Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
4a2f9c6a | 3 | Copyright (C) 1985,86,87,93,94,95,96,97,1998 Free Software Foundation, Inc. |
7ab12479 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1113d9db | 9 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 21 | |
18160b98 | 22 | #include <config.h> |
7ab12479 JB |
23 | #include "lisp.h" |
24 | #include "buffer.h" | |
3e4731a3 | 25 | #include "keyboard.h" |
44fa5b1e | 26 | #include "frame.h" |
7ab12479 JB |
27 | #include "window.h" |
28 | #include "commands.h" | |
29 | #include "indent.h" | |
30 | #include "termchar.h" | |
31 | #include "disptab.h" | |
dfcf069d | 32 | #include "dispextern.h" |
5500c422 GM |
33 | #include "blockinput.h" |
34 | #include "intervals.h" | |
35 | ||
6d55d620 | 36 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 37 | #include "xterm.h" |
5500c422 | 38 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
39 | #ifdef WINDOWSNT |
40 | #include "w32term.h" | |
41 | #endif | |
1e3c8885 EZ |
42 | #ifdef MSDOS |
43 | #include "msdos.h" | |
44 | #endif | |
5500c422 GM |
45 | |
46 | #ifndef max | |
47 | #define max(a, b) ((a) < (b) ? (b) : (a)) | |
dfcf069d | 48 | #endif |
7ab12479 | 49 | |
5500c422 | 50 | |
3f8ab7bd | 51 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
8a37516b | 52 | Lisp_Object Qwindow_size_fixed, Qleft_bitmap_area, Qright_bitmap_area; |
233a4a2c | 53 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 54 | |
5e14b1fc | 55 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 56 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
57 | static int count_windows P_ ((struct window *)); |
58 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
59 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
60 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
61 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 62 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 63 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 64 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 65 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 66 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
86c8e823 | 67 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 68 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 69 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
70 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
71 | Lisp_Object)); | |
67492200 GM |
72 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
73 | Lisp_Object, int)); | |
74 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
75 | Lisp_Object *)); | |
f95464e4 GM |
76 | static int foreach_window_1 P_ ((struct window *, |
77 | int (* fn) (struct window *, void *), | |
78 | void *)); | |
b7354ddf | 79 | |
7ab12479 JB |
80 | /* This is the window in which the terminal's cursor should |
81 | be left when nothing is being done with it. This must | |
82 | always be a leaf window, and its buffer is selected by | |
83 | the top level editing loop at the end of each command. | |
84 | ||
85 | This value is always the same as | |
44fa5b1e | 86 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
87 | |
88 | Lisp_Object selected_window; | |
89 | ||
67492200 GM |
90 | /* A list of all windows for use by next_window and Fwindow_list. |
91 | Functions creating or deleting windows should invalidate this cache | |
92 | by setting it to nil. */ | |
93 | ||
94 | Lisp_Object Vwindow_list; | |
95 | ||
5500c422 GM |
96 | /* The mini-buffer window of the selected frame. |
97 | Note that you cannot test for mini-bufferness of an arbitrary window | |
98 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 99 | the selected window. */ |
5500c422 | 100 | |
7ab12479 JB |
101 | Lisp_Object minibuf_window; |
102 | ||
103 | /* Non-nil means it is the window for C-M-v to scroll | |
5500c422 GM |
104 | when the mini-buffer is selected. */ |
105 | ||
7ab12479 JB |
106 | Lisp_Object Vminibuf_scroll_window; |
107 | ||
108 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 109 | |
7ab12479 JB |
110 | Lisp_Object Vother_window_scroll_buffer; |
111 | ||
7ab12479 | 112 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 113 | |
7ab12479 JB |
114 | Lisp_Object Vtemp_buffer_show_function; |
115 | ||
116 | /* If a window gets smaller than either of these, it is removed. */ | |
5500c422 | 117 | |
7ab12479 JB |
118 | int window_min_height; |
119 | int window_min_width; | |
120 | ||
121 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 122 | |
7ab12479 JB |
123 | int pop_up_windows; |
124 | ||
44fa5b1e | 125 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 126 | |
44fa5b1e | 127 | int pop_up_frames; |
7ab12479 | 128 | |
9c3da604 GM |
129 | /* Nonzero means reuse existing frames for displaying buffers. */ |
130 | ||
131 | int display_buffer_reuse_frames; | |
132 | ||
7ab12479 | 133 | /* Non-nil means use this function instead of default */ |
5500c422 | 134 | |
44fa5b1e | 135 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
136 | |
137 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 138 | |
7ab12479 JB |
139 | Lisp_Object Vdisplay_buffer_function; |
140 | ||
a90712c2 | 141 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 142 | |
a90712c2 RS |
143 | Lisp_Object Vspecial_display_buffer_names; |
144 | ||
145 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 146 | |
a90712c2 RS |
147 | Lisp_Object Vspecial_display_regexps; |
148 | ||
149 | /* Function to pop up a special frame. */ | |
5500c422 | 150 | |
a90712c2 RS |
151 | Lisp_Object Vspecial_display_function; |
152 | ||
855d8627 | 153 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 154 | |
855d8627 RS |
155 | Lisp_Object Vsame_window_buffer_names; |
156 | ||
157 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 158 | |
855d8627 RS |
159 | Lisp_Object Vsame_window_regexps; |
160 | ||
a58ec57d | 161 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 162 | |
a58ec57d RS |
163 | Lisp_Object Qtemp_buffer_show_hook; |
164 | ||
37962e60 | 165 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 166 | if that window is more than this high. */ |
5500c422 | 167 | |
7ab12479 JB |
168 | int split_height_threshold; |
169 | ||
170 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 171 | |
7ab12479 JB |
172 | int next_screen_context_lines; |
173 | ||
174 | /* Incremented for each window created. */ | |
5500c422 | 175 | |
7ab12479 JB |
176 | static int sequence_number; |
177 | ||
5b03d3c0 | 178 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 179 | |
5b03d3c0 RS |
180 | static int window_initialized; |
181 | ||
543f5fb1 | 182 | /* Hook to run when window config changes. */ |
5500c422 | 183 | |
543f5fb1 RS |
184 | Lisp_Object Qwindow_configuration_change_hook; |
185 | Lisp_Object Vwindow_configuration_change_hook; | |
186 | ||
9317a85d RS |
187 | /* Nonzero means scroll commands try to put point |
188 | at the same screen height as previously. */ | |
9317a85d | 189 | |
5500c422 GM |
190 | Lisp_Object Vscroll_preserve_screen_position; |
191 | ||
192 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 193 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 194 | static int inhibit_frame_unsplittable; |
5500c422 | 195 | #endif /* 0 */ |
7d601aaa | 196 | |
7ab12479 | 197 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 | 198 | |
9317a85d RS |
199 | extern int scroll_margin; |
200 | ||
dba06815 | 201 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
202 | \f |
203 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
204 | "Returns t if OBJECT is a window.") |
205 | (object) | |
206 | Lisp_Object object; | |
7ab12479 | 207 | { |
413430c5 | 208 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
209 | } |
210 | ||
806b4d9b | 211 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
212 | "Returns t if OBJECT is a window which is currently visible.") |
213 | (object) | |
214 | Lisp_Object object; | |
605be8af | 215 | { |
413430c5 | 216 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
217 | } |
218 | ||
7ab12479 JB |
219 | Lisp_Object |
220 | make_window () | |
221 | { | |
cffec418 | 222 | Lisp_Object val; |
7ab12479 | 223 | register struct window *p; |
cffec418 KH |
224 | register struct Lisp_Vector *vec; |
225 | int i; | |
226 | ||
227 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
228 | for (i = 0; i < VECSIZE (struct window); i++) | |
229 | vec->contents[i] = Qnil; | |
230 | vec->size = VECSIZE (struct window); | |
5500c422 | 231 | p = (struct window *) vec; |
d834a2e9 KH |
232 | XSETFASTINT (p->sequence_number, ++sequence_number); |
233 | XSETFASTINT (p->left, 0); | |
234 | XSETFASTINT (p->top, 0); | |
235 | XSETFASTINT (p->height, 0); | |
236 | XSETFASTINT (p->width, 0); | |
237 | XSETFASTINT (p->hscroll, 0); | |
f984d4fc | 238 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
239 | p->start = Fmake_marker (); |
240 | p->pointm = Fmake_marker (); | |
d834a2e9 | 241 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 242 | p->frame = Qnil; |
7ab12479 JB |
243 | p->display_table = Qnil; |
244 | p->dedicated = Qnil; | |
5500c422 GM |
245 | p->pseudo_window_p = 0; |
246 | bzero (&p->cursor, sizeof (p->cursor)); | |
247 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
248 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
249 | p->desired_matrix = p->current_matrix = 0; | |
250 | p->phys_cursor_type = -1; | |
251 | p->must_be_updated_p = 0; | |
252 | XSETFASTINT (p->window_end_vpos, 0); | |
253 | XSETFASTINT (p->window_end_pos, 0); | |
254 | p->window_end_valid = Qnil; | |
255 | p->vscroll = 0; | |
cffec418 | 256 | XSETWINDOW (val, p); |
5500c422 | 257 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 258 | p->frozen_window_start_p = 0; |
67492200 GM |
259 | |
260 | Vwindow_list = Qnil; | |
7ab12479 JB |
261 | return val; |
262 | } | |
263 | ||
264 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
265 | "Return the window that the cursor now appears in and commands apply to.") | |
266 | () | |
267 | { | |
268 | return selected_window; | |
269 | } | |
270 | ||
83762ba4 JB |
271 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
272 | "Return the window used now for minibuffers.\n\ | |
273 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
274 | used by that frame.") | |
275 | (frame) | |
276 | Lisp_Object frame; | |
7ab12479 | 277 | { |
83762ba4 | 278 | if (NILP (frame)) |
1ae1a37d GM |
279 | frame = selected_frame; |
280 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 | 281 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
282 | } |
283 | ||
605be8af | 284 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
285 | "Returns non-nil if WINDOW is a minibuffer window.") |
286 | (window) | |
287 | Lisp_Object window; | |
288 | { | |
289 | struct window *w = decode_window (window); | |
290 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
291 | } | |
292 | ||
81e4d465 MB |
293 | |
294 | /* Return true if POS is fully visible in the window W. If W's end | |
295 | position is not known, then return false. */ | |
296 | ||
297 | static int | |
298 | pos_fully_visible_in_window_p (pos, w) | |
299 | int pos; | |
300 | struct window *w; | |
301 | { | |
302 | struct glyph_row *first_row = &w->desired_matrix->rows[0]; | |
303 | struct glyph_row *last_row; | |
304 | ||
305 | if (pos < first_row->start.pos.charpos) | |
306 | /* POS is before the beginning of W. */ | |
307 | return 0; | |
308 | else if (pos < first_row->end.pos.charpos) | |
309 | /* POS is on the first row of W, so see if that row is fully visible. */ | |
310 | return !MATRIX_ROW_PARTIALLY_VISIBLE_P (first_row); | |
311 | ||
312 | if (NILP (w->window_end_valid)) | |
313 | /* We can't determine where the end is, so we don't know. */ | |
314 | return 0; | |
315 | ||
316 | last_row = &w->desired_matrix->rows[XFASTINT (w->window_end_vpos)]; | |
317 | ||
318 | if (pos < last_row->start.pos.charpos) | |
319 | /* POS is somewhere in the middle of the window, not on the first or | |
320 | last row, so it must be visible. */ | |
321 | return 1; | |
322 | else if (pos >= last_row->end.pos.charpos) | |
323 | /* POS is after the end of W. */ | |
324 | return 0; | |
325 | else | |
326 | /* POS is on the last row of W, so see if that row is fully visible. */ | |
327 | return !MATRIX_ROW_PARTIALLY_VISIBLE_P (last_row); | |
328 | } | |
329 | ||
330 | ||
7ab12479 | 331 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
81e4d465 | 332 | Spos_visible_in_window_p, 0, 3, 0, |
44fa5b1e | 333 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 | 334 | Returns nil if that position is scrolled vertically out of view.\n\ |
81e4d465 | 335 | If FULLY is non-nil, then only return t when POS is completely visible.\n\ |
7ab12479 | 336 | POS defaults to point; WINDOW, to the selected window.") |
81e4d465 MB |
337 | (pos, window, fully) |
338 | Lisp_Object pos, window, fully; | |
7ab12479 JB |
339 | { |
340 | register struct window *w; | |
7ab12479 JB |
341 | register int posint; |
342 | register struct buffer *buf; | |
9a132b1f GM |
343 | struct text_pos top; |
344 | Lisp_Object in_window; | |
7ab12479 | 345 | |
265a9e55 | 346 | if (NILP (pos)) |
5ce7b543 | 347 | posint = PT; |
7ab12479 JB |
348 | else |
349 | { | |
350 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
351 | posint = XINT (pos); | |
352 | } | |
353 | ||
605be8af | 354 | w = decode_window (window); |
9a132b1f | 355 | buf = XBUFFER (w->buffer); |
5500c422 | 356 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
7ab12479 | 357 | |
5500c422 GM |
358 | /* If position above window, it's not visible. */ |
359 | if (posint < CHARPOS (top)) | |
9a132b1f GM |
360 | in_window = Qnil; |
361 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
81e4d465 MB |
362 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) |
363 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
9a132b1f GM |
364 | /* If frame is up to date, and POSINT is < window end pos, use |
365 | that info. This doesn't work for POSINT == end pos, because | |
366 | the window end pos is actually the position _after_ the last | |
367 | char in the window. */ | |
81e4d465 MB |
368 | { |
369 | if (NILP (fully) || pos_fully_visible_in_window_p (posint, w)) | |
370 | in_window = Qt; | |
371 | else | |
372 | in_window = Qnil; | |
373 | } | |
9a132b1f GM |
374 | else if (posint > BUF_ZV (buf)) |
375 | in_window = Qnil; | |
376 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
377 | /* If window start is out of range, do something reasonable. */ | |
378 | in_window = Qnil; | |
7ab12479 JB |
379 | else |
380 | { | |
5500c422 | 381 | struct it it; |
5500c422 GM |
382 | start_display (&it, w, top); |
383 | move_it_to (&it, posint, 0, it.last_visible_y, -1, | |
9a132b1f | 384 | MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y); |
81e4d465 MB |
385 | if (IT_CHARPOS (it) == posint) |
386 | { | |
387 | if (NILP (fully)) | |
388 | in_window = Qt; | |
389 | else | |
390 | { | |
391 | struct glyph_row *pos_row = &w->desired_matrix->rows[it.vpos]; | |
392 | return MATRIX_ROW_PARTIALLY_VISIBLE_P(pos_row) ? Qnil : Qt; | |
393 | } | |
394 | } | |
395 | else | |
396 | in_window = Qnil; | |
7ab12479 | 397 | } |
9a132b1f GM |
398 | |
399 | return in_window; | |
7ab12479 JB |
400 | } |
401 | \f | |
402 | static struct window * | |
403 | decode_window (window) | |
404 | register Lisp_Object window; | |
405 | { | |
265a9e55 | 406 | if (NILP (window)) |
7ab12479 JB |
407 | return XWINDOW (selected_window); |
408 | ||
605be8af | 409 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
410 | return XWINDOW (window); |
411 | } | |
412 | ||
413 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
414 | "Return the buffer that WINDOW is displaying.") | |
415 | (window) | |
416 | Lisp_Object window; | |
417 | { | |
418 | return decode_window (window)->buffer; | |
419 | } | |
420 | ||
421 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
422 | "Return the number of lines in WINDOW (including its mode line).") | |
423 | (window) | |
424 | Lisp_Object window; | |
425 | { | |
426 | return decode_window (window)->height; | |
427 | } | |
428 | ||
429 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
430 | "Return the number of display columns in WINDOW.\n\ |
431 | This is the width that is usable columns available for text in WINDOW.\n\ | |
432 | If you want to find out how many columns WINDOW takes up,\n\ | |
433 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
434 | (window) |
435 | Lisp_Object window; | |
436 | { | |
ee61d94e | 437 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
438 | } |
439 | ||
440 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
441 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
442 | (window) | |
443 | Lisp_Object window; | |
444 | { | |
445 | return decode_window (window)->hscroll; | |
446 | } | |
447 | ||
448 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
449 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
450 | NCOL should be zero or positive.") | |
451 | (window, ncol) | |
452 | register Lisp_Object window, ncol; | |
453 | { | |
454 | register struct window *w; | |
455 | ||
456 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 457 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 458 | w = decode_window (window); |
7f4161e0 | 459 | if (XINT (w->hscroll) != XINT (ncol)) |
b1599b4c GM |
460 | /* Prevent redisplay shortcuts */ |
461 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7ab12479 JB |
462 | w->hscroll = ncol; |
463 | return ncol; | |
464 | } | |
465 | ||
190eb263 RS |
466 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
467 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
468 | "Return WINDOW's redisplay end trigger value.\n\ | |
469 | See `set-window-redisplay-end-trigger' for more information.") | |
470 | (window) | |
471 | Lisp_Object window; | |
472 | { | |
473 | return decode_window (window)->redisplay_end_trigger; | |
474 | } | |
475 | ||
476 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
477 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
478 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
479 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
480 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
481 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
482 | with two arguments: WINDOW, and the end trigger value.\n\ | |
483 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
484 | (window, value) |
485 | register Lisp_Object window, value; | |
486 | { | |
487 | register struct window *w; | |
488 | ||
489 | w = decode_window (window); | |
490 | w->redisplay_end_trigger = value; | |
491 | return value; | |
492 | } | |
493 | ||
7ab12479 JB |
494 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
495 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 496 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
497 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
498 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
499 | and its mode-line.") | |
500 | (window) | |
501 | Lisp_Object window; | |
502 | { | |
503 | register struct window *w = decode_window (window); | |
504 | ||
505 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 506 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
507 | Fcons (make_number (XFASTINT (w->top) |
508 | + XFASTINT (w->height)), | |
509 | Qnil)))); | |
510 | } | |
511 | ||
fbad6f9a | 512 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
513 | If it is not, return 0; |
514 | if it is in the window's text area, | |
515 | set *x and *y to its location relative to the upper left corner | |
516 | of the window, and | |
517 | return 1; | |
518 | if it is on the window's modeline, return 2; | |
519 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
520 | return 3. |
521 | if it is on the window's top line, return 4; | |
fbad6f9a GM |
522 | if it is in the bitmap area to the left/right of the window, |
523 | return 5 or 6, and convert *X and *Y to window-relative corrdinates. | |
5500c422 GM |
524 | |
525 | X and Y are frame relative pixel coordinates. */ | |
526 | ||
d5783c40 JB |
527 | static int |
528 | coordinates_in_window (w, x, y) | |
529 | register struct window *w; | |
530 | register int *x, *y; | |
531 | { | |
5500c422 GM |
532 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
533 | int left_x, right_x, top_y, bottom_y; | |
b46dfc64 | 534 | int flags_area_width = FRAME_LEFT_FLAGS_AREA_WIDTH (f); |
d5783c40 | 535 | |
466539bc EZ |
536 | /* In what's below, we subtract 1 when computing right_x because we |
537 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
538 | if (w->pseudo_window_p) |
539 | { | |
540 | left_x = 0; | |
466539bc | 541 | right_x = XFASTINT (w->width) * CANON_Y_UNIT (f) - 1; |
5500c422 GM |
542 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); |
543 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
544 | } | |
545 | else | |
546 | { | |
2add4349 | 547 | left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w) |
50df5e5a | 548 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
466539bc | 549 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1; |
2add4349 | 550 | top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w) |
50df5e5a | 551 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
5500c422 GM |
552 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); |
553 | } | |
37962e60 | 554 | |
5500c422 GM |
555 | if (*y < top_y |
556 | || *y >= bottom_y | |
557 | || *x < (left_x | |
558 | - flags_area_width | |
559 | - (FRAME_LEFT_SCROLL_BAR_WIDTH (f) | |
560 | * CANON_X_UNIT (f))) | |
561 | || *x > right_x + flags_area_width) | |
562 | /* Completely outside anything interesting. */ | |
563 | return 0; | |
564 | else if (WINDOW_WANTS_MODELINE_P (w) | |
565 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) | |
566 | /* On the mode line. */ | |
567 | return 2; | |
045dee35 GM |
568 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
569 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) | |
5500c422 GM |
570 | /* On the top line. */ |
571 | return 4; | |
76832439 EZ |
572 | /* Need to say "*x > right_x" rather than >=, since on character |
573 | terminals, the vertical line's x coordinate is right_x. */ | |
574 | else if (*x < left_x || *x > right_x) | |
fbad6f9a GM |
575 | { |
576 | /* Other lines than the mode line don't include flags areas and | |
577 | scroll bars on the left. */ | |
578 | ||
579 | /* Convert X and Y to window-relative pixel coordinates. */ | |
580 | *x -= left_x; | |
581 | *y -= top_y; | |
582 | return *x < left_x ? 5 : 6; | |
583 | } | |
76832439 | 584 | /* Here, too, "*x > right_x" is because of character terminals. */ |
5500c422 GM |
585 | else if (!w->pseudo_window_p |
586 | && !WINDOW_RIGHTMOST_P (w) | |
76832439 | 587 | && *x > right_x - CANON_X_UNIT (f)) |
5500c422 GM |
588 | /* On the border on the right side of the window? Assume that |
589 | this area begins at RIGHT_X minus a canonical char width. */ | |
590 | return 3; | |
591 | else | |
592 | { | |
593 | /* Convert X and Y to window-relative pixel coordinates. */ | |
594 | *x -= left_x; | |
595 | *y -= top_y; | |
596 | return 1; | |
597 | } | |
d5783c40 JB |
598 | } |
599 | ||
600 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
601 | Scoordinates_in_window_p, 2, 2, 0, | |
602 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 603 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 604 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 605 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 606 | frame.\n\ |
d5783c40 JB |
607 | If COORDINATES are in the text portion of WINDOW,\n\ |
608 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 609 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
045dee35 | 610 | If they are in the top mode line of WINDOW, `header-line' is returned.\n\ |
fbad6f9a GM |
611 | If they are in the bitmap-area to the left of the window,\n\ |
612 | `left-bitmap-area' is returned, if they are in the area on the right of\n\ | |
613 | the window, `right-bitmap-area' is returned.\n\ | |
d5783c40 | 614 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 615 | `vertical-line' is returned.") |
d5783c40 JB |
616 | (coordinates, window) |
617 | register Lisp_Object coordinates, window; | |
618 | { | |
5500c422 GM |
619 | struct window *w; |
620 | struct frame *f; | |
d5783c40 | 621 | int x, y; |
5500c422 | 622 | Lisp_Object lx, ly; |
d5783c40 | 623 | |
605be8af | 624 | CHECK_LIVE_WINDOW (window, 0); |
5500c422 GM |
625 | w = XWINDOW (window); |
626 | f = XFRAME (w->frame); | |
d5783c40 | 627 | CHECK_CONS (coordinates, 1); |
5500c422 GM |
628 | lx = Fcar (coordinates); |
629 | ly = Fcdr (coordinates); | |
630 | CHECK_NUMBER_OR_FLOAT (lx, 1); | |
631 | CHECK_NUMBER_OR_FLOAT (ly, 1); | |
632 | x = PIXEL_X_FROM_CANON_X (f, lx); | |
633 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
634 | ||
635 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 JB |
636 | { |
637 | case 0: /* NOT in window at all. */ | |
638 | return Qnil; | |
639 | ||
640 | case 1: /* In text part of window. */ | |
5500c422 GM |
641 | /* X and Y are now window relative pixel coordinates. |
642 | Convert them to canonical char units before returning | |
643 | them. */ | |
644 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), | |
645 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 JB |
646 | |
647 | case 2: /* In mode line of window. */ | |
648 | return Qmode_line; | |
37962e60 | 649 | |
d5783c40 | 650 | case 3: /* On right border of window. */ |
e5d77022 | 651 | return Qvertical_line; |
d5783c40 | 652 | |
5500c422 | 653 | case 4: |
045dee35 | 654 | return Qheader_line; |
5500c422 | 655 | |
fbad6f9a GM |
656 | case 5: |
657 | return Qleft_bitmap_area; | |
658 | ||
659 | case 6: | |
660 | return Qright_bitmap_area; | |
661 | ||
d5783c40 JB |
662 | default: |
663 | abort (); | |
664 | } | |
665 | } | |
666 | ||
67492200 GM |
667 | |
668 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
669 | Check if window W contains coordinates specified by USER_DATA which |
670 | is actually a pointer to a struct check_window_data CW. | |
671 | ||
672 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
673 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 674 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
675 | zero from this function to stop iterating over windows. */ |
676 | ||
677 | struct check_window_data | |
678 | { | |
679 | Lisp_Object *window; | |
680 | int *x, *y, *part; | |
681 | }; | |
67492200 GM |
682 | |
683 | static int | |
f95464e4 | 684 | check_window_containing (w, user_data) |
67492200 | 685 | struct window *w; |
f95464e4 | 686 | void *user_data; |
67492200 | 687 | { |
f95464e4 | 688 | struct check_window_data *cw = (struct check_window_data *) user_data; |
67492200 GM |
689 | int found; |
690 | ||
f95464e4 | 691 | found = coordinates_in_window (w, cw->x, cw->y); |
67492200 GM |
692 | if (found) |
693 | { | |
f95464e4 GM |
694 | *cw->part = found - 1; |
695 | XSETWINDOW (*cw->window, w); | |
67492200 GM |
696 | } |
697 | ||
698 | return !found; | |
699 | } | |
700 | ||
701 | ||
5500c422 GM |
702 | /* Find the window containing frame-relative pixel position X/Y and |
703 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
704 | set *PART to 1; if it is on the separating line between the window | |
705 | and its right sibling, set it to 2; otherwise set it to 0. If | |
706 | there is no window under X, Y return nil and leave *PART | |
67492200 GM |
707 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
708 | ||
709 | This function was previously implemented with a loop cycling over | |
710 | windows with Fnext_window, and starting with the frame's selected | |
711 | window. It turned out that this doesn't work with an | |
712 | implementation of next_window using Vwindow_list, because | |
