Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
b0b7ed0e | 3 | Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000, 2001 |
6529ed87 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1113d9db | 10 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
11 | any later version. |
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 | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 22 | |
18160b98 | 23 | #include <config.h> |
7ab12479 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
3e4731a3 | 26 | #include "keyboard.h" |
e35f6ff7 | 27 | #include "keymap.h" |
44fa5b1e | 28 | #include "frame.h" |
7ab12479 JB |
29 | #include "window.h" |
30 | #include "commands.h" | |
31 | #include "indent.h" | |
32 | #include "termchar.h" | |
33 | #include "disptab.h" | |
dfcf069d | 34 | #include "dispextern.h" |
5500c422 GM |
35 | #include "blockinput.h" |
36 | #include "intervals.h" | |
37 | ||
6d55d620 | 38 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 39 | #include "xterm.h" |
5500c422 | 40 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
41 | #ifdef WINDOWSNT |
42 | #include "w32term.h" | |
43 | #endif | |
1e3c8885 EZ |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #endif | |
1a578e9b AC |
47 | #ifdef macintosh |
48 | #include "macterm.h" | |
49 | #endif | |
5500c422 | 50 | |
7442878f GM |
51 | /* Values returned from coordinates_in_window. */ |
52 | ||
53 | enum window_part | |
54 | { | |
55 | ON_NOTHING, | |
56 | ON_TEXT, | |
57 | ON_MODE_LINE, | |
58 | ON_VERTICAL_BORDER, | |
59 | ON_HEADER_LINE, | |
60 | ON_LEFT_FRINGE, | |
61 | ON_RIGHT_FRINGE | |
62 | }; | |
63 | ||
5500c422 | 64 | |
3f8ab7bd | 65 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
90647b07 | 66 | Lisp_Object Qwindow_size_fixed; |
233a4a2c | 67 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 68 | |
521b203e | 69 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 70 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 71 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
72 | static int count_windows P_ ((struct window *)); |
73 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
74 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
75 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
76 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 77 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 78 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 79 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 80 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 81 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
86c8e823 | 82 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 83 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 84 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
85 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
86 | Lisp_Object)); | |
67492200 GM |
87 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
88 | Lisp_Object, int)); | |
89 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
90 | Lisp_Object *)); | |
f95464e4 GM |
91 | static int foreach_window_1 P_ ((struct window *, |
92 | int (* fn) (struct window *, void *), | |
93 | void *)); | |
cd2904bd | 94 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 95 | |
b0b7ed0e GM |
96 | /* The value of `window-size-fixed'. */ |
97 | ||
98 | int window_size_fixed; | |
99 | ||
7ab12479 JB |
100 | /* This is the window in which the terminal's cursor should |
101 | be left when nothing is being done with it. This must | |
102 | always be a leaf window, and its buffer is selected by | |
103 | the top level editing loop at the end of each command. | |
104 | ||
105 | This value is always the same as | |
44fa5b1e | 106 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
107 | |
108 | Lisp_Object selected_window; | |
109 | ||
67492200 GM |
110 | /* A list of all windows for use by next_window and Fwindow_list. |
111 | Functions creating or deleting windows should invalidate this cache | |
112 | by setting it to nil. */ | |
113 | ||
114 | Lisp_Object Vwindow_list; | |
115 | ||
5500c422 GM |
116 | /* The mini-buffer window of the selected frame. |
117 | Note that you cannot test for mini-bufferness of an arbitrary window | |
118 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 119 | the selected window. */ |
5500c422 | 120 | |
7ab12479 JB |
121 | Lisp_Object minibuf_window; |
122 | ||
123 | /* Non-nil means it is the window for C-M-v to scroll | |
5500c422 GM |
124 | when the mini-buffer is selected. */ |
125 | ||
7ab12479 JB |
126 | Lisp_Object Vminibuf_scroll_window; |
127 | ||
128 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 129 | |
7ab12479 JB |
130 | Lisp_Object Vother_window_scroll_buffer; |
131 | ||
7ab12479 | 132 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 133 | |
7ab12479 JB |
134 | Lisp_Object Vtemp_buffer_show_function; |
135 | ||
136 | /* If a window gets smaller than either of these, it is removed. */ | |
5500c422 | 137 | |
7ab12479 JB |
138 | int window_min_height; |
139 | int window_min_width; | |
140 | ||
141 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 142 | |
7ab12479 JB |
143 | int pop_up_windows; |
144 | ||
44fa5b1e | 145 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 146 | |
44fa5b1e | 147 | int pop_up_frames; |
7ab12479 | 148 | |
9c3da604 GM |
149 | /* Nonzero means reuse existing frames for displaying buffers. */ |
150 | ||
151 | int display_buffer_reuse_frames; | |
152 | ||
7ab12479 | 153 | /* Non-nil means use this function instead of default */ |
5500c422 | 154 | |
44fa5b1e | 155 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
156 | |
157 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 158 | |
7ab12479 JB |
159 | Lisp_Object Vdisplay_buffer_function; |
160 | ||
6529ed87 GM |
161 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
162 | ||
163 | Lisp_Object Veven_window_heights; | |
164 | ||
a90712c2 | 165 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 166 | |
a90712c2 RS |
167 | Lisp_Object Vspecial_display_buffer_names; |
168 | ||
169 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 170 | |
a90712c2 RS |
171 | Lisp_Object Vspecial_display_regexps; |
172 | ||
173 | /* Function to pop up a special frame. */ | |
5500c422 | 174 | |
a90712c2 RS |
175 | Lisp_Object Vspecial_display_function; |
176 | ||
855d8627 | 177 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 178 | |
855d8627 RS |
179 | Lisp_Object Vsame_window_buffer_names; |
180 | ||
181 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 182 | |
855d8627 RS |
183 | Lisp_Object Vsame_window_regexps; |
184 | ||
a58ec57d | 185 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 186 | |
a58ec57d RS |
187 | Lisp_Object Qtemp_buffer_show_hook; |
188 | ||
37962e60 | 189 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 190 | if that window is more than this high. */ |
5500c422 | 191 | |
7ab12479 JB |
192 | int split_height_threshold; |
193 | ||
194 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 195 | |
7ab12479 JB |
196 | int next_screen_context_lines; |
197 | ||
198 | /* Incremented for each window created. */ | |
5500c422 | 199 | |
7ab12479 JB |
200 | static int sequence_number; |
201 | ||
5b03d3c0 | 202 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 203 | |
5b03d3c0 RS |
204 | static int window_initialized; |
205 | ||
543f5fb1 | 206 | /* Hook to run when window config changes. */ |
5500c422 | 207 | |
543f5fb1 RS |
208 | Lisp_Object Qwindow_configuration_change_hook; |
209 | Lisp_Object Vwindow_configuration_change_hook; | |
210 | ||
9317a85d RS |
211 | /* Nonzero means scroll commands try to put point |
212 | at the same screen height as previously. */ | |
9317a85d | 213 | |
5500c422 GM |
214 | Lisp_Object Vscroll_preserve_screen_position; |
215 | ||
216 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 217 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 218 | static int inhibit_frame_unsplittable; |
5500c422 | 219 | #endif /* 0 */ |
7d601aaa | 220 | |
9317a85d RS |
221 | extern int scroll_margin; |
222 | ||
dba06815 | 223 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
224 | \f |
225 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
226 | doc: /* Returns t if OBJECT is a window. */) |
227 | (object) | |
413430c5 | 228 | Lisp_Object object; |
7ab12479 | 229 | { |
413430c5 | 230 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
231 | } |
232 | ||
806b4d9b | 233 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 234 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
235 | (object) |
236 | Lisp_Object object; | |
605be8af | 237 | { |
9e571f49 | 238 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
239 | } |
240 | ||
7ab12479 JB |
241 | Lisp_Object |
242 | make_window () | |
243 | { | |
cffec418 | 244 | Lisp_Object val; |
7ab12479 | 245 | register struct window *p; |
cffec418 | 246 | |
26605be9 | 247 | p = allocate_window (); |
d834a2e9 KH |
248 | XSETFASTINT (p->sequence_number, ++sequence_number); |
249 | XSETFASTINT (p->left, 0); | |
250 | XSETFASTINT (p->top, 0); | |
251 | XSETFASTINT (p->height, 0); | |
252 | XSETFASTINT (p->width, 0); | |
253 | XSETFASTINT (p->hscroll, 0); | |
ea68264b | 254 | XSETFASTINT (p->min_hscroll, 0); |
f984d4fc | 255 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
256 | p->start = Fmake_marker (); |
257 | p->pointm = Fmake_marker (); | |
d834a2e9 | 258 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 259 | p->frame = Qnil; |
7ab12479 JB |
260 | p->display_table = Qnil; |
261 | p->dedicated = Qnil; | |
5500c422 GM |
262 | p->pseudo_window_p = 0; |
263 | bzero (&p->cursor, sizeof (p->cursor)); | |
264 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
265 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
266 | p->desired_matrix = p->current_matrix = 0; | |
267 | p->phys_cursor_type = -1; | |
268 | p->must_be_updated_p = 0; | |
269 | XSETFASTINT (p->window_end_vpos, 0); | |
270 | XSETFASTINT (p->window_end_pos, 0); | |
271 | p->window_end_valid = Qnil; | |
272 | p->vscroll = 0; | |
cffec418 | 273 | XSETWINDOW (val, p); |
5500c422 | 274 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 275 | p->frozen_window_start_p = 0; |
67492200 GM |
276 | |
277 | Vwindow_list = Qnil; | |
7ab12479 JB |
278 | return val; |
279 | } | |
280 | ||
281 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
282 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
283 | () | |
7ab12479 JB |
284 | { |
285 | return selected_window; | |
286 | } | |
287 | ||
83762ba4 | 288 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
289 | doc: /* Return the window used now for minibuffers. |
290 | If the optional argument FRAME is specified, return the minibuffer window | |
291 | used by that frame. */) | |
292 | (frame) | |
83762ba4 | 293 | Lisp_Object frame; |
7ab12479 | 294 | { |
83762ba4 | 295 | if (NILP (frame)) |
1ae1a37d | 296 | frame = selected_frame; |
b7826503 | 297 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 298 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
299 | } |
300 | ||
605be8af | 301 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
fdb82f93 PJ |
302 | doc: /* Returns non-nil if WINDOW is a minibuffer window. */) |
303 | (window) | |
7ab12479 JB |
304 | Lisp_Object window; |
305 | { | |
306 | struct window *w = decode_window (window); | |
53bb6b99 | 307 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
308 | } |
309 | ||
310 | ||
7ab12479 | 311 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 PJ |
312 | Spos_visible_in_window_p, 0, 3, 0, |
313 | doc: /* Return t if position POS is currently on the frame in WINDOW. | |
314 | Return nil if that position is scrolled vertically out of view. | |
315 | If a character is only partially visible, nil is returned, unless the | |
316 | optional argument PARTIALLY is non-nil. | |
317 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. */) | |
318 | (pos, window, partially) | |
5cdb3cf3 | 319 | Lisp_Object pos, window, partially; |
7ab12479 JB |
320 | { |
321 | register struct window *w; | |
7ab12479 JB |
322 | register int posint; |
323 | register struct buffer *buf; | |
9a132b1f GM |
324 | struct text_pos top; |
325 | Lisp_Object in_window; | |
53bb6b99 | 326 | int fully_p; |
7ab12479 | 327 | |
f28b75a9 MB |
328 | w = decode_window (window); |
329 | buf = XBUFFER (w->buffer); | |
330 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
331 | ||
332 | if (!NILP (pos)) | |
7ab12479 | 333 | { |
b7826503 | 334 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
335 | posint = XINT (pos); |
336 | } | |
f28b75a9 MB |
337 | else if (w == XWINDOW (selected_window)) |
338 | posint = PT; | |
339 | else | |
340 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 341 | |
53bb6b99 | 342 | /* If position is above window start, it's not visible. */ |
5500c422 | 343 | if (posint < CHARPOS (top)) |
9a132b1f GM |
344 | in_window = Qnil; |
345 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
81e4d465 MB |
346 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) |
347 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
81e4d465 | 348 | { |
53bb6b99 GM |
349 | /* If frame is up-to-date, and POSINT is < window end pos, use |
350 | that info. This doesn't work for POSINT == end pos, because | |
351 | the window end pos is actually the position _after_ the last | |
352 | char in the window. */ | |
5cdb3cf3 | 353 | if (NILP (partially)) |
53bb6b99 | 354 | { |
5cdb3cf3 | 355 | pos_visible_p (w, posint, &fully_p, NILP (partially)); |
53bb6b99 GM |
356 | in_window = fully_p ? Qt : Qnil; |
357 | } | |
81e4d465 | 358 | else |
53bb6b99 | 359 | in_window = Qt; |
81e4d465 | 360 | } |
9a132b1f GM |
361 | else if (posint > BUF_ZV (buf)) |
362 | in_window = Qnil; | |
363 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
364 | /* If window start is out of range, do something reasonable. */ | |
365 | in_window = Qnil; | |
7ab12479 JB |
366 | else |
367 | { | |
5cdb3cf3 MB |
368 | if (pos_visible_p (w, posint, &fully_p, NILP (partially))) |
369 | in_window = !NILP (partially) || fully_p ? Qt : Qnil; | |
81e4d465 MB |
370 | else |
371 | in_window = Qnil; | |
7ab12479 | 372 | } |
9a132b1f GM |
373 | |
374 | return in_window; | |
7ab12479 | 375 | } |
53bb6b99 | 376 | |
7ab12479 JB |
377 | \f |
378 | static struct window * | |
379 | decode_window (window) | |
380 | register Lisp_Object window; | |
381 | { | |
265a9e55 | 382 | if (NILP (window)) |
7ab12479 JB |
383 | return XWINDOW (selected_window); |
384 | ||
b7826503 | 385 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
386 | return XWINDOW (window); |
387 | } | |
388 | ||
389 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
fdb82f93 PJ |
390 | doc: /* Return the buffer that WINDOW is displaying. */) |
391 | (window) | |
7ab12479 JB |
392 | Lisp_Object window; |
393 | { | |
394 | return decode_window (window)->buffer; | |
395 | } | |
396 | ||
397 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
398 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
399 | (window) | |
7ab12479 JB |
400 | Lisp_Object window; |
401 | { | |
402 | return decode_window (window)->height; | |
403 | } | |
404 | ||
405 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
406 | doc: /* Return the number of display columns in WINDOW. |
407 | This is the width that is usable columns available for text in WINDOW. | |
408 | If you want to find out how many columns WINDOW takes up, | |
409 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
410 | (window) | |
7ab12479 JB |
411 | Lisp_Object window; |
412 | { | |
ee61d94e | 413 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
414 | } |
415 | ||
416 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
417 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
418 | (window) | |
7ab12479 JB |
419 | Lisp_Object window; |
420 | { | |
421 | return decode_window (window)->hscroll; | |
422 | } | |
423 | ||
424 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 PJ |
425 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
426 | NCOL should be zero or positive. */) | |
427 | (window, ncol) | |
ea68264b | 428 | Lisp_Object window, ncol; |
7ab12479 | 429 | { |
ea68264b GM |
430 | struct window *w = decode_window (window); |
431 | int hscroll; | |
7ab12479 | 432 | |
b7826503 | 433 | CHECK_NUMBER (ncol); |
ea68264b GM |
434 | hscroll = max (0, XINT (ncol)); |
435 | ||
436 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
437 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 438 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
ea68264b | 439 | |
c67fa410 | 440 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
441 | return ncol; |
442 | } | |
443 | ||
190eb263 RS |
444 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
445 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
446 | doc: /* Return WINDOW's redisplay end trigger value. |
447 | See `set-window-redisplay-end-trigger' for more information. */) | |
448 | (window) | |
190eb263 RS |
449 | Lisp_Object window; |
450 | { | |
451 | return decode_window (window)->redisplay_end_trigger; | |
452 | } | |
453 | ||
454 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
455 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
456 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
457 | VALUE should be a buffer position (typically a marker) or nil. | |
458 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
459 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
460 | with two arguments: WINDOW, and the end trigger value. | |
461 | Afterwards the end-trigger value is reset to nil. */) | |
462 | (window, value) | |
190eb263 RS |
463 | register Lisp_Object window, value; |
464 | { | |
465 | register struct window *w; | |
466 | ||
467 | w = decode_window (window); | |
468 | w->redisplay_end_trigger = value; | |
469 | return value; | |
470 | } | |
471 | ||
7ab12479 | 472 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
473 | doc: /* Return a list of the edge coordinates of WINDOW. |
474 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
475 | RIGHT is one more than the rightmost column used by WINDOW, | |
476 | and BOTTOM is one more than the bottommost row used by WINDOW | |
477 | and its mode-line. */) | |
478 | (window) | |
7ab12479 JB |
479 | Lisp_Object window; |
480 | { | |
481 | register struct window *w = decode_window (window); | |
482 | ||
483 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 484 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
485 | Fcons (make_number (XFASTINT (w->top) |
486 | + XFASTINT (w->height)), | |
487 | Qnil)))); | |
488 | } | |
489 | ||
fbad6f9a | 490 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
491 | If it is not, return 0; |
492 | if it is in the window's text area, | |
493 | set *x and *y to its location relative to the upper left corner | |
494 | of the window, and | |
495 | return 1; | |
496 | if it is on the window's modeline, return 2; | |
497 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
498 | return 3. |
499 | if it is on the window's top line, return 4; | |
81d189fd | 500 | if it is in left or right fringe of the window, |
fbad6f9a | 501 | return 5 or 6, and convert *X and *Y to window-relative corrdinates. |
5500c422 GM |
502 | |
503 | X and Y are frame relative pixel coordinates. */ | |
504 | ||
7442878f | 505 | static enum window_part |
d5783c40 JB |
506 | coordinates_in_window (w, x, y) |
507 | register struct window *w; | |
508 | register int *x, *y; | |
509 | { | |
1cb794ba GM |
510 | /* Let's make this a global enum later, instead of using numbers |
511 | everywhere. */ | |
b0228ace GM |
512 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
513 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 514 | enum window_part part; |
15c565ac | 515 | int ux = CANON_X_UNIT (f); |
b0228ace GM |
516 | int x0 = XFASTINT (w->left) * ux; |
517 | int x1 = x0 + XFASTINT (w->width) * ux; | |
dad75588 GM |
518 | /* The width of the area where the vertical line can be dragged. |
519 | (Between mode lines for instance. */ | |
520 | int grabbable_width = ux; | |
b0228ace GM |
521 | |
522 | if (*x < x0 || *x >= x1) | |
523 | return ON_NOTHING; | |
524 | ||
466539bc EZ |
525 | /* In what's below, we subtract 1 when computing right_x because we |
526 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
527 | if (w->pseudo_window_p) |
528 | { | |
529 | left_x = 0; | |
b0228ace | 530 | right_x = XFASTINT (w->width) * CANON_X_UNIT (f) - 1; |
5500c422 GM |
531 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); |
532 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
533 | } | |
534 | else | |
535 | { | |
2add4349 | 536 | left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w) |
50df5e5a | 537 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
466539bc | 538 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1; |
2add4349 | 539 | top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w) |
50df5e5a | 540 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
5500c422 GM |
541 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); |
542 | } | |
37962e60 | 543 | |
1cb794ba GM |
544 | /* On the mode line or header line? If it's near the start of |
545 | the mode or header line of window that's has a horizontal | |
546 | sibling, say it's on the vertical line. That's to be able | |
547 | to resize windows horizontally in case we're using toolkit | |
548 | scroll bars. */ | |
b0228ace | 549 | |
1cb794ba | 550 | if (WINDOW_WANTS_MODELINE_P (w) |
b0228ace GM |
551 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) |
552 | && *y < bottom_y) | |
1cb794ba | 553 | { |
b0228ace GM |
554 | /* We're somewhere on the mode line. We consider the place |
555 | between mode lines of horizontally adjacent mode lines | |
556 | as the vertical border. If scroll bars on the left, | |
557 | return the right window. */ | |
558 | part = ON_MODE_LINE; | |
559 | ||
560 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
561 | { | |
dad75588 | 562 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
563 | part = ON_VERTICAL_BORDER; |
564 | } | |
dad75588 | 565 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace | 566 | part = ON_VERTICAL_BORDER; |
1cb794ba | 567 | } |
b0228ace GM |
568 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
569 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
570 | && *y >= top_y) | |
571 | { | |
572 | part = ON_HEADER_LINE; | |
573 | ||
574 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
575 | { | |
dad75588 | 576 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
577 | part = ON_VERTICAL_BORDER; |
578 | } | |
dad75588 | 579 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace GM |
580 | part = ON_VERTICAL_BORDER; |
581 | } | |
582 | /* Outside anything interesting? */ | |
583 | else if (*y < top_y | |
584 | || *y >= bottom_y | |
585 | || *x < (left_x | |
c13418ac | 586 | - FRAME_LEFT_FRINGE_WIDTH (f) |
b0228ace | 587 | - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * ux) |
7442878f | 588 | || *x > (right_x |
c13418ac | 589 | + FRAME_RIGHT_FRINGE_WIDTH (f) |
7442878f | 590 | + FRAME_RIGHT_SCROLL_BAR_WIDTH (f) * ux)) |
1cb794ba | 591 | { |
b0228ace | 592 | part = ON_NOTHING; |
1cb794ba | 593 | } |
b0228ace | 594 | else if (FRAME_WINDOW_P (f)) |
fbad6f9a | 595 | { |
447e9da0 GM |
596 | if (!w->pseudo_window_p |
597 | && !FRAME_HAS_VERTICAL_SCROLL_BARS (f) | |
598 | && !WINDOW_RIGHTMOST_P (w) | |
c13418ac | 599 | && (abs (*x - right_x - FRAME_RIGHT_FRINGE_WIDTH (f)) < grabbable_width)) |
b0228ace GM |
600 | { |
601 | part = ON_VERTICAL_BORDER; | |
602 | } | |
603 | else if (*x < left_x || *x > right_x) | |
447e9da0 | 604 | { |
81d189fd | 605 | /* Other lines than the mode line don't include fringes and |
447e9da0 | 606 | scroll bars on the left. */ |
fbad6f9a | 607 | |
447e9da0 GM |
608 | /* Convert X and Y to window-relative pixel coordinates. */ |
609 | *x -= left_x; | |
610 | *y -= top_y; | |
b0228ace GM |
611 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
612 | } | |
613 | else | |
614 | { | |
615 | *x -= left_x; | |
616 | *y -= top_y; | |
617 | part = ON_TEXT; | |
447e9da0 | 618 | } |
fbad6f9a | 619 | } |
447e9da0 GM |
620 | else |
621 | { | |
622 | /* Need to say "*x > right_x" rather than >=, since on character | |
623 | terminals, the vertical line's x coordinate is right_x. */ | |
624 | if (*x < left_x || *x > right_x) | |
625 | { | |
81d189fd | 626 | /* Other lines than the mode line don't include fringes and |
447e9da0 GM |
627 | scroll bars on the left. */ |
628 | ||
629 | /* Convert X and Y to window-relative pixel coordinates. */ | |
630 | *x -= left_x; | |
631 | *y -= top_y; | |
b0228ace | 632 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
447e9da0 | 633 | } |
447e9da0 | 634 | /* Here, too, "*x > right_x" is because of character terminals. */ |
b0228ace GM |
635 | else if (!w->pseudo_window_p |
636 | && !WINDOW_RIGHTMOST_P (w) | |
637 | && *x > right_x - ux) | |
638 | { | |
639 | /* On the border on the right side of the window? Assume that | |
640 | this area begins at RIGHT_X minus a canonical char width. */ | |
641 | part = ON_VERTICAL_BORDER; | |
642 | } | |
643 | else | |
644 | { | |
645 | /* Convert X and Y to window-relative pixel coordinates. */ | |
646 | *x -= left_x; | |
647 | *y -= top_y; | |
648 | part = ON_TEXT; | |
649 | } | |
447e9da0 | 650 | } |
b0228ace GM |
651 | |
652 | return part; | |
d5783c40 JB |
653 | } |
654 | ||
b0228ace | 655 | |
d5783c40 | 656 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
657 | Scoordinates_in_window_p, 2, 2, 0, |
658 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
659 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
660 | measured in characters from the upper-left corner of the frame. | |
661 | \(0 . 0) denotes the character in the upper left corner of the | |
662 | frame. | |
663 | If COORDINATES are in the text portion of WINDOW, | |
664 | the coordinates relative to the window are returned. | |
665 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
666 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
667 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
668 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 PJ |
669 | If they are on the border between WINDOW and its right sibling, |
670 | `vertical-line' is returned. */) | |
671 | (coordinates, window) | |
d5783c40 JB |
672 | register Lisp_Object coordinates, window; |
673 | { | |
5500c422 GM |
674 | struct window *w; |
675 | struct frame *f; | |
d5783c40 | 676 | int x, y; |
5500c422 | 677 | Lisp_Object lx, ly; |
d5783c40 | 678 | |
b7826503 | 679 | CHECK_LIVE_WINDOW (window); |
5500c422 GM |
680 | w = XWINDOW (window); |
681 | f = XFRAME (w->frame); | |
b7826503 | 682 | CHECK_CONS (coordinates); |
5500c422 GM |
683 | lx = Fcar (coordinates); |
684 | ly = Fcdr (coordinates); | |
b7826503 PJ |
685 | CHECK_NUMBER_OR_FLOAT (lx); |
686 | CHECK_NUMBER_OR_FLOAT (ly); | |
5500c422 GM |
687 | x = PIXEL_X_FROM_CANON_X (f, lx); |
688 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
689 | ||
690 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 691 | { |
7442878f | 692 | case ON_NOTHING: |
d5783c40 JB |
693 | return Qnil; |
694 | ||
7442878f GM |
695 | case ON_TEXT: |
696 | /* X and Y are now window relative pixel coordinates. Convert | |
697 | them to canonical char units before returning them. */ | |
5500c422 GM |
698 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), |
699 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 700 | |
7442878f | 701 | case ON_MODE_LINE: |
d5783c40 | 702 | return Qmode_line; |
37962e60 | 703 | |
7442878f | 704 | case ON_VERTICAL_BORDER: |
e5d77022 | 705 | return Qvertical_line; |
d5783c40 | 706 | |
7442878f | 707 | case ON_HEADER_LINE: |
045dee35 | 708 | return Qheader_line; |
5500c422 | 709 | |
7442878f GM |
710 | case ON_LEFT_FRINGE: |
711 | return Qleft_fringe; | |
fbad6f9a | 712 | |
7442878f GM |
713 | case ON_RIGHT_FRINGE: |
714 | return Qright_fringe; | |
fbad6f9a | 715 | |
d5783c40 JB |
716 | default: |
717 | abort (); | |
718 | } | |
719 | } | |
720 | ||
67492200 GM |
721 | |
722 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
723 | Check if window W contains coordinates specified by USER_DATA which |
724 | is actually a pointer to a struct check_window_data CW. | |
725 | ||
726 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
727 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 728 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
729 | zero from this function to stop iterating over windows. */ |
730 | ||
731 | struct check_window_data | |
732 | { | |
733 | Lisp_Object *window; | |
734 | int *x, *y, *part; | |
735 | }; | |
67492200 GM |
736 | |
737 | static int | |
f95464e4 | 738 | check_window_containing (w, user_data) |
67492200 | 739 | struct window *w; |
f95464e4 | 740 | void *user_data; |
67492200 | 741 | { |
f95464e4 | 742 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
743 | enum window_part found; |
744 | int continue_p = 1; | |
67492200 | 745 | |
f95464e4 | 746 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 747 | if (found != ON_NOTHING) |
67492200 | 748 | { |
f95464e4 GM |
749 | *cw->part = found - 1; |
750 | XSETWINDOW (*cw->window, w); | |
7442878f | 751 | continue_p = 0; |
67492200 GM |
752 | } |
753 | ||
7442878f | 754 | return continue_p; |
67492200 GM |
755 | } |
756 | ||
757 | ||
5500c422 GM |
758 | /* Find the window containing frame-relative pixel position X/Y and |
759 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
