won't crash Emacs and don't hide components like | |
3402 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
3403 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
3404 | |
3405 | static int | |
971de7fb | 3406 | window_min_size_2 (struct window *w, int width_p, int safe_p) |
f1de8c77 | 3407 | { |
047aaeb9 MR |
3408 | /* We should consider buffer-local values of window_min_height and |
3409 | window_min_width here. */ | |
f1de8c77 | 3410 | if (width_p) |
047aaeb9 MR |
3411 | { |
3412 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 3413 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
3414 | + WINDOW_SCROLL_BAR_COLS (w)); |
3415 | ||
3416 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
3417 | } | |
f1de8c77 | 3418 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 3419 | return 1; |
f1de8c77 | 3420 | else |
047aaeb9 MR |
3421 | { |
3422 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
3423 | + ((BUFFERP (w->buffer) | |
4b4deea2 | 3424 | && !NILP (BVAR (XBUFFER (w->buffer), mode_line_format))) |
047aaeb9 | 3425 | ? 1 : 0)); |
f1de8c77 | 3426 | |
047aaeb9 MR |
3427 | return safe_p ? safe_size : max (window_min_height, safe_size); |
3428 | } | |
f1de8c77 | 3429 | } |
233a4a2c | 3430 | |
047aaeb9 MR |
3431 | /* Return minimum size of window W, not taking fixed-width windows into |
3432 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
3433 | return the minimum height. SAFE_P non-zero means ignore | |
3434 | window-min-height|width but just return values that won't crash Emacs | |
3435 | and don't hide components like fringes, scrollbars, or modelines. If | |
3436 | W is a combination window, compute the minimum size from the minimum | |
3437 | sizes of W's children. */ | |
233a4a2c GM |
3438 | |
3439 | static int | |
971de7fb | 3440 | window_min_size_1 (struct window *w, int width_p, int safe_p) |
c1636aa6 | 3441 | { |
233a4a2c | 3442 | struct window *c; |
c1636aa6 | 3443 | int size; |
177c0ea7 | 3444 | |
233a4a2c GM |
3445 | if (!NILP (w->hchild)) |
3446 | { | |
047aaeb9 | 3447 | /* W is a horizontal combination. */ |
233a4a2c GM |
3448 | c = XWINDOW (w->hchild); |
3449 | size = 0; | |
177c0ea7 | 3450 | |
233a4a2c GM |
3451 | if (width_p) |
3452 | { | |
047aaeb9 MR |
3453 | /* The minimum width of a horizontal combination is the sum of |
3454 | the minimum widths of its children. */ | |
233a4a2c GM |
3455 | while (c) |
3456 | { | |
047aaeb9 | 3457 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
3458 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3459 | } | |
3460 | } | |
3461 | else | |
3462 | { | |
047aaeb9 MR |
3463 | /* The minimum height of a horizontal combination is the |
3464 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
3465 | while (c) |
3466 | { | |
047aaeb9 | 3467 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
3468 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3469 | } | |
3470 | } | |
3471 | } | |
3472 | else if (!NILP (w->vchild)) | |
3473 | { | |
047aaeb9 | 3474 | /* W is a vertical combination. */ |
233a4a2c GM |
3475 | c = XWINDOW (w->vchild); |
3476 | size = 0; | |
177c0ea7 | 3477 | |
233a4a2c GM |
3478 | if (width_p) |
3479 | { | |
047aaeb9 MR |
3480 | /* The minimum width of a vertical combination is the maximum |
3481 | of the minimum widths of its children. */ | |
233a4a2c GM |
3482 | while (c) |
3483 | { | |
047aaeb9 | 3484 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
3485 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3486 | } | |
3487 | } | |
3488 | else | |
3489 | { | |
047aaeb9 MR |
3490 | /* The minimum height of a vertical combination is the sum of |
3491 | the minimum height of its children. */ | |
233a4a2c GM |
3492 | while (c) |
3493 | { | |
047aaeb9 | 3494 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
3495 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3496 | } | |
3497 | } | |
3498 | } | |
c1636aa6 | 3499 | else |
047aaeb9 MR |
3500 | /* W is a leaf window. */ |
3501 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
3502 | |
3503 | return size; | |
3504 | } | |
3505 | ||
233a4a2c | 3506 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
3507 | account. WIDTH_P non-zero means return the minimum width, otherwise |
3508 | return the minimum height. SAFE_P non-zero means ignore | |
3509 | window-min-height|width but just return values that won't crash Emacs | |
3510 | and don't hide components like fringes, scrollbars, or modelines. | |
3511 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
3512 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 3513 | |
233a4a2c | 3514 | static int |
971de7fb | 3515 | window_min_size (struct window *w, int width_p, int safe_p, int ignore_fixed_p, int *fixed) |
233a4a2c GM |
3516 | { |
3517 | int size, fixed_p; | |
3518 | ||
f984d4fc GM |
3519 | if (ignore_fixed_p) |
3520 | fixed_p = 0; | |
3521 | else | |
3522 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 3523 | |
233a4a2c GM |
3524 | if (fixed) |
3525 | *fixed = fixed_p; | |
177c0ea7 | 3526 | |
233a4a2c | 3527 | if (fixed_p) |
047aaeb9 | 3528 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 3529 | else |
047aaeb9 | 3530 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 3531 | |
233a4a2c GM |
3532 | return size; |
3533 | } | |
3534 | ||
3535 | ||
79fd290e | 3536 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3537 | Return 1 if window width is ok after adjustment; 0 if window |
3538 | is still too narrow. */ | |
3539 | ||
3540 | static int | |
971de7fb | 3541 | adjust_window_margins (struct window *w) |
949cf20f KS |
3542 | { |
3543 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3544 | - WINDOW_FRINGE_COLS (w) | |
3545 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3546 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3547 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3548 | ||
3549 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3550 | return 1; | |
3551 | ||
3552 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3553 | return 0; | |
3554 | ||
3555 | /* Window's text area is too narrow, but reducing the window | |
3556 | margins will fix that. */ | |
3557 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3558 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3559 | { | |
3560 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
3561 | w->left_margin_cols = w->right_margin_cols | |
3562 | = make_number (margin_cols/2); | |
3563 | else | |
3564 | w->right_margin_cols = make_number (margin_cols); | |
3565 | } | |
3566 | else | |
3567 | w->left_margin_cols = make_number (margin_cols); | |
3568 | return 1; | |
3569 | } | |
3570 | ||
047aaeb9 MR |
3571 | /* Calculate new sizes for windows in the list FORWARD when their |
3572 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
3573 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
3574 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
3575 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
3576 | shrink columns, otherwise shrink lines. | |
6b61353c | 3577 | |
047aaeb9 MR |
3578 | SAFE_P zero means windows may be sized down to window-min-height |
3579 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
3580 | non-zero means windows may be sized down to their minimum safe sizes | |
3581 | taking into account the space needed to display modelines, fringes, | |
3582 | and scrollbars. | |
6b61353c | 3583 | |
047aaeb9 MR |
3584 | This function returns an allocated array of new sizes that the caller |
3585 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
3586 | zero. A size zero means the window shall be deleted. Array index 0 | |
3587 | refers to the first window in FORWARD, 1 to the second, and so on. | |
3588 | ||
3589 | This function resizes windows proportionally to their size. It also | |
3590 | tries to preserve smaller windows by resizing larger windows before | |
3591 | resizing any window to zero. If resize_proportionally is non-nil for | |
3592 | a specific window, it will attempt to strictly resize that window | |
3593 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 3594 | static int * |
ed3751c8 | 3595 | shrink_windows (int total, int size, int nchildren, int shrinkable, |
dd4c5104 | 3596 | int resize_fixed_p, Lisp_Object forward, int width_p, int safe_p) |
6b61353c KH |
3597 | { |
3598 | int available_resize = 0; | |
047aaeb9 | 3599 | int *new_sizes, *min_sizes; |
6b61353c KH |
3600 | struct window *c; |
3601 | Lisp_Object child; | |
3602 | int smallest = total; | |
3603 | int total_removed = 0; | |
3604 | int total_shrink = total - size; | |
3605 | int i; | |
3606 | ||
3607 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 3608 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
3609 | |
3610 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
3611 | { | |
3612 | int child_size; | |
3613 | ||
3614 | c = XWINDOW (child); | |
047aaeb9 | 3615 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 3616 | |
047aaeb9 | 3617 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
3618 | new_sizes[i] = -1; |
3619 | else | |
3620 | { | |
3621 | new_sizes[i] = child_size; | |
047aaeb9 MR |
3622 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
3623 | if (child_size > min_sizes[i] | |
3624 | && NILP (c->resize_proportionally)) | |
3625 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
3626 | } |
3627 | } | |
3628 | /* We might need to shrink some windows to zero. Find the smallest | |
3629 | windows and set them to 0 until we can fulfil the new size. */ | |
3630 | ||
3631 | while (shrinkable > 1 && size + available_resize < total) | |
3632 | { | |
3633 | for (i = 0; i < nchildren; ++i) | |
3634 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
3635 | smallest = new_sizes[i]; | |
3636 | ||
3637 | for (i = 0; i < nchildren; ++i) | |
3638 | if (new_sizes[i] == smallest) | |
3639 | { | |
3640 | /* Resize this window down to zero. */ | |
3641 | new_sizes[i] = 0; | |
047aaeb9 MR |
3642 | if (smallest > min_sizes[i]) |
3643 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
3644 | available_resize += smallest; |
3645 | --shrinkable; | |
3646 | total_removed += smallest; | |
3647 | ||
ef614e04 JD |
3648 | /* We don't know what the smallest is now. */ |
3649 | smallest = total; | |
3650 | ||
6b61353c KH |
3651 | /* Out of for, just remove one window at the time and |
3652 | check again if we have enough space. */ | |
3653 | break; | |
3654 | } | |
3655 | } | |
3656 | ||
3657 | /* Now, calculate the new sizes. Try to shrink each window | |
3658 | proportional to its size. */ | |
3659 | for (i = 0; i < nchildren; ++i) | |
3660 | { | |
047aaeb9 | 3661 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 3662 | { |
047aaeb9 MR |
3663 | int to_shrink = total_shrink * new_sizes[i] / total; |
3664 | ||
3665 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
3666 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
3667 | new_sizes[i] -= to_shrink; |
3668 | total_removed += to_shrink; | |
3669 | } | |
3670 | } | |
3671 | ||
3672 | /* Any reminder due to rounding, we just subtract from windows | |
3673 | that are left and still can be shrunk. */ | |
3674 | while (total_shrink > total_removed) | |
3675 | { | |
ef614e04 | 3676 | int nonzero_sizes = 0; |
ef614e04 JD |
3677 | |
3678 | for (i = 0; i < nchildren; ++i) | |
3679 | if (new_sizes[i] > 0) | |
c499e557 | 3680 | ++nonzero_sizes; |
c49a0495 | 3681 | |
6b61353c | 3682 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3683 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3684 | { |
3685 | --new_sizes[i]; | |
3686 | ++total_removed; | |
3687 | ||
3688 | /* Out of for, just shrink one window at the time and | |
3689 | check again if we have enough space. */ | |
3690 | break; | |
3691 | } | |
ef614e04 | 3692 | |
ef614e04 JD |
3693 | /* Special case, only one window left. */ |
3694 | if (nonzero_sizes == 1) | |
3695 | break; | |
3696 | } | |
3697 | ||
3698 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3699 | while (total_shrink < total_removed) | |
3700 | { | |
3701 | for (i = 0; i < nchildren; ++i) | |
3702 | { | |
3703 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3704 | { | |
3705 | ++new_sizes[i]; | |
3706 | --total_removed; | |
3707 | break; | |
3708 | } | |
3709 | } | |
6b61353c KH |
3710 | } |
3711 | ||
047aaeb9 MR |
3712 | xfree (min_sizes); |
3713 | ||
6b61353c KH |
3714 | return new_sizes; |
3715 | } | |
949cf20f | 3716 | |
233a4a2c | 3717 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3718 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3719 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3720 | |
3721 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3722 | they are in series. If LAST_ONLY is 1, change only the last of | |
3723 | WINDOW's children when they are in series. | |
3724 | ||
3725 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3726 | windows that become too small unless NODELETE_P is 1. When |
3727 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3728 | window-min-width when resizing windows but use safe defaults instead. | |
3729 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3730 | |
3731 | static void | |
971de7fb | 3732 | size_window (Lisp_Object window, int size, int width_p, int nodelete_p, int first_only, int last_only) |
7ab12479 | 3733 | { |
233a4a2c GM |
3734 | struct window *w = XWINDOW (window); |
3735 | struct window *c; | |
3736 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3737 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3738 | |
7ae2f10f | 3739 | size = max (0, size); |
177c0ea7 | 3740 | |
047aaeb9 MR |
3741 | /* Delete WINDOW if it's too small. */ |
3742 | if (nodelete_p != 1 && !NILP (w->parent) | |
3743 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3744 | { |
047aaeb9 MR |
3745 | delete_window (window); |
3746 | return; | |
7ab12479 JB |
3747 | } |
3748 | ||
233a4a2c | 3749 | /* Set redisplay hints. */ |
7ae2f10f GM |
3750 | w->last_modified = make_number (0); |
3751 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3752 | windows_or_buffers_changed++; |
7ae2f10f | 3753 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3754 | |
233a4a2c GM |
3755 | if (width_p) |
3756 | { | |
3757 | sideward = &w->vchild; | |
3758 | forward = &w->hchild; | |
949cf20f KS |
3759 | w->total_cols = make_number (size); |
3760 | adjust_window_margins (w); | |
233a4a2c GM |
3761 | } |
3762 | else | |
3763 | { | |
3764 | sideward = &w->hchild; | |
3765 | forward = &w->vchild; | |
949cf20f KS |
3766 | w->total_lines = make_number (size); |
3767 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3768 | } |
3769 | ||
3770 | if (!NILP (*sideward)) | |
7ab12479 | 3771 | { |
5fe0b054 | 3772 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3773 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3774 | { |
233a4a2c GM |
3775 | c = XWINDOW (child); |
3776 | if (width_p) | |
949cf20f | 3777 | c->left_col = w->left_col; |
233a4a2c | 3778 | else |
949cf20f | 3779 | c->top_line = w->top_line; |
5fe0b054 RS |
3780 | size_window (child, size, width_p, nodelete_p, |
3781 | first_only, last_only); | |
7ab12479 JB |
3782 | } |
3783 | } | |
5fe0b054 RS |
3784 | else if (!NILP (*forward) && last_only) |
3785 | { | |
3786 | /* Change the last in a series of siblings. */ | |
3787 | Lisp_Object last_child; | |
3788 | int child_size; | |
3789 | ||
78eb494e PE |
3790 | child = *forward; |
3791 | do | |
5fe0b054 RS |
3792 | { |
3793 | c = XWINDOW (child); | |
3794 | last_child = child; | |
78eb494e | 3795 | child = c->next; |
5fe0b054 | 3796 | } |
78eb494e | 3797 | while (!NILP (child)); |
5fe0b054 | 3798 | |
047aaeb9 MR |
3799 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3800 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3801 | width_p, nodelete_p, first_only, last_only); |
3802 | } | |
3803 | else if (!NILP (*forward) && first_only) | |
3804 | { | |
3805 | /* Change the first in a series of siblings. */ | |
3806 | int child_size; | |
3807 | ||
3808 | child = *forward; | |
3809 | c = XWINDOW (child); | |
3810 | ||
3811 | if (width_p) | |
3812 | c->left_col = w->left_col; | |
3813 | else | |
3814 | c->top_line = w->top_line; | |
3815 | ||
047aaeb9 MR |
3816 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3817 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3818 | width_p, nodelete_p, first_only, last_only); |
3819 | } | |
233a4a2c | 3820 | else if (!NILP (*forward)) |
7ab12479 | 3821 | { |
d6550a9f | 3822 | int fixed_size, each IF_LINT (= 0), extra IF_LINT (= 0), n; |
233a4a2c | 3823 | int resize_fixed_p, nfixed; |
8b6d9dc9 | 3824 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3825 | int *new_sizes = NULL; |
233a4a2c | 3826 | |
5fe0b054 | 3827 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3828 | number of child windows. */ |
8b6d9dc9 | 3829 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3830 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3831 | { |
8b6d9dc9 | 3832 | int child_size; |
177c0ea7 | 3833 | |
7ab12479 | 3834 | c = XWINDOW (child); |
047aaeb9 | 3835 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3836 | total += child_size; |
177c0ea7 | 3837 | |
233a4a2c GM |
3838 | if (window_fixed_size_p (c, width_p, 0)) |
3839 | { | |
8b6d9dc9 | 3840 | fixed_size += child_size; |
233a4a2c GM |
3841 | ++nfixed; |
3842 | } | |
3843 | } | |
7ab12479 | 3844 | |
233a4a2c GM |
3845 | /* If the new size is smaller than fixed_size, or if there |
3846 | aren't any resizable windows, allow resizing fixed-size | |
3847 | windows. */ | |
3848 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3849 | ||
6b61353c | 3850 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3851 | value of extra takes care of rounding errors. */ |
3852 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3853 | if (size < total && n > 1) |
047aaeb9 MR |
3854 | new_sizes = shrink_windows (total, size, nchildren, n, |
3855 | resize_fixed_p, *forward, width_p, | |
3856 | nodelete_p == 2); | |
6b61353c KH |
3857 | else |
3858 | { | |
3859 | each = (size - total) / n; | |
3860 | extra = (size - total) - n * each; | |
3861 | } | |
233a4a2c GM |
3862 | |
3863 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3864 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3865 | last_pos = first_pos; |
6b61353c | 3866 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c | 3867 | { |
4554d213 | 3868 | int new_child_size, old_child_size; |
177c0ea7 | 3869 | |
233a4a2c | 3870 | c = XWINDOW (child); |
4554d213 PE |
3871 | old_child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3872 | new_child_size = old_child_size; | |
7ab12479 | 3873 | |
233a4a2c GM |
3874 | /* The top or left edge position of this child equals the |
3875 | bottom or right edge of its predecessor. */ | |
3876 | if (width_p) | |
949cf20f | 3877 | c->left_col = make_number (last_pos); |
233a4a2c | 3878 | else |
949cf20f | 3879 | c->top_line = make_number (last_pos); |
7ab12479 | 3880 | |
233a4a2c GM |
3881 | /* If this child can be resized, do it. */ |
3882 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3883 | { | |
4554d213 PE |
3884 | new_child_size = |
3885 | new_sizes ? new_sizes[n] : old_child_size + each + extra; | |
233a4a2c GM |
3886 | extra = 0; |
3887 | } | |
177c0ea7 | 3888 | |
047aaeb9 | 3889 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3890 | edge positions to children, so it's not a no-op if we |
3891 | didn't change the child's size. */ | |
4554d213 PE |
3892 | size_window (child, new_child_size, width_p, 1, |
3893 | first_only, last_only); | |
233a4a2c GM |
3894 | |
3895 | /* Remember the bottom/right edge position of this child; it | |
3896 | will be used to set the top/left edge of the next child. */ | |
4554d213 | 3897 | last_pos += new_child_size; |
7ab12479 | 3898 | } |
233a4a2c | 3899 | |
70fdbb46 | 3900 | xfree (new_sizes); |
6b61353c | 3901 | |
233a4a2c GM |
3902 | /* We should have covered the parent exactly with child windows. */ |
3903 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3904 | |
7ab12479 | 3905 | /* Now delete any children that became too small. */ |
047aaeb9 | 3906 | if (nodelete_p != 1) |
233a4a2c | 3907 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3908 | { |
233a4a2c | 3909 | int child_size; |
047aaeb9 | 3910 | |
233a4a2c | 3911 | c = XWINDOW (child); |
047aaeb9 MR |
3912 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3913 | size_window (child, child_size, width_p, nodelete_p, | |
3914 | first_only, last_only); | |
7ab12479 JB |
3915 | } |
3916 | } | |
3917 | } | |
3918 | ||
233a4a2c | 3919 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3920 | WINDOW's children. NODELETE zero means windows that have become |
3921 | smaller than window-min-height in the process may be deleted. | |
3922 | NODELETE 1 means never delete windows that become too small in the | |
3923 | process. (The caller should check later and do so if appropriate.) | |
3924 | NODELETE 2 means delete only windows that have become too small to be | |
3925 | displayed correctly. */ | |
7ab12479 | 3926 | |
5e14b1fc | 3927 | void |
971de7fb | 3928 | set_window_height (Lisp_Object window, int height, int nodelete) |
7ab12479 | 3929 | { |
5fe0b054 | 3930 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3931 | } |
7ab12479 | 3932 | |
233a4a2c | 3933 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3934 | WINDOW's children. NODELETE zero means windows that have become |
3935 | smaller than window-min-width in the process may be deleted. | |
3936 | NODELETE 1 means never delete windows that become too small in the | |
3937 | process. (The caller should check later and do so if appropriate.) | |
3938 | NODELETE 2 means delete only windows that have become too small to be | |
3939 | displayed correctly. */ | |
7ab12479 | 3940 | |
233a4a2c | 3941 | void |
971de7fb | 3942 | set_window_width (Lisp_Object window, int width, int nodelete) |
233a4a2c | 3943 | { |
5fe0b054 | 3944 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3945 | } |
233a4a2c | 3946 | |
cdbc7fec KS |
3947 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3948 | ||
3949 | void | |
971de7fb | 3950 | change_window_heights (Lisp_Object window, int n) |
cdbc7fec KS |
3951 | { |
3952 | struct window *w = XWINDOW (window); | |
3953 | ||
949cf20f KS |
3954 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3955 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3956 | |
949cf20f KS |
3957 | if (INTEGERP (w->orig_top_line)) |
3958 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3959 | if (INTEGERP (w->orig_total_lines)) | |
3960 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3961 | |
3962 | /* Handle just the top child in a vertical split. */ | |
3963 | if (!NILP (w->vchild)) | |
3964 | change_window_heights (w->vchild, n); | |
3965 | ||
3966 | /* Adjust all children in a horizontal split. */ | |
3967 | for (window = w->hchild; !NILP (window); window = w->next) | |
3968 | { | |
3969 | w = XWINDOW (window); | |
3970 | change_window_heights (window, n); | |
3971 | } | |
3972 | } | |
3973 | ||
7ab12479 | 3974 | \f |
1d8d96fa | 3975 | int window_select_count; |
7ab12479 | 3976 | |
cd64ea1d PE |
3977 | static Lisp_Object Fset_window_margins (Lisp_Object, Lisp_Object, Lisp_Object); |
3978 | static Lisp_Object Fset_window_fringes (Lisp_Object, Lisp_Object, Lisp_Object, | |
3979 | Lisp_Object); | |
3980 | static Lisp_Object Fset_window_scroll_bars (Lisp_Object, Lisp_Object, | |
3981 | Lisp_Object, Lisp_Object); | |
3982 | static Lisp_Object Fset_window_vscroll (Lisp_Object, Lisp_Object, Lisp_Object); | |
7ab12479 | 3983 | |
6a44ffb3 SM |
3984 | static void |
3985 | run_funs (Lisp_Object funs) | |
3986 | { | |
3987 | for (; CONSP (funs); funs = XCDR (funs)) | |
3988 | if (!EQ (XCAR (funs), Qt)) | |
3989 | call0 (XCAR (funs)); | |
3990 | } | |
3991 | ||
3992 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3993 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3994 | |
ef264c42 SM |
3995 | void |
3996 | run_window_configuration_change_hook (struct frame *f) | |
3997 | { | |
fec89261 | 3998 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3999 | Lisp_Object frame, global_wcch |
4000 | = Fdefault_value (Qwindow_configuration_change_hook); | |
4001 | XSETFRAME (frame, f); | |
4002 | ||
4003 | if (NILP (Vrun_hooks)) | |
4004 | return; | |
4005 | ||
6a44ffb3 SM |
4006 | /* Use the right buffer. Matters when running the local hooks. */ |
4007 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
4008 | { | |
4009 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4010 | Fset_buffer (Fwindow_buffer (Qnil)); | |
4011 | } | |
4012 | ||
1a13852e MR |
4013 | if (SELECTED_FRAME () != f) |
4014 | { | |
4015 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
4016 | select_frame_norecord (frame); | |
4017 | } | |
4018 | ||
6a44ffb3 SM |
4019 | /* Look for buffer-local values. */ |
4020 | { | |
4021 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
4022 | for (; CONSP (windows); windows = XCDR (windows)) | |
4023 | { | |
4024 | Lisp_Object window = XCAR (windows); | |
4025 | Lisp_Object buffer = Fwindow_buffer (window); | |
4026 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
4027 | buffer))) | |
4028 | { | |
1a13852e | 4029 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
4030 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
4031 | select_window_norecord (window); | |
4032 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
4033 | buffer)); | |
1a13852e | 4034 | unbind_to (count, Qnil); |
fec89261 | 4035 | } |
6a44ffb3 SM |
4036 | } |
4037 | } | |
047aaeb9 | 4038 | |
6a44ffb3 SM |
4039 | run_funs (global_wcch); |
4040 | unbind_to (count, Qnil); | |
ef264c42 SM |
4041 | } |
4042 | ||
1a13852e MR |
4043 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
4044 | Srun_window_configuration_change_hook, 1, 1, 0, | |
4045 | doc: /* Run `window-configuration-change-hook' for FRAME. */) | |
4046 | (Lisp_Object frame) | |
4047 | { | |
4048 | CHECK_LIVE_FRAME (frame); | |
4049 | run_window_configuration_change_hook (XFRAME (frame)); | |
4050 | return Qnil; | |
4051 | } | |
4052 | ||
5500c422 GM |
4053 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
4054 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
4055 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
4056 | margins, fringes, and scroll-bar settings of the window are not | |
4057 | reset from the buffer's local settings. */ | |
7ab12479 | 4058 | |
5500c422 | 4059 | void |
971de7fb | 4060 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
4061 | { |
4062 | struct window *w = XWINDOW (window); | |
4063 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 4064 | int count = SPECPDL_INDEX (); |
c3b232e4 | 4065 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
4066 | |
4067 | w->buffer = buffer; | |
86e48436 RS |
4068 | |
4069 | if (EQ (window, selected_window)) | |
4b4deea2 | 4070 | BVAR (b, last_selected_window) = window; |
beb4e312 | 4071 | |
c49a0495 KS |
4072 | /* Let redisplay errors through. */ |
4073 | b->display_error_modiff = 0; | |
4074 | ||
beb4e312 | 4075 | /* Update time stamps of buffer display. */ |
4b4deea2 TT |
4076 | if (INTEGERP (BVAR (b, display_count))) |
4077 | XSETINT (BVAR (b, display_count), XINT (BVAR (b, display_count)) + 1); | |