713 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
714 | tree of F when this function is called asynchronously from | |
715 | note_mouse_highlight. The original loop didn't terminate in this | |
716 | case. */ | |
5500c422 | 717 | |
7ab12479 | 718 | Lisp_Object |
67492200 GM |
719 | window_from_coordinates (f, x, y, part, tool_bar_p) |
720 | struct frame *f; | |
7ab12479 | 721 | int x, y; |
d5783c40 | 722 | int *part; |
9ea173e8 | 723 | int tool_bar_p; |
7ab12479 | 724 | { |
67492200 | 725 | Lisp_Object window; |
f95464e4 | 726 | struct check_window_data cw; |
5500c422 | 727 | |
67492200 | 728 | window = Qnil; |
f95464e4 GM |
729 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
730 | foreach_window (f, check_window_containing, &cw); | |
67492200 GM |
731 | |
732 | /* If not found above, see if it's in the tool bar window, if a tool | |
733 | bar exists. */ | |
734 | if (NILP (window) | |
735 | && tool_bar_p | |
736 | && WINDOWP (f->tool_bar_window) | |
737 | && XINT (XWINDOW (f->tool_bar_window)->height) > 0 | |
738 | && coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y)) | |
5500c422 GM |
739 | { |
740 | *part = 0; | |
67492200 | 741 | window = f->tool_bar_window; |
5500c422 | 742 | } |
37962e60 | 743 | |
67492200 | 744 | return window; |
7ab12479 JB |
745 | } |
746 | ||
ab17c3f2 | 747 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 748 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
749 | If omitted, FRAME defaults to the currently selected frame.\n\ |
750 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 751 | column 0.") |
b0c33a94 RS |
752 | (x, y, frame) |
753 | Lisp_Object x, y, frame; | |
7ab12479 JB |
754 | { |
755 | int part; | |
5500c422 | 756 | struct frame *f; |
7ab12479 | 757 | |
44fa5b1e | 758 | if (NILP (frame)) |
1ae1a37d GM |
759 | frame = selected_frame; |
760 | CHECK_LIVE_FRAME (frame, 2); | |
5500c422 | 761 | f = XFRAME (frame); |
7ab12479 | 762 | |
5500c422 GM |
763 | /* Check that arguments are integers or floats. */ |
764 | CHECK_NUMBER_OR_FLOAT (x, 0); | |
765 | CHECK_NUMBER_OR_FLOAT (y, 1); | |
766 | ||
767 | return window_from_coordinates (f, | |
768 | PIXEL_X_FROM_CANON_X (f, x), | |
769 | PIXEL_Y_FROM_CANON_Y (f, y), | |
770 | &part, 0); | |
7ab12479 JB |
771 | } |
772 | ||
773 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
774 | "Return current value of point in WINDOW.\n\ | |
775 | For a nonselected window, this is the value point would have\n\ | |
776 | if that window were selected.\n\ | |
777 | \n\ | |
778 | Note that, when WINDOW is the selected window and its buffer\n\ | |
779 | is also currently selected, the value returned is the same as (point).\n\ | |
780 | It would be more strictly correct to return the `top-level' value\n\ | |
781 | of point, outside of any save-excursion forms.\n\ | |
782 | But that is hard to define.") | |
783 | (window) | |
784 | Lisp_Object window; | |
785 | { | |
786 | register struct window *w = decode_window (window); | |
787 | ||
788 | if (w == XWINDOW (selected_window) | |
789 | && current_buffer == XBUFFER (w->buffer)) | |
790 | return Fpoint (); | |
791 | return Fmarker_position (w->pointm); | |
792 | } | |
793 | ||
794 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
795 | "Return position at which display currently starts in WINDOW.\n\ |
796 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
797 | (window) |
798 | Lisp_Object window; | |
799 | { | |
800 | return Fmarker_position (decode_window (window)->start); | |
801 | } | |
802 | ||
8646118f RS |
803 | /* This is text temporarily removed from the doc string below. |
804 | ||
7250968e RS |
805 | This function returns nil if the position is not currently known.\n\ |
806 | That happens when redisplay is preempted and doesn't finish.\n\ | |
807 | If in that case you want to compute where the end of the window would\n\ | |
808 | have been if redisplay had finished, do this:\n\ | |
809 | (save-excursion\n\ | |
810 | (goto-char (window-start window))\n\ | |
811 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
812 | (point))") */ |
813 | ||
478292ed | 814 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
8646118f RS |
815 | "Return position at which display currently ends in WINDOW.\n\ |
816 | This is updated by redisplay, when it runs to completion.\n\ | |
817 | Simply changing the buffer text or setting `window-start'\n\ | |
478292ed RS |
818 | does not update this value.\n\ |
819 | If UP-TO-DATE is non-nil, compute the up-to-date position\n\ | |
820 | if it isn't already recorded.") | |
821 | (window, update) | |
822 | Lisp_Object window, update; | |
7ab12479 JB |
823 | { |
824 | Lisp_Object value; | |
825 | struct window *w = decode_window (window); | |
5a41ab94 RS |
826 | Lisp_Object buf; |
827 | ||
828 | buf = w->buffer; | |
829 | CHECK_BUFFER (buf, 0); | |
830 | ||
8646118f | 831 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
832 | /* If we don't know the end position, return nil. |
833 | The user can compute it with vertical-motion if he wants to. | |
834 | It would be nicer to do it automatically, | |
835 | but that's so slow that it would probably bother people. */ | |
836 | if (NILP (w->window_end_valid)) | |
837 | return Qnil; | |
8646118f | 838 | #endif |
7250968e | 839 | |
478292ed RS |
840 | if (! NILP (update) |
841 | && ! (! NILP (w->window_end_valid) | |
842 | && XFASTINT (w->last_modified) >= MODIFF)) | |
843 | { | |
cbc099e5 GM |
844 | struct text_pos startp; |
845 | struct it it; | |
2d6d9df0 GM |
846 | |
847 | /* In case W->start is out of the range, use something | |
848 | reasonable. This situation occured when loading a file with | |
849 | `-l' containing a call to `rmail' with subsequent other | |
850 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 851 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 852 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 853 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 854 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 855 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 856 | else |
cbc099e5 GM |
857 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
858 | ||
859 | /* Cannot use Fvertical_motion because that function doesn't | |
860 | cope with variable-height lines. */ | |
861 | start_display (&it, w, startp); | |
862 | move_it_vertically (&it, window_box_height (w)); | |
863 | value = make_number (IT_CHARPOS (it)); | |
478292ed RS |
864 | } |
865 | else | |
cbc099e5 | 866 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
867 | |
868 | return value; | |
869 | } | |
870 | ||
871 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
872 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
873 | (window, pos) | |
874 | Lisp_Object window, pos; | |
875 | { | |
876 | register struct window *w = decode_window (window); | |
877 | ||
878 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
e90c4fe6 RS |
879 | if (w == XWINDOW (selected_window) |
880 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
881 | Fgoto_char (pos); |
882 | else | |
883 | set_marker_restricted (w->pointm, pos, w->buffer); | |
ce7fae7d | 884 | |
7ab12479 JB |
885 | return pos; |
886 | } | |
887 | ||
888 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
889 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
890 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
891 | from overriding motion of point in order to display at this exact start.") | |
892 | (window, pos, noforce) | |
893 | Lisp_Object window, pos, noforce; | |
894 | { | |
895 | register struct window *w = decode_window (window); | |
896 | ||
897 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
898 | set_marker_restricted (w->start, pos, w->buffer); | |
899 | /* this is not right, but much easier than doing what is right. */ | |
900 | w->start_at_line_beg = Qnil; | |
265a9e55 | 901 | if (NILP (noforce)) |
7ab12479 JB |
902 | w->force_start = Qt; |
903 | w->update_mode_line = Qt; | |
d834a2e9 | 904 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 905 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
906 | if (!EQ (window, selected_window)) |
907 | windows_or_buffers_changed++; | |
ce7fae7d | 908 | |
7ab12479 JB |
909 | return pos; |
910 | } | |
911 | ||
912 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
913 | 1, 1, 0, | |
914 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 915 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
916 | (window) |
917 | Lisp_Object window; | |
918 | { | |
919 | return decode_window (window)->dedicated; | |
920 | } | |
921 | ||
d207b766 RS |
922 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
923 | Sset_window_dedicated_p, 2, 2, 0, | |
924 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
925 | If it is dedicated, Emacs will not automatically change\n\ | |
926 | which buffer appears in it.\n\ | |
927 | The second argument is the new value for the dedication flag;\n\ | |
928 | non-nil means yes.") | |
7ab12479 JB |
929 | (window, arg) |
930 | Lisp_Object window, arg; | |
931 | { | |
932 | register struct window *w = decode_window (window); | |
933 | ||
265a9e55 | 934 | if (NILP (arg)) |
7ab12479 JB |
935 | w->dedicated = Qnil; |
936 | else | |
d207b766 | 937 | w->dedicated = Qt; |
7ab12479 JB |
938 | |
939 | return w->dedicated; | |
940 | } | |
941 | ||
942 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
943 | 0, 1, 0, | |
944 | "Return the display-table that WINDOW is using.") | |
945 | (window) | |
946 | Lisp_Object window; | |
947 | { | |
948 | return decode_window (window)->display_table; | |
949 | } | |
950 | ||
5500c422 GM |
951 | /* Get the display table for use on window W. This is either W's |
952 | display table or W's buffer's display table. Ignore the specified | |
953 | tables if they are not valid; if no valid table is specified, | |
954 | return 0. */ | |
7ab12479 | 955 | |
319315f1 | 956 | struct Lisp_Char_Table * |
7ab12479 JB |
957 | window_display_table (w) |
958 | struct window *w; | |
959 | { | |
c756cdbe GM |
960 | struct Lisp_Char_Table *dp = NULL; |
961 | ||
962 | if (DISP_TABLE_P (w->display_table)) | |
963 | dp = XCHAR_TABLE (w->display_table); | |
964 | else if (BUFFERP (w->buffer)) | |
965 | { | |
966 | struct buffer *b = XBUFFER (w->buffer); | |
967 | ||
968 | if (DISP_TABLE_P (b->display_table)) | |
969 | dp = XCHAR_TABLE (b->display_table); | |
970 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
971 | dp = XCHAR_TABLE (Vstandard_display_table); | |
972 | } | |
171d003c | 973 | |
c756cdbe | 974 | return dp; |
7ab12479 JB |
975 | } |
976 | ||
3a2712f9 | 977 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
978 | "Set WINDOW's display-table to TABLE.") |
979 | (window, table) | |
980 | register Lisp_Object window, table; | |
981 | { | |
982 | register struct window *w; | |
7ab12479 JB |
983 | |
984 | w = decode_window (window); | |
985 | w->display_table = table; | |
986 | return table; | |
987 | } | |
988 | \f | |
989 | /* Record info on buffer window w is displaying | |
990 | when it is about to cease to display that buffer. */ | |
dfcf069d | 991 | static void |
7ab12479 JB |
992 | unshow_buffer (w) |
993 | register struct window *w; | |
994 | { | |
12cae7c0 | 995 | Lisp_Object buf; |
b73ea88e | 996 | struct buffer *b; |
7ab12479 | 997 | |
12cae7c0 | 998 | buf = w->buffer; |
b73ea88e RS |
999 | b = XBUFFER (buf); |
1000 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1001 | abort (); |
1002 | ||
573f41ab | 1003 | #if 0 |
7ab12479 JB |
1004 | if (w == XWINDOW (selected_window) |
1005 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1006 | /* Do this except when the selected window's buffer | |
1007 | is being removed from some other window. */ | |
573f41ab RS |
1008 | #endif |
1009 | /* last_window_start records the start position that this buffer | |
1010 | had in the last window to be disconnected from it. | |
1011 | Now that this statement is unconditional, | |
1012 | it is possible for the buffer to be displayed in the | |
1013 | selected window, while last_window_start reflects another | |
1014 | window which was recently showing the same buffer. | |
1015 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1016 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1017 | |
1018 | /* Point in the selected window's buffer | |
1019 | is actually stored in that buffer, and the window's pointm isn't used. | |
1020 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1021 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1022 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1023 | && !(WINDOWP (b->last_selected_window) |
1024 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1025 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1026 | temp_set_point_both (b, |
1027 | clip_to_bounds (BUF_BEGV (b), | |
1028 | XMARKER (w->pointm)->charpos, | |
1029 | BUF_ZV (b)), | |
1030 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1031 | marker_byte_position (w->pointm), | |
1032 | BUF_ZV_BYTE (b))); | |
719eaeb1 | 1033 | |
8801a864 KR |
1034 | if (WINDOWP (b->last_selected_window) |
1035 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1036 | b->last_selected_window = Qnil; |
7ab12479 JB |
1037 | } |
1038 | ||
1039 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1040 | static void |
7ab12479 JB |
1041 | replace_window (old, replacement) |
1042 | Lisp_Object old, replacement; | |
1043 | { | |
1044 | register Lisp_Object tem; | |
1045 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1046 | ||
44fa5b1e JB |
1047 | /* If OLD is its frame's root_window, then replacement is the new |
1048 | root_window for that frame. */ | |
7ab12479 | 1049 | |
7f4161e0 | 1050 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1051 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
1052 | |
1053 | p->left = o->left; | |
1054 | p->top = o->top; | |
1055 | p->width = o->width; | |
1056 | p->height = o->height; | |
5500c422 GM |
1057 | p->desired_matrix = p->current_matrix = 0; |
1058 | p->vscroll = 0; | |
1059 | bzero (&p->cursor, sizeof (p->cursor)); | |
1060 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1061 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1062 | p->phys_cursor_type = -1; | |
1063 | p->must_be_updated_p = 0; | |
1064 | p->pseudo_window_p = 0; | |
1065 | XSETFASTINT (p->window_end_vpos, 0); | |
1066 | XSETFASTINT (p->window_end_pos, 0); | |
1067 | p->window_end_valid = Qnil; | |
7bbb5782 | 1068 | p->frozen_window_start_p = 0; |
f984d4fc | 1069 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
1070 | |
1071 | p->next = tem = o->next; | |
265a9e55 | 1072 | if (!NILP (tem)) |
7ab12479 JB |
1073 | XWINDOW (tem)->prev = replacement; |
1074 | ||
1075 | p->prev = tem = o->prev; | |
265a9e55 | 1076 | if (!NILP (tem)) |
7ab12479 JB |
1077 | XWINDOW (tem)->next = replacement; |
1078 | ||
1079 | p->parent = tem = o->parent; | |
265a9e55 | 1080 | if (!NILP (tem)) |
7ab12479 JB |
1081 | { |
1082 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1083 | XWINDOW (tem)->vchild = replacement; | |
1084 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1085 | XWINDOW (tem)->hchild = replacement; | |
1086 | } | |
1087 | ||
1088 | /*** Here, if replacement is a vertical combination | |
1089 | and so is its new parent, we should make replacement's | |
1090 | children be children of that parent instead. ***/ | |
1091 | } | |
1092 | ||
1093 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
1094 | "Remove WINDOW from the display. Default is selected window.") | |
1095 | (window) | |
1096 | register Lisp_Object window; | |
543f5fb1 RS |
1097 | { |
1098 | delete_window (window); | |
1099 | ||
1100 | if (! NILP (Vwindow_configuration_change_hook) | |
1101 | && ! NILP (Vrun_hooks)) | |
1102 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1103 | ||
1104 | return Qnil; | |
1105 | } | |
1106 | ||
5e14b1fc | 1107 | void |
543f5fb1 RS |
1108 | delete_window (window) |
1109 | register Lisp_Object window; | |
7ab12479 JB |
1110 | { |
1111 | register Lisp_Object tem, parent, sib; | |
1112 | register struct window *p; | |
1113 | register struct window *par; | |
5500c422 | 1114 | FRAME_PTR frame; |
7ab12479 | 1115 | |
605be8af JB |
1116 | /* Because this function is called by other C code on non-leaf |
1117 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1118 | so we can't decode_window here. */ | |
265a9e55 | 1119 | if (NILP (window)) |
7ab12479 JB |
1120 | window = selected_window; |
1121 | else | |
1122 | CHECK_WINDOW (window, 0); | |
7ab12479 | 1123 | p = XWINDOW (window); |
605be8af JB |
1124 | |
1125 | /* It's okay to delete an already-deleted window. */ | |
1126 | if (NILP (p->buffer) | |
1127 | && NILP (p->hchild) | |
1128 | && NILP (p->vchild)) | |
296b535c | 1129 | return; |
605be8af | 1130 | |
7ab12479 | 1131 | parent = p->parent; |
265a9e55 | 1132 | if (NILP (parent)) |
7ab12479 JB |
1133 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1134 | par = XWINDOW (parent); | |
1135 | ||
1136 | windows_or_buffers_changed++; | |
67492200 | 1137 | Vwindow_list = Qnil; |
5500c422 GM |
1138 | frame = XFRAME (WINDOW_FRAME (p)); |
1139 | FRAME_WINDOW_SIZES_CHANGED (frame) = 1; | |
7ab12479 | 1140 | |
605be8af JB |
1141 | /* Are we trying to delete any frame's selected window? */ |
1142 | { | |
0def0403 | 1143 | Lisp_Object frame, pwindow; |
605be8af | 1144 | |
0def0403 RS |
1145 | /* See if the frame's selected window is either WINDOW |
1146 | or any subwindow of it, by finding all that window's parents | |
1147 | and comparing each one with WINDOW. */ | |
1148 | frame = WINDOW_FRAME (XWINDOW (window)); | |
1149 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
1150 | ||
1151 | while (!NILP (pwindow)) | |
1152 | { | |
1153 | if (EQ (window, pwindow)) | |
1154 | break; | |
1155 | pwindow = XWINDOW (pwindow)->parent; | |
1156 | } | |
1157 | ||
1158 | if (EQ (window, pwindow)) | |
605be8af | 1159 | { |
89bca612 RS |
1160 | Lisp_Object alternative; |
1161 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
1162 | |
1163 | /* If we're about to delete the selected window on the | |
1164 | selected frame, then we should use Fselect_window to select | |
1165 | the new window. On the other hand, if we're about to | |
1166 | delete the selected window on any other frame, we shouldn't do | |
1167 | anything but set the frame's selected_window slot. */ | |
1168 | if (EQ (window, selected_window)) | |
1169 | Fselect_window (alternative); | |
1170 | else | |
0def0403 | 1171 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
1172 | } |
1173 | } | |
7ab12479 JB |
1174 | |
1175 | tem = p->buffer; | |
1176 | /* tem is null for dummy parent windows | |
1177 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1178 | if (!NILP (tem)) |
7ab12479 JB |
1179 | { |
1180 | unshow_buffer (p); | |
1181 | unchain_marker (p->pointm); | |
1182 | unchain_marker (p->start); | |
7ab12479 JB |
1183 | } |
1184 | ||
05e71564 GM |
1185 | /* Free window glyph matrices. It is sure that they are allocated |
1186 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1187 | events and other events that access glyph matrices are not | |
1188 | processed while we are changing them. */ | |
1189 | BLOCK_INPUT; | |
5500c422 GM |
1190 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (frame))); |
1191 | ||
7ab12479 | 1192 | tem = p->next; |
265a9e55 | 1193 | if (!NILP (tem)) |
7ab12479 JB |
1194 | XWINDOW (tem)->prev = p->prev; |
1195 | ||
1196 | tem = p->prev; | |
265a9e55 | 1197 | if (!NILP (tem)) |
7ab12479 JB |
1198 | XWINDOW (tem)->next = p->next; |
1199 | ||
1200 | if (EQ (window, par->hchild)) | |
1201 | par->hchild = p->next; | |
1202 | if (EQ (window, par->vchild)) | |
1203 | par->vchild = p->next; | |
1204 | ||
1205 | /* Find one of our siblings to give our space to. */ | |
1206 | sib = p->prev; | |
265a9e55 | 1207 | if (NILP (sib)) |
7ab12479 JB |
1208 | { |
1209 | /* If p gives its space to its next sibling, that sibling needs | |
1210 | to have its top/left side pulled back to where p's is. | |
1211 | set_window_{height,width} will re-position the sibling's | |
1212 | children. */ | |
1213 | sib = p->next; | |
7f4161e0 JB |
1214 | XWINDOW (sib)->top = p->top; |
1215 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1216 | } |
1217 | ||
1218 | /* Stretch that sibling. */ | |
265a9e55 | 1219 | if (!NILP (par->vchild)) |
7ab12479 JB |
1220 | set_window_height (sib, |
1221 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1222 | 1); | |
265a9e55 | 1223 | if (!NILP (par->hchild)) |
7ab12479 JB |
1224 | set_window_width (sib, |
1225 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1226 | 1); | |
1227 | ||
1228 | /* If parent now has only one child, | |
1229 | put the child into the parent's place. */ | |
7ab12479 | 1230 | tem = par->hchild; |
265a9e55 | 1231 | if (NILP (tem)) |
7ab12479 | 1232 | tem = par->vchild; |
265a9e55 | 1233 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1234 | replace_window (parent, tem); |
605be8af JB |
1235 | |
1236 | /* Since we may be deleting combination windows, we must make sure that | |
1237 | not only p but all its children have been marked as deleted. */ | |
1238 | if (! NILP (p->hchild)) | |
1239 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1240 | else if (! NILP (p->vchild)) | |
1241 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1242 | ||
1243 | /* Mark this window as deleted. */ | |
1244 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1245 | |
1246 | /* Adjust glyph matrices. */ | |
1247 | adjust_glyphs (frame); | |
05e71564 | 1248 | UNBLOCK_INPUT; |
7ab12479 | 1249 | } |
67492200 GM |
1250 | |
1251 | ||
7ab12479 | 1252 | \f |
67492200 GM |
1253 | /*********************************************************************** |
1254 | Window List | |
1255 | ***********************************************************************/ | |
1256 | ||
f95464e4 GM |
1257 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1258 | pointer. This is a callback function for foreach_window, used in | |
1259 | function window_list. */ | |
67492200 GM |
1260 | |
1261 | static int | |
f95464e4 | 1262 | add_window_to_list (w, user_data) |
67492200 | 1263 | struct window *w; |
f95464e4 | 1264 | void *user_data; |
67492200 | 1265 | { |
f95464e4 | 1266 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1267 | Lisp_Object window; |
1268 | XSETWINDOW (window, w); | |
212116d6 | 1269 | *list = Fcons (window, *list); |
67492200 GM |
1270 | return 1; |
1271 | } | |
1272 | ||
1273 | ||
1274 | /* Return a list of all windows, for use by next_window. If | |
1275 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1276 | list, cache it in Vwindow_list, and return that. */ | |
1277 | ||
1278 | static Lisp_Object | |
1279 | window_list () | |
1280 | { | |
1281 | if (!CONSP (Vwindow_list)) | |
1282 | { | |
1283 | Lisp_Object tail; | |
212116d6 | 1284 | |
67492200 GM |
1285 | Vwindow_list = Qnil; |
1286 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1287 | { |
1288 | Lisp_Object args[2]; | |
1289 | ||
1290 | /* We are visiting windows in canonical order, and add | |
1291 | new windows at the front of args[1], which means we | |
1292 | have to reverse this list at the end. */ | |
1293 | args[1] = Qnil; | |
1294 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1295 | args[0] = Vwindow_list; | |
1296 | args[1] = Fnreverse (args[1]); | |
1297 | Vwindow_list = Fnconc (2, args); | |
1298 | } | |
67492200 GM |
1299 | } |
1300 | ||
1301 | return Vwindow_list; | |
1302 | } | |
1303 | ||
1304 | ||
118ea242 GM |
1305 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1306 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1307 | |
118ea242 GM |
1308 | MINIBUF t means WINDOW may be minibuffer windows. |
1309 | `lambda' means WINDOW may not be a minibuffer window. | |
1310 | a window means a specific minibuffer window | |
67492200 | 1311 | |
118ea242 GM |
1312 | ALL_FRAMES t means search all frames, |
1313 | nil means search just current frame, | |
1314 | `visible' means search just visible frames, | |
1315 | 0 means search visible and iconified frames, | |
1316 | a window means search the frame that window belongs to, | |
1317 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1318 | |
1319 | static int | |
118ea242 GM |
1320 | candidate_window_p (window, owindow, minibuf, all_frames) |
1321 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1322 | { |
1323 | struct window *w = XWINDOW (window); | |
1324 | struct frame *f = XFRAME (w->frame); | |
1325 | int candidate_p = 1; | |
1326 | ||
1327 | if (!BUFFERP (w->buffer)) | |
1328 | candidate_p = 0; | |
1329 | else if (MINI_WINDOW_P (w) | |
1330 | && (EQ (minibuf, Qlambda) | |
1331 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1332 | { | |
1333 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1334 | If it is a window, consider only that one. */ | |
1335 | candidate_p = 0; | |
1336 | } | |
118ea242 GM |
1337 | else if (EQ (all_frames, Qt)) |
1338 | candidate_p = 1; | |
67492200 | 1339 | else if (NILP (all_frames)) |
118ea242 GM |
1340 | { |
1341 | xassert (WINDOWP (owindow)); | |
1342 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1343 | } | |
67492200 GM |
1344 | else if (EQ (all_frames, Qvisible)) |
1345 | { | |
1346 | FRAME_SAMPLE_VISIBILITY (f); | |
1347 | candidate_p = FRAME_VISIBLE_P (f); | |
1348 | } | |
1349 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1350 | { | |
1351 | FRAME_SAMPLE_VISIBILITY (f); | |
1352 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1353 | } | |
67492200 GM |
1354 | else if (WINDOWP (all_frames)) |
1355 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1356 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1357 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1358 | else if (FRAMEP (all_frames)) |
1359 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1360 | |
1361 | return candidate_p; | |
1362 | } | |
1363 | ||
1364 | ||
1365 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1366 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1367 | ALL_FRAMES. */ | |
1368 | ||
1369 | static void | |
1370 | decode_next_window_args (window, minibuf, all_frames) | |
1371 | Lisp_Object *window, *minibuf, *all_frames; | |
1372 | { | |
1373 | if (NILP (*window)) | |
1374 | *window = selected_window; | |
1375 | else | |
1376 | CHECK_LIVE_WINDOW (*window, 0); | |
1377 | ||
1378 | /* MINIBUF nil may or may not include minibuffers. Decide if it | |
1379 | does. */ | |
1380 | if (NILP (*minibuf)) | |
1381 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1382 | else if (!EQ (*minibuf, Qt)) | |
1383 | *minibuf = Qlambda; | |
1384 | ||
1385 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' | |
1386 | => count none of them, or a specific minibuffer window (the | |
1387 | active one) to count. */ | |
1388 | ||
1389 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1390 | if (NILP (*all_frames)) | |
1391 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1392 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1393 | : Qnil); | |
1394 | else if (EQ (*all_frames, Qvisible)) | |
1395 | ; | |
1396 | else if (XFASTINT (*all_frames) == 0) | |
1397 | ; | |
1398 | else if (FRAMEP (*all_frames)) | |
1399 | ; | |
1400 | else if (!EQ (*all_frames, Qt)) | |
1401 | *all_frames = Qnil; | |
1402 | ||
1403 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning | |
1404 | search just current frame, `visible' meaning search just visible | |
1405 | frames, 0 meaning search visible and iconified frames, or a | |
1406 | window, meaning search the frame that window belongs to, or a | |
1407 | frame, meaning consider windows on that frame, only. */ | |
1408 | } | |
1409 | ||
1410 | ||
1411 | /* Return the next or previous window of WINDOW in canonical ordering | |
