Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
b0b7ed0e | 3 | Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000, 2001 |
6529ed87 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1113d9db | 10 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 22 | |
18160b98 | 23 | #include <config.h> |
7ab12479 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
3e4731a3 | 26 | #include "keyboard.h" |
e35f6ff7 | 27 | #include "keymap.h" |
44fa5b1e | 28 | #include "frame.h" |
7ab12479 JB |
29 | #include "window.h" |
30 | #include "commands.h" | |
31 | #include "indent.h" | |
32 | #include "termchar.h" | |
33 | #include "disptab.h" | |
dfcf069d | 34 | #include "dispextern.h" |
5500c422 GM |
35 | #include "blockinput.h" |
36 | #include "intervals.h" | |
37 | ||
6d55d620 | 38 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 39 | #include "xterm.h" |
5500c422 | 40 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
41 | #ifdef WINDOWSNT |
42 | #include "w32term.h" | |
43 | #endif | |
1e3c8885 EZ |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #endif | |
1a578e9b AC |
47 | #ifdef macintosh |
48 | #include "macterm.h" | |
49 | #endif | |
5500c422 | 50 | |
7442878f GM |
51 | /* Values returned from coordinates_in_window. */ |
52 | ||
53 | enum window_part | |
54 | { | |
55 | ON_NOTHING, | |
56 | ON_TEXT, | |
57 | ON_MODE_LINE, | |
58 | ON_VERTICAL_BORDER, | |
59 | ON_HEADER_LINE, | |
60 | ON_LEFT_FRINGE, | |
61 | ON_RIGHT_FRINGE | |
62 | }; | |
63 | ||
5500c422 | 64 | |
3f8ab7bd | 65 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
7442878f | 66 | Lisp_Object Qwindow_size_fixed, Qleft_fringe, Qright_fringe; |
233a4a2c | 67 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 68 | |
521b203e | 69 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 70 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 71 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
72 | static int count_windows P_ ((struct window *)); |
73 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
74 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
75 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
76 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 77 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 78 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 79 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 80 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 81 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
86c8e823 | 82 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 83 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 84 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
85 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
86 | Lisp_Object)); | |
67492200 GM |
87 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
88 | Lisp_Object, int)); | |
89 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
90 | Lisp_Object *)); | |
f95464e4 GM |
91 | static int foreach_window_1 P_ ((struct window *, |
92 | int (* fn) (struct window *, void *), | |
93 | void *)); | |
cd2904bd | 94 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 95 | |
b0b7ed0e GM |
96 | /* The value of `window-size-fixed'. */ |
97 | ||
98 | int window_size_fixed; | |
99 | ||
7ab12479 JB |
100 | /* This is the window in which the terminal's cursor should |
101 | be left when nothing is being done with it. This must | |
102 | always be a leaf window, and its buffer is selected by | |
103 | the top level editing loop at the end of each command. | |
104 | ||
105 | This value is always the same as | |
44fa5b1e | 106 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
107 | |
108 | Lisp_Object selected_window; | |
109 | ||
67492200 GM |
110 | /* A list of all windows for use by next_window and Fwindow_list. |
111 | Functions creating or deleting windows should invalidate this cache | |
112 | by setting it to nil. */ | |
113 | ||
114 | Lisp_Object Vwindow_list; | |
115 | ||
5500c422 GM |
116 | /* The mini-buffer window of the selected frame. |
117 | Note that you cannot test for mini-bufferness of an arbitrary window | |
118 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 119 | the selected window. */ |
5500c422 | 120 | |
7ab12479 JB |
121 | Lisp_Object minibuf_window; |
122 | ||
123 | /* Non-nil means it is the window for C-M-v to scroll | |
5500c422 GM |
124 | when the mini-buffer is selected. */ |
125 | ||
7ab12479 JB |
126 | Lisp_Object Vminibuf_scroll_window; |
127 | ||
128 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 129 | |
7ab12479 JB |
130 | Lisp_Object Vother_window_scroll_buffer; |
131 | ||
7ab12479 | 132 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 133 | |
7ab12479 JB |
134 | Lisp_Object Vtemp_buffer_show_function; |
135 | ||
136 | /* If a window gets smaller than either of these, it is removed. */ | |
5500c422 | 137 | |
7ab12479 JB |
138 | int window_min_height; |
139 | int window_min_width; | |
140 | ||
141 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 142 | |
7ab12479 JB |
143 | int pop_up_windows; |
144 | ||
44fa5b1e | 145 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 146 | |
44fa5b1e | 147 | int pop_up_frames; |
7ab12479 | 148 | |
9c3da604 GM |
149 | /* Nonzero means reuse existing frames for displaying buffers. */ |
150 | ||
151 | int display_buffer_reuse_frames; | |
152 | ||
7ab12479 | 153 | /* Non-nil means use this function instead of default */ |
5500c422 | 154 | |
44fa5b1e | 155 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
156 | |
157 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 158 | |
7ab12479 JB |
159 | Lisp_Object Vdisplay_buffer_function; |
160 | ||
6529ed87 GM |
161 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
162 | ||
163 | Lisp_Object Veven_window_heights; | |
164 | ||
a90712c2 | 165 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 166 | |
a90712c2 RS |
167 | Lisp_Object Vspecial_display_buffer_names; |
168 | ||
169 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 170 | |
a90712c2 RS |
171 | Lisp_Object Vspecial_display_regexps; |
172 | ||
173 | /* Function to pop up a special frame. */ | |
5500c422 | 174 | |
a90712c2 RS |
175 | Lisp_Object Vspecial_display_function; |
176 | ||
855d8627 | 177 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 178 | |
855d8627 RS |
179 | Lisp_Object Vsame_window_buffer_names; |
180 | ||
181 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 182 | |
855d8627 RS |
183 | Lisp_Object Vsame_window_regexps; |
184 | ||
a58ec57d | 185 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 186 | |
a58ec57d RS |
187 | Lisp_Object Qtemp_buffer_show_hook; |
188 | ||
37962e60 | 189 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 190 | if that window is more than this high. */ |
5500c422 | 191 | |
7ab12479 JB |
192 | int split_height_threshold; |
193 | ||
194 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 195 | |
7ab12479 JB |
196 | int next_screen_context_lines; |
197 | ||
198 | /* Incremented for each window created. */ | |
5500c422 | 199 | |
7ab12479 JB |
200 | static int sequence_number; |
201 | ||
5b03d3c0 | 202 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 203 | |
5b03d3c0 RS |
204 | static int window_initialized; |
205 | ||
543f5fb1 | 206 | /* Hook to run when window config changes. */ |
5500c422 | 207 | |
543f5fb1 RS |
208 | Lisp_Object Qwindow_configuration_change_hook; |
209 | Lisp_Object Vwindow_configuration_change_hook; | |
210 | ||
9317a85d RS |
211 | /* Nonzero means scroll commands try to put point |
212 | at the same screen height as previously. */ | |
9317a85d | 213 | |
5500c422 GM |
214 | Lisp_Object Vscroll_preserve_screen_position; |
215 | ||
216 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 217 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 218 | static int inhibit_frame_unsplittable; |
5500c422 | 219 | #endif /* 0 */ |
7d601aaa | 220 | |
9317a85d RS |
221 | extern int scroll_margin; |
222 | ||
dba06815 | 223 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
224 | \f |
225 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
226 | doc: /* Returns t if OBJECT is a window. */) |
227 | (object) | |
413430c5 | 228 | Lisp_Object object; |
7ab12479 | 229 | { |
413430c5 | 230 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
231 | } |
232 | ||
806b4d9b | 233 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 234 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
235 | (object) |
236 | Lisp_Object object; | |
605be8af | 237 | { |
9e571f49 | 238 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
239 | } |
240 | ||
7ab12479 JB |
241 | Lisp_Object |
242 | make_window () | |
243 | { | |
cffec418 | 244 | Lisp_Object val; |
7ab12479 | 245 | register struct window *p; |
cffec418 | 246 | |
26605be9 | 247 | p = allocate_window (); |
d834a2e9 KH |
248 | XSETFASTINT (p->sequence_number, ++sequence_number); |
249 | XSETFASTINT (p->left, 0); | |
250 | XSETFASTINT (p->top, 0); | |
251 | XSETFASTINT (p->height, 0); | |
252 | XSETFASTINT (p->width, 0); | |
253 | XSETFASTINT (p->hscroll, 0); | |
ea68264b | 254 | XSETFASTINT (p->min_hscroll, 0); |
f984d4fc | 255 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
256 | p->start = Fmake_marker (); |
257 | p->pointm = Fmake_marker (); | |
d834a2e9 | 258 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 259 | p->frame = Qnil; |
7ab12479 JB |
260 | p->display_table = Qnil; |
261 | p->dedicated = Qnil; | |
5500c422 GM |
262 | p->pseudo_window_p = 0; |
263 | bzero (&p->cursor, sizeof (p->cursor)); | |
264 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
265 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
266 | p->desired_matrix = p->current_matrix = 0; | |
267 | p->phys_cursor_type = -1; | |
268 | p->must_be_updated_p = 0; | |
269 | XSETFASTINT (p->window_end_vpos, 0); | |
270 | XSETFASTINT (p->window_end_pos, 0); | |
271 | p->window_end_valid = Qnil; | |
272 | p->vscroll = 0; | |
cffec418 | 273 | XSETWINDOW (val, p); |
5500c422 | 274 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 275 | p->frozen_window_start_p = 0; |
67492200 GM |
276 | |
277 | Vwindow_list = Qnil; | |
7ab12479 JB |
278 | return val; |
279 | } | |
280 | ||
281 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
282 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
283 | () | |
7ab12479 JB |
284 | { |
285 | return selected_window; | |
286 | } | |
287 | ||
83762ba4 | 288 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
289 | doc: /* Return the window used now for minibuffers. |
290 | If the optional argument FRAME is specified, return the minibuffer window | |
291 | used by that frame. */) | |
292 | (frame) | |
83762ba4 | 293 | Lisp_Object frame; |
7ab12479 | 294 | { |
83762ba4 | 295 | if (NILP (frame)) |
1ae1a37d | 296 | frame = selected_frame; |
b7826503 | 297 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 298 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
299 | } |
300 | ||
605be8af | 301 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
fdb82f93 PJ |
302 | doc: /* Returns non-nil if WINDOW is a minibuffer window. */) |
303 | (window) | |
7ab12479 JB |
304 | Lisp_Object window; |
305 | { | |
306 | struct window *w = decode_window (window); | |
53bb6b99 | 307 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
308 | } |
309 | ||
310 | ||
7ab12479 | 311 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 PJ |
312 | Spos_visible_in_window_p, 0, 3, 0, |
313 | doc: /* Return t if position POS is currently on the frame in WINDOW. | |
314 | Return nil if that position is scrolled vertically out of view. | |
315 | If a character is only partially visible, nil is returned, unless the | |
316 | optional argument PARTIALLY is non-nil. | |
317 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. */) | |
318 | (pos, window, partially) | |
5cdb3cf3 | 319 | Lisp_Object pos, window, partially; |
7ab12479 JB |
320 | { |
321 | register struct window *w; | |
7ab12479 JB |
322 | register int posint; |
323 | register struct buffer *buf; | |
9a132b1f GM |
324 | struct text_pos top; |
325 | Lisp_Object in_window; | |
53bb6b99 | 326 | int fully_p; |
7ab12479 | 327 | |
f28b75a9 MB |
328 | w = decode_window (window); |
329 | buf = XBUFFER (w->buffer); | |
330 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
331 | ||
332 | if (!NILP (pos)) | |
7ab12479 | 333 | { |
b7826503 | 334 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
335 | posint = XINT (pos); |
336 | } | |
f28b75a9 MB |
337 | else if (w == XWINDOW (selected_window)) |
338 | posint = PT; | |
339 | else | |
340 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 341 | |
53bb6b99 | 342 | /* If position is above window start, it's not visible. */ |
5500c422 | 343 | if (posint < CHARPOS (top)) |
9a132b1f GM |
344 | in_window = Qnil; |
345 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
81e4d465 MB |
346 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) |
347 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
81e4d465 | 348 | { |
53bb6b99 GM |
349 | /* If frame is up-to-date, and POSINT is < window end pos, use |
350 | that info. This doesn't work for POSINT == end pos, because | |
351 | the window end pos is actually the position _after_ the last | |
352 | char in the window. */ | |
5cdb3cf3 | 353 | if (NILP (partially)) |
53bb6b99 | 354 | { |
5cdb3cf3 | 355 | pos_visible_p (w, posint, &fully_p, NILP (partially)); |
53bb6b99 GM |
356 | in_window = fully_p ? Qt : Qnil; |
357 | } | |
81e4d465 | 358 | else |
53bb6b99 | 359 | in_window = Qt; |
81e4d465 | 360 | } |
9a132b1f GM |
361 | else if (posint > BUF_ZV (buf)) |
362 | in_window = Qnil; | |
363 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
364 | /* If window start is out of range, do something reasonable. */ | |
365 | in_window = Qnil; | |
7ab12479 JB |
366 | else |
367 | { | |
5cdb3cf3 MB |
368 | if (pos_visible_p (w, posint, &fully_p, NILP (partially))) |
369 | in_window = !NILP (partially) || fully_p ? Qt : Qnil; | |
81e4d465 MB |
370 | else |
371 | in_window = Qnil; | |
7ab12479 | 372 | } |
9a132b1f GM |
373 | |
374 | return in_window; | |
7ab12479 | 375 | } |
53bb6b99 | 376 | |
7ab12479 JB |
377 | \f |
378 | static struct window * | |
379 | decode_window (window) | |
380 | register Lisp_Object window; | |
381 | { | |
265a9e55 | 382 | if (NILP (window)) |
7ab12479 JB |
383 | return XWINDOW (selected_window); |
384 | ||
b7826503 | 385 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
386 | return XWINDOW (window); |
387 | } | |
388 | ||
389 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
fdb82f93 PJ |
390 | doc: /* Return the buffer that WINDOW is displaying. */) |
391 | (window) | |
7ab12479 JB |
392 | Lisp_Object window; |
393 | { | |
394 | return decode_window (window)->buffer; | |
395 | } | |
396 | ||
397 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
398 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
399 | (window) | |
7ab12479 JB |
400 | Lisp_Object window; |
401 | { | |
402 | return decode_window (window)->height; | |
403 | } | |
404 | ||
405 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
406 | doc: /* Return the number of display columns in WINDOW. |
407 | This is the width that is usable columns available for text in WINDOW. | |
408 | If you want to find out how many columns WINDOW takes up, | |
409 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
410 | (window) | |
7ab12479 JB |
411 | Lisp_Object window; |
412 | { | |
ee61d94e | 413 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
414 | } |
415 | ||
416 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
417 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
418 | (window) | |
7ab12479 JB |
419 | Lisp_Object window; |
420 | { | |
421 | return decode_window (window)->hscroll; | |
422 | } | |
423 | ||
424 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 PJ |
425 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
426 | NCOL should be zero or positive. */) | |
427 | (window, ncol) | |
ea68264b | 428 | Lisp_Object window, ncol; |
7ab12479 | 429 | { |
ea68264b GM |
430 | struct window *w = decode_window (window); |
431 | int hscroll; | |
7ab12479 | 432 | |
b7826503 | 433 | CHECK_NUMBER (ncol); |
ea68264b GM |
434 | hscroll = max (0, XINT (ncol)); |
435 | ||
436 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
437 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 438 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
ea68264b | 439 | |
c67fa410 | 440 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
441 | return ncol; |
442 | } | |
443 | ||
190eb263 RS |
444 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
445 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
446 | doc: /* Return WINDOW's redisplay end trigger value. |
447 | See `set-window-redisplay-end-trigger' for more information. */) | |
448 | (window) | |
190eb263 RS |
449 | Lisp_Object window; |
450 | { | |
451 | return decode_window (window)->redisplay_end_trigger; | |
452 | } | |
453 | ||
454 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
455 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
456 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
457 | VALUE should be a buffer position (typically a marker) or nil. | |
458 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
459 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
460 | with two arguments: WINDOW, and the end trigger value. | |
461 | Afterwards the end-trigger value is reset to nil. */) | |
462 | (window, value) | |
190eb263 RS |
463 | register Lisp_Object window, value; |
464 | { | |
465 | register struct window *w; | |
466 | ||
467 | w = decode_window (window); | |
468 | w->redisplay_end_trigger = value; | |
469 | return value; | |
470 | } | |
471 | ||
7ab12479 | 472 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
473 | doc: /* Return a list of the edge coordinates of WINDOW. |
474 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
475 | RIGHT is one more than the rightmost column used by WINDOW, | |
476 | and BOTTOM is one more than the bottommost row used by WINDOW | |
477 | and its mode-line. */) | |
478 | (window) | |
7ab12479 JB |
479 | Lisp_Object window; |
480 | { | |
481 | register struct window *w = decode_window (window); | |
482 | ||
483 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 484 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
485 | Fcons (make_number (XFASTINT (w->top) |
486 | + XFASTINT (w->height)), | |
487 | Qnil)))); | |
488 | } | |
489 | ||
fbad6f9a | 490 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
491 | If it is not, return 0; |
492 | if it is in the window's text area, | |
493 | set *x and *y to its location relative to the upper left corner | |
494 | of the window, and | |
495 | return 1; | |
496 | if it is on the window's modeline, return 2; | |
497 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
498 | return 3. |
499 | if it is on the window's top line, return 4; | |
81d189fd | 500 | if it is in left or right fringe of the window, |
fbad6f9a | 501 | return 5 or 6, and convert *X and *Y to window-relative corrdinates. |
5500c422 GM |
502 | |
503 | X and Y are frame relative pixel coordinates. */ | |
504 | ||
7442878f | 505 | static enum window_part |
d5783c40 JB |
506 | coordinates_in_window (w, x, y) |
507 | register struct window *w; | |
508 | register int *x, *y; | |
509 | { | |
1cb794ba GM |
510 | /* Let's make this a global enum later, instead of using numbers |
511 | everywhere. */ | |
b0228ace GM |
512 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
513 | int left_x, right_x, top_y, bottom_y; | |
81d189fd | 514 | int fringe_width = FRAME_LEFT_FRINGE_WIDTH (f); |
7442878f | 515 | enum window_part part; |
15c565ac | 516 | int ux = CANON_X_UNIT (f); |
b0228ace GM |
517 | int x0 = XFASTINT (w->left) * ux; |
518 | int x1 = x0 + XFASTINT (w->width) * ux; | |
dad75588 GM |
519 | /* The width of the area where the vertical line can be dragged. |
520 | (Between mode lines for instance. */ | |
521 | int grabbable_width = ux; | |
b0228ace GM |
522 | |
523 | if (*x < x0 || *x >= x1) | |
524 | return ON_NOTHING; | |
525 | ||
466539bc EZ |
526 | /* In what's below, we subtract 1 when computing right_x because we |
527 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
528 | if (w->pseudo_window_p) |
529 | { | |
530 | left_x = 0; | |
b0228ace | 531 | right_x = XFASTINT (w->width) * CANON_X_UNIT (f) - 1; |
5500c422 GM |
532 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); |
533 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
534 | } | |
535 | else | |
536 | { | |
2add4349 | 537 | left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w) |
50df5e5a | 538 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
466539bc | 539 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1; |
2add4349 | 540 | top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w) |
50df5e5a | 541 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
5500c422 GM |
542 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); |
543 | } | |
37962e60 | 544 | |
1cb794ba GM |
545 | /* On the mode line or header line? If it's near the start of |
546 | the mode or header line of window that's has a horizontal | |
547 | sibling, say it's on the vertical line. That's to be able | |
548 | to resize windows horizontally in case we're using toolkit | |
549 | scroll bars. */ | |
b0228ace | 550 | |
1cb794ba | 551 | if (WINDOW_WANTS_MODELINE_P (w) |
b0228ace GM |
552 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) |
553 | && *y < bottom_y) | |
1cb794ba | 554 | { |
b0228ace GM |
555 | /* We're somewhere on the mode line. We consider the place |
556 | between mode lines of horizontally adjacent mode lines | |
557 | as the vertical border. If scroll bars on the left, | |
558 | return the right window. */ | |
559 | part = ON_MODE_LINE; | |
560 | ||
561 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
562 | { | |
dad75588 | 563 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
564 | part = ON_VERTICAL_BORDER; |
565 | } | |
dad75588 | 566 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace | 567 | part = ON_VERTICAL_BORDER; |
1cb794ba | 568 | } |
b0228ace GM |
569 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
570 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
571 | && *y >= top_y) | |
572 | { | |
573 | part = ON_HEADER_LINE; | |
574 | ||
575 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
576 | { | |
dad75588 | 577 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
578 | part = ON_VERTICAL_BORDER; |
579 | } | |
dad75588 | 580 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace GM |
581 | part = ON_VERTICAL_BORDER; |
582 | } | |
583 | /* Outside anything interesting? */ | |
584 | else if (*y < top_y | |
585 | || *y >= bottom_y | |
586 | || *x < (left_x | |
81d189fd | 587 | - fringe_width |
b0228ace | 588 | - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * ux) |
7442878f | 589 | || *x > (right_x |
81d189fd | 590 | + fringe_width |
7442878f | 591 | + FRAME_RIGHT_SCROLL_BAR_WIDTH (f) * ux)) |
1cb794ba | 592 | { |
b0228ace | 593 | part = ON_NOTHING; |
1cb794ba | 594 | } |
b0228ace | 595 | else if (FRAME_WINDOW_P (f)) |
fbad6f9a | 596 | { |
447e9da0 GM |
597 | if (!w->pseudo_window_p |
598 | && !FRAME_HAS_VERTICAL_SCROLL_BARS (f) | |
599 | && !WINDOW_RIGHTMOST_P (w) | |
81d189fd | 600 | && (abs (*x - right_x - fringe_width) < grabbable_width)) |
b0228ace GM |
601 | { |
602 | part = ON_VERTICAL_BORDER; | |
603 | } | |
604 | else if (*x < left_x || *x > right_x) | |
447e9da0 | 605 | { |
81d189fd | 606 | /* Other lines than the mode line don't include fringes and |
447e9da0 | 607 | scroll bars on the left. */ |
fbad6f9a | 608 | |
447e9da0 GM |
609 | /* Convert X and Y to window-relative pixel coordinates. */ |
610 | *x -= left_x; | |
611 | *y -= top_y; | |
b0228ace GM |
612 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
613 | } | |
614 | else | |
615 | { | |
616 | *x -= left_x; | |
617 | *y -= top_y; | |
618 | part = ON_TEXT; | |
447e9da0 | 619 | } |
fbad6f9a | 620 | } |
447e9da0 GM |
621 | else |
622 | { | |
623 | /* Need to say "*x > right_x" rather than >=, since on character | |
624 | terminals, the vertical line's x coordinate is right_x. */ | |
625 | if (*x < left_x || *x > right_x) | |
626 | { | |
81d189fd | 627 | /* Other lines than the mode line don't include fringes and |
447e9da0 GM |
628 | scroll bars on the left. */ |
629 | ||
630 | /* Convert X and Y to window-relative pixel coordinates. */ | |
631 | *x -= left_x; | |
632 | *y -= top_y; | |
b0228ace | 633 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
447e9da0 | 634 | } |
447e9da0 | 635 | /* Here, too, "*x > right_x" is because of character terminals. */ |
b0228ace GM |
636 | else if (!w->pseudo_window_p |
637 | && !WINDOW_RIGHTMOST_P (w) | |
638 | && *x > right_x - ux) | |
639 | { | |
640 | /* On the border on the right side of the window? Assume that | |
641 | this area begins at RIGHT_X minus a canonical char width. */ | |
642 | part = ON_VERTICAL_BORDER; | |
643 | } | |
644 | else | |
645 | { | |
646 | /* Convert X and Y to window-relative pixel coordinates. */ | |
647 | *x -= left_x; | |
648 | *y -= top_y; | |
649 | part = ON_TEXT; | |
650 | } | |
447e9da0 | 651 | } |
b0228ace GM |
652 | |
653 | return part; | |
d5783c40 JB |
654 | } |
655 | ||
b0228ace | 656 | |
d5783c40 | 657 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
658 | Scoordinates_in_window_p, 2, 2, 0, |
659 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
660 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
661 | measured in characters from the upper-left corner of the frame. | |
662 | \(0 . 0) denotes the character in the upper left corner of the | |
663 | frame. | |
664 | If COORDINATES are in the text portion of WINDOW, | |
665 | the coordinates relative to the window are returned. | |
666 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
667 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
668 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
669 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 PJ |
670 | If they are on the border between WINDOW and its right sibling, |
671 | `vertical-line' is returned. */) | |
672 | (coordinates, window) | |
d5783c40 JB |
673 | register Lisp_Object coordinates, window; |
674 | { | |
5500c422 GM |
675 | struct window *w; |
676 | struct frame *f; | |
d5783c40 | 677 | int x, y; |
5500c422 | 678 | Lisp_Object lx, ly; |
d5783c40 | 679 | |
b7826503 | 680 | CHECK_LIVE_WINDOW (window); |
5500c422 GM |
681 | w = XWINDOW (window); |
682 | f = XFRAME (w->frame); | |
b7826503 | 683 | CHECK_CONS (coordinates); |
5500c422 GM |
684 | lx = Fcar (coordinates); |
685 | ly = Fcdr (coordinates); | |
b7826503 PJ |
686 | CHECK_NUMBER_OR_FLOAT (lx); |
687 | CHECK_NUMBER_OR_FLOAT (ly); | |
5500c422 GM |
688 | x = PIXEL_X_FROM_CANON_X (f, lx); |
689 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
690 | ||
691 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 692 | { |
7442878f | 693 | case ON_NOTHING: |
d5783c40 JB |
694 | return Qnil; |
695 | ||
7442878f GM |
696 | case ON_TEXT: |
697 | /* X and Y are now window relative pixel coordinates. Convert | |
698 | them to canonical char units before returning them. */ | |
5500c422 GM |
699 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), |
700 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 701 | |
7442878f | 702 | case ON_MODE_LINE: |
d5783c40 | 703 | return Qmode_line; |
37962e60 | 704 | |
7442878f | 705 | case ON_VERTICAL_BORDER: |
e5d77022 | 706 | return Qvertical_line; |
d5783c40 | 707 | |
7442878f | 708 | case ON_HEADER_LINE: |
045dee35 | 709 | return Qheader_line; |
5500c422 | 710 | |
7442878f GM |
711 | case ON_LEFT_FRINGE: |
712 | return Qleft_fringe; | |
fbad6f9a | 713 | |
7442878f GM |
714 | case ON_RIGHT_FRINGE: |
715 | return Qright_fringe; | |
fbad6f9a | 716 | |
d5783c40 JB |
717 | default: |
718 | abort (); | |
719 | } | |
720 | } | |
721 | ||
67492200 GM |
722 | |
723 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
724 | Check if window W contains coordinates specified by USER_DATA which |
725 | is actually a pointer to a struct check_window_data CW. | |
726 | ||
727 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
728 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 729 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
730 | zero from this function to stop iterating over windows. */ |
731 | ||
732 | struct check_window_data | |
733 | { | |
734 | Lisp_Object *window; | |
735 | int *x, *y, *part; | |
736 | }; | |
67492200 GM |
737 | |
738 | static int | |
f95464e4 | 739 | check_window_containing (w, user_data) |
67492200 | 740 | struct window *w; |
f95464e4 | 741 | void *user_data; |
67492200 | 742 | { |
f95464e4 | 743 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
744 | enum window_part found; |
745 | int continue_p = 1; | |
67492200 | 746 | |
f95464e4 | 747 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 748 | if (found != ON_NOTHING) |
67492200 | 749 | { |
f95464e4 GM |
750 | *cw->part = found - 1; |
751 | XSETWINDOW (*cw->window, w); | |
7442878f | 752 | continue_p = 0; |
67492200 GM |
753 | } |
754 | ||
7442878f | 755 | return continue_p; |
67492200 GM |
756 | } |
757 | ||
