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" | |
44fa5b1e | 25 | #include "frame.h" |
7ab12479 JB |
26 | #include "window.h" |
27 | #include "commands.h" | |
28 | #include "indent.h" | |
29 | #include "termchar.h" | |
30 | #include "disptab.h" | |
f8026fd8 | 31 | #include "keyboard.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 GM |
38 | #endif /* HAVE_X_WINDOWS */ |
39 | ||
40 | #ifndef max | |
41 | #define max(a, b) ((a) < (b) ? (b) : (a)) | |
dfcf069d | 42 | #endif |
7ab12479 | 43 | |
5500c422 | 44 | |
3f8ab7bd | 45 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
8a37516b | 46 | Lisp_Object Qwindow_size_fixed, Qleft_bitmap_area, Qright_bitmap_area; |
233a4a2c | 47 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 48 | |
5e14b1fc | 49 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 50 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
51 | static int count_windows P_ ((struct window *)); |
52 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
53 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
54 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
55 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 56 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 57 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 58 | static void size_window P_ ((Lisp_Object, int, int, int)); |
7bbb5782 GM |
59 | static void foreach_window_1 P_ ((struct window *, void (*fn) (), int, int, |
60 | int, int)); | |
61 | static void freeze_window_start P_ ((struct window *, int)); | |
f984d4fc | 62 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
86c8e823 | 63 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
5500c422 | 64 | |
b7354ddf | 65 | |
7ab12479 JB |
66 | /* This is the window in which the terminal's cursor should |
67 | be left when nothing is being done with it. This must | |
68 | always be a leaf window, and its buffer is selected by | |
69 | the top level editing loop at the end of each command. | |
70 | ||
71 | This value is always the same as | |
44fa5b1e | 72 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
73 | |
74 | Lisp_Object selected_window; | |
75 | ||
5500c422 GM |
76 | /* The mini-buffer window of the selected frame. |
77 | Note that you cannot test for mini-bufferness of an arbitrary window | |
78 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 79 | the selected window. */ |
5500c422 | 80 | |
7ab12479 JB |
81 | Lisp_Object minibuf_window; |
82 | ||
83 | /* Non-nil means it is the window for C-M-v to scroll | |
5500c422 GM |
84 | when the mini-buffer is selected. */ |
85 | ||
7ab12479 JB |
86 | Lisp_Object Vminibuf_scroll_window; |
87 | ||
88 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 89 | |
7ab12479 JB |
90 | Lisp_Object Vother_window_scroll_buffer; |
91 | ||
7ab12479 | 92 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 93 | |
7ab12479 JB |
94 | Lisp_Object Vtemp_buffer_show_function; |
95 | ||
96 | /* If a window gets smaller than either of these, it is removed. */ | |
5500c422 | 97 | |
7ab12479 JB |
98 | int window_min_height; |
99 | int window_min_width; | |
100 | ||
101 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 102 | |
7ab12479 JB |
103 | int pop_up_windows; |
104 | ||
44fa5b1e | 105 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 106 | |
44fa5b1e | 107 | int pop_up_frames; |
7ab12479 JB |
108 | |
109 | /* Non-nil means use this function instead of default */ | |
5500c422 | 110 | |
44fa5b1e | 111 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
112 | |
113 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 114 | |
7ab12479 JB |
115 | Lisp_Object Vdisplay_buffer_function; |
116 | ||
a90712c2 | 117 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 118 | |
a90712c2 RS |
119 | Lisp_Object Vspecial_display_buffer_names; |
120 | ||
121 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 122 | |
a90712c2 RS |
123 | Lisp_Object Vspecial_display_regexps; |
124 | ||
125 | /* Function to pop up a special frame. */ | |
5500c422 | 126 | |
a90712c2 RS |
127 | Lisp_Object Vspecial_display_function; |
128 | ||
855d8627 | 129 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 130 | |
855d8627 RS |
131 | Lisp_Object Vsame_window_buffer_names; |
132 | ||
133 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 134 | |
855d8627 RS |
135 | Lisp_Object Vsame_window_regexps; |
136 | ||
a58ec57d | 137 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 138 | |
a58ec57d RS |
139 | Lisp_Object Qtemp_buffer_show_hook; |
140 | ||
37962e60 | 141 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 142 | if that window is more than this high. */ |
5500c422 | 143 | |
7ab12479 JB |
144 | int split_height_threshold; |
145 | ||
146 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 147 | |
7ab12479 JB |
148 | int next_screen_context_lines; |
149 | ||
150 | /* Incremented for each window created. */ | |
5500c422 | 151 | |
7ab12479 JB |
152 | static int sequence_number; |
153 | ||
5b03d3c0 | 154 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 155 | |
5b03d3c0 RS |
156 | static int window_initialized; |
157 | ||
543f5fb1 | 158 | /* Hook to run when window config changes. */ |
5500c422 | 159 | |
543f5fb1 RS |
160 | Lisp_Object Qwindow_configuration_change_hook; |
161 | Lisp_Object Vwindow_configuration_change_hook; | |
162 | ||
9317a85d RS |
163 | /* Nonzero means scroll commands try to put point |
164 | at the same screen height as previously. */ | |
9317a85d | 165 | |
5500c422 GM |
166 | Lisp_Object Vscroll_preserve_screen_position; |
167 | ||
168 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 169 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 170 | static int inhibit_frame_unsplittable; |
5500c422 | 171 | #endif /* 0 */ |
7d601aaa | 172 | |
7ab12479 | 173 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 | 174 | |
9317a85d RS |
175 | extern int scroll_margin; |
176 | ||
dba06815 | 177 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
178 | \f |
179 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
180 | "Returns t if OBJECT is a window.") |
181 | (object) | |
182 | Lisp_Object object; | |
7ab12479 | 183 | { |
413430c5 | 184 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
185 | } |
186 | ||
806b4d9b | 187 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
188 | "Returns t if OBJECT is a window which is currently visible.") |
189 | (object) | |
190 | Lisp_Object object; | |
605be8af | 191 | { |
413430c5 | 192 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
193 | } |
194 | ||
7ab12479 JB |
195 | Lisp_Object |
196 | make_window () | |
197 | { | |
cffec418 | 198 | Lisp_Object val; |
7ab12479 | 199 | register struct window *p; |
cffec418 KH |
200 | register struct Lisp_Vector *vec; |
201 | int i; | |
202 | ||
203 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
204 | for (i = 0; i < VECSIZE (struct window); i++) | |
205 | vec->contents[i] = Qnil; | |
206 | vec->size = VECSIZE (struct window); | |
5500c422 | 207 | p = (struct window *) vec; |
d834a2e9 KH |
208 | XSETFASTINT (p->sequence_number, ++sequence_number); |
209 | XSETFASTINT (p->left, 0); | |
210 | XSETFASTINT (p->top, 0); | |
211 | XSETFASTINT (p->height, 0); | |
212 | XSETFASTINT (p->width, 0); | |
213 | XSETFASTINT (p->hscroll, 0); | |
f984d4fc | 214 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
215 | p->start = Fmake_marker (); |
216 | p->pointm = Fmake_marker (); | |
d834a2e9 | 217 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 218 | p->frame = Qnil; |
7ab12479 JB |
219 | p->display_table = Qnil; |
220 | p->dedicated = Qnil; | |
5500c422 GM |
221 | p->pseudo_window_p = 0; |
222 | bzero (&p->cursor, sizeof (p->cursor)); | |
223 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
224 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
225 | p->desired_matrix = p->current_matrix = 0; | |
226 | p->phys_cursor_type = -1; | |
227 | p->must_be_updated_p = 0; | |
228 | XSETFASTINT (p->window_end_vpos, 0); | |
229 | XSETFASTINT (p->window_end_pos, 0); | |
230 | p->window_end_valid = Qnil; | |
231 | p->vscroll = 0; | |
cffec418 | 232 | XSETWINDOW (val, p); |
5500c422 | 233 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 234 | p->frozen_window_start_p = 0; |
7ab12479 JB |
235 | return val; |
236 | } | |
237 | ||
238 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
239 | "Return the window that the cursor now appears in and commands apply to.") | |
240 | () | |
241 | { | |
242 | return selected_window; | |
243 | } | |
244 | ||
83762ba4 JB |
245 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
246 | "Return the window used now for minibuffers.\n\ | |
247 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
248 | used by that frame.") | |
249 | (frame) | |
250 | Lisp_Object frame; | |
7ab12479 | 251 | { |
83762ba4 | 252 | if (NILP (frame)) |
1ae1a37d GM |
253 | frame = selected_frame; |
254 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 | 255 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
256 | } |
257 | ||
605be8af | 258 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
259 | "Returns non-nil if WINDOW is a minibuffer window.") |
260 | (window) | |
261 | Lisp_Object window; | |
262 | { | |
263 | struct window *w = decode_window (window); | |
264 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
265 | } | |
266 | ||
267 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
268 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 269 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
270 | Returns nil if that position is scrolled vertically out of view.\n\ |
271 | POS defaults to point; WINDOW, to the selected window.") | |
272 | (pos, window) | |
273 | Lisp_Object pos, window; | |
274 | { | |
275 | register struct window *w; | |
7ab12479 JB |
276 | register int posint; |
277 | register struct buffer *buf; | |
9a132b1f GM |
278 | struct text_pos top; |
279 | Lisp_Object in_window; | |
7ab12479 | 280 | |
265a9e55 | 281 | if (NILP (pos)) |
5ce7b543 | 282 | posint = PT; |
7ab12479 JB |
283 | else |
284 | { | |
285 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
286 | posint = XINT (pos); | |
287 | } | |
288 | ||
605be8af | 289 | w = decode_window (window); |
9a132b1f | 290 | buf = XBUFFER (w->buffer); |
5500c422 | 291 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
7ab12479 | 292 | |
5500c422 GM |
293 | /* If position above window, it's not visible. */ |
294 | if (posint < CHARPOS (top)) | |
9a132b1f GM |
295 | in_window = Qnil; |
296 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
297 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) | |
298 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
299 | /* If frame is up to date, and POSINT is < window end pos, use | |
300 | that info. This doesn't work for POSINT == end pos, because | |
301 | the window end pos is actually the position _after_ the last | |
302 | char in the window. */ | |
303 | in_window = Qt; | |
304 | else if (posint > BUF_ZV (buf)) | |
305 | in_window = Qnil; | |
306 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
307 | /* If window start is out of range, do something reasonable. */ | |
308 | in_window = Qnil; | |
7ab12479 JB |
309 | else |
310 | { | |
5500c422 | 311 | struct it it; |
5500c422 GM |
312 | start_display (&it, w, top); |
313 | move_it_to (&it, posint, 0, it.last_visible_y, -1, | |
9a132b1f GM |
314 | MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y); |
315 | in_window = IT_CHARPOS (it) == posint ? Qt : Qnil; | |
7ab12479 | 316 | } |
9a132b1f GM |
317 | |
318 | return in_window; | |
7ab12479 JB |
319 | } |
320 | \f | |
321 | static struct window * | |
322 | decode_window (window) | |
323 | register Lisp_Object window; | |
324 | { | |
265a9e55 | 325 | if (NILP (window)) |
7ab12479 JB |
326 | return XWINDOW (selected_window); |
327 | ||
605be8af | 328 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
329 | return XWINDOW (window); |
330 | } | |
331 | ||
332 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
333 | "Return the buffer that WINDOW is displaying.") | |
334 | (window) | |
335 | Lisp_Object window; | |
336 | { | |
337 | return decode_window (window)->buffer; | |
338 | } | |
339 | ||
340 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
341 | "Return the number of lines in WINDOW (including its mode line).") | |
342 | (window) | |
343 | Lisp_Object window; | |
344 | { | |
345 | return decode_window (window)->height; | |
346 | } | |
347 | ||
348 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
349 | "Return the number of display columns in WINDOW.\n\ |
350 | This is the width that is usable columns available for text in WINDOW.\n\ | |
351 | If you want to find out how many columns WINDOW takes up,\n\ | |
352 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
353 | (window) |
354 | Lisp_Object window; | |
355 | { | |
ee61d94e | 356 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
357 | } |
358 | ||
359 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
360 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
361 | (window) | |
362 | Lisp_Object window; | |
363 | { | |
364 | return decode_window (window)->hscroll; | |
365 | } | |
366 | ||
367 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
368 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
369 | NCOL should be zero or positive.") | |
370 | (window, ncol) | |
371 | register Lisp_Object window, ncol; | |
372 | { | |
373 | register struct window *w; | |
374 | ||
375 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 376 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 377 | w = decode_window (window); |
7f4161e0 | 378 | if (XINT (w->hscroll) != XINT (ncol)) |
b1599b4c GM |
379 | /* Prevent redisplay shortcuts */ |
380 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7ab12479 JB |
381 | w->hscroll = ncol; |
382 | return ncol; | |
383 | } | |
384 | ||
190eb263 RS |
385 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
386 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
387 | "Return WINDOW's redisplay end trigger value.\n\ | |
388 | See `set-window-redisplay-end-trigger' for more information.") | |
389 | (window) | |
390 | Lisp_Object window; | |
391 | { | |
392 | return decode_window (window)->redisplay_end_trigger; | |
393 | } | |
394 | ||
395 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
396 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
397 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
398 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
399 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
400 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
401 | with two arguments: WINDOW, and the end trigger value.\n\ | |
402 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
403 | (window, value) |
404 | register Lisp_Object window, value; | |
405 | { | |
406 | register struct window *w; | |
407 | ||
408 | w = decode_window (window); | |
409 | w->redisplay_end_trigger = value; | |
410 | return value; | |
411 | } | |
412 | ||
7ab12479 JB |
413 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
414 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 415 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
416 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
417 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
418 | and its mode-line.") | |
419 | (window) | |
420 | Lisp_Object window; | |
421 | { | |
422 | register struct window *w = decode_window (window); | |
423 | ||
424 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 425 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
426 | Fcons (make_number (XFASTINT (w->top) |
427 | + XFASTINT (w->height)), | |
428 | Qnil)))); | |
429 | } | |
430 | ||
fbad6f9a | 431 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
432 | If it is not, return 0; |
433 | if it is in the window's text area, | |
434 | set *x and *y to its location relative to the upper left corner | |
435 | of the window, and | |
436 | return 1; | |
437 | if it is on the window's modeline, return 2; | |
438 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
439 | return 3. |
440 | if it is on the window's top line, return 4; | |
fbad6f9a GM |
441 | if it is in the bitmap area to the left/right of the window, |
442 | return 5 or 6, and convert *X and *Y to window-relative corrdinates. | |
5500c422 GM |
443 | |
444 | X and Y are frame relative pixel coordinates. */ | |
445 | ||
d5783c40 JB |
446 | static int |
447 | coordinates_in_window (w, x, y) | |
448 | register struct window *w; | |
449 | register int *x, *y; | |
450 | { | |
5500c422 GM |
451 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
452 | int left_x, right_x, top_y, bottom_y; | |
b46dfc64 | 453 | int flags_area_width = FRAME_LEFT_FLAGS_AREA_WIDTH (f); |
d5783c40 | 454 | |
5500c422 GM |
455 | if (w->pseudo_window_p) |
456 | { | |
457 | left_x = 0; | |
458 | right_x = XFASTINT (w->width) * CANON_Y_UNIT (f); | |
459 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); | |
460 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
461 | } | |
462 | else | |
463 | { | |
464 | left_x = WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w); | |
465 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w); | |
466 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); | |
467 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
468 | } | |
37962e60 | 469 | |
5500c422 GM |
470 | if (*y < top_y |
471 | || *y >= bottom_y | |
472 | || *x < (left_x | |
473 | - flags_area_width | |
474 | - (FRAME_LEFT_SCROLL_BAR_WIDTH (f) | |
475 | * CANON_X_UNIT (f))) | |
476 | || *x > right_x + flags_area_width) | |
477 | /* Completely outside anything interesting. */ | |
478 | return 0; | |
479 | else if (WINDOW_WANTS_MODELINE_P (w) | |
480 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) | |
481 | /* On the mode line. */ | |
482 | return 2; | |
045dee35 GM |
483 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
484 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) | |
5500c422 GM |
485 | /* On the top line. */ |
486 | return 4; | |
487 | else if (*x < left_x || *x >= right_x) | |
fbad6f9a GM |
488 | { |
489 | /* Other lines than the mode line don't include flags areas and | |
490 | scroll bars on the left. */ | |
491 | ||
492 | /* Convert X and Y to window-relative pixel coordinates. */ | |
493 | *x -= left_x; | |
494 | *y -= top_y; | |
495 | return *x < left_x ? 5 : 6; | |
496 | } | |
5500c422 GM |
497 | else if (!w->pseudo_window_p |
498 | && !WINDOW_RIGHTMOST_P (w) | |
499 | && *x >= right_x - CANON_X_UNIT (f)) | |
500 | /* On the border on the right side of the window? Assume that | |
501 | this area begins at RIGHT_X minus a canonical char width. */ | |
502 | return 3; | |
503 | else | |
504 | { | |
505 | /* Convert X and Y to window-relative pixel coordinates. */ | |
506 | *x -= left_x; | |
507 | *y -= top_y; | |
508 | return 1; | |
509 | } | |
d5783c40 JB |
510 | } |
511 | ||
512 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
513 | Scoordinates_in_window_p, 2, 2, 0, | |
514 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 515 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 516 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 517 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 518 | frame.\n\ |
d5783c40 JB |
519 | If COORDINATES are in the text portion of WINDOW,\n\ |
520 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 521 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
045dee35 | 522 | If they are in the top mode line of WINDOW, `header-line' is returned.\n\ |
fbad6f9a GM |
523 | If they are in the bitmap-area to the left of the window,\n\ |
524 | `left-bitmap-area' is returned, if they are in the area on the right of\n\ | |
525 | the window, `right-bitmap-area' is returned.\n\ | |
d5783c40 | 526 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 527 | `vertical-line' is returned.") |
d5783c40 JB |
528 | (coordinates, window) |
529 | register Lisp_Object coordinates, window; | |
530 | { | |
5500c422 GM |
531 | struct window *w; |
532 | struct frame *f; | |
d5783c40 | 533 | int x, y; |
5500c422 | 534 | Lisp_Object lx, ly; |
d5783c40 | 535 | |
605be8af | 536 | CHECK_LIVE_WINDOW (window, 0); |
5500c422 GM |
537 | w = XWINDOW (window); |
538 | f = XFRAME (w->frame); | |
d5783c40 | 539 | CHECK_CONS (coordinates, 1); |
5500c422 GM |
540 | lx = Fcar (coordinates); |
541 | ly = Fcdr (coordinates); | |
542 | CHECK_NUMBER_OR_FLOAT (lx, 1); | |
543 | CHECK_NUMBER_OR_FLOAT (ly, 1); | |
544 | x = PIXEL_X_FROM_CANON_X (f, lx); | |
545 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
546 | ||
547 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 JB |
548 | { |
549 | case 0: /* NOT in window at all. */ | |
550 | return Qnil; | |
551 | ||
552 | case 1: /* In text part of window. */ | |
5500c422 GM |
553 | /* X and Y are now window relative pixel coordinates. |
554 | Convert them to canonical char units before returning | |
555 | them. */ | |
556 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), | |
557 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 JB |
558 | |
559 | case 2: /* In mode line of window. */ | |
560 | return Qmode_line; | |
37962e60 | 561 | |
d5783c40 | 562 | case 3: /* On right border of window. */ |
e5d77022 | 563 | return Qvertical_line; |
d5783c40 | 564 | |
5500c422 | 565 | case 4: |
045dee35 | 566 | return Qheader_line; |
5500c422 | 567 | |
fbad6f9a GM |
568 | case 5: |
569 | return Qleft_bitmap_area; | |
570 | ||
571 | case 6: | |
572 | return Qright_bitmap_area; | |
573 | ||
d5783c40 JB |
574 | default: |
575 | abort (); | |
576 | } | |
577 | } | |
578 | ||
5500c422 GM |
579 | /* Find the window containing frame-relative pixel position X/Y and |
580 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
581 | set *PART to 1; if it is on the separating line between the window | |
582 | and its right sibling, set it to 2; otherwise set it to 0. If | |
583 | there is no window under X, Y return nil and leave *PART | |
9ea173e8 | 584 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. */ |
5500c422 | 585 | |
7ab12479 | 586 | Lisp_Object |
9ea173e8 | 587 | window_from_coordinates (frame, x, y, part, tool_bar_p) |
44fa5b1e | 588 | FRAME_PTR frame; |
7ab12479 | 589 | int x, y; |
d5783c40 | 590 | int *part; |
9ea173e8 | 591 | int tool_bar_p; |
7ab12479 JB |
592 | { |
593 | register Lisp_Object tem, first; | |
5500c422 | 594 | int found; |
7ab12479 | 595 | |
44fa5b1e | 596 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 597 | |
d5783c40 | 598 | do |
7ab12479 | 599 | { |
5500c422 | 600 | found = coordinates_in_window (XWINDOW (tem), &x, &y); |
7ab12479 JB |
601 | |
602 | if (found) | |
603 | { | |
d5783c40 | 604 | *part = found - 1; |
7ab12479 JB |
605 | return tem; |
606 | } | |
607 | ||
d5783c40 | 608 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 609 | } |
5500c422 GM |
610 | while (!EQ (tem, first)); |
611 | ||
9ea173e8 GM |
612 | /* See if it's in the tool bar window, if a tool bar exists. */ |
613 | if (tool_bar_p | |
614 | && WINDOWP (frame->tool_bar_window) | |
615 | && XFASTINT (XWINDOW (frame->tool_bar_window)->height) | |
616 | && coordinates_in_window (XWINDOW (frame->tool_bar_window), &x, &y)) | |
5500c422 GM |
617 | { |
618 | *part = 0; | |
9ea173e8 | 619 | return frame->tool_bar_window; |
5500c422 | 620 | } |
37962e60 | 621 | |
d5783c40 | 622 | return Qnil; |
7ab12479 JB |
623 | } |
624 | ||
ab17c3f2 | 625 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 626 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
627 | If omitted, FRAME defaults to the currently selected frame.\n\ |
628 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 629 | column 0.") |
b0c33a94 RS |
630 | (x, y, frame) |
631 | Lisp_Object x, y, frame; | |
7ab12479 JB |
632 | { |
633 | int part; | |
5500c422 | 634 | struct frame *f; |
7ab12479 | 635 | |
44fa5b1e | 636 | if (NILP (frame)) |
1ae1a37d GM |
637 | frame = selected_frame; |
638 | CHECK_LIVE_FRAME (frame, 2); | |
5500c422 | 639 | f = XFRAME (frame); |
7ab12479 | 640 | |
5500c422 GM |
641 | /* Check that arguments are integers or floats. */ |
642 | CHECK_NUMBER_OR_FLOAT (x, 0); | |
643 | CHECK_NUMBER_OR_FLOAT (y, 1); | |
644 | ||
645 | return window_from_coordinates (f, | |
646 | PIXEL_X_FROM_CANON_X (f, x), | |
647 | PIXEL_Y_FROM_CANON_Y (f, y), | |
648 | &part, 0); | |
7ab12479 JB |
649 | } |
650 | ||
651 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
652 | "Return current value of point in WINDOW.\n\ | |
653 | For a nonselected window, this is the value point would have\n\ | |
654 | if that window were selected.\n\ | |
655 | \n\ | |
656 | Note that, when WINDOW is the selected window and its buffer\n\ | |
657 | is also currently selected, the value returned is the same as (point).\n\ | |
658 | It would be more strictly correct to return the `top-level' value\n\ | |
659 | of point, outside of any save-excursion forms.\n\ | |
660 | But that is hard to define.") | |
661 | (window) | |
662 | Lisp_Object window; | |
663 | { | |
664 | register struct window *w = decode_window (window); | |
665 | ||
666 | if (w == XWINDOW (selected_window) | |
667 | && current_buffer == XBUFFER (w->buffer)) | |
668 | return Fpoint (); | |
669 | return Fmarker_position (w->pointm); | |
670 | } | |
671 | ||
672 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
673 | "Return position at which display currently starts in WINDOW.\n\ |
674 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
675 | (window) |
676 | Lisp_Object window; | |
677 | { | |
678 | return Fmarker_position (decode_window (window)->start); | |
679 | } | |
680 | ||
8646118f RS |
681 | /* This is text temporarily removed from the doc string below. |
682 | ||
7250968e RS |
683 | This function returns nil if the position is not currently known.\n\ |
684 | That happens when redisplay is preempted and doesn't finish.\n\ | |
685 | If in that case you want to compute where the end of the window would\n\ | |
686 | have been if redisplay had finished, do this:\n\ | |
687 | (save-excursion\n\ | |
688 | (goto-char (window-start window))\n\ | |
689 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
690 | (point))") */ |
691 | ||
478292ed | 692 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
8646118f RS |
693 | "Return position at which display currently ends in WINDOW.\n\ |
694 | This is updated by redisplay, when it runs to completion.\n\ | |
695 | Simply changing the buffer text or setting `window-start'\n\ | |
478292ed RS |
696 | does not update this value.\n\ |
697 | If UP-TO-DATE is non-nil, compute the up-to-date position\n\ | |