1412 | of windows. NEXT_P non-zero means return the next window. See the | |
1413 | documentation string of next-window for the meaning of MINIBUF and | |
1414 | ALL_FRAMES. */ | |
1415 | ||
1416 | static Lisp_Object | |
1417 | next_window (window, minibuf, all_frames, next_p) | |
1418 | Lisp_Object window, minibuf, all_frames; | |
1419 | int next_p; | |
1420 | { | |
1421 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1422 | ||
1423 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just | |
1424 | return the first window on the frame. */ | |
1425 | if (FRAMEP (all_frames) | |
1426 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1427 | return Fframe_first_window (all_frames); | |
1428 | ||
212116d6 | 1429 | if (next_p) |
67492200 GM |
1430 | { |
1431 | Lisp_Object list; | |
1432 | ||
1433 | /* Find WINDOW in the list of all windows. */ | |
1434 | list = Fmemq (window, window_list ()); | |
1435 | ||
1436 | /* Scan forward from WINDOW to the end of the window list. */ | |
1437 | if (CONSP (list)) | |
1438 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1439 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1440 | break; |
1441 | ||
1442 | /* Scan from the start of the window list up to WINDOW. */ | |
1443 | if (!CONSP (list)) | |
1444 | for (list = Vwindow_list; | |
1445 | CONSP (list) && !EQ (XCAR (list), window); | |
1446 | list = XCDR (list)) | |
118ea242 | 1447 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1448 | break; |
1449 | ||
1450 | if (CONSP (list)) | |
1451 | window = XCAR (list); | |
1452 | } | |
1453 | else | |
1454 | { | |
1455 | Lisp_Object candidate, list; | |
1456 | ||
1457 | /* Scan through the list of windows for candidates. If there are | |
1458 | candidate windows in front of WINDOW, the last one of these | |
1459 | is the one we want. If there are candidates following WINDOW | |
1460 | in the list, again the last one of these is the one we want. */ | |
1461 | candidate = Qnil; | |
1462 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1463 | { | |
1464 | if (EQ (XCAR (list), window)) | |
1465 | { | |
1466 | if (WINDOWP (candidate)) | |
1467 | break; | |
1468 | } | |
118ea242 GM |
1469 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1470 | all_frames)) | |
67492200 GM |
1471 | candidate = XCAR (list); |
1472 | } | |
1473 | ||
1474 | if (WINDOWP (candidate)) | |
1475 | window = candidate; | |
1476 | } | |
1477 | ||
1478 | return window; | |
1479 | } | |
7ab12479 | 1480 | |
7ab12479 | 1481 | |
26f6279d JB |
1482 | /* This comment supplies the doc string for `next-window', |
1483 | for make-docfile to see. We cannot put this in the real DEFUN | |
1484 | due to limits in the Unix cpp. | |
1485 | ||
1486 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 1487 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1488 | If omitted, WINDOW defaults to the selected window.\n\ |
1489 | \n\ | |
1490 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1491 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1492 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1493 | minibuffer even if it is active.\n\ | |
1494 | \n\ | |
44fa5b1e JB |
1495 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1496 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1497 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
1498 | set of windows even when the minibuffer is on another frame. If the\n\ |
1499 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 1500 | \n\ |
44fa5b1e JB |
1501 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1502 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1503 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1504 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1505 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1506 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1507 | \n\ |
1508 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1509 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
1510 | windows, eventually ending up back at the window you started with.\n\ | |
1511 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1512 | (window, minibuf, all_frames) */ |
1513 | ||
1514 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
1515 | 0) | |
44fa5b1e | 1516 | (window, minibuf, all_frames) |
67492200 | 1517 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1518 | { |
67492200 | 1519 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1520 | } |
1521 | ||
67492200 | 1522 | |
26f6279d JB |
1523 | /* This comment supplies the doc string for `previous-window', |
1524 | for make-docfile to see. We cannot put this in the real DEFUN | |
1525 | due to limits in the Unix cpp. | |
1526 | ||
1527 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1528 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1529 | If omitted, WINDOW defaults to the selected window.\n\ |
1530 | \n\ | |
1531 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1532 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1533 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1534 | minibuffer even if it is active.\n\ | |
1535 | \n\ | |
44fa5b1e JB |
1536 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1537 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1538 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1539 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1540 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1541 | \n\ |
44fa5b1e JB |
1542 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1543 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1544 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1545 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1546 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1547 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1548 | \n\ |
1549 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1550 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1551 | windows, eventually ending up back at the window you started with.\n\ | |
1552 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1553 | (window, minibuf, all_frames) */ |
1554 | ||
1555 | ||
1556 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1557 | 0) | |
44fa5b1e | 1558 | (window, minibuf, all_frames) |
67492200 | 1559 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1560 | { |
67492200 | 1561 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1562 | } |
1563 | ||
67492200 | 1564 | |
62c07cc7 | 1565 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1566 | "Select the ARG'th different window on this frame.\n\ |
1567 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1568 | This command selects the window ARG steps away in that order.\n\ |
1569 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1570 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 | 1571 | (arg, all_frames) |
67492200 | 1572 | Lisp_Object arg, all_frames; |
7ab12479 | 1573 | { |
67492200 GM |
1574 | Lisp_Object window; |
1575 | int i; | |
7ab12479 | 1576 | |
413430c5 | 1577 | CHECK_NUMBER (arg, 0); |
67492200 GM |
1578 | window = selected_window; |
1579 | ||
1580 | for (i = XINT (arg); i > 0; --i) | |
1581 | window = Fnext_window (window, Qnil, all_frames); | |
1582 | for (; i < 0; ++i) | |
1583 | window = Fprevious_window (window, Qnil, all_frames); | |
1584 | ||
1585 | Fselect_window (window); | |
7ab12479 JB |
1586 | return Qnil; |
1587 | } | |
67492200 GM |
1588 | |
1589 | ||
1590 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
118ea242 | 1591 | "Return a list of windows in canonical ordering.\n\ |
67492200 GM |
1592 | Arguments are like for `next-window'.") |
1593 | (window, minibuf, all_frames) | |
069f5950 | 1594 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1595 | { |
1596 | Lisp_Object tail, list; | |
1597 | ||
1598 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1599 | list = Qnil; | |
1600 | ||
1601 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
118ea242 | 1602 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 GM |
1603 | list = Fcons (XCAR (tail), list); |
1604 | ||
118ea242 | 1605 | return Fnreverse (list); |
67492200 GM |
1606 | } |
1607 | ||
1608 | ||
7ab12479 JB |
1609 | \f |
1610 | /* Look at all windows, performing an operation specified by TYPE | |
1611 | with argument OBJ. | |
75d8f668 | 1612 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1613 | Qnil, look at just the selected frame; |
89bca612 | 1614 | Qvisible, look at visible frames; |
75d8f668 | 1615 | a frame, just look at windows on that frame. |
7ab12479 JB |
1616 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1617 | */ | |
1618 | ||
1619 | enum window_loop | |
1620 | { | |
1621 | WINDOW_LOOP_UNUSED, | |
1622 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1623 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1624 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1625 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1626 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1627 | UNSHOW_BUFFER, /* Arg is buffer */ |
1628 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1629 | }; |
1630 | ||
1631 | static Lisp_Object | |
44fa5b1e | 1632 | window_loop (type, obj, mini, frames) |
7ab12479 | 1633 | enum window_loop type; |
118ea242 | 1634 | Lisp_Object obj, frames; |
7ab12479 JB |
1635 | int mini; |
1636 | { | |
118ea242 GM |
1637 | Lisp_Object window, windows, best_window, frame_arg; |
1638 | struct frame *f; | |
ffdc852d | 1639 | struct gcpro gcpro1; |
118ea242 | 1640 | |
44fa5b1e JB |
1641 | /* If we're only looping through windows on a particular frame, |
1642 | frame points to that frame. If we're looping through windows | |
1643 | on all frames, frame is 0. */ | |
1644 | if (FRAMEP (frames)) | |
118ea242 | 1645 | f = XFRAME (frames); |
44fa5b1e | 1646 | else if (NILP (frames)) |
118ea242 | 1647 | f = SELECTED_FRAME (); |
7ab12479 | 1648 | else |
118ea242 GM |
1649 | f = NULL; |
1650 | ||
1651 | if (f) | |
89bca612 | 1652 | frame_arg = Qlambda; |
f812f9c6 RS |
1653 | else if (XFASTINT (frames) == 0) |
1654 | frame_arg = frames; | |
89bca612 RS |
1655 | else if (EQ (frames, Qvisible)) |
1656 | frame_arg = frames; | |
118ea242 GM |
1657 | else |
1658 | frame_arg = Qt; | |
7ab12479 | 1659 | |
89bca612 RS |
1660 | /* frame_arg is Qlambda to stick to one frame, |
1661 | Qvisible to consider all visible frames, | |
1662 | or Qt otherwise. */ | |
1663 | ||
7ab12479 | 1664 | /* Pick a window to start with. */ |
017b2bad | 1665 | if (WINDOWP (obj)) |
118ea242 GM |
1666 | window = obj; |
1667 | else if (f) | |
1668 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1669 | else |
118ea242 | 1670 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 JB |
1671 | |
1672 | /* Figure out the last window we're going to mess with. Since | |
1673 | Fnext_window, given the same options, is guaranteed to go in a | |
1674 | ring, we can just use Fprevious_window to find the last one. | |
1675 | ||
1676 | We can't just wait until we hit the first window again, because | |
1677 | it might be deleted. */ | |
1678 | ||
118ea242 GM |
1679 | windows = Fwindow_list (window, mini ? Qt : Qnil, frame_arg); |
1680 | GCPRO1 (windows); | |
7ab12479 | 1681 | best_window = Qnil; |
118ea242 GM |
1682 | |
1683 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1684 | { |
118ea242 GM |
1685 | struct window *w; |
1686 | ||
1687 | window = XCAR (windows); | |
1688 | w = XWINDOW (window); | |
1689 | ||
1690 | /* Note that we do not pay attention here to whether the frame | |
1691 | is visible, since Fwindow_list skips non-visible frames if | |
1692 | that is desired, under the control of frame_arg. */ | |
1693 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1694 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1695 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1696 | || (mini && minibuf_level > 0)) |
1697 | switch (type) | |
1698 | { | |
1699 | case GET_BUFFER_WINDOW: | |
118ea242 | 1700 | if (EQ (w->buffer, obj) |
5c204627 RS |
1701 | /* Don't find any minibuffer window |
1702 | except the one that is currently in use. */ | |
118ea242 GM |
1703 | && (MINI_WINDOW_P (w) |
1704 | ? EQ (window, minibuf_window) | |
1705 | : 1)) | |
1706 | { | |
1707 | UNGCPRO; | |
1708 | return window; | |
1709 | } | |
7ab12479 JB |
1710 | break; |
1711 | ||
1712 | case GET_LRU_WINDOW: | |
1713 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1714 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1715 | break; |
7ab12479 | 1716 | /* Ignore dedicated windows and minibuffers. */ |
118ea242 | 1717 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
7ab12479 | 1718 | break; |
265a9e55 | 1719 | if (NILP (best_window) |
7ab12479 | 1720 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1721 | > XFASTINT (w->use_time))) |
1722 | best_window = window; | |
7ab12479 JB |
1723 | break; |
1724 | ||
1725 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1726 | if (!EQ (window, obj)) |
1727 | Fdelete_window (window); | |
7ab12479 JB |
1728 | break; |
1729 | ||
1730 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1731 | if (EQ (w->buffer, obj)) |
7ab12479 | 1732 | { |
118ea242 | 1733 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1734 | |
1735 | /* If this window is dedicated, and in a frame of its own, | |
1736 | kill the frame. */ | |
118ea242 GM |
1737 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1738 | && !NILP (w->dedicated) | |
3548e138 | 1739 | && other_visible_frames (f)) |
7ab12479 | 1740 | { |
3548e138 RS |
1741 | /* Skip the other windows on this frame. |
1742 | There might be one, the minibuffer! */ | |
118ea242 GM |
1743 | while (CONSP (XCDR (windows)) |
1744 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1745 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1746 | windows = XCDR (windows); | |
1747 | ||
3548e138 | 1748 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1749 | Fdelete_frame (w->frame, Qnil); |
1750 | } | |
1751 | else if (NILP (w->parent)) | |
1752 | { | |
1753 | /* If we're deleting the buffer displayed in the | |
1754 | only window on the frame, find a new buffer to | |
1755 | display there. */ | |
1756 | Lisp_Object buffer; | |
1757 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1758 | if (NILP (buffer)) | |
1759 | buffer = Fget_buffer_create (build_string ("*scratch*")); | |
1760 | Fset_window_buffer (window, buffer); | |
1761 | if (EQ (window, selected_window)) | |
1762 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1763 | } |
1764 | else | |
118ea242 | 1765 | Fdelete_window (window); |
7ab12479 JB |
1766 | } |
1767 | break; | |
1768 | ||
1769 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1770 | { |
118ea242 | 1771 | /* Ignore dedicated windows and minibuffers. */ |
c930dfab | 1772 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
118ea242 GM |
1773 | break; |
1774 | ||
c930dfab | 1775 | if (NILP (best_window)) |
118ea242 | 1776 | best_window = window; |
c930dfab GM |
1777 | else |
1778 | { | |
1779 | struct window *b = XWINDOW (best_window); | |
1780 | if (XFASTINT (w->height) * XFASTINT (w->width) | |
1781 | > XFASTINT (b->height) * XFASTINT (b->width)) | |
1782 | best_window = window; | |
1783 | } | |
7ab12479 JB |
1784 | } |
1785 | break; | |
1786 | ||
1787 | case UNSHOW_BUFFER: | |
118ea242 | 1788 | if (EQ (w->buffer, obj)) |
7ab12479 | 1789 | { |
118ea242 GM |
1790 | Lisp_Object buffer; |
1791 | struct frame *f = XFRAME (w->frame); | |
1792 | ||
7ab12479 | 1793 | /* Find another buffer to show in this window. */ |
118ea242 GM |
1794 | buffer = Fother_buffer (obj, Qnil, w->frame); |
1795 | if (NILP (buffer)) | |
1796 | buffer = Fget_buffer_create (build_string ("*scratch*")); | |
1797 | ||
38ab08d1 RS |
1798 | /* If this window is dedicated, and in a frame of its own, |
1799 | kill the frame. */ | |
118ea242 GM |
1800 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1801 | && !NILP (w->dedicated) | |
38ab08d1 | 1802 | && other_visible_frames (f)) |
45945a7b RS |
1803 | { |
1804 | /* Skip the other windows on this frame. | |
1805 | There might be one, the minibuffer! */ | |
118ea242 GM |
1806 | while (CONSP (XCDR (windows)) |
1807 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1808 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1809 | windows = XCDR (windows); | |
1810 | ||
45945a7b | 1811 | /* Now we can safely delete the frame. */ |
118ea242 | 1812 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1813 | } |
38ab08d1 | 1814 | else |
38ab08d1 RS |
1815 | { |
1816 | /* Otherwise show a different buffer in the window. */ | |
118ea242 GM |
1817 | w->dedicated = Qnil; |
1818 | Fset_window_buffer (window, buffer); | |
1819 | if (EQ (window, selected_window)) | |
1820 | Fset_buffer (w->buffer); | |
38ab08d1 | 1821 | } |
7ab12479 JB |
1822 | } |
1823 | break; | |
3f8ab7bd RS |
1824 | |
1825 | /* Check for a window that has a killed buffer. */ | |
1826 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1827 | if (! NILP (w->buffer) |
1828 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1829 | abort (); |
118ea242 | 1830 | break; |
6bbd7a29 GM |
1831 | |
1832 | case WINDOW_LOOP_UNUSED: | |
1833 | break; | |
7ab12479 | 1834 | } |
7ab12479 | 1835 | } |
7ab12479 | 1836 | |
118ea242 | 1837 | UNGCPRO; |
7ab12479 | 1838 | return best_window; |
37962e60 | 1839 | } |
605be8af | 1840 | |
3f8ab7bd RS |
1841 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1842 | ||
233a4a2c | 1843 | void |
3f8ab7bd RS |
1844 | check_all_windows () |
1845 | { | |
1846 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1847 | } | |
1848 | ||
7ab12479 JB |
1849 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1850 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1851 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1852 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1853 | If FRAME is t, search all frames.\n\ |
1854 | If FRAME is nil, search only the selected frame.\n\ | |
1855 | If FRAME is a frame, search only that frame.") | |
1856 | (frame) | |
1857 | Lisp_Object frame; | |
7ab12479 JB |
1858 | { |
1859 | register Lisp_Object w; | |
1860 | /* First try for a window that is full-width */ | |
89bca612 | 1861 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1862 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1863 | return w; |
1864 | /* If none of them, try the rest */ | |
89bca612 | 1865 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1866 | } |
1867 | ||
1868 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1869 | "Return the largest window in area.\n\ | |
89bca612 | 1870 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1871 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1872 | If FRAME is t, search all frames.\n\ |
1873 | If FRAME is nil, search only the selected frame.\n\ | |
1874 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1875 | (frame) |
1876 | Lisp_Object frame; | |
7ab12479 JB |
1877 | { |
1878 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1879 | frame); |
7ab12479 JB |
1880 | } |
1881 | ||
1882 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1883 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1884 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1885 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1886 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1887 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1888 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1889 | (buffer, frame) |
1890 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1891 | { |
1892 | buffer = Fget_buffer (buffer); | |
017b2bad | 1893 | if (BUFFERP (buffer)) |
44fa5b1e | 1894 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1895 | else |
1896 | return Qnil; | |
1897 | } | |
1898 | ||
1899 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1900 | 0, 1, "", | |
44fa5b1e | 1901 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1902 | Only the frame WINDOW is on is affected.\n\ |
1903 | This function tries to reduce display jumps\n\ | |
1904 | by keeping the text previously visible in WINDOW\n\ | |
1905 | in the same place on the frame. Doing this depends on\n\ | |
1906 | the value of (window-start WINDOW), so if calling this function\n\ | |
1907 | in a program gives strange scrolling, make sure the window-start\n\ | |
1908 | value is reasonable when this function is called.") | |
7ab12479 JB |
1909 | (window) |
1910 | Lisp_Object window; | |
1911 | { | |
1912 | struct window *w; | |
00d3d838 | 1913 | int startpos; |
7ab12479 JB |
1914 | int top; |
1915 | ||
265a9e55 | 1916 | if (NILP (window)) |
7ab12479 JB |
1917 | window = selected_window; |
1918 | else | |
605be8af | 1919 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1920 | |
1921 | w = XWINDOW (window); | |
a2b38b3c | 1922 | |
00d3d838 | 1923 | startpos = marker_position (w->start); |
5500c422 | 1924 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 1925 | |
a2b38b3c RS |
1926 | if (MINI_WINDOW_P (w) && top > 0) |
1927 | error ("Can't expand minibuffer to full frame"); | |
1928 | ||
70728a80 | 1929 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1930 | |
00d3d838 KH |
1931 | /* Try to minimize scrolling, by setting the window start to the point |
1932 | will cause the text at the old window start to be at the same place | |
1933 | on the frame. But don't try to do this if the window start is | |
1934 | outside the visible portion (as might happen when the display is | |
1935 | not current, due to typeahead). */ | |
1936 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1937 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1938 | { | |
1939 | struct position pos; | |
1940 | struct buffer *obuf = current_buffer; | |
1941 | ||
1942 | Fset_buffer (w->buffer); | |
1943 | /* This computation used to temporarily move point, but that can | |
1944 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1945 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 1946 | |
b73ea88e RS |
1947 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
1948 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
1949 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 1950 | : Qnil); |
80622eec RS |
1951 | /* We need to do this, so that the window-scroll-functions |
1952 | get called. */ | |
4d047f50 | 1953 | w->optional_new_start = Qt; |
00d3d838 KH |
1954 | |
1955 | set_buffer_internal (obuf); | |
1956 | } | |
5500c422 | 1957 | |
7ab12479 JB |
1958 | return Qnil; |
1959 | } | |
1960 | ||
1961 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1962 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1963 | "Delete all windows showing BUFFER.\n\ |
1964 | Optional second argument FRAME controls which frames are affected.\n\ | |
c520265e RS |
1965 | If optional argument FRAME is `visible', search all visible frames.\n\ |
1966 | If FRAME is 0, search all visible and iconified frames.\n\ | |
1967 | If FRAME is nil, search all frames.\n\ | |
1968 | If FRAME is t, search only the selected frame.\n\ | |
1969 | If FRAME is a frame, search only that frame.") | |
26f6279d JB |
1970 | (buffer, frame) |
1971 | Lisp_Object buffer, frame; | |
7ab12479 | 1972 | { |
26f6279d JB |
1973 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1974 | expects. */ | |
c520265e RS |
1975 | if (NILP (frame)) |
1976 | frame = Qt; | |
1977 | else if (EQ (frame, Qt)) | |
1978 | frame = Qnil; | |
26f6279d | 1979 | |
265a9e55 | 1980 | if (!NILP (buffer)) |
7ab12479 JB |
1981 | { |
1982 | buffer = Fget_buffer (buffer); | |
1983 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1984 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 1985 | } |
5500c422 | 1986 | |
7ab12479 JB |
1987 | return Qnil; |
1988 | } | |
1989 | ||
1990 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1991 | Sreplace_buffer_in_windows, | |
1992 | 1, 1, "bReplace buffer in windows: ", | |
1993 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1994 | (buffer) | |
1995 | Lisp_Object buffer; | |
1996 | { | |
265a9e55 | 1997 | if (!NILP (buffer)) |
7ab12479 JB |
1998 | { |
1999 | buffer = Fget_buffer (buffer); | |
2000 | CHECK_BUFFER (buffer, 0); | |
2001 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2002 | } | |
2003 | return Qnil; | |
2004 | } | |
ff58478b RS |
2005 | |
2006 | /* Replace BUFFER with some other buffer in all windows | |
2007 | of all frames, even those on other keyboards. */ | |
2008 | ||
2009 | void | |
2010 | replace_buffer_in_all_windows (buffer) | |
2011 | Lisp_Object buffer; | |
2012 | { | |
27abb84f | 2013 | #ifdef MULTI_KBOARD |
ff58478b RS |
2014 | Lisp_Object tail, frame; |
2015 | ||
ff58478b RS |
2016 | /* A single call to window_loop won't do the job |
2017 | because it only considers frames on the current keyboard. | |
2018 | So loop manually over frames, and handle each one. */ | |
2019 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2020 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2021 | #else |
db7f721d | 2022 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2023 | #endif |
2024 | } | |
7ab12479 JB |
2025 | \f |
2026 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2027 | |
2028 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2029 | might crash Emacs. */ | |
5500c422 | 2030 | |
a481b3ea JB |
2031 | #define MIN_SAFE_WINDOW_WIDTH (2) |
2032 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
2033 | ||
2034 | /* Make sure that window_min_height and window_min_width are | |
2035 | not too small; if they are, set them to safe minima. */ | |
2036 | ||
2037 | static void | |
2038 | check_min_window_sizes () | |
2039 | { | |
2040 | /* Smaller values might permit a crash. */ | |
2041 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2042 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2043 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2044 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2045 | } | |
2046 | ||
2047 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2048 | minimum allowable size. */ | |
5500c422 | 2049 | |
605be8af | 2050 | void |
a481b3ea | 2051 | check_frame_size (frame, rows, cols) |
605be8af JB |
2052 | FRAME_PTR frame; |
2053 | int *rows, *cols; | |
a481b3ea | 2054 | { |
628df3bf | 2055 | /* For height, we have to see: |
37962e60 | 2056 | whether the frame has a minibuffer, |
628df3bf JB |
2057 | whether it wants a mode line, and |
2058 | whether it has a menu bar. */ | |
a481b3ea | 2059 | int min_height = |
79f92720 JB |
2060 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
2061 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 2062 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
2063 | |
2064 | if (FRAME_TOP_MARGIN (frame) > 0) | |
2065 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2066 | |
2067 | if (*rows < min_height) | |
2068 | *rows = min_height; | |
2069 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2070 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2071 | } | |
2072 | ||
c1636aa6 | 2073 | |
233a4a2c GM |
2074 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2075 | check if W's width can be changed, otherwise check W's height. | |
2076 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2077 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2078 | either. */ | |
c1636aa6 | 2079 | |
233a4a2c GM |
2080 | static int |
2081 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2082 | struct window *w; | |
2083 | int width_p, check_siblings_p; | |
2084 | { | |
2085 | int fixed_p; | |
2086 | struct window *c; | |
2087 | ||
2088 | if (!NILP (w->hchild)) | |
2089 | { | |
2090 | c = XWINDOW (w->hchild); | |
2091 | ||
2092 | if (width_p) | |
2093 | { | |
2094 | /* A horiz. combination is fixed-width if all of if its | |
2095 | children are. */ | |
2096 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2097 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2098 | fixed_p = c == NULL; | |