758 | ||
5500c422 GM |
759 | /* Find the window containing frame-relative pixel position X/Y and |
760 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
761 | set *PART to 1; if it is on the separating line between the window | |
762 | and its right sibling, set it to 2; otherwise set it to 0. If | |
763 | there is no window under X, Y return nil and leave *PART | |
67492200 GM |
764 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
765 | ||
766 | This function was previously implemented with a loop cycling over | |
767 | windows with Fnext_window, and starting with the frame's selected | |
768 | window. It turned out that this doesn't work with an | |
769 | implementation of next_window using Vwindow_list, because | |
770 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
771 | tree of F when this function is called asynchronously from | |
772 | note_mouse_highlight. The original loop didn't terminate in this | |
773 | case. */ | |
5500c422 | 774 | |
7ab12479 | 775 | Lisp_Object |
67492200 GM |
776 | window_from_coordinates (f, x, y, part, tool_bar_p) |
777 | struct frame *f; | |
7ab12479 | 778 | int x, y; |
d5783c40 | 779 | int *part; |
9ea173e8 | 780 | int tool_bar_p; |
7ab12479 | 781 | { |
67492200 | 782 | Lisp_Object window; |
f95464e4 | 783 | struct check_window_data cw; |
5500c422 | 784 | |
67492200 | 785 | window = Qnil; |
f95464e4 GM |
786 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
787 | foreach_window (f, check_window_containing, &cw); | |
67492200 GM |
788 | |
789 | /* If not found above, see if it's in the tool bar window, if a tool | |
790 | bar exists. */ | |
791 | if (NILP (window) | |
792 | && tool_bar_p | |
793 | && WINDOWP (f->tool_bar_window) | |
794 | && XINT (XWINDOW (f->tool_bar_window)->height) > 0 | |
7442878f GM |
795 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
796 | != ON_NOTHING)) | |
5500c422 GM |
797 | { |
798 | *part = 0; | |
67492200 | 799 | window = f->tool_bar_window; |
5500c422 | 800 | } |
37962e60 | 801 | |
67492200 | 802 | return window; |
7ab12479 JB |
803 | } |
804 | ||
ab17c3f2 | 805 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
806 | doc: /* Return window containing coordinates X and Y on FRAME. |
807 | If omitted, FRAME defaults to the currently selected frame. | |
808 | The top left corner of the frame is considered to be row 0, | |
809 | column 0. */) | |
810 | (x, y, frame) | |
811 | Lisp_Object x, y, frame; | |
7ab12479 JB |
812 | { |
813 | int part; | |
5500c422 | 814 | struct frame *f; |
7ab12479 | 815 | |
44fa5b1e | 816 | if (NILP (frame)) |
1ae1a37d | 817 | frame = selected_frame; |
b7826503 | 818 | CHECK_LIVE_FRAME (frame); |
5500c422 | 819 | f = XFRAME (frame); |
7ab12479 | 820 | |
5500c422 | 821 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
822 | CHECK_NUMBER_OR_FLOAT (x); |
823 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 GM |
824 | |
825 | return window_from_coordinates (f, | |
826 | PIXEL_X_FROM_CANON_X (f, x), | |
827 | PIXEL_Y_FROM_CANON_Y (f, y), | |
828 | &part, 0); | |
7ab12479 JB |
829 | } |
830 | ||
831 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
832 | doc: /* Return current value of point in WINDOW. |
833 | For a nonselected window, this is the value point would have | |
834 | if that window were selected. | |
835 | ||
836 | Note that, when WINDOW is the selected window and its buffer | |
837 | is also currently selected, the value returned is the same as (point). | |
838 | It would be more strictly correct to return the `top-level' value | |
839 | of point, outside of any save-excursion forms. | |
840 | But that is hard to define. */) | |
841 | (window) | |
7ab12479 JB |
842 | Lisp_Object window; |
843 | { | |
844 | register struct window *w = decode_window (window); | |
845 | ||
846 | if (w == XWINDOW (selected_window) | |
847 | && current_buffer == XBUFFER (w->buffer)) | |
848 | return Fpoint (); | |
849 | return Fmarker_position (w->pointm); | |
850 | } | |
851 | ||
852 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
853 | doc: /* Return position at which display currently starts in WINDOW. |
854 | This is updated by redisplay or by calling `set-window-start'. */) | |
855 | (window) | |
7ab12479 JB |
856 | Lisp_Object window; |
857 | { | |
858 | return Fmarker_position (decode_window (window)->start); | |
859 | } | |
860 | ||
8646118f RS |
861 | /* This is text temporarily removed from the doc string below. |
862 | ||
fdb82f93 PJ |
863 | This function returns nil if the position is not currently known. |
864 | That happens when redisplay is preempted and doesn't finish. | |
865 | If in that case you want to compute where the end of the window would | |
866 | have been if redisplay had finished, do this: | |
867 | (save-excursion | |
868 | (goto-char (window-start window)) | |
869 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
870 | (point))") */ |
871 | ||
478292ed | 872 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
873 | doc: /* Return position at which display currently ends in WINDOW. |
874 | This is updated by redisplay, when it runs to completion. | |
875 | Simply changing the buffer text or setting `window-start' | |
876 | does not update this value. | |
877 | If UPDATE is non-nil, compute the up-to-date position | |
878 | if it isn't already recorded. */) | |
879 | (window, update) | |
478292ed | 880 | Lisp_Object window, update; |
7ab12479 JB |
881 | { |
882 | Lisp_Object value; | |
883 | struct window *w = decode_window (window); | |
5a41ab94 RS |
884 | Lisp_Object buf; |
885 | ||
886 | buf = w->buffer; | |
b7826503 | 887 | CHECK_BUFFER (buf); |
5a41ab94 | 888 | |
8646118f | 889 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
890 | /* If we don't know the end position, return nil. |
891 | The user can compute it with vertical-motion if he wants to. | |
892 | It would be nicer to do it automatically, | |
893 | but that's so slow that it would probably bother people. */ | |
894 | if (NILP (w->window_end_valid)) | |
895 | return Qnil; | |
8646118f | 896 | #endif |
7250968e | 897 | |
478292ed RS |
898 | if (! NILP (update) |
899 | && ! (! NILP (w->window_end_valid) | |
900 | && XFASTINT (w->last_modified) >= MODIFF)) | |
901 | { | |
cbc099e5 GM |
902 | struct text_pos startp; |
903 | struct it it; | |
99593a9d | 904 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
905 | |
906 | /* In case W->start is out of the range, use something | |
907 | reasonable. This situation occured when loading a file with | |
908 | `-l' containing a call to `rmail' with subsequent other | |
909 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 910 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 911 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 912 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 913 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 914 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 915 | else |
cbc099e5 GM |
916 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
917 | ||
918 | /* Cannot use Fvertical_motion because that function doesn't | |
919 | cope with variable-height lines. */ | |
99593a9d GM |
920 | if (b != current_buffer) |
921 | { | |
922 | old_buffer = current_buffer; | |
923 | set_buffer_internal (b); | |
924 | } | |
925 | ||
cbc099e5 GM |
926 | start_display (&it, w, startp); |
927 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
928 | if (it.current_y < it.last_visible_y) |
929 | move_it_past_eol (&it); | |
cbc099e5 | 930 | value = make_number (IT_CHARPOS (it)); |
99593a9d GM |
931 | |
932 | if (old_buffer) | |
933 | set_buffer_internal (old_buffer); | |
478292ed RS |
934 | } |
935 | else | |
cbc099e5 | 936 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
937 | |
938 | return value; | |
939 | } | |
940 | ||
941 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
fdb82f93 PJ |
942 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. */) |
943 | (window, pos) | |
7ab12479 JB |
944 | Lisp_Object window, pos; |
945 | { | |
946 | register struct window *w = decode_window (window); | |
947 | ||
b7826503 | 948 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
949 | if (w == XWINDOW (selected_window) |
950 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
951 | Fgoto_char (pos); |
952 | else | |
953 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 954 | |
0685cb3c GM |
955 | /* We have to make sure that redisplay updates the window to show |
956 | the new value of point. */ | |
957 | if (!EQ (window, selected_window)) | |
799417bd | 958 | ++windows_or_buffers_changed; |
ce7fae7d | 959 | |
7ab12479 JB |
960 | return pos; |
961 | } | |
962 | ||
963 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 PJ |
964 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
965 | Optional third arg NOFORCE non-nil inhibits next redisplay | |
966 | from overriding motion of point in order to display at this exact start. */) | |
967 | (window, pos, noforce) | |
7ab12479 JB |
968 | Lisp_Object window, pos, noforce; |
969 | { | |
970 | register struct window *w = decode_window (window); | |
971 | ||
b7826503 | 972 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
973 | set_marker_restricted (w->start, pos, w->buffer); |
974 | /* this is not right, but much easier than doing what is right. */ | |
975 | w->start_at_line_beg = Qnil; | |
265a9e55 | 976 | if (NILP (noforce)) |
7ab12479 JB |
977 | w->force_start = Qt; |
978 | w->update_mode_line = Qt; | |
d834a2e9 | 979 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 980 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
981 | if (!EQ (window, selected_window)) |
982 | windows_or_buffers_changed++; | |
ce7fae7d | 983 | |
7ab12479 JB |
984 | return pos; |
985 | } | |
986 | ||
987 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
988 | 1, 1, 0, | |
fdb82f93 PJ |
989 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
990 | See also `set-window-dedicated-p'. */) | |
991 | (window) | |
7ab12479 JB |
992 | Lisp_Object window; |
993 | { | |
994 | return decode_window (window)->dedicated; | |
995 | } | |
996 | ||
d207b766 RS |
997 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
998 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
999 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1000 | If it is dedicated, Emacs will not automatically change | |
1001 | which buffer appears in it. | |
1002 | The second argument is the new value for the dedication flag; | |
1003 | non-nil means yes. */) | |
1004 | (window, arg) | |
1005 | Lisp_Object window, arg; | |
7ab12479 JB |
1006 | { |
1007 | register struct window *w = decode_window (window); | |
1008 | ||
265a9e55 | 1009 | if (NILP (arg)) |
7ab12479 JB |
1010 | w->dedicated = Qnil; |
1011 | else | |
d207b766 | 1012 | w->dedicated = Qt; |
7ab12479 JB |
1013 | |
1014 | return w->dedicated; | |
1015 | } | |
1016 | ||
1017 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1018 | 0, 1, 0, | |
fdb82f93 PJ |
1019 | doc: /* Return the display-table that WINDOW is using. */) |
1020 | (window) | |
7ab12479 JB |
1021 | Lisp_Object window; |
1022 | { | |
1023 | return decode_window (window)->display_table; | |
1024 | } | |
1025 | ||
5500c422 GM |
1026 | /* Get the display table for use on window W. This is either W's |
1027 | display table or W's buffer's display table. Ignore the specified | |
1028 | tables if they are not valid; if no valid table is specified, | |
1029 | return 0. */ | |
7ab12479 | 1030 | |
319315f1 | 1031 | struct Lisp_Char_Table * |
7ab12479 JB |
1032 | window_display_table (w) |
1033 | struct window *w; | |
1034 | { | |
c756cdbe GM |
1035 | struct Lisp_Char_Table *dp = NULL; |
1036 | ||
1037 | if (DISP_TABLE_P (w->display_table)) | |
1038 | dp = XCHAR_TABLE (w->display_table); | |
1039 | else if (BUFFERP (w->buffer)) | |
1040 | { | |
1041 | struct buffer *b = XBUFFER (w->buffer); | |
1042 | ||
1043 | if (DISP_TABLE_P (b->display_table)) | |
1044 | dp = XCHAR_TABLE (b->display_table); | |
1045 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1046 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1047 | } | |
171d003c | 1048 | |
c756cdbe | 1049 | return dp; |
7ab12479 JB |
1050 | } |
1051 | ||
3a2712f9 | 1052 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1053 | doc: /* Set WINDOW's display-table to TABLE. */) |
1054 | (window, table) | |
7ab12479 JB |
1055 | register Lisp_Object window, table; |
1056 | { | |
1057 | register struct window *w; | |
7ab12479 JB |
1058 | |
1059 | w = decode_window (window); | |
1060 | w->display_table = table; | |
1061 | return table; | |
1062 | } | |
1063 | \f | |
1064 | /* Record info on buffer window w is displaying | |
1065 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1066 | static void |
7ab12479 JB |
1067 | unshow_buffer (w) |
1068 | register struct window *w; | |
1069 | { | |
12cae7c0 | 1070 | Lisp_Object buf; |
b73ea88e | 1071 | struct buffer *b; |
7ab12479 | 1072 | |
12cae7c0 | 1073 | buf = w->buffer; |
b73ea88e RS |
1074 | b = XBUFFER (buf); |
1075 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1076 | abort (); |
1077 | ||
573f41ab | 1078 | #if 0 |
7ab12479 JB |
1079 | if (w == XWINDOW (selected_window) |
1080 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1081 | /* Do this except when the selected window's buffer | |
1082 | is being removed from some other window. */ | |
573f41ab RS |
1083 | #endif |
1084 | /* last_window_start records the start position that this buffer | |
1085 | had in the last window to be disconnected from it. | |
1086 | Now that this statement is unconditional, | |
1087 | it is possible for the buffer to be displayed in the | |
1088 | selected window, while last_window_start reflects another | |
1089 | window which was recently showing the same buffer. | |
1090 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1091 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1092 | |
1093 | /* Point in the selected window's buffer | |
1094 | is actually stored in that buffer, and the window's pointm isn't used. | |
1095 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1096 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1097 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1098 | && !(WINDOWP (b->last_selected_window) |
1099 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1100 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1101 | temp_set_point_both (b, |
1102 | clip_to_bounds (BUF_BEGV (b), | |
1103 | XMARKER (w->pointm)->charpos, | |
1104 | BUF_ZV (b)), | |
1105 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1106 | marker_byte_position (w->pointm), | |
1107 | BUF_ZV_BYTE (b))); | |
719eaeb1 | 1108 | |
8801a864 KR |
1109 | if (WINDOWP (b->last_selected_window) |
1110 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1111 | b->last_selected_window = Qnil; |
7ab12479 JB |
1112 | } |
1113 | ||
1114 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1115 | static void |
7ab12479 JB |
1116 | replace_window (old, replacement) |
1117 | Lisp_Object old, replacement; | |
1118 | { | |
1119 | register Lisp_Object tem; | |
1120 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1121 | ||
44fa5b1e JB |
1122 | /* If OLD is its frame's root_window, then replacement is the new |
1123 | root_window for that frame. */ | |
7ab12479 | 1124 | |
7f4161e0 | 1125 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1126 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
1127 | |
1128 | p->left = o->left; | |
1129 | p->top = o->top; | |
1130 | p->width = o->width; | |
1131 | p->height = o->height; | |
5500c422 GM |
1132 | p->desired_matrix = p->current_matrix = 0; |
1133 | p->vscroll = 0; | |
1134 | bzero (&p->cursor, sizeof (p->cursor)); | |
1135 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1136 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1137 | p->phys_cursor_type = -1; | |
1138 | p->must_be_updated_p = 0; | |
1139 | p->pseudo_window_p = 0; | |
1140 | XSETFASTINT (p->window_end_vpos, 0); | |
1141 | XSETFASTINT (p->window_end_pos, 0); | |
1142 | p->window_end_valid = Qnil; | |
7bbb5782 | 1143 | p->frozen_window_start_p = 0; |
f984d4fc | 1144 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
1145 | |
1146 | p->next = tem = o->next; | |
265a9e55 | 1147 | if (!NILP (tem)) |
7ab12479 JB |
1148 | XWINDOW (tem)->prev = replacement; |
1149 | ||
1150 | p->prev = tem = o->prev; | |
265a9e55 | 1151 | if (!NILP (tem)) |
7ab12479 JB |
1152 | XWINDOW (tem)->next = replacement; |
1153 | ||
1154 | p->parent = tem = o->parent; | |
265a9e55 | 1155 | if (!NILP (tem)) |
7ab12479 JB |
1156 | { |
1157 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1158 | XWINDOW (tem)->vchild = replacement; | |
1159 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1160 | XWINDOW (tem)->hchild = replacement; | |
1161 | } | |
1162 | ||
1163 | /*** Here, if replacement is a vertical combination | |
1164 | and so is its new parent, we should make replacement's | |
1165 | children be children of that parent instead. ***/ | |
1166 | } | |
1167 | ||
1168 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1169 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1170 | (window) | |
7ab12479 | 1171 | register Lisp_Object window; |
543f5fb1 RS |
1172 | { |
1173 | delete_window (window); | |
1174 | ||
1175 | if (! NILP (Vwindow_configuration_change_hook) | |
1176 | && ! NILP (Vrun_hooks)) | |
1177 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1178 | ||
1179 | return Qnil; | |
1180 | } | |
1181 | ||
5e14b1fc | 1182 | void |
543f5fb1 RS |
1183 | delete_window (window) |
1184 | register Lisp_Object window; | |
7ab12479 JB |
1185 | { |
1186 | register Lisp_Object tem, parent, sib; | |
1187 | register struct window *p; | |
1188 | register struct window *par; | |
951f9df5 | 1189 | struct frame *f; |
7ab12479 | 1190 | |
605be8af JB |
1191 | /* Because this function is called by other C code on non-leaf |
1192 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1193 | so we can't decode_window here. */ | |
265a9e55 | 1194 | if (NILP (window)) |
7ab12479 JB |
1195 | window = selected_window; |
1196 | else | |
b7826503 | 1197 | CHECK_WINDOW (window); |
7ab12479 | 1198 | p = XWINDOW (window); |
605be8af JB |
1199 | |
1200 | /* It's okay to delete an already-deleted window. */ | |
1201 | if (NILP (p->buffer) | |
1202 | && NILP (p->hchild) | |
1203 | && NILP (p->vchild)) | |
296b535c | 1204 | return; |
605be8af | 1205 | |
7ab12479 | 1206 | parent = p->parent; |
265a9e55 | 1207 | if (NILP (parent)) |
7ab12479 JB |
1208 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1209 | par = XWINDOW (parent); | |
1210 | ||
1211 | windows_or_buffers_changed++; | |
67492200 | 1212 | Vwindow_list = Qnil; |
951f9df5 GM |
1213 | f = XFRAME (WINDOW_FRAME (p)); |
1214 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1215 | |
605be8af JB |
1216 | /* Are we trying to delete any frame's selected window? */ |
1217 | { | |
951f9df5 | 1218 | Lisp_Object pwindow; |
605be8af | 1219 | |
0def0403 RS |
1220 | /* See if the frame's selected window is either WINDOW |
1221 | or any subwindow of it, by finding all that window's parents | |
1222 | and comparing each one with WINDOW. */ | |
951f9df5 | 1223 | pwindow = FRAME_SELECTED_WINDOW (f); |
0def0403 RS |
1224 | |
1225 | while (!NILP (pwindow)) | |
1226 | { | |
1227 | if (EQ (window, pwindow)) | |
1228 | break; | |
1229 | pwindow = XWINDOW (pwindow)->parent; | |
1230 | } | |
1231 | ||
1232 | if (EQ (window, pwindow)) | |
605be8af | 1233 | { |
89bca612 RS |
1234 | Lisp_Object alternative; |
1235 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
1236 | |
1237 | /* If we're about to delete the selected window on the | |
1238 | selected frame, then we should use Fselect_window to select | |
1239 | the new window. On the other hand, if we're about to | |
1240 | delete the selected window on any other frame, we shouldn't do | |
1241 | anything but set the frame's selected_window slot. */ | |
1242 | if (EQ (window, selected_window)) | |
1243 | Fselect_window (alternative); | |
1244 | else | |
951f9df5 | 1245 | FRAME_SELECTED_WINDOW (f) = alternative; |
605be8af JB |
1246 | } |
1247 | } | |
7ab12479 JB |
1248 | |
1249 | tem = p->buffer; | |
1250 | /* tem is null for dummy parent windows | |
1251 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1252 | if (!NILP (tem)) |
7ab12479 JB |
1253 | { |
1254 | unshow_buffer (p); | |
1255 | unchain_marker (p->pointm); | |
1256 | unchain_marker (p->start); | |
7ab12479 JB |
1257 | } |
1258 | ||
05e71564 GM |
1259 | /* Free window glyph matrices. It is sure that they are allocated |
1260 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1261 | events and other events that access glyph matrices are not | |
1262 | processed while we are changing them. */ | |
1263 | BLOCK_INPUT; | |
951f9df5 | 1264 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1265 | |
7ab12479 | 1266 | tem = p->next; |
265a9e55 | 1267 | if (!NILP (tem)) |
7ab12479 JB |
1268 | XWINDOW (tem)->prev = p->prev; |
1269 | ||
1270 | tem = p->prev; | |
265a9e55 | 1271 | if (!NILP (tem)) |
7ab12479 JB |
1272 | XWINDOW (tem)->next = p->next; |
1273 | ||
1274 | if (EQ (window, par->hchild)) | |
1275 | par->hchild = p->next; | |
1276 | if (EQ (window, par->vchild)) | |
1277 | par->vchild = p->next; | |
1278 | ||
1279 | /* Find one of our siblings to give our space to. */ | |
1280 | sib = p->prev; | |
265a9e55 | 1281 | if (NILP (sib)) |
7ab12479 JB |
1282 | { |
1283 | /* If p gives its space to its next sibling, that sibling needs | |
1284 | to have its top/left side pulled back to where p's is. | |
1285 | set_window_{height,width} will re-position the sibling's | |
1286 | children. */ | |
1287 | sib = p->next; | |
7f4161e0 JB |
1288 | XWINDOW (sib)->top = p->top; |
1289 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1290 | } |
1291 | ||
1292 | /* Stretch that sibling. */ | |
265a9e55 | 1293 | if (!NILP (par->vchild)) |
7ab12479 JB |
1294 | set_window_height (sib, |
1295 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1296 | 1); | |
265a9e55 | 1297 | if (!NILP (par->hchild)) |
7ab12479 JB |
1298 | set_window_width (sib, |
1299 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1300 | 1); | |
1301 | ||
1302 | /* If parent now has only one child, | |
1303 | put the child into the parent's place. */ | |
7ab12479 | 1304 | tem = par->hchild; |
265a9e55 | 1305 | if (NILP (tem)) |
7ab12479 | 1306 | tem = par->vchild; |
265a9e55 | 1307 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1308 | replace_window (parent, tem); |
605be8af JB |
1309 | |
1310 | /* Since we may be deleting combination windows, we must make sure that | |
1311 | not only p but all its children have been marked as deleted. */ | |
1312 | if (! NILP (p->hchild)) | |
1313 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1314 | else if (! NILP (p->vchild)) | |
1315 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1316 | ||
1317 | /* Mark this window as deleted. */ | |
1318 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1319 | |
1320 | /* Adjust glyph matrices. */ | |
951f9df5 | 1321 | adjust_glyphs (f); |
05e71564 | 1322 | UNBLOCK_INPUT; |
7ab12479 | 1323 | } |
67492200 GM |
1324 | |
1325 | ||
7ab12479 | 1326 | \f |
67492200 GM |
1327 | /*********************************************************************** |
1328 | Window List | |
1329 | ***********************************************************************/ | |
1330 | ||
f95464e4 GM |
1331 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1332 | pointer. This is a callback function for foreach_window, used in | |
1333 | function window_list. */ | |
67492200 GM |
1334 | |
1335 | static int | |
f95464e4 | 1336 | add_window_to_list (w, user_data) |
67492200 | 1337 | struct window *w; |
f95464e4 | 1338 | void *user_data; |
67492200 | 1339 | { |
f95464e4 | 1340 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1341 | Lisp_Object window; |
1342 | XSETWINDOW (window, w); | |
212116d6 | 1343 | *list = Fcons (window, *list); |
67492200 GM |
1344 | return 1; |
1345 | } | |
1346 | ||
1347 | ||
1348 | /* Return a list of all windows, for use by next_window. If | |
1349 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1350 | list, cache it in Vwindow_list, and return that. */ | |
1351 | ||
1352 | static Lisp_Object | |
1353 | window_list () | |
1354 | { | |
1355 | if (!CONSP (Vwindow_list)) | |
1356 | { | |
1357 | Lisp_Object tail; | |
212116d6 | 1358 | |
67492200 GM |
1359 | Vwindow_list = Qnil; |
1360 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1361 | { |
1362 | Lisp_Object args[2]; | |
1363 | ||
1364 | /* We are visiting windows in canonical order, and add | |
1365 | new windows at the front of args[1], which means we | |
1366 | have to reverse this list at the end. */ | |
1367 | args[1] = Qnil; | |
1368 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1369 | args[0] = Vwindow_list; | |
1370 | args[1] = Fnreverse (args[1]); | |
1371 | Vwindow_list = Fnconc (2, args); | |
1372 | } | |
67492200 GM |
1373 | } |
1374 | ||
1375 | return Vwindow_list; | |
1376 | } | |
1377 | ||
1378 | ||
118ea242 GM |
1379 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1380 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1381 | |
118ea242 GM |
1382 | MINIBUF t means WINDOW may be minibuffer windows. |
1383 | `lambda' means WINDOW may not be a minibuffer window. | |
1384 | a window means a specific minibuffer window | |
67492200 | 1385 | |
118ea242 GM |
1386 | ALL_FRAMES t means search all frames, |
1387 | nil means search just current frame, | |
1388 | `visible' means search just visible frames, | |
1389 | 0 means search visible and iconified frames, | |
1390 | a window means search the frame that window belongs to, | |
1391 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1392 | |
1393 | static int | |
118ea242 GM |
1394 | candidate_window_p (window, owindow, minibuf, all_frames) |
1395 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1396 | { |
1397 | struct window *w = XWINDOW (window); | |
1398 | struct frame *f = XFRAME (w->frame); | |
1399 | int candidate_p = 1; | |
1400 | ||
1401 | if (!BUFFERP (w->buffer)) | |
1402 | candidate_p = 0; | |
1403 | else if (MINI_WINDOW_P (w) | |
1404 | && (EQ (minibuf, Qlambda) | |
1405 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1406 | { | |
1407 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1408 | If it is a window, consider only that one. */ | |
1409 | candidate_p = 0; | |
1410 | } | |
118ea242 GM |
1411 | else if (EQ (all_frames, Qt)) |
1412 | candidate_p = 1; | |
67492200 | 1413 | else if (NILP (all_frames)) |
118ea242 GM |
1414 | { |
1415 | xassert (WINDOWP (owindow)); | |
1416 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1417 | } | |
67492200 GM |
1418 | else if (EQ (all_frames, Qvisible)) |
1419 | { | |
1420 | FRAME_SAMPLE_VISIBILITY (f); | |
1421 | candidate_p = FRAME_VISIBLE_P (f); | |
1422 | } | |
1423 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1424 | { | |
1425 | FRAME_SAMPLE_VISIBILITY (f); | |
1426 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1427 | } | |
67492200 GM |
1428 | else if (WINDOWP (all_frames)) |
1429 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1430 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1431 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1432 | else if (FRAMEP (all_frames)) |
1433 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1434 | |
1435 | return candidate_p; | |
1436 | } | |
1437 | ||
1438 | ||
1439 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1440 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1441 | ALL_FRAMES. */ | |
1442 | ||
1443 | static void | |
1444 | decode_next_window_args (window, minibuf, all_frames) | |
1445 | Lisp_Object *window, *minibuf, *all_frames; | |
1446 | { | |
1447 | if (NILP (*window)) | |
1448 | *window = selected_window; | |
1449 | else | |
b7826503 | 1450 | CHECK_LIVE_WINDOW (*window); |
67492200 GM |
1451 | |
1452 | /* MINIBUF nil may or may not include minibuffers. Decide if it | |
1453 | does. */ | |
1454 | if (NILP (*minibuf)) | |
1455 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1456 | else if (!EQ (*minibuf, Qt)) | |
1457 | *minibuf = Qlambda; | |
1458 | ||
1459 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' | |
1460 | => count none of them, or a specific minibuffer window (the | |
1461 | active one) to count. */ | |
1462 | ||
1463 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1464 | if (NILP (*all_frames)) | |
1465 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1466 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1467 | : Qnil); | |
1468 | else if (EQ (*all_frames, Qvisible)) | |
1469 | ; | |
1470 | else if (XFASTINT (*all_frames) == 0) | |
1471 | ; | |
1472 | else if (FRAMEP (*all_frames)) | |
1473 | ; | |
1474 | else if (!EQ (*all_frames, Qt)) | |
1475 | *all_frames = Qnil; | |
1476 | ||
1477 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning | |
1478 | search just current frame, `visible' meaning search just visible | |
1479 | frames, 0 meaning search visible and iconified frames, or a | |
1480 | window, meaning search the frame that window belongs to, or a | |
1481 | frame, meaning consider windows on that frame, only. */ | |
1482 | } | |
1483 | ||
1484 | ||
