Commit | Line | Data |
---|---|---|
7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
6529ed87 GM |
3 | Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000 |
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" |
44fa5b1e | 27 | #include "frame.h" |
7ab12479 JB |
28 | #include "window.h" |
29 | #include "commands.h" | |
30 | #include "indent.h" | |
31 | #include "termchar.h" | |
32 | #include "disptab.h" | |
dfcf069d | 33 | #include "dispextern.h" |
5500c422 GM |
34 | #include "blockinput.h" |
35 | #include "intervals.h" | |
36 | ||
6d55d620 | 37 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 38 | #include "xterm.h" |
5500c422 | 39 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
40 | #ifdef WINDOWSNT |
41 | #include "w32term.h" | |
42 | #endif | |
1e3c8885 EZ |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #endif | |
1a578e9b AC |
46 | #ifdef macintosh |
47 | #include "macterm.h" | |
48 | #endif | |
5500c422 GM |
49 | |
50 | #ifndef max | |
51 | #define max(a, b) ((a) < (b) ? (b) : (a)) | |
dfcf069d | 52 | #endif |
7ab12479 | 53 | |
5500c422 | 54 | |
3f8ab7bd | 55 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
8a37516b | 56 | Lisp_Object Qwindow_size_fixed, Qleft_bitmap_area, Qright_bitmap_area; |
233a4a2c | 57 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 58 | |
5e14b1fc | 59 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 60 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
61 | static int count_windows P_ ((struct window *)); |
62 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
63 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
64 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
65 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 66 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 67 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 68 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 69 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 70 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
86c8e823 | 71 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 72 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 73 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
74 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
75 | Lisp_Object)); | |
67492200 GM |
76 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
77 | Lisp_Object, int)); | |
78 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
79 | Lisp_Object *)); | |
f95464e4 GM |
80 | static int foreach_window_1 P_ ((struct window *, |
81 | int (* fn) (struct window *, void *), | |
82 | void *)); | |
cd2904bd | 83 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 84 | |
7ab12479 JB |
85 | /* This is the window in which the terminal's cursor should |
86 | be left when nothing is being done with it. This must | |
87 | always be a leaf window, and its buffer is selected by | |
88 | the top level editing loop at the end of each command. | |
89 | ||
90 | This value is always the same as | |
44fa5b1e | 91 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
92 | |
93 | Lisp_Object selected_window; | |
94 | ||
67492200 GM |
95 | /* A list of all windows for use by next_window and Fwindow_list. |
96 | Functions creating or deleting windows should invalidate this cache | |
97 | by setting it to nil. */ | |
98 | ||
99 | Lisp_Object Vwindow_list; | |
100 | ||
5500c422 GM |
101 | /* The mini-buffer window of the selected frame. |
102 | Note that you cannot test for mini-bufferness of an arbitrary window | |
103 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 104 | the selected window. */ |
5500c422 | 105 | |
7ab12479 JB |
106 | Lisp_Object minibuf_window; |
107 | ||
108 | /* Non-nil means it is the window for C-M-v to scroll | |
5500c422 GM |
109 | when the mini-buffer is selected. */ |
110 | ||
7ab12479 JB |
111 | Lisp_Object Vminibuf_scroll_window; |
112 | ||
113 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 114 | |
7ab12479 JB |
115 | Lisp_Object Vother_window_scroll_buffer; |
116 | ||
7ab12479 | 117 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 118 | |
7ab12479 JB |
119 | Lisp_Object Vtemp_buffer_show_function; |
120 | ||
121 | /* If a window gets smaller than either of these, it is removed. */ | |
5500c422 | 122 | |
7ab12479 JB |
123 | int window_min_height; |
124 | int window_min_width; | |
125 | ||
126 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 127 | |
7ab12479 JB |
128 | int pop_up_windows; |
129 | ||
44fa5b1e | 130 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 131 | |
44fa5b1e | 132 | int pop_up_frames; |
7ab12479 | 133 | |
9c3da604 GM |
134 | /* Nonzero means reuse existing frames for displaying buffers. */ |
135 | ||
136 | int display_buffer_reuse_frames; | |
137 | ||
7ab12479 | 138 | /* Non-nil means use this function instead of default */ |
5500c422 | 139 | |
44fa5b1e | 140 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
141 | |
142 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 143 | |
7ab12479 JB |
144 | Lisp_Object Vdisplay_buffer_function; |
145 | ||
6529ed87 GM |
146 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
147 | ||
148 | Lisp_Object Veven_window_heights; | |
149 | ||
a90712c2 | 150 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 151 | |
a90712c2 RS |
152 | Lisp_Object Vspecial_display_buffer_names; |
153 | ||
154 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 155 | |
a90712c2 RS |
156 | Lisp_Object Vspecial_display_regexps; |
157 | ||
158 | /* Function to pop up a special frame. */ | |
5500c422 | 159 | |
a90712c2 RS |
160 | Lisp_Object Vspecial_display_function; |
161 | ||
855d8627 | 162 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 163 | |
855d8627 RS |
164 | Lisp_Object Vsame_window_buffer_names; |
165 | ||
166 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 167 | |
855d8627 RS |
168 | Lisp_Object Vsame_window_regexps; |
169 | ||
a58ec57d | 170 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 171 | |
a58ec57d RS |
172 | Lisp_Object Qtemp_buffer_show_hook; |
173 | ||
37962e60 | 174 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 175 | if that window is more than this high. */ |
5500c422 | 176 | |
7ab12479 JB |
177 | int split_height_threshold; |
178 | ||
179 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 180 | |
7ab12479 JB |
181 | int next_screen_context_lines; |
182 | ||
183 | /* Incremented for each window created. */ | |
5500c422 | 184 | |
7ab12479 JB |
185 | static int sequence_number; |
186 | ||
5b03d3c0 | 187 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 188 | |
5b03d3c0 RS |
189 | static int window_initialized; |
190 | ||
543f5fb1 | 191 | /* Hook to run when window config changes. */ |
5500c422 | 192 | |
543f5fb1 RS |
193 | Lisp_Object Qwindow_configuration_change_hook; |
194 | Lisp_Object Vwindow_configuration_change_hook; | |
195 | ||
9317a85d RS |
196 | /* Nonzero means scroll commands try to put point |
197 | at the same screen height as previously. */ | |
9317a85d | 198 | |
5500c422 GM |
199 | Lisp_Object Vscroll_preserve_screen_position; |
200 | ||
201 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 202 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 203 | static int inhibit_frame_unsplittable; |
5500c422 | 204 | #endif /* 0 */ |
7d601aaa | 205 | |
7ab12479 | 206 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 | 207 | |
9317a85d RS |
208 | extern int scroll_margin; |
209 | ||
dba06815 | 210 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
211 | \f |
212 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
213 | "Returns t if OBJECT is a window.") |
214 | (object) | |
215 | Lisp_Object object; | |
7ab12479 | 216 | { |
413430c5 | 217 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
218 | } |
219 | ||
806b4d9b | 220 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
221 | "Returns t if OBJECT is a window which is currently visible.") |
222 | (object) | |
223 | Lisp_Object object; | |
605be8af | 224 | { |
413430c5 | 225 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
226 | } |
227 | ||
7ab12479 JB |
228 | Lisp_Object |
229 | make_window () | |
230 | { | |
cffec418 | 231 | Lisp_Object val; |
7ab12479 | 232 | register struct window *p; |
cffec418 KH |
233 | register struct Lisp_Vector *vec; |
234 | int i; | |
235 | ||
236 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
237 | for (i = 0; i < VECSIZE (struct window); i++) | |
238 | vec->contents[i] = Qnil; | |
239 | vec->size = VECSIZE (struct window); | |
5500c422 | 240 | p = (struct window *) vec; |
d834a2e9 KH |
241 | XSETFASTINT (p->sequence_number, ++sequence_number); |
242 | XSETFASTINT (p->left, 0); | |
243 | XSETFASTINT (p->top, 0); | |
244 | XSETFASTINT (p->height, 0); | |
245 | XSETFASTINT (p->width, 0); | |
246 | XSETFASTINT (p->hscroll, 0); | |
ea68264b | 247 | XSETFASTINT (p->min_hscroll, 0); |
f984d4fc | 248 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
249 | p->start = Fmake_marker (); |
250 | p->pointm = Fmake_marker (); | |
d834a2e9 | 251 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 252 | p->frame = Qnil; |
7ab12479 JB |
253 | p->display_table = Qnil; |
254 | p->dedicated = Qnil; | |
5500c422 GM |
255 | p->pseudo_window_p = 0; |
256 | bzero (&p->cursor, sizeof (p->cursor)); | |
257 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
258 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
259 | p->desired_matrix = p->current_matrix = 0; | |
260 | p->phys_cursor_type = -1; | |
261 | p->must_be_updated_p = 0; | |
262 | XSETFASTINT (p->window_end_vpos, 0); | |
263 | XSETFASTINT (p->window_end_pos, 0); | |
264 | p->window_end_valid = Qnil; | |
265 | p->vscroll = 0; | |
cffec418 | 266 | XSETWINDOW (val, p); |
5500c422 | 267 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 268 | p->frozen_window_start_p = 0; |
67492200 GM |
269 | |
270 | Vwindow_list = Qnil; | |
7ab12479 JB |
271 | return val; |
272 | } | |
273 | ||
274 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
275 | "Return the window that the cursor now appears in and commands apply to.") | |
276 | () | |
277 | { | |
278 | return selected_window; | |
279 | } | |
280 | ||
83762ba4 JB |
281 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
282 | "Return the window used now for minibuffers.\n\ | |
283 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
284 | used by that frame.") | |
285 | (frame) | |
286 | Lisp_Object frame; | |
7ab12479 | 287 | { |
83762ba4 | 288 | if (NILP (frame)) |
1ae1a37d GM |
289 | frame = selected_frame; |
290 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 | 291 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
292 | } |
293 | ||
605be8af | 294 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
295 | "Returns non-nil if WINDOW is a minibuffer window.") |
296 | (window) | |
297 | Lisp_Object window; | |
298 | { | |
299 | struct window *w = decode_window (window); | |
53bb6b99 | 300 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
301 | } |
302 | ||
303 | ||
7ab12479 | 304 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
81e4d465 | 305 | Spos_visible_in_window_p, 0, 3, 0, |
44fa5b1e | 306 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
53bb6b99 | 307 | Return nil if that position is scrolled vertically out of view.\n\ |
5cdb3cf3 MB |
308 | If a character is only partially visible, nil is returned, unless the\n\ |
309 | optional argument PARTIALLY is non-nil.\n\ | |
f28b75a9 | 310 | POS defaults to point in WINDOW; WINDOW defaults to the selected window.") |
5cdb3cf3 MB |
311 | (pos, window, partially) |
312 | Lisp_Object pos, window, partially; | |
7ab12479 JB |
313 | { |
314 | register struct window *w; | |
7ab12479 JB |
315 | register int posint; |
316 | register struct buffer *buf; | |
9a132b1f GM |
317 | struct text_pos top; |
318 | Lisp_Object in_window; | |
53bb6b99 | 319 | int fully_p; |
7ab12479 | 320 | |
f28b75a9 MB |
321 | w = decode_window (window); |
322 | buf = XBUFFER (w->buffer); | |
323 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
324 | ||
325 | if (!NILP (pos)) | |
7ab12479 JB |
326 | { |
327 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
328 | posint = XINT (pos); | |
329 | } | |
f28b75a9 MB |
330 | else if (w == XWINDOW (selected_window)) |
331 | posint = PT; | |
332 | else | |
333 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 334 | |
53bb6b99 | 335 | /* If position is above window start, it's not visible. */ |
5500c422 | 336 | if (posint < CHARPOS (top)) |
9a132b1f GM |
337 | in_window = Qnil; |
338 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
81e4d465 MB |
339 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) |
340 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
81e4d465 | 341 | { |
53bb6b99 GM |
342 | /* If frame is up-to-date, and POSINT is < window end pos, use |
343 | that info. This doesn't work for POSINT == end pos, because | |
344 | the window end pos is actually the position _after_ the last | |
345 | char in the window. */ | |
5cdb3cf3 | 346 | if (NILP (partially)) |
53bb6b99 | 347 | { |
5cdb3cf3 | 348 | pos_visible_p (w, posint, &fully_p, NILP (partially)); |
53bb6b99 GM |
349 | in_window = fully_p ? Qt : Qnil; |
350 | } | |
81e4d465 | 351 | else |
53bb6b99 | 352 | in_window = Qt; |
81e4d465 | 353 | } |
9a132b1f GM |
354 | else if (posint > BUF_ZV (buf)) |
355 | in_window = Qnil; | |
356 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
357 | /* If window start is out of range, do something reasonable. */ | |
358 | in_window = Qnil; | |
7ab12479 JB |
359 | else |
360 | { | |
5cdb3cf3 MB |
361 | if (pos_visible_p (w, posint, &fully_p, NILP (partially))) |
362 | in_window = !NILP (partially) || fully_p ? Qt : Qnil; | |
81e4d465 MB |
363 | else |
364 | in_window = Qnil; | |
7ab12479 | 365 | } |
9a132b1f GM |
366 | |
367 | return in_window; | |
7ab12479 | 368 | } |
53bb6b99 | 369 | |
7ab12479 JB |
370 | \f |
371 | static struct window * | |
372 | decode_window (window) | |
373 | register Lisp_Object window; | |
374 | { | |
265a9e55 | 375 | if (NILP (window)) |
7ab12479 JB |
376 | return XWINDOW (selected_window); |
377 | ||
605be8af | 378 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
379 | return XWINDOW (window); |
380 | } | |
381 | ||
382 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
383 | "Return the buffer that WINDOW is displaying.") | |
384 | (window) | |
385 | Lisp_Object window; | |
386 | { | |
387 | return decode_window (window)->buffer; | |
388 | } | |
389 | ||
390 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
391 | "Return the number of lines in WINDOW (including its mode line).") | |
392 | (window) | |
393 | Lisp_Object window; | |
394 | { | |
395 | return decode_window (window)->height; | |
396 | } | |
397 | ||
398 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
399 | "Return the number of display columns in WINDOW.\n\ |
400 | This is the width that is usable columns available for text in WINDOW.\n\ | |
401 | If you want to find out how many columns WINDOW takes up,\n\ | |
402 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
403 | (window) |
404 | Lisp_Object window; | |
405 | { | |
ee61d94e | 406 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
407 | } |
408 | ||
409 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
410 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
411 | (window) | |
412 | Lisp_Object window; | |
413 | { | |
414 | return decode_window (window)->hscroll; | |
415 | } | |
416 | ||
417 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
418 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
419 | NCOL should be zero or positive.") | |
420 | (window, ncol) | |
ea68264b | 421 | Lisp_Object window, ncol; |
7ab12479 | 422 | { |
ea68264b GM |
423 | struct window *w = decode_window (window); |
424 | int hscroll; | |
7ab12479 JB |
425 | |
426 | CHECK_NUMBER (ncol, 1); | |
ea68264b GM |
427 | hscroll = max (0, XINT (ncol)); |
428 | ||
429 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
430 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 431 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
ea68264b GM |
432 | |
433 | w->hscroll = w->min_hscroll = make_number (hscroll); | |
7ab12479 JB |
434 | return ncol; |
435 | } | |
436 | ||
190eb263 RS |
437 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
438 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
439 | "Return WINDOW's redisplay end trigger value.\n\ | |
440 | See `set-window-redisplay-end-trigger' for more information.") | |
441 | (window) | |
442 | Lisp_Object window; | |
443 | { | |
444 | return decode_window (window)->redisplay_end_trigger; | |
445 | } | |
446 | ||
447 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
448 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
449 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
450 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
451 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
452 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
453 | with two arguments: WINDOW, and the end trigger value.\n\ | |
454 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
455 | (window, value) |
456 | register Lisp_Object window, value; | |
457 | { | |
458 | register struct window *w; | |
459 | ||
460 | w = decode_window (window); | |
461 | w->redisplay_end_trigger = value; | |
462 | return value; | |
463 | } | |
464 | ||
7ab12479 JB |
465 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
466 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 467 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
468 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
469 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
470 | and its mode-line.") | |
471 | (window) | |
472 | Lisp_Object window; | |
473 | { | |
474 | register struct window *w = decode_window (window); | |
475 | ||
476 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 477 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
478 | Fcons (make_number (XFASTINT (w->top) |
479 | + XFASTINT (w->height)), | |
480 | Qnil)))); | |
481 | } | |
482 | ||
fbad6f9a | 483 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
484 | If it is not, return 0; |
485 | if it is in the window's text area, | |
486 | set *x and *y to its location relative to the upper left corner | |
487 | of the window, and | |
488 | return 1; | |
489 | if it is on the window's modeline, return 2; | |
490 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
491 | return 3. |
492 | if it is on the window's top line, return 4; | |
fbad6f9a GM |
493 | if it is in the bitmap area to the left/right of the window, |
494 | return 5 or 6, and convert *X and *Y to window-relative corrdinates. | |
5500c422 GM |
495 | |
496 | X and Y are frame relative pixel coordinates. */ | |
497 | ||
d5783c40 JB |
498 | static int |
499 | coordinates_in_window (w, x, y) | |
500 | register struct window *w; | |
501 | register int *x, *y; | |
502 | { | |
1cb794ba GM |
503 | /* Let's make this a global enum later, instead of using numbers |
504 | everywhere. */ | |
505 | enum {ON_NOTHING, ON_TEXT, ON_MODE_LINE, ON_VERTICAL_BORDER, | |
506 | ON_HEADER_LINE, ON_LEFT_FRINGE, ON_RIGHT_FRINGE}; | |
507 | ||
b0228ace GM |
508 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
509 | int left_x, right_x, top_y, bottom_y; | |
510 | int flags_area_width = FRAME_LEFT_FLAGS_AREA_WIDTH (f); | |
511 | int part; | |
512 | int ux = CANON_X_UNIT (f), uy = CANON_Y_UNIT (f); | |
513 | int x0 = XFASTINT (w->left) * ux; | |
514 | int x1 = x0 + XFASTINT (w->width) * ux; | |
515 | ||
516 | if (*x < x0 || *x >= x1) | |
517 | return ON_NOTHING; | |
518 | ||
466539bc EZ |
519 | /* In what's below, we subtract 1 when computing right_x because we |
520 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
521 | if (w->pseudo_window_p) |
522 | { | |
523 | left_x = 0; | |
b0228ace | 524 | right_x = XFASTINT (w->width) * CANON_X_UNIT (f) - 1; |
5500c422 GM |
525 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); |
526 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
527 | } | |
528 | else | |
529 | { | |
2add4349 | 530 | left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w) |
50df5e5a | 531 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
466539bc | 532 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1; |
2add4349 | 533 | top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w) |
50df5e5a | 534 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
5500c422 GM |
535 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); |
536 | } | |
37962e60 | 537 | |
1cb794ba GM |
538 | /* On the mode line or header line? If it's near the start of |
539 | the mode or header line of window that's has a horizontal | |
540 | sibling, say it's on the vertical line. That's to be able | |
541 | to resize windows horizontally in case we're using toolkit | |
542 | scroll bars. */ | |
b0228ace | 543 | |
1cb794ba | 544 | if (WINDOW_WANTS_MODELINE_P (w) |
b0228ace GM |
545 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) |
546 | && *y < bottom_y) | |
1cb794ba | 547 | { |
b0228ace GM |
548 | /* We're somewhere on the mode line. We consider the place |
549 | between mode lines of horizontally adjacent mode lines | |
550 | as the vertical border. If scroll bars on the left, | |
551 | return the right window. */ | |
552 | part = ON_MODE_LINE; | |
553 | ||
554 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
555 | { | |
556 | if (abs (*x - x0) < ux / 2) | |
557 | part = ON_VERTICAL_BORDER; | |
558 | } | |
559 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < ux / 2) | |
560 | part = ON_VERTICAL_BORDER; | |
1cb794ba | 561 | } |
b0228ace GM |
562 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
563 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
564 | && *y >= top_y) | |
565 | { | |
566 | part = ON_HEADER_LINE; | |
567 | ||
568 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
569 | { | |
570 | if (abs (*x - x0) < ux / 2) | |
571 | part = ON_VERTICAL_BORDER; | |
572 | } | |
573 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < ux / 2) | |
574 | part = ON_VERTICAL_BORDER; | |
575 | } | |
576 | /* Outside anything interesting? */ | |
577 | else if (*y < top_y | |
578 | || *y >= bottom_y | |
579 | || *x < (left_x | |
580 | - flags_area_width | |
581 | - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * ux) | |
582 | || *x > right_x + flags_area_width) | |
1cb794ba | 583 | { |
b0228ace | 584 | part = ON_NOTHING; |
1cb794ba | 585 | } |
b0228ace | 586 | else if (FRAME_WINDOW_P (f)) |
fbad6f9a | 587 | { |
447e9da0 GM |
588 | if (!w->pseudo_window_p |
589 | && !FRAME_HAS_VERTICAL_SCROLL_BARS (f) | |
590 | && !WINDOW_RIGHTMOST_P (w) | |
b0228ace GM |
591 | && (abs (*x - right_x - flags_area_width) < ux / 2)) |
592 | { | |
593 | part = ON_VERTICAL_BORDER; | |
594 | } | |
595 | else if (*x < left_x || *x > right_x) | |
447e9da0 GM |
596 | { |
597 | /* Other lines than the mode line don't include flags areas and | |
598 | scroll bars on the left. */ | |
fbad6f9a | 599 | |
447e9da0 GM |
600 | /* Convert X and Y to window-relative pixel coordinates. */ |
601 | *x -= left_x; | |
602 | *y -= top_y; | |
b0228ace GM |
603 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
604 | } | |
605 | else | |
606 | { | |
607 | *x -= left_x; | |
608 | *y -= top_y; | |
609 | part = ON_TEXT; | |
447e9da0 | 610 | } |
fbad6f9a | 611 | } |
447e9da0 GM |
612 | else |
613 | { | |
614 | /* Need to say "*x > right_x" rather than >=, since on character | |
615 | terminals, the vertical line's x coordinate is right_x. */ | |
616 | if (*x < left_x || *x > right_x) | |
617 | { | |
618 | /* Other lines than the mode line don't include flags areas and | |
619 | scroll bars on the left. */ | |
620 | ||
621 | /* Convert X and Y to window-relative pixel coordinates. */ | |
622 | *x -= left_x; | |
623 | *y -= top_y; | |
b0228ace | 624 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
447e9da0 | 625 | } |
447e9da0 | 626 | /* Here, too, "*x > right_x" is because of character terminals. */ |
b0228ace GM |
627 | else if (!w->pseudo_window_p |
628 | && !WINDOW_RIGHTMOST_P (w) | |
629 | && *x > right_x - ux) | |
630 | { | |
631 | /* On the border on the right side of the window? Assume that | |
632 | this area begins at RIGHT_X minus a canonical char width. */ | |
633 | part = ON_VERTICAL_BORDER; | |
634 | } | |
635 | else | |
636 | { | |
637 | /* Convert X and Y to window-relative pixel coordinates. */ | |
638 | *x -= left_x; | |
639 | *y -= top_y; | |
640 | part = ON_TEXT; | |
641 | } | |
447e9da0 | 642 | } |
b0228ace GM |
643 | |
644 | return part; | |
d5783c40 JB |
645 | } |
646 | ||
b0228ace | 647 | |
d5783c40 JB |
648 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
649 | Scoordinates_in_window_p, 2, 2, 0, | |
650 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 651 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 652 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 653 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 654 | frame.\n\ |
d5783c40 JB |
655 | If COORDINATES are in the text portion of WINDOW,\n\ |
656 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 657 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
045dee35 | 658 | If they are in the top mode line of WINDOW, `header-line' is returned.\n\ |
fbad6f9a GM |
659 | If they are in the bitmap-area to the left of the window,\n\ |
660 | `left-bitmap-area' is returned, if they are in the area on the right of\n\ | |
661 | the window, `right-bitmap-area' is returned.\n\ | |
d5783c40 | 662 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 663 | `vertical-line' is returned.") |
d5783c40 JB |
664 | (coordinates, window) |
665 | register Lisp_Object coordinates, window; | |
666 | { | |
5500c422 GM |
667 | struct window *w; |
668 | struct frame *f; | |
d5783c40 | 669 | int x, y; |
5500c422 | 670 | Lisp_Object lx, ly; |
d5783c40 | 671 | |
605be8af | 672 | CHECK_LIVE_WINDOW (window, 0); |
5500c422 GM |
673 | w = XWINDOW (window); |
674 | f = XFRAME (w->frame); | |
d5783c40 | 675 | CHECK_CONS (coordinates, 1); |
5500c422 GM |
676 | lx = Fcar (coordinates); |
677 | ly = Fcdr (coordinates); | |
678 | CHECK_NUMBER_OR_FLOAT (lx, 1); | |
679 | CHECK_NUMBER_OR_FLOAT (ly, 1); | |
680 | x = PIXEL_X_FROM_CANON_X (f, lx); | |
681 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
682 | ||
683 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 JB |
684 | { |
685 | case 0: /* NOT in window at all. */ | |
686 | return Qnil; | |
687 | ||
688 | case 1: /* In text part of window. */ | |
5500c422 GM |
689 | /* X and Y are now window relative pixel coordinates. |
690 | Convert them to canonical char units before returning | |
691 | them. */ | |
692 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), | |
693 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 JB |
694 | |
695 | case 2: /* In mode line of window. */ | |
696 | return Qmode_line; | |
37962e60 | 697 | |
d5783c40 | 698 | case 3: /* On right border of window. */ |
e5d77022 | 699 | return Qvertical_line; |
d5783c40 | 700 | |
5500c422 | 701 | case 4: |
045dee35 | 702 | return Qheader_line; |
5500c422 | 703 | |
fbad6f9a GM |
704 | case 5: |
705 | return Qleft_bitmap_area; | |
706 | ||
707 | case 6: | |
708 | return Qright_bitmap_area; | |
709 | ||
d5783c40 JB |
710 | default: |
711 | abort (); | |
712 | } | |
713 | } | |
714 | ||
67492200 GM |
715 | |
716 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
717 | Check if window W contains coordinates specified by USER_DATA which |
718 | is actually a pointer to a struct check_window_data CW. | |
719 | ||
720 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
721 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 722 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
723 | zero from this function to stop iterating over windows. */ |
724 | ||
725 | struct check_window_data | |
726 | { | |
727 | Lisp_Object *window; | |
728 | int *x, *y, *part; | |
729 | }; | |
67492200 GM |
730 | |
731 | static int | |
f95464e4 | 732 | check_window_containing (w, user_data) |
67492200 | 733 | struct window *w; |
f95464e4 | 734 | void *user_data; |
67492200 | 735 | { |
f95464e4 | 736 | struct check_window_data *cw = (struct check_window_data *) user_data; |
67492200 GM |
737 | int found; |
738 | ||
f95464e4 | 739 | found = coordinates_in_window (w, cw->x, cw->y); |
67492200 GM |
740 | if (found) |
741 | { | |
f95464e4 GM |
742 | *cw->part = found - 1; |
743 | XSETWINDOW (*cw->window, w); | |
67492200 GM |
744 | } |
745 | ||
746 | return !found; | |
747 | } | |
748 | ||
749 | ||
5500c422 GM |
750 | /* Find the window containing frame-relative pixel position X/Y and |
751 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
