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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 | |
955cbe7b PE |
53 | Lisp_Object Qwindowp, Qwindow_live_p; |
54 | static Lisp_Object Qwindow_configuration_p; | |
55 | static Lisp_Object Qdisplay_buffer; | |
56 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; | |
57 | static Lisp_Object Qwindow_size_fixed; | |
87478b52 | 58 | |
f57e2426 J |
59 | static int displayed_window_lines (struct window *); |
60 | static struct window *decode_window (Lisp_Object); | |
61 | static int count_windows (struct window *); | |
62 | static int get_leaf_windows (struct window *, struct window **, int); | |
63 | static void window_scroll (Lisp_Object, int, int, int); | |
64 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); | |
65 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
66 | static int window_min_size_1 (struct window *, int, int); | |
67 | static int window_min_size_2 (struct window *, int, int); | |
68 | static int window_min_size (struct window *, int, int, int, int *); | |
69 | static void size_window (Lisp_Object, int, int, int, int, int); | |
70 | static int freeze_window_start (struct window *, void *); | |
71 | static int window_fixed_size_p (struct window *, int, int); | |
72 | static void enlarge_window (Lisp_Object, int, int); | |
73 | static Lisp_Object window_list (void); | |
74 | static int add_window_to_list (struct window *, void *); | |
75 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
76 | Lisp_Object); | |
77 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
78 | Lisp_Object, int); | |
79 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
80 | Lisp_Object *); | |
2f7c71a1 | 81 | static void foreach_window (struct frame *, |
f95464e4 | 82 | int (* fn) (struct window *, void *), |
2f7c71a1 | 83 | void *); |
f57e2426 J |
84 | static int foreach_window_1 (struct window *, |
85 | int (* fn) (struct window *, void *), | |
86 | void *); | |
87 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
7c82f3e2 | 88 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 89 | |
7ab12479 JB |
90 | /* This is the window in which the terminal's cursor should |
91 | be left when nothing is being done with it. This must | |
92 | always be a leaf window, and its buffer is selected by | |
93 | the top level editing loop at the end of each command. | |
94 | ||
95 | This value is always the same as | |
44fa5b1e | 96 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
97 | Lisp_Object selected_window; |
98 | ||
67492200 GM |
99 | /* A list of all windows for use by next_window and Fwindow_list. |
100 | Functions creating or deleting windows should invalidate this cache | |
101 | by setting it to nil. */ | |
67492200 GM |
102 | Lisp_Object Vwindow_list; |
103 | ||
5500c422 GM |
104 | /* The mini-buffer window of the selected frame. |
105 | Note that you cannot test for mini-bufferness of an arbitrary window | |
106 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
107 | the selected window. */ |
108 | Lisp_Object minibuf_window; | |
109 | ||
3f49fddc KS |
110 | /* Non-nil means it is the window whose mode line should be |
111 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 112 | Lisp_Object minibuf_selected_window; |
3f49fddc | 113 | |
a58ec57d | 114 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 115 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 116 | |
7ab12479 JB |
117 | /* Incremented for each window created. */ |
118 | static int sequence_number; | |
119 | ||
5b03d3c0 RS |
120 | /* Nonzero after init_window_once has finished. */ |
121 | static int window_initialized; | |
122 | ||
543f5fb1 | 123 | /* Hook to run when window config changes. */ |
eeca6f6f | 124 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 125 | |
f230ecc9 | 126 | /* Incremented by 1 whenever a window is deleted. */ |
2b96acb7 | 127 | static int window_deletion_count; |
0d384044 | 128 | |
66d43aea | 129 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 130 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 131 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 132 | |
c876b227 | 133 | /* Same for window_scroll_line_based. */ |
c876b227 SM |
134 | static int window_scroll_preserve_hpos; |
135 | static int window_scroll_preserve_vpos; | |
f230ecc9 MR |
136 | \f |
137 | static struct window * | |
138 | decode_window (register Lisp_Object window) | |
139 | { | |
140 | if (NILP (window)) | |
141 | return XWINDOW (selected_window); | |
c876b227 | 142 | |
f230ecc9 MR |
143 | CHECK_LIVE_WINDOW (window); |
144 | return XWINDOW (window); | |
145 | } | |
146 | ||
147 | static struct window * | |
148 | decode_any_window (register Lisp_Object window) | |
149 | { | |
150 | if (NILP (window)) | |
151 | return XWINDOW (selected_window); | |
152 | ||
153 | CHECK_WINDOW (window); | |
154 | return XWINDOW (window); | |
155 | } | |
666e158e | 156 | |
7ab12479 | 157 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 158 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 159 | (Lisp_Object object) |
7ab12479 | 160 | { |
413430c5 | 161 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
162 | } |
163 | ||
806b4d9b | 164 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 MR |
165 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
166 | A live window is a window that displays a buffer. */) | |
5842a27b | 167 | (Lisp_Object object) |
605be8af | 168 | { |
9e571f49 | 169 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 170 | } |
727e958e MR |
171 | \f |
172 | /* Frames and windows. */ | |
173 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
174 | doc: /* Return the frame that window WINDOW is on. | |
175 | WINDOW can be any window and defaults to the selected one. */) | |
176 | (Lisp_Object window) | |
177 | { | |
178 | return decode_any_window (window)->frame; | |
179 | } | |
180 | ||
181 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
182 | doc: /* Return the root window of FRAME_OR_WINDOW. | |
183 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
184 | Else if FRAME_OR_WINDOW denotes any window, return the root window of | |
185 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
186 | the root window of that frame. */) | |
187 | (Lisp_Object frame_or_window) | |
188 | { | |
189 | Lisp_Object window; | |
190 | ||
191 | if (NILP (frame_or_window)) | |
192 | window = SELECTED_FRAME ()->root_window; | |
193 | else if (WINDOWP (frame_or_window)) | |
194 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
195 | else | |
196 | { | |
197 | CHECK_LIVE_FRAME (frame_or_window); | |
198 | window = XFRAME (frame_or_window)->root_window; | |
199 | } | |
200 | ||
201 | return window; | |
202 | } | |
203 | ||
204 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
205 | doc: /* Return the window used now for minibuffers. | |
206 | If the optional argument FRAME is specified, return the minibuffer window | |
207 | used by that frame. */) | |
208 | (Lisp_Object frame) | |
209 | { | |
210 | if (NILP (frame)) | |
211 | frame = selected_frame; | |
212 | CHECK_LIVE_FRAME (frame); | |
213 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
214 | } | |
215 | ||
216 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
217 | Swindow_minibuffer_p, 0, 1, 0, | |
218 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
219 | WINDOW can be any window and defaults to the selected one. */) | |
220 | (Lisp_Object window) | |
221 | { | |
222 | return MINI_WINDOW_P (decode_any_window (window)) ? Qt : Qnil; | |
223 | } | |
224 | ||
225 | /* Don't move this to window.el - this must be a safe routine. */ | |
226 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
227 | doc: /* Return the topmost, leftmost live window on FRAME_OR_WINDOW. | |
228 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
229 | Else if FRAME_OR_WINDOW denotes any window, return the first window of | |
230 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
231 | the first window of that frame. */) | |
232 | (Lisp_Object frame_or_window) | |
233 | { | |
234 | Lisp_Object window; | |
235 | ||
236 | if (NILP (frame_or_window)) | |
237 | window = SELECTED_FRAME ()->root_window; | |
238 | else if (WINDOWP (frame_or_window)) | |
239 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
240 | else | |
241 | { | |
242 | CHECK_LIVE_FRAME (frame_or_window); | |
243 | window = XFRAME (frame_or_window)->root_window; | |
244 | } | |
245 | ||
246 | while (NILP (XWINDOW (window)->buffer)) | |
247 | { | |
248 | if (! NILP (XWINDOW (window)->hchild)) | |
249 | window = XWINDOW (window)->hchild; | |
250 | else if (! NILP (XWINDOW (window)->vchild)) | |
251 | window = XWINDOW (window)->vchild; | |
252 | else | |
253 | abort (); | |
254 | } | |
255 | ||
256 | return window; | |
257 | } | |
258 | ||
259 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
260 | Sframe_selected_window, 0, 1, 0, | |
261 | doc: /* Return the selected window of FRAME_OR_WINDOW. | |
262 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
263 | Else if FRAME_OR_WINDOW denotes any window, return the selected window | |
264 | of that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
265 | the selected window of that frame. */) | |
266 | (Lisp_Object frame_or_window) | |
267 | { | |
268 | Lisp_Object window; | |
269 | ||
270 | if (NILP (frame_or_window)) | |
271 | window = SELECTED_FRAME ()->selected_window; | |
272 | else if (WINDOWP (frame_or_window)) | |
273 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; | |
274 | else | |
275 | { | |
276 | CHECK_LIVE_FRAME (frame_or_window); | |
277 | window = XFRAME (frame_or_window)->selected_window; | |
278 | } | |
279 | ||
280 | return window; | |
281 | } | |
282 | ||
283 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
284 | Sset_frame_selected_window, 2, 3, 0, | |
285 | doc: /* Set selected window of FRAME to WINDOW. | |
286 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
287 | is the selected frame, this makes WINDOW the selected window. Optional | |
288 | argument NORECORD non-nil means to neither change the order of recently | |
289 | selected windows nor the buffer list. WINDOW must denote a live window. | |
290 | Return WINDOW. */) | |
291 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
292 | { | |
293 | if (NILP (frame)) | |
294 | frame = selected_frame; | |
295 | ||
296 | CHECK_LIVE_FRAME (frame); | |
297 | CHECK_LIVE_WINDOW (window); | |
298 | ||
299 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
300 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
301 | ||
302 | if (EQ (frame, selected_frame)) | |
303 | return Fselect_window (window, norecord); | |
304 | else | |
305 | return XFRAME (frame)->selected_window = window; | |
306 | } | |
307 | ||
308 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
309 | doc: /* Return the selected window. | |
310 | The selected window is the window in which the standard cursor for | |
311 | selected windows appears and to which many commands apply. */) | |
312 | (void) | |
313 | { | |
314 | return selected_window; | |
315 | } | |
316 | ||
317 | /* If select_window is called with inhibit_point_swap non-zero it will | |
318 | not store point of the old selected window's buffer back into that | |
319 | window's pointm slot. This is needed by Fset_window_configuration to | |
320 | avoid that the display routine is called with selected_window set to | |
321 | Qnil causing a subsequent crash. */ | |
322 | static Lisp_Object | |
323 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
324 | { | |
325 | register struct window *w; | |
326 | register struct window *ow; | |
327 | struct frame *sf; | |
328 | ||
329 | CHECK_LIVE_WINDOW (window); | |
330 | ||
331 | w = XWINDOW (window); | |
332 | w->frozen_window_start_p = 0; | |
333 | ||
334 | if (NILP (norecord)) | |
335 | { | |
336 | ++window_select_count; | |
337 | XSETFASTINT (w->use_time, window_select_count); | |
338 | record_buffer (w->buffer); | |
339 | } | |
340 | ||
341 | if (EQ (window, selected_window) && !inhibit_point_swap) | |
342 | return window; | |
343 | ||
344 | sf = SELECTED_FRAME (); | |
345 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
346 | { | |
347 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
348 | /* Use this rather than Fhandle_switch_frame | |
349 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
350 | move around in the state where a minibuffer in a separate | |
351 | frame is active. */ | |
352 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
353 | /* Fselect_frame called us back so we've done all the work already. */ | |
354 | eassert (EQ (window, selected_window)); | |
355 | return window; | |
356 | } | |
357 | else | |
358 | sf->selected_window = window; | |
359 | ||
360 | /* Store the current buffer's actual point into the | |
361 | old selected window. It belongs to that window, | |
362 | and when the window is not selected, must be in the window. */ | |
363 | if (!inhibit_point_swap) | |
364 | { | |
365 | ow = XWINDOW (selected_window); | |
366 | if (! NILP (ow->buffer)) | |
367 | set_marker_both (ow->pointm, ow->buffer, | |
368 | BUF_PT (XBUFFER (ow->buffer)), | |
369 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
370 | } | |
371 | ||
372 | selected_window = window; | |
373 | ||
374 | Fset_buffer (w->buffer); | |
375 | ||
376 | BVAR (XBUFFER (w->buffer), last_selected_window) = window; | |
377 | ||
378 | /* Go to the point recorded in the window. | |
379 | This is important when the buffer is in more | |
380 | than one window. It also matters when | |
381 | redisplay_window has altered point after scrolling, | |
382 | because it makes the change only in the window. */ | |
383 | { | |
384 | register EMACS_INT new_point = marker_position (w->pointm); | |
385 | if (new_point < BEGV) | |
386 | SET_PT (BEGV); | |
387 | else if (new_point > ZV) | |
388 | SET_PT (ZV); | |
389 | else | |
390 | SET_PT (new_point); | |
391 | } | |
392 | ||
393 | windows_or_buffers_changed++; | |
394 | return window; | |
395 | } | |
396 | ||
397 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
398 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
399 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
400 | window. Return WINDOW. | |
401 | ||
402 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
403 | front of the buffer list and do not make this window the most recently | |
404 | selected one. | |
605be8af | 405 | |
727e958e MR |
406 | Note that the main editor command loop sets the current buffer to the |
407 | buffer of the selected window before each command. */) | |
408 | (register Lisp_Object window, Lisp_Object norecord) | |
409 | { | |
410 | return select_window (window, norecord, 0); | |
411 | } | |
412 | \f | |
bf60a96b MR |
413 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
414 | doc: /* Return the buffer that WINDOW is displaying. | |
415 | WINDOW can be any window and defaults to the selected one. | |
416 | If WINDOW is an internal window return nil. */) | |
417 | (Lisp_Object window) | |
418 | { | |
419 | return decode_any_window (window)->buffer; | |
420 | } | |
421 | ||
422 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
423 | doc: /* Return WINDOW's parent window. | |
424 | WINDOW can be any window and defaults to the selected one. | |
425 | Return nil if WINDOW has no parent. */) | |
426 | (Lisp_Object window) | |
427 | { | |
428 | return decode_any_window (window)->parent; | |
429 | } | |
430 | ||
431 | DEFUN ("window-vchild", Fwindow_vchild, Swindow_vchild, 0, 1, 0, | |
432 | doc: /* Return WINDOW's first vertical child window. | |
433 | WINDOW can be any window and defaults to the selected one. | |
434 | Return nil if WINDOW has no vertical child. */) | |
435 | (Lisp_Object window) | |
436 | { | |
437 | return decode_any_window (window)->vchild; | |
438 | } | |
439 | ||
440 | DEFUN ("window-hchild", Fwindow_hchild, Swindow_hchild, 0, 1, 0, | |
441 | doc: /* Return WINDOW's first horizontal child window. | |
442 | WINDOW can be any window and defaults to the selected one. | |
443 | Return nil if WINDOW has no horizontal child. */) | |
444 | (Lisp_Object window) | |
445 | { | |
446 | return decode_any_window (window)->hchild; | |
447 | } | |
448 | ||
449 | DEFUN ("window-next", Fwindow_next, Swindow_next, 0, 1, 0, | |
450 | doc: /* Return WINDOW's right sibling window. | |
451 | WINDOW can be any window and defaults to the selected one. | |
452 | Return nil if WINDOW has no right sibling. */) | |
453 | (Lisp_Object window) | |
454 | { | |
455 | return decode_any_window (window)->next; | |
456 | } | |
457 | ||
458 | DEFUN ("window-prev", Fwindow_prev, Swindow_prev, 0, 1, 0, | |
459 | doc: /* Return WINDOW's left sibling window. | |
460 | WINDOW can be any window and defaults to the selected one. | |
461 | Return nil if WINDOW has no left sibling. */) | |
462 | (Lisp_Object window) | |
463 | { | |
464 | return decode_any_window (window)->prev; | |
465 | } | |
466 | \f | |
7ab12479 | 467 | Lisp_Object |
971de7fb | 468 | make_window (void) |
7ab12479 | 469 | { |
cffec418 | 470 | Lisp_Object val; |
7ab12479 | 471 | register struct window *p; |
cffec418 | 472 | |
26605be9 | 473 | p = allocate_window (); |
2a1893f4 SM |
474 | ++sequence_number; |
475 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
476 | XSETFASTINT (p->left_col, 0); |
477 | XSETFASTINT (p->top_line, 0); | |
478 | XSETFASTINT (p->total_lines, 0); | |
479 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 480 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 481 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 482 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
483 | p->start = Fmake_marker (); |
484 | p->pointm = Fmake_marker (); | |
d834a2e9 | 485 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 486 | p->frame = Qnil; |
7ab12479 JB |
487 | p->display_table = Qnil; |
488 | p->dedicated = Qnil; | |
cfbb2395 | 489 | p->window_parameters = Qnil; |
5500c422 | 490 | p->pseudo_window_p = 0; |
72af86bd AS |
491 | memset (&p->cursor, 0, sizeof (p->cursor)); |
492 | memset (&p->last_cursor, 0, sizeof (p->last_cursor)); | |
493 | memset (&p->phys_cursor, 0, sizeof (p->phys_cursor)); | |
5500c422 | 494 | p->desired_matrix = p->current_matrix = 0; |
7a146de2 | 495 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 496 | p->phys_cursor_type = -1; |
4b26579e | 497 | p->phys_cursor_width = -1; |
5500c422 GM |
498 | p->must_be_updated_p = 0; |
499 | XSETFASTINT (p->window_end_vpos, 0); | |
500 | XSETFASTINT (p->window_end_pos, 0); | |
501 | p->window_end_valid = Qnil; | |
502 | p->vscroll = 0; | |
cffec418 | 503 | XSETWINDOW (val, p); |
5500c422 | 504 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 505 | p->frozen_window_start_p = 0; |
6b448755 | 506 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
507 | p->left_margin_cols = Qnil; |
508 | p->right_margin_cols = Qnil; | |
509 | p->left_fringe_width = Qnil; | |
510 | p->right_fringe_width = Qnil; | |
511 | p->fringes_outside_margins = Qnil; | |
512 | p->scroll_bar_width = Qnil; | |
513 | p->vertical_scroll_bar_type = Qt; | |
047aaeb9 | 514 | p->resize_proportionally = Qnil; |
67492200 GM |
515 | |
516 | Vwindow_list = Qnil; | |
7ab12479 JB |
517 | return val; |
518 | } | |
519 | ||
a7ca3326 | 520 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 521 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 522 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
523 | Return nil if that position is scrolled vertically out of view. |
524 | If a character is only partially visible, nil is returned, unless the | |
525 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 526 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 527 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
528 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
529 | ||
530 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
531 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
532 | where X and Y are the pixel coordinates relative to the top left corner | |
533 | of the window. The remaining elements are omitted if the character after | |
534 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 535 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 536 | display row, and VPOS is the row number (0-based) containing POS. */) |
5842a27b | 537 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
7ab12479 JB |
538 | { |
539 | register struct window *w; | |
2452438f | 540 | register EMACS_INT posint; |
7ab12479 | 541 | register struct buffer *buf; |
9a132b1f | 542 | struct text_pos top; |
0cc1039f | 543 | Lisp_Object in_window = Qnil; |
5a857365 | 544 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 545 | int x, y; |
7ab12479 | 546 | |
f28b75a9 MB |
547 | w = decode_window (window); |
548 | buf = XBUFFER (w->buffer); | |
549 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
550 | ||
120b7781 KS |
551 | if (EQ (pos, Qt)) |
552 | posint = -1; | |
553 | else if (!NILP (pos)) | |
7ab12479 | 554 | { |
b7826503 | 555 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
556 | posint = XINT (pos); |
557 | } | |
f28b75a9 MB |
558 | else if (w == XWINDOW (selected_window)) |
559 | posint = PT; | |
560 | else | |
561 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 562 | |
0cc1039f KS |
563 | /* If position is above window start or outside buffer boundaries, |
564 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
565 | if ((EQ (pos, Qt) |
566 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
567 | && CHARPOS (top) >= BUF_BEGV (buf) |
568 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 569 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 570 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
571 | in_window = Qt; |
572 | ||
573 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
574 | { |
575 | Lisp_Object part = Qnil; | |
576 | if (!fully_p) | |
577 | part = list4 (make_number (rtop), make_number (rbot), | |
578 | make_number (rowh), make_number (vpos)); | |
579 | in_window = Fcons (make_number (x), | |
580 | Fcons (make_number (y), part)); | |
581 | } | |
582 | ||
9a132b1f | 583 | return in_window; |
7ab12479 | 584 | } |
53bb6b99 | 585 | |
536833ab | 586 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 587 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
588 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
589 | If WINDOW is nil or omitted, use selected window. | |
590 | ||
7bbc67d2 KS |
591 | Return height of current line if LINE is omitted or nil. Return height of |
592 | header or mode line if LINE is `header-line' and `mode-line'. | |
593 | Otherwise, LINE is a text line number starting from 0. A negative number | |
594 | counts from the end of the window. | |
536833ab | 595 | |
7bbc67d2 | 596 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 597 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 598 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 599 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
600 | the bottom of the text line. If there are off-window pixels at the top |
601 | of the (first) text line, YPOS is negative. | |
536833ab KS |
602 | |
603 | Return nil if window display is not up-to-date. In that case, use | |
604 | `pos-visible-in-window-p' to obtain the information. */) | |
5842a27b | 605 | (Lisp_Object line, Lisp_Object window) |
b3a10345 KS |
606 | { |
607 | register struct window *w; | |
608 | register struct buffer *b; | |
609 | struct glyph_row *row, *end_row; | |
536833ab | 610 | int max_y, crop, i, n; |
b3a10345 KS |
611 | |
612 | w = decode_window (window); | |
613 | ||
614 | if (noninteractive | |
b3a10345 | 615 | || w->pseudo_window_p) |
7bbc67d2 | 616 | return Qnil; |
b3a10345 KS |
617 | |
618 | CHECK_BUFFER (w->buffer); | |
619 | b = XBUFFER (w->buffer); | |
620 | ||
621 | /* Fail if current matrix is not up-to-date. */ | |
622 | if (NILP (w->window_end_valid) | |
623 | || current_buffer->clip_changed | |
624 | || current_buffer->prevent_redisplay_optimizations_p | |
625 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
626 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
627 | return Qnil; | |
628 | ||
7bbc67d2 KS |
629 | if (NILP (line)) |
630 | { | |
631 | i = w->cursor.vpos; | |
632 | if (i < 0 || i >= w->current_matrix->nrows | |
633 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
634 | return Qnil; | |
635 | max_y = window_text_bottom_y (w); | |
636 | goto found_row; | |
637 | } | |
638 | ||
536833ab | 639 | if (EQ (line, Qheader_line)) |
b3a10345 | 640 | { |
536833ab KS |
641 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
642 | return Qnil; | |
643 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
644 | if (!row->enabled_p) |
645 | return Qnil; | |
536833ab KS |
646 | return list4 (make_number (row->height), |
647 | make_number (0), make_number (0), | |
648 | make_number (0)); | |
b3a10345 | 649 | } |
536833ab KS |
650 | |
651 | if (EQ (line, Qmode_line)) | |
b3a10345 | 652 | { |
536833ab KS |
653 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
654 | if (!row->enabled_p) | |
655 | return Qnil; | |
656 | return list4 (make_number (row->height), | |
657 | make_number (0), /* not accurate */ | |
658 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
659 | + window_text_bottom_y (w)), | |
660 | make_number (0)); | |
661 | } | |
b3a10345 | 662 | |
536833ab | 663 | CHECK_NUMBER (line); |
7bbc67d2 | 664 | n = XINT (line); |
536833ab KS |
665 | |
666 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
667 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
668 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 669 | i = 0; |
536833ab KS |
670 | |
671 | while ((n < 0 || i < n) | |
672 | && row <= end_row && row->enabled_p | |
673 | && row->y + row->height < max_y) | |
674 | row++, i++; | |
b3a10345 | 675 | |
536833ab KS |
676 | if (row > end_row || !row->enabled_p) |
677 | return Qnil; | |
678 | ||
7bbc67d2 | 679 | if (++n < 0) |
536833ab KS |
680 | { |
681 | if (-n > i) | |
682 | return Qnil; | |
7bbc67d2 KS |
683 | row += n; |
684 | i += n; | |
b3a10345 KS |
685 | } |
686 | ||
7bbc67d2 | 687 | found_row: |
536833ab KS |
688 | crop = max (0, (row->y + row->height) - max_y); |
689 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 690 | make_number (i), |
536833ab KS |
691 | make_number (row->y), |
692 | make_number (crop)); | |
b3a10345 | 693 | } |
abde8f8c MR |
694 | \f |
695 | DEFUN ("window-total-size", Fwindow_total_size, Swindow_total_size, 0, 2, 0, | |
696 | doc: /* Return the total number of lines of WINDOW. | |
697 | WINDOW can be any window and defaults to the selected one. The return | |
698 | value includes WINDOW's mode line and header line, if any. If WINDOW | |
699 | is internal, the return value is the sum of the total number of lines | |
700 | of WINDOW's child windows if these are vertically combined and the | |
701 | height of WINDOW's first child otherwise. | |
702 | ||
703 | Optional argument HORIZONTAL non-nil means return the total number of | |
704 | columns of WINDOW. In this case the return value includes any vertical | |
705 | dividers or scrollbars of WINDOW. If WINDOW is internal, the return | |
706 | value is the sum of the total number of columns of WINDOW's child | |
707 | windows if they are horizontally combined and the width of WINDOW's | |
708 | first child otherwise. */) | |
709 | (Lisp_Object window, Lisp_Object horizontal) | |
710 | { | |
711 | if (NILP (horizontal)) | |
712 | return decode_any_window (window)->total_lines; | |
713 | else | |
714 | return decode_any_window (window)->total_cols; | |
715 | } | |
b3a10345 | 716 | |
abde8f8c MR |
717 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
718 | doc: /* Return left column of WINDOW. | |
719 | WINDOW can be any window and defaults to the selected one. */) | |
720 | (Lisp_Object window) | |
721 | { | |
722 | return decode_any_window (window)->left_col; | |
723 | } | |
724 | ||
725 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
726 | doc: /* Return top line of WINDOW. | |
727 | WINDOW can be any window and defaults to the selected one. */) | |
728 | (Lisp_Object window) | |
729 | { | |
730 | return decode_any_window (window)->top_line; | |
731 | } | |
732 | ||
733 | /* Return the number of lines of W's body. Don't count any mode or | |
734 | header line of W. */ | |
735 | ||
736 | int | |
737 | window_body_lines (struct window *w) | |
738 | { | |
739 | int height = XFASTINT (w->total_lines); | |
740 | ||
741 | if (!MINI_WINDOW_P (w)) | |
742 | { | |
743 | if (WINDOW_WANTS_MODELINE_P (w)) | |
744 | --height; | |
745 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
746 | --height; | |
747 | } | |
748 | ||
749 | return height; | |
750 | } | |
751 | ||
752 | /* Return the number of columns of W's body. Don't count columns | |
753 | occupied by the scroll bar or the vertical bar separating W from its | |
754 | right sibling. On window-systems don't count fringes or display | |
755 | margins either. */ | |
756 | ||
757 | int | |
758 | window_body_cols (struct window *w) | |
759 | { | |
760 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
761 | int width = XINT (w->total_cols); | |
762 | ||
763 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
764 | /* Scroll bars occupy a few columns. */ | |
765 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
766 | else if (!FRAME_WINDOW_P (f) | |
767 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
768 | /* The column of `|' characters separating side-by-side windows | |
769 | occupies one column only. */ | |
770 | width -= 1; | |
771 | ||
772 | if (FRAME_WINDOW_P (f)) | |
773 | /* On window-systems, fringes and display margins cannot be | |
774 | used for normal text. */ | |
775 | width -= (WINDOW_FRINGE_COLS (w) | |
776 | + WINDOW_LEFT_MARGIN_COLS (w) | |
777 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
778 | ||
779 | return width; | |
780 | } | |
781 | ||
782 | DEFUN ("window-body-size", Fwindow_body_size, Swindow_body_size, 0, 2, 0, | |
783 | doc: /* Return the number of lines of WINDOW's body. | |
784 | WINDOW must be a live window and defaults to the selected one. The | |
785 | return value does not include WINDOW's mode line and header line, if | |
786 | any. | |
787 | ||
788 | Optional argument HORIZONTAL non-nil means return the number of columns | |
789 | of WINDOW's body. In this case, the return value does not include any | |
790 | vertical dividers or scroll bars owned by WINDOW. On a window-system | |
791 | the return value does not include the number of columns used for | |
792 | WINDOW's fringes or display margins either. */) | |
793 | (Lisp_Object window, Lisp_Object horizontal) | |
794 | { | |
795 | struct window *w = decode_any_window (window); | |
796 | ||
797 | if (NILP (horizontal)) | |
798 | return make_number (window_body_lines (w)); | |
799 | else | |
800 | return make_number (window_body_cols (w)); | |
801 | } | |
536833ab | 802 | |
7ab12479 | 803 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, |
8fef9de1 MR |
804 | doc: /* Return the number of lines in WINDOW. |
805 | WINDOW defaults to the selected window. | |
806 | ||
a77cfeaf CS |
807 | The return value includes WINDOW's mode line and header line, if any. |
808 | ||
809 | Note: The function does not take into account the value of `line-spacing' | |
810 | when calculating the number of lines in WINDOW. */) | |
5842a27b | 811 | (Lisp_Object window) |
7ab12479 | 812 | { |
6b61353c | 813 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
814 | } |
815 | ||
816 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 | 817 | doc: /* Return the number of display columns in WINDOW. |
d653c8cc MR |
818 | WINDOW defaults to the selected window. |
819 | ||
820 | Note: The return value is the number of columns available for text in | |
821 | WINDOW. If you want to find out how many columns WINDOW takes up, use | |
822 | (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
5842a27b | 823 | (Lisp_Object window) |
7ab12479 | 824 | { |
abde8f8c | 825 | return make_number (window_body_cols (decode_any_window (window))); |
7ab12479 JB |
826 | } |
827 | ||
35ea56c9 MR |
828 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
829 | doc: /* Return t if WINDOW is as wide as its frame. | |
830 | WINDOW defaults to the selected window. */) | |
5842a27b | 831 | (Lisp_Object window) |
35ea56c9 MR |
832 | { |
833 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
834 | } | |
835 | ||
7ab12479 | 836 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
837 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
838 | WINDOW defaults to the selected window. */) | |
5842a27b | 839 | (Lisp_Object window) |
7ab12479 JB |
840 | { |
841 | return decode_window (window)->hscroll; | |
842 | } | |
843 | ||
844 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 845 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 846 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
847 | |
848 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 849 | window so that the location of point moves off-window. */) |
5842a27b | 850 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 851 | { |
ea68264b GM |
852 | struct window *w = decode_window (window); |
853 | int hscroll; | |
7ab12479 | 854 | |
b7826503 | 855 | CHECK_NUMBER (ncol); |
ea68264b | 856 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 857 | |
ea68264b GM |
858 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
859 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 860 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 861 | |
c67fa410 | 862 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
863 | return ncol; |
864 | } | |
865 | ||
190eb263 RS |
866 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
867 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 868 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 869 | WINDOW defaults to the selected window. |
fdb82f93 | 870 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 871 | (Lisp_Object window) |
190eb263 RS |
872 | { |
873 | return decode_window (window)->redisplay_end_trigger; | |
874 | } | |
875 | ||
876 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
877 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
878 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
879 | VALUE should be a buffer position (typically a marker) or nil. | |
880 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
881 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
882 | with two arguments: WINDOW, and the end trigger value. | |
883 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 884 | (register Lisp_Object window, Lisp_Object value) |
190eb263 RS |
885 | { |
886 | register struct window *w; | |
887 | ||
888 | w = decode_window (window); | |
889 | w->redisplay_end_trigger = value; | |
890 | return value; | |
891 | } | |
892 | ||
7ab12479 | 893 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 894 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
895 | The list has the form (LEFT TOP RIGHT BOTTOM). |
896 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
897 | all relative to 0, 0 at top left corner of frame. | |
898 | ||
899 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
900 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
901 | The edges include the space used by WINDOW's scroll bar, display | |
902 | margins, fringes, header line, and/or mode line. For the edges of | |
903 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 904 | (Lisp_Object window) |
7ab12479 | 905 | { |
6b61353c | 906 | register struct window *w = decode_any_window (window); |
7ab12479 | 907 | |
949cf20f KS |
908 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
909 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
910 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
911 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
912 | Qnil)))); | |
7ab12479 JB |
913 | } |
914 | ||
c99a9eb3 RS |
915 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
916 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
917 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
918 | the top left corner of the frame. | |
919 | ||
920 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
921 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
922 | The pixel edges include the space used by WINDOW's scroll bar, display | |
923 | margins, fringes, header line, and/or mode line. For the pixel edges | |
924 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 925 | (Lisp_Object window) |
c99a9eb3 | 926 | { |
6b61353c | 927 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
928 | |
929 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
930 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
931 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
932 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
933 | Qnil)))); | |
934 | } | |
935 | ||
9d5405ec J |
936 | static void |
937 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) | |
938 | { | |
939 | struct frame *f = XFRAME (w->frame); | |
940 | *add_y = f->top_pos; | |
941 | #ifdef FRAME_MENUBAR_HEIGHT | |
942 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
943 | #endif | |
bfeabdc3 JD |
944 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
945 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
946 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
947 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
948 | #endif | |
949 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
950 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
951 | #endif | |
952 | *add_x = f->left_pos; | |
bfeabdc3 JD |
953 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
954 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
955 | #endif | |
9d5405ec J |
956 | } |
957 | ||
958 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
959 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
960 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
961 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
962 | the top left corner of the display. | |
963 | ||
964 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
965 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
966 | The pixel edges include the space used by WINDOW's scroll bar, display | |
967 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 968 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 969 | (Lisp_Object window) |