4078 | BVAR (b, display_time) = Fcurrent_time (); | |
86e48436 | 4079 | |
d834a2e9 | 4080 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 4081 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 4082 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 4083 | w->window_end_valid = Qnil; |
c3b232e4 | 4084 | if (!(keep_margins_p && samebuf)) |
23fe745a | 4085 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
4086 | vscroll. This case happens for example when called from |
4087 | change_frame_size_1, where we use a dummy call to | |
4088 | Fset_window_buffer on the frame's selected window (and no other) | |
4089 | just in order to run window-configuration-change-hook. | |
4090 | Resetting hscroll and vscroll here is problematic for things like | |
4091 | image-mode and doc-view-mode since it resets the image's position | |
4092 | whenever we resize the frame. */ | |
4093 | w->hscroll = w->min_hscroll = make_number (0); | |
4094 | w->vscroll = 0; | |
4095 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
4096 | set_marker_restricted (w->start, | |
4097 | make_number (b->last_window_start), | |
4098 | buffer); | |
4099 | w->start_at_line_beg = Qnil; | |
4100 | w->force_start = Qnil; | |
4101 | XSETFASTINT (w->last_modified, 0); | |
4102 | XSETFASTINT (w->last_overlay_modified, 0); | |
4103 | } | |
4104 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
4105 | I doubt it's worth the trouble. */ | |
7ab12479 | 4106 | windows_or_buffers_changed++; |
5b03d3c0 | 4107 | |
da39107c | 4108 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
4109 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
4110 | because that might itself be a local variable. */ | |
da39107c | 4111 | if (window_initialized) |
5b03d3c0 | 4112 | { |
da39107c | 4113 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
4114 | Fset_buffer (buffer); |
4115 | } | |
4116 | ||
a1562258 SM |
4117 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
4118 | ||
949cf20f KS |
4119 | if (!keep_margins_p) |
4120 | { | |
4121 | /* Set left and right marginal area width etc. from buffer. */ | |
4122 | ||
79fd290e | 4123 | /* This may call adjust_window_margins three times, so |
949cf20f | 4124 | temporarily disable window margins. */ |
6b61353c KH |
4125 | Lisp_Object save_left = w->left_margin_cols; |
4126 | Lisp_Object save_right = w->right_margin_cols; | |
4127 | ||
949cf20f KS |
4128 | w->left_margin_cols = w->right_margin_cols = Qnil; |
4129 | ||
4130 | Fset_window_fringes (window, | |
4b4deea2 TT |
4131 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
4132 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
4133 | |
4134 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
4135 | BVAR (b, scroll_bar_width), |
4136 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 4137 | |
6b61353c KH |
4138 | w->left_margin_cols = save_left; |
4139 | w->right_margin_cols = save_right; | |
4140 | ||
949cf20f | 4141 | Fset_window_margins (window, |
4b4deea2 | 4142 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 4143 | } |
7ab12479 | 4144 | |
5500c422 GM |
4145 | if (run_hooks_p) |
4146 | { | |
4147 | if (! NILP (Vwindow_scroll_functions)) | |
4148 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
4149 | Fmarker_position (w->start)); | |
ef264c42 | 4150 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 4151 | } |
543f5fb1 | 4152 | |
5b03d3c0 | 4153 | unbind_to (count, Qnil); |
5500c422 | 4154 | } |
5b03d3c0 | 4155 | |
496e208e MR |
4156 | DEFUN ("set-window-clone-number", Fset_window_clone_number, Sset_window_clone_number, 2, 2, 0, |
4157 | doc: /* Set WINDOW's clone number to CLONE-NUMBER. | |
4158 | WINDOW can be any window and defaults to the selected one. */) | |
4159 | (Lisp_Object window, Lisp_Object clone_number) | |
4160 | { | |
4161 | register struct window *w = decode_any_window (window); | |
4162 | ||
4163 | CHECK_NUMBER (clone_number); | |
4164 | w->clone_number = clone_number; | |
4165 | return w->clone_number; | |
4166 | } | |
5500c422 | 4167 | |
a7ca3326 | 4168 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
4169 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
4170 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
4171 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
4172 | non-nil means that WINDOW's current display margins, fringe widths, and | |
4173 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 4174 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 4175 | |
7bfac547 MR |
4176 | This function throws an error when WINDOW is strongly dedicated to its |
4177 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
4178 | already display BUFFER-OR-NAME. | |
6cb4a892 | 4179 | |
8fef9de1 MR |
4180 | This function runs `window-scroll-functions' before running |
4181 | `window-configuration-change-hook'. */) | |
5842a27b | 4182 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 4183 | { |
d653c8cc | 4184 | register Lisp_Object tem, buffer; |
5500c422 | 4185 | register struct window *w = decode_window (window); |
5500c422 | 4186 | |
bed0c171 | 4187 | XSETWINDOW (window, w); |
d653c8cc | 4188 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 4189 | CHECK_BUFFER (buffer); |
4b4deea2 | 4190 | if (NILP (BVAR (XBUFFER (buffer), name))) |
5500c422 GM |
4191 | error ("Attempt to display deleted buffer"); |
4192 | ||
4193 | tem = w->buffer; | |
aac0c6e3 MR |
4194 | if (NILP (tem)) |
4195 | error ("Window is deleted"); | |
4196 | else if (!EQ (tem, Qt)) | |
d653c8cc | 4197 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 4198 | { |
ef1b0ba7 SM |
4199 | if (EQ (tem, buffer)) |
4200 | return Qnil; | |
4201 | else if (EQ (w->dedicated, Qt)) | |
4b4deea2 | 4202 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); |
ef1b0ba7 SM |
4203 | else |
4204 | w->dedicated = Qnil; | |
5500c422 GM |
4205 | |
4206 | unshow_buffer (w); | |
4207 | } | |
4208 | ||
949cf20f | 4209 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
4210 | return Qnil; |
4211 | } | |
4212 | ||
14d87dc9 | 4213 | static Lisp_Object |
971de7fb | 4214 | select_window_norecord (Lisp_Object window) |
14d87dc9 | 4215 | { |
ab6d1131 MR |
4216 | return WINDOW_LIVE_P (window) |
4217 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 4218 | } |
c6932ecd MR |
4219 | |
4220 | static Lisp_Object | |
971de7fb | 4221 | select_frame_norecord (Lisp_Object frame) |
c6932ecd MR |
4222 | { |
4223 | return FRAME_LIVE_P (XFRAME (frame)) | |
4224 | ? Fselect_frame (frame, Qt) : selected_frame; | |
4225 | } | |
b7354ddf | 4226 | \f |
7e5cf297 | 4227 | static Lisp_Object |
971de7fb | 4228 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 4229 | { |
87478b52 | 4230 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
4231 | } |
4232 | ||
6b61353c KH |
4233 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
4234 | 0, 1, 0, | |
5a1048a5 | 4235 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 4236 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 4237 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 4238 | displaying that buffer. */) |
5842a27b | 4239 | (Lisp_Object object) |
6b61353c KH |
4240 | { |
4241 | if (NILP (object)) | |
4242 | { | |
4243 | windows_or_buffers_changed++; | |
4244 | update_mode_lines++; | |
4245 | return Qt; | |
4246 | } | |
4247 | ||
4248 | if (WINDOWP (object)) | |
4249 | { | |
4250 | struct window *w = XWINDOW (object); | |
4251 | mark_window_display_accurate (object, 0); | |
4252 | w->update_mode_line = Qt; | |
4253 | if (BUFFERP (w->buffer)) | |
4254 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4255 | ++update_mode_lines; | |
4256 | return Qt; | |
4257 | } | |
0cc1039f | 4258 | |
6b61353c KH |
4259 | if (STRINGP (object)) |
4260 | object = Fget_buffer (object); | |
4b4deea2 | 4261 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
6b61353c KH |
4262 | { |
4263 | /* Walk all windows looking for buffer, and force update | |
4264 | of each of those windows. */ | |
4265 | ||
4266 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
4267 | return NILP (object) ? Qnil : Qt; | |
4268 | } | |
4269 | ||
4270 | /* If nothing suitable was found, just return. | |
4271 | We could signal an error, but this feature will typically be used | |
4272 | asynchronously in timers or process sentinels, so we don't. */ | |
4273 | return Qnil; | |
4274 | } | |
4275 | ||
4276 | ||
7ab12479 | 4277 | void |
971de7fb | 4278 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
4279 | { |
4280 | register struct buffer *old = current_buffer; | |
4281 | register Lisp_Object window; | |
4282 | register struct window *w; | |
4283 | ||
4b4deea2 | 4284 | BVAR (XBUFFER (buf), directory) = BVAR (current_buffer, directory); |
bccd3dd1 | 4285 | |
7ab12479 | 4286 | Fset_buffer (buf); |
c6367666 | 4287 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
4288 | BEGV = BEG; |
4289 | ZV = Z; | |
4290 | SET_PT (BEG); | |
7ab12479 JB |
4291 | set_buffer_internal (old); |
4292 | ||
e67a1dea | 4293 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
4294 | call1 (Vtemp_buffer_show_function, buf); |
4295 | else | |
4296 | { | |
87478b52 | 4297 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 4298 | |
1ae1a37d | 4299 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 4300 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
4301 | Vminibuf_scroll_window = window; |
4302 | w = XWINDOW (window); | |
d834a2e9 | 4303 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 4304 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
4305 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
4306 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 4307 | |
beb4e312 | 4308 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 4309 | and its buffer current. */ |
dee091a3 JD |
4310 | { |
4311 | int count = SPECPDL_INDEX (); | |
4312 | Lisp_Object prev_window, prev_buffer; | |
4313 | prev_window = selected_window; | |
4314 | XSETBUFFER (prev_buffer, old); | |
4315 | ||
4316 | /* Select the window that was chosen, for running the hook. | |
4317 | Note: Both Fselect_window and select_window_norecord may | |
4318 | set-buffer to the buffer displayed in the window, | |
4319 | so we need to save the current buffer. --stef */ | |
4320 | record_unwind_protect (Fset_buffer, prev_buffer); | |
4321 | record_unwind_protect (select_window_norecord, prev_window); | |
4322 | Fselect_window (window, Qt); | |
4323 | Fset_buffer (w->buffer); | |
4324 | Frun_hooks (1, &Qtemp_buffer_show_hook); | |
4325 | unbind_to (count, Qnil); | |
4326 | } | |
2cccc823 | 4327 | } |
7ab12479 | 4328 | } |
3e21b6a7 SM |
4329 | |
4330 | DEFUN ("internal-temp-output-buffer-show", | |
4331 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
4332 | 1, 1, 0, | |
4333 | doc: /* Internal function for `with-output-to-temp-buffer''. */) | |
4334 | (Lisp_Object buf) | |
4335 | { | |
4336 | temp_output_buffer_show (buf); | |
4337 | return Qnil; | |
4338 | } | |
7ab12479 | 4339 | \f |
dfcf069d | 4340 | static void |
971de7fb | 4341 | make_dummy_parent (Lisp_Object window) |
7ab12479 | 4342 | { |
cffec418 | 4343 | Lisp_Object new; |
7ab12479 | 4344 | register struct window *o, *p; |
cffec418 | 4345 | int i; |
7ab12479 | 4346 | |
cffec418 | 4347 | o = XWINDOW (window); |
26605be9 | 4348 | p = allocate_window (); |
cffec418 | 4349 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
4350 | ((struct Lisp_Vector *) p)->contents[i] |
4351 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 4352 | XSETWINDOW (new, p); |
7ab12479 | 4353 | |
2a1893f4 SM |
4354 | ++sequence_number; |
4355 | XSETFASTINT (p->sequence_number, sequence_number); | |
496e208e | 4356 | XSETFASTINT (p->clone_number, sequence_number); |
7ab12479 JB |
4357 | |
4358 | /* Put new into window structure in place of window */ | |
1a13852e | 4359 | replace_window (window, new, 1); |
7ab12479 JB |
4360 | |
4361 | o->next = Qnil; | |
4362 | o->prev = Qnil; | |
4363 | o->vchild = Qnil; | |
4364 | o->hchild = Qnil; | |
4365 | o->parent = new; | |
4366 | ||
4367 | p->start = Qnil; | |
4368 | p->pointm = Qnil; | |
4369 | p->buffer = Qnil; | |
496e208e MR |
4370 | |
4371 | p->splits = Qnil; | |
4372 | p->nest = Qnil; | |
4373 | p->window_parameters = Qnil; | |
4374 | ||
4375 | } | |
4376 | ||
1a13852e MR |
4377 | /* Make new window, have it replace WINDOW in window-tree, and make |
4378 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
4379 | horizontal child). */ | |
4380 | static void | |
4381 | make_parent_window (Lisp_Object window, int horflag) | |
4382 | { | |
4383 | Lisp_Object parent; | |
4384 | register struct window *o, *p; | |
4385 | int i; | |
4386 | ||
4387 | o = XWINDOW (window); | |
4388 | p = allocate_window (); | |
4389 | for (i = 0; i < VECSIZE (struct window); ++i) | |
4390 | ((struct Lisp_Vector *) p)->contents[i] | |
4391 | = ((struct Lisp_Vector *) o)->contents[i]; | |
4392 | XSETWINDOW (parent, p); | |
4393 | ||
4394 | ++sequence_number; | |
4395 | XSETFASTINT (p->sequence_number, sequence_number); | |
4396 | XSETFASTINT (p->clone_number, sequence_number); | |
4397 | ||
4398 | replace_window (window, parent, 1); | |
4399 | ||
4400 | o->next = Qnil; | |
4401 | o->prev = Qnil; | |
4402 | o->parent = parent; | |
4403 | ||
4404 | p->hchild = horflag ? window : Qnil; | |
4405 | p->vchild = horflag ? Qnil : window; | |
4406 | p->start = Qnil; | |
4407 | p->pointm = Qnil; | |
4408 | p->buffer = Qnil; | |
4409 | p->splits = Qnil; | |
4410 | p->nest = Qnil; | |
4411 | p->window_parameters = Qnil; | |
4412 | } | |
4413 | ||
496e208e MR |
4414 | /* Make new window from scratch. */ |
4415 | Lisp_Object | |
4416 | make_window (void) | |
4417 | { | |
4418 | Lisp_Object window; | |
4419 | register struct window *w; | |
4420 | ||
4421 | w = allocate_window (); | |
4422 | /* Initialize all Lisp data. */ | |
4423 | w->frame = w->mini_p = Qnil; | |
4424 | w->next = w->prev = w->hchild = w->vchild = w->parent = Qnil; | |
4425 | XSETFASTINT (w->left_col, 0); | |
4426 | XSETFASTINT (w->top_line, 0); | |
4427 | XSETFASTINT (w->total_lines, 0); | |
4428 | XSETFASTINT (w->total_cols, 0); | |
4429 | w->normal_lines = make_float (1.0); | |
4430 | w->normal_cols = make_float (1.0); | |
4431 | XSETFASTINT (w->new_total, 0); | |
4432 | XSETFASTINT (w->new_normal, 0); | |
4433 | w->buffer = Qnil; | |
4434 | w->start = Fmake_marker (); | |
4435 | w->pointm = Fmake_marker (); | |
4436 | w->force_start = w->optional_new_start = Qnil; | |
4437 | XSETFASTINT (w->hscroll, 0); | |
4438 | XSETFASTINT (w->min_hscroll, 0); | |
4439 | XSETFASTINT (w->use_time, 0); | |
4440 | ++sequence_number; | |
4441 | XSETFASTINT (w->sequence_number, sequence_number); | |
4442 | XSETFASTINT (w->clone_number, sequence_number); | |
4443 | w->temslot = w->last_modified = w->last_overlay_modified = Qnil; | |
4444 | XSETFASTINT (w->last_point, 0); | |
4445 | w->last_had_star = w->vertical_scroll_bar = Qnil; | |
4446 | w->left_margin_cols = w->right_margin_cols = Qnil; | |
4447 | w->left_fringe_width = w->right_fringe_width = Qnil; | |
4448 | w->fringes_outside_margins = Qnil; | |
4449 | w->scroll_bar_width = Qnil; | |
4450 | w->vertical_scroll_bar_type = Qt; | |
4451 | w->last_mark_x = w->last_mark_y = Qnil; | |
4452 | XSETFASTINT (w->window_end_pos, 0); | |
4453 | XSETFASTINT (w->window_end_vpos, 0); | |
4454 | w->window_end_valid = w->update_mode_line = Qnil; | |
4455 | w->start_at_line_beg = w->display_table = w->dedicated = Qnil; | |
4456 | w->base_line_number = w->base_line_pos = w->region_showing = Qnil; | |
4457 | w->column_number_displayed = w->redisplay_end_trigger = Qnil; | |
4458 | w->splits = w->nest = w->window_parameters = Qnil; | |
4459 | w->prev_buffers = w->next_buffers = Qnil; | |
4460 | /* Initialize non-Lisp data. */ | |
4461 | w->desired_matrix = w->current_matrix = 0; | |
4462 | w->nrows_scale_factor = w->ncols_scale_factor = 1; | |
4463 | memset (&w->cursor, 0, sizeof (w->cursor)); | |
4464 | memset (&w->last_cursor, 0, sizeof (w->last_cursor)); | |
4465 | memset (&w->phys_cursor, 0, sizeof (w->phys_cursor)); | |
4466 | w->phys_cursor_type = -1; | |
4467 | w->phys_cursor_width = -1; | |
4468 | w->last_cursor_off_p = w->cursor_off_p = 0; | |
4469 | w->must_be_updated_p = 0; | |
4470 | w->pseudo_window_p = 0; | |
4471 | w->frozen_window_start_p = 0; | |
4472 | w->vscroll = 0; | |
4473 | w->resize_proportionally = Qnil; | |
4474 | /* Reset window_list. */ | |
4475 | Vwindow_list = Qnil; | |
4476 | /* Return window. */ | |
4477 | XSETWINDOW (window, w); | |
4478 | return window; | |
4479 | } | |
4480 | \f | |
4481 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
4482 | doc: /* Set new total size of WINDOW to SIZE. | |
4483 | Return SIZE. | |
4484 | ||
4485 | Optional argument ADD non-nil means add SIZE to the new total size of | |
4486 | WINDOW and return the sum. | |
4487 | ||
4488 | Note: This function does not operate on any subwindows of WINDOW. */) | |
4489 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) | |
4490 | { | |
4491 | struct window *w = decode_any_window (window); | |
4492 | ||
4493 | CHECK_NUMBER (size); | |
4494 | if (NILP (add)) | |
4495 | XSETINT (w->new_total, XINT (size)); | |
4496 | else | |
4497 | XSETINT (w->new_total, XINT (w->new_total) + XINT (size)); | |
4498 | ||
4499 | return w->new_total; | |
4500 | } | |
4501 | ||
4502 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
4503 | doc: /* Set new normal size of WINDOW to SIZE. | |
4504 | Return SIZE. | |
4505 | ||
4506 | Note: This function does not operate on any subwindows of WINDOW. */) | |
4507 | (Lisp_Object window, Lisp_Object size) | |
4508 | { | |
4509 | struct window *w = decode_any_window (window); | |
4510 | ||
4511 | w->new_normal = size; | |
4512 | return w->new_normal; | |
7ab12479 JB |
4513 | } |
4514 | ||
1a13852e MR |
4515 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
4516 | non-zero) to w->new_total would result in correct heights (widths) | |
4517 | for window W and recursively all subwindows of W. | |
4518 | ||
4519 | Note: This function does not check any of `window-fixed-size-p', | |
4520 | `window-min-height' or `window-min-width'. It does check that window | |
4521 | sizes do not drop below one line (two columns). */ | |
4522 | int | |
4523 | resize_window_check (struct window *w, int horflag) | |
4524 | { | |
4525 | struct window *c; | |
4526 | ||
4527 | if (!NILP (w->vchild)) | |
4528 | /* W is a vertical combination. */ | |
4529 | { | |
4530 | c = XWINDOW (w->vchild); | |
4531 | if (horflag) | |
4532 | /* All subwindows of W must have the same width as W. */ | |
4533 | { | |
4534 | while (c) | |
4535 | { | |
4536 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
4537 | || !resize_window_check (c, horflag)) | |
4538 | return 0; | |
4539 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4540 | } | |
4541 | return 1; | |
4542 | } | |
4543 | else | |
4544 | /* The sum of the heights of the subwindows of W must equal W's | |
4545 | height. */ | |
4546 | { | |
4547 | int sum_of_sizes = 0; | |
4548 | while (c) | |
4549 | { | |
4550 | if (!resize_window_check (c, horflag)) | |
4551 | return 0; | |
4552 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
4553 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4554 | } | |
4555 | return (sum_of_sizes == XINT (w->new_total)); | |
4556 | } | |
4557 | } | |
4558 | else if (!NILP (w->hchild)) | |
4559 | /* W is a horizontal combination. */ | |
4560 | { | |
4561 | c = XWINDOW (w->hchild); | |
4562 | if (horflag) | |
4563 | /* The sum of the widths of the subwindows of W must equal W's | |
4564 | width. */ | |
4565 | { | |
4566 | int sum_of_sizes = 0; | |
4567 | while (c) | |
4568 | { | |
4569 | if (!resize_window_check (c, horflag)) | |
4570 | return 0; | |
4571 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
4572 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4573 | } | |
4574 | return (sum_of_sizes == XINT (w->new_total)); | |
4575 | } | |
4576 | else | |
4577 | /* All subwindows of W must have the same height as W. */ | |
4578 | { | |
4579 | while (c) | |
4580 | { | |
4581 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
4582 | || !resize_window_check (c, horflag)) | |
4583 | return 0; | |
4584 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4585 | } | |
4586 | return 1; | |
4587 | } | |
4588 | } | |
4589 | else | |
4590 | /* A leaf window. Make sure it's not too small. The following | |
4591 | hardcodes the values of `window-safe-min-width' (2) and | |
4592 | `window-safe-min-height' (1) which are defined in window.el. */ | |
4593 | return XINT (w->new_total) >= (horflag ? 2 : 1); | |
4594 | } | |
4595 | ||
4596 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
4597 | w->new_total for window W and recursively all subwindows of W. Also | |
4598 | calculate and assign the new vertical (horizontal) start positions of | |
4599 | each of these windows. | |
4600 | ||
4601 | This function does not perform any error checks. Make sure you have | |
4602 | run resize_window_check on W before applying this function. */ | |
4603 | void | |
4604 | resize_window_apply (struct window *w, int horflag) | |
4605 | { | |
4606 | struct window *c, *p; | |
4607 | int pos; | |
4608 | ||
4609 | /* Note: Assigning new_normal requires that the new total size of the | |
4610 | parent window has been set *before*. */ | |
4611 | if (horflag) | |
4612 | { | |
4613 | w->total_cols = w->new_total; | |
4614 | if (NUMBERP (w->new_normal)) | |
4615 | w->normal_cols = w->new_normal; | |
4616 | ||
4617 | pos = XINT (w->left_col); | |
4618 | } | |
4619 | else | |
4620 | { | |
4621 | w->total_lines = w->new_total; | |
4622 | if (NUMBERP (w->new_normal)) | |
4623 | w->normal_lines = w->new_normal; | |
4624 | ||
4625 | pos = XINT (w->top_line); | |
4626 | } | |
4627 | ||
4628 | if (!NILP (w->vchild)) | |
4629 | /* W is a vertical combination. */ | |
4630 | { | |
4631 | c = XWINDOW (w->vchild); | |
4632 | while (c) | |
4633 | { | |
4634 | if (horflag) | |
4635 | XSETFASTINT (c->left_col, pos); | |
4636 | else | |
4637 | XSETFASTINT (c->top_line, pos); | |
4638 | resize_window_apply (c, horflag); | |
4639 | if (!horflag) | |
4640 | pos = pos + XINT (c->total_lines); | |
4641 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4642 | } | |
4643 | } | |
4644 | else if (!NILP (w->hchild)) | |
4645 | /* W is a horizontal combination. */ | |
4646 | { | |
4647 | c = XWINDOW (w->hchild); | |
4648 | while (c) | |
4649 | { | |
4650 | if (horflag) | |
4651 | XSETFASTINT (c->left_col, pos); | |
4652 | else | |
4653 | XSETFASTINT (c->top_line, pos); | |
4654 | resize_window_apply (c, horflag); | |
4655 | if (horflag) | |
4656 | pos = pos + XINT (c->total_cols); | |
4657 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4658 | } | |
4659 | } | |
4660 | ||
4661 | /* Clear out some redisplay caches. */ | |
4662 | XSETFASTINT (w->last_modified, 0); | |
4663 | XSETFASTINT (w->last_overlay_modified, 0); | |
4664 | } | |
4665 | ||
4666 | ||
4667 | DEFUN ("resize-window-apply", Fresize_window_apply, Sresize_window_apply, 1, 2, 0, | |
4668 | doc: /* Apply requested size values for window-tree of FRAME. | |
4669 | Optional argument HORIZONTAL omitted or nil means apply requested height | |
4670 | values. HORIZONTAL non-nil means apply requested width values. | |
4671 | ||
4672 | This function checks whether the requested values sum up to a valid | |
4673 | window layout, recursively assigns the new sizes of all subwindows and | |
4674 | calculates and assigns the new start positions of these windows. | |
4675 | ||
4676 | Note: This function does not check any of `window-fixed-size-p', | |
4677 | `window-min-height' or `window-min-width'. All these checks have to | |
4678 | be applied on the Elisp level. */) | |
4679 | (Lisp_Object frame, Lisp_Object horizontal) | |
4680 | { | |
4681 | struct frame *f; | |
4682 | struct window *r; | |
4683 | int horflag = !NILP (horizontal); | |
4684 | ||
4685 | if (NILP (frame)) | |
4686 | frame = selected_frame; | |
4687 | CHECK_LIVE_FRAME (frame); | |
4688 | ||
4689 | f = XFRAME (frame); | |
4690 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4691 | ||
4692 | if (!resize_window_check (r, horflag) | |
4693 | || ! EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) | |
4694 | return Qnil; | |
4695 | ||
4696 | BLOCK_INPUT; | |
4697 | resize_window_apply (r, horflag); | |
4698 | ||
4699 | windows_or_buffers_changed++; | |
4700 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4701 | ||
4702 | adjust_glyphs (f); | |
4703 | UNBLOCK_INPUT; | |
4704 | ||
4705 | run_window_configuration_change_hook (f); | |
4706 | ||
4707 | return Qt; | |
4708 | } | |
4709 | ||
4710 | ||
4711 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
4712 | HORFLAG 1 means resize windows when number of columns of F is set to | |
4713 | SIZE. | |
4714 | ||
4715 | This function can delete all windows but the selected one in order to | |
4716 | satisfy the request. The result will be meaningful if and only if | |
4717 | F's windows have meaningful sizes when you call this. */ | |
4718 | void | |
4719 | resize_frame_windows (struct frame *f, int size, int horflag) | |
4720 | { | |
4721 | Lisp_Object root = f->root_window; | |
4722 | struct window *r = XWINDOW (root); | |
4723 | Lisp_Object mini = f->minibuffer_window; | |
4724 | struct window *m; | |
4725 | /* new_size is the new size of the frame's root window. */ | |
4726 | int new_size = (horflag | |
4727 | ? size | |
4728 | : (size | |
4729 | - FRAME_TOP_MARGIN (f) | |
4730 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
4731 | ? 1 : 0))); | |
4732 | ||
4733 | XSETFASTINT (r->top_line, FRAME_TOP_MARGIN (f)); | |
4734 | if (NILP (r->vchild) && NILP (r->hchild)) | |
4735 | /* For a leaf root window just set the size. */ | |
4736 | if (horflag) | |
4737 | XSETFASTINT (r->total_cols, new_size); | |
4738 | else | |
4739 | XSETFASTINT (r->total_lines, new_size); | |
4740 | else | |
4741 | { | |
4742 | /* old_size is the old size of the frame's root window. */ | |
4743 | int old_size = XFASTINT (horflag ? r->total_cols : r->total_lines); | |
4744 | Lisp_Object delta; | |
4745 | ||
4746 | XSETINT (delta, new_size - old_size); | |
4747 | /* Try a "normal" resize first. */ | |
4748 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
4749 | if (resize_window_check (r, horflag) && new_size == XINT (r->new_total)) | |
4750 | resize_window_apply (r, horflag); | |
4751 | else | |
4752 | { | |
4753 | /* Try with "reasonable" minimum sizes next. */ | |
4754 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
4755 | if (resize_window_check (r, horflag) | |
4756 | && new_size == XINT (r->new_total)) | |
4757 | resize_window_apply (r, horflag); | |
4758 | else | |
4759 | { | |
4760 | /* Finally, try with "safe" minimum sizes. */ | |
4761 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
4762 | if (resize_window_check (r, horflag) | |
4763 | && new_size == XINT (r->new_total)) | |
4764 | resize_window_apply (r, horflag); | |
4765 | else | |
4766 | { | |
4767 | /* We lost. Delete all windows but the frame's | |
4768 | selected one. */ | |
4769 | root = f->selected_window; | |
4770 | Fdelete_other_windows_internal (root, Qnil); | |
4771 | if (horflag) | |
4772 | XSETFASTINT (XWINDOW (root)->total_cols, new_size); | |
4773 | else | |
4774 | XSETFASTINT (XWINDOW (root)->total_lines, new_size); | |
