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 GM |
50 | |
51 | #ifndef max | |
52 | #define max(a, b) ((a) < (b) ? (b) : (a)) | |
dfcf069d | 53 | #endif |
7ab12479 | 54 | |
7442878f GM |
55 | /* Values returned from coordinates_in_window. */ |
56 | ||
57 | enum window_part | |
58 | { | |
59 | ON_NOTHING, | |
60 | ON_TEXT, | |
61 | ON_MODE_LINE, | |
62 | ON_VERTICAL_BORDER, | |
63 | ON_HEADER_LINE, | |
64 | ON_LEFT_FRINGE, | |
65 | ON_RIGHT_FRINGE | |
66 | }; | |
67 | ||
5500c422 | 68 | |
3f8ab7bd | 69 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
7442878f | 70 | Lisp_Object Qwindow_size_fixed, Qleft_fringe, Qright_fringe; |
233a4a2c | 71 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 72 | |
521b203e | 73 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 74 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 75 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
76 | static int count_windows P_ ((struct window *)); |
77 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
78 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
79 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
80 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 81 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 82 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 83 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 84 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 85 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
86c8e823 | 86 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 87 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 88 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
89 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
90 | Lisp_Object)); | |
67492200 GM |
91 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
92 | Lisp_Object, int)); | |
93 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
94 | Lisp_Object *)); | |
f95464e4 GM |
95 | static int foreach_window_1 P_ ((struct window *, |
96 | int (* fn) (struct window *, void *), | |
97 | void *)); | |
cd2904bd | 98 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 99 | |
b0b7ed0e GM |
100 | /* The value of `window-size-fixed'. */ |
101 | ||
102 | int window_size_fixed; | |
103 | ||
7ab12479 JB |
104 | /* This is the window in which the terminal's cursor should |
105 | be left when nothing is being done with it. This must | |
106 | always be a leaf window, and its buffer is selected by | |
107 | the top level editing loop at the end of each command. | |
108 | ||
109 | This value is always the same as | |
44fa5b1e | 110 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
111 | |
112 | Lisp_Object selected_window; | |
113 | ||
67492200 GM |
114 | /* A list of all windows for use by next_window and Fwindow_list. |
115 | Functions creating or deleting windows should invalidate this cache | |
116 | by setting it to nil. */ | |
117 | ||
118 | Lisp_Object Vwindow_list; | |
119 | ||
5500c422 GM |
120 | /* The mini-buffer window of the selected frame. |
121 | Note that you cannot test for mini-bufferness of an arbitrary window | |
122 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 123 | the selected window. */ |
5500c422 | 124 | |
7ab12479 JB |
125 | Lisp_Object minibuf_window; |
126 | ||
127 | /* Non-nil means it is the window for C-M-v to scroll | |
5500c422 GM |
128 | when the mini-buffer is selected. */ |
129 | ||
7ab12479 JB |
130 | Lisp_Object Vminibuf_scroll_window; |
131 | ||
132 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 133 | |
7ab12479 JB |
134 | Lisp_Object Vother_window_scroll_buffer; |
135 | ||
7ab12479 | 136 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 137 | |
7ab12479 JB |
138 | Lisp_Object Vtemp_buffer_show_function; |
139 | ||
140 | /* If a window gets smaller than either of these, it is removed. */ | |
5500c422 | 141 | |
7ab12479 JB |
142 | int window_min_height; |
143 | int window_min_width; | |
144 | ||
145 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 146 | |
7ab12479 JB |
147 | int pop_up_windows; |
148 | ||
44fa5b1e | 149 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 150 | |
44fa5b1e | 151 | int pop_up_frames; |
7ab12479 | 152 | |
9c3da604 GM |
153 | /* Nonzero means reuse existing frames for displaying buffers. */ |
154 | ||
155 | int display_buffer_reuse_frames; | |
156 | ||
7ab12479 | 157 | /* Non-nil means use this function instead of default */ |
5500c422 | 158 | |
44fa5b1e | 159 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
160 | |
161 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 162 | |
7ab12479 JB |
163 | Lisp_Object Vdisplay_buffer_function; |
164 | ||
6529ed87 GM |
165 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
166 | ||
167 | Lisp_Object Veven_window_heights; | |
168 | ||
a90712c2 | 169 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 170 | |
a90712c2 RS |
171 | Lisp_Object Vspecial_display_buffer_names; |
172 | ||
173 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 174 | |
a90712c2 RS |
175 | Lisp_Object Vspecial_display_regexps; |
176 | ||
177 | /* Function to pop up a special frame. */ | |
5500c422 | 178 | |
a90712c2 RS |
179 | Lisp_Object Vspecial_display_function; |
180 | ||
855d8627 | 181 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 182 | |
855d8627 RS |
183 | Lisp_Object Vsame_window_buffer_names; |
184 | ||
185 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 186 | |
855d8627 RS |
187 | Lisp_Object Vsame_window_regexps; |
188 | ||
a58ec57d | 189 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 190 | |
a58ec57d RS |
191 | Lisp_Object Qtemp_buffer_show_hook; |
192 | ||
37962e60 | 193 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 194 | if that window is more than this high. */ |
5500c422 | 195 | |
7ab12479 JB |
196 | int split_height_threshold; |
197 | ||
198 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 199 | |
7ab12479 JB |
200 | int next_screen_context_lines; |
201 | ||
202 | /* Incremented for each window created. */ | |
5500c422 | 203 | |
7ab12479 JB |
204 | static int sequence_number; |
205 | ||
5b03d3c0 | 206 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 207 | |
5b03d3c0 RS |
208 | static int window_initialized; |
209 | ||
543f5fb1 | 210 | /* Hook to run when window config changes. */ |
5500c422 | 211 | |
543f5fb1 RS |
212 | Lisp_Object Qwindow_configuration_change_hook; |
213 | Lisp_Object Vwindow_configuration_change_hook; | |
214 | ||
9317a85d RS |
215 | /* Nonzero means scroll commands try to put point |
216 | at the same screen height as previously. */ | |
9317a85d | 217 | |
5500c422 GM |
218 | Lisp_Object Vscroll_preserve_screen_position; |
219 | ||
220 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 221 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 222 | static int inhibit_frame_unsplittable; |
5500c422 | 223 | #endif /* 0 */ |
7d601aaa | 224 | |
9317a85d RS |
225 | extern int scroll_margin; |
226 | ||
dba06815 | 227 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
228 | \f |
229 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
230 | doc: /* Returns t if OBJECT is a window. */) |
231 | (object) | |
413430c5 | 232 | Lisp_Object object; |
7ab12479 | 233 | { |
413430c5 | 234 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
235 | } |
236 | ||
806b4d9b | 237 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 238 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
239 | (object) |
240 | Lisp_Object object; | |
605be8af | 241 | { |
9e571f49 | 242 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
243 | } |
244 | ||
7ab12479 JB |
245 | Lisp_Object |
246 | make_window () | |
247 | { | |
cffec418 | 248 | Lisp_Object val; |
7ab12479 | 249 | register struct window *p; |
cffec418 | 250 | |
26605be9 | 251 | p = allocate_window (); |
d834a2e9 KH |
252 | XSETFASTINT (p->sequence_number, ++sequence_number); |
253 | XSETFASTINT (p->left, 0); | |
254 | XSETFASTINT (p->top, 0); | |
255 | XSETFASTINT (p->height, 0); | |
256 | XSETFASTINT (p->width, 0); | |
257 | XSETFASTINT (p->hscroll, 0); | |
ea68264b | 258 | XSETFASTINT (p->min_hscroll, 0); |
f984d4fc | 259 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
260 | p->start = Fmake_marker (); |
261 | p->pointm = Fmake_marker (); | |
d834a2e9 | 262 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 263 | p->frame = Qnil; |
7ab12479 JB |
264 | p->display_table = Qnil; |
265 | p->dedicated = Qnil; | |
5500c422 GM |
266 | p->pseudo_window_p = 0; |
267 | bzero (&p->cursor, sizeof (p->cursor)); | |
268 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
269 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
270 | p->desired_matrix = p->current_matrix = 0; | |
271 | p->phys_cursor_type = -1; | |
272 | p->must_be_updated_p = 0; | |
273 | XSETFASTINT (p->window_end_vpos, 0); | |
274 | XSETFASTINT (p->window_end_pos, 0); | |
275 | p->window_end_valid = Qnil; | |
276 | p->vscroll = 0; | |
cffec418 | 277 | XSETWINDOW (val, p); |
5500c422 | 278 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 279 | p->frozen_window_start_p = 0; |
67492200 GM |
280 | |
281 | Vwindow_list = Qnil; | |
7ab12479 JB |
282 | return val; |
283 | } | |
284 | ||
285 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
286 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
287 | () | |
7ab12479 JB |
288 | { |
289 | return selected_window; | |
290 | } | |
291 | ||
83762ba4 | 292 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
293 | doc: /* Return the window used now for minibuffers. |
294 | If the optional argument FRAME is specified, return the minibuffer window | |
295 | used by that frame. */) | |
296 | (frame) | |
83762ba4 | 297 | Lisp_Object frame; |
7ab12479 | 298 | { |
83762ba4 | 299 | if (NILP (frame)) |
1ae1a37d GM |
300 | frame = selected_frame; |
301 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 | 302 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
303 | } |
304 | ||
605be8af | 305 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
fdb82f93 PJ |
306 | doc: /* Returns non-nil if WINDOW is a minibuffer window. */) |
307 | (window) | |
7ab12479 JB |
308 | Lisp_Object window; |
309 | { | |
310 | struct window *w = decode_window (window); | |
53bb6b99 | 311 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
312 | } |
313 | ||
314 | ||
7ab12479 | 315 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 PJ |
316 | Spos_visible_in_window_p, 0, 3, 0, |
317 | doc: /* Return t if position POS is currently on the frame in WINDOW. | |
318 | Return nil if that position is scrolled vertically out of view. | |
319 | If a character is only partially visible, nil is returned, unless the | |
320 | optional argument PARTIALLY is non-nil. | |
321 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. */) | |
322 | (pos, window, partially) | |
5cdb3cf3 | 323 | Lisp_Object pos, window, partially; |
7ab12479 JB |
324 | { |
325 | register struct window *w; | |
7ab12479 JB |
326 | register int posint; |
327 | register struct buffer *buf; | |
9a132b1f GM |
328 | struct text_pos top; |
329 | Lisp_Object in_window; | |
53bb6b99 | 330 | int fully_p; |
7ab12479 | 331 | |
f28b75a9 MB |
332 | w = decode_window (window); |
333 | buf = XBUFFER (w->buffer); | |
334 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
335 | ||
336 | if (!NILP (pos)) | |
7ab12479 JB |
337 | { |
338 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
339 | posint = XINT (pos); | |
340 | } | |
f28b75a9 MB |
341 | else if (w == XWINDOW (selected_window)) |
342 | posint = PT; | |
343 | else | |
344 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 345 | |
53bb6b99 | 346 | /* If position is above window start, it's not visible. */ |
5500c422 | 347 | if (posint < CHARPOS (top)) |
9a132b1f GM |
348 | in_window = Qnil; |
349 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
81e4d465 MB |
350 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) |
351 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
81e4d465 | 352 | { |
53bb6b99 GM |
353 | /* If frame is up-to-date, and POSINT is < window end pos, use |
354 | that info. This doesn't work for POSINT == end pos, because | |
355 | the window end pos is actually the position _after_ the last | |
356 | char in the window. */ | |
5cdb3cf3 | 357 | if (NILP (partially)) |
53bb6b99 | 358 | { |
5cdb3cf3 | 359 | pos_visible_p (w, posint, &fully_p, NILP (partially)); |
53bb6b99 GM |
360 | in_window = fully_p ? Qt : Qnil; |
361 | } | |
81e4d465 | 362 | else |
53bb6b99 | 363 | in_window = Qt; |
81e4d465 | 364 | } |
9a132b1f GM |
365 | else if (posint > BUF_ZV (buf)) |
366 | in_window = Qnil; | |
367 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
368 | /* If window start is out of range, do something reasonable. */ | |
369 | in_window = Qnil; | |
7ab12479 JB |
370 | else |
371 | { | |
5cdb3cf3 MB |
372 | if (pos_visible_p (w, posint, &fully_p, NILP (partially))) |
373 | in_window = !NILP (partially) || fully_p ? Qt : Qnil; | |
81e4d465 MB |
374 | else |
375 | in_window = Qnil; | |
7ab12479 | 376 | } |
9a132b1f GM |
377 | |
378 | return in_window; | |
7ab12479 | 379 | } |
53bb6b99 | 380 | |
7ab12479 JB |
381 | \f |
382 | static struct window * | |
383 | decode_window (window) | |
384 | register Lisp_Object window; | |
385 | { | |
265a9e55 | 386 | if (NILP (window)) |
7ab12479 JB |
387 | return XWINDOW (selected_window); |
388 | ||
605be8af | 389 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
390 | return XWINDOW (window); |
391 | } | |
392 | ||
393 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
fdb82f93 PJ |
394 | doc: /* Return the buffer that WINDOW is displaying. */) |
395 | (window) | |
7ab12479 JB |
396 | Lisp_Object window; |
397 | { | |
398 | return decode_window (window)->buffer; | |
399 | } | |
400 | ||
401 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
402 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
403 | (window) | |
7ab12479 JB |
404 | Lisp_Object window; |
405 | { | |
406 | return decode_window (window)->height; | |
407 | } | |
408 | ||
409 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
410 | doc: /* Return the number of display columns in WINDOW. |
411 | This is the width that is usable columns available for text in WINDOW. | |
412 | If you want to find out how many columns WINDOW takes up, | |
413 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
414 | (window) | |
7ab12479 JB |
415 | Lisp_Object window; |
416 | { | |
ee61d94e | 417 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
418 | } |
419 | ||
420 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
421 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
422 | (window) | |
7ab12479 JB |
423 | Lisp_Object window; |
424 | { | |
425 | return decode_window (window)->hscroll; | |
426 | } | |
427 | ||
428 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 PJ |
429 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
430 | NCOL should be zero or positive. */) | |
431 | (window, ncol) | |
ea68264b | 432 | Lisp_Object window, ncol; |
7ab12479 | 433 | { |
ea68264b GM |
434 | struct window *w = decode_window (window); |
435 | int hscroll; | |
7ab12479 JB |
436 | |
437 | CHECK_NUMBER (ncol, 1); | |
ea68264b GM |
438 | hscroll = max (0, XINT (ncol)); |
439 | ||
440 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
441 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 442 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
ea68264b | 443 | |
c67fa410 | 444 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
445 | return ncol; |
446 | } | |
447 | ||
190eb263 RS |
448 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
449 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
450 | doc: /* Return WINDOW's redisplay end trigger value. |
451 | See `set-window-redisplay-end-trigger' for more information. */) | |
452 | (window) | |
190eb263 RS |
453 | Lisp_Object window; |
454 | { | |
455 | return decode_window (window)->redisplay_end_trigger; | |
456 | } | |
457 | ||
458 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
459 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
460 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
461 | VALUE should be a buffer position (typically a marker) or nil. | |
462 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
463 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
464 | with two arguments: WINDOW, and the end trigger value. | |
465 | Afterwards the end-trigger value is reset to nil. */) | |
466 | (window, value) | |
190eb263 RS |
467 | register Lisp_Object window, value; |
468 | { | |
469 | register struct window *w; | |
470 | ||
471 | w = decode_window (window); | |
472 | w->redisplay_end_trigger = value; | |
473 | return value; | |
474 | } | |
475 | ||
7ab12479 | 476 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
477 | doc: /* Return a list of the edge coordinates of WINDOW. |
478 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
479 | RIGHT is one more than the rightmost column used by WINDOW, | |
480 | and BOTTOM is one more than the bottommost row used by WINDOW | |
481 | and its mode-line. */) | |
482 | (window) | |
7ab12479 JB |
483 | Lisp_Object window; |
484 | { | |
485 | register struct window *w = decode_window (window); | |
486 | ||
487 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 488 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
489 | Fcons (make_number (XFASTINT (w->top) |
490 | + XFASTINT (w->height)), | |
491 | Qnil)))); | |
492 | } | |
493 | ||
fbad6f9a | 494 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
495 | If it is not, return 0; |
496 | if it is in the window's text area, | |
497 | set *x and *y to its location relative to the upper left corner | |
498 | of the window, and | |
499 | return 1; | |
500 | if it is on the window's modeline, return 2; | |
501 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
502 | return 3. |
503 | if it is on the window's top line, return 4; | |
fbad6f9a GM |
504 | if it is in the bitmap area to the left/right of the window, |
505 | return 5 or 6, and convert *X and *Y to window-relative corrdinates. | |
5500c422 GM |
506 | |
507 | X and Y are frame relative pixel coordinates. */ | |
508 | ||
7442878f | 509 | static enum window_part |
d5783c40 JB |
510 | coordinates_in_window (w, x, y) |
511 | register struct window *w; | |
512 | register int *x, *y; | |
513 | { | |
1cb794ba GM |
514 | /* Let's make this a global enum later, instead of using numbers |
515 | everywhere. */ | |
b0228ace GM |
516 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
517 | int left_x, right_x, top_y, bottom_y; | |
518 | int flags_area_width = FRAME_LEFT_FLAGS_AREA_WIDTH (f); | |
7442878f | 519 | enum window_part part; |
b0228ace GM |
520 | int ux = CANON_X_UNIT (f), uy = CANON_Y_UNIT (f); |
521 | int x0 = XFASTINT (w->left) * ux; | |
522 | int x1 = x0 + XFASTINT (w->width) * ux; | |
dad75588 GM |
523 | /* The width of the area where the vertical line can be dragged. |
524 | (Between mode lines for instance. */ | |
525 | int grabbable_width = ux; | |
b0228ace GM |
526 | |
527 | if (*x < x0 || *x >= x1) | |
528 | return ON_NOTHING; | |
529 | ||
466539bc EZ |
530 | /* In what's below, we subtract 1 when computing right_x because we |
531 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
532 | if (w->pseudo_window_p) |
533 | { | |
534 | left_x = 0; | |
b0228ace | 535 | right_x = XFASTINT (w->width) * CANON_X_UNIT (f) - 1; |
5500c422 GM |
536 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); |
537 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
538 | } | |
539 | else | |
540 | { | |
2add4349 | 541 | left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w) |
50df5e5a | 542 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
466539bc | 543 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1; |
2add4349 | 544 | top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w) |
50df5e5a | 545 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
5500c422 GM |
546 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); |
547 | } | |
37962e60 | 548 | |
1cb794ba GM |
549 | /* On the mode line or header line? If it's near the start of |
550 | the mode or header line of window that's has a horizontal | |
551 | sibling, say it's on the vertical line. That's to be able | |
552 | to resize windows horizontally in case we're using toolkit | |
553 | scroll bars. */ | |
b0228ace | 554 | |
1cb794ba | 555 | if (WINDOW_WANTS_MODELINE_P (w) |
b0228ace GM |
556 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) |
557 | && *y < bottom_y) | |
1cb794ba | 558 | { |
b0228ace GM |
559 | /* We're somewhere on the mode line. We consider the place |
560 | between mode lines of horizontally adjacent mode lines | |
561 | as the vertical border. If scroll bars on the left, | |
562 | return the right window. */ | |
563 | part = ON_MODE_LINE; | |
564 | ||
565 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
566 | { | |
dad75588 | 567 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
568 | part = ON_VERTICAL_BORDER; |
569 | } | |
dad75588 | 570 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace | 571 | part = ON_VERTICAL_BORDER; |
1cb794ba | 572 | } |
b0228ace GM |
573 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
574 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
575 | && *y >= top_y) | |
576 | { | |
577 | part = ON_HEADER_LINE; | |
578 | ||
579 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
580 | { | |
dad75588 | 581 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
582 | part = ON_VERTICAL_BORDER; |
583 | } | |
dad75588 | 584 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace GM |
585 | part = ON_VERTICAL_BORDER; |
586 | } | |
587 | /* Outside anything interesting? */ | |
588 | else if (*y < top_y | |
589 | || *y >= bottom_y | |
590 | || *x < (left_x | |
591 | - flags_area_width | |
592 | - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * ux) | |
7442878f GM |
593 | || *x > (right_x |
594 | + flags_area_width | |
595 | + FRAME_RIGHT_SCROLL_BAR_WIDTH (f) * ux)) | |
1cb794ba | 596 | { |
b0228ace | 597 | part = ON_NOTHING; |
1cb794ba | 598 | } |
b0228ace | 599 | else if (FRAME_WINDOW_P (f)) |
fbad6f9a | 600 | { |
447e9da0 GM |
601 | if (!w->pseudo_window_p |
602 | && !FRAME_HAS_VERTICAL_SCROLL_BARS (f) | |
603 | && !WINDOW_RIGHTMOST_P (w) | |
dad75588 | 604 | && (abs (*x - right_x - flags_area_width) < grabbable_width)) |
b0228ace GM |
605 | { |
606 | part = ON_VERTICAL_BORDER; | |
607 | } | |
608 | else if (*x < left_x || *x > right_x) | |
447e9da0 GM |
609 | { |
610 | /* Other lines than the mode line don't include flags areas and | |
611 | scroll bars on the left. */ | |
fbad6f9a | 612 | |
447e9da0 GM |
613 | /* Convert X and Y to window-relative pixel coordinates. */ |
614 | *x -= left_x; | |
615 | *y -= top_y; | |
b0228ace GM |
616 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
617 | } | |
618 | else | |
619 | { | |
620 | *x -= left_x; | |
621 | *y -= top_y; | |
622 | part = ON_TEXT; | |
447e9da0 | 623 | } |
fbad6f9a | 624 | } |
447e9da0 GM |
625 | else |
626 | { | |
627 | /* Need to say "*x > right_x" rather than >=, since on character | |
628 | terminals, the vertical line's x coordinate is right_x. */ | |
629 | if (*x < left_x || *x > right_x) | |
630 | { | |
631 | /* Other lines than the mode line don't include flags areas and | |
632 | scroll bars on the left. */ | |
633 | ||
634 | /* Convert X and Y to window-relative pixel coordinates. */ | |
635 | *x -= left_x; | |
636 | *y -= top_y; | |
b0228ace | 637 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
447e9da0 | 638 | } |
447e9da0 | 639 | /* Here, too, "*x > right_x" is because of character terminals. */ |
b0228ace GM |
640 | else if (!w->pseudo_window_p |
641 | && !WINDOW_RIGHTMOST_P (w) | |
642 | && *x > right_x - ux) | |
643 | { | |
644 | /* On the border on the right side of the window? Assume that | |
645 | this area begins at RIGHT_X minus a canonical char width. */ | |
646 | part = ON_VERTICAL_BORDER; | |
647 | } | |
648 | else | |
649 | { | |
650 | /* Convert X and Y to window-relative pixel coordinates. */ | |
651 | *x -= left_x; | |
652 | *y -= top_y; | |
653 | part = ON_TEXT; | |
654 | } | |
447e9da0 | 655 | } |
b0228ace GM |
656 | |
657 | return part; | |
d5783c40 JB |
658 | } |
659 | ||
b0228ace | 660 | |
d5783c40 | 661 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
662 | Scoordinates_in_window_p, 2, 2, 0, |
663 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
664 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
665 | measured in characters from the upper-left corner of the frame. | |
666 | \(0 . 0) denotes the character in the upper left corner of the | |
667 | frame. | |
668 | If COORDINATES are in the text portion of WINDOW, | |
669 | the coordinates relative to the window are returned. | |
670 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
671 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
672 | If they are in the fringe to the left of the window, | |
673 | `left-fringe' is returned, if they are in the area on the right of | |
674 | the window, `right-fringe' is returned. | |
675 | If they are on the border between WINDOW and its right sibling, | |
676 | `vertical-line' is returned. */) | |
677 | (coordinates, window) | |
d5783c40 JB |
678 | register Lisp_Object coordinates, window; |
679 | { | |
5500c422 GM |
680 | struct window *w; |
681 | struct frame *f; | |
d5783c40 | 682 | int x, y; |
5500c422 | 683 | Lisp_Object lx, ly; |
d5783c40 | 684 | |
605be8af | 685 | CHECK_LIVE_WINDOW (window, 0); |
5500c422 GM |
686 | w = XWINDOW (window); |
687 | f = XFRAME (w->frame); | |
d5783c40 | 688 | CHECK_CONS (coordinates, 1); |
5500c422 GM |
689 | lx = Fcar (coordinates); |
690 | ly = Fcdr (coordinates); | |
691 | CHECK_NUMBER_OR_FLOAT (lx, 1); | |
692 | CHECK_NUMBER_OR_FLOAT (ly, 1); | |
693 | x = PIXEL_X_FROM_CANON_X (f, lx); | |
694 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
695 | ||
696 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 697 | { |
7442878f | 698 | case ON_NOTHING: |
d5783c40 JB |
699 | return Qnil; |
700 | ||
7442878f GM |
701 | case ON_TEXT: |
702 | /* X and Y are now window relative pixel coordinates. Convert | |
703 | them to canonical char units before returning them. */ | |
5500c422 GM |
704 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), |
705 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 706 | |
7442878f | 707 | case ON_MODE_LINE: |
d5783c40 | 708 | return Qmode_line; |
37962e60 | 709 | |
7442878f | 710 | case ON_VERTICAL_BORDER: |
e5d77022 | 711 | return Qvertical_line; |
d5783c40 | 712 | |
7442878f | 713 | case ON_HEADER_LINE: |
045dee35 | 714 | return Qheader_line; |
5500c422 | 715 | |
7442878f GM |
716 | case ON_LEFT_FRINGE: |
717 | return Qleft_fringe; | |
fbad6f9a | 718 | |
7442878f GM |
719 | case ON_RIGHT_FRINGE: |
720 | return Qright_fringe; | |
fbad6f9a | 721 | |
d5783c40 JB |
722 | default: |
723 | abort (); | |
724 | } | |
725 | } | |
726 | ||
67492200 GM |
727 | |
728 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
729 | Check if window W contains coordinates specified by USER_DATA which |
730 | is actually a pointer to a struct check_window_data CW. | |
731 | ||
732 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
733 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 734 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
735 | zero from this function to stop iterating over windows. */ |
736 | ||
737 | struct check_window_data | |
738 | { | |
739 | Lisp_Object *window; | |
740 | int *x, *y, *part; | |
741 | }; | |
67492200 GM |
742 | |
743 | static int | |
f95464e4 | 744 | check_window_containing (w, user_data) |
67492200 | 745 | struct window *w; |
f95464e4 | 746 | void *user_data; |
67492200 | 747 | { |
f95464e4 | 748 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
749 | enum window_part found; |
750 | int continue_p = 1; | |
67492200 | 751 | |
f95464e4 | 752 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 753 | if (found != ON_NOTHING) |
67492200 | 754 | { |
f95464e4 GM |
755 | *cw->part = found - 1; |
756 | XSETWINDOW (*cw->window, w); | |
7442878f | 757 | continue_p = 0; |
67492200 GM |
758 | } |
759 | ||
7442878f | 760 | return continue_p; |
67492200 GM |
761 | } |
762 | ||
763 | ||
5500c422 GM |
764 | /* Find the window containing frame-relative pixel position X/Y and |
765 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
766 | set *PART to 1; if it is on the separating line between the window | |
767 | and its right sibling, set it to 2; otherwise set it to 0. If | |
768 | there is no window under X, Y return nil and leave *PART | |
67492200 GM |
769 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
770 | ||
771 | This function was previously implemented with a loop cycling over | |
772 | windows with Fnext_window, and starting with the frame's selected | |
773 | window. It turned out that this doesn't work with an | |
774 | implementation of next_window using Vwindow_list, because | |
775 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
776 | tree of F when this function is called asynchronously from | |
777 | note_mouse_highlight. The original loop didn't terminate in this | |
778 | case. */ | |
5500c422 | 779 | |
