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, | |
413430c5 EN |
230 | "Returns t if OBJECT is a window.") |
231 | (object) | |
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, |
413430c5 EN |
238 | "Returns t if OBJECT is a window which is currently visible.") |
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, | |
286 | "Return the window that the cursor now appears in and commands apply to.") | |
287 | () | |
288 | { | |
289 | return selected_window; | |
290 | } | |
291 | ||
83762ba4 JB |
292 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
293 | "Return the window used now for minibuffers.\n\ | |
294 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
295 | used by that frame.") | |
296 | (frame) | |
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, |
7ab12479 JB |
306 | "Returns non-nil if WINDOW is a minibuffer window.") |
307 | (window) | |
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, |
81e4d465 | 316 | Spos_visible_in_window_p, 0, 3, 0, |
44fa5b1e | 317 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
53bb6b99 | 318 | Return nil if that position is scrolled vertically out of view.\n\ |
5cdb3cf3 MB |
319 | If a character is only partially visible, nil is returned, unless the\n\ |
320 | optional argument PARTIALLY is non-nil.\n\ | |
f28b75a9 | 321 | POS defaults to point in WINDOW; WINDOW defaults to the selected window.") |
5cdb3cf3 MB |
322 | (pos, window, partially) |
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, | |
394 | "Return the buffer that WINDOW is displaying.") | |
395 | (window) | |
396 | Lisp_Object window; | |
397 | { | |
398 | return decode_window (window)->buffer; | |
399 | } | |
400 | ||
401 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
402 | "Return the number of lines in WINDOW (including its mode line).") | |
403 | (window) | |
404 | Lisp_Object window; | |
405 | { | |
406 | return decode_window (window)->height; | |
407 | } | |
408 | ||
409 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
410 | "Return the number of display columns in WINDOW.\n\ |
411 | This is the width that is usable columns available for text in WINDOW.\n\ | |
412 | If you want to find out how many columns WINDOW takes up,\n\ | |
413 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
414 | (window) |
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, | |
421 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
422 | (window) | |
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, | |
429 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
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, | |
450 | "Return WINDOW's redisplay end trigger value.\n\ | |
451 | See `set-window-redisplay-end-trigger' for more information.") | |
452 | (window) | |
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, | |
460 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
461 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
462 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
463 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
464 | with two arguments: WINDOW, and the end trigger value.\n\ | |
465 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
466 | (window, value) |
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 JB |
476 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
477 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 478 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
479 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
480 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
481 | and its mode-line.") | |
482 | (window) | |
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 JB |
661 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
662 | Scoordinates_in_window_p, 2, 2, 0, | |
663 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 664 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 665 | measured in characters from the upper-left corner of the frame.\n\ |
7442878f | 666 | \(0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 667 | frame.\n\ |
d5783c40 JB |
668 | If COORDINATES are in the text portion of WINDOW,\n\ |
669 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 670 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
045dee35 | 671 | If they are in the top mode line of WINDOW, `header-line' is returned.\n\ |
7442878f GM |
672 | If they are in the fringe to the left of the window,\n\ |
673 | `left-fringe' is returned, if they are in the area on the right of\n\ | |
674 | the window, `right-fringe' is returned.\n\ | |
d5783c40 | 675 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 676 | `vertical-line' is returned.") |
d5783c40 JB |
677 | (coordinates, window) |
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, |
b0c33a94 | 811 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
812 | If omitted, FRAME defaults to the currently selected frame.\n\ |
813 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 814 | column 0.") |
b0c33a94 RS |
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, | |
837 | "Return current value of point in WINDOW.\n\ | |
838 | For a nonselected window, this is the value point would have\n\ | |
839 | if that window were selected.\n\ | |
840 | \n\ | |
841 | Note that, when WINDOW is the selected window and its buffer\n\ | |
842 | is also currently selected, the value returned is the same as (point).\n\ | |
843 | It would be more strictly correct to return the `top-level' value\n\ | |
844 | of point, outside of any save-excursion forms.\n\ | |
845 | But that is hard to define.") | |
846 | (window) | |
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, | |
0fea6c40 RS |
858 | "Return position at which display currently starts in WINDOW.\n\ |
859 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
860 | (window) |
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 | ||
7250968e RS |
868 | This function returns nil if the position is not currently known.\n\ |
869 | That happens when redisplay is preempted and doesn't finish.\n\ | |
870 | If in that case you want to compute where the end of the window would\n\ | |
871 | have been if redisplay had finished, do this:\n\ | |
872 | (save-excursion\n\ | |
873 | (goto-char (window-start window))\n\ | |
874 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
875 | (point))") */ |
876 | ||
478292ed | 877 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
8646118f RS |
878 | "Return position at which display currently ends in WINDOW.\n\ |
879 | This is updated by redisplay, when it runs to completion.\n\ | |
880 | Simply changing the buffer text or setting `window-start'\n\ | |
478292ed | 881 | does not update this value.\n\ |
dffde83f | 882 | If UPDATE is non-nil, compute the up-to-date position\n\ |
478292ed RS |
883 | if it isn't already recorded.") |
884 | (window, update) | |
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, | |
947 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
948 | (window, pos) | |
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, | |
969 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
970 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
971 | from overriding motion of point in order to display at this exact start.") | |
972 | (window, pos, noforce) | |
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, | |
994 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 995 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
996 | (window) |
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, | |
1004 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
1005 | If it is dedicated, Emacs will not automatically change\n\ | |
1006 | which buffer appears in it.\n\ | |
1007 | The second argument is the new value for the dedication flag;\n\ | |
1008 | non-nil means yes.") | |
7ab12479 JB |
1009 | (window, arg) |
1010 | Lisp_Object window, arg; | |
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, | |
1024 | "Return the display-table that WINDOW is using.") | |
1025 | (window) | |
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, |
7ab12479 JB |
1058 | "Set WINDOW's display-table to TABLE.") |
1059 | (window, table) | |
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, "", | |
1174 | "Remove WINDOW from the display. Default is selected window.") | |
1175 | (window) | |
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 JB |
1561 | /* This comment supplies the doc string for `next-window', |
1562 | for make-docfile to see. We cannot put this in the real DEFUN | |
1563 | due to limits in the Unix cpp. | |
1564 | ||
1565 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 1566 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1567 | If omitted, WINDOW defaults to the selected window.\n\ |
1568 | \n\ | |
1569 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1570 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1571 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1572 | minibuffer even if it is active.\n\ | |
1573 | \n\ | |
44fa5b1e JB |
1574 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1575 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1576 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
1577 | set of windows even when the minibuffer is on another frame. If the\n\ |
1578 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 1579 | \n\ |
44fa5b1e JB |
1580 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1581 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1582 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1583 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1584 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1585 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1586 | \n\ |
1587 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1588 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
1589 | windows, eventually ending up back at the window you started with.\n\ | |
1590 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1591 | (window, minibuf, all_frames) */ |
1592 | ||
1593 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
1594 | 0) | |
44fa5b1e | 1595 | (window, minibuf, all_frames) |
67492200 | 1596 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1597 | { |
67492200 | 1598 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1599 | } |
1600 | ||
67492200 | 1601 | |
26f6279d JB |
1602 | /* This comment supplies the doc string for `previous-window', |
1603 | for make-docfile to see. We cannot put this in the real DEFUN | |
1604 | due to limits in the Unix cpp. | |
1605 | ||
1606 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1607 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1608 | If omitted, WINDOW defaults to the selected window.\n\ |
1609 | \n\ | |
1610 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1611 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1612 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1613 | minibuffer even if it is active.\n\ | |
1614 | \n\ | |
44fa5b1e JB |
1615 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1616 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1617 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1618 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1619 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1620 | \n\ |
44fa5b1e JB |
1621 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1622 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1623 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1624 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1625 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1626 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1627 | \n\ |
1628 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1629 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1630 | windows, eventually ending up back at the window you started with.\n\ | |
1631 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1632 | (window, minibuf, all_frames) */ |
1633 | ||
1634 | ||
1635 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1636 | 0) | |
44fa5b1e | 1637 | (window, minibuf, all_frames) |
67492200 | 1638 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1639 | { |
67492200 | 1640 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1641 | } |
1642 | ||
67492200 | 1643 | |
62c07cc7 | 1644 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1645 | "Select the ARG'th different window on this frame.\n\ |
1646 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1647 | This command selects the window ARG steps away in that order.\n\ |
1648 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1649 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 | 1650 | (arg, all_frames) |
67492200 | 1651 | Lisp_Object arg, all_frames; |
7ab12479 | 1652 | { |
67492200 GM |
1653 | Lisp_Object window; |
1654 | int i; | |
7ab12479 | 1655 | |
413430c5 | 1656 | CHECK_NUMBER (arg, 0); |
67492200 GM |
1657 | window = selected_window; |
1658 | ||
1659 | for (i = XINT (arg); i > 0; --i) | |
1660 | window = Fnext_window (window, Qnil, all_frames); | |
1661 | for (; i < 0; ++i) | |
1662 | window = Fprevious_window (window, Qnil, all_frames); | |
1663 | ||
1664 | Fselect_window (window); | |
7ab12479 JB |
1665 | return Qnil; |
1666 | } | |
67492200 GM |
1667 | |
1668 | ||
1669 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
cd2904bd GM |
1670 | "Return a list of windows on FRAME, starting with WINDOW.\n\ |
1671 | FRAME nil or omitted means use the selected frame.\n\ | |
1672 | WINDOW nil or omitted means use the selected window.\n\ | |
1673 | MINIBUF t means include the minibuffer window, even if it isn't active.\n\ | |
1674 | MINIBUF nil or omitted means include the minibuffer window only\n\ | |
1675 | if it's active.\n\ | |
1676 | MINIBUF neither nil nor t means never include the minibuffer window.") | |
1677 | (frame, minibuf, window) | |
1678 | Lisp_Object frame, minibuf, window; | |
1679 | { | |
cd2904bd GM |
1680 | if (NILP (window)) |
1681 | window = selected_window; | |
1682 | if (NILP (frame)) | |
1683 | frame = selected_frame; | |
1684 | ||
1685 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1686 | error ("Window is on a different frame"); | |
1687 | ||
1688 | return window_list_1 (window, minibuf, frame); | |
1689 | } | |
1690 | ||
1691 | ||
1692 | /* Return a list of windows in canonical ordering. Arguments are like | |
1693 | for `next-window'. */ | |
1694 | ||
1695 | static Lisp_Object | |
1696 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1697 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1698 | { |
1699 | Lisp_Object tail, list; | |
1700 | ||
1701 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1702 | list = Qnil; | |
1703 | ||
1704 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
118ea242 | 1705 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 GM |
1706 | list = Fcons (XCAR (tail), list); |
1707 | ||
118ea242 | 1708 | return Fnreverse (list); |
67492200 GM |
1709 | } |
1710 | ||
1711 | ||
7ab12479 JB |
1712 | \f |
1713 | /* Look at all windows, performing an operation specified by TYPE | |
1714 | with argument OBJ. | |
75d8f668 | 1715 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1716 | Qnil, look at just the selected frame; |
89bca612 | 1717 | Qvisible, look at visible frames; |
75d8f668 | 1718 | a frame, just look at windows on that frame. |
85fe3b5e | 1719 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1720 | |
1721 | enum window_loop | |
1722 | { | |
1723 | WINDOW_LOOP_UNUSED, | |
1724 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1725 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1726 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1727 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1728 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1729 | UNSHOW_BUFFER, /* Arg is buffer */ |
1730 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1731 | }; |
1732 | ||
1733 | static Lisp_Object | |
44fa5b1e | 1734 | window_loop (type, obj, mini, frames) |
7ab12479 | 1735 | enum window_loop type; |
118ea242 | 1736 | Lisp_Object obj, frames; |
7ab12479 JB |
1737 | int mini; |
1738 | { | |
118ea242 GM |
1739 | Lisp_Object window, windows, best_window, frame_arg; |
1740 | struct frame *f; | |
ffdc852d | 1741 | struct gcpro gcpro1; |
118ea242 | 1742 | |
44fa5b1e JB |
1743 | /* If we're only looping through windows on a particular frame, |
1744 | frame points to that frame. If we're looping through windows | |
1745 | on all frames, frame is 0. */ | |
1746 | if (FRAMEP (frames)) | |
118ea242 | 1747 | f = XFRAME (frames); |
44fa5b1e | 1748 | else if (NILP (frames)) |
118ea242 | 1749 | f = SELECTED_FRAME (); |
7ab12479 | 1750 | else |
118ea242 GM |
1751 | f = NULL; |
1752 | ||
1753 | if (f) | |
89bca612 | 1754 | frame_arg = Qlambda; |
f812f9c6 RS |
1755 | else if (XFASTINT (frames) == 0) |
1756 | frame_arg = frames; | |
89bca612 RS |
1757 | else if (EQ (frames, Qvisible)) |
1758 | frame_arg = frames; | |
118ea242 GM |
1759 | else |
1760 | frame_arg = Qt; | |
7ab12479 | 1761 | |
89bca612 RS |
1762 | /* frame_arg is Qlambda to stick to one frame, |
1763 | Qvisible to consider all visible frames, | |
1764 | or Qt otherwise. */ | |
1765 | ||
7ab12479 | 1766 | /* Pick a window to start with. */ |
017b2bad | 1767 | if (WINDOWP (obj)) |
118ea242 GM |
1768 | window = obj; |
1769 | else if (f) | |
1770 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1771 | else |
118ea242 | 1772 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1773 | |
cd2904bd | 1774 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1775 | GCPRO1 (windows); |
7ab12479 | 1776 | best_window = Qnil; |
118ea242 GM |
1777 | |
1778 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1779 | { |
118ea242 GM |
1780 | struct window *w; |
1781 | ||
1782 | window = XCAR (windows); | |
1783 | w = XWINDOW (window); | |
1784 | ||
1785 | /* Note that we do not pay attention here to whether the frame | |
1786 | is visible, since Fwindow_list skips non-visible frames if | |
1787 | that is desired, under the control of frame_arg. */ | |
1788 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1789 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1790 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1791 | || (mini && minibuf_level > 0)) |
1792 | switch (type) | |
1793 | { | |
1794 | case GET_BUFFER_WINDOW: | |
118ea242 | 1795 | if (EQ (w->buffer, obj) |
5c204627 RS |
1796 | /* Don't find any minibuffer window |
1797 | except the one that is currently in use. */ | |
118ea242 GM |
1798 | && (MINI_WINDOW_P (w) |
1799 | ? EQ (window, minibuf_window) | |
1800 | : 1)) | |
1801 | { | |
5ddc1b75 GM |
1802 | if (NILP (best_window)) |
1803 | best_window = window; | |
1804 | else if (EQ (window, selected_window)) | |
1805 | /* For compatibility with 20.x, prefer to return | |
1806 | selected-window. */ | |
1807 | best_window = window; | |
118ea242 | 1808 | } |
7ab12479 JB |
1809 | break; |
1810 | ||
1811 | case GET_LRU_WINDOW: | |
1812 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1813 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1814 | break; |
7ab12479 | 1815 | /* Ignore dedicated windows and minibuffers. */ |
118ea242 | 1816 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
7ab12479 | 1817 | break; |
265a9e55 | 1818 | if (NILP (best_window) |
7ab12479 | 1819 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1820 | > XFASTINT (w->use_time))) |
1821 | best_window = window; | |
7ab12479 JB |
1822 | break; |
1823 | ||
1824 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1825 | if (!EQ (window, obj)) |
1826 | Fdelete_window (window); | |
7ab12479 JB |
1827 | break; |
1828 | ||
1829 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1830 | if (EQ (w->buffer, obj)) |
7ab12479 | 1831 | { |
118ea242 | 1832 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1833 | |
1834 | /* If this window is dedicated, and in a frame of its own, | |
1835 | kill the frame. */ | |
118ea242 GM |
1836 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1837 | && !NILP (w->dedicated) | |
3548e138 | 1838 | && other_visible_frames (f)) |
7ab12479 | 1839 | { |
3548e138 RS |
1840 | /* Skip the other windows on this frame. |
1841 | There might be one, the minibuffer! */ | |
118ea242 GM |
1842 | while (CONSP (XCDR (windows)) |
1843 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1844 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1845 | windows = XCDR (windows); | |
1846 | ||
3548e138 | 1847 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1848 | Fdelete_frame (w->frame, Qnil); |
1849 | } | |
1850 | else if (NILP (w->parent)) | |
1851 | { | |
1852 | /* If we're deleting the buffer displayed in the | |
1853 | only window on the frame, find a new buffer to | |
1854 | display there. */ | |
1855 | Lisp_Object buffer; | |
1856 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1857 | if (NILP (buffer)) | |
1858 | buffer = Fget_buffer_create (build_string ("*scratch*")); | |
1859 | Fset_window_buffer (window, buffer); | |
1860 | if (EQ (window, selected_window)) | |
1861 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1862 | } |
1863 | else | |
118ea242 | 1864 | Fdelete_window (window); |
7ab12479 JB |
1865 | } |
1866 | break; | |
1867 | ||
1868 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1869 | { |
118ea242 | 1870 | /* Ignore dedicated windows and minibuffers. */ |
c930dfab | 1871 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
118ea242 GM |
1872 | break; |
1873 | ||
c930dfab | 1874 | if (NILP (best_window)) |
118ea242 | 1875 | best_window = window; |
c930dfab GM |
1876 | else |
1877 | { | |
1878 | struct window *b = XWINDOW (best_window); | |
1879 | if (XFASTINT (w->height) * XFASTINT (w->width) | |
1880 | > XFASTINT (b->height) * XFASTINT (b->width)) | |
1881 | best_window = window; | |
1882 | } | |
7ab12479 JB |
1883 | } |
1884 | break; | |
1885 | ||
1886 | case UNSHOW_BUFFER: | |
118ea242 | 1887 | if (EQ (w->buffer, obj)) |
7ab12479 | 1888 | { |
118ea242 GM |
1889 | Lisp_Object buffer; |
1890 | struct frame *f = XFRAME (w->frame); | |
1891 | ||
7ab12479 | 1892 | /* Find another buffer to show in this window. */ |
118ea242 GM |
1893 | buffer = Fother_buffer (obj, Qnil, w->frame); |
1894 | if (NILP (buffer)) | |
1895 | buffer = Fget_buffer_create (build_string ("*scratch*")); | |
1896 | ||
38ab08d1 RS |
1897 | /* If this window is dedicated, and in a frame of its own, |
1898 | kill the frame. */ | |
118ea242 GM |
1899 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1900 | && !NILP (w->dedicated) | |
38ab08d1 | 1901 | && other_visible_frames (f)) |
45945a7b RS |
1902 | { |
1903 | /* Skip the other windows on this frame. | |
1904 | There might be one, the minibuffer! */ | |
118ea242 GM |
1905 | while (CONSP (XCDR (windows)) |
