Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
49b996e7 | 3 | Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000, 2001, 2002 |
6529ed87 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1113d9db | 10 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 22 | |
18160b98 | 23 | #include <config.h> |
7ab12479 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
3e4731a3 | 26 | #include "keyboard.h" |
e35f6ff7 | 27 | #include "keymap.h" |
44fa5b1e | 28 | #include "frame.h" |
7ab12479 JB |
29 | #include "window.h" |
30 | #include "commands.h" | |
31 | #include "indent.h" | |
32 | #include "termchar.h" | |
33 | #include "disptab.h" | |
dfcf069d | 34 | #include "dispextern.h" |
5500c422 GM |
35 | #include "blockinput.h" |
36 | #include "intervals.h" | |
37 | ||
6d55d620 | 38 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 39 | #include "xterm.h" |
5500c422 | 40 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
41 | #ifdef WINDOWSNT |
42 | #include "w32term.h" | |
43 | #endif | |
1e3c8885 EZ |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #endif | |
1a578e9b AC |
47 | #ifdef macintosh |
48 | #include "macterm.h" | |
49 | #endif | |
5500c422 | 50 | |
7442878f GM |
51 | /* Values returned from coordinates_in_window. */ |
52 | ||
53 | enum window_part | |
54 | { | |
55 | ON_NOTHING, | |
56 | ON_TEXT, | |
57 | ON_MODE_LINE, | |
58 | ON_VERTICAL_BORDER, | |
59 | ON_HEADER_LINE, | |
60 | ON_LEFT_FRINGE, | |
49b996e7 GM |
61 | ON_RIGHT_FRINGE, |
62 | ON_LEFT_MARGIN, | |
63 | ON_RIGHT_MARGIN | |
7442878f GM |
64 | }; |
65 | ||
5500c422 | 66 | |
3f8ab7bd | 67 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
90647b07 | 68 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 69 | extern Lisp_Object Qleft_margin, Qright_margin; |
233a4a2c | 70 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 71 | |
521b203e | 72 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 73 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 74 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
75 | static int count_windows P_ ((struct window *)); |
76 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
77 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
78 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
79 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 80 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 81 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 82 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 83 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 84 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
f95284d2 | 85 | static void enlarge_window P_ ((Lisp_Object, int, int, int)); |
67492200 | 86 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 87 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
88 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
89 | Lisp_Object)); | |
67492200 GM |
90 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
91 | Lisp_Object, int)); | |
92 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
93 | Lisp_Object *)); | |
f95464e4 GM |
94 | static int foreach_window_1 P_ ((struct window *, |
95 | int (* fn) (struct window *, void *), | |
96 | void *)); | |
cd2904bd | 97 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 98 | |
b0b7ed0e GM |
99 | /* The value of `window-size-fixed'. */ |
100 | ||
101 | int window_size_fixed; | |
102 | ||
7ab12479 JB |
103 | /* This is the window in which the terminal's cursor should |
104 | be left when nothing is being done with it. This must | |
105 | always be a leaf window, and its buffer is selected by | |
106 | the top level editing loop at the end of each command. | |
107 | ||
108 | This value is always the same as | |
44fa5b1e | 109 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
110 | |
111 | Lisp_Object selected_window; | |
112 | ||
67492200 GM |
113 | /* A list of all windows for use by next_window and Fwindow_list. |
114 | Functions creating or deleting windows should invalidate this cache | |
115 | by setting it to nil. */ | |
116 | ||
117 | Lisp_Object Vwindow_list; | |
118 | ||
5500c422 GM |
119 | /* The mini-buffer window of the selected frame. |
120 | Note that you cannot test for mini-bufferness of an arbitrary window | |
121 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 122 | the selected window. */ |
5500c422 | 123 | |
7ab12479 JB |
124 | Lisp_Object minibuf_window; |
125 | ||
3f49fddc KS |
126 | /* Non-nil means it is the window whose mode line should be |
127 | shown as the selected window when the minibuffer is selected. */ | |
128 | ||
3dbab091 | 129 | Lisp_Object minibuf_selected_window; |
3f49fddc | 130 | |
7ab12479 | 131 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
132 | when the mini-buffer is selected. */ |
133 | ||
7ab12479 JB |
134 | Lisp_Object Vminibuf_scroll_window; |
135 | ||
136 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 137 | |
7ab12479 JB |
138 | Lisp_Object Vother_window_scroll_buffer; |
139 | ||
7ab12479 | 140 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 141 | |
7ab12479 JB |
142 | Lisp_Object Vtemp_buffer_show_function; |
143 | ||
cc91894c KS |
144 | /* Non-zero means to use mode-line-inactive face in all windows but the |
145 | selected-window and the minibuffer-scroll-window when the | |
146 | minibuffer is active. */ | |
147 | int mode_line_in_non_selected_windows; | |
26124d5e | 148 | |
7ab12479 | 149 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 150 | |
31ade731 SM |
151 | EMACS_INT window_min_height; |
152 | EMACS_INT window_min_width; | |
7ab12479 JB |
153 | |
154 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 155 | |
7ab12479 JB |
156 | int pop_up_windows; |
157 | ||
44fa5b1e | 158 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 159 | |
44fa5b1e | 160 | int pop_up_frames; |
7ab12479 | 161 | |
9c3da604 GM |
162 | /* Nonzero means reuse existing frames for displaying buffers. */ |
163 | ||
164 | int display_buffer_reuse_frames; | |
165 | ||
7ab12479 | 166 | /* Non-nil means use this function instead of default */ |
5500c422 | 167 | |
44fa5b1e | 168 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
169 | |
170 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 171 | |
7ab12479 JB |
172 | Lisp_Object Vdisplay_buffer_function; |
173 | ||
6529ed87 GM |
174 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
175 | ||
176 | Lisp_Object Veven_window_heights; | |
177 | ||
a90712c2 | 178 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 179 | |
a90712c2 RS |
180 | Lisp_Object Vspecial_display_buffer_names; |
181 | ||
182 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 183 | |
a90712c2 RS |
184 | Lisp_Object Vspecial_display_regexps; |
185 | ||
186 | /* Function to pop up a special frame. */ | |
5500c422 | 187 | |
a90712c2 RS |
188 | Lisp_Object Vspecial_display_function; |
189 | ||
855d8627 | 190 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 191 | |
855d8627 RS |
192 | Lisp_Object Vsame_window_buffer_names; |
193 | ||
194 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 195 | |
855d8627 RS |
196 | Lisp_Object Vsame_window_regexps; |
197 | ||
a58ec57d | 198 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 199 | |
a58ec57d RS |
200 | Lisp_Object Qtemp_buffer_show_hook; |
201 | ||
37962e60 | 202 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 203 | if that window is more than this high. */ |
5500c422 | 204 | |
31ade731 | 205 | EMACS_INT split_height_threshold; |
7ab12479 JB |
206 | |
207 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 208 | |
31ade731 | 209 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
210 | |
211 | /* Incremented for each window created. */ | |
5500c422 | 212 | |
7ab12479 JB |
213 | static int sequence_number; |
214 | ||
5b03d3c0 | 215 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 216 | |
5b03d3c0 RS |
217 | static int window_initialized; |
218 | ||
543f5fb1 | 219 | /* Hook to run when window config changes. */ |
5500c422 | 220 | |
543f5fb1 RS |
221 | Lisp_Object Qwindow_configuration_change_hook; |
222 | Lisp_Object Vwindow_configuration_change_hook; | |
223 | ||
9317a85d RS |
224 | /* Nonzero means scroll commands try to put point |
225 | at the same screen height as previously. */ | |
9317a85d | 226 | |
5500c422 GM |
227 | Lisp_Object Vscroll_preserve_screen_position; |
228 | ||
229 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 230 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 231 | static int inhibit_frame_unsplittable; |
5500c422 | 232 | #endif /* 0 */ |
7d601aaa | 233 | |
31ade731 | 234 | extern EMACS_INT scroll_margin; |
9317a85d | 235 | |
dba06815 | 236 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
237 | \f |
238 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
239 | doc: /* Returns t if OBJECT is a window. */) |
240 | (object) | |
413430c5 | 241 | Lisp_Object object; |
7ab12479 | 242 | { |
413430c5 | 243 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
244 | } |
245 | ||
806b4d9b | 246 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 247 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
248 | (object) |
249 | Lisp_Object object; | |
605be8af | 250 | { |
9e571f49 | 251 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
252 | } |
253 | ||
7ab12479 JB |
254 | Lisp_Object |
255 | make_window () | |
256 | { | |
cffec418 | 257 | Lisp_Object val; |
7ab12479 | 258 | register struct window *p; |
cffec418 | 259 | |
26605be9 | 260 | p = allocate_window (); |
d834a2e9 KH |
261 | XSETFASTINT (p->sequence_number, ++sequence_number); |
262 | XSETFASTINT (p->left, 0); | |
263 | XSETFASTINT (p->top, 0); | |
264 | XSETFASTINT (p->height, 0); | |
265 | XSETFASTINT (p->width, 0); | |
266 | XSETFASTINT (p->hscroll, 0); | |
ea68264b | 267 | XSETFASTINT (p->min_hscroll, 0); |
f984d4fc | 268 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
269 | p->start = Fmake_marker (); |
270 | p->pointm = Fmake_marker (); | |
d834a2e9 | 271 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 272 | p->frame = Qnil; |
7ab12479 JB |
273 | p->display_table = Qnil; |
274 | p->dedicated = Qnil; | |
5500c422 GM |
275 | p->pseudo_window_p = 0; |
276 | bzero (&p->cursor, sizeof (p->cursor)); | |
277 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
278 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
279 | p->desired_matrix = p->current_matrix = 0; | |
280 | p->phys_cursor_type = -1; | |
4b26579e | 281 | p->phys_cursor_width = -1; |
5500c422 GM |
282 | p->must_be_updated_p = 0; |
283 | XSETFASTINT (p->window_end_vpos, 0); | |
284 | XSETFASTINT (p->window_end_pos, 0); | |
285 | p->window_end_valid = Qnil; | |
286 | p->vscroll = 0; | |
cffec418 | 287 | XSETWINDOW (val, p); |
5500c422 | 288 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 289 | p->frozen_window_start_p = 0; |
67492200 GM |
290 | |
291 | Vwindow_list = Qnil; | |
7ab12479 JB |
292 | return val; |
293 | } | |
294 | ||
295 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
296 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
297 | () | |
7ab12479 JB |
298 | { |
299 | return selected_window; | |
300 | } | |
301 | ||
83762ba4 | 302 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
303 | doc: /* Return the window used now for minibuffers. |
304 | If the optional argument FRAME is specified, return the minibuffer window | |
305 | used by that frame. */) | |
306 | (frame) | |
83762ba4 | 307 | Lisp_Object frame; |
7ab12479 | 308 | { |
83762ba4 | 309 | if (NILP (frame)) |
1ae1a37d | 310 | frame = selected_frame; |
b7826503 | 311 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 312 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
313 | } |
314 | ||
605be8af | 315 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
fdb82f93 PJ |
316 | doc: /* Returns non-nil if WINDOW is a minibuffer window. */) |
317 | (window) | |