7ab12479 | 780 | Lisp_Object |
67492200 GM |
781 | window_from_coordinates (f, x, y, part, tool_bar_p) |
782 | struct frame *f; | |
7ab12479 | 783 | int x, y; |
d5783c40 | 784 | int *part; |
9ea173e8 | 785 | int tool_bar_p; |
7ab12479 | 786 | { |
67492200 | 787 | Lisp_Object window; |
f95464e4 | 788 | struct check_window_data cw; |
5500c422 | 789 | |
67492200 | 790 | window = Qnil; |
f95464e4 GM |
791 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
792 | foreach_window (f, check_window_containing, &cw); | |
67492200 GM |
793 | |
794 | /* If not found above, see if it's in the tool bar window, if a tool | |
795 | bar exists. */ | |
796 | if (NILP (window) | |
797 | && tool_bar_p | |
798 | && WINDOWP (f->tool_bar_window) | |
799 | && XINT (XWINDOW (f->tool_bar_window)->height) > 0 | |
7442878f GM |
800 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
801 | != ON_NOTHING)) | |
5500c422 GM |
802 | { |
803 | *part = 0; | |
67492200 | 804 | window = f->tool_bar_window; |
5500c422 | 805 | } |
37962e60 | 806 | |
67492200 | 807 | return window; |
7ab12479 JB |
808 | } |
809 | ||
ab17c3f2 | 810 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
811 | doc: /* Return window containing coordinates X and Y on FRAME. |
812 | If omitted, FRAME defaults to the currently selected frame. | |
813 | The top left corner of the frame is considered to be row 0, | |
814 | column 0. */) | |
815 | (x, y, frame) | |
816 | Lisp_Object x, y, frame; | |
7ab12479 JB |
817 | { |
818 | int part; | |
5500c422 | 819 | struct frame *f; |
7ab12479 | 820 | |
44fa5b1e | 821 | if (NILP (frame)) |
1ae1a37d GM |
822 | frame = selected_frame; |
823 | CHECK_LIVE_FRAME (frame, 2); | |
5500c422 | 824 | f = XFRAME (frame); |
7ab12479 | 825 | |
5500c422 GM |
826 | /* Check that arguments are integers or floats. */ |
827 | CHECK_NUMBER_OR_FLOAT (x, 0); | |
828 | CHECK_NUMBER_OR_FLOAT (y, 1); | |
829 | ||
830 | return window_from_coordinates (f, | |
831 | PIXEL_X_FROM_CANON_X (f, x), | |
832 | PIXEL_Y_FROM_CANON_Y (f, y), | |
833 | &part, 0); | |
7ab12479 JB |
834 | } |
835 | ||
836 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
837 | doc: /* Return current value of point in WINDOW. |
838 | For a nonselected window, this is the value point would have | |
839 | if that window were selected. | |
840 | ||
841 | Note that, when WINDOW is the selected window and its buffer | |
842 | is also currently selected, the value returned is the same as (point). | |
843 | It would be more strictly correct to return the `top-level' value | |
844 | of point, outside of any save-excursion forms. | |
845 | But that is hard to define. */) | |
846 | (window) | |
7ab12479 JB |
847 | Lisp_Object window; |
848 | { | |
849 | register struct window *w = decode_window (window); | |
850 | ||
851 | if (w == XWINDOW (selected_window) | |
852 | && current_buffer == XBUFFER (w->buffer)) | |
853 | return Fpoint (); | |
854 | return Fmarker_position (w->pointm); | |
855 | } | |
856 | ||
857 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
858 | doc: /* Return position at which display currently starts in WINDOW. |
859 | This is updated by redisplay or by calling `set-window-start'. */) | |
860 | (window) | |
7ab12479 JB |
861 | Lisp_Object window; |
862 | { | |
863 | return Fmarker_position (decode_window (window)->start); | |
864 | } | |
865 | ||
8646118f RS |
866 | /* This is text temporarily removed from the doc string below. |
867 | ||
fdb82f93 PJ |
868 | This function returns nil if the position is not currently known. |
869 | That happens when redisplay is preempted and doesn't finish. | |
870 | If in that case you want to compute where the end of the window would | |
871 | have been if redisplay had finished, do this: | |
872 | (save-excursion | |
873 | (goto-char (window-start window)) | |
874 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
875 | (point))") */ |
876 | ||
478292ed | 877 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
878 | doc: /* Return position at which display currently ends in WINDOW. |
879 | This is updated by redisplay, when it runs to completion. | |
880 | Simply changing the buffer text or setting `window-start' | |
881 | does not update this value. | |
882 | If UPDATE is non-nil, compute the up-to-date position | |
883 | if it isn't already recorded. */) | |
884 | (window, update) | |
478292ed | 885 | Lisp_Object window, update; |
7ab12479 JB |
886 | { |
887 | Lisp_Object value; | |
888 | struct window *w = decode_window (window); | |
5a41ab94 RS |
889 | Lisp_Object buf; |
890 | ||
891 | buf = w->buffer; | |
892 | CHECK_BUFFER (buf, 0); | |
893 | ||
8646118f | 894 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
895 | /* If we don't know the end position, return nil. |
896 | The user can compute it with vertical-motion if he wants to. | |
897 | It would be nicer to do it automatically, | |
898 | but that's so slow that it would probably bother people. */ | |
899 | if (NILP (w->window_end_valid)) | |
900 | return Qnil; | |
8646118f | 901 | #endif |
7250968e | 902 | |
478292ed RS |
903 | if (! NILP (update) |
904 | && ! (! NILP (w->window_end_valid) | |
905 | && XFASTINT (w->last_modified) >= MODIFF)) | |
906 | { | |
cbc099e5 GM |
907 | struct text_pos startp; |
908 | struct it it; | |
99593a9d | 909 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
910 | |
911 | /* In case W->start is out of the range, use something | |
912 | reasonable. This situation occured when loading a file with | |
913 | `-l' containing a call to `rmail' with subsequent other | |
914 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 915 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 916 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 917 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 918 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 919 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 920 | else |
cbc099e5 GM |
921 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
922 | ||
923 | /* Cannot use Fvertical_motion because that function doesn't | |
924 | cope with variable-height lines. */ | |
99593a9d GM |
925 | if (b != current_buffer) |
926 | { | |
927 | old_buffer = current_buffer; | |
928 | set_buffer_internal (b); | |
929 | } | |
930 | ||
cbc099e5 GM |
931 | start_display (&it, w, startp); |
932 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
933 | if (it.current_y < it.last_visible_y) |
934 | move_it_past_eol (&it); | |
cbc099e5 | 935 | value = make_number (IT_CHARPOS (it)); |
99593a9d GM |
936 | |
937 | if (old_buffer) | |
938 | set_buffer_internal (old_buffer); | |
478292ed RS |
939 | } |
940 | else | |
cbc099e5 | 941 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
942 | |
943 | return value; | |
944 | } | |
945 | ||
946 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
fdb82f93 PJ |
947 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. */) |
948 | (window, pos) | |
7ab12479 JB |
949 | Lisp_Object window, pos; |
950 | { | |
951 | register struct window *w = decode_window (window); | |
952 | ||
953 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
e90c4fe6 RS |
954 | if (w == XWINDOW (selected_window) |
955 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
956 | Fgoto_char (pos); |
957 | else | |
958 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 959 | |
0685cb3c GM |
960 | /* We have to make sure that redisplay updates the window to show |
961 | the new value of point. */ | |
962 | if (!EQ (window, selected_window)) | |
799417bd | 963 | ++windows_or_buffers_changed; |
ce7fae7d | 964 | |
7ab12479 JB |
965 | return pos; |
966 | } | |
967 | ||
968 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 PJ |
969 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
970 | Optional third arg NOFORCE non-nil inhibits next redisplay | |
971 | from overriding motion of point in order to display at this exact start. */) | |
972 | (window, pos, noforce) | |
7ab12479 JB |
973 | Lisp_Object window, pos, noforce; |
974 | { | |
975 | register struct window *w = decode_window (window); | |
976 | ||
977 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
978 | set_marker_restricted (w->start, pos, w->buffer); | |
979 | /* this is not right, but much easier than doing what is right. */ | |
980 | w->start_at_line_beg = Qnil; | |
265a9e55 | 981 | if (NILP (noforce)) |
7ab12479 JB |
982 | w->force_start = Qt; |
983 | w->update_mode_line = Qt; | |
d834a2e9 | 984 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 985 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
986 | if (!EQ (window, selected_window)) |
987 | windows_or_buffers_changed++; | |
ce7fae7d | 988 | |
7ab12479 JB |
989 | return pos; |
990 | } | |
991 | ||
992 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
993 | 1, 1, 0, | |
fdb82f93 PJ |
994 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
995 | See also `set-window-dedicated-p'. */) | |
996 | (window) | |
7ab12479 JB |
997 | Lisp_Object window; |
998 | { | |
999 | return decode_window (window)->dedicated; | |
1000 | } | |
1001 | ||
d207b766 RS |
1002 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1003 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1004 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1005 | If it is dedicated, Emacs will not automatically change | |
1006 | which buffer appears in it. | |
1007 | The second argument is the new value for the dedication flag; | |
1008 | non-nil means yes. */) | |
1009 | (window, arg) | |
1010 | Lisp_Object window, arg; | |
7ab12479 JB |
1011 | { |
1012 | register struct window *w = decode_window (window); | |
1013 | ||
265a9e55 | 1014 | if (NILP (arg)) |
7ab12479 JB |
1015 | w->dedicated = Qnil; |
1016 | else | |
d207b766 | 1017 | w->dedicated = Qt; |
7ab12479 JB |
1018 | |
1019 | return w->dedicated; | |
1020 | } | |
1021 | ||
1022 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1023 | 0, 1, 0, | |
fdb82f93 PJ |
1024 | doc: /* Return the display-table that WINDOW is using. */) |
1025 | (window) | |
7ab12479 JB |
1026 | Lisp_Object window; |
1027 | { | |
1028 | return decode_window (window)->display_table; | |
1029 | } | |
1030 | ||
5500c422 GM |
1031 | /* Get the display table for use on window W. This is either W's |
1032 | display table or W's buffer's display table. Ignore the specified | |
1033 | tables if they are not valid; if no valid table is specified, | |
1034 | return 0. */ | |
7ab12479 | 1035 | |
319315f1 | 1036 | struct Lisp_Char_Table * |
7ab12479 JB |
1037 | window_display_table (w) |
1038 | struct window *w; | |
1039 | { | |
c756cdbe GM |
1040 | struct Lisp_Char_Table *dp = NULL; |
1041 | ||
1042 | if (DISP_TABLE_P (w->display_table)) | |
1043 | dp = XCHAR_TABLE (w->display_table); | |
1044 | else if (BUFFERP (w->buffer)) | |
1045 | { | |
1046 | struct buffer *b = XBUFFER (w->buffer); | |
1047 | ||
1048 | if (DISP_TABLE_P (b->display_table)) | |
1049 | dp = XCHAR_TABLE (b->display_table); | |
1050 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1051 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1052 | } | |
171d003c | 1053 | |
c756cdbe | 1054 | return dp; |
7ab12479 JB |
1055 | } |
1056 | ||
3a2712f9 | 1057 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1058 | doc: /* Set WINDOW's display-table to TABLE. */) |
1059 | (window, table) | |
7ab12479 JB |
1060 | register Lisp_Object window, table; |
1061 | { | |
1062 | register struct window *w; | |
7ab12479 JB |
1063 | |
1064 | w = decode_window (window); | |
1065 | w->display_table = table; | |
1066 | return table; | |
1067 | } | |
1068 | \f | |
1069 | /* Record info on buffer window w is displaying | |
1070 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1071 | static void |
7ab12479 JB |
1072 | unshow_buffer (w) |
1073 | register struct window *w; | |
1074 | { | |
12cae7c0 | 1075 | Lisp_Object buf; |
b73ea88e | 1076 | struct buffer *b; |
7ab12479 | 1077 | |
12cae7c0 | 1078 | buf = w->buffer; |
b73ea88e RS |
1079 | b = XBUFFER (buf); |
1080 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1081 | abort (); |
1082 | ||
573f41ab | 1083 | #if 0 |
7ab12479 JB |
1084 | if (w == XWINDOW (selected_window) |
1085 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1086 | /* Do this except when the selected window's buffer | |
1087 | is being removed from some other window. */ | |
573f41ab RS |
1088 | #endif |
1089 | /* last_window_start records the start position that this buffer | |
1090 | had in the last window to be disconnected from it. | |
1091 | Now that this statement is unconditional, | |
1092 | it is possible for the buffer to be displayed in the | |
1093 | selected window, while last_window_start reflects another | |
1094 | window which was recently showing the same buffer. | |
1095 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1096 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1097 | |
1098 | /* Point in the selected window's buffer | |
1099 | is actually stored in that buffer, and the window's pointm isn't used. | |
1100 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1101 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1102 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1103 | && !(WINDOWP (b->last_selected_window) |
1104 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1105 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1106 | temp_set_point_both (b, |
1107 | clip_to_bounds (BUF_BEGV (b), | |
1108 | XMARKER (w->pointm)->charpos, | |
1109 | BUF_ZV (b)), | |
1110 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1111 | marker_byte_position (w->pointm), | |
1112 | BUF_ZV_BYTE (b))); | |
719eaeb1 | 1113 | |
8801a864 KR |
1114 | if (WINDOWP (b->last_selected_window) |
1115 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1116 | b->last_selected_window = Qnil; |
7ab12479 JB |
1117 | } |
1118 | ||
1119 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1120 | static void |
7ab12479 JB |
1121 | replace_window (old, replacement) |
1122 | Lisp_Object old, replacement; | |
1123 | { | |
1124 | register Lisp_Object tem; | |
1125 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1126 | ||
44fa5b1e JB |
1127 | /* If OLD is its frame's root_window, then replacement is the new |
1128 | root_window for that frame. */ | |
7ab12479 | 1129 | |
7f4161e0 | 1130 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1131 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
1132 | |
1133 | p->left = o->left; | |
1134 | p->top = o->top; | |
1135 | p->width = o->width; | |
1136 | p->height = o->height; | |
5500c422 GM |
1137 | p->desired_matrix = p->current_matrix = 0; |
1138 | p->vscroll = 0; | |
1139 | bzero (&p->cursor, sizeof (p->cursor)); | |
1140 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1141 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1142 | p->phys_cursor_type = -1; | |
1143 | p->must_be_updated_p = 0; | |
1144 | p->pseudo_window_p = 0; | |
1145 | XSETFASTINT (p->window_end_vpos, 0); | |
1146 | XSETFASTINT (p->window_end_pos, 0); | |
1147 | p->window_end_valid = Qnil; | |
7bbb5782 | 1148 | p->frozen_window_start_p = 0; |
f984d4fc | 1149 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
1150 | |
1151 | p->next = tem = o->next; | |
265a9e55 | 1152 | if (!NILP (tem)) |
7ab12479 JB |
1153 | XWINDOW (tem)->prev = replacement; |
1154 | ||
1155 | p->prev = tem = o->prev; | |
265a9e55 | 1156 | if (!NILP (tem)) |
7ab12479 JB |
1157 | XWINDOW (tem)->next = replacement; |
1158 | ||
1159 | p->parent = tem = o->parent; | |
265a9e55 | 1160 | if (!NILP (tem)) |
7ab12479 JB |
1161 | { |
1162 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1163 | XWINDOW (tem)->vchild = replacement; | |
1164 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1165 | XWINDOW (tem)->hchild = replacement; | |
1166 | } | |
1167 | ||
1168 | /*** Here, if replacement is a vertical combination | |
1169 | and so is its new parent, we should make replacement's | |
1170 | children be children of that parent instead. ***/ | |
1171 | } | |
1172 | ||
1173 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1174 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1175 | (window) | |
7ab12479 | 1176 | register Lisp_Object window; |
543f5fb1 RS |
1177 | { |
1178 | delete_window (window); | |
1179 | ||
1180 | if (! NILP (Vwindow_configuration_change_hook) | |
1181 | && ! NILP (Vrun_hooks)) | |
1182 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1183 | ||
1184 | return Qnil; | |
1185 | } | |
1186 | ||
5e14b1fc | 1187 | void |
543f5fb1 RS |
1188 | delete_window (window) |
1189 | register Lisp_Object window; | |
7ab12479 JB |
1190 | { |
1191 | register Lisp_Object tem, parent, sib; | |
1192 | register struct window *p; | |
1193 | register struct window *par; | |
951f9df5 | 1194 | struct frame *f; |
7ab12479 | 1195 | |
605be8af JB |
1196 | /* Because this function is called by other C code on non-leaf |
1197 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1198 | so we can't decode_window here. */ | |
265a9e55 | 1199 | if (NILP (window)) |
7ab12479 JB |
1200 | window = selected_window; |
1201 | else | |
1202 | CHECK_WINDOW (window, 0); | |
7ab12479 | 1203 | p = XWINDOW (window); |
605be8af JB |
1204 | |
1205 | /* It's okay to delete an already-deleted window. */ | |
1206 | if (NILP (p->buffer) | |
1207 | && NILP (p->hchild) | |
1208 | && NILP (p->vchild)) | |
296b535c | 1209 | return; |
605be8af | 1210 | |
7ab12479 | 1211 | parent = p->parent; |
265a9e55 | 1212 | if (NILP (parent)) |
7ab12479 JB |
1213 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1214 | par = XWINDOW (parent); | |
1215 | ||
1216 | windows_or_buffers_changed++; | |
67492200 | 1217 | Vwindow_list = Qnil; |
951f9df5 GM |
1218 | f = XFRAME (WINDOW_FRAME (p)); |
1219 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1220 | |
605be8af JB |
1221 | /* Are we trying to delete any frame's selected window? */ |
1222 | { | |
951f9df5 | 1223 | Lisp_Object pwindow; |
605be8af | 1224 | |
0def0403 RS |
1225 | /* See if the frame's selected window is either WINDOW |
1226 | or any subwindow of it, by finding all that window's parents | |
1227 | and comparing each one with WINDOW. */ | |
951f9df5 | 1228 | pwindow = FRAME_SELECTED_WINDOW (f); |
0def0403 RS |
1229 | |
1230 | while (!NILP (pwindow)) | |
1231 | { | |
1232 | if (EQ (window, pwindow)) | |
1233 | break; | |
1234 | pwindow = XWINDOW (pwindow)->parent; | |
1235 | } | |
1236 | ||
1237 | if (EQ (window, pwindow)) | |
605be8af | 1238 | { |
89bca612 RS |
1239 | Lisp_Object alternative; |
1240 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
1241 | |
1242 | /* If we're about to delete the selected window on the | |
1243 | selected frame, then we should use Fselect_window to select | |
1244 | the new window. On the other hand, if we're about to | |
1245 | delete the selected window on any other frame, we shouldn't do | |
1246 | anything but set the frame's selected_window slot. */ | |
1247 | if (EQ (window, selected_window)) | |
1248 | Fselect_window (alternative); | |
1249 | else | |
951f9df5 | 1250 | FRAME_SELECTED_WINDOW (f) = alternative; |
605be8af JB |
1251 | } |
1252 | } | |
7ab12479 JB |
1253 | |
1254 | tem = p->buffer; | |
1255 | /* tem is null for dummy parent windows | |
1256 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1257 | if (!NILP (tem)) |
7ab12479 JB |
1258 | { |
1259 | unshow_buffer (p); | |
1260 | unchain_marker (p->pointm); | |
1261 | unchain_marker (p->start); | |
7ab12479 JB |
1262 | } |
1263 | ||
05e71564 GM |
1264 | /* Free window glyph matrices. It is sure that they are allocated |
1265 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1266 | events and other events that access glyph matrices are not | |
1267 | processed while we are changing them. */ | |
1268 | BLOCK_INPUT; | |
951f9df5 | 1269 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1270 | |
7ab12479 | 1271 | tem = p->next; |
265a9e55 | 1272 | if (!NILP (tem)) |
7ab12479 JB |
1273 | XWINDOW (tem)->prev = p->prev; |
1274 | ||
1275 | tem = p->prev; | |
265a9e55 | 1276 | if (!NILP (tem)) |
7ab12479 JB |
1277 | XWINDOW (tem)->next = p->next; |
1278 | ||
1279 | if (EQ (window, par->hchild)) | |
1280 | par->hchild = p->next; | |
1281 | if (EQ (window, par->vchild)) | |
1282 | par->vchild = p->next; | |
1283 | ||
1284 | /* Find one of our siblings to give our space to. */ | |
1285 | sib = p->prev; | |
265a9e55 | 1286 | if (NILP (sib)) |
7ab12479 JB |
1287 | { |
1288 | /* If p gives its space to its next sibling, that sibling needs | |
1289 | to have its top/left side pulled back to where p's is. | |
1290 | set_window_{height,width} will re-position the sibling's | |
1291 | children. */ | |
1292 | sib = p->next; | |
7f4161e0 JB |
1293 | XWINDOW (sib)->top = p->top; |
1294 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1295 | } |
1296 | ||
1297 | /* Stretch that sibling. */ | |
265a9e55 | 1298 | if (!NILP (par->vchild)) |
7ab12479 JB |
1299 | set_window_height (sib, |
1300 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1301 | 1); | |
265a9e55 | 1302 | if (!NILP (par->hchild)) |
7ab12479 JB |
1303 | set_window_width (sib, |
1304 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1305 | 1); | |
1306 | ||
1307 | /* If parent now has only one child, | |
1308 | put the child into the parent's place. */ | |
7ab12479 | 1309 | tem = par->hchild; |
265a9e55 | 1310 | if (NILP (tem)) |
7ab12479 | 1311 | tem = par->vchild; |
265a9e55 | 1312 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1313 | replace_window (parent, tem); |
605be8af JB |
1314 | |
1315 | /* Since we may be deleting combination windows, we must make sure that | |
1316 | not only p but all its children have been marked as deleted. */ | |
1317 | if (! NILP (p->hchild)) | |
1318 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1319 | else if (! NILP (p->vchild)) | |
1320 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1321 | ||
1322 | /* Mark this window as deleted. */ | |
1323 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1324 | |
1325 | /* Adjust glyph matrices. */ | |
951f9df5 | 1326 | adjust_glyphs (f); |
05e71564 | 1327 | UNBLOCK_INPUT; |
7ab12479 | 1328 | } |
67492200 GM |
1329 | |
1330 | ||
7ab12479 | 1331 | \f |
67492200 GM |
1332 | /*********************************************************************** |
1333 | Window List | |
1334 | ***********************************************************************/ | |
1335 | ||
f95464e4 GM |
1336 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1337 | pointer. This is a callback function for foreach_window, used in | |
1338 | function window_list. */ | |
67492200 GM |
1339 | |
1340 | static int | |
f95464e4 | 1341 | add_window_to_list (w, user_data) |
67492200 | 1342 | struct window *w; |
f95464e4 | 1343 | void *user_data; |
67492200 | 1344 | { |
f95464e4 | 1345 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1346 | Lisp_Object window; |
1347 | XSETWINDOW (window, w); | |
212116d6 | 1348 | *list = Fcons (window, *list); |
67492200 GM |
1349 | return 1; |
1350 | } | |
1351 | ||
1352 | ||
1353 | /* Return a list of all windows, for use by next_window. If | |
1354 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1355 | list, cache it in Vwindow_list, and return that. */ | |
1356 | ||
1357 | static Lisp_Object | |
1358 | window_list () | |
1359 | { | |
1360 | if (!CONSP (Vwindow_list)) | |
1361 | { | |
1362 | Lisp_Object tail; | |
212116d6 | 1363 | |
67492200 GM |
1364 | Vwindow_list = Qnil; |
1365 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1366 | { |
1367 | Lisp_Object args[2]; | |
1368 | ||
1369 | /* We are visiting windows in canonical order, and add | |
1370 | new windows at the front of args[1], which means we | |
1371 | have to reverse this list at the end. */ | |
1372 | args[1] = Qnil; | |
1373 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1374 | args[0] = Vwindow_list; | |
1375 | args[1] = Fnreverse (args[1]); | |
1376 | Vwindow_list = Fnconc (2, args); | |
1377 | } | |
67492200 GM |
1378 | } |
1379 | ||
1380 | return Vwindow_list; | |
1381 | } | |
1382 | ||
1383 | ||
118ea242 GM |
1384 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1385 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1386 | |
118ea242 GM |
1387 | MINIBUF t means WINDOW may be minibuffer windows. |
1388 | `lambda' means WINDOW may not be a minibuffer window. | |
1389 | a window means a specific minibuffer window | |
67492200 | 1390 | |
118ea242 GM |
1391 | ALL_FRAMES t means search all frames, |
1392 | nil means search just current frame, | |
1393 | `visible' means search just visible frames, | |
1394 | 0 means search visible and iconified frames, | |
1395 | a window means search the frame that window belongs to, | |
1396 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1397 | |
1398 | static int | |
118ea242 GM |
1399 | candidate_window_p (window, owindow, minibuf, all_frames) |
1400 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1401 | { |
1402 | struct window *w = XWINDOW (window); | |
1403 | struct frame *f = XFRAME (w->frame); | |
1404 | int candidate_p = 1; | |
1405 | ||
1406 | if (!BUFFERP (w->buffer)) | |
1407 | candidate_p = 0; | |
1408 | else if (MINI_WINDOW_P (w) | |
1409 | && (EQ (minibuf, Qlambda) | |
1410 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1411 | { | |
1412 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1413 | If it is a window, consider only that one. */ | |
1414 | candidate_p = 0; | |
1415 | } | |
118ea242 GM |
1416 | else if (EQ (all_frames, Qt)) |
1417 | candidate_p = 1; | |
67492200 | 1418 | else if (NILP (all_frames)) |
118ea242 GM |
1419 | { |
1420 | xassert (WINDOWP (owindow)); | |
1421 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1422 | } | |
67492200 GM |
1423 | else if (EQ (all_frames, Qvisible)) |
1424 | { | |
1425 | FRAME_SAMPLE_VISIBILITY (f); | |
1426 | candidate_p = FRAME_VISIBLE_P (f); | |
1427 | } | |
1428 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1429 | { | |
1430 | FRAME_SAMPLE_VISIBILITY (f); | |
1431 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1432 | } | |
67492200 GM |
1433 | else if (WINDOWP (all_frames)) |
1434 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1435 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1436 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1437 | else if (FRAMEP (all_frames)) |
1438 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1439 | |
1440 | return candidate_p; | |
1441 | } | |
1442 | ||
1443 | ||
1444 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1445 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1446 | ALL_FRAMES. */ | |
1447 | ||
1448 | static void | |
1449 | decode_next_window_args (window, minibuf, all_frames) | |
1450 | Lisp_Object *window, *minibuf, *all_frames; | |
1451 | { | |
1452 | if (NILP (*window)) | |
1453 | *window = selected_window; | |
1454 | else | |
1455 | CHECK_LIVE_WINDOW (*window, 0); | |
1456 | ||
1457 | /* MINIBUF nil may or may not include minibuffers. Decide if it | |
1458 | does. */ | |
1459 | if (NILP (*minibuf)) | |
1460 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1461 | else if (!EQ (*minibuf, Qt)) | |
1462 | *minibuf = Qlambda; | |
1463 | ||
1464 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' | |
1465 | => count none of them, or a specific minibuffer window (the | |
1466 | active one) to count. */ | |
1467 | ||
1468 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1469 | if (NILP (*all_frames)) | |
1470 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1471 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1472 | : Qnil); | |
1473 | else if (EQ (*all_frames, Qvisible)) | |
1474 | ; | |
1475 | else if (XFASTINT (*all_frames) == 0) | |
1476 | ; | |
1477 | else if (FRAMEP (*all_frames)) | |
1478 | ; | |
1479 | else if (!EQ (*all_frames, Qt)) | |
1480 | *all_frames = Qnil; | |
1481 | ||
1482 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning | |
1483 | search just current frame, `visible' meaning search just visible | |
1484 | frames, 0 meaning search visible and iconified frames, or a | |
1485 | window, meaning search the frame that window belongs to, or a | |
1486 | frame, meaning consider windows on that frame, only. */ | |
1487 | } | |
1488 | ||
1489 | ||
1490 | /* Return the next or previous window of WINDOW in canonical ordering | |
1491 | of windows. NEXT_P non-zero means return the next window. See the | |
1492 | documentation string of next-window for the meaning of MINIBUF and | |
1493 | ALL_FRAMES. */ | |
1494 | ||
1495 | static Lisp_Object | |
1496 | next_window (window, minibuf, all_frames, next_p) | |
1497 | Lisp_Object window, minibuf, all_frames; | |
1498 | int next_p; | |
1499 | { | |
1500 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1501 | ||
1502 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just | |
1503 | return the first window on the frame. */ | |
1504 | if (FRAMEP (all_frames) | |
1505 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1506 | return Fframe_first_window (all_frames); | |
1507 | ||
212116d6 | 1508 | if (next_p) |
67492200 GM |
1509 | { |
1510 | Lisp_Object list; | |
1511 | ||
1512 | /* Find WINDOW in the list of all windows. */ | |
1513 | list = Fmemq (window, window_list ()); | |
1514 | ||
1515 | /* Scan forward from WINDOW to the end of the window list. */ | |