752 | set *PART to 1; if it is on the separating line between the window | |
753 | and its right sibling, set it to 2; otherwise set it to 0. If | |
754 | there is no window under X, Y return nil and leave *PART | |
67492200 GM |
755 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
756 | ||
757 | This function was previously implemented with a loop cycling over | |
758 | windows with Fnext_window, and starting with the frame's selected | |
759 | window. It turned out that this doesn't work with an | |
760 | implementation of next_window using Vwindow_list, because | |
761 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
762 | tree of F when this function is called asynchronously from | |
763 | note_mouse_highlight. The original loop didn't terminate in this | |
764 | case. */ | |
5500c422 | 765 | |
7ab12479 | 766 | Lisp_Object |
67492200 GM |
767 | window_from_coordinates (f, x, y, part, tool_bar_p) |
768 | struct frame *f; | |
7ab12479 | 769 | int x, y; |
d5783c40 | 770 | int *part; |
9ea173e8 | 771 | int tool_bar_p; |
7ab12479 | 772 | { |
67492200 | 773 | Lisp_Object window; |
f95464e4 | 774 | struct check_window_data cw; |
5500c422 | 775 | |
67492200 | 776 | window = Qnil; |
f95464e4 GM |
777 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
778 | foreach_window (f, check_window_containing, &cw); | |
67492200 GM |
779 | |
780 | /* If not found above, see if it's in the tool bar window, if a tool | |
781 | bar exists. */ | |
782 | if (NILP (window) | |
783 | && tool_bar_p | |
784 | && WINDOWP (f->tool_bar_window) | |
785 | && XINT (XWINDOW (f->tool_bar_window)->height) > 0 | |
786 | && coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y)) | |
5500c422 GM |
787 | { |
788 | *part = 0; | |
67492200 | 789 | window = f->tool_bar_window; |
5500c422 | 790 | } |
37962e60 | 791 | |
67492200 | 792 | return window; |
7ab12479 JB |
793 | } |
794 | ||
ab17c3f2 | 795 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 796 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
797 | If omitted, FRAME defaults to the currently selected frame.\n\ |
798 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 799 | column 0.") |
b0c33a94 RS |
800 | (x, y, frame) |
801 | Lisp_Object x, y, frame; | |
7ab12479 JB |
802 | { |
803 | int part; | |
5500c422 | 804 | struct frame *f; |
7ab12479 | 805 | |
44fa5b1e | 806 | if (NILP (frame)) |
1ae1a37d GM |
807 | frame = selected_frame; |
808 | CHECK_LIVE_FRAME (frame, 2); | |
5500c422 | 809 | f = XFRAME (frame); |
7ab12479 | 810 | |
5500c422 GM |
811 | /* Check that arguments are integers or floats. */ |
812 | CHECK_NUMBER_OR_FLOAT (x, 0); | |
813 | CHECK_NUMBER_OR_FLOAT (y, 1); | |
814 | ||
815 | return window_from_coordinates (f, | |
816 | PIXEL_X_FROM_CANON_X (f, x), | |
817 | PIXEL_Y_FROM_CANON_Y (f, y), | |
818 | &part, 0); | |
7ab12479 JB |
819 | } |
820 | ||
821 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
822 | "Return current value of point in WINDOW.\n\ | |
823 | For a nonselected window, this is the value point would have\n\ | |
824 | if that window were selected.\n\ | |
825 | \n\ | |
826 | Note that, when WINDOW is the selected window and its buffer\n\ | |
827 | is also currently selected, the value returned is the same as (point).\n\ | |
828 | It would be more strictly correct to return the `top-level' value\n\ | |
829 | of point, outside of any save-excursion forms.\n\ | |
830 | But that is hard to define.") | |
831 | (window) | |
832 | Lisp_Object window; | |
833 | { | |
834 | register struct window *w = decode_window (window); | |
835 | ||
836 | if (w == XWINDOW (selected_window) | |
837 | && current_buffer == XBUFFER (w->buffer)) | |
838 | return Fpoint (); | |
839 | return Fmarker_position (w->pointm); | |
840 | } | |
841 | ||
842 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
843 | "Return position at which display currently starts in WINDOW.\n\ |
844 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
845 | (window) |
846 | Lisp_Object window; | |
847 | { | |
848 | return Fmarker_position (decode_window (window)->start); | |
849 | } | |
850 | ||
8646118f RS |
851 | /* This is text temporarily removed from the doc string below. |
852 | ||
7250968e RS |
853 | This function returns nil if the position is not currently known.\n\ |
854 | That happens when redisplay is preempted and doesn't finish.\n\ | |
855 | If in that case you want to compute where the end of the window would\n\ | |
856 | have been if redisplay had finished, do this:\n\ | |
857 | (save-excursion\n\ | |
858 | (goto-char (window-start window))\n\ | |
859 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
860 | (point))") */ |
861 | ||
478292ed | 862 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
8646118f RS |
863 | "Return position at which display currently ends in WINDOW.\n\ |
864 | This is updated by redisplay, when it runs to completion.\n\ | |
865 | Simply changing the buffer text or setting `window-start'\n\ | |
478292ed RS |
866 | does not update this value.\n\ |
867 | If UP-TO-DATE is non-nil, compute the up-to-date position\n\ | |
868 | if it isn't already recorded.") | |
869 | (window, update) | |
870 | Lisp_Object window, update; | |
7ab12479 JB |
871 | { |
872 | Lisp_Object value; | |
873 | struct window *w = decode_window (window); | |
5a41ab94 RS |
874 | Lisp_Object buf; |
875 | ||
876 | buf = w->buffer; | |
877 | CHECK_BUFFER (buf, 0); | |
878 | ||
8646118f | 879 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
880 | /* If we don't know the end position, return nil. |
881 | The user can compute it with vertical-motion if he wants to. | |
882 | It would be nicer to do it automatically, | |
883 | but that's so slow that it would probably bother people. */ | |
884 | if (NILP (w->window_end_valid)) | |
885 | return Qnil; | |
8646118f | 886 | #endif |
7250968e | 887 | |
478292ed RS |
888 | if (! NILP (update) |
889 | && ! (! NILP (w->window_end_valid) | |
890 | && XFASTINT (w->last_modified) >= MODIFF)) | |
891 | { | |
cbc099e5 GM |
892 | struct text_pos startp; |
893 | struct it it; | |
2d6d9df0 GM |
894 | |
895 | /* In case W->start is out of the range, use something | |
896 | reasonable. This situation occured when loading a file with | |
897 | `-l' containing a call to `rmail' with subsequent other | |
898 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 899 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 900 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 901 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 902 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 903 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 904 | else |
cbc099e5 GM |
905 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
906 | ||
907 | /* Cannot use Fvertical_motion because that function doesn't | |
908 | cope with variable-height lines. */ | |
909 | start_display (&it, w, startp); | |
910 | move_it_vertically (&it, window_box_height (w)); | |
911 | value = make_number (IT_CHARPOS (it)); | |
478292ed RS |
912 | } |
913 | else | |
cbc099e5 | 914 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
915 | |
916 | return value; | |
917 | } | |
918 | ||
919 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
920 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
921 | (window, pos) | |
922 | Lisp_Object window, pos; | |
923 | { | |
924 | register struct window *w = decode_window (window); | |
925 | ||
926 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
e90c4fe6 RS |
927 | if (w == XWINDOW (selected_window) |
928 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
929 | Fgoto_char (pos); |
930 | else | |
931 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 932 | |
0685cb3c GM |
933 | /* We have to make sure that redisplay updates the window to show |
934 | the new value of point. */ | |
935 | if (!EQ (window, selected_window)) | |
799417bd | 936 | ++windows_or_buffers_changed; |
ce7fae7d | 937 | |
7ab12479 JB |
938 | return pos; |
939 | } | |
940 | ||
941 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
942 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
943 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
944 | from overriding motion of point in order to display at this exact start.") | |
945 | (window, pos, noforce) | |
946 | Lisp_Object window, pos, noforce; | |
947 | { | |
948 | register struct window *w = decode_window (window); | |
949 | ||
950 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
951 | set_marker_restricted (w->start, pos, w->buffer); | |
952 | /* this is not right, but much easier than doing what is right. */ | |
953 | w->start_at_line_beg = Qnil; | |
265a9e55 | 954 | if (NILP (noforce)) |
7ab12479 JB |
955 | w->force_start = Qt; |
956 | w->update_mode_line = Qt; | |
d834a2e9 | 957 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 958 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
959 | if (!EQ (window, selected_window)) |
960 | windows_or_buffers_changed++; | |
ce7fae7d | 961 | |
7ab12479 JB |
962 | return pos; |
963 | } | |
964 | ||
965 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
966 | 1, 1, 0, | |
967 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 968 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
969 | (window) |
970 | Lisp_Object window; | |
971 | { | |
972 | return decode_window (window)->dedicated; | |
973 | } | |
974 | ||
d207b766 RS |
975 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
976 | Sset_window_dedicated_p, 2, 2, 0, | |
977 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
978 | If it is dedicated, Emacs will not automatically change\n\ | |
979 | which buffer appears in it.\n\ | |
980 | The second argument is the new value for the dedication flag;\n\ | |
981 | non-nil means yes.") | |
7ab12479 JB |
982 | (window, arg) |
983 | Lisp_Object window, arg; | |
984 | { | |
985 | register struct window *w = decode_window (window); | |
986 | ||
265a9e55 | 987 | if (NILP (arg)) |
7ab12479 JB |
988 | w->dedicated = Qnil; |
989 | else | |
d207b766 | 990 | w->dedicated = Qt; |
7ab12479 JB |
991 | |
992 | return w->dedicated; | |
993 | } | |
994 | ||
995 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
996 | 0, 1, 0, | |
997 | "Return the display-table that WINDOW is using.") | |
998 | (window) | |
999 | Lisp_Object window; | |
1000 | { | |
1001 | return decode_window (window)->display_table; | |
1002 | } | |
1003 | ||
5500c422 GM |
1004 | /* Get the display table for use on window W. This is either W's |
1005 | display table or W's buffer's display table. Ignore the specified | |
1006 | tables if they are not valid; if no valid table is specified, | |
1007 | return 0. */ | |
7ab12479 | 1008 | |
319315f1 | 1009 | struct Lisp_Char_Table * |
7ab12479 JB |
1010 | window_display_table (w) |
1011 | struct window *w; | |
1012 | { | |
c756cdbe GM |
1013 | struct Lisp_Char_Table *dp = NULL; |
1014 | ||
1015 | if (DISP_TABLE_P (w->display_table)) | |
1016 | dp = XCHAR_TABLE (w->display_table); | |
1017 | else if (BUFFERP (w->buffer)) | |
1018 | { | |
1019 | struct buffer *b = XBUFFER (w->buffer); | |
1020 | ||
1021 | if (DISP_TABLE_P (b->display_table)) | |
1022 | dp = XCHAR_TABLE (b->display_table); | |
1023 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1024 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1025 | } | |
171d003c | 1026 | |
c756cdbe | 1027 | return dp; |
7ab12479 JB |
1028 | } |
1029 | ||
3a2712f9 | 1030 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
1031 | "Set WINDOW's display-table to TABLE.") |
1032 | (window, table) | |
1033 | register Lisp_Object window, table; | |
1034 | { | |
1035 | register struct window *w; | |
7ab12479 JB |
1036 | |
1037 | w = decode_window (window); | |
1038 | w->display_table = table; | |
1039 | return table; | |
1040 | } | |
1041 | \f | |
1042 | /* Record info on buffer window w is displaying | |
1043 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1044 | static void |
7ab12479 JB |
1045 | unshow_buffer (w) |
1046 | register struct window *w; | |
1047 | { | |
12cae7c0 | 1048 | Lisp_Object buf; |
b73ea88e | 1049 | struct buffer *b; |
7ab12479 | 1050 | |
12cae7c0 | 1051 | buf = w->buffer; |
b73ea88e RS |
1052 | b = XBUFFER (buf); |
1053 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1054 | abort (); |
1055 | ||
573f41ab | 1056 | #if 0 |
7ab12479 JB |
1057 | if (w == XWINDOW (selected_window) |
1058 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1059 | /* Do this except when the selected window's buffer | |
1060 | is being removed from some other window. */ | |
573f41ab RS |
1061 | #endif |
1062 | /* last_window_start records the start position that this buffer | |
1063 | had in the last window to be disconnected from it. | |
1064 | Now that this statement is unconditional, | |
1065 | it is possible for the buffer to be displayed in the | |
1066 | selected window, while last_window_start reflects another | |
1067 | window which was recently showing the same buffer. | |
1068 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1069 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1070 | |
1071 | /* Point in the selected window's buffer | |
1072 | is actually stored in that buffer, and the window's pointm isn't used. | |
1073 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1074 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1075 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1076 | && !(WINDOWP (b->last_selected_window) |
1077 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1078 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1079 | temp_set_point_both (b, |
1080 | clip_to_bounds (BUF_BEGV (b), | |
1081 | XMARKER (w->pointm)->charpos, | |
1082 | BUF_ZV (b)), | |
1083 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1084 | marker_byte_position (w->pointm), | |
1085 | BUF_ZV_BYTE (b))); | |
719eaeb1 | 1086 | |
8801a864 KR |
1087 | if (WINDOWP (b->last_selected_window) |
1088 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1089 | b->last_selected_window = Qnil; |
7ab12479 JB |
1090 | } |
1091 | ||
1092 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1093 | static void |
7ab12479 JB |
1094 | replace_window (old, replacement) |
1095 | Lisp_Object old, replacement; | |
1096 | { | |
1097 | register Lisp_Object tem; | |
1098 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1099 | ||
44fa5b1e JB |
1100 | /* If OLD is its frame's root_window, then replacement is the new |
1101 | root_window for that frame. */ | |
7ab12479 | 1102 | |
7f4161e0 | 1103 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1104 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
1105 | |
1106 | p->left = o->left; | |
1107 | p->top = o->top; | |
1108 | p->width = o->width; | |
1109 | p->height = o->height; | |
5500c422 GM |
1110 | p->desired_matrix = p->current_matrix = 0; |
1111 | p->vscroll = 0; | |
1112 | bzero (&p->cursor, sizeof (p->cursor)); | |
1113 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1114 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1115 | p->phys_cursor_type = -1; | |
1116 | p->must_be_updated_p = 0; | |
1117 | p->pseudo_window_p = 0; | |
1118 | XSETFASTINT (p->window_end_vpos, 0); | |
1119 | XSETFASTINT (p->window_end_pos, 0); | |
1120 | p->window_end_valid = Qnil; | |
7bbb5782 | 1121 | p->frozen_window_start_p = 0; |
f984d4fc | 1122 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
1123 | |
1124 | p->next = tem = o->next; | |
265a9e55 | 1125 | if (!NILP (tem)) |
7ab12479 JB |
1126 | XWINDOW (tem)->prev = replacement; |
1127 | ||
1128 | p->prev = tem = o->prev; | |
265a9e55 | 1129 | if (!NILP (tem)) |
7ab12479 JB |
1130 | XWINDOW (tem)->next = replacement; |
1131 | ||
1132 | p->parent = tem = o->parent; | |
265a9e55 | 1133 | if (!NILP (tem)) |
7ab12479 JB |
1134 | { |
1135 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1136 | XWINDOW (tem)->vchild = replacement; | |
1137 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1138 | XWINDOW (tem)->hchild = replacement; | |
1139 | } | |
1140 | ||
1141 | /*** Here, if replacement is a vertical combination | |
1142 | and so is its new parent, we should make replacement's | |
1143 | children be children of that parent instead. ***/ | |
1144 | } | |
1145 | ||
1146 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
1147 | "Remove WINDOW from the display. Default is selected window.") | |
1148 | (window) | |
1149 | register Lisp_Object window; | |
543f5fb1 RS |
1150 | { |
1151 | delete_window (window); | |
1152 | ||
1153 | if (! NILP (Vwindow_configuration_change_hook) | |
1154 | && ! NILP (Vrun_hooks)) | |
1155 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1156 | ||
1157 | return Qnil; | |
1158 | } | |
1159 | ||
5e14b1fc | 1160 | void |
543f5fb1 RS |
1161 | delete_window (window) |
1162 | register Lisp_Object window; | |
7ab12479 JB |
1163 | { |
1164 | register Lisp_Object tem, parent, sib; | |
1165 | register struct window *p; | |
1166 | register struct window *par; | |
951f9df5 | 1167 | struct frame *f; |
7ab12479 | 1168 | |
605be8af JB |
1169 | /* Because this function is called by other C code on non-leaf |
1170 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1171 | so we can't decode_window here. */ | |
265a9e55 | 1172 | if (NILP (window)) |
7ab12479 JB |
1173 | window = selected_window; |
1174 | else | |
1175 | CHECK_WINDOW (window, 0); | |
7ab12479 | 1176 | p = XWINDOW (window); |
605be8af JB |
1177 | |
1178 | /* It's okay to delete an already-deleted window. */ | |
1179 | if (NILP (p->buffer) | |
1180 | && NILP (p->hchild) | |
1181 | && NILP (p->vchild)) | |
296b535c | 1182 | return; |
605be8af | 1183 | |
7ab12479 | 1184 | parent = p->parent; |
265a9e55 | 1185 | if (NILP (parent)) |
7ab12479 JB |
1186 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1187 | par = XWINDOW (parent); | |
1188 | ||
1189 | windows_or_buffers_changed++; | |
67492200 | 1190 | Vwindow_list = Qnil; |
951f9df5 GM |
1191 | f = XFRAME (WINDOW_FRAME (p)); |
1192 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1193 | |
605be8af JB |
1194 | /* Are we trying to delete any frame's selected window? */ |
1195 | { | |
951f9df5 | 1196 | Lisp_Object pwindow; |
605be8af | 1197 | |
0def0403 RS |
1198 | /* See if the frame's selected window is either WINDOW |
1199 | or any subwindow of it, by finding all that window's parents | |
1200 | and comparing each one with WINDOW. */ | |
951f9df5 | 1201 | pwindow = FRAME_SELECTED_WINDOW (f); |
0def0403 RS |
1202 | |
1203 | while (!NILP (pwindow)) | |
1204 | { | |
1205 | if (EQ (window, pwindow)) | |
1206 | break; | |
1207 | pwindow = XWINDOW (pwindow)->parent; | |
1208 | } | |
1209 | ||
1210 | if (EQ (window, pwindow)) | |
605be8af | 1211 | { |
89bca612 RS |
1212 | Lisp_Object alternative; |
1213 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
1214 | |
1215 | /* If we're about to delete the selected window on the | |
1216 | selected frame, then we should use Fselect_window to select | |
1217 | the new window. On the other hand, if we're about to | |
1218 | delete the selected window on any other frame, we shouldn't do | |
1219 | anything but set the frame's selected_window slot. */ | |
1220 | if (EQ (window, selected_window)) | |
1221 | Fselect_window (alternative); | |
1222 | else | |
951f9df5 | 1223 | FRAME_SELECTED_WINDOW (f) = alternative; |
605be8af JB |
1224 | } |
1225 | } | |
7ab12479 JB |
1226 | |
1227 | tem = p->buffer; | |
1228 | /* tem is null for dummy parent windows | |
1229 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1230 | if (!NILP (tem)) |
7ab12479 JB |
1231 | { |
1232 | unshow_buffer (p); | |
1233 | unchain_marker (p->pointm); | |
1234 | unchain_marker (p->start); | |
7ab12479 JB |
1235 | } |
1236 | ||
05e71564 GM |
1237 | /* Free window glyph matrices. It is sure that they are allocated |
1238 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1239 | events and other events that access glyph matrices are not | |
1240 | processed while we are changing them. */ | |
1241 | BLOCK_INPUT; | |
951f9df5 | 1242 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1243 | |
7ab12479 | 1244 | tem = p->next; |
265a9e55 | 1245 | if (!NILP (tem)) |
7ab12479 JB |
1246 | XWINDOW (tem)->prev = p->prev; |
1247 | ||
1248 | tem = p->prev; | |
265a9e55 | 1249 | if (!NILP (tem)) |
7ab12479 JB |
1250 | XWINDOW (tem)->next = p->next; |
1251 | ||
1252 | if (EQ (window, par->hchild)) | |
1253 | par->hchild = p->next; | |
1254 | if (EQ (window, par->vchild)) | |
1255 | par->vchild = p->next; | |
1256 | ||
1257 | /* Find one of our siblings to give our space to. */ | |
1258 | sib = p->prev; | |
265a9e55 | 1259 | if (NILP (sib)) |
7ab12479 JB |
1260 | { |
1261 | /* If p gives its space to its next sibling, that sibling needs | |
1262 | to have its top/left side pulled back to where p's is. | |
1263 | set_window_{height,width} will re-position the sibling's | |
1264 | children. */ | |
1265 | sib = p->next; | |
7f4161e0 JB |
1266 | XWINDOW (sib)->top = p->top; |
1267 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1268 | } |
1269 | ||
1270 | /* Stretch that sibling. */ | |
265a9e55 | 1271 | if (!NILP (par->vchild)) |
7ab12479 JB |
1272 | set_window_height (sib, |
1273 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1274 | 1); | |
265a9e55 | 1275 | if (!NILP (par->hchild)) |
7ab12479 JB |
1276 | set_window_width (sib, |
1277 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1278 | 1); | |
1279 | ||
1280 | /* If parent now has only one child, | |
1281 | put the child into the parent's place. */ | |
7ab12479 | 1282 | tem = par->hchild; |
265a9e55 | 1283 | if (NILP (tem)) |
7ab12479 | 1284 | tem = par->vchild; |
265a9e55 | 1285 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1286 | replace_window (parent, tem); |
605be8af JB |
1287 | |
1288 | /* Since we may be deleting combination windows, we must make sure that | |
1289 | not only p but all its children have been marked as deleted. */ | |
1290 | if (! NILP (p->hchild)) | |
1291 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1292 | else if (! NILP (p->vchild)) | |
1293 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1294 | ||
1295 | /* Mark this window as deleted. */ | |
1296 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1297 | |
1298 | /* Adjust glyph matrices. */ | |
951f9df5 | 1299 | adjust_glyphs (f); |
05e71564 | 1300 | UNBLOCK_INPUT; |
7ab12479 | 1301 | } |
67492200 GM |
1302 | |
1303 | ||
7ab12479 | 1304 | \f |
67492200 GM |
1305 | /*********************************************************************** |
1306 | Window List | |
1307 | ***********************************************************************/ | |
1308 | ||
f95464e4 GM |
1309 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1310 | pointer. This is a callback function for foreach_window, used in | |
1311 | function window_list. */ | |
67492200 GM |
1312 | |
1313 | static int | |
f95464e4 | 1314 | add_window_to_list (w, user_data) |
67492200 | 1315 | struct window *w; |
f95464e4 | 1316 | void *user_data; |
67492200 | 1317 | { |
f95464e4 | 1318 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1319 | Lisp_Object window; |
1320 | XSETWINDOW (window, w); | |
212116d6 | 1321 | *list = Fcons (window, *list); |
67492200 GM |
1322 | return 1; |
1323 | } | |
1324 | ||
1325 | ||
1326 | /* Return a list of all windows, for use by next_window. If | |
1327 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1328 | list, cache it in Vwindow_list, and return that. */ | |
1329 | ||
1330 | static Lisp_Object | |
1331 | window_list () | |
1332 | { | |
1333 | if (!CONSP (Vwindow_list)) | |
1334 | { | |
1335 | Lisp_Object tail; | |
212116d6 | 1336 | |
67492200 GM |
1337 | Vwindow_list = Qnil; |
1338 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1339 | { |
1340 | Lisp_Object args[2]; | |
1341 | ||
1342 | /* We are visiting windows in canonical order, and add | |
1343 | new windows at the front of args[1], which means we | |
1344 | have to reverse this list at the end. */ | |
1345 | args[1] = Qnil; | |
1346 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1347 | args[0] = Vwindow_list; | |
1348 | args[1] = Fnreverse (args[1]); | |
1349 | Vwindow_list = Fnconc (2, args); | |
1350 | } | |
67492200 GM |
1351 | } |
1352 | ||
1353 | return Vwindow_list; | |
1354 | } | |
1355 | ||
1356 | ||
118ea242 GM |
1357 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1358 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1359 | |
118ea242 GM |
1360 | MINIBUF t means WINDOW may be minibuffer windows. |
1361 | `lambda' means WINDOW may not be a minibuffer window. | |
1362 | a window means a specific minibuffer window | |
67492200 | 1363 | |
118ea242 GM |
1364 | ALL_FRAMES t means search all frames, |
1365 | nil means search just current frame, | |
1366 | `visible' means search just visible frames, | |
1367 | 0 means search visible and iconified frames, | |
1368 | a window means search the frame that window belongs to, | |
1369 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1370 | |
1371 | static int | |
118ea242 GM |
1372 | candidate_window_p (window, owindow, minibuf, all_frames) |
1373 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1374 | { |
1375 | struct window *w = XWINDOW (window); | |
1376 | struct frame *f = XFRAME (w->frame); | |
1377 | int candidate_p = 1; | |
1378 | ||
1379 | if (!BUFFERP (w->buffer)) | |
1380 | candidate_p = 0; | |
1381 | else if (MINI_WINDOW_P (w) | |
1382 | && (EQ (minibuf, Qlambda) | |
1383 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1384 | { | |
1385 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1386 | If it is a window, consider only that one. */ | |
1387 | candidate_p = 0; | |
1388 | } | |
118ea242 GM |
1389 | else if (EQ (all_frames, Qt)) |
1390 | candidate_p = 1; | |
67492200 | 1391 | else if (NILP (all_frames)) |
118ea242 GM |
1392 | { |
1393 | xassert (WINDOWP (owindow)); | |
1394 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1395 | } | |
67492200 GM |
1396 | else if (EQ (all_frames, Qvisible)) |
1397 | { | |
1398 | FRAME_SAMPLE_VISIBILITY (f); | |
1399 | candidate_p = FRAME_VISIBLE_P (f); | |
1400 | } | |
1401 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1402 | { | |
1403 | FRAME_SAMPLE_VISIBILITY (f); | |
1404 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1405 | } | |
67492200 GM |
1406 | else if (WINDOWP (all_frames)) |
1407 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1408 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1409 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1410 | else if (FRAMEP (all_frames)) |
1411 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1412 | |
1413 | return candidate_p; | |
1414 | } | |
1415 | ||
1416 | ||
1417 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1418 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1419 | ALL_FRAMES. */ | |
1420 | ||
1421 | static void | |
1422 | decode_next_window_args (window, minibuf, all_frames) | |
1423 | Lisp_Object *window, *minibuf, *all_frames; | |
1424 | { | |
1425 | if (NILP (*window)) | |
1426 | *window = selected_window; | |
1427 | else | |
1428 | CHECK_LIVE_WINDOW (*window, 0); | |
1429 | ||
1430 | /* MINIBUF nil may or may not include minibuffers. Decide if it | |
1431 | does. */ | |
1432 | if (NILP (*minibuf)) | |
1433 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1434 | else if (!EQ (*minibuf, Qt)) | |
1435 | *minibuf = Qlambda; | |
1436 | ||
1437 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' | |
1438 | => count none of them, or a specific minibuffer window (the | |
1439 | active one) to count. */ | |
1440 | ||
1441 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1442 | if (NILP (*all_frames)) | |
1443 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1444 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1445 | : Qnil); | |
1446 | else if (EQ (*all_frames, Qvisible)) | |
1447 | ; | |
1448 | else if (XFASTINT (*all_frames) == 0) | |
1449 | ; | |
1450 | else if (FRAMEP (*all_frames)) | |
1451 | ; | |
1452 | else if (!EQ (*all_frames, Qt)) | |
1453 | *all_frames = Qnil; | |
1454 | ||
1455 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning | |
1456 | search just current frame, `visible' meaning search just visible | |
1457 | frames, 0 meaning search visible and iconified frames, or a | |
1458 | window, meaning search the frame that window belongs to, or a | |
1459 | frame, meaning consider windows on that frame, only. */ | |
1460 | } | |
1461 | ||
1462 | ||
1463 | /* Return the next or previous window of WINDOW in canonical ordering | |
1464 | of windows. NEXT_P non-zero means return the next window. See the | |
1465 | documentation string of next-window for the meaning of MINIBUF and | |
1466 | ALL_FRAMES. */ | |
1467 | ||
1468 | static Lisp_Object | |
1469 | next_window (window, minibuf, all_frames, next_p) | |