7ab12479 JB |
318 | Lisp_Object window; |
319 | { | |
320 | struct window *w = decode_window (window); | |
53bb6b99 | 321 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
322 | } |
323 | ||
324 | ||
7ab12479 | 325 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 PJ |
326 | Spos_visible_in_window_p, 0, 3, 0, |
327 | doc: /* Return t if position POS is currently on the frame in WINDOW. | |
328 | Return nil if that position is scrolled vertically out of view. | |
329 | If a character is only partially visible, nil is returned, unless the | |
330 | optional argument PARTIALLY is non-nil. | |
331 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. */) | |
332 | (pos, window, partially) | |
5cdb3cf3 | 333 | Lisp_Object pos, window, partially; |
7ab12479 JB |
334 | { |
335 | register struct window *w; | |
7ab12479 JB |
336 | register int posint; |
337 | register struct buffer *buf; | |
9a132b1f GM |
338 | struct text_pos top; |
339 | Lisp_Object in_window; | |
53bb6b99 | 340 | int fully_p; |
7ab12479 | 341 | |
f28b75a9 MB |
342 | w = decode_window (window); |
343 | buf = XBUFFER (w->buffer); | |
344 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
345 | ||
346 | if (!NILP (pos)) | |
7ab12479 | 347 | { |
b7826503 | 348 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
349 | posint = XINT (pos); |
350 | } | |
f28b75a9 MB |
351 | else if (w == XWINDOW (selected_window)) |
352 | posint = PT; | |
353 | else | |
354 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 355 | |
53bb6b99 | 356 | /* If position is above window start, it's not visible. */ |
5500c422 | 357 | if (posint < CHARPOS (top)) |
9a132b1f GM |
358 | in_window = Qnil; |
359 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
81e4d465 MB |
360 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) |
361 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
81e4d465 | 362 | { |
53bb6b99 GM |
363 | /* If frame is up-to-date, and POSINT is < window end pos, use |
364 | that info. This doesn't work for POSINT == end pos, because | |
365 | the window end pos is actually the position _after_ the last | |
366 | char in the window. */ | |
5cdb3cf3 | 367 | if (NILP (partially)) |
53bb6b99 | 368 | { |
5cdb3cf3 | 369 | pos_visible_p (w, posint, &fully_p, NILP (partially)); |
53bb6b99 GM |
370 | in_window = fully_p ? Qt : Qnil; |
371 | } | |
81e4d465 | 372 | else |
53bb6b99 | 373 | in_window = Qt; |
81e4d465 | 374 | } |
9a132b1f GM |
375 | else if (posint > BUF_ZV (buf)) |
376 | in_window = Qnil; | |
377 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
378 | /* If window start is out of range, do something reasonable. */ | |
379 | in_window = Qnil; | |
7ab12479 JB |
380 | else |
381 | { | |
5cdb3cf3 MB |
382 | if (pos_visible_p (w, posint, &fully_p, NILP (partially))) |
383 | in_window = !NILP (partially) || fully_p ? Qt : Qnil; | |
81e4d465 MB |
384 | else |
385 | in_window = Qnil; | |
7ab12479 | 386 | } |
9a132b1f GM |
387 | |
388 | return in_window; | |
7ab12479 | 389 | } |
53bb6b99 | 390 | |
7ab12479 JB |
391 | \f |
392 | static struct window * | |
393 | decode_window (window) | |
394 | register Lisp_Object window; | |
395 | { | |
265a9e55 | 396 | if (NILP (window)) |
7ab12479 JB |
397 | return XWINDOW (selected_window); |
398 | ||
b7826503 | 399 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
400 | return XWINDOW (window); |
401 | } | |
402 | ||
403 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
fdb82f93 PJ |
404 | doc: /* Return the buffer that WINDOW is displaying. */) |
405 | (window) | |
7ab12479 JB |
406 | Lisp_Object window; |
407 | { | |
408 | return decode_window (window)->buffer; | |
409 | } | |
410 | ||
411 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
412 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
413 | (window) | |
7ab12479 JB |
414 | Lisp_Object window; |
415 | { | |
416 | return decode_window (window)->height; | |
417 | } | |
418 | ||
419 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
420 | doc: /* Return the number of display columns in WINDOW. |
421 | This is the width that is usable columns available for text in WINDOW. | |
422 | If you want to find out how many columns WINDOW takes up, | |
423 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
424 | (window) | |
7ab12479 JB |
425 | Lisp_Object window; |
426 | { | |
ee61d94e | 427 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
428 | } |
429 | ||
430 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
431 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
432 | (window) | |
7ab12479 JB |
433 | Lisp_Object window; |
434 | { | |
435 | return decode_window (window)->hscroll; | |
436 | } | |
437 | ||
438 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 PJ |
439 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
440 | NCOL should be zero or positive. */) | |
441 | (window, ncol) | |
ea68264b | 442 | Lisp_Object window, ncol; |
7ab12479 | 443 | { |
ea68264b GM |
444 | struct window *w = decode_window (window); |
445 | int hscroll; | |
7ab12479 | 446 | |
b7826503 | 447 | CHECK_NUMBER (ncol); |
ea68264b GM |
448 | hscroll = max (0, XINT (ncol)); |
449 | ||
450 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
451 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 452 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
ea68264b | 453 | |
c67fa410 | 454 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
455 | return ncol; |
456 | } | |
457 | ||
190eb263 RS |
458 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
459 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
460 | doc: /* Return WINDOW's redisplay end trigger value. |
461 | See `set-window-redisplay-end-trigger' for more information. */) | |
462 | (window) | |
190eb263 RS |
463 | Lisp_Object window; |
464 | { | |
465 | return decode_window (window)->redisplay_end_trigger; | |
466 | } | |
467 | ||
468 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
469 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
470 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
471 | VALUE should be a buffer position (typically a marker) or nil. | |
472 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
473 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
474 | with two arguments: WINDOW, and the end trigger value. | |
475 | Afterwards the end-trigger value is reset to nil. */) | |
476 | (window, value) | |
190eb263 RS |
477 | register Lisp_Object window, value; |
478 | { | |
479 | register struct window *w; | |
480 | ||
481 | w = decode_window (window); | |
482 | w->redisplay_end_trigger = value; | |
483 | return value; | |
484 | } | |
485 | ||
7ab12479 | 486 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
487 | doc: /* Return a list of the edge coordinates of WINDOW. |
488 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
489 | RIGHT is one more than the rightmost column used by WINDOW, | |
490 | and BOTTOM is one more than the bottommost row used by WINDOW | |
491 | and its mode-line. */) | |
492 | (window) | |
7ab12479 JB |
493 | Lisp_Object window; |
494 | { | |
495 | register struct window *w = decode_window (window); | |
496 | ||
497 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 498 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
499 | Fcons (make_number (XFASTINT (w->top) |
500 | + XFASTINT (w->height)), | |
501 | Qnil)))); | |
502 | } | |
503 | ||
fbad6f9a | 504 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
505 | If it is not, return 0; |
506 | if it is in the window's text area, | |
507 | set *x and *y to its location relative to the upper left corner | |
508 | of the window, and | |
509 | return 1; | |
510 | if it is on the window's modeline, return 2; | |
511 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
512 | return 3. |
513 | if it is on the window's top line, return 4; | |
81d189fd | 514 | if it is in left or right fringe of the window, |
49b996e7 GM |
515 | return 5 or 6, and convert *X and *Y to window-relative coordinates; |
516 | if it is in the marginal area to the left/right of the window, | |
517 | return 7 or 8, and convert *X and *Y to window-relative coordinates. | |
5500c422 GM |
518 | |
519 | X and Y are frame relative pixel coordinates. */ | |
520 | ||
7442878f | 521 | static enum window_part |
d5783c40 JB |
522 | coordinates_in_window (w, x, y) |
523 | register struct window *w; | |
524 | register int *x, *y; | |
525 | { | |
1cb794ba GM |
526 | /* Let's make this a global enum later, instead of using numbers |
527 | everywhere. */ | |
b0228ace GM |
528 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
529 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 530 | enum window_part part; |
15c565ac | 531 | int ux = CANON_X_UNIT (f); |
b0228ace GM |
532 | int x0 = XFASTINT (w->left) * ux; |
533 | int x1 = x0 + XFASTINT (w->width) * ux; | |
dad75588 GM |
534 | /* The width of the area where the vertical line can be dragged. |
535 | (Between mode lines for instance. */ | |
536 | int grabbable_width = ux; | |
ac431108 | 537 | int lmargin_width = 0, rmargin_width = 0; |
b0228ace GM |
538 | |
539 | if (*x < x0 || *x >= x1) | |
540 | return ON_NOTHING; | |
541 | ||
466539bc EZ |
542 | /* In what's below, we subtract 1 when computing right_x because we |
543 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
544 | if (w->pseudo_window_p) |
545 | { | |
546 | left_x = 0; | |
b0228ace | 547 | right_x = XFASTINT (w->width) * CANON_X_UNIT (f) - 1; |
5500c422 GM |
548 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); |
549 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
550 | } | |
551 | else | |
552 | { | |
2add4349 | 553 | left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w) |
50df5e5a | 554 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
466539bc | 555 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1; |
2add4349 | 556 | top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w) |
50df5e5a | 557 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
5500c422 GM |
558 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); |
559 | } | |
37962e60 | 560 | |
1cb794ba GM |
561 | /* On the mode line or header line? If it's near the start of |
562 | the mode or header line of window that's has a horizontal | |
563 | sibling, say it's on the vertical line. That's to be able | |
564 | to resize windows horizontally in case we're using toolkit | |
565 | scroll bars. */ | |
b0228ace | 566 | |
1cb794ba | 567 | if (WINDOW_WANTS_MODELINE_P (w) |
b0228ace GM |
568 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) |
569 | && *y < bottom_y) | |
1cb794ba | 570 | { |
b0228ace GM |
571 | /* We're somewhere on the mode line. We consider the place |
572 | between mode lines of horizontally adjacent mode lines | |
573 | as the vertical border. If scroll bars on the left, | |
574 | return the right window. */ | |
575 | part = ON_MODE_LINE; | |
576 | ||
577 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
578 | { | |
dad75588 | 579 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
580 | part = ON_VERTICAL_BORDER; |
581 | } | |
dad75588 | 582 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace | 583 | part = ON_VERTICAL_BORDER; |
1cb794ba | 584 | } |
b0228ace GM |
585 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
586 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
587 | && *y >= top_y) | |
588 | { | |
589 | part = ON_HEADER_LINE; | |
590 | ||
591 | if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f)) | |
592 | { | |
dad75588 | 593 | if (abs (*x - x0) < grabbable_width) |
b0228ace GM |
594 | part = ON_VERTICAL_BORDER; |
595 | } | |
dad75588 | 596 | else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < grabbable_width) |
b0228ace GM |
597 | part = ON_VERTICAL_BORDER; |
598 | } | |
599 | /* Outside anything interesting? */ | |
600 | else if (*y < top_y | |