698 | if it isn't already recorded.") | |
699 | (window, update) | |
700 | Lisp_Object window, update; | |
7ab12479 JB |
701 | { |
702 | Lisp_Object value; | |
703 | struct window *w = decode_window (window); | |
5a41ab94 RS |
704 | Lisp_Object buf; |
705 | ||
706 | buf = w->buffer; | |
707 | CHECK_BUFFER (buf, 0); | |
708 | ||
8646118f | 709 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
710 | /* If we don't know the end position, return nil. |
711 | The user can compute it with vertical-motion if he wants to. | |
712 | It would be nicer to do it automatically, | |
713 | but that's so slow that it would probably bother people. */ | |
714 | if (NILP (w->window_end_valid)) | |
715 | return Qnil; | |
8646118f | 716 | #endif |
7250968e | 717 | |
478292ed RS |
718 | if (! NILP (update) |
719 | && ! (! NILP (w->window_end_valid) | |
720 | && XFASTINT (w->last_modified) >= MODIFF)) | |
721 | { | |
722 | int opoint = PT, opoint_byte = PT_BYTE; | |
2d6d9df0 GM |
723 | |
724 | /* In case W->start is out of the range, use something | |
725 | reasonable. This situation occured when loading a file with | |
726 | `-l' containing a call to `rmail' with subsequent other | |
727 | commands. At the end, W->start happened to be BEG, while | |
728 | rmail had already narrowed the buffer. This leads to an | |
729 | abort in temp_set_pt_both. */ | |
730 | if (XMARKER (w->start)->charpos < BEGV) | |
731 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
732 | else if (XMARKER (w->start)->charpos > ZV) | |
733 | TEMP_SET_PT_BOTH (ZV, ZV_BYTE); | |
734 | else | |
735 | TEMP_SET_PT_BOTH (XMARKER (w->start)->charpos, | |
736 | XMARKER (w->start)->bytepos); | |
737 | ||
478292ed RS |
738 | Fvertical_motion (make_number (window_internal_height (w)), Qnil); |
739 | XSETINT (value, PT); | |
740 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
741 | } | |
742 | else | |
743 | XSETINT (value, | |
744 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
745 | |
746 | return value; | |
747 | } | |
748 | ||
749 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
750 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
751 | (window, pos) | |
752 | Lisp_Object window, pos; | |
753 | { | |
754 | register struct window *w = decode_window (window); | |
755 | ||
756 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
e90c4fe6 RS |
757 | if (w == XWINDOW (selected_window) |
758 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
759 | Fgoto_char (pos); |
760 | else | |
761 | set_marker_restricted (w->pointm, pos, w->buffer); | |
ce7fae7d | 762 | |
7ab12479 JB |
763 | return pos; |
764 | } | |
765 | ||
766 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
767 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
768 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
769 | from overriding motion of point in order to display at this exact start.") | |
770 | (window, pos, noforce) | |
771 | Lisp_Object window, pos, noforce; | |
772 | { | |
773 | register struct window *w = decode_window (window); | |
774 | ||
775 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
776 | set_marker_restricted (w->start, pos, w->buffer); | |
777 | /* this is not right, but much easier than doing what is right. */ | |
778 | w->start_at_line_beg = Qnil; | |
265a9e55 | 779 | if (NILP (noforce)) |
7ab12479 JB |
780 | w->force_start = Qt; |
781 | w->update_mode_line = Qt; | |
d834a2e9 | 782 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 783 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
784 | if (!EQ (window, selected_window)) |
785 | windows_or_buffers_changed++; | |
ce7fae7d | 786 | |
7ab12479 JB |
787 | return pos; |
788 | } | |
789 | ||
790 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
791 | 1, 1, 0, | |
792 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 793 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
794 | (window) |
795 | Lisp_Object window; | |
796 | { | |
797 | return decode_window (window)->dedicated; | |
798 | } | |
799 | ||
d207b766 RS |
800 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
801 | Sset_window_dedicated_p, 2, 2, 0, | |
802 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
803 | If it is dedicated, Emacs will not automatically change\n\ | |
804 | which buffer appears in it.\n\ | |
805 | The second argument is the new value for the dedication flag;\n\ | |
806 | non-nil means yes.") | |
7ab12479 JB |
807 | (window, arg) |
808 | Lisp_Object window, arg; | |
809 | { | |
810 | register struct window *w = decode_window (window); | |
811 | ||
265a9e55 | 812 | if (NILP (arg)) |
7ab12479 JB |
813 | w->dedicated = Qnil; |
814 | else | |
d207b766 | 815 | w->dedicated = Qt; |
7ab12479 JB |
816 | |
817 | return w->dedicated; | |
818 | } | |
819 | ||
820 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
821 | 0, 1, 0, | |
822 | "Return the display-table that WINDOW is using.") | |
823 | (window) | |
824 | Lisp_Object window; | |
825 | { | |
826 | return decode_window (window)->display_table; | |
827 | } | |
828 | ||
5500c422 GM |
829 | /* Get the display table for use on window W. This is either W's |
830 | display table or W's buffer's display table. Ignore the specified | |
831 | tables if they are not valid; if no valid table is specified, | |
832 | return 0. */ | |
7ab12479 | 833 | |
319315f1 | 834 | struct Lisp_Char_Table * |
7ab12479 JB |
835 | window_display_table (w) |
836 | struct window *w; | |
837 | { | |
838 | Lisp_Object tem; | |
839 | tem = w->display_table; | |
319315f1 RS |
840 | if (DISP_TABLE_P (tem)) |
841 | return XCHAR_TABLE (tem); | |
171d003c RS |
842 | if (NILP (w->buffer)) |
843 | return 0; | |
844 | ||
7ab12479 | 845 | tem = XBUFFER (w->buffer)->display_table; |
319315f1 RS |
846 | if (DISP_TABLE_P (tem)) |
847 | return XCHAR_TABLE (tem); | |
7ab12479 | 848 | tem = Vstandard_display_table; |
319315f1 RS |
849 | if (DISP_TABLE_P (tem)) |
850 | return XCHAR_TABLE (tem); | |
7ab12479 JB |
851 | return 0; |
852 | } | |
853 | ||
3a2712f9 | 854 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
855 | "Set WINDOW's display-table to TABLE.") |
856 | (window, table) | |
857 | register Lisp_Object window, table; | |
858 | { | |
859 | register struct window *w; | |
7ab12479 JB |
860 | |
861 | w = decode_window (window); | |
862 | w->display_table = table; | |
863 | return table; | |
864 | } | |
865 | \f | |
866 | /* Record info on buffer window w is displaying | |
867 | when it is about to cease to display that buffer. */ | |
dfcf069d | 868 | static void |
7ab12479 JB |
869 | unshow_buffer (w) |
870 | register struct window *w; | |
871 | { | |
12cae7c0 | 872 | Lisp_Object buf; |
b73ea88e | 873 | struct buffer *b; |
7ab12479 | 874 | |
12cae7c0 | 875 | buf = w->buffer; |
b73ea88e RS |
876 | b = XBUFFER (buf); |
877 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
878 | abort (); |
879 | ||
b73ea88e RS |
880 | if (w == XWINDOW (b->last_selected_window)) |
881 | b->last_selected_window = Qnil; | |
86e48436 | 882 | |
573f41ab | 883 | #if 0 |
7ab12479 JB |
884 | if (w == XWINDOW (selected_window) |
885 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
886 | /* Do this except when the selected window's buffer | |
887 | is being removed from some other window. */ | |
573f41ab RS |
888 | #endif |
889 | /* last_window_start records the start position that this buffer | |
890 | had in the last window to be disconnected from it. | |
891 | Now that this statement is unconditional, | |
892 | it is possible for the buffer to be displayed in the | |
893 | selected window, while last_window_start reflects another | |
894 | window which was recently showing the same buffer. | |
895 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 896 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
897 | |
898 | /* Point in the selected window's buffer | |
899 | is actually stored in that buffer, and the window's pointm isn't used. | |
900 | So don't clobber point in that buffer. */ | |
901 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
b73ea88e RS |
902 | temp_set_point_both (b, |
903 | clip_to_bounds (BUF_BEGV (b), | |
904 | XMARKER (w->pointm)->charpos, | |
905 | BUF_ZV (b)), | |
906 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
907 | marker_byte_position (w->pointm), | |
908 | BUF_ZV_BYTE (b))); | |
7ab12479 JB |
909 | } |
910 | ||
911 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 912 | static void |
7ab12479 JB |
913 | replace_window (old, replacement) |
914 | Lisp_Object old, replacement; | |
915 | { | |
916 | register Lisp_Object tem; | |
917 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
918 | ||
44fa5b1e JB |
919 | /* If OLD is its frame's root_window, then replacement is the new |
920 | root_window for that frame. */ | |
7ab12479 | 921 | |
7f4161e0 | 922 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 923 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
924 | |
925 | p->left = o->left; | |
926 | p->top = o->top; | |
927 | p->width = o->width; | |
928 | p->height = o->height; | |
5500c422 GM |
929 | p->desired_matrix = p->current_matrix = 0; |
930 | p->vscroll = 0; | |
931 | bzero (&p->cursor, sizeof (p->cursor)); | |
932 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
933 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
934 | p->phys_cursor_type = -1; | |
935 | p->must_be_updated_p = 0; | |
936 | p->pseudo_window_p = 0; | |
937 | XSETFASTINT (p->window_end_vpos, 0); | |
938 | XSETFASTINT (p->window_end_pos, 0); | |
939 | p->window_end_valid = Qnil; | |
7bbb5782 | 940 | p->frozen_window_start_p = 0; |
f984d4fc | 941 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
942 | |
943 | p->next = tem = o->next; | |
265a9e55 | 944 | if (!NILP (tem)) |
7ab12479 JB |
945 | XWINDOW (tem)->prev = replacement; |
946 | ||
947 | p->prev = tem = o->prev; | |
265a9e55 | 948 | if (!NILP (tem)) |
7ab12479 JB |
949 | XWINDOW (tem)->next = replacement; |
950 | ||
951 | p->parent = tem = o->parent; | |
265a9e55 | 952 | if (!NILP (tem)) |
7ab12479 JB |
953 | { |
954 | if (EQ (XWINDOW (tem)->vchild, old)) | |
955 | XWINDOW (tem)->vchild = replacement; | |
956 | if (EQ (XWINDOW (tem)->hchild, old)) | |
957 | XWINDOW (tem)->hchild = replacement; | |
958 | } | |
959 | ||
960 | /*** Here, if replacement is a vertical combination | |
961 | and so is its new parent, we should make replacement's | |
962 | children be children of that parent instead. ***/ | |
963 | } | |
964 | ||
965 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
966 | "Remove WINDOW from the display. Default is selected window.") | |
967 | (window) | |
968 | register Lisp_Object window; | |
543f5fb1 RS |
969 | { |
970 | delete_window (window); | |
971 | ||
972 | if (! NILP (Vwindow_configuration_change_hook) | |
973 | && ! NILP (Vrun_hooks)) | |
974 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
975 | ||
976 | return Qnil; | |
977 | } | |
978 | ||
5e14b1fc | 979 | void |
543f5fb1 RS |
980 | delete_window (window) |
981 | register Lisp_Object window; | |
7ab12479 JB |
982 | { |
983 | register Lisp_Object tem, parent, sib; | |
984 | register struct window *p; | |
985 | register struct window *par; | |
5500c422 | 986 | FRAME_PTR frame; |
7ab12479 | 987 | |
605be8af JB |
988 | /* Because this function is called by other C code on non-leaf |
989 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
990 | so we can't decode_window here. */ | |
265a9e55 | 991 | if (NILP (window)) |
7ab12479 JB |
992 | window = selected_window; |
993 | else | |
994 | CHECK_WINDOW (window, 0); | |
7ab12479 | 995 | p = XWINDOW (window); |
605be8af JB |
996 | |
997 | /* It's okay to delete an already-deleted window. */ | |
998 | if (NILP (p->buffer) | |
999 | && NILP (p->hchild) | |
1000 | && NILP (p->vchild)) | |
296b535c | 1001 | return; |
605be8af | 1002 | |
7ab12479 | 1003 | parent = p->parent; |
265a9e55 | 1004 | if (NILP (parent)) |
7ab12479 JB |
1005 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1006 | par = XWINDOW (parent); | |
1007 | ||
1008 | windows_or_buffers_changed++; | |
5500c422 GM |
1009 | frame = XFRAME (WINDOW_FRAME (p)); |
1010 | FRAME_WINDOW_SIZES_CHANGED (frame) = 1; | |
7ab12479 | 1011 | |
605be8af JB |
1012 | /* Are we trying to delete any frame's selected window? */ |
1013 | { | |
0def0403 | 1014 | Lisp_Object frame, pwindow; |
605be8af | 1015 | |
0def0403 RS |
1016 | /* See if the frame's selected window is either WINDOW |
1017 | or any subwindow of it, by finding all that window's parents | |
1018 | and comparing each one with WINDOW. */ | |
1019 | frame = WINDOW_FRAME (XWINDOW (window)); | |
1020 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
1021 | ||
1022 | while (!NILP (pwindow)) | |
1023 | { | |
1024 | if (EQ (window, pwindow)) | |
1025 | break; | |
1026 | pwindow = XWINDOW (pwindow)->parent; | |
1027 | } | |
1028 | ||
1029 | if (EQ (window, pwindow)) | |
605be8af | 1030 | { |
89bca612 RS |
1031 | Lisp_Object alternative; |
1032 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
1033 | |
1034 | /* If we're about to delete the selected window on the | |
1035 | selected frame, then we should use Fselect_window to select | |
1036 | the new window. On the other hand, if we're about to | |
1037 | delete the selected window on any other frame, we shouldn't do | |
1038 | anything but set the frame's selected_window slot. */ | |
1039 | if (EQ (window, selected_window)) | |
1040 | Fselect_window (alternative); | |
1041 | else | |
0def0403 | 1042 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
1043 | } |
1044 | } | |
7ab12479 JB |
1045 | |
1046 | tem = p->buffer; | |
1047 | /* tem is null for dummy parent windows | |
1048 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1049 | if (!NILP (tem)) |
7ab12479 JB |
1050 | { |
1051 | unshow_buffer (p); | |
1052 | unchain_marker (p->pointm); | |
1053 | unchain_marker (p->start); | |
7ab12479 JB |
1054 | } |
1055 | ||
5500c422 GM |
1056 | /* Free window glyph matrices. |
1057 | It is sure that they are allocated again when ADJUST_GLYPHS | |
1058 | is called. */ | |
1059 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (frame))); | |
1060 | ||
7ab12479 | 1061 | tem = p->next; |
265a9e55 | 1062 | if (!NILP (tem)) |
7ab12479 JB |
1063 | XWINDOW (tem)->prev = p->prev; |
1064 | ||
1065 | tem = p->prev; | |
265a9e55 | 1066 | if (!NILP (tem)) |
7ab12479 JB |
1067 | XWINDOW (tem)->next = p->next; |
1068 | ||
1069 | if (EQ (window, par->hchild)) | |
1070 | par->hchild = p->next; | |
1071 | if (EQ (window, par->vchild)) | |
1072 | par->vchild = p->next; | |
1073 | ||
1074 | /* Find one of our siblings to give our space to. */ | |
1075 | sib = p->prev; | |
265a9e55 | 1076 | if (NILP (sib)) |
7ab12479 JB |
1077 | { |
1078 | /* If p gives its space to its next sibling, that sibling needs | |
1079 | to have its top/left side pulled back to where p's is. | |
1080 | set_window_{height,width} will re-position the sibling's | |
1081 | children. */ | |
1082 | sib = p->next; | |
7f4161e0 JB |
1083 | XWINDOW (sib)->top = p->top; |
1084 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1085 | } |
1086 | ||
1087 | /* Stretch that sibling. */ | |
265a9e55 | 1088 | if (!NILP (par->vchild)) |
7ab12479 JB |
1089 | set_window_height (sib, |
1090 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1091 | 1); | |
265a9e55 | 1092 | if (!NILP (par->hchild)) |
7ab12479 JB |
1093 | set_window_width (sib, |
1094 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1095 | 1); | |
1096 | ||
1097 | /* If parent now has only one child, | |
1098 | put the child into the parent's place. */ | |
7ab12479 | 1099 | tem = par->hchild; |
265a9e55 | 1100 | if (NILP (tem)) |
7ab12479 | 1101 | tem = par->vchild; |
265a9e55 | 1102 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1103 | replace_window (parent, tem); |
605be8af JB |
1104 | |
1105 | /* Since we may be deleting combination windows, we must make sure that | |
1106 | not only p but all its children have been marked as deleted. */ | |
1107 | if (! NILP (p->hchild)) | |
1108 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1109 | else if (! NILP (p->vchild)) | |
1110 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1111 | ||
1112 | /* Mark this window as deleted. */ | |
1113 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1114 | |
1115 | /* Adjust glyph matrices. */ | |
1116 | adjust_glyphs (frame); | |
7ab12479 JB |
1117 | } |
1118 | \f | |
7ab12479 | 1119 | |
44fa5b1e | 1120 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 1121 | |
26f6279d JB |
1122 | /* This comment supplies the doc string for `next-window', |
1123 | for make-docfile to see. We cannot put this in the real DEFUN | |
1124 | due to limits in the Unix cpp. | |
1125 | ||
1126 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 1127 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1128 | If omitted, WINDOW defaults to the selected window.\n\ |
1129 | \n\ | |
1130 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1131 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1132 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1133 | minibuffer even if it is active.\n\ | |
1134 | \n\ | |
44fa5b1e JB |
1135 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1136 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1137 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
1138 | set of windows even when the minibuffer is on another frame. If the\n\ |
1139 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 1140 | \n\ |
44fa5b1e JB |
1141 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1142 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1143 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1144 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1145 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1146 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1147 | \n\ |
1148 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1149 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
1150 | windows, eventually ending up back at the window you started with.\n\ | |
1151 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1152 | (window, minibuf, all_frames) */ |
1153 | ||
1154 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
1155 | 0) | |
44fa5b1e JB |
1156 | (window, minibuf, all_frames) |
1157 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1158 | { |
1159 | register Lisp_Object tem; | |
d5783c40 | 1160 | Lisp_Object start_window; |
7ab12479 | 1161 | |
265a9e55 | 1162 | if (NILP (window)) |
7ab12479 JB |
1163 | window = selected_window; |
1164 | else | |
605be8af | 1165 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1166 | |
d5783c40 JB |
1167 | start_window = window; |
1168 | ||
1169 | /* minibuf == nil may or may not include minibuffers. | |
1170 | Decide if it does. */ | |
265a9e55 | 1171 | if (NILP (minibuf)) |
fbdc1545 RS |
1172 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1173 | else if (! EQ (minibuf, Qt)) | |
1174 | minibuf = Qlambda; | |
1175 | /* Now minibuf can be t => count all minibuffer windows, | |
1176 | lambda => count none of them, | |
1177 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1178 | |
1bb80f72 | 1179 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e | 1180 | if (NILP (all_frames)) |
fbdc1545 | 1181 | all_frames = (! EQ (minibuf, Qlambda) |
1bb80f72 RS |
1182 | ? (FRAME_MINIBUF_WINDOW |
1183 | (XFRAME | |
1184 | (WINDOW_FRAME | |
1185 | (XWINDOW (window))))) | |
1186 | : Qnil); | |
89bca612 RS |
1187 | else if (EQ (all_frames, Qvisible)) |
1188 | ; | |
f812f9c6 RS |
1189 | else if (XFASTINT (all_frames) == 0) |
1190 | ; | |
1f4c5d09 RS |
1191 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1192 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1193 | return the first window on the frame. */ | |
1194 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1195 | else if (! EQ (all_frames, Qt)) |
1196 | all_frames = Qnil; | |
644b477c RS |
1197 | /* Now all_frames is t meaning search all frames, |
1198 | nil meaning search just current frame, | |
f812f9c6 RS |
1199 | visible meaning search just visible frames, |
1200 | 0 meaning search visible and iconified frames, | |
644b477c | 1201 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1202 | |
1203 | /* Do this loop at least once, to get the next window, and perhaps | |
1204 | again, if we hit the minibuffer and that is not acceptable. */ | |
1205 | do | |
1206 | { | |
1207 | /* Find a window that actually has a next one. This loop | |
1208 | climbs up the tree. */ | |
265a9e55 JB |
1209 | while (tem = XWINDOW (window)->next, NILP (tem)) |
1210 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1211 | window = tem; |
d5783c40 | 1212 | else |
7ab12479 | 1213 | { |
44fa5b1e JB |
1214 | /* We've reached the end of this frame. |
1215 | Which other frames are acceptable? */ | |
1216 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1217 | if (! NILP (all_frames)) |
1bb80f72 RS |
1218 | { |
1219 | Lisp_Object tem1; | |
1220 | ||
1221 | tem1 = tem; | |
1222 | tem = next_frame (tem, all_frames); | |
1223 | /* In the case where the minibuffer is active, | |
1224 | and we include its frame as well as the selected one, | |
1225 | next_frame may get stuck in that frame. | |
1226 | If that happens, go back to the selected frame | |
1227 | so we can complete the cycle. */ | |
1228 | if (EQ (tem, tem1)) | |
1ae1a37d | 1229 | tem = selected_frame; |
1bb80f72 | 1230 | } |
44fa5b1e | 1231 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1232 | |
7ab12479 JB |
1233 | break; |
1234 | } | |
1235 | ||
1236 | window = tem; | |
d5783c40 | 1237 | |
7ab12479 JB |
1238 | /* If we're in a combination window, find its first child and |
1239 | recurse on that. Otherwise, we've found the window we want. */ | |
1240 | while (1) | |
1241 | { | |
265a9e55 | 1242 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1243 | window = XWINDOW (window)->hchild; |
265a9e55 | 1244 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1245 | window = XWINDOW (window)->vchild; |
1246 | else break; | |
1247 | } | |
2a3d7146 GM |
1248 | |
1249 | QUIT; | |
7ab12479 | 1250 | } |
5c4d25a6 | 1251 | /* Which windows are acceptable? |
d5783c40 | 1252 | Exit the loop and accept this window if |
fbdc1545 RS |
1253 | this isn't a minibuffer window, |
1254 | or we're accepting all minibuffer windows, | |
1255 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1256 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1257 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1258 | && ! EQ (minibuf, Qt) |
fbdc1545 | 1259 | && ! EQ (minibuf, window) |
7f4161e0 | 1260 | && ! EQ (window, start_window)); |
7ab12479 JB |
1261 | |
1262 | return window; | |
1263 | } | |
1264 | ||
26f6279d JB |
1265 | /* This comment supplies the doc string for `previous-window', |
1266 | for make-docfile to see. We cannot put this in the real DEFUN | |
1267 | due to limits in the Unix cpp. | |
1268 | ||
1269 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1270 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1271 | If omitted, WINDOW defaults to the selected window.\n\ |
1272 | \n\ | |
1273 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1274 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1275 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1276 | minibuffer even if it is active.\n\ | |
1277 | \n\ | |
44fa5b1e JB |
1278 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1279 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1280 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1281 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1282 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1283 | \n\ |
44fa5b1e JB |
1284 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1285 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1286 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1287 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1288 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1289 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1290 | \n\ |
1291 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1292 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1293 | windows, eventually ending up back at the window you started with.\n\ | |
1294 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1295 | (window, minibuf, all_frames) */ |
1296 | ||
1297 | ||
1298 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1299 | 0) | |
44fa5b1e JB |
1300 | (window, minibuf, all_frames) |
1301 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1302 | { |
1303 | register Lisp_Object tem; | |
d5783c40 | 1304 | Lisp_Object start_window; |
7ab12479 | 1305 | |
265a9e55 | 1306 | if (NILP (window)) |
7ab12479 JB |
1307 | window = selected_window; |
1308 | else | |
605be8af | 1309 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1310 | |
d5783c40 JB |
1311 | start_window = window; |
1312 | ||
1313 | /* minibuf == nil may or may not include minibuffers. | |
1314 | Decide if it does. */ | |
265a9e55 | 1315 | if (NILP (minibuf)) |
fbdc1545 RS |
1316 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1317 | else if (! EQ (minibuf, Qt)) | |
1318 | minibuf = Qlambda; | |
1319 | /* Now minibuf can be t => count all minibuffer windows, | |
1320 | lambda => count none of them, | |
1321 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1322 | |
44fa5b1e JB |
1323 | /* all_frames == nil doesn't specify which frames to include. |
1324 | Decide which frames it includes. */ | |
1325 | if (NILP (all_frames)) | |
fbdc1545 | 1326 | all_frames = (! EQ (minibuf, Qlambda) |
44fa5b1e JB |
1327 | ? (FRAME_MINIBUF_WINDOW |
1328 | (XFRAME | |
1329 | (WINDOW_FRAME | |
d5783c40 JB |
1330 | (XWINDOW (window))))) |
1331 | : Qnil); | |
89bca612 RS |
1332 | else if (EQ (all_frames, Qvisible)) |
1333 | ; | |
f812f9c6 RS |
1334 | else if (XFASTINT (all_frames) == 0) |
1335 | ; | |
1f4c5d09 RS |
1336 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1337 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1338 | return the first window on the frame. */ | |
1339 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1340 | else if (! EQ (all_frames, Qt)) |
1341 | all_frames = Qnil; | |
644b477c RS |
1342 | /* Now all_frames is t meaning search all frames, |
1343 | nil meaning search just current frame, | |
f812f9c6 RS |
1344 | visible meaning search just visible frames, |
1345 | 0 meaning search visible and iconified frames, | |
644b477c | 1346 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1347 | |
1348 | /* Do this loop at least once, to get the previous window, and perhaps | |