9d5405ec J |
970 | { |
971 | register struct window *w = decode_any_window (window); | |
972 | int add_x, add_y; | |
ed3751c8 | 973 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
974 | |
975 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
976 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
977 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
978 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
979 | Qnil)))); | |
980 | } | |
981 | ||
c99a9eb3 RS |
982 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
983 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
984 | The list has the form (LEFT TOP RIGHT BOTTOM). |
985 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
986 | all relative to 0, 0 at top left corner of frame. | |
987 | ||
988 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
989 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
990 | The inside edges do not include the space used by the WINDOW's scroll | |
991 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 992 | (Lisp_Object window) |
c99a9eb3 | 993 | { |
6b61353c | 994 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
995 | |
996 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
997 | + WINDOW_LEFT_MARGIN_COLS (w) | |
998 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
999 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
1000 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 1001 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
1002 | - WINDOW_RIGHT_MARGIN_COLS (w) |
1003 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1004 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
1005 | - WINDOW_MODE_LINE_LINES (w))); | |
1006 | } | |
1007 | ||
1008 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 1009 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
1010 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
1011 | the top left corner of the frame. | |
1012 | ||
1013 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1014 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1015 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1016 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1017 | (Lisp_Object window) |
c99a9eb3 | 1018 | { |
6b61353c | 1019 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
1020 | |
1021 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
1022 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1023 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1024 | make_number (WINDOW_TOP_EDGE_Y (w) | |
1025 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 1026 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
1027 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
1028 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1029 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
1030 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
1031 | } | |
1032 | ||
9d5405ec J |
1033 | DEFUN ("window-inside-absolute-pixel-edges", |
1034 | Fwindow_inside_absolute_pixel_edges, | |
1035 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
1036 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
1037 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
1038 | the top left corner of the display. | |
1039 | ||
1040 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1041 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1042 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1043 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1044 | (Lisp_Object window) |
9d5405ec J |
1045 | { |
1046 | register struct window *w = decode_any_window (window); | |
1047 | int add_x, add_y; | |
ed3751c8 | 1048 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
1049 | |
1050 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
1051 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1052 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1053 | make_number (WINDOW_TOP_EDGE_Y (w) | |
1054 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1055 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1056 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1057 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1058 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
1059 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
1060 | } | |
1061 | ||
9173a8fb | 1062 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1063 | If it is not, return ON_NOTHING; |
9173a8fb | 1064 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1065 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1066 | if it is on the border between the window and its right sibling, |
341f3858 | 1067 | return ON_VERTICAL_BORDER. |
9173a8fb | 1068 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1069 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1070 | if it is in left or right fringe of the window, |
9173a8fb | 1071 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1072 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1073 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1074 | |
1075 | X and Y are frame relative pixel coordinates. */ | |
1076 | ||
7442878f | 1077 | static enum window_part |
9173a8fb | 1078 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1079 | { |
b0228ace | 1080 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
9173a8fb | 1081 | int left_x, right_x; |
7442878f | 1082 | enum window_part part; |
949cf20f KS |
1083 | int ux = FRAME_COLUMN_WIDTH (f); |
1084 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
1085 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
1086 | /* The width of the area where the vertical line can be dragged. |
1087 | (Between mode lines for instance. */ | |
1088 | int grabbable_width = ux; | |
949cf20f | 1089 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb CY |
1090 | int top_y = WINDOW_TOP_EDGE_Y (w); |
1091 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
1092 | ||
1093 | /* Outside any interesting row? */ | |
1094 | if (y < top_y || y >= bottom_y) | |
1095 | return ON_NOTHING; | |
b0228ace | 1096 | |
466539bc EZ |
1097 | /* In what's below, we subtract 1 when computing right_x because we |
1098 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1099 | if (w->pseudo_window_p) |
1100 | { | |
1101 | left_x = 0; | |
949cf20f | 1102 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1103 | } |
1104 | else | |
1105 | { | |
949cf20f KS |
1106 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1107 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1108 | } |
37962e60 | 1109 | |
1cb794ba GM |
1110 | /* On the mode line or header line? If it's near the start of |
1111 | the mode or header line of window that's has a horizontal | |
1112 | sibling, say it's on the vertical line. That's to be able | |
1113 | to resize windows horizontally in case we're using toolkit | |
1114 | scroll bars. */ | |
b0228ace | 1115 | |
1cb794ba | 1116 | if (WINDOW_WANTS_MODELINE_P (w) |
9173a8fb | 1117 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 1118 | { |
949cf20f KS |
1119 | part = ON_MODE_LINE; |
1120 | ||
1121 | header_vertical_border_check: | |
b0228ace GM |
1122 | /* We're somewhere on the mode line. We consider the place |
1123 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 1124 | as the vertical border. If scroll bars on the left, |
b0228ace | 1125 | return the right window. */ |
9173a8fb CY |
1126 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
1127 | || WINDOW_RIGHTMOST_P (w)) | |
1128 | && !WINDOW_LEFTMOST_P (w) | |
1129 | && eabs (x - x0) < grabbable_width) | |
1130 | return ON_VERTICAL_BORDER; | |
1131 | ||
1132 | /* Make sure we're not at the rightmost position of a | |
1133 | mode-/header-line and there's yet another window on the | |
1134 | right. (Bug#1372) */ | |
1135 | else if ((WINDOW_RIGHTMOST_P (w) || x < x1) | |
1136 | && eabs (x - x1) < grabbable_width) | |
1137 | return ON_VERTICAL_BORDER; | |
1138 | ||
1139 | if (x < x0 || x >= x1) | |
cb639b8f KS |
1140 | return ON_NOTHING; |
1141 | ||
949cf20f | 1142 | return part; |
b0228ace | 1143 | } |
949cf20f KS |
1144 | |
1145 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
9173a8fb | 1146 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 1147 | { |
949cf20f KS |
1148 | part = ON_HEADER_LINE; |
1149 | goto header_vertical_border_check; | |
1cb794ba | 1150 | } |
949cf20f | 1151 | |
9173a8fb | 1152 | if (x < x0 || x >= x1) return ON_NOTHING; |
cb639b8f | 1153 | |
949cf20f | 1154 | /* Outside any interesting column? */ |
9173a8fb CY |
1155 | if (x < left_x || x > right_x) |
1156 | return ON_SCROLL_BAR; | |
949cf20f KS |
1157 | |
1158 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1159 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1160 | |
949cf20f KS |
1161 | text_left = window_box_left (w, TEXT_AREA); |
1162 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1163 | ||
1164 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1165 | { |
447e9da0 | 1166 | if (!w->pseudo_window_p |
949cf20f | 1167 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1168 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1169 | && (eabs (x - right_x) < grabbable_width)) |
1170 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1171 | } |
9173a8fb CY |
1172 | /* Need to say "x > right_x" rather than >=, since on character |
1173 | terminals, the vertical line's x coordinate is right_x. */ | |
1174 | else if (!w->pseudo_window_p | |
1175 | && !WINDOW_RIGHTMOST_P (w) | |
1176 | && x > right_x - ux) | |
1177 | return ON_VERTICAL_BORDER; | |
1178 | ||
1179 | if (x < text_left) | |
949cf20f KS |
1180 | { |
1181 | if (lmargin_width > 0 | |
1182 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1183 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1184 | : (x < left_x + lmargin_width))) | |
1185 | return ON_LEFT_MARGIN; | |
1186 | ||
949cf20f KS |
1187 | return ON_LEFT_FRINGE; |
1188 | } | |
1189 | ||
9173a8fb | 1190 | if (x >= text_right) |
949cf20f KS |
1191 | { |
1192 | if (rmargin_width > 0 | |
1193 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1194 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1195 | : (x >= right_x - rmargin_width))) | |
1196 | return ON_RIGHT_MARGIN; | |
1197 | ||
949cf20f KS |
1198 | return ON_RIGHT_FRINGE; |
1199 | } | |
1200 | ||
1201 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1202 | return ON_TEXT; |
d5783c40 JB |
1203 | } |
1204 | ||
9173a8fb CY |
1205 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1206 | x-coordinate relative to part PART of window W. */ | |
1207 | int | |
1208 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1209 | { | |
1210 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1211 | ||
1212 | switch (part) | |
1213 | { | |
1214 | case ON_TEXT: | |
1215 | return x - window_box_left (w, TEXT_AREA); | |
1216 | ||
1217 | case ON_LEFT_FRINGE: | |
1218 | return x - left_x; | |
1219 | ||
1220 | case ON_RIGHT_FRINGE: | |
1221 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1222 | ||
1223 | case ON_LEFT_MARGIN: | |
1224 | return (x - left_x | |
1225 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1226 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1227 | ||
1228 | case ON_RIGHT_MARGIN: | |
1229 | return (x + 1 | |
1230 | - ((w->pseudo_window_p) | |
1231 | ? WINDOW_TOTAL_WIDTH (w) | |
1232 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1233 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1234 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1235 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1236 | } | |
1237 | ||
1238 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1239 | return 0; | |
1240 | } | |
1241 | ||
b0228ace | 1242 | |
d5783c40 | 1243 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1244 | Scoordinates_in_window_p, 2, 2, 0, |
1245 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
1246 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
1247 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1248 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1249 | frame. |
1250 | If COORDINATES are in the text portion of WINDOW, | |
1251 | the coordinates relative to the window are returned. | |
1252 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1253 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1254 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1255 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1256 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1257 | `vertical-line' is returned. |
1258 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1259 | or `right-margin' is returned. */) | |
5842a27b | 1260 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1261 | { |
5500c422 GM |
1262 | struct window *w; |
1263 | struct frame *f; | |
d5783c40 | 1264 | int x, y; |
5500c422 | 1265 | Lisp_Object lx, ly; |
d5783c40 | 1266 | |
6b61353c | 1267 | CHECK_WINDOW (window); |
5500c422 GM |
1268 | w = XWINDOW (window); |
1269 | f = XFRAME (w->frame); | |
b7826503 | 1270 | CHECK_CONS (coordinates); |
5500c422 GM |
1271 | lx = Fcar (coordinates); |
1272 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1273 | CHECK_NUMBER_OR_FLOAT (lx); |
1274 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1275 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1276 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1277 | |
9173a8fb | 1278 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1279 | { |
7442878f | 1280 | case ON_NOTHING: |
d5783c40 JB |
1281 | return Qnil; |
1282 | ||
7442878f | 1283 | case ON_TEXT: |
9173a8fb CY |
1284 | /* Convert X and Y to window relative pixel coordinates, and |
1285 | return the canonical char units. */ | |
1286 | x -= window_box_left (w, TEXT_AREA); | |
1287 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1288 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1289 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1290 | |
7442878f | 1291 | case ON_MODE_LINE: |
d5783c40 | 1292 | return Qmode_line; |
37962e60 | 1293 | |
7442878f | 1294 | case ON_VERTICAL_BORDER: |
e5d77022 | 1295 | return Qvertical_line; |
d5783c40 | 1296 | |
7442878f | 1297 | case ON_HEADER_LINE: |
045dee35 | 1298 | return Qheader_line; |
5500c422 | 1299 | |
7442878f GM |
1300 | case ON_LEFT_FRINGE: |
1301 | return Qleft_fringe; | |
177c0ea7 | 1302 | |
7442878f GM |
1303 | case ON_RIGHT_FRINGE: |
1304 | return Qright_fringe; | |
fbad6f9a | 1305 | |
49b996e7 GM |
1306 | case ON_LEFT_MARGIN: |
1307 | return Qleft_margin; | |
177c0ea7 | 1308 | |
49b996e7 GM |
1309 | case ON_RIGHT_MARGIN: |
1310 | return Qright_margin; | |
1311 | ||
6487f669 RS |
1312 | case ON_SCROLL_BAR: |
1313 | /* Historically we are supposed to return nil in this case. */ | |
1314 | return Qnil; | |
1315 | ||
d5783c40 JB |
1316 | default: |
1317 | abort (); | |
1318 | } | |
1319 | } | |
1320 | ||
67492200 GM |
1321 | |
1322 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1323 | Check if window W contains coordinates specified by USER_DATA which |
1324 | is actually a pointer to a struct check_window_data CW. | |
1325 | ||
1326 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1327 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1328 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1329 | zero from this function to stop iterating over windows. */ |
1330 | ||
1331 | struct check_window_data | |
1332 | { | |
1333 | Lisp_Object *window; | |
9173a8fb | 1334 | int x, y; |
341f3858 | 1335 | enum window_part *part; |
f95464e4 | 1336 | }; |
67492200 GM |
1337 | |
1338 | static int | |
971de7fb | 1339 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1340 | { |
f95464e4 | 1341 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1342 | enum window_part found; |
1343 | int continue_p = 1; | |
67492200 | 1344 | |
f95464e4 | 1345 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1346 | if (found != ON_NOTHING) |
67492200 | 1347 | { |
341f3858 | 1348 | *cw->part = found; |
f95464e4 | 1349 | XSETWINDOW (*cw->window, w); |
7442878f | 1350 | continue_p = 0; |
67492200 | 1351 | } |
177c0ea7 | 1352 | |
7442878f | 1353 | return continue_p; |
67492200 GM |
1354 | } |
1355 | ||
1356 | ||
5500c422 | 1357 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1358 | return it as a Lisp_Object. |
1359 | ||
1360 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1361 | set *PART to the id of that element. |
949cf20f | 1362 | |
341f3858 | 1363 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1364 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1365 | ||
1366 | This function was previously implemented with a loop cycling over | |
1367 | windows with Fnext_window, and starting with the frame's selected | |
1368 | window. It turned out that this doesn't work with an | |
1369 | implementation of next_window using Vwindow_list, because | |
1370 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1371 | tree of F when this function is called asynchronously from | |
1372 | note_mouse_highlight. The original loop didn't terminate in this | |
1373 | case. */ | |
5500c422 | 1374 | |
7ab12479 | 1375 | Lisp_Object |
9173a8fb CY |
1376 | window_from_coordinates (struct frame *f, int x, int y, |
1377 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1378 | { |
67492200 | 1379 | Lisp_Object window; |
f95464e4 | 1380 | struct check_window_data cw; |
341f3858 KS |
1381 | enum window_part dummy; |
1382 | ||
1383 | if (part == 0) | |
1384 | part = &dummy; | |
5500c422 | 1385 | |
67492200 | 1386 | window = Qnil; |
9173a8fb | 1387 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1388 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1389 | |
67492200 GM |
1390 | /* If not found above, see if it's in the tool bar window, if a tool |
1391 | bar exists. */ | |
1392 | if (NILP (window) | |
1393 | && tool_bar_p | |
1394 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1395 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
9173a8fb | 1396 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
7442878f | 1397 | != ON_NOTHING)) |
5500c422 | 1398 | { |
341f3858 | 1399 | *part = ON_TEXT; |
67492200 | 1400 | window = f->tool_bar_window; |
5500c422 | 1401 | } |
37962e60 | 1402 | |
67492200 | 1403 | return window; |
7ab12479 JB |
1404 | } |
1405 | ||
ab17c3f2 | 1406 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1407 | doc: /* Return window containing coordinates X and Y on FRAME. |
1408 | If omitted, FRAME defaults to the currently selected frame. | |
1409 | The top left corner of the frame is considered to be row 0, | |
1410 | column 0. */) | |
5842a27b | 1411 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1412 | { |
5500c422 | 1413 | struct frame *f; |
7ab12479 | 1414 | |
44fa5b1e | 1415 | if (NILP (frame)) |
1ae1a37d | 1416 | frame = selected_frame; |
b7826503 | 1417 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1418 | f = XFRAME (frame); |
7ab12479 | 1419 | |
5500c422 | 1420 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1421 | CHECK_NUMBER_OR_FLOAT (x); |
1422 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1423 | |
177c0ea7 | 1424 | return window_from_coordinates (f, |
2c77cf3b RS |
1425 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1426 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1427 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1428 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1429 | 0, 0); |
7ab12479 JB |
1430 | } |
1431 | ||
1432 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1433 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1434 | WINDOW defaults to the selected window. |
1435 | ||
fdb82f93 PJ |
1436 | For a nonselected window, this is the value point would have |
1437 | if that window were selected. | |
1438 | ||
1439 | Note that, when WINDOW is the selected window and its buffer | |
1440 | is also currently selected, the value returned is the same as (point). | |
1441 | It would be more strictly correct to return the `top-level' value | |
1442 | of point, outside of any save-excursion forms. | |
1443 | But that is hard to define. */) | |
5842a27b | 1444 | (Lisp_Object window) |
7ab12479 JB |
1445 | { |
1446 | register struct window *w = decode_window (window); | |
1447 | ||
1448 | if (w == XWINDOW (selected_window) | |
1449 | && current_buffer == XBUFFER (w->buffer)) | |
1450 | return Fpoint (); | |
1451 | return Fmarker_position (w->pointm); | |
1452 | } | |
1453 | ||
1454 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1455 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1456 | WINDOW defaults to the selected window. |
fdb82f93 | 1457 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1458 | (Lisp_Object window) |
7ab12479 JB |
1459 | { |
1460 | return Fmarker_position (decode_window (window)->start); | |
1461 | } | |
1462 | ||
8646118f RS |
1463 | /* This is text temporarily removed from the doc string below. |
1464 | ||
fdb82f93 PJ |
1465 | This function returns nil if the position is not currently known. |
1466 | That happens when redisplay is preempted and doesn't finish. | |
1467 | If in that case you want to compute where the end of the window would | |
1468 | have been if redisplay had finished, do this: | |
1469 | (save-excursion | |
1470 | (goto-char (window-start window)) | |
1471 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1472 | (point))") */ |
1473 | ||
478292ed | 1474 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1475 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1476 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1477 | This is updated by redisplay, when it runs to completion. |
1478 | Simply changing the buffer text or setting `window-start' | |
1479 | does not update this value. | |
a0a37a6f LT |
1480 | Return nil if there is no recorded value. \(This can happen if the |
1481 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1482 | If UPDATE is non-nil, compute the up-to-date position |
1483 | if it isn't already recorded. */) | |
5842a27b | 1484 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1485 | { |
1486 | Lisp_Object value; | |
1487 | struct window *w = decode_window (window); | |
5a41ab94 | 1488 | Lisp_Object buf; |
31790df3 | 1489 | struct buffer *b; |
5a41ab94 RS |
1490 | |
1491 | buf = w->buffer; | |
b7826503 | 1492 | CHECK_BUFFER (buf); |
b3a10345 | 1493 | b = XBUFFER (buf); |
5a41ab94 | 1494 | |
8646118f | 1495 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1496 | /* If we don't know the end position, return nil. |
1497 | The user can compute it with vertical-motion if he wants to. | |
1498 | It would be nicer to do it automatically, | |
1499 | but that's so slow that it would probably bother people. */ | |
1500 | if (NILP (w->window_end_valid)) | |
1501 | return Qnil; | |
8646118f | 1502 | #endif |
7250968e | 1503 | |
478292ed RS |
1504 | if (! NILP (update) |
1505 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1506 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1507 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1508 | && !noninteractive) |
478292ed | 1509 | { |
cbc099e5 GM |
1510 | struct text_pos startp; |
1511 | struct it it; | |
b3a10345 KS |
1512 | struct buffer *old_buffer = NULL; |
1513 | ||
1514 | /* Cannot use Fvertical_motion because that function doesn't | |
1515 | cope with variable-height lines. */ | |
1516 | if (b != current_buffer) | |
1517 | { | |
1518 | old_buffer = current_buffer; | |
1519 | set_buffer_internal (b); | |
1520 | } | |
2d6d9df0 GM |
1521 | |
1522 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1523 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1524 | `-l' containing a call to `rmail' with subsequent other |
1525 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1526 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1527 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1528 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1529 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1530 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1531 | else |
cbc099e5 GM |
1532 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1533 | ||
cbc099e5 GM |
1534 | start_display (&it, w, startp); |
1535 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1536 | if (it.current_y < it.last_visible_y) |
1537 | move_it_past_eol (&it); | |
cbc099e5 | 1538 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1539 | |
99593a9d GM |
1540 | if (old_buffer) |
1541 | set_buffer_internal (old_buffer); | |
478292ed RS |
1542 | } |
1543 | else | |
b3a10345 | 1544 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1545 | |
1546 | return value; | |
1547 | } | |
1548 | ||
a7ca3326 | 1549 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f LT |
1550 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1551 | Return POS. */) | |
5842a27b | 1552 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1553 | { |
1554 | register struct window *w = decode_window (window); | |
1555 | ||
b7826503 | 1556 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1557 | if (w == XWINDOW (selected_window) |
1558 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1559 | Fgoto_char (pos); |
1560 | else | |
1561 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1562 | |
0685cb3c GM |
1563 | /* We have to make sure that redisplay updates the window to show |
1564 | the new value of point. */ | |
1565 | if (!EQ (window, selected_window)) | |
799417bd | 1566 | ++windows_or_buffers_changed; |
177c0ea7 | 1567 | |
7ab12479 JB |
1568 | return pos; |
1569 | } | |
1570 | ||
1571 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1572 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1573 | WINDOW defaults to the selected window. Return POS. |
1574 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1575 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1576 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1577 | { |
1578 | register struct window *w = decode_window (window); | |
1579 | ||
b7826503 | 1580 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1581 | set_marker_restricted (w->start, pos, w->buffer); |
1582 | /* this is not right, but much easier than doing what is right. */ | |
1583 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1584 | if (NILP (noforce)) |
7ab12479 JB |
1585 | w->force_start = Qt; |
1586 | w->update_mode_line = Qt; | |
d834a2e9 | 1587 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1588 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1589 | if (!EQ (window, selected_window)) |
1590 | windows_or_buffers_changed++; | |
ce7fae7d | 1591 | |
7ab12479 JB |
1592 | return pos; |
1593 | } | |
1594 | ||
d653c8cc | 1595 | |
a7ca3326 | 1596 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1597 | 0, 1, 0, |
1598 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1599 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1600 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1601 | never called with WINDOW as its argument, or the value set by that | |
1602 | function was internally reset since its last call. WINDOW defaults to | |
1603 | the selected window. | |
1604 | ||
1605 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1606 | from displaying another buffer in it. `get-lru-window' and | |
1607 | `get-largest-window' treat dedicated windows specially. | |
1608 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1609 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1610 | ||
1611 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1612 | window, unless that window is "strongly" dedicated to its buffer, that | |
1613 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1614 | (Lisp_Object window) |
7ab12479 JB |
1615 | { |
1616 | return decode_window (window)->dedicated; | |
1617 | } | |
1618 | ||
d207b766 RS |
1619 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1620 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1621 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1622 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1623 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1624 | Return FLAG. |
1625 | ||
7bfac547 MR |
1626 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1627 | from displaying another buffer in it. `get-lru-window' and | |
1628 | `get-largest-window' treat dedicated windows specially. | |
1629 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1630 | `kill-buffer' can delete a dedicated window and the containing | |
1631 | frame. | |
1632 | ||
1633 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1634 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1635 | displayed by a window, unless that window is strongly dedicated to its | |
1636 | buffer. If and when `set-window-buffer' displays another buffer in a | |
1637 | window, it also makes sure that the window is not marked as dedicated. */) | |
5842a27b | 1638 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1639 | { |
1640 | register struct window *w = decode_window (window); | |
1641 | ||
d653c8cc | 1642 | w->dedicated = flag; |
7ab12479 JB |
1643 | return w->dedicated; |
1644 | } | |
1645 | ||
d653c8cc | 1646 | |
cfbb2395 JB |
1647 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1648 | 0, 1, 0, | |
d653c8cc MR |
1649 | doc: /* Return the parameters of WINDOW and their values. |
1650 | WINDOW defaults to the selected window. The return value is a list of | |
1651 | elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1652 | (Lisp_Object window) |
cfbb2395 | 1653 | { |
927abf37 | 1654 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1655 | } |
1656 | ||
1657 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1658 | 2, 2, 0, | |
d653c8cc MR |
1659 | doc: /* Return WINDOW's value for PARAMETER. |
1660 | WINDOW defaults to the selected window. */) | |
5842a27b | 1661 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1662 | { |
927abf37 JB |
1663 | Lisp_Object result; |
1664 | ||
1665 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1666 | return CDR_SAFE (result); | |
cfbb2395 JB |
1667 | } |
1668 | ||
cfbb2395 JB |
1669 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1670 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1671 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1672 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1673 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 JB |
1674 | { |
1675 | register struct window *w = decode_window (window); | |
1676 | Lisp_Object old_alist_elt; | |
1677 | ||
1678 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1679 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1680 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1681 | else | |
1682 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1683 | return value; |
cfbb2395 JB |
1684 | } |
1685 | ||
1686 | ||
7ab12479 JB |
1687 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1688 | 0, 1, 0, | |
c85322d0 EZ |
1689 | doc: /* Return the display-table that WINDOW is using. |
1690 | WINDOW defaults to the selected window. */) | |
5842a27b | 1691 | (Lisp_Object window) |
7ab12479 JB |
1692 | { |
1693 | return decode_window (window)->display_table; | |
1694 | } | |
1695 | ||
5500c422 GM |
1696 | /* Get the display table for use on window W. This is either W's |
1697 | display table or W's buffer's display table. Ignore the specified | |
1698 | tables if they are not valid; if no valid table is specified, | |
1699 | return 0. */ | |
7ab12479 | 1700 | |
319315f1 | 1701 | struct Lisp_Char_Table * |
971de7fb | 1702 | window_display_table (struct window *w) |
7ab12479 | 1703 | { |
c756cdbe GM |
1704 | struct Lisp_Char_Table *dp = NULL; |
1705 | ||
1706 | if (DISP_TABLE_P (w->display_table)) | |
1707 | dp = XCHAR_TABLE (w->display_table); | |
1708 | else if (BUFFERP (w->buffer)) | |
1709 | { | |
1710 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1711 | |
4b4deea2 TT |
1712 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1713 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1714 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1715 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1716 | } | |
171d003c | 1717 | |
c756cdbe | 1718 | return dp; |
7ab12479 JB |
1719 | } |
1720 | ||
3a2712f9 | 1721 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1722 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1723 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1724 | { |
1725 | register struct window *w; | |
7ab12479 JB |
1726 | |
1727 | w = decode_window (window); | |
1728 | w->display_table = table; | |
1729 | return table; | |
1730 | } | |
1731 | \f | |
2f7c71a1 AS |
1732 | static void delete_window (Lisp_Object); |
1733 | ||
7ab12479 JB |
1734 | /* Record info on buffer window w is displaying |
1735 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1736 | static void |
971de7fb | 1737 | unshow_buffer (register struct window *w) |
7ab12479 | 1738 | { |
12cae7c0 | 1739 | Lisp_Object buf; |
b73ea88e | 1740 | struct buffer *b; |
7ab12479 | 1741 | |
12cae7c0 | 1742 | buf = w->buffer; |
b73ea88e RS |
1743 | b = XBUFFER (buf); |
1744 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1745 | abort (); |
1746 | ||
573f41ab | 1747 | #if 0 |
7ab12479 JB |
1748 | if (w == XWINDOW (selected_window) |
1749 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1750 | /* Do this except when the selected window's buffer | |
1751 | is being removed from some other window. */ | |
573f41ab RS |
1752 | #endif |
1753 | /* last_window_start records the start position that this buffer | |
1754 | had in the last window to be disconnected from it. | |
1755 | Now that this statement is unconditional, | |
1756 | it is possible for the buffer to be displayed in the | |
1757 | selected window, while last_window_start reflects another | |
1758 | window which was recently showing the same buffer. | |
1759 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1760 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1761 | |
1762 | /* Point in the selected window's buffer | |
1763 | is actually stored in that buffer, and the window's pointm isn't used. | |
1764 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1765 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1766 | /* This line helps to fix Horsley's testbug.el bug. */ | |
4b4deea2 TT |
1767 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1768 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
1769 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) | |
b73ea88e RS |
1770 | temp_set_point_both (b, |
1771 | clip_to_bounds (BUF_BEGV (b), | |
1772 | XMARKER (w->pointm)->charpos, | |
1773 | BUF_ZV (b)), | |
1774 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1775 | marker_byte_position (w->pointm), | |
1776 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1777 | |
4b4deea2 TT |
1778 | if (WINDOWP (BVAR (b, last_selected_window)) |
1779 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
1780 | BVAR (b, last_selected_window) = Qnil; | |
7ab12479 JB |
1781 | } |
1782 | ||
1783 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1784 | static void |
971de7fb | 1785 | replace_window (Lisp_Object old, Lisp_Object replacement) |
7ab12479 JB |
1786 | { |
1787 | register Lisp_Object tem; | |
1788 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1789 | ||
44fa5b1e JB |
1790 | /* If OLD is its frame's root_window, then replacement is the new |
1791 | root_window for that frame. */ | |
7ab12479 | 1792 | |
7f4161e0 | 1793 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1794 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1795 | |
949cf20f KS |
1796 | p->left_col = o->left_col; |
1797 | p->top_line = o->top_line; | |
1798 | p->total_cols = o->total_cols; | |
1799 | p->total_lines = o->total_lines; | |
5500c422 GM |
1800 | p->desired_matrix = p->current_matrix = 0; |
1801 | p->vscroll = 0; | |
72af86bd AS |
1802 | memset (&p->cursor, 0, sizeof (p->cursor)); |
1803 | memset (&p->last_cursor, 0, sizeof (p->last_cursor)); | |
1804 | memset (&p->phys_cursor, 0, sizeof (p->phys_cursor)); | |
5500c422 | 1805 | p->phys_cursor_type = -1; |
4b26579e | 1806 | p->phys_cursor_width = -1; |
5500c422 GM |
1807 | p->must_be_updated_p = 0; |
1808 | p->pseudo_window_p = 0; | |
1809 | XSETFASTINT (p->window_end_vpos, 0); | |
1810 | XSETFASTINT (p->window_end_pos, 0); | |
1811 | p->window_end_valid = Qnil; | |
7bbb5782 | 1812 | p->frozen_window_start_p = 0; |
949cf20f | 1813 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1814 | |
1815 | p->next = tem = o->next; | |
265a9e55 | 1816 | if (!NILP (tem)) |
7ab12479 JB |
1817 | XWINDOW (tem)->prev = replacement; |
1818 | ||
1819 | p->prev = tem = o->prev; | |
265a9e55 | 1820 | if (!NILP (tem)) |
7ab12479 JB |
1821 | XWINDOW (tem)->next = replacement; |
1822 | ||
1823 | p->parent = tem = o->parent; | |
265a9e55 | 1824 | if (!NILP (tem)) |
7ab12479 JB |
1825 | { |
1826 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1827 | XWINDOW (tem)->vchild = replacement; | |
1828 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1829 | XWINDOW (tem)->hchild = replacement; | |
1830 | } | |
1831 | ||
1832 | /*** Here, if replacement is a vertical combination | |
1833 | and so is its new parent, we should make replacement's | |
1834 | children be children of that parent instead. ***/ | |
1835 | } | |
1836 | ||
a7ca3326 | 1837 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", |
8fef9de1 MR |
1838 | doc: /* Remove WINDOW from its frame. |
1839 | WINDOW defaults to the selected window. Return nil. | |
1840 | Signal an error when WINDOW is the only window on its frame. */) | |
5842a27b | 1841 | (register Lisp_Object window) |
543f5fb1 | 1842 | { |
eeca6f6f SM |
1843 | struct frame *f; |
1844 | if (NILP (window)) | |
1845 | window = selected_window; | |
dbf64827 JB |
1846 | else |
1847 | CHECK_LIVE_WINDOW (window); | |
1848 | ||
eeca6f6f | 1849 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
543f5fb1 RS |
1850 | delete_window (window); |
1851 | ||
eeca6f6f | 1852 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1853 | |
1854 | return Qnil; | |
1855 | } | |
1856 | ||
2f7c71a1 | 1857 | static void |
971de7fb | 1858 | delete_window (register Lisp_Object window) |
7ab12479 JB |
1859 | { |
1860 | register Lisp_Object tem, parent, sib; | |
1861 | register struct window *p; | |
1862 | register struct window *par; | |
951f9df5 | 1863 | struct frame *f; |