601 | || *y >= bottom_y | |
602 | || *x < (left_x | |
c13418ac | 603 | - FRAME_LEFT_FRINGE_WIDTH (f) |
b0228ace | 604 | - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * ux) |
7442878f | 605 | || *x > (right_x |
c13418ac | 606 | + FRAME_RIGHT_FRINGE_WIDTH (f) |
7442878f | 607 | + FRAME_RIGHT_SCROLL_BAR_WIDTH (f) * ux)) |
1cb794ba | 608 | { |
b0228ace | 609 | part = ON_NOTHING; |
1cb794ba | 610 | } |
b0228ace | 611 | else if (FRAME_WINDOW_P (f)) |
fbad6f9a | 612 | { |
447e9da0 GM |
613 | if (!w->pseudo_window_p |
614 | && !FRAME_HAS_VERTICAL_SCROLL_BARS (f) | |
615 | && !WINDOW_RIGHTMOST_P (w) | |
c13418ac | 616 | && (abs (*x - right_x - FRAME_RIGHT_FRINGE_WIDTH (f)) < grabbable_width)) |
b0228ace GM |
617 | { |
618 | part = ON_VERTICAL_BORDER; | |
619 | } | |
620 | else if (*x < left_x || *x > right_x) | |
447e9da0 | 621 | { |
81d189fd | 622 | /* Other lines than the mode line don't include fringes and |
447e9da0 | 623 | scroll bars on the left. */ |
fbad6f9a | 624 | |
447e9da0 GM |
625 | /* Convert X and Y to window-relative pixel coordinates. */ |
626 | *x -= left_x; | |
627 | *y -= top_y; | |
b0228ace GM |
628 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
629 | } | |
630 | else | |
631 | { | |
ac431108 EZ |
632 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); |
633 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
634 | /* You can never be on a margin area if its width is zero. */ | |
635 | if (lmargin_width | |
636 | && *x <= window_box_right (w, LEFT_MARGIN_AREA)) | |
49b996e7 | 637 | part = ON_LEFT_MARGIN; |
ac431108 EZ |
638 | else if (rmargin_width |
639 | && *x >= window_box_left (w, RIGHT_MARGIN_AREA)) | |
49b996e7 GM |
640 | part = ON_RIGHT_MARGIN; |
641 | else | |
642 | { | |
643 | part = ON_TEXT; | |
644 | *x -= left_x; | |
645 | *y -= top_y; | |
646 | } | |
447e9da0 | 647 | } |
fbad6f9a | 648 | } |
447e9da0 GM |
649 | else |
650 | { | |
651 | /* Need to say "*x > right_x" rather than >=, since on character | |
652 | terminals, the vertical line's x coordinate is right_x. */ | |
653 | if (*x < left_x || *x > right_x) | |
654 | { | |
81d189fd | 655 | /* Other lines than the mode line don't include fringes and |
447e9da0 GM |
656 | scroll bars on the left. */ |
657 | ||
658 | /* Convert X and Y to window-relative pixel coordinates. */ | |
659 | *x -= left_x; | |
660 | *y -= top_y; | |
b0228ace | 661 | part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE; |
447e9da0 | 662 | } |
447e9da0 | 663 | /* Here, too, "*x > right_x" is because of character terminals. */ |
b0228ace GM |
664 | else if (!w->pseudo_window_p |
665 | && !WINDOW_RIGHTMOST_P (w) | |
666 | && *x > right_x - ux) | |
667 | { | |
668 | /* On the border on the right side of the window? Assume that | |
669 | this area begins at RIGHT_X minus a canonical char width. */ | |
670 | part = ON_VERTICAL_BORDER; | |
671 | } | |
672 | else | |
673 | { | |
ac431108 EZ |
674 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); |
675 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
676 | /* You can never be on a margin area if its width is zero. | |
677 | This is especially important for character terminals. */ | |
678 | if (lmargin_width | |
679 | && *x <= window_box_right (w, LEFT_MARGIN_AREA)) | |
49b996e7 | 680 | part = ON_LEFT_MARGIN; |
ac431108 EZ |
681 | else if (rmargin_width |
682 | && *x >= window_box_left (w, RIGHT_MARGIN_AREA)) | |
49b996e7 GM |
683 | part = ON_RIGHT_MARGIN; |
684 | else | |
685 | { | |
686 | part = ON_TEXT; | |
687 | /* Convert X and Y to window-relative pixel coordinates. */ | |
688 | *x -= left_x; | |
689 | *y -= top_y; | |
690 | } | |
b0228ace | 691 | } |
447e9da0 | 692 | } |
b0228ace GM |
693 | |
694 | return part; | |
d5783c40 JB |
695 | } |
696 | ||
b0228ace | 697 | |
d5783c40 | 698 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
699 | Scoordinates_in_window_p, 2, 2, 0, |
700 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
701 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
702 | measured in characters from the upper-left corner of the frame. | |
703 | \(0 . 0) denotes the character in the upper left corner of the | |
704 | frame. | |
705 | If COORDINATES are in the text portion of WINDOW, | |
706 | the coordinates relative to the window are returned. | |
707 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
708 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
709 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
710 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 711 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
712 | `vertical-line' is returned. |
713 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
714 | or `right-margin' is returned. */) | |
fdb82f93 | 715 | (coordinates, window) |
d5783c40 JB |
716 | register Lisp_Object coordinates, window; |
717 | { | |
5500c422 GM |
718 | struct window *w; |
719 | struct frame *f; | |
d5783c40 | 720 | int x, y; |
5500c422 | 721 | Lisp_Object lx, ly; |
d5783c40 | 722 | |
b7826503 | 723 | CHECK_LIVE_WINDOW (window); |
5500c422 GM |
724 | w = XWINDOW (window); |
725 | f = XFRAME (w->frame); | |
b7826503 | 726 | CHECK_CONS (coordinates); |
5500c422 GM |
727 | lx = Fcar (coordinates); |
728 | ly = Fcdr (coordinates); | |
b7826503 PJ |
729 | CHECK_NUMBER_OR_FLOAT (lx); |
730 | CHECK_NUMBER_OR_FLOAT (ly); | |
5500c422 GM |
731 | x = PIXEL_X_FROM_CANON_X (f, lx); |
732 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
733 | ||
734 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 735 | { |
7442878f | 736 | case ON_NOTHING: |
d5783c40 JB |
737 | return Qnil; |
738 | ||
7442878f GM |
739 | case ON_TEXT: |
740 | /* X and Y are now window relative pixel coordinates. Convert | |
741 | them to canonical char units before returning them. */ | |
5500c422 GM |
742 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), |
743 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 744 | |
7442878f | 745 | case ON_MODE_LINE: |
d5783c40 | 746 | return Qmode_line; |
37962e60 | 747 | |
7442878f | 748 | case ON_VERTICAL_BORDER: |
e5d77022 | 749 | return Qvertical_line; |
d5783c40 | 750 | |
7442878f | 751 | case ON_HEADER_LINE: |
045dee35 | 752 | return Qheader_line; |
5500c422 | 753 | |
7442878f GM |
754 | case ON_LEFT_FRINGE: |
755 | return Qleft_fringe; | |
fbad6f9a | 756 | |
7442878f GM |
757 | case ON_RIGHT_FRINGE: |
758 | return Qright_fringe; | |
fbad6f9a | 759 | |
49b996e7 GM |
760 | case ON_LEFT_MARGIN: |
761 | return Qleft_margin; | |
762 | ||
763 | case ON_RIGHT_MARGIN: | |
764 | return Qright_margin; | |
765 | ||
d5783c40 JB |
766 | default: |
767 | abort (); | |
768 | } | |
769 | } | |
770 | ||
67492200 GM |
771 | |
772 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
773 | Check if window W contains coordinates specified by USER_DATA which |
774 | is actually a pointer to a struct check_window_data CW. | |
775 | ||
776 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
777 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 778 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
779 | zero from this function to stop iterating over windows. */ |
780 | ||
781 | struct check_window_data | |
782 | { | |
783 | Lisp_Object *window; | |
784 | int *x, *y, *part; | |
785 | }; | |
67492200 GM |
786 | |
787 | static int | |
f95464e4 | 788 | check_window_containing (w, user_data) |
67492200 | 789 | struct window *w; |
f95464e4 | 790 | void *user_data; |
67492200 | 791 | { |
f95464e4 | 792 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
793 | enum window_part found; |
794 | int continue_p = 1; | |
67492200 | 795 | |
f95464e4 | 796 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 797 | if (found != ON_NOTHING) |
67492200 | 798 | { |
f95464e4 GM |
799 | *cw->part = found - 1; |
800 | XSETWINDOW (*cw->window, w); | |
7442878f | 801 | continue_p = 0; |
67492200 GM |
802 | } |
803 | ||
7442878f | 804 | return continue_p; |
67492200 GM |
805 | } |
806 | ||
807 | ||
5500c422 GM |
808 | /* Find the window containing frame-relative pixel position X/Y and |
809 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
810 | set *PART to 1; if it is on the separating line between the window | |
811 | and its right sibling, set it to 2; otherwise set it to 0. If | |
812 | there is no window under X, Y return nil and leave *PART | |
67492200 GM |
813 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
814 | ||
815 | This function was previously implemented with a loop cycling over | |
816 | windows with Fnext_window, and starting with the frame's selected | |
817 | window. It turned out that this doesn't work with an | |
818 | implementation of next_window using Vwindow_list, because | |
819 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
820 | tree of F when this function is called asynchronously from | |
821 | note_mouse_highlight. The original loop didn't terminate in this | |
822 | case. */ | |
5500c422 | 823 | |
7ab12479 | 824 | Lisp_Object |
67492200 GM |
825 | window_from_coordinates (f, x, y, part, tool_bar_p) |
826 | struct frame *f; | |
7ab12479 | 827 | int x, y; |
d5783c40 | 828 | int *part; |
9ea173e8 | 829 | int tool_bar_p; |
7ab12479 | 830 | { |
67492200 | 831 | Lisp_Object window; |
f95464e4 | 832 | struct check_window_data cw; |
5500c422 | 833 | |
67492200 | 834 | window = Qnil; |
f95464e4 GM |
835 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
836 | foreach_window (f, check_window_containing, &cw); | |
67492200 GM |
837 | |
838 | /* If not found above, see if it's in the tool bar window, if a tool | |
839 | bar exists. */ | |
840 | if (NILP (window) | |
841 | && tool_bar_p | |
842 | && WINDOWP (f->tool_bar_window) | |
843 | && XINT (XWINDOW (f->tool_bar_window)->height) > 0 | |
7442878f GM |
844 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
845 | != ON_NOTHING)) | |
5500c422 GM |
846 | { |
847 | *part = 0; | |
67492200 | 848 | window = f->tool_bar_window; |
5500c422 | 849 | } |
37962e60 | 850 | |
67492200 | 851 | return window; |
7ab12479 JB |
852 | } |
853 | ||
ab17c3f2 | 854 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
855 | doc: /* Return window containing coordinates X and Y on FRAME. |
856 | If omitted, FRAME defaults to the currently selected frame. | |
857 | The top left corner of the frame is considered to be row 0, | |
858 | column 0. */) | |
859 | (x, y, frame) | |
860 | Lisp_Object x, y, frame; | |
7ab12479 JB |
861 | { |
862 | int part; | |
5500c422 | 863 | struct frame *f; |
7ab12479 | 864 | |
44fa5b1e | 865 | if (NILP (frame)) |
1ae1a37d | 866 | frame = selected_frame; |
b7826503 | 867 | CHECK_LIVE_FRAME (frame); |
5500c422 | 868 | f = XFRAME (frame); |
7ab12479 | 869 | |
5500c422 | 870 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
871 | CHECK_NUMBER_OR_FLOAT (x); |
872 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 GM |
873 | |
874 | return window_from_coordinates (f, | |
875 | PIXEL_X_FROM_CANON_X (f, x), | |
876 | PIXEL_Y_FROM_CANON_Y (f, y), | |
877 | &part, 0); | |
7ab12479 JB |
878 | } |
879 | ||
880 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
881 | doc: /* Return current value of point in WINDOW. |
882 | For a nonselected window, this is the value point would have | |
883 | if that window were selected. | |
884 | ||
885 | Note that, when WINDOW is the selected window and its buffer | |
886 | is also currently selected, the value returned is the same as (point). | |
887 | It would be more strictly correct to return the `top-level' value | |
888 | of point, outside of any save-excursion forms. | |
889 | But that is hard to define. */) | |
890 | (window) | |
7ab12479 JB |
891 | Lisp_Object window; |
892 | { | |
893 | register struct window *w = decode_window (window); | |
894 | ||
895 | if (w == XWINDOW (selected_window) | |
896 | && current_buffer == XBUFFER (w->buffer)) | |
897 | return Fpoint (); | |