760 | set *PART to 1; if it is on the separating line between the window | |
761 | and its right sibling, set it to 2; otherwise set it to 0. If | |
762 | there is no window under X, Y return nil and leave *PART | |
67492200 GM |
763 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
764 | ||
765 | This function was previously implemented with a loop cycling over | |
766 | windows with Fnext_window, and starting with the frame's selected | |
767 | window. It turned out that this doesn't work with an | |
768 | implementation of next_window using Vwindow_list, because | |
769 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
770 | tree of F when this function is called asynchronously from | |
771 | note_mouse_highlight. The original loop didn't terminate in this | |
772 | case. */ | |
5500c422 | 773 | |
7ab12479 | 774 | Lisp_Object |
67492200 GM |
775 | window_from_coordinates (f, x, y, part, tool_bar_p) |
776 | struct frame *f; | |
7ab12479 | 777 | int x, y; |
d5783c40 | 778 | int *part; |
9ea173e8 | 779 | int tool_bar_p; |
7ab12479 | 780 | { |
67492200 | 781 | Lisp_Object window; |
f95464e4 | 782 | struct check_window_data cw; |
5500c422 | 783 | |
67492200 | 784 | window = Qnil; |
f95464e4 GM |
785 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
786 | foreach_window (f, check_window_containing, &cw); | |
67492200 GM |
787 | |
788 | /* If not found above, see if it's in the tool bar window, if a tool | |
789 | bar exists. */ | |
790 | if (NILP (window) | |
791 | && tool_bar_p | |
792 | && WINDOWP (f->tool_bar_window) | |
793 | && XINT (XWINDOW (f->tool_bar_window)->height) > 0 | |
7442878f GM |
794 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
795 | != ON_NOTHING)) | |
5500c422 GM |
796 | { |
797 | *part = 0; | |
67492200 | 798 | window = f->tool_bar_window; |
5500c422 | 799 | } |
37962e60 | 800 | |
67492200 | 801 | return window; |
7ab12479 JB |
802 | } |
803 | ||
ab17c3f2 | 804 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
805 | doc: /* Return window containing coordinates X and Y on FRAME. |
806 | If omitted, FRAME defaults to the currently selected frame. | |
807 | The top left corner of the frame is considered to be row 0, | |
808 | column 0. */) | |
809 | (x, y, frame) | |
810 | Lisp_Object x, y, frame; | |
7ab12479 JB |
811 | { |
812 | int part; | |
5500c422 | 813 | struct frame *f; |
7ab12479 | 814 | |
44fa5b1e | 815 | if (NILP (frame)) |
1ae1a37d | 816 | frame = selected_frame; |
b7826503 | 817 | CHECK_LIVE_FRAME (frame); |
5500c422 | 818 | f = XFRAME (frame); |
7ab12479 | 819 | |
5500c422 | 820 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
821 | CHECK_NUMBER_OR_FLOAT (x); |
822 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 GM |
823 | |
824 | return window_from_coordinates (f, | |
825 | PIXEL_X_FROM_CANON_X (f, x), | |
826 | PIXEL_Y_FROM_CANON_Y (f, y), | |
827 | &part, 0); | |
7ab12479 JB |
828 | } |
829 | ||
830 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
831 | doc: /* Return current value of point in WINDOW. |
832 | For a nonselected window, this is the value point would have | |
833 | if that window were selected. | |
834 | ||
835 | Note that, when WINDOW is the selected window and its buffer | |
836 | is also currently selected, the value returned is the same as (point). | |
837 | It would be more strictly correct to return the `top-level' value | |
838 | of point, outside of any save-excursion forms. | |
839 | But that is hard to define. */) | |
840 | (window) | |
7ab12479 JB |
841 | Lisp_Object window; |
842 | { | |
843 | register struct window *w = decode_window (window); | |
844 | ||
845 | if (w == XWINDOW (selected_window) | |
846 | && current_buffer == XBUFFER (w->buffer)) | |
847 | return Fpoint (); | |
848 | return Fmarker_position (w->pointm); | |
849 | } | |
850 | ||
851 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
852 | doc: /* Return position at which display currently starts in WINDOW. |
853 | This is updated by redisplay or by calling `set-window-start'. */) | |
854 | (window) | |
7ab12479 JB |
855 | Lisp_Object window; |
856 | { | |
857 | return Fmarker_position (decode_window (window)->start); | |
858 | } | |
859 | ||
8646118f RS |
860 | /* This is text temporarily removed from the doc string below. |
861 | ||
fdb82f93 PJ |
862 | This function returns nil if the position is not currently known. |
863 | That happens when redisplay is preempted and doesn't finish. | |
864 | If in that case you want to compute where the end of the window would | |
865 | have been if redisplay had finished, do this: | |
866 | (save-excursion | |
867 | (goto-char (window-start window)) | |
868 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
869 | (point))") */ |
870 | ||
478292ed | 871 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
872 | doc: /* Return position at which display currently ends in WINDOW. |
873 | This is updated by redisplay, when it runs to completion. | |
874 | Simply changing the buffer text or setting `window-start' | |
875 | does not update this value. | |
876 | If UPDATE is non-nil, compute the up-to-date position | |
877 | if it isn't already recorded. */) | |
878 | (window, update) | |
478292ed | 879 | Lisp_Object window, update; |
7ab12479 JB |
880 | { |
881 | Lisp_Object value; | |
882 | struct window *w = decode_window (window); | |
5a41ab94 RS |
883 | Lisp_Object buf; |
884 | ||
885 | buf = w->buffer; | |
b7826503 | 886 | CHECK_BUFFER (buf); |
5a41ab94 | 887 | |
8646118f | 888 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
889 | /* If we don't know the end position, return nil. |
890 | The user can compute it with vertical-motion if he wants to. | |
891 | It would be nicer to do it automatically, | |
892 | but that's so slow that it would probably bother people. */ | |
893 | if (NILP (w->window_end_valid)) | |
894 | return Qnil; | |
8646118f | 895 | #endif |
7250968e | 896 | |
478292ed RS |
897 | if (! NILP (update) |
898 | && ! (! NILP (w->window_end_valid) | |
899 | && XFASTINT (w->last_modified) >= MODIFF)) | |
900 | { | |
cbc099e5 GM |
901 | struct text_pos startp; |
902 | struct it it; | |
99593a9d | 903 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
904 | |
905 | /* In case W->start is out of the range, use something | |
906 | reasonable. This situation occured when loading a file with | |
907 | `-l' containing a call to `rmail' with subsequent other | |
908 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 909 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 910 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 911 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 912 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 913 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 914 | else |
cbc099e5 GM |
915 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
916 | ||
917 | /* Cannot use Fvertical_motion because that function doesn't | |
918 | cope with variable-height lines. */ | |
99593a9d GM |
919 | if (b != current_buffer) |
920 | { | |
921 | old_buffer = current_buffer; | |
922 | set_buffer_internal (b); | |
923 | } | |
924 | ||
cbc099e5 GM |
925 | start_display (&it, w, startp); |
926 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
927 | if (it.current_y < it.last_visible_y) |
928 | move_it_past_eol (&it); | |
cbc099e5 | 929 | value = make_number (IT_CHARPOS (it)); |
99593a9d GM |
930 | |
931 | if (old_buffer) | |
932 | set_buffer_internal (old_buffer); | |
478292ed RS |
933 | } |
934 | else | |
cbc099e5 | 935 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
936 | |
937 | return value; | |
938 | } | |
939 | ||
940 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
fdb82f93 PJ |
941 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. */) |
942 | (window, pos) | |
7ab12479 JB |
943 | Lisp_Object window, pos; |
944 | { | |
945 | register struct window *w = decode_window (window); | |
946 | ||
b7826503 | 947 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
948 | if (w == XWINDOW (selected_window) |
949 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
950 | Fgoto_char (pos); |
951 | else | |
952 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 953 | |
0685cb3c GM |
954 | /* We have to make sure that redisplay updates the window to show |
955 | the new value of point. */ | |
956 | if (!EQ (window, selected_window)) | |
799417bd | 957 | ++windows_or_buffers_changed; |
ce7fae7d | 958 | |
7ab12479 JB |
959 | return pos; |
960 | } | |
961 | ||
962 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 PJ |
963 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
964 | Optional third arg NOFORCE non-nil inhibits next redisplay | |
965 | from overriding motion of point in order to display at this exact start. */) | |
966 | (window, pos, noforce) | |
7ab12479 JB |
967 | Lisp_Object window, pos, noforce; |
968 | { | |
969 | register struct window *w = decode_window (window); | |
970 | ||
b7826503 | 971 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
972 | set_marker_restricted (w->start, pos, w->buffer); |
973 | /* this is not right, but much easier than doing what is right. */ | |
974 | w->start_at_line_beg = Qnil; | |
265a9e55 | 975 | if (NILP (noforce)) |
7ab12479 JB |
976 | w->force_start = Qt; |
977 | w->update_mode_line = Qt; | |
d834a2e9 | 978 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 979 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
980 | if (!EQ (window, selected_window)) |
981 | windows_or_buffers_changed++; | |
ce7fae7d | 982 | |
7ab12479 JB |
983 | return pos; |
984 | } | |
985 | ||
986 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
987 | 1, 1, 0, | |
fdb82f93 PJ |
988 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
989 | See also `set-window-dedicated-p'. */) | |
990 | (window) | |
7ab12479 JB |
991 | Lisp_Object window; |
992 | { | |
993 | return decode_window (window)->dedicated; | |
994 | } | |
995 | ||
d207b766 RS |
996 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
997 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
998 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
999 | If it is dedicated, Emacs will not automatically change | |
1000 | which buffer appears in it. | |
1001 | The second argument is the new value for the dedication flag; | |
1002 | non-nil means yes. */) | |
1003 | (window, arg) | |
1004 | Lisp_Object window, arg; | |
7ab12479 JB |
1005 | { |
1006 | register struct window *w = decode_window (window); | |
1007 | ||
265a9e55 | 1008 | if (NILP (arg)) |
7ab12479 JB |
1009 | w->dedicated = Qnil; |
1010 | else | |
d207b766 | 1011 | w->dedicated = Qt; |
7ab12479 JB |
1012 | |
1013 | return w->dedicated; | |
1014 | } | |
1015 | ||
1016 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1017 | 0, 1, 0, | |
fdb82f93 PJ |
1018 | doc: /* Return the display-table that WINDOW is using. */) |
1019 | (window) | |
7ab12479 JB |
1020 | Lisp_Object window; |
1021 | { | |
1022 | return decode_window (window)->display_table; | |
1023 | } | |
1024 | ||
5500c422 GM |
1025 | /* Get the display table for use on window W. This is either W's |
1026 | display table or W's buffer's display table. Ignore the specified | |
1027 | tables if they are not valid; if no valid table is specified, | |
1028 | return 0. */ | |
7ab12479 | 1029 | |
319315f1 | 1030 | struct Lisp_Char_Table * |
7ab12479 JB |
1031 | window_display_table (w) |
1032 | struct window *w; | |
1033 | { | |
c756cdbe GM |
1034 | struct Lisp_Char_Table *dp = NULL; |
1035 | ||
1036 | if (DISP_TABLE_P (w->display_table)) | |
1037 | dp = XCHAR_TABLE (w->display_table); | |
1038 | else if (BUFFERP (w->buffer)) | |
1039 | { | |
1040 | struct buffer *b = XBUFFER (w->buffer); | |
1041 | ||
1042 | if (DISP_TABLE_P (b->display_table)) | |
1043 | dp = XCHAR_TABLE (b->display_table); | |
1044 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1045 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1046 | } | |
171d003c | 1047 | |
c756cdbe | 1048 | return dp; |
7ab12479 JB |
1049 | } |
1050 | ||
3a2712f9 | 1051 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1052 | doc: /* Set WINDOW's display-table to TABLE. */) |
1053 | (window, table) | |
7ab12479 JB |
1054 | register Lisp_Object window, table; |
1055 | { | |
1056 | register struct window *w; | |
7ab12479 JB |
1057 | |
1058 | w = decode_window (window); | |
1059 | w->display_table = table; | |
1060 | return table; | |
1061 | } | |
1062 | \f | |
1063 | /* Record info on buffer window w is displaying | |
1064 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1065 | static void |
7ab12479 JB |
1066 | unshow_buffer (w) |
1067 | register struct window *w; | |
1068 | { | |
12cae7c0 | 1069 | Lisp_Object buf; |
b73ea88e | 1070 | struct buffer *b; |
7ab12479 | 1071 | |
12cae7c0 | 1072 | buf = w->buffer; |
b73ea88e RS |
1073 | b = XBUFFER (buf); |
1074 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1075 | abort (); |
1076 | ||
573f41ab | 1077 | #if 0 |
7ab12479 JB |
1078 | if (w == XWINDOW (selected_window) |
1079 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1080 | /* Do this except when the selected window's buffer | |
1081 | is being removed from some other window. */ | |
573f41ab RS |
1082 | #endif |
1083 | /* last_window_start records the start position that this buffer | |
1084 | had in the last window to be disconnected from it. | |
1085 | Now that this statement is unconditional, | |
1086 | it is possible for the buffer to be displayed in the | |
1087 | selected window, while last_window_start reflects another | |
1088 | window which was recently showing the same buffer. | |
1089 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1090 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1091 | |
1092 | /* Point in the selected window's buffer | |
1093 | is actually stored in that buffer, and the window's pointm isn't used. | |
1094 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1095 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1096 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1097 | && !(WINDOWP (b->last_selected_window) |
1098 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1099 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1100 | temp_set_point_both (b, |
1101 | clip_to_bounds (BUF_BEGV (b), | |
1102 | XMARKER (w->pointm)->charpos, | |
1103 | BUF_ZV (b)), | |
1104 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1105 | marker_byte_position (w->pointm), | |
1106 | BUF_ZV_BYTE (b))); | |
719eaeb1 | 1107 | |
8801a864 KR |
1108 | if (WINDOWP (b->last_selected_window) |
1109 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1110 | b->last_selected_window = Qnil; |
7ab12479 JB |
1111 | } |
1112 | ||
1113 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1114 | static void |
7ab12479 JB |
1115 | replace_window (old, replacement) |
1116 | Lisp_Object old, replacement; | |
1117 | { | |
1118 | register Lisp_Object tem; | |
1119 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1120 | ||
44fa5b1e JB |
1121 | /* If OLD is its frame's root_window, then replacement is the new |
1122 | root_window for that frame. */ | |
7ab12479 | 1123 | |
7f4161e0 | 1124 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1125 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
1126 | |
1127 | p->left = o->left; | |
1128 | p->top = o->top; | |
1129 | p->width = o->width; | |
1130 | p->height = o->height; | |
5500c422 GM |
1131 | p->desired_matrix = p->current_matrix = 0; |
1132 | p->vscroll = 0; | |
1133 | bzero (&p->cursor, sizeof (p->cursor)); | |
1134 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1135 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1136 | p->phys_cursor_type = -1; | |
1137 | p->must_be_updated_p = 0; | |
1138 | p->pseudo_window_p = 0; | |
1139 | XSETFASTINT (p->window_end_vpos, 0); | |
1140 | XSETFASTINT (p->window_end_pos, 0); | |
1141 | p->window_end_valid = Qnil; | |
7bbb5782 | 1142 | p->frozen_window_start_p = 0; |
f984d4fc | 1143 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
1144 | |
1145 | p->next = tem = o->next; | |
265a9e55 | 1146 | if (!NILP (tem)) |
7ab12479 JB |
1147 | XWINDOW (tem)->prev = replacement; |
1148 | ||
1149 | p->prev = tem = o->prev; | |
265a9e55 | 1150 | if (!NILP (tem)) |
7ab12479 JB |
1151 | XWINDOW (tem)->next = replacement; |
1152 | ||
1153 | p->parent = tem = o->parent; | |
265a9e55 | 1154 | if (!NILP (tem)) |
7ab12479 JB |
1155 | { |
1156 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1157 | XWINDOW (tem)->vchild = replacement; | |
1158 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1159 | XWINDOW (tem)->hchild = replacement; | |
1160 | } | |
1161 | ||
1162 | /*** Here, if replacement is a vertical combination | |
1163 | and so is its new parent, we should make replacement's | |
1164 | children be children of that parent instead. ***/ | |
1165 | } | |
1166 | ||
1167 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1168 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1169 | (window) | |
7ab12479 | 1170 | register Lisp_Object window; |
543f5fb1 RS |
1171 | { |
1172 | delete_window (window); | |
1173 | ||
1174 | if (! NILP (Vwindow_configuration_change_hook) | |
1175 | && ! NILP (Vrun_hooks)) | |
1176 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1177 | ||
1178 | return Qnil; | |
1179 | } | |
1180 | ||
5e14b1fc | 1181 | void |
543f5fb1 RS |
1182 | delete_window (window) |
1183 | register Lisp_Object window; | |
7ab12479 JB |
1184 | { |
1185 | register Lisp_Object tem, parent, sib; | |
1186 | register struct window *p; | |
1187 | register struct window *par; | |
951f9df5 | 1188 | struct frame *f; |
7ab12479 | 1189 | |
605be8af JB |
1190 | /* Because this function is called by other C code on non-leaf |
1191 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1192 | so we can't decode_window here. */ | |
265a9e55 | 1193 | if (NILP (window)) |
7ab12479 JB |
1194 | window = selected_window; |
1195 | else | |
b7826503 | 1196 | CHECK_WINDOW (window); |
7ab12479 | 1197 | p = XWINDOW (window); |
605be8af JB |
1198 | |
1199 | /* It's okay to delete an already-deleted window. */ | |
1200 | if (NILP (p->buffer) | |
1201 | && NILP (p->hchild) | |
1202 | && NILP (p->vchild)) | |
296b535c | 1203 | return; |
605be8af | 1204 | |
7ab12479 | 1205 | parent = p->parent; |
265a9e55 | 1206 | if (NILP (parent)) |
7ab12479 JB |
1207 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1208 | par = XWINDOW (parent); | |
1209 | ||
1210 | windows_or_buffers_changed++; | |
67492200 | 1211 | Vwindow_list = Qnil; |
951f9df5 GM |
1212 | f = XFRAME (WINDOW_FRAME (p)); |
1213 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1214 | |
605be8af JB |
1215 | /* Are we trying to delete any frame's selected window? */ |
1216 | { | |
951f9df5 | 1217 | Lisp_Object pwindow; |
605be8af | 1218 | |
0def0403 RS |
1219 | /* See if the frame's selected window is either WINDOW |
1220 | or any subwindow of it, by finding all that window's parents | |
1221 | and comparing each one with WINDOW. */ | |
951f9df5 | 1222 | pwindow = FRAME_SELECTED_WINDOW (f); |
0def0403 RS |
1223 | |
1224 | while (!NILP (pwindow)) | |
1225 | { | |
1226 | if (EQ (window, pwindow)) | |
1227 | break; | |
1228 | pwindow = XWINDOW (pwindow)->parent; | |
1229 | } | |
1230 | ||
1231 | if (EQ (window, pwindow)) | |
605be8af | 1232 | { |
89bca612 RS |
1233 | Lisp_Object alternative; |
1234 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
1235 | |
1236 | /* If we're about to delete the selected window on the | |
1237 | selected frame, then we should use Fselect_window to select | |
1238 | the new window. On the other hand, if we're about to | |
1239 | delete the selected window on any other frame, we shouldn't do | |
1240 | anything but set the frame's selected_window slot. */ | |
1241 | if (EQ (window, selected_window)) | |
1242 | Fselect_window (alternative); | |
1243 | else | |
951f9df5 | 1244 | FRAME_SELECTED_WINDOW (f) = alternative; |
605be8af JB |
1245 | } |
1246 | } | |
7ab12479 JB |
1247 | |
1248 | tem = p->buffer; | |
1249 | /* tem is null for dummy parent windows | |
1250 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1251 | if (!NILP (tem)) |
7ab12479 JB |
1252 | { |
1253 | unshow_buffer (p); | |
1254 | unchain_marker (p->pointm); | |
1255 | unchain_marker (p->start); | |
7ab12479 JB |
1256 | } |
1257 | ||
05e71564 GM |
1258 | /* Free window glyph matrices. It is sure that they are allocated |
1259 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1260 | events and other events that access glyph matrices are not | |
1261 | processed while we are changing them. */ | |
1262 | BLOCK_INPUT; | |
951f9df5 | 1263 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1264 | |
7ab12479 | 1265 | tem = p->next; |
265a9e55 | 1266 | if (!NILP (tem)) |
7ab12479 JB |
1267 | XWINDOW (tem)->prev = p->prev; |
1268 | ||
1269 | tem = p->prev; | |
265a9e55 | 1270 | if (!NILP (tem)) |
7ab12479 JB |
1271 | XWINDOW (tem)->next = p->next; |
1272 | ||
1273 | if (EQ (window, par->hchild)) | |
1274 | par->hchild = p->next; | |
1275 | if (EQ (window, par->vchild)) | |
1276 | par->vchild = p->next; | |
1277 | ||
1278 | /* Find one of our siblings to give our space to. */ | |
1279 | sib = p->prev; | |
265a9e55 | 1280 | if (NILP (sib)) |
7ab12479 JB |
1281 | { |
1282 | /* If p gives its space to its next sibling, that sibling needs | |
1283 | to have its top/left side pulled back to where p's is. | |
1284 | set_window_{height,width} will re-position the sibling's | |
1285 | children. */ | |
1286 | sib = p->next; | |
7f4161e0 JB |
1287 | XWINDOW (sib)->top = p->top; |
1288 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1289 | } |
1290 | ||
1291 | /* Stretch that sibling. */ | |
265a9e55 | 1292 | if (!NILP (par->vchild)) |
7ab12479 JB |
1293 | set_window_height (sib, |
1294 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1295 | 1); | |
265a9e55 | 1296 | if (!NILP (par->hchild)) |
7ab12479 JB |
1297 | set_window_width (sib, |
1298 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1299 | 1); | |
1300 | ||
1301 | /* If parent now has only one child, | |
1302 | put the child into the parent's place. */ | |
7ab12479 | 1303 | tem = par->hchild; |
265a9e55 | 1304 | if (NILP (tem)) |
7ab12479 | 1305 | tem = par->vchild; |
265a9e55 | 1306 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1307 | replace_window (parent, tem); |
605be8af JB |
1308 | |
1309 | /* Since we may be deleting combination windows, we must make sure that | |
1310 | not only p but all its children have been marked as deleted. */ | |
1311 | if (! NILP (p->hchild)) | |
1312 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1313 | else if (! NILP (p->vchild)) | |
1314 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1315 | ||
1316 | /* Mark this window as deleted. */ | |
1317 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1318 | |
1319 | /* Adjust glyph matrices. */ | |
951f9df5 | 1320 | adjust_glyphs (f); |
05e71564 | 1321 | UNBLOCK_INPUT; |
7ab12479 | 1322 | } |
67492200 GM |
1323 | |
1324 | ||
7ab12479 | 1325 | \f |
67492200 GM |
1326 | /*********************************************************************** |
1327 | Window List | |
1328 | ***********************************************************************/ | |
1329 | ||
f95464e4 GM |
1330 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1331 | pointer. This is a callback function for foreach_window, used in | |
1332 | function window_list. */ | |
67492200 GM |
1333 | |
1334 | static int | |
f95464e4 | 1335 | add_window_to_list (w, user_data) |
67492200 | 1336 | struct window *w; |
f95464e4 | 1337 | void *user_data; |
67492200 | 1338 | { |
f95464e4 | 1339 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1340 | Lisp_Object window; |
1341 | XSETWINDOW (window, w); | |
212116d6 | 1342 | *list = Fcons (window, *list); |
67492200 GM |
1343 | return 1; |
1344 | } | |
1345 | ||
1346 | ||
1347 | /* Return a list of all windows, for use by next_window. If | |
1348 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1349 | list, cache it in Vwindow_list, and return that. */ | |
1350 | ||
1351 | static Lisp_Object | |
1352 | window_list () | |
1353 | { | |
1354 | if (!CONSP (Vwindow_list)) | |
1355 | { | |
1356 | Lisp_Object tail; | |
212116d6 | 1357 | |
67492200 GM |
1358 | Vwindow_list = Qnil; |
1359 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1360 | { |
1361 | Lisp_Object args[2]; | |
1362 | ||
1363 | /* We are visiting windows in canonical order, and add | |
1364 | new windows at the front of args[1], which means we | |
1365 | have to reverse this list at the end. */ | |
1366 | args[1] = Qnil; | |
1367 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1368 | args[0] = Vwindow_list; | |
1369 | args[1] = Fnreverse (args[1]); | |
1370 | Vwindow_list = Fnconc (2, args); | |
1371 | } | |
67492200 GM |
1372 | } |
1373 | ||
1374 | return Vwindow_list; | |
1375 | } | |
1376 | ||
1377 | ||
118ea242 GM |
1378 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1379 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1380 | |
118ea242 GM |
1381 | MINIBUF t means WINDOW may be minibuffer windows. |
1382 | `lambda' means WINDOW may not be a minibuffer window. | |
1383 | a window means a specific minibuffer window | |
67492200 | 1384 | |
118ea242 GM |
1385 | ALL_FRAMES t means search all frames, |
1386 | nil means search just current frame, | |
1387 | `visible' means search just visible frames, | |
1388 | 0 means search visible and iconified frames, | |
1389 | a window means search the frame that window belongs to, | |
1390 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1391 | |
1392 | static int | |
118ea242 GM |
1393 | candidate_window_p (window, owindow, minibuf, all_frames) |
1394 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1395 | { |
1396 | struct window *w = XWINDOW (window); | |
1397 | struct frame *f = XFRAME (w->frame); | |
1398 | int candidate_p = 1; | |
1399 | ||
1400 | if (!BUFFERP (w->buffer)) | |
1401 | candidate_p = 0; | |
1402 | else if (MINI_WINDOW_P (w) | |
1403 | && (EQ (minibuf, Qlambda) | |
1404 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1405 | { | |
1406 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1407 | If it is a window, consider only that one. */ | |
1408 | candidate_p = 0; | |
1409 | } | |
118ea242 GM |
1410 | else if (EQ (all_frames, Qt)) |
1411 | candidate_p = 1; | |
67492200 | 1412 | else if (NILP (all_frames)) |
118ea242 GM |
1413 | { |
1414 | xassert (WINDOWP (owindow)); | |
1415 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1416 | } | |
67492200 GM |
1417 | else if (EQ (all_frames, Qvisible)) |
1418 | { | |
1419 | FRAME_SAMPLE_VISIBILITY (f); | |
1420 | candidate_p = FRAME_VISIBLE_P (f); | |
1421 | } | |
1422 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1423 | { | |
1424 | FRAME_SAMPLE_VISIBILITY (f); | |
1425 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1426 | } | |
67492200 GM |
1427 | else if (WINDOWP (all_frames)) |
1428 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1429 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1430 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1431 | else if (FRAMEP (all_frames)) |
1432 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1433 | |
1434 | return candidate_p; | |
1435 | } | |
1436 | ||
1437 | ||
1438 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1439 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1440 | ALL_FRAMES. */ | |
1441 | ||
1442 | static void | |
1443 | decode_next_window_args (window, minibuf, all_frames) | |
1444 | Lisp_Object *window, *minibuf, *all_frames; | |
1445 | { | |
1446 | if (NILP (*window)) | |
1447 | *window = selected_window; | |
1448 | else | |
b7826503 | 1449 | CHECK_LIVE_WINDOW (*window); |
67492200 GM |
1450 | |
1451 | /* MINIBUF nil may or may not include minibuffers. Decide if it | |
1452 | does. */ | |
1453 | if (NILP (*minibuf)) | |
1454 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1455 | else if (!EQ (*minibuf, Qt)) | |
1456 | *minibuf = Qlambda; | |
1457 | ||
1458 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' | |
1459 | => count none of them, or a specific minibuffer window (the | |
1460 | active one) to count. */ | |
1461 | ||
1462 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1463 | if (NILP (*all_frames)) | |
1464 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1465 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1466 | : Qnil); | |
1467 | else if (EQ (*all_frames, Qvisible)) | |
1468 | ; | |
1469 | else if (XFASTINT (*all_frames) == 0) | |
1470 | ; | |
1471 | else if (FRAMEP (*all_frames)) | |
1472 | ; | |
1473 | else if (!EQ (*all_frames, Qt)) | |
1474 | *all_frames = Qnil; | |
1475 | ||
1476 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning | |
1477 | search just current frame, `visible' meaning search just visible | |
1478 | frames, 0 meaning search visible and iconified frames, or a | |
1479 | window, meaning search the frame that window belongs to, or a | |
1480 | frame, meaning consider windows on that frame, only. */ | |
1481 | } | |
1482 | ||
1483 | ||
1484 | /* Return the next or previous window of WINDOW in canonical ordering | |
1485 | of windows. NEXT_P non-zero means return the next window. See the | |
1486 | documentation string of next-window for the meaning of MINIBUF and | |
1487 | ALL_FRAMES. */ | |
1488 | ||
1489 | static Lisp_Object | |
1490 | next_window (window, minibuf, all_frames, next_p) | |