1485 | /* Return the next or previous window of WINDOW in canonical ordering | |
1486 | of windows. NEXT_P non-zero means return the next window. See the | |
1487 | documentation string of next-window for the meaning of MINIBUF and | |
1488 | ALL_FRAMES. */ | |
1489 | ||
1490 | static Lisp_Object | |
1491 | next_window (window, minibuf, all_frames, next_p) | |
1492 | Lisp_Object window, minibuf, all_frames; | |
1493 | int next_p; | |
1494 | { | |
1495 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1496 | ||
1497 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just | |
1498 | return the first window on the frame. */ | |
1499 | if (FRAMEP (all_frames) | |
1500 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1501 | return Fframe_first_window (all_frames); | |
1502 | ||
212116d6 | 1503 | if (next_p) |
67492200 GM |
1504 | { |
1505 | Lisp_Object list; | |
1506 | ||
1507 | /* Find WINDOW in the list of all windows. */ | |
1508 | list = Fmemq (window, window_list ()); | |
1509 | ||
1510 | /* Scan forward from WINDOW to the end of the window list. */ | |
1511 | if (CONSP (list)) | |
1512 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1513 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1514 | break; |
1515 | ||
1516 | /* Scan from the start of the window list up to WINDOW. */ | |
1517 | if (!CONSP (list)) | |
1518 | for (list = Vwindow_list; | |
1519 | CONSP (list) && !EQ (XCAR (list), window); | |
1520 | list = XCDR (list)) | |
118ea242 | 1521 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1522 | break; |
1523 | ||
1524 | if (CONSP (list)) | |
1525 | window = XCAR (list); | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | Lisp_Object candidate, list; | |
1530 | ||
1531 | /* Scan through the list of windows for candidates. If there are | |
1532 | candidate windows in front of WINDOW, the last one of these | |
1533 | is the one we want. If there are candidates following WINDOW | |
1534 | in the list, again the last one of these is the one we want. */ | |
1535 | candidate = Qnil; | |
1536 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1537 | { | |
1538 | if (EQ (XCAR (list), window)) | |
1539 | { | |
1540 | if (WINDOWP (candidate)) | |
1541 | break; | |
1542 | } | |
118ea242 GM |
1543 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1544 | all_frames)) | |
67492200 GM |
1545 | candidate = XCAR (list); |
1546 | } | |
1547 | ||
1548 | if (WINDOWP (candidate)) | |
1549 | window = candidate; | |
1550 | } | |
1551 | ||
1552 | return window; | |
1553 | } | |
7ab12479 | 1554 | |
7ab12479 | 1555 | |
26f6279d | 1556 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1557 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1558 | If omitted, WINDOW defaults to the selected window. | |
1559 | ||
1560 | Optional second arg MINIBUF t means count the minibuffer window even | |
1561 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1562 | it is active. MINIBUF neither t nor nil means not to count the | |
1563 | minibuffer even if it is active. | |
1564 | ||
1565 | Several frames may share a single minibuffer; if the minibuffer | |
1566 | counts, all windows on all frames that share that minibuffer count | |
1567 | too. Therefore, `next-window' can be used to iterate through the | |
1568 | set of windows even when the minibuffer is on another frame. If the | |
1569 | minibuffer does not count, only windows from WINDOW's frame count. | |
1570 | ||
1571 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1572 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1573 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1574 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1575 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1576 | Anything else means restrict to WINDOW's frame. | |
1577 | ||
1578 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1579 | `next-window' to iterate through the entire cycle of acceptable | |
1580 | windows, eventually ending up back at the window you started with. | |
1581 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1582 | (window, minibuf, all_frames) | |
67492200 | 1583 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1584 | { |
67492200 | 1585 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1586 | } |
1587 | ||
67492200 | 1588 | |
26f6279d | 1589 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1590 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1591 | If omitted, WINDOW defaults to the selected window. | |
1592 | ||
1593 | Optional second arg MINIBUF t means count the minibuffer window even | |
1594 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1595 | it is active. MINIBUF neither t nor nil means not to count the | |
1596 | minibuffer even if it is active. | |
1597 | ||
1598 | Several frames may share a single minibuffer; if the minibuffer | |
1599 | counts, all windows on all frames that share that minibuffer count | |
1600 | too. Therefore, `previous-window' can be used to iterate through | |
1601 | the set of windows even when the minibuffer is on another frame. If | |
1602 | the minibuffer does not count, only windows from WINDOW's frame count | |
1603 | ||
1604 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1605 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1606 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1607 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1608 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1609 | Anything else means restrict to WINDOW's frame. | |
1610 | ||
1611 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1612 | `previous-window' to iterate through the entire cycle of acceptable | |
1613 | windows, eventually ending up back at the window you started with. | |
1614 | `next-window' traverses the same cycle, in the reverse order. */) | |
1615 | (window, minibuf, all_frames) | |
67492200 | 1616 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1617 | { |
67492200 | 1618 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1619 | } |
1620 | ||
67492200 | 1621 | |
62c07cc7 | 1622 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1623 | doc: /* Select the ARG'th different window on this frame. |
1624 | All windows on current frame are arranged in a cyclic order. | |
1625 | This command selects the window ARG steps away in that order. | |
1626 | A negative ARG moves in the opposite order. If the optional second | |
1627 | argument ALL_FRAMES is non-nil, cycle through all frames. */) | |
1628 | (arg, all_frames) | |
67492200 | 1629 | Lisp_Object arg, all_frames; |
7ab12479 | 1630 | { |
67492200 GM |
1631 | Lisp_Object window; |
1632 | int i; | |
7ab12479 | 1633 | |
b7826503 | 1634 | CHECK_NUMBER (arg); |
67492200 GM |
1635 | window = selected_window; |
1636 | ||
1637 | for (i = XINT (arg); i > 0; --i) | |
1638 | window = Fnext_window (window, Qnil, all_frames); | |
1639 | for (; i < 0; ++i) | |
1640 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1641 | |
67492200 | 1642 | Fselect_window (window); |
7ab12479 JB |
1643 | return Qnil; |
1644 | } | |
67492200 GM |
1645 | |
1646 | ||
1647 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1648 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1649 | FRAME nil or omitted means use the selected frame. | |
1650 | WINDOW nil or omitted means use the selected window. | |
1651 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1652 | MINIBUF nil or omitted means include the minibuffer window only | |
1653 | if it's active. | |
1654 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1655 | (frame, minibuf, window) | |
cd2904bd GM |
1656 | Lisp_Object frame, minibuf, window; |
1657 | { | |
cd2904bd GM |
1658 | if (NILP (window)) |
1659 | window = selected_window; | |
1660 | if (NILP (frame)) | |
1661 | frame = selected_frame; | |
1662 | ||
1663 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1664 | error ("Window is on a different frame"); | |
1665 | ||
1666 | return window_list_1 (window, minibuf, frame); | |
1667 | } | |
1668 | ||
1669 | ||
1670 | /* Return a list of windows in canonical ordering. Arguments are like | |
1671 | for `next-window'. */ | |
1672 | ||
1673 | static Lisp_Object | |
1674 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1675 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1676 | { |
1677 | Lisp_Object tail, list; | |
1678 | ||
1679 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1680 | list = Qnil; | |
1681 | ||
1682 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
118ea242 | 1683 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 GM |
1684 | list = Fcons (XCAR (tail), list); |
1685 | ||
118ea242 | 1686 | return Fnreverse (list); |
67492200 GM |
1687 | } |
1688 | ||
1689 | ||
7ab12479 JB |
1690 | \f |
1691 | /* Look at all windows, performing an operation specified by TYPE | |
1692 | with argument OBJ. | |
75d8f668 | 1693 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1694 | Qnil, look at just the selected frame; |
89bca612 | 1695 | Qvisible, look at visible frames; |
75d8f668 | 1696 | a frame, just look at windows on that frame. |
85fe3b5e | 1697 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1698 | |
1699 | enum window_loop | |
1700 | { | |
1701 | WINDOW_LOOP_UNUSED, | |
1702 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1703 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1704 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1705 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1706 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1707 | UNSHOW_BUFFER, /* Arg is buffer */ |
1708 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1709 | }; |
1710 | ||
1711 | static Lisp_Object | |
44fa5b1e | 1712 | window_loop (type, obj, mini, frames) |
7ab12479 | 1713 | enum window_loop type; |
118ea242 | 1714 | Lisp_Object obj, frames; |
7ab12479 JB |
1715 | int mini; |
1716 | { | |
118ea242 GM |
1717 | Lisp_Object window, windows, best_window, frame_arg; |
1718 | struct frame *f; | |
ffdc852d | 1719 | struct gcpro gcpro1; |
118ea242 | 1720 | |
44fa5b1e JB |
1721 | /* If we're only looping through windows on a particular frame, |
1722 | frame points to that frame. If we're looping through windows | |
1723 | on all frames, frame is 0. */ | |
1724 | if (FRAMEP (frames)) | |
118ea242 | 1725 | f = XFRAME (frames); |
44fa5b1e | 1726 | else if (NILP (frames)) |
118ea242 | 1727 | f = SELECTED_FRAME (); |
7ab12479 | 1728 | else |
118ea242 GM |
1729 | f = NULL; |
1730 | ||
1731 | if (f) | |
89bca612 | 1732 | frame_arg = Qlambda; |
f812f9c6 RS |
1733 | else if (XFASTINT (frames) == 0) |
1734 | frame_arg = frames; | |
89bca612 RS |
1735 | else if (EQ (frames, Qvisible)) |
1736 | frame_arg = frames; | |
118ea242 GM |
1737 | else |
1738 | frame_arg = Qt; | |
7ab12479 | 1739 | |
89bca612 RS |
1740 | /* frame_arg is Qlambda to stick to one frame, |
1741 | Qvisible to consider all visible frames, | |
1742 | or Qt otherwise. */ | |
1743 | ||
7ab12479 | 1744 | /* Pick a window to start with. */ |
017b2bad | 1745 | if (WINDOWP (obj)) |
118ea242 GM |
1746 | window = obj; |
1747 | else if (f) | |
1748 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1749 | else |
118ea242 | 1750 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1751 | |
cd2904bd | 1752 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1753 | GCPRO1 (windows); |
7ab12479 | 1754 | best_window = Qnil; |
118ea242 GM |
1755 | |
1756 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1757 | { |
118ea242 GM |
1758 | struct window *w; |
1759 | ||
1760 | window = XCAR (windows); | |
1761 | w = XWINDOW (window); | |
1762 | ||
1763 | /* Note that we do not pay attention here to whether the frame | |
1764 | is visible, since Fwindow_list skips non-visible frames if | |
1765 | that is desired, under the control of frame_arg. */ | |
1766 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1767 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1768 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1769 | || (mini && minibuf_level > 0)) |
1770 | switch (type) | |
1771 | { | |
1772 | case GET_BUFFER_WINDOW: | |
118ea242 | 1773 | if (EQ (w->buffer, obj) |
5c204627 RS |
1774 | /* Don't find any minibuffer window |
1775 | except the one that is currently in use. */ | |
118ea242 GM |
1776 | && (MINI_WINDOW_P (w) |
1777 | ? EQ (window, minibuf_window) | |
1778 | : 1)) | |
1779 | { | |
5ddc1b75 GM |
1780 | if (NILP (best_window)) |
1781 | best_window = window; | |
1782 | else if (EQ (window, selected_window)) | |
1783 | /* For compatibility with 20.x, prefer to return | |
1784 | selected-window. */ | |
1785 | best_window = window; | |
118ea242 | 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); | |
118ea242 GM |
1835 | Fset_window_buffer (window, buffer); |
1836 | if (EQ (window, selected_window)) | |
1837 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1838 | } |
1839 | else | |
118ea242 | 1840 | Fdelete_window (window); |
7ab12479 JB |
1841 | } |
1842 | break; | |
1843 | ||
1844 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1845 | { |
118ea242 | 1846 | /* Ignore dedicated windows and minibuffers. */ |
c930dfab | 1847 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
118ea242 GM |
1848 | break; |
1849 | ||
c930dfab | 1850 | if (NILP (best_window)) |
118ea242 | 1851 | best_window = window; |
c930dfab GM |
1852 | else |
1853 | { | |
1854 | struct window *b = XWINDOW (best_window); | |
1855 | if (XFASTINT (w->height) * XFASTINT (w->width) | |
1856 | > XFASTINT (b->height) * XFASTINT (b->width)) | |
1857 | best_window = window; | |
1858 | } | |
7ab12479 JB |
1859 | } |
1860 | break; | |
1861 | ||
1862 | case UNSHOW_BUFFER: | |
118ea242 | 1863 | if (EQ (w->buffer, obj)) |
7ab12479 | 1864 | { |
118ea242 GM |
1865 | Lisp_Object buffer; |
1866 | struct frame *f = XFRAME (w->frame); | |
1867 | ||
7ab12479 | 1868 | /* Find another buffer to show in this window. */ |
118ea242 | 1869 | buffer = Fother_buffer (obj, Qnil, w->frame); |
118ea242 | 1870 | |
38ab08d1 RS |
1871 | /* If this window is dedicated, and in a frame of its own, |
1872 | kill the frame. */ | |
118ea242 GM |
1873 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1874 | && !NILP (w->dedicated) | |
38ab08d1 | 1875 | && other_visible_frames (f)) |
45945a7b RS |
1876 | { |
1877 | /* Skip the other windows on this frame. | |
1878 | There might be one, the minibuffer! */ | |
118ea242 GM |
1879 | while (CONSP (XCDR (windows)) |
1880 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1881 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1882 | windows = XCDR (windows); | |
1883 | ||
45945a7b | 1884 | /* Now we can safely delete the frame. */ |
118ea242 | 1885 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1886 | } |
38ab08d1 | 1887 | else |
38ab08d1 RS |
1888 | { |
1889 | /* Otherwise show a different buffer in the window. */ | |
118ea242 GM |
1890 | w->dedicated = Qnil; |
1891 | Fset_window_buffer (window, buffer); | |
1892 | if (EQ (window, selected_window)) | |
1893 | Fset_buffer (w->buffer); | |
38ab08d1 | 1894 | } |
7ab12479 JB |
1895 | } |
1896 | break; | |
3f8ab7bd RS |
1897 | |
1898 | /* Check for a window that has a killed buffer. */ | |
1899 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1900 | if (! NILP (w->buffer) |
1901 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1902 | abort (); |
118ea242 | 1903 | break; |
6bbd7a29 GM |
1904 | |
1905 | case WINDOW_LOOP_UNUSED: | |
1906 | break; | |
7ab12479 | 1907 | } |
7ab12479 | 1908 | } |
7ab12479 | 1909 | |
118ea242 | 1910 | UNGCPRO; |
7ab12479 | 1911 | return best_window; |
37962e60 | 1912 | } |
605be8af | 1913 | |
3f8ab7bd RS |
1914 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1915 | ||
233a4a2c | 1916 | void |
3f8ab7bd RS |
1917 | check_all_windows () |
1918 | { | |
1919 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1920 | } | |
1921 | ||
7ab12479 | 1922 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
fdb82f93 PJ |
1923 | doc: /* Return the window least recently selected or used for display. |
1924 | If optional argument FRAME is `visible', search all visible frames. | |
1925 | If FRAME is 0, search all visible and iconified frames. | |
1926 | If FRAME is t, search all frames. | |
1927 | If FRAME is nil, search only the selected frame. | |
1928 | If FRAME is a frame, search only that frame. */) | |
1929 | (frame) | |
1930 | Lisp_Object frame; | |
7ab12479 JB |
1931 | { |
1932 | register Lisp_Object w; | |
1933 | /* First try for a window that is full-width */ | |
89bca612 | 1934 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1935 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1936 | return w; |
1937 | /* If none of them, try the rest */ | |
89bca612 | 1938 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1939 | } |
1940 | ||
1941 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
fdb82f93 PJ |
1942 | doc: /* Return the largest window in area. |
1943 | If optional argument FRAME is `visible', search all visible frames. | |
1944 | If FRAME is 0, search all visible and iconified frames. | |
1945 | If FRAME is t, search all frames. | |
1946 | If FRAME is nil, search only the selected frame. | |
1947 | If FRAME is a frame, search only that frame. */) | |
1948 | (frame) | |
1949 | Lisp_Object frame; | |
7ab12479 JB |
1950 | { |
1951 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1952 | frame); |
7ab12479 JB |
1953 | } |
1954 | ||
1955 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 PJ |
1956 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
1957 | If optional argument FRAME is `visible', search all visible frames. | |
1958 | If optional argument FRAME is 0, search all visible and iconified frames. | |
1959 | If FRAME is t, search all frames. | |
1960 | If FRAME is nil, search only the selected frame. | |
1961 | If FRAME is a frame, search only that frame. */) | |
1962 | (buffer, frame) | |
1963 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1964 | { |
1965 | buffer = Fget_buffer (buffer); | |
017b2bad | 1966 | if (BUFFERP (buffer)) |
44fa5b1e | 1967 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1968 | else |
1969 | return Qnil; | |
1970 | } | |
1971 | ||
1972 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
1973 | 0, 1, "", |
1974 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
1975 | Only the frame WINDOW is on is affected. | |
1976 | This function tries to reduce display jumps | |
1977 | by keeping the text previously visible in WINDOW | |
1978 | in the same place on the frame. Doing this depends on | |
1979 | the value of (window-start WINDOW), so if calling this function | |
1980 | in a program gives strange scrolling, make sure the window-start | |
1981 | value is reasonable when this function is called. */) | |
1982 | (window) | |
7ab12479 JB |
1983 | Lisp_Object window; |
1984 | { | |
1985 | struct window *w; | |
00d3d838 | 1986 | int startpos; |
85fe3b5e | 1987 | int top, new_top; |
7ab12479 | 1988 | |
265a9e55 | 1989 | if (NILP (window)) |
7ab12479 JB |
1990 | window = selected_window; |
1991 | else | |
b7826503 | 1992 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 1993 | w = XWINDOW (window); |
a2b38b3c | 1994 | |
00d3d838 | 1995 | startpos = marker_position (w->start); |
5500c422 | 1996 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 1997 | |
a2b38b3c RS |
1998 | if (MINI_WINDOW_P (w) && top > 0) |
1999 | error ("Can't expand minibuffer to full frame"); | |
2000 | ||
70728a80 | 2001 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2002 | |
00d3d838 KH |
2003 | /* Try to minimize scrolling, by setting the window start to the point |
2004 | will cause the text at the old window start to be at the same place | |
2005 | on the frame. But don't try to do this if the window start is | |
2006 | outside the visible portion (as might happen when the display is | |
2007 | not current, due to typeahead). */ | |
85fe3b5e GM |
2008 | new_top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
2009 | if (new_top != top | |
2010 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2011 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2012 | { | |
2013 | struct position pos; | |
2014 | struct buffer *obuf = current_buffer; | |
2015 | ||
2016 | Fset_buffer (w->buffer); | |
2017 | /* This computation used to temporarily move point, but that can | |
2018 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2019 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2020 | |
b73ea88e | 2021 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2022 | w->window_end_valid = Qnil; |
b73ea88e RS |
2023 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2024 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2025 | : Qnil); |
80622eec RS |
2026 | /* We need to do this, so that the window-scroll-functions |
2027 | get called. */ | |
4d047f50 | 2028 | w->optional_new_start = Qt; |
00d3d838 KH |
2029 | |
2030 | set_buffer_internal (obuf); | |
2031 | } | |
5500c422 | 2032 | |
7ab12479 JB |
2033 | return Qnil; |
2034 | } | |
2035 | ||
2036 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2037 | 1, 2, "bDelete windows on (buffer): ", |
2038 | doc: /* Delete all windows showing BUFFER. | |
2039 | Optional second argument FRAME controls which frames are affected. | |
2040 | If optional argument FRAME is `visible', search all visible frames. | |
2041 | If FRAME is 0, search all visible and iconified frames. | |
2042 | If FRAME is nil, search all frames. | |
2043 | If FRAME is t, search only the selected frame. | |
2044 | If FRAME is a frame, search only that frame. */) | |
2045 | (buffer, frame) | |
26f6279d | 2046 | Lisp_Object buffer, frame; |
7ab12479 | 2047 | { |
26f6279d JB |
2048 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2049 | expects. */ | |
c520265e RS |
2050 | if (NILP (frame)) |
2051 | frame = Qt; | |
2052 | else if (EQ (frame, Qt)) | |
2053 | frame = Qnil; | |
26f6279d | 2054 | |
265a9e55 | 2055 | if (!NILP (buffer)) |
7ab12479 JB |
2056 | { |
2057 | buffer = Fget_buffer (buffer); | |
b7826503 | 2058 | CHECK_BUFFER (buffer); |
26f6279d | 2059 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2060 | } |
5500c422 | 2061 | |
7ab12479 JB |
2062 | return Qnil; |
2063 | } | |
2064 | ||
2065 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2066 | Sreplace_buffer_in_windows, |
2067 | 1, 1, "bReplace buffer in windows: ", | |
2068 | doc: /* Replace BUFFER with some other buffer in all windows showing it. */) | |
2069 | (buffer) | |
7ab12479 JB |
2070 | Lisp_Object buffer; |
2071 | { | |
265a9e55 | 2072 | if (!NILP (buffer)) |
7ab12479 JB |
2073 | { |
2074 | buffer = Fget_buffer (buffer); | |
b7826503 | 2075 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2076 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2077 | } | |
2078 | return Qnil; | |
2079 | } | |
ff58478b RS |
2080 | |
2081 | /* Replace BUFFER with some other buffer in all windows | |
2082 | of all frames, even those on other keyboards. */ | |
2083 | ||
2084 | void | |
2085 | replace_buffer_in_all_windows (buffer) | |
2086 | Lisp_Object buffer; | |
2087 | { | |
27abb84f | 2088 | #ifdef MULTI_KBOARD |
ff58478b RS |
2089 | Lisp_Object tail, frame; |
2090 | ||
ff58478b RS |
2091 | /* A single call to window_loop won't do the job |
2092 | because it only considers frames on the current keyboard. | |
2093 | So loop manually over frames, and handle each one. */ | |
2094 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2095 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2096 | #else |
db7f721d | 2097 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2098 | #endif |
2099 | } | |
7ab12479 JB |
2100 | \f |
2101 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2102 | |
2103 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2104 | might crash Emacs. */ | |
5500c422 | 2105 | |
a481b3ea JB |
2106 | #define MIN_SAFE_WINDOW_WIDTH (2) |
2107 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
2108 | ||
2109 | /* Make sure that window_min_height and window_min_width are | |
2110 | not too small; if they are, set them to safe minima. */ | |
2111 | ||
2112 | static void | |
2113 | check_min_window_sizes () | |
2114 | { | |
2115 | /* Smaller values might permit a crash. */ | |
2116 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2117 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2118 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2119 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2120 | } | |
2121 | ||
2122 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2123 | minimum allowable size. */ | |
5500c422 | 2124 | |
605be8af | 2125 | void |
a481b3ea | 2126 | check_frame_size (frame, rows, cols) |
605be8af JB |
2127 | FRAME_PTR frame; |
2128 | int *rows, *cols; | |
a481b3ea | 2129 | { |
628df3bf | 2130 | /* For height, we have to see: |
37962e60 | 2131 | whether the frame has a minibuffer, |
628df3bf JB |
2132 | whether it wants a mode line, and |
2133 | whether it has a menu bar. */ | |
a481b3ea | 2134 | int min_height = |
79f92720 JB |
2135 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
2136 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 2137 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
2138 | |
2139 | if (FRAME_TOP_MARGIN (frame) > 0) | |
2140 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2141 | |
2142 | if (*rows < min_height) | |
2143 | *rows = min_height; | |
2144 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2145 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2146 | } | |
2147 | ||
c1636aa6 | 2148 | |
233a4a2c GM |
2149 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2150 | check if W's width can be changed, otherwise check W's height. | |
2151 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2152 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2153 | either. */ | |
c1636aa6 | 2154 | |
233a4a2c GM |
2155 | static int |
2156 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2157 | struct window *w; | |
2158 | int width_p, check_siblings_p; | |
2159 | { | |
2160 | int fixed_p; | |
2161 | struct window *c; | |
2162 | ||
2163 | if (!NILP (w->hchild)) | |
2164 | { | |
2165 | c = XWINDOW (w->hchild); | |
2166 | ||
2167 | if (width_p) | |
2168 | { | |
2169 | /* A horiz. combination is fixed-width if all of if its | |
2170 | children are. */ | |
2171 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2172 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2173 | fixed_p = c == NULL; | |
2174 | } | |
2175 | else | |
2176 | { | |
2177 | /* A horiz. combination is fixed-height if one of if its | |
2178 | children is. */ | |
2179 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2180 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2181 | fixed_p = c != NULL; | |
2182 | } | |
2183 | } | |
2184 | else if (!NILP (w->vchild)) | |
2185 | { | |
2186 | c = XWINDOW (w->vchild); | |
2187 | ||
2188 | if (width_p) | |
2189 | { | |
2190 | /* A vert. combination is fixed-width if one of if its | |
2191 | children is. */ | |
2192 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2193 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2194 | fixed_p = c != NULL; | |
2195 | } | |
2196 | else | |
2197 | { | |
2198 | /* A vert. combination is fixed-height if all of if its | |
2199 | children are. */ | |
2200 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2201 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2202 | fixed_p = c == NULL; | |
2203 | } | |
2204 | } | |
2205 | else if (BUFFERP (w->buffer)) | |
2206 | { | |
a34dfd12 GM |
2207 | if (w->height_fixed_p && !width_p) |
2208 | fixed_p = 1; | |
2209 | else | |
233a4a2c | 2210 | { |
a34dfd12 GM |
2211 | struct buffer *old = current_buffer; |
2212 | Lisp_Object val; | |
2213 | ||
2214 | current_buffer = XBUFFER (w->buffer); | |
2215 | val = find_symbol_value (Qwindow_size_fixed); | |
2216 | current_buffer = old; | |
2217 | ||
2218 | fixed_p = 0; | |
2219 | if (!EQ (val, Qunbound)) | |
2220 | { | |
2221 | fixed_p = !NILP (val); | |
2222 | ||
2223 | if (fixed_p | |
2224 | && ((EQ (val, Qheight) && width_p) | |
2225 | || (EQ (val, Qwidth) && !width_p))) | |
2226 | fixed_p = 0; | |
2227 | } | |
233a4a2c GM |
2228 | } |
2229 | ||
2230 | /* Can't tell if this one is resizable without looking at | |
2231 | siblings. If all siblings are fixed-size this one is too. */ | |
2232 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2233 | { | |
2234 | Lisp_Object child; | |
2235 | ||
2236 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2237 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2238 | break; | |
2239 | ||
2240 | if (NILP (child)) | |
2241 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2242 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2243 | break; | |
2244 | ||
2245 | if (NILP (child)) | |
2246 | fixed_p = 1; | |
2247 | } | |
2248 | } | |
2249 | else | |
2250 | fixed_p = 1; | |
2251 | ||
2252 | return fixed_p; | |
2253 | } | |
2254 | ||
2255 | ||
2256 | /* Return the minimum size of window W, not taking fixed-width windows | |
2257 | into account. WIDTH_P non-zero means return the minimum width, | |
2258 | otherwise return the minimum height. If W is a combination window, | |
2259 | compute the minimum size from the minimum sizes of W's children. */ | |
2260 | ||
2261 | static int | |