1349 | again, if we hit the minibuffer and that is not acceptable. */ | |
1350 | do | |
1351 | { | |
1352 | /* Find a window that actually has a previous one. This loop | |
1353 | climbs up the tree. */ | |
265a9e55 JB |
1354 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1355 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1356 | window = tem; |
d5783c40 | 1357 | else |
7ab12479 | 1358 | { |
44fa5b1e JB |
1359 | /* We have found the top window on the frame. |
1360 | Which frames are acceptable? */ | |
1361 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1362 | if (! NILP (all_frames)) |
dbc4e1c1 JB |
1363 | /* It's actually important that we use prev_frame here, |
1364 | rather than next_frame. All the windows acceptable | |
1365 | according to the given parameters should form a ring; | |
1366 | Fnext_window and Fprevious_window should go back and | |
1367 | forth around the ring. If we use next_frame here, | |
1368 | then Fnext_window and Fprevious_window take different | |
1369 | paths through the set of acceptable windows. | |
1370 | window_loop assumes that these `ring' requirement are | |
1371 | met. */ | |
1bb80f72 RS |
1372 | { |
1373 | Lisp_Object tem1; | |
1374 | ||
1375 | tem1 = tem; | |
1376 | tem = prev_frame (tem, all_frames); | |
1377 | /* In the case where the minibuffer is active, | |
1378 | and we include its frame as well as the selected one, | |
1379 | next_frame may get stuck in that frame. | |
1380 | If that happens, go back to the selected frame | |
1381 | so we can complete the cycle. */ | |
1382 | if (EQ (tem, tem1)) | |
1ae1a37d | 1383 | tem = selected_frame; |
1bb80f72 | 1384 | } |
644b477c RS |
1385 | /* If this frame has a minibuffer, find that window first, |
1386 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1387 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1388 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1389 | else | |
644b477c | 1390 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1391 | |
7ab12479 JB |
1392 | break; |
1393 | } | |
1394 | ||
1395 | window = tem; | |
1396 | /* If we're in a combination window, find its last child and | |
1397 | recurse on that. Otherwise, we've found the window we want. */ | |
1398 | while (1) | |
1399 | { | |
265a9e55 | 1400 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1401 | window = XWINDOW (window)->hchild; |
265a9e55 | 1402 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1403 | window = XWINDOW (window)->vchild; |
1404 | else break; | |
265a9e55 | 1405 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1406 | window = tem; |
1407 | } | |
1408 | } | |
5c4d25a6 | 1409 | /* Which windows are acceptable? |
d5783c40 | 1410 | Exit the loop and accept this window if |
fbdc1545 RS |
1411 | this isn't a minibuffer window, |
1412 | or we're accepting all minibuffer windows, | |
1413 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1414 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1415 | while (MINI_WINDOW_P (XWINDOW (window)) |
fbdc1545 RS |
1416 | && ! EQ (minibuf, Qt) |
1417 | && ! EQ (minibuf, window) | |
1418 | && ! EQ (window, start_window)); | |
7ab12479 JB |
1419 | |
1420 | return window; | |
1421 | } | |
1422 | ||
62c07cc7 | 1423 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1424 | "Select the ARG'th different window on this frame.\n\ |
1425 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1426 | This command selects the window ARG steps away in that order.\n\ |
1427 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1428 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 EN |
1429 | (arg, all_frames) |
1430 | register Lisp_Object arg, all_frames; | |
7ab12479 JB |
1431 | { |
1432 | register int i; | |
1433 | register Lisp_Object w; | |
1434 | ||
413430c5 | 1435 | CHECK_NUMBER (arg, 0); |
7ab12479 | 1436 | w = selected_window; |
413430c5 | 1437 | i = XINT (arg); |
7ab12479 JB |
1438 | |
1439 | while (i > 0) | |
1440 | { | |
44fa5b1e | 1441 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1442 | i--; |
1443 | } | |
1444 | while (i < 0) | |
1445 | { | |
44fa5b1e | 1446 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1447 | i++; |
1448 | } | |
1449 | Fselect_window (w); | |
1450 | return Qnil; | |
1451 | } | |
1452 | \f | |
1453 | /* Look at all windows, performing an operation specified by TYPE | |
1454 | with argument OBJ. | |
75d8f668 | 1455 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1456 | Qnil, look at just the selected frame; |
89bca612 | 1457 | Qvisible, look at visible frames; |
75d8f668 | 1458 | a frame, just look at windows on that frame. |
7ab12479 JB |
1459 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1460 | */ | |
1461 | ||
1462 | enum window_loop | |
1463 | { | |
1464 | WINDOW_LOOP_UNUSED, | |
1465 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1466 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1467 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1468 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1469 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1470 | UNSHOW_BUFFER, /* Arg is buffer */ |
1471 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1472 | }; |
1473 | ||
1474 | static Lisp_Object | |
44fa5b1e | 1475 | window_loop (type, obj, mini, frames) |
7ab12479 | 1476 | enum window_loop type; |
44fa5b1e | 1477 | register Lisp_Object obj, frames; |
7ab12479 JB |
1478 | int mini; |
1479 | { | |
1480 | register Lisp_Object w; | |
1481 | register Lisp_Object best_window; | |
1482 | register Lisp_Object next_window; | |
4b206065 | 1483 | register Lisp_Object last_window; |
44fa5b1e | 1484 | FRAME_PTR frame; |
89bca612 RS |
1485 | Lisp_Object frame_arg; |
1486 | frame_arg = Qt; | |
44fa5b1e JB |
1487 | |
1488 | /* If we're only looping through windows on a particular frame, | |
1489 | frame points to that frame. If we're looping through windows | |
1490 | on all frames, frame is 0. */ | |
1491 | if (FRAMEP (frames)) | |
1492 | frame = XFRAME (frames); | |
1493 | else if (NILP (frames)) | |
1ae1a37d | 1494 | frame = SELECTED_FRAME (); |
7ab12479 | 1495 | else |
44fa5b1e | 1496 | frame = 0; |
89bca612 RS |
1497 | if (frame) |
1498 | frame_arg = Qlambda; | |
f812f9c6 RS |
1499 | else if (XFASTINT (frames) == 0) |
1500 | frame_arg = frames; | |
89bca612 RS |
1501 | else if (EQ (frames, Qvisible)) |
1502 | frame_arg = frames; | |
7ab12479 | 1503 | |
89bca612 RS |
1504 | /* frame_arg is Qlambda to stick to one frame, |
1505 | Qvisible to consider all visible frames, | |
1506 | or Qt otherwise. */ | |
1507 | ||
7ab12479 | 1508 | /* Pick a window to start with. */ |
017b2bad | 1509 | if (WINDOWP (obj)) |
4b206065 | 1510 | w = obj; |
44fa5b1e | 1511 | else if (frame) |
4b206065 | 1512 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1513 | else |
1ae1a37d | 1514 | w = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 JB |
1515 | |
1516 | /* Figure out the last window we're going to mess with. Since | |
1517 | Fnext_window, given the same options, is guaranteed to go in a | |
1518 | ring, we can just use Fprevious_window to find the last one. | |
1519 | ||
1520 | We can't just wait until we hit the first window again, because | |
1521 | it might be deleted. */ | |
1522 | ||
89bca612 | 1523 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1524 | |
7ab12479 | 1525 | best_window = Qnil; |
4b206065 | 1526 | for (;;) |
7ab12479 JB |
1527 | { |
1528 | /* Pick the next window now, since some operations will delete | |
1529 | the current window. */ | |
89bca612 | 1530 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1531 | |
d29a5631 RS |
1532 | /* Note that we do not pay attention here to whether |
1533 | the frame is visible, since Fnext_window skips non-visible frames | |
1534 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1535 | if (! MINI_WINDOW_P (XWINDOW (w)) |
65a04b96 RS |
1536 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1537 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1538 | || (mini && minibuf_level > 0)) |
1539 | switch (type) | |
1540 | { | |
1541 | case GET_BUFFER_WINDOW: | |
5c204627 RS |
1542 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj) |
1543 | /* Don't find any minibuffer window | |
1544 | except the one that is currently in use. */ | |
1545 | && (MINI_WINDOW_P (XWINDOW (w)) | |
1546 | ? EQ (w, minibuf_window) : 1)) | |
7ab12479 JB |
1547 | return w; |
1548 | break; | |
1549 | ||
1550 | case GET_LRU_WINDOW: | |
1551 | /* t as arg means consider only full-width windows */ | |
111e5992 | 1552 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w))) |
7ab12479 | 1553 | break; |
7ab12479 JB |
1554 | /* Ignore dedicated windows and minibuffers. */ |
1555 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1556 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1557 | break; |
265a9e55 | 1558 | if (NILP (best_window) |
7ab12479 JB |
1559 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1560 | > XFASTINT (XWINDOW (w)->use_time))) | |
1561 | best_window = w; | |
1562 | break; | |
1563 | ||
1564 | case DELETE_OTHER_WINDOWS: | |
1565 | if (XWINDOW (w) != XWINDOW (obj)) | |
1566 | Fdelete_window (w); | |
1567 | break; | |
1568 | ||
1569 | case DELETE_BUFFER_WINDOWS: | |
1570 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1571 | { | |
3548e138 RS |
1572 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1573 | ||
1574 | /* If this window is dedicated, and in a frame of its own, | |
1575 | kill the frame. */ | |
1576 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1577 | && !NILP (XWINDOW (w)->dedicated) | |
1578 | && other_visible_frames (f)) | |
7ab12479 | 1579 | { |
3548e138 RS |
1580 | /* Skip the other windows on this frame. |
1581 | There might be one, the minibuffer! */ | |
1582 | if (! EQ (w, last_window)) | |
1583 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1584 | { | |
1585 | /* As we go, check for the end of the loop. | |
1586 | We mustn't start going around a second time. */ | |
1587 | if (EQ (next_window, last_window)) | |
1588 | { | |
1589 | last_window = w; | |
1590 | break; | |
1591 | } | |
1592 | next_window = Fnext_window (next_window, | |
1593 | mini ? Qt : Qnil, | |
1594 | frame_arg); | |
1595 | } | |
1596 | /* Now we can safely delete the frame. */ | |
1597 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1598 | } |
1599 | else | |
3548e138 RS |
1600 | /* If we're deleting the buffer displayed in the only window |
1601 | on the frame, find a new buffer to display there. */ | |
1602 | if (NILP (XWINDOW (w)->parent)) | |
1603 | { | |
1604 | Lisp_Object new_buffer; | |
b7354ddf RS |
1605 | new_buffer = Fother_buffer (obj, Qnil, |
1606 | XWINDOW (w)->frame); | |
3548e138 RS |
1607 | if (NILP (new_buffer)) |
1608 | new_buffer | |
1609 | = Fget_buffer_create (build_string ("*scratch*")); | |
1610 | Fset_window_buffer (w, new_buffer); | |
1611 | if (EQ (w, selected_window)) | |
1612 | Fset_buffer (XWINDOW (w)->buffer); | |
1613 | } | |
1614 | else | |
1615 | Fdelete_window (w); | |
7ab12479 JB |
1616 | } |
1617 | break; | |
1618 | ||
1619 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1620 | /* Ignore dedicated windows and minibuffers. */ |
1621 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1622 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1623 | break; |
1624 | { | |
1625 | struct window *best_window_ptr = XWINDOW (best_window); | |
1626 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1627 | if (NILP (best_window) |
1628 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1629 | > (XFASTINT (best_window_ptr->height) | |
1630 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1631 | best_window = w; |
1632 | } | |
1633 | break; | |
1634 | ||
1635 | case UNSHOW_BUFFER: | |
1636 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1637 | { | |
1638 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1639 | Lisp_Object another_buffer; |
38ab08d1 | 1640 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
b7354ddf | 1641 | another_buffer = Fother_buffer (obj, Qnil, XWINDOW (w)->frame); |
265a9e55 | 1642 | if (NILP (another_buffer)) |
7ab12479 JB |
1643 | another_buffer |
1644 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1645 | /* If this window is dedicated, and in a frame of its own, |
1646 | kill the frame. */ | |
1647 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1648 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1649 | && other_visible_frames (f)) |
45945a7b RS |
1650 | { |
1651 | /* Skip the other windows on this frame. | |
1652 | There might be one, the minibuffer! */ | |
1653 | if (! EQ (w, last_window)) | |
1654 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1655 | { | |
1656 | /* As we go, check for the end of the loop. | |
1657 | We mustn't start going around a second time. */ | |
1658 | if (EQ (next_window, last_window)) | |
1659 | { | |
1660 | last_window = w; | |
1661 | break; | |
1662 | } | |
1663 | next_window = Fnext_window (next_window, | |
1664 | mini ? Qt : Qnil, | |
1665 | frame_arg); | |
1666 | } | |
1667 | /* Now we can safely delete the frame. */ | |
1668 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1669 | } | |
38ab08d1 | 1670 | else |
38ab08d1 RS |
1671 | { |
1672 | /* Otherwise show a different buffer in the window. */ | |
1673 | XWINDOW (w)->dedicated = Qnil; | |
1674 | Fset_window_buffer (w, another_buffer); | |
1675 | if (EQ (w, selected_window)) | |
1676 | Fset_buffer (XWINDOW (w)->buffer); | |
1677 | } | |
7ab12479 JB |
1678 | } |
1679 | break; | |
3f8ab7bd RS |
1680 | |
1681 | /* Check for a window that has a killed buffer. */ | |
1682 | case CHECK_ALL_WINDOWS: | |
1683 | if (! NILP (XWINDOW (w)->buffer) | |
1684 | && NILP (XBUFFER (XWINDOW (w)->buffer)->name)) | |
1685 | abort (); | |
7ab12479 | 1686 | } |
4b206065 JB |
1687 | |
1688 | if (EQ (w, last_window)) | |
1689 | break; | |
1690 | ||
7ab12479 JB |
1691 | w = next_window; |
1692 | } | |
7ab12479 JB |
1693 | |
1694 | return best_window; | |
37962e60 | 1695 | } |
605be8af | 1696 | |
3f8ab7bd RS |
1697 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1698 | ||
233a4a2c | 1699 | void |
3f8ab7bd RS |
1700 | check_all_windows () |
1701 | { | |
1702 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1703 | } | |
1704 | ||
7ab12479 JB |
1705 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1706 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1707 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1708 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1709 | If FRAME is t, search all frames.\n\ |
1710 | If FRAME is nil, search only the selected frame.\n\ | |
1711 | If FRAME is a frame, search only that frame.") | |
1712 | (frame) | |
1713 | Lisp_Object frame; | |
7ab12479 JB |
1714 | { |
1715 | register Lisp_Object w; | |
1716 | /* First try for a window that is full-width */ | |
89bca612 | 1717 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1718 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1719 | return w; |
1720 | /* If none of them, try the rest */ | |
89bca612 | 1721 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1722 | } |
1723 | ||
1724 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1725 | "Return the largest window in area.\n\ | |
89bca612 | 1726 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1727 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1728 | If FRAME is t, search all frames.\n\ |
1729 | If FRAME is nil, search only the selected frame.\n\ | |
1730 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1731 | (frame) |
1732 | Lisp_Object frame; | |
7ab12479 JB |
1733 | { |
1734 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1735 | frame); |
7ab12479 JB |
1736 | } |
1737 | ||
1738 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1739 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1740 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1741 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1742 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1743 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1744 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1745 | (buffer, frame) |
1746 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1747 | { |
1748 | buffer = Fget_buffer (buffer); | |
017b2bad | 1749 | if (BUFFERP (buffer)) |
44fa5b1e | 1750 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1751 | else |
1752 | return Qnil; | |
1753 | } | |
1754 | ||
1755 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1756 | 0, 1, "", | |
44fa5b1e | 1757 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1758 | Only the frame WINDOW is on is affected.\n\ |
1759 | This function tries to reduce display jumps\n\ | |
1760 | by keeping the text previously visible in WINDOW\n\ | |
1761 | in the same place on the frame. Doing this depends on\n\ | |
1762 | the value of (window-start WINDOW), so if calling this function\n\ | |
1763 | in a program gives strange scrolling, make sure the window-start\n\ | |
1764 | value is reasonable when this function is called.") | |
7ab12479 JB |
1765 | (window) |
1766 | Lisp_Object window; | |
1767 | { | |
1768 | struct window *w; | |
00d3d838 | 1769 | int startpos; |
7ab12479 JB |
1770 | int top; |
1771 | ||
265a9e55 | 1772 | if (NILP (window)) |
7ab12479 JB |
1773 | window = selected_window; |
1774 | else | |
605be8af | 1775 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1776 | |
1777 | w = XWINDOW (window); | |
a2b38b3c | 1778 | |
00d3d838 | 1779 | startpos = marker_position (w->start); |
5500c422 | 1780 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 1781 | |
a2b38b3c RS |
1782 | if (MINI_WINDOW_P (w) && top > 0) |
1783 | error ("Can't expand minibuffer to full frame"); | |
1784 | ||
70728a80 | 1785 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1786 | |
00d3d838 KH |
1787 | /* Try to minimize scrolling, by setting the window start to the point |
1788 | will cause the text at the old window start to be at the same place | |
1789 | on the frame. But don't try to do this if the window start is | |
1790 | outside the visible portion (as might happen when the display is | |
1791 | not current, due to typeahead). */ | |
1792 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1793 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1794 | { | |
1795 | struct position pos; | |
1796 | struct buffer *obuf = current_buffer; | |
1797 | ||
1798 | Fset_buffer (w->buffer); | |
1799 | /* This computation used to temporarily move point, but that can | |
1800 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1801 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 1802 | |
b73ea88e RS |
1803 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
1804 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
1805 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 1806 | : Qnil); |
80622eec RS |
1807 | /* We need to do this, so that the window-scroll-functions |
1808 | get called. */ | |
4d047f50 | 1809 | w->optional_new_start = Qt; |
00d3d838 KH |
1810 | |
1811 | set_buffer_internal (obuf); | |
1812 | } | |
5500c422 | 1813 | |
7ab12479 JB |
1814 | return Qnil; |
1815 | } | |
1816 | ||
1817 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1818 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1819 | "Delete all windows showing BUFFER.\n\ |
1820 | Optional second argument FRAME controls which frames are affected.\n\ | |
c520265e RS |
1821 | If optional argument FRAME is `visible', search all visible frames.\n\ |
1822 | If FRAME is 0, search all visible and iconified frames.\n\ | |
1823 | If FRAME is nil, search all frames.\n\ | |
1824 | If FRAME is t, search only the selected frame.\n\ | |
1825 | If FRAME is a frame, search only that frame.") | |
26f6279d JB |
1826 | (buffer, frame) |
1827 | Lisp_Object buffer, frame; | |
7ab12479 | 1828 | { |
26f6279d JB |
1829 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1830 | expects. */ | |
c520265e RS |
1831 | if (NILP (frame)) |
1832 | frame = Qt; | |
1833 | else if (EQ (frame, Qt)) | |
1834 | frame = Qnil; | |
26f6279d | 1835 | |
265a9e55 | 1836 | if (!NILP (buffer)) |
7ab12479 JB |
1837 | { |
1838 | buffer = Fget_buffer (buffer); | |
1839 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1840 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 1841 | } |
5500c422 | 1842 | |
7ab12479 JB |
1843 | return Qnil; |
1844 | } | |
1845 | ||
1846 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1847 | Sreplace_buffer_in_windows, | |
1848 | 1, 1, "bReplace buffer in windows: ", | |
1849 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1850 | (buffer) | |
1851 | Lisp_Object buffer; | |
1852 | { | |
265a9e55 | 1853 | if (!NILP (buffer)) |
7ab12479 JB |
1854 | { |
1855 | buffer = Fget_buffer (buffer); | |
1856 | CHECK_BUFFER (buffer, 0); | |
1857 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1858 | } | |
1859 | return Qnil; | |
1860 | } | |
ff58478b RS |
1861 | |
1862 | /* Replace BUFFER with some other buffer in all windows | |
1863 | of all frames, even those on other keyboards. */ | |
1864 | ||
1865 | void | |
1866 | replace_buffer_in_all_windows (buffer) | |
1867 | Lisp_Object buffer; | |
1868 | { | |
27abb84f | 1869 | #ifdef MULTI_KBOARD |
ff58478b RS |
1870 | Lisp_Object tail, frame; |
1871 | ||
ff58478b RS |
1872 | /* A single call to window_loop won't do the job |
1873 | because it only considers frames on the current keyboard. | |
1874 | So loop manually over frames, and handle each one. */ | |
1875 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 1876 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 1877 | #else |
db7f721d | 1878 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
1879 | #endif |
1880 | } | |
7ab12479 JB |
1881 | \f |
1882 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1883 | |
1884 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1885 | might crash Emacs. */ | |
5500c422 | 1886 | |
a481b3ea JB |
1887 | #define MIN_SAFE_WINDOW_WIDTH (2) |
1888 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1889 | ||
1890 | /* Make sure that window_min_height and window_min_width are | |
1891 | not too small; if they are, set them to safe minima. */ | |
1892 | ||
1893 | static void | |
1894 | check_min_window_sizes () | |
1895 | { | |
1896 | /* Smaller values might permit a crash. */ | |
1897 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1898 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1899 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1900 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1901 | } | |
1902 | ||
1903 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1904 | minimum allowable size. */ | |
5500c422 | 1905 | |
605be8af | 1906 | void |
a481b3ea | 1907 | check_frame_size (frame, rows, cols) |
605be8af JB |
1908 | FRAME_PTR frame; |
1909 | int *rows, *cols; | |
a481b3ea | 1910 | { |
628df3bf | 1911 | /* For height, we have to see: |
37962e60 | 1912 | whether the frame has a minibuffer, |
628df3bf JB |
1913 | whether it wants a mode line, and |
1914 | whether it has a menu bar. */ | |
a481b3ea | 1915 | int min_height = |
79f92720 JB |
1916 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1917 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1918 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
1919 | |
1920 | if (FRAME_TOP_MARGIN (frame) > 0) | |
1921 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
1922 | |
1923 | if (*rows < min_height) | |
1924 | *rows = min_height; | |
1925 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1926 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1927 | } | |
1928 | ||
c1636aa6 | 1929 | |
233a4a2c GM |
1930 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
1931 | check if W's width can be changed, otherwise check W's height. | |
1932 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
1933 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
1934 | either. */ | |
c1636aa6 | 1935 | |
233a4a2c GM |
1936 | static int |
1937 | window_fixed_size_p (w, width_p, check_siblings_p) | |
1938 | struct window *w; | |
1939 | int width_p, check_siblings_p; | |
1940 | { | |
1941 | int fixed_p; | |
1942 | struct window *c; | |
1943 | ||
1944 | if (!NILP (w->hchild)) | |
1945 | { | |
1946 | c = XWINDOW (w->hchild); | |
1947 | ||
1948 | if (width_p) | |
1949 | { | |
1950 | /* A horiz. combination is fixed-width if all of if its | |
1951 | children are. */ | |
1952 | while (c && window_fixed_size_p (c, width_p, 0)) | |
1953 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
1954 | fixed_p = c == NULL; | |
1955 | } | |
1956 | else | |
1957 | { | |
1958 | /* A horiz. combination is fixed-height if one of if its | |
1959 | children is. */ | |
1960 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
1961 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
1962 | fixed_p = c != NULL; | |
1963 | } | |
1964 | } | |
1965 | else if (!NILP (w->vchild)) | |
1966 | { | |
1967 | c = XWINDOW (w->vchild); | |
1968 | ||
1969 | if (width_p) | |
1970 | { | |
1971 | /* A vert. combination is fixed-width if one of if its | |
1972 | children is. */ | |
1973 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
1974 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
1975 | fixed_p = c != NULL; | |
1976 | } | |
1977 | else | |
1978 | { | |
1979 | /* A vert. combination is fixed-height if all of if its | |
1980 | children are. */ | |
1981 | while (c && window_fixed_size_p (c, width_p, 0)) | |
1982 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
1983 | fixed_p = c == NULL; | |
1984 | } | |
1985 | } | |
1986 | else if (BUFFERP (w->buffer)) | |
1987 | { | |
a34dfd12 GM |
1988 | if (w->height_fixed_p && !width_p) |
1989 | fixed_p = 1; | |
1990 | else | |
233a4a2c | 1991 | { |
a34dfd12 GM |
1992 | struct buffer *old = current_buffer; |
1993 | Lisp_Object val; | |
1994 | ||
1995 | current_buffer = XBUFFER (w->buffer); | |
1996 | val = find_symbol_value (Qwindow_size_fixed); | |
1997 | current_buffer = old; | |
1998 | ||
1999 | fixed_p = 0; | |
2000 | if (!EQ (val, Qunbound)) | |
2001 | { | |
2002 | fixed_p = !NILP (val); | |
2003 | ||
2004 | if (fixed_p | |
2005 | && ((EQ (val, Qheight) && width_p) | |
2006 | || (EQ (val, Qwidth) && !width_p))) | |
2007 | fixed_p = 0; | |
2008 | } | |
233a4a2c GM |
2009 | } |
2010 | ||
2011 | /* Can't tell if this one is resizable without looking at | |
2012 | siblings. If all siblings are fixed-size this one is too. */ | |
2013 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2014 | { | |
2015 | Lisp_Object child; | |
2016 | ||
2017 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2018 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2019 | break; | |