898 | return Fmarker_position (w->pointm); | |
899 | } | |
900 | ||
901 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
902 | doc: /* Return position at which display currently starts in WINDOW. |
903 | This is updated by redisplay or by calling `set-window-start'. */) | |
904 | (window) | |
7ab12479 JB |
905 | Lisp_Object window; |
906 | { | |
907 | return Fmarker_position (decode_window (window)->start); | |
908 | } | |
909 | ||
8646118f RS |
910 | /* This is text temporarily removed from the doc string below. |
911 | ||
fdb82f93 PJ |
912 | This function returns nil if the position is not currently known. |
913 | That happens when redisplay is preempted and doesn't finish. | |
914 | If in that case you want to compute where the end of the window would | |
915 | have been if redisplay had finished, do this: | |
916 | (save-excursion | |
917 | (goto-char (window-start window)) | |
918 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
919 | (point))") */ |
920 | ||
478292ed | 921 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
922 | doc: /* Return position at which display currently ends in WINDOW. |
923 | This is updated by redisplay, when it runs to completion. | |
924 | Simply changing the buffer text or setting `window-start' | |
925 | does not update this value. | |
926 | If UPDATE is non-nil, compute the up-to-date position | |
927 | if it isn't already recorded. */) | |
928 | (window, update) | |
478292ed | 929 | Lisp_Object window, update; |
7ab12479 JB |
930 | { |
931 | Lisp_Object value; | |
932 | struct window *w = decode_window (window); | |
5a41ab94 RS |
933 | Lisp_Object buf; |
934 | ||
935 | buf = w->buffer; | |
b7826503 | 936 | CHECK_BUFFER (buf); |
5a41ab94 | 937 | |
8646118f | 938 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
939 | /* If we don't know the end position, return nil. |
940 | The user can compute it with vertical-motion if he wants to. | |
941 | It would be nicer to do it automatically, | |
942 | but that's so slow that it would probably bother people. */ | |
943 | if (NILP (w->window_end_valid)) | |
944 | return Qnil; | |
8646118f | 945 | #endif |
7250968e | 946 | |
478292ed RS |
947 | if (! NILP (update) |
948 | && ! (! NILP (w->window_end_valid) | |
949 | && XFASTINT (w->last_modified) >= MODIFF)) | |
950 | { | |
cbc099e5 GM |
951 | struct text_pos startp; |
952 | struct it it; | |
99593a9d | 953 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
954 | |
955 | /* In case W->start is out of the range, use something | |
956 | reasonable. This situation occured when loading a file with | |
957 | `-l' containing a call to `rmail' with subsequent other | |
958 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 959 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 960 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 961 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 962 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 963 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 964 | else |
cbc099e5 GM |
965 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
966 | ||
967 | /* Cannot use Fvertical_motion because that function doesn't | |
968 | cope with variable-height lines. */ | |
99593a9d GM |
969 | if (b != current_buffer) |
970 | { | |
971 | old_buffer = current_buffer; | |
972 | set_buffer_internal (b); | |
973 | } | |
974 | ||
cbc099e5 GM |
975 | start_display (&it, w, startp); |
976 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
977 | if (it.current_y < it.last_visible_y) |
978 | move_it_past_eol (&it); | |
cbc099e5 | 979 | value = make_number (IT_CHARPOS (it)); |
99593a9d GM |
980 | |
981 | if (old_buffer) | |
982 | set_buffer_internal (old_buffer); | |
478292ed RS |
983 | } |
984 | else | |
cbc099e5 | 985 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
986 | |
987 | return value; | |
988 | } | |
989 | ||
990 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
fdb82f93 PJ |
991 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. */) |
992 | (window, pos) | |
7ab12479 JB |
993 | Lisp_Object window, pos; |
994 | { | |
995 | register struct window *w = decode_window (window); | |
996 | ||
b7826503 | 997 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
998 | if (w == XWINDOW (selected_window) |
999 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1000 | Fgoto_char (pos); |
1001 | else | |
1002 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1003 | |
0685cb3c GM |
1004 | /* We have to make sure that redisplay updates the window to show |
1005 | the new value of point. */ | |
1006 | if (!EQ (window, selected_window)) | |
799417bd | 1007 | ++windows_or_buffers_changed; |
ce7fae7d | 1008 | |
7ab12479 JB |
1009 | return pos; |
1010 | } | |
1011 | ||
1012 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 PJ |
1013 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
1014 | Optional third arg NOFORCE non-nil inhibits next redisplay | |
1015 | from overriding motion of point in order to display at this exact start. */) | |
1016 | (window, pos, noforce) | |
7ab12479 JB |
1017 | Lisp_Object window, pos, noforce; |
1018 | { | |
1019 | register struct window *w = decode_window (window); | |
1020 | ||
b7826503 | 1021 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1022 | set_marker_restricted (w->start, pos, w->buffer); |
1023 | /* this is not right, but much easier than doing what is right. */ | |
1024 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1025 | if (NILP (noforce)) |
7ab12479 JB |
1026 | w->force_start = Qt; |
1027 | w->update_mode_line = Qt; | |
d834a2e9 | 1028 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1029 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1030 | if (!EQ (window, selected_window)) |
1031 | windows_or_buffers_changed++; | |
ce7fae7d | 1032 | |
7ab12479 JB |
1033 | return pos; |
1034 | } | |
1035 | ||
1036 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1037 | 1, 1, 0, | |
fdb82f93 PJ |
1038 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1039 | See also `set-window-dedicated-p'. */) | |
1040 | (window) | |
7ab12479 JB |
1041 | Lisp_Object window; |
1042 | { | |
1043 | return decode_window (window)->dedicated; | |
1044 | } | |
1045 | ||
d207b766 RS |
1046 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1047 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1048 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1049 | If it is dedicated, Emacs will not automatically change | |
1050 | which buffer appears in it. | |
1051 | The second argument is the new value for the dedication flag; | |
1052 | non-nil means yes. */) | |
1053 | (window, arg) | |
1054 | Lisp_Object window, arg; | |
7ab12479 JB |
1055 | { |
1056 | register struct window *w = decode_window (window); | |
1057 | ||
265a9e55 | 1058 | if (NILP (arg)) |
7ab12479 JB |
1059 | w->dedicated = Qnil; |
1060 | else | |
d207b766 | 1061 | w->dedicated = Qt; |
7ab12479 JB |
1062 | |
1063 | return w->dedicated; | |
1064 | } | |
1065 | ||
1066 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1067 | 0, 1, 0, | |
fdb82f93 PJ |
1068 | doc: /* Return the display-table that WINDOW is using. */) |
1069 | (window) | |
7ab12479 JB |
1070 | Lisp_Object window; |
1071 | { | |
1072 | return decode_window (window)->display_table; | |
1073 | } | |
1074 | ||
5500c422 GM |
1075 | /* Get the display table for use on window W. This is either W's |
1076 | display table or W's buffer's display table. Ignore the specified | |
1077 | tables if they are not valid; if no valid table is specified, | |
1078 | return 0. */ | |
7ab12479 | 1079 | |
319315f1 | 1080 | struct Lisp_Char_Table * |
7ab12479 JB |
1081 | window_display_table (w) |
1082 | struct window *w; | |
1083 | { | |
c756cdbe GM |
1084 | struct Lisp_Char_Table *dp = NULL; |
1085 | ||
1086 | if (DISP_TABLE_P (w->display_table)) | |
1087 | dp = XCHAR_TABLE (w->display_table); | |
1088 | else if (BUFFERP (w->buffer)) | |
1089 | { | |
1090 | struct buffer *b = XBUFFER (w->buffer); | |
1091 | ||
1092 | if (DISP_TABLE_P (b->display_table)) | |
1093 | dp = XCHAR_TABLE (b->display_table); | |
1094 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1095 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1096 | } | |
171d003c | 1097 | |
c756cdbe | 1098 | return dp; |
7ab12479 JB |
1099 | } |
1100 | ||
3a2712f9 | 1101 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1102 | doc: /* Set WINDOW's display-table to TABLE. */) |
1103 | (window, table) | |
7ab12479 JB |
1104 | register Lisp_Object window, table; |
1105 | { | |
1106 | register struct window *w; | |
7ab12479 JB |
1107 | |
1108 | w = decode_window (window); | |
1109 | w->display_table = table; | |
1110 | return table; | |
1111 | } | |
1112 | \f | |
1113 | /* Record info on buffer window w is displaying | |
1114 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1115 | static void |
7ab12479 JB |
1116 | unshow_buffer (w) |
1117 | register struct window *w; | |
1118 | { | |
12cae7c0 | 1119 | Lisp_Object buf; |
b73ea88e | 1120 | struct buffer *b; |
7ab12479 | 1121 | |
12cae7c0 | 1122 | buf = w->buffer; |
b73ea88e RS |
1123 | b = XBUFFER (buf); |
1124 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1125 | abort (); |
1126 | ||
573f41ab | 1127 | #if 0 |
7ab12479 JB |
1128 | if (w == XWINDOW (selected_window) |
1129 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1130 | /* Do this except when the selected window's buffer | |
1131 | is being removed from some other window. */ | |
573f41ab RS |
1132 | #endif |
1133 | /* last_window_start records the start position that this buffer | |
1134 | had in the last window to be disconnected from it. | |
1135 | Now that this statement is unconditional, | |
1136 | it is possible for the buffer to be displayed in the | |
1137 | selected window, while last_window_start reflects another | |
1138 | window which was recently showing the same buffer. | |
1139 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1140 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1141 | |
1142 | /* Point in the selected window's buffer | |
1143 | is actually stored in that buffer, and the window's pointm isn't used. | |
1144 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1145 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1146 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1147 | && !(WINDOWP (b->last_selected_window) |
1148 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1149 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1150 | temp_set_point_both (b, |
1151 | clip_to_bounds (BUF_BEGV (b), | |
1152 | XMARKER (w->pointm)->charpos, | |
1153 | BUF_ZV (b)), | |
1154 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1155 | marker_byte_position (w->pointm), | |
1156 | BUF_ZV_BYTE (b))); | |
719eaeb1 | 1157 | |
8801a864 KR |
1158 | if (WINDOWP (b->last_selected_window) |
1159 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1160 | b->last_selected_window = Qnil; |
7ab12479 JB |
1161 | } |
1162 | ||
1163 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1164 | static void |
7ab12479 JB |
1165 | replace_window (old, replacement) |
1166 | Lisp_Object old, replacement; | |
1167 | { | |
1168 | register Lisp_Object tem; | |
1169 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1170 | ||
44fa5b1e JB |
1171 | /* If OLD is its frame's root_window, then replacement is the new |
1172 | root_window for that frame. */ | |
7ab12479 | 1173 | |
7f4161e0 | 1174 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1175 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
1176 | |
1177 | p->left = o->left; | |
1178 | p->top = o->top; | |
1179 | p->width = o->width; | |
1180 | p->height = o->height; | |
5500c422 GM |
1181 | p->desired_matrix = p->current_matrix = 0; |
1182 | p->vscroll = 0; | |
1183 | bzero (&p->cursor, sizeof (p->cursor)); | |
