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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 | |
9397e56f | 53 | Lisp_Object Qwindowp, Qwindow_live_p; |
b9e809c2 | 54 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 55 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 56 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 57 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_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 | ||
f57e2426 J |
62 | static int displayed_window_lines (struct window *); |
63 | static struct window *decode_window (Lisp_Object); | |
64 | static int count_windows (struct window *); | |
65 | static int get_leaf_windows (struct window *, struct window **, int); | |
66 | static void window_scroll (Lisp_Object, int, int, int); | |
67 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); | |
68 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 69 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
70 | static Lisp_Object window_list (void); |
71 | static int add_window_to_list (struct window *, void *); | |
72 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
73 | Lisp_Object); | |
74 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
75 | Lisp_Object, int); | |
76 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
77 | Lisp_Object *); | |
2f7c71a1 | 78 | static void foreach_window (struct frame *, |
f95464e4 | 79 | int (* fn) (struct window *, void *), |
2f7c71a1 | 80 | void *); |
f57e2426 J |
81 | static int foreach_window_1 (struct window *, |
82 | int (* fn) (struct window *, void *), | |
83 | void *); | |
84 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
d615d6d2 MR |
85 | static int window_resize_check (struct window *, int); |
86 | static void window_resize_apply (struct window *, int); | |
7c82f3e2 | 87 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 88 | |
7ab12479 JB |
89 | /* This is the window in which the terminal's cursor should |
90 | be left when nothing is being done with it. This must | |
91 | always be a leaf window, and its buffer is selected by | |
92 | the top level editing loop at the end of each command. | |
93 | ||
94 | This value is always the same as | |
44fa5b1e | 95 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
96 | Lisp_Object selected_window; |
97 | ||
67492200 GM |
98 | /* A list of all windows for use by next_window and Fwindow_list. |
99 | Functions creating or deleting windows should invalidate this cache | |
100 | by setting it to nil. */ | |
67492200 GM |
101 | Lisp_Object Vwindow_list; |
102 | ||
5500c422 GM |
103 | /* The mini-buffer window of the selected frame. |
104 | Note that you cannot test for mini-bufferness of an arbitrary window | |
105 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
106 | the selected window. */ |
107 | Lisp_Object minibuf_window; | |
108 | ||
3f49fddc KS |
109 | /* Non-nil means it is the window whose mode line should be |
110 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 111 | Lisp_Object minibuf_selected_window; |
3f49fddc | 112 | |
a58ec57d | 113 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 114 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 115 | |
7ab12479 JB |
116 | /* Incremented for each window created. */ |
117 | static int sequence_number; | |
118 | ||
5b03d3c0 RS |
119 | /* Nonzero after init_window_once has finished. */ |
120 | static int window_initialized; | |
121 | ||
543f5fb1 | 122 | /* Hook to run when window config changes. */ |
eeca6f6f | 123 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 124 | |
66d43aea | 125 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 126 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 127 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 128 | |
c876b227 | 129 | /* Same for window_scroll_line_based. */ |
c876b227 SM |
130 | static int window_scroll_preserve_hpos; |
131 | static int window_scroll_preserve_vpos; | |
f230ecc9 MR |
132 | \f |
133 | static struct window * | |
134 | decode_window (register Lisp_Object window) | |
135 | { | |
136 | if (NILP (window)) | |
137 | return XWINDOW (selected_window); | |
c876b227 | 138 | |
f230ecc9 MR |
139 | CHECK_LIVE_WINDOW (window); |
140 | return XWINDOW (window); | |
141 | } | |
142 | ||
143 | static struct window * | |
144 | decode_any_window (register Lisp_Object window) | |
145 | { | |
146 | if (NILP (window)) | |
147 | return XWINDOW (selected_window); | |
148 | ||
149 | CHECK_WINDOW (window); | |
150 | return XWINDOW (window); | |
151 | } | |
666e158e | 152 | |
7ab12479 | 153 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 154 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 155 | (Lisp_Object object) |
7ab12479 | 156 | { |
413430c5 | 157 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
158 | } |
159 | ||
806b4d9b | 160 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 MR |
161 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
162 | A live window is a window that displays a buffer. */) | |
5842a27b | 163 | (Lisp_Object object) |
605be8af | 164 | { |
9e571f49 | 165 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 166 | } |
727e958e MR |
167 | \f |
168 | /* Frames and windows. */ | |
169 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
170 | doc: /* Return the frame that window WINDOW is on. | |
171 | WINDOW can be any window and defaults to the selected one. */) | |
172 | (Lisp_Object window) | |
173 | { | |
174 | return decode_any_window (window)->frame; | |
175 | } | |
176 | ||
177 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
178 | doc: /* Return the root window of FRAME_OR_WINDOW. | |
179 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
180 | Else if FRAME_OR_WINDOW denotes any window, return the root window of | |
181 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
182 | the root window of that frame. */) | |
183 | (Lisp_Object frame_or_window) | |
184 | { | |
185 | Lisp_Object window; | |
186 | ||
187 | if (NILP (frame_or_window)) | |
188 | window = SELECTED_FRAME ()->root_window; | |
189 | else if (WINDOWP (frame_or_window)) | |
190 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
191 | else | |
192 | { | |
193 | CHECK_LIVE_FRAME (frame_or_window); | |
194 | window = XFRAME (frame_or_window)->root_window; | |
195 | } | |
196 | ||
197 | return window; | |
198 | } | |
199 | ||
200 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
201 | doc: /* Return the window used now for minibuffers. | |
202 | If the optional argument FRAME is specified, return the minibuffer window | |
203 | used by that frame. */) | |
204 | (Lisp_Object frame) | |
205 | { | |
206 | if (NILP (frame)) | |
207 | frame = selected_frame; | |
208 | CHECK_LIVE_FRAME (frame); | |
209 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
210 | } | |
211 | ||
212 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
213 | Swindow_minibuffer_p, 0, 1, 0, | |
214 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
215 | WINDOW can be any window and defaults to the selected one. */) | |
216 | (Lisp_Object window) | |
217 | { | |
218 | return MINI_WINDOW_P (decode_any_window (window)) ? Qt : Qnil; | |
219 | } | |
220 | ||
221 | /* Don't move this to window.el - this must be a safe routine. */ | |
222 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
223 | doc: /* Return the topmost, leftmost live window on FRAME_OR_WINDOW. | |
224 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
225 | Else if FRAME_OR_WINDOW denotes any window, return the first window of | |
226 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
227 | the first window of that frame. */) | |
228 | (Lisp_Object frame_or_window) | |
229 | { | |
230 | Lisp_Object window; | |
231 | ||
232 | if (NILP (frame_or_window)) | |
233 | window = SELECTED_FRAME ()->root_window; | |
234 | else if (WINDOWP (frame_or_window)) | |
235 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
236 | else | |
237 | { | |
238 | CHECK_LIVE_FRAME (frame_or_window); | |
239 | window = XFRAME (frame_or_window)->root_window; | |
240 | } | |
241 | ||
242 | while (NILP (XWINDOW (window)->buffer)) | |
243 | { | |
244 | if (! NILP (XWINDOW (window)->hchild)) | |
245 | window = XWINDOW (window)->hchild; | |
246 | else if (! NILP (XWINDOW (window)->vchild)) | |
247 | window = XWINDOW (window)->vchild; | |
248 | else | |
249 | abort (); | |
250 | } | |
251 | ||
252 | return window; | |
253 | } | |
254 | ||
255 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
256 | Sframe_selected_window, 0, 1, 0, | |
257 | doc: /* Return the selected window of FRAME_OR_WINDOW. | |
258 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
259 | Else if FRAME_OR_WINDOW denotes any window, return the selected window | |
260 | of that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
261 | the selected window of that frame. */) | |
262 | (Lisp_Object frame_or_window) | |
263 | { | |
264 | Lisp_Object window; | |
265 | ||
266 | if (NILP (frame_or_window)) | |
267 | window = SELECTED_FRAME ()->selected_window; | |
268 | else if (WINDOWP (frame_or_window)) | |
269 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; | |
270 | else | |
271 | { | |
272 | CHECK_LIVE_FRAME (frame_or_window); | |
273 | window = XFRAME (frame_or_window)->selected_window; | |
274 | } | |
275 | ||
276 | return window; | |
277 | } | |
278 | ||
279 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
280 | Sset_frame_selected_window, 2, 3, 0, | |
281 | doc: /* Set selected window of FRAME to WINDOW. | |
282 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
283 | is the selected frame, this makes WINDOW the selected window. Optional | |
284 | argument NORECORD non-nil means to neither change the order of recently | |
285 | selected windows nor the buffer list. WINDOW must denote a live window. | |
286 | Return WINDOW. */) | |
287 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
288 | { | |
289 | if (NILP (frame)) | |
290 | frame = selected_frame; | |
291 | ||
292 | CHECK_LIVE_FRAME (frame); | |
293 | CHECK_LIVE_WINDOW (window); | |
294 | ||
295 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
296 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
297 | ||
298 | if (EQ (frame, selected_frame)) | |
299 | return Fselect_window (window, norecord); | |
300 | else | |
301 | return XFRAME (frame)->selected_window = window; | |
302 | } | |
303 | ||
304 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
305 | doc: /* Return the selected window. | |
306 | The selected window is the window in which the standard cursor for | |
307 | selected windows appears and to which many commands apply. */) | |
308 | (void) | |
309 | { | |
310 | return selected_window; | |
311 | } | |
312 | ||
9397e56f MR |
313 | int window_select_count; |
314 | ||
727e958e MR |
315 | /* If select_window is called with inhibit_point_swap non-zero it will |
316 | not store point of the old selected window's buffer back into that | |
317 | window's pointm slot. This is needed by Fset_window_configuration to | |
318 | avoid that the display routine is called with selected_window set to | |
319 | Qnil causing a subsequent crash. */ | |
320 | static Lisp_Object | |
321 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
322 | { | |
323 | register struct window *w; | |
324 | register struct window *ow; | |
325 | struct frame *sf; | |
326 | ||
327 | CHECK_LIVE_WINDOW (window); | |
328 | ||
329 | w = XWINDOW (window); | |
330 | w->frozen_window_start_p = 0; | |
331 | ||
332 | if (NILP (norecord)) | |
333 | { | |
334 | ++window_select_count; | |
335 | XSETFASTINT (w->use_time, window_select_count); | |
336 | record_buffer (w->buffer); | |
337 | } | |
338 | ||
339 | if (EQ (window, selected_window) && !inhibit_point_swap) | |
340 | return window; | |
341 | ||
342 | sf = SELECTED_FRAME (); | |
343 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
344 | { | |
345 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
346 | /* Use this rather than Fhandle_switch_frame | |
347 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
348 | move around in the state where a minibuffer in a separate | |
349 | frame is active. */ | |
350 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
351 | /* Fselect_frame called us back so we've done all the work already. */ | |
352 | eassert (EQ (window, selected_window)); | |
353 | return window; | |
354 | } | |
355 | else | |
356 | sf->selected_window = window; | |
357 | ||
358 | /* Store the current buffer's actual point into the | |
359 | old selected window. It belongs to that window, | |
360 | and when the window is not selected, must be in the window. */ | |
361 | if (!inhibit_point_swap) | |
362 | { | |
363 | ow = XWINDOW (selected_window); | |
364 | if (! NILP (ow->buffer)) | |
365 | set_marker_both (ow->pointm, ow->buffer, | |
366 | BUF_PT (XBUFFER (ow->buffer)), | |
367 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
368 | } | |
369 | ||
370 | selected_window = window; | |
371 | ||
372 | Fset_buffer (w->buffer); | |
373 | ||
374 | BVAR (XBUFFER (w->buffer), last_selected_window) = window; | |
375 | ||
376 | /* Go to the point recorded in the window. | |
377 | This is important when the buffer is in more | |
378 | than one window. It also matters when | |
379 | redisplay_window has altered point after scrolling, | |
380 | because it makes the change only in the window. */ | |
381 | { | |
382 | register EMACS_INT new_point = marker_position (w->pointm); | |
383 | if (new_point < BEGV) | |
384 | SET_PT (BEGV); | |
385 | else if (new_point > ZV) | |
386 | SET_PT (ZV); | |
387 | else | |
388 | SET_PT (new_point); | |
389 | } | |
390 | ||
391 | windows_or_buffers_changed++; | |
392 | return window; | |
393 | } | |
394 | ||
395 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
396 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
397 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
398 | window. Return WINDOW. | |
399 | ||
400 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
401 | front of the buffer list and do not make this window the most recently | |
402 | selected one. | |
605be8af | 403 | |
727e958e MR |
404 | Note that the main editor command loop sets the current buffer to the |
405 | buffer of the selected window before each command. */) | |
406 | (register Lisp_Object window, Lisp_Object norecord) | |
407 | { | |
408 | return select_window (window, norecord, 0); | |
409 | } | |
410 | \f | |
bf60a96b MR |
411 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
412 | doc: /* Return the buffer that WINDOW is displaying. | |
413 | WINDOW can be any window and defaults to the selected one. | |
414 | If WINDOW is an internal window return nil. */) | |
415 | (Lisp_Object window) | |
416 | { | |
417 | return decode_any_window (window)->buffer; | |
418 | } | |
419 | ||
420 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
421 | doc: /* Return WINDOW's parent window. | |
422 | WINDOW can be any window and defaults to the selected one. | |
423 | Return nil if WINDOW has no parent. */) | |
424 | (Lisp_Object window) | |
425 | { | |
426 | return decode_any_window (window)->parent; | |
427 | } | |
428 | ||
d68443dc MR |
429 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
430 | doc: /* Return WINDOW's topmost child window. | |
bf60a96b | 431 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 432 | Return nil if WINDOW is not a vertical combination. */) |
bf60a96b MR |
433 | (Lisp_Object window) |
434 | { | |
435 | return decode_any_window (window)->vchild; | |
436 | } | |
437 | ||
d68443dc MR |
438 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
439 | doc: /* Return WINDOW's leftmost child window. | |
bf60a96b | 440 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 441 | Return nil if WINDOW is not a horizontal combination. */) |
bf60a96b MR |
442 | (Lisp_Object window) |
443 | { | |
444 | return decode_any_window (window)->hchild; | |
445 | } | |
446 | ||
d68443dc MR |
447 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
448 | doc: /* Return WINDOW's next sibling window. | |
bf60a96b | 449 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 450 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
451 | (Lisp_Object window) |
452 | { | |
453 | return decode_any_window (window)->next; | |
454 | } | |
455 | ||
d68443dc MR |
456 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
457 | doc: /* Return WINDOW's previous sibling window. | |
bf60a96b | 458 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 459 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
460 | (Lisp_Object window) |
461 | { | |
462 | return decode_any_window (window)->prev; | |
463 | } | |
67492200 | 464 | |
496e208e MR |
465 | DEFUN ("window-splits", Fwindow_splits, Swindow_splits, 0, 1, 0, |
466 | doc: /* Return splits status for WINDOW. | |
467 | WINDOW can be any window and defaults to the selected one. | |
7ab12479 | 468 | |
496e208e MR |
469 | If the value returned by this function is nil and WINDOW is resized, the |
470 | corresponding space is preferably taken from (or given to) WINDOW's | |
471 | right sibling. When WINDOW is deleted, its space is given to its left | |
472 | sibling. | |
0cc1039f | 473 | |
496e208e MR |
474 | If the value returned by this function is non-nil, resizing and deleting |
475 | WINDOW may resize all windows in the same combination. */) | |
476 | (Lisp_Object window) | |
7ab12479 | 477 | { |
496e208e | 478 | return decode_any_window (window)->splits; |
7ab12479 | 479 | } |
53bb6b99 | 480 | |
496e208e MR |
481 | DEFUN ("set-window-splits", Fset_window_splits, Sset_window_splits, 2, 2, 0, |
482 | doc: /* Set splits status of WINDOW to STATUS. | |
483 | WINDOW can be any window and defaults to the selected one. Return | |
484 | STATUS. | |
536833ab | 485 | |
496e208e MR |
486 | If STATUS is nil and WINDOW is later resized, the corresponding space is |
487 | preferably taken from (or given to) WINDOW's right sibling. When WINDOW | |
488 | is deleted, its space is given to its left sibling. | |
536833ab | 489 | |
496e208e MR |
490 | If STATUS is non-nil, resizing and deleting WINDOW may resize all |
491 | windows in the same combination. */) | |
492 | (Lisp_Object window, Lisp_Object status) | |
b3a10345 | 493 | { |
496e208e | 494 | register struct window *w = decode_any_window (window); |
b3a10345 | 495 | |
496e208e | 496 | w->splits = status; |
b3a10345 | 497 | |
496e208e MR |
498 | return w->splits; |
499 | } | |
7bbc67d2 | 500 | |
496e208e MR |
501 | DEFUN ("window-nest", Fwindow_nest, Swindow_nest, 0, 1, 0, |
502 | doc: /* Return nest status of WINDOW. | |
503 | WINDOW can be any window and defaults to the selected one. | |
536833ab | 504 | |
496e208e MR |
505 | If the return value is nil, subwindows of WINDOW can be recombined with |
506 | WINDOW's siblings. A return value of non-nil means that subwindows of | |
507 | WINDOW are never \(re-)combined with WINDOW's siblings. */) | |
508 | (Lisp_Object window) | |
509 | { | |
510 | return decode_any_window (window)->nest; | |
511 | } | |
b3a10345 | 512 | |
496e208e MR |
513 | DEFUN ("set-window-nest", Fset_window_nest, Sset_window_nest, 2, 2, 0, |
514 | doc: /* Set nest status of WINDOW to STATUS. | |
515 | WINDOW can be any window and defaults to the selected one. Return | |
516 | STATUS. | |
536833ab | 517 | |
496e208e MR |
518 | If STATUS is nil, subwindows of WINDOW can be recombined with WINDOW's |
519 | siblings. STATUS non-nil means that subwindows of WINDOW are never | |
520 | \(re-)combined with WINDOW's siblings. */) | |
521 | (Lisp_Object window, Lisp_Object status) | |
522 | { | |
523 | register struct window *w = decode_any_window (window); | |
536833ab | 524 | |
496e208e | 525 | w->nest = status; |
b3a10345 | 526 | |
496e208e MR |
527 | return w->nest; |
528 | } | |
b3a10345 | 529 | |
496e208e MR |
530 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
531 | doc: /* Return WINDOW's use time. | |
532 | WINDOW defaults to the selected window. The window with the highest use | |
533 | time is the most recently selected one. The window with the lowest use | |
534 | time is the least recently selected one. */) | |
535 | (Lisp_Object window) | |
536 | { | |
537 | return decode_window (window)->use_time; | |
b3a10345 | 538 | } |
abde8f8c MR |
539 | \f |
540 | DEFUN ("window-total-size", Fwindow_total_size, Swindow_total_size, 0, 2, 0, | |
541 | doc: /* Return the total number of lines of WINDOW. | |
542 | WINDOW can be any window and defaults to the selected one. The return | |
543 | value includes WINDOW's mode line and header line, if any. If WINDOW | |
544 | is internal, the return value is the sum of the total number of lines | |
545 | of WINDOW's child windows if these are vertically combined and the | |
546 | height of WINDOW's first child otherwise. | |
547 | ||
548 | Optional argument HORIZONTAL non-nil means return the total number of | |
549 | columns of WINDOW. In this case the return value includes any vertical | |
550 | dividers or scrollbars of WINDOW. If WINDOW is internal, the return | |
551 | value is the sum of the total number of columns of WINDOW's child | |
552 | windows if they are horizontally combined and the width of WINDOW's | |
553 | first child otherwise. */) | |
554 | (Lisp_Object window, Lisp_Object horizontal) | |
555 | { | |
556 | if (NILP (horizontal)) | |
557 | return decode_any_window (window)->total_lines; | |
558 | else | |
559 | return decode_any_window (window)->total_cols; | |
560 | } | |
b3a10345 | 561 | |
496e208e MR |
562 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
563 | doc: /* Return new total size of WINDOW. | |
564 | WINDOW defaults to the selected window. */) | |
565 | (Lisp_Object window) | |
566 | { | |
567 | return decode_any_window (window)->new_total; | |
568 | } | |
569 | ||
570 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
571 | doc: /* Return normal height of WINDOW. | |
572 | WINDOW can be any window and defaults to the selected one. Optional | |
573 | argument HORIZONTAL non-nil means return normal width of WINDOW. */) | |
574 | (Lisp_Object window, Lisp_Object horizontal) | |
575 | { | |
576 | if (NILP (horizontal)) | |
577 | return decode_any_window (window)->normal_lines; | |
578 | else | |
579 | return decode_any_window (window)->normal_cols; | |
580 | } | |
581 | ||
582 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
583 | doc: /* Return new normal size of WINDOW. | |
584 | WINDOW can be any window and defaults to the selected one. */) | |
585 | (Lisp_Object window) | |
586 | { | |
587 | return decode_any_window (window)->new_normal; | |
588 | } | |
589 | ||
abde8f8c MR |
590 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
591 | doc: /* Return left column of WINDOW. | |
592 | WINDOW can be any window and defaults to the selected one. */) | |
593 | (Lisp_Object window) | |
594 | { | |
595 | return decode_any_window (window)->left_col; | |
596 | } | |
597 | ||
598 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
599 | doc: /* Return top line 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)->top_line; | |
604 | } | |
605 | ||
606 | /* Return the number of lines of W's body. Don't count any mode or | |
607 | header line of W. */ | |
608 | ||
46a4ce9e | 609 | static int |
abde8f8c MR |
610 | window_body_lines (struct window *w) |
611 | { | |
612 | int height = XFASTINT (w->total_lines); | |
613 | ||
614 | if (!MINI_WINDOW_P (w)) | |
615 | { | |
616 | if (WINDOW_WANTS_MODELINE_P (w)) | |
617 | --height; | |
618 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
619 | --height; | |
620 | } | |
621 | ||
622 | return height; | |
623 | } | |
624 | ||
625 | /* Return the number of columns of W's body. Don't count columns | |
626 | occupied by the scroll bar or the vertical bar separating W from its | |
627 | right sibling. On window-systems don't count fringes or display | |
628 | margins either. */ | |
629 | ||
630 | int | |
631 | window_body_cols (struct window *w) | |
632 | { | |
633 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
634 | int width = XINT (w->total_cols); | |
635 | ||
636 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
637 | /* Scroll bars occupy a few columns. */ | |
638 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
639 | else if (!FRAME_WINDOW_P (f) | |
640 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
641 | /* The column of `|' characters separating side-by-side windows | |
642 | occupies one column only. */ | |
643 | width -= 1; | |
644 | ||
645 | if (FRAME_WINDOW_P (f)) | |
646 | /* On window-systems, fringes and display margins cannot be | |
647 | used for normal text. */ | |
648 | width -= (WINDOW_FRINGE_COLS (w) | |
649 | + WINDOW_LEFT_MARGIN_COLS (w) | |
650 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
651 | ||
652 | return width; | |
653 | } | |
654 | ||
655 | DEFUN ("window-body-size", Fwindow_body_size, Swindow_body_size, 0, 2, 0, | |
656 | doc: /* Return the number of lines of WINDOW's body. | |
657 | WINDOW must be a live window and defaults to the selected one. The | |
658 | return value does not include WINDOW's mode line and header line, if | |
659 | any. | |
660 | ||
661 | Optional argument HORIZONTAL non-nil means return the number of columns | |
662 | of WINDOW's body. In this case, the return value does not include any | |
663 | vertical dividers or scroll bars owned by WINDOW. On a window-system | |
664 | the return value does not include the number of columns used for | |
665 | WINDOW's fringes or display margins either. */) | |
666 | (Lisp_Object window, Lisp_Object horizontal) | |
667 | { | |
668 | struct window *w = decode_any_window (window); | |
669 | ||
670 | if (NILP (horizontal)) | |
671 | return make_number (window_body_lines (w)); | |
672 | else | |
673 | return make_number (window_body_cols (w)); | |
674 | } | |
536833ab | 675 | |
7ab12479 | 676 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 677 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 678 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 679 | (Lisp_Object window) |
7ab12479 JB |
680 | { |
681 | return decode_window (window)->hscroll; | |
682 | } | |
683 | ||
684 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 685 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 686 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
687 | |
688 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 689 | window so that the location of point moves off-window. */) |
5842a27b | 690 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 691 | { |
ea68264b GM |
692 | struct window *w = decode_window (window); |
693 | int hscroll; | |
7ab12479 | 694 | |
b7826503 | 695 | CHECK_NUMBER (ncol); |
ea68264b | 696 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 697 | |
ea68264b GM |
698 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
699 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 700 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 701 | |
c67fa410 | 702 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
703 | return ncol; |
704 | } | |
705 | ||
190eb263 RS |
706 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
707 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 708 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 709 | WINDOW defaults to the selected window. |
fdb82f93 | 710 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 711 | (Lisp_Object window) |
190eb263 RS |
712 | { |
713 | return decode_window (window)->redisplay_end_trigger; | |
714 | } | |
715 | ||
716 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
717 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
718 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
719 | VALUE should be a buffer position (typically a marker) or nil. | |
720 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
721 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
722 | with two arguments: WINDOW, and the end trigger value. | |
723 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 724 | (register Lisp_Object window, Lisp_Object value) |
190eb263 RS |
725 | { |
726 | register struct window *w; | |
727 | ||
728 | w = decode_window (window); | |
729 | w->redisplay_end_trigger = value; | |
730 | return value; | |
731 | } | |
732 | ||
7ab12479 | 733 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 734 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
735 | The list has the form (LEFT TOP RIGHT BOTTOM). |
736 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
737 | all relative to 0, 0 at top left corner of frame. | |
738 | ||
739 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
740 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
741 | The edges include the space used by WINDOW's scroll bar, display | |
742 | margins, fringes, header line, and/or mode line. For the edges of | |
743 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 744 | (Lisp_Object window) |
7ab12479 | 745 | { |
6b61353c | 746 | register struct window *w = decode_any_window (window); |
7ab12479 | 747 | |
949cf20f KS |
748 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
749 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
750 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
751 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
752 | Qnil)))); | |
7ab12479 JB |
753 | } |
754 | ||
c99a9eb3 RS |
755 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
756 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
757 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
758 | the top left corner of the frame. | |
759 | ||
760 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
761 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
762 | The pixel edges include the space used by WINDOW's scroll bar, display | |
763 | margins, fringes, header line, and/or mode line. For the pixel edges | |
764 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 765 | (Lisp_Object window) |
c99a9eb3 | 766 | { |
6b61353c | 767 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
768 | |
769 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
770 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
771 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
772 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
773 | Qnil)))); | |
774 | } | |
775 | ||
9d5405ec J |
776 | static void |
777 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) | |
778 | { | |
779 | struct frame *f = XFRAME (w->frame); | |
780 | *add_y = f->top_pos; | |
781 | #ifdef FRAME_MENUBAR_HEIGHT | |
782 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
783 | #endif | |
bfeabdc3 JD |
784 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
785 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
786 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
787 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
788 | #endif | |
789 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
790 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
791 | #endif | |
792 | *add_x = f->left_pos; | |
bfeabdc3 JD |
793 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
794 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
795 | #endif | |
9d5405ec J |
796 | } |
797 | ||
798 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
799 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
800 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
801 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
802 | the top left corner of the display. | |
803 | ||
804 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
805 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
806 | The pixel edges include the space used by WINDOW's scroll bar, display | |
807 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 808 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 809 | (Lisp_Object window) |
9d5405ec J |
810 | { |
811 | register struct window *w = decode_any_window (window); | |
812 | int add_x, add_y; | |
ed3751c8 | 813 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
814 | |
815 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
816 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
817 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
818 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
819 | Qnil)))); | |
820 | } | |
821 | ||
c99a9eb3 RS |
822 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
823 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
824 | The list has the form (LEFT TOP RIGHT BOTTOM). |
825 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
826 | all relative to 0, 0 at top left corner of frame. | |
827 | ||
828 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
829 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
830 | The inside edges do not include the space used by the WINDOW's scroll | |
831 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 832 | (Lisp_Object window) |
c99a9eb3 | 833 | { |
6b61353c | 834 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
835 | |
836 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
837 | + WINDOW_LEFT_MARGIN_COLS (w) | |
838 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
839 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
840 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 841 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
842 | - WINDOW_RIGHT_MARGIN_COLS (w) |
843 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
844 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
845 | - WINDOW_MODE_LINE_LINES (w))); | |
846 | } | |
847 | ||
848 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 849 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
850 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
851 | the top left corner of the frame. | |
852 | ||
853 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
854 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
855 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 856 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 857 | (Lisp_Object window) |
c99a9eb3 | 858 | { |