2020 | ||
2021 | if (NILP (child)) | |
2022 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2023 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2024 | break; | |
2025 | ||
2026 | if (NILP (child)) | |
2027 | fixed_p = 1; | |
2028 | } | |
2029 | } | |
2030 | else | |
2031 | fixed_p = 1; | |
2032 | ||
2033 | return fixed_p; | |
2034 | } | |
2035 | ||
2036 | ||
2037 | /* Return the minimum size of window W, not taking fixed-width windows | |
2038 | into account. WIDTH_P non-zero means return the minimum width, | |
2039 | otherwise return the minimum height. If W is a combination window, | |
2040 | compute the minimum size from the minimum sizes of W's children. */ | |
2041 | ||
2042 | static int | |
2043 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2044 | struct window *w; |
2045 | int width_p; | |
2046 | { | |
233a4a2c | 2047 | struct window *c; |
c1636aa6 GM |
2048 | int size; |
2049 | ||
233a4a2c GM |
2050 | if (!NILP (w->hchild)) |
2051 | { | |
2052 | c = XWINDOW (w->hchild); | |
2053 | size = 0; | |
2054 | ||
2055 | if (width_p) | |
2056 | { | |
2057 | /* The min width of a horizontal combination is | |
2058 | the sum of the min widths of its children. */ | |
2059 | while (c) | |
2060 | { | |
2061 | size += window_min_size_1 (c, width_p); | |
2062 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2063 | } | |
2064 | } | |
2065 | else | |
2066 | { | |
2067 | /* The min height a horizontal combination equals | |
2068 | the maximum of all min height of its children. */ | |
2069 | while (c) | |
2070 | { | |
2071 | int min_size = window_min_size_1 (c, width_p); | |
2072 | size = max (min_size, size); | |
2073 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2074 | } | |
2075 | } | |
2076 | } | |
2077 | else if (!NILP (w->vchild)) | |
2078 | { | |
2079 | c = XWINDOW (w->vchild); | |
2080 | size = 0; | |
2081 | ||
2082 | if (width_p) | |
2083 | { | |
2084 | /* The min width of a vertical combination is | |
2085 | the maximum of the min widths of its children. */ | |
2086 | while (c) | |
2087 | { | |
2088 | int min_size = window_min_size_1 (c, width_p); | |
2089 | size = max (min_size, size); | |
2090 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2091 | } | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | /* The min height of a vertical combination equals | |
2096 | the sum of the min height of its children. */ | |
2097 | while (c) | |
2098 | { | |
2099 | size += window_min_size_1 (c, width_p); | |
2100 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2101 | } | |
2102 | } | |
2103 | } | |
c1636aa6 GM |
2104 | else |
2105 | { | |
233a4a2c GM |
2106 | if (width_p) |
2107 | size = window_min_width; | |
c1636aa6 | 2108 | else |
233a4a2c GM |
2109 | { |
2110 | if (MINI_WINDOW_P (w) | |
2111 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2112 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2113 | size = 1; |
2114 | else | |
2115 | size = window_min_height; | |
2116 | } | |
c1636aa6 GM |
2117 | } |
2118 | ||
2119 | return size; | |
2120 | } | |
2121 | ||
2122 | ||
233a4a2c GM |
2123 | /* Return the minimum size of window W, taking fixed-size windows into |
2124 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2125 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2126 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2127 | unless FIXED is null. */ | |
7ab12479 | 2128 | |
233a4a2c | 2129 | static int |
f984d4fc | 2130 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2131 | struct window *w; |
f984d4fc | 2132 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2133 | { |
2134 | int size, fixed_p; | |
2135 | ||
f984d4fc GM |
2136 | if (ignore_fixed_p) |
2137 | fixed_p = 0; | |
2138 | else | |
2139 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2140 | ||
233a4a2c GM |
2141 | if (fixed) |
2142 | *fixed = fixed_p; | |
2143 | ||
2144 | if (fixed_p) | |
2145 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2146 | else | |
2147 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2148 | |
233a4a2c GM |
2149 | return size; |
2150 | } | |
2151 | ||
2152 | ||
2153 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2154 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2155 | keep their proportionate size relative to WINDOW. Propagate | |
2156 | WINDOW's top or left edge position to children. Delete windows | |
2157 | that become too small unless NODELETE_P is non-zero. */ | |
2158 | ||
2159 | static void | |
2160 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2161 | Lisp_Object window; |
233a4a2c | 2162 | int size, width_p, nodelete_p; |
7ab12479 | 2163 | { |
233a4a2c GM |
2164 | struct window *w = XWINDOW (window); |
2165 | struct window *c; | |
2166 | Lisp_Object child, *forward, *sideward; | |
2167 | int old_size, min_size; | |
7ab12479 | 2168 | |
a481b3ea | 2169 | check_min_window_sizes (); |
233a4a2c | 2170 | |
b5f05b50 GM |
2171 | /* If the window has been "too small" at one point, |
2172 | don't delete it for being "too small" in the future. | |
2173 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2174 | if (width_p) |
2175 | { | |
2176 | old_size = XFASTINT (w->width); | |
2177 | min_size = window_min_width; | |
2178 | } | |
2179 | else | |
2180 | { | |
2181 | old_size = XFASTINT (w->height); | |
2182 | min_size = window_min_height; | |
2183 | } | |
2184 | ||
2185 | if (old_size < window_min_width) | |
b5f05b50 GM |
2186 | w->too_small_ok = Qt; |
2187 | ||
233a4a2c GM |
2188 | /* Maybe delete WINDOW if it's too small. */ |
2189 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2190 | { |
233a4a2c | 2191 | int min_size; |
b5f05b50 GM |
2192 | |
2193 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) | |
233a4a2c | 2194 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2195 | else |
233a4a2c | 2196 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2197 | |
233a4a2c | 2198 | if (size < min_size) |
c1636aa6 GM |
2199 | { |
2200 | delete_window (window); | |
2201 | return; | |
2202 | } | |
7ab12479 JB |
2203 | } |
2204 | ||
233a4a2c | 2205 | /* Set redisplay hints. */ |
d834a2e9 | 2206 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2207 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2208 | windows_or_buffers_changed++; |
29aeee73 RS |
2209 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
2210 | ||
233a4a2c GM |
2211 | if (width_p) |
2212 | { | |
2213 | sideward = &w->vchild; | |
2214 | forward = &w->hchild; | |
2215 | XSETFASTINT (w->width, size); | |
2216 | } | |
2217 | else | |
2218 | { | |
2219 | sideward = &w->hchild; | |
2220 | forward = &w->vchild; | |
2221 | XSETFASTINT (w->height, size); | |
2222 | } | |
2223 | ||
2224 | if (!NILP (*sideward)) | |
7ab12479 | 2225 | { |
233a4a2c | 2226 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2227 | { |
233a4a2c GM |
2228 | c = XWINDOW (child); |
2229 | if (width_p) | |
2230 | c->left = w->left; | |
2231 | else | |
2232 | c->top = w->top; | |
2233 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2234 | } |
2235 | } | |
233a4a2c | 2236 | else if (!NILP (*forward)) |
7ab12479 | 2237 | { |
233a4a2c GM |
2238 | int fixed_size, each, extra, n; |
2239 | int resize_fixed_p, nfixed; | |
2240 | int last_pos, first_pos, nchildren; | |
2241 | ||
2242 | /* Determine the fixed-size portion of the this window, and the | |
2243 | number of child windows. */ | |
2244 | fixed_size = nchildren = nfixed = 0; | |
2245 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) | |
7ab12479 JB |
2246 | { |
2247 | c = XWINDOW (child); | |
233a4a2c GM |
2248 | if (window_fixed_size_p (c, width_p, 0)) |
2249 | { | |
2250 | fixed_size += (width_p | |
2251 | ? XFASTINT (c->width) : XFASTINT (c->height)); | |
2252 | ++nfixed; | |
2253 | } | |
2254 | } | |
7ab12479 | 2255 | |
233a4a2c GM |
2256 | /* If the new size is smaller than fixed_size, or if there |
2257 | aren't any resizable windows, allow resizing fixed-size | |
2258 | windows. */ | |
2259 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2260 | ||
2261 | /* Compute how many lines/columns to add to each child. The | |
2262 | value of extra takes care of rounding errors. */ | |
2263 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
2264 | each = (size - old_size) / n; | |
2265 | extra = (size - old_size) - n * each; | |
2266 | ||
2267 | /* Compute new children heights and edge positions. */ | |
2268 | first_pos = width_p ? XFASTINT (w->left) : XFASTINT (w->top); | |
2269 | last_pos = first_pos; | |
2270 | for (child = *forward; !NILP (child); child = c->next) | |
2271 | { | |
2272 | int new_size, old_size; | |
2273 | ||
2274 | c = XWINDOW (child); | |
2275 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2276 | new_size = old_size; | |
7ab12479 | 2277 | |
233a4a2c GM |
2278 | /* The top or left edge position of this child equals the |
2279 | bottom or right edge of its predecessor. */ | |
2280 | if (width_p) | |
2281 | c->left = make_number (last_pos); | |
2282 | else | |
2283 | c->top = make_number (last_pos); | |
7ab12479 | 2284 | |
233a4a2c GM |
2285 | /* If this child can be resized, do it. */ |
2286 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2287 | { | |
2288 | new_size = old_size + each + extra; | |
2289 | extra = 0; | |
2290 | } | |
2291 | ||
2292 | /* Set new height. Note that size_window also propagates | |
2293 | edge positions to children, so it's not a no-op if we | |
2294 | didn't change the child's size. */ | |
2295 | size_window (child, new_size, width_p, 1); | |
2296 | ||
2297 | /* Remember the bottom/right edge position of this child; it | |
2298 | will be used to set the top/left edge of the next child. */ | |
2299 | last_pos += new_size; | |
7ab12479 | 2300 | } |
233a4a2c GM |
2301 | |
2302 | /* We should have covered the parent exactly with child windows. */ | |
2303 | xassert (size == last_pos - first_pos); | |
2304 | ||
7ab12479 | 2305 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2306 | if (!nodelete_p) |
2307 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2308 | { |
233a4a2c GM |
2309 | int child_size; |
2310 | c = XWINDOW (child); | |
2311 | child_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2312 | size_window (child, child_size, width_p, 0); | |
7ab12479 JB |
2313 | } |
2314 | } | |
2315 | } | |
2316 | ||
233a4a2c GM |
2317 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2318 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2319 | that become too small in the process. (The caller should check | |
2320 | later and do so if appropriate.) */ | |
7ab12479 | 2321 | |
5e14b1fc | 2322 | void |
233a4a2c | 2323 | set_window_height (window, height, nodelete) |
7ab12479 | 2324 | Lisp_Object window; |
233a4a2c | 2325 | int height; |
7ab12479 JB |
2326 | int nodelete; |
2327 | { | |
233a4a2c GM |
2328 | size_window (window, height, 0, nodelete); |
2329 | } | |
7ab12479 | 2330 | |
7ab12479 | 2331 | |
233a4a2c GM |
2332 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2333 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2334 | that become too small in the process. (The caller should check | |
2335 | later and do so if appropriate.) */ | |
7ab12479 | 2336 | |
233a4a2c GM |
2337 | void |
2338 | set_window_width (window, width, nodelete) | |
2339 | Lisp_Object window; | |
2340 | int width; | |
2341 | int nodelete; | |
2342 | { | |
2343 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2344 | } |
233a4a2c | 2345 | |
7ab12479 | 2346 | \f |
1d8d96fa | 2347 | int window_select_count; |
7ab12479 | 2348 | |
5b03d3c0 RS |
2349 | Lisp_Object |
2350 | Fset_window_buffer_unwind (obuf) | |
2351 | Lisp_Object obuf; | |
2352 | { | |
2353 | Fset_buffer (obuf); | |
2354 | return Qnil; | |
2355 | } | |
2356 | ||
7ab12479 | 2357 | |
5500c422 GM |
2358 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2359 | means it's allowed to run hooks. See make_frame for a case where | |
2360 | it's not allowed. */ | |
7ab12479 | 2361 | |
5500c422 GM |
2362 | void |
2363 | set_window_buffer (window, buffer, run_hooks_p) | |
2364 | Lisp_Object window, buffer; | |
2365 | int run_hooks_p; | |
2366 | { | |
2367 | struct window *w = XWINDOW (window); | |
2368 | struct buffer *b = XBUFFER (buffer); | |
2369 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2370 | |
2371 | w->buffer = buffer; | |
86e48436 RS |
2372 | |
2373 | if (EQ (window, selected_window)) | |
5500c422 | 2374 | b->last_selected_window = window; |
beb4e312 RS |
2375 | |
2376 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2377 | if (INTEGERP (b->display_count)) |
2378 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2379 | b->display_time = Fcurrent_time (); | |
86e48436 | 2380 | |
d834a2e9 | 2381 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2382 | XSETFASTINT (w->window_end_vpos, 0); |
2383 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2384 | w->window_end_valid = Qnil; |
dba06815 | 2385 | XSETFASTINT (w->hscroll, 0); |
5500c422 | 2386 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2387 | set_marker_restricted (w->start, |
5500c422 | 2388 | make_number (b->last_window_start), |
7ab12479 JB |
2389 | buffer); |
2390 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2391 | w->force_start = Qnil; |
d834a2e9 | 2392 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2393 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2394 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2395 | |
2396 | /* We must select BUFFER for running the window-scroll-functions. | |
2397 | If WINDOW is selected, switch permanently. | |
2398 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2399 | if (EQ (window, selected_window)) |
2400 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2401 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2402 | because that might itself be a local variable. */ | |
2403 | else if (window_initialized) | |
2404 | { | |
2405 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2406 | Fset_buffer (buffer); | |
2407 | } | |
2408 | ||
5500c422 | 2409 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2410 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2411 | |
5500c422 GM |
2412 | if (run_hooks_p) |
2413 | { | |
2414 | if (! NILP (Vwindow_scroll_functions)) | |
2415 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2416 | Fmarker_position (w->start)); | |
2417 | ||
2418 | if (! NILP (Vwindow_configuration_change_hook) | |
2419 | && ! NILP (Vrun_hooks)) | |
2420 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2421 | } | |
543f5fb1 | 2422 | |
5b03d3c0 | 2423 | unbind_to (count, Qnil); |
5500c422 | 2424 | } |
5b03d3c0 | 2425 | |
5500c422 GM |
2426 | |
2427 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
2428 | "Make WINDOW display BUFFER as its contents.\n\ | |
2429 | BUFFER can be a buffer or buffer name.") | |
2430 | (window, buffer) | |
2431 | register Lisp_Object window, buffer; | |
2432 | { | |
2433 | register Lisp_Object tem; | |
2434 | register struct window *w = decode_window (window); | |
5500c422 GM |
2435 | |
2436 | buffer = Fget_buffer (buffer); | |
2437 | CHECK_BUFFER (buffer, 1); | |
2438 | ||
2439 | if (NILP (XBUFFER (buffer)->name)) | |
2440 | error ("Attempt to display deleted buffer"); | |
2441 | ||
2442 | tem = w->buffer; | |
2443 | if (NILP (tem)) | |
2444 | error ("Window is deleted"); | |
2445 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2446 | is first being set up. */ | |
2447 | { | |
2448 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2449 | error ("Window is dedicated to `%s'", | |
2450 | XSTRING (XBUFFER (tem)->name)->data); | |
2451 | ||
2452 | unshow_buffer (w); | |
2453 | } | |
2454 | ||
2455 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2456 | return Qnil; |
2457 | } | |
2458 | ||
2459 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
2460 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
beb4e312 RS |
2461 | If WINDOW is not already selected, also make WINDOW's buffer current.\n\ |
2462 | Note that the main editor command loop\n\ | |
2463 | selects the buffer of the selected window before each command.") | |
7ab12479 JB |
2464 | (window) |
2465 | register Lisp_Object window; | |
b7354ddf RS |
2466 | { |
2467 | return select_window_1 (window, 1); | |
2468 | } | |
2469 | \f | |
2470 | static Lisp_Object | |
2471 | select_window_1 (window, recordflag) | |
2472 | register Lisp_Object window; | |
2473 | int recordflag; | |
7ab12479 JB |
2474 | { |
2475 | register struct window *w; | |
2476 | register struct window *ow = XWINDOW (selected_window); | |
1ae1a37d | 2477 | struct frame *sf; |
7ab12479 | 2478 | |
605be8af | 2479 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2480 | |
2481 | w = XWINDOW (window); | |
2482 | ||
265a9e55 | 2483 | if (NILP (w->buffer)) |
7ab12479 JB |
2484 | error ("Trying to select deleted window or non-leaf window"); |
2485 | ||
d834a2e9 | 2486 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2487 | if (EQ (window, selected_window)) |
2488 | return window; | |
2489 | ||
596ae0cf RS |
2490 | if (! NILP (ow->buffer)) |
2491 | set_marker_both (ow->pointm, ow->buffer, | |
2492 | BUF_PT (XBUFFER (ow->buffer)), | |
2493 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
7ab12479 JB |
2494 | |
2495 | selected_window = window; | |
1ae1a37d GM |
2496 | sf = SELECTED_FRAME (); |
2497 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2498 | { |
44fa5b1e | 2499 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2500 | /* Use this rather than Fhandle_switch_frame |
2501 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2502 | move around in the state where a minibuffer in a separate | |
2503 | frame is active. */ | |
2504 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2505 | } |
2506 | else | |
1ae1a37d | 2507 | sf->selected_window = window; |
7ab12479 | 2508 | |
b7354ddf RS |
2509 | if (recordflag) |
2510 | record_buffer (w->buffer); | |
7ab12479 JB |
2511 | Fset_buffer (w->buffer); |
2512 | ||
86e48436 RS |
2513 | XBUFFER (w->buffer)->last_selected_window = window; |
2514 | ||
7ab12479 JB |
2515 | /* Go to the point recorded in the window. |
2516 | This is important when the buffer is in more | |
2517 | than one window. It also matters when | |
2518 | redisplay_window has altered point after scrolling, | |
2519 | because it makes the change only in the window. */ | |
2520 | { | |
2521 | register int new_point = marker_position (w->pointm); | |
2522 | if (new_point < BEGV) | |
2523 | SET_PT (BEGV); | |
a9c95e08 | 2524 | else if (new_point > ZV) |
7ab12479 JB |
2525 | SET_PT (ZV); |
2526 | else | |
2527 | SET_PT (new_point); | |
2528 | } | |
2529 | ||
2530 | windows_or_buffers_changed++; | |
2531 | return window; | |
2532 | } | |
b7354ddf | 2533 | \f |
441a127e RS |
2534 | /* Deiconify the frame containing the window WINDOW, |
2535 | unless it is the selected frame; | |
2536 | then return WINDOW. | |
2537 | ||
2538 | The reason for the exception for the selected frame | |
2539 | is that it seems better not to change the selected frames visibility | |
2540 | merely because of displaying a different buffer in it. | |
2541 | The deiconification is useful when a buffer gets shown in | |
2542 | another frame that you were not using lately. */ | |
d07f802a RS |
2543 | |
2544 | static Lisp_Object | |
2545 | display_buffer_1 (window) | |
2546 | Lisp_Object window; | |
2547 | { | |
1ae1a37d GM |
2548 | Lisp_Object frame = XWINDOW (window)->frame; |
2549 | FRAME_PTR f = XFRAME (frame); | |
2550 | ||
d07f802a | 2551 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2552 | |
2553 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2554 | { |
2555 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2556 | Fmake_frame_visible (frame); |
37962e60 | 2557 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2558 | Fraise_frame (frame); |
60117126 | 2559 | } |
1ae1a37d | 2560 | |
d07f802a RS |
2561 | return window; |
2562 | } | |
2563 | ||
4628f7a4 | 2564 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2565 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2566 | The value is actually t if the frame should be called with default frame\n\ | |
2567 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2568 | See `special-display-buffer-names', and `special-display-regexps'.") |
2569 | (buffer_name) | |
2570 | Lisp_Object buffer_name; | |
2571 | { | |
2572 | Lisp_Object tem; | |
2573 | ||
2574 | CHECK_STRING (buffer_name, 1); | |
2575 | ||
2576 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2577 | if (!NILP (tem)) | |
2578 | return Qt; | |
2579 | ||
2580 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2581 | if (!NILP (tem)) | |
2582 | return XCDR (tem); | |
2583 | ||
2584 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2585 | { | |
2586 | Lisp_Object car = XCAR (tem); | |
2587 | if (STRINGP (car) | |
2588 | && fast_string_match (car, buffer_name) >= 0) | |
2589 | return Qt; | |
2590 | else if (CONSP (car) | |
2591 | && STRINGP (XCAR (car)) | |
2592 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2593 | return XCDR (car); |
4628f7a4 EN |
2594 | } |
2595 | return Qnil; | |
2596 | } | |
2597 | ||
2598 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2599 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2600 | See `same-window-buffer-names' and `same-window-regexps'.") |
2601 | (buffer_name) | |
2602 | Lisp_Object buffer_name; | |
2603 | { | |
2604 | Lisp_Object tem; | |
2605 | ||
2606 | CHECK_STRING (buffer_name, 1); | |
2607 | ||
2608 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2609 | if (!NILP (tem)) | |
2610 | return Qt; | |
2611 | ||
2612 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2613 | if (!NILP (tem)) | |
2614 | return Qt; | |
2615 | ||
2616 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2617 | { | |
2618 | Lisp_Object car = XCAR (tem); | |
2619 | if (STRINGP (car) | |
2620 | && fast_string_match (car, buffer_name) >= 0) | |
2621 | return Qt; | |
2622 | else if (CONSP (car) | |
2623 | && STRINGP (XCAR (car)) | |
2624 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2625 | return Qt; | |
2626 | } | |
2627 | return Qnil; | |
2628 | } | |
2629 | ||
53f76081 RS |
2630 | /* Use B so the default is (other-buffer). */ |
2631 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, | |
2632 | "BDisplay buffer: \nP", | |
7ab12479 JB |
2633 | "Make BUFFER appear in some window but don't select it.\n\ |
2634 | BUFFER can be a buffer or a buffer name.\n\ | |
2635 | If BUFFER is shown already in some window, just use that one,\n\ | |
2636 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2637 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2638 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 RS |
2639 | Returns the window displaying BUFFER.\n\ |
2640 | \n\ | |
2641 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2642 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
53f76081 RS |
2643 | buffer names are handled.\n\ |
2644 | \n\ | |
2645 | If optional argument FRAME is `visible', search all visible frames.\n\ | |
2646 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2647 | If FRAME is t, search all frames.\n\ | |
2648 | If FRAME is a frame, search only that frame.\n\ | |
2649 | If FRAME is nil, search only the selected frame\n\ | |
2650 | (actually the last nonminibuffer frame),\n\ | |
2651 | unless `pop-up-frames' is non-nil,\n\ | |
2652 | which means search visible and iconified frames.") | |
2653 | (buffer, not_this_window, frame) | |
2654 | register Lisp_Object buffer, not_this_window, frame; | |
7ab12479 | 2655 | { |
aee631c2 | 2656 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2657 | struct frame *f; |
7ab12479 | 2658 | |
aee631c2 | 2659 | swp = Qnil; |
7ab12479 JB |
2660 | buffer = Fget_buffer (buffer); |
2661 | CHECK_BUFFER (buffer, 0); | |
2662 | ||
265a9e55 | 2663 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2664 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2665 | ||
265a9e55 | 2666 | if (NILP (not_this_window) |
7ab12479 | 2667 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2668 | return display_buffer_1 (selected_window); |
7ab12479 | 2669 | |
855d8627 RS |
2670 | /* See if the user has specified this buffer should appear |
2671 | in the selected window. */ | |
2672 | if (NILP (not_this_window)) | |
2673 | { | |
aee631c2 RS |
2674 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2675 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2676 | { |
2677 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2678 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2679 | } |
855d8627 RS |
2680 | } |
2681 | ||
e8edb3ae | 2682 | /* If pop_up_frames, |
73dc5198 KH |
2683 | look for a window showing BUFFER on any visible or iconified frame. |
2684 | Otherwise search only the current frame. */ | |
53f76081 RS |
2685 | if (! NILP (frame)) |
2686 | tem = frame; | |
2687 | else if (pop_up_frames || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2688 | XSETFASTINT (tem, 0); |
2689 | else | |
73dc5198 KH |
2690 | XSETFRAME (tem, last_nonminibuf_frame); |
2691 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
2692 | if (!NILP (window) |
2693 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 2694 | { |
d07f802a | 2695 | return display_buffer_1 (window); |
f812f9c6 | 2696 | } |
7ab12479 | 2697 | |
a90712c2 | 2698 | /* Certain buffer names get special handling. */ |
aee631c2 | 2699 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2700 | { |
4628f7a4 EN |
2701 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2702 | if (EQ (tem, Qt)) | |
a90712c2 | 2703 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2704 | if (CONSP (tem)) |
2705 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2706 | } |
2707 | ||
44fa5b1e JB |
2708 | /* If there are no frames open that have more than a minibuffer, |
2709 | we need to create a new frame. */ | |
2710 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2711 | { |
a90712c2 | 2712 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2713 | Fset_window_buffer (window, buffer); |
d07f802a | 2714 | return display_buffer_1 (window); |
7ab12479 | 2715 | } |
7ab12479 | 2716 | |
1ae1a37d | 2717 | f = SELECTED_FRAME (); |
43bad991 | 2718 | if (pop_up_windows |
1ae1a37d | 2719 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2720 | /* If the current frame is a special display frame, |
2721 | don't try to reuse its windows. */ | |
1ae1a37d | 2722 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2723 | { |
12cae7c0 KH |
2724 | Lisp_Object frames; |
2725 | ||
37962e60 | 2726 | frames = Qnil; |