2099 | } | |
2100 | else | |
2101 | { | |
2102 | /* A horiz. combination is fixed-height if one of if its | |
2103 | children is. */ | |
2104 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2105 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2106 | fixed_p = c != NULL; | |
2107 | } | |
2108 | } | |
2109 | else if (!NILP (w->vchild)) | |
2110 | { | |
2111 | c = XWINDOW (w->vchild); | |
2112 | ||
2113 | if (width_p) | |
2114 | { | |
2115 | /* A vert. combination is fixed-width if one of if its | |
2116 | children is. */ | |
2117 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2118 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2119 | fixed_p = c != NULL; | |
2120 | } | |
2121 | else | |
2122 | { | |
2123 | /* A vert. combination is fixed-height if all of if its | |
2124 | children are. */ | |
2125 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2126 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2127 | fixed_p = c == NULL; | |
2128 | } | |
2129 | } | |
2130 | else if (BUFFERP (w->buffer)) | |
2131 | { | |
a34dfd12 GM |
2132 | if (w->height_fixed_p && !width_p) |
2133 | fixed_p = 1; | |
2134 | else | |
233a4a2c | 2135 | { |
a34dfd12 GM |
2136 | struct buffer *old = current_buffer; |
2137 | Lisp_Object val; | |
2138 | ||
2139 | current_buffer = XBUFFER (w->buffer); | |
2140 | val = find_symbol_value (Qwindow_size_fixed); | |
2141 | current_buffer = old; | |
2142 | ||
2143 | fixed_p = 0; | |
2144 | if (!EQ (val, Qunbound)) | |
2145 | { | |
2146 | fixed_p = !NILP (val); | |
2147 | ||
2148 | if (fixed_p | |
2149 | && ((EQ (val, Qheight) && width_p) | |
2150 | || (EQ (val, Qwidth) && !width_p))) | |
2151 | fixed_p = 0; | |
2152 | } | |
233a4a2c GM |
2153 | } |
2154 | ||
2155 | /* Can't tell if this one is resizable without looking at | |
2156 | siblings. If all siblings are fixed-size this one is too. */ | |
2157 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2158 | { | |
2159 | Lisp_Object child; | |
2160 | ||
2161 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2162 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2163 | break; | |
2164 | ||
2165 | if (NILP (child)) | |
2166 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2167 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2168 | break; | |
2169 | ||
2170 | if (NILP (child)) | |
2171 | fixed_p = 1; | |
2172 | } | |
2173 | } | |
2174 | else | |
2175 | fixed_p = 1; | |
2176 | ||
2177 | return fixed_p; | |
2178 | } | |
2179 | ||
2180 | ||
2181 | /* Return the minimum size of window W, not taking fixed-width windows | |
2182 | into account. WIDTH_P non-zero means return the minimum width, | |
2183 | otherwise return the minimum height. If W is a combination window, | |
2184 | compute the minimum size from the minimum sizes of W's children. */ | |
2185 | ||
2186 | static int | |
2187 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2188 | struct window *w; |
2189 | int width_p; | |
2190 | { | |
233a4a2c | 2191 | struct window *c; |
c1636aa6 GM |
2192 | int size; |
2193 | ||
233a4a2c GM |
2194 | if (!NILP (w->hchild)) |
2195 | { | |
2196 | c = XWINDOW (w->hchild); | |
2197 | size = 0; | |
2198 | ||
2199 | if (width_p) | |
2200 | { | |
2201 | /* The min width of a horizontal combination is | |
2202 | the sum of the min widths of its children. */ | |
2203 | while (c) | |
2204 | { | |
2205 | size += window_min_size_1 (c, width_p); | |
2206 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2207 | } | |
2208 | } | |
2209 | else | |
2210 | { | |
2211 | /* The min height a horizontal combination equals | |
2212 | the maximum of all min height of its children. */ | |
2213 | while (c) | |
2214 | { | |
2215 | int min_size = window_min_size_1 (c, width_p); | |
2216 | size = max (min_size, size); | |
2217 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2218 | } | |
2219 | } | |
2220 | } | |
2221 | else if (!NILP (w->vchild)) | |
2222 | { | |
2223 | c = XWINDOW (w->vchild); | |
2224 | size = 0; | |
2225 | ||
2226 | if (width_p) | |
2227 | { | |
2228 | /* The min width of a vertical combination is | |
2229 | the maximum of the min widths of its children. */ | |
2230 | while (c) | |
2231 | { | |
2232 | int min_size = window_min_size_1 (c, width_p); | |
2233 | size = max (min_size, size); | |
2234 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2235 | } | |
2236 | } | |
2237 | else | |
2238 | { | |
2239 | /* The min height of a vertical combination equals | |
2240 | the sum of the min height of its children. */ | |
2241 | while (c) | |
2242 | { | |
2243 | size += window_min_size_1 (c, width_p); | |
2244 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2245 | } | |
2246 | } | |
2247 | } | |
c1636aa6 GM |
2248 | else |
2249 | { | |
233a4a2c GM |
2250 | if (width_p) |
2251 | size = window_min_width; | |
c1636aa6 | 2252 | else |
233a4a2c GM |
2253 | { |
2254 | if (MINI_WINDOW_P (w) | |
2255 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2256 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2257 | size = 1; |
2258 | else | |
2259 | size = window_min_height; | |
2260 | } | |
c1636aa6 GM |
2261 | } |
2262 | ||
2263 | return size; | |
2264 | } | |
2265 | ||
2266 | ||
233a4a2c GM |
2267 | /* Return the minimum size of window W, taking fixed-size windows into |
2268 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2269 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2270 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2271 | unless FIXED is null. */ | |
7ab12479 | 2272 | |
233a4a2c | 2273 | static int |
f984d4fc | 2274 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2275 | struct window *w; |
f984d4fc | 2276 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2277 | { |
2278 | int size, fixed_p; | |
2279 | ||
f984d4fc GM |
2280 | if (ignore_fixed_p) |
2281 | fixed_p = 0; | |
2282 | else | |
2283 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2284 | ||
233a4a2c GM |
2285 | if (fixed) |
2286 | *fixed = fixed_p; | |
2287 | ||
2288 | if (fixed_p) | |
2289 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2290 | else | |
2291 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2292 | |
233a4a2c GM |
2293 | return size; |
2294 | } | |
2295 | ||
2296 | ||
2297 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2298 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2299 | keep their proportionate size relative to WINDOW. Propagate | |
2300 | WINDOW's top or left edge position to children. Delete windows | |
2301 | that become too small unless NODELETE_P is non-zero. */ | |
2302 | ||
2303 | static void | |
2304 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2305 | Lisp_Object window; |
233a4a2c | 2306 | int size, width_p, nodelete_p; |
7ab12479 | 2307 | { |
233a4a2c GM |
2308 | struct window *w = XWINDOW (window); |
2309 | struct window *c; | |
2310 | Lisp_Object child, *forward, *sideward; | |
2311 | int old_size, min_size; | |
7ab12479 | 2312 | |
a481b3ea | 2313 | check_min_window_sizes (); |
233a4a2c | 2314 | |
b5f05b50 GM |
2315 | /* If the window has been "too small" at one point, |
2316 | don't delete it for being "too small" in the future. | |
2317 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2318 | if (width_p) |
2319 | { | |
2320 | old_size = XFASTINT (w->width); | |
2321 | min_size = window_min_width; | |
2322 | } | |
2323 | else | |
2324 | { | |
2325 | old_size = XFASTINT (w->height); | |
2326 | min_size = window_min_height; | |
2327 | } | |
2328 | ||
2329 | if (old_size < window_min_width) | |
b5f05b50 GM |
2330 | w->too_small_ok = Qt; |
2331 | ||
233a4a2c GM |
2332 | /* Maybe delete WINDOW if it's too small. */ |
2333 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2334 | { |
233a4a2c | 2335 | int min_size; |
b5f05b50 GM |
2336 | |
2337 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) | |
233a4a2c | 2338 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2339 | else |
233a4a2c | 2340 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2341 | |
233a4a2c | 2342 | if (size < min_size) |
c1636aa6 GM |
2343 | { |
2344 | delete_window (window); | |
2345 | return; | |
2346 | } | |
7ab12479 JB |
2347 | } |
2348 | ||
233a4a2c | 2349 | /* Set redisplay hints. */ |
d834a2e9 | 2350 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2351 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2352 | windows_or_buffers_changed++; |
29aeee73 RS |
2353 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
2354 | ||
233a4a2c GM |
2355 | if (width_p) |
2356 | { | |
2357 | sideward = &w->vchild; | |
2358 | forward = &w->hchild; | |
2359 | XSETFASTINT (w->width, size); | |
2360 | } | |
2361 | else | |
2362 | { | |
2363 | sideward = &w->hchild; | |
2364 | forward = &w->vchild; | |
2365 | XSETFASTINT (w->height, size); | |
2366 | } | |
2367 | ||
2368 | if (!NILP (*sideward)) | |
7ab12479 | 2369 | { |
233a4a2c | 2370 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2371 | { |
233a4a2c GM |
2372 | c = XWINDOW (child); |
2373 | if (width_p) | |
2374 | c->left = w->left; | |
2375 | else | |
2376 | c->top = w->top; | |
2377 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2378 | } |
2379 | } | |
233a4a2c | 2380 | else if (!NILP (*forward)) |
7ab12479 | 2381 | { |
233a4a2c GM |
2382 | int fixed_size, each, extra, n; |
2383 | int resize_fixed_p, nfixed; | |
2384 | int last_pos, first_pos, nchildren; | |
2385 | ||
2386 | /* Determine the fixed-size portion of the this window, and the | |
2387 | number of child windows. */ | |
2388 | fixed_size = nchildren = nfixed = 0; | |
2389 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) | |
7ab12479 JB |
2390 | { |
2391 | c = XWINDOW (child); | |
233a4a2c GM |
2392 | if (window_fixed_size_p (c, width_p, 0)) |
2393 | { | |
2394 | fixed_size += (width_p | |
2395 | ? XFASTINT (c->width) : XFASTINT (c->height)); | |
2396 | ++nfixed; | |
2397 | } | |
2398 | } | |
7ab12479 | 2399 | |
233a4a2c GM |
2400 | /* If the new size is smaller than fixed_size, or if there |
2401 | aren't any resizable windows, allow resizing fixed-size | |
2402 | windows. */ | |
2403 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2404 | ||
2405 | /* Compute how many lines/columns to add to each child. The | |
2406 | value of extra takes care of rounding errors. */ | |
2407 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
2408 | each = (size - old_size) / n; | |
2409 | extra = (size - old_size) - n * each; | |
2410 | ||
2411 | /* Compute new children heights and edge positions. */ | |
2412 | first_pos = width_p ? XFASTINT (w->left) : XFASTINT (w->top); | |
2413 | last_pos = first_pos; | |
2414 | for (child = *forward; !NILP (child); child = c->next) | |
2415 | { | |
2416 | int new_size, old_size; | |
2417 | ||
2418 | c = XWINDOW (child); | |
2419 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2420 | new_size = old_size; | |
7ab12479 | 2421 | |
233a4a2c GM |
2422 | /* The top or left edge position of this child equals the |
2423 | bottom or right edge of its predecessor. */ | |
2424 | if (width_p) | |
2425 | c->left = make_number (last_pos); | |
2426 | else | |
2427 | c->top = make_number (last_pos); | |
7ab12479 | 2428 | |
233a4a2c GM |
2429 | /* If this child can be resized, do it. */ |
2430 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2431 | { | |
2432 | new_size = old_size + each + extra; | |
2433 | extra = 0; | |
2434 | } | |
2435 | ||
2436 | /* Set new height. Note that size_window also propagates | |
2437 | edge positions to children, so it's not a no-op if we | |
2438 | didn't change the child's size. */ | |
2439 | size_window (child, new_size, width_p, 1); | |
2440 | ||
2441 | /* Remember the bottom/right edge position of this child; it | |
2442 | will be used to set the top/left edge of the next child. */ | |
2443 | last_pos += new_size; | |
7ab12479 | 2444 | } |
233a4a2c GM |
2445 | |
2446 | /* We should have covered the parent exactly with child windows. */ | |
2447 | xassert (size == last_pos - first_pos); | |
2448 | ||
7ab12479 | 2449 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2450 | if (!nodelete_p) |
2451 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2452 | { |
233a4a2c GM |
2453 | int child_size; |
2454 | c = XWINDOW (child); | |
2455 | child_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2456 | size_window (child, child_size, width_p, 0); | |
7ab12479 JB |
2457 | } |
2458 | } | |
2459 | } | |
2460 | ||
233a4a2c GM |
2461 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2462 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2463 | that become too small in the process. (The caller should check | |
2464 | later and do so if appropriate.) */ | |
7ab12479 | 2465 | |
5e14b1fc | 2466 | void |
233a4a2c | 2467 | set_window_height (window, height, nodelete) |
7ab12479 | 2468 | Lisp_Object window; |
233a4a2c | 2469 | int height; |
7ab12479 JB |
2470 | int nodelete; |
2471 | { | |
233a4a2c GM |
2472 | size_window (window, height, 0, nodelete); |
2473 | } | |
7ab12479 | 2474 | |
7ab12479 | 2475 | |
233a4a2c GM |
2476 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2477 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2478 | that become too small in the process. (The caller should check | |
2479 | later and do so if appropriate.) */ | |
7ab12479 | 2480 | |
233a4a2c GM |
2481 | void |
2482 | set_window_width (window, width, nodelete) | |
2483 | Lisp_Object window; | |
2484 | int width; | |
2485 | int nodelete; | |
2486 | { | |
2487 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2488 | } |
233a4a2c | 2489 | |
7ab12479 | 2490 | \f |
1d8d96fa | 2491 | int window_select_count; |
7ab12479 | 2492 | |
5b03d3c0 RS |
2493 | Lisp_Object |
2494 | Fset_window_buffer_unwind (obuf) | |
2495 | Lisp_Object obuf; | |
2496 | { | |
2497 | Fset_buffer (obuf); | |
2498 | return Qnil; | |
2499 | } | |
2500 | ||
7ab12479 | 2501 | |
5500c422 GM |
2502 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2503 | means it's allowed to run hooks. See make_frame for a case where | |
2504 | it's not allowed. */ | |
7ab12479 | 2505 | |
5500c422 GM |
2506 | void |
2507 | set_window_buffer (window, buffer, run_hooks_p) | |
2508 | Lisp_Object window, buffer; | |
2509 | int run_hooks_p; | |
2510 | { | |
2511 | struct window *w = XWINDOW (window); | |
2512 | struct buffer *b = XBUFFER (buffer); | |
2513 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2514 | |
2515 | w->buffer = buffer; | |
86e48436 RS |
2516 | |
2517 | if (EQ (window, selected_window)) | |
5500c422 | 2518 | b->last_selected_window = window; |
beb4e312 RS |
2519 | |
2520 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2521 | if (INTEGERP (b->display_count)) |
2522 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2523 | b->display_time = Fcurrent_time (); | |
86e48436 | 2524 | |
d834a2e9 | 2525 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2526 | XSETFASTINT (w->window_end_vpos, 0); |
2527 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2528 | w->window_end_valid = Qnil; |
dba06815 | 2529 | XSETFASTINT (w->hscroll, 0); |
5500c422 | 2530 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2531 | set_marker_restricted (w->start, |
5500c422 | 2532 | make_number (b->last_window_start), |
7ab12479 JB |
2533 | buffer); |
2534 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2535 | w->force_start = Qnil; |
d834a2e9 | 2536 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2537 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2538 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2539 | |
2540 | /* We must select BUFFER for running the window-scroll-functions. | |
2541 | If WINDOW is selected, switch permanently. | |
2542 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2543 | if (EQ (window, selected_window)) |
2544 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2545 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2546 | because that might itself be a local variable. */ | |
2547 | else if (window_initialized) | |
2548 | { | |
2549 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2550 | Fset_buffer (buffer); | |
2551 | } | |
2552 | ||
5500c422 | 2553 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2554 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2555 | |
5500c422 GM |
2556 | if (run_hooks_p) |
2557 | { | |
2558 | if (! NILP (Vwindow_scroll_functions)) | |
2559 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2560 | Fmarker_position (w->start)); | |
2561 | ||
2562 | if (! NILP (Vwindow_configuration_change_hook) | |
2563 | && ! NILP (Vrun_hooks)) | |
2564 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2565 | } | |
543f5fb1 | 2566 | |
5b03d3c0 | 2567 | unbind_to (count, Qnil); |
5500c422 | 2568 | } |
5b03d3c0 | 2569 | |
5500c422 GM |
2570 | |
2571 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
2572 | "Make WINDOW display BUFFER as its contents.\n\ | |
2573 | BUFFER can be a buffer or buffer name.") | |
2574 | (window, buffer) | |
2575 | register Lisp_Object window, buffer; | |
2576 | { | |
2577 | register Lisp_Object tem; | |
2578 | register struct window *w = decode_window (window); | |
5500c422 | 2579 | |
bed0c171 | 2580 | XSETWINDOW (window, w); |
5500c422 GM |
2581 | buffer = Fget_buffer (buffer); |
2582 | CHECK_BUFFER (buffer, 1); | |
2583 | ||
2584 | if (NILP (XBUFFER (buffer)->name)) | |
2585 | error ("Attempt to display deleted buffer"); | |
2586 | ||
2587 | tem = w->buffer; | |
2588 | if (NILP (tem)) | |
2589 | error ("Window is deleted"); | |
2590 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2591 | is first being set up. */ | |
2592 | { | |
2593 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2594 | error ("Window is dedicated to `%s'", | |
2595 | XSTRING (XBUFFER (tem)->name)->data); | |
2596 | ||
2597 | unshow_buffer (w); | |
2598 | } | |
2599 | ||
2600 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2601 | return Qnil; |
2602 | } | |
2603 | ||
2604 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
2605 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
beb4e312 RS |
2606 | If WINDOW is not already selected, also make WINDOW's buffer current.\n\ |
2607 | Note that the main editor command loop\n\ | |
2608 | selects the buffer of the selected window before each command.") | |
7ab12479 JB |
2609 | (window) |
2610 | register Lisp_Object window; | |
b7354ddf RS |
2611 | { |
2612 | return select_window_1 (window, 1); | |
2613 | } | |
2614 | \f | |
719eaeb1 GM |
2615 | /* Note that selected_window can be nil |
2616 | when this is called from Fset_window_configuration. */ | |
2617 | ||
b7354ddf RS |
2618 | static Lisp_Object |
2619 | select_window_1 (window, recordflag) | |
2620 | register Lisp_Object window; | |
2621 | int recordflag; | |
7ab12479 JB |
2622 | { |
2623 | register struct window *w; | |
719eaeb1 | 2624 | register struct window *ow; |
1ae1a37d | 2625 | struct frame *sf; |
7ab12479 | 2626 | |
605be8af | 2627 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2628 | |
2629 | w = XWINDOW (window); | |
2630 | ||
265a9e55 | 2631 | if (NILP (w->buffer)) |
7ab12479 JB |
2632 | error ("Trying to select deleted window or non-leaf window"); |
2633 | ||
d834a2e9 | 2634 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2635 | if (EQ (window, selected_window)) |
2636 | return window; | |
2637 | ||
719eaeb1 GM |
2638 | if (!NILP (selected_window)) |
2639 | { | |
2640 | ow = XWINDOW (selected_window); | |
2641 | if (! NILP (ow->buffer)) | |
2642 | set_marker_both (ow->pointm, ow->buffer, | |
2643 | BUF_PT (XBUFFER (ow->buffer)), | |
2644 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2645 | } | |
7ab12479 JB |
2646 | |
2647 | selected_window = window; | |
1ae1a37d GM |
2648 | sf = SELECTED_FRAME (); |
2649 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2650 | { |
44fa5b1e | 2651 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2652 | /* Use this rather than Fhandle_switch_frame |
2653 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2654 | move around in the state where a minibuffer in a separate | |
2655 | frame is active. */ | |
2656 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2657 | } |
2658 | else | |
1ae1a37d | 2659 | sf->selected_window = window; |
7ab12479 | 2660 | |
b7354ddf RS |
2661 | if (recordflag) |
2662 | record_buffer (w->buffer); | |
7ab12479 JB |
2663 | Fset_buffer (w->buffer); |
2664 | ||
86e48436 RS |
2665 | XBUFFER (w->buffer)->last_selected_window = window; |
2666 | ||
7ab12479 JB |
2667 | /* Go to the point recorded in the window. |
2668 | This is important when the buffer is in more | |
2669 | than one window. It also matters when | |
2670 | redisplay_window has altered point after scrolling, | |
2671 | because it makes the change only in the window. */ | |
2672 | { | |
2673 | register int new_point = marker_position (w->pointm); | |
2674 | if (new_point < BEGV) | |
2675 | SET_PT (BEGV); | |
a9c95e08 | 2676 | else if (new_point > ZV) |
7ab12479 JB |
2677 | SET_PT (ZV); |
2678 | else | |
2679 | SET_PT (new_point); | |
2680 | } | |
2681 | ||
2682 | windows_or_buffers_changed++; | |
2683 | return window; | |
2684 | } | |
b7354ddf | 2685 | \f |
441a127e RS |
2686 | /* Deiconify the frame containing the window WINDOW, |
2687 | unless it is the selected frame; | |
2688 | then return WINDOW. | |
2689 | ||
2690 | The reason for the exception for the selected frame | |
2691 | is that it seems better not to change the selected frames visibility | |
2692 | merely because of displaying a different buffer in it. | |
2693 | The deiconification is useful when a buffer gets shown in | |
2694 | another frame that you were not using lately. */ | |
d07f802a RS |
2695 | |
2696 | static Lisp_Object | |
2697 | display_buffer_1 (window) | |
2698 | Lisp_Object window; | |
2699 | { | |
1ae1a37d GM |
2700 | Lisp_Object frame = XWINDOW (window)->frame; |
2701 | FRAME_PTR f = XFRAME (frame); | |
2702 | ||
d07f802a | 2703 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2704 | |
2705 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2706 | { |
2707 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2708 | Fmake_frame_visible (frame); |
37962e60 | 2709 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2710 | Fraise_frame (frame); |
60117126 | 2711 | } |
1ae1a37d | 2712 | |
d07f802a RS |
2713 | return window; |
2714 | } | |
2715 | ||
4628f7a4 | 2716 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2717 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2718 | The value is actually t if the frame should be called with default frame\n\ | |
2719 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2720 | See `special-display-buffer-names', and `special-display-regexps'.") |
2721 | (buffer_name) | |
2722 | Lisp_Object buffer_name; | |
2723 | { | |
2724 | Lisp_Object tem; | |
2725 | ||
2726 | CHECK_STRING (buffer_name, 1); | |
2727 | ||
2728 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2729 | if (!NILP (tem)) | |
2730 | return Qt; | |
2731 | ||
2732 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2733 | if (!NILP (tem)) | |
2734 | return XCDR (tem); | |
2735 | ||
2736 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2737 | { | |
2738 | Lisp_Object car = XCAR (tem); | |
2739 | if (STRINGP (car) | |
2740 | && fast_string_match (car, buffer_name) >= 0) | |
2741 | return Qt; | |
2742 | else if (CONSP (car) | |
2743 | && STRINGP (XCAR (car)) | |
2744 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2745 | return XCDR (car); |
4628f7a4 EN |
2746 | } |
2747 | return Qnil; | |
2748 | } | |
2749 | ||
2750 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2751 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2752 | See `same-window-buffer-names' and `same-window-regexps'.") |
2753 | (buffer_name) | |
2754 | Lisp_Object buffer_name; | |
2755 | { | |
2756 | Lisp_Object tem; | |
2757 | ||
2758 | CHECK_STRING (buffer_name, 1); | |
2759 | ||
2760 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2761 | if (!NILP (tem)) | |
2762 | return Qt; | |
2763 | ||
2764 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2765 | if (!NILP (tem)) | |
2766 | return Qt; | |
2767 | ||
2768 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2769 | { | |
2770 | Lisp_Object car = XCAR (tem); | |
2771 | if (STRINGP (car) | |
2772 | && fast_string_match (car, buffer_name) >= 0) | |
2773 | return Qt; | |
2774 | else if (CONSP (car) | |
2775 | && STRINGP (XCAR (car)) | |
2776 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2777 | return Qt; | |
2778 | } | |
2779 | return Qnil; | |
2780 | } | |
2781 | ||
53f76081 RS |
2782 | /* Use B so the default is (other-buffer). */ |
2783 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, | |
2784 | "BDisplay buffer: \nP", | |
7ab12479 JB |
2785 | "Make BUFFER appear in some window but don't select it.\n\ |
2786 | BUFFER can be a buffer or a buffer name.\n\ | |
2787 | If BUFFER is shown already in some window, just use that one,\n\ | |
2788 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2789 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2790 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 | 2791 | Returns the window displaying BUFFER.\n\ |
9c3da604 GM |
2792 | If `display-reuse-frames' is non-nil, and another frame is currently\n\ |
2793 | displaying BUFFER, then simply raise that frame.\n\ | |
5abcf432 RS |
2794 | \n\ |
2795 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2796 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
53f76081 RS |
2797 | buffer names are handled.\n\ |
2798 | \n\ | |
2799 | If optional argument FRAME is `visible', search all visible frames.\n\ | |
2800 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2801 | If FRAME is t, search all frames.\n\ | |
2802 | If FRAME is a frame, search only that frame.\n\ | |
2803 | If FRAME is nil, search only the selected frame\n\ | |
2804 | (actually the last nonminibuffer frame),\n\ | |
9c3da604 | 2805 | unless `pop-up-frames' or `display-reuse-frames' is non-nil,\n\ |
53f76081 RS |
2806 | which means search visible and iconified frames.") |
2807 | (buffer, not_this_window, frame) | |
2808 | register Lisp_Object buffer, not_this_window, frame; | |
7ab12479 | 2809 | { |
aee631c2 | 2810 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2811 | struct frame *f; |
7ab12479 | 2812 | |
aee631c2 | 2813 | swp = Qnil; |
7ab12479 JB |
2814 | buffer = Fget_buffer (buffer); |
2815 | CHECK_BUFFER (buffer, 0); | |
2816 | ||
265a9e55 | 2817 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2818 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2819 | ||
265a9e55 | 2820 | if (NILP (not_this_window) |
7ab12479 | 2821 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2822 | return display_buffer_1 (selected_window); |
7ab12479 | 2823 | |
855d8627 RS |
2824 | /* See if the user has specified this buffer should appear |
2825 | in the selected window. */ | |
2826 | if (NILP (not_this_window)) | |
2827 | { | |
aee631c2 RS |
2828 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2829 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2830 | { |
2831 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2832 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2833 | } |
855d8627 RS |
2834 | } |
2835 | ||
9c3da604 | 2836 | /* If the user wants pop-up-frames or display-reuse-frames, then |
73dc5198 KH |
2837 | look for a window showing BUFFER on any visible or iconified frame. |
2838 | Otherwise search only the current frame. */ | |
53f76081 RS |
2839 | if (! NILP (frame)) |
2840 | tem = frame; | |
9c3da604 GM |
2841 | else if (pop_up_frames |
2842 | || display_buffer_reuse_frames | |
2843 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2844 | XSETFASTINT (tem, 0); |
2845 | else | |
73dc5198 | 2846 | XSETFRAME (tem, last_nonminibuf_frame); |
9c3da604 | 2847 | |