1906 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1907 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1908 | windows = XCDR (windows); | |
1909 | ||
45945a7b | 1910 | /* Now we can safely delete the frame. */ |
118ea242 | 1911 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1912 | } |
38ab08d1 | 1913 | else |
38ab08d1 RS |
1914 | { |
1915 | /* Otherwise show a different buffer in the window. */ | |
118ea242 GM |
1916 | w->dedicated = Qnil; |
1917 | Fset_window_buffer (window, buffer); | |
1918 | if (EQ (window, selected_window)) | |
1919 | Fset_buffer (w->buffer); | |
38ab08d1 | 1920 | } |
7ab12479 JB |
1921 | } |
1922 | break; | |
3f8ab7bd RS |
1923 | |
1924 | /* Check for a window that has a killed buffer. */ | |
1925 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1926 | if (! NILP (w->buffer) |
1927 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1928 | abort (); |
118ea242 | 1929 | break; |
6bbd7a29 GM |
1930 | |
1931 | case WINDOW_LOOP_UNUSED: | |
1932 | break; | |
7ab12479 | 1933 | } |
7ab12479 | 1934 | } |
7ab12479 | 1935 | |
118ea242 | 1936 | UNGCPRO; |
7ab12479 | 1937 | return best_window; |
37962e60 | 1938 | } |
605be8af | 1939 | |
3f8ab7bd RS |
1940 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1941 | ||
233a4a2c | 1942 | void |
3f8ab7bd RS |
1943 | check_all_windows () |
1944 | { | |
1945 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1946 | } | |
1947 | ||
7ab12479 JB |
1948 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1949 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1950 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1951 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1952 | If FRAME is t, search all frames.\n\ |
1953 | If FRAME is nil, search only the selected frame.\n\ | |
1954 | If FRAME is a frame, search only that frame.") | |
1955 | (frame) | |
1956 | Lisp_Object frame; | |
7ab12479 JB |
1957 | { |
1958 | register Lisp_Object w; | |
1959 | /* First try for a window that is full-width */ | |
89bca612 | 1960 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1961 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1962 | return w; |
1963 | /* If none of them, try the rest */ | |
89bca612 | 1964 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1965 | } |
1966 | ||
1967 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1968 | "Return the largest window in area.\n\ | |
89bca612 | 1969 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1970 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1971 | If FRAME is t, search all frames.\n\ |
1972 | If FRAME is nil, search only the selected frame.\n\ | |
1973 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1974 | (frame) |
1975 | Lisp_Object frame; | |
7ab12479 JB |
1976 | { |
1977 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1978 | frame); |
7ab12479 JB |
1979 | } |
1980 | ||
1981 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1982 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1983 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1984 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1985 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1986 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1987 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1988 | (buffer, frame) |
1989 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1990 | { |
1991 | buffer = Fget_buffer (buffer); | |
017b2bad | 1992 | if (BUFFERP (buffer)) |
44fa5b1e | 1993 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1994 | else |
1995 | return Qnil; | |
1996 | } | |
1997 | ||
1998 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1999 | 0, 1, "", | |
44fa5b1e | 2000 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
2001 | Only the frame WINDOW is on is affected.\n\ |
2002 | This function tries to reduce display jumps\n\ | |
2003 | by keeping the text previously visible in WINDOW\n\ | |
2004 | in the same place on the frame. Doing this depends on\n\ | |
2005 | the value of (window-start WINDOW), so if calling this function\n\ | |
2006 | in a program gives strange scrolling, make sure the window-start\n\ | |
2007 | value is reasonable when this function is called.") | |
7ab12479 JB |
2008 | (window) |
2009 | Lisp_Object window; | |
2010 | { | |
2011 | struct window *w; | |
00d3d838 | 2012 | int startpos; |
85fe3b5e | 2013 | int top, new_top; |
7ab12479 | 2014 | |
265a9e55 | 2015 | if (NILP (window)) |
7ab12479 JB |
2016 | window = selected_window; |
2017 | else | |
605be8af | 2018 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 2019 | w = XWINDOW (window); |
a2b38b3c | 2020 | |
00d3d838 | 2021 | startpos = marker_position (w->start); |
5500c422 | 2022 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2023 | |
a2b38b3c RS |
2024 | if (MINI_WINDOW_P (w) && top > 0) |
2025 | error ("Can't expand minibuffer to full frame"); | |
2026 | ||
70728a80 | 2027 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2028 | |
00d3d838 KH |
2029 | /* Try to minimize scrolling, by setting the window start to the point |
2030 | will cause the text at the old window start to be at the same place | |
2031 | on the frame. But don't try to do this if the window start is | |
2032 | outside the visible portion (as might happen when the display is | |
2033 | not current, due to typeahead). */ | |
85fe3b5e GM |
2034 | new_top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
2035 | if (new_top != top | |
2036 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2037 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2038 | { | |
2039 | struct position pos; | |
2040 | struct buffer *obuf = current_buffer; | |
2041 | ||
2042 | Fset_buffer (w->buffer); | |
2043 | /* This computation used to temporarily move point, but that can | |
2044 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2045 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2046 | |
b73ea88e | 2047 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2048 | w->window_end_valid = Qnil; |
b73ea88e RS |
2049 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2050 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2051 | : Qnil); |
80622eec RS |
2052 | /* We need to do this, so that the window-scroll-functions |
2053 | get called. */ | |
4d047f50 | 2054 | w->optional_new_start = Qt; |
00d3d838 KH |
2055 | |
2056 | set_buffer_internal (obuf); | |
2057 | } | |
5500c422 | 2058 | |
7ab12479 JB |
2059 | return Qnil; |
2060 | } | |
2061 | ||
2062 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 2063 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
2064 | "Delete all windows showing BUFFER.\n\ |
2065 | Optional second argument FRAME controls which frames are affected.\n\ | |
c520265e RS |
2066 | If optional argument FRAME is `visible', search all visible frames.\n\ |
2067 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2068 | If FRAME is nil, search all frames.\n\ | |
2069 | If FRAME is t, search only the selected frame.\n\ | |
2070 | If FRAME is a frame, search only that frame.") | |
26f6279d JB |
2071 | (buffer, frame) |
2072 | Lisp_Object buffer, frame; | |
7ab12479 | 2073 | { |
26f6279d JB |
2074 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2075 | expects. */ | |
c520265e RS |
2076 | if (NILP (frame)) |
2077 | frame = Qt; | |
2078 | else if (EQ (frame, Qt)) | |
2079 | frame = Qnil; | |
26f6279d | 2080 | |
265a9e55 | 2081 | if (!NILP (buffer)) |
7ab12479 JB |
2082 | { |
2083 | buffer = Fget_buffer (buffer); | |
2084 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 2085 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2086 | } |
5500c422 | 2087 | |
7ab12479 JB |
2088 | return Qnil; |
2089 | } | |
2090 | ||
2091 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
2092 | Sreplace_buffer_in_windows, | |
2093 | 1, 1, "bReplace buffer in windows: ", | |
2094 | "Replace BUFFER with some other buffer in all windows showing it.") | |
2095 | (buffer) | |
2096 | Lisp_Object buffer; | |
2097 | { | |
265a9e55 | 2098 | if (!NILP (buffer)) |
7ab12479 JB |
2099 | { |
2100 | buffer = Fget_buffer (buffer); | |
2101 | CHECK_BUFFER (buffer, 0); | |
2102 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2103 | } | |
2104 | return Qnil; | |
2105 | } | |
ff58478b RS |
2106 | |
2107 | /* Replace BUFFER with some other buffer in all windows | |
2108 | of all frames, even those on other keyboards. */ | |
2109 | ||
2110 | void | |
2111 | replace_buffer_in_all_windows (buffer) | |
2112 | Lisp_Object buffer; | |
2113 | { | |
27abb84f | 2114 | #ifdef MULTI_KBOARD |
ff58478b RS |
2115 | Lisp_Object tail, frame; |
2116 | ||
ff58478b RS |
2117 | /* A single call to window_loop won't do the job |
2118 | because it only considers frames on the current keyboard. | |
2119 | So loop manually over frames, and handle each one. */ | |
2120 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2121 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2122 | #else |
db7f721d | 2123 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2124 | #endif |
2125 | } | |
7ab12479 JB |
2126 | \f |
2127 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2128 | |
2129 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2130 | might crash Emacs. */ | |
5500c422 | 2131 | |
a481b3ea JB |
2132 | #define MIN_SAFE_WINDOW_WIDTH (2) |
2133 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
2134 | ||
2135 | /* Make sure that window_min_height and window_min_width are | |
2136 | not too small; if they are, set them to safe minima. */ | |
2137 | ||
2138 | static void | |
2139 | check_min_window_sizes () | |
2140 | { | |
2141 | /* Smaller values might permit a crash. */ | |
2142 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2143 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2144 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2145 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2146 | } | |
2147 | ||
2148 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2149 | minimum allowable size. */ | |
5500c422 | 2150 | |
605be8af | 2151 | void |
a481b3ea | 2152 | check_frame_size (frame, rows, cols) |
605be8af JB |
2153 | FRAME_PTR frame; |
2154 | int *rows, *cols; | |
a481b3ea | 2155 | { |
628df3bf | 2156 | /* For height, we have to see: |
37962e60 | 2157 | whether the frame has a minibuffer, |
628df3bf JB |
2158 | whether it wants a mode line, and |
2159 | whether it has a menu bar. */ | |
a481b3ea | 2160 | int min_height = |
79f92720 JB |
2161 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
2162 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 2163 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
2164 | |
2165 | if (FRAME_TOP_MARGIN (frame) > 0) | |
2166 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2167 | |
2168 | if (*rows < min_height) | |
2169 | *rows = min_height; | |
2170 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2171 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2172 | } | |
2173 | ||
c1636aa6 | 2174 | |
233a4a2c GM |
2175 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2176 | check if W's width can be changed, otherwise check W's height. | |
2177 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2178 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2179 | either. */ | |
c1636aa6 | 2180 | |
233a4a2c GM |
2181 | static int |
2182 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2183 | struct window *w; | |
2184 | int width_p, check_siblings_p; | |
2185 | { | |
2186 | int fixed_p; | |
2187 | struct window *c; | |
2188 | ||
2189 | if (!NILP (w->hchild)) | |
2190 | { | |
2191 | c = XWINDOW (w->hchild); | |
2192 | ||
2193 | if (width_p) | |
2194 | { | |
2195 | /* A horiz. combination is fixed-width if all of if its | |
2196 | children are. */ | |
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 horiz. combination is fixed-height if one of if its | |
2204 | children is. */ | |
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 (!NILP (w->vchild)) | |
2211 | { | |
2212 | c = XWINDOW (w->vchild); | |
2213 | ||
2214 | if (width_p) | |
2215 | { | |
2216 | /* A vert. combination is fixed-width if one of if its | |
2217 | children is. */ | |
2218 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2219 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2220 | fixed_p = c != NULL; | |
2221 | } | |
2222 | else | |
2223 | { | |
2224 | /* A vert. combination is fixed-height if all of if its | |
2225 | children are. */ | |
2226 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2227 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2228 | fixed_p = c == NULL; | |
2229 | } | |
2230 | } | |
2231 | else if (BUFFERP (w->buffer)) | |
2232 | { | |
a34dfd12 GM |
2233 | if (w->height_fixed_p && !width_p) |
2234 | fixed_p = 1; | |
2235 | else | |
233a4a2c | 2236 | { |
a34dfd12 GM |
2237 | struct buffer *old = current_buffer; |
2238 | Lisp_Object val; | |
2239 | ||
2240 | current_buffer = XBUFFER (w->buffer); | |
2241 | val = find_symbol_value (Qwindow_size_fixed); | |
2242 | current_buffer = old; | |
2243 | ||
2244 | fixed_p = 0; | |
2245 | if (!EQ (val, Qunbound)) | |
2246 | { | |
2247 | fixed_p = !NILP (val); | |
2248 | ||
2249 | if (fixed_p | |
2250 | && ((EQ (val, Qheight) && width_p) | |
2251 | || (EQ (val, Qwidth) && !width_p))) | |
2252 | fixed_p = 0; | |
2253 | } | |
233a4a2c GM |
2254 | } |
2255 | ||
2256 | /* Can't tell if this one is resizable without looking at | |
2257 | siblings. If all siblings are fixed-size this one is too. */ | |
2258 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2259 | { | |
2260 | Lisp_Object child; | |
2261 | ||
2262 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2263 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2264 | break; | |
2265 | ||
2266 | if (NILP (child)) | |
2267 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2268 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2269 | break; | |
2270 | ||
2271 | if (NILP (child)) | |
2272 | fixed_p = 1; | |
2273 | } | |
2274 | } | |
2275 | else | |
2276 | fixed_p = 1; | |
2277 | ||
2278 | return fixed_p; | |
2279 | } | |
2280 | ||
2281 | ||
2282 | /* Return the minimum size of window W, not taking fixed-width windows | |
2283 | into account. WIDTH_P non-zero means return the minimum width, | |
2284 | otherwise return the minimum height. If W is a combination window, | |
2285 | compute the minimum size from the minimum sizes of W's children. */ | |
2286 | ||
2287 | static int | |
2288 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2289 | struct window *w; |
2290 | int width_p; | |
2291 | { | |
233a4a2c | 2292 | struct window *c; |
c1636aa6 GM |
2293 | int size; |
2294 | ||
233a4a2c GM |
2295 | if (!NILP (w->hchild)) |
2296 | { | |
2297 | c = XWINDOW (w->hchild); | |
2298 | size = 0; | |
2299 | ||
2300 | if (width_p) | |
2301 | { | |
2302 | /* The min width of a horizontal combination is | |
2303 | the sum of the min widths of its children. */ | |
2304 | while (c) | |
2305 | { | |
2306 | size += window_min_size_1 (c, width_p); | |
2307 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2308 | } | |
2309 | } | |
2310 | else | |
2311 | { | |
2312 | /* The min height a horizontal combination equals | |
2313 | the maximum of all min height of its children. */ | |
2314 | while (c) | |
2315 | { | |
2316 | int min_size = window_min_size_1 (c, width_p); | |
2317 | size = max (min_size, size); | |
2318 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2319 | } | |
2320 | } | |
2321 | } | |
2322 | else if (!NILP (w->vchild)) | |
2323 | { | |
2324 | c = XWINDOW (w->vchild); | |
2325 | size = 0; | |
2326 | ||
2327 | if (width_p) | |
2328 | { | |
2329 | /* The min width of a vertical combination is | |
2330 | the maximum of the min widths of its children. */ | |
2331 | while (c) | |
2332 | { | |
2333 | int min_size = window_min_size_1 (c, width_p); | |
2334 | size = max (min_size, size); | |
2335 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2336 | } | |
2337 | } | |
2338 | else | |
2339 | { | |
2340 | /* The min height of a vertical combination equals | |
2341 | the sum of the min height of its children. */ | |
2342 | while (c) | |
2343 | { | |
2344 | size += window_min_size_1 (c, width_p); | |
2345 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2346 | } | |
2347 | } | |
2348 | } | |
c1636aa6 GM |
2349 | else |
2350 | { | |
233a4a2c GM |
2351 | if (width_p) |
2352 | size = window_min_width; | |
c1636aa6 | 2353 | else |
233a4a2c GM |
2354 | { |
2355 | if (MINI_WINDOW_P (w) | |
2356 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2357 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2358 | size = 1; |
2359 | else | |
2360 | size = window_min_height; | |
2361 | } | |
c1636aa6 GM |
2362 | } |
2363 | ||
2364 | return size; | |
2365 | } | |
2366 | ||
2367 | ||
233a4a2c GM |
2368 | /* Return the minimum size of window W, taking fixed-size windows into |
2369 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2370 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2371 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2372 | unless FIXED is null. */ | |
7ab12479 | 2373 | |
233a4a2c | 2374 | static int |
f984d4fc | 2375 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2376 | struct window *w; |
f984d4fc | 2377 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2378 | { |
2379 | int size, fixed_p; | |
2380 | ||
f984d4fc GM |
2381 | if (ignore_fixed_p) |
2382 | fixed_p = 0; | |
2383 | else | |
2384 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2385 | ||
233a4a2c GM |
2386 | if (fixed) |
2387 | *fixed = fixed_p; | |
2388 | ||
2389 | if (fixed_p) | |
2390 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2391 | else | |
2392 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2393 | |
233a4a2c GM |
2394 | return size; |
2395 | } | |
2396 | ||
2397 | ||
2398 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2399 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2400 | keep their proportionate size relative to WINDOW. Propagate | |
2401 | WINDOW's top or left edge position to children. Delete windows | |
2402 | that become too small unless NODELETE_P is non-zero. */ | |
2403 | ||
2404 | static void | |
2405 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2406 | Lisp_Object window; |
233a4a2c | 2407 | int size, width_p, nodelete_p; |
7ab12479 | 2408 | { |
233a4a2c GM |
2409 | struct window *w = XWINDOW (window); |
2410 | struct window *c; | |
2411 | Lisp_Object child, *forward, *sideward; | |
2412 | int old_size, min_size; | |
7ab12479 | 2413 | |
a481b3ea | 2414 | check_min_window_sizes (); |
7ae2f10f | 2415 | size = max (0, size); |
233a4a2c | 2416 | |
b5f05b50 GM |
2417 | /* If the window has been "too small" at one point, |
2418 | don't delete it for being "too small" in the future. | |
2419 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2420 | if (width_p) |
2421 | { | |
8b6d9dc9 | 2422 | old_size = XINT (w->width); |
233a4a2c GM |
2423 | min_size = window_min_width; |
2424 | } | |
2425 | else | |
2426 | { | |
8b6d9dc9 | 2427 | old_size = XINT (w->height); |
233a4a2c GM |
2428 | min_size = window_min_height; |
2429 | } | |
2430 | ||
f18625cd | 2431 | if (old_size < min_size) |
b5f05b50 GM |
2432 | w->too_small_ok = Qt; |
2433 | ||
233a4a2c GM |
2434 | /* Maybe delete WINDOW if it's too small. */ |
2435 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2436 | { |
b5f05b50 | 2437 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2438 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2439 | else |
233a4a2c | 2440 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2441 | |
233a4a2c | 2442 | if (size < min_size) |
c1636aa6 GM |
2443 | { |
2444 | delete_window (window); | |
2445 | return; | |
2446 | } | |
7ab12479 JB |
2447 | } |
2448 | ||
233a4a2c | 2449 | /* Set redisplay hints. */ |
7ae2f10f GM |
2450 | w->last_modified = make_number (0); |
2451 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2452 | windows_or_buffers_changed++; |
7ae2f10f | 2453 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2454 | |
233a4a2c GM |
2455 | if (width_p) |
2456 | { | |
2457 | sideward = &w->vchild; | |
2458 | forward = &w->hchild; | |
7ae2f10f | 2459 | w->width = make_number (size); |
233a4a2c GM |
2460 | } |
2461 | else | |
2462 | { | |
2463 | sideward = &w->hchild; | |
2464 | forward = &w->vchild; | |
7ae2f10f | 2465 | w->height = make_number (size); |
0130fe1a | 2466 | w->orig_height = Qnil; |
233a4a2c GM |
2467 | } |
2468 | ||
2469 | if (!NILP (*sideward)) | |
7ab12479 | 2470 | { |
233a4a2c | 2471 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2472 | { |
233a4a2c GM |
2473 | c = XWINDOW (child); |
2474 | if (width_p) | |
2475 | c->left = w->left; | |
2476 | else | |
2477 | c->top = w->top; | |
2478 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2479 | } |
2480 | } | |
233a4a2c | 2481 | else if (!NILP (*forward)) |
7ab12479 | 2482 | { |
233a4a2c GM |
2483 | int fixed_size, each, extra, n; |
2484 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2485 | int last_pos, first_pos, nchildren, total; |
233a4a2c GM |
2486 | |
2487 | /* Determine the fixed-size portion of the this window, and the | |
2488 | number of child windows. */ | |
8b6d9dc9 | 2489 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2490 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2491 | { |
8b6d9dc9 GM |
2492 | int child_size; |
2493 | ||
7ab12479 | 2494 | c = XWINDOW (child); |
8b6d9dc9 GM |
2495 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
2496 | total += child_size; | |
2497 | ||
233a4a2c GM |
2498 | if (window_fixed_size_p (c, width_p, 0)) |
2499 | { | |
8b6d9dc9 | 2500 | fixed_size += child_size; |
233a4a2c GM |
2501 | ++nfixed; |
2502 | } | |
2503 | } | |
7ab12479 | 2504 | |
233a4a2c GM |
2505 | /* If the new size is smaller than fixed_size, or if there |
2506 | aren't any resizable windows, allow resizing fixed-size | |
2507 | windows. */ | |
2508 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2509 | ||
2510 | /* Compute how many lines/columns to add to each child. The | |
2511 | value of extra takes care of rounding errors. */ | |
2512 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
8b6d9dc9 GM |
2513 | each = (size - total) / n; |
2514 | extra = (size - total) - n * each; | |
233a4a2c GM |
2515 | |
2516 | /* Compute new children heights and edge positions. */ | |
8b6d9dc9 | 2517 | first_pos = width_p ? XINT (w->left) : XINT (w->top); |
233a4a2c GM |
2518 | last_pos = first_pos; |
2519 | for (child = *forward; !NILP (child); child = c->next) | |
2520 | { | |
2521 | int new_size, old_size; | |
2522 | ||
2523 | c = XWINDOW (child); | |
2524 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2525 | new_size = old_size; | |
7ab12479 | 2526 | |
233a4a2c GM |
2527 | /* The top or left edge position of this child equals the |
2528 | bottom or right edge of its predecessor. */ | |