1516 | if (CONSP (list)) | |
1517 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1518 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1519 | break; |
1520 | ||
1521 | /* Scan from the start of the window list up to WINDOW. */ | |
1522 | if (!CONSP (list)) | |
1523 | for (list = Vwindow_list; | |
1524 | CONSP (list) && !EQ (XCAR (list), window); | |
1525 | list = XCDR (list)) | |
118ea242 | 1526 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1527 | break; |
1528 | ||
1529 | if (CONSP (list)) | |
1530 | window = XCAR (list); | |
1531 | } | |
1532 | else | |
1533 | { | |
1534 | Lisp_Object candidate, list; | |
1535 | ||
1536 | /* Scan through the list of windows for candidates. If there are | |
1537 | candidate windows in front of WINDOW, the last one of these | |
1538 | is the one we want. If there are candidates following WINDOW | |
1539 | in the list, again the last one of these is the one we want. */ | |
1540 | candidate = Qnil; | |
1541 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1542 | { | |
1543 | if (EQ (XCAR (list), window)) | |
1544 | { | |
1545 | if (WINDOWP (candidate)) | |
1546 | break; | |
1547 | } | |
118ea242 GM |
1548 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1549 | all_frames)) | |
67492200 GM |
1550 | candidate = XCAR (list); |
1551 | } | |
1552 | ||
1553 | if (WINDOWP (candidate)) | |
1554 | window = candidate; | |
1555 | } | |
1556 | ||
1557 | return window; | |
1558 | } | |
7ab12479 | 1559 | |
7ab12479 | 1560 | |
26f6279d | 1561 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1562 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1563 | If omitted, WINDOW defaults to the selected window. | |
1564 | ||
1565 | Optional second arg MINIBUF t means count the minibuffer window even | |
1566 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1567 | it is active. MINIBUF neither t nor nil means not to count the | |
1568 | minibuffer even if it is active. | |
1569 | ||
1570 | Several frames may share a single minibuffer; if the minibuffer | |
1571 | counts, all windows on all frames that share that minibuffer count | |
1572 | too. Therefore, `next-window' can be used to iterate through the | |
1573 | set of windows even when the minibuffer is on another frame. If the | |
1574 | minibuffer does not count, only windows from WINDOW's frame count. | |
1575 | ||
1576 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1577 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1578 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1579 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1580 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1581 | Anything else means restrict to WINDOW's frame. | |
1582 | ||
1583 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1584 | `next-window' to iterate through the entire cycle of acceptable | |
1585 | windows, eventually ending up back at the window you started with. | |
1586 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1587 | (window, minibuf, all_frames) | |
67492200 | 1588 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1589 | { |
67492200 | 1590 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1591 | } |
1592 | ||
67492200 | 1593 | |
26f6279d | 1594 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1595 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1596 | If omitted, WINDOW defaults to the selected window. | |
1597 | ||
1598 | Optional second arg MINIBUF t means count the minibuffer window even | |
1599 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1600 | it is active. MINIBUF neither t nor nil means not to count the | |
1601 | minibuffer even if it is active. | |
1602 | ||
1603 | Several frames may share a single minibuffer; if the minibuffer | |
1604 | counts, all windows on all frames that share that minibuffer count | |
1605 | too. Therefore, `previous-window' can be used to iterate through | |
1606 | the set of windows even when the minibuffer is on another frame. If | |
1607 | the minibuffer does not count, only windows from WINDOW's frame count | |
1608 | ||
1609 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1610 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1611 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1612 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1613 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1614 | Anything else means restrict to WINDOW's frame. | |
1615 | ||
1616 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1617 | `previous-window' to iterate through the entire cycle of acceptable | |
1618 | windows, eventually ending up back at the window you started with. | |
1619 | `next-window' traverses the same cycle, in the reverse order. */) | |
1620 | (window, minibuf, all_frames) | |
67492200 | 1621 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1622 | { |
67492200 | 1623 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1624 | } |
1625 | ||
67492200 | 1626 | |
62c07cc7 | 1627 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1628 | doc: /* Select the ARG'th different window on this frame. |
1629 | All windows on current frame are arranged in a cyclic order. | |
1630 | This command selects the window ARG steps away in that order. | |
1631 | A negative ARG moves in the opposite order. If the optional second | |
1632 | argument ALL_FRAMES is non-nil, cycle through all frames. */) | |
1633 | (arg, all_frames) | |
67492200 | 1634 | Lisp_Object arg, all_frames; |
7ab12479 | 1635 | { |
67492200 GM |
1636 | Lisp_Object window; |
1637 | int i; | |
7ab12479 | 1638 | |
413430c5 | 1639 | CHECK_NUMBER (arg, 0); |
67492200 GM |
1640 | window = selected_window; |
1641 | ||
1642 | for (i = XINT (arg); i > 0; --i) | |
1643 | window = Fnext_window (window, Qnil, all_frames); | |
1644 | for (; i < 0; ++i) | |
1645 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1646 | |
67492200 | 1647 | Fselect_window (window); |
7ab12479 JB |
1648 | return Qnil; |
1649 | } | |
67492200 GM |
1650 | |
1651 | ||
1652 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1653 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1654 | FRAME nil or omitted means use the selected frame. | |
1655 | WINDOW nil or omitted means use the selected window. | |
1656 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1657 | MINIBUF nil or omitted means include the minibuffer window only | |
1658 | if it's active. | |
1659 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1660 | (frame, minibuf, window) | |
cd2904bd GM |
1661 | Lisp_Object frame, minibuf, window; |
1662 | { | |
cd2904bd GM |
1663 | if (NILP (window)) |
1664 | window = selected_window; | |
1665 | if (NILP (frame)) | |
1666 | frame = selected_frame; | |
1667 | ||
1668 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1669 | error ("Window is on a different frame"); | |
1670 | ||
1671 | return window_list_1 (window, minibuf, frame); | |
1672 | } | |
1673 | ||
1674 | ||
1675 | /* Return a list of windows in canonical ordering. Arguments are like | |
1676 | for `next-window'. */ | |
1677 | ||
1678 | static Lisp_Object | |
1679 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1680 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1681 | { |
1682 | Lisp_Object tail, list; | |
1683 | ||
1684 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1685 | list = Qnil; | |
1686 | ||
1687 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
118ea242 | 1688 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 GM |
1689 | list = Fcons (XCAR (tail), list); |
1690 | ||
118ea242 | 1691 | return Fnreverse (list); |
67492200 GM |
1692 | } |
1693 | ||
1694 | ||
7ab12479 JB |
1695 | \f |
1696 | /* Look at all windows, performing an operation specified by TYPE | |
1697 | with argument OBJ. | |
75d8f668 | 1698 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1699 | Qnil, look at just the selected frame; |
89bca612 | 1700 | Qvisible, look at visible frames; |
75d8f668 | 1701 | a frame, just look at windows on that frame. |
85fe3b5e | 1702 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1703 | |
1704 | enum window_loop | |
1705 | { | |
1706 | WINDOW_LOOP_UNUSED, | |
1707 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1708 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1709 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1710 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1711 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1712 | UNSHOW_BUFFER, /* Arg is buffer */ |
1713 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1714 | }; |
1715 | ||
1716 | static Lisp_Object | |
44fa5b1e | 1717 | window_loop (type, obj, mini, frames) |
7ab12479 | 1718 | enum window_loop type; |
118ea242 | 1719 | Lisp_Object obj, frames; |
7ab12479 JB |
1720 | int mini; |
1721 | { | |
118ea242 GM |
1722 | Lisp_Object window, windows, best_window, frame_arg; |
1723 | struct frame *f; | |
ffdc852d | 1724 | struct gcpro gcpro1; |
118ea242 | 1725 | |
44fa5b1e JB |
1726 | /* If we're only looping through windows on a particular frame, |
1727 | frame points to that frame. If we're looping through windows | |
1728 | on all frames, frame is 0. */ | |
1729 | if (FRAMEP (frames)) | |
118ea242 | 1730 | f = XFRAME (frames); |
44fa5b1e | 1731 | else if (NILP (frames)) |
118ea242 | 1732 | f = SELECTED_FRAME (); |
7ab12479 | 1733 | else |
118ea242 GM |
1734 | f = NULL; |
1735 | ||
1736 | if (f) | |
89bca612 | 1737 | frame_arg = Qlambda; |
f812f9c6 RS |
1738 | else if (XFASTINT (frames) == 0) |
1739 | frame_arg = frames; | |
89bca612 RS |
1740 | else if (EQ (frames, Qvisible)) |
1741 | frame_arg = frames; | |
118ea242 GM |
1742 | else |
1743 | frame_arg = Qt; | |
7ab12479 | 1744 | |
89bca612 RS |
1745 | /* frame_arg is Qlambda to stick to one frame, |
1746 | Qvisible to consider all visible frames, | |
1747 | or Qt otherwise. */ | |
1748 | ||
7ab12479 | 1749 | /* Pick a window to start with. */ |
017b2bad | 1750 | if (WINDOWP (obj)) |
118ea242 GM |
1751 | window = obj; |
1752 | else if (f) | |
1753 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1754 | else |
118ea242 | 1755 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1756 | |
cd2904bd | 1757 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1758 | GCPRO1 (windows); |
7ab12479 | 1759 | best_window = Qnil; |
118ea242 GM |
1760 | |
1761 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1762 | { |
118ea242 GM |
1763 | struct window *w; |
1764 | ||
1765 | window = XCAR (windows); | |
1766 | w = XWINDOW (window); | |
1767 | ||
1768 | /* Note that we do not pay attention here to whether the frame | |
1769 | is visible, since Fwindow_list skips non-visible frames if | |
1770 | that is desired, under the control of frame_arg. */ | |
1771 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1772 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1773 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1774 | || (mini && minibuf_level > 0)) |
1775 | switch (type) | |
1776 | { | |
1777 | case GET_BUFFER_WINDOW: | |
118ea242 | 1778 | if (EQ (w->buffer, obj) |
5c204627 RS |
1779 | /* Don't find any minibuffer window |
1780 | except the one that is currently in use. */ | |
118ea242 GM |
1781 | && (MINI_WINDOW_P (w) |
1782 | ? EQ (window, minibuf_window) | |
1783 | : 1)) | |
1784 | { | |
5ddc1b75 GM |
1785 | if (NILP (best_window)) |
1786 | best_window = window; | |
1787 | else if (EQ (window, selected_window)) | |
1788 | /* For compatibility with 20.x, prefer to return | |
1789 | selected-window. */ | |
1790 | best_window = window; | |
118ea242 | 1791 | } |
7ab12479 JB |
1792 | break; |
1793 | ||
1794 | case GET_LRU_WINDOW: | |
1795 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1796 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1797 | break; |
7ab12479 | 1798 | /* Ignore dedicated windows and minibuffers. */ |
118ea242 | 1799 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
7ab12479 | 1800 | break; |
265a9e55 | 1801 | if (NILP (best_window) |
7ab12479 | 1802 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1803 | > XFASTINT (w->use_time))) |
1804 | best_window = window; | |
7ab12479 JB |
1805 | break; |
1806 | ||
1807 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1808 | if (!EQ (window, obj)) |
1809 | Fdelete_window (window); | |
7ab12479 JB |
1810 | break; |
1811 | ||
1812 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1813 | if (EQ (w->buffer, obj)) |
7ab12479 | 1814 | { |
118ea242 | 1815 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1816 | |
1817 | /* If this window is dedicated, and in a frame of its own, | |
1818 | kill the frame. */ | |
118ea242 GM |
1819 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1820 | && !NILP (w->dedicated) | |
3548e138 | 1821 | && other_visible_frames (f)) |
7ab12479 | 1822 | { |
3548e138 RS |
1823 | /* Skip the other windows on this frame. |
1824 | There might be one, the minibuffer! */ | |
118ea242 GM |
1825 | while (CONSP (XCDR (windows)) |
1826 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1827 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1828 | windows = XCDR (windows); | |
1829 | ||
3548e138 | 1830 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1831 | Fdelete_frame (w->frame, Qnil); |
1832 | } | |
1833 | else if (NILP (w->parent)) | |
1834 | { | |
1835 | /* If we're deleting the buffer displayed in the | |
1836 | only window on the frame, find a new buffer to | |
1837 | display there. */ | |
1838 | Lisp_Object buffer; | |
1839 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
118ea242 GM |
1840 | Fset_window_buffer (window, buffer); |
1841 | if (EQ (window, selected_window)) | |
1842 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1843 | } |
1844 | else | |
118ea242 | 1845 | Fdelete_window (window); |
7ab12479 JB |
1846 | } |
1847 | break; | |
1848 | ||
1849 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1850 | { |
118ea242 | 1851 | /* Ignore dedicated windows and minibuffers. */ |
c930dfab | 1852 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
118ea242 GM |
1853 | break; |
1854 | ||
c930dfab | 1855 | if (NILP (best_window)) |
118ea242 | 1856 | best_window = window; |
c930dfab GM |
1857 | else |
1858 | { | |
1859 | struct window *b = XWINDOW (best_window); | |
1860 | if (XFASTINT (w->height) * XFASTINT (w->width) | |
1861 | > XFASTINT (b->height) * XFASTINT (b->width)) | |
1862 | best_window = window; | |
1863 | } | |
7ab12479 JB |
1864 | } |
1865 | break; | |
1866 | ||
1867 | case UNSHOW_BUFFER: | |
118ea242 | 1868 | if (EQ (w->buffer, obj)) |
7ab12479 | 1869 | { |
118ea242 GM |
1870 | Lisp_Object buffer; |
1871 | struct frame *f = XFRAME (w->frame); | |
1872 | ||
7ab12479 | 1873 | /* Find another buffer to show in this window. */ |
118ea242 | 1874 | buffer = Fother_buffer (obj, Qnil, w->frame); |
118ea242 | 1875 | |
38ab08d1 RS |
1876 | /* If this window is dedicated, and in a frame of its own, |
1877 | kill the frame. */ | |
118ea242 GM |
1878 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1879 | && !NILP (w->dedicated) | |
38ab08d1 | 1880 | && other_visible_frames (f)) |
45945a7b RS |
1881 | { |
1882 | /* Skip the other windows on this frame. | |
1883 | There might be one, the minibuffer! */ | |
118ea242 GM |
1884 | while (CONSP (XCDR (windows)) |
1885 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1886 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1887 | windows = XCDR (windows); | |
1888 | ||
45945a7b | 1889 | /* Now we can safely delete the frame. */ |
118ea242 | 1890 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1891 | } |
38ab08d1 | 1892 | else |
38ab08d1 RS |
1893 | { |
1894 | /* Otherwise show a different buffer in the window. */ | |
118ea242 GM |
1895 | w->dedicated = Qnil; |
1896 | Fset_window_buffer (window, buffer); | |
1897 | if (EQ (window, selected_window)) | |
1898 | Fset_buffer (w->buffer); | |
38ab08d1 | 1899 | } |
7ab12479 JB |
1900 | } |
1901 | break; | |
3f8ab7bd RS |
1902 | |
1903 | /* Check for a window that has a killed buffer. */ | |
1904 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1905 | if (! NILP (w->buffer) |
1906 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1907 | abort (); |
118ea242 | 1908 | break; |
6bbd7a29 GM |
1909 | |
1910 | case WINDOW_LOOP_UNUSED: | |
1911 | break; | |
7ab12479 | 1912 | } |
7ab12479 | 1913 | } |
7ab12479 | 1914 | |
118ea242 | 1915 | UNGCPRO; |
7ab12479 | 1916 | return best_window; |
37962e60 | 1917 | } |
605be8af | 1918 | |
3f8ab7bd RS |
1919 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1920 | ||
233a4a2c | 1921 | void |
3f8ab7bd RS |
1922 | check_all_windows () |
1923 | { | |
1924 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1925 | } | |
1926 | ||
7ab12479 | 1927 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
fdb82f93 PJ |
1928 | doc: /* Return the window least recently selected or used for display. |
1929 | If optional argument FRAME is `visible', search all visible frames. | |
1930 | If FRAME is 0, search all visible and iconified frames. | |
1931 | If FRAME is t, search all frames. | |
1932 | If FRAME is nil, search only the selected frame. | |
1933 | If FRAME is a frame, search only that frame. */) | |
1934 | (frame) | |
1935 | Lisp_Object frame; | |
7ab12479 JB |
1936 | { |
1937 | register Lisp_Object w; | |
1938 | /* First try for a window that is full-width */ | |
89bca612 | 1939 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1940 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1941 | return w; |
1942 | /* If none of them, try the rest */ | |
89bca612 | 1943 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1944 | } |
1945 | ||
1946 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
fdb82f93 PJ |
1947 | doc: /* Return the largest window in area. |
1948 | If optional argument FRAME is `visible', search all visible frames. | |
1949 | If FRAME is 0, search all visible and iconified frames. | |
1950 | If FRAME is t, search all frames. | |
1951 | If FRAME is nil, search only the selected frame. | |
1952 | If FRAME is a frame, search only that frame. */) | |
1953 | (frame) | |
1954 | Lisp_Object frame; | |
7ab12479 JB |
1955 | { |
1956 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1957 | frame); |
7ab12479 JB |
1958 | } |
1959 | ||
1960 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 PJ |
1961 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
1962 | If optional argument FRAME is `visible', search all visible frames. | |
1963 | If optional argument FRAME is 0, search all visible and iconified frames. | |
1964 | If FRAME is t, search all frames. | |
1965 | If FRAME is nil, search only the selected frame. | |
1966 | If FRAME is a frame, search only that frame. */) | |
1967 | (buffer, frame) | |
1968 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1969 | { |
1970 | buffer = Fget_buffer (buffer); | |
017b2bad | 1971 | if (BUFFERP (buffer)) |
44fa5b1e | 1972 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1973 | else |
1974 | return Qnil; | |
1975 | } | |
1976 | ||
1977 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
1978 | 0, 1, "", |
1979 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
1980 | Only the frame WINDOW is on is affected. | |
1981 | This function tries to reduce display jumps | |
1982 | by keeping the text previously visible in WINDOW | |
1983 | in the same place on the frame. Doing this depends on | |
1984 | the value of (window-start WINDOW), so if calling this function | |
1985 | in a program gives strange scrolling, make sure the window-start | |
1986 | value is reasonable when this function is called. */) | |
1987 | (window) | |
7ab12479 JB |
1988 | Lisp_Object window; |
1989 | { | |
1990 | struct window *w; | |
00d3d838 | 1991 | int startpos; |
85fe3b5e | 1992 | int top, new_top; |
7ab12479 | 1993 | |
265a9e55 | 1994 | if (NILP (window)) |
7ab12479 JB |
1995 | window = selected_window; |
1996 | else | |
605be8af | 1997 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1998 | w = XWINDOW (window); |
a2b38b3c | 1999 | |
00d3d838 | 2000 | startpos = marker_position (w->start); |
5500c422 | 2001 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2002 | |
a2b38b3c RS |
2003 | if (MINI_WINDOW_P (w) && top > 0) |
2004 | error ("Can't expand minibuffer to full frame"); | |
2005 | ||
70728a80 | 2006 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2007 | |
00d3d838 KH |
2008 | /* Try to minimize scrolling, by setting the window start to the point |
2009 | will cause the text at the old window start to be at the same place | |
2010 | on the frame. But don't try to do this if the window start is | |
2011 | outside the visible portion (as might happen when the display is | |
2012 | not current, due to typeahead). */ | |
85fe3b5e GM |
2013 | new_top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
2014 | if (new_top != top | |
2015 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2016 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2017 | { | |
2018 | struct position pos; | |
2019 | struct buffer *obuf = current_buffer; | |
2020 | ||
2021 | Fset_buffer (w->buffer); | |
2022 | /* This computation used to temporarily move point, but that can | |
2023 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2024 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2025 | |
b73ea88e | 2026 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2027 | w->window_end_valid = Qnil; |
b73ea88e RS |
2028 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2029 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2030 | : Qnil); |
80622eec RS |
2031 | /* We need to do this, so that the window-scroll-functions |
2032 | get called. */ | |
4d047f50 | 2033 | w->optional_new_start = Qt; |
00d3d838 KH |
2034 | |
2035 | set_buffer_internal (obuf); | |
2036 | } | |
5500c422 | 2037 | |
7ab12479 JB |
2038 | return Qnil; |
2039 | } | |
2040 | ||
2041 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2042 | 1, 2, "bDelete windows on (buffer): ", |
2043 | doc: /* Delete all windows showing BUFFER. | |
2044 | Optional second argument FRAME controls which frames are affected. | |
2045 | If optional argument FRAME is `visible', search all visible frames. | |
2046 | If FRAME is 0, search all visible and iconified frames. | |
2047 | If FRAME is nil, search all frames. | |
2048 | If FRAME is t, search only the selected frame. | |
2049 | If FRAME is a frame, search only that frame. */) | |
2050 | (buffer, frame) | |
26f6279d | 2051 | Lisp_Object buffer, frame; |
7ab12479 | 2052 | { |
26f6279d JB |
2053 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2054 | expects. */ | |
c520265e RS |
2055 | if (NILP (frame)) |
2056 | frame = Qt; | |
2057 | else if (EQ (frame, Qt)) | |
2058 | frame = Qnil; | |
26f6279d | 2059 | |
265a9e55 | 2060 | if (!NILP (buffer)) |
7ab12479 JB |
2061 | { |
2062 | buffer = Fget_buffer (buffer); | |
2063 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 2064 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2065 | } |
5500c422 | 2066 | |
7ab12479 JB |
2067 | return Qnil; |
2068 | } | |
2069 | ||
2070 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2071 | Sreplace_buffer_in_windows, |
2072 | 1, 1, "bReplace buffer in windows: ", | |
2073 | doc: /* Replace BUFFER with some other buffer in all windows showing it. */) | |
2074 | (buffer) | |
7ab12479 JB |
2075 | Lisp_Object buffer; |
2076 | { | |
265a9e55 | 2077 | if (!NILP (buffer)) |
7ab12479 JB |
2078 | { |
2079 | buffer = Fget_buffer (buffer); | |
2080 | CHECK_BUFFER (buffer, 0); | |
2081 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2082 | } | |
2083 | return Qnil; | |
2084 | } | |
ff58478b RS |
2085 | |
2086 | /* Replace BUFFER with some other buffer in all windows | |
2087 | of all frames, even those on other keyboards. */ | |
2088 | ||
2089 | void | |
2090 | replace_buffer_in_all_windows (buffer) | |
2091 | Lisp_Object buffer; | |
2092 | { | |
27abb84f | 2093 | #ifdef MULTI_KBOARD |
ff58478b RS |
2094 | Lisp_Object tail, frame; |
2095 | ||
ff58478b RS |
2096 | /* A single call to window_loop won't do the job |
2097 | because it only considers frames on the current keyboard. | |
2098 | So loop manually over frames, and handle each one. */ | |
2099 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2100 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2101 | #else |
db7f721d | 2102 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2103 | #endif |
2104 | } | |
7ab12479 JB |
2105 | \f |
2106 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2107 | |
2108 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2109 | might crash Emacs. */ | |
5500c422 | 2110 | |
a481b3ea JB |
2111 | #define MIN_SAFE_WINDOW_WIDTH (2) |
2112 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
2113 | ||
2114 | /* Make sure that window_min_height and window_min_width are | |
2115 | not too small; if they are, set them to safe minima. */ | |
2116 | ||
2117 | static void | |
2118 | check_min_window_sizes () | |
2119 | { | |
2120 | /* Smaller values might permit a crash. */ | |
2121 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2122 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2123 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2124 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2125 | } | |
2126 | ||
2127 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2128 | minimum allowable size. */ | |
5500c422 | 2129 | |
605be8af | 2130 | void |
a481b3ea | 2131 | check_frame_size (frame, rows, cols) |
605be8af JB |
2132 | FRAME_PTR frame; |
2133 | int *rows, *cols; | |
a481b3ea | 2134 | { |
628df3bf | 2135 | /* For height, we have to see: |
37962e60 | 2136 | whether the frame has a minibuffer, |
628df3bf JB |
2137 | whether it wants a mode line, and |
2138 | whether it has a menu bar. */ | |
a481b3ea | 2139 | int min_height = |
79f92720 JB |
2140 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
2141 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 2142 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
2143 | |
2144 | if (FRAME_TOP_MARGIN (frame) > 0) | |
2145 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2146 | |
2147 | if (*rows < min_height) | |
2148 | *rows = min_height; | |
2149 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2150 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2151 | } | |
2152 | ||
c1636aa6 | 2153 | |
233a4a2c GM |
2154 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2155 | check if W's width can be changed, otherwise check W's height. | |
2156 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2157 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2158 | either. */ | |
c1636aa6 | 2159 | |
233a4a2c GM |
2160 | static int |
2161 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2162 | struct window *w; | |
2163 | int width_p, check_siblings_p; | |
2164 | { | |
2165 | int fixed_p; | |
2166 | struct window *c; | |
2167 | ||
2168 | if (!NILP (w->hchild)) | |
2169 | { | |
2170 | c = XWINDOW (w->hchild); | |
2171 | ||
2172 | if (width_p) | |
2173 | { | |
2174 | /* A horiz. combination is fixed-width if all of if its | |
2175 | children are. */ | |
2176 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2177 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2178 | fixed_p = c == NULL; | |
2179 | } | |
2180 | else | |
2181 | { | |
2182 | /* A horiz. combination is fixed-height if one of if its | |
2183 | children is. */ | |
2184 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2185 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2186 | fixed_p = c != NULL; | |
2187 | } | |
2188 | } | |
2189 | else if (!NILP (w->vchild)) | |
2190 | { | |
2191 | c = XWINDOW (w->vchild); | |
2192 | ||
2193 | if (width_p) | |
2194 | { | |
2195 | /* A vert. combination is fixed-width if one of if its | |
2196 | children is. */ | |
2197 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2198 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2199 | fixed_p = c != NULL; | |
2200 | } | |
2201 | else | |
2202 | { | |
2203 | /* A vert. combination is fixed-height if all of if its | |
2204 | children are. */ | |
2205 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2206 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2207 | fixed_p = c == NULL; | |
2208 | } | |
2209 | } | |
2210 | else if (BUFFERP (w->buffer)) | |
2211 | { | |
a34dfd12 GM |
2212 | if (w->height_fixed_p && !width_p) |
2213 | fixed_p = 1; | |
2214 | else | |
233a4a2c | 2215 | { |
a34dfd12 GM |
2216 | struct buffer *old = current_buffer; |
2217 | Lisp_Object val; | |
2218 | ||
2219 | current_buffer = XBUFFER (w->buffer); | |
2220 | val = find_symbol_value (Qwindow_size_fixed); | |
2221 | current_buffer = old; | |
2222 | ||
2223 | fixed_p = 0; | |
2224 | if (!EQ (val, Qunbound)) | |
2225 | { | |
2226 | fixed_p = !NILP (val); | |
2227 | ||
2228 | if (fixed_p | |
2229 | && ((EQ (val, Qheight) && width_p) | |
2230 | || (EQ (val, Qwidth) && !width_p))) | |
2231 | fixed_p = 0; | |
2232 | } | |
233a4a2c GM |
2233 | } |
2234 | ||
2235 | /* Can't tell if this one is resizable without looking at | |
2236 | siblings. If all siblings are fixed-size this one is too. */ | |
2237 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2238 | { | |
2239 | Lisp_Object child; | |
2240 | ||
