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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
73b0cd50 | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2011 |
8cabe764 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
4d553a13 | 22 | #include <stdio.h> |
d7306fe6 | 23 | #include <setjmp.h> |
4d553a13 | 24 | |
7ab12479 JB |
25 | #include "lisp.h" |
26 | #include "buffer.h" | |
3e4731a3 | 27 | #include "keyboard.h" |
e35f6ff7 | 28 | #include "keymap.h" |
44fa5b1e | 29 | #include "frame.h" |
7ab12479 JB |
30 | #include "window.h" |
31 | #include "commands.h" | |
32 | #include "indent.h" | |
33 | #include "termchar.h" | |
34 | #include "disptab.h" | |
dfcf069d | 35 | #include "dispextern.h" |
5500c422 GM |
36 | #include "blockinput.h" |
37 | #include "intervals.h" | |
de509a60 | 38 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 39 | |
6d55d620 | 40 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 41 | #include "xterm.h" |
5500c422 | 42 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
43 | #ifdef WINDOWSNT |
44 | #include "w32term.h" | |
45 | #endif | |
1e3c8885 EZ |
46 | #ifdef MSDOS |
47 | #include "msdos.h" | |
48 | #endif | |
edfda783 AR |
49 | #ifdef HAVE_NS |
50 | #include "nsterm.h" | |
51 | #endif | |
5500c422 | 52 | |
9397e56f | 53 | Lisp_Object Qwindowp, Qwindow_live_p; |
b9e809c2 | 54 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 55 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 56 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 57 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 58 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
b9e809c2 MR |
59 | static Lisp_Object Qsafe, Qabove, Qbelow; |
60 | static Lisp_Object Qauto_buffer_name; | |
61 | ||
f57e2426 J |
62 | static int displayed_window_lines (struct window *); |
63 | static struct window *decode_window (Lisp_Object); | |
64 | static int count_windows (struct window *); | |
65 | static int get_leaf_windows (struct window *, struct window **, int); | |
66 | static void window_scroll (Lisp_Object, int, int, int); | |
67 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); | |
68 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 69 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
70 | static Lisp_Object window_list (void); |
71 | static int add_window_to_list (struct window *, void *); | |
72 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
73 | Lisp_Object); | |
74 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
75 | Lisp_Object, int); | |
76 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
77 | Lisp_Object *); | |
2f7c71a1 | 78 | static void foreach_window (struct frame *, |
f95464e4 | 79 | int (* fn) (struct window *, void *), |
2f7c71a1 | 80 | void *); |
f57e2426 J |
81 | static int foreach_window_1 (struct window *, |
82 | int (* fn) (struct window *, void *), | |
83 | void *); | |
84 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
d615d6d2 MR |
85 | static int window_resize_check (struct window *, int); |
86 | static void window_resize_apply (struct window *, int); | |
7c82f3e2 | 87 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 88 | |
7ab12479 JB |
89 | /* This is the window in which the terminal's cursor should |
90 | be left when nothing is being done with it. This must | |
91 | always be a leaf window, and its buffer is selected by | |
92 | the top level editing loop at the end of each command. | |
93 | ||
94 | This value is always the same as | |
44fa5b1e | 95 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
96 | Lisp_Object selected_window; |
97 | ||
67492200 GM |
98 | /* A list of all windows for use by next_window and Fwindow_list. |
99 | Functions creating or deleting windows should invalidate this cache | |
100 | by setting it to nil. */ | |
67492200 GM |
101 | Lisp_Object Vwindow_list; |
102 | ||
5500c422 GM |
103 | /* The mini-buffer window of the selected frame. |
104 | Note that you cannot test for mini-bufferness of an arbitrary window | |
105 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
106 | the selected window. */ |
107 | Lisp_Object minibuf_window; | |
108 | ||
3f49fddc KS |
109 | /* Non-nil means it is the window whose mode line should be |
110 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 111 | Lisp_Object minibuf_selected_window; |
3f49fddc | 112 | |
a58ec57d | 113 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 114 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 115 | |
7ab12479 JB |
116 | /* Incremented for each window created. */ |
117 | static int sequence_number; | |
118 | ||
5b03d3c0 RS |
119 | /* Nonzero after init_window_once has finished. */ |
120 | static int window_initialized; | |
121 | ||
543f5fb1 | 122 | /* Hook to run when window config changes. */ |
eeca6f6f | 123 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 124 | |
66d43aea | 125 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 126 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 127 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 128 | |
c876b227 | 129 | /* Same for window_scroll_line_based. */ |
c876b227 SM |
130 | static int window_scroll_preserve_hpos; |
131 | static int window_scroll_preserve_vpos; | |
f230ecc9 MR |
132 | \f |
133 | static struct window * | |
134 | decode_window (register Lisp_Object window) | |
135 | { | |
136 | if (NILP (window)) | |
137 | return XWINDOW (selected_window); | |
c876b227 | 138 | |
f230ecc9 MR |
139 | CHECK_LIVE_WINDOW (window); |
140 | return XWINDOW (window); | |
141 | } | |
142 | ||
143 | static struct window * | |
144 | decode_any_window (register Lisp_Object window) | |
145 | { | |
146 | if (NILP (window)) | |
147 | return XWINDOW (selected_window); | |
148 | ||
149 | CHECK_WINDOW (window); | |
150 | return XWINDOW (window); | |
151 | } | |
666e158e | 152 | |
7ab12479 | 153 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 154 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 155 | (Lisp_Object object) |
7ab12479 | 156 | { |
413430c5 | 157 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
158 | } |
159 | ||
806b4d9b | 160 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 MR |
161 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
162 | A live window is a window that displays a buffer. */) | |
5842a27b | 163 | (Lisp_Object object) |
605be8af | 164 | { |
9e571f49 | 165 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 166 | } |
727e958e MR |
167 | \f |
168 | /* Frames and windows. */ | |
169 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
170 | doc: /* Return the frame that window WINDOW is on. | |
171 | WINDOW can be any window and defaults to the selected one. */) | |
172 | (Lisp_Object window) | |
173 | { | |
174 | return decode_any_window (window)->frame; | |
175 | } | |
176 | ||
177 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
178 | doc: /* Return the root window of FRAME_OR_WINDOW. | |
179 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
180 | Else if FRAME_OR_WINDOW denotes any window, return the root window of | |
181 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
182 | the root window of that frame. */) | |
183 | (Lisp_Object frame_or_window) | |
184 | { | |
185 | Lisp_Object window; | |
186 | ||
187 | if (NILP (frame_or_window)) | |
188 | window = SELECTED_FRAME ()->root_window; | |
189 | else if (WINDOWP (frame_or_window)) | |
190 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
191 | else | |
192 | { | |
193 | CHECK_LIVE_FRAME (frame_or_window); | |
194 | window = XFRAME (frame_or_window)->root_window; | |
195 | } | |
196 | ||
197 | return window; | |
198 | } | |
199 | ||
200 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
201 | doc: /* Return the window used now for minibuffers. | |
202 | If the optional argument FRAME is specified, return the minibuffer window | |
203 | used by that frame. */) | |
204 | (Lisp_Object frame) | |
205 | { | |
206 | if (NILP (frame)) | |
207 | frame = selected_frame; | |
208 | CHECK_LIVE_FRAME (frame); | |
209 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
210 | } | |
211 | ||
212 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
213 | Swindow_minibuffer_p, 0, 1, 0, | |
214 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
215 | WINDOW can be any window and defaults to the selected one. */) | |
216 | (Lisp_Object window) | |
217 | { | |
218 | return MINI_WINDOW_P (decode_any_window (window)) ? Qt : Qnil; | |
219 | } | |
220 | ||
221 | /* Don't move this to window.el - this must be a safe routine. */ | |
222 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
223 | doc: /* Return the topmost, leftmost live window on FRAME_OR_WINDOW. | |
224 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
225 | Else if FRAME_OR_WINDOW denotes any window, return the first window of | |
226 | that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
227 | the first window of that frame. */) | |
228 | (Lisp_Object frame_or_window) | |
229 | { | |
230 | Lisp_Object window; | |
231 | ||
232 | if (NILP (frame_or_window)) | |
233 | window = SELECTED_FRAME ()->root_window; | |
234 | else if (WINDOWP (frame_or_window)) | |
235 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
236 | else | |
237 | { | |
238 | CHECK_LIVE_FRAME (frame_or_window); | |
239 | window = XFRAME (frame_or_window)->root_window; | |
240 | } | |
241 | ||
242 | while (NILP (XWINDOW (window)->buffer)) | |
243 | { | |
244 | if (! NILP (XWINDOW (window)->hchild)) | |
245 | window = XWINDOW (window)->hchild; | |
246 | else if (! NILP (XWINDOW (window)->vchild)) | |
247 | window = XWINDOW (window)->vchild; | |
248 | else | |
249 | abort (); | |
250 | } | |
251 | ||
252 | return window; | |
253 | } | |
254 | ||
255 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
256 | Sframe_selected_window, 0, 1, 0, | |
257 | doc: /* Return the selected window of FRAME_OR_WINDOW. | |
258 | If omitted, FRAME_OR_WINDOW defaults to the currently selected frame. | |
259 | Else if FRAME_OR_WINDOW denotes any window, return the selected window | |
260 | of that window's frame. If FRAME_OR_WINDOW denotes a live frame, return | |
261 | the selected window of that frame. */) | |
262 | (Lisp_Object frame_or_window) | |
263 | { | |
264 | Lisp_Object window; | |
265 | ||
266 | if (NILP (frame_or_window)) | |
267 | window = SELECTED_FRAME ()->selected_window; | |
268 | else if (WINDOWP (frame_or_window)) | |
269 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; | |
270 | else | |
271 | { | |
272 | CHECK_LIVE_FRAME (frame_or_window); | |
273 | window = XFRAME (frame_or_window)->selected_window; | |
274 | } | |
275 | ||
276 | return window; | |
277 | } | |
278 | ||
279 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
280 | Sset_frame_selected_window, 2, 3, 0, | |
281 | doc: /* Set selected window of FRAME to WINDOW. | |
282 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
283 | is the selected frame, this makes WINDOW the selected window. Optional | |
284 | argument NORECORD non-nil means to neither change the order of recently | |
285 | selected windows nor the buffer list. WINDOW must denote a live window. | |
286 | Return WINDOW. */) | |
287 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
288 | { | |
289 | if (NILP (frame)) | |
290 | frame = selected_frame; | |
291 | ||
292 | CHECK_LIVE_FRAME (frame); | |
293 | CHECK_LIVE_WINDOW (window); | |
294 | ||
295 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
296 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
297 | ||
298 | if (EQ (frame, selected_frame)) | |
299 | return Fselect_window (window, norecord); | |
300 | else | |
301 | return XFRAME (frame)->selected_window = window; | |
302 | } | |
303 | ||
304 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
305 | doc: /* Return the selected window. | |
306 | The selected window is the window in which the standard cursor for | |
307 | selected windows appears and to which many commands apply. */) | |
308 | (void) | |
309 | { | |
310 | return selected_window; | |
311 | } | |
312 | ||
9397e56f MR |
313 | int window_select_count; |
314 | ||
727e958e MR |
315 | /* If select_window is called with inhibit_point_swap non-zero it will |
316 | not store point of the old selected window's buffer back into that | |
317 | window's pointm slot. This is needed by Fset_window_configuration to | |
318 | avoid that the display routine is called with selected_window set to | |
319 | Qnil causing a subsequent crash. */ | |
320 | static Lisp_Object | |
321 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
322 | { | |
323 | register struct window *w; | |
324 | register struct window *ow; | |
325 | struct frame *sf; | |
326 | ||
327 | CHECK_LIVE_WINDOW (window); | |
328 | ||
329 | w = XWINDOW (window); | |
330 | w->frozen_window_start_p = 0; | |
331 | ||
332 | if (NILP (norecord)) | |
333 | { | |
334 | ++window_select_count; | |
335 | XSETFASTINT (w->use_time, window_select_count); | |
336 | record_buffer (w->buffer); | |
337 | } | |
338 | ||
339 | if (EQ (window, selected_window) && !inhibit_point_swap) | |
340 | return window; | |
341 | ||
342 | sf = SELECTED_FRAME (); | |
343 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
344 | { | |
345 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
346 | /* Use this rather than Fhandle_switch_frame | |
347 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
348 | move around in the state where a minibuffer in a separate | |
349 | frame is active. */ | |
350 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
351 | /* Fselect_frame called us back so we've done all the work already. */ | |
352 | eassert (EQ (window, selected_window)); | |
353 | return window; | |
354 | } | |
355 | else | |
356 | sf->selected_window = window; | |
357 | ||
358 | /* Store the current buffer's actual point into the | |
359 | old selected window. It belongs to that window, | |
360 | and when the window is not selected, must be in the window. */ | |
361 | if (!inhibit_point_swap) | |
362 | { | |
363 | ow = XWINDOW (selected_window); | |
364 | if (! NILP (ow->buffer)) | |
365 | set_marker_both (ow->pointm, ow->buffer, | |
366 | BUF_PT (XBUFFER (ow->buffer)), | |
367 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
368 | } | |
369 | ||
370 | selected_window = window; | |
371 | ||
372 | Fset_buffer (w->buffer); | |
373 | ||
374 | BVAR (XBUFFER (w->buffer), last_selected_window) = window; | |
375 | ||
376 | /* Go to the point recorded in the window. | |
377 | This is important when the buffer is in more | |
378 | than one window. It also matters when | |
379 | redisplay_window has altered point after scrolling, | |
380 | because it makes the change only in the window. */ | |
381 | { | |
382 | register EMACS_INT new_point = marker_position (w->pointm); | |
383 | if (new_point < BEGV) | |
384 | SET_PT (BEGV); | |
385 | else if (new_point > ZV) | |
386 | SET_PT (ZV); | |
387 | else | |
388 | SET_PT (new_point); | |
389 | } | |
390 | ||
391 | windows_or_buffers_changed++; | |
392 | return window; | |
393 | } | |
394 | ||
395 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
396 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
397 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
398 | window. Return WINDOW. | |
399 | ||
400 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
401 | front of the buffer list and do not make this window the most recently | |
402 | selected one. | |
605be8af | 403 | |
727e958e MR |
404 | Note that the main editor command loop sets the current buffer to the |
405 | buffer of the selected window before each command. */) | |
406 | (register Lisp_Object window, Lisp_Object norecord) | |
407 | { | |
408 | return select_window (window, norecord, 0); | |
409 | } | |
410 | \f | |
bf60a96b MR |
411 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
412 | doc: /* Return the buffer that WINDOW is displaying. | |
413 | WINDOW can be any window and defaults to the selected one. | |
414 | If WINDOW is an internal window return nil. */) | |
415 | (Lisp_Object window) | |
416 | { | |
417 | return decode_any_window (window)->buffer; | |
418 | } | |
419 | ||
420 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
421 | doc: /* Return WINDOW's parent window. | |
422 | WINDOW can be any window and defaults to the selected one. | |
423 | Return nil if WINDOW has no parent. */) | |
424 | (Lisp_Object window) | |
425 | { | |
426 | return decode_any_window (window)->parent; | |
427 | } | |
428 | ||
d68443dc MR |
429 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
430 | doc: /* Return WINDOW's topmost child window. | |
bf60a96b | 431 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 432 | Return nil if WINDOW is not a vertical combination. */) |
bf60a96b MR |
433 | (Lisp_Object window) |
434 | { | |
435 | return decode_any_window (window)->vchild; | |
436 | } | |
437 | ||
d68443dc MR |
438 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
439 | doc: /* Return WINDOW's leftmost child window. | |
bf60a96b | 440 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 441 | Return nil if WINDOW is not a horizontal combination. */) |
bf60a96b MR |
442 | (Lisp_Object window) |
443 | { | |
444 | return decode_any_window (window)->hchild; | |
445 | } | |
446 | ||
d68443dc MR |
447 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
448 | doc: /* Return WINDOW's next sibling window. | |
bf60a96b | 449 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 450 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
451 | (Lisp_Object window) |
452 | { | |
453 | return decode_any_window (window)->next; | |
454 | } | |
455 | ||
d68443dc MR |
456 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
457 | doc: /* Return WINDOW's previous sibling window. | |
bf60a96b | 458 | WINDOW can be any window and defaults to the selected one. |
d68443dc | 459 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
460 | (Lisp_Object window) |
461 | { | |
462 | return decode_any_window (window)->prev; | |
463 | } | |
67492200 | 464 | |
496e208e MR |
465 | DEFUN ("window-splits", Fwindow_splits, Swindow_splits, 0, 1, 0, |
466 | doc: /* Return splits status for WINDOW. | |
467 | WINDOW can be any window and defaults to the selected one. | |
7ab12479 | 468 | |
496e208e MR |
469 | If the value returned by this function is nil and WINDOW is resized, the |
470 | corresponding space is preferably taken from (or given to) WINDOW's | |
471 | right sibling. When WINDOW is deleted, its space is given to its left | |
472 | sibling. | |
0cc1039f | 473 | |
496e208e MR |
474 | If the value returned by this function is non-nil, resizing and deleting |
475 | WINDOW may resize all windows in the same combination. */) | |
476 | (Lisp_Object window) | |
7ab12479 | 477 | { |
496e208e | 478 | return decode_any_window (window)->splits; |
7ab12479 | 479 | } |
53bb6b99 | 480 | |
496e208e MR |
481 | DEFUN ("set-window-splits", Fset_window_splits, Sset_window_splits, 2, 2, 0, |
482 | doc: /* Set splits status of WINDOW to STATUS. | |
483 | WINDOW can be any window and defaults to the selected one. Return | |
484 | STATUS. | |
536833ab | 485 | |
496e208e MR |
486 | If STATUS is nil and WINDOW is later resized, the corresponding space is |
487 | preferably taken from (or given to) WINDOW's right sibling. When WINDOW | |
488 | is deleted, its space is given to its left sibling. | |
536833ab | 489 | |
496e208e MR |
490 | If STATUS is non-nil, resizing and deleting WINDOW may resize all |
491 | windows in the same combination. */) | |
492 | (Lisp_Object window, Lisp_Object status) | |
b3a10345 | 493 | { |
496e208e | 494 | register struct window *w = decode_any_window (window); |
b3a10345 | 495 | |
496e208e | 496 | w->splits = status; |
b3a10345 | 497 | |
496e208e MR |
498 | return w->splits; |
499 | } | |
7bbc67d2 | 500 | |
496e208e MR |
501 | DEFUN ("window-nest", Fwindow_nest, Swindow_nest, 0, 1, 0, |
502 | doc: /* Return nest status of WINDOW. | |
503 | WINDOW can be any window and defaults to the selected one. | |
536833ab | 504 | |
496e208e MR |
505 | If the return value is nil, subwindows of WINDOW can be recombined with |
506 | WINDOW's siblings. A return value of non-nil means that subwindows of | |
507 | WINDOW are never \(re-)combined with WINDOW's siblings. */) | |
508 | (Lisp_Object window) | |
509 | { | |
510 | return decode_any_window (window)->nest; | |
511 | } | |
b3a10345 | 512 | |
496e208e MR |
513 | DEFUN ("set-window-nest", Fset_window_nest, Sset_window_nest, 2, 2, 0, |
514 | doc: /* Set nest status of WINDOW to STATUS. | |
515 | WINDOW can be any window and defaults to the selected one. Return | |
516 | STATUS. | |
536833ab | 517 | |
496e208e MR |
518 | If STATUS is nil, subwindows of WINDOW can be recombined with WINDOW's |
519 | siblings. STATUS non-nil means that subwindows of WINDOW are never | |
520 | \(re-)combined with WINDOW's siblings. */) | |
521 | (Lisp_Object window, Lisp_Object status) | |
522 | { | |
523 | register struct window *w = decode_any_window (window); | |
536833ab | 524 | |
496e208e | 525 | w->nest = status; |
b3a10345 | 526 | |
496e208e MR |
527 | return w->nest; |
528 | } | |
b3a10345 | 529 | |
496e208e MR |
530 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
531 | doc: /* Return WINDOW's use time. | |
532 | WINDOW defaults to the selected window. The window with the highest use | |
533 | time is the most recently selected one. The window with the lowest use | |
534 | time is the least recently selected one. */) | |
535 | (Lisp_Object window) | |
536 | { | |
537 | return decode_window (window)->use_time; | |
b3a10345 | 538 | } |
abde8f8c MR |
539 | \f |
540 | DEFUN ("window-total-size", Fwindow_total_size, Swindow_total_size, 0, 2, 0, | |
541 | doc: /* Return the total number of lines of WINDOW. | |
542 | WINDOW can be any window and defaults to the selected one. The return | |
543 | value includes WINDOW's mode line and header line, if any. If WINDOW | |
544 | is internal, the return value is the sum of the total number of lines | |
545 | of WINDOW's child windows if these are vertically combined and the | |
546 | height of WINDOW's first child otherwise. | |
547 | ||
548 | Optional argument HORIZONTAL non-nil means return the total number of | |
549 | columns of WINDOW. In this case the return value includes any vertical | |
550 | dividers or scrollbars of WINDOW. If WINDOW is internal, the return | |
551 | value is the sum of the total number of columns of WINDOW's child | |
552 | windows if they are horizontally combined and the width of WINDOW's | |
553 | first child otherwise. */) | |
554 | (Lisp_Object window, Lisp_Object horizontal) | |
555 | { | |
556 | if (NILP (horizontal)) | |
557 | return decode_any_window (window)->total_lines; | |
558 | else | |
559 | return decode_any_window (window)->total_cols; | |
560 | } | |
b3a10345 | 561 | |
496e208e MR |
562 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
563 | doc: /* Return new total size of WINDOW. | |
564 | WINDOW defaults to the selected window. */) | |
565 | (Lisp_Object window) | |
566 | { | |
567 | return decode_any_window (window)->new_total; | |
568 | } | |
569 | ||
570 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
571 | doc: /* Return normal height of WINDOW. | |
572 | WINDOW can be any window and defaults to the selected one. Optional | |
573 | argument HORIZONTAL non-nil means return normal width of WINDOW. */) | |
574 | (Lisp_Object window, Lisp_Object horizontal) | |
575 | { | |
576 | if (NILP (horizontal)) | |
577 | return decode_any_window (window)->normal_lines; | |
578 | else | |
579 | return decode_any_window (window)->normal_cols; | |
580 | } | |
581 | ||
582 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
583 | doc: /* Return new normal size of WINDOW. | |
584 | WINDOW can be any window and defaults to the selected one. */) | |
585 | (Lisp_Object window) | |
586 | { | |
587 | return decode_any_window (window)->new_normal; | |
588 | } | |
589 | ||
abde8f8c MR |
590 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
591 | doc: /* Return left column of WINDOW. | |
592 | WINDOW can be any window and defaults to the selected one. */) | |
593 | (Lisp_Object window) | |
594 | { | |
595 | return decode_any_window (window)->left_col; | |
596 | } | |
597 | ||
598 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
599 | doc: /* Return top line of WINDOW. | |
600 | WINDOW can be any window and defaults to the selected one. */) | |
601 | (Lisp_Object window) | |
602 | { | |
603 | return decode_any_window (window)->top_line; | |
604 | } | |
605 | ||
606 | /* Return the number of lines of W's body. Don't count any mode or | |
607 | header line of W. */ | |
608 | ||
46a4ce9e | 609 | static int |
abde8f8c MR |
610 | window_body_lines (struct window *w) |
611 | { | |
612 | int height = XFASTINT (w->total_lines); | |
613 | ||
614 | if (!MINI_WINDOW_P (w)) | |
615 | { | |
616 | if (WINDOW_WANTS_MODELINE_P (w)) | |
617 | --height; | |
618 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
619 | --height; | |
620 | } | |
621 | ||
622 | return height; | |
623 | } | |
624 | ||
625 | /* Return the number of columns of W's body. Don't count columns | |
626 | occupied by the scroll bar or the vertical bar separating W from its | |
627 | right sibling. On window-systems don't count fringes or display | |
628 | margins either. */ | |
629 | ||
630 | int | |
631 | window_body_cols (struct window *w) | |
632 | { | |
633 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
634 | int width = XINT (w->total_cols); | |
635 | ||
636 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
637 | /* Scroll bars occupy a few columns. */ | |
638 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
639 | else if (!FRAME_WINDOW_P (f) | |
640 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
641 | /* The column of `|' characters separating side-by-side windows | |
642 | occupies one column only. */ | |
643 | width -= 1; | |
644 | ||
645 | if (FRAME_WINDOW_P (f)) | |
646 | /* On window-systems, fringes and display margins cannot be | |
647 | used for normal text. */ | |
648 | width -= (WINDOW_FRINGE_COLS (w) | |
649 | + WINDOW_LEFT_MARGIN_COLS (w) | |
650 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
651 | ||
652 | return width; | |
653 | } | |
654 | ||
655 | DEFUN ("window-body-size", Fwindow_body_size, Swindow_body_size, 0, 2, 0, | |
656 | doc: /* Return the number of lines of WINDOW's body. | |
657 | WINDOW must be a live window and defaults to the selected one. The | |
658 | return value does not include WINDOW's mode line and header line, if | |
659 | any. | |
660 | ||
661 | Optional argument HORIZONTAL non-nil means return the number of columns | |
662 | of WINDOW's body. In this case, the return value does not include any | |
663 | vertical dividers or scroll bars owned by WINDOW. On a window-system | |
664 | the return value does not include the number of columns used for | |
665 | WINDOW's fringes or display margins either. */) | |
666 | (Lisp_Object window, Lisp_Object horizontal) | |
667 | { | |
668 | struct window *w = decode_any_window (window); | |
669 | ||
670 | if (NILP (horizontal)) | |
671 | return make_number (window_body_lines (w)); | |
672 | else | |
673 | return make_number (window_body_cols (w)); | |
674 | } | |
536833ab | 675 | |
7ab12479 | 676 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 677 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 678 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 679 | (Lisp_Object window) |
7ab12479 JB |
680 | { |
681 | return decode_window (window)->hscroll; | |
682 | } | |
683 | ||
684 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 685 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
0cf34688 | 686 | If WINDOW is nil, the selected window is used. |
a0a37a6f | 687 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
688 | |
689 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 690 | window so that the location of point moves off-window. */) |
5842a27b | 691 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 692 | { |
ea68264b GM |
693 | struct window *w = decode_window (window); |
694 | int hscroll; | |
7ab12479 | 695 | |
b7826503 | 696 | CHECK_NUMBER (ncol); |
ea68264b | 697 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 698 | |
ea68264b GM |
699 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
700 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 701 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 702 | |
c67fa410 | 703 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
704 | return ncol; |
705 | } | |
706 | ||
190eb263 RS |
707 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
708 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 709 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 710 | WINDOW defaults to the selected window. |
fdb82f93 | 711 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 712 | (Lisp_Object window) |
190eb263 RS |
713 | { |
714 | return decode_window (window)->redisplay_end_trigger; | |
715 | } | |
716 | ||
717 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
718 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
719 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
720 | VALUE should be a buffer position (typically a marker) or nil. | |
721 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
722 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
723 | with two arguments: WINDOW, and the end trigger value. | |
724 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 725 | (register Lisp_Object window, Lisp_Object value) |
190eb263 RS |
726 | { |
727 | register struct window *w; | |
728 | ||
729 | w = decode_window (window); | |
730 | w->redisplay_end_trigger = value; | |
731 | return value; | |
732 | } | |
733 | ||
7ab12479 | 734 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 735 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
736 | The list has the form (LEFT TOP RIGHT BOTTOM). |
737 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
738 | all relative to 0, 0 at top left corner of frame. | |
739 | ||
740 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
741 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
742 | The edges include the space used by WINDOW's scroll bar, display | |
743 | margins, fringes, header line, and/or mode line. For the edges of | |
744 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 745 | (Lisp_Object window) |
7ab12479 | 746 | { |
6b61353c | 747 | register struct window *w = decode_any_window (window); |
7ab12479 | 748 | |
949cf20f KS |
749 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
750 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
751 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
752 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
753 | Qnil)))); | |
7ab12479 JB |
754 | } |
755 | ||
c99a9eb3 RS |
756 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
757 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
758 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
759 | the top left corner of the frame. | |
760 | ||
761 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
762 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
763 | The pixel edges include the space used by WINDOW's scroll bar, display | |
764 | margins, fringes, header line, and/or mode line. For the pixel edges | |
765 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 766 | (Lisp_Object window) |
c99a9eb3 | 767 | { |
6b61353c | 768 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
769 | |
770 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
771 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
772 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
773 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
774 | Qnil)))); | |
775 | } | |
776 | ||
9d5405ec J |
777 | static void |
778 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) | |
779 | { | |
780 | struct frame *f = XFRAME (w->frame); | |
781 | *add_y = f->top_pos; | |
782 | #ifdef FRAME_MENUBAR_HEIGHT | |
783 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
784 | #endif | |
bfeabdc3 JD |
785 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
786 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
787 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
788 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
789 | #endif | |
790 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
791 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
792 | #endif | |
793 | *add_x = f->left_pos; | |
bfeabdc3 JD |
794 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
795 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
796 | #endif | |
9d5405ec J |
797 | } |
798 | ||
799 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
800 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
801 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
802 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
803 | the top left corner of the display. | |
804 | ||
805 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
806 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
807 | The pixel edges include the space used by WINDOW's scroll bar, display | |
808 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 809 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 810 | (Lisp_Object window) |
9d5405ec J |
811 | { |
812 | register struct window *w = decode_any_window (window); | |
813 | int add_x, add_y; | |
ed3751c8 | 814 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
815 | |
816 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
817 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
818 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
819 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
820 | Qnil)))); | |
821 | } | |
822 | ||
c99a9eb3 RS |
823 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
824 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
825 | The list has the form (LEFT TOP RIGHT BOTTOM). |
826 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
827 | all relative to 0, 0 at top left corner of frame. | |
828 | ||
829 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
830 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
831 | The inside edges do not include the space used by the WINDOW's scroll | |