7ab12479 | 1864 | |
605be8af JB |
1865 | /* Because this function is called by other C code on non-leaf |
1866 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1867 | so we can't decode_window here. */ | |
eeca6f6f | 1868 | CHECK_WINDOW (window); |
7ab12479 | 1869 | p = XWINDOW (window); |
605be8af | 1870 | |
0d384044 | 1871 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1872 | if (NILP (p->buffer) |
1873 | && NILP (p->hchild) | |
1874 | && NILP (p->vchild)) | |
296b535c | 1875 | return; |
605be8af | 1876 | |
7ab12479 | 1877 | parent = p->parent; |
265a9e55 | 1878 | if (NILP (parent)) |
7ab12479 JB |
1879 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1880 | par = XWINDOW (parent); | |
1881 | ||
1882 | windows_or_buffers_changed++; | |
67492200 | 1883 | Vwindow_list = Qnil; |
951f9df5 GM |
1884 | f = XFRAME (WINDOW_FRAME (p)); |
1885 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1886 | |
605be8af JB |
1887 | /* Are we trying to delete any frame's selected window? */ |
1888 | { | |
192c3131 | 1889 | Lisp_Object swindow, pwindow; |
605be8af | 1890 | |
0def0403 RS |
1891 | /* See if the frame's selected window is either WINDOW |
1892 | or any subwindow of it, by finding all that window's parents | |
1893 | and comparing each one with WINDOW. */ | |
192c3131 | 1894 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1895 | |
192c3131 | 1896 | while (1) |
0def0403 | 1897 | { |
192c3131 RS |
1898 | pwindow = swindow; |
1899 | while (!NILP (pwindow)) | |
1900 | { | |
1901 | if (EQ (window, pwindow)) | |
1902 | break; | |
1903 | pwindow = XWINDOW (pwindow)->parent; | |
1904 | } | |
1905 | ||
1906 | /* If the window being deleted is not a parent of SWINDOW, | |
1907 | then SWINDOW is ok as the new selected window. */ | |
1908 | if (!EQ (window, pwindow)) | |
0def0403 | 1909 | break; |
192c3131 | 1910 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1911 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1912 | |
1913 | /* If we get back to the frame's selected window, | |
1914 | it means there was no acceptable alternative, | |
1915 | so we cannot delete. */ | |
1916 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1917 | error ("Cannot delete window"); | |
0def0403 RS |
1918 | } |
1919 | ||
192c3131 RS |
1920 | /* If we need to change SWINDOW, do it. */ |
1921 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1922 | { |
605be8af JB |
1923 | /* If we're about to delete the selected window on the |
1924 | selected frame, then we should use Fselect_window to select | |
1925 | the new window. On the other hand, if we're about to | |
1926 | delete the selected window on any other frame, we shouldn't do | |
1927 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1928 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1929 | Fselect_window (swindow, Qnil); |
605be8af | 1930 | else |
192c3131 | 1931 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1932 | } |
1933 | } | |
7ab12479 | 1934 | |
0d384044 RS |
1935 | /* Now we know we can delete this one. */ |
1936 | window_deletion_count++; | |
1937 | ||
7ab12479 JB |
1938 | tem = p->buffer; |
1939 | /* tem is null for dummy parent windows | |
1940 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1941 | if (!NILP (tem)) |
7ab12479 JB |
1942 | { |
1943 | unshow_buffer (p); | |
2d0834cc SM |
1944 | unchain_marker (XMARKER (p->pointm)); |
1945 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1946 | } |
1947 | ||
05e71564 GM |
1948 | /* Free window glyph matrices. It is sure that they are allocated |
1949 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1950 | events and other events that access glyph matrices are not | |
1951 | processed while we are changing them. */ | |
1952 | BLOCK_INPUT; | |
951f9df5 | 1953 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1954 | |
7ab12479 | 1955 | tem = p->next; |
265a9e55 | 1956 | if (!NILP (tem)) |
7ab12479 JB |
1957 | XWINDOW (tem)->prev = p->prev; |
1958 | ||
1959 | tem = p->prev; | |
265a9e55 | 1960 | if (!NILP (tem)) |
7ab12479 JB |
1961 | XWINDOW (tem)->next = p->next; |
1962 | ||
1963 | if (EQ (window, par->hchild)) | |
1964 | par->hchild = p->next; | |
1965 | if (EQ (window, par->vchild)) | |
1966 | par->vchild = p->next; | |
1967 | ||
1968 | /* Find one of our siblings to give our space to. */ | |
1969 | sib = p->prev; | |
265a9e55 | 1970 | if (NILP (sib)) |
7ab12479 JB |
1971 | { |
1972 | /* If p gives its space to its next sibling, that sibling needs | |
1973 | to have its top/left side pulled back to where p's is. | |
1974 | set_window_{height,width} will re-position the sibling's | |
1975 | children. */ | |
1976 | sib = p->next; | |
949cf20f KS |
1977 | XWINDOW (sib)->top_line = p->top_line; |
1978 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1979 | } |
1980 | ||
1981 | /* Stretch that sibling. */ | |
265a9e55 | 1982 | if (!NILP (par->vchild)) |
7ab12479 | 1983 | set_window_height (sib, |
949cf20f | 1984 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1985 | 1); |
265a9e55 | 1986 | if (!NILP (par->hchild)) |
7ab12479 | 1987 | set_window_width (sib, |
949cf20f | 1988 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1989 | 1); |
1990 | ||
1991 | /* If parent now has only one child, | |
1992 | put the child into the parent's place. */ | |
7ab12479 | 1993 | tem = par->hchild; |
265a9e55 | 1994 | if (NILP (tem)) |
7ab12479 | 1995 | tem = par->vchild; |
5494d7bc | 1996 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1997 | replace_window (parent, tem); |
5494d7bc JD |
1998 | par = XWINDOW (tem); |
1999 | } | |
605be8af JB |
2000 | |
2001 | /* Since we may be deleting combination windows, we must make sure that | |
2002 | not only p but all its children have been marked as deleted. */ | |
2003 | if (! NILP (p->hchild)) | |
2004 | delete_all_subwindows (XWINDOW (p->hchild)); | |
2005 | else if (! NILP (p->vchild)) | |
2006 | delete_all_subwindows (XWINDOW (p->vchild)); | |
2007 | ||
2008 | /* Mark this window as deleted. */ | |
2009 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 2010 | |
5494d7bc JD |
2011 | if (! NILP (par->parent)) |
2012 | par = XWINDOW (par->parent); | |
2013 | ||
2014 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
2015 | one of them. */ | |
ae12ecd7 | 2016 | |
5494d7bc JD |
2017 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
2018 | { | |
2019 | p = XWINDOW (par->vchild); | |
2020 | par->vchild = p->vchild; | |
2021 | tem = p->vchild; | |
2022 | } | |
2023 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
2024 | { | |
2025 | p = XWINDOW (par->hchild); | |
2026 | par->hchild = p->hchild; | |
2027 | tem = p->hchild; | |
2028 | } | |
2029 | else | |
2030 | p = 0; | |
2031 | ||
2032 | if (p) | |
2033 | { | |
2034 | while (! NILP (tem)) { | |
2035 | XWINDOW (tem)->parent = p->parent; | |
2036 | if (NILP (XWINDOW (tem)->next)) | |
2037 | break; | |
2038 | tem = XWINDOW (tem)->next; | |
2039 | } | |
2040 | if (! NILP (tem)) { | |
2041 | /* The next of the v/hchild we are removing is now the next of the | |
2042 | last child for the v/hchild: | |
2043 | Before v/hchild -> v/hchild -> next1 -> next2 | |
2044 | | | |
2045 | -> next3 | |
2046 | After: v/hchild -> next1 -> next2 -> next3 | |
2047 | */ | |
2048 | XWINDOW (tem)->next = p->next; | |
2049 | if (! NILP (p->next)) | |
2050 | XWINDOW (p->next)->prev = tem; | |
2051 | } | |
2052 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
2053 | } | |
2054 | ||
2055 | ||
5500c422 | 2056 | /* Adjust glyph matrices. */ |
951f9df5 | 2057 | adjust_glyphs (f); |
05e71564 | 2058 | UNBLOCK_INPUT; |
7ab12479 | 2059 | } |
67492200 GM |
2060 | |
2061 | ||
7ab12479 | 2062 | \f |
67492200 GM |
2063 | /*********************************************************************** |
2064 | Window List | |
2065 | ***********************************************************************/ | |
2066 | ||
f95464e4 GM |
2067 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2068 | pointer. This is a callback function for foreach_window, used in | |
2069 | function window_list. */ | |
67492200 GM |
2070 | |
2071 | static int | |
971de7fb | 2072 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2073 | { |
f95464e4 | 2074 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2075 | Lisp_Object window; |
2076 | XSETWINDOW (window, w); | |
212116d6 | 2077 | *list = Fcons (window, *list); |
67492200 GM |
2078 | return 1; |
2079 | } | |
2080 | ||
2081 | ||
2082 | /* Return a list of all windows, for use by next_window. If | |
2083 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2084 | list, cache it in Vwindow_list, and return that. */ | |
2085 | ||
2086 | static Lisp_Object | |
971de7fb | 2087 | window_list (void) |
67492200 GM |
2088 | { |
2089 | if (!CONSP (Vwindow_list)) | |
2090 | { | |
2091 | Lisp_Object tail; | |
212116d6 | 2092 | |
67492200 GM |
2093 | Vwindow_list = Qnil; |
2094 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
2095 | { |
2096 | Lisp_Object args[2]; | |
2097 | ||
2098 | /* We are visiting windows in canonical order, and add | |
2099 | new windows at the front of args[1], which means we | |
2100 | have to reverse this list at the end. */ | |
2101 | args[1] = Qnil; | |
2102 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
2103 | args[0] = Vwindow_list; | |
2104 | args[1] = Fnreverse (args[1]); | |
2105 | Vwindow_list = Fnconc (2, args); | |
2106 | } | |
67492200 | 2107 | } |
177c0ea7 | 2108 | |
67492200 GM |
2109 | return Vwindow_list; |
2110 | } | |
2111 | ||
2112 | ||
118ea242 GM |
2113 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2114 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2115 | |
118ea242 GM |
2116 | MINIBUF t means WINDOW may be minibuffer windows. |
2117 | `lambda' means WINDOW may not be a minibuffer window. | |
2118 | a window means a specific minibuffer window | |
67492200 | 2119 | |
118ea242 GM |
2120 | ALL_FRAMES t means search all frames, |
2121 | nil means search just current frame, | |
aa248733 MS |
2122 | `visible' means search just visible frames on the |
2123 | current terminal, | |
2124 | 0 means search visible and iconified frames on the | |
2125 | current terminal, | |
118ea242 GM |
2126 | a window means search the frame that window belongs to, |
2127 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2128 | |
2129 | static int | |
971de7fb | 2130 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2131 | { |
2132 | struct window *w = XWINDOW (window); | |
2133 | struct frame *f = XFRAME (w->frame); | |
2134 | int candidate_p = 1; | |
2135 | ||
2136 | if (!BUFFERP (w->buffer)) | |
2137 | candidate_p = 0; | |
2138 | else if (MINI_WINDOW_P (w) | |
2139 | && (EQ (minibuf, Qlambda) | |
2140 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2141 | { | |
2142 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2143 | If it is a window, consider only that one. */ | |
2144 | candidate_p = 0; | |
2145 | } | |
118ea242 GM |
2146 | else if (EQ (all_frames, Qt)) |
2147 | candidate_p = 1; | |
67492200 | 2148 | else if (NILP (all_frames)) |
118ea242 GM |
2149 | { |
2150 | xassert (WINDOWP (owindow)); | |
2151 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
2152 | } | |
67492200 GM |
2153 | else if (EQ (all_frames, Qvisible)) |
2154 | { | |
2155 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
2156 | candidate_p = FRAME_VISIBLE_P (f) |
2157 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2158 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
2159 | ||
67492200 GM |
2160 | } |
2161 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2162 | { | |
2163 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2164 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2165 | #ifdef HAVE_X_WINDOWS | |
2166 | /* Yuck!! If we've just created the frame and the | |
2167 | window-manager requested the user to place it | |
2168 | manually, the window may still not be considered | |
2169 | `visible'. I'd argue it should be at least | |
2170 | something like `iconified', but don't know how to do | |
2171 | that yet. --Stef */ | |
2172 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2173 | && !f->output_data.x->has_been_visible) | |
2174 | #endif | |
de509a60 SM |
2175 | ) |
2176 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2177 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 2178 | } |
67492200 GM |
2179 | else if (WINDOWP (all_frames)) |
2180 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
2181 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
2182 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
2183 | else if (FRAMEP (all_frames)) |
2184 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
2185 | |
2186 | return candidate_p; | |
2187 | } | |
2188 | ||
2189 | ||
2190 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2191 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2192 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2193 | |
2194 | static void | |
971de7fb | 2195 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
2196 | { |
2197 | if (NILP (*window)) | |
2198 | *window = selected_window; | |
2199 | else | |
b7826503 | 2200 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 2201 | |
67492200 GM |
2202 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2203 | does. */ | |
2204 | if (NILP (*minibuf)) | |
2205 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2206 | else if (!EQ (*minibuf, Qt)) | |
2207 | *minibuf = Qlambda; | |
177c0ea7 | 2208 | |
67492200 GM |
2209 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2210 | => count none of them, or a specific minibuffer window (the | |
2211 | active one) to count. */ | |
2212 | ||
2213 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2214 | if (NILP (*all_frames)) | |
2215 | *all_frames = (!EQ (*minibuf, Qlambda) | |
2216 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
2217 | : Qnil); | |
2218 | else if (EQ (*all_frames, Qvisible)) | |
2219 | ; | |
0f8fe9a2 | 2220 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2221 | ; |
2222 | else if (FRAMEP (*all_frames)) | |
2223 | ; | |
2224 | else if (!EQ (*all_frames, Qt)) | |
2225 | *all_frames = Qnil; | |
67492200 GM |
2226 | } |
2227 | ||
2228 | ||
ab6d1131 | 2229 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2230 | of windows. NEXT_P non-zero means return the next window. See the |
2231 | documentation string of next-window for the meaning of MINIBUF and | |
2232 | ALL_FRAMES. */ | |
2233 | ||
2234 | static Lisp_Object | |
971de7fb | 2235 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2236 | { |
2237 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2238 | |
67492200 GM |
2239 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2240 | return the first window on the frame. */ | |
2241 | if (FRAMEP (all_frames) | |
2242 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
2243 | return Fframe_first_window (all_frames); | |
177c0ea7 | 2244 | |
212116d6 | 2245 | if (next_p) |
67492200 GM |
2246 | { |
2247 | Lisp_Object list; | |
177c0ea7 | 2248 | |
67492200 GM |
2249 | /* Find WINDOW in the list of all windows. */ |
2250 | list = Fmemq (window, window_list ()); | |
2251 | ||
2252 | /* Scan forward from WINDOW to the end of the window list. */ | |
2253 | if (CONSP (list)) | |
2254 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2255 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2256 | break; |
2257 | ||
2258 | /* Scan from the start of the window list up to WINDOW. */ | |
2259 | if (!CONSP (list)) | |
2260 | for (list = Vwindow_list; | |
2261 | CONSP (list) && !EQ (XCAR (list), window); | |
2262 | list = XCDR (list)) | |
118ea242 | 2263 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2264 | break; |
2265 | ||
2266 | if (CONSP (list)) | |
2267 | window = XCAR (list); | |
2268 | } | |
2269 | else | |
2270 | { | |
2271 | Lisp_Object candidate, list; | |
177c0ea7 | 2272 | |
67492200 GM |
2273 | /* Scan through the list of windows for candidates. If there are |
2274 | candidate windows in front of WINDOW, the last one of these | |
2275 | is the one we want. If there are candidates following WINDOW | |
2276 | in the list, again the last one of these is the one we want. */ | |
2277 | candidate = Qnil; | |
2278 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2279 | { | |
2280 | if (EQ (XCAR (list), window)) | |
2281 | { | |
2282 | if (WINDOWP (candidate)) | |
2283 | break; | |
2284 | } | |
118ea242 GM |
2285 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2286 | all_frames)) | |
67492200 GM |
2287 | candidate = XCAR (list); |
2288 | } | |
2289 | ||
2290 | if (WINDOWP (candidate)) | |
2291 | window = candidate; | |
2292 | } | |
2293 | ||
2294 | return window; | |
2295 | } | |
7ab12479 | 2296 | |
7ab12479 | 2297 | |
a7ca3326 | 2298 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
2299 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
2300 | WINDOW defaults to the selected window. The optional arguments | |
2301 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 2302 | |
ab6d1131 MR |
2303 | MINIBUF t means consider the minibuffer window even if the |
2304 | minibuffer is not active. MINIBUF nil or omitted means consider | |
2305 | the minibuffer window only if the minibuffer is active. Any | |
2306 | other value means do not consider the minibuffer window even if | |
2307 | the minibuffer is active. | |
fdb82f93 PJ |
2308 | |
2309 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
2310 | is active, all windows on all frames that share that minibuffer |
2311 | are considered too. Therefore, if you are using a separate | |
2312 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
2313 | counts, `next-window' considers the windows in the frame from | |
2314 | which you entered the minibuffer, as well as the minibuffer | |
2315 | window. | |
2316 | ||
2317 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
2318 | frame, plus the minibuffer window if specified by the MINIBUF | |
2319 | argument, see above. If the minibuffer counts, consider all | |
2320 | windows on all frames that share that minibuffer too. | |
2321 | ALL-FRAMES t means consider all windows on all existing frames. | |
2322 | ALL-FRAMES `visible' means consider all windows on all visible | |
aa248733 | 2323 | frames on the current terminal. |
ab6d1131 | 2324 | ALL-FRAMES 0 means consider all windows on all visible and |
aa248733 | 2325 | iconified frames on the current terminal. |
ab6d1131 MR |
2326 | ALL-FRAMES a frame means consider all windows on that frame only. |
2327 | Anything else means consider all windows on WINDOW's frame and no | |
2328 | others. | |
fdb82f93 PJ |
2329 | |
2330 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2331 | `next-window' to iterate through the entire cycle of acceptable | |
2332 | windows, eventually ending up back at the window you started with. | |
2333 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2334 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2335 | { |
67492200 | 2336 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2337 | } |
2338 | ||
67492200 | 2339 | |
26f6279d | 2340 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
2341 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
2342 | WINDOW defaults to the selected window. The optional arguments | |
2343 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
2344 | For the precise meaning of these arguments see `next-window'. | |
2345 | ||
2346 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2347 | use `previous-window' to iterate through the entire cycle of | |
2348 | acceptable windows, eventually ending up back at the window you | |
2349 | started with. `next-window' traverses the same cycle, in the | |
2350 | reverse order. */) | |
5842a27b | 2351 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2352 | { |
67492200 | 2353 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2354 | } |
2355 | ||
67492200 | 2356 | |
abde8f8c MR |
2357 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2358 | doc: /* Return a list of all live windows. | |
2359 | WINDOW specifies the first window to list and defaults to the selected | |
2360 | window. | |
2361 | ||
2362 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2363 | window only if the minibuffer is active. MINIBUF t means consider the | |
2364 | minibuffer window even if the minibuffer is not active. Any other value | |
2365 | means do not consider the minibuffer window even if the minibuffer is | |
2366 | active. | |
2367 | ||
2368 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2369 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2370 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2371 | frames that share that minibuffer too. The following non-nil values of | |
2372 | ALL-FRAMES have special meanings: | |
2373 | ||
2374 | - t means consider all windows on all existing frames. | |
2375 | ||
2376 | - `visible' means consider all windows on all visible frames. | |
2377 | ||
2378 | - 0 (the number zero) means consider all windows on all visible and | |
2379 | iconified frames. | |
2380 | ||
2381 | - A frame means consider all windows on that frame only. | |
2382 | ||
2383 | Anything else means consider all windows on WINDOW's frame and no | |
2384 | others. | |
2385 | ||
2386 | If WINDOW is not on the list of windows returned, some other window will | |
2387 | be listed first but no error is signalled. */) | |
2388 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) | |
2389 | { | |
2390 | return window_list_1 (window, minibuf, all_frames); | |
2391 | } | |
2392 | ||
2393 | ||
62c07cc7 | 2394 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2395 | doc: /* Select another window in cyclic ordering of windows. |
2396 | COUNT specifies the number of windows to skip, starting with the | |
2397 | selected window, before making the selection. If COUNT is | |
2398 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2399 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2400 | window, so select the selected window. In an interactive call, | |
2401 | COUNT is the numeric prefix argument. Return nil. | |
2402 | ||
2403 | This function uses `next-window' for finding the window to select. | |
2404 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2405 | but the MINIBUF argument of `next-window' is always effectively | |
2406 | nil. */) | |
5842a27b | 2407 | (Lisp_Object count, Lisp_Object all_frames) |
7ab12479 | 2408 | { |
67492200 GM |
2409 | Lisp_Object window; |
2410 | int i; | |
7ab12479 | 2411 | |
ab6d1131 | 2412 | CHECK_NUMBER (count); |
67492200 | 2413 | window = selected_window; |
177c0ea7 | 2414 | |
ab6d1131 | 2415 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2416 | window = Fnext_window (window, Qnil, all_frames); |
2417 | for (; i < 0; ++i) | |
2418 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2419 | |
14d87dc9 | 2420 | Fselect_window (window, Qnil); |
7ab12479 JB |
2421 | return Qnil; |
2422 | } | |
67492200 GM |
2423 | |
2424 | ||
ab6d1131 | 2425 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2426 | for `next-window'. */ |
2427 | ||
2428 | static Lisp_Object | |
971de7fb | 2429 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2430 | { |
403de3b4 | 2431 | Lisp_Object tail, list, rest; |
67492200 GM |
2432 | |
2433 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2434 | list = Qnil; | |
177c0ea7 | 2435 | |
67492200 | 2436 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2437 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2438 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2439 | |
403de3b4 RS |
2440 | /* Rotate the list to start with WINDOW. */ |
2441 | list = Fnreverse (list); | |
2442 | rest = Fmemq (window, list); | |
2443 | if (!NILP (rest) && !EQ (rest, list)) | |
2444 | { | |
1725a7c9 | 2445 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2446 | ; |
2447 | XSETCDR (tail, Qnil); | |
2448 | list = nconc2 (rest, list); | |
2449 | } | |
2450 | return list; | |
67492200 GM |
2451 | } |
2452 | ||
2453 | ||
abde8f8c MR |
2454 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2455 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2456 | FRAME nil or omitted means use the selected frame. | |
2457 | WINDOW nil or omitted means use the selected window. | |
2458 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2459 | MINIBUF nil or omitted means include the minibuffer window only | |
2460 | if it's active. | |
2461 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2462 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2463 | { | |
2464 | if (NILP (window)) | |
2465 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; | |
2466 | CHECK_WINDOW (window); | |
2467 | if (NILP (frame)) | |
2468 | frame = selected_frame; | |
2469 | ||
2470 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2471 | error ("Window is on a different frame"); | |
2472 | ||
2473 | return window_list_1 (window, minibuf, frame); | |
2474 | } | |
2475 | ||
2476 | ||
7ab12479 JB |
2477 | \f |
2478 | /* Look at all windows, performing an operation specified by TYPE | |
2479 | with argument OBJ. | |
75d8f668 | 2480 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2481 | Qnil, look at just the selected frame; |
89bca612 | 2482 | Qvisible, look at visible frames; |
75d8f668 | 2483 | a frame, just look at windows on that frame. |
85fe3b5e | 2484 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2485 | |
2486 | enum window_loop | |
2487 | { | |
2488 | WINDOW_LOOP_UNUSED, | |
2489 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2490 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2491 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2492 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2493 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2494 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2495 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2496 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2497 | }; |
2498 | ||
2499 | static Lisp_Object | |
971de7fb | 2500 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2501 | { |
118ea242 GM |
2502 | Lisp_Object window, windows, best_window, frame_arg; |
2503 | struct frame *f; | |
ffdc852d | 2504 | struct gcpro gcpro1; |
177c0ea7 | 2505 | |
44fa5b1e JB |
2506 | /* If we're only looping through windows on a particular frame, |
2507 | frame points to that frame. If we're looping through windows | |
2508 | on all frames, frame is 0. */ | |
2509 | if (FRAMEP (frames)) | |
118ea242 | 2510 | f = XFRAME (frames); |
44fa5b1e | 2511 | else if (NILP (frames)) |
118ea242 | 2512 | f = SELECTED_FRAME (); |
7ab12479 | 2513 | else |
118ea242 | 2514 | f = NULL; |
177c0ea7 | 2515 | |
118ea242 | 2516 | if (f) |
89bca612 | 2517 | frame_arg = Qlambda; |
0f8fe9a2 | 2518 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2519 | frame_arg = frames; |
89bca612 RS |
2520 | else if (EQ (frames, Qvisible)) |
2521 | frame_arg = frames; | |
118ea242 GM |
2522 | else |
2523 | frame_arg = Qt; | |
7ab12479 | 2524 | |
89bca612 RS |
2525 | /* frame_arg is Qlambda to stick to one frame, |
2526 | Qvisible to consider all visible frames, | |
2527 | or Qt otherwise. */ | |
2528 | ||
7ab12479 | 2529 | /* Pick a window to start with. */ |
017b2bad | 2530 | if (WINDOWP (obj)) |
118ea242 GM |
2531 | window = obj; |
2532 | else if (f) | |
2533 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2534 | else |
118ea242 | 2535 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2536 | |
cd2904bd | 2537 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2538 | GCPRO1 (windows); |
7ab12479 | 2539 | best_window = Qnil; |
118ea242 | 2540 | |
e67a1dea | 2541 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2542 | { |
118ea242 | 2543 | struct window *w; |
177c0ea7 | 2544 | |
118ea242 GM |
2545 | window = XCAR (windows); |
2546 | w = XWINDOW (window); | |
177c0ea7 | 2547 | |
118ea242 GM |
2548 | /* Note that we do not pay attention here to whether the frame |
2549 | is visible, since Fwindow_list skips non-visible frames if | |
2550 | that is desired, under the control of frame_arg. */ | |
2551 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2552 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2553 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2554 | || (mini && minibuf_level > 0)) |
2555 | switch (type) | |
2556 | { | |
2557 | case GET_BUFFER_WINDOW: | |
118ea242 | 2558 | if (EQ (w->buffer, obj) |
5c204627 RS |
2559 | /* Don't find any minibuffer window |
2560 | except the one that is currently in use. */ | |
118ea242 GM |
2561 | && (MINI_WINDOW_P (w) |
2562 | ? EQ (window, minibuf_window) | |
2563 | : 1)) | |
2564 | { | |
5ddc1b75 GM |
2565 | if (NILP (best_window)) |
2566 | best_window = window; | |
2567 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2568 | /* Prefer to return selected-window. */ |
2569 | RETURN_UNGCPRO (window); | |
2570 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2571 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2572 | best_window = window; |
118ea242 | 2573 | } |
7ab12479 JB |
2574 | break; |
2575 | ||
2576 | case GET_LRU_WINDOW: | |
20b69789 SM |
2577 | /* `obj' is an integer encoding a bitvector. |
2578 | `obj & 1' means consider only full-width windows. | |
2579 | `obj & 2' means consider also dedicated windows. */ | |
2580 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2581 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2582 | /* Minibuffer windows are always ignored. */ |
2583 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2584 | break; |
265a9e55 | 2585 | if (NILP (best_window) |
7ab12479 | 2586 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2587 | > XFASTINT (w->use_time))) |
2588 | best_window = window; | |
7ab12479 JB |
2589 | break; |
2590 | ||
2591 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2592 | if (!EQ (window, obj)) |
2593 | Fdelete_window (window); | |
7ab12479 JB |
2594 | break; |
2595 | ||
2596 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2597 | if (EQ (w->buffer, obj)) |
7ab12479 | 2598 | { |
4554d213 | 2599 | struct frame *fr = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2600 | |
2601 | /* If this window is dedicated, and in a frame of its own, | |
2602 | kill the frame. */ | |
4554d213 | 2603 | if (EQ (window, FRAME_ROOT_WINDOW (fr)) |
118ea242 | 2604 | && !NILP (w->dedicated) |
4554d213 | 2605 | && other_visible_frames (fr)) |
7ab12479 | 2606 | { |
3548e138 RS |
2607 | /* Skip the other windows on this frame. |
2608 | There might be one, the minibuffer! */ | |
118ea242 GM |
2609 | while (CONSP (XCDR (windows)) |
2610 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2611 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2612 | windows = XCDR (windows); | |
177c0ea7 | 2613 | |
3548e138 | 2614 | /* Now we can safely delete the frame. */ |
56f2de10 | 2615 | delete_frame (w->frame, Qnil); |
118ea242 GM |
2616 | } |
2617 | else if (NILP (w->parent)) | |
2618 | { | |
2619 | /* If we're deleting the buffer displayed in the | |
2620 | only window on the frame, find a new buffer to | |
2621 | display there. */ | |
2622 | Lisp_Object buffer; | |
2623 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1c33c906 MR |
2624 | /* Reset dedicated state of window. */ |
2625 | w->dedicated = Qnil; | |
949cf20f | 2626 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2627 | if (EQ (window, selected_window)) |
2628 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2629 | } |
2630 | else | |
118ea242 | 2631 | Fdelete_window (window); |
7ab12479 JB |
2632 | } |
2633 | break; | |
2634 | ||
2635 | case GET_LARGEST_WINDOW: | |
20b69789 | 2636 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2637 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2638 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2639 | break; |
177c0ea7 | 2640 | |
c930dfab | 2641 | if (NILP (best_window)) |
118ea242 | 2642 | best_window = window; |
c930dfab GM |
2643 | else |
2644 | { | |
2645 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2646 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2647 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2648 | best_window = window; |
2649 | } | |
7ab12479 JB |
2650 | } |
2651 | break; | |
2652 | ||
2653 | case UNSHOW_BUFFER: | |
118ea242 | 2654 | if (EQ (w->buffer, obj)) |
7ab12479 | 2655 | { |
118ea242 | 2656 | Lisp_Object buffer; |
4554d213 | 2657 | struct frame *fr = XFRAME (w->frame); |
177c0ea7 | 2658 | |
7ab12479 | 2659 | /* Find another buffer to show in this window. */ |
118ea242 | 2660 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2661 | |
38ab08d1 RS |
2662 | /* If this window is dedicated, and in a frame of its own, |
2663 | kill the frame. */ | |
4554d213 | 2664 | if (EQ (window, FRAME_ROOT_WINDOW (fr)) |
118ea242 | 2665 | && !NILP (w->dedicated) |
4554d213 | 2666 | && other_visible_frames (fr)) |
45945a7b RS |
2667 | { |
2668 | /* Skip the other windows on this frame. | |
2669 | There might be one, the minibuffer! */ | |
118ea242 GM |
2670 | while (CONSP (XCDR (windows)) |
2671 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2672 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2673 | windows = XCDR (windows); | |
177c0ea7 | 2674 | |
45945a7b | 2675 | /* Now we can safely delete the frame. */ |
56f2de10 | 2676 | delete_frame (w->frame, Qnil); |
45945a7b | 2677 | } |
a5731348 SM |
2678 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2679 | { | |
4554d213 PE |
2680 | Lisp_Object window_to_delete; |
2681 | XSETWINDOW (window_to_delete, w); | |
a5731348 SM |
2682 | /* If this window is dedicated and not the only window |
2683 | in its frame, then kill it. */ | |
4554d213 | 2684 | Fdelete_window (window_to_delete); |
a5731348 | 2685 | } |
38ab08d1 | 2686 | else |
38ab08d1 RS |
2687 | { |
2688 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2689 | w->dedicated = Qnil; |
949cf20f | 2690 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2691 | if (EQ (window, selected_window)) |
2692 | Fset_buffer (w->buffer); | |
38ab08d1 | 2693 | } |
7ab12479 JB |
2694 | } |
2695 | break; | |
3f8ab7bd | 2696 | |
6b61353c KH |
2697 | case REDISPLAY_BUFFER_WINDOWS: |
2698 | if (EQ (w->buffer, obj)) | |
2699 | { | |
2700 | mark_window_display_accurate (window, 0); | |
2701 | w->update_mode_line = Qt; | |
2702 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2703 | ++update_mode_lines; | |
2704 | best_window = window; | |
2705 | } | |
2706 | break; | |
2707 | ||
3f8ab7bd RS |
2708 | /* Check for a window that has a killed buffer. */ |
2709 | case CHECK_ALL_WINDOWS: | |
118ea242 | 2710 | if (! NILP (w->buffer) |
4b4deea2 | 2711 | && NILP (BVAR (XBUFFER (w->buffer), name))) |
3f8ab7bd | 2712 | abort (); |
118ea242 | 2713 | break; |
6bbd7a29 GM |
2714 | |
2715 | case WINDOW_LOOP_UNUSED: | |
2716 | break; | |
7ab12479 | 2717 | } |
7ab12479 | 2718 | } |
7ab12479 | 2719 | |
118ea242 | 2720 | UNGCPRO; |
7ab12479 | 2721 | return best_window; |
37962e60 | 2722 | } |
605be8af | 2723 | |
3f8ab7bd RS |
2724 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2725 | ||
e3b27b31 | 2726 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2727 | void |
971de7fb | 2728 | check_all_windows (void) |
3f8ab7bd RS |
2729 | { |
2730 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2731 | } | |
2732 | ||
a048073e MR |
2733 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
2734 | doc: /* Return WINDOW's use time. | |
2735 | WINDOW defaults to the selected window. The window with the highest use | |
2736 | time is the most recently selected one. The window with the lowest use | |
2737 | time is the least recently selected one. */) | |
2738 | (Lisp_Object window) | |
2739 | { | |
2740 | return decode_window (window)->use_time; | |
2741 | } | |
2742 | ||
3cbb13c8 | 2743 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2744 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2745 | \(LRU means Least Recently Used.) |
2746 | ||
6b61353c | 2747 | Return a full-width window if possible. |
c2755926 | 2748 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2749 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2750 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2751 | If optional argument FRAME is `visible', search all visible frames. |
2752 | If FRAME is 0, search all visible and iconified frames. | |
2753 | If FRAME is t, search all frames. | |
2754 | If FRAME is nil, search only the selected frame. | |
2755 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2756 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 JB |
2757 | { |
2758 | register Lisp_Object w; | |
2759 | /* First try for a window that is full-width */ | |
20b69789 SM |
2760 | w = window_loop (GET_LRU_WINDOW, |
2761 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2762 | 0, frame); | |
265a9e55 | 2763 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2764 | return w; |
2765 | /* If none of them, try the rest */ | |
20b69789 SM |
2766 | return window_loop (GET_LRU_WINDOW, |
2767 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2768 | 0, frame); | |
7ab12479 JB |
2769 | } |
2770 | ||
3cbb13c8 | 2771 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2772 | doc: /* Return the largest window in area. |
c2755926 | 2773 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2774 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2775 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2776 | If optional argument FRAME is `visible', search all visible frames. |
2777 | If FRAME is 0, search all visible and iconified frames. | |
2778 | If FRAME is t, search all frames. | |
2779 | If FRAME is nil, search only the selected frame. | |
2780 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2781 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 | 2782 | { |
20b69789 | 2783 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2784 | frame); |
7ab12479 JB |
2785 | } |
2786 | ||
a7ca3326 | 2787 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 MR |
2788 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
2789 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the | |
2790 | current buffer. | |
fdb82f93 PJ |
2791 | If optional argument FRAME is `visible', search all visible frames. |
2792 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2793 | If FRAME is t, search all frames. | |
2794 | If FRAME is nil, search only the selected frame. | |