2529 | if (width_p) | |
2530 | c->left = make_number (last_pos); | |
2531 | else | |
2532 | c->top = make_number (last_pos); | |
7ab12479 | 2533 | |
233a4a2c GM |
2534 | /* If this child can be resized, do it. */ |
2535 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2536 | { | |
2537 | new_size = old_size + each + extra; | |
2538 | extra = 0; | |
2539 | } | |
2540 | ||
2541 | /* Set new height. Note that size_window also propagates | |
2542 | edge positions to children, so it's not a no-op if we | |
2543 | didn't change the child's size. */ | |
2544 | size_window (child, new_size, width_p, 1); | |
2545 | ||
2546 | /* Remember the bottom/right edge position of this child; it | |
2547 | will be used to set the top/left edge of the next child. */ | |
2548 | last_pos += new_size; | |
7ab12479 | 2549 | } |
233a4a2c GM |
2550 | |
2551 | /* We should have covered the parent exactly with child windows. */ | |
2552 | xassert (size == last_pos - first_pos); | |
2553 | ||
7ab12479 | 2554 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2555 | if (!nodelete_p) |
2556 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2557 | { |
233a4a2c GM |
2558 | int child_size; |
2559 | c = XWINDOW (child); | |
8b6d9dc9 | 2560 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
233a4a2c | 2561 | size_window (child, child_size, width_p, 0); |
7ab12479 JB |
2562 | } |
2563 | } | |
2564 | } | |
2565 | ||
233a4a2c GM |
2566 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2567 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2568 | that become too small in the process. (The caller should check | |
2569 | later and do so if appropriate.) */ | |
7ab12479 | 2570 | |
5e14b1fc | 2571 | void |
233a4a2c | 2572 | set_window_height (window, height, nodelete) |
7ab12479 | 2573 | Lisp_Object window; |
233a4a2c | 2574 | int height; |
7ab12479 JB |
2575 | int nodelete; |
2576 | { | |
233a4a2c GM |
2577 | size_window (window, height, 0, nodelete); |
2578 | } | |
7ab12479 | 2579 | |
7ab12479 | 2580 | |
233a4a2c GM |
2581 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2582 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2583 | that become too small in the process. (The caller should check | |
2584 | later and do so if appropriate.) */ | |
7ab12479 | 2585 | |
233a4a2c GM |
2586 | void |
2587 | set_window_width (window, width, nodelete) | |
2588 | Lisp_Object window; | |
2589 | int width; | |
2590 | int nodelete; | |
2591 | { | |
2592 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2593 | } |
233a4a2c | 2594 | |
7ab12479 | 2595 | \f |
1d8d96fa | 2596 | int window_select_count; |
7ab12479 | 2597 | |
5b03d3c0 RS |
2598 | Lisp_Object |
2599 | Fset_window_buffer_unwind (obuf) | |
2600 | Lisp_Object obuf; | |
2601 | { | |
2602 | Fset_buffer (obuf); | |
2603 | return Qnil; | |
2604 | } | |
2605 | ||
7ab12479 | 2606 | |
5500c422 GM |
2607 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2608 | means it's allowed to run hooks. See make_frame for a case where | |
2609 | it's not allowed. */ | |
7ab12479 | 2610 | |
5500c422 GM |
2611 | void |
2612 | set_window_buffer (window, buffer, run_hooks_p) | |
2613 | Lisp_Object window, buffer; | |
2614 | int run_hooks_p; | |
2615 | { | |
2616 | struct window *w = XWINDOW (window); | |
2617 | struct buffer *b = XBUFFER (buffer); | |
2618 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2619 | |
2620 | w->buffer = buffer; | |
86e48436 RS |
2621 | |
2622 | if (EQ (window, selected_window)) | |
5500c422 | 2623 | b->last_selected_window = window; |
beb4e312 RS |
2624 | |
2625 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2626 | if (INTEGERP (b->display_count)) |
2627 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2628 | b->display_time = Fcurrent_time (); | |
86e48436 | 2629 | |
d834a2e9 | 2630 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2631 | XSETFASTINT (w->window_end_vpos, 0); |
2632 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2633 | w->window_end_valid = Qnil; |
1c686c99 | 2634 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 2635 | w->vscroll = 0; |
5500c422 | 2636 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2637 | set_marker_restricted (w->start, |
5500c422 | 2638 | make_number (b->last_window_start), |
7ab12479 JB |
2639 | buffer); |
2640 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2641 | w->force_start = Qnil; |
d834a2e9 | 2642 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2643 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2644 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2645 | |
2646 | /* We must select BUFFER for running the window-scroll-functions. | |
2647 | If WINDOW is selected, switch permanently. | |
2648 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2649 | if (EQ (window, selected_window)) |
2650 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2651 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2652 | because that might itself be a local variable. */ | |
2653 | else if (window_initialized) | |
2654 | { | |
2655 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2656 | Fset_buffer (buffer); | |
2657 | } | |
2658 | ||
5500c422 | 2659 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2660 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2661 | |
5500c422 GM |
2662 | if (run_hooks_p) |
2663 | { | |
2664 | if (! NILP (Vwindow_scroll_functions)) | |
2665 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2666 | Fmarker_position (w->start)); | |
2667 | ||
2668 | if (! NILP (Vwindow_configuration_change_hook) | |
2669 | && ! NILP (Vrun_hooks)) | |
2670 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2671 | } | |
543f5fb1 | 2672 | |
5b03d3c0 | 2673 | unbind_to (count, Qnil); |
5500c422 | 2674 | } |
5b03d3c0 | 2675 | |
5500c422 GM |
2676 | |
2677 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
2678 | "Make WINDOW display BUFFER as its contents.\n\ | |
2679 | BUFFER can be a buffer or buffer name.") | |
2680 | (window, buffer) | |
2681 | register Lisp_Object window, buffer; | |
2682 | { | |
2683 | register Lisp_Object tem; | |
2684 | register struct window *w = decode_window (window); | |
5500c422 | 2685 | |
bed0c171 | 2686 | XSETWINDOW (window, w); |
5500c422 GM |
2687 | buffer = Fget_buffer (buffer); |
2688 | CHECK_BUFFER (buffer, 1); | |
2689 | ||
2690 | if (NILP (XBUFFER (buffer)->name)) | |
2691 | error ("Attempt to display deleted buffer"); | |
2692 | ||
2693 | tem = w->buffer; | |
2694 | if (NILP (tem)) | |
2695 | error ("Window is deleted"); | |
2696 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2697 | is first being set up. */ | |
2698 | { | |
2699 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2700 | error ("Window is dedicated to `%s'", | |
2701 | XSTRING (XBUFFER (tem)->name)->data); | |
2702 | ||
2703 | unshow_buffer (w); | |
2704 | } | |
2705 | ||
2706 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2707 | return Qnil; |
2708 | } | |
2709 | ||
2710 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
2711 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
beb4e312 RS |
2712 | If WINDOW is not already selected, also make WINDOW's buffer current.\n\ |
2713 | Note that the main editor command loop\n\ | |
2714 | selects the buffer of the selected window before each command.") | |
7ab12479 JB |
2715 | (window) |
2716 | register Lisp_Object window; | |
b7354ddf RS |
2717 | { |
2718 | return select_window_1 (window, 1); | |
2719 | } | |
2720 | \f | |
719eaeb1 GM |
2721 | /* Note that selected_window can be nil |
2722 | when this is called from Fset_window_configuration. */ | |
2723 | ||
b7354ddf RS |
2724 | static Lisp_Object |
2725 | select_window_1 (window, recordflag) | |
2726 | register Lisp_Object window; | |
2727 | int recordflag; | |
7ab12479 JB |
2728 | { |
2729 | register struct window *w; | |
719eaeb1 | 2730 | register struct window *ow; |
1ae1a37d | 2731 | struct frame *sf; |
7ab12479 | 2732 | |
605be8af | 2733 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2734 | |
2735 | w = XWINDOW (window); | |
2736 | ||
265a9e55 | 2737 | if (NILP (w->buffer)) |
7ab12479 JB |
2738 | error ("Trying to select deleted window or non-leaf window"); |
2739 | ||
d834a2e9 | 2740 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2741 | if (EQ (window, selected_window)) |
2742 | return window; | |
2743 | ||
719eaeb1 GM |
2744 | if (!NILP (selected_window)) |
2745 | { | |
2746 | ow = XWINDOW (selected_window); | |
2747 | if (! NILP (ow->buffer)) | |
2748 | set_marker_both (ow->pointm, ow->buffer, | |
2749 | BUF_PT (XBUFFER (ow->buffer)), | |
2750 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2751 | } | |
7ab12479 JB |
2752 | |
2753 | selected_window = window; | |
1ae1a37d GM |
2754 | sf = SELECTED_FRAME (); |
2755 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2756 | { |
44fa5b1e | 2757 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2758 | /* Use this rather than Fhandle_switch_frame |
2759 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2760 | move around in the state where a minibuffer in a separate | |
2761 | frame is active. */ | |
2762 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2763 | } |
2764 | else | |
1ae1a37d | 2765 | sf->selected_window = window; |
7ab12479 | 2766 | |
b7354ddf RS |
2767 | if (recordflag) |
2768 | record_buffer (w->buffer); | |
7ab12479 JB |
2769 | Fset_buffer (w->buffer); |
2770 | ||
86e48436 RS |
2771 | XBUFFER (w->buffer)->last_selected_window = window; |
2772 | ||
7ab12479 JB |
2773 | /* Go to the point recorded in the window. |
2774 | This is important when the buffer is in more | |
2775 | than one window. It also matters when | |
2776 | redisplay_window has altered point after scrolling, | |
2777 | because it makes the change only in the window. */ | |
2778 | { | |
2779 | register int new_point = marker_position (w->pointm); | |
2780 | if (new_point < BEGV) | |
2781 | SET_PT (BEGV); | |
a9c95e08 | 2782 | else if (new_point > ZV) |
7ab12479 JB |
2783 | SET_PT (ZV); |
2784 | else | |
2785 | SET_PT (new_point); | |
2786 | } | |
2787 | ||
2788 | windows_or_buffers_changed++; | |
2789 | return window; | |
2790 | } | |
b7354ddf | 2791 | \f |
441a127e RS |
2792 | /* Deiconify the frame containing the window WINDOW, |
2793 | unless it is the selected frame; | |
2794 | then return WINDOW. | |
2795 | ||
2796 | The reason for the exception for the selected frame | |
2797 | is that it seems better not to change the selected frames visibility | |
2798 | merely because of displaying a different buffer in it. | |
2799 | The deiconification is useful when a buffer gets shown in | |
2800 | another frame that you were not using lately. */ | |
d07f802a RS |
2801 | |
2802 | static Lisp_Object | |
2803 | display_buffer_1 (window) | |
2804 | Lisp_Object window; | |
2805 | { | |
1ae1a37d GM |
2806 | Lisp_Object frame = XWINDOW (window)->frame; |
2807 | FRAME_PTR f = XFRAME (frame); | |
2808 | ||
d07f802a | 2809 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2810 | |
2811 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2812 | { |
2813 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2814 | Fmake_frame_visible (frame); |
37962e60 | 2815 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2816 | Fraise_frame (frame); |
60117126 | 2817 | } |
1ae1a37d | 2818 | |
d07f802a RS |
2819 | return window; |
2820 | } | |
2821 | ||
4628f7a4 | 2822 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2823 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2824 | The value is actually t if the frame should be called with default frame\n\ | |
2825 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2826 | See `special-display-buffer-names', and `special-display-regexps'.") |
2827 | (buffer_name) | |
2828 | Lisp_Object buffer_name; | |
2829 | { | |
2830 | Lisp_Object tem; | |
2831 | ||
2832 | CHECK_STRING (buffer_name, 1); | |
2833 | ||
2834 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2835 | if (!NILP (tem)) | |
2836 | return Qt; | |
2837 | ||
2838 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2839 | if (!NILP (tem)) | |
2840 | return XCDR (tem); | |
2841 | ||
2842 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2843 | { | |
2844 | Lisp_Object car = XCAR (tem); | |
2845 | if (STRINGP (car) | |
2846 | && fast_string_match (car, buffer_name) >= 0) | |
2847 | return Qt; | |
2848 | else if (CONSP (car) | |
2849 | && STRINGP (XCAR (car)) | |
2850 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2851 | return XCDR (car); |
4628f7a4 EN |
2852 | } |
2853 | return Qnil; | |
2854 | } | |
2855 | ||
2856 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2857 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2858 | See `same-window-buffer-names' and `same-window-regexps'.") |
2859 | (buffer_name) | |
2860 | Lisp_Object buffer_name; | |
2861 | { | |
2862 | Lisp_Object tem; | |
2863 | ||
2864 | CHECK_STRING (buffer_name, 1); | |
2865 | ||
2866 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2867 | if (!NILP (tem)) | |
2868 | return Qt; | |
2869 | ||
2870 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2871 | if (!NILP (tem)) | |
2872 | return Qt; | |
2873 | ||
2874 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2875 | { | |
2876 | Lisp_Object car = XCAR (tem); | |
2877 | if (STRINGP (car) | |
2878 | && fast_string_match (car, buffer_name) >= 0) | |
2879 | return Qt; | |
2880 | else if (CONSP (car) | |
2881 | && STRINGP (XCAR (car)) | |
2882 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2883 | return Qt; | |
2884 | } | |
2885 | return Qnil; | |
2886 | } | |
2887 | ||
53f76081 RS |
2888 | /* Use B so the default is (other-buffer). */ |
2889 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, | |
2890 | "BDisplay buffer: \nP", | |
7ab12479 JB |
2891 | "Make BUFFER appear in some window but don't select it.\n\ |
2892 | BUFFER can be a buffer or a buffer name.\n\ | |
2893 | If BUFFER is shown already in some window, just use that one,\n\ | |
2894 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2895 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2896 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 | 2897 | Returns the window displaying BUFFER.\n\ |
9c3da604 GM |
2898 | If `display-reuse-frames' is non-nil, and another frame is currently\n\ |
2899 | displaying BUFFER, then simply raise that frame.\n\ | |
5abcf432 RS |
2900 | \n\ |
2901 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2902 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
53f76081 RS |
2903 | buffer names are handled.\n\ |
2904 | \n\ | |
2905 | If optional argument FRAME is `visible', search all visible frames.\n\ | |
2906 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2907 | If FRAME is t, search all frames.\n\ | |
2908 | If FRAME is a frame, search only that frame.\n\ | |
2909 | If FRAME is nil, search only the selected frame\n\ | |
2910 | (actually the last nonminibuffer frame),\n\ | |
32cf3ee0 | 2911 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,\n\ |
6529ed87 GM |
2912 | which means search visible and iconified frames.\n\ |
2913 | \n\ | |
2914 | If `even-window-heights' is non-nil, window heights will be evened out\n\ | |
e9ce2497 | 2915 | if displaying the buffer causes two vertically adjacent windows to be\n\ |
6529ed87 | 2916 | displayed.") |
53f76081 RS |
2917 | (buffer, not_this_window, frame) |
2918 | register Lisp_Object buffer, not_this_window, frame; | |
7ab12479 | 2919 | { |
aee631c2 | 2920 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2921 | struct frame *f; |
7ab12479 | 2922 | |
aee631c2 | 2923 | swp = Qnil; |
7ab12479 JB |
2924 | buffer = Fget_buffer (buffer); |
2925 | CHECK_BUFFER (buffer, 0); | |
2926 | ||
265a9e55 | 2927 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2928 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2929 | ||
265a9e55 | 2930 | if (NILP (not_this_window) |
7ab12479 | 2931 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2932 | return display_buffer_1 (selected_window); |
7ab12479 | 2933 | |
855d8627 RS |
2934 | /* See if the user has specified this buffer should appear |
2935 | in the selected window. */ | |
2936 | if (NILP (not_this_window)) | |
2937 | { | |
aee631c2 RS |
2938 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2939 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2940 | { |
2941 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2942 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2943 | } |
855d8627 RS |
2944 | } |
2945 | ||
9c3da604 | 2946 | /* If the user wants pop-up-frames or display-reuse-frames, then |
73dc5198 KH |
2947 | look for a window showing BUFFER on any visible or iconified frame. |
2948 | Otherwise search only the current frame. */ | |
53f76081 RS |
2949 | if (! NILP (frame)) |
2950 | tem = frame; | |
9c3da604 GM |
2951 | else if (pop_up_frames |
2952 | || display_buffer_reuse_frames | |
2953 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2954 | XSETFASTINT (tem, 0); |
2955 | else | |
73dc5198 | 2956 | XSETFRAME (tem, last_nonminibuf_frame); |
9c3da604 | 2957 | |
73dc5198 | 2958 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
2959 | if (!NILP (window) |
2960 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 2961 | return display_buffer_1 (window); |
7ab12479 | 2962 | |
a90712c2 | 2963 | /* Certain buffer names get special handling. */ |
aee631c2 | 2964 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2965 | { |
4628f7a4 EN |
2966 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2967 | if (EQ (tem, Qt)) | |
a90712c2 | 2968 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2969 | if (CONSP (tem)) |
2970 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2971 | } |
2972 | ||
44fa5b1e JB |
2973 | /* If there are no frames open that have more than a minibuffer, |
2974 | we need to create a new frame. */ | |
2975 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2976 | { |
a90712c2 | 2977 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2978 | Fset_window_buffer (window, buffer); |
d07f802a | 2979 | return display_buffer_1 (window); |
7ab12479 | 2980 | } |
7ab12479 | 2981 | |
1ae1a37d | 2982 | f = SELECTED_FRAME (); |
43bad991 | 2983 | if (pop_up_windows |
1ae1a37d | 2984 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2985 | /* If the current frame is a special display frame, |
2986 | don't try to reuse its windows. */ | |
1ae1a37d | 2987 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2988 | { |
12cae7c0 KH |
2989 | Lisp_Object frames; |
2990 | ||
37962e60 | 2991 | frames = Qnil; |
1ae1a37d | 2992 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2993 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2994 | /* Don't try to create a window if would get an error */ |
2995 | if (split_height_threshold < window_min_height << 1) | |
2996 | split_height_threshold = window_min_height << 1; | |
2997 | ||
cee67da9 RS |
2998 | /* Note that both Fget_largest_window and Fget_lru_window |
2999 | ignore minibuffers and dedicated windows. | |
3000 | This means they can return nil. */ | |
7ab12479 | 3001 | |
cee67da9 RS |
3002 | /* If the frame we would try to split cannot be split, |
3003 | try other frames. */ | |
1ae1a37d | 3004 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3005 | { |
3006 | /* Try visible frames first. */ | |
3007 | window = Fget_largest_window (Qvisible); | |
3008 | /* If that didn't work, try iconified frames. */ | |
3009 | if (NILP (window)) | |
3010 | window = Fget_largest_window (make_number (0)); | |
3011 | if (NILP (window)) | |
3012 | window = Fget_largest_window (Qt); | |
3013 | } | |
3014 | else | |
3015 | window = Fget_largest_window (frames); | |
3016 | ||
92cca945 RS |
3017 | /* If we got a tall enough full-width window that can be split, |
3018 | split it. */ | |
265a9e55 | 3019 | if (!NILP (window) |
92cca945 | 3020 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3021 | && window_height (window) >= split_height_threshold |
111e5992 | 3022 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3023 | window = Fsplit_window (window, Qnil, Qnil); |
3024 | else | |
3025 | { | |
1942f68f RS |
3026 | Lisp_Object upper, lower, other; |
3027 | ||
44fa5b1e | 3028 | window = Fget_lru_window (frames); |
92cca945 RS |
3029 | /* If the LRU window is selected, and big enough, |
3030 | and can be split, split it. */ | |
cee67da9 | 3031 | if (!NILP (window) |
92cca945 | 3032 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3033 | && (EQ (window, selected_window) |
3034 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3035 | && window_height (window) >= window_min_height << 1) |
3036 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3037 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3038 | |
cee67da9 | 3039 | /* Try visible frames first. */ |
48d9379d RS |
3040 | if (NILP (window)) |
3041 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3042 | if (NILP (window)) |
3043 | window = Fget_largest_window (Qvisible); | |
3044 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3045 | if (NILP (window)) |
3046 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3047 | if (NILP (window)) |
3048 | window = Fget_largest_window (make_number (0)); | |
3049 | /* Try invisible frames. */ | |
48d9379d RS |
3050 | if (NILP (window)) |
3051 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3052 | if (NILP (window)) |
3053 | window = Fget_largest_window (Qt); | |
3054 | /* As a last resort, make a new frame. */ | |
3055 | if (NILP (window)) | |
3056 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3057 | /* If window appears above or below another, |
3058 | even out their heights. */ | |
cac66e4f | 3059 | other = upper = lower = Qnil; |
1942f68f RS |
3060 | if (!NILP (XWINDOW (window)->prev)) |
3061 | other = upper = XWINDOW (window)->prev, lower = window; | |
3062 | if (!NILP (XWINDOW (window)->next)) | |
3063 | other = lower = XWINDOW (window)->next, upper = window; | |
3064 | if (!NILP (other) | |
6529ed87 | 3065 | && !NILP (Veven_window_heights) |
1942f68f | 3066 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
296b535c KH |
3067 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
3068 | && (XFASTINT (XWINDOW (other)->height) | |
3069 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 3070 | { |
296b535c KH |
3071 | int total = (XFASTINT (XWINDOW (other)->height) |
3072 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
3073 | enlarge_window (upper, |
3074 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 3075 | 0); |
1942f68f | 3076 | } |
7ab12479 JB |
3077 | } |
3078 | } | |
3079 | else | |
3080 | window = Fget_lru_window (Qnil); | |
3081 | ||
3082 | Fset_window_buffer (window, buffer); | |
d07f802a | 3083 | return display_buffer_1 (window); |
7ab12479 JB |
3084 | } |
3085 | ||
3086 | void | |
3087 | temp_output_buffer_show (buf) | |