832 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 833 | (Lisp_Object window) |
c99a9eb3 | 834 | { |
6b61353c | 835 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
836 | |
837 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
838 | + WINDOW_LEFT_MARGIN_COLS (w) | |
839 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
840 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
841 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 842 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
843 | - WINDOW_RIGHT_MARGIN_COLS (w) |
844 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
845 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
846 | - WINDOW_MODE_LINE_LINES (w))); | |
847 | } | |
848 | ||
849 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 850 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
851 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
852 | the top left corner of the frame. | |
853 | ||
854 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
855 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
856 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 857 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 858 | (Lisp_Object window) |
c99a9eb3 | 859 | { |
6b61353c | 860 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
861 | |
862 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
863 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
864 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
865 | make_number (WINDOW_TOP_EDGE_Y (w) | |
866 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 867 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
868 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
869 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
870 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
871 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
872 | } | |
873 | ||
9d5405ec J |
874 | DEFUN ("window-inside-absolute-pixel-edges", |
875 | Fwindow_inside_absolute_pixel_edges, | |
876 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
877 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
878 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
879 | the top left corner of the display. | |
880 | ||
881 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
882 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
883 | The inside edges do not include the space used by WINDOW's scroll bar, | |
884 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 885 | (Lisp_Object window) |
9d5405ec J |
886 | { |
887 | register struct window *w = decode_any_window (window); | |
888 | int add_x, add_y; | |
ed3751c8 | 889 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
890 | |
891 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
892 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
893 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
894 | make_number (WINDOW_TOP_EDGE_Y (w) | |
895 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
896 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
897 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
898 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
899 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
900 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
901 | } | |
902 | ||
9173a8fb | 903 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 904 | If it is not, return ON_NOTHING; |
9173a8fb | 905 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 906 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 907 | if it is on the border between the window and its right sibling, |
341f3858 | 908 | return ON_VERTICAL_BORDER. |
9173a8fb | 909 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 910 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 911 | if it is in left or right fringe of the window, |
9173a8fb | 912 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 913 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 914 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
915 | |
916 | X and Y are frame relative pixel coordinates. */ | |
917 | ||
7442878f | 918 | static enum window_part |
9173a8fb | 919 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 920 | { |
b0228ace | 921 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
9173a8fb | 922 | int left_x, right_x; |
7442878f | 923 | enum window_part part; |
949cf20f KS |
924 | int ux = FRAME_COLUMN_WIDTH (f); |
925 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
926 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
927 | /* The width of the area where the vertical line can be dragged. |
928 | (Between mode lines for instance. */ | |
929 | int grabbable_width = ux; | |
949cf20f | 930 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb CY |
931 | int top_y = WINDOW_TOP_EDGE_Y (w); |
932 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
933 | ||
934 | /* Outside any interesting row? */ | |
935 | if (y < top_y || y >= bottom_y) | |
936 | return ON_NOTHING; | |
b0228ace | 937 | |
466539bc EZ |
938 | /* In what's below, we subtract 1 when computing right_x because we |
939 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
940 | if (w->pseudo_window_p) |
941 | { | |
942 | left_x = 0; | |
949cf20f | 943 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
944 | } |
945 | else | |
946 | { | |
949cf20f KS |
947 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
948 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 949 | } |
37962e60 | 950 | |
1cb794ba GM |
951 | /* On the mode line or header line? If it's near the start of |
952 | the mode or header line of window that's has a horizontal | |
953 | sibling, say it's on the vertical line. That's to be able | |
954 | to resize windows horizontally in case we're using toolkit | |
955 | scroll bars. */ | |
b0228ace | 956 | |
1cb794ba | 957 | if (WINDOW_WANTS_MODELINE_P (w) |
9173a8fb | 958 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 959 | { |
949cf20f KS |
960 | part = ON_MODE_LINE; |
961 | ||
962 | header_vertical_border_check: | |
b0228ace GM |
963 | /* We're somewhere on the mode line. We consider the place |
964 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 965 | as the vertical border. If scroll bars on the left, |
b0228ace | 966 | return the right window. */ |
9173a8fb CY |
967 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
968 | || WINDOW_RIGHTMOST_P (w)) | |
969 | && !WINDOW_LEFTMOST_P (w) | |
970 | && eabs (x - x0) < grabbable_width) | |
971 | return ON_VERTICAL_BORDER; | |
972 | ||
973 | /* Make sure we're not at the rightmost position of a | |
974 | mode-/header-line and there's yet another window on the | |
975 | right. (Bug#1372) */ | |
976 | else if ((WINDOW_RIGHTMOST_P (w) || x < x1) | |
977 | && eabs (x - x1) < grabbable_width) | |
978 | return ON_VERTICAL_BORDER; | |
979 | ||
980 | if (x < x0 || x >= x1) | |
cb639b8f KS |
981 | return ON_NOTHING; |
982 | ||
949cf20f | 983 | return part; |
b0228ace | 984 | } |
949cf20f KS |
985 | |
986 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
9173a8fb | 987 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 988 | { |
949cf20f KS |
989 | part = ON_HEADER_LINE; |
990 | goto header_vertical_border_check; | |
1cb794ba | 991 | } |
949cf20f | 992 | |
9173a8fb | 993 | if (x < x0 || x >= x1) return ON_NOTHING; |
cb639b8f | 994 | |
949cf20f | 995 | /* Outside any interesting column? */ |
9173a8fb CY |
996 | if (x < left_x || x > right_x) |
997 | return ON_SCROLL_BAR; | |
949cf20f KS |
998 | |
999 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1000 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1001 | |
949cf20f KS |
1002 | text_left = window_box_left (w, TEXT_AREA); |
1003 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1004 | ||
1005 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1006 | { |
447e9da0 | 1007 | if (!w->pseudo_window_p |
949cf20f | 1008 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1009 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1010 | && (eabs (x - right_x) < grabbable_width)) |
1011 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1012 | } |
9173a8fb CY |
1013 | /* Need to say "x > right_x" rather than >=, since on character |
1014 | terminals, the vertical line's x coordinate is right_x. */ | |
1015 | else if (!w->pseudo_window_p | |
1016 | && !WINDOW_RIGHTMOST_P (w) | |
1017 | && x > right_x - ux) | |
1018 | return ON_VERTICAL_BORDER; | |
1019 | ||
1020 | if (x < text_left) | |
949cf20f KS |
1021 | { |
1022 | if (lmargin_width > 0 | |
1023 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1024 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1025 | : (x < left_x + lmargin_width))) | |
1026 | return ON_LEFT_MARGIN; | |
1027 | ||
949cf20f KS |
1028 | return ON_LEFT_FRINGE; |
1029 | } | |
1030 | ||
9173a8fb | 1031 | if (x >= text_right) |
949cf20f KS |
1032 | { |
1033 | if (rmargin_width > 0 | |
1034 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1035 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1036 | : (x >= right_x - rmargin_width))) | |
1037 | return ON_RIGHT_MARGIN; | |
1038 | ||
949cf20f KS |
1039 | return ON_RIGHT_FRINGE; |
1040 | } | |
1041 | ||
1042 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1043 | return ON_TEXT; |
d5783c40 JB |
1044 | } |
1045 | ||
9173a8fb CY |
1046 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1047 | x-coordinate relative to part PART of window W. */ | |
1048 | int | |
1049 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1050 | { | |
1051 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1052 | ||
1053 | switch (part) | |
1054 | { | |
1055 | case ON_TEXT: | |
1056 | return x - window_box_left (w, TEXT_AREA); | |
1057 | ||
1058 | case ON_LEFT_FRINGE: | |
1059 | return x - left_x; | |
1060 | ||
1061 | case ON_RIGHT_FRINGE: | |
1062 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1063 | ||
1064 | case ON_LEFT_MARGIN: | |
1065 | return (x - left_x | |
1066 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1067 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1068 | ||
1069 | case ON_RIGHT_MARGIN: | |
1070 | return (x + 1 | |
1071 | - ((w->pseudo_window_p) | |
1072 | ? WINDOW_TOTAL_WIDTH (w) | |
1073 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1074 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1075 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1076 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1077 | } | |
1078 | ||
1079 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1080 | return 0; | |
1081 | } | |
1082 | ||
b0228ace | 1083 | |
d5783c40 | 1084 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1085 | Scoordinates_in_window_p, 2, 2, 0, |
1086 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
1087 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
1088 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1089 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1090 | frame. |
1091 | If COORDINATES are in the text portion of WINDOW, | |
1092 | the coordinates relative to the window are returned. | |
1093 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1094 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1095 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1096 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1097 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1098 | `vertical-line' is returned. |
1099 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1100 | or `right-margin' is returned. */) | |
5842a27b | 1101 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1102 | { |
5500c422 GM |
1103 | struct window *w; |
1104 | struct frame *f; | |
d5783c40 | 1105 | int x, y; |
5500c422 | 1106 | Lisp_Object lx, ly; |
d5783c40 | 1107 | |
6b61353c | 1108 | CHECK_WINDOW (window); |
5500c422 GM |
1109 | w = XWINDOW (window); |
1110 | f = XFRAME (w->frame); | |
b7826503 | 1111 | CHECK_CONS (coordinates); |
5500c422 GM |
1112 | lx = Fcar (coordinates); |
1113 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1114 | CHECK_NUMBER_OR_FLOAT (lx); |
1115 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1116 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1117 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1118 | |
9173a8fb | 1119 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1120 | { |
7442878f | 1121 | case ON_NOTHING: |
d5783c40 JB |
1122 | return Qnil; |
1123 | ||
7442878f | 1124 | case ON_TEXT: |
9173a8fb CY |
1125 | /* Convert X and Y to window relative pixel coordinates, and |
1126 | return the canonical char units. */ | |
1127 | x -= window_box_left (w, TEXT_AREA); | |
1128 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1129 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1130 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1131 | |
7442878f | 1132 | case ON_MODE_LINE: |
d5783c40 | 1133 | return Qmode_line; |
37962e60 | 1134 | |
7442878f | 1135 | case ON_VERTICAL_BORDER: |
e5d77022 | 1136 | return Qvertical_line; |
d5783c40 | 1137 | |
7442878f | 1138 | case ON_HEADER_LINE: |
045dee35 | 1139 | return Qheader_line; |
5500c422 | 1140 | |
7442878f GM |
1141 | case ON_LEFT_FRINGE: |
1142 | return Qleft_fringe; | |
177c0ea7 | 1143 | |
7442878f GM |
1144 | case ON_RIGHT_FRINGE: |
1145 | return Qright_fringe; | |
fbad6f9a | 1146 | |
49b996e7 GM |
1147 | case ON_LEFT_MARGIN: |
1148 | return Qleft_margin; | |
177c0ea7 | 1149 | |
49b996e7 GM |
1150 | case ON_RIGHT_MARGIN: |
1151 | return Qright_margin; | |
1152 | ||
6487f669 RS |
1153 | case ON_SCROLL_BAR: |
1154 | /* Historically we are supposed to return nil in this case. */ | |
1155 | return Qnil; | |
1156 | ||
d5783c40 JB |
1157 | default: |
1158 | abort (); | |
1159 | } | |
1160 | } | |
1161 | ||
67492200 GM |
1162 | |
1163 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1164 | Check if window W contains coordinates specified by USER_DATA which |
1165 | is actually a pointer to a struct check_window_data CW. | |
1166 | ||
1167 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1168 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1169 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1170 | zero from this function to stop iterating over windows. */ |
1171 | ||
1172 | struct check_window_data | |
1173 | { | |
1174 | Lisp_Object *window; | |
9173a8fb | 1175 | int x, y; |
341f3858 | 1176 | enum window_part *part; |
f95464e4 | 1177 | }; |
67492200 GM |
1178 | |
1179 | static int | |
971de7fb | 1180 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1181 | { |
f95464e4 | 1182 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1183 | enum window_part found; |
1184 | int continue_p = 1; | |
67492200 | 1185 | |
f95464e4 | 1186 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1187 | if (found != ON_NOTHING) |
67492200 | 1188 | { |
341f3858 | 1189 | *cw->part = found; |
f95464e4 | 1190 | XSETWINDOW (*cw->window, w); |
7442878f | 1191 | continue_p = 0; |
67492200 | 1192 | } |
177c0ea7 | 1193 | |
7442878f | 1194 | return continue_p; |
67492200 GM |
1195 | } |
1196 | ||
1197 | ||
5500c422 | 1198 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1199 | return it as a Lisp_Object. |
1200 | ||
1201 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1202 | set *PART to the id of that element. |
949cf20f | 1203 | |
341f3858 | 1204 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1205 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1206 | ||
1207 | This function was previously implemented with a loop cycling over | |
1208 | windows with Fnext_window, and starting with the frame's selected | |
1209 | window. It turned out that this doesn't work with an | |
1210 | implementation of next_window using Vwindow_list, because | |
1211 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1212 | tree of F when this function is called asynchronously from | |
1213 | note_mouse_highlight. The original loop didn't terminate in this | |
1214 | case. */ | |
5500c422 | 1215 | |
7ab12479 | 1216 | Lisp_Object |
9173a8fb CY |
1217 | window_from_coordinates (struct frame *f, int x, int y, |
1218 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1219 | { |
67492200 | 1220 | Lisp_Object window; |
f95464e4 | 1221 | struct check_window_data cw; |
341f3858 KS |
1222 | enum window_part dummy; |
1223 | ||
1224 | if (part == 0) | |
1225 | part = &dummy; | |
5500c422 | 1226 | |
67492200 | 1227 | window = Qnil; |
9173a8fb | 1228 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1229 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1230 | |
67492200 GM |
1231 | /* If not found above, see if it's in the tool bar window, if a tool |
1232 | bar exists. */ | |
1233 | if (NILP (window) | |
1234 | && tool_bar_p | |
1235 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1236 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
9173a8fb | 1237 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
7442878f | 1238 | != ON_NOTHING)) |
5500c422 | 1239 | { |
341f3858 | 1240 | *part = ON_TEXT; |
67492200 | 1241 | window = f->tool_bar_window; |
5500c422 | 1242 | } |
37962e60 | 1243 | |
67492200 | 1244 | return window; |
7ab12479 JB |
1245 | } |
1246 | ||
ab17c3f2 | 1247 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1248 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1249 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1250 | The top left corner of the frame is considered to be row 0, |
1251 | column 0. */) | |
5842a27b | 1252 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1253 | { |
5500c422 | 1254 | struct frame *f; |
7ab12479 | 1255 | |
44fa5b1e | 1256 | if (NILP (frame)) |
1ae1a37d | 1257 | frame = selected_frame; |
b7826503 | 1258 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1259 | f = XFRAME (frame); |
7ab12479 | 1260 | |
5500c422 | 1261 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1262 | CHECK_NUMBER_OR_FLOAT (x); |
1263 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1264 | |
177c0ea7 | 1265 | return window_from_coordinates (f, |
2c77cf3b RS |
1266 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1267 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1268 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1269 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1270 | 0, 0); |
7ab12479 JB |
1271 | } |
1272 | ||
1273 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1274 | doc: /* Return current value of point in WINDOW. |
496e208e | 1275 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1276 | |
fdb82f93 PJ |
1277 | For a nonselected window, this is the value point would have |
1278 | if that window were selected. | |
1279 | ||
1280 | Note that, when WINDOW is the selected window and its buffer | |
1281 | is also currently selected, the value returned is the same as (point). | |
1282 | It would be more strictly correct to return the `top-level' value | |
1283 | of point, outside of any save-excursion forms. | |
1284 | But that is hard to define. */) | |
5842a27b | 1285 | (Lisp_Object window) |
7ab12479 JB |
1286 | { |
1287 | register struct window *w = decode_window (window); | |
1288 | ||
1289 | if (w == XWINDOW (selected_window) | |
1290 | && current_buffer == XBUFFER (w->buffer)) | |
1291 | return Fpoint (); | |
1292 | return Fmarker_position (w->pointm); | |
1293 | } | |
1294 | ||
1295 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1296 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1297 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1298 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1299 | (Lisp_Object window) |
7ab12479 JB |
1300 | { |
1301 | return Fmarker_position (decode_window (window)->start); | |
1302 | } | |
1303 | ||
8646118f RS |
1304 | /* This is text temporarily removed from the doc string below. |
1305 | ||
fdb82f93 PJ |
1306 | This function returns nil if the position is not currently known. |
1307 | That happens when redisplay is preempted and doesn't finish. | |
1308 | If in that case you want to compute where the end of the window would | |
1309 | have been if redisplay had finished, do this: | |
1310 | (save-excursion | |
1311 | (goto-char (window-start window)) | |
1312 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1313 | (point))") */ |
1314 | ||
478292ed | 1315 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1316 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1317 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1318 | This is updated by redisplay, when it runs to completion. |
1319 | Simply changing the buffer text or setting `window-start' | |
1320 | does not update this value. | |
a0a37a6f LT |
1321 | Return nil if there is no recorded value. \(This can happen if the |
1322 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1323 | If UPDATE is non-nil, compute the up-to-date position |
1324 | if it isn't already recorded. */) | |
5842a27b | 1325 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1326 | { |
1327 | Lisp_Object value; | |
1328 | struct window *w = decode_window (window); | |
5a41ab94 | 1329 | Lisp_Object buf; |
31790df3 | 1330 | struct buffer *b; |
5a41ab94 RS |
1331 | |
1332 | buf = w->buffer; | |
b7826503 | 1333 | CHECK_BUFFER (buf); |
b3a10345 | 1334 | b = XBUFFER (buf); |
5a41ab94 | 1335 | |
8646118f | 1336 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1337 | /* If we don't know the end position, return nil. |
1338 | The user can compute it with vertical-motion if he wants to. | |
1339 | It would be nicer to do it automatically, | |
1340 | but that's so slow that it would probably bother people. */ | |
1341 | if (NILP (w->window_end_valid)) | |
1342 | return Qnil; | |
8646118f | 1343 | #endif |
7250968e | 1344 | |
478292ed RS |
1345 | if (! NILP (update) |
1346 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1347 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1348 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1349 | && !noninteractive) |
478292ed | 1350 | { |
cbc099e5 GM |
1351 | struct text_pos startp; |
1352 | struct it it; | |
b3a10345 | 1353 | struct buffer *old_buffer = NULL; |
57b3e30b | 1354 | void *itdata = NULL; |
b3a10345 KS |
1355 | |
1356 | /* Cannot use Fvertical_motion because that function doesn't | |
1357 | cope with variable-height lines. */ | |
1358 | if (b != current_buffer) | |
1359 | { | |
1360 | old_buffer = current_buffer; | |
1361 | set_buffer_internal (b); | |
1362 | } | |
2d6d9df0 GM |
1363 | |
1364 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1365 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1366 | `-l' containing a call to `rmail' with subsequent other |
1367 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1368 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1369 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1370 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1371 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1372 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1373 | else |
cbc099e5 GM |
1374 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1375 | ||
57b3e30b | 1376 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1377 | start_display (&it, w, startp); |
1378 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1379 | if (it.current_y < it.last_visible_y) |
1380 | move_it_past_eol (&it); | |
cbc099e5 | 1381 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1382 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1383 | |
99593a9d GM |
1384 | if (old_buffer) |
1385 | set_buffer_internal (old_buffer); | |
478292ed RS |
1386 | } |
1387 | else | |
b3a10345 | 1388 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1389 | |
1390 | return value; | |
1391 | } | |
1392 | ||
a7ca3326 | 1393 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f LT |
1394 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1395 | Return POS. */) | |
5842a27b | 1396 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1397 | { |
1398 | register struct window *w = decode_window (window); | |
1399 | ||
b7826503 | 1400 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1401 | if (w == XWINDOW (selected_window) |
1402 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1403 | Fgoto_char (pos); |
1404 | else | |
1405 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1406 | |
0685cb3c GM |
1407 | /* We have to make sure that redisplay updates the window to show |
1408 | the new value of point. */ | |
1409 | if (!EQ (window, selected_window)) | |
799417bd | 1410 | ++windows_or_buffers_changed; |
177c0ea7 | 1411 | |
7ab12479 JB |
1412 | return pos; |
1413 | } | |
1414 | ||
1415 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1416 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
0cf34688 | 1417 | If WINDOW is nil, the selected window is used. Return POS. |
d653c8cc MR |
1418 | Optional third arg NOFORCE non-nil inhibits next redisplay from |
1419 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1420 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1421 | { |
1422 | register struct window *w = decode_window (window); | |
1423 | ||
b7826503 | 1424 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1425 | set_marker_restricted (w->start, pos, w->buffer); |
1426 | /* this is not right, but much easier than doing what is right. */ | |
1427 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1428 | if (NILP (noforce)) |
7ab12479 JB |
1429 | w->force_start = Qt; |
1430 | w->update_mode_line = Qt; | |
d834a2e9 | 1431 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1432 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1433 | if (!EQ (window, selected_window)) |
1434 | windows_or_buffers_changed++; | |
ce7fae7d | 1435 | |
7ab12479 JB |
1436 | return pos; |
1437 | } | |
1438 | ||
496e208e MR |
1439 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1440 | Spos_visible_in_window_p, 0, 3, 0, | |
1441 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
1442 | Return nil if that position is scrolled vertically out of view. | |
1443 | If a character is only partially visible, nil is returned, unless the | |
1444 | optional argument PARTIALLY is non-nil. | |
1445 | If POS is only out of view because of horizontal scrolling, return non-nil. | |
1446 | If POS is t, it specifies the position of the last visible glyph in WINDOW. | |
1447 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. | |
1448 | ||
1449 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1450 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1451 | where X and Y are the pixel coordinates relative to the top left corner | |
1452 | of the window. The remaining elements are omitted if the character after | |
1453 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1454 | off-window at the top and bottom of the row, ROWH is the height of the | |
1455 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1456 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1457 | { | |
1458 | register struct window *w; | |
1459 | register EMACS_INT posint; | |
1460 | register struct buffer *buf; | |
1461 | struct text_pos top; | |
1462 | Lisp_Object in_window = Qnil; | |
1463 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1464 | int x, y; | |
1465 | ||
1466 | w = decode_window (window); | |
1467 | buf = XBUFFER (w->buffer); | |
1468 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
1469 | ||
1470 | if (EQ (pos, Qt)) | |
1471 | posint = -1; | |
1472 | else if (!NILP (pos)) | |
1473 | { | |
1474 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1475 | posint = XINT (pos); | |
1476 | } | |
1477 | else if (w == XWINDOW (selected_window)) | |
1478 | posint = PT; | |
1479 | else | |
1480 | posint = XMARKER (w->pointm)->charpos; | |
1481 | ||
1482 | /* If position is above window start or outside buffer boundaries, | |
1483 | or if window start is out of range, position is not visible. */ | |
1484 | if ((EQ (pos, Qt) | |
1485 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1486 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1487 | && CHARPOS (top) <= BUF_ZV (buf) | |
1488 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1489 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1490 | in_window = Qt; | |
1491 | ||
1492 | if (!NILP (in_window) && !NILP (partially)) | |
1493 | { | |
1494 | Lisp_Object part = Qnil; | |
1495 | if (!fully_p) | |
1496 | part = list4 (make_number (rtop), make_number (rbot), | |
1497 | make_number (rowh), make_number (vpos)); | |
1498 | in_window = Fcons (make_number (x), | |
1499 | Fcons (make_number (y), part)); | |
1500 | } | |
1501 | ||
1502 | return in_window; | |
1503 | } | |
1504 | ||
1505 | DEFUN ("window-line-height", Fwindow_line_height, | |
1506 | Swindow_line_height, 0, 2, 0, | |
1507 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
1508 | WINDOW defaults to the selected window. | |
1509 | ||
1510 | Return height of current line if LINE is omitted or nil. Return height of | |
1511 | header or mode line if LINE is `header-line' or `mode-line'. | |
1512 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1513 | counts from the end of the window. | |
1514 | ||
1515 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1516 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1517 | vertical position in lines and pixels of the line, relative to the top | |
1518 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1519 | the bottom of the text line. If there are off-window pixels at the top | |
1520 | of the (first) text line, YPOS is negative. | |
1521 | ||
1522 | Return nil if window display is not up-to-date. In that case, use | |
1523 | `pos-visible-in-window-p' to obtain the information. */) | |
1524 | (Lisp_Object line, Lisp_Object window) | |
1525 | { | |
1526 | register struct window *w; | |
1527 | register struct buffer *b; | |
1528 | struct glyph_row *row, *end_row; | |
1529 | int max_y, crop, i, n; | |
1530 | ||
1531 | w = decode_window (window); | |
1532 | ||
1533 | if (noninteractive || w->pseudo_window_p) | |
1534 | return Qnil; | |
1535 | ||
1536 | CHECK_BUFFER (w->buffer); | |
1537 | b = XBUFFER (w->buffer); | |
1538 | ||
1539 | /* Fail if current matrix is not up-to-date. */ | |
1540 | if (NILP (w->window_end_valid) | |
1541 | || current_buffer->clip_changed | |
1542 | || current_buffer->prevent_redisplay_optimizations_p | |
1543 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
1544 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
1545 | return Qnil; | |
1546 | ||
1547 | if (NILP (line)) | |
1548 | { | |
1549 | i = w->cursor.vpos; | |
1550 | if (i < 0 || i >= w->current_matrix->nrows | |
1551 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1552 | return Qnil; | |
1553 | max_y = window_text_bottom_y (w); | |
1554 | goto found_row; | |
1555 | } | |
1556 | ||
1557 | if (EQ (line, Qheader_line)) | |
1558 | { | |
1559 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1560 | return Qnil; | |
1561 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1562 | if (!row->enabled_p) | |
1563 | return Qnil; | |
1564 | return list4 (make_number (row->height), | |
1565 | make_number (0), make_number (0), | |
1566 | make_number (0)); | |
1567 | } | |
1568 | ||
1569 | if (EQ (line, Qmode_line)) | |
1570 | { | |
1571 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1572 | if (!row->enabled_p) | |
1573 | return Qnil; | |
1574 | return list4 (make_number (row->height), | |
1575 | make_number (0), /* not accurate */ | |
1576 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
1577 | + window_text_bottom_y (w)), | |
1578 | make_number (0)); | |
1579 | } | |
1580 | ||
1581 | CHECK_NUMBER (line); | |
1582 | n = XINT (line); | |
1583 | ||
1584 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1585 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1586 | max_y = window_text_bottom_y (w); | |
1587 | i = 0; | |
1588 | ||
1589 | while ((n < 0 || i < n) | |
1590 | && row <= end_row && row->enabled_p | |
1591 | && row->y + row->height < max_y) | |
1592 | row++, i++; | |
1593 | ||
1594 | if (row > end_row || !row->enabled_p) | |
1595 | return Qnil; | |
1596 | ||
1597 | if (++n < 0) | |
1598 | { | |
1599 | if (-n > i) | |
1600 | return Qnil; | |
1601 | row += n; | |
1602 | i += n; | |
1603 | } | |
1604 | ||
1605 | found_row: | |
1606 | crop = max (0, (row->y + row->height) - max_y); | |
1607 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
1608 | make_number (i), | |
1609 | make_number (row->y), | |
1610 | make_number (crop)); | |
1611 | } | |
d653c8cc | 1612 | |
a7ca3326 | 1613 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1614 | 0, 1, 0, |
1615 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1616 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1617 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1618 | never called with WINDOW as its argument, or the value set by that | |
1619 | function was internally reset since its last call. WINDOW defaults to | |
1620 | the selected window. | |
1621 | ||
1622 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1623 | from displaying another buffer in it. `get-lru-window' and | |
1624 | `get-largest-window' treat dedicated windows specially. | |
1625 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1626 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1627 | ||
1628 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1629 | window, unless that window is "strongly" dedicated to its buffer, that | |
1630 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1631 | (Lisp_Object window) |
7ab12479 JB |
1632 | { |
1633 | return decode_window (window)->dedicated; | |
1634 | } | |
1635 | ||
d207b766 RS |
1636 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1637 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1638 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1639 | WINDOW must be a live window and defaults to the selected one. FLAG |
1640 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1641 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1642 | |
7bfac547 MR |
1643 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1644 | from displaying another buffer in it. `get-lru-window' and | |
1645 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1646 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1647 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1648 | and the containing frame. | |
7bfac547 MR |
1649 | |