1ae1a37d | 2727 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2728 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2729 | /* Don't try to create a window if would get an error */ |
2730 | if (split_height_threshold < window_min_height << 1) | |
2731 | split_height_threshold = window_min_height << 1; | |
2732 | ||
cee67da9 RS |
2733 | /* Note that both Fget_largest_window and Fget_lru_window |
2734 | ignore minibuffers and dedicated windows. | |
2735 | This means they can return nil. */ | |
7ab12479 | 2736 | |
cee67da9 RS |
2737 | /* If the frame we would try to split cannot be split, |
2738 | try other frames. */ | |
1ae1a37d | 2739 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
2740 | { |
2741 | /* Try visible frames first. */ | |
2742 | window = Fget_largest_window (Qvisible); | |
2743 | /* If that didn't work, try iconified frames. */ | |
2744 | if (NILP (window)) | |
2745 | window = Fget_largest_window (make_number (0)); | |
2746 | if (NILP (window)) | |
2747 | window = Fget_largest_window (Qt); | |
2748 | } | |
2749 | else | |
2750 | window = Fget_largest_window (frames); | |
2751 | ||
92cca945 RS |
2752 | /* If we got a tall enough full-width window that can be split, |
2753 | split it. */ | |
265a9e55 | 2754 | if (!NILP (window) |
92cca945 | 2755 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2756 | && window_height (window) >= split_height_threshold |
111e5992 | 2757 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2758 | window = Fsplit_window (window, Qnil, Qnil); |
2759 | else | |
2760 | { | |
1942f68f RS |
2761 | Lisp_Object upper, lower, other; |
2762 | ||
44fa5b1e | 2763 | window = Fget_lru_window (frames); |
92cca945 RS |
2764 | /* If the LRU window is selected, and big enough, |
2765 | and can be split, split it. */ | |
cee67da9 | 2766 | if (!NILP (window) |
92cca945 | 2767 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2768 | && (EQ (window, selected_window) |
2769 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2770 | && window_height (window) >= window_min_height << 1) |
2771 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 2772 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 2773 | |
cee67da9 | 2774 | /* Try visible frames first. */ |
48d9379d RS |
2775 | if (NILP (window)) |
2776 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
2777 | if (NILP (window)) |
2778 | window = Fget_largest_window (Qvisible); | |
2779 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
2780 | if (NILP (window)) |
2781 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
2782 | if (NILP (window)) |
2783 | window = Fget_largest_window (make_number (0)); | |
2784 | /* Try invisible frames. */ | |
48d9379d RS |
2785 | if (NILP (window)) |
2786 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
2787 | if (NILP (window)) |
2788 | window = Fget_largest_window (Qt); | |
2789 | /* As a last resort, make a new frame. */ | |
2790 | if (NILP (window)) | |
2791 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2792 | /* If window appears above or below another, |
2793 | even out their heights. */ | |
cac66e4f | 2794 | other = upper = lower = Qnil; |
1942f68f RS |
2795 | if (!NILP (XWINDOW (window)->prev)) |
2796 | other = upper = XWINDOW (window)->prev, lower = window; | |
2797 | if (!NILP (XWINDOW (window)->next)) | |
2798 | other = lower = XWINDOW (window)->next, upper = window; | |
2799 | if (!NILP (other) | |
2800 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
296b535c KH |
2801 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
2802 | && (XFASTINT (XWINDOW (other)->height) | |
2803 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 2804 | { |
296b535c KH |
2805 | int total = (XFASTINT (XWINDOW (other)->height) |
2806 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
2807 | enlarge_window (upper, |
2808 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 2809 | 0); |
1942f68f | 2810 | } |
7ab12479 JB |
2811 | } |
2812 | } | |
2813 | else | |
2814 | window = Fget_lru_window (Qnil); | |
2815 | ||
2816 | Fset_window_buffer (window, buffer); | |
d07f802a | 2817 | return display_buffer_1 (window); |
7ab12479 JB |
2818 | } |
2819 | ||
2820 | void | |
2821 | temp_output_buffer_show (buf) | |
2822 | register Lisp_Object buf; | |
2823 | { | |
2824 | register struct buffer *old = current_buffer; | |
2825 | register Lisp_Object window; | |
2826 | register struct window *w; | |
2827 | ||
bccd3dd1 RS |
2828 | XBUFFER (buf)->directory = current_buffer->directory; |
2829 | ||
7ab12479 | 2830 | Fset_buffer (buf); |
c6367666 | 2831 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2832 | BEGV = BEG; |
2833 | ZV = Z; | |
2834 | SET_PT (BEG); | |
b1599b4c | 2835 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
2836 | set_buffer_internal (old); |
2837 | ||
2838 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2839 | call1 (Vtemp_buffer_show_function, buf); | |
2840 | else | |
2841 | { | |
53f76081 | 2842 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 2843 | |
1ae1a37d | 2844 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 2845 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
2846 | Vminibuf_scroll_window = window; |
2847 | w = XWINDOW (window); | |
d834a2e9 | 2848 | XSETFASTINT (w->hscroll, 0); |
b73ea88e RS |
2849 | set_marker_restricted_both (w->start, buf, 1, 1); |
2850 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 2851 | |
beb4e312 RS |
2852 | /* Run temp-buffer-show-hook, with the chosen window selected |
2853 | and it sbuffer current. */ | |
f52cca03 | 2854 | if (!NILP (Vrun_hooks)) |
2cccc823 | 2855 | { |
f52cca03 RS |
2856 | Lisp_Object tem; |
2857 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2858 | if (!NILP (tem)) |
2859 | { | |
f52cca03 RS |
2860 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2861 | if (!NILP (tem)) | |
2862 | { | |
2863 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
2864 | Lisp_Object prev_window; |
2865 | prev_window = selected_window; | |
2cccc823 | 2866 | |
f52cca03 | 2867 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 2868 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 2869 | select_window_1 (window, 0); |
beb4e312 | 2870 | Fset_buffer (w->buffer); |
f52cca03 | 2871 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 2872 | select_window_1 (prev_window, 0); |
f52cca03 RS |
2873 | unbind_to (count, Qnil); |
2874 | } | |
2cccc823 RS |
2875 | } |
2876 | } | |
2877 | } | |
7ab12479 JB |
2878 | } |
2879 | \f | |
dfcf069d | 2880 | static void |
7ab12479 JB |
2881 | make_dummy_parent (window) |
2882 | Lisp_Object window; | |
2883 | { | |
cffec418 | 2884 | Lisp_Object new; |
7ab12479 | 2885 | register struct window *o, *p; |
cffec418 KH |
2886 | register struct Lisp_Vector *vec; |
2887 | int i; | |
7ab12479 | 2888 | |
cffec418 KH |
2889 | o = XWINDOW (window); |
2890 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2891 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2892 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2893 | vec->size = VECSIZE (struct window); | |
2894 | p = (struct window *)vec; | |
2895 | XSETWINDOW (new, p); | |
7ab12479 | 2896 | |
d834a2e9 | 2897 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2898 | |
2899 | /* Put new into window structure in place of window */ | |
2900 | replace_window (window, new); | |
2901 | ||
2902 | o->next = Qnil; | |
2903 | o->prev = Qnil; | |
2904 | o->vchild = Qnil; | |
2905 | o->hchild = Qnil; | |
2906 | o->parent = new; | |
2907 | ||
2908 | p->start = Qnil; | |
2909 | p->pointm = Qnil; | |
2910 | p->buffer = Qnil; | |
2911 | } | |
2912 | ||
2913 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2914 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2915 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 2916 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
10f96191 RS |
2917 | and put SIZE columns in the first of the pair. In that case,\n\ |
2918 | SIZE includes that window's scroll bar, or the divider column to its right.") | |
77ae0fe3 KH |
2919 | (window, size, horflag) |
2920 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
2921 | { |
2922 | register Lisp_Object new; | |
2923 | register struct window *o, *p; | |
c0807608 | 2924 | FRAME_PTR fo; |
77ae0fe3 | 2925 | register int size_int; |
7ab12479 | 2926 | |
265a9e55 | 2927 | if (NILP (window)) |
7ab12479 JB |
2928 | window = selected_window; |
2929 | else | |
605be8af | 2930 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2931 | |
2932 | o = XWINDOW (window); | |
c0807608 | 2933 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 2934 | |
77ae0fe3 | 2935 | if (NILP (size)) |
7ab12479 | 2936 | { |
265a9e55 | 2937 | if (!NILP (horflag)) |
c0807608 | 2938 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
2939 | the usable space in columns by two. |
2940 | We round up, since the left-hand window may include | |
2941 | a dividing line, while the right-hand may not. */ | |
2942 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 2943 | else |
77ae0fe3 | 2944 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
2945 | } |
2946 | else | |
2947 | { | |
77ae0fe3 KH |
2948 | CHECK_NUMBER (size, 1); |
2949 | size_int = XINT (size); | |
7ab12479 JB |
2950 | } |
2951 | ||
2952 | if (MINI_WINDOW_P (o)) | |
2953 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
2954 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
2955 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 2956 | |
a481b3ea | 2957 | check_min_window_sizes (); |
7ab12479 | 2958 | |
265a9e55 | 2959 | if (NILP (horflag)) |
7ab12479 | 2960 | { |
77ae0fe3 KH |
2961 | if (size_int < window_min_height) |
2962 | error ("Window height %d too small (after splitting)", size_int); | |
2963 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 2964 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 2965 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
2966 | if (NILP (o->parent) |
2967 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2968 | { |
2969 | make_dummy_parent (window); | |
2970 | new = o->parent; | |
2971 | XWINDOW (new)->vchild = window; | |
2972 | } | |
2973 | } | |
2974 | else | |
2975 | { | |
77ae0fe3 KH |
2976 | if (size_int < window_min_width) |
2977 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
2978 | |
2979 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 2980 | error ("Window width %d too small (after splitting)", |
a59fed7e | 2981 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
2982 | if (NILP (o->parent) |
2983 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2984 | { |
2985 | make_dummy_parent (window); | |
2986 | new = o->parent; | |
2987 | XWINDOW (new)->hchild = window; | |
2988 | } | |
2989 | } | |
2990 | ||
2991 | /* Now we know that window's parent is a vertical combination | |
2992 | if we are dividing vertically, or a horizontal combination | |
2993 | if we are making side-by-side windows */ | |
2994 | ||
2995 | windows_or_buffers_changed++; | |
c0807608 | 2996 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
2997 | new = make_window (); |
2998 | p = XWINDOW (new); | |
2999 | ||
44fa5b1e | 3000 | p->frame = o->frame; |
7ab12479 | 3001 | p->next = o->next; |
265a9e55 | 3002 | if (!NILP (p->next)) |
7ab12479 JB |
3003 | XWINDOW (p->next)->prev = new; |
3004 | p->prev = window; | |
3005 | o->next = new; | |
3006 | p->parent = o->parent; | |
3007 | p->buffer = Qt; | |
5500c422 GM |
3008 | p->window_end_valid = Qnil; |
3009 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3010 | |
44fa5b1e | 3011 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3012 | |
265a9e55 | 3013 | if (!NILP (horflag)) |
7ab12479 JB |
3014 | { |
3015 | p->height = o->height; | |
3016 | p->top = o->top; | |
a59fed7e | 3017 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3018 | XSETFASTINT (o->width, size_int); |
3019 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3020 | } |
3021 | else | |
3022 | { | |
3023 | p->left = o->left; | |
3024 | p->width = o->width; | |
77ae0fe3 KH |
3025 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3026 | XSETFASTINT (o->height, size_int); | |
3027 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3028 | } |
3029 | ||
5500c422 GM |
3030 | /* Adjust glyph matrices. */ |
3031 | adjust_glyphs (fo); | |
543f5fb1 | 3032 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3033 | return new; |
3034 | } | |
3035 | \f | |
3036 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
3037 | "Make current window ARG lines bigger.\n\ | |
3038 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
3039 | (arg, side) |
3040 | register Lisp_Object arg, side; | |
7ab12479 | 3041 | { |
413430c5 | 3042 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3043 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3044 | |
3045 | if (! NILP (Vwindow_configuration_change_hook)) | |
3046 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3047 | ||
7ab12479 JB |
3048 | return Qnil; |
3049 | } | |
3050 | ||
3051 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
3052 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
3053 | From program, optional second arg non-nil means shrink sideways arg columns.") |
3054 | (arg, side) | |
3055 | register Lisp_Object arg, side; | |
7ab12479 | 3056 | { |
413430c5 | 3057 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3058 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3059 | |
3060 | if (! NILP (Vwindow_configuration_change_hook)) | |
3061 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3062 | ||
7ab12479 JB |
3063 | return Qnil; |
3064 | } | |
3065 | ||
3066 | int | |
3067 | window_height (window) | |
3068 | Lisp_Object window; | |
3069 | { | |
3070 | register struct window *p = XWINDOW (window); | |
3071 | return XFASTINT (p->height); | |
3072 | } | |
3073 | ||
3074 | int | |
3075 | window_width (window) | |
3076 | Lisp_Object window; | |
3077 | { | |
3078 | register struct window *p = XWINDOW (window); | |
3079 | return XFASTINT (p->width); | |
3080 | } | |
3081 | ||
c1636aa6 | 3082 | |
7ab12479 | 3083 | #define CURBEG(w) \ |
05c2896a | 3084 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
3085 | |
3086 | #define CURSIZE(w) \ | |
05c2896a | 3087 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 | 3088 | |
233a4a2c GM |
3089 | |
3090 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3091 | increase its width. Siblings of the selected window are resized to | |
3092 | fullfil the size request. If they become too small in the process, | |
3093 | they will be deleted. */ | |
7ab12479 | 3094 | |
f984d4fc | 3095 | static void |
86c8e823 GM |
3096 | enlarge_window (window, delta, widthflag) |
3097 | Lisp_Object window; | |
233a4a2c | 3098 | int delta, widthflag; |
7ab12479 | 3099 | { |
86c8e823 | 3100 | Lisp_Object parent, next, prev; |
233a4a2c GM |
3101 | struct window *p; |
3102 | int *sizep, maximum; | |
5e14b1fc AS |
3103 | int (*sizefun) P_ ((Lisp_Object)) |
3104 | = widthflag ? window_width : window_height; | |
233a4a2c | 3105 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3106 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3107 | |
233a4a2c GM |
3108 | /* Check values of window_min_width and window_min_height for |
3109 | validity. */ | |
a481b3ea | 3110 | check_min_window_sizes (); |
7ab12479 | 3111 | |
233a4a2c | 3112 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3113 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3114 | error ("Window is not resizable"); | |
3115 | ||
3116 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3117 | while (1) |
3118 | { | |
3119 | p = XWINDOW (window); | |
3120 | parent = p->parent; | |
233a4a2c | 3121 | |
265a9e55 | 3122 | if (NILP (parent)) |
7ab12479 JB |
3123 | { |
3124 | if (widthflag) | |
3125 | error ("No other window to side of this one"); | |
3126 | break; | |
3127 | } | |
233a4a2c GM |
3128 | |
3129 | if (widthflag | |
3130 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3131 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3132 | break; |
233a4a2c | 3133 | |
7ab12479 JB |
3134 | window = parent; |
3135 | } | |
3136 | ||
05c2896a | 3137 | sizep = &CURSIZE (window); |
7ab12479 | 3138 | |
7ab12479 JB |
3139 | { |
3140 | register int maxdelta; | |
7ab12479 | 3141 | |
265a9e55 | 3142 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
c1636aa6 GM |
3143 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3144 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3145 | widthflag, 0, 0)) |
c1636aa6 GM |
3146 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3147 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3148 | widthflag, 0, 0)) |
44fa5b1e JB |
3149 | /* This is a frame with only one window, a minibuffer-only |
3150 | or a minibufferless frame. */ | |
d5783c40 | 3151 | : (delta = 0)); |
7ab12479 JB |
3152 | |
3153 | if (delta > maxdelta) | |
3154 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3155 | the full frame, or make the only window aside from the |
3156 | minibuffer the full frame. */ | |
7ab12479 | 3157 | delta = maxdelta; |
6b54027b | 3158 | } |
d5783c40 | 3159 | |
f984d4fc | 3160 | if (*sizep + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3161 | { |
543f5fb1 | 3162 | delete_window (window); |
d5783c40 | 3163 | return; |
6b54027b RS |
3164 | } |
3165 | ||
3166 | if (delta == 0) | |
3167 | return; | |
7ab12479 | 3168 | |
db98a733 RS |
3169 | /* Find the total we can get from other siblings. */ |
3170 | maximum = 0; | |
3171 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3172 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3173 | widthflag, 0, 0); |
db98a733 | 3174 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3175 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3176 | widthflag, 0, 0); |
db98a733 RS |
3177 | |
3178 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3179 | if (delta <= maximum) |
7ab12479 | 3180 | { |
db98a733 RS |
3181 | Lisp_Object first_unaffected; |
3182 | Lisp_Object first_affected; | |
233a4a2c | 3183 | int fixed_p; |
db98a733 RS |
3184 | |
3185 | next = p->next; | |
3186 | prev = p->prev; | |
3187 | first_affected = window; | |
3188 | /* Look at one sibling at a time, | |
3189 | moving away from this window in both directions alternately, | |
3190 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3191 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3192 | { |
db98a733 RS |
3193 | if (! NILP (next)) |
3194 | { | |
c1636aa6 | 3195 | int this_one = ((*sizefun) (next) |
233a4a2c | 3196 | - window_min_size (XWINDOW (next), |
f984d4fc | 3197 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3198 | if (!fixed_p) |
3199 | { | |
3200 | if (this_one > delta) | |
3201 | this_one = delta; | |
3202 | ||
3203 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3204 | (*setsizefun) (window, *sizep + this_one, 0); | |
db98a733 | 3205 | |
233a4a2c GM |
3206 | delta -= this_one; |
3207 | } | |
3208 | ||
db98a733 RS |
3209 | next = XWINDOW (next)->next; |
3210 | } | |
233a4a2c | 3211 | |
db98a733 RS |
3212 | if (delta == 0) |
3213 | break; | |
233a4a2c | 3214 | |
db98a733 RS |
3215 | if (! NILP (prev)) |
3216 | { | |
c1636aa6 | 3217 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3218 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3219 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3220 | if (!fixed_p) |
3221 | { | |
3222 | if (this_one > delta) | |
3223 | this_one = delta; | |
3224 | ||
3225 | first_affected = prev; | |
3226 | ||
3227 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3228 | (*setsizefun) (window, *sizep + this_one, 0); | |
3229 | ||
3230 | delta -= this_one; | |
3231 | } | |
3232 | ||
db98a733 RS |
3233 | prev = XWINDOW (prev)->prev; |
3234 | } | |
3235 | } | |
3236 | ||
233a4a2c GM |
3237 | xassert (delta == 0); |
3238 | ||
db98a733 RS |
3239 | /* Now recalculate the edge positions of all the windows affected, |
3240 | based on the new sizes. */ | |
3241 | first_unaffected = next; | |
3242 | prev = first_affected; | |
3243 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3244 | prev = next, next = XWINDOW (next)->next) | |
3245 | { | |
3246 | CURBEG (next) = CURBEG (prev) + (*sizefun) (prev); | |
3247 | /* This does not change size of NEXT, | |
3248 | but it propagates the new top edge to its children */ | |
3249 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3250 | } | |
7ab12479 JB |
3251 | } |
3252 | else | |
3253 | { | |
3254 | register int delta1; | |
3255 | register int opht = (*sizefun) (parent); | |
3256 | ||
3257 | /* If trying to grow this window to or beyond size of the parent, | |
3258 | make delta1 so big that, on shrinking back down, | |
3259 | all the siblings end up with less than one line and are deleted. */ | |
3260 | if (opht <= *sizep + delta) | |
3261 | delta1 = opht * opht * 2; | |
7ab12479 | 3262 | else |
233a4a2c GM |
3263 | { |
3264 | /* Otherwise, make delta1 just right so that if we add | |
3265 | delta1 lines to this window and to the parent, and then | |
3266 | shrink the parent back to its original size, the new | |
3267 | proportional size of this window will increase by delta. | |
3268 | ||
3269 | The function size_window will compute the new height h' | |
3270 | of the window from delta1 as: | |
3271 | ||
3272 | e = delta1/n | |
3273 | x = delta1 - delta1/n * n for the 1st resizable child | |
3274 | h' = h + e + x | |
3275 | ||
3276 | where n is the number of children that can be resized. | |
3277 | We can ignore x by choosing a delta1 that is a multiple of | |
3278 | n. We want the height of this window to come out as | |
3279 | ||
3280 | h' = h + delta | |
3281 | ||
3282 | So, delta1 must be | |
3283 | ||
3284 | h + e = h + delta | |
3285 | delta1/n = delta | |
3286 | delta1 = n * delta. | |
3287 | ||
3288 | The number of children n rquals the number of resizable | |
3289 | children of this window + 1 because we know window itself | |
3290 | is resizable (otherwise we would have signalled an error. */ | |
3291 | ||
3292 | struct window *w = XWINDOW (window); | |
3293 | Lisp_Object s; | |
3294 | int n = 1; | |
3295 | ||
3296 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3297 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3298 | ++n; | |
3299 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3300 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3301 | ++n; | |
3302 | ||
3303 | delta1 = n * delta; | |
3304 | } | |
7ab12479 JB |
3305 | |
3306 | /* Add delta1 lines or columns to this window, and to the parent, | |
3307 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 3308 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
3309 | (*setsizefun) (window, *sizep + delta1, 0); |
3310 | ||
3311 | /* Squeeze out delta1 lines or columns from our parent, | |
3312 | shriking this window and siblings proportionately. | |
3313 | This brings parent back to correct size. | |
3314 | Delta1 was calculated so this makes this window the desired size, | |
3315 | taking it all out of the siblings. */ | |
3316 | (*setsizefun) (parent, opht, 0); | |
3317 | } | |
3318 | ||
d834a2e9 | 3319 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3320 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3321 | |
3322 | /* Adjust glyph matrices. */ | |
3323 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3324 | } |
c1636aa6 | 3325 | |
7ab12479 JB |
3326 | #undef CURBEG |
3327 | #undef CURSIZE | |
3328 | ||
5500c422 | 3329 | |
f984d4fc GM |
3330 | \f |
3331 | /*********************************************************************** | |
3332 | Resizing Mini-Windows | |
3333 | ***********************************************************************/ | |
3334 | ||
3335 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3336 | |
43b4a21f GM |
3337 | enum save_restore_action |
3338 | { | |
3339 | CHECK_ORIG_SIZES, | |
3340 | SAVE_ORIG_SIZES, | |
3341 | RESTORE_ORIG_SIZES | |
3342 | }; | |
3343 | ||
3344 | static int save_restore_orig_size P_ ((struct window *, | |
3345 | enum save_restore_action)); | |
f984d4fc GM |
3346 | |
3347 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3348 | from lowest windows first. */ | |
3349 | ||
3350 | static void | |
3351 | shrink_window_lowest_first (w, height) | |
3352 | struct window *w; | |
3353 | int height; | |
3354 | { | |
3355 | struct window *c; | |
3356 | Lisp_Object child; | |
3357 | int old_height; | |
3358 | ||
3359 | xassert (!MINI_WINDOW_P (w)); | |
3360 | ||
3361 | /* Set redisplay hints. */ | |
3362 | XSETFASTINT (w->last_modified, 0); | |
3363 | XSETFASTINT (w->last_overlay_modified, 0); | |
3364 | windows_or_buffers_changed++; | |
3365 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3366 | ||
3367 | old_height = XFASTINT (w->height); | |
3368 | XSETFASTINT (w->height, height); | |
3369 | ||
3370 | if (!NILP (w->hchild)) | |
3371 | { | |
3372 | for (child = w->hchild; !NILP (child); child = c->next) | |
3373 | { | |
3374 | c = XWINDOW (child); | |
3375 | c->top = w->top; | |
3376 | shrink_window_lowest_first (c, height); | |
3377 | } | |
3378 | } | |
3379 | else if (!NILP (w->vchild)) | |
3380 | { | |
3381 | Lisp_Object last_child; | |
3382 | int delta = old_height - height; | |
3383 | int last_top; | |
3384 | ||
3385 | /* Find the last child. We are taking space from lowest windows | |
3386 | first, so we iterate over children from the last child | |
3387 | backwards. */ | |
3388 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3389 | last_child = child; | |
3390 | ||
3391 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3392 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3393 | { | |
3394 | int this_one; | |
3395 | ||
3396 | c = XWINDOW (child); | |
3397 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3398 | ||
3399 | if (this_one > delta) | |
3400 | this_one = delta; | |
3401 | ||
3402 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3403 | delta -= this_one; | |
3404 | } | |
3405 | ||
3406 | /* Compute new positions. */ | |
3407 | last_top = w->top; | |
3408 | for (child = w->vchild; !NILP (child); child = c->next) | |
3409 | { | |
3410 | c = XWINDOW (child); | |
3411 | c->top = make_number (last_top); | |
3412 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3413 | last_top += XFASTINT (c->height); | |
3414 | } | |
3415 | } | |
3416 | } | |
3417 | ||
3418 | ||
43b4a21f GM |
3419 | /* Save, restore, or check positions and sizes in the window tree |
3420 | rooted at W. ACTION says what to do. | |
f984d4fc | 3421 | |
43b4a21f GM |
3422 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3423 | members are valid for all windows in the window tree. Value is | |
3424 | non-zero if they are valid. | |
3425 | ||