2262 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2263 | struct window *w; |
2264 | int width_p; | |
2265 | { | |
233a4a2c | 2266 | struct window *c; |
c1636aa6 GM |
2267 | int size; |
2268 | ||
233a4a2c GM |
2269 | if (!NILP (w->hchild)) |
2270 | { | |
2271 | c = XWINDOW (w->hchild); | |
2272 | size = 0; | |
2273 | ||
2274 | if (width_p) | |
2275 | { | |
2276 | /* The min width of a horizontal combination is | |
2277 | the sum of the min widths of its children. */ | |
2278 | while (c) | |
2279 | { | |
2280 | size += window_min_size_1 (c, width_p); | |
2281 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2282 | } | |
2283 | } | |
2284 | else | |
2285 | { | |
2286 | /* The min height a horizontal combination equals | |
2287 | the maximum of all min height of its children. */ | |
2288 | while (c) | |
2289 | { | |
2290 | int min_size = window_min_size_1 (c, width_p); | |
2291 | size = max (min_size, size); | |
2292 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2293 | } | |
2294 | } | |
2295 | } | |
2296 | else if (!NILP (w->vchild)) | |
2297 | { | |
2298 | c = XWINDOW (w->vchild); | |
2299 | size = 0; | |
2300 | ||
2301 | if (width_p) | |
2302 | { | |
2303 | /* The min width of a vertical combination is | |
2304 | the maximum of the min widths of its children. */ | |
2305 | while (c) | |
2306 | { | |
2307 | int min_size = window_min_size_1 (c, width_p); | |
2308 | size = max (min_size, size); | |
2309 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2310 | } | |
2311 | } | |
2312 | else | |
2313 | { | |
2314 | /* The min height of a vertical combination equals | |
2315 | the sum of the min height of its children. */ | |
2316 | while (c) | |
2317 | { | |
2318 | size += window_min_size_1 (c, width_p); | |
2319 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2320 | } | |
2321 | } | |
2322 | } | |
c1636aa6 GM |
2323 | else |
2324 | { | |
233a4a2c GM |
2325 | if (width_p) |
2326 | size = window_min_width; | |
c1636aa6 | 2327 | else |
233a4a2c GM |
2328 | { |
2329 | if (MINI_WINDOW_P (w) | |
2330 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2331 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2332 | size = 1; |
2333 | else | |
2334 | size = window_min_height; | |
2335 | } | |
c1636aa6 GM |
2336 | } |
2337 | ||
2338 | return size; | |
2339 | } | |
2340 | ||
2341 | ||
233a4a2c GM |
2342 | /* Return the minimum size of window W, taking fixed-size windows into |
2343 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2344 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2345 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2346 | unless FIXED is null. */ | |
7ab12479 | 2347 | |
233a4a2c | 2348 | static int |
f984d4fc | 2349 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2350 | struct window *w; |
f984d4fc | 2351 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2352 | { |
2353 | int size, fixed_p; | |
2354 | ||
f984d4fc GM |
2355 | if (ignore_fixed_p) |
2356 | fixed_p = 0; | |
2357 | else | |
2358 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2359 | ||
233a4a2c GM |
2360 | if (fixed) |
2361 | *fixed = fixed_p; | |
2362 | ||
2363 | if (fixed_p) | |
2364 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2365 | else | |
2366 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2367 | |
233a4a2c GM |
2368 | return size; |
2369 | } | |
2370 | ||
2371 | ||
2372 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2373 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2374 | keep their proportionate size relative to WINDOW. Propagate | |
2375 | WINDOW's top or left edge position to children. Delete windows | |
2376 | that become too small unless NODELETE_P is non-zero. */ | |
2377 | ||
2378 | static void | |
2379 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2380 | Lisp_Object window; |
233a4a2c | 2381 | int size, width_p, nodelete_p; |
7ab12479 | 2382 | { |
233a4a2c GM |
2383 | struct window *w = XWINDOW (window); |
2384 | struct window *c; | |
2385 | Lisp_Object child, *forward, *sideward; | |
2386 | int old_size, min_size; | |
7ab12479 | 2387 | |
a481b3ea | 2388 | check_min_window_sizes (); |
7ae2f10f | 2389 | size = max (0, size); |
233a4a2c | 2390 | |
b5f05b50 GM |
2391 | /* If the window has been "too small" at one point, |
2392 | don't delete it for being "too small" in the future. | |
2393 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2394 | if (width_p) |
2395 | { | |
8b6d9dc9 | 2396 | old_size = XINT (w->width); |
233a4a2c GM |
2397 | min_size = window_min_width; |
2398 | } | |
2399 | else | |
2400 | { | |
8b6d9dc9 | 2401 | old_size = XINT (w->height); |
233a4a2c GM |
2402 | min_size = window_min_height; |
2403 | } | |
2404 | ||
f18625cd | 2405 | if (old_size < min_size) |
b5f05b50 GM |
2406 | w->too_small_ok = Qt; |
2407 | ||
233a4a2c GM |
2408 | /* Maybe delete WINDOW if it's too small. */ |
2409 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2410 | { |
b5f05b50 | 2411 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2412 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2413 | else |
233a4a2c | 2414 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2415 | |
233a4a2c | 2416 | if (size < min_size) |
c1636aa6 GM |
2417 | { |
2418 | delete_window (window); | |
2419 | return; | |
2420 | } | |
7ab12479 JB |
2421 | } |
2422 | ||
233a4a2c | 2423 | /* Set redisplay hints. */ |
7ae2f10f GM |
2424 | w->last_modified = make_number (0); |
2425 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2426 | windows_or_buffers_changed++; |
7ae2f10f | 2427 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2428 | |
233a4a2c GM |
2429 | if (width_p) |
2430 | { | |
2431 | sideward = &w->vchild; | |
2432 | forward = &w->hchild; | |
7ae2f10f | 2433 | w->width = make_number (size); |
233a4a2c GM |
2434 | } |
2435 | else | |
2436 | { | |
2437 | sideward = &w->hchild; | |
2438 | forward = &w->vchild; | |
7ae2f10f | 2439 | w->height = make_number (size); |
0130fe1a | 2440 | w->orig_height = Qnil; |
233a4a2c GM |
2441 | } |
2442 | ||
2443 | if (!NILP (*sideward)) | |
7ab12479 | 2444 | { |
233a4a2c | 2445 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2446 | { |
233a4a2c GM |
2447 | c = XWINDOW (child); |
2448 | if (width_p) | |
2449 | c->left = w->left; | |
2450 | else | |
2451 | c->top = w->top; | |
2452 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2453 | } |
2454 | } | |
233a4a2c | 2455 | else if (!NILP (*forward)) |
7ab12479 | 2456 | { |
233a4a2c GM |
2457 | int fixed_size, each, extra, n; |
2458 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2459 | int last_pos, first_pos, nchildren, total; |
233a4a2c GM |
2460 | |
2461 | /* Determine the fixed-size portion of the this window, and the | |
2462 | number of child windows. */ | |
8b6d9dc9 | 2463 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2464 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2465 | { |
8b6d9dc9 GM |
2466 | int child_size; |
2467 | ||
7ab12479 | 2468 | c = XWINDOW (child); |
8b6d9dc9 GM |
2469 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
2470 | total += child_size; | |
2471 | ||
233a4a2c GM |
2472 | if (window_fixed_size_p (c, width_p, 0)) |
2473 | { | |
8b6d9dc9 | 2474 | fixed_size += child_size; |
233a4a2c GM |
2475 | ++nfixed; |
2476 | } | |
2477 | } | |
7ab12479 | 2478 | |
233a4a2c GM |
2479 | /* If the new size is smaller than fixed_size, or if there |
2480 | aren't any resizable windows, allow resizing fixed-size | |
2481 | windows. */ | |
2482 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2483 | ||
2484 | /* Compute how many lines/columns to add to each child. The | |
2485 | value of extra takes care of rounding errors. */ | |
2486 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
8b6d9dc9 GM |
2487 | each = (size - total) / n; |
2488 | extra = (size - total) - n * each; | |
233a4a2c GM |
2489 | |
2490 | /* Compute new children heights and edge positions. */ | |
8b6d9dc9 | 2491 | first_pos = width_p ? XINT (w->left) : XINT (w->top); |
233a4a2c GM |
2492 | last_pos = first_pos; |
2493 | for (child = *forward; !NILP (child); child = c->next) | |
2494 | { | |
2495 | int new_size, old_size; | |
2496 | ||
2497 | c = XWINDOW (child); | |
2498 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2499 | new_size = old_size; | |
7ab12479 | 2500 | |
233a4a2c GM |
2501 | /* The top or left edge position of this child equals the |
2502 | bottom or right edge of its predecessor. */ | |
2503 | if (width_p) | |
2504 | c->left = make_number (last_pos); | |
2505 | else | |
2506 | c->top = make_number (last_pos); | |
7ab12479 | 2507 | |
233a4a2c GM |
2508 | /* If this child can be resized, do it. */ |
2509 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2510 | { | |
2511 | new_size = old_size + each + extra; | |
2512 | extra = 0; | |
2513 | } | |
2514 | ||
2515 | /* Set new height. Note that size_window also propagates | |
2516 | edge positions to children, so it's not a no-op if we | |
2517 | didn't change the child's size. */ | |
2518 | size_window (child, new_size, width_p, 1); | |
2519 | ||
2520 | /* Remember the bottom/right edge position of this child; it | |
2521 | will be used to set the top/left edge of the next child. */ | |
2522 | last_pos += new_size; | |
7ab12479 | 2523 | } |
233a4a2c GM |
2524 | |
2525 | /* We should have covered the parent exactly with child windows. */ | |
2526 | xassert (size == last_pos - first_pos); | |
2527 | ||
7ab12479 | 2528 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2529 | if (!nodelete_p) |
2530 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2531 | { |
233a4a2c GM |
2532 | int child_size; |
2533 | c = XWINDOW (child); | |
8b6d9dc9 | 2534 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
233a4a2c | 2535 | size_window (child, child_size, width_p, 0); |
7ab12479 JB |
2536 | } |
2537 | } | |
2538 | } | |
2539 | ||
233a4a2c GM |
2540 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2541 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2542 | that become too small in the process. (The caller should check | |
2543 | later and do so if appropriate.) */ | |
7ab12479 | 2544 | |
5e14b1fc | 2545 | void |
233a4a2c | 2546 | set_window_height (window, height, nodelete) |
7ab12479 | 2547 | Lisp_Object window; |
233a4a2c | 2548 | int height; |
7ab12479 JB |
2549 | int nodelete; |
2550 | { | |
233a4a2c GM |
2551 | size_window (window, height, 0, nodelete); |
2552 | } | |
7ab12479 | 2553 | |
7ab12479 | 2554 | |
233a4a2c GM |
2555 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2556 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2557 | that become too small in the process. (The caller should check | |
2558 | later and do so if appropriate.) */ | |
7ab12479 | 2559 | |
233a4a2c GM |
2560 | void |
2561 | set_window_width (window, width, nodelete) | |
2562 | Lisp_Object window; | |
2563 | int width; | |
2564 | int nodelete; | |
2565 | { | |
2566 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2567 | } |
233a4a2c | 2568 | |
7ab12479 | 2569 | \f |
1d8d96fa | 2570 | int window_select_count; |
7ab12479 | 2571 | |
5b03d3c0 RS |
2572 | Lisp_Object |
2573 | Fset_window_buffer_unwind (obuf) | |
2574 | Lisp_Object obuf; | |
2575 | { | |
2576 | Fset_buffer (obuf); | |
2577 | return Qnil; | |
2578 | } | |
2579 | ||
7ab12479 | 2580 | |
5500c422 GM |
2581 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2582 | means it's allowed to run hooks. See make_frame for a case where | |
2583 | it's not allowed. */ | |
7ab12479 | 2584 | |
5500c422 GM |
2585 | void |
2586 | set_window_buffer (window, buffer, run_hooks_p) | |
2587 | Lisp_Object window, buffer; | |
2588 | int run_hooks_p; | |
2589 | { | |
2590 | struct window *w = XWINDOW (window); | |
2591 | struct buffer *b = XBUFFER (buffer); | |
2592 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2593 | |
2594 | w->buffer = buffer; | |
86e48436 RS |
2595 | |
2596 | if (EQ (window, selected_window)) | |
5500c422 | 2597 | b->last_selected_window = window; |
beb4e312 RS |
2598 | |
2599 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2600 | if (INTEGERP (b->display_count)) |
2601 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2602 | b->display_time = Fcurrent_time (); | |
86e48436 | 2603 | |
d834a2e9 | 2604 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2605 | XSETFASTINT (w->window_end_vpos, 0); |
2606 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2607 | w->window_end_valid = Qnil; |
1c686c99 | 2608 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 2609 | w->vscroll = 0; |
5500c422 | 2610 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2611 | set_marker_restricted (w->start, |
5500c422 | 2612 | make_number (b->last_window_start), |
7ab12479 JB |
2613 | buffer); |
2614 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2615 | w->force_start = Qnil; |
d834a2e9 | 2616 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2617 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2618 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2619 | |
2620 | /* We must select BUFFER for running the window-scroll-functions. | |
2621 | If WINDOW is selected, switch permanently. | |
2622 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2623 | if (EQ (window, selected_window)) |
2624 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2625 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2626 | because that might itself be a local variable. */ | |
2627 | else if (window_initialized) | |
2628 | { | |
2629 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2630 | Fset_buffer (buffer); | |
2631 | } | |
2632 | ||
5500c422 | 2633 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2634 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2635 | |
5500c422 GM |
2636 | if (run_hooks_p) |
2637 | { | |
2638 | if (! NILP (Vwindow_scroll_functions)) | |
2639 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2640 | Fmarker_position (w->start)); | |
2641 | ||
2642 | if (! NILP (Vwindow_configuration_change_hook) | |
2643 | && ! NILP (Vrun_hooks)) | |
2644 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2645 | } | |
543f5fb1 | 2646 | |
5b03d3c0 | 2647 | unbind_to (count, Qnil); |
5500c422 | 2648 | } |
5b03d3c0 | 2649 | |
5500c422 GM |
2650 | |
2651 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
fdb82f93 PJ |
2652 | doc: /* Make WINDOW display BUFFER as its contents. |
2653 | BUFFER can be a buffer or buffer name. */) | |
2654 | (window, buffer) | |
5500c422 GM |
2655 | register Lisp_Object window, buffer; |
2656 | { | |
2657 | register Lisp_Object tem; | |
2658 | register struct window *w = decode_window (window); | |
5500c422 | 2659 | |
bed0c171 | 2660 | XSETWINDOW (window, w); |
5500c422 | 2661 | buffer = Fget_buffer (buffer); |
b7826503 | 2662 | CHECK_BUFFER (buffer); |
5500c422 GM |
2663 | |
2664 | if (NILP (XBUFFER (buffer)->name)) | |
2665 | error ("Attempt to display deleted buffer"); | |
2666 | ||
2667 | tem = w->buffer; | |
2668 | if (NILP (tem)) | |
2669 | error ("Window is deleted"); | |
2670 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2671 | is first being set up. */ | |
2672 | { | |
2673 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2674 | error ("Window is dedicated to `%s'", | |
2675 | XSTRING (XBUFFER (tem)->name)->data); | |
2676 | ||
2677 | unshow_buffer (w); | |
2678 | } | |
2679 | ||
2680 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2681 | return Qnil; |
2682 | } | |
2683 | ||
2684 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
fdb82f93 PJ |
2685 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
2686 | If WINDOW is not already selected, also make WINDOW's buffer current. | |
2687 | Note that the main editor command loop | |
2688 | selects the buffer of the selected window before each command. */) | |
2689 | (window) | |
7ab12479 | 2690 | register Lisp_Object window; |
b7354ddf RS |
2691 | { |
2692 | return select_window_1 (window, 1); | |
2693 | } | |
2694 | \f | |
719eaeb1 GM |
2695 | /* Note that selected_window can be nil |
2696 | when this is called from Fset_window_configuration. */ | |
2697 | ||
b7354ddf RS |
2698 | static Lisp_Object |
2699 | select_window_1 (window, recordflag) | |
2700 | register Lisp_Object window; | |
2701 | int recordflag; | |
7ab12479 JB |
2702 | { |
2703 | register struct window *w; | |
719eaeb1 | 2704 | register struct window *ow; |
1ae1a37d | 2705 | struct frame *sf; |
7ab12479 | 2706 | |
b7826503 | 2707 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
2708 | |
2709 | w = XWINDOW (window); | |
50e88778 | 2710 | w->frozen_window_start_p = 0; |
7ab12479 | 2711 | |
d834a2e9 | 2712 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2713 | if (EQ (window, selected_window)) |
2714 | return window; | |
2715 | ||
719eaeb1 GM |
2716 | if (!NILP (selected_window)) |
2717 | { | |
2718 | ow = XWINDOW (selected_window); | |
2719 | if (! NILP (ow->buffer)) | |
2720 | set_marker_both (ow->pointm, ow->buffer, | |
2721 | BUF_PT (XBUFFER (ow->buffer)), | |
2722 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2723 | } | |
7ab12479 JB |
2724 | |
2725 | selected_window = window; | |
1ae1a37d GM |
2726 | sf = SELECTED_FRAME (); |
2727 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2728 | { |
44fa5b1e | 2729 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2730 | /* Use this rather than Fhandle_switch_frame |
2731 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2732 | move around in the state where a minibuffer in a separate | |
2733 | frame is active. */ | |
2734 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2735 | } |
2736 | else | |
1ae1a37d | 2737 | sf->selected_window = window; |
7ab12479 | 2738 | |
b7354ddf RS |
2739 | if (recordflag) |
2740 | record_buffer (w->buffer); | |
7ab12479 JB |
2741 | Fset_buffer (w->buffer); |
2742 | ||
86e48436 RS |
2743 | XBUFFER (w->buffer)->last_selected_window = window; |
2744 | ||
7ab12479 JB |
2745 | /* Go to the point recorded in the window. |
2746 | This is important when the buffer is in more | |
2747 | than one window. It also matters when | |
2748 | redisplay_window has altered point after scrolling, | |
2749 | because it makes the change only in the window. */ | |
2750 | { | |
2751 | register int new_point = marker_position (w->pointm); | |
2752 | if (new_point < BEGV) | |
2753 | SET_PT (BEGV); | |
a9c95e08 | 2754 | else if (new_point > ZV) |
7ab12479 JB |
2755 | SET_PT (ZV); |
2756 | else | |
2757 | SET_PT (new_point); | |
2758 | } | |
2759 | ||
2760 | windows_or_buffers_changed++; | |
2761 | return window; | |
2762 | } | |
b7354ddf | 2763 | \f |
441a127e RS |
2764 | /* Deiconify the frame containing the window WINDOW, |
2765 | unless it is the selected frame; | |
2766 | then return WINDOW. | |
2767 | ||
2768 | The reason for the exception for the selected frame | |
2769 | is that it seems better not to change the selected frames visibility | |
2770 | merely because of displaying a different buffer in it. | |
2771 | The deiconification is useful when a buffer gets shown in | |
2772 | another frame that you were not using lately. */ | |
d07f802a RS |
2773 | |
2774 | static Lisp_Object | |
2775 | display_buffer_1 (window) | |
2776 | Lisp_Object window; | |
2777 | { | |
1ae1a37d GM |
2778 | Lisp_Object frame = XWINDOW (window)->frame; |
2779 | FRAME_PTR f = XFRAME (frame); | |
2780 | ||
d07f802a | 2781 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2782 | |
2783 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2784 | { |
2785 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2786 | Fmake_frame_visible (frame); |
37962e60 | 2787 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2788 | Fraise_frame (frame); |
60117126 | 2789 | } |
1ae1a37d | 2790 | |
d07f802a RS |
2791 | return window; |
2792 | } | |
2793 | ||
4628f7a4 | 2794 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
fdb82f93 PJ |
2795 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would be created specially. |
2796 | The value is actually t if the frame should be called with default frame | |
2797 | parameters, and a list of frame parameters if they were specified. | |
2798 | See `special-display-buffer-names', and `special-display-regexps'. */) | |
2799 | (buffer_name) | |
4628f7a4 EN |
2800 | Lisp_Object buffer_name; |
2801 | { | |
2802 | Lisp_Object tem; | |
2803 | ||
b7826503 | 2804 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2805 | |
2806 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2807 | if (!NILP (tem)) | |
2808 | return Qt; | |
2809 | ||
2810 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2811 | if (!NILP (tem)) | |
2812 | return XCDR (tem); | |
2813 | ||
2814 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2815 | { | |
2816 | Lisp_Object car = XCAR (tem); | |
2817 | if (STRINGP (car) | |
2818 | && fast_string_match (car, buffer_name) >= 0) | |
2819 | return Qt; | |
2820 | else if (CONSP (car) | |
2821 | && STRINGP (XCAR (car)) | |
2822 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2823 | return XCDR (car); |
4628f7a4 EN |
2824 | } |
2825 | return Qnil; | |
2826 | } | |
2827 | ||
2828 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
fdb82f93 PJ |
2829 | doc: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window. |
2830 | See `same-window-buffer-names' and `same-window-regexps'. */) | |
2831 | (buffer_name) | |
4628f7a4 EN |
2832 | Lisp_Object buffer_name; |
2833 | { | |
2834 | Lisp_Object tem; | |
2835 | ||
b7826503 | 2836 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2837 | |
2838 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2839 | if (!NILP (tem)) | |
2840 | return Qt; | |
2841 | ||
2842 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2843 | if (!NILP (tem)) | |
2844 | return Qt; | |
2845 | ||
2846 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2847 | { | |
2848 | Lisp_Object car = XCAR (tem); | |
2849 | if (STRINGP (car) | |
2850 | && fast_string_match (car, buffer_name) >= 0) | |
2851 | return Qt; | |
2852 | else if (CONSP (car) | |
2853 | && STRINGP (XCAR (car)) | |
2854 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2855 | return Qt; | |
2856 | } | |
2857 | return Qnil; | |
2858 | } | |
2859 | ||
fdb82f93 | 2860 | /* Use B so the default is (other-buffer). */ |
53f76081 | 2861 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
2862 | "BDisplay buffer: \nP", |
2863 | doc: /* Make BUFFER appear in some window but don't select it. | |
2864 | BUFFER can be a buffer or a buffer name. | |
2865 | If BUFFER is shown already in some window, just use that one, | |
2866 | unless the window is the selected window and the optional second | |
2867 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
2868 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
2869 | Returns the window displaying BUFFER. | |
2870 | If `display-reuse-frames' is non-nil, and another frame is currently | |
2871 | displaying BUFFER, then simply raise that frame. | |
2872 | ||
2873 | The variables `special-display-buffer-names', `special-display-regexps', | |
2874 | `same-window-buffer-names', and `same-window-regexps' customize how certain | |
2875 | buffer names are handled. | |
2876 | ||
2877 | If optional argument FRAME is `visible', search all visible frames. | |
2878 | If FRAME is 0, search all visible and iconified frames. | |
2879 | If FRAME is t, search all frames. | |
2880 | If FRAME is a frame, search only that frame. | |
2881 | If FRAME is nil, search only the selected frame | |
2882 | (actually the last nonminibuffer frame), | |
2883 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
2884 | which means search visible and iconified frames. | |
2885 | ||
2886 | If `even-window-heights' is non-nil, window heights will be evened out | |
2887 | if displaying the buffer causes two vertically adjacent windows to be | |
2888 | displayed. */) | |
2889 | (buffer, not_this_window, frame) | |
53f76081 | 2890 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 2891 | { |
aee631c2 | 2892 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2893 | struct frame *f; |
7ab12479 | 2894 | |
aee631c2 | 2895 | swp = Qnil; |
7ab12479 | 2896 | buffer = Fget_buffer (buffer); |
b7826503 | 2897 | CHECK_BUFFER (buffer); |
7ab12479 | 2898 | |
265a9e55 | 2899 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2900 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2901 | ||
265a9e55 | 2902 | if (NILP (not_this_window) |
7ab12479 | 2903 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2904 | return display_buffer_1 (selected_window); |
7ab12479 | 2905 | |
855d8627 RS |
2906 | /* See if the user has specified this buffer should appear |
2907 | in the selected window. */ | |
2908 | if (NILP (not_this_window)) | |
2909 | { | |
aee631c2 RS |
2910 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2911 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2912 | { |
2913 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2914 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2915 | } |
855d8627 RS |
2916 | } |
2917 | ||
9c3da604 | 2918 | /* If the user wants pop-up-frames or display-reuse-frames, then |
73dc5198 KH |
2919 | look for a window showing BUFFER on any visible or iconified frame. |
2920 | Otherwise search only the current frame. */ | |
53f76081 RS |
2921 | if (! NILP (frame)) |
2922 | tem = frame; | |
9c3da604 GM |
2923 | else if (pop_up_frames |
2924 | || display_buffer_reuse_frames | |
2925 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2926 | XSETFASTINT (tem, 0); |
2927 | else | |
73dc5198 | 2928 | XSETFRAME (tem, last_nonminibuf_frame); |
9c3da604 | 2929 | |
73dc5198 | 2930 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
2931 | if (!NILP (window) |
2932 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 2933 | return display_buffer_1 (window); |
7ab12479 | 2934 | |
a90712c2 | 2935 | /* Certain buffer names get special handling. */ |
aee631c2 | 2936 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2937 | { |
4628f7a4 EN |
2938 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2939 | if (EQ (tem, Qt)) | |
a90712c2 | 2940 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2941 | if (CONSP (tem)) |
2942 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2943 | } |
2944 | ||
44fa5b1e JB |
2945 | /* If there are no frames open that have more than a minibuffer, |
2946 | we need to create a new frame. */ | |
2947 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2948 | { |
a90712c2 | 2949 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2950 | Fset_window_buffer (window, buffer); |
d07f802a | 2951 | return display_buffer_1 (window); |
7ab12479 | 2952 | } |
7ab12479 | 2953 | |
1ae1a37d | 2954 | f = SELECTED_FRAME (); |
43bad991 | 2955 | if (pop_up_windows |
1ae1a37d | 2956 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2957 | /* If the current frame is a special display frame, |
2958 | don't try to reuse its windows. */ | |
1ae1a37d | 2959 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2960 | { |
12cae7c0 KH |
2961 | Lisp_Object frames; |
2962 | ||
37962e60 | 2963 | frames = Qnil; |
1ae1a37d | 2964 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2965 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2966 | /* Don't try to create a window if would get an error */ |
2967 | if (split_height_threshold < window_min_height << 1) | |
2968 | split_height_threshold = window_min_height << 1; | |
2969 | ||
cee67da9 RS |
2970 | /* Note that both Fget_largest_window and Fget_lru_window |
2971 | ignore minibuffers and dedicated windows. | |
2972 | This means they can return nil. */ | |
7ab12479 | 2973 | |
cee67da9 RS |
2974 | /* If the frame we would try to split cannot be split, |
2975 | try other frames. */ | |
1ae1a37d | 2976 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
2977 | { |
2978 | /* Try visible frames first. */ | |
2979 | window = Fget_largest_window (Qvisible); | |
2980 | /* If that didn't work, try iconified frames. */ | |
2981 | if (NILP (window)) | |
2982 | window = Fget_largest_window (make_number (0)); | |
2983 | if (NILP (window)) | |
2984 | window = Fget_largest_window (Qt); | |
2985 | } | |
2986 | else | |
2987 | window = Fget_largest_window (frames); | |
2988 | ||
92cca945 RS |
2989 | /* If we got a tall enough full-width window that can be split, |
2990 | split it. */ | |
265a9e55 | 2991 | if (!NILP (window) |
92cca945 | 2992 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2993 | && window_height (window) >= split_height_threshold |
111e5992 | 2994 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2995 | window = Fsplit_window (window, Qnil, Qnil); |
2996 | else | |
2997 | { | |
1942f68f RS |
2998 | Lisp_Object upper, lower, other; |
2999 | ||
44fa5b1e | 3000 | window = Fget_lru_window (frames); |
92cca945 RS |
3001 | /* If the LRU window is selected, and big enough, |
3002 | and can be split, split it. */ | |
cee67da9 | 3003 | if (!NILP (window) |
92cca945 | 3004 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3005 | && (EQ (window, selected_window) |
3006 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3007 | && window_height (window) >= window_min_height << 1) |
3008 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3009 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3010 | |
cee67da9 | 3011 | /* Try visible frames first. */ |