3088 | register Lisp_Object buf; | |
3089 | { | |
3090 | register struct buffer *old = current_buffer; | |
3091 | register Lisp_Object window; | |
3092 | register struct window *w; | |
3093 | ||
bccd3dd1 RS |
3094 | XBUFFER (buf)->directory = current_buffer->directory; |
3095 | ||
7ab12479 | 3096 | Fset_buffer (buf); |
c6367666 | 3097 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3098 | BEGV = BEG; |
3099 | ZV = Z; | |
3100 | SET_PT (BEG); | |
b1599b4c | 3101 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
3102 | set_buffer_internal (old); |
3103 | ||
3104 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3105 | call1 (Vtemp_buffer_show_function, buf); | |
3106 | else | |
3107 | { | |
53f76081 | 3108 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3109 | |
1ae1a37d | 3110 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3111 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3112 | Vminibuf_scroll_window = window; |
3113 | w = XWINDOW (window); | |
d834a2e9 | 3114 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3115 | XSETFASTINT (w->min_hscroll, 0); |
b73ea88e RS |
3116 | set_marker_restricted_both (w->start, buf, 1, 1); |
3117 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3118 | |
beb4e312 RS |
3119 | /* Run temp-buffer-show-hook, with the chosen window selected |
3120 | and it sbuffer current. */ | |
f52cca03 | 3121 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3122 | { |
f52cca03 RS |
3123 | Lisp_Object tem; |
3124 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3125 | if (!NILP (tem)) |
3126 | { | |
f52cca03 RS |
3127 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3128 | if (!NILP (tem)) | |
3129 | { | |
3130 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
3131 | Lisp_Object prev_window; |
3132 | prev_window = selected_window; | |
2cccc823 | 3133 | |
f52cca03 | 3134 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 3135 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 3136 | select_window_1 (window, 0); |
beb4e312 | 3137 | Fset_buffer (w->buffer); |
f52cca03 | 3138 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 3139 | select_window_1 (prev_window, 0); |
f52cca03 RS |
3140 | unbind_to (count, Qnil); |
3141 | } | |
2cccc823 RS |
3142 | } |
3143 | } | |
3144 | } | |
7ab12479 JB |
3145 | } |
3146 | \f | |
dfcf069d | 3147 | static void |
7ab12479 JB |
3148 | make_dummy_parent (window) |
3149 | Lisp_Object window; | |
3150 | { | |
cffec418 | 3151 | Lisp_Object new; |
7ab12479 | 3152 | register struct window *o, *p; |
cffec418 | 3153 | int i; |
7ab12479 | 3154 | |
cffec418 | 3155 | o = XWINDOW (window); |
26605be9 | 3156 | p = allocate_window (); |
cffec418 | 3157 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3158 | ((struct Lisp_Vector *) p)->contents[i] |
3159 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3160 | XSETWINDOW (new, p); |
7ab12479 | 3161 | |
d834a2e9 | 3162 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3163 | |
3164 | /* Put new into window structure in place of window */ | |
3165 | replace_window (window, new); | |
3166 | ||
3167 | o->next = Qnil; | |
3168 | o->prev = Qnil; | |
3169 | o->vchild = Qnil; | |
3170 | o->hchild = Qnil; | |
3171 | o->parent = new; | |
3172 | ||
3173 | p->start = Qnil; | |
3174 | p->pointm = Qnil; | |
3175 | p->buffer = Qnil; | |
3176 | } | |
3177 | ||
3178 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
3179 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
3180 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 3181 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
10f96191 RS |
3182 | and put SIZE columns in the first of the pair. In that case,\n\ |
3183 | SIZE includes that window's scroll bar, or the divider column to its right.") | |
77ae0fe3 KH |
3184 | (window, size, horflag) |
3185 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
3186 | { |
3187 | register Lisp_Object new; | |
3188 | register struct window *o, *p; | |
c0807608 | 3189 | FRAME_PTR fo; |
77ae0fe3 | 3190 | register int size_int; |
7ab12479 | 3191 | |
265a9e55 | 3192 | if (NILP (window)) |
7ab12479 JB |
3193 | window = selected_window; |
3194 | else | |
605be8af | 3195 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
3196 | |
3197 | o = XWINDOW (window); | |
c0807608 | 3198 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3199 | |
77ae0fe3 | 3200 | if (NILP (size)) |
7ab12479 | 3201 | { |
265a9e55 | 3202 | if (!NILP (horflag)) |
c0807608 | 3203 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3204 | the usable space in columns by two. |
3205 | We round up, since the left-hand window may include | |
3206 | a dividing line, while the right-hand may not. */ | |
3207 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3208 | else |
77ae0fe3 | 3209 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3210 | } |
3211 | else | |
3212 | { | |
77ae0fe3 KH |
3213 | CHECK_NUMBER (size, 1); |
3214 | size_int = XINT (size); | |
7ab12479 JB |
3215 | } |
3216 | ||
3217 | if (MINI_WINDOW_P (o)) | |
3218 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3219 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3220 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3221 | |
a481b3ea | 3222 | check_min_window_sizes (); |
7ab12479 | 3223 | |
265a9e55 | 3224 | if (NILP (horflag)) |
7ab12479 | 3225 | { |
77ae0fe3 KH |
3226 | if (size_int < window_min_height) |
3227 | error ("Window height %d too small (after splitting)", size_int); | |
3228 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3229 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3230 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3231 | if (NILP (o->parent) |
3232 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3233 | { |
3234 | make_dummy_parent (window); | |
3235 | new = o->parent; | |
3236 | XWINDOW (new)->vchild = window; | |
3237 | } | |
3238 | } | |
3239 | else | |
3240 | { | |
77ae0fe3 KH |
3241 | if (size_int < window_min_width) |
3242 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3243 | |
3244 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3245 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3246 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3247 | if (NILP (o->parent) |
3248 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3249 | { |
3250 | make_dummy_parent (window); | |
3251 | new = o->parent; | |
3252 | XWINDOW (new)->hchild = window; | |
3253 | } | |
3254 | } | |
3255 | ||
3256 | /* Now we know that window's parent is a vertical combination | |
3257 | if we are dividing vertically, or a horizontal combination | |
3258 | if we are making side-by-side windows */ | |
3259 | ||
3260 | windows_or_buffers_changed++; | |
c0807608 | 3261 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3262 | new = make_window (); |
3263 | p = XWINDOW (new); | |
3264 | ||
44fa5b1e | 3265 | p->frame = o->frame; |
7ab12479 | 3266 | p->next = o->next; |
265a9e55 | 3267 | if (!NILP (p->next)) |
7ab12479 JB |
3268 | XWINDOW (p->next)->prev = new; |
3269 | p->prev = window; | |
3270 | o->next = new; | |
3271 | p->parent = o->parent; | |
3272 | p->buffer = Qt; | |
5500c422 GM |
3273 | p->window_end_valid = Qnil; |
3274 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3275 | |
44fa5b1e | 3276 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3277 | |
265a9e55 | 3278 | if (!NILP (horflag)) |
7ab12479 JB |
3279 | { |
3280 | p->height = o->height; | |
3281 | p->top = o->top; | |
a59fed7e | 3282 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3283 | XSETFASTINT (o->width, size_int); |
3284 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3285 | } |
3286 | else | |
3287 | { | |
3288 | p->left = o->left; | |
3289 | p->width = o->width; | |
77ae0fe3 KH |
3290 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3291 | XSETFASTINT (o->height, size_int); | |
3292 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3293 | } |
3294 | ||
5500c422 GM |
3295 | /* Adjust glyph matrices. */ |
3296 | adjust_glyphs (fo); | |
543f5fb1 | 3297 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3298 | return new; |
3299 | } | |
3300 | \f | |
3301 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
3302 | "Make current window ARG lines bigger.\n\ | |
5a72551e EZ |
3303 | From program, optional second arg non-nil means grow sideways ARG columns.\n\ |
3304 | Interactively, if an argument is not given, make the window one line bigger.") | |
413430c5 EN |
3305 | (arg, side) |
3306 | register Lisp_Object arg, side; | |
7ab12479 | 3307 | { |
413430c5 | 3308 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3309 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3310 | |
3311 | if (! NILP (Vwindow_configuration_change_hook)) | |
3312 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3313 | ||
7ab12479 JB |
3314 | return Qnil; |
3315 | } | |
3316 | ||
3317 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
3318 | "Make current window ARG lines smaller.\n\ | |
5a72551e EZ |
3319 | From program, optional second arg non-nil means shrink sideways arg columns.\n\ |
3320 | Interactively, if an argument is not given, make the window one line smaller.") | |
413430c5 EN |
3321 | (arg, side) |
3322 | register Lisp_Object arg, side; | |
7ab12479 | 3323 | { |
413430c5 | 3324 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3325 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3326 | |
3327 | if (! NILP (Vwindow_configuration_change_hook)) | |
3328 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3329 | ||
7ab12479 JB |
3330 | return Qnil; |
3331 | } | |
3332 | ||
3333 | int | |
3334 | window_height (window) | |
3335 | Lisp_Object window; | |
3336 | { | |
3337 | register struct window *p = XWINDOW (window); | |
3338 | return XFASTINT (p->height); | |
3339 | } | |
3340 | ||
3341 | int | |
3342 | window_width (window) | |
3343 | Lisp_Object window; | |
3344 | { | |
3345 | register struct window *p = XWINDOW (window); | |
3346 | return XFASTINT (p->width); | |
3347 | } | |
3348 | ||
c1636aa6 | 3349 | |
7ab12479 | 3350 | #define CURBEG(w) \ |
3578db3c | 3351 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3352 | |
3353 | #define CURSIZE(w) \ | |
3578db3c | 3354 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3355 | |
233a4a2c GM |
3356 | |
3357 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3358 | increase its width. Siblings of the selected window are resized to | |
3359 | fullfil the size request. If they become too small in the process, | |
3360 | they will be deleted. */ | |
7ab12479 | 3361 | |
f984d4fc | 3362 | static void |
86c8e823 GM |
3363 | enlarge_window (window, delta, widthflag) |
3364 | Lisp_Object window; | |
233a4a2c | 3365 | int delta, widthflag; |
7ab12479 | 3366 | { |
86c8e823 | 3367 | Lisp_Object parent, next, prev; |
233a4a2c | 3368 | struct window *p; |
3578db3c KR |
3369 | Lisp_Object *sizep; |
3370 | int maximum; | |
5e14b1fc AS |
3371 | int (*sizefun) P_ ((Lisp_Object)) |
3372 | = widthflag ? window_width : window_height; | |
233a4a2c | 3373 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3374 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3375 | |
233a4a2c GM |
3376 | /* Check values of window_min_width and window_min_height for |
3377 | validity. */ | |
a481b3ea | 3378 | check_min_window_sizes (); |
7ab12479 | 3379 | |
233a4a2c | 3380 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3381 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3382 | error ("Window is not resizable"); | |
3383 | ||
3384 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3385 | while (1) |
3386 | { | |
3387 | p = XWINDOW (window); | |
3388 | parent = p->parent; | |
233a4a2c | 3389 | |
265a9e55 | 3390 | if (NILP (parent)) |
7ab12479 JB |
3391 | { |
3392 | if (widthflag) | |
3393 | error ("No other window to side of this one"); | |
3394 | break; | |
3395 | } | |
233a4a2c GM |
3396 | |
3397 | if (widthflag | |
3398 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3399 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3400 | break; |
233a4a2c | 3401 | |
7ab12479 JB |
3402 | window = parent; |
3403 | } | |
3404 | ||
05c2896a | 3405 | sizep = &CURSIZE (window); |
7ab12479 | 3406 | |
7ab12479 JB |
3407 | { |
3408 | register int maxdelta; | |
7ab12479 | 3409 | |
3578db3c | 3410 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
c1636aa6 GM |
3411 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3412 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3413 | widthflag, 0, 0)) |
c1636aa6 GM |
3414 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3415 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3416 | widthflag, 0, 0)) |
44fa5b1e JB |
3417 | /* This is a frame with only one window, a minibuffer-only |
3418 | or a minibufferless frame. */ | |
d5783c40 | 3419 | : (delta = 0)); |
7ab12479 JB |
3420 | |
3421 | if (delta > maxdelta) | |
3422 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3423 | the full frame, or make the only window aside from the |
3424 | minibuffer the full frame. */ | |
7ab12479 | 3425 | delta = maxdelta; |
6b54027b | 3426 | } |
d5783c40 | 3427 | |
3578db3c | 3428 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3429 | { |
543f5fb1 | 3430 | delete_window (window); |
d5783c40 | 3431 | return; |
6b54027b RS |
3432 | } |
3433 | ||
3434 | if (delta == 0) | |
3435 | return; | |
7ab12479 | 3436 | |
db98a733 RS |
3437 | /* Find the total we can get from other siblings. */ |
3438 | maximum = 0; | |
3439 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3440 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3441 | widthflag, 0, 0); |
db98a733 | 3442 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3443 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3444 | widthflag, 0, 0); |
db98a733 RS |
3445 | |
3446 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3447 | if (delta <= maximum) |
7ab12479 | 3448 | { |
db98a733 RS |
3449 | Lisp_Object first_unaffected; |
3450 | Lisp_Object first_affected; | |
233a4a2c | 3451 | int fixed_p; |
db98a733 RS |
3452 | |
3453 | next = p->next; | |
3454 | prev = p->prev; | |
3455 | first_affected = window; | |
3456 | /* Look at one sibling at a time, | |
3457 | moving away from this window in both directions alternately, | |
3458 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3459 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3460 | { |
db98a733 RS |
3461 | if (! NILP (next)) |
3462 | { | |
c1636aa6 | 3463 | int this_one = ((*sizefun) (next) |
233a4a2c | 3464 | - window_min_size (XWINDOW (next), |
f984d4fc | 3465 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3466 | if (!fixed_p) |
3467 | { | |
3468 | if (this_one > delta) | |
3469 | this_one = delta; | |
3470 | ||
3471 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3472 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3473 | |
233a4a2c GM |
3474 | delta -= this_one; |
3475 | } | |
3476 | ||
db98a733 RS |
3477 | next = XWINDOW (next)->next; |
3478 | } | |
233a4a2c | 3479 | |
db98a733 RS |
3480 | if (delta == 0) |
3481 | break; | |
233a4a2c | 3482 | |
db98a733 RS |
3483 | if (! NILP (prev)) |
3484 | { | |
c1636aa6 | 3485 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3486 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3487 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3488 | if (!fixed_p) |
3489 | { | |
3490 | if (this_one > delta) | |
3491 | this_one = delta; | |
3492 | ||
3493 | first_affected = prev; | |
3494 | ||
3495 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3496 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3497 | |
3498 | delta -= this_one; | |
3499 | } | |
3500 | ||
db98a733 RS |
3501 | prev = XWINDOW (prev)->prev; |
3502 | } | |
3503 | } | |
3504 | ||
233a4a2c GM |
3505 | xassert (delta == 0); |
3506 | ||
db98a733 RS |
3507 | /* Now recalculate the edge positions of all the windows affected, |
3508 | based on the new sizes. */ | |
3509 | first_unaffected = next; | |
3510 | prev = first_affected; | |
3511 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3512 | prev = next, next = XWINDOW (next)->next) | |
3513 | { | |
3578db3c | 3514 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3515 | /* This does not change size of NEXT, |
3516 | but it propagates the new top edge to its children */ | |
3517 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3518 | } | |
7ab12479 JB |
3519 | } |
3520 | else | |
3521 | { | |
3522 | register int delta1; | |
3523 | register int opht = (*sizefun) (parent); | |
3524 | ||
3525 | /* If trying to grow this window to or beyond size of the parent, | |
3526 | make delta1 so big that, on shrinking back down, | |
3527 | all the siblings end up with less than one line and are deleted. */ | |
3578db3c | 3528 | if (opht <= XINT (*sizep) + delta) |
7ab12479 | 3529 | delta1 = opht * opht * 2; |
7ab12479 | 3530 | else |
233a4a2c GM |
3531 | { |
3532 | /* Otherwise, make delta1 just right so that if we add | |
3533 | delta1 lines to this window and to the parent, and then | |
3534 | shrink the parent back to its original size, the new | |
3535 | proportional size of this window will increase by delta. | |
3536 | ||
3537 | The function size_window will compute the new height h' | |
3538 | of the window from delta1 as: | |
3539 | ||
3540 | e = delta1/n | |
3541 | x = delta1 - delta1/n * n for the 1st resizable child | |
3542 | h' = h + e + x | |
3543 | ||
3544 | where n is the number of children that can be resized. | |
3545 | We can ignore x by choosing a delta1 that is a multiple of | |
3546 | n. We want the height of this window to come out as | |
3547 | ||
3548 | h' = h + delta | |
3549 | ||
3550 | So, delta1 must be | |
3551 | ||
3552 | h + e = h + delta | |
3553 | delta1/n = delta | |
3554 | delta1 = n * delta. | |
3555 | ||
3556 | The number of children n rquals the number of resizable | |
3557 | children of this window + 1 because we know window itself | |
3558 | is resizable (otherwise we would have signalled an error. */ | |
3559 | ||
3560 | struct window *w = XWINDOW (window); | |
3561 | Lisp_Object s; | |
3562 | int n = 1; | |
3563 | ||
3564 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3565 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3566 | ++n; | |
3567 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3568 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3569 | ++n; | |
3570 | ||
3571 | delta1 = n * delta; | |
3572 | } | |
7ab12479 JB |
3573 | |
3574 | /* Add delta1 lines or columns to this window, and to the parent, | |
3575 | keeping things consistent while not affecting siblings. */ | |
3578db3c KR |
3576 | XSETINT (CURSIZE (parent), opht + delta1); |
3577 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
7ab12479 JB |
3578 | |
3579 | /* Squeeze out delta1 lines or columns from our parent, | |
3580 | shriking this window and siblings proportionately. | |
3581 | This brings parent back to correct size. | |
3582 | Delta1 was calculated so this makes this window the desired size, | |
3583 | taking it all out of the siblings. */ | |
3584 | (*setsizefun) (parent, opht, 0); | |
3585 | } | |
3586 | ||
d834a2e9 | 3587 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3588 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3589 | |
3590 | /* Adjust glyph matrices. */ | |
3591 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3592 | } |
c1636aa6 | 3593 | |
7ab12479 JB |
3594 | #undef CURBEG |
3595 | #undef CURSIZE | |
3596 | ||
5500c422 | 3597 | |
f984d4fc GM |
3598 | \f |
3599 | /*********************************************************************** | |
3600 | Resizing Mini-Windows | |
3601 | ***********************************************************************/ | |
3602 | ||
3603 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3604 | |
43b4a21f GM |
3605 | enum save_restore_action |
3606 | { | |
3607 | CHECK_ORIG_SIZES, | |
3608 | SAVE_ORIG_SIZES, | |
3609 | RESTORE_ORIG_SIZES | |
3610 | }; | |
3611 | ||
3612 | static int save_restore_orig_size P_ ((struct window *, | |
3613 | enum save_restore_action)); | |
f984d4fc GM |
3614 | |
3615 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3616 | from lowest windows first. */ | |
3617 | ||
3618 | static void | |
3619 | shrink_window_lowest_first (w, height) | |
3620 | struct window *w; | |
3621 | int height; | |
3622 | { | |
3623 | struct window *c; | |
3624 | Lisp_Object child; | |
3625 | int old_height; | |
3626 | ||
3627 | xassert (!MINI_WINDOW_P (w)); | |
3628 | ||
3629 | /* Set redisplay hints. */ | |
3630 | XSETFASTINT (w->last_modified, 0); | |
3631 | XSETFASTINT (w->last_overlay_modified, 0); | |
3632 | windows_or_buffers_changed++; | |
3633 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3634 | ||
3635 | old_height = XFASTINT (w->height); | |
3636 | XSETFASTINT (w->height, height); | |
3637 | ||
3638 | if (!NILP (w->hchild)) | |
3639 | { | |
3640 | for (child = w->hchild; !NILP (child); child = c->next) | |
3641 | { | |
3642 | c = XWINDOW (child); | |
3643 | c->top = w->top; | |
3644 | shrink_window_lowest_first (c, height); | |
3645 | } | |
3646 | } | |
3647 | else if (!NILP (w->vchild)) | |
3648 | { | |
3649 | Lisp_Object last_child; | |
3650 | int delta = old_height - height; | |
3651 | int last_top; | |
6bbd7a29 GM |
3652 | |
3653 | last_child = Qnil; | |
f984d4fc GM |
3654 | |
3655 | /* Find the last child. We are taking space from lowest windows | |
3656 | first, so we iterate over children from the last child | |
3657 | backwards. */ | |
3658 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3659 | last_child = child; | |
3660 | ||
3661 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3662 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3663 | { | |
3664 | int this_one; | |
3665 | ||
3666 | c = XWINDOW (child); | |
3667 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3668 | ||
3669 | if (this_one > delta) | |
3670 | this_one = delta; | |
3671 | ||
3672 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3673 | delta -= this_one; | |
3674 | } | |
3675 | ||
3676 | /* Compute new positions. */ | |
3578db3c | 3677 | last_top = XINT (w->top); |
f984d4fc GM |
3678 | for (child = w->vchild; !NILP (child); child = c->next) |
3679 | { | |
3680 | c = XWINDOW (child); | |
3681 | c->top = make_number (last_top); | |
3682 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3683 | last_top += XFASTINT (c->height); | |
3684 | } | |
3685 | } | |
3686 | } | |
3687 | ||
3688 | ||
43b4a21f GM |
3689 | /* Save, restore, or check positions and sizes in the window tree |
3690 | rooted at W. ACTION says what to do. | |
f984d4fc | 3691 | |
43b4a21f GM |
3692 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3693 | members are valid for all windows in the window tree. Value is | |
3694 | non-zero if they are valid. | |
3695 | ||
