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