1491 | Lisp_Object window, minibuf, all_frames; | |
1492 | int next_p; | |
1493 | { | |
1494 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1495 | ||
1496 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just | |
1497 | return the first window on the frame. */ | |
1498 | if (FRAMEP (all_frames) | |
1499 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1500 | return Fframe_first_window (all_frames); | |
1501 | ||
212116d6 | 1502 | if (next_p) |
67492200 GM |
1503 | { |
1504 | Lisp_Object list; | |
1505 | ||
1506 | /* Find WINDOW in the list of all windows. */ | |
1507 | list = Fmemq (window, window_list ()); | |
1508 | ||
1509 | /* Scan forward from WINDOW to the end of the window list. */ | |
1510 | if (CONSP (list)) | |
1511 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1512 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1513 | break; |
1514 | ||
1515 | /* Scan from the start of the window list up to WINDOW. */ | |
1516 | if (!CONSP (list)) | |
1517 | for (list = Vwindow_list; | |
1518 | CONSP (list) && !EQ (XCAR (list), window); | |
1519 | list = XCDR (list)) | |
118ea242 | 1520 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1521 | break; |
1522 | ||
1523 | if (CONSP (list)) | |
1524 | window = XCAR (list); | |
1525 | } | |
1526 | else | |
1527 | { | |
1528 | Lisp_Object candidate, list; | |
1529 | ||
1530 | /* Scan through the list of windows for candidates. If there are | |
1531 | candidate windows in front of WINDOW, the last one of these | |
1532 | is the one we want. If there are candidates following WINDOW | |
1533 | in the list, again the last one of these is the one we want. */ | |
1534 | candidate = Qnil; | |
1535 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1536 | { | |
1537 | if (EQ (XCAR (list), window)) | |
1538 | { | |
1539 | if (WINDOWP (candidate)) | |
1540 | break; | |
1541 | } | |
118ea242 GM |
1542 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1543 | all_frames)) | |
67492200 GM |
1544 | candidate = XCAR (list); |
1545 | } | |
1546 | ||
1547 | if (WINDOWP (candidate)) | |
1548 | window = candidate; | |
1549 | } | |
1550 | ||
1551 | return window; | |
1552 | } | |
7ab12479 | 1553 | |
7ab12479 | 1554 | |
26f6279d | 1555 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1556 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1557 | If omitted, WINDOW defaults to the selected window. | |
1558 | ||
1559 | Optional second arg MINIBUF t means count the minibuffer window even | |
1560 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1561 | it is active. MINIBUF neither t nor nil means not to count the | |
1562 | minibuffer even if it is active. | |
1563 | ||
1564 | Several frames may share a single minibuffer; if the minibuffer | |
1565 | counts, all windows on all frames that share that minibuffer count | |
1566 | too. Therefore, `next-window' can be used to iterate through the | |
1567 | set of windows even when the minibuffer is on another frame. If the | |
1568 | minibuffer does not count, only windows from WINDOW's frame count. | |
1569 | ||
1570 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1571 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1572 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1573 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1574 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1575 | Anything else means restrict to WINDOW's frame. | |
1576 | ||
1577 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1578 | `next-window' to iterate through the entire cycle of acceptable | |
1579 | windows, eventually ending up back at the window you started with. | |
1580 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1581 | (window, minibuf, all_frames) | |
67492200 | 1582 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1583 | { |
67492200 | 1584 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1585 | } |
1586 | ||
67492200 | 1587 | |
26f6279d | 1588 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1589 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1590 | If omitted, WINDOW defaults to the selected window. | |
1591 | ||
1592 | Optional second arg MINIBUF t means count the minibuffer window even | |
1593 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1594 | it is active. MINIBUF neither t nor nil means not to count the | |
1595 | minibuffer even if it is active. | |
1596 | ||
1597 | Several frames may share a single minibuffer; if the minibuffer | |
1598 | counts, all windows on all frames that share that minibuffer count | |
1599 | too. Therefore, `previous-window' can be used to iterate through | |
1600 | the set of windows even when the minibuffer is on another frame. If | |
1601 | the minibuffer does not count, only windows from WINDOW's frame count | |
1602 | ||
1603 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1604 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1605 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1606 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1607 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1608 | Anything else means restrict to WINDOW's frame. | |
1609 | ||
1610 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1611 | `previous-window' to iterate through the entire cycle of acceptable | |
1612 | windows, eventually ending up back at the window you started with. | |
1613 | `next-window' traverses the same cycle, in the reverse order. */) | |
1614 | (window, minibuf, all_frames) | |
67492200 | 1615 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1616 | { |
67492200 | 1617 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1618 | } |
1619 | ||
67492200 | 1620 | |
62c07cc7 | 1621 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1622 | doc: /* Select the ARG'th different window on this frame. |
1623 | All windows on current frame are arranged in a cyclic order. | |
1624 | This command selects the window ARG steps away in that order. | |
1625 | A negative ARG moves in the opposite order. If the optional second | |
1626 | argument ALL_FRAMES is non-nil, cycle through all frames. */) | |
1627 | (arg, all_frames) | |
67492200 | 1628 | Lisp_Object arg, all_frames; |
7ab12479 | 1629 | { |
67492200 GM |
1630 | Lisp_Object window; |
1631 | int i; | |
7ab12479 | 1632 | |
b7826503 | 1633 | CHECK_NUMBER (arg); |
67492200 GM |
1634 | window = selected_window; |
1635 | ||
1636 | for (i = XINT (arg); i > 0; --i) | |
1637 | window = Fnext_window (window, Qnil, all_frames); | |
1638 | for (; i < 0; ++i) | |
1639 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1640 | |
67492200 | 1641 | Fselect_window (window); |
7ab12479 JB |
1642 | return Qnil; |
1643 | } | |
67492200 GM |
1644 | |
1645 | ||
1646 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1647 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1648 | FRAME nil or omitted means use the selected frame. | |
1649 | WINDOW nil or omitted means use the selected window. | |
1650 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1651 | MINIBUF nil or omitted means include the minibuffer window only | |
1652 | if it's active. | |
1653 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1654 | (frame, minibuf, window) | |
cd2904bd GM |
1655 | Lisp_Object frame, minibuf, window; |
1656 | { | |
cd2904bd GM |
1657 | if (NILP (window)) |
1658 | window = selected_window; | |
1659 | if (NILP (frame)) | |
1660 | frame = selected_frame; | |
1661 | ||
1662 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1663 | error ("Window is on a different frame"); | |
1664 | ||
1665 | return window_list_1 (window, minibuf, frame); | |
1666 | } | |
1667 | ||
1668 | ||
1669 | /* Return a list of windows in canonical ordering. Arguments are like | |
1670 | for `next-window'. */ | |
1671 | ||
1672 | static Lisp_Object | |
1673 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1674 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1675 | { |
1676 | Lisp_Object tail, list; | |
1677 | ||
1678 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1679 | list = Qnil; | |
1680 | ||
1681 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
118ea242 | 1682 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 GM |
1683 | list = Fcons (XCAR (tail), list); |
1684 | ||
118ea242 | 1685 | return Fnreverse (list); |
67492200 GM |
1686 | } |
1687 | ||
1688 | ||
7ab12479 JB |
1689 | \f |
1690 | /* Look at all windows, performing an operation specified by TYPE | |
1691 | with argument OBJ. | |
75d8f668 | 1692 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1693 | Qnil, look at just the selected frame; |
89bca612 | 1694 | Qvisible, look at visible frames; |
75d8f668 | 1695 | a frame, just look at windows on that frame. |
85fe3b5e | 1696 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1697 | |
1698 | enum window_loop | |
1699 | { | |
1700 | WINDOW_LOOP_UNUSED, | |
1701 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1702 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1703 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1704 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1705 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1706 | UNSHOW_BUFFER, /* Arg is buffer */ |
1707 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1708 | }; |
1709 | ||
1710 | static Lisp_Object | |
44fa5b1e | 1711 | window_loop (type, obj, mini, frames) |
7ab12479 | 1712 | enum window_loop type; |
118ea242 | 1713 | Lisp_Object obj, frames; |
7ab12479 JB |
1714 | int mini; |
1715 | { | |
118ea242 GM |
1716 | Lisp_Object window, windows, best_window, frame_arg; |
1717 | struct frame *f; | |
ffdc852d | 1718 | struct gcpro gcpro1; |
118ea242 | 1719 | |
44fa5b1e JB |
1720 | /* If we're only looping through windows on a particular frame, |
1721 | frame points to that frame. If we're looping through windows | |
1722 | on all frames, frame is 0. */ | |
1723 | if (FRAMEP (frames)) | |
118ea242 | 1724 | f = XFRAME (frames); |
44fa5b1e | 1725 | else if (NILP (frames)) |
118ea242 | 1726 | f = SELECTED_FRAME (); |
7ab12479 | 1727 | else |
118ea242 GM |
1728 | f = NULL; |
1729 | ||
1730 | if (f) | |
89bca612 | 1731 | frame_arg = Qlambda; |
f812f9c6 RS |
1732 | else if (XFASTINT (frames) == 0) |
1733 | frame_arg = frames; | |
89bca612 RS |
1734 | else if (EQ (frames, Qvisible)) |
1735 | frame_arg = frames; | |
118ea242 GM |
1736 | else |
1737 | frame_arg = Qt; | |
7ab12479 | 1738 | |
89bca612 RS |
1739 | /* frame_arg is Qlambda to stick to one frame, |
1740 | Qvisible to consider all visible frames, | |
1741 | or Qt otherwise. */ | |
1742 | ||
7ab12479 | 1743 | /* Pick a window to start with. */ |
017b2bad | 1744 | if (WINDOWP (obj)) |
118ea242 GM |
1745 | window = obj; |
1746 | else if (f) | |
1747 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1748 | else |
118ea242 | 1749 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1750 | |
cd2904bd | 1751 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1752 | GCPRO1 (windows); |
7ab12479 | 1753 | best_window = Qnil; |
118ea242 GM |
1754 | |
1755 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1756 | { |
118ea242 GM |
1757 | struct window *w; |
1758 | ||
1759 | window = XCAR (windows); | |
1760 | w = XWINDOW (window); | |
1761 | ||
1762 | /* Note that we do not pay attention here to whether the frame | |
1763 | is visible, since Fwindow_list skips non-visible frames if | |
1764 | that is desired, under the control of frame_arg. */ | |
1765 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1766 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1767 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1768 | || (mini && minibuf_level > 0)) |
1769 | switch (type) | |
1770 | { | |
1771 | case GET_BUFFER_WINDOW: | |
118ea242 | 1772 | if (EQ (w->buffer, obj) |
5c204627 RS |
1773 | /* Don't find any minibuffer window |
1774 | except the one that is currently in use. */ | |
118ea242 GM |
1775 | && (MINI_WINDOW_P (w) |
1776 | ? EQ (window, minibuf_window) | |
1777 | : 1)) | |
1778 | { | |
5ddc1b75 GM |
1779 | if (NILP (best_window)) |
1780 | best_window = window; | |
1781 | else if (EQ (window, selected_window)) | |
1782 | /* For compatibility with 20.x, prefer to return | |
1783 | selected-window. */ | |
1784 | best_window = window; | |
118ea242 | 1785 | } |
7ab12479 JB |
1786 | break; |
1787 | ||
1788 | case GET_LRU_WINDOW: | |
1789 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1790 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1791 | break; |
7ab12479 | 1792 | /* Ignore dedicated windows and minibuffers. */ |
118ea242 | 1793 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
7ab12479 | 1794 | break; |
265a9e55 | 1795 | if (NILP (best_window) |
7ab12479 | 1796 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1797 | > XFASTINT (w->use_time))) |
1798 | best_window = window; | |
7ab12479 JB |
1799 | break; |
1800 | ||
1801 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1802 | if (!EQ (window, obj)) |
1803 | Fdelete_window (window); | |
7ab12479 JB |
1804 | break; |
1805 | ||
1806 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1807 | if (EQ (w->buffer, obj)) |
7ab12479 | 1808 | { |
118ea242 | 1809 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1810 | |
1811 | /* If this window is dedicated, and in a frame of its own, | |
1812 | kill the frame. */ | |
118ea242 GM |
1813 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1814 | && !NILP (w->dedicated) | |
3548e138 | 1815 | && other_visible_frames (f)) |
7ab12479 | 1816 | { |
3548e138 RS |
1817 | /* Skip the other windows on this frame. |
1818 | There might be one, the minibuffer! */ | |
118ea242 GM |
1819 | while (CONSP (XCDR (windows)) |
1820 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1821 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1822 | windows = XCDR (windows); | |
1823 | ||
3548e138 | 1824 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1825 | Fdelete_frame (w->frame, Qnil); |
1826 | } | |
1827 | else if (NILP (w->parent)) | |
1828 | { | |
1829 | /* If we're deleting the buffer displayed in the | |
1830 | only window on the frame, find a new buffer to | |
1831 | display there. */ | |
1832 | Lisp_Object buffer; | |
1833 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
118ea242 GM |
1834 | Fset_window_buffer (window, buffer); |
1835 | if (EQ (window, selected_window)) | |
1836 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1837 | } |
1838 | else | |
118ea242 | 1839 | Fdelete_window (window); |
7ab12479 JB |
1840 | } |
1841 | break; | |
1842 | ||
1843 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1844 | { |
118ea242 | 1845 | /* Ignore dedicated windows and minibuffers. */ |
c930dfab | 1846 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
118ea242 GM |
1847 | break; |
1848 | ||
c930dfab | 1849 | if (NILP (best_window)) |
118ea242 | 1850 | best_window = window; |
c930dfab GM |
1851 | else |
1852 | { | |
1853 | struct window *b = XWINDOW (best_window); | |
1854 | if (XFASTINT (w->height) * XFASTINT (w->width) | |
1855 | > XFASTINT (b->height) * XFASTINT (b->width)) | |
1856 | best_window = window; | |
1857 | } | |
7ab12479 JB |
1858 | } |
1859 | break; | |
1860 | ||
1861 | case UNSHOW_BUFFER: | |
118ea242 | 1862 | if (EQ (w->buffer, obj)) |
7ab12479 | 1863 | { |
118ea242 GM |
1864 | Lisp_Object buffer; |
1865 | struct frame *f = XFRAME (w->frame); | |
1866 | ||
7ab12479 | 1867 | /* Find another buffer to show in this window. */ |
118ea242 | 1868 | buffer = Fother_buffer (obj, Qnil, w->frame); |
118ea242 | 1869 | |
38ab08d1 RS |
1870 | /* If this window is dedicated, and in a frame of its own, |
1871 | kill the frame. */ | |
118ea242 GM |
1872 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1873 | && !NILP (w->dedicated) | |
38ab08d1 | 1874 | && other_visible_frames (f)) |
45945a7b RS |
1875 | { |
1876 | /* Skip the other windows on this frame. | |
1877 | There might be one, the minibuffer! */ | |
118ea242 GM |
1878 | while (CONSP (XCDR (windows)) |
1879 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1880 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1881 | windows = XCDR (windows); | |
1882 | ||
45945a7b | 1883 | /* Now we can safely delete the frame. */ |
118ea242 | 1884 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1885 | } |
38ab08d1 | 1886 | else |
38ab08d1 RS |
1887 | { |
1888 | /* Otherwise show a different buffer in the window. */ | |
118ea242 GM |
1889 | w->dedicated = Qnil; |
1890 | Fset_window_buffer (window, buffer); | |
1891 | if (EQ (window, selected_window)) | |
1892 | Fset_buffer (w->buffer); | |
38ab08d1 | 1893 | } |
7ab12479 JB |
1894 | } |
1895 | break; | |
3f8ab7bd RS |
1896 | |
1897 | /* Check for a window that has a killed buffer. */ | |
1898 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1899 | if (! NILP (w->buffer) |
1900 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1901 | abort (); |
118ea242 | 1902 | break; |
6bbd7a29 GM |
1903 | |
1904 | case WINDOW_LOOP_UNUSED: | |
1905 | break; | |
7ab12479 | 1906 | } |
7ab12479 | 1907 | } |
7ab12479 | 1908 | |
118ea242 | 1909 | UNGCPRO; |
7ab12479 | 1910 | return best_window; |
37962e60 | 1911 | } |
605be8af | 1912 | |
3f8ab7bd RS |
1913 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1914 | ||
233a4a2c | 1915 | void |
3f8ab7bd RS |
1916 | check_all_windows () |
1917 | { | |
1918 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1919 | } | |
1920 | ||
7ab12479 | 1921 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
fdb82f93 PJ |
1922 | doc: /* Return the window least recently selected or used for display. |
1923 | If optional argument FRAME is `visible', search all visible frames. | |
1924 | If FRAME is 0, search all visible and iconified frames. | |
1925 | If FRAME is t, search all frames. | |
1926 | If FRAME is nil, search only the selected frame. | |
1927 | If FRAME is a frame, search only that frame. */) | |
1928 | (frame) | |
1929 | Lisp_Object frame; | |
7ab12479 JB |
1930 | { |
1931 | register Lisp_Object w; | |
1932 | /* First try for a window that is full-width */ | |
89bca612 | 1933 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1934 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1935 | return w; |
1936 | /* If none of them, try the rest */ | |
89bca612 | 1937 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1938 | } |
1939 | ||
1940 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
fdb82f93 PJ |
1941 | doc: /* Return the largest window in area. |
1942 | If optional argument FRAME is `visible', search all visible frames. | |
1943 | If FRAME is 0, search all visible and iconified frames. | |
1944 | If FRAME is t, search all frames. | |
1945 | If FRAME is nil, search only the selected frame. | |
1946 | If FRAME is a frame, search only that frame. */) | |
1947 | (frame) | |
1948 | Lisp_Object frame; | |
7ab12479 JB |
1949 | { |
1950 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1951 | frame); |
7ab12479 JB |
1952 | } |
1953 | ||
1954 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 PJ |
1955 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
1956 | If optional argument FRAME is `visible', search all visible frames. | |
1957 | If optional argument FRAME is 0, search all visible and iconified frames. | |
1958 | If FRAME is t, search all frames. | |
1959 | If FRAME is nil, search only the selected frame. | |
1960 | If FRAME is a frame, search only that frame. */) | |
1961 | (buffer, frame) | |
1962 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1963 | { |
1964 | buffer = Fget_buffer (buffer); | |
017b2bad | 1965 | if (BUFFERP (buffer)) |
44fa5b1e | 1966 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1967 | else |
1968 | return Qnil; | |
1969 | } | |
1970 | ||
1971 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
1972 | 0, 1, "", |
1973 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
1974 | Only the frame WINDOW is on is affected. | |
1975 | This function tries to reduce display jumps | |
1976 | by keeping the text previously visible in WINDOW | |
1977 | in the same place on the frame. Doing this depends on | |
1978 | the value of (window-start WINDOW), so if calling this function | |
1979 | in a program gives strange scrolling, make sure the window-start | |
1980 | value is reasonable when this function is called. */) | |
1981 | (window) | |
7ab12479 JB |
1982 | Lisp_Object window; |
1983 | { | |
1984 | struct window *w; | |
00d3d838 | 1985 | int startpos; |
85fe3b5e | 1986 | int top, new_top; |
7ab12479 | 1987 | |
265a9e55 | 1988 | if (NILP (window)) |
7ab12479 JB |
1989 | window = selected_window; |
1990 | else | |
b7826503 | 1991 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 1992 | w = XWINDOW (window); |
a2b38b3c | 1993 | |
00d3d838 | 1994 | startpos = marker_position (w->start); |
5500c422 | 1995 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 1996 | |
a2b38b3c RS |
1997 | if (MINI_WINDOW_P (w) && top > 0) |
1998 | error ("Can't expand minibuffer to full frame"); | |
1999 | ||
70728a80 | 2000 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2001 | |
00d3d838 KH |
2002 | /* Try to minimize scrolling, by setting the window start to the point |
2003 | will cause the text at the old window start to be at the same place | |
2004 | on the frame. But don't try to do this if the window start is | |
2005 | outside the visible portion (as might happen when the display is | |
2006 | not current, due to typeahead). */ | |
85fe3b5e GM |
2007 | new_top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
2008 | if (new_top != top | |
2009 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2010 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2011 | { | |
2012 | struct position pos; | |
2013 | struct buffer *obuf = current_buffer; | |
2014 | ||
2015 | Fset_buffer (w->buffer); | |
2016 | /* This computation used to temporarily move point, but that can | |
2017 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2018 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2019 | |
b73ea88e | 2020 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2021 | w->window_end_valid = Qnil; |
b73ea88e RS |
2022 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2023 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2024 | : Qnil); |
80622eec RS |
2025 | /* We need to do this, so that the window-scroll-functions |
2026 | get called. */ | |
4d047f50 | 2027 | w->optional_new_start = Qt; |
00d3d838 KH |
2028 | |
2029 | set_buffer_internal (obuf); | |
2030 | } | |
5500c422 | 2031 | |
7ab12479 JB |
2032 | return Qnil; |
2033 | } | |
2034 | ||
2035 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2036 | 1, 2, "bDelete windows on (buffer): ", |
2037 | doc: /* Delete all windows showing BUFFER. | |
2038 | Optional second argument FRAME controls which frames are affected. | |
2039 | If optional argument FRAME is `visible', search all visible frames. | |
2040 | If FRAME is 0, search all visible and iconified frames. | |
2041 | If FRAME is nil, search all frames. | |
2042 | If FRAME is t, search only the selected frame. | |
2043 | If FRAME is a frame, search only that frame. */) | |
2044 | (buffer, frame) | |
26f6279d | 2045 | Lisp_Object buffer, frame; |
7ab12479 | 2046 | { |
26f6279d JB |
2047 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2048 | expects. */ | |
c520265e RS |
2049 | if (NILP (frame)) |
2050 | frame = Qt; | |
2051 | else if (EQ (frame, Qt)) | |
2052 | frame = Qnil; | |
26f6279d | 2053 | |
265a9e55 | 2054 | if (!NILP (buffer)) |
7ab12479 JB |
2055 | { |
2056 | buffer = Fget_buffer (buffer); | |
b7826503 | 2057 | CHECK_BUFFER (buffer); |
26f6279d | 2058 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2059 | } |
5500c422 | 2060 | |
7ab12479 JB |
2061 | return Qnil; |
2062 | } | |
2063 | ||
2064 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2065 | Sreplace_buffer_in_windows, |
2066 | 1, 1, "bReplace buffer in windows: ", | |
2067 | doc: /* Replace BUFFER with some other buffer in all windows showing it. */) | |
2068 | (buffer) | |
7ab12479 JB |
2069 | Lisp_Object buffer; |
2070 | { | |
265a9e55 | 2071 | if (!NILP (buffer)) |
7ab12479 JB |
2072 | { |
2073 | buffer = Fget_buffer (buffer); | |
b7826503 | 2074 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2075 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2076 | } | |
2077 | return Qnil; | |
2078 | } | |
ff58478b RS |
2079 | |
2080 | /* Replace BUFFER with some other buffer in all windows | |
2081 | of all frames, even those on other keyboards. */ | |
2082 | ||
2083 | void | |
2084 | replace_buffer_in_all_windows (buffer) | |
2085 | Lisp_Object buffer; | |
2086 | { | |
27abb84f | 2087 | #ifdef MULTI_KBOARD |
ff58478b RS |
2088 | Lisp_Object tail, frame; |
2089 | ||
ff58478b RS |
2090 | /* A single call to window_loop won't do the job |
2091 | because it only considers frames on the current keyboard. | |
2092 | So loop manually over frames, and handle each one. */ | |
2093 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2094 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2095 | #else |
db7f721d | 2096 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2097 | #endif |
2098 | } | |
7ab12479 JB |
2099 | \f |
2100 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2101 | |
2102 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2103 | might crash Emacs. */ | |
5500c422 | 2104 | |
a481b3ea JB |
2105 | #define MIN_SAFE_WINDOW_WIDTH (2) |
2106 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
2107 | ||
2108 | /* Make sure that window_min_height and window_min_width are | |
2109 | not too small; if they are, set them to safe minima. */ | |
2110 | ||
2111 | static void | |
2112 | check_min_window_sizes () | |
2113 | { | |
2114 | /* Smaller values might permit a crash. */ | |
2115 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2116 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2117 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2118 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2119 | } | |
2120 | ||
2121 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2122 | minimum allowable size. */ | |
5500c422 | 2123 | |
605be8af | 2124 | void |
a481b3ea | 2125 | check_frame_size (frame, rows, cols) |
605be8af JB |
2126 | FRAME_PTR frame; |
2127 | int *rows, *cols; | |
a481b3ea | 2128 | { |
628df3bf | 2129 | /* For height, we have to see: |
37962e60 | 2130 | whether the frame has a minibuffer, |
628df3bf JB |
2131 | whether it wants a mode line, and |
2132 | whether it has a menu bar. */ | |
a481b3ea | 2133 | int min_height = |
79f92720 JB |
2134 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
2135 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 2136 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
2137 | |
2138 | if (FRAME_TOP_MARGIN (frame) > 0) | |
2139 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2140 | |
2141 | if (*rows < min_height) | |
2142 | *rows = min_height; | |
2143 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2144 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2145 | } | |
2146 | ||
c1636aa6 | 2147 | |
233a4a2c GM |
2148 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2149 | check if W's width can be changed, otherwise check W's height. | |
2150 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2151 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2152 | either. */ | |
c1636aa6 | 2153 | |
233a4a2c GM |
2154 | static int |
2155 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2156 | struct window *w; | |
2157 | int width_p, check_siblings_p; | |
2158 | { | |
2159 | int fixed_p; | |
2160 | struct window *c; | |
2161 | ||
2162 | if (!NILP (w->hchild)) | |
2163 | { | |
2164 | c = XWINDOW (w->hchild); | |
2165 | ||
2166 | if (width_p) | |
2167 | { | |
2168 | /* A horiz. combination is fixed-width if all of if its | |
2169 | children are. */ | |
2170 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2171 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2172 | fixed_p = c == NULL; | |
2173 | } | |
2174 | else | |
2175 | { | |
2176 | /* A horiz. combination is fixed-height if one of if its | |
2177 | children is. */ | |
2178 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2179 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2180 | fixed_p = c != NULL; | |
2181 | } | |
2182 | } | |
2183 | else if (!NILP (w->vchild)) | |
2184 | { | |
2185 | c = XWINDOW (w->vchild); | |
2186 | ||
2187 | if (width_p) | |
2188 | { | |
2189 | /* A vert. combination is fixed-width if one of if its | |
2190 | children is. */ | |
2191 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2192 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2193 | fixed_p = c != NULL; | |
2194 | } | |
2195 | else | |
2196 | { | |
2197 | /* A vert. combination is fixed-height if all of if its | |
2198 | children are. */ | |
2199 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2200 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2201 | fixed_p = c == NULL; | |
2202 | } | |
2203 | } | |
2204 | else if (BUFFERP (w->buffer)) | |
2205 | { | |
a34dfd12 GM |
2206 | if (w->height_fixed_p && !width_p) |
2207 | fixed_p = 1; | |
2208 | else | |
233a4a2c | 2209 | { |
a34dfd12 GM |
2210 | struct buffer *old = current_buffer; |
2211 | Lisp_Object val; | |
2212 | ||
2213 | current_buffer = XBUFFER (w->buffer); | |
2214 | val = find_symbol_value (Qwindow_size_fixed); | |
2215 | current_buffer = old; | |
2216 | ||
2217 | fixed_p = 0; | |
2218 | if (!EQ (val, Qunbound)) | |
2219 | { | |
2220 | fixed_p = !NILP (val); | |