1184 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1185 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1186 | p->phys_cursor_type = -1; | |
4b26579e | 1187 | p->phys_cursor_width = -1; |
5500c422 GM |
1188 | p->must_be_updated_p = 0; |
1189 | p->pseudo_window_p = 0; | |
1190 | XSETFASTINT (p->window_end_vpos, 0); | |
1191 | XSETFASTINT (p->window_end_pos, 0); | |
1192 | p->window_end_valid = Qnil; | |
7bbb5782 | 1193 | p->frozen_window_start_p = 0; |
f984d4fc | 1194 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
1195 | |
1196 | p->next = tem = o->next; | |
265a9e55 | 1197 | if (!NILP (tem)) |
7ab12479 JB |
1198 | XWINDOW (tem)->prev = replacement; |
1199 | ||
1200 | p->prev = tem = o->prev; | |
265a9e55 | 1201 | if (!NILP (tem)) |
7ab12479 JB |
1202 | XWINDOW (tem)->next = replacement; |
1203 | ||
1204 | p->parent = tem = o->parent; | |
265a9e55 | 1205 | if (!NILP (tem)) |
7ab12479 JB |
1206 | { |
1207 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1208 | XWINDOW (tem)->vchild = replacement; | |
1209 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1210 | XWINDOW (tem)->hchild = replacement; | |
1211 | } | |
1212 | ||
1213 | /*** Here, if replacement is a vertical combination | |
1214 | and so is its new parent, we should make replacement's | |
1215 | children be children of that parent instead. ***/ | |
1216 | } | |
1217 | ||
1218 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1219 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1220 | (window) | |
7ab12479 | 1221 | register Lisp_Object window; |
543f5fb1 RS |
1222 | { |
1223 | delete_window (window); | |
1224 | ||
1225 | if (! NILP (Vwindow_configuration_change_hook) | |
1226 | && ! NILP (Vrun_hooks)) | |
1227 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1228 | ||
1229 | return Qnil; | |
1230 | } | |
1231 | ||
5e14b1fc | 1232 | void |
543f5fb1 RS |
1233 | delete_window (window) |
1234 | register Lisp_Object window; | |
7ab12479 JB |
1235 | { |
1236 | register Lisp_Object tem, parent, sib; | |
1237 | register struct window *p; | |
1238 | register struct window *par; | |
951f9df5 | 1239 | struct frame *f; |
7ab12479 | 1240 | |
605be8af JB |
1241 | /* Because this function is called by other C code on non-leaf |
1242 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1243 | so we can't decode_window here. */ | |
265a9e55 | 1244 | if (NILP (window)) |
7ab12479 JB |
1245 | window = selected_window; |
1246 | else | |
b7826503 | 1247 | CHECK_WINDOW (window); |
7ab12479 | 1248 | p = XWINDOW (window); |
605be8af JB |
1249 | |
1250 | /* It's okay to delete an already-deleted window. */ | |
1251 | if (NILP (p->buffer) | |
1252 | && NILP (p->hchild) | |
1253 | && NILP (p->vchild)) | |
296b535c | 1254 | return; |
605be8af | 1255 | |
7ab12479 | 1256 | parent = p->parent; |
265a9e55 | 1257 | if (NILP (parent)) |
7ab12479 JB |
1258 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1259 | par = XWINDOW (parent); | |
1260 | ||
1261 | windows_or_buffers_changed++; | |
67492200 | 1262 | Vwindow_list = Qnil; |
951f9df5 GM |
1263 | f = XFRAME (WINDOW_FRAME (p)); |
1264 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1265 | |
605be8af JB |
1266 | /* Are we trying to delete any frame's selected window? */ |
1267 | { | |
192c3131 | 1268 | Lisp_Object swindow, pwindow; |
605be8af | 1269 | |
0def0403 RS |
1270 | /* See if the frame's selected window is either WINDOW |
1271 | or any subwindow of it, by finding all that window's parents | |
1272 | and comparing each one with WINDOW. */ | |
192c3131 | 1273 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1274 | |
192c3131 | 1275 | while (1) |
0def0403 | 1276 | { |
192c3131 RS |
1277 | pwindow = swindow; |
1278 | while (!NILP (pwindow)) | |
1279 | { | |
1280 | if (EQ (window, pwindow)) | |
1281 | break; | |
1282 | pwindow = XWINDOW (pwindow)->parent; | |
1283 | } | |
1284 | ||
1285 | /* If the window being deleted is not a parent of SWINDOW, | |
1286 | then SWINDOW is ok as the new selected window. */ | |
1287 | if (!EQ (window, pwindow)) | |
0def0403 | 1288 | break; |
192c3131 RS |
1289 | /* Otherwise, try another window for SWINDOW. */ |
1290 | swindow = Fnext_window (swindow, Qlambda, Qnil);; | |
1291 | ||
1292 | /* If we get back to the frame's selected window, | |
1293 | it means there was no acceptable alternative, | |
1294 | so we cannot delete. */ | |
1295 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1296 | error ("Cannot delete window"); | |
0def0403 RS |
1297 | } |
1298 | ||
192c3131 RS |
1299 | /* If we need to change SWINDOW, do it. */ |
1300 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1301 | { |
605be8af JB |
1302 | /* If we're about to delete the selected window on the |
1303 | selected frame, then we should use Fselect_window to select | |
1304 | the new window. On the other hand, if we're about to | |
1305 | delete the selected window on any other frame, we shouldn't do | |
1306 | anything but set the frame's selected_window slot. */ | |
192c3131 RS |
1307 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
1308 | Fselect_window (swindow); | |
605be8af | 1309 | else |
192c3131 | 1310 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1311 | } |
1312 | } | |
7ab12479 JB |
1313 | |
1314 | tem = p->buffer; | |
1315 | /* tem is null for dummy parent windows | |
1316 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1317 | if (!NILP (tem)) |
7ab12479 JB |
1318 | { |
1319 | unshow_buffer (p); | |
1320 | unchain_marker (p->pointm); | |
1321 | unchain_marker (p->start); | |
7ab12479 JB |
1322 | } |
1323 | ||
05e71564 GM |
1324 | /* Free window glyph matrices. It is sure that they are allocated |
1325 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1326 | events and other events that access glyph matrices are not | |
1327 | processed while we are changing them. */ | |
1328 | BLOCK_INPUT; | |
951f9df5 | 1329 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1330 | |
7ab12479 | 1331 | tem = p->next; |
265a9e55 | 1332 | if (!NILP (tem)) |
7ab12479 JB |
1333 | XWINDOW (tem)->prev = p->prev; |
1334 | ||
1335 | tem = p->prev; | |
265a9e55 | 1336 | if (!NILP (tem)) |
7ab12479 JB |
1337 | XWINDOW (tem)->next = p->next; |
1338 | ||
1339 | if (EQ (window, par->hchild)) | |
1340 | par->hchild = p->next; | |
1341 | if (EQ (window, par->vchild)) | |
1342 | par->vchild = p->next; | |
1343 | ||
1344 | /* Find one of our siblings to give our space to. */ | |
1345 | sib = p->prev; | |
265a9e55 | 1346 | if (NILP (sib)) |
7ab12479 JB |
1347 | { |
1348 | /* If p gives its space to its next sibling, that sibling needs | |
1349 | to have its top/left side pulled back to where p's is. | |
1350 | set_window_{height,width} will re-position the sibling's | |
1351 | children. */ | |
1352 | sib = p->next; | |
7f4161e0 JB |
1353 | XWINDOW (sib)->top = p->top; |
1354 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1355 | } |
1356 | ||
1357 | /* Stretch that sibling. */ | |
265a9e55 | 1358 | if (!NILP (par->vchild)) |
7ab12479 JB |
1359 | set_window_height (sib, |
1360 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1361 | 1); | |
265a9e55 | 1362 | if (!NILP (par->hchild)) |
7ab12479 JB |
1363 | set_window_width (sib, |
1364 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1365 | 1); | |
1366 | ||
1367 | /* If parent now has only one child, | |
1368 | put the child into the parent's place. */ | |
7ab12479 | 1369 | tem = par->hchild; |
265a9e55 | 1370 | if (NILP (tem)) |
7ab12479 | 1371 | tem = par->vchild; |
265a9e55 | 1372 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1373 | replace_window (parent, tem); |
605be8af JB |
1374 | |
1375 | /* Since we may be deleting combination windows, we must make sure that | |
1376 | not only p but all its children have been marked as deleted. */ | |
1377 | if (! NILP (p->hchild)) | |
1378 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1379 | else if (! NILP (p->vchild)) | |
1380 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1381 | ||
1382 | /* Mark this window as deleted. */ | |
1383 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1384 | |
1385 | /* Adjust glyph matrices. */ | |
951f9df5 | 1386 | adjust_glyphs (f); |
05e71564 | 1387 | UNBLOCK_INPUT; |
7ab12479 | 1388 | } |
67492200 GM |
1389 | |
1390 | ||
7ab12479 | 1391 | \f |
67492200 GM |
1392 | /*********************************************************************** |
1393 | Window List | |
1394 | ***********************************************************************/ | |
1395 | ||
f95464e4 GM |
1396 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1397 | pointer. This is a callback function for foreach_window, used in | |
1398 | function window_list. */ | |
67492200 GM |
1399 | |
1400 | static int | |
f95464e4 | 1401 | add_window_to_list (w, user_data) |
67492200 | 1402 | struct window *w; |
f95464e4 | 1403 | void *user_data; |
67492200 | 1404 | { |
f95464e4 | 1405 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1406 | Lisp_Object window; |
1407 | XSETWINDOW (window, w); | |
212116d6 | 1408 | *list = Fcons (window, *list); |
67492200 GM |
1409 | return 1; |
1410 | } | |
1411 | ||
1412 | ||
1413 | /* Return a list of all windows, for use by next_window. If | |
1414 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1415 | list, cache it in Vwindow_list, and return that. */ | |
1416 | ||
1417 | static Lisp_Object | |
1418 | window_list () | |
1419 | { | |
1420 | if (!CONSP (Vwindow_list)) | |
1421 | { | |
1422 | Lisp_Object tail; | |
212116d6 | 1423 | |
67492200 GM |
1424 | Vwindow_list = Qnil; |
1425 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1426 | { |
1427 | Lisp_Object args[2]; | |
1428 | ||
1429 | /* We are visiting windows in canonical order, and add | |
1430 | new windows at the front of args[1], which means we | |
1431 | have to reverse this list at the end. */ | |
1432 | args[1] = Qnil; | |
1433 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1434 | args[0] = Vwindow_list; | |
1435 | args[1] = Fnreverse (args[1]); | |
1436 | Vwindow_list = Fnconc (2, args); | |
1437 | } | |
67492200 GM |
1438 | } |
1439 | ||
1440 | return Vwindow_list; | |
1441 | } | |
1442 | ||
1443 | ||
118ea242 GM |
1444 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1445 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1446 | |
118ea242 GM |
1447 | MINIBUF t means WINDOW may be minibuffer windows. |
1448 | `lambda' means WINDOW may not be a minibuffer window. | |
1449 | a window means a specific minibuffer window | |
67492200 | 1450 | |
118ea242 GM |
1451 | ALL_FRAMES t means search all frames, |
1452 | nil means search just current frame, | |
1453 | `visible' means search just visible frames, | |
1454 | 0 means search visible and iconified frames, | |
1455 | a window means search the frame that window belongs to, | |
1456 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1457 | |
1458 | static int | |
118ea242 GM |
1459 | candidate_window_p (window, owindow, minibuf, all_frames) |
1460 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1461 | { |
1462 | struct window *w = XWINDOW (window); | |
1463 | struct frame *f = XFRAME (w->frame); | |
1464 | int candidate_p = 1; | |
1465 | ||
1466 | if (!BUFFERP (w->buffer)) | |
1467 | candidate_p = 0; | |
1468 | else if (MINI_WINDOW_P (w) | |
1469 | && (EQ (minibuf, Qlambda) | |
1470 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1471 | { | |
1472 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1473 | If it is a window, consider only that one. */ | |
1474 | candidate_p = 0; | |
1475 | } | |
118ea242 GM |
1476 | else if (EQ (all_frames, Qt)) |
1477 | candidate_p = 1; | |
67492200 | 1478 | else if (NILP (all_frames)) |
118ea242 GM |
1479 | { |
1480 | xassert (WINDOWP (owindow)); | |
1481 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1482 | } | |
67492200 GM |
1483 | else if (EQ (all_frames, Qvisible)) |
1484 | { | |