48d9379d RS |
3012 | if (NILP (window)) |
3013 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3014 | if (NILP (window)) |
3015 | window = Fget_largest_window (Qvisible); | |
3016 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3017 | if (NILP (window)) |
3018 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3019 | if (NILP (window)) |
3020 | window = Fget_largest_window (make_number (0)); | |
3021 | /* Try invisible frames. */ | |
48d9379d RS |
3022 | if (NILP (window)) |
3023 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3024 | if (NILP (window)) |
3025 | window = Fget_largest_window (Qt); | |
3026 | /* As a last resort, make a new frame. */ | |
3027 | if (NILP (window)) | |
3028 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3029 | /* If window appears above or below another, |
3030 | even out their heights. */ | |
cac66e4f | 3031 | other = upper = lower = Qnil; |
1942f68f RS |
3032 | if (!NILP (XWINDOW (window)->prev)) |
3033 | other = upper = XWINDOW (window)->prev, lower = window; | |
3034 | if (!NILP (XWINDOW (window)->next)) | |
3035 | other = lower = XWINDOW (window)->next, upper = window; | |
3036 | if (!NILP (other) | |
6529ed87 | 3037 | && !NILP (Veven_window_heights) |
1942f68f | 3038 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
296b535c KH |
3039 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
3040 | && (XFASTINT (XWINDOW (other)->height) | |
3041 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 3042 | { |
296b535c KH |
3043 | int total = (XFASTINT (XWINDOW (other)->height) |
3044 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
3045 | enlarge_window (upper, |
3046 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 3047 | 0); |
1942f68f | 3048 | } |
7ab12479 JB |
3049 | } |
3050 | } | |
3051 | else | |
3052 | window = Fget_lru_window (Qnil); | |
3053 | ||
3054 | Fset_window_buffer (window, buffer); | |
d07f802a | 3055 | return display_buffer_1 (window); |
7ab12479 JB |
3056 | } |
3057 | ||
3058 | void | |
3059 | temp_output_buffer_show (buf) | |
3060 | register Lisp_Object buf; | |
3061 | { | |
3062 | register struct buffer *old = current_buffer; | |
3063 | register Lisp_Object window; | |
3064 | register struct window *w; | |
3065 | ||
bccd3dd1 RS |
3066 | XBUFFER (buf)->directory = current_buffer->directory; |
3067 | ||
7ab12479 | 3068 | Fset_buffer (buf); |
c6367666 | 3069 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3070 | BEGV = BEG; |
3071 | ZV = Z; | |
3072 | SET_PT (BEG); | |
b1599b4c | 3073 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
3074 | set_buffer_internal (old); |
3075 | ||
3076 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3077 | call1 (Vtemp_buffer_show_function, buf); | |
3078 | else | |
3079 | { | |
53f76081 | 3080 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3081 | |
1ae1a37d | 3082 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3083 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3084 | Vminibuf_scroll_window = window; |
3085 | w = XWINDOW (window); | |
d834a2e9 | 3086 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3087 | XSETFASTINT (w->min_hscroll, 0); |
b73ea88e RS |
3088 | set_marker_restricted_both (w->start, buf, 1, 1); |
3089 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3090 | |
beb4e312 RS |
3091 | /* Run temp-buffer-show-hook, with the chosen window selected |
3092 | and it sbuffer current. */ | |
f52cca03 | 3093 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3094 | { |
f52cca03 RS |
3095 | Lisp_Object tem; |
3096 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3097 | if (!NILP (tem)) |
3098 | { | |
f52cca03 RS |
3099 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3100 | if (!NILP (tem)) | |
3101 | { | |
3102 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
3103 | Lisp_Object prev_window; |
3104 | prev_window = selected_window; | |
2cccc823 | 3105 | |
f52cca03 | 3106 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 3107 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 3108 | select_window_1 (window, 0); |
beb4e312 | 3109 | Fset_buffer (w->buffer); |
f52cca03 | 3110 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 3111 | select_window_1 (prev_window, 0); |
f52cca03 RS |
3112 | unbind_to (count, Qnil); |
3113 | } | |
2cccc823 RS |
3114 | } |
3115 | } | |
3116 | } | |
7ab12479 JB |
3117 | } |
3118 | \f | |
dfcf069d | 3119 | static void |
7ab12479 JB |
3120 | make_dummy_parent (window) |
3121 | Lisp_Object window; | |
3122 | { | |
cffec418 | 3123 | Lisp_Object new; |
7ab12479 | 3124 | register struct window *o, *p; |
cffec418 | 3125 | int i; |
7ab12479 | 3126 | |
cffec418 | 3127 | o = XWINDOW (window); |
26605be9 | 3128 | p = allocate_window (); |
cffec418 | 3129 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3130 | ((struct Lisp_Vector *) p)->contents[i] |
3131 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3132 | XSETWINDOW (new, p); |
7ab12479 | 3133 | |
d834a2e9 | 3134 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3135 | |
3136 | /* Put new into window structure in place of window */ | |
3137 | replace_window (window, new); | |
3138 | ||
3139 | o->next = Qnil; | |
3140 | o->prev = Qnil; | |
3141 | o->vchild = Qnil; | |
3142 | o->hchild = Qnil; | |
3143 | o->parent = new; | |
3144 | ||
3145 | p->start = Qnil; | |
3146 | p->pointm = Qnil; | |
3147 | p->buffer = Qnil; | |
3148 | } | |
3149 | ||
3150 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3151 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3152 | WINDOW defaults to selected one and SIZE to half its size. | |
3153 | If optional third arg HORFLAG is non-nil, split side by side | |
3154 | and put SIZE columns in the first of the pair. In that case, | |
3155 | SIZE includes that window's scroll bar, or the divider column to its right. */) | |
3156 | (window, size, horflag) | |
77ae0fe3 | 3157 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3158 | { |
3159 | register Lisp_Object new; | |
3160 | register struct window *o, *p; | |
c0807608 | 3161 | FRAME_PTR fo; |
77ae0fe3 | 3162 | register int size_int; |
7ab12479 | 3163 | |
265a9e55 | 3164 | if (NILP (window)) |
7ab12479 JB |
3165 | window = selected_window; |
3166 | else | |
b7826503 | 3167 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3168 | |
3169 | o = XWINDOW (window); | |
c0807608 | 3170 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3171 | |
77ae0fe3 | 3172 | if (NILP (size)) |
7ab12479 | 3173 | { |
265a9e55 | 3174 | if (!NILP (horflag)) |
c0807608 | 3175 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3176 | the usable space in columns by two. |
3177 | We round up, since the left-hand window may include | |
3178 | a dividing line, while the right-hand may not. */ | |
3179 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3180 | else |
77ae0fe3 | 3181 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3182 | } |
3183 | else | |
3184 | { | |
b7826503 | 3185 | CHECK_NUMBER (size); |
77ae0fe3 | 3186 | size_int = XINT (size); |
7ab12479 JB |
3187 | } |
3188 | ||
3189 | if (MINI_WINDOW_P (o)) | |
3190 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3191 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3192 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3193 | |
a481b3ea | 3194 | check_min_window_sizes (); |
7ab12479 | 3195 | |
265a9e55 | 3196 | if (NILP (horflag)) |
7ab12479 | 3197 | { |
77ae0fe3 KH |
3198 | if (size_int < window_min_height) |
3199 | error ("Window height %d too small (after splitting)", size_int); | |
3200 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3201 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3202 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3203 | if (NILP (o->parent) |
3204 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3205 | { |
3206 | make_dummy_parent (window); | |
3207 | new = o->parent; | |
3208 | XWINDOW (new)->vchild = window; | |
3209 | } | |
3210 | } | |
3211 | else | |
3212 | { | |
77ae0fe3 KH |
3213 | if (size_int < window_min_width) |
3214 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3215 | |
3216 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3217 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3218 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3219 | if (NILP (o->parent) |
3220 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3221 | { |
3222 | make_dummy_parent (window); | |
3223 | new = o->parent; | |
3224 | XWINDOW (new)->hchild = window; | |
3225 | } | |
3226 | } | |
3227 | ||
3228 | /* Now we know that window's parent is a vertical combination | |
3229 | if we are dividing vertically, or a horizontal combination | |
3230 | if we are making side-by-side windows */ | |
3231 | ||
3232 | windows_or_buffers_changed++; | |
c0807608 | 3233 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3234 | new = make_window (); |
3235 | p = XWINDOW (new); | |
3236 | ||
44fa5b1e | 3237 | p->frame = o->frame; |
7ab12479 | 3238 | p->next = o->next; |
265a9e55 | 3239 | if (!NILP (p->next)) |
7ab12479 JB |
3240 | XWINDOW (p->next)->prev = new; |
3241 | p->prev = window; | |
3242 | o->next = new; | |
3243 | p->parent = o->parent; | |
3244 | p->buffer = Qt; | |
5500c422 GM |
3245 | p->window_end_valid = Qnil; |
3246 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3247 | |
44fa5b1e | 3248 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3249 | |
265a9e55 | 3250 | if (!NILP (horflag)) |
7ab12479 JB |
3251 | { |
3252 | p->height = o->height; | |
3253 | p->top = o->top; | |
a59fed7e | 3254 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3255 | XSETFASTINT (o->width, size_int); |
3256 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3257 | } |
3258 | else | |
3259 | { | |
3260 | p->left = o->left; | |
3261 | p->width = o->width; | |
77ae0fe3 KH |
3262 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3263 | XSETFASTINT (o->height, size_int); | |
3264 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3265 | } |
3266 | ||
5500c422 GM |
3267 | /* Adjust glyph matrices. */ |
3268 | adjust_glyphs (fo); | |
543f5fb1 | 3269 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3270 | return new; |
3271 | } | |
3272 | \f | |
3273 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
fdb82f93 PJ |
3274 | doc: /* Make current window ARG lines bigger. |
3275 | From program, optional second arg non-nil means grow sideways ARG columns. | |
3276 | Interactively, if an argument is not given, make the window one line bigger. */) | |
3277 | (arg, side) | |
413430c5 | 3278 | register Lisp_Object arg, side; |
7ab12479 | 3279 | { |
b7826503 | 3280 | CHECK_NUMBER (arg); |
86c8e823 | 3281 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3282 | |
3283 | if (! NILP (Vwindow_configuration_change_hook)) | |
3284 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3285 | ||
7ab12479 JB |
3286 | return Qnil; |
3287 | } | |
3288 | ||
3289 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
fdb82f93 PJ |
3290 | doc: /* Make current window ARG lines smaller. |
3291 | From program, optional second arg non-nil means shrink sideways arg columns. | |
3292 | Interactively, if an argument is not given, make the window one line smaller. */) | |
3293 | (arg, side) | |
413430c5 | 3294 | register Lisp_Object arg, side; |
7ab12479 | 3295 | { |
b7826503 | 3296 | CHECK_NUMBER (arg); |
86c8e823 | 3297 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3298 | |
3299 | if (! NILP (Vwindow_configuration_change_hook)) | |
3300 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3301 | ||
7ab12479 JB |
3302 | return Qnil; |
3303 | } | |
3304 | ||
3305 | int | |
3306 | window_height (window) | |
3307 | Lisp_Object window; | |
3308 | { | |
3309 | register struct window *p = XWINDOW (window); | |
3310 | return XFASTINT (p->height); | |
3311 | } | |
3312 | ||
3313 | int | |
3314 | window_width (window) | |
3315 | Lisp_Object window; | |
3316 | { | |
3317 | register struct window *p = XWINDOW (window); | |
3318 | return XFASTINT (p->width); | |
3319 | } | |
3320 | ||
c1636aa6 | 3321 | |
7ab12479 | 3322 | #define CURBEG(w) \ |
3578db3c | 3323 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3324 | |
3325 | #define CURSIZE(w) \ | |
3578db3c | 3326 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3327 | |
233a4a2c GM |
3328 | |
3329 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3330 | increase its width. Siblings of the selected window are resized to | |
3331 | fullfil the size request. If they become too small in the process, | |
3332 | they will be deleted. */ | |
7ab12479 | 3333 | |
f984d4fc | 3334 | static void |
86c8e823 GM |
3335 | enlarge_window (window, delta, widthflag) |
3336 | Lisp_Object window; | |
233a4a2c | 3337 | int delta, widthflag; |
7ab12479 | 3338 | { |
86c8e823 | 3339 | Lisp_Object parent, next, prev; |
233a4a2c | 3340 | struct window *p; |
3578db3c KR |
3341 | Lisp_Object *sizep; |
3342 | int maximum; | |
5e14b1fc AS |
3343 | int (*sizefun) P_ ((Lisp_Object)) |
3344 | = widthflag ? window_width : window_height; | |
233a4a2c | 3345 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3346 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3347 | |
233a4a2c GM |
3348 | /* Check values of window_min_width and window_min_height for |
3349 | validity. */ | |
a481b3ea | 3350 | check_min_window_sizes (); |
7ab12479 | 3351 | |
233a4a2c | 3352 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3353 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3354 | error ("Window is not resizable"); | |
3355 | ||
3356 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3357 | while (1) |
3358 | { | |
3359 | p = XWINDOW (window); | |
3360 | parent = p->parent; | |
233a4a2c | 3361 | |
265a9e55 | 3362 | if (NILP (parent)) |
7ab12479 JB |
3363 | { |
3364 | if (widthflag) | |
3365 | error ("No other window to side of this one"); | |
3366 | break; | |
3367 | } | |
233a4a2c GM |
3368 | |
3369 | if (widthflag | |
3370 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3371 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3372 | break; |
233a4a2c | 3373 | |
7ab12479 JB |
3374 | window = parent; |
3375 | } | |
3376 | ||
05c2896a | 3377 | sizep = &CURSIZE (window); |
7ab12479 | 3378 | |
7ab12479 JB |
3379 | { |
3380 | register int maxdelta; | |
7ab12479 | 3381 | |
3578db3c | 3382 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
c1636aa6 GM |
3383 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3384 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3385 | widthflag, 0, 0)) |
c1636aa6 GM |
3386 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3387 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3388 | widthflag, 0, 0)) |
44fa5b1e JB |
3389 | /* This is a frame with only one window, a minibuffer-only |
3390 | or a minibufferless frame. */ | |
d5783c40 | 3391 | : (delta = 0)); |
7ab12479 JB |
3392 | |
3393 | if (delta > maxdelta) | |
3394 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3395 | the full frame, or make the only window aside from the |
3396 | minibuffer the full frame. */ | |
7ab12479 | 3397 | delta = maxdelta; |
6b54027b | 3398 | } |
d5783c40 | 3399 | |
3578db3c | 3400 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3401 | { |
543f5fb1 | 3402 | delete_window (window); |
d5783c40 | 3403 | return; |
6b54027b RS |
3404 | } |
3405 | ||
3406 | if (delta == 0) | |
3407 | return; | |
7ab12479 | 3408 | |
db98a733 RS |
3409 | /* Find the total we can get from other siblings. */ |
3410 | maximum = 0; | |
3411 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3412 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3413 | widthflag, 0, 0); |
db98a733 | 3414 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3415 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3416 | widthflag, 0, 0); |
db98a733 RS |
3417 | |
3418 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3419 | if (delta <= maximum) |
7ab12479 | 3420 | { |
db98a733 RS |
3421 | Lisp_Object first_unaffected; |
3422 | Lisp_Object first_affected; | |
233a4a2c | 3423 | int fixed_p; |
db98a733 RS |
3424 | |
3425 | next = p->next; | |
3426 | prev = p->prev; | |
3427 | first_affected = window; | |
3428 | /* Look at one sibling at a time, | |
3429 | moving away from this window in both directions alternately, | |
3430 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3431 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3432 | { |
db98a733 RS |
3433 | if (! NILP (next)) |
3434 | { | |
c1636aa6 | 3435 | int this_one = ((*sizefun) (next) |
233a4a2c | 3436 | - window_min_size (XWINDOW (next), |
f984d4fc | 3437 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3438 | if (!fixed_p) |
3439 | { | |
3440 | if (this_one > delta) | |
3441 | this_one = delta; | |
3442 | ||
3443 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3444 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3445 | |
233a4a2c GM |
3446 | delta -= this_one; |
3447 | } | |
3448 | ||
db98a733 RS |
3449 | next = XWINDOW (next)->next; |
3450 | } | |
233a4a2c | 3451 | |
db98a733 RS |
3452 | if (delta == 0) |
3453 | break; | |
233a4a2c | 3454 | |
db98a733 RS |
3455 | if (! NILP (prev)) |
3456 | { | |
c1636aa6 | 3457 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3458 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3459 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3460 | if (!fixed_p) |
3461 | { | |
3462 | if (this_one > delta) | |
3463 | this_one = delta; | |
3464 | ||
3465 | first_affected = prev; | |
3466 | ||
3467 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3468 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3469 | |
3470 | delta -= this_one; | |
3471 | } | |
3472 | ||
db98a733 RS |
3473 | prev = XWINDOW (prev)->prev; |
3474 | } | |
3475 | } | |
3476 | ||
233a4a2c GM |
3477 | xassert (delta == 0); |
3478 | ||
db98a733 RS |
3479 | /* Now recalculate the edge positions of all the windows affected, |
3480 | based on the new sizes. */ | |
3481 | first_unaffected = next; | |
3482 | prev = first_affected; | |
3483 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3484 | prev = next, next = XWINDOW (next)->next) | |
3485 | { | |
3578db3c | 3486 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3487 | /* This does not change size of NEXT, |
3488 | but it propagates the new top edge to its children */ | |
3489 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3490 | } | |
7ab12479 JB |
3491 | } |
3492 | else | |
3493 | { | |
3494 | register int delta1; | |
3495 | register int opht = (*sizefun) (parent); | |
3496 | ||
3497 | /* If trying to grow this window to or beyond size of the parent, | |
3498 | make delta1 so big that, on shrinking back down, | |
3499 | all the siblings end up with less than one line and are deleted. */ | |
3578db3c | 3500 | if (opht <= XINT (*sizep) + delta) |
7ab12479 | 3501 | delta1 = opht * opht * 2; |
7ab12479 | 3502 | else |
233a4a2c GM |
3503 | { |
3504 | /* Otherwise, make delta1 just right so that if we add | |
3505 | delta1 lines to this window and to the parent, and then | |
3506 | shrink the parent back to its original size, the new | |
3507 | proportional size of this window will increase by delta. | |
3508 | ||
3509 | The function size_window will compute the new height h' | |
3510 | of the window from delta1 as: | |
3511 | ||
3512 | e = delta1/n | |
3513 | x = delta1 - delta1/n * n for the 1st resizable child | |
3514 | h' = h + e + x | |
3515 | ||
3516 | where n is the number of children that can be resized. | |
3517 | We can ignore x by choosing a delta1 that is a multiple of | |
3518 | n. We want the height of this window to come out as | |
3519 | ||
3520 | h' = h + delta | |
3521 | ||
3522 | So, delta1 must be | |
3523 | ||
3524 | h + e = h + delta | |
3525 | delta1/n = delta | |
3526 | delta1 = n * delta. | |
3527 | ||
3528 | The number of children n rquals the number of resizable | |
3529 | children of this window + 1 because we know window itself | |
3530 | is resizable (otherwise we would have signalled an error. */ | |
3531 | ||
3532 | struct window *w = XWINDOW (window); | |
3533 | Lisp_Object s; | |
3534 | int n = 1; | |
3535 | ||
3536 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3537 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3538 | ++n; | |
3539 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3540 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3541 | ++n; | |
3542 | ||
3543 | delta1 = n * delta; | |
3544 | } | |
7ab12479 JB |
3545 | |
3546 | /* Add delta1 lines or columns to this window, and to the parent, | |
3547 | keeping things consistent while not affecting siblings. */ | |
3578db3c KR |
3548 | XSETINT (CURSIZE (parent), opht + delta1); |
3549 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
7ab12479 JB |
3550 | |
3551 | /* Squeeze out delta1 lines or columns from our parent, | |
3552 | shriking this window and siblings proportionately. | |
3553 | This brings parent back to correct size. | |
3554 | Delta1 was calculated so this makes this window the desired size, | |
3555 | taking it all out of the siblings. */ | |
3556 | (*setsizefun) (parent, opht, 0); | |
3557 | } | |
3558 | ||
d834a2e9 | 3559 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3560 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3561 | |
3562 | /* Adjust glyph matrices. */ | |
3563 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3564 | } |
c1636aa6 | 3565 | |
7ab12479 JB |
3566 | #undef CURBEG |
3567 | #undef CURSIZE | |
3568 | ||
5500c422 | 3569 | |
f984d4fc GM |
3570 | \f |
3571 | /*********************************************************************** | |
3572 | Resizing Mini-Windows | |
3573 | ***********************************************************************/ | |
3574 | ||
3575 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3576 | |
43b4a21f GM |
3577 | enum save_restore_action |
3578 | { | |
3579 | CHECK_ORIG_SIZES, | |
3580 | SAVE_ORIG_SIZES, | |
3581 | RESTORE_ORIG_SIZES | |
3582 | }; | |
3583 | ||
3584 | static int save_restore_orig_size P_ ((struct window *, | |
3585 | enum save_restore_action)); | |
f984d4fc GM |
3586 | |
3587 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3588 | from lowest windows first. */ | |
3589 | ||
3590 | static void | |
3591 | shrink_window_lowest_first (w, height) | |
3592 | struct window *w; | |
3593 | int height; | |
3594 | { | |
3595 | struct window *c; | |
3596 | Lisp_Object child; | |
3597 | int old_height; | |
3598 | ||
3599 | xassert (!MINI_WINDOW_P (w)); | |
3600 | ||
3601 | /* Set redisplay hints. */ | |
3602 | XSETFASTINT (w->last_modified, 0); | |
3603 | XSETFASTINT (w->last_overlay_modified, 0); | |
3604 | windows_or_buffers_changed++; | |
3605 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3606 | ||
3607 | old_height = XFASTINT (w->height); | |
3608 | XSETFASTINT (w->height, height); | |
3609 | ||
3610 | if (!NILP (w->hchild)) | |
3611 | { | |
3612 | for (child = w->hchild; !NILP (child); child = c->next) | |
3613 | { | |
3614 | c = XWINDOW (child); | |
3615 | c->top = w->top; | |
3616 | shrink_window_lowest_first (c, height); | |
3617 | } | |
3618 | } | |
3619 | else if (!NILP (w->vchild)) | |
3620 | { | |
3621 | Lisp_Object last_child; | |
3622 | int delta = old_height - height; | |
3623 | int last_top; | |
6bbd7a29 GM |
3624 | |
3625 | last_child = Qnil; | |
f984d4fc GM |
3626 | |
3627 | /* Find the last child. We are taking space from lowest windows | |
3628 | first, so we iterate over children from the last child | |
3629 | backwards. */ | |
3630 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3631 | last_child = child; | |
3632 | ||
3633 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3634 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3635 | { | |
3636 | int this_one; | |
3637 | ||
3638 | c = XWINDOW (child); | |
3639 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3640 | ||
3641 | if (this_one > delta) | |
3642 | this_one = delta; | |
3643 | ||
3644 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3645 | delta -= this_one; | |
3646 | } | |
3647 | ||
3648 | /* Compute new positions. */ | |
3578db3c | 3649 | last_top = XINT (w->top); |
f984d4fc GM |
3650 | for (child = w->vchild; !NILP (child); child = c->next) |
3651 | { | |
3652 | c = XWINDOW (child); | |
3653 | c->top = make_number (last_top); | |
3654 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3655 | last_top += XFASTINT (c->height); | |
3656 | } | |
3657 | } | |
3658 | } | |
3659 | ||
3660 | ||
43b4a21f GM |
3661 | /* Save, restore, or check positions and sizes in the window tree |
3662 | rooted at W. ACTION says what to do. | |
f984d4fc | 3663 | |
43b4a21f GM |
3664 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3665 | members are valid for all windows in the window tree. Value is | |
3666 | non-zero if they are valid. | |
3667 | ||
3668 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3669 | orig_top and orig_height for all windows in the tree. | |
3670 | ||
3671 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3672 | values stored in orig_top and orig_height for all windows. */ | |
3673 | ||
3674 | static int | |
3675 | save_restore_orig_size (w, action) | |
f984d4fc | 3676 | struct window *w; |
43b4a21f | 3677 | enum save_restore_action action; |
f984d4fc | 3678 | { |
43b4a21f GM |
3679 | int success_p = 1; |
3680 | ||
f984d4fc GM |
3681 | while (w) |
3682 | { | |
3683 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3684 | { |
3685 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3686 | success_p = 0; | |
3687 | } | |
f984d4fc | 3688 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3689 | { |
3690 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3691 | success_p = 0; | |
3692 | } | |
f984d4fc | 3693 | |
43b4a21f | 3694 | switch (action) |
f984d4fc | 3695 | { |
43b4a21f GM |
3696 | case CHECK_ORIG_SIZES: |
3697 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3698 | return 0; | |
3699 | break; | |
3700 | ||
3701 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3702 | w->orig_top = w->top; |
3703 | w->orig_height = w->height; | |
43b4a21f GM |
3704 | XSETFASTINT (w->last_modified, 0); |
3705 | XSETFASTINT (w->last_overlay_modified, 0); | |
3706 | break; | |
3707 | ||
3708 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3709 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3710 | w->top = w->orig_top; | |
3711 | w->height = w->orig_height; | |
3712 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3713 | XSETFASTINT (w->last_modified, 0); |
3714 | XSETFASTINT (w->last_overlay_modified, 0); | |
3715 | break; | |
3716 | ||
3717 | default: | |
3718 | abort (); | |
f984d4fc | 3719 | } |
43b4a21f | 3720 | |
f984d4fc GM |
3721 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3722 | } | |
43b4a21f GM |
3723 | |
3724 | return success_p; | |
f984d4fc GM |
3725 | } |
3726 | ||
3727 | ||
3728 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3729 | without deleting other windows. */ | |
3730 | ||
3731 | void | |
3732 | grow_mini_window (w, delta) | |
3733 | struct window *w; | |
3734 | int delta; | |
3735 | { | |
3736 | struct frame *f = XFRAME (w->frame); | |
3737 | struct window *root; | |
3738 | ||
3739 | xassert (MINI_WINDOW_P (w)); | |
3740 | xassert (delta >= 0); | |
3741 | ||
3742 | /* Check values of window_min_width and window_min_height for | |
3743 | validity. */ | |
3744 | check_min_window_sizes (); | |
3745 | ||
3746 | /* Compute how much we can enlarge the mini-window without deleting | |
3747 | other windows. */ | |
3748 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3749 | if (delta) | |
3750 | { | |
3751 | int min_height = window_min_size (root, 0, 0, 0); | |
3752 | if (XFASTINT (root->height) - delta < min_height) | |
8b8bd9c6 | 3753 | /* Note that the root window may already be smaller than |
eafa3196 GM |
3754 | min_height. */ |
3755 | delta = max (0, XFASTINT (root->height) - min_height); | |
f984d4fc GM |
3756 | } |
3757 | ||
3758 | if (delta) | |
3759 | { | |
3760 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3761 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3762 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3763 | |
3764 | /* Shrink other windows. */ | |
3765 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3766 | ||
3767 | /* Grow the mini-window. */ | |
3578db3c | 3768 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3769 | w->height = make_number (XFASTINT (w->height) + delta); |
3770 | XSETFASTINT (w->last_modified, 0); | |
3771 | XSETFASTINT (w->last_overlay_modified, 0); | |
3772 | ||
3773 | adjust_glyphs (f); | |
3774 | } | |
3775 | } | |
3776 | ||
3777 | ||
86c8e823 GM |
3778 | /* Shrink mini-window W. If there is recorded info about window sizes |
3779 | before a call to grow_mini_window, restore recorded window sizes. | |
3780 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3781 | line. */ | |
f984d4fc GM |
3782 | |
3783 | void | |
3784 | shrink_mini_window (w) | |
3785 | struct window *w; | |
3786 | { | |
3787 | struct frame *f = XFRAME (w->frame); | |
3788 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3789 | ||
43b4a21f | 3790 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3791 | { |
43b4a21f | 3792 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3793 | adjust_glyphs (f); |