2221 | ||
2222 | if (fixed_p | |
2223 | && ((EQ (val, Qheight) && width_p) | |
2224 | || (EQ (val, Qwidth) && !width_p))) | |
2225 | fixed_p = 0; | |
2226 | } | |
233a4a2c GM |
2227 | } |
2228 | ||
2229 | /* Can't tell if this one is resizable without looking at | |
2230 | siblings. If all siblings are fixed-size this one is too. */ | |
2231 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2232 | { | |
2233 | Lisp_Object child; | |
2234 | ||
2235 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2236 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2237 | break; | |
2238 | ||
2239 | if (NILP (child)) | |
2240 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2241 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2242 | break; | |
2243 | ||
2244 | if (NILP (child)) | |
2245 | fixed_p = 1; | |
2246 | } | |
2247 | } | |
2248 | else | |
2249 | fixed_p = 1; | |
2250 | ||
2251 | return fixed_p; | |
2252 | } | |
2253 | ||
2254 | ||
2255 | /* Return the minimum size of window W, not taking fixed-width windows | |
2256 | into account. WIDTH_P non-zero means return the minimum width, | |
2257 | otherwise return the minimum height. If W is a combination window, | |
2258 | compute the minimum size from the minimum sizes of W's children. */ | |
2259 | ||
2260 | static int | |
2261 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2262 | struct window *w; |
2263 | int width_p; | |
2264 | { | |
233a4a2c | 2265 | struct window *c; |
c1636aa6 GM |
2266 | int size; |
2267 | ||
233a4a2c GM |
2268 | if (!NILP (w->hchild)) |
2269 | { | |
2270 | c = XWINDOW (w->hchild); | |
2271 | size = 0; | |
2272 | ||
2273 | if (width_p) | |
2274 | { | |
2275 | /* The min width of a horizontal combination is | |
2276 | the sum of the min widths of its children. */ | |
2277 | while (c) | |
2278 | { | |
2279 | size += window_min_size_1 (c, width_p); | |
2280 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2281 | } | |
2282 | } | |
2283 | else | |
2284 | { | |
2285 | /* The min height a horizontal combination equals | |
2286 | the maximum of all min height of its children. */ | |
2287 | while (c) | |
2288 | { | |
2289 | int min_size = window_min_size_1 (c, width_p); | |
2290 | size = max (min_size, size); | |
2291 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2292 | } | |
2293 | } | |
2294 | } | |
2295 | else if (!NILP (w->vchild)) | |
2296 | { | |
2297 | c = XWINDOW (w->vchild); | |
2298 | size = 0; | |
2299 | ||
2300 | if (width_p) | |
2301 | { | |
2302 | /* The min width of a vertical combination is | |
2303 | the maximum of the min widths of its children. */ | |
2304 | while (c) | |
2305 | { | |
2306 | int min_size = window_min_size_1 (c, width_p); | |
2307 | size = max (min_size, size); | |
2308 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2309 | } | |
2310 | } | |
2311 | else | |
2312 | { | |
2313 | /* The min height of a vertical combination equals | |
2314 | the sum of the min height of its children. */ | |
2315 | while (c) | |
2316 | { | |
2317 | size += window_min_size_1 (c, width_p); | |
2318 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2319 | } | |
2320 | } | |
2321 | } | |
c1636aa6 GM |
2322 | else |
2323 | { | |
233a4a2c GM |
2324 | if (width_p) |
2325 | size = window_min_width; | |
c1636aa6 | 2326 | else |
233a4a2c GM |
2327 | { |
2328 | if (MINI_WINDOW_P (w) | |
2329 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2330 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2331 | size = 1; |
2332 | else | |
2333 | size = window_min_height; | |
2334 | } | |
c1636aa6 GM |
2335 | } |
2336 | ||
2337 | return size; | |
2338 | } | |
2339 | ||
2340 | ||
233a4a2c GM |
2341 | /* Return the minimum size of window W, taking fixed-size windows into |
2342 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2343 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2344 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2345 | unless FIXED is null. */ | |
7ab12479 | 2346 | |
233a4a2c | 2347 | static int |
f984d4fc | 2348 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2349 | struct window *w; |
f984d4fc | 2350 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2351 | { |
2352 | int size, fixed_p; | |
2353 | ||
f984d4fc GM |
2354 | if (ignore_fixed_p) |
2355 | fixed_p = 0; | |
2356 | else | |
2357 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2358 | ||
233a4a2c GM |
2359 | if (fixed) |
2360 | *fixed = fixed_p; | |
2361 | ||
2362 | if (fixed_p) | |
2363 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2364 | else | |
2365 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2366 | |
233a4a2c GM |
2367 | return size; |
2368 | } | |
2369 | ||
2370 | ||
2371 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2372 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2373 | keep their proportionate size relative to WINDOW. Propagate | |
2374 | WINDOW's top or left edge position to children. Delete windows | |
2375 | that become too small unless NODELETE_P is non-zero. */ | |
2376 | ||
2377 | static void | |
2378 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2379 | Lisp_Object window; |
233a4a2c | 2380 | int size, width_p, nodelete_p; |
7ab12479 | 2381 | { |
233a4a2c GM |
2382 | struct window *w = XWINDOW (window); |
2383 | struct window *c; | |
2384 | Lisp_Object child, *forward, *sideward; | |
2385 | int old_size, min_size; | |
7ab12479 | 2386 | |
a481b3ea | 2387 | check_min_window_sizes (); |
7ae2f10f | 2388 | size = max (0, size); |
233a4a2c | 2389 | |
b5f05b50 GM |
2390 | /* If the window has been "too small" at one point, |
2391 | don't delete it for being "too small" in the future. | |
2392 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2393 | if (width_p) |
2394 | { | |
8b6d9dc9 | 2395 | old_size = XINT (w->width); |
233a4a2c GM |
2396 | min_size = window_min_width; |
2397 | } | |
2398 | else | |
2399 | { | |
8b6d9dc9 | 2400 | old_size = XINT (w->height); |
233a4a2c GM |
2401 | min_size = window_min_height; |
2402 | } | |
2403 | ||
f18625cd | 2404 | if (old_size < min_size) |
b5f05b50 GM |
2405 | w->too_small_ok = Qt; |
2406 | ||
233a4a2c GM |
2407 | /* Maybe delete WINDOW if it's too small. */ |
2408 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2409 | { |
b5f05b50 | 2410 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2411 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2412 | else |
233a4a2c | 2413 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2414 | |
233a4a2c | 2415 | if (size < min_size) |
c1636aa6 GM |
2416 | { |
2417 | delete_window (window); | |
2418 | return; | |
2419 | } | |
7ab12479 JB |
2420 | } |
2421 | ||
233a4a2c | 2422 | /* Set redisplay hints. */ |
7ae2f10f GM |
2423 | w->last_modified = make_number (0); |
2424 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2425 | windows_or_buffers_changed++; |
7ae2f10f | 2426 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2427 | |
233a4a2c GM |
2428 | if (width_p) |
2429 | { | |
2430 | sideward = &w->vchild; | |
2431 | forward = &w->hchild; | |
7ae2f10f | 2432 | w->width = make_number (size); |
233a4a2c GM |
2433 | } |
2434 | else | |
2435 | { | |
2436 | sideward = &w->hchild; | |
2437 | forward = &w->vchild; | |
7ae2f10f | 2438 | w->height = make_number (size); |
0130fe1a | 2439 | w->orig_height = Qnil; |
233a4a2c GM |
2440 | } |
2441 | ||
2442 | if (!NILP (*sideward)) | |
7ab12479 | 2443 | { |
233a4a2c | 2444 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2445 | { |
233a4a2c GM |
2446 | c = XWINDOW (child); |
2447 | if (width_p) | |
2448 | c->left = w->left; | |
2449 | else | |
2450 | c->top = w->top; | |
2451 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2452 | } |
2453 | } | |
233a4a2c | 2454 | else if (!NILP (*forward)) |
7ab12479 | 2455 | { |
233a4a2c GM |
2456 | int fixed_size, each, extra, n; |
2457 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2458 | int last_pos, first_pos, nchildren, total; |
233a4a2c GM |
2459 | |
2460 | /* Determine the fixed-size portion of the this window, and the | |
2461 | number of child windows. */ | |
8b6d9dc9 | 2462 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2463 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2464 | { |
8b6d9dc9 GM |
2465 | int child_size; |
2466 | ||
7ab12479 | 2467 | c = XWINDOW (child); |
8b6d9dc9 GM |
2468 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
2469 | total += child_size; | |
2470 | ||
233a4a2c GM |
2471 | if (window_fixed_size_p (c, width_p, 0)) |
2472 | { | |
8b6d9dc9 | 2473 | fixed_size += child_size; |
233a4a2c GM |
2474 | ++nfixed; |
2475 | } | |
2476 | } | |
7ab12479 | 2477 | |
233a4a2c GM |
2478 | /* If the new size is smaller than fixed_size, or if there |
2479 | aren't any resizable windows, allow resizing fixed-size | |
2480 | windows. */ | |
2481 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2482 | ||
2483 | /* Compute how many lines/columns to add to each child. The | |
2484 | value of extra takes care of rounding errors. */ | |
2485 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
8b6d9dc9 GM |
2486 | each = (size - total) / n; |
2487 | extra = (size - total) - n * each; | |
233a4a2c GM |
2488 | |
2489 | /* Compute new children heights and edge positions. */ | |
8b6d9dc9 | 2490 | first_pos = width_p ? XINT (w->left) : XINT (w->top); |
233a4a2c GM |
2491 | last_pos = first_pos; |
2492 | for (child = *forward; !NILP (child); child = c->next) | |
2493 | { | |
2494 | int new_size, old_size; | |
2495 | ||
2496 | c = XWINDOW (child); | |
2497 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2498 | new_size = old_size; | |
7ab12479 | 2499 | |
233a4a2c GM |
2500 | /* The top or left edge position of this child equals the |
2501 | bottom or right edge of its predecessor. */ | |
2502 | if (width_p) | |
2503 | c->left = make_number (last_pos); | |
2504 | else | |
2505 | c->top = make_number (last_pos); | |
7ab12479 | 2506 | |
233a4a2c GM |
2507 | /* If this child can be resized, do it. */ |
2508 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2509 | { | |
2510 | new_size = old_size + each + extra; | |
2511 | extra = 0; | |
2512 | } | |
2513 | ||
2514 | /* Set new height. Note that size_window also propagates | |
2515 | edge positions to children, so it's not a no-op if we | |
2516 | didn't change the child's size. */ | |
2517 | size_window (child, new_size, width_p, 1); | |
2518 | ||
2519 | /* Remember the bottom/right edge position of this child; it | |
2520 | will be used to set the top/left edge of the next child. */ | |
2521 | last_pos += new_size; | |
7ab12479 | 2522 | } |
233a4a2c GM |
2523 | |
2524 | /* We should have covered the parent exactly with child windows. */ | |
2525 | xassert (size == last_pos - first_pos); | |
2526 | ||
7ab12479 | 2527 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2528 | if (!nodelete_p) |
2529 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2530 | { |
233a4a2c GM |
2531 | int child_size; |
2532 | c = XWINDOW (child); | |
8b6d9dc9 | 2533 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
233a4a2c | 2534 | size_window (child, child_size, width_p, 0); |
7ab12479 JB |
2535 | } |
2536 | } | |
2537 | } | |
2538 | ||
233a4a2c GM |
2539 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2540 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2541 | that become too small in the process. (The caller should check | |
2542 | later and do so if appropriate.) */ | |
7ab12479 | 2543 | |
5e14b1fc | 2544 | void |
233a4a2c | 2545 | set_window_height (window, height, nodelete) |
7ab12479 | 2546 | Lisp_Object window; |
233a4a2c | 2547 | int height; |
7ab12479 JB |
2548 | int nodelete; |
2549 | { | |
233a4a2c GM |
2550 | size_window (window, height, 0, nodelete); |
2551 | } | |
7ab12479 | 2552 | |
7ab12479 | 2553 | |
233a4a2c GM |
2554 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2555 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2556 | that become too small in the process. (The caller should check | |
2557 | later and do so if appropriate.) */ | |
7ab12479 | 2558 | |
233a4a2c GM |
2559 | void |
2560 | set_window_width (window, width, nodelete) | |
2561 | Lisp_Object window; | |
2562 | int width; | |
2563 | int nodelete; | |
2564 | { | |
2565 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2566 | } |
233a4a2c | 2567 | |
7ab12479 | 2568 | \f |
1d8d96fa | 2569 | int window_select_count; |
7ab12479 | 2570 | |
5b03d3c0 RS |
2571 | Lisp_Object |
2572 | Fset_window_buffer_unwind (obuf) | |
2573 | Lisp_Object obuf; | |
2574 | { | |
2575 | Fset_buffer (obuf); | |
2576 | return Qnil; | |
2577 | } | |
2578 | ||
7ab12479 | 2579 | |
5500c422 GM |
2580 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2581 | means it's allowed to run hooks. See make_frame for a case where | |
2582 | it's not allowed. */ | |
7ab12479 | 2583 | |
5500c422 GM |
2584 | void |
2585 | set_window_buffer (window, buffer, run_hooks_p) | |
2586 | Lisp_Object window, buffer; | |
2587 | int run_hooks_p; | |
2588 | { | |
2589 | struct window *w = XWINDOW (window); | |
2590 | struct buffer *b = XBUFFER (buffer); | |
2591 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2592 | |
2593 | w->buffer = buffer; | |
86e48436 RS |
2594 | |
2595 | if (EQ (window, selected_window)) | |
5500c422 | 2596 | b->last_selected_window = window; |
beb4e312 RS |
2597 | |
2598 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2599 | if (INTEGERP (b->display_count)) |
2600 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2601 | b->display_time = Fcurrent_time (); | |
86e48436 | 2602 | |
d834a2e9 | 2603 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2604 | XSETFASTINT (w->window_end_vpos, 0); |
2605 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2606 | w->window_end_valid = Qnil; |
1c686c99 | 2607 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 2608 | w->vscroll = 0; |
5500c422 | 2609 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2610 | set_marker_restricted (w->start, |
5500c422 | 2611 | make_number (b->last_window_start), |
7ab12479 JB |
2612 | buffer); |
2613 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2614 | w->force_start = Qnil; |
d834a2e9 | 2615 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2616 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2617 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2618 | |
2619 | /* We must select BUFFER for running the window-scroll-functions. | |
2620 | If WINDOW is selected, switch permanently. | |
2621 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2622 | if (EQ (window, selected_window)) |
2623 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2624 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2625 | because that might itself be a local variable. */ | |
2626 | else if (window_initialized) | |
2627 | { | |
2628 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2629 | Fset_buffer (buffer); | |
2630 | } | |
2631 | ||
5500c422 | 2632 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2633 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2634 | |
5500c422 GM |
2635 | if (run_hooks_p) |
2636 | { | |
2637 | if (! NILP (Vwindow_scroll_functions)) | |
2638 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2639 | Fmarker_position (w->start)); | |
2640 | ||
2641 | if (! NILP (Vwindow_configuration_change_hook) | |
2642 | && ! NILP (Vrun_hooks)) | |
2643 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2644 | } | |
543f5fb1 | 2645 | |
5b03d3c0 | 2646 | unbind_to (count, Qnil); |
5500c422 | 2647 | } |
5b03d3c0 | 2648 | |
5500c422 GM |
2649 | |
2650 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
fdb82f93 PJ |
2651 | doc: /* Make WINDOW display BUFFER as its contents. |
2652 | BUFFER can be a buffer or buffer name. */) | |
2653 | (window, buffer) | |
5500c422 GM |
2654 | register Lisp_Object window, buffer; |
2655 | { | |
2656 | register Lisp_Object tem; | |
2657 | register struct window *w = decode_window (window); | |
5500c422 | 2658 | |
bed0c171 | 2659 | XSETWINDOW (window, w); |
5500c422 | 2660 | buffer = Fget_buffer (buffer); |
b7826503 | 2661 | CHECK_BUFFER (buffer); |
5500c422 GM |
2662 | |
2663 | if (NILP (XBUFFER (buffer)->name)) | |
2664 | error ("Attempt to display deleted buffer"); | |
2665 | ||
2666 | tem = w->buffer; | |
2667 | if (NILP (tem)) | |
2668 | error ("Window is deleted"); | |
2669 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2670 | is first being set up. */ | |
2671 | { | |
2672 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2673 | error ("Window is dedicated to `%s'", | |
2674 | XSTRING (XBUFFER (tem)->name)->data); | |
2675 | ||
2676 | unshow_buffer (w); | |
2677 | } | |
2678 | ||
2679 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2680 | return Qnil; |
2681 | } | |
2682 | ||
2683 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
fdb82f93 PJ |
2684 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
2685 | If WINDOW is not already selected, also make WINDOW's buffer current. | |
2686 | Note that the main editor command loop | |
2687 | selects the buffer of the selected window before each command. */) | |
2688 | (window) | |
7ab12479 | 2689 | register Lisp_Object window; |
b7354ddf RS |
2690 | { |
2691 | return select_window_1 (window, 1); | |
2692 | } | |
2693 | \f | |
719eaeb1 GM |
2694 | /* Note that selected_window can be nil |
2695 | when this is called from Fset_window_configuration. */ | |
2696 | ||
b7354ddf RS |
2697 | static Lisp_Object |
2698 | select_window_1 (window, recordflag) | |
2699 | register Lisp_Object window; | |
2700 | int recordflag; | |
7ab12479 JB |
2701 | { |
2702 | register struct window *w; | |
719eaeb1 | 2703 | register struct window *ow; |
1ae1a37d | 2704 | struct frame *sf; |
7ab12479 | 2705 | |
b7826503 | 2706 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
2707 | |
2708 | w = XWINDOW (window); | |
50e88778 | 2709 | w->frozen_window_start_p = 0; |
7ab12479 | 2710 | |
d834a2e9 | 2711 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2712 | if (EQ (window, selected_window)) |
2713 | return window; | |
2714 | ||
719eaeb1 GM |
2715 | if (!NILP (selected_window)) |
2716 | { | |
2717 | ow = XWINDOW (selected_window); | |
2718 | if (! NILP (ow->buffer)) | |
2719 | set_marker_both (ow->pointm, ow->buffer, | |
2720 | BUF_PT (XBUFFER (ow->buffer)), | |
2721 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2722 | } | |
7ab12479 JB |
2723 | |
2724 | selected_window = window; | |
1ae1a37d GM |
2725 | sf = SELECTED_FRAME (); |
2726 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2727 | { |
44fa5b1e | 2728 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2729 | /* Use this rather than Fhandle_switch_frame |
2730 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2731 | move around in the state where a minibuffer in a separate | |
2732 | frame is active. */ | |
2733 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2734 | } |
2735 | else | |
1ae1a37d | 2736 | sf->selected_window = window; |
7ab12479 | 2737 | |
b7354ddf RS |
2738 | if (recordflag) |
2739 | record_buffer (w->buffer); | |
7ab12479 JB |
2740 | Fset_buffer (w->buffer); |
2741 | ||
86e48436 RS |
2742 | XBUFFER (w->buffer)->last_selected_window = window; |
2743 | ||
7ab12479 JB |
2744 | /* Go to the point recorded in the window. |
2745 | This is important when the buffer is in more | |
2746 | than one window. It also matters when | |
2747 | redisplay_window has altered point after scrolling, | |
2748 | because it makes the change only in the window. */ | |
2749 | { | |
2750 | register int new_point = marker_position (w->pointm); | |
2751 | if (new_point < BEGV) | |
2752 | SET_PT (BEGV); | |
a9c95e08 | 2753 | else if (new_point > ZV) |
7ab12479 JB |
2754 | SET_PT (ZV); |
2755 | else | |
2756 | SET_PT (new_point); | |
2757 | } | |
2758 | ||
2759 | windows_or_buffers_changed++; | |
2760 | return window; | |
2761 | } | |
b7354ddf | 2762 | \f |
441a127e RS |
2763 | /* Deiconify the frame containing the window WINDOW, |
2764 | unless it is the selected frame; | |
2765 | then return WINDOW. | |
2766 | ||
2767 | The reason for the exception for the selected frame | |
2768 | is that it seems better not to change the selected frames visibility | |
2769 | merely because of displaying a different buffer in it. | |
2770 | The deiconification is useful when a buffer gets shown in | |
2771 | another frame that you were not using lately. */ | |
d07f802a RS |
2772 | |
2773 | static Lisp_Object | |
2774 | display_buffer_1 (window) | |
2775 | Lisp_Object window; | |
2776 | { | |
1ae1a37d GM |
2777 | Lisp_Object frame = XWINDOW (window)->frame; |
2778 | FRAME_PTR f = XFRAME (frame); | |
2779 | ||
d07f802a | 2780 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2781 | |
2782 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2783 | { |
2784 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2785 | Fmake_frame_visible (frame); |
37962e60 | 2786 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2787 | Fraise_frame (frame); |
60117126 | 2788 | } |
1ae1a37d | 2789 | |
d07f802a RS |
2790 | return window; |
2791 | } | |
2792 | ||
4628f7a4 | 2793 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
fdb82f93 PJ |
2794 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would be created specially. |
2795 | The value is actually t if the frame should be called with default frame | |
2796 | parameters, and a list of frame parameters if they were specified. | |
2797 | See `special-display-buffer-names', and `special-display-regexps'. */) | |
2798 | (buffer_name) | |
4628f7a4 EN |
2799 | Lisp_Object buffer_name; |
2800 | { | |
2801 | Lisp_Object tem; | |
2802 | ||
b7826503 | 2803 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2804 | |
2805 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2806 | if (!NILP (tem)) | |
2807 | return Qt; | |
2808 | ||
2809 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2810 | if (!NILP (tem)) | |
2811 | return XCDR (tem); | |
2812 | ||
2813 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2814 | { | |
2815 | Lisp_Object car = XCAR (tem); | |
2816 | if (STRINGP (car) | |
2817 | && fast_string_match (car, buffer_name) >= 0) | |
2818 | return Qt; | |
2819 | else if (CONSP (car) | |
2820 | && STRINGP (XCAR (car)) | |
2821 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2822 | return XCDR (car); |
4628f7a4 EN |
2823 | } |
2824 | return Qnil; | |
2825 | } | |
2826 | ||
2827 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
fdb82f93 PJ |
2828 | doc: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window. |
2829 | See `same-window-buffer-names' and `same-window-regexps'. */) | |
2830 | (buffer_name) | |
4628f7a4 EN |
2831 | Lisp_Object buffer_name; |
2832 | { | |
2833 | Lisp_Object tem; | |
2834 | ||
b7826503 | 2835 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2836 | |
2837 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2838 | if (!NILP (tem)) | |
2839 | return Qt; | |
2840 | ||
2841 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2842 | if (!NILP (tem)) | |
2843 | return Qt; | |
2844 | ||
2845 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2846 | { | |
2847 | Lisp_Object car = XCAR (tem); | |
2848 | if (STRINGP (car) | |
2849 | && fast_string_match (car, buffer_name) >= 0) | |
2850 | return Qt; | |
2851 | else if (CONSP (car) | |
2852 | && STRINGP (XCAR (car)) | |
2853 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2854 | return Qt; | |
2855 | } | |
2856 | return Qnil; | |
2857 | } | |
2858 | ||
fdb82f93 | 2859 | /* Use B so the default is (other-buffer). */ |
53f76081 | 2860 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
2861 | "BDisplay buffer: \nP", |
2862 | doc: /* Make BUFFER appear in some window but don't select it. | |
2863 | BUFFER can be a buffer or a buffer name. | |
2864 | If BUFFER is shown already in some window, just use that one, | |
2865 | unless the window is the selected window and the optional second | |
2866 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
2867 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
2868 | Returns the window displaying BUFFER. | |
2869 | If `display-reuse-frames' is non-nil, and another frame is currently | |
2870 | displaying BUFFER, then simply raise that frame. | |
2871 | ||
2872 | The variables `special-display-buffer-names', `special-display-regexps', | |
2873 | `same-window-buffer-names', and `same-window-regexps' customize how certain | |
2874 | buffer names are handled. | |
2875 | ||
2876 | If optional argument FRAME is `visible', search all visible frames. | |
2877 | If FRAME is 0, search all visible and iconified frames. | |
2878 | If FRAME is t, search all frames. | |
2879 | If FRAME is a frame, search only that frame. | |
2880 | If FRAME is nil, search only the selected frame | |
2881 | (actually the last nonminibuffer frame), | |
2882 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
2883 | which means search visible and iconified frames. | |
2884 | ||
2885 | If `even-window-heights' is non-nil, window heights will be evened out | |
2886 | if displaying the buffer causes two vertically adjacent windows to be | |
2887 | displayed. */) | |
2888 | (buffer, not_this_window, frame) | |
53f76081 | 2889 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 2890 | { |
aee631c2 | 2891 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2892 | struct frame *f; |
7ab12479 | 2893 | |
aee631c2 | 2894 | swp = Qnil; |
7ab12479 | 2895 | buffer = Fget_buffer (buffer); |
b7826503 | 2896 | CHECK_BUFFER (buffer); |
7ab12479 | 2897 | |
265a9e55 | 2898 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2899 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2900 | ||
265a9e55 | 2901 | if (NILP (not_this_window) |
7ab12479 | 2902 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2903 | return display_buffer_1 (selected_window); |
7ab12479 | 2904 | |
855d8627 RS |
2905 | /* See if the user has specified this buffer should appear |
2906 | in the selected window. */ | |
2907 | if (NILP (not_this_window)) | |
2908 | { | |
aee631c2 RS |
2909 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2910 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2911 | { |
2912 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2913 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2914 | } |
855d8627 RS |
2915 | } |
2916 | ||
9c3da604 | 2917 | /* If the user wants pop-up-frames or display-reuse-frames, then |
73dc5198 KH |
2918 | look for a window showing BUFFER on any visible or iconified frame. |
2919 | Otherwise search only the current frame. */ | |
53f76081 RS |
2920 | if (! NILP (frame)) |
2921 | tem = frame; | |
9c3da604 GM |
2922 | else if (pop_up_frames |
2923 | || display_buffer_reuse_frames | |
2924 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2925 | XSETFASTINT (tem, 0); |
2926 | else | |
73dc5198 | 2927 | XSETFRAME (tem, last_nonminibuf_frame); |
9c3da604 | 2928 | |
73dc5198 | 2929 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
2930 | if (!NILP (window) |
2931 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 2932 | return display_buffer_1 (window); |
7ab12479 | 2933 | |
a90712c2 | 2934 | /* Certain buffer names get special handling. */ |
aee631c2 | 2935 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2936 | { |
4628f7a4 EN |
2937 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2938 | if (EQ (tem, Qt)) | |
a90712c2 | 2939 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2940 | if (CONSP (tem)) |
2941 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2942 | } |
2943 | ||
44fa5b1e JB |
2944 | /* If there are no frames open that have more than a minibuffer, |
2945 | we need to create a new frame. */ | |
2946 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2947 | { |
a90712c2 | 2948 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2949 | Fset_window_buffer (window, buffer); |
d07f802a | 2950 | return display_buffer_1 (window); |
7ab12479 | 2951 | } |
7ab12479 | 2952 | |
1ae1a37d | 2953 | f = SELECTED_FRAME (); |
43bad991 | 2954 | if (pop_up_windows |
1ae1a37d | 2955 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2956 | /* If the current frame is a special display frame, |
2957 | don't try to reuse its windows. */ | |
1ae1a37d | 2958 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2959 | { |
12cae7c0 KH |
2960 | Lisp_Object frames; |
2961 | ||
37962e60 | 2962 | frames = Qnil; |
1ae1a37d | 2963 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2964 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2965 | /* Don't try to create a window if would get an error */ |
2966 | if (split_height_threshold < window_min_height << 1) | |
2967 | split_height_threshold = window_min_height << 1; | |
2968 | ||
cee67da9 RS |
2969 | /* Note that both Fget_largest_window and Fget_lru_window |
2970 | ignore minibuffers and dedicated windows. | |
2971 | This means they can return nil. */ | |
7ab12479 | 2972 | |
cee67da9 RS |
2973 | /* If the frame we would try to split cannot be split, |
2974 | try other frames. */ | |
1ae1a37d | 2975 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
2976 | { |
2977 | /* Try visible frames first. */ | |
2978 | window = Fget_largest_window (Qvisible); | |
2979 | /* If that didn't work, try iconified frames. */ | |
2980 | if (NILP (window)) | |
2981 | window = Fget_largest_window (make_number (0)); | |
2982 | if (NILP (window)) | |
2983 | window = Fget_largest_window (Qt); | |
2984 | } | |
2985 | else | |
2986 | window = Fget_largest_window (frames); | |
2987 | ||
92cca945 RS |