2241 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2242 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2243 | break; | |
2244 | ||
2245 | if (NILP (child)) | |
2246 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2247 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2248 | break; | |
2249 | ||
2250 | if (NILP (child)) | |
2251 | fixed_p = 1; | |
2252 | } | |
2253 | } | |
2254 | else | |
2255 | fixed_p = 1; | |
2256 | ||
2257 | return fixed_p; | |
2258 | } | |
2259 | ||
2260 | ||
2261 | /* Return the minimum size of window W, not taking fixed-width windows | |
2262 | into account. WIDTH_P non-zero means return the minimum width, | |
2263 | otherwise return the minimum height. If W is a combination window, | |
2264 | compute the minimum size from the minimum sizes of W's children. */ | |
2265 | ||
2266 | static int | |
2267 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2268 | struct window *w; |
2269 | int width_p; | |
2270 | { | |
233a4a2c | 2271 | struct window *c; |
c1636aa6 GM |
2272 | int size; |
2273 | ||
233a4a2c GM |
2274 | if (!NILP (w->hchild)) |
2275 | { | |
2276 | c = XWINDOW (w->hchild); | |
2277 | size = 0; | |
2278 | ||
2279 | if (width_p) | |
2280 | { | |
2281 | /* The min width of a horizontal combination is | |
2282 | the sum of the min widths of its children. */ | |
2283 | while (c) | |
2284 | { | |
2285 | size += window_min_size_1 (c, width_p); | |
2286 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2287 | } | |
2288 | } | |
2289 | else | |
2290 | { | |
2291 | /* The min height a horizontal combination equals | |
2292 | the maximum of all min height of its children. */ | |
2293 | while (c) | |
2294 | { | |
2295 | int min_size = window_min_size_1 (c, width_p); | |
2296 | size = max (min_size, size); | |
2297 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2298 | } | |
2299 | } | |
2300 | } | |
2301 | else if (!NILP (w->vchild)) | |
2302 | { | |
2303 | c = XWINDOW (w->vchild); | |
2304 | size = 0; | |
2305 | ||
2306 | if (width_p) | |
2307 | { | |
2308 | /* The min width of a vertical combination is | |
2309 | the maximum of the min widths of its children. */ | |
2310 | while (c) | |
2311 | { | |
2312 | int min_size = window_min_size_1 (c, width_p); | |
2313 | size = max (min_size, size); | |
2314 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2315 | } | |
2316 | } | |
2317 | else | |
2318 | { | |
2319 | /* The min height of a vertical combination equals | |
2320 | the sum of the min height of its children. */ | |
2321 | while (c) | |
2322 | { | |
2323 | size += window_min_size_1 (c, width_p); | |
2324 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2325 | } | |
2326 | } | |
2327 | } | |
c1636aa6 GM |
2328 | else |
2329 | { | |
233a4a2c GM |
2330 | if (width_p) |
2331 | size = window_min_width; | |
c1636aa6 | 2332 | else |
233a4a2c GM |
2333 | { |
2334 | if (MINI_WINDOW_P (w) | |
2335 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2336 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2337 | size = 1; |
2338 | else | |
2339 | size = window_min_height; | |
2340 | } | |
c1636aa6 GM |
2341 | } |
2342 | ||
2343 | return size; | |
2344 | } | |
2345 | ||
2346 | ||
233a4a2c GM |
2347 | /* Return the minimum size of window W, taking fixed-size windows into |
2348 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2349 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2350 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2351 | unless FIXED is null. */ | |
7ab12479 | 2352 | |
233a4a2c | 2353 | static int |
f984d4fc | 2354 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2355 | struct window *w; |
f984d4fc | 2356 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2357 | { |
2358 | int size, fixed_p; | |
2359 | ||
f984d4fc GM |
2360 | if (ignore_fixed_p) |
2361 | fixed_p = 0; | |
2362 | else | |
2363 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2364 | ||
233a4a2c GM |
2365 | if (fixed) |
2366 | *fixed = fixed_p; | |
2367 | ||
2368 | if (fixed_p) | |
2369 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2370 | else | |
2371 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2372 | |
233a4a2c GM |
2373 | return size; |
2374 | } | |
2375 | ||
2376 | ||
2377 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2378 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2379 | keep their proportionate size relative to WINDOW. Propagate | |
2380 | WINDOW's top or left edge position to children. Delete windows | |
2381 | that become too small unless NODELETE_P is non-zero. */ | |
2382 | ||
2383 | static void | |
2384 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2385 | Lisp_Object window; |
233a4a2c | 2386 | int size, width_p, nodelete_p; |
7ab12479 | 2387 | { |
233a4a2c GM |
2388 | struct window *w = XWINDOW (window); |
2389 | struct window *c; | |
2390 | Lisp_Object child, *forward, *sideward; | |
2391 | int old_size, min_size; | |
7ab12479 | 2392 | |
a481b3ea | 2393 | check_min_window_sizes (); |
7ae2f10f | 2394 | size = max (0, size); |
233a4a2c | 2395 | |
b5f05b50 GM |
2396 | /* If the window has been "too small" at one point, |
2397 | don't delete it for being "too small" in the future. | |
2398 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2399 | if (width_p) |
2400 | { | |
8b6d9dc9 | 2401 | old_size = XINT (w->width); |
233a4a2c GM |
2402 | min_size = window_min_width; |
2403 | } | |
2404 | else | |
2405 | { | |
8b6d9dc9 | 2406 | old_size = XINT (w->height); |
233a4a2c GM |
2407 | min_size = window_min_height; |
2408 | } | |
2409 | ||
f18625cd | 2410 | if (old_size < min_size) |
b5f05b50 GM |
2411 | w->too_small_ok = Qt; |
2412 | ||
233a4a2c GM |
2413 | /* Maybe delete WINDOW if it's too small. */ |
2414 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2415 | { |
b5f05b50 | 2416 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2417 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2418 | else |
233a4a2c | 2419 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2420 | |
233a4a2c | 2421 | if (size < min_size) |
c1636aa6 GM |
2422 | { |
2423 | delete_window (window); | |
2424 | return; | |
2425 | } | |
7ab12479 JB |
2426 | } |
2427 | ||
233a4a2c | 2428 | /* Set redisplay hints. */ |
7ae2f10f GM |
2429 | w->last_modified = make_number (0); |
2430 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2431 | windows_or_buffers_changed++; |
7ae2f10f | 2432 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2433 | |
233a4a2c GM |
2434 | if (width_p) |
2435 | { | |
2436 | sideward = &w->vchild; | |
2437 | forward = &w->hchild; | |
7ae2f10f | 2438 | w->width = make_number (size); |
233a4a2c GM |
2439 | } |
2440 | else | |
2441 | { | |
2442 | sideward = &w->hchild; | |
2443 | forward = &w->vchild; | |
7ae2f10f | 2444 | w->height = make_number (size); |
0130fe1a | 2445 | w->orig_height = Qnil; |
233a4a2c GM |
2446 | } |
2447 | ||
2448 | if (!NILP (*sideward)) | |
7ab12479 | 2449 | { |
233a4a2c | 2450 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2451 | { |
233a4a2c GM |
2452 | c = XWINDOW (child); |
2453 | if (width_p) | |
2454 | c->left = w->left; | |
2455 | else | |
2456 | c->top = w->top; | |
2457 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2458 | } |
2459 | } | |
233a4a2c | 2460 | else if (!NILP (*forward)) |
7ab12479 | 2461 | { |
233a4a2c GM |
2462 | int fixed_size, each, extra, n; |
2463 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2464 | int last_pos, first_pos, nchildren, total; |
233a4a2c GM |
2465 | |
2466 | /* Determine the fixed-size portion of the this window, and the | |
2467 | number of child windows. */ | |
8b6d9dc9 | 2468 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2469 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2470 | { |
8b6d9dc9 GM |
2471 | int child_size; |
2472 | ||
7ab12479 | 2473 | c = XWINDOW (child); |
8b6d9dc9 GM |
2474 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
2475 | total += child_size; | |
2476 | ||
233a4a2c GM |
2477 | if (window_fixed_size_p (c, width_p, 0)) |
2478 | { | |
8b6d9dc9 | 2479 | fixed_size += child_size; |
233a4a2c GM |
2480 | ++nfixed; |
2481 | } | |
2482 | } | |
7ab12479 | 2483 | |
233a4a2c GM |
2484 | /* If the new size is smaller than fixed_size, or if there |
2485 | aren't any resizable windows, allow resizing fixed-size | |
2486 | windows. */ | |
2487 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2488 | ||
2489 | /* Compute how many lines/columns to add to each child. The | |
2490 | value of extra takes care of rounding errors. */ | |
2491 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
8b6d9dc9 GM |
2492 | each = (size - total) / n; |
2493 | extra = (size - total) - n * each; | |
233a4a2c GM |
2494 | |
2495 | /* Compute new children heights and edge positions. */ | |
8b6d9dc9 | 2496 | first_pos = width_p ? XINT (w->left) : XINT (w->top); |
233a4a2c GM |
2497 | last_pos = first_pos; |
2498 | for (child = *forward; !NILP (child); child = c->next) | |
2499 | { | |
2500 | int new_size, old_size; | |
2501 | ||
2502 | c = XWINDOW (child); | |
2503 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2504 | new_size = old_size; | |
7ab12479 | 2505 | |
233a4a2c GM |
2506 | /* The top or left edge position of this child equals the |
2507 | bottom or right edge of its predecessor. */ | |
2508 | if (width_p) | |
2509 | c->left = make_number (last_pos); | |
2510 | else | |
2511 | c->top = make_number (last_pos); | |
7ab12479 | 2512 | |
233a4a2c GM |
2513 | /* If this child can be resized, do it. */ |
2514 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2515 | { | |
2516 | new_size = old_size + each + extra; | |
2517 | extra = 0; | |
2518 | } | |
2519 | ||
2520 | /* Set new height. Note that size_window also propagates | |
2521 | edge positions to children, so it's not a no-op if we | |
2522 | didn't change the child's size. */ | |
2523 | size_window (child, new_size, width_p, 1); | |
2524 | ||
2525 | /* Remember the bottom/right edge position of this child; it | |
2526 | will be used to set the top/left edge of the next child. */ | |
2527 | last_pos += new_size; | |
7ab12479 | 2528 | } |
233a4a2c GM |
2529 | |
2530 | /* We should have covered the parent exactly with child windows. */ | |
2531 | xassert (size == last_pos - first_pos); | |
2532 | ||
7ab12479 | 2533 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2534 | if (!nodelete_p) |
2535 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2536 | { |
233a4a2c GM |
2537 | int child_size; |
2538 | c = XWINDOW (child); | |
8b6d9dc9 | 2539 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
233a4a2c | 2540 | size_window (child, child_size, width_p, 0); |
7ab12479 JB |
2541 | } |
2542 | } | |
2543 | } | |
2544 | ||
233a4a2c GM |
2545 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2546 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2547 | that become too small in the process. (The caller should check | |
2548 | later and do so if appropriate.) */ | |
7ab12479 | 2549 | |
5e14b1fc | 2550 | void |
233a4a2c | 2551 | set_window_height (window, height, nodelete) |
7ab12479 | 2552 | Lisp_Object window; |
233a4a2c | 2553 | int height; |
7ab12479 JB |
2554 | int nodelete; |
2555 | { | |
233a4a2c GM |
2556 | size_window (window, height, 0, nodelete); |
2557 | } | |
7ab12479 | 2558 | |
7ab12479 | 2559 | |
233a4a2c GM |
2560 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2561 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2562 | that become too small in the process. (The caller should check | |
2563 | later and do so if appropriate.) */ | |
7ab12479 | 2564 | |
233a4a2c GM |
2565 | void |
2566 | set_window_width (window, width, nodelete) | |
2567 | Lisp_Object window; | |
2568 | int width; | |
2569 | int nodelete; | |
2570 | { | |
2571 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2572 | } |
233a4a2c | 2573 | |
7ab12479 | 2574 | \f |
1d8d96fa | 2575 | int window_select_count; |
7ab12479 | 2576 | |
5b03d3c0 RS |
2577 | Lisp_Object |
2578 | Fset_window_buffer_unwind (obuf) | |
2579 | Lisp_Object obuf; | |
2580 | { | |
2581 | Fset_buffer (obuf); | |
2582 | return Qnil; | |
2583 | } | |
2584 | ||
7ab12479 | 2585 | |
5500c422 GM |
2586 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2587 | means it's allowed to run hooks. See make_frame for a case where | |
2588 | it's not allowed. */ | |
7ab12479 | 2589 | |
5500c422 GM |
2590 | void |
2591 | set_window_buffer (window, buffer, run_hooks_p) | |
2592 | Lisp_Object window, buffer; | |
2593 | int run_hooks_p; | |
2594 | { | |
2595 | struct window *w = XWINDOW (window); | |
2596 | struct buffer *b = XBUFFER (buffer); | |
2597 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2598 | |
2599 | w->buffer = buffer; | |
86e48436 RS |
2600 | |
2601 | if (EQ (window, selected_window)) | |
5500c422 | 2602 | b->last_selected_window = window; |
beb4e312 RS |
2603 | |
2604 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2605 | if (INTEGERP (b->display_count)) |
2606 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2607 | b->display_time = Fcurrent_time (); | |
86e48436 | 2608 | |
d834a2e9 | 2609 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2610 | XSETFASTINT (w->window_end_vpos, 0); |
2611 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2612 | w->window_end_valid = Qnil; |
1c686c99 | 2613 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 2614 | w->vscroll = 0; |
5500c422 | 2615 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2616 | set_marker_restricted (w->start, |
5500c422 | 2617 | make_number (b->last_window_start), |
7ab12479 JB |
2618 | buffer); |
2619 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2620 | w->force_start = Qnil; |
d834a2e9 | 2621 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2622 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2623 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2624 | |
2625 | /* We must select BUFFER for running the window-scroll-functions. | |
2626 | If WINDOW is selected, switch permanently. | |
2627 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2628 | if (EQ (window, selected_window)) |
2629 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2630 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2631 | because that might itself be a local variable. */ | |
2632 | else if (window_initialized) | |
2633 | { | |
2634 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2635 | Fset_buffer (buffer); | |
2636 | } | |
2637 | ||
5500c422 | 2638 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2639 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2640 | |
5500c422 GM |
2641 | if (run_hooks_p) |
2642 | { | |
2643 | if (! NILP (Vwindow_scroll_functions)) | |
2644 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2645 | Fmarker_position (w->start)); | |
2646 | ||
2647 | if (! NILP (Vwindow_configuration_change_hook) | |
2648 | && ! NILP (Vrun_hooks)) | |
2649 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2650 | } | |
543f5fb1 | 2651 | |
5b03d3c0 | 2652 | unbind_to (count, Qnil); |
5500c422 | 2653 | } |
5b03d3c0 | 2654 | |
5500c422 GM |
2655 | |
2656 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
fdb82f93 PJ |
2657 | doc: /* Make WINDOW display BUFFER as its contents. |
2658 | BUFFER can be a buffer or buffer name. */) | |
2659 | (window, buffer) | |
5500c422 GM |
2660 | register Lisp_Object window, buffer; |
2661 | { | |
2662 | register Lisp_Object tem; | |
2663 | register struct window *w = decode_window (window); | |
5500c422 | 2664 | |
bed0c171 | 2665 | XSETWINDOW (window, w); |
5500c422 GM |
2666 | buffer = Fget_buffer (buffer); |
2667 | CHECK_BUFFER (buffer, 1); | |
2668 | ||
2669 | if (NILP (XBUFFER (buffer)->name)) | |
2670 | error ("Attempt to display deleted buffer"); | |
2671 | ||
2672 | tem = w->buffer; | |
2673 | if (NILP (tem)) | |
2674 | error ("Window is deleted"); | |
2675 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2676 | is first being set up. */ | |
2677 | { | |
2678 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2679 | error ("Window is dedicated to `%s'", | |
2680 | XSTRING (XBUFFER (tem)->name)->data); | |
2681 | ||
2682 | unshow_buffer (w); | |
2683 | } | |
2684 | ||
2685 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2686 | return Qnil; |
2687 | } | |
2688 | ||
2689 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
fdb82f93 PJ |
2690 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
2691 | If WINDOW is not already selected, also make WINDOW's buffer current. | |
2692 | Note that the main editor command loop | |
2693 | selects the buffer of the selected window before each command. */) | |
2694 | (window) | |
7ab12479 | 2695 | register Lisp_Object window; |
b7354ddf RS |
2696 | { |
2697 | return select_window_1 (window, 1); | |
2698 | } | |
2699 | \f | |
719eaeb1 GM |
2700 | /* Note that selected_window can be nil |
2701 | when this is called from Fset_window_configuration. */ | |
2702 | ||
b7354ddf RS |
2703 | static Lisp_Object |
2704 | select_window_1 (window, recordflag) | |
2705 | register Lisp_Object window; | |
2706 | int recordflag; | |
7ab12479 JB |
2707 | { |
2708 | register struct window *w; | |
719eaeb1 | 2709 | register struct window *ow; |
1ae1a37d | 2710 | struct frame *sf; |
7ab12479 | 2711 | |
605be8af | 2712 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2713 | |
2714 | w = XWINDOW (window); | |
50e88778 | 2715 | w->frozen_window_start_p = 0; |
7ab12479 | 2716 | |
d834a2e9 | 2717 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2718 | if (EQ (window, selected_window)) |
2719 | return window; | |
2720 | ||
719eaeb1 GM |
2721 | if (!NILP (selected_window)) |
2722 | { | |
2723 | ow = XWINDOW (selected_window); | |
2724 | if (! NILP (ow->buffer)) | |
2725 | set_marker_both (ow->pointm, ow->buffer, | |
2726 | BUF_PT (XBUFFER (ow->buffer)), | |
2727 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2728 | } | |
7ab12479 JB |
2729 | |
2730 | selected_window = window; | |
1ae1a37d GM |
2731 | sf = SELECTED_FRAME (); |
2732 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2733 | { |
44fa5b1e | 2734 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2735 | /* Use this rather than Fhandle_switch_frame |
2736 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2737 | move around in the state where a minibuffer in a separate | |
2738 | frame is active. */ | |
2739 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2740 | } |
2741 | else | |
1ae1a37d | 2742 | sf->selected_window = window; |
7ab12479 | 2743 | |
b7354ddf RS |
2744 | if (recordflag) |
2745 | record_buffer (w->buffer); | |
7ab12479 JB |
2746 | Fset_buffer (w->buffer); |
2747 | ||
86e48436 RS |
2748 | XBUFFER (w->buffer)->last_selected_window = window; |
2749 | ||
7ab12479 JB |
2750 | /* Go to the point recorded in the window. |
2751 | This is important when the buffer is in more | |
2752 | than one window. It also matters when | |
2753 | redisplay_window has altered point after scrolling, | |
2754 | because it makes the change only in the window. */ | |
2755 | { | |
2756 | register int new_point = marker_position (w->pointm); | |
2757 | if (new_point < BEGV) | |
2758 | SET_PT (BEGV); | |
a9c95e08 | 2759 | else if (new_point > ZV) |
7ab12479 JB |
2760 | SET_PT (ZV); |
2761 | else | |
2762 | SET_PT (new_point); | |
2763 | } | |
2764 | ||
2765 | windows_or_buffers_changed++; | |
2766 | return window; | |
2767 | } | |
b7354ddf | 2768 | \f |
441a127e RS |
2769 | /* Deiconify the frame containing the window WINDOW, |
2770 | unless it is the selected frame; | |
2771 | then return WINDOW. | |
2772 | ||
2773 | The reason for the exception for the selected frame | |
2774 | is that it seems better not to change the selected frames visibility | |
2775 | merely because of displaying a different buffer in it. | |
2776 | The deiconification is useful when a buffer gets shown in | |
2777 | another frame that you were not using lately. */ | |
d07f802a RS |
2778 | |
2779 | static Lisp_Object | |
2780 | display_buffer_1 (window) | |
2781 | Lisp_Object window; | |
2782 | { | |
1ae1a37d GM |
2783 | Lisp_Object frame = XWINDOW (window)->frame; |
2784 | FRAME_PTR f = XFRAME (frame); | |
2785 | ||
d07f802a | 2786 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2787 | |
2788 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2789 | { |
2790 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2791 | Fmake_frame_visible (frame); |
37962e60 | 2792 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2793 | Fraise_frame (frame); |
60117126 | 2794 | } |
1ae1a37d | 2795 | |
d07f802a RS |
2796 | return window; |
2797 | } | |
2798 | ||
4628f7a4 | 2799 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
fdb82f93 PJ |
2800 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would be created specially. |
2801 | The value is actually t if the frame should be called with default frame | |
2802 | parameters, and a list of frame parameters if they were specified. | |
2803 | See `special-display-buffer-names', and `special-display-regexps'. */) | |
2804 | (buffer_name) | |
4628f7a4 EN |
2805 | Lisp_Object buffer_name; |
2806 | { | |
2807 | Lisp_Object tem; | |
2808 | ||
2809 | CHECK_STRING (buffer_name, 1); | |
2810 | ||
2811 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2812 | if (!NILP (tem)) | |
2813 | return Qt; | |
2814 | ||
2815 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2816 | if (!NILP (tem)) | |
2817 | return XCDR (tem); | |
2818 | ||
2819 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2820 | { | |
2821 | Lisp_Object car = XCAR (tem); | |
2822 | if (STRINGP (car) | |
2823 | && fast_string_match (car, buffer_name) >= 0) | |
2824 | return Qt; | |
2825 | else if (CONSP (car) | |
2826 | && STRINGP (XCAR (car)) | |
2827 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2828 | return XCDR (car); |
4628f7a4 EN |
2829 | } |
2830 | return Qnil; | |
2831 | } | |
2832 | ||
2833 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
fdb82f93 PJ |
2834 | doc: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window. |
2835 | See `same-window-buffer-names' and `same-window-regexps'. */) | |
2836 | (buffer_name) | |
4628f7a4 EN |
2837 | Lisp_Object buffer_name; |
2838 | { | |
2839 | Lisp_Object tem; | |
2840 | ||
2841 | CHECK_STRING (buffer_name, 1); | |
2842 | ||
2843 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2844 | if (!NILP (tem)) | |
2845 | return Qt; | |
2846 | ||
2847 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2848 | if (!NILP (tem)) | |
2849 | return Qt; | |
2850 | ||
2851 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2852 | { | |
2853 | Lisp_Object car = XCAR (tem); | |
2854 | if (STRINGP (car) | |
2855 | && fast_string_match (car, buffer_name) >= 0) | |
2856 | return Qt; | |
2857 | else if (CONSP (car) | |
2858 | && STRINGP (XCAR (car)) | |
2859 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2860 | return Qt; | |
2861 | } | |
2862 | return Qnil; | |
2863 | } | |
2864 | ||
fdb82f93 | 2865 | /* Use B so the default is (other-buffer). */ |
53f76081 | 2866 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
2867 | "BDisplay buffer: \nP", |
2868 | doc: /* Make BUFFER appear in some window but don't select it. | |
2869 | BUFFER can be a buffer or a buffer name. | |
2870 | If BUFFER is shown already in some window, just use that one, | |
2871 | unless the window is the selected window and the optional second | |
2872 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
2873 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
2874 | Returns the window displaying BUFFER. | |
2875 | If `display-reuse-frames' is non-nil, and another frame is currently | |
2876 | displaying BUFFER, then simply raise that frame. | |
2877 | ||
2878 | The variables `special-display-buffer-names', `special-display-regexps', | |
2879 | `same-window-buffer-names', and `same-window-regexps' customize how certain | |
2880 | buffer names are handled. | |
2881 | ||
2882 | If optional argument FRAME is `visible', search all visible frames. | |
2883 | If FRAME is 0, search all visible and iconified frames. | |
2884 | If FRAME is t, search all frames. | |
2885 | If FRAME is a frame, search only that frame. | |
2886 | If FRAME is nil, search only the selected frame | |
2887 | (actually the last nonminibuffer frame), | |
2888 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
2889 | which means search visible and iconified frames. | |
2890 | ||
2891 | If `even-window-heights' is non-nil, window heights will be evened out | |
2892 | if displaying the buffer causes two vertically adjacent windows to be | |
2893 | displayed. */) | |
2894 | (buffer, not_this_window, frame) | |
53f76081 | 2895 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 2896 | { |
aee631c2 | 2897 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2898 | struct frame *f; |
7ab12479 | 2899 | |
aee631c2 | 2900 | swp = Qnil; |
7ab12479 JB |
2901 | buffer = Fget_buffer (buffer); |
2902 | CHECK_BUFFER (buffer, 0); | |
2903 | ||
265a9e55 | 2904 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2905 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2906 | ||
265a9e55 | 2907 | if (NILP (not_this_window) |
7ab12479 | 2908 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2909 | return display_buffer_1 (selected_window); |
7ab12479 | 2910 | |
855d8627 RS |
2911 | /* See if the user has specified this buffer should appear |
2912 | in the selected window. */ | |
2913 | if (NILP (not_this_window)) | |
2914 | { | |
aee631c2 RS |
2915 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2916 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2917 | { |
2918 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2919 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2920 | } |
855d8627 RS |
2921 | } |
2922 | ||
9c3da604 | 2923 | /* If the user wants pop-up-frames or display-reuse-frames, then |
73dc5198 KH |
2924 | look for a window showing BUFFER on any visible or iconified frame. |
2925 | Otherwise search only the current frame. */ | |
53f76081 RS |
2926 | if (! NILP (frame)) |
2927 | tem = frame; | |
9c3da604 GM |
2928 | else if (pop_up_frames |
2929 | || display_buffer_reuse_frames | |
2930 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2931 | XSETFASTINT (tem, 0); |
2932 | else | |
73dc5198 | 2933 | XSETFRAME (tem, last_nonminibuf_frame); |
9c3da604 | 2934 | |
73dc5198 | 2935 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
2936 | if (!NILP (window) |
2937 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 2938 | return display_buffer_1 (window); |
7ab12479 | 2939 | |
a90712c2 | 2940 | /* Certain buffer names get special handling. */ |
aee631c2 | 2941 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2942 | { |
4628f7a4 EN |
2943 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2944 | if (EQ (tem, Qt)) | |
a90712c2 | 2945 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2946 | if (CONSP (tem)) |
2947 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2948 | } |
2949 | ||
44fa5b1e JB |
2950 | /* If there are no frames open that have more than a minibuffer, |
2951 | we need to create a new frame. */ | |
2952 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2953 | { |
a90712c2 | 2954 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2955 | Fset_window_buffer (window, buffer); |
d07f802a | 2956 | return display_buffer_1 (window); |
7ab12479 | 2957 | } |
7ab12479 | 2958 | |
1ae1a37d | 2959 | f = SELECTED_FRAME (); |
43bad991 | 2960 | if (pop_up_windows |
1ae1a37d | 2961 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2962 | /* If the current frame is a special display frame, |
2963 | don't try to reuse its windows. */ | |
1ae1a37d | 2964 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2965 | { |
12cae7c0 KH |
2966 | Lisp_Object frames; |
2967 | ||
37962e60 | 2968 | frames = Qnil; |
1ae1a37d | 2969 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2970 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2971 | /* Don't try to create a window if would get an error */ |
2972 | if (split_height_threshold < window_min_height << 1) | |
2973 | split_height_threshold = window_min_height << 1; | |
2974 | ||
cee67da9 RS |
2975 | /* Note that both Fget_largest_window and Fget_lru_window |
2976 | ignore minibuffers and dedicated windows. | |
2977 | This means they can return nil. */ | |
7ab12479 | 2978 | |
cee67da9 RS |
2979 | /* If the frame we would try to split cannot be split, |
2980 | try other frames. */ | |
1ae1a37d | 2981 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
2982 | { |
2983 | /* Try visible frames first. */ | |
2984 | window = Fget_largest_window (Qvisible); | |
2985 | /* If that didn't work, try iconified frames. */ | |
2986 | if (NILP (window)) | |
2987 | window = Fget_largest_window (make_number (0)); | |
2988 | if (NILP (window)) | |
2989 | window = Fget_largest_window (Qt); | |
2990 | } | |
2991 | else | |
2992 | window = Fget_largest_window (frames); | |
2993 | ||
92cca945 RS |
2994 | /* If we got a tall enough full-width window that can be split, |
2995 | split it. */ | |
265a9e55 | 2996 | if (!NILP (window) |
92cca945 | 2997 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2998 | && window_height (window) >= split_height_threshold |