3696 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3697 | orig_top and orig_height for all windows in the tree. | |
3698 | ||
3699 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3700 | values stored in orig_top and orig_height for all windows. */ | |
3701 | ||
3702 | static int | |
3703 | save_restore_orig_size (w, action) | |
f984d4fc | 3704 | struct window *w; |
43b4a21f | 3705 | enum save_restore_action action; |
f984d4fc | 3706 | { |
43b4a21f GM |
3707 | int success_p = 1; |
3708 | ||
f984d4fc GM |
3709 | while (w) |
3710 | { | |
3711 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3712 | { |
3713 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3714 | success_p = 0; | |
3715 | } | |
f984d4fc | 3716 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3717 | { |
3718 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3719 | success_p = 0; | |
3720 | } | |
f984d4fc | 3721 | |
43b4a21f | 3722 | switch (action) |
f984d4fc | 3723 | { |
43b4a21f GM |
3724 | case CHECK_ORIG_SIZES: |
3725 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3726 | return 0; | |
3727 | break; | |
3728 | ||
3729 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3730 | w->orig_top = w->top; |
3731 | w->orig_height = w->height; | |
43b4a21f GM |
3732 | XSETFASTINT (w->last_modified, 0); |
3733 | XSETFASTINT (w->last_overlay_modified, 0); | |
3734 | break; | |
3735 | ||
3736 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3737 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3738 | w->top = w->orig_top; | |
3739 | w->height = w->orig_height; | |
3740 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3741 | XSETFASTINT (w->last_modified, 0); |
3742 | XSETFASTINT (w->last_overlay_modified, 0); | |
3743 | break; | |
3744 | ||
3745 | default: | |
3746 | abort (); | |
f984d4fc | 3747 | } |
43b4a21f | 3748 | |
f984d4fc GM |
3749 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3750 | } | |
43b4a21f GM |
3751 | |
3752 | return success_p; | |
f984d4fc GM |
3753 | } |
3754 | ||
3755 | ||
3756 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3757 | without deleting other windows. */ | |
3758 | ||
3759 | void | |
3760 | grow_mini_window (w, delta) | |
3761 | struct window *w; | |
3762 | int delta; | |
3763 | { | |
3764 | struct frame *f = XFRAME (w->frame); | |
3765 | struct window *root; | |
3766 | ||
3767 | xassert (MINI_WINDOW_P (w)); | |
3768 | xassert (delta >= 0); | |
3769 | ||
3770 | /* Check values of window_min_width and window_min_height for | |
3771 | validity. */ | |
3772 | check_min_window_sizes (); | |
3773 | ||
3774 | /* Compute how much we can enlarge the mini-window without deleting | |
3775 | other windows. */ | |
3776 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3777 | if (delta) | |
3778 | { | |
3779 | int min_height = window_min_size (root, 0, 0, 0); | |
3780 | if (XFASTINT (root->height) - delta < min_height) | |
3781 | delta = XFASTINT (root->height) - min_height; | |
3782 | } | |
3783 | ||
3784 | if (delta) | |
3785 | { | |
3786 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3787 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3788 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3789 | |
3790 | /* Shrink other windows. */ | |
3791 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3792 | ||
3793 | /* Grow the mini-window. */ | |
3578db3c | 3794 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3795 | w->height = make_number (XFASTINT (w->height) + delta); |
3796 | XSETFASTINT (w->last_modified, 0); | |
3797 | XSETFASTINT (w->last_overlay_modified, 0); | |
3798 | ||
3799 | adjust_glyphs (f); | |
3800 | } | |
3801 | } | |
3802 | ||
3803 | ||
86c8e823 GM |
3804 | /* Shrink mini-window W. If there is recorded info about window sizes |
3805 | before a call to grow_mini_window, restore recorded window sizes. | |
3806 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3807 | line. */ | |
f984d4fc GM |
3808 | |
3809 | void | |
3810 | shrink_mini_window (w) | |
3811 | struct window *w; | |
3812 | { | |
3813 | struct frame *f = XFRAME (w->frame); | |
3814 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3815 | ||
43b4a21f | 3816 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3817 | { |
43b4a21f | 3818 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3819 | adjust_glyphs (f); |
3820 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3821 | windows_or_buffers_changed = 1; | |
3822 | } | |
86c8e823 GM |
3823 | else if (XFASTINT (w->height) > 1) |
3824 | { | |
0130fe1a GM |
3825 | /* Distribute the additional lines of the mini-window |
3826 | among the other windows. */ | |
86c8e823 GM |
3827 | Lisp_Object window; |
3828 | XSETWINDOW (window, w); | |
3829 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3830 | } | |
f984d4fc GM |
3831 | } |
3832 | ||
3833 | ||
3834 | \f | |
5500c422 GM |
3835 | /* Mark window cursors off for all windows in the window tree rooted |
3836 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3837 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3838 | the frame are cleared. */ | |
3839 | ||
3840 | void | |
3841 | mark_window_cursors_off (w) | |
3842 | struct window *w; | |
3843 | { | |
3844 | while (w) | |
3845 | { | |
3846 | if (!NILP (w->hchild)) | |
3847 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3848 | else if (!NILP (w->vchild)) | |
3849 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3850 | else | |
3851 | w->phys_cursor_on_p = 0; | |
3852 | ||
3853 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3854 | } | |
3855 | } | |
3856 | ||
3857 | ||
e9c195b1 | 3858 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
3859 | |
3860 | int | |
3861 | window_internal_height (w) | |
3862 | struct window *w; | |
3863 | { | |
3864 | int ht = XFASTINT (w->height); | |
3865 | ||
e9c195b1 GM |
3866 | if (!MINI_WINDOW_P (w)) |
3867 | { | |
3868 | if (!NILP (w->parent) | |
3869 | || !NILP (w->vchild) | |
3870 | || !NILP (w->hchild) | |
3871 | || !NILP (w->next) | |
3872 | || !NILP (w->prev) | |
3873 | || WINDOW_WANTS_MODELINE_P (w)) | |
3874 | --ht; | |
7ab12479 | 3875 | |
e9c195b1 GM |
3876 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
3877 | --ht; | |
3878 | } | |
7ab12479 JB |
3879 | |
3880 | return ht; | |
3881 | } | |
3882 | ||
535e0b8e JB |
3883 | |
3884 | /* Return the number of columns in W. | |
a3c87d4e | 3885 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3886 | separating W from the sibling to its right. */ |
5500c422 | 3887 | |
535e0b8e JB |
3888 | int |
3889 | window_internal_width (w) | |
3890 | struct window *w; | |
3891 | { | |
5500c422 | 3892 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3893 | int width = XINT (w->width); |
3894 | ||
a3c87d4e | 3895 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3896 | /* Scroll bars occupy a few columns. */ |
3897 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3898 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3899 | /* The column of `|' characters separating side-by-side windows | |
3900 | occupies one column only. */ | |
3901 | width -= 1; | |
3902 | ||
3903 | /* On window-systems, areas to the left and right of the window | |
3904 | are used to display bitmaps there. */ | |
3905 | if (FRAME_WINDOW_P (f)) | |
b46dfc64 | 3906 | width -= FRAME_FLAGS_AREA_COLS (f); |
111e5992 RS |
3907 | |
3908 | return width; | |
535e0b8e JB |
3909 | } |
3910 | ||
5500c422 GM |
3911 | \f |
3912 | /************************************************************************ | |
3913 | Window Scrolling | |
3914 | ***********************************************************************/ | |
535e0b8e | 3915 | |
5500c422 | 3916 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 3917 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
3918 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
3919 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3920 | means don't signal an error if we try to move over BEGV or ZV, | |
3921 | respectively. */ | |
7ab12479 | 3922 | |
101d1605 RS |
3923 | static void |
3924 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3925 | Lisp_Object window; |
3926 | int n; | |
101d1605 | 3927 | int whole; |
f8026fd8 | 3928 | int noerror; |
5500c422 GM |
3929 | { |
3930 | /* If we must, use the pixel-based version which is much slower than | |
3931 | the line-based one but can handle varying line heights. */ | |
3932 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3933 | window_scroll_pixel_based (window, n, whole, noerror); | |
3934 | else | |
3935 | window_scroll_line_based (window, n, whole, noerror); | |
3936 | } | |
3937 | ||
3938 | ||
3939 | /* Implementation of window_scroll that works based on pixel line | |
3940 | heights. See the comment of window_scroll for parameter | |
3941 | descriptions. */ | |
3942 | ||
3943 | static void | |
3944 | window_scroll_pixel_based (window, n, whole, noerror) | |
3945 | Lisp_Object window; | |
3946 | int n; | |
3947 | int whole; | |
3948 | int noerror; | |
3949 | { | |
3950 | struct it it; | |
3951 | struct window *w = XWINDOW (window); | |
3952 | struct text_pos start; | |
3953 | Lisp_Object tem; | |
3954 | int this_scroll_margin; | |
3955 | int preserve_y; | |
5cdb3cf3 MB |
3956 | /* True if we fiddled the window vscroll field without really scrolling. */ |
3957 | int vscrolled = 0; | |
5500c422 GM |
3958 | |
3959 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3960 | ||
3961 | /* If PT is not visible in WINDOW, move back one half of | |
288d4e06 GM |
3962 | the screen. Allow PT to be partially visible, otherwise |
3963 | something like (scroll-down 1) with PT in the line before | |
3964 | the partially visible one would recenter. */ | |
3965 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
3966 | if (NILP (tem)) |
3967 | { | |
3968 | /* Move backward half the height of the window. Performance note: | |
3969 | vmotion used here is about 10% faster, but would give wrong | |
3970 | results for variable height lines. */ | |
3971 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3972 | it.current_y = it.last_visible_y; | |
202379cf | 3973 | move_it_vertically (&it, - window_box_height (w) / 2); |
5500c422 GM |
3974 | |
3975 | /* The function move_iterator_vertically may move over more than | |
3976 | the specified y-distance. If it->w is small, e.g. a | |
3977 | mini-buffer window, we may end up in front of the window's | |
3978 | display area. This is the case when Start displaying at the | |
3979 | start of the line containing PT in this case. */ | |
3980 | if (it.current_y <= 0) | |
3981 | { | |
3982 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3983 | move_it_vertically (&it, 0); | |
3984 | it.current_y = 0; | |
3985 | } | |
3986 | ||
3987 | start = it.current.pos; | |
3988 | } | |
3989 | ||
3990 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3991 | point in the same window line as it is now, so get that line. */ | |
3992 | if (!NILP (Vscroll_preserve_screen_position)) | |
3993 | { | |
3994 | start_display (&it, w, start); | |
3995 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3996 | preserve_y = it.current_y; | |
3997 | } | |
3998 | else | |
3999 | preserve_y = -1; | |
4000 | ||
4001 | /* Move iterator it from start the specified distance forward or | |
4002 | backward. The result is the new window start. */ | |
4003 | start_display (&it, w, start); | |
4004 | if (whole) | |
4005 | { | |
202379cf | 4006 | int screen_full = (window_box_height (w) |
5500c422 | 4007 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); |
d4e7cf01 | 4008 | int dy = n * screen_full; |
d72340d4 GM |
4009 | |
4010 | /* Note that move_it_vertically always moves the iterator to the | |
4011 | start of a line. So, if the last line doesn't have a newline, | |
4012 | we would end up at the start of the line ending at ZV. */ | |
4013 | if (dy <= 0) | |
4014 | move_it_vertically_backward (&it, -dy); | |
4015 | else if (dy > 0) | |
4016 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, | |
4017 | MOVE_TO_POS | MOVE_TO_Y); | |
5500c422 GM |
4018 | } |
4019 | else | |
4020 | move_it_by_lines (&it, n, 1); | |
4021 | ||
4022 | /* End if we end up at ZV or BEGV. */ | |
4023 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
4024 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
4025 | { | |
5cdb3cf3 MB |
4026 | if (IT_CHARPOS (it) == ZV) |
4027 | { | |
4028 | if (it.current_y + it.max_ascent + it.max_descent | |
4029 | > it.last_visible_y) | |
a74eca50 GM |
4030 | { |
4031 | /* The last line was only partially visible, make it fully | |
4032 | visible. */ | |
4033 | w->vscroll = (it.last_visible_y | |
4034 | - it.current_y + it.max_ascent + it.max_descent); | |
4035 | adjust_glyphs (it.f); | |
4036 | } | |
5cdb3cf3 MB |
4037 | else if (noerror) |
4038 | return; | |
4039 | else | |
4040 | Fsignal (Qend_of_buffer, Qnil); | |
4041 | } | |
5500c422 | 4042 | else |
5cdb3cf3 MB |
4043 | { |
4044 | if (w->vscroll != 0) | |
4045 | /* The first line was only partially visible, make it fully | |
4046 | visible. */ | |
4047 | w->vscroll = 0; | |
4048 | else if (noerror) | |
4049 | return; | |
4050 | else | |
4051 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4052 | } | |
4053 | ||
4054 | /* If control gets here, then we vscrolled. */ | |
4055 | ||
4056 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4057 | ||
4058 | /* Don't try to change the window start below. */ | |
4059 | vscrolled = 1; | |
5500c422 GM |
4060 | } |
4061 | ||
5cdb3cf3 MB |
4062 | if (! vscrolled) |
4063 | { | |
4064 | /* Set the window start, and set up the window for redisplay. */ | |
4065 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), | |
4066 | w->buffer); | |
4067 | w->start_at_line_beg = Fbolp (); | |
4068 | w->update_mode_line = Qt; | |
4069 | XSETFASTINT (w->last_modified, 0); | |
4070 | XSETFASTINT (w->last_overlay_modified, 0); | |
4071 | /* Set force_start so that redisplay_window will run the | |
4072 | window-scroll-functions. */ | |
4073 | w->force_start = Qt; | |
4074 | } | |
5500c422 GM |
4075 | |
4076 | it.current_y = it.vpos = 0; | |
4077 | ||
4078 | /* Preserve the screen position if we must. */ | |
4079 | if (preserve_y >= 0) | |
4080 | { | |
4081 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
4082 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4083 | } | |
4084 | else | |
4085 | { | |
4086 | /* Move PT out of scroll margins. */ | |
4087 | this_scroll_margin = max (0, scroll_margin); | |
4088 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
4089 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
4090 | ||
4091 | if (n > 0) | |
4092 | { | |
4093 | /* We moved the window start towards ZV, so PT may be now | |
4094 | in the scroll margin at the top. */ | |
4095 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4096 | while (it.current_y < this_scroll_margin) | |
4097 | move_it_by_lines (&it, 1, 1); | |
4098 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4099 | } | |
4100 | else if (n < 0) | |
4101 | { | |
5cdb3cf3 MB |
4102 | int charpos, bytepos; |
4103 | ||
5500c422 GM |
4104 | /* We moved the window start towards BEGV, so PT may be now |
4105 | in the scroll margin at the bottom. */ | |
4106 | move_it_to (&it, PT, -1, | |
4107 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4108 | MOVE_TO_POS | MOVE_TO_Y); | |
5cdb3cf3 MB |
4109 | |
4110 | /* Save our position, in case it's correct. */ | |
4111 | charpos = IT_CHARPOS (it); | |
4112 | bytepos = IT_BYTEPOS (it); | |
5500c422 | 4113 | |
5cdb3cf3 MB |
4114 | /* See if point is on a partially visible line at the end. */ |
4115 | move_it_by_lines (&it, 1, 1); | |
4116 | if (it.current_y > it.last_visible_y) | |
4117 | /* The last line was only partially visible, so back up two | |
4118 | lines to make sure we're on a fully visible line. */ | |
4119 | { | |
4120 | move_it_by_lines (&it, -2, 0); | |
4121 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4122 | } | |
4123 | else | |
4124 | /* No, the position we saved is OK, so use it. */ | |
4125 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4126 | } |
4127 | } | |
4128 | } | |
4129 | ||
4130 | ||
4131 | /* Implementation of window_scroll that works based on screen lines. | |
4132 | See the comment of window_scroll for parameter descriptions. */ | |
4133 | ||
4134 | static void | |
4135 | window_scroll_line_based (window, n, whole, noerror) | |
4136 | Lisp_Object window; | |
4137 | int n; | |
4138 | int whole; | |
4139 | int noerror; | |
7ab12479 JB |
4140 | { |
4141 | register struct window *w = XWINDOW (window); | |
5500c422 | 4142 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4143 | register int pos, pos_byte; |
7ab12479 JB |
4144 | register int ht = window_internal_height (w); |
4145 | register Lisp_Object tem; | |
4146 | int lose; | |
5500c422 | 4147 | Lisp_Object bolp; |
345d45b2 | 4148 | int startpos; |
101d1605 RS |
4149 | struct position posit; |
4150 | int original_vpos; | |
4151 | ||
d4e7cf01 GM |
4152 | /* If scrolling screen-fulls, compute the number of lines to |
4153 | scroll from the window's height. */ | |
4154 | if (whole) | |
4155 | n *= max (1, ht - next_screen_context_lines); | |
4156 | ||
101d1605 RS |
4157 | startpos = marker_position (w->start); |
4158 | ||
4159 | posit = *compute_motion (startpos, 0, 0, 0, | |
4160 | PT, ht, 0, | |
4161 | window_internal_width (w), XINT (w->hscroll), | |
4162 | 0, w); | |
4163 | original_vpos = posit.vpos; | |
0a1f771a | 4164 | |
d834a2e9 | 4165 | XSETFASTINT (tem, PT); |
6ffdb539 | 4166 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4167 | |
265a9e55 | 4168 | if (NILP (tem)) |
7ab12479 | 4169 | { |
cd2be1dd | 4170 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4171 | startpos = PT; |
7ab12479 JB |
4172 | } |
4173 | ||
345d45b2 | 4174 | SET_PT (startpos); |
5ce7b543 | 4175 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4176 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4177 | pos = PT; |
b73ea88e | 4178 | pos_byte = PT_BYTE; |
7ab12479 | 4179 | bolp = Fbolp (); |
b73ea88e | 4180 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4181 | |
4182 | if (lose) | |
f8026fd8 JB |
4183 | { |
4184 | if (noerror) | |
4185 | return; | |
4186 | else | |
4187 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4188 | } | |
7ab12479 JB |
4189 | |
4190 | if (pos < ZV) | |
7ab12479 | 4191 | { |
0c7da84e RS |
4192 | int this_scroll_margin = scroll_margin; |
4193 | ||
4194 | /* Don't use a scroll margin that is negative or too large. */ | |
4195 | if (this_scroll_margin < 0) | |
4196 | this_scroll_margin = 0; | |
4197 | ||
4198 | if (XINT (w->height) < 4 * scroll_margin) | |
4199 | this_scroll_margin = XINT (w->height) / 4; | |
4200 | ||
b73ea88e | 4201 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4202 | w->start_at_line_beg = bolp; |
4203 | w->update_mode_line = Qt; | |
d834a2e9 | 4204 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4205 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4206 | /* Set force_start so that redisplay_window will run |
4207 | the window-scroll-functions. */ | |
4208 | w->force_start = Qt; | |
0c7da84e | 4209 | |
5500c422 | 4210 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4211 | { |
b73ea88e | 4212 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4213 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4214 | } |
101d1605 RS |
4215 | /* If we scrolled forward, put point enough lines down |
4216 | that it is outside the scroll margin. */ | |
4217 | else if (n > 0) | |
0c7da84e | 4218 | { |
101d1605 RS |
4219 | int top_margin; |
4220 | ||
4221 | if (this_scroll_margin > 0) | |
4222 | { | |
b73ea88e | 4223 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4224 | Fvertical_motion (make_number (this_scroll_margin), window); |
4225 | top_margin = PT; | |
4226 | } | |
4227 | else | |
4228 | top_margin = pos; | |
4229 | ||
4230 | if (top_margin <= opoint) | |
b73ea88e | 4231 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4232 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4233 | { |
b73ea88e | 4234 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4235 | Fvertical_motion (make_number (original_vpos), window); |
4236 | } | |
9317a85d | 4237 | else |
335406fc | 4238 | SET_PT (top_margin); |
0c7da84e | 4239 | } |
101d1605 | 4240 | else if (n < 0) |
7ab12479 | 4241 | { |
101d1605 RS |
4242 | int bottom_margin; |
4243 | ||
0c7da84e RS |
4244 | /* If we scrolled backward, put point near the end of the window |
4245 | but not within the scroll margin. */ | |
b73ea88e | 4246 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4247 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4248 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4249 | bottom_margin = PT; | |
4250 | else | |
4251 | bottom_margin = PT + 1; | |
4252 | ||
4253 | if (bottom_margin > opoint) | |
b73ea88e | 4254 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4255 | else |
101d1605 | 4256 | { |
5500c422 | 4257 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4258 | { |
b73ea88e | 4259 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4260 | Fvertical_motion (make_number (original_vpos), window); |
4261 | } | |
4262 | else | |
4263 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4264 | } |
7ab12479 JB |
4265 | } |
4266 | } | |
4267 | else | |
f8026fd8 JB |
4268 | { |
4269 | if (noerror) | |
4270 | return; | |
4271 | else | |
4272 | Fsignal (Qend_of_buffer, Qnil); | |
4273 | } | |
7ab12479 | 4274 | } |
5500c422 GM |
4275 | |
4276 | ||
4277 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4278 | screen-full which is defined as the height of the window minus | |
4279 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4280 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4281 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4282 | |
4283 | static void | |
4284 | scroll_command (n, direction) | |
5500c422 | 4285 | Lisp_Object n; |
7ab12479 JB |
4286 | int direction; |
4287 | { | |
d4e7cf01 | 4288 | int count = BINDING_STACK_SIZE (); |
7ab12479 | 4289 | |
5500c422 GM |
4290 | xassert (abs (direction) == 1); |
4291 | ||
4292 | /* If selected window's buffer isn't current, make it current for | |
4293 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4294 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4295 | { |
4296 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4297 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4298 | |
4299 | /* Make redisplay consider other windows than just selected_window. */ | |
4300 | ++windows_or_buffers_changed; | |
95605e15 | 4301 | } |
7ab12479 | 4302 | |
265a9e55 | 4303 | if (NILP (n)) |
d4e7cf01 | 4304 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4305 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4306 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4307 | else |
4308 | { | |
4309 | n = Fprefix_numeric_value (n); | |