2988 | /* If we got a tall enough full-width window that can be split, |
2989 | split it. */ | |
265a9e55 | 2990 | if (!NILP (window) |
92cca945 | 2991 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2992 | && window_height (window) >= split_height_threshold |
111e5992 | 2993 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2994 | window = Fsplit_window (window, Qnil, Qnil); |
2995 | else | |
2996 | { | |
1942f68f RS |
2997 | Lisp_Object upper, lower, other; |
2998 | ||
44fa5b1e | 2999 | window = Fget_lru_window (frames); |
92cca945 RS |
3000 | /* If the LRU window is selected, and big enough, |
3001 | and can be split, split it. */ | |
cee67da9 | 3002 | if (!NILP (window) |
92cca945 | 3003 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3004 | && (EQ (window, selected_window) |
3005 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3006 | && window_height (window) >= window_min_height << 1) |
3007 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3008 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3009 | |
cee67da9 | 3010 | /* Try visible frames first. */ |
48d9379d RS |
3011 | if (NILP (window)) |
3012 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3013 | if (NILP (window)) |
3014 | window = Fget_largest_window (Qvisible); | |
3015 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3016 | if (NILP (window)) |
3017 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3018 | if (NILP (window)) |
3019 | window = Fget_largest_window (make_number (0)); | |
3020 | /* Try invisible frames. */ | |
48d9379d RS |
3021 | if (NILP (window)) |
3022 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3023 | if (NILP (window)) |
3024 | window = Fget_largest_window (Qt); | |
3025 | /* As a last resort, make a new frame. */ | |
3026 | if (NILP (window)) | |
3027 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3028 | /* If window appears above or below another, |
3029 | even out their heights. */ | |
cac66e4f | 3030 | other = upper = lower = Qnil; |
1942f68f RS |
3031 | if (!NILP (XWINDOW (window)->prev)) |
3032 | other = upper = XWINDOW (window)->prev, lower = window; | |
3033 | if (!NILP (XWINDOW (window)->next)) | |
3034 | other = lower = XWINDOW (window)->next, upper = window; | |
3035 | if (!NILP (other) | |
6529ed87 | 3036 | && !NILP (Veven_window_heights) |
1942f68f | 3037 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
296b535c KH |
3038 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
3039 | && (XFASTINT (XWINDOW (other)->height) | |
3040 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 3041 | { |
296b535c KH |
3042 | int total = (XFASTINT (XWINDOW (other)->height) |
3043 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
3044 | enlarge_window (upper, |
3045 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 3046 | 0); |
1942f68f | 3047 | } |
7ab12479 JB |
3048 | } |
3049 | } | |
3050 | else | |
3051 | window = Fget_lru_window (Qnil); | |
3052 | ||
3053 | Fset_window_buffer (window, buffer); | |
d07f802a | 3054 | return display_buffer_1 (window); |
7ab12479 JB |
3055 | } |
3056 | ||
3057 | void | |
3058 | temp_output_buffer_show (buf) | |
3059 | register Lisp_Object buf; | |
3060 | { | |
3061 | register struct buffer *old = current_buffer; | |
3062 | register Lisp_Object window; | |
3063 | register struct window *w; | |
3064 | ||
bccd3dd1 RS |
3065 | XBUFFER (buf)->directory = current_buffer->directory; |
3066 | ||
7ab12479 | 3067 | Fset_buffer (buf); |
c6367666 | 3068 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3069 | BEGV = BEG; |
3070 | ZV = Z; | |
3071 | SET_PT (BEG); | |
b1599b4c | 3072 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
3073 | set_buffer_internal (old); |
3074 | ||
3075 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3076 | call1 (Vtemp_buffer_show_function, buf); | |
3077 | else | |
3078 | { | |
53f76081 | 3079 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3080 | |
1ae1a37d | 3081 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3082 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3083 | Vminibuf_scroll_window = window; |
3084 | w = XWINDOW (window); | |
d834a2e9 | 3085 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3086 | XSETFASTINT (w->min_hscroll, 0); |
b73ea88e RS |
3087 | set_marker_restricted_both (w->start, buf, 1, 1); |
3088 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3089 | |
beb4e312 RS |
3090 | /* Run temp-buffer-show-hook, with the chosen window selected |
3091 | and it sbuffer current. */ | |
f52cca03 | 3092 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3093 | { |
f52cca03 RS |
3094 | Lisp_Object tem; |
3095 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3096 | if (!NILP (tem)) |
3097 | { | |
f52cca03 RS |
3098 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3099 | if (!NILP (tem)) | |
3100 | { | |
3101 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
3102 | Lisp_Object prev_window; |
3103 | prev_window = selected_window; | |
2cccc823 | 3104 | |
f52cca03 | 3105 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 3106 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 3107 | select_window_1 (window, 0); |
beb4e312 | 3108 | Fset_buffer (w->buffer); |
f52cca03 | 3109 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 3110 | select_window_1 (prev_window, 0); |
f52cca03 RS |
3111 | unbind_to (count, Qnil); |
3112 | } | |
2cccc823 RS |
3113 | } |
3114 | } | |
3115 | } | |
7ab12479 JB |
3116 | } |
3117 | \f | |
dfcf069d | 3118 | static void |
7ab12479 JB |
3119 | make_dummy_parent (window) |
3120 | Lisp_Object window; | |
3121 | { | |
cffec418 | 3122 | Lisp_Object new; |
7ab12479 | 3123 | register struct window *o, *p; |
cffec418 | 3124 | int i; |
7ab12479 | 3125 | |
cffec418 | 3126 | o = XWINDOW (window); |
26605be9 | 3127 | p = allocate_window (); |
cffec418 | 3128 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3129 | ((struct Lisp_Vector *) p)->contents[i] |
3130 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3131 | XSETWINDOW (new, p); |
7ab12479 | 3132 | |
d834a2e9 | 3133 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3134 | |
3135 | /* Put new into window structure in place of window */ | |
3136 | replace_window (window, new); | |
3137 | ||
3138 | o->next = Qnil; | |
3139 | o->prev = Qnil; | |
3140 | o->vchild = Qnil; | |
3141 | o->hchild = Qnil; | |
3142 | o->parent = new; | |
3143 | ||
3144 | p->start = Qnil; | |
3145 | p->pointm = Qnil; | |
3146 | p->buffer = Qnil; | |
3147 | } | |
3148 | ||
3149 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3150 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3151 | WINDOW defaults to selected one and SIZE to half its size. | |
3152 | If optional third arg HORFLAG is non-nil, split side by side | |
3153 | and put SIZE columns in the first of the pair. In that case, | |
3154 | SIZE includes that window's scroll bar, or the divider column to its right. */) | |
3155 | (window, size, horflag) | |
77ae0fe3 | 3156 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3157 | { |
3158 | register Lisp_Object new; | |
3159 | register struct window *o, *p; | |
c0807608 | 3160 | FRAME_PTR fo; |
77ae0fe3 | 3161 | register int size_int; |
7ab12479 | 3162 | |
265a9e55 | 3163 | if (NILP (window)) |
7ab12479 JB |
3164 | window = selected_window; |
3165 | else | |
b7826503 | 3166 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3167 | |
3168 | o = XWINDOW (window); | |
c0807608 | 3169 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3170 | |
77ae0fe3 | 3171 | if (NILP (size)) |
7ab12479 | 3172 | { |
265a9e55 | 3173 | if (!NILP (horflag)) |
c0807608 | 3174 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3175 | the usable space in columns by two. |
3176 | We round up, since the left-hand window may include | |
3177 | a dividing line, while the right-hand may not. */ | |
3178 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3179 | else |
77ae0fe3 | 3180 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3181 | } |
3182 | else | |
3183 | { | |
b7826503 | 3184 | CHECK_NUMBER (size); |
77ae0fe3 | 3185 | size_int = XINT (size); |
7ab12479 JB |
3186 | } |
3187 | ||
3188 | if (MINI_WINDOW_P (o)) | |
3189 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3190 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3191 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3192 | |
a481b3ea | 3193 | check_min_window_sizes (); |
7ab12479 | 3194 | |
265a9e55 | 3195 | if (NILP (horflag)) |
7ab12479 | 3196 | { |
77ae0fe3 KH |
3197 | if (size_int < window_min_height) |
3198 | error ("Window height %d too small (after splitting)", size_int); | |
3199 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3200 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3201 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3202 | if (NILP (o->parent) |
3203 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3204 | { |
3205 | make_dummy_parent (window); | |
3206 | new = o->parent; | |
3207 | XWINDOW (new)->vchild = window; | |
3208 | } | |
3209 | } | |
3210 | else | |
3211 | { | |
77ae0fe3 KH |
3212 | if (size_int < window_min_width) |
3213 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3214 | |
3215 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3216 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3217 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3218 | if (NILP (o->parent) |
3219 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3220 | { |
3221 | make_dummy_parent (window); | |
3222 | new = o->parent; | |
3223 | XWINDOW (new)->hchild = window; | |
3224 | } | |
3225 | } | |
3226 | ||
3227 | /* Now we know that window's parent is a vertical combination | |
3228 | if we are dividing vertically, or a horizontal combination | |
3229 | if we are making side-by-side windows */ | |
3230 | ||
3231 | windows_or_buffers_changed++; | |
c0807608 | 3232 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3233 | new = make_window (); |
3234 | p = XWINDOW (new); | |
3235 | ||
44fa5b1e | 3236 | p->frame = o->frame; |
7ab12479 | 3237 | p->next = o->next; |
265a9e55 | 3238 | if (!NILP (p->next)) |
7ab12479 JB |
3239 | XWINDOW (p->next)->prev = new; |
3240 | p->prev = window; | |
3241 | o->next = new; | |
3242 | p->parent = o->parent; | |
3243 | p->buffer = Qt; | |
5500c422 GM |
3244 | p->window_end_valid = Qnil; |
3245 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3246 | |
44fa5b1e | 3247 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3248 | |
265a9e55 | 3249 | if (!NILP (horflag)) |
7ab12479 JB |
3250 | { |
3251 | p->height = o->height; | |
3252 | p->top = o->top; | |
a59fed7e | 3253 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3254 | XSETFASTINT (o->width, size_int); |
3255 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3256 | } |
3257 | else | |
3258 | { | |
3259 | p->left = o->left; | |
3260 | p->width = o->width; | |
77ae0fe3 KH |
3261 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3262 | XSETFASTINT (o->height, size_int); | |
3263 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3264 | } |
3265 | ||
5500c422 GM |
3266 | /* Adjust glyph matrices. */ |
3267 | adjust_glyphs (fo); | |
543f5fb1 | 3268 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3269 | return new; |
3270 | } | |
3271 | \f | |
3272 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
fdb82f93 PJ |
3273 | doc: /* Make current window ARG lines bigger. |
3274 | From program, optional second arg non-nil means grow sideways ARG columns. | |
3275 | Interactively, if an argument is not given, make the window one line bigger. */) | |
3276 | (arg, side) | |
413430c5 | 3277 | register Lisp_Object arg, side; |
7ab12479 | 3278 | { |
b7826503 | 3279 | CHECK_NUMBER (arg); |
86c8e823 | 3280 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3281 | |
3282 | if (! NILP (Vwindow_configuration_change_hook)) | |
3283 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3284 | ||
7ab12479 JB |
3285 | return Qnil; |
3286 | } | |
3287 | ||
3288 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
fdb82f93 PJ |
3289 | doc: /* Make current window ARG lines smaller. |
3290 | From program, optional second arg non-nil means shrink sideways arg columns. | |
3291 | Interactively, if an argument is not given, make the window one line smaller. */) | |
3292 | (arg, side) | |
413430c5 | 3293 | register Lisp_Object arg, side; |
7ab12479 | 3294 | { |
b7826503 | 3295 | CHECK_NUMBER (arg); |
86c8e823 | 3296 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3297 | |
3298 | if (! NILP (Vwindow_configuration_change_hook)) | |
3299 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3300 | ||
7ab12479 JB |
3301 | return Qnil; |
3302 | } | |
3303 | ||
3304 | int | |
3305 | window_height (window) | |
3306 | Lisp_Object window; | |
3307 | { | |
3308 | register struct window *p = XWINDOW (window); | |
3309 | return XFASTINT (p->height); | |
3310 | } | |
3311 | ||
3312 | int | |
3313 | window_width (window) | |
3314 | Lisp_Object window; | |
3315 | { | |
3316 | register struct window *p = XWINDOW (window); | |
3317 | return XFASTINT (p->width); | |
3318 | } | |
3319 | ||
c1636aa6 | 3320 | |
7ab12479 | 3321 | #define CURBEG(w) \ |
3578db3c | 3322 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3323 | |
3324 | #define CURSIZE(w) \ | |
3578db3c | 3325 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3326 | |
233a4a2c GM |
3327 | |
3328 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3329 | increase its width. Siblings of the selected window are resized to | |
3330 | fullfil the size request. If they become too small in the process, | |
3331 | they will be deleted. */ | |
7ab12479 | 3332 | |
f984d4fc | 3333 | static void |
86c8e823 GM |
3334 | enlarge_window (window, delta, widthflag) |
3335 | Lisp_Object window; | |
233a4a2c | 3336 | int delta, widthflag; |
7ab12479 | 3337 | { |
86c8e823 | 3338 | Lisp_Object parent, next, prev; |
233a4a2c | 3339 | struct window *p; |
3578db3c KR |
3340 | Lisp_Object *sizep; |
3341 | int maximum; | |
5e14b1fc AS |
3342 | int (*sizefun) P_ ((Lisp_Object)) |
3343 | = widthflag ? window_width : window_height; | |
233a4a2c | 3344 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3345 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3346 | |
233a4a2c GM |
3347 | /* Check values of window_min_width and window_min_height for |
3348 | validity. */ | |
a481b3ea | 3349 | check_min_window_sizes (); |
7ab12479 | 3350 | |
233a4a2c | 3351 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3352 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3353 | error ("Window is not resizable"); | |
3354 | ||
3355 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3356 | while (1) |
3357 | { | |
3358 | p = XWINDOW (window); | |
3359 | parent = p->parent; | |
233a4a2c | 3360 | |
265a9e55 | 3361 | if (NILP (parent)) |
7ab12479 JB |
3362 | { |
3363 | if (widthflag) | |
3364 | error ("No other window to side of this one"); | |
3365 | break; | |
3366 | } | |
233a4a2c GM |
3367 | |
3368 | if (widthflag | |
3369 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3370 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3371 | break; |
233a4a2c | 3372 | |
7ab12479 JB |
3373 | window = parent; |
3374 | } | |
3375 | ||
05c2896a | 3376 | sizep = &CURSIZE (window); |
7ab12479 | 3377 | |
7ab12479 JB |
3378 | { |
3379 | register int maxdelta; | |
7ab12479 | 3380 | |
3578db3c | 3381 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
c1636aa6 GM |
3382 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3383 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3384 | widthflag, 0, 0)) |
c1636aa6 GM |
3385 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3386 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3387 | widthflag, 0, 0)) |
44fa5b1e JB |
3388 | /* This is a frame with only one window, a minibuffer-only |
3389 | or a minibufferless frame. */ | |
d5783c40 | 3390 | : (delta = 0)); |
7ab12479 JB |
3391 | |
3392 | if (delta > maxdelta) | |
3393 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3394 | the full frame, or make the only window aside from the |
3395 | minibuffer the full frame. */ | |
7ab12479 | 3396 | delta = maxdelta; |
6b54027b | 3397 | } |
d5783c40 | 3398 | |
3578db3c | 3399 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3400 | { |
543f5fb1 | 3401 | delete_window (window); |
d5783c40 | 3402 | return; |
6b54027b RS |
3403 | } |
3404 | ||
3405 | if (delta == 0) | |
3406 | return; | |
7ab12479 | 3407 | |
db98a733 RS |
3408 | /* Find the total we can get from other siblings. */ |
3409 | maximum = 0; | |
3410 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3411 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3412 | widthflag, 0, 0); |
db98a733 | 3413 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3414 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3415 | widthflag, 0, 0); |
db98a733 RS |
3416 | |
3417 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3418 | if (delta <= maximum) |
7ab12479 | 3419 | { |
db98a733 RS |
3420 | Lisp_Object first_unaffected; |
3421 | Lisp_Object first_affected; | |
233a4a2c | 3422 | int fixed_p; |
db98a733 RS |
3423 | |
3424 | next = p->next; | |
3425 | prev = p->prev; | |
3426 | first_affected = window; | |
3427 | /* Look at one sibling at a time, | |
3428 | moving away from this window in both directions alternately, | |
3429 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3430 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3431 | { |
db98a733 RS |
3432 | if (! NILP (next)) |
3433 | { | |
c1636aa6 | 3434 | int this_one = ((*sizefun) (next) |
233a4a2c | 3435 | - window_min_size (XWINDOW (next), |
f984d4fc | 3436 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3437 | if (!fixed_p) |
3438 | { | |
3439 | if (this_one > delta) | |
3440 | this_one = delta; | |
3441 | ||
3442 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3443 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3444 | |
233a4a2c GM |
3445 | delta -= this_one; |
3446 | } | |
3447 | ||
db98a733 RS |
3448 | next = XWINDOW (next)->next; |
3449 | } | |
233a4a2c | 3450 | |
db98a733 RS |
3451 | if (delta == 0) |
3452 | break; | |
233a4a2c | 3453 | |
db98a733 RS |
3454 | if (! NILP (prev)) |
3455 | { | |
c1636aa6 | 3456 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3457 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3458 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3459 | if (!fixed_p) |
3460 | { | |
3461 | if (this_one > delta) | |
3462 | this_one = delta; | |
3463 | ||
3464 | first_affected = prev; | |
3465 | ||
3466 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3467 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3468 | |
3469 | delta -= this_one; | |
3470 | } | |
3471 | ||
db98a733 RS |
3472 | prev = XWINDOW (prev)->prev; |
3473 | } | |
3474 | } | |
3475 | ||
233a4a2c GM |
3476 | xassert (delta == 0); |
3477 | ||
db98a733 RS |
3478 | /* Now recalculate the edge positions of all the windows affected, |
3479 | based on the new sizes. */ | |
3480 | first_unaffected = next; | |
3481 | prev = first_affected; | |
3482 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3483 | prev = next, next = XWINDOW (next)->next) | |
3484 | { | |
3578db3c | 3485 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3486 | /* This does not change size of NEXT, |
3487 | but it propagates the new top edge to its children */ | |
3488 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3489 | } | |
7ab12479 JB |
3490 | } |
3491 | else | |
3492 | { | |
3493 | register int delta1; | |
3494 | register int opht = (*sizefun) (parent); | |
3495 | ||
3496 | /* If trying to grow this window to or beyond size of the parent, | |
3497 | make delta1 so big that, on shrinking back down, | |
3498 | all the siblings end up with less than one line and are deleted. */ | |
3578db3c | 3499 | if (opht <= XINT (*sizep) + delta) |
7ab12479 | 3500 | delta1 = opht * opht * 2; |
7ab12479 | 3501 | else |
233a4a2c GM |
3502 | { |
3503 | /* Otherwise, make delta1 just right so that if we add | |
3504 | delta1 lines to this window and to the parent, and then | |
3505 | shrink the parent back to its original size, the new | |
3506 | proportional size of this window will increase by delta. | |
3507 | ||
3508 | The function size_window will compute the new height h' | |
3509 | of the window from delta1 as: | |
3510 | ||
3511 | e = delta1/n | |
3512 | x = delta1 - delta1/n * n for the 1st resizable child | |
3513 | h' = h + e + x | |
3514 | ||
3515 | where n is the number of children that can be resized. | |
3516 | We can ignore x by choosing a delta1 that is a multiple of | |
3517 | n. We want the height of this window to come out as | |
3518 | ||
3519 | h' = h + delta | |
3520 | ||
3521 | So, delta1 must be | |
3522 | ||
3523 | h + e = h + delta | |
3524 | delta1/n = delta | |
3525 | delta1 = n * delta. | |
3526 | ||
3527 | The number of children n rquals the number of resizable | |
3528 | children of this window + 1 because we know window itself | |
3529 | is resizable (otherwise we would have signalled an error. */ | |
3530 | ||
3531 | struct window *w = XWINDOW (window); | |
3532 | Lisp_Object s; | |
3533 | int n = 1; | |
3534 | ||
3535 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3536 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3537 | ++n; | |
3538 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3539 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3540 | ++n; | |
3541 | ||
3542 | delta1 = n * delta; | |
3543 | } | |
7ab12479 JB |
3544 | |
3545 | /* Add delta1 lines or columns to this window, and to the parent, | |
3546 | keeping things consistent while not affecting siblings. */ | |
3578db3c KR |
3547 | XSETINT (CURSIZE (parent), opht + delta1); |
3548 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
7ab12479 JB |
3549 | |
3550 | /* Squeeze out delta1 lines or columns from our parent, | |
3551 | shriking this window and siblings proportionately. | |
3552 | This brings parent back to correct size. | |
3553 | Delta1 was calculated so this makes this window the desired size, | |
3554 | taking it all out of the siblings. */ | |
3555 | (*setsizefun) (parent, opht, 0); | |
3556 | } | |
3557 | ||
d834a2e9 | 3558 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3559 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3560 | |
3561 | /* Adjust glyph matrices. */ | |
3562 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3563 | } |
c1636aa6 | 3564 | |
7ab12479 JB |
3565 | #undef CURBEG |
3566 | #undef CURSIZE | |
3567 | ||
5500c422 | 3568 | |
f984d4fc GM |
3569 | \f |
3570 | /*********************************************************************** | |
3571 | Resizing Mini-Windows | |
3572 | ***********************************************************************/ | |
3573 | ||
3574 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3575 | |
43b4a21f GM |
3576 | enum save_restore_action |
3577 | { | |
3578 | CHECK_ORIG_SIZES, | |
3579 | SAVE_ORIG_SIZES, | |
3580 | RESTORE_ORIG_SIZES | |
3581 | }; | |
3582 | ||
3583 | static int save_restore_orig_size P_ ((struct window *, | |
3584 | enum save_restore_action)); | |
f984d4fc GM |
3585 | |
3586 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3587 | from lowest windows first. */ | |
3588 | ||
3589 | static void | |
3590 | shrink_window_lowest_first (w, height) | |
3591 | struct window *w; | |
3592 | int height; | |
3593 | { | |
3594 | struct window *c; | |
3595 | Lisp_Object child; | |
3596 | int old_height; | |
3597 | ||
3598 | xassert (!MINI_WINDOW_P (w)); | |
3599 | ||
3600 | /* Set redisplay hints. */ | |
3601 | XSETFASTINT (w->last_modified, 0); | |
3602 | XSETFASTINT (w->last_overlay_modified, 0); | |
3603 | windows_or_buffers_changed++; | |
3604 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3605 | ||
3606 | old_height = XFASTINT (w->height); | |
3607 | XSETFASTINT (w->height, height); | |
3608 | ||
3609 | if (!NILP (w->hchild)) | |
3610 | { | |
3611 | for (child = w->hchild; !NILP (child); child = c->next) | |
3612 | { | |
3613 | c = XWINDOW (child); | |
3614 | c->top = w->top; | |
3615 | shrink_window_lowest_first (c, height); | |
3616 | } | |
3617 | } | |
3618 | else if (!NILP (w->vchild)) | |
3619 | { | |
3620 | Lisp_Object last_child; | |
3621 | int delta = old_height - height; | |
3622 | int last_top; | |
6bbd7a29 GM |
3623 | |
3624 | last_child = Qnil; | |
f984d4fc GM |
3625 | |
3626 | /* Find the last child. We are taking space from lowest windows | |
3627 | first, so we iterate over children from the last child | |
3628 | backwards. */ | |
3629 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3630 | last_child = child; | |
3631 | ||
3632 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3633 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3634 | { | |
3635 | int this_one; | |
3636 | ||
3637 | c = XWINDOW (child); | |
3638 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3639 | ||
3640 | if (this_one > delta) | |
3641 | this_one = delta; | |
3642 | ||
3643 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3644 | delta -= this_one; | |
3645 | } | |
3646 | ||
3647 | /* Compute new positions. */ | |
3578db3c | 3648 | last_top = XINT (w->top); |
f984d4fc GM |
3649 | for (child = w->vchild; !NILP (child); child = c->next) |
3650 | { | |
3651 | c = XWINDOW (child); | |
3652 | c->top = make_number (last_top); | |
3653 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3654 | last_top += XFASTINT (c->height); | |
3655 | } | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | ||
43b4a21f GM |
3660 | /* Save, restore, or check positions and sizes in the window tree |
3661 | rooted at W. ACTION says what to do. | |
f984d4fc | 3662 | |
43b4a21f GM |
3663 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3664 | members are valid for all windows in the window tree. Value is | |
3665 | non-zero if they are valid. | |
3666 | ||
3667 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3668 | orig_top and orig_height for all windows in the tree. | |
3669 | ||
3670 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3671 | values stored in orig_top and orig_height for all windows. */ | |
3672 | ||
3673 | static int | |
3674 | save_restore_orig_size (w, action) | |
f984d4fc | 3675 | struct window *w; |
43b4a21f | 3676 | enum save_restore_action action; |
f984d4fc | 3677 | { |
43b4a21f GM |
3678 | int success_p = 1; |
3679 | ||
f984d4fc GM |
3680 | while (w) |
3681 | { | |
3682 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3683 | { |
3684 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3685 | success_p = 0; | |
3686 | } | |
f984d4fc | 3687 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3688 | { |
3689 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3690 | success_p = 0; | |
3691 | } | |
f984d4fc | 3692 | |
43b4a21f | 3693 | switch (action) |
f984d4fc | 3694 | { |
43b4a21f GM |
3695 | case CHECK_ORIG_SIZES: |
3696 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3697 | return 0; | |
3698 | break; | |
3699 | ||
3700 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3701 | w->orig_top = w->top; |
3702 | w->orig_height = w->height; | |
43b4a21f GM |
3703 | XSETFASTINT (w->last_modified, 0); |
3704 | XSETFASTINT (w->last_overlay_modified, 0); | |
3705 | break; | |
3706 | ||
3707 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3708 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3709 | w->top = w->orig_top; | |
3710 | w->height = w->orig_height; | |
3711 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3712 | XSETFASTINT (w->last_modified, 0); |
3713 | XSETFASTINT (w->last_overlay_modified, 0); | |
3714 | break; | |
3715 | ||
3716 | default: | |
3717 | abort (); | |
f984d4fc | 3718 | } |
43b4a21f | 3719 | |
f984d4fc GM |
3720 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3721 | } | |
43b4a21f GM |
3722 | |
3723 | return success_p; | |
f984d4fc GM |
3724 | } |
3725 | ||
3726 | ||
3727 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3728 | without deleting other windows. */ | |
3729 | ||
3730 | void | |
3731 | grow_mini_window (w, delta) | |
3732 | struct window *w; | |
3733 | int delta; | |
3734 | { | |
3735 | struct frame *f = XFRAME (w->frame); | |
3736 | struct window *root; | |
3737 | ||
3738 | xassert (MINI_WINDOW_P (w)); | |
3739 | xassert (delta >= 0); | |
3740 | ||
3741 | /* Check values of window_min_width and window_min_height for | |
3742 | validity. */ | |
3743 | check_min_window_sizes (); | |
3744 | ||
3745 | /* Compute how much we can enlarge the mini-window without deleting | |
3746 | other windows. */ | |
3747 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3748 | if (delta) | |
3749 | { | |
3750 | int min_height = window_min_size (root, 0, 0, 0); | |
3751 | if (XFASTINT (root->height) - delta < min_height) | |
8b8bd9c6 | 3752 | /* Note that the root window may already be smaller than |
eafa3196 GM |
3753 | min_height. */ |
3754 | delta = max (0, XFASTINT (root->height) - min_height); | |
f984d4fc GM |
3755 | } |
3756 | ||
3757 | if (delta) | |
3758 | { | |
3759 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3760 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3761 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3762 | |
3763 | /* Shrink other windows. */ | |
3764 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3765 | ||
3766 | /* Grow the mini-window. */ | |
3578db3c | 3767 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3768 | w->height = make_number (XFASTINT (w->height) + delta); |