3426 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3427 | orig_top and orig_height for all windows in the tree. | |
3428 | ||
3429 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3430 | values stored in orig_top and orig_height for all windows. */ | |
3431 | ||
3432 | static int | |
3433 | save_restore_orig_size (w, action) | |
f984d4fc | 3434 | struct window *w; |
43b4a21f | 3435 | enum save_restore_action action; |
f984d4fc | 3436 | { |
43b4a21f GM |
3437 | int success_p = 1; |
3438 | ||
f984d4fc GM |
3439 | while (w) |
3440 | { | |
3441 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3442 | { |
3443 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3444 | success_p = 0; | |
3445 | } | |
f984d4fc | 3446 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3447 | { |
3448 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3449 | success_p = 0; | |
3450 | } | |
f984d4fc | 3451 | |
43b4a21f | 3452 | switch (action) |
f984d4fc | 3453 | { |
43b4a21f GM |
3454 | case CHECK_ORIG_SIZES: |
3455 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3456 | return 0; | |
3457 | break; | |
3458 | ||
3459 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3460 | w->orig_top = w->top; |
3461 | w->orig_height = w->height; | |
43b4a21f GM |
3462 | XSETFASTINT (w->last_modified, 0); |
3463 | XSETFASTINT (w->last_overlay_modified, 0); | |
3464 | break; | |
3465 | ||
3466 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3467 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3468 | w->top = w->orig_top; | |
3469 | w->height = w->orig_height; | |
3470 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3471 | XSETFASTINT (w->last_modified, 0); |
3472 | XSETFASTINT (w->last_overlay_modified, 0); | |
3473 | break; | |
3474 | ||
3475 | default: | |
3476 | abort (); | |
f984d4fc | 3477 | } |
43b4a21f | 3478 | |
f984d4fc GM |
3479 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3480 | } | |
43b4a21f GM |
3481 | |
3482 | return success_p; | |
f984d4fc GM |
3483 | } |
3484 | ||
3485 | ||
3486 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3487 | without deleting other windows. */ | |
3488 | ||
3489 | void | |
3490 | grow_mini_window (w, delta) | |
3491 | struct window *w; | |
3492 | int delta; | |
3493 | { | |
3494 | struct frame *f = XFRAME (w->frame); | |
3495 | struct window *root; | |
3496 | ||
3497 | xassert (MINI_WINDOW_P (w)); | |
3498 | xassert (delta >= 0); | |
3499 | ||
3500 | /* Check values of window_min_width and window_min_height for | |
3501 | validity. */ | |
3502 | check_min_window_sizes (); | |
3503 | ||
3504 | /* Compute how much we can enlarge the mini-window without deleting | |
3505 | other windows. */ | |
3506 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3507 | if (delta) | |
3508 | { | |
3509 | int min_height = window_min_size (root, 0, 0, 0); | |
3510 | if (XFASTINT (root->height) - delta < min_height) | |
3511 | delta = XFASTINT (root->height) - min_height; | |
3512 | } | |
3513 | ||
3514 | if (delta) | |
3515 | { | |
3516 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3517 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3518 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3519 | |
3520 | /* Shrink other windows. */ | |
3521 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3522 | ||
3523 | /* Grow the mini-window. */ | |
3524 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root)->height); | |
3525 | w->height = make_number (XFASTINT (w->height) + delta); | |
3526 | XSETFASTINT (w->last_modified, 0); | |
3527 | XSETFASTINT (w->last_overlay_modified, 0); | |
3528 | ||
3529 | adjust_glyphs (f); | |
3530 | } | |
3531 | } | |
3532 | ||
3533 | ||
86c8e823 GM |
3534 | /* Shrink mini-window W. If there is recorded info about window sizes |
3535 | before a call to grow_mini_window, restore recorded window sizes. | |
3536 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3537 | line. */ | |
f984d4fc GM |
3538 | |
3539 | void | |
3540 | shrink_mini_window (w) | |
3541 | struct window *w; | |
3542 | { | |
3543 | struct frame *f = XFRAME (w->frame); | |
3544 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3545 | ||
43b4a21f | 3546 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3547 | { |
43b4a21f | 3548 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3549 | adjust_glyphs (f); |
3550 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3551 | windows_or_buffers_changed = 1; | |
3552 | } | |
86c8e823 GM |
3553 | else if (XFASTINT (w->height) > 1) |
3554 | { | |
3555 | Lisp_Object window; | |
3556 | XSETWINDOW (window, w); | |
3557 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3558 | } | |
f984d4fc GM |
3559 | } |
3560 | ||
3561 | ||
3562 | \f | |
5500c422 GM |
3563 | /* Mark window cursors off for all windows in the window tree rooted |
3564 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3565 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3566 | the frame are cleared. */ | |
3567 | ||
3568 | void | |
3569 | mark_window_cursors_off (w) | |
3570 | struct window *w; | |
3571 | { | |
3572 | while (w) | |
3573 | { | |
3574 | if (!NILP (w->hchild)) | |
3575 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3576 | else if (!NILP (w->vchild)) | |
3577 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3578 | else | |
3579 | w->phys_cursor_on_p = 0; | |
3580 | ||
3581 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3582 | } | |
3583 | } | |
3584 | ||
3585 | ||
7ab12479 JB |
3586 | /* Return number of lines of text (not counting mode line) in W. */ |
3587 | ||
3588 | int | |
3589 | window_internal_height (w) | |
3590 | struct window *w; | |
3591 | { | |
3592 | int ht = XFASTINT (w->height); | |
3593 | ||
3594 | if (MINI_WINDOW_P (w)) | |
3595 | return ht; | |
3596 | ||
265a9e55 JB |
3597 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
3598 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 3599 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
3600 | return ht - 1; |
3601 | ||
3602 | return ht; | |
3603 | } | |
3604 | ||
535e0b8e JB |
3605 | |
3606 | /* Return the number of columns in W. | |
a3c87d4e | 3607 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3608 | separating W from the sibling to its right. */ |
5500c422 | 3609 | |
535e0b8e JB |
3610 | int |
3611 | window_internal_width (w) | |
3612 | struct window *w; | |
3613 | { | |
5500c422 | 3614 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3615 | int width = XINT (w->width); |
3616 | ||
a3c87d4e | 3617 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3618 | /* Scroll bars occupy a few columns. */ |
3619 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3620 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3621 | /* The column of `|' characters separating side-by-side windows | |
3622 | occupies one column only. */ | |
3623 | width -= 1; | |
3624 | ||
3625 | /* On window-systems, areas to the left and right of the window | |
3626 | are used to display bitmaps there. */ | |
3627 | if (FRAME_WINDOW_P (f)) | |
b46dfc64 | 3628 | width -= FRAME_FLAGS_AREA_COLS (f); |
111e5992 RS |
3629 | |
3630 | return width; | |
535e0b8e JB |
3631 | } |
3632 | ||
5500c422 GM |
3633 | \f |
3634 | /************************************************************************ | |
3635 | Window Scrolling | |
3636 | ***********************************************************************/ | |
535e0b8e | 3637 | |
5500c422 GM |
3638 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
3639 | one screen-full, which is defined as the height of the window minus | |
3640 | next_screen_context_lines. If WHOLE is zero, scroll up N lines | |
3641 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3642 | means don't signal an error if we try to move over BEGV or ZV, | |
3643 | respectively. */ | |
7ab12479 | 3644 | |
101d1605 RS |
3645 | static void |
3646 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3647 | Lisp_Object window; |
3648 | int n; | |
101d1605 | 3649 | int whole; |
f8026fd8 | 3650 | int noerror; |
5500c422 GM |
3651 | { |
3652 | /* If we must, use the pixel-based version which is much slower than | |
3653 | the line-based one but can handle varying line heights. */ | |
3654 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3655 | window_scroll_pixel_based (window, n, whole, noerror); | |
3656 | else | |
3657 | window_scroll_line_based (window, n, whole, noerror); | |
3658 | } | |
3659 | ||
3660 | ||
3661 | /* Implementation of window_scroll that works based on pixel line | |
3662 | heights. See the comment of window_scroll for parameter | |
3663 | descriptions. */ | |
3664 | ||
3665 | static void | |
3666 | window_scroll_pixel_based (window, n, whole, noerror) | |
3667 | Lisp_Object window; | |
3668 | int n; | |
3669 | int whole; | |
3670 | int noerror; | |
3671 | { | |
3672 | struct it it; | |
3673 | struct window *w = XWINDOW (window); | |
3674 | struct text_pos start; | |
3675 | Lisp_Object tem; | |
3676 | int this_scroll_margin; | |
3677 | int preserve_y; | |
3678 | ||
3679 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3680 | ||
3681 | /* If PT is not visible in WINDOW, move back one half of | |
3682 | the screen. */ | |
3683 | XSETFASTINT (tem, PT); | |
3684 | tem = Fpos_visible_in_window_p (tem, window); | |
3685 | if (NILP (tem)) | |
3686 | { | |
3687 | /* Move backward half the height of the window. Performance note: | |
3688 | vmotion used here is about 10% faster, but would give wrong | |
3689 | results for variable height lines. */ | |
3690 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3691 | it.current_y = it.last_visible_y; | |
3692 | move_it_vertically (&it, -it.last_visible_y / 2); | |
3693 | ||
3694 | /* The function move_iterator_vertically may move over more than | |
3695 | the specified y-distance. If it->w is small, e.g. a | |
3696 | mini-buffer window, we may end up in front of the window's | |
3697 | display area. This is the case when Start displaying at the | |
3698 | start of the line containing PT in this case. */ | |
3699 | if (it.current_y <= 0) | |
3700 | { | |
3701 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3702 | move_it_vertically (&it, 0); | |
3703 | it.current_y = 0; | |
3704 | } | |
3705 | ||
3706 | start = it.current.pos; | |
3707 | } | |
3708 | ||
3709 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3710 | point in the same window line as it is now, so get that line. */ | |
3711 | if (!NILP (Vscroll_preserve_screen_position)) | |
3712 | { | |
3713 | start_display (&it, w, start); | |
3714 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3715 | preserve_y = it.current_y; | |
3716 | } | |
3717 | else | |
3718 | preserve_y = -1; | |
3719 | ||
3720 | /* Move iterator it from start the specified distance forward or | |
3721 | backward. The result is the new window start. */ | |
3722 | start_display (&it, w, start); | |
3723 | if (whole) | |
3724 | { | |
3725 | int screen_full = (it.last_visible_y | |
3726 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); | |
3727 | int direction = n < 0 ? -1 : 1; | |
3728 | move_it_vertically (&it, direction * screen_full); | |
3729 | } | |
3730 | else | |
3731 | move_it_by_lines (&it, n, 1); | |
3732 | ||
3733 | /* End if we end up at ZV or BEGV. */ | |
3734 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
3735 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
3736 | { | |
3737 | if (noerror) | |
3738 | return; | |
3739 | else if (IT_CHARPOS (it) == ZV) | |
3740 | Fsignal (Qend_of_buffer, Qnil); | |
3741 | else | |
3742 | Fsignal (Qbeginning_of_buffer, Qnil); | |
3743 | } | |
3744 | ||
3745 | /* Set the window start, and set up the window for redisplay. */ | |
3746 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), w->buffer); | |
3747 | w->start_at_line_beg = Fbolp (); | |
3748 | w->update_mode_line = Qt; | |
3749 | XSETFASTINT (w->last_modified, 0); | |
3750 | XSETFASTINT (w->last_overlay_modified, 0); | |
3751 | /* Set force_start so that redisplay_window will run the | |
3752 | window-scroll-functions. */ | |
3753 | w->force_start = Qt; | |
3754 | ||
3755 | it.current_y = it.vpos = 0; | |
3756 | ||
3757 | /* Preserve the screen position if we must. */ | |
3758 | if (preserve_y >= 0) | |
3759 | { | |
3760 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
3761 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3762 | } | |
3763 | else | |
3764 | { | |
3765 | /* Move PT out of scroll margins. */ | |
3766 | this_scroll_margin = max (0, scroll_margin); | |
3767 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
3768 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
3769 | ||
3770 | if (n > 0) | |
3771 | { | |
3772 | /* We moved the window start towards ZV, so PT may be now | |
3773 | in the scroll margin at the top. */ | |
3774 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3775 | while (it.current_y < this_scroll_margin) | |
3776 | move_it_by_lines (&it, 1, 1); | |
3777 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3778 | } | |
3779 | else if (n < 0) | |
3780 | { | |
3781 | /* We moved the window start towards BEGV, so PT may be now | |
3782 | in the scroll margin at the bottom. */ | |
3783 | move_it_to (&it, PT, -1, | |
3784 | it.last_visible_y - this_scroll_margin - 1, -1, | |
3785 | MOVE_TO_POS | MOVE_TO_Y); | |
3786 | ||
3787 | /* Don't put point on a partially visible line at the end. */ | |
3788 | if (it.current_y + it.max_ascent + it.max_descent | |
3789 | > it.last_visible_y) | |
3790 | move_it_by_lines (&it, -1, 0); | |
3791 | ||
3792 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3793 | } | |
3794 | } | |
3795 | } | |
3796 | ||
3797 | ||
3798 | /* Implementation of window_scroll that works based on screen lines. | |
3799 | See the comment of window_scroll for parameter descriptions. */ | |
3800 | ||
3801 | static void | |
3802 | window_scroll_line_based (window, n, whole, noerror) | |
3803 | Lisp_Object window; | |
3804 | int n; | |
3805 | int whole; | |
3806 | int noerror; | |
7ab12479 JB |
3807 | { |
3808 | register struct window *w = XWINDOW (window); | |
5500c422 | 3809 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 3810 | register int pos, pos_byte; |
7ab12479 JB |
3811 | register int ht = window_internal_height (w); |
3812 | register Lisp_Object tem; | |
3813 | int lose; | |
5500c422 | 3814 | Lisp_Object bolp; |
345d45b2 | 3815 | int startpos; |
101d1605 RS |
3816 | struct position posit; |
3817 | int original_vpos; | |
3818 | ||
3819 | startpos = marker_position (w->start); | |
3820 | ||
3821 | posit = *compute_motion (startpos, 0, 0, 0, | |
3822 | PT, ht, 0, | |
3823 | window_internal_width (w), XINT (w->hscroll), | |
3824 | 0, w); | |
3825 | original_vpos = posit.vpos; | |
0a1f771a | 3826 | |
d834a2e9 | 3827 | XSETFASTINT (tem, PT); |
7ab12479 JB |
3828 | tem = Fpos_visible_in_window_p (tem, window); |
3829 | ||
265a9e55 | 3830 | if (NILP (tem)) |
7ab12479 | 3831 | { |
cd2be1dd | 3832 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 3833 | startpos = PT; |
7ab12479 JB |
3834 | } |
3835 | ||
345d45b2 | 3836 | SET_PT (startpos); |
5ce7b543 | 3837 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 3838 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 3839 | pos = PT; |
b73ea88e | 3840 | pos_byte = PT_BYTE; |
7ab12479 | 3841 | bolp = Fbolp (); |
b73ea88e | 3842 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
3843 | |
3844 | if (lose) | |
f8026fd8 JB |
3845 | { |
3846 | if (noerror) | |
3847 | return; | |
3848 | else | |
3849 | Fsignal (Qbeginning_of_buffer, Qnil); | |
3850 | } | |
7ab12479 JB |
3851 | |
3852 | if (pos < ZV) | |
7ab12479 | 3853 | { |
0c7da84e RS |
3854 | int this_scroll_margin = scroll_margin; |
3855 | ||
3856 | /* Don't use a scroll margin that is negative or too large. */ | |
3857 | if (this_scroll_margin < 0) | |
3858 | this_scroll_margin = 0; | |
3859 | ||
3860 | if (XINT (w->height) < 4 * scroll_margin) | |
3861 | this_scroll_margin = XINT (w->height) / 4; | |
3862 | ||
b73ea88e | 3863 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
3864 | w->start_at_line_beg = bolp; |
3865 | w->update_mode_line = Qt; | |
d834a2e9 | 3866 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3867 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
3868 | /* Set force_start so that redisplay_window will run |
3869 | the window-scroll-functions. */ | |
3870 | w->force_start = Qt; | |
0c7da84e | 3871 | |
5500c422 | 3872 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 3873 | { |
b73ea88e | 3874 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 3875 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 3876 | } |
101d1605 RS |
3877 | /* If we scrolled forward, put point enough lines down |
3878 | that it is outside the scroll margin. */ | |
3879 | else if (n > 0) | |
0c7da84e | 3880 | { |
101d1605 RS |
3881 | int top_margin; |
3882 | ||
3883 | if (this_scroll_margin > 0) | |
3884 | { | |
b73ea88e | 3885 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
3886 | Fvertical_motion (make_number (this_scroll_margin), window); |
3887 | top_margin = PT; | |
3888 | } | |
3889 | else | |
3890 | top_margin = pos; | |
3891 | ||
3892 | if (top_margin <= opoint) | |
b73ea88e | 3893 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 3894 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 3895 | { |
b73ea88e | 3896 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
3897 | Fvertical_motion (make_number (original_vpos), window); |
3898 | } | |
9317a85d | 3899 | else |
335406fc | 3900 | SET_PT (top_margin); |
0c7da84e | 3901 | } |
101d1605 | 3902 | else if (n < 0) |
7ab12479 | 3903 | { |
101d1605 RS |
3904 | int bottom_margin; |
3905 | ||
0c7da84e RS |
3906 | /* If we scrolled backward, put point near the end of the window |
3907 | but not within the scroll margin. */ | |
b73ea88e | 3908 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 3909 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
3910 | if (XFASTINT (tem) == ht - this_scroll_margin) |
3911 | bottom_margin = PT; | |
3912 | else | |
3913 | bottom_margin = PT + 1; | |
3914 | ||
3915 | if (bottom_margin > opoint) | |
b73ea88e | 3916 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 3917 | else |
101d1605 | 3918 | { |
5500c422 | 3919 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 3920 | { |
b73ea88e | 3921 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
3922 | Fvertical_motion (make_number (original_vpos), window); |
3923 | } | |
3924 | else | |
3925 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 3926 | } |
7ab12479 JB |
3927 | } |
3928 | } | |
3929 | else | |
f8026fd8 JB |
3930 | { |
3931 | if (noerror) | |
3932 | return; | |
3933 | else | |
3934 | Fsignal (Qend_of_buffer, Qnil); | |
3935 | } | |
7ab12479 | 3936 | } |
5500c422 GM |
3937 | |
3938 | ||
3939 | /* Scroll selected_window up or down. If N is nil, scroll a | |
3940 | screen-full which is defined as the height of the window minus | |
3941 | next_screen_context_lines. If N is the symbol `-', scroll. | |
3942 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
3943 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
3944 | |
3945 | static void | |
3946 | scroll_command (n, direction) | |
5500c422 | 3947 | Lisp_Object n; |
7ab12479 JB |
3948 | int direction; |
3949 | { | |
3950 | register int defalt; | |
3951 | int count = specpdl_ptr - specpdl; | |
3952 | ||
5500c422 GM |
3953 | xassert (abs (direction) == 1); |
3954 | ||
3955 | /* If selected window's buffer isn't current, make it current for | |
3956 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 3957 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
3958 | { |
3959 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
3960 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
3961 | |
3962 | /* Make redisplay consider other windows than just selected_window. */ | |
3963 | ++windows_or_buffers_changed; | |
95605e15 | 3964 | } |
7ab12479 JB |
3965 | |
3966 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
3967 | - next_screen_context_lines); | |
3968 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
3969 | ||
265a9e55 | 3970 | if (NILP (n)) |
101d1605 | 3971 | window_scroll (selected_window, defalt, 1, 0); |
7ab12479 | 3972 | else if (EQ (n, Qminus)) |
101d1605 | 3973 | window_scroll (selected_window, - defalt, 1, 0); |
7ab12479 JB |
3974 | else |
3975 | { | |
3976 | n = Fprefix_numeric_value (n); | |
101d1605 | 3977 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 3978 | } |
95605e15 JB |
3979 | |
3980 | unbind_to (count, Qnil); | |
7ab12479 JB |
3981 | } |
3982 | ||
3983 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
3984 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
3985 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 3986 | Negative ARG means scroll downward.\n\ |
dd394ff9 KH |
3987 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
3988 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
3989 | (arg) |
3990 | Lisp_Object arg; | |
7ab12479 | 3991 | { |
413430c5 | 3992 | scroll_command (arg, 1); |
7ab12479 JB |
3993 | return Qnil; |
3994 | } | |
3995 | ||
3996 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a5fcbc4e | 3997 | "Scroll text of current window down ARG lines; or near full screen if no ARG.\n\ |
7ab12479 | 3998 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
279e0e0c | 3999 | Negative ARG means scroll upward.\n\ |
dd394ff9 KH |
4000 | If ARG is the atom `-', scroll upward by nearly full screen.\n\ |
4001 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4002 | (arg) |
4003 | Lisp_Object arg; | |
7ab12479 | 4004 | { |
413430c5 | 4005 | scroll_command (arg, -1); |
7ab12479 JB |
4006 | return Qnil; |
4007 | } | |
ccd0664b RS |
4008 | \f |
4009 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
4010 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 4011 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
4012 | specifies the window.\n\ |
4013 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
4014 | showing that buffer is used.") | |
eb16ec06 | 4015 | () |
7ab12479 | 4016 | { |
ccd0664b | 4017 | Lisp_Object window; |
7ab12479 JB |
4018 | |
4019 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4020 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4021 | window = Vminibuf_scroll_window; |
4022 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4023 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4024 | { |
4025 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4026 | if (NILP (window)) |
53f76081 | 4027 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4028 | } |
4029 | else | |
dbc4e1c1 JB |
4030 | { |
4031 | /* Nothing specified; look for a neighboring window on the same | |
4032 | frame. */ | |
4033 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4034 | ||
4035 | if (EQ (window, selected_window)) | |
4036 | /* That didn't get us anywhere; look for a window on another | |
4037 | visible frame. */ | |
4038 | do | |
4039 | window = Fnext_window (window, Qnil, Qt); | |
4040 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4041 | && ! EQ (window, selected_window)); | |
4042 | } | |
4043 | ||
605be8af | 4044 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
4045 | |
4046 | if (EQ (window, selected_window)) | |
4047 | error ("There is no other window"); | |
4048 | ||
ccd0664b RS |
4049 | return window; |
4050 | } | |
4051 | ||
4052 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
4053 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
dd394ff9 | 4054 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
ccd0664b RS |
4055 | The next window is the one below the current one; or the one at the top\n\ |
4056 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
dd394ff9 KH |
4057 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4058 | When calling from a program, supply as argument a number, nil, or `-'.\n\ | |
ccd0664b RS |
4059 | \n\ |
4060 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
4061 | specifies the window to scroll.\n\ | |
4062 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
4063 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
4064 | (arg) |
4065 | register Lisp_Object arg; | |
ccd0664b RS |
4066 | { |
4067 | register Lisp_Object window; | |
2f787aa3 | 4068 | register int defalt; |
ccd0664b RS |
4069 | register struct window *w; |
4070 | register int count = specpdl_ptr - specpdl; | |
4071 | ||
4072 | window = Fother_window_for_scrolling (); | |
4073 | ||
7ab12479 | 4074 | w = XWINDOW (window); |
2f787aa3 KH |
4075 | defalt = window_internal_height (w) - next_screen_context_lines; |
4076 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
4077 | |
4078 | /* Don't screw up if window_scroll gets an error. */ | |
4079 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4080 | ++windows_or_buffers_changed; |
7ab12479 JB |
4081 | |
4082 | Fset_buffer (w->buffer); | |
4083 | SET_PT (marker_position (w->pointm)); | |
4084 | ||
413430c5 | 4085 | if (NILP (arg)) |
101d1605 | 4086 | window_scroll (window, defalt, 1, 1); |
413430c5 | 4087 | else if (EQ (arg, Qminus)) |
101d1605 | 4088 | window_scroll (window, -defalt, 1, 1); |
7ab12479 JB |
4089 | else |
4090 | { | |
413430c5 EN |
4091 | if (CONSP (arg)) |
4092 | arg = Fcar (arg); | |
4093 | CHECK_NUMBER (arg, 0); | |
101d1605 | 4094 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4095 | } |
4096 | ||
b73ea88e | 4097 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4098 | unbind_to (count, Qnil); |
7ab12479 JB |
4099 | |
4100 | return Qnil; | |
4101 | } | |
4102 | \f | |
644b477c | 4103 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
4104 | "Scroll selected window display ARG columns left.\n\ |
4105 | Default for ARG is window width minus 2.") | |
4106 | (arg) | |
4107 | register Lisp_Object arg; | |
4108 | { | |
4109 | ||
265a9e55 | 4110 | if (NILP (arg)) |
d834a2e9 | 4111 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4112 | else |
4113 | arg = Fprefix_numeric_value (arg); | |
4114 | ||
4115 | return | |
4116 | Fset_window_hscroll (selected_window, | |
4117 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4118 | + XINT (arg))); | |
4119 | } | |
4120 | ||
644b477c | 4121 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
4122 | "Scroll selected window display ARG columns right.\n\ |
4123 | Default for ARG is window width minus 2.") | |
4124 | (arg) | |
4125 | register Lisp_Object arg; | |
4126 | { | |
265a9e55 | 4127 | if (NILP (arg)) |
d834a2e9 | 4128 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4129 | else |
4130 | arg = Fprefix_numeric_value (arg); | |
4131 | ||
4132 | return | |
4133 | Fset_window_hscroll (selected_window, | |