6b61353c | 859 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
860 | |
861 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
862 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
863 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
864 | make_number (WINDOW_TOP_EDGE_Y (w) | |
865 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 866 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
867 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
868 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
869 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
870 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
871 | } | |
872 | ||
9d5405ec J |
873 | DEFUN ("window-inside-absolute-pixel-edges", |
874 | Fwindow_inside_absolute_pixel_edges, | |
875 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
876 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
877 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
878 | the top left corner of the display. | |
879 | ||
880 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
881 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
882 | The inside edges do not include the space used by WINDOW's scroll bar, | |
883 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 884 | (Lisp_Object window) |
9d5405ec J |
885 | { |
886 | register struct window *w = decode_any_window (window); | |
887 | int add_x, add_y; | |
ed3751c8 | 888 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
889 | |
890 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
891 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
892 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
893 | make_number (WINDOW_TOP_EDGE_Y (w) | |
894 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
895 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
896 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
897 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
898 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
899 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
900 | } | |
901 | ||
9173a8fb | 902 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 903 | If it is not, return ON_NOTHING; |
9173a8fb | 904 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 905 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 906 | if it is on the border between the window and its right sibling, |
341f3858 | 907 | return ON_VERTICAL_BORDER. |
9173a8fb | 908 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 909 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 910 | if it is in left or right fringe of the window, |
9173a8fb | 911 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 912 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 913 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
914 | |
915 | X and Y are frame relative pixel coordinates. */ | |
916 | ||
7442878f | 917 | static enum window_part |
9173a8fb | 918 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 919 | { |
b0228ace | 920 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
9173a8fb | 921 | int left_x, right_x; |
7442878f | 922 | enum window_part part; |
949cf20f KS |
923 | int ux = FRAME_COLUMN_WIDTH (f); |
924 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
925 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
926 | /* The width of the area where the vertical line can be dragged. |
927 | (Between mode lines for instance. */ | |
928 | int grabbable_width = ux; | |
949cf20f | 929 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb CY |
930 | int top_y = WINDOW_TOP_EDGE_Y (w); |
931 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
932 | ||
933 | /* Outside any interesting row? */ | |
934 | if (y < top_y || y >= bottom_y) | |
935 | return ON_NOTHING; | |
b0228ace | 936 | |
466539bc EZ |
937 | /* In what's below, we subtract 1 when computing right_x because we |
938 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
939 | if (w->pseudo_window_p) |
940 | { | |
941 | left_x = 0; | |
949cf20f | 942 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
943 | } |
944 | else | |
945 | { | |
949cf20f KS |
946 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
947 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 948 | } |
37962e60 | 949 | |
1cb794ba GM |
950 | /* On the mode line or header line? If it's near the start of |
951 | the mode or header line of window that's has a horizontal | |
952 | sibling, say it's on the vertical line. That's to be able | |
953 | to resize windows horizontally in case we're using toolkit | |
954 | scroll bars. */ | |
b0228ace | 955 | |
1cb794ba | 956 | if (WINDOW_WANTS_MODELINE_P (w) |
9173a8fb | 957 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 958 | { |
949cf20f KS |
959 | part = ON_MODE_LINE; |
960 | ||
961 | header_vertical_border_check: | |
b0228ace GM |
962 | /* We're somewhere on the mode line. We consider the place |
963 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 964 | as the vertical border. If scroll bars on the left, |
b0228ace | 965 | return the right window. */ |
9173a8fb CY |
966 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
967 | || WINDOW_RIGHTMOST_P (w)) | |
968 | && !WINDOW_LEFTMOST_P (w) | |
969 | && eabs (x - x0) < grabbable_width) | |
970 | return ON_VERTICAL_BORDER; | |
971 | ||
972 | /* Make sure we're not at the rightmost position of a | |
973 | mode-/header-line and there's yet another window on the | |
974 | right. (Bug#1372) */ | |
975 | else if ((WINDOW_RIGHTMOST_P (w) || x < x1) | |
976 | && eabs (x - x1) < grabbable_width) | |
977 | return ON_VERTICAL_BORDER; | |
978 | ||
979 | if (x < x0 || x >= x1) | |
cb639b8f KS |
980 | return ON_NOTHING; |
981 | ||
949cf20f | 982 | return part; |
b0228ace | 983 | } |
949cf20f KS |
984 | |
985 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
9173a8fb | 986 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 987 | { |
949cf20f KS |
988 | part = ON_HEADER_LINE; |
989 | goto header_vertical_border_check; | |
1cb794ba | 990 | } |
949cf20f | 991 | |
9173a8fb | 992 | if (x < x0 || x >= x1) return ON_NOTHING; |
cb639b8f | 993 | |
949cf20f | 994 | /* Outside any interesting column? */ |
9173a8fb CY |
995 | if (x < left_x || x > right_x) |
996 | return ON_SCROLL_BAR; | |
949cf20f KS |
997 | |
998 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
999 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1000 | |
949cf20f KS |
1001 | text_left = window_box_left (w, TEXT_AREA); |
1002 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1003 | ||
1004 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1005 | { |
447e9da0 | 1006 | if (!w->pseudo_window_p |
949cf20f | 1007 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1008 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1009 | && (eabs (x - right_x) < grabbable_width)) |
1010 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1011 | } |
9173a8fb CY |
1012 | /* Need to say "x > right_x" rather than >=, since on character |
1013 | terminals, the vertical line's x coordinate is right_x. */ | |
1014 | else if (!w->pseudo_window_p | |
1015 | && !WINDOW_RIGHTMOST_P (w) | |
1016 | && x > right_x - ux) | |
1017 | return ON_VERTICAL_BORDER; | |
1018 | ||
1019 | if (x < text_left) | |
949cf20f KS |
1020 | { |
1021 | if (lmargin_width > 0 | |
1022 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1023 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1024 | : (x < left_x + lmargin_width))) | |
1025 | return ON_LEFT_MARGIN; | |
1026 | ||
949cf20f KS |
1027 | return ON_LEFT_FRINGE; |
1028 | } | |
1029 | ||
9173a8fb | 1030 | if (x >= text_right) |
949cf20f KS |
1031 | { |
1032 | if (rmargin_width > 0 | |
1033 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1034 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1035 | : (x >= right_x - rmargin_width))) | |
1036 | return ON_RIGHT_MARGIN; | |
1037 | ||
949cf20f KS |
1038 | return ON_RIGHT_FRINGE; |
1039 | } | |
1040 | ||
1041 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1042 | return ON_TEXT; |
d5783c40 JB |
1043 | } |
1044 | ||
9173a8fb CY |
1045 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1046 | x-coordinate relative to part PART of window W. */ | |
1047 | int | |
1048 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1049 | { | |
1050 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1051 | ||
1052 | switch (part) | |
1053 | { | |
1054 | case ON_TEXT: | |
1055 | return x - window_box_left (w, TEXT_AREA); | |
1056 | ||
1057 | case ON_LEFT_FRINGE: | |
1058 | return x - left_x; | |
1059 | ||
1060 | case ON_RIGHT_FRINGE: | |
1061 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1062 | ||
1063 | case ON_LEFT_MARGIN: | |
1064 | return (x - left_x | |
1065 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1066 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1067 | ||
1068 | case ON_RIGHT_MARGIN: | |
1069 | return (x + 1 | |
1070 | - ((w->pseudo_window_p) | |
1071 | ? WINDOW_TOTAL_WIDTH (w) | |
1072 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1073 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1074 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1075 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1076 | } | |
1077 | ||
1078 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1079 | return 0; | |
1080 | } | |
1081 | ||
b0228ace | 1082 | |
d5783c40 | 1083 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1084 | Scoordinates_in_window_p, 2, 2, 0, |
1085 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
1086 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
1087 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1088 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1089 | frame. |
1090 | If COORDINATES are in the text portion of WINDOW, | |
1091 | the coordinates relative to the window are returned. | |
1092 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1093 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1094 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1095 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1096 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1097 | `vertical-line' is returned. |
1098 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1099 | or `right-margin' is returned. */) | |
5842a27b | 1100 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1101 | { |
5500c422 GM |
1102 | struct window *w; |
1103 | struct frame *f; | |
d5783c40 | 1104 | int x, y; |
5500c422 | 1105 | Lisp_Object lx, ly; |
d5783c40 | 1106 | |
6b61353c | 1107 | CHECK_WINDOW (window); |
5500c422 GM |
1108 | w = XWINDOW (window); |
1109 | f = XFRAME (w->frame); | |
b7826503 | 1110 | CHECK_CONS (coordinates); |
5500c422 GM |
1111 | lx = Fcar (coordinates); |
1112 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1113 | CHECK_NUMBER_OR_FLOAT (lx); |
1114 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1115 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1116 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1117 | |
9173a8fb | 1118 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1119 | { |
7442878f | 1120 | case ON_NOTHING: |
d5783c40 JB |
1121 | return Qnil; |
1122 | ||
7442878f | 1123 | case ON_TEXT: |
9173a8fb CY |
1124 | /* Convert X and Y to window relative pixel coordinates, and |
1125 | return the canonical char units. */ | |
1126 | x -= window_box_left (w, TEXT_AREA); | |
1127 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1128 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1129 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1130 | |
7442878f | 1131 | case ON_MODE_LINE: |
d5783c40 | 1132 | return Qmode_line; |
37962e60 | 1133 | |
7442878f | 1134 | case ON_VERTICAL_BORDER: |
e5d77022 | 1135 | return Qvertical_line; |
d5783c40 | 1136 | |
7442878f | 1137 | case ON_HEADER_LINE: |
045dee35 | 1138 | return Qheader_line; |
5500c422 | 1139 | |
7442878f GM |
1140 | case ON_LEFT_FRINGE: |
1141 | return Qleft_fringe; | |
177c0ea7 | 1142 | |
7442878f GM |
1143 | case ON_RIGHT_FRINGE: |
1144 | return Qright_fringe; | |
fbad6f9a | 1145 | |
49b996e7 GM |
1146 | case ON_LEFT_MARGIN: |
1147 | return Qleft_margin; | |
177c0ea7 | 1148 | |
49b996e7 GM |
1149 | case ON_RIGHT_MARGIN: |
1150 | return Qright_margin; | |
1151 | ||
6487f669 RS |
1152 | case ON_SCROLL_BAR: |
1153 | /* Historically we are supposed to return nil in this case. */ | |
1154 | return Qnil; | |
1155 | ||
d5783c40 JB |
1156 | default: |
1157 | abort (); | |
1158 | } | |
1159 | } | |
1160 | ||
67492200 GM |
1161 | |
1162 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1163 | Check if window W contains coordinates specified by USER_DATA which |
1164 | is actually a pointer to a struct check_window_data CW. | |
1165 | ||
1166 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1167 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1168 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1169 | zero from this function to stop iterating over windows. */ |
1170 | ||
1171 | struct check_window_data | |
1172 | { | |
1173 | Lisp_Object *window; | |
9173a8fb | 1174 | int x, y; |
341f3858 | 1175 | enum window_part *part; |
f95464e4 | 1176 | }; |
67492200 GM |
1177 | |
1178 | static int | |
971de7fb | 1179 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1180 | { |
f95464e4 | 1181 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1182 | enum window_part found; |
1183 | int continue_p = 1; | |
67492200 | 1184 | |
f95464e4 | 1185 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1186 | if (found != ON_NOTHING) |
67492200 | 1187 | { |
341f3858 | 1188 | *cw->part = found; |
f95464e4 | 1189 | XSETWINDOW (*cw->window, w); |
7442878f | 1190 | continue_p = 0; |
67492200 | 1191 | } |
177c0ea7 | 1192 | |
7442878f | 1193 | return continue_p; |
67492200 GM |
1194 | } |
1195 | ||
1196 | ||
5500c422 | 1197 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1198 | return it as a Lisp_Object. |
1199 | ||
1200 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1201 | set *PART to the id of that element. |
949cf20f | 1202 | |
341f3858 | 1203 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1204 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1205 | ||
1206 | This function was previously implemented with a loop cycling over | |
1207 | windows with Fnext_window, and starting with the frame's selected | |
1208 | window. It turned out that this doesn't work with an | |
1209 | implementation of next_window using Vwindow_list, because | |
1210 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1211 | tree of F when this function is called asynchronously from | |
1212 | note_mouse_highlight. The original loop didn't terminate in this | |
1213 | case. */ | |
5500c422 | 1214 | |
7ab12479 | 1215 | Lisp_Object |
9173a8fb CY |
1216 | window_from_coordinates (struct frame *f, int x, int y, |
1217 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1218 | { |
67492200 | 1219 | Lisp_Object window; |
f95464e4 | 1220 | struct check_window_data cw; |
341f3858 KS |
1221 | enum window_part dummy; |
1222 | ||
1223 | if (part == 0) | |
1224 | part = &dummy; | |
5500c422 | 1225 | |
67492200 | 1226 | window = Qnil; |
9173a8fb | 1227 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1228 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1229 | |
67492200 GM |
1230 | /* If not found above, see if it's in the tool bar window, if a tool |
1231 | bar exists. */ | |
1232 | if (NILP (window) | |
1233 | && tool_bar_p | |
1234 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1235 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
9173a8fb | 1236 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
7442878f | 1237 | != ON_NOTHING)) |
5500c422 | 1238 | { |
341f3858 | 1239 | *part = ON_TEXT; |
67492200 | 1240 | window = f->tool_bar_window; |
5500c422 | 1241 | } |
37962e60 | 1242 | |
67492200 | 1243 | return window; |
7ab12479 JB |
1244 | } |
1245 | ||
ab17c3f2 | 1246 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1247 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1248 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1249 | The top left corner of the frame is considered to be row 0, |
1250 | column 0. */) | |
5842a27b | 1251 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1252 | { |
5500c422 | 1253 | struct frame *f; |
7ab12479 | 1254 | |
44fa5b1e | 1255 | if (NILP (frame)) |
1ae1a37d | 1256 | frame = selected_frame; |
b7826503 | 1257 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1258 | f = XFRAME (frame); |
7ab12479 | 1259 | |
5500c422 | 1260 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1261 | CHECK_NUMBER_OR_FLOAT (x); |
1262 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1263 | |
177c0ea7 | 1264 | return window_from_coordinates (f, |
2c77cf3b RS |
1265 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1266 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1267 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1268 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1269 | 0, 0); |
7ab12479 JB |
1270 | } |
1271 | ||
1272 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1273 | doc: /* Return current value of point in WINDOW. |
496e208e | 1274 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1275 | |
fdb82f93 PJ |
1276 | For a nonselected window, this is the value point would have |
1277 | if that window were selected. | |
1278 | ||
1279 | Note that, when WINDOW is the selected window and its buffer | |
1280 | is also currently selected, the value returned is the same as (point). | |
1281 | It would be more strictly correct to return the `top-level' value | |
1282 | of point, outside of any save-excursion forms. | |
1283 | But that is hard to define. */) | |
5842a27b | 1284 | (Lisp_Object window) |
7ab12479 JB |
1285 | { |
1286 | register struct window *w = decode_window (window); | |
1287 | ||
1288 | if (w == XWINDOW (selected_window) | |
1289 | && current_buffer == XBUFFER (w->buffer)) | |
1290 | return Fpoint (); | |
1291 | return Fmarker_position (w->pointm); | |
1292 | } | |
1293 | ||
1294 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1295 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1296 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1297 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1298 | (Lisp_Object window) |
7ab12479 JB |
1299 | { |
1300 | return Fmarker_position (decode_window (window)->start); | |
1301 | } | |
1302 | ||
8646118f RS |
1303 | /* This is text temporarily removed from the doc string below. |
1304 | ||
fdb82f93 PJ |
1305 | This function returns nil if the position is not currently known. |
1306 | That happens when redisplay is preempted and doesn't finish. | |
1307 | If in that case you want to compute where the end of the window would | |
1308 | have been if redisplay had finished, do this: | |
1309 | (save-excursion | |
1310 | (goto-char (window-start window)) | |
1311 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1312 | (point))") */ |
1313 | ||
478292ed | 1314 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1315 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1316 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1317 | This is updated by redisplay, when it runs to completion. |
1318 | Simply changing the buffer text or setting `window-start' | |
1319 | does not update this value. | |
a0a37a6f LT |
1320 | Return nil if there is no recorded value. \(This can happen if the |
1321 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1322 | If UPDATE is non-nil, compute the up-to-date position |
1323 | if it isn't already recorded. */) | |
5842a27b | 1324 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1325 | { |
1326 | Lisp_Object value; | |
1327 | struct window *w = decode_window (window); | |
5a41ab94 | 1328 | Lisp_Object buf; |
31790df3 | 1329 | struct buffer *b; |
5a41ab94 RS |
1330 | |
1331 | buf = w->buffer; | |
b7826503 | 1332 | CHECK_BUFFER (buf); |
b3a10345 | 1333 | b = XBUFFER (buf); |
5a41ab94 | 1334 | |
8646118f | 1335 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1336 | /* If we don't know the end position, return nil. |
1337 | The user can compute it with vertical-motion if he wants to. | |
1338 | It would be nicer to do it automatically, | |
1339 | but that's so slow that it would probably bother people. */ | |
1340 | if (NILP (w->window_end_valid)) | |
1341 | return Qnil; | |
8646118f | 1342 | #endif |
7250968e | 1343 | |
478292ed RS |
1344 | if (! NILP (update) |
1345 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1346 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1347 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1348 | && !noninteractive) |
478292ed | 1349 | { |
cbc099e5 GM |
1350 | struct text_pos startp; |
1351 | struct it it; | |
b3a10345 KS |
1352 | struct buffer *old_buffer = NULL; |
1353 | ||
1354 | /* Cannot use Fvertical_motion because that function doesn't | |
1355 | cope with variable-height lines. */ | |
1356 | if (b != current_buffer) | |
1357 | { | |
1358 | old_buffer = current_buffer; | |
1359 | set_buffer_internal (b); | |
1360 | } | |
2d6d9df0 GM |
1361 | |
1362 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1363 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1364 | `-l' containing a call to `rmail' with subsequent other |
1365 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1366 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1367 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1368 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1369 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1370 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1371 | else |
cbc099e5 GM |
1372 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1373 | ||
cbc099e5 GM |
1374 | start_display (&it, w, startp); |
1375 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1376 | if (it.current_y < it.last_visible_y) |
1377 | move_it_past_eol (&it); | |
cbc099e5 | 1378 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1379 | |
99593a9d GM |
1380 | if (old_buffer) |
1381 | set_buffer_internal (old_buffer); | |
478292ed RS |
1382 | } |
1383 | else | |
b3a10345 | 1384 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1385 | |
1386 | return value; | |
1387 | } | |
1388 | ||
a7ca3326 | 1389 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f LT |
1390 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1391 | Return POS. */) | |
5842a27b | 1392 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1393 | { |
1394 | register struct window *w = decode_window (window); | |
1395 | ||
b7826503 | 1396 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1397 | if (w == XWINDOW (selected_window) |
1398 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1399 | Fgoto_char (pos); |
1400 | else | |
1401 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1402 | |
0685cb3c GM |
1403 | /* We have to make sure that redisplay updates the window to show |
1404 | the new value of point. */ | |
1405 | if (!EQ (window, selected_window)) | |
799417bd | 1406 | ++windows_or_buffers_changed; |
177c0ea7 | 1407 | |
7ab12479 JB |
1408 | return pos; |
1409 | } | |
1410 | ||
1411 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1412 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1413 | WINDOW defaults to the selected window. Return POS. |
1414 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1415 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1416 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1417 | { |
1418 | register struct window *w = decode_window (window); | |
1419 | ||
b7826503 | 1420 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1421 | set_marker_restricted (w->start, pos, w->buffer); |
1422 | /* this is not right, but much easier than doing what is right. */ | |
1423 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1424 | if (NILP (noforce)) |
7ab12479 JB |
1425 | w->force_start = Qt; |
1426 | w->update_mode_line = Qt; | |
d834a2e9 | 1427 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1428 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1429 | if (!EQ (window, selected_window)) |
1430 | windows_or_buffers_changed++; | |
ce7fae7d | 1431 | |
7ab12479 JB |
1432 | return pos; |
1433 | } | |
1434 | ||
496e208e MR |
1435 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1436 | Spos_visible_in_window_p, 0, 3, 0, | |
1437 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
1438 | Return nil if that position is scrolled vertically out of view. | |
1439 | If a character is only partially visible, nil is returned, unless the | |
1440 | optional argument PARTIALLY is non-nil. | |
1441 | If POS is only out of view because of horizontal scrolling, return non-nil. | |
1442 | If POS is t, it specifies the position of the last visible glyph in WINDOW. | |
1443 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. | |
1444 | ||
1445 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1446 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1447 | where X and Y are the pixel coordinates relative to the top left corner | |
1448 | of the window. The remaining elements are omitted if the character after | |
1449 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1450 | off-window at the top and bottom of the row, ROWH is the height of the | |
1451 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1452 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1453 | { | |
1454 | register struct window *w; | |
1455 | register EMACS_INT posint; | |
1456 | register struct buffer *buf; | |
1457 | struct text_pos top; | |
1458 | Lisp_Object in_window = Qnil; | |
1459 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1460 | int x, y; | |
1461 | ||
1462 | w = decode_window (window); | |
1463 | buf = XBUFFER (w->buffer); | |
1464 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
1465 | ||
1466 | if (EQ (pos, Qt)) | |
1467 | posint = -1; | |
1468 | else if (!NILP (pos)) | |
1469 | { | |
1470 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1471 | posint = XINT (pos); | |
1472 | } | |
1473 | else if (w == XWINDOW (selected_window)) | |
1474 | posint = PT; | |
1475 | else | |
1476 | posint = XMARKER (w->pointm)->charpos; | |
1477 | ||
1478 | /* If position is above window start or outside buffer boundaries, | |
1479 | or if window start is out of range, position is not visible. */ | |
1480 | if ((EQ (pos, Qt) | |
1481 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1482 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1483 | && CHARPOS (top) <= BUF_ZV (buf) | |
1484 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1485 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1486 | in_window = Qt; | |
1487 | ||
1488 | if (!NILP (in_window) && !NILP (partially)) | |
1489 | { | |
1490 | Lisp_Object part = Qnil; | |
1491 | if (!fully_p) | |
1492 | part = list4 (make_number (rtop), make_number (rbot), | |
1493 | make_number (rowh), make_number (vpos)); | |
1494 | in_window = Fcons (make_number (x), | |
1495 | Fcons (make_number (y), part)); | |
1496 | } | |
1497 | ||
1498 | return in_window; | |
1499 | } | |
1500 | ||
1501 | DEFUN ("window-line-height", Fwindow_line_height, | |
1502 | Swindow_line_height, 0, 2, 0, | |
1503 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
1504 | WINDOW defaults to the selected window. | |
1505 | ||
1506 | Return height of current line if LINE is omitted or nil. Return height of | |
1507 | header or mode line if LINE is `header-line' or `mode-line'. | |
1508 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1509 | counts from the end of the window. | |
1510 | ||
1511 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1512 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1513 | vertical position in lines and pixels of the line, relative to the top | |
1514 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1515 | the bottom of the text line. If there are off-window pixels at the top | |
1516 | of the (first) text line, YPOS is negative. | |
1517 | ||
1518 | Return nil if window display is not up-to-date. In that case, use | |
1519 | `pos-visible-in-window-p' to obtain the information. */) | |
1520 | (Lisp_Object line, Lisp_Object window) | |
1521 | { | |
1522 | register struct window *w; | |
1523 | register struct buffer *b; | |
1524 | struct glyph_row *row, *end_row; | |
1525 | int max_y, crop, i, n; | |
1526 | ||
1527 | w = decode_window (window); | |
1528 | ||
1529 | if (noninteractive || w->pseudo_window_p) | |
1530 | return Qnil; | |
1531 | ||
1532 | CHECK_BUFFER (w->buffer); | |
1533 | b = XBUFFER (w->buffer); | |
1534 | ||
1535 | /* Fail if current matrix is not up-to-date. */ | |
1536 | if (NILP (w->window_end_valid) | |
1537 | || current_buffer->clip_changed | |
1538 | || current_buffer->prevent_redisplay_optimizations_p | |
1539 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
1540 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
1541 | return Qnil; | |
1542 | ||
1543 | if (NILP (line)) | |
1544 | { | |
1545 | i = w->cursor.vpos; | |
1546 | if (i < 0 || i >= w->current_matrix->nrows | |
1547 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1548 | return Qnil; | |
1549 | max_y = window_text_bottom_y (w); | |
1550 | goto found_row; | |
1551 | } | |
1552 | ||
1553 | if (EQ (line, Qheader_line)) | |
1554 | { | |
1555 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1556 | return Qnil; | |
1557 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1558 | if (!row->enabled_p) | |
1559 | return Qnil; | |
1560 | return list4 (make_number (row->height), | |
1561 | make_number (0), make_number (0), | |
1562 | make_number (0)); | |
1563 | } | |
1564 | ||
1565 | if (EQ (line, Qmode_line)) | |
1566 | { | |
1567 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1568 | if (!row->enabled_p) | |
1569 | return Qnil; | |
1570 | return list4 (make_number (row->height), | |
1571 | make_number (0), /* not accurate */ | |
1572 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
1573 | + window_text_bottom_y (w)), | |
1574 | make_number (0)); | |
1575 | } | |
1576 | ||
1577 | CHECK_NUMBER (line); | |
1578 | n = XINT (line); | |
1579 | ||
1580 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1581 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1582 | max_y = window_text_bottom_y (w); | |
1583 | i = 0; | |
1584 | ||
1585 | while ((n < 0 || i < n) | |
1586 | && row <= end_row && row->enabled_p | |
1587 | && row->y + row->height < max_y) | |
1588 | row++, i++; | |
1589 | ||
1590 | if (row > end_row || !row->enabled_p) | |
1591 | return Qnil; | |
1592 | ||
1593 | if (++n < 0) | |
1594 | { | |
1595 | if (-n > i) | |
1596 | return Qnil; | |
1597 | row += n; | |
1598 | i += n; | |
1599 | } | |
1600 | ||
1601 | found_row: | |
1602 | crop = max (0, (row->y + row->height) - max_y); | |
1603 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
1604 | make_number (i), | |
1605 | make_number (row->y), | |
1606 | make_number (crop)); | |
1607 | } | |
d653c8cc | 1608 | |
a7ca3326 | 1609 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1610 | 0, 1, 0, |
1611 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1612 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1613 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1614 | never called with WINDOW as its argument, or the value set by that | |
1615 | function was internally reset since its last call. WINDOW defaults to | |
1616 | the selected window. | |
1617 | ||
1618 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1619 | from displaying another buffer in it. `get-lru-window' and | |
1620 | `get-largest-window' treat dedicated windows specially. | |
1621 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1622 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1623 | ||
1624 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1625 | window, unless that window is "strongly" dedicated to its buffer, that | |
1626 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1627 | (Lisp_Object window) |
7ab12479 JB |
1628 | { |
1629 | return decode_window (window)->dedicated; | |
1630 | } | |
1631 | ||
d207b766 RS |
1632 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1633 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1634 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1635 | WINDOW must be a live window and defaults to the selected one. FLAG |
1636 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1637 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1638 | |
7bfac547 MR |
1639 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1640 | from displaying another buffer in it. `get-lru-window' and | |
1641 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1642 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1643 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1644 | and the containing frame. | |
7bfac547 MR |
1645 | |
1646 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1647 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1648 | displayed by a window, unless that window is strongly dedicated to its | |
1649 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1650 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1651 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1652 | { |
1653 | register struct window *w = decode_window (window); | |
1654 | ||
d653c8cc | 1655 | w->dedicated = flag; |
7ab12479 JB |
1656 | return w->dedicated; |
1657 | } | |
1658 | ||
496e208e MR |
1659 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1660 | 0, 1, 0, | |
1661 | doc: /* Return buffers previously shown in WINDOW. | |
1662 | WINDOW must be a live window and defaults to the selected one. | |
1663 | ||
1664 | The return value is either nil or a list of <buffer, window-start, | |
1665 | window-point> triples where buffer was previously shown in WINDOW. */) | |
1666 | (Lisp_Object window) | |
1667 | { | |
1668 | return decode_window (window)->prev_buffers; | |
1669 | } | |
1670 | ||
1671 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1672 | Sset_window_prev_buffers, 2, 2, 0, | |