1650 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1651 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1652 | displayed by a window, unless that window is strongly dedicated to its | |
1653 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1654 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1655 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1656 | { |
1657 | register struct window *w = decode_window (window); | |
1658 | ||
d653c8cc | 1659 | w->dedicated = flag; |
7ab12479 JB |
1660 | return w->dedicated; |
1661 | } | |
1662 | ||
496e208e MR |
1663 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1664 | 0, 1, 0, | |
1665 | doc: /* Return buffers previously shown in WINDOW. | |
1666 | WINDOW must be a live window and defaults to the selected one. | |
1667 | ||
1668 | The return value is either nil or a list of <buffer, window-start, | |
1669 | window-point> triples where buffer was previously shown in WINDOW. */) | |
1670 | (Lisp_Object window) | |
1671 | { | |
1672 | return decode_window (window)->prev_buffers; | |
1673 | } | |
1674 | ||
1675 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1676 | Sset_window_prev_buffers, 2, 2, 0, | |
1677 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
1678 | WINDOW must be a live window and defaults to the selected one. Return | |
1679 | PREV-BUFFERS. | |
1680 | ||
1681 | PREV-BUFFERS should be either nil or a list of <buffer, window-start, | |
1682 | window-point> triples where buffer was previously shown in WINDOW. */) | |
1683 | (Lisp_Object window, Lisp_Object prev_buffers) | |
1684 | { | |
9b1c252e | 1685 | return decode_window (window)->prev_buffers = prev_buffers; |
496e208e MR |
1686 | } |
1687 | ||
1688 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1689 | 0, 1, 0, | |
1690 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1691 | WINDOW must be a live window and defaults to the selected one. */) | |
1692 | (Lisp_Object window) | |
1693 | { | |
1694 | return decode_window (window)->next_buffers; | |
1695 | } | |
1696 | ||
1697 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1698 | Sset_window_next_buffers, 2, 2, 0, | |
1699 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
1700 | WINDOW must be a live window and defaults to the selected one. Return | |
1701 | NEXT-BUFFERS. | |
1702 | ||
1703 | NEXT-BUFFERS should be either nil or a list of buffers that have been | |
1704 | recently re-shown in WINDOW. */) | |
1705 | (Lisp_Object window, Lisp_Object next_buffers) | |
1706 | { | |
9b1c252e | 1707 | return decode_window (window)->next_buffers = next_buffers; |
496e208e | 1708 | } |
d653c8cc | 1709 | |
cfbb2395 JB |
1710 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1711 | 0, 1, 0, | |
d653c8cc MR |
1712 | doc: /* Return the parameters of WINDOW and their values. |
1713 | WINDOW defaults to the selected window. The return value is a list of | |
1714 | elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1715 | (Lisp_Object window) |
cfbb2395 | 1716 | { |
496e208e | 1717 | return Fcopy_alist (decode_any_window (window)->window_parameters); |
cfbb2395 JB |
1718 | } |
1719 | ||
1720 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1721 | 2, 2, 0, | |
d653c8cc MR |
1722 | doc: /* Return WINDOW's value for PARAMETER. |
1723 | WINDOW defaults to the selected window. */) | |
5842a27b | 1724 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1725 | { |
927abf37 JB |
1726 | Lisp_Object result; |
1727 | ||
496e208e | 1728 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1729 | return CDR_SAFE (result); |
cfbb2395 JB |
1730 | } |
1731 | ||
cfbb2395 JB |
1732 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1733 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1734 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1735 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1736 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1737 | { |
496e208e | 1738 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1739 | Lisp_Object old_alist_elt; |
1740 | ||
1741 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1742 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1743 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1744 | else | |
1745 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1746 | return value; |
cfbb2395 JB |
1747 | } |
1748 | ||
7ab12479 JB |
1749 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1750 | 0, 1, 0, | |
c85322d0 EZ |
1751 | doc: /* Return the display-table that WINDOW is using. |
1752 | WINDOW defaults to the selected window. */) | |
5842a27b | 1753 | (Lisp_Object window) |
7ab12479 JB |
1754 | { |
1755 | return decode_window (window)->display_table; | |
1756 | } | |
1757 | ||
5500c422 GM |
1758 | /* Get the display table for use on window W. This is either W's |
1759 | display table or W's buffer's display table. Ignore the specified | |
1760 | tables if they are not valid; if no valid table is specified, | |
1761 | return 0. */ | |
7ab12479 | 1762 | |
319315f1 | 1763 | struct Lisp_Char_Table * |
971de7fb | 1764 | window_display_table (struct window *w) |
7ab12479 | 1765 | { |
c756cdbe GM |
1766 | struct Lisp_Char_Table *dp = NULL; |
1767 | ||
1768 | if (DISP_TABLE_P (w->display_table)) | |
1769 | dp = XCHAR_TABLE (w->display_table); | |
1770 | else if (BUFFERP (w->buffer)) | |
1771 | { | |
1772 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1773 | |
4b4deea2 TT |
1774 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1775 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1776 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1777 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1778 | } | |
171d003c | 1779 | |
c756cdbe | 1780 | return dp; |
7ab12479 JB |
1781 | } |
1782 | ||
3a2712f9 | 1783 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1784 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1785 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1786 | { |
1787 | register struct window *w; | |
7ab12479 JB |
1788 | |
1789 | w = decode_window (window); | |
1790 | w->display_table = table; | |
1791 | return table; | |
1792 | } | |
1793 | \f | |
562dd5e9 | 1794 | /* Record info on buffer window W is displaying |
7ab12479 | 1795 | when it is about to cease to display that buffer. */ |
dfcf069d | 1796 | static void |
971de7fb | 1797 | unshow_buffer (register struct window *w) |
7ab12479 | 1798 | { |
12cae7c0 | 1799 | Lisp_Object buf; |
b73ea88e | 1800 | struct buffer *b; |
7ab12479 | 1801 | |
12cae7c0 | 1802 | buf = w->buffer; |
b73ea88e RS |
1803 | b = XBUFFER (buf); |
1804 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1805 | abort (); |
1806 | ||
573f41ab | 1807 | #if 0 |
7ab12479 JB |
1808 | if (w == XWINDOW (selected_window) |
1809 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1810 | /* Do this except when the selected window's buffer | |
1811 | is being removed from some other window. */ | |
573f41ab RS |
1812 | #endif |
1813 | /* last_window_start records the start position that this buffer | |
1814 | had in the last window to be disconnected from it. | |
1815 | Now that this statement is unconditional, | |
1816 | it is possible for the buffer to be displayed in the | |
1817 | selected window, while last_window_start reflects another | |
1818 | window which was recently showing the same buffer. | |
1819 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1820 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1821 | |
1822 | /* Point in the selected window's buffer | |
1823 | is actually stored in that buffer, and the window's pointm isn't used. | |
1824 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1825 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1826 | /* This line helps to fix Horsley's testbug.el bug. */ | |
4b4deea2 TT |
1827 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1828 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
1829 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) | |
b73ea88e RS |
1830 | temp_set_point_both (b, |
1831 | clip_to_bounds (BUF_BEGV (b), | |
1832 | XMARKER (w->pointm)->charpos, | |
1833 | BUF_ZV (b)), | |
1834 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1835 | marker_byte_position (w->pointm), | |
1836 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1837 | |
4b4deea2 TT |
1838 | if (WINDOWP (BVAR (b, last_selected_window)) |
1839 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
1840 | BVAR (b, last_selected_window) = Qnil; | |
7ab12479 JB |
1841 | } |
1842 | ||
1a13852e MR |
1843 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1844 | means change window structure only. Otherwise store geometry and | |
1845 | other settings as well. */ | |
dfcf069d | 1846 | static void |
1a13852e | 1847 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1848 | { |
1849 | register Lisp_Object tem; | |
1a13852e | 1850 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1851 | |
1a13852e MR |
1852 | /* If OLD is its frame's root window, then NEW is the new |
1853 | root window for that frame. */ | |
7f4161e0 | 1854 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
1a13852e MR |
1855 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = new; |
1856 | ||
1857 | if (setflag) | |
1858 | { | |
1859 | n->left_col = o->left_col; | |
1860 | n->top_line = o->top_line; | |
1861 | n->total_cols = o->total_cols; | |
1862 | n->total_lines = o->total_lines; | |
1863 | n->normal_cols = o->normal_cols; | |
1864 | o->normal_cols = make_float (1.0); | |
1865 | n->normal_lines = o->normal_lines; | |
1866 | o->normal_lines = make_float (1.0); | |
1867 | n->desired_matrix = n->current_matrix = 0; | |
1868 | n->vscroll = 0; | |
1869 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1870 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
1871 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
1872 | n->phys_cursor_type = -1; | |
1873 | n->phys_cursor_width = -1; | |
1874 | n->must_be_updated_p = 0; | |
1875 | n->pseudo_window_p = 0; | |
1876 | XSETFASTINT (n->window_end_vpos, 0); | |
1877 | XSETFASTINT (n->window_end_pos, 0); | |
1878 | n->window_end_valid = Qnil; | |
1879 | n->frozen_window_start_p = 0; | |
1a13852e MR |
1880 | } |
1881 | ||
1882 | n->next = tem = o->next; | |
265a9e55 | 1883 | if (!NILP (tem)) |
1a13852e | 1884 | XWINDOW (tem)->prev = new; |
7ab12479 | 1885 | |
1a13852e | 1886 | n->prev = tem = o->prev; |
265a9e55 | 1887 | if (!NILP (tem)) |
1a13852e | 1888 | XWINDOW (tem)->next = new; |
7ab12479 | 1889 | |
1a13852e | 1890 | n->parent = tem = o->parent; |
265a9e55 | 1891 | if (!NILP (tem)) |
7ab12479 JB |
1892 | { |
1893 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1a13852e | 1894 | XWINDOW (tem)->vchild = new; |
7ab12479 | 1895 | if (EQ (XWINDOW (tem)->hchild, old)) |
1a13852e | 1896 | XWINDOW (tem)->hchild = new; |
7ab12479 | 1897 | } |
1a13852e MR |
1898 | } |
1899 | ||
1900 | /* If window WINDOW and its parent window are iso-combined, merge | |
1901 | WINDOW's children into those of its parent window and mark WINDOW as | |
1902 | deleted. */ | |
1903 | ||
1904 | static void | |
1905 | recombine_windows (Lisp_Object window) | |
1906 | { | |
1907 | struct window *w, *p, *c; | |
1908 | Lisp_Object parent, child; | |
1909 | int horflag; | |
1910 | ||
1911 | w = XWINDOW (window); | |
1912 | parent = w->parent; | |
1913 | if (!NILP (parent) && NILP (w->nest)) | |
1914 | { | |
1915 | p = XWINDOW (parent); | |
1916 | if (((!NILP (p->vchild) && !NILP (w->vchild)) | |
1917 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1918 | /* WINDOW and PARENT are both either a vertical or a horizontal | |
1919 | combination. */ | |
1920 | { | |
1921 | horflag = NILP (w->vchild); | |
1922 | child = horflag ? w->hchild : w->vchild; | |
1923 | c = XWINDOW (child); | |
1924 | ||
1925 | /* Splice WINDOW's children into its parent's children and | |
1926 | assign new normal sizes. */ | |
1927 | if (NILP (w->prev)) | |
1928 | if (horflag) | |
1929 | p->hchild = child; | |
1930 | else | |
1931 | p->vchild = child; | |
1932 | else | |
1933 | { | |
1934 | c->prev = w->prev; | |
1935 | XWINDOW (w->prev)->next = child; | |
1936 | } | |
1937 | ||
1938 | while (c) | |
1939 | { | |
1940 | c->parent = parent; | |
1941 | ||
1942 | if (horflag) | |
1943 | c->normal_cols | |
1944 | = make_float (XFLOATINT (c->total_cols) | |
1945 | / XFLOATINT (p->total_cols)); | |
1946 | else | |
1947 | c->normal_lines | |
1948 | = make_float (XFLOATINT (c->total_lines) | |
1949 | / XFLOATINT (p->total_lines)); | |
1950 | ||
1951 | if (NILP (c->next)) | |
1952 | { | |
1953 | if (!NILP (w->next)) | |
1954 | { | |
1955 | c->next = w->next; | |
1956 | XWINDOW (c->next)->prev = child; | |
1957 | } | |
1958 | ||
1959 | c = 0; | |
1960 | } | |
1961 | else | |
1962 | { | |
1963 | child = c->next; | |
1964 | c = XWINDOW (child); | |
1965 | } | |
1966 | } | |
7ab12479 | 1967 | |
1a13852e MR |
1968 | /* WINDOW can be deleted now. */ |
1969 | w->vchild = w->hchild = Qnil; | |
1970 | } | |
1971 | } | |
7ab12479 | 1972 | } |
6198ccd0 MR |
1973 | |
1974 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 1975 | static void |
6198ccd0 MR |
1976 | delete_deletable_window (Lisp_Object window) |
1977 | { | |
1978 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
1979 | call1 (Qdelete_window, window); | |
1980 | } | |
1a13852e | 1981 | \f |
67492200 GM |
1982 | /*********************************************************************** |
1983 | Window List | |
1984 | ***********************************************************************/ | |
1985 | ||
f95464e4 GM |
1986 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1987 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 1988 | the window_list function. */ |
67492200 GM |
1989 | |
1990 | static int | |
971de7fb | 1991 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 1992 | { |
f95464e4 | 1993 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1994 | Lisp_Object window; |
1995 | XSETWINDOW (window, w); | |
212116d6 | 1996 | *list = Fcons (window, *list); |
67492200 GM |
1997 | return 1; |
1998 | } | |
1999 | ||
2000 | ||
2001 | /* Return a list of all windows, for use by next_window. If | |
2002 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2003 | list, cache it in Vwindow_list, and return that. */ | |
2004 | ||
2005 | static Lisp_Object | |
971de7fb | 2006 | window_list (void) |
67492200 GM |
2007 | { |
2008 | if (!CONSP (Vwindow_list)) | |
2009 | { | |
2010 | Lisp_Object tail; | |
212116d6 | 2011 | |
67492200 GM |
2012 | Vwindow_list = Qnil; |
2013 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
2014 | { |
2015 | Lisp_Object args[2]; | |
2016 | ||
2017 | /* We are visiting windows in canonical order, and add | |
2018 | new windows at the front of args[1], which means we | |
2019 | have to reverse this list at the end. */ | |
2020 | args[1] = Qnil; | |
2021 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
2022 | args[0] = Vwindow_list; | |
2023 | args[1] = Fnreverse (args[1]); | |
2024 | Vwindow_list = Fnconc (2, args); | |
2025 | } | |
67492200 | 2026 | } |
177c0ea7 | 2027 | |
67492200 GM |
2028 | return Vwindow_list; |
2029 | } | |
2030 | ||
2031 | ||
118ea242 GM |
2032 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2033 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2034 | |
118ea242 GM |
2035 | MINIBUF t means WINDOW may be minibuffer windows. |
2036 | `lambda' means WINDOW may not be a minibuffer window. | |
2037 | a window means a specific minibuffer window | |
67492200 | 2038 | |
118ea242 GM |
2039 | ALL_FRAMES t means search all frames, |
2040 | nil means search just current frame, | |
aa248733 MS |
2041 | `visible' means search just visible frames on the |
2042 | current terminal, | |
2043 | 0 means search visible and iconified frames on the | |
2044 | current terminal, | |
118ea242 GM |
2045 | a window means search the frame that window belongs to, |
2046 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2047 | |
2048 | static int | |
971de7fb | 2049 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2050 | { |
2051 | struct window *w = XWINDOW (window); | |
2052 | struct frame *f = XFRAME (w->frame); | |
2053 | int candidate_p = 1; | |
2054 | ||
2055 | if (!BUFFERP (w->buffer)) | |
2056 | candidate_p = 0; | |
2057 | else if (MINI_WINDOW_P (w) | |
2058 | && (EQ (minibuf, Qlambda) | |
2059 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2060 | { | |
2061 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2062 | If it is a window, consider only that one. */ | |
2063 | candidate_p = 0; | |
2064 | } | |
118ea242 GM |
2065 | else if (EQ (all_frames, Qt)) |
2066 | candidate_p = 1; | |
67492200 | 2067 | else if (NILP (all_frames)) |
118ea242 GM |
2068 | { |
2069 | xassert (WINDOWP (owindow)); | |
2070 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
2071 | } | |
67492200 GM |
2072 | else if (EQ (all_frames, Qvisible)) |
2073 | { | |
2074 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
2075 | candidate_p = FRAME_VISIBLE_P (f) |
2076 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2077 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
2078 | ||
67492200 GM |
2079 | } |
2080 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2081 | { | |
2082 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2083 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2084 | #ifdef HAVE_X_WINDOWS | |
2085 | /* Yuck!! If we've just created the frame and the | |
2086 | window-manager requested the user to place it | |
2087 | manually, the window may still not be considered | |
2088 | `visible'. I'd argue it should be at least | |
2089 | something like `iconified', but don't know how to do | |
2090 | that yet. --Stef */ | |
2091 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2092 | && !f->output_data.x->has_been_visible) | |
2093 | #endif | |
de509a60 SM |
2094 | ) |
2095 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2096 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 2097 | } |
67492200 GM |
2098 | else if (WINDOWP (all_frames)) |
2099 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
2100 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
2101 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
2102 | else if (FRAMEP (all_frames)) |
2103 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
2104 | |
2105 | return candidate_p; | |
2106 | } | |
2107 | ||
2108 | ||
2109 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2110 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2111 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2112 | |
2113 | static void | |
971de7fb | 2114 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
2115 | { |
2116 | if (NILP (*window)) | |
2117 | *window = selected_window; | |
2118 | else | |
b7826503 | 2119 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 2120 | |
67492200 GM |
2121 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2122 | does. */ | |
2123 | if (NILP (*minibuf)) | |
2124 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2125 | else if (!EQ (*minibuf, Qt)) | |
2126 | *minibuf = Qlambda; | |
177c0ea7 | 2127 | |
67492200 GM |
2128 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2129 | => count none of them, or a specific minibuffer window (the | |
2130 | active one) to count. */ | |
2131 | ||
2132 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2133 | if (NILP (*all_frames)) | |
2134 | *all_frames = (!EQ (*minibuf, Qlambda) | |
2135 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
2136 | : Qnil); | |
2137 | else if (EQ (*all_frames, Qvisible)) | |
2138 | ; | |
0f8fe9a2 | 2139 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2140 | ; |
2141 | else if (FRAMEP (*all_frames)) | |
2142 | ; | |
2143 | else if (!EQ (*all_frames, Qt)) | |
2144 | *all_frames = Qnil; | |
67492200 GM |
2145 | } |
2146 | ||
2147 | ||
ab6d1131 | 2148 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2149 | of windows. NEXT_P non-zero means return the next window. See the |
2150 | documentation string of next-window for the meaning of MINIBUF and | |
2151 | ALL_FRAMES. */ | |
2152 | ||
2153 | static Lisp_Object | |
971de7fb | 2154 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2155 | { |
2156 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2157 | |
67492200 GM |
2158 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2159 | return the first window on the frame. */ | |
2160 | if (FRAMEP (all_frames) | |
2161 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
2162 | return Fframe_first_window (all_frames); | |
177c0ea7 | 2163 | |
212116d6 | 2164 | if (next_p) |
67492200 GM |
2165 | { |
2166 | Lisp_Object list; | |
177c0ea7 | 2167 | |
67492200 GM |
2168 | /* Find WINDOW in the list of all windows. */ |
2169 | list = Fmemq (window, window_list ()); | |
2170 | ||
2171 | /* Scan forward from WINDOW to the end of the window list. */ | |
2172 | if (CONSP (list)) | |
2173 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2174 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2175 | break; |
2176 | ||
2177 | /* Scan from the start of the window list up to WINDOW. */ | |
2178 | if (!CONSP (list)) | |
2179 | for (list = Vwindow_list; | |
2180 | CONSP (list) && !EQ (XCAR (list), window); | |
2181 | list = XCDR (list)) | |
118ea242 | 2182 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2183 | break; |
2184 | ||
2185 | if (CONSP (list)) | |
2186 | window = XCAR (list); | |
2187 | } | |
2188 | else | |
2189 | { | |
2190 | Lisp_Object candidate, list; | |
177c0ea7 | 2191 | |
67492200 GM |
2192 | /* Scan through the list of windows for candidates. If there are |
2193 | candidate windows in front of WINDOW, the last one of these | |
2194 | is the one we want. If there are candidates following WINDOW | |
2195 | in the list, again the last one of these is the one we want. */ | |
2196 | candidate = Qnil; | |
2197 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2198 | { | |
2199 | if (EQ (XCAR (list), window)) | |
2200 | { | |
2201 | if (WINDOWP (candidate)) | |
2202 | break; | |
2203 | } | |
118ea242 GM |
2204 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2205 | all_frames)) | |
67492200 GM |
2206 | candidate = XCAR (list); |
2207 | } | |
2208 | ||
2209 | if (WINDOWP (candidate)) | |
2210 | window = candidate; | |
2211 | } | |
2212 | ||
2213 | return window; | |
2214 | } | |
7ab12479 | 2215 | |
7ab12479 | 2216 | |
a7ca3326 | 2217 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 | 2218 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
9397e56f MR |
2219 | WINDOW must be a live window and defaults to the selected one. The |
2220 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2221 | consider. | |
2222 | ||
2223 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2224 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2225 | even if the minibuffer is not active. Any other value means do not | |
2226 | consider the minibuffer window even if the minibuffer is active. | |
2227 | ||
2228 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2229 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2230 | minibuffer counts, consider all windows on all frames that share that | |
2231 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2232 | meanings: | |
2233 | ||
2234 | - t means consider all windows on all existing frames. | |
2235 | ||
2236 | - `visible' means consider all windows on all visible frames. | |
2237 | ||
2238 | - 0 (the number zero) means consider all windows on all visible and | |
2239 | iconified frames. | |
2240 | ||
2241 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2242 | |
ab6d1131 | 2243 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2244 | others. |
fdb82f93 PJ |
2245 | |
2246 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2247 | `next-window' to iterate through the entire cycle of acceptable | |
2248 | windows, eventually ending up back at the window you started with. | |
2249 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2250 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2251 | { |
67492200 | 2252 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2253 | } |
2254 | ||
67492200 | 2255 | |
26f6279d | 2256 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 | 2257 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
9397e56f MR |
2258 | WINDOW must be a live window and defaults to the selected one. The |
2259 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2260 | consider. | |
2261 | ||
2262 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2263 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2264 | even if the minibuffer is not active. Any other value means do not | |
2265 | consider the minibuffer window even if the minibuffer is active. | |
2266 | ||
2267 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2268 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2269 | minibuffer counts, consider all windows on all frames that share that | |
2270 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2271 | meanings: | |
2272 | ||
2273 | - t means consider all windows on all existing frames. | |
2274 | ||
2275 | - `visible' means consider all windows on all visible frames. | |
2276 | ||
2277 | - 0 (the number zero) means consider all windows on all visible and | |
2278 | iconified frames. | |
2279 | ||
2280 | - A frame means consider all windows on that frame only. | |
2281 | ||
2282 | Anything else means consider all windows on WINDOW's frame and no | |
2283 | others. | |
ab6d1131 MR |
2284 | |
2285 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2286 | use `previous-window' to iterate through the entire cycle of | |
2287 | acceptable windows, eventually ending up back at the window you | |
2288 | started with. `next-window' traverses the same cycle, in the | |
2289 | reverse order. */) | |
5842a27b | 2290 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2291 | { |
67492200 | 2292 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2293 | } |
2294 | ||
67492200 | 2295 | |
ab6d1131 | 2296 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2297 | for `next-window'. */ |
2298 | ||
2299 | static Lisp_Object | |
971de7fb | 2300 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2301 | { |
403de3b4 | 2302 | Lisp_Object tail, list, rest; |
67492200 GM |
2303 | |
2304 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2305 | list = Qnil; | |
177c0ea7 | 2306 | |
67492200 | 2307 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2308 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2309 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2310 | |
403de3b4 RS |
2311 | /* Rotate the list to start with WINDOW. */ |
2312 | list = Fnreverse (list); | |
2313 | rest = Fmemq (window, list); | |
2314 | if (!NILP (rest) && !EQ (rest, list)) | |
2315 | { | |
1725a7c9 | 2316 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2317 | ; |
2318 | XSETCDR (tail, Qnil); | |
2319 | list = nconc2 (rest, list); | |
2320 | } | |
2321 | return list; | |
67492200 GM |
2322 | } |
2323 | ||
2324 | ||
abde8f8c MR |
2325 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2326 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2327 | FRAME nil or omitted means use the selected frame. | |
2328 | WINDOW nil or omitted means use the selected window. | |
2329 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2330 | MINIBUF nil or omitted means include the minibuffer window only | |
2331 | if it's active. | |
2332 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2333 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2334 | { | |
2335 | if (NILP (window)) | |
2336 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; | |
2337 | CHECK_WINDOW (window); | |
2338 | if (NILP (frame)) | |
2339 | frame = selected_frame; | |
2340 | ||
2341 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2342 | error ("Window is on a different frame"); | |
2343 | ||
2344 | return window_list_1 (window, minibuf, frame); | |
2345 | } | |
2346 | ||
2347 | ||
1a13852e MR |
2348 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2349 | doc: /* Return a list of all live windows. | |
2350 | WINDOW specifies the first window to list and defaults to the selected | |
2351 | window. | |
2352 | ||
2353 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2354 | window only if the minibuffer is active. MINIBUF t means consider the | |
2355 | minibuffer window even if the minibuffer is not active. Any other value | |
2356 | means do not consider the minibuffer window even if the minibuffer is | |
2357 | active. | |
2358 | ||
2359 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2360 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2361 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2362 | frames that share that minibuffer too. The following non-nil values of | |
2363 | ALL-FRAMES have special meanings: | |
2364 | ||
2365 | - t means consider all windows on all existing frames. | |
2366 | ||
2367 | - `visible' means consider all windows on all visible frames. | |
2368 | ||
2369 | - 0 (the number zero) means consider all windows on all visible and | |
2370 | iconified frames. | |
2371 | ||
2372 | - A frame means consider all windows on that frame only. | |
2373 | ||
2374 | Anything else means consider all windows on WINDOW's frame and no | |
2375 | others. | |
2376 | ||
2377 | If WINDOW is not on the list of windows returned, some other window will | |
2378 | be listed first but no error is signalled. */) | |
2379 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) | |
2380 | { | |
2381 | return window_list_1 (window, minibuf, all_frames); | |
2382 | } | |
7ab12479 JB |
2383 | \f |
2384 | /* Look at all windows, performing an operation specified by TYPE | |
2385 | with argument OBJ. | |
75d8f668 | 2386 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2387 | Qnil, look at just the selected frame; |
89bca612 | 2388 | Qvisible, look at visible frames; |
75d8f668 | 2389 | a frame, just look at windows on that frame. |
85fe3b5e | 2390 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2391 | |
2392 | enum window_loop | |
2393 | { | |
2394 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2395 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2396 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2397 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2398 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2399 | }; |
2400 | ||
2401 | static Lisp_Object | |
971de7fb | 2402 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2403 | { |
118ea242 | 2404 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2405 | int frame_best_window_flag = 0; |
118ea242 | 2406 | struct frame *f; |
ffdc852d | 2407 | struct gcpro gcpro1; |
177c0ea7 | 2408 | |
44fa5b1e JB |
2409 | /* If we're only looping through windows on a particular frame, |
2410 | frame points to that frame. If we're looping through windows | |
2411 | on all frames, frame is 0. */ | |
2412 | if (FRAMEP (frames)) | |
118ea242 | 2413 | f = XFRAME (frames); |
44fa5b1e | 2414 | else if (NILP (frames)) |
118ea242 | 2415 | f = SELECTED_FRAME (); |
7ab12479 | 2416 | else |
118ea242 | 2417 | f = NULL; |
177c0ea7 | 2418 | |
118ea242 | 2419 | if (f) |
89bca612 | 2420 | frame_arg = Qlambda; |
0f8fe9a2 | 2421 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2422 | frame_arg = frames; |
89bca612 RS |
2423 | else if (EQ (frames, Qvisible)) |
2424 | frame_arg = frames; | |
118ea242 GM |
2425 | else |
2426 | frame_arg = Qt; | |
7ab12479 | 2427 | |
89bca612 RS |
2428 | /* frame_arg is Qlambda to stick to one frame, |
2429 | Qvisible to consider all visible frames, | |
2430 | or Qt otherwise. */ | |
2431 | ||
7ab12479 | 2432 | /* Pick a window to start with. */ |
017b2bad | 2433 | if (WINDOWP (obj)) |
118ea242 GM |
2434 | window = obj; |
2435 | else if (f) | |
2436 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2437 | else |
118ea242 | 2438 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2439 | |
cd2904bd | 2440 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2441 | GCPRO1 (windows); |
7ab12479 | 2442 | best_window = Qnil; |
118ea242 | 2443 | |
e67a1dea | 2444 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2445 | { |
118ea242 | 2446 | struct window *w; |
177c0ea7 | 2447 | |
118ea242 GM |
2448 | window = XCAR (windows); |
2449 | w = XWINDOW (window); | |
177c0ea7 | 2450 | |
118ea242 GM |
2451 | /* Note that we do not pay attention here to whether the frame |
2452 | is visible, since Fwindow_list skips non-visible frames if | |
2453 | that is desired, under the control of frame_arg. */ | |
2454 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2455 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2456 | consider all windows. */ | |
2457 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2458 | || (mini && minibuf_level > 0)) |
2459 | switch (type) | |
2460 | { | |
2461 | case GET_BUFFER_WINDOW: | |
118ea242 | 2462 | if (EQ (w->buffer, obj) |
9397e56f MR |
2463 | /* Don't find any minibuffer window except the one that |
2464 | is currently in use. */ | |
2465 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2466 | { |
9397e56f MR |
2467 | if (EQ (window, selected_window)) |
2468 | /* Preferably return the selected window. */ | |
ca2d5566 | 2469 | RETURN_UNGCPRO (window); |
9397e56f MR |
2470 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
2471 | && !frame_best_window_flag) | |
2472 | /* Prefer windows on the current frame (but don't | |
2473 | choose another one if we have one already). */ | |
118ea242 | 2474 | { |
9397e56f MR |
2475 | best_window = window; |
2476 | frame_best_window_flag = 1; | |
7ab12479 | 2477 | } |
9397e56f MR |
2478 | else if (NILP (best_window)) |
2479 | best_window = window; | |
7ab12479 JB |
2480 | } |
2481 | break; | |
2482 | ||
9397e56f MR |
2483 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2484 | /* We could simply check whether the buffer shown by window | |
2485 | is live, and show another buffer in case it isn't. */ | |
118ea242 | 2486 | if (EQ (w->buffer, obj)) |
7ab12479 | 2487 | { |
9397e56f MR |
2488 | /* Undedicate WINDOW. */ |
2489 | w->dedicated = Qnil; | |
2490 | /* Make WINDOW show the buffer returned by | |
2491 | other_buffer_safely, don't run any hooks. */ | |
2492 | set_window_buffer | |
2493 | (window, other_buffer_safely (w->buffer), 0, 0); | |
2494 | /* If WINDOW is the selected window, make its buffer | |
2495 | current. But do so only if the window shows the | |