2795 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2796 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2797 | { |
fec89261 MR |
2798 | Lisp_Object buffer; |
2799 | ||
2800 | if (NILP (buffer_or_name)) | |
2801 | buffer = Fcurrent_buffer (); | |
2802 | else | |
2803 | buffer = Fget_buffer (buffer_or_name); | |
2804 | ||
017b2bad | 2805 | if (BUFFERP (buffer)) |
44fa5b1e | 2806 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2807 | else |
2808 | return Qnil; | |
2809 | } | |
2810 | ||
2811 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2812 | 0, 1, "", |
2813 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2814 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
2815 | This function tries to reduce display jumps by keeping the text |
2816 | previously visible in WINDOW in the same place on the frame. Doing this | |
2817 | depends on the value of (window-start WINDOW), so if calling this | |
2818 | function in a program gives strange scrolling, make sure the | |
2819 | window-start value is reasonable when this function is called. */) | |
5842a27b | 2820 | (Lisp_Object window) |
7ab12479 JB |
2821 | { |
2822 | struct window *w; | |
2452438f | 2823 | EMACS_INT startpos; |
85fe3b5e | 2824 | int top, new_top; |
7ab12479 | 2825 | |
265a9e55 | 2826 | if (NILP (window)) |
7ab12479 JB |
2827 | window = selected_window; |
2828 | else | |
b7826503 | 2829 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2830 | w = XWINDOW (window); |
a2b38b3c | 2831 | |
00d3d838 | 2832 | startpos = marker_position (w->start); |
949cf20f | 2833 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2834 | |
a2b38b3c RS |
2835 | if (MINI_WINDOW_P (w) && top > 0) |
2836 | error ("Can't expand minibuffer to full frame"); | |
2837 | ||
70728a80 | 2838 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2839 | |
00d3d838 KH |
2840 | /* Try to minimize scrolling, by setting the window start to the point |
2841 | will cause the text at the old window start to be at the same place | |
2842 | on the frame. But don't try to do this if the window start is | |
2843 | outside the visible portion (as might happen when the display is | |
2844 | not current, due to typeahead). */ | |
949cf20f | 2845 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2846 | if (new_top != top |
2847 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2848 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2849 | { | |
2850 | struct position pos; | |
2851 | struct buffer *obuf = current_buffer; | |
2852 | ||
2853 | Fset_buffer (w->buffer); | |
2854 | /* This computation used to temporarily move point, but that can | |
2855 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2856 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2857 | |
b73ea88e | 2858 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2859 | w->window_end_valid = Qnil; |
b73ea88e RS |
2860 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2861 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2862 | : Qnil); |
80622eec RS |
2863 | /* We need to do this, so that the window-scroll-functions |
2864 | get called. */ | |
4d047f50 | 2865 | w->optional_new_start = Qt; |
00d3d838 KH |
2866 | |
2867 | set_buffer_internal (obuf); | |
2868 | } | |
5500c422 | 2869 | |
7ab12479 JB |
2870 | return Qnil; |
2871 | } | |
2872 | ||
2873 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
2874 | 0, 2, "bDelete windows on (buffer): ", |
2875 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
2876 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2877 | defaults to the current buffer. | |
2878 | ||
fdb82f93 PJ |
2879 | Optional second argument FRAME controls which frames are affected. |
2880 | If optional argument FRAME is `visible', search all visible frames. | |
2881 | If FRAME is 0, search all visible and iconified frames. | |
2882 | If FRAME is nil, search all frames. | |
2883 | If FRAME is t, search only the selected frame. | |
d653c8cc | 2884 | If FRAME is a frame, search only that frame. |
fec89261 MR |
2885 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
2886 | its frame, that frame is deleted when there are other frames left. */) | |
5842a27b | 2887 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2888 | { |
fec89261 MR |
2889 | Lisp_Object buffer; |
2890 | ||
26f6279d JB |
2891 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2892 | expects. */ | |
c520265e RS |
2893 | if (NILP (frame)) |
2894 | frame = Qt; | |
2895 | else if (EQ (frame, Qt)) | |
2896 | frame = Qnil; | |
26f6279d | 2897 | |
fec89261 MR |
2898 | if (NILP (buffer_or_name)) |
2899 | buffer = Fcurrent_buffer (); | |
2900 | else | |
7ab12479 | 2901 | { |
fec89261 | 2902 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2903 | CHECK_BUFFER (buffer); |
7ab12479 | 2904 | } |
177c0ea7 | 2905 | |
fec89261 MR |
2906 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
2907 | ||
7ab12479 JB |
2908 | return Qnil; |
2909 | } | |
2910 | ||
2911 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 2912 | Sreplace_buffer_in_windows, |
fec89261 MR |
2913 | 0, 1, "bReplace buffer in windows: ", |
2914 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
2915 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2916 | defaults to the current buffer. | |
2917 | ||
2918 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
2919 | deleted. If that window is the only window on its frame, that frame is | |
2920 | deleted too when there are other frames left. If there are no other | |
2921 | frames left, some other buffer is displayed in that window. */) | |
5842a27b | 2922 | (Lisp_Object buffer_or_name) |
fec89261 MR |
2923 | { |
2924 | Lisp_Object buffer; | |
2925 | ||
2926 | if (NILP (buffer_or_name)) | |
2927 | buffer = Fcurrent_buffer (); | |
2928 | else | |
7ab12479 | 2929 | { |
fec89261 | 2930 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2931 | CHECK_BUFFER (buffer); |
7ab12479 | 2932 | } |
fec89261 MR |
2933 | |
2934 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2935 | ||
7ab12479 JB |
2936 | return Qnil; |
2937 | } | |
ff58478b RS |
2938 | |
2939 | /* Replace BUFFER with some other buffer in all windows | |
2940 | of all frames, even those on other keyboards. */ | |
2941 | ||
2942 | void | |
971de7fb | 2943 | replace_buffer_in_all_windows (Lisp_Object buffer) |
ff58478b RS |
2944 | { |
2945 | Lisp_Object tail, frame; | |
2946 | ||
ff58478b RS |
2947 | /* A single call to window_loop won't do the job |
2948 | because it only considers frames on the current keyboard. | |
2949 | So loop manually over frames, and handle each one. */ | |
2950 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2951 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2952 | } |
7ab12479 JB |
2953 | \f |
2954 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2955 | |
2956 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2957 | might crash Emacs. */ | |
5500c422 | 2958 | |
a481b3ea | 2959 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2960 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2961 | |
047aaeb9 MR |
2962 | /* For wp non-zero the total number of columns of window w. Otherwise |
2963 | the total number of lines of w. */ | |
a481b3ea | 2964 | |
047aaeb9 MR |
2965 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2966 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2967 | |
2968 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2969 | minimum allowable size. */ | |
5500c422 | 2970 | |
605be8af | 2971 | void |
971de7fb | 2972 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2973 | { |
628df3bf | 2974 | /* For height, we have to see: |
54b8bcb5 RS |
2975 | how many windows the frame has at minimum (one or two), |
2976 | and whether it has a menu bar or other special stuff at the top. */ | |
2977 | int min_height | |
2978 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2979 | ? MIN_SAFE_WINDOW_HEIGHT | |
2980 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2981 | |
5500c422 GM |
2982 | if (FRAME_TOP_MARGIN (frame) > 0) |
2983 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2984 | |
2985 | if (*rows < min_height) | |
2986 | *rows = min_height; | |
2987 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2988 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2989 | } | |
2990 | ||
233a4a2c GM |
2991 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2992 | check if W's width can be changed, otherwise check W's height. | |
2993 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2994 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2995 | either. */ | |
c1636aa6 | 2996 | |
233a4a2c | 2997 | static int |
971de7fb | 2998 | window_fixed_size_p (struct window *w, int width_p, int check_siblings_p) |
233a4a2c GM |
2999 | { |
3000 | int fixed_p; | |
3001 | struct window *c; | |
177c0ea7 | 3002 | |
233a4a2c GM |
3003 | if (!NILP (w->hchild)) |
3004 | { | |
3005 | c = XWINDOW (w->hchild); | |
177c0ea7 | 3006 | |
233a4a2c GM |
3007 | if (width_p) |
3008 | { | |
047aaeb9 | 3009 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
3010 | children are. */ |
3011 | while (c && window_fixed_size_p (c, width_p, 0)) | |
3012 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3013 | fixed_p = c == NULL; | |
3014 | } | |
3015 | else | |
3016 | { | |
047aaeb9 | 3017 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
3018 | children is. */ |
3019 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
3020 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3021 | fixed_p = c != NULL; | |
3022 | } | |
3023 | } | |
3024 | else if (!NILP (w->vchild)) | |
3025 | { | |
3026 | c = XWINDOW (w->vchild); | |
177c0ea7 | 3027 | |
233a4a2c GM |
3028 | if (width_p) |
3029 | { | |
047aaeb9 | 3030 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
3031 | children is. */ |
3032 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
3033 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3034 | fixed_p = c != NULL; | |
3035 | } | |
3036 | else | |
3037 | { | |
047aaeb9 | 3038 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
3039 | children are. */ |
3040 | while (c && window_fixed_size_p (c, width_p, 0)) | |
3041 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
3042 | fixed_p = c == NULL; | |
3043 | } | |
3044 | } | |
3045 | else if (BUFFERP (w->buffer)) | |
3046 | { | |
3df0580e AS |
3047 | struct buffer *old = current_buffer; |
3048 | Lisp_Object val; | |
177c0ea7 | 3049 | |
3df0580e AS |
3050 | current_buffer = XBUFFER (w->buffer); |
3051 | val = find_symbol_value (Qwindow_size_fixed); | |
3052 | current_buffer = old; | |
a34dfd12 | 3053 | |
3df0580e AS |
3054 | fixed_p = 0; |
3055 | if (!EQ (val, Qunbound)) | |
3056 | { | |
3057 | fixed_p = !NILP (val); | |
177c0ea7 | 3058 | |
3df0580e AS |
3059 | if (fixed_p |
3060 | && ((EQ (val, Qheight) && width_p) | |
3061 | || (EQ (val, Qwidth) && !width_p))) | |
3062 | fixed_p = 0; | |
233a4a2c GM |
3063 | } |
3064 | ||
3065 | /* Can't tell if this one is resizable without looking at | |
3066 | siblings. If all siblings are fixed-size this one is too. */ | |
3067 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
3068 | { | |
3069 | Lisp_Object child; | |
177c0ea7 | 3070 | |
9beb8baa | 3071 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
3072 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
3073 | break; | |
3074 | ||
3075 | if (NILP (child)) | |
9beb8baa | 3076 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
3077 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
3078 | break; | |
3079 | ||
3080 | if (NILP (child)) | |
3081 | fixed_p = 1; | |
3082 | } | |
3083 | } | |
3084 | else | |
3085 | fixed_p = 1; | |
3086 | ||
3087 | return fixed_p; | |
3088 | } | |
177c0ea7 | 3089 | |
047aaeb9 MR |
3090 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
3091 | the minimum width of W, WIDTH_P zero means return the minimum height | |
3092 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
3093 | return values that won't crash Emacs and don't hide components like | |
3094 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
3095 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
3096 | |
3097 | static int | |
971de7fb | 3098 | window_min_size_2 (struct window *w, int width_p, int safe_p) |
f1de8c77 | 3099 | { |
047aaeb9 MR |
3100 | /* We should consider buffer-local values of window_min_height and |
3101 | window_min_width here. */ | |
f1de8c77 | 3102 | if (width_p) |
047aaeb9 MR |
3103 | { |
3104 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 3105 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
3106 | + WINDOW_SCROLL_BAR_COLS (w)); |
3107 | ||
3108 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
3109 | } | |
f1de8c77 | 3110 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 3111 | return 1; |
f1de8c77 | 3112 | else |
047aaeb9 MR |
3113 | { |
3114 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
3115 | + ((BUFFERP (w->buffer) | |
4b4deea2 | 3116 | && !NILP (BVAR (XBUFFER (w->buffer), mode_line_format))) |
047aaeb9 | 3117 | ? 1 : 0)); |
f1de8c77 | 3118 | |
047aaeb9 MR |
3119 | return safe_p ? safe_size : max (window_min_height, safe_size); |
3120 | } | |
f1de8c77 | 3121 | } |
233a4a2c | 3122 | |
047aaeb9 MR |
3123 | /* Return minimum size of window W, not taking fixed-width windows into |
3124 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
3125 | return the minimum height. SAFE_P non-zero means ignore | |
3126 | window-min-height|width but just return values that won't crash Emacs | |
3127 | and don't hide components like fringes, scrollbars, or modelines. If | |
3128 | W is a combination window, compute the minimum size from the minimum | |
3129 | sizes of W's children. */ | |
233a4a2c GM |
3130 | |
3131 | static int | |
971de7fb | 3132 | window_min_size_1 (struct window *w, int width_p, int safe_p) |
c1636aa6 | 3133 | { |
233a4a2c | 3134 | struct window *c; |
c1636aa6 | 3135 | int size; |
177c0ea7 | 3136 | |
233a4a2c GM |
3137 | if (!NILP (w->hchild)) |
3138 | { | |
047aaeb9 | 3139 | /* W is a horizontal combination. */ |
233a4a2c GM |
3140 | c = XWINDOW (w->hchild); |
3141 | size = 0; | |
177c0ea7 | 3142 | |
233a4a2c GM |
3143 | if (width_p) |
3144 | { | |
047aaeb9 MR |
3145 | /* The minimum width of a horizontal combination is the sum of |
3146 | the minimum widths of its children. */ | |
233a4a2c GM |
3147 | while (c) |
3148 | { | |
047aaeb9 | 3149 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
3150 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3151 | } | |
3152 | } | |
3153 | else | |
3154 | { | |
047aaeb9 MR |
3155 | /* The minimum height of a horizontal combination is the |
3156 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
3157 | while (c) |
3158 | { | |
047aaeb9 | 3159 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
3160 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3161 | } | |
3162 | } | |
3163 | } | |
3164 | else if (!NILP (w->vchild)) | |
3165 | { | |
047aaeb9 | 3166 | /* W is a vertical combination. */ |
233a4a2c GM |
3167 | c = XWINDOW (w->vchild); |
3168 | size = 0; | |
177c0ea7 | 3169 | |
233a4a2c GM |
3170 | if (width_p) |
3171 | { | |
047aaeb9 MR |
3172 | /* The minimum width of a vertical combination is the maximum |
3173 | of the minimum widths of its children. */ | |
233a4a2c GM |
3174 | while (c) |
3175 | { | |
047aaeb9 | 3176 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
3177 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3178 | } | |
3179 | } | |
3180 | else | |
3181 | { | |
047aaeb9 MR |
3182 | /* The minimum height of a vertical combination is the sum of |
3183 | the minimum height of its children. */ | |
233a4a2c GM |
3184 | while (c) |
3185 | { | |
047aaeb9 | 3186 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
3187 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
3188 | } | |
3189 | } | |
3190 | } | |
c1636aa6 | 3191 | else |
047aaeb9 MR |
3192 | /* W is a leaf window. */ |
3193 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
3194 | |
3195 | return size; | |
3196 | } | |
3197 | ||
233a4a2c | 3198 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
3199 | account. WIDTH_P non-zero means return the minimum width, otherwise |
3200 | return the minimum height. SAFE_P non-zero means ignore | |
3201 | window-min-height|width but just return values that won't crash Emacs | |
3202 | and don't hide components like fringes, scrollbars, or modelines. | |
3203 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
3204 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 3205 | |
233a4a2c | 3206 | static int |
971de7fb | 3207 | window_min_size (struct window *w, int width_p, int safe_p, int ignore_fixed_p, int *fixed) |
233a4a2c GM |
3208 | { |
3209 | int size, fixed_p; | |
3210 | ||
f984d4fc GM |
3211 | if (ignore_fixed_p) |
3212 | fixed_p = 0; | |
3213 | else | |
3214 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 3215 | |
233a4a2c GM |
3216 | if (fixed) |
3217 | *fixed = fixed_p; | |
177c0ea7 | 3218 | |
233a4a2c | 3219 | if (fixed_p) |
047aaeb9 | 3220 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 3221 | else |
047aaeb9 | 3222 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 3223 | |
233a4a2c GM |
3224 | return size; |
3225 | } | |
3226 | ||
3227 | ||
79fd290e | 3228 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3229 | Return 1 if window width is ok after adjustment; 0 if window |
3230 | is still too narrow. */ | |
3231 | ||
3232 | static int | |
971de7fb | 3233 | adjust_window_margins (struct window *w) |
949cf20f KS |
3234 | { |
3235 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3236 | - WINDOW_FRINGE_COLS (w) | |
3237 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3238 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3239 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3240 | ||
3241 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3242 | return 1; | |
3243 | ||
3244 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3245 | return 0; | |
3246 | ||
3247 | /* Window's text area is too narrow, but reducing the window | |
3248 | margins will fix that. */ | |
3249 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3250 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3251 | { | |
3252 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
3253 | w->left_margin_cols = w->right_margin_cols | |
3254 | = make_number (margin_cols/2); | |
3255 | else | |
3256 | w->right_margin_cols = make_number (margin_cols); | |
3257 | } | |
3258 | else | |
3259 | w->left_margin_cols = make_number (margin_cols); | |
3260 | return 1; | |
3261 | } | |
3262 | ||
047aaeb9 MR |
3263 | /* Calculate new sizes for windows in the list FORWARD when their |
3264 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
3265 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
3266 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
3267 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
3268 | shrink columns, otherwise shrink lines. | |
6b61353c | 3269 | |
047aaeb9 MR |
3270 | SAFE_P zero means windows may be sized down to window-min-height |
3271 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
3272 | non-zero means windows may be sized down to their minimum safe sizes | |
3273 | taking into account the space needed to display modelines, fringes, | |
3274 | and scrollbars. | |
6b61353c | 3275 | |
047aaeb9 MR |
3276 | This function returns an allocated array of new sizes that the caller |
3277 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
3278 | zero. A size zero means the window shall be deleted. Array index 0 | |
3279 | refers to the first window in FORWARD, 1 to the second, and so on. | |
3280 | ||
3281 | This function resizes windows proportionally to their size. It also | |
3282 | tries to preserve smaller windows by resizing larger windows before | |
3283 | resizing any window to zero. If resize_proportionally is non-nil for | |
3284 | a specific window, it will attempt to strictly resize that window | |
3285 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 3286 | static int * |
ed3751c8 | 3287 | shrink_windows (int total, int size, int nchildren, int shrinkable, |
dd4c5104 | 3288 | int resize_fixed_p, Lisp_Object forward, int width_p, int safe_p) |
6b61353c KH |
3289 | { |
3290 | int available_resize = 0; | |
047aaeb9 | 3291 | int *new_sizes, *min_sizes; |
6b61353c KH |
3292 | struct window *c; |
3293 | Lisp_Object child; | |
3294 | int smallest = total; | |
3295 | int total_removed = 0; | |
3296 | int total_shrink = total - size; | |
3297 | int i; | |
3298 | ||
3299 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 3300 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
3301 | |
3302 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
3303 | { | |
3304 | int child_size; | |
3305 | ||
3306 | c = XWINDOW (child); | |
047aaeb9 | 3307 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 3308 | |
047aaeb9 | 3309 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
3310 | new_sizes[i] = -1; |
3311 | else | |
3312 | { | |
3313 | new_sizes[i] = child_size; | |
047aaeb9 MR |
3314 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
3315 | if (child_size > min_sizes[i] | |
3316 | && NILP (c->resize_proportionally)) | |
3317 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
3318 | } |
3319 | } | |
3320 | /* We might need to shrink some windows to zero. Find the smallest | |
3321 | windows and set them to 0 until we can fulfil the new size. */ | |
3322 | ||
3323 | while (shrinkable > 1 && size + available_resize < total) | |
3324 | { | |
3325 | for (i = 0; i < nchildren; ++i) | |
3326 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
3327 | smallest = new_sizes[i]; | |
3328 | ||
3329 | for (i = 0; i < nchildren; ++i) | |
3330 | if (new_sizes[i] == smallest) | |
3331 | { | |
3332 | /* Resize this window down to zero. */ | |
3333 | new_sizes[i] = 0; | |
047aaeb9 MR |
3334 | if (smallest > min_sizes[i]) |
3335 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
3336 | available_resize += smallest; |
3337 | --shrinkable; | |
3338 | total_removed += smallest; | |
3339 | ||
ef614e04 JD |
3340 | /* We don't know what the smallest is now. */ |
3341 | smallest = total; | |
3342 | ||
6b61353c KH |
3343 | /* Out of for, just remove one window at the time and |
3344 | check again if we have enough space. */ | |
3345 | break; | |
3346 | } | |
3347 | } | |
3348 | ||
3349 | /* Now, calculate the new sizes. Try to shrink each window | |
3350 | proportional to its size. */ | |
3351 | for (i = 0; i < nchildren; ++i) | |
3352 | { | |
047aaeb9 | 3353 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 3354 | { |
047aaeb9 MR |
3355 | int to_shrink = total_shrink * new_sizes[i] / total; |
3356 | ||
3357 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
3358 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
3359 | new_sizes[i] -= to_shrink; |
3360 | total_removed += to_shrink; | |
3361 | } | |
3362 | } | |
3363 | ||
3364 | /* Any reminder due to rounding, we just subtract from windows | |
3365 | that are left and still can be shrunk. */ | |
3366 | while (total_shrink > total_removed) | |
3367 | { | |
ef614e04 | 3368 | int nonzero_sizes = 0; |
ef614e04 JD |
3369 | |
3370 | for (i = 0; i < nchildren; ++i) | |
3371 | if (new_sizes[i] > 0) | |
c499e557 | 3372 | ++nonzero_sizes; |
c49a0495 | 3373 | |
6b61353c | 3374 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3375 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3376 | { |
3377 | --new_sizes[i]; | |
3378 | ++total_removed; | |
3379 | ||
3380 | /* Out of for, just shrink one window at the time and | |
3381 | check again if we have enough space. */ | |
3382 | break; | |
3383 | } | |
ef614e04 | 3384 | |
ef614e04 JD |
3385 | /* Special case, only one window left. */ |
3386 | if (nonzero_sizes == 1) | |
3387 | break; | |
3388 | } | |
3389 | ||
3390 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3391 | while (total_shrink < total_removed) | |
3392 | { | |
3393 | for (i = 0; i < nchildren; ++i) | |
3394 | { | |
3395 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3396 | { | |
3397 | ++new_sizes[i]; | |
3398 | --total_removed; | |
3399 | break; | |
3400 | } | |
3401 | } | |
6b61353c KH |
3402 | } |
3403 | ||
047aaeb9 MR |
3404 | xfree (min_sizes); |
3405 | ||
6b61353c KH |
3406 | return new_sizes; |
3407 | } | |
949cf20f | 3408 | |
233a4a2c | 3409 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3410 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3411 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3412 | |
3413 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3414 | they are in series. If LAST_ONLY is 1, change only the last of | |
3415 | WINDOW's children when they are in series. | |
3416 | ||
3417 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3418 | windows that become too small unless NODELETE_P is 1. When |
3419 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3420 | window-min-width when resizing windows but use safe defaults instead. | |
3421 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3422 | |
3423 | static void | |
971de7fb | 3424 | size_window (Lisp_Object window, int size, int width_p, int nodelete_p, int first_only, int last_only) |
7ab12479 | 3425 | { |
233a4a2c GM |
3426 | struct window *w = XWINDOW (window); |
3427 | struct window *c; | |
3428 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3429 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3430 | |
7ae2f10f | 3431 | size = max (0, size); |
177c0ea7 | 3432 | |
047aaeb9 MR |
3433 | /* Delete WINDOW if it's too small. */ |
3434 | if (nodelete_p != 1 && !NILP (w->parent) | |
3435 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3436 | { |
047aaeb9 MR |
3437 | delete_window (window); |
3438 | return; | |
7ab12479 JB |
3439 | } |
3440 | ||
233a4a2c | 3441 | /* Set redisplay hints. */ |
7ae2f10f GM |
3442 | w->last_modified = make_number (0); |
3443 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3444 | windows_or_buffers_changed++; |
7ae2f10f | 3445 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3446 | |
233a4a2c GM |
3447 | if (width_p) |
3448 | { | |
3449 | sideward = &w->vchild; | |
3450 | forward = &w->hchild; | |
949cf20f KS |
3451 | w->total_cols = make_number (size); |
3452 | adjust_window_margins (w); | |
233a4a2c GM |
3453 | } |
3454 | else | |
3455 | { | |
3456 | sideward = &w->hchild; | |
3457 | forward = &w->vchild; | |
949cf20f KS |
3458 | w->total_lines = make_number (size); |
3459 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3460 | } |
3461 | ||
3462 | if (!NILP (*sideward)) | |
7ab12479 | 3463 | { |
5fe0b054 | 3464 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3465 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3466 | { |
233a4a2c GM |
3467 | c = XWINDOW (child); |
3468 | if (width_p) | |
949cf20f | 3469 | c->left_col = w->left_col; |
233a4a2c | 3470 | else |
949cf20f | 3471 | c->top_line = w->top_line; |
5fe0b054 RS |
3472 | size_window (child, size, width_p, nodelete_p, |
3473 | first_only, last_only); | |
7ab12479 JB |
3474 | } |
3475 | } | |
5fe0b054 RS |
3476 | else if (!NILP (*forward) && last_only) |
3477 | { | |
3478 | /* Change the last in a series of siblings. */ | |
3479 | Lisp_Object last_child; | |
3480 | int child_size; | |
3481 | ||
78eb494e PE |
3482 | child = *forward; |
3483 | do | |
5fe0b054 RS |
3484 | { |
3485 | c = XWINDOW (child); | |
3486 | last_child = child; | |
78eb494e | 3487 | child = c->next; |
5fe0b054 | 3488 | } |
78eb494e | 3489 | while (!NILP (child)); |
5fe0b054 | 3490 | |
047aaeb9 MR |
3491 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3492 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3493 | width_p, nodelete_p, first_only, last_only); |
3494 | } | |
3495 | else if (!NILP (*forward) && first_only) | |
3496 | { | |
3497 | /* Change the first in a series of siblings. */ | |
3498 | int child_size; | |
3499 | ||
3500 | child = *forward; | |
3501 | c = XWINDOW (child); | |
3502 | ||
3503 | if (width_p) | |
3504 | c->left_col = w->left_col; | |
3505 | else | |
3506 | c->top_line = w->top_line; | |
3507 | ||
047aaeb9 MR |
3508 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3509 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3510 | width_p, nodelete_p, first_only, last_only); |
3511 | } | |
233a4a2c | 3512 | else if (!NILP (*forward)) |
7ab12479 | 3513 | { |
d6550a9f | 3514 | int fixed_size, each IF_LINT (= 0), extra IF_LINT (= 0), n; |
233a4a2c | 3515 | int resize_fixed_p, nfixed; |
8b6d9dc9 | 3516 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3517 | int *new_sizes = NULL; |
233a4a2c | 3518 | |
5fe0b054 | 3519 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3520 | number of child windows. */ |
8b6d9dc9 | 3521 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3522 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3523 | { |
8b6d9dc9 | 3524 | int child_size; |
177c0ea7 | 3525 | |
7ab12479 | 3526 | c = XWINDOW (child); |
047aaeb9 | 3527 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3528 | total += child_size; |
177c0ea7 | 3529 | |
233a4a2c GM |
3530 | if (window_fixed_size_p (c, width_p, 0)) |
3531 | { | |
8b6d9dc9 | 3532 | fixed_size += child_size; |
233a4a2c GM |
3533 | ++nfixed; |
3534 | } | |
3535 | } | |
7ab12479 | 3536 | |
233a4a2c GM |
3537 | /* If the new size is smaller than fixed_size, or if there |
3538 | aren't any resizable windows, allow resizing fixed-size | |
3539 | windows. */ | |
3540 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3541 | ||
6b61353c | 3542 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3543 | value of extra takes care of rounding errors. */ |
3544 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3545 | if (size < total && n > 1) |
047aaeb9 MR |
3546 | new_sizes = shrink_windows (total, size, nchildren, n, |
3547 | resize_fixed_p, *forward, width_p, | |
3548 | nodelete_p == 2); | |
6b61353c KH |
3549 | else |
3550 | { | |
3551 | each = (size - total) / n; | |
3552 | extra = (size - total) - n * each; | |
3553 | } | |
233a4a2c GM |
3554 | |
3555 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3556 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3557 | last_pos = first_pos; |
6b61353c | 3558 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c | 3559 | { |
4554d213 | 3560 | int new_child_size, old_child_size; |
177c0ea7 | 3561 | |
233a4a2c | 3562 | c = XWINDOW (child); |
4554d213 PE |
3563 | old_child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3564 | new_child_size = old_child_size; | |
7ab12479 | 3565 | |
233a4a2c GM |
3566 | /* The top or left edge position of this child equals the |
3567 | bottom or right edge of its predecessor. */ | |
3568 | if (width_p) | |
949cf20f | 3569 | c->left_col = make_number (last_pos); |
233a4a2c | 3570 | else |
949cf20f | 3571 | c->top_line = make_number (last_pos); |
7ab12479 | 3572 | |
233a4a2c GM |
3573 | /* If this child can be resized, do it. */ |
3574 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3575 | { | |
4554d213 PE |
3576 | new_child_size = |
3577 | new_sizes ? new_sizes[n] : old_child_size + each + extra; | |
233a4a2c GM |
3578 | extra = 0; |
3579 | } | |
177c0ea7 | 3580 | |
047aaeb9 | 3581 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3582 | edge positions to children, so it's not a no-op if we |
3583 | didn't change the child's size. */ | |
4554d213 PE |
3584 | size_window (child, new_child_size, width_p, 1, |
3585 | first_only, last_only); | |
233a4a2c GM |
3586 | |
3587 | /* Remember the bottom/right edge position of this child; it | |
3588 | will be used to set the top/left edge of the next child. */ | |
4554d213 | 3589 | last_pos += new_child_size; |
7ab12479 | 3590 | } |
233a4a2c | 3591 | |
70fdbb46 | 3592 | xfree (new_sizes); |
6b61353c | 3593 | |
233a4a2c GM |
3594 | /* We should have covered the parent exactly with child windows. */ |
3595 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3596 | |
7ab12479 | 3597 | /* Now delete any children that became too small. */ |
047aaeb9 | 3598 | if (nodelete_p != 1) |
233a4a2c | 3599 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3600 | { |
233a4a2c | 3601 | int child_size; |
047aaeb9 | 3602 | |
233a4a2c | 3603 | c = XWINDOW (child); |
047aaeb9 MR |
3604 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3605 | size_window (child, child_size, width_p, nodelete_p, | |
3606 | first_only, last_only); | |
7ab12479 JB |
3607 | } |
3608 | } | |
3609 | } | |
3610 | ||
233a4a2c | 3611 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3612 | WINDOW's children. NODELETE zero means windows that have become |
3613 | smaller than window-min-height in the process may be deleted. | |
3614 | NODELETE 1 means never delete windows that become too small in the | |
3615 | process. (The caller should check later and do so if appropriate.) | |
3616 | NODELETE 2 means delete only windows that have become too small to be | |
3617 | displayed correctly. */ | |
7ab12479 | 3618 | |
5e14b1fc | 3619 | void |
971de7fb | 3620 | set_window_height (Lisp_Object window, int height, int nodelete) |
7ab12479 | 3621 | { |
5fe0b054 | 3622 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3623 | } |
7ab12479 | 3624 | |
233a4a2c | 3625 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3626 | WINDOW's children. NODELETE zero means windows that have become |
3627 | smaller than window-min-width in the process may be deleted. | |
3628 | NODELETE 1 means never delete windows that become too small in the | |
3629 | process. (The caller should check later and do so if appropriate.) | |
3630 | NODELETE 2 means delete only windows that have become too small to be | |
3631 | displayed correctly. */ | |
7ab12479 | 3632 | |
233a4a2c | 3633 | void |
971de7fb | 3634 | set_window_width (Lisp_Object window, int width, int nodelete) |
233a4a2c | 3635 | { |
5fe0b054 | 3636 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3637 | } |
233a4a2c | 3638 | |
cdbc7fec KS |
3639 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3640 | ||
3641 | void | |
971de7fb | 3642 | change_window_heights (Lisp_Object window, int n) |
cdbc7fec KS |
3643 | { |
3644 | struct window *w = XWINDOW (window); | |
3645 | ||
949cf20f KS |
3646 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3647 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3648 | |
949cf20f KS |
3649 | if (INTEGERP (w->orig_top_line)) |
3650 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3651 | if (INTEGERP (w->orig_total_lines)) | |
3652 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3653 | |
3654 | /* Handle just the top child in a vertical split. */ | |
3655 | if (!NILP (w->vchild)) | |
3656 | change_window_heights (w->vchild, n); | |
3657 | ||
3658 | /* Adjust all children in a horizontal split. */ | |
3659 | for (window = w->hchild; !NILP (window); window = w->next) | |
3660 | { | |
3661 | w = XWINDOW (window); | |
3662 | change_window_heights (window, n); | |
3663 | } | |
3664 | } | |
3665 | ||
7ab12479 | 3666 | \f |
1d8d96fa | 3667 | int window_select_count; |
7ab12479 | 3668 | |
cd64ea1d PE |
3669 | static Lisp_Object Fset_window_margins (Lisp_Object, Lisp_Object, Lisp_Object); |
3670 | static Lisp_Object Fset_window_fringes (Lisp_Object, Lisp_Object, Lisp_Object, | |
3671 | Lisp_Object); | |
3672 | static Lisp_Object Fset_window_scroll_bars (Lisp_Object, Lisp_Object, | |
3673 | Lisp_Object, Lisp_Object); | |
3674 | static Lisp_Object Fset_window_vscroll (Lisp_Object, Lisp_Object, Lisp_Object); | |
7ab12479 | 3675 | |
6a44ffb3 SM |
3676 | static void |
3677 | run_funs (Lisp_Object funs) | |
3678 | { | |
3679 | for (; CONSP (funs); funs = XCDR (funs)) | |
3680 | if (!EQ (XCAR (funs), Qt)) | |
3681 | call0 (XCAR (funs)); | |
3682 | } | |
3683 | ||
3684 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3685 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3686 | |
ef264c42 SM |
3687 | void |
3688 | run_window_configuration_change_hook (struct frame *f) | |
3689 | { | |
fec89261 | 3690 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3691 | Lisp_Object frame, global_wcch |
3692 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3693 | XSETFRAME (frame, f); | |
3694 | ||
3695 | if (NILP (Vrun_hooks)) | |
3696 | return; | |
3697 | ||
fec89261 MR |
3698 | if (SELECTED_FRAME () != f) |
3699 | { | |
c6932ecd MR |
3700 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
3701 | Fselect_frame (frame, Qt); | |
fec89261 | 3702 | } |
6a44ffb3 SM |
3703 | |
3704 | /* Use the right buffer. Matters when running the local hooks. */ | |
3705 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3706 | { | |
3707 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3708 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3709 | } | |
3710 | ||
3711 | /* Look for buffer-local values. */ | |
3712 | { | |
3713 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3714 | for (; CONSP (windows); windows = XCDR (windows)) | |
3715 | { | |
3716 | Lisp_Object window = XCAR (windows); | |
3717 | Lisp_Object buffer = Fwindow_buffer (window); | |
3718 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3719 | buffer))) | |
3720 | { | |
4554d213 | 3721 | int count1 = SPECPDL_INDEX (); |
6a44ffb3 SM |
3722 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3723 | select_window_norecord (window); | |
3724 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3725 | buffer)); | |
4554d213 | 3726 | unbind_to (count1, Qnil); |
fec89261 | 3727 | } |
6a44ffb3 SM |
3728 | } |
3729 | } | |
047aaeb9 | 3730 | |
6a44ffb3 SM |
3731 | run_funs (global_wcch); |
3732 | unbind_to (count, Qnil); | |
ef264c42 SM |
3733 | } |
3734 | ||
5500c422 GM |
3735 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3736 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3737 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3738 | margins, fringes, and scroll-bar settings of the window are not | |
3739 | reset from the buffer's local settings. */ | |
7ab12479 | 3740 | |
5500c422 | 3741 | void |
971de7fb | 3742 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3743 | { |
3744 | struct window *w = XWINDOW (window); | |
3745 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3746 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3747 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3748 | |
3749 | w->buffer = buffer; | |
86e48436 RS |
3750 | |