1673 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
1674 | WINDOW must be a live window and defaults to the selected one. Return | |
1675 | PREV-BUFFERS. | |
1676 | ||
1677 | PREV-BUFFERS should be either nil or a list of <buffer, window-start, | |
1678 | window-point> triples where buffer was previously shown in WINDOW. */) | |
1679 | (Lisp_Object window, Lisp_Object prev_buffers) | |
1680 | { | |
1681 | return decode_any_window (window)->prev_buffers = prev_buffers; | |
1682 | } | |
1683 | ||
1684 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1685 | 0, 1, 0, | |
1686 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1687 | WINDOW must be a live window and defaults to the selected one. */) | |
1688 | (Lisp_Object window) | |
1689 | { | |
1690 | return decode_window (window)->next_buffers; | |
1691 | } | |
1692 | ||
1693 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1694 | Sset_window_next_buffers, 2, 2, 0, | |
1695 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
1696 | WINDOW must be a live window and defaults to the selected one. Return | |
1697 | NEXT-BUFFERS. | |
1698 | ||
1699 | NEXT-BUFFERS should be either nil or a list of buffers that have been | |
1700 | recently re-shown in WINDOW. */) | |
1701 | (Lisp_Object window, Lisp_Object next_buffers) | |
1702 | { | |
1703 | return decode_any_window (window)->next_buffers = next_buffers; | |
1704 | } | |
d653c8cc | 1705 | |
cfbb2395 JB |
1706 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1707 | 0, 1, 0, | |
d653c8cc MR |
1708 | doc: /* Return the parameters of WINDOW and their values. |
1709 | WINDOW defaults to the selected window. The return value is a list of | |
1710 | elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1711 | (Lisp_Object window) |
cfbb2395 | 1712 | { |
496e208e | 1713 | return Fcopy_alist (decode_any_window (window)->window_parameters); |
cfbb2395 JB |
1714 | } |
1715 | ||
1716 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1717 | 2, 2, 0, | |
d653c8cc MR |
1718 | doc: /* Return WINDOW's value for PARAMETER. |
1719 | WINDOW defaults to the selected window. */) | |
5842a27b | 1720 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1721 | { |
927abf37 JB |
1722 | Lisp_Object result; |
1723 | ||
496e208e | 1724 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1725 | return CDR_SAFE (result); |
cfbb2395 JB |
1726 | } |
1727 | ||
cfbb2395 JB |
1728 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1729 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1730 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1731 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1732 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1733 | { |
496e208e | 1734 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1735 | Lisp_Object old_alist_elt; |
1736 | ||
1737 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1738 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1739 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1740 | else | |
1741 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1742 | return value; |
cfbb2395 JB |
1743 | } |
1744 | ||
7ab12479 JB |
1745 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1746 | 0, 1, 0, | |
c85322d0 EZ |
1747 | doc: /* Return the display-table that WINDOW is using. |
1748 | WINDOW defaults to the selected window. */) | |
5842a27b | 1749 | (Lisp_Object window) |
7ab12479 JB |
1750 | { |
1751 | return decode_window (window)->display_table; | |
1752 | } | |
1753 | ||
5500c422 GM |
1754 | /* Get the display table for use on window W. This is either W's |
1755 | display table or W's buffer's display table. Ignore the specified | |
1756 | tables if they are not valid; if no valid table is specified, | |
1757 | return 0. */ | |
7ab12479 | 1758 | |
319315f1 | 1759 | struct Lisp_Char_Table * |
971de7fb | 1760 | window_display_table (struct window *w) |
7ab12479 | 1761 | { |
c756cdbe GM |
1762 | struct Lisp_Char_Table *dp = NULL; |
1763 | ||
1764 | if (DISP_TABLE_P (w->display_table)) | |
1765 | dp = XCHAR_TABLE (w->display_table); | |
1766 | else if (BUFFERP (w->buffer)) | |
1767 | { | |
1768 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1769 | |
4b4deea2 TT |
1770 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1771 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1772 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1773 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1774 | } | |
171d003c | 1775 | |
c756cdbe | 1776 | return dp; |
7ab12479 JB |
1777 | } |
1778 | ||
3a2712f9 | 1779 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1780 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1781 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1782 | { |
1783 | register struct window *w; | |
7ab12479 JB |
1784 | |
1785 | w = decode_window (window); | |
1786 | w->display_table = table; | |
1787 | return table; | |
1788 | } | |
1789 | \f | |
562dd5e9 | 1790 | /* Record info on buffer window W is displaying |
7ab12479 | 1791 | when it is about to cease to display that buffer. */ |
dfcf069d | 1792 | static void |
971de7fb | 1793 | unshow_buffer (register struct window *w) |
7ab12479 | 1794 | { |
12cae7c0 | 1795 | Lisp_Object buf; |
b73ea88e | 1796 | struct buffer *b; |
7ab12479 | 1797 | |
12cae7c0 | 1798 | buf = w->buffer; |
b73ea88e RS |
1799 | b = XBUFFER (buf); |
1800 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1801 | abort (); |
1802 | ||
573f41ab | 1803 | #if 0 |
7ab12479 JB |
1804 | if (w == XWINDOW (selected_window) |
1805 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1806 | /* Do this except when the selected window's buffer | |
1807 | is being removed from some other window. */ | |
573f41ab RS |
1808 | #endif |
1809 | /* last_window_start records the start position that this buffer | |
1810 | had in the last window to be disconnected from it. | |
1811 | Now that this statement is unconditional, | |
1812 | it is possible for the buffer to be displayed in the | |
1813 | selected window, while last_window_start reflects another | |
1814 | window which was recently showing the same buffer. | |
1815 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1816 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1817 | |
1818 | /* Point in the selected window's buffer | |
1819 | is actually stored in that buffer, and the window's pointm isn't used. | |
1820 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1821 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1822 | /* This line helps to fix Horsley's testbug.el bug. */ | |
4b4deea2 TT |
1823 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1824 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
1825 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) | |
b73ea88e RS |
1826 | temp_set_point_both (b, |
1827 | clip_to_bounds (BUF_BEGV (b), | |
1828 | XMARKER (w->pointm)->charpos, | |
1829 | BUF_ZV (b)), | |
1830 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1831 | marker_byte_position (w->pointm), | |
1832 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1833 | |
4b4deea2 TT |
1834 | if (WINDOWP (BVAR (b, last_selected_window)) |
1835 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
1836 | BVAR (b, last_selected_window) = Qnil; | |
7ab12479 JB |
1837 | } |
1838 | ||
1a13852e MR |
1839 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1840 | means change window structure only. Otherwise store geometry and | |
1841 | other settings as well. */ | |
dfcf069d | 1842 | static void |
1a13852e | 1843 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1844 | { |
1845 | register Lisp_Object tem; | |
1a13852e | 1846 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1847 | |
1a13852e MR |
1848 | /* If OLD is its frame's root window, then NEW is the new |
1849 | root window for that frame. */ | |
7f4161e0 | 1850 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
1a13852e MR |
1851 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = new; |
1852 | ||
1853 | if (setflag) | |
1854 | { | |
1855 | n->left_col = o->left_col; | |
1856 | n->top_line = o->top_line; | |
1857 | n->total_cols = o->total_cols; | |
1858 | n->total_lines = o->total_lines; | |
1859 | n->normal_cols = o->normal_cols; | |
1860 | o->normal_cols = make_float (1.0); | |
1861 | n->normal_lines = o->normal_lines; | |
1862 | o->normal_lines = make_float (1.0); | |
1863 | n->desired_matrix = n->current_matrix = 0; | |
1864 | n->vscroll = 0; | |
1865 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1866 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
1867 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
1868 | n->phys_cursor_type = -1; | |
1869 | n->phys_cursor_width = -1; | |
1870 | n->must_be_updated_p = 0; | |
1871 | n->pseudo_window_p = 0; | |
1872 | XSETFASTINT (n->window_end_vpos, 0); | |
1873 | XSETFASTINT (n->window_end_pos, 0); | |
1874 | n->window_end_valid = Qnil; | |
1875 | n->frozen_window_start_p = 0; | |
1a13852e MR |
1876 | } |
1877 | ||
1878 | n->next = tem = o->next; | |
265a9e55 | 1879 | if (!NILP (tem)) |
1a13852e | 1880 | XWINDOW (tem)->prev = new; |
7ab12479 | 1881 | |
1a13852e | 1882 | n->prev = tem = o->prev; |
265a9e55 | 1883 | if (!NILP (tem)) |
1a13852e | 1884 | XWINDOW (tem)->next = new; |
7ab12479 | 1885 | |
1a13852e | 1886 | n->parent = tem = o->parent; |
265a9e55 | 1887 | if (!NILP (tem)) |
7ab12479 JB |
1888 | { |
1889 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1a13852e | 1890 | XWINDOW (tem)->vchild = new; |
7ab12479 | 1891 | if (EQ (XWINDOW (tem)->hchild, old)) |
1a13852e | 1892 | XWINDOW (tem)->hchild = new; |
7ab12479 | 1893 | } |
1a13852e MR |
1894 | } |
1895 | ||
1896 | /* If window WINDOW and its parent window are iso-combined, merge | |
1897 | WINDOW's children into those of its parent window and mark WINDOW as | |
1898 | deleted. */ | |
1899 | ||
1900 | static void | |
1901 | recombine_windows (Lisp_Object window) | |
1902 | { | |
1903 | struct window *w, *p, *c; | |
1904 | Lisp_Object parent, child; | |
1905 | int horflag; | |
1906 | ||
1907 | w = XWINDOW (window); | |
1908 | parent = w->parent; | |
1909 | if (!NILP (parent) && NILP (w->nest)) | |
1910 | { | |
1911 | p = XWINDOW (parent); | |
1912 | if (((!NILP (p->vchild) && !NILP (w->vchild)) | |
1913 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1914 | /* WINDOW and PARENT are both either a vertical or a horizontal | |
1915 | combination. */ | |
1916 | { | |
1917 | horflag = NILP (w->vchild); | |
1918 | child = horflag ? w->hchild : w->vchild; | |
1919 | c = XWINDOW (child); | |
1920 | ||
1921 | /* Splice WINDOW's children into its parent's children and | |
1922 | assign new normal sizes. */ | |
1923 | if (NILP (w->prev)) | |
1924 | if (horflag) | |
1925 | p->hchild = child; | |
1926 | else | |
1927 | p->vchild = child; | |
1928 | else | |
1929 | { | |
1930 | c->prev = w->prev; | |
1931 | XWINDOW (w->prev)->next = child; | |
1932 | } | |
1933 | ||
1934 | while (c) | |
1935 | { | |
1936 | c->parent = parent; | |
1937 | ||
1938 | if (horflag) | |
1939 | c->normal_cols | |
1940 | = make_float (XFLOATINT (c->total_cols) | |
1941 | / XFLOATINT (p->total_cols)); | |
1942 | else | |
1943 | c->normal_lines | |
1944 | = make_float (XFLOATINT (c->total_lines) | |
1945 | / XFLOATINT (p->total_lines)); | |
1946 | ||
1947 | if (NILP (c->next)) | |
1948 | { | |
1949 | if (!NILP (w->next)) | |
1950 | { | |
1951 | c->next = w->next; | |
1952 | XWINDOW (c->next)->prev = child; | |
1953 | } | |
1954 | ||
1955 | c = 0; | |
1956 | } | |
1957 | else | |
1958 | { | |
1959 | child = c->next; | |
1960 | c = XWINDOW (child); | |
1961 | } | |
1962 | } | |
7ab12479 | 1963 | |
1a13852e MR |
1964 | /* WINDOW can be deleted now. */ |
1965 | w->vchild = w->hchild = Qnil; | |
1966 | } | |
1967 | } | |
7ab12479 | 1968 | } |
6198ccd0 MR |
1969 | |
1970 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 1971 | static void |
6198ccd0 MR |
1972 | delete_deletable_window (Lisp_Object window) |
1973 | { | |
1974 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
1975 | call1 (Qdelete_window, window); | |
1976 | } | |
1a13852e | 1977 | \f |
67492200 GM |
1978 | /*********************************************************************** |
1979 | Window List | |
1980 | ***********************************************************************/ | |
1981 | ||
f95464e4 GM |
1982 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1983 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 1984 | the window_list function. */ |
67492200 GM |
1985 | |
1986 | static int | |
971de7fb | 1987 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 1988 | { |
f95464e4 | 1989 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1990 | Lisp_Object window; |
1991 | XSETWINDOW (window, w); | |
212116d6 | 1992 | *list = Fcons (window, *list); |
67492200 GM |
1993 | return 1; |
1994 | } | |
1995 | ||
1996 | ||
1997 | /* Return a list of all windows, for use by next_window. If | |
1998 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1999 | list, cache it in Vwindow_list, and return that. */ | |
2000 | ||
2001 | static Lisp_Object | |
971de7fb | 2002 | window_list (void) |
67492200 GM |
2003 | { |
2004 | if (!CONSP (Vwindow_list)) | |
2005 | { | |
2006 | Lisp_Object tail; | |
212116d6 | 2007 | |
67492200 GM |
2008 | Vwindow_list = Qnil; |
2009 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
2010 | { |
2011 | Lisp_Object args[2]; | |
2012 | ||
2013 | /* We are visiting windows in canonical order, and add | |
2014 | new windows at the front of args[1], which means we | |
2015 | have to reverse this list at the end. */ | |
2016 | args[1] = Qnil; | |
2017 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
2018 | args[0] = Vwindow_list; | |
2019 | args[1] = Fnreverse (args[1]); | |
2020 | Vwindow_list = Fnconc (2, args); | |
2021 | } | |
67492200 | 2022 | } |
177c0ea7 | 2023 | |
67492200 GM |
2024 | return Vwindow_list; |
2025 | } | |
2026 | ||
2027 | ||
118ea242 GM |
2028 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2029 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2030 | |
118ea242 GM |
2031 | MINIBUF t means WINDOW may be minibuffer windows. |
2032 | `lambda' means WINDOW may not be a minibuffer window. | |
2033 | a window means a specific minibuffer window | |
67492200 | 2034 | |
118ea242 GM |
2035 | ALL_FRAMES t means search all frames, |
2036 | nil means search just current frame, | |
aa248733 MS |
2037 | `visible' means search just visible frames on the |
2038 | current terminal, | |
2039 | 0 means search visible and iconified frames on the | |
2040 | current terminal, | |
118ea242 GM |
2041 | a window means search the frame that window belongs to, |
2042 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2043 | |
2044 | static int | |
971de7fb | 2045 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2046 | { |
2047 | struct window *w = XWINDOW (window); | |
2048 | struct frame *f = XFRAME (w->frame); | |
2049 | int candidate_p = 1; | |
2050 | ||
2051 | if (!BUFFERP (w->buffer)) | |
2052 | candidate_p = 0; | |
2053 | else if (MINI_WINDOW_P (w) | |
2054 | && (EQ (minibuf, Qlambda) | |
2055 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2056 | { | |
2057 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2058 | If it is a window, consider only that one. */ | |
2059 | candidate_p = 0; | |
2060 | } | |
118ea242 GM |
2061 | else if (EQ (all_frames, Qt)) |
2062 | candidate_p = 1; | |
67492200 | 2063 | else if (NILP (all_frames)) |
118ea242 GM |
2064 | { |
2065 | xassert (WINDOWP (owindow)); | |
2066 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
2067 | } | |
67492200 GM |
2068 | else if (EQ (all_frames, Qvisible)) |
2069 | { | |
2070 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
2071 | candidate_p = FRAME_VISIBLE_P (f) |
2072 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2073 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
2074 | ||
67492200 GM |
2075 | } |
2076 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2077 | { | |
2078 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2079 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2080 | #ifdef HAVE_X_WINDOWS | |
2081 | /* Yuck!! If we've just created the frame and the | |
2082 | window-manager requested the user to place it | |
2083 | manually, the window may still not be considered | |
2084 | `visible'. I'd argue it should be at least | |
2085 | something like `iconified', but don't know how to do | |
2086 | that yet. --Stef */ | |
2087 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2088 | && !f->output_data.x->has_been_visible) | |
2089 | #endif | |
de509a60 SM |
2090 | ) |
2091 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2092 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 2093 | } |
67492200 GM |
2094 | else if (WINDOWP (all_frames)) |
2095 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
2096 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
2097 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
2098 | else if (FRAMEP (all_frames)) |
2099 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
2100 | |
2101 | return candidate_p; | |
2102 | } | |
2103 | ||
2104 | ||
2105 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2106 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2107 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2108 | |
2109 | static void | |
971de7fb | 2110 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
2111 | { |
2112 | if (NILP (*window)) | |
2113 | *window = selected_window; | |
2114 | else | |
b7826503 | 2115 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 2116 | |
67492200 GM |
2117 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2118 | does. */ | |
2119 | if (NILP (*minibuf)) | |
2120 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2121 | else if (!EQ (*minibuf, Qt)) | |
2122 | *minibuf = Qlambda; | |
177c0ea7 | 2123 | |
67492200 GM |
2124 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2125 | => count none of them, or a specific minibuffer window (the | |
2126 | active one) to count. */ | |
2127 | ||
2128 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2129 | if (NILP (*all_frames)) | |
2130 | *all_frames = (!EQ (*minibuf, Qlambda) | |
2131 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
2132 | : Qnil); | |
2133 | else if (EQ (*all_frames, Qvisible)) | |
2134 | ; | |
0f8fe9a2 | 2135 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2136 | ; |
2137 | else if (FRAMEP (*all_frames)) | |
2138 | ; | |
2139 | else if (!EQ (*all_frames, Qt)) | |
2140 | *all_frames = Qnil; | |
67492200 GM |
2141 | } |
2142 | ||
2143 | ||
ab6d1131 | 2144 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2145 | of windows. NEXT_P non-zero means return the next window. See the |
2146 | documentation string of next-window for the meaning of MINIBUF and | |
2147 | ALL_FRAMES. */ | |
2148 | ||
2149 | static Lisp_Object | |
971de7fb | 2150 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2151 | { |
2152 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2153 | |
67492200 GM |
2154 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2155 | return the first window on the frame. */ | |
2156 | if (FRAMEP (all_frames) | |
2157 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
2158 | return Fframe_first_window (all_frames); | |
177c0ea7 | 2159 | |
212116d6 | 2160 | if (next_p) |
67492200 GM |
2161 | { |
2162 | Lisp_Object list; | |
177c0ea7 | 2163 | |
67492200 GM |
2164 | /* Find WINDOW in the list of all windows. */ |
2165 | list = Fmemq (window, window_list ()); | |
2166 | ||
2167 | /* Scan forward from WINDOW to the end of the window list. */ | |
2168 | if (CONSP (list)) | |
2169 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2170 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2171 | break; |
2172 | ||
2173 | /* Scan from the start of the window list up to WINDOW. */ | |
2174 | if (!CONSP (list)) | |
2175 | for (list = Vwindow_list; | |
2176 | CONSP (list) && !EQ (XCAR (list), window); | |
2177 | list = XCDR (list)) | |
118ea242 | 2178 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2179 | break; |
2180 | ||
2181 | if (CONSP (list)) | |
2182 | window = XCAR (list); | |
2183 | } | |
2184 | else | |
2185 | { | |
2186 | Lisp_Object candidate, list; | |
177c0ea7 | 2187 | |
67492200 GM |
2188 | /* Scan through the list of windows for candidates. If there are |
2189 | candidate windows in front of WINDOW, the last one of these | |
2190 | is the one we want. If there are candidates following WINDOW | |
2191 | in the list, again the last one of these is the one we want. */ | |
2192 | candidate = Qnil; | |
2193 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2194 | { | |
2195 | if (EQ (XCAR (list), window)) | |
2196 | { | |
2197 | if (WINDOWP (candidate)) | |
2198 | break; | |
2199 | } | |
118ea242 GM |
2200 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2201 | all_frames)) | |
67492200 GM |
2202 | candidate = XCAR (list); |
2203 | } | |
2204 | ||
2205 | if (WINDOWP (candidate)) | |
2206 | window = candidate; | |
2207 | } | |
2208 | ||
2209 | return window; | |
2210 | } | |
7ab12479 | 2211 | |
7ab12479 | 2212 | |
a7ca3326 | 2213 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 | 2214 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
9397e56f MR |
2215 | WINDOW must be a live window and defaults to the selected one. The |
2216 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2217 | consider. | |
2218 | ||
2219 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2220 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2221 | even if the minibuffer is not active. Any other value means do not | |
2222 | consider the minibuffer window even if the minibuffer is active. | |
2223 | ||
2224 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2225 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2226 | minibuffer counts, consider all windows on all frames that share that | |
2227 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2228 | meanings: | |
2229 | ||
2230 | - t means consider all windows on all existing frames. | |
2231 | ||
2232 | - `visible' means consider all windows on all visible frames. | |
2233 | ||
2234 | - 0 (the number zero) means consider all windows on all visible and | |
2235 | iconified frames. | |
2236 | ||
2237 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2238 | |
ab6d1131 | 2239 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2240 | others. |
fdb82f93 PJ |
2241 | |
2242 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2243 | `next-window' to iterate through the entire cycle of acceptable | |
2244 | windows, eventually ending up back at the window you started with. | |
2245 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2246 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2247 | { |
67492200 | 2248 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2249 | } |
2250 | ||
67492200 | 2251 | |
26f6279d | 2252 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 | 2253 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
9397e56f MR |
2254 | WINDOW must be a live window and defaults to the selected one. The |
2255 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2256 | consider. | |
2257 | ||
2258 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2259 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2260 | even if the minibuffer is not active. Any other value means do not | |
2261 | consider the minibuffer window even if the minibuffer is active. | |
2262 | ||
2263 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2264 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2265 | minibuffer counts, consider all windows on all frames that share that | |
2266 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2267 | meanings: | |
2268 | ||
2269 | - t means consider all windows on all existing frames. | |
2270 | ||
2271 | - `visible' means consider all windows on all visible frames. | |
2272 | ||
2273 | - 0 (the number zero) means consider all windows on all visible and | |
2274 | iconified frames. | |
2275 | ||
2276 | - A frame means consider all windows on that frame only. | |
2277 | ||
2278 | Anything else means consider all windows on WINDOW's frame and no | |
2279 | others. | |
ab6d1131 MR |
2280 | |
2281 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2282 | use `previous-window' to iterate through the entire cycle of | |
2283 | acceptable windows, eventually ending up back at the window you | |
2284 | started with. `next-window' traverses the same cycle, in the | |
2285 | reverse order. */) | |
5842a27b | 2286 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2287 | { |
67492200 | 2288 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2289 | } |
2290 | ||
67492200 | 2291 | |
ab6d1131 | 2292 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2293 | for `next-window'. */ |
2294 | ||
2295 | static Lisp_Object | |
971de7fb | 2296 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2297 | { |
403de3b4 | 2298 | Lisp_Object tail, list, rest; |
67492200 GM |
2299 | |
2300 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2301 | list = Qnil; | |
177c0ea7 | 2302 | |
67492200 | 2303 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2304 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2305 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2306 | |
403de3b4 RS |
2307 | /* Rotate the list to start with WINDOW. */ |
2308 | list = Fnreverse (list); | |
2309 | rest = Fmemq (window, list); | |
2310 | if (!NILP (rest) && !EQ (rest, list)) | |
2311 | { | |
1725a7c9 | 2312 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2313 | ; |
2314 | XSETCDR (tail, Qnil); | |
2315 | list = nconc2 (rest, list); | |
2316 | } | |
2317 | return list; | |
67492200 GM |
2318 | } |
2319 | ||
2320 | ||
abde8f8c MR |
2321 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2322 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2323 | FRAME nil or omitted means use the selected frame. | |
2324 | WINDOW nil or omitted means use the selected window. | |
2325 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2326 | MINIBUF nil or omitted means include the minibuffer window only | |
2327 | if it's active. | |
2328 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2329 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2330 | { | |
2331 | if (NILP (window)) | |
2332 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; | |
2333 | CHECK_WINDOW (window); | |
2334 | if (NILP (frame)) | |
2335 | frame = selected_frame; | |
2336 | ||
2337 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2338 | error ("Window is on a different frame"); | |
2339 | ||
2340 | return window_list_1 (window, minibuf, frame); | |
2341 | } | |
2342 | ||
2343 | ||
1a13852e MR |
2344 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2345 | doc: /* Return a list of all live windows. | |
2346 | WINDOW specifies the first window to list and defaults to the selected | |
2347 | window. | |
2348 | ||
2349 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2350 | window only if the minibuffer is active. MINIBUF t means consider the | |
2351 | minibuffer window even if the minibuffer is not active. Any other value | |
2352 | means do not consider the minibuffer window even if the minibuffer is | |
2353 | active. | |
2354 | ||
2355 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2356 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2357 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2358 | frames that share that minibuffer too. The following non-nil values of | |
2359 | ALL-FRAMES have special meanings: | |
2360 | ||
2361 | - t means consider all windows on all existing frames. | |
2362 | ||
2363 | - `visible' means consider all windows on all visible frames. | |
2364 | ||
2365 | - 0 (the number zero) means consider all windows on all visible and | |
2366 | iconified frames. | |
2367 | ||
2368 | - A frame means consider all windows on that frame only. | |
2369 | ||
2370 | Anything else means consider all windows on WINDOW's frame and no | |
2371 | others. | |
2372 | ||
2373 | If WINDOW is not on the list of windows returned, some other window will | |
2374 | be listed first but no error is signalled. */) | |
2375 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) | |
2376 | { | |
2377 | return window_list_1 (window, minibuf, all_frames); | |
2378 | } | |
7ab12479 JB |
2379 | \f |
2380 | /* Look at all windows, performing an operation specified by TYPE | |
2381 | with argument OBJ. | |
75d8f668 | 2382 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2383 | Qnil, look at just the selected frame; |
89bca612 | 2384 | Qvisible, look at visible frames; |
75d8f668 | 2385 | a frame, just look at windows on that frame. |
85fe3b5e | 2386 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2387 | |
2388 | enum window_loop | |
2389 | { | |
2390 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2391 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2392 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2393 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2394 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2395 | }; |
2396 | ||
2397 | static Lisp_Object | |
971de7fb | 2398 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2399 | { |
118ea242 | 2400 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2401 | int frame_best_window_flag = 0; |
118ea242 | 2402 | struct frame *f; |
ffdc852d | 2403 | struct gcpro gcpro1; |
177c0ea7 | 2404 | |
44fa5b1e JB |
2405 | /* If we're only looping through windows on a particular frame, |
2406 | frame points to that frame. If we're looping through windows | |
2407 | on all frames, frame is 0. */ | |
2408 | if (FRAMEP (frames)) | |
118ea242 | 2409 | f = XFRAME (frames); |
44fa5b1e | 2410 | else if (NILP (frames)) |
118ea242 | 2411 | f = SELECTED_FRAME (); |
7ab12479 | 2412 | else |
118ea242 | 2413 | f = NULL; |
177c0ea7 | 2414 | |
118ea242 | 2415 | if (f) |
89bca612 | 2416 | frame_arg = Qlambda; |
0f8fe9a2 | 2417 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2418 | frame_arg = frames; |
89bca612 RS |
2419 | else if (EQ (frames, Qvisible)) |
2420 | frame_arg = frames; | |
118ea242 GM |
2421 | else |
2422 | frame_arg = Qt; | |
7ab12479 | 2423 | |
89bca612 RS |
2424 | /* frame_arg is Qlambda to stick to one frame, |
2425 | Qvisible to consider all visible frames, | |
2426 | or Qt otherwise. */ | |
2427 | ||
7ab12479 | 2428 | /* Pick a window to start with. */ |
017b2bad | 2429 | if (WINDOWP (obj)) |
118ea242 GM |
2430 | window = obj; |
2431 | else if (f) | |
2432 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2433 | else |
118ea242 | 2434 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2435 | |
cd2904bd | 2436 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2437 | GCPRO1 (windows); |
7ab12479 | 2438 | best_window = Qnil; |
118ea242 | 2439 | |
e67a1dea | 2440 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2441 | { |
118ea242 | 2442 | struct window *w; |
177c0ea7 | 2443 | |
118ea242 GM |
2444 | window = XCAR (windows); |
2445 | w = XWINDOW (window); | |
177c0ea7 | 2446 | |
118ea242 GM |
2447 | /* Note that we do not pay attention here to whether the frame |
2448 | is visible, since Fwindow_list skips non-visible frames if | |
2449 | that is desired, under the control of frame_arg. */ | |
2450 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2451 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2452 | consider all windows. */ | |
2453 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2454 | || (mini && minibuf_level > 0)) |
2455 | switch (type) | |
2456 | { | |
2457 | case GET_BUFFER_WINDOW: | |
118ea242 | 2458 | if (EQ (w->buffer, obj) |
9397e56f MR |
2459 | /* Don't find any minibuffer window except the one that |
2460 | is currently in use. */ | |
2461 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2462 | { |
9397e56f MR |
2463 | if (EQ (window, selected_window)) |
2464 | /* Preferably return the selected window. */ | |
ca2d5566 | 2465 | RETURN_UNGCPRO (window); |
9397e56f MR |
2466 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
2467 | && !frame_best_window_flag) | |
2468 | /* Prefer windows on the current frame (but don't | |
2469 | choose another one if we have one already). */ | |
118ea242 | 2470 | { |
9397e56f MR |
2471 | best_window = window; |
2472 | frame_best_window_flag = 1; | |
7ab12479 | 2473 | } |
9397e56f MR |
2474 | else if (NILP (best_window)) |
2475 | best_window = window; | |
7ab12479 JB |
2476 | } |
2477 | break; | |
2478 | ||
9397e56f MR |
2479 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2480 | /* We could simply check whether the buffer shown by window | |
2481 | is live, and show another buffer in case it isn't. */ | |
118ea242 | 2482 | if (EQ (w->buffer, obj)) |
7ab12479 | 2483 | { |
9397e56f MR |
2484 | /* Undedicate WINDOW. */ |
2485 | w->dedicated = Qnil; | |
2486 | /* Make WINDOW show the buffer returned by | |
2487 | other_buffer_safely, don't run any hooks. */ | |
2488 | set_window_buffer | |
2489 | (window, other_buffer_safely (w->buffer), 0, 0); | |
2490 | /* If WINDOW is the selected window, make its buffer | |
2491 | current. But do so only if the window shows the | |
2492 | current buffer (Bug#6454). */ | |
2493 | if (EQ (window, selected_window) | |
2494 | && XBUFFER (w->buffer) == current_buffer) | |
2495 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2496 | } |
2497 | break; | |
3f8ab7bd | 2498 | |
6b61353c KH |
2499 | case REDISPLAY_BUFFER_WINDOWS: |
2500 | if (EQ (w->buffer, obj)) | |
2501 | { | |
2502 | mark_window_display_accurate (window, 0); | |
2503 | w->update_mode_line = Qt; | |
2504 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2505 | ++update_mode_lines; | |
2506 | best_window = window; | |
2507 | } | |
2508 | break; | |
2509 | ||
3f8ab7bd RS |
2510 | /* Check for a window that has a killed buffer. */ |
2511 | case CHECK_ALL_WINDOWS: | |
118ea242 | 2512 | if (! NILP (w->buffer) |
4b4deea2 | 2513 | && NILP (BVAR (XBUFFER (w->buffer), name))) |