3794 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3795 | windows_or_buffers_changed = 1; | |
3796 | } | |
86c8e823 GM |
3797 | else if (XFASTINT (w->height) > 1) |
3798 | { | |
0130fe1a GM |
3799 | /* Distribute the additional lines of the mini-window |
3800 | among the other windows. */ | |
86c8e823 GM |
3801 | Lisp_Object window; |
3802 | XSETWINDOW (window, w); | |
3803 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3804 | } | |
f984d4fc GM |
3805 | } |
3806 | ||
3807 | ||
3808 | \f | |
5500c422 GM |
3809 | /* Mark window cursors off for all windows in the window tree rooted |
3810 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3811 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3812 | the frame are cleared. */ | |
3813 | ||
3814 | void | |
3815 | mark_window_cursors_off (w) | |
3816 | struct window *w; | |
3817 | { | |
3818 | while (w) | |
3819 | { | |
3820 | if (!NILP (w->hchild)) | |
3821 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3822 | else if (!NILP (w->vchild)) | |
3823 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3824 | else | |
3825 | w->phys_cursor_on_p = 0; | |
3826 | ||
3827 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3828 | } | |
3829 | } | |
3830 | ||
3831 | ||
e9c195b1 | 3832 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
3833 | |
3834 | int | |
3835 | window_internal_height (w) | |
3836 | struct window *w; | |
3837 | { | |
3838 | int ht = XFASTINT (w->height); | |
3839 | ||
e9c195b1 GM |
3840 | if (!MINI_WINDOW_P (w)) |
3841 | { | |
3842 | if (!NILP (w->parent) | |
3843 | || !NILP (w->vchild) | |
3844 | || !NILP (w->hchild) | |
3845 | || !NILP (w->next) | |
3846 | || !NILP (w->prev) | |
3847 | || WINDOW_WANTS_MODELINE_P (w)) | |
3848 | --ht; | |
7ab12479 | 3849 | |
e9c195b1 GM |
3850 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
3851 | --ht; | |
3852 | } | |
7ab12479 JB |
3853 | |
3854 | return ht; | |
3855 | } | |
3856 | ||
535e0b8e JB |
3857 | |
3858 | /* Return the number of columns in W. | |
a3c87d4e | 3859 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3860 | separating W from the sibling to its right. */ |
5500c422 | 3861 | |
535e0b8e JB |
3862 | int |
3863 | window_internal_width (w) | |
3864 | struct window *w; | |
3865 | { | |
5500c422 | 3866 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3867 | int width = XINT (w->width); |
3868 | ||
a3c87d4e | 3869 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3870 | /* Scroll bars occupy a few columns. */ |
3871 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3872 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3873 | /* The column of `|' characters separating side-by-side windows | |
3874 | occupies one column only. */ | |
3875 | width -= 1; | |
3876 | ||
3877 | /* On window-systems, areas to the left and right of the window | |
81d189fd | 3878 | are used as fringes. */ |
5500c422 | 3879 | if (FRAME_WINDOW_P (f)) |
81d189fd | 3880 | width -= FRAME_FRINGE_COLS (f); |
111e5992 RS |
3881 | |
3882 | return width; | |
535e0b8e JB |
3883 | } |
3884 | ||
5500c422 GM |
3885 | \f |
3886 | /************************************************************************ | |
3887 | Window Scrolling | |
3888 | ***********************************************************************/ | |
535e0b8e | 3889 | |
5500c422 | 3890 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 3891 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
3892 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
3893 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3894 | means don't signal an error if we try to move over BEGV or ZV, | |
3895 | respectively. */ | |
7ab12479 | 3896 | |
101d1605 RS |
3897 | static void |
3898 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3899 | Lisp_Object window; |
3900 | int n; | |
101d1605 | 3901 | int whole; |
f8026fd8 | 3902 | int noerror; |
5500c422 GM |
3903 | { |
3904 | /* If we must, use the pixel-based version which is much slower than | |
3905 | the line-based one but can handle varying line heights. */ | |
3906 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3907 | window_scroll_pixel_based (window, n, whole, noerror); | |
3908 | else | |
3909 | window_scroll_line_based (window, n, whole, noerror); | |
3910 | } | |
3911 | ||
3912 | ||
3913 | /* Implementation of window_scroll that works based on pixel line | |
3914 | heights. See the comment of window_scroll for parameter | |
3915 | descriptions. */ | |
3916 | ||
3917 | static void | |
3918 | window_scroll_pixel_based (window, n, whole, noerror) | |
3919 | Lisp_Object window; | |
3920 | int n; | |
3921 | int whole; | |
3922 | int noerror; | |
3923 | { | |
3924 | struct it it; | |
3925 | struct window *w = XWINDOW (window); | |
3926 | struct text_pos start; | |
3927 | Lisp_Object tem; | |
3928 | int this_scroll_margin; | |
3929 | int preserve_y; | |
5cdb3cf3 MB |
3930 | /* True if we fiddled the window vscroll field without really scrolling. */ |
3931 | int vscrolled = 0; | |
5500c422 GM |
3932 | |
3933 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3934 | ||
3935 | /* If PT is not visible in WINDOW, move back one half of | |
288d4e06 GM |
3936 | the screen. Allow PT to be partially visible, otherwise |
3937 | something like (scroll-down 1) with PT in the line before | |
3938 | the partially visible one would recenter. */ | |
3939 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
3940 | if (NILP (tem)) |
3941 | { | |
3942 | /* Move backward half the height of the window. Performance note: | |
3943 | vmotion used here is about 10% faster, but would give wrong | |
3944 | results for variable height lines. */ | |
3945 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3946 | it.current_y = it.last_visible_y; | |
202379cf | 3947 | move_it_vertically (&it, - window_box_height (w) / 2); |
5500c422 GM |
3948 | |
3949 | /* The function move_iterator_vertically may move over more than | |
3950 | the specified y-distance. If it->w is small, e.g. a | |
3951 | mini-buffer window, we may end up in front of the window's | |
3952 | display area. This is the case when Start displaying at the | |
3953 | start of the line containing PT in this case. */ | |
3954 | if (it.current_y <= 0) | |
3955 | { | |
3956 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3957 | move_it_vertically (&it, 0); | |
3958 | it.current_y = 0; | |
3959 | } | |
3960 | ||
3961 | start = it.current.pos; | |
3962 | } | |
3963 | ||
3964 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3965 | point in the same window line as it is now, so get that line. */ | |
3966 | if (!NILP (Vscroll_preserve_screen_position)) | |
3967 | { | |
3968 | start_display (&it, w, start); | |
3969 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3970 | preserve_y = it.current_y; | |
3971 | } | |
3972 | else | |
3973 | preserve_y = -1; | |
3974 | ||
3975 | /* Move iterator it from start the specified distance forward or | |
3976 | backward. The result is the new window start. */ | |
3977 | start_display (&it, w, start); | |
3978 | if (whole) | |
3979 | { | |
202379cf | 3980 | int screen_full = (window_box_height (w) |
5500c422 | 3981 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); |
d4e7cf01 | 3982 | int dy = n * screen_full; |
d72340d4 GM |
3983 | |
3984 | /* Note that move_it_vertically always moves the iterator to the | |
3985 | start of a line. So, if the last line doesn't have a newline, | |
3986 | we would end up at the start of the line ending at ZV. */ | |
3987 | if (dy <= 0) | |
3988 | move_it_vertically_backward (&it, -dy); | |
3989 | else if (dy > 0) | |
3990 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, | |
3991 | MOVE_TO_POS | MOVE_TO_Y); | |
5500c422 GM |
3992 | } |
3993 | else | |
3994 | move_it_by_lines (&it, n, 1); | |
3995 | ||
3996 | /* End if we end up at ZV or BEGV. */ | |
3997 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
3998 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
3999 | { | |
5cdb3cf3 MB |
4000 | if (IT_CHARPOS (it) == ZV) |
4001 | { | |
4002 | if (it.current_y + it.max_ascent + it.max_descent | |
4003 | > it.last_visible_y) | |
a74eca50 GM |
4004 | { |
4005 | /* The last line was only partially visible, make it fully | |
4006 | visible. */ | |
4007 | w->vscroll = (it.last_visible_y | |
4008 | - it.current_y + it.max_ascent + it.max_descent); | |
4009 | adjust_glyphs (it.f); | |
4010 | } | |
5cdb3cf3 MB |
4011 | else if (noerror) |
4012 | return; | |
4013 | else | |
4014 | Fsignal (Qend_of_buffer, Qnil); | |
4015 | } | |
5500c422 | 4016 | else |
5cdb3cf3 MB |
4017 | { |
4018 | if (w->vscroll != 0) | |
4019 | /* The first line was only partially visible, make it fully | |
4020 | visible. */ | |
4021 | w->vscroll = 0; | |
4022 | else if (noerror) | |
4023 | return; | |
4024 | else | |
4025 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4026 | } | |
4027 | ||
4028 | /* If control gets here, then we vscrolled. */ | |
4029 | ||
4030 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4031 | ||
4032 | /* Don't try to change the window start below. */ | |
4033 | vscrolled = 1; | |
5500c422 GM |
4034 | } |
4035 | ||
5cdb3cf3 MB |
4036 | if (! vscrolled) |
4037 | { | |
4038 | /* Set the window start, and set up the window for redisplay. */ | |
4039 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), | |
4040 | w->buffer); | |
4041 | w->start_at_line_beg = Fbolp (); | |
4042 | w->update_mode_line = Qt; | |
4043 | XSETFASTINT (w->last_modified, 0); | |
4044 | XSETFASTINT (w->last_overlay_modified, 0); | |
4045 | /* Set force_start so that redisplay_window will run the | |
4046 | window-scroll-functions. */ | |
4047 | w->force_start = Qt; | |
4048 | } | |
5500c422 GM |
4049 | |
4050 | it.current_y = it.vpos = 0; | |
4051 | ||
4052 | /* Preserve the screen position if we must. */ | |
4053 | if (preserve_y >= 0) | |
4054 | { | |
4055 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
4056 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4057 | } | |
4058 | else | |
4059 | { | |
4060 | /* Move PT out of scroll margins. */ | |
4061 | this_scroll_margin = max (0, scroll_margin); | |
4062 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
4063 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
4064 | ||
4065 | if (n > 0) | |
4066 | { | |
4067 | /* We moved the window start towards ZV, so PT may be now | |
4068 | in the scroll margin at the top. */ | |
4069 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4070 | while (it.current_y < this_scroll_margin) | |
4071 | move_it_by_lines (&it, 1, 1); | |
4072 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4073 | } | |
4074 | else if (n < 0) | |
4075 | { | |
5cdb3cf3 MB |
4076 | int charpos, bytepos; |
4077 | ||
5500c422 GM |
4078 | /* We moved the window start towards BEGV, so PT may be now |
4079 | in the scroll margin at the bottom. */ | |
4080 | move_it_to (&it, PT, -1, | |
4081 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4082 | MOVE_TO_POS | MOVE_TO_Y); | |
5cdb3cf3 MB |
4083 | |
4084 | /* Save our position, in case it's correct. */ | |
4085 | charpos = IT_CHARPOS (it); | |
4086 | bytepos = IT_BYTEPOS (it); | |
5500c422 | 4087 | |
5cdb3cf3 MB |
4088 | /* See if point is on a partially visible line at the end. */ |
4089 | move_it_by_lines (&it, 1, 1); | |
4090 | if (it.current_y > it.last_visible_y) | |
4091 | /* The last line was only partially visible, so back up two | |
4092 | lines to make sure we're on a fully visible line. */ | |
4093 | { | |
4094 | move_it_by_lines (&it, -2, 0); | |
4095 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4096 | } | |
4097 | else | |
4098 | /* No, the position we saved is OK, so use it. */ | |
4099 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4100 | } |
4101 | } | |
4102 | } | |
4103 | ||
4104 | ||
4105 | /* Implementation of window_scroll that works based on screen lines. | |
4106 | See the comment of window_scroll for parameter descriptions. */ | |
4107 | ||
4108 | static void | |
4109 | window_scroll_line_based (window, n, whole, noerror) | |
4110 | Lisp_Object window; | |
4111 | int n; | |
4112 | int whole; | |
4113 | int noerror; | |
7ab12479 JB |
4114 | { |
4115 | register struct window *w = XWINDOW (window); | |
5500c422 | 4116 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4117 | register int pos, pos_byte; |
7ab12479 JB |
4118 | register int ht = window_internal_height (w); |
4119 | register Lisp_Object tem; | |
4120 | int lose; | |
5500c422 | 4121 | Lisp_Object bolp; |
345d45b2 | 4122 | int startpos; |
101d1605 RS |
4123 | struct position posit; |
4124 | int original_vpos; | |
4125 | ||
d4e7cf01 GM |
4126 | /* If scrolling screen-fulls, compute the number of lines to |
4127 | scroll from the window's height. */ | |
4128 | if (whole) | |
4129 | n *= max (1, ht - next_screen_context_lines); | |
4130 | ||
101d1605 RS |
4131 | startpos = marker_position (w->start); |
4132 | ||
4133 | posit = *compute_motion (startpos, 0, 0, 0, | |
4134 | PT, ht, 0, | |
4135 | window_internal_width (w), XINT (w->hscroll), | |
4136 | 0, w); | |
4137 | original_vpos = posit.vpos; | |
0a1f771a | 4138 | |
d834a2e9 | 4139 | XSETFASTINT (tem, PT); |
6ffdb539 | 4140 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4141 | |
265a9e55 | 4142 | if (NILP (tem)) |
7ab12479 | 4143 | { |
cd2be1dd | 4144 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4145 | startpos = PT; |
7ab12479 JB |
4146 | } |
4147 | ||
345d45b2 | 4148 | SET_PT (startpos); |
5ce7b543 | 4149 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4150 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4151 | pos = PT; |
b73ea88e | 4152 | pos_byte = PT_BYTE; |
7ab12479 | 4153 | bolp = Fbolp (); |
b73ea88e | 4154 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4155 | |
4156 | if (lose) | |
f8026fd8 JB |
4157 | { |
4158 | if (noerror) | |
4159 | return; | |
4160 | else | |
4161 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4162 | } | |
7ab12479 JB |
4163 | |
4164 | if (pos < ZV) | |
7ab12479 | 4165 | { |
0c7da84e RS |
4166 | int this_scroll_margin = scroll_margin; |
4167 | ||
4168 | /* Don't use a scroll margin that is negative or too large. */ | |
4169 | if (this_scroll_margin < 0) | |
4170 | this_scroll_margin = 0; | |
4171 | ||
4172 | if (XINT (w->height) < 4 * scroll_margin) | |
4173 | this_scroll_margin = XINT (w->height) / 4; | |
4174 | ||
b73ea88e | 4175 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4176 | w->start_at_line_beg = bolp; |
4177 | w->update_mode_line = Qt; | |
d834a2e9 | 4178 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4179 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4180 | /* Set force_start so that redisplay_window will run |
4181 | the window-scroll-functions. */ | |
4182 | w->force_start = Qt; | |
0c7da84e | 4183 | |
5500c422 | 4184 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4185 | { |
b73ea88e | 4186 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4187 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4188 | } |
101d1605 RS |
4189 | /* If we scrolled forward, put point enough lines down |
4190 | that it is outside the scroll margin. */ | |
4191 | else if (n > 0) | |
0c7da84e | 4192 | { |
101d1605 RS |
4193 | int top_margin; |
4194 | ||
4195 | if (this_scroll_margin > 0) | |
4196 | { | |
b73ea88e | 4197 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4198 | Fvertical_motion (make_number (this_scroll_margin), window); |
4199 | top_margin = PT; | |
4200 | } | |
4201 | else | |
4202 | top_margin = pos; | |
4203 | ||
4204 | if (top_margin <= opoint) | |
b73ea88e | 4205 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4206 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4207 | { |
b73ea88e | 4208 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4209 | Fvertical_motion (make_number (original_vpos), window); |
4210 | } | |
9317a85d | 4211 | else |
335406fc | 4212 | SET_PT (top_margin); |
0c7da84e | 4213 | } |
101d1605 | 4214 | else if (n < 0) |
7ab12479 | 4215 | { |
101d1605 RS |
4216 | int bottom_margin; |
4217 | ||
0c7da84e RS |
4218 | /* If we scrolled backward, put point near the end of the window |
4219 | but not within the scroll margin. */ | |
b73ea88e | 4220 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4221 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4222 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4223 | bottom_margin = PT; | |
4224 | else | |
4225 | bottom_margin = PT + 1; | |
4226 | ||
4227 | if (bottom_margin > opoint) | |
b73ea88e | 4228 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4229 | else |
101d1605 | 4230 | { |
5500c422 | 4231 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4232 | { |
b73ea88e | 4233 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4234 | Fvertical_motion (make_number (original_vpos), window); |
4235 | } | |
4236 | else | |
4237 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4238 | } |
7ab12479 JB |
4239 | } |
4240 | } | |
4241 | else | |
f8026fd8 JB |
4242 | { |
4243 | if (noerror) | |
4244 | return; | |
4245 | else | |
4246 | Fsignal (Qend_of_buffer, Qnil); | |
4247 | } | |
7ab12479 | 4248 | } |
5500c422 GM |
4249 | |
4250 | ||
4251 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4252 | screen-full which is defined as the height of the window minus | |
4253 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4254 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4255 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4256 | |
4257 | static void | |
4258 | scroll_command (n, direction) | |
5500c422 | 4259 | Lisp_Object n; |
7ab12479 JB |
4260 | int direction; |
4261 | { | |
d4e7cf01 | 4262 | int count = BINDING_STACK_SIZE (); |
7ab12479 | 4263 | |
5500c422 GM |
4264 | xassert (abs (direction) == 1); |
4265 | ||
4266 | /* If selected window's buffer isn't current, make it current for | |
4267 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4268 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4269 | { |
4270 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4271 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4272 | |
4273 | /* Make redisplay consider other windows than just selected_window. */ | |
4274 | ++windows_or_buffers_changed; | |
95605e15 | 4275 | } |
7ab12479 | 4276 | |
265a9e55 | 4277 | if (NILP (n)) |
d4e7cf01 | 4278 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4279 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4280 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4281 | else |
4282 | { | |
4283 | n = Fprefix_numeric_value (n); | |
101d1605 | 4284 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4285 | } |
95605e15 JB |
4286 | |
4287 | unbind_to (count, Qnil); | |
7ab12479 JB |
4288 | } |
4289 | ||
4290 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
fdb82f93 PJ |
4291 | doc: /* Scroll text of current window upward ARG lines; or near full screen if no ARG. |
4292 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4293 | Negative ARG means scroll downward. | |
4294 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4295 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4296 | (arg) | |
413430c5 | 4297 | Lisp_Object arg; |
7ab12479 | 4298 | { |
413430c5 | 4299 | scroll_command (arg, 1); |
7ab12479 JB |
4300 | return Qnil; |
4301 | } | |
4302 | ||
4303 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
fdb82f93 PJ |
4304 | doc: /* Scroll text of current window down ARG lines; or near full screen if no ARG. |
4305 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4306 | Negative ARG means scroll upward. | |
4307 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4308 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4309 | (arg) | |
413430c5 | 4310 | Lisp_Object arg; |
7ab12479 | 4311 | { |
413430c5 | 4312 | scroll_command (arg, -1); |
7ab12479 JB |
4313 | return Qnil; |
4314 | } | |
ccd0664b RS |
4315 | \f |
4316 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 PJ |
4317 | doc: /* Return the other window for \"other window scroll\" commands. |
4318 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4319 | specifies the window. | |
4320 | If `other-window-scroll-buffer' is non-nil, a window | |
4321 | showing that buffer is used. */) | |
4322 | () | |
7ab12479 | 4323 | { |
ccd0664b | 4324 | Lisp_Object window; |
7ab12479 JB |
4325 | |
4326 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4327 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4328 | window = Vminibuf_scroll_window; |
4329 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4330 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4331 | { |
4332 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4333 | if (NILP (window)) |
53f76081 | 4334 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4335 | } |
4336 | else | |
dbc4e1c1 JB |
4337 | { |
4338 | /* Nothing specified; look for a neighboring window on the same | |
4339 | frame. */ | |
4340 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4341 | ||
4342 | if (EQ (window, selected_window)) | |
4343 | /* That didn't get us anywhere; look for a window on another | |
4344 | visible frame. */ | |
4345 | do | |
4346 | window = Fnext_window (window, Qnil, Qt); | |
4347 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4348 | && ! EQ (window, selected_window)); | |
4349 | } | |
4350 | ||
b7826503 | 4351 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4352 | |
4353 | if (EQ (window, selected_window)) | |
4354 | error ("There is no other window"); | |
4355 | ||
ccd0664b RS |
4356 | return window; |
4357 | } | |
4358 | ||
4359 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4360 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4361 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4362 | The next window is the one below the current one; or the one at the top | |
4363 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4364 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4365 | When calling from a program, supply as argument a number, nil, or `-'. | |
4366 | ||
4367 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4368 | specifies the window to scroll. | |
4369 | If `other-window-scroll-buffer' is non-nil, scroll the window | |
4370 | showing that buffer, popping the buffer up if necessary. */) | |
4371 | (arg) | |
d4e7cf01 | 4372 | Lisp_Object arg; |
ccd0664b | 4373 | { |
d4e7cf01 GM |
4374 | Lisp_Object window; |
4375 | struct window *w; | |
4376 | int count = BINDING_STACK_SIZE (); | |
ccd0664b RS |
4377 | |
4378 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4379 | w = XWINDOW (window); |
7ab12479 JB |
4380 | |
4381 | /* Don't screw up if window_scroll gets an error. */ | |
4382 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4383 | ++windows_or_buffers_changed; |
7ab12479 JB |
4384 | |
4385 | Fset_buffer (w->buffer); | |
4386 | SET_PT (marker_position (w->pointm)); | |
4387 | ||
413430c5 | 4388 | if (NILP (arg)) |
d4e7cf01 | 4389 | window_scroll (window, 1, 1, 1); |
413430c5 | 4390 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4391 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4392 | else |
4393 | { | |
413430c5 EN |
4394 | if (CONSP (arg)) |
4395 | arg = Fcar (arg); | |
b7826503 | 4396 | CHECK_NUMBER (arg); |
101d1605 | 4397 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4398 | } |
4399 | ||
b73ea88e | 4400 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4401 | unbind_to (count, Qnil); |
7ab12479 JB |
4402 | |
4403 | return Qnil; | |
4404 | } | |
4405 | \f | |
644b477c | 4406 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
fdb82f93 | 4407 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4408 | Default for ARG is window width minus 2. |
4409 | Value is the total amount of leftward horizontal scrolling in | |
4410 | effect after the change. | |
4411 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4412 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4413 | will not scroll a window to a column less than the value returned | |
4414 | by this function. */) | |
fdb82f93 | 4415 | (arg) |
7ab12479 JB |
4416 | register Lisp_Object arg; |
4417 | { | |
c67fa410 GM |
4418 | Lisp_Object result; |
4419 | int hscroll; | |
4420 | struct window *w = XWINDOW (selected_window); | |
4421 | ||
265a9e55 | 4422 | if (NILP (arg)) |
c67fa410 | 4423 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4424 | else |
4425 | arg = Fprefix_numeric_value (arg); | |
4426 | ||
c67fa410 GM |
4427 | hscroll = XINT (w->hscroll) + XINT (arg); |
4428 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4429 | ||
f5686fbd | 4430 | if (interactive_p (0)) |
c67fa410 GM |
4431 | w->min_hscroll = w->hscroll; |
4432 | ||
4433 | return result; | |
7ab12479 JB |
4434 | } |
4435 | ||
644b477c | 4436 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
fdb82f93 | 4437 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4438 | Default for ARG is window width minus 2. |
4439 | Value is the total amount of leftward horizontal scrolling in | |
4440 | effect after the change. | |
4441 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4442 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4443 | will not scroll a window to a column less than the value returned | |
4444 | by this function. */) | |
fdb82f93 | 4445 | (arg) |
7ab12479 JB |
4446 | register Lisp_Object arg; |
4447 | { | |
c67fa410 GM |
4448 | Lisp_Object result; |
4449 | int hscroll; | |
4450 | struct window *w = XWINDOW (selected_window); | |
4451 | ||
265a9e55 | 4452 | if (NILP (arg)) |
c67fa410 | 4453 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4454 | else |
4455 | arg = Fprefix_numeric_value (arg); | |
4456 | ||
c67fa410 GM |
4457 | hscroll = XINT (w->hscroll) - XINT (arg); |
4458 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4459 | ||
f5686fbd | 4460 | if (interactive_p (0)) |
c67fa410 GM |
4461 | w->min_hscroll = w->hscroll; |
4462 | ||
4463 | return result; | |
7ab12479 JB |
4464 | } |
4465 | ||
12c8b416 GM |
4466 | /* Value is the number of lines actually displayed in window W, |
4467 | as opposed to its height. */ | |
4468 | ||
4469 | static int | |
4470 | displayed_window_lines (w) | |
4471 | struct window *w; | |
4472 | { | |
4473 | struct it it; | |
4474 | struct text_pos start; | |
4475 | int height = window_box_height (w); | |
4476 | struct buffer *old_buffer; | |
4477 | int bottom_y; | |
4478 | ||
4479 | if (XBUFFER (w->buffer) != current_buffer) | |
4480 | { | |
4481 | old_buffer = current_buffer; | |
4482 | set_buffer_internal (XBUFFER (w->buffer)); | |
4483 | } | |
4484 | else | |
4485 | old_buffer = NULL; | |
4486 | ||
521b203e GM |
4487 | /* In case W->start is out of the accessible range, do something |
4488 | reasonable. This happens in Info mode when Info-scroll-down | |
4489 | calls (recenter -1) while W->start is 1. */ | |
4490 | if (XMARKER (w->start)->charpos < BEGV) | |
4491 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4492 | else if (XMARKER (w->start)->charpos > ZV) | |
4493 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4494 | else | |
4495 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4496 | ||
12c8b416 GM |
4497 | start_display (&it, w, start); |
4498 | move_it_vertically (&it, height); | |
c8bc6f65 | 4499 | bottom_y = line_bottom_y (&it); |
12c8b416 GM |
4500 | |
4501 | /* Add in empty lines at the bottom of the window. */ | |
4502 | if (bottom_y < height) | |
4503 | { | |
c8bc6f65 GM |
4504 | int uy = CANON_Y_UNIT (it.f); |
4505 | it.vpos += (height - bottom_y + uy - 1) / uy; | |
12c8b416 GM |
4506 | } |
4507 | ||
c8bc6f65 GM |
4508 | if (old_buffer) |
4509 | set_buffer_internal (old_buffer); | |
4510 | ||
12c8b416 GM |
4511 | return it.vpos; |
4512 | } | |
4513 | ||
4514 | ||
7ab12479 | 4515 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
4516 | doc: /* Center point in window and redisplay frame. |
4517 | With prefix argument ARG, recenter putting point on screen line ARG | |
4518 | relative to the current window. If ARG is negative, it counts up from the | |
4519 | bottom of the window. (ARG should be less than the height of the window.) | |
4520 | ||
4521 | If ARG is omitted or nil, erase the entire frame and then | |
4522 | redraw with point in the center of the current window. | |
4523 | Just C-u as prefix means put point in the center of the window | |
4524 | and redisplay normally--don't erase and redraw the frame. */) | |
4525 | (arg) | |
413430c5 | 4526 | register Lisp_Object arg; |
7ab12479 | 4527 | { |
6df47b59 | 4528 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
4529 | struct buffer *buf = XBUFFER (w->buffer); |
4530 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
4531 | int center_p = 0; |
4532 | int charpos, bytepos; | |
7ab12479 | 4533 | |
413430c5 | 4534 | if (NILP (arg)) |
7ab12479 | 4535 | { |
f02d6d5c KH |
4536 | int i; |
4537 | ||
4538 | /* Invalidate pixel data calculated for all compositions. */ | |
4539 | for (i = 0; i < n_compositions; i++) | |
4540 | composition_table[i]->font = NULL; | |
7ab12479 | 4541 | |
527b6458 | 4542 | Fredraw_frame (w->frame); |
44fa5b1e | 4543 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 4544 | center_p = 1; |
7ab12479 | 4545 | } |
413430c5 | 4546 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 4547 | center_p = 1; |
7ab12479 JB |
4548 | else |
4549 | { | |