3769 | XSETFASTINT (w->last_modified, 0); | |
3770 | XSETFASTINT (w->last_overlay_modified, 0); | |
3771 | ||
3772 | adjust_glyphs (f); | |
3773 | } | |
3774 | } | |
3775 | ||
3776 | ||
86c8e823 GM |
3777 | /* Shrink mini-window W. If there is recorded info about window sizes |
3778 | before a call to grow_mini_window, restore recorded window sizes. | |
3779 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3780 | line. */ | |
f984d4fc GM |
3781 | |
3782 | void | |
3783 | shrink_mini_window (w) | |
3784 | struct window *w; | |
3785 | { | |
3786 | struct frame *f = XFRAME (w->frame); | |
3787 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3788 | ||
43b4a21f | 3789 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3790 | { |
43b4a21f | 3791 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3792 | adjust_glyphs (f); |
3793 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3794 | windows_or_buffers_changed = 1; | |
3795 | } | |
86c8e823 GM |
3796 | else if (XFASTINT (w->height) > 1) |
3797 | { | |
0130fe1a GM |
3798 | /* Distribute the additional lines of the mini-window |
3799 | among the other windows. */ | |
86c8e823 GM |
3800 | Lisp_Object window; |
3801 | XSETWINDOW (window, w); | |
3802 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3803 | } | |
f984d4fc GM |
3804 | } |
3805 | ||
3806 | ||
3807 | \f | |
5500c422 GM |
3808 | /* Mark window cursors off for all windows in the window tree rooted |
3809 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3810 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3811 | the frame are cleared. */ | |
3812 | ||
3813 | void | |
3814 | mark_window_cursors_off (w) | |
3815 | struct window *w; | |
3816 | { | |
3817 | while (w) | |
3818 | { | |
3819 | if (!NILP (w->hchild)) | |
3820 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3821 | else if (!NILP (w->vchild)) | |
3822 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3823 | else | |
3824 | w->phys_cursor_on_p = 0; | |
3825 | ||
3826 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3827 | } | |
3828 | } | |
3829 | ||
3830 | ||
e9c195b1 | 3831 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
3832 | |
3833 | int | |
3834 | window_internal_height (w) | |
3835 | struct window *w; | |
3836 | { | |
3837 | int ht = XFASTINT (w->height); | |
3838 | ||
e9c195b1 GM |
3839 | if (!MINI_WINDOW_P (w)) |
3840 | { | |
3841 | if (!NILP (w->parent) | |
3842 | || !NILP (w->vchild) | |
3843 | || !NILP (w->hchild) | |
3844 | || !NILP (w->next) | |
3845 | || !NILP (w->prev) | |
3846 | || WINDOW_WANTS_MODELINE_P (w)) | |
3847 | --ht; | |
7ab12479 | 3848 | |
e9c195b1 GM |
3849 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
3850 | --ht; | |
3851 | } | |
7ab12479 JB |
3852 | |
3853 | return ht; | |
3854 | } | |
3855 | ||
535e0b8e JB |
3856 | |
3857 | /* Return the number of columns in W. | |
a3c87d4e | 3858 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3859 | separating W from the sibling to its right. */ |
5500c422 | 3860 | |
535e0b8e JB |
3861 | int |
3862 | window_internal_width (w) | |
3863 | struct window *w; | |
3864 | { | |
5500c422 | 3865 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3866 | int width = XINT (w->width); |
3867 | ||
a3c87d4e | 3868 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3869 | /* Scroll bars occupy a few columns. */ |
3870 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3871 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3872 | /* The column of `|' characters separating side-by-side windows | |
3873 | occupies one column only. */ | |
3874 | width -= 1; | |
3875 | ||
3876 | /* On window-systems, areas to the left and right of the window | |
81d189fd | 3877 | are used as fringes. */ |
5500c422 | 3878 | if (FRAME_WINDOW_P (f)) |
81d189fd | 3879 | width -= FRAME_FRINGE_COLS (f); |
111e5992 RS |
3880 | |
3881 | return width; | |
535e0b8e JB |
3882 | } |
3883 | ||
5500c422 GM |
3884 | \f |
3885 | /************************************************************************ | |
3886 | Window Scrolling | |
3887 | ***********************************************************************/ | |
535e0b8e | 3888 | |
5500c422 | 3889 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 3890 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
3891 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
3892 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3893 | means don't signal an error if we try to move over BEGV or ZV, | |
3894 | respectively. */ | |
7ab12479 | 3895 | |
101d1605 RS |
3896 | static void |
3897 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3898 | Lisp_Object window; |
3899 | int n; | |
101d1605 | 3900 | int whole; |
f8026fd8 | 3901 | int noerror; |
5500c422 GM |
3902 | { |
3903 | /* If we must, use the pixel-based version which is much slower than | |
3904 | the line-based one but can handle varying line heights. */ | |
3905 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3906 | window_scroll_pixel_based (window, n, whole, noerror); | |
3907 | else | |
3908 | window_scroll_line_based (window, n, whole, noerror); | |
3909 | } | |
3910 | ||
3911 | ||
3912 | /* Implementation of window_scroll that works based on pixel line | |
3913 | heights. See the comment of window_scroll for parameter | |
3914 | descriptions. */ | |
3915 | ||
3916 | static void | |
3917 | window_scroll_pixel_based (window, n, whole, noerror) | |
3918 | Lisp_Object window; | |
3919 | int n; | |
3920 | int whole; | |
3921 | int noerror; | |
3922 | { | |
3923 | struct it it; | |
3924 | struct window *w = XWINDOW (window); | |
3925 | struct text_pos start; | |
3926 | Lisp_Object tem; | |
3927 | int this_scroll_margin; | |
3928 | int preserve_y; | |
5cdb3cf3 MB |
3929 | /* True if we fiddled the window vscroll field without really scrolling. */ |
3930 | int vscrolled = 0; | |
5500c422 GM |
3931 | |
3932 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3933 | ||
3934 | /* If PT is not visible in WINDOW, move back one half of | |
288d4e06 GM |
3935 | the screen. Allow PT to be partially visible, otherwise |
3936 | something like (scroll-down 1) with PT in the line before | |
3937 | the partially visible one would recenter. */ | |
3938 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
3939 | if (NILP (tem)) |
3940 | { | |
3941 | /* Move backward half the height of the window. Performance note: | |
3942 | vmotion used here is about 10% faster, but would give wrong | |
3943 | results for variable height lines. */ | |
3944 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3945 | it.current_y = it.last_visible_y; | |
202379cf | 3946 | move_it_vertically (&it, - window_box_height (w) / 2); |
5500c422 GM |
3947 | |
3948 | /* The function move_iterator_vertically may move over more than | |
3949 | the specified y-distance. If it->w is small, e.g. a | |
3950 | mini-buffer window, we may end up in front of the window's | |
3951 | display area. This is the case when Start displaying at the | |
3952 | start of the line containing PT in this case. */ | |
3953 | if (it.current_y <= 0) | |
3954 | { | |
3955 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3956 | move_it_vertically (&it, 0); | |
3957 | it.current_y = 0; | |
3958 | } | |
3959 | ||
3960 | start = it.current.pos; | |
3961 | } | |
3962 | ||
3963 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3964 | point in the same window line as it is now, so get that line. */ | |
3965 | if (!NILP (Vscroll_preserve_screen_position)) | |
3966 | { | |
3967 | start_display (&it, w, start); | |
3968 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3969 | preserve_y = it.current_y; | |
3970 | } | |
3971 | else | |
3972 | preserve_y = -1; | |
3973 | ||
3974 | /* Move iterator it from start the specified distance forward or | |
3975 | backward. The result is the new window start. */ | |
3976 | start_display (&it, w, start); | |
3977 | if (whole) | |
3978 | { | |
202379cf | 3979 | int screen_full = (window_box_height (w) |
5500c422 | 3980 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); |
d4e7cf01 | 3981 | int dy = n * screen_full; |
d72340d4 GM |
3982 | |
3983 | /* Note that move_it_vertically always moves the iterator to the | |
3984 | start of a line. So, if the last line doesn't have a newline, | |
3985 | we would end up at the start of the line ending at ZV. */ | |
3986 | if (dy <= 0) | |
3987 | move_it_vertically_backward (&it, -dy); | |
3988 | else if (dy > 0) | |
3989 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, | |
3990 | MOVE_TO_POS | MOVE_TO_Y); | |
5500c422 GM |
3991 | } |
3992 | else | |
3993 | move_it_by_lines (&it, n, 1); | |
3994 | ||
3995 | /* End if we end up at ZV or BEGV. */ | |
3996 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
3997 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
3998 | { | |
5cdb3cf3 MB |
3999 | if (IT_CHARPOS (it) == ZV) |
4000 | { | |
4001 | if (it.current_y + it.max_ascent + it.max_descent | |
4002 | > it.last_visible_y) | |
a74eca50 GM |
4003 | { |
4004 | /* The last line was only partially visible, make it fully | |
4005 | visible. */ | |
4006 | w->vscroll = (it.last_visible_y | |
4007 | - it.current_y + it.max_ascent + it.max_descent); | |
4008 | adjust_glyphs (it.f); | |
4009 | } | |
5cdb3cf3 MB |
4010 | else if (noerror) |
4011 | return; | |
4012 | else | |
4013 | Fsignal (Qend_of_buffer, Qnil); | |
4014 | } | |
5500c422 | 4015 | else |
5cdb3cf3 MB |
4016 | { |
4017 | if (w->vscroll != 0) | |
4018 | /* The first line was only partially visible, make it fully | |
4019 | visible. */ | |
4020 | w->vscroll = 0; | |
4021 | else if (noerror) | |
4022 | return; | |
4023 | else | |
4024 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4025 | } | |
4026 | ||
4027 | /* If control gets here, then we vscrolled. */ | |
4028 | ||
4029 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4030 | ||
4031 | /* Don't try to change the window start below. */ | |
4032 | vscrolled = 1; | |
5500c422 GM |
4033 | } |
4034 | ||
5cdb3cf3 MB |
4035 | if (! vscrolled) |
4036 | { | |
4037 | /* Set the window start, and set up the window for redisplay. */ | |
4038 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), | |
4039 | w->buffer); | |
4040 | w->start_at_line_beg = Fbolp (); | |
4041 | w->update_mode_line = Qt; | |
4042 | XSETFASTINT (w->last_modified, 0); | |
4043 | XSETFASTINT (w->last_overlay_modified, 0); | |
4044 | /* Set force_start so that redisplay_window will run the | |
4045 | window-scroll-functions. */ | |
4046 | w->force_start = Qt; | |
4047 | } | |
5500c422 GM |
4048 | |
4049 | it.current_y = it.vpos = 0; | |
4050 | ||
4051 | /* Preserve the screen position if we must. */ | |
4052 | if (preserve_y >= 0) | |
4053 | { | |
4054 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
4055 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4056 | } | |
4057 | else | |
4058 | { | |
4059 | /* Move PT out of scroll margins. */ | |
4060 | this_scroll_margin = max (0, scroll_margin); | |
4061 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
4062 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
4063 | ||
4064 | if (n > 0) | |
4065 | { | |
4066 | /* We moved the window start towards ZV, so PT may be now | |
4067 | in the scroll margin at the top. */ | |
4068 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4069 | while (it.current_y < this_scroll_margin) | |
4070 | move_it_by_lines (&it, 1, 1); | |
4071 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4072 | } | |
4073 | else if (n < 0) | |
4074 | { | |
5cdb3cf3 MB |
4075 | int charpos, bytepos; |
4076 | ||
5500c422 GM |
4077 | /* We moved the window start towards BEGV, so PT may be now |
4078 | in the scroll margin at the bottom. */ | |
4079 | move_it_to (&it, PT, -1, | |
4080 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4081 | MOVE_TO_POS | MOVE_TO_Y); | |
5cdb3cf3 MB |
4082 | |
4083 | /* Save our position, in case it's correct. */ | |
4084 | charpos = IT_CHARPOS (it); | |
4085 | bytepos = IT_BYTEPOS (it); | |
5500c422 | 4086 | |
5cdb3cf3 MB |
4087 | /* See if point is on a partially visible line at the end. */ |
4088 | move_it_by_lines (&it, 1, 1); | |
4089 | if (it.current_y > it.last_visible_y) | |
4090 | /* The last line was only partially visible, so back up two | |
4091 | lines to make sure we're on a fully visible line. */ | |
4092 | { | |
4093 | move_it_by_lines (&it, -2, 0); | |
4094 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4095 | } | |
4096 | else | |
4097 | /* No, the position we saved is OK, so use it. */ | |
4098 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4099 | } |
4100 | } | |
4101 | } | |
4102 | ||
4103 | ||
4104 | /* Implementation of window_scroll that works based on screen lines. | |
4105 | See the comment of window_scroll for parameter descriptions. */ | |
4106 | ||
4107 | static void | |
4108 | window_scroll_line_based (window, n, whole, noerror) | |
4109 | Lisp_Object window; | |
4110 | int n; | |
4111 | int whole; | |
4112 | int noerror; | |
7ab12479 JB |
4113 | { |
4114 | register struct window *w = XWINDOW (window); | |
5500c422 | 4115 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4116 | register int pos, pos_byte; |
7ab12479 JB |
4117 | register int ht = window_internal_height (w); |
4118 | register Lisp_Object tem; | |
4119 | int lose; | |
5500c422 | 4120 | Lisp_Object bolp; |
345d45b2 | 4121 | int startpos; |
101d1605 RS |
4122 | struct position posit; |
4123 | int original_vpos; | |
4124 | ||
d4e7cf01 GM |
4125 | /* If scrolling screen-fulls, compute the number of lines to |
4126 | scroll from the window's height. */ | |
4127 | if (whole) | |
4128 | n *= max (1, ht - next_screen_context_lines); | |
4129 | ||
101d1605 RS |
4130 | startpos = marker_position (w->start); |
4131 | ||
4132 | posit = *compute_motion (startpos, 0, 0, 0, | |
4133 | PT, ht, 0, | |
4134 | window_internal_width (w), XINT (w->hscroll), | |
4135 | 0, w); | |
4136 | original_vpos = posit.vpos; | |
0a1f771a | 4137 | |
d834a2e9 | 4138 | XSETFASTINT (tem, PT); |
6ffdb539 | 4139 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4140 | |
265a9e55 | 4141 | if (NILP (tem)) |
7ab12479 | 4142 | { |
cd2be1dd | 4143 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4144 | startpos = PT; |
7ab12479 JB |
4145 | } |
4146 | ||
345d45b2 | 4147 | SET_PT (startpos); |
5ce7b543 | 4148 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4149 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4150 | pos = PT; |
b73ea88e | 4151 | pos_byte = PT_BYTE; |
7ab12479 | 4152 | bolp = Fbolp (); |
b73ea88e | 4153 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4154 | |
4155 | if (lose) | |
f8026fd8 JB |
4156 | { |
4157 | if (noerror) | |
4158 | return; | |
4159 | else | |
4160 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4161 | } | |
7ab12479 JB |
4162 | |
4163 | if (pos < ZV) | |
7ab12479 | 4164 | { |
0c7da84e RS |
4165 | int this_scroll_margin = scroll_margin; |
4166 | ||
4167 | /* Don't use a scroll margin that is negative or too large. */ | |
4168 | if (this_scroll_margin < 0) | |
4169 | this_scroll_margin = 0; | |
4170 | ||
4171 | if (XINT (w->height) < 4 * scroll_margin) | |
4172 | this_scroll_margin = XINT (w->height) / 4; | |
4173 | ||
b73ea88e | 4174 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4175 | w->start_at_line_beg = bolp; |
4176 | w->update_mode_line = Qt; | |
d834a2e9 | 4177 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4178 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4179 | /* Set force_start so that redisplay_window will run |
4180 | the window-scroll-functions. */ | |
4181 | w->force_start = Qt; | |
0c7da84e | 4182 | |
5500c422 | 4183 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4184 | { |
b73ea88e | 4185 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4186 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4187 | } |
101d1605 RS |
4188 | /* If we scrolled forward, put point enough lines down |
4189 | that it is outside the scroll margin. */ | |
4190 | else if (n > 0) | |
0c7da84e | 4191 | { |
101d1605 RS |
4192 | int top_margin; |
4193 | ||
4194 | if (this_scroll_margin > 0) | |
4195 | { | |
b73ea88e | 4196 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4197 | Fvertical_motion (make_number (this_scroll_margin), window); |
4198 | top_margin = PT; | |
4199 | } | |
4200 | else | |
4201 | top_margin = pos; | |
4202 | ||
4203 | if (top_margin <= opoint) | |
b73ea88e | 4204 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4205 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4206 | { |
b73ea88e | 4207 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4208 | Fvertical_motion (make_number (original_vpos), window); |
4209 | } | |
9317a85d | 4210 | else |
335406fc | 4211 | SET_PT (top_margin); |
0c7da84e | 4212 | } |
101d1605 | 4213 | else if (n < 0) |
7ab12479 | 4214 | { |
101d1605 RS |
4215 | int bottom_margin; |
4216 | ||
0c7da84e RS |
4217 | /* If we scrolled backward, put point near the end of the window |
4218 | but not within the scroll margin. */ | |
b73ea88e | 4219 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4220 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4221 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4222 | bottom_margin = PT; | |
4223 | else | |
4224 | bottom_margin = PT + 1; | |
4225 | ||
4226 | if (bottom_margin > opoint) | |
b73ea88e | 4227 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4228 | else |
101d1605 | 4229 | { |
5500c422 | 4230 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4231 | { |
b73ea88e | 4232 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4233 | Fvertical_motion (make_number (original_vpos), window); |
4234 | } | |
4235 | else | |
4236 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4237 | } |
7ab12479 JB |
4238 | } |
4239 | } | |
4240 | else | |
f8026fd8 JB |
4241 | { |
4242 | if (noerror) | |
4243 | return; | |
4244 | else | |
4245 | Fsignal (Qend_of_buffer, Qnil); | |
4246 | } | |
7ab12479 | 4247 | } |
5500c422 GM |
4248 | |
4249 | ||
4250 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4251 | screen-full which is defined as the height of the window minus | |
4252 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4253 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4254 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4255 | |
4256 | static void | |
4257 | scroll_command (n, direction) | |
5500c422 | 4258 | Lisp_Object n; |
7ab12479 JB |
4259 | int direction; |
4260 | { | |
d4e7cf01 | 4261 | int count = BINDING_STACK_SIZE (); |
7ab12479 | 4262 | |
5500c422 GM |
4263 | xassert (abs (direction) == 1); |
4264 | ||
4265 | /* If selected window's buffer isn't current, make it current for | |
4266 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4267 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4268 | { |
4269 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4270 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4271 | |
4272 | /* Make redisplay consider other windows than just selected_window. */ | |
4273 | ++windows_or_buffers_changed; | |
95605e15 | 4274 | } |
7ab12479 | 4275 | |
265a9e55 | 4276 | if (NILP (n)) |
d4e7cf01 | 4277 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4278 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4279 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4280 | else |
4281 | { | |
4282 | n = Fprefix_numeric_value (n); | |
101d1605 | 4283 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4284 | } |
95605e15 JB |
4285 | |
4286 | unbind_to (count, Qnil); | |
7ab12479 JB |
4287 | } |
4288 | ||
4289 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
fdb82f93 PJ |
4290 | doc: /* Scroll text of current window upward ARG lines; or near full screen if no ARG. |
4291 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4292 | Negative ARG means scroll downward. | |
4293 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4294 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4295 | (arg) | |
413430c5 | 4296 | Lisp_Object arg; |
7ab12479 | 4297 | { |
413430c5 | 4298 | scroll_command (arg, 1); |
7ab12479 JB |
4299 | return Qnil; |
4300 | } | |
4301 | ||
4302 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
fdb82f93 PJ |
4303 | doc: /* Scroll text of current window down ARG lines; or near full screen if no ARG. |
4304 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4305 | Negative ARG means scroll upward. | |
4306 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4307 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4308 | (arg) | |
413430c5 | 4309 | Lisp_Object arg; |
7ab12479 | 4310 | { |
413430c5 | 4311 | scroll_command (arg, -1); |
7ab12479 JB |
4312 | return Qnil; |
4313 | } | |
ccd0664b RS |
4314 | \f |
4315 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 PJ |
4316 | doc: /* Return the other window for \"other window scroll\" commands. |
4317 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4318 | specifies the window. | |
4319 | If `other-window-scroll-buffer' is non-nil, a window | |
4320 | showing that buffer is used. */) | |
4321 | () | |
7ab12479 | 4322 | { |
ccd0664b | 4323 | Lisp_Object window; |
7ab12479 JB |
4324 | |
4325 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4326 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4327 | window = Vminibuf_scroll_window; |
4328 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4329 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4330 | { |
4331 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4332 | if (NILP (window)) |
53f76081 | 4333 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4334 | } |
4335 | else | |
dbc4e1c1 JB |
4336 | { |
4337 | /* Nothing specified; look for a neighboring window on the same | |
4338 | frame. */ | |
4339 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4340 | ||
4341 | if (EQ (window, selected_window)) | |
4342 | /* That didn't get us anywhere; look for a window on another | |
4343 | visible frame. */ | |
4344 | do | |
4345 | window = Fnext_window (window, Qnil, Qt); | |
4346 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4347 | && ! EQ (window, selected_window)); | |
4348 | } | |
4349 | ||
b7826503 | 4350 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4351 | |
4352 | if (EQ (window, selected_window)) | |
4353 | error ("There is no other window"); | |
4354 | ||
ccd0664b RS |
4355 | return window; |
4356 | } | |
4357 | ||
4358 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4359 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4360 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4361 | The next window is the one below the current one; or the one at the top | |
4362 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4363 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4364 | When calling from a program, supply as argument a number, nil, or `-'. | |
4365 | ||
4366 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4367 | specifies the window to scroll. | |
4368 | If `other-window-scroll-buffer' is non-nil, scroll the window | |
4369 | showing that buffer, popping the buffer up if necessary. */) | |
4370 | (arg) | |
d4e7cf01 | 4371 | Lisp_Object arg; |
ccd0664b | 4372 | { |
d4e7cf01 GM |
4373 | Lisp_Object window; |
4374 | struct window *w; | |
4375 | int count = BINDING_STACK_SIZE (); | |
ccd0664b RS |
4376 | |
4377 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4378 | w = XWINDOW (window); |
7ab12479 JB |
4379 | |
4380 | /* Don't screw up if window_scroll gets an error. */ | |
4381 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4382 | ++windows_or_buffers_changed; |
7ab12479 JB |
4383 | |
4384 | Fset_buffer (w->buffer); | |
4385 | SET_PT (marker_position (w->pointm)); | |
4386 | ||
413430c5 | 4387 | if (NILP (arg)) |
d4e7cf01 | 4388 | window_scroll (window, 1, 1, 1); |
413430c5 | 4389 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4390 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4391 | else |
4392 | { | |
413430c5 EN |
4393 | if (CONSP (arg)) |
4394 | arg = Fcar (arg); | |
b7826503 | 4395 | CHECK_NUMBER (arg); |
101d1605 | 4396 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4397 | } |
4398 | ||
b73ea88e | 4399 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4400 | unbind_to (count, Qnil); |
7ab12479 JB |
4401 | |
4402 | return Qnil; | |
4403 | } | |
4404 | \f | |
644b477c | 4405 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
fdb82f93 | 4406 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4407 | Default for ARG is window width minus 2. |
4408 | Value is the total amount of leftward horizontal scrolling in | |
4409 | effect after the change. | |
4410 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4411 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4412 | will not scroll a window to a column less than the value returned | |
4413 | by this function. */) | |
fdb82f93 | 4414 | (arg) |
7ab12479 JB |
4415 | register Lisp_Object arg; |
4416 | { | |
c67fa410 GM |
4417 | Lisp_Object result; |
4418 | int hscroll; | |
4419 | struct window *w = XWINDOW (selected_window); | |
4420 | ||
265a9e55 | 4421 | if (NILP (arg)) |
c67fa410 | 4422 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4423 | else |
4424 | arg = Fprefix_numeric_value (arg); | |
4425 | ||
c67fa410 GM |
4426 | hscroll = XINT (w->hscroll) + XINT (arg); |
4427 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4428 | ||
f5686fbd | 4429 | if (interactive_p (0)) |
c67fa410 GM |
4430 | w->min_hscroll = w->hscroll; |
4431 | ||
4432 | return result; | |
7ab12479 JB |
4433 | } |
4434 | ||
644b477c | 4435 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
fdb82f93 | 4436 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4437 | Default for ARG is window width minus 2. |
4438 | Value is the total amount of leftward horizontal scrolling in | |
4439 | effect after the change. | |
4440 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4441 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4442 | will not scroll a window to a column less than the value returned | |
4443 | by this function. */) | |
fdb82f93 | 4444 | (arg) |
7ab12479 JB |
4445 | register Lisp_Object arg; |
4446 | { | |
c67fa410 GM |
4447 | Lisp_Object result; |
4448 | int hscroll; | |
4449 | struct window *w = XWINDOW (selected_window); | |
4450 | ||
265a9e55 | 4451 | if (NILP (arg)) |
c67fa410 | 4452 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4453 | else |
4454 | arg = Fprefix_numeric_value (arg); | |
4455 | ||
c67fa410 GM |
4456 | hscroll = XINT (w->hscroll) - XINT (arg); |
4457 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4458 | ||
f5686fbd | 4459 | if (interactive_p (0)) |
c67fa410 GM |
4460 | w->min_hscroll = w->hscroll; |
4461 | ||
4462 | return result; | |
7ab12479 JB |
4463 | } |
4464 | ||
12c8b416 GM |
4465 | /* Value is the number of lines actually displayed in window W, |
4466 | as opposed to its height. */ | |
4467 | ||
4468 | static int | |
4469 | displayed_window_lines (w) | |
4470 | struct window *w; | |
4471 | { | |
4472 | struct it it; | |
4473 | struct text_pos start; | |
4474 | int height = window_box_height (w); | |
4475 | struct buffer *old_buffer; | |
4476 | int bottom_y; | |
4477 | ||
4478 | if (XBUFFER (w->buffer) != current_buffer) | |
4479 | { | |
4480 | old_buffer = current_buffer; | |
4481 | set_buffer_internal (XBUFFER (w->buffer)); | |
4482 | } | |
4483 | else | |
4484 | old_buffer = NULL; | |
4485 | ||
521b203e GM |
4486 | /* In case W->start is out of the accessible range, do something |
4487 | reasonable. This happens in Info mode when Info-scroll-down | |
4488 | calls (recenter -1) while W->start is 1. */ | |
4489 | if (XMARKER (w->start)->charpos < BEGV) | |
4490 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4491 | else if (XMARKER (w->start)->charpos > ZV) | |
4492 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4493 | else | |
4494 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4495 | ||
12c8b416 GM |
4496 | start_display (&it, w, start); |
4497 | move_it_vertically (&it, height); | |
c8bc6f65 | 4498 | bottom_y = line_bottom_y (&it); |
12c8b416 GM |
4499 | |
4500 | /* Add in empty lines at the bottom of the window. */ | |
4501 | if (bottom_y < height) | |
4502 | { | |
c8bc6f65 GM |
4503 | int uy = CANON_Y_UNIT (it.f); |
4504 | it.vpos += (height - bottom_y + uy - 1) / uy; | |
12c8b416 GM |
4505 | } |
4506 | ||
c8bc6f65 GM |
4507 | if (old_buffer) |
4508 | set_buffer_internal (old_buffer); | |
4509 | ||
12c8b416 GM |
4510 | return it.vpos; |
4511 | } | |
4512 | ||
4513 | ||
7ab12479 | 4514 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
4515 | doc: /* Center point in window and redisplay frame. |
4516 | With prefix argument ARG, recenter putting point on screen line ARG | |
4517 | relative to the current window. If ARG is negative, it counts up from the | |
4518 | bottom of the window. (ARG should be less than the height of the window.) | |
4519 | ||
4520 | If ARG is omitted or nil, erase the entire frame and then | |
4521 | redraw with point in the center of the current window. | |
4522 | Just C-u as prefix means put point in the center of the window | |
4523 | and redisplay normally--don't erase and redraw the frame. */) | |
4524 | (arg) | |
413430c5 | 4525 | register Lisp_Object arg; |
7ab12479 | 4526 | { |
6df47b59 | 4527 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
4528 | struct buffer *buf = XBUFFER (w->buffer); |
4529 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