2496 | current buffer (Bug#6454). */ | |
2497 | if (EQ (window, selected_window) | |
2498 | && XBUFFER (w->buffer) == current_buffer) | |
2499 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2500 | } |
2501 | break; | |
3f8ab7bd | 2502 | |
6b61353c KH |
2503 | case REDISPLAY_BUFFER_WINDOWS: |
2504 | if (EQ (w->buffer, obj)) | |
2505 | { | |
2506 | mark_window_display_accurate (window, 0); | |
2507 | w->update_mode_line = Qt; | |
2508 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2509 | ++update_mode_lines; | |
2510 | best_window = window; | |
2511 | } | |
2512 | break; | |
2513 | ||
3f8ab7bd RS |
2514 | /* Check for a window that has a killed buffer. */ |
2515 | case CHECK_ALL_WINDOWS: | |
118ea242 | 2516 | if (! NILP (w->buffer) |
4b4deea2 | 2517 | && NILP (BVAR (XBUFFER (w->buffer), name))) |
3f8ab7bd | 2518 | abort (); |
118ea242 | 2519 | break; |
6bbd7a29 GM |
2520 | |
2521 | case WINDOW_LOOP_UNUSED: | |
2522 | break; | |
7ab12479 | 2523 | } |
7ab12479 | 2524 | } |
7ab12479 | 2525 | |
118ea242 | 2526 | UNGCPRO; |
7ab12479 | 2527 | return best_window; |
37962e60 | 2528 | } |
605be8af | 2529 | |
3f8ab7bd RS |
2530 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2531 | ||
e3b27b31 | 2532 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2533 | void |
971de7fb | 2534 | check_all_windows (void) |
3f8ab7bd RS |
2535 | { |
2536 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2537 | } | |
2538 | ||
a7ca3326 | 2539 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2540 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2541 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2542 | the current buffer. | |
2543 | ||
2544 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2545 | ||
2546 | - t means consider all windows on all existing frames. | |
2547 | ||
2548 | - `visible' means consider all windows on all visible frames. | |
2549 | ||
2550 | - 0 (the number zero) means consider all windows on all visible | |
2551 | and iconified frames. | |
2552 | ||
2553 | - A frame means consider all windows on that frame only. | |
2554 | ||
2555 | Any other value of ALL-FRAMES means consider all windows on the | |
2556 | selected frame and no others. */) | |
2557 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2558 | { |
fec89261 MR |
2559 | Lisp_Object buffer; |
2560 | ||
2561 | if (NILP (buffer_or_name)) | |
2562 | buffer = Fcurrent_buffer (); | |
2563 | else | |
2564 | buffer = Fget_buffer (buffer_or_name); | |
2565 | ||
017b2bad | 2566 | if (BUFFERP (buffer)) |
496e208e | 2567 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2568 | else |
2569 | return Qnil; | |
2570 | } | |
2571 | ||
4b66faf3 | 2572 | static Lisp_Object |
1a13852e MR |
2573 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2574 | { | |
5386012d | 2575 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2576 | } |
2577 | ||
2578 | ||
2579 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2580 | Sdelete_other_windows_internal, 0, 2, "", | |
2581 | doc: /* Make WINDOW fill its frame. | |
2582 | Only the frame WINDOW is on is affected. WINDOW may be any window and | |
2583 | defaults to the selected one. | |
2584 | ||
2585 | Optional argument ROOT, if non-nil, must specify an internal window | |
2586 | containing WINDOW as a subwindow. If this is the case, replace ROOT by | |
2587 | WINDOW and leave alone any windows not contained in ROOT. | |
2588 | ||
2589 | When WINDOW is live try to reduce display jumps by keeping the text | |
2590 | previously visible in WINDOW in the same place on the frame. Doing this | |
2591 | depends on the value of (window-start WINDOW), so if calling this | |
2592 | function in a program gives strange scrolling, make sure the | |
2593 | window-start value is reasonable when this function is called. */) | |
2594 | (Lisp_Object window, Lisp_Object root) | |
2595 | { | |
2596 | struct window *w, *r, *s; | |
2597 | struct frame *f; | |
46a4ce9e PE |
2598 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
2599 | EMACS_INT startpos IF_LINT (= 0); | |
2600 | int top IF_LINT (= 0), new_top, resize_failed; | |
1a13852e MR |
2601 | |
2602 | w = decode_any_window (window); | |
2603 | XSETWINDOW (window, w); | |
2604 | f = XFRAME (w->frame); | |
2605 | ||
2606 | if (NILP (root)) | |
2607 | /* ROOT is the frame's root window. */ | |
2608 | { | |
2609 | root = FRAME_ROOT_WINDOW (f); | |
2610 | r = XWINDOW (root); | |
2611 | } | |
2612 | else | |
2613 | /* ROOT must be an ancestor of WINDOW. */ | |
2614 | { | |
2615 | r = decode_any_window (root); | |
2616 | pwindow = XWINDOW (window)->parent; | |
2617 | while (!NILP (pwindow)) | |
2618 | if (EQ (pwindow, root)) | |
2619 | break; | |
2620 | else | |
2621 | pwindow = XWINDOW (pwindow)->parent; | |
2622 | if (!EQ (pwindow, root)) | |
2623 | error ("Specified root is not an ancestor of specified window"); | |
2624 | } | |
2625 | ||
2626 | if (EQ (window, root)) | |
2627 | /* A noop. */ | |
2628 | return Qnil; | |
2629 | /* I don't understand the "top > 0" part below. If we deal with a | |
2630 | standalone minibuffer it would have been caught by the preceding | |
2631 | test. */ | |
2632 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2633 | error ("Can't expand minibuffer to full frame"); | |
2634 | ||
2635 | if (!NILP (w->buffer)) | |
2636 | { | |
2637 | startpos = marker_position (w->start); | |
2638 | top = WINDOW_TOP_EDGE_LINE (w) | |
2639 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2640 | /* Make sure WINDOW is the frame's selected window. */ | |
2641 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2642 | { | |
2643 | if (EQ (selected_frame, w->frame)) | |
2644 | Fselect_window (window, Qnil); | |
2645 | else | |
2646 | FRAME_SELECTED_WINDOW (f) = window; | |
2647 | } | |
2648 | } | |
2649 | else | |
2650 | { | |
2651 | /* See if the frame's selected window is a subwindow of WINDOW, by | |
2652 | finding all the selected window's parents and comparing each | |
2653 | one with WINDOW. If it isn't we need a new selected window for | |
2654 | this frame. */ | |
2655 | swindow = FRAME_SELECTED_WINDOW (f); | |
2656 | while (1) | |
2657 | { | |
2658 | pwindow = swindow; | |
2659 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
2660 | pwindow = XWINDOW (pwindow)->parent; | |
2661 | ||
2662 | if (EQ (window, pwindow)) | |
2663 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2664 | as the new selected window. */ | |
2665 | break; | |
2666 | else | |
2667 | /* Else try the previous window of SWINDOW. */ | |
2668 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2669 | } | |
2670 | ||
2671 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2672 | { | |
2673 | if (EQ (selected_frame, w->frame)) | |
2674 | Fselect_window (swindow, Qnil); | |
2675 | else | |
2676 | FRAME_SELECTED_WINDOW (f) = swindow; | |
2677 | } | |
2678 | } | |
2679 | ||
2680 | BLOCK_INPUT; | |
2681 | free_window_matrices (r); | |
2682 | ||
2683 | windows_or_buffers_changed++; | |
2684 | Vwindow_list = Qnil; | |
2685 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2686 | resize_failed = 0; |
1a13852e MR |
2687 | |
2688 | if (NILP (w->buffer)) | |
2689 | { | |
1a13852e MR |
2690 | /* Resize subwindows vertically. */ |
2691 | XSETINT (delta, XINT (r->total_lines) - XINT (w->total_lines)); | |
2692 | w->top_line = r->top_line; | |
2693 | resize_root_window (window, delta, Qnil, Qnil); | |
d615d6d2 MR |
2694 | if (window_resize_check (w, 0)) |
2695 | window_resize_apply (w, 0); | |
1a13852e MR |
2696 | else |
2697 | { | |
2698 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2699 | if (window_resize_check (w, 0)) |
2700 | window_resize_apply (w, 0); | |
1a13852e MR |
2701 | else |
2702 | resize_failed = 1; | |
2703 | } | |
2704 | ||
2705 | /* Resize subwindows horizontally. */ | |
2706 | if (!resize_failed) | |
2707 | { | |
2708 | w->left_col = r->left_col; | |
2709 | XSETINT (delta, XINT (r->total_cols) - XINT (w->total_cols)); | |
2710 | w->left_col = r->left_col; | |
2711 | resize_root_window (window, delta, Qt, Qnil); | |
d615d6d2 MR |
2712 | if (window_resize_check (w, 1)) |
2713 | window_resize_apply (w, 1); | |
1a13852e MR |
2714 | else |
2715 | { | |
2716 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2717 | if (window_resize_check (w, 1)) |
2718 | window_resize_apply (w, 1); | |
1a13852e MR |
2719 | else |
2720 | resize_failed = 1; | |
2721 | } | |
2722 | } | |
2723 | ||
2724 | if (resize_failed) | |
2725 | /* Play safe, if we still can ... */ | |
2726 | { | |
2727 | window = swindow; | |
2728 | w = XWINDOW (window); | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | /* Cleanly unlink WINDOW from window-tree. */ | |
2733 | if (!NILP (w->prev)) | |
2734 | /* Get SIBLING above (on the left of) WINDOW. */ | |
2735 | { | |
2736 | sibling = w->prev; | |
2737 | s = XWINDOW (sibling); | |
2738 | s->next = w->next; | |
2739 | if (!NILP (s->next)) | |
2740 | XWINDOW (s->next)->prev = sibling; | |
2741 | } | |
2742 | else | |
2743 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2744 | { | |
2745 | sibling = w->next; | |
2746 | s = XWINDOW (sibling); | |
2747 | s->prev = Qnil; | |
2748 | if (!NILP (XWINDOW (w->parent)->vchild)) | |
2749 | XWINDOW (w->parent)->vchild = sibling; | |
2750 | else | |
2751 | XWINDOW (w->parent)->hchild = sibling; | |
2752 | } | |
2753 | ||
2754 | /* Delete ROOT and all subwindows of ROOT. */ | |
2755 | if (!NILP (r->vchild)) | |
2756 | { | |
2757 | delete_all_subwindows (r->vchild); | |
2758 | r->vchild = Qnil; | |
2759 | } | |
2760 | else if (!NILP (r->hchild)) | |
2761 | { | |
2762 | delete_all_subwindows (r->hchild); | |
2763 | r->hchild = Qnil; | |
2764 | } | |
2765 | ||
2766 | replace_window (root, window, 1); | |
2767 | ||
2768 | /* Reset WINDOW's splits status. */ | |
2769 | w->splits = Qnil; | |
2770 | ||
2771 | /* This must become SWINDOW anyway ....... */ | |
2772 | if (!NILP (w->buffer) && !resize_failed) | |
2773 | { | |
2774 | /* Try to minimize scrolling, by setting the window start to the | |
2775 | point will cause the text at the old window start to be at the | |
2776 | same place on the frame. But don't try to do this if the | |
2777 | window start is outside the visible portion (as might happen | |
2778 | when the display is not current, due to typeahead). */ | |
2779 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2780 | if (new_top != top | |
2781 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
2782 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
2783 | { | |
2784 | struct position pos; | |
2785 | struct buffer *obuf = current_buffer; | |
2786 | ||
2787 | Fset_buffer (w->buffer); | |
2788 | /* This computation used to temporarily move point, but that | |
2789 | can have unwanted side effects due to text properties. */ | |
2790 | pos = *vmotion (startpos, -top, w); | |
2791 | ||
2792 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); | |
2793 | w->window_end_valid = Qnil; | |
2794 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
2795 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
2796 | : Qnil); | |
2797 | /* We need to do this, so that the window-scroll-functions | |
2798 | get called. */ | |
2799 | w->optional_new_start = Qt; | |
2800 | ||
2801 | set_buffer_internal (obuf); | |
2802 | } | |
2803 | } | |
2804 | ||
2805 | adjust_glyphs (f); | |
2806 | UNBLOCK_INPUT; | |
2807 | ||
2808 | run_window_configuration_change_hook (f); | |
2809 | ||
2810 | return Qnil; | |
2811 | } | |
2812 | ||
2813 | ||
9397e56f MR |
2814 | void |
2815 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2816 | { |
9397e56f | 2817 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2818 | } |
2819 | ||
ff58478b | 2820 | |
9397e56f MR |
2821 | /* Safely replace BUFFER with some other buffer in all windows of all |
2822 | frames, even those on other keyboards. */ | |
ff58478b RS |
2823 | |
2824 | void | |
9397e56f | 2825 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b RS |
2826 | { |
2827 | Lisp_Object tail, frame; | |
2828 | ||
9397e56f MR |
2829 | /* A single call to window_loop won't do the job because it only |
2830 | considers frames on the current keyboard. So loop manually over | |
2831 | frames, and handle each one. */ | |
ff58478b | 2832 | FOR_EACH_FRAME (tail, frame) |
9397e56f | 2833 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); |
ff58478b | 2834 | } |
7ab12479 | 2835 | \f |
a481b3ea JB |
2836 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
2837 | minimum allowable size. */ | |
5500c422 | 2838 | |
605be8af | 2839 | void |
971de7fb | 2840 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2841 | { |
628df3bf | 2842 | /* For height, we have to see: |
54b8bcb5 RS |
2843 | how many windows the frame has at minimum (one or two), |
2844 | and whether it has a menu bar or other special stuff at the top. */ | |
2845 | int min_height | |
2846 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2847 | ? MIN_SAFE_WINDOW_HEIGHT | |
2848 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2849 | |
5500c422 GM |
2850 | if (FRAME_TOP_MARGIN (frame) > 0) |
2851 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2852 | |
2853 | if (*rows < min_height) | |
2854 | *rows = min_height; | |
2855 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2856 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2857 | } | |
2858 | ||
79fd290e | 2859 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2860 | Return 1 if window width is ok after adjustment; 0 if window |
2861 | is still too narrow. */ | |
2862 | ||
2863 | static int | |
971de7fb | 2864 | adjust_window_margins (struct window *w) |
949cf20f KS |
2865 | { |
2866 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2867 | - WINDOW_FRINGE_COLS (w) | |
2868 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2869 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2870 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2871 | ||
2872 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2873 | return 1; | |
2874 | ||
2875 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2876 | return 0; | |
2877 | ||
2878 | /* Window's text area is too narrow, but reducing the window | |
2879 | margins will fix that. */ | |
2880 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2881 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2882 | { | |
2883 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2884 | w->left_margin_cols = w->right_margin_cols | |
2885 | = make_number (margin_cols/2); | |
2886 | else | |
2887 | w->right_margin_cols = make_number (margin_cols); | |
2888 | } | |
2889 | else | |
2890 | w->left_margin_cols = make_number (margin_cols); | |
2891 | return 1; | |
2892 | } | |
562dd5e9 | 2893 | \f |
562dd5e9 MR |
2894 | static Lisp_Object Fset_window_margins (Lisp_Object, Lisp_Object, Lisp_Object); |
2895 | static Lisp_Object Fset_window_fringes (Lisp_Object, Lisp_Object, Lisp_Object, | |
2896 | Lisp_Object); | |
2897 | static Lisp_Object Fset_window_scroll_bars (Lisp_Object, Lisp_Object, | |
2898 | Lisp_Object, Lisp_Object); | |
2899 | static Lisp_Object Fset_window_vscroll (Lisp_Object, Lisp_Object, Lisp_Object); | |
6b61353c | 2900 | |
9397e56f MR |
2901 | /* The following three routines are needed for running a window's |
2902 | configuration change hook. */ | |
562dd5e9 MR |
2903 | static void |
2904 | run_funs (Lisp_Object funs) | |
2905 | { | |
2906 | for (; CONSP (funs); funs = XCDR (funs)) | |
2907 | if (!EQ (XCAR (funs), Qt)) | |
2908 | call0 (XCAR (funs)); | |
2909 | } | |
6b61353c | 2910 | |
9397e56f MR |
2911 | static Lisp_Object |
2912 | select_window_norecord (Lisp_Object window) | |
2913 | { | |
2914 | return WINDOW_LIVE_P (window) | |
2915 | ? Fselect_window (window, Qt) : selected_window; | |
2916 | } | |
2917 | ||
2918 | static Lisp_Object | |
2919 | select_frame_norecord (Lisp_Object frame) | |
2920 | { | |
2921 | return FRAME_LIVE_P (XFRAME (frame)) | |
2922 | ? Fselect_frame (frame, Qt) : selected_frame; | |
2923 | } | |
6b61353c | 2924 | |
562dd5e9 MR |
2925 | void |
2926 | run_window_configuration_change_hook (struct frame *f) | |
2927 | { | |
2928 | int count = SPECPDL_INDEX (); | |
2929 | Lisp_Object frame, global_wcch | |
2930 | = Fdefault_value (Qwindow_configuration_change_hook); | |
2931 | XSETFRAME (frame, f); | |
6b61353c | 2932 | |
562dd5e9 MR |
2933 | if (NILP (Vrun_hooks)) |
2934 | return; | |
6b61353c | 2935 | |
562dd5e9 MR |
2936 | /* Use the right buffer. Matters when running the local hooks. */ |
2937 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 2938 | { |
562dd5e9 MR |
2939 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
2940 | Fset_buffer (Fwindow_buffer (Qnil)); | |
2941 | } | |
6a44ffb3 | 2942 | |
1a13852e MR |
2943 | if (SELECTED_FRAME () != f) |
2944 | { | |
2945 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
2946 | select_frame_norecord (frame); | |
2947 | } | |
2948 | ||
6a44ffb3 SM |
2949 | /* Look for buffer-local values. */ |
2950 | { | |
2951 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
2952 | for (; CONSP (windows); windows = XCDR (windows)) | |
2953 | { | |
2954 | Lisp_Object window = XCAR (windows); | |
2955 | Lisp_Object buffer = Fwindow_buffer (window); | |
2956 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
2957 | buffer))) | |
2958 | { | |
46a4ce9e | 2959 | int inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
2960 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
2961 | select_window_norecord (window); | |
2962 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
2963 | buffer)); | |
46a4ce9e | 2964 | unbind_to (inner_count, Qnil); |
fec89261 | 2965 | } |
6a44ffb3 SM |
2966 | } |
2967 | } | |
047aaeb9 | 2968 | |
6a44ffb3 SM |
2969 | run_funs (global_wcch); |
2970 | unbind_to (count, Qnil); | |
ef264c42 SM |
2971 | } |
2972 | ||
1a13852e MR |
2973 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
2974 | Srun_window_configuration_change_hook, 1, 1, 0, | |
2975 | doc: /* Run `window-configuration-change-hook' for FRAME. */) | |
2976 | (Lisp_Object frame) | |
2977 | { | |
2978 | CHECK_LIVE_FRAME (frame); | |
2979 | run_window_configuration_change_hook (XFRAME (frame)); | |
2980 | return Qnil; | |
2981 | } | |
2982 | ||
5500c422 GM |
2983 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2984 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
2985 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
2986 | margins, fringes, and scroll-bar settings of the window are not | |
2987 | reset from the buffer's local settings. */ | |
7ab12479 | 2988 | |
5500c422 | 2989 | void |
971de7fb | 2990 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
2991 | { |
2992 | struct window *w = XWINDOW (window); | |
2993 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 2994 | int count = SPECPDL_INDEX (); |
c3b232e4 | 2995 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
2996 | |
2997 | w->buffer = buffer; | |
86e48436 RS |
2998 | |
2999 | if (EQ (window, selected_window)) | |
4b4deea2 | 3000 | BVAR (b, last_selected_window) = window; |
beb4e312 | 3001 | |
c49a0495 KS |
3002 | /* Let redisplay errors through. */ |
3003 | b->display_error_modiff = 0; | |
3004 | ||
beb4e312 | 3005 | /* Update time stamps of buffer display. */ |
4b4deea2 TT |
3006 | if (INTEGERP (BVAR (b, display_count))) |
3007 | XSETINT (BVAR (b, display_count), XINT (BVAR (b, display_count)) + 1); | |
3008 | BVAR (b, display_time) = Fcurrent_time (); | |
86e48436 | 3009 | |
d834a2e9 | 3010 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 3011 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 3012 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 3013 | w->window_end_valid = Qnil; |
c3b232e4 | 3014 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3015 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3016 | vscroll. This case happens for example when called from |
3017 | change_frame_size_1, where we use a dummy call to | |
3018 | Fset_window_buffer on the frame's selected window (and no other) | |
3019 | just in order to run window-configuration-change-hook. | |
3020 | Resetting hscroll and vscroll here is problematic for things like | |
3021 | image-mode and doc-view-mode since it resets the image's position | |
3022 | whenever we resize the frame. */ | |
3023 | w->hscroll = w->min_hscroll = make_number (0); | |
3024 | w->vscroll = 0; | |
3025 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3026 | set_marker_restricted (w->start, | |
3027 | make_number (b->last_window_start), | |
3028 | buffer); | |
3029 | w->start_at_line_beg = Qnil; | |
3030 | w->force_start = Qnil; | |
3031 | XSETFASTINT (w->last_modified, 0); | |
3032 | XSETFASTINT (w->last_overlay_modified, 0); | |
3033 | } | |
3034 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3035 | I doubt it's worth the trouble. */ | |
7ab12479 | 3036 | windows_or_buffers_changed++; |
5b03d3c0 | 3037 | |
da39107c | 3038 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3039 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3040 | because that might itself be a local variable. */ | |
da39107c | 3041 | if (window_initialized) |
5b03d3c0 | 3042 | { |
da39107c | 3043 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3044 | Fset_buffer (buffer); |
3045 | } | |
3046 | ||
a1562258 SM |
3047 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3048 | ||
949cf20f KS |
3049 | if (!keep_margins_p) |
3050 | { | |
3051 | /* Set left and right marginal area width etc. from buffer. */ | |
3052 | ||
79fd290e | 3053 | /* This may call adjust_window_margins three times, so |
949cf20f | 3054 | temporarily disable window margins. */ |
6b61353c KH |
3055 | Lisp_Object save_left = w->left_margin_cols; |
3056 | Lisp_Object save_right = w->right_margin_cols; | |
3057 | ||
949cf20f KS |
3058 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3059 | ||
3060 | Fset_window_fringes (window, | |
4b4deea2 TT |
3061 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3062 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3063 | |
3064 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3065 | BVAR (b, scroll_bar_width), |
3066 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3067 | |
6b61353c KH |
3068 | w->left_margin_cols = save_left; |
3069 | w->right_margin_cols = save_right; | |
3070 | ||
949cf20f | 3071 | Fset_window_margins (window, |
4b4deea2 | 3072 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3073 | } |
7ab12479 | 3074 | |
5500c422 GM |
3075 | if (run_hooks_p) |
3076 | { | |
3077 | if (! NILP (Vwindow_scroll_functions)) | |
3078 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3079 | Fmarker_position (w->start)); | |
ef264c42 | 3080 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3081 | } |
543f5fb1 | 3082 | |
5b03d3c0 | 3083 | unbind_to (count, Qnil); |
5500c422 | 3084 | } |
5b03d3c0 | 3085 | |
a7ca3326 | 3086 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3087 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
9397e56f MR |
3088 | WINDOW has to be a live window and defaults to the selected one. |
3089 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. | |
3090 | ||
3091 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3092 | display margins, fringe widths, and scroll bar settings are preserved; | |
3093 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3094 | or the frame defaults. Return nil. | |
d653c8cc | 3095 | |
7bfac547 MR |
3096 | This function throws an error when WINDOW is strongly dedicated to its |
3097 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3098 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3099 | |
8fef9de1 MR |
3100 | This function runs `window-scroll-functions' before running |
3101 | `window-configuration-change-hook'. */) | |
5842a27b | 3102 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3103 | { |
d653c8cc | 3104 | register Lisp_Object tem, buffer; |
5500c422 | 3105 | register struct window *w = decode_window (window); |
5500c422 | 3106 | |
bed0c171 | 3107 | XSETWINDOW (window, w); |
d653c8cc | 3108 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3109 | CHECK_BUFFER (buffer); |
4b4deea2 | 3110 | if (NILP (BVAR (XBUFFER (buffer), name))) |
5500c422 GM |
3111 | error ("Attempt to display deleted buffer"); |
3112 | ||
3113 | tem = w->buffer; | |
aac0c6e3 MR |
3114 | if (NILP (tem)) |
3115 | error ("Window is deleted"); | |
3116 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3117 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3118 | { |
9397e56f MR |
3119 | if (!EQ (tem, buffer)) |
3120 | { | |
3121 | if (EQ (w->dedicated, Qt)) | |
3122 | /* WINDOW is strongly dedicated to its buffer, signal an | |
3123 | error. */ | |
3124 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3125 | else | |
3126 | /* WINDOW is weakly dedicated to its buffer, reset | |
3127 | dedicatedness. */ | |
3128 | w->dedicated = Qnil; | |
3129 | ||
3130 | call1 (Qrecord_window_buffer, window); | |
3131 | } | |
5500c422 GM |
3132 | |
3133 | unshow_buffer (w); | |
3134 | } | |
3135 | ||
949cf20f | 3136 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3137 | |
9397e56f | 3138 | return Qnil; |
c6932ecd | 3139 | } |
b7354ddf | 3140 | \f |
7e5cf297 | 3141 | static Lisp_Object |
971de7fb | 3142 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3143 | { |
87478b52 | 3144 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3145 | } |
3146 | ||
6b61353c KH |
3147 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3148 | 0, 1, 0, | |
5a1048a5 | 3149 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3150 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3151 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3152 | displaying that buffer. */) |
5842a27b | 3153 | (Lisp_Object object) |
6b61353c KH |
3154 | { |
3155 | if (NILP (object)) | |
3156 | { | |
3157 | windows_or_buffers_changed++; | |
3158 | update_mode_lines++; | |
3159 | return Qt; | |
3160 | } | |
3161 | ||
3162 | if (WINDOWP (object)) | |
3163 | { | |
3164 | struct window *w = XWINDOW (object); | |
3165 | mark_window_display_accurate (object, 0); | |
3166 | w->update_mode_line = Qt; | |
3167 | if (BUFFERP (w->buffer)) | |
3168 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3169 | ++update_mode_lines; | |
3170 | return Qt; | |
3171 | } | |
0cc1039f | 3172 | |
6b61353c KH |
3173 | if (STRINGP (object)) |
3174 | object = Fget_buffer (object); | |
4b4deea2 | 3175 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
6b61353c KH |
3176 | { |
3177 | /* Walk all windows looking for buffer, and force update | |
3178 | of each of those windows. */ | |
3179 | ||
3180 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3181 | return NILP (object) ? Qnil : Qt; | |
3182 | } | |
3183 | ||
3184 | /* If nothing suitable was found, just return. | |
3185 | We could signal an error, but this feature will typically be used | |
3186 | asynchronously in timers or process sentinels, so we don't. */ | |
3187 | return Qnil; | |
3188 | } | |
3189 | ||
3190 | ||
7ab12479 | 3191 | void |
971de7fb | 3192 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3193 | { |
3194 | register struct buffer *old = current_buffer; | |
3195 | register Lisp_Object window; | |
3196 | register struct window *w; | |
3197 | ||
4b4deea2 | 3198 | BVAR (XBUFFER (buf), directory) = BVAR (current_buffer, directory); |
bccd3dd1 | 3199 | |
7ab12479 | 3200 | Fset_buffer (buf); |
c6367666 | 3201 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3202 | BEGV = BEG; |
3203 | ZV = Z; | |
3204 | SET_PT (BEG); | |
7ab12479 JB |
3205 | set_buffer_internal (old); |
3206 | ||
e67a1dea | 3207 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3208 | call1 (Vtemp_buffer_show_function, buf); |
3209 | else | |
3210 | { | |
e10ac9f1 MR |
3211 | window = display_buffer (buf, Vtemp_buffer_show_specifiers, Qnil); |
3212 | /* Reset Vtemp_buffer_show_specifiers immediately so it won't | |
3213 | affect subsequent calls. */ | |
3214 | Vtemp_buffer_show_specifiers = Qnil; | |
7ab12479 | 3215 | |
1ae1a37d | 3216 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3217 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3218 | Vminibuf_scroll_window = window; |
3219 | w = XWINDOW (window); | |
d834a2e9 | 3220 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3221 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3222 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3223 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3224 | |
beb4e312 | 3225 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3226 | and its buffer current. */ |
dee091a3 JD |
3227 | { |
3228 | int count = SPECPDL_INDEX (); | |
3229 | Lisp_Object prev_window, prev_buffer; | |
3230 | prev_window = selected_window; | |
3231 | XSETBUFFER (prev_buffer, old); | |
3232 | ||
3233 | /* Select the window that was chosen, for running the hook. | |
3234 | Note: Both Fselect_window and select_window_norecord may | |
3235 | set-buffer to the buffer displayed in the window, | |
3236 | so we need to save the current buffer. --stef */ | |
3237 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3238 | record_unwind_protect (select_window_norecord, prev_window); | |
3239 | Fselect_window (window, Qt); | |
3240 | Fset_buffer (w->buffer); | |
3241 | Frun_hooks (1, &Qtemp_buffer_show_hook); | |
3242 | unbind_to (count, Qnil); | |
3243 | } | |
2cccc823 | 3244 | } |
7ab12479 | 3245 | } |
3e21b6a7 SM |
3246 | |
3247 | DEFUN ("internal-temp-output-buffer-show", | |
3248 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
3249 | 1, 1, 0, | |
3250 | doc: /* Internal function for `with-output-to-temp-buffer''. */) | |
3251 | (Lisp_Object buf) | |
3252 | { | |
3253 | temp_output_buffer_show (buf); | |
3254 | return Qnil; | |
3255 | } | |
7ab12479 | 3256 | \f |
1a13852e MR |
3257 | /* Make new window, have it replace WINDOW in window-tree, and make |
3258 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3259 | horizontal child). */ | |
3260 | static void | |
3261 | make_parent_window (Lisp_Object window, int horflag) | |
3262 | { | |
3263 | Lisp_Object parent; | |
3264 | register struct window *o, *p; | |
3265 | int i; | |
3266 | ||
3267 | o = XWINDOW (window); | |
3268 | p = allocate_window (); | |
3269 | for (i = 0; i < VECSIZE (struct window); ++i) | |
3270 | ((struct Lisp_Vector *) p)->contents[i] | |
3271 | = ((struct Lisp_Vector *) o)->contents[i]; | |
3272 | XSETWINDOW (parent, p); | |
3273 | ||
3274 | ++sequence_number; | |
3275 | XSETFASTINT (p->sequence_number, sequence_number); | |
1a13852e MR |
3276 | |
3277 | replace_window (window, parent, 1); | |
3278 | ||
3279 | o->next = Qnil; | |
3280 | o->prev = Qnil; | |
3281 | o->parent = parent; | |
3282 | ||
3283 | p->hchild = horflag ? window : Qnil; | |
3284 | p->vchild = horflag ? Qnil : window; | |
3285 | p->start = Qnil; | |
3286 | p->pointm = Qnil; | |
3287 | p->buffer = Qnil; | |
3288 | p->splits = Qnil; | |
3289 | p->nest = Qnil; | |
3290 | p->window_parameters = Qnil; | |
3291 | } | |
3292 | ||
496e208e MR |
3293 | /* Make new window from scratch. */ |
3294 | Lisp_Object | |
3295 | make_window (void) | |
3296 | { | |
3297 | Lisp_Object window; | |
3298 | register struct window *w; | |
3299 | ||
3300 | w = allocate_window (); | |
3301 | /* Initialize all Lisp data. */ | |
3302 | w->frame = w->mini_p = Qnil; | |
3303 | w->next = w->prev = w->hchild = w->vchild = w->parent = Qnil; | |
3304 | XSETFASTINT (w->left_col, 0); | |
3305 | XSETFASTINT (w->top_line, 0); | |
3306 | XSETFASTINT (w->total_lines, 0); | |
3307 | XSETFASTINT (w->total_cols, 0); | |
3308 | w->normal_lines = make_float (1.0); | |
3309 | w->normal_cols = make_float (1.0); | |
3310 | XSETFASTINT (w->new_total, 0); | |
3311 | XSETFASTINT (w->new_normal, 0); | |
3312 | w->buffer = Qnil; | |
3313 | w->start = Fmake_marker (); | |
3314 | w->pointm = Fmake_marker (); | |
3315 | w->force_start = w->optional_new_start = Qnil; | |
3316 | XSETFASTINT (w->hscroll, 0); | |
3317 | XSETFASTINT (w->min_hscroll, 0); | |
3318 | XSETFASTINT (w->use_time, 0); | |
3319 | ++sequence_number; | |
3320 | XSETFASTINT (w->sequence_number, sequence_number); | |
496e208e MR |
3321 | w->temslot = w->last_modified = w->last_overlay_modified = Qnil; |
3322 | XSETFASTINT (w->last_point, 0); | |
3323 | w->last_had_star = w->vertical_scroll_bar = Qnil; | |
3324 | w->left_margin_cols = w->right_margin_cols = Qnil; | |
3325 | w->left_fringe_width = w->right_fringe_width = Qnil; | |
3326 | w->fringes_outside_margins = Qnil; | |
3327 | w->scroll_bar_width = Qnil; | |
3328 | w->vertical_scroll_bar_type = Qt; | |
3329 | w->last_mark_x = w->last_mark_y = Qnil; | |
3330 | XSETFASTINT (w->window_end_pos, 0); | |
3331 | XSETFASTINT (w->window_end_vpos, 0); | |
3332 | w->window_end_valid = w->update_mode_line = Qnil; | |
3333 | w->start_at_line_beg = w->display_table = w->dedicated = Qnil; | |
3334 | w->base_line_number = w->base_line_pos = w->region_showing = Qnil; | |
3335 | w->column_number_displayed = w->redisplay_end_trigger = Qnil; | |
3336 | w->splits = w->nest = w->window_parameters = Qnil; | |
3337 | w->prev_buffers = w->next_buffers = Qnil; | |
3338 | /* Initialize non-Lisp data. */ | |
3339 | w->desired_matrix = w->current_matrix = 0; | |
3340 | w->nrows_scale_factor = w->ncols_scale_factor = 1; | |
3341 | memset (&w->cursor, 0, sizeof (w->cursor)); | |
3342 | memset (&w->last_cursor, 0, sizeof (w->last_cursor)); | |
3343 | memset (&w->phys_cursor, 0, sizeof (w->phys_cursor)); | |
3344 | w->phys_cursor_type = -1; | |
3345 | w->phys_cursor_width = -1; | |
3346 | w->last_cursor_off_p = w->cursor_off_p = 0; | |
3347 | w->must_be_updated_p = 0; | |
3348 | w->pseudo_window_p = 0; | |
3349 | w->frozen_window_start_p = 0; | |
3350 | w->vscroll = 0; | |
496e208e MR |
3351 | /* Reset window_list. */ |
3352 | Vwindow_list = Qnil; | |
3353 | /* Return window. */ | |
3354 | XSETWINDOW (window, w); | |
3355 | return window; | |
3356 | } | |
3357 | \f | |
3358 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3359 | doc: /* Set new total size of WINDOW to SIZE. | |
3360 | Return SIZE. | |
3361 | ||
3362 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3363 | WINDOW and return the sum. | |
3364 | ||
3365 | Note: This function does not operate on any subwindows of WINDOW. */) | |
3366 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) | |
3367 | { | |
3368 | struct window *w = decode_any_window (window); | |
3369 | ||
3370 | CHECK_NUMBER (size); | |
3371 | if (NILP (add)) | |