3751 | if (EQ (window, selected_window)) | |
4b4deea2 | 3752 | BVAR (b, last_selected_window) = window; |
beb4e312 | 3753 | |
c49a0495 KS |
3754 | /* Let redisplay errors through. */ |
3755 | b->display_error_modiff = 0; | |
3756 | ||
beb4e312 | 3757 | /* Update time stamps of buffer display. */ |
4b4deea2 TT |
3758 | if (INTEGERP (BVAR (b, display_count))) |
3759 | XSETINT (BVAR (b, display_count), XINT (BVAR (b, display_count)) + 1); | |
3760 | BVAR (b, display_time) = Fcurrent_time (); | |
86e48436 | 3761 | |
d834a2e9 | 3762 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 3763 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 3764 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 3765 | w->window_end_valid = Qnil; |
c3b232e4 | 3766 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3767 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3768 | vscroll. This case happens for example when called from |
3769 | change_frame_size_1, where we use a dummy call to | |
3770 | Fset_window_buffer on the frame's selected window (and no other) | |
3771 | just in order to run window-configuration-change-hook. | |
3772 | Resetting hscroll and vscroll here is problematic for things like | |
3773 | image-mode and doc-view-mode since it resets the image's position | |
3774 | whenever we resize the frame. */ | |
3775 | w->hscroll = w->min_hscroll = make_number (0); | |
3776 | w->vscroll = 0; | |
3777 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3778 | set_marker_restricted (w->start, | |
3779 | make_number (b->last_window_start), | |
3780 | buffer); | |
3781 | w->start_at_line_beg = Qnil; | |
3782 | w->force_start = Qnil; | |
3783 | XSETFASTINT (w->last_modified, 0); | |
3784 | XSETFASTINT (w->last_overlay_modified, 0); | |
3785 | } | |
3786 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3787 | I doubt it's worth the trouble. */ | |
7ab12479 | 3788 | windows_or_buffers_changed++; |
5b03d3c0 | 3789 | |
da39107c | 3790 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3791 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3792 | because that might itself be a local variable. */ | |
da39107c | 3793 | if (window_initialized) |
5b03d3c0 | 3794 | { |
da39107c | 3795 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3796 | Fset_buffer (buffer); |
3797 | } | |
3798 | ||
a1562258 SM |
3799 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3800 | ||
949cf20f KS |
3801 | if (!keep_margins_p) |
3802 | { | |
3803 | /* Set left and right marginal area width etc. from buffer. */ | |
3804 | ||
79fd290e | 3805 | /* This may call adjust_window_margins three times, so |
949cf20f | 3806 | temporarily disable window margins. */ |
6b61353c KH |
3807 | Lisp_Object save_left = w->left_margin_cols; |
3808 | Lisp_Object save_right = w->right_margin_cols; | |
3809 | ||
949cf20f KS |
3810 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3811 | ||
3812 | Fset_window_fringes (window, | |
4b4deea2 TT |
3813 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3814 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3815 | |
3816 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3817 | BVAR (b, scroll_bar_width), |
3818 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3819 | |
6b61353c KH |
3820 | w->left_margin_cols = save_left; |
3821 | w->right_margin_cols = save_right; | |
3822 | ||
949cf20f | 3823 | Fset_window_margins (window, |
4b4deea2 | 3824 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3825 | } |
7ab12479 | 3826 | |
5500c422 GM |
3827 | if (run_hooks_p) |
3828 | { | |
3829 | if (! NILP (Vwindow_scroll_functions)) | |
3830 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3831 | Fmarker_position (w->start)); | |
ef264c42 | 3832 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3833 | } |
543f5fb1 | 3834 | |
5b03d3c0 | 3835 | unbind_to (count, Qnil); |
5500c422 | 3836 | } |
5b03d3c0 | 3837 | |
5500c422 | 3838 | |
a7ca3326 | 3839 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3840 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3841 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3842 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3843 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3844 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 3845 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 3846 | |
7bfac547 MR |
3847 | This function throws an error when WINDOW is strongly dedicated to its |
3848 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3849 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3850 | |
8fef9de1 MR |
3851 | This function runs `window-scroll-functions' before running |
3852 | `window-configuration-change-hook'. */) | |
5842a27b | 3853 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3854 | { |
d653c8cc | 3855 | register Lisp_Object tem, buffer; |
5500c422 | 3856 | register struct window *w = decode_window (window); |
5500c422 | 3857 | |
bed0c171 | 3858 | XSETWINDOW (window, w); |
d653c8cc | 3859 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3860 | CHECK_BUFFER (buffer); |
4b4deea2 | 3861 | if (NILP (BVAR (XBUFFER (buffer), name))) |
5500c422 GM |
3862 | error ("Attempt to display deleted buffer"); |
3863 | ||
3864 | tem = w->buffer; | |
aac0c6e3 MR |
3865 | if (NILP (tem)) |
3866 | error ("Window is deleted"); | |
3867 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3868 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3869 | { |
ef1b0ba7 SM |
3870 | if (EQ (tem, buffer)) |
3871 | return Qnil; | |
3872 | else if (EQ (w->dedicated, Qt)) | |
4b4deea2 | 3873 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); |
ef1b0ba7 SM |
3874 | else |
3875 | w->dedicated = Qnil; | |
5500c422 GM |
3876 | |
3877 | unshow_buffer (w); | |
3878 | } | |
3879 | ||
949cf20f | 3880 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3881 | return Qnil; |
3882 | } | |
3883 | ||
14d87dc9 | 3884 | static Lisp_Object |
971de7fb | 3885 | select_window_norecord (Lisp_Object window) |
14d87dc9 | 3886 | { |
ab6d1131 MR |
3887 | return WINDOW_LIVE_P (window) |
3888 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 3889 | } |
c6932ecd MR |
3890 | |
3891 | static Lisp_Object | |
971de7fb | 3892 | select_frame_norecord (Lisp_Object frame) |
c6932ecd MR |
3893 | { |
3894 | return FRAME_LIVE_P (XFRAME (frame)) | |
3895 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3896 | } | |
b7354ddf | 3897 | \f |
7e5cf297 | 3898 | static Lisp_Object |
971de7fb | 3899 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3900 | { |
87478b52 | 3901 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3902 | } |
3903 | ||
6b61353c KH |
3904 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3905 | 0, 1, 0, | |
5a1048a5 | 3906 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3907 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3908 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3909 | displaying that buffer. */) |
5842a27b | 3910 | (Lisp_Object object) |
6b61353c KH |
3911 | { |
3912 | if (NILP (object)) | |
3913 | { | |
3914 | windows_or_buffers_changed++; | |
3915 | update_mode_lines++; | |
3916 | return Qt; | |
3917 | } | |
3918 | ||
3919 | if (WINDOWP (object)) | |
3920 | { | |
3921 | struct window *w = XWINDOW (object); | |
3922 | mark_window_display_accurate (object, 0); | |
3923 | w->update_mode_line = Qt; | |
3924 | if (BUFFERP (w->buffer)) | |
3925 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3926 | ++update_mode_lines; | |
3927 | return Qt; | |
3928 | } | |
0cc1039f | 3929 | |
6b61353c KH |
3930 | if (STRINGP (object)) |
3931 | object = Fget_buffer (object); | |
4b4deea2 | 3932 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
6b61353c KH |
3933 | { |
3934 | /* Walk all windows looking for buffer, and force update | |
3935 | of each of those windows. */ | |
3936 | ||
3937 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3938 | return NILP (object) ? Qnil : Qt; | |
3939 | } | |
3940 | ||
3941 | /* If nothing suitable was found, just return. | |
3942 | We could signal an error, but this feature will typically be used | |
3943 | asynchronously in timers or process sentinels, so we don't. */ | |
3944 | return Qnil; | |
3945 | } | |
3946 | ||
3947 | ||
7ab12479 | 3948 | void |
971de7fb | 3949 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3950 | { |
3951 | register struct buffer *old = current_buffer; | |
3952 | register Lisp_Object window; | |
3953 | register struct window *w; | |
3954 | ||
4b4deea2 | 3955 | BVAR (XBUFFER (buf), directory) = BVAR (current_buffer, directory); |
bccd3dd1 | 3956 | |
7ab12479 | 3957 | Fset_buffer (buf); |
c6367666 | 3958 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3959 | BEGV = BEG; |
3960 | ZV = Z; | |
3961 | SET_PT (BEG); | |
7ab12479 JB |
3962 | set_buffer_internal (old); |
3963 | ||
e67a1dea | 3964 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3965 | call1 (Vtemp_buffer_show_function, buf); |
3966 | else | |
3967 | { | |
87478b52 | 3968 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3969 | |
1ae1a37d | 3970 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3971 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3972 | Vminibuf_scroll_window = window; |
3973 | w = XWINDOW (window); | |
d834a2e9 | 3974 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3975 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3976 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3977 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3978 | |
beb4e312 | 3979 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3980 | and its buffer current. */ |
dee091a3 JD |
3981 | { |
3982 | int count = SPECPDL_INDEX (); | |
3983 | Lisp_Object prev_window, prev_buffer; | |
3984 | prev_window = selected_window; | |
3985 | XSETBUFFER (prev_buffer, old); | |
3986 | ||
3987 | /* Select the window that was chosen, for running the hook. | |
3988 | Note: Both Fselect_window and select_window_norecord may | |
3989 | set-buffer to the buffer displayed in the window, | |
3990 | so we need to save the current buffer. --stef */ | |
3991 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3992 | record_unwind_protect (select_window_norecord, prev_window); | |
3993 | Fselect_window (window, Qt); | |
3994 | Fset_buffer (w->buffer); | |
3995 | Frun_hooks (1, &Qtemp_buffer_show_hook); | |
3996 | unbind_to (count, Qnil); | |
3997 | } | |
2cccc823 | 3998 | } |
7ab12479 | 3999 | } |
3e21b6a7 SM |
4000 | |
4001 | DEFUN ("internal-temp-output-buffer-show", | |
4002 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
4003 | 1, 1, 0, | |
4004 | doc: /* Internal function for `with-output-to-temp-buffer''. */) | |
4005 | (Lisp_Object buf) | |
4006 | { | |
4007 | temp_output_buffer_show (buf); | |
4008 | return Qnil; | |
4009 | } | |
7ab12479 | 4010 | \f |
dfcf069d | 4011 | static void |
971de7fb | 4012 | make_dummy_parent (Lisp_Object window) |
7ab12479 | 4013 | { |
cffec418 | 4014 | Lisp_Object new; |
7ab12479 | 4015 | register struct window *o, *p; |
cffec418 | 4016 | int i; |
7ab12479 | 4017 | |
cffec418 | 4018 | o = XWINDOW (window); |
26605be9 | 4019 | p = allocate_window (); |
cffec418 | 4020 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
4021 | ((struct Lisp_Vector *) p)->contents[i] |
4022 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 4023 | XSETWINDOW (new, p); |
7ab12479 | 4024 | |
2a1893f4 SM |
4025 | ++sequence_number; |
4026 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
4027 | |
4028 | /* Put new into window structure in place of window */ | |
4029 | replace_window (window, new); | |
4030 | ||
4031 | o->next = Qnil; | |
4032 | o->prev = Qnil; | |
4033 | o->vchild = Qnil; | |
4034 | o->hchild = Qnil; | |
4035 | o->parent = new; | |
4036 | ||
4037 | p->start = Qnil; | |
4038 | p->pointm = Qnil; | |
4039 | p->buffer = Qnil; | |
4040 | } | |
4041 | ||
4042 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
4043 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
4044 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
4045 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
4046 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
4047 | window's scroll bar, or the divider column to its right. | |
c2755926 | 4048 | Interactively, all arguments are nil. |
c2755926 | 4049 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
4050 | The upper or leftmost window is the original one, and remains selected |
4051 | if it was selected before. | |
4052 | ||
87527026 | 4053 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
5842a27b | 4054 | (Lisp_Object window, Lisp_Object size, Lisp_Object horizontal) |
7ab12479 JB |
4055 | { |
4056 | register Lisp_Object new; | |
4057 | register struct window *o, *p; | |
c0807608 | 4058 | FRAME_PTR fo; |
77ae0fe3 | 4059 | register int size_int; |
7ab12479 | 4060 | |
265a9e55 | 4061 | if (NILP (window)) |
7ab12479 JB |
4062 | window = selected_window; |
4063 | else | |
b7826503 | 4064 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4065 | |
4066 | o = XWINDOW (window); | |
c0807608 | 4067 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 4068 | |
77ae0fe3 | 4069 | if (NILP (size)) |
7ab12479 | 4070 | { |
87527026 | 4071 | if (!NILP (horizontal)) |
c0807608 | 4072 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
4073 | the usable space in columns by two. |
4074 | We round up, since the left-hand window may include | |
4075 | a dividing line, while the right-hand may not. */ | |
949cf20f | 4076 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 4077 | else |
949cf20f | 4078 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
4079 | } |
4080 | else | |
4081 | { | |
b7826503 | 4082 | CHECK_NUMBER (size); |
77ae0fe3 | 4083 | size_int = XINT (size); |
7ab12479 JB |
4084 | } |
4085 | ||
4086 | if (MINI_WINDOW_P (o)) | |
4087 | error ("Attempt to split minibuffer window"); | |
87527026 | 4088 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 4089 | error ("Attempt to split fixed-size window"); |
7ab12479 | 4090 | |
87527026 | 4091 | if (NILP (horizontal)) |
7ab12479 | 4092 | { |
047aaeb9 MR |
4093 | int window_safe_height = window_min_size_2 (o, 0, 0); |
4094 | ||
f1de8c77 | 4095 | if (size_int < window_safe_height) |
77ae0fe3 | 4096 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 4097 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 4098 | error ("Window height %d too small (after splitting)", |
5fdb398c | 4099 | (int) (XFASTINT (o->total_lines) - size_int)); |
265a9e55 JB |
4100 | if (NILP (o->parent) |
4101 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
4102 | { |
4103 | make_dummy_parent (window); | |
4104 | new = o->parent; | |
4105 | XWINDOW (new)->vchild = window; | |
4106 | } | |
4107 | } | |
4108 | else | |
4109 | { | |
047aaeb9 MR |
4110 | int window_safe_width = window_min_size_2 (o, 1, 0); |
4111 | ||
f1de8c77 | 4112 | if (size_int < window_safe_width) |
77ae0fe3 | 4113 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 4114 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 4115 | error ("Window width %d too small (after splitting)", |
5fdb398c | 4116 | (int) (XFASTINT (o->total_cols) - size_int)); |
265a9e55 JB |
4117 | if (NILP (o->parent) |
4118 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
4119 | { |
4120 | make_dummy_parent (window); | |
4121 | new = o->parent; | |
4122 | XWINDOW (new)->hchild = window; | |
4123 | } | |
4124 | } | |
4125 | ||
4126 | /* Now we know that window's parent is a vertical combination | |
4127 | if we are dividing vertically, or a horizontal combination | |
4128 | if we are making side-by-side windows */ | |
4129 | ||
4130 | windows_or_buffers_changed++; | |
c0807608 | 4131 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
4132 | new = make_window (); |
4133 | p = XWINDOW (new); | |
4134 | ||
44fa5b1e | 4135 | p->frame = o->frame; |
7ab12479 | 4136 | p->next = o->next; |
265a9e55 | 4137 | if (!NILP (p->next)) |
7ab12479 JB |
4138 | XWINDOW (p->next)->prev = new; |
4139 | p->prev = window; | |
4140 | o->next = new; | |
4141 | p->parent = o->parent; | |
4142 | p->buffer = Qt; | |
5500c422 | 4143 | p->window_end_valid = Qnil; |
72af86bd | 4144 | memset (&p->last_cursor, 0, sizeof p->last_cursor); |
7ab12479 | 4145 | |
949cf20f KS |
4146 | /* Duplicate special geometry settings. */ |
4147 | ||
4148 | p->left_margin_cols = o->left_margin_cols; | |
4149 | p->right_margin_cols = o->right_margin_cols; | |
4150 | p->left_fringe_width = o->left_fringe_width; | |
4151 | p->right_fringe_width = o->right_fringe_width; | |
4152 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4153 | p->scroll_bar_width = o->scroll_bar_width; | |
4154 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4155 | ||
44fa5b1e | 4156 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4157 | |
87527026 | 4158 | if (!NILP (horizontal)) |
7ab12479 | 4159 | { |
949cf20f KS |
4160 | p->total_lines = o->total_lines; |
4161 | p->top_line = o->top_line; | |
4162 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4163 | XSETFASTINT (o->total_cols, size_int); | |
4164 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4165 | adjust_window_margins (p); | |
4166 | adjust_window_margins (o); | |
7ab12479 JB |
4167 | } |
4168 | else | |
4169 | { | |
949cf20f KS |
4170 | p->left_col = o->left_col; |
4171 | p->total_cols = o->total_cols; | |
4172 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4173 | XSETFASTINT (o->total_lines, size_int); | |
4174 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4175 | } |
4176 | ||
5500c422 GM |
4177 | /* Adjust glyph matrices. */ |
4178 | adjust_glyphs (fo); | |
949cf20f KS |
4179 | |
4180 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4181 | return new; |
4182 | } | |
4183 | \f | |
56ebfae2 | 4184 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
4185 | doc: /* Make selected window SIZE lines taller. |
4186 | Interactively, if no argument is given, make the selected window one | |
4187 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
4188 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
4189 | -SIZE lines or columns. Return nil. | |
4190 | ||
4191 | This function can delete windows if they get too small. The size of | |
4192 | fixed size windows is not altered by this function. */) | |
5842a27b | 4193 | (Lisp_Object size, Lisp_Object horizontal) |
7ab12479 | 4194 | { |
aac0c6e3 MR |
4195 | CHECK_NUMBER (size); |
4196 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 4197 | |
eeca6f6f | 4198 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4199 | |
7ab12479 JB |
4200 | return Qnil; |
4201 | } | |
4202 | ||
56ebfae2 | 4203 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
4204 | doc: /* Make selected window SIZE lines smaller. |
4205 | Interactively, if no argument is given, make the selected window one | |
4206 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
4207 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
4208 | window by -SIZE lines or columns. Return nil. | |
4209 | ||
4210 | This function can delete windows if they get too small. The size of | |
4211 | fixed size windows is not altered by this function. */) | |
5842a27b | 4212 | (Lisp_Object size, Lisp_Object horizontal) |
aac0c6e3 MR |
4213 | { |
4214 | CHECK_NUMBER (size); | |
4215 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 4216 | |
eeca6f6f | 4217 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4218 | |
7ab12479 JB |
4219 | return Qnil; |
4220 | } | |
4221 | ||
2f7c71a1 | 4222 | static int |
971de7fb | 4223 | window_height (Lisp_Object window) |
7ab12479 JB |
4224 | { |
4225 | register struct window *p = XWINDOW (window); | |
949cf20f | 4226 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4227 | } |
4228 | ||
2f7c71a1 | 4229 | static int |
971de7fb | 4230 | window_width (Lisp_Object window) |
7ab12479 JB |
4231 | { |
4232 | register struct window *p = XWINDOW (window); | |
949cf20f | 4233 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4234 | } |
4235 | ||
177c0ea7 | 4236 | |
7ab12479 | 4237 | #define CURBEG(w) \ |
5afc696a | 4238 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4239 | |
4240 | #define CURSIZE(w) \ | |
5afc696a | 4241 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 4242 | |
233a4a2c | 4243 | |
047aaeb9 MR |
4244 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
4245 | horizontally; zero means do it vertically. | |
f95284d2 | 4246 | |
5afc696a | 4247 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 4248 | request. If they become too small in the process, they may be |
56ebfae2 | 4249 | deleted. */ |
7ab12479 | 4250 | |
f984d4fc | 4251 | static void |
971de7fb | 4252 | enlarge_window (Lisp_Object window, int delta, int horiz_flag) |
7ab12479 | 4253 | { |
86c8e823 | 4254 | Lisp_Object parent, next, prev; |
233a4a2c | 4255 | struct window *p; |
3578db3c KR |
4256 | Lisp_Object *sizep; |
4257 | int maximum; | |
f57e2426 | 4258 | int (*sizefun) (Lisp_Object) |
5afc696a | 4259 | = horiz_flag ? window_width : window_height; |
f57e2426 | 4260 | void (*setsizefun) (Lisp_Object, int, int) |
5afc696a | 4261 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4262 | |
233a4a2c | 4263 | /* Give up if this window cannot be resized. */ |
5afc696a | 4264 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4265 | error ("Window is not resizable"); |
4266 | ||
4267 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4268 | while (1) |
4269 | { | |
4270 | p = XWINDOW (window); | |
4271 | parent = p->parent; | |
177c0ea7 | 4272 | |
265a9e55 | 4273 | if (NILP (parent)) |
7ab12479 | 4274 | { |
5afc696a | 4275 | if (horiz_flag) |
7ab12479 JB |
4276 | error ("No other window to side of this one"); |
4277 | break; | |
4278 | } | |
177c0ea7 | 4279 | |
5afc696a | 4280 | if (horiz_flag |
233a4a2c | 4281 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4282 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4283 | break; |
177c0ea7 | 4284 | |
7ab12479 JB |
4285 | window = parent; |
4286 | } | |
4287 | ||
05c2896a | 4288 | sizep = &CURSIZE (window); |
7ab12479 | 4289 | |
7ab12479 JB |
4290 | { |
4291 | register int maxdelta; | |
7ab12479 | 4292 | |
f95284d2 RS |
4293 | /* Compute the maximum size increment this window can have. */ |
4294 | ||
56ebfae2 RS |
4295 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4296 | /* This is a main window followed by a minibuffer. */ | |
4297 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4298 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4299 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4300 | /* This is a minibuffer following a main window. */ |
4301 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4302 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4303 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4304 | /* This is a frame with only one window, a minibuffer-only |
4305 | or a minibufferless frame. */ | |
4306 | : (delta = 0)); | |
7ab12479 JB |
4307 | |
4308 | if (delta > maxdelta) | |
4309 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4310 | the full frame, or make the only window aside from the |
4311 | minibuffer the full frame. */ | |
7ab12479 | 4312 | delta = maxdelta; |
6b54027b | 4313 | } |
d5783c40 | 4314 | |
047aaeb9 MR |
4315 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4316 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4317 | { |
543f5fb1 | 4318 | delete_window (window); |
d5783c40 | 4319 | return; |
6b54027b RS |
4320 | } |
4321 | ||
4322 | if (delta == 0) | |
4323 | return; | |
7ab12479 | 4324 | |
f95284d2 | 4325 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4326 | maximum = 0; |
9beb8baa | 4327 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4328 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4329 | horiz_flag, 0, 0, 0); |
9beb8baa | 4330 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4331 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4332 | horiz_flag, 0, 0, 0); |
db98a733 | 4333 | |
f95284d2 | 4334 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4335 | if (delta <= maximum) |
7ab12479 | 4336 | { |
db98a733 RS |
4337 | Lisp_Object first_unaffected; |
4338 | Lisp_Object first_affected; | |
233a4a2c | 4339 | int fixed_p; |
db98a733 RS |
4340 | |
4341 | next = p->next; | |
4342 | prev = p->prev; | |
4343 | first_affected = window; | |
4344 | /* Look at one sibling at a time, | |
4345 | moving away from this window in both directions alternately, | |
4346 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4347 | while (delta != 0 |
56ebfae2 | 4348 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4349 | { |
db98a733 RS |
4350 | if (! NILP (next)) |
4351 | { | |
c1636aa6 | 4352 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4353 | - window_min_size (XWINDOW (next), horiz_flag, |
4354 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4355 | if (!fixed_p) |
4356 | { | |
4357 | if (this_one > delta) | |
4358 | this_one = delta; | |
177c0ea7 | 4359 | |
233a4a2c | 4360 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4361 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4362 | |
233a4a2c GM |
4363 | delta -= this_one; |
4364 | } | |
177c0ea7 | 4365 | |
db98a733 RS |
4366 | next = XWINDOW (next)->next; |
4367 | } | |
177c0ea7 | 4368 | |
db98a733 RS |
4369 | if (delta == 0) |
4370 | break; | |
177c0ea7 | 4371 | |
56ebfae2 | 4372 | if (! NILP (prev)) |
db98a733 | 4373 | { |
c1636aa6 | 4374 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4375 | - window_min_size (XWINDOW (prev), horiz_flag, |
4376 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4377 | if (!fixed_p) |
4378 | { | |
4379 | if (this_one > delta) | |
4380 | this_one = delta; | |
177c0ea7 | 4381 | |
233a4a2c | 4382 | first_affected = prev; |
177c0ea7 | 4383 | |
233a4a2c | 4384 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4385 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4386 | |
4387 | delta -= this_one; | |
4388 | } | |
177c0ea7 | 4389 | |
db98a733 RS |
4390 | prev = XWINDOW (prev)->prev; |
4391 | } | |
4392 | } | |
4393 | ||
233a4a2c GM |
4394 | xassert (delta == 0); |
4395 | ||
db98a733 RS |
4396 | /* Now recalculate the edge positions of all the windows affected, |
4397 | based on the new sizes. */ | |
4398 | first_unaffected = next; | |
4399 | prev = first_affected; | |
4400 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4401 | prev = next, next = XWINDOW (next)->next) | |
4402 | { | |
3578db3c | 4403 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4404 | /* This does not change size of NEXT, |
4405 | but it propagates the new top edge to its children */ | |
4406 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4407 | } | |
7ab12479 JB |
4408 | } |
4409 | else | |
4410 | { | |
4411 | register int delta1; | |
4412 | register int opht = (*sizefun) (parent); | |
4413 | ||
3578db3c | 4414 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4415 | { |
4416 | /* If trying to grow this window to or beyond size of the parent, | |
4417 | just delete all the sibling windows. */ | |
4554d213 | 4418 | Lisp_Object start, tem; |
daf516d3 | 4419 | |
dc1ab1ee RS |
4420 | start = XWINDOW (parent)->vchild; |
4421 | if (NILP (start)) | |
4422 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4423 | |
dc1ab1ee RS |
4424 | /* Delete any siblings that come after WINDOW. */ |
4425 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4426 | while (! NILP (tem)) |
4427 | { | |
4554d213 | 4428 | Lisp_Object next1 = XWINDOW (tem)->next; |
dc1ab1ee | 4429 | delete_window (tem); |
4554d213 | 4430 | tem = next1; |
dc1ab1ee RS |
4431 | } |
4432 | ||
4433 | /* Delete any siblings that come after WINDOW. | |
4434 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4435 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4436 | tem = start; |
4437 | while (! EQ (tem, window)) | |
4438 | { | |
4554d213 | 4439 | Lisp_Object next1 = XWINDOW (tem)->next; |
dc1ab1ee | 4440 | delete_window (tem); |
4554d213 | 4441 | tem = next1; |
daf516d3 RS |
4442 | } |
4443 | } | |
7ab12479 | 4444 | else |
233a4a2c GM |
4445 | { |
4446 | /* Otherwise, make delta1 just right so that if we add | |
4447 | delta1 lines to this window and to the parent, and then | |
4448 | shrink the parent back to its original size, the new | |
4449 | proportional size of this window will increase by delta. | |
4450 | ||
4451 | The function size_window will compute the new height h' | |
4452 | of the window from delta1 as: | |
177c0ea7 | 4453 | |
233a4a2c GM |
4454 | e = delta1/n |
4455 | x = delta1 - delta1/n * n for the 1st resizable child | |
4456 | h' = h + e + x | |
4457 | ||
4458 | where n is the number of children that can be resized. | |
4459 | We can ignore x by choosing a delta1 that is a multiple of | |
4460 | n. We want the height of this window to come out as | |
177c0ea7 | 4461 | |
233a4a2c GM |
4462 | h' = h + delta |
4463 | ||
4464 | So, delta1 must be | |
177c0ea7 | 4465 | |
233a4a2c GM |
4466 | h + e = h + delta |
4467 | delta1/n = delta | |
4468 | delta1 = n * delta. | |
4469 | ||
a5731348 | 4470 | The number of children n equals the number of resizable |
233a4a2c | 4471 | children of this window + 1 because we know window itself |
04bf5b65 | 4472 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4473 | |
4474 | This reasoning is not correct when other windows become too | |
4475 | small and shrink_windows refuses to delete them. Below we | |
4476 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4477 | |
4478 | struct window *w = XWINDOW (window); | |
4479 | Lisp_Object s; | |
4480 | int n = 1; | |
4481 | ||
9beb8baa | 4482 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4483 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4484 | ++n; |
9beb8baa | 4485 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4486 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4487 | ++n; |
4488 | ||
4489 | delta1 = n * delta; | |
7ab12479 | 4490 | |
daf516d3 RS |
4491 | /* Add delta1 lines or columns to this window, and to the parent, |
4492 | keeping things consistent while not affecting siblings. */ | |
4493 | XSETINT (CURSIZE (parent), opht + delta1); | |
4494 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4495 | ||
4496 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4497 | shrinking this window and siblings proportionately. This |
4498 | brings parent back to correct size. Delta1 was calculated | |
4499 | so this makes this window the desired size, taking it all | |
4500 | out of the siblings. | |
4501 | ||
4502 | Temporarily set resize_proportionally to Qt to assure that, | |
4503 | if necessary, shrink_windows deletes smaller windows rather | |
4504 | than shrink this window. */ | |
4505 | w->resize_proportionally = Qt; | |
daf516d3 | 4506 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4507 | w->resize_proportionally = Qnil; |
daf516d3 | 4508 | } |
7ab12479 JB |
4509 | } |
4510 | ||
d834a2e9 | 4511 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4512 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4513 | |
4514 | /* Adjust glyph matrices. */ | |
4515 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4516 | } |
c1636aa6 | 4517 | |
0d384044 RS |
4518 | |
4519 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4520 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4521 | zero means adjust the height, moving the bottom edge. | |
4522 | ||
4523 | Following siblings of the selected window are resized to fulfill | |
4524 | the size request. If they become too small in the process, they | |
4525 | are not deleted; instead, we signal an error. */ | |
4526 | ||
4527 | static void | |
971de7fb | 4528 | adjust_window_trailing_edge (Lisp_Object window, int delta, int horiz_flag) |
0d384044 RS |
4529 | { |
4530 | Lisp_Object parent, child; | |
4531 | struct window *p; | |
4532 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4533 | int delcount = window_deletion_count; | |
4534 | ||
0d384044 RS |
4535 | CHECK_WINDOW (window); |
4536 | ||
4537 | /* Give up if this window cannot be resized. */ | |
4538 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4539 | error ("Window is not resizable"); | |
4540 | ||
4541 | while (1) | |
4542 | { | |
bd99e242 RS |
4543 | Lisp_Object first_parallel = Qnil; |
4544 | ||
c32de52a | 4545 | if (NILP (window)) |
0d384044 | 4546 | { |
5fe0b054 RS |
4547 | /* This happens if WINDOW on the previous iteration was |
4548 | at top level of the window tree. */ | |
0d384044 | 4549 | Fset_window_configuration (old_config); |
c32de52a | 4550 | error ("Specified window edge is fixed"); |
0d384044 RS |
4551 | } |
4552 | ||
c32de52a RS |
4553 | p = XWINDOW (window); |
4554 | parent = p->parent; | |
4555 | ||
bd99e242 RS |
4556 | /* See if this level has windows in parallel in the specified |
4557 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4558 | if (horiz_flag) | |
4559 | { | |
4560 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4561 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4562 | else if (NILP (parent) && !NILP (p->next)) |
4563 | { | |
4564 | /* Handle the vertical chain of main window and minibuffer | |
4565 | which has no parent. */ | |
4566 | first_parallel = window; | |
4567 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4568 | first_parallel = XWINDOW (first_parallel)->prev; | |
4569 | } | |
bd99e242 RS |
4570 | } |
4571 | else | |
4572 | { | |
4573 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4574 | first_parallel = XWINDOW (parent)->hchild; | |
4575 | } | |
4576 | ||
c32de52a | 4577 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4578 | and this window is the last one, and there is no higher level, |
4579 | its trailing edge is fixed. */ | |
4580 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4581 | && NILP (parent)) | |
c32de52a RS |
4582 | { |
4583 | Fset_window_configuration (old_config); | |
4584 | error ("Specified window edge is fixed"); | |
4585 | } | |
4586 | ||
0d384044 RS |
4587 | /* Don't make this window too small. */ |
4588 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4589 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4590 | { |
4591 | Fset_window_configuration (old_config); | |
4592 | error ("Cannot adjust window size as specified"); | |
4593 | } | |
4594 | ||
4595 | /* Clear out some redisplay caches. */ | |
4596 | XSETFASTINT (p->last_modified, 0); | |
4597 | XSETFASTINT (p->last_overlay_modified, 0); | |
4598 | ||
4599 | /* Adjust this window's edge. */ | |
4600 | XSETINT (CURSIZE (window), | |
4601 | XINT (CURSIZE (window)) + delta); | |
4602 | ||
4603 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4604 | make them smaller, and exit the loop. |
4605 | ||
0d384044 RS |
4606 | (If we reach the top of the tree and can never do this, |
4607 | we will fail and report an error, above.) */ | |
bd99e242 | 4608 | if (NILP (first_parallel)) |
0d384044 | 4609 | { |
c32de52a | 4610 | if (!NILP (p->next)) |
0d384044 | 4611 | { |
e99c7521 JD |
4612 | /* This may happen for the minibuffer. In that case |
4613 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4614 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4615 | { |
4616 | Fset_window_configuration (old_config); | |
4617 | error ("Cannot adjust window size as specified"); | |
4618 | } | |
4619 | ||
0d384044 RS |
4620 | XSETINT (CURBEG (p->next), |
4621 | XINT (CURBEG (p->next)) + delta); | |
4622 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4623 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4624 | break; |
4625 | } | |
4626 | } | |
4627 | else | |
4628 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4629 | Change the size of the other siblings. */ | |
bd99e242 | 4630 | for (child = first_parallel; |
0d384044 RS |
4631 | ! NILP (child); |
4632 | child = XWINDOW (child)->next) | |
4633 | if (! EQ (child, window)) | |
4634 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4635 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4636 | |
4637 | window = parent; | |
4638 | } | |
4639 | ||
4640 | /* If we made a window so small it got deleted, | |
4641 | we failed. Report failure. */ | |
4642 | if (delcount != window_deletion_count) | |
4643 | { | |
4644 | Fset_window_configuration (old_config); | |
4645 | error ("Cannot adjust window size as specified"); | |
4646 | } | |
4647 | ||
4648 | /* Adjust glyph matrices. */ | |
4649 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4650 | } | |
4651 | ||
7ab12479 JB |
4652 | #undef CURBEG |
4653 | #undef CURSIZE | |
4654 | ||
0d384044 RS |
4655 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4656 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4657 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4658 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4659 | Otherwise, adjust the height, moving the bottom edge. |
4660 | ||
4661 | Following siblings of the selected window are resized to fulfill | |
4662 | the size request. If they become too small in the process, they | |
4663 | are not deleted; instead, we signal an error. */) | |
5842a27b | 4664 | (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal) |
0d384044 RS |
4665 | { |
4666 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4667 | if (NILP (window)) |
4668 | window = selected_window; | |
0d384044 RS |
4669 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4670 | ||
eeca6f6f SM |
4671 | run_window_configuration_change_hook |
4672 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4673 | |
4674 | return Qnil; | |
4675 | } | |
4676 | ||
5500c422 | 4677 | |
f984d4fc GM |
4678 | \f |
4679 | /*********************************************************************** | |
4680 | Resizing Mini-Windows | |
4681 | ***********************************************************************/ | |
4682 | ||
f57e2426 | 4683 | static void shrink_window_lowest_first (struct window *, int); |
f984d4fc | 4684 | |
43b4a21f GM |
4685 | enum save_restore_action |
4686 | { | |
4687 | CHECK_ORIG_SIZES, | |
4688 | SAVE_ORIG_SIZES, | |
4689 | RESTORE_ORIG_SIZES | |
4690 | }; | |
4691 | ||
f57e2426 J |
4692 | static int save_restore_orig_size (struct window *, |
4693 | enum save_restore_action); | |
f984d4fc GM |
4694 | |
4695 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4696 | from lowest windows first. */ | |
4697 | ||
4698 | static void | |
971de7fb | 4699 | shrink_window_lowest_first (struct window *w, int height) |
f984d4fc GM |
4700 | { |
4701 | struct window *c; | |
4702 | Lisp_Object child; | |