4530 | int center_p = 0; |
4531 | int charpos, bytepos; | |
7ab12479 | 4532 | |
413430c5 | 4533 | if (NILP (arg)) |
7ab12479 | 4534 | { |
f02d6d5c KH |
4535 | int i; |
4536 | ||
4537 | /* Invalidate pixel data calculated for all compositions. */ | |
4538 | for (i = 0; i < n_compositions; i++) | |
4539 | composition_table[i]->font = NULL; | |
7ab12479 | 4540 | |
527b6458 | 4541 | Fredraw_frame (w->frame); |
44fa5b1e | 4542 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 4543 | center_p = 1; |
7ab12479 | 4544 | } |
413430c5 | 4545 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 4546 | center_p = 1; |
7ab12479 JB |
4547 | else |
4548 | { | |
413430c5 | 4549 | arg = Fprefix_numeric_value (arg); |
b7826503 | 4550 | CHECK_NUMBER (arg); |
7ab12479 JB |
4551 | } |
4552 | ||
478292ed | 4553 | set_buffer_internal (buf); |
7ab12479 | 4554 | |
521b203e | 4555 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
4556 | have variable-height lines and centering point on the basis of |
4557 | line counts would lead to strange effects. */ | |
521b203e | 4558 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 4559 | { |
6df47b59 GM |
4560 | if (center_p) |
4561 | { | |
521b203e GM |
4562 | struct it it; |
4563 | struct text_pos pt; | |
4564 | ||
4565 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4566 | start_display (&it, w, pt); | |
202379cf | 4567 | move_it_vertically (&it, - window_box_height (w) / 2); |
521b203e GM |
4568 | charpos = IT_CHARPOS (it); |
4569 | bytepos = IT_BYTEPOS (it); | |
6df47b59 GM |
4570 | } |
4571 | else if (XINT (arg) < 0) | |
4572 | { | |
521b203e GM |
4573 | struct it it; |
4574 | struct text_pos pt; | |
d466fa4d | 4575 | int y0, y1, h, nlines; |
521b203e GM |
4576 | |
4577 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4578 | start_display (&it, w, pt); | |
4579 | y0 = it.current_y; | |
4580 | ||
d466fa4d | 4581 | /* The amount of pixels we have to move back is the window |
521b203e GM |
4582 | height minus what's displayed in the line containing PT, |
4583 | and the lines below. */ | |
d466fa4d GM |
4584 | nlines = - XINT (arg) - 1; |
4585 | move_it_by_lines (&it, nlines, 1); | |
4586 | ||
521b203e GM |
4587 | y1 = it.current_y - y0; |
4588 | h = line_bottom_y (&it) - y1; | |
d466fa4d GM |
4589 | |
4590 | /* If we can't move down NLINES lines because we hit | |
4591 | the end of the buffer, count in some empty lines. */ | |
4592 | if (it.vpos < nlines) | |
4593 | y1 += (nlines - it.vpos) * CANON_Y_UNIT (it.f); | |
4594 | ||
521b203e GM |
4595 | y0 = it.last_visible_y - y1 - h; |
4596 | ||
4597 | start_display (&it, w, pt); | |
4598 | move_it_vertically (&it, - y0); | |
4599 | charpos = IT_CHARPOS (it); | |
4600 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 4601 | } |
521b203e GM |
4602 | else |
4603 | { | |
4604 | struct position pos; | |
4605 | pos = *vmotion (PT, - XINT (arg), w); | |
4606 | charpos = pos.bufpos; | |
4607 | bytepos = pos.bytepos; | |
4608 | } | |
4609 | } | |
4610 | else | |
4611 | { | |
4612 | struct position pos; | |
4613 | int ht = window_internal_height (w); | |
4614 | ||
4615 | if (center_p) | |
4616 | arg = make_number (ht / 2); | |
4617 | else if (XINT (arg) < 0) | |
4618 | arg = make_number (XINT (arg) + ht); | |
6df47b59 GM |
4619 | |
4620 | pos = *vmotion (PT, - XINT (arg), w); | |
4621 | charpos = pos.bufpos; | |
4622 | bytepos = pos.bytepos; | |
4623 | } | |
4624 | ||
4625 | /* Set the new window start. */ | |
4626 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 4627 | w->window_end_valid = Qnil; |
7ab12479 | 4628 | w->force_start = Qt; |
6df47b59 GM |
4629 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
4630 | w->start_at_line_beg = Qt; | |
4631 | else | |
4632 | w->start_at_line_beg = Qnil; | |
4633 | ||
478292ed | 4634 | set_buffer_internal (obuf); |
7ab12479 JB |
4635 | return Qnil; |
4636 | } | |
b7617575 GM |
4637 | |
4638 | ||
81fe0836 | 4639 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
4640 | 0, 1, 0, |
4641 | doc: /* Return the height in lines of the text display area of WINDOW. | |
4642 | This doesn't include the mode-line (or header-line if any) or any | |
4643 | partial-height lines in the text display area. */) | |
4644 | (window) | |
81fe0836 MB |
4645 | Lisp_Object window; |
4646 | { | |
4647 | struct window *w = decode_window (window); | |
4648 | int pixel_height = window_box_height (w); | |
4649 | int line_height = pixel_height / CANON_Y_UNIT (XFRAME (w->frame)); | |
4650 | return make_number (line_height); | |
4651 | } | |
4652 | ||
4653 | ||
7ab12479 JB |
4654 | \f |
4655 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
4656 | 1, 1, "P", |
4657 | doc: /* Position point relative to window. | |
4658 | With no argument, position point at center of window. | |
4659 | An argument specifies vertical position within the window; | |
4660 | zero means top of window, negative means relative to bottom of window. */) | |
4661 | (arg) | |
b7617575 | 4662 | Lisp_Object arg; |
7ab12479 | 4663 | { |
b7617575 GM |
4664 | struct window *w = XWINDOW (selected_window); |
4665 | int lines, start; | |
540b6aa0 | 4666 | Lisp_Object window; |
7ab12479 | 4667 | |
b7617575 | 4668 | window = selected_window; |
7ab12479 JB |
4669 | start = marker_position (w->start); |
4670 | if (start < BEGV || start > ZV) | |
4671 | { | |
b7617575 | 4672 | int height = window_internal_height (w); |
cd2be1dd | 4673 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4674 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4675 | w->start_at_line_beg = Fbolp (); |
4676 | w->force_start = Qt; | |
4677 | } | |
4678 | else | |
b73ea88e | 4679 | Fgoto_char (w->start); |
7ab12479 | 4680 | |
b7617575 GM |
4681 | lines = displayed_window_lines (w); |
4682 | if (NILP (arg)) | |
4683 | XSETFASTINT (arg, lines / 2); | |
4684 | else | |
4685 | { | |
4686 | arg = Fprefix_numeric_value (arg); | |
4687 | if (XINT (arg) < 0) | |
4688 | XSETINT (arg, XINT (arg) + lines); | |
4689 | } | |
4690 | ||
c8bc6f65 | 4691 | /* Skip past a partially visible first line. */ |
163784df | 4692 | if (w->vscroll) |
163784df MB |
4693 | XSETINT (arg, XINT (arg) + 1); |
4694 | ||
540b6aa0 | 4695 | return Fvertical_motion (arg, window); |
7ab12479 | 4696 | } |
5500c422 GM |
4697 | |
4698 | ||
7ab12479 | 4699 | \f |
5500c422 GM |
4700 | /*********************************************************************** |
4701 | Window Configuration | |
4702 | ***********************************************************************/ | |
4703 | ||
7ab12479 JB |
4704 | struct save_window_data |
4705 | { | |
f5ccc0cc | 4706 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4707 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4708 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4709 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4710 | Lisp_Object selected_frame; |
7ab12479 JB |
4711 | Lisp_Object current_window; |
4712 | Lisp_Object current_buffer; | |
4713 | Lisp_Object minibuf_scroll_window; | |
4714 | Lisp_Object root_window; | |
bdc727bf | 4715 | Lisp_Object focus_frame; |
756b6edc RS |
4716 | /* Record the values of window-min-width and window-min-height |
4717 | so that window sizes remain consistent with them. */ | |
4718 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4719 | /* A vector, each of whose elements is a struct saved_window |
4720 | for one window. */ | |
7ab12479 JB |
4721 | Lisp_Object saved_windows; |
4722 | }; | |
ff06df24 | 4723 | |
cbff28e8 | 4724 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 4725 | struct saved_window |
ea68264b GM |
4726 | { |
4727 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
4728 | EMACS_INT size_from_Lisp_Vector_struct; | |
4729 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 4730 | |
ea68264b GM |
4731 | Lisp_Object window; |
4732 | Lisp_Object buffer, start, pointm, mark; | |
4733 | Lisp_Object left, top, width, height, hscroll, min_hscroll; | |
4734 | Lisp_Object parent, prev; | |
4735 | Lisp_Object start_at_line_beg; | |
4736 | Lisp_Object display_table; | |
4737 | Lisp_Object orig_top, orig_height; | |
4738 | }; | |
4739 | ||
4740 | #define SAVED_WINDOW_VECTOR_SIZE 17 /* Arg to Fmake_vector */ | |
7ab12479 JB |
4741 | |
4742 | #define SAVED_WINDOW_N(swv,n) \ | |
4743 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4744 | ||
4745 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
4746 | doc: /* Return t if OBJECT is a window-configuration object. */) |
4747 | (object) | |
413430c5 | 4748 | Lisp_Object object; |
7ab12479 | 4749 | { |
413430c5 | 4750 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4751 | return Qt; |
4752 | return Qnil; | |
4753 | } | |
4754 | ||
3f8ab7bd | 4755 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
4756 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
4757 | (config) | |
3f8ab7bd RS |
4758 | Lisp_Object config; |
4759 | { | |
4760 | register struct save_window_data *data; | |
4761 | struct Lisp_Vector *saved_windows; | |
4762 | ||
4763 | if (! WINDOW_CONFIGURATIONP (config)) | |
4764 | wrong_type_argument (Qwindow_configuration_p, config); | |
4765 | ||
4766 | data = (struct save_window_data *) XVECTOR (config); | |
4767 | saved_windows = XVECTOR (data->saved_windows); | |
4768 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4769 | } | |
4770 | ||
d5b2799e | 4771 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
4772 | Sset_window_configuration, 1, 1, 0, |
4773 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
4774 | CONFIGURATION must be a value previously returned | |
4775 | by `current-window-configuration' (which see). | |
4776 | If CONFIGURATION was made from a frame that is now deleted, | |
4777 | only frame-independent values can be restored. In this case, | |
4778 | the return value is nil. Otherwise the value is t. */) | |
4779 | (configuration) | |
2f83aebe | 4780 | Lisp_Object configuration; |
7ab12479 | 4781 | { |
7ab12479 JB |
4782 | register struct save_window_data *data; |
4783 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4784 | Lisp_Object new_current_buffer; |
fd482be5 | 4785 | Lisp_Object frame; |
44fa5b1e | 4786 | FRAME_PTR f; |
d2b35234 | 4787 | int old_point = -1; |
7ab12479 | 4788 | |
017b2bad | 4789 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4790 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4791 | |
2f83aebe | 4792 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4793 | saved_windows = XVECTOR (data->saved_windows); |
4794 | ||
7ab12479 | 4795 | new_current_buffer = data->current_buffer; |
265a9e55 | 4796 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4797 | new_current_buffer = Qnil; |
d2b35234 RS |
4798 | else |
4799 | { | |
4800 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4801 | old_point = PT; | |
4802 | } | |
7ab12479 | 4803 | |
fd482be5 JB |
4804 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4805 | f = XFRAME (frame); | |
aa35ba9e | 4806 | |
fd482be5 JB |
4807 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4808 | However, there is other stuff we should still try to do below. */ | |
4809 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4810 | { |
fd482be5 JB |
4811 | register struct window *w; |
4812 | register struct saved_window *p; | |
5500c422 GM |
4813 | struct window *root_window; |
4814 | struct window **leaf_windows; | |
4815 | int n_leaf_windows; | |
c4280705 | 4816 | int k, i, n; |
fd482be5 JB |
4817 | |
4818 | /* If the frame has been resized since this window configuration was | |
4819 | made, we change the frame to the size specified in the | |
4820 | configuration, restore the configuration, and then resize it | |
4821 | back. We keep track of the prevailing height in these variables. */ | |
4822 | int previous_frame_height = FRAME_HEIGHT (f); | |
4823 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4824 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4825 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4826 | |
d2b35234 RS |
4827 | /* The mouse highlighting code could get screwed up |
4828 | if it runs during this. */ | |
4829 | BLOCK_INPUT; | |
4830 | ||
fd482be5 JB |
4831 | if (XFASTINT (data->frame_height) != previous_frame_height |
4832 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4833 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4834 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4835 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4836 | if (XFASTINT (data->frame_menu_bar_lines) |
4837 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4838 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4839 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4840 | if (XFASTINT (data->frame_tool_bar_lines) |
4841 | != previous_frame_tool_bar_lines) | |
4842 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4843 | #endif |
217f2871 | 4844 | #endif |
fd482be5 | 4845 | |
719eaeb1 GM |
4846 | /* "Swap out" point from the selected window |
4847 | into its buffer. We do this now, before | |
4848 | restoring the window contents, and prevent it from | |
4849 | being done later on when we select a new window. */ | |
596ae0cf RS |
4850 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4851 | { | |
4852 | w = XWINDOW (selected_window); | |
4853 | set_marker_both (w->pointm, | |
4854 | w->buffer, | |
4855 | BUF_PT (XBUFFER (w->buffer)), | |
4856 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4857 | } | |
4858 | ||
fd482be5 | 4859 | windows_or_buffers_changed++; |
29aeee73 | 4860 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4861 | |
5500c422 GM |
4862 | /* Problem: Freeing all matrices and later allocating them again |
4863 | is a serious redisplay flickering problem. What we would | |
4864 | really like to do is to free only those matrices not reused | |
4865 | below. */ | |
4866 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4867 | leaf_windows | |
4868 | = (struct window **) alloca (count_windows (root_window) | |
4869 | * sizeof (struct window *)); | |
4870 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4871 | ||
756b6edc RS |
4872 | /* Temporarily avoid any problems with windows that are smaller |
4873 | than they are supposed to be. */ | |
4874 | window_min_height = 1; | |
4875 | window_min_width = 1; | |
4876 | ||
fd482be5 JB |
4877 | /* Kludge Alert! |
4878 | Mark all windows now on frame as "deleted". | |
4879 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4880 | |
fd482be5 JB |
4881 | Save their current buffers in their height fields, since we may |
4882 | need it later, if a buffer saved in the configuration is now | |
4883 | dead. */ | |
4884 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4885 | ||
4886 | for (k = 0; k < saved_windows->size; k++) | |
4887 | { | |
4888 | p = SAVED_WINDOW_N (saved_windows, k); | |
4889 | w = XWINDOW (p->window); | |
4890 | w->next = Qnil; | |
7ab12479 | 4891 | |
fd482be5 JB |
4892 | if (!NILP (p->parent)) |
4893 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4894 | XFASTINT (p->parent))->window; | |
4895 | else | |
4896 | w->parent = Qnil; | |
7ab12479 | 4897 | |
fd482be5 | 4898 | if (!NILP (p->prev)) |
7ab12479 | 4899 | { |
fd482be5 JB |
4900 | w->prev = SAVED_WINDOW_N (saved_windows, |
4901 | XFASTINT (p->prev))->window; | |
4902 | XWINDOW (w->prev)->next = p->window; | |
4903 | } | |
4904 | else | |
4905 | { | |
4906 | w->prev = Qnil; | |
4907 | if (!NILP (w->parent)) | |
4908 | { | |
4909 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4910 | { | |
4911 | XWINDOW (w->parent)->vchild = p->window; | |
4912 | XWINDOW (w->parent)->hchild = Qnil; | |
4913 | } | |
4914 | else | |
4915 | { | |
4916 | XWINDOW (w->parent)->hchild = p->window; | |
4917 | XWINDOW (w->parent)->vchild = Qnil; | |
4918 | } | |
4919 | } | |
4920 | } | |
4921 | ||
4922 | /* If we squirreled away the buffer in the window's height, | |
4923 | restore it now. */ | |
017b2bad | 4924 | if (BUFFERP (w->height)) |
fd482be5 JB |
4925 | w->buffer = w->height; |
4926 | w->left = p->left; | |
4927 | w->top = p->top; | |
4928 | w->width = p->width; | |
4929 | w->height = p->height; | |
4930 | w->hscroll = p->hscroll; | |
ea68264b | 4931 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 4932 | w->display_table = p->display_table; |
a1d58e5b GM |
4933 | w->orig_top = p->orig_top; |
4934 | w->orig_height = p->orig_height; | |
d834a2e9 | 4935 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4936 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4937 | |
4938 | /* Reinstall the saved buffer and pointers into it. */ | |
4939 | if (NILP (p->buffer)) | |
4940 | w->buffer = p->buffer; | |
4941 | else | |
4942 | { | |
4943 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4944 | /* If saved buffer is alive, install it. */ | |
4945 | { | |
4946 | w->buffer = p->buffer; | |
4947 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4948 | set_marker_restricted (w->start, p->start, w->buffer); |
4949 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4950 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4951 | p->mark, w->buffer); |
fd482be5 JB |
4952 | |
4953 | /* As documented in Fcurrent_window_configuration, don't | |
4954 | save the location of point in the buffer which was current | |
4955 | when the window configuration was recorded. */ | |
6b54027b RS |
4956 | if (!EQ (p->buffer, new_current_buffer) |
4957 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4958 | Fgoto_char (w->pointm); |
4959 | } | |
52a68e98 RS |
4960 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4961 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4962 | { |
fd482be5 JB |
4963 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4964 | /* This will set the markers to beginning of visible | |
4965 | range. */ | |
4966 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4967 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4968 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4969 | } |
4970 | else | |
fd482be5 | 4971 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4972 | are real. */ |
7ab12479 | 4973 | { |
fd482be5 JB |
4974 | /* Set window markers at start of visible range. */ |
4975 | if (XMARKER (w->start)->buffer == 0) | |
4976 | set_marker_restricted (w->start, make_number (0), | |
4977 | w->buffer); | |
4978 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4979 | set_marker_restricted_both (w->pointm, w->buffer, |
4980 | BUF_PT (XBUFFER (w->buffer)), | |
4981 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4982 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4983 | } |
4984 | } | |
4985 | } | |
9ace597f | 4986 | |
fd482be5 | 4987 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
4988 | /* Prevent "swapping out point" in the old selected window |
4989 | using the buffer that has been restored into it. | |
4990 | That swapping out has already been done, | |
4991 | near the beginning of this function. */ | |
4992 | selected_window = Qnil; | |
fd482be5 | 4993 | Fselect_window (data->current_window); |
396a830c RS |
4994 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
4995 | = selected_window; | |
7ab12479 | 4996 | |
db269683 | 4997 | if (NILP (data->focus_frame) |
017b2bad | 4998 | || (FRAMEP (data->focus_frame) |
db269683 JB |
4999 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5000 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5001 | |
fd482be5 JB |
5002 | #if 0 /* I don't understand why this is needed, and it causes problems |
5003 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5004 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5005 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5006 | 0, 0); |
fd482be5 JB |
5007 | #endif |
5008 | ||
5009 | /* Set the screen height to the value it had before this function. */ | |
5010 | if (previous_frame_height != FRAME_HEIGHT (f) | |
5011 | || previous_frame_width != FRAME_WIDTH (f)) | |
5012 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 5013 | 0, 0, 0); |
e3678b64 | 5014 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5015 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5016 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5017 | make_number (0)); | |
4314246f | 5018 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5019 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5020 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5021 | make_number (0)); | |
4314246f | 5022 | #endif |
217f2871 | 5023 | #endif |
d2b35234 | 5024 | |
5500c422 | 5025 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5026 | for (i = n = 0; i < n_leaf_windows; ++i) |
5027 | { | |
5028 | if (NILP (leaf_windows[i]->buffer)) | |
5029 | { | |
5030 | /* Assert it's not reused as a combination. */ | |
5031 | xassert (NILP (leaf_windows[i]->hchild) | |
5032 | && NILP (leaf_windows[i]->vchild)); | |
5033 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5034 | } |
5035 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5036 | ++n; | |
5037 | } | |
5038 | ||
5039 | /* If more than one window shows the new and old current buffer, | |
5040 | don't try to preserve point in that buffer. */ | |
5041 | if (old_point > 0 && n > 1) | |
5042 | old_point = -1; | |
5500c422 GM |
5043 | |
5044 | adjust_glyphs (f); | |
5045 | ||
d2b35234 | 5046 | UNBLOCK_INPUT; |
756b6edc | 5047 | |
478292ed RS |
5048 | /* Fselect_window will have made f the selected frame, so we |
5049 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5050 | selected window too, but that doesn't make the call to | |
5051 | Fselect_window above totally superfluous; it still sets f's | |
5052 | selected window. */ | |
5053 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5054 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5055 | |
5056 | if (! NILP (Vwindow_configuration_change_hook) | |
5057 | && ! NILP (Vrun_hooks)) | |
5058 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5059 | } | |
bdc727bf JB |
5060 | |
5061 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
5062 | { |
5063 | Fset_buffer (new_current_buffer); | |
5064 | ||
5065 | /* If the buffer that is current now is the same | |
5066 | that was current before setting the window configuration, | |
5067 | don't alter its PT. */ | |
5068 | if (old_point >= 0) | |
5069 | SET_PT (old_point); | |
5070 | } | |
bdc727bf | 5071 | |
478292ed RS |
5072 | /* Restore the minimum heights recorded in the configuration. */ |
5073 | window_min_height = XINT (data->min_height); | |
5074 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5075 | |
478292ed | 5076 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 5077 | |
3f8ab7bd | 5078 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5079 | } |
5080 | ||
44fa5b1e | 5081 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5082 | by setting their buffers to nil. */ |
5083 | ||
fd482be5 | 5084 | void |
7ab12479 JB |
5085 | delete_all_subwindows (w) |
5086 | register struct window *w; | |
5087 | { | |
265a9e55 | 5088 | if (!NILP (w->next)) |
7ab12479 | 5089 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5090 | if (!NILP (w->vchild)) |
7ab12479 | 5091 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5092 | if (!NILP (w->hchild)) |
7ab12479 | 5093 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
5094 | |
5095 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
5096 | ||
86e48436 RS |
5097 | if (!NILP (w->buffer)) |
5098 | unshow_buffer (w); | |
5099 | ||
605be8af JB |
5100 | /* We set all three of these fields to nil, to make sure that we can |
5101 | distinguish this dead window from any live window. Live leaf | |
5102 | windows will have buffer set, and combination windows will have | |
5103 | vchild or hchild set. */ | |
5104 | w->buffer = Qnil; | |
5105 | w->vchild = Qnil; | |
5106 | w->hchild = Qnil; | |
acf70840 GM |
5107 | |
5108 | Vwindow_list = Qnil; | |
7ab12479 JB |
5109 | } |
5110 | \f | |
5111 | static int | |
5112 | count_windows (window) | |
5113 | register struct window *window; | |
5114 | { | |
5115 | register int count = 1; | |
265a9e55 | 5116 | if (!NILP (window->next)) |
7ab12479 | 5117 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5118 | if (!NILP (window->vchild)) |
7ab12479 | 5119 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5120 | if (!NILP (window->hchild)) |
7ab12479 JB |
5121 | count += count_windows (XWINDOW (window->hchild)); |
5122 | return count; | |
5123 | } | |
5124 | ||
5500c422 GM |
5125 | |
5126 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
5127 | Value is last index + 1. */ | |
5128 | ||
5129 | static int | |
5130 | get_leaf_windows (w, flat, i) | |
5131 | struct window *w; | |
5132 | struct window **flat; | |
5133 | int i; | |
5134 | { | |
5135 | while (w) | |
5136 | { | |
5137 | if (!NILP (w->hchild)) | |
5138 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5139 | else if (!NILP (w->vchild)) | |
5140 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
5141 | else | |
5142 | flat[i++] = w; | |
5143 | ||
5144 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5145 | } | |
5146 | ||
5147 | return i; | |
5148 | } | |
5149 | ||
5150 | ||
5151 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5152 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5153 | can be returned. */ | |
5154 | ||
5155 | struct glyph * | |
5156 | get_phys_cursor_glyph (w) | |
5157 | struct window *w; | |
5158 | { | |
5159 | struct glyph_row *row; | |
5160 | struct glyph *glyph; | |
5161 | ||
5162 | if (w->phys_cursor.vpos >= 0 | |
5163 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5164 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5165 | row->enabled_p) | |
5166 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5167 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5168 | else | |
5169 | glyph = NULL; | |
5170 | ||
5171 | return glyph; | |
5172 | } | |
5173 | ||
5174 | ||
7ab12479 JB |
5175 | static int |
5176 | save_window_save (window, vector, i) | |
5177 | Lisp_Object window; | |
5178 | struct Lisp_Vector *vector; | |
5179 | int i; | |
5180 | { | |
5181 | register struct saved_window *p; | |
5182 | register struct window *w; | |
5183 | register Lisp_Object tem; | |
5184 | ||
265a9e55 | 5185 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5186 | { |
5187 | p = SAVED_WINDOW_N (vector, i); | |
5188 | w = XWINDOW (window); | |
5189 | ||
d834a2e9 | 5190 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
5191 | p->window = window; |
5192 | p->buffer = w->buffer; | |
5193 | p->left = w->left; | |
5194 | p->top = w->top; | |
5195 | p->width = w->width; | |
5196 | p->height = w->height; | |
5197 | p->hscroll = w->hscroll; | |
ea68264b | 5198 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5199 | p->display_table = w->display_table; |
a1d58e5b GM |
5200 | p->orig_top = w->orig_top; |
5201 | p->orig_height = w->orig_height; | |
265a9e55 | 5202 | if (!NILP (w->buffer)) |
7ab12479 JB |
5203 | { |
5204 | /* Save w's value of point in the window configuration. | |
5205 | If w is the selected window, then get the value of point | |
5206 | from the buffer; pointm is garbage in the selected window. */ | |
5207 | if (EQ (window, selected_window)) | |
5208 | { | |
5209 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5210 | set_marker_both (p->pointm, w->buffer, |
5211 | BUF_PT (XBUFFER (w->buffer)), | |
5212 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5213 | } |
5214 | else | |
eeb82665 | 5215 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5216 | |
eeb82665 | 5217 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5218 | p->start_at_line_beg = w->start_at_line_beg; |
5219 | ||
5220 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 5221 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5222 | } |
5223 | else | |
5224 | { | |
5225 | p->pointm = Qnil; | |
5226 | p->start = Qnil; | |
5227 | p->mark = Qnil; | |
5228 | p->start_at_line_beg = Qnil; | |
5229 | } | |
5230 | ||
265a9e55 | 5231 | if (NILP (w->parent)) |
7ab12479 JB |
5232 | p->parent = Qnil; |
5233 | else | |
5234 | p->parent = XWINDOW (w->parent)->temslot; | |
5235 | ||
265a9e55 | 5236 | if (NILP (w->prev)) |
7ab12479 JB |
5237 | p->prev = Qnil; |
5238 | else | |
5239 | p->prev = XWINDOW (w->prev)->temslot; | |
5240 | ||
265a9e55 | 5241 | if (!NILP (w->vchild)) |
7ab12479 | 5242 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5243 | if (!NILP (w->hchild)) |
7ab12479 JB |
5244 | i = save_window_save (w->hchild, vector, i); |
5245 | } | |
5246 | ||
5247 | return i; | |
5248 | } | |
5249 | ||
a0d76c27 | 5250 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5251 | Scurrent_window_configuration, 0, 1, 0, |
5252 | doc: /* Return an object representing the current window configuration of FRAME. | |
5253 | If FRAME is nil or omitted, use the selected frame. | |
5254 | This describes the number of windows, their sizes and current buffers, | |
5255 | and for each displayed buffer, where display starts, and the positions of | |
5256 | point and mark. An exception is made for point in the current buffer: | |
5257 | its value is -not- saved. | |
5258 | This also records the currently selected frame, and FRAME's focus | |
5259 | redirection (see `redirect-frame-focus'). */) | |
5260 | (frame) | |
44fa5b1e | 5261 | Lisp_Object frame; |
7ab12479 JB |
5262 | { |
5263 | register Lisp_Object tem; | |
5264 | register int n_windows; | |
5265 | register struct save_window_data *data; | |
da2792e0 | 5266 | register struct Lisp_Vector *vec; |
7ab12479 | 5267 | register int i; |
44fa5b1e | 5268 | FRAME_PTR f; |
43bad991 | 5269 | |