3372 | XSETINT (w->new_total, XINT (size)); | |
3373 | else | |
3374 | XSETINT (w->new_total, XINT (w->new_total) + XINT (size)); | |
3375 | ||
3376 | return w->new_total; | |
3377 | } | |
3378 | ||
3379 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3380 | doc: /* Set new normal size of WINDOW to SIZE. | |
3381 | Return SIZE. | |
3382 | ||
3383 | Note: This function does not operate on any subwindows of WINDOW. */) | |
3384 | (Lisp_Object window, Lisp_Object size) | |
3385 | { | |
3386 | struct window *w = decode_any_window (window); | |
3387 | ||
3388 | w->new_normal = size; | |
3389 | return w->new_normal; | |
7ab12479 JB |
3390 | } |
3391 | ||
1a13852e MR |
3392 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3393 | non-zero) to w->new_total would result in correct heights (widths) | |
3394 | for window W and recursively all subwindows of W. | |
3395 | ||
3396 | Note: This function does not check any of `window-fixed-size-p', | |
3397 | `window-min-height' or `window-min-width'. It does check that window | |
3398 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3399 | static int |
d615d6d2 | 3400 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3401 | { |
3402 | struct window *c; | |
3403 | ||
3404 | if (!NILP (w->vchild)) | |
3405 | /* W is a vertical combination. */ | |
3406 | { | |
3407 | c = XWINDOW (w->vchild); | |
3408 | if (horflag) | |
3409 | /* All subwindows of W must have the same width as W. */ | |
3410 | { | |
3411 | while (c) | |
3412 | { | |
3413 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
d615d6d2 | 3414 | || !window_resize_check (c, horflag)) |
1a13852e MR |
3415 | return 0; |
3416 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3417 | } | |
3418 | return 1; | |
3419 | } | |
3420 | else | |
3421 | /* The sum of the heights of the subwindows of W must equal W's | |
3422 | height. */ | |
3423 | { | |
3424 | int sum_of_sizes = 0; | |
3425 | while (c) | |
3426 | { | |
d615d6d2 | 3427 | if (!window_resize_check (c, horflag)) |
1a13852e MR |
3428 | return 0; |
3429 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
3430 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3431 | } | |
3432 | return (sum_of_sizes == XINT (w->new_total)); | |
3433 | } | |
3434 | } | |
3435 | else if (!NILP (w->hchild)) | |
3436 | /* W is a horizontal combination. */ | |
3437 | { | |
3438 | c = XWINDOW (w->hchild); | |
3439 | if (horflag) | |
3440 | /* The sum of the widths of the subwindows of W must equal W's | |
3441 | width. */ | |
3442 | { | |
3443 | int sum_of_sizes = 0; | |
3444 | while (c) | |
3445 | { | |
d615d6d2 | 3446 | if (!window_resize_check (c, horflag)) |
1a13852e MR |
3447 | return 0; |
3448 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
3449 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3450 | } | |
3451 | return (sum_of_sizes == XINT (w->new_total)); | |
3452 | } | |
3453 | else | |
3454 | /* All subwindows of W must have the same height as W. */ | |
3455 | { | |
3456 | while (c) | |
3457 | { | |
3458 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
d615d6d2 | 3459 | || !window_resize_check (c, horflag)) |
1a13852e MR |
3460 | return 0; |
3461 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3462 | } | |
3463 | return 1; | |
3464 | } | |
3465 | } | |
3466 | else | |
3467 | /* A leaf window. Make sure it's not too small. The following | |
3468 | hardcodes the values of `window-safe-min-width' (2) and | |
3469 | `window-safe-min-height' (1) which are defined in window.el. */ | |
3470 | return XINT (w->new_total) >= (horflag ? 2 : 1); | |
3471 | } | |
3472 | ||
3473 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
3474 | w->new_total for window W and recursively all subwindows of W. Also | |
3475 | calculate and assign the new vertical (horizontal) start positions of | |
3476 | each of these windows. | |
3477 | ||
3478 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3479 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3480 | static void |
d615d6d2 | 3481 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3482 | { |
46a4ce9e | 3483 | struct window *c; |
1a13852e MR |
3484 | int pos; |
3485 | ||
3486 | /* Note: Assigning new_normal requires that the new total size of the | |
3487 | parent window has been set *before*. */ | |
3488 | if (horflag) | |
3489 | { | |
3490 | w->total_cols = w->new_total; | |
3491 | if (NUMBERP (w->new_normal)) | |
3492 | w->normal_cols = w->new_normal; | |
3493 | ||
3494 | pos = XINT (w->left_col); | |
3495 | } | |
3496 | else | |
3497 | { | |
3498 | w->total_lines = w->new_total; | |
3499 | if (NUMBERP (w->new_normal)) | |
3500 | w->normal_lines = w->new_normal; | |
3501 | ||
3502 | pos = XINT (w->top_line); | |
3503 | } | |
3504 | ||
3505 | if (!NILP (w->vchild)) | |
3506 | /* W is a vertical combination. */ | |
3507 | { | |
3508 | c = XWINDOW (w->vchild); | |
3509 | while (c) | |
3510 | { | |
3511 | if (horflag) | |
3512 | XSETFASTINT (c->left_col, pos); | |
3513 | else | |
3514 | XSETFASTINT (c->top_line, pos); | |
d615d6d2 | 3515 | window_resize_apply (c, horflag); |
1a13852e MR |
3516 | if (!horflag) |
3517 | pos = pos + XINT (c->total_lines); | |
3518 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3519 | } | |
3520 | } | |
3521 | else if (!NILP (w->hchild)) | |
3522 | /* W is a horizontal combination. */ | |
3523 | { | |
3524 | c = XWINDOW (w->hchild); | |
3525 | while (c) | |
3526 | { | |
3527 | if (horflag) | |
3528 | XSETFASTINT (c->left_col, pos); | |
3529 | else | |
3530 | XSETFASTINT (c->top_line, pos); | |
d615d6d2 | 3531 | window_resize_apply (c, horflag); |
1a13852e MR |
3532 | if (horflag) |
3533 | pos = pos + XINT (c->total_cols); | |
3534 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3535 | } | |
3536 | } | |
3537 | ||
3538 | /* Clear out some redisplay caches. */ | |
3539 | XSETFASTINT (w->last_modified, 0); | |
3540 | XSETFASTINT (w->last_overlay_modified, 0); | |
3541 | } | |
3542 | ||
3543 | ||
d615d6d2 | 3544 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 1, 2, 0, |
1a13852e MR |
3545 | doc: /* Apply requested size values for window-tree of FRAME. |
3546 | Optional argument HORIZONTAL omitted or nil means apply requested height | |
3547 | values. HORIZONTAL non-nil means apply requested width values. | |
3548 | ||
3549 | This function checks whether the requested values sum up to a valid | |
3550 | window layout, recursively assigns the new sizes of all subwindows and | |
3551 | calculates and assigns the new start positions of these windows. | |
3552 | ||
3553 | Note: This function does not check any of `window-fixed-size-p', | |
3554 | `window-min-height' or `window-min-width'. All these checks have to | |
3555 | be applied on the Elisp level. */) | |
3556 | (Lisp_Object frame, Lisp_Object horizontal) | |
3557 | { | |
3558 | struct frame *f; | |
3559 | struct window *r; | |
3560 | int horflag = !NILP (horizontal); | |
3561 | ||
3562 | if (NILP (frame)) | |
3563 | frame = selected_frame; | |
3564 | CHECK_LIVE_FRAME (frame); | |
3565 | ||
3566 | f = XFRAME (frame); | |
3567 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3568 | ||
d615d6d2 | 3569 | if (!window_resize_check (r, horflag) |
1a13852e MR |
3570 | || ! EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
3571 | return Qnil; | |
3572 | ||
3573 | BLOCK_INPUT; | |
d615d6d2 | 3574 | window_resize_apply (r, horflag); |
1a13852e MR |
3575 | |
3576 | windows_or_buffers_changed++; | |
3577 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3578 | ||
3579 | adjust_glyphs (f); | |
3580 | UNBLOCK_INPUT; | |
3581 | ||
3582 | run_window_configuration_change_hook (f); | |
3583 | ||
3584 | return Qt; | |
3585 | } | |
3586 | ||
3587 | ||
3588 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3589 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3590 | SIZE. | |
3591 | ||
3592 | This function can delete all windows but the selected one in order to | |
3593 | satisfy the request. The result will be meaningful if and only if | |
3594 | F's windows have meaningful sizes when you call this. */ | |
3595 | void | |
3596 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3597 | { | |
3598 | Lisp_Object root = f->root_window; | |
3599 | struct window *r = XWINDOW (root); | |
3600 | Lisp_Object mini = f->minibuffer_window; | |
3601 | struct window *m; | |
3602 | /* new_size is the new size of the frame's root window. */ | |
3603 | int new_size = (horflag | |
3604 | ? size | |
3605 | : (size | |
3606 | - FRAME_TOP_MARGIN (f) | |
3607 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3608 | ? 1 : 0))); | |
3609 | ||
3610 | XSETFASTINT (r->top_line, FRAME_TOP_MARGIN (f)); | |
3611 | if (NILP (r->vchild) && NILP (r->hchild)) | |
3612 | /* For a leaf root window just set the size. */ | |
3613 | if (horflag) | |
3614 | XSETFASTINT (r->total_cols, new_size); | |
3615 | else | |
3616 | XSETFASTINT (r->total_lines, new_size); | |
3617 | else | |
3618 | { | |
3619 | /* old_size is the old size of the frame's root window. */ | |
3620 | int old_size = XFASTINT (horflag ? r->total_cols : r->total_lines); | |
3621 | Lisp_Object delta; | |
3622 | ||
3623 | XSETINT (delta, new_size - old_size); | |
3624 | /* Try a "normal" resize first. */ | |
3625 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
d615d6d2 MR |
3626 | if (window_resize_check (r, horflag) && new_size == XINT (r->new_total)) |
3627 | window_resize_apply (r, horflag); | |
1a13852e MR |
3628 | else |
3629 | { | |
3630 | /* Try with "reasonable" minimum sizes next. */ | |
3631 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3632 | if (window_resize_check (r, horflag) |
1a13852e | 3633 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3634 | window_resize_apply (r, horflag); |
1a13852e MR |
3635 | else |
3636 | { | |
3637 | /* Finally, try with "safe" minimum sizes. */ | |
3638 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3639 | if (window_resize_check (r, horflag) |
1a13852e | 3640 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3641 | window_resize_apply (r, horflag); |
1a13852e MR |
3642 | else |
3643 | { | |
3644 | /* We lost. Delete all windows but the frame's | |
3645 | selected one. */ | |
3646 | root = f->selected_window; | |
3647 | Fdelete_other_windows_internal (root, Qnil); | |
3648 | if (horflag) | |
3649 | XSETFASTINT (XWINDOW (root)->total_cols, new_size); | |
3650 | else | |
3651 | XSETFASTINT (XWINDOW (root)->total_lines, new_size); | |
3652 | } | |
3653 | } | |
3654 | } | |
3655 | } | |
3656 | ||
3657 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3658 | { | |
3659 | m = XWINDOW (mini); | |
3660 | if (horflag) | |
3661 | XSETFASTINT (m->total_cols, size); | |
3662 | else | |
3663 | { | |
3664 | /* Are we sure we always want 1 line here? */ | |
3665 | XSETFASTINT (m->total_lines, 1); | |
3666 | XSETFASTINT (m->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
3667 | } | |
3668 | } | |
3669 | } | |
3670 | ||
3671 | ||
3672 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3673 | doc: /* Split window OLD. | |
3674 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3675 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3676 | |
3677 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3678 | be located below WINDOW. SIDE `above' means the new window shall be | |
3679 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3680 | lines of the new window including space reserved for the mode and/or | |
3681 | header line. | |
3682 | ||
3683 | SIDE t (or `right') specifies that the new window shall be located on | |
3684 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3685 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3686 | number of columns of the new window including space reserved for fringes | |
3687 | and the scrollbar or a divider column. | |
3688 | ||
3689 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3690 | according to the SIDE argument. | |
3691 | ||
3692 | The new total and normal sizes of all involved windows must have been | |
3693 | set correctly. See the code of `split-window' for how this is done. */) | |
3694 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3695 | { | |
3696 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3697 | parent window or an internal window we have to install as OLD's new | |
3698 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3699 | provided OLD is a leaf window, or to the frame's selected window. | |
3700 | NEW (*n) is the new window created with some parameters taken from | |
3701 | REFERENCE (*r). */ | |
3702 | register Lisp_Object new, frame, reference; | |
3703 | register struct window *o, *p, *n, *r; | |
3704 | struct frame *f; | |
3705 | int horflag | |
3706 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3707 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
3708 | int do_nest = 0; | |
3709 | ||
3710 | CHECK_WINDOW (old); | |
3711 | o = XWINDOW (old); | |
3712 | frame = WINDOW_FRAME (o); | |
3713 | f = XFRAME (frame); | |
3714 | ||
3715 | CHECK_NUMBER (total_size); | |
3716 | ||
3717 | /* Set do_nest to 1 if we have to make a new parent window. We do | |
3718 | that if either `window-nest' is non-nil, or OLD has no parent, or | |
3719 | OLD is ortho-combined. */ | |
3720 | do_nest = | |
3721 | !NILP (Vwindow_nest) | |
3722 | || NILP (o->parent) | |
3723 | || NILP (horflag | |
3724 | ? (XWINDOW (o->parent)->hchild) | |
3725 | : (XWINDOW (o->parent)->vchild)); | |
3726 | ||
3727 | /* We need a live reference window to initialize some parameters. */ | |
3728 | if (WINDOW_LIVE_P (old)) | |
3729 | /* OLD is live, use it as reference window. */ | |
3730 | reference = old; | |
3731 | else | |
3732 | /* Use the frame's selected window as reference window. */ | |
3733 | reference = FRAME_SELECTED_WINDOW (f); | |
3734 | r = XWINDOW (reference); | |
3735 | ||
3736 | /* The following bugs are caught by `split-window'. */ | |
3737 | if (MINI_WINDOW_P (o)) | |
3738 | error ("Attempt to split minibuffer window"); | |
3739 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3740 | error ("Size of new window too small (after split)"); | |
3741 | else if (!do_nest && !NILP (Vwindow_splits)) | |
3742 | /* `window-splits' non-nil means try to resize OLD's siblings | |
3743 | proportionally. */ | |
3744 | { | |
3745 | p = XWINDOW (o->parent); | |
3746 | /* Temporarily pretend we split the parent window. */ | |
3747 | XSETINT (p->new_total, | |
3748 | XINT (horflag ? p->total_cols : p->total_lines) | |
3749 | - XINT (total_size)); | |
d615d6d2 | 3750 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3751 | error ("Window sizes don't fit"); |
3752 | else | |
3753 | /* Undo the temporary pretension. */ | |
3754 | p->new_total = horflag ? p->total_cols : p->total_lines; | |
3755 | } | |
3756 | else | |
3757 | { | |
d615d6d2 | 3758 | if (!window_resize_check (o, horflag)) |
1a13852e MR |
3759 | error ("Resizing old window failed"); |
3760 | else if (XINT (total_size) + XINT (o->new_total) | |
3761 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
3762 | error ("Sum of sizes of old and new window don't fit"); | |
3763 | } | |
3764 | ||
3765 | /* This is our point of no return. */ | |
3766 | if (do_nest) | |
3767 | { | |
3768 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3769 | by make_parent_window and we need it below for assigning it to | |
3770 | p->new_normal. */ | |
3771 | Lisp_Object new_normal = horflag ? o->normal_cols : o->normal_lines; | |
3772 | ||
3773 | make_parent_window (old, horflag); | |
3774 | p = XWINDOW (o->parent); | |
3775 | /* Store value of `window-nest' in new parent's nest slot. */ | |
3776 | p->nest = Vwindow_nest; | |
3777 | /* Have PARENT inherit splits slot value from OLD. */ | |
3778 | p->splits = o->splits; | |
3779 | /* Store value of `window-splits' in OLD's splits slot. */ | |
3780 | o->splits = Vwindow_splits; | |
3781 | /* These get applied below. */ | |
3782 | p->new_total = horflag ? o->total_cols : o->total_lines; | |
3783 | p->new_normal = new_normal; | |
3784 | } | |
3785 | else | |
3786 | p = XWINDOW (o->parent); | |
3787 | ||
3788 | windows_or_buffers_changed++; | |
3789 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3790 | new = make_window (); | |
3791 | n = XWINDOW (new); | |
3792 | n->frame = frame; | |
3793 | n->parent = o->parent; | |
3794 | n->vchild = n->hchild = Qnil; | |
3795 | ||
3796 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3797 | { | |
3798 | n->prev = o->prev; | |
3799 | if (NILP (n->prev)) | |
3800 | if (horflag) | |
3801 | p->hchild = new; | |
3802 | else | |
3803 | p->vchild = new; | |
3804 | else | |
3805 | XWINDOW (n->prev)->next = new; | |
3806 | n->next = old; | |
3807 | o->prev = new; | |
3808 | } | |
3809 | else | |
3810 | { | |
3811 | n->next = o->next; | |
3812 | if (!NILP (n->next)) | |
3813 | XWINDOW (n->next)->prev = new; | |
3814 | n->prev = old; | |
3815 | o->next = new; | |
3816 | } | |
3817 | ||
3818 | n->buffer = Qt; | |
3819 | n->window_end_valid = Qnil; | |
3820 | memset (&n->last_cursor, 0, sizeof n->last_cursor); | |
3821 | ||
3822 | /* Get special geometry settings from reference window. */ | |
3823 | n->left_margin_cols = r->left_margin_cols; | |
3824 | n->right_margin_cols = r->right_margin_cols; | |
3825 | n->left_fringe_width = r->left_fringe_width; | |
3826 | n->right_fringe_width = r->right_fringe_width; | |
3827 | n->fringes_outside_margins = r->fringes_outside_margins; | |
3828 | n->scroll_bar_width = r->scroll_bar_width; | |
3829 | n->vertical_scroll_bar_type = r->vertical_scroll_bar_type; | |
3830 | ||
3831 | /* Store `window-splits' in NEW's splits slot. */ | |
3832 | n->splits = Vwindow_splits; | |
3833 | ||
3834 | /* Directly assign orthogonal coordinates and sizes. */ | |
3835 | if (horflag) | |
3836 | { | |
3837 | n->top_line = o->top_line; | |
3838 | n->total_lines = o->total_lines; | |
3839 | } | |
3840 | else | |
3841 | { | |
3842 | n->left_col = o->left_col; | |
3843 | n->total_cols = o->total_cols; | |
3844 | } | |
3845 | ||
d615d6d2 | 3846 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e MR |
3847 | get them ready here. */ |
3848 | n->new_total = total_size; | |
3849 | n->new_normal = normal_size; | |
3850 | ||
3851 | BLOCK_INPUT; | |
d615d6d2 | 3852 | window_resize_apply (p, horflag); |
1a13852e MR |
3853 | adjust_glyphs (f); |
3854 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3855 | any hooks. */ | |
3856 | set_window_buffer (new, r->buffer, 0, 1); | |
3857 | UNBLOCK_INPUT; | |
3858 | ||
3859 | /* Maybe we should run the scroll functions in Elisp (which already | |
3860 | runs the configuration change hook). */ | |
3861 | if (! NILP (Vwindow_scroll_functions)) | |
3862 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
3863 | Fmarker_position (n->start)); | |
3864 | /* Return NEW. */ | |
3865 | return new; | |
3866 | } | |
3867 | ||
3868 | ||
3869 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3870 | doc: /* Remove WINDOW from its frame. | |
3871 | WINDOW defaults to the selected window. Return nil. Signal an error | |
3872 | when WINDOW is the only window on its frame. */) | |
3873 | (register Lisp_Object window) | |
3874 | { | |
3875 | register Lisp_Object parent, sibling, frame, root; | |
3876 | struct window *w, *p, *s, *r; | |
3877 | struct frame *f; | |
3878 | int horflag; | |
3879 | int before_sibling = 0; | |
3880 | ||
3881 | w = decode_any_window (window); | |
3882 | XSETWINDOW (window, w); | |
3883 | if (NILP (w->buffer) && NILP (w->hchild) && NILP (w->vchild)) | |
3884 | /* It's a no-op to delete an already deleted window. */ | |
3885 | return Qnil; | |
3886 | ||
3887 | parent = w->parent; | |
3888 | if (NILP (parent)) | |
3889 | /* Never delete a minibuffer or frame root window. */ | |
3890 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
3891 | else if (NILP (w->prev) && NILP (w->next)) | |
3892 | /* Rather bow out here, this case should be handled on the Elisp | |
3893 | level. */ | |
3894 | error ("Attempt to delete sole window of parent"); | |
3895 | ||
3896 | p = XWINDOW (parent); | |
3897 | horflag = NILP (p->vchild); | |
3898 | ||
3899 | frame = WINDOW_FRAME (w); | |
3900 | f = XFRAME (frame); | |
3901 | ||
3902 | root = FRAME_ROOT_WINDOW (f); | |
3903 | r = XWINDOW (root); | |
3904 | ||
3905 | /* Unlink WINDOW from window tree. */ | |
3906 | if (NILP (w->prev)) | |
3907 | /* Get SIBLING below (on the right of) WINDOW. */ | |
3908 | { | |
3909 | /* before_sibling 1 means WINDOW is the first child of its | |
3910 | parent and thus before the sibling. */ | |
3911 | before_sibling = 1; | |
3912 | sibling = w->next; | |
3913 | s = XWINDOW (sibling); | |
3914 | s->prev = Qnil; | |
3915 | if (horflag) | |
3916 | p->hchild = sibling; | |
3917 | else | |
3918 | p->vchild = sibling; | |
3919 | } | |
3920 | else | |
3921 | /* Get SIBLING above (on the left of) WINDOW. */ | |
3922 | { | |
3923 | sibling = w->prev; | |
3924 | s = XWINDOW (sibling); | |
3925 | s->next = w->next; | |
562dd5e9 MR |
3926 | if (!NILP (s->next)) |
3927 | XWINDOW (s->next)->prev = sibling; | |
7ab12479 JB |
3928 | } |
3929 | ||
d615d6d2 | 3930 | if (window_resize_check (r, horflag) |
562dd5e9 MR |
3931 | && EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
3932 | /* We can delete WINDOW now. */ | |
3933 | { | |
3934 | /* Block input. */ | |
3935 | BLOCK_INPUT; | |
d615d6d2 | 3936 | window_resize_apply (p, horflag); |
0d384044 | 3937 | |
562dd5e9 MR |
3938 | windows_or_buffers_changed++; |
3939 | Vwindow_list = Qnil; | |
3940 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 3941 | |
562dd5e9 MR |
3942 | w->next = Qnil; /* Don't delete w->next too. */ |
3943 | free_window_matrices (w); | |
bd99e242 | 3944 | |
562dd5e9 | 3945 | if (!NILP (w->vchild)) |
0d384044 | 3946 | { |
562dd5e9 MR |
3947 | delete_all_subwindows (w->vchild); |
3948 | w->vchild = Qnil; | |
0d384044 | 3949 | } |
562dd5e9 | 3950 | else if (!NILP (w->hchild)) |
bd99e242 | 3951 | { |
562dd5e9 MR |
3952 | delete_all_subwindows (w->hchild); |
3953 | w->hchild = Qnil; | |
bd99e242 | 3954 | } |
562dd5e9 | 3955 | else if (!NILP (w->buffer)) |
bd99e242 | 3956 | { |
562dd5e9 MR |
3957 | unshow_buffer (w); |
3958 | unchain_marker (XMARKER (w->pointm)); | |
3959 | unchain_marker (XMARKER (w->start)); | |
3960 | w->buffer = Qnil; | |
bd99e242 RS |
3961 | } |
3962 | ||
562dd5e9 MR |
3963 | if (NILP (s->prev) && NILP (s->next)) |
3964 | /* A matrjoshka where SIBLING has become the only child of | |
3965 | PARENT. */ | |
c32de52a | 3966 | { |
562dd5e9 MR |
3967 | /* Put SIBLING into PARENT's place. */ |
3968 | replace_window (parent, sibling, 0); | |
3969 | /* Have SIBLING inherit the following three slot values from | |
3970 | PARENT (the nest slot is not inherited). */ | |
3971 | s->normal_cols = p->normal_cols; | |
3972 | s->normal_lines = p->normal_lines; | |
3973 | s->splits = p->splits; | |
3974 | /* Mark PARENT as deleted. */ | |
3975 | p->vchild = p->hchild = Qnil; | |
3976 | /* Try to merge SIBLING into its new parent. */ | |
3977 | recombine_windows (sibling); | |
c32de52a RS |
3978 | } |
3979 | ||
562dd5e9 MR |
3980 | adjust_glyphs (f); |
3981 | ||
3982 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
3983 | /* We deleted the frame's selected window. */ | |
0d384044 | 3984 | { |
562dd5e9 MR |
3985 | /* Use the frame's first window as fallback ... */ |
3986 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
3987 | /* ... but preferably use its most recently used window. */ | |
3988 | Lisp_Object mru_window; | |
0d384044 | 3989 | |
562dd5e9 MR |
3990 | /* `get-mru-window' might fail for some reason so play it safe |
3991 | - promote the first window _without recording it_ first. */ | |
3992 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
3993 | Fselect_window (new_selected_window, Qt); | |
3994 | else | |
3995 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
0d384044 | 3996 | |
562dd5e9 | 3997 | UNBLOCK_INPUT; |
0d384044 | 3998 | |
562dd5e9 MR |
3999 | /* Now look whether `get-mru-window' gets us something. */ |
4000 | mru_window = call1 (Qget_mru_window, frame); | |
4001 | if (WINDOW_LIVE_P (mru_window) | |
4002 | && EQ (XWINDOW (mru_window)->frame, frame)) | |
4003 | new_selected_window = mru_window; | |
bd99e242 | 4004 | |
562dd5e9 MR |
4005 | /* If all ended up well, we now promote the mru window. */ |
4006 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4007 | Fselect_window (new_selected_window, Qnil); | |
4008 | else | |
4009 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
0d384044 RS |
4010 | } |
4011 | else | |
562dd5e9 | 4012 | UNBLOCK_INPUT; |
0d384044 | 4013 | |
562dd5e9 MR |
4014 | /* Must be run by the caller: |
4015 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4016 | } |
562dd5e9 MR |
4017 | else |
4018 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4019 | { |
562dd5e9 MR |
4020 | if (before_sibling) |
4021 | { | |
4022 | s->prev = window; | |
4023 | if (horflag) | |
4024 | p->hchild = window; | |
4025 | else | |
4026 | p->vchild = window; | |
4027 | } | |
4028 | else | |
4029 | { | |
4030 | s->next = window; | |
4031 | if (!NILP (w->next)) | |
4032 | XWINDOW (w->next)->prev = window; | |
4033 | } | |
4034 | error ("Deletion failed"); | |
0d384044 RS |
4035 | } |
4036 | ||
0d384044 RS |
4037 | return Qnil; |
4038 | } | |
f984d4fc GM |
4039 | \f |
4040 | /*********************************************************************** | |
4041 | Resizing Mini-Windows | |
4042 | ***********************************************************************/ | |
4043 | ||
562dd5e9 MR |
4044 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4045 | can. */ | |
4046 | void | |
4047 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4048 | { |
562dd5e9 MR |
4049 | struct frame *f = XFRAME (w->frame); |
4050 | struct window *r; | |
4051 | Lisp_Object root, value; | |
f984d4fc | 4052 | |
562dd5e9 MR |
4053 | xassert (MINI_WINDOW_P (w)); |
4054 | xassert (delta >= 0); | |
f984d4fc | 4055 | |
562dd5e9 MR |
4056 | root = FRAME_ROOT_WINDOW (f); |
4057 | r = XWINDOW (root); | |
5386012d MR |
4058 | value = call2 (Qwindow_resize_root_window_vertically, |
4059 | root, make_number (- delta)); | |
d615d6d2 | 4060 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4061 | { |
562dd5e9 | 4062 | BLOCK_INPUT; |
d615d6d2 | 4063 | window_resize_apply (r, 0); |
f984d4fc | 4064 | |
562dd5e9 MR |
4065 | /* Grow the mini-window. */ |
4066 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); | |
4067 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - XINT (value)); | |
4068 | XSETFASTINT (w->last_modified, 0); | |
4069 | XSETFASTINT (w->last_overlay_modified, 0); | |
f984d4fc | 4070 | |
562dd5e9 MR |
4071 | adjust_glyphs (f); |
4072 | UNBLOCK_INPUT; | |
f984d4fc GM |
4073 | } |
4074 | } | |
4075 | ||
4076 | ||
562dd5e9 MR |
4077 | /* Shrink mini-window W. */ |
4078 | void | |
4079 | shrink_mini_window (struct window *w) | |
f984d4fc | 4080 | { |
562dd5e9 MR |
4081 | struct frame *f = XFRAME (w->frame); |
4082 | struct window *r; | |
4083 | Lisp_Object root, value; | |
4084 | EMACS_INT size; | |
43b4a21f | 4085 | |
562dd5e9 | 4086 | xassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4087 | |
562dd5e9 MR |
4088 | size = XINT (w->total_lines); |
4089 | if (size > 1) | |
4090 | { | |
4091 | root = FRAME_ROOT_WINDOW (f); | |
4092 | r = XWINDOW (root); | |
5386012d | 4093 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4094 | root, make_number (size - 1)); |
d615d6d2 | 4095 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4096 | { |
562dd5e9 | 4097 | BLOCK_INPUT; |
d615d6d2 | 4098 | window_resize_apply (r, 0); |
43b4a21f | 4099 | |
562dd5e9 MR |
4100 | /* Shrink the mini-window. */ |
4101 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); | |
4102 | XSETFASTINT (w->total_lines, 1); | |
43b4a21f | 4103 | |
562dd5e9 MR |
4104 | XSETFASTINT (w->last_modified, 0); |
4105 | XSETFASTINT (w->last_overlay_modified, 0); | |
43b4a21f | 4106 | |
562dd5e9 MR |
4107 | adjust_glyphs (f); |
4108 | UNBLOCK_INPUT; | |
f984d4fc | 4109 | } |
562dd5e9 MR |
4110 | /* If the above failed for whatever strange reason we must make a |
4111 | one window frame here. The same routine will be needed when | |
4112 | shrinking the frame (and probably when making the initial | |
4113 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4114 | } |
4115 | } | |
4116 | ||
562dd5e9 MR |
4117 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4118 | doc: /* Resize minibuffer window WINDOW. */) | |
4119 | (Lisp_Object window) | |
f984d4fc | 4120 | { |
562dd5e9 MR |
4121 | struct window *w = XWINDOW (window); |
4122 | struct window *r; | |
4123 | struct frame *f; | |
4124 | int height; | |
177c0ea7 | 4125 | |
562dd5e9 MR |
4126 | CHECK_WINDOW (window); |
4127 | f = XFRAME (w->frame); | |
177c0ea7 | 4128 | |
562dd5e9 MR |
4129 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
4130 | error ("Not a valid minibuffer window"); | |
4131 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4132 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4133 | |
562dd5e9 MR |
4134 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
4135 | height = XINT (r->total_lines) + XINT (w->total_lines); | |
d615d6d2 | 4136 | if (window_resize_check (r, 0) |
562dd5e9 MR |
4137 | && XINT (w->new_total) > 0 |
4138 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4139 | { |
562dd5e9 | 4140 | BLOCK_INPUT; |
d615d6d2 | 4141 | window_resize_apply (r, 0); |
f984d4fc | 4142 | |
562dd5e9 MR |
4143 | w->total_lines = w->new_total; |
4144 | XSETFASTINT (w->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
177c0ea7 | 4145 | |
562dd5e9 MR |
4146 | windows_or_buffers_changed++; |
4147 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4148 | adjust_glyphs (f); |
562dd5e9 | 4149 | UNBLOCK_INPUT; |
f984d4fc | 4150 | |
562dd5e9 MR |
4151 | run_window_configuration_change_hook (f); |
4152 | return Qt; | |
86c8e823 | 4153 | } |
562dd5e9 | 4154 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4155 | } |
562dd5e9 | 4156 | \f |
5500c422 GM |
4157 | /* Mark window cursors off for all windows in the window tree rooted |
4158 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4159 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4160 | the frame are cleared. */ | |
4161 | ||
4162 | void | |
971de7fb | 4163 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4164 | { |
4165 | while (w) | |
4166 | { | |
4167 | if (!NILP (w->hchild)) | |
4168 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4169 | else if (!NILP (w->vchild)) | |
4170 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4171 | else | |
4172 | w->phys_cursor_on_p = 0; | |
4173 | ||
4174 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4175 | } | |
4176 | } | |
4177 | ||
4178 | ||
e9c195b1 | 4179 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4180 | |
4181 | int | |
971de7fb | 4182 | window_internal_height (struct window *w) |
7ab12479 | 4183 | { |
949cf20f | 4184 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4185 | |
e9c195b1 GM |
4186 | if (!MINI_WINDOW_P (w)) |
4187 | { | |
4188 | if (!NILP (w->parent) | |
4189 | || !NILP (w->vchild) | |
4190 | || !NILP (w->hchild) | |
4191 | || !NILP (w->next) | |
4192 | || !NILP (w->prev) | |
4193 | || WINDOW_WANTS_MODELINE_P (w)) | |
4194 | --ht; | |
7ab12479 | 4195 | |
e9c195b1 GM |
4196 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4197 | --ht; | |
4198 | } | |
7ab12479 JB |
4199 | |
4200 | return ht; | |
4201 | } | |
5500c422 GM |
4202 | \f |
4203 | /************************************************************************ | |
4204 | Window Scrolling | |
4205 | ***********************************************************************/ | |
535e0b8e | 4206 | |
5500c422 | 4207 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4208 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4209 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4210 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4211 | means don't signal an error if we try to move over BEGV or ZV, | |
4212 | respectively. */ | |
7ab12479 | 4213 | |
101d1605 | 4214 | static void |
971de7fb | 4215 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 4216 | { |
cba59f77 RS |
4217 | immediate_quit = 1; |
4218 | ||
5500c422 GM |
4219 | /* If we must, use the pixel-based version which is much slower than |
4220 | the line-based one but can handle varying line heights. */ | |
4221 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4222 | window_scroll_pixel_based (window, n, whole, noerror); | |
4223 | else | |
4224 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4225 | |
4226 | immediate_quit = 0; | |
5500c422 GM |
4227 | } |
4228 | ||
4229 | ||
4230 | /* Implementation of window_scroll that works based on pixel line | |
4231 | heights. See the comment of window_scroll for parameter | |
4232 | descriptions. */ | |
4233 | ||
4234 | static void | |
971de7fb | 4235 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4236 | { |
4237 | struct it it; | |
4238 | struct window *w = XWINDOW (window); | |
4239 | struct text_pos start; | |
5500c422 | 4240 | int this_scroll_margin; |
9d14503e | 4241 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4242 | int vscrolled = 0; |
5a857365 | 4243 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4244 | void *itdata = NULL; |
5500c422 GM |
4245 | |
4246 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4247 | |
5500c422 | 4248 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4249 | the screen. Allow PT to be partially visible, otherwise |
4250 | something like (scroll-down 1) with PT in the line before | |
4251 | the partially visible one would recenter. */ | |
5a857365 KS |
4252 | |
4253 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4254 | { |
57b3e30b | 4255 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4256 | /* Move backward half the height of the window. Performance note: |
4257 | vmotion used here is about 10% faster, but would give wrong | |
4258 | results for variable height lines. */ | |
4259 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4260 | it.current_y = it.last_visible_y; | |
f204989e | 4261 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4262 | |
5500c422 GM |
4263 | /* The function move_iterator_vertically may move over more than |
4264 | the specified y-distance. If it->w is small, e.g. a | |
4265 | mini-buffer window, we may end up in front of the window's | |