4775 | } | |
4776 | } | |
4777 | } | |
4778 | } | |
4779 | ||
4780 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
4781 | { | |
4782 | m = XWINDOW (mini); | |
4783 | if (horflag) | |
4784 | XSETFASTINT (m->total_cols, size); | |
4785 | else | |
4786 | { | |
4787 | /* Are we sure we always want 1 line here? */ | |
4788 | XSETFASTINT (m->total_lines, 1); | |
4789 | XSETFASTINT (m->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
4790 | } | |
4791 | } | |
4792 | } | |
4793 | ||
4794 | ||
4795 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
4796 | doc: /* Split window OLD. | |
4797 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
4798 | new window. In any case TOTAL-SIZE must be a positive integer | |
4799 | ||
4800 | Third argument SIDE nil (or `below') specifies that the new window shall | |
4801 | be located below WINDOW. SIDE `above' means the new window shall be | |
4802 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
4803 | lines of the new window including space reserved for the mode and/or | |
4804 | header line. | |
4805 | ||
4806 | SIDE t (or `right') specifies that the new window shall be located on | |
4807 | the right side of WINDOW. SIDE `left' means the new window shall be | |
4808 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
4809 | number of columns of the new window including space reserved for fringes | |
4810 | and the scrollbar or a divider column. | |
4811 | ||
4812 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
4813 | according to the SIDE argument. | |
4814 | ||
4815 | The new total and normal sizes of all involved windows must have been | |
4816 | set correctly. See the code of `split-window' for how this is done. */) | |
4817 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
4818 | { | |
4819 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
4820 | parent window or an internal window we have to install as OLD's new | |
4821 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
4822 | provided OLD is a leaf window, or to the frame's selected window. | |
4823 | NEW (*n) is the new window created with some parameters taken from | |
4824 | REFERENCE (*r). */ | |
4825 | register Lisp_Object new, frame, reference; | |
4826 | register struct window *o, *p, *n, *r; | |
4827 | struct frame *f; | |
4828 | int horflag | |
4829 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
4830 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
4831 | int do_nest = 0; | |
4832 | ||
4833 | CHECK_WINDOW (old); | |
4834 | o = XWINDOW (old); | |
4835 | frame = WINDOW_FRAME (o); | |
4836 | f = XFRAME (frame); | |
4837 | ||
4838 | CHECK_NUMBER (total_size); | |
4839 | ||
4840 | /* Set do_nest to 1 if we have to make a new parent window. We do | |
4841 | that if either `window-nest' is non-nil, or OLD has no parent, or | |
4842 | OLD is ortho-combined. */ | |
4843 | do_nest = | |
4844 | !NILP (Vwindow_nest) | |
4845 | || NILP (o->parent) | |
4846 | || NILP (horflag | |
4847 | ? (XWINDOW (o->parent)->hchild) | |
4848 | : (XWINDOW (o->parent)->vchild)); | |
4849 | ||
4850 | /* We need a live reference window to initialize some parameters. */ | |
4851 | if (WINDOW_LIVE_P (old)) | |
4852 | /* OLD is live, use it as reference window. */ | |
4853 | reference = old; | |
4854 | else | |
4855 | /* Use the frame's selected window as reference window. */ | |
4856 | reference = FRAME_SELECTED_WINDOW (f); | |
4857 | r = XWINDOW (reference); | |
4858 | ||
4859 | /* The following bugs are caught by `split-window'. */ | |
4860 | if (MINI_WINDOW_P (o)) | |
4861 | error ("Attempt to split minibuffer window"); | |
4862 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
4863 | error ("Size of new window too small (after split)"); | |
4864 | else if (!do_nest && !NILP (Vwindow_splits)) | |
4865 | /* `window-splits' non-nil means try to resize OLD's siblings | |
4866 | proportionally. */ | |
4867 | { | |
4868 | p = XWINDOW (o->parent); | |
4869 | /* Temporarily pretend we split the parent window. */ | |
4870 | XSETINT (p->new_total, | |
4871 | XINT (horflag ? p->total_cols : p->total_lines) | |
4872 | - XINT (total_size)); | |
4873 | if (!resize_window_check (p, horflag)) | |
4874 | error ("Window sizes don't fit"); | |
4875 | else | |
4876 | /* Undo the temporary pretension. */ | |
4877 | p->new_total = horflag ? p->total_cols : p->total_lines; | |
4878 | } | |
4879 | else | |
4880 | { | |
4881 | if (!resize_window_check (o, horflag)) | |
4882 | error ("Resizing old window failed"); | |
4883 | else if (XINT (total_size) + XINT (o->new_total) | |
4884 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
4885 | error ("Sum of sizes of old and new window don't fit"); | |
4886 | } | |
4887 | ||
4888 | /* This is our point of no return. */ | |
4889 | if (do_nest) | |
4890 | { | |
4891 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
4892 | by make_parent_window and we need it below for assigning it to | |
4893 | p->new_normal. */ | |
4894 | Lisp_Object new_normal = horflag ? o->normal_cols : o->normal_lines; | |
4895 | ||
4896 | make_parent_window (old, horflag); | |
4897 | p = XWINDOW (o->parent); | |
4898 | /* Store value of `window-nest' in new parent's nest slot. */ | |
4899 | p->nest = Vwindow_nest; | |
4900 | /* Have PARENT inherit splits slot value from OLD. */ | |
4901 | p->splits = o->splits; | |
4902 | /* Store value of `window-splits' in OLD's splits slot. */ | |
4903 | o->splits = Vwindow_splits; | |
4904 | /* These get applied below. */ | |
4905 | p->new_total = horflag ? o->total_cols : o->total_lines; | |
4906 | p->new_normal = new_normal; | |
4907 | } | |
4908 | else | |
4909 | p = XWINDOW (o->parent); | |
4910 | ||
4911 | windows_or_buffers_changed++; | |
4912 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4913 | new = make_window (); | |
4914 | n = XWINDOW (new); | |
4915 | n->frame = frame; | |
4916 | n->parent = o->parent; | |
4917 | n->vchild = n->hchild = Qnil; | |
4918 | ||
4919 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
4920 | { | |
4921 | n->prev = o->prev; | |
4922 | if (NILP (n->prev)) | |
4923 | if (horflag) | |
4924 | p->hchild = new; | |
4925 | else | |
4926 | p->vchild = new; | |
4927 | else | |
4928 | XWINDOW (n->prev)->next = new; | |
4929 | n->next = old; | |
4930 | o->prev = new; | |
4931 | } | |
4932 | else | |
4933 | { | |
4934 | n->next = o->next; | |
4935 | if (!NILP (n->next)) | |
4936 | XWINDOW (n->next)->prev = new; | |
4937 | n->prev = old; | |
4938 | o->next = new; | |
4939 | } | |
4940 | ||
4941 | n->buffer = Qt; | |
4942 | n->window_end_valid = Qnil; | |
4943 | memset (&n->last_cursor, 0, sizeof n->last_cursor); | |
4944 | ||
4945 | /* Get special geometry settings from reference window. */ | |
4946 | n->left_margin_cols = r->left_margin_cols; | |
4947 | n->right_margin_cols = r->right_margin_cols; | |
4948 | n->left_fringe_width = r->left_fringe_width; | |
4949 | n->right_fringe_width = r->right_fringe_width; | |
4950 | n->fringes_outside_margins = r->fringes_outside_margins; | |
4951 | n->scroll_bar_width = r->scroll_bar_width; | |
4952 | n->vertical_scroll_bar_type = r->vertical_scroll_bar_type; | |
4953 | ||
4954 | /* Store `window-splits' in NEW's splits slot. */ | |
4955 | n->splits = Vwindow_splits; | |
4956 | ||
4957 | /* Directly assign orthogonal coordinates and sizes. */ | |
4958 | if (horflag) | |
4959 | { | |
4960 | n->top_line = o->top_line; | |
4961 | n->total_lines = o->total_lines; | |
4962 | } | |
4963 | else | |
4964 | { | |
4965 | n->left_col = o->left_col; | |
4966 | n->total_cols = o->total_cols; | |
4967 | } | |
4968 | ||
4969 | /* Iso-coordinates and sizes are assigned by resize_window_apply, | |
4970 | get them ready here. */ | |
4971 | n->new_total = total_size; | |
4972 | n->new_normal = normal_size; | |
4973 | ||
4974 | BLOCK_INPUT; | |
4975 | resize_window_apply (p, horflag); | |
4976 | adjust_glyphs (f); | |
4977 | /* Set buffer of NEW to buffer of reference window. Don't run | |
4978 | any hooks. */ | |
4979 | set_window_buffer (new, r->buffer, 0, 1); | |
4980 | UNBLOCK_INPUT; | |
4981 | ||
4982 | /* Maybe we should run the scroll functions in Elisp (which already | |
4983 | runs the configuration change hook). */ | |
4984 | if (! NILP (Vwindow_scroll_functions)) | |
4985 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
4986 | Fmarker_position (n->start)); | |
4987 | /* Return NEW. */ | |
4988 | return new; | |
4989 | } | |
4990 | ||
4991 | ||
4992 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
4993 | doc: /* Remove WINDOW from its frame. | |
4994 | WINDOW defaults to the selected window. Return nil. Signal an error | |
4995 | when WINDOW is the only window on its frame. */) | |
4996 | (register Lisp_Object window) | |
4997 | { | |
4998 | register Lisp_Object parent, sibling, frame, root; | |
4999 | struct window *w, *p, *s, *r; | |
5000 | struct frame *f; | |
5001 | int horflag; | |
5002 | int before_sibling = 0; | |
5003 | ||
5004 | w = decode_any_window (window); | |
5005 | XSETWINDOW (window, w); | |
5006 | if (NILP (w->buffer) && NILP (w->hchild) && NILP (w->vchild)) | |
5007 | /* It's a no-op to delete an already deleted window. */ | |
5008 | return Qnil; | |
5009 | ||
5010 | parent = w->parent; | |
5011 | if (NILP (parent)) | |
5012 | /* Never delete a minibuffer or frame root window. */ | |
5013 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
5014 | else if (NILP (w->prev) && NILP (w->next)) | |
5015 | /* Rather bow out here, this case should be handled on the Elisp | |
5016 | level. */ | |
5017 | error ("Attempt to delete sole window of parent"); | |
5018 | ||
5019 | p = XWINDOW (parent); | |
5020 | horflag = NILP (p->vchild); | |
5021 | ||
5022 | frame = WINDOW_FRAME (w); | |
5023 | f = XFRAME (frame); | |
5024 | ||
5025 | root = FRAME_ROOT_WINDOW (f); | |
5026 | r = XWINDOW (root); | |
5027 | ||
5028 | /* Unlink WINDOW from window tree. */ | |
5029 | if (NILP (w->prev)) | |
5030 | /* Get SIBLING below (on the right of) WINDOW. */ | |
5031 | { | |
5032 | /* before_sibling 1 means WINDOW is the first child of its | |
5033 | parent and thus before the sibling. */ | |
5034 | before_sibling = 1; | |
5035 | sibling = w->next; | |
5036 | s = XWINDOW (sibling); | |
5037 | s->prev = Qnil; | |
5038 | if (horflag) | |
5039 | p->hchild = sibling; | |
5040 | else | |
5041 | p->vchild = sibling; | |
5042 | } | |
5043 | else | |
5044 | /* Get SIBLING above (on the left of) WINDOW. */ | |
5045 | { | |
5046 | sibling = w->prev; | |
5047 | s = XWINDOW (sibling); | |
5048 | s->next = w->next; | |
5049 | if (!NILP (s->next)) | |
5050 | XWINDOW (s->next)->prev = sibling; | |
5051 | } | |
5052 | ||
5053 | if (resize_window_check (r, horflag) | |
5054 | && EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) | |
5055 | /* We can delete WINDOW now. */ | |
5056 | { | |
5057 | /* Block input. */ | |
5058 | BLOCK_INPUT; | |
5059 | resize_window_apply (p, horflag); | |
5060 | ||
5061 | windows_or_buffers_changed++; | |
5062 | Vwindow_list = Qnil; | |
5063 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
5064 | ||
5065 | w->next = Qnil; /* Don't delete w->next too. */ | |
5066 | free_window_matrices (w); | |
5067 | ||
5068 | if (!NILP (w->vchild)) | |
5069 | { | |
5070 | delete_all_subwindows (w->vchild); | |
5071 | w->vchild = Qnil; | |
5072 | } | |
5073 | else if (!NILP (w->hchild)) | |
5074 | { | |
5075 | delete_all_subwindows (w->hchild); | |
5076 | w->hchild = Qnil; | |
5077 | } | |
5078 | else if (!NILP (w->buffer)) | |
5079 | { | |
5080 | unshow_buffer (w); | |
5081 | unchain_marker (XMARKER (w->pointm)); | |
5082 | unchain_marker (XMARKER (w->start)); | |
5083 | w->buffer = Qnil; | |
5084 | } | |
5085 | ||
5086 | if (NILP (s->prev) && NILP (s->next)) | |
5087 | /* A matrjoshka where SIBLING has become the only child of | |
5088 | PARENT. */ | |
5089 | { | |
5090 | /* Put SIBLING into PARENT's place. */ | |
5091 | replace_window (parent, sibling, 0); | |
5092 | /* Have SIBLING inherit the following three slot values from | |
5093 | PARENT (the nest slot is not inherited). */ | |
5094 | s->normal_cols = p->normal_cols; | |
5095 | s->normal_lines = p->normal_lines; | |
5096 | s->splits = p->splits; | |
5097 | /* Mark PARENT as deleted. */ | |
5098 | p->vchild = p->hchild = Qnil; | |
5099 | /* Try to merge SIBLING into its new parent. */ | |
5100 | recombine_windows (sibling); | |
5101 | } | |
5102 | ||
5103 | adjust_glyphs (f); | |
5104 | ||
5105 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
5106 | /* We deleted the frame's selected window. */ | |
5107 | { | |
5108 | /* Use the frame's first window as fallback ... */ | |
5109 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
5110 | /* ... but preferably use its most recently used window. */ | |
5111 | Lisp_Object mru_window; | |
5112 | ||
5113 | /* `get-mru-window' might fail for some reason so play it safe | |
5114 | - promote the first window _without recording it_ first. */ | |
5115 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
5116 | Fselect_window (new_selected_window, Qt); | |
5117 | else | |
5118 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
5119 | ||
5120 | UNBLOCK_INPUT; | |
5121 | ||
5122 | /* Now look whether `get-mru-window' gets us something. */ | |
5123 | mru_window = call1 (Qget_mru_window, frame); | |
5124 | if (WINDOW_LIVE_P (mru_window) | |
5125 | && EQ (XWINDOW (mru_window)->frame, frame)) | |
5126 | new_selected_window = mru_window; | |
5127 | ||
5128 | /* If all ended up well, we now promote the mru window. */ | |
5129 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
5130 | Fselect_window (new_selected_window, Qnil); | |
5131 | else | |
5132 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
5133 | } | |
5134 | else | |
5135 | UNBLOCK_INPUT; | |
5136 | ||
5137 | /* Must be run by the caller: | |
5138 | run_window_configuration_change_hook (f); */ | |
5139 | } | |
5140 | else | |
5141 | /* We failed: Relink WINDOW into window tree. */ | |
5142 | { | |
5143 | if (before_sibling) | |
5144 | { | |
5145 | s->prev = window; | |
5146 | if (horflag) | |
5147 | p->hchild = window; | |
5148 | else | |
5149 | p->vchild = window; | |
5150 | } | |
5151 | else | |
5152 | { | |
5153 | s->next = window; | |
5154 | if (!NILP (w->next)) | |
5155 | XWINDOW (w->next)->prev = window; | |
5156 | } | |
5157 | error ("Deletion failed"); | |
5158 | } | |
5159 | ||
5160 | return Qnil; | |
5161 | } | |
5162 | ||
7ab12479 | 5163 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", |
fdb82f93 PJ |
5164 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
5165 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
5166 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
5167 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
5168 | window's scroll bar, or the divider column to its right. | |
c2755926 | 5169 | Interactively, all arguments are nil. |
c2755926 | 5170 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
5171 | The upper or leftmost window is the original one, and remains selected |
5172 | if it was selected before. | |
5173 | ||
87527026 | 5174 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
5842a27b | 5175 | (Lisp_Object window, Lisp_Object size, Lisp_Object horizontal) |
7ab12479 JB |
5176 | { |
5177 | register Lisp_Object new; | |
5178 | register struct window *o, *p; | |
c0807608 | 5179 | FRAME_PTR fo; |
77ae0fe3 | 5180 | register int size_int; |
7ab12479 | 5181 | |
265a9e55 | 5182 | if (NILP (window)) |
7ab12479 JB |
5183 | window = selected_window; |
5184 | else | |
b7826503 | 5185 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5186 | |
5187 | o = XWINDOW (window); | |
c0807608 | 5188 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 5189 | |
77ae0fe3 | 5190 | if (NILP (size)) |
7ab12479 | 5191 | { |
87527026 | 5192 | if (!NILP (horizontal)) |
c0807608 | 5193 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
5194 | the usable space in columns by two. |
5195 | We round up, since the left-hand window may include | |
5196 | a dividing line, while the right-hand may not. */ | |
949cf20f | 5197 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 5198 | else |
949cf20f | 5199 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
5200 | } |
5201 | else | |
5202 | { | |
b7826503 | 5203 | CHECK_NUMBER (size); |
77ae0fe3 | 5204 | size_int = XINT (size); |
7ab12479 JB |
5205 | } |
5206 | ||
5207 | if (MINI_WINDOW_P (o)) | |
5208 | error ("Attempt to split minibuffer window"); | |
87527026 | 5209 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 5210 | error ("Attempt to split fixed-size window"); |
7ab12479 | 5211 | |
87527026 | 5212 | if (NILP (horizontal)) |
7ab12479 | 5213 | { |
047aaeb9 MR |
5214 | int window_safe_height = window_min_size_2 (o, 0, 0); |
5215 | ||
f1de8c77 | 5216 | if (size_int < window_safe_height) |
77ae0fe3 | 5217 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 5218 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 5219 | error ("Window height %d too small (after splitting)", |
5fdb398c | 5220 | (int) (XFASTINT (o->total_lines) - size_int)); |
265a9e55 JB |
5221 | if (NILP (o->parent) |
5222 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
5223 | { |
5224 | make_dummy_parent (window); | |
5225 | new = o->parent; | |
5226 | XWINDOW (new)->vchild = window; | |
5227 | } | |
5228 | } | |
5229 | else | |
5230 | { | |
047aaeb9 MR |
5231 | int window_safe_width = window_min_size_2 (o, 1, 0); |
5232 | ||
f1de8c77 | 5233 | if (size_int < window_safe_width) |
77ae0fe3 | 5234 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 5235 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 5236 | error ("Window width %d too small (after splitting)", |
5fdb398c | 5237 | (int) (XFASTINT (o->total_cols) - size_int)); |
265a9e55 JB |
5238 | if (NILP (o->parent) |
5239 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
5240 | { |
5241 | make_dummy_parent (window); | |
5242 | new = o->parent; | |
5243 | XWINDOW (new)->hchild = window; | |
5244 | } | |
5245 | } | |
5246 | ||
5247 | /* Now we know that window's parent is a vertical combination | |
5248 | if we are dividing vertically, or a horizontal combination | |
5249 | if we are making side-by-side windows */ | |
5250 | ||
5251 | windows_or_buffers_changed++; | |
c0807608 | 5252 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
5253 | new = make_window (); |
5254 | p = XWINDOW (new); | |
5255 | ||
44fa5b1e | 5256 | p->frame = o->frame; |
7ab12479 | 5257 | p->next = o->next; |
265a9e55 | 5258 | if (!NILP (p->next)) |
7ab12479 JB |
5259 | XWINDOW (p->next)->prev = new; |
5260 | p->prev = window; | |
5261 | o->next = new; | |
5262 | p->parent = o->parent; | |
5263 | p->buffer = Qt; | |
5500c422 | 5264 | p->window_end_valid = Qnil; |
72af86bd | 5265 | memset (&p->last_cursor, 0, sizeof p->last_cursor); |
7ab12479 | 5266 | |
949cf20f KS |
5267 | /* Duplicate special geometry settings. */ |
5268 | ||
5269 | p->left_margin_cols = o->left_margin_cols; | |
5270 | p->right_margin_cols = o->right_margin_cols; | |
5271 | p->left_fringe_width = o->left_fringe_width; | |
5272 | p->right_fringe_width = o->right_fringe_width; | |
5273 | p->fringes_outside_margins = o->fringes_outside_margins; | |
5274 | p->scroll_bar_width = o->scroll_bar_width; | |
5275 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
5276 | ||
44fa5b1e | 5277 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 5278 | |
87527026 | 5279 | if (!NILP (horizontal)) |
7ab12479 | 5280 | { |
949cf20f KS |
5281 | p->total_lines = o->total_lines; |
5282 | p->top_line = o->top_line; | |
5283 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
5284 | XSETFASTINT (o->total_cols, size_int); | |
5285 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
5286 | adjust_window_margins (p); | |
5287 | adjust_window_margins (o); | |
7ab12479 JB |
5288 | } |
5289 | else | |
5290 | { | |
949cf20f KS |
5291 | p->left_col = o->left_col; |
5292 | p->total_cols = o->total_cols; | |
5293 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
5294 | XSETFASTINT (o->total_lines, size_int); | |
5295 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
5296 | } |
5297 | ||
5500c422 GM |
5298 | /* Adjust glyph matrices. */ |
5299 | adjust_glyphs (fo); | |
949cf20f KS |
5300 | |
5301 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
5302 | return new; |
5303 | } | |
1a13852e MR |
5304 | |
5305 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, | |
5306 | doc: /* Resize minibuffer window WINDOW. */) | |
5307 | (Lisp_Object window) | |
5308 | { | |
5309 | struct window *w = XWINDOW (window); | |
5310 | struct window *r; | |
5311 | struct frame *f; | |
5312 | int height; | |
5313 | ||
5314 | CHECK_WINDOW (window); | |
5315 | f = XFRAME (w->frame); | |
5316 | ||
5317 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) | |
5318 | error ("Not a valid minibuffer window"); | |
5319 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
5320 | error ("Cannot resize a minibuffer-only frame"); | |
5321 | ||
5322 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
5323 | height = XINT (r->total_lines) + XINT (w->total_lines); | |
5324 | if (resize_window_check (r, 0) | |
5325 | && XINT (w->new_total) > 0 | |
5326 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
5327 | { | |
5328 | BLOCK_INPUT; | |
5329 | resize_window_apply (r, 0); | |
5330 | ||
5331 | w->total_lines = w->new_total; | |
5332 | XSETFASTINT (w->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
5333 | ||
5334 | windows_or_buffers_changed++; | |
5335 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
5336 | adjust_glyphs (f); | |
5337 | UNBLOCK_INPUT; | |
5338 | ||
5339 | run_window_configuration_change_hook (f); | |
5340 | return Qt; | |
5341 | } | |
5342 | else error ("Failed to resize minibuffer window"); | |
5343 | } | |
7ab12479 | 5344 | \f |
56ebfae2 | 5345 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
5346 | doc: /* Make selected window SIZE lines taller. |
5347 | Interactively, if no argument is given, make the selected window one | |
5348 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
5349 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
5350 | -SIZE lines or columns. Return nil. | |
5351 | ||
5352 | This function can delete windows if they get too small. The size of | |
5353 | fixed size windows is not altered by this function. */) | |
5842a27b | 5354 | (Lisp_Object size, Lisp_Object horizontal) |
7ab12479 | 5355 | { |
aac0c6e3 MR |
5356 | CHECK_NUMBER (size); |
5357 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 5358 | |
eeca6f6f | 5359 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 5360 | |
7ab12479 JB |
5361 | return Qnil; |
5362 | } | |
5363 | ||
56ebfae2 | 5364 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
5365 | doc: /* Make selected window SIZE lines smaller. |
5366 | Interactively, if no argument is given, make the selected window one | |
5367 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
5368 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
5369 | window by -SIZE lines or columns. Return nil. | |
5370 | ||
5371 | This function can delete windows if they get too small. The size of | |
5372 | fixed size windows is not altered by this function. */) | |
5842a27b | 5373 | (Lisp_Object size, Lisp_Object horizontal) |
aac0c6e3 MR |
5374 | { |
5375 | CHECK_NUMBER (size); | |
5376 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 5377 | |
eeca6f6f | 5378 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 5379 | |
7ab12479 JB |
5380 | return Qnil; |
5381 | } | |
5382 | ||
2f7c71a1 | 5383 | static int |
971de7fb | 5384 | window_height (Lisp_Object window) |
7ab12479 JB |
5385 | { |
5386 | register struct window *p = XWINDOW (window); | |
949cf20f | 5387 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
5388 | } |
5389 | ||
2f7c71a1 | 5390 | static int |
971de7fb | 5391 | window_width (Lisp_Object window) |
7ab12479 JB |
5392 | { |
5393 | register struct window *p = XWINDOW (window); | |
949cf20f | 5394 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
5395 | } |
5396 | ||
177c0ea7 | 5397 | |
7ab12479 | 5398 | #define CURBEG(w) \ |
5afc696a | 5399 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
5400 | |
5401 | #define CURSIZE(w) \ | |
5afc696a | 5402 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 5403 | |
233a4a2c | 5404 | |
047aaeb9 MR |
5405 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
5406 | horizontally; zero means do it vertically. | |
f95284d2 | 5407 | |
5afc696a | 5408 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 5409 | request. If they become too small in the process, they may be |
56ebfae2 | 5410 | deleted. */ |
7ab12479 | 5411 | |
f984d4fc | 5412 | static void |
971de7fb | 5413 | enlarge_window (Lisp_Object window, int delta, int horiz_flag) |
7ab12479 | 5414 | { |
86c8e823 | 5415 | Lisp_Object parent, next, prev; |
233a4a2c | 5416 | struct window *p; |
3578db3c KR |
5417 | Lisp_Object *sizep; |
5418 | int maximum; | |
f57e2426 | 5419 | int (*sizefun) (Lisp_Object) |
5afc696a | 5420 | = horiz_flag ? window_width : window_height; |
f57e2426 | 5421 | void (*setsizefun) (Lisp_Object, int, int) |
5afc696a | 5422 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 5423 | |
233a4a2c | 5424 | /* Give up if this window cannot be resized. */ |
5afc696a | 5425 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
5426 | error ("Window is not resizable"); |
5427 | ||
5428 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
5429 | while (1) |
5430 | { | |
5431 | p = XWINDOW (window); | |
5432 | parent = p->parent; | |
177c0ea7 | 5433 | |
265a9e55 | 5434 | if (NILP (parent)) |
7ab12479 | 5435 | { |
5afc696a | 5436 | if (horiz_flag) |
7ab12479 JB |
5437 | error ("No other window to side of this one"); |
5438 | break; | |
5439 | } | |
177c0ea7 | 5440 | |
5afc696a | 5441 | if (horiz_flag |
233a4a2c | 5442 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 5443 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 5444 | break; |
177c0ea7 | 5445 | |
7ab12479 JB |
5446 | window = parent; |
5447 | } | |
5448 | ||
05c2896a | 5449 | sizep = &CURSIZE (window); |
7ab12479 | 5450 | |
7ab12479 JB |
5451 | { |
5452 | register int maxdelta; | |
7ab12479 | 5453 | |
f95284d2 RS |
5454 | /* Compute the maximum size increment this window can have. */ |
5455 | ||
56ebfae2 RS |
5456 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
5457 | /* This is a main window followed by a minibuffer. */ | |
5458 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
5459 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 5460 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
5461 | /* This is a minibuffer following a main window. */ |
5462 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
5463 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 5464 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
5465 | /* This is a frame with only one window, a minibuffer-only |
5466 | or a minibufferless frame. */ | |
5467 | : (delta = 0)); | |
7ab12479 JB |
5468 | |
5469 | if (delta > maxdelta) | |
5470 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
5471 | the full frame, or make the only window aside from the |
5472 | minibuffer the full frame. */ | |
7ab12479 | 5473 | delta = maxdelta; |
6b54027b | 5474 | } |