73dc5198 | 2848 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
2849 | if (!NILP (window) |
2850 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 2851 | return display_buffer_1 (window); |
7ab12479 | 2852 | |
a90712c2 | 2853 | /* Certain buffer names get special handling. */ |
aee631c2 | 2854 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2855 | { |
4628f7a4 EN |
2856 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2857 | if (EQ (tem, Qt)) | |
a90712c2 | 2858 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2859 | if (CONSP (tem)) |
2860 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2861 | } |
2862 | ||
44fa5b1e JB |
2863 | /* If there are no frames open that have more than a minibuffer, |
2864 | we need to create a new frame. */ | |
2865 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2866 | { |
a90712c2 | 2867 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2868 | Fset_window_buffer (window, buffer); |
d07f802a | 2869 | return display_buffer_1 (window); |
7ab12479 | 2870 | } |
7ab12479 | 2871 | |
1ae1a37d | 2872 | f = SELECTED_FRAME (); |
43bad991 | 2873 | if (pop_up_windows |
1ae1a37d | 2874 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2875 | /* If the current frame is a special display frame, |
2876 | don't try to reuse its windows. */ | |
1ae1a37d | 2877 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2878 | { |
12cae7c0 KH |
2879 | Lisp_Object frames; |
2880 | ||
37962e60 | 2881 | frames = Qnil; |
1ae1a37d | 2882 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2883 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2884 | /* Don't try to create a window if would get an error */ |
2885 | if (split_height_threshold < window_min_height << 1) | |
2886 | split_height_threshold = window_min_height << 1; | |
2887 | ||
cee67da9 RS |
2888 | /* Note that both Fget_largest_window and Fget_lru_window |
2889 | ignore minibuffers and dedicated windows. | |
2890 | This means they can return nil. */ | |
7ab12479 | 2891 | |
cee67da9 RS |
2892 | /* If the frame we would try to split cannot be split, |
2893 | try other frames. */ | |
1ae1a37d | 2894 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
2895 | { |
2896 | /* Try visible frames first. */ | |
2897 | window = Fget_largest_window (Qvisible); | |
2898 | /* If that didn't work, try iconified frames. */ | |
2899 | if (NILP (window)) | |
2900 | window = Fget_largest_window (make_number (0)); | |
2901 | if (NILP (window)) | |
2902 | window = Fget_largest_window (Qt); | |
2903 | } | |
2904 | else | |
2905 | window = Fget_largest_window (frames); | |
2906 | ||
92cca945 RS |
2907 | /* If we got a tall enough full-width window that can be split, |
2908 | split it. */ | |
265a9e55 | 2909 | if (!NILP (window) |
92cca945 | 2910 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2911 | && window_height (window) >= split_height_threshold |
111e5992 | 2912 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2913 | window = Fsplit_window (window, Qnil, Qnil); |
2914 | else | |
2915 | { | |
1942f68f RS |
2916 | Lisp_Object upper, lower, other; |
2917 | ||
44fa5b1e | 2918 | window = Fget_lru_window (frames); |
92cca945 RS |
2919 | /* If the LRU window is selected, and big enough, |
2920 | and can be split, split it. */ | |
cee67da9 | 2921 | if (!NILP (window) |
92cca945 | 2922 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2923 | && (EQ (window, selected_window) |
2924 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2925 | && window_height (window) >= window_min_height << 1) |
2926 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 2927 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 2928 | |
cee67da9 | 2929 | /* Try visible frames first. */ |
48d9379d RS |
2930 | if (NILP (window)) |
2931 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
2932 | if (NILP (window)) |
2933 | window = Fget_largest_window (Qvisible); | |
2934 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
2935 | if (NILP (window)) |
2936 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
2937 | if (NILP (window)) |
2938 | window = Fget_largest_window (make_number (0)); | |
2939 | /* Try invisible frames. */ | |
48d9379d RS |
2940 | if (NILP (window)) |
2941 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
2942 | if (NILP (window)) |
2943 | window = Fget_largest_window (Qt); | |
2944 | /* As a last resort, make a new frame. */ | |
2945 | if (NILP (window)) | |
2946 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2947 | /* If window appears above or below another, |
2948 | even out their heights. */ | |
cac66e4f | 2949 | other = upper = lower = Qnil; |
1942f68f RS |
2950 | if (!NILP (XWINDOW (window)->prev)) |
2951 | other = upper = XWINDOW (window)->prev, lower = window; | |
2952 | if (!NILP (XWINDOW (window)->next)) | |
2953 | other = lower = XWINDOW (window)->next, upper = window; | |
2954 | if (!NILP (other) | |
2955 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
296b535c KH |
2956 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
2957 | && (XFASTINT (XWINDOW (other)->height) | |
2958 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 2959 | { |
296b535c KH |
2960 | int total = (XFASTINT (XWINDOW (other)->height) |
2961 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
2962 | enlarge_window (upper, |
2963 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 2964 | 0); |
1942f68f | 2965 | } |
7ab12479 JB |
2966 | } |
2967 | } | |
2968 | else | |
2969 | window = Fget_lru_window (Qnil); | |
2970 | ||
2971 | Fset_window_buffer (window, buffer); | |
d07f802a | 2972 | return display_buffer_1 (window); |
7ab12479 JB |
2973 | } |
2974 | ||
2975 | void | |
2976 | temp_output_buffer_show (buf) | |
2977 | register Lisp_Object buf; | |
2978 | { | |
2979 | register struct buffer *old = current_buffer; | |
2980 | register Lisp_Object window; | |
2981 | register struct window *w; | |
2982 | ||
bccd3dd1 RS |
2983 | XBUFFER (buf)->directory = current_buffer->directory; |
2984 | ||
7ab12479 | 2985 | Fset_buffer (buf); |
c6367666 | 2986 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2987 | BEGV = BEG; |
2988 | ZV = Z; | |
2989 | SET_PT (BEG); | |
b1599b4c | 2990 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
2991 | set_buffer_internal (old); |
2992 | ||
2993 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2994 | call1 (Vtemp_buffer_show_function, buf); | |
2995 | else | |
2996 | { | |
53f76081 | 2997 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 2998 | |
1ae1a37d | 2999 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3000 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3001 | Vminibuf_scroll_window = window; |
3002 | w = XWINDOW (window); | |
d834a2e9 | 3003 | XSETFASTINT (w->hscroll, 0); |
b73ea88e RS |
3004 | set_marker_restricted_both (w->start, buf, 1, 1); |
3005 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3006 | |
beb4e312 RS |
3007 | /* Run temp-buffer-show-hook, with the chosen window selected |
3008 | and it sbuffer current. */ | |
f52cca03 | 3009 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3010 | { |
f52cca03 RS |
3011 | Lisp_Object tem; |
3012 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3013 | if (!NILP (tem)) |
3014 | { | |
f52cca03 RS |
3015 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3016 | if (!NILP (tem)) | |
3017 | { | |
3018 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
3019 | Lisp_Object prev_window; |
3020 | prev_window = selected_window; | |
2cccc823 | 3021 | |
f52cca03 | 3022 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 3023 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 3024 | select_window_1 (window, 0); |
beb4e312 | 3025 | Fset_buffer (w->buffer); |
f52cca03 | 3026 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 3027 | select_window_1 (prev_window, 0); |
f52cca03 RS |
3028 | unbind_to (count, Qnil); |
3029 | } | |
2cccc823 RS |
3030 | } |
3031 | } | |
3032 | } | |
7ab12479 JB |
3033 | } |
3034 | \f | |
dfcf069d | 3035 | static void |
7ab12479 JB |
3036 | make_dummy_parent (window) |
3037 | Lisp_Object window; | |
3038 | { | |
cffec418 | 3039 | Lisp_Object new; |
7ab12479 | 3040 | register struct window *o, *p; |
cffec418 KH |
3041 | register struct Lisp_Vector *vec; |
3042 | int i; | |
7ab12479 | 3043 | |
cffec418 KH |
3044 | o = XWINDOW (window); |
3045 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
3046 | for (i = 0; i < VECSIZE (struct window); ++i) | |
3047 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
3048 | vec->size = VECSIZE (struct window); | |
3049 | p = (struct window *)vec; | |
3050 | XSETWINDOW (new, p); | |
7ab12479 | 3051 | |
d834a2e9 | 3052 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3053 | |
3054 | /* Put new into window structure in place of window */ | |
3055 | replace_window (window, new); | |
3056 | ||
3057 | o->next = Qnil; | |
3058 | o->prev = Qnil; | |
3059 | o->vchild = Qnil; | |
3060 | o->hchild = Qnil; | |
3061 | o->parent = new; | |
3062 | ||
3063 | p->start = Qnil; | |
3064 | p->pointm = Qnil; | |
3065 | p->buffer = Qnil; | |
3066 | } | |
3067 | ||
3068 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
3069 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
3070 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 3071 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
10f96191 RS |
3072 | and put SIZE columns in the first of the pair. In that case,\n\ |
3073 | SIZE includes that window's scroll bar, or the divider column to its right.") | |
77ae0fe3 KH |
3074 | (window, size, horflag) |
3075 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
3076 | { |
3077 | register Lisp_Object new; | |
3078 | register struct window *o, *p; | |
c0807608 | 3079 | FRAME_PTR fo; |
77ae0fe3 | 3080 | register int size_int; |
7ab12479 | 3081 | |
265a9e55 | 3082 | if (NILP (window)) |
7ab12479 JB |
3083 | window = selected_window; |
3084 | else | |
605be8af | 3085 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
3086 | |
3087 | o = XWINDOW (window); | |
c0807608 | 3088 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3089 | |
77ae0fe3 | 3090 | if (NILP (size)) |
7ab12479 | 3091 | { |
265a9e55 | 3092 | if (!NILP (horflag)) |
c0807608 | 3093 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3094 | the usable space in columns by two. |
3095 | We round up, since the left-hand window may include | |
3096 | a dividing line, while the right-hand may not. */ | |
3097 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3098 | else |
77ae0fe3 | 3099 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3100 | } |
3101 | else | |
3102 | { | |
77ae0fe3 KH |
3103 | CHECK_NUMBER (size, 1); |
3104 | size_int = XINT (size); | |
7ab12479 JB |
3105 | } |
3106 | ||
3107 | if (MINI_WINDOW_P (o)) | |
3108 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3109 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3110 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3111 | |
a481b3ea | 3112 | check_min_window_sizes (); |
7ab12479 | 3113 | |
265a9e55 | 3114 | if (NILP (horflag)) |
7ab12479 | 3115 | { |
77ae0fe3 KH |
3116 | if (size_int < window_min_height) |
3117 | error ("Window height %d too small (after splitting)", size_int); | |
3118 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3119 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3120 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3121 | if (NILP (o->parent) |
3122 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3123 | { |
3124 | make_dummy_parent (window); | |
3125 | new = o->parent; | |
3126 | XWINDOW (new)->vchild = window; | |
3127 | } | |
3128 | } | |
3129 | else | |
3130 | { | |
77ae0fe3 KH |
3131 | if (size_int < window_min_width) |
3132 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3133 | |
3134 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3135 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3136 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3137 | if (NILP (o->parent) |
3138 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3139 | { |
3140 | make_dummy_parent (window); | |
3141 | new = o->parent; | |
3142 | XWINDOW (new)->hchild = window; | |
3143 | } | |
3144 | } | |
3145 | ||
3146 | /* Now we know that window's parent is a vertical combination | |
3147 | if we are dividing vertically, or a horizontal combination | |
3148 | if we are making side-by-side windows */ | |
3149 | ||
3150 | windows_or_buffers_changed++; | |
c0807608 | 3151 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3152 | new = make_window (); |
3153 | p = XWINDOW (new); | |
3154 | ||
44fa5b1e | 3155 | p->frame = o->frame; |
7ab12479 | 3156 | p->next = o->next; |
265a9e55 | 3157 | if (!NILP (p->next)) |
7ab12479 JB |
3158 | XWINDOW (p->next)->prev = new; |
3159 | p->prev = window; | |
3160 | o->next = new; | |
3161 | p->parent = o->parent; | |
3162 | p->buffer = Qt; | |
5500c422 GM |
3163 | p->window_end_valid = Qnil; |
3164 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3165 | |
44fa5b1e | 3166 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3167 | |
265a9e55 | 3168 | if (!NILP (horflag)) |
7ab12479 JB |
3169 | { |
3170 | p->height = o->height; | |
3171 | p->top = o->top; | |
a59fed7e | 3172 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3173 | XSETFASTINT (o->width, size_int); |
3174 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3175 | } |
3176 | else | |
3177 | { | |
3178 | p->left = o->left; | |
3179 | p->width = o->width; | |
77ae0fe3 KH |
3180 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3181 | XSETFASTINT (o->height, size_int); | |
3182 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3183 | } |
3184 | ||
5500c422 GM |
3185 | /* Adjust glyph matrices. */ |
3186 | adjust_glyphs (fo); | |
543f5fb1 | 3187 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3188 | return new; |
3189 | } | |
3190 | \f | |
3191 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
3192 | "Make current window ARG lines bigger.\n\ | |
3193 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
3194 | (arg, side) |
3195 | register Lisp_Object arg, side; | |
7ab12479 | 3196 | { |
413430c5 | 3197 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3198 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3199 | |
3200 | if (! NILP (Vwindow_configuration_change_hook)) | |
3201 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3202 | ||
7ab12479 JB |
3203 | return Qnil; |
3204 | } | |
3205 | ||
3206 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
3207 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
3208 | From program, optional second arg non-nil means shrink sideways arg columns.") |
3209 | (arg, side) | |
3210 | register Lisp_Object arg, side; | |
7ab12479 | 3211 | { |
413430c5 | 3212 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3213 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3214 | |
3215 | if (! NILP (Vwindow_configuration_change_hook)) | |
3216 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3217 | ||
7ab12479 JB |
3218 | return Qnil; |
3219 | } | |
3220 | ||
3221 | int | |
3222 | window_height (window) | |
3223 | Lisp_Object window; | |
3224 | { | |
3225 | register struct window *p = XWINDOW (window); | |
3226 | return XFASTINT (p->height); | |
3227 | } | |
3228 | ||
3229 | int | |
3230 | window_width (window) | |
3231 | Lisp_Object window; | |
3232 | { | |
3233 | register struct window *p = XWINDOW (window); | |
3234 | return XFASTINT (p->width); | |
3235 | } | |
3236 | ||
c1636aa6 | 3237 | |
7ab12479 | 3238 | #define CURBEG(w) \ |
3578db3c | 3239 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3240 | |
3241 | #define CURSIZE(w) \ | |
3578db3c | 3242 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3243 | |
233a4a2c GM |
3244 | |
3245 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3246 | increase its width. Siblings of the selected window are resized to | |
3247 | fullfil the size request. If they become too small in the process, | |
3248 | they will be deleted. */ | |
7ab12479 | 3249 | |
f984d4fc | 3250 | static void |
86c8e823 GM |
3251 | enlarge_window (window, delta, widthflag) |
3252 | Lisp_Object window; | |
233a4a2c | 3253 | int delta, widthflag; |
7ab12479 | 3254 | { |
86c8e823 | 3255 | Lisp_Object parent, next, prev; |
233a4a2c | 3256 | struct window *p; |
3578db3c KR |
3257 | Lisp_Object *sizep; |
3258 | int maximum; | |
5e14b1fc AS |
3259 | int (*sizefun) P_ ((Lisp_Object)) |
3260 | = widthflag ? window_width : window_height; | |
233a4a2c | 3261 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3262 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3263 | |
233a4a2c GM |
3264 | /* Check values of window_min_width and window_min_height for |
3265 | validity. */ | |
a481b3ea | 3266 | check_min_window_sizes (); |
7ab12479 | 3267 | |
233a4a2c | 3268 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3269 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3270 | error ("Window is not resizable"); | |
3271 | ||
3272 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3273 | while (1) |
3274 | { | |
3275 | p = XWINDOW (window); | |
3276 | parent = p->parent; | |
233a4a2c | 3277 | |
265a9e55 | 3278 | if (NILP (parent)) |
7ab12479 JB |
3279 | { |
3280 | if (widthflag) | |
3281 | error ("No other window to side of this one"); | |
3282 | break; | |
3283 | } | |
233a4a2c GM |
3284 | |
3285 | if (widthflag | |
3286 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3287 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3288 | break; |
233a4a2c | 3289 | |
7ab12479 JB |
3290 | window = parent; |
3291 | } | |
3292 | ||
05c2896a | 3293 | sizep = &CURSIZE (window); |
7ab12479 | 3294 | |
7ab12479 JB |
3295 | { |
3296 | register int maxdelta; | |
7ab12479 | 3297 | |
3578db3c | 3298 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
c1636aa6 GM |
3299 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3300 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3301 | widthflag, 0, 0)) |
c1636aa6 GM |
3302 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3303 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3304 | widthflag, 0, 0)) |
44fa5b1e JB |
3305 | /* This is a frame with only one window, a minibuffer-only |
3306 | or a minibufferless frame. */ | |
d5783c40 | 3307 | : (delta = 0)); |
7ab12479 JB |
3308 | |
3309 | if (delta > maxdelta) | |
3310 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3311 | the full frame, or make the only window aside from the |
3312 | minibuffer the full frame. */ | |
7ab12479 | 3313 | delta = maxdelta; |
6b54027b | 3314 | } |
d5783c40 | 3315 | |
3578db3c | 3316 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3317 | { |
543f5fb1 | 3318 | delete_window (window); |
d5783c40 | 3319 | return; |
6b54027b RS |
3320 | } |
3321 | ||
3322 | if (delta == 0) | |
3323 | return; | |
7ab12479 | 3324 | |
db98a733 RS |
3325 | /* Find the total we can get from other siblings. */ |
3326 | maximum = 0; | |
3327 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3328 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3329 | widthflag, 0, 0); |
db98a733 | 3330 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3331 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3332 | widthflag, 0, 0); |
db98a733 RS |
3333 | |
3334 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3335 | if (delta <= maximum) |
7ab12479 | 3336 | { |
db98a733 RS |
3337 | Lisp_Object first_unaffected; |
3338 | Lisp_Object first_affected; | |
233a4a2c | 3339 | int fixed_p; |
db98a733 RS |
3340 | |
3341 | next = p->next; | |
3342 | prev = p->prev; | |
3343 | first_affected = window; | |
3344 | /* Look at one sibling at a time, | |
3345 | moving away from this window in both directions alternately, | |
3346 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3347 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3348 | { |
db98a733 RS |
3349 | if (! NILP (next)) |
3350 | { | |
c1636aa6 | 3351 | int this_one = ((*sizefun) (next) |
233a4a2c | 3352 | - window_min_size (XWINDOW (next), |
f984d4fc | 3353 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3354 | if (!fixed_p) |
3355 | { | |
3356 | if (this_one > delta) | |
3357 | this_one = delta; | |
3358 | ||
3359 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3360 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3361 | |
233a4a2c GM |
3362 | delta -= this_one; |
3363 | } | |
3364 | ||
db98a733 RS |
3365 | next = XWINDOW (next)->next; |
3366 | } | |
233a4a2c | 3367 | |
db98a733 RS |
3368 | if (delta == 0) |
3369 | break; | |
233a4a2c | 3370 | |
db98a733 RS |
3371 | if (! NILP (prev)) |
3372 | { | |
c1636aa6 | 3373 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3374 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3375 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3376 | if (!fixed_p) |
3377 | { | |
3378 | if (this_one > delta) | |
3379 | this_one = delta; | |
3380 | ||
3381 | first_affected = prev; | |
3382 | ||
3383 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3384 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3385 | |
3386 | delta -= this_one; | |
3387 | } | |
3388 | ||
db98a733 RS |
3389 | prev = XWINDOW (prev)->prev; |
3390 | } | |
3391 | } | |
3392 | ||
233a4a2c GM |
3393 | xassert (delta == 0); |
3394 | ||
db98a733 RS |
3395 | /* Now recalculate the edge positions of all the windows affected, |
3396 | based on the new sizes. */ | |
3397 | first_unaffected = next; | |
3398 | prev = first_affected; | |
3399 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3400 | prev = next, next = XWINDOW (next)->next) | |
3401 | { | |
3578db3c | 3402 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3403 | /* This does not change size of NEXT, |
3404 | but it propagates the new top edge to its children */ | |
3405 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3406 | } | |
7ab12479 JB |
3407 | } |
3408 | else | |
3409 | { | |
3410 | register int delta1; | |
3411 | register int opht = (*sizefun) (parent); | |
3412 | ||
3413 | /* If trying to grow this window to or beyond size of the parent, | |
3414 | make delta1 so big that, on shrinking back down, | |
3415 | all the siblings end up with less than one line and are deleted. */ | |
3578db3c | 3416 | if (opht <= XINT (*sizep) + delta) |
7ab12479 | 3417 | delta1 = opht * opht * 2; |
7ab12479 | 3418 | else |
233a4a2c GM |
3419 | { |
3420 | /* Otherwise, make delta1 just right so that if we add | |
3421 | delta1 lines to this window and to the parent, and then | |
3422 | shrink the parent back to its original size, the new | |
3423 | proportional size of this window will increase by delta. | |
3424 | ||
3425 | The function size_window will compute the new height h' | |
3426 | of the window from delta1 as: | |
3427 | ||
3428 | e = delta1/n | |
3429 | x = delta1 - delta1/n * n for the 1st resizable child | |
3430 | h' = h + e + x | |
3431 | ||
3432 | where n is the number of children that can be resized. | |
3433 | We can ignore x by choosing a delta1 that is a multiple of | |
3434 | n. We want the height of this window to come out as | |
3435 | ||
3436 | h' = h + delta | |
3437 | ||
3438 | So, delta1 must be | |
3439 | ||
3440 | h + e = h + delta | |
3441 | delta1/n = delta | |
3442 | delta1 = n * delta. | |
3443 | ||
3444 | The number of children n rquals the number of resizable | |
3445 | children of this window + 1 because we know window itself | |
3446 | is resizable (otherwise we would have signalled an error. */ | |
3447 | ||
3448 | struct window *w = XWINDOW (window); | |
3449 | Lisp_Object s; | |
3450 | int n = 1; | |
3451 | ||
3452 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3453 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3454 | ++n; | |
3455 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3456 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3457 | ++n; | |
3458 | ||
3459 | delta1 = n * delta; | |
3460 | } | |
7ab12479 JB |
3461 | |
3462 | /* Add delta1 lines or columns to this window, and to the parent, | |
3463 | keeping things consistent while not affecting siblings. */ | |
3578db3c KR |
3464 | XSETINT (CURSIZE (parent), opht + delta1); |
3465 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
7ab12479 JB |
3466 | |
3467 | /* Squeeze out delta1 lines or columns from our parent, | |
3468 | shriking this window and siblings proportionately. | |
3469 | This brings parent back to correct size. | |
3470 | Delta1 was calculated so this makes this window the desired size, | |
3471 | taking it all out of the siblings. */ | |
3472 | (*setsizefun) (parent, opht, 0); | |
3473 | } | |
3474 | ||
d834a2e9 | 3475 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3476 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3477 | |
3478 | /* Adjust glyph matrices. */ | |
3479 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3480 | } |
c1636aa6 | 3481 | |
7ab12479 JB |
3482 | #undef CURBEG |
3483 | #undef CURSIZE | |
3484 | ||
5500c422 | 3485 | |
f984d4fc GM |
3486 | \f |
3487 | /*********************************************************************** | |
3488 | Resizing Mini-Windows | |
3489 | ***********************************************************************/ | |
3490 | ||
3491 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3492 | |
43b4a21f GM |
3493 | enum save_restore_action |
3494 | { | |
3495 | CHECK_ORIG_SIZES, | |
3496 | SAVE_ORIG_SIZES, | |
3497 | RESTORE_ORIG_SIZES | |
3498 | }; | |
3499 | ||
3500 | static int save_restore_orig_size P_ ((struct window *, | |
3501 | enum save_restore_action)); | |
f984d4fc GM |
3502 | |
3503 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3504 | from lowest windows first. */ | |
3505 | ||
3506 | static void | |
3507 | shrink_window_lowest_first (w, height) | |
3508 | struct window *w; | |
3509 | int height; | |
3510 | { | |
3511 | struct window *c; | |
3512 | Lisp_Object child; | |
3513 | int old_height; | |
3514 | ||
3515 | xassert (!MINI_WINDOW_P (w)); | |
3516 | ||
3517 | /* Set redisplay hints. */ | |
3518 | XSETFASTINT (w->last_modified, 0); | |
3519 | XSETFASTINT (w->last_overlay_modified, 0); | |
3520 | windows_or_buffers_changed++; | |
3521 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3522 | ||
3523 | old_height = XFASTINT (w->height); | |
3524 | XSETFASTINT (w->height, height); | |
3525 | ||
3526 | if (!NILP (w->hchild)) | |
3527 | { | |
3528 | for (child = w->hchild; !NILP (child); child = c->next) | |
3529 | { | |
3530 | c = XWINDOW (child); | |
3531 | c->top = w->top; | |
3532 | shrink_window_lowest_first (c, height); | |
3533 | } | |
3534 | } | |
3535 | else if (!NILP (w->vchild)) | |
3536 | { | |
3537 | Lisp_Object last_child; | |
3538 | int delta = old_height - height; | |
3539 | int last_top; | |
6bbd7a29 GM |
3540 | |
3541 | last_child = Qnil; | |
f984d4fc GM |
3542 | |
3543 | /* Find the last child. We are taking space from lowest windows | |
3544 | first, so we iterate over children from the last child | |
3545 | backwards. */ | |
3546 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3547 | last_child = child; | |
3548 | ||
3549 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3550 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3551 | { | |
3552 | int this_one; | |
3553 | ||
3554 | c = XWINDOW (child); | |
3555 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3556 | ||
3557 | if (this_one > delta) | |
3558 | this_one = delta; | |
3559 | ||
3560 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3561 | delta -= this_one; | |
3562 | } | |
3563 | ||
3564 | /* Compute new positions. */ | |
3578db3c | 3565 | last_top = XINT (w->top); |
f984d4fc GM |
3566 | for (child = w->vchild; !NILP (child); child = c->next) |
3567 | { | |
3568 | c = XWINDOW (child); | |
3569 | c->top = make_number (last_top); | |
3570 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3571 | last_top += XFASTINT (c->height); | |