4266 | display area. This is the case when Start displaying at the | |
4267 | start of the line containing PT in this case. */ | |
4268 | if (it.current_y <= 0) | |
4269 | { | |
4270 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4271 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4272 | it.current_y = 0; |
4273 | } | |
4274 | ||
4275 | start = it.current.pos; | |
35928349 | 4276 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4277 | } |
e56263e5 KS |
4278 | else if (auto_window_vscroll_p) |
4279 | { | |
5a857365 | 4280 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4281 | { |
4282 | int px; | |
4283 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4284 | if (whole) | |
e856c216 KS |
4285 | dy = max ((window_box_height (w) |
4286 | - next_screen_context_lines * dy), | |
4287 | dy); | |
e56263e5 KS |
4288 | dy *= n; |
4289 | ||
5a857365 | 4290 | if (n < 0) |
e56263e5 | 4291 | { |
5a857365 KS |
4292 | /* Only vscroll backwards if already vscrolled forwards. */ |
4293 | if (w->vscroll < 0 && rtop > 0) | |
4294 | { | |
4295 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4296 | Fset_window_vscroll (window, make_number (px), Qt); | |
4297 | return; | |
4298 | } | |
e56263e5 | 4299 | } |
5a857365 | 4300 | if (n > 0) |
e56263e5 | 4301 | { |
5a857365 KS |
4302 | /* Do vscroll if already vscrolled or only display line. */ |
4303 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4304 | { | |
4305 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4306 | Fset_window_vscroll (window, make_number (px), Qt); | |
4307 | return; | |
4308 | } | |
4309 | ||
4310 | /* Maybe modify window start instead of scrolling. */ | |
4311 | if (rbot > 0 || w->vscroll < 0) | |
4312 | { | |
2452438f | 4313 | EMACS_INT spos; |
5a857365 KS |
4314 | |
4315 | Fset_window_vscroll (window, make_number (0), Qt); | |
4316 | /* If there are other text lines above the current row, | |
4317 | move window start to current row. Else to next row. */ | |
4318 | if (rbot > 0) | |
4319 | spos = XINT (Fline_beginning_position (Qnil)); | |
4320 | else | |
4321 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4322 | set_marker_restricted (w->start, make_number (spos), | |
4323 | w->buffer); | |
4324 | w->start_at_line_beg = Qt; | |
4325 | w->update_mode_line = Qt; | |
4326 | XSETFASTINT (w->last_modified, 0); | |
4327 | XSETFASTINT (w->last_overlay_modified, 0); | |
4328 | /* Set force_start so that redisplay_window will run the | |
4329 | window-scroll-functions. */ | |
4330 | w->force_start = Qt; | |
4331 | return; | |
4332 | } | |
e56263e5 KS |
4333 | } |
4334 | } | |
5a857365 | 4335 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4336 | Fset_window_vscroll (window, make_number (0), Qt); |
4337 | } | |
5500c422 | 4338 | |
57b3e30b | 4339 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4340 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4341 | point in the same window line as it is now, so get that line. */ |
4342 | if (!NILP (Vscroll_preserve_screen_position)) | |
4343 | { | |
c525d842 | 4344 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4345 | calls to scroll-up, scroll-down and other commands that |
4346 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4347 | possibility of point becoming "stuck" on a tall line when |
4348 | scrolling by one line. */ | |
66fe93d1 | 4349 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4350 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4351 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4352 | { |
4353 | start_display (&it, w, start); | |
4354 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4355 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4356 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4357 | } |
5500c422 GM |
4358 | } |
4359 | else | |
c876b227 SM |
4360 | window_scroll_pixel_based_preserve_y |
4361 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4362 | |
4363 | /* Move iterator it from start the specified distance forward or | |
4364 | backward. The result is the new window start. */ | |
4365 | start_display (&it, w, start); | |
4366 | if (whole) | |
4367 | { | |
2452438f | 4368 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
4369 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4370 | dy = max ((window_box_height (w) | |
4371 | - next_screen_context_lines * dy), | |
4372 | dy) * n; | |
d72340d4 GM |
4373 | |
4374 | /* Note that move_it_vertically always moves the iterator to the | |
4375 | start of a line. So, if the last line doesn't have a newline, | |
4376 | we would end up at the start of the line ending at ZV. */ | |
4377 | if (dy <= 0) | |
e856c216 KS |
4378 | { |
4379 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4380 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4381 | looking at an image that is taller that the window height. */ |
4382 | while (start_pos == IT_CHARPOS (it) | |
4383 | && start_pos > BEGV) | |
e4cc2dfc | 4384 | move_it_by_lines (&it, -1); |
e856c216 | 4385 | } |
d72340d4 | 4386 | else if (dy > 0) |
bed83ee4 | 4387 | { |
bed83ee4 KS |
4388 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4389 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4390 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4391 | looking at an image that is taller that the window height. */ |
4392 | while (start_pos == IT_CHARPOS (it) | |
4393 | && start_pos < ZV) | |
e4cc2dfc | 4394 | move_it_by_lines (&it, 1); |
bed83ee4 | 4395 | } |
5500c422 GM |
4396 | } |
4397 | else | |
e4cc2dfc | 4398 | move_it_by_lines (&it, n); |
5500c422 | 4399 | |
96ae58c8 RS |
4400 | /* We failed if we find ZV is already on the screen (scrolling up, |
4401 | means there's nothing past the end), or if we can't start any | |
4402 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4403 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4404 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4405 | { |
5cdb3cf3 MB |
4406 | if (IT_CHARPOS (it) == ZV) |
4407 | { | |
07ce8b53 RS |
4408 | if (it.current_y < it.last_visible_y |
4409 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4410 | > it.last_visible_y)) |
a74eca50 GM |
4411 | { |
4412 | /* The last line was only partially visible, make it fully | |
4413 | visible. */ | |
4414 | w->vscroll = (it.last_visible_y | |
4415 | - it.current_y + it.max_ascent + it.max_descent); | |
4416 | adjust_glyphs (it.f); | |
4417 | } | |
5cdb3cf3 | 4418 | else |
57b3e30b | 4419 | { |
35928349 | 4420 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4421 | if (noerror) |
4422 | return; | |
4423 | else if (n < 0) /* could happen with empty buffers */ | |
4424 | xsignal0 (Qbeginning_of_buffer); | |
4425 | else | |
4426 | xsignal0 (Qend_of_buffer); | |
4427 | } | |
5cdb3cf3 | 4428 | } |
5500c422 | 4429 | else |
5cdb3cf3 MB |
4430 | { |
4431 | if (w->vscroll != 0) | |
4432 | /* The first line was only partially visible, make it fully | |
4433 | visible. */ | |
4434 | w->vscroll = 0; | |
5cdb3cf3 | 4435 | else |
57b3e30b | 4436 | { |
35928349 | 4437 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4438 | if (noerror) |
4439 | return; | |
4440 | else | |
4441 | xsignal0 (Qbeginning_of_buffer); | |
4442 | } | |
5cdb3cf3 MB |
4443 | } |
4444 | ||
4445 | /* If control gets here, then we vscrolled. */ | |
4446 | ||
4447 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4448 | ||
4449 | /* Don't try to change the window start below. */ | |
4450 | vscrolled = 1; | |
5500c422 GM |
4451 | } |
4452 | ||
5cdb3cf3 MB |
4453 | if (! vscrolled) |
4454 | { | |
2452438f EZ |
4455 | EMACS_INT pos = IT_CHARPOS (it); |
4456 | EMACS_INT bytepos; | |
e68def1e AS |
4457 | |
4458 | /* If in the middle of a multi-glyph character move forward to | |
4459 | the next character. */ | |
4460 | if (in_display_vector_p (&it)) | |
4461 | { | |
4462 | ++pos; | |
4463 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4464 | } | |
4465 | ||
5cdb3cf3 | 4466 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4467 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4468 | w->buffer); |
dad67609 RS |
4469 | bytepos = XMARKER (w->start)->bytepos; |
4470 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4471 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4472 | w->update_mode_line = Qt; |
4473 | XSETFASTINT (w->last_modified, 0); | |
4474 | XSETFASTINT (w->last_overlay_modified, 0); | |
4475 | /* Set force_start so that redisplay_window will run the | |
4476 | window-scroll-functions. */ | |
4477 | w->force_start = Qt; | |
4478 | } | |
177c0ea7 | 4479 | |
dc297565 RS |
4480 | /* The rest of this function uses current_y in a nonstandard way, |
4481 | not including the height of the header line if any. */ | |
5500c422 | 4482 | it.current_y = it.vpos = 0; |
177c0ea7 | 4483 | |
940f53e5 RS |
4484 | /* Move PT out of scroll margins. |
4485 | This code wants current_y to be zero at the window start position | |
4486 | even if there is a header line. */ | |
4487 | this_scroll_margin = max (0, scroll_margin); | |
4488 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4489 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4490 | ||
4491 | if (n > 0) | |
5500c422 | 4492 | { |
940f53e5 RS |
4493 | /* We moved the window start towards ZV, so PT may be now |
4494 | in the scroll margin at the top. */ | |
4495 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4496 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4497 | && (NILP (Vscroll_preserve_screen_position) | |
4498 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4499 | /* We found PT at a legitimate height. Leave it alone. */ |
4500 | ; | |
66fe93d1 | 4501 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4502 | { |
fa3c3426 RS |
4503 | /* If we have a header line, take account of it. |
4504 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4505 | move_it_to (&it, -1, |
4506 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4507 | window_scroll_pixel_based_preserve_y |
4508 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4509 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4510 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4511 | } | |
4512 | else | |
5500c422 | 4513 | { |
5500c422 | 4514 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4515 | { |
4516 | int prev = it.current_y; | |
e4cc2dfc | 4517 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4518 | if (prev == it.current_y) |
4519 | break; | |
4520 | } | |
5500c422 GM |
4521 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4522 | } | |
940f53e5 RS |
4523 | } |
4524 | else if (n < 0) | |
4525 | { | |
2452438f | 4526 | EMACS_INT charpos, bytepos; |
aed328bf | 4527 | int partial_p; |
940f53e5 | 4528 | |
66fe93d1 LT |
4529 | /* Save our position, for the |
4530 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4531 | charpos = IT_CHARPOS (it); |
4532 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4533 | |
940f53e5 RS |
4534 | /* We moved the window start towards BEGV, so PT may be now |
4535 | in the scroll margin at the bottom. */ | |
4536 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4537 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4538 | - this_scroll_margin - 1), | |
4539 | -1, | |
940f53e5 RS |
4540 | MOVE_TO_POS | MOVE_TO_Y); |
4541 | ||
aed328bf KS |
4542 | /* Save our position, in case it's correct. */ |
4543 | charpos = IT_CHARPOS (it); | |
4544 | bytepos = IT_BYTEPOS (it); | |
4545 | ||
4546 | /* See if point is on a partially visible line at the end. */ | |
4547 | if (it.what == IT_EOB) | |
4548 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4549 | else | |
4550 | { | |
e4cc2dfc | 4551 | move_it_by_lines (&it, 1); |
aed328bf KS |
4552 | partial_p = it.current_y > it.last_visible_y; |
4553 | } | |
4554 | ||
bdf4ec93 RS |
4555 | if (charpos == PT && !partial_p |
4556 | && (NILP (Vscroll_preserve_screen_position) | |
4557 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4558 | /* We found PT before we found the display margin, so PT is ok. */ |
4559 | ; | |
66fe93d1 | 4560 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
4561 | { |
4562 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4563 | start_display (&it, w, start); | |
c525d842 CY |
4564 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4565 | here because we called start_display again and did not | |
4566 | alter it.current_y this time. */ | |
c876b227 SM |
4567 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4568 | window_scroll_pixel_based_preserve_y, -1, | |
4569 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4570 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4571 | } | |
4572 | else | |
4573 | { | |
aed328bf | 4574 | if (partial_p) |
5cdb3cf3 MB |
4575 | /* The last line was only partially visible, so back up two |
4576 | lines to make sure we're on a fully visible line. */ | |
4577 | { | |
e4cc2dfc | 4578 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4579 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4580 | } | |
4581 | else | |
4582 | /* No, the position we saved is OK, so use it. */ | |
4583 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4584 | } |
4585 | } | |
35928349 | 4586 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4587 | } |
4588 | ||
4589 | ||
4590 | /* Implementation of window_scroll that works based on screen lines. | |
4591 | See the comment of window_scroll for parameter descriptions. */ | |
4592 | ||
4593 | static void | |
971de7fb | 4594 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4595 | { |
4596 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4597 | /* Fvertical_motion enters redisplay, which can trigger |
4598 | fontification, which in turn can modify buffer text (e.g., if the | |
4599 | fontification functions replace escape sequences with faces, as | |
4600 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4601 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4602 | Lisp_Object opoint_marker = Fpoint_marker (); | |
2452438f | 4603 | register EMACS_INT pos, pos_byte; |
7ab12479 JB |
4604 | register int ht = window_internal_height (w); |
4605 | register Lisp_Object tem; | |
4606 | int lose; | |
5500c422 | 4607 | Lisp_Object bolp; |
2452438f | 4608 | EMACS_INT startpos; |
c876b227 | 4609 | Lisp_Object original_pos = Qnil; |
101d1605 | 4610 | |
d4e7cf01 GM |
4611 | /* If scrolling screen-fulls, compute the number of lines to |
4612 | scroll from the window's height. */ | |
4613 | if (whole) | |
4614 | n *= max (1, ht - next_screen_context_lines); | |
4615 | ||
101d1605 RS |
4616 | startpos = marker_position (w->start); |
4617 | ||
c876b227 SM |
4618 | if (!NILP (Vscroll_preserve_screen_position)) |
4619 | { | |
4620 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4621 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4622 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4623 | { |
4624 | struct position posit | |
4625 | = *compute_motion (startpos, 0, 0, 0, | |
4626 | PT, ht, 0, | |
4627 | -1, XINT (w->hscroll), | |
4628 | 0, w); | |
4629 | window_scroll_preserve_vpos = posit.vpos; | |
4630 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
4631 | } | |
4632 | ||
4633 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4634 | make_number (window_scroll_preserve_vpos)); | |
4635 | } | |
0a1f771a | 4636 | |
d834a2e9 | 4637 | XSETFASTINT (tem, PT); |
6ffdb539 | 4638 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4639 | |
265a9e55 | 4640 | if (NILP (tem)) |
7ab12479 | 4641 | { |
cd2be1dd | 4642 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4643 | startpos = PT; |
7ab12479 JB |
4644 | } |
4645 | ||
345d45b2 | 4646 | SET_PT (startpos); |
5ce7b543 | 4647 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4648 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4649 | pos = PT; |
b73ea88e | 4650 | pos_byte = PT_BYTE; |
7ab12479 | 4651 | bolp = Fbolp (); |
03ab8921 EZ |
4652 | SET_PT_BOTH (marker_position (opoint_marker), |
4653 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4654 | |
4655 | if (lose) | |
f8026fd8 JB |
4656 | { |
4657 | if (noerror) | |
4658 | return; | |
4659 | else | |
ba96a5cf | 4660 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4661 | } |
7ab12479 JB |
4662 | |
4663 | if (pos < ZV) | |
7ab12479 | 4664 | { |
0c7da84e | 4665 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 PE |
4666 | int this_scroll_margin = |
4667 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); | |
0c7da84e | 4668 | |
b73ea88e | 4669 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4670 | w->start_at_line_beg = bolp; |
4671 | w->update_mode_line = Qt; | |
d834a2e9 | 4672 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4673 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4674 | /* Set force_start so that redisplay_window will run |
4675 | the window-scroll-functions. */ | |
4676 | w->force_start = Qt; | |
0c7da84e | 4677 | |
bdf4ec93 RS |
4678 | if (!NILP (Vscroll_preserve_screen_position) |
4679 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4680 | { |
b73ea88e | 4681 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4682 | Fvertical_motion (original_pos, window); |
0c7da84e | 4683 | } |
101d1605 RS |
4684 | /* If we scrolled forward, put point enough lines down |
4685 | that it is outside the scroll margin. */ | |
4686 | else if (n > 0) | |
0c7da84e | 4687 | { |
101d1605 RS |
4688 | int top_margin; |
4689 | ||
4690 | if (this_scroll_margin > 0) | |
4691 | { | |
b73ea88e | 4692 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4693 | Fvertical_motion (make_number (this_scroll_margin), window); |
4694 | top_margin = PT; | |
4695 | } | |
4696 | else | |
4697 | top_margin = pos; | |
4698 | ||
03ab8921 EZ |
4699 | if (top_margin <= marker_position (opoint_marker)) |
4700 | SET_PT_BOTH (marker_position (opoint_marker), | |
4701 | marker_byte_position (opoint_marker)); | |
5500c422 | 4702 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4703 | { |
b73ea88e | 4704 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4705 | Fvertical_motion (original_pos, window); |
101d1605 | 4706 | } |
9317a85d | 4707 | else |
335406fc | 4708 | SET_PT (top_margin); |
0c7da84e | 4709 | } |
101d1605 | 4710 | else if (n < 0) |
7ab12479 | 4711 | { |
101d1605 RS |
4712 | int bottom_margin; |
4713 | ||
0c7da84e RS |
4714 | /* If we scrolled backward, put point near the end of the window |
4715 | but not within the scroll margin. */ | |
b73ea88e | 4716 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4717 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4718 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4719 | bottom_margin = PT; | |
4720 | else | |
4721 | bottom_margin = PT + 1; | |
4722 | ||
03ab8921 EZ |
4723 | if (bottom_margin > marker_position (opoint_marker)) |
4724 | SET_PT_BOTH (marker_position (opoint_marker), | |
4725 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4726 | else |
101d1605 | 4727 | { |
5500c422 | 4728 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4729 | { |
b73ea88e | 4730 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4731 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4732 | } |
4733 | else | |
4734 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4735 | } |
7ab12479 JB |
4736 | } |
4737 | } | |
4738 | else | |
f8026fd8 JB |
4739 | { |
4740 | if (noerror) | |
4741 | return; | |
4742 | else | |
ba96a5cf | 4743 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4744 | } |
7ab12479 | 4745 | } |
5500c422 GM |
4746 | |
4747 | ||
4748 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4749 | screen-full which is defined as the height of the window minus | |
4750 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4751 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4752 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4753 | |
4754 | static void | |
971de7fb | 4755 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4756 | { |
331379bf | 4757 | int count = SPECPDL_INDEX (); |
7ab12479 | 4758 | |
1ea40aa2 | 4759 | xassert (eabs (direction) == 1); |
5500c422 GM |
4760 | |
4761 | /* If selected window's buffer isn't current, make it current for | |
4762 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4763 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4764 | { |
4765 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4766 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4767 | |
4768 | /* Make redisplay consider other windows than just selected_window. */ | |
4769 | ++windows_or_buffers_changed; | |
95605e15 | 4770 | } |
7ab12479 | 4771 | |
265a9e55 | 4772 | if (NILP (n)) |
d4e7cf01 | 4773 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4774 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4775 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4776 | else |
4777 | { | |
4778 | n = Fprefix_numeric_value (n); | |
101d1605 | 4779 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4780 | } |
95605e15 JB |
4781 | |
4782 | unbind_to (count, Qnil); | |
7ab12479 JB |
4783 | } |
4784 | ||
e0965597 | 4785 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4786 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4787 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4788 | A near full screen is `next-screen-context-lines' less than a full screen. |
4789 | Negative ARG means scroll downward. | |
4790 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4791 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4792 | (Lisp_Object arg) |
7ab12479 | 4793 | { |
413430c5 | 4794 | scroll_command (arg, 1); |
7ab12479 JB |
4795 | return Qnil; |
4796 | } | |
4797 | ||
e0965597 | 4798 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4799 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4800 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4801 | A near full screen is `next-screen-context-lines' less than a full screen. |
4802 | Negative ARG means scroll upward. | |
4803 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4804 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4805 | (Lisp_Object arg) |
7ab12479 | 4806 | { |
413430c5 | 4807 | scroll_command (arg, -1); |
7ab12479 JB |
4808 | return Qnil; |
4809 | } | |
ccd0664b RS |
4810 | \f |
4811 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4812 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4813 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4814 | showing that buffer is used. |
4815 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4816 | specifies the window. This takes precedence over | |
4817 | `other-window-scroll-buffer'. */) | |
5842a27b | 4818 | (void) |
7ab12479 | 4819 | { |
ccd0664b | 4820 | Lisp_Object window; |
7ab12479 JB |
4821 | |
4822 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4823 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4824 | window = Vminibuf_scroll_window; |
4825 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4826 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4827 | { |
4828 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4829 | if (NILP (window)) |
87478b52 | 4830 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4831 | } |
4832 | else | |
dbc4e1c1 JB |
4833 | { |
4834 | /* Nothing specified; look for a neighboring window on the same | |
4835 | frame. */ | |
4836 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4837 | ||
4838 | if (EQ (window, selected_window)) | |
4839 | /* That didn't get us anywhere; look for a window on another | |
4840 | visible frame. */ | |
4841 | do | |
4842 | window = Fnext_window (window, Qnil, Qt); | |
4843 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4844 | && ! EQ (window, selected_window)); | |
4845 | } | |
4846 | ||
b7826503 | 4847 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4848 | |
4849 | if (EQ (window, selected_window)) | |
4850 | error ("There is no other window"); | |
4851 | ||
ccd0664b RS |
4852 | return window; |
4853 | } | |
4854 | ||
4855 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4856 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4857 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4858 | The next window is the one below the current one; or the one at the top | |
4859 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4860 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4861 | When calling from a program, supply as argument a number, nil, or `-'. | |
4862 | ||
fdb82f93 | 4863 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
4864 | showing that buffer, popping the buffer up if necessary. |
4865 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4866 | specifies the window to scroll. This takes precedence over | |
4867 | `other-window-scroll-buffer'. */) | |
5842a27b | 4868 | (Lisp_Object arg) |
ccd0664b | 4869 | { |
d4e7cf01 GM |
4870 | Lisp_Object window; |
4871 | struct window *w; | |
331379bf | 4872 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
4873 | |
4874 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4875 | w = XWINDOW (window); |
7ab12479 JB |
4876 | |
4877 | /* Don't screw up if window_scroll gets an error. */ | |
4878 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4879 | ++windows_or_buffers_changed; |
7ab12479 JB |
4880 | |
4881 | Fset_buffer (w->buffer); | |
4882 | SET_PT (marker_position (w->pointm)); | |
4883 | ||
413430c5 | 4884 | if (NILP (arg)) |
d4e7cf01 | 4885 | window_scroll (window, 1, 1, 1); |
413430c5 | 4886 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4887 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4888 | else |
4889 | { | |
413430c5 EN |
4890 | if (CONSP (arg)) |
4891 | arg = Fcar (arg); | |
b7826503 | 4892 | CHECK_NUMBER (arg); |
101d1605 | 4893 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4894 | } |
4895 | ||
b73ea88e | 4896 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4897 | unbind_to (count, Qnil); |
7ab12479 JB |
4898 | |
4899 | return Qnil; | |
4900 | } | |
4901 | \f | |
e0965597 | 4902 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 4903 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4904 | Default for ARG is window width minus 2. |
4905 | Value is the total amount of leftward horizontal scrolling in | |
4906 | effect after the change. | |
23fe745a | 4907 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4908 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4909 | will not scroll a window to a column less than the value returned |
dc297565 | 4910 | by this function. This happens in an interactive call. */) |
5842a27b | 4911 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4912 | { |
c67fa410 GM |
4913 | Lisp_Object result; |
4914 | int hscroll; | |
4915 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4916 | |
265a9e55 | 4917 | if (NILP (arg)) |
abde8f8c | 4918 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
4919 | else |
4920 | arg = Fprefix_numeric_value (arg); | |
4921 | ||
c67fa410 GM |
4922 | hscroll = XINT (w->hscroll) + XINT (arg); |
4923 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4924 | ||
dc297565 | 4925 | if (!NILP (set_minimum)) |
c67fa410 GM |
4926 | w->min_hscroll = w->hscroll; |
4927 | ||
4928 | return result; | |
7ab12479 JB |
4929 | } |
4930 | ||
e0965597 | 4931 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 4932 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4933 | Default for ARG is window width minus 2. |
4934 | Value is the total amount of leftward horizontal scrolling in | |
4935 | effect after the change. | |
23fe745a | 4936 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4937 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4938 | will not scroll a window to a column less than the value returned |
dc297565 | 4939 | by this function. This happens in an interactive call. */) |
5842a27b | 4940 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4941 | { |
c67fa410 GM |
4942 | Lisp_Object result; |
4943 | int hscroll; | |
4944 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4945 | |
265a9e55 | 4946 | if (NILP (arg)) |
abde8f8c | 4947 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
4948 | else |
4949 | arg = Fprefix_numeric_value (arg); | |
4950 | ||
c67fa410 GM |
4951 | hscroll = XINT (w->hscroll) - XINT (arg); |
4952 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 4953 | |
dc297565 | 4954 | if (!NILP (set_minimum)) |
c67fa410 GM |
4955 | w->min_hscroll = w->hscroll; |
4956 | ||
4957 | return result; | |
7ab12479 JB |
4958 | } |
4959 | ||
fa832261 KS |
4960 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
4961 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 4962 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 4963 | (void) |
fa832261 KS |
4964 | { |
4965 | if (minibuf_level > 0 | |
4966 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
4967 | && WINDOW_LIVE_P (minibuf_selected_window)) |
4968 | return minibuf_selected_window; | |
4969 | ||
4970 | return Qnil; | |
4971 | } | |
4972 | ||
12c8b416 GM |
4973 | /* Value is the number of lines actually displayed in window W, |
4974 | as opposed to its height. */ | |
4975 | ||
4976 | static int | |
971de7fb | 4977 | displayed_window_lines (struct window *w) |
12c8b416 GM |
4978 | { |
4979 | struct it it; | |
4980 | struct text_pos start; | |
4981 | int height = window_box_height (w); | |
4982 | struct buffer *old_buffer; | |
4983 | int bottom_y; | |
57b3e30b | 4984 | void *itdata = NULL; |
12c8b416 GM |
4985 | |
4986 | if (XBUFFER (w->buffer) != current_buffer) | |
4987 | { | |
4988 | old_buffer = current_buffer; | |
4989 | set_buffer_internal (XBUFFER (w->buffer)); | |
4990 | } | |
4991 | else | |
4992 | old_buffer = NULL; | |
4993 | ||
521b203e GM |
4994 | /* In case W->start is out of the accessible range, do something |
4995 | reasonable. This happens in Info mode when Info-scroll-down | |
4996 | calls (recenter -1) while W->start is 1. */ | |
4997 | if (XMARKER (w->start)->charpos < BEGV) | |
4998 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4999 | else if (XMARKER (w->start)->charpos > ZV) | |
5000 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5001 | else | |
5002 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5003 | ||
57b3e30b | 5004 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5005 | start_display (&it, w, start); |
5006 | move_it_vertically (&it, height); | |
c8bc6f65 | 5007 | bottom_y = line_bottom_y (&it); |
35928349 | 5008 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5009 | |
1de65f51 RS |
5010 | /* rms: On a non-window display, |
5011 | the value of it.vpos at the bottom of the screen | |
5012 | seems to be 1 larger than window_box_height (w). | |
5013 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5014 | when ZV is on the last screen line | |
5015 | moves to the previous screen line instead of the last one. */ | |
5016 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5017 | height++; | |
5018 | ||
12c8b416 GM |
5019 | /* Add in empty lines at the bottom of the window. */ |
5020 | if (bottom_y < height) | |
5021 | { | |
949cf20f | 5022 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5023 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5024 | } |
5025 | ||
c8bc6f65 GM |
5026 | if (old_buffer) |
5027 | set_buffer_internal (old_buffer); | |
5028 | ||
12c8b416 GM |
5029 | return it.vpos; |
5030 | } | |
5031 | ||
5032 | ||
a7ca3326 | 5033 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5034 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5035 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5036 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5037 | bottom of the window. (ARG should be less than the height of the window.) |
5038 | ||
666e158e MB |
5039 | If ARG is omitted or nil, then recenter with point on the middle line of |
5040 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5041 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5042 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5043 | height needed); if `recenter-redisplay' has the special value `tty', | |
5044 | then only tty frame are redrawn. | |
7d1d98ee | 5045 | |
fdb82f93 PJ |
5046 | Just C-u as prefix means put point in the center of the window |
5047 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5048 | (register Lisp_Object arg) |
7ab12479 | 5049 | { |
6df47b59 | 5050 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5051 | struct buffer *buf = XBUFFER (w->buffer); |
5052 | struct buffer *obuf = current_buffer; | |
6df47b59 | 5053 | int center_p = 0; |
2452438f | 5054 | EMACS_INT charpos, bytepos; |
71f02bc5 | 5055 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5056 | int this_scroll_margin; |
7ab12479 | 5057 | |
0fa5d25b RS |
5058 | /* If redisplay is suppressed due to an error, try again. */ |
5059 | obuf->display_error_modiff = 0; | |
5060 | ||
413430c5 | 5061 | if (NILP (arg)) |
7ab12479 | 5062 | { |
666e158e MB |
5063 | if (!NILP (Vrecenter_redisplay) |
5064 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5065 | || !NILP (Ftty_type (selected_frame)))) | |
5066 | { | |
ebfa62c0 | 5067 | ptrdiff_t i; |
f02d6d5c | 5068 | |
666e158e MB |
5069 | /* Invalidate pixel data calculated for all compositions. */ |
5070 | for (i = 0; i < n_compositions; i++) | |
5071 | composition_table[i]->font = NULL; | |
7ab12479 | 5072 | |
666e158e MB |
5073 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5074 | ||
5075 | Fredraw_frame (WINDOW_FRAME (w)); | |
5076 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5077 | } | |
7d1d98ee | 5078 | |
6df47b59 | 5079 | center_p = 1; |
7ab12479 | 5080 | } |
413430c5 | 5081 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5082 | center_p = 1; |
7ab12479 JB |
5083 | else |
5084 | { | |
413430c5 | 5085 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5086 | CHECK_NUMBER (arg); |
ae12ecd7 | 5087 | iarg = XINT (arg); |
7ab12479 JB |
5088 | } |
5089 | ||
478292ed | 5090 | set_buffer_internal (buf); |
7ab12479 | 5091 | |
f6b43440 RS |
5092 | /* Do this after making BUF current |
5093 | in case scroll_margin is buffer-local. */ | |
71f02bc5 PE |
5094 | this_scroll_margin = |
5095 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); | |
f6b43440 | 5096 | |
521b203e | 5097 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5098 | have variable-height lines and centering point on the basis of |
5099 | line counts would lead to strange effects. */ | |
521b203e | 5100 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5101 | { |