413430c5 | 4550 | arg = Fprefix_numeric_value (arg); |
b7826503 | 4551 | CHECK_NUMBER (arg); |
7ab12479 JB |
4552 | } |
4553 | ||
478292ed | 4554 | set_buffer_internal (buf); |
7ab12479 | 4555 | |
521b203e | 4556 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
4557 | have variable-height lines and centering point on the basis of |
4558 | line counts would lead to strange effects. */ | |
521b203e | 4559 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 4560 | { |
6df47b59 GM |
4561 | if (center_p) |
4562 | { | |
521b203e GM |
4563 | struct it it; |
4564 | struct text_pos pt; | |
4565 | ||
4566 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4567 | start_display (&it, w, pt); | |
202379cf | 4568 | move_it_vertically (&it, - window_box_height (w) / 2); |
521b203e GM |
4569 | charpos = IT_CHARPOS (it); |
4570 | bytepos = IT_BYTEPOS (it); | |
6df47b59 GM |
4571 | } |
4572 | else if (XINT (arg) < 0) | |
4573 | { | |
521b203e GM |
4574 | struct it it; |
4575 | struct text_pos pt; | |
d466fa4d | 4576 | int y0, y1, h, nlines; |
521b203e GM |
4577 | |
4578 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4579 | start_display (&it, w, pt); | |
4580 | y0 = it.current_y; | |
4581 | ||
d466fa4d | 4582 | /* The amount of pixels we have to move back is the window |
521b203e GM |
4583 | height minus what's displayed in the line containing PT, |
4584 | and the lines below. */ | |
d466fa4d GM |
4585 | nlines = - XINT (arg) - 1; |
4586 | move_it_by_lines (&it, nlines, 1); | |
4587 | ||
521b203e GM |
4588 | y1 = it.current_y - y0; |
4589 | h = line_bottom_y (&it) - y1; | |
d466fa4d GM |
4590 | |
4591 | /* If we can't move down NLINES lines because we hit | |
4592 | the end of the buffer, count in some empty lines. */ | |
4593 | if (it.vpos < nlines) | |
4594 | y1 += (nlines - it.vpos) * CANON_Y_UNIT (it.f); | |
4595 | ||
521b203e GM |
4596 | y0 = it.last_visible_y - y1 - h; |
4597 | ||
4598 | start_display (&it, w, pt); | |
4599 | move_it_vertically (&it, - y0); | |
4600 | charpos = IT_CHARPOS (it); | |
4601 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 4602 | } |
521b203e GM |
4603 | else |
4604 | { | |
4605 | struct position pos; | |
4606 | pos = *vmotion (PT, - XINT (arg), w); | |
4607 | charpos = pos.bufpos; | |
4608 | bytepos = pos.bytepos; | |
4609 | } | |
4610 | } | |
4611 | else | |
4612 | { | |
4613 | struct position pos; | |
4614 | int ht = window_internal_height (w); | |
4615 | ||
4616 | if (center_p) | |
4617 | arg = make_number (ht / 2); | |
4618 | else if (XINT (arg) < 0) | |
4619 | arg = make_number (XINT (arg) + ht); | |
6df47b59 GM |
4620 | |
4621 | pos = *vmotion (PT, - XINT (arg), w); | |
4622 | charpos = pos.bufpos; | |
4623 | bytepos = pos.bytepos; | |
4624 | } | |
4625 | ||
4626 | /* Set the new window start. */ | |
4627 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 4628 | w->window_end_valid = Qnil; |
7ab12479 | 4629 | w->force_start = Qt; |
6df47b59 GM |
4630 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
4631 | w->start_at_line_beg = Qt; | |
4632 | else | |
4633 | w->start_at_line_beg = Qnil; | |
4634 | ||
478292ed | 4635 | set_buffer_internal (obuf); |
7ab12479 JB |
4636 | return Qnil; |
4637 | } | |
b7617575 GM |
4638 | |
4639 | ||
81fe0836 | 4640 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
4641 | 0, 1, 0, |
4642 | doc: /* Return the height in lines of the text display area of WINDOW. | |
4643 | This doesn't include the mode-line (or header-line if any) or any | |
4644 | partial-height lines in the text display area. */) | |
4645 | (window) | |
81fe0836 MB |
4646 | Lisp_Object window; |
4647 | { | |
4648 | struct window *w = decode_window (window); | |
4649 | int pixel_height = window_box_height (w); | |
4650 | int line_height = pixel_height / CANON_Y_UNIT (XFRAME (w->frame)); | |
4651 | return make_number (line_height); | |
4652 | } | |
4653 | ||
4654 | ||
7ab12479 JB |
4655 | \f |
4656 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
4657 | 1, 1, "P", |
4658 | doc: /* Position point relative to window. | |
4659 | With no argument, position point at center of window. | |
4660 | An argument specifies vertical position within the window; | |
4661 | zero means top of window, negative means relative to bottom of window. */) | |
4662 | (arg) | |
b7617575 | 4663 | Lisp_Object arg; |
7ab12479 | 4664 | { |
b7617575 GM |
4665 | struct window *w = XWINDOW (selected_window); |
4666 | int lines, start; | |
540b6aa0 | 4667 | Lisp_Object window; |
7ab12479 | 4668 | |
b7617575 | 4669 | window = selected_window; |
7ab12479 JB |
4670 | start = marker_position (w->start); |
4671 | if (start < BEGV || start > ZV) | |
4672 | { | |
b7617575 | 4673 | int height = window_internal_height (w); |
cd2be1dd | 4674 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4675 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4676 | w->start_at_line_beg = Fbolp (); |
4677 | w->force_start = Qt; | |
4678 | } | |
4679 | else | |
b73ea88e | 4680 | Fgoto_char (w->start); |
7ab12479 | 4681 | |
b7617575 GM |
4682 | lines = displayed_window_lines (w); |
4683 | if (NILP (arg)) | |
4684 | XSETFASTINT (arg, lines / 2); | |
4685 | else | |
4686 | { | |
4687 | arg = Fprefix_numeric_value (arg); | |
4688 | if (XINT (arg) < 0) | |
4689 | XSETINT (arg, XINT (arg) + lines); | |
4690 | } | |
4691 | ||
c8bc6f65 | 4692 | /* Skip past a partially visible first line. */ |
163784df | 4693 | if (w->vscroll) |
163784df MB |
4694 | XSETINT (arg, XINT (arg) + 1); |
4695 | ||
540b6aa0 | 4696 | return Fvertical_motion (arg, window); |
7ab12479 | 4697 | } |
5500c422 GM |
4698 | |
4699 | ||
7ab12479 | 4700 | \f |
5500c422 GM |
4701 | /*********************************************************************** |
4702 | Window Configuration | |
4703 | ***********************************************************************/ | |
4704 | ||
7ab12479 JB |
4705 | struct save_window_data |
4706 | { | |
f5ccc0cc | 4707 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4708 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4709 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4710 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4711 | Lisp_Object selected_frame; |
7ab12479 JB |
4712 | Lisp_Object current_window; |
4713 | Lisp_Object current_buffer; | |
4714 | Lisp_Object minibuf_scroll_window; | |
4715 | Lisp_Object root_window; | |
bdc727bf | 4716 | Lisp_Object focus_frame; |
756b6edc RS |
4717 | /* Record the values of window-min-width and window-min-height |
4718 | so that window sizes remain consistent with them. */ | |
4719 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4720 | /* A vector, each of whose elements is a struct saved_window |
4721 | for one window. */ | |
7ab12479 JB |
4722 | Lisp_Object saved_windows; |
4723 | }; | |
ff06df24 | 4724 | |
cbff28e8 | 4725 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 4726 | struct saved_window |
ea68264b GM |
4727 | { |
4728 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
4729 | EMACS_INT size_from_Lisp_Vector_struct; | |
4730 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 4731 | |
ea68264b GM |
4732 | Lisp_Object window; |
4733 | Lisp_Object buffer, start, pointm, mark; | |
4734 | Lisp_Object left, top, width, height, hscroll, min_hscroll; | |
4735 | Lisp_Object parent, prev; | |
4736 | Lisp_Object start_at_line_beg; | |
4737 | Lisp_Object display_table; | |
4738 | Lisp_Object orig_top, orig_height; | |
4739 | }; | |
4740 | ||
4741 | #define SAVED_WINDOW_VECTOR_SIZE 17 /* Arg to Fmake_vector */ | |
7ab12479 JB |
4742 | |
4743 | #define SAVED_WINDOW_N(swv,n) \ | |
4744 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4745 | ||
4746 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
4747 | doc: /* Return t if OBJECT is a window-configuration object. */) |
4748 | (object) | |
413430c5 | 4749 | Lisp_Object object; |
7ab12479 | 4750 | { |
413430c5 | 4751 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4752 | return Qt; |
4753 | return Qnil; | |
4754 | } | |
4755 | ||
3f8ab7bd | 4756 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
4757 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
4758 | (config) | |
3f8ab7bd RS |
4759 | Lisp_Object config; |
4760 | { | |
4761 | register struct save_window_data *data; | |
4762 | struct Lisp_Vector *saved_windows; | |
4763 | ||
4764 | if (! WINDOW_CONFIGURATIONP (config)) | |
4765 | wrong_type_argument (Qwindow_configuration_p, config); | |
4766 | ||
4767 | data = (struct save_window_data *) XVECTOR (config); | |
4768 | saved_windows = XVECTOR (data->saved_windows); | |
4769 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4770 | } | |
4771 | ||
d5b2799e | 4772 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
4773 | Sset_window_configuration, 1, 1, 0, |
4774 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
4775 | CONFIGURATION must be a value previously returned | |
4776 | by `current-window-configuration' (which see). | |
4777 | If CONFIGURATION was made from a frame that is now deleted, | |
4778 | only frame-independent values can be restored. In this case, | |
4779 | the return value is nil. Otherwise the value is t. */) | |
4780 | (configuration) | |
2f83aebe | 4781 | Lisp_Object configuration; |
7ab12479 | 4782 | { |
7ab12479 JB |
4783 | register struct save_window_data *data; |
4784 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4785 | Lisp_Object new_current_buffer; |
fd482be5 | 4786 | Lisp_Object frame; |
44fa5b1e | 4787 | FRAME_PTR f; |
d2b35234 | 4788 | int old_point = -1; |
7ab12479 | 4789 | |
017b2bad | 4790 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4791 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4792 | |
2f83aebe | 4793 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4794 | saved_windows = XVECTOR (data->saved_windows); |
4795 | ||
7ab12479 | 4796 | new_current_buffer = data->current_buffer; |
265a9e55 | 4797 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4798 | new_current_buffer = Qnil; |
d2b35234 RS |
4799 | else |
4800 | { | |
4801 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4802 | old_point = PT; | |
4803 | } | |
7ab12479 | 4804 | |
fd482be5 JB |
4805 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4806 | f = XFRAME (frame); | |
aa35ba9e | 4807 | |
fd482be5 JB |
4808 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4809 | However, there is other stuff we should still try to do below. */ | |
4810 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4811 | { |
fd482be5 JB |
4812 | register struct window *w; |
4813 | register struct saved_window *p; | |
5500c422 GM |
4814 | struct window *root_window; |
4815 | struct window **leaf_windows; | |
4816 | int n_leaf_windows; | |
c4280705 | 4817 | int k, i, n; |
fd482be5 JB |
4818 | |
4819 | /* If the frame has been resized since this window configuration was | |
4820 | made, we change the frame to the size specified in the | |
4821 | configuration, restore the configuration, and then resize it | |
4822 | back. We keep track of the prevailing height in these variables. */ | |
4823 | int previous_frame_height = FRAME_HEIGHT (f); | |
4824 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4825 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4826 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4827 | |
d2b35234 RS |
4828 | /* The mouse highlighting code could get screwed up |
4829 | if it runs during this. */ | |
4830 | BLOCK_INPUT; | |
4831 | ||
fd482be5 JB |
4832 | if (XFASTINT (data->frame_height) != previous_frame_height |
4833 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4834 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4835 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4836 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4837 | if (XFASTINT (data->frame_menu_bar_lines) |
4838 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4839 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4840 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4841 | if (XFASTINT (data->frame_tool_bar_lines) |
4842 | != previous_frame_tool_bar_lines) | |
4843 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4844 | #endif |
217f2871 | 4845 | #endif |
fd482be5 | 4846 | |
719eaeb1 GM |
4847 | /* "Swap out" point from the selected window |
4848 | into its buffer. We do this now, before | |
4849 | restoring the window contents, and prevent it from | |
4850 | being done later on when we select a new window. */ | |
596ae0cf RS |
4851 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4852 | { | |
4853 | w = XWINDOW (selected_window); | |
4854 | set_marker_both (w->pointm, | |
4855 | w->buffer, | |
4856 | BUF_PT (XBUFFER (w->buffer)), | |
4857 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4858 | } | |
4859 | ||
fd482be5 | 4860 | windows_or_buffers_changed++; |
29aeee73 | 4861 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4862 | |
5500c422 GM |
4863 | /* Problem: Freeing all matrices and later allocating them again |
4864 | is a serious redisplay flickering problem. What we would | |
4865 | really like to do is to free only those matrices not reused | |
4866 | below. */ | |
4867 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4868 | leaf_windows | |
4869 | = (struct window **) alloca (count_windows (root_window) | |
4870 | * sizeof (struct window *)); | |
4871 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4872 | ||
756b6edc RS |
4873 | /* Temporarily avoid any problems with windows that are smaller |
4874 | than they are supposed to be. */ | |
4875 | window_min_height = 1; | |
4876 | window_min_width = 1; | |
4877 | ||
fd482be5 JB |
4878 | /* Kludge Alert! |
4879 | Mark all windows now on frame as "deleted". | |
4880 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4881 | |
fd482be5 JB |
4882 | Save their current buffers in their height fields, since we may |
4883 | need it later, if a buffer saved in the configuration is now | |
4884 | dead. */ | |
4885 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4886 | ||
4887 | for (k = 0; k < saved_windows->size; k++) | |
4888 | { | |
4889 | p = SAVED_WINDOW_N (saved_windows, k); | |
4890 | w = XWINDOW (p->window); | |
4891 | w->next = Qnil; | |
7ab12479 | 4892 | |
fd482be5 JB |
4893 | if (!NILP (p->parent)) |
4894 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4895 | XFASTINT (p->parent))->window; | |
4896 | else | |
4897 | w->parent = Qnil; | |
7ab12479 | 4898 | |
fd482be5 | 4899 | if (!NILP (p->prev)) |
7ab12479 | 4900 | { |
fd482be5 JB |
4901 | w->prev = SAVED_WINDOW_N (saved_windows, |
4902 | XFASTINT (p->prev))->window; | |
4903 | XWINDOW (w->prev)->next = p->window; | |
4904 | } | |
4905 | else | |
4906 | { | |
4907 | w->prev = Qnil; | |
4908 | if (!NILP (w->parent)) | |
4909 | { | |
4910 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4911 | { | |
4912 | XWINDOW (w->parent)->vchild = p->window; | |
4913 | XWINDOW (w->parent)->hchild = Qnil; | |
4914 | } | |
4915 | else | |
4916 | { | |
4917 | XWINDOW (w->parent)->hchild = p->window; | |
4918 | XWINDOW (w->parent)->vchild = Qnil; | |
4919 | } | |
4920 | } | |
4921 | } | |
4922 | ||
4923 | /* If we squirreled away the buffer in the window's height, | |
4924 | restore it now. */ | |
017b2bad | 4925 | if (BUFFERP (w->height)) |
fd482be5 JB |
4926 | w->buffer = w->height; |
4927 | w->left = p->left; | |
4928 | w->top = p->top; | |
4929 | w->width = p->width; | |
4930 | w->height = p->height; | |
4931 | w->hscroll = p->hscroll; | |
ea68264b | 4932 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 4933 | w->display_table = p->display_table; |
a1d58e5b GM |
4934 | w->orig_top = p->orig_top; |
4935 | w->orig_height = p->orig_height; | |
d834a2e9 | 4936 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4937 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4938 | |
4939 | /* Reinstall the saved buffer and pointers into it. */ | |
4940 | if (NILP (p->buffer)) | |
4941 | w->buffer = p->buffer; | |
4942 | else | |
4943 | { | |
4944 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4945 | /* If saved buffer is alive, install it. */ | |
4946 | { | |
4947 | w->buffer = p->buffer; | |
4948 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4949 | set_marker_restricted (w->start, p->start, w->buffer); |
4950 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4951 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4952 | p->mark, w->buffer); |
fd482be5 JB |
4953 | |
4954 | /* As documented in Fcurrent_window_configuration, don't | |
4955 | save the location of point in the buffer which was current | |
4956 | when the window configuration was recorded. */ | |
6b54027b RS |
4957 | if (!EQ (p->buffer, new_current_buffer) |
4958 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4959 | Fgoto_char (w->pointm); |
4960 | } | |
52a68e98 RS |
4961 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4962 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4963 | { |
fd482be5 JB |
4964 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4965 | /* This will set the markers to beginning of visible | |
4966 | range. */ | |
4967 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4968 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4969 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4970 | } |
4971 | else | |
fd482be5 | 4972 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4973 | are real. */ |
7ab12479 | 4974 | { |
fd482be5 JB |
4975 | /* Set window markers at start of visible range. */ |
4976 | if (XMARKER (w->start)->buffer == 0) | |
4977 | set_marker_restricted (w->start, make_number (0), | |
4978 | w->buffer); | |
4979 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4980 | set_marker_restricted_both (w->pointm, w->buffer, |
4981 | BUF_PT (XBUFFER (w->buffer)), | |
4982 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4983 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4984 | } |
4985 | } | |
4986 | } | |
9ace597f | 4987 | |
fd482be5 | 4988 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
4989 | /* Prevent "swapping out point" in the old selected window |
4990 | using the buffer that has been restored into it. | |
4991 | That swapping out has already been done, | |
4992 | near the beginning of this function. */ | |
4993 | selected_window = Qnil; | |
fd482be5 | 4994 | Fselect_window (data->current_window); |
396a830c RS |
4995 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
4996 | = selected_window; | |
7ab12479 | 4997 | |
db269683 | 4998 | if (NILP (data->focus_frame) |
017b2bad | 4999 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5000 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5001 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5002 | |
fd482be5 JB |
5003 | #if 0 /* I don't understand why this is needed, and it causes problems |
5004 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5005 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5006 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5007 | 0, 0); |
fd482be5 JB |
5008 | #endif |
5009 | ||
5010 | /* Set the screen height to the value it had before this function. */ | |
5011 | if (previous_frame_height != FRAME_HEIGHT (f) | |
5012 | || previous_frame_width != FRAME_WIDTH (f)) | |
5013 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 5014 | 0, 0, 0); |
e3678b64 | 5015 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5016 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5017 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5018 | make_number (0)); | |
4314246f | 5019 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5020 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5021 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5022 | make_number (0)); | |
4314246f | 5023 | #endif |
217f2871 | 5024 | #endif |
d2b35234 | 5025 | |
5500c422 | 5026 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5027 | for (i = n = 0; i < n_leaf_windows; ++i) |
5028 | { | |
5029 | if (NILP (leaf_windows[i]->buffer)) | |
5030 | { | |
5031 | /* Assert it's not reused as a combination. */ | |
5032 | xassert (NILP (leaf_windows[i]->hchild) | |
5033 | && NILP (leaf_windows[i]->vchild)); | |
5034 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5035 | } |
5036 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5037 | ++n; | |
5038 | } | |
5039 | ||
5040 | /* If more than one window shows the new and old current buffer, | |
5041 | don't try to preserve point in that buffer. */ | |
5042 | if (old_point > 0 && n > 1) | |
5043 | old_point = -1; | |
5500c422 GM |
5044 | |
5045 | adjust_glyphs (f); | |
5046 | ||
d2b35234 | 5047 | UNBLOCK_INPUT; |
756b6edc | 5048 | |
478292ed RS |
5049 | /* Fselect_window will have made f the selected frame, so we |
5050 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5051 | selected window too, but that doesn't make the call to | |
5052 | Fselect_window above totally superfluous; it still sets f's | |
5053 | selected window. */ | |
5054 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5055 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5056 | |
5057 | if (! NILP (Vwindow_configuration_change_hook) | |
5058 | && ! NILP (Vrun_hooks)) | |
5059 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5060 | } | |
bdc727bf JB |
5061 | |
5062 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
5063 | { |
5064 | Fset_buffer (new_current_buffer); | |
5065 | ||
5066 | /* If the buffer that is current now is the same | |
5067 | that was current before setting the window configuration, | |
5068 | don't alter its PT. */ | |
5069 | if (old_point >= 0) | |
5070 | SET_PT (old_point); | |
5071 | } | |
bdc727bf | 5072 | |
478292ed RS |
5073 | /* Restore the minimum heights recorded in the configuration. */ |
5074 | window_min_height = XINT (data->min_height); | |
5075 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5076 | |
478292ed | 5077 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 5078 | |
3f8ab7bd | 5079 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5080 | } |
5081 | ||
44fa5b1e | 5082 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5083 | by setting their buffers to nil. */ |
5084 | ||
fd482be5 | 5085 | void |
7ab12479 JB |
5086 | delete_all_subwindows (w) |
5087 | register struct window *w; | |
5088 | { | |
265a9e55 | 5089 | if (!NILP (w->next)) |
7ab12479 | 5090 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5091 | if (!NILP (w->vchild)) |
7ab12479 | 5092 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5093 | if (!NILP (w->hchild)) |
7ab12479 | 5094 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
5095 | |
5096 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
5097 | ||
86e48436 RS |
5098 | if (!NILP (w->buffer)) |
5099 | unshow_buffer (w); | |
5100 | ||
605be8af JB |
5101 | /* We set all three of these fields to nil, to make sure that we can |
5102 | distinguish this dead window from any live window. Live leaf | |
5103 | windows will have buffer set, and combination windows will have | |
5104 | vchild or hchild set. */ | |
5105 | w->buffer = Qnil; | |
5106 | w->vchild = Qnil; | |
5107 | w->hchild = Qnil; | |
acf70840 GM |
5108 | |
5109 | Vwindow_list = Qnil; | |
7ab12479 JB |
5110 | } |
5111 | \f | |
5112 | static int | |
5113 | count_windows (window) | |
5114 | register struct window *window; | |
5115 | { | |
5116 | register int count = 1; | |
265a9e55 | 5117 | if (!NILP (window->next)) |
7ab12479 | 5118 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5119 | if (!NILP (window->vchild)) |
7ab12479 | 5120 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5121 | if (!NILP (window->hchild)) |
7ab12479 JB |
5122 | count += count_windows (XWINDOW (window->hchild)); |
5123 | return count; | |
5124 | } | |
5125 | ||
5500c422 GM |
5126 | |
5127 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
5128 | Value is last index + 1. */ | |
5129 | ||
5130 | static int | |
5131 | get_leaf_windows (w, flat, i) | |
5132 | struct window *w; | |
5133 | struct window **flat; | |
5134 | int i; | |
5135 | { | |
5136 | while (w) | |
5137 | { | |
5138 | if (!NILP (w->hchild)) | |
5139 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5140 | else if (!NILP (w->vchild)) | |
5141 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
5142 | else | |
5143 | flat[i++] = w; | |
5144 | ||
5145 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5146 | } | |
5147 | ||
5148 | return i; | |
5149 | } | |
5150 | ||
5151 | ||
5152 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5153 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5154 | can be returned. */ | |
5155 | ||
5156 | struct glyph * | |
5157 | get_phys_cursor_glyph (w) | |
5158 | struct window *w; | |
5159 | { | |
5160 | struct glyph_row *row; | |
5161 | struct glyph *glyph; | |
5162 | ||
5163 | if (w->phys_cursor.vpos >= 0 | |
5164 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5165 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5166 | row->enabled_p) | |
5167 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5168 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5169 | else | |
5170 | glyph = NULL; | |
5171 | ||
5172 | return glyph; | |
5173 | } | |
5174 | ||
5175 | ||
7ab12479 JB |
5176 | static int |
5177 | save_window_save (window, vector, i) | |
5178 | Lisp_Object window; | |
5179 | struct Lisp_Vector *vector; | |
5180 | int i; | |
5181 | { | |
5182 | register struct saved_window *p; | |
5183 | register struct window *w; | |
5184 | register Lisp_Object tem; | |
5185 | ||
265a9e55 | 5186 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5187 | { |
5188 | p = SAVED_WINDOW_N (vector, i); | |
5189 | w = XWINDOW (window); | |
5190 | ||
d834a2e9 | 5191 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
5192 | p->window = window; |
5193 | p->buffer = w->buffer; | |
5194 | p->left = w->left; | |
5195 | p->top = w->top; | |
5196 | p->width = w->width; | |
5197 | p->height = w->height; | |
5198 | p->hscroll = w->hscroll; | |
ea68264b | 5199 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5200 | p->display_table = w->display_table; |
a1d58e5b GM |
5201 | p->orig_top = w->orig_top; |
5202 | p->orig_height = w->orig_height; | |
265a9e55 | 5203 | if (!NILP (w->buffer)) |
7ab12479 JB |
5204 | { |
5205 | /* Save w's value of point in the window configuration. | |
5206 | If w is the selected window, then get the value of point | |
5207 | from the buffer; pointm is garbage in the selected window. */ | |
5208 | if (EQ (window, selected_window)) | |
5209 | { | |
5210 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5211 | set_marker_both (p->pointm, w->buffer, |
5212 | BUF_PT (XBUFFER (w->buffer)), | |
5213 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5214 | } |
5215 | else | |
eeb82665 | 5216 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5217 | |
eeb82665 | 5218 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5219 | p->start_at_line_beg = w->start_at_line_beg; |
5220 | ||
5221 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 5222 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5223 | } |
5224 | else | |
5225 | { | |
5226 | p->pointm = Qnil; | |
5227 | p->start = Qnil; | |
5228 | p->mark = Qnil; | |
5229 | p->start_at_line_beg = Qnil; | |
5230 | } | |
5231 | ||
265a9e55 | 5232 | if (NILP (w->parent)) |
7ab12479 JB |
5233 | p->parent = Qnil; |
5234 | else | |
5235 | p->parent = XWINDOW (w->parent)->temslot; | |
5236 | ||
265a9e55 | 5237 | if (NILP (w->prev)) |
7ab12479 JB |
5238 | p->prev = Qnil; |
5239 | else | |
5240 | p->prev = XWINDOW (w->prev)->temslot; | |
5241 | ||
265a9e55 | 5242 | if (!NILP (w->vchild)) |
7ab12479 | 5243 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5244 | if (!NILP (w->hchild)) |
7ab12479 JB |
5245 | i = save_window_save (w->hchild, vector, i); |
5246 | } | |
5247 | ||
5248 | return i; | |
5249 | } | |
5250 | ||
a0d76c27 | 5251 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5252 | Scurrent_window_configuration, 0, 1, 0, |
5253 | doc: /* Return an object representing the current window configuration of FRAME. | |
5254 | If FRAME is nil or omitted, use the selected frame. | |
5255 | This describes the number of windows, their sizes and current buffers, | |
5256 | and for each displayed buffer, where display starts, and the positions of | |
5257 | point and mark. An exception is made for point in the current buffer: | |
5258 | its value is -not- saved. | |
5259 | This also records the currently selected frame, and FRAME's focus | |
5260 | redirection (see `redirect-frame-focus'). */) | |
5261 | (frame) | |
44fa5b1e | 5262 | Lisp_Object frame; |
7ab12479 JB |
5263 | { |
5264 | register Lisp_Object tem; | |
5265 | register int n_windows; | |
5266 | register struct save_window_data *data; | |
da2792e0 | 5267 | register struct Lisp_Vector *vec; |
7ab12479 | 5268 | register int i; |
44fa5b1e | 5269 | FRAME_PTR f; |
43bad991 | 5270 | |
44fa5b1e | 5271 | if (NILP (frame)) |
1ae1a37d | 5272 | frame = selected_frame; |
b7826503 | 5273 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 5274 | f = XFRAME (frame); |
7ab12479 | 5275 | |
44fa5b1e | 5276 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 5277 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
5278 | data = (struct save_window_data *)vec; |
5279 | ||
d834a2e9 KH |
5280 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