1485 | FRAME_SAMPLE_VISIBILITY (f); | |
1486 | candidate_p = FRAME_VISIBLE_P (f); | |
1487 | } | |
1488 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1489 | { | |
1490 | FRAME_SAMPLE_VISIBILITY (f); | |
1491 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1492 | } | |
67492200 GM |
1493 | else if (WINDOWP (all_frames)) |
1494 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1495 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1496 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1497 | else if (FRAMEP (all_frames)) |
1498 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1499 | |
1500 | return candidate_p; | |
1501 | } | |
1502 | ||
1503 | ||
1504 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1505 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1506 | ALL_FRAMES. */ | |
1507 | ||
1508 | static void | |
1509 | decode_next_window_args (window, minibuf, all_frames) | |
1510 | Lisp_Object *window, *minibuf, *all_frames; | |
1511 | { | |
1512 | if (NILP (*window)) | |
1513 | *window = selected_window; | |
1514 | else | |
b7826503 | 1515 | CHECK_LIVE_WINDOW (*window); |
67492200 GM |
1516 | |
1517 | /* MINIBUF nil may or may not include minibuffers. Decide if it | |
1518 | does. */ | |
1519 | if (NILP (*minibuf)) | |
1520 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1521 | else if (!EQ (*minibuf, Qt)) | |
1522 | *minibuf = Qlambda; | |
1523 | ||
1524 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' | |
1525 | => count none of them, or a specific minibuffer window (the | |
1526 | active one) to count. */ | |
1527 | ||
1528 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1529 | if (NILP (*all_frames)) | |
1530 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1531 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1532 | : Qnil); | |
1533 | else if (EQ (*all_frames, Qvisible)) | |
1534 | ; | |
1535 | else if (XFASTINT (*all_frames) == 0) | |
1536 | ; | |
1537 | else if (FRAMEP (*all_frames)) | |
1538 | ; | |
1539 | else if (!EQ (*all_frames, Qt)) | |
1540 | *all_frames = Qnil; | |
1541 | ||
1542 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning | |
1543 | search just current frame, `visible' meaning search just visible | |
1544 | frames, 0 meaning search visible and iconified frames, or a | |
1545 | window, meaning search the frame that window belongs to, or a | |
1546 | frame, meaning consider windows on that frame, only. */ | |
1547 | } | |
1548 | ||
1549 | ||
1550 | /* Return the next or previous window of WINDOW in canonical ordering | |
1551 | of windows. NEXT_P non-zero means return the next window. See the | |
1552 | documentation string of next-window for the meaning of MINIBUF and | |
1553 | ALL_FRAMES. */ | |
1554 | ||
1555 | static Lisp_Object | |
1556 | next_window (window, minibuf, all_frames, next_p) | |
1557 | Lisp_Object window, minibuf, all_frames; | |
1558 | int next_p; | |
1559 | { | |
1560 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1561 | ||
1562 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just | |
1563 | return the first window on the frame. */ | |
1564 | if (FRAMEP (all_frames) | |
1565 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1566 | return Fframe_first_window (all_frames); | |
1567 | ||
212116d6 | 1568 | if (next_p) |
67492200 GM |
1569 | { |
1570 | Lisp_Object list; | |
1571 | ||
1572 | /* Find WINDOW in the list of all windows. */ | |
1573 | list = Fmemq (window, window_list ()); | |
1574 | ||
1575 | /* Scan forward from WINDOW to the end of the window list. */ | |
1576 | if (CONSP (list)) | |
1577 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1578 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1579 | break; |
1580 | ||
1581 | /* Scan from the start of the window list up to WINDOW. */ | |
1582 | if (!CONSP (list)) | |
1583 | for (list = Vwindow_list; | |
1584 | CONSP (list) && !EQ (XCAR (list), window); | |
1585 | list = XCDR (list)) | |
118ea242 | 1586 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1587 | break; |
1588 | ||
1589 | if (CONSP (list)) | |
1590 | window = XCAR (list); | |
1591 | } | |
1592 | else | |
1593 | { | |
1594 | Lisp_Object candidate, list; | |
1595 | ||
1596 | /* Scan through the list of windows for candidates. If there are | |
1597 | candidate windows in front of WINDOW, the last one of these | |
1598 | is the one we want. If there are candidates following WINDOW | |
1599 | in the list, again the last one of these is the one we want. */ | |
1600 | candidate = Qnil; | |
1601 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1602 | { | |
1603 | if (EQ (XCAR (list), window)) | |
1604 | { | |
1605 | if (WINDOWP (candidate)) | |
1606 | break; | |
1607 | } | |
118ea242 GM |
1608 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1609 | all_frames)) | |
67492200 GM |
1610 | candidate = XCAR (list); |
1611 | } | |
1612 | ||
1613 | if (WINDOWP (candidate)) | |
1614 | window = candidate; | |
1615 | } | |
1616 | ||
1617 | return window; | |
1618 | } | |
7ab12479 | 1619 | |
7ab12479 | 1620 | |
26f6279d | 1621 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1622 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1623 | If omitted, WINDOW defaults to the selected window. | |
1624 | ||
1625 | Optional second arg MINIBUF t means count the minibuffer window even | |
1626 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1627 | it is active. MINIBUF neither t nor nil means not to count the | |
1628 | minibuffer even if it is active. | |
1629 | ||
1630 | Several frames may share a single minibuffer; if the minibuffer | |
1631 | counts, all windows on all frames that share that minibuffer count | |
1632 | too. Therefore, `next-window' can be used to iterate through the | |
1633 | set of windows even when the minibuffer is on another frame. If the | |
1634 | minibuffer does not count, only windows from WINDOW's frame count. | |
1635 | ||
1636 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1637 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1638 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1639 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1640 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1641 | Anything else means restrict to WINDOW's frame. | |
1642 | ||
1643 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1644 | `next-window' to iterate through the entire cycle of acceptable | |
1645 | windows, eventually ending up back at the window you started with. | |
1646 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1647 | (window, minibuf, all_frames) | |
67492200 | 1648 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1649 | { |
67492200 | 1650 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1651 | } |
1652 | ||
67492200 | 1653 | |
26f6279d | 1654 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1655 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1656 | If omitted, WINDOW defaults to the selected window. | |
1657 | ||
1658 | Optional second arg MINIBUF t means count the minibuffer window even | |
1659 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1660 | it is active. MINIBUF neither t nor nil means not to count the | |
1661 | minibuffer even if it is active. | |
1662 | ||
1663 | Several frames may share a single minibuffer; if the minibuffer | |
1664 | counts, all windows on all frames that share that minibuffer count | |
1665 | too. Therefore, `previous-window' can be used to iterate through | |
1666 | the set of windows even when the minibuffer is on another frame. If | |
1667 | the minibuffer does not count, only windows from WINDOW's frame count | |
1668 | ||
1669 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1670 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1671 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1672 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1673 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1674 | Anything else means restrict to WINDOW's frame. | |
1675 | ||
1676 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1677 | `previous-window' to iterate through the entire cycle of acceptable | |
1678 | windows, eventually ending up back at the window you started with. | |
1679 | `next-window' traverses the same cycle, in the reverse order. */) | |
1680 | (window, minibuf, all_frames) | |
67492200 | 1681 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1682 | { |
67492200 | 1683 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1684 | } |
1685 | ||
67492200 | 1686 | |
62c07cc7 | 1687 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1688 | doc: /* Select the ARG'th different window on this frame. |
1689 | All windows on current frame are arranged in a cyclic order. | |
1690 | This command selects the window ARG steps away in that order. | |
1691 | A negative ARG moves in the opposite order. If the optional second | |
1692 | argument ALL_FRAMES is non-nil, cycle through all frames. */) | |
1693 | (arg, all_frames) | |
67492200 | 1694 | Lisp_Object arg, all_frames; |
7ab12479 | 1695 | { |
67492200 GM |
1696 | Lisp_Object window; |
1697 | int i; | |
7ab12479 | 1698 | |
b7826503 | 1699 | CHECK_NUMBER (arg); |
67492200 GM |
1700 | window = selected_window; |
1701 | ||
1702 | for (i = XINT (arg); i > 0; --i) | |
1703 | window = Fnext_window (window, Qnil, all_frames); | |
1704 | for (; i < 0; ++i) | |
1705 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1706 | |
67492200 | 1707 | Fselect_window (window); |
7ab12479 JB |
1708 | return Qnil; |
1709 | } | |
67492200 GM |
1710 | |
1711 | ||
1712 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1713 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1714 | FRAME nil or omitted means use the selected frame. | |
1715 | WINDOW nil or omitted means use the selected window. | |
1716 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1717 | MINIBUF nil or omitted means include the minibuffer window only | |
1718 | if it's active. | |
1719 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1720 | (frame, minibuf, window) | |
cd2904bd GM |
1721 | Lisp_Object frame, minibuf, window; |
1722 | { | |
cd2904bd GM |
1723 | if (NILP (window)) |
1724 | window = selected_window; | |
1725 | if (NILP (frame)) | |
1726 | frame = selected_frame; | |
1727 | ||
1728 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1729 | error ("Window is on a different frame"); | |
1730 | ||
1731 | return window_list_1 (window, minibuf, frame); | |
1732 | } | |
1733 | ||
1734 | ||
1735 | /* Return a list of windows in canonical ordering. Arguments are like | |
1736 | for `next-window'. */ | |
1737 | ||
1738 | static Lisp_Object | |
1739 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1740 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1741 | { |
1742 | Lisp_Object tail, list; | |
1743 | ||
1744 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1745 | list = Qnil; | |
1746 | ||
1747 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
118ea242 | 1748 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 GM |
1749 | list = Fcons (XCAR (tail), list); |
1750 | ||
118ea242 | 1751 | return Fnreverse (list); |
67492200 GM |
1752 | } |
1753 | ||
1754 | ||
7ab12479 JB |
1755 | \f |
1756 | /* Look at all windows, performing an operation specified by TYPE | |
1757 | with argument OBJ. | |
75d8f668 | 1758 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1759 | Qnil, look at just the selected frame; |
89bca612 | 1760 | Qvisible, look at visible frames; |
75d8f668 | 1761 | a frame, just look at windows on that frame. |
85fe3b5e | 1762 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1763 | |
1764 | enum window_loop | |
1765 | { | |
1766 | WINDOW_LOOP_UNUSED, | |