d5783c40 | 5475 | |
047aaeb9 MR |
5476 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
5477 | horiz_flag, 0, 0, 0)) | |
6b54027b | 5478 | { |
543f5fb1 | 5479 | delete_window (window); |
d5783c40 | 5480 | return; |
6b54027b RS |
5481 | } |
5482 | ||
5483 | if (delta == 0) | |
5484 | return; | |
7ab12479 | 5485 | |
f95284d2 | 5486 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 5487 | maximum = 0; |
9beb8baa | 5488 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 5489 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 5490 | horiz_flag, 0, 0, 0); |
9beb8baa | 5491 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 5492 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 5493 | horiz_flag, 0, 0, 0); |
db98a733 | 5494 | |
f95284d2 | 5495 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 5496 | if (delta <= maximum) |
7ab12479 | 5497 | { |
db98a733 RS |
5498 | Lisp_Object first_unaffected; |
5499 | Lisp_Object first_affected; | |
233a4a2c | 5500 | int fixed_p; |
db98a733 RS |
5501 | |
5502 | next = p->next; | |
5503 | prev = p->prev; | |
5504 | first_affected = window; | |
5505 | /* Look at one sibling at a time, | |
5506 | moving away from this window in both directions alternately, | |
5507 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 5508 | while (delta != 0 |
56ebfae2 | 5509 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 5510 | { |
db98a733 RS |
5511 | if (! NILP (next)) |
5512 | { | |
c1636aa6 | 5513 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
5514 | - window_min_size (XWINDOW (next), horiz_flag, |
5515 | 0, 0, &fixed_p)); | |
233a4a2c GM |
5516 | if (!fixed_p) |
5517 | { | |
5518 | if (this_one > delta) | |
5519 | this_one = delta; | |
177c0ea7 | 5520 | |
233a4a2c | 5521 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 5522 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 5523 | |
233a4a2c GM |
5524 | delta -= this_one; |
5525 | } | |
177c0ea7 | 5526 | |
db98a733 RS |
5527 | next = XWINDOW (next)->next; |
5528 | } | |
177c0ea7 | 5529 | |
db98a733 RS |
5530 | if (delta == 0) |
5531 | break; | |
177c0ea7 | 5532 | |
56ebfae2 | 5533 | if (! NILP (prev)) |
db98a733 | 5534 | { |
c1636aa6 | 5535 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
5536 | - window_min_size (XWINDOW (prev), horiz_flag, |
5537 | 0, 0, &fixed_p)); | |
233a4a2c GM |
5538 | if (!fixed_p) |
5539 | { | |
5540 | if (this_one > delta) | |
5541 | this_one = delta; | |
177c0ea7 | 5542 | |
233a4a2c | 5543 | first_affected = prev; |
177c0ea7 | 5544 | |
233a4a2c | 5545 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 5546 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
5547 | |
5548 | delta -= this_one; | |
5549 | } | |
177c0ea7 | 5550 | |
db98a733 RS |
5551 | prev = XWINDOW (prev)->prev; |
5552 | } | |
5553 | } | |
5554 | ||
233a4a2c GM |
5555 | xassert (delta == 0); |
5556 | ||
db98a733 RS |
5557 | /* Now recalculate the edge positions of all the windows affected, |
5558 | based on the new sizes. */ | |
5559 | first_unaffected = next; | |
5560 | prev = first_affected; | |
5561 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
5562 | prev = next, next = XWINDOW (next)->next) | |
5563 | { | |
3578db3c | 5564 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
5565 | /* This does not change size of NEXT, |
5566 | but it propagates the new top edge to its children */ | |
5567 | (*setsizefun) (next, (*sizefun) (next), 0); | |
5568 | } | |
7ab12479 JB |
5569 | } |
5570 | else | |
5571 | { | |
5572 | register int delta1; | |
5573 | register int opht = (*sizefun) (parent); | |
5574 | ||
3578db3c | 5575 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
5576 | { |
5577 | /* If trying to grow this window to or beyond size of the parent, | |
5578 | just delete all the sibling windows. */ | |
4554d213 | 5579 | Lisp_Object start, tem; |
daf516d3 | 5580 | |
dc1ab1ee RS |
5581 | start = XWINDOW (parent)->vchild; |
5582 | if (NILP (start)) | |
5583 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 5584 | |
dc1ab1ee RS |
5585 | /* Delete any siblings that come after WINDOW. */ |
5586 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
5587 | while (! NILP (tem)) |
5588 | { | |
4554d213 | 5589 | Lisp_Object next1 = XWINDOW (tem)->next; |
dc1ab1ee | 5590 | delete_window (tem); |
4554d213 | 5591 | tem = next1; |
dc1ab1ee RS |
5592 | } |
5593 | ||
5594 | /* Delete any siblings that come after WINDOW. | |
5595 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 5596 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
5597 | tem = start; |
5598 | while (! EQ (tem, window)) | |
5599 | { | |
4554d213 | 5600 | Lisp_Object next1 = XWINDOW (tem)->next; |
dc1ab1ee | 5601 | delete_window (tem); |
4554d213 | 5602 | tem = next1; |
daf516d3 RS |
5603 | } |
5604 | } | |
7ab12479 | 5605 | else |
233a4a2c GM |
5606 | { |
5607 | /* Otherwise, make delta1 just right so that if we add | |
5608 | delta1 lines to this window and to the parent, and then | |
5609 | shrink the parent back to its original size, the new | |
5610 | proportional size of this window will increase by delta. | |
5611 | ||
5612 | The function size_window will compute the new height h' | |
5613 | of the window from delta1 as: | |
177c0ea7 | 5614 | |
233a4a2c GM |
5615 | e = delta1/n |
5616 | x = delta1 - delta1/n * n for the 1st resizable child | |
5617 | h' = h + e + x | |
5618 | ||
5619 | where n is the number of children that can be resized. | |
5620 | We can ignore x by choosing a delta1 that is a multiple of | |
5621 | n. We want the height of this window to come out as | |
177c0ea7 | 5622 | |
233a4a2c GM |
5623 | h' = h + delta |
5624 | ||
5625 | So, delta1 must be | |
177c0ea7 | 5626 | |
233a4a2c GM |
5627 | h + e = h + delta |
5628 | delta1/n = delta | |
5629 | delta1 = n * delta. | |
5630 | ||
a5731348 | 5631 | The number of children n equals the number of resizable |
233a4a2c | 5632 | children of this window + 1 because we know window itself |
04bf5b65 | 5633 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
5634 | |
5635 | This reasoning is not correct when other windows become too | |
5636 | small and shrink_windows refuses to delete them. Below we | |
5637 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
5638 | |
5639 | struct window *w = XWINDOW (window); | |
5640 | Lisp_Object s; | |
5641 | int n = 1; | |
5642 | ||
9beb8baa | 5643 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 5644 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 5645 | ++n; |
9beb8baa | 5646 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 5647 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
5648 | ++n; |
5649 | ||
5650 | delta1 = n * delta; | |
7ab12479 | 5651 | |
daf516d3 RS |
5652 | /* Add delta1 lines or columns to this window, and to the parent, |
5653 | keeping things consistent while not affecting siblings. */ | |
5654 | XSETINT (CURSIZE (parent), opht + delta1); | |
5655 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
5656 | ||
5657 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
5658 | shrinking this window and siblings proportionately. This |
5659 | brings parent back to correct size. Delta1 was calculated | |
5660 | so this makes this window the desired size, taking it all | |
5661 | out of the siblings. | |
5662 | ||
5663 | Temporarily set resize_proportionally to Qt to assure that, | |
5664 | if necessary, shrink_windows deletes smaller windows rather | |
5665 | than shrink this window. */ | |
5666 | w->resize_proportionally = Qt; | |
daf516d3 | 5667 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 5668 | w->resize_proportionally = Qnil; |
daf516d3 | 5669 | } |
7ab12479 JB |
5670 | } |
5671 | ||
d834a2e9 | 5672 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 5673 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
5674 | |
5675 | /* Adjust glyph matrices. */ | |
5676 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 5677 | } |
c1636aa6 | 5678 | |
0d384044 RS |
5679 | |
5680 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
5681 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
5682 | zero means adjust the height, moving the bottom edge. | |
5683 | ||
5684 | Following siblings of the selected window are resized to fulfill | |
5685 | the size request. If they become too small in the process, they | |
5686 | are not deleted; instead, we signal an error. */ | |
5687 | ||
5688 | static void | |
971de7fb | 5689 | adjust_window_trailing_edge (Lisp_Object window, int delta, int horiz_flag) |
0d384044 RS |
5690 | { |
5691 | Lisp_Object parent, child; | |
5692 | struct window *p; | |
5693 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
5694 | int delcount = window_deletion_count; | |
5695 | ||
0d384044 RS |
5696 | CHECK_WINDOW (window); |
5697 | ||
5698 | /* Give up if this window cannot be resized. */ | |
5699 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
5700 | error ("Window is not resizable"); | |
5701 | ||
5702 | while (1) | |
5703 | { | |
bd99e242 RS |
5704 | Lisp_Object first_parallel = Qnil; |
5705 | ||
c32de52a | 5706 | if (NILP (window)) |
0d384044 | 5707 | { |
5fe0b054 RS |
5708 | /* This happens if WINDOW on the previous iteration was |
5709 | at top level of the window tree. */ | |
0d384044 | 5710 | Fset_window_configuration (old_config); |
c32de52a | 5711 | error ("Specified window edge is fixed"); |
0d384044 RS |
5712 | } |
5713 | ||
c32de52a RS |
5714 | p = XWINDOW (window); |
5715 | parent = p->parent; | |
5716 | ||
bd99e242 RS |
5717 | /* See if this level has windows in parallel in the specified |
5718 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
5719 | if (horiz_flag) | |
5720 | { | |
5721 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
5722 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
5723 | else if (NILP (parent) && !NILP (p->next)) |
5724 | { | |
5725 | /* Handle the vertical chain of main window and minibuffer | |
5726 | which has no parent. */ | |
5727 | first_parallel = window; | |
5728 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
5729 | first_parallel = XWINDOW (first_parallel)->prev; | |
5730 | } | |
bd99e242 RS |
5731 | } |
5732 | else | |
5733 | { | |
5734 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
5735 | first_parallel = XWINDOW (parent)->hchild; | |
5736 | } | |
5737 | ||
c32de52a | 5738 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
5739 | and this window is the last one, and there is no higher level, |
5740 | its trailing edge is fixed. */ | |
5741 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
5742 | && NILP (parent)) | |
c32de52a RS |
5743 | { |
5744 | Fset_window_configuration (old_config); | |
5745 | error ("Specified window edge is fixed"); | |
5746 | } | |
5747 | ||
0d384044 RS |
5748 | /* Don't make this window too small. */ |
5749 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 5750 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
5751 | { |
5752 | Fset_window_configuration (old_config); | |
5753 | error ("Cannot adjust window size as specified"); | |
5754 | } | |
5755 | ||
5756 | /* Clear out some redisplay caches. */ | |
5757 | XSETFASTINT (p->last_modified, 0); | |
5758 | XSETFASTINT (p->last_overlay_modified, 0); | |
5759 | ||
5760 | /* Adjust this window's edge. */ | |
5761 | XSETINT (CURSIZE (window), | |
5762 | XINT (CURSIZE (window)) + delta); | |
5763 | ||
5764 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
5765 | make them smaller, and exit the loop. |
5766 | ||
0d384044 RS |
5767 | (If we reach the top of the tree and can never do this, |
5768 | we will fail and report an error, above.) */ | |
bd99e242 | 5769 | if (NILP (first_parallel)) |
0d384044 | 5770 | { |
c32de52a | 5771 | if (!NILP (p->next)) |
0d384044 | 5772 | { |
e99c7521 JD |
5773 | /* This may happen for the minibuffer. In that case |
5774 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 5775 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
5776 | { |
5777 | Fset_window_configuration (old_config); | |
5778 | error ("Cannot adjust window size as specified"); | |
5779 | } | |
5780 | ||
0d384044 RS |
5781 | XSETINT (CURBEG (p->next), |
5782 | XINT (CURBEG (p->next)) + delta); | |
5783 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 5784 | horiz_flag, 0, 1, 0); |
0d384044 RS |
5785 | break; |
5786 | } | |
5787 | } | |
5788 | else | |
5789 | /* Here we have a chain of parallel siblings, in the other dimension. | |
5790 | Change the size of the other siblings. */ | |
bd99e242 | 5791 | for (child = first_parallel; |
0d384044 RS |
5792 | ! NILP (child); |
5793 | child = XWINDOW (child)->next) | |
5794 | if (! EQ (child, window)) | |
5795 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 5796 | horiz_flag, 0, 0, 1); |
0d384044 RS |
5797 | |
5798 | window = parent; | |
5799 | } | |
5800 | ||
5801 | /* If we made a window so small it got deleted, | |
5802 | we failed. Report failure. */ | |
5803 | if (delcount != window_deletion_count) | |
5804 | { | |
5805 | Fset_window_configuration (old_config); | |
5806 | error ("Cannot adjust window size as specified"); | |
5807 | } | |
5808 | ||
5809 | /* Adjust glyph matrices. */ | |
5810 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
5811 | } | |
5812 | ||
7ab12479 JB |
5813 | #undef CURBEG |
5814 | #undef CURSIZE | |
5815 | ||
0d384044 RS |
5816 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
5817 | Sadjust_window_trailing_edge, 3, 3, 0, | |
5818 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 5819 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
5820 | Otherwise, adjust the height, moving the bottom edge. |
5821 | ||
5822 | Following siblings of the selected window are resized to fulfill | |
5823 | the size request. If they become too small in the process, they | |
5824 | are not deleted; instead, we signal an error. */) | |
5842a27b | 5825 | (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal) |
0d384044 RS |
5826 | { |
5827 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
5828 | if (NILP (window)) |
5829 | window = selected_window; | |
0d384044 RS |
5830 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
5831 | ||
eeca6f6f SM |
5832 | run_window_configuration_change_hook |
5833 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
5834 | |
5835 | return Qnil; | |
5836 | } | |
5837 | ||
5500c422 | 5838 | |
f984d4fc GM |
5839 | \f |
5840 | /*********************************************************************** | |
5841 | Resizing Mini-Windows | |
5842 | ***********************************************************************/ | |
5843 | ||
f57e2426 | 5844 | static void shrink_window_lowest_first (struct window *, int); |
f984d4fc | 5845 | |
43b4a21f GM |
5846 | enum save_restore_action |
5847 | { | |
5848 | CHECK_ORIG_SIZES, | |
5849 | SAVE_ORIG_SIZES, | |
5850 | RESTORE_ORIG_SIZES | |
5851 | }; | |
5852 | ||
f57e2426 J |
5853 | static int save_restore_orig_size (struct window *, |
5854 | enum save_restore_action); | |
f984d4fc GM |
5855 | |
5856 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
5857 | from lowest windows first. */ | |
5858 | ||
5859 | static void | |
971de7fb | 5860 | shrink_window_lowest_first (struct window *w, int height) |
f984d4fc GM |
5861 | { |
5862 | struct window *c; | |
5863 | Lisp_Object child; | |
5864 | int old_height; | |
5865 | ||
5866 | xassert (!MINI_WINDOW_P (w)); | |
5867 | ||
5868 | /* Set redisplay hints. */ | |
5869 | XSETFASTINT (w->last_modified, 0); | |
5870 | XSETFASTINT (w->last_overlay_modified, 0); | |
5871 | windows_or_buffers_changed++; | |
5872 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
5873 | ||
949cf20f KS |
5874 | old_height = XFASTINT (w->total_lines); |
5875 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
5876 | |
5877 | if (!NILP (w->hchild)) | |
5878 | { | |
5879 | for (child = w->hchild; !NILP (child); child = c->next) | |
5880 | { | |
5881 | c = XWINDOW (child); | |
949cf20f | 5882 | c->top_line = w->top_line; |
f984d4fc GM |
5883 | shrink_window_lowest_first (c, height); |
5884 | } | |
5885 | } | |
5886 | else if (!NILP (w->vchild)) | |
5887 | { | |
5888 | Lisp_Object last_child; | |
5889 | int delta = old_height - height; | |
5890 | int last_top; | |
6bbd7a29 GM |
5891 | |
5892 | last_child = Qnil; | |
177c0ea7 | 5893 | |
f984d4fc GM |
5894 | /* Find the last child. We are taking space from lowest windows |
5895 | first, so we iterate over children from the last child | |
5896 | backwards. */ | |
9beb8baa | 5897 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
5898 | last_child = child; |
5899 | ||
047aaeb9 | 5900 | /* Size children down to their safe heights. */ |
f984d4fc GM |
5901 | for (child = last_child; delta && !NILP (child); child = c->prev) |
5902 | { | |
5903 | int this_one; | |
177c0ea7 | 5904 | |
f984d4fc | 5905 | c = XWINDOW (child); |
047aaeb9 | 5906 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
5907 | |
5908 | if (this_one > delta) | |
5909 | this_one = delta; | |
5910 | ||
949cf20f | 5911 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
5912 | delta -= this_one; |
5913 | } | |
5914 | ||
5915 | /* Compute new positions. */ | |
949cf20f | 5916 | last_top = XINT (w->top_line); |
f984d4fc GM |
5917 | for (child = w->vchild; !NILP (child); child = c->next) |
5918 | { | |
5919 | c = XWINDOW (child); | |
949cf20f KS |
5920 | c->top_line = make_number (last_top); |
5921 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
5922 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
5923 | } |
5924 | } | |
5925 | } | |
5926 | ||
5927 | ||
43b4a21f GM |
5928 | /* Save, restore, or check positions and sizes in the window tree |
5929 | rooted at W. ACTION says what to do. | |
f984d4fc | 5930 | |
949cf20f KS |
5931 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
5932 | orig_total_lines members are valid for all windows in the window | |
5933 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 5934 | |
43b4a21f | 5935 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 5936 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 5937 | |
949cf20f KS |
5938 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
5939 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
5940 | |
5941 | static int | |
971de7fb | 5942 | save_restore_orig_size (struct window *w, enum save_restore_action action) |
f984d4fc | 5943 | { |
43b4a21f GM |
5944 | int success_p = 1; |
5945 | ||
f984d4fc GM |
5946 | while (w) |
5947 | { | |
5948 | if (!NILP (w->hchild)) | |
43b4a21f GM |
5949 | { |
5950 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
5951 | success_p = 0; | |
5952 | } | |
f984d4fc | 5953 | else if (!NILP (w->vchild)) |
43b4a21f GM |
5954 | { |
5955 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
5956 | success_p = 0; | |
5957 | } | |
177c0ea7 | 5958 | |
43b4a21f | 5959 | switch (action) |
f984d4fc | 5960 | { |
43b4a21f | 5961 | case CHECK_ORIG_SIZES: |
949cf20f | 5962 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
5963 | return 0; |
5964 | break; | |
5965 | ||
5966 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
5967 | w->orig_top_line = w->top_line; |
5968 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
5969 | XSETFASTINT (w->last_modified, 0); |
5970 | XSETFASTINT (w->last_overlay_modified, 0); | |
5971 | break; | |
5972 | ||
5973 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
5974 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
5975 | w->top_line = w->orig_top_line; | |
5976 | w->total_lines = w->orig_total_lines; | |
5977 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
5978 | XSETFASTINT (w->last_modified, 0); |
5979 | XSETFASTINT (w->last_overlay_modified, 0); | |
5980 | break; | |
5981 | ||
5982 | default: | |
5983 | abort (); | |
f984d4fc | 5984 | } |
43b4a21f | 5985 | |
f984d4fc GM |
5986 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
5987 | } | |
43b4a21f GM |
5988 | |
5989 | return success_p; | |
f984d4fc GM |
5990 | } |
5991 | ||
5992 | ||
5993 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
5994 | without deleting other windows. */ | |
5995 | ||
5996 | void | |
971de7fb | 5997 | grow_mini_window (struct window *w, int delta) |
f984d4fc GM |
5998 | { |
5999 | struct frame *f = XFRAME (w->frame); | |
6000 | struct window *root; | |
177c0ea7 | 6001 | |
f984d4fc | 6002 | xassert (MINI_WINDOW_P (w)); |
522d013a JB |
6003 | /* Commenting out the following assertion goes against the stated interface |
6004 | of the function, but it currently does not seem to do anything useful. | |
6005 | See discussion of this issue in the thread for bug#4534. | |
6006 | xassert (delta >= 0); */ | |
177c0ea7 | 6007 | |
f984d4fc GM |
6008 | /* Compute how much we can enlarge the mini-window without deleting |
6009 | other windows. */ | |
6010 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
522d013a | 6011 | if (delta > 0) |
f984d4fc | 6012 | { |
047aaeb9 | 6013 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 6014 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 6015 | /* Note that the root window may already be smaller than |
eafa3196 | 6016 | min_height. */ |
949cf20f | 6017 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 6018 | } |
177c0ea7 | 6019 | |
f984d4fc GM |
6020 | if (delta) |
6021 | { | |
6022 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
6023 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
6024 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
6025 | |
6026 | /* Shrink other windows. */ | |
949cf20f | 6027 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
6028 | |
6029 | /* Grow the mini-window. */ | |
949cf20f KS |
6030 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
6031 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
6032 | XSETFASTINT (w->last_modified, 0); |
6033 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 6034 | |
f984d4fc GM |
6035 | adjust_glyphs (f); |
6036 | } | |
6037 | } | |
6038 | ||
6039 | ||
86c8e823 GM |
6040 | /* Shrink mini-window W. If there is recorded info about window sizes |
6041 | before a call to grow_mini_window, restore recorded window sizes. | |
6042 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
6043 | line. */ | |
f984d4fc GM |
6044 | |
6045 | void | |
971de7fb | 6046 | shrink_mini_window (struct window *w) |
f984d4fc GM |
6047 | { |
6048 | struct frame *f = XFRAME (w->frame); | |
6049 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
6050 | ||
43b4a21f | 6051 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 6052 | { |
43b4a21f | 6053 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
6054 | adjust_glyphs (f); |
6055 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
6056 | windows_or_buffers_changed = 1; | |
6057 | } | |
949cf20f | 6058 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 6059 | { |
0130fe1a GM |
6060 | /* Distribute the additional lines of the mini-window |
6061 | among the other windows. */ | |
86c8e823 GM |
6062 | Lisp_Object window; |
6063 | XSETWINDOW (window, w); | |
56ebfae2 | 6064 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 6065 | } |
f984d4fc GM |
6066 | } |
6067 | ||
6068 | ||
6069 | \f | |
5500c422 GM |
6070 | /* Mark window cursors off for all windows in the window tree rooted |
6071 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
6072 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
6073 | the frame are cleared. */ | |
6074 | ||
6075 | void | |
971de7fb | 6076 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
6077 | { |
6078 | while (w) | |
6079 | { | |
6080 | if (!NILP (w->hchild)) | |
6081 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
6082 | else if (!NILP (w->vchild)) | |
6083 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
6084 | else | |
6085 | w->phys_cursor_on_p = 0; | |
6086 | ||
6087 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6088 | } | |
6089 | } | |
6090 | ||
6091 | ||
e9c195b1 | 6092 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
6093 | |
6094 | int | |
971de7fb | 6095 | window_internal_height (struct window *w) |
7ab12479 | 6096 | { |
949cf20f | 6097 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 6098 | |
e9c195b1 GM |
6099 | if (!MINI_WINDOW_P (w)) |
6100 | { | |
6101 | if (!NILP (w->parent) | |
6102 | || !NILP (w->vchild) | |
6103 | || !NILP (w->hchild) | |
6104 | || !NILP (w->next) | |
6105 | || !NILP (w->prev) | |
6106 | || WINDOW_WANTS_MODELINE_P (w)) | |
6107 | --ht; | |
7ab12479 | 6108 | |
e9c195b1 GM |
6109 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
6110 | --ht; | |
6111 | } | |
7ab12479 JB |
6112 | |
6113 | return ht; | |
6114 | } | |
5500c422 GM |
6115 | \f |
6116 | /************************************************************************ | |
6117 | Window Scrolling | |
6118 | ***********************************************************************/ | |
535e0b8e | 6119 | |
5500c422 | 6120 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 6121 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
6122 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
6123 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
6124 | means don't signal an error if we try to move over BEGV or ZV, | |
6125 | respectively. */ | |
7ab12479 | 6126 | |
101d1605 | 6127 | static void |
971de7fb | 6128 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 6129 | { |
cba59f77 RS |
6130 | immediate_quit = 1; |
6131 | ||
5500c422 GM |
6132 | /* If we must, use the pixel-based version which is much slower than |
6133 | the line-based one but can handle varying line heights. */ | |
6134 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
6135 | window_scroll_pixel_based (window, n, whole, noerror); | |
6136 | else | |
6137 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
6138 | |
6139 | immediate_quit = 0; | |
5500c422 GM |
6140 | } |
6141 | ||
6142 | ||
6143 | /* Implementation of window_scroll that works based on pixel line | |
6144 | heights. See the comment of window_scroll for parameter | |
6145 | descriptions. */ | |
6146 | ||
6147 | static void | |
971de7fb | 6148 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
6149 | { |
6150 | struct it it; | |
6151 | struct window *w = XWINDOW (window); | |
6152 | struct text_pos start; | |
5500c422 | 6153 | int this_scroll_margin; |
9d14503e | 6154 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 6155 | int vscrolled = 0; |
5a857365 | 6156 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
6157 | |
6158 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 6159 | |
5500c422 | 6160 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
6161 | the screen. Allow PT to be partially visible, otherwise |
6162 | something like (scroll-down 1) with PT in the line before | |
6163 | the partially visible one would recenter. */ | |
5a857365 KS |
6164 | |
6165 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
6166 | { |
6167 | /* Move backward half the height of the window. Performance note: | |
6168 | vmotion used here is about 10% faster, but would give wrong | |
6169 | results for variable height lines. */ | |
6170 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
6171 | it.current_y = it.last_visible_y; | |
f204989e | 6172 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 6173 | |
5500c422 GM |
6174 | /* The function move_iterator_vertically may move over more than |