101d1605 | 4310 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4311 | } |
95605e15 JB |
4312 | |
4313 | unbind_to (count, Qnil); | |
7ab12479 JB |
4314 | } |
4315 | ||
4316 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
4317 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
4318 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 4319 | Negative ARG means scroll downward.\n\ |
dd394ff9 KH |
4320 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4321 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4322 | (arg) |
4323 | Lisp_Object arg; | |
7ab12479 | 4324 | { |
413430c5 | 4325 | scroll_command (arg, 1); |
7ab12479 JB |
4326 | return Qnil; |
4327 | } | |
4328 | ||
4329 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a5fcbc4e | 4330 | "Scroll text of current window down ARG lines; or near full screen if no ARG.\n\ |
7ab12479 | 4331 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
279e0e0c | 4332 | Negative ARG means scroll upward.\n\ |
dd394ff9 KH |
4333 | If ARG is the atom `-', scroll upward by nearly full screen.\n\ |
4334 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4335 | (arg) |
4336 | Lisp_Object arg; | |
7ab12479 | 4337 | { |
413430c5 | 4338 | scroll_command (arg, -1); |
7ab12479 JB |
4339 | return Qnil; |
4340 | } | |
ccd0664b RS |
4341 | \f |
4342 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
4343 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 4344 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
4345 | specifies the window.\n\ |
4346 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
4347 | showing that buffer is used.") | |
eb16ec06 | 4348 | () |
7ab12479 | 4349 | { |
ccd0664b | 4350 | Lisp_Object window; |
7ab12479 JB |
4351 | |
4352 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4353 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4354 | window = Vminibuf_scroll_window; |
4355 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4356 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4357 | { |
4358 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4359 | if (NILP (window)) |
53f76081 | 4360 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4361 | } |
4362 | else | |
dbc4e1c1 JB |
4363 | { |
4364 | /* Nothing specified; look for a neighboring window on the same | |
4365 | frame. */ | |
4366 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4367 | ||
4368 | if (EQ (window, selected_window)) | |
4369 | /* That didn't get us anywhere; look for a window on another | |
4370 | visible frame. */ | |
4371 | do | |
4372 | window = Fnext_window (window, Qnil, Qt); | |
4373 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4374 | && ! EQ (window, selected_window)); | |
4375 | } | |
4376 | ||
605be8af | 4377 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
4378 | |
4379 | if (EQ (window, selected_window)) | |
4380 | error ("There is no other window"); | |
4381 | ||
ccd0664b RS |
4382 | return window; |
4383 | } | |
4384 | ||
4385 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
4386 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
dd394ff9 | 4387 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
ccd0664b RS |
4388 | The next window is the one below the current one; or the one at the top\n\ |
4389 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
dd394ff9 KH |
4390 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4391 | When calling from a program, supply as argument a number, nil, or `-'.\n\ | |
ccd0664b RS |
4392 | \n\ |
4393 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
4394 | specifies the window to scroll.\n\ | |
4395 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
4396 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 | 4397 | (arg) |
d4e7cf01 | 4398 | Lisp_Object arg; |
ccd0664b | 4399 | { |
d4e7cf01 GM |
4400 | Lisp_Object window; |
4401 | struct window *w; | |
4402 | int count = BINDING_STACK_SIZE (); | |
ccd0664b RS |
4403 | |
4404 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4405 | w = XWINDOW (window); |
7ab12479 JB |
4406 | |
4407 | /* Don't screw up if window_scroll gets an error. */ | |
4408 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4409 | ++windows_or_buffers_changed; |
7ab12479 JB |
4410 | |
4411 | Fset_buffer (w->buffer); | |
4412 | SET_PT (marker_position (w->pointm)); | |
4413 | ||
413430c5 | 4414 | if (NILP (arg)) |
d4e7cf01 | 4415 | window_scroll (window, 1, 1, 1); |
413430c5 | 4416 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4417 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4418 | else |
4419 | { | |
413430c5 EN |
4420 | if (CONSP (arg)) |
4421 | arg = Fcar (arg); | |
4422 | CHECK_NUMBER (arg, 0); | |
101d1605 | 4423 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4424 | } |
4425 | ||
b73ea88e | 4426 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4427 | unbind_to (count, Qnil); |
7ab12479 JB |
4428 | |
4429 | return Qnil; | |
4430 | } | |
4431 | \f | |
644b477c | 4432 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
4433 | "Scroll selected window display ARG columns left.\n\ |
4434 | Default for ARG is window width minus 2.") | |
4435 | (arg) | |
4436 | register Lisp_Object arg; | |
4437 | { | |
c67fa410 GM |
4438 | Lisp_Object result; |
4439 | int hscroll; | |
4440 | struct window *w = XWINDOW (selected_window); | |
4441 | ||
265a9e55 | 4442 | if (NILP (arg)) |
c67fa410 | 4443 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4444 | else |
4445 | arg = Fprefix_numeric_value (arg); | |
4446 | ||
c67fa410 GM |
4447 | hscroll = XINT (w->hscroll) + XINT (arg); |
4448 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4449 | ||
f5686fbd | 4450 | if (interactive_p (0)) |
c67fa410 GM |
4451 | w->min_hscroll = w->hscroll; |
4452 | ||
4453 | return result; | |
7ab12479 JB |
4454 | } |
4455 | ||
644b477c | 4456 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
4457 | "Scroll selected window display ARG columns right.\n\ |
4458 | Default for ARG is window width minus 2.") | |
4459 | (arg) | |
4460 | register Lisp_Object arg; | |
4461 | { | |
c67fa410 GM |
4462 | Lisp_Object result; |
4463 | int hscroll; | |
4464 | struct window *w = XWINDOW (selected_window); | |
4465 | ||
265a9e55 | 4466 | if (NILP (arg)) |
c67fa410 | 4467 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4468 | else |
4469 | arg = Fprefix_numeric_value (arg); | |
4470 | ||
c67fa410 GM |
4471 | hscroll = XINT (w->hscroll) - XINT (arg); |
4472 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4473 | ||
f5686fbd | 4474 | if (interactive_p (0)) |
c67fa410 GM |
4475 | w->min_hscroll = w->hscroll; |
4476 | ||
4477 | return result; | |
7ab12479 JB |
4478 | } |
4479 | ||
12c8b416 GM |
4480 | /* Value is the number of lines actually displayed in window W, |
4481 | as opposed to its height. */ | |
4482 | ||
4483 | static int | |
4484 | displayed_window_lines (w) | |
4485 | struct window *w; | |
4486 | { | |
4487 | struct it it; | |
4488 | struct text_pos start; | |
4489 | int height = window_box_height (w); | |
4490 | struct buffer *old_buffer; | |
4491 | int bottom_y; | |
4492 | ||
4493 | if (XBUFFER (w->buffer) != current_buffer) | |
4494 | { | |
4495 | old_buffer = current_buffer; | |
4496 | set_buffer_internal (XBUFFER (w->buffer)); | |
4497 | } | |
4498 | else | |
4499 | old_buffer = NULL; | |
4500 | ||
521b203e GM |
4501 | /* In case W->start is out of the accessible range, do something |
4502 | reasonable. This happens in Info mode when Info-scroll-down | |
4503 | calls (recenter -1) while W->start is 1. */ | |
4504 | if (XMARKER (w->start)->charpos < BEGV) | |
4505 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4506 | else if (XMARKER (w->start)->charpos > ZV) | |
4507 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4508 | else | |
4509 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4510 | ||
12c8b416 GM |
4511 | start_display (&it, w, start); |
4512 | move_it_vertically (&it, height); | |
c8bc6f65 | 4513 | bottom_y = line_bottom_y (&it); |
12c8b416 GM |
4514 | |
4515 | /* Add in empty lines at the bottom of the window. */ | |
4516 | if (bottom_y < height) | |
4517 | { | |
c8bc6f65 GM |
4518 | int uy = CANON_Y_UNIT (it.f); |
4519 | it.vpos += (height - bottom_y + uy - 1) / uy; | |
12c8b416 GM |
4520 | } |
4521 | ||
c8bc6f65 GM |
4522 | if (old_buffer) |
4523 | set_buffer_internal (old_buffer); | |
4524 | ||
12c8b416 GM |
4525 | return it.vpos; |
4526 | } | |
4527 | ||
4528 | ||
7ab12479 | 4529 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
04212fcb RS |
4530 | "Center point in window and redisplay frame.\n\ |
4531 | With prefix argument ARG, recenter putting point on screen line ARG\n\ | |
4532 | relative to the current window. If ARG is negative, it counts up from the\n\ | |
4533 | bottom of the window. (ARG should be less than the height of the window.)\n\ | |
4534 | \n\ | |
4535 | If ARG is omitted or nil, erase the entire frame and then\n\ | |
4536 | redraw with point in the center of the current window.\n\ | |
4537 | Just C-u as prefix means put point in the center of the window\n\ | |
4538 | and redisplay normally--don't erase and redraw the frame.") | |
413430c5 EN |
4539 | (arg) |
4540 | register Lisp_Object arg; | |
7ab12479 | 4541 | { |
6df47b59 | 4542 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
4543 | struct buffer *buf = XBUFFER (w->buffer); |
4544 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
4545 | int center_p = 0; |
4546 | int charpos, bytepos; | |
7ab12479 | 4547 | |
413430c5 | 4548 | if (NILP (arg)) |
7ab12479 | 4549 | { |
f02d6d5c KH |
4550 | int i; |
4551 | ||
4552 | /* Invalidate pixel data calculated for all compositions. */ | |
4553 | for (i = 0; i < n_compositions; i++) | |
4554 | composition_table[i]->font = NULL; | |
7ab12479 | 4555 | |
527b6458 | 4556 | Fredraw_frame (w->frame); |
44fa5b1e | 4557 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 4558 | center_p = 1; |
7ab12479 | 4559 | } |
413430c5 | 4560 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 4561 | center_p = 1; |
7ab12479 JB |
4562 | else |
4563 | { | |
413430c5 EN |
4564 | arg = Fprefix_numeric_value (arg); |
4565 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
4566 | } |
4567 | ||
478292ed | 4568 | set_buffer_internal (buf); |
7ab12479 | 4569 | |
521b203e | 4570 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
4571 | have variable-height lines and centering point on the basis of |
4572 | line counts would lead to strange effects. */ | |
521b203e | 4573 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 4574 | { |
6df47b59 GM |
4575 | if (center_p) |
4576 | { | |
521b203e GM |
4577 | struct it it; |
4578 | struct text_pos pt; | |
4579 | ||
4580 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4581 | start_display (&it, w, pt); | |
202379cf | 4582 | move_it_vertically (&it, - window_box_height (w) / 2); |
521b203e GM |
4583 | charpos = IT_CHARPOS (it); |
4584 | bytepos = IT_BYTEPOS (it); | |
6df47b59 GM |
4585 | } |
4586 | else if (XINT (arg) < 0) | |
4587 | { | |
521b203e GM |
4588 | struct it it; |
4589 | struct text_pos pt; | |
d466fa4d | 4590 | int y0, y1, h, nlines; |
521b203e GM |
4591 | |
4592 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4593 | start_display (&it, w, pt); | |
4594 | y0 = it.current_y; | |
4595 | ||
d466fa4d | 4596 | /* The amount of pixels we have to move back is the window |
521b203e GM |
4597 | height minus what's displayed in the line containing PT, |
4598 | and the lines below. */ | |
d466fa4d GM |
4599 | nlines = - XINT (arg) - 1; |
4600 | move_it_by_lines (&it, nlines, 1); | |
4601 | ||
521b203e GM |
4602 | y1 = it.current_y - y0; |
4603 | h = line_bottom_y (&it) - y1; | |
d466fa4d GM |
4604 | |
4605 | /* If we can't move down NLINES lines because we hit | |
4606 | the end of the buffer, count in some empty lines. */ | |
4607 | if (it.vpos < nlines) | |
4608 | y1 += (nlines - it.vpos) * CANON_Y_UNIT (it.f); | |
4609 | ||
521b203e GM |
4610 | y0 = it.last_visible_y - y1 - h; |
4611 | ||
4612 | start_display (&it, w, pt); | |
4613 | move_it_vertically (&it, - y0); | |
4614 | charpos = IT_CHARPOS (it); | |
4615 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 4616 | } |
521b203e GM |
4617 | else |
4618 | { | |
4619 | struct position pos; | |
4620 | pos = *vmotion (PT, - XINT (arg), w); | |
4621 | charpos = pos.bufpos; | |
4622 | bytepos = pos.bytepos; | |
4623 | } | |
4624 | } | |
4625 | else | |
4626 | { | |
4627 | struct position pos; | |
4628 | int ht = window_internal_height (w); | |
4629 | ||
4630 | if (center_p) | |
4631 | arg = make_number (ht / 2); | |
4632 | else if (XINT (arg) < 0) | |
4633 | arg = make_number (XINT (arg) + ht); | |
6df47b59 GM |
4634 | |
4635 | pos = *vmotion (PT, - XINT (arg), w); | |
4636 | charpos = pos.bufpos; | |
4637 | bytepos = pos.bytepos; | |
4638 | } | |
4639 | ||
4640 | /* Set the new window start. */ | |
4641 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 4642 | w->window_end_valid = Qnil; |
7ab12479 | 4643 | w->force_start = Qt; |
6df47b59 GM |
4644 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
4645 | w->start_at_line_beg = Qt; | |
4646 | else | |
4647 | w->start_at_line_beg = Qnil; | |
4648 | ||
478292ed | 4649 | set_buffer_internal (obuf); |
7ab12479 JB |
4650 | return Qnil; |
4651 | } | |
b7617575 GM |
4652 | |
4653 | ||
81fe0836 MB |
4654 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
4655 | 0, 1, 0, | |
4656 | "Return the height in lines of the text display area of WINDOW.\n\ | |
4657 | This doesn't include the mode-line (or header-line if any) or any\n\ | |
4658 | partial-height lines in the text display area.") | |
4659 | (window) | |
4660 | Lisp_Object window; | |
4661 | { | |
4662 | struct window *w = decode_window (window); | |
4663 | int pixel_height = window_box_height (w); | |
4664 | int line_height = pixel_height / CANON_Y_UNIT (XFRAME (w->frame)); | |
4665 | return make_number (line_height); | |
4666 | } | |
4667 | ||
4668 | ||
7ab12479 JB |
4669 | \f |
4670 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
4671 | 1, 1, "P", | |
4672 | "Position point relative to window.\n\ | |
19e3bf0a | 4673 | With no argument, position point at center of window.\n\ |
d81724c7 RS |
4674 | An argument specifies vertical position within the window;\n\ |
4675 | zero means top of window, negative means relative to bottom of window.") | |
7ab12479 | 4676 | (arg) |
b7617575 | 4677 | Lisp_Object arg; |
7ab12479 | 4678 | { |
b7617575 GM |
4679 | struct window *w = XWINDOW (selected_window); |
4680 | int lines, start; | |
540b6aa0 | 4681 | Lisp_Object window; |
7ab12479 | 4682 | |
b7617575 | 4683 | window = selected_window; |
7ab12479 JB |
4684 | start = marker_position (w->start); |
4685 | if (start < BEGV || start > ZV) | |
4686 | { | |
b7617575 | 4687 | int height = window_internal_height (w); |
cd2be1dd | 4688 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4689 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4690 | w->start_at_line_beg = Fbolp (); |
4691 | w->force_start = Qt; | |
4692 | } | |
4693 | else | |
b73ea88e | 4694 | Fgoto_char (w->start); |
7ab12479 | 4695 | |
b7617575 GM |
4696 | lines = displayed_window_lines (w); |
4697 | if (NILP (arg)) | |
4698 | XSETFASTINT (arg, lines / 2); | |
4699 | else | |
4700 | { | |
4701 | arg = Fprefix_numeric_value (arg); | |
4702 | if (XINT (arg) < 0) | |
4703 | XSETINT (arg, XINT (arg) + lines); | |
4704 | } | |
4705 | ||
c8bc6f65 | 4706 | /* Skip past a partially visible first line. */ |
163784df | 4707 | if (w->vscroll) |
163784df MB |
4708 | XSETINT (arg, XINT (arg) + 1); |
4709 | ||
540b6aa0 | 4710 | return Fvertical_motion (arg, window); |
7ab12479 | 4711 | } |
5500c422 GM |
4712 | |
4713 | ||
7ab12479 | 4714 | \f |
5500c422 GM |
4715 | /*********************************************************************** |
4716 | Window Configuration | |
4717 | ***********************************************************************/ | |
4718 | ||
7ab12479 JB |
4719 | struct save_window_data |
4720 | { | |
f5ccc0cc | 4721 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4722 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4723 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4724 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4725 | Lisp_Object selected_frame; |
7ab12479 JB |
4726 | Lisp_Object current_window; |
4727 | Lisp_Object current_buffer; | |
4728 | Lisp_Object minibuf_scroll_window; | |
4729 | Lisp_Object root_window; | |
bdc727bf | 4730 | Lisp_Object focus_frame; |
756b6edc RS |
4731 | /* Record the values of window-min-width and window-min-height |
4732 | so that window sizes remain consistent with them. */ | |
4733 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4734 | /* A vector, each of whose elements is a struct saved_window |
4735 | for one window. */ | |
7ab12479 JB |
4736 | Lisp_Object saved_windows; |
4737 | }; | |
ff06df24 | 4738 | |
cbff28e8 | 4739 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 4740 | struct saved_window |
ea68264b GM |
4741 | { |
4742 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
4743 | EMACS_INT size_from_Lisp_Vector_struct; | |
4744 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 4745 | |
ea68264b GM |
4746 | Lisp_Object window; |
4747 | Lisp_Object buffer, start, pointm, mark; | |
4748 | Lisp_Object left, top, width, height, hscroll, min_hscroll; | |
4749 | Lisp_Object parent, prev; | |
4750 | Lisp_Object start_at_line_beg; | |
4751 | Lisp_Object display_table; | |
4752 | Lisp_Object orig_top, orig_height; | |
4753 | }; | |
4754 | ||
4755 | #define SAVED_WINDOW_VECTOR_SIZE 17 /* Arg to Fmake_vector */ | |
7ab12479 JB |
4756 | |
4757 | #define SAVED_WINDOW_N(swv,n) \ | |
4758 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4759 | ||
4760 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
cbff28e8 | 4761 | "Return t if OBJECT is a window-configuration object.") |
413430c5 EN |
4762 | (object) |
4763 | Lisp_Object object; | |
7ab12479 | 4764 | { |
413430c5 | 4765 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4766 | return Qt; |
4767 | return Qnil; | |
4768 | } | |
4769 | ||
3f8ab7bd RS |
4770 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
4771 | "Return the frame that CONFIG, a window-configuration object, is about.") | |
4772 | (config) | |
4773 | Lisp_Object config; | |
4774 | { | |
4775 | register struct save_window_data *data; | |
4776 | struct Lisp_Vector *saved_windows; | |
4777 | ||
4778 | if (! WINDOW_CONFIGURATIONP (config)) | |
4779 | wrong_type_argument (Qwindow_configuration_p, config); | |
4780 | ||
4781 | data = (struct save_window_data *) XVECTOR (config); | |
4782 | saved_windows = XVECTOR (data->saved_windows); | |
4783 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4784 | } | |
4785 | ||
d5b2799e RS |
4786 | DEFUN ("set-window-configuration", Fset_window_configuration, |
4787 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
4788 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
4789 | CONFIGURATION must be a value previously returned\n\ | |
3f8ab7bd RS |
4790 | by `current-window-configuration' (which see).\n\ |
4791 | If CONFIGURATION was made from a frame that is now deleted,\n\ | |
4792 | only frame-independent values can be restored. In this case,\n\ | |
4793 | the return value is nil. Otherwise the value is t.") | |
4794 | (configuration) | |
2f83aebe | 4795 | Lisp_Object configuration; |
7ab12479 | 4796 | { |
7ab12479 JB |
4797 | register struct save_window_data *data; |
4798 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4799 | Lisp_Object new_current_buffer; |
fd482be5 | 4800 | Lisp_Object frame; |
44fa5b1e | 4801 | FRAME_PTR f; |
d2b35234 | 4802 | int old_point = -1; |
7ab12479 | 4803 | |
017b2bad | 4804 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4805 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4806 | |
2f83aebe | 4807 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4808 | saved_windows = XVECTOR (data->saved_windows); |
4809 | ||
7ab12479 | 4810 | new_current_buffer = data->current_buffer; |
265a9e55 | 4811 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4812 | new_current_buffer = Qnil; |
d2b35234 RS |
4813 | else |
4814 | { | |
4815 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4816 | old_point = PT; | |
4817 | } | |
7ab12479 | 4818 | |
fd482be5 JB |
4819 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4820 | f = XFRAME (frame); | |
aa35ba9e | 4821 | |
fd482be5 JB |
4822 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4823 | However, there is other stuff we should still try to do below. */ | |
4824 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4825 | { |
fd482be5 JB |
4826 | register struct window *w; |
4827 | register struct saved_window *p; | |
5500c422 GM |
4828 | struct window *root_window; |
4829 | struct window **leaf_windows; | |
4830 | int n_leaf_windows; | |
c4280705 | 4831 | int k, i, n; |
fd482be5 JB |
4832 | |
4833 | /* If the frame has been resized since this window configuration was | |
4834 | made, we change the frame to the size specified in the | |
4835 | configuration, restore the configuration, and then resize it | |
4836 | back. We keep track of the prevailing height in these variables. */ | |
4837 | int previous_frame_height = FRAME_HEIGHT (f); | |
4838 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4839 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4840 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4841 | |
d2b35234 RS |
4842 | /* The mouse highlighting code could get screwed up |
4843 | if it runs during this. */ | |
4844 | BLOCK_INPUT; | |
4845 | ||
fd482be5 JB |
4846 | if (XFASTINT (data->frame_height) != previous_frame_height |
4847 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4848 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4849 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4850 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4851 | if (XFASTINT (data->frame_menu_bar_lines) |
4852 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4853 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4854 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4855 | if (XFASTINT (data->frame_tool_bar_lines) |
4856 | != previous_frame_tool_bar_lines) | |
4857 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4858 | #endif |
217f2871 | 4859 | #endif |
fd482be5 | 4860 | |
719eaeb1 GM |
4861 | /* "Swap out" point from the selected window |
4862 | into its buffer. We do this now, before | |
4863 | restoring the window contents, and prevent it from | |
4864 | being done later on when we select a new window. */ | |
596ae0cf RS |
4865 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4866 | { | |
4867 | w = XWINDOW (selected_window); | |
4868 | set_marker_both (w->pointm, | |
4869 | w->buffer, | |
4870 | BUF_PT (XBUFFER (w->buffer)), | |