4703 | int old_height; | |
4704 | ||
4705 | xassert (!MINI_WINDOW_P (w)); | |
4706 | ||
4707 | /* Set redisplay hints. */ | |
4708 | XSETFASTINT (w->last_modified, 0); | |
4709 | XSETFASTINT (w->last_overlay_modified, 0); | |
4710 | windows_or_buffers_changed++; | |
4711 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4712 | ||
949cf20f KS |
4713 | old_height = XFASTINT (w->total_lines); |
4714 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4715 | |
4716 | if (!NILP (w->hchild)) | |
4717 | { | |
4718 | for (child = w->hchild; !NILP (child); child = c->next) | |
4719 | { | |
4720 | c = XWINDOW (child); | |
949cf20f | 4721 | c->top_line = w->top_line; |
f984d4fc GM |
4722 | shrink_window_lowest_first (c, height); |
4723 | } | |
4724 | } | |
4725 | else if (!NILP (w->vchild)) | |
4726 | { | |
4727 | Lisp_Object last_child; | |
4728 | int delta = old_height - height; | |
4729 | int last_top; | |
6bbd7a29 GM |
4730 | |
4731 | last_child = Qnil; | |
177c0ea7 | 4732 | |
f984d4fc GM |
4733 | /* Find the last child. We are taking space from lowest windows |
4734 | first, so we iterate over children from the last child | |
4735 | backwards. */ | |
9beb8baa | 4736 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4737 | last_child = child; |
4738 | ||
047aaeb9 | 4739 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4740 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4741 | { | |
4742 | int this_one; | |
177c0ea7 | 4743 | |
f984d4fc | 4744 | c = XWINDOW (child); |
047aaeb9 | 4745 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4746 | |
4747 | if (this_one > delta) | |
4748 | this_one = delta; | |
4749 | ||
949cf20f | 4750 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4751 | delta -= this_one; |
4752 | } | |
4753 | ||
4754 | /* Compute new positions. */ | |
949cf20f | 4755 | last_top = XINT (w->top_line); |
f984d4fc GM |
4756 | for (child = w->vchild; !NILP (child); child = c->next) |
4757 | { | |
4758 | c = XWINDOW (child); | |
949cf20f KS |
4759 | c->top_line = make_number (last_top); |
4760 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4761 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4762 | } |
4763 | } | |
4764 | } | |
4765 | ||
4766 | ||
43b4a21f GM |
4767 | /* Save, restore, or check positions and sizes in the window tree |
4768 | rooted at W. ACTION says what to do. | |
f984d4fc | 4769 | |
949cf20f KS |
4770 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4771 | orig_total_lines members are valid for all windows in the window | |
4772 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4773 | |
43b4a21f | 4774 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4775 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4776 | |
949cf20f KS |
4777 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4778 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4779 | |
4780 | static int | |
971de7fb | 4781 | save_restore_orig_size (struct window *w, enum save_restore_action action) |
f984d4fc | 4782 | { |
43b4a21f GM |
4783 | int success_p = 1; |
4784 | ||
f984d4fc GM |
4785 | while (w) |
4786 | { | |
4787 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4788 | { |
4789 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4790 | success_p = 0; | |
4791 | } | |
f984d4fc | 4792 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4793 | { |
4794 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4795 | success_p = 0; | |
4796 | } | |
177c0ea7 | 4797 | |
43b4a21f | 4798 | switch (action) |
f984d4fc | 4799 | { |
43b4a21f | 4800 | case CHECK_ORIG_SIZES: |
949cf20f | 4801 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4802 | return 0; |
4803 | break; | |
4804 | ||
4805 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4806 | w->orig_top_line = w->top_line; |
4807 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4808 | XSETFASTINT (w->last_modified, 0); |
4809 | XSETFASTINT (w->last_overlay_modified, 0); | |
4810 | break; | |
4811 | ||
4812 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4813 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4814 | w->top_line = w->orig_top_line; | |
4815 | w->total_lines = w->orig_total_lines; | |
4816 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4817 | XSETFASTINT (w->last_modified, 0); |
4818 | XSETFASTINT (w->last_overlay_modified, 0); | |
4819 | break; | |
4820 | ||
4821 | default: | |
4822 | abort (); | |
f984d4fc | 4823 | } |
43b4a21f | 4824 | |
f984d4fc GM |
4825 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4826 | } | |
43b4a21f GM |
4827 | |
4828 | return success_p; | |
f984d4fc GM |
4829 | } |
4830 | ||
4831 | ||
4832 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4833 | without deleting other windows. */ | |
4834 | ||
4835 | void | |
971de7fb | 4836 | grow_mini_window (struct window *w, int delta) |
f984d4fc GM |
4837 | { |
4838 | struct frame *f = XFRAME (w->frame); | |
4839 | struct window *root; | |
177c0ea7 | 4840 | |
f984d4fc | 4841 | xassert (MINI_WINDOW_P (w)); |
522d013a JB |
4842 | /* Commenting out the following assertion goes against the stated interface |
4843 | of the function, but it currently does not seem to do anything useful. | |
4844 | See discussion of this issue in the thread for bug#4534. | |
4845 | xassert (delta >= 0); */ | |
177c0ea7 | 4846 | |
f984d4fc GM |
4847 | /* Compute how much we can enlarge the mini-window without deleting |
4848 | other windows. */ | |
4849 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
522d013a | 4850 | if (delta > 0) |
f984d4fc | 4851 | { |
047aaeb9 | 4852 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4853 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4854 | /* Note that the root window may already be smaller than |
eafa3196 | 4855 | min_height. */ |
949cf20f | 4856 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4857 | } |
177c0ea7 | 4858 | |
f984d4fc GM |
4859 | if (delta) |
4860 | { | |
4861 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4862 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4863 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4864 | |
4865 | /* Shrink other windows. */ | |
949cf20f | 4866 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4867 | |
4868 | /* Grow the mini-window. */ | |
949cf20f KS |
4869 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4870 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4871 | XSETFASTINT (w->last_modified, 0); |
4872 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4873 | |
f984d4fc GM |
4874 | adjust_glyphs (f); |
4875 | } | |
4876 | } | |
4877 | ||
4878 | ||
86c8e823 GM |
4879 | /* Shrink mini-window W. If there is recorded info about window sizes |
4880 | before a call to grow_mini_window, restore recorded window sizes. | |
4881 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4882 | line. */ | |
f984d4fc GM |
4883 | |
4884 | void | |
971de7fb | 4885 | shrink_mini_window (struct window *w) |
f984d4fc GM |
4886 | { |
4887 | struct frame *f = XFRAME (w->frame); | |
4888 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4889 | ||
43b4a21f | 4890 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4891 | { |
43b4a21f | 4892 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4893 | adjust_glyphs (f); |
4894 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4895 | windows_or_buffers_changed = 1; | |
4896 | } | |
949cf20f | 4897 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4898 | { |
0130fe1a GM |
4899 | /* Distribute the additional lines of the mini-window |
4900 | among the other windows. */ | |
86c8e823 GM |
4901 | Lisp_Object window; |
4902 | XSETWINDOW (window, w); | |
56ebfae2 | 4903 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4904 | } |
f984d4fc GM |
4905 | } |
4906 | ||
4907 | ||
4908 | \f | |
5500c422 GM |
4909 | /* Mark window cursors off for all windows in the window tree rooted |
4910 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4911 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4912 | the frame are cleared. */ | |
4913 | ||
4914 | void | |
971de7fb | 4915 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4916 | { |
4917 | while (w) | |
4918 | { | |
4919 | if (!NILP (w->hchild)) | |
4920 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4921 | else if (!NILP (w->vchild)) | |
4922 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4923 | else | |
4924 | w->phys_cursor_on_p = 0; | |
4925 | ||
4926 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4927 | } | |
4928 | } | |
4929 | ||
4930 | ||
e9c195b1 | 4931 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4932 | |
4933 | int | |
971de7fb | 4934 | window_internal_height (struct window *w) |
7ab12479 | 4935 | { |
949cf20f | 4936 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4937 | |
e9c195b1 GM |
4938 | if (!MINI_WINDOW_P (w)) |
4939 | { | |
4940 | if (!NILP (w->parent) | |
4941 | || !NILP (w->vchild) | |
4942 | || !NILP (w->hchild) | |
4943 | || !NILP (w->next) | |
4944 | || !NILP (w->prev) | |
4945 | || WINDOW_WANTS_MODELINE_P (w)) | |
4946 | --ht; | |
7ab12479 | 4947 | |
e9c195b1 GM |
4948 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4949 | --ht; | |
4950 | } | |
7ab12479 JB |
4951 | |
4952 | return ht; | |
4953 | } | |
5500c422 GM |
4954 | \f |
4955 | /************************************************************************ | |
4956 | Window Scrolling | |
4957 | ***********************************************************************/ | |
535e0b8e | 4958 | |
5500c422 | 4959 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4960 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4961 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4962 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4963 | means don't signal an error if we try to move over BEGV or ZV, | |
4964 | respectively. */ | |
7ab12479 | 4965 | |
101d1605 | 4966 | static void |
971de7fb | 4967 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 4968 | { |
cba59f77 RS |
4969 | immediate_quit = 1; |
4970 | ||
5500c422 GM |
4971 | /* If we must, use the pixel-based version which is much slower than |
4972 | the line-based one but can handle varying line heights. */ | |
4973 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4974 | window_scroll_pixel_based (window, n, whole, noerror); | |
4975 | else | |
4976 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4977 | |
4978 | immediate_quit = 0; | |
5500c422 GM |
4979 | } |
4980 | ||
4981 | ||
4982 | /* Implementation of window_scroll that works based on pixel line | |
4983 | heights. See the comment of window_scroll for parameter | |
4984 | descriptions. */ | |
4985 | ||
4986 | static void | |
971de7fb | 4987 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4988 | { |
4989 | struct it it; | |
4990 | struct window *w = XWINDOW (window); | |
4991 | struct text_pos start; | |
5500c422 | 4992 | int this_scroll_margin; |
9d14503e | 4993 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4994 | int vscrolled = 0; |
5a857365 | 4995 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4996 | |
4997 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4998 | |
5500c422 | 4999 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
5000 | the screen. Allow PT to be partially visible, otherwise |
5001 | something like (scroll-down 1) with PT in the line before | |
5002 | the partially visible one would recenter. */ | |
5a857365 KS |
5003 | |
5004 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
5005 | { |
5006 | /* Move backward half the height of the window. Performance note: | |
5007 | vmotion used here is about 10% faster, but would give wrong | |
5008 | results for variable height lines. */ | |
5009 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
5010 | it.current_y = it.last_visible_y; | |
f204989e | 5011 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 5012 | |
5500c422 GM |
5013 | /* The function move_iterator_vertically may move over more than |
5014 | the specified y-distance. If it->w is small, e.g. a | |
5015 | mini-buffer window, we may end up in front of the window's | |
5016 | display area. This is the case when Start displaying at the | |
5017 | start of the line containing PT in this case. */ | |
5018 | if (it.current_y <= 0) | |
5019 | { | |
5020 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 5021 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
5022 | it.current_y = 0; |
5023 | } | |
5024 | ||
5025 | start = it.current.pos; | |
5026 | } | |
e56263e5 KS |
5027 | else if (auto_window_vscroll_p) |
5028 | { | |
5a857365 | 5029 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
5030 | { |
5031 | int px; | |
5032 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5033 | if (whole) | |
e856c216 KS |
5034 | dy = max ((window_box_height (w) |
5035 | - next_screen_context_lines * dy), | |
5036 | dy); | |
e56263e5 KS |
5037 | dy *= n; |
5038 | ||
5a857365 | 5039 | if (n < 0) |
e56263e5 | 5040 | { |
5a857365 KS |
5041 | /* Only vscroll backwards if already vscrolled forwards. */ |
5042 | if (w->vscroll < 0 && rtop > 0) | |
5043 | { | |
5044 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
5045 | Fset_window_vscroll (window, make_number (px), Qt); | |
5046 | return; | |
5047 | } | |
e56263e5 | 5048 | } |
5a857365 | 5049 | if (n > 0) |
e56263e5 | 5050 | { |
5a857365 KS |
5051 | /* Do vscroll if already vscrolled or only display line. */ |
5052 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
5053 | { | |
5054 | px = max (0, -w->vscroll + min (rbot, dy)); | |
5055 | Fset_window_vscroll (window, make_number (px), Qt); | |
5056 | return; | |
5057 | } | |
5058 | ||
5059 | /* Maybe modify window start instead of scrolling. */ | |
5060 | if (rbot > 0 || w->vscroll < 0) | |
5061 | { | |
2452438f | 5062 | EMACS_INT spos; |
5a857365 KS |
5063 | |
5064 | Fset_window_vscroll (window, make_number (0), Qt); | |
5065 | /* If there are other text lines above the current row, | |
5066 | move window start to current row. Else to next row. */ | |
5067 | if (rbot > 0) | |
5068 | spos = XINT (Fline_beginning_position (Qnil)); | |
5069 | else | |
5070 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
5071 | set_marker_restricted (w->start, make_number (spos), | |
5072 | w->buffer); | |
5073 | w->start_at_line_beg = Qt; | |
5074 | w->update_mode_line = Qt; | |
5075 | XSETFASTINT (w->last_modified, 0); | |
5076 | XSETFASTINT (w->last_overlay_modified, 0); | |
5077 | /* Set force_start so that redisplay_window will run the | |
5078 | window-scroll-functions. */ | |
5079 | w->force_start = Qt; | |
5080 | return; | |
5081 | } | |
e56263e5 KS |
5082 | } |
5083 | } | |
5a857365 | 5084 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5085 | Fset_window_vscroll (window, make_number (0), Qt); |
5086 | } | |
5500c422 | 5087 | |
d0c38d63 | 5088 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5089 | point in the same window line as it is now, so get that line. */ |
5090 | if (!NILP (Vscroll_preserve_screen_position)) | |
5091 | { | |
c525d842 | 5092 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
5093 | calls to scroll-up, scroll-down and other commands that |
5094 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
5095 | possibility of point becoming "stuck" on a tall line when |
5096 | scrolling by one line. */ | |
66fe93d1 | 5097 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
5098 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
5099 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
5100 | { |
5101 | start_display (&it, w, start); | |
5102 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5103 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 5104 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 5105 | } |
5500c422 GM |
5106 | } |
5107 | else | |
c876b227 SM |
5108 | window_scroll_pixel_based_preserve_y |
5109 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
5110 | |
5111 | /* Move iterator it from start the specified distance forward or | |
5112 | backward. The result is the new window start. */ | |
5113 | start_display (&it, w, start); | |
5114 | if (whole) | |
5115 | { | |
2452438f | 5116 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
5117 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
5118 | dy = max ((window_box_height (w) | |
5119 | - next_screen_context_lines * dy), | |
5120 | dy) * n; | |
d72340d4 GM |
5121 | |
5122 | /* Note that move_it_vertically always moves the iterator to the | |
5123 | start of a line. So, if the last line doesn't have a newline, | |
5124 | we would end up at the start of the line ending at ZV. */ | |
5125 | if (dy <= 0) | |
e856c216 KS |
5126 | { |
5127 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5128 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5129 | looking at an image that is taller that the window height. */ |
5130 | while (start_pos == IT_CHARPOS (it) | |
5131 | && start_pos > BEGV) | |
e4cc2dfc | 5132 | move_it_by_lines (&it, -1); |
e856c216 | 5133 | } |
d72340d4 | 5134 | else if (dy > 0) |
bed83ee4 | 5135 | { |
bed83ee4 KS |
5136 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5137 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5138 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5139 | looking at an image that is taller that the window height. */ |
5140 | while (start_pos == IT_CHARPOS (it) | |
5141 | && start_pos < ZV) | |
e4cc2dfc | 5142 | move_it_by_lines (&it, 1); |
bed83ee4 | 5143 | } |
5500c422 GM |
5144 | } |
5145 | else | |
e4cc2dfc | 5146 | move_it_by_lines (&it, n); |
5500c422 | 5147 | |
96ae58c8 RS |
5148 | /* We failed if we find ZV is already on the screen (scrolling up, |
5149 | means there's nothing past the end), or if we can't start any | |
5150 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5151 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5152 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5153 | { |
5cdb3cf3 MB |
5154 | if (IT_CHARPOS (it) == ZV) |
5155 | { | |
07ce8b53 RS |
5156 | if (it.current_y < it.last_visible_y |
5157 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5158 | > it.last_visible_y)) |
a74eca50 GM |
5159 | { |
5160 | /* The last line was only partially visible, make it fully | |
5161 | visible. */ | |
5162 | w->vscroll = (it.last_visible_y | |
5163 | - it.current_y + it.max_ascent + it.max_descent); | |
5164 | adjust_glyphs (it.f); | |
5165 | } | |
5cdb3cf3 MB |
5166 | else if (noerror) |
5167 | return; | |
cf402f3f | 5168 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5169 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5170 | else |
ba96a5cf | 5171 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5172 | } |
5500c422 | 5173 | else |
5cdb3cf3 MB |
5174 | { |
5175 | if (w->vscroll != 0) | |
5176 | /* The first line was only partially visible, make it fully | |
5177 | visible. */ | |
5178 | w->vscroll = 0; | |
5179 | else if (noerror) | |
5180 | return; | |
5181 | else | |
ba96a5cf | 5182 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5183 | } |
5184 | ||
5185 | /* If control gets here, then we vscrolled. */ | |
5186 | ||
5187 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5188 | ||
5189 | /* Don't try to change the window start below. */ | |
5190 | vscrolled = 1; | |
5500c422 GM |
5191 | } |
5192 | ||
5cdb3cf3 MB |
5193 | if (! vscrolled) |
5194 | { | |
2452438f EZ |
5195 | EMACS_INT pos = IT_CHARPOS (it); |
5196 | EMACS_INT bytepos; | |
e68def1e AS |
5197 | |
5198 | /* If in the middle of a multi-glyph character move forward to | |
5199 | the next character. */ | |
5200 | if (in_display_vector_p (&it)) | |
5201 | { | |
5202 | ++pos; | |
5203 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5204 | } | |
5205 | ||
5cdb3cf3 | 5206 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5207 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5208 | w->buffer); |
dad67609 RS |
5209 | bytepos = XMARKER (w->start)->bytepos; |
5210 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5211 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5212 | w->update_mode_line = Qt; |
5213 | XSETFASTINT (w->last_modified, 0); | |
5214 | XSETFASTINT (w->last_overlay_modified, 0); | |
5215 | /* Set force_start so that redisplay_window will run the | |
5216 | window-scroll-functions. */ | |
5217 | w->force_start = Qt; | |
5218 | } | |
177c0ea7 | 5219 | |
dc297565 RS |
5220 | /* The rest of this function uses current_y in a nonstandard way, |
5221 | not including the height of the header line if any. */ | |
5500c422 | 5222 | it.current_y = it.vpos = 0; |
177c0ea7 | 5223 | |
940f53e5 RS |
5224 | /* Move PT out of scroll margins. |
5225 | This code wants current_y to be zero at the window start position | |
5226 | even if there is a header line. */ | |
5227 | this_scroll_margin = max (0, scroll_margin); | |
5228 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5229 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5230 | ||
5231 | if (n > 0) | |
5500c422 | 5232 | { |
940f53e5 RS |
5233 | /* We moved the window start towards ZV, so PT may be now |
5234 | in the scroll margin at the top. */ | |
5235 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5236 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5237 | && (NILP (Vscroll_preserve_screen_position) | |
5238 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5239 | /* We found PT at a legitimate height. Leave it alone. */ |
5240 | ; | |
66fe93d1 | 5241 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5242 | { |
fa3c3426 RS |
5243 | /* If we have a header line, take account of it. |
5244 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5245 | move_it_to (&it, -1, |
5246 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5247 | window_scroll_pixel_based_preserve_y |
5248 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5249 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5250 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5251 | } | |
5252 | else | |
5500c422 | 5253 | { |
5500c422 | 5254 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5255 | { |
5256 | int prev = it.current_y; | |
e4cc2dfc | 5257 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
5258 | if (prev == it.current_y) |
5259 | break; | |
5260 | } | |
5500c422 GM |
5261 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5262 | } | |
940f53e5 RS |
5263 | } |
5264 | else if (n < 0) | |
5265 | { | |
2452438f | 5266 | EMACS_INT charpos, bytepos; |
aed328bf | 5267 | int partial_p; |
940f53e5 | 5268 | |
66fe93d1 LT |
5269 | /* Save our position, for the |
5270 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5271 | charpos = IT_CHARPOS (it); |
5272 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5273 | |
940f53e5 RS |
5274 | /* We moved the window start towards BEGV, so PT may be now |
5275 | in the scroll margin at the bottom. */ | |
5276 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5277 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5278 | - this_scroll_margin - 1), | |
5279 | -1, | |
940f53e5 RS |
5280 | MOVE_TO_POS | MOVE_TO_Y); |
5281 | ||
aed328bf KS |
5282 | /* Save our position, in case it's correct. */ |
5283 | charpos = IT_CHARPOS (it); | |
5284 | bytepos = IT_BYTEPOS (it); | |
5285 | ||
5286 | /* See if point is on a partially visible line at the end. */ | |
5287 | if (it.what == IT_EOB) | |
5288 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5289 | else | |
5290 | { | |
e4cc2dfc | 5291 | move_it_by_lines (&it, 1); |
aed328bf KS |
5292 | partial_p = it.current_y > it.last_visible_y; |
5293 | } | |
5294 | ||
bdf4ec93 RS |
5295 | if (charpos == PT && !partial_p |
5296 | && (NILP (Vscroll_preserve_screen_position) | |
5297 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5298 | /* We found PT before we found the display margin, so PT is ok. */ |
5299 | ; | |
66fe93d1 | 5300 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5301 | { |
5302 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5303 | start_display (&it, w, start); | |
c525d842 CY |
5304 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5305 | here because we called start_display again and did not | |
5306 | alter it.current_y this time. */ | |
c876b227 SM |
5307 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5308 | window_scroll_pixel_based_preserve_y, -1, | |
5309 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5310 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5311 | } | |
5312 | else | |
5313 | { | |
aed328bf | 5314 | if (partial_p) |
5cdb3cf3 MB |
5315 | /* The last line was only partially visible, so back up two |
5316 | lines to make sure we're on a fully visible line. */ | |
5317 | { | |
e4cc2dfc | 5318 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
5319 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5320 | } | |
5321 | else | |
5322 | /* No, the position we saved is OK, so use it. */ | |
5323 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5324 | } |
5325 | } | |
5326 | } | |
5327 | ||
5328 | ||
5329 | /* Implementation of window_scroll that works based on screen lines. | |
5330 | See the comment of window_scroll for parameter descriptions. */ | |
5331 | ||
5332 | static void | |
971de7fb | 5333 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
5334 | { |
5335 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
5336 | /* Fvertical_motion enters redisplay, which can trigger |
5337 | fontification, which in turn can modify buffer text (e.g., if the | |
5338 | fontification functions replace escape sequences with faces, as | |
5339 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
5340 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
5341 | Lisp_Object opoint_marker = Fpoint_marker (); | |
2452438f | 5342 | register EMACS_INT pos, pos_byte; |
7ab12479 JB |
5343 | register int ht = window_internal_height (w); |
5344 | register Lisp_Object tem; | |
5345 | int lose; | |
5500c422 | 5346 | Lisp_Object bolp; |
2452438f | 5347 | EMACS_INT startpos; |
c876b227 | 5348 | Lisp_Object original_pos = Qnil; |
101d1605 | 5349 | |
d4e7cf01 GM |
5350 | /* If scrolling screen-fulls, compute the number of lines to |
5351 | scroll from the window's height. */ | |
5352 | if (whole) | |
5353 | n *= max (1, ht - next_screen_context_lines); | |
5354 | ||
101d1605 RS |
5355 | startpos = marker_position (w->start); |
5356 | ||
c876b227 SM |
5357 | if (!NILP (Vscroll_preserve_screen_position)) |
5358 | { | |
5359 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
5360 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
5361 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
5362 | { |
5363 | struct position posit | |
5364 | = *compute_motion (startpos, 0, 0, 0, | |
5365 | PT, ht, 0, | |
5366 | -1, XINT (w->hscroll), | |
5367 | 0, w); | |
5368 | window_scroll_preserve_vpos = posit.vpos; | |
5369 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5370 | } | |
5371 | ||
5372 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5373 | make_number (window_scroll_preserve_vpos)); | |
5374 | } | |
0a1f771a | 5375 | |
d834a2e9 | 5376 | XSETFASTINT (tem, PT); |
6ffdb539 | 5377 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5378 | |
265a9e55 | 5379 | if (NILP (tem)) |
7ab12479 | 5380 | { |
cd2be1dd | 5381 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5382 | startpos = PT; |
7ab12479 JB |
5383 | } |
5384 | ||
345d45b2 | 5385 | SET_PT (startpos); |
5ce7b543 | 5386 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5387 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5388 | pos = PT; |
b73ea88e | 5389 | pos_byte = PT_BYTE; |
7ab12479 | 5390 | bolp = Fbolp (); |
03ab8921 EZ |
5391 | SET_PT_BOTH (marker_position (opoint_marker), |
5392 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
5393 | |
5394 | if (lose) | |
f8026fd8 JB |
5395 | { |
5396 | if (noerror) | |
5397 | return; | |
5398 | else | |
ba96a5cf | 5399 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5400 | } |
7ab12479 JB |
5401 | |
5402 | if (pos < ZV) | |
7ab12479 | 5403 | { |
0c7da84e RS |
5404 | int this_scroll_margin = scroll_margin; |
5405 | ||
5406 | /* Don't use a scroll margin that is negative or too large. */ | |
5407 | if (this_scroll_margin < 0) | |
5408 | this_scroll_margin = 0; | |
5409 | ||
949cf20f KS |
5410 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5411 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5412 | |
b73ea88e | 5413 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5414 | w->start_at_line_beg = bolp; |
5415 | w->update_mode_line = Qt; | |
d834a2e9 | 5416 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5417 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5418 | /* Set force_start so that redisplay_window will run |
5419 | the window-scroll-functions. */ | |
5420 | w->force_start = Qt; | |
0c7da84e | 5421 | |
bdf4ec93 RS |
5422 | if (!NILP (Vscroll_preserve_screen_position) |
5423 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5424 | { |
b73ea88e | 5425 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5426 | Fvertical_motion (original_pos, window); |
0c7da84e | 5427 | } |
101d1605 RS |
5428 | /* If we scrolled forward, put point enough lines down |
5429 | that it is outside the scroll margin. */ | |
5430 | else if (n > 0) | |
0c7da84e | 5431 | { |
101d1605 RS |
5432 | int top_margin; |
5433 | ||
5434 | if (this_scroll_margin > 0) | |
5435 | { | |
b73ea88e | 5436 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5437 | Fvertical_motion (make_number (this_scroll_margin), window); |
5438 | top_margin = PT; | |
5439 | } | |
5440 | else | |
5441 | top_margin = pos; | |
5442 | ||
03ab8921 EZ |
5443 | if (top_margin <= marker_position (opoint_marker)) |
5444 | SET_PT_BOTH (marker_position (opoint_marker), | |
5445 | marker_byte_position (opoint_marker)); | |
5500c422 | 5446 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5447 | { |
b73ea88e | 5448 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5449 | Fvertical_motion (original_pos, window); |
101d1605 | 5450 | } |
9317a85d | 5451 | else |
335406fc | 5452 | SET_PT (top_margin); |
0c7da84e | 5453 | } |
101d1605 | 5454 | else if (n < 0) |
7ab12479 | 5455 | { |
101d1605 RS |
5456 | int bottom_margin; |
5457 | ||
0c7da84e RS |
5458 | /* If we scrolled backward, put point near the end of the window |
5459 | but not within the scroll margin. */ | |
b73ea88e | 5460 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5461 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5462 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5463 | bottom_margin = PT; | |
5464 | else | |
5465 | bottom_margin = PT + 1; | |
5466 | ||
03ab8921 EZ |
5467 | if (bottom_margin > marker_position (opoint_marker)) |
5468 | SET_PT_BOTH (marker_position (opoint_marker), | |
5469 | marker_byte_position (opoint_marker)); | |
7ab12479 | 5470 | else |
101d1605 | 5471 | { |
5500c422 | 5472 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5473 | { |
b73ea88e | 5474 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5475 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5476 | } |
5477 | else | |
5478 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5479 | } |
7ab12479 JB |
5480 | } |
5481 | } | |
5482 | else | |
f8026fd8 JB |
5483 | { |
5484 | if (noerror) | |
5485 | return; | |
5486 | else | |
ba96a5cf | 5487 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5488 | } |
7ab12479 | 5489 | } |
5500c422 GM |
5490 | |
5491 | ||
5492 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5493 | screen-full which is defined as the height of the window minus | |
5494 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5495 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5496 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5497 | |
5498 | static void | |
971de7fb | 5499 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 5500 | { |
331379bf | 5501 | int count = SPECPDL_INDEX (); |
7ab12479 | 5502 | |
1ea40aa2 | 5503 | xassert (eabs (direction) == 1); |
5500c422 GM |
5504 | |
5505 | /* If selected window's buffer isn't current, make it current for | |
5506 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5507 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5508 | { |
5509 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5510 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5511 | |
5512 | /* Make redisplay consider other windows than just selected_window. */ | |
5513 | ++windows_or_buffers_changed; | |
95605e15 | 5514 | } |
7ab12479 | 5515 | |
265a9e55 | 5516 | if (NILP (n)) |
d4e7cf01 | 5517 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5518 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5519 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5520 | else |
5521 | { | |
5522 | n = Fprefix_numeric_value (n); | |
101d1605 | 5523 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5524 | } |
95605e15 JB |
5525 | |
5526 | unbind_to (count, Qnil); | |
7ab12479 JB |
5527 | } |
5528 | ||
e0965597 | 5529 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5530 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5531 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5532 | A near full screen is `next-screen-context-lines' less than a full screen. |
5533 | Negative ARG means scroll downward. | |
5534 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5535 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5536 | (Lisp_Object arg) |
7ab12479 | 5537 | { |
413430c5 | 5538 | scroll_command (arg, 1); |
7ab12479 JB |
5539 | return Qnil; |
5540 | } | |
5541 | ||
e0965597 | 5542 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5543 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5544 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5545 | A near full screen is `next-screen-context-lines' less than a full screen. |
5546 | Negative ARG means scroll upward. | |
5547 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5548 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5549 | (Lisp_Object arg) |
7ab12479 | 5550 | { |
413430c5 | 5551 | scroll_command (arg, -1); |
7ab12479 JB |
5552 | return Qnil; |
5553 | } | |
ccd0664b RS |
5554 | \f |
5555 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5556 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5557 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5558 | showing that buffer is used. |
5559 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5560 | specifies the window. This takes precedence over | |
5561 | `other-window-scroll-buffer'. */) | |
5842a27b | 5562 | (void) |
7ab12479 | 5563 | { |
ccd0664b | 5564 | Lisp_Object window; |
7ab12479 JB |
5565 | |
5566 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5567 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5568 | window = Vminibuf_scroll_window; |
5569 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5570 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5571 | { |
5572 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5573 | if (NILP (window)) |
87478b52 | 5574 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5575 | } |
5576 | else | |
dbc4e1c1 JB |
5577 | { |
5578 | /* Nothing specified; look for a neighboring window on the same | |
5579 | frame. */ | |
5580 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5581 | ||
5582 | if (EQ (window, selected_window)) | |
5583 | /* That didn't get us anywhere; look for a window on another | |
5584 | visible frame. */ | |
5585 | do | |
5586 | window = Fnext_window (window, Qnil, Qt); | |
5587 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5588 | && ! EQ (window, selected_window)); | |
5589 | } | |
5590 | ||
b7826503 | 5591 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5592 | |
5593 | if (EQ (window, selected_window)) | |
5594 | error ("There is no other window"); | |
5595 | ||
ccd0664b RS |
5596 | return window; |
5597 | } | |
5598 | ||
5599 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5600 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5601 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5602 | The next window is the one below the current one; or the one at the top | |
5603 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5604 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5605 | When calling from a program, supply as argument a number, nil, or `-'. | |
5606 | ||
fdb82f93 | 5607 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5608 | showing that buffer, popping the buffer up if necessary. |
5609 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5610 | specifies the window to scroll. This takes precedence over | |
5611 | `other-window-scroll-buffer'. */) | |
5842a27b | 5612 | (Lisp_Object arg) |
ccd0664b | 5613 | { |
d4e7cf01 GM |
5614 | Lisp_Object window; |
5615 | struct window *w; | |
331379bf | 5616 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5617 | |
5618 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5619 | w = XWINDOW (window); |
7ab12479 JB |
5620 | |
5621 | /* Don't screw up if window_scroll gets an error. */ | |
5622 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5623 | ++windows_or_buffers_changed; |
7ab12479 JB |
5624 | |
5625 | Fset_buffer (w->buffer); | |
5626 | SET_PT (marker_position (w->pointm)); | |
5627 | ||
413430c5 | 5628 | if (NILP (arg)) |
d4e7cf01 | 5629 | window_scroll (window, 1, 1, 1); |
413430c5 | 5630 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5631 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5632 | else |
5633 | { | |
413430c5 EN |
5634 | if (CONSP (arg)) |
5635 | arg = Fcar (arg); | |
b7826503 | 5636 | CHECK_NUMBER (arg); |
101d1605 | 5637 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5638 | } |
5639 | ||
b73ea88e | 5640 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5641 | unbind_to (count, Qnil); |
7ab12479 JB |
5642 | |
5643 | return Qnil; | |
5644 | } | |
5645 | \f | |
e0965597 | 5646 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5647 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5648 | Default for ARG is window width minus 2. |
5649 | Value is the total amount of leftward horizontal scrolling in | |
5650 | effect after the change. | |
23fe745a | 5651 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5652 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5653 | will not scroll a window to a column less than the value returned |
dc297565 | 5654 | by this function. This happens in an interactive call. */) |