4134 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4135 | - XINT (arg))); | |
4136 | } | |
4137 | ||
4138 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 4139 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 4140 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 4141 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 4142 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 4143 | redraws with point in the center of the current window.") |
413430c5 EN |
4144 | (arg) |
4145 | register Lisp_Object arg; | |
7ab12479 JB |
4146 | { |
4147 | register struct window *w = XWINDOW (selected_window); | |
4148 | register int ht = window_internal_height (w); | |
113d9015 | 4149 | struct position pos; |
478292ed RS |
4150 | struct buffer *buf = XBUFFER (w->buffer); |
4151 | struct buffer *obuf = current_buffer; | |
7ab12479 | 4152 | |
413430c5 | 4153 | if (NILP (arg)) |
7ab12479 | 4154 | { |
44fa5b1e | 4155 | extern int frame_garbaged; |
7ab12479 | 4156 | |
527b6458 | 4157 | Fredraw_frame (w->frame); |
44fa5b1e | 4158 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 4159 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 4160 | } |
413430c5 | 4161 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 4162 | { |
413430c5 | 4163 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
4164 | } |
4165 | else | |
4166 | { | |
413430c5 EN |
4167 | arg = Fprefix_numeric_value (arg); |
4168 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
4169 | } |
4170 | ||
413430c5 EN |
4171 | if (XINT (arg) < 0) |
4172 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 4173 | |
478292ed | 4174 | set_buffer_internal (buf); |
6ec8bbd2 | 4175 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 4176 | |
b73ea88e RS |
4177 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
4178 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
4179 | || FETCH_BYTE (pos.bytepos - 1) == '\n') | |
113d9015 | 4180 | ? Qt : Qnil); |
7ab12479 | 4181 | w->force_start = Qt; |
478292ed | 4182 | set_buffer_internal (obuf); |
7ab12479 JB |
4183 | |
4184 | return Qnil; | |
4185 | } | |
4186 | \f | |
4187 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
4188 | 1, 1, "P", | |
4189 | "Position point relative to window.\n\ | |
19e3bf0a | 4190 | With no argument, position point at center of window.\n\ |
d81724c7 RS |
4191 | An argument specifies vertical position within the window;\n\ |
4192 | zero means top of window, negative means relative to bottom of window.") | |
7ab12479 JB |
4193 | (arg) |
4194 | register Lisp_Object arg; | |
4195 | { | |
4196 | register struct window *w = XWINDOW (selected_window); | |
4197 | register int height = window_internal_height (w); | |
4198 | register int start; | |
540b6aa0 | 4199 | Lisp_Object window; |
7ab12479 | 4200 | |
265a9e55 | 4201 | if (NILP (arg)) |
d834a2e9 | 4202 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
4203 | else |
4204 | { | |
4205 | arg = Fprefix_numeric_value (arg); | |
4206 | if (XINT (arg) < 0) | |
4207 | XSETINT (arg, XINT (arg) + height); | |
4208 | } | |
4209 | ||
4210 | start = marker_position (w->start); | |
74112613 | 4211 | XSETWINDOW (window, w); |
7ab12479 JB |
4212 | if (start < BEGV || start > ZV) |
4213 | { | |
cd2be1dd | 4214 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4215 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4216 | w->start_at_line_beg = Fbolp (); |
4217 | w->force_start = Qt; | |
4218 | } | |
4219 | else | |
b73ea88e | 4220 | Fgoto_char (w->start); |
7ab12479 | 4221 | |
540b6aa0 | 4222 | return Fvertical_motion (arg, window); |
7ab12479 | 4223 | } |
5500c422 GM |
4224 | |
4225 | ||
7ab12479 | 4226 | \f |
5500c422 GM |
4227 | /*********************************************************************** |
4228 | Window Configuration | |
4229 | ***********************************************************************/ | |
4230 | ||
7ab12479 JB |
4231 | struct save_window_data |
4232 | { | |
f5ccc0cc | 4233 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4234 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4235 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4236 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4237 | Lisp_Object selected_frame; |
7ab12479 JB |
4238 | Lisp_Object current_window; |
4239 | Lisp_Object current_buffer; | |
4240 | Lisp_Object minibuf_scroll_window; | |
4241 | Lisp_Object root_window; | |
bdc727bf | 4242 | Lisp_Object focus_frame; |
756b6edc RS |
4243 | /* Record the values of window-min-width and window-min-height |
4244 | so that window sizes remain consistent with them. */ | |
4245 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4246 | /* A vector, each of whose elements is a struct saved_window |
4247 | for one window. */ | |
7ab12479 JB |
4248 | Lisp_Object saved_windows; |
4249 | }; | |
ff06df24 | 4250 | |
cbff28e8 | 4251 | /* This is saved as a Lisp_Vector */ |
7ab12479 JB |
4252 | struct saved_window |
4253 | { | |
4254 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 4255 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
4256 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
4257 | ||
4258 | Lisp_Object window; | |
4259 | Lisp_Object buffer, start, pointm, mark; | |
4260 | Lisp_Object left, top, width, height, hscroll; | |
4261 | Lisp_Object parent, prev; | |
4262 | Lisp_Object start_at_line_beg; | |
4263 | Lisp_Object display_table; | |
4264 | }; | |
4265 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
4266 | ||
4267 | #define SAVED_WINDOW_N(swv,n) \ | |
4268 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4269 | ||
4270 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
cbff28e8 | 4271 | "Return t if OBJECT is a window-configuration object.") |
413430c5 EN |
4272 | (object) |
4273 | Lisp_Object object; | |
7ab12479 | 4274 | { |
413430c5 | 4275 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4276 | return Qt; |
4277 | return Qnil; | |
4278 | } | |
4279 | ||
3f8ab7bd RS |
4280 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
4281 | "Return the frame that CONFIG, a window-configuration object, is about.") | |
4282 | (config) | |
4283 | Lisp_Object config; | |
4284 | { | |
4285 | register struct save_window_data *data; | |
4286 | struct Lisp_Vector *saved_windows; | |
4287 | ||
4288 | if (! WINDOW_CONFIGURATIONP (config)) | |
4289 | wrong_type_argument (Qwindow_configuration_p, config); | |
4290 | ||
4291 | data = (struct save_window_data *) XVECTOR (config); | |
4292 | saved_windows = XVECTOR (data->saved_windows); | |
4293 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4294 | } | |
4295 | ||
d5b2799e RS |
4296 | DEFUN ("set-window-configuration", Fset_window_configuration, |
4297 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
4298 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
4299 | CONFIGURATION must be a value previously returned\n\ | |
3f8ab7bd RS |
4300 | by `current-window-configuration' (which see).\n\ |
4301 | If CONFIGURATION was made from a frame that is now deleted,\n\ | |
4302 | only frame-independent values can be restored. In this case,\n\ | |
4303 | the return value is nil. Otherwise the value is t.") | |
4304 | (configuration) | |
2f83aebe | 4305 | Lisp_Object configuration; |
7ab12479 | 4306 | { |
7ab12479 JB |
4307 | register struct save_window_data *data; |
4308 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4309 | Lisp_Object new_current_buffer; |
fd482be5 | 4310 | Lisp_Object frame; |
44fa5b1e | 4311 | FRAME_PTR f; |
d2b35234 | 4312 | int old_point = -1; |
7ab12479 | 4313 | |
017b2bad | 4314 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4315 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4316 | |
2f83aebe | 4317 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4318 | saved_windows = XVECTOR (data->saved_windows); |
4319 | ||
7ab12479 | 4320 | new_current_buffer = data->current_buffer; |
265a9e55 | 4321 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4322 | new_current_buffer = Qnil; |
d2b35234 RS |
4323 | else |
4324 | { | |
4325 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4326 | old_point = PT; | |
cbff28e8 | 4327 | |
d2b35234 | 4328 | } |
7ab12479 | 4329 | |
fd482be5 JB |
4330 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4331 | f = XFRAME (frame); | |
9ace597f | 4332 | |
fd482be5 JB |
4333 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4334 | However, there is other stuff we should still try to do below. */ | |
4335 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4336 | { |
fd482be5 JB |
4337 | register struct window *w; |
4338 | register struct saved_window *p; | |
5500c422 GM |
4339 | struct window *root_window; |
4340 | struct window **leaf_windows; | |
4341 | int n_leaf_windows; | |
4342 | int k, i; | |
fd482be5 JB |
4343 | |
4344 | /* If the frame has been resized since this window configuration was | |
4345 | made, we change the frame to the size specified in the | |
4346 | configuration, restore the configuration, and then resize it | |
4347 | back. We keep track of the prevailing height in these variables. */ | |
4348 | int previous_frame_height = FRAME_HEIGHT (f); | |
4349 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4350 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4351 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4352 | |
d2b35234 RS |
4353 | /* The mouse highlighting code could get screwed up |
4354 | if it runs during this. */ | |
4355 | BLOCK_INPUT; | |
4356 | ||
fd482be5 JB |
4357 | if (XFASTINT (data->frame_height) != previous_frame_height |
4358 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4359 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4360 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4361 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4362 | if (XFASTINT (data->frame_menu_bar_lines) |
4363 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4364 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4365 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4366 | if (XFASTINT (data->frame_tool_bar_lines) |
4367 | != previous_frame_tool_bar_lines) | |
4368 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4369 | #endif |
217f2871 | 4370 | #endif |
fd482be5 | 4371 | |
596ae0cf RS |
4372 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4373 | { | |
4374 | w = XWINDOW (selected_window); | |
4375 | set_marker_both (w->pointm, | |
4376 | w->buffer, | |
4377 | BUF_PT (XBUFFER (w->buffer)), | |
4378 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4379 | } | |
4380 | ||
fd482be5 | 4381 | windows_or_buffers_changed++; |
29aeee73 | 4382 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4383 | |
5500c422 GM |
4384 | /* Problem: Freeing all matrices and later allocating them again |
4385 | is a serious redisplay flickering problem. What we would | |
4386 | really like to do is to free only those matrices not reused | |
4387 | below. */ | |
4388 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4389 | leaf_windows | |
4390 | = (struct window **) alloca (count_windows (root_window) | |
4391 | * sizeof (struct window *)); | |
4392 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4393 | ||
756b6edc RS |
4394 | /* Temporarily avoid any problems with windows that are smaller |
4395 | than they are supposed to be. */ | |
4396 | window_min_height = 1; | |
4397 | window_min_width = 1; | |
4398 | ||
fd482be5 JB |
4399 | /* Kludge Alert! |
4400 | Mark all windows now on frame as "deleted". | |
4401 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4402 | |
fd482be5 JB |
4403 | Save their current buffers in their height fields, since we may |
4404 | need it later, if a buffer saved in the configuration is now | |
4405 | dead. */ | |
4406 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4407 | ||
4408 | for (k = 0; k < saved_windows->size; k++) | |
4409 | { | |
4410 | p = SAVED_WINDOW_N (saved_windows, k); | |
4411 | w = XWINDOW (p->window); | |
4412 | w->next = Qnil; | |
7ab12479 | 4413 | |
fd482be5 JB |
4414 | if (!NILP (p->parent)) |
4415 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4416 | XFASTINT (p->parent))->window; | |
4417 | else | |
4418 | w->parent = Qnil; | |
7ab12479 | 4419 | |
fd482be5 | 4420 | if (!NILP (p->prev)) |
7ab12479 | 4421 | { |
fd482be5 JB |
4422 | w->prev = SAVED_WINDOW_N (saved_windows, |
4423 | XFASTINT (p->prev))->window; | |
4424 | XWINDOW (w->prev)->next = p->window; | |
4425 | } | |
4426 | else | |
4427 | { | |
4428 | w->prev = Qnil; | |
4429 | if (!NILP (w->parent)) | |
4430 | { | |
4431 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4432 | { | |
4433 | XWINDOW (w->parent)->vchild = p->window; | |
4434 | XWINDOW (w->parent)->hchild = Qnil; | |
4435 | } | |
4436 | else | |
4437 | { | |
4438 | XWINDOW (w->parent)->hchild = p->window; | |
4439 | XWINDOW (w->parent)->vchild = Qnil; | |
4440 | } | |
4441 | } | |
4442 | } | |
4443 | ||
4444 | /* If we squirreled away the buffer in the window's height, | |
4445 | restore it now. */ | |
017b2bad | 4446 | if (BUFFERP (w->height)) |
fd482be5 JB |
4447 | w->buffer = w->height; |
4448 | w->left = p->left; | |
4449 | w->top = p->top; | |
4450 | w->width = p->width; | |
4451 | w->height = p->height; | |
4452 | w->hscroll = p->hscroll; | |
4453 | w->display_table = p->display_table; | |
d834a2e9 | 4454 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4455 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4456 | |
4457 | /* Reinstall the saved buffer and pointers into it. */ | |
4458 | if (NILP (p->buffer)) | |
4459 | w->buffer = p->buffer; | |
4460 | else | |
4461 | { | |
4462 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4463 | /* If saved buffer is alive, install it. */ | |
4464 | { | |
4465 | w->buffer = p->buffer; | |
4466 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4467 | set_marker_restricted (w->start, p->start, w->buffer); |
4468 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4469 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4470 | p->mark, w->buffer); |
fd482be5 JB |
4471 | |
4472 | /* As documented in Fcurrent_window_configuration, don't | |
4473 | save the location of point in the buffer which was current | |
4474 | when the window configuration was recorded. */ | |
6b54027b RS |
4475 | if (!EQ (p->buffer, new_current_buffer) |
4476 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4477 | Fgoto_char (w->pointm); |
4478 | } | |
52a68e98 RS |
4479 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4480 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4481 | { |
fd482be5 JB |
4482 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4483 | /* This will set the markers to beginning of visible | |
4484 | range. */ | |
4485 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4486 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4487 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4488 | } |
4489 | else | |
fd482be5 | 4490 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4491 | are real. */ |
7ab12479 | 4492 | { |
fd482be5 JB |
4493 | /* Set window markers at start of visible range. */ |
4494 | if (XMARKER (w->start)->buffer == 0) | |
4495 | set_marker_restricted (w->start, make_number (0), | |
4496 | w->buffer); | |
4497 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4498 | set_marker_restricted_both (w->pointm, w->buffer, |
4499 | BUF_PT (XBUFFER (w->buffer)), | |
4500 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4501 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4502 | } |
4503 | } | |
4504 | } | |
9ace597f | 4505 | |
fd482be5 JB |
4506 | FRAME_ROOT_WINDOW (f) = data->root_window; |
4507 | Fselect_window (data->current_window); | |
396a830c RS |
4508 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
4509 | = selected_window; | |
7ab12479 | 4510 | |
db269683 | 4511 | if (NILP (data->focus_frame) |
017b2bad | 4512 | || (FRAMEP (data->focus_frame) |
db269683 JB |
4513 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
4514 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 4515 | |
fd482be5 JB |
4516 | #if 0 /* I don't understand why this is needed, and it causes problems |
4517 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 4518 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
4519 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
4520 | Qnil, 0); | |
fd482be5 JB |
4521 | #endif |
4522 | ||
4523 | /* Set the screen height to the value it had before this function. */ | |
4524 | if (previous_frame_height != FRAME_HEIGHT (f) | |
4525 | || previous_frame_width != FRAME_WIDTH (f)) | |
4526 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 4527 | 0, 0, 0); |
e3678b64 | 4528 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 4529 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
4530 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
4531 | make_number (0)); | |
4314246f | 4532 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4533 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
4534 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
4535 | make_number (0)); | |
4314246f | 4536 | #endif |
217f2871 | 4537 | #endif |
d2b35234 | 4538 | |
5500c422 GM |
4539 | /* Now, free glyph matrices in windows that were not reused. */ |
4540 | for (i = 0; i < n_leaf_windows; ++i) | |
4541 | if (NILP (leaf_windows[i]->buffer)) | |
4542 | { | |
4543 | /* Assert it's not reused as a combination. */ | |
4544 | xassert (NILP (leaf_windows[i]->hchild) | |
4545 | && NILP (leaf_windows[i]->vchild)); | |
4546 | free_window_matrices (leaf_windows[i]); | |
4547 | SET_FRAME_GARBAGED (f); | |
4548 | } | |
4549 | ||
4550 | adjust_glyphs (f); | |
4551 | ||
d2b35234 | 4552 | UNBLOCK_INPUT; |
756b6edc | 4553 | |
478292ed RS |
4554 | /* Fselect_window will have made f the selected frame, so we |
4555 | reselect the proper frame here. Fhandle_switch_frame will change the | |
4556 | selected window too, but that doesn't make the call to | |
4557 | Fselect_window above totally superfluous; it still sets f's | |
4558 | selected window. */ | |
4559 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
4560 | do_switch_frame (data->selected_frame, Qnil, 0); | |
4561 | ||
4562 | if (! NILP (Vwindow_configuration_change_hook) | |
4563 | && ! NILP (Vrun_hooks)) | |
4564 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4565 | } | |
bdc727bf JB |
4566 | |
4567 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
4568 | { |
4569 | Fset_buffer (new_current_buffer); | |
4570 | ||
4571 | /* If the buffer that is current now is the same | |
4572 | that was current before setting the window configuration, | |
4573 | don't alter its PT. */ | |
4574 | if (old_point >= 0) | |
4575 | SET_PT (old_point); | |
4576 | } | |
bdc727bf | 4577 | |
478292ed RS |
4578 | /* Restore the minimum heights recorded in the configuration. */ |
4579 | window_min_height = XINT (data->min_height); | |
4580 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 4581 | |
478292ed | 4582 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 4583 | |
3f8ab7bd | 4584 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
4585 | } |
4586 | ||
44fa5b1e | 4587 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
4588 | by setting their buffers to nil. */ |
4589 | ||
fd482be5 | 4590 | void |
7ab12479 JB |
4591 | delete_all_subwindows (w) |
4592 | register struct window *w; | |
4593 | { | |
265a9e55 | 4594 | if (!NILP (w->next)) |
7ab12479 | 4595 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 4596 | if (!NILP (w->vchild)) |
7ab12479 | 4597 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 4598 | if (!NILP (w->hchild)) |
7ab12479 | 4599 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
4600 | |
4601 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
4602 | ||
86e48436 RS |
4603 | if (!NILP (w->buffer)) |
4604 | unshow_buffer (w); | |
4605 | ||
605be8af JB |
4606 | /* We set all three of these fields to nil, to make sure that we can |
4607 | distinguish this dead window from any live window. Live leaf | |
4608 | windows will have buffer set, and combination windows will have | |
4609 | vchild or hchild set. */ | |
4610 | w->buffer = Qnil; | |
4611 | w->vchild = Qnil; | |
4612 | w->hchild = Qnil; | |
7ab12479 JB |
4613 | } |
4614 | \f | |
4615 | static int | |
4616 | count_windows (window) | |
4617 | register struct window *window; | |
4618 | { | |
4619 | register int count = 1; | |
265a9e55 | 4620 | if (!NILP (window->next)) |
7ab12479 | 4621 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 4622 | if (!NILP (window->vchild)) |
7ab12479 | 4623 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 4624 | if (!NILP (window->hchild)) |
7ab12479 JB |
4625 | count += count_windows (XWINDOW (window->hchild)); |
4626 | return count; | |
4627 | } | |
4628 | ||
5500c422 GM |
4629 | |
4630 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
4631 | Value is last index + 1. */ | |
4632 | ||
4633 | static int | |
4634 | get_leaf_windows (w, flat, i) | |
4635 | struct window *w; | |
4636 | struct window **flat; | |
4637 | int i; | |
4638 | { | |
4639 | while (w) | |
4640 | { | |
4641 | if (!NILP (w->hchild)) | |
4642 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
4643 | else if (!NILP (w->vchild)) | |
4644 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
4645 | else | |
4646 | flat[i++] = w; | |
4647 | ||
4648 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4649 | } | |
4650 | ||
4651 | return i; | |
4652 | } | |
4653 | ||
4654 | ||
4655 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
4656 | null if W's current matrix is invalid, so that no meaningfull glyph | |
4657 | can be returned. */ | |
4658 | ||
4659 | struct glyph * | |
4660 | get_phys_cursor_glyph (w) | |
4661 | struct window *w; | |
4662 | { | |
4663 | struct glyph_row *row; | |
4664 | struct glyph *glyph; | |
4665 | ||
4666 | if (w->phys_cursor.vpos >= 0 | |
4667 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
4668 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
4669 | row->enabled_p) | |
4670 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
4671 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
4672 | else | |
4673 | glyph = NULL; | |
4674 | ||
4675 | return glyph; | |
4676 | } | |
4677 | ||
4678 | ||
7ab12479 JB |
4679 | static int |
4680 | save_window_save (window, vector, i) | |
4681 | Lisp_Object window; | |
4682 | struct Lisp_Vector *vector; | |
4683 | int i; | |
4684 | { | |
4685 | register struct saved_window *p; | |
4686 | register struct window *w; | |
4687 | register Lisp_Object tem; | |
4688 | ||
265a9e55 | 4689 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
4690 | { |
4691 | p = SAVED_WINDOW_N (vector, i); | |
4692 | w = XWINDOW (window); | |
4693 | ||
d834a2e9 | 4694 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
4695 | p->window = window; |
4696 | p->buffer = w->buffer; | |
4697 | p->left = w->left; | |
4698 | p->top = w->top; | |
4699 | p->width = w->width; | |
4700 | p->height = w->height; | |
4701 | p->hscroll = w->hscroll; | |
4702 | p->display_table = w->display_table; | |
265a9e55 | 4703 | if (!NILP (w->buffer)) |
7ab12479 JB |
4704 | { |
4705 | /* Save w's value of point in the window configuration. | |
4706 | If w is the selected window, then get the value of point | |
4707 | from the buffer; pointm is garbage in the selected window. */ | |
4708 | if (EQ (window, selected_window)) | |
4709 | { | |
4710 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
4711 | set_marker_both (p->pointm, w->buffer, |
4712 | BUF_PT (XBUFFER (w->buffer)), | |
4713 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
4714 | } |
4715 | else | |
eeb82665 | 4716 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 4717 | |
eeb82665 | 4718 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
4719 | p->start_at_line_beg = w->start_at_line_beg; |
4720 | ||
4721 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 4722 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
4723 | } |
4724 | else | |
4725 | { | |
4726 | p->pointm = Qnil; | |
4727 | p->start = Qnil; | |
4728 | p->mark = Qnil; | |
4729 | p->start_at_line_beg = Qnil; | |
4730 | } | |
4731 | ||
265a9e55 | 4732 | if (NILP (w->parent)) |
7ab12479 JB |
4733 | p->parent = Qnil; |
4734 | else | |
4735 | p->parent = XWINDOW (w->parent)->temslot; | |
4736 | ||
265a9e55 | 4737 | if (NILP (w->prev)) |
7ab12479 JB |
4738 | p->prev = Qnil; |
4739 | else | |
4740 | p->prev = XWINDOW (w->prev)->temslot; | |
4741 | ||
265a9e55 | 4742 | if (!NILP (w->vchild)) |
7ab12479 | 4743 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 4744 | if (!NILP (w->hchild)) |
7ab12479 JB |
4745 | i = save_window_save (w->hchild, vector, i); |
4746 | } | |
4747 | ||
4748 | return i; | |
4749 | } | |
4750 | ||
a0d76c27 EN |
4751 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
4752 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
4753 | "Return an object representing the current window configuration of FRAME.\n\ |
4754 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
4755 | This describes the number of windows, their sizes and current buffers,\n\ |
4756 | and for each displayed buffer, where display starts, and the positions of\n\ | |
4757 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
4758 | its value is -not- saved.\n\ |
4759 | This also records the currently selected frame, and FRAME's focus\n\ | |
4760 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
4761 | (frame) |
4762 | Lisp_Object frame; | |
7ab12479 JB |
4763 | { |
4764 | register Lisp_Object tem; | |
4765 | register int n_windows; | |
4766 | register struct save_window_data *data; | |
da2792e0 | 4767 | register struct Lisp_Vector *vec; |
7ab12479 | 4768 | register int i; |
44fa5b1e | 4769 | FRAME_PTR f; |
43bad991 | 4770 | |
44fa5b1e | 4771 | if (NILP (frame)) |
1ae1a37d GM |
4772 | frame = selected_frame; |
4773 | CHECK_LIVE_FRAME (frame, 0); | |
4774 | f = XFRAME (frame); | |
7ab12479 | 4775 | |
44fa5b1e | 4776 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
4777 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
4778 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
4779 | vec->contents[i] = Qnil; | |
4780 | vec->size = VECSIZE (struct save_window_data); | |
4781 | data = (struct save_window_data *)vec; | |
4782 | ||
d834a2e9 KH |
4783 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
4784 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
4785 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 4786 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 4787 | data->selected_frame = selected_frame; |