3f8ab7bd | 2514 | abort (); |
118ea242 | 2515 | break; |
6bbd7a29 GM |
2516 | |
2517 | case WINDOW_LOOP_UNUSED: | |
2518 | break; | |
7ab12479 | 2519 | } |
7ab12479 | 2520 | } |
7ab12479 | 2521 | |
118ea242 | 2522 | UNGCPRO; |
7ab12479 | 2523 | return best_window; |
37962e60 | 2524 | } |
605be8af | 2525 | |
3f8ab7bd RS |
2526 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2527 | ||
e3b27b31 | 2528 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2529 | void |
971de7fb | 2530 | check_all_windows (void) |
3f8ab7bd RS |
2531 | { |
2532 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2533 | } | |
2534 | ||
a7ca3326 | 2535 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2536 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2537 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2538 | the current buffer. | |
2539 | ||
2540 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2541 | ||
2542 | - t means consider all windows on all existing frames. | |
2543 | ||
2544 | - `visible' means consider all windows on all visible frames. | |
2545 | ||
2546 | - 0 (the number zero) means consider all windows on all visible | |
2547 | and iconified frames. | |
2548 | ||
2549 | - A frame means consider all windows on that frame only. | |
2550 | ||
2551 | Any other value of ALL-FRAMES means consider all windows on the | |
2552 | selected frame and no others. */) | |
2553 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2554 | { |
fec89261 MR |
2555 | Lisp_Object buffer; |
2556 | ||
2557 | if (NILP (buffer_or_name)) | |
2558 | buffer = Fcurrent_buffer (); | |
2559 | else | |
2560 | buffer = Fget_buffer (buffer_or_name); | |
2561 | ||
017b2bad | 2562 | if (BUFFERP (buffer)) |
496e208e | 2563 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2564 | else |
2565 | return Qnil; | |
2566 | } | |
2567 | ||
4b66faf3 | 2568 | static Lisp_Object |
1a13852e MR |
2569 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2570 | { | |
5386012d | 2571 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2572 | } |
2573 | ||
2574 | ||
2575 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2576 | Sdelete_other_windows_internal, 0, 2, "", | |
2577 | doc: /* Make WINDOW fill its frame. | |
2578 | Only the frame WINDOW is on is affected. WINDOW may be any window and | |
2579 | defaults to the selected one. | |
2580 | ||
2581 | Optional argument ROOT, if non-nil, must specify an internal window | |
2582 | containing WINDOW as a subwindow. If this is the case, replace ROOT by | |
2583 | WINDOW and leave alone any windows not contained in ROOT. | |
2584 | ||
2585 | When WINDOW is live try to reduce display jumps by keeping the text | |
2586 | previously visible in WINDOW in the same place on the frame. Doing this | |
2587 | depends on the value of (window-start WINDOW), so if calling this | |
2588 | function in a program gives strange scrolling, make sure the | |
2589 | window-start value is reasonable when this function is called. */) | |
2590 | (Lisp_Object window, Lisp_Object root) | |
2591 | { | |
2592 | struct window *w, *r, *s; | |
2593 | struct frame *f; | |
46a4ce9e PE |
2594 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
2595 | EMACS_INT startpos IF_LINT (= 0); | |
2596 | int top IF_LINT (= 0), new_top, resize_failed; | |
1a13852e MR |
2597 | |
2598 | w = decode_any_window (window); | |
2599 | XSETWINDOW (window, w); | |
2600 | f = XFRAME (w->frame); | |
2601 | ||
2602 | if (NILP (root)) | |
2603 | /* ROOT is the frame's root window. */ | |
2604 | { | |
2605 | root = FRAME_ROOT_WINDOW (f); | |
2606 | r = XWINDOW (root); | |
2607 | } | |
2608 | else | |
2609 | /* ROOT must be an ancestor of WINDOW. */ | |
2610 | { | |
2611 | r = decode_any_window (root); | |
2612 | pwindow = XWINDOW (window)->parent; | |
2613 | while (!NILP (pwindow)) | |
2614 | if (EQ (pwindow, root)) | |
2615 | break; | |
2616 | else | |
2617 | pwindow = XWINDOW (pwindow)->parent; | |
2618 | if (!EQ (pwindow, root)) | |
2619 | error ("Specified root is not an ancestor of specified window"); | |
2620 | } | |
2621 | ||
2622 | if (EQ (window, root)) | |
2623 | /* A noop. */ | |
2624 | return Qnil; | |
2625 | /* I don't understand the "top > 0" part below. If we deal with a | |
2626 | standalone minibuffer it would have been caught by the preceding | |
2627 | test. */ | |
2628 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2629 | error ("Can't expand minibuffer to full frame"); | |
2630 | ||
2631 | if (!NILP (w->buffer)) | |
2632 | { | |
2633 | startpos = marker_position (w->start); | |
2634 | top = WINDOW_TOP_EDGE_LINE (w) | |
2635 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2636 | /* Make sure WINDOW is the frame's selected window. */ | |
2637 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2638 | { | |
2639 | if (EQ (selected_frame, w->frame)) | |
2640 | Fselect_window (window, Qnil); | |
2641 | else | |
2642 | FRAME_SELECTED_WINDOW (f) = window; | |
2643 | } | |
2644 | } | |
2645 | else | |
2646 | { | |
2647 | /* See if the frame's selected window is a subwindow of WINDOW, by | |
2648 | finding all the selected window's parents and comparing each | |
2649 | one with WINDOW. If it isn't we need a new selected window for | |
2650 | this frame. */ | |
2651 | swindow = FRAME_SELECTED_WINDOW (f); | |
2652 | while (1) | |
2653 | { | |
2654 | pwindow = swindow; | |
2655 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
2656 | pwindow = XWINDOW (pwindow)->parent; | |
2657 | ||
2658 | if (EQ (window, pwindow)) | |
2659 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2660 | as the new selected window. */ | |
2661 | break; | |
2662 | else | |
2663 | /* Else try the previous window of SWINDOW. */ | |
2664 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2665 | } | |
2666 | ||
2667 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2668 | { | |
2669 | if (EQ (selected_frame, w->frame)) | |
2670 | Fselect_window (swindow, Qnil); | |
2671 | else | |
2672 | FRAME_SELECTED_WINDOW (f) = swindow; | |
2673 | } | |
2674 | } | |
2675 | ||
2676 | BLOCK_INPUT; | |
2677 | free_window_matrices (r); | |
2678 | ||
2679 | windows_or_buffers_changed++; | |
2680 | Vwindow_list = Qnil; | |
2681 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2682 | resize_failed = 0; |
1a13852e MR |
2683 | |
2684 | if (NILP (w->buffer)) | |
2685 | { | |
1a13852e MR |
2686 | /* Resize subwindows vertically. */ |
2687 | XSETINT (delta, XINT (r->total_lines) - XINT (w->total_lines)); | |
2688 | w->top_line = r->top_line; | |
2689 | resize_root_window (window, delta, Qnil, Qnil); | |
d615d6d2 MR |
2690 | if (window_resize_check (w, 0)) |
2691 | window_resize_apply (w, 0); | |
1a13852e MR |
2692 | else |
2693 | { | |
2694 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2695 | if (window_resize_check (w, 0)) |
2696 | window_resize_apply (w, 0); | |
1a13852e MR |
2697 | else |
2698 | resize_failed = 1; | |
2699 | } | |
2700 | ||
2701 | /* Resize subwindows horizontally. */ | |
2702 | if (!resize_failed) | |
2703 | { | |
2704 | w->left_col = r->left_col; | |
2705 | XSETINT (delta, XINT (r->total_cols) - XINT (w->total_cols)); | |
2706 | w->left_col = r->left_col; | |
2707 | resize_root_window (window, delta, Qt, Qnil); | |
d615d6d2 MR |
2708 | if (window_resize_check (w, 1)) |
2709 | window_resize_apply (w, 1); | |
1a13852e MR |
2710 | else |
2711 | { | |
2712 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2713 | if (window_resize_check (w, 1)) |
2714 | window_resize_apply (w, 1); | |
1a13852e MR |
2715 | else |
2716 | resize_failed = 1; | |
2717 | } | |
2718 | } | |
2719 | ||
2720 | if (resize_failed) | |
2721 | /* Play safe, if we still can ... */ | |
2722 | { | |
2723 | window = swindow; | |
2724 | w = XWINDOW (window); | |
2725 | } | |
2726 | } | |
2727 | ||
2728 | /* Cleanly unlink WINDOW from window-tree. */ | |
2729 | if (!NILP (w->prev)) | |
2730 | /* Get SIBLING above (on the left of) WINDOW. */ | |
2731 | { | |
2732 | sibling = w->prev; | |
2733 | s = XWINDOW (sibling); | |
2734 | s->next = w->next; | |
2735 | if (!NILP (s->next)) | |
2736 | XWINDOW (s->next)->prev = sibling; | |
2737 | } | |
2738 | else | |
2739 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2740 | { | |
2741 | sibling = w->next; | |
2742 | s = XWINDOW (sibling); | |
2743 | s->prev = Qnil; | |
2744 | if (!NILP (XWINDOW (w->parent)->vchild)) | |
2745 | XWINDOW (w->parent)->vchild = sibling; | |
2746 | else | |
2747 | XWINDOW (w->parent)->hchild = sibling; | |
2748 | } | |
2749 | ||
2750 | /* Delete ROOT and all subwindows of ROOT. */ | |
2751 | if (!NILP (r->vchild)) | |
2752 | { | |
2753 | delete_all_subwindows (r->vchild); | |
2754 | r->vchild = Qnil; | |
2755 | } | |
2756 | else if (!NILP (r->hchild)) | |
2757 | { | |
2758 | delete_all_subwindows (r->hchild); | |
2759 | r->hchild = Qnil; | |
2760 | } | |
2761 | ||
2762 | replace_window (root, window, 1); | |
2763 | ||
2764 | /* Reset WINDOW's splits status. */ | |
2765 | w->splits = Qnil; | |
2766 | ||
2767 | /* This must become SWINDOW anyway ....... */ | |
2768 | if (!NILP (w->buffer) && !resize_failed) | |
2769 | { | |
2770 | /* Try to minimize scrolling, by setting the window start to the | |
2771 | point will cause the text at the old window start to be at the | |
2772 | same place on the frame. But don't try to do this if the | |
2773 | window start is outside the visible portion (as might happen | |
2774 | when the display is not current, due to typeahead). */ | |
2775 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2776 | if (new_top != top | |
2777 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
2778 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
2779 | { | |
2780 | struct position pos; | |
2781 | struct buffer *obuf = current_buffer; | |
2782 | ||
2783 | Fset_buffer (w->buffer); | |
2784 | /* This computation used to temporarily move point, but that | |
2785 | can have unwanted side effects due to text properties. */ | |
2786 | pos = *vmotion (startpos, -top, w); | |
2787 | ||
2788 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); | |
2789 | w->window_end_valid = Qnil; | |
2790 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
2791 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
2792 | : Qnil); | |
2793 | /* We need to do this, so that the window-scroll-functions | |
2794 | get called. */ | |
2795 | w->optional_new_start = Qt; | |
2796 | ||
2797 | set_buffer_internal (obuf); | |
2798 | } | |
2799 | } | |
2800 | ||
2801 | adjust_glyphs (f); | |
2802 | UNBLOCK_INPUT; | |
2803 | ||
2804 | run_window_configuration_change_hook (f); | |
2805 | ||
2806 | return Qnil; | |
2807 | } | |
2808 | ||
2809 | ||
9397e56f MR |
2810 | void |
2811 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2812 | { |
9397e56f | 2813 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2814 | } |
2815 | ||
ff58478b | 2816 | |
9397e56f MR |
2817 | /* Safely replace BUFFER with some other buffer in all windows of all |
2818 | frames, even those on other keyboards. */ | |
ff58478b RS |
2819 | |
2820 | void | |
9397e56f | 2821 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b RS |
2822 | { |
2823 | Lisp_Object tail, frame; | |
2824 | ||
9397e56f MR |
2825 | /* A single call to window_loop won't do the job because it only |
2826 | considers frames on the current keyboard. So loop manually over | |
2827 | frames, and handle each one. */ | |
ff58478b | 2828 | FOR_EACH_FRAME (tail, frame) |
9397e56f | 2829 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); |
ff58478b | 2830 | } |
7ab12479 | 2831 | \f |
a481b3ea JB |
2832 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
2833 | minimum allowable size. */ | |
5500c422 | 2834 | |
605be8af | 2835 | void |
971de7fb | 2836 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2837 | { |
628df3bf | 2838 | /* For height, we have to see: |
54b8bcb5 RS |
2839 | how many windows the frame has at minimum (one or two), |
2840 | and whether it has a menu bar or other special stuff at the top. */ | |
2841 | int min_height | |
2842 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2843 | ? MIN_SAFE_WINDOW_HEIGHT | |
2844 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2845 | |
5500c422 GM |
2846 | if (FRAME_TOP_MARGIN (frame) > 0) |
2847 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2848 | |
2849 | if (*rows < min_height) | |
2850 | *rows = min_height; | |
2851 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2852 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2853 | } | |
2854 | ||
79fd290e | 2855 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2856 | Return 1 if window width is ok after adjustment; 0 if window |
2857 | is still too narrow. */ | |
2858 | ||
2859 | static int | |
971de7fb | 2860 | adjust_window_margins (struct window *w) |
949cf20f KS |
2861 | { |
2862 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2863 | - WINDOW_FRINGE_COLS (w) | |
2864 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2865 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2866 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2867 | ||
2868 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2869 | return 1; | |
2870 | ||
2871 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2872 | return 0; | |
2873 | ||
2874 | /* Window's text area is too narrow, but reducing the window | |
2875 | margins will fix that. */ | |
2876 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2877 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2878 | { | |
2879 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2880 | w->left_margin_cols = w->right_margin_cols | |
2881 | = make_number (margin_cols/2); | |
2882 | else | |
2883 | w->right_margin_cols = make_number (margin_cols); | |
2884 | } | |
2885 | else | |
2886 | w->left_margin_cols = make_number (margin_cols); | |
2887 | return 1; | |
2888 | } | |
562dd5e9 | 2889 | \f |
562dd5e9 MR |
2890 | static Lisp_Object Fset_window_margins (Lisp_Object, Lisp_Object, Lisp_Object); |
2891 | static Lisp_Object Fset_window_fringes (Lisp_Object, Lisp_Object, Lisp_Object, | |
2892 | Lisp_Object); | |
2893 | static Lisp_Object Fset_window_scroll_bars (Lisp_Object, Lisp_Object, | |
2894 | Lisp_Object, Lisp_Object); | |
2895 | static Lisp_Object Fset_window_vscroll (Lisp_Object, Lisp_Object, Lisp_Object); | |
6b61353c | 2896 | |
9397e56f MR |
2897 | /* The following three routines are needed for running a window's |
2898 | configuration change hook. */ | |
562dd5e9 MR |
2899 | static void |
2900 | run_funs (Lisp_Object funs) | |
2901 | { | |
2902 | for (; CONSP (funs); funs = XCDR (funs)) | |
2903 | if (!EQ (XCAR (funs), Qt)) | |
2904 | call0 (XCAR (funs)); | |
2905 | } | |
6b61353c | 2906 | |
9397e56f MR |
2907 | static Lisp_Object |
2908 | select_window_norecord (Lisp_Object window) | |
2909 | { | |
2910 | return WINDOW_LIVE_P (window) | |
2911 | ? Fselect_window (window, Qt) : selected_window; | |
2912 | } | |
2913 | ||
2914 | static Lisp_Object | |
2915 | select_frame_norecord (Lisp_Object frame) | |
2916 | { | |
2917 | return FRAME_LIVE_P (XFRAME (frame)) | |
2918 | ? Fselect_frame (frame, Qt) : selected_frame; | |
2919 | } | |
6b61353c | 2920 | |
562dd5e9 MR |
2921 | void |
2922 | run_window_configuration_change_hook (struct frame *f) | |
2923 | { | |
2924 | int count = SPECPDL_INDEX (); | |
2925 | Lisp_Object frame, global_wcch | |
2926 | = Fdefault_value (Qwindow_configuration_change_hook); | |
2927 | XSETFRAME (frame, f); | |
6b61353c | 2928 | |
562dd5e9 MR |
2929 | if (NILP (Vrun_hooks)) |
2930 | return; | |
6b61353c | 2931 | |
562dd5e9 MR |
2932 | /* Use the right buffer. Matters when running the local hooks. */ |
2933 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 2934 | { |
562dd5e9 MR |
2935 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
2936 | Fset_buffer (Fwindow_buffer (Qnil)); | |
2937 | } | |
6a44ffb3 | 2938 | |
1a13852e MR |
2939 | if (SELECTED_FRAME () != f) |
2940 | { | |
2941 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
2942 | select_frame_norecord (frame); | |
2943 | } | |
2944 | ||
6a44ffb3 SM |
2945 | /* Look for buffer-local values. */ |
2946 | { | |
2947 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
2948 | for (; CONSP (windows); windows = XCDR (windows)) | |
2949 | { | |
2950 | Lisp_Object window = XCAR (windows); | |
2951 | Lisp_Object buffer = Fwindow_buffer (window); | |
2952 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
2953 | buffer))) | |
2954 | { | |
46a4ce9e | 2955 | int inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
2956 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
2957 | select_window_norecord (window); | |
2958 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
2959 | buffer)); | |
46a4ce9e | 2960 | unbind_to (inner_count, Qnil); |
fec89261 | 2961 | } |
6a44ffb3 SM |
2962 | } |
2963 | } | |
047aaeb9 | 2964 | |
6a44ffb3 SM |
2965 | run_funs (global_wcch); |
2966 | unbind_to (count, Qnil); | |
ef264c42 SM |
2967 | } |
2968 | ||
1a13852e MR |
2969 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
2970 | Srun_window_configuration_change_hook, 1, 1, 0, | |
2971 | doc: /* Run `window-configuration-change-hook' for FRAME. */) | |
2972 | (Lisp_Object frame) | |
2973 | { | |
2974 | CHECK_LIVE_FRAME (frame); | |
2975 | run_window_configuration_change_hook (XFRAME (frame)); | |
2976 | return Qnil; | |
2977 | } | |
2978 | ||
5500c422 GM |
2979 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2980 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
2981 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
2982 | margins, fringes, and scroll-bar settings of the window are not | |
2983 | reset from the buffer's local settings. */ | |
7ab12479 | 2984 | |
5500c422 | 2985 | void |
971de7fb | 2986 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
2987 | { |
2988 | struct window *w = XWINDOW (window); | |
2989 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 2990 | int count = SPECPDL_INDEX (); |
c3b232e4 | 2991 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
2992 | |
2993 | w->buffer = buffer; | |
86e48436 RS |
2994 | |
2995 | if (EQ (window, selected_window)) | |
4b4deea2 | 2996 | BVAR (b, last_selected_window) = window; |
beb4e312 | 2997 | |
c49a0495 KS |
2998 | /* Let redisplay errors through. */ |
2999 | b->display_error_modiff = 0; | |
3000 | ||
beb4e312 | 3001 | /* Update time stamps of buffer display. */ |
4b4deea2 TT |
3002 | if (INTEGERP (BVAR (b, display_count))) |
3003 | XSETINT (BVAR (b, display_count), XINT (BVAR (b, display_count)) + 1); | |
3004 | BVAR (b, display_time) = Fcurrent_time (); | |
86e48436 | 3005 | |
d834a2e9 | 3006 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 3007 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 3008 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 3009 | w->window_end_valid = Qnil; |
c3b232e4 | 3010 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3011 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3012 | vscroll. This case happens for example when called from |
3013 | change_frame_size_1, where we use a dummy call to | |
3014 | Fset_window_buffer on the frame's selected window (and no other) | |
3015 | just in order to run window-configuration-change-hook. | |
3016 | Resetting hscroll and vscroll here is problematic for things like | |
3017 | image-mode and doc-view-mode since it resets the image's position | |
3018 | whenever we resize the frame. */ | |
3019 | w->hscroll = w->min_hscroll = make_number (0); | |
3020 | w->vscroll = 0; | |
3021 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3022 | set_marker_restricted (w->start, | |
3023 | make_number (b->last_window_start), | |
3024 | buffer); | |
3025 | w->start_at_line_beg = Qnil; | |
3026 | w->force_start = Qnil; | |
3027 | XSETFASTINT (w->last_modified, 0); | |
3028 | XSETFASTINT (w->last_overlay_modified, 0); | |
3029 | } | |
3030 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3031 | I doubt it's worth the trouble. */ | |
7ab12479 | 3032 | windows_or_buffers_changed++; |
5b03d3c0 | 3033 | |
da39107c | 3034 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3035 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3036 | because that might itself be a local variable. */ | |
da39107c | 3037 | if (window_initialized) |
5b03d3c0 | 3038 | { |
da39107c | 3039 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3040 | Fset_buffer (buffer); |
3041 | } | |
3042 | ||
a1562258 SM |
3043 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3044 | ||
949cf20f KS |
3045 | if (!keep_margins_p) |
3046 | { | |
3047 | /* Set left and right marginal area width etc. from buffer. */ | |
3048 | ||
79fd290e | 3049 | /* This may call adjust_window_margins three times, so |
949cf20f | 3050 | temporarily disable window margins. */ |
6b61353c KH |
3051 | Lisp_Object save_left = w->left_margin_cols; |
3052 | Lisp_Object save_right = w->right_margin_cols; | |
3053 | ||
949cf20f KS |
3054 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3055 | ||
3056 | Fset_window_fringes (window, | |
4b4deea2 TT |
3057 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3058 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3059 | |
3060 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3061 | BVAR (b, scroll_bar_width), |
3062 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3063 | |
6b61353c KH |
3064 | w->left_margin_cols = save_left; |
3065 | w->right_margin_cols = save_right; | |
3066 | ||
949cf20f | 3067 | Fset_window_margins (window, |
4b4deea2 | 3068 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3069 | } |
7ab12479 | 3070 | |
5500c422 GM |
3071 | if (run_hooks_p) |
3072 | { | |
3073 | if (! NILP (Vwindow_scroll_functions)) | |
3074 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3075 | Fmarker_position (w->start)); | |
ef264c42 | 3076 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3077 | } |
543f5fb1 | 3078 | |
5b03d3c0 | 3079 | unbind_to (count, Qnil); |
5500c422 | 3080 | } |
5b03d3c0 | 3081 | |
a7ca3326 | 3082 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3083 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
9397e56f MR |
3084 | WINDOW has to be a live window and defaults to the selected one. |
3085 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. | |
3086 | ||
3087 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3088 | display margins, fringe widths, and scroll bar settings are preserved; | |
3089 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3090 | or the frame defaults. Return nil. | |
d653c8cc | 3091 | |
7bfac547 MR |
3092 | This function throws an error when WINDOW is strongly dedicated to its |
3093 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3094 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3095 | |
8fef9de1 MR |
3096 | This function runs `window-scroll-functions' before running |
3097 | `window-configuration-change-hook'. */) | |
5842a27b | 3098 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3099 | { |
d653c8cc | 3100 | register Lisp_Object tem, buffer; |
5500c422 | 3101 | register struct window *w = decode_window (window); |
5500c422 | 3102 | |
bed0c171 | 3103 | XSETWINDOW (window, w); |
d653c8cc | 3104 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3105 | CHECK_BUFFER (buffer); |
4b4deea2 | 3106 | if (NILP (BVAR (XBUFFER (buffer), name))) |
5500c422 GM |
3107 | error ("Attempt to display deleted buffer"); |
3108 | ||
3109 | tem = w->buffer; | |
aac0c6e3 MR |
3110 | if (NILP (tem)) |
3111 | error ("Window is deleted"); | |
3112 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3113 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3114 | { |
9397e56f MR |
3115 | if (!EQ (tem, buffer)) |
3116 | { | |
3117 | if (EQ (w->dedicated, Qt)) | |
3118 | /* WINDOW is strongly dedicated to its buffer, signal an | |
3119 | error. */ | |
3120 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3121 | else | |
3122 | /* WINDOW is weakly dedicated to its buffer, reset | |
3123 | dedicatedness. */ | |
3124 | w->dedicated = Qnil; | |
3125 | ||
3126 | call1 (Qrecord_window_buffer, window); | |
3127 | } | |
5500c422 GM |
3128 | |
3129 | unshow_buffer (w); | |
3130 | } | |
3131 | ||
949cf20f | 3132 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3133 | |
9397e56f | 3134 | return Qnil; |
c6932ecd | 3135 | } |
b7354ddf | 3136 | \f |
7e5cf297 | 3137 | static Lisp_Object |
971de7fb | 3138 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3139 | { |
87478b52 | 3140 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3141 | } |
3142 | ||
6b61353c KH |
3143 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3144 | 0, 1, 0, | |
5a1048a5 | 3145 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3146 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3147 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3148 | displaying that buffer. */) |
5842a27b | 3149 | (Lisp_Object object) |
6b61353c KH |
3150 | { |
3151 | if (NILP (object)) | |
3152 | { | |
3153 | windows_or_buffers_changed++; | |
3154 | update_mode_lines++; | |
3155 | return Qt; | |
3156 | } | |
3157 | ||
3158 | if (WINDOWP (object)) | |
3159 | { | |
3160 | struct window *w = XWINDOW (object); | |
3161 | mark_window_display_accurate (object, 0); | |
3162 | w->update_mode_line = Qt; | |
3163 | if (BUFFERP (w->buffer)) | |
3164 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3165 | ++update_mode_lines; | |
3166 | return Qt; | |
3167 | } | |
0cc1039f | 3168 | |
6b61353c KH |
3169 | if (STRINGP (object)) |
3170 | object = Fget_buffer (object); | |
4b4deea2 | 3171 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
6b61353c KH |
3172 | { |
3173 | /* Walk all windows looking for buffer, and force update | |
3174 | of each of those windows. */ | |
3175 | ||
3176 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3177 | return NILP (object) ? Qnil : Qt; | |
3178 | } | |
3179 | ||
3180 | /* If nothing suitable was found, just return. | |
3181 | We could signal an error, but this feature will typically be used | |
3182 | asynchronously in timers or process sentinels, so we don't. */ | |
3183 | return Qnil; | |
3184 | } | |
3185 | ||
3186 | ||
7ab12479 | 3187 | void |
971de7fb | 3188 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3189 | { |
3190 | register struct buffer *old = current_buffer; | |
3191 | register Lisp_Object window; | |
3192 | register struct window *w; | |
3193 | ||
4b4deea2 | 3194 | BVAR (XBUFFER (buf), directory) = BVAR (current_buffer, directory); |
bccd3dd1 | 3195 | |
7ab12479 | 3196 | Fset_buffer (buf); |
c6367666 | 3197 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3198 | BEGV = BEG; |
3199 | ZV = Z; | |
3200 | SET_PT (BEG); | |
7ab12479 JB |
3201 | set_buffer_internal (old); |
3202 | ||
e67a1dea | 3203 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3204 | call1 (Vtemp_buffer_show_function, buf); |
3205 | else | |
3206 | { | |
e10ac9f1 MR |
3207 | window = display_buffer (buf, Vtemp_buffer_show_specifiers, Qnil); |
3208 | /* Reset Vtemp_buffer_show_specifiers immediately so it won't | |
3209 | affect subsequent calls. */ | |
3210 | Vtemp_buffer_show_specifiers = Qnil; | |
7ab12479 | 3211 | |
1ae1a37d | 3212 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3213 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3214 | Vminibuf_scroll_window = window; |
3215 | w = XWINDOW (window); | |
d834a2e9 | 3216 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3217 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3218 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3219 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3220 | |
beb4e312 | 3221 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3222 | and its buffer current. */ |
dee091a3 JD |
3223 | { |
3224 | int count = SPECPDL_INDEX (); | |
3225 | Lisp_Object prev_window, prev_buffer; | |
3226 | prev_window = selected_window; | |
3227 | XSETBUFFER (prev_buffer, old); | |
3228 | ||
3229 | /* Select the window that was chosen, for running the hook. | |
3230 | Note: Both Fselect_window and select_window_norecord may | |
3231 | set-buffer to the buffer displayed in the window, | |
3232 | so we need to save the current buffer. --stef */ | |
3233 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3234 | record_unwind_protect (select_window_norecord, prev_window); | |
3235 | Fselect_window (window, Qt); | |
3236 | Fset_buffer (w->buffer); | |
3237 | Frun_hooks (1, &Qtemp_buffer_show_hook); | |
3238 | unbind_to (count, Qnil); | |
3239 | } | |
2cccc823 | 3240 | } |
7ab12479 | 3241 | } |
3e21b6a7 SM |
3242 | |
3243 | DEFUN ("internal-temp-output-buffer-show", | |
3244 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
3245 | 1, 1, 0, | |
3246 | doc: /* Internal function for `with-output-to-temp-buffer''. */) | |
3247 | (Lisp_Object buf) | |
3248 | { | |
3249 | temp_output_buffer_show (buf); | |
3250 | return Qnil; | |
3251 | } | |
7ab12479 | 3252 | \f |
1a13852e MR |
3253 | /* Make new window, have it replace WINDOW in window-tree, and make |
3254 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3255 | horizontal child). */ | |
3256 | static void | |
3257 | make_parent_window (Lisp_Object window, int horflag) | |
3258 | { | |
3259 | Lisp_Object parent; | |
3260 | register struct window *o, *p; | |
3261 | int i; | |
3262 | ||
3263 | o = XWINDOW (window); | |
3264 | p = allocate_window (); | |
3265 | for (i = 0; i < VECSIZE (struct window); ++i) | |
3266 | ((struct Lisp_Vector *) p)->contents[i] | |
3267 | = ((struct Lisp_Vector *) o)->contents[i]; | |
3268 | XSETWINDOW (parent, p); | |
3269 | ||
3270 | ++sequence_number; | |
3271 | XSETFASTINT (p->sequence_number, sequence_number); | |
1a13852e MR |
3272 | |
3273 | replace_window (window, parent, 1); | |
3274 | ||
3275 | o->next = Qnil; | |
3276 | o->prev = Qnil; | |
3277 | o->parent = parent; | |
3278 | ||
3279 | p->hchild = horflag ? window : Qnil; | |
3280 | p->vchild = horflag ? Qnil : window; | |
3281 | p->start = Qnil; | |
3282 | p->pointm = Qnil; | |
3283 | p->buffer = Qnil; | |
3284 | p->splits = Qnil; | |
3285 | p->nest = Qnil; | |
3286 | p->window_parameters = Qnil; | |
3287 | } | |
3288 | ||
496e208e MR |
3289 | /* Make new window from scratch. */ |
3290 | Lisp_Object | |
3291 | make_window (void) | |
3292 | { | |
3293 | Lisp_Object window; | |
3294 | register struct window *w; | |
3295 | ||
3296 | w = allocate_window (); | |
3297 | /* Initialize all Lisp data. */ | |
3298 | w->frame = w->mini_p = Qnil; | |
3299 | w->next = w->prev = w->hchild = w->vchild = w->parent = Qnil; | |
3300 | XSETFASTINT (w->left_col, 0); | |
3301 | XSETFASTINT (w->top_line, 0); | |
3302 | XSETFASTINT (w->total_lines, 0); | |
3303 | XSETFASTINT (w->total_cols, 0); | |
3304 | w->normal_lines = make_float (1.0); | |
3305 | w->normal_cols = make_float (1.0); | |
3306 | XSETFASTINT (w->new_total, 0); | |
3307 | XSETFASTINT (w->new_normal, 0); | |
3308 | w->buffer = Qnil; | |
3309 | w->start = Fmake_marker (); | |
3310 | w->pointm = Fmake_marker (); | |
3311 | w->force_start = w->optional_new_start = Qnil; | |
3312 | XSETFASTINT (w->hscroll, 0); | |
3313 | XSETFASTINT (w->min_hscroll, 0); | |
3314 | XSETFASTINT (w->use_time, 0); | |
3315 | ++sequence_number; | |
3316 | XSETFASTINT (w->sequence_number, sequence_number); | |
496e208e MR |
3317 | w->temslot = w->last_modified = w->last_overlay_modified = Qnil; |
3318 | XSETFASTINT (w->last_point, 0); | |
3319 | w->last_had_star = w->vertical_scroll_bar = Qnil; | |
3320 | w->left_margin_cols = w->right_margin_cols = Qnil; | |
3321 | w->left_fringe_width = w->right_fringe_width = Qnil; | |
3322 | w->fringes_outside_margins = Qnil; | |
3323 | w->scroll_bar_width = Qnil; | |
3324 | w->vertical_scroll_bar_type = Qt; | |
3325 | w->last_mark_x = w->last_mark_y = Qnil; | |
3326 | XSETFASTINT (w->window_end_pos, 0); | |
3327 | XSETFASTINT (w->window_end_vpos, 0); | |
3328 | w->window_end_valid = w->update_mode_line = Qnil; | |
3329 | w->start_at_line_beg = w->display_table = w->dedicated = Qnil; | |
3330 | w->base_line_number = w->base_line_pos = w->region_showing = Qnil; | |
3331 | w->column_number_displayed = w->redisplay_end_trigger = Qnil; | |
3332 | w->splits = w->nest = w->window_parameters = Qnil; | |
3333 | w->prev_buffers = w->next_buffers = Qnil; | |
3334 | /* Initialize non-Lisp data. */ | |
3335 | w->desired_matrix = w->current_matrix = 0; | |
3336 | w->nrows_scale_factor = w->ncols_scale_factor = 1; | |
3337 | memset (&w->cursor, 0, sizeof (w->cursor)); | |
3338 | memset (&w->last_cursor, 0, sizeof (w->last_cursor)); | |
3339 | memset (&w->phys_cursor, 0, sizeof (w->phys_cursor)); | |
3340 | w->phys_cursor_type = -1; | |
3341 | w->phys_cursor_width = -1; | |
3342 | w->last_cursor_off_p = w->cursor_off_p = 0; | |
3343 | w->must_be_updated_p = 0; | |
3344 | w->pseudo_window_p = 0; | |
3345 | w->frozen_window_start_p = 0; | |
3346 | w->vscroll = 0; | |
496e208e MR |
3347 | /* Reset window_list. */ |
3348 | Vwindow_list = Qnil; | |
3349 | /* Return window. */ | |
3350 | XSETWINDOW (window, w); | |
3351 | return window; | |
3352 | } | |
3353 | \f | |
3354 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3355 | doc: /* Set new total size of WINDOW to SIZE. | |
3356 | Return SIZE. | |
3357 | ||
3358 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3359 | WINDOW and return the sum. | |
3360 | ||
3361 | Note: This function does not operate on any subwindows of WINDOW. */) | |
3362 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) | |
3363 | { | |
3364 | struct window *w = decode_any_window (window); | |
3365 | ||
3366 | CHECK_NUMBER (size); | |
3367 | if (NILP (add)) | |
3368 | XSETINT (w->new_total, XINT (size)); | |
3369 | else | |
3370 | XSETINT (w->new_total, XINT (w->new_total) + XINT (size)); | |
3371 | ||
3372 | return w->new_total; | |
3373 | } | |
3374 | ||
3375 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3376 | doc: /* Set new normal size of WINDOW to SIZE. | |
3377 | Return SIZE. | |
3378 | ||
3379 | Note: This function does not operate on any subwindows of WINDOW. */) | |
3380 | (Lisp_Object window, Lisp_Object size) | |