5281 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
5282 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 5283 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 5284 | data->selected_frame = selected_frame; |
44fa5b1e | 5285 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5286 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 5287 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 5288 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5289 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
5290 | XSETINT (data->min_height, window_min_height); |
5291 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5292 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5293 | data->saved_windows = tem; | |
5294 | for (i = 0; i < n_windows; i++) | |
5295 | XVECTOR (tem)->contents[i] | |
5296 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 5297 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5298 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5299 | return (tem); |
5300 | } | |
5301 | ||
5302 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 PJ |
5303 | 0, UNEVALLED, 0, |
5304 | doc: /* Execute body, preserving window sizes and contents. | |
5305 | Restore which buffer appears in which window, where display starts, | |
5306 | and the value of point and mark for each window. | |
5307 | Also restore the choice of selected window. | |
5308 | Also restore which buffer is current. | |
6924dda6 MB |
5309 | Does not restore the value of point in current buffer. |
5310 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 5311 | (args) |
7ab12479 JB |
5312 | Lisp_Object args; |
5313 | { | |
5314 | register Lisp_Object val; | |
5315 | register int count = specpdl_ptr - specpdl; | |
5316 | ||
5317 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5318 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5319 | val = Fprogn (args); |
5320 | return unbind_to (count, val); | |
5321 | } | |
5500c422 GM |
5322 | |
5323 | \f | |
5324 | /*********************************************************************** | |
5325 | Marginal Areas | |
5326 | ***********************************************************************/ | |
5327 | ||
5328 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5329 | 2, 3, 0, |
fdb82f93 PJ |
5330 | doc: /* Set width of marginal areas of window WINDOW. |
5331 | If window is nil, set margins of the currently selected window. | |
5332 | First parameter LEFT-WIDTH specifies the number of character | |
5333 | cells to reserve for the left marginal area. Second parameter | |
5334 | RIGHT-WIDTH does the same for the right marginal area. | |
5335 | A nil width parameter means no margin. */) | |
5336 | (window, left, right) | |
5500c422 GM |
5337 | Lisp_Object window, left, right; |
5338 | { | |
5339 | struct window *w = decode_window (window); | |
5500c422 GM |
5340 | |
5341 | if (!NILP (left)) | |
b7826503 | 5342 | CHECK_NUMBER_OR_FLOAT (left); |
5500c422 | 5343 | if (!NILP (right)) |
b7826503 | 5344 | CHECK_NUMBER_OR_FLOAT (right); |
5500c422 GM |
5345 | |
5346 | /* Check widths < 0 and translate a zero width to nil. | |
5347 | Margins that are too wide have to be checked elsewhere. */ | |
5348 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5349 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5350 | XSETFASTINT (left, 0); |
5351 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5352 | left = Qnil; | |
5353 | ||
5354 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 5355 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5356 | XSETFASTINT (right, 0); |
5357 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5358 | right = Qnil; | |
5359 | ||
5360 | w->left_margin_width = left; | |
5361 | w->right_margin_width = right; | |
5362 | ||
5363 | ++windows_or_buffers_changed; | |
5364 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5365 | return Qnil; | |
5366 | } | |
5367 | ||
5368 | ||
5369 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5370 | 0, 1, 0, | |
fdb82f93 PJ |
5371 | doc: /* Get width of marginal areas of window WINDOW. |
5372 | If WINDOW is omitted or nil, use the currently selected window. | |
5373 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
5374 | If a marginal area does not exist, its width will be returned | |
5375 | as nil. */) | |
5376 | (window) | |
5500c422 GM |
5377 | Lisp_Object window; |
5378 | { | |
5379 | struct window *w = decode_window (window); | |
5380 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5381 | } | |
5382 | ||
5383 | ||
7ab12479 | 5384 | \f |
5500c422 GM |
5385 | /*********************************************************************** |
5386 | Smooth scrolling | |
5387 | ***********************************************************************/ | |
5388 | ||
5389 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
fdb82f93 PJ |
5390 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
5391 | Use the selected window if WINDOW is nil or omitted. | |
5392 | Value is a multiple of the canonical character height of WINDOW. */) | |
5393 | (window) | |
5500c422 GM |
5394 | Lisp_Object window; |
5395 | { | |
47004952 | 5396 | Lisp_Object result; |
5500c422 GM |
5397 | struct frame *f; |
5398 | struct window *w; | |
5399 | ||
5400 | if (NILP (window)) | |
5401 | window = selected_window; | |
47004952 | 5402 | else |
b7826503 | 5403 | CHECK_WINDOW (window); |
5500c422 GM |
5404 | w = XWINDOW (window); |
5405 | f = XFRAME (w->frame); | |
5406 | ||
5407 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5408 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5409 | else |
47004952 GM |
5410 | result = make_number (0); |
5411 | return result; | |
5500c422 GM |
5412 | } |
5413 | ||
5414 | ||
5415 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 | 5416 | 2, 2, 0, |
fdb82f93 PJ |
5417 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
5418 | WINDOW nil or omitted means use the selected window. VSCROLL is a | |
5419 | non-negative multiple of the canonical character height of WINDOW. */) | |
5420 | (window, vscroll) | |
47004952 | 5421 | Lisp_Object window, vscroll; |
5500c422 GM |
5422 | { |
5423 | struct window *w; | |
5424 | struct frame *f; | |
5425 | ||
5500c422 GM |
5426 | if (NILP (window)) |
5427 | window = selected_window; | |
47004952 | 5428 | else |
b7826503 PJ |
5429 | CHECK_WINDOW (window); |
5430 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
47004952 | 5431 | |
5500c422 GM |
5432 | w = XWINDOW (window); |
5433 | f = XFRAME (w->frame); | |
5434 | ||
5435 | if (FRAME_WINDOW_P (f)) | |
5436 | { | |
5437 | int old_dy = w->vscroll; | |
47004952 GM |
5438 | |
5439 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5440 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5441 | |
5442 | /* Adjust glyph matrix of the frame if the virtual display | |
5443 | area becomes larger than before. */ | |
5444 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5445 | adjust_glyphs (f); | |
5446 | ||
5447 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5448 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5449 | } |
5450 | ||
47004952 | 5451 | return Fwindow_vscroll (window); |
5500c422 GM |
5452 | } |
5453 | ||
7bbb5782 GM |
5454 | \f |
5455 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5456 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5457 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5458 | |
5459 | void | |
f95464e4 | 5460 | foreach_window (f, fn, user_data) |
7bbb5782 | 5461 | struct frame *f; |
f95464e4 GM |
5462 | int (* fn) P_ ((struct window *, void *)); |
5463 | void *user_data; | |
7bbb5782 | 5464 | { |
f95464e4 | 5465 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5466 | } |
5467 | ||
5468 | ||
5469 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5470 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5471 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5472 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5473 | |
67492200 | 5474 | static int |
f95464e4 | 5475 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5476 | struct window *w; |
f95464e4 GM |
5477 | int (* fn) P_ ((struct window *, void *)); |
5478 | void *user_data; | |
7bbb5782 | 5479 | { |
67492200 GM |
5480 | int cont; |
5481 | ||
5482 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5483 | { |
5484 | if (!NILP (w->hchild)) | |
f95464e4 | 5485 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5486 | else if (!NILP (w->vchild)) |
f95464e4 | 5487 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
0f532a9a GM |
5488 | else |
5489 | cont = fn (w, user_data); | |
7bbb5782 GM |
5490 | |
5491 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5492 | } | |
67492200 GM |
5493 | |
5494 | return cont; | |
7bbb5782 GM |
5495 | } |
5496 | ||
5497 | ||
6d194a45 | 5498 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 5499 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5500 | the window start. */ |
5501 | ||
67492200 | 5502 | static int |
7bbb5782 GM |
5503 | freeze_window_start (w, freeze_p) |
5504 | struct window *w; | |
f95464e4 | 5505 | void *freeze_p; |
7bbb5782 GM |
5506 | { |
5507 | if (w == XWINDOW (selected_window) | |
5508 | || MINI_WINDOW_P (w) | |
5509 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5510 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5511 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5512 | freeze_p = NULL; |
7bbb5782 | 5513 | |
f95464e4 | 5514 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5515 | return 1; |
7bbb5782 GM |
5516 | } |
5517 | ||
5518 | ||
5519 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5520 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5521 | means freeze the window start. */ | |
5522 | ||
5523 | void | |
5524 | freeze_window_starts (f, freeze_p) | |
5525 | struct frame *f; | |
5526 | int freeze_p; | |
5527 | { | |
cbccabec | 5528 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5529 | } |
5500c422 GM |
5530 | |
5531 | \f | |
5532 | /*********************************************************************** | |
5533 | Initialization | |
5534 | ***********************************************************************/ | |
5535 | ||
cbff28e8 RS |
5536 | /* Return 1 if window configurations C1 and C2 |
5537 | describe the same state of affairs. This is used by Fequal. */ | |
5538 | ||
5539 | int | |
2f8274be | 5540 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5541 | Lisp_Object c1, c2; |
2f8274be | 5542 | int ignore_positions; |
cbff28e8 RS |
5543 | { |
5544 | register struct save_window_data *d1, *d2; | |
5545 | struct Lisp_Vector *sw1, *sw2; | |
5546 | int i; | |
5547 | ||
4d3edcb4 GM |
5548 | if (!WINDOW_CONFIGURATIONP (c1)) |
5549 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5550 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5551 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5552 | ||
cbff28e8 RS |
5553 | d1 = (struct save_window_data *) XVECTOR (c1); |
5554 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5555 | sw1 = XVECTOR (d1->saved_windows); | |
5556 | sw2 = XVECTOR (d2->saved_windows); | |
5557 | ||
5558 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5559 | return 0; | |
5560 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5561 | return 0; | |
5562 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5563 | return 0; | |
5564 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5565 | return 0; | |
5566 | /* Don't compare the current_window field directly. | |
5567 | Instead see w1_is_current and w2_is_current, below. */ | |
5568 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5569 | return 0; | |
2f8274be RS |
5570 | if (! ignore_positions) |
5571 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5572 | return 0; | |
cbff28e8 RS |
5573 | /* Don't compare the root_window field. |
5574 | We don't require the two configurations | |
5575 | to use the same window object, | |
5576 | and the two root windows must be equivalent | |
5577 | if everything else compares equal. */ | |
5578 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5579 | return 0; | |
5580 | if (! EQ (d1->min_width, d2->min_width)) | |
5581 | return 0; | |
5582 | if (! EQ (d1->min_height, d2->min_height)) | |
5583 | return 0; | |
5584 | ||
5585 | /* Verify that the two confis have the same number of windows. */ | |
5586 | if (sw1->size != sw2->size) | |
5587 | return 0; | |
5588 | ||
5589 | for (i = 0; i < sw1->size; i++) | |
5590 | { | |
5591 | struct saved_window *p1, *p2; | |
5592 | int w1_is_current, w2_is_current; | |
5593 | ||
5594 | p1 = SAVED_WINDOW_N (sw1, i); | |
5595 | p2 = SAVED_WINDOW_N (sw2, i); | |
5596 | ||
5597 | /* Verify that the current windows in the two | |
5598 | configurations correspond to each other. */ | |
5599 | w1_is_current = EQ (d1->current_window, p1->window); | |
5600 | w2_is_current = EQ (d2->current_window, p2->window); | |
5601 | ||
5602 | if (w1_is_current != w2_is_current) | |
5603 | return 0; | |
5604 | ||
5605 | /* Verify that the corresponding windows do match. */ | |
5606 | if (! EQ (p1->buffer, p2->buffer)) | |
5607 | return 0; | |
5608 | if (! EQ (p1->left, p2->left)) | |
5609 | return 0; | |
5610 | if (! EQ (p1->top, p2->top)) | |
5611 | return 0; | |
5612 | if (! EQ (p1->width, p2->width)) | |
5613 | return 0; | |
5614 | if (! EQ (p1->height, p2->height)) | |
5615 | return 0; | |
cbff28e8 RS |
5616 | if (! EQ (p1->display_table, p2->display_table)) |
5617 | return 0; | |
5618 | if (! EQ (p1->parent, p2->parent)) | |
5619 | return 0; | |
5620 | if (! EQ (p1->prev, p2->prev)) | |
5621 | return 0; | |
2f8274be RS |
5622 | if (! ignore_positions) |
5623 | { | |
5624 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5625 | return 0; | |
ea68264b GM |
5626 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
5627 | return 0; | |
2f8274be RS |
5628 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
5629 | return 0; | |
5630 | if (NILP (Fequal (p1->start, p2->start))) | |
5631 | return 0; | |
5632 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5633 | return 0; | |
5634 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5635 | return 0; | |
5636 | } | |
cbff28e8 RS |
5637 | } |
5638 | ||
5639 | return 1; | |
5640 | } | |
2f8274be RS |
5641 | |
5642 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5643 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
5644 | doc: /* Compare two window configurations as regards the structure of windows. |
5645 | This function ignores details such as the values of point and mark | |
5646 | and scrolling positions. */) | |
5647 | (x, y) | |
2f8274be RS |
5648 | Lisp_Object x, y; |
5649 | { | |
5650 | if (compare_window_configurations (x, y, 1)) | |
5651 | return Qt; | |
5652 | return Qnil; | |
5653 | } | |
cbff28e8 | 5654 | \f |
dfcf069d | 5655 | void |
7ab12479 JB |
5656 | init_window_once () |
5657 | { | |
1ae1a37d GM |
5658 | struct frame *f = make_terminal_frame (); |
5659 | XSETFRAME (selected_frame, f); | |
5660 | Vterminal_frame = selected_frame; | |
5661 | minibuf_window = f->minibuffer_window; | |
5662 | selected_window = f->selected_window; | |
5663 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5664 | |
5665 | window_initialized = 1; | |
7ab12479 JB |
5666 | } |
5667 | ||
67492200 GM |
5668 | void |
5669 | init_window () | |
5670 | { | |
5671 | Vwindow_list = Qnil; | |
5672 | } | |
5673 | ||
dfcf069d | 5674 | void |
7ab12479 JB |
5675 | syms_of_window () |
5676 | { | |
7442878f GM |
5677 | Qleft_fringe = intern ("left-fringe"); |
5678 | staticpro (&Qleft_fringe); | |
5679 | Qright_fringe = intern ("right-fringe"); | |
5680 | staticpro (&Qright_fringe); | |
fbad6f9a | 5681 | |
8a37516b GM |
5682 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5683 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5684 | |
543f5fb1 RS |
5685 | staticpro (&Qwindow_configuration_change_hook); |
5686 | Qwindow_configuration_change_hook | |
5687 | = intern ("window-configuration-change-hook"); | |
5688 | ||
7ab12479 JB |
5689 | Qwindowp = intern ("windowp"); |
5690 | staticpro (&Qwindowp); | |
5691 | ||
3f8ab7bd RS |
5692 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5693 | staticpro (&Qwindow_configuration_p); | |
5694 | ||
806b4d9b JB |
5695 | Qwindow_live_p = intern ("window-live-p"); |
5696 | staticpro (&Qwindow_live_p); | |
605be8af | 5697 | |
2cccc823 | 5698 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5699 | staticpro (&Qtemp_buffer_show_hook); |
5700 | ||
67492200 GM |
5701 | staticpro (&Vwindow_list); |
5702 | ||
7ab12479 | 5703 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
5704 | doc: /* Non-nil means call as function to display a help buffer. |
5705 | The function is called with one argument, the buffer to be displayed. | |
5706 | Used by `with-output-to-temp-buffer'. | |
5707 | If this function is used, then it must do the entire job of showing | |
5708 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
5709 | Vtemp_buffer_show_function = Qnil; |
5710 | ||
5711 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
5712 | doc: /* If non-nil, function to call to handle `display-buffer'. |
5713 | It will receive two args, the buffer and a flag which if non-nil means | |
5714 | that the currently selected window is not acceptable. | |
5715 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' | |
5716 | work using this function. */); | |
7ab12479 JB |
5717 | Vdisplay_buffer_function = Qnil; |
5718 | ||
6529ed87 | 5719 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
5720 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
5721 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
5722 | Veven_window_heights = Qt; |
5723 | ||
7ab12479 | 5724 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 5725 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
5726 | Vminibuf_scroll_window = Qnil; |
5727 | ||
5728 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
fdb82f93 | 5729 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
5730 | Vother_window_scroll_buffer = Qnil; |
5731 | ||
44fa5b1e | 5732 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 5733 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 5734 | pop_up_frames = 0; |
7ab12479 | 5735 | |
9c3da604 | 5736 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
5737 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
5738 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
5739 | display_buffer_reuse_frames = 0; |
5740 | ||
44fa5b1e | 5741 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
5742 | doc: /* Function to call to handle automatic new frame creation. |
5743 | It is called with no arguments and should return a newly created frame. | |
5744 | ||
5745 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
5746 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 5747 | Vpop_up_frame_function = Qnil; |
7ab12479 | 5748 | |
a90712c2 | 5749 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 PJ |
5750 | doc: /* *List of buffer names that should have their own special frames. |
5751 | Displaying a buffer whose name is in this list makes a special frame for it | |
5752 | using `special-display-function'. See also `special-display-regexps'. | |
5753 | ||
5754 | An element of the list can be a list instead of just a string. | |
5755 | There are two ways to use a list as an element: | |
5756 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
5757 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5758 | In the latter case, FUNCTION is called with BUFFER as the first argument, | |
5759 | followed by OTHER-ARGS--it can display BUFFER in any way it likes. | |
5760 | All this is done by the function found in `special-display-function'. | |
5761 | ||
5762 | If this variable appears \"not to work\", because you add a name to it | |
5763 | but that buffer still appears in the selected window, look at the | |
5764 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5765 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5766 | Vspecial_display_buffer_names = Qnil; |
5767 | ||
5768 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 PJ |
5769 | doc: /* *List of regexps saying which buffers should have their own special frames. |
5770 | If a buffer name matches one of these regexps, it gets its own frame. | |
5771 | Displaying a buffer whose name is in this list makes a special frame for it | |
5772 | using `special-display-function'. | |
5773 | ||
5774 | An element of the list can be a list instead of just a string. | |
5775 | There are two ways to use a list as an element: | |
5776 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
5777 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5778 | In the latter case, FUNCTION is called with the buffer as first argument, | |
5779 | followed by OTHER-ARGS--it can display the buffer in any way it likes. | |
5780 | All this is done by the function found in `special-display-function'. | |
5781 | ||
5782 | If this variable appears \"not to work\", because you add a regexp to it | |
5783 | but the matching buffers still appear in the selected window, look at the | |
5784 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5785 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5786 | Vspecial_display_regexps = Qnil; |
5787 | ||
5788 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
5789 | doc: /* Function to call to make a new frame for a special buffer. |
5790 | It is called with two arguments, the buffer and optional buffer specific | |
5791 | data, and should return a window displaying that buffer. | |
5792 | The default value makes a separate frame for the buffer, | |
5793 | using `special-display-frame-alist' to specify the frame parameters. | |
5794 | ||
5795 | A buffer is special if its is listed in `special-display-buffer-names' | |
5796 | or matches a regexp in `special-display-regexps'. */); | |
a90712c2 RS |
5797 | Vspecial_display_function = Qnil; |
5798 | ||
855d8627 | 5799 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
5800 | doc: /* *List of buffer names that should appear in the selected window. |
5801 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
5802 | switches to it in the selected window, rather than making it appear | |
5803 | in some other window. | |
5804 | ||
5805 | An element of the list can be a cons cell instead of just a string. | |
5806 | Then the car must be a string, which specifies the buffer name. | |
5807 | This is for compatibility with `special-display-buffer-names'; | |
5808 | the cdr of the cons cell is ignored. | |
5809 | ||
5810 | See also `same-window-regexps'. */); | |
855d8627 RS |
5811 | Vsame_window_buffer_names = Qnil; |
5812 | ||
5813 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
5814 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
5815 | If a buffer name matches one of these regexps, then displaying it | |
5816 | using `display-buffer' or `pop-to-buffer' switches to it | |
5817 | in the selected window, rather than making it appear in some other window. | |
5818 | ||
5819 | An element of the list can be a cons cell instead of just a string. | |
5820 | Then the car must be a string, which specifies the buffer name. | |
5821 | This is for compatibility with `special-display-buffer-names'; | |
5822 | the cdr of the cons cell is ignored. | |
5823 | ||
5824 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
5825 | Vsame_window_regexps = Qnil; |
5826 | ||
7ab12479 | 5827 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 5828 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
5829 | pop_up_windows = 1; |
5830 | ||
5831 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 5832 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
5833 | next_screen_context_lines = 2; |
5834 | ||
5835 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
fdb82f93 PJ |
5836 | doc: /* *display-buffer would prefer to split the largest window if this large. |
5837 | If there is only one window, it is split regardless of this value. */); | |
7ab12479 JB |
5838 | split_height_threshold = 500; |
5839 | ||
5840 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 5841 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
5842 | window_min_height = 4; |
5843 | ||
5844 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 5845 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
5846 | window_min_width = 10; |
5847 | ||
5500c422 GM |
5848 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5849 | &Vscroll_preserve_screen_position, | |
fdb82f93 | 5850 | doc: /* *Non-nil means scroll commands move point to keep its screen line unchanged. */); |
5500c422 | 5851 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5852 | |
543f5fb1 RS |
5853 | DEFVAR_LISP ("window-configuration-change-hook", |
5854 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
5855 | doc: /* Functions to call when window configuration changes. |
5856 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
5857 | Vwindow_configuration_change_hook = Qnil; |
5858 | ||
b0b7ed0e | 5859 | DEFVAR_BOOL ("window-size-fixed", &window_size_fixed, |
fdb82f93 PJ |
5860 | doc: /* Non-nil in a buffer means windows displaying the buffer are fixed-size. |
5861 | Emacs won't change the size of any window displaying that buffer, | |
5862 | unless you explicitly change the size, or Emacs has no other choice. | |
5863 | This variable automatically becomes buffer-local when set. */); | |
b0b7ed0e GM |
5864 | Fmake_variable_buffer_local (Qwindow_size_fixed); |
5865 | window_size_fixed = 0; | |
5866 | ||
7ab12479 JB |
5867 | defsubr (&Sselected_window); |
5868 | defsubr (&Sminibuffer_window); | |
5869 | defsubr (&Swindow_minibuffer_p); | |
5870 | defsubr (&Swindowp); | |
806b4d9b | 5871 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5872 | defsubr (&Spos_visible_in_window_p); |
5873 | defsubr (&Swindow_buffer); | |
5874 | defsubr (&Swindow_height); | |
5875 | defsubr (&Swindow_width); | |
5876 | defsubr (&Swindow_hscroll); | |
5877 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5878 | defsubr (&Swindow_redisplay_end_trigger); |
5879 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5880 | defsubr (&Swindow_edges); |
d5783c40 JB |
5881 | defsubr (&Scoordinates_in_window_p); |
5882 | defsubr (&Swindow_at); | |
7ab12479 JB |
5883 | defsubr (&Swindow_point); |
5884 | defsubr (&Swindow_start); | |
5885 | defsubr (&Swindow_end); | |
5886 | defsubr (&Sset_window_point); | |
5887 | defsubr (&Sset_window_start); | |
5888 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5889 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5890 | defsubr (&Swindow_display_table); |
5891 | defsubr (&Sset_window_display_table); | |
5892 | defsubr (&Snext_window); | |
5893 | defsubr (&Sprevious_window); | |
5894 | defsubr (&Sother_window); | |
5895 | defsubr (&Sget_lru_window); | |
5896 | defsubr (&Sget_largest_window); | |
5897 | defsubr (&Sget_buffer_window); | |
5898 | defsubr (&Sdelete_other_windows); | |
5899 | defsubr (&Sdelete_windows_on); | |
5900 | defsubr (&Sreplace_buffer_in_windows); | |
5901 | defsubr (&Sdelete_window); | |
5902 | defsubr (&Sset_window_buffer); | |
5903 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5904 | defsubr (&Sspecial_display_p); |
5905 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5906 | defsubr (&Sdisplay_buffer); |
5907 | defsubr (&Ssplit_window); | |
5908 | defsubr (&Senlarge_window); | |
5909 | defsubr (&Sshrink_window); | |
5910 | defsubr (&Sscroll_up); | |
5911 | defsubr (&Sscroll_down); | |
5912 | defsubr (&Sscroll_left); | |
5913 | defsubr (&Sscroll_right); | |
ccd0664b | 5914 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5915 | defsubr (&Sscroll_other_window); |
5916 | defsubr (&Srecenter); | |
81fe0836 | 5917 | defsubr (&Swindow_text_height); |
7ab12479 JB |
5918 | defsubr (&Smove_to_window_line); |
5919 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5920 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5921 | defsubr (&Sset_window_configuration); |
5922 | defsubr (&Scurrent_window_configuration); | |
5923 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5924 | defsubr (&Sset_window_margins); |
5925 | defsubr (&Swindow_margins); | |
5926 | defsubr (&Swindow_vscroll); | |
5927 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5928 | defsubr (&Scompare_window_configurations); |
67492200 | 5929 | defsubr (&Swindow_list); |
7ab12479 JB |
5930 | } |
5931 | ||
dfcf069d | 5932 | void |
7ab12479 JB |
5933 | keys_of_window () |
5934 | { | |
5935 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5936 | initial_define_key (control_x_map, '2', "split-window"); | |
5937 | initial_define_key (control_x_map, '0', "delete-window"); | |
5938 | initial_define_key (control_x_map, 'o', "other-window"); | |
5939 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5940 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5941 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5942 | ||
5943 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5944 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5945 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5946 | ||
5947 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5948 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5949 | } |