1470 | Lisp_Object window, minibuf, all_frames; | |
1471 | int next_p; | |
1472 | { | |
1473 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1474 | ||
1475 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just | |
1476 | return the first window on the frame. */ | |
1477 | if (FRAMEP (all_frames) | |
1478 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1479 | return Fframe_first_window (all_frames); | |
1480 | ||
212116d6 | 1481 | if (next_p) |
67492200 GM |
1482 | { |
1483 | Lisp_Object list; | |
1484 | ||
1485 | /* Find WINDOW in the list of all windows. */ | |
1486 | list = Fmemq (window, window_list ()); | |
1487 | ||
1488 | /* Scan forward from WINDOW to the end of the window list. */ | |
1489 | if (CONSP (list)) | |
1490 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1491 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1492 | break; |
1493 | ||
1494 | /* Scan from the start of the window list up to WINDOW. */ | |
1495 | if (!CONSP (list)) | |
1496 | for (list = Vwindow_list; | |
1497 | CONSP (list) && !EQ (XCAR (list), window); | |
1498 | list = XCDR (list)) | |
118ea242 | 1499 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1500 | break; |
1501 | ||
1502 | if (CONSP (list)) | |
1503 | window = XCAR (list); | |
1504 | } | |
1505 | else | |
1506 | { | |
1507 | Lisp_Object candidate, list; | |
1508 | ||
1509 | /* Scan through the list of windows for candidates. If there are | |
1510 | candidate windows in front of WINDOW, the last one of these | |
1511 | is the one we want. If there are candidates following WINDOW | |
1512 | in the list, again the last one of these is the one we want. */ | |
1513 | candidate = Qnil; | |
1514 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1515 | { | |
1516 | if (EQ (XCAR (list), window)) | |
1517 | { | |
1518 | if (WINDOWP (candidate)) | |
1519 | break; | |
1520 | } | |
118ea242 GM |
1521 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1522 | all_frames)) | |
67492200 GM |
1523 | candidate = XCAR (list); |
1524 | } | |
1525 | ||
1526 | if (WINDOWP (candidate)) | |
1527 | window = candidate; | |
1528 | } | |
1529 | ||
1530 | return window; | |
1531 | } | |
7ab12479 | 1532 | |
7ab12479 | 1533 | |
26f6279d JB |
1534 | /* This comment supplies the doc string for `next-window', |
1535 | for make-docfile to see. We cannot put this in the real DEFUN | |
1536 | due to limits in the Unix cpp. | |
1537 | ||
1538 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 1539 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1540 | If omitted, WINDOW defaults to the selected window.\n\ |
1541 | \n\ | |
1542 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1543 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1544 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1545 | minibuffer even if it is active.\n\ | |
1546 | \n\ | |
44fa5b1e JB |
1547 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1548 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1549 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
1550 | set of windows even when the minibuffer is on another frame. If the\n\ |
1551 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 1552 | \n\ |
44fa5b1e JB |
1553 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1554 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1555 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1556 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1557 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1558 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1559 | \n\ |
1560 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1561 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
1562 | windows, eventually ending up back at the window you started with.\n\ | |
1563 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1564 | (window, minibuf, all_frames) */ |
1565 | ||
1566 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
1567 | 0) | |
44fa5b1e | 1568 | (window, minibuf, all_frames) |
67492200 | 1569 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1570 | { |
67492200 | 1571 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1572 | } |
1573 | ||
67492200 | 1574 | |
26f6279d JB |
1575 | /* This comment supplies the doc string for `previous-window', |
1576 | for make-docfile to see. We cannot put this in the real DEFUN | |
1577 | due to limits in the Unix cpp. | |
1578 | ||
1579 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1580 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1581 | If omitted, WINDOW defaults to the selected window.\n\ |
1582 | \n\ | |
1583 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1584 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1585 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1586 | minibuffer even if it is active.\n\ | |
1587 | \n\ | |
44fa5b1e JB |
1588 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1589 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1590 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1591 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1592 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1593 | \n\ |
44fa5b1e JB |
1594 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1595 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1596 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1597 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1598 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1599 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1600 | \n\ |
1601 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1602 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1603 | windows, eventually ending up back at the window you started with.\n\ | |
1604 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1605 | (window, minibuf, all_frames) */ |
1606 | ||
1607 | ||
1608 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1609 | 0) | |
44fa5b1e | 1610 | (window, minibuf, all_frames) |
67492200 | 1611 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1612 | { |
67492200 | 1613 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1614 | } |
1615 | ||
67492200 | 1616 | |
62c07cc7 | 1617 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1618 | "Select the ARG'th different window on this frame.\n\ |
1619 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1620 | This command selects the window ARG steps away in that order.\n\ |
1621 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1622 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 | 1623 | (arg, all_frames) |
67492200 | 1624 | Lisp_Object arg, all_frames; |
7ab12479 | 1625 | { |
67492200 GM |
1626 | Lisp_Object window; |
1627 | int i; | |
7ab12479 | 1628 | |
413430c5 | 1629 | CHECK_NUMBER (arg, 0); |
67492200 GM |
1630 | window = selected_window; |
1631 | ||
1632 | for (i = XINT (arg); i > 0; --i) | |
1633 | window = Fnext_window (window, Qnil, all_frames); | |
1634 | for (; i < 0; ++i) | |
1635 | window = Fprevious_window (window, Qnil, all_frames); | |
1636 | ||
1637 | Fselect_window (window); | |
7ab12479 JB |
1638 | return Qnil; |
1639 | } | |
67492200 GM |
1640 | |
1641 | ||
1642 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
cd2904bd GM |
1643 | "Return a list of windows on FRAME, starting with WINDOW.\n\ |
1644 | FRAME nil or omitted means use the selected frame.\n\ | |
1645 | WINDOW nil or omitted means use the selected window.\n\ | |
1646 | MINIBUF t means include the minibuffer window, even if it isn't active.\n\ | |
1647 | MINIBUF nil or omitted means include the minibuffer window only\n\ | |
1648 | if it's active.\n\ | |
1649 | MINIBUF neither nil nor t means never include the minibuffer window.") | |
1650 | (frame, minibuf, window) | |
1651 | Lisp_Object frame, minibuf, window; | |
1652 | { | |
cd2904bd GM |
1653 | |
1654 | if (NILP (window)) | |
1655 | window = selected_window; | |
1656 | if (NILP (frame)) | |
1657 | frame = selected_frame; | |
1658 | ||
1659 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1660 | error ("Window is on a different frame"); | |
1661 | ||
1662 | return window_list_1 (window, minibuf, frame); | |
1663 | } | |
1664 | ||
1665 | ||
1666 | /* Return a list of windows in canonical ordering. Arguments are like | |
1667 | for `next-window'. */ | |
1668 | ||
1669 | static Lisp_Object | |
1670 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1671 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1672 | { |
1673 | Lisp_Object tail, list; | |
1674 | ||
1675 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1676 | list = Qnil; | |
1677 | ||
1678 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
118ea242 | 1679 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 GM |
1680 | list = Fcons (XCAR (tail), list); |
1681 | ||
118ea242 | 1682 | return Fnreverse (list); |
67492200 GM |
1683 | } |
1684 | ||
1685 | ||
7ab12479 JB |
1686 | \f |
1687 | /* Look at all windows, performing an operation specified by TYPE | |
1688 | with argument OBJ. | |
75d8f668 | 1689 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1690 | Qnil, look at just the selected frame; |
89bca612 | 1691 | Qvisible, look at visible frames; |
75d8f668 | 1692 | a frame, just look at windows on that frame. |
7ab12479 JB |
1693 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1694 | */ | |
1695 | ||
1696 | enum window_loop | |
1697 | { | |
1698 | WINDOW_LOOP_UNUSED, | |
1699 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1700 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1701 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1702 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1703 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1704 | UNSHOW_BUFFER, /* Arg is buffer */ |
1705 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1706 | }; |
1707 | ||
1708 | static Lisp_Object | |
44fa5b1e | 1709 | window_loop (type, obj, mini, frames) |
7ab12479 | 1710 | enum window_loop type; |
118ea242 | 1711 | Lisp_Object obj, frames; |
7ab12479 JB |
1712 | int mini; |
1713 | { | |
118ea242 GM |
1714 | Lisp_Object window, windows, best_window, frame_arg; |
1715 | struct frame *f; | |
ffdc852d | 1716 | struct gcpro gcpro1; |
118ea242 | 1717 | |
44fa5b1e JB |
1718 | /* If we're only looping through windows on a particular frame, |
1719 | frame points to that frame. If we're looping through windows | |
1720 | on all frames, frame is 0. */ | |
1721 | if (FRAMEP (frames)) | |
118ea242 | 1722 | f = XFRAME (frames); |
44fa5b1e | 1723 | else if (NILP (frames)) |
118ea242 | 1724 | f = SELECTED_FRAME (); |
7ab12479 | 1725 | else |
118ea242 GM |
1726 | f = NULL; |
1727 | ||
1728 | if (f) | |
89bca612 | 1729 | frame_arg = Qlambda; |
f812f9c6 RS |
1730 | else if (XFASTINT (frames) == 0) |
1731 | frame_arg = frames; | |
89bca612 RS |
1732 | else if (EQ (frames, Qvisible)) |
1733 | frame_arg = frames; | |
118ea242 GM |
1734 | else |
1735 | frame_arg = Qt; | |
7ab12479 | 1736 | |
89bca612 RS |
1737 | /* frame_arg is Qlambda to stick to one frame, |
1738 | Qvisible to consider all visible frames, | |
1739 | or Qt otherwise. */ | |
1740 | ||
7ab12479 | 1741 | /* Pick a window to start with. */ |
017b2bad | 1742 | if (WINDOWP (obj)) |
118ea242 GM |
1743 | window = obj; |
1744 | else if (f) | |
1745 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1746 | else |
118ea242 | 1747 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 JB |
1748 | |
1749 | /* Figure out the last window we're going to mess with. Since | |
1750 | Fnext_window, given the same options, is guaranteed to go in a | |
1751 | ring, we can just use Fprevious_window to find the last one. | |
1752 | ||
1753 | We can't just wait until we hit the first window again, because | |
1754 | it might be deleted. */ | |
1755 | ||
cd2904bd | 1756 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1757 | GCPRO1 (windows); |
7ab12479 | 1758 | best_window = Qnil; |
118ea242 GM |
1759 | |
1760 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1761 | { |
118ea242 GM |
1762 | struct window *w; |
1763 | ||
1764 | window = XCAR (windows); | |
1765 | w = XWINDOW (window); | |
1766 | ||
1767 | /* Note that we do not pay attention here to whether the frame | |
1768 | is visible, since Fwindow_list skips non-visible frames if | |
1769 | that is desired, under the control of frame_arg. */ | |
1770 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1771 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1772 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1773 | || (mini && minibuf_level > 0)) |
1774 | switch (type) | |
1775 | { | |
1776 | case GET_BUFFER_WINDOW: | |
118ea242 | 1777 | if (EQ (w->buffer, obj) |
5c204627 RS |
1778 | /* Don't find any minibuffer window |
1779 | except the one that is currently in use. */ | |
118ea242 GM |
1780 | && (MINI_WINDOW_P (w) |
1781 | ? EQ (window, minibuf_window) | |
1782 | : 1)) | |
1783 | { | |
1784 | UNGCPRO; | |
1785 | return window; | |
1786 | } | |
7ab12479 JB |
1787 | break; |
1788 | ||
1789 | case GET_LRU_WINDOW: | |
1790 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1791 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1792 | break; |
7ab12479 | 1793 | /* Ignore dedicated windows and minibuffers. */ |
118ea242 | 1794 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
7ab12479 | 1795 | break; |
265a9e55 | 1796 | if (NILP (best_window) |
7ab12479 | 1797 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1798 | > XFASTINT (w->use_time))) |
1799 | best_window = window; | |
7ab12479 JB |
1800 | break; |
1801 | ||
1802 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1803 | if (!EQ (window, obj)) |
1804 | Fdelete_window (window); | |
7ab12479 JB |
1805 | break; |
1806 | ||
1807 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1808 | if (EQ (w->buffer, obj)) |
7ab12479 | 1809 | { |
118ea242 | 1810 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1811 | |
1812 | /* If this window is dedicated, and in a frame of its own, | |
1813 | kill the frame. */ | |
118ea242 GM |
1814 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1815 | && !NILP (w->dedicated) | |
3548e138 | 1816 | && other_visible_frames (f)) |
7ab12479 | 1817 | { |
3548e138 RS |
1818 | /* Skip the other windows on this frame. |
1819 | There might be one, the minibuffer! */ | |
118ea242 GM |
1820 | while (CONSP (XCDR (windows)) |
1821 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1822 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1823 | windows = XCDR (windows); | |
1824 | ||
3548e138 | 1825 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1826 | Fdelete_frame (w->frame, Qnil); |
1827 | } | |
1828 | else if (NILP (w->parent)) | |
1829 | { | |
1830 | /* If we're deleting the buffer displayed in the | |
1831 | only window on the frame, find a new buffer to | |
1832 | display there. */ | |
1833 | Lisp_Object buffer; | |
1834 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1835 | if (NILP (buffer)) | |
1836 | buffer = Fget_buffer_create (build_string ("*scratch*")); | |
1837 | Fset_window_buffer (window, buffer); | |
1838 | if (EQ (window, selected_window)) | |
1839 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1840 | } |
1841 | else | |
118ea242 | 1842 | Fdelete_window (window); |
7ab12479 JB |
1843 | } |
1844 | break; | |
1845 | ||
1846 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1847 | { |
118ea242 | 1848 | /* Ignore dedicated windows and minibuffers. */ |
c930dfab | 1849 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
118ea242 GM |
1850 | break; |
1851 | ||
c930dfab | 1852 | if (NILP (best_window)) |
118ea242 | 1853 | best_window = window; |
c930dfab GM |
1854 | else |
1855 | { | |
1856 | struct window *b = XWINDOW (best_window); | |
1857 | if (XFASTINT (w->height) * XFASTINT (w->width) | |
1858 | > XFASTINT (b->height) * XFASTINT (b->width)) | |
1859 | best_window = window; | |
1860 | } | |
7ab12479 JB |
1861 | } |
1862 | break; | |
1863 | ||
1864 | case UNSHOW_BUFFER: | |
118ea242 | 1865 | if (EQ (w->buffer, obj)) |
7ab12479 | 1866 | { |
118ea242 GM |
1867 | Lisp_Object buffer; |
1868 | struct frame *f = XFRAME (w->frame); | |
1869 | ||
7ab12479 | 1870 | /* Find another buffer to show in this window. */ |
118ea242 GM |
1871 | buffer = Fother_buffer (obj, Qnil, w->frame); |
1872 | if (NILP (buffer)) | |
1873 | buffer = Fget_buffer_create (build_string ("*scratch*")); | |
1874 | ||
38ab08d1 RS |
1875 | /* If this window is dedicated, and in a frame of its own, |
1876 | kill the frame. */ | |
118ea242 GM |
1877 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1878 | && !NILP (w->dedicated) | |
38ab08d1 | 1879 | && other_visible_frames (f)) |
45945a7b RS |
1880 | { |
1881 | /* Skip the other windows on this frame. | |
1882 | There might be one, the minibuffer! */ | |
118ea242 GM |
1883 | while (CONSP (XCDR (windows)) |
1884 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1885 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1886 | windows = XCDR (windows); | |
1887 | ||
45945a7b | 1888 | /* Now we can safely delete the frame. */ |
118ea242 | 1889 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1890 | } |
38ab08d1 | 1891 | else |
38ab08d1 RS |
1892 | { |
1893 | /* Otherwise show a different buffer in the window. */ | |
118ea242 GM |
1894 | w->dedicated = Qnil; |
1895 | Fset_window_buffer (window, buffer); | |
1896 | if (EQ (window, selected_window)) | |
1897 | Fset_buffer (w->buffer); | |
38ab08d1 | 1898 | } |
7ab12479 JB |
1899 | } |
1900 | break; | |
3f8ab7bd RS |
1901 | |
1902 | /* Check for a window that has a killed buffer. */ | |
1903 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1904 | if (! NILP (w->buffer) |
1905 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1906 | abort (); |
118ea242 | 1907 | break; |
6bbd7a29 GM |
1908 | |
1909 | case WINDOW_LOOP_UNUSED: | |
1910 | break; | |
7ab12479 | 1911 | } |
7ab12479 | 1912 | } |
7ab12479 | 1913 | |
118ea242 | 1914 | UNGCPRO; |
7ab12479 | 1915 | return best_window; |
37962e60 | 1916 | } |
605be8af | 1917 | |
3f8ab7bd RS |
1918 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1919 | ||
233a4a2c | 1920 | void |
3f8ab7bd RS |
1921 | check_all_windows () |
1922 | { | |
1923 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1924 | } | |
1925 | ||
7ab12479 JB |
1926 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1927 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1928 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1929 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1930 | If FRAME is t, search all frames.\n\ |
1931 | If FRAME is nil, search only the selected frame.\n\ | |
1932 | If FRAME is a frame, search only that frame.") | |
1933 | (frame) | |
1934 | Lisp_Object frame; | |
7ab12479 JB |
1935 | { |
1936 | register Lisp_Object w; | |
1937 | /* First try for a window that is full-width */ | |
89bca612 | 1938 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1939 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1940 | return w; |
1941 | /* If none of them, try the rest */ | |
89bca612 | 1942 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1943 | } |
1944 | ||
1945 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1946 | "Return the largest window in area.\n\ | |
89bca612 | 1947 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1948 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1949 | If FRAME is t, search all frames.\n\ |
1950 | If FRAME is nil, search only the selected frame.\n\ | |
1951 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1952 | (frame) |
1953 | Lisp_Object frame; | |
7ab12479 JB |
1954 | { |
1955 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1956 | frame); |
7ab12479 JB |
1957 | } |
1958 | ||
1959 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1960 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1961 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1962 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1963 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1964 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1965 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1966 | (buffer, frame) |
1967 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1968 | { |
1969 | buffer = Fget_buffer (buffer); | |
017b2bad | 1970 | if (BUFFERP (buffer)) |
44fa5b1e | 1971 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1972 | else |
1973 | return Qnil; | |
1974 | } | |
1975 | ||
1976 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1977 | 0, 1, "", | |
44fa5b1e | 1978 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1979 | Only the frame WINDOW is on is affected.\n\ |
1980 | This function tries to reduce display jumps\n\ | |
1981 | by keeping the text previously visible in WINDOW\n\ | |
1982 | in the same place on the frame. Doing this depends on\n\ | |
1983 | the value of (window-start WINDOW), so if calling this function\n\ | |
1984 | in a program gives strange scrolling, make sure the window-start\n\ | |
1985 | value is reasonable when this function is called.") | |
7ab12479 JB |
1986 | (window) |
1987 | Lisp_Object window; | |
1988 | { | |
1989 | struct window *w; | |
00d3d838 | 1990 | int startpos; |
7ab12479 JB |
1991 | int top; |
1992 | ||
265a9e55 | 1993 | if (NILP (window)) |
7ab12479 JB |
1994 | window = selected_window; |
1995 | else | |
605be8af | 1996 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1997 | |
1998 | w = XWINDOW (window); | |
a2b38b3c | 1999 | |
00d3d838 | 2000 | startpos = marker_position (w->start); |
5500c422 | 2001 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2002 | |
a2b38b3c RS |
2003 | if (MINI_WINDOW_P (w) && top > 0) |
2004 | error ("Can't expand minibuffer to full frame"); | |
2005 | ||
70728a80 | 2006 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2007 | |
00d3d838 KH |
2008 | /* Try to minimize scrolling, by setting the window start to the point |
2009 | will cause the text at the old window start to be at the same place | |
2010 | on the frame. But don't try to do this if the window start is | |
2011 | outside the visible portion (as might happen when the display is | |
2012 | not current, due to typeahead). */ | |
2013 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
2014 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
2015 | { | |
2016 | struct position pos; | |
2017 | struct buffer *obuf = current_buffer; | |
2018 | ||
2019 | Fset_buffer (w->buffer); | |
2020 | /* This computation used to temporarily move point, but that can | |
2021 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2022 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2023 | |
b73ea88e RS |
2024 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
2025 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
2026 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2027 | : Qnil); |
80622eec RS |
2028 | /* We need to do this, so that the window-scroll-functions |
2029 | get called. */ | |
4d047f50 | 2030 | w->optional_new_start = Qt; |
00d3d838 KH |
2031 | |
2032 | set_buffer_internal (obuf); | |
2033 | } | |
5500c422 | 2034 | |
7ab12479 JB |
2035 | return Qnil; |
2036 | } | |
2037 | ||
2038 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 2039 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
2040 | "Delete all windows showing BUFFER.\n\ |
2041 | Optional second argument FRAME controls which frames are affected.\n\ | |
c520265e RS |
2042 | If optional argument FRAME is `visible', search all visible frames.\n\ |
2043 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2044 | If FRAME is nil, search all frames.\n\ | |
2045 | If FRAME is t, search only the selected frame.\n\ | |
2046 | If FRAME is a frame, search only that frame.") | |
26f6279d JB |
2047 | (buffer, frame) |
2048 | Lisp_Object buffer, frame; | |
7ab12479 | 2049 | { |
26f6279d JB |
2050 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2051 | expects. */ | |
c520265e RS |
2052 | if (NILP (frame)) |
2053 | frame = Qt; | |
2054 | else if (EQ (frame, Qt)) | |
2055 | frame = Qnil; | |
26f6279d | 2056 | |
265a9e55 | 2057 | if (!NILP (buffer)) |
7ab12479 JB |
2058 | { |
2059 | buffer = Fget_buffer (buffer); | |
2060 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 2061 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2062 | } |
5500c422 | 2063 | |
7ab12479 JB |
2064 | return Qnil; |
2065 | } | |
2066 | ||
2067 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
2068 | Sreplace_buffer_in_windows, | |
2069 | 1, 1, "bReplace buffer in windows: ", | |
2070 | "Replace BUFFER with some other buffer in all windows showing it.") | |
2071 | (buffer) | |
2072 | Lisp_Object buffer; | |
2073 | { | |
265a9e55 | 2074 | if (!NILP (buffer)) |
7ab12479 JB |
2075 | { |
2076 | buffer = Fget_buffer (buffer); | |
2077 | CHECK_BUFFER (buffer, 0); | |
2078 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2079 | } | |
2080 | return Qnil; | |
2081 | } | |
ff58478b RS |
2082 | |
2083 | /* Replace BUFFER with some other buffer in all windows | |
2084 | of all frames, even those on other keyboards. */ | |
2085 | ||
2086 | void | |
2087 | replace_buffer_in_all_windows (buffer) | |
2088 | Lisp_Object buffer; | |
2089 | { | |
27abb84f | 2090 | #ifdef MULTI_KBOARD |
ff58478b RS |
2091 | Lisp_Object tail, frame; |
2092 | ||
ff58478b RS |
2093 | /* A single call to window_loop won't do the job |
2094 | because it only considers frames on the current keyboard. | |
2095 | So loop manually over frames, and handle each one. */ | |
2096 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2097 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2098 | #else |
db7f721d | 2099 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2100 | #endif |
2101 | } | |
7ab12479 JB |
2102 | \f |
2103 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2104 | |
2105 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2106 | might crash Emacs. */ | |
5500c422 | 2107 | |
a481b3ea JB |
2108 | #define MIN_SAFE_WINDOW_WIDTH (2) |
2109 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
2110 | ||
2111 | /* Make sure that window_min_height and window_min_width are | |
2112 | not too small; if they are, set them to safe minima. */ | |
2113 | ||
2114 | static void | |
2115 | check_min_window_sizes () | |
2116 | { | |
2117 | /* Smaller values might permit a crash. */ | |
2118 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2119 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2120 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2121 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2122 | } | |
2123 | ||
2124 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2125 | minimum allowable size. */ | |
5500c422 | 2126 | |
605be8af | 2127 | void |
a481b3ea | 2128 | check_frame_size (frame, rows, cols) |
605be8af JB |
2129 | FRAME_PTR frame; |
2130 | int *rows, *cols; | |
a481b3ea | 2131 | { |
628df3bf | 2132 | /* For height, we have to see: |
37962e60 | 2133 | whether the frame has a minibuffer, |
628df3bf JB |
2134 | whether it wants a mode line, and |
2135 | whether it has a menu bar. */ | |
a481b3ea | 2136 | int min_height = |
79f92720 JB |
2137 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
2138 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 2139 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
2140 | |
2141 | if (FRAME_TOP_MARGIN (frame) > 0) | |
2142 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2143 | |
2144 | if (*rows < min_height) | |
2145 | *rows = min_height; | |
2146 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2147 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2148 | } | |
2149 | ||
c1636aa6 | 2150 | |
233a4a2c GM |
2151 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2152 | check if W's width can be changed, otherwise check W's height. | |
2153 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2154 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2155 | either. */ | |
c1636aa6 | 2156 | |
233a4a2c GM |
2157 | static int |
2158 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2159 | struct window *w; | |
2160 | int width_p, check_siblings_p; | |
2161 | { | |
2162 | int fixed_p; | |
2163 | struct window *c; | |
2164 | ||
2165 | if (!NILP (w->hchild)) | |
2166 | { | |
2167 | c = XWINDOW (w->hchild); | |
2168 | ||
2169 | if (width_p) | |
2170 | { | |
2171 | /* A horiz. combination is fixed-width if all of if its | |
2172 | children are. */ | |
2173 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2174 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2175 | fixed_p = c == NULL; | |
2176 | } | |
2177 | else | |
2178 | { | |
2179 | /* A horiz. combination is fixed-height if one of if its | |
2180 | children is. */ | |
2181 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2182 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2183 | fixed_p = c != NULL; | |