44fa5b1e | 4788 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 4789 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 4790 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 4791 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 4792 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
4793 | XSETINT (data->min_height, window_min_height); |
4794 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
4795 | tem = Fmake_vector (make_number (n_windows), Qnil); |
4796 | data->saved_windows = tem; | |
4797 | for (i = 0; i < n_windows; i++) | |
4798 | XVECTOR (tem)->contents[i] | |
4799 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 4800 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 4801 | XVECTOR (tem), 0); |
74112613 | 4802 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
4803 | return (tem); |
4804 | } | |
4805 | ||
4806 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
4807 | 0, UNEVALLED, 0, | |
4808 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
4809 | Restore which buffer appears in which window, where display starts,\n\ |
4810 | and the value of point and mark for each window.\n\ | |
4811 | Also restore which buffer is current.\n\ | |
4812 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
4813 | Does not restore the value of point in current buffer.") |
4814 | (args) | |
4815 | Lisp_Object args; | |
4816 | { | |
4817 | register Lisp_Object val; | |
4818 | register int count = specpdl_ptr - specpdl; | |
4819 | ||
4820 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 4821 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
4822 | val = Fprogn (args); |
4823 | return unbind_to (count, val); | |
4824 | } | |
5500c422 GM |
4825 | |
4826 | \f | |
4827 | /*********************************************************************** | |
4828 | Marginal Areas | |
4829 | ***********************************************************************/ | |
4830 | ||
4831 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
4832 | 2, 3, "", | |
4833 | "Set width of marginal areas of window WINDOW.\n\ | |
4834 | If window is nil or omitted, set margins of the currently selected window.\n\ | |
4835 | First parameter LEFT-WIDTH specifies the number of character\n\ | |
4836 | cells to reserve for the left marginal area. Second parameter\n\ | |
4837 | RIGHT-WIDTH does the same for the right marginal area.\n\ | |
4838 | A nil width parameter means no margin.") | |
cfa22082 | 4839 | (window, left, right) |
5500c422 GM |
4840 | Lisp_Object window, left, right; |
4841 | { | |
4842 | struct window *w = decode_window (window); | |
5500c422 GM |
4843 | |
4844 | if (!NILP (left)) | |
cfa22082 | 4845 | CHECK_NUMBER_OR_FLOAT (left, 1); |
5500c422 | 4846 | if (!NILP (right)) |
cfa22082 | 4847 | CHECK_NUMBER_OR_FLOAT (right, 2); |
5500c422 GM |
4848 | |
4849 | /* Check widths < 0 and translate a zero width to nil. | |
4850 | Margins that are too wide have to be checked elsewhere. */ | |
4851 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 4852 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
4853 | XSETFASTINT (left, 0); |
4854 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
4855 | left = Qnil; | |
4856 | ||
4857 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 4858 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
4859 | XSETFASTINT (right, 0); |
4860 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
4861 | right = Qnil; | |
4862 | ||
4863 | w->left_margin_width = left; | |
4864 | w->right_margin_width = right; | |
4865 | ||
4866 | ++windows_or_buffers_changed; | |
4867 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
4868 | return Qnil; | |
4869 | } | |
4870 | ||
4871 | ||
4872 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
4873 | 0, 1, 0, | |
4874 | "Get width of marginal areas of window WINDOW.\n\ | |
4875 | If WINDOW is omitted or nil, use the currently selected window.\n\ | |
4876 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).\n\ | |
4877 | If a marginal area does not exist, its width will be returned\n\ | |
4878 | as nil.") | |
4879 | (window) | |
4880 | Lisp_Object window; | |
4881 | { | |
4882 | struct window *w = decode_window (window); | |
4883 | return Fcons (w->left_margin_width, w->right_margin_width); | |
4884 | } | |
4885 | ||
4886 | ||
7ab12479 | 4887 | \f |
5500c422 GM |
4888 | /*********************************************************************** |
4889 | Smooth scrolling | |
4890 | ***********************************************************************/ | |
4891 | ||
4892 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
4893 | "Return the amount by which WINDOW is scrolled vertically.\n\ | |
4894 | Use the selected window if WINDOW is nil or omitted.\n\ | |
4895 | Value is a multiple of the canonical character height of WINDOW.") | |
4896 | (window) | |
4897 | Lisp_Object window; | |
4898 | { | |
47004952 | 4899 | Lisp_Object result; |
5500c422 GM |
4900 | struct frame *f; |
4901 | struct window *w; | |
4902 | ||
4903 | if (NILP (window)) | |
4904 | window = selected_window; | |
47004952 GM |
4905 | else |
4906 | CHECK_WINDOW (window, 0); | |
5500c422 GM |
4907 | w = XWINDOW (window); |
4908 | f = XFRAME (w->frame); | |
4909 | ||
4910 | if (FRAME_WINDOW_P (f)) | |
47004952 | 4911 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 4912 | else |
47004952 GM |
4913 | result = make_number (0); |
4914 | return result; | |
5500c422 GM |
4915 | } |
4916 | ||
4917 | ||
4918 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 GM |
4919 | 2, 2, 0, |
4920 | "Set amount by which WINDOW should be scrolled vertically to VSCROLL.\n\ | |
5500c422 | 4921 | WINDOW nil or omitted means use the selected window. VSCROLL is a\n\ |
47004952 GM |
4922 | non-negative multiple of the canonical character height of WINDOW.") |
4923 | (window, vscroll) | |
4924 | Lisp_Object window, vscroll; | |
5500c422 GM |
4925 | { |
4926 | struct window *w; | |
4927 | struct frame *f; | |
4928 | ||
5500c422 GM |
4929 | if (NILP (window)) |
4930 | window = selected_window; | |
47004952 GM |
4931 | else |
4932 | CHECK_WINDOW (window, 0); | |
4933 | CHECK_NUMBER_OR_FLOAT (vscroll, 1); | |
4934 | ||
5500c422 GM |
4935 | w = XWINDOW (window); |
4936 | f = XFRAME (w->frame); | |
4937 | ||
4938 | if (FRAME_WINDOW_P (f)) | |
4939 | { | |
4940 | int old_dy = w->vscroll; | |
47004952 GM |
4941 | |
4942 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
4943 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
4944 | |
4945 | /* Adjust glyph matrix of the frame if the virtual display | |
4946 | area becomes larger than before. */ | |
4947 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
4948 | adjust_glyphs (f); | |
4949 | ||
4950 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 4951 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
4952 | } |
4953 | ||
47004952 | 4954 | return Fwindow_vscroll (window); |
5500c422 GM |
4955 | } |
4956 | ||
7bbb5782 GM |
4957 | \f |
4958 | /* Call FN for all leaf windows on frame F. FN is called with the | |
4959 | first argument being a pointer to the leaf window, and with | |
4960 | additional arguments A1..A4. */ | |
4961 | ||
4962 | void | |
4963 | foreach_window (f, fn, a1, a2, a3, a4) | |
4964 | struct frame *f; | |
4965 | void (* fn) (); | |
4966 | int a1, a2, a3, a4; | |
4967 | { | |
4968 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, a1, a2, a3, a4); | |
4969 | } | |
4970 | ||
4971 | ||
4972 | /* Helper function for foreach_window. Call FN for all leaf windows | |
4973 | reachable from W. FN is called with the first argument being a | |
4974 | pointer to the leaf window, and with additional arguments A1..A4. */ | |
4975 | ||
4976 | static void | |
4977 | foreach_window_1 (w, fn, a1, a2, a3, a4) | |
4978 | struct window *w; | |
4979 | void (* fn) (); | |
4980 | int a1, a2, a3, a4; | |
4981 | { | |
4982 | while (w) | |
4983 | { | |
4984 | if (!NILP (w->hchild)) | |
4985 | foreach_window_1 (XWINDOW (w->hchild), fn, a1, a2, a3, a4); | |
4986 | else if (!NILP (w->vchild)) | |
4987 | foreach_window_1 (XWINDOW (w->vchild), fn, a1, a2, a3, a4); | |
4988 | else | |
4989 | fn (w, a1, a2, a3, a4); | |
4990 | ||
4991 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4992 | } | |
4993 | } | |
4994 | ||
4995 | ||
4996 | /* Freeze or unfreeze the window start of W if unless it is a | |
4997 | mini-window or the selected window. FREEZE_P non-zero means freeze | |
4998 | the window start. */ | |
4999 | ||
5000 | static void | |
5001 | freeze_window_start (w, freeze_p) | |
5002 | struct window *w; | |
5003 | int freeze_p; | |
5004 | { | |
5005 | if (w == XWINDOW (selected_window) | |
5006 | || MINI_WINDOW_P (w) | |
5007 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
5008 | && w == XWINDOW (Vminibuf_scroll_window))) | |
5009 | freeze_p = 0; | |
5010 | ||
5011 | w->frozen_window_start_p = freeze_p; | |
5012 | } | |
5013 | ||
5014 | ||
5015 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5016 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5017 | means freeze the window start. */ | |
5018 | ||
5019 | void | |
5020 | freeze_window_starts (f, freeze_p) | |
5021 | struct frame *f; | |
5022 | int freeze_p; | |
5023 | { | |
5024 | foreach_window (f, freeze_window_start, freeze_p); | |
5025 | } | |
5500c422 GM |
5026 | |
5027 | \f | |
5028 | /*********************************************************************** | |
5029 | Initialization | |
5030 | ***********************************************************************/ | |
5031 | ||
cbff28e8 RS |
5032 | /* Return 1 if window configurations C1 and C2 |
5033 | describe the same state of affairs. This is used by Fequal. */ | |
5034 | ||
5035 | int | |
2f8274be | 5036 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5037 | Lisp_Object c1, c2; |
2f8274be | 5038 | int ignore_positions; |
cbff28e8 RS |
5039 | { |
5040 | register struct save_window_data *d1, *d2; | |
5041 | struct Lisp_Vector *sw1, *sw2; | |
5042 | int i; | |
5043 | ||
5044 | d1 = (struct save_window_data *) XVECTOR (c1); | |
5045 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5046 | sw1 = XVECTOR (d1->saved_windows); | |
5047 | sw2 = XVECTOR (d2->saved_windows); | |
5048 | ||
5049 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5050 | return 0; | |
5051 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5052 | return 0; | |
5053 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5054 | return 0; | |
5055 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5056 | return 0; | |
5057 | /* Don't compare the current_window field directly. | |
5058 | Instead see w1_is_current and w2_is_current, below. */ | |
5059 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5060 | return 0; | |
2f8274be RS |
5061 | if (! ignore_positions) |
5062 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5063 | return 0; | |
cbff28e8 RS |
5064 | /* Don't compare the root_window field. |
5065 | We don't require the two configurations | |
5066 | to use the same window object, | |
5067 | and the two root windows must be equivalent | |
5068 | if everything else compares equal. */ | |
5069 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5070 | return 0; | |
5071 | if (! EQ (d1->min_width, d2->min_width)) | |
5072 | return 0; | |
5073 | if (! EQ (d1->min_height, d2->min_height)) | |
5074 | return 0; | |
5075 | ||
5076 | /* Verify that the two confis have the same number of windows. */ | |
5077 | if (sw1->size != sw2->size) | |
5078 | return 0; | |
5079 | ||
5080 | for (i = 0; i < sw1->size; i++) | |
5081 | { | |
5082 | struct saved_window *p1, *p2; | |
5083 | int w1_is_current, w2_is_current; | |
5084 | ||
5085 | p1 = SAVED_WINDOW_N (sw1, i); | |
5086 | p2 = SAVED_WINDOW_N (sw2, i); | |
5087 | ||
5088 | /* Verify that the current windows in the two | |
5089 | configurations correspond to each other. */ | |
5090 | w1_is_current = EQ (d1->current_window, p1->window); | |
5091 | w2_is_current = EQ (d2->current_window, p2->window); | |
5092 | ||
5093 | if (w1_is_current != w2_is_current) | |
5094 | return 0; | |
5095 | ||
5096 | /* Verify that the corresponding windows do match. */ | |
5097 | if (! EQ (p1->buffer, p2->buffer)) | |
5098 | return 0; | |
5099 | if (! EQ (p1->left, p2->left)) | |
5100 | return 0; | |
5101 | if (! EQ (p1->top, p2->top)) | |
5102 | return 0; | |
5103 | if (! EQ (p1->width, p2->width)) | |
5104 | return 0; | |
5105 | if (! EQ (p1->height, p2->height)) | |
5106 | return 0; | |
cbff28e8 RS |
5107 | if (! EQ (p1->display_table, p2->display_table)) |
5108 | return 0; | |
5109 | if (! EQ (p1->parent, p2->parent)) | |
5110 | return 0; | |
5111 | if (! EQ (p1->prev, p2->prev)) | |
5112 | return 0; | |
2f8274be RS |
5113 | if (! ignore_positions) |
5114 | { | |
5115 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5116 | return 0; | |
5117 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) | |
5118 | return 0; | |
5119 | if (NILP (Fequal (p1->start, p2->start))) | |
5120 | return 0; | |
5121 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5122 | return 0; | |
5123 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5124 | return 0; | |
5125 | } | |
cbff28e8 RS |
5126 | } |
5127 | ||
5128 | return 1; | |
5129 | } | |
2f8274be RS |
5130 | |
5131 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5132 | Scompare_window_configurations, 2, 2, 0, | |
5133 | "Compare two window configurations as regards the structure of windows.\n\ | |
5134 | This function ignores details such as the values of point and mark\n\ | |
5135 | and scrolling positions.") | |
5136 | (x, y) | |
5137 | Lisp_Object x, y; | |
5138 | { | |
5139 | if (compare_window_configurations (x, y, 1)) | |
5140 | return Qt; | |
5141 | return Qnil; | |
5142 | } | |
cbff28e8 | 5143 | \f |
dfcf069d | 5144 | void |
7ab12479 JB |
5145 | init_window_once () |
5146 | { | |
1ae1a37d GM |
5147 | struct frame *f = make_terminal_frame (); |
5148 | XSETFRAME (selected_frame, f); | |
5149 | Vterminal_frame = selected_frame; | |
5150 | minibuf_window = f->minibuffer_window; | |
5151 | selected_window = f->selected_window; | |
5152 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5153 | |
5154 | window_initialized = 1; | |
7ab12479 JB |
5155 | } |
5156 | ||
dfcf069d | 5157 | void |
7ab12479 JB |
5158 | syms_of_window () |
5159 | { | |
fbad6f9a GM |
5160 | Qleft_bitmap_area = intern ("left-bitmap-area"); |
5161 | staticpro (&Qleft_bitmap_area); | |
5162 | Qright_bitmap_area = intern ("right-bitmap-area"); | |
5163 | staticpro (&Qright_bitmap_area); | |
5164 | ||
8a37516b GM |
5165 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5166 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5167 | |
543f5fb1 RS |
5168 | staticpro (&Qwindow_configuration_change_hook); |
5169 | Qwindow_configuration_change_hook | |
5170 | = intern ("window-configuration-change-hook"); | |
5171 | ||
7ab12479 JB |
5172 | Qwindowp = intern ("windowp"); |
5173 | staticpro (&Qwindowp); | |
5174 | ||
3f8ab7bd RS |
5175 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5176 | staticpro (&Qwindow_configuration_p); | |
5177 | ||
806b4d9b JB |
5178 | Qwindow_live_p = intern ("window-live-p"); |
5179 | staticpro (&Qwindow_live_p); | |
605be8af | 5180 | |
2cccc823 | 5181 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5182 | staticpro (&Qtemp_buffer_show_hook); |
5183 | ||
7ab12479 JB |
5184 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
5185 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 5186 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
5187 | Used by `with-output-to-temp-buffer'.\n\ |
5188 | If this function is used, then it must do the entire job of showing\n\ | |
5189 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
5190 | Vtemp_buffer_show_function = Qnil; |
5191 | ||
5192 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
5193 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
5194 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
5195 | that the currently selected window is not acceptable.\n\ | |
5196 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
5197 | work using this function."); | |
5198 | Vdisplay_buffer_function = Qnil; | |
5199 | ||
7ab12479 JB |
5200 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
5201 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
5202 | Vminibuf_scroll_window = Qnil; | |
5203 | ||
5204 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
5205 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
5206 | Vother_window_scroll_buffer = Qnil; | |
5207 | ||
44fa5b1e | 5208 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 5209 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 5210 | pop_up_frames = 0; |
7ab12479 | 5211 | |
44fa5b1e | 5212 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 5213 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 5214 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 5215 | \n\ |
44fa5b1e JB |
5216 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
5217 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
5218 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 5219 | |
a90712c2 RS |
5220 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
5221 | "*List of buffer names that should have their own special frames.\n\ | |
5222 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 5223 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 5224 | \n\ |
524580a4 RS |
5225 | An element of the list can be a list instead of just a string.\n\ |
5226 | There are two ways to use a list as an element:\n\ | |
5227 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
5228 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5229 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
5230 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
4caa7448 RS |
5231 | All this is done by the function found in `special-display-function'.\n\ |
5232 | \n\ | |
5233 | If this variable appears \"not to work\", because you add a name to it\n\ | |
5234 | but that buffer still appears in the selected window, look at the\n\ | |
5235 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5236 | Those variables take precedence over this one."); | |
a90712c2 RS |
5237 | Vspecial_display_buffer_names = Qnil; |
5238 | ||
5239 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
5240 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
5241 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
5242 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 5243 | using `special-display-function'.\n\ |
3548e138 | 5244 | \n\ |
524580a4 RS |
5245 | An element of the list can be a list instead of just a string.\n\ |
5246 | There are two ways to use a list as an element:\n\ | |
5247 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
5248 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5249 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
5250 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
4caa7448 RS |
5251 | All this is done by the function found in `special-display-function'.\n\ |
5252 | \n\ | |
5253 | If this variable appears \"not to work\", because you add a regexp to it\n\ | |
5254 | but the matching buffers still appear in the selected window, look at the\n\ | |
5255 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5256 | Those variables take precedence over this one."); | |
a90712c2 RS |
5257 | Vspecial_display_regexps = Qnil; |
5258 | ||
5259 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
5260 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
5261 | It is called with two arguments, the buffer and optional buffer specific\n\ |
5262 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 5263 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 5264 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
5265 | \n\ |
5266 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
5267 | or matches a regexp in `special-display-regexps'."); | |
5268 | Vspecial_display_function = Qnil; | |
5269 | ||
855d8627 RS |
5270 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
5271 | "*List of buffer names that should appear in the selected window.\n\ | |
5272 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
5273 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 5274 | in some other window.\n\ |
855d8627 RS |
5275 | \n\ |
5276 | An element of the list can be a cons cell instead of just a string.\n\ | |
5277 | Then the car must be a string, which specifies the buffer name.\n\ | |
5278 | This is for compatibility with `special-display-buffer-names';\n\ | |
5279 | the cdr of the cons cell is ignored.\n\ | |
5280 | \n\ | |
5281 | See also `same-window-regexps'."); | |
5282 | Vsame_window_buffer_names = Qnil; | |
5283 | ||
5284 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
5285 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
5286 | If a buffer name matches one of these regexps, then displaying it\n\ | |
5287 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
5288 | in the selected window, rather than making it appear in some other window.\n\ | |
5289 | \n\ | |
5290 | An element of the list can be a cons cell instead of just a string.\n\ | |
5291 | Then the car must be a string, which specifies the buffer name.\n\ | |
5292 | This is for compatibility with `special-display-buffer-names';\n\ | |
5293 | the cdr of the cons cell is ignored.\n\ | |
5294 | \n\ | |
5295 | See also `same-window-buffer-names'."); | |
5296 | Vsame_window_regexps = Qnil; | |
5297 | ||
7ab12479 JB |
5298 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
5299 | "*Non-nil means display-buffer should make new windows."); | |
5300 | pop_up_windows = 1; | |
5301 | ||
5302 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
5303 | "*Number of lines of continuity when scrolling by screenfuls."); | |
5304 | next_screen_context_lines = 2; | |
5305 | ||
5306 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
5307 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
5308 | If there is only one window, it is split regardless of this value."); | |
5309 | split_height_threshold = 500; | |
5310 | ||
5311 | DEFVAR_INT ("window-min-height", &window_min_height, | |
5312 | "*Delete any window less than this tall (including its mode line)."); | |
5313 | window_min_height = 4; | |
5314 | ||
5315 | DEFVAR_INT ("window-min-width", &window_min_width, | |
5316 | "*Delete any window less than this wide."); | |
5317 | window_min_width = 10; | |
5318 | ||
5500c422 GM |
5319 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5320 | &Vscroll_preserve_screen_position, | |
9317a85d | 5321 | "*Nonzero means scroll commands move point to keep its screen line unchanged."); |
5500c422 | 5322 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5323 | |
543f5fb1 RS |
5324 | DEFVAR_LISP ("window-configuration-change-hook", |
5325 | &Vwindow_configuration_change_hook, | |
5326 | "Functions to call when window configuration changes.\n\ | |
e3e041eb | 5327 | The selected frame is the one whose configuration has changed."); |
543f5fb1 RS |
5328 | Vwindow_configuration_change_hook = Qnil; |
5329 | ||
7ab12479 JB |
5330 | defsubr (&Sselected_window); |
5331 | defsubr (&Sminibuffer_window); | |
5332 | defsubr (&Swindow_minibuffer_p); | |
5333 | defsubr (&Swindowp); | |
806b4d9b | 5334 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5335 | defsubr (&Spos_visible_in_window_p); |
5336 | defsubr (&Swindow_buffer); | |
5337 | defsubr (&Swindow_height); | |
5338 | defsubr (&Swindow_width); | |
5339 | defsubr (&Swindow_hscroll); | |
5340 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5341 | defsubr (&Swindow_redisplay_end_trigger); |
5342 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5343 | defsubr (&Swindow_edges); |
d5783c40 JB |
5344 | defsubr (&Scoordinates_in_window_p); |
5345 | defsubr (&Swindow_at); | |
7ab12479 JB |
5346 | defsubr (&Swindow_point); |
5347 | defsubr (&Swindow_start); | |
5348 | defsubr (&Swindow_end); | |
5349 | defsubr (&Sset_window_point); | |
5350 | defsubr (&Sset_window_start); | |
5351 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5352 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5353 | defsubr (&Swindow_display_table); |
5354 | defsubr (&Sset_window_display_table); | |
5355 | defsubr (&Snext_window); | |
5356 | defsubr (&Sprevious_window); | |
5357 | defsubr (&Sother_window); | |
5358 | defsubr (&Sget_lru_window); | |
5359 | defsubr (&Sget_largest_window); | |
5360 | defsubr (&Sget_buffer_window); | |
5361 | defsubr (&Sdelete_other_windows); | |
5362 | defsubr (&Sdelete_windows_on); | |
5363 | defsubr (&Sreplace_buffer_in_windows); | |
5364 | defsubr (&Sdelete_window); | |
5365 | defsubr (&Sset_window_buffer); | |
5366 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5367 | defsubr (&Sspecial_display_p); |
5368 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5369 | defsubr (&Sdisplay_buffer); |
5370 | defsubr (&Ssplit_window); | |
5371 | defsubr (&Senlarge_window); | |
5372 | defsubr (&Sshrink_window); | |
5373 | defsubr (&Sscroll_up); | |
5374 | defsubr (&Sscroll_down); | |
5375 | defsubr (&Sscroll_left); | |
5376 | defsubr (&Sscroll_right); | |
ccd0664b | 5377 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5378 | defsubr (&Sscroll_other_window); |
5379 | defsubr (&Srecenter); | |
5380 | defsubr (&Smove_to_window_line); | |
5381 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5382 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5383 | defsubr (&Sset_window_configuration); |
5384 | defsubr (&Scurrent_window_configuration); | |
5385 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5386 | defsubr (&Sset_window_margins); |
5387 | defsubr (&Swindow_margins); | |
5388 | defsubr (&Swindow_vscroll); | |
5389 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5390 | defsubr (&Scompare_window_configurations); |
7ab12479 JB |
5391 | } |
5392 | ||
dfcf069d | 5393 | void |
7ab12479 JB |
5394 | keys_of_window () |
5395 | { | |
5396 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5397 | initial_define_key (control_x_map, '2', "split-window"); | |
5398 | initial_define_key (control_x_map, '0', "delete-window"); | |
5399 | initial_define_key (control_x_map, 'o', "other-window"); | |
5400 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5401 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5402 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5403 | ||
5404 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5405 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5406 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5407 | ||
5408 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5409 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5410 | } |