3381 | { | |
3382 | struct window *w = decode_any_window (window); | |
3383 | ||
3384 | w->new_normal = size; | |
3385 | return w->new_normal; | |
7ab12479 JB |
3386 | } |
3387 | ||
1a13852e MR |
3388 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3389 | non-zero) to w->new_total would result in correct heights (widths) | |
3390 | for window W and recursively all subwindows of W. | |
3391 | ||
3392 | Note: This function does not check any of `window-fixed-size-p', | |
3393 | `window-min-height' or `window-min-width'. It does check that window | |
3394 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3395 | static int |
d615d6d2 | 3396 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3397 | { |
3398 | struct window *c; | |
3399 | ||
3400 | if (!NILP (w->vchild)) | |
3401 | /* W is a vertical combination. */ | |
3402 | { | |
3403 | c = XWINDOW (w->vchild); | |
3404 | if (horflag) | |
3405 | /* All subwindows of W must have the same width as W. */ | |
3406 | { | |
3407 | while (c) | |
3408 | { | |
3409 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
d615d6d2 | 3410 | || !window_resize_check (c, horflag)) |
1a13852e MR |
3411 | return 0; |
3412 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3413 | } | |
3414 | return 1; | |
3415 | } | |
3416 | else | |
3417 | /* The sum of the heights of the subwindows of W must equal W's | |
3418 | height. */ | |
3419 | { | |
3420 | int sum_of_sizes = 0; | |
3421 | while (c) | |
3422 | { | |
d615d6d2 | 3423 | if (!window_resize_check (c, horflag)) |
1a13852e MR |
3424 | return 0; |
3425 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
3426 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3427 | } | |
3428 | return (sum_of_sizes == XINT (w->new_total)); | |
3429 | } | |
3430 | } | |
3431 | else if (!NILP (w->hchild)) | |
3432 | /* W is a horizontal combination. */ | |
3433 | { | |
3434 | c = XWINDOW (w->hchild); | |
3435 | if (horflag) | |
3436 | /* The sum of the widths of the subwindows of W must equal W's | |
3437 | width. */ | |
3438 | { | |
3439 | int sum_of_sizes = 0; | |
3440 | while (c) | |
3441 | { | |
d615d6d2 | 3442 | if (!window_resize_check (c, horflag)) |
1a13852e MR |
3443 | return 0; |
3444 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
3445 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3446 | } | |
3447 | return (sum_of_sizes == XINT (w->new_total)); | |
3448 | } | |
3449 | else | |
3450 | /* All subwindows of W must have the same height as W. */ | |
3451 | { | |
3452 | while (c) | |
3453 | { | |
3454 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
d615d6d2 | 3455 | || !window_resize_check (c, horflag)) |
1a13852e MR |
3456 | return 0; |
3457 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3458 | } | |
3459 | return 1; | |
3460 | } | |
3461 | } | |
3462 | else | |
3463 | /* A leaf window. Make sure it's not too small. The following | |
3464 | hardcodes the values of `window-safe-min-width' (2) and | |
3465 | `window-safe-min-height' (1) which are defined in window.el. */ | |
3466 | return XINT (w->new_total) >= (horflag ? 2 : 1); | |
3467 | } | |
3468 | ||
3469 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
3470 | w->new_total for window W and recursively all subwindows of W. Also | |
3471 | calculate and assign the new vertical (horizontal) start positions of | |
3472 | each of these windows. | |
3473 | ||
3474 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3475 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3476 | static void |
d615d6d2 | 3477 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3478 | { |
46a4ce9e | 3479 | struct window *c; |
1a13852e MR |
3480 | int pos; |
3481 | ||
3482 | /* Note: Assigning new_normal requires that the new total size of the | |
3483 | parent window has been set *before*. */ | |
3484 | if (horflag) | |
3485 | { | |
3486 | w->total_cols = w->new_total; | |
3487 | if (NUMBERP (w->new_normal)) | |
3488 | w->normal_cols = w->new_normal; | |
3489 | ||
3490 | pos = XINT (w->left_col); | |
3491 | } | |
3492 | else | |
3493 | { | |
3494 | w->total_lines = w->new_total; | |
3495 | if (NUMBERP (w->new_normal)) | |
3496 | w->normal_lines = w->new_normal; | |
3497 | ||
3498 | pos = XINT (w->top_line); | |
3499 | } | |
3500 | ||
3501 | if (!NILP (w->vchild)) | |
3502 | /* W is a vertical combination. */ | |
3503 | { | |
3504 | c = XWINDOW (w->vchild); | |
3505 | while (c) | |
3506 | { | |
3507 | if (horflag) | |
3508 | XSETFASTINT (c->left_col, pos); | |
3509 | else | |
3510 | XSETFASTINT (c->top_line, pos); | |
d615d6d2 | 3511 | window_resize_apply (c, horflag); |
1a13852e MR |
3512 | if (!horflag) |
3513 | pos = pos + XINT (c->total_lines); | |
3514 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3515 | } | |
3516 | } | |
3517 | else if (!NILP (w->hchild)) | |
3518 | /* W is a horizontal combination. */ | |
3519 | { | |
3520 | c = XWINDOW (w->hchild); | |
3521 | while (c) | |
3522 | { | |
3523 | if (horflag) | |
3524 | XSETFASTINT (c->left_col, pos); | |
3525 | else | |
3526 | XSETFASTINT (c->top_line, pos); | |
d615d6d2 | 3527 | window_resize_apply (c, horflag); |
1a13852e MR |
3528 | if (horflag) |
3529 | pos = pos + XINT (c->total_cols); | |
3530 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3531 | } | |
3532 | } | |
3533 | ||
3534 | /* Clear out some redisplay caches. */ | |
3535 | XSETFASTINT (w->last_modified, 0); | |
3536 | XSETFASTINT (w->last_overlay_modified, 0); | |
3537 | } | |
3538 | ||
3539 | ||
d615d6d2 | 3540 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 1, 2, 0, |
1a13852e MR |
3541 | doc: /* Apply requested size values for window-tree of FRAME. |
3542 | Optional argument HORIZONTAL omitted or nil means apply requested height | |
3543 | values. HORIZONTAL non-nil means apply requested width values. | |
3544 | ||
3545 | This function checks whether the requested values sum up to a valid | |
3546 | window layout, recursively assigns the new sizes of all subwindows and | |
3547 | calculates and assigns the new start positions of these windows. | |
3548 | ||
3549 | Note: This function does not check any of `window-fixed-size-p', | |
3550 | `window-min-height' or `window-min-width'. All these checks have to | |
3551 | be applied on the Elisp level. */) | |
3552 | (Lisp_Object frame, Lisp_Object horizontal) | |
3553 | { | |
3554 | struct frame *f; | |
3555 | struct window *r; | |
3556 | int horflag = !NILP (horizontal); | |
3557 | ||
3558 | if (NILP (frame)) | |
3559 | frame = selected_frame; | |
3560 | CHECK_LIVE_FRAME (frame); | |
3561 | ||
3562 | f = XFRAME (frame); | |
3563 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3564 | ||
d615d6d2 | 3565 | if (!window_resize_check (r, horflag) |
1a13852e MR |
3566 | || ! EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
3567 | return Qnil; | |
3568 | ||
3569 | BLOCK_INPUT; | |
d615d6d2 | 3570 | window_resize_apply (r, horflag); |
1a13852e MR |
3571 | |
3572 | windows_or_buffers_changed++; | |
3573 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3574 | ||
3575 | adjust_glyphs (f); | |
3576 | UNBLOCK_INPUT; | |
3577 | ||
3578 | run_window_configuration_change_hook (f); | |
3579 | ||
3580 | return Qt; | |
3581 | } | |
3582 | ||
3583 | ||
3584 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3585 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3586 | SIZE. | |
3587 | ||
3588 | This function can delete all windows but the selected one in order to | |
3589 | satisfy the request. The result will be meaningful if and only if | |
3590 | F's windows have meaningful sizes when you call this. */ | |
3591 | void | |
3592 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3593 | { | |
3594 | Lisp_Object root = f->root_window; | |
3595 | struct window *r = XWINDOW (root); | |
3596 | Lisp_Object mini = f->minibuffer_window; | |
3597 | struct window *m; | |
3598 | /* new_size is the new size of the frame's root window. */ | |
3599 | int new_size = (horflag | |
3600 | ? size | |
3601 | : (size | |
3602 | - FRAME_TOP_MARGIN (f) | |
3603 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3604 | ? 1 : 0))); | |
3605 | ||
3606 | XSETFASTINT (r->top_line, FRAME_TOP_MARGIN (f)); | |
3607 | if (NILP (r->vchild) && NILP (r->hchild)) | |
3608 | /* For a leaf root window just set the size. */ | |
3609 | if (horflag) | |
3610 | XSETFASTINT (r->total_cols, new_size); | |
3611 | else | |
3612 | XSETFASTINT (r->total_lines, new_size); | |
3613 | else | |
3614 | { | |
3615 | /* old_size is the old size of the frame's root window. */ | |
3616 | int old_size = XFASTINT (horflag ? r->total_cols : r->total_lines); | |
3617 | Lisp_Object delta; | |
3618 | ||
3619 | XSETINT (delta, new_size - old_size); | |
3620 | /* Try a "normal" resize first. */ | |
3621 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
d615d6d2 MR |
3622 | if (window_resize_check (r, horflag) && new_size == XINT (r->new_total)) |
3623 | window_resize_apply (r, horflag); | |
1a13852e MR |
3624 | else |
3625 | { | |
3626 | /* Try with "reasonable" minimum sizes next. */ | |
3627 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3628 | if (window_resize_check (r, horflag) |
1a13852e | 3629 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3630 | window_resize_apply (r, horflag); |
1a13852e MR |
3631 | else |
3632 | { | |
3633 | /* Finally, try with "safe" minimum sizes. */ | |
3634 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3635 | if (window_resize_check (r, horflag) |
1a13852e | 3636 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3637 | window_resize_apply (r, horflag); |
1a13852e MR |
3638 | else |
3639 | { | |
3640 | /* We lost. Delete all windows but the frame's | |
3641 | selected one. */ | |
3642 | root = f->selected_window; | |
3643 | Fdelete_other_windows_internal (root, Qnil); | |
3644 | if (horflag) | |
3645 | XSETFASTINT (XWINDOW (root)->total_cols, new_size); | |
3646 | else | |
3647 | XSETFASTINT (XWINDOW (root)->total_lines, new_size); | |
3648 | } | |
3649 | } | |
3650 | } | |
3651 | } | |
3652 | ||
3653 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3654 | { | |
3655 | m = XWINDOW (mini); | |
3656 | if (horflag) | |
3657 | XSETFASTINT (m->total_cols, size); | |
3658 | else | |
3659 | { | |
3660 | /* Are we sure we always want 1 line here? */ | |
3661 | XSETFASTINT (m->total_lines, 1); | |
3662 | XSETFASTINT (m->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
3663 | } | |
3664 | } | |
3665 | } | |
3666 | ||
3667 | ||
3668 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3669 | doc: /* Split window OLD. | |
3670 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3671 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3672 | |
3673 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3674 | be located below WINDOW. SIDE `above' means the new window shall be | |
3675 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3676 | lines of the new window including space reserved for the mode and/or | |
3677 | header line. | |
3678 | ||
3679 | SIDE t (or `right') specifies that the new window shall be located on | |
3680 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3681 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3682 | number of columns of the new window including space reserved for fringes | |
3683 | and the scrollbar or a divider column. | |
3684 | ||
3685 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3686 | according to the SIDE argument. | |
3687 | ||
3688 | The new total and normal sizes of all involved windows must have been | |
3689 | set correctly. See the code of `split-window' for how this is done. */) | |
3690 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3691 | { | |
3692 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3693 | parent window or an internal window we have to install as OLD's new | |
3694 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3695 | provided OLD is a leaf window, or to the frame's selected window. | |
3696 | NEW (*n) is the new window created with some parameters taken from | |
3697 | REFERENCE (*r). */ | |
3698 | register Lisp_Object new, frame, reference; | |
3699 | register struct window *o, *p, *n, *r; | |
3700 | struct frame *f; | |
3701 | int horflag | |
3702 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3703 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
3704 | int do_nest = 0; | |
3705 | ||
3706 | CHECK_WINDOW (old); | |
3707 | o = XWINDOW (old); | |
3708 | frame = WINDOW_FRAME (o); | |
3709 | f = XFRAME (frame); | |
3710 | ||
3711 | CHECK_NUMBER (total_size); | |
3712 | ||
3713 | /* Set do_nest to 1 if we have to make a new parent window. We do | |
3714 | that if either `window-nest' is non-nil, or OLD has no parent, or | |
3715 | OLD is ortho-combined. */ | |
3716 | do_nest = | |
3717 | !NILP (Vwindow_nest) | |
3718 | || NILP (o->parent) | |
3719 | || NILP (horflag | |
3720 | ? (XWINDOW (o->parent)->hchild) | |
3721 | : (XWINDOW (o->parent)->vchild)); | |
3722 | ||
3723 | /* We need a live reference window to initialize some parameters. */ | |
3724 | if (WINDOW_LIVE_P (old)) | |
3725 | /* OLD is live, use it as reference window. */ | |
3726 | reference = old; | |
3727 | else | |
3728 | /* Use the frame's selected window as reference window. */ | |
3729 | reference = FRAME_SELECTED_WINDOW (f); | |
3730 | r = XWINDOW (reference); | |
3731 | ||
3732 | /* The following bugs are caught by `split-window'. */ | |
3733 | if (MINI_WINDOW_P (o)) | |
3734 | error ("Attempt to split minibuffer window"); | |
3735 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3736 | error ("Size of new window too small (after split)"); | |
3737 | else if (!do_nest && !NILP (Vwindow_splits)) | |
3738 | /* `window-splits' non-nil means try to resize OLD's siblings | |
3739 | proportionally. */ | |
3740 | { | |
3741 | p = XWINDOW (o->parent); | |
3742 | /* Temporarily pretend we split the parent window. */ | |
3743 | XSETINT (p->new_total, | |
3744 | XINT (horflag ? p->total_cols : p->total_lines) | |
3745 | - XINT (total_size)); | |
d615d6d2 | 3746 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3747 | error ("Window sizes don't fit"); |
3748 | else | |
3749 | /* Undo the temporary pretension. */ | |
3750 | p->new_total = horflag ? p->total_cols : p->total_lines; | |
3751 | } | |
3752 | else | |
3753 | { | |
d615d6d2 | 3754 | if (!window_resize_check (o, horflag)) |
1a13852e MR |
3755 | error ("Resizing old window failed"); |
3756 | else if (XINT (total_size) + XINT (o->new_total) | |
3757 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
3758 | error ("Sum of sizes of old and new window don't fit"); | |
3759 | } | |
3760 | ||
3761 | /* This is our point of no return. */ | |
3762 | if (do_nest) | |
3763 | { | |
3764 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3765 | by make_parent_window and we need it below for assigning it to | |
3766 | p->new_normal. */ | |
3767 | Lisp_Object new_normal = horflag ? o->normal_cols : o->normal_lines; | |
3768 | ||
3769 | make_parent_window (old, horflag); | |
3770 | p = XWINDOW (o->parent); | |
3771 | /* Store value of `window-nest' in new parent's nest slot. */ | |
3772 | p->nest = Vwindow_nest; | |
3773 | /* Have PARENT inherit splits slot value from OLD. */ | |
3774 | p->splits = o->splits; | |
3775 | /* Store value of `window-splits' in OLD's splits slot. */ | |
3776 | o->splits = Vwindow_splits; | |
3777 | /* These get applied below. */ | |
3778 | p->new_total = horflag ? o->total_cols : o->total_lines; | |
3779 | p->new_normal = new_normal; | |
3780 | } | |
3781 | else | |
3782 | p = XWINDOW (o->parent); | |
3783 | ||
3784 | windows_or_buffers_changed++; | |
3785 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3786 | new = make_window (); | |
3787 | n = XWINDOW (new); | |
3788 | n->frame = frame; | |
3789 | n->parent = o->parent; | |
3790 | n->vchild = n->hchild = Qnil; | |
3791 | ||
3792 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3793 | { | |
3794 | n->prev = o->prev; | |
3795 | if (NILP (n->prev)) | |
3796 | if (horflag) | |
3797 | p->hchild = new; | |
3798 | else | |
3799 | p->vchild = new; | |
3800 | else | |
3801 | XWINDOW (n->prev)->next = new; | |
3802 | n->next = old; | |
3803 | o->prev = new; | |
3804 | } | |
3805 | else | |
3806 | { | |
3807 | n->next = o->next; | |
3808 | if (!NILP (n->next)) | |
3809 | XWINDOW (n->next)->prev = new; | |
3810 | n->prev = old; | |
3811 | o->next = new; | |
3812 | } | |
3813 | ||
3814 | n->buffer = Qt; | |
3815 | n->window_end_valid = Qnil; | |
3816 | memset (&n->last_cursor, 0, sizeof n->last_cursor); | |
3817 | ||
3818 | /* Get special geometry settings from reference window. */ | |
3819 | n->left_margin_cols = r->left_margin_cols; | |
3820 | n->right_margin_cols = r->right_margin_cols; | |
3821 | n->left_fringe_width = r->left_fringe_width; | |
3822 | n->right_fringe_width = r->right_fringe_width; | |
3823 | n->fringes_outside_margins = r->fringes_outside_margins; | |
3824 | n->scroll_bar_width = r->scroll_bar_width; | |
3825 | n->vertical_scroll_bar_type = r->vertical_scroll_bar_type; | |
3826 | ||
3827 | /* Store `window-splits' in NEW's splits slot. */ | |
3828 | n->splits = Vwindow_splits; | |
3829 | ||
3830 | /* Directly assign orthogonal coordinates and sizes. */ | |
3831 | if (horflag) | |
3832 | { | |
3833 | n->top_line = o->top_line; | |
3834 | n->total_lines = o->total_lines; | |
3835 | } | |
3836 | else | |
3837 | { | |
3838 | n->left_col = o->left_col; | |
3839 | n->total_cols = o->total_cols; | |
3840 | } | |
3841 | ||
d615d6d2 | 3842 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e MR |
3843 | get them ready here. */ |
3844 | n->new_total = total_size; | |
3845 | n->new_normal = normal_size; | |
3846 | ||
3847 | BLOCK_INPUT; | |
d615d6d2 | 3848 | window_resize_apply (p, horflag); |
1a13852e MR |
3849 | adjust_glyphs (f); |
3850 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3851 | any hooks. */ | |
3852 | set_window_buffer (new, r->buffer, 0, 1); | |
3853 | UNBLOCK_INPUT; | |
3854 | ||
3855 | /* Maybe we should run the scroll functions in Elisp (which already | |
3856 | runs the configuration change hook). */ | |
3857 | if (! NILP (Vwindow_scroll_functions)) | |
3858 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
3859 | Fmarker_position (n->start)); | |
3860 | /* Return NEW. */ | |
3861 | return new; | |
3862 | } | |
3863 | ||
3864 | ||
3865 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3866 | doc: /* Remove WINDOW from its frame. | |
3867 | WINDOW defaults to the selected window. Return nil. Signal an error | |
3868 | when WINDOW is the only window on its frame. */) | |
3869 | (register Lisp_Object window) | |
3870 | { | |
3871 | register Lisp_Object parent, sibling, frame, root; | |
3872 | struct window *w, *p, *s, *r; | |
3873 | struct frame *f; | |
3874 | int horflag; | |
3875 | int before_sibling = 0; | |
3876 | ||
3877 | w = decode_any_window (window); | |
3878 | XSETWINDOW (window, w); | |
3879 | if (NILP (w->buffer) && NILP (w->hchild) && NILP (w->vchild)) | |
3880 | /* It's a no-op to delete an already deleted window. */ | |
3881 | return Qnil; | |
3882 | ||
3883 | parent = w->parent; | |
3884 | if (NILP (parent)) | |
3885 | /* Never delete a minibuffer or frame root window. */ | |
3886 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
3887 | else if (NILP (w->prev) && NILP (w->next)) | |
3888 | /* Rather bow out here, this case should be handled on the Elisp | |
3889 | level. */ | |
3890 | error ("Attempt to delete sole window of parent"); | |
3891 | ||
3892 | p = XWINDOW (parent); | |
3893 | horflag = NILP (p->vchild); | |
3894 | ||
3895 | frame = WINDOW_FRAME (w); | |
3896 | f = XFRAME (frame); | |
3897 | ||
3898 | root = FRAME_ROOT_WINDOW (f); | |
3899 | r = XWINDOW (root); | |
3900 | ||
3901 | /* Unlink WINDOW from window tree. */ | |
3902 | if (NILP (w->prev)) | |
3903 | /* Get SIBLING below (on the right of) WINDOW. */ | |
3904 | { | |
3905 | /* before_sibling 1 means WINDOW is the first child of its | |
3906 | parent and thus before the sibling. */ | |
3907 | before_sibling = 1; | |
3908 | sibling = w->next; | |
3909 | s = XWINDOW (sibling); | |
3910 | s->prev = Qnil; | |
3911 | if (horflag) | |
3912 | p->hchild = sibling; | |
3913 | else | |
3914 | p->vchild = sibling; | |
3915 | } | |
3916 | else | |
3917 | /* Get SIBLING above (on the left of) WINDOW. */ | |
3918 | { | |
3919 | sibling = w->prev; | |
3920 | s = XWINDOW (sibling); | |
3921 | s->next = w->next; | |
562dd5e9 MR |
3922 | if (!NILP (s->next)) |
3923 | XWINDOW (s->next)->prev = sibling; | |
7ab12479 JB |
3924 | } |
3925 | ||
d615d6d2 | 3926 | if (window_resize_check (r, horflag) |
562dd5e9 MR |
3927 | && EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
3928 | /* We can delete WINDOW now. */ | |
3929 | { | |
3930 | /* Block input. */ | |
3931 | BLOCK_INPUT; | |
d615d6d2 | 3932 | window_resize_apply (p, horflag); |
0d384044 | 3933 | |
562dd5e9 MR |
3934 | windows_or_buffers_changed++; |
3935 | Vwindow_list = Qnil; | |
3936 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 3937 | |
562dd5e9 MR |
3938 | w->next = Qnil; /* Don't delete w->next too. */ |
3939 | free_window_matrices (w); | |
bd99e242 | 3940 | |
562dd5e9 | 3941 | if (!NILP (w->vchild)) |
0d384044 | 3942 | { |
562dd5e9 MR |
3943 | delete_all_subwindows (w->vchild); |
3944 | w->vchild = Qnil; | |
0d384044 | 3945 | } |
562dd5e9 | 3946 | else if (!NILP (w->hchild)) |
bd99e242 | 3947 | { |
562dd5e9 MR |
3948 | delete_all_subwindows (w->hchild); |
3949 | w->hchild = Qnil; | |
bd99e242 | 3950 | } |
562dd5e9 | 3951 | else if (!NILP (w->buffer)) |
bd99e242 | 3952 | { |
562dd5e9 MR |
3953 | unshow_buffer (w); |
3954 | unchain_marker (XMARKER (w->pointm)); | |
3955 | unchain_marker (XMARKER (w->start)); | |
3956 | w->buffer = Qnil; | |
bd99e242 RS |
3957 | } |
3958 | ||
562dd5e9 MR |
3959 | if (NILP (s->prev) && NILP (s->next)) |
3960 | /* A matrjoshka where SIBLING has become the only child of | |
3961 | PARENT. */ | |
c32de52a | 3962 | { |
562dd5e9 MR |
3963 | /* Put SIBLING into PARENT's place. */ |
3964 | replace_window (parent, sibling, 0); | |
3965 | /* Have SIBLING inherit the following three slot values from | |
3966 | PARENT (the nest slot is not inherited). */ | |
3967 | s->normal_cols = p->normal_cols; | |
3968 | s->normal_lines = p->normal_lines; | |
3969 | s->splits = p->splits; | |
3970 | /* Mark PARENT as deleted. */ | |
3971 | p->vchild = p->hchild = Qnil; | |
3972 | /* Try to merge SIBLING into its new parent. */ | |
3973 | recombine_windows (sibling); | |
c32de52a RS |
3974 | } |
3975 | ||
562dd5e9 MR |
3976 | adjust_glyphs (f); |
3977 | ||
3978 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
3979 | /* We deleted the frame's selected window. */ | |
0d384044 | 3980 | { |
562dd5e9 MR |
3981 | /* Use the frame's first window as fallback ... */ |
3982 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
3983 | /* ... but preferably use its most recently used window. */ | |
3984 | Lisp_Object mru_window; | |
0d384044 | 3985 | |
562dd5e9 MR |
3986 | /* `get-mru-window' might fail for some reason so play it safe |
3987 | - promote the first window _without recording it_ first. */ | |
3988 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
3989 | Fselect_window (new_selected_window, Qt); | |
3990 | else | |
3991 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
0d384044 | 3992 | |
562dd5e9 | 3993 | UNBLOCK_INPUT; |
0d384044 | 3994 | |
562dd5e9 MR |
3995 | /* Now look whether `get-mru-window' gets us something. */ |
3996 | mru_window = call1 (Qget_mru_window, frame); | |
3997 | if (WINDOW_LIVE_P (mru_window) | |
3998 | && EQ (XWINDOW (mru_window)->frame, frame)) | |
3999 | new_selected_window = mru_window; | |
bd99e242 | 4000 | |
562dd5e9 MR |
4001 | /* If all ended up well, we now promote the mru window. */ |
4002 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4003 | Fselect_window (new_selected_window, Qnil); | |
4004 | else | |
4005 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
0d384044 RS |
4006 | } |
4007 | else | |
562dd5e9 | 4008 | UNBLOCK_INPUT; |
0d384044 | 4009 | |
562dd5e9 MR |
4010 | /* Must be run by the caller: |
4011 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4012 | } |
562dd5e9 MR |
4013 | else |
4014 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4015 | { |
562dd5e9 MR |
4016 | if (before_sibling) |
4017 | { | |
4018 | s->prev = window; | |
4019 | if (horflag) | |
4020 | p->hchild = window; | |
4021 | else | |
4022 | p->vchild = window; | |
4023 | } | |
4024 | else | |
4025 | { | |
4026 | s->next = window; | |
4027 | if (!NILP (w->next)) | |
4028 | XWINDOW (w->next)->prev = window; | |
4029 | } | |
4030 | error ("Deletion failed"); | |
0d384044 RS |
4031 | } |
4032 | ||
0d384044 RS |
4033 | return Qnil; |
4034 | } | |
f984d4fc GM |
4035 | \f |
4036 | /*********************************************************************** | |
4037 | Resizing Mini-Windows | |
4038 | ***********************************************************************/ | |
4039 | ||
562dd5e9 MR |
4040 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4041 | can. */ | |
4042 | void | |
4043 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4044 | { |
562dd5e9 MR |
4045 | struct frame *f = XFRAME (w->frame); |
4046 | struct window *r; | |
4047 | Lisp_Object root, value; | |
f984d4fc | 4048 | |
562dd5e9 MR |
4049 | xassert (MINI_WINDOW_P (w)); |
4050 | xassert (delta >= 0); | |
f984d4fc | 4051 | |
562dd5e9 MR |
4052 | root = FRAME_ROOT_WINDOW (f); |
4053 | r = XWINDOW (root); | |
5386012d MR |
4054 | value = call2 (Qwindow_resize_root_window_vertically, |
4055 | root, make_number (- delta)); | |
d615d6d2 | 4056 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4057 | { |
562dd5e9 | 4058 | BLOCK_INPUT; |
d615d6d2 | 4059 | window_resize_apply (r, 0); |
f984d4fc | 4060 | |
562dd5e9 MR |
4061 | /* Grow the mini-window. */ |
4062 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); | |
4063 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - XINT (value)); | |
4064 | XSETFASTINT (w->last_modified, 0); | |
4065 | XSETFASTINT (w->last_overlay_modified, 0); | |
f984d4fc | 4066 | |
562dd5e9 MR |
4067 | adjust_glyphs (f); |
4068 | UNBLOCK_INPUT; | |
f984d4fc GM |
4069 | } |
4070 | } | |
4071 | ||
4072 | ||
562dd5e9 MR |
4073 | /* Shrink mini-window W. */ |
4074 | void | |
4075 | shrink_mini_window (struct window *w) | |
f984d4fc | 4076 | { |
562dd5e9 MR |
4077 | struct frame *f = XFRAME (w->frame); |
4078 | struct window *r; | |
4079 | Lisp_Object root, value; | |
4080 | EMACS_INT size; | |
43b4a21f | 4081 | |
562dd5e9 | 4082 | xassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4083 | |
562dd5e9 MR |
4084 | size = XINT (w->total_lines); |
4085 | if (size > 1) | |
4086 | { | |
4087 | root = FRAME_ROOT_WINDOW (f); | |
4088 | r = XWINDOW (root); | |
5386012d | 4089 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4090 | root, make_number (size - 1)); |
d615d6d2 | 4091 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4092 | { |
562dd5e9 | 4093 | BLOCK_INPUT; |
d615d6d2 | 4094 | window_resize_apply (r, 0); |
43b4a21f | 4095 | |
562dd5e9 MR |
4096 | /* Shrink the mini-window. */ |
4097 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); | |
4098 | XSETFASTINT (w->total_lines, 1); | |
43b4a21f | 4099 | |
562dd5e9 MR |
4100 | XSETFASTINT (w->last_modified, 0); |
4101 | XSETFASTINT (w->last_overlay_modified, 0); | |
43b4a21f | 4102 | |
562dd5e9 MR |
4103 | adjust_glyphs (f); |
4104 | UNBLOCK_INPUT; | |
f984d4fc | 4105 | } |
562dd5e9 MR |
4106 | /* If the above failed for whatever strange reason we must make a |
4107 | one window frame here. The same routine will be needed when | |
4108 | shrinking the frame (and probably when making the initial | |
4109 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4110 | } |
4111 | } | |
4112 | ||
562dd5e9 MR |
4113 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4114 | doc: /* Resize minibuffer window WINDOW. */) | |
4115 | (Lisp_Object window) | |
f984d4fc | 4116 | { |
562dd5e9 MR |
4117 | struct window *w = XWINDOW (window); |
4118 | struct window *r; | |
4119 | struct frame *f; | |
4120 | int height; | |
177c0ea7 | 4121 | |
562dd5e9 MR |
4122 | CHECK_WINDOW (window); |
4123 | f = XFRAME (w->frame); | |
177c0ea7 | 4124 | |
562dd5e9 MR |
4125 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
4126 | error ("Not a valid minibuffer window"); | |
4127 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4128 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4129 | |
562dd5e9 MR |
4130 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
4131 | height = XINT (r->total_lines) + XINT (w->total_lines); | |
d615d6d2 | 4132 | if (window_resize_check (r, 0) |
562dd5e9 MR |
4133 | && XINT (w->new_total) > 0 |
4134 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4135 | { |
562dd5e9 | 4136 | BLOCK_INPUT; |
d615d6d2 | 4137 | window_resize_apply (r, 0); |
f984d4fc | 4138 | |
562dd5e9 MR |
4139 | w->total_lines = w->new_total; |
4140 | XSETFASTINT (w->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
177c0ea7 | 4141 | |
562dd5e9 MR |
4142 | windows_or_buffers_changed++; |
4143 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4144 | adjust_glyphs (f); |
562dd5e9 | 4145 | UNBLOCK_INPUT; |
f984d4fc | 4146 | |
562dd5e9 MR |
4147 | run_window_configuration_change_hook (f); |
4148 | return Qt; | |
86c8e823 | 4149 | } |
562dd5e9 | 4150 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4151 | } |
562dd5e9 | 4152 | \f |
5500c422 GM |
4153 | /* Mark window cursors off for all windows in the window tree rooted |
4154 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4155 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4156 | the frame are cleared. */ | |
4157 | ||
4158 | void | |
971de7fb | 4159 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4160 | { |
4161 | while (w) | |
4162 | { | |
4163 | if (!NILP (w->hchild)) | |
4164 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4165 | else if (!NILP (w->vchild)) | |
4166 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4167 | else | |
4168 | w->phys_cursor_on_p = 0; | |
4169 | ||
4170 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4171 | } | |
4172 | } | |
4173 | ||
4174 | ||
e9c195b1 | 4175 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4176 | |
4177 | int | |
971de7fb | 4178 | window_internal_height (struct window *w) |
7ab12479 | 4179 | { |
949cf20f | 4180 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4181 | |
e9c195b1 GM |
4182 | if (!MINI_WINDOW_P (w)) |
4183 | { | |
4184 | if (!NILP (w->parent) | |
4185 | || !NILP (w->vchild) | |
4186 | || !NILP (w->hchild) | |
4187 | || !NILP (w->next) | |
4188 | || !NILP (w->prev) | |
4189 | || WINDOW_WANTS_MODELINE_P (w)) | |
4190 | --ht; | |
7ab12479 | 4191 | |
e9c195b1 GM |
4192 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4193 | --ht; | |
4194 | } | |
7ab12479 JB |
4195 | |
4196 | return ht; | |
4197 | } | |
5500c422 GM |
4198 | \f |
4199 | /************************************************************************ | |
4200 | Window Scrolling | |
4201 | ***********************************************************************/ | |
535e0b8e | 4202 | |
5500c422 | 4203 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4204 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4205 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4206 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4207 | means don't signal an error if we try to move over BEGV or ZV, | |
4208 | respectively. */ | |
7ab12479 | 4209 | |
101d1605 | 4210 | static void |
971de7fb | 4211 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 4212 | { |
cba59f77 RS |
4213 | immediate_quit = 1; |
4214 | ||
5500c422 GM |
4215 | /* If we must, use the pixel-based version which is much slower than |
4216 | the line-based one but can handle varying line heights. */ | |
4217 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4218 | window_scroll_pixel_based (window, n, whole, noerror); | |
4219 | else | |
4220 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4221 | |
4222 | immediate_quit = 0; | |
5500c422 GM |
4223 | } |
4224 | ||
4225 | ||
4226 | /* Implementation of window_scroll that works based on pixel line | |
4227 | heights. See the comment of window_scroll for parameter | |
4228 | descriptions. */ | |
4229 | ||
4230 | static void | |
971de7fb | 4231 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4232 | { |
4233 | struct it it; | |
4234 | struct window *w = XWINDOW (window); | |
4235 | struct text_pos start; | |
5500c422 | 4236 | int this_scroll_margin; |
9d14503e | 4237 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4238 | int vscrolled = 0; |
5a857365 | 4239 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4240 | |
4241 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4242 | |
5500c422 | 4243 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4244 | the screen. Allow PT to be partially visible, otherwise |
4245 | something like (scroll-down 1) with PT in the line before | |
4246 | the partially visible one would recenter. */ | |
5a857365 KS |
4247 | |
4248 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4249 | { |
4250 | /* Move backward half the height of the window. Performance note: | |
4251 | vmotion used here is about 10% faster, but would give wrong | |
4252 | results for variable height lines. */ | |
4253 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4254 | it.current_y = it.last_visible_y; | |
f204989e | 4255 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4256 | |
5500c422 GM |
4257 | /* The function move_iterator_vertically may move over more than |
4258 | the specified y-distance. If it->w is small, e.g. a | |
4259 | mini-buffer window, we may end up in front of the window's | |
4260 | display area. This is the case when Start displaying at the | |
4261 | start of the line containing PT in this case. */ | |
4262 | if (it.current_y <= 0) | |
4263 | { | |
4264 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4265 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4266 | it.current_y = 0; |