4871 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4872 | } | |
4873 | ||
fd482be5 | 4874 | windows_or_buffers_changed++; |
29aeee73 | 4875 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4876 | |
5500c422 GM |
4877 | /* Problem: Freeing all matrices and later allocating them again |
4878 | is a serious redisplay flickering problem. What we would | |
4879 | really like to do is to free only those matrices not reused | |
4880 | below. */ | |
4881 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4882 | leaf_windows | |
4883 | = (struct window **) alloca (count_windows (root_window) | |
4884 | * sizeof (struct window *)); | |
4885 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4886 | ||
756b6edc RS |
4887 | /* Temporarily avoid any problems with windows that are smaller |
4888 | than they are supposed to be. */ | |
4889 | window_min_height = 1; | |
4890 | window_min_width = 1; | |
4891 | ||
fd482be5 JB |
4892 | /* Kludge Alert! |
4893 | Mark all windows now on frame as "deleted". | |
4894 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4895 | |
fd482be5 JB |
4896 | Save their current buffers in their height fields, since we may |
4897 | need it later, if a buffer saved in the configuration is now | |
4898 | dead. */ | |
4899 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4900 | ||
4901 | for (k = 0; k < saved_windows->size; k++) | |
4902 | { | |
4903 | p = SAVED_WINDOW_N (saved_windows, k); | |
4904 | w = XWINDOW (p->window); | |
4905 | w->next = Qnil; | |
7ab12479 | 4906 | |
fd482be5 JB |
4907 | if (!NILP (p->parent)) |
4908 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4909 | XFASTINT (p->parent))->window; | |
4910 | else | |
4911 | w->parent = Qnil; | |
7ab12479 | 4912 | |
fd482be5 | 4913 | if (!NILP (p->prev)) |
7ab12479 | 4914 | { |
fd482be5 JB |
4915 | w->prev = SAVED_WINDOW_N (saved_windows, |
4916 | XFASTINT (p->prev))->window; | |
4917 | XWINDOW (w->prev)->next = p->window; | |
4918 | } | |
4919 | else | |
4920 | { | |
4921 | w->prev = Qnil; | |
4922 | if (!NILP (w->parent)) | |
4923 | { | |
4924 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4925 | { | |
4926 | XWINDOW (w->parent)->vchild = p->window; | |
4927 | XWINDOW (w->parent)->hchild = Qnil; | |
4928 | } | |
4929 | else | |
4930 | { | |
4931 | XWINDOW (w->parent)->hchild = p->window; | |
4932 | XWINDOW (w->parent)->vchild = Qnil; | |
4933 | } | |
4934 | } | |
4935 | } | |
4936 | ||
4937 | /* If we squirreled away the buffer in the window's height, | |
4938 | restore it now. */ | |
017b2bad | 4939 | if (BUFFERP (w->height)) |
fd482be5 JB |
4940 | w->buffer = w->height; |
4941 | w->left = p->left; | |
4942 | w->top = p->top; | |
4943 | w->width = p->width; | |
4944 | w->height = p->height; | |
4945 | w->hscroll = p->hscroll; | |
ea68264b | 4946 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 4947 | w->display_table = p->display_table; |
a1d58e5b GM |
4948 | w->orig_top = p->orig_top; |
4949 | w->orig_height = p->orig_height; | |
d834a2e9 | 4950 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4951 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4952 | |
4953 | /* Reinstall the saved buffer and pointers into it. */ | |
4954 | if (NILP (p->buffer)) | |
4955 | w->buffer = p->buffer; | |
4956 | else | |
4957 | { | |
4958 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4959 | /* If saved buffer is alive, install it. */ | |
4960 | { | |
4961 | w->buffer = p->buffer; | |
4962 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4963 | set_marker_restricted (w->start, p->start, w->buffer); |
4964 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4965 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4966 | p->mark, w->buffer); |
fd482be5 JB |
4967 | |
4968 | /* As documented in Fcurrent_window_configuration, don't | |
4969 | save the location of point in the buffer which was current | |
4970 | when the window configuration was recorded. */ | |
6b54027b RS |
4971 | if (!EQ (p->buffer, new_current_buffer) |
4972 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4973 | Fgoto_char (w->pointm); |
4974 | } | |
52a68e98 RS |
4975 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4976 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4977 | { |
fd482be5 JB |
4978 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4979 | /* This will set the markers to beginning of visible | |
4980 | range. */ | |
4981 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4982 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4983 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4984 | } |
4985 | else | |
fd482be5 | 4986 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4987 | are real. */ |
7ab12479 | 4988 | { |
fd482be5 JB |
4989 | /* Set window markers at start of visible range. */ |
4990 | if (XMARKER (w->start)->buffer == 0) | |
4991 | set_marker_restricted (w->start, make_number (0), | |
4992 | w->buffer); | |
4993 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4994 | set_marker_restricted_both (w->pointm, w->buffer, |
4995 | BUF_PT (XBUFFER (w->buffer)), | |
4996 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4997 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4998 | } |
4999 | } | |
5000 | } | |
9ace597f | 5001 | |
fd482be5 | 5002 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
5003 | /* Prevent "swapping out point" in the old selected window |
5004 | using the buffer that has been restored into it. | |
5005 | That swapping out has already been done, | |
5006 | near the beginning of this function. */ | |
5007 | selected_window = Qnil; | |
fd482be5 | 5008 | Fselect_window (data->current_window); |
396a830c RS |
5009 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
5010 | = selected_window; | |
7ab12479 | 5011 | |
db269683 | 5012 | if (NILP (data->focus_frame) |
017b2bad | 5013 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5014 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5015 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5016 | |
fd482be5 JB |
5017 | #if 0 /* I don't understand why this is needed, and it causes problems |
5018 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5019 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5020 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5021 | 0, 0); |
fd482be5 JB |
5022 | #endif |
5023 | ||
5024 | /* Set the screen height to the value it had before this function. */ | |
5025 | if (previous_frame_height != FRAME_HEIGHT (f) | |
5026 | || previous_frame_width != FRAME_WIDTH (f)) | |
5027 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 5028 | 0, 0, 0); |
e3678b64 | 5029 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5030 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5031 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5032 | make_number (0)); | |
4314246f | 5033 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5034 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5035 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5036 | make_number (0)); | |
4314246f | 5037 | #endif |
217f2871 | 5038 | #endif |
d2b35234 | 5039 | |
5500c422 | 5040 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5041 | for (i = n = 0; i < n_leaf_windows; ++i) |
5042 | { | |
5043 | if (NILP (leaf_windows[i]->buffer)) | |
5044 | { | |
5045 | /* Assert it's not reused as a combination. */ | |
5046 | xassert (NILP (leaf_windows[i]->hchild) | |
5047 | && NILP (leaf_windows[i]->vchild)); | |
5048 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5049 | } |
5050 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5051 | ++n; | |
5052 | } | |
5053 | ||
5054 | /* If more than one window shows the new and old current buffer, | |
5055 | don't try to preserve point in that buffer. */ | |
5056 | if (old_point > 0 && n > 1) | |
5057 | old_point = -1; | |
5500c422 GM |
5058 | |
5059 | adjust_glyphs (f); | |
5060 | ||
d2b35234 | 5061 | UNBLOCK_INPUT; |
756b6edc | 5062 | |
478292ed RS |
5063 | /* Fselect_window will have made f the selected frame, so we |
5064 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5065 | selected window too, but that doesn't make the call to | |
5066 | Fselect_window above totally superfluous; it still sets f's | |
5067 | selected window. */ | |
5068 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5069 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5070 | |
5071 | if (! NILP (Vwindow_configuration_change_hook) | |
5072 | && ! NILP (Vrun_hooks)) | |
5073 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5074 | } | |
bdc727bf JB |
5075 | |
5076 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
5077 | { |
5078 | Fset_buffer (new_current_buffer); | |
5079 | ||
5080 | /* If the buffer that is current now is the same | |
5081 | that was current before setting the window configuration, | |
5082 | don't alter its PT. */ | |
5083 | if (old_point >= 0) | |
5084 | SET_PT (old_point); | |
5085 | } | |
bdc727bf | 5086 | |
478292ed RS |
5087 | /* Restore the minimum heights recorded in the configuration. */ |
5088 | window_min_height = XINT (data->min_height); | |
5089 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5090 | |
478292ed | 5091 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 5092 | |
3f8ab7bd | 5093 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5094 | } |
5095 | ||
44fa5b1e | 5096 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5097 | by setting their buffers to nil. */ |
5098 | ||
fd482be5 | 5099 | void |
7ab12479 JB |
5100 | delete_all_subwindows (w) |
5101 | register struct window *w; | |
5102 | { | |
265a9e55 | 5103 | if (!NILP (w->next)) |
7ab12479 | 5104 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5105 | if (!NILP (w->vchild)) |
7ab12479 | 5106 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5107 | if (!NILP (w->hchild)) |
7ab12479 | 5108 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
5109 | |
5110 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
5111 | ||
86e48436 RS |
5112 | if (!NILP (w->buffer)) |
5113 | unshow_buffer (w); | |
5114 | ||
605be8af JB |
5115 | /* We set all three of these fields to nil, to make sure that we can |
5116 | distinguish this dead window from any live window. Live leaf | |
5117 | windows will have buffer set, and combination windows will have | |
5118 | vchild or hchild set. */ | |
5119 | w->buffer = Qnil; | |
5120 | w->vchild = Qnil; | |
5121 | w->hchild = Qnil; | |
acf70840 GM |
5122 | |
5123 | Vwindow_list = Qnil; | |
7ab12479 JB |
5124 | } |
5125 | \f | |
5126 | static int | |
5127 | count_windows (window) | |
5128 | register struct window *window; | |
5129 | { | |
5130 | register int count = 1; | |
265a9e55 | 5131 | if (!NILP (window->next)) |
7ab12479 | 5132 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5133 | if (!NILP (window->vchild)) |
7ab12479 | 5134 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5135 | if (!NILP (window->hchild)) |
7ab12479 JB |
5136 | count += count_windows (XWINDOW (window->hchild)); |
5137 | return count; | |
5138 | } | |
5139 | ||
5500c422 GM |
5140 | |
5141 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
5142 | Value is last index + 1. */ | |
5143 | ||
5144 | static int | |
5145 | get_leaf_windows (w, flat, i) | |
5146 | struct window *w; | |
5147 | struct window **flat; | |
5148 | int i; | |
5149 | { | |
5150 | while (w) | |
5151 | { | |
5152 | if (!NILP (w->hchild)) | |
5153 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5154 | else if (!NILP (w->vchild)) | |
5155 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
5156 | else | |
5157 | flat[i++] = w; | |
5158 | ||
5159 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5160 | } | |
5161 | ||
5162 | return i; | |
5163 | } | |
5164 | ||
5165 | ||
5166 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5167 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5168 | can be returned. */ | |
5169 | ||
5170 | struct glyph * | |
5171 | get_phys_cursor_glyph (w) | |
5172 | struct window *w; | |
5173 | { | |
5174 | struct glyph_row *row; | |
5175 | struct glyph *glyph; | |
5176 | ||
5177 | if (w->phys_cursor.vpos >= 0 | |
5178 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5179 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5180 | row->enabled_p) | |
5181 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5182 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5183 | else | |
5184 | glyph = NULL; | |
5185 | ||
5186 | return glyph; | |
5187 | } | |
5188 | ||
5189 | ||
7ab12479 JB |
5190 | static int |
5191 | save_window_save (window, vector, i) | |
5192 | Lisp_Object window; | |
5193 | struct Lisp_Vector *vector; | |
5194 | int i; | |
5195 | { | |
5196 | register struct saved_window *p; | |
5197 | register struct window *w; | |
5198 | register Lisp_Object tem; | |
5199 | ||
265a9e55 | 5200 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5201 | { |
5202 | p = SAVED_WINDOW_N (vector, i); | |
5203 | w = XWINDOW (window); | |
5204 | ||
d834a2e9 | 5205 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
5206 | p->window = window; |
5207 | p->buffer = w->buffer; | |
5208 | p->left = w->left; | |
5209 | p->top = w->top; | |
5210 | p->width = w->width; | |
5211 | p->height = w->height; | |
5212 | p->hscroll = w->hscroll; | |
ea68264b | 5213 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5214 | p->display_table = w->display_table; |
a1d58e5b GM |
5215 | p->orig_top = w->orig_top; |
5216 | p->orig_height = w->orig_height; | |
265a9e55 | 5217 | if (!NILP (w->buffer)) |
7ab12479 JB |
5218 | { |
5219 | /* Save w's value of point in the window configuration. | |
5220 | If w is the selected window, then get the value of point | |
5221 | from the buffer; pointm is garbage in the selected window. */ | |
5222 | if (EQ (window, selected_window)) | |
5223 | { | |
5224 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5225 | set_marker_both (p->pointm, w->buffer, |
5226 | BUF_PT (XBUFFER (w->buffer)), | |
5227 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5228 | } |
5229 | else | |
eeb82665 | 5230 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5231 | |
eeb82665 | 5232 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5233 | p->start_at_line_beg = w->start_at_line_beg; |
5234 | ||
5235 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 5236 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5237 | } |
5238 | else | |
5239 | { | |
5240 | p->pointm = Qnil; | |
5241 | p->start = Qnil; | |
5242 | p->mark = Qnil; | |
5243 | p->start_at_line_beg = Qnil; | |
5244 | } | |
5245 | ||
265a9e55 | 5246 | if (NILP (w->parent)) |
7ab12479 JB |
5247 | p->parent = Qnil; |
5248 | else | |
5249 | p->parent = XWINDOW (w->parent)->temslot; | |
5250 | ||
265a9e55 | 5251 | if (NILP (w->prev)) |
7ab12479 JB |
5252 | p->prev = Qnil; |
5253 | else | |
5254 | p->prev = XWINDOW (w->prev)->temslot; | |
5255 | ||
265a9e55 | 5256 | if (!NILP (w->vchild)) |
7ab12479 | 5257 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5258 | if (!NILP (w->hchild)) |
7ab12479 JB |
5259 | i = save_window_save (w->hchild, vector, i); |
5260 | } | |
5261 | ||
5262 | return i; | |
5263 | } | |
5264 | ||
a0d76c27 EN |
5265 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
5266 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
5267 | "Return an object representing the current window configuration of FRAME.\n\ |
5268 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
5269 | This describes the number of windows, their sizes and current buffers,\n\ |
5270 | and for each displayed buffer, where display starts, and the positions of\n\ | |
5271 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
5272 | its value is -not- saved.\n\ |
5273 | This also records the currently selected frame, and FRAME's focus\n\ | |
5274 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
5275 | (frame) |
5276 | Lisp_Object frame; | |
7ab12479 JB |
5277 | { |
5278 | register Lisp_Object tem; | |
5279 | register int n_windows; | |
5280 | register struct save_window_data *data; | |
da2792e0 | 5281 | register struct Lisp_Vector *vec; |
7ab12479 | 5282 | register int i; |
44fa5b1e | 5283 | FRAME_PTR f; |
43bad991 | 5284 | |
44fa5b1e | 5285 | if (NILP (frame)) |
1ae1a37d GM |
5286 | frame = selected_frame; |
5287 | CHECK_LIVE_FRAME (frame, 0); | |
5288 | f = XFRAME (frame); | |
7ab12479 | 5289 | |
44fa5b1e | 5290 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 5291 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
5292 | data = (struct save_window_data *)vec; |
5293 | ||
d834a2e9 KH |
5294 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
5295 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
5296 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 5297 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 5298 | data->selected_frame = selected_frame; |
44fa5b1e | 5299 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5300 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 5301 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 5302 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5303 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
5304 | XSETINT (data->min_height, window_min_height); |
5305 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5306 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5307 | data->saved_windows = tem; | |
5308 | for (i = 0; i < n_windows; i++) | |
5309 | XVECTOR (tem)->contents[i] | |
5310 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 5311 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5312 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5313 | return (tem); |
5314 | } | |
5315 | ||
5316 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
5317 | 0, UNEVALLED, 0, | |
5318 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
5319 | Restore which buffer appears in which window, where display starts,\n\ |
5320 | and the value of point and mark for each window.\n\ | |
8ed92cf0 | 5321 | Also restore the choice of selected window.\n\ |
eb16ec06 | 5322 | Also restore which buffer is current.\n\ |
7ab12479 JB |
5323 | Does not restore the value of point in current buffer.") |
5324 | (args) | |
5325 | Lisp_Object args; | |
5326 | { | |
5327 | register Lisp_Object val; | |
5328 | register int count = specpdl_ptr - specpdl; | |
5329 | ||
5330 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5331 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5332 | val = Fprogn (args); |
5333 | return unbind_to (count, val); | |
5334 | } | |
5500c422 GM |
5335 | |
5336 | \f | |
5337 | /*********************************************************************** | |
5338 | Marginal Areas | |
5339 | ***********************************************************************/ | |
5340 | ||
5341 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5342 | 2, 3, 0, |
5500c422 | 5343 | "Set width of marginal areas of window WINDOW.\n\ |
a7bdfc08 | 5344 | If window is nil, set margins of the currently selected window.\n\ |
5500c422 GM |
5345 | First parameter LEFT-WIDTH specifies the number of character\n\ |
5346 | cells to reserve for the left marginal area. Second parameter\n\ | |
5347 | RIGHT-WIDTH does the same for the right marginal area.\n\ | |
5348 | A nil width parameter means no margin.") | |
cfa22082 | 5349 | (window, left, right) |
5500c422 GM |
5350 | Lisp_Object window, left, right; |
5351 | { | |
5352 | struct window *w = decode_window (window); | |
5500c422 GM |
5353 | |
5354 | if (!NILP (left)) | |
cfa22082 | 5355 | CHECK_NUMBER_OR_FLOAT (left, 1); |
5500c422 | 5356 | if (!NILP (right)) |
cfa22082 | 5357 | CHECK_NUMBER_OR_FLOAT (right, 2); |
5500c422 GM |
5358 | |
5359 | /* Check widths < 0 and translate a zero width to nil. | |
5360 | Margins that are too wide have to be checked elsewhere. */ | |
5361 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5362 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5363 | XSETFASTINT (left, 0); |
5364 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5365 | left = Qnil; | |
5366 | ||
5367 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 5368 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5369 | XSETFASTINT (right, 0); |
5370 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5371 | right = Qnil; | |
5372 | ||
5373 | w->left_margin_width = left; | |
5374 | w->right_margin_width = right; | |
5375 | ||
5376 | ++windows_or_buffers_changed; | |
5377 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5378 | return Qnil; | |
5379 | } | |
5380 | ||
5381 | ||
5382 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5383 | 0, 1, 0, | |
5384 | "Get width of marginal areas of window WINDOW.\n\ | |
5385 | If WINDOW is omitted or nil, use the currently selected window.\n\ | |
5386 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).\n\ | |
5387 | If a marginal area does not exist, its width will be returned\n\ | |
5388 | as nil.") | |
5389 | (window) | |
5390 | Lisp_Object window; | |
5391 | { | |
5392 | struct window *w = decode_window (window); | |
5393 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5394 | } | |
5395 | ||
5396 | ||
7ab12479 | 5397 | \f |
5500c422 GM |
5398 | /*********************************************************************** |
5399 | Smooth scrolling | |
5400 | ***********************************************************************/ | |
5401 | ||
5402 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
5403 | "Return the amount by which WINDOW is scrolled vertically.\n\ | |
5404 | Use the selected window if WINDOW is nil or omitted.\n\ | |
5405 | Value is a multiple of the canonical character height of WINDOW.") | |
5406 | (window) | |
5407 | Lisp_Object window; | |
5408 | { | |
47004952 | 5409 | Lisp_Object result; |
5500c422 GM |
5410 | struct frame *f; |
5411 | struct window *w; | |
5412 | ||
5413 | if (NILP (window)) | |
5414 | window = selected_window; | |
47004952 GM |
5415 | else |
5416 | CHECK_WINDOW (window, 0); | |
5500c422 GM |
5417 | w = XWINDOW (window); |
5418 | f = XFRAME (w->frame); | |
5419 | ||
5420 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5421 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5422 | else |
47004952 GM |
5423 | result = make_number (0); |
5424 | return result; | |
5500c422 GM |
5425 | } |
5426 | ||
5427 | ||
5428 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 GM |
5429 | 2, 2, 0, |
5430 | "Set amount by which WINDOW should be scrolled vertically to VSCROLL.\n\ | |
5500c422 | 5431 | WINDOW nil or omitted means use the selected window. VSCROLL is a\n\ |
47004952 GM |
5432 | non-negative multiple of the canonical character height of WINDOW.") |
5433 | (window, vscroll) | |
5434 | Lisp_Object window, vscroll; | |
5500c422 GM |
5435 | { |
5436 | struct window *w; | |
5437 | struct frame *f; | |
5438 | ||
5500c422 GM |
5439 | if (NILP (window)) |