2184 | } | |
2185 | } | |
2186 | else if (!NILP (w->vchild)) | |
2187 | { | |
2188 | c = XWINDOW (w->vchild); | |
2189 | ||
2190 | if (width_p) | |
2191 | { | |
2192 | /* A vert. combination is fixed-width if one of if its | |
2193 | children is. */ | |
2194 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2195 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2196 | fixed_p = c != NULL; | |
2197 | } | |
2198 | else | |
2199 | { | |
2200 | /* A vert. combination is fixed-height if all of if its | |
2201 | children are. */ | |
2202 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2203 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2204 | fixed_p = c == NULL; | |
2205 | } | |
2206 | } | |
2207 | else if (BUFFERP (w->buffer)) | |
2208 | { | |
a34dfd12 GM |
2209 | if (w->height_fixed_p && !width_p) |
2210 | fixed_p = 1; | |
2211 | else | |
233a4a2c | 2212 | { |
a34dfd12 GM |
2213 | struct buffer *old = current_buffer; |
2214 | Lisp_Object val; | |
2215 | ||
2216 | current_buffer = XBUFFER (w->buffer); | |
2217 | val = find_symbol_value (Qwindow_size_fixed); | |
2218 | current_buffer = old; | |
2219 | ||
2220 | fixed_p = 0; | |
2221 | if (!EQ (val, Qunbound)) | |
2222 | { | |
2223 | fixed_p = !NILP (val); | |
2224 | ||
2225 | if (fixed_p | |
2226 | && ((EQ (val, Qheight) && width_p) | |
2227 | || (EQ (val, Qwidth) && !width_p))) | |
2228 | fixed_p = 0; | |
2229 | } | |
233a4a2c GM |
2230 | } |
2231 | ||
2232 | /* Can't tell if this one is resizable without looking at | |
2233 | siblings. If all siblings are fixed-size this one is too. */ | |
2234 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2235 | { | |
2236 | Lisp_Object child; | |
2237 | ||
2238 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2239 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2240 | break; | |
2241 | ||
2242 | if (NILP (child)) | |
2243 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2244 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2245 | break; | |
2246 | ||
2247 | if (NILP (child)) | |
2248 | fixed_p = 1; | |
2249 | } | |
2250 | } | |
2251 | else | |
2252 | fixed_p = 1; | |
2253 | ||
2254 | return fixed_p; | |
2255 | } | |
2256 | ||
2257 | ||
2258 | /* Return the minimum size of window W, not taking fixed-width windows | |
2259 | into account. WIDTH_P non-zero means return the minimum width, | |
2260 | otherwise return the minimum height. If W is a combination window, | |
2261 | compute the minimum size from the minimum sizes of W's children. */ | |
2262 | ||
2263 | static int | |
2264 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2265 | struct window *w; |
2266 | int width_p; | |
2267 | { | |
233a4a2c | 2268 | struct window *c; |
c1636aa6 GM |
2269 | int size; |
2270 | ||
233a4a2c GM |
2271 | if (!NILP (w->hchild)) |
2272 | { | |
2273 | c = XWINDOW (w->hchild); | |
2274 | size = 0; | |
2275 | ||
2276 | if (width_p) | |
2277 | { | |
2278 | /* The min width of a horizontal combination is | |
2279 | the sum of the min widths of its children. */ | |
2280 | while (c) | |
2281 | { | |
2282 | size += window_min_size_1 (c, width_p); | |
2283 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2284 | } | |
2285 | } | |
2286 | else | |
2287 | { | |
2288 | /* The min height a horizontal combination equals | |
2289 | the maximum of all min height of its children. */ | |
2290 | while (c) | |
2291 | { | |
2292 | int min_size = window_min_size_1 (c, width_p); | |
2293 | size = max (min_size, size); | |
2294 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2295 | } | |
2296 | } | |
2297 | } | |
2298 | else if (!NILP (w->vchild)) | |
2299 | { | |
2300 | c = XWINDOW (w->vchild); | |
2301 | size = 0; | |
2302 | ||
2303 | if (width_p) | |
2304 | { | |
2305 | /* The min width of a vertical combination is | |
2306 | the maximum of the min widths of its children. */ | |
2307 | while (c) | |
2308 | { | |
2309 | int min_size = window_min_size_1 (c, width_p); | |
2310 | size = max (min_size, size); | |
2311 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2312 | } | |
2313 | } | |
2314 | else | |
2315 | { | |
2316 | /* The min height of a vertical combination equals | |
2317 | the sum of the min height of its children. */ | |
2318 | while (c) | |
2319 | { | |
2320 | size += window_min_size_1 (c, width_p); | |
2321 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2322 | } | |
2323 | } | |
2324 | } | |
c1636aa6 GM |
2325 | else |
2326 | { | |
233a4a2c GM |
2327 | if (width_p) |
2328 | size = window_min_width; | |
c1636aa6 | 2329 | else |
233a4a2c GM |
2330 | { |
2331 | if (MINI_WINDOW_P (w) | |
2332 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2333 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2334 | size = 1; |
2335 | else | |
2336 | size = window_min_height; | |
2337 | } | |
c1636aa6 GM |
2338 | } |
2339 | ||
2340 | return size; | |
2341 | } | |
2342 | ||
2343 | ||
233a4a2c GM |
2344 | /* Return the minimum size of window W, taking fixed-size windows into |
2345 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2346 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2347 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2348 | unless FIXED is null. */ | |
7ab12479 | 2349 | |
233a4a2c | 2350 | static int |
f984d4fc | 2351 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2352 | struct window *w; |
f984d4fc | 2353 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2354 | { |
2355 | int size, fixed_p; | |
2356 | ||
f984d4fc GM |
2357 | if (ignore_fixed_p) |
2358 | fixed_p = 0; | |
2359 | else | |
2360 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2361 | ||
233a4a2c GM |
2362 | if (fixed) |
2363 | *fixed = fixed_p; | |
2364 | ||
2365 | if (fixed_p) | |
2366 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2367 | else | |
2368 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2369 | |
233a4a2c GM |
2370 | return size; |
2371 | } | |
2372 | ||
2373 | ||
2374 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2375 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2376 | keep their proportionate size relative to WINDOW. Propagate | |
2377 | WINDOW's top or left edge position to children. Delete windows | |
2378 | that become too small unless NODELETE_P is non-zero. */ | |
2379 | ||
2380 | static void | |
2381 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2382 | Lisp_Object window; |
233a4a2c | 2383 | int size, width_p, nodelete_p; |
7ab12479 | 2384 | { |
233a4a2c GM |
2385 | struct window *w = XWINDOW (window); |
2386 | struct window *c; | |
2387 | Lisp_Object child, *forward, *sideward; | |
2388 | int old_size, min_size; | |
7ab12479 | 2389 | |
a481b3ea | 2390 | check_min_window_sizes (); |
7ae2f10f | 2391 | size = max (0, size); |
233a4a2c | 2392 | |
b5f05b50 GM |
2393 | /* If the window has been "too small" at one point, |
2394 | don't delete it for being "too small" in the future. | |
2395 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2396 | if (width_p) |
2397 | { | |
8b6d9dc9 | 2398 | old_size = XINT (w->width); |
233a4a2c GM |
2399 | min_size = window_min_width; |
2400 | } | |
2401 | else | |
2402 | { | |
8b6d9dc9 | 2403 | old_size = XINT (w->height); |
233a4a2c GM |
2404 | min_size = window_min_height; |
2405 | } | |
2406 | ||
f18625cd | 2407 | if (old_size < min_size) |
b5f05b50 GM |
2408 | w->too_small_ok = Qt; |
2409 | ||
233a4a2c GM |
2410 | /* Maybe delete WINDOW if it's too small. */ |
2411 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2412 | { |
233a4a2c | 2413 | int min_size; |
b5f05b50 GM |
2414 | |
2415 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) | |
233a4a2c | 2416 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2417 | else |
233a4a2c | 2418 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2419 | |
233a4a2c | 2420 | if (size < min_size) |
c1636aa6 GM |
2421 | { |
2422 | delete_window (window); | |
2423 | return; | |
2424 | } | |
7ab12479 JB |
2425 | } |
2426 | ||
233a4a2c | 2427 | /* Set redisplay hints. */ |
7ae2f10f GM |
2428 | w->last_modified = make_number (0); |
2429 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2430 | windows_or_buffers_changed++; |
7ae2f10f | 2431 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2432 | |
233a4a2c GM |
2433 | if (width_p) |
2434 | { | |
2435 | sideward = &w->vchild; | |
2436 | forward = &w->hchild; | |
7ae2f10f | 2437 | w->width = make_number (size); |
233a4a2c GM |
2438 | } |
2439 | else | |
2440 | { | |
2441 | sideward = &w->hchild; | |
2442 | forward = &w->vchild; | |
7ae2f10f | 2443 | w->height = make_number (size); |
233a4a2c GM |
2444 | } |
2445 | ||
2446 | if (!NILP (*sideward)) | |
7ab12479 | 2447 | { |
233a4a2c | 2448 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2449 | { |
233a4a2c GM |
2450 | c = XWINDOW (child); |
2451 | if (width_p) | |
2452 | c->left = w->left; | |
2453 | else | |
2454 | c->top = w->top; | |
2455 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2456 | } |
2457 | } | |
233a4a2c | 2458 | else if (!NILP (*forward)) |
7ab12479 | 2459 | { |
233a4a2c GM |
2460 | int fixed_size, each, extra, n; |
2461 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2462 | int last_pos, first_pos, nchildren, total; |
233a4a2c GM |
2463 | |
2464 | /* Determine the fixed-size portion of the this window, and the | |
2465 | number of child windows. */ | |
8b6d9dc9 | 2466 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2467 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2468 | { |
8b6d9dc9 GM |
2469 | int child_size; |
2470 | ||
7ab12479 | 2471 | c = XWINDOW (child); |
8b6d9dc9 GM |
2472 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
2473 | total += child_size; | |
2474 | ||
233a4a2c GM |
2475 | if (window_fixed_size_p (c, width_p, 0)) |
2476 | { | |
8b6d9dc9 | 2477 | fixed_size += child_size; |
233a4a2c GM |
2478 | ++nfixed; |
2479 | } | |
2480 | } | |
7ab12479 | 2481 | |
233a4a2c GM |
2482 | /* If the new size is smaller than fixed_size, or if there |
2483 | aren't any resizable windows, allow resizing fixed-size | |
2484 | windows. */ | |
2485 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2486 | ||
2487 | /* Compute how many lines/columns to add to each child. The | |
2488 | value of extra takes care of rounding errors. */ | |
2489 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
8b6d9dc9 GM |
2490 | each = (size - total) / n; |
2491 | extra = (size - total) - n * each; | |
233a4a2c GM |
2492 | |
2493 | /* Compute new children heights and edge positions. */ | |
8b6d9dc9 | 2494 | first_pos = width_p ? XINT (w->left) : XINT (w->top); |
233a4a2c GM |
2495 | last_pos = first_pos; |
2496 | for (child = *forward; !NILP (child); child = c->next) | |
2497 | { | |
2498 | int new_size, old_size; | |
2499 | ||
2500 | c = XWINDOW (child); | |
2501 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2502 | new_size = old_size; | |
7ab12479 | 2503 | |
233a4a2c GM |
2504 | /* The top or left edge position of this child equals the |
2505 | bottom or right edge of its predecessor. */ | |
2506 | if (width_p) | |
2507 | c->left = make_number (last_pos); | |
2508 | else | |
2509 | c->top = make_number (last_pos); | |
7ab12479 | 2510 | |
233a4a2c GM |
2511 | /* If this child can be resized, do it. */ |
2512 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2513 | { | |
2514 | new_size = old_size + each + extra; | |
2515 | extra = 0; | |
2516 | } | |
2517 | ||
2518 | /* Set new height. Note that size_window also propagates | |
2519 | edge positions to children, so it's not a no-op if we | |
2520 | didn't change the child's size. */ | |
2521 | size_window (child, new_size, width_p, 1); | |
2522 | ||
2523 | /* Remember the bottom/right edge position of this child; it | |
2524 | will be used to set the top/left edge of the next child. */ | |
2525 | last_pos += new_size; | |
7ab12479 | 2526 | } |
233a4a2c GM |
2527 | |
2528 | /* We should have covered the parent exactly with child windows. */ | |
2529 | xassert (size == last_pos - first_pos); | |
2530 | ||
7ab12479 | 2531 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2532 | if (!nodelete_p) |
2533 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2534 | { |
233a4a2c GM |
2535 | int child_size; |
2536 | c = XWINDOW (child); | |
8b6d9dc9 | 2537 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
233a4a2c | 2538 | size_window (child, child_size, width_p, 0); |
7ab12479 JB |
2539 | } |
2540 | } | |
2541 | } | |
2542 | ||
233a4a2c GM |
2543 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2544 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2545 | that become too small in the process. (The caller should check | |
2546 | later and do so if appropriate.) */ | |
7ab12479 | 2547 | |
5e14b1fc | 2548 | void |
233a4a2c | 2549 | set_window_height (window, height, nodelete) |
7ab12479 | 2550 | Lisp_Object window; |
233a4a2c | 2551 | int height; |
7ab12479 JB |
2552 | int nodelete; |
2553 | { | |
233a4a2c GM |
2554 | size_window (window, height, 0, nodelete); |
2555 | } | |
7ab12479 | 2556 | |
7ab12479 | 2557 | |
233a4a2c GM |
2558 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2559 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2560 | that become too small in the process. (The caller should check | |
2561 | later and do so if appropriate.) */ | |
7ab12479 | 2562 | |
233a4a2c GM |
2563 | void |
2564 | set_window_width (window, width, nodelete) | |
2565 | Lisp_Object window; | |
2566 | int width; | |
2567 | int nodelete; | |
2568 | { | |
2569 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2570 | } |
233a4a2c | 2571 | |
7ab12479 | 2572 | \f |
1d8d96fa | 2573 | int window_select_count; |
7ab12479 | 2574 | |
5b03d3c0 RS |
2575 | Lisp_Object |
2576 | Fset_window_buffer_unwind (obuf) | |
2577 | Lisp_Object obuf; | |
2578 | { | |
2579 | Fset_buffer (obuf); | |
2580 | return Qnil; | |
2581 | } | |
2582 | ||
7ab12479 | 2583 | |
5500c422 GM |
2584 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2585 | means it's allowed to run hooks. See make_frame for a case where | |
2586 | it's not allowed. */ | |
7ab12479 | 2587 | |
5500c422 GM |
2588 | void |
2589 | set_window_buffer (window, buffer, run_hooks_p) | |
2590 | Lisp_Object window, buffer; | |
2591 | int run_hooks_p; | |
2592 | { | |
2593 | struct window *w = XWINDOW (window); | |
2594 | struct buffer *b = XBUFFER (buffer); | |
2595 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2596 | |
2597 | w->buffer = buffer; | |
86e48436 RS |
2598 | |
2599 | if (EQ (window, selected_window)) | |
5500c422 | 2600 | b->last_selected_window = window; |
beb4e312 RS |
2601 | |
2602 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2603 | if (INTEGERP (b->display_count)) |
2604 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2605 | b->display_time = Fcurrent_time (); | |
86e48436 | 2606 | |
d834a2e9 | 2607 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2608 | XSETFASTINT (w->window_end_vpos, 0); |
2609 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2610 | w->window_end_valid = Qnil; |
dba06815 | 2611 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 2612 | XSETFASTINT (w->min_hscroll, 0); |
5500c422 | 2613 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2614 | set_marker_restricted (w->start, |
5500c422 | 2615 | make_number (b->last_window_start), |
7ab12479 JB |
2616 | buffer); |
2617 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2618 | w->force_start = Qnil; |
d834a2e9 | 2619 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2620 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2621 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2622 | |
2623 | /* We must select BUFFER for running the window-scroll-functions. | |
2624 | If WINDOW is selected, switch permanently. | |
2625 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2626 | if (EQ (window, selected_window)) |
2627 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2628 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2629 | because that might itself be a local variable. */ | |
2630 | else if (window_initialized) | |
2631 | { | |
2632 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2633 | Fset_buffer (buffer); | |
2634 | } | |
2635 | ||
5500c422 | 2636 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2637 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2638 | |
5500c422 GM |
2639 | if (run_hooks_p) |
2640 | { | |
2641 | if (! NILP (Vwindow_scroll_functions)) | |
2642 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2643 | Fmarker_position (w->start)); | |
2644 | ||
2645 | if (! NILP (Vwindow_configuration_change_hook) | |
2646 | && ! NILP (Vrun_hooks)) | |
2647 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2648 | } | |
543f5fb1 | 2649 | |
5b03d3c0 | 2650 | unbind_to (count, Qnil); |
5500c422 | 2651 | } |
5b03d3c0 | 2652 | |
5500c422 GM |
2653 | |
2654 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
2655 | "Make WINDOW display BUFFER as its contents.\n\ | |
2656 | BUFFER can be a buffer or buffer name.") | |
2657 | (window, buffer) | |
2658 | register Lisp_Object window, buffer; | |
2659 | { | |
2660 | register Lisp_Object tem; | |
2661 | register struct window *w = decode_window (window); | |
5500c422 | 2662 | |
bed0c171 | 2663 | XSETWINDOW (window, w); |
5500c422 GM |
2664 | buffer = Fget_buffer (buffer); |
2665 | CHECK_BUFFER (buffer, 1); | |
2666 | ||
2667 | if (NILP (XBUFFER (buffer)->name)) | |
2668 | error ("Attempt to display deleted buffer"); | |
2669 | ||
2670 | tem = w->buffer; | |
2671 | if (NILP (tem)) | |
2672 | error ("Window is deleted"); | |
2673 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2674 | is first being set up. */ | |
2675 | { | |
2676 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2677 | error ("Window is dedicated to `%s'", | |
2678 | XSTRING (XBUFFER (tem)->name)->data); | |
2679 | ||
2680 | unshow_buffer (w); | |
2681 | } | |
2682 | ||
2683 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2684 | return Qnil; |
2685 | } | |
2686 | ||
2687 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
2688 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
beb4e312 RS |
2689 | If WINDOW is not already selected, also make WINDOW's buffer current.\n\ |
2690 | Note that the main editor command loop\n\ | |
2691 | selects the buffer of the selected window before each command.") | |
7ab12479 JB |
2692 | (window) |
2693 | register Lisp_Object window; | |
b7354ddf RS |
2694 | { |
2695 | return select_window_1 (window, 1); | |
2696 | } | |
2697 | \f | |
719eaeb1 GM |
2698 | /* Note that selected_window can be nil |
2699 | when this is called from Fset_window_configuration. */ | |
2700 | ||
b7354ddf RS |
2701 | static Lisp_Object |
2702 | select_window_1 (window, recordflag) | |
2703 | register Lisp_Object window; | |
2704 | int recordflag; | |
7ab12479 JB |
2705 | { |
2706 | register struct window *w; | |
719eaeb1 | 2707 | register struct window *ow; |
1ae1a37d | 2708 | struct frame *sf; |
7ab12479 | 2709 | |
605be8af | 2710 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2711 | |
2712 | w = XWINDOW (window); | |
2713 | ||
265a9e55 | 2714 | if (NILP (w->buffer)) |
7ab12479 JB |
2715 | error ("Trying to select deleted window or non-leaf window"); |
2716 | ||
d834a2e9 | 2717 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2718 | if (EQ (window, selected_window)) |
2719 | return window; | |
2720 | ||
719eaeb1 GM |
2721 | if (!NILP (selected_window)) |
2722 | { | |
2723 | ow = XWINDOW (selected_window); | |
2724 | if (! NILP (ow->buffer)) | |
2725 | set_marker_both (ow->pointm, ow->buffer, | |
2726 | BUF_PT (XBUFFER (ow->buffer)), | |
2727 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2728 | } | |
7ab12479 JB |
2729 | |
2730 | selected_window = window; | |
1ae1a37d GM |
2731 | sf = SELECTED_FRAME (); |
2732 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2733 | { |
44fa5b1e | 2734 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2735 | /* Use this rather than Fhandle_switch_frame |
2736 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2737 | move around in the state where a minibuffer in a separate | |
2738 | frame is active. */ | |
2739 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2740 | } |
2741 | else | |
1ae1a37d | 2742 | sf->selected_window = window; |
7ab12479 | 2743 | |
b7354ddf RS |
2744 | if (recordflag) |
2745 | record_buffer (w->buffer); | |
7ab12479 JB |
2746 | Fset_buffer (w->buffer); |
2747 | ||
86e48436 RS |
2748 | XBUFFER (w->buffer)->last_selected_window = window; |
2749 | ||
7ab12479 JB |
2750 | /* Go to the point recorded in the window. |
2751 | This is important when the buffer is in more | |
2752 | than one window. It also matters when | |
2753 | redisplay_window has altered point after scrolling, | |
2754 | because it makes the change only in the window. */ | |
2755 | { | |
2756 | register int new_point = marker_position (w->pointm); | |
2757 | if (new_point < BEGV) | |
2758 | SET_PT (BEGV); | |
a9c95e08 | 2759 | else if (new_point > ZV) |
7ab12479 JB |
2760 | SET_PT (ZV); |
2761 | else | |
2762 | SET_PT (new_point); | |
2763 | } | |
2764 | ||
2765 | windows_or_buffers_changed++; | |
2766 | return window; | |
2767 | } | |
b7354ddf | 2768 | \f |
441a127e RS |
2769 | /* Deiconify the frame containing the window WINDOW, |
2770 | unless it is the selected frame; | |
2771 | then return WINDOW. | |
2772 | ||
2773 | The reason for the exception for the selected frame | |
2774 | is that it seems better not to change the selected frames visibility | |
2775 | merely because of displaying a different buffer in it. | |
2776 | The deiconification is useful when a buffer gets shown in | |
2777 | another frame that you were not using lately. */ | |
d07f802a RS |
2778 | |
2779 | static Lisp_Object | |
2780 | display_buffer_1 (window) | |
2781 | Lisp_Object window; | |
2782 | { | |
1ae1a37d GM |
2783 | Lisp_Object frame = XWINDOW (window)->frame; |
2784 | FRAME_PTR f = XFRAME (frame); | |
2785 | ||
d07f802a | 2786 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2787 | |
2788 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2789 | { |
2790 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2791 | Fmake_frame_visible (frame); |
37962e60 | 2792 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2793 | Fraise_frame (frame); |
60117126 | 2794 | } |
1ae1a37d | 2795 | |
d07f802a RS |
2796 | return window; |
2797 | } | |
2798 | ||
4628f7a4 | 2799 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2800 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2801 | The value is actually t if the frame should be called with default frame\n\ | |
2802 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2803 | See `special-display-buffer-names', and `special-display-regexps'.") |
2804 | (buffer_name) | |
2805 | Lisp_Object buffer_name; | |
2806 | { | |
2807 | Lisp_Object tem; | |
2808 | ||
2809 | CHECK_STRING (buffer_name, 1); | |
2810 | ||
2811 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2812 | if (!NILP (tem)) | |
2813 | return Qt; | |
2814 | ||
2815 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2816 | if (!NILP (tem)) | |
2817 | return XCDR (tem); | |
2818 | ||
2819 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2820 | { | |
2821 | Lisp_Object car = XCAR (tem); | |
2822 | if (STRINGP (car) | |
2823 | && fast_string_match (car, buffer_name) >= 0) | |
2824 | return Qt; | |
2825 | else if (CONSP (car) | |
2826 | && STRINGP (XCAR (car)) | |
2827 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2828 | return XCDR (car); |
4628f7a4 EN |
2829 | } |
2830 | return Qnil; | |
2831 | } | |
2832 | ||
2833 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2834 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2835 | See `same-window-buffer-names' and `same-window-regexps'.") |
2836 | (buffer_name) | |
2837 | Lisp_Object buffer_name; | |
2838 | { | |
2839 | Lisp_Object tem; | |
2840 | ||
2841 | CHECK_STRING (buffer_name, 1); | |
2842 | ||
2843 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2844 | if (!NILP (tem)) | |
2845 | return Qt; | |
2846 | ||
2847 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2848 | if (!NILP (tem)) | |
2849 | return Qt; | |
2850 | ||
2851 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2852 | { | |
2853 | Lisp_Object car = XCAR (tem); | |
2854 | if (STRINGP (car) | |
2855 | && fast_string_match (car, buffer_name) >= 0) | |
2856 | return Qt; | |
2857 | else if (CONSP (car) | |
2858 | && STRINGP (XCAR (car)) | |
2859 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2860 | return Qt; | |
2861 | } | |
2862 | return Qnil; | |
2863 | } | |
2864 | ||
53f76081 RS |
2865 | /* Use B so the default is (other-buffer). */ |
2866 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, | |
2867 | "BDisplay buffer: \nP", | |
7ab12479 JB |
2868 | "Make BUFFER appear in some window but don't select it.\n\ |
2869 | BUFFER can be a buffer or a buffer name.\n\ | |
2870 | If BUFFER is shown already in some window, just use that one,\n\ | |
2871 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2872 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2873 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 | 2874 | Returns the window displaying BUFFER.\n\ |
9c3da604 GM |
2875 | If `display-reuse-frames' is non-nil, and another frame is currently\n\ |
2876 | displaying BUFFER, then simply raise that frame.\n\ | |
5abcf432 RS |
2877 | \n\ |
2878 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2879 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
53f76081 RS |
2880 | buffer names are handled.\n\ |
2881 | \n\ | |
2882 | If optional argument FRAME is `visible', search all visible frames.\n\ | |
2883 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2884 | If FRAME is t, search all frames.\n\ | |
2885 | If FRAME is a frame, search only that frame.\n\ | |
2886 | If FRAME is nil, search only the selected frame\n\ | |
2887 | (actually the last nonminibuffer frame),\n\ | |
32cf3ee0 | 2888 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,\n\ |
6529ed87 GM |
2889 | which means search visible and iconified frames.\n\ |
2890 | \n\ | |
2891 | If `even-window-heights' is non-nil, window heights will be evened out\n\ | |
e9ce2497 | 2892 | if displaying the buffer causes two vertically adjacent windows to be\n\ |
6529ed87 | 2893 | displayed.") |
53f76081 RS |
2894 | (buffer, not_this_window, frame) |
2895 | register Lisp_Object buffer, not_this_window, frame; | |
7ab12479 | 2896 | { |
aee631c2 | 2897 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2898 | struct frame *f; |
7ab12479 | 2899 | |
aee631c2 | 2900 | swp = Qnil; |
7ab12479 JB |
2901 | buffer = Fget_buffer (buffer); |
2902 | CHECK_BUFFER (buffer, 0); | |
2903 | ||
265a9e55 | 2904 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2905 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2906 | ||
265a9e55 | 2907 | if (NILP (not_this_window) |
7ab12479 | 2908 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2909 | return display_buffer_1 (selected_window); |
7ab12479 | 2910 | |
855d8627 RS |
2911 | /* See if the user has specified this buffer should appear |
2912 | in the selected window. */ | |
2913 | if (NILP (not_this_window)) | |
2914 | { | |
aee631c2 RS |
2915 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2916 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2917 | { |
2918 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2919 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2920 | } |
855d8627 RS |
2921 | } |
2922 | ||
9c3da604 | 2923 | /* If the user wants pop-up-frames or display-reuse-frames, then |
73dc5198 KH |
2924 | look for a window showing BUFFER on any visible or iconified frame. |
2925 | Otherwise search only the current frame. */ | |
53f76081 RS |
2926 | if (! NILP (frame)) |
2927 | tem = frame; | |
9c3da604 GM |
2928 | else if (pop_up_frames |
2929 | || display_buffer_reuse_frames | |
2930 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2931 | XSETFASTINT (tem, 0); |
2932 | else | |
73dc5198 | 2933 | XSETFRAME (tem, last_nonminibuf_frame); |
9c3da604 | 2934 | |
73dc5198 | 2935 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
2936 | if (!NILP (window) |
2937 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 2938 | return display_buffer_1 (window); |
7ab12479 | 2939 | |
a90712c2 | 2940 | /* Certain buffer names get special handling. */ |
aee631c2 | 2941 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2942 | { |
4628f7a4 EN |
2943 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2944 | if (EQ (tem, Qt)) | |
a90712c2 | 2945 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2946 | if (CONSP (tem)) |
2947 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2948 | } |
2949 | ||
44fa5b1e JB |