4267 | } | |
4268 | ||
4269 | start = it.current.pos; | |
4270 | } | |
e56263e5 KS |
4271 | else if (auto_window_vscroll_p) |
4272 | { | |
5a857365 | 4273 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4274 | { |
4275 | int px; | |
4276 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4277 | if (whole) | |
e856c216 KS |
4278 | dy = max ((window_box_height (w) |
4279 | - next_screen_context_lines * dy), | |
4280 | dy); | |
e56263e5 KS |
4281 | dy *= n; |
4282 | ||
5a857365 | 4283 | if (n < 0) |
e56263e5 | 4284 | { |
5a857365 KS |
4285 | /* Only vscroll backwards if already vscrolled forwards. */ |
4286 | if (w->vscroll < 0 && rtop > 0) | |
4287 | { | |
4288 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4289 | Fset_window_vscroll (window, make_number (px), Qt); | |
4290 | return; | |
4291 | } | |
e56263e5 | 4292 | } |
5a857365 | 4293 | if (n > 0) |
e56263e5 | 4294 | { |
5a857365 KS |
4295 | /* Do vscroll if already vscrolled or only display line. */ |
4296 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4297 | { | |
4298 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4299 | Fset_window_vscroll (window, make_number (px), Qt); | |
4300 | return; | |
4301 | } | |
4302 | ||
4303 | /* Maybe modify window start instead of scrolling. */ | |
4304 | if (rbot > 0 || w->vscroll < 0) | |
4305 | { | |
2452438f | 4306 | EMACS_INT spos; |
5a857365 KS |
4307 | |
4308 | Fset_window_vscroll (window, make_number (0), Qt); | |
4309 | /* If there are other text lines above the current row, | |
4310 | move window start to current row. Else to next row. */ | |
4311 | if (rbot > 0) | |
4312 | spos = XINT (Fline_beginning_position (Qnil)); | |
4313 | else | |
4314 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4315 | set_marker_restricted (w->start, make_number (spos), | |
4316 | w->buffer); | |
4317 | w->start_at_line_beg = Qt; | |
4318 | w->update_mode_line = Qt; | |
4319 | XSETFASTINT (w->last_modified, 0); | |
4320 | XSETFASTINT (w->last_overlay_modified, 0); | |
4321 | /* Set force_start so that redisplay_window will run the | |
4322 | window-scroll-functions. */ | |
4323 | w->force_start = Qt; | |
4324 | return; | |
4325 | } | |
e56263e5 KS |
4326 | } |
4327 | } | |
5a857365 | 4328 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4329 | Fset_window_vscroll (window, make_number (0), Qt); |
4330 | } | |
5500c422 | 4331 | |
d0c38d63 | 4332 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4333 | point in the same window line as it is now, so get that line. */ |
4334 | if (!NILP (Vscroll_preserve_screen_position)) | |
4335 | { | |
c525d842 | 4336 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4337 | calls to scroll-up, scroll-down and other commands that |
4338 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4339 | possibility of point becoming "stuck" on a tall line when |
4340 | scrolling by one line. */ | |
66fe93d1 | 4341 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4342 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4343 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4344 | { |
4345 | start_display (&it, w, start); | |
4346 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4347 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4348 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4349 | } |
5500c422 GM |
4350 | } |
4351 | else | |
c876b227 SM |
4352 | window_scroll_pixel_based_preserve_y |
4353 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4354 | |
4355 | /* Move iterator it from start the specified distance forward or | |
4356 | backward. The result is the new window start. */ | |
4357 | start_display (&it, w, start); | |
4358 | if (whole) | |
4359 | { | |
2452438f | 4360 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
4361 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4362 | dy = max ((window_box_height (w) | |
4363 | - next_screen_context_lines * dy), | |
4364 | dy) * n; | |
d72340d4 GM |
4365 | |
4366 | /* Note that move_it_vertically always moves the iterator to the | |
4367 | start of a line. So, if the last line doesn't have a newline, | |
4368 | we would end up at the start of the line ending at ZV. */ | |
4369 | if (dy <= 0) | |
e856c216 KS |
4370 | { |
4371 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4372 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4373 | looking at an image that is taller that the window height. */ |
4374 | while (start_pos == IT_CHARPOS (it) | |
4375 | && start_pos > BEGV) | |
e4cc2dfc | 4376 | move_it_by_lines (&it, -1); |
e856c216 | 4377 | } |
d72340d4 | 4378 | else if (dy > 0) |
bed83ee4 | 4379 | { |
bed83ee4 KS |
4380 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4381 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4382 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4383 | looking at an image that is taller that the window height. */ |
4384 | while (start_pos == IT_CHARPOS (it) | |
4385 | && start_pos < ZV) | |
e4cc2dfc | 4386 | move_it_by_lines (&it, 1); |
bed83ee4 | 4387 | } |
5500c422 GM |
4388 | } |
4389 | else | |
e4cc2dfc | 4390 | move_it_by_lines (&it, n); |
5500c422 | 4391 | |
96ae58c8 RS |
4392 | /* We failed if we find ZV is already on the screen (scrolling up, |
4393 | means there's nothing past the end), or if we can't start any | |
4394 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4395 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4396 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4397 | { |
5cdb3cf3 MB |
4398 | if (IT_CHARPOS (it) == ZV) |
4399 | { | |
07ce8b53 RS |
4400 | if (it.current_y < it.last_visible_y |
4401 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4402 | > it.last_visible_y)) |
a74eca50 GM |
4403 | { |
4404 | /* The last line was only partially visible, make it fully | |
4405 | visible. */ | |
4406 | w->vscroll = (it.last_visible_y | |
4407 | - it.current_y + it.max_ascent + it.max_descent); | |
4408 | adjust_glyphs (it.f); | |
4409 | } | |
5cdb3cf3 MB |
4410 | else if (noerror) |
4411 | return; | |
cf402f3f | 4412 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 4413 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 4414 | else |
ba96a5cf | 4415 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 4416 | } |
5500c422 | 4417 | else |
5cdb3cf3 MB |
4418 | { |
4419 | if (w->vscroll != 0) | |
4420 | /* The first line was only partially visible, make it fully | |
4421 | visible. */ | |
4422 | w->vscroll = 0; | |
4423 | else if (noerror) | |
4424 | return; | |
4425 | else | |
ba96a5cf | 4426 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
4427 | } |
4428 | ||
4429 | /* If control gets here, then we vscrolled. */ | |
4430 | ||
4431 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4432 | ||
4433 | /* Don't try to change the window start below. */ | |
4434 | vscrolled = 1; | |
5500c422 GM |
4435 | } |
4436 | ||
5cdb3cf3 MB |
4437 | if (! vscrolled) |
4438 | { | |
2452438f EZ |
4439 | EMACS_INT pos = IT_CHARPOS (it); |
4440 | EMACS_INT bytepos; | |
e68def1e AS |
4441 | |
4442 | /* If in the middle of a multi-glyph character move forward to | |
4443 | the next character. */ | |
4444 | if (in_display_vector_p (&it)) | |
4445 | { | |
4446 | ++pos; | |
4447 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4448 | } | |
4449 | ||
5cdb3cf3 | 4450 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4451 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4452 | w->buffer); |
dad67609 RS |
4453 | bytepos = XMARKER (w->start)->bytepos; |
4454 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4455 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4456 | w->update_mode_line = Qt; |
4457 | XSETFASTINT (w->last_modified, 0); | |
4458 | XSETFASTINT (w->last_overlay_modified, 0); | |
4459 | /* Set force_start so that redisplay_window will run the | |
4460 | window-scroll-functions. */ | |
4461 | w->force_start = Qt; | |
4462 | } | |
177c0ea7 | 4463 | |
dc297565 RS |
4464 | /* The rest of this function uses current_y in a nonstandard way, |
4465 | not including the height of the header line if any. */ | |
5500c422 | 4466 | it.current_y = it.vpos = 0; |
177c0ea7 | 4467 | |
940f53e5 RS |
4468 | /* Move PT out of scroll margins. |
4469 | This code wants current_y to be zero at the window start position | |
4470 | even if there is a header line. */ | |
4471 | this_scroll_margin = max (0, scroll_margin); | |
4472 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4473 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4474 | ||
4475 | if (n > 0) | |
5500c422 | 4476 | { |
940f53e5 RS |
4477 | /* We moved the window start towards ZV, so PT may be now |
4478 | in the scroll margin at the top. */ | |
4479 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4480 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4481 | && (NILP (Vscroll_preserve_screen_position) | |
4482 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4483 | /* We found PT at a legitimate height. Leave it alone. */ |
4484 | ; | |
66fe93d1 | 4485 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4486 | { |
fa3c3426 RS |
4487 | /* If we have a header line, take account of it. |
4488 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4489 | move_it_to (&it, -1, |
4490 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4491 | window_scroll_pixel_based_preserve_y |
4492 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4493 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4494 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4495 | } | |
4496 | else | |
5500c422 | 4497 | { |
5500c422 | 4498 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4499 | { |
4500 | int prev = it.current_y; | |
e4cc2dfc | 4501 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4502 | if (prev == it.current_y) |
4503 | break; | |
4504 | } | |
5500c422 GM |
4505 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4506 | } | |
940f53e5 RS |
4507 | } |
4508 | else if (n < 0) | |
4509 | { | |
2452438f | 4510 | EMACS_INT charpos, bytepos; |
aed328bf | 4511 | int partial_p; |
940f53e5 | 4512 | |
66fe93d1 LT |
4513 | /* Save our position, for the |
4514 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4515 | charpos = IT_CHARPOS (it); |
4516 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4517 | |
940f53e5 RS |
4518 | /* We moved the window start towards BEGV, so PT may be now |
4519 | in the scroll margin at the bottom. */ | |
4520 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4521 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4522 | - this_scroll_margin - 1), | |
4523 | -1, | |
940f53e5 RS |
4524 | MOVE_TO_POS | MOVE_TO_Y); |
4525 | ||
aed328bf KS |
4526 | /* Save our position, in case it's correct. */ |
4527 | charpos = IT_CHARPOS (it); | |
4528 | bytepos = IT_BYTEPOS (it); | |
4529 | ||
4530 | /* See if point is on a partially visible line at the end. */ | |
4531 | if (it.what == IT_EOB) | |
4532 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4533 | else | |
4534 | { | |
e4cc2dfc | 4535 | move_it_by_lines (&it, 1); |
aed328bf KS |
4536 | partial_p = it.current_y > it.last_visible_y; |
4537 | } | |
4538 | ||
bdf4ec93 RS |
4539 | if (charpos == PT && !partial_p |
4540 | && (NILP (Vscroll_preserve_screen_position) | |
4541 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4542 | /* We found PT before we found the display margin, so PT is ok. */ |
4543 | ; | |
66fe93d1 | 4544 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
4545 | { |
4546 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4547 | start_display (&it, w, start); | |
c525d842 CY |
4548 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4549 | here because we called start_display again and did not | |
4550 | alter it.current_y this time. */ | |
c876b227 SM |
4551 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4552 | window_scroll_pixel_based_preserve_y, -1, | |
4553 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4554 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4555 | } | |
4556 | else | |
4557 | { | |
aed328bf | 4558 | if (partial_p) |
5cdb3cf3 MB |
4559 | /* The last line was only partially visible, so back up two |
4560 | lines to make sure we're on a fully visible line. */ | |
4561 | { | |
e4cc2dfc | 4562 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4563 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4564 | } | |
4565 | else | |
4566 | /* No, the position we saved is OK, so use it. */ | |
4567 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4568 | } |
4569 | } | |
4570 | } | |
4571 | ||
4572 | ||
4573 | /* Implementation of window_scroll that works based on screen lines. | |
4574 | See the comment of window_scroll for parameter descriptions. */ | |
4575 | ||
4576 | static void | |
971de7fb | 4577 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4578 | { |
4579 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4580 | /* Fvertical_motion enters redisplay, which can trigger |
4581 | fontification, which in turn can modify buffer text (e.g., if the | |
4582 | fontification functions replace escape sequences with faces, as | |
4583 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4584 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4585 | Lisp_Object opoint_marker = Fpoint_marker (); | |
2452438f | 4586 | register EMACS_INT pos, pos_byte; |
7ab12479 JB |
4587 | register int ht = window_internal_height (w); |
4588 | register Lisp_Object tem; | |
4589 | int lose; | |
5500c422 | 4590 | Lisp_Object bolp; |
2452438f | 4591 | EMACS_INT startpos; |
c876b227 | 4592 | Lisp_Object original_pos = Qnil; |
101d1605 | 4593 | |
d4e7cf01 GM |
4594 | /* If scrolling screen-fulls, compute the number of lines to |
4595 | scroll from the window's height. */ | |
4596 | if (whole) | |
4597 | n *= max (1, ht - next_screen_context_lines); | |
4598 | ||
101d1605 RS |
4599 | startpos = marker_position (w->start); |
4600 | ||
c876b227 SM |
4601 | if (!NILP (Vscroll_preserve_screen_position)) |
4602 | { | |
4603 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4604 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4605 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4606 | { |
4607 | struct position posit | |
4608 | = *compute_motion (startpos, 0, 0, 0, | |
4609 | PT, ht, 0, | |
4610 | -1, XINT (w->hscroll), | |
4611 | 0, w); | |
4612 | window_scroll_preserve_vpos = posit.vpos; | |
4613 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
4614 | } | |
4615 | ||
4616 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4617 | make_number (window_scroll_preserve_vpos)); | |
4618 | } | |
0a1f771a | 4619 | |
d834a2e9 | 4620 | XSETFASTINT (tem, PT); |
6ffdb539 | 4621 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4622 | |
265a9e55 | 4623 | if (NILP (tem)) |
7ab12479 | 4624 | { |
cd2be1dd | 4625 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4626 | startpos = PT; |
7ab12479 JB |
4627 | } |
4628 | ||
345d45b2 | 4629 | SET_PT (startpos); |
5ce7b543 | 4630 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4631 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4632 | pos = PT; |
b73ea88e | 4633 | pos_byte = PT_BYTE; |
7ab12479 | 4634 | bolp = Fbolp (); |
03ab8921 EZ |
4635 | SET_PT_BOTH (marker_position (opoint_marker), |
4636 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4637 | |
4638 | if (lose) | |
f8026fd8 JB |
4639 | { |
4640 | if (noerror) | |
4641 | return; | |
4642 | else | |
ba96a5cf | 4643 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4644 | } |
7ab12479 JB |
4645 | |
4646 | if (pos < ZV) | |
7ab12479 | 4647 | { |
0c7da84e RS |
4648 | int this_scroll_margin = scroll_margin; |
4649 | ||
4650 | /* Don't use a scroll margin that is negative or too large. */ | |
4651 | if (this_scroll_margin < 0) | |
4652 | this_scroll_margin = 0; | |
4653 | ||
949cf20f KS |
4654 | if (XINT (w->total_lines) < 4 * scroll_margin) |
4655 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 4656 | |
b73ea88e | 4657 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4658 | w->start_at_line_beg = bolp; |
4659 | w->update_mode_line = Qt; | |
d834a2e9 | 4660 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4661 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4662 | /* Set force_start so that redisplay_window will run |
4663 | the window-scroll-functions. */ | |
4664 | w->force_start = Qt; | |
0c7da84e | 4665 | |
bdf4ec93 RS |
4666 | if (!NILP (Vscroll_preserve_screen_position) |
4667 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4668 | { |
b73ea88e | 4669 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4670 | Fvertical_motion (original_pos, window); |
0c7da84e | 4671 | } |
101d1605 RS |
4672 | /* If we scrolled forward, put point enough lines down |
4673 | that it is outside the scroll margin. */ | |
4674 | else if (n > 0) | |
0c7da84e | 4675 | { |
101d1605 RS |
4676 | int top_margin; |
4677 | ||
4678 | if (this_scroll_margin > 0) | |
4679 | { | |
b73ea88e | 4680 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4681 | Fvertical_motion (make_number (this_scroll_margin), window); |
4682 | top_margin = PT; | |
4683 | } | |
4684 | else | |
4685 | top_margin = pos; | |
4686 | ||
03ab8921 EZ |
4687 | if (top_margin <= marker_position (opoint_marker)) |
4688 | SET_PT_BOTH (marker_position (opoint_marker), | |
4689 | marker_byte_position (opoint_marker)); | |
5500c422 | 4690 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4691 | { |
b73ea88e | 4692 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4693 | Fvertical_motion (original_pos, window); |
101d1605 | 4694 | } |
9317a85d | 4695 | else |
335406fc | 4696 | SET_PT (top_margin); |
0c7da84e | 4697 | } |
101d1605 | 4698 | else if (n < 0) |
7ab12479 | 4699 | { |
101d1605 RS |
4700 | int bottom_margin; |
4701 | ||
0c7da84e RS |
4702 | /* If we scrolled backward, put point near the end of the window |
4703 | but not within the scroll margin. */ | |
b73ea88e | 4704 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4705 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4706 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4707 | bottom_margin = PT; | |
4708 | else | |
4709 | bottom_margin = PT + 1; | |
4710 | ||
03ab8921 EZ |
4711 | if (bottom_margin > marker_position (opoint_marker)) |
4712 | SET_PT_BOTH (marker_position (opoint_marker), | |
4713 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4714 | else |
101d1605 | 4715 | { |
5500c422 | 4716 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4717 | { |
b73ea88e | 4718 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4719 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4720 | } |
4721 | else | |
4722 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4723 | } |
7ab12479 JB |
4724 | } |
4725 | } | |
4726 | else | |
f8026fd8 JB |
4727 | { |
4728 | if (noerror) | |
4729 | return; | |
4730 | else | |
ba96a5cf | 4731 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4732 | } |
7ab12479 | 4733 | } |
5500c422 GM |
4734 | |
4735 | ||
4736 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4737 | screen-full which is defined as the height of the window minus | |
4738 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4739 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4740 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4741 | |
4742 | static void | |
971de7fb | 4743 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4744 | { |
331379bf | 4745 | int count = SPECPDL_INDEX (); |
7ab12479 | 4746 | |
1ea40aa2 | 4747 | xassert (eabs (direction) == 1); |
5500c422 GM |
4748 | |
4749 | /* If selected window's buffer isn't current, make it current for | |
4750 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4751 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4752 | { |
4753 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4754 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4755 | |
4756 | /* Make redisplay consider other windows than just selected_window. */ | |
4757 | ++windows_or_buffers_changed; | |
95605e15 | 4758 | } |
7ab12479 | 4759 | |
265a9e55 | 4760 | if (NILP (n)) |
d4e7cf01 | 4761 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4762 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4763 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4764 | else |
4765 | { | |
4766 | n = Fprefix_numeric_value (n); | |
101d1605 | 4767 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4768 | } |
95605e15 JB |
4769 | |
4770 | unbind_to (count, Qnil); | |
7ab12479 JB |
4771 | } |
4772 | ||
e0965597 | 4773 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4774 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4775 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4776 | A near full screen is `next-screen-context-lines' less than a full screen. |
4777 | Negative ARG means scroll downward. | |
4778 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4779 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4780 | (Lisp_Object arg) |
7ab12479 | 4781 | { |
413430c5 | 4782 | scroll_command (arg, 1); |
7ab12479 JB |
4783 | return Qnil; |
4784 | } | |
4785 | ||
e0965597 | 4786 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4787 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4788 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4789 | A near full screen is `next-screen-context-lines' less than a full screen. |
4790 | Negative ARG means scroll upward. | |
4791 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4792 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4793 | (Lisp_Object arg) |
7ab12479 | 4794 | { |
413430c5 | 4795 | scroll_command (arg, -1); |
7ab12479 JB |
4796 | return Qnil; |
4797 | } | |
ccd0664b RS |
4798 | \f |
4799 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4800 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4801 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4802 | showing that buffer is used. |
4803 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4804 | specifies the window. This takes precedence over | |
4805 | `other-window-scroll-buffer'. */) | |
5842a27b | 4806 | (void) |
7ab12479 | 4807 | { |
ccd0664b | 4808 | Lisp_Object window; |
7ab12479 JB |
4809 | |
4810 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4811 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4812 | window = Vminibuf_scroll_window; |
4813 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4814 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4815 | { |
4816 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4817 | if (NILP (window)) |
87478b52 | 4818 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4819 | } |
4820 | else | |
dbc4e1c1 JB |
4821 | { |
4822 | /* Nothing specified; look for a neighboring window on the same | |
4823 | frame. */ | |
4824 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4825 | ||
4826 | if (EQ (window, selected_window)) | |
4827 | /* That didn't get us anywhere; look for a window on another | |
4828 | visible frame. */ | |
4829 | do | |
4830 | window = Fnext_window (window, Qnil, Qt); | |
4831 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4832 | && ! EQ (window, selected_window)); | |
4833 | } | |
4834 | ||
b7826503 | 4835 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4836 | |
4837 | if (EQ (window, selected_window)) | |
4838 | error ("There is no other window"); | |
4839 | ||
ccd0664b RS |
4840 | return window; |
4841 | } | |
4842 | ||
4843 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4844 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4845 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4846 | The next window is the one below the current one; or the one at the top | |
4847 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4848 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4849 | When calling from a program, supply as argument a number, nil, or `-'. | |
4850 | ||
fdb82f93 | 4851 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
4852 | showing that buffer, popping the buffer up if necessary. |
4853 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4854 | specifies the window to scroll. This takes precedence over | |
4855 | `other-window-scroll-buffer'. */) | |
5842a27b | 4856 | (Lisp_Object arg) |
ccd0664b | 4857 | { |
d4e7cf01 GM |
4858 | Lisp_Object window; |
4859 | struct window *w; | |
331379bf | 4860 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
4861 | |
4862 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4863 | w = XWINDOW (window); |
7ab12479 JB |
4864 | |
4865 | /* Don't screw up if window_scroll gets an error. */ | |
4866 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4867 | ++windows_or_buffers_changed; |
7ab12479 JB |
4868 | |
4869 | Fset_buffer (w->buffer); | |
4870 | SET_PT (marker_position (w->pointm)); | |
4871 | ||
413430c5 | 4872 | if (NILP (arg)) |
d4e7cf01 | 4873 | window_scroll (window, 1, 1, 1); |
413430c5 | 4874 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4875 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4876 | else |
4877 | { | |
413430c5 EN |
4878 | if (CONSP (arg)) |
4879 | arg = Fcar (arg); | |
b7826503 | 4880 | CHECK_NUMBER (arg); |
101d1605 | 4881 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4882 | } |
4883 | ||
b73ea88e | 4884 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4885 | unbind_to (count, Qnil); |
7ab12479 JB |
4886 | |
4887 | return Qnil; | |
4888 | } | |
4889 | \f | |
e0965597 | 4890 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 4891 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4892 | Default for ARG is window width minus 2. |
4893 | Value is the total amount of leftward horizontal scrolling in | |
4894 | effect after the change. | |
23fe745a | 4895 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4896 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4897 | will not scroll a window to a column less than the value returned |
dc297565 | 4898 | by this function. This happens in an interactive call. */) |
5842a27b | 4899 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4900 | { |
c67fa410 GM |
4901 | Lisp_Object result; |
4902 | int hscroll; | |
4903 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4904 | |
265a9e55 | 4905 | if (NILP (arg)) |
abde8f8c | 4906 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
4907 | else |
4908 | arg = Fprefix_numeric_value (arg); | |
4909 | ||
c67fa410 GM |
4910 | hscroll = XINT (w->hscroll) + XINT (arg); |
4911 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4912 | ||
dc297565 | 4913 | if (!NILP (set_minimum)) |
c67fa410 GM |
4914 | w->min_hscroll = w->hscroll; |
4915 | ||
4916 | return result; | |
7ab12479 JB |
4917 | } |
4918 | ||
e0965597 | 4919 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 4920 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4921 | Default for ARG is window width minus 2. |
4922 | Value is the total amount of leftward horizontal scrolling in | |
4923 | effect after the change. | |
23fe745a | 4924 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4925 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4926 | will not scroll a window to a column less than the value returned |
dc297565 | 4927 | by this function. This happens in an interactive call. */) |
5842a27b | 4928 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4929 | { |
c67fa410 GM |
4930 | Lisp_Object result; |
4931 | int hscroll; | |
4932 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4933 | |
265a9e55 | 4934 | if (NILP (arg)) |
abde8f8c | 4935 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
4936 | else |
4937 | arg = Fprefix_numeric_value (arg); | |
4938 | ||
c67fa410 GM |
4939 | hscroll = XINT (w->hscroll) - XINT (arg); |
4940 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 4941 | |
dc297565 | 4942 | if (!NILP (set_minimum)) |
c67fa410 GM |
4943 | w->min_hscroll = w->hscroll; |
4944 | ||
4945 | return result; | |
7ab12479 JB |
4946 | } |
4947 | ||
fa832261 KS |
4948 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
4949 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 4950 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 4951 | (void) |
fa832261 KS |
4952 | { |
4953 | if (minibuf_level > 0 | |
4954 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
4955 | && WINDOW_LIVE_P (minibuf_selected_window)) |
4956 | return minibuf_selected_window; | |
4957 | ||
4958 | return Qnil; | |
4959 | } | |
4960 | ||
12c8b416 GM |
4961 | /* Value is the number of lines actually displayed in window W, |
4962 | as opposed to its height. */ | |
4963 | ||
4964 | static int | |
971de7fb | 4965 | displayed_window_lines (struct window *w) |
12c8b416 GM |
4966 | { |
4967 | struct it it; | |
4968 | struct text_pos start; | |
4969 | int height = window_box_height (w); | |
4970 | struct buffer *old_buffer; | |
4971 | int bottom_y; | |
4972 | ||
4973 | if (XBUFFER (w->buffer) != current_buffer) | |
4974 | { | |
4975 | old_buffer = current_buffer; | |
4976 | set_buffer_internal (XBUFFER (w->buffer)); | |
4977 | } | |
4978 | else | |
4979 | old_buffer = NULL; | |
4980 | ||
521b203e GM |
4981 | /* In case W->start is out of the accessible range, do something |
4982 | reasonable. This happens in Info mode when Info-scroll-down | |
4983 | calls (recenter -1) while W->start is 1. */ | |
4984 | if (XMARKER (w->start)->charpos < BEGV) | |
4985 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4986 | else if (XMARKER (w->start)->charpos > ZV) | |
4987 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4988 | else | |
4989 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4990 | ||
12c8b416 GM |
4991 | start_display (&it, w, start); |
4992 | move_it_vertically (&it, height); | |
c8bc6f65 | 4993 | bottom_y = line_bottom_y (&it); |
12c8b416 | 4994 | |
1de65f51 RS |
4995 | /* rms: On a non-window display, |
4996 | the value of it.vpos at the bottom of the screen | |
4997 | seems to be 1 larger than window_box_height (w). | |
4998 | This kludge fixes a bug whereby (move-to-window-line -1) | |
4999 | when ZV is on the last screen line | |
5000 | moves to the previous screen line instead of the last one. */ | |
5001 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5002 | height++; | |
5003 | ||
12c8b416 GM |
5004 | /* Add in empty lines at the bottom of the window. */ |
5005 | if (bottom_y < height) | |
5006 | { | |
949cf20f | 5007 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5008 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5009 | } |
5010 | ||
c8bc6f65 GM |
5011 | if (old_buffer) |
5012 | set_buffer_internal (old_buffer); | |
5013 | ||
12c8b416 GM |
5014 | return it.vpos; |
5015 | } | |
5016 | ||
5017 | ||
a7ca3326 | 5018 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5019 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5020 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5021 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5022 | bottom of the window. (ARG should be less than the height of the window.) |
5023 | ||
666e158e MB |
5024 | If ARG is omitted or nil, then recenter with point on the middle line of |
5025 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5026 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5027 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5028 | height needed); if `recenter-redisplay' has the special value `tty', | |
5029 | then only tty frame are redrawn. | |
7d1d98ee | 5030 | |
fdb82f93 PJ |
5031 | Just C-u as prefix means put point in the center of the window |
5032 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5033 | (register Lisp_Object arg) |
7ab12479 | 5034 | { |
6df47b59 | 5035 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5036 | struct buffer *buf = XBUFFER (w->buffer); |
5037 | struct buffer *obuf = current_buffer; | |
6df47b59 | 5038 | int center_p = 0; |
2452438f | 5039 | EMACS_INT charpos, bytepos; |
d6550a9f | 5040 | int iarg IF_LINT (= 0); |
f6b43440 | 5041 | int this_scroll_margin; |
7ab12479 | 5042 | |
0fa5d25b RS |
5043 | /* If redisplay is suppressed due to an error, try again. */ |
5044 | obuf->display_error_modiff = 0; | |
5045 | ||
413430c5 | 5046 | if (NILP (arg)) |
7ab12479 | 5047 | { |
666e158e MB |
5048 | if (!NILP (Vrecenter_redisplay) |
5049 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5050 | || !NILP (Ftty_type (selected_frame)))) | |
5051 | { | |
5052 | int i; | |
f02d6d5c | 5053 | |
666e158e MB |
5054 | /* Invalidate pixel data calculated for all compositions. */ |
5055 | for (i = 0; i < n_compositions; i++) | |
5056 | composition_table[i]->font = NULL; | |
7ab12479 | 5057 | |
666e158e MB |
5058 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5059 | ||
5060 | Fredraw_frame (WINDOW_FRAME (w)); | |
5061 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5062 | } | |
7d1d98ee | 5063 | |
6df47b59 | 5064 | center_p = 1; |
7ab12479 | 5065 | } |
413430c5 | 5066 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5067 | center_p = 1; |
7ab12479 JB |
5068 | else |
5069 | { | |
413430c5 | 5070 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5071 | CHECK_NUMBER (arg); |
ae12ecd7 | 5072 | iarg = XINT (arg); |
7ab12479 JB |
5073 | } |
5074 | ||
478292ed | 5075 | set_buffer_internal (buf); |
7ab12479 | 5076 | |
f6b43440 RS |
5077 | /* Do this after making BUF current |
5078 | in case scroll_margin is buffer-local. */ | |
5079 | this_scroll_margin = max (0, scroll_margin); | |
5080 | this_scroll_margin = min (this_scroll_margin, | |
5081 | XFASTINT (w->total_lines) / 4); | |
5082 | ||
521b203e | 5083 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5084 | have variable-height lines and centering point on the basis of |
5085 | line counts would lead to strange effects. */ | |
521b203e | 5086 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5087 | { |
6df47b59 GM |
5088 | if (center_p) |
5089 | { | |
521b203e GM |
5090 | struct it it; |
5091 | struct text_pos pt; | |
177c0ea7 | 5092 | |
521b203e GM |
5093 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5094 | start_display (&it, w, pt); | |