6175 | the specified y-distance. If it->w is small, e.g. a | |
6176 | mini-buffer window, we may end up in front of the window's | |
6177 | display area. This is the case when Start displaying at the | |
6178 | start of the line containing PT in this case. */ | |
6179 | if (it.current_y <= 0) | |
6180 | { | |
6181 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 6182 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
6183 | it.current_y = 0; |
6184 | } | |
6185 | ||
6186 | start = it.current.pos; | |
6187 | } | |
e56263e5 KS |
6188 | else if (auto_window_vscroll_p) |
6189 | { | |
5a857365 | 6190 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
6191 | { |
6192 | int px; | |
6193 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
6194 | if (whole) | |
e856c216 KS |
6195 | dy = max ((window_box_height (w) |
6196 | - next_screen_context_lines * dy), | |
6197 | dy); | |
e56263e5 KS |
6198 | dy *= n; |
6199 | ||
5a857365 | 6200 | if (n < 0) |
e56263e5 | 6201 | { |
5a857365 KS |
6202 | /* Only vscroll backwards if already vscrolled forwards. */ |
6203 | if (w->vscroll < 0 && rtop > 0) | |
6204 | { | |
6205 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
6206 | Fset_window_vscroll (window, make_number (px), Qt); | |
6207 | return; | |
6208 | } | |
e56263e5 | 6209 | } |
5a857365 | 6210 | if (n > 0) |
e56263e5 | 6211 | { |
5a857365 KS |
6212 | /* Do vscroll if already vscrolled or only display line. */ |
6213 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
6214 | { | |
6215 | px = max (0, -w->vscroll + min (rbot, dy)); | |
6216 | Fset_window_vscroll (window, make_number (px), Qt); | |
6217 | return; | |
6218 | } | |
6219 | ||
6220 | /* Maybe modify window start instead of scrolling. */ | |
6221 | if (rbot > 0 || w->vscroll < 0) | |
6222 | { | |
2452438f | 6223 | EMACS_INT spos; |
5a857365 KS |
6224 | |
6225 | Fset_window_vscroll (window, make_number (0), Qt); | |
6226 | /* If there are other text lines above the current row, | |
6227 | move window start to current row. Else to next row. */ | |
6228 | if (rbot > 0) | |
6229 | spos = XINT (Fline_beginning_position (Qnil)); | |
6230 | else | |
6231 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
6232 | set_marker_restricted (w->start, make_number (spos), | |
6233 | w->buffer); | |
6234 | w->start_at_line_beg = Qt; | |
6235 | w->update_mode_line = Qt; | |
6236 | XSETFASTINT (w->last_modified, 0); | |
6237 | XSETFASTINT (w->last_overlay_modified, 0); | |
6238 | /* Set force_start so that redisplay_window will run the | |
6239 | window-scroll-functions. */ | |
6240 | w->force_start = Qt; | |
6241 | return; | |
6242 | } | |
e56263e5 KS |
6243 | } |
6244 | } | |
5a857365 | 6245 | /* Cancel previous vscroll. */ |
e56263e5 KS |
6246 | Fset_window_vscroll (window, make_number (0), Qt); |
6247 | } | |
5500c422 | 6248 | |
d0c38d63 | 6249 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
6250 | point in the same window line as it is now, so get that line. */ |
6251 | if (!NILP (Vscroll_preserve_screen_position)) | |
6252 | { | |
c525d842 | 6253 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
6254 | calls to scroll-up, scroll-down and other commands that |
6255 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
6256 | possibility of point becoming "stuck" on a tall line when |
6257 | scrolling by one line. */ | |
66fe93d1 | 6258 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
6259 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
6260 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
6261 | { |
6262 | start_display (&it, w, start); | |
6263 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 6264 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 6265 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 6266 | } |
5500c422 GM |
6267 | } |
6268 | else | |
c876b227 SM |
6269 | window_scroll_pixel_based_preserve_y |
6270 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
6271 | |
6272 | /* Move iterator it from start the specified distance forward or | |
6273 | backward. The result is the new window start. */ | |
6274 | start_display (&it, w, start); | |
6275 | if (whole) | |
6276 | { | |
2452438f | 6277 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
6278 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
6279 | dy = max ((window_box_height (w) | |
6280 | - next_screen_context_lines * dy), | |
6281 | dy) * n; | |
d72340d4 GM |
6282 | |
6283 | /* Note that move_it_vertically always moves the iterator to the | |
6284 | start of a line. So, if the last line doesn't have a newline, | |
6285 | we would end up at the start of the line ending at ZV. */ | |
6286 | if (dy <= 0) | |
e856c216 KS |
6287 | { |
6288 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 6289 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
6290 | looking at an image that is taller that the window height. */ |
6291 | while (start_pos == IT_CHARPOS (it) | |
6292 | && start_pos > BEGV) | |
e4cc2dfc | 6293 | move_it_by_lines (&it, -1); |
e856c216 | 6294 | } |
d72340d4 | 6295 | else if (dy > 0) |
bed83ee4 | 6296 | { |
bed83ee4 KS |
6297 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
6298 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 6299 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
6300 | looking at an image that is taller that the window height. */ |
6301 | while (start_pos == IT_CHARPOS (it) | |
6302 | && start_pos < ZV) | |
e4cc2dfc | 6303 | move_it_by_lines (&it, 1); |
bed83ee4 | 6304 | } |
5500c422 GM |
6305 | } |
6306 | else | |
e4cc2dfc | 6307 | move_it_by_lines (&it, n); |
5500c422 | 6308 | |
96ae58c8 RS |
6309 | /* We failed if we find ZV is already on the screen (scrolling up, |
6310 | means there's nothing past the end), or if we can't start any | |
6311 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 6312 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 6313 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 6314 | { |
5cdb3cf3 MB |
6315 | if (IT_CHARPOS (it) == ZV) |
6316 | { | |
07ce8b53 RS |
6317 | if (it.current_y < it.last_visible_y |
6318 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 6319 | > it.last_visible_y)) |
a74eca50 GM |
6320 | { |
6321 | /* The last line was only partially visible, make it fully | |
6322 | visible. */ | |
6323 | w->vscroll = (it.last_visible_y | |
6324 | - it.current_y + it.max_ascent + it.max_descent); | |
6325 | adjust_glyphs (it.f); | |
6326 | } | |
5cdb3cf3 MB |
6327 | else if (noerror) |
6328 | return; | |
cf402f3f | 6329 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 6330 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 6331 | else |
ba96a5cf | 6332 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 6333 | } |
5500c422 | 6334 | else |
5cdb3cf3 MB |
6335 | { |
6336 | if (w->vscroll != 0) | |
6337 | /* The first line was only partially visible, make it fully | |
6338 | visible. */ | |
6339 | w->vscroll = 0; | |
6340 | else if (noerror) | |
6341 | return; | |
6342 | else | |
ba96a5cf | 6343 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
6344 | } |
6345 | ||
6346 | /* If control gets here, then we vscrolled. */ | |
6347 | ||
6348 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6349 | ||
6350 | /* Don't try to change the window start below. */ | |
6351 | vscrolled = 1; | |
5500c422 GM |
6352 | } |
6353 | ||
5cdb3cf3 MB |
6354 | if (! vscrolled) |
6355 | { | |
2452438f EZ |
6356 | EMACS_INT pos = IT_CHARPOS (it); |
6357 | EMACS_INT bytepos; | |
e68def1e AS |
6358 | |
6359 | /* If in the middle of a multi-glyph character move forward to | |
6360 | the next character. */ | |
6361 | if (in_display_vector_p (&it)) | |
6362 | { | |
6363 | ++pos; | |
6364 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
6365 | } | |
6366 | ||
5cdb3cf3 | 6367 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 6368 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 6369 | w->buffer); |
dad67609 RS |
6370 | bytepos = XMARKER (w->start)->bytepos; |
6371 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
6372 | ? Qt : Qnil); | |
5cdb3cf3 MB |
6373 | w->update_mode_line = Qt; |
6374 | XSETFASTINT (w->last_modified, 0); | |
6375 | XSETFASTINT (w->last_overlay_modified, 0); | |
6376 | /* Set force_start so that redisplay_window will run the | |
6377 | window-scroll-functions. */ | |
6378 | w->force_start = Qt; | |
6379 | } | |
177c0ea7 | 6380 | |
dc297565 RS |
6381 | /* The rest of this function uses current_y in a nonstandard way, |
6382 | not including the height of the header line if any. */ | |
5500c422 | 6383 | it.current_y = it.vpos = 0; |
177c0ea7 | 6384 | |
940f53e5 RS |
6385 | /* Move PT out of scroll margins. |
6386 | This code wants current_y to be zero at the window start position | |
6387 | even if there is a header line. */ | |
6388 | this_scroll_margin = max (0, scroll_margin); | |
6389 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
6390 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
6391 | ||
6392 | if (n > 0) | |
5500c422 | 6393 | { |
940f53e5 RS |
6394 | /* We moved the window start towards ZV, so PT may be now |
6395 | in the scroll margin at the top. */ | |
6396 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
6397 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
6398 | && (NILP (Vscroll_preserve_screen_position) | |
6399 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
6400 | /* We found PT at a legitimate height. Leave it alone. */ |
6401 | ; | |
66fe93d1 | 6402 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 6403 | { |
fa3c3426 RS |
6404 | /* If we have a header line, take account of it. |
6405 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
6406 | move_it_to (&it, -1, |
6407 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
6408 | window_scroll_pixel_based_preserve_y |
6409 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 6410 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
6411 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
6412 | } | |
6413 | else | |
5500c422 | 6414 | { |
5500c422 | 6415 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
6416 | { |
6417 | int prev = it.current_y; | |
e4cc2dfc | 6418 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
6419 | if (prev == it.current_y) |
6420 | break; | |
6421 | } | |
5500c422 GM |
6422 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
6423 | } | |
940f53e5 RS |
6424 | } |
6425 | else if (n < 0) | |
6426 | { | |
2452438f | 6427 | EMACS_INT charpos, bytepos; |
aed328bf | 6428 | int partial_p; |
940f53e5 | 6429 | |
66fe93d1 LT |
6430 | /* Save our position, for the |
6431 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
6432 | charpos = IT_CHARPOS (it); |
6433 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 6434 | |
940f53e5 RS |
6435 | /* We moved the window start towards BEGV, so PT may be now |
6436 | in the scroll margin at the bottom. */ | |
6437 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
6438 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
6439 | - this_scroll_margin - 1), | |
6440 | -1, | |
940f53e5 RS |
6441 | MOVE_TO_POS | MOVE_TO_Y); |
6442 | ||
aed328bf KS |
6443 | /* Save our position, in case it's correct. */ |
6444 | charpos = IT_CHARPOS (it); | |
6445 | bytepos = IT_BYTEPOS (it); | |
6446 | ||
6447 | /* See if point is on a partially visible line at the end. */ | |
6448 | if (it.what == IT_EOB) | |
6449 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
6450 | else | |
6451 | { | |
e4cc2dfc | 6452 | move_it_by_lines (&it, 1); |
aed328bf KS |
6453 | partial_p = it.current_y > it.last_visible_y; |
6454 | } | |
6455 | ||
bdf4ec93 RS |
6456 | if (charpos == PT && !partial_p |
6457 | && (NILP (Vscroll_preserve_screen_position) | |
6458 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
6459 | /* We found PT before we found the display margin, so PT is ok. */ |
6460 | ; | |
66fe93d1 | 6461 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
6462 | { |
6463 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
6464 | start_display (&it, w, start); | |
c525d842 CY |
6465 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
6466 | here because we called start_display again and did not | |
6467 | alter it.current_y this time. */ | |
c876b227 SM |
6468 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
6469 | window_scroll_pixel_based_preserve_y, -1, | |
6470 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
6471 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
6472 | } | |
6473 | else | |
6474 | { | |
aed328bf | 6475 | if (partial_p) |
5cdb3cf3 MB |
6476 | /* The last line was only partially visible, so back up two |
6477 | lines to make sure we're on a fully visible line. */ | |
6478 | { | |
e4cc2dfc | 6479 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
6480 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
6481 | } | |
6482 | else | |
6483 | /* No, the position we saved is OK, so use it. */ | |
6484 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
6485 | } |
6486 | } | |
6487 | } | |
6488 | ||
6489 | ||
6490 | /* Implementation of window_scroll that works based on screen lines. | |
6491 | See the comment of window_scroll for parameter descriptions. */ | |
6492 | ||
6493 | static void | |
971de7fb | 6494 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
6495 | { |
6496 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
6497 | /* Fvertical_motion enters redisplay, which can trigger |
6498 | fontification, which in turn can modify buffer text (e.g., if the | |
6499 | fontification functions replace escape sequences with faces, as | |
6500 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
6501 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
6502 | Lisp_Object opoint_marker = Fpoint_marker (); | |
2452438f | 6503 | register EMACS_INT pos, pos_byte; |
7ab12479 JB |
6504 | register int ht = window_internal_height (w); |
6505 | register Lisp_Object tem; | |
6506 | int lose; | |
5500c422 | 6507 | Lisp_Object bolp; |
2452438f | 6508 | EMACS_INT startpos; |
c876b227 | 6509 | Lisp_Object original_pos = Qnil; |
101d1605 | 6510 | |
d4e7cf01 GM |
6511 | /* If scrolling screen-fulls, compute the number of lines to |
6512 | scroll from the window's height. */ | |
6513 | if (whole) | |
6514 | n *= max (1, ht - next_screen_context_lines); | |
6515 | ||
101d1605 RS |
6516 | startpos = marker_position (w->start); |
6517 | ||
c876b227 SM |
6518 | if (!NILP (Vscroll_preserve_screen_position)) |
6519 | { | |
6520 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
6521 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
6522 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
6523 | { |
6524 | struct position posit | |
6525 | = *compute_motion (startpos, 0, 0, 0, | |
6526 | PT, ht, 0, | |
6527 | -1, XINT (w->hscroll), | |
6528 | 0, w); | |
6529 | window_scroll_preserve_vpos = posit.vpos; | |
6530 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
6531 | } | |
6532 | ||
6533 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
6534 | make_number (window_scroll_preserve_vpos)); | |
6535 | } | |
0a1f771a | 6536 | |
d834a2e9 | 6537 | XSETFASTINT (tem, PT); |
6ffdb539 | 6538 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 6539 | |
265a9e55 | 6540 | if (NILP (tem)) |
7ab12479 | 6541 | { |
cd2be1dd | 6542 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 6543 | startpos = PT; |
7ab12479 JB |
6544 | } |
6545 | ||
345d45b2 | 6546 | SET_PT (startpos); |
5ce7b543 | 6547 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 6548 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 6549 | pos = PT; |
b73ea88e | 6550 | pos_byte = PT_BYTE; |
7ab12479 | 6551 | bolp = Fbolp (); |
03ab8921 EZ |
6552 | SET_PT_BOTH (marker_position (opoint_marker), |
6553 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
6554 | |
6555 | if (lose) | |
f8026fd8 JB |
6556 | { |
6557 | if (noerror) | |
6558 | return; | |
6559 | else | |
ba96a5cf | 6560 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 6561 | } |
7ab12479 JB |
6562 | |
6563 | if (pos < ZV) | |
7ab12479 | 6564 | { |
0c7da84e RS |
6565 | int this_scroll_margin = scroll_margin; |
6566 | ||
6567 | /* Don't use a scroll margin that is negative or too large. */ | |
6568 | if (this_scroll_margin < 0) | |
6569 | this_scroll_margin = 0; | |
6570 | ||
949cf20f KS |
6571 | if (XINT (w->total_lines) < 4 * scroll_margin) |
6572 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 6573 | |
b73ea88e | 6574 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
6575 | w->start_at_line_beg = bolp; |
6576 | w->update_mode_line = Qt; | |
d834a2e9 | 6577 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6578 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
6579 | /* Set force_start so that redisplay_window will run |
6580 | the window-scroll-functions. */ | |
6581 | w->force_start = Qt; | |
0c7da84e | 6582 | |
bdf4ec93 RS |
6583 | if (!NILP (Vscroll_preserve_screen_position) |
6584 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 6585 | { |
b73ea88e | 6586 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 6587 | Fvertical_motion (original_pos, window); |
0c7da84e | 6588 | } |
101d1605 RS |
6589 | /* If we scrolled forward, put point enough lines down |
6590 | that it is outside the scroll margin. */ | |
6591 | else if (n > 0) | |
0c7da84e | 6592 | { |
101d1605 RS |
6593 | int top_margin; |
6594 | ||
6595 | if (this_scroll_margin > 0) | |
6596 | { | |
b73ea88e | 6597 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
6598 | Fvertical_motion (make_number (this_scroll_margin), window); |
6599 | top_margin = PT; | |
6600 | } | |
6601 | else | |
6602 | top_margin = pos; | |
6603 | ||
03ab8921 EZ |
6604 | if (top_margin <= marker_position (opoint_marker)) |
6605 | SET_PT_BOTH (marker_position (opoint_marker), | |
6606 | marker_byte_position (opoint_marker)); | |
5500c422 | 6607 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 6608 | { |
b73ea88e | 6609 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 6610 | Fvertical_motion (original_pos, window); |
101d1605 | 6611 | } |
9317a85d | 6612 | else |
335406fc | 6613 | SET_PT (top_margin); |
0c7da84e | 6614 | } |
101d1605 | 6615 | else if (n < 0) |
7ab12479 | 6616 | { |
101d1605 RS |
6617 | int bottom_margin; |
6618 | ||
0c7da84e RS |
6619 | /* If we scrolled backward, put point near the end of the window |
6620 | but not within the scroll margin. */ | |
b73ea88e | 6621 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 6622 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
6623 | if (XFASTINT (tem) == ht - this_scroll_margin) |
6624 | bottom_margin = PT; | |
6625 | else | |
6626 | bottom_margin = PT + 1; | |
6627 | ||
03ab8921 EZ |
6628 | if (bottom_margin > marker_position (opoint_marker)) |
6629 | SET_PT_BOTH (marker_position (opoint_marker), | |
6630 | marker_byte_position (opoint_marker)); | |
7ab12479 | 6631 | else |
101d1605 | 6632 | { |
5500c422 | 6633 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 6634 | { |
b73ea88e | 6635 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 6636 | Fvertical_motion (original_pos, window); |
9317a85d RS |
6637 | } |
6638 | else | |
6639 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 6640 | } |
7ab12479 JB |
6641 | } |
6642 | } | |
6643 | else | |
f8026fd8 JB |
6644 | { |
6645 | if (noerror) | |
6646 | return; | |
6647 | else | |
ba96a5cf | 6648 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 6649 | } |
7ab12479 | 6650 | } |
5500c422 GM |
6651 | |
6652 | ||
6653 | /* Scroll selected_window up or down. If N is nil, scroll a | |
6654 | screen-full which is defined as the height of the window minus | |
6655 | next_screen_context_lines. If N is the symbol `-', scroll. | |
6656 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
6657 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
6658 | |
6659 | static void | |
971de7fb | 6660 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 6661 | { |
331379bf | 6662 | int count = SPECPDL_INDEX (); |
7ab12479 | 6663 | |
1ea40aa2 | 6664 | xassert (eabs (direction) == 1); |
5500c422 GM |
6665 | |
6666 | /* If selected window's buffer isn't current, make it current for | |
6667 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 6668 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
6669 | { |
6670 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
6671 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
6672 | |
6673 | /* Make redisplay consider other windows than just selected_window. */ | |
6674 | ++windows_or_buffers_changed; | |
95605e15 | 6675 | } |
7ab12479 | 6676 | |
265a9e55 | 6677 | if (NILP (n)) |
d4e7cf01 | 6678 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 6679 | else if (EQ (n, Qminus)) |
d4e7cf01 | 6680 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
6681 | else |
6682 | { | |
6683 | n = Fprefix_numeric_value (n); | |
101d1605 | 6684 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 6685 | } |
95605e15 JB |
6686 | |
6687 | unbind_to (count, Qnil); | |
7ab12479 JB |
6688 | } |
6689 | ||
e0965597 | 6690 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 6691 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 6692 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
6693 | A near full screen is `next-screen-context-lines' less than a full screen. |
6694 | Negative ARG means scroll downward. | |
6695 | If ARG is the atom `-', scroll downward by nearly full screen. | |
6696 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 6697 | (Lisp_Object arg) |
7ab12479 | 6698 | { |
413430c5 | 6699 | scroll_command (arg, 1); |
7ab12479 JB |
6700 | return Qnil; |
6701 | } | |
6702 | ||
e0965597 | 6703 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 6704 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 6705 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
6706 | A near full screen is `next-screen-context-lines' less than a full screen. |
6707 | Negative ARG means scroll upward. | |
6708 | If ARG is the atom `-', scroll upward by nearly full screen. | |
6709 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 6710 | (Lisp_Object arg) |
7ab12479 | 6711 | { |
413430c5 | 6712 | scroll_command (arg, -1); |
7ab12479 JB |
6713 | return Qnil; |
6714 | } | |
ccd0664b RS |
6715 | \f |
6716 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 6717 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 6718 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
6719 | showing that buffer is used. |
6720 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
6721 | specifies the window. This takes precedence over | |
6722 | `other-window-scroll-buffer'. */) | |
5842a27b | 6723 | (void) |
7ab12479 | 6724 | { |
ccd0664b | 6725 | Lisp_Object window; |
7ab12479 JB |
6726 | |
6727 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 6728 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
6729 | window = Vminibuf_scroll_window; |
6730 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 6731 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
6732 | { |
6733 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 6734 | if (NILP (window)) |
87478b52 | 6735 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
6736 | } |
6737 | else | |
dbc4e1c1 JB |
6738 | { |
6739 | /* Nothing specified; look for a neighboring window on the same | |
6740 | frame. */ | |
6741 | window = Fnext_window (selected_window, Qnil, Qnil); | |
6742 | ||
6743 | if (EQ (window, selected_window)) | |
6744 | /* That didn't get us anywhere; look for a window on another | |
6745 | visible frame. */ | |
6746 | do | |
6747 | window = Fnext_window (window, Qnil, Qt); | |
6748 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
6749 | && ! EQ (window, selected_window)); | |
6750 | } | |
6751 | ||
b7826503 | 6752 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
6753 | |
6754 | if (EQ (window, selected_window)) | |
6755 | error ("There is no other window"); | |
6756 | ||
ccd0664b RS |
6757 | return window; |
6758 | } | |
6759 | ||
6760 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
6761 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
6762 | A near full screen is `next-screen-context-lines' less than a full screen. | |
6763 | The next window is the one below the current one; or the one at the top | |
6764 | if the current one is at the bottom. Negative ARG means scroll downward. | |
6765 | If ARG is the atom `-', scroll downward by nearly full screen. | |
6766 | When calling from a program, supply as argument a number, nil, or `-'. | |
6767 | ||
fdb82f93 | 6768 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
6769 | showing that buffer, popping the buffer up if necessary. |
6770 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
6771 | specifies the window to scroll. This takes precedence over | |
6772 | `other-window-scroll-buffer'. */) | |
5842a27b | 6773 | (Lisp_Object arg) |
ccd0664b | 6774 | { |
d4e7cf01 GM |
6775 | Lisp_Object window; |
6776 | struct window *w; | |
331379bf | 6777 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
6778 | |
6779 | window = Fother_window_for_scrolling (); | |
7ab12479 | 6780 | w = XWINDOW (window); |
7ab12479 JB |
6781 | |
6782 | /* Don't screw up if window_scroll gets an error. */ | |
6783 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 6784 | ++windows_or_buffers_changed; |
7ab12479 JB |
6785 | |
6786 | Fset_buffer (w->buffer); | |
6787 | SET_PT (marker_position (w->pointm)); | |
6788 | ||
413430c5 | 6789 | if (NILP (arg)) |
d4e7cf01 | 6790 | window_scroll (window, 1, 1, 1); |
413430c5 | 6791 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 6792 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
6793 | else |
6794 | { | |
413430c5 EN |
6795 | if (CONSP (arg)) |
6796 | arg = Fcar (arg); | |
b7826503 | 6797 | CHECK_NUMBER (arg); |
101d1605 | 6798 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
6799 | } |
6800 | ||
b73ea88e | 6801 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 6802 | unbind_to (count, Qnil); |
7ab12479 JB |
6803 | |
6804 | return Qnil; | |
6805 | } | |
6806 | \f | |
e0965597 | 6807 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 6808 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
6809 | Default for ARG is window width minus 2. |
6810 | Value is the total amount of leftward horizontal scrolling in | |
6811 | effect after the change. | |
23fe745a | 6812 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 6813 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 6814 | will not scroll a window to a column less than the value returned |
dc297565 | 6815 | by this function. This happens in an interactive call. */) |
5842a27b | 6816 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 6817 | { |
c67fa410 GM |
6818 | Lisp_Object result; |
6819 | int hscroll; | |
6820 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 6821 | |
265a9e55 | 6822 | if (NILP (arg)) |
abde8f8c | 6823 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
6824 | else |
6825 | arg = Fprefix_numeric_value (arg); | |
6826 | ||
c67fa410 GM |
6827 | hscroll = XINT (w->hscroll) + XINT (arg); |
6828 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
6829 | ||
dc297565 | 6830 | if (!NILP (set_minimum)) |
c67fa410 GM |
6831 | w->min_hscroll = w->hscroll; |