3572 | } | |
3573 | } | |
3574 | } | |
3575 | ||
3576 | ||
43b4a21f GM |
3577 | /* Save, restore, or check positions and sizes in the window tree |
3578 | rooted at W. ACTION says what to do. | |
f984d4fc | 3579 | |
43b4a21f GM |
3580 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3581 | members are valid for all windows in the window tree. Value is | |
3582 | non-zero if they are valid. | |
3583 | ||
3584 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3585 | orig_top and orig_height for all windows in the tree. | |
3586 | ||
3587 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3588 | values stored in orig_top and orig_height for all windows. */ | |
3589 | ||
3590 | static int | |
3591 | save_restore_orig_size (w, action) | |
f984d4fc | 3592 | struct window *w; |
43b4a21f | 3593 | enum save_restore_action action; |
f984d4fc | 3594 | { |
43b4a21f GM |
3595 | int success_p = 1; |
3596 | ||
f984d4fc GM |
3597 | while (w) |
3598 | { | |
3599 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3600 | { |
3601 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3602 | success_p = 0; | |
3603 | } | |
f984d4fc | 3604 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3605 | { |
3606 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3607 | success_p = 0; | |
3608 | } | |
f984d4fc | 3609 | |
43b4a21f | 3610 | switch (action) |
f984d4fc | 3611 | { |
43b4a21f GM |
3612 | case CHECK_ORIG_SIZES: |
3613 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3614 | return 0; | |
3615 | break; | |
3616 | ||
3617 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3618 | w->orig_top = w->top; |
3619 | w->orig_height = w->height; | |
43b4a21f GM |
3620 | XSETFASTINT (w->last_modified, 0); |
3621 | XSETFASTINT (w->last_overlay_modified, 0); | |
3622 | break; | |
3623 | ||
3624 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3625 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3626 | w->top = w->orig_top; | |
3627 | w->height = w->orig_height; | |
3628 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3629 | XSETFASTINT (w->last_modified, 0); |
3630 | XSETFASTINT (w->last_overlay_modified, 0); | |
3631 | break; | |
3632 | ||
3633 | default: | |
3634 | abort (); | |
f984d4fc | 3635 | } |
43b4a21f | 3636 | |
f984d4fc GM |
3637 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3638 | } | |
43b4a21f GM |
3639 | |
3640 | return success_p; | |
f984d4fc GM |
3641 | } |
3642 | ||
3643 | ||
3644 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3645 | without deleting other windows. */ | |
3646 | ||
3647 | void | |
3648 | grow_mini_window (w, delta) | |
3649 | struct window *w; | |
3650 | int delta; | |
3651 | { | |
3652 | struct frame *f = XFRAME (w->frame); | |
3653 | struct window *root; | |
3654 | ||
3655 | xassert (MINI_WINDOW_P (w)); | |
3656 | xassert (delta >= 0); | |
3657 | ||
3658 | /* Check values of window_min_width and window_min_height for | |
3659 | validity. */ | |
3660 | check_min_window_sizes (); | |
3661 | ||
3662 | /* Compute how much we can enlarge the mini-window without deleting | |
3663 | other windows. */ | |
3664 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3665 | if (delta) | |
3666 | { | |
3667 | int min_height = window_min_size (root, 0, 0, 0); | |
3668 | if (XFASTINT (root->height) - delta < min_height) | |
3669 | delta = XFASTINT (root->height) - min_height; | |
3670 | } | |
3671 | ||
3672 | if (delta) | |
3673 | { | |
3674 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3675 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3676 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3677 | |
3678 | /* Shrink other windows. */ | |
3679 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3680 | ||
3681 | /* Grow the mini-window. */ | |
3578db3c | 3682 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3683 | w->height = make_number (XFASTINT (w->height) + delta); |
3684 | XSETFASTINT (w->last_modified, 0); | |
3685 | XSETFASTINT (w->last_overlay_modified, 0); | |
3686 | ||
3687 | adjust_glyphs (f); | |
3688 | } | |
3689 | } | |
3690 | ||
3691 | ||
86c8e823 GM |
3692 | /* Shrink mini-window W. If there is recorded info about window sizes |
3693 | before a call to grow_mini_window, restore recorded window sizes. | |
3694 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3695 | line. */ | |
f984d4fc GM |
3696 | |
3697 | void | |
3698 | shrink_mini_window (w) | |
3699 | struct window *w; | |
3700 | { | |
3701 | struct frame *f = XFRAME (w->frame); | |
3702 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3703 | ||
43b4a21f | 3704 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3705 | { |
43b4a21f | 3706 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3707 | adjust_glyphs (f); |
3708 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3709 | windows_or_buffers_changed = 1; | |
3710 | } | |
86c8e823 GM |
3711 | else if (XFASTINT (w->height) > 1) |
3712 | { | |
3713 | Lisp_Object window; | |
3714 | XSETWINDOW (window, w); | |
3715 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3716 | } | |
f984d4fc GM |
3717 | } |
3718 | ||
3719 | ||
3720 | \f | |
5500c422 GM |
3721 | /* Mark window cursors off for all windows in the window tree rooted |
3722 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3723 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3724 | the frame are cleared. */ | |
3725 | ||
3726 | void | |
3727 | mark_window_cursors_off (w) | |
3728 | struct window *w; | |
3729 | { | |
3730 | while (w) | |
3731 | { | |
3732 | if (!NILP (w->hchild)) | |
3733 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3734 | else if (!NILP (w->vchild)) | |
3735 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3736 | else | |
3737 | w->phys_cursor_on_p = 0; | |
3738 | ||
3739 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3740 | } | |
3741 | } | |
3742 | ||
3743 | ||
7ab12479 JB |
3744 | /* Return number of lines of text (not counting mode line) in W. */ |
3745 | ||
3746 | int | |
3747 | window_internal_height (w) | |
3748 | struct window *w; | |
3749 | { | |
3750 | int ht = XFASTINT (w->height); | |
3751 | ||
3752 | if (MINI_WINDOW_P (w)) | |
3753 | return ht; | |
3754 | ||
265a9e55 JB |
3755 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
3756 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 3757 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
3758 | return ht - 1; |
3759 | ||
3760 | return ht; | |
3761 | } | |
3762 | ||
535e0b8e JB |
3763 | |
3764 | /* Return the number of columns in W. | |
a3c87d4e | 3765 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3766 | separating W from the sibling to its right. */ |
5500c422 | 3767 | |
535e0b8e JB |
3768 | int |
3769 | window_internal_width (w) | |
3770 | struct window *w; | |
3771 | { | |
5500c422 | 3772 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3773 | int width = XINT (w->width); |
3774 | ||
a3c87d4e | 3775 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3776 | /* Scroll bars occupy a few columns. */ |
3777 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3778 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3779 | /* The column of `|' characters separating side-by-side windows | |
3780 | occupies one column only. */ | |
3781 | width -= 1; | |
3782 | ||
3783 | /* On window-systems, areas to the left and right of the window | |
3784 | are used to display bitmaps there. */ | |
3785 | if (FRAME_WINDOW_P (f)) | |
b46dfc64 | 3786 | width -= FRAME_FLAGS_AREA_COLS (f); |
111e5992 RS |
3787 | |
3788 | return width; | |
535e0b8e JB |
3789 | } |
3790 | ||
5500c422 GM |
3791 | \f |
3792 | /************************************************************************ | |
3793 | Window Scrolling | |
3794 | ***********************************************************************/ | |
535e0b8e | 3795 | |
5500c422 GM |
3796 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
3797 | one screen-full, which is defined as the height of the window minus | |
3798 | next_screen_context_lines. If WHOLE is zero, scroll up N lines | |
3799 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3800 | means don't signal an error if we try to move over BEGV or ZV, | |
3801 | respectively. */ | |
7ab12479 | 3802 | |
101d1605 RS |
3803 | static void |
3804 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3805 | Lisp_Object window; |
3806 | int n; | |
101d1605 | 3807 | int whole; |
f8026fd8 | 3808 | int noerror; |
5500c422 GM |
3809 | { |
3810 | /* If we must, use the pixel-based version which is much slower than | |
3811 | the line-based one but can handle varying line heights. */ | |
3812 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3813 | window_scroll_pixel_based (window, n, whole, noerror); | |
3814 | else | |
3815 | window_scroll_line_based (window, n, whole, noerror); | |
3816 | } | |
3817 | ||
3818 | ||
3819 | /* Implementation of window_scroll that works based on pixel line | |
3820 | heights. See the comment of window_scroll for parameter | |
3821 | descriptions. */ | |
3822 | ||
3823 | static void | |
3824 | window_scroll_pixel_based (window, n, whole, noerror) | |
3825 | Lisp_Object window; | |
3826 | int n; | |
3827 | int whole; | |
3828 | int noerror; | |
3829 | { | |
3830 | struct it it; | |
3831 | struct window *w = XWINDOW (window); | |
3832 | struct text_pos start; | |
3833 | Lisp_Object tem; | |
3834 | int this_scroll_margin; | |
3835 | int preserve_y; | |
3836 | ||
3837 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3838 | ||
3839 | /* If PT is not visible in WINDOW, move back one half of | |
3840 | the screen. */ | |
3841 | XSETFASTINT (tem, PT); | |
81e4d465 | 3842 | tem = Fpos_visible_in_window_p (tem, window, Qt); |
5500c422 GM |
3843 | if (NILP (tem)) |
3844 | { | |
3845 | /* Move backward half the height of the window. Performance note: | |
3846 | vmotion used here is about 10% faster, but would give wrong | |
3847 | results for variable height lines. */ | |
3848 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3849 | it.current_y = it.last_visible_y; | |
3850 | move_it_vertically (&it, -it.last_visible_y / 2); | |
3851 | ||
3852 | /* The function move_iterator_vertically may move over more than | |
3853 | the specified y-distance. If it->w is small, e.g. a | |
3854 | mini-buffer window, we may end up in front of the window's | |
3855 | display area. This is the case when Start displaying at the | |
3856 | start of the line containing PT in this case. */ | |
3857 | if (it.current_y <= 0) | |
3858 | { | |
3859 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3860 | move_it_vertically (&it, 0); | |
3861 | it.current_y = 0; | |
3862 | } | |
3863 | ||
3864 | start = it.current.pos; | |
3865 | } | |
3866 | ||
3867 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3868 | point in the same window line as it is now, so get that line. */ | |
3869 | if (!NILP (Vscroll_preserve_screen_position)) | |
3870 | { | |
3871 | start_display (&it, w, start); | |
3872 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3873 | preserve_y = it.current_y; | |
3874 | } | |
3875 | else | |
3876 | preserve_y = -1; | |
3877 | ||
3878 | /* Move iterator it from start the specified distance forward or | |
3879 | backward. The result is the new window start. */ | |
3880 | start_display (&it, w, start); | |
3881 | if (whole) | |
3882 | { | |
3883 | int screen_full = (it.last_visible_y | |
3884 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); | |
3885 | int direction = n < 0 ? -1 : 1; | |
3886 | move_it_vertically (&it, direction * screen_full); | |
3887 | } | |
3888 | else | |
3889 | move_it_by_lines (&it, n, 1); | |
3890 | ||
3891 | /* End if we end up at ZV or BEGV. */ | |
3892 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
3893 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
3894 | { | |
3895 | if (noerror) | |
3896 | return; | |
3897 | else if (IT_CHARPOS (it) == ZV) | |
3898 | Fsignal (Qend_of_buffer, Qnil); | |
3899 | else | |
3900 | Fsignal (Qbeginning_of_buffer, Qnil); | |
3901 | } | |
3902 | ||
3903 | /* Set the window start, and set up the window for redisplay. */ | |
3904 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), w->buffer); | |
3905 | w->start_at_line_beg = Fbolp (); | |
3906 | w->update_mode_line = Qt; | |
3907 | XSETFASTINT (w->last_modified, 0); | |
3908 | XSETFASTINT (w->last_overlay_modified, 0); | |
3909 | /* Set force_start so that redisplay_window will run the | |
3910 | window-scroll-functions. */ | |
3911 | w->force_start = Qt; | |
3912 | ||
3913 | it.current_y = it.vpos = 0; | |
3914 | ||
3915 | /* Preserve the screen position if we must. */ | |
3916 | if (preserve_y >= 0) | |
3917 | { | |
3918 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
3919 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3920 | } | |
3921 | else | |
3922 | { | |
3923 | /* Move PT out of scroll margins. */ | |
3924 | this_scroll_margin = max (0, scroll_margin); | |
3925 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
3926 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
3927 | ||
3928 | if (n > 0) | |
3929 | { | |
3930 | /* We moved the window start towards ZV, so PT may be now | |
3931 | in the scroll margin at the top. */ | |
3932 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3933 | while (it.current_y < this_scroll_margin) | |
3934 | move_it_by_lines (&it, 1, 1); | |
3935 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3936 | } | |
3937 | else if (n < 0) | |
3938 | { | |
3939 | /* We moved the window start towards BEGV, so PT may be now | |
3940 | in the scroll margin at the bottom. */ | |
3941 | move_it_to (&it, PT, -1, | |
3942 | it.last_visible_y - this_scroll_margin - 1, -1, | |
3943 | MOVE_TO_POS | MOVE_TO_Y); | |
3944 | ||
3945 | /* Don't put point on a partially visible line at the end. */ | |
3946 | if (it.current_y + it.max_ascent + it.max_descent | |
3947 | > it.last_visible_y) | |
3948 | move_it_by_lines (&it, -1, 0); | |
3949 | ||
3950 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3951 | } | |
3952 | } | |
3953 | } | |
3954 | ||
3955 | ||
3956 | /* Implementation of window_scroll that works based on screen lines. | |
3957 | See the comment of window_scroll for parameter descriptions. */ | |
3958 | ||
3959 | static void | |
3960 | window_scroll_line_based (window, n, whole, noerror) | |
3961 | Lisp_Object window; | |
3962 | int n; | |
3963 | int whole; | |
3964 | int noerror; | |
7ab12479 JB |
3965 | { |
3966 | register struct window *w = XWINDOW (window); | |
5500c422 | 3967 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 3968 | register int pos, pos_byte; |
7ab12479 JB |
3969 | register int ht = window_internal_height (w); |
3970 | register Lisp_Object tem; | |
3971 | int lose; | |
5500c422 | 3972 | Lisp_Object bolp; |
345d45b2 | 3973 | int startpos; |
101d1605 RS |
3974 | struct position posit; |
3975 | int original_vpos; | |
3976 | ||
3977 | startpos = marker_position (w->start); | |
3978 | ||
3979 | posit = *compute_motion (startpos, 0, 0, 0, | |
3980 | PT, ht, 0, | |
3981 | window_internal_width (w), XINT (w->hscroll), | |
3982 | 0, w); | |
3983 | original_vpos = posit.vpos; | |
0a1f771a | 3984 | |
d834a2e9 | 3985 | XSETFASTINT (tem, PT); |
81e4d465 | 3986 | tem = Fpos_visible_in_window_p (tem, window, Qt); |
7ab12479 | 3987 | |
265a9e55 | 3988 | if (NILP (tem)) |
7ab12479 | 3989 | { |
cd2be1dd | 3990 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 3991 | startpos = PT; |
7ab12479 JB |
3992 | } |
3993 | ||
345d45b2 | 3994 | SET_PT (startpos); |
5ce7b543 | 3995 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 3996 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 3997 | pos = PT; |
b73ea88e | 3998 | pos_byte = PT_BYTE; |
7ab12479 | 3999 | bolp = Fbolp (); |
b73ea88e | 4000 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4001 | |
4002 | if (lose) | |
f8026fd8 JB |
4003 | { |
4004 | if (noerror) | |
4005 | return; | |
4006 | else | |
4007 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4008 | } | |
7ab12479 JB |
4009 | |
4010 | if (pos < ZV) | |
7ab12479 | 4011 | { |
0c7da84e RS |
4012 | int this_scroll_margin = scroll_margin; |
4013 | ||
4014 | /* Don't use a scroll margin that is negative or too large. */ | |
4015 | if (this_scroll_margin < 0) | |
4016 | this_scroll_margin = 0; | |
4017 | ||
4018 | if (XINT (w->height) < 4 * scroll_margin) | |
4019 | this_scroll_margin = XINT (w->height) / 4; | |
4020 | ||
b73ea88e | 4021 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4022 | w->start_at_line_beg = bolp; |
4023 | w->update_mode_line = Qt; | |
d834a2e9 | 4024 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4025 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4026 | /* Set force_start so that redisplay_window will run |
4027 | the window-scroll-functions. */ | |
4028 | w->force_start = Qt; | |
0c7da84e | 4029 | |
5500c422 | 4030 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4031 | { |
b73ea88e | 4032 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4033 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4034 | } |
101d1605 RS |
4035 | /* If we scrolled forward, put point enough lines down |
4036 | that it is outside the scroll margin. */ | |
4037 | else if (n > 0) | |
0c7da84e | 4038 | { |
101d1605 RS |
4039 | int top_margin; |
4040 | ||
4041 | if (this_scroll_margin > 0) | |
4042 | { | |
b73ea88e | 4043 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4044 | Fvertical_motion (make_number (this_scroll_margin), window); |
4045 | top_margin = PT; | |
4046 | } | |
4047 | else | |
4048 | top_margin = pos; | |
4049 | ||
4050 | if (top_margin <= opoint) | |
b73ea88e | 4051 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4052 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4053 | { |
b73ea88e | 4054 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4055 | Fvertical_motion (make_number (original_vpos), window); |
4056 | } | |
9317a85d | 4057 | else |
335406fc | 4058 | SET_PT (top_margin); |
0c7da84e | 4059 | } |
101d1605 | 4060 | else if (n < 0) |
7ab12479 | 4061 | { |
101d1605 RS |
4062 | int bottom_margin; |
4063 | ||
0c7da84e RS |
4064 | /* If we scrolled backward, put point near the end of the window |
4065 | but not within the scroll margin. */ | |
b73ea88e | 4066 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4067 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4068 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4069 | bottom_margin = PT; | |
4070 | else | |
4071 | bottom_margin = PT + 1; | |
4072 | ||
4073 | if (bottom_margin > opoint) | |
b73ea88e | 4074 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4075 | else |
101d1605 | 4076 | { |
5500c422 | 4077 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4078 | { |
b73ea88e | 4079 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4080 | Fvertical_motion (make_number (original_vpos), window); |
4081 | } | |
4082 | else | |
4083 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4084 | } |
7ab12479 JB |
4085 | } |
4086 | } | |
4087 | else | |
f8026fd8 JB |
4088 | { |
4089 | if (noerror) | |
4090 | return; | |
4091 | else | |
4092 | Fsignal (Qend_of_buffer, Qnil); | |
4093 | } | |
7ab12479 | 4094 | } |
5500c422 GM |
4095 | |
4096 | ||
4097 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4098 | screen-full which is defined as the height of the window minus | |
4099 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4100 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4101 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4102 | |
4103 | static void | |
4104 | scroll_command (n, direction) | |
5500c422 | 4105 | Lisp_Object n; |
7ab12479 JB |
4106 | int direction; |
4107 | { | |
4108 | register int defalt; | |
4109 | int count = specpdl_ptr - specpdl; | |
4110 | ||
5500c422 GM |
4111 | xassert (abs (direction) == 1); |
4112 | ||
4113 | /* If selected window's buffer isn't current, make it current for | |
4114 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4115 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4116 | { |
4117 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4118 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4119 | |
4120 | /* Make redisplay consider other windows than just selected_window. */ | |
4121 | ++windows_or_buffers_changed; | |
95605e15 | 4122 | } |
7ab12479 JB |
4123 | |
4124 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
4125 | - next_screen_context_lines); | |
4126 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
4127 | ||
265a9e55 | 4128 | if (NILP (n)) |
101d1605 | 4129 | window_scroll (selected_window, defalt, 1, 0); |
7ab12479 | 4130 | else if (EQ (n, Qminus)) |
101d1605 | 4131 | window_scroll (selected_window, - defalt, 1, 0); |
7ab12479 JB |
4132 | else |
4133 | { | |
4134 | n = Fprefix_numeric_value (n); | |
101d1605 | 4135 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4136 | } |
95605e15 JB |
4137 | |
4138 | unbind_to (count, Qnil); | |
7ab12479 JB |
4139 | } |
4140 | ||
4141 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
4142 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
4143 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 4144 | Negative ARG means scroll downward.\n\ |
dd394ff9 KH |
4145 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4146 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4147 | (arg) |
4148 | Lisp_Object arg; | |
7ab12479 | 4149 | { |
413430c5 | 4150 | scroll_command (arg, 1); |
7ab12479 JB |
4151 | return Qnil; |
4152 | } | |
4153 | ||
4154 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a5fcbc4e | 4155 | "Scroll text of current window down ARG lines; or near full screen if no ARG.\n\ |
7ab12479 | 4156 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
279e0e0c | 4157 | Negative ARG means scroll upward.\n\ |
dd394ff9 KH |
4158 | If ARG is the atom `-', scroll upward by nearly full screen.\n\ |
4159 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4160 | (arg) |
4161 | Lisp_Object arg; | |
7ab12479 | 4162 | { |
413430c5 | 4163 | scroll_command (arg, -1); |
7ab12479 JB |
4164 | return Qnil; |
4165 | } | |
ccd0664b RS |
4166 | \f |
4167 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
4168 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 4169 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
4170 | specifies the window.\n\ |
4171 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
4172 | showing that buffer is used.") | |
eb16ec06 | 4173 | () |
7ab12479 | 4174 | { |
ccd0664b | 4175 | Lisp_Object window; |
7ab12479 JB |
4176 | |
4177 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4178 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4179 | window = Vminibuf_scroll_window; |
4180 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4181 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4182 | { |
4183 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4184 | if (NILP (window)) |
53f76081 | 4185 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4186 | } |
4187 | else | |
dbc4e1c1 JB |
4188 | { |
4189 | /* Nothing specified; look for a neighboring window on the same | |
4190 | frame. */ | |
4191 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4192 | ||
4193 | if (EQ (window, selected_window)) | |
4194 | /* That didn't get us anywhere; look for a window on another | |
4195 | visible frame. */ | |
4196 | do | |
4197 | window = Fnext_window (window, Qnil, Qt); | |
4198 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4199 | && ! EQ (window, selected_window)); | |
4200 | } | |
4201 | ||
605be8af | 4202 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
4203 | |
4204 | if (EQ (window, selected_window)) | |
4205 | error ("There is no other window"); | |
4206 | ||
ccd0664b RS |
4207 | return window; |
4208 | } | |
4209 | ||
4210 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
4211 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
dd394ff9 | 4212 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
ccd0664b RS |
4213 | The next window is the one below the current one; or the one at the top\n\ |
4214 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
dd394ff9 KH |
4215 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4216 | When calling from a program, supply as argument a number, nil, or `-'.\n\ | |
ccd0664b RS |
4217 | \n\ |
4218 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
4219 | specifies the window to scroll.\n\ | |
4220 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
4221 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
4222 | (arg) |
4223 | register Lisp_Object arg; | |
ccd0664b RS |
4224 | { |
4225 | register Lisp_Object window; | |
2f787aa3 | 4226 | register int defalt; |
ccd0664b RS |
4227 | register struct window *w; |
4228 | register int count = specpdl_ptr - specpdl; | |
4229 | ||
4230 | window = Fother_window_for_scrolling (); | |
4231 | ||
7ab12479 | 4232 | w = XWINDOW (window); |
2f787aa3 KH |
4233 | defalt = window_internal_height (w) - next_screen_context_lines; |
4234 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
4235 | |
4236 | /* Don't screw up if window_scroll gets an error. */ | |
4237 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4238 | ++windows_or_buffers_changed; |
7ab12479 JB |
4239 | |
4240 | Fset_buffer (w->buffer); | |
4241 | SET_PT (marker_position (w->pointm)); | |
4242 | ||
413430c5 | 4243 | if (NILP (arg)) |
101d1605 | 4244 | window_scroll (window, defalt, 1, 1); |
413430c5 | 4245 | else if (EQ (arg, Qminus)) |
101d1605 | 4246 | window_scroll (window, -defalt, 1, 1); |
7ab12479 JB |
4247 | else |
4248 | { | |
413430c5 EN |
4249 | if (CONSP (arg)) |
4250 | arg = Fcar (arg); | |
4251 | CHECK_NUMBER (arg, 0); | |
101d1605 | 4252 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4253 | } |
4254 | ||
b73ea88e | 4255 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4256 | unbind_to (count, Qnil); |
7ab12479 JB |
4257 | |
4258 | return Qnil; | |
4259 | } | |
4260 | \f | |
644b477c | 4261 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
4262 | "Scroll selected window display ARG columns left.\n\ |
4263 | Default for ARG is window width minus 2.") | |
4264 | (arg) | |
4265 | register Lisp_Object arg; | |
4266 | { | |
4267 | ||
265a9e55 | 4268 | if (NILP (arg)) |
d834a2e9 | 4269 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4270 | else |
4271 | arg = Fprefix_numeric_value (arg); | |
4272 | ||
4273 | return | |
4274 | Fset_window_hscroll (selected_window, | |
4275 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4276 | + XINT (arg))); | |
4277 | } | |
4278 | ||
644b477c | 4279 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
4280 | "Scroll selected window display ARG columns right.\n\ |
4281 | Default for ARG is window width minus 2.") | |
4282 | (arg) | |
4283 | register Lisp_Object arg; | |
4284 | { | |
265a9e55 | 4285 | if (NILP (arg)) |
d834a2e9 | 4286 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4287 | else |
4288 | arg = Fprefix_numeric_value (arg); | |
4289 | ||
4290 | return | |
4291 | Fset_window_hscroll (selected_window, | |
4292 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4293 | - XINT (arg))); | |
4294 | } | |
4295 | ||
4296 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 4297 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 4298 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 4299 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 4300 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 4301 | redraws with point in the center of the current window.") |
413430c5 EN |
4302 | (arg) |
4303 | register Lisp_Object arg; | |
7ab12479 JB |
4304 | { |
4305 | register struct window *w = XWINDOW (selected_window); | |
4306 | register int ht = window_internal_height (w); | |