f204989e | 5095 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5096 | charpos = IT_CHARPOS (it); |
5097 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5098 | } |
f6b43440 | 5099 | else if (iarg < 0) |
6df47b59 | 5100 | { |
521b203e GM |
5101 | struct it it; |
5102 | struct text_pos pt; | |
f6b43440 | 5103 | int nlines = -iarg; |
f204989e KS |
5104 | int extra_line_spacing; |
5105 | int h = window_box_height (w); | |
177c0ea7 | 5106 | |
f6b43440 RS |
5107 | iarg = - max (-iarg, this_scroll_margin); |
5108 | ||
521b203e GM |
5109 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5110 | start_display (&it, w, pt); | |
f204989e KS |
5111 | |
5112 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5113 | move_it_by_lines (&it, 0); |
521b203e | 5114 | |
d466fa4d | 5115 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5116 | height minus what's displayed in the line containing PT, |
5117 | and the lines below. */ | |
f204989e KS |
5118 | it.current_y = 0; |
5119 | it.vpos = 0; | |
e4cc2dfc | 5120 | move_it_by_lines (&it, nlines); |
d466fa4d | 5121 | |
f204989e KS |
5122 | if (it.vpos == nlines) |
5123 | h -= it.current_y; | |
5124 | else | |
5125 | { | |
5126 | /* Last line has no newline */ | |
5127 | h -= line_bottom_y (&it); | |
5128 | it.vpos++; | |
5129 | } | |
5130 | ||
5131 | /* Don't reserve space for extra line spacing of last line. */ | |
5132 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5133 | |
5134 | /* If we can't move down NLINES lines because we hit | |
5135 | the end of the buffer, count in some empty lines. */ | |
5136 | if (it.vpos < nlines) | |
f204989e KS |
5137 | { |
5138 | nlines -= it.vpos; | |
5139 | extra_line_spacing = it.extra_line_spacing; | |
5140 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5141 | } | |
5142 | if (h <= 0) | |
5143 | return Qnil; | |
201c831a | 5144 | |
f204989e | 5145 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5146 | start_display (&it, w, pt); |
f204989e KS |
5147 | it.current_y = 0; |
5148 | move_it_vertically_backward (&it, h); | |
5149 | ||
5150 | /* If extra line spacing is present, we may move too far | |
5151 | back. This causes the last line to be only partially | |
5152 | visible (which triggers redisplay to recenter that line | |
5153 | in the middle), so move forward. | |
5154 | But ignore extra line spacing on last line, as it is not | |
5155 | considered to be part of the visible height of the line. | |
5156 | */ | |
5157 | h += extra_line_spacing; | |
5158 | while (-it.current_y > h) | |
e4cc2dfc | 5159 | move_it_by_lines (&it, 1); |
f204989e | 5160 | |
521b203e GM |
5161 | charpos = IT_CHARPOS (it); |
5162 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5163 | } |
521b203e GM |
5164 | else |
5165 | { | |
5166 | struct position pos; | |
f6b43440 | 5167 | |
f6b43440 RS |
5168 | iarg = max (iarg, this_scroll_margin); |
5169 | ||
5170 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5171 | charpos = pos.bufpos; |
5172 | bytepos = pos.bytepos; | |
5173 | } | |
5174 | } | |
5175 | else | |
5176 | { | |
5177 | struct position pos; | |
5178 | int ht = window_internal_height (w); | |
5179 | ||
5180 | if (center_p) | |
a4429c5b | 5181 | iarg = ht / 2; |
f567c488 KS |
5182 | else if (iarg < 0) |
5183 | iarg += ht; | |
f6b43440 RS |
5184 | |
5185 | /* Don't let it get into the margin at either top or bottom. */ | |
5186 | iarg = max (iarg, this_scroll_margin); | |
5187 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5188 | |
f6b43440 | 5189 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5190 | charpos = pos.bufpos; |
5191 | bytepos = pos.bytepos; | |
5192 | } | |
5193 | ||
5194 | /* Set the new window start. */ | |
5195 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5196 | w->window_end_valid = Qnil; |
177c0ea7 | 5197 | |
95605b1b RS |
5198 | w->optional_new_start = Qt; |
5199 | ||
6df47b59 GM |
5200 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5201 | w->start_at_line_beg = Qt; | |
5202 | else | |
5203 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5204 | |
478292ed | 5205 | set_buffer_internal (obuf); |
7ab12479 JB |
5206 | return Qnil; |
5207 | } | |
b7617575 | 5208 | |
81fe0836 | 5209 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5210 | 0, 1, 0, |
5211 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5212 | WINDOW defaults to the selected window. |
8fef9de1 | 5213 | |
f039b2d2 CY |
5214 | The return value does not include the mode line, any header line, nor |
5215 | any partial-height lines in the text display area. */) | |
5842a27b | 5216 | (Lisp_Object window) |
81fe0836 MB |
5217 | { |
5218 | struct window *w = decode_window (window); | |
5219 | int pixel_height = window_box_height (w); | |
949cf20f | 5220 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5221 | return make_number (line_height); |
5222 | } | |
5223 | ||
5224 | ||
7ab12479 JB |
5225 | \f |
5226 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5227 | 1, 1, "P", |
5228 | doc: /* Position point relative to window. | |
5229 | With no argument, position point at center of window. | |
5230 | An argument specifies vertical position within the window; | |
5231 | zero means top of window, negative means relative to bottom of window. */) | |
5842a27b | 5232 | (Lisp_Object arg) |
7ab12479 | 5233 | { |
b7617575 GM |
5234 | struct window *w = XWINDOW (selected_window); |
5235 | int lines, start; | |
540b6aa0 | 5236 | Lisp_Object window; |
f6b43440 RS |
5237 | #if 0 |
5238 | int this_scroll_margin; | |
5239 | #endif | |
7ab12479 | 5240 | |
794b75c7 SM |
5241 | if (!(BUFFERP (w->buffer) |
5242 | && XBUFFER (w->buffer) == current_buffer)) | |
5243 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer | |
5244 | when passed below to set_marker_both. */ | |
5245 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5246 | |
b7617575 | 5247 | window = selected_window; |
7ab12479 JB |
5248 | start = marker_position (w->start); |
5249 | if (start < BEGV || start > ZV) | |
5250 | { | |
b7617575 | 5251 | int height = window_internal_height (w); |
cd2be1dd | 5252 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5253 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5254 | w->start_at_line_beg = Fbolp (); |
5255 | w->force_start = Qt; | |
5256 | } | |
5257 | else | |
b73ea88e | 5258 | Fgoto_char (w->start); |
7ab12479 | 5259 | |
b7617575 | 5260 | lines = displayed_window_lines (w); |
f6b43440 RS |
5261 | |
5262 | #if 0 | |
5263 | this_scroll_margin = max (0, scroll_margin); | |
5264 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5265 | #endif | |
5266 | ||
b7617575 GM |
5267 | if (NILP (arg)) |
5268 | XSETFASTINT (arg, lines / 2); | |
5269 | else | |
5270 | { | |
f6b43440 RS |
5271 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5272 | ||
5273 | if (iarg < 0) | |
5274 | iarg = iarg + lines; | |
5275 | ||
5276 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5277 | to a place inside the scroll margins (which would cause the | |
5278 | next redisplay to scroll). I wrote this code, but then concluded | |
5279 | it is probably better not to install it. However, it is here | |
5280 | inside #if 0 so as not to lose it. -- rms. */ | |
5281 | ||
5282 | /* Don't let it get into the margin at either top or bottom. */ | |
5283 | iarg = max (iarg, this_scroll_margin); | |
5284 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5285 | #endif | |
5286 | ||
5287 | arg = make_number (iarg); | |
b7617575 GM |
5288 | } |
5289 | ||
c8bc6f65 | 5290 | /* Skip past a partially visible first line. */ |
163784df | 5291 | if (w->vscroll) |
163784df MB |
5292 | XSETINT (arg, XINT (arg) + 1); |
5293 | ||
540b6aa0 | 5294 | return Fvertical_motion (arg, window); |
7ab12479 | 5295 | } |
5500c422 GM |
5296 | |
5297 | ||
7ab12479 | 5298 | \f |
5500c422 GM |
5299 | /*********************************************************************** |
5300 | Window Configuration | |
5301 | ***********************************************************************/ | |
5302 | ||
7ab12479 JB |
5303 | struct save_window_data |
5304 | { | |
b102ceb1 | 5305 | struct vectorlike_header header; |
bdc727bf | 5306 | Lisp_Object selected_frame; |
7ab12479 JB |
5307 | Lisp_Object current_window; |
5308 | Lisp_Object current_buffer; | |
5309 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5310 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5311 | Lisp_Object root_window; |
bdc727bf | 5312 | Lisp_Object focus_frame; |
cbff28e8 RS |
5313 | /* A vector, each of whose elements is a struct saved_window |
5314 | for one window. */ | |
7ab12479 | 5315 | Lisp_Object saved_windows; |
b05b4e27 SM |
5316 | |
5317 | /* All fields above are traced by the GC. | |
5318 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5319 | ||
5320 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5321 | int frame_tool_bar_lines; | |
7ab12479 | 5322 | }; |
ff06df24 | 5323 | |
cbff28e8 | 5324 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5325 | struct saved_window |
ea68264b | 5326 | { |
b102ceb1 | 5327 | struct vectorlike_header header; |
496e208e | 5328 | |
28545e04 | 5329 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5330 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5331 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5332 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5333 | Lisp_Object parent, prev; |
5334 | Lisp_Object start_at_line_beg; | |
5335 | Lisp_Object display_table; | |
949cf20f KS |
5336 | Lisp_Object left_margin_cols, right_margin_cols; |
5337 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5338 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
496e208e | 5339 | Lisp_Object splits, nest, window_parameters; |
ea68264b GM |
5340 | }; |
5341 | ||
7ab12479 JB |
5342 | #define SAVED_WINDOW_N(swv,n) \ |
5343 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5344 | ||
5345 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5346 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5347 | (Lisp_Object object) |
7ab12479 | 5348 | { |
6ad0381c | 5349 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5350 | } |
5351 | ||
3f8ab7bd | 5352 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5353 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5354 | (Lisp_Object config) |
3f8ab7bd RS |
5355 | { |
5356 | register struct save_window_data *data; | |
5357 | struct Lisp_Vector *saved_windows; | |
5358 | ||
663fbbba | 5359 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5360 | |
5361 | data = (struct save_window_data *) XVECTOR (config); | |
5362 | saved_windows = XVECTOR (data->saved_windows); | |
5363 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5364 | } | |
5365 | ||
a7ca3326 | 5366 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5367 | Sset_window_configuration, 1, 1, 0, |
5368 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5369 | CONFIGURATION must be a value previously returned | |
5370 | by `current-window-configuration' (which see). | |
5371 | If CONFIGURATION was made from a frame that is now deleted, | |
5372 | only frame-independent values can be restored. In this case, | |
5373 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5374 | (Lisp_Object configuration) |
7ab12479 | 5375 | { |
7ab12479 JB |
5376 | register struct save_window_data *data; |
5377 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5378 | Lisp_Object new_current_buffer; |
fd482be5 | 5379 | Lisp_Object frame; |
6198ccd0 | 5380 | Lisp_Object auto_buffer_name; |
44fa5b1e | 5381 | FRAME_PTR f; |
2452438f | 5382 | EMACS_INT old_point = -1; |
7ab12479 | 5383 | |
663fbbba | 5384 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5385 | |
2f83aebe | 5386 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5387 | saved_windows = XVECTOR (data->saved_windows); |
5388 | ||
7ab12479 | 5389 | new_current_buffer = data->current_buffer; |
4b4deea2 | 5390 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
7ab12479 | 5391 | new_current_buffer = Qnil; |
72695e47 | 5392 | else |
73cadfc1 DK |
5393 | { |
5394 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5395 | /* The code further down "preserves point" by saving here PT in |
5396 | old_point and then setting it later back into PT. When the | |
5397 | current-selected-window and the final-selected-window both show | |
5398 | the current buffer, this suffers from the problem that the | |
5399 | current PT is the window-point of the current-selected-window, | |
5400 | while the final PT is the point of the final-selected-window, so | |
5401 | this copy from one PT to the other would end up moving the | |
5402 | window-point of the final-selected-window to the window-point of | |
5403 | the current-selected-window. So we have to be careful which | |
5404 | point of the current-buffer we copy into old_point. */ | |
5405 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5406 | && WINDOWP (selected_window) | |
5407 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5408 | && !EQ (selected_window, data->current_window)) | |
5409 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5410 | else | |
5411 | old_point = PT; | |
73cadfc1 | 5412 | else |
203eb0aa SM |
5413 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5414 | point in new_current_buffer as of the last time this buffer was | |
5415 | used. This can be non-deterministic since it can be changed by | |
5416 | things like jit-lock by mere temporary selection of some random | |
5417 | window that happens to show this buffer. | |
5418 | So if possible we want this arbitrary choice of "which point" to | |
5419 | be the one from the to-be-selected-window so as to prevent this | |
5420 | window's cursor from being copied from another window. */ | |
5421 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5422 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5423 | && !EQ (selected_window, data->current_window)) | |
5424 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5425 | else | |
5426 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5427 | } |
7ab12479 | 5428 | |
fd482be5 JB |
5429 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5430 | f = XFRAME (frame); | |
177c0ea7 | 5431 | |
fd482be5 JB |
5432 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5433 | However, there is other stuff we should still try to do below. */ | |
5434 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5435 | { |
6198ccd0 MR |
5436 | Lisp_Object window; |
5437 | Lisp_Object dead_windows = Qnil; | |
fd482be5 JB |
5438 | register struct window *w; |
5439 | register struct saved_window *p; | |
5500c422 GM |
5440 | struct window *root_window; |
5441 | struct window **leaf_windows; | |
5442 | int n_leaf_windows; | |
c4280705 | 5443 | int k, i, n; |
fd482be5 JB |
5444 | |
5445 | /* If the frame has been resized since this window configuration was | |
5446 | made, we change the frame to the size specified in the | |
5447 | configuration, restore the configuration, and then resize it | |
5448 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5449 | int previous_frame_lines = FRAME_LINES (f); |
5450 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5451 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5452 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5453 | |
d2b35234 RS |
5454 | /* The mouse highlighting code could get screwed up |
5455 | if it runs during this. */ | |
5456 | BLOCK_INPUT; | |
5457 | ||
b05b4e27 SM |
5458 | if (data->frame_lines != previous_frame_lines |
5459 | || data->frame_cols != previous_frame_cols) | |
5460 | change_frame_size (f, data->frame_lines, | |
5461 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5462 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5463 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5464 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5465 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5466 | make_number (0)); | |
4314246f | 5467 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5468 | if (data->frame_tool_bar_lines |
9ea173e8 | 5469 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5470 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5471 | make_number (0)); | |
4314246f | 5472 | #endif |
217f2871 | 5473 | #endif |
fd482be5 | 5474 | |
a46c0153 RS |
5475 | /* "Swap out" point from the selected window's buffer |
5476 | into the window itself. (Normally the pointm of the selected | |
5477 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5478 | restoring the window contents, and prevent it from |
5479 | being done later on when we select a new window. */ | |
596ae0cf RS |
5480 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5481 | { | |
5482 | w = XWINDOW (selected_window); | |
5483 | set_marker_both (w->pointm, | |
5484 | w->buffer, | |
5485 | BUF_PT (XBUFFER (w->buffer)), | |
5486 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5487 | } | |
5488 | ||
fd482be5 | 5489 | windows_or_buffers_changed++; |
29aeee73 | 5490 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5491 | |
5500c422 | 5492 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5493 | is a serious redisplay flickering problem. What we would |
5500c422 | 5494 | really like to do is to free only those matrices not reused |
9d14503e | 5495 | below. */ |
5500c422 GM |
5496 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5497 | leaf_windows | |
5498 | = (struct window **) alloca (count_windows (root_window) | |
5499 | * sizeof (struct window *)); | |
5500 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5501 | ||
fd482be5 JB |
5502 | /* Kludge Alert! |
5503 | Mark all windows now on frame as "deleted". | |
5504 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5505 | |
fd482be5 JB |
5506 | Save their current buffers in their height fields, since we may |
5507 | need it later, if a buffer saved in the configuration is now | |
5508 | dead. */ | |
fa8a67e6 | 5509 | delete_all_subwindows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5510 | |
eab3844f | 5511 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5512 | { |
5513 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5514 | window = p->window; |
5515 | w = XWINDOW (window); | |
fd482be5 | 5516 | w->next = Qnil; |
7ab12479 | 5517 | |
fd482be5 JB |
5518 | if (!NILP (p->parent)) |
5519 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5520 | XFASTINT (p->parent))->window; | |
5521 | else | |
5522 | w->parent = Qnil; | |
7ab12479 | 5523 | |
fd482be5 | 5524 | if (!NILP (p->prev)) |
7ab12479 | 5525 | { |
fd482be5 JB |
5526 | w->prev = SAVED_WINDOW_N (saved_windows, |
5527 | XFASTINT (p->prev))->window; | |
5528 | XWINDOW (w->prev)->next = p->window; | |
5529 | } | |
5530 | else | |
5531 | { | |
5532 | w->prev = Qnil; | |
5533 | if (!NILP (w->parent)) | |
5534 | { | |
949cf20f | 5535 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5536 | { |
5537 | XWINDOW (w->parent)->vchild = p->window; | |
5538 | XWINDOW (w->parent)->hchild = Qnil; | |
5539 | } | |
5540 | else | |
5541 | { | |
5542 | XWINDOW (w->parent)->hchild = p->window; | |
5543 | XWINDOW (w->parent)->vchild = Qnil; | |
5544 | } | |
5545 | } | |
5546 | } | |
5547 | ||
5548 | /* If we squirreled away the buffer in the window's height, | |
5549 | restore it now. */ | |
949cf20f KS |
5550 | if (BUFFERP (w->total_lines)) |
5551 | w->buffer = w->total_lines; | |
5552 | w->left_col = p->left_col; | |
5553 | w->top_line = p->top_line; | |
5554 | w->total_cols = p->total_cols; | |
5555 | w->total_lines = p->total_lines; | |
496e208e MR |
5556 | w->normal_cols = p->normal_cols; |
5557 | w->normal_lines = p->normal_lines; | |
fd482be5 | 5558 | w->hscroll = p->hscroll; |
ea68264b | 5559 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5560 | w->display_table = p->display_table; |
949cf20f KS |
5561 | w->left_margin_cols = p->left_margin_cols; |
5562 | w->right_margin_cols = p->right_margin_cols; | |
5563 | w->left_fringe_width = p->left_fringe_width; | |
5564 | w->right_fringe_width = p->right_fringe_width; | |
5565 | w->fringes_outside_margins = p->fringes_outside_margins; | |
5566 | w->scroll_bar_width = p->scroll_bar_width; | |
5567 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 5568 | w->dedicated = p->dedicated; |
496e208e MR |
5569 | w->splits = p->splits; |
5570 | w->nest = p->nest; | |
5571 | w->window_parameters = p->window_parameters; | |
d834a2e9 | 5572 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5573 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5574 | |
5575 | /* Reinstall the saved buffer and pointers into it. */ | |
5576 | if (NILP (p->buffer)) | |
6198ccd0 | 5577 | /* An internal window. */ |
fd482be5 | 5578 | w->buffer = p->buffer; |
6198ccd0 MR |
5579 | else if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
5580 | /* If saved buffer is alive, install it. */ | |
5581 | { | |
5582 | w->buffer = p->buffer; | |
5583 | w->start_at_line_beg = p->start_at_line_beg; | |
5584 | set_marker_restricted (w->start, p->start, w->buffer); | |
5585 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
5586 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5587 | p->mark, w->buffer); | |
5588 | ||
5589 | /* As documented in Fcurrent_window_configuration, don't | |
5590 | restore the location of point in the buffer which was | |
5591 | current when the window configuration was recorded. */ | |
5592 | if (!EQ (p->buffer, new_current_buffer) | |
5593 | && XBUFFER (p->buffer) == current_buffer) | |
5594 | Fgoto_char (w->pointm); | |
5595 | } | |
5596 | else if (!NILP (w->buffer) && !NILP (BVAR (XBUFFER (w->buffer), name))) | |
5597 | /* Keep window's old buffer; make sure the markers are | |
5598 | real. */ | |
5599 | { | |
5600 | /* Set window markers at start of visible range. */ | |
5601 | if (XMARKER (w->start)->buffer == 0) | |
5602 | set_marker_restricted (w->start, make_number (0), | |
5603 | w->buffer); | |
5604 | if (XMARKER (w->pointm)->buffer == 0) | |
5605 | set_marker_restricted_both (w->pointm, w->buffer, | |
5606 | BUF_PT (XBUFFER (w->buffer)), | |
5607 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5608 | w->start_at_line_beg = Qt; | |
5609 | } | |
5610 | else if (STRINGP (auto_buffer_name = | |
5611 | Fwindow_parameter (window, Qauto_buffer_name)) | |
5612 | && SCHARS (auto_buffer_name) != 0 | |
5613 | && !NILP (w->buffer = Fget_buffer_create (auto_buffer_name))) | |
5614 | { | |
5615 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5616 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
5617 | w->start_at_line_beg = Qt; | |
5618 | } | |
fd482be5 | 5619 | else |
6198ccd0 | 5620 | /* Window has no live buffer, get one. */ |
fd482be5 | 5621 | { |
6198ccd0 MR |
5622 | /* Get the buffer via other_buffer_safely in order to |
5623 | avoid showing an unimportant buffer and, if necessary, to | |
5624 | recreate *scratch* in the course (part of Juanma's bs-show | |
5625 | scenario from March 2011). */ | |
5626 | w->buffer = other_buffer_safely (Fcurrent_buffer ()); | |
5627 | /* This will set the markers to beginning of visible | |
5628 | range. */ | |
5629 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5630 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
5631 | w->start_at_line_beg = Qt; | |
5632 | if (!NILP (w->dedicated)) | |
5633 | /* Record this window as dead. */ | |
5634 | dead_windows = Fcons (window, dead_windows); | |
5635 | /* Make sure window is no more dedicated. */ | |
5636 | w->dedicated = Qnil; | |
7ab12479 JB |
5637 | } |
5638 | } | |
9ace597f | 5639 | |
fd482be5 | 5640 | FRAME_ROOT_WINDOW (f) = data->root_window; |
a46c0153 RS |
5641 | /* Arrange *not* to restore point in the buffer that was |
5642 | current when the window configuration was saved. */ | |
243a5ce6 RS |
5643 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5644 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5645 | make_number (old_point), |
243a5ce6 | 5646 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5647 | |
6198ccd0 MR |
5648 | /* In the following call to `select-window', prevent "swapping out |
5649 | point" in the old selected window using the buffer that has | |
5650 | been restored into it. We already swapped out that point from | |
5651 | that window's old buffer. */ | |
e6b84b30 | 5652 | select_window (data->current_window, Qnil, 1); |
4b4deea2 | 5653 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5654 | = selected_window; |
7ab12479 | 5655 | |
db269683 | 5656 | if (NILP (data->focus_frame) |
017b2bad | 5657 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5658 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5659 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5660 | |
fd482be5 | 5661 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5662 | if (previous_frame_lines != FRAME_LINES (f) |
5663 | || previous_frame_cols != FRAME_COLS (f)) | |
5664 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5665 | 0, 0, 0); |
e3678b64 | 5666 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5667 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5668 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5669 | make_number (0)); | |
4314246f | 5670 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5671 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5672 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5673 | make_number (0)); | |
4314246f | 5674 | #endif |
217f2871 | 5675 | #endif |
d2b35234 | 5676 | |
5500c422 | 5677 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5678 | for (i = n = 0; i < n_leaf_windows; ++i) |
5679 | { | |
5680 | if (NILP (leaf_windows[i]->buffer)) | |
5681 | { | |
5682 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 5683 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
5684 | && NILP (leaf_windows[i]->vchild)); |
5685 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5686 | } |
5687 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5688 | ++n; | |
5689 | } | |
177c0ea7 | 5690 | |
5500c422 | 5691 | adjust_glyphs (f); |
d2b35234 | 5692 | UNBLOCK_INPUT; |
756b6edc | 5693 | |
6198ccd0 MR |
5694 | /* Scan dead buffer windows. */ |
5695 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5696 | { | |
5697 | window = XCAR (dead_windows); | |
5698 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5699 | delete_deletable_window (window); | |
5700 | } | |
5701 | ||
478292ed RS |
5702 | /* Fselect_window will have made f the selected frame, so we |
5703 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5704 | selected window too, but that doesn't make the call to | |
5705 | Fselect_window above totally superfluous; it still sets f's | |
5706 | selected window. */ | |
5707 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5708 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5709 | |
eeca6f6f | 5710 | run_window_configuration_change_hook (f); |
478292ed | 5711 | } |
bdc727bf JB |
5712 | |
5713 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5714 | Fset_buffer (new_current_buffer); |
bdc727bf | 5715 | |
478292ed | 5716 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5717 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5718 | |
3f8ab7bd | 5719 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5720 | } |
5721 | ||
562dd5e9 | 5722 | |
fa8a67e6 MR |
5723 | /* Delete all subwindows reachable via the next, vchild, and hchild |
5724 | slots of WINDOW. */ | |
fd482be5 | 5725 | void |
fa8a67e6 | 5726 | delete_all_subwindows (Lisp_Object window) |
7ab12479 | 5727 | { |
fa8a67e6 MR |
5728 | register struct window *w; |
5729 | ||
5730 | w = XWINDOW (window); | |
5731 | ||
265a9e55 | 5732 | if (!NILP (w->next)) |
fa8a67e6 MR |
5733 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
5734 | delete_all_subwindows (w->next); | |
605be8af | 5735 | |
949cf20f | 5736 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 5737 | |
fa8a67e6 MR |
5738 | if (!NILP (w->vchild)) |
5739 | { | |
5740 | delete_all_subwindows (w->vchild); | |
5741 | w->vchild = Qnil; | |
5742 | } | |
5743 | else if (!NILP (w->hchild)) | |
5744 | { | |
5745 | delete_all_subwindows (w->hchild); | |
5746 | w->hchild = Qnil; | |
5747 | } | |
5748 | else if (!NILP (w->buffer)) | |
5749 | { | |
5750 | unshow_buffer (w); | |
5751 | unchain_marker (XMARKER (w->pointm)); | |
5752 | unchain_marker (XMARKER (w->start)); | |
5753 | w->buffer = Qnil; | |
5754 | } | |
acf70840 GM |
5755 | |
5756 | Vwindow_list = Qnil; | |
7ab12479 JB |
5757 | } |
5758 | \f | |
5759 | static int | |
971de7fb | 5760 | count_windows (register struct window *window) |
7ab12479 JB |
5761 | { |
5762 | register int count = 1; | |
265a9e55 | 5763 | if (!NILP (window->next)) |
7ab12479 | 5764 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5765 | if (!NILP (window->vchild)) |
7ab12479 | 5766 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5767 | if (!NILP (window->hchild)) |
7ab12479 JB |
5768 | count += count_windows (XWINDOW (window->hchild)); |
5769 | return count; | |
5770 | } | |
5771 | ||
5500c422 | 5772 | |
177c0ea7 | 5773 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5774 | Value is last index + 1. */ |
5500c422 | 5775 | static int |
971de7fb | 5776 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5777 | { |
5778 | while (w) | |
5779 | { | |
5780 | if (!NILP (w->hchild)) | |
5781 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5782 | else if (!NILP (w->vchild)) | |
5783 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5784 | else |
5500c422 GM |
5785 | flat[i++] = w; |
5786 | ||
5787 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5788 | } | |
5789 | ||
5790 | return i; | |
5791 | } | |
5792 | ||
5793 | ||
5794 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5795 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5796 | can be returned. */ | |
5500c422 | 5797 | struct glyph * |
971de7fb | 5798 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5799 | { |
5800 | struct glyph_row *row; | |
5801 | struct glyph *glyph; | |
5802 | ||
5803 | if (w->phys_cursor.vpos >= 0 | |
5804 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5805 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5806 | row->enabled_p) | |
5807 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5808 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5809 | else | |
5810 | glyph = NULL; | |
5811 | ||
5812 | return glyph; | |
5813 | } | |
5814 | ||
5815 | ||
7ab12479 | 5816 | static int |
971de7fb | 5817 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
5818 | { |
5819 | register struct saved_window *p; | |
5820 | register struct window *w; | |
5821 | register Lisp_Object tem; | |
5822 | ||
265a9e55 | 5823 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5824 | { |
5825 | p = SAVED_WINDOW_N (vector, i); | |
5826 | w = XWINDOW (window); | |
5827 | ||
2a1893f4 | 5828 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
5829 | p->window = window; |
5830 | p->buffer = w->buffer; | |
949cf20f KS |
5831 | p->left_col = w->left_col; |
5832 | p->top_line = w->top_line; | |
5833 | p->total_cols = w->total_cols; | |
5834 | p->total_lines = w->total_lines; | |
496e208e MR |
5835 | p->normal_cols = w->normal_cols; |
5836 | p->normal_lines = w->normal_lines; | |
7ab12479 | 5837 | p->hscroll = w->hscroll; |
ea68264b | 5838 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5839 | p->display_table = w->display_table; |
949cf20f KS |
5840 | p->left_margin_cols = w->left_margin_cols; |
5841 | p->right_margin_cols = w->right_margin_cols; | |
5842 | p->left_fringe_width = w->left_fringe_width; | |
5843 | p->right_fringe_width = w->right_fringe_width; | |
5844 | p->fringes_outside_margins = w->fringes_outside_margins; | |
5845 | p->scroll_bar_width = w->scroll_bar_width; | |
5846 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 5847 | p->dedicated = w->dedicated; |
496e208e MR |
5848 | p->splits = w->splits; |
5849 | p->nest = w->nest; | |
496e208e | 5850 | p->window_parameters = w->window_parameters; |
265a9e55 | 5851 | if (!NILP (w->buffer)) |
7ab12479 JB |
5852 | { |
5853 | /* Save w's value of point in the window configuration. | |
5854 | If w is the selected window, then get the value of point | |
5855 | from the buffer; pointm is garbage in the selected window. */ | |
5856 | if (EQ (window, selected_window)) | |
5857 | { | |
5858 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5859 | set_marker_both (p->pointm, w->buffer, |
5860 | BUF_PT (XBUFFER (w->buffer)), | |
5861 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5862 | } |
5863 | else | |
eeb82665 | 5864 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5865 | |
eeb82665 | 5866 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5867 | p->start_at_line_beg = w->start_at_line_beg; |
5868 | ||
4b4deea2 | 5869 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 5870 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5871 | } |
5872 | else | |
5873 | { | |
5874 | p->pointm = Qnil; | |
5875 | p->start = Qnil; | |
5876 | p->mark = Qnil; | |
5877 | p->start_at_line_beg = Qnil; | |
5878 | } | |
5879 | ||
265a9e55 | 5880 | if (NILP (w->parent)) |
7ab12479 JB |
5881 | p->parent = Qnil; |
5882 | else | |
5883 | p->parent = XWINDOW (w->parent)->temslot; | |
5884 | ||
265a9e55 | 5885 | if (NILP (w->prev)) |
7ab12479 JB |
5886 | p->prev = Qnil; |
5887 | else | |
5888 | p->prev = XWINDOW (w->prev)->temslot; | |
5889 | ||
265a9e55 | 5890 | if (!NILP (w->vchild)) |
7ab12479 | 5891 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5892 | if (!NILP (w->hchild)) |
7ab12479 JB |
5893 | i = save_window_save (w->hchild, vector, i); |
5894 | } | |
5895 | ||
5896 | return i; | |
5897 | } | |
5898 | ||
a7ca3326 | 5899 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5900 | Scurrent_window_configuration, 0, 1, 0, |
5901 | doc: /* Return an object representing the current window configuration of FRAME. | |
5902 | If FRAME is nil or omitted, use the selected frame. | |
5903 | This describes the number of windows, their sizes and current buffers, | |
5904 | and for each displayed buffer, where display starts, and the positions of | |
5905 | point and mark. An exception is made for point in the current buffer: | |