6832 | ||
6833 | return result; | |
7ab12479 JB |
6834 | } |
6835 | ||
e0965597 | 6836 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 6837 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
6838 | Default for ARG is window width minus 2. |
6839 | Value is the total amount of leftward horizontal scrolling in | |
6840 | effect after the change. | |
23fe745a | 6841 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 6842 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 6843 | will not scroll a window to a column less than the value returned |
dc297565 | 6844 | by this function. This happens in an interactive call. */) |
5842a27b | 6845 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 6846 | { |
c67fa410 GM |
6847 | Lisp_Object result; |
6848 | int hscroll; | |
6849 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 6850 | |
265a9e55 | 6851 | if (NILP (arg)) |
abde8f8c | 6852 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
6853 | else |
6854 | arg = Fprefix_numeric_value (arg); | |
6855 | ||
c67fa410 GM |
6856 | hscroll = XINT (w->hscroll) - XINT (arg); |
6857 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 6858 | |
dc297565 | 6859 | if (!NILP (set_minimum)) |
c67fa410 GM |
6860 | w->min_hscroll = w->hscroll; |
6861 | ||
6862 | return result; | |
7ab12479 JB |
6863 | } |
6864 | ||
fa832261 KS |
6865 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
6866 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 6867 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 6868 | (void) |
fa832261 KS |
6869 | { |
6870 | if (minibuf_level > 0 | |
6871 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
6872 | && WINDOW_LIVE_P (minibuf_selected_window)) |
6873 | return minibuf_selected_window; | |
6874 | ||
6875 | return Qnil; | |
6876 | } | |
6877 | ||
12c8b416 GM |
6878 | /* Value is the number of lines actually displayed in window W, |
6879 | as opposed to its height. */ | |
6880 | ||
6881 | static int | |
971de7fb | 6882 | displayed_window_lines (struct window *w) |
12c8b416 GM |
6883 | { |
6884 | struct it it; | |
6885 | struct text_pos start; | |
6886 | int height = window_box_height (w); | |
6887 | struct buffer *old_buffer; | |
6888 | int bottom_y; | |
6889 | ||
6890 | if (XBUFFER (w->buffer) != current_buffer) | |
6891 | { | |
6892 | old_buffer = current_buffer; | |
6893 | set_buffer_internal (XBUFFER (w->buffer)); | |
6894 | } | |
6895 | else | |
6896 | old_buffer = NULL; | |
6897 | ||
521b203e GM |
6898 | /* In case W->start is out of the accessible range, do something |
6899 | reasonable. This happens in Info mode when Info-scroll-down | |
6900 | calls (recenter -1) while W->start is 1. */ | |
6901 | if (XMARKER (w->start)->charpos < BEGV) | |
6902 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
6903 | else if (XMARKER (w->start)->charpos > ZV) | |
6904 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
6905 | else | |
6906 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
6907 | ||
12c8b416 GM |
6908 | start_display (&it, w, start); |
6909 | move_it_vertically (&it, height); | |
c8bc6f65 | 6910 | bottom_y = line_bottom_y (&it); |
12c8b416 | 6911 | |
1de65f51 RS |
6912 | /* rms: On a non-window display, |
6913 | the value of it.vpos at the bottom of the screen | |
6914 | seems to be 1 larger than window_box_height (w). | |
6915 | This kludge fixes a bug whereby (move-to-window-line -1) | |
6916 | when ZV is on the last screen line | |
6917 | moves to the previous screen line instead of the last one. */ | |
6918 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
6919 | height++; | |
6920 | ||
12c8b416 GM |
6921 | /* Add in empty lines at the bottom of the window. */ |
6922 | if (bottom_y < height) | |
6923 | { | |
949cf20f | 6924 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 6925 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
6926 | } |
6927 | ||
c8bc6f65 GM |
6928 | if (old_buffer) |
6929 | set_buffer_internal (old_buffer); | |
6930 | ||
12c8b416 GM |
6931 | return it.vpos; |
6932 | } | |
6933 | ||
6934 | ||
a7ca3326 | 6935 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 6936 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 6937 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 6938 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
6939 | bottom of the window. (ARG should be less than the height of the window.) |
6940 | ||
666e158e MB |
6941 | If ARG is omitted or nil, then recenter with point on the middle line of |
6942 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
6943 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
6944 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
6945 | height needed); if `recenter-redisplay' has the special value `tty', | |
6946 | then only tty frame are redrawn. | |
7d1d98ee | 6947 | |
fdb82f93 PJ |
6948 | Just C-u as prefix means put point in the center of the window |
6949 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 6950 | (register Lisp_Object arg) |
7ab12479 | 6951 | { |
6df47b59 | 6952 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
6953 | struct buffer *buf = XBUFFER (w->buffer); |
6954 | struct buffer *obuf = current_buffer; | |
6df47b59 | 6955 | int center_p = 0; |
2452438f | 6956 | EMACS_INT charpos, bytepos; |
d6550a9f | 6957 | int iarg IF_LINT (= 0); |
f6b43440 | 6958 | int this_scroll_margin; |
7ab12479 | 6959 | |
0fa5d25b RS |
6960 | /* If redisplay is suppressed due to an error, try again. */ |
6961 | obuf->display_error_modiff = 0; | |
6962 | ||
413430c5 | 6963 | if (NILP (arg)) |
7ab12479 | 6964 | { |
666e158e MB |
6965 | if (!NILP (Vrecenter_redisplay) |
6966 | && (!EQ (Vrecenter_redisplay, Qtty) | |
6967 | || !NILP (Ftty_type (selected_frame)))) | |
6968 | { | |
6969 | int i; | |
f02d6d5c | 6970 | |
666e158e MB |
6971 | /* Invalidate pixel data calculated for all compositions. */ |
6972 | for (i = 0; i < n_compositions; i++) | |
6973 | composition_table[i]->font = NULL; | |
7ab12479 | 6974 | |
666e158e MB |
6975 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
6976 | ||
6977 | Fredraw_frame (WINDOW_FRAME (w)); | |
6978 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6979 | } | |
7d1d98ee | 6980 | |
6df47b59 | 6981 | center_p = 1; |
7ab12479 | 6982 | } |
413430c5 | 6983 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 6984 | center_p = 1; |
7ab12479 JB |
6985 | else |
6986 | { | |
413430c5 | 6987 | arg = Fprefix_numeric_value (arg); |
b7826503 | 6988 | CHECK_NUMBER (arg); |
ae12ecd7 | 6989 | iarg = XINT (arg); |
7ab12479 JB |
6990 | } |
6991 | ||
478292ed | 6992 | set_buffer_internal (buf); |
7ab12479 | 6993 | |
f6b43440 RS |
6994 | /* Do this after making BUF current |
6995 | in case scroll_margin is buffer-local. */ | |
6996 | this_scroll_margin = max (0, scroll_margin); | |
6997 | this_scroll_margin = min (this_scroll_margin, | |
6998 | XFASTINT (w->total_lines) / 4); | |
6999 | ||
521b203e | 7000 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
7001 | have variable-height lines and centering point on the basis of |
7002 | line counts would lead to strange effects. */ | |
521b203e | 7003 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 7004 | { |
6df47b59 GM |
7005 | if (center_p) |
7006 | { | |
521b203e GM |
7007 | struct it it; |
7008 | struct text_pos pt; | |
177c0ea7 | 7009 | |
521b203e GM |
7010 | SET_TEXT_POS (pt, PT, PT_BYTE); |
7011 | start_display (&it, w, pt); | |
f204989e | 7012 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
7013 | charpos = IT_CHARPOS (it); |
7014 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 7015 | } |
f6b43440 | 7016 | else if (iarg < 0) |
6df47b59 | 7017 | { |
521b203e GM |
7018 | struct it it; |
7019 | struct text_pos pt; | |
f6b43440 | 7020 | int nlines = -iarg; |
f204989e KS |
7021 | int extra_line_spacing; |
7022 | int h = window_box_height (w); | |
177c0ea7 | 7023 | |
f6b43440 RS |
7024 | iarg = - max (-iarg, this_scroll_margin); |
7025 | ||
521b203e GM |
7026 | SET_TEXT_POS (pt, PT, PT_BYTE); |
7027 | start_display (&it, w, pt); | |
f204989e KS |
7028 | |
7029 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 7030 | move_it_by_lines (&it, 0); |
521b203e | 7031 | |
d466fa4d | 7032 | /* The amount of pixels we have to move back is the window |
521b203e GM |
7033 | height minus what's displayed in the line containing PT, |
7034 | and the lines below. */ | |
f204989e KS |
7035 | it.current_y = 0; |
7036 | it.vpos = 0; | |
e4cc2dfc | 7037 | move_it_by_lines (&it, nlines); |
d466fa4d | 7038 | |
f204989e KS |
7039 | if (it.vpos == nlines) |
7040 | h -= it.current_y; | |
7041 | else | |
7042 | { | |
7043 | /* Last line has no newline */ | |
7044 | h -= line_bottom_y (&it); | |
7045 | it.vpos++; | |
7046 | } | |
7047 | ||
7048 | /* Don't reserve space for extra line spacing of last line. */ | |
7049 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
7050 | |
7051 | /* If we can't move down NLINES lines because we hit | |
7052 | the end of the buffer, count in some empty lines. */ | |
7053 | if (it.vpos < nlines) | |
f204989e KS |
7054 | { |
7055 | nlines -= it.vpos; | |
7056 | extra_line_spacing = it.extra_line_spacing; | |
7057 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
7058 | } | |
7059 | if (h <= 0) | |
7060 | return Qnil; | |
201c831a | 7061 | |
f204989e | 7062 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 7063 | start_display (&it, w, pt); |
f204989e KS |
7064 | it.current_y = 0; |
7065 | move_it_vertically_backward (&it, h); | |
7066 | ||
7067 | /* If extra line spacing is present, we may move too far | |
7068 | back. This causes the last line to be only partially | |
7069 | visible (which triggers redisplay to recenter that line | |
7070 | in the middle), so move forward. | |
7071 | But ignore extra line spacing on last line, as it is not | |
7072 | considered to be part of the visible height of the line. | |
7073 | */ | |
7074 | h += extra_line_spacing; | |
7075 | while (-it.current_y > h) | |
e4cc2dfc | 7076 | move_it_by_lines (&it, 1); |
f204989e | 7077 | |
521b203e GM |
7078 | charpos = IT_CHARPOS (it); |
7079 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 7080 | } |
521b203e GM |
7081 | else |
7082 | { | |
7083 | struct position pos; | |
f6b43440 | 7084 | |
f6b43440 RS |
7085 | iarg = max (iarg, this_scroll_margin); |
7086 | ||
7087 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
7088 | charpos = pos.bufpos; |
7089 | bytepos = pos.bytepos; | |
7090 | } | |
7091 | } | |
7092 | else | |
7093 | { | |
7094 | struct position pos; | |
7095 | int ht = window_internal_height (w); | |
7096 | ||
7097 | if (center_p) | |
a4429c5b | 7098 | iarg = ht / 2; |
f567c488 KS |
7099 | else if (iarg < 0) |
7100 | iarg += ht; | |
f6b43440 RS |
7101 | |
7102 | /* Don't let it get into the margin at either top or bottom. */ | |
7103 | iarg = max (iarg, this_scroll_margin); | |
7104 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 7105 | |
f6b43440 | 7106 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
7107 | charpos = pos.bufpos; |
7108 | bytepos = pos.bytepos; | |
7109 | } | |
7110 | ||
7111 | /* Set the new window start. */ | |
7112 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 7113 | w->window_end_valid = Qnil; |
177c0ea7 | 7114 | |
95605b1b RS |
7115 | w->optional_new_start = Qt; |
7116 | ||
6df47b59 GM |
7117 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
7118 | w->start_at_line_beg = Qt; | |
7119 | else | |
7120 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 7121 | |
478292ed | 7122 | set_buffer_internal (obuf); |
7ab12479 JB |
7123 | return Qnil; |
7124 | } | |
b7617575 GM |
7125 | |
7126 | ||
81fe0836 | 7127 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
7128 | 0, 1, 0, |
7129 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 7130 | WINDOW defaults to the selected window. |
8fef9de1 | 7131 | |
f039b2d2 CY |
7132 | The return value does not include the mode line, any header line, nor |
7133 | any partial-height lines in the text display area. */) | |
5842a27b | 7134 | (Lisp_Object window) |
81fe0836 MB |
7135 | { |
7136 | struct window *w = decode_window (window); | |
7137 | int pixel_height = window_box_height (w); | |
949cf20f | 7138 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
7139 | return make_number (line_height); |
7140 | } | |
7141 | ||
7142 | ||
7ab12479 JB |
7143 | \f |
7144 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
7145 | 1, 1, "P", |
7146 | doc: /* Position point relative to window. | |
7147 | With no argument, position point at center of window. | |
7148 | An argument specifies vertical position within the window; | |
7149 | zero means top of window, negative means relative to bottom of window. */) | |
5842a27b | 7150 | (Lisp_Object arg) |
7ab12479 | 7151 | { |
b7617575 GM |
7152 | struct window *w = XWINDOW (selected_window); |
7153 | int lines, start; | |
540b6aa0 | 7154 | Lisp_Object window; |
f6b43440 RS |
7155 | #if 0 |
7156 | int this_scroll_margin; | |
7157 | #endif | |
7ab12479 | 7158 | |
794b75c7 SM |
7159 | if (!(BUFFERP (w->buffer) |
7160 | && XBUFFER (w->buffer) == current_buffer)) | |
7161 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer | |
7162 | when passed below to set_marker_both. */ | |
7163 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 7164 | |
b7617575 | 7165 | window = selected_window; |
7ab12479 JB |
7166 | start = marker_position (w->start); |
7167 | if (start < BEGV || start > ZV) | |
7168 | { | |
b7617575 | 7169 | int height = window_internal_height (w); |
cd2be1dd | 7170 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 7171 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
7172 | w->start_at_line_beg = Fbolp (); |
7173 | w->force_start = Qt; | |
7174 | } | |
7175 | else | |
b73ea88e | 7176 | Fgoto_char (w->start); |
7ab12479 | 7177 | |
b7617575 | 7178 | lines = displayed_window_lines (w); |
f6b43440 RS |
7179 | |
7180 | #if 0 | |
7181 | this_scroll_margin = max (0, scroll_margin); | |
7182 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
7183 | #endif | |
7184 | ||
b7617575 GM |
7185 | if (NILP (arg)) |
7186 | XSETFASTINT (arg, lines / 2); | |
7187 | else | |
7188 | { | |
f6b43440 RS |
7189 | int iarg = XINT (Fprefix_numeric_value (arg)); |
7190 | ||
7191 | if (iarg < 0) | |
7192 | iarg = iarg + lines; | |
7193 | ||
7194 | #if 0 /* This code would prevent move-to-window-line from moving point | |
7195 | to a place inside the scroll margins (which would cause the | |
7196 | next redisplay to scroll). I wrote this code, but then concluded | |
7197 | it is probably better not to install it. However, it is here | |
7198 | inside #if 0 so as not to lose it. -- rms. */ | |
7199 | ||
7200 | /* Don't let it get into the margin at either top or bottom. */ | |
7201 | iarg = max (iarg, this_scroll_margin); | |
7202 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
7203 | #endif | |
7204 | ||
7205 | arg = make_number (iarg); | |
b7617575 GM |
7206 | } |
7207 | ||
c8bc6f65 | 7208 | /* Skip past a partially visible first line. */ |
163784df | 7209 | if (w->vscroll) |
163784df MB |
7210 | XSETINT (arg, XINT (arg) + 1); |
7211 | ||
540b6aa0 | 7212 | return Fvertical_motion (arg, window); |
7ab12479 | 7213 | } |
5500c422 GM |
7214 | |
7215 | ||
7ab12479 | 7216 | \f |
5500c422 GM |
7217 | /*********************************************************************** |
7218 | Window Configuration | |
7219 | ***********************************************************************/ | |
7220 | ||
7ab12479 JB |
7221 | struct save_window_data |
7222 | { | |
b102ceb1 | 7223 | struct vectorlike_header header; |
bdc727bf | 7224 | Lisp_Object selected_frame; |
7ab12479 JB |
7225 | Lisp_Object current_window; |
7226 | Lisp_Object current_buffer; | |
7227 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 7228 | Lisp_Object minibuf_selected_window; |
7ab12479 | 7229 | Lisp_Object root_window; |
bdc727bf | 7230 | Lisp_Object focus_frame; |
cbff28e8 RS |
7231 | /* A vector, each of whose elements is a struct saved_window |
7232 | for one window. */ | |
7ab12479 | 7233 | Lisp_Object saved_windows; |
b05b4e27 SM |
7234 | |
7235 | /* All fields above are traced by the GC. | |
7236 | From `fame-cols' down, the fields are ignored by the GC. */ | |
7237 | ||
7238 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
7239 | int frame_tool_bar_lines; | |
7ab12479 | 7240 | }; |
ff06df24 | 7241 | |
cbff28e8 | 7242 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 7243 | struct saved_window |
ea68264b | 7244 | { |
b102ceb1 | 7245 | struct vectorlike_header header; |
496e208e MR |
7246 | |
7247 | Lisp_Object window, clone_number; | |
ea68264b | 7248 | Lisp_Object buffer, start, pointm, mark; |
949cf20f | 7249 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 7250 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 7251 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
7252 | Lisp_Object parent, prev; |
7253 | Lisp_Object start_at_line_beg; | |
7254 | Lisp_Object display_table; | |
949cf20f KS |
7255 | Lisp_Object orig_top_line, orig_total_lines; |
7256 | Lisp_Object left_margin_cols, right_margin_cols; | |
7257 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
7258 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 7259 | Lisp_Object dedicated, resize_proportionally; |
496e208e | 7260 | Lisp_Object splits, nest, window_parameters; |
ea68264b GM |
7261 | }; |
7262 | ||
7ab12479 JB |
7263 | #define SAVED_WINDOW_N(swv,n) \ |
7264 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
7265 | ||
7266 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 7267 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 7268 | (Lisp_Object object) |
7ab12479 | 7269 | { |
6ad0381c | 7270 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
7271 | } |
7272 | ||
3f8ab7bd | 7273 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 7274 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 7275 | (Lisp_Object config) |
3f8ab7bd RS |
7276 | { |
7277 | register struct save_window_data *data; | |
7278 | struct Lisp_Vector *saved_windows; | |
7279 | ||
663fbbba | 7280 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
7281 | |
7282 | data = (struct save_window_data *) XVECTOR (config); | |
7283 | saved_windows = XVECTOR (data->saved_windows); | |
7284 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
7285 | } | |
7286 | ||
a7ca3326 | 7287 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
7288 | Sset_window_configuration, 1, 1, 0, |
7289 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
7290 | CONFIGURATION must be a value previously returned | |
7291 | by `current-window-configuration' (which see). | |
7292 | If CONFIGURATION was made from a frame that is now deleted, | |
7293 | only frame-independent values can be restored. In this case, | |
7294 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 7295 | (Lisp_Object configuration) |
7ab12479 | 7296 | { |
7ab12479 JB |
7297 | register struct save_window_data *data; |
7298 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 7299 | Lisp_Object new_current_buffer; |
fd482be5 | 7300 | Lisp_Object frame; |
44fa5b1e | 7301 | FRAME_PTR f; |
2452438f | 7302 | EMACS_INT old_point = -1; |
7ab12479 | 7303 | |
663fbbba | 7304 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 7305 | |
2f83aebe | 7306 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
7307 | saved_windows = XVECTOR (data->saved_windows); |
7308 | ||
7ab12479 | 7309 | new_current_buffer = data->current_buffer; |
4b4deea2 | 7310 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
7ab12479 | 7311 | new_current_buffer = Qnil; |
72695e47 | 7312 | else |
73cadfc1 DK |
7313 | { |
7314 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
7315 | /* The code further down "preserves point" by saving here PT in |
7316 | old_point and then setting it later back into PT. When the | |
7317 | current-selected-window and the final-selected-window both show | |
7318 | the current buffer, this suffers from the problem that the | |
7319 | current PT is the window-point of the current-selected-window, | |
7320 | while the final PT is the point of the final-selected-window, so | |
7321 | this copy from one PT to the other would end up moving the | |
7322 | window-point of the final-selected-window to the window-point of | |
7323 | the current-selected-window. So we have to be careful which | |
7324 | point of the current-buffer we copy into old_point. */ | |
7325 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
7326 | && WINDOWP (selected_window) | |
7327 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
7328 | && !EQ (selected_window, data->current_window)) | |
7329 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
7330 | else | |
7331 | old_point = PT; | |
73cadfc1 | 7332 | else |
203eb0aa SM |
7333 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
7334 | point in new_current_buffer as of the last time this buffer was | |
7335 | used. This can be non-deterministic since it can be changed by | |
7336 | things like jit-lock by mere temporary selection of some random | |
7337 | window that happens to show this buffer. | |
7338 | So if possible we want this arbitrary choice of "which point" to | |
7339 | be the one from the to-be-selected-window so as to prevent this | |
7340 | window's cursor from being copied from another window. */ | |
7341 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
7342 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
7343 | && !EQ (selected_window, data->current_window)) | |
7344 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
7345 | else | |
7346 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 7347 | } |
7ab12479 | 7348 | |
fd482be5 JB |
7349 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
7350 | f = XFRAME (frame); | |
177c0ea7 | 7351 | |
fd482be5 JB |
7352 | /* If f is a dead frame, don't bother rebuilding its window tree. |
7353 | However, there is other stuff we should still try to do below. */ | |
7354 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 7355 | { |
fd482be5 JB |
7356 | register struct window *w; |
7357 | register struct saved_window *p; | |
5500c422 GM |
7358 | struct window *root_window; |
7359 | struct window **leaf_windows; | |
7360 | int n_leaf_windows; | |
c4280705 | 7361 | int k, i, n; |
fd482be5 JB |
7362 | |
7363 | /* If the frame has been resized since this window configuration was | |
7364 | made, we change the frame to the size specified in the | |
7365 | configuration, restore the configuration, and then resize it | |
7366 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
7367 | int previous_frame_lines = FRAME_LINES (f); |
7368 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 7369 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 7370 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 7371 | |
d2b35234 RS |
7372 | /* The mouse highlighting code could get screwed up |
7373 | if it runs during this. */ | |
7374 | BLOCK_INPUT; | |
7375 | ||
b05b4e27 SM |
7376 | if (data->frame_lines != previous_frame_lines |
7377 | || data->frame_cols != previous_frame_cols) | |
7378 | change_frame_size (f, data->frame_lines, | |
7379 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 7380 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 7381 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 7382 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
7383 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
7384 | make_number (0)); | |
4314246f | 7385 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 7386 | if (data->frame_tool_bar_lines |
9ea173e8 | 7387 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
7388 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
7389 | make_number (0)); | |
4314246f | 7390 | #endif |
217f2871 | 7391 | #endif |
fd482be5 | 7392 | |
a46c0153 RS |
7393 | /* "Swap out" point from the selected window's buffer |
7394 | into the window itself. (Normally the pointm of the selected | |
7395 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
7396 | restoring the window contents, and prevent it from |
7397 | being done later on when we select a new window. */ | |
596ae0cf RS |
7398 | if (! NILP (XWINDOW (selected_window)->buffer)) |
7399 | { | |
7400 | w = XWINDOW (selected_window); | |
7401 | set_marker_both (w->pointm, | |
7402 | w->buffer, | |
7403 | BUF_PT (XBUFFER (w->buffer)), | |
7404 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7405 | } | |
7406 | ||
fd482be5 | 7407 | windows_or_buffers_changed++; |
29aeee73 | 7408 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 7409 | |
5500c422 | 7410 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 7411 | is a serious redisplay flickering problem. What we would |
5500c422 | 7412 | really like to do is to free only those matrices not reused |
9d14503e | 7413 | below. */ |
5500c422 GM |
7414 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
7415 | leaf_windows | |
7416 | = (struct window **) alloca (count_windows (root_window) | |
7417 | * sizeof (struct window *)); | |
7418 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
7419 | ||
fd482be5 JB |
7420 | /* Kludge Alert! |
7421 | Mark all windows now on frame as "deleted". | |
7422 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 7423 | |
fd482be5 JB |
7424 | Save their current buffers in their height fields, since we may |
7425 | need it later, if a buffer saved in the configuration is now | |
7426 | dead. */ | |
fa8a67e6 | 7427 | delete_all_subwindows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 7428 | |
eab3844f | 7429 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
7430 | { |
7431 | p = SAVED_WINDOW_N (saved_windows, k); | |
7432 | w = XWINDOW (p->window); | |
7433 | w->next = Qnil; | |
7ab12479 | 7434 | |
fd482be5 JB |
7435 | if (!NILP (p->parent)) |
7436 | w->parent = SAVED_WINDOW_N (saved_windows, | |
7437 | XFASTINT (p->parent))->window; | |
7438 | else | |
7439 | w->parent = Qnil; | |
7ab12479 | 7440 | |
fd482be5 | 7441 | if (!NILP (p->prev)) |
7ab12479 | 7442 | { |
fd482be5 JB |
7443 | w->prev = SAVED_WINDOW_N (saved_windows, |
7444 | XFASTINT (p->prev))->window; | |
7445 | XWINDOW (w->prev)->next = p->window; | |
7446 | } | |
7447 | else | |
7448 | { | |
7449 | w->prev = Qnil; | |
7450 | if (!NILP (w->parent)) | |
7451 | { | |
949cf20f | 7452 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
7453 | { |
7454 | XWINDOW (w->parent)->vchild = p->window; | |
7455 | XWINDOW (w->parent)->hchild = Qnil; | |
7456 | } | |
7457 | else | |
7458 | { | |
7459 | XWINDOW (w->parent)->hchild = p->window; | |
7460 | XWINDOW (w->parent)->vchild = Qnil; | |
7461 | } | |
7462 | } | |
7463 | } | |
7464 | ||
496e208e | 7465 | w->clone_number = p->clone_number; |
fd482be5 JB |
7466 | /* If we squirreled away the buffer in the window's height, |
7467 | restore it now. */ | |
949cf20f KS |
7468 | if (BUFFERP (w->total_lines)) |
7469 | w->buffer = w->total_lines; | |
7470 | w->left_col = p->left_col; | |
7471 | w->top_line = p->top_line; | |
7472 | w->total_cols = p->total_cols; | |
7473 | w->total_lines = p->total_lines; | |
496e208e MR |
7474 | w->normal_cols = p->normal_cols; |
7475 | w->normal_lines = p->normal_lines; | |
fd482be5 | 7476 | w->hscroll = p->hscroll; |