113d9015 | 4307 | struct position pos; |
478292ed RS |
4308 | struct buffer *buf = XBUFFER (w->buffer); |
4309 | struct buffer *obuf = current_buffer; | |
7ab12479 | 4310 | |
413430c5 | 4311 | if (NILP (arg)) |
7ab12479 | 4312 | { |
44fa5b1e | 4313 | extern int frame_garbaged; |
f02d6d5c KH |
4314 | int i; |
4315 | ||
4316 | /* Invalidate pixel data calculated for all compositions. */ | |
4317 | for (i = 0; i < n_compositions; i++) | |
4318 | composition_table[i]->font = NULL; | |
7ab12479 | 4319 | |
527b6458 | 4320 | Fredraw_frame (w->frame); |
44fa5b1e | 4321 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 4322 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 4323 | } |
413430c5 | 4324 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 4325 | { |
413430c5 | 4326 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
4327 | } |
4328 | else | |
4329 | { | |
413430c5 EN |
4330 | arg = Fprefix_numeric_value (arg); |
4331 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
4332 | } |
4333 | ||
413430c5 EN |
4334 | if (XINT (arg) < 0) |
4335 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 4336 | |
478292ed | 4337 | set_buffer_internal (buf); |
6ec8bbd2 | 4338 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 4339 | |
b73ea88e RS |
4340 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
4341 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
4342 | || FETCH_BYTE (pos.bytepos - 1) == '\n') | |
113d9015 | 4343 | ? Qt : Qnil); |
7ab12479 | 4344 | w->force_start = Qt; |
478292ed | 4345 | set_buffer_internal (obuf); |
7ab12479 JB |
4346 | |
4347 | return Qnil; | |
4348 | } | |
b7617575 GM |
4349 | |
4350 | ||
4351 | /* Value is the number of lines actually displayed in window W, | |
4352 | as opposed to its height. */ | |
4353 | ||
4354 | static int | |
4355 | displayed_window_lines (w) | |
4356 | struct window *w; | |
4357 | { | |
4358 | struct it it; | |
4359 | struct text_pos start; | |
3091c2a6 | 4360 | int height = window_box_height (w); |
b7617575 GM |
4361 | |
4362 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4363 | start_display (&it, w, start); | |
3091c2a6 GM |
4364 | move_it_vertically (&it, height); |
4365 | ||
4366 | /* Add in empty lines at the bottom of the window. */ | |
4367 | if (it.current_y < height) | |
4368 | { | |
4369 | struct frame *f = XFRAME (w->frame); | |
4370 | int rest = height - it.current_y; | |
4371 | int lines = (rest + CANON_Y_UNIT (f) - 1) / CANON_Y_UNIT (f); | |
4372 | it.vpos += lines; | |
4373 | } | |
4374 | ||
b7617575 GM |
4375 | return it.vpos; |
4376 | } | |
4377 | ||
4378 | ||
7ab12479 JB |
4379 | \f |
4380 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
4381 | 1, 1, "P", | |
4382 | "Position point relative to window.\n\ | |
19e3bf0a | 4383 | With no argument, position point at center of window.\n\ |
d81724c7 RS |
4384 | An argument specifies vertical position within the window;\n\ |
4385 | zero means top of window, negative means relative to bottom of window.") | |
7ab12479 | 4386 | (arg) |
b7617575 | 4387 | Lisp_Object arg; |
7ab12479 | 4388 | { |
b7617575 GM |
4389 | struct window *w = XWINDOW (selected_window); |
4390 | int lines, start; | |
540b6aa0 | 4391 | Lisp_Object window; |
7ab12479 | 4392 | |
b7617575 | 4393 | window = selected_window; |
7ab12479 JB |
4394 | start = marker_position (w->start); |
4395 | if (start < BEGV || start > ZV) | |
4396 | { | |
b7617575 | 4397 | int height = window_internal_height (w); |
cd2be1dd | 4398 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4399 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4400 | w->start_at_line_beg = Fbolp (); |
4401 | w->force_start = Qt; | |
4402 | } | |
4403 | else | |
b73ea88e | 4404 | Fgoto_char (w->start); |
7ab12479 | 4405 | |
b7617575 GM |
4406 | lines = displayed_window_lines (w); |
4407 | if (NILP (arg)) | |
4408 | XSETFASTINT (arg, lines / 2); | |
4409 | else | |
4410 | { | |
4411 | arg = Fprefix_numeric_value (arg); | |
4412 | if (XINT (arg) < 0) | |
4413 | XSETINT (arg, XINT (arg) + lines); | |
4414 | } | |
4415 | ||
540b6aa0 | 4416 | return Fvertical_motion (arg, window); |
7ab12479 | 4417 | } |
5500c422 GM |
4418 | |
4419 | ||
7ab12479 | 4420 | \f |
5500c422 GM |
4421 | /*********************************************************************** |
4422 | Window Configuration | |
4423 | ***********************************************************************/ | |
4424 | ||
7ab12479 JB |
4425 | struct save_window_data |
4426 | { | |
f5ccc0cc | 4427 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4428 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4429 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4430 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4431 | Lisp_Object selected_frame; |
7ab12479 JB |
4432 | Lisp_Object current_window; |
4433 | Lisp_Object current_buffer; | |
4434 | Lisp_Object minibuf_scroll_window; | |
4435 | Lisp_Object root_window; | |
bdc727bf | 4436 | Lisp_Object focus_frame; |
756b6edc RS |
4437 | /* Record the values of window-min-width and window-min-height |
4438 | so that window sizes remain consistent with them. */ | |
4439 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4440 | /* A vector, each of whose elements is a struct saved_window |
4441 | for one window. */ | |
7ab12479 JB |
4442 | Lisp_Object saved_windows; |
4443 | }; | |
ff06df24 | 4444 | |
cbff28e8 | 4445 | /* This is saved as a Lisp_Vector */ |
7ab12479 JB |
4446 | struct saved_window |
4447 | { | |
4448 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 4449 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
4450 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
4451 | ||
4452 | Lisp_Object window; | |
4453 | Lisp_Object buffer, start, pointm, mark; | |
4454 | Lisp_Object left, top, width, height, hscroll; | |
4455 | Lisp_Object parent, prev; | |
4456 | Lisp_Object start_at_line_beg; | |
4457 | Lisp_Object display_table; | |
4458 | }; | |
4459 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
4460 | ||
4461 | #define SAVED_WINDOW_N(swv,n) \ | |
4462 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4463 | ||
4464 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
cbff28e8 | 4465 | "Return t if OBJECT is a window-configuration object.") |
413430c5 EN |
4466 | (object) |
4467 | Lisp_Object object; | |
7ab12479 | 4468 | { |
413430c5 | 4469 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4470 | return Qt; |
4471 | return Qnil; | |
4472 | } | |
4473 | ||
3f8ab7bd RS |
4474 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
4475 | "Return the frame that CONFIG, a window-configuration object, is about.") | |
4476 | (config) | |
4477 | Lisp_Object config; | |
4478 | { | |
4479 | register struct save_window_data *data; | |
4480 | struct Lisp_Vector *saved_windows; | |
4481 | ||
4482 | if (! WINDOW_CONFIGURATIONP (config)) | |
4483 | wrong_type_argument (Qwindow_configuration_p, config); | |
4484 | ||
4485 | data = (struct save_window_data *) XVECTOR (config); | |
4486 | saved_windows = XVECTOR (data->saved_windows); | |
4487 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4488 | } | |
4489 | ||
d5b2799e RS |
4490 | DEFUN ("set-window-configuration", Fset_window_configuration, |
4491 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
4492 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
4493 | CONFIGURATION must be a value previously returned\n\ | |
3f8ab7bd RS |
4494 | by `current-window-configuration' (which see).\n\ |
4495 | If CONFIGURATION was made from a frame that is now deleted,\n\ | |
4496 | only frame-independent values can be restored. In this case,\n\ | |
4497 | the return value is nil. Otherwise the value is t.") | |
4498 | (configuration) | |
2f83aebe | 4499 | Lisp_Object configuration; |
7ab12479 | 4500 | { |
7ab12479 JB |
4501 | register struct save_window_data *data; |
4502 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4503 | Lisp_Object new_current_buffer; |
fd482be5 | 4504 | Lisp_Object frame; |
44fa5b1e | 4505 | FRAME_PTR f; |
d2b35234 | 4506 | int old_point = -1; |
7ab12479 | 4507 | |
017b2bad | 4508 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4509 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4510 | |
2f83aebe | 4511 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4512 | saved_windows = XVECTOR (data->saved_windows); |
4513 | ||
7ab12479 | 4514 | new_current_buffer = data->current_buffer; |
265a9e55 | 4515 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4516 | new_current_buffer = Qnil; |
d2b35234 RS |
4517 | else |
4518 | { | |
4519 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4520 | old_point = PT; | |
cbff28e8 | 4521 | |
d2b35234 | 4522 | } |
7ab12479 | 4523 | |
fd482be5 JB |
4524 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4525 | f = XFRAME (frame); | |
9ace597f | 4526 | |
fd482be5 JB |
4527 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4528 | However, there is other stuff we should still try to do below. */ | |
4529 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4530 | { |
fd482be5 JB |
4531 | register struct window *w; |
4532 | register struct saved_window *p; | |
5500c422 GM |
4533 | struct window *root_window; |
4534 | struct window **leaf_windows; | |
4535 | int n_leaf_windows; | |
4536 | int k, i; | |
fd482be5 JB |
4537 | |
4538 | /* If the frame has been resized since this window configuration was | |
4539 | made, we change the frame to the size specified in the | |
4540 | configuration, restore the configuration, and then resize it | |
4541 | back. We keep track of the prevailing height in these variables. */ | |
4542 | int previous_frame_height = FRAME_HEIGHT (f); | |
4543 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4544 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4545 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4546 | |
d2b35234 RS |
4547 | /* The mouse highlighting code could get screwed up |
4548 | if it runs during this. */ | |
4549 | BLOCK_INPUT; | |
4550 | ||
fd482be5 JB |
4551 | if (XFASTINT (data->frame_height) != previous_frame_height |
4552 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4553 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4554 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4555 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4556 | if (XFASTINT (data->frame_menu_bar_lines) |
4557 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4558 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4559 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4560 | if (XFASTINT (data->frame_tool_bar_lines) |
4561 | != previous_frame_tool_bar_lines) | |
4562 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4563 | #endif |
217f2871 | 4564 | #endif |
fd482be5 | 4565 | |
719eaeb1 GM |
4566 | /* "Swap out" point from the selected window |
4567 | into its buffer. We do this now, before | |
4568 | restoring the window contents, and prevent it from | |
4569 | being done later on when we select a new window. */ | |
596ae0cf RS |
4570 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4571 | { | |
4572 | w = XWINDOW (selected_window); | |
4573 | set_marker_both (w->pointm, | |
4574 | w->buffer, | |
4575 | BUF_PT (XBUFFER (w->buffer)), | |
4576 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4577 | } | |
4578 | ||
fd482be5 | 4579 | windows_or_buffers_changed++; |
29aeee73 | 4580 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4581 | |
5500c422 GM |
4582 | /* Problem: Freeing all matrices and later allocating them again |
4583 | is a serious redisplay flickering problem. What we would | |
4584 | really like to do is to free only those matrices not reused | |
4585 | below. */ | |
4586 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4587 | leaf_windows | |
4588 | = (struct window **) alloca (count_windows (root_window) | |
4589 | * sizeof (struct window *)); | |
4590 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4591 | ||
756b6edc RS |
4592 | /* Temporarily avoid any problems with windows that are smaller |
4593 | than they are supposed to be. */ | |
4594 | window_min_height = 1; | |
4595 | window_min_width = 1; | |
4596 | ||
fd482be5 JB |
4597 | /* Kludge Alert! |
4598 | Mark all windows now on frame as "deleted". | |
4599 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4600 | |
fd482be5 JB |
4601 | Save their current buffers in their height fields, since we may |
4602 | need it later, if a buffer saved in the configuration is now | |
4603 | dead. */ | |
4604 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4605 | ||
4606 | for (k = 0; k < saved_windows->size; k++) | |
4607 | { | |
4608 | p = SAVED_WINDOW_N (saved_windows, k); | |
4609 | w = XWINDOW (p->window); | |
4610 | w->next = Qnil; | |
7ab12479 | 4611 | |
fd482be5 JB |
4612 | if (!NILP (p->parent)) |
4613 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4614 | XFASTINT (p->parent))->window; | |
4615 | else | |
4616 | w->parent = Qnil; | |
7ab12479 | 4617 | |
fd482be5 | 4618 | if (!NILP (p->prev)) |
7ab12479 | 4619 | { |
fd482be5 JB |
4620 | w->prev = SAVED_WINDOW_N (saved_windows, |
4621 | XFASTINT (p->prev))->window; | |
4622 | XWINDOW (w->prev)->next = p->window; | |
4623 | } | |
4624 | else | |
4625 | { | |
4626 | w->prev = Qnil; | |
4627 | if (!NILP (w->parent)) | |
4628 | { | |
4629 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4630 | { | |
4631 | XWINDOW (w->parent)->vchild = p->window; | |
4632 | XWINDOW (w->parent)->hchild = Qnil; | |
4633 | } | |
4634 | else | |
4635 | { | |
4636 | XWINDOW (w->parent)->hchild = p->window; | |
4637 | XWINDOW (w->parent)->vchild = Qnil; | |
4638 | } | |
4639 | } | |
4640 | } | |
4641 | ||
4642 | /* If we squirreled away the buffer in the window's height, | |
4643 | restore it now. */ | |
017b2bad | 4644 | if (BUFFERP (w->height)) |
fd482be5 JB |
4645 | w->buffer = w->height; |
4646 | w->left = p->left; | |
4647 | w->top = p->top; | |
4648 | w->width = p->width; | |
4649 | w->height = p->height; | |
4650 | w->hscroll = p->hscroll; | |
4651 | w->display_table = p->display_table; | |
d834a2e9 | 4652 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4653 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4654 | |
4655 | /* Reinstall the saved buffer and pointers into it. */ | |
4656 | if (NILP (p->buffer)) | |
4657 | w->buffer = p->buffer; | |
4658 | else | |
4659 | { | |
4660 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4661 | /* If saved buffer is alive, install it. */ | |
4662 | { | |
4663 | w->buffer = p->buffer; | |
4664 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4665 | set_marker_restricted (w->start, p->start, w->buffer); |
4666 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4667 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4668 | p->mark, w->buffer); |
fd482be5 JB |
4669 | |
4670 | /* As documented in Fcurrent_window_configuration, don't | |
4671 | save the location of point in the buffer which was current | |
4672 | when the window configuration was recorded. */ | |
6b54027b RS |
4673 | if (!EQ (p->buffer, new_current_buffer) |
4674 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4675 | Fgoto_char (w->pointm); |
4676 | } | |
52a68e98 RS |
4677 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4678 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4679 | { |
fd482be5 JB |
4680 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4681 | /* This will set the markers to beginning of visible | |
4682 | range. */ | |
4683 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4684 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4685 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4686 | } |
4687 | else | |
fd482be5 | 4688 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4689 | are real. */ |
7ab12479 | 4690 | { |
fd482be5 JB |
4691 | /* Set window markers at start of visible range. */ |
4692 | if (XMARKER (w->start)->buffer == 0) | |
4693 | set_marker_restricted (w->start, make_number (0), | |
4694 | w->buffer); | |
4695 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4696 | set_marker_restricted_both (w->pointm, w->buffer, |
4697 | BUF_PT (XBUFFER (w->buffer)), | |
4698 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4699 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4700 | } |
4701 | } | |
4702 | } | |
9ace597f | 4703 | |
fd482be5 | 4704 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
4705 | /* Prevent "swapping out point" in the old selected window |
4706 | using the buffer that has been restored into it. | |
4707 | That swapping out has already been done, | |
4708 | near the beginning of this function. */ | |
4709 | selected_window = Qnil; | |
fd482be5 | 4710 | Fselect_window (data->current_window); |
396a830c RS |
4711 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
4712 | = selected_window; | |
7ab12479 | 4713 | |
db269683 | 4714 | if (NILP (data->focus_frame) |
017b2bad | 4715 | || (FRAMEP (data->focus_frame) |
db269683 JB |
4716 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
4717 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 4718 | |
fd482be5 JB |
4719 | #if 0 /* I don't understand why this is needed, and it causes problems |
4720 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 4721 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
4722 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
4723 | Qnil, 0); | |
fd482be5 JB |
4724 | #endif |
4725 | ||
4726 | /* Set the screen height to the value it had before this function. */ | |
4727 | if (previous_frame_height != FRAME_HEIGHT (f) | |
4728 | || previous_frame_width != FRAME_WIDTH (f)) | |
4729 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 4730 | 0, 0, 0); |
e3678b64 | 4731 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 4732 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
4733 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
4734 | make_number (0)); | |
4314246f | 4735 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4736 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
4737 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
4738 | make_number (0)); | |
4314246f | 4739 | #endif |
217f2871 | 4740 | #endif |
d2b35234 | 4741 | |
5500c422 GM |
4742 | /* Now, free glyph matrices in windows that were not reused. */ |
4743 | for (i = 0; i < n_leaf_windows; ++i) | |
4744 | if (NILP (leaf_windows[i]->buffer)) | |
4745 | { | |
4746 | /* Assert it's not reused as a combination. */ | |
4747 | xassert (NILP (leaf_windows[i]->hchild) | |
4748 | && NILP (leaf_windows[i]->vchild)); | |
4749 | free_window_matrices (leaf_windows[i]); | |
4750 | SET_FRAME_GARBAGED (f); | |
4751 | } | |
4752 | ||
4753 | adjust_glyphs (f); | |
4754 | ||
d2b35234 | 4755 | UNBLOCK_INPUT; |
756b6edc | 4756 | |
478292ed RS |
4757 | /* Fselect_window will have made f the selected frame, so we |
4758 | reselect the proper frame here. Fhandle_switch_frame will change the | |
4759 | selected window too, but that doesn't make the call to | |
4760 | Fselect_window above totally superfluous; it still sets f's | |
4761 | selected window. */ | |
4762 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
4763 | do_switch_frame (data->selected_frame, Qnil, 0); | |
4764 | ||
4765 | if (! NILP (Vwindow_configuration_change_hook) | |
4766 | && ! NILP (Vrun_hooks)) | |
4767 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4768 | } | |
bdc727bf JB |
4769 | |
4770 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
4771 | { |
4772 | Fset_buffer (new_current_buffer); | |
4773 | ||
4774 | /* If the buffer that is current now is the same | |
4775 | that was current before setting the window configuration, | |
4776 | don't alter its PT. */ | |
4777 | if (old_point >= 0) | |
4778 | SET_PT (old_point); | |
4779 | } | |
bdc727bf | 4780 | |
478292ed RS |
4781 | /* Restore the minimum heights recorded in the configuration. */ |
4782 | window_min_height = XINT (data->min_height); | |
4783 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 4784 | |
478292ed | 4785 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 4786 | |
3f8ab7bd | 4787 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
4788 | } |
4789 | ||
44fa5b1e | 4790 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
4791 | by setting their buffers to nil. */ |
4792 | ||
fd482be5 | 4793 | void |
7ab12479 JB |
4794 | delete_all_subwindows (w) |
4795 | register struct window *w; | |
4796 | { | |
265a9e55 | 4797 | if (!NILP (w->next)) |
7ab12479 | 4798 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 4799 | if (!NILP (w->vchild)) |
7ab12479 | 4800 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 4801 | if (!NILP (w->hchild)) |
7ab12479 | 4802 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
4803 | |
4804 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
4805 | ||
86e48436 RS |
4806 | if (!NILP (w->buffer)) |
4807 | unshow_buffer (w); | |
4808 | ||
605be8af JB |
4809 | /* We set all three of these fields to nil, to make sure that we can |
4810 | distinguish this dead window from any live window. Live leaf | |
4811 | windows will have buffer set, and combination windows will have | |
4812 | vchild or hchild set. */ | |
4813 | w->buffer = Qnil; | |
4814 | w->vchild = Qnil; | |
4815 | w->hchild = Qnil; | |
acf70840 GM |
4816 | |
4817 | Vwindow_list = Qnil; | |
7ab12479 JB |
4818 | } |
4819 | \f | |
4820 | static int | |
4821 | count_windows (window) | |
4822 | register struct window *window; | |
4823 | { | |
4824 | register int count = 1; | |
265a9e55 | 4825 | if (!NILP (window->next)) |
7ab12479 | 4826 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 4827 | if (!NILP (window->vchild)) |
7ab12479 | 4828 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 4829 | if (!NILP (window->hchild)) |
7ab12479 JB |
4830 | count += count_windows (XWINDOW (window->hchild)); |
4831 | return count; | |
4832 | } | |
4833 | ||
5500c422 GM |
4834 | |
4835 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
4836 | Value is last index + 1. */ | |
4837 | ||
4838 | static int | |
4839 | get_leaf_windows (w, flat, i) | |
4840 | struct window *w; | |
4841 | struct window **flat; | |
4842 | int i; | |
4843 | { | |
4844 | while (w) | |
4845 | { | |
4846 | if (!NILP (w->hchild)) | |
4847 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
4848 | else if (!NILP (w->vchild)) | |
4849 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
4850 | else | |
4851 | flat[i++] = w; | |
4852 | ||
4853 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4854 | } | |
4855 | ||
4856 | return i; | |
4857 | } | |
4858 | ||
4859 | ||
4860 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
4861 | null if W's current matrix is invalid, so that no meaningfull glyph | |
4862 | can be returned. */ | |
4863 | ||
4864 | struct glyph * | |
4865 | get_phys_cursor_glyph (w) | |
4866 | struct window *w; | |
4867 | { | |
4868 | struct glyph_row *row; | |
4869 | struct glyph *glyph; | |
4870 | ||
4871 | if (w->phys_cursor.vpos >= 0 | |
4872 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
4873 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
4874 | row->enabled_p) | |
4875 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
4876 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
4877 | else | |
4878 | glyph = NULL; | |
4879 | ||
4880 | return glyph; | |
4881 | } | |
4882 | ||
4883 | ||
7ab12479 JB |
4884 | static int |
4885 | save_window_save (window, vector, i) | |
4886 | Lisp_Object window; | |
4887 | struct Lisp_Vector *vector; | |
4888 | int i; | |
4889 | { | |
4890 | register struct saved_window *p; | |
4891 | register struct window *w; | |
4892 | register Lisp_Object tem; | |
4893 | ||
265a9e55 | 4894 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
4895 | { |
4896 | p = SAVED_WINDOW_N (vector, i); | |
4897 | w = XWINDOW (window); | |
4898 | ||
d834a2e9 | 4899 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
4900 | p->window = window; |
4901 | p->buffer = w->buffer; | |
4902 | p->left = w->left; | |
4903 | p->top = w->top; | |
4904 | p->width = w->width; | |
4905 | p->height = w->height; | |
4906 | p->hscroll = w->hscroll; | |
4907 | p->display_table = w->display_table; | |
265a9e55 | 4908 | if (!NILP (w->buffer)) |
7ab12479 JB |
4909 | { |
4910 | /* Save w's value of point in the window configuration. | |
4911 | If w is the selected window, then get the value of point | |
4912 | from the buffer; pointm is garbage in the selected window. */ | |
4913 | if (EQ (window, selected_window)) | |
4914 | { | |
4915 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
4916 | set_marker_both (p->pointm, w->buffer, |
4917 | BUF_PT (XBUFFER (w->buffer)), | |
4918 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
4919 | } |
4920 | else | |
eeb82665 | 4921 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 4922 | |
eeb82665 | 4923 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
4924 | p->start_at_line_beg = w->start_at_line_beg; |
4925 | ||
4926 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 4927 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
4928 | } |
4929 | else | |
4930 | { | |
4931 | p->pointm = Qnil; | |
4932 | p->start = Qnil; | |
4933 | p->mark = Qnil; | |
4934 | p->start_at_line_beg = Qnil; | |
4935 | } | |
4936 | ||
265a9e55 | 4937 | if (NILP (w->parent)) |
7ab12479 JB |
4938 | p->parent = Qnil; |
4939 | else | |
4940 | p->parent = XWINDOW (w->parent)->temslot; | |
4941 | ||
265a9e55 | 4942 | if (NILP (w->prev)) |
7ab12479 JB |
4943 | p->prev = Qnil; |
4944 | else | |
4945 | p->prev = XWINDOW (w->prev)->temslot; | |
4946 | ||
265a9e55 | 4947 | if (!NILP (w->vchild)) |
7ab12479 | 4948 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 4949 | if (!NILP (w->hchild)) |
7ab12479 JB |
4950 | i = save_window_save (w->hchild, vector, i); |
4951 | } | |
4952 | ||
4953 | return i; | |
4954 | } | |
4955 | ||
a0d76c27 EN |
4956 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
4957 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
4958 | "Return an object representing the current window configuration of FRAME.\n\ |
4959 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
4960 | This describes the number of windows, their sizes and current buffers,\n\ |
4961 | and for each displayed buffer, where display starts, and the positions of\n\ | |
4962 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
4963 | its value is -not- saved.\n\ |
4964 | This also records the currently selected frame, and FRAME's focus\n\ | |
4965 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
4966 | (frame) |
4967 | Lisp_Object frame; | |
7ab12479 JB |
4968 | { |
4969 | register Lisp_Object tem; | |
4970 | register int n_windows; | |
4971 | register struct save_window_data *data; | |
da2792e0 | 4972 | register struct Lisp_Vector *vec; |
7ab12479 | 4973 | register int i; |
44fa5b1e | 4974 | FRAME_PTR f; |
43bad991 | 4975 | |
44fa5b1e | 4976 | if (NILP (frame)) |
1ae1a37d GM |
4977 | frame = selected_frame; |
4978 | CHECK_LIVE_FRAME (frame, 0); | |
4979 | f = XFRAME (frame); | |
7ab12479 | 4980 | |
44fa5b1e | 4981 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
4982 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
4983 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
4984 | vec->contents[i] = Qnil; | |
4985 | vec->size = VECSIZE (struct save_window_data); | |
4986 | data = (struct save_window_data *)vec; | |
4987 | ||
d834a2e9 KH |
4988 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
4989 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
4990 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 4991 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 4992 | data->selected_frame = selected_frame; |