111e5992 | 2999 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3000 | window = Fsplit_window (window, Qnil, Qnil); |
3001 | else | |
3002 | { | |
1942f68f RS |
3003 | Lisp_Object upper, lower, other; |
3004 | ||
44fa5b1e | 3005 | window = Fget_lru_window (frames); |
92cca945 RS |
3006 | /* If the LRU window is selected, and big enough, |
3007 | and can be split, split it. */ | |
cee67da9 | 3008 | if (!NILP (window) |
92cca945 | 3009 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3010 | && (EQ (window, selected_window) |
3011 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3012 | && window_height (window) >= window_min_height << 1) |
3013 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3014 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3015 | |
cee67da9 | 3016 | /* Try visible frames first. */ |
48d9379d RS |
3017 | if (NILP (window)) |
3018 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3019 | if (NILP (window)) |
3020 | window = Fget_largest_window (Qvisible); | |
3021 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3022 | if (NILP (window)) |
3023 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3024 | if (NILP (window)) |
3025 | window = Fget_largest_window (make_number (0)); | |
3026 | /* Try invisible frames. */ | |
48d9379d RS |
3027 | if (NILP (window)) |
3028 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3029 | if (NILP (window)) |
3030 | window = Fget_largest_window (Qt); | |
3031 | /* As a last resort, make a new frame. */ | |
3032 | if (NILP (window)) | |
3033 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3034 | /* If window appears above or below another, |
3035 | even out their heights. */ | |
cac66e4f | 3036 | other = upper = lower = Qnil; |
1942f68f RS |
3037 | if (!NILP (XWINDOW (window)->prev)) |
3038 | other = upper = XWINDOW (window)->prev, lower = window; | |
3039 | if (!NILP (XWINDOW (window)->next)) | |
3040 | other = lower = XWINDOW (window)->next, upper = window; | |
3041 | if (!NILP (other) | |
6529ed87 | 3042 | && !NILP (Veven_window_heights) |
1942f68f | 3043 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
296b535c KH |
3044 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
3045 | && (XFASTINT (XWINDOW (other)->height) | |
3046 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 3047 | { |
296b535c KH |
3048 | int total = (XFASTINT (XWINDOW (other)->height) |
3049 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
3050 | enlarge_window (upper, |
3051 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 3052 | 0); |
1942f68f | 3053 | } |
7ab12479 JB |
3054 | } |
3055 | } | |
3056 | else | |
3057 | window = Fget_lru_window (Qnil); | |
3058 | ||
3059 | Fset_window_buffer (window, buffer); | |
d07f802a | 3060 | return display_buffer_1 (window); |
7ab12479 JB |
3061 | } |
3062 | ||
3063 | void | |
3064 | temp_output_buffer_show (buf) | |
3065 | register Lisp_Object buf; | |
3066 | { | |
3067 | register struct buffer *old = current_buffer; | |
3068 | register Lisp_Object window; | |
3069 | register struct window *w; | |
3070 | ||
bccd3dd1 RS |
3071 | XBUFFER (buf)->directory = current_buffer->directory; |
3072 | ||
7ab12479 | 3073 | Fset_buffer (buf); |
c6367666 | 3074 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3075 | BEGV = BEG; |
3076 | ZV = Z; | |
3077 | SET_PT (BEG); | |
b1599b4c | 3078 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
3079 | set_buffer_internal (old); |
3080 | ||
3081 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3082 | call1 (Vtemp_buffer_show_function, buf); | |
3083 | else | |
3084 | { | |
53f76081 | 3085 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3086 | |
1ae1a37d | 3087 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3088 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3089 | Vminibuf_scroll_window = window; |
3090 | w = XWINDOW (window); | |
d834a2e9 | 3091 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3092 | XSETFASTINT (w->min_hscroll, 0); |
b73ea88e RS |
3093 | set_marker_restricted_both (w->start, buf, 1, 1); |
3094 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3095 | |
beb4e312 RS |
3096 | /* Run temp-buffer-show-hook, with the chosen window selected |
3097 | and it sbuffer current. */ | |
f52cca03 | 3098 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3099 | { |
f52cca03 RS |
3100 | Lisp_Object tem; |
3101 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3102 | if (!NILP (tem)) |
3103 | { | |
f52cca03 RS |
3104 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3105 | if (!NILP (tem)) | |
3106 | { | |
3107 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
3108 | Lisp_Object prev_window; |
3109 | prev_window = selected_window; | |
2cccc823 | 3110 | |
f52cca03 | 3111 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 3112 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 3113 | select_window_1 (window, 0); |
beb4e312 | 3114 | Fset_buffer (w->buffer); |
f52cca03 | 3115 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 3116 | select_window_1 (prev_window, 0); |
f52cca03 RS |
3117 | unbind_to (count, Qnil); |
3118 | } | |
2cccc823 RS |
3119 | } |
3120 | } | |
3121 | } | |
7ab12479 JB |
3122 | } |
3123 | \f | |
dfcf069d | 3124 | static void |
7ab12479 JB |
3125 | make_dummy_parent (window) |
3126 | Lisp_Object window; | |
3127 | { | |
cffec418 | 3128 | Lisp_Object new; |
7ab12479 | 3129 | register struct window *o, *p; |
cffec418 | 3130 | int i; |
7ab12479 | 3131 | |
cffec418 | 3132 | o = XWINDOW (window); |
26605be9 | 3133 | p = allocate_window (); |
cffec418 | 3134 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3135 | ((struct Lisp_Vector *) p)->contents[i] |
3136 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3137 | XSETWINDOW (new, p); |
7ab12479 | 3138 | |
d834a2e9 | 3139 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3140 | |
3141 | /* Put new into window structure in place of window */ | |
3142 | replace_window (window, new); | |
3143 | ||
3144 | o->next = Qnil; | |
3145 | o->prev = Qnil; | |
3146 | o->vchild = Qnil; | |
3147 | o->hchild = Qnil; | |
3148 | o->parent = new; | |
3149 | ||
3150 | p->start = Qnil; | |
3151 | p->pointm = Qnil; | |
3152 | p->buffer = Qnil; | |
3153 | } | |
3154 | ||
3155 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3156 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3157 | WINDOW defaults to selected one and SIZE to half its size. | |
3158 | If optional third arg HORFLAG is non-nil, split side by side | |
3159 | and put SIZE columns in the first of the pair. In that case, | |
3160 | SIZE includes that window's scroll bar, or the divider column to its right. */) | |
3161 | (window, size, horflag) | |
77ae0fe3 | 3162 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3163 | { |
3164 | register Lisp_Object new; | |
3165 | register struct window *o, *p; | |
c0807608 | 3166 | FRAME_PTR fo; |
77ae0fe3 | 3167 | register int size_int; |
7ab12479 | 3168 | |
265a9e55 | 3169 | if (NILP (window)) |
7ab12479 JB |
3170 | window = selected_window; |
3171 | else | |
605be8af | 3172 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
3173 | |
3174 | o = XWINDOW (window); | |
c0807608 | 3175 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3176 | |
77ae0fe3 | 3177 | if (NILP (size)) |
7ab12479 | 3178 | { |
265a9e55 | 3179 | if (!NILP (horflag)) |
c0807608 | 3180 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3181 | the usable space in columns by two. |
3182 | We round up, since the left-hand window may include | |
3183 | a dividing line, while the right-hand may not. */ | |
3184 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3185 | else |
77ae0fe3 | 3186 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3187 | } |
3188 | else | |
3189 | { | |
77ae0fe3 KH |
3190 | CHECK_NUMBER (size, 1); |
3191 | size_int = XINT (size); | |
7ab12479 JB |
3192 | } |
3193 | ||
3194 | if (MINI_WINDOW_P (o)) | |
3195 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3196 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3197 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3198 | |
a481b3ea | 3199 | check_min_window_sizes (); |
7ab12479 | 3200 | |
265a9e55 | 3201 | if (NILP (horflag)) |
7ab12479 | 3202 | { |
77ae0fe3 KH |
3203 | if (size_int < window_min_height) |
3204 | error ("Window height %d too small (after splitting)", size_int); | |
3205 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3206 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3207 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3208 | if (NILP (o->parent) |
3209 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3210 | { |
3211 | make_dummy_parent (window); | |
3212 | new = o->parent; | |
3213 | XWINDOW (new)->vchild = window; | |
3214 | } | |
3215 | } | |
3216 | else | |
3217 | { | |
77ae0fe3 KH |
3218 | if (size_int < window_min_width) |
3219 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3220 | |
3221 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3222 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3223 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3224 | if (NILP (o->parent) |
3225 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3226 | { |
3227 | make_dummy_parent (window); | |
3228 | new = o->parent; | |
3229 | XWINDOW (new)->hchild = window; | |
3230 | } | |
3231 | } | |
3232 | ||
3233 | /* Now we know that window's parent is a vertical combination | |
3234 | if we are dividing vertically, or a horizontal combination | |
3235 | if we are making side-by-side windows */ | |
3236 | ||
3237 | windows_or_buffers_changed++; | |
c0807608 | 3238 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3239 | new = make_window (); |
3240 | p = XWINDOW (new); | |
3241 | ||
44fa5b1e | 3242 | p->frame = o->frame; |
7ab12479 | 3243 | p->next = o->next; |
265a9e55 | 3244 | if (!NILP (p->next)) |
7ab12479 JB |
3245 | XWINDOW (p->next)->prev = new; |
3246 | p->prev = window; | |
3247 | o->next = new; | |
3248 | p->parent = o->parent; | |
3249 | p->buffer = Qt; | |
5500c422 GM |
3250 | p->window_end_valid = Qnil; |
3251 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3252 | |
44fa5b1e | 3253 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3254 | |
265a9e55 | 3255 | if (!NILP (horflag)) |
7ab12479 JB |
3256 | { |
3257 | p->height = o->height; | |
3258 | p->top = o->top; | |
a59fed7e | 3259 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3260 | XSETFASTINT (o->width, size_int); |
3261 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3262 | } |
3263 | else | |
3264 | { | |
3265 | p->left = o->left; | |
3266 | p->width = o->width; | |
77ae0fe3 KH |
3267 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3268 | XSETFASTINT (o->height, size_int); | |
3269 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3270 | } |
3271 | ||
5500c422 GM |
3272 | /* Adjust glyph matrices. */ |
3273 | adjust_glyphs (fo); | |
543f5fb1 | 3274 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3275 | return new; |
3276 | } | |
3277 | \f | |
3278 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
fdb82f93 PJ |
3279 | doc: /* Make current window ARG lines bigger. |
3280 | From program, optional second arg non-nil means grow sideways ARG columns. | |
3281 | Interactively, if an argument is not given, make the window one line bigger. */) | |
3282 | (arg, side) | |
413430c5 | 3283 | register Lisp_Object arg, side; |
7ab12479 | 3284 | { |
413430c5 | 3285 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3286 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3287 | |
3288 | if (! NILP (Vwindow_configuration_change_hook)) | |
3289 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3290 | ||
7ab12479 JB |
3291 | return Qnil; |
3292 | } | |
3293 | ||
3294 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
fdb82f93 PJ |
3295 | doc: /* Make current window ARG lines smaller. |
3296 | From program, optional second arg non-nil means shrink sideways arg columns. | |
3297 | Interactively, if an argument is not given, make the window one line smaller. */) | |
3298 | (arg, side) | |
413430c5 | 3299 | register Lisp_Object arg, side; |
7ab12479 | 3300 | { |
413430c5 | 3301 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3302 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3303 | |
3304 | if (! NILP (Vwindow_configuration_change_hook)) | |
3305 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3306 | ||
7ab12479 JB |
3307 | return Qnil; |
3308 | } | |
3309 | ||
3310 | int | |
3311 | window_height (window) | |
3312 | Lisp_Object window; | |
3313 | { | |
3314 | register struct window *p = XWINDOW (window); | |
3315 | return XFASTINT (p->height); | |
3316 | } | |
3317 | ||
3318 | int | |
3319 | window_width (window) | |
3320 | Lisp_Object window; | |
3321 | { | |
3322 | register struct window *p = XWINDOW (window); | |
3323 | return XFASTINT (p->width); | |
3324 | } | |
3325 | ||
c1636aa6 | 3326 | |
7ab12479 | 3327 | #define CURBEG(w) \ |
3578db3c | 3328 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3329 | |
3330 | #define CURSIZE(w) \ | |
3578db3c | 3331 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3332 | |
233a4a2c GM |
3333 | |
3334 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3335 | increase its width. Siblings of the selected window are resized to | |
3336 | fullfil the size request. If they become too small in the process, | |
3337 | they will be deleted. */ | |
7ab12479 | 3338 | |
f984d4fc | 3339 | static void |
86c8e823 GM |
3340 | enlarge_window (window, delta, widthflag) |
3341 | Lisp_Object window; | |
233a4a2c | 3342 | int delta, widthflag; |
7ab12479 | 3343 | { |
86c8e823 | 3344 | Lisp_Object parent, next, prev; |
233a4a2c | 3345 | struct window *p; |
3578db3c KR |
3346 | Lisp_Object *sizep; |
3347 | int maximum; | |
5e14b1fc AS |
3348 | int (*sizefun) P_ ((Lisp_Object)) |
3349 | = widthflag ? window_width : window_height; | |
233a4a2c | 3350 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3351 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3352 | |
233a4a2c GM |
3353 | /* Check values of window_min_width and window_min_height for |
3354 | validity. */ | |
a481b3ea | 3355 | check_min_window_sizes (); |
7ab12479 | 3356 | |
233a4a2c | 3357 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3358 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3359 | error ("Window is not resizable"); | |
3360 | ||
3361 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3362 | while (1) |
3363 | { | |
3364 | p = XWINDOW (window); | |
3365 | parent = p->parent; | |
233a4a2c | 3366 | |
265a9e55 | 3367 | if (NILP (parent)) |
7ab12479 JB |
3368 | { |
3369 | if (widthflag) | |
3370 | error ("No other window to side of this one"); | |
3371 | break; | |
3372 | } | |
233a4a2c GM |
3373 | |
3374 | if (widthflag | |
3375 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3376 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3377 | break; |
233a4a2c | 3378 | |
7ab12479 JB |
3379 | window = parent; |
3380 | } | |
3381 | ||
05c2896a | 3382 | sizep = &CURSIZE (window); |
7ab12479 | 3383 | |
7ab12479 JB |
3384 | { |
3385 | register int maxdelta; | |
7ab12479 | 3386 | |
3578db3c | 3387 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
c1636aa6 GM |
3388 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3389 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3390 | widthflag, 0, 0)) |
c1636aa6 GM |
3391 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3392 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3393 | widthflag, 0, 0)) |
44fa5b1e JB |
3394 | /* This is a frame with only one window, a minibuffer-only |
3395 | or a minibufferless frame. */ | |
d5783c40 | 3396 | : (delta = 0)); |
7ab12479 JB |
3397 | |
3398 | if (delta > maxdelta) | |
3399 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3400 | the full frame, or make the only window aside from the |
3401 | minibuffer the full frame. */ | |
7ab12479 | 3402 | delta = maxdelta; |
6b54027b | 3403 | } |
d5783c40 | 3404 | |
3578db3c | 3405 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3406 | { |
543f5fb1 | 3407 | delete_window (window); |
d5783c40 | 3408 | return; |
6b54027b RS |
3409 | } |
3410 | ||
3411 | if (delta == 0) | |
3412 | return; | |
7ab12479 | 3413 | |
db98a733 RS |
3414 | /* Find the total we can get from other siblings. */ |
3415 | maximum = 0; | |
3416 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3417 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3418 | widthflag, 0, 0); |
db98a733 | 3419 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3420 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3421 | widthflag, 0, 0); |
db98a733 RS |
3422 | |
3423 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3424 | if (delta <= maximum) |
7ab12479 | 3425 | { |
db98a733 RS |
3426 | Lisp_Object first_unaffected; |
3427 | Lisp_Object first_affected; | |
233a4a2c | 3428 | int fixed_p; |
db98a733 RS |
3429 | |
3430 | next = p->next; | |
3431 | prev = p->prev; | |
3432 | first_affected = window; | |
3433 | /* Look at one sibling at a time, | |
3434 | moving away from this window in both directions alternately, | |
3435 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3436 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3437 | { |
db98a733 RS |
3438 | if (! NILP (next)) |
3439 | { | |
c1636aa6 | 3440 | int this_one = ((*sizefun) (next) |
233a4a2c | 3441 | - window_min_size (XWINDOW (next), |
f984d4fc | 3442 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3443 | if (!fixed_p) |
3444 | { | |
3445 | if (this_one > delta) | |
3446 | this_one = delta; | |
3447 | ||
3448 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3449 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3450 | |
233a4a2c GM |
3451 | delta -= this_one; |
3452 | } | |
3453 | ||
db98a733 RS |
3454 | next = XWINDOW (next)->next; |
3455 | } | |
233a4a2c | 3456 | |
db98a733 RS |
3457 | if (delta == 0) |
3458 | break; | |
233a4a2c | 3459 | |
db98a733 RS |
3460 | if (! NILP (prev)) |
3461 | { | |
c1636aa6 | 3462 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3463 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3464 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3465 | if (!fixed_p) |
3466 | { | |
3467 | if (this_one > delta) | |
3468 | this_one = delta; | |
3469 | ||
3470 | first_affected = prev; | |
3471 | ||
3472 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3473 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3474 | |
3475 | delta -= this_one; | |
3476 | } | |
3477 | ||
db98a733 RS |
3478 | prev = XWINDOW (prev)->prev; |
3479 | } | |
3480 | } | |
3481 | ||
233a4a2c GM |
3482 | xassert (delta == 0); |
3483 | ||
db98a733 RS |
3484 | /* Now recalculate the edge positions of all the windows affected, |
3485 | based on the new sizes. */ | |
3486 | first_unaffected = next; | |
3487 | prev = first_affected; | |
3488 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3489 | prev = next, next = XWINDOW (next)->next) | |
3490 | { | |
3578db3c | 3491 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3492 | /* This does not change size of NEXT, |
3493 | but it propagates the new top edge to its children */ | |
3494 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3495 | } | |
7ab12479 JB |
3496 | } |
3497 | else | |
3498 | { | |
3499 | register int delta1; | |
3500 | register int opht = (*sizefun) (parent); | |
3501 | ||
3502 | /* If trying to grow this window to or beyond size of the parent, | |
3503 | make delta1 so big that, on shrinking back down, | |
3504 | all the siblings end up with less than one line and are deleted. */ | |
3578db3c | 3505 | if (opht <= XINT (*sizep) + delta) |
7ab12479 | 3506 | delta1 = opht * opht * 2; |
7ab12479 | 3507 | else |
233a4a2c GM |
3508 | { |
3509 | /* Otherwise, make delta1 just right so that if we add | |
3510 | delta1 lines to this window and to the parent, and then | |
3511 | shrink the parent back to its original size, the new | |
3512 | proportional size of this window will increase by delta. | |
3513 | ||
3514 | The function size_window will compute the new height h' | |
3515 | of the window from delta1 as: | |
3516 | ||
3517 | e = delta1/n | |
3518 | x = delta1 - delta1/n * n for the 1st resizable child | |
3519 | h' = h + e + x | |
3520 | ||
3521 | where n is the number of children that can be resized. | |
3522 | We can ignore x by choosing a delta1 that is a multiple of | |
3523 | n. We want the height of this window to come out as | |
3524 | ||
3525 | h' = h + delta | |
3526 | ||
3527 | So, delta1 must be | |
3528 | ||
3529 | h + e = h + delta | |
3530 | delta1/n = delta | |
3531 | delta1 = n * delta. | |
3532 | ||
3533 | The number of children n rquals the number of resizable | |
3534 | children of this window + 1 because we know window itself | |
3535 | is resizable (otherwise we would have signalled an error. */ | |
3536 | ||
3537 | struct window *w = XWINDOW (window); | |
3538 | Lisp_Object s; | |
3539 | int n = 1; | |
3540 | ||
3541 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3542 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3543 | ++n; | |
3544 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3545 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3546 | ++n; | |
3547 | ||
3548 | delta1 = n * delta; | |
3549 | } | |
7ab12479 JB |
3550 | |
3551 | /* Add delta1 lines or columns to this window, and to the parent, | |
3552 | keeping things consistent while not affecting siblings. */ | |
3578db3c KR |
3553 | XSETINT (CURSIZE (parent), opht + delta1); |
3554 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
7ab12479 JB |
3555 | |
3556 | /* Squeeze out delta1 lines or columns from our parent, | |
3557 | shriking this window and siblings proportionately. | |
3558 | This brings parent back to correct size. | |
3559 | Delta1 was calculated so this makes this window the desired size, | |
3560 | taking it all out of the siblings. */ | |
3561 | (*setsizefun) (parent, opht, 0); | |
3562 | } | |
3563 | ||
d834a2e9 | 3564 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3565 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3566 | |
3567 | /* Adjust glyph matrices. */ | |
3568 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3569 | } |
c1636aa6 | 3570 | |
7ab12479 JB |
3571 | #undef CURBEG |
3572 | #undef CURSIZE | |
3573 | ||
5500c422 | 3574 | |
f984d4fc GM |
3575 | \f |
3576 | /*********************************************************************** | |
3577 | Resizing Mini-Windows | |
3578 | ***********************************************************************/ | |
3579 | ||
3580 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3581 | |
43b4a21f GM |
3582 | enum save_restore_action |
3583 | { | |
3584 | CHECK_ORIG_SIZES, | |
3585 | SAVE_ORIG_SIZES, | |
3586 | RESTORE_ORIG_SIZES | |
3587 | }; | |
3588 | ||
3589 | static int save_restore_orig_size P_ ((struct window *, | |
3590 | enum save_restore_action)); | |
f984d4fc GM |
3591 | |
3592 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3593 | from lowest windows first. */ | |
3594 | ||
3595 | static void | |
3596 | shrink_window_lowest_first (w, height) | |
3597 | struct window *w; | |
3598 | int height; | |
3599 | { | |
3600 | struct window *c; | |
3601 | Lisp_Object child; | |
3602 | int old_height; | |
3603 | ||
3604 | xassert (!MINI_WINDOW_P (w)); | |
3605 | ||
3606 | /* Set redisplay hints. */ | |
3607 | XSETFASTINT (w->last_modified, 0); | |
3608 | XSETFASTINT (w->last_overlay_modified, 0); | |
3609 | windows_or_buffers_changed++; | |
3610 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3611 | ||
3612 | old_height = XFASTINT (w->height); | |
3613 | XSETFASTINT (w->height, height); | |
3614 | ||
3615 | if (!NILP (w->hchild)) | |
3616 | { | |
3617 | for (child = w->hchild; !NILP (child); child = c->next) | |
3618 | { | |
3619 | c = XWINDOW (child); | |
3620 | c->top = w->top; | |
3621 | shrink_window_lowest_first (c, height); | |
3622 | } | |
3623 | } | |
3624 | else if (!NILP (w->vchild)) | |
3625 | { | |
3626 | Lisp_Object last_child; | |
3627 | int delta = old_height - height; | |
3628 | int last_top; | |
6bbd7a29 GM |
3629 | |
3630 | last_child = Qnil; | |
f984d4fc GM |
3631 | |
3632 | /* Find the last child. We are taking space from lowest windows | |
3633 | first, so we iterate over children from the last child | |
3634 | backwards. */ | |
3635 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3636 | last_child = child; | |
3637 | ||
3638 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3639 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3640 | { | |
3641 | int this_one; | |
3642 | ||
3643 | c = XWINDOW (child); | |
3644 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3645 | ||
3646 | if (this_one > delta) | |
3647 | this_one = delta; | |
3648 | ||
3649 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3650 | delta -= this_one; | |
3651 | } | |
3652 | ||
3653 | /* Compute new positions. */ | |
3578db3c | 3654 | last_top = XINT (w->top); |
f984d4fc GM |
3655 | for (child = w->vchild; !NILP (child); child = c->next) |
3656 | { | |
3657 | c = XWINDOW (child); | |
3658 | c->top = make_number (last_top); | |
3659 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3660 | last_top += XFASTINT (c->height); | |
3661 | } | |
3662 | } | |
3663 | } | |
3664 | ||
3665 | ||
43b4a21f GM |
3666 | /* Save, restore, or check positions and sizes in the window tree |
3667 | rooted at W. ACTION says what to do. | |
f984d4fc | 3668 | |
43b4a21f GM |
3669 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3670 | members are valid for all windows in the window tree. Value is | |
3671 | non-zero if they are valid. | |
3672 | ||
3673 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3674 | orig_top and orig_height for all windows in the tree. | |
3675 | ||
3676 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3677 | values stored in orig_top and orig_height for all windows. */ | |
3678 | ||
3679 | static int | |
3680 | save_restore_orig_size (w, action) | |
f984d4fc | 3681 | struct window *w; |
43b4a21f | 3682 | enum save_restore_action action; |
f984d4fc | 3683 | { |
43b4a21f GM |
3684 | int success_p = 1; |
3685 | ||
f984d4fc GM |
3686 | while (w) |
3687 | { | |
3688 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3689 | { |
3690 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3691 | success_p = 0; | |
3692 | } | |
f984d4fc | 3693 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3694 | { |
3695 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3696 | success_p = 0; | |
3697 | } | |
f984d4fc | 3698 | |
43b4a21f | 3699 | switch (action) |
f984d4fc | 3700 | { |
43b4a21f GM |
3701 | case CHECK_ORIG_SIZES: |
3702 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3703 | return 0; | |
3704 | break; | |
3705 | ||
3706 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3707 | w->orig_top = w->top; |
3708 | w->orig_height = w->height; | |
43b4a21f GM |
3709 | XSETFASTINT (w->last_modified, 0); |
3710 | XSETFASTINT (w->last_overlay_modified, 0); | |
3711 | break; | |
3712 | ||
3713 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3714 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3715 | w->top = w->orig_top; | |
3716 | w->height = w->orig_height; | |
3717 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3718 | XSETFASTINT (w->last_modified, 0); |
3719 | XSETFASTINT (w->last_overlay_modified, 0); | |
3720 | break; | |
3721 | ||
3722 | default: | |
3723 | abort (); | |
f984d4fc | 3724 | } |
43b4a21f | 3725 | |
f984d4fc GM |
3726 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3727 | } | |
43b4a21f GM |
3728 | |
3729 | return success_p; | |
f984d4fc GM |
3730 | } |
3731 | ||
3732 | ||
3733 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3734 | without deleting other windows. */ | |
3735 | ||
3736 | void | |
3737 | grow_mini_window (w, delta) | |
3738 | struct window *w; | |
3739 | int delta; | |
3740 | { | |
3741 | struct frame *f = XFRAME (w->frame); | |
3742 | struct window *root; | |
3743 | ||
3744 | xassert (MINI_WINDOW_P (w)); | |
3745 | xassert (delta >= 0); | |
3746 | ||
3747 | /* Check values of window_min_width and window_min_height for | |
3748 | validity. */ | |
3749 | check_min_window_sizes (); | |
3750 | ||
3751 | /* Compute how much we can enlarge the mini-window without deleting | |
3752 | other windows. */ | |
3753 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3754 | if (delta) | |
3755 | { | |
3756 | int min_height = window_min_size (root, 0, 0, 0); | |
3757 | if (XFASTINT (root->height) - delta < min_height) | |
3758 | delta = XFASTINT (root->height) - min_height; | |
3759 | } | |
3760 | ||
3761 | if (delta) | |
3762 | { | |
3763 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3764 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3765 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3766 | |
3767 | /* Shrink other windows. */ | |
3768 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3769 | ||
3770 | /* Grow the mini-window. */ | |
3578db3c | 3771 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3772 | w->height = make_number (XFASTINT (w->height) + delta); |
3773 | XSETFASTINT (w->last_modified, 0); | |
3774 | XSETFASTINT (w->last_overlay_modified, 0); | |
3775 | ||
3776 | adjust_glyphs (f); | |
3777 | } | |
3778 | } | |
3779 | ||