6df47b59 GM |
5102 | if (center_p) |
5103 | { | |
521b203e GM |
5104 | struct it it; |
5105 | struct text_pos pt; | |
57b3e30b | 5106 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5107 | |
521b203e GM |
5108 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5109 | start_display (&it, w, pt); | |
f204989e | 5110 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5111 | charpos = IT_CHARPOS (it); |
5112 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5113 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5114 | } |
f6b43440 | 5115 | else if (iarg < 0) |
6df47b59 | 5116 | { |
521b203e GM |
5117 | struct it it; |
5118 | struct text_pos pt; | |
71f02bc5 | 5119 | int nlines = min (INT_MAX, -iarg); |
f204989e KS |
5120 | int extra_line_spacing; |
5121 | int h = window_box_height (w); | |
57b3e30b | 5122 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5123 | |
f6b43440 RS |
5124 | iarg = - max (-iarg, this_scroll_margin); |
5125 | ||
521b203e GM |
5126 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5127 | start_display (&it, w, pt); | |
f204989e KS |
5128 | |
5129 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5130 | move_it_by_lines (&it, 0); |
521b203e | 5131 | |
d466fa4d | 5132 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5133 | height minus what's displayed in the line containing PT, |
5134 | and the lines below. */ | |
f204989e KS |
5135 | it.current_y = 0; |
5136 | it.vpos = 0; | |
e4cc2dfc | 5137 | move_it_by_lines (&it, nlines); |
d466fa4d | 5138 | |
f204989e KS |
5139 | if (it.vpos == nlines) |
5140 | h -= it.current_y; | |
5141 | else | |
5142 | { | |
5143 | /* Last line has no newline */ | |
5144 | h -= line_bottom_y (&it); | |
5145 | it.vpos++; | |
5146 | } | |
5147 | ||
5148 | /* Don't reserve space for extra line spacing of last line. */ | |
5149 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5150 | |
5151 | /* If we can't move down NLINES lines because we hit | |
5152 | the end of the buffer, count in some empty lines. */ | |
5153 | if (it.vpos < nlines) | |
f204989e KS |
5154 | { |
5155 | nlines -= it.vpos; | |
5156 | extra_line_spacing = it.extra_line_spacing; | |
5157 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5158 | } | |
5159 | if (h <= 0) | |
57b3e30b | 5160 | { |
35928349 | 5161 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5162 | return Qnil; |
5163 | } | |
201c831a | 5164 | |
f204989e | 5165 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5166 | start_display (&it, w, pt); |
f204989e KS |
5167 | it.current_y = 0; |
5168 | move_it_vertically_backward (&it, h); | |
5169 | ||
5170 | /* If extra line spacing is present, we may move too far | |
5171 | back. This causes the last line to be only partially | |
5172 | visible (which triggers redisplay to recenter that line | |
5173 | in the middle), so move forward. | |
5174 | But ignore extra line spacing on last line, as it is not | |
5175 | considered to be part of the visible height of the line. | |
5176 | */ | |
5177 | h += extra_line_spacing; | |
5178 | while (-it.current_y > h) | |
e4cc2dfc | 5179 | move_it_by_lines (&it, 1); |
f204989e | 5180 | |
521b203e GM |
5181 | charpos = IT_CHARPOS (it); |
5182 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5183 | |
35928349 | 5184 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5185 | } |
521b203e GM |
5186 | else |
5187 | { | |
5188 | struct position pos; | |
f6b43440 | 5189 | |
f6b43440 RS |
5190 | iarg = max (iarg, this_scroll_margin); |
5191 | ||
5192 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5193 | charpos = pos.bufpos; |
5194 | bytepos = pos.bytepos; | |
5195 | } | |
5196 | } | |
5197 | else | |
5198 | { | |
5199 | struct position pos; | |
5200 | int ht = window_internal_height (w); | |
5201 | ||
5202 | if (center_p) | |
a4429c5b | 5203 | iarg = ht / 2; |
f567c488 KS |
5204 | else if (iarg < 0) |
5205 | iarg += ht; | |
f6b43440 RS |
5206 | |
5207 | /* Don't let it get into the margin at either top or bottom. */ | |
5208 | iarg = max (iarg, this_scroll_margin); | |
5209 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5210 | |
f6b43440 | 5211 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5212 | charpos = pos.bufpos; |
5213 | bytepos = pos.bytepos; | |
5214 | } | |
5215 | ||
5216 | /* Set the new window start. */ | |
5217 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5218 | w->window_end_valid = Qnil; |
177c0ea7 | 5219 | |
95605b1b RS |
5220 | w->optional_new_start = Qt; |
5221 | ||
6df47b59 GM |
5222 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5223 | w->start_at_line_beg = Qt; | |
5224 | else | |
5225 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5226 | |
478292ed | 5227 | set_buffer_internal (obuf); |
7ab12479 JB |
5228 | return Qnil; |
5229 | } | |
b7617575 | 5230 | |
81fe0836 | 5231 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5232 | 0, 1, 0, |
5233 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5234 | WINDOW defaults to the selected window. |
8fef9de1 | 5235 | |
f039b2d2 CY |
5236 | The return value does not include the mode line, any header line, nor |
5237 | any partial-height lines in the text display area. */) | |
5842a27b | 5238 | (Lisp_Object window) |
81fe0836 MB |
5239 | { |
5240 | struct window *w = decode_window (window); | |
5241 | int pixel_height = window_box_height (w); | |
949cf20f | 5242 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5243 | return make_number (line_height); |
5244 | } | |
5245 | ||
5246 | ||
7ab12479 JB |
5247 | \f |
5248 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5249 | 1, 1, "P", |
5250 | doc: /* Position point relative to window. | |
5251 | With no argument, position point at center of window. | |
5252 | An argument specifies vertical position within the window; | |
5253 | zero means top of window, negative means relative to bottom of window. */) | |
5842a27b | 5254 | (Lisp_Object arg) |
7ab12479 | 5255 | { |
b7617575 GM |
5256 | struct window *w = XWINDOW (selected_window); |
5257 | int lines, start; | |
540b6aa0 | 5258 | Lisp_Object window; |
f6b43440 RS |
5259 | #if 0 |
5260 | int this_scroll_margin; | |
5261 | #endif | |
7ab12479 | 5262 | |
794b75c7 SM |
5263 | if (!(BUFFERP (w->buffer) |
5264 | && XBUFFER (w->buffer) == current_buffer)) | |
5265 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer | |
5266 | when passed below to set_marker_both. */ | |
5267 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5268 | |
b7617575 | 5269 | window = selected_window; |
7ab12479 JB |
5270 | start = marker_position (w->start); |
5271 | if (start < BEGV || start > ZV) | |
5272 | { | |
b7617575 | 5273 | int height = window_internal_height (w); |
cd2be1dd | 5274 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5275 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5276 | w->start_at_line_beg = Fbolp (); |
5277 | w->force_start = Qt; | |
5278 | } | |
5279 | else | |
b73ea88e | 5280 | Fgoto_char (w->start); |
7ab12479 | 5281 | |
b7617575 | 5282 | lines = displayed_window_lines (w); |
f6b43440 RS |
5283 | |
5284 | #if 0 | |
71f02bc5 | 5285 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5286 | #endif |
5287 | ||
b7617575 GM |
5288 | if (NILP (arg)) |
5289 | XSETFASTINT (arg, lines / 2); | |
5290 | else | |
5291 | { | |
71f02bc5 | 5292 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5293 | |
5294 | if (iarg < 0) | |
5295 | iarg = iarg + lines; | |
5296 | ||
5297 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5298 | to a place inside the scroll margins (which would cause the | |
5299 | next redisplay to scroll). I wrote this code, but then concluded | |
5300 | it is probably better not to install it. However, it is here | |
5301 | inside #if 0 so as not to lose it. -- rms. */ | |
5302 | ||
5303 | /* Don't let it get into the margin at either top or bottom. */ | |
5304 | iarg = max (iarg, this_scroll_margin); | |
5305 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5306 | #endif | |
5307 | ||
5308 | arg = make_number (iarg); | |
b7617575 GM |
5309 | } |
5310 | ||
c8bc6f65 | 5311 | /* Skip past a partially visible first line. */ |
163784df | 5312 | if (w->vscroll) |
163784df MB |
5313 | XSETINT (arg, XINT (arg) + 1); |
5314 | ||
540b6aa0 | 5315 | return Fvertical_motion (arg, window); |
7ab12479 | 5316 | } |
5500c422 GM |
5317 | |
5318 | ||
7ab12479 | 5319 | \f |
5500c422 GM |
5320 | /*********************************************************************** |
5321 | Window Configuration | |
5322 | ***********************************************************************/ | |
5323 | ||
7ab12479 JB |
5324 | struct save_window_data |
5325 | { | |
b102ceb1 | 5326 | struct vectorlike_header header; |
bdc727bf | 5327 | Lisp_Object selected_frame; |
7ab12479 JB |
5328 | Lisp_Object current_window; |
5329 | Lisp_Object current_buffer; | |
5330 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5331 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5332 | Lisp_Object root_window; |
bdc727bf | 5333 | Lisp_Object focus_frame; |
cbff28e8 RS |
5334 | /* A vector, each of whose elements is a struct saved_window |
5335 | for one window. */ | |
7ab12479 | 5336 | Lisp_Object saved_windows; |
b05b4e27 SM |
5337 | |
5338 | /* All fields above are traced by the GC. | |
5339 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5340 | ||
5341 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5342 | int frame_tool_bar_lines; | |
7ab12479 | 5343 | }; |
ff06df24 | 5344 | |
cbff28e8 | 5345 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5346 | struct saved_window |
ea68264b | 5347 | { |
b102ceb1 | 5348 | struct vectorlike_header header; |
496e208e | 5349 | |
28545e04 | 5350 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5351 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5352 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5353 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5354 | Lisp_Object parent, prev; |
5355 | Lisp_Object start_at_line_beg; | |
5356 | Lisp_Object display_table; | |
949cf20f KS |
5357 | Lisp_Object left_margin_cols, right_margin_cols; |
5358 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5359 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
496e208e | 5360 | Lisp_Object splits, nest, window_parameters; |
ea68264b GM |
5361 | }; |
5362 | ||
7ab12479 JB |
5363 | #define SAVED_WINDOW_N(swv,n) \ |
5364 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5365 | ||
5366 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5367 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5368 | (Lisp_Object object) |
7ab12479 | 5369 | { |
6ad0381c | 5370 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5371 | } |
5372 | ||
3f8ab7bd | 5373 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5374 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5375 | (Lisp_Object config) |
3f8ab7bd RS |
5376 | { |
5377 | register struct save_window_data *data; | |
5378 | struct Lisp_Vector *saved_windows; | |
5379 | ||
663fbbba | 5380 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5381 | |
5382 | data = (struct save_window_data *) XVECTOR (config); | |
5383 | saved_windows = XVECTOR (data->saved_windows); | |
5384 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5385 | } | |
5386 | ||
a7ca3326 | 5387 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5388 | Sset_window_configuration, 1, 1, 0, |
5389 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5390 | CONFIGURATION must be a value previously returned | |
5391 | by `current-window-configuration' (which see). | |
5392 | If CONFIGURATION was made from a frame that is now deleted, | |
5393 | only frame-independent values can be restored. In this case, | |
5394 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5395 | (Lisp_Object configuration) |
7ab12479 | 5396 | { |
7ab12479 JB |
5397 | register struct save_window_data *data; |
5398 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5399 | Lisp_Object new_current_buffer; |
fd482be5 | 5400 | Lisp_Object frame; |
6198ccd0 | 5401 | Lisp_Object auto_buffer_name; |
44fa5b1e | 5402 | FRAME_PTR f; |
2452438f | 5403 | EMACS_INT old_point = -1; |
7ab12479 | 5404 | |
663fbbba | 5405 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5406 | |
2f83aebe | 5407 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5408 | saved_windows = XVECTOR (data->saved_windows); |
5409 | ||
7ab12479 | 5410 | new_current_buffer = data->current_buffer; |
4b4deea2 | 5411 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
7ab12479 | 5412 | new_current_buffer = Qnil; |
72695e47 | 5413 | else |
73cadfc1 DK |
5414 | { |
5415 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5416 | /* The code further down "preserves point" by saving here PT in |
5417 | old_point and then setting it later back into PT. When the | |
5418 | current-selected-window and the final-selected-window both show | |
5419 | the current buffer, this suffers from the problem that the | |
5420 | current PT is the window-point of the current-selected-window, | |
5421 | while the final PT is the point of the final-selected-window, so | |
5422 | this copy from one PT to the other would end up moving the | |
5423 | window-point of the final-selected-window to the window-point of | |
5424 | the current-selected-window. So we have to be careful which | |
5425 | point of the current-buffer we copy into old_point. */ | |
5426 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5427 | && WINDOWP (selected_window) | |
5428 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5429 | && !EQ (selected_window, data->current_window)) | |
5430 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5431 | else | |
5432 | old_point = PT; | |
73cadfc1 | 5433 | else |
203eb0aa SM |
5434 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5435 | point in new_current_buffer as of the last time this buffer was | |
5436 | used. This can be non-deterministic since it can be changed by | |
5437 | things like jit-lock by mere temporary selection of some random | |
5438 | window that happens to show this buffer. | |
5439 | So if possible we want this arbitrary choice of "which point" to | |
5440 | be the one from the to-be-selected-window so as to prevent this | |
5441 | window's cursor from being copied from another window. */ | |
5442 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5443 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5444 | && !EQ (selected_window, data->current_window)) | |
5445 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5446 | else | |
5447 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5448 | } |
7ab12479 | 5449 | |
fd482be5 JB |
5450 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5451 | f = XFRAME (frame); | |
177c0ea7 | 5452 | |
fd482be5 JB |
5453 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5454 | However, there is other stuff we should still try to do below. */ | |
5455 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5456 | { |
6198ccd0 MR |
5457 | Lisp_Object window; |
5458 | Lisp_Object dead_windows = Qnil; | |
fd482be5 JB |
5459 | register struct window *w; |
5460 | register struct saved_window *p; | |
5500c422 GM |
5461 | struct window *root_window; |
5462 | struct window **leaf_windows; | |
5463 | int n_leaf_windows; | |
71f02bc5 PE |
5464 | ptrdiff_t k; |
5465 | int i, n; | |
fd482be5 JB |
5466 | |
5467 | /* If the frame has been resized since this window configuration was | |
5468 | made, we change the frame to the size specified in the | |
5469 | configuration, restore the configuration, and then resize it | |
5470 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5471 | int previous_frame_lines = FRAME_LINES (f); |
5472 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5473 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5474 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5475 | |
d2b35234 RS |
5476 | /* The mouse highlighting code could get screwed up |
5477 | if it runs during this. */ | |
5478 | BLOCK_INPUT; | |
5479 | ||
b05b4e27 SM |
5480 | if (data->frame_lines != previous_frame_lines |
5481 | || data->frame_cols != previous_frame_cols) | |
5482 | change_frame_size (f, data->frame_lines, | |
5483 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5484 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5485 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5486 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5487 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5488 | make_number (0)); | |
4314246f | 5489 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5490 | if (data->frame_tool_bar_lines |
9ea173e8 | 5491 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5492 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5493 | make_number (0)); | |
4314246f | 5494 | #endif |
217f2871 | 5495 | #endif |
fd482be5 | 5496 | |
a46c0153 RS |
5497 | /* "Swap out" point from the selected window's buffer |
5498 | into the window itself. (Normally the pointm of the selected | |
5499 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5500 | restoring the window contents, and prevent it from |
5501 | being done later on when we select a new window. */ | |
596ae0cf RS |
5502 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5503 | { | |
5504 | w = XWINDOW (selected_window); | |
5505 | set_marker_both (w->pointm, | |
5506 | w->buffer, | |
5507 | BUF_PT (XBUFFER (w->buffer)), | |
5508 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5509 | } | |
5510 | ||
fd482be5 | 5511 | windows_or_buffers_changed++; |
29aeee73 | 5512 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5513 | |
5500c422 | 5514 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5515 | is a serious redisplay flickering problem. What we would |
5500c422 | 5516 | really like to do is to free only those matrices not reused |
9d14503e | 5517 | below. */ |
5500c422 GM |
5518 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5519 | leaf_windows | |
5520 | = (struct window **) alloca (count_windows (root_window) | |
5521 | * sizeof (struct window *)); | |
5522 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5523 | ||
fd482be5 JB |
5524 | /* Kludge Alert! |
5525 | Mark all windows now on frame as "deleted". | |
5526 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5527 | |
fd482be5 JB |
5528 | Save their current buffers in their height fields, since we may |
5529 | need it later, if a buffer saved in the configuration is now | |
5530 | dead. */ | |
fa8a67e6 | 5531 | delete_all_subwindows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5532 | |
eab3844f | 5533 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5534 | { |
5535 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5536 | window = p->window; |
5537 | w = XWINDOW (window); | |
fd482be5 | 5538 | w->next = Qnil; |
7ab12479 | 5539 | |
fd482be5 JB |
5540 | if (!NILP (p->parent)) |
5541 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5542 | XFASTINT (p->parent))->window; | |
5543 | else | |
5544 | w->parent = Qnil; | |
7ab12479 | 5545 | |
fd482be5 | 5546 | if (!NILP (p->prev)) |
7ab12479 | 5547 | { |
fd482be5 JB |
5548 | w->prev = SAVED_WINDOW_N (saved_windows, |
5549 | XFASTINT (p->prev))->window; | |
5550 | XWINDOW (w->prev)->next = p->window; | |
5551 | } | |
5552 | else | |
5553 | { | |
5554 | w->prev = Qnil; | |
5555 | if (!NILP (w->parent)) | |
5556 | { | |
949cf20f | 5557 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5558 | { |
5559 | XWINDOW (w->parent)->vchild = p->window; | |
5560 | XWINDOW (w->parent)->hchild = Qnil; | |
5561 | } | |
5562 | else | |
5563 | { | |
5564 | XWINDOW (w->parent)->hchild = p->window; | |
5565 | XWINDOW (w->parent)->vchild = Qnil; | |
5566 | } | |
5567 | } | |
5568 | } | |
5569 | ||
5570 | /* If we squirreled away the buffer in the window's height, | |
5571 | restore it now. */ | |
949cf20f KS |
5572 | if (BUFFERP (w->total_lines)) |
5573 | w->buffer = w->total_lines; | |
5574 | w->left_col = p->left_col; | |
5575 | w->top_line = p->top_line; | |
5576 | w->total_cols = p->total_cols; | |
5577 | w->total_lines = p->total_lines; | |
496e208e MR |
5578 | w->normal_cols = p->normal_cols; |
5579 | w->normal_lines = p->normal_lines; | |
fd482be5 | 5580 | w->hscroll = p->hscroll; |
ea68264b | 5581 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5582 | w->display_table = p->display_table; |
949cf20f KS |
5583 | w->left_margin_cols = p->left_margin_cols; |
5584 | w->right_margin_cols = p->right_margin_cols; | |
5585 | w->left_fringe_width = p->left_fringe_width; | |
5586 | w->right_fringe_width = p->right_fringe_width; | |
5587 | w->fringes_outside_margins = p->fringes_outside_margins; | |
5588 | w->scroll_bar_width = p->scroll_bar_width; | |
5589 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 5590 | w->dedicated = p->dedicated; |
496e208e MR |
5591 | w->splits = p->splits; |
5592 | w->nest = p->nest; | |
5593 | w->window_parameters = p->window_parameters; | |
d834a2e9 | 5594 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5595 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5596 | |
5597 | /* Reinstall the saved buffer and pointers into it. */ | |
5598 | if (NILP (p->buffer)) | |
6198ccd0 | 5599 | /* An internal window. */ |
fd482be5 | 5600 | w->buffer = p->buffer; |
6198ccd0 MR |
5601 | else if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
5602 | /* If saved buffer is alive, install it. */ | |
5603 | { | |
5604 | w->buffer = p->buffer; | |
5605 | w->start_at_line_beg = p->start_at_line_beg; | |
5606 | set_marker_restricted (w->start, p->start, w->buffer); | |
5607 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
5608 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5609 | p->mark, w->buffer); | |
5610 | ||
5611 | /* As documented in Fcurrent_window_configuration, don't | |
5612 | restore the location of point in the buffer which was | |
5613 | current when the window configuration was recorded. */ | |
5614 | if (!EQ (p->buffer, new_current_buffer) | |
5615 | && XBUFFER (p->buffer) == current_buffer) | |
5616 | Fgoto_char (w->pointm); | |
5617 | } | |
5618 | else if (!NILP (w->buffer) && !NILP (BVAR (XBUFFER (w->buffer), name))) | |
5619 | /* Keep window's old buffer; make sure the markers are | |
5620 | real. */ | |
5621 | { | |
5622 | /* Set window markers at start of visible range. */ | |
5623 | if (XMARKER (w->start)->buffer == 0) | |
5624 | set_marker_restricted (w->start, make_number (0), | |
5625 | w->buffer); | |
5626 | if (XMARKER (w->pointm)->buffer == 0) | |
5627 | set_marker_restricted_both (w->pointm, w->buffer, | |
5628 | BUF_PT (XBUFFER (w->buffer)), | |
5629 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5630 | w->start_at_line_beg = Qt; | |
5631 | } | |
5632 | else if (STRINGP (auto_buffer_name = | |
5633 | Fwindow_parameter (window, Qauto_buffer_name)) | |
5634 | && SCHARS (auto_buffer_name) != 0 | |
5635 | && !NILP (w->buffer = Fget_buffer_create (auto_buffer_name))) | |
5636 | { | |
5637 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5638 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
5639 | w->start_at_line_beg = Qt; | |
5640 | } | |
fd482be5 | 5641 | else |
6198ccd0 | 5642 | /* Window has no live buffer, get one. */ |
fd482be5 | 5643 | { |
6198ccd0 MR |
5644 | /* Get the buffer via other_buffer_safely in order to |
5645 | avoid showing an unimportant buffer and, if necessary, to | |
5646 | recreate *scratch* in the course (part of Juanma's bs-show | |
5647 | scenario from March 2011). */ | |
5648 | w->buffer = other_buffer_safely (Fcurrent_buffer ()); | |
5649 | /* This will set the markers to beginning of visible | |
5650 | range. */ | |
5651 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5652 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
5653 | w->start_at_line_beg = Qt; | |
5654 | if (!NILP (w->dedicated)) | |
5655 | /* Record this window as dead. */ | |
5656 | dead_windows = Fcons (window, dead_windows); | |
5657 | /* Make sure window is no more dedicated. */ | |
5658 | w->dedicated = Qnil; | |
7ab12479 JB |
5659 | } |
5660 | } | |
9ace597f | 5661 | |
fd482be5 | 5662 | FRAME_ROOT_WINDOW (f) = data->root_window; |
a46c0153 RS |
5663 | /* Arrange *not* to restore point in the buffer that was |
5664 | current when the window configuration was saved. */ | |
243a5ce6 RS |
5665 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5666 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5667 | make_number (old_point), |
243a5ce6 | 5668 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5669 | |
6198ccd0 MR |
5670 | /* In the following call to `select-window', prevent "swapping out |
5671 | point" in the old selected window using the buffer that has | |
5672 | been restored into it. We already swapped out that point from | |
5673 | that window's old buffer. */ | |
e6b84b30 | 5674 | select_window (data->current_window, Qnil, 1); |
4b4deea2 | 5675 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5676 | = selected_window; |
7ab12479 | 5677 | |
db269683 | 5678 | if (NILP (data->focus_frame) |
017b2bad | 5679 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5680 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5681 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5682 | |
fd482be5 | 5683 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5684 | if (previous_frame_lines != FRAME_LINES (f) |
5685 | || previous_frame_cols != FRAME_COLS (f)) | |
5686 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5687 | 0, 0, 0); |
e3678b64 | 5688 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5689 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5690 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5691 | make_number (0)); | |
4314246f | 5692 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5693 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5694 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5695 | make_number (0)); | |
4314246f | 5696 | #endif |
217f2871 | 5697 | #endif |
d2b35234 | 5698 | |
5500c422 | 5699 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5700 | for (i = n = 0; i < n_leaf_windows; ++i) |
5701 | { | |
5702 | if (NILP (leaf_windows[i]->buffer)) | |
5703 | { | |
5704 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 5705 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
5706 | && NILP (leaf_windows[i]->vchild)); |
5707 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5708 | } |
5709 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5710 | ++n; | |
5711 | } | |
177c0ea7 | 5712 | |
5500c422 | 5713 | adjust_glyphs (f); |
d2b35234 | 5714 | UNBLOCK_INPUT; |
756b6edc | 5715 | |
6198ccd0 MR |
5716 | /* Scan dead buffer windows. */ |
5717 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5718 | { | |
5719 | window = XCAR (dead_windows); | |
5720 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5721 | delete_deletable_window (window); | |
5722 | } | |
5723 | ||
478292ed RS |
5724 | /* Fselect_window will have made f the selected frame, so we |
5725 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5726 | selected window too, but that doesn't make the call to | |
5727 | Fselect_window above totally superfluous; it still sets f's | |
5728 | selected window. */ | |
5729 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5730 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5731 | |
eeca6f6f | 5732 | run_window_configuration_change_hook (f); |
478292ed | 5733 | } |
bdc727bf JB |
5734 | |
5735 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5736 | Fset_buffer (new_current_buffer); |
bdc727bf | 5737 | |
478292ed | 5738 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5739 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5740 | |
3f8ab7bd | 5741 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5742 | } |
5743 | ||
562dd5e9 | 5744 | |
fa8a67e6 MR |
5745 | /* Delete all subwindows reachable via the next, vchild, and hchild |
5746 | slots of WINDOW. */ | |
fd482be5 | 5747 | void |
fa8a67e6 | 5748 | delete_all_subwindows (Lisp_Object window) |
7ab12479 | 5749 | { |
fa8a67e6 MR |
5750 | register struct window *w; |
5751 | ||
5752 | w = XWINDOW (window); | |
5753 | ||
265a9e55 | 5754 | if (!NILP (w->next)) |
fa8a67e6 MR |
5755 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
5756 | delete_all_subwindows (w->next); | |
605be8af | 5757 | |
949cf20f | 5758 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 5759 | |
fa8a67e6 MR |
5760 | if (!NILP (w->vchild)) |
5761 | { | |
5762 | delete_all_subwindows (w->vchild); | |
5763 | w->vchild = Qnil; | |
5764 | } | |
5765 | else if (!NILP (w->hchild)) | |
5766 | { | |
5767 | delete_all_subwindows (w->hchild); | |
5768 | w->hchild = Qnil; | |
5769 | } | |
5770 | else if (!NILP (w->buffer)) | |
5771 | { | |
5772 | unshow_buffer (w); | |
5773 | unchain_marker (XMARKER (w->pointm)); | |
5774 | unchain_marker (XMARKER (w->start)); | |
5775 | w->buffer = Qnil; | |
5776 | } | |
acf70840 GM |
5777 | |
5778 | Vwindow_list = Qnil; | |
7ab12479 JB |
5779 | } |
5780 | \f | |
5781 | static int | |
971de7fb | 5782 | count_windows (register struct window *window) |
7ab12479 JB |
5783 | { |
5784 | register int count = 1; | |
265a9e55 | 5785 | if (!NILP (window->next)) |
7ab12479 | 5786 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5787 | if (!NILP (window->vchild)) |
7ab12479 | 5788 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5789 | if (!NILP (window->hchild)) |
7ab12479 JB |
5790 | count += count_windows (XWINDOW (window->hchild)); |
5791 | return count; | |
5792 | } | |
5793 | ||
5500c422 | 5794 | |
177c0ea7 | 5795 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5796 | Value is last index + 1. */ |
5500c422 | 5797 | static int |
971de7fb | 5798 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5799 | { |
5800 | while (w) | |
5801 | { | |
5802 | if (!NILP (w->hchild)) | |
5803 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5804 | else if (!NILP (w->vchild)) | |
5805 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5806 | else |
5500c422 GM |
5807 | flat[i++] = w; |
5808 | ||
5809 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5810 | } | |
5811 | ||
5812 | return i; | |
5813 | } | |
5814 | ||
5815 | ||
5816 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5817 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5818 | can be returned. */ | |
5500c422 | 5819 | struct glyph * |
971de7fb | 5820 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5821 | { |
5822 | struct glyph_row *row; | |
5823 | struct glyph *glyph; | |
5824 | ||
5825 | if (w->phys_cursor.vpos >= 0 | |
5826 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5827 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5828 | row->enabled_p) | |
5829 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5830 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5831 | else | |
5832 | glyph = NULL; | |
5833 | ||
5834 | return glyph; | |
5835 | } | |
5836 | ||
5837 | ||
7ab12479 | 5838 | static int |
971de7fb | 5839 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
5840 | { |
5841 | register struct saved_window *p; | |
5842 | register struct window *w; | |
5843 | register Lisp_Object tem; | |
5844 | ||
265a9e55 | 5845 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5846 | { |
5847 | p = SAVED_WINDOW_N (vector, i); | |
5848 | w = XWINDOW (window); | |
5849 | ||
2a1893f4 | 5850 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
5851 | p->window = window; |
5852 | p->buffer = w->buffer; | |
949cf20f KS |
5853 | p->left_col = w->left_col; |
5854 | p->top_line = w->top_line; | |
5855 | p->total_cols = w->total_cols; | |
5856 | p->total_lines = w->total_lines; | |
496e208e MR |
5857 | p->normal_cols = w->normal_cols; |
5858 | p->normal_lines = w->normal_lines; | |
7ab12479 | 5859 | p->hscroll = w->hscroll; |
ea68264b | 5860 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5861 | p->display_table = w->display_table; |
949cf20f KS |
5862 | p->left_margin_cols = w->left_margin_cols; |
5863 | p->right_margin_cols = w->right_margin_cols; | |
5864 | p->left_fringe_width = w->left_fringe_width; | |
5865 | p->right_fringe_width = w->right_fringe_width; | |
5866 | p->fringes_outside_margins = w->fringes_outside_margins; | |
5867 | p->scroll_bar_width = w->scroll_bar_width; | |
5868 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 5869 | p->dedicated = w->dedicated; |
496e208e MR |
5870 | p->splits = w->splits; |
5871 | p->nest = w->nest; | |
496e208e | 5872 | p->window_parameters = w->window_parameters; |
265a9e55 | 5873 | if (!NILP (w->buffer)) |
7ab12479 JB |
5874 | { |
5875 | /* Save w's value of point in the window configuration. | |
5876 | If w is the selected window, then get the value of point | |
5877 | from the buffer; pointm is garbage in the selected window. */ | |
5878 | if (EQ (window, selected_window)) | |
5879 | { | |
5880 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5881 | set_marker_both (p->pointm, w->buffer, |
5882 | BUF_PT (XBUFFER (w->buffer)), | |
5883 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5884 | } |
5885 | else | |
eeb82665 | 5886 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5887 | |
eeb82665 | 5888 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5889 | p->start_at_line_beg = w->start_at_line_beg; |
5890 | ||
4b4deea2 | 5891 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 5892 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5893 | } |
5894 | else | |
5895 | { | |
5896 | p->pointm = Qnil; | |
5897 | p->start = Qnil; | |
5898 | p->mark = Qnil; | |
5899 | p->start_at_line_beg = Qnil; | |
5900 | } | |
5901 | ||
265a9e55 | 5902 | if (NILP (w->parent)) |
7ab12479 JB |
5903 | p->parent = Qnil; |
5904 | else | |
5905 | p->parent = XWINDOW (w->parent)->temslot; | |
5906 | ||
265a9e55 | 5907 | if (NILP (w->prev)) |
7ab12479 JB |
5908 | p->prev = Qnil; |
5909 | else | |
5910 | p->prev = XWINDOW (w->prev)->temslot; | |
5911 | ||
265a9e55 | 5912 | if (!NILP (w->vchild)) |
7ab12479 | 5913 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5914 | if (!NILP (w->hchild)) |
7ab12479 JB |
5915 | i = save_window_save (w->hchild, vector, i); |
5916 | } | |
5917 | ||
5918 | return i; | |
5919 | } | |
5920 | ||
a7ca3326 | 5921 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5922 | Scurrent_window_configuration, 0, 1, 0, |
5923 | doc: /* Return an object representing the current window configuration of FRAME. | |