2950 | /* If there are no frames open that have more than a minibuffer, |
2951 | we need to create a new frame. */ | |
2952 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2953 | { |
a90712c2 | 2954 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2955 | Fset_window_buffer (window, buffer); |
d07f802a | 2956 | return display_buffer_1 (window); |
7ab12479 | 2957 | } |
7ab12479 | 2958 | |
1ae1a37d | 2959 | f = SELECTED_FRAME (); |
43bad991 | 2960 | if (pop_up_windows |
1ae1a37d | 2961 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2962 | /* If the current frame is a special display frame, |
2963 | don't try to reuse its windows. */ | |
1ae1a37d | 2964 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2965 | { |
12cae7c0 KH |
2966 | Lisp_Object frames; |
2967 | ||
37962e60 | 2968 | frames = Qnil; |
1ae1a37d | 2969 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2970 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2971 | /* Don't try to create a window if would get an error */ |
2972 | if (split_height_threshold < window_min_height << 1) | |
2973 | split_height_threshold = window_min_height << 1; | |
2974 | ||
cee67da9 RS |
2975 | /* Note that both Fget_largest_window and Fget_lru_window |
2976 | ignore minibuffers and dedicated windows. | |
2977 | This means they can return nil. */ | |
7ab12479 | 2978 | |
cee67da9 RS |
2979 | /* If the frame we would try to split cannot be split, |
2980 | try other frames. */ | |
1ae1a37d | 2981 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
2982 | { |
2983 | /* Try visible frames first. */ | |
2984 | window = Fget_largest_window (Qvisible); | |
2985 | /* If that didn't work, try iconified frames. */ | |
2986 | if (NILP (window)) | |
2987 | window = Fget_largest_window (make_number (0)); | |
2988 | if (NILP (window)) | |
2989 | window = Fget_largest_window (Qt); | |
2990 | } | |
2991 | else | |
2992 | window = Fget_largest_window (frames); | |
2993 | ||
92cca945 RS |
2994 | /* If we got a tall enough full-width window that can be split, |
2995 | split it. */ | |
265a9e55 | 2996 | if (!NILP (window) |
92cca945 | 2997 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2998 | && window_height (window) >= split_height_threshold |
111e5992 | 2999 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3000 | window = Fsplit_window (window, Qnil, Qnil); |
3001 | else | |
3002 | { | |
1942f68f RS |
3003 | Lisp_Object upper, lower, other; |
3004 | ||
44fa5b1e | 3005 | window = Fget_lru_window (frames); |
92cca945 RS |
3006 | /* If the LRU window is selected, and big enough, |
3007 | and can be split, split it. */ | |
cee67da9 | 3008 | if (!NILP (window) |
92cca945 | 3009 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3010 | && (EQ (window, selected_window) |
3011 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3012 | && window_height (window) >= window_min_height << 1) |
3013 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3014 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3015 | |
cee67da9 | 3016 | /* Try visible frames first. */ |
48d9379d RS |
3017 | if (NILP (window)) |
3018 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3019 | if (NILP (window)) |
3020 | window = Fget_largest_window (Qvisible); | |
3021 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3022 | if (NILP (window)) |
3023 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3024 | if (NILP (window)) |
3025 | window = Fget_largest_window (make_number (0)); | |
3026 | /* Try invisible frames. */ | |
48d9379d RS |
3027 | if (NILP (window)) |
3028 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3029 | if (NILP (window)) |
3030 | window = Fget_largest_window (Qt); | |
3031 | /* As a last resort, make a new frame. */ | |
3032 | if (NILP (window)) | |
3033 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3034 | /* If window appears above or below another, |
3035 | even out their heights. */ | |
cac66e4f | 3036 | other = upper = lower = Qnil; |
1942f68f RS |
3037 | if (!NILP (XWINDOW (window)->prev)) |
3038 | other = upper = XWINDOW (window)->prev, lower = window; | |
3039 | if (!NILP (XWINDOW (window)->next)) | |
3040 | other = lower = XWINDOW (window)->next, upper = window; | |
3041 | if (!NILP (other) | |
6529ed87 | 3042 | && !NILP (Veven_window_heights) |
1942f68f | 3043 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
296b535c KH |
3044 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
3045 | && (XFASTINT (XWINDOW (other)->height) | |
3046 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 3047 | { |
296b535c KH |
3048 | int total = (XFASTINT (XWINDOW (other)->height) |
3049 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
3050 | enlarge_window (upper, |
3051 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 3052 | 0); |
1942f68f | 3053 | } |
7ab12479 JB |
3054 | } |
3055 | } | |
3056 | else | |
3057 | window = Fget_lru_window (Qnil); | |
3058 | ||
3059 | Fset_window_buffer (window, buffer); | |
d07f802a | 3060 | return display_buffer_1 (window); |
7ab12479 JB |
3061 | } |
3062 | ||
3063 | void | |
3064 | temp_output_buffer_show (buf) | |
3065 | register Lisp_Object buf; | |
3066 | { | |
3067 | register struct buffer *old = current_buffer; | |
3068 | register Lisp_Object window; | |
3069 | register struct window *w; | |
3070 | ||
bccd3dd1 RS |
3071 | XBUFFER (buf)->directory = current_buffer->directory; |
3072 | ||
7ab12479 | 3073 | Fset_buffer (buf); |
c6367666 | 3074 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3075 | BEGV = BEG; |
3076 | ZV = Z; | |
3077 | SET_PT (BEG); | |
b1599b4c | 3078 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
3079 | set_buffer_internal (old); |
3080 | ||
3081 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3082 | call1 (Vtemp_buffer_show_function, buf); | |
3083 | else | |
3084 | { | |
53f76081 | 3085 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3086 | |
1ae1a37d | 3087 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3088 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3089 | Vminibuf_scroll_window = window; |
3090 | w = XWINDOW (window); | |
d834a2e9 | 3091 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3092 | XSETFASTINT (w->min_hscroll, 0); |
b73ea88e RS |
3093 | set_marker_restricted_both (w->start, buf, 1, 1); |
3094 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3095 | |
beb4e312 RS |
3096 | /* Run temp-buffer-show-hook, with the chosen window selected |
3097 | and it sbuffer current. */ | |
f52cca03 | 3098 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3099 | { |
f52cca03 RS |
3100 | Lisp_Object tem; |
3101 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3102 | if (!NILP (tem)) |
3103 | { | |
f52cca03 RS |
3104 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3105 | if (!NILP (tem)) | |
3106 | { | |
3107 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
3108 | Lisp_Object prev_window; |
3109 | prev_window = selected_window; | |
2cccc823 | 3110 | |
f52cca03 | 3111 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 3112 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 3113 | select_window_1 (window, 0); |
beb4e312 | 3114 | Fset_buffer (w->buffer); |
f52cca03 | 3115 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 3116 | select_window_1 (prev_window, 0); |
f52cca03 RS |
3117 | unbind_to (count, Qnil); |
3118 | } | |
2cccc823 RS |
3119 | } |
3120 | } | |
3121 | } | |
7ab12479 JB |
3122 | } |
3123 | \f | |
dfcf069d | 3124 | static void |
7ab12479 JB |
3125 | make_dummy_parent (window) |
3126 | Lisp_Object window; | |
3127 | { | |
cffec418 | 3128 | Lisp_Object new; |
7ab12479 | 3129 | register struct window *o, *p; |
cffec418 KH |
3130 | register struct Lisp_Vector *vec; |
3131 | int i; | |
7ab12479 | 3132 | |
cffec418 KH |
3133 | o = XWINDOW (window); |
3134 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
3135 | for (i = 0; i < VECSIZE (struct window); ++i) | |
3136 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
3137 | vec->size = VECSIZE (struct window); | |
3138 | p = (struct window *)vec; | |
3139 | XSETWINDOW (new, p); | |
7ab12479 | 3140 | |
d834a2e9 | 3141 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3142 | |
3143 | /* Put new into window structure in place of window */ | |
3144 | replace_window (window, new); | |
3145 | ||
3146 | o->next = Qnil; | |
3147 | o->prev = Qnil; | |
3148 | o->vchild = Qnil; | |
3149 | o->hchild = Qnil; | |
3150 | o->parent = new; | |
3151 | ||
3152 | p->start = Qnil; | |
3153 | p->pointm = Qnil; | |
3154 | p->buffer = Qnil; | |
3155 | } | |
3156 | ||
3157 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
3158 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
3159 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 3160 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
10f96191 RS |
3161 | and put SIZE columns in the first of the pair. In that case,\n\ |
3162 | SIZE includes that window's scroll bar, or the divider column to its right.") | |
77ae0fe3 KH |
3163 | (window, size, horflag) |
3164 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
3165 | { |
3166 | register Lisp_Object new; | |
3167 | register struct window *o, *p; | |
c0807608 | 3168 | FRAME_PTR fo; |
77ae0fe3 | 3169 | register int size_int; |
7ab12479 | 3170 | |
265a9e55 | 3171 | if (NILP (window)) |
7ab12479 JB |
3172 | window = selected_window; |
3173 | else | |
605be8af | 3174 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
3175 | |
3176 | o = XWINDOW (window); | |
c0807608 | 3177 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3178 | |
77ae0fe3 | 3179 | if (NILP (size)) |
7ab12479 | 3180 | { |
265a9e55 | 3181 | if (!NILP (horflag)) |
c0807608 | 3182 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3183 | the usable space in columns by two. |
3184 | We round up, since the left-hand window may include | |
3185 | a dividing line, while the right-hand may not. */ | |
3186 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3187 | else |
77ae0fe3 | 3188 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3189 | } |
3190 | else | |
3191 | { | |
77ae0fe3 KH |
3192 | CHECK_NUMBER (size, 1); |
3193 | size_int = XINT (size); | |
7ab12479 JB |
3194 | } |
3195 | ||
3196 | if (MINI_WINDOW_P (o)) | |
3197 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3198 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3199 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3200 | |
a481b3ea | 3201 | check_min_window_sizes (); |
7ab12479 | 3202 | |
265a9e55 | 3203 | if (NILP (horflag)) |
7ab12479 | 3204 | { |
77ae0fe3 KH |
3205 | if (size_int < window_min_height) |
3206 | error ("Window height %d too small (after splitting)", size_int); | |
3207 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3208 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3209 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3210 | if (NILP (o->parent) |
3211 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3212 | { |
3213 | make_dummy_parent (window); | |
3214 | new = o->parent; | |
3215 | XWINDOW (new)->vchild = window; | |
3216 | } | |
3217 | } | |
3218 | else | |
3219 | { | |
77ae0fe3 KH |
3220 | if (size_int < window_min_width) |
3221 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3222 | |
3223 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3224 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3225 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3226 | if (NILP (o->parent) |
3227 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3228 | { |
3229 | make_dummy_parent (window); | |
3230 | new = o->parent; | |
3231 | XWINDOW (new)->hchild = window; | |
3232 | } | |
3233 | } | |
3234 | ||
3235 | /* Now we know that window's parent is a vertical combination | |
3236 | if we are dividing vertically, or a horizontal combination | |
3237 | if we are making side-by-side windows */ | |
3238 | ||
3239 | windows_or_buffers_changed++; | |
c0807608 | 3240 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3241 | new = make_window (); |
3242 | p = XWINDOW (new); | |
3243 | ||
44fa5b1e | 3244 | p->frame = o->frame; |
7ab12479 | 3245 | p->next = o->next; |
265a9e55 | 3246 | if (!NILP (p->next)) |
7ab12479 JB |
3247 | XWINDOW (p->next)->prev = new; |
3248 | p->prev = window; | |
3249 | o->next = new; | |
3250 | p->parent = o->parent; | |
3251 | p->buffer = Qt; | |
5500c422 GM |
3252 | p->window_end_valid = Qnil; |
3253 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3254 | |
44fa5b1e | 3255 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3256 | |
265a9e55 | 3257 | if (!NILP (horflag)) |
7ab12479 JB |
3258 | { |
3259 | p->height = o->height; | |
3260 | p->top = o->top; | |
a59fed7e | 3261 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3262 | XSETFASTINT (o->width, size_int); |
3263 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3264 | } |
3265 | else | |
3266 | { | |
3267 | p->left = o->left; | |
3268 | p->width = o->width; | |
77ae0fe3 KH |
3269 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3270 | XSETFASTINT (o->height, size_int); | |
3271 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3272 | } |
3273 | ||
5500c422 GM |
3274 | /* Adjust glyph matrices. */ |
3275 | adjust_glyphs (fo); | |
543f5fb1 | 3276 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3277 | return new; |
3278 | } | |
3279 | \f | |
3280 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
3281 | "Make current window ARG lines bigger.\n\ | |
3282 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
3283 | (arg, side) |
3284 | register Lisp_Object arg, side; | |
7ab12479 | 3285 | { |
413430c5 | 3286 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3287 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3288 | |
3289 | if (! NILP (Vwindow_configuration_change_hook)) | |
3290 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3291 | ||
7ab12479 JB |
3292 | return Qnil; |
3293 | } | |
3294 | ||
3295 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
3296 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
3297 | From program, optional second arg non-nil means shrink sideways arg columns.") |
3298 | (arg, side) | |
3299 | register Lisp_Object arg, side; | |
7ab12479 | 3300 | { |
413430c5 | 3301 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3302 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3303 | |
3304 | if (! NILP (Vwindow_configuration_change_hook)) | |
3305 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3306 | ||
7ab12479 JB |
3307 | return Qnil; |
3308 | } | |
3309 | ||
3310 | int | |
3311 | window_height (window) | |
3312 | Lisp_Object window; | |
3313 | { | |
3314 | register struct window *p = XWINDOW (window); | |
3315 | return XFASTINT (p->height); | |
3316 | } | |
3317 | ||
3318 | int | |
3319 | window_width (window) | |
3320 | Lisp_Object window; | |
3321 | { | |
3322 | register struct window *p = XWINDOW (window); | |
3323 | return XFASTINT (p->width); | |
3324 | } | |
3325 | ||
c1636aa6 | 3326 | |
7ab12479 | 3327 | #define CURBEG(w) \ |
3578db3c | 3328 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3329 | |
3330 | #define CURSIZE(w) \ | |
3578db3c | 3331 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3332 | |
233a4a2c GM |
3333 | |
3334 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3335 | increase its width. Siblings of the selected window are resized to | |
3336 | fullfil the size request. If they become too small in the process, | |
3337 | they will be deleted. */ | |
7ab12479 | 3338 | |
f984d4fc | 3339 | static void |
86c8e823 GM |
3340 | enlarge_window (window, delta, widthflag) |
3341 | Lisp_Object window; | |
233a4a2c | 3342 | int delta, widthflag; |
7ab12479 | 3343 | { |
86c8e823 | 3344 | Lisp_Object parent, next, prev; |
233a4a2c | 3345 | struct window *p; |
3578db3c KR |
3346 | Lisp_Object *sizep; |
3347 | int maximum; | |
5e14b1fc AS |
3348 | int (*sizefun) P_ ((Lisp_Object)) |
3349 | = widthflag ? window_width : window_height; | |
233a4a2c | 3350 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3351 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3352 | |
233a4a2c GM |
3353 | /* Check values of window_min_width and window_min_height for |
3354 | validity. */ | |
a481b3ea | 3355 | check_min_window_sizes (); |
7ab12479 | 3356 | |
233a4a2c | 3357 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3358 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3359 | error ("Window is not resizable"); | |
3360 | ||
3361 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3362 | while (1) |
3363 | { | |
3364 | p = XWINDOW (window); | |
3365 | parent = p->parent; | |
233a4a2c | 3366 | |
265a9e55 | 3367 | if (NILP (parent)) |
7ab12479 JB |
3368 | { |
3369 | if (widthflag) | |
3370 | error ("No other window to side of this one"); | |
3371 | break; | |
3372 | } | |
233a4a2c GM |
3373 | |
3374 | if (widthflag | |
3375 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3376 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3377 | break; |
233a4a2c | 3378 | |
7ab12479 JB |
3379 | window = parent; |
3380 | } | |
3381 | ||
05c2896a | 3382 | sizep = &CURSIZE (window); |
7ab12479 | 3383 | |
7ab12479 JB |
3384 | { |
3385 | register int maxdelta; | |
7ab12479 | 3386 | |
3578db3c | 3387 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
c1636aa6 GM |
3388 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3389 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3390 | widthflag, 0, 0)) |
c1636aa6 GM |
3391 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3392 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3393 | widthflag, 0, 0)) |
44fa5b1e JB |
3394 | /* This is a frame with only one window, a minibuffer-only |
3395 | or a minibufferless frame. */ | |
d5783c40 | 3396 | : (delta = 0)); |
7ab12479 JB |
3397 | |
3398 | if (delta > maxdelta) | |
3399 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3400 | the full frame, or make the only window aside from the |
3401 | minibuffer the full frame. */ | |
7ab12479 | 3402 | delta = maxdelta; |
6b54027b | 3403 | } |
d5783c40 | 3404 | |
3578db3c | 3405 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3406 | { |
543f5fb1 | 3407 | delete_window (window); |
d5783c40 | 3408 | return; |
6b54027b RS |
3409 | } |
3410 | ||
3411 | if (delta == 0) | |
3412 | return; | |
7ab12479 | 3413 | |
db98a733 RS |
3414 | /* Find the total we can get from other siblings. */ |
3415 | maximum = 0; | |
3416 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3417 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3418 | widthflag, 0, 0); |
db98a733 | 3419 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3420 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3421 | widthflag, 0, 0); |
db98a733 RS |
3422 | |
3423 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3424 | if (delta <= maximum) |
7ab12479 | 3425 | { |
db98a733 RS |
3426 | Lisp_Object first_unaffected; |
3427 | Lisp_Object first_affected; | |
233a4a2c | 3428 | int fixed_p; |
db98a733 RS |
3429 | |
3430 | next = p->next; | |
3431 | prev = p->prev; | |
3432 | first_affected = window; | |
3433 | /* Look at one sibling at a time, | |
3434 | moving away from this window in both directions alternately, | |
3435 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3436 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3437 | { |
db98a733 RS |
3438 | if (! NILP (next)) |
3439 | { | |
c1636aa6 | 3440 | int this_one = ((*sizefun) (next) |
233a4a2c | 3441 | - window_min_size (XWINDOW (next), |
f984d4fc | 3442 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3443 | if (!fixed_p) |
3444 | { | |
3445 | if (this_one > delta) | |
3446 | this_one = delta; | |
3447 | ||
3448 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3449 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3450 | |
233a4a2c GM |
3451 | delta -= this_one; |
3452 | } | |
3453 | ||
db98a733 RS |
3454 | next = XWINDOW (next)->next; |
3455 | } | |
233a4a2c | 3456 | |
db98a733 RS |
3457 | if (delta == 0) |
3458 | break; | |
233a4a2c | 3459 | |
db98a733 RS |
3460 | if (! NILP (prev)) |
3461 | { | |
c1636aa6 | 3462 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3463 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3464 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3465 | if (!fixed_p) |
3466 | { | |
3467 | if (this_one > delta) | |
3468 | this_one = delta; | |
3469 | ||
3470 | first_affected = prev; | |
3471 | ||
3472 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3473 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3474 | |
3475 | delta -= this_one; | |
3476 | } | |
3477 | ||
db98a733 RS |
3478 | prev = XWINDOW (prev)->prev; |
3479 | } | |
3480 | } | |
3481 | ||
233a4a2c GM |
3482 | xassert (delta == 0); |
3483 | ||
db98a733 RS |
3484 | /* Now recalculate the edge positions of all the windows affected, |
3485 | based on the new sizes. */ | |
3486 | first_unaffected = next; | |
3487 | prev = first_affected; | |
3488 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3489 | prev = next, next = XWINDOW (next)->next) | |
3490 | { | |
3578db3c | 3491 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3492 | /* This does not change size of NEXT, |
3493 | but it propagates the new top edge to its children */ | |
3494 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3495 | } | |
7ab12479 JB |
3496 | } |
3497 | else | |
3498 | { | |
3499 | register int delta1; | |
3500 | register int opht = (*sizefun) (parent); | |
3501 | ||
3502 | /* If trying to grow this window to or beyond size of the parent, | |
3503 | make delta1 so big that, on shrinking back down, | |
3504 | all the siblings end up with less than one line and are deleted. */ | |
3578db3c | 3505 | if (opht <= XINT (*sizep) + delta) |
7ab12479 | 3506 | delta1 = opht * opht * 2; |
7ab12479 | 3507 | else |
233a4a2c GM |
3508 | { |
3509 | /* Otherwise, make delta1 just right so that if we add | |
3510 | delta1 lines to this window and to the parent, and then | |
3511 | shrink the parent back to its original size, the new | |
3512 | proportional size of this window will increase by delta. | |
3513 | ||
3514 | The function size_window will compute the new height h' | |
3515 | of the window from delta1 as: | |
3516 | ||
3517 | e = delta1/n | |
3518 | x = delta1 - delta1/n * n for the 1st resizable child | |
3519 | h' = h + e + x | |
3520 | ||
3521 | where n is the number of children that can be resized. | |
3522 | We can ignore x by choosing a delta1 that is a multiple of | |
3523 | n. We want the height of this window to come out as | |
3524 | ||
3525 | h' = h + delta | |
3526 | ||
3527 | So, delta1 must be | |
3528 | ||
3529 | h + e = h + delta | |
3530 | delta1/n = delta | |
3531 | delta1 = n * delta. | |
3532 | ||
3533 | The number of children n rquals the number of resizable | |
3534 | children of this window + 1 because we know window itself | |
3535 | is resizable (otherwise we would have signalled an error. */ | |
3536 | ||
3537 | struct window *w = XWINDOW (window); | |
3538 | Lisp_Object s; | |
3539 | int n = 1; | |
3540 | ||
3541 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3542 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3543 | ++n; | |
3544 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3545 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3546 | ++n; | |
3547 | ||
3548 | delta1 = n * delta; | |
3549 | } | |
7ab12479 JB |
3550 | |
3551 | /* Add delta1 lines or columns to this window, and to the parent, | |
3552 | keeping things consistent while not affecting siblings. */ | |
3578db3c KR |
3553 | XSETINT (CURSIZE (parent), opht + delta1); |
3554 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
7ab12479 JB |
3555 | |
3556 | /* Squeeze out delta1 lines or columns from our parent, | |
3557 | shriking this window and siblings proportionately. | |
3558 | This brings parent back to correct size. | |
3559 | Delta1 was calculated so this makes this window the desired size, | |
3560 | taking it all out of the siblings. */ | |
3561 | (*setsizefun) (parent, opht, 0); | |
3562 | } | |
3563 | ||
d834a2e9 | 3564 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3565 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3566 | |
3567 | /* Adjust glyph matrices. */ | |
3568 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3569 | } |
c1636aa6 | 3570 | |
7ab12479 JB |
3571 | #undef CURBEG |
3572 | #undef CURSIZE | |
3573 | ||
5500c422 | 3574 | |
f984d4fc GM |
3575 | \f |
3576 | /*********************************************************************** | |
3577 | Resizing Mini-Windows | |
3578 | ***********************************************************************/ | |
3579 | ||
3580 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3581 | |
43b4a21f GM |
3582 | enum save_restore_action |
3583 | { | |
3584 | CHECK_ORIG_SIZES, | |
3585 | SAVE_ORIG_SIZES, | |
3586 | RESTORE_ORIG_SIZES | |
3587 | }; | |
3588 | ||
3589 | static int save_restore_orig_size P_ ((struct window *, | |
3590 | enum save_restore_action)); | |
f984d4fc GM |
3591 | |
3592 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3593 | from lowest windows first. */ | |
3594 | ||
3595 | static void | |
3596 | shrink_window_lowest_first (w, height) | |
3597 | struct window *w; | |
3598 | int height; | |
3599 | { | |
3600 | struct window *c; | |
3601 | Lisp_Object child; | |
3602 | int old_height; | |
3603 | ||
3604 | xassert (!MINI_WINDOW_P (w)); | |
3605 | ||
3606 | /* Set redisplay hints. */ | |
3607 | XSETFASTINT (w->last_modified, 0); | |
3608 | XSETFASTINT (w->last_overlay_modified, 0); | |
3609 | windows_or_buffers_changed++; | |
3610 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3611 | ||
3612 | old_height = XFASTINT (w->height); | |
3613 | XSETFASTINT (w->height, height); | |
3614 | ||
3615 | if (!NILP (w->hchild)) | |
3616 | { | |
3617 | for (child = w->hchild; !NILP (child); child = c->next) | |
3618 | { | |
3619 | c = XWINDOW (child); | |
3620 | c->top = w->top; | |
3621 | shrink_window_lowest_first (c, height); | |
3622 | } | |
3623 | } | |
3624 | else if (!NILP (w->vchild)) | |
3625 | { | |
3626 | Lisp_Object last_child; | |
3627 | int delta = old_height - height; | |
3628 | int last_top; | |
6bbd7a29 GM |
3629 | |
3630 | last_child = Qnil; | |
f984d4fc GM |
3631 | |
3632 | /* Find the last child. We are taking space from lowest windows | |
3633 | first, so we iterate over children from the last child | |
3634 | backwards. */ | |
3635 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3636 | last_child = child; | |
3637 | ||
3638 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3639 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3640 | { | |
3641 | int this_one; | |
3642 | ||
3643 | c = XWINDOW (child); | |
3644 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3645 | ||
3646 | if (this_one > delta) | |
3647 | this_one = delta; | |
3648 | ||
3649 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3650 | delta -= this_one; | |
3651 | } | |
3652 | ||
3653 | /* Compute new positions. */ | |
3578db3c | 3654 | last_top = XINT (w->top); |
f984d4fc GM |
3655 | for (child = w->vchild; !NILP (child); child = c->next) |
3656 | { | |
3657 | c = XWINDOW (child); | |
3658 | c->top = make_number (last_top); | |
3659 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3660 | last_top += XFASTINT (c->height); | |
3661 | } | |
3662 | } | |
3663 | } | |
3664 | ||
3665 | ||
43b4a21f GM |
3666 | /* Save, restore, or check positions and sizes in the window tree |
3667 | rooted at W. ACTION says what to do. | |
f984d4fc | 3668 | |
43b4a21f GM |
3669 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3670 | members are valid for all windows in the window tree. Value is | |
3671 | non-zero if they are valid. | |
3672 | ||
3673 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3674 | orig_top and orig_height for all windows in the tree. | |
3675 | ||
3676 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3677 | values stored in orig_top and orig_height for all windows. */ | |
3678 | ||
3679 | static int | |
3680 | save_restore_orig_size (w, action) | |
f984d4fc | 3681 | struct window *w; |
43b4a21f | 3682 | enum save_restore_action action; |
f984d4fc | 3683 | { |
43b4a21f GM |
3684 | int success_p = 1; |
3685 | ||
f984d4fc GM |
3686 | while (w) |
3687 | { | |
3688 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3689 | { |
3690 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3691 | success_p = 0; | |
3692 | } | |
f984d4fc | 3693 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3694 | { |
3695 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3696 | success_p = 0; | |
3697 | } | |
f984d4fc | 3698 | |
43b4a21f | 3699 | switch (action) |
f984d4fc | 3700 | { |
43b4a21f GM |
3701 | case CHECK_ORIG_SIZES: |
3702 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3703 | return 0; | |