5906 | its value is -not- saved. | |
5907 | This also records the currently selected frame, and FRAME's focus | |
5908 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 5909 | (Lisp_Object frame) |
7ab12479 JB |
5910 | { |
5911 | register Lisp_Object tem; | |
5912 | register int n_windows; | |
5913 | register struct save_window_data *data; | |
5914 | register int i; | |
44fa5b1e | 5915 | FRAME_PTR f; |
43bad991 | 5916 | |
44fa5b1e | 5917 | if (NILP (frame)) |
1ae1a37d | 5918 | frame = selected_frame; |
b7826503 | 5919 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 5920 | f = XFRAME (frame); |
7ab12479 | 5921 | |
44fa5b1e | 5922 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
5923 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
5924 | PVEC_WINDOW_CONFIGURATION); | |
5925 | ||
5926 | data->frame_cols = FRAME_COLS (f); | |
5927 | data->frame_lines = FRAME_LINES (f); | |
5928 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
5929 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 5930 | data->selected_frame = selected_frame; |
44fa5b1e | 5931 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5932 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 5933 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 5934 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 5935 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5936 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
5937 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5938 | data->saved_windows = tem; | |
5939 | for (i = 0; i < n_windows; i++) | |
5940 | XVECTOR (tem)->contents[i] | |
8a450f0a | 5941 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 5942 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5943 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5944 | return (tem); |
5945 | } | |
5500c422 GM |
5946 | \f |
5947 | /*********************************************************************** | |
5948 | Marginal Areas | |
5949 | ***********************************************************************/ | |
5950 | ||
5951 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5952 | 2, 3, 0, |
fdb82f93 | 5953 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
5954 | If WINDOW is nil, set margins of the currently selected window. |
5955 | Second arg LEFT-WIDTH specifies the number of character cells to | |
5956 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
5957 | does the same for the right marginal area. A nil width parameter | |
5958 | means no margin. */) | |
5842a27b | 5959 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
5960 | { |
5961 | struct window *w = decode_window (window); | |
5500c422 | 5962 | |
6b61353c KH |
5963 | /* Translate negative or zero widths to nil. |
5964 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 5965 | |
c10ce82e | 5966 | if (!NILP (left_width)) |
6b61353c | 5967 | { |
c10ce82e JB |
5968 | CHECK_NUMBER (left_width); |
5969 | if (XINT (left_width) <= 0) | |
5970 | left_width = Qnil; | |
6b61353c | 5971 | } |
5500c422 | 5972 | |
c10ce82e | 5973 | if (!NILP (right_width)) |
6b61353c | 5974 | { |
c10ce82e JB |
5975 | CHECK_NUMBER (right_width); |
5976 | if (XINT (right_width) <= 0) | |
5977 | right_width = Qnil; | |
6b61353c | 5978 | } |
5500c422 | 5979 | |
c10ce82e JB |
5980 | if (!EQ (w->left_margin_cols, left_width) |
5981 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 5982 | { |
c10ce82e JB |
5983 | w->left_margin_cols = left_width; |
5984 | w->right_margin_cols = right_width; | |
949cf20f KS |
5985 | |
5986 | adjust_window_margins (w); | |
5987 | ||
5988 | ++windows_or_buffers_changed; | |
5989 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5990 | } | |
5500c422 | 5991 | |
5500c422 GM |
5992 | return Qnil; |
5993 | } | |
5994 | ||
5995 | ||
5996 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5997 | 0, 1, 0, | |
fdb82f93 PJ |
5998 | doc: /* Get width of marginal areas of window WINDOW. |
5999 | If WINDOW is omitted or nil, use the currently selected window. | |
6000 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6001 | If a marginal area does not exist, its width will be returned | |
6002 | as nil. */) | |
5842a27b | 6003 | (Lisp_Object window) |
5500c422 GM |
6004 | { |
6005 | struct window *w = decode_window (window); | |
949cf20f KS |
6006 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6007 | } | |
6008 | ||
6009 | ||
6010 | \f | |
6011 | /*********************************************************************** | |
6012 | Fringes | |
6013 | ***********************************************************************/ | |
6014 | ||
a7ca3326 | 6015 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6016 | 2, 4, 0, |
6b61353c KH |
6017 | doc: /* Set the fringe widths of window WINDOW. |
6018 | If WINDOW is nil, set the fringe widths of the currently selected | |
6019 | window. | |
6020 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6021 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6022 | fringe width. If a fringe width arg is nil, that means to use the | |
6023 | frame's default fringe width. Default fringe widths can be set with | |
6024 | the command `set-fringe-style'. | |
6025 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6026 | outside of the display margins. By default, fringes are drawn between | |
6027 | display marginal areas and the text area. */) | |
5842a27b | 6028 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6029 | { |
6030 | struct window *w = decode_window (window); | |
6031 | ||
c10ce82e JB |
6032 | if (!NILP (left_width)) |
6033 | CHECK_NATNUM (left_width); | |
6034 | if (!NILP (right_width)) | |
6035 | CHECK_NATNUM (right_width); | |
5a857365 | 6036 | |
017e297e | 6037 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6038 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6039 | && (!EQ (w->left_fringe_width, left_width) | |
6040 | || !EQ (w->right_fringe_width, right_width) | |
6041 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6042 | { |
c10ce82e JB |
6043 | w->left_fringe_width = left_width; |
6044 | w->right_fringe_width = right_width; | |
949cf20f KS |
6045 | w->fringes_outside_margins = outside_margins; |
6046 | ||
6047 | adjust_window_margins (w); | |
6048 | ||
6049 | clear_glyph_matrix (w->current_matrix); | |
6050 | w->window_end_valid = Qnil; | |
6051 | ||
6052 | ++windows_or_buffers_changed; | |
6053 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6054 | } | |
6055 | ||
6056 | return Qnil; | |
6057 | } | |
6058 | ||
6059 | ||
6060 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6061 | 0, 1, 0, | |
6062 | doc: /* Get width of fringes of window WINDOW. | |
6063 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6064 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6065 | (Lisp_Object window) |
949cf20f KS |
6066 | { |
6067 | struct window *w = decode_window (window); | |
d46c6df5 | 6068 | |
949cf20f KS |
6069 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6070 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6071 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6072 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6073 | } |
6074 | ||
6075 | ||
6076 | \f | |
6077 | /*********************************************************************** | |
6078 | Scroll bars | |
6079 | ***********************************************************************/ | |
6080 | ||
a7ca3326 | 6081 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6082 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f KS |
6083 | doc: /* Set width and type of scroll bars of window WINDOW. |
6084 | If window is nil, set scroll bars of the currently selected window. | |
6085 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6086 | this is automatically adjusted to a multiple of the frame column width. | |
6087 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6088 | bar: left, right, or nil. | |
6b61353c | 6089 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6090 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6091 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6092 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6093 | { |
6094 | struct window *w = decode_window (window); | |
6095 | ||
6096 | if (!NILP (width)) | |
0f8fe9a2 SM |
6097 | { |
6098 | CHECK_NATNUM (width); | |
949cf20f | 6099 | |
0f8fe9a2 SM |
6100 | if (XINT (width) == 0) |
6101 | vertical_type = Qnil; | |
6102 | } | |
949cf20f | 6103 | |
413a79ad | 6104 | if (!(NILP (vertical_type) |
0cc1039f | 6105 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6106 | || EQ (vertical_type, Qright) |
6107 | || EQ (vertical_type, Qt))) | |
6108 | error ("Invalid type of vertical scroll bar"); | |
6109 | ||
949cf20f KS |
6110 | if (!EQ (w->scroll_bar_width, width) |
6111 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6112 | { | |
6113 | w->scroll_bar_width = width; | |
6114 | w->vertical_scroll_bar_type = vertical_type; | |
6115 | ||
6116 | adjust_window_margins (w); | |
6117 | ||
6118 | clear_glyph_matrix (w->current_matrix); | |
6119 | w->window_end_valid = Qnil; | |
6120 | ||
6121 | ++windows_or_buffers_changed; | |
6122 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6123 | } | |
6124 | ||
6125 | return Qnil; | |
6126 | } | |
6127 | ||
6128 | ||
6129 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6130 | 0, 1, 0, | |
6131 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6132 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6133 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6134 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6135 | value. */) | |
5842a27b | 6136 | (Lisp_Object window) |
949cf20f KS |
6137 | { |
6138 | struct window *w = decode_window (window); | |
6139 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6140 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6141 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6142 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6143 | Fcons (w->vertical_scroll_bar_type, | |
6144 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6145 | } |
6146 | ||
6147 | ||
7ab12479 | 6148 | \f |
5500c422 GM |
6149 | /*********************************************************************** |
6150 | Smooth scrolling | |
6151 | ***********************************************************************/ | |
6152 | ||
0cc1039f | 6153 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6154 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6155 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6156 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6157 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6158 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6159 | { |
47004952 | 6160 | Lisp_Object result; |
5500c422 GM |
6161 | struct frame *f; |
6162 | struct window *w; | |
177c0ea7 | 6163 | |
5500c422 GM |
6164 | if (NILP (window)) |
6165 | window = selected_window; | |
47004952 | 6166 | else |
b7826503 | 6167 | CHECK_WINDOW (window); |
5500c422 GM |
6168 | w = XWINDOW (window); |
6169 | f = XFRAME (w->frame); | |
177c0ea7 | 6170 | |
5500c422 | 6171 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6172 | result = (NILP (pixels_p) |
6173 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6174 | : make_number (-w->vscroll)); | |
5500c422 | 6175 | else |
47004952 GM |
6176 | result = make_number (0); |
6177 | return result; | |
5500c422 GM |
6178 | } |
6179 | ||
6180 | ||
6181 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6182 | 2, 3, 0, |
fdb82f93 | 6183 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6184 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6185 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6186 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6187 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6188 | corresponds to an integral number of pixels. The return value is the | |
6189 | result of this rounding. | |
6190 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6191 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6192 | { |
6193 | struct window *w; | |
6194 | struct frame *f; | |
177c0ea7 | 6195 | |
5500c422 GM |
6196 | if (NILP (window)) |
6197 | window = selected_window; | |
47004952 | 6198 | else |
b7826503 PJ |
6199 | CHECK_WINDOW (window); |
6200 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6201 | |
5500c422 GM |
6202 | w = XWINDOW (window); |
6203 | f = XFRAME (w->frame); | |
6204 | ||
6205 | if (FRAME_WINDOW_P (f)) | |
6206 | { | |
6207 | int old_dy = w->vscroll; | |
177c0ea7 | 6208 | |
0cc1039f KS |
6209 | w->vscroll = - (NILP (pixels_p) |
6210 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6211 | : XFLOATINT (vscroll)); | |
47004952 | 6212 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6213 | |
e56263e5 KS |
6214 | if (w->vscroll != old_dy) |
6215 | { | |
6216 | /* Adjust glyph matrix of the frame if the virtual display | |
6217 | area becomes larger than before. */ | |
6218 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6219 | adjust_glyphs (f); | |
177c0ea7 | 6220 | |
e56263e5 KS |
6221 | /* Prevent redisplay shortcuts. */ |
6222 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6223 | } | |
5500c422 | 6224 | } |
177c0ea7 | 6225 | |
0cc1039f | 6226 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6227 | } |
177c0ea7 | 6228 | |
7bbb5782 GM |
6229 | \f |
6230 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6231 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6232 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6233 | |
2f7c71a1 AS |
6234 | static void |
6235 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6236 | void *user_data) | |
7bbb5782 | 6237 | { |
56f2de10 | 6238 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6239 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6240 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6241 | } |
6242 | ||
6243 | ||
6244 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6245 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6246 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6247 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6248 | |
67492200 | 6249 | static int |
971de7fb | 6250 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6251 | { |
67492200 | 6252 | int cont; |
177c0ea7 | 6253 | |
67492200 | 6254 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6255 | { |
6256 | if (!NILP (w->hchild)) | |
f95464e4 | 6257 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6258 | else if (!NILP (w->vchild)) |
f95464e4 | 6259 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6260 | else |
0f532a9a | 6261 | cont = fn (w, user_data); |
177c0ea7 | 6262 | |
7bbb5782 GM |
6263 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6264 | } | |
67492200 GM |
6265 | |
6266 | return cont; | |
7bbb5782 GM |
6267 | } |
6268 | ||
6269 | ||
6d194a45 | 6270 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6271 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6272 | the window start. */ |
6273 | ||
67492200 | 6274 | static int |
971de7fb | 6275 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6276 | { |
08c1d235 SM |
6277 | if (MINI_WINDOW_P (w) |
6278 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6279 | && (w == XWINDOW (selected_window) | |
6280 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6281 | && ! NILP (Vminibuf_scroll_window) | |
6282 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6283 | freeze_p = NULL; |
177c0ea7 | 6284 | |
f95464e4 | 6285 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6286 | return 1; |
7bbb5782 GM |
6287 | } |
6288 | ||
6289 | ||
6290 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6291 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6292 | means freeze the window start. */ | |
6293 | ||
6294 | void | |
971de7fb | 6295 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6296 | { |
cbccabec | 6297 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6298 | } |
5500c422 GM |
6299 | |
6300 | \f | |
6301 | /*********************************************************************** | |
6302 | Initialization | |
6303 | ***********************************************************************/ | |
6304 | ||
6198ccd0 MR |
6305 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6306 | describe the same state of affairs. This is used by Fequal. | |
6307 | ||
6308 | ignore_positions non-zero means ignore non-matching scroll positions | |
6309 | and the like. | |
6310 | ||
6311 | This ignores a couple of things like the dedicatedness status of | |
6312 | window, splits, nest and the like. This might have to be fixed. */ | |
cbff28e8 RS |
6313 | |
6314 | int | |
6198ccd0 | 6315 | compare_window_configurations (Lisp_Object configuration1, Lisp_Object configuration2, int ignore_positions) |
cbff28e8 RS |
6316 | { |
6317 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6318 | struct Lisp_Vector *sws1, *sws2; |
cbff28e8 RS |
6319 | int i; |
6320 | ||
6198ccd0 MR |
6321 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6322 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6323 | ||
6324 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6325 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6326 | sws1 = XVECTOR (d1->saved_windows); | |
6327 | sws2 = XVECTOR (d2->saved_windows); | |
6328 | ||
6329 | /* Frame settings must match. */ | |
6330 | if (d1->frame_cols != d2->frame_cols | |
6331 | || d1->frame_lines != d2->frame_lines | |
6332 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6333 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6334 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6335 | || (!ignore_positions | |
6336 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6337 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6338 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6339 | /* Verify that the two configurations have the same number of windows. */ | |
6340 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6341 | return 0; |
cbff28e8 | 6342 | |
6198ccd0 | 6343 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6344 | { |
6198ccd0 | 6345 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6346 | |
6198ccd0 MR |
6347 | sw1 = SAVED_WINDOW_N (sws1, i); |
6348 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6349 | ||
6350 | if ( | |
6351 | /* The "current" windows in the two configurations must | |
6352 | correspond to each other. */ | |
6353 | EQ (d1->current_window, sw1->window) | |
6354 | != EQ (d2->current_window, sw2->window) | |
6355 | /* Windows' buffers must match. */ | |
6356 | || !EQ (sw1->buffer, sw2->buffer) | |
6357 | || !EQ (sw1->left_col, sw2->left_col) | |
6358 | || !EQ (sw1->top_line, sw2->top_line) | |
6359 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6360 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6361 | || !EQ (sw1->display_table, sw2->display_table) | |
6362 | /* The next two disjuncts check the window structure for | |
6363 | equality. */ | |
6364 | || !EQ (sw1->parent, sw2->parent) | |
6365 | || !EQ (sw1->prev, sw2->prev) | |
6366 | || (!ignore_positions | |
6367 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6368 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6369 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6370 | || NILP (Fequal (sw1->start, sw2->start)) | |
6371 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6372 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6373 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6374 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6375 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6376 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6377 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6378 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6379 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6380 | return 0; |
cbff28e8 RS |
6381 | } |
6382 | ||
6383 | return 1; | |
6384 | } | |
2f8274be RS |
6385 | |
6386 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6387 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6388 | doc: /* Compare two window configurations as regards the structure of windows. |
6389 | This function ignores details such as the values of point and mark | |
6390 | and scrolling positions. */) | |
5842a27b | 6391 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6392 | { |
6393 | if (compare_window_configurations (x, y, 1)) | |
6394 | return Qt; | |
6395 | return Qnil; | |
6396 | } | |
cbff28e8 | 6397 | \f |
dfcf069d | 6398 | void |
971de7fb | 6399 | init_window_once (void) |
7ab12479 | 6400 | { |
3224dac1 | 6401 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6402 | XSETFRAME (selected_frame, f); |
6403 | Vterminal_frame = selected_frame; | |
6404 | minibuf_window = f->minibuffer_window; | |
6405 | selected_window = f->selected_window; | |
6406 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6407 | |
6408 | window_initialized = 1; | |
7ab12479 JB |
6409 | } |
6410 | ||
67492200 | 6411 | void |
971de7fb | 6412 | init_window (void) |
67492200 GM |
6413 | { |
6414 | Vwindow_list = Qnil; | |
6415 | } | |
6416 | ||
dfcf069d | 6417 | void |
971de7fb | 6418 | syms_of_window (void) |
7ab12479 | 6419 | { |
cd3520a4 JB |
6420 | DEFSYM (Qscroll_up, "scroll-up"); |
6421 | DEFSYM (Qscroll_down, "scroll-down"); | |
6422 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6423 | |
6424 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6425 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6426 | ||
cd3520a4 JB |
6427 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6428 | DEFSYM (Qwindowp, "windowp"); | |
6429 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6430 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
6431 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); | |
6432 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6433 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6434 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6435 | DEFSYM (Qsafe, "safe"); |
6436 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6437 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6438 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6439 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
6440 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); | |
6441 | DEFSYM (Qabove, "above"); | |
6442 | DEFSYM (Qbelow, "below"); | |
6443 | DEFSYM (Qauto_buffer_name, "auto-buffer-name"); | |
b9e809c2 | 6444 | |
67492200 | 6445 | staticpro (&Vwindow_list); |
8bfb170b KS |
6446 | |
6447 | minibuf_selected_window = Qnil; | |
3dbab091 | 6448 | staticpro (&minibuf_selected_window); |
67492200 | 6449 | |
c876b227 | 6450 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6451 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6452 | window_scroll_preserve_hpos = -1; |
6453 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6454 | |
29208e82 | 6455 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6456 | doc: /* Non-nil means call as function to display a help buffer. |
6457 | The function is called with one argument, the buffer to be displayed. | |
6458 | Used by `with-output-to-temp-buffer'. | |
6459 | If this function is used, then it must do the entire job of showing | |
6460 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
6461 | Vtemp_buffer_show_function = Qnil; |
6462 | ||
e10ac9f1 MR |
6463 | DEFVAR_LISP ("temp-buffer-show-specifiers", Vtemp_buffer_show_specifiers, |
6464 | doc: /* Buffer display specifiers used by `with-output-to-temp-buffer'. | |
6465 | These specifiers are passed by `with-output-to-temp-buffer' as second | |
6466 | argument to `display-buffer'. Applications should only let-bind this | |
6467 | around a call to `with-output-to-temp-buffer'. | |
6468 | ||
6469 | For a description of buffer display specifiers see the variable | |
6470 | `display-buffer-alist'. */); | |
6471 | Vtemp_buffer_show_specifiers = Qnil; | |
6472 | ||
29208e82 | 6473 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6474 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6475 | Vminibuf_scroll_window = Qnil; |
6476 | ||
29208e82 | 6477 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6478 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6479 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6480 | is displayed in the `mode-line' face. */); | |
6481 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6482 | |
29208e82 | 6483 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6484 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6485 | Vother_window_scroll_buffer = Qnil; |
6486 | ||
29208e82 | 6487 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6488 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6489 | auto_window_vscroll_p = 1; |
6490 | ||
29208e82 | 6491 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6492 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6493 | next_screen_context_lines = 2; |
6494 | ||
5500c422 | 6495 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6496 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6497 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6498 | A value of nil means point does not keep its screen position except |
6499 | at the scroll margin or window boundary respectively. | |
6500 | A value of t means point keeps its screen position if the scroll | |
6501 | command moved it vertically out of the window, e.g. when scrolling | |
6502 | by full screens. | |
9013a7f8 | 6503 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6504 | Scroll commands should have the `scroll-command' property |
6505 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6506 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6507 | |
29208e82 | 6508 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6509 | doc: /* Type of marker to use for `window-point'. */); |
6510 | Vwindow_point_insertion_type = Qnil; | |
6511 | ||
543f5fb1 | 6512 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6513 | Vwindow_configuration_change_hook, |
fdb82f93 | 6514 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6515 | The buffer-local part is run once per window, with the relevant window |
6516 | selected; while the global part is run only once for the modified frame, | |
6517 | with the relevant frame selected. */); | |
543f5fb1 RS |
6518 | Vwindow_configuration_change_hook = Qnil; |
6519 | ||
29208e82 | 6520 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
666e158e | 6521 | doc: /* If non-nil, then the `recenter' command with a nil argument |
6e6e5760 | 6522 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
6523 | frame to be redrawn only if it is a tty frame. */); |
6524 | Vrecenter_redisplay = Qtty; | |
6525 | ||
1a13852e MR |
6526 | DEFVAR_LISP ("window-splits", Vwindow_splits, |
6527 | doc: /* Non-nil means splitting windows is handled specially. | |
6528 | If this variable is nil, splitting a window gets the entire screen space | |
6529 | for displaying the new window from the window to split. If this | |
6530 | variable is non-nil, splitting a window may resize all windows in the | |
6531 | same combination. This also allows to split a window that is otherwise | |
6532 | too small or of fixed size. | |
6533 | ||
6534 | The value of this variable is also assigned to the split status of the | |
6535 | new window and, provided the old and new window form a new combination, | |
6536 | to the window that was split as well. The split status of a window can | |
6537 | be retrieved with the function `window-splits' and altered by the | |
6538 | function `set-window-splits'. | |
6539 | ||
6540 | If the value of the variable `window-nest' is non-nil, the space for the | |
6541 | new window is exclusively taken from the window that shall be split, but | |
6542 | the split status of the window that is split as well as that of the new | |
6543 | window are still set to the value of this variable. */); | |
6544 | Vwindow_splits = Qnil; | |
6545 | ||
6546 | DEFVAR_LISP ("window-nest", Vwindow_nest, | |
6547 | doc: /* Non-nil means splitting a window makes a new parent window. | |
6548 | If this variable is nil, splitting a window will create a new parent | |
6549 | window only if the window has no parent window or the window shall | |
6550 | become a combination orthogonal to the one it it is part of. | |
6551 | ||
6552 | If this variable is non-nil, splitting a window always creates a new | |
6553 | parent window. If all splits behave this way, each frame's window tree | |
6554 | is a binary tree and every window but the frame's root window has | |
6555 | exactly one sibling. | |
6556 | ||
6557 | The value of this variable is also assigned to the nest status of the | |
6558 | new parent window. The nest status of a window can be retrieved via the | |
6559 | function `window-nest' and altered by the function `set-window-nest'. */); | |
6560 | Vwindow_nest = Qnil; | |
666e158e | 6561 | |
7ab12479 JB |
6562 | defsubr (&Sselected_window); |
6563 | defsubr (&Sminibuffer_window); | |
6564 | defsubr (&Swindow_minibuffer_p); | |
6565 | defsubr (&Swindowp); | |
806b4d9b | 6566 | defsubr (&Swindow_live_p); |
727e958e MR |
6567 | defsubr (&Swindow_frame); |
6568 | defsubr (&Sframe_root_window); | |
6569 | defsubr (&Sframe_first_window); | |
6570 | defsubr (&Sframe_selected_window); | |
6571 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6572 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6573 | defsubr (&Swindow_line_height); |
7ab12479 | 6574 | defsubr (&Swindow_buffer); |
bf60a96b | 6575 | defsubr (&Swindow_parent); |
d68443dc MR |
6576 | defsubr (&Swindow_top_child); |
6577 | defsubr (&Swindow_left_child); | |
6578 | defsubr (&Swindow_next_sibling); | |
6579 | defsubr (&Swindow_prev_sibling); | |
496e208e MR |
6580 | defsubr (&Swindow_splits); |
6581 | defsubr (&Sset_window_splits); | |
6582 | defsubr (&Swindow_nest); | |
6583 | defsubr (&Sset_window_nest); | |
abde8f8c MR |
6584 | defsubr (&Swindow_use_time); |
6585 | defsubr (&Swindow_top_line); | |
6586 | defsubr (&Swindow_left_column); | |
6587 | defsubr (&Swindow_total_size); | |
496e208e MR |
6588 | defsubr (&Swindow_normal_size); |
6589 | defsubr (&Swindow_new_total); | |
6590 | defsubr (&Swindow_new_normal); | |
6591 | defsubr (&Sset_window_new_total); | |
6592 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6593 | defsubr (&Swindow_resize_apply); |
abde8f8c | 6594 | defsubr (&Swindow_body_size); |
7ab12479 JB |
6595 | defsubr (&Swindow_hscroll); |
6596 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6597 | defsubr (&Swindow_redisplay_end_trigger); |
6598 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6599 | defsubr (&Swindow_edges); |
c99a9eb3 | 6600 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6601 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6602 | defsubr (&Swindow_inside_edges); |
6603 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6604 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6605 | defsubr (&Scoordinates_in_window_p); |
6606 | defsubr (&Swindow_at); | |
7ab12479 JB |
6607 | defsubr (&Swindow_point); |
6608 | defsubr (&Swindow_start); | |
6609 | defsubr (&Swindow_end); | |
6610 | defsubr (&Sset_window_point); | |
6611 | defsubr (&Sset_window_start); | |
6612 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6613 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6614 | defsubr (&Swindow_display_table); |
6615 | defsubr (&Sset_window_display_table); | |
6616 | defsubr (&Snext_window); | |
6617 | defsubr (&Sprevious_window); | |
7ab12479 | 6618 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6619 | defsubr (&Sdelete_other_windows_internal); |
6620 | defsubr (&Sdelete_window_internal); | |
6621 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6622 | defsubr (&Sset_window_buffer); |
1a13852e | 6623 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6624 | defsubr (&Sselect_window); |
6b61353c | 6625 | defsubr (&Sforce_window_update); |
3e21b6a7 | 6626 | defsubr (&Stemp_output_buffer_show); |
1a13852e | 6627 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6628 | defsubr (&Sscroll_up); |
6629 | defsubr (&Sscroll_down); | |
6630 | defsubr (&Sscroll_left); | |
6631 | defsubr (&Sscroll_right); | |
ccd0664b | 6632 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6633 | defsubr (&Sscroll_other_window); |
fa832261 | 6634 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6635 | defsubr (&Srecenter); |
81fe0836 | 6636 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6637 | defsubr (&Smove_to_window_line); |
6638 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6639 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6640 | defsubr (&Sset_window_configuration); |
6641 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6642 | defsubr (&Sset_window_margins); |
6643 | defsubr (&Swindow_margins); | |
949cf20f KS |
6644 | defsubr (&Sset_window_fringes); |
6645 | defsubr (&Swindow_fringes); | |
6646 | defsubr (&Sset_window_scroll_bars); | |
6647 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6648 | defsubr (&Swindow_vscroll); |
6649 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6650 | defsubr (&Scompare_window_configurations); |
67492200 | 6651 | defsubr (&Swindow_list); |
abde8f8c | 6652 | defsubr (&Swindow_list_1); |
496e208e MR |
6653 | defsubr (&Swindow_prev_buffers); |
6654 | defsubr (&Sset_window_prev_buffers); | |
6655 | defsubr (&Swindow_next_buffers); | |
6656 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6657 | defsubr (&Swindow_parameters); |
6658 | defsubr (&Swindow_parameter); | |
6659 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6660 | } |
6661 | ||
dfcf069d | 6662 | void |
971de7fb | 6663 | keys_of_window (void) |
7ab12479 | 6664 | { |
7ab12479 JB |
6665 | initial_define_key (control_x_map, '<', "scroll-left"); |
6666 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6667 | ||
32129746 | 6668 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6669 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6670 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6671 | } |