3780 | ||
86c8e823 GM |
3781 | /* Shrink mini-window W. If there is recorded info about window sizes |
3782 | before a call to grow_mini_window, restore recorded window sizes. | |
3783 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3784 | line. */ | |
f984d4fc GM |
3785 | |
3786 | void | |
3787 | shrink_mini_window (w) | |
3788 | struct window *w; | |
3789 | { | |
3790 | struct frame *f = XFRAME (w->frame); | |
3791 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3792 | ||
43b4a21f | 3793 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3794 | { |
43b4a21f | 3795 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3796 | adjust_glyphs (f); |
3797 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3798 | windows_or_buffers_changed = 1; | |
3799 | } | |
86c8e823 GM |
3800 | else if (XFASTINT (w->height) > 1) |
3801 | { | |
0130fe1a GM |
3802 | /* Distribute the additional lines of the mini-window |
3803 | among the other windows. */ | |
86c8e823 GM |
3804 | Lisp_Object window; |
3805 | XSETWINDOW (window, w); | |
3806 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3807 | } | |
f984d4fc GM |
3808 | } |
3809 | ||
3810 | ||
3811 | \f | |
5500c422 GM |
3812 | /* Mark window cursors off for all windows in the window tree rooted |
3813 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3814 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3815 | the frame are cleared. */ | |
3816 | ||
3817 | void | |
3818 | mark_window_cursors_off (w) | |
3819 | struct window *w; | |
3820 | { | |
3821 | while (w) | |
3822 | { | |
3823 | if (!NILP (w->hchild)) | |
3824 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3825 | else if (!NILP (w->vchild)) | |
3826 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3827 | else | |
3828 | w->phys_cursor_on_p = 0; | |
3829 | ||
3830 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3831 | } | |
3832 | } | |
3833 | ||
3834 | ||
e9c195b1 | 3835 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
3836 | |
3837 | int | |
3838 | window_internal_height (w) | |
3839 | struct window *w; | |
3840 | { | |
3841 | int ht = XFASTINT (w->height); | |
3842 | ||
e9c195b1 GM |
3843 | if (!MINI_WINDOW_P (w)) |
3844 | { | |
3845 | if (!NILP (w->parent) | |
3846 | || !NILP (w->vchild) | |
3847 | || !NILP (w->hchild) | |
3848 | || !NILP (w->next) | |
3849 | || !NILP (w->prev) | |
3850 | || WINDOW_WANTS_MODELINE_P (w)) | |
3851 | --ht; | |
7ab12479 | 3852 | |
e9c195b1 GM |
3853 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
3854 | --ht; | |
3855 | } | |
7ab12479 JB |
3856 | |
3857 | return ht; | |
3858 | } | |
3859 | ||
535e0b8e JB |
3860 | |
3861 | /* Return the number of columns in W. | |
a3c87d4e | 3862 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3863 | separating W from the sibling to its right. */ |
5500c422 | 3864 | |
535e0b8e JB |
3865 | int |
3866 | window_internal_width (w) | |
3867 | struct window *w; | |
3868 | { | |
5500c422 | 3869 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3870 | int width = XINT (w->width); |
3871 | ||
a3c87d4e | 3872 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3873 | /* Scroll bars occupy a few columns. */ |
3874 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3875 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3876 | /* The column of `|' characters separating side-by-side windows | |
3877 | occupies one column only. */ | |
3878 | width -= 1; | |
3879 | ||
3880 | /* On window-systems, areas to the left and right of the window | |
3881 | are used to display bitmaps there. */ | |
3882 | if (FRAME_WINDOW_P (f)) | |
b46dfc64 | 3883 | width -= FRAME_FLAGS_AREA_COLS (f); |
111e5992 RS |
3884 | |
3885 | return width; | |
535e0b8e JB |
3886 | } |
3887 | ||
5500c422 GM |
3888 | \f |
3889 | /************************************************************************ | |
3890 | Window Scrolling | |
3891 | ***********************************************************************/ | |
535e0b8e | 3892 | |
5500c422 | 3893 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 3894 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
3895 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
3896 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3897 | means don't signal an error if we try to move over BEGV or ZV, | |
3898 | respectively. */ | |
7ab12479 | 3899 | |
101d1605 RS |
3900 | static void |
3901 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3902 | Lisp_Object window; |
3903 | int n; | |
101d1605 | 3904 | int whole; |
f8026fd8 | 3905 | int noerror; |
5500c422 GM |
3906 | { |
3907 | /* If we must, use the pixel-based version which is much slower than | |
3908 | the line-based one but can handle varying line heights. */ | |
3909 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3910 | window_scroll_pixel_based (window, n, whole, noerror); | |
3911 | else | |
3912 | window_scroll_line_based (window, n, whole, noerror); | |
3913 | } | |
3914 | ||
3915 | ||
3916 | /* Implementation of window_scroll that works based on pixel line | |
3917 | heights. See the comment of window_scroll for parameter | |
3918 | descriptions. */ | |
3919 | ||
3920 | static void | |
3921 | window_scroll_pixel_based (window, n, whole, noerror) | |
3922 | Lisp_Object window; | |
3923 | int n; | |
3924 | int whole; | |
3925 | int noerror; | |
3926 | { | |
3927 | struct it it; | |
3928 | struct window *w = XWINDOW (window); | |
3929 | struct text_pos start; | |
3930 | Lisp_Object tem; | |
3931 | int this_scroll_margin; | |
3932 | int preserve_y; | |
5cdb3cf3 MB |
3933 | /* True if we fiddled the window vscroll field without really scrolling. */ |
3934 | int vscrolled = 0; | |
5500c422 GM |
3935 | |
3936 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3937 | ||
3938 | /* If PT is not visible in WINDOW, move back one half of | |
288d4e06 GM |
3939 | the screen. Allow PT to be partially visible, otherwise |
3940 | something like (scroll-down 1) with PT in the line before | |
3941 | the partially visible one would recenter. */ | |
3942 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
3943 | if (NILP (tem)) |
3944 | { | |
3945 | /* Move backward half the height of the window. Performance note: | |
3946 | vmotion used here is about 10% faster, but would give wrong | |
3947 | results for variable height lines. */ | |
3948 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3949 | it.current_y = it.last_visible_y; | |
202379cf | 3950 | move_it_vertically (&it, - window_box_height (w) / 2); |
5500c422 GM |
3951 | |
3952 | /* The function move_iterator_vertically may move over more than | |
3953 | the specified y-distance. If it->w is small, e.g. a | |
3954 | mini-buffer window, we may end up in front of the window's | |
3955 | display area. This is the case when Start displaying at the | |
3956 | start of the line containing PT in this case. */ | |
3957 | if (it.current_y <= 0) | |
3958 | { | |
3959 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3960 | move_it_vertically (&it, 0); | |
3961 | it.current_y = 0; | |
3962 | } | |
3963 | ||
3964 | start = it.current.pos; | |
3965 | } | |
3966 | ||
3967 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3968 | point in the same window line as it is now, so get that line. */ | |
3969 | if (!NILP (Vscroll_preserve_screen_position)) | |
3970 | { | |
3971 | start_display (&it, w, start); | |
3972 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3973 | preserve_y = it.current_y; | |
3974 | } | |
3975 | else | |
3976 | preserve_y = -1; | |
3977 | ||
3978 | /* Move iterator it from start the specified distance forward or | |
3979 | backward. The result is the new window start. */ | |
3980 | start_display (&it, w, start); | |
3981 | if (whole) | |
3982 | { | |
202379cf | 3983 | int screen_full = (window_box_height (w) |
5500c422 | 3984 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); |
d4e7cf01 | 3985 | int dy = n * screen_full; |
d72340d4 GM |
3986 | |
3987 | /* Note that move_it_vertically always moves the iterator to the | |
3988 | start of a line. So, if the last line doesn't have a newline, | |
3989 | we would end up at the start of the line ending at ZV. */ | |
3990 | if (dy <= 0) | |
3991 | move_it_vertically_backward (&it, -dy); | |
3992 | else if (dy > 0) | |
3993 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, | |
3994 | MOVE_TO_POS | MOVE_TO_Y); | |
5500c422 GM |
3995 | } |
3996 | else | |
3997 | move_it_by_lines (&it, n, 1); | |
3998 | ||
3999 | /* End if we end up at ZV or BEGV. */ | |
4000 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
4001 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
4002 | { | |
5cdb3cf3 MB |
4003 | if (IT_CHARPOS (it) == ZV) |
4004 | { | |
4005 | if (it.current_y + it.max_ascent + it.max_descent | |
4006 | > it.last_visible_y) | |
a74eca50 GM |
4007 | { |
4008 | /* The last line was only partially visible, make it fully | |
4009 | visible. */ | |
4010 | w->vscroll = (it.last_visible_y | |
4011 | - it.current_y + it.max_ascent + it.max_descent); | |
4012 | adjust_glyphs (it.f); | |
4013 | } | |
5cdb3cf3 MB |
4014 | else if (noerror) |
4015 | return; | |
4016 | else | |
4017 | Fsignal (Qend_of_buffer, Qnil); | |
4018 | } | |
5500c422 | 4019 | else |
5cdb3cf3 MB |
4020 | { |
4021 | if (w->vscroll != 0) | |
4022 | /* The first line was only partially visible, make it fully | |
4023 | visible. */ | |
4024 | w->vscroll = 0; | |
4025 | else if (noerror) | |
4026 | return; | |
4027 | else | |
4028 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4029 | } | |
4030 | ||
4031 | /* If control gets here, then we vscrolled. */ | |
4032 | ||
4033 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4034 | ||
4035 | /* Don't try to change the window start below. */ | |
4036 | vscrolled = 1; | |
5500c422 GM |
4037 | } |
4038 | ||
5cdb3cf3 MB |
4039 | if (! vscrolled) |
4040 | { | |
4041 | /* Set the window start, and set up the window for redisplay. */ | |
4042 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), | |
4043 | w->buffer); | |
4044 | w->start_at_line_beg = Fbolp (); | |
4045 | w->update_mode_line = Qt; | |
4046 | XSETFASTINT (w->last_modified, 0); | |
4047 | XSETFASTINT (w->last_overlay_modified, 0); | |
4048 | /* Set force_start so that redisplay_window will run the | |
4049 | window-scroll-functions. */ | |
4050 | w->force_start = Qt; | |
4051 | } | |
5500c422 GM |
4052 | |
4053 | it.current_y = it.vpos = 0; | |
4054 | ||
4055 | /* Preserve the screen position if we must. */ | |
4056 | if (preserve_y >= 0) | |
4057 | { | |
4058 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
4059 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4060 | } | |
4061 | else | |
4062 | { | |
4063 | /* Move PT out of scroll margins. */ | |
4064 | this_scroll_margin = max (0, scroll_margin); | |
4065 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
4066 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
4067 | ||
4068 | if (n > 0) | |
4069 | { | |
4070 | /* We moved the window start towards ZV, so PT may be now | |
4071 | in the scroll margin at the top. */ | |
4072 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4073 | while (it.current_y < this_scroll_margin) | |
4074 | move_it_by_lines (&it, 1, 1); | |
4075 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4076 | } | |
4077 | else if (n < 0) | |
4078 | { | |
5cdb3cf3 MB |
4079 | int charpos, bytepos; |
4080 | ||
5500c422 GM |
4081 | /* We moved the window start towards BEGV, so PT may be now |
4082 | in the scroll margin at the bottom. */ | |
4083 | move_it_to (&it, PT, -1, | |
4084 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4085 | MOVE_TO_POS | MOVE_TO_Y); | |
5cdb3cf3 MB |
4086 | |
4087 | /* Save our position, in case it's correct. */ | |
4088 | charpos = IT_CHARPOS (it); | |
4089 | bytepos = IT_BYTEPOS (it); | |
5500c422 | 4090 | |
5cdb3cf3 MB |
4091 | /* See if point is on a partially visible line at the end. */ |
4092 | move_it_by_lines (&it, 1, 1); | |
4093 | if (it.current_y > it.last_visible_y) | |
4094 | /* The last line was only partially visible, so back up two | |
4095 | lines to make sure we're on a fully visible line. */ | |
4096 | { | |
4097 | move_it_by_lines (&it, -2, 0); | |
4098 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4099 | } | |
4100 | else | |
4101 | /* No, the position we saved is OK, so use it. */ | |
4102 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4103 | } |
4104 | } | |
4105 | } | |
4106 | ||
4107 | ||
4108 | /* Implementation of window_scroll that works based on screen lines. | |
4109 | See the comment of window_scroll for parameter descriptions. */ | |
4110 | ||
4111 | static void | |
4112 | window_scroll_line_based (window, n, whole, noerror) | |
4113 | Lisp_Object window; | |
4114 | int n; | |
4115 | int whole; | |
4116 | int noerror; | |
7ab12479 JB |
4117 | { |
4118 | register struct window *w = XWINDOW (window); | |
5500c422 | 4119 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4120 | register int pos, pos_byte; |
7ab12479 JB |
4121 | register int ht = window_internal_height (w); |
4122 | register Lisp_Object tem; | |
4123 | int lose; | |
5500c422 | 4124 | Lisp_Object bolp; |
345d45b2 | 4125 | int startpos; |
101d1605 RS |
4126 | struct position posit; |
4127 | int original_vpos; | |
4128 | ||
d4e7cf01 GM |
4129 | /* If scrolling screen-fulls, compute the number of lines to |
4130 | scroll from the window's height. */ | |
4131 | if (whole) | |
4132 | n *= max (1, ht - next_screen_context_lines); | |
4133 | ||
101d1605 RS |
4134 | startpos = marker_position (w->start); |
4135 | ||
4136 | posit = *compute_motion (startpos, 0, 0, 0, | |
4137 | PT, ht, 0, | |
4138 | window_internal_width (w), XINT (w->hscroll), | |
4139 | 0, w); | |
4140 | original_vpos = posit.vpos; | |
0a1f771a | 4141 | |
d834a2e9 | 4142 | XSETFASTINT (tem, PT); |
6ffdb539 | 4143 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4144 | |
265a9e55 | 4145 | if (NILP (tem)) |
7ab12479 | 4146 | { |
cd2be1dd | 4147 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4148 | startpos = PT; |
7ab12479 JB |
4149 | } |
4150 | ||
345d45b2 | 4151 | SET_PT (startpos); |
5ce7b543 | 4152 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4153 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4154 | pos = PT; |
b73ea88e | 4155 | pos_byte = PT_BYTE; |
7ab12479 | 4156 | bolp = Fbolp (); |
b73ea88e | 4157 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4158 | |
4159 | if (lose) | |
f8026fd8 JB |
4160 | { |
4161 | if (noerror) | |
4162 | return; | |
4163 | else | |
4164 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4165 | } | |
7ab12479 JB |
4166 | |
4167 | if (pos < ZV) | |
7ab12479 | 4168 | { |
0c7da84e RS |
4169 | int this_scroll_margin = scroll_margin; |
4170 | ||
4171 | /* Don't use a scroll margin that is negative or too large. */ | |
4172 | if (this_scroll_margin < 0) | |
4173 | this_scroll_margin = 0; | |
4174 | ||
4175 | if (XINT (w->height) < 4 * scroll_margin) | |
4176 | this_scroll_margin = XINT (w->height) / 4; | |
4177 | ||
b73ea88e | 4178 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4179 | w->start_at_line_beg = bolp; |
4180 | w->update_mode_line = Qt; | |
d834a2e9 | 4181 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4182 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4183 | /* Set force_start so that redisplay_window will run |
4184 | the window-scroll-functions. */ | |
4185 | w->force_start = Qt; | |
0c7da84e | 4186 | |
5500c422 | 4187 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4188 | { |
b73ea88e | 4189 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4190 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4191 | } |
101d1605 RS |
4192 | /* If we scrolled forward, put point enough lines down |
4193 | that it is outside the scroll margin. */ | |
4194 | else if (n > 0) | |
0c7da84e | 4195 | { |
101d1605 RS |
4196 | int top_margin; |
4197 | ||
4198 | if (this_scroll_margin > 0) | |
4199 | { | |
b73ea88e | 4200 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4201 | Fvertical_motion (make_number (this_scroll_margin), window); |
4202 | top_margin = PT; | |
4203 | } | |
4204 | else | |
4205 | top_margin = pos; | |
4206 | ||
4207 | if (top_margin <= opoint) | |
b73ea88e | 4208 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4209 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4210 | { |
b73ea88e | 4211 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4212 | Fvertical_motion (make_number (original_vpos), window); |
4213 | } | |
9317a85d | 4214 | else |
335406fc | 4215 | SET_PT (top_margin); |
0c7da84e | 4216 | } |
101d1605 | 4217 | else if (n < 0) |
7ab12479 | 4218 | { |
101d1605 RS |
4219 | int bottom_margin; |
4220 | ||
0c7da84e RS |
4221 | /* If we scrolled backward, put point near the end of the window |
4222 | but not within the scroll margin. */ | |
b73ea88e | 4223 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4224 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4225 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4226 | bottom_margin = PT; | |
4227 | else | |
4228 | bottom_margin = PT + 1; | |
4229 | ||
4230 | if (bottom_margin > opoint) | |
b73ea88e | 4231 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4232 | else |
101d1605 | 4233 | { |
5500c422 | 4234 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4235 | { |
b73ea88e | 4236 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4237 | Fvertical_motion (make_number (original_vpos), window); |
4238 | } | |
4239 | else | |
4240 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4241 | } |
7ab12479 JB |
4242 | } |
4243 | } | |
4244 | else | |
f8026fd8 JB |
4245 | { |
4246 | if (noerror) | |
4247 | return; | |
4248 | else | |
4249 | Fsignal (Qend_of_buffer, Qnil); | |
4250 | } | |
7ab12479 | 4251 | } |
5500c422 GM |
4252 | |
4253 | ||
4254 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4255 | screen-full which is defined as the height of the window minus | |
4256 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4257 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4258 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4259 | |
4260 | static void | |
4261 | scroll_command (n, direction) | |
5500c422 | 4262 | Lisp_Object n; |
7ab12479 JB |
4263 | int direction; |
4264 | { | |
d4e7cf01 | 4265 | int count = BINDING_STACK_SIZE (); |
7ab12479 | 4266 | |
5500c422 GM |
4267 | xassert (abs (direction) == 1); |
4268 | ||
4269 | /* If selected window's buffer isn't current, make it current for | |
4270 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4271 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4272 | { |
4273 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4274 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4275 | |
4276 | /* Make redisplay consider other windows than just selected_window. */ | |
4277 | ++windows_or_buffers_changed; | |
95605e15 | 4278 | } |
7ab12479 | 4279 | |
265a9e55 | 4280 | if (NILP (n)) |
d4e7cf01 | 4281 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4282 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4283 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4284 | else |
4285 | { | |
4286 | n = Fprefix_numeric_value (n); | |
101d1605 | 4287 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4288 | } |
95605e15 JB |
4289 | |
4290 | unbind_to (count, Qnil); | |
7ab12479 JB |
4291 | } |
4292 | ||
4293 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
fdb82f93 PJ |
4294 | doc: /* Scroll text of current window upward ARG lines; or near full screen if no ARG. |
4295 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4296 | Negative ARG means scroll downward. | |
4297 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4298 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4299 | (arg) | |
413430c5 | 4300 | Lisp_Object arg; |
7ab12479 | 4301 | { |
413430c5 | 4302 | scroll_command (arg, 1); |
7ab12479 JB |
4303 | return Qnil; |
4304 | } | |
4305 | ||
4306 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
fdb82f93 PJ |
4307 | doc: /* Scroll text of current window down ARG lines; or near full screen if no ARG. |
4308 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4309 | Negative ARG means scroll upward. | |
4310 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4311 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4312 | (arg) | |
413430c5 | 4313 | Lisp_Object arg; |
7ab12479 | 4314 | { |
413430c5 | 4315 | scroll_command (arg, -1); |
7ab12479 JB |
4316 | return Qnil; |
4317 | } | |
ccd0664b RS |
4318 | \f |
4319 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 PJ |
4320 | doc: /* Return the other window for \"other window scroll\" commands. |
4321 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4322 | specifies the window. | |
4323 | If `other-window-scroll-buffer' is non-nil, a window | |
4324 | showing that buffer is used. */) | |
4325 | () | |
7ab12479 | 4326 | { |
ccd0664b | 4327 | Lisp_Object window; |
7ab12479 JB |
4328 | |
4329 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4330 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4331 | window = Vminibuf_scroll_window; |
4332 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4333 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4334 | { |
4335 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4336 | if (NILP (window)) |
53f76081 | 4337 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4338 | } |
4339 | else | |
dbc4e1c1 JB |
4340 | { |
4341 | /* Nothing specified; look for a neighboring window on the same | |
4342 | frame. */ | |
4343 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4344 | ||
4345 | if (EQ (window, selected_window)) | |
4346 | /* That didn't get us anywhere; look for a window on another | |
4347 | visible frame. */ | |
4348 | do | |
4349 | window = Fnext_window (window, Qnil, Qt); | |
4350 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4351 | && ! EQ (window, selected_window)); | |
4352 | } | |
4353 | ||
605be8af | 4354 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
4355 | |
4356 | if (EQ (window, selected_window)) | |
4357 | error ("There is no other window"); | |
4358 | ||
ccd0664b RS |
4359 | return window; |
4360 | } | |
4361 | ||
4362 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4363 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4364 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4365 | The next window is the one below the current one; or the one at the top | |
4366 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4367 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4368 | When calling from a program, supply as argument a number, nil, or `-'. | |
4369 | ||
4370 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4371 | specifies the window to scroll. | |
4372 | If `other-window-scroll-buffer' is non-nil, scroll the window | |
4373 | showing that buffer, popping the buffer up if necessary. */) | |
4374 | (arg) | |
d4e7cf01 | 4375 | Lisp_Object arg; |
ccd0664b | 4376 | { |
d4e7cf01 GM |
4377 | Lisp_Object window; |
4378 | struct window *w; | |
4379 | int count = BINDING_STACK_SIZE (); | |
ccd0664b RS |
4380 | |
4381 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4382 | w = XWINDOW (window); |
7ab12479 JB |
4383 | |
4384 | /* Don't screw up if window_scroll gets an error. */ | |
4385 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4386 | ++windows_or_buffers_changed; |
7ab12479 JB |
4387 | |
4388 | Fset_buffer (w->buffer); | |
4389 | SET_PT (marker_position (w->pointm)); | |
4390 | ||
413430c5 | 4391 | if (NILP (arg)) |
d4e7cf01 | 4392 | window_scroll (window, 1, 1, 1); |
413430c5 | 4393 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4394 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4395 | else |
4396 | { | |
413430c5 EN |
4397 | if (CONSP (arg)) |
4398 | arg = Fcar (arg); | |
4399 | CHECK_NUMBER (arg, 0); | |
101d1605 | 4400 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4401 | } |
4402 | ||
b73ea88e | 4403 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4404 | unbind_to (count, Qnil); |
7ab12479 JB |
4405 | |
4406 | return Qnil; | |
4407 | } | |
4408 | \f | |
644b477c | 4409 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
fdb82f93 PJ |
4410 | doc: /* Scroll selected window display ARG columns left. |
4411 | Default for ARG is window width minus 2. */) | |
4412 | (arg) | |
7ab12479 JB |
4413 | register Lisp_Object arg; |
4414 | { | |
c67fa410 GM |
4415 | Lisp_Object result; |
4416 | int hscroll; | |
4417 | struct window *w = XWINDOW (selected_window); | |
4418 | ||
265a9e55 | 4419 | if (NILP (arg)) |
c67fa410 | 4420 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4421 | else |
4422 | arg = Fprefix_numeric_value (arg); | |
4423 | ||
c67fa410 GM |
4424 | hscroll = XINT (w->hscroll) + XINT (arg); |
4425 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4426 | ||
f5686fbd | 4427 | if (interactive_p (0)) |
c67fa410 GM |
4428 | w->min_hscroll = w->hscroll; |
4429 | ||
4430 | return result; | |
7ab12479 JB |
4431 | } |
4432 | ||
644b477c | 4433 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
fdb82f93 PJ |
4434 | doc: /* Scroll selected window display ARG columns right. |
4435 | Default for ARG is window width minus 2. */) | |
4436 | (arg) | |
7ab12479 JB |
4437 | register Lisp_Object arg; |
4438 | { | |
c67fa410 GM |
4439 | Lisp_Object result; |
4440 | int hscroll; | |
4441 | struct window *w = XWINDOW (selected_window); | |
4442 | ||
265a9e55 | 4443 | if (NILP (arg)) |
c67fa410 | 4444 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4445 | else |
4446 | arg = Fprefix_numeric_value (arg); | |
4447 | ||
c67fa410 GM |
4448 | hscroll = XINT (w->hscroll) - XINT (arg); |
4449 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4450 | ||
f5686fbd | 4451 | if (interactive_p (0)) |
c67fa410 GM |
4452 | w->min_hscroll = w->hscroll; |
4453 | ||
4454 | return result; | |
7ab12479 JB |
4455 | } |
4456 | ||
12c8b416 GM |
4457 | /* Value is the number of lines actually displayed in window W, |
4458 | as opposed to its height. */ | |
4459 | ||
4460 | static int | |
4461 | displayed_window_lines (w) | |
4462 | struct window *w; | |
4463 | { | |
4464 | struct it it; | |
4465 | struct text_pos start; | |
4466 | int height = window_box_height (w); | |
4467 | struct buffer *old_buffer; | |
4468 | int bottom_y; | |
4469 | ||
4470 | if (XBUFFER (w->buffer) != current_buffer) | |
4471 | { | |
4472 | old_buffer = current_buffer; | |
4473 | set_buffer_internal (XBUFFER (w->buffer)); | |
4474 | } | |
4475 | else | |
4476 | old_buffer = NULL; | |
4477 | ||
521b203e GM |
4478 | /* In case W->start is out of the accessible range, do something |
4479 | reasonable. This happens in Info mode when Info-scroll-down | |
4480 | calls (recenter -1) while W->start is 1. */ | |
4481 | if (XMARKER (w->start)->charpos < BEGV) | |
4482 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4483 | else if (XMARKER (w->start)->charpos > ZV) | |
4484 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4485 | else | |
4486 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4487 | ||
12c8b416 GM |
4488 | start_display (&it, w, start); |
4489 | move_it_vertically (&it, height); | |
c8bc6f65 | 4490 | bottom_y = line_bottom_y (&it); |
12c8b416 GM |
4491 | |
4492 | /* Add in empty lines at the bottom of the window. */ | |
4493 | if (bottom_y < height) | |
4494 | { | |
c8bc6f65 GM |
4495 | int uy = CANON_Y_UNIT (it.f); |
4496 | it.vpos += (height - bottom_y + uy - 1) / uy; | |
12c8b416 GM |
4497 | } |
4498 | ||
c8bc6f65 GM |
4499 | if (old_buffer) |
4500 | set_buffer_internal (old_buffer); | |
4501 | ||
12c8b416 GM |
4502 | return it.vpos; |
4503 | } | |
4504 | ||
4505 | ||
7ab12479 | 4506 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
4507 | doc: /* Center point in window and redisplay frame. |
4508 | With prefix argument ARG, recenter putting point on screen line ARG | |
4509 | relative to the current window. If ARG is negative, it counts up from the | |
4510 | bottom of the window. (ARG should be less than the height of the window.) | |
4511 | ||
4512 | If ARG is omitted or nil, erase the entire frame and then | |
4513 | redraw with point in the center of the current window. | |
4514 | Just C-u as prefix means put point in the center of the window | |
4515 | and redisplay normally--don't erase and redraw the frame. */) | |
4516 | (arg) | |
413430c5 | 4517 | register Lisp_Object arg; |
7ab12479 | 4518 | { |
6df47b59 | 4519 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
4520 | struct buffer *buf = XBUFFER (w->buffer); |
4521 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
4522 | int center_p = 0; |
4523 | int charpos, bytepos; | |
7ab12479 | 4524 | |
413430c5 | 4525 | if (NILP (arg)) |
7ab12479 | 4526 | { |
f02d6d5c KH |
4527 | int i; |
4528 | ||
4529 | /* Invalidate pixel data calculated for all compositions. */ | |
4530 | for (i = 0; i < n_compositions; i++) | |
4531 | composition_table[i]->font = NULL; | |
7ab12479 | 4532 | |
527b6458 | 4533 | Fredraw_frame (w->frame); |
44fa5b1e | 4534 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 4535 | center_p = 1; |
7ab12479 | 4536 | } |
413430c5 | 4537 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 4538 | center_p = 1; |
7ab12479 JB |