44fa5b1e | 5270 | if (NILP (frame)) |
1ae1a37d | 5271 | frame = selected_frame; |
b7826503 | 5272 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 5273 | f = XFRAME (frame); |
7ab12479 | 5274 | |
44fa5b1e | 5275 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 5276 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
5277 | data = (struct save_window_data *)vec; |
5278 | ||
d834a2e9 KH |
5279 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
5280 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
5281 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 5282 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 5283 | data->selected_frame = selected_frame; |
44fa5b1e | 5284 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5285 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 5286 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 5287 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5288 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
5289 | XSETINT (data->min_height, window_min_height); |
5290 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5291 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5292 | data->saved_windows = tem; | |
5293 | for (i = 0; i < n_windows; i++) | |
5294 | XVECTOR (tem)->contents[i] | |
5295 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 5296 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5297 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5298 | return (tem); |
5299 | } | |
5300 | ||
5301 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 PJ |
5302 | 0, UNEVALLED, 0, |
5303 | doc: /* Execute body, preserving window sizes and contents. | |
5304 | Restore which buffer appears in which window, where display starts, | |
5305 | and the value of point and mark for each window. | |
5306 | Also restore the choice of selected window. | |
5307 | Also restore which buffer is current. | |
6924dda6 MB |
5308 | Does not restore the value of point in current buffer. |
5309 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 5310 | (args) |
7ab12479 JB |
5311 | Lisp_Object args; |
5312 | { | |
5313 | register Lisp_Object val; | |
5314 | register int count = specpdl_ptr - specpdl; | |
5315 | ||
5316 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5317 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5318 | val = Fprogn (args); |
5319 | return unbind_to (count, val); | |
5320 | } | |
5500c422 GM |
5321 | |
5322 | \f | |
5323 | /*********************************************************************** | |
5324 | Marginal Areas | |
5325 | ***********************************************************************/ | |
5326 | ||
5327 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5328 | 2, 3, 0, |
fdb82f93 PJ |
5329 | doc: /* Set width of marginal areas of window WINDOW. |
5330 | If window is nil, set margins of the currently selected window. | |
5331 | First parameter LEFT-WIDTH specifies the number of character | |
5332 | cells to reserve for the left marginal area. Second parameter | |
5333 | RIGHT-WIDTH does the same for the right marginal area. | |
5334 | A nil width parameter means no margin. */) | |
5335 | (window, left, right) | |
5500c422 GM |
5336 | Lisp_Object window, left, right; |
5337 | { | |
5338 | struct window *w = decode_window (window); | |
5500c422 GM |
5339 | |
5340 | if (!NILP (left)) | |
b7826503 | 5341 | CHECK_NUMBER_OR_FLOAT (left); |
5500c422 | 5342 | if (!NILP (right)) |
b7826503 | 5343 | CHECK_NUMBER_OR_FLOAT (right); |
5500c422 GM |
5344 | |
5345 | /* Check widths < 0 and translate a zero width to nil. | |
5346 | Margins that are too wide have to be checked elsewhere. */ | |
5347 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5348 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5349 | XSETFASTINT (left, 0); |
5350 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5351 | left = Qnil; | |
5352 | ||
5353 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 5354 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5355 | XSETFASTINT (right, 0); |
5356 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5357 | right = Qnil; | |
5358 | ||
5359 | w->left_margin_width = left; | |
5360 | w->right_margin_width = right; | |
5361 | ||
5362 | ++windows_or_buffers_changed; | |
5363 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5364 | return Qnil; | |
5365 | } | |
5366 | ||
5367 | ||
5368 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5369 | 0, 1, 0, | |
fdb82f93 PJ |
5370 | doc: /* Get width of marginal areas of window WINDOW. |
5371 | If WINDOW is omitted or nil, use the currently selected window. | |
5372 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
5373 | If a marginal area does not exist, its width will be returned | |
5374 | as nil. */) | |
5375 | (window) | |
5500c422 GM |
5376 | Lisp_Object window; |
5377 | { | |
5378 | struct window *w = decode_window (window); | |
5379 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5380 | } | |
5381 | ||
5382 | ||
7ab12479 | 5383 | \f |
5500c422 GM |
5384 | /*********************************************************************** |
5385 | Smooth scrolling | |
5386 | ***********************************************************************/ | |
5387 | ||
5388 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
fdb82f93 PJ |
5389 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
5390 | Use the selected window if WINDOW is nil or omitted. | |
5391 | Value is a multiple of the canonical character height of WINDOW. */) | |
5392 | (window) | |
5500c422 GM |
5393 | Lisp_Object window; |
5394 | { | |
47004952 | 5395 | Lisp_Object result; |
5500c422 GM |
5396 | struct frame *f; |
5397 | struct window *w; | |
5398 | ||
5399 | if (NILP (window)) | |
5400 | window = selected_window; | |
47004952 | 5401 | else |
b7826503 | 5402 | CHECK_WINDOW (window); |
5500c422 GM |
5403 | w = XWINDOW (window); |
5404 | f = XFRAME (w->frame); | |
5405 | ||
5406 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5407 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5408 | else |
47004952 GM |
5409 | result = make_number (0); |
5410 | return result; | |
5500c422 GM |
5411 | } |
5412 | ||
5413 | ||
5414 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 | 5415 | 2, 2, 0, |
fdb82f93 | 5416 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
b0f906c8 EZ |
5417 | WINDOW nil means use the selected window. VSCROLL is a non-negative |
5418 | multiple of the canonical character height of WINDOW. */) | |
fdb82f93 | 5419 | (window, vscroll) |
47004952 | 5420 | Lisp_Object window, vscroll; |
5500c422 GM |
5421 | { |
5422 | struct window *w; | |
5423 | struct frame *f; | |
5424 | ||
5500c422 GM |
5425 | if (NILP (window)) |
5426 | window = selected_window; | |
47004952 | 5427 | else |
b7826503 PJ |
5428 | CHECK_WINDOW (window); |
5429 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
47004952 | 5430 | |
5500c422 GM |
5431 | w = XWINDOW (window); |
5432 | f = XFRAME (w->frame); | |
5433 | ||
5434 | if (FRAME_WINDOW_P (f)) | |
5435 | { | |
5436 | int old_dy = w->vscroll; | |
47004952 GM |
5437 | |
5438 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5439 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5440 | |
5441 | /* Adjust glyph matrix of the frame if the virtual display | |
5442 | area becomes larger than before. */ | |
5443 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5444 | adjust_glyphs (f); | |
5445 | ||
5446 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5447 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5448 | } |
5449 | ||
47004952 | 5450 | return Fwindow_vscroll (window); |
5500c422 GM |
5451 | } |
5452 | ||
7bbb5782 GM |
5453 | \f |
5454 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5455 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5456 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5457 | |
5458 | void | |
f95464e4 | 5459 | foreach_window (f, fn, user_data) |
7bbb5782 | 5460 | struct frame *f; |
f95464e4 GM |
5461 | int (* fn) P_ ((struct window *, void *)); |
5462 | void *user_data; | |
7bbb5782 | 5463 | { |
f95464e4 | 5464 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5465 | } |
5466 | ||
5467 | ||
5468 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5469 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5470 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5471 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5472 | |
67492200 | 5473 | static int |
f95464e4 | 5474 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5475 | struct window *w; |
f95464e4 GM |
5476 | int (* fn) P_ ((struct window *, void *)); |
5477 | void *user_data; | |
7bbb5782 | 5478 | { |
67492200 GM |
5479 | int cont; |
5480 | ||
5481 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5482 | { |
5483 | if (!NILP (w->hchild)) | |
f95464e4 | 5484 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5485 | else if (!NILP (w->vchild)) |
f95464e4 | 5486 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
0f532a9a GM |
5487 | else |
5488 | cont = fn (w, user_data); | |
7bbb5782 GM |
5489 | |
5490 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5491 | } | |
67492200 GM |
5492 | |
5493 | return cont; | |
7bbb5782 GM |
5494 | } |
5495 | ||
5496 | ||
6d194a45 | 5497 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 5498 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5499 | the window start. */ |
5500 | ||
67492200 | 5501 | static int |
7bbb5782 GM |
5502 | freeze_window_start (w, freeze_p) |
5503 | struct window *w; | |
f95464e4 | 5504 | void *freeze_p; |
7bbb5782 GM |
5505 | { |
5506 | if (w == XWINDOW (selected_window) | |
5507 | || MINI_WINDOW_P (w) | |
5508 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5509 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5510 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5511 | freeze_p = NULL; |
7bbb5782 | 5512 | |
f95464e4 | 5513 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5514 | return 1; |
7bbb5782 GM |
5515 | } |
5516 | ||
5517 | ||
5518 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5519 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5520 | means freeze the window start. */ | |
5521 | ||
5522 | void | |
5523 | freeze_window_starts (f, freeze_p) | |
5524 | struct frame *f; | |
5525 | int freeze_p; | |
5526 | { | |
cbccabec | 5527 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5528 | } |
5500c422 GM |
5529 | |
5530 | \f | |
5531 | /*********************************************************************** | |
5532 | Initialization | |
5533 | ***********************************************************************/ | |
5534 | ||
cbff28e8 RS |
5535 | /* Return 1 if window configurations C1 and C2 |
5536 | describe the same state of affairs. This is used by Fequal. */ | |
5537 | ||
5538 | int | |
2f8274be | 5539 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5540 | Lisp_Object c1, c2; |
2f8274be | 5541 | int ignore_positions; |
cbff28e8 RS |
5542 | { |
5543 | register struct save_window_data *d1, *d2; | |
5544 | struct Lisp_Vector *sw1, *sw2; | |
5545 | int i; | |
5546 | ||
4d3edcb4 GM |
5547 | if (!WINDOW_CONFIGURATIONP (c1)) |
5548 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5549 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5550 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5551 | ||
cbff28e8 RS |
5552 | d1 = (struct save_window_data *) XVECTOR (c1); |
5553 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5554 | sw1 = XVECTOR (d1->saved_windows); | |
5555 | sw2 = XVECTOR (d2->saved_windows); | |
5556 | ||
5557 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5558 | return 0; | |
5559 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5560 | return 0; | |
5561 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5562 | return 0; | |
5563 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5564 | return 0; | |
5565 | /* Don't compare the current_window field directly. | |
5566 | Instead see w1_is_current and w2_is_current, below. */ | |
5567 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5568 | return 0; | |
2f8274be RS |
5569 | if (! ignore_positions) |
5570 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5571 | return 0; | |
cbff28e8 RS |
5572 | /* Don't compare the root_window field. |
5573 | We don't require the two configurations | |
5574 | to use the same window object, | |
5575 | and the two root windows must be equivalent | |
5576 | if everything else compares equal. */ | |
5577 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5578 | return 0; | |
5579 | if (! EQ (d1->min_width, d2->min_width)) | |
5580 | return 0; | |
5581 | if (! EQ (d1->min_height, d2->min_height)) | |
5582 | return 0; | |
5583 | ||
5584 | /* Verify that the two confis have the same number of windows. */ | |
5585 | if (sw1->size != sw2->size) | |
5586 | return 0; | |
5587 | ||
5588 | for (i = 0; i < sw1->size; i++) | |
5589 | { | |
5590 | struct saved_window *p1, *p2; | |
5591 | int w1_is_current, w2_is_current; | |
5592 | ||
5593 | p1 = SAVED_WINDOW_N (sw1, i); | |
5594 | p2 = SAVED_WINDOW_N (sw2, i); | |
5595 | ||
5596 | /* Verify that the current windows in the two | |
5597 | configurations correspond to each other. */ | |
5598 | w1_is_current = EQ (d1->current_window, p1->window); | |
5599 | w2_is_current = EQ (d2->current_window, p2->window); | |
5600 | ||
5601 | if (w1_is_current != w2_is_current) | |
5602 | return 0; | |
5603 | ||
5604 | /* Verify that the corresponding windows do match. */ | |
5605 | if (! EQ (p1->buffer, p2->buffer)) | |
5606 | return 0; | |
5607 | if (! EQ (p1->left, p2->left)) | |
5608 | return 0; | |
5609 | if (! EQ (p1->top, p2->top)) | |
5610 | return 0; | |
5611 | if (! EQ (p1->width, p2->width)) | |
5612 | return 0; | |
5613 | if (! EQ (p1->height, p2->height)) | |
5614 | return 0; | |
cbff28e8 RS |
5615 | if (! EQ (p1->display_table, p2->display_table)) |
5616 | return 0; | |
5617 | if (! EQ (p1->parent, p2->parent)) | |
5618 | return 0; | |
5619 | if (! EQ (p1->prev, p2->prev)) | |
5620 | return 0; | |
2f8274be RS |
5621 | if (! ignore_positions) |
5622 | { | |
5623 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5624 | return 0; | |
ea68264b GM |
5625 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
5626 | return 0; | |
2f8274be RS |
5627 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
5628 | return 0; | |
5629 | if (NILP (Fequal (p1->start, p2->start))) | |
5630 | return 0; | |
5631 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5632 | return 0; | |
5633 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5634 | return 0; | |
5635 | } | |
cbff28e8 RS |
5636 | } |
5637 | ||
5638 | return 1; | |
5639 | } | |
2f8274be RS |
5640 | |
5641 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5642 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
5643 | doc: /* Compare two window configurations as regards the structure of windows. |
5644 | This function ignores details such as the values of point and mark | |
5645 | and scrolling positions. */) | |
5646 | (x, y) | |
2f8274be RS |
5647 | Lisp_Object x, y; |
5648 | { | |
5649 | if (compare_window_configurations (x, y, 1)) | |
5650 | return Qt; | |
5651 | return Qnil; | |
5652 | } | |
cbff28e8 | 5653 | \f |
dfcf069d | 5654 | void |
7ab12479 JB |
5655 | init_window_once () |
5656 | { | |
1ae1a37d GM |
5657 | struct frame *f = make_terminal_frame (); |
5658 | XSETFRAME (selected_frame, f); | |
5659 | Vterminal_frame = selected_frame; | |
5660 | minibuf_window = f->minibuffer_window; | |
5661 | selected_window = f->selected_window; | |
5662 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5663 | |
5664 | window_initialized = 1; | |
7ab12479 JB |
5665 | } |
5666 | ||
67492200 GM |
5667 | void |
5668 | init_window () | |
5669 | { | |
5670 | Vwindow_list = Qnil; | |
5671 | } | |
5672 | ||
dfcf069d | 5673 | void |
7ab12479 JB |
5674 | syms_of_window () |
5675 | { | |
8a37516b GM |
5676 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5677 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5678 | |
543f5fb1 RS |
5679 | staticpro (&Qwindow_configuration_change_hook); |
5680 | Qwindow_configuration_change_hook | |
5681 | = intern ("window-configuration-change-hook"); | |
5682 | ||
7ab12479 JB |
5683 | Qwindowp = intern ("windowp"); |
5684 | staticpro (&Qwindowp); | |
5685 | ||
3f8ab7bd RS |
5686 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5687 | staticpro (&Qwindow_configuration_p); | |
5688 | ||
806b4d9b JB |
5689 | Qwindow_live_p = intern ("window-live-p"); |
5690 | staticpro (&Qwindow_live_p); | |
605be8af | 5691 | |
2cccc823 | 5692 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5693 | staticpro (&Qtemp_buffer_show_hook); |
5694 | ||
67492200 GM |
5695 | staticpro (&Vwindow_list); |
5696 | ||
7ab12479 | 5697 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
5698 | doc: /* Non-nil means call as function to display a help buffer. |
5699 | The function is called with one argument, the buffer to be displayed. | |
5700 | Used by `with-output-to-temp-buffer'. | |
5701 | If this function is used, then it must do the entire job of showing | |
5702 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
5703 | Vtemp_buffer_show_function = Qnil; |
5704 | ||
5705 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
5706 | doc: /* If non-nil, function to call to handle `display-buffer'. |
5707 | It will receive two args, the buffer and a flag which if non-nil means | |
5708 | that the currently selected window is not acceptable. | |
5709 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' | |
5710 | work using this function. */); | |
7ab12479 JB |
5711 | Vdisplay_buffer_function = Qnil; |
5712 | ||
6529ed87 | 5713 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
5714 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
5715 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
5716 | Veven_window_heights = Qt; |
5717 | ||
7ab12479 | 5718 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 5719 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
5720 | Vminibuf_scroll_window = Qnil; |
5721 | ||
5722 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
fdb82f93 | 5723 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
5724 | Vother_window_scroll_buffer = Qnil; |
5725 | ||
44fa5b1e | 5726 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 5727 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 5728 | pop_up_frames = 0; |
7ab12479 | 5729 | |
9c3da604 | 5730 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
5731 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
5732 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
5733 | display_buffer_reuse_frames = 0; |
5734 | ||
44fa5b1e | 5735 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
5736 | doc: /* Function to call to handle automatic new frame creation. |
5737 | It is called with no arguments and should return a newly created frame. | |
5738 | ||
5739 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
5740 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 5741 | Vpop_up_frame_function = Qnil; |
7ab12479 | 5742 | |
a90712c2 | 5743 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 PJ |
5744 | doc: /* *List of buffer names that should have their own special frames. |
5745 | Displaying a buffer whose name is in this list makes a special frame for it | |
5746 | using `special-display-function'. See also `special-display-regexps'. | |
5747 | ||
5748 | An element of the list can be a list instead of just a string. | |
5749 | There are two ways to use a list as an element: | |
5750 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
5751 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5752 | In the latter case, FUNCTION is called with BUFFER as the first argument, | |
5753 | followed by OTHER-ARGS--it can display BUFFER in any way it likes. | |
5754 | All this is done by the function found in `special-display-function'. | |
5755 | ||
5756 | If this variable appears \"not to work\", because you add a name to it | |
5757 | but that buffer still appears in the selected window, look at the | |
5758 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5759 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5760 | Vspecial_display_buffer_names = Qnil; |
5761 | ||
5762 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 PJ |
5763 | doc: /* *List of regexps saying which buffers should have their own special frames. |
5764 | If a buffer name matches one of these regexps, it gets its own frame. | |
5765 | Displaying a buffer whose name is in this list makes a special frame for it | |
5766 | using `special-display-function'. | |
5767 | ||
5768 | An element of the list can be a list instead of just a string. | |
5769 | There are two ways to use a list as an element: | |
5770 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
5771 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5772 | In the latter case, FUNCTION is called with the buffer as first argument, | |
5773 | followed by OTHER-ARGS--it can display the buffer in any way it likes. | |
5774 | All this is done by the function found in `special-display-function'. | |
5775 | ||
5776 | If this variable appears \"not to work\", because you add a regexp to it | |
5777 | but the matching buffers still appear in the selected window, look at the | |
5778 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5779 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5780 | Vspecial_display_regexps = Qnil; |
5781 | ||
5782 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
5783 | doc: /* Function to call to make a new frame for a special buffer. |
5784 | It is called with two arguments, the buffer and optional buffer specific | |
5785 | data, and should return a window displaying that buffer. | |
5786 | The default value makes a separate frame for the buffer, | |
5787 | using `special-display-frame-alist' to specify the frame parameters. | |
5788 | ||
5789 | A buffer is special if its is listed in `special-display-buffer-names' | |
5790 | or matches a regexp in `special-display-regexps'. */); | |
a90712c2 RS |
5791 | Vspecial_display_function = Qnil; |
5792 | ||
855d8627 | 5793 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
5794 | doc: /* *List of buffer names that should appear in the selected window. |
5795 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
5796 | switches to it in the selected window, rather than making it appear | |
5797 | in some other window. | |
5798 | ||
5799 | An element of the list can be a cons cell instead of just a string. | |
5800 | Then the car must be a string, which specifies the buffer name. | |
5801 | This is for compatibility with `special-display-buffer-names'; | |
5802 | the cdr of the cons cell is ignored. | |
5803 | ||
5804 | See also `same-window-regexps'. */); | |
855d8627 RS |
5805 | Vsame_window_buffer_names = Qnil; |
5806 | ||
5807 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
5808 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
5809 | If a buffer name matches one of these regexps, then displaying it | |
5810 | using `display-buffer' or `pop-to-buffer' switches to it | |
5811 | in the selected window, rather than making it appear in some other window. | |
5812 | ||
5813 | An element of the list can be a cons cell instead of just a string. | |
5814 | Then the car must be a string, which specifies the buffer name. | |
5815 | This is for compatibility with `special-display-buffer-names'; | |
5816 | the cdr of the cons cell is ignored. | |
5817 | ||
5818 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
5819 | Vsame_window_regexps = Qnil; |
5820 | ||
7ab12479 | 5821 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 5822 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
5823 | pop_up_windows = 1; |
5824 | ||
5825 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 5826 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
5827 | next_screen_context_lines = 2; |
5828 | ||
5829 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
fdb82f93 PJ |
5830 | doc: /* *display-buffer would prefer to split the largest window if this large. |
5831 | If there is only one window, it is split regardless of this value. */); | |
7ab12479 JB |
5832 | split_height_threshold = 500; |
5833 | ||
5834 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 5835 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
5836 | window_min_height = 4; |
5837 | ||
5838 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 5839 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
5840 | window_min_width = 10; |
5841 | ||
5500c422 GM |
5842 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5843 | &Vscroll_preserve_screen_position, | |
fdb82f93 | 5844 | doc: /* *Non-nil means scroll commands move point to keep its screen line unchanged. */); |
5500c422 | 5845 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5846 | |
543f5fb1 RS |
5847 | DEFVAR_LISP ("window-configuration-change-hook", |
5848 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
5849 | doc: /* Functions to call when window configuration changes. |
5850 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
5851 | Vwindow_configuration_change_hook = Qnil; |
5852 | ||
b0b7ed0e | 5853 | DEFVAR_BOOL ("window-size-fixed", &window_size_fixed, |
fdb82f93 PJ |
5854 | doc: /* Non-nil in a buffer means windows displaying the buffer are fixed-size. |
5855 | Emacs won't change the size of any window displaying that buffer, | |
5856 | unless you explicitly change the size, or Emacs has no other choice. | |
5857 | This variable automatically becomes buffer-local when set. */); | |
b0b7ed0e GM |
5858 | Fmake_variable_buffer_local (Qwindow_size_fixed); |
5859 | window_size_fixed = 0; | |
5860 | ||
7ab12479 JB |
5861 | defsubr (&Sselected_window); |
5862 | defsubr (&Sminibuffer_window); | |
5863 | defsubr (&Swindow_minibuffer_p); | |
5864 | defsubr (&Swindowp); | |
806b4d9b | 5865 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5866 | defsubr (&Spos_visible_in_window_p); |
5867 | defsubr (&Swindow_buffer); | |
5868 | defsubr (&Swindow_height); | |
5869 | defsubr (&Swindow_width); | |
5870 | defsubr (&Swindow_hscroll); | |
5871 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5872 | defsubr (&Swindow_redisplay_end_trigger); |
5873 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5874 | defsubr (&Swindow_edges); |
d5783c40 JB |
5875 | defsubr (&Scoordinates_in_window_p); |
5876 | defsubr (&Swindow_at); | |
7ab12479 JB |
5877 | defsubr (&Swindow_point); |
5878 | defsubr (&Swindow_start); | |
5879 | defsubr (&Swindow_end); | |
5880 | defsubr (&Sset_window_point); | |
5881 | defsubr (&Sset_window_start); | |
5882 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5883 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5884 | defsubr (&Swindow_display_table); |
5885 | defsubr (&Sset_window_display_table); | |
5886 | defsubr (&Snext_window); | |
5887 | defsubr (&Sprevious_window); | |
5888 | defsubr (&Sother_window); | |
5889 | defsubr (&Sget_lru_window); | |
5890 | defsubr (&Sget_largest_window); | |
5891 | defsubr (&Sget_buffer_window); | |
5892 | defsubr (&Sdelete_other_windows); | |
5893 | defsubr (&Sdelete_windows_on); | |
5894 | defsubr (&Sreplace_buffer_in_windows); | |
5895 | defsubr (&Sdelete_window); | |
5896 | defsubr (&Sset_window_buffer); | |
5897 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5898 | defsubr (&Sspecial_display_p); |
5899 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5900 | defsubr (&Sdisplay_buffer); |
5901 | defsubr (&Ssplit_window); | |
5902 | defsubr (&Senlarge_window); | |
5903 | defsubr (&Sshrink_window); | |
5904 | defsubr (&Sscroll_up); | |
5905 | defsubr (&Sscroll_down); | |
5906 | defsubr (&Sscroll_left); | |
5907 | defsubr (&Sscroll_right); | |
ccd0664b | 5908 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5909 | defsubr (&Sscroll_other_window); |
5910 | defsubr (&Srecenter); | |
81fe0836 | 5911 | defsubr (&Swindow_text_height); |
7ab12479 JB |
5912 | defsubr (&Smove_to_window_line); |
5913 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5914 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5915 | defsubr (&Sset_window_configuration); |
5916 | defsubr (&Scurrent_window_configuration); | |
5917 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5918 | defsubr (&Sset_window_margins); |
5919 | defsubr (&Swindow_margins); | |
5920 | defsubr (&Swindow_vscroll); | |
5921 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5922 | defsubr (&Scompare_window_configurations); |
67492200 | 5923 | defsubr (&Swindow_list); |
7ab12479 JB |
5924 | } |
5925 | ||
dfcf069d | 5926 | void |
7ab12479 JB |
5927 | keys_of_window () |
5928 | { | |
5929 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5930 | initial_define_key (control_x_map, '2', "split-window"); | |
5931 | initial_define_key (control_x_map, '0', "delete-window"); | |
5932 | initial_define_key (control_x_map, 'o', "other-window"); | |
5933 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5934 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5935 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5936 | ||
5937 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5938 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5939 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5940 | ||
5941 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5942 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5943 | } |