1767 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1768 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1769 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1770 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1771 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1772 | UNSHOW_BUFFER, /* Arg is buffer */ |
1773 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1774 | }; |
1775 | ||
1776 | static Lisp_Object | |
44fa5b1e | 1777 | window_loop (type, obj, mini, frames) |
7ab12479 | 1778 | enum window_loop type; |
118ea242 | 1779 | Lisp_Object obj, frames; |
7ab12479 JB |
1780 | int mini; |
1781 | { | |
118ea242 GM |
1782 | Lisp_Object window, windows, best_window, frame_arg; |
1783 | struct frame *f; | |
ffdc852d | 1784 | struct gcpro gcpro1; |
118ea242 | 1785 | |
44fa5b1e JB |
1786 | /* If we're only looping through windows on a particular frame, |
1787 | frame points to that frame. If we're looping through windows | |
1788 | on all frames, frame is 0. */ | |
1789 | if (FRAMEP (frames)) | |
118ea242 | 1790 | f = XFRAME (frames); |
44fa5b1e | 1791 | else if (NILP (frames)) |
118ea242 | 1792 | f = SELECTED_FRAME (); |
7ab12479 | 1793 | else |
118ea242 GM |
1794 | f = NULL; |
1795 | ||
1796 | if (f) | |
89bca612 | 1797 | frame_arg = Qlambda; |
f812f9c6 RS |
1798 | else if (XFASTINT (frames) == 0) |
1799 | frame_arg = frames; | |
89bca612 RS |
1800 | else if (EQ (frames, Qvisible)) |
1801 | frame_arg = frames; | |
118ea242 GM |
1802 | else |
1803 | frame_arg = Qt; | |
7ab12479 | 1804 | |
89bca612 RS |
1805 | /* frame_arg is Qlambda to stick to one frame, |
1806 | Qvisible to consider all visible frames, | |
1807 | or Qt otherwise. */ | |
1808 | ||
7ab12479 | 1809 | /* Pick a window to start with. */ |
017b2bad | 1810 | if (WINDOWP (obj)) |
118ea242 GM |
1811 | window = obj; |
1812 | else if (f) | |
1813 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1814 | else |
118ea242 | 1815 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1816 | |
cd2904bd | 1817 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1818 | GCPRO1 (windows); |
7ab12479 | 1819 | best_window = Qnil; |
118ea242 GM |
1820 | |
1821 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1822 | { |
118ea242 GM |
1823 | struct window *w; |
1824 | ||
1825 | window = XCAR (windows); | |
1826 | w = XWINDOW (window); | |
1827 | ||
1828 | /* Note that we do not pay attention here to whether the frame | |
1829 | is visible, since Fwindow_list skips non-visible frames if | |
1830 | that is desired, under the control of frame_arg. */ | |
1831 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1832 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1833 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1834 | || (mini && minibuf_level > 0)) |
1835 | switch (type) | |
1836 | { | |
1837 | case GET_BUFFER_WINDOW: | |
118ea242 | 1838 | if (EQ (w->buffer, obj) |
5c204627 RS |
1839 | /* Don't find any minibuffer window |
1840 | except the one that is currently in use. */ | |
118ea242 GM |
1841 | && (MINI_WINDOW_P (w) |
1842 | ? EQ (window, minibuf_window) | |
1843 | : 1)) | |
1844 | { | |
5ddc1b75 GM |
1845 | if (NILP (best_window)) |
1846 | best_window = window; | |
1847 | else if (EQ (window, selected_window)) | |
1848 | /* For compatibility with 20.x, prefer to return | |
1849 | selected-window. */ | |
1850 | best_window = window; | |
118ea242 | 1851 | } |
7ab12479 JB |
1852 | break; |
1853 | ||
1854 | case GET_LRU_WINDOW: | |
1855 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1856 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1857 | break; |
7ab12479 | 1858 | /* Ignore dedicated windows and minibuffers. */ |
118ea242 | 1859 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
7ab12479 | 1860 | break; |
265a9e55 | 1861 | if (NILP (best_window) |
7ab12479 | 1862 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1863 | > XFASTINT (w->use_time))) |
1864 | best_window = window; | |
7ab12479 JB |
1865 | break; |
1866 | ||
1867 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1868 | if (!EQ (window, obj)) |
1869 | Fdelete_window (window); | |
7ab12479 JB |
1870 | break; |
1871 | ||
1872 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1873 | if (EQ (w->buffer, obj)) |
7ab12479 | 1874 | { |
118ea242 | 1875 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1876 | |
1877 | /* If this window is dedicated, and in a frame of its own, | |
1878 | kill the frame. */ | |
118ea242 GM |
1879 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1880 | && !NILP (w->dedicated) | |
3548e138 | 1881 | && other_visible_frames (f)) |
7ab12479 | 1882 | { |
3548e138 RS |
1883 | /* Skip the other windows on this frame. |
1884 | There might be one, the minibuffer! */ | |
118ea242 GM |
1885 | while (CONSP (XCDR (windows)) |
1886 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1887 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1888 | windows = XCDR (windows); | |
1889 | ||
3548e138 | 1890 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1891 | Fdelete_frame (w->frame, Qnil); |
1892 | } | |
1893 | else if (NILP (w->parent)) | |
1894 | { | |
1895 | /* If we're deleting the buffer displayed in the | |
1896 | only window on the frame, find a new buffer to | |
1897 | display there. */ | |
1898 | Lisp_Object buffer; | |
1899 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
118ea242 GM |
1900 | Fset_window_buffer (window, buffer); |
1901 | if (EQ (window, selected_window)) | |
1902 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1903 | } |
1904 | else | |
118ea242 | 1905 | Fdelete_window (window); |
7ab12479 JB |
1906 | } |
1907 | break; | |
1908 | ||
1909 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1910 | { |
118ea242 | 1911 | /* Ignore dedicated windows and minibuffers. */ |
c930dfab | 1912 | if (MINI_WINDOW_P (w) || !NILP (w->dedicated)) |
118ea242 GM |
1913 | break; |
1914 | ||
c930dfab | 1915 | if (NILP (best_window)) |
118ea242 | 1916 | best_window = window; |
c930dfab GM |
1917 | else |
1918 | { | |
1919 | struct window *b = XWINDOW (best_window); | |
1920 | if (XFASTINT (w->height) * XFASTINT (w->width) | |
1921 | > XFASTINT (b->height) * XFASTINT (b->width)) | |
1922 | best_window = window; | |
1923 | } | |
7ab12479 JB |
1924 | } |
1925 | break; | |
1926 | ||
1927 | case UNSHOW_BUFFER: | |
118ea242 | 1928 | if (EQ (w->buffer, obj)) |
7ab12479 | 1929 | { |
118ea242 GM |
1930 | Lisp_Object buffer; |
1931 | struct frame *f = XFRAME (w->frame); | |
1932 | ||
7ab12479 | 1933 | /* Find another buffer to show in this window. */ |
118ea242 | 1934 | buffer = Fother_buffer (obj, Qnil, w->frame); |
118ea242 | 1935 | |
38ab08d1 RS |
1936 | /* If this window is dedicated, and in a frame of its own, |
1937 | kill the frame. */ | |
118ea242 GM |
1938 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1939 | && !NILP (w->dedicated) | |
38ab08d1 | 1940 | && other_visible_frames (f)) |
45945a7b RS |
1941 | { |
1942 | /* Skip the other windows on this frame. | |
1943 | There might be one, the minibuffer! */ | |
118ea242 GM |
1944 | while (CONSP (XCDR (windows)) |
1945 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1946 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1947 | windows = XCDR (windows); | |
1948 | ||
45945a7b | 1949 | /* Now we can safely delete the frame. */ |
118ea242 | 1950 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1951 | } |
38ab08d1 | 1952 | else |
38ab08d1 RS |
1953 | { |
1954 | /* Otherwise show a different buffer in the window. */ | |
118ea242 GM |
1955 | w->dedicated = Qnil; |
1956 | Fset_window_buffer (window, buffer); | |
1957 | if (EQ (window, selected_window)) | |
1958 | Fset_buffer (w->buffer); | |
38ab08d1 | 1959 | } |
7ab12479 JB |
1960 | } |
1961 | break; | |
3f8ab7bd RS |
1962 | |
1963 | /* Check for a window that has a killed buffer. */ | |
1964 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1965 | if (! NILP (w->buffer) |
1966 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1967 | abort (); |
118ea242 | 1968 | break; |
6bbd7a29 GM |
1969 | |
1970 | case WINDOW_LOOP_UNUSED: | |
1971 | break; | |
7ab12479 | 1972 | } |
7ab12479 | 1973 | } |
7ab12479 | 1974 | |
118ea242 | 1975 | UNGCPRO; |
7ab12479 | 1976 | return best_window; |
37962e60 | 1977 | } |
605be8af | 1978 | |
3f8ab7bd RS |
1979 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1980 | ||
233a4a2c | 1981 | void |
3f8ab7bd RS |
1982 | check_all_windows () |
1983 | { | |
1984 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1985 | } | |
1986 | ||
7ab12479 | 1987 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
fdb82f93 PJ |
1988 | doc: /* Return the window least recently selected or used for display. |
1989 | If optional argument FRAME is `visible', search all visible frames. | |
1990 | If FRAME is 0, search all visible and iconified frames. | |
1991 | If FRAME is t, search all frames. | |
1992 | If FRAME is nil, search only the selected frame. | |
1993 | If FRAME is a frame, search only that frame. */) | |
1994 | (frame) | |
1995 | Lisp_Object frame; | |
7ab12479 JB |
1996 | { |
1997 | register Lisp_Object w; | |
1998 | /* First try for a window that is full-width */ | |
89bca612 | 1999 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 2000 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2001 | return w; |
2002 | /* If none of them, try the rest */ | |
89bca612 | 2003 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
2004 | } |
2005 | ||
2006 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
fdb82f93 PJ |
2007 | doc: /* Return the largest window in area. |
2008 | If optional argument FRAME is `visible', search all visible frames. | |
2009 | If FRAME is 0, search all visible and iconified frames. | |
2010 | If FRAME is t, search all frames. | |
2011 | If FRAME is nil, search only the selected frame. | |
2012 | If FRAME is a frame, search only that frame. */) | |
2013 | (frame) | |
2014 | Lisp_Object frame; | |
7ab12479 JB |
2015 | { |
2016 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 2017 | frame); |
7ab12479 JB |
2018 | } |
2019 | ||
2020 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 PJ |
2021 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
2022 | If optional argument FRAME is `visible', search all visible frames. | |
2023 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2024 | If FRAME is t, search all frames. | |
2025 | If FRAME is nil, search only the selected frame. | |
2026 | If FRAME is a frame, search only that frame. */) | |
2027 | (buffer, frame) | |
2028 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2029 | { |
2030 | buffer = Fget_buffer (buffer); | |
017b2bad | 2031 | if (BUFFERP (buffer)) |
44fa5b1e | 2032 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2033 | else |
2034 | return Qnil; | |
2035 | } | |
2036 | ||
2037 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2038 | 0, 1, "", |
2039 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2040 | Only the frame WINDOW is on is affected. | |
2041 | This function tries to reduce display jumps | |
2042 | by keeping the text previously visible in WINDOW | |
2043 | in the same place on the frame. Doing this depends on | |
2044 | the value of (window-start WINDOW), so if calling this function | |
2045 | in a program gives strange scrolling, make sure the window-start | |
2046 | value is reasonable when this function is called. */) | |
2047 | (window) | |
7ab12479 JB |
2048 | Lisp_Object window; |
2049 | { | |
2050 | struct window *w; | |
00d3d838 | 2051 | int startpos; |
85fe3b5e | 2052 | int top, new_top; |
7ab12479 | 2053 | |
265a9e55 | 2054 | if (NILP (window)) |
7ab12479 JB |
2055 | window = selected_window; |
2056 | else | |
b7826503 | 2057 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2058 | w = XWINDOW (window); |
a2b38b3c | 2059 | |
00d3d838 | 2060 | startpos = marker_position (w->start); |
5500c422 | 2061 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2062 | |
a2b38b3c RS |
2063 | if (MINI_WINDOW_P (w) && top > 0) |