4539 | else |
4540 | { | |
413430c5 EN |
4541 | arg = Fprefix_numeric_value (arg); |
4542 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
4543 | } |
4544 | ||
478292ed | 4545 | set_buffer_internal (buf); |
7ab12479 | 4546 | |
521b203e | 4547 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
4548 | have variable-height lines and centering point on the basis of |
4549 | line counts would lead to strange effects. */ | |
521b203e | 4550 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 4551 | { |
6df47b59 GM |
4552 | if (center_p) |
4553 | { | |
521b203e GM |
4554 | struct it it; |
4555 | struct text_pos pt; | |
4556 | ||
4557 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4558 | start_display (&it, w, pt); | |
202379cf | 4559 | move_it_vertically (&it, - window_box_height (w) / 2); |
521b203e GM |
4560 | charpos = IT_CHARPOS (it); |
4561 | bytepos = IT_BYTEPOS (it); | |
6df47b59 GM |
4562 | } |
4563 | else if (XINT (arg) < 0) | |
4564 | { | |
521b203e GM |
4565 | struct it it; |
4566 | struct text_pos pt; | |
d466fa4d | 4567 | int y0, y1, h, nlines; |
521b203e GM |
4568 | |
4569 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4570 | start_display (&it, w, pt); | |
4571 | y0 = it.current_y; | |
4572 | ||
d466fa4d | 4573 | /* The amount of pixels we have to move back is the window |
521b203e GM |
4574 | height minus what's displayed in the line containing PT, |
4575 | and the lines below. */ | |
d466fa4d GM |
4576 | nlines = - XINT (arg) - 1; |
4577 | move_it_by_lines (&it, nlines, 1); | |
4578 | ||
521b203e GM |
4579 | y1 = it.current_y - y0; |
4580 | h = line_bottom_y (&it) - y1; | |
d466fa4d GM |
4581 | |
4582 | /* If we can't move down NLINES lines because we hit | |
4583 | the end of the buffer, count in some empty lines. */ | |
4584 | if (it.vpos < nlines) | |
4585 | y1 += (nlines - it.vpos) * CANON_Y_UNIT (it.f); | |
4586 | ||
521b203e GM |
4587 | y0 = it.last_visible_y - y1 - h; |
4588 | ||
4589 | start_display (&it, w, pt); | |
4590 | move_it_vertically (&it, - y0); | |
4591 | charpos = IT_CHARPOS (it); | |
4592 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 4593 | } |
521b203e GM |
4594 | else |
4595 | { | |
4596 | struct position pos; | |
4597 | pos = *vmotion (PT, - XINT (arg), w); | |
4598 | charpos = pos.bufpos; | |
4599 | bytepos = pos.bytepos; | |
4600 | } | |
4601 | } | |
4602 | else | |
4603 | { | |
4604 | struct position pos; | |
4605 | int ht = window_internal_height (w); | |
4606 | ||
4607 | if (center_p) | |
4608 | arg = make_number (ht / 2); | |
4609 | else if (XINT (arg) < 0) | |
4610 | arg = make_number (XINT (arg) + ht); | |
6df47b59 GM |
4611 | |
4612 | pos = *vmotion (PT, - XINT (arg), w); | |
4613 | charpos = pos.bufpos; | |
4614 | bytepos = pos.bytepos; | |
4615 | } | |
4616 | ||
4617 | /* Set the new window start. */ | |
4618 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 4619 | w->window_end_valid = Qnil; |
7ab12479 | 4620 | w->force_start = Qt; |
6df47b59 GM |
4621 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
4622 | w->start_at_line_beg = Qt; | |
4623 | else | |
4624 | w->start_at_line_beg = Qnil; | |
4625 | ||
478292ed | 4626 | set_buffer_internal (obuf); |
7ab12479 JB |
4627 | return Qnil; |
4628 | } | |
b7617575 GM |
4629 | |
4630 | ||
81fe0836 | 4631 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
4632 | 0, 1, 0, |
4633 | doc: /* Return the height in lines of the text display area of WINDOW. | |
4634 | This doesn't include the mode-line (or header-line if any) or any | |
4635 | partial-height lines in the text display area. */) | |
4636 | (window) | |
81fe0836 MB |
4637 | Lisp_Object window; |
4638 | { | |
4639 | struct window *w = decode_window (window); | |
4640 | int pixel_height = window_box_height (w); | |
4641 | int line_height = pixel_height / CANON_Y_UNIT (XFRAME (w->frame)); | |
4642 | return make_number (line_height); | |
4643 | } | |
4644 | ||
4645 | ||
7ab12479 JB |
4646 | \f |
4647 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
4648 | 1, 1, "P", |
4649 | doc: /* Position point relative to window. | |
4650 | With no argument, position point at center of window. | |
4651 | An argument specifies vertical position within the window; | |
4652 | zero means top of window, negative means relative to bottom of window. */) | |
4653 | (arg) | |
b7617575 | 4654 | Lisp_Object arg; |
7ab12479 | 4655 | { |
b7617575 GM |
4656 | struct window *w = XWINDOW (selected_window); |
4657 | int lines, start; | |
540b6aa0 | 4658 | Lisp_Object window; |
7ab12479 | 4659 | |
b7617575 | 4660 | window = selected_window; |
7ab12479 JB |
4661 | start = marker_position (w->start); |
4662 | if (start < BEGV || start > ZV) | |
4663 | { | |
b7617575 | 4664 | int height = window_internal_height (w); |
cd2be1dd | 4665 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4666 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4667 | w->start_at_line_beg = Fbolp (); |
4668 | w->force_start = Qt; | |
4669 | } | |
4670 | else | |
b73ea88e | 4671 | Fgoto_char (w->start); |
7ab12479 | 4672 | |
b7617575 GM |
4673 | lines = displayed_window_lines (w); |
4674 | if (NILP (arg)) | |
4675 | XSETFASTINT (arg, lines / 2); | |
4676 | else | |
4677 | { | |
4678 | arg = Fprefix_numeric_value (arg); | |
4679 | if (XINT (arg) < 0) | |
4680 | XSETINT (arg, XINT (arg) + lines); | |
4681 | } | |
4682 | ||
c8bc6f65 | 4683 | /* Skip past a partially visible first line. */ |
163784df | 4684 | if (w->vscroll) |
163784df MB |
4685 | XSETINT (arg, XINT (arg) + 1); |
4686 | ||
540b6aa0 | 4687 | return Fvertical_motion (arg, window); |
7ab12479 | 4688 | } |
5500c422 GM |
4689 | |
4690 | ||
7ab12479 | 4691 | \f |
5500c422 GM |
4692 | /*********************************************************************** |
4693 | Window Configuration | |
4694 | ***********************************************************************/ | |
4695 | ||
7ab12479 JB |
4696 | struct save_window_data |
4697 | { | |
f5ccc0cc | 4698 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4699 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4700 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4701 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4702 | Lisp_Object selected_frame; |
7ab12479 JB |
4703 | Lisp_Object current_window; |
4704 | Lisp_Object current_buffer; | |
4705 | Lisp_Object minibuf_scroll_window; | |
4706 | Lisp_Object root_window; | |
bdc727bf | 4707 | Lisp_Object focus_frame; |
756b6edc RS |
4708 | /* Record the values of window-min-width and window-min-height |
4709 | so that window sizes remain consistent with them. */ | |
4710 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4711 | /* A vector, each of whose elements is a struct saved_window |
4712 | for one window. */ | |
7ab12479 JB |
4713 | Lisp_Object saved_windows; |
4714 | }; | |
ff06df24 | 4715 | |
cbff28e8 | 4716 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 4717 | struct saved_window |
ea68264b GM |
4718 | { |
4719 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
4720 | EMACS_INT size_from_Lisp_Vector_struct; | |
4721 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 4722 | |
ea68264b GM |
4723 | Lisp_Object window; |
4724 | Lisp_Object buffer, start, pointm, mark; | |
4725 | Lisp_Object left, top, width, height, hscroll, min_hscroll; | |
4726 | Lisp_Object parent, prev; | |
4727 | Lisp_Object start_at_line_beg; | |
4728 | Lisp_Object display_table; | |
4729 | Lisp_Object orig_top, orig_height; | |
4730 | }; | |
4731 | ||
4732 | #define SAVED_WINDOW_VECTOR_SIZE 17 /* Arg to Fmake_vector */ | |
7ab12479 JB |
4733 | |
4734 | #define SAVED_WINDOW_N(swv,n) \ | |
4735 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4736 | ||
4737 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
4738 | doc: /* Return t if OBJECT is a window-configuration object. */) |
4739 | (object) | |
413430c5 | 4740 | Lisp_Object object; |
7ab12479 | 4741 | { |
413430c5 | 4742 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4743 | return Qt; |
4744 | return Qnil; | |
4745 | } | |
4746 | ||
3f8ab7bd | 4747 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
4748 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
4749 | (config) | |
3f8ab7bd RS |
4750 | Lisp_Object config; |
4751 | { | |
4752 | register struct save_window_data *data; | |
4753 | struct Lisp_Vector *saved_windows; | |
4754 | ||
4755 | if (! WINDOW_CONFIGURATIONP (config)) | |
4756 | wrong_type_argument (Qwindow_configuration_p, config); | |
4757 | ||
4758 | data = (struct save_window_data *) XVECTOR (config); | |
4759 | saved_windows = XVECTOR (data->saved_windows); | |
4760 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4761 | } | |
4762 | ||
d5b2799e | 4763 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
4764 | Sset_window_configuration, 1, 1, 0, |
4765 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
4766 | CONFIGURATION must be a value previously returned | |
4767 | by `current-window-configuration' (which see). | |
4768 | If CONFIGURATION was made from a frame that is now deleted, | |
4769 | only frame-independent values can be restored. In this case, | |
4770 | the return value is nil. Otherwise the value is t. */) | |
4771 | (configuration) | |
2f83aebe | 4772 | Lisp_Object configuration; |
7ab12479 | 4773 | { |
7ab12479 JB |
4774 | register struct save_window_data *data; |
4775 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4776 | Lisp_Object new_current_buffer; |
fd482be5 | 4777 | Lisp_Object frame; |
44fa5b1e | 4778 | FRAME_PTR f; |
d2b35234 | 4779 | int old_point = -1; |
7ab12479 | 4780 | |
017b2bad | 4781 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4782 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4783 | |
2f83aebe | 4784 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4785 | saved_windows = XVECTOR (data->saved_windows); |
4786 | ||
7ab12479 | 4787 | new_current_buffer = data->current_buffer; |
265a9e55 | 4788 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4789 | new_current_buffer = Qnil; |
d2b35234 RS |
4790 | else |
4791 | { | |
4792 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4793 | old_point = PT; | |
4794 | } | |
7ab12479 | 4795 | |
fd482be5 JB |
4796 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4797 | f = XFRAME (frame); | |
aa35ba9e | 4798 | |
fd482be5 JB |
4799 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4800 | However, there is other stuff we should still try to do below. */ | |
4801 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4802 | { |
fd482be5 JB |
4803 | register struct window *w; |
4804 | register struct saved_window *p; | |
5500c422 GM |
4805 | struct window *root_window; |
4806 | struct window **leaf_windows; | |
4807 | int n_leaf_windows; | |
c4280705 | 4808 | int k, i, n; |
fd482be5 JB |
4809 | |
4810 | /* If the frame has been resized since this window configuration was | |
4811 | made, we change the frame to the size specified in the | |
4812 | configuration, restore the configuration, and then resize it | |
4813 | back. We keep track of the prevailing height in these variables. */ | |
4814 | int previous_frame_height = FRAME_HEIGHT (f); | |
4815 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4816 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4817 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4818 | |
d2b35234 RS |
4819 | /* The mouse highlighting code could get screwed up |
4820 | if it runs during this. */ | |
4821 | BLOCK_INPUT; | |
4822 | ||
fd482be5 JB |
4823 | if (XFASTINT (data->frame_height) != previous_frame_height |
4824 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4825 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4826 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4827 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4828 | if (XFASTINT (data->frame_menu_bar_lines) |
4829 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4830 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4831 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4832 | if (XFASTINT (data->frame_tool_bar_lines) |
4833 | != previous_frame_tool_bar_lines) | |
4834 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4835 | #endif |
217f2871 | 4836 | #endif |
fd482be5 | 4837 | |
719eaeb1 GM |
4838 | /* "Swap out" point from the selected window |
4839 | into its buffer. We do this now, before | |
4840 | restoring the window contents, and prevent it from | |
4841 | being done later on when we select a new window. */ | |
596ae0cf RS |
4842 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4843 | { | |
4844 | w = XWINDOW (selected_window); | |
4845 | set_marker_both (w->pointm, | |
4846 | w->buffer, | |
4847 | BUF_PT (XBUFFER (w->buffer)), | |
4848 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4849 | } | |
4850 | ||
fd482be5 | 4851 | windows_or_buffers_changed++; |
29aeee73 | 4852 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4853 | |
5500c422 GM |
4854 | /* Problem: Freeing all matrices and later allocating them again |
4855 | is a serious redisplay flickering problem. What we would | |
4856 | really like to do is to free only those matrices not reused | |
4857 | below. */ | |
4858 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4859 | leaf_windows | |
4860 | = (struct window **) alloca (count_windows (root_window) | |
4861 | * sizeof (struct window *)); | |
4862 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4863 | ||
756b6edc RS |
4864 | /* Temporarily avoid any problems with windows that are smaller |
4865 | than they are supposed to be. */ | |
4866 | window_min_height = 1; | |
4867 | window_min_width = 1; | |
4868 | ||
fd482be5 JB |
4869 | /* Kludge Alert! |
4870 | Mark all windows now on frame as "deleted". | |
4871 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4872 | |
fd482be5 JB |
4873 | Save their current buffers in their height fields, since we may |
4874 | need it later, if a buffer saved in the configuration is now | |
4875 | dead. */ | |
4876 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4877 | ||
4878 | for (k = 0; k < saved_windows->size; k++) | |
4879 | { | |
4880 | p = SAVED_WINDOW_N (saved_windows, k); | |
4881 | w = XWINDOW (p->window); | |
4882 | w->next = Qnil; | |
7ab12479 | 4883 | |
fd482be5 JB |
4884 | if (!NILP (p->parent)) |
4885 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4886 | XFASTINT (p->parent))->window; | |
4887 | else | |
4888 | w->parent = Qnil; | |
7ab12479 | 4889 | |
fd482be5 | 4890 | if (!NILP (p->prev)) |
7ab12479 | 4891 | { |
fd482be5 JB |
4892 | w->prev = SAVED_WINDOW_N (saved_windows, |
4893 | XFASTINT (p->prev))->window; | |
4894 | XWINDOW (w->prev)->next = p->window; | |
4895 | } | |
4896 | else | |
4897 | { | |
4898 | w->prev = Qnil; | |
4899 | if (!NILP (w->parent)) | |
4900 | { | |
4901 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4902 | { | |
4903 | XWINDOW (w->parent)->vchild = p->window; | |
4904 | XWINDOW (w->parent)->hchild = Qnil; | |
4905 | } | |
4906 | else | |
4907 | { | |
4908 | XWINDOW (w->parent)->hchild = p->window; | |
4909 | XWINDOW (w->parent)->vchild = Qnil; | |
4910 | } | |
4911 | } | |
4912 | } | |
4913 | ||
4914 | /* If we squirreled away the buffer in the window's height, | |
4915 | restore it now. */ | |
017b2bad | 4916 | if (BUFFERP (w->height)) |
fd482be5 JB |
4917 | w->buffer = w->height; |
4918 | w->left = p->left; | |
4919 | w->top = p->top; | |
4920 | w->width = p->width; | |
4921 | w->height = p->height; | |
4922 | w->hscroll = p->hscroll; | |
ea68264b | 4923 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 4924 | w->display_table = p->display_table; |
a1d58e5b GM |
4925 | w->orig_top = p->orig_top; |
4926 | w->orig_height = p->orig_height; | |
d834a2e9 | 4927 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4928 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4929 | |
4930 | /* Reinstall the saved buffer and pointers into it. */ | |
4931 | if (NILP (p->buffer)) | |
4932 | w->buffer = p->buffer; | |
4933 | else | |
4934 | { | |
4935 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4936 | /* If saved buffer is alive, install it. */ | |
4937 | { | |
4938 | w->buffer = p->buffer; | |
4939 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4940 | set_marker_restricted (w->start, p->start, w->buffer); |
4941 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4942 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4943 | p->mark, w->buffer); |
fd482be5 JB |
4944 | |
4945 | /* As documented in Fcurrent_window_configuration, don't | |
4946 | save the location of point in the buffer which was current | |
4947 | when the window configuration was recorded. */ | |
6b54027b RS |
4948 | if (!EQ (p->buffer, new_current_buffer) |
4949 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4950 | Fgoto_char (w->pointm); |
4951 | } | |
52a68e98 RS |
4952 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4953 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4954 | { |
fd482be5 JB |
4955 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4956 | /* This will set the markers to beginning of visible | |
4957 | range. */ | |
4958 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4959 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4960 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4961 | } |
4962 | else | |
fd482be5 | 4963 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4964 | are real. */ |
7ab12479 | 4965 | { |
fd482be5 JB |
4966 | /* Set window markers at start of visible range. */ |
4967 | if (XMARKER (w->start)->buffer == 0) | |
4968 | set_marker_restricted (w->start, make_number (0), | |
4969 | w->buffer); | |
4970 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4971 | set_marker_restricted_both (w->pointm, w->buffer, |
4972 | BUF_PT (XBUFFER (w->buffer)), | |
4973 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4974 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4975 | } |
4976 | } | |
4977 | } | |
9ace597f | 4978 | |
fd482be5 | 4979 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
4980 | /* Prevent "swapping out point" in the old selected window |
4981 | using the buffer that has been restored into it. | |
4982 | That swapping out has already been done, | |
4983 | near the beginning of this function. */ | |
4984 | selected_window = Qnil; | |
fd482be5 | 4985 | Fselect_window (data->current_window); |
396a830c RS |
4986 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
4987 | = selected_window; | |
7ab12479 | 4988 | |
db269683 | 4989 | if (NILP (data->focus_frame) |
017b2bad | 4990 | || (FRAMEP (data->focus_frame) |
db269683 JB |
4991 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
4992 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 4993 | |
fd482be5 JB |
4994 | #if 0 /* I don't understand why this is needed, and it causes problems |
4995 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 4996 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 4997 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 4998 | 0, 0); |
fd482be5 JB |
4999 | #endif |
5000 | ||
5001 | /* Set the screen height to the value it had before this function. */ | |
5002 | if (previous_frame_height != FRAME_HEIGHT (f) | |
5003 | || previous_frame_width != FRAME_WIDTH (f)) | |
5004 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 5005 | 0, 0, 0); |
e3678b64 | 5006 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5007 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5008 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5009 | make_number (0)); | |
4314246f | 5010 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5011 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5012 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5013 | make_number (0)); | |
4314246f | 5014 | #endif |
217f2871 | 5015 | #endif |
d2b35234 | 5016 | |
5500c422 | 5017 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5018 | for (i = n = 0; i < n_leaf_windows; ++i) |
5019 | { | |
5020 | if (NILP (leaf_windows[i]->buffer)) | |
5021 | { | |
5022 | /* Assert it's not reused as a combination. */ | |
5023 | xassert (NILP (leaf_windows[i]->hchild) | |
5024 | && NILP (leaf_windows[i]->vchild)); | |
5025 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5026 | } |
5027 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5028 | ++n; | |
5029 | } | |
5030 | ||
5031 | /* If more than one window shows the new and old current buffer, | |
5032 | don't try to preserve point in that buffer. */ | |
5033 | if (old_point > 0 && n > 1) | |
5034 | old_point = -1; | |
5500c422 GM |
5035 | |
5036 | adjust_glyphs (f); | |
5037 | ||
d2b35234 | 5038 | UNBLOCK_INPUT; |
756b6edc | 5039 | |
478292ed RS |
5040 | /* Fselect_window will have made f the selected frame, so we |
5041 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5042 | selected window too, but that doesn't make the call to | |
5043 | Fselect_window above totally superfluous; it still sets f's | |
5044 | selected window. */ | |
5045 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5046 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5047 | |
5048 | if (! NILP (Vwindow_configuration_change_hook) | |
5049 | && ! NILP (Vrun_hooks)) | |
5050 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5051 | } | |
bdc727bf JB |
5052 | |
5053 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
5054 | { |
5055 | Fset_buffer (new_current_buffer); | |
5056 | ||
5057 | /* If the buffer that is current now is the same | |
5058 | that was current before setting the window configuration, | |
5059 | don't alter its PT. */ | |
5060 | if (old_point >= 0) | |
5061 | SET_PT (old_point); | |
5062 | } | |
bdc727bf | 5063 | |
478292ed RS |
5064 | /* Restore the minimum heights recorded in the configuration. */ |
5065 | window_min_height = XINT (data->min_height); | |
5066 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5067 | |
478292ed | 5068 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 5069 | |
3f8ab7bd | 5070 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5071 | } |
5072 | ||
44fa5b1e | 5073 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5074 | by setting their buffers to nil. */ |
5075 | ||
fd482be5 | 5076 | void |
7ab12479 JB |
5077 | delete_all_subwindows (w) |
5078 | register struct window *w; | |
5079 | { | |
265a9e55 | 5080 | if (!NILP (w->next)) |
7ab12479 | 5081 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5082 | if (!NILP (w->vchild)) |
7ab12479 | 5083 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5084 | if (!NILP (w->hchild)) |
7ab12479 | 5085 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
5086 | |
5087 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
5088 | ||
86e48436 RS |
5089 | if (!NILP (w->buffer)) |
5090 | unshow_buffer (w); | |
5091 | ||
605be8af JB |
5092 | /* We set all three of these fields to nil, to make sure that we can |
5093 | distinguish this dead window from any live window. Live leaf | |
5094 | windows will have buffer set, and combination windows will have | |
5095 | vchild or hchild set. */ | |
5096 | w->buffer = Qnil; | |
5097 | w->vchild = Qnil; | |
5098 | w->hchild = Qnil; | |
acf70840 GM |
5099 | |
5100 | Vwindow_list = Qnil; | |
7ab12479 JB |
5101 | } |
5102 | \f | |
5103 | static int | |
5104 | count_windows (window) | |
5105 | register struct window *window; | |
5106 | { | |
5107 | register int count = 1; | |
265a9e55 | 5108 | if (!NILP (window->next)) |
7ab12479 | 5109 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5110 | if (!NILP (window->vchild)) |
7ab12479 | 5111 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5112 | if (!NILP (window->hchild)) |
7ab12479 JB |
5113 | count += count_windows (XWINDOW (window->hchild)); |
5114 | return count; | |
5115 | } | |
5116 | ||
5500c422 GM |
5117 | |
5118 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
5119 | Value is last index + 1. */ | |
5120 | ||
5121 | static int | |
5122 | get_leaf_windows (w, flat, i) | |
5123 | struct window *w; | |
5124 | struct window **flat; | |
5125 | int i; | |
5126 | { | |
5127 | while (w) | |
5128 | { | |
5129 | if (!NILP (w->hchild)) | |
5130 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5131 | else if (!NILP (w->vchild)) | |
5132 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
5133 | else | |
5134 | flat[i++] = w; | |
5135 | ||
5136 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5137 | } | |
5138 | ||
5139 | return i; | |
5140 | } | |
5141 | ||
5142 | ||
5143 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5144 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5145 | can be returned. */ | |
5146 | ||
5147 | struct glyph * | |
5148 | get_phys_cursor_glyph (w) | |
5149 | struct window *w; | |
5150 | { | |
5151 | struct glyph_row *row; | |
5152 | struct glyph *glyph; | |
5153 | ||
5154 | if (w->phys_cursor.vpos >= 0 | |
5155 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5156 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5157 | row->enabled_p) | |
5158 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5159 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5160 | else | |
5161 | glyph = NULL; | |
5162 | ||
5163 | return glyph; | |
5164 | } | |
5165 | ||
5166 | ||
7ab12479 JB |
5167 | static int |
5168 | save_window_save (window, vector, i) | |
5169 | Lisp_Object window; | |
5170 | struct Lisp_Vector *vector; | |
5171 | int i; | |
5172 | { | |
5173 | register struct saved_window *p; | |
5174 | register struct window *w; | |
5175 | register Lisp_Object tem; | |
5176 | ||
265a9e55 | 5177 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5178 | { |
5179 | p = SAVED_WINDOW_N (vector, i); | |
5180 | w = XWINDOW (window); | |
5181 | ||
d834a2e9 | 5182 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
5183 | p->window = window; |
5184 | p->buffer = w->buffer; | |
5185 | p->left = w->left; | |
5186 | p->top = w->top; | |
5187 | p->width = w->width; | |
5188 | p->height = w->height; | |
5189 | p->hscroll = w->hscroll; | |
ea68264b | 5190 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5191 | p->display_table = w->display_table; |
a1d58e5b GM |
5192 | p->orig_top = w->orig_top; |
5193 | p->orig_height = w->orig_height; | |
265a9e55 | 5194 | if (!NILP (w->buffer)) |
7ab12479 JB |
5195 | { |
5196 | /* Save w's value of point in the window configuration. | |
5197 | If w is the selected window, then get the value of point | |
5198 | from the buffer; pointm is garbage in the selected window. */ | |
5199 | if (EQ (window, selected_window)) | |
5200 | { | |
5201 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5202 | set_marker_both (p->pointm, w->buffer, |
5203 | BUF_PT (XBUFFER (w->buffer)), | |
5204 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5205 | } |
5206 | else | |
eeb82665 | 5207 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5208 | |
eeb82665 | 5209 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5210 | p->start_at_line_beg = w->start_at_line_beg; |
5211 | ||
5212 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 5213 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5214 | } |
5215 | else | |
5216 | { | |
5217 | p->pointm = Qnil; | |
5218 | p->start = Qnil; | |
5219 | p->mark = Qnil; | |
5220 | p->start_at_line_beg = Qnil; | |
5221 | } | |
5222 | ||
265a9e55 | 5223 | if (NILP (w->parent)) |
7ab12479 JB |
5224 | p->parent = Qnil; |
5225 | else | |
5226 | p->parent = XWINDOW (w->parent)->temslot; | |
5227 | ||
265a9e55 | 5228 | if (NILP (w->prev)) |
7ab12479 JB |
5229 | p->prev = Qnil; |
5230 | else | |
5231 | p->prev = XWINDOW (w->prev)->temslot; | |
5232 | ||
265a9e55 | 5233 | if (!NILP (w->vchild)) |
7ab12479 | 5234 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5235 | if (!NILP (w->hchild)) |
7ab12479 JB |
5236 | i = save_window_save (w->hchild, vector, i); |
5237 | } | |
5238 | ||
5239 | return i; | |
5240 | } | |
5241 | ||
a0d76c27 | 5242 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5243 | Scurrent_window_configuration, 0, 1, 0, |
5244 | doc: /* Return an object representing the current window configuration of FRAME. | |
5245 | If FRAME is nil or omitted, use the selected frame. | |
5246 | This describes the number of windows, their sizes and current buffers, | |
5247 | and for each displayed buffer, where display starts, and the positions of | |
5248 | point and mark. An exception is made for point in the current buffer: | |
5249 | its value is -not- saved. | |
5250 | This also records the currently selected frame, and FRAME's focus | |
5251 | redirection (see `redirect-frame-focus'). */) | |
5252 | (frame) | |
44fa5b1e | 5253 | Lisp_Object frame; |
7ab12479 JB |
5254 | { |
5255 | register Lisp_Object tem; | |
5256 | register int n_windows; | |
5257 | register struct save_window_data *data; | |
da2792e0 | 5258 | register struct Lisp_Vector *vec; |
7ab12479 | 5259 | register int i; |
44fa5b1e | 5260 | FRAME_PTR f; |
43bad991 | 5261 | |
44fa5b1e | 5262 | if (NILP (frame)) |
1ae1a37d GM |
5263 | frame = selected_frame; |
5264 | CHECK_LIVE_FRAME (frame, 0); | |
5265 | f = XFRAME (frame); | |
7ab12479 | 5266 | |
44fa5b1e | 5267 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 5268 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
5269 | data = (struct save_window_data *)vec; |
5270 | ||
d834a2e9 KH |