3704 | break; | |
3705 | ||
3706 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3707 | w->orig_top = w->top; |
3708 | w->orig_height = w->height; | |
43b4a21f GM |
3709 | XSETFASTINT (w->last_modified, 0); |
3710 | XSETFASTINT (w->last_overlay_modified, 0); | |
3711 | break; | |
3712 | ||
3713 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3714 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3715 | w->top = w->orig_top; | |
3716 | w->height = w->orig_height; | |
3717 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3718 | XSETFASTINT (w->last_modified, 0); |
3719 | XSETFASTINT (w->last_overlay_modified, 0); | |
3720 | break; | |
3721 | ||
3722 | default: | |
3723 | abort (); | |
f984d4fc | 3724 | } |
43b4a21f | 3725 | |
f984d4fc GM |
3726 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3727 | } | |
43b4a21f GM |
3728 | |
3729 | return success_p; | |
f984d4fc GM |
3730 | } |
3731 | ||
3732 | ||
3733 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3734 | without deleting other windows. */ | |
3735 | ||
3736 | void | |
3737 | grow_mini_window (w, delta) | |
3738 | struct window *w; | |
3739 | int delta; | |
3740 | { | |
3741 | struct frame *f = XFRAME (w->frame); | |
3742 | struct window *root; | |
3743 | ||
3744 | xassert (MINI_WINDOW_P (w)); | |
3745 | xassert (delta >= 0); | |
3746 | ||
3747 | /* Check values of window_min_width and window_min_height for | |
3748 | validity. */ | |
3749 | check_min_window_sizes (); | |
3750 | ||
3751 | /* Compute how much we can enlarge the mini-window without deleting | |
3752 | other windows. */ | |
3753 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3754 | if (delta) | |
3755 | { | |
3756 | int min_height = window_min_size (root, 0, 0, 0); | |
3757 | if (XFASTINT (root->height) - delta < min_height) | |
3758 | delta = XFASTINT (root->height) - min_height; | |
3759 | } | |
3760 | ||
3761 | if (delta) | |
3762 | { | |
3763 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3764 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3765 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3766 | |
3767 | /* Shrink other windows. */ | |
3768 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3769 | ||
3770 | /* Grow the mini-window. */ | |
3578db3c | 3771 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3772 | w->height = make_number (XFASTINT (w->height) + delta); |
3773 | XSETFASTINT (w->last_modified, 0); | |
3774 | XSETFASTINT (w->last_overlay_modified, 0); | |
3775 | ||
3776 | adjust_glyphs (f); | |
3777 | } | |
3778 | } | |
3779 | ||
3780 | ||
86c8e823 GM |
3781 | /* Shrink mini-window W. If there is recorded info about window sizes |
3782 | before a call to grow_mini_window, restore recorded window sizes. | |
3783 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3784 | line. */ | |
f984d4fc GM |
3785 | |
3786 | void | |
3787 | shrink_mini_window (w) | |
3788 | struct window *w; | |
3789 | { | |
3790 | struct frame *f = XFRAME (w->frame); | |
3791 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3792 | ||
43b4a21f | 3793 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3794 | { |
43b4a21f | 3795 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3796 | adjust_glyphs (f); |
3797 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3798 | windows_or_buffers_changed = 1; | |
3799 | } | |
86c8e823 GM |
3800 | else if (XFASTINT (w->height) > 1) |
3801 | { | |
3802 | Lisp_Object window; | |
3803 | XSETWINDOW (window, w); | |
3804 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3805 | } | |
f984d4fc GM |
3806 | } |
3807 | ||
3808 | ||
3809 | \f | |
5500c422 GM |
3810 | /* Mark window cursors off for all windows in the window tree rooted |
3811 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3812 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3813 | the frame are cleared. */ | |
3814 | ||
3815 | void | |
3816 | mark_window_cursors_off (w) | |
3817 | struct window *w; | |
3818 | { | |
3819 | while (w) | |
3820 | { | |
3821 | if (!NILP (w->hchild)) | |
3822 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3823 | else if (!NILP (w->vchild)) | |
3824 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3825 | else | |
3826 | w->phys_cursor_on_p = 0; | |
3827 | ||
3828 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3829 | } | |
3830 | } | |
3831 | ||
3832 | ||
7ab12479 JB |
3833 | /* Return number of lines of text (not counting mode line) in W. */ |
3834 | ||
3835 | int | |
3836 | window_internal_height (w) | |
3837 | struct window *w; | |
3838 | { | |
3839 | int ht = XFASTINT (w->height); | |
3840 | ||
3841 | if (MINI_WINDOW_P (w)) | |
3842 | return ht; | |
3843 | ||
265a9e55 JB |
3844 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
3845 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 3846 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
3847 | return ht - 1; |
3848 | ||
3849 | return ht; | |
3850 | } | |
3851 | ||
535e0b8e JB |
3852 | |
3853 | /* Return the number of columns in W. | |
a3c87d4e | 3854 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3855 | separating W from the sibling to its right. */ |
5500c422 | 3856 | |
535e0b8e JB |
3857 | int |
3858 | window_internal_width (w) | |
3859 | struct window *w; | |
3860 | { | |
5500c422 | 3861 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3862 | int width = XINT (w->width); |
3863 | ||
a3c87d4e | 3864 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3865 | /* Scroll bars occupy a few columns. */ |
3866 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3867 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3868 | /* The column of `|' characters separating side-by-side windows | |
3869 | occupies one column only. */ | |
3870 | width -= 1; | |
3871 | ||
3872 | /* On window-systems, areas to the left and right of the window | |
3873 | are used to display bitmaps there. */ | |
3874 | if (FRAME_WINDOW_P (f)) | |
b46dfc64 | 3875 | width -= FRAME_FLAGS_AREA_COLS (f); |
111e5992 RS |
3876 | |
3877 | return width; | |
535e0b8e JB |
3878 | } |
3879 | ||
5500c422 GM |
3880 | \f |
3881 | /************************************************************************ | |
3882 | Window Scrolling | |
3883 | ***********************************************************************/ | |
535e0b8e | 3884 | |
5500c422 GM |
3885 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
3886 | one screen-full, which is defined as the height of the window minus | |
3887 | next_screen_context_lines. If WHOLE is zero, scroll up N lines | |
3888 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3889 | means don't signal an error if we try to move over BEGV or ZV, | |
3890 | respectively. */ | |
7ab12479 | 3891 | |
101d1605 RS |
3892 | static void |
3893 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3894 | Lisp_Object window; |
3895 | int n; | |
101d1605 | 3896 | int whole; |
f8026fd8 | 3897 | int noerror; |
5500c422 GM |
3898 | { |
3899 | /* If we must, use the pixel-based version which is much slower than | |
3900 | the line-based one but can handle varying line heights. */ | |
3901 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3902 | window_scroll_pixel_based (window, n, whole, noerror); | |
3903 | else | |
3904 | window_scroll_line_based (window, n, whole, noerror); | |
3905 | } | |
3906 | ||
3907 | ||
3908 | /* Implementation of window_scroll that works based on pixel line | |
3909 | heights. See the comment of window_scroll for parameter | |
3910 | descriptions. */ | |
3911 | ||
3912 | static void | |
3913 | window_scroll_pixel_based (window, n, whole, noerror) | |
3914 | Lisp_Object window; | |
3915 | int n; | |
3916 | int whole; | |
3917 | int noerror; | |
3918 | { | |
3919 | struct it it; | |
3920 | struct window *w = XWINDOW (window); | |
3921 | struct text_pos start; | |
3922 | Lisp_Object tem; | |
3923 | int this_scroll_margin; | |
3924 | int preserve_y; | |
5cdb3cf3 MB |
3925 | /* True if we fiddled the window vscroll field without really scrolling. */ |
3926 | int vscrolled = 0; | |
5500c422 GM |
3927 | |
3928 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3929 | ||
3930 | /* If PT is not visible in WINDOW, move back one half of | |
3931 | the screen. */ | |
d72340d4 | 3932 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qnil); |
5500c422 GM |
3933 | if (NILP (tem)) |
3934 | { | |
3935 | /* Move backward half the height of the window. Performance note: | |
3936 | vmotion used here is about 10% faster, but would give wrong | |
3937 | results for variable height lines. */ | |
3938 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3939 | it.current_y = it.last_visible_y; | |
3940 | move_it_vertically (&it, -it.last_visible_y / 2); | |
3941 | ||
3942 | /* The function move_iterator_vertically may move over more than | |
3943 | the specified y-distance. If it->w is small, e.g. a | |
3944 | mini-buffer window, we may end up in front of the window's | |
3945 | display area. This is the case when Start displaying at the | |
3946 | start of the line containing PT in this case. */ | |
3947 | if (it.current_y <= 0) | |
3948 | { | |
3949 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3950 | move_it_vertically (&it, 0); | |
3951 | it.current_y = 0; | |
3952 | } | |
3953 | ||
3954 | start = it.current.pos; | |
3955 | } | |
3956 | ||
3957 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3958 | point in the same window line as it is now, so get that line. */ | |
3959 | if (!NILP (Vscroll_preserve_screen_position)) | |
3960 | { | |
3961 | start_display (&it, w, start); | |
3962 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3963 | preserve_y = it.current_y; | |
3964 | } | |
3965 | else | |
3966 | preserve_y = -1; | |
3967 | ||
3968 | /* Move iterator it from start the specified distance forward or | |
3969 | backward. The result is the new window start. */ | |
3970 | start_display (&it, w, start); | |
3971 | if (whole) | |
3972 | { | |
3973 | int screen_full = (it.last_visible_y | |
3974 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); | |
3975 | int direction = n < 0 ? -1 : 1; | |
d72340d4 GM |
3976 | int dy = direction * screen_full; |
3977 | ||
3978 | /* Note that move_it_vertically always moves the iterator to the | |
3979 | start of a line. So, if the last line doesn't have a newline, | |
3980 | we would end up at the start of the line ending at ZV. */ | |
3981 | if (dy <= 0) | |
3982 | move_it_vertically_backward (&it, -dy); | |
3983 | else if (dy > 0) | |
3984 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, | |
3985 | MOVE_TO_POS | MOVE_TO_Y); | |
5500c422 GM |
3986 | } |
3987 | else | |
3988 | move_it_by_lines (&it, n, 1); | |
3989 | ||
3990 | /* End if we end up at ZV or BEGV. */ | |
3991 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
3992 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
3993 | { | |
5cdb3cf3 MB |
3994 | if (IT_CHARPOS (it) == ZV) |
3995 | { | |
3996 | if (it.current_y + it.max_ascent + it.max_descent | |
3997 | > it.last_visible_y) | |
3998 | /* The last line was only partially visible, make it fully | |
3999 | visible. */ | |
d72340d4 GM |
4000 | w->vscroll = (it.last_visible_y |
4001 | - it.current_y + it.max_ascent + it.max_descent); | |
5cdb3cf3 MB |
4002 | else if (noerror) |
4003 | return; | |
4004 | else | |
4005 | Fsignal (Qend_of_buffer, Qnil); | |
4006 | } | |
5500c422 | 4007 | else |
5cdb3cf3 MB |
4008 | { |
4009 | if (w->vscroll != 0) | |
4010 | /* The first line was only partially visible, make it fully | |
4011 | visible. */ | |
4012 | w->vscroll = 0; | |
4013 | else if (noerror) | |
4014 | return; | |
4015 | else | |
4016 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4017 | } | |
4018 | ||
4019 | /* If control gets here, then we vscrolled. */ | |
4020 | ||
4021 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4022 | ||
4023 | /* Don't try to change the window start below. */ | |
4024 | vscrolled = 1; | |
5500c422 GM |
4025 | } |
4026 | ||
5cdb3cf3 MB |
4027 | if (! vscrolled) |
4028 | { | |
4029 | /* Set the window start, and set up the window for redisplay. */ | |
4030 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), | |
4031 | w->buffer); | |
4032 | w->start_at_line_beg = Fbolp (); | |
4033 | w->update_mode_line = Qt; | |
4034 | XSETFASTINT (w->last_modified, 0); | |
4035 | XSETFASTINT (w->last_overlay_modified, 0); | |
4036 | /* Set force_start so that redisplay_window will run the | |
4037 | window-scroll-functions. */ | |
4038 | w->force_start = Qt; | |
4039 | } | |
5500c422 GM |
4040 | |
4041 | it.current_y = it.vpos = 0; | |
4042 | ||
4043 | /* Preserve the screen position if we must. */ | |
4044 | if (preserve_y >= 0) | |
4045 | { | |
4046 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
4047 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4048 | } | |
4049 | else | |
4050 | { | |
4051 | /* Move PT out of scroll margins. */ | |
4052 | this_scroll_margin = max (0, scroll_margin); | |
4053 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
4054 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
4055 | ||
4056 | if (n > 0) | |
4057 | { | |
4058 | /* We moved the window start towards ZV, so PT may be now | |
4059 | in the scroll margin at the top. */ | |
4060 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4061 | while (it.current_y < this_scroll_margin) | |
4062 | move_it_by_lines (&it, 1, 1); | |
4063 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4064 | } | |
4065 | else if (n < 0) | |
4066 | { | |
5cdb3cf3 MB |
4067 | int charpos, bytepos; |
4068 | ||
5500c422 GM |
4069 | /* We moved the window start towards BEGV, so PT may be now |
4070 | in the scroll margin at the bottom. */ | |
4071 | move_it_to (&it, PT, -1, | |
4072 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4073 | MOVE_TO_POS | MOVE_TO_Y); | |
5cdb3cf3 MB |
4074 | |
4075 | /* Save our position, in case it's correct. */ | |
4076 | charpos = IT_CHARPOS (it); | |
4077 | bytepos = IT_BYTEPOS (it); | |
5500c422 | 4078 | |
5cdb3cf3 MB |
4079 | /* See if point is on a partially visible line at the end. */ |
4080 | move_it_by_lines (&it, 1, 1); | |
4081 | if (it.current_y > it.last_visible_y) | |
4082 | /* The last line was only partially visible, so back up two | |
4083 | lines to make sure we're on a fully visible line. */ | |
4084 | { | |
4085 | move_it_by_lines (&it, -2, 0); | |
4086 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4087 | } | |
4088 | else | |
4089 | /* No, the position we saved is OK, so use it. */ | |
4090 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4091 | } |
4092 | } | |
4093 | } | |
4094 | ||
4095 | ||
4096 | /* Implementation of window_scroll that works based on screen lines. | |
4097 | See the comment of window_scroll for parameter descriptions. */ | |
4098 | ||
4099 | static void | |
4100 | window_scroll_line_based (window, n, whole, noerror) | |
4101 | Lisp_Object window; | |
4102 | int n; | |
4103 | int whole; | |
4104 | int noerror; | |
7ab12479 JB |
4105 | { |
4106 | register struct window *w = XWINDOW (window); | |
5500c422 | 4107 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4108 | register int pos, pos_byte; |
7ab12479 JB |
4109 | register int ht = window_internal_height (w); |
4110 | register Lisp_Object tem; | |
4111 | int lose; | |
5500c422 | 4112 | Lisp_Object bolp; |
345d45b2 | 4113 | int startpos; |
101d1605 RS |
4114 | struct position posit; |
4115 | int original_vpos; | |
4116 | ||
4117 | startpos = marker_position (w->start); | |
4118 | ||
4119 | posit = *compute_motion (startpos, 0, 0, 0, | |
4120 | PT, ht, 0, | |
4121 | window_internal_width (w), XINT (w->hscroll), | |
4122 | 0, w); | |
4123 | original_vpos = posit.vpos; | |
0a1f771a | 4124 | |
d834a2e9 | 4125 | XSETFASTINT (tem, PT); |
6ffdb539 | 4126 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4127 | |
265a9e55 | 4128 | if (NILP (tem)) |
7ab12479 | 4129 | { |
cd2be1dd | 4130 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4131 | startpos = PT; |
7ab12479 JB |
4132 | } |
4133 | ||
345d45b2 | 4134 | SET_PT (startpos); |
5ce7b543 | 4135 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4136 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4137 | pos = PT; |
b73ea88e | 4138 | pos_byte = PT_BYTE; |
7ab12479 | 4139 | bolp = Fbolp (); |
b73ea88e | 4140 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4141 | |
4142 | if (lose) | |
f8026fd8 JB |
4143 | { |
4144 | if (noerror) | |
4145 | return; | |
4146 | else | |
4147 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4148 | } | |
7ab12479 JB |
4149 | |
4150 | if (pos < ZV) | |
7ab12479 | 4151 | { |
0c7da84e RS |
4152 | int this_scroll_margin = scroll_margin; |
4153 | ||
4154 | /* Don't use a scroll margin that is negative or too large. */ | |
4155 | if (this_scroll_margin < 0) | |
4156 | this_scroll_margin = 0; | |
4157 | ||
4158 | if (XINT (w->height) < 4 * scroll_margin) | |
4159 | this_scroll_margin = XINT (w->height) / 4; | |
4160 | ||
b73ea88e | 4161 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4162 | w->start_at_line_beg = bolp; |
4163 | w->update_mode_line = Qt; | |
d834a2e9 | 4164 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4165 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4166 | /* Set force_start so that redisplay_window will run |
4167 | the window-scroll-functions. */ | |
4168 | w->force_start = Qt; | |
0c7da84e | 4169 | |
5500c422 | 4170 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4171 | { |
b73ea88e | 4172 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4173 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4174 | } |
101d1605 RS |
4175 | /* If we scrolled forward, put point enough lines down |
4176 | that it is outside the scroll margin. */ | |
4177 | else if (n > 0) | |
0c7da84e | 4178 | { |
101d1605 RS |
4179 | int top_margin; |
4180 | ||
4181 | if (this_scroll_margin > 0) | |
4182 | { | |
b73ea88e | 4183 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4184 | Fvertical_motion (make_number (this_scroll_margin), window); |
4185 | top_margin = PT; | |
4186 | } | |
4187 | else | |
4188 | top_margin = pos; | |
4189 | ||
4190 | if (top_margin <= opoint) | |
b73ea88e | 4191 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4192 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4193 | { |
b73ea88e | 4194 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4195 | Fvertical_motion (make_number (original_vpos), window); |
4196 | } | |
9317a85d | 4197 | else |
335406fc | 4198 | SET_PT (top_margin); |
0c7da84e | 4199 | } |
101d1605 | 4200 | else if (n < 0) |
7ab12479 | 4201 | { |
101d1605 RS |
4202 | int bottom_margin; |
4203 | ||
0c7da84e RS |
4204 | /* If we scrolled backward, put point near the end of the window |
4205 | but not within the scroll margin. */ | |
b73ea88e | 4206 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4207 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4208 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4209 | bottom_margin = PT; | |
4210 | else | |
4211 | bottom_margin = PT + 1; | |
4212 | ||
4213 | if (bottom_margin > opoint) | |
b73ea88e | 4214 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4215 | else |
101d1605 | 4216 | { |
5500c422 | 4217 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4218 | { |
b73ea88e | 4219 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4220 | Fvertical_motion (make_number (original_vpos), window); |
4221 | } | |
4222 | else | |
4223 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4224 | } |
7ab12479 JB |
4225 | } |
4226 | } | |
4227 | else | |
f8026fd8 JB |
4228 | { |
4229 | if (noerror) | |
4230 | return; | |
4231 | else | |
4232 | Fsignal (Qend_of_buffer, Qnil); | |
4233 | } | |
7ab12479 | 4234 | } |
5500c422 GM |
4235 | |
4236 | ||
4237 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4238 | screen-full which is defined as the height of the window minus | |
4239 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4240 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4241 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4242 | |
4243 | static void | |
4244 | scroll_command (n, direction) | |
5500c422 | 4245 | Lisp_Object n; |
7ab12479 JB |
4246 | int direction; |
4247 | { | |
4248 | register int defalt; | |
4249 | int count = specpdl_ptr - specpdl; | |
4250 | ||
5500c422 GM |
4251 | xassert (abs (direction) == 1); |
4252 | ||
4253 | /* If selected window's buffer isn't current, make it current for | |
4254 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4255 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4256 | { |
4257 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4258 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4259 | |
4260 | /* Make redisplay consider other windows than just selected_window. */ | |
4261 | ++windows_or_buffers_changed; | |
95605e15 | 4262 | } |
7ab12479 JB |
4263 | |
4264 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
4265 | - next_screen_context_lines); | |
4266 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
4267 | ||
265a9e55 | 4268 | if (NILP (n)) |
101d1605 | 4269 | window_scroll (selected_window, defalt, 1, 0); |
7ab12479 | 4270 | else if (EQ (n, Qminus)) |
101d1605 | 4271 | window_scroll (selected_window, - defalt, 1, 0); |
7ab12479 JB |
4272 | else |
4273 | { | |
4274 | n = Fprefix_numeric_value (n); | |
101d1605 | 4275 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4276 | } |
95605e15 JB |
4277 | |
4278 | unbind_to (count, Qnil); | |
7ab12479 JB |
4279 | } |
4280 | ||
4281 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
4282 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
4283 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 4284 | Negative ARG means scroll downward.\n\ |
dd394ff9 KH |
4285 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4286 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4287 | (arg) |
4288 | Lisp_Object arg; | |
7ab12479 | 4289 | { |
413430c5 | 4290 | scroll_command (arg, 1); |
7ab12479 JB |
4291 | return Qnil; |
4292 | } | |
4293 | ||
4294 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a5fcbc4e | 4295 | "Scroll text of current window down ARG lines; or near full screen if no ARG.\n\ |
7ab12479 | 4296 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
279e0e0c | 4297 | Negative ARG means scroll upward.\n\ |
dd394ff9 KH |
4298 | If ARG is the atom `-', scroll upward by nearly full screen.\n\ |
4299 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4300 | (arg) |
4301 | Lisp_Object arg; | |
7ab12479 | 4302 | { |
413430c5 | 4303 | scroll_command (arg, -1); |
7ab12479 JB |
4304 | return Qnil; |
4305 | } | |
ccd0664b RS |
4306 | \f |
4307 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
4308 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 4309 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
4310 | specifies the window.\n\ |
4311 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
4312 | showing that buffer is used.") | |
eb16ec06 | 4313 | () |
7ab12479 | 4314 | { |
ccd0664b | 4315 | Lisp_Object window; |
7ab12479 JB |
4316 | |
4317 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4318 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4319 | window = Vminibuf_scroll_window; |
4320 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4321 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4322 | { |
4323 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4324 | if (NILP (window)) |
53f76081 | 4325 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4326 | } |
4327 | else | |
dbc4e1c1 JB |
4328 | { |
4329 | /* Nothing specified; look for a neighboring window on the same | |
4330 | frame. */ | |
4331 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4332 | ||
4333 | if (EQ (window, selected_window)) | |
4334 | /* That didn't get us anywhere; look for a window on another | |
4335 | visible frame. */ | |
4336 | do | |
4337 | window = Fnext_window (window, Qnil, Qt); | |
4338 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4339 | && ! EQ (window, selected_window)); | |
4340 | } | |
4341 | ||
605be8af | 4342 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
4343 | |
4344 | if (EQ (window, selected_window)) | |
4345 | error ("There is no other window"); | |
4346 | ||
ccd0664b RS |
4347 | return window; |
4348 | } | |
4349 | ||
4350 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
4351 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
dd394ff9 | 4352 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
ccd0664b RS |
4353 | The next window is the one below the current one; or the one at the top\n\ |
4354 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
dd394ff9 KH |
4355 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4356 | When calling from a program, supply as argument a number, nil, or `-'.\n\ | |
ccd0664b RS |
4357 | \n\ |
4358 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
4359 | specifies the window to scroll.\n\ | |
4360 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
4361 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
4362 | (arg) |
4363 | register Lisp_Object arg; | |
ccd0664b RS |
4364 | { |
4365 | register Lisp_Object window; | |
2f787aa3 | 4366 | register int defalt; |
ccd0664b RS |
4367 | register struct window *w; |
4368 | register int count = specpdl_ptr - specpdl; | |
4369 | ||
4370 | window = Fother_window_for_scrolling (); | |
4371 | ||
7ab12479 | 4372 | w = XWINDOW (window); |
2f787aa3 KH |
4373 | defalt = window_internal_height (w) - next_screen_context_lines; |
4374 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
4375 | |
4376 | /* Don't screw up if window_scroll gets an error. */ | |
4377 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4378 | ++windows_or_buffers_changed; |
7ab12479 JB |
4379 | |
4380 | Fset_buffer (w->buffer); | |
4381 | SET_PT (marker_position (w->pointm)); | |
4382 | ||
413430c5 | 4383 | if (NILP (arg)) |
101d1605 | 4384 | window_scroll (window, defalt, 1, 1); |
413430c5 | 4385 | else if (EQ (arg, Qminus)) |
101d1605 | 4386 | window_scroll (window, -defalt, 1, 1); |
7ab12479 JB |
4387 | else |
4388 | { | |
413430c5 EN |
4389 | if (CONSP (arg)) |
4390 | arg = Fcar (arg); | |
4391 | CHECK_NUMBER (arg, 0); | |
101d1605 | 4392 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4393 | } |
4394 | ||
b73ea88e | 4395 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4396 | unbind_to (count, Qnil); |
7ab12479 JB |
4397 | |
4398 | return Qnil; | |
4399 | } | |
4400 | \f | |
644b477c | 4401 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
4402 | "Scroll selected window display ARG columns left.\n\ |
4403 | Default for ARG is window width minus 2.") | |
4404 | (arg) | |
4405 | register Lisp_Object arg; | |
4406 | { | |
4407 | ||
265a9e55 | 4408 | if (NILP (arg)) |
d834a2e9 | 4409 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4410 | else |
4411 | arg = Fprefix_numeric_value (arg); | |
4412 | ||
4413 | return | |
4414 | Fset_window_hscroll (selected_window, | |
4415 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4416 | + XINT (arg))); | |
4417 | } | |
4418 | ||
644b477c | 4419 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
4420 | "Scroll selected window display ARG columns right.\n\ |
4421 | Default for ARG is window width minus 2.") | |
4422 | (arg) | |
4423 | register Lisp_Object arg; | |
4424 | { | |
265a9e55 | 4425 | if (NILP (arg)) |
d834a2e9 | 4426 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4427 | else |
4428 | arg = Fprefix_numeric_value (arg); | |
4429 | ||
4430 | return | |
4431 | Fset_window_hscroll (selected_window, | |
4432 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4433 | - XINT (arg))); | |
4434 | } | |
4435 | ||
12c8b416 GM |
4436 | |
4437 | /* Value is the number of lines actually displayed in window W, | |
4438 | as opposed to its height. */ | |
4439 | ||
4440 | static int | |
4441 | displayed_window_lines (w) | |
4442 | struct window *w; | |
4443 | { | |
4444 | struct it it; | |
4445 | struct text_pos start; | |
4446 | int height = window_box_height (w); | |
4447 | struct buffer *old_buffer; | |
4448 | int bottom_y; | |
4449 | ||
4450 | if (XBUFFER (w->buffer) != current_buffer) | |
4451 | { | |
4452 | old_buffer = current_buffer; | |
4453 | set_buffer_internal (XBUFFER (w->buffer)); | |
4454 | } | |
4455 | else | |
4456 | old_buffer = NULL; | |
4457 | ||
4458 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4459 | start_display (&it, w, start); | |
4460 | move_it_vertically (&it, height); | |
4461 | ||
4462 | if (old_buffer) | |
4463 | set_buffer_internal (old_buffer); | |
4464 | ||
4465 | bottom_y = it.current_y + it.max_ascent + it.max_descent; | |
4466 | ||
4467 | if (bottom_y > it.current_y && bottom_y <= it.last_visible_y) | |