5924 | If FRAME is nil or omitted, use the selected frame. | |
5925 | This describes the number of windows, their sizes and current buffers, | |
5926 | and for each displayed buffer, where display starts, and the positions of | |
5927 | point and mark. An exception is made for point in the current buffer: | |
5928 | its value is -not- saved. | |
5929 | This also records the currently selected frame, and FRAME's focus | |
5930 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 5931 | (Lisp_Object frame) |
7ab12479 JB |
5932 | { |
5933 | register Lisp_Object tem; | |
5934 | register int n_windows; | |
5935 | register struct save_window_data *data; | |
5936 | register int i; | |
44fa5b1e | 5937 | FRAME_PTR f; |
43bad991 | 5938 | |
44fa5b1e | 5939 | if (NILP (frame)) |
1ae1a37d | 5940 | frame = selected_frame; |
b7826503 | 5941 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 5942 | f = XFRAME (frame); |
7ab12479 | 5943 | |
44fa5b1e | 5944 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
5945 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
5946 | PVEC_WINDOW_CONFIGURATION); | |
5947 | ||
5948 | data->frame_cols = FRAME_COLS (f); | |
5949 | data->frame_lines = FRAME_LINES (f); | |
5950 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
5951 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 5952 | data->selected_frame = selected_frame; |
44fa5b1e | 5953 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5954 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 5955 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 5956 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 5957 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5958 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
5959 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5960 | data->saved_windows = tem; | |
5961 | for (i = 0; i < n_windows; i++) | |
5962 | XVECTOR (tem)->contents[i] | |
8a450f0a | 5963 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 5964 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5965 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5966 | return (tem); |
5967 | } | |
5500c422 GM |
5968 | \f |
5969 | /*********************************************************************** | |
5970 | Marginal Areas | |
5971 | ***********************************************************************/ | |
5972 | ||
5973 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5974 | 2, 3, 0, |
fdb82f93 | 5975 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
5976 | If WINDOW is nil, set margins of the currently selected window. |
5977 | Second arg LEFT-WIDTH specifies the number of character cells to | |
5978 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
5979 | does the same for the right marginal area. A nil width parameter | |
5980 | means no margin. */) | |
5842a27b | 5981 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
5982 | { |
5983 | struct window *w = decode_window (window); | |
5500c422 | 5984 | |
6b61353c KH |
5985 | /* Translate negative or zero widths to nil. |
5986 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 5987 | |
c10ce82e | 5988 | if (!NILP (left_width)) |
6b61353c | 5989 | { |
c10ce82e JB |
5990 | CHECK_NUMBER (left_width); |
5991 | if (XINT (left_width) <= 0) | |
5992 | left_width = Qnil; | |
6b61353c | 5993 | } |
5500c422 | 5994 | |
c10ce82e | 5995 | if (!NILP (right_width)) |
6b61353c | 5996 | { |
c10ce82e JB |
5997 | CHECK_NUMBER (right_width); |
5998 | if (XINT (right_width) <= 0) | |
5999 | right_width = Qnil; | |
6b61353c | 6000 | } |
5500c422 | 6001 | |
c10ce82e JB |
6002 | if (!EQ (w->left_margin_cols, left_width) |
6003 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6004 | { |
c10ce82e JB |
6005 | w->left_margin_cols = left_width; |
6006 | w->right_margin_cols = right_width; | |
949cf20f KS |
6007 | |
6008 | adjust_window_margins (w); | |
6009 | ||
6010 | ++windows_or_buffers_changed; | |
6011 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6012 | } | |
5500c422 | 6013 | |
5500c422 GM |
6014 | return Qnil; |
6015 | } | |
6016 | ||
6017 | ||
6018 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6019 | 0, 1, 0, | |
fdb82f93 PJ |
6020 | doc: /* Get width of marginal areas of window WINDOW. |
6021 | If WINDOW is omitted or nil, use the currently selected window. | |
6022 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6023 | If a marginal area does not exist, its width will be returned | |
6024 | as nil. */) | |
5842a27b | 6025 | (Lisp_Object window) |
5500c422 GM |
6026 | { |
6027 | struct window *w = decode_window (window); | |
949cf20f KS |
6028 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6029 | } | |
6030 | ||
6031 | ||
6032 | \f | |
6033 | /*********************************************************************** | |
6034 | Fringes | |
6035 | ***********************************************************************/ | |
6036 | ||
a7ca3326 | 6037 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6038 | 2, 4, 0, |
6b61353c KH |
6039 | doc: /* Set the fringe widths of window WINDOW. |
6040 | If WINDOW is nil, set the fringe widths of the currently selected | |
6041 | window. | |
6042 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6043 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6044 | fringe width. If a fringe width arg is nil, that means to use the | |
6045 | frame's default fringe width. Default fringe widths can be set with | |
6046 | the command `set-fringe-style'. | |
6047 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6048 | outside of the display margins. By default, fringes are drawn between | |
6049 | display marginal areas and the text area. */) | |
5842a27b | 6050 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6051 | { |
6052 | struct window *w = decode_window (window); | |
6053 | ||
c10ce82e JB |
6054 | if (!NILP (left_width)) |
6055 | CHECK_NATNUM (left_width); | |
6056 | if (!NILP (right_width)) | |
6057 | CHECK_NATNUM (right_width); | |
5a857365 | 6058 | |
017e297e | 6059 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6060 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6061 | && (!EQ (w->left_fringe_width, left_width) | |
6062 | || !EQ (w->right_fringe_width, right_width) | |
6063 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6064 | { |
c10ce82e JB |
6065 | w->left_fringe_width = left_width; |
6066 | w->right_fringe_width = right_width; | |
949cf20f KS |
6067 | w->fringes_outside_margins = outside_margins; |
6068 | ||
6069 | adjust_window_margins (w); | |
6070 | ||
6071 | clear_glyph_matrix (w->current_matrix); | |
6072 | w->window_end_valid = Qnil; | |
6073 | ||
6074 | ++windows_or_buffers_changed; | |
6075 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6076 | } | |
6077 | ||
6078 | return Qnil; | |
6079 | } | |
6080 | ||
6081 | ||
6082 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6083 | 0, 1, 0, | |
6084 | doc: /* Get width of fringes of window WINDOW. | |
6085 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6086 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6087 | (Lisp_Object window) |
949cf20f KS |
6088 | { |
6089 | struct window *w = decode_window (window); | |
d46c6df5 | 6090 | |
949cf20f KS |
6091 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6092 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6093 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6094 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6095 | } |
6096 | ||
6097 | ||
6098 | \f | |
6099 | /*********************************************************************** | |
6100 | Scroll bars | |
6101 | ***********************************************************************/ | |
6102 | ||
a7ca3326 | 6103 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6104 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f KS |
6105 | doc: /* Set width and type of scroll bars of window WINDOW. |
6106 | If window is nil, set scroll bars of the currently selected window. | |
6107 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6108 | this is automatically adjusted to a multiple of the frame column width. | |
6109 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6110 | bar: left, right, or nil. | |
6b61353c | 6111 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6112 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6113 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6114 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6115 | { |
6116 | struct window *w = decode_window (window); | |
6117 | ||
6118 | if (!NILP (width)) | |
0f8fe9a2 SM |
6119 | { |
6120 | CHECK_NATNUM (width); | |
949cf20f | 6121 | |
0f8fe9a2 SM |
6122 | if (XINT (width) == 0) |
6123 | vertical_type = Qnil; | |
6124 | } | |
949cf20f | 6125 | |
413a79ad | 6126 | if (!(NILP (vertical_type) |
0cc1039f | 6127 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6128 | || EQ (vertical_type, Qright) |
6129 | || EQ (vertical_type, Qt))) | |
6130 | error ("Invalid type of vertical scroll bar"); | |
6131 | ||
949cf20f KS |
6132 | if (!EQ (w->scroll_bar_width, width) |
6133 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6134 | { | |
6135 | w->scroll_bar_width = width; | |
6136 | w->vertical_scroll_bar_type = vertical_type; | |
6137 | ||
6138 | adjust_window_margins (w); | |
6139 | ||
6140 | clear_glyph_matrix (w->current_matrix); | |
6141 | w->window_end_valid = Qnil; | |
6142 | ||
6143 | ++windows_or_buffers_changed; | |
6144 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6145 | } | |
6146 | ||
6147 | return Qnil; | |
6148 | } | |
6149 | ||
6150 | ||
6151 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6152 | 0, 1, 0, | |
6153 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6154 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6155 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6156 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6157 | value. */) | |
5842a27b | 6158 | (Lisp_Object window) |
949cf20f KS |
6159 | { |
6160 | struct window *w = decode_window (window); | |
6161 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6162 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6163 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6164 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6165 | Fcons (w->vertical_scroll_bar_type, | |
6166 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6167 | } |
6168 | ||
6169 | ||
7ab12479 | 6170 | \f |
5500c422 GM |
6171 | /*********************************************************************** |
6172 | Smooth scrolling | |
6173 | ***********************************************************************/ | |
6174 | ||
0cc1039f | 6175 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6176 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6177 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6178 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6179 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6180 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6181 | { |
47004952 | 6182 | Lisp_Object result; |
5500c422 GM |
6183 | struct frame *f; |
6184 | struct window *w; | |
177c0ea7 | 6185 | |
5500c422 GM |
6186 | if (NILP (window)) |
6187 | window = selected_window; | |
47004952 | 6188 | else |
b7826503 | 6189 | CHECK_WINDOW (window); |
5500c422 GM |
6190 | w = XWINDOW (window); |
6191 | f = XFRAME (w->frame); | |
177c0ea7 | 6192 | |
5500c422 | 6193 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6194 | result = (NILP (pixels_p) |
6195 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6196 | : make_number (-w->vscroll)); | |
5500c422 | 6197 | else |
47004952 GM |
6198 | result = make_number (0); |
6199 | return result; | |
5500c422 GM |
6200 | } |
6201 | ||
6202 | ||
6203 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6204 | 2, 3, 0, |
fdb82f93 | 6205 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6206 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6207 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6208 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6209 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6210 | corresponds to an integral number of pixels. The return value is the | |
6211 | result of this rounding. | |
6212 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6213 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6214 | { |
6215 | struct window *w; | |
6216 | struct frame *f; | |
177c0ea7 | 6217 | |
5500c422 GM |
6218 | if (NILP (window)) |
6219 | window = selected_window; | |
47004952 | 6220 | else |
b7826503 PJ |
6221 | CHECK_WINDOW (window); |
6222 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6223 | |
5500c422 GM |
6224 | w = XWINDOW (window); |
6225 | f = XFRAME (w->frame); | |
6226 | ||
6227 | if (FRAME_WINDOW_P (f)) | |
6228 | { | |
6229 | int old_dy = w->vscroll; | |
177c0ea7 | 6230 | |
0cc1039f KS |
6231 | w->vscroll = - (NILP (pixels_p) |
6232 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6233 | : XFLOATINT (vscroll)); | |
47004952 | 6234 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6235 | |
e56263e5 KS |
6236 | if (w->vscroll != old_dy) |
6237 | { | |
6238 | /* Adjust glyph matrix of the frame if the virtual display | |
6239 | area becomes larger than before. */ | |
6240 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6241 | adjust_glyphs (f); | |
177c0ea7 | 6242 | |
e56263e5 KS |
6243 | /* Prevent redisplay shortcuts. */ |
6244 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6245 | } | |
5500c422 | 6246 | } |
177c0ea7 | 6247 | |
0cc1039f | 6248 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6249 | } |
177c0ea7 | 6250 | |
7bbb5782 GM |
6251 | \f |
6252 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6253 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6254 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6255 | |
2f7c71a1 AS |
6256 | static void |
6257 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6258 | void *user_data) | |
7bbb5782 | 6259 | { |
56f2de10 | 6260 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6261 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6262 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6263 | } |
6264 | ||
6265 | ||
6266 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6267 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6268 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6269 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6270 | |
67492200 | 6271 | static int |
971de7fb | 6272 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6273 | { |
67492200 | 6274 | int cont; |
177c0ea7 | 6275 | |
67492200 | 6276 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6277 | { |
6278 | if (!NILP (w->hchild)) | |
f95464e4 | 6279 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6280 | else if (!NILP (w->vchild)) |
f95464e4 | 6281 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6282 | else |
0f532a9a | 6283 | cont = fn (w, user_data); |
177c0ea7 | 6284 | |
7bbb5782 GM |
6285 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6286 | } | |
67492200 GM |
6287 | |
6288 | return cont; | |
7bbb5782 GM |
6289 | } |
6290 | ||
6291 | ||
6d194a45 | 6292 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6293 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6294 | the window start. */ |
6295 | ||
67492200 | 6296 | static int |
971de7fb | 6297 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6298 | { |
08c1d235 SM |
6299 | if (MINI_WINDOW_P (w) |
6300 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6301 | && (w == XWINDOW (selected_window) | |
6302 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6303 | && ! NILP (Vminibuf_scroll_window) | |
6304 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6305 | freeze_p = NULL; |
177c0ea7 | 6306 | |
f95464e4 | 6307 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6308 | return 1; |
7bbb5782 GM |
6309 | } |
6310 | ||
6311 | ||
6312 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6313 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6314 | means freeze the window start. */ | |
6315 | ||
6316 | void | |
971de7fb | 6317 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6318 | { |
cbccabec | 6319 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6320 | } |
5500c422 GM |
6321 | |
6322 | \f | |
6323 | /*********************************************************************** | |
6324 | Initialization | |
6325 | ***********************************************************************/ | |
6326 | ||
6198ccd0 MR |
6327 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6328 | describe the same state of affairs. This is used by Fequal. | |
6329 | ||
6330 | ignore_positions non-zero means ignore non-matching scroll positions | |
6331 | and the like. | |
6332 | ||
6333 | This ignores a couple of things like the dedicatedness status of | |
6334 | window, splits, nest and the like. This might have to be fixed. */ | |
cbff28e8 RS |
6335 | |
6336 | int | |
6198ccd0 | 6337 | compare_window_configurations (Lisp_Object configuration1, Lisp_Object configuration2, int ignore_positions) |
cbff28e8 RS |
6338 | { |
6339 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6340 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6341 | ptrdiff_t i; |
cbff28e8 | 6342 | |
6198ccd0 MR |
6343 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6344 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6345 | ||
6346 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6347 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6348 | sws1 = XVECTOR (d1->saved_windows); | |
6349 | sws2 = XVECTOR (d2->saved_windows); | |
6350 | ||
6351 | /* Frame settings must match. */ | |
6352 | if (d1->frame_cols != d2->frame_cols | |
6353 | || d1->frame_lines != d2->frame_lines | |
6354 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6355 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6356 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6357 | || (!ignore_positions | |
6358 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6359 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6360 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6361 | /* Verify that the two configurations have the same number of windows. */ | |
6362 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6363 | return 0; |
cbff28e8 | 6364 | |
6198ccd0 | 6365 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6366 | { |
6198ccd0 | 6367 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6368 | |
6198ccd0 MR |
6369 | sw1 = SAVED_WINDOW_N (sws1, i); |
6370 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6371 | ||
6372 | if ( | |
6373 | /* The "current" windows in the two configurations must | |
6374 | correspond to each other. */ | |
6375 | EQ (d1->current_window, sw1->window) | |
6376 | != EQ (d2->current_window, sw2->window) | |
6377 | /* Windows' buffers must match. */ | |
6378 | || !EQ (sw1->buffer, sw2->buffer) | |
6379 | || !EQ (sw1->left_col, sw2->left_col) | |
6380 | || !EQ (sw1->top_line, sw2->top_line) | |
6381 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6382 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6383 | || !EQ (sw1->display_table, sw2->display_table) | |
6384 | /* The next two disjuncts check the window structure for | |
6385 | equality. */ | |
6386 | || !EQ (sw1->parent, sw2->parent) | |
6387 | || !EQ (sw1->prev, sw2->prev) | |
6388 | || (!ignore_positions | |
6389 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6390 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6391 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6392 | || NILP (Fequal (sw1->start, sw2->start)) | |
6393 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6394 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6395 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6396 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6397 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6398 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6399 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6400 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6401 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6402 | return 0; |
cbff28e8 RS |
6403 | } |
6404 | ||
6405 | return 1; | |
6406 | } | |
2f8274be RS |
6407 | |
6408 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6409 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6410 | doc: /* Compare two window configurations as regards the structure of windows. |
6411 | This function ignores details such as the values of point and mark | |
6412 | and scrolling positions. */) | |
5842a27b | 6413 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6414 | { |
6415 | if (compare_window_configurations (x, y, 1)) | |
6416 | return Qt; | |
6417 | return Qnil; | |
6418 | } | |
cbff28e8 | 6419 | \f |
dfcf069d | 6420 | void |
971de7fb | 6421 | init_window_once (void) |
7ab12479 | 6422 | { |
3224dac1 | 6423 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6424 | XSETFRAME (selected_frame, f); |
6425 | Vterminal_frame = selected_frame; | |
6426 | minibuf_window = f->minibuffer_window; | |
6427 | selected_window = f->selected_window; | |
6428 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6429 | |
6430 | window_initialized = 1; | |
7ab12479 JB |
6431 | } |
6432 | ||
67492200 | 6433 | void |
971de7fb | 6434 | init_window (void) |
67492200 GM |
6435 | { |
6436 | Vwindow_list = Qnil; | |
6437 | } | |
6438 | ||
dfcf069d | 6439 | void |
971de7fb | 6440 | syms_of_window (void) |
7ab12479 | 6441 | { |
cd3520a4 JB |
6442 | DEFSYM (Qscroll_up, "scroll-up"); |
6443 | DEFSYM (Qscroll_down, "scroll-down"); | |
6444 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6445 | |
6446 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6447 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6448 | ||
cd3520a4 JB |
6449 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6450 | DEFSYM (Qwindowp, "windowp"); | |
6451 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6452 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
6453 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); | |
6454 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6455 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6456 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6457 | DEFSYM (Qsafe, "safe"); |
6458 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6459 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6460 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6461 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
6462 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); | |
6463 | DEFSYM (Qabove, "above"); | |
6464 | DEFSYM (Qbelow, "below"); | |
6465 | DEFSYM (Qauto_buffer_name, "auto-buffer-name"); | |
b9e809c2 | 6466 | |
67492200 | 6467 | staticpro (&Vwindow_list); |
8bfb170b KS |
6468 | |
6469 | minibuf_selected_window = Qnil; | |
3dbab091 | 6470 | staticpro (&minibuf_selected_window); |
67492200 | 6471 | |
c876b227 | 6472 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6473 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6474 | window_scroll_preserve_hpos = -1; |
6475 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6476 | |
29208e82 | 6477 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6478 | doc: /* Non-nil means call as function to display a help buffer. |
6479 | The function is called with one argument, the buffer to be displayed. | |
6480 | Used by `with-output-to-temp-buffer'. | |
6481 | If this function is used, then it must do the entire job of showing | |
6482 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
6483 | Vtemp_buffer_show_function = Qnil; |
6484 | ||
e10ac9f1 MR |
6485 | DEFVAR_LISP ("temp-buffer-show-specifiers", Vtemp_buffer_show_specifiers, |
6486 | doc: /* Buffer display specifiers used by `with-output-to-temp-buffer'. | |
6487 | These specifiers are passed by `with-output-to-temp-buffer' as second | |
6488 | argument to `display-buffer'. Applications should only let-bind this | |
6489 | around a call to `with-output-to-temp-buffer'. | |
6490 | ||
6491 | For a description of buffer display specifiers see the variable | |
6492 | `display-buffer-alist'. */); | |
6493 | Vtemp_buffer_show_specifiers = Qnil; | |
6494 | ||
29208e82 | 6495 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6496 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6497 | Vminibuf_scroll_window = Qnil; |
6498 | ||
29208e82 | 6499 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6500 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6501 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6502 | is displayed in the `mode-line' face. */); | |
6503 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6504 | |
29208e82 | 6505 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6506 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6507 | Vother_window_scroll_buffer = Qnil; |
6508 | ||
29208e82 | 6509 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6510 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6511 | auto_window_vscroll_p = 1; |
6512 | ||
29208e82 | 6513 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6514 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6515 | next_screen_context_lines = 2; |
6516 | ||
5500c422 | 6517 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6518 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6519 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6520 | A value of nil means point does not keep its screen position except |
6521 | at the scroll margin or window boundary respectively. | |
6522 | A value of t means point keeps its screen position if the scroll | |
6523 | command moved it vertically out of the window, e.g. when scrolling | |
6524 | by full screens. | |
9013a7f8 | 6525 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6526 | Scroll commands should have the `scroll-command' property |
6527 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6528 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6529 | |
29208e82 | 6530 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6531 | doc: /* Type of marker to use for `window-point'. */); |
6532 | Vwindow_point_insertion_type = Qnil; | |
6533 | ||
543f5fb1 | 6534 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6535 | Vwindow_configuration_change_hook, |
fdb82f93 | 6536 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6537 | The buffer-local part is run once per window, with the relevant window |
6538 | selected; while the global part is run only once for the modified frame, | |
6539 | with the relevant frame selected. */); | |
543f5fb1 RS |
6540 | Vwindow_configuration_change_hook = Qnil; |
6541 | ||
29208e82 | 6542 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
666e158e | 6543 | doc: /* If non-nil, then the `recenter' command with a nil argument |
6e6e5760 | 6544 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
6545 | frame to be redrawn only if it is a tty frame. */); |
6546 | Vrecenter_redisplay = Qtty; | |
6547 | ||
1a13852e MR |
6548 | DEFVAR_LISP ("window-splits", Vwindow_splits, |
6549 | doc: /* Non-nil means splitting windows is handled specially. | |
6550 | If this variable is nil, splitting a window gets the entire screen space | |
6551 | for displaying the new window from the window to split. If this | |
6552 | variable is non-nil, splitting a window may resize all windows in the | |
6553 | same combination. This also allows to split a window that is otherwise | |
6554 | too small or of fixed size. | |
6555 | ||
6556 | The value of this variable is also assigned to the split status of the | |
6557 | new window and, provided the old and new window form a new combination, | |
6558 | to the window that was split as well. The split status of a window can | |
6559 | be retrieved with the function `window-splits' and altered by the | |
6560 | function `set-window-splits'. | |
6561 | ||
6562 | If the value of the variable `window-nest' is non-nil, the space for the | |
6563 | new window is exclusively taken from the window that shall be split, but | |
6564 | the split status of the window that is split as well as that of the new | |
6565 | window are still set to the value of this variable. */); | |
6566 | Vwindow_splits = Qnil; | |
6567 | ||
6568 | DEFVAR_LISP ("window-nest", Vwindow_nest, | |
6569 | doc: /* Non-nil means splitting a window makes a new parent window. | |
6570 | If this variable is nil, splitting a window will create a new parent | |
6571 | window only if the window has no parent window or the window shall | |
6572 | become a combination orthogonal to the one it it is part of. | |
6573 | ||
6574 | If this variable is non-nil, splitting a window always creates a new | |
6575 | parent window. If all splits behave this way, each frame's window tree | |
6576 | is a binary tree and every window but the frame's root window has | |
6577 | exactly one sibling. | |
6578 | ||
6579 | The value of this variable is also assigned to the nest status of the | |
6580 | new parent window. The nest status of a window can be retrieved via the | |
6581 | function `window-nest' and altered by the function `set-window-nest'. */); | |
6582 | Vwindow_nest = Qnil; | |
666e158e | 6583 | |
7ab12479 JB |
6584 | defsubr (&Sselected_window); |
6585 | defsubr (&Sminibuffer_window); | |
6586 | defsubr (&Swindow_minibuffer_p); | |
6587 | defsubr (&Swindowp); | |
806b4d9b | 6588 | defsubr (&Swindow_live_p); |
727e958e MR |
6589 | defsubr (&Swindow_frame); |
6590 | defsubr (&Sframe_root_window); | |
6591 | defsubr (&Sframe_first_window); | |
6592 | defsubr (&Sframe_selected_window); | |
6593 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6594 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6595 | defsubr (&Swindow_line_height); |
7ab12479 | 6596 | defsubr (&Swindow_buffer); |
bf60a96b | 6597 | defsubr (&Swindow_parent); |
d68443dc MR |
6598 | defsubr (&Swindow_top_child); |
6599 | defsubr (&Swindow_left_child); | |
6600 | defsubr (&Swindow_next_sibling); | |
6601 | defsubr (&Swindow_prev_sibling); | |
496e208e MR |
6602 | defsubr (&Swindow_splits); |
6603 | defsubr (&Sset_window_splits); | |
6604 | defsubr (&Swindow_nest); | |
6605 | defsubr (&Sset_window_nest); | |
abde8f8c MR |
6606 | defsubr (&Swindow_use_time); |
6607 | defsubr (&Swindow_top_line); | |
6608 | defsubr (&Swindow_left_column); | |
6609 | defsubr (&Swindow_total_size); | |
496e208e MR |
6610 | defsubr (&Swindow_normal_size); |
6611 | defsubr (&Swindow_new_total); | |
6612 | defsubr (&Swindow_new_normal); | |
6613 | defsubr (&Sset_window_new_total); | |
6614 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6615 | defsubr (&Swindow_resize_apply); |
abde8f8c | 6616 | defsubr (&Swindow_body_size); |
7ab12479 JB |
6617 | defsubr (&Swindow_hscroll); |
6618 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6619 | defsubr (&Swindow_redisplay_end_trigger); |
6620 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6621 | defsubr (&Swindow_edges); |
c99a9eb3 | 6622 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6623 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6624 | defsubr (&Swindow_inside_edges); |
6625 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6626 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6627 | defsubr (&Scoordinates_in_window_p); |
6628 | defsubr (&Swindow_at); | |
7ab12479 JB |
6629 | defsubr (&Swindow_point); |
6630 | defsubr (&Swindow_start); | |
6631 | defsubr (&Swindow_end); | |
6632 | defsubr (&Sset_window_point); | |
6633 | defsubr (&Sset_window_start); | |
6634 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6635 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6636 | defsubr (&Swindow_display_table); |
6637 | defsubr (&Sset_window_display_table); | |
6638 | defsubr (&Snext_window); | |
6639 | defsubr (&Sprevious_window); | |
7ab12479 | 6640 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6641 | defsubr (&Sdelete_other_windows_internal); |
6642 | defsubr (&Sdelete_window_internal); | |
6643 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6644 | defsubr (&Sset_window_buffer); |
1a13852e | 6645 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6646 | defsubr (&Sselect_window); |
6b61353c | 6647 | defsubr (&Sforce_window_update); |
3e21b6a7 | 6648 | defsubr (&Stemp_output_buffer_show); |
1a13852e | 6649 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6650 | defsubr (&Sscroll_up); |
6651 | defsubr (&Sscroll_down); | |
6652 | defsubr (&Sscroll_left); | |
6653 | defsubr (&Sscroll_right); | |
ccd0664b | 6654 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6655 | defsubr (&Sscroll_other_window); |
fa832261 | 6656 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6657 | defsubr (&Srecenter); |
81fe0836 | 6658 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6659 | defsubr (&Smove_to_window_line); |
6660 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6661 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6662 | defsubr (&Sset_window_configuration); |
6663 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6664 | defsubr (&Sset_window_margins); |
6665 | defsubr (&Swindow_margins); | |
949cf20f KS |
6666 | defsubr (&Sset_window_fringes); |
6667 | defsubr (&Swindow_fringes); | |
6668 | defsubr (&Sset_window_scroll_bars); | |
6669 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6670 | defsubr (&Swindow_vscroll); |
6671 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6672 | defsubr (&Scompare_window_configurations); |
67492200 | 6673 | defsubr (&Swindow_list); |
abde8f8c | 6674 | defsubr (&Swindow_list_1); |
496e208e MR |
6675 | defsubr (&Swindow_prev_buffers); |
6676 | defsubr (&Sset_window_prev_buffers); | |
6677 | defsubr (&Swindow_next_buffers); | |
6678 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6679 | defsubr (&Swindow_parameters); |
6680 | defsubr (&Swindow_parameter); | |
6681 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6682 | } |
6683 | ||
dfcf069d | 6684 | void |
971de7fb | 6685 | keys_of_window (void) |
7ab12479 | 6686 | { |
7ab12479 JB |
6687 | initial_define_key (control_x_map, '<', "scroll-left"); |
6688 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6689 | ||
32129746 | 6690 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6691 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6692 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6693 | } |