44fa5b1e | 4993 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 4994 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 4995 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 4996 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 4997 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
4998 | XSETINT (data->min_height, window_min_height); |
4999 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5000 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5001 | data->saved_windows = tem; | |
5002 | for (i = 0; i < n_windows; i++) | |
5003 | XVECTOR (tem)->contents[i] | |
5004 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 5005 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 5006 | XVECTOR (tem), 0); |
74112613 | 5007 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5008 | return (tem); |
5009 | } | |
5010 | ||
5011 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
5012 | 0, UNEVALLED, 0, | |
5013 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
5014 | Restore which buffer appears in which window, where display starts,\n\ |
5015 | and the value of point and mark for each window.\n\ | |
8ed92cf0 | 5016 | Also restore the choice of selected window.\n\ |
eb16ec06 | 5017 | Also restore which buffer is current.\n\ |
7ab12479 JB |
5018 | Does not restore the value of point in current buffer.") |
5019 | (args) | |
5020 | Lisp_Object args; | |
5021 | { | |
5022 | register Lisp_Object val; | |
5023 | register int count = specpdl_ptr - specpdl; | |
5024 | ||
5025 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5026 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5027 | val = Fprogn (args); |
5028 | return unbind_to (count, val); | |
5029 | } | |
5500c422 GM |
5030 | |
5031 | \f | |
5032 | /*********************************************************************** | |
5033 | Marginal Areas | |
5034 | ***********************************************************************/ | |
5035 | ||
5036 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5037 | 2, 3, 0, |
5500c422 | 5038 | "Set width of marginal areas of window WINDOW.\n\ |
a7bdfc08 | 5039 | If window is nil, set margins of the currently selected window.\n\ |
5500c422 GM |
5040 | First parameter LEFT-WIDTH specifies the number of character\n\ |
5041 | cells to reserve for the left marginal area. Second parameter\n\ | |
5042 | RIGHT-WIDTH does the same for the right marginal area.\n\ | |
5043 | A nil width parameter means no margin.") | |
cfa22082 | 5044 | (window, left, right) |
5500c422 GM |
5045 | Lisp_Object window, left, right; |
5046 | { | |
5047 | struct window *w = decode_window (window); | |
5500c422 GM |
5048 | |
5049 | if (!NILP (left)) | |
cfa22082 | 5050 | CHECK_NUMBER_OR_FLOAT (left, 1); |
5500c422 | 5051 | if (!NILP (right)) |
cfa22082 | 5052 | CHECK_NUMBER_OR_FLOAT (right, 2); |
5500c422 GM |
5053 | |
5054 | /* Check widths < 0 and translate a zero width to nil. | |
5055 | Margins that are too wide have to be checked elsewhere. */ | |
5056 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5057 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5058 | XSETFASTINT (left, 0); |
5059 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5060 | left = Qnil; | |
5061 | ||
5062 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 5063 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5064 | XSETFASTINT (right, 0); |
5065 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5066 | right = Qnil; | |
5067 | ||
5068 | w->left_margin_width = left; | |
5069 | w->right_margin_width = right; | |
5070 | ||
5071 | ++windows_or_buffers_changed; | |
5072 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5073 | return Qnil; | |
5074 | } | |
5075 | ||
5076 | ||
5077 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5078 | 0, 1, 0, | |
5079 | "Get width of marginal areas of window WINDOW.\n\ | |
5080 | If WINDOW is omitted or nil, use the currently selected window.\n\ | |
5081 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).\n\ | |
5082 | If a marginal area does not exist, its width will be returned\n\ | |
5083 | as nil.") | |
5084 | (window) | |
5085 | Lisp_Object window; | |
5086 | { | |
5087 | struct window *w = decode_window (window); | |
5088 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5089 | } | |
5090 | ||
5091 | ||
7ab12479 | 5092 | \f |
5500c422 GM |
5093 | /*********************************************************************** |
5094 | Smooth scrolling | |
5095 | ***********************************************************************/ | |
5096 | ||
5097 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
5098 | "Return the amount by which WINDOW is scrolled vertically.\n\ | |
5099 | Use the selected window if WINDOW is nil or omitted.\n\ | |
5100 | Value is a multiple of the canonical character height of WINDOW.") | |
5101 | (window) | |
5102 | Lisp_Object window; | |
5103 | { | |
47004952 | 5104 | Lisp_Object result; |
5500c422 GM |
5105 | struct frame *f; |
5106 | struct window *w; | |
5107 | ||
5108 | if (NILP (window)) | |
5109 | window = selected_window; | |
47004952 GM |
5110 | else |
5111 | CHECK_WINDOW (window, 0); | |
5500c422 GM |
5112 | w = XWINDOW (window); |
5113 | f = XFRAME (w->frame); | |
5114 | ||
5115 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5116 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5117 | else |
47004952 GM |
5118 | result = make_number (0); |
5119 | return result; | |
5500c422 GM |
5120 | } |
5121 | ||
5122 | ||
5123 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 GM |
5124 | 2, 2, 0, |
5125 | "Set amount by which WINDOW should be scrolled vertically to VSCROLL.\n\ | |
5500c422 | 5126 | WINDOW nil or omitted means use the selected window. VSCROLL is a\n\ |
47004952 GM |
5127 | non-negative multiple of the canonical character height of WINDOW.") |
5128 | (window, vscroll) | |
5129 | Lisp_Object window, vscroll; | |
5500c422 GM |
5130 | { |
5131 | struct window *w; | |
5132 | struct frame *f; | |
5133 | ||
5500c422 GM |
5134 | if (NILP (window)) |
5135 | window = selected_window; | |
47004952 GM |
5136 | else |
5137 | CHECK_WINDOW (window, 0); | |
5138 | CHECK_NUMBER_OR_FLOAT (vscroll, 1); | |
5139 | ||
5500c422 GM |
5140 | w = XWINDOW (window); |
5141 | f = XFRAME (w->frame); | |
5142 | ||
5143 | if (FRAME_WINDOW_P (f)) | |
5144 | { | |
5145 | int old_dy = w->vscroll; | |
47004952 GM |
5146 | |
5147 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5148 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5149 | |
5150 | /* Adjust glyph matrix of the frame if the virtual display | |
5151 | area becomes larger than before. */ | |
5152 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5153 | adjust_glyphs (f); | |
5154 | ||
5155 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5156 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5157 | } |
5158 | ||
47004952 | 5159 | return Fwindow_vscroll (window); |
5500c422 GM |
5160 | } |
5161 | ||
7bbb5782 GM |
5162 | \f |
5163 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5164 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5165 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5166 | |
5167 | void | |
f95464e4 | 5168 | foreach_window (f, fn, user_data) |
7bbb5782 | 5169 | struct frame *f; |
f95464e4 GM |
5170 | int (* fn) P_ ((struct window *, void *)); |
5171 | void *user_data; | |
7bbb5782 | 5172 | { |
f95464e4 | 5173 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5174 | } |
5175 | ||
5176 | ||
5177 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5178 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5179 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5180 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5181 | |
67492200 | 5182 | static int |
f95464e4 | 5183 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5184 | struct window *w; |
f95464e4 GM |
5185 | int (* fn) P_ ((struct window *, void *)); |
5186 | void *user_data; | |
7bbb5782 | 5187 | { |
67492200 GM |
5188 | int cont; |
5189 | ||
5190 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5191 | { |
5192 | if (!NILP (w->hchild)) | |
f95464e4 | 5193 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5194 | else if (!NILP (w->vchild)) |
f95464e4 | 5195 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
0f532a9a GM |
5196 | else |
5197 | cont = fn (w, user_data); | |
7bbb5782 GM |
5198 | |
5199 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5200 | } | |
67492200 GM |
5201 | |
5202 | return cont; | |
7bbb5782 GM |
5203 | } |
5204 | ||
5205 | ||
5206 | /* Freeze or unfreeze the window start of W if unless it is a | |
f95464e4 | 5207 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5208 | the window start. */ |
5209 | ||
67492200 | 5210 | static int |
7bbb5782 GM |
5211 | freeze_window_start (w, freeze_p) |
5212 | struct window *w; | |
f95464e4 | 5213 | void *freeze_p; |
7bbb5782 GM |
5214 | { |
5215 | if (w == XWINDOW (selected_window) | |
5216 | || MINI_WINDOW_P (w) | |
5217 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5218 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5219 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5220 | freeze_p = NULL; |
7bbb5782 | 5221 | |
f95464e4 | 5222 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5223 | return 1; |
7bbb5782 GM |
5224 | } |
5225 | ||
5226 | ||
5227 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5228 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5229 | means freeze the window start. */ | |
5230 | ||
5231 | void | |
5232 | freeze_window_starts (f, freeze_p) | |
5233 | struct frame *f; | |
5234 | int freeze_p; | |
5235 | { | |
cbccabec | 5236 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5237 | } |
5500c422 GM |
5238 | |
5239 | \f | |
5240 | /*********************************************************************** | |
5241 | Initialization | |
5242 | ***********************************************************************/ | |
5243 | ||
cbff28e8 RS |
5244 | /* Return 1 if window configurations C1 and C2 |
5245 | describe the same state of affairs. This is used by Fequal. */ | |
5246 | ||
5247 | int | |
2f8274be | 5248 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5249 | Lisp_Object c1, c2; |
2f8274be | 5250 | int ignore_positions; |
cbff28e8 RS |
5251 | { |
5252 | register struct save_window_data *d1, *d2; | |
5253 | struct Lisp_Vector *sw1, *sw2; | |
5254 | int i; | |
5255 | ||
4d3edcb4 GM |
5256 | if (!WINDOW_CONFIGURATIONP (c1)) |
5257 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5258 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5259 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5260 | ||
cbff28e8 RS |
5261 | d1 = (struct save_window_data *) XVECTOR (c1); |
5262 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5263 | sw1 = XVECTOR (d1->saved_windows); | |
5264 | sw2 = XVECTOR (d2->saved_windows); | |
5265 | ||
5266 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5267 | return 0; | |
5268 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5269 | return 0; | |
5270 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5271 | return 0; | |
5272 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5273 | return 0; | |
5274 | /* Don't compare the current_window field directly. | |
5275 | Instead see w1_is_current and w2_is_current, below. */ | |
5276 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5277 | return 0; | |
2f8274be RS |
5278 | if (! ignore_positions) |
5279 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5280 | return 0; | |
cbff28e8 RS |
5281 | /* Don't compare the root_window field. |
5282 | We don't require the two configurations | |
5283 | to use the same window object, | |
5284 | and the two root windows must be equivalent | |
5285 | if everything else compares equal. */ | |
5286 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5287 | return 0; | |
5288 | if (! EQ (d1->min_width, d2->min_width)) | |
5289 | return 0; | |
5290 | if (! EQ (d1->min_height, d2->min_height)) | |
5291 | return 0; | |
5292 | ||
5293 | /* Verify that the two confis have the same number of windows. */ | |
5294 | if (sw1->size != sw2->size) | |
5295 | return 0; | |
5296 | ||
5297 | for (i = 0; i < sw1->size; i++) | |
5298 | { | |
5299 | struct saved_window *p1, *p2; | |
5300 | int w1_is_current, w2_is_current; | |
5301 | ||
5302 | p1 = SAVED_WINDOW_N (sw1, i); | |
5303 | p2 = SAVED_WINDOW_N (sw2, i); | |
5304 | ||
5305 | /* Verify that the current windows in the two | |
5306 | configurations correspond to each other. */ | |
5307 | w1_is_current = EQ (d1->current_window, p1->window); | |
5308 | w2_is_current = EQ (d2->current_window, p2->window); | |
5309 | ||
5310 | if (w1_is_current != w2_is_current) | |
5311 | return 0; | |
5312 | ||
5313 | /* Verify that the corresponding windows do match. */ | |
5314 | if (! EQ (p1->buffer, p2->buffer)) | |
5315 | return 0; | |
5316 | if (! EQ (p1->left, p2->left)) | |
5317 | return 0; | |
5318 | if (! EQ (p1->top, p2->top)) | |
5319 | return 0; | |
5320 | if (! EQ (p1->width, p2->width)) | |
5321 | return 0; | |
5322 | if (! EQ (p1->height, p2->height)) | |
5323 | return 0; | |
cbff28e8 RS |
5324 | if (! EQ (p1->display_table, p2->display_table)) |
5325 | return 0; | |
5326 | if (! EQ (p1->parent, p2->parent)) | |
5327 | return 0; | |
5328 | if (! EQ (p1->prev, p2->prev)) | |
5329 | return 0; | |
2f8274be RS |
5330 | if (! ignore_positions) |
5331 | { | |
5332 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5333 | return 0; | |
5334 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) | |
5335 | return 0; | |
5336 | if (NILP (Fequal (p1->start, p2->start))) | |
5337 | return 0; | |
5338 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5339 | return 0; | |
5340 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5341 | return 0; | |
5342 | } | |
cbff28e8 RS |
5343 | } |
5344 | ||
5345 | return 1; | |
5346 | } | |
2f8274be RS |
5347 | |
5348 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5349 | Scompare_window_configurations, 2, 2, 0, | |
5350 | "Compare two window configurations as regards the structure of windows.\n\ | |
5351 | This function ignores details such as the values of point and mark\n\ | |
5352 | and scrolling positions.") | |
5353 | (x, y) | |
5354 | Lisp_Object x, y; | |
5355 | { | |
5356 | if (compare_window_configurations (x, y, 1)) | |
5357 | return Qt; | |
5358 | return Qnil; | |
5359 | } | |
cbff28e8 | 5360 | \f |
dfcf069d | 5361 | void |
7ab12479 JB |
5362 | init_window_once () |
5363 | { | |
1ae1a37d GM |
5364 | struct frame *f = make_terminal_frame (); |
5365 | XSETFRAME (selected_frame, f); | |
5366 | Vterminal_frame = selected_frame; | |
5367 | minibuf_window = f->minibuffer_window; | |
5368 | selected_window = f->selected_window; | |
5369 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5370 | |
5371 | window_initialized = 1; | |
7ab12479 JB |
5372 | } |
5373 | ||
67492200 GM |
5374 | void |
5375 | init_window () | |
5376 | { | |
5377 | Vwindow_list = Qnil; | |
5378 | } | |
5379 | ||
dfcf069d | 5380 | void |
7ab12479 JB |
5381 | syms_of_window () |
5382 | { | |
fbad6f9a GM |
5383 | Qleft_bitmap_area = intern ("left-bitmap-area"); |
5384 | staticpro (&Qleft_bitmap_area); | |
5385 | Qright_bitmap_area = intern ("right-bitmap-area"); | |
5386 | staticpro (&Qright_bitmap_area); | |
5387 | ||
8a37516b GM |
5388 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5389 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5390 | |
543f5fb1 RS |
5391 | staticpro (&Qwindow_configuration_change_hook); |
5392 | Qwindow_configuration_change_hook | |
5393 | = intern ("window-configuration-change-hook"); | |
5394 | ||
7ab12479 JB |
5395 | Qwindowp = intern ("windowp"); |
5396 | staticpro (&Qwindowp); | |
5397 | ||
3f8ab7bd RS |
5398 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5399 | staticpro (&Qwindow_configuration_p); | |
5400 | ||
806b4d9b JB |
5401 | Qwindow_live_p = intern ("window-live-p"); |
5402 | staticpro (&Qwindow_live_p); | |
605be8af | 5403 | |
2cccc823 | 5404 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5405 | staticpro (&Qtemp_buffer_show_hook); |
5406 | ||
67492200 GM |
5407 | staticpro (&Vwindow_list); |
5408 | ||
7ab12479 JB |
5409 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
5410 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 5411 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
5412 | Used by `with-output-to-temp-buffer'.\n\ |
5413 | If this function is used, then it must do the entire job of showing\n\ | |
5414 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
5415 | Vtemp_buffer_show_function = Qnil; |
5416 | ||
5417 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
5418 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
5419 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
5420 | that the currently selected window is not acceptable.\n\ | |
5421 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
5422 | work using this function."); | |
5423 | Vdisplay_buffer_function = Qnil; | |
5424 | ||
7ab12479 JB |
5425 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
5426 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
5427 | Vminibuf_scroll_window = Qnil; | |
5428 | ||
5429 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
5430 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
5431 | Vother_window_scroll_buffer = Qnil; | |
5432 | ||
44fa5b1e | 5433 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 5434 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 5435 | pop_up_frames = 0; |
7ab12479 | 5436 | |
9c3da604 | 5437 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
5372262f | 5438 | "*Non-nil means `display-buffer' should reuse frames.\n\ |
9c3da604 GM |
5439 | If the buffer in question is already displayed in a frame, raise that frame."); |
5440 | display_buffer_reuse_frames = 0; | |
5441 | ||
44fa5b1e | 5442 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 5443 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 5444 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 5445 | \n\ |
44fa5b1e JB |
5446 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
5447 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
5448 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 5449 | |
a90712c2 RS |
5450 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
5451 | "*List of buffer names that should have their own special frames.\n\ | |
5452 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 5453 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 5454 | \n\ |
524580a4 RS |
5455 | An element of the list can be a list instead of just a string.\n\ |
5456 | There are two ways to use a list as an element:\n\ | |
5457 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
5458 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5459 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
5460 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
4caa7448 RS |
5461 | All this is done by the function found in `special-display-function'.\n\ |
5462 | \n\ | |
5463 | If this variable appears \"not to work\", because you add a name to it\n\ | |
5464 | but that buffer still appears in the selected window, look at the\n\ | |
5465 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5466 | Those variables take precedence over this one."); | |
a90712c2 RS |
5467 | Vspecial_display_buffer_names = Qnil; |
5468 | ||
5469 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
5470 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
5471 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
5472 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 5473 | using `special-display-function'.\n\ |
3548e138 | 5474 | \n\ |
524580a4 RS |
5475 | An element of the list can be a list instead of just a string.\n\ |
5476 | There are two ways to use a list as an element:\n\ | |
5477 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
5478 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5479 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
5480 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
4caa7448 RS |
5481 | All this is done by the function found in `special-display-function'.\n\ |
5482 | \n\ | |
5483 | If this variable appears \"not to work\", because you add a regexp to it\n\ | |
5484 | but the matching buffers still appear in the selected window, look at the\n\ | |
5485 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5486 | Those variables take precedence over this one."); | |
a90712c2 RS |
5487 | Vspecial_display_regexps = Qnil; |
5488 | ||
5489 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
5490 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
5491 | It is called with two arguments, the buffer and optional buffer specific\n\ |
5492 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 5493 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 5494 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
5495 | \n\ |
5496 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
5497 | or matches a regexp in `special-display-regexps'."); | |
5498 | Vspecial_display_function = Qnil; | |
5499 | ||
855d8627 RS |
5500 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
5501 | "*List of buffer names that should appear in the selected window.\n\ | |
5502 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
5503 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 5504 | in some other window.\n\ |
855d8627 RS |
5505 | \n\ |
5506 | An element of the list can be a cons cell instead of just a string.\n\ | |
5507 | Then the car must be a string, which specifies the buffer name.\n\ | |
5508 | This is for compatibility with `special-display-buffer-names';\n\ | |
5509 | the cdr of the cons cell is ignored.\n\ | |
5510 | \n\ | |
5511 | See also `same-window-regexps'."); | |
5512 | Vsame_window_buffer_names = Qnil; | |
5513 | ||
5514 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
5515 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
5516 | If a buffer name matches one of these regexps, then displaying it\n\ | |
5517 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
5518 | in the selected window, rather than making it appear in some other window.\n\ | |
5519 | \n\ | |
5520 | An element of the list can be a cons cell instead of just a string.\n\ | |
5521 | Then the car must be a string, which specifies the buffer name.\n\ | |
5522 | This is for compatibility with `special-display-buffer-names';\n\ | |
5523 | the cdr of the cons cell is ignored.\n\ | |
5524 | \n\ | |
5525 | See also `same-window-buffer-names'."); | |
5526 | Vsame_window_regexps = Qnil; | |
5527 | ||
7ab12479 JB |
5528 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
5529 | "*Non-nil means display-buffer should make new windows."); | |
5530 | pop_up_windows = 1; | |
5531 | ||
5532 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
5533 | "*Number of lines of continuity when scrolling by screenfuls."); | |
5534 | next_screen_context_lines = 2; | |
5535 | ||
5536 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
5537 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
5538 | If there is only one window, it is split regardless of this value."); | |
5539 | split_height_threshold = 500; | |
5540 | ||
5541 | DEFVAR_INT ("window-min-height", &window_min_height, | |
5542 | "*Delete any window less than this tall (including its mode line)."); | |
5543 | window_min_height = 4; | |
5544 | ||
5545 | DEFVAR_INT ("window-min-width", &window_min_width, | |
5546 | "*Delete any window less than this wide."); | |
5547 | window_min_width = 10; | |
5548 | ||
5500c422 GM |
5549 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5550 | &Vscroll_preserve_screen_position, | |
9317a85d | 5551 | "*Nonzero means scroll commands move point to keep its screen line unchanged."); |
5500c422 | 5552 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5553 | |
543f5fb1 RS |
5554 | DEFVAR_LISP ("window-configuration-change-hook", |
5555 | &Vwindow_configuration_change_hook, | |
5556 | "Functions to call when window configuration changes.\n\ | |
e3e041eb | 5557 | The selected frame is the one whose configuration has changed."); |
543f5fb1 RS |
5558 | Vwindow_configuration_change_hook = Qnil; |
5559 | ||
7ab12479 JB |
5560 | defsubr (&Sselected_window); |
5561 | defsubr (&Sminibuffer_window); | |
5562 | defsubr (&Swindow_minibuffer_p); | |
5563 | defsubr (&Swindowp); | |
806b4d9b | 5564 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5565 | defsubr (&Spos_visible_in_window_p); |
5566 | defsubr (&Swindow_buffer); | |
5567 | defsubr (&Swindow_height); | |
5568 | defsubr (&Swindow_width); | |
5569 | defsubr (&Swindow_hscroll); | |
5570 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5571 | defsubr (&Swindow_redisplay_end_trigger); |
5572 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5573 | defsubr (&Swindow_edges); |
d5783c40 JB |
5574 | defsubr (&Scoordinates_in_window_p); |
5575 | defsubr (&Swindow_at); | |
7ab12479 JB |
5576 | defsubr (&Swindow_point); |
5577 | defsubr (&Swindow_start); | |
5578 | defsubr (&Swindow_end); | |
5579 | defsubr (&Sset_window_point); | |
5580 | defsubr (&Sset_window_start); | |
5581 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5582 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5583 | defsubr (&Swindow_display_table); |
5584 | defsubr (&Sset_window_display_table); | |
5585 | defsubr (&Snext_window); | |
5586 | defsubr (&Sprevious_window); | |
5587 | defsubr (&Sother_window); | |
5588 | defsubr (&Sget_lru_window); | |
5589 | defsubr (&Sget_largest_window); | |
5590 | defsubr (&Sget_buffer_window); | |
5591 | defsubr (&Sdelete_other_windows); | |
5592 | defsubr (&Sdelete_windows_on); | |
5593 | defsubr (&Sreplace_buffer_in_windows); | |
5594 | defsubr (&Sdelete_window); | |
5595 | defsubr (&Sset_window_buffer); | |
5596 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5597 | defsubr (&Sspecial_display_p); |
5598 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5599 | defsubr (&Sdisplay_buffer); |
5600 | defsubr (&Ssplit_window); | |
5601 | defsubr (&Senlarge_window); | |
5602 | defsubr (&Sshrink_window); | |
5603 | defsubr (&Sscroll_up); | |
5604 | defsubr (&Sscroll_down); | |
5605 | defsubr (&Sscroll_left); | |
5606 | defsubr (&Sscroll_right); | |
ccd0664b | 5607 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5608 | defsubr (&Sscroll_other_window); |
5609 | defsubr (&Srecenter); | |
5610 | defsubr (&Smove_to_window_line); | |
5611 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5612 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5613 | defsubr (&Sset_window_configuration); |
5614 | defsubr (&Scurrent_window_configuration); | |
5615 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5616 | defsubr (&Sset_window_margins); |
5617 | defsubr (&Swindow_margins); | |
5618 | defsubr (&Swindow_vscroll); | |
5619 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5620 | defsubr (&Scompare_window_configurations); |
67492200 | 5621 | defsubr (&Swindow_list); |
7ab12479 JB |
5622 | } |
5623 | ||
dfcf069d | 5624 | void |
7ab12479 JB |
5625 | keys_of_window () |
5626 | { | |
5627 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5628 | initial_define_key (control_x_map, '2', "split-window"); | |
5629 | initial_define_key (control_x_map, '0', "delete-window"); | |
5630 | initial_define_key (control_x_map, 'o', "other-window"); | |
5631 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5632 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5633 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5634 | ||
5635 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5636 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5637 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5638 | ||
5639 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5640 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5641 | } |