5842a27b | 5655 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5656 | { |
c67fa410 GM |
5657 | Lisp_Object result; |
5658 | int hscroll; | |
5659 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5660 | |
265a9e55 | 5661 | if (NILP (arg)) |
abde8f8c | 5662 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
5663 | else |
5664 | arg = Fprefix_numeric_value (arg); | |
5665 | ||
c67fa410 GM |
5666 | hscroll = XINT (w->hscroll) + XINT (arg); |
5667 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5668 | ||
dc297565 | 5669 | if (!NILP (set_minimum)) |
c67fa410 GM |
5670 | w->min_hscroll = w->hscroll; |
5671 | ||
5672 | return result; | |
7ab12479 JB |
5673 | } |
5674 | ||
e0965597 | 5675 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5676 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5677 | Default for ARG is window width minus 2. |
5678 | Value is the total amount of leftward horizontal scrolling in | |
5679 | effect after the change. | |
23fe745a | 5680 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5681 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5682 | will not scroll a window to a column less than the value returned |
dc297565 | 5683 | by this function. This happens in an interactive call. */) |
5842a27b | 5684 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5685 | { |
c67fa410 GM |
5686 | Lisp_Object result; |
5687 | int hscroll; | |
5688 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5689 | |
265a9e55 | 5690 | if (NILP (arg)) |
abde8f8c | 5691 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
5692 | else |
5693 | arg = Fprefix_numeric_value (arg); | |
5694 | ||
c67fa410 GM |
5695 | hscroll = XINT (w->hscroll) - XINT (arg); |
5696 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5697 | |
dc297565 | 5698 | if (!NILP (set_minimum)) |
c67fa410 GM |
5699 | w->min_hscroll = w->hscroll; |
5700 | ||
5701 | return result; | |
7ab12479 JB |
5702 | } |
5703 | ||
fa832261 KS |
5704 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5705 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5706 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5707 | (void) |
fa832261 KS |
5708 | { |
5709 | if (minibuf_level > 0 | |
5710 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5711 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5712 | return minibuf_selected_window; | |
5713 | ||
5714 | return Qnil; | |
5715 | } | |
5716 | ||
12c8b416 GM |
5717 | /* Value is the number of lines actually displayed in window W, |
5718 | as opposed to its height. */ | |
5719 | ||
5720 | static int | |
971de7fb | 5721 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5722 | { |
5723 | struct it it; | |
5724 | struct text_pos start; | |
5725 | int height = window_box_height (w); | |
5726 | struct buffer *old_buffer; | |
5727 | int bottom_y; | |
5728 | ||
5729 | if (XBUFFER (w->buffer) != current_buffer) | |
5730 | { | |
5731 | old_buffer = current_buffer; | |
5732 | set_buffer_internal (XBUFFER (w->buffer)); | |
5733 | } | |
5734 | else | |
5735 | old_buffer = NULL; | |
5736 | ||
521b203e GM |
5737 | /* In case W->start is out of the accessible range, do something |
5738 | reasonable. This happens in Info mode when Info-scroll-down | |
5739 | calls (recenter -1) while W->start is 1. */ | |
5740 | if (XMARKER (w->start)->charpos < BEGV) | |
5741 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5742 | else if (XMARKER (w->start)->charpos > ZV) | |
5743 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5744 | else | |
5745 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5746 | ||
12c8b416 GM |
5747 | start_display (&it, w, start); |
5748 | move_it_vertically (&it, height); | |
c8bc6f65 | 5749 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5750 | |
1de65f51 RS |
5751 | /* rms: On a non-window display, |
5752 | the value of it.vpos at the bottom of the screen | |
5753 | seems to be 1 larger than window_box_height (w). | |
5754 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5755 | when ZV is on the last screen line | |
5756 | moves to the previous screen line instead of the last one. */ | |
5757 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5758 | height++; | |
5759 | ||
12c8b416 GM |
5760 | /* Add in empty lines at the bottom of the window. */ |
5761 | if (bottom_y < height) | |
5762 | { | |
949cf20f | 5763 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5764 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5765 | } |
5766 | ||
c8bc6f65 GM |
5767 | if (old_buffer) |
5768 | set_buffer_internal (old_buffer); | |
5769 | ||
12c8b416 GM |
5770 | return it.vpos; |
5771 | } | |
5772 | ||
5773 | ||
a7ca3326 | 5774 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5775 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5776 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5777 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5778 | bottom of the window. (ARG should be less than the height of the window.) |
5779 | ||
666e158e MB |
5780 | If ARG is omitted or nil, then recenter with point on the middle line of |
5781 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5782 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5783 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5784 | height needed); if `recenter-redisplay' has the special value `tty', | |
5785 | then only tty frame are redrawn. | |
7d1d98ee | 5786 | |
fdb82f93 PJ |
5787 | Just C-u as prefix means put point in the center of the window |
5788 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5789 | (register Lisp_Object arg) |
7ab12479 | 5790 | { |
6df47b59 | 5791 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5792 | struct buffer *buf = XBUFFER (w->buffer); |
5793 | struct buffer *obuf = current_buffer; | |
6df47b59 | 5794 | int center_p = 0; |
2452438f | 5795 | EMACS_INT charpos, bytepos; |
d6550a9f | 5796 | int iarg IF_LINT (= 0); |
f6b43440 | 5797 | int this_scroll_margin; |
7ab12479 | 5798 | |
0fa5d25b RS |
5799 | /* If redisplay is suppressed due to an error, try again. */ |
5800 | obuf->display_error_modiff = 0; | |
5801 | ||
413430c5 | 5802 | if (NILP (arg)) |
7ab12479 | 5803 | { |
666e158e MB |
5804 | if (!NILP (Vrecenter_redisplay) |
5805 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5806 | || !NILP (Ftty_type (selected_frame)))) | |
5807 | { | |
5808 | int i; | |
f02d6d5c | 5809 | |
666e158e MB |
5810 | /* Invalidate pixel data calculated for all compositions. */ |
5811 | for (i = 0; i < n_compositions; i++) | |
5812 | composition_table[i]->font = NULL; | |
7ab12479 | 5813 | |
666e158e MB |
5814 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5815 | ||
5816 | Fredraw_frame (WINDOW_FRAME (w)); | |
5817 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5818 | } | |
7d1d98ee | 5819 | |
6df47b59 | 5820 | center_p = 1; |
7ab12479 | 5821 | } |
413430c5 | 5822 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5823 | center_p = 1; |
7ab12479 JB |
5824 | else |
5825 | { | |
413430c5 | 5826 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5827 | CHECK_NUMBER (arg); |
ae12ecd7 | 5828 | iarg = XINT (arg); |
7ab12479 JB |
5829 | } |
5830 | ||
478292ed | 5831 | set_buffer_internal (buf); |
7ab12479 | 5832 | |
f6b43440 RS |
5833 | /* Do this after making BUF current |
5834 | in case scroll_margin is buffer-local. */ | |
5835 | this_scroll_margin = max (0, scroll_margin); | |
5836 | this_scroll_margin = min (this_scroll_margin, | |
5837 | XFASTINT (w->total_lines) / 4); | |
5838 | ||
521b203e | 5839 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5840 | have variable-height lines and centering point on the basis of |
5841 | line counts would lead to strange effects. */ | |
521b203e | 5842 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5843 | { |
6df47b59 GM |
5844 | if (center_p) |
5845 | { | |
521b203e GM |
5846 | struct it it; |
5847 | struct text_pos pt; | |
177c0ea7 | 5848 | |
521b203e GM |
5849 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5850 | start_display (&it, w, pt); | |
f204989e | 5851 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5852 | charpos = IT_CHARPOS (it); |
5853 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5854 | } |
f6b43440 | 5855 | else if (iarg < 0) |
6df47b59 | 5856 | { |
521b203e GM |
5857 | struct it it; |
5858 | struct text_pos pt; | |
f6b43440 | 5859 | int nlines = -iarg; |
f204989e KS |
5860 | int extra_line_spacing; |
5861 | int h = window_box_height (w); | |
177c0ea7 | 5862 | |
f6b43440 RS |
5863 | iarg = - max (-iarg, this_scroll_margin); |
5864 | ||
521b203e GM |
5865 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5866 | start_display (&it, w, pt); | |
f204989e KS |
5867 | |
5868 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5869 | move_it_by_lines (&it, 0); |
521b203e | 5870 | |
d466fa4d | 5871 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5872 | height minus what's displayed in the line containing PT, |
5873 | and the lines below. */ | |
f204989e KS |
5874 | it.current_y = 0; |
5875 | it.vpos = 0; | |
e4cc2dfc | 5876 | move_it_by_lines (&it, nlines); |
d466fa4d | 5877 | |
f204989e KS |
5878 | if (it.vpos == nlines) |
5879 | h -= it.current_y; | |
5880 | else | |
5881 | { | |
5882 | /* Last line has no newline */ | |
5883 | h -= line_bottom_y (&it); | |
5884 | it.vpos++; | |
5885 | } | |
5886 | ||
5887 | /* Don't reserve space for extra line spacing of last line. */ | |
5888 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5889 | |
5890 | /* If we can't move down NLINES lines because we hit | |
5891 | the end of the buffer, count in some empty lines. */ | |
5892 | if (it.vpos < nlines) | |
f204989e KS |
5893 | { |
5894 | nlines -= it.vpos; | |
5895 | extra_line_spacing = it.extra_line_spacing; | |
5896 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5897 | } | |
5898 | if (h <= 0) | |
5899 | return Qnil; | |
201c831a | 5900 | |
f204989e | 5901 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5902 | start_display (&it, w, pt); |
f204989e KS |
5903 | it.current_y = 0; |
5904 | move_it_vertically_backward (&it, h); | |
5905 | ||
5906 | /* If extra line spacing is present, we may move too far | |
5907 | back. This causes the last line to be only partially | |
5908 | visible (which triggers redisplay to recenter that line | |
5909 | in the middle), so move forward. | |
5910 | But ignore extra line spacing on last line, as it is not | |
5911 | considered to be part of the visible height of the line. | |
5912 | */ | |
5913 | h += extra_line_spacing; | |
5914 | while (-it.current_y > h) | |
e4cc2dfc | 5915 | move_it_by_lines (&it, 1); |
f204989e | 5916 | |
521b203e GM |
5917 | charpos = IT_CHARPOS (it); |
5918 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5919 | } |
521b203e GM |
5920 | else |
5921 | { | |
5922 | struct position pos; | |
f6b43440 | 5923 | |
f6b43440 RS |
5924 | iarg = max (iarg, this_scroll_margin); |
5925 | ||
5926 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5927 | charpos = pos.bufpos; |
5928 | bytepos = pos.bytepos; | |
5929 | } | |
5930 | } | |
5931 | else | |
5932 | { | |
5933 | struct position pos; | |
5934 | int ht = window_internal_height (w); | |
5935 | ||
5936 | if (center_p) | |
a4429c5b | 5937 | iarg = ht / 2; |
f567c488 KS |
5938 | else if (iarg < 0) |
5939 | iarg += ht; | |
f6b43440 RS |
5940 | |
5941 | /* Don't let it get into the margin at either top or bottom. */ | |
5942 | iarg = max (iarg, this_scroll_margin); | |
5943 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5944 | |
f6b43440 | 5945 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5946 | charpos = pos.bufpos; |
5947 | bytepos = pos.bytepos; | |
5948 | } | |
5949 | ||
5950 | /* Set the new window start. */ | |
5951 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5952 | w->window_end_valid = Qnil; |
177c0ea7 | 5953 | |
95605b1b RS |
5954 | w->optional_new_start = Qt; |
5955 | ||
6df47b59 GM |
5956 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5957 | w->start_at_line_beg = Qt; | |
5958 | else | |
5959 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5960 | |
478292ed | 5961 | set_buffer_internal (obuf); |
7ab12479 JB |
5962 | return Qnil; |
5963 | } | |
b7617575 GM |
5964 | |
5965 | ||
81fe0836 | 5966 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5967 | 0, 1, 0, |
5968 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5969 | WINDOW defaults to the selected window. |
8fef9de1 | 5970 | |
f039b2d2 CY |
5971 | The return value does not include the mode line, any header line, nor |
5972 | any partial-height lines in the text display area. */) | |
5842a27b | 5973 | (Lisp_Object window) |
81fe0836 MB |
5974 | { |
5975 | struct window *w = decode_window (window); | |
5976 | int pixel_height = window_box_height (w); | |
949cf20f | 5977 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5978 | return make_number (line_height); |
5979 | } | |
5980 | ||
5981 | ||
7ab12479 JB |
5982 | \f |
5983 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5984 | 1, 1, "P", |
5985 | doc: /* Position point relative to window. | |
5986 | With no argument, position point at center of window. | |
5987 | An argument specifies vertical position within the window; | |
5988 | zero means top of window, negative means relative to bottom of window. */) | |
5842a27b | 5989 | (Lisp_Object arg) |
7ab12479 | 5990 | { |
b7617575 GM |
5991 | struct window *w = XWINDOW (selected_window); |
5992 | int lines, start; | |
540b6aa0 | 5993 | Lisp_Object window; |
f6b43440 RS |
5994 | #if 0 |
5995 | int this_scroll_margin; | |
5996 | #endif | |
7ab12479 | 5997 | |
794b75c7 SM |
5998 | if (!(BUFFERP (w->buffer) |
5999 | && XBUFFER (w->buffer) == current_buffer)) | |
6000 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer | |
6001 | when passed below to set_marker_both. */ | |
6002 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 6003 | |
b7617575 | 6004 | window = selected_window; |
7ab12479 JB |
6005 | start = marker_position (w->start); |
6006 | if (start < BEGV || start > ZV) | |
6007 | { | |
b7617575 | 6008 | int height = window_internal_height (w); |
cd2be1dd | 6009 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 6010 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
6011 | w->start_at_line_beg = Fbolp (); |
6012 | w->force_start = Qt; | |
6013 | } | |
6014 | else | |
b73ea88e | 6015 | Fgoto_char (w->start); |
7ab12479 | 6016 | |
b7617575 | 6017 | lines = displayed_window_lines (w); |
f6b43440 RS |
6018 | |
6019 | #if 0 | |
6020 | this_scroll_margin = max (0, scroll_margin); | |
6021 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
6022 | #endif | |
6023 | ||
b7617575 GM |
6024 | if (NILP (arg)) |
6025 | XSETFASTINT (arg, lines / 2); | |
6026 | else | |
6027 | { | |
f6b43440 RS |
6028 | int iarg = XINT (Fprefix_numeric_value (arg)); |
6029 | ||
6030 | if (iarg < 0) | |
6031 | iarg = iarg + lines; | |
6032 | ||
6033 | #if 0 /* This code would prevent move-to-window-line from moving point | |
6034 | to a place inside the scroll margins (which would cause the | |
6035 | next redisplay to scroll). I wrote this code, but then concluded | |
6036 | it is probably better not to install it. However, it is here | |
6037 | inside #if 0 so as not to lose it. -- rms. */ | |
6038 | ||
6039 | /* Don't let it get into the margin at either top or bottom. */ | |
6040 | iarg = max (iarg, this_scroll_margin); | |
6041 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
6042 | #endif | |
6043 | ||
6044 | arg = make_number (iarg); | |
b7617575 GM |
6045 | } |
6046 | ||
c8bc6f65 | 6047 | /* Skip past a partially visible first line. */ |
163784df | 6048 | if (w->vscroll) |
163784df MB |
6049 | XSETINT (arg, XINT (arg) + 1); |
6050 | ||
540b6aa0 | 6051 | return Fvertical_motion (arg, window); |
7ab12479 | 6052 | } |
5500c422 GM |
6053 | |
6054 | ||
7ab12479 | 6055 | \f |
5500c422 GM |
6056 | /*********************************************************************** |
6057 | Window Configuration | |
6058 | ***********************************************************************/ | |
6059 | ||
7ab12479 JB |
6060 | struct save_window_data |
6061 | { | |
b102ceb1 | 6062 | struct vectorlike_header header; |
bdc727bf | 6063 | Lisp_Object selected_frame; |
7ab12479 JB |
6064 | Lisp_Object current_window; |
6065 | Lisp_Object current_buffer; | |
6066 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 6067 | Lisp_Object minibuf_selected_window; |
7ab12479 | 6068 | Lisp_Object root_window; |
bdc727bf | 6069 | Lisp_Object focus_frame; |
cbff28e8 RS |
6070 | /* A vector, each of whose elements is a struct saved_window |
6071 | for one window. */ | |
7ab12479 | 6072 | Lisp_Object saved_windows; |
b05b4e27 SM |
6073 | |
6074 | /* All fields above are traced by the GC. | |
6075 | From `fame-cols' down, the fields are ignored by the GC. */ | |
6076 | ||
6077 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
6078 | int frame_tool_bar_lines; | |
7ab12479 | 6079 | }; |
ff06df24 | 6080 | |
cbff28e8 | 6081 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6082 | struct saved_window |
ea68264b | 6083 | { |
b102ceb1 | 6084 | struct vectorlike_header header; |
ea68264b GM |
6085 | Lisp_Object window; |
6086 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6087 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6088 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6089 | Lisp_Object parent, prev; |
6090 | Lisp_Object start_at_line_beg; | |
6091 | Lisp_Object display_table; | |
949cf20f KS |
6092 | Lisp_Object orig_top_line, orig_total_lines; |
6093 | Lisp_Object left_margin_cols, right_margin_cols; | |
6094 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6095 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 6096 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
6097 | }; |
6098 | ||
7ab12479 JB |
6099 | #define SAVED_WINDOW_N(swv,n) \ |
6100 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6101 | ||
6102 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 6103 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 6104 | (Lisp_Object object) |
7ab12479 | 6105 | { |
6ad0381c | 6106 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6107 | } |
6108 | ||
3f8ab7bd | 6109 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 6110 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 6111 | (Lisp_Object config) |
3f8ab7bd RS |
6112 | { |
6113 | register struct save_window_data *data; | |
6114 | struct Lisp_Vector *saved_windows; | |
6115 | ||
663fbbba | 6116 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6117 | |
6118 | data = (struct save_window_data *) XVECTOR (config); | |
6119 | saved_windows = XVECTOR (data->saved_windows); | |
6120 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6121 | } | |
6122 | ||
a7ca3326 | 6123 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6124 | Sset_window_configuration, 1, 1, 0, |
6125 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6126 | CONFIGURATION must be a value previously returned | |
6127 | by `current-window-configuration' (which see). | |
6128 | If CONFIGURATION was made from a frame that is now deleted, | |
6129 | only frame-independent values can be restored. In this case, | |
6130 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 6131 | (Lisp_Object configuration) |
7ab12479 | 6132 | { |
7ab12479 JB |
6133 | register struct save_window_data *data; |
6134 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6135 | Lisp_Object new_current_buffer; |
fd482be5 | 6136 | Lisp_Object frame; |
44fa5b1e | 6137 | FRAME_PTR f; |
2452438f | 6138 | EMACS_INT old_point = -1; |
7ab12479 | 6139 | |
663fbbba | 6140 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6141 | |
2f83aebe | 6142 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6143 | saved_windows = XVECTOR (data->saved_windows); |
6144 | ||
7ab12479 | 6145 | new_current_buffer = data->current_buffer; |
4b4deea2 | 6146 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
7ab12479 | 6147 | new_current_buffer = Qnil; |
72695e47 | 6148 | else |
73cadfc1 DK |
6149 | { |
6150 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6151 | /* The code further down "preserves point" by saving here PT in |
6152 | old_point and then setting it later back into PT. When the | |
6153 | current-selected-window and the final-selected-window both show | |
6154 | the current buffer, this suffers from the problem that the | |
6155 | current PT is the window-point of the current-selected-window, | |
6156 | while the final PT is the point of the final-selected-window, so | |
6157 | this copy from one PT to the other would end up moving the | |
6158 | window-point of the final-selected-window to the window-point of | |
6159 | the current-selected-window. So we have to be careful which | |
6160 | point of the current-buffer we copy into old_point. */ | |
6161 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6162 | && WINDOWP (selected_window) | |
6163 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6164 | && !EQ (selected_window, data->current_window)) | |
6165 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6166 | else | |
6167 | old_point = PT; | |
73cadfc1 | 6168 | else |
203eb0aa SM |
6169 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6170 | point in new_current_buffer as of the last time this buffer was | |
6171 | used. This can be non-deterministic since it can be changed by | |
6172 | things like jit-lock by mere temporary selection of some random | |
6173 | window that happens to show this buffer. | |
6174 | So if possible we want this arbitrary choice of "which point" to | |
6175 | be the one from the to-be-selected-window so as to prevent this | |
6176 | window's cursor from being copied from another window. */ | |
6177 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6178 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6179 | && !EQ (selected_window, data->current_window)) | |
6180 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6181 | else | |
6182 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6183 | } |
7ab12479 | 6184 | |
fd482be5 JB |
6185 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6186 | f = XFRAME (frame); | |
177c0ea7 | 6187 | |
fd482be5 JB |
6188 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6189 | However, there is other stuff we should still try to do below. */ | |
6190 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6191 | { |
fd482be5 JB |
6192 | register struct window *w; |
6193 | register struct saved_window *p; | |
5500c422 GM |
6194 | struct window *root_window; |
6195 | struct window **leaf_windows; | |
6196 | int n_leaf_windows; | |
c4280705 | 6197 | int k, i, n; |
fd482be5 JB |
6198 | |
6199 | /* If the frame has been resized since this window configuration was | |
6200 | made, we change the frame to the size specified in the | |
6201 | configuration, restore the configuration, and then resize it | |
6202 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6203 | int previous_frame_lines = FRAME_LINES (f); |
6204 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6205 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6206 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6207 | |
d2b35234 RS |
6208 | /* The mouse highlighting code could get screwed up |
6209 | if it runs during this. */ | |
6210 | BLOCK_INPUT; | |
6211 | ||
b05b4e27 SM |
6212 | if (data->frame_lines != previous_frame_lines |
6213 | || data->frame_cols != previous_frame_cols) | |
6214 | change_frame_size (f, data->frame_lines, | |
6215 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 6216 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 6217 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 6218 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
6219 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6220 | make_number (0)); | |
4314246f | 6221 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6222 | if (data->frame_tool_bar_lines |
9ea173e8 | 6223 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6224 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6225 | make_number (0)); | |
4314246f | 6226 | #endif |
217f2871 | 6227 | #endif |
fd482be5 | 6228 | |
a46c0153 RS |
6229 | /* "Swap out" point from the selected window's buffer |
6230 | into the window itself. (Normally the pointm of the selected | |
6231 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6232 | restoring the window contents, and prevent it from |
6233 | being done later on when we select a new window. */ | |
596ae0cf RS |
6234 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6235 | { | |
6236 | w = XWINDOW (selected_window); | |
6237 | set_marker_both (w->pointm, | |
6238 | w->buffer, | |
6239 | BUF_PT (XBUFFER (w->buffer)), | |
6240 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6241 | } | |
6242 | ||
fd482be5 | 6243 | windows_or_buffers_changed++; |
29aeee73 | 6244 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6245 | |
5500c422 | 6246 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6247 | is a serious redisplay flickering problem. What we would |
5500c422 | 6248 | really like to do is to free only those matrices not reused |
9d14503e | 6249 | below. */ |
5500c422 GM |
6250 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
6251 | leaf_windows | |
6252 | = (struct window **) alloca (count_windows (root_window) | |
6253 | * sizeof (struct window *)); | |
6254 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6255 | ||
fd482be5 JB |
6256 | /* Kludge Alert! |
6257 | Mark all windows now on frame as "deleted". | |
6258 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6259 | |
fd482be5 JB |
6260 | Save their current buffers in their height fields, since we may |
6261 | need it later, if a buffer saved in the configuration is now | |
6262 | dead. */ | |
6263 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6264 | ||
eab3844f | 6265 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
6266 | { |
6267 | p = SAVED_WINDOW_N (saved_windows, k); | |
6268 | w = XWINDOW (p->window); | |
6269 | w->next = Qnil; | |
7ab12479 | 6270 | |
fd482be5 JB |
6271 | if (!NILP (p->parent)) |
6272 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6273 | XFASTINT (p->parent))->window; | |
6274 | else | |
6275 | w->parent = Qnil; | |
7ab12479 | 6276 | |
fd482be5 | 6277 | if (!NILP (p->prev)) |
7ab12479 | 6278 | { |
fd482be5 JB |
6279 | w->prev = SAVED_WINDOW_N (saved_windows, |
6280 | XFASTINT (p->prev))->window; | |
6281 | XWINDOW (w->prev)->next = p->window; | |
6282 | } | |
6283 | else | |
6284 | { | |
6285 | w->prev = Qnil; | |
6286 | if (!NILP (w->parent)) | |
6287 | { | |
949cf20f | 6288 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6289 | { |
6290 | XWINDOW (w->parent)->vchild = p->window; | |
6291 | XWINDOW (w->parent)->hchild = Qnil; | |
6292 | } | |
6293 | else | |
6294 | { | |
6295 | XWINDOW (w->parent)->hchild = p->window; | |
6296 | XWINDOW (w->parent)->vchild = Qnil; | |
6297 | } | |
6298 | } | |
6299 | } | |
6300 | ||
6301 | /* If we squirreled away the buffer in the window's height, | |
6302 | restore it now. */ | |
949cf20f KS |
6303 | if (BUFFERP (w->total_lines)) |
6304 | w->buffer = w->total_lines; | |
6305 | w->left_col = p->left_col; | |
6306 | w->top_line = p->top_line; | |
6307 | w->total_cols = p->total_cols; | |
6308 | w->total_lines = p->total_lines; | |
fd482be5 | 6309 | w->hscroll = p->hscroll; |
ea68264b | 6310 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6311 | w->display_table = p->display_table; |
949cf20f KS |
6312 | w->orig_top_line = p->orig_top_line; |
6313 | w->orig_total_lines = p->orig_total_lines; | |
6314 | w->left_margin_cols = p->left_margin_cols; | |
6315 | w->right_margin_cols = p->right_margin_cols; | |
6316 | w->left_fringe_width = p->left_fringe_width; | |
6317 | w->right_fringe_width = p->right_fringe_width; | |
6318 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6319 | w->scroll_bar_width = p->scroll_bar_width; | |
6320 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6321 | w->dedicated = p->dedicated; |
047aaeb9 | 6322 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6323 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6324 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6325 | |
6326 | /* Reinstall the saved buffer and pointers into it. */ | |
6327 | if (NILP (p->buffer)) | |
6328 | w->buffer = p->buffer; | |
6329 | else | |
6330 | { | |
4b4deea2 | 6331 | if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
fd482be5 JB |
6332 | /* If saved buffer is alive, install it. */ |
6333 | { | |
6334 | w->buffer = p->buffer; | |
6335 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6336 | set_marker_restricted (w->start, p->start, w->buffer); |
6337 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
4b4deea2 | 6338 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), |
b73ea88e | 6339 | p->mark, w->buffer); |
fd482be5 JB |
6340 | |
6341 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6342 | restore the location of point in the buffer which was |
6343 | current when the window configuration was recorded. */ | |
6b54027b RS |
6344 | if (!EQ (p->buffer, new_current_buffer) |
6345 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6346 | Fgoto_char (w->pointm); |
6347 | } | |
4b4deea2 | 6348 | else if (NILP (w->buffer) || NILP (BVAR (XBUFFER (w->buffer), name))) |
52a68e98 | 6349 | /* Else unless window has a live buffer, get one. */ |
7ab12479 | 6350 | { |
fd482be5 JB |
6351 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6352 | /* This will set the markers to beginning of visible | |
6353 | range. */ | |
6354 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6355 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6356 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6357 | } |
6358 | else | |
fd482be5 | 6359 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6360 | are real. */ |
7ab12479 | 6361 | { |
fd482be5 JB |
6362 | /* Set window markers at start of visible range. */ |
6363 | if (XMARKER (w->start)->buffer == 0) | |
6364 | set_marker_restricted (w->start, make_number (0), | |
6365 | w->buffer); | |
6366 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6367 | set_marker_restricted_both (w->pointm, w->buffer, |
6368 | BUF_PT (XBUFFER (w->buffer)), | |
6369 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6370 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6371 | } |
6372 | } | |
6373 | } | |
9ace597f | 6374 | |
fd482be5 | 6375 | FRAME_ROOT_WINDOW (f) = data->root_window; |
a46c0153 RS |
6376 | |
6377 | /* Arrange *not* to restore point in the buffer that was | |
6378 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6379 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6380 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6381 | make_number (old_point), |
243a5ce6 | 6382 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6383 | |
6dc1d2d3 MR |
6384 | /* In the following call to `select-window, prevent "swapping |
6385 | out point" in the old selected window using the buffer that | |
6386 | has been restored into it. We already swapped out that point | |
6387 | from that window's old buffer. */ | |
e6b84b30 | 6388 | select_window (data->current_window, Qnil, 1); |
4b4deea2 | 6389 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 6390 | = selected_window; |
7ab12479 | 6391 | |
db269683 | 6392 | if (NILP (data->focus_frame) |
017b2bad | 6393 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6394 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6395 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6396 | |
fd482be5 | 6397 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
6398 | if (previous_frame_lines != FRAME_LINES (f) |
6399 | || previous_frame_cols != FRAME_COLS (f)) | |
6400 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6401 | 0, 0, 0); |
e3678b64 | 6402 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6403 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6404 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6405 | make_number (0)); | |
4314246f | 6406 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6407 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6408 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6409 | make_number (0)); | |
4314246f | 6410 | #endif |
217f2871 | 6411 | #endif |
d2b35234 | 6412 | |
5500c422 | 6413 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6414 | for (i = n = 0; i < n_leaf_windows; ++i) |
6415 | { | |
6416 | if (NILP (leaf_windows[i]->buffer)) | |
6417 | { | |
6418 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6419 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6420 | && NILP (leaf_windows[i]->vchild)); |
6421 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6422 | } |
6423 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6424 | ++n; | |
6425 | } | |
177c0ea7 | 6426 | |
5500c422 GM |
6427 | adjust_glyphs (f); |
6428 | ||
d2b35234 | 6429 | UNBLOCK_INPUT; |
756b6edc | 6430 | |
478292ed RS |
6431 | /* Fselect_window will have made f the selected frame, so we |
6432 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6433 | selected window too, but that doesn't make the call to | |
6434 | Fselect_window above totally superfluous; it still sets f's | |
6435 | selected window. */ | |
6436 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6437 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6438 | |
eeca6f6f | 6439 | run_window_configuration_change_hook (f); |
478292ed | 6440 | } |
bdc727bf JB |
6441 | |
6442 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6443 | Fset_buffer (new_current_buffer); |
bdc727bf | 6444 | |
478292ed | 6445 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6446 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6447 | |
3f8ab7bd | 6448 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6449 | } |
6450 | ||
44fa5b1e | 6451 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6452 | by setting their buffers to nil. */ |
6453 | ||
fd482be5 | 6454 | void |
971de7fb | 6455 | delete_all_subwindows (register struct window *w) |
7ab12479 | 6456 | { |
265a9e55 | 6457 | if (!NILP (w->next)) |
7ab12479 | 6458 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6459 | if (!NILP (w->vchild)) |
7ab12479 | 6460 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6461 | if (!NILP (w->hchild)) |
7ab12479 | 6462 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6463 | |
949cf20f | 6464 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6465 | |
86e48436 RS |
6466 | if (!NILP (w->buffer)) |
6467 | unshow_buffer (w); | |
6468 | ||
605be8af JB |
6469 | /* We set all three of these fields to nil, to make sure that we can |
6470 | distinguish this dead window from any live window. Live leaf | |
6471 | windows will have buffer set, and combination windows will have | |
6472 | vchild or hchild set. */ | |
6473 | w->buffer = Qnil; | |
6474 | w->vchild = Qnil; | |
6475 | w->hchild = Qnil; | |
acf70840 GM |
6476 | |
6477 | Vwindow_list = Qnil; | |
7ab12479 JB |
6478 | } |
6479 | \f | |
6480 | static int | |
971de7fb | 6481 | count_windows (register struct window *window) |
7ab12479 JB |
6482 | { |
6483 | register int count = 1; | |
265a9e55 | 6484 | if (!NILP (window->next)) |
7ab12479 | 6485 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6486 | if (!NILP (window->vchild)) |
7ab12479 | 6487 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6488 | if (!NILP (window->hchild)) |
7ab12479 JB |
6489 | count += count_windows (XWINDOW (window->hchild)); |
6490 | return count; | |
6491 | } | |
6492 | ||
5500c422 | 6493 | |
177c0ea7 | 6494 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6495 | Value is last index + 1. */ |
6496 | ||
6497 | static int | |
971de7fb | 6498 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
6499 | { |
6500 | while (w) | |
6501 | { | |
6502 | if (!NILP (w->hchild)) | |
6503 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6504 | else if (!NILP (w->vchild)) | |
6505 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6506 | else |
5500c422 GM |
6507 | flat[i++] = w; |
6508 | ||
6509 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6510 | } | |
6511 | ||
6512 | return i; | |
6513 | } | |
6514 | ||
6515 | ||
6516 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6517 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6518 | can be returned. */ | |
6519 | ||
6520 | struct glyph * | |
971de7fb | 6521 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6522 | { |
6523 | struct glyph_row *row; | |
6524 | struct glyph *glyph; | |
6525 | ||
6526 | if (w->phys_cursor.vpos >= 0 | |
6527 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6528 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6529 | row->enabled_p) | |
6530 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6531 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6532 | else | |
6533 | glyph = NULL; | |
6534 | ||
6535 | return glyph; | |
6536 | } | |
6537 | ||
6538 | ||
7ab12479 | 6539 | static int |
971de7fb | 6540 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6541 | { |
6542 | register struct saved_window *p; | |
6543 | register struct window *w; | |
6544 | register Lisp_Object tem; | |
6545 | ||
265a9e55 | 6546 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6547 | { |
6548 | p = SAVED_WINDOW_N (vector, i); | |
6549 | w = XWINDOW (window); | |
6550 | ||
2a1893f4 | 6551 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6552 | p->window = window; |
6553 | p->buffer = w->buffer; | |
949cf20f KS |
6554 | p->left_col = w->left_col; |
6555 | p->top_line = w->top_line; | |
6556 | p->total_cols = w->total_cols; | |
6557 | p->total_lines = w->total_lines; | |
7ab12479 | 6558 | p->hscroll = w->hscroll; |
ea68264b | 6559 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6560 | p->display_table = w->display_table; |
949cf20f KS |
6561 | p->orig_top_line = w->orig_top_line; |
6562 | p->orig_total_lines = w->orig_total_lines; | |
6563 | p->left_margin_cols = w->left_margin_cols; | |
6564 | p->right_margin_cols = w->right_margin_cols; | |
6565 | p->left_fringe_width = w->left_fringe_width; | |
6566 | p->right_fringe_width = w->right_fringe_width; | |
6567 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6568 | p->scroll_bar_width = w->scroll_bar_width; | |
6569 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6570 | p->dedicated = w->dedicated; |