4468 | /* Hit a line without a terminating newline. */ | |
4469 | it.vpos++; | |
4470 | ||
4471 | /* Add in empty lines at the bottom of the window. */ | |
4472 | if (bottom_y < height) | |
4473 | { | |
4474 | struct frame *f = XFRAME (w->frame); | |
4475 | int rest = height - bottom_y; | |
4476 | int lines = rest / CANON_Y_UNIT (f); | |
4477 | it.vpos += lines; | |
4478 | } | |
4479 | ||
4480 | return it.vpos; | |
4481 | } | |
4482 | ||
4483 | ||
7ab12479 | 4484 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
44fa5b1e | 4485 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 4486 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 4487 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 4488 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 4489 | redraws with point in the center of the current window.") |
413430c5 EN |
4490 | (arg) |
4491 | register Lisp_Object arg; | |
7ab12479 JB |
4492 | { |
4493 | register struct window *w = XWINDOW (selected_window); | |
12c8b416 | 4494 | register int ht = displayed_window_lines (w); |
113d9015 | 4495 | struct position pos; |
478292ed RS |
4496 | struct buffer *buf = XBUFFER (w->buffer); |
4497 | struct buffer *obuf = current_buffer; | |
7ab12479 | 4498 | |
413430c5 | 4499 | if (NILP (arg)) |
7ab12479 | 4500 | { |
44fa5b1e | 4501 | extern int frame_garbaged; |
f02d6d5c KH |
4502 | int i; |
4503 | ||
4504 | /* Invalidate pixel data calculated for all compositions. */ | |
4505 | for (i = 0; i < n_compositions; i++) | |
4506 | composition_table[i]->font = NULL; | |
7ab12479 | 4507 | |
527b6458 | 4508 | Fredraw_frame (w->frame); |
44fa5b1e | 4509 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 4510 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 4511 | } |
413430c5 | 4512 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 4513 | { |
413430c5 | 4514 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
4515 | } |
4516 | else | |
4517 | { | |
413430c5 EN |
4518 | arg = Fprefix_numeric_value (arg); |
4519 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
4520 | } |
4521 | ||
413430c5 EN |
4522 | if (XINT (arg) < 0) |
4523 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 4524 | |
478292ed | 4525 | set_buffer_internal (buf); |
6ec8bbd2 | 4526 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 4527 | |
b73ea88e RS |
4528 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
4529 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
4530 | || FETCH_BYTE (pos.bytepos - 1) == '\n') | |
113d9015 | 4531 | ? Qt : Qnil); |
7ab12479 | 4532 | w->force_start = Qt; |
478292ed | 4533 | set_buffer_internal (obuf); |
7ab12479 JB |
4534 | |
4535 | return Qnil; | |
4536 | } | |
b7617575 GM |
4537 | |
4538 | ||
81fe0836 MB |
4539 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
4540 | 0, 1, 0, | |
4541 | "Return the height in lines of the text display area of WINDOW.\n\ | |
4542 | This doesn't include the mode-line (or header-line if any) or any\n\ | |
4543 | partial-height lines in the text display area.") | |
4544 | (window) | |
4545 | Lisp_Object window; | |
4546 | { | |
4547 | struct window *w = decode_window (window); | |
4548 | int pixel_height = window_box_height (w); | |
4549 | int line_height = pixel_height / CANON_Y_UNIT (XFRAME (w->frame)); | |
4550 | return make_number (line_height); | |
4551 | } | |
4552 | ||
4553 | ||
7ab12479 JB |
4554 | \f |
4555 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
4556 | 1, 1, "P", | |
4557 | "Position point relative to window.\n\ | |
19e3bf0a | 4558 | With no argument, position point at center of window.\n\ |
d81724c7 RS |
4559 | An argument specifies vertical position within the window;\n\ |
4560 | zero means top of window, negative means relative to bottom of window.") | |
7ab12479 | 4561 | (arg) |
b7617575 | 4562 | Lisp_Object arg; |
7ab12479 | 4563 | { |
b7617575 GM |
4564 | struct window *w = XWINDOW (selected_window); |
4565 | int lines, start; | |
540b6aa0 | 4566 | Lisp_Object window; |
7ab12479 | 4567 | |
b7617575 | 4568 | window = selected_window; |
7ab12479 JB |
4569 | start = marker_position (w->start); |
4570 | if (start < BEGV || start > ZV) | |
4571 | { | |
b7617575 | 4572 | int height = window_internal_height (w); |
cd2be1dd | 4573 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4574 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4575 | w->start_at_line_beg = Fbolp (); |
4576 | w->force_start = Qt; | |
4577 | } | |
4578 | else | |
b73ea88e | 4579 | Fgoto_char (w->start); |
7ab12479 | 4580 | |
b7617575 GM |
4581 | lines = displayed_window_lines (w); |
4582 | if (NILP (arg)) | |
4583 | XSETFASTINT (arg, lines / 2); | |
4584 | else | |
4585 | { | |
4586 | arg = Fprefix_numeric_value (arg); | |
4587 | if (XINT (arg) < 0) | |
4588 | XSETINT (arg, XINT (arg) + lines); | |
4589 | } | |
4590 | ||
163784df MB |
4591 | if (w->vscroll) |
4592 | /* Skip past a partially visible first line. */ | |
4593 | XSETINT (arg, XINT (arg) + 1); | |
4594 | ||
540b6aa0 | 4595 | return Fvertical_motion (arg, window); |
7ab12479 | 4596 | } |
5500c422 GM |
4597 | |
4598 | ||
7ab12479 | 4599 | \f |
5500c422 GM |
4600 | /*********************************************************************** |
4601 | Window Configuration | |
4602 | ***********************************************************************/ | |
4603 | ||
7ab12479 JB |
4604 | struct save_window_data |
4605 | { | |
f5ccc0cc | 4606 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4607 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4608 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4609 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4610 | Lisp_Object selected_frame; |
7ab12479 JB |
4611 | Lisp_Object current_window; |
4612 | Lisp_Object current_buffer; | |
4613 | Lisp_Object minibuf_scroll_window; | |
4614 | Lisp_Object root_window; | |
bdc727bf | 4615 | Lisp_Object focus_frame; |
756b6edc RS |
4616 | /* Record the values of window-min-width and window-min-height |
4617 | so that window sizes remain consistent with them. */ | |
4618 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4619 | /* A vector, each of whose elements is a struct saved_window |
4620 | for one window. */ | |
7ab12479 JB |
4621 | Lisp_Object saved_windows; |
4622 | }; | |
ff06df24 | 4623 | |
cbff28e8 | 4624 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 4625 | struct saved_window |
ea68264b GM |
4626 | { |
4627 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
4628 | EMACS_INT size_from_Lisp_Vector_struct; | |
4629 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 4630 | |
ea68264b GM |
4631 | Lisp_Object window; |
4632 | Lisp_Object buffer, start, pointm, mark; | |
4633 | Lisp_Object left, top, width, height, hscroll, min_hscroll; | |
4634 | Lisp_Object parent, prev; | |
4635 | Lisp_Object start_at_line_beg; | |
4636 | Lisp_Object display_table; | |
4637 | Lisp_Object orig_top, orig_height; | |
4638 | }; | |
4639 | ||
4640 | #define SAVED_WINDOW_VECTOR_SIZE 17 /* Arg to Fmake_vector */ | |
7ab12479 JB |
4641 | |
4642 | #define SAVED_WINDOW_N(swv,n) \ | |
4643 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4644 | ||
4645 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
cbff28e8 | 4646 | "Return t if OBJECT is a window-configuration object.") |
413430c5 EN |
4647 | (object) |
4648 | Lisp_Object object; | |
7ab12479 | 4649 | { |
413430c5 | 4650 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4651 | return Qt; |
4652 | return Qnil; | |
4653 | } | |
4654 | ||
3f8ab7bd RS |
4655 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
4656 | "Return the frame that CONFIG, a window-configuration object, is about.") | |
4657 | (config) | |
4658 | Lisp_Object config; | |
4659 | { | |
4660 | register struct save_window_data *data; | |
4661 | struct Lisp_Vector *saved_windows; | |
4662 | ||
4663 | if (! WINDOW_CONFIGURATIONP (config)) | |
4664 | wrong_type_argument (Qwindow_configuration_p, config); | |
4665 | ||
4666 | data = (struct save_window_data *) XVECTOR (config); | |
4667 | saved_windows = XVECTOR (data->saved_windows); | |
4668 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4669 | } | |
4670 | ||
d5b2799e RS |
4671 | DEFUN ("set-window-configuration", Fset_window_configuration, |
4672 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
4673 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
4674 | CONFIGURATION must be a value previously returned\n\ | |
3f8ab7bd RS |
4675 | by `current-window-configuration' (which see).\n\ |
4676 | If CONFIGURATION was made from a frame that is now deleted,\n\ | |
4677 | only frame-independent values can be restored. In this case,\n\ | |
4678 | the return value is nil. Otherwise the value is t.") | |
4679 | (configuration) | |
2f83aebe | 4680 | Lisp_Object configuration; |
7ab12479 | 4681 | { |
7ab12479 JB |
4682 | register struct save_window_data *data; |
4683 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4684 | Lisp_Object new_current_buffer; |
fd482be5 | 4685 | Lisp_Object frame; |
44fa5b1e | 4686 | FRAME_PTR f; |
d2b35234 | 4687 | int old_point = -1; |
7ab12479 | 4688 | |
017b2bad | 4689 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4690 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4691 | |
2f83aebe | 4692 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4693 | saved_windows = XVECTOR (data->saved_windows); |
4694 | ||
7ab12479 | 4695 | new_current_buffer = data->current_buffer; |
265a9e55 | 4696 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4697 | new_current_buffer = Qnil; |
d2b35234 RS |
4698 | else |
4699 | { | |
4700 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4701 | old_point = PT; | |
4702 | } | |
7ab12479 | 4703 | |
fd482be5 JB |
4704 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4705 | f = XFRAME (frame); | |
aa35ba9e | 4706 | |
fd482be5 JB |
4707 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4708 | However, there is other stuff we should still try to do below. */ | |
4709 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4710 | { |
fd482be5 JB |
4711 | register struct window *w; |
4712 | register struct saved_window *p; | |
5500c422 GM |
4713 | struct window *root_window; |
4714 | struct window **leaf_windows; | |
4715 | int n_leaf_windows; | |
c4280705 | 4716 | int k, i, n; |
fd482be5 JB |
4717 | |
4718 | /* If the frame has been resized since this window configuration was | |
4719 | made, we change the frame to the size specified in the | |
4720 | configuration, restore the configuration, and then resize it | |
4721 | back. We keep track of the prevailing height in these variables. */ | |
4722 | int previous_frame_height = FRAME_HEIGHT (f); | |
4723 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4724 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4725 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4726 | |
d2b35234 RS |
4727 | /* The mouse highlighting code could get screwed up |
4728 | if it runs during this. */ | |
4729 | BLOCK_INPUT; | |
4730 | ||
fd482be5 JB |
4731 | if (XFASTINT (data->frame_height) != previous_frame_height |
4732 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4733 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4734 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4735 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4736 | if (XFASTINT (data->frame_menu_bar_lines) |
4737 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4738 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4739 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4740 | if (XFASTINT (data->frame_tool_bar_lines) |
4741 | != previous_frame_tool_bar_lines) | |
4742 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4743 | #endif |
217f2871 | 4744 | #endif |
fd482be5 | 4745 | |
719eaeb1 GM |
4746 | /* "Swap out" point from the selected window |
4747 | into its buffer. We do this now, before | |
4748 | restoring the window contents, and prevent it from | |
4749 | being done later on when we select a new window. */ | |
596ae0cf RS |
4750 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4751 | { | |
4752 | w = XWINDOW (selected_window); | |
4753 | set_marker_both (w->pointm, | |
4754 | w->buffer, | |
4755 | BUF_PT (XBUFFER (w->buffer)), | |
4756 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4757 | } | |
4758 | ||
fd482be5 | 4759 | windows_or_buffers_changed++; |
29aeee73 | 4760 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4761 | |
5500c422 GM |
4762 | /* Problem: Freeing all matrices and later allocating them again |
4763 | is a serious redisplay flickering problem. What we would | |
4764 | really like to do is to free only those matrices not reused | |
4765 | below. */ | |
4766 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4767 | leaf_windows | |
4768 | = (struct window **) alloca (count_windows (root_window) | |
4769 | * sizeof (struct window *)); | |
4770 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4771 | ||
756b6edc RS |
4772 | /* Temporarily avoid any problems with windows that are smaller |
4773 | than they are supposed to be. */ | |
4774 | window_min_height = 1; | |
4775 | window_min_width = 1; | |
4776 | ||
fd482be5 JB |
4777 | /* Kludge Alert! |
4778 | Mark all windows now on frame as "deleted". | |
4779 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4780 | |
fd482be5 JB |
4781 | Save their current buffers in their height fields, since we may |
4782 | need it later, if a buffer saved in the configuration is now | |
4783 | dead. */ | |
4784 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4785 | ||
4786 | for (k = 0; k < saved_windows->size; k++) | |
4787 | { | |
4788 | p = SAVED_WINDOW_N (saved_windows, k); | |
4789 | w = XWINDOW (p->window); | |
4790 | w->next = Qnil; | |
7ab12479 | 4791 | |
fd482be5 JB |
4792 | if (!NILP (p->parent)) |
4793 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4794 | XFASTINT (p->parent))->window; | |
4795 | else | |
4796 | w->parent = Qnil; | |
7ab12479 | 4797 | |
fd482be5 | 4798 | if (!NILP (p->prev)) |
7ab12479 | 4799 | { |
fd482be5 JB |
4800 | w->prev = SAVED_WINDOW_N (saved_windows, |
4801 | XFASTINT (p->prev))->window; | |
4802 | XWINDOW (w->prev)->next = p->window; | |
4803 | } | |
4804 | else | |
4805 | { | |
4806 | w->prev = Qnil; | |
4807 | if (!NILP (w->parent)) | |
4808 | { | |
4809 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4810 | { | |
4811 | XWINDOW (w->parent)->vchild = p->window; | |
4812 | XWINDOW (w->parent)->hchild = Qnil; | |
4813 | } | |
4814 | else | |
4815 | { | |
4816 | XWINDOW (w->parent)->hchild = p->window; | |
4817 | XWINDOW (w->parent)->vchild = Qnil; | |
4818 | } | |
4819 | } | |
4820 | } | |
4821 | ||
4822 | /* If we squirreled away the buffer in the window's height, | |
4823 | restore it now. */ | |
017b2bad | 4824 | if (BUFFERP (w->height)) |
fd482be5 JB |
4825 | w->buffer = w->height; |
4826 | w->left = p->left; | |
4827 | w->top = p->top; | |
4828 | w->width = p->width; | |
4829 | w->height = p->height; | |
4830 | w->hscroll = p->hscroll; | |
ea68264b | 4831 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 4832 | w->display_table = p->display_table; |
a1d58e5b GM |
4833 | w->orig_top = p->orig_top; |
4834 | w->orig_height = p->orig_height; | |
d834a2e9 | 4835 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4836 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4837 | |
4838 | /* Reinstall the saved buffer and pointers into it. */ | |
4839 | if (NILP (p->buffer)) | |
4840 | w->buffer = p->buffer; | |
4841 | else | |
4842 | { | |
4843 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4844 | /* If saved buffer is alive, install it. */ | |
4845 | { | |
4846 | w->buffer = p->buffer; | |
4847 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4848 | set_marker_restricted (w->start, p->start, w->buffer); |
4849 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4850 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4851 | p->mark, w->buffer); |
fd482be5 JB |
4852 | |
4853 | /* As documented in Fcurrent_window_configuration, don't | |
4854 | save the location of point in the buffer which was current | |
4855 | when the window configuration was recorded. */ | |
6b54027b RS |
4856 | if (!EQ (p->buffer, new_current_buffer) |
4857 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4858 | Fgoto_char (w->pointm); |
4859 | } | |
52a68e98 RS |
4860 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4861 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4862 | { |
fd482be5 JB |
4863 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4864 | /* This will set the markers to beginning of visible | |
4865 | range. */ | |
4866 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4867 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4868 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4869 | } |
4870 | else | |
fd482be5 | 4871 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4872 | are real. */ |
7ab12479 | 4873 | { |
fd482be5 JB |
4874 | /* Set window markers at start of visible range. */ |
4875 | if (XMARKER (w->start)->buffer == 0) | |
4876 | set_marker_restricted (w->start, make_number (0), | |
4877 | w->buffer); | |
4878 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4879 | set_marker_restricted_both (w->pointm, w->buffer, |
4880 | BUF_PT (XBUFFER (w->buffer)), | |
4881 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4882 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4883 | } |
4884 | } | |
4885 | } | |
9ace597f | 4886 | |
fd482be5 | 4887 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
4888 | /* Prevent "swapping out point" in the old selected window |
4889 | using the buffer that has been restored into it. | |
4890 | That swapping out has already been done, | |
4891 | near the beginning of this function. */ | |
4892 | selected_window = Qnil; | |
fd482be5 | 4893 | Fselect_window (data->current_window); |
396a830c RS |
4894 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
4895 | = selected_window; | |
7ab12479 | 4896 | |
db269683 | 4897 | if (NILP (data->focus_frame) |
017b2bad | 4898 | || (FRAMEP (data->focus_frame) |
db269683 JB |
4899 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
4900 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 4901 | |
fd482be5 JB |
4902 | #if 0 /* I don't understand why this is needed, and it causes problems |
4903 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 4904 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
4905 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
4906 | Qnil, 0); | |
fd482be5 JB |
4907 | #endif |
4908 | ||
4909 | /* Set the screen height to the value it had before this function. */ | |
4910 | if (previous_frame_height != FRAME_HEIGHT (f) | |
4911 | || previous_frame_width != FRAME_WIDTH (f)) | |
4912 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 4913 | 0, 0, 0); |
e3678b64 | 4914 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 4915 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
4916 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
4917 | make_number (0)); | |
4314246f | 4918 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4919 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
4920 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
4921 | make_number (0)); | |
4314246f | 4922 | #endif |
217f2871 | 4923 | #endif |
d2b35234 | 4924 | |
5500c422 | 4925 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
4926 | for (i = n = 0; i < n_leaf_windows; ++i) |
4927 | { | |
4928 | if (NILP (leaf_windows[i]->buffer)) | |
4929 | { | |
4930 | /* Assert it's not reused as a combination. */ | |
4931 | xassert (NILP (leaf_windows[i]->hchild) | |
4932 | && NILP (leaf_windows[i]->vchild)); | |
4933 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
4934 | } |
4935 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
4936 | ++n; | |
4937 | } | |
4938 | ||
4939 | /* If more than one window shows the new and old current buffer, | |
4940 | don't try to preserve point in that buffer. */ | |
4941 | if (old_point > 0 && n > 1) | |
4942 | old_point = -1; | |
5500c422 GM |
4943 | |
4944 | adjust_glyphs (f); | |
4945 | ||
d2b35234 | 4946 | UNBLOCK_INPUT; |
756b6edc | 4947 | |
478292ed RS |
4948 | /* Fselect_window will have made f the selected frame, so we |
4949 | reselect the proper frame here. Fhandle_switch_frame will change the | |
4950 | selected window too, but that doesn't make the call to | |
4951 | Fselect_window above totally superfluous; it still sets f's | |
4952 | selected window. */ | |
4953 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
4954 | do_switch_frame (data->selected_frame, Qnil, 0); | |
4955 | ||
4956 | if (! NILP (Vwindow_configuration_change_hook) | |
4957 | && ! NILP (Vrun_hooks)) | |
4958 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4959 | } | |
bdc727bf JB |
4960 | |
4961 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
4962 | { |
4963 | Fset_buffer (new_current_buffer); | |
4964 | ||
4965 | /* If the buffer that is current now is the same | |
4966 | that was current before setting the window configuration, | |
4967 | don't alter its PT. */ | |
4968 | if (old_point >= 0) | |
4969 | SET_PT (old_point); | |
4970 | } | |
bdc727bf | 4971 | |
478292ed RS |
4972 | /* Restore the minimum heights recorded in the configuration. */ |
4973 | window_min_height = XINT (data->min_height); | |
4974 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 4975 | |
478292ed | 4976 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 4977 | |
3f8ab7bd | 4978 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
4979 | } |
4980 | ||
44fa5b1e | 4981 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
4982 | by setting their buffers to nil. */ |
4983 | ||
fd482be5 | 4984 | void |
7ab12479 JB |
4985 | delete_all_subwindows (w) |
4986 | register struct window *w; | |
4987 | { | |
265a9e55 | 4988 | if (!NILP (w->next)) |
7ab12479 | 4989 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 4990 | if (!NILP (w->vchild)) |
7ab12479 | 4991 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 4992 | if (!NILP (w->hchild)) |
7ab12479 | 4993 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
4994 | |
4995 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
4996 | ||
86e48436 RS |
4997 | if (!NILP (w->buffer)) |
4998 | unshow_buffer (w); | |
4999 | ||
605be8af JB |
5000 | /* We set all three of these fields to nil, to make sure that we can |
5001 | distinguish this dead window from any live window. Live leaf | |
5002 | windows will have buffer set, and combination windows will have | |
5003 | vchild or hchild set. */ | |
5004 | w->buffer = Qnil; | |
5005 | w->vchild = Qnil; | |
5006 | w->hchild = Qnil; | |
acf70840 GM |
5007 | |
5008 | Vwindow_list = Qnil; | |
7ab12479 JB |
5009 | } |
5010 | \f | |
5011 | static int | |
5012 | count_windows (window) | |
5013 | register struct window *window; | |
5014 | { | |
5015 | register int count = 1; | |
265a9e55 | 5016 | if (!NILP (window->next)) |
7ab12479 | 5017 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5018 | if (!NILP (window->vchild)) |
7ab12479 | 5019 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5020 | if (!NILP (window->hchild)) |
7ab12479 JB |
5021 | count += count_windows (XWINDOW (window->hchild)); |
5022 | return count; | |
5023 | } | |
5024 | ||
5500c422 GM |
5025 | |
5026 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
5027 | Value is last index + 1. */ | |
5028 | ||
5029 | static int | |
5030 | get_leaf_windows (w, flat, i) | |
5031 | struct window *w; | |
5032 | struct window **flat; | |
5033 | int i; | |
5034 | { | |
5035 | while (w) | |
5036 | { | |
5037 | if (!NILP (w->hchild)) | |
5038 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5039 | else if (!NILP (w->vchild)) | |
5040 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
5041 | else | |
5042 | flat[i++] = w; | |
5043 | ||
5044 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5045 | } | |
5046 | ||
5047 | return i; | |
5048 | } | |
5049 | ||
5050 | ||
5051 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5052 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5053 | can be returned. */ | |
5054 | ||
5055 | struct glyph * | |
5056 | get_phys_cursor_glyph (w) | |
5057 | struct window *w; | |
5058 | { | |
5059 | struct glyph_row *row; | |
5060 | struct glyph *glyph; | |
5061 | ||
5062 | if (w->phys_cursor.vpos >= 0 | |
5063 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5064 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5065 | row->enabled_p) | |
5066 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5067 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5068 | else | |
5069 | glyph = NULL; | |
5070 | ||
5071 | return glyph; | |
5072 | } | |
5073 | ||
5074 | ||
7ab12479 JB |
5075 | static int |
5076 | save_window_save (window, vector, i) | |
5077 | Lisp_Object window; | |
5078 | struct Lisp_Vector *vector; | |
5079 | int i; | |
5080 | { | |
5081 | register struct saved_window *p; | |
5082 | register struct window *w; | |
5083 | register Lisp_Object tem; | |
5084 | ||
265a9e55 | 5085 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5086 | { |
5087 | p = SAVED_WINDOW_N (vector, i); | |
5088 | w = XWINDOW (window); | |
5089 | ||
d834a2e9 | 5090 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
5091 | p->window = window; |
5092 | p->buffer = w->buffer; | |
5093 | p->left = w->left; | |
5094 | p->top = w->top; | |
5095 | p->width = w->width; | |
5096 | p->height = w->height; | |
5097 | p->hscroll = w->hscroll; | |
ea68264b | 5098 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5099 | p->display_table = w->display_table; |
a1d58e5b GM |
5100 | p->orig_top = w->orig_top; |
5101 | p->orig_height = w->orig_height; | |
265a9e55 | 5102 | if (!NILP (w->buffer)) |
7ab12479 JB |
5103 | { |
5104 | /* Save w's value of point in the window configuration. | |
5105 | If w is the selected window, then get the value of point | |
5106 | from the buffer; pointm is garbage in the selected window. */ | |
5107 | if (EQ (window, selected_window)) | |
5108 | { | |
5109 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5110 | set_marker_both (p->pointm, w->buffer, |
5111 | BUF_PT (XBUFFER (w->buffer)), | |
5112 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5113 | } |
5114 | else | |
eeb82665 | 5115 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5116 | |
eeb82665 | 5117 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5118 | p->start_at_line_beg = w->start_at_line_beg; |
5119 | ||
5120 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 5121 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5122 | } |
5123 | else | |
5124 | { | |
5125 | p->pointm = Qnil; | |
5126 | p->start = Qnil; | |
5127 | p->mark = Qnil; | |
5128 | p->start_at_line_beg = Qnil; | |
5129 | } | |
5130 | ||
265a9e55 | 5131 | if (NILP (w->parent)) |
7ab12479 JB |
5132 | p->parent = Qnil; |
5133 | else | |
5134 | p->parent = XWINDOW (w->parent)->temslot; | |
5135 | ||
265a9e55 | 5136 | if (NILP (w->prev)) |
7ab12479 JB |
5137 | p->prev = Qnil; |
5138 | else | |
5139 | p->prev = XWINDOW (w->prev)->temslot; | |
5140 | ||
265a9e55 | 5141 | if (!NILP (w->vchild)) |
7ab12479 | 5142 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5143 | if (!NILP (w->hchild)) |
7ab12479 JB |
5144 | i = save_window_save (w->hchild, vector, i); |
5145 | } | |
5146 | ||
5147 | return i; | |
5148 | } | |
5149 | ||
a0d76c27 EN |
5150 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
5151 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
5152 | "Return an object representing the current window configuration of FRAME.\n\ |
5153 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
5154 | This describes the number of windows, their sizes and current buffers,\n\ |
5155 | and for each displayed buffer, where display starts, and the positions of\n\ | |
5156 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
5157 | its value is -not- saved.\n\ |
5158 | This also records the currently selected frame, and FRAME's focus\n\ | |
5159 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
5160 | (frame) |
5161 | Lisp_Object frame; | |
7ab12479 JB |
5162 | { |
5163 | register Lisp_Object tem; | |
5164 | register int n_windows; | |
5165 | register struct save_window_data *data; | |
da2792e0 | 5166 | register struct Lisp_Vector *vec; |
7ab12479 | 5167 | register int i; |
44fa5b1e | 5168 | FRAME_PTR f; |
43bad991 | 5169 | |
44fa5b1e | 5170 | if (NILP (frame)) |
1ae1a37d GM |
5171 | frame = selected_frame; |
5172 | CHECK_LIVE_FRAME (frame, 0); | |
5173 | f = XFRAME (frame); | |
7ab12479 | 5174 | |
44fa5b1e | 5175 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
5176 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
5177 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