ea68264b | 7477 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 7478 | w->display_table = p->display_table; |
949cf20f KS |
7479 | w->orig_top_line = p->orig_top_line; |
7480 | w->orig_total_lines = p->orig_total_lines; | |
7481 | w->left_margin_cols = p->left_margin_cols; | |
7482 | w->right_margin_cols = p->right_margin_cols; | |
7483 | w->left_fringe_width = p->left_fringe_width; | |
7484 | w->right_fringe_width = p->right_fringe_width; | |
7485 | w->fringes_outside_margins = p->fringes_outside_margins; | |
7486 | w->scroll_bar_width = p->scroll_bar_width; | |
7487 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 7488 | w->dedicated = p->dedicated; |
496e208e MR |
7489 | w->splits = p->splits; |
7490 | w->nest = p->nest; | |
7491 | w->window_parameters = p->window_parameters; | |
047aaeb9 | 7492 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 7493 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 7494 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
7495 | |
7496 | /* Reinstall the saved buffer and pointers into it. */ | |
7497 | if (NILP (p->buffer)) | |
7498 | w->buffer = p->buffer; | |
7499 | else | |
7500 | { | |
4b4deea2 | 7501 | if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
fd482be5 JB |
7502 | /* If saved buffer is alive, install it. */ |
7503 | { | |
7504 | w->buffer = p->buffer; | |
7505 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
7506 | set_marker_restricted (w->start, p->start, w->buffer); |
7507 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
4b4deea2 | 7508 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), |
b73ea88e | 7509 | p->mark, w->buffer); |
fd482be5 JB |
7510 | |
7511 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
7512 | restore the location of point in the buffer which was |
7513 | current when the window configuration was recorded. */ | |
6b54027b RS |
7514 | if (!EQ (p->buffer, new_current_buffer) |
7515 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
7516 | Fgoto_char (w->pointm); |
7517 | } | |
4b4deea2 | 7518 | else if (NILP (w->buffer) || NILP (BVAR (XBUFFER (w->buffer), name))) |
52a68e98 | 7519 | /* Else unless window has a live buffer, get one. */ |
7ab12479 | 7520 | { |
fd482be5 JB |
7521 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
7522 | /* This will set the markers to beginning of visible | |
7523 | range. */ | |
7524 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
7525 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
7526 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
7527 | } |
7528 | else | |
fd482be5 | 7529 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 7530 | are real. */ |
7ab12479 | 7531 | { |
fd482be5 JB |
7532 | /* Set window markers at start of visible range. */ |
7533 | if (XMARKER (w->start)->buffer == 0) | |
7534 | set_marker_restricted (w->start, make_number (0), | |
7535 | w->buffer); | |
7536 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
7537 | set_marker_restricted_both (w->pointm, w->buffer, |
7538 | BUF_PT (XBUFFER (w->buffer)), | |
7539 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 7540 | w->start_at_line_beg = Qt; |
7ab12479 JB |
7541 | } |
7542 | } | |
7543 | } | |
9ace597f | 7544 | |
fd482be5 | 7545 | FRAME_ROOT_WINDOW (f) = data->root_window; |
a46c0153 RS |
7546 | |
7547 | /* Arrange *not* to restore point in the buffer that was | |
7548 | current when the window configuration was saved. */ | |
243a5ce6 RS |
7549 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
7550 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 7551 | make_number (old_point), |
243a5ce6 | 7552 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 7553 | |
6dc1d2d3 MR |
7554 | /* In the following call to `select-window, prevent "swapping |
7555 | out point" in the old selected window using the buffer that | |
7556 | has been restored into it. We already swapped out that point | |
7557 | from that window's old buffer. */ | |
e6b84b30 | 7558 | select_window (data->current_window, Qnil, 1); |
4b4deea2 | 7559 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 7560 | = selected_window; |
7ab12479 | 7561 | |
db269683 | 7562 | if (NILP (data->focus_frame) |
017b2bad | 7563 | || (FRAMEP (data->focus_frame) |
db269683 JB |
7564 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
7565 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 7566 | |
fd482be5 | 7567 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
7568 | if (previous_frame_lines != FRAME_LINES (f) |
7569 | || previous_frame_cols != FRAME_COLS (f)) | |
7570 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 7571 | 0, 0, 0); |
e3678b64 | 7572 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 7573 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
7574 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
7575 | make_number (0)); | |
4314246f | 7576 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
7577 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
7578 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
7579 | make_number (0)); | |
4314246f | 7580 | #endif |
217f2871 | 7581 | #endif |
d2b35234 | 7582 | |
5500c422 | 7583 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
7584 | for (i = n = 0; i < n_leaf_windows; ++i) |
7585 | { | |
7586 | if (NILP (leaf_windows[i]->buffer)) | |
7587 | { | |
7588 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 7589 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
7590 | && NILP (leaf_windows[i]->vchild)); |
7591 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
7592 | } |
7593 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
7594 | ++n; | |
7595 | } | |
177c0ea7 | 7596 | |
5500c422 GM |
7597 | adjust_glyphs (f); |
7598 | ||
d2b35234 | 7599 | UNBLOCK_INPUT; |
756b6edc | 7600 | |
478292ed RS |
7601 | /* Fselect_window will have made f the selected frame, so we |
7602 | reselect the proper frame here. Fhandle_switch_frame will change the | |
7603 | selected window too, but that doesn't make the call to | |
7604 | Fselect_window above totally superfluous; it still sets f's | |
7605 | selected window. */ | |
7606 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 7607 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 7608 | |
eeca6f6f | 7609 | run_window_configuration_change_hook (f); |
478292ed | 7610 | } |
bdc727bf JB |
7611 | |
7612 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 7613 | Fset_buffer (new_current_buffer); |
bdc727bf | 7614 | |
478292ed | 7615 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 7616 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 7617 | |
3f8ab7bd | 7618 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
7619 | } |
7620 | ||
fa8a67e6 MR |
7621 | /* Delete all subwindows reachable via the next, vchild, and hchild |
7622 | slots of WINDOW. */ | |
fd482be5 | 7623 | void |
fa8a67e6 | 7624 | delete_all_subwindows (Lisp_Object window) |
7ab12479 | 7625 | { |
fa8a67e6 MR |
7626 | register struct window *w; |
7627 | ||
7628 | w = XWINDOW (window); | |
7629 | ||
265a9e55 | 7630 | if (!NILP (w->next)) |
fa8a67e6 MR |
7631 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
7632 | delete_all_subwindows (w->next); | |
605be8af | 7633 | |
949cf20f | 7634 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 7635 | |
fa8a67e6 MR |
7636 | if (!NILP (w->vchild)) |
7637 | { | |
7638 | delete_all_subwindows (w->vchild); | |
7639 | w->vchild = Qnil; | |
7640 | } | |
7641 | else if (!NILP (w->hchild)) | |
7642 | { | |
7643 | delete_all_subwindows (w->hchild); | |
7644 | w->hchild = Qnil; | |
7645 | } | |
7646 | else if (!NILP (w->buffer)) | |
7647 | { | |
7648 | unshow_buffer (w); | |
7649 | unchain_marker (XMARKER (w->pointm)); | |
7650 | unchain_marker (XMARKER (w->start)); | |
7651 | w->buffer = Qnil; | |
7652 | } | |
acf70840 GM |
7653 | |
7654 | Vwindow_list = Qnil; | |
7ab12479 JB |
7655 | } |
7656 | \f | |
7657 | static int | |
971de7fb | 7658 | count_windows (register struct window *window) |
7ab12479 JB |
7659 | { |
7660 | register int count = 1; | |
265a9e55 | 7661 | if (!NILP (window->next)) |
7ab12479 | 7662 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 7663 | if (!NILP (window->vchild)) |
7ab12479 | 7664 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 7665 | if (!NILP (window->hchild)) |
7ab12479 JB |
7666 | count += count_windows (XWINDOW (window->hchild)); |
7667 | return count; | |
7668 | } | |
7669 | ||
5500c422 | 7670 | |
177c0ea7 | 7671 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
7672 | Value is last index + 1. */ |
7673 | ||
7674 | static int | |
971de7fb | 7675 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
7676 | { |
7677 | while (w) | |
7678 | { | |
7679 | if (!NILP (w->hchild)) | |
7680 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
7681 | else if (!NILP (w->vchild)) | |
7682 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 7683 | else |
5500c422 GM |
7684 | flat[i++] = w; |
7685 | ||
7686 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
7687 | } | |
7688 | ||
7689 | return i; | |
7690 | } | |
7691 | ||
7692 | ||
7693 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
7694 | null if W's current matrix is invalid, so that no meaningfull glyph | |
7695 | can be returned. */ | |
7696 | ||
7697 | struct glyph * | |
971de7fb | 7698 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
7699 | { |
7700 | struct glyph_row *row; | |
7701 | struct glyph *glyph; | |
7702 | ||
7703 | if (w->phys_cursor.vpos >= 0 | |
7704 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
7705 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
7706 | row->enabled_p) | |
7707 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
7708 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
7709 | else | |
7710 | glyph = NULL; | |
7711 | ||
7712 | return glyph; | |
7713 | } | |
7714 | ||
7715 | ||
7ab12479 | 7716 | static int |
971de7fb | 7717 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
7718 | { |
7719 | register struct saved_window *p; | |
7720 | register struct window *w; | |
7721 | register Lisp_Object tem; | |
7722 | ||
265a9e55 | 7723 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
7724 | { |
7725 | p = SAVED_WINDOW_N (vector, i); | |
7726 | w = XWINDOW (window); | |
7727 | ||
2a1893f4 | 7728 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 | 7729 | p->window = window; |
496e208e | 7730 | p->clone_number = w->clone_number; |
7ab12479 | 7731 | p->buffer = w->buffer; |
949cf20f KS |
7732 | p->left_col = w->left_col; |
7733 | p->top_line = w->top_line; | |
7734 | p->total_cols = w->total_cols; | |
7735 | p->total_lines = w->total_lines; | |
496e208e MR |
7736 | p->normal_cols = w->normal_cols; |
7737 | p->normal_lines = w->normal_lines; | |
7ab12479 | 7738 | p->hscroll = w->hscroll; |
ea68264b | 7739 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 7740 | p->display_table = w->display_table; |
949cf20f KS |
7741 | p->orig_top_line = w->orig_top_line; |
7742 | p->orig_total_lines = w->orig_total_lines; | |
7743 | p->left_margin_cols = w->left_margin_cols; | |
7744 | p->right_margin_cols = w->right_margin_cols; | |
7745 | p->left_fringe_width = w->left_fringe_width; | |
7746 | p->right_fringe_width = w->right_fringe_width; | |
7747 | p->fringes_outside_margins = w->fringes_outside_margins; | |
7748 | p->scroll_bar_width = w->scroll_bar_width; | |
7749 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 7750 | p->dedicated = w->dedicated; |
496e208e MR |
7751 | p->splits = w->splits; |
7752 | p->nest = w->nest; | |
047aaeb9 | 7753 | p->resize_proportionally = w->resize_proportionally; |
496e208e | 7754 | p->window_parameters = w->window_parameters; |
265a9e55 | 7755 | if (!NILP (w->buffer)) |
7ab12479 JB |
7756 | { |
7757 | /* Save w's value of point in the window configuration. | |
7758 | If w is the selected window, then get the value of point | |
7759 | from the buffer; pointm is garbage in the selected window. */ | |
7760 | if (EQ (window, selected_window)) | |
7761 | { | |
7762 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
7763 | set_marker_both (p->pointm, w->buffer, |
7764 | BUF_PT (XBUFFER (w->buffer)), | |
7765 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
7766 | } |
7767 | else | |
eeb82665 | 7768 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 7769 | |
eeb82665 | 7770 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
7771 | p->start_at_line_beg = w->start_at_line_beg; |
7772 | ||
4b4deea2 | 7773 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 7774 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
7775 | } |
7776 | else | |
7777 | { | |
7778 | p->pointm = Qnil; | |
7779 | p->start = Qnil; | |
7780 | p->mark = Qnil; | |
7781 | p->start_at_line_beg = Qnil; | |
7782 | } | |
7783 | ||
265a9e55 | 7784 | if (NILP (w->parent)) |
7ab12479 JB |
7785 | p->parent = Qnil; |
7786 | else | |
7787 | p->parent = XWINDOW (w->parent)->temslot; | |
7788 | ||
265a9e55 | 7789 | if (NILP (w->prev)) |
7ab12479 JB |
7790 | p->prev = Qnil; |
7791 | else | |
7792 | p->prev = XWINDOW (w->prev)->temslot; | |
7793 | ||
265a9e55 | 7794 | if (!NILP (w->vchild)) |
7ab12479 | 7795 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 7796 | if (!NILP (w->hchild)) |
7ab12479 JB |
7797 | i = save_window_save (w->hchild, vector, i); |
7798 | } | |
7799 | ||
7800 | return i; | |
7801 | } | |
7802 | ||
a7ca3326 | 7803 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
7804 | Scurrent_window_configuration, 0, 1, 0, |
7805 | doc: /* Return an object representing the current window configuration of FRAME. | |
7806 | If FRAME is nil or omitted, use the selected frame. | |
7807 | This describes the number of windows, their sizes and current buffers, | |
7808 | and for each displayed buffer, where display starts, and the positions of | |
7809 | point and mark. An exception is made for point in the current buffer: | |
7810 | its value is -not- saved. | |
7811 | This also records the currently selected frame, and FRAME's focus | |
7812 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 7813 | (Lisp_Object frame) |
7ab12479 JB |
7814 | { |
7815 | register Lisp_Object tem; | |
7816 | register int n_windows; | |
7817 | register struct save_window_data *data; | |
7818 | register int i; | |
44fa5b1e | 7819 | FRAME_PTR f; |
43bad991 | 7820 | |
44fa5b1e | 7821 | if (NILP (frame)) |
1ae1a37d | 7822 | frame = selected_frame; |
b7826503 | 7823 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 7824 | f = XFRAME (frame); |
7ab12479 | 7825 | |
44fa5b1e | 7826 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
7827 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
7828 | PVEC_WINDOW_CONFIGURATION); | |
7829 | ||
7830 | data->frame_cols = FRAME_COLS (f); | |
7831 | data->frame_lines = FRAME_LINES (f); | |
7832 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
7833 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 7834 | data->selected_frame = selected_frame; |
44fa5b1e | 7835 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 7836 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 7837 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 7838 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 7839 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 7840 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
7841 | tem = Fmake_vector (make_number (n_windows), Qnil); |
7842 | data->saved_windows = tem; | |
7843 | for (i = 0; i < n_windows; i++) | |
7844 | XVECTOR (tem)->contents[i] | |
8a450f0a | 7845 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 7846 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 7847 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
7848 | return (tem); |
7849 | } | |
7850 | ||
94e16dd5 KS |
7851 | \f |
7852 | /*********************************************************************** | |
7853 | Window Split Tree | |
7854 | ***********************************************************************/ | |
7855 | ||
7856 | static Lisp_Object | |
971de7fb | 7857 | window_tree (struct window *w) |
94e16dd5 KS |
7858 | { |
7859 | Lisp_Object tail = Qnil; | |
7860 | Lisp_Object result = Qnil; | |
7861 | ||
7862 | while (w) | |
7863 | { | |
7864 | Lisp_Object wn; | |
7865 | ||
7866 | XSETWINDOW (wn, w); | |
7867 | if (!NILP (w->hchild)) | |
7868 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 7869 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
7870 | else if (!NILP (w->vchild)) |
7871 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 7872 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
7873 | |
7874 | if (NILP (result)) | |
7875 | { | |
7876 | result = tail = Fcons (wn, Qnil); | |
7877 | } | |
7878 | else | |
7879 | { | |
7880 | XSETCDR (tail, Fcons (wn, Qnil)); | |
7881 | tail = XCDR (tail); | |
7882 | } | |
7883 | ||
7884 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
7885 | } | |
7886 | ||
7887 | return result; | |
7888 | } | |
7889 | ||
7890 | ||
7891 | ||
c16e1cc3 | 7892 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 7893 | 0, 1, 0, |
c16e1cc3 | 7894 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
7895 | |
7896 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 7897 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
7898 | is the frame's minibuffer window. |
7899 | ||
7900 | If the root window is not split, ROOT is the root window itself. | |
7901 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 7902 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
7903 | size and position of the subwindows in the split, and the rest of the |
7904 | elements are the subwindows in the split. Each of the subwindows may | |
7905 | again be a window or a list representing a window split, and so on. | |
7906 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
7907 | ||
7908 | If FRAME is nil or omitted, return information on the currently | |
7909 | selected frame. */) | |
5842a27b | 7910 | (Lisp_Object frame) |
94e16dd5 | 7911 | { |
94e16dd5 KS |
7912 | FRAME_PTR f; |
7913 | ||
7914 | if (NILP (frame)) | |
7915 | frame = selected_frame; | |
7916 | ||
7917 | CHECK_FRAME (frame); | |
7918 | f = XFRAME (frame); | |
7919 | ||
7920 | if (!FRAME_LIVE_P (f)) | |
7921 | return Qnil; | |
7922 | ||
c16e1cc3 | 7923 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
7924 | } |
7925 | ||
5500c422 GM |
7926 | \f |
7927 | /*********************************************************************** | |
7928 | Marginal Areas | |
7929 | ***********************************************************************/ | |
7930 | ||
7931 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 7932 | 2, 3, 0, |
fdb82f93 | 7933 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
7934 | If WINDOW is nil, set margins of the currently selected window. |
7935 | Second arg LEFT-WIDTH specifies the number of character cells to | |
7936 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
7937 | does the same for the right marginal area. A nil width parameter | |
7938 | means no margin. */) | |
5842a27b | 7939 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
7940 | { |
7941 | struct window *w = decode_window (window); | |
5500c422 | 7942 | |
6b61353c KH |
7943 | /* Translate negative or zero widths to nil. |
7944 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 7945 | |
c10ce82e | 7946 | if (!NILP (left_width)) |
6b61353c | 7947 | { |
c10ce82e JB |
7948 | CHECK_NUMBER (left_width); |
7949 | if (XINT (left_width) <= 0) | |
7950 | left_width = Qnil; | |
6b61353c | 7951 | } |
5500c422 | 7952 | |
c10ce82e | 7953 | if (!NILP (right_width)) |
6b61353c | 7954 | { |
c10ce82e JB |
7955 | CHECK_NUMBER (right_width); |
7956 | if (XINT (right_width) <= 0) | |
7957 | right_width = Qnil; | |
6b61353c | 7958 | } |
5500c422 | 7959 | |
c10ce82e JB |
7960 | if (!EQ (w->left_margin_cols, left_width) |
7961 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 7962 | { |
c10ce82e JB |
7963 | w->left_margin_cols = left_width; |
7964 | w->right_margin_cols = right_width; | |
949cf20f KS |
7965 | |
7966 | adjust_window_margins (w); | |
7967 | ||
7968 | ++windows_or_buffers_changed; | |
7969 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
7970 | } | |
5500c422 | 7971 | |
5500c422 GM |
7972 | return Qnil; |
7973 | } | |
7974 | ||
7975 | ||
7976 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
7977 | 0, 1, 0, | |
fdb82f93 PJ |
7978 | doc: /* Get width of marginal areas of window WINDOW. |
7979 | If WINDOW is omitted or nil, use the currently selected window. | |
7980 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
7981 | If a marginal area does not exist, its width will be returned | |
7982 | as nil. */) | |
5842a27b | 7983 | (Lisp_Object window) |
5500c422 GM |
7984 | { |
7985 | struct window *w = decode_window (window); | |
949cf20f KS |
7986 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
7987 | } | |
7988 | ||
7989 | ||
7990 | \f | |
7991 | /*********************************************************************** | |
7992 | Fringes | |
7993 | ***********************************************************************/ | |
7994 | ||
a7ca3326 | 7995 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 7996 | 2, 4, 0, |
6b61353c KH |
7997 | doc: /* Set the fringe widths of window WINDOW. |
7998 | If WINDOW is nil, set the fringe widths of the currently selected | |
7999 | window. | |
8000 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
8001 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
8002 | fringe width. If a fringe width arg is nil, that means to use the | |
8003 | frame's default fringe width. Default fringe widths can be set with | |
8004 | the command `set-fringe-style'. | |
8005 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
8006 | outside of the display margins. By default, fringes are drawn between | |
8007 | display marginal areas and the text area. */) | |
5842a27b | 8008 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
8009 | { |
8010 | struct window *w = decode_window (window); | |
8011 | ||
c10ce82e JB |
8012 | if (!NILP (left_width)) |
8013 | CHECK_NATNUM (left_width); | |
8014 | if (!NILP (right_width)) | |
8015 | CHECK_NATNUM (right_width); | |
5a857365 | 8016 | |
017e297e | 8017 | /* Do nothing on a tty. */ |
d46c6df5 NR |
8018 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
8019 | && (!EQ (w->left_fringe_width, left_width) | |
8020 | || !EQ (w->right_fringe_width, right_width) | |
8021 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 8022 | { |
c10ce82e JB |
8023 | w->left_fringe_width = left_width; |
8024 | w->right_fringe_width = right_width; | |
949cf20f KS |
8025 | w->fringes_outside_margins = outside_margins; |
8026 | ||
8027 | adjust_window_margins (w); | |
8028 | ||
8029 | clear_glyph_matrix (w->current_matrix); | |
8030 | w->window_end_valid = Qnil; | |
8031 | ||
8032 | ++windows_or_buffers_changed; | |
8033 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
8034 | } | |
8035 | ||
8036 | return Qnil; | |
8037 | } | |
8038 | ||
8039 | ||
8040 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
8041 | 0, 1, 0, | |
8042 | doc: /* Get width of fringes of window WINDOW. | |
8043 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 8044 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 8045 | (Lisp_Object window) |
949cf20f KS |
8046 | { |
8047 | struct window *w = decode_window (window); | |
d46c6df5 | 8048 | |
949cf20f KS |
8049 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
8050 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
8051 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
8052 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
8053 | } |
8054 | ||
8055 | ||
8056 | \f | |
8057 | /*********************************************************************** | |
8058 | Scroll bars | |
8059 | ***********************************************************************/ | |
8060 | ||
a7ca3326 | 8061 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 8062 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f KS |
8063 | doc: /* Set width and type of scroll bars of window WINDOW. |
8064 | If window is nil, set scroll bars of the currently selected window. | |
8065 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
8066 | this is automatically adjusted to a multiple of the frame column width. | |
8067 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
8068 | bar: left, right, or nil. | |
6b61353c | 8069 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
8070 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
8071 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 8072 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
8073 | { |
8074 | struct window *w = decode_window (window); | |
8075 | ||
8076 | if (!NILP (width)) | |
0f8fe9a2 SM |
8077 | { |
8078 | CHECK_NATNUM (width); | |
949cf20f | 8079 | |
0f8fe9a2 SM |
8080 | if (XINT (width) == 0) |
8081 | vertical_type = Qnil; | |
8082 | } | |
949cf20f | 8083 | |
413a79ad | 8084 | if (!(NILP (vertical_type) |
0cc1039f | 8085 | || EQ (vertical_type, Qleft) |
6b61353c KH |
8086 | || EQ (vertical_type, Qright) |
8087 | || EQ (vertical_type, Qt))) | |
8088 | error ("Invalid type of vertical scroll bar"); | |
8089 | ||
949cf20f KS |
8090 | if (!EQ (w->scroll_bar_width, width) |
8091 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
8092 | { | |
8093 | w->scroll_bar_width = width; | |
8094 | w->vertical_scroll_bar_type = vertical_type; | |
8095 | ||
8096 | adjust_window_margins (w); | |
8097 | ||
8098 | clear_glyph_matrix (w->current_matrix); | |
8099 | w->window_end_valid = Qnil; | |
8100 | ||
8101 | ++windows_or_buffers_changed; | |
8102 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
8103 | } | |
8104 | ||
8105 | return Qnil; | |
8106 | } | |
8107 | ||
8108 | ||
8109 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
8110 | 0, 1, 0, | |
8111 | doc: /* Get width and type of scroll bars of window WINDOW. | |
8112 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
8113 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
8114 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
8115 | value. */) | |
5842a27b | 8116 | (Lisp_Object window) |
949cf20f KS |
8117 | { |
8118 | struct window *w = decode_window (window); | |
8119 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
8120 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
8121 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
8122 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
8123 | Fcons (w->vertical_scroll_bar_type, | |
8124 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
8125 | } |
8126 | ||
8127 | ||
7ab12479 | 8128 | \f |
5500c422 GM |
8129 | /*********************************************************************** |
8130 | Smooth scrolling | |
8131 | ***********************************************************************/ | |
8132 | ||
0cc1039f | 8133 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
8134 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
8135 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 8136 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 8137 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 8138 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 8139 | { |
47004952 | 8140 | Lisp_Object result; |
5500c422 GM |