5271 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
5272 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
5273 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 5274 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 5275 | data->selected_frame = selected_frame; |
44fa5b1e | 5276 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5277 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 5278 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 5279 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5280 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
5281 | XSETINT (data->min_height, window_min_height); |
5282 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5283 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5284 | data->saved_windows = tem; | |
5285 | for (i = 0; i < n_windows; i++) | |
5286 | XVECTOR (tem)->contents[i] | |
5287 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 5288 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5289 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5290 | return (tem); |
5291 | } | |
5292 | ||
5293 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 PJ |
5294 | 0, UNEVALLED, 0, |
5295 | doc: /* Execute body, preserving window sizes and contents. | |
5296 | Restore which buffer appears in which window, where display starts, | |
5297 | and the value of point and mark for each window. | |
5298 | Also restore the choice of selected window. | |
5299 | Also restore which buffer is current. | |
6924dda6 MB |
5300 | Does not restore the value of point in current buffer. |
5301 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 5302 | (args) |
7ab12479 JB |
5303 | Lisp_Object args; |
5304 | { | |
5305 | register Lisp_Object val; | |
5306 | register int count = specpdl_ptr - specpdl; | |
5307 | ||
5308 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5309 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5310 | val = Fprogn (args); |
5311 | return unbind_to (count, val); | |
5312 | } | |
5500c422 GM |
5313 | |
5314 | \f | |
5315 | /*********************************************************************** | |
5316 | Marginal Areas | |
5317 | ***********************************************************************/ | |
5318 | ||
5319 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5320 | 2, 3, 0, |
fdb82f93 PJ |
5321 | doc: /* Set width of marginal areas of window WINDOW. |
5322 | If window is nil, set margins of the currently selected window. | |
5323 | First parameter LEFT-WIDTH specifies the number of character | |
5324 | cells to reserve for the left marginal area. Second parameter | |
5325 | RIGHT-WIDTH does the same for the right marginal area. | |
5326 | A nil width parameter means no margin. */) | |
5327 | (window, left, right) | |
5500c422 GM |
5328 | Lisp_Object window, left, right; |
5329 | { | |
5330 | struct window *w = decode_window (window); | |
5500c422 GM |
5331 | |
5332 | if (!NILP (left)) | |
cfa22082 | 5333 | CHECK_NUMBER_OR_FLOAT (left, 1); |
5500c422 | 5334 | if (!NILP (right)) |
cfa22082 | 5335 | CHECK_NUMBER_OR_FLOAT (right, 2); |
5500c422 GM |
5336 | |
5337 | /* Check widths < 0 and translate a zero width to nil. | |
5338 | Margins that are too wide have to be checked elsewhere. */ | |
5339 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5340 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5341 | XSETFASTINT (left, 0); |
5342 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5343 | left = Qnil; | |
5344 | ||
5345 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 5346 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5347 | XSETFASTINT (right, 0); |
5348 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5349 | right = Qnil; | |
5350 | ||
5351 | w->left_margin_width = left; | |
5352 | w->right_margin_width = right; | |
5353 | ||
5354 | ++windows_or_buffers_changed; | |
5355 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5356 | return Qnil; | |
5357 | } | |
5358 | ||
5359 | ||
5360 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5361 | 0, 1, 0, | |
fdb82f93 PJ |
5362 | doc: /* Get width of marginal areas of window WINDOW. |
5363 | If WINDOW is omitted or nil, use the currently selected window. | |
5364 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
5365 | If a marginal area does not exist, its width will be returned | |
5366 | as nil. */) | |
5367 | (window) | |
5500c422 GM |
5368 | Lisp_Object window; |
5369 | { | |
5370 | struct window *w = decode_window (window); | |
5371 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5372 | } | |
5373 | ||
5374 | ||
7ab12479 | 5375 | \f |
5500c422 GM |
5376 | /*********************************************************************** |
5377 | Smooth scrolling | |
5378 | ***********************************************************************/ | |
5379 | ||
5380 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
fdb82f93 PJ |
5381 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
5382 | Use the selected window if WINDOW is nil or omitted. | |
5383 | Value is a multiple of the canonical character height of WINDOW. */) | |
5384 | (window) | |
5500c422 GM |
5385 | Lisp_Object window; |
5386 | { | |
47004952 | 5387 | Lisp_Object result; |
5500c422 GM |
5388 | struct frame *f; |
5389 | struct window *w; | |
5390 | ||
5391 | if (NILP (window)) | |
5392 | window = selected_window; | |
47004952 GM |
5393 | else |
5394 | CHECK_WINDOW (window, 0); | |
5500c422 GM |
5395 | w = XWINDOW (window); |
5396 | f = XFRAME (w->frame); | |
5397 | ||
5398 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5399 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5400 | else |
47004952 GM |
5401 | result = make_number (0); |
5402 | return result; | |
5500c422 GM |
5403 | } |
5404 | ||
5405 | ||
5406 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 | 5407 | 2, 2, 0, |
fdb82f93 PJ |
5408 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
5409 | WINDOW nil or omitted means use the selected window. VSCROLL is a | |
5410 | non-negative multiple of the canonical character height of WINDOW. */) | |
5411 | (window, vscroll) | |
47004952 | 5412 | Lisp_Object window, vscroll; |
5500c422 GM |
5413 | { |
5414 | struct window *w; | |
5415 | struct frame *f; | |
5416 | ||
5500c422 GM |
5417 | if (NILP (window)) |
5418 | window = selected_window; | |
47004952 GM |
5419 | else |
5420 | CHECK_WINDOW (window, 0); | |
5421 | CHECK_NUMBER_OR_FLOAT (vscroll, 1); | |
5422 | ||
5500c422 GM |
5423 | w = XWINDOW (window); |
5424 | f = XFRAME (w->frame); | |
5425 | ||
5426 | if (FRAME_WINDOW_P (f)) | |
5427 | { | |
5428 | int old_dy = w->vscroll; | |
47004952 GM |
5429 | |
5430 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5431 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5432 | |
5433 | /* Adjust glyph matrix of the frame if the virtual display | |
5434 | area becomes larger than before. */ | |
5435 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5436 | adjust_glyphs (f); | |
5437 | ||
5438 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5439 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5440 | } |
5441 | ||
47004952 | 5442 | return Fwindow_vscroll (window); |
5500c422 GM |
5443 | } |
5444 | ||
7bbb5782 GM |
5445 | \f |
5446 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5447 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5448 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5449 | |
5450 | void | |
f95464e4 | 5451 | foreach_window (f, fn, user_data) |
7bbb5782 | 5452 | struct frame *f; |
f95464e4 GM |
5453 | int (* fn) P_ ((struct window *, void *)); |
5454 | void *user_data; | |
7bbb5782 | 5455 | { |
f95464e4 | 5456 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5457 | } |
5458 | ||
5459 | ||
5460 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5461 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5462 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5463 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5464 | |
67492200 | 5465 | static int |
f95464e4 | 5466 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5467 | struct window *w; |
f95464e4 GM |
5468 | int (* fn) P_ ((struct window *, void *)); |
5469 | void *user_data; | |
7bbb5782 | 5470 | { |
67492200 GM |
5471 | int cont; |
5472 | ||
5473 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5474 | { |
5475 | if (!NILP (w->hchild)) | |
f95464e4 | 5476 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5477 | else if (!NILP (w->vchild)) |
f95464e4 | 5478 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
0f532a9a GM |
5479 | else |
5480 | cont = fn (w, user_data); | |
7bbb5782 GM |
5481 | |
5482 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5483 | } | |
67492200 GM |
5484 | |
5485 | return cont; | |
7bbb5782 GM |
5486 | } |
5487 | ||
5488 | ||
6d194a45 | 5489 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 5490 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5491 | the window start. */ |
5492 | ||
67492200 | 5493 | static int |
7bbb5782 GM |
5494 | freeze_window_start (w, freeze_p) |
5495 | struct window *w; | |
f95464e4 | 5496 | void *freeze_p; |
7bbb5782 GM |
5497 | { |
5498 | if (w == XWINDOW (selected_window) | |
5499 | || MINI_WINDOW_P (w) | |
5500 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5501 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5502 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5503 | freeze_p = NULL; |
7bbb5782 | 5504 | |
f95464e4 | 5505 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5506 | return 1; |
7bbb5782 GM |
5507 | } |
5508 | ||
5509 | ||
5510 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5511 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5512 | means freeze the window start. */ | |
5513 | ||
5514 | void | |
5515 | freeze_window_starts (f, freeze_p) | |
5516 | struct frame *f; | |
5517 | int freeze_p; | |
5518 | { | |
cbccabec | 5519 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5520 | } |
5500c422 GM |
5521 | |
5522 | \f | |
5523 | /*********************************************************************** | |
5524 | Initialization | |
5525 | ***********************************************************************/ | |
5526 | ||
cbff28e8 RS |
5527 | /* Return 1 if window configurations C1 and C2 |
5528 | describe the same state of affairs. This is used by Fequal. */ | |
5529 | ||
5530 | int | |
2f8274be | 5531 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5532 | Lisp_Object c1, c2; |
2f8274be | 5533 | int ignore_positions; |
cbff28e8 RS |
5534 | { |
5535 | register struct save_window_data *d1, *d2; | |
5536 | struct Lisp_Vector *sw1, *sw2; | |
5537 | int i; | |
5538 | ||
4d3edcb4 GM |
5539 | if (!WINDOW_CONFIGURATIONP (c1)) |
5540 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5541 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5542 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5543 | ||
cbff28e8 RS |
5544 | d1 = (struct save_window_data *) XVECTOR (c1); |
5545 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5546 | sw1 = XVECTOR (d1->saved_windows); | |
5547 | sw2 = XVECTOR (d2->saved_windows); | |
5548 | ||
5549 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5550 | return 0; | |
5551 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5552 | return 0; | |
5553 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5554 | return 0; | |
5555 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5556 | return 0; | |
5557 | /* Don't compare the current_window field directly. | |
5558 | Instead see w1_is_current and w2_is_current, below. */ | |
5559 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5560 | return 0; | |
2f8274be RS |
5561 | if (! ignore_positions) |
5562 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5563 | return 0; | |
cbff28e8 RS |
5564 | /* Don't compare the root_window field. |
5565 | We don't require the two configurations | |
5566 | to use the same window object, | |
5567 | and the two root windows must be equivalent | |
5568 | if everything else compares equal. */ | |
5569 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5570 | return 0; | |
5571 | if (! EQ (d1->min_width, d2->min_width)) | |
5572 | return 0; | |
5573 | if (! EQ (d1->min_height, d2->min_height)) | |
5574 | return 0; | |
5575 | ||
5576 | /* Verify that the two confis have the same number of windows. */ | |
5577 | if (sw1->size != sw2->size) | |
5578 | return 0; | |
5579 | ||
5580 | for (i = 0; i < sw1->size; i++) | |
5581 | { | |
5582 | struct saved_window *p1, *p2; | |
5583 | int w1_is_current, w2_is_current; | |
5584 | ||
5585 | p1 = SAVED_WINDOW_N (sw1, i); | |
5586 | p2 = SAVED_WINDOW_N (sw2, i); | |
5587 | ||
5588 | /* Verify that the current windows in the two | |
5589 | configurations correspond to each other. */ | |
5590 | w1_is_current = EQ (d1->current_window, p1->window); | |
5591 | w2_is_current = EQ (d2->current_window, p2->window); | |
5592 | ||
5593 | if (w1_is_current != w2_is_current) | |
5594 | return 0; | |
5595 | ||
5596 | /* Verify that the corresponding windows do match. */ | |
5597 | if (! EQ (p1->buffer, p2->buffer)) | |
5598 | return 0; | |
5599 | if (! EQ (p1->left, p2->left)) | |
5600 | return 0; | |
5601 | if (! EQ (p1->top, p2->top)) | |
5602 | return 0; | |
5603 | if (! EQ (p1->width, p2->width)) | |
5604 | return 0; | |
5605 | if (! EQ (p1->height, p2->height)) | |
5606 | return 0; | |
cbff28e8 RS |
5607 | if (! EQ (p1->display_table, p2->display_table)) |
5608 | return 0; | |
5609 | if (! EQ (p1->parent, p2->parent)) | |
5610 | return 0; | |
5611 | if (! EQ (p1->prev, p2->prev)) | |
5612 | return 0; | |
2f8274be RS |
5613 | if (! ignore_positions) |
5614 | { | |
5615 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5616 | return 0; | |
ea68264b GM |
5617 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
5618 | return 0; | |
2f8274be RS |
5619 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
5620 | return 0; | |
5621 | if (NILP (Fequal (p1->start, p2->start))) | |
5622 | return 0; | |
5623 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5624 | return 0; | |
5625 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5626 | return 0; | |
5627 | } | |
cbff28e8 RS |
5628 | } |
5629 | ||
5630 | return 1; | |
5631 | } | |
2f8274be RS |
5632 | |
5633 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5634 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
5635 | doc: /* Compare two window configurations as regards the structure of windows. |
5636 | This function ignores details such as the values of point and mark | |
5637 | and scrolling positions. */) | |
5638 | (x, y) | |
2f8274be RS |
5639 | Lisp_Object x, y; |
5640 | { | |
5641 | if (compare_window_configurations (x, y, 1)) | |
5642 | return Qt; | |
5643 | return Qnil; | |
5644 | } | |
cbff28e8 | 5645 | \f |
dfcf069d | 5646 | void |
7ab12479 JB |
5647 | init_window_once () |
5648 | { | |
1ae1a37d GM |
5649 | struct frame *f = make_terminal_frame (); |
5650 | XSETFRAME (selected_frame, f); | |
5651 | Vterminal_frame = selected_frame; | |
5652 | minibuf_window = f->minibuffer_window; | |
5653 | selected_window = f->selected_window; | |
5654 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5655 | |
5656 | window_initialized = 1; | |
7ab12479 JB |
5657 | } |
5658 | ||
67492200 GM |
5659 | void |
5660 | init_window () | |
5661 | { | |
5662 | Vwindow_list = Qnil; | |
5663 | } | |
5664 | ||
dfcf069d | 5665 | void |
7ab12479 JB |
5666 | syms_of_window () |
5667 | { | |
7442878f GM |
5668 | Qleft_fringe = intern ("left-fringe"); |
5669 | staticpro (&Qleft_fringe); | |
5670 | Qright_fringe = intern ("right-fringe"); | |
5671 | staticpro (&Qright_fringe); | |
fbad6f9a | 5672 | |
8a37516b GM |
5673 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5674 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5675 | |
543f5fb1 RS |
5676 | staticpro (&Qwindow_configuration_change_hook); |
5677 | Qwindow_configuration_change_hook | |
5678 | = intern ("window-configuration-change-hook"); | |
5679 | ||
7ab12479 JB |
5680 | Qwindowp = intern ("windowp"); |
5681 | staticpro (&Qwindowp); | |
5682 | ||
3f8ab7bd RS |
5683 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5684 | staticpro (&Qwindow_configuration_p); | |
5685 | ||
806b4d9b JB |
5686 | Qwindow_live_p = intern ("window-live-p"); |
5687 | staticpro (&Qwindow_live_p); | |
605be8af | 5688 | |
2cccc823 | 5689 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5690 | staticpro (&Qtemp_buffer_show_hook); |
5691 | ||
67492200 GM |
5692 | staticpro (&Vwindow_list); |
5693 | ||
7ab12479 | 5694 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
5695 | doc: /* Non-nil means call as function to display a help buffer. |
5696 | The function is called with one argument, the buffer to be displayed. | |
5697 | Used by `with-output-to-temp-buffer'. | |
5698 | If this function is used, then it must do the entire job of showing | |
5699 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
5700 | Vtemp_buffer_show_function = Qnil; |
5701 | ||
5702 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
5703 | doc: /* If non-nil, function to call to handle `display-buffer'. |
5704 | It will receive two args, the buffer and a flag which if non-nil means | |
5705 | that the currently selected window is not acceptable. | |
5706 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' | |
5707 | work using this function. */); | |
7ab12479 JB |
5708 | Vdisplay_buffer_function = Qnil; |
5709 | ||
6529ed87 | 5710 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
5711 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
5712 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
5713 | Veven_window_heights = Qt; |
5714 | ||
7ab12479 | 5715 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 5716 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
5717 | Vminibuf_scroll_window = Qnil; |
5718 | ||
5719 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
fdb82f93 | 5720 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
5721 | Vother_window_scroll_buffer = Qnil; |
5722 | ||
44fa5b1e | 5723 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 5724 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 5725 | pop_up_frames = 0; |
7ab12479 | 5726 | |
9c3da604 | 5727 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
5728 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
5729 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
5730 | display_buffer_reuse_frames = 0; |
5731 | ||
44fa5b1e | 5732 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
5733 | doc: /* Function to call to handle automatic new frame creation. |
5734 | It is called with no arguments and should return a newly created frame. | |
5735 | ||
5736 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
5737 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 5738 | Vpop_up_frame_function = Qnil; |
7ab12479 | 5739 | |
a90712c2 | 5740 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 PJ |
5741 | doc: /* *List of buffer names that should have their own special frames. |
5742 | Displaying a buffer whose name is in this list makes a special frame for it | |
5743 | using `special-display-function'. See also `special-display-regexps'. | |
5744 | ||
5745 | An element of the list can be a list instead of just a string. | |
5746 | There are two ways to use a list as an element: | |
5747 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
5748 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5749 | In the latter case, FUNCTION is called with BUFFER as the first argument, | |
5750 | followed by OTHER-ARGS--it can display BUFFER in any way it likes. | |
5751 | All this is done by the function found in `special-display-function'. | |
5752 | ||
5753 | If this variable appears \"not to work\", because you add a name to it | |
5754 | but that buffer still appears in the selected window, look at the | |
5755 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5756 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5757 | Vspecial_display_buffer_names = Qnil; |
5758 | ||
5759 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 PJ |
5760 | doc: /* *List of regexps saying which buffers should have their own special frames. |
5761 | If a buffer name matches one of these regexps, it gets its own frame. | |
5762 | Displaying a buffer whose name is in this list makes a special frame for it | |
5763 | using `special-display-function'. | |
5764 | ||
5765 | An element of the list can be a list instead of just a string. | |
5766 | There are two ways to use a list as an element: | |
5767 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
5768 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5769 | In the latter case, FUNCTION is called with the buffer as first argument, | |
5770 | followed by OTHER-ARGS--it can display the buffer in any way it likes. | |
5771 | All this is done by the function found in `special-display-function'. | |
5772 | ||
5773 | If this variable appears \"not to work\", because you add a regexp to it | |
5774 | but the matching buffers still appear in the selected window, look at the | |
5775 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5776 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5777 | Vspecial_display_regexps = Qnil; |
5778 | ||
5779 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
5780 | doc: /* Function to call to make a new frame for a special buffer. |
5781 | It is called with two arguments, the buffer and optional buffer specific | |
5782 | data, and should return a window displaying that buffer. | |
5783 | The default value makes a separate frame for the buffer, | |
5784 | using `special-display-frame-alist' to specify the frame parameters. | |
5785 | ||
5786 | A buffer is special if its is listed in `special-display-buffer-names' | |
5787 | or matches a regexp in `special-display-regexps'. */); | |
a90712c2 RS |
5788 | Vspecial_display_function = Qnil; |
5789 | ||
855d8627 | 5790 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
5791 | doc: /* *List of buffer names that should appear in the selected window. |
5792 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
5793 | switches to it in the selected window, rather than making it appear | |
5794 | in some other window. | |
5795 | ||
5796 | An element of the list can be a cons cell instead of just a string. | |
5797 | Then the car must be a string, which specifies the buffer name. | |
5798 | This is for compatibility with `special-display-buffer-names'; | |
5799 | the cdr of the cons cell is ignored. | |
5800 | ||
5801 | See also `same-window-regexps'. */); | |
855d8627 RS |
5802 | Vsame_window_buffer_names = Qnil; |
5803 | ||
5804 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
5805 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
5806 | If a buffer name matches one of these regexps, then displaying it | |
5807 | using `display-buffer' or `pop-to-buffer' switches to it | |
5808 | in the selected window, rather than making it appear in some other window. | |
5809 | ||
5810 | An element of the list can be a cons cell instead of just a string. | |
5811 | Then the car must be a string, which specifies the buffer name. | |
5812 | This is for compatibility with `special-display-buffer-names'; | |
5813 | the cdr of the cons cell is ignored. | |
5814 | ||
5815 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
5816 | Vsame_window_regexps = Qnil; |
5817 | ||
7ab12479 | 5818 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 5819 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
5820 | pop_up_windows = 1; |
5821 | ||
5822 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 5823 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
5824 | next_screen_context_lines = 2; |
5825 | ||
5826 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
fdb82f93 PJ |
5827 | doc: /* *display-buffer would prefer to split the largest window if this large. |
5828 | If there is only one window, it is split regardless of this value. */); | |
7ab12479 JB |
5829 | split_height_threshold = 500; |
5830 | ||
5831 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 5832 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
5833 | window_min_height = 4; |
5834 | ||
5835 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 5836 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
5837 | window_min_width = 10; |
5838 | ||
5500c422 GM |
5839 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5840 | &Vscroll_preserve_screen_position, | |
fdb82f93 | 5841 | doc: /* *Non-nil means scroll commands move point to keep its screen line unchanged. */); |
5500c422 | 5842 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5843 | |
543f5fb1 RS |
5844 | DEFVAR_LISP ("window-configuration-change-hook", |
5845 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
5846 | doc: /* Functions to call when window configuration changes. |
5847 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
5848 | Vwindow_configuration_change_hook = Qnil; |
5849 | ||
b0b7ed0e | 5850 | DEFVAR_BOOL ("window-size-fixed", &window_size_fixed, |
fdb82f93 PJ |
5851 | doc: /* Non-nil in a buffer means windows displaying the buffer are fixed-size. |
5852 | Emacs won't change the size of any window displaying that buffer, | |
5853 | unless you explicitly change the size, or Emacs has no other choice. | |
5854 | This variable automatically becomes buffer-local when set. */); | |
b0b7ed0e GM |
5855 | Fmake_variable_buffer_local (Qwindow_size_fixed); |
5856 | window_size_fixed = 0; | |
5857 | ||
7ab12479 JB |
5858 | defsubr (&Sselected_window); |
5859 | defsubr (&Sminibuffer_window); | |
5860 | defsubr (&Swindow_minibuffer_p); | |
5861 | defsubr (&Swindowp); | |
806b4d9b | 5862 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5863 | defsubr (&Spos_visible_in_window_p); |
5864 | defsubr (&Swindow_buffer); | |
5865 | defsubr (&Swindow_height); | |
5866 | defsubr (&Swindow_width); | |
5867 | defsubr (&Swindow_hscroll); | |
5868 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5869 | defsubr (&Swindow_redisplay_end_trigger); |
5870 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5871 | defsubr (&Swindow_edges); |
d5783c40 JB |
5872 | defsubr (&Scoordinates_in_window_p); |
5873 | defsubr (&Swindow_at); | |
7ab12479 JB |
5874 | defsubr (&Swindow_point); |
5875 | defsubr (&Swindow_start); | |
5876 | defsubr (&Swindow_end); | |
5877 | defsubr (&Sset_window_point); | |
5878 | defsubr (&Sset_window_start); | |
5879 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5880 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5881 | defsubr (&Swindow_display_table); |
5882 | defsubr (&Sset_window_display_table); | |
5883 | defsubr (&Snext_window); | |
5884 | defsubr (&Sprevious_window); | |
5885 | defsubr (&Sother_window); | |
5886 | defsubr (&Sget_lru_window); | |
5887 | defsubr (&Sget_largest_window); | |
5888 | defsubr (&Sget_buffer_window); | |
5889 | defsubr (&Sdelete_other_windows); | |
5890 | defsubr (&Sdelete_windows_on); | |
5891 | defsubr (&Sreplace_buffer_in_windows); | |
5892 | defsubr (&Sdelete_window); | |
5893 | defsubr (&Sset_window_buffer); | |
5894 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5895 | defsubr (&Sspecial_display_p); |
5896 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5897 | defsubr (&Sdisplay_buffer); |
5898 | defsubr (&Ssplit_window); | |
5899 | defsubr (&Senlarge_window); | |
5900 | defsubr (&Sshrink_window); | |
5901 | defsubr (&Sscroll_up); | |
5902 | defsubr (&Sscroll_down); | |
5903 | defsubr (&Sscroll_left); | |
5904 | defsubr (&Sscroll_right); | |
ccd0664b | 5905 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5906 | defsubr (&Sscroll_other_window); |
5907 | defsubr (&Srecenter); | |
81fe0836 | 5908 | defsubr (&Swindow_text_height); |
7ab12479 JB |
5909 | defsubr (&Smove_to_window_line); |
5910 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5911 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5912 | defsubr (&Sset_window_configuration); |
5913 | defsubr (&Scurrent_window_configuration); | |
5914 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5915 | defsubr (&Sset_window_margins); |
5916 | defsubr (&Swindow_margins); | |
5917 | defsubr (&Swindow_vscroll); | |
5918 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5919 | defsubr (&Scompare_window_configurations); |
67492200 | 5920 | defsubr (&Swindow_list); |
7ab12479 JB |
5921 | } |
5922 | ||
dfcf069d | 5923 | void |
7ab12479 JB |
5924 | keys_of_window () |
5925 | { | |
5926 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5927 | initial_define_key (control_x_map, '2', "split-window"); | |
5928 | initial_define_key (control_x_map, '0', "delete-window"); | |
5929 | initial_define_key (control_x_map, 'o', "other-window"); | |
5930 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5931 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5932 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5933 | ||
5934 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5935 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5936 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5937 | ||
5938 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5939 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5940 | } |