5178 | vec->contents[i] = Qnil; | |
5179 | vec->size = VECSIZE (struct save_window_data); | |
5180 | data = (struct save_window_data *)vec; | |
5181 | ||
d834a2e9 KH |
5182 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
5183 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
5184 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 5185 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 5186 | data->selected_frame = selected_frame; |
44fa5b1e | 5187 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5188 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 5189 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 5190 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5191 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
5192 | XSETINT (data->min_height, window_min_height); |
5193 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5194 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5195 | data->saved_windows = tem; | |
5196 | for (i = 0; i < n_windows; i++) | |
5197 | XVECTOR (tem)->contents[i] | |
5198 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 5199 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5200 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5201 | return (tem); |
5202 | } | |
5203 | ||
5204 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
5205 | 0, UNEVALLED, 0, | |
5206 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
5207 | Restore which buffer appears in which window, where display starts,\n\ |
5208 | and the value of point and mark for each window.\n\ | |
8ed92cf0 | 5209 | Also restore the choice of selected window.\n\ |
eb16ec06 | 5210 | Also restore which buffer is current.\n\ |
7ab12479 JB |
5211 | Does not restore the value of point in current buffer.") |
5212 | (args) | |
5213 | Lisp_Object args; | |
5214 | { | |
5215 | register Lisp_Object val; | |
5216 | register int count = specpdl_ptr - specpdl; | |
5217 | ||
5218 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5219 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5220 | val = Fprogn (args); |
5221 | return unbind_to (count, val); | |
5222 | } | |
5500c422 GM |
5223 | |
5224 | \f | |
5225 | /*********************************************************************** | |
5226 | Marginal Areas | |
5227 | ***********************************************************************/ | |
5228 | ||
5229 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5230 | 2, 3, 0, |
5500c422 | 5231 | "Set width of marginal areas of window WINDOW.\n\ |
a7bdfc08 | 5232 | If window is nil, set margins of the currently selected window.\n\ |
5500c422 GM |
5233 | First parameter LEFT-WIDTH specifies the number of character\n\ |
5234 | cells to reserve for the left marginal area. Second parameter\n\ | |
5235 | RIGHT-WIDTH does the same for the right marginal area.\n\ | |
5236 | A nil width parameter means no margin.") | |
cfa22082 | 5237 | (window, left, right) |
5500c422 GM |
5238 | Lisp_Object window, left, right; |
5239 | { | |
5240 | struct window *w = decode_window (window); | |
5500c422 GM |
5241 | |
5242 | if (!NILP (left)) | |
cfa22082 | 5243 | CHECK_NUMBER_OR_FLOAT (left, 1); |
5500c422 | 5244 | if (!NILP (right)) |
cfa22082 | 5245 | CHECK_NUMBER_OR_FLOAT (right, 2); |
5500c422 GM |
5246 | |
5247 | /* Check widths < 0 and translate a zero width to nil. | |
5248 | Margins that are too wide have to be checked elsewhere. */ | |
5249 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5250 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5251 | XSETFASTINT (left, 0); |
5252 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5253 | left = Qnil; | |
5254 | ||
5255 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 5256 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5257 | XSETFASTINT (right, 0); |
5258 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5259 | right = Qnil; | |
5260 | ||
5261 | w->left_margin_width = left; | |
5262 | w->right_margin_width = right; | |
5263 | ||
5264 | ++windows_or_buffers_changed; | |
5265 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5266 | return Qnil; | |
5267 | } | |
5268 | ||
5269 | ||
5270 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5271 | 0, 1, 0, | |
5272 | "Get width of marginal areas of window WINDOW.\n\ | |
5273 | If WINDOW is omitted or nil, use the currently selected window.\n\ | |
5274 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).\n\ | |
5275 | If a marginal area does not exist, its width will be returned\n\ | |
5276 | as nil.") | |
5277 | (window) | |
5278 | Lisp_Object window; | |
5279 | { | |
5280 | struct window *w = decode_window (window); | |
5281 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5282 | } | |
5283 | ||
5284 | ||
7ab12479 | 5285 | \f |
5500c422 GM |
5286 | /*********************************************************************** |
5287 | Smooth scrolling | |
5288 | ***********************************************************************/ | |
5289 | ||
5290 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
5291 | "Return the amount by which WINDOW is scrolled vertically.\n\ | |
5292 | Use the selected window if WINDOW is nil or omitted.\n\ | |
5293 | Value is a multiple of the canonical character height of WINDOW.") | |
5294 | (window) | |
5295 | Lisp_Object window; | |
5296 | { | |
47004952 | 5297 | Lisp_Object result; |
5500c422 GM |
5298 | struct frame *f; |
5299 | struct window *w; | |
5300 | ||
5301 | if (NILP (window)) | |
5302 | window = selected_window; | |
47004952 GM |
5303 | else |
5304 | CHECK_WINDOW (window, 0); | |
5500c422 GM |
5305 | w = XWINDOW (window); |
5306 | f = XFRAME (w->frame); | |
5307 | ||
5308 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5309 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5310 | else |
47004952 GM |
5311 | result = make_number (0); |
5312 | return result; | |
5500c422 GM |
5313 | } |
5314 | ||
5315 | ||
5316 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 GM |
5317 | 2, 2, 0, |
5318 | "Set amount by which WINDOW should be scrolled vertically to VSCROLL.\n\ | |
5500c422 | 5319 | WINDOW nil or omitted means use the selected window. VSCROLL is a\n\ |
47004952 GM |
5320 | non-negative multiple of the canonical character height of WINDOW.") |
5321 | (window, vscroll) | |
5322 | Lisp_Object window, vscroll; | |
5500c422 GM |
5323 | { |
5324 | struct window *w; | |
5325 | struct frame *f; | |
5326 | ||
5500c422 GM |
5327 | if (NILP (window)) |
5328 | window = selected_window; | |
47004952 GM |
5329 | else |
5330 | CHECK_WINDOW (window, 0); | |
5331 | CHECK_NUMBER_OR_FLOAT (vscroll, 1); | |
5332 | ||
5500c422 GM |
5333 | w = XWINDOW (window); |
5334 | f = XFRAME (w->frame); | |
5335 | ||
5336 | if (FRAME_WINDOW_P (f)) | |
5337 | { | |
5338 | int old_dy = w->vscroll; | |
47004952 GM |
5339 | |
5340 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5341 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5342 | |
5343 | /* Adjust glyph matrix of the frame if the virtual display | |
5344 | area becomes larger than before. */ | |
5345 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5346 | adjust_glyphs (f); | |
5347 | ||
5348 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5349 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5350 | } |
5351 | ||
47004952 | 5352 | return Fwindow_vscroll (window); |
5500c422 GM |
5353 | } |
5354 | ||
7bbb5782 GM |
5355 | \f |
5356 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5357 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5358 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5359 | |
5360 | void | |
f95464e4 | 5361 | foreach_window (f, fn, user_data) |
7bbb5782 | 5362 | struct frame *f; |
f95464e4 GM |
5363 | int (* fn) P_ ((struct window *, void *)); |
5364 | void *user_data; | |
7bbb5782 | 5365 | { |
f95464e4 | 5366 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5367 | } |
5368 | ||
5369 | ||
5370 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5371 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5372 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5373 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5374 | |
67492200 | 5375 | static int |
f95464e4 | 5376 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5377 | struct window *w; |
f95464e4 GM |
5378 | int (* fn) P_ ((struct window *, void *)); |
5379 | void *user_data; | |
7bbb5782 | 5380 | { |
67492200 GM |
5381 | int cont; |
5382 | ||
5383 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5384 | { |
5385 | if (!NILP (w->hchild)) | |
f95464e4 | 5386 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5387 | else if (!NILP (w->vchild)) |
f95464e4 | 5388 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
0f532a9a GM |
5389 | else |
5390 | cont = fn (w, user_data); | |
7bbb5782 GM |
5391 | |
5392 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5393 | } | |
67492200 GM |
5394 | |
5395 | return cont; | |
7bbb5782 GM |
5396 | } |
5397 | ||
5398 | ||
5399 | /* Freeze or unfreeze the window start of W if unless it is a | |
f95464e4 | 5400 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5401 | the window start. */ |
5402 | ||
67492200 | 5403 | static int |
7bbb5782 GM |
5404 | freeze_window_start (w, freeze_p) |
5405 | struct window *w; | |
f95464e4 | 5406 | void *freeze_p; |
7bbb5782 GM |
5407 | { |
5408 | if (w == XWINDOW (selected_window) | |
5409 | || MINI_WINDOW_P (w) | |
5410 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5411 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5412 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5413 | freeze_p = NULL; |
7bbb5782 | 5414 | |
f95464e4 | 5415 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5416 | return 1; |
7bbb5782 GM |
5417 | } |
5418 | ||
5419 | ||
5420 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5421 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5422 | means freeze the window start. */ | |
5423 | ||
5424 | void | |
5425 | freeze_window_starts (f, freeze_p) | |
5426 | struct frame *f; | |
5427 | int freeze_p; | |
5428 | { | |
cbccabec | 5429 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5430 | } |
5500c422 GM |
5431 | |
5432 | \f | |
5433 | /*********************************************************************** | |
5434 | Initialization | |
5435 | ***********************************************************************/ | |
5436 | ||
cbff28e8 RS |
5437 | /* Return 1 if window configurations C1 and C2 |
5438 | describe the same state of affairs. This is used by Fequal. */ | |
5439 | ||
5440 | int | |
2f8274be | 5441 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5442 | Lisp_Object c1, c2; |
2f8274be | 5443 | int ignore_positions; |
cbff28e8 RS |
5444 | { |
5445 | register struct save_window_data *d1, *d2; | |
5446 | struct Lisp_Vector *sw1, *sw2; | |
5447 | int i; | |
5448 | ||
4d3edcb4 GM |
5449 | if (!WINDOW_CONFIGURATIONP (c1)) |
5450 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5451 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5452 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5453 | ||
cbff28e8 RS |
5454 | d1 = (struct save_window_data *) XVECTOR (c1); |
5455 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5456 | sw1 = XVECTOR (d1->saved_windows); | |
5457 | sw2 = XVECTOR (d2->saved_windows); | |
5458 | ||
5459 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5460 | return 0; | |
5461 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5462 | return 0; | |
5463 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5464 | return 0; | |
5465 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5466 | return 0; | |
5467 | /* Don't compare the current_window field directly. | |
5468 | Instead see w1_is_current and w2_is_current, below. */ | |
5469 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5470 | return 0; | |
2f8274be RS |
5471 | if (! ignore_positions) |
5472 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5473 | return 0; | |
cbff28e8 RS |
5474 | /* Don't compare the root_window field. |
5475 | We don't require the two configurations | |
5476 | to use the same window object, | |
5477 | and the two root windows must be equivalent | |
5478 | if everything else compares equal. */ | |
5479 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5480 | return 0; | |
5481 | if (! EQ (d1->min_width, d2->min_width)) | |
5482 | return 0; | |
5483 | if (! EQ (d1->min_height, d2->min_height)) | |
5484 | return 0; | |
5485 | ||
5486 | /* Verify that the two confis have the same number of windows. */ | |
5487 | if (sw1->size != sw2->size) | |
5488 | return 0; | |
5489 | ||
5490 | for (i = 0; i < sw1->size; i++) | |
5491 | { | |
5492 | struct saved_window *p1, *p2; | |
5493 | int w1_is_current, w2_is_current; | |
5494 | ||
5495 | p1 = SAVED_WINDOW_N (sw1, i); | |
5496 | p2 = SAVED_WINDOW_N (sw2, i); | |
5497 | ||
5498 | /* Verify that the current windows in the two | |
5499 | configurations correspond to each other. */ | |
5500 | w1_is_current = EQ (d1->current_window, p1->window); | |
5501 | w2_is_current = EQ (d2->current_window, p2->window); | |
5502 | ||
5503 | if (w1_is_current != w2_is_current) | |
5504 | return 0; | |
5505 | ||
5506 | /* Verify that the corresponding windows do match. */ | |
5507 | if (! EQ (p1->buffer, p2->buffer)) | |
5508 | return 0; | |
5509 | if (! EQ (p1->left, p2->left)) | |
5510 | return 0; | |
5511 | if (! EQ (p1->top, p2->top)) | |
5512 | return 0; | |
5513 | if (! EQ (p1->width, p2->width)) | |
5514 | return 0; | |
5515 | if (! EQ (p1->height, p2->height)) | |
5516 | return 0; | |
cbff28e8 RS |
5517 | if (! EQ (p1->display_table, p2->display_table)) |
5518 | return 0; | |
5519 | if (! EQ (p1->parent, p2->parent)) | |
5520 | return 0; | |
5521 | if (! EQ (p1->prev, p2->prev)) | |
5522 | return 0; | |
2f8274be RS |
5523 | if (! ignore_positions) |
5524 | { | |
5525 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5526 | return 0; | |
ea68264b GM |
5527 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
5528 | return 0; | |
2f8274be RS |
5529 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
5530 | return 0; | |
5531 | if (NILP (Fequal (p1->start, p2->start))) | |
5532 | return 0; | |
5533 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5534 | return 0; | |
5535 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5536 | return 0; | |
5537 | } | |
cbff28e8 RS |
5538 | } |
5539 | ||
5540 | return 1; | |
5541 | } | |
2f8274be RS |
5542 | |
5543 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5544 | Scompare_window_configurations, 2, 2, 0, | |
5545 | "Compare two window configurations as regards the structure of windows.\n\ | |
5546 | This function ignores details such as the values of point and mark\n\ | |
5547 | and scrolling positions.") | |
5548 | (x, y) | |
5549 | Lisp_Object x, y; | |
5550 | { | |
5551 | if (compare_window_configurations (x, y, 1)) | |
5552 | return Qt; | |
5553 | return Qnil; | |
5554 | } | |
cbff28e8 | 5555 | \f |
dfcf069d | 5556 | void |
7ab12479 JB |
5557 | init_window_once () |
5558 | { | |
1ae1a37d GM |
5559 | struct frame *f = make_terminal_frame (); |
5560 | XSETFRAME (selected_frame, f); | |
5561 | Vterminal_frame = selected_frame; | |
5562 | minibuf_window = f->minibuffer_window; | |
5563 | selected_window = f->selected_window; | |
5564 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5565 | |
5566 | window_initialized = 1; | |
7ab12479 JB |
5567 | } |
5568 | ||
67492200 GM |
5569 | void |
5570 | init_window () | |
5571 | { | |
5572 | Vwindow_list = Qnil; | |
5573 | } | |
5574 | ||
dfcf069d | 5575 | void |
7ab12479 JB |
5576 | syms_of_window () |
5577 | { | |
fbad6f9a GM |
5578 | Qleft_bitmap_area = intern ("left-bitmap-area"); |
5579 | staticpro (&Qleft_bitmap_area); | |
5580 | Qright_bitmap_area = intern ("right-bitmap-area"); | |
5581 | staticpro (&Qright_bitmap_area); | |
5582 | ||
8a37516b GM |
5583 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5584 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5585 | |
543f5fb1 RS |
5586 | staticpro (&Qwindow_configuration_change_hook); |
5587 | Qwindow_configuration_change_hook | |
5588 | = intern ("window-configuration-change-hook"); | |
5589 | ||
7ab12479 JB |
5590 | Qwindowp = intern ("windowp"); |
5591 | staticpro (&Qwindowp); | |
5592 | ||
3f8ab7bd RS |
5593 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5594 | staticpro (&Qwindow_configuration_p); | |
5595 | ||
806b4d9b JB |
5596 | Qwindow_live_p = intern ("window-live-p"); |
5597 | staticpro (&Qwindow_live_p); | |
605be8af | 5598 | |
2cccc823 | 5599 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5600 | staticpro (&Qtemp_buffer_show_hook); |
5601 | ||
67492200 GM |
5602 | staticpro (&Vwindow_list); |
5603 | ||
7ab12479 JB |
5604 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
5605 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 5606 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
5607 | Used by `with-output-to-temp-buffer'.\n\ |
5608 | If this function is used, then it must do the entire job of showing\n\ | |
5609 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
5610 | Vtemp_buffer_show_function = Qnil; |
5611 | ||
5612 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
5613 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
5614 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
5615 | that the currently selected window is not acceptable.\n\ | |
5616 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
5617 | work using this function."); | |
5618 | Vdisplay_buffer_function = Qnil; | |
5619 | ||
6529ed87 GM |
5620 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
5621 | "*If non-nil, `display-buffer' should even the window heights.\n\ | |
85d19b32 | 5622 | If nil, `display-buffer' will leave the window configuration alone."); |
6529ed87 GM |
5623 | Veven_window_heights = Qt; |
5624 | ||
7ab12479 JB |
5625 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
5626 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
5627 | Vminibuf_scroll_window = Qnil; | |
5628 | ||
5629 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
5630 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
5631 | Vother_window_scroll_buffer = Qnil; | |
5632 | ||
44fa5b1e | 5633 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 5634 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 5635 | pop_up_frames = 0; |
7ab12479 | 5636 | |
9c3da604 | 5637 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
5372262f | 5638 | "*Non-nil means `display-buffer' should reuse frames.\n\ |
9c3da604 GM |
5639 | If the buffer in question is already displayed in a frame, raise that frame."); |
5640 | display_buffer_reuse_frames = 0; | |
5641 | ||
44fa5b1e | 5642 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 5643 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 5644 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 5645 | \n\ |
44fa5b1e JB |
5646 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
5647 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
5648 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 5649 | |
a90712c2 RS |
5650 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
5651 | "*List of buffer names that should have their own special frames.\n\ | |
5652 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 5653 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 5654 | \n\ |
524580a4 RS |
5655 | An element of the list can be a list instead of just a string.\n\ |
5656 | There are two ways to use a list as an element:\n\ | |
5657 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
5658 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5659 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
5660 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
4caa7448 RS |
5661 | All this is done by the function found in `special-display-function'.\n\ |
5662 | \n\ | |
5663 | If this variable appears \"not to work\", because you add a name to it\n\ | |
5664 | but that buffer still appears in the selected window, look at the\n\ | |
5665 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5666 | Those variables take precedence over this one."); | |
a90712c2 RS |
5667 | Vspecial_display_buffer_names = Qnil; |
5668 | ||
5669 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
5670 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
5671 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
5672 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 5673 | using `special-display-function'.\n\ |
3548e138 | 5674 | \n\ |
524580a4 RS |
5675 | An element of the list can be a list instead of just a string.\n\ |
5676 | There are two ways to use a list as an element:\n\ | |
5677 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
5678 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5679 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
5680 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
4caa7448 RS |
5681 | All this is done by the function found in `special-display-function'.\n\ |
5682 | \n\ | |
5683 | If this variable appears \"not to work\", because you add a regexp to it\n\ | |
5684 | but the matching buffers still appear in the selected window, look at the\n\ | |
5685 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5686 | Those variables take precedence over this one."); | |
a90712c2 RS |
5687 | Vspecial_display_regexps = Qnil; |
5688 | ||
5689 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
5690 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
5691 | It is called with two arguments, the buffer and optional buffer specific\n\ |
5692 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 5693 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 5694 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
5695 | \n\ |
5696 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
5697 | or matches a regexp in `special-display-regexps'."); | |
5698 | Vspecial_display_function = Qnil; | |
5699 | ||
855d8627 RS |
5700 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
5701 | "*List of buffer names that should appear in the selected window.\n\ | |
5702 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
5703 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 5704 | in some other window.\n\ |
855d8627 RS |
5705 | \n\ |
5706 | An element of the list can be a cons cell instead of just a string.\n\ | |
5707 | Then the car must be a string, which specifies the buffer name.\n\ | |
5708 | This is for compatibility with `special-display-buffer-names';\n\ | |
5709 | the cdr of the cons cell is ignored.\n\ | |
5710 | \n\ | |
5711 | See also `same-window-regexps'."); | |
5712 | Vsame_window_buffer_names = Qnil; | |
5713 | ||
5714 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
5715 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
5716 | If a buffer name matches one of these regexps, then displaying it\n\ | |
5717 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
5718 | in the selected window, rather than making it appear in some other window.\n\ | |
5719 | \n\ | |
5720 | An element of the list can be a cons cell instead of just a string.\n\ | |
5721 | Then the car must be a string, which specifies the buffer name.\n\ | |
5722 | This is for compatibility with `special-display-buffer-names';\n\ | |
5723 | the cdr of the cons cell is ignored.\n\ | |
5724 | \n\ | |
5725 | See also `same-window-buffer-names'."); | |
5726 | Vsame_window_regexps = Qnil; | |
5727 | ||
7ab12479 JB |
5728 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
5729 | "*Non-nil means display-buffer should make new windows."); | |
5730 | pop_up_windows = 1; | |
5731 | ||
5732 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
5733 | "*Number of lines of continuity when scrolling by screenfuls."); | |
5734 | next_screen_context_lines = 2; | |
5735 | ||
5736 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
5737 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
5738 | If there is only one window, it is split regardless of this value."); | |
5739 | split_height_threshold = 500; | |
5740 | ||
5741 | DEFVAR_INT ("window-min-height", &window_min_height, | |
5742 | "*Delete any window less than this tall (including its mode line)."); | |
5743 | window_min_height = 4; | |
5744 | ||
5745 | DEFVAR_INT ("window-min-width", &window_min_width, | |
5746 | "*Delete any window less than this wide."); | |
5747 | window_min_width = 10; | |
5748 | ||
5500c422 GM |
5749 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5750 | &Vscroll_preserve_screen_position, | |
9317a85d | 5751 | "*Nonzero means scroll commands move point to keep its screen line unchanged."); |
5500c422 | 5752 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5753 | |
543f5fb1 RS |
5754 | DEFVAR_LISP ("window-configuration-change-hook", |
5755 | &Vwindow_configuration_change_hook, | |
5756 | "Functions to call when window configuration changes.\n\ | |
e3e041eb | 5757 | The selected frame is the one whose configuration has changed."); |
543f5fb1 RS |
5758 | Vwindow_configuration_change_hook = Qnil; |
5759 | ||
7ab12479 JB |
5760 | defsubr (&Sselected_window); |
5761 | defsubr (&Sminibuffer_window); | |
5762 | defsubr (&Swindow_minibuffer_p); | |
5763 | defsubr (&Swindowp); | |
806b4d9b | 5764 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5765 | defsubr (&Spos_visible_in_window_p); |
5766 | defsubr (&Swindow_buffer); | |
5767 | defsubr (&Swindow_height); | |
5768 | defsubr (&Swindow_width); | |
5769 | defsubr (&Swindow_hscroll); | |
5770 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5771 | defsubr (&Swindow_redisplay_end_trigger); |
5772 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5773 | defsubr (&Swindow_edges); |
d5783c40 JB |
5774 | defsubr (&Scoordinates_in_window_p); |
5775 | defsubr (&Swindow_at); | |
7ab12479 JB |
5776 | defsubr (&Swindow_point); |
5777 | defsubr (&Swindow_start); | |
5778 | defsubr (&Swindow_end); | |
5779 | defsubr (&Sset_window_point); | |
5780 | defsubr (&Sset_window_start); | |
5781 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5782 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5783 | defsubr (&Swindow_display_table); |
5784 | defsubr (&Sset_window_display_table); | |
5785 | defsubr (&Snext_window); | |
5786 | defsubr (&Sprevious_window); | |
5787 | defsubr (&Sother_window); | |
5788 | defsubr (&Sget_lru_window); | |
5789 | defsubr (&Sget_largest_window); | |
5790 | defsubr (&Sget_buffer_window); | |
5791 | defsubr (&Sdelete_other_windows); | |
5792 | defsubr (&Sdelete_windows_on); | |
5793 | defsubr (&Sreplace_buffer_in_windows); | |
5794 | defsubr (&Sdelete_window); | |
5795 | defsubr (&Sset_window_buffer); | |
5796 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5797 | defsubr (&Sspecial_display_p); |
5798 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5799 | defsubr (&Sdisplay_buffer); |
5800 | defsubr (&Ssplit_window); | |
5801 | defsubr (&Senlarge_window); | |
5802 | defsubr (&Sshrink_window); | |
5803 | defsubr (&Sscroll_up); | |
5804 | defsubr (&Sscroll_down); | |
5805 | defsubr (&Sscroll_left); | |
5806 | defsubr (&Sscroll_right); | |
ccd0664b | 5807 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5808 | defsubr (&Sscroll_other_window); |
5809 | defsubr (&Srecenter); | |
81fe0836 | 5810 | defsubr (&Swindow_text_height); |
7ab12479 JB |
5811 | defsubr (&Smove_to_window_line); |
5812 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5813 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5814 | defsubr (&Sset_window_configuration); |
5815 | defsubr (&Scurrent_window_configuration); | |
5816 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5817 | defsubr (&Sset_window_margins); |
5818 | defsubr (&Swindow_margins); | |
5819 | defsubr (&Swindow_vscroll); | |
5820 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5821 | defsubr (&Scompare_window_configurations); |
67492200 | 5822 | defsubr (&Swindow_list); |
7ab12479 JB |
5823 | } |
5824 | ||
dfcf069d | 5825 | void |
7ab12479 JB |
5826 | keys_of_window () |
5827 | { | |
5828 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5829 | initial_define_key (control_x_map, '2', "split-window"); | |
5830 | initial_define_key (control_x_map, '0', "delete-window"); | |
5831 | initial_define_key (control_x_map, 'o', "other-window"); | |
5832 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5833 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5834 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5835 | ||
5836 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5837 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5838 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5839 | ||
5840 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5841 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5842 | } |