5440 | window = selected_window; | |
47004952 GM |
5441 | else |
5442 | CHECK_WINDOW (window, 0); | |
5443 | CHECK_NUMBER_OR_FLOAT (vscroll, 1); | |
5444 | ||
5500c422 GM |
5445 | w = XWINDOW (window); |
5446 | f = XFRAME (w->frame); | |
5447 | ||
5448 | if (FRAME_WINDOW_P (f)) | |
5449 | { | |
5450 | int old_dy = w->vscroll; | |
47004952 GM |
5451 | |
5452 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5453 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5454 | |
5455 | /* Adjust glyph matrix of the frame if the virtual display | |
5456 | area becomes larger than before. */ | |
5457 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5458 | adjust_glyphs (f); | |
5459 | ||
5460 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5461 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5462 | } |
5463 | ||
47004952 | 5464 | return Fwindow_vscroll (window); |
5500c422 GM |
5465 | } |
5466 | ||
7bbb5782 GM |
5467 | \f |
5468 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5469 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5470 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5471 | |
5472 | void | |
f95464e4 | 5473 | foreach_window (f, fn, user_data) |
7bbb5782 | 5474 | struct frame *f; |
f95464e4 GM |
5475 | int (* fn) P_ ((struct window *, void *)); |
5476 | void *user_data; | |
7bbb5782 | 5477 | { |
f95464e4 | 5478 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5479 | } |
5480 | ||
5481 | ||
5482 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5483 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5484 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5485 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5486 | |
67492200 | 5487 | static int |
f95464e4 | 5488 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5489 | struct window *w; |
f95464e4 GM |
5490 | int (* fn) P_ ((struct window *, void *)); |
5491 | void *user_data; | |
7bbb5782 | 5492 | { |
67492200 GM |
5493 | int cont; |
5494 | ||
5495 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5496 | { |
5497 | if (!NILP (w->hchild)) | |
f95464e4 | 5498 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5499 | else if (!NILP (w->vchild)) |
f95464e4 | 5500 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
0f532a9a GM |
5501 | else |
5502 | cont = fn (w, user_data); | |
7bbb5782 GM |
5503 | |
5504 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5505 | } | |
67492200 GM |
5506 | |
5507 | return cont; | |
7bbb5782 GM |
5508 | } |
5509 | ||
5510 | ||
5511 | /* Freeze or unfreeze the window start of W if unless it is a | |
f95464e4 | 5512 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5513 | the window start. */ |
5514 | ||
67492200 | 5515 | static int |
7bbb5782 GM |
5516 | freeze_window_start (w, freeze_p) |
5517 | struct window *w; | |
f95464e4 | 5518 | void *freeze_p; |
7bbb5782 GM |
5519 | { |
5520 | if (w == XWINDOW (selected_window) | |
5521 | || MINI_WINDOW_P (w) | |
5522 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5523 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5524 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5525 | freeze_p = NULL; |
7bbb5782 | 5526 | |
f95464e4 | 5527 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5528 | return 1; |
7bbb5782 GM |
5529 | } |
5530 | ||
5531 | ||
5532 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5533 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5534 | means freeze the window start. */ | |
5535 | ||
5536 | void | |
5537 | freeze_window_starts (f, freeze_p) | |
5538 | struct frame *f; | |
5539 | int freeze_p; | |
5540 | { | |
cbccabec | 5541 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5542 | } |
5500c422 GM |
5543 | |
5544 | \f | |
5545 | /*********************************************************************** | |
5546 | Initialization | |
5547 | ***********************************************************************/ | |
5548 | ||
cbff28e8 RS |
5549 | /* Return 1 if window configurations C1 and C2 |
5550 | describe the same state of affairs. This is used by Fequal. */ | |
5551 | ||
5552 | int | |
2f8274be | 5553 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5554 | Lisp_Object c1, c2; |
2f8274be | 5555 | int ignore_positions; |
cbff28e8 RS |
5556 | { |
5557 | register struct save_window_data *d1, *d2; | |
5558 | struct Lisp_Vector *sw1, *sw2; | |
5559 | int i; | |
5560 | ||
4d3edcb4 GM |
5561 | if (!WINDOW_CONFIGURATIONP (c1)) |
5562 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5563 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5564 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5565 | ||
cbff28e8 RS |
5566 | d1 = (struct save_window_data *) XVECTOR (c1); |
5567 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5568 | sw1 = XVECTOR (d1->saved_windows); | |
5569 | sw2 = XVECTOR (d2->saved_windows); | |
5570 | ||
5571 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5572 | return 0; | |
5573 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5574 | return 0; | |
5575 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5576 | return 0; | |
5577 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5578 | return 0; | |
5579 | /* Don't compare the current_window field directly. | |
5580 | Instead see w1_is_current and w2_is_current, below. */ | |
5581 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5582 | return 0; | |
2f8274be RS |
5583 | if (! ignore_positions) |
5584 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5585 | return 0; | |
cbff28e8 RS |
5586 | /* Don't compare the root_window field. |
5587 | We don't require the two configurations | |
5588 | to use the same window object, | |
5589 | and the two root windows must be equivalent | |
5590 | if everything else compares equal. */ | |
5591 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5592 | return 0; | |
5593 | if (! EQ (d1->min_width, d2->min_width)) | |
5594 | return 0; | |
5595 | if (! EQ (d1->min_height, d2->min_height)) | |
5596 | return 0; | |
5597 | ||
5598 | /* Verify that the two confis have the same number of windows. */ | |
5599 | if (sw1->size != sw2->size) | |
5600 | return 0; | |
5601 | ||
5602 | for (i = 0; i < sw1->size; i++) | |
5603 | { | |
5604 | struct saved_window *p1, *p2; | |
5605 | int w1_is_current, w2_is_current; | |
5606 | ||
5607 | p1 = SAVED_WINDOW_N (sw1, i); | |
5608 | p2 = SAVED_WINDOW_N (sw2, i); | |
5609 | ||
5610 | /* Verify that the current windows in the two | |
5611 | configurations correspond to each other. */ | |
5612 | w1_is_current = EQ (d1->current_window, p1->window); | |
5613 | w2_is_current = EQ (d2->current_window, p2->window); | |
5614 | ||
5615 | if (w1_is_current != w2_is_current) | |
5616 | return 0; | |
5617 | ||
5618 | /* Verify that the corresponding windows do match. */ | |
5619 | if (! EQ (p1->buffer, p2->buffer)) | |
5620 | return 0; | |
5621 | if (! EQ (p1->left, p2->left)) | |
5622 | return 0; | |
5623 | if (! EQ (p1->top, p2->top)) | |
5624 | return 0; | |
5625 | if (! EQ (p1->width, p2->width)) | |
5626 | return 0; | |
5627 | if (! EQ (p1->height, p2->height)) | |
5628 | return 0; | |
cbff28e8 RS |
5629 | if (! EQ (p1->display_table, p2->display_table)) |
5630 | return 0; | |
5631 | if (! EQ (p1->parent, p2->parent)) | |
5632 | return 0; | |
5633 | if (! EQ (p1->prev, p2->prev)) | |
5634 | return 0; | |
2f8274be RS |
5635 | if (! ignore_positions) |
5636 | { | |
5637 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5638 | return 0; | |
ea68264b GM |
5639 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
5640 | return 0; | |
2f8274be RS |
5641 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
5642 | return 0; | |
5643 | if (NILP (Fequal (p1->start, p2->start))) | |
5644 | return 0; | |
5645 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5646 | return 0; | |
5647 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5648 | return 0; | |
5649 | } | |
cbff28e8 RS |
5650 | } |
5651 | ||
5652 | return 1; | |
5653 | } | |
2f8274be RS |
5654 | |
5655 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5656 | Scompare_window_configurations, 2, 2, 0, | |
5657 | "Compare two window configurations as regards the structure of windows.\n\ | |
5658 | This function ignores details such as the values of point and mark\n\ | |
5659 | and scrolling positions.") | |
5660 | (x, y) | |
5661 | Lisp_Object x, y; | |
5662 | { | |
5663 | if (compare_window_configurations (x, y, 1)) | |
5664 | return Qt; | |
5665 | return Qnil; | |
5666 | } | |
cbff28e8 | 5667 | \f |
dfcf069d | 5668 | void |
7ab12479 JB |
5669 | init_window_once () |
5670 | { | |
1ae1a37d GM |
5671 | struct frame *f = make_terminal_frame (); |
5672 | XSETFRAME (selected_frame, f); | |
5673 | Vterminal_frame = selected_frame; | |
5674 | minibuf_window = f->minibuffer_window; | |
5675 | selected_window = f->selected_window; | |
5676 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5677 | |
5678 | window_initialized = 1; | |
7ab12479 JB |
5679 | } |
5680 | ||
67492200 GM |
5681 | void |
5682 | init_window () | |
5683 | { | |
5684 | Vwindow_list = Qnil; | |
5685 | } | |
5686 | ||
dfcf069d | 5687 | void |
7ab12479 JB |
5688 | syms_of_window () |
5689 | { | |
7442878f GM |
5690 | Qleft_fringe = intern ("left-fringe"); |
5691 | staticpro (&Qleft_fringe); | |
5692 | Qright_fringe = intern ("right-fringe"); | |
5693 | staticpro (&Qright_fringe); | |
fbad6f9a | 5694 | |
8a37516b GM |
5695 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5696 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5697 | |
543f5fb1 RS |
5698 | staticpro (&Qwindow_configuration_change_hook); |
5699 | Qwindow_configuration_change_hook | |
5700 | = intern ("window-configuration-change-hook"); | |
5701 | ||
7ab12479 JB |
5702 | Qwindowp = intern ("windowp"); |
5703 | staticpro (&Qwindowp); | |
5704 | ||
3f8ab7bd RS |
5705 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5706 | staticpro (&Qwindow_configuration_p); | |
5707 | ||
806b4d9b JB |
5708 | Qwindow_live_p = intern ("window-live-p"); |
5709 | staticpro (&Qwindow_live_p); | |
605be8af | 5710 | |
2cccc823 | 5711 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5712 | staticpro (&Qtemp_buffer_show_hook); |
5713 | ||
67492200 GM |
5714 | staticpro (&Vwindow_list); |
5715 | ||
7ab12479 JB |
5716 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
5717 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 5718 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
5719 | Used by `with-output-to-temp-buffer'.\n\ |
5720 | If this function is used, then it must do the entire job of showing\n\ | |
5721 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
5722 | Vtemp_buffer_show_function = Qnil; |
5723 | ||
5724 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
5725 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
5726 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
5727 | that the currently selected window is not acceptable.\n\ | |
5728 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
5729 | work using this function."); | |
5730 | Vdisplay_buffer_function = Qnil; | |
5731 | ||
6529ed87 GM |
5732 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
5733 | "*If non-nil, `display-buffer' should even the window heights.\n\ | |
85d19b32 | 5734 | If nil, `display-buffer' will leave the window configuration alone."); |
6529ed87 GM |
5735 | Veven_window_heights = Qt; |
5736 | ||
7ab12479 JB |
5737 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
5738 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
5739 | Vminibuf_scroll_window = Qnil; | |
5740 | ||
5741 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
5742 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
5743 | Vother_window_scroll_buffer = Qnil; | |
5744 | ||
44fa5b1e | 5745 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 5746 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 5747 | pop_up_frames = 0; |
7ab12479 | 5748 | |
9c3da604 | 5749 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
5372262f | 5750 | "*Non-nil means `display-buffer' should reuse frames.\n\ |
9c3da604 GM |
5751 | If the buffer in question is already displayed in a frame, raise that frame."); |
5752 | display_buffer_reuse_frames = 0; | |
5753 | ||
44fa5b1e | 5754 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 5755 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 5756 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 5757 | \n\ |
44fa5b1e JB |
5758 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
5759 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
5760 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 5761 | |
a90712c2 RS |
5762 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
5763 | "*List of buffer names that should have their own special frames.\n\ | |
5764 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 5765 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 5766 | \n\ |
524580a4 RS |
5767 | An element of the list can be a list instead of just a string.\n\ |
5768 | There are two ways to use a list as an element:\n\ | |
5769 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
5770 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5771 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
5772 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
4caa7448 RS |
5773 | All this is done by the function found in `special-display-function'.\n\ |
5774 | \n\ | |
5775 | If this variable appears \"not to work\", because you add a name to it\n\ | |
5776 | but that buffer still appears in the selected window, look at the\n\ | |
5777 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5778 | Those variables take precedence over this one."); | |
a90712c2 RS |
5779 | Vspecial_display_buffer_names = Qnil; |
5780 | ||
5781 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
5782 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
5783 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
5784 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 5785 | using `special-display-function'.\n\ |
3548e138 | 5786 | \n\ |
524580a4 RS |
5787 | An element of the list can be a list instead of just a string.\n\ |
5788 | There are two ways to use a list as an element:\n\ | |
5789 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
5790 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5791 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
5792 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
4caa7448 RS |
5793 | All this is done by the function found in `special-display-function'.\n\ |
5794 | \n\ | |
5795 | If this variable appears \"not to work\", because you add a regexp to it\n\ | |
5796 | but the matching buffers still appear in the selected window, look at the\n\ | |
5797 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5798 | Those variables take precedence over this one."); | |
a90712c2 RS |
5799 | Vspecial_display_regexps = Qnil; |
5800 | ||
5801 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
5802 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
5803 | It is called with two arguments, the buffer and optional buffer specific\n\ |
5804 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 5805 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 5806 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
5807 | \n\ |
5808 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
5809 | or matches a regexp in `special-display-regexps'."); | |
5810 | Vspecial_display_function = Qnil; | |
5811 | ||
855d8627 RS |
5812 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
5813 | "*List of buffer names that should appear in the selected window.\n\ | |
5814 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
5815 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 5816 | in some other window.\n\ |
855d8627 RS |
5817 | \n\ |
5818 | An element of the list can be a cons cell instead of just a string.\n\ | |
5819 | Then the car must be a string, which specifies the buffer name.\n\ | |
5820 | This is for compatibility with `special-display-buffer-names';\n\ | |
5821 | the cdr of the cons cell is ignored.\n\ | |
5822 | \n\ | |
5823 | See also `same-window-regexps'."); | |
5824 | Vsame_window_buffer_names = Qnil; | |
5825 | ||
5826 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
5827 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
5828 | If a buffer name matches one of these regexps, then displaying it\n\ | |
5829 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
5830 | in the selected window, rather than making it appear in some other window.\n\ | |
5831 | \n\ | |
5832 | An element of the list can be a cons cell instead of just a string.\n\ | |
5833 | Then the car must be a string, which specifies the buffer name.\n\ | |
5834 | This is for compatibility with `special-display-buffer-names';\n\ | |
5835 | the cdr of the cons cell is ignored.\n\ | |
5836 | \n\ | |
5837 | See also `same-window-buffer-names'."); | |
5838 | Vsame_window_regexps = Qnil; | |
5839 | ||
7ab12479 JB |
5840 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
5841 | "*Non-nil means display-buffer should make new windows."); | |
5842 | pop_up_windows = 1; | |
5843 | ||
5844 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
5845 | "*Number of lines of continuity when scrolling by screenfuls."); | |
5846 | next_screen_context_lines = 2; | |
5847 | ||
5848 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
5849 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
5850 | If there is only one window, it is split regardless of this value."); | |
5851 | split_height_threshold = 500; | |
5852 | ||
5853 | DEFVAR_INT ("window-min-height", &window_min_height, | |
5854 | "*Delete any window less than this tall (including its mode line)."); | |
5855 | window_min_height = 4; | |
5856 | ||
5857 | DEFVAR_INT ("window-min-width", &window_min_width, | |
5858 | "*Delete any window less than this wide."); | |
5859 | window_min_width = 10; | |
5860 | ||
5500c422 GM |
5861 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5862 | &Vscroll_preserve_screen_position, | |
2afb2f41 | 5863 | "*Non-nil means scroll commands move point to keep its screen line unchanged."); |
5500c422 | 5864 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5865 | |
543f5fb1 RS |
5866 | DEFVAR_LISP ("window-configuration-change-hook", |
5867 | &Vwindow_configuration_change_hook, | |
5868 | "Functions to call when window configuration changes.\n\ | |
e3e041eb | 5869 | The selected frame is the one whose configuration has changed."); |
543f5fb1 RS |
5870 | Vwindow_configuration_change_hook = Qnil; |
5871 | ||
b0b7ed0e GM |
5872 | DEFVAR_BOOL ("window-size-fixed", &window_size_fixed, |
5873 | "Non-nil in a buffer means windows displaying the buffer are fixed-size.\n\ | |
5874 | Emacs won't change the size of any window displaying that buffer,\n\ | |
5875 | unless you explicitly change the size, or Emacs has no other choice.\n\ | |
5876 | This variable automatically becomes buffer-local when set."); | |
5877 | Fmake_variable_buffer_local (Qwindow_size_fixed); | |
5878 | window_size_fixed = 0; | |
5879 | ||
7ab12479 JB |
5880 | defsubr (&Sselected_window); |
5881 | defsubr (&Sminibuffer_window); | |
5882 | defsubr (&Swindow_minibuffer_p); | |
5883 | defsubr (&Swindowp); | |
806b4d9b | 5884 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5885 | defsubr (&Spos_visible_in_window_p); |
5886 | defsubr (&Swindow_buffer); | |
5887 | defsubr (&Swindow_height); | |
5888 | defsubr (&Swindow_width); | |
5889 | defsubr (&Swindow_hscroll); | |
5890 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5891 | defsubr (&Swindow_redisplay_end_trigger); |
5892 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5893 | defsubr (&Swindow_edges); |
d5783c40 JB |
5894 | defsubr (&Scoordinates_in_window_p); |
5895 | defsubr (&Swindow_at); | |
7ab12479 JB |
5896 | defsubr (&Swindow_point); |
5897 | defsubr (&Swindow_start); | |
5898 | defsubr (&Swindow_end); | |
5899 | defsubr (&Sset_window_point); | |
5900 | defsubr (&Sset_window_start); | |
5901 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5902 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5903 | defsubr (&Swindow_display_table); |
5904 | defsubr (&Sset_window_display_table); | |
5905 | defsubr (&Snext_window); | |
5906 | defsubr (&Sprevious_window); | |
5907 | defsubr (&Sother_window); | |
5908 | defsubr (&Sget_lru_window); | |
5909 | defsubr (&Sget_largest_window); | |
5910 | defsubr (&Sget_buffer_window); | |
5911 | defsubr (&Sdelete_other_windows); | |
5912 | defsubr (&Sdelete_windows_on); | |
5913 | defsubr (&Sreplace_buffer_in_windows); | |
5914 | defsubr (&Sdelete_window); | |
5915 | defsubr (&Sset_window_buffer); | |
5916 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5917 | defsubr (&Sspecial_display_p); |
5918 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5919 | defsubr (&Sdisplay_buffer); |
5920 | defsubr (&Ssplit_window); | |
5921 | defsubr (&Senlarge_window); | |
5922 | defsubr (&Sshrink_window); | |
5923 | defsubr (&Sscroll_up); | |
5924 | defsubr (&Sscroll_down); | |
5925 | defsubr (&Sscroll_left); | |
5926 | defsubr (&Sscroll_right); | |
ccd0664b | 5927 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5928 | defsubr (&Sscroll_other_window); |
5929 | defsubr (&Srecenter); | |
81fe0836 | 5930 | defsubr (&Swindow_text_height); |
7ab12479 JB |
5931 | defsubr (&Smove_to_window_line); |
5932 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5933 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5934 | defsubr (&Sset_window_configuration); |
5935 | defsubr (&Scurrent_window_configuration); | |
5936 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5937 | defsubr (&Sset_window_margins); |
5938 | defsubr (&Swindow_margins); | |
5939 | defsubr (&Swindow_vscroll); | |
5940 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5941 | defsubr (&Scompare_window_configurations); |
67492200 | 5942 | defsubr (&Swindow_list); |
7ab12479 JB |
5943 | } |
5944 | ||
dfcf069d | 5945 | void |
7ab12479 JB |
5946 | keys_of_window () |
5947 | { | |
5948 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5949 | initial_define_key (control_x_map, '2', "split-window"); | |
5950 | initial_define_key (control_x_map, '0', "delete-window"); | |
5951 | initial_define_key (control_x_map, 'o', "other-window"); | |
5952 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5953 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5954 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5955 | ||
5956 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5957 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5958 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5959 | ||
5960 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5961 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5962 | } |