047aaeb9 | 6571 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6572 | if (!NILP (w->buffer)) |
7ab12479 JB |
6573 | { |
6574 | /* Save w's value of point in the window configuration. | |
6575 | If w is the selected window, then get the value of point | |
6576 | from the buffer; pointm is garbage in the selected window. */ | |
6577 | if (EQ (window, selected_window)) | |
6578 | { | |
6579 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6580 | set_marker_both (p->pointm, w->buffer, |
6581 | BUF_PT (XBUFFER (w->buffer)), | |
6582 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6583 | } |
6584 | else | |
eeb82665 | 6585 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6586 | |
eeb82665 | 6587 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6588 | p->start_at_line_beg = w->start_at_line_beg; |
6589 | ||
4b4deea2 | 6590 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6591 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6592 | } |
6593 | else | |
6594 | { | |
6595 | p->pointm = Qnil; | |
6596 | p->start = Qnil; | |
6597 | p->mark = Qnil; | |
6598 | p->start_at_line_beg = Qnil; | |
6599 | } | |
6600 | ||
265a9e55 | 6601 | if (NILP (w->parent)) |
7ab12479 JB |
6602 | p->parent = Qnil; |
6603 | else | |
6604 | p->parent = XWINDOW (w->parent)->temslot; | |
6605 | ||
265a9e55 | 6606 | if (NILP (w->prev)) |
7ab12479 JB |
6607 | p->prev = Qnil; |
6608 | else | |
6609 | p->prev = XWINDOW (w->prev)->temslot; | |
6610 | ||
265a9e55 | 6611 | if (!NILP (w->vchild)) |
7ab12479 | 6612 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6613 | if (!NILP (w->hchild)) |
7ab12479 JB |
6614 | i = save_window_save (w->hchild, vector, i); |
6615 | } | |
6616 | ||
6617 | return i; | |
6618 | } | |
6619 | ||
a7ca3326 | 6620 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6621 | Scurrent_window_configuration, 0, 1, 0, |
6622 | doc: /* Return an object representing the current window configuration of FRAME. | |
6623 | If FRAME is nil or omitted, use the selected frame. | |
6624 | This describes the number of windows, their sizes and current buffers, | |
6625 | and for each displayed buffer, where display starts, and the positions of | |
6626 | point and mark. An exception is made for point in the current buffer: | |
6627 | its value is -not- saved. | |
6628 | This also records the currently selected frame, and FRAME's focus | |
6629 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 6630 | (Lisp_Object frame) |
7ab12479 JB |
6631 | { |
6632 | register Lisp_Object tem; | |
6633 | register int n_windows; | |
6634 | register struct save_window_data *data; | |
6635 | register int i; | |
44fa5b1e | 6636 | FRAME_PTR f; |
43bad991 | 6637 | |
44fa5b1e | 6638 | if (NILP (frame)) |
1ae1a37d | 6639 | frame = selected_frame; |
b7826503 | 6640 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6641 | f = XFRAME (frame); |
7ab12479 | 6642 | |
44fa5b1e | 6643 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6644 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6645 | PVEC_WINDOW_CONFIGURATION); | |
6646 | ||
6647 | data->frame_cols = FRAME_COLS (f); | |
6648 | data->frame_lines = FRAME_LINES (f); | |
6649 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6650 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6651 | data->selected_frame = selected_frame; |
44fa5b1e | 6652 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6653 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6654 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6655 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6656 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6657 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6658 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6659 | data->saved_windows = tem; | |
6660 | for (i = 0; i < n_windows; i++) | |
6661 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6662 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6663 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6664 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6665 | return (tem); |
6666 | } | |
6667 | ||
94e16dd5 KS |
6668 | \f |
6669 | /*********************************************************************** | |
6670 | Window Split Tree | |
6671 | ***********************************************************************/ | |
6672 | ||
6673 | static Lisp_Object | |
971de7fb | 6674 | window_tree (struct window *w) |
94e16dd5 KS |
6675 | { |
6676 | Lisp_Object tail = Qnil; | |
6677 | Lisp_Object result = Qnil; | |
6678 | ||
6679 | while (w) | |
6680 | { | |
6681 | Lisp_Object wn; | |
6682 | ||
6683 | XSETWINDOW (wn, w); | |
6684 | if (!NILP (w->hchild)) | |
6685 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6686 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6687 | else if (!NILP (w->vchild)) |
6688 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6689 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6690 | |
6691 | if (NILP (result)) | |
6692 | { | |
6693 | result = tail = Fcons (wn, Qnil); | |
6694 | } | |
6695 | else | |
6696 | { | |
6697 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6698 | tail = XCDR (tail); | |
6699 | } | |
6700 | ||
6701 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6702 | } | |
6703 | ||
6704 | return result; | |
6705 | } | |
6706 | ||
6707 | ||
6708 | ||
c16e1cc3 | 6709 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6710 | 0, 1, 0, |
c16e1cc3 | 6711 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6712 | |
6713 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6714 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6715 | is the frame's minibuffer window. |
6716 | ||
6717 | If the root window is not split, ROOT is the root window itself. | |
6718 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6719 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6720 | size and position of the subwindows in the split, and the rest of the |
6721 | elements are the subwindows in the split. Each of the subwindows may | |
6722 | again be a window or a list representing a window split, and so on. | |
6723 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6724 | ||
6725 | If FRAME is nil or omitted, return information on the currently | |
6726 | selected frame. */) | |
5842a27b | 6727 | (Lisp_Object frame) |
94e16dd5 | 6728 | { |
94e16dd5 KS |
6729 | FRAME_PTR f; |
6730 | ||
6731 | if (NILP (frame)) | |
6732 | frame = selected_frame; | |
6733 | ||
6734 | CHECK_FRAME (frame); | |
6735 | f = XFRAME (frame); | |
6736 | ||
6737 | if (!FRAME_LIVE_P (f)) | |
6738 | return Qnil; | |
6739 | ||
c16e1cc3 | 6740 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6741 | } |
6742 | ||
5500c422 GM |
6743 | \f |
6744 | /*********************************************************************** | |
6745 | Marginal Areas | |
6746 | ***********************************************************************/ | |
6747 | ||
6748 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6749 | 2, 3, 0, |
fdb82f93 | 6750 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6751 | If WINDOW is nil, set margins of the currently selected window. |
6752 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6753 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6754 | does the same for the right marginal area. A nil width parameter | |
6755 | means no margin. */) | |
5842a27b | 6756 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
6757 | { |
6758 | struct window *w = decode_window (window); | |
5500c422 | 6759 | |
6b61353c KH |
6760 | /* Translate negative or zero widths to nil. |
6761 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6762 | |
c10ce82e | 6763 | if (!NILP (left_width)) |
6b61353c | 6764 | { |
c10ce82e JB |
6765 | CHECK_NUMBER (left_width); |
6766 | if (XINT (left_width) <= 0) | |
6767 | left_width = Qnil; | |
6b61353c | 6768 | } |
5500c422 | 6769 | |
c10ce82e | 6770 | if (!NILP (right_width)) |
6b61353c | 6771 | { |
c10ce82e JB |
6772 | CHECK_NUMBER (right_width); |
6773 | if (XINT (right_width) <= 0) | |
6774 | right_width = Qnil; | |
6b61353c | 6775 | } |
5500c422 | 6776 | |
c10ce82e JB |
6777 | if (!EQ (w->left_margin_cols, left_width) |
6778 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6779 | { |
c10ce82e JB |
6780 | w->left_margin_cols = left_width; |
6781 | w->right_margin_cols = right_width; | |
949cf20f KS |
6782 | |
6783 | adjust_window_margins (w); | |
6784 | ||
6785 | ++windows_or_buffers_changed; | |
6786 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6787 | } | |
5500c422 | 6788 | |
5500c422 GM |
6789 | return Qnil; |
6790 | } | |
6791 | ||
6792 | ||
6793 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6794 | 0, 1, 0, | |
fdb82f93 PJ |
6795 | doc: /* Get width of marginal areas of window WINDOW. |
6796 | If WINDOW is omitted or nil, use the currently selected window. | |
6797 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6798 | If a marginal area does not exist, its width will be returned | |
6799 | as nil. */) | |
5842a27b | 6800 | (Lisp_Object window) |
5500c422 GM |
6801 | { |
6802 | struct window *w = decode_window (window); | |
949cf20f KS |
6803 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6804 | } | |
6805 | ||
6806 | ||
6807 | \f | |
6808 | /*********************************************************************** | |
6809 | Fringes | |
6810 | ***********************************************************************/ | |
6811 | ||
a7ca3326 | 6812 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6813 | 2, 4, 0, |
6b61353c KH |
6814 | doc: /* Set the fringe widths of window WINDOW. |
6815 | If WINDOW is nil, set the fringe widths of the currently selected | |
6816 | window. | |
6817 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6818 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6819 | fringe width. If a fringe width arg is nil, that means to use the | |
6820 | frame's default fringe width. Default fringe widths can be set with | |
6821 | the command `set-fringe-style'. | |
6822 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6823 | outside of the display margins. By default, fringes are drawn between | |
6824 | display marginal areas and the text area. */) | |
5842a27b | 6825 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6826 | { |
6827 | struct window *w = decode_window (window); | |
6828 | ||
c10ce82e JB |
6829 | if (!NILP (left_width)) |
6830 | CHECK_NATNUM (left_width); | |
6831 | if (!NILP (right_width)) | |
6832 | CHECK_NATNUM (right_width); | |
5a857365 | 6833 | |
017e297e | 6834 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6835 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6836 | && (!EQ (w->left_fringe_width, left_width) | |
6837 | || !EQ (w->right_fringe_width, right_width) | |
6838 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6839 | { |
c10ce82e JB |
6840 | w->left_fringe_width = left_width; |
6841 | w->right_fringe_width = right_width; | |
949cf20f KS |
6842 | w->fringes_outside_margins = outside_margins; |
6843 | ||
6844 | adjust_window_margins (w); | |
6845 | ||
6846 | clear_glyph_matrix (w->current_matrix); | |
6847 | w->window_end_valid = Qnil; | |
6848 | ||
6849 | ++windows_or_buffers_changed; | |
6850 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6851 | } | |
6852 | ||
6853 | return Qnil; | |
6854 | } | |
6855 | ||
6856 | ||
6857 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6858 | 0, 1, 0, | |
6859 | doc: /* Get width of fringes of window WINDOW. | |
6860 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6861 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6862 | (Lisp_Object window) |
949cf20f KS |
6863 | { |
6864 | struct window *w = decode_window (window); | |
d46c6df5 | 6865 | |
949cf20f KS |
6866 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6867 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6868 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6869 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6870 | } |
6871 | ||
6872 | ||
6873 | \f | |
6874 | /*********************************************************************** | |
6875 | Scroll bars | |
6876 | ***********************************************************************/ | |
6877 | ||
a7ca3326 | 6878 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6879 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f KS |
6880 | doc: /* Set width and type of scroll bars of window WINDOW. |
6881 | If window is nil, set scroll bars of the currently selected window. | |
6882 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6883 | this is automatically adjusted to a multiple of the frame column width. | |
6884 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6885 | bar: left, right, or nil. | |
6b61353c | 6886 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6887 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6888 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6889 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6890 | { |
6891 | struct window *w = decode_window (window); | |
6892 | ||
6893 | if (!NILP (width)) | |
0f8fe9a2 SM |
6894 | { |
6895 | CHECK_NATNUM (width); | |
949cf20f | 6896 | |
0f8fe9a2 SM |
6897 | if (XINT (width) == 0) |
6898 | vertical_type = Qnil; | |
6899 | } | |
949cf20f | 6900 | |
413a79ad | 6901 | if (!(NILP (vertical_type) |
0cc1039f | 6902 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6903 | || EQ (vertical_type, Qright) |
6904 | || EQ (vertical_type, Qt))) | |
6905 | error ("Invalid type of vertical scroll bar"); | |
6906 | ||
949cf20f KS |
6907 | if (!EQ (w->scroll_bar_width, width) |
6908 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6909 | { | |
6910 | w->scroll_bar_width = width; | |
6911 | w->vertical_scroll_bar_type = vertical_type; | |
6912 | ||
6913 | adjust_window_margins (w); | |
6914 | ||
6915 | clear_glyph_matrix (w->current_matrix); | |
6916 | w->window_end_valid = Qnil; | |
6917 | ||
6918 | ++windows_or_buffers_changed; | |
6919 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6920 | } | |
6921 | ||
6922 | return Qnil; | |
6923 | } | |
6924 | ||
6925 | ||
6926 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6927 | 0, 1, 0, | |
6928 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6929 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6930 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6931 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6932 | value. */) | |
5842a27b | 6933 | (Lisp_Object window) |
949cf20f KS |
6934 | { |
6935 | struct window *w = decode_window (window); | |
6936 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6937 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6938 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6939 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6940 | Fcons (w->vertical_scroll_bar_type, | |
6941 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6942 | } |
6943 | ||
6944 | ||
7ab12479 | 6945 | \f |
5500c422 GM |
6946 | /*********************************************************************** |
6947 | Smooth scrolling | |
6948 | ***********************************************************************/ | |
6949 | ||
0cc1039f | 6950 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6951 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6952 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6953 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6954 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6955 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6956 | { |
47004952 | 6957 | Lisp_Object result; |
5500c422 GM |
6958 | struct frame *f; |
6959 | struct window *w; | |
177c0ea7 | 6960 | |
5500c422 GM |
6961 | if (NILP (window)) |
6962 | window = selected_window; | |
47004952 | 6963 | else |
b7826503 | 6964 | CHECK_WINDOW (window); |
5500c422 GM |
6965 | w = XWINDOW (window); |
6966 | f = XFRAME (w->frame); | |
177c0ea7 | 6967 | |
5500c422 | 6968 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6969 | result = (NILP (pixels_p) |
6970 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6971 | : make_number (-w->vscroll)); | |
5500c422 | 6972 | else |
47004952 GM |
6973 | result = make_number (0); |
6974 | return result; | |
5500c422 GM |
6975 | } |
6976 | ||
6977 | ||
6978 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6979 | 2, 3, 0, |
fdb82f93 | 6980 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6981 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6982 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6983 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6984 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6985 | corresponds to an integral number of pixels. The return value is the | |
6986 | result of this rounding. | |
6987 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6988 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6989 | { |
6990 | struct window *w; | |
6991 | struct frame *f; | |
177c0ea7 | 6992 | |
5500c422 GM |
6993 | if (NILP (window)) |
6994 | window = selected_window; | |
47004952 | 6995 | else |
b7826503 PJ |
6996 | CHECK_WINDOW (window); |
6997 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6998 | |
5500c422 GM |
6999 | w = XWINDOW (window); |
7000 | f = XFRAME (w->frame); | |
7001 | ||
7002 | if (FRAME_WINDOW_P (f)) | |
7003 | { | |
7004 | int old_dy = w->vscroll; | |
177c0ea7 | 7005 | |
0cc1039f KS |
7006 | w->vscroll = - (NILP (pixels_p) |
7007 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
7008 | : XFLOATINT (vscroll)); | |
47004952 | 7009 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 7010 | |
e56263e5 KS |
7011 | if (w->vscroll != old_dy) |
7012 | { | |
7013 | /* Adjust glyph matrix of the frame if the virtual display | |
7014 | area becomes larger than before. */ | |
7015 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
7016 | adjust_glyphs (f); | |
177c0ea7 | 7017 | |
e56263e5 KS |
7018 | /* Prevent redisplay shortcuts. */ |
7019 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7020 | } | |
5500c422 | 7021 | } |
177c0ea7 | 7022 | |
0cc1039f | 7023 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7024 | } |
177c0ea7 | 7025 | |
7bbb5782 GM |
7026 | \f |
7027 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7028 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7029 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 7030 | |
2f7c71a1 AS |
7031 | static void |
7032 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
7033 | void *user_data) | |
7bbb5782 | 7034 | { |
56f2de10 | 7035 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
7036 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
7037 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7038 | } |
7039 | ||
7040 | ||
7041 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7042 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7043 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7044 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7045 | |
67492200 | 7046 | static int |
971de7fb | 7047 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 7048 | { |
67492200 | 7049 | int cont; |
177c0ea7 | 7050 | |
67492200 | 7051 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7052 | { |
7053 | if (!NILP (w->hchild)) | |
f95464e4 | 7054 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7055 | else if (!NILP (w->vchild)) |
f95464e4 | 7056 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7057 | else |
0f532a9a | 7058 | cont = fn (w, user_data); |
177c0ea7 | 7059 | |
7bbb5782 GM |
7060 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7061 | } | |
67492200 GM |
7062 | |
7063 | return cont; | |
7bbb5782 GM |
7064 | } |
7065 | ||
7066 | ||
6d194a45 | 7067 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7068 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7069 | the window start. */ |
7070 | ||
67492200 | 7071 | static int |
971de7fb | 7072 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 7073 | { |
08c1d235 SM |
7074 | if (MINI_WINDOW_P (w) |
7075 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
7076 | && (w == XWINDOW (selected_window) | |
7077 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
7078 | && ! NILP (Vminibuf_scroll_window) | |
7079 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 7080 | freeze_p = NULL; |
177c0ea7 | 7081 | |
f95464e4 | 7082 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7083 | return 1; |
7bbb5782 GM |
7084 | } |
7085 | ||
7086 | ||
7087 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7088 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7089 | means freeze the window start. */ | |
7090 | ||
7091 | void | |
971de7fb | 7092 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 7093 | { |
cbccabec | 7094 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7095 | } |
5500c422 GM |
7096 | |
7097 | \f | |
7098 | /*********************************************************************** | |
7099 | Initialization | |
7100 | ***********************************************************************/ | |
7101 | ||
cbff28e8 | 7102 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 7103 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
7104 | |
7105 | int | |
971de7fb | 7106 | compare_window_configurations (Lisp_Object c1, Lisp_Object c2, int ignore_positions) |
cbff28e8 RS |
7107 | { |
7108 | register struct save_window_data *d1, *d2; | |
7109 | struct Lisp_Vector *sw1, *sw2; | |
7110 | int i; | |
7111 | ||
663fbbba KS |
7112 | CHECK_WINDOW_CONFIGURATION (c1); |
7113 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7114 | |
cbff28e8 RS |
7115 | d1 = (struct save_window_data *) XVECTOR (c1); |
7116 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7117 | sw1 = XVECTOR (d1->saved_windows); | |
7118 | sw2 = XVECTOR (d2->saved_windows); | |
7119 | ||
b05b4e27 | 7120 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 7121 | return 0; |
b05b4e27 | 7122 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 7123 | return 0; |
b05b4e27 | 7124 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
7125 | return 0; |
7126 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7127 | return 0; | |
7128 | /* Don't compare the current_window field directly. | |
7129 | Instead see w1_is_current and w2_is_current, below. */ | |
7130 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7131 | return 0; | |
2f8274be | 7132 | if (! ignore_positions) |
3f49fddc KS |
7133 | { |
7134 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7135 | return 0; | |
7136 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7137 | return 0; | |
7138 | } | |
cbff28e8 RS |
7139 | /* Don't compare the root_window field. |
7140 | We don't require the two configurations | |
7141 | to use the same window object, | |
7142 | and the two root windows must be equivalent | |
7143 | if everything else compares equal. */ | |
7144 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7145 | return 0; | |
cbff28e8 RS |
7146 | |
7147 | /* Verify that the two confis have the same number of windows. */ | |
eab3844f | 7148 | if (sw1->header.size != sw2->header.size) |
cbff28e8 RS |
7149 | return 0; |
7150 | ||
eab3844f | 7151 | for (i = 0; i < sw1->header.size; i++) |
cbff28e8 RS |
7152 | { |
7153 | struct saved_window *p1, *p2; | |
7154 | int w1_is_current, w2_is_current; | |
7155 | ||
7156 | p1 = SAVED_WINDOW_N (sw1, i); | |
7157 | p2 = SAVED_WINDOW_N (sw2, i); | |
7158 | ||
7159 | /* Verify that the current windows in the two | |
7160 | configurations correspond to each other. */ | |
7161 | w1_is_current = EQ (d1->current_window, p1->window); | |
7162 | w2_is_current = EQ (d2->current_window, p2->window); | |
7163 | ||
7164 | if (w1_is_current != w2_is_current) | |
7165 | return 0; | |
7166 | ||
7167 | /* Verify that the corresponding windows do match. */ | |
7168 | if (! EQ (p1->buffer, p2->buffer)) | |
7169 | return 0; | |
949cf20f | 7170 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7171 | return 0; |
949cf20f | 7172 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7173 | return 0; |
949cf20f | 7174 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7175 | return 0; |
949cf20f | 7176 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7177 | return 0; |
cbff28e8 RS |
7178 | if (! EQ (p1->display_table, p2->display_table)) |
7179 | return 0; | |
7180 | if (! EQ (p1->parent, p2->parent)) | |
7181 | return 0; | |
7182 | if (! EQ (p1->prev, p2->prev)) | |
7183 | return 0; | |
2f8274be RS |
7184 | if (! ignore_positions) |
7185 | { | |
7186 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7187 | return 0; | |
ea68264b GM |
7188 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7189 | return 0; | |
2f8274be RS |
7190 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7191 | return 0; | |
7192 | if (NILP (Fequal (p1->start, p2->start))) | |
7193 | return 0; | |
7194 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7195 | return 0; | |
7196 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7197 | return 0; | |
7198 | } | |
949cf20f KS |
7199 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7200 | return 0; | |
7201 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7202 | return 0; | |
7203 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7204 | return 0; | |
7205 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7206 | return 0; | |
7207 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7208 | return 0; | |
7209 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7210 | return 0; | |
7211 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7212 | return 0; | |
cbff28e8 RS |
7213 | } |
7214 | ||
7215 | return 1; | |
7216 | } | |
2f8274be RS |
7217 | |
7218 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7219 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7220 | doc: /* Compare two window configurations as regards the structure of windows. |
7221 | This function ignores details such as the values of point and mark | |
7222 | and scrolling positions. */) | |
5842a27b | 7223 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
7224 | { |
7225 | if (compare_window_configurations (x, y, 1)) | |
7226 | return Qt; | |
7227 | return Qnil; | |
7228 | } | |
cbff28e8 | 7229 | \f |
dfcf069d | 7230 | void |
971de7fb | 7231 | init_window_once (void) |
7ab12479 | 7232 | { |
3224dac1 | 7233 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7234 | XSETFRAME (selected_frame, f); |
7235 | Vterminal_frame = selected_frame; | |
7236 | minibuf_window = f->minibuffer_window; | |
7237 | selected_window = f->selected_window; | |
7238 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7239 | |
7240 | window_initialized = 1; | |
7ab12479 JB |
7241 | } |
7242 | ||
67492200 | 7243 | void |
971de7fb | 7244 | init_window (void) |
67492200 GM |
7245 | { |
7246 | Vwindow_list = Qnil; | |
7247 | } | |
7248 | ||
dfcf069d | 7249 | void |
971de7fb | 7250 | syms_of_window (void) |
7ab12479 | 7251 | { |
d67b4f80 | 7252 | Qscroll_up = intern_c_string ("scroll-up"); |
c525d842 CY |
7253 | staticpro (&Qscroll_up); |
7254 | ||
d67b4f80 | 7255 | Qscroll_down = intern_c_string ("scroll-down"); |
c525d842 CY |
7256 | staticpro (&Qscroll_down); |
7257 | ||
a4b000fb JL |
7258 | Qscroll_command = intern_c_string ("scroll-command"); |
7259 | staticpro (&Qscroll_command); | |
7260 | ||
7261 | Fput (Qscroll_up, Qscroll_command, Qt); | |
7262 | Fput (Qscroll_down, Qscroll_command, Qt); | |
7263 | ||
d67b4f80 | 7264 | Qwindow_size_fixed = intern_c_string ("window-size-fixed"); |
8a37516b | 7265 | staticpro (&Qwindow_size_fixed); |
c0e7ccd3 | 7266 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7267 | |
543f5fb1 RS |
7268 | staticpro (&Qwindow_configuration_change_hook); |
7269 | Qwindow_configuration_change_hook | |
d67b4f80 | 7270 | = intern_c_string ("window-configuration-change-hook"); |
543f5fb1 | 7271 | |
d67b4f80 | 7272 | Qwindowp = intern_c_string ("windowp"); |
7ab12479 JB |
7273 | staticpro (&Qwindowp); |
7274 | ||
d67b4f80 | 7275 | Qwindow_configuration_p = intern_c_string ("window-configuration-p"); |
3f8ab7bd RS |
7276 | staticpro (&Qwindow_configuration_p); |
7277 | ||
d67b4f80 | 7278 | Qwindow_live_p = intern_c_string ("window-live-p"); |
806b4d9b | 7279 | staticpro (&Qwindow_live_p); |
605be8af | 7280 | |
d67b4f80 | 7281 | Qdisplay_buffer = intern_c_string ("display-buffer"); |
87478b52 SM |
7282 | staticpro (&Qdisplay_buffer); |
7283 | ||
d67b4f80 | 7284 | Qtemp_buffer_show_hook = intern_c_string ("temp-buffer-show-hook"); |
a58ec57d RS |
7285 | staticpro (&Qtemp_buffer_show_hook); |
7286 | ||
67492200 | 7287 | staticpro (&Vwindow_list); |
8bfb170b KS |
7288 | |
7289 | minibuf_selected_window = Qnil; | |
3dbab091 | 7290 | staticpro (&minibuf_selected_window); |
67492200 | 7291 | |
c876b227 | 7292 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7293 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7294 | window_scroll_preserve_hpos = -1; |
7295 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7296 | |
29208e82 | 7297 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
7298 | doc: /* Non-nil means call as function to display a help buffer. |
7299 | The function is called with one argument, the buffer to be displayed. | |
7300 | Used by `with-output-to-temp-buffer'. | |
7301 | If this function is used, then it must do the entire job of showing | |
7302 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7303 | Vtemp_buffer_show_function = Qnil; |
7304 | ||
29208e82 | 7305 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 7306 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7307 | Vminibuf_scroll_window = Qnil; |
7308 | ||
29208e82 | 7309 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 7310 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7311 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7312 | is displayed in the `mode-line' face. */); | |
7313 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7314 | |
29208e82 | 7315 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 7316 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7317 | Vother_window_scroll_buffer = Qnil; |
7318 | ||
29208e82 | 7319 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e56263e5 KS |
7320 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
7321 | auto_window_vscroll_p = 1; | |
7322 | ||
29208e82 | 7323 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
fdb82f93 | 7324 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7325 | next_screen_context_lines = 2; |
7326 | ||
29208e82 | 7327 | DEFVAR_INT ("window-min-height", window_min_height, |
047aaeb9 MR |
7328 | doc: /* Allow deleting windows less than this tall. |
7329 | The value is measured in line units. If a window wants a modeline it | |
7330 | is counted as one line. | |
7331 | ||
7332 | Emacs honors settings of this variable when enlarging or shrinking | |
7333 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7334 | window_min_height = 4; |
7335 | ||
29208e82 | 7336 | DEFVAR_INT ("window-min-width", window_min_width, |
047aaeb9 MR |
7337 | doc: /* Allow deleting windows less than this wide. |
7338 | The value is measured in characters and includes any fringes or | |
7339 | the scrollbar. | |
7340 | ||
7341 | Emacs honors settings of this variable when enlarging or shrinking | |
7342 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7343 | window_min_width = 10; |
7344 | ||
5500c422 | 7345 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 7346 | Vscroll_preserve_screen_position, |
c876b227 | 7347 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7348 | A value of nil means point does not keep its screen position except |
7349 | at the scroll margin or window boundary respectively. | |
7350 | A value of t means point keeps its screen position if the scroll | |
7351 | command moved it vertically out of the window, e.g. when scrolling | |
7352 | by full screens. | |
9013a7f8 | 7353 | Any other value means point always keeps its screen position. |
a4b000fb JL |
7354 | Scroll commands should have the `scroll-command' property |
7355 | on their symbols to be controlled by this variable. */); | |
5500c422 | 7356 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7357 | |
29208e82 | 7358 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
7359 | doc: /* Type of marker to use for `window-point'. */); |
7360 | Vwindow_point_insertion_type = Qnil; | |
7361 | ||
543f5fb1 | 7362 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 7363 | Vwindow_configuration_change_hook, |
fdb82f93 | 7364 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7365 | The buffer-local part is run once per window, with the relevant window |
7366 | selected; while the global part is run only once for the modified frame, | |
7367 | with the relevant frame selected. */); | |
543f5fb1 RS |
7368 | Vwindow_configuration_change_hook = Qnil; |
7369 | ||
29208e82 | 7370 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
666e158e | 7371 | doc: /* If non-nil, then the `recenter' command with a nil argument |
6e6e5760 | 7372 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
7373 | frame to be redrawn only if it is a tty frame. */); |
7374 | Vrecenter_redisplay = Qtty; | |
7375 | ||
7376 | ||
7ab12479 JB |
7377 | defsubr (&Sselected_window); |
7378 | defsubr (&Sminibuffer_window); | |
7379 | defsubr (&Swindow_minibuffer_p); | |
7380 | defsubr (&Swindowp); | |
806b4d9b | 7381 | defsubr (&Swindow_live_p); |
727e958e MR |
7382 | defsubr (&Swindow_frame); |
7383 | defsubr (&Sframe_root_window); | |
7384 | defsubr (&Sframe_first_window); | |
7385 | defsubr (&Sframe_selected_window); | |
7386 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 7387 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7388 | defsubr (&Swindow_line_height); |
7ab12479 | 7389 | defsubr (&Swindow_buffer); |
bf60a96b MR |
7390 | defsubr (&Swindow_parent); |
7391 | defsubr (&Swindow_vchild); | |
7392 | defsubr (&Swindow_hchild); | |
7393 | defsubr (&Swindow_next); | |
7394 | defsubr (&Swindow_prev); | |
abde8f8c MR |
7395 | defsubr (&Swindow_use_time); |
7396 | defsubr (&Swindow_top_line); | |
7397 | defsubr (&Swindow_left_column); | |
7398 | defsubr (&Swindow_total_size); | |
7399 | defsubr (&Swindow_body_size); | |
7ab12479 JB |
7400 | defsubr (&Swindow_height); |
7401 | defsubr (&Swindow_width); | |
35ea56c9 | 7402 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7403 | defsubr (&Swindow_hscroll); |
7404 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7405 | defsubr (&Swindow_redisplay_end_trigger); |
7406 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7407 | defsubr (&Swindow_edges); |
c99a9eb3 | 7408 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 7409 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
7410 | defsubr (&Swindow_inside_edges); |
7411 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 7412 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
7413 | defsubr (&Scoordinates_in_window_p); |
7414 | defsubr (&Swindow_at); | |
7ab12479 JB |
7415 | defsubr (&Swindow_point); |
7416 | defsubr (&Swindow_start); | |
7417 | defsubr (&Swindow_end); | |
7418 | defsubr (&Sset_window_point); | |
7419 | defsubr (&Sset_window_start); | |
7420 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7421 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7422 | defsubr (&Swindow_display_table); |
7423 | defsubr (&Sset_window_display_table); | |
7424 | defsubr (&Snext_window); | |
7425 | defsubr (&Sprevious_window); | |
7426 | defsubr (&Sother_window); | |
7427 | defsubr (&Sget_lru_window); | |
7428 | defsubr (&Sget_largest_window); | |
7429 | defsubr (&Sget_buffer_window); | |
7430 | defsubr (&Sdelete_other_windows); | |
7431 | defsubr (&Sdelete_windows_on); | |
7432 | defsubr (&Sreplace_buffer_in_windows); | |
7433 | defsubr (&Sdelete_window); | |
7434 | defsubr (&Sset_window_buffer); | |
7435 | defsubr (&Sselect_window); | |
6b61353c | 7436 | defsubr (&Sforce_window_update); |
3e21b6a7 | 7437 | defsubr (&Stemp_output_buffer_show); |
7ab12479 JB |
7438 | defsubr (&Ssplit_window); |
7439 | defsubr (&Senlarge_window); | |
7440 | defsubr (&Sshrink_window); | |
0d384044 | 7441 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7442 | defsubr (&Sscroll_up); |
7443 | defsubr (&Sscroll_down); | |
7444 | defsubr (&Sscroll_left); | |
7445 | defsubr (&Sscroll_right); | |
ccd0664b | 7446 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7447 | defsubr (&Sscroll_other_window); |
fa832261 | 7448 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7449 | defsubr (&Srecenter); |
81fe0836 | 7450 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7451 | defsubr (&Smove_to_window_line); |
7452 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7453 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7454 | defsubr (&Sset_window_configuration); |
7455 | defsubr (&Scurrent_window_configuration); | |
c16e1cc3 | 7456 | defsubr (&Swindow_tree); |
5500c422 GM |
7457 | defsubr (&Sset_window_margins); |
7458 | defsubr (&Swindow_margins); | |
949cf20f KS |
7459 | defsubr (&Sset_window_fringes); |
7460 | defsubr (&Swindow_fringes); | |
7461 | defsubr (&Sset_window_scroll_bars); | |
7462 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7463 | defsubr (&Swindow_vscroll); |
7464 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7465 | defsubr (&Scompare_window_configurations); |
67492200 | 7466 | defsubr (&Swindow_list); |
abde8f8c | 7467 | defsubr (&Swindow_list_1); |
cfbb2395 JB |
7468 | defsubr (&Swindow_parameters); |
7469 | defsubr (&Swindow_parameter); | |
7470 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
7471 | } |
7472 | ||
dfcf069d | 7473 | void |
971de7fb | 7474 | keys_of_window (void) |
7ab12479 JB |
7475 | { |
7476 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7477 | initial_define_key (control_x_map, '2', "split-window"); | |
7478 | initial_define_key (control_x_map, '0', "delete-window"); | |
7479 | initial_define_key (control_x_map, 'o', "other-window"); | |
7480 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7481 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7482 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7483 | ||
32129746 | 7484 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 7485 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 7486 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 7487 | } |