8141 | struct frame *f; |
8142 | struct window *w; | |
177c0ea7 | 8143 | |
5500c422 GM |
8144 | if (NILP (window)) |
8145 | window = selected_window; | |
47004952 | 8146 | else |
b7826503 | 8147 | CHECK_WINDOW (window); |
5500c422 GM |
8148 | w = XWINDOW (window); |
8149 | f = XFRAME (w->frame); | |
177c0ea7 | 8150 | |
5500c422 | 8151 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
8152 | result = (NILP (pixels_p) |
8153 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
8154 | : make_number (-w->vscroll)); | |
5500c422 | 8155 | else |
47004952 GM |
8156 | result = make_number (0); |
8157 | return result; | |
5500c422 GM |
8158 | } |
8159 | ||
8160 | ||
8161 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 8162 | 2, 3, 0, |
fdb82f93 | 8163 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
8164 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
8165 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 8166 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
8167 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
8168 | corresponds to an integral number of pixels. The return value is the | |
8169 | result of this rounding. | |
8170 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 8171 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
8172 | { |
8173 | struct window *w; | |
8174 | struct frame *f; | |
177c0ea7 | 8175 | |
5500c422 GM |
8176 | if (NILP (window)) |
8177 | window = selected_window; | |
47004952 | 8178 | else |
b7826503 PJ |
8179 | CHECK_WINDOW (window); |
8180 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 8181 | |
5500c422 GM |
8182 | w = XWINDOW (window); |
8183 | f = XFRAME (w->frame); | |
8184 | ||
8185 | if (FRAME_WINDOW_P (f)) | |
8186 | { | |
8187 | int old_dy = w->vscroll; | |
177c0ea7 | 8188 | |
0cc1039f KS |
8189 | w->vscroll = - (NILP (pixels_p) |
8190 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
8191 | : XFLOATINT (vscroll)); | |
47004952 | 8192 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 8193 | |
e56263e5 KS |
8194 | if (w->vscroll != old_dy) |
8195 | { | |
8196 | /* Adjust glyph matrix of the frame if the virtual display | |
8197 | area becomes larger than before. */ | |
8198 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
8199 | adjust_glyphs (f); | |
177c0ea7 | 8200 | |
e56263e5 KS |
8201 | /* Prevent redisplay shortcuts. */ |
8202 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
8203 | } | |
5500c422 | 8204 | } |
177c0ea7 | 8205 | |
0cc1039f | 8206 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 8207 | } |
177c0ea7 | 8208 | |
7bbb5782 GM |
8209 | \f |
8210 | /* Call FN for all leaf windows on frame F. FN is called with the | |
8211 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 8212 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 8213 | |
2f7c71a1 AS |
8214 | static void |
8215 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
8216 | void *user_data) | |
7bbb5782 | 8217 | { |
56f2de10 | 8218 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
8219 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
8220 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
8221 | } |
8222 | ||
8223 | ||
8224 | /* Helper function for foreach_window. Call FN for all leaf windows | |
8225 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 8226 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 8227 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 8228 | |
67492200 | 8229 | static int |
971de7fb | 8230 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 8231 | { |
67492200 | 8232 | int cont; |
177c0ea7 | 8233 | |
67492200 | 8234 | for (cont = 1; w && cont;) |
7bbb5782 GM |
8235 | { |
8236 | if (!NILP (w->hchild)) | |
f95464e4 | 8237 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 8238 | else if (!NILP (w->vchild)) |
f95464e4 | 8239 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 8240 | else |
0f532a9a | 8241 | cont = fn (w, user_data); |
177c0ea7 | 8242 | |
7bbb5782 GM |
8243 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
8244 | } | |
67492200 GM |
8245 | |
8246 | return cont; | |
7bbb5782 GM |
8247 | } |
8248 | ||
8249 | ||
6d194a45 | 8250 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 8251 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
8252 | the window start. */ |
8253 | ||
67492200 | 8254 | static int |
971de7fb | 8255 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 8256 | { |
08c1d235 SM |
8257 | if (MINI_WINDOW_P (w) |
8258 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
8259 | && (w == XWINDOW (selected_window) | |
8260 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
8261 | && ! NILP (Vminibuf_scroll_window) | |
8262 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 8263 | freeze_p = NULL; |
177c0ea7 | 8264 | |
f95464e4 | 8265 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 8266 | return 1; |
7bbb5782 GM |
8267 | } |
8268 | ||
8269 | ||
8270 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
8271 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
8272 | means freeze the window start. */ | |
8273 | ||
8274 | void | |
971de7fb | 8275 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 8276 | { |
cbccabec | 8277 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 8278 | } |
5500c422 GM |
8279 | |
8280 | \f | |
8281 | /*********************************************************************** | |
8282 | Initialization | |
8283 | ***********************************************************************/ | |
8284 | ||
cbff28e8 | 8285 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 8286 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
8287 | |
8288 | int | |
971de7fb | 8289 | compare_window_configurations (Lisp_Object c1, Lisp_Object c2, int ignore_positions) |
cbff28e8 RS |
8290 | { |
8291 | register struct save_window_data *d1, *d2; | |
8292 | struct Lisp_Vector *sw1, *sw2; | |
8293 | int i; | |
8294 | ||
663fbbba KS |
8295 | CHECK_WINDOW_CONFIGURATION (c1); |
8296 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 8297 | |
cbff28e8 RS |
8298 | d1 = (struct save_window_data *) XVECTOR (c1); |
8299 | d2 = (struct save_window_data *) XVECTOR (c2); | |
8300 | sw1 = XVECTOR (d1->saved_windows); | |
8301 | sw2 = XVECTOR (d2->saved_windows); | |
8302 | ||
b05b4e27 | 8303 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 8304 | return 0; |
b05b4e27 | 8305 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 8306 | return 0; |
b05b4e27 | 8307 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
8308 | return 0; |
8309 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
8310 | return 0; | |
8311 | /* Don't compare the current_window field directly. | |
8312 | Instead see w1_is_current and w2_is_current, below. */ | |
8313 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
8314 | return 0; | |
2f8274be | 8315 | if (! ignore_positions) |
3f49fddc KS |
8316 | { |
8317 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
8318 | return 0; | |
8319 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
8320 | return 0; | |
8321 | } | |
cbff28e8 RS |
8322 | /* Don't compare the root_window field. |
8323 | We don't require the two configurations | |
8324 | to use the same window object, | |
8325 | and the two root windows must be equivalent | |
8326 | if everything else compares equal. */ | |
8327 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
8328 | return 0; | |
cbff28e8 RS |
8329 | |
8330 | /* Verify that the two confis have the same number of windows. */ | |
eab3844f | 8331 | if (sw1->header.size != sw2->header.size) |
cbff28e8 RS |
8332 | return 0; |
8333 | ||
eab3844f | 8334 | for (i = 0; i < sw1->header.size; i++) |
cbff28e8 RS |
8335 | { |
8336 | struct saved_window *p1, *p2; | |
8337 | int w1_is_current, w2_is_current; | |
8338 | ||
8339 | p1 = SAVED_WINDOW_N (sw1, i); | |
8340 | p2 = SAVED_WINDOW_N (sw2, i); | |
8341 | ||
8342 | /* Verify that the current windows in the two | |
8343 | configurations correspond to each other. */ | |
8344 | w1_is_current = EQ (d1->current_window, p1->window); | |
8345 | w2_is_current = EQ (d2->current_window, p2->window); | |
8346 | ||
8347 | if (w1_is_current != w2_is_current) | |
8348 | return 0; | |
8349 | ||
8350 | /* Verify that the corresponding windows do match. */ | |
8351 | if (! EQ (p1->buffer, p2->buffer)) | |
8352 | return 0; | |
949cf20f | 8353 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 8354 | return 0; |
949cf20f | 8355 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 8356 | return 0; |
949cf20f | 8357 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 8358 | return 0; |
949cf20f | 8359 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 8360 | return 0; |
cbff28e8 RS |
8361 | if (! EQ (p1->display_table, p2->display_table)) |
8362 | return 0; | |
8363 | if (! EQ (p1->parent, p2->parent)) | |
8364 | return 0; | |
8365 | if (! EQ (p1->prev, p2->prev)) | |
8366 | return 0; | |
2f8274be RS |
8367 | if (! ignore_positions) |
8368 | { | |
8369 | if (! EQ (p1->hscroll, p2->hscroll)) | |
8370 | return 0; | |
ea68264b GM |
8371 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
8372 | return 0; | |
2f8274be RS |
8373 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
8374 | return 0; | |
8375 | if (NILP (Fequal (p1->start, p2->start))) | |
8376 | return 0; | |
8377 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
8378 | return 0; | |
8379 | if (NILP (Fequal (p1->mark, p2->mark))) | |
8380 | return 0; | |
8381 | } | |
949cf20f KS |
8382 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
8383 | return 0; | |
8384 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
8385 | return 0; | |
8386 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
8387 | return 0; | |
8388 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
8389 | return 0; | |
8390 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
8391 | return 0; | |
8392 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
8393 | return 0; | |
8394 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
8395 | return 0; | |
cbff28e8 RS |
8396 | } |
8397 | ||
8398 | return 1; | |
8399 | } | |
2f8274be RS |
8400 | |
8401 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
8402 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
8403 | doc: /* Compare two window configurations as regards the structure of windows. |
8404 | This function ignores details such as the values of point and mark | |
8405 | and scrolling positions. */) | |
5842a27b | 8406 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
8407 | { |
8408 | if (compare_window_configurations (x, y, 1)) | |
8409 | return Qt; | |
8410 | return Qnil; | |
8411 | } | |
cbff28e8 | 8412 | \f |
dfcf069d | 8413 | void |
971de7fb | 8414 | init_window_once (void) |
7ab12479 | 8415 | { |
3224dac1 | 8416 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
8417 | XSETFRAME (selected_frame, f); |
8418 | Vterminal_frame = selected_frame; | |
8419 | minibuf_window = f->minibuffer_window; | |
8420 | selected_window = f->selected_window; | |
8421 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
8422 | |
8423 | window_initialized = 1; | |
7ab12479 JB |
8424 | } |
8425 | ||
67492200 | 8426 | void |
971de7fb | 8427 | init_window (void) |
67492200 GM |
8428 | { |
8429 | Vwindow_list = Qnil; | |
8430 | } | |
8431 | ||
dfcf069d | 8432 | void |
971de7fb | 8433 | syms_of_window (void) |
7ab12479 | 8434 | { |
d67b4f80 | 8435 | Qscroll_up = intern_c_string ("scroll-up"); |
c525d842 CY |
8436 | staticpro (&Qscroll_up); |
8437 | ||
d67b4f80 | 8438 | Qscroll_down = intern_c_string ("scroll-down"); |
c525d842 CY |
8439 | staticpro (&Qscroll_down); |
8440 | ||
a4b000fb JL |
8441 | Qscroll_command = intern_c_string ("scroll-command"); |
8442 | staticpro (&Qscroll_command); | |
8443 | ||
8444 | Fput (Qscroll_up, Qscroll_command, Qt); | |
8445 | Fput (Qscroll_down, Qscroll_command, Qt); | |
8446 | ||
d67b4f80 | 8447 | Qwindow_size_fixed = intern_c_string ("window-size-fixed"); |
8a37516b | 8448 | staticpro (&Qwindow_size_fixed); |
c0e7ccd3 | 8449 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 8450 | |
543f5fb1 RS |
8451 | staticpro (&Qwindow_configuration_change_hook); |
8452 | Qwindow_configuration_change_hook | |
d67b4f80 | 8453 | = intern_c_string ("window-configuration-change-hook"); |
543f5fb1 | 8454 | |
d67b4f80 | 8455 | Qwindowp = intern_c_string ("windowp"); |
7ab12479 JB |
8456 | staticpro (&Qwindowp); |
8457 | ||
d67b4f80 | 8458 | Qwindow_configuration_p = intern_c_string ("window-configuration-p"); |
3f8ab7bd RS |
8459 | staticpro (&Qwindow_configuration_p); |
8460 | ||
d67b4f80 | 8461 | Qwindow_live_p = intern_c_string ("window-live-p"); |
806b4d9b | 8462 | staticpro (&Qwindow_live_p); |
605be8af | 8463 | |
b9e809c2 MR |
8464 | Qwindow_deletable_p = intern_c_string ("window-deletable-p"); |
8465 | staticpro (&Qwindow_deletable_p); | |
8466 | ||
8467 | Qdelete_window = intern_c_string ("delete-window"); | |
8468 | staticpro (&Qdelete_window); | |
8469 | ||
8470 | Qresize_root_window = intern_c_string ("resize-root-window"); | |
8471 | staticpro (&Qresize_root_window); | |
8472 | ||
8473 | Qresize_root_window_vertically = intern_c_string ("resize-root-window-vertically"); | |
8474 | staticpro (&Qresize_root_window_vertically); | |
8475 | ||
8476 | Qsafe = intern_c_string ("safe"); | |
8477 | staticpro (&Qsafe); | |
8478 | ||
d67b4f80 | 8479 | Qdisplay_buffer = intern_c_string ("display-buffer"); |
87478b52 SM |
8480 | staticpro (&Qdisplay_buffer); |
8481 | ||
b9e809c2 MR |
8482 | Qreplace_buffer_in_windows = intern_c_string ("replace-buffer-in-windows"); |
8483 | staticpro (&Qreplace_buffer_in_windows); | |
8484 | ||
8485 | Qrecord_window_buffer = intern_c_string ("record-window-buffer"); | |
8486 | staticpro (&Qrecord_window_buffer); | |
8487 | ||
8488 | Qget_mru_window = intern_c_string ("get-mru-window"); | |
8489 | staticpro (&Qget_mru_window); | |
8490 | ||
d67b4f80 | 8491 | Qtemp_buffer_show_hook = intern_c_string ("temp-buffer-show-hook"); |
a58ec57d RS |
8492 | staticpro (&Qtemp_buffer_show_hook); |
8493 | ||
b9e809c2 MR |
8494 | Qabove = intern_c_string ("above"); |
8495 | staticpro (&Qabove); | |
8496 | ||
8497 | Qbelow = intern_c_string ("below"); | |
8498 | staticpro (&Qbelow); | |
8499 | ||
8500 | Qauto_buffer_name = intern_c_string ("auto-buffer-name"); | |
8501 | staticpro (&Qauto_buffer_name); | |
8502 | ||
67492200 | 8503 | staticpro (&Vwindow_list); |
8bfb170b KS |
8504 | |
8505 | minibuf_selected_window = Qnil; | |
3dbab091 | 8506 | staticpro (&minibuf_selected_window); |
67492200 | 8507 | |
c876b227 | 8508 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 8509 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
8510 | window_scroll_preserve_hpos = -1; |
8511 | window_scroll_preserve_vpos = -1; | |
66d43aea | 8512 | |
29208e82 | 8513 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
8514 | doc: /* Non-nil means call as function to display a help buffer. |
8515 | The function is called with one argument, the buffer to be displayed. | |
8516 | Used by `with-output-to-temp-buffer'. | |
8517 | If this function is used, then it must do the entire job of showing | |
8518 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
8519 | Vtemp_buffer_show_function = Qnil; |
8520 | ||
29208e82 | 8521 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 8522 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
8523 | Vminibuf_scroll_window = Qnil; |
8524 | ||
29208e82 | 8525 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 8526 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
8527 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
8528 | is displayed in the `mode-line' face. */); | |
8529 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 8530 | |
29208e82 | 8531 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 8532 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
8533 | Vother_window_scroll_buffer = Qnil; |
8534 | ||
29208e82 | 8535 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e56263e5 KS |
8536 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
8537 | auto_window_vscroll_p = 1; | |
8538 | ||
29208e82 | 8539 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
fdb82f93 | 8540 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
8541 | next_screen_context_lines = 2; |
8542 | ||
29208e82 | 8543 | DEFVAR_INT ("window-min-height", window_min_height, |
047aaeb9 MR |
8544 | doc: /* Allow deleting windows less than this tall. |
8545 | The value is measured in line units. If a window wants a modeline it | |
8546 | is counted as one line. | |
8547 | ||
8548 | Emacs honors settings of this variable when enlarging or shrinking | |
8549 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
8550 | window_min_height = 4; |
8551 | ||
29208e82 | 8552 | DEFVAR_INT ("window-min-width", window_min_width, |
047aaeb9 MR |
8553 | doc: /* Allow deleting windows less than this wide. |
8554 | The value is measured in characters and includes any fringes or | |
8555 | the scrollbar. | |
8556 | ||
8557 | Emacs honors settings of this variable when enlarging or shrinking | |
8558 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
8559 | window_min_width = 10; |
8560 | ||
5500c422 | 8561 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 8562 | Vscroll_preserve_screen_position, |
c876b227 | 8563 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
8564 | A value of nil means point does not keep its screen position except |
8565 | at the scroll margin or window boundary respectively. | |
8566 | A value of t means point keeps its screen position if the scroll | |
8567 | command moved it vertically out of the window, e.g. when scrolling | |
8568 | by full screens. | |
9013a7f8 | 8569 | Any other value means point always keeps its screen position. |
a4b000fb JL |
8570 | Scroll commands should have the `scroll-command' property |
8571 | on their symbols to be controlled by this variable. */); | |
5500c422 | 8572 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 8573 | |
29208e82 | 8574 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
8575 | doc: /* Type of marker to use for `window-point'. */); |
8576 | Vwindow_point_insertion_type = Qnil; | |
8577 | ||
543f5fb1 | 8578 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 8579 | Vwindow_configuration_change_hook, |
fdb82f93 | 8580 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
8581 | The buffer-local part is run once per window, with the relevant window |
8582 | selected; while the global part is run only once for the modified frame, | |
8583 | with the relevant frame selected. */); | |
543f5fb1 RS |
8584 | Vwindow_configuration_change_hook = Qnil; |
8585 | ||
29208e82 | 8586 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
666e158e | 8587 | doc: /* If non-nil, then the `recenter' command with a nil argument |
6e6e5760 | 8588 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
8589 | frame to be redrawn only if it is a tty frame. */); |
8590 | Vrecenter_redisplay = Qtty; | |
8591 | ||
1a13852e MR |
8592 | DEFVAR_LISP ("window-splits", Vwindow_splits, |
8593 | doc: /* Non-nil means splitting windows is handled specially. | |
8594 | If this variable is nil, splitting a window gets the entire screen space | |
8595 | for displaying the new window from the window to split. If this | |
8596 | variable is non-nil, splitting a window may resize all windows in the | |
8597 | same combination. This also allows to split a window that is otherwise | |
8598 | too small or of fixed size. | |
8599 | ||
8600 | The value of this variable is also assigned to the split status of the | |
8601 | new window and, provided the old and new window form a new combination, | |
8602 | to the window that was split as well. The split status of a window can | |
8603 | be retrieved with the function `window-splits' and altered by the | |
8604 | function `set-window-splits'. | |
8605 | ||
8606 | If the value of the variable `window-nest' is non-nil, the space for the | |
8607 | new window is exclusively taken from the window that shall be split, but | |
8608 | the split status of the window that is split as well as that of the new | |
8609 | window are still set to the value of this variable. */); | |
8610 | Vwindow_splits = Qnil; | |
8611 | ||
8612 | DEFVAR_LISP ("window-nest", Vwindow_nest, | |
8613 | doc: /* Non-nil means splitting a window makes a new parent window. | |
8614 | If this variable is nil, splitting a window will create a new parent | |
8615 | window only if the window has no parent window or the window shall | |
8616 | become a combination orthogonal to the one it it is part of. | |
8617 | ||
8618 | If this variable is non-nil, splitting a window always creates a new | |
8619 | parent window. If all splits behave this way, each frame's window tree | |
8620 | is a binary tree and every window but the frame's root window has | |
8621 | exactly one sibling. | |
8622 | ||
8623 | The value of this variable is also assigned to the nest status of the | |
8624 | new parent window. The nest status of a window can be retrieved via the | |
8625 | function `window-nest' and altered by the function `set-window-nest'. */); | |
8626 | Vwindow_nest = Qnil; | |
666e158e | 8627 | |
7ab12479 JB |
8628 | defsubr (&Sselected_window); |
8629 | defsubr (&Sminibuffer_window); | |
8630 | defsubr (&Swindow_minibuffer_p); | |
8631 | defsubr (&Swindowp); | |
806b4d9b | 8632 | defsubr (&Swindow_live_p); |
727e958e MR |
8633 | defsubr (&Swindow_frame); |
8634 | defsubr (&Sframe_root_window); | |
8635 | defsubr (&Sframe_first_window); | |
8636 | defsubr (&Sframe_selected_window); | |
8637 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 8638 | defsubr (&Spos_visible_in_window_p); |
536833ab | 8639 | defsubr (&Swindow_line_height); |
496e208e | 8640 | defsubr (&Swindow_clone_number); |
7ab12479 | 8641 | defsubr (&Swindow_buffer); |
bf60a96b MR |
8642 | defsubr (&Swindow_parent); |
8643 | defsubr (&Swindow_vchild); | |
8644 | defsubr (&Swindow_hchild); | |
8645 | defsubr (&Swindow_next); | |
8646 | defsubr (&Swindow_prev); | |
496e208e MR |
8647 | defsubr (&Swindow_splits); |
8648 | defsubr (&Sset_window_splits); | |
8649 | defsubr (&Swindow_nest); | |
8650 | defsubr (&Sset_window_nest); | |
abde8f8c MR |
8651 | defsubr (&Swindow_use_time); |
8652 | defsubr (&Swindow_top_line); | |
8653 | defsubr (&Swindow_left_column); | |
8654 | defsubr (&Swindow_total_size); | |
496e208e MR |
8655 | defsubr (&Swindow_normal_size); |
8656 | defsubr (&Swindow_new_total); | |
8657 | defsubr (&Swindow_new_normal); | |
8658 | defsubr (&Sset_window_new_total); | |
8659 | defsubr (&Sset_window_new_normal); | |
1a13852e | 8660 | defsubr (&Sresize_window_apply); |
abde8f8c | 8661 | defsubr (&Swindow_body_size); |
7ab12479 JB |
8662 | defsubr (&Swindow_hscroll); |
8663 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
8664 | defsubr (&Swindow_redisplay_end_trigger); |
8665 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 8666 | defsubr (&Swindow_edges); |
c99a9eb3 | 8667 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 8668 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
8669 | defsubr (&Swindow_inside_edges); |
8670 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 8671 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
8672 | defsubr (&Scoordinates_in_window_p); |
8673 | defsubr (&Swindow_at); | |
7ab12479 JB |
8674 | defsubr (&Swindow_point); |
8675 | defsubr (&Swindow_start); | |
8676 | defsubr (&Swindow_end); | |
8677 | defsubr (&Sset_window_point); | |
8678 | defsubr (&Sset_window_start); | |
8679 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 8680 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
8681 | defsubr (&Swindow_display_table); |
8682 | defsubr (&Sset_window_display_table); | |
8683 | defsubr (&Snext_window); | |
8684 | defsubr (&Sprevious_window); | |
8685 | defsubr (&Sother_window); | |
7ab12479 JB |
8686 | defsubr (&Sget_buffer_window); |
8687 | defsubr (&Sdelete_other_windows); | |
8688 | defsubr (&Sdelete_windows_on); | |
8689 | defsubr (&Sreplace_buffer_in_windows); | |
8690 | defsubr (&Sdelete_window); | |
1a13852e MR |
8691 | defsubr (&Sdelete_other_windows_internal); |
8692 | defsubr (&Sdelete_window_internal); | |
8693 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 8694 | defsubr (&Sset_window_buffer); |
496e208e | 8695 | defsubr (&Sset_window_clone_number); |
1a13852e | 8696 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 8697 | defsubr (&Sselect_window); |
6b61353c | 8698 | defsubr (&Sforce_window_update); |
3e21b6a7 | 8699 | defsubr (&Stemp_output_buffer_show); |
7ab12479 | 8700 | defsubr (&Ssplit_window); |
1a13852e | 8701 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
8702 | defsubr (&Senlarge_window); |
8703 | defsubr (&Sshrink_window); | |
0d384044 | 8704 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
8705 | defsubr (&Sscroll_up); |
8706 | defsubr (&Sscroll_down); | |
8707 | defsubr (&Sscroll_left); | |
8708 | defsubr (&Sscroll_right); | |
ccd0664b | 8709 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 8710 | defsubr (&Sscroll_other_window); |
fa832261 | 8711 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 8712 | defsubr (&Srecenter); |
81fe0836 | 8713 | defsubr (&Swindow_text_height); |
7ab12479 JB |
8714 | defsubr (&Smove_to_window_line); |
8715 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 8716 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
8717 | defsubr (&Sset_window_configuration); |
8718 | defsubr (&Scurrent_window_configuration); | |
c16e1cc3 | 8719 | defsubr (&Swindow_tree); |
5500c422 GM |
8720 | defsubr (&Sset_window_margins); |
8721 | defsubr (&Swindow_margins); | |
949cf20f KS |
8722 | defsubr (&Sset_window_fringes); |
8723 | defsubr (&Swindow_fringes); | |
8724 | defsubr (&Sset_window_scroll_bars); | |
8725 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
8726 | defsubr (&Swindow_vscroll); |
8727 | defsubr (&Sset_window_vscroll); | |
2f8274be | 8728 | defsubr (&Scompare_window_configurations); |
67492200 | 8729 | defsubr (&Swindow_list); |
abde8f8c | 8730 | defsubr (&Swindow_list_1); |
496e208e MR |
8731 | defsubr (&Swindow_prev_buffers); |
8732 | defsubr (&Sset_window_prev_buffers); | |
8733 | defsubr (&Swindow_next_buffers); | |
8734 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
8735 | defsubr (&Swindow_parameters); |
8736 | defsubr (&Swindow_parameter); | |
8737 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
8738 | } |
8739 | ||
dfcf069d | 8740 | void |
971de7fb | 8741 | keys_of_window (void) |
7ab12479 JB |
8742 | { |
8743 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
8744 | initial_define_key (control_x_map, '2', "split-window"); | |
8745 | initial_define_key (control_x_map, '0', "delete-window"); | |
8746 | initial_define_key (control_x_map, 'o', "other-window"); | |
8747 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
8748 | initial_define_key (control_x_map, '<', "scroll-left"); | |
8749 | initial_define_key (control_x_map, '>', "scroll-right"); | |
8750 | ||
32129746 | 8751 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 8752 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 8753 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 8754 | } |