2064 | error ("Can't expand minibuffer to full frame"); | |
2065 | ||
70728a80 | 2066 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2067 | |
00d3d838 KH |
2068 | /* Try to minimize scrolling, by setting the window start to the point |
2069 | will cause the text at the old window start to be at the same place | |
2070 | on the frame. But don't try to do this if the window start is | |
2071 | outside the visible portion (as might happen when the display is | |
2072 | not current, due to typeahead). */ | |
85fe3b5e GM |
2073 | new_top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
2074 | if (new_top != top | |
2075 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2076 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2077 | { | |
2078 | struct position pos; | |
2079 | struct buffer *obuf = current_buffer; | |
2080 | ||
2081 | Fset_buffer (w->buffer); | |
2082 | /* This computation used to temporarily move point, but that can | |
2083 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2084 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2085 | |
b73ea88e | 2086 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2087 | w->window_end_valid = Qnil; |
b73ea88e RS |
2088 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2089 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2090 | : Qnil); |
80622eec RS |
2091 | /* We need to do this, so that the window-scroll-functions |
2092 | get called. */ | |
4d047f50 | 2093 | w->optional_new_start = Qt; |
00d3d838 KH |
2094 | |
2095 | set_buffer_internal (obuf); | |
2096 | } | |
5500c422 | 2097 | |
7ab12479 JB |
2098 | return Qnil; |
2099 | } | |
2100 | ||
2101 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2102 | 1, 2, "bDelete windows on (buffer): ", |
2103 | doc: /* Delete all windows showing BUFFER. | |
2104 | Optional second argument FRAME controls which frames are affected. | |
2105 | If optional argument FRAME is `visible', search all visible frames. | |
2106 | If FRAME is 0, search all visible and iconified frames. | |
2107 | If FRAME is nil, search all frames. | |
2108 | If FRAME is t, search only the selected frame. | |
2109 | If FRAME is a frame, search only that frame. */) | |
2110 | (buffer, frame) | |
26f6279d | 2111 | Lisp_Object buffer, frame; |
7ab12479 | 2112 | { |
26f6279d JB |
2113 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2114 | expects. */ | |
c520265e RS |
2115 | if (NILP (frame)) |
2116 | frame = Qt; | |
2117 | else if (EQ (frame, Qt)) | |
2118 | frame = Qnil; | |
26f6279d | 2119 | |
265a9e55 | 2120 | if (!NILP (buffer)) |
7ab12479 JB |
2121 | { |
2122 | buffer = Fget_buffer (buffer); | |
b7826503 | 2123 | CHECK_BUFFER (buffer); |
26f6279d | 2124 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2125 | } |
5500c422 | 2126 | |
7ab12479 JB |
2127 | return Qnil; |
2128 | } | |
2129 | ||
2130 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2131 | Sreplace_buffer_in_windows, |
2132 | 1, 1, "bReplace buffer in windows: ", | |
2133 | doc: /* Replace BUFFER with some other buffer in all windows showing it. */) | |
2134 | (buffer) | |
7ab12479 JB |
2135 | Lisp_Object buffer; |
2136 | { | |
265a9e55 | 2137 | if (!NILP (buffer)) |
7ab12479 JB |
2138 | { |
2139 | buffer = Fget_buffer (buffer); | |
b7826503 | 2140 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2141 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2142 | } | |
2143 | return Qnil; | |
2144 | } | |
ff58478b RS |
2145 | |
2146 | /* Replace BUFFER with some other buffer in all windows | |
2147 | of all frames, even those on other keyboards. */ | |
2148 | ||
2149 | void | |
2150 | replace_buffer_in_all_windows (buffer) | |
2151 | Lisp_Object buffer; | |
2152 | { | |
27abb84f | 2153 | #ifdef MULTI_KBOARD |
ff58478b RS |
2154 | Lisp_Object tail, frame; |
2155 | ||
ff58478b RS |
2156 | /* A single call to window_loop won't do the job |
2157 | because it only considers frames on the current keyboard. | |
2158 | So loop manually over frames, and handle each one. */ | |
2159 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2160 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2161 | #else |
db7f721d | 2162 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2163 | #endif |
2164 | } | |
7ab12479 JB |
2165 | \f |
2166 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2167 | |
2168 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2169 | might crash Emacs. */ | |
5500c422 | 2170 | |
a481b3ea | 2171 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2172 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2173 | |
2174 | /* Make sure that window_min_height and window_min_width are | |
2175 | not too small; if they are, set them to safe minima. */ | |
2176 | ||
2177 | static void | |
2178 | check_min_window_sizes () | |
2179 | { | |
2180 | /* Smaller values might permit a crash. */ | |
2181 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2182 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2183 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2184 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2185 | } | |
2186 | ||
2187 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2188 | minimum allowable size. */ | |
5500c422 | 2189 | |
605be8af | 2190 | void |
a481b3ea | 2191 | check_frame_size (frame, rows, cols) |
605be8af JB |
2192 | FRAME_PTR frame; |
2193 | int *rows, *cols; | |
a481b3ea | 2194 | { |
628df3bf | 2195 | /* For height, we have to see: |
54b8bcb5 RS |
2196 | how many windows the frame has at minimum (one or two), |
2197 | and whether it has a menu bar or other special stuff at the top. */ | |
2198 | int min_height | |
2199 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2200 | ? MIN_SAFE_WINDOW_HEIGHT | |
2201 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
5500c422 GM |
2202 | |
2203 | if (FRAME_TOP_MARGIN (frame) > 0) | |
2204 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2205 | |
2206 | if (*rows < min_height) | |
2207 | *rows = min_height; | |
2208 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2209 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2210 | } | |
2211 | ||
c1636aa6 | 2212 | |
233a4a2c GM |
2213 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2214 | check if W's width can be changed, otherwise check W's height. | |
2215 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2216 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2217 | either. */ | |
c1636aa6 | 2218 | |
233a4a2c GM |
2219 | static int |
2220 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2221 | struct window *w; | |
2222 | int width_p, check_siblings_p; | |
2223 | { | |
2224 | int fixed_p; | |
2225 | struct window *c; | |
2226 | ||
2227 | if (!NILP (w->hchild)) | |
2228 | { | |
2229 | c = XWINDOW (w->hchild); | |
2230 | ||
2231 | if (width_p) | |
2232 | { | |
2233 | /* A horiz. combination is fixed-width if all of if its | |
2234 | children are. */ | |
2235 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2236 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2237 | fixed_p = c == NULL; | |
2238 | } | |
2239 | else | |
2240 | { | |
2241 | /* A horiz. combination is fixed-height if one of if its | |
2242 | children is. */ | |
2243 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2244 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2245 | fixed_p = c != NULL; | |
2246 | } | |
2247 | } | |
2248 | else if (!NILP (w->vchild)) | |
2249 | { | |
2250 | c = XWINDOW (w->vchild); | |
2251 | ||
2252 | if (width_p) | |
2253 | { | |
2254 | /* A vert. combination is fixed-width if one of if its | |
2255 | children is. */ | |
2256 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2257 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2258 | fixed_p = c != NULL; | |
2259 | } | |
2260 | else | |
2261 | { | |
2262 | /* A vert. combination is fixed-height if all of if its | |
2263 | children are. */ | |
2264 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2265 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2266 | fixed_p = c == NULL; | |
2267 | } | |
2268 | } | |
2269 | else if (BUFFERP (w->buffer)) | |
2270 | { | |
a34dfd12 GM |
2271 | if (w->height_fixed_p && !width_p) |
2272 | fixed_p = 1; | |
2273 | else | |
233a4a2c | 2274 | { |
a34dfd12 GM |
2275 | struct buffer *old = current_buffer; |
2276 | Lisp_Object val; | |
2277 | ||
2278 | current_buffer = XBUFFER (w->buffer); | |
2279 | val = find_symbol_value (Qwindow_size_fixed); | |
2280 | current_buffer = old; | |
2281 | ||
2282 | fixed_p = 0; | |
2283 | if (!EQ (val, Qunbound)) | |
2284 | { | |
2285 | fixed_p = !NILP (val); | |
2286 | ||
2287 | if (fixed_p | |
2288 | && ((EQ (val, Qheight) && width_p) | |
2289 | || (EQ (val, Qwidth) && !width_p))) | |
2290 | fixed_p = 0; | |
2291 | } | |
233a4a2c GM |
2292 | } |
2293 | ||
2294 | /* Can't tell if this one is resizable without looking at | |
2295 | siblings. If all siblings are fixed-size this one is too. */ | |
2296 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2297 | { | |
2298 | Lisp_Object child; | |
2299 | ||
2300 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2301 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2302 | break; | |
2303 | ||
2304 | if (NILP (child)) | |
2305 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2306 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2307 | break; | |
2308 | ||
2309 | if (NILP (child)) | |
2310 | fixed_p = 1; | |
2311 | } | |
2312 | } | |
2313 | else | |
2314 | fixed_p = 1; | |
2315 | ||
2316 | return fixed_p; | |
2317 | } | |
2318 | ||
2319 | ||
2320 | /* Return the minimum size of window W, not taking fixed-width windows | |
2321 | into account. WIDTH_P non-zero means return the minimum width, | |
2322 | otherwise return the minimum height. If W is a combination window, | |
2323 | compute the minimum size from the minimum sizes of W's children. */ | |
2324 | ||
2325 | static int | |
2326 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2327 | struct window *w; |
2328 | int width_p; | |
2329 | { | |
233a4a2c | 2330 | struct window *c; |
c1636aa6 GM |
2331 | int size; |
2332 | ||
233a4a2c GM |
2333 | if (!NILP (w->hchild)) |
2334 | { | |
2335 | c = XWINDOW (w->hchild); | |
2336 | size = 0; | |
2337 | ||
2338 | if (width_p) | |
2339 | { | |
2340 | /* The min width of a horizontal combination is | |
2341 | the sum of the min widths of its children. */ | |
2342 | while (c) | |
2343 | { | |
2344 | size += window_min_size_1 (c, width_p); | |
2345 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2346 | } | |
2347 | } | |
2348 | else | |
2349 | { | |
2350 | /* The min height a horizontal combination equals | |
2351 | the maximum of all min height of its children. */ | |
2352 | while (c) | |
2353 | { | |
2354 | int min_size = window_min_size_1 (c, width_p); | |
2355 | size = max (min_size, size); | |
2356 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2357 | } | |
2358 | } | |
2359 | } | |
2360 | else if (!NILP (w->vchild)) | |
2361 | { | |
2362 | c = XWINDOW (w->vchild); | |
2363 | size = 0; | |
2364 | ||
2365 | if (width_p) | |
2366 | { | |
2367 | /* The min width of a vertical combination is | |
2368 | the maximum of the min widths of its children. */ | |
2369 | while (c) | |
2370 | { | |
2371 | int min_size = window_min_size_1 (c, width_p); | |
2372 | size = max (min_size, size); | |
2373 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2374 | } | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | /* The min height of a vertical combination equals | |
2379 | the sum of the min height of its children. */ | |
2380 | while (c) | |
2381 | { | |
2382 | size += window_min_size_1 (c, width_p); | |
2383 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2384 | } | |
2385 | } | |
2386 | } | |
c1636aa6 GM |
2387 | else |
2388 | { | |
233a4a2c GM |
2389 | if (width_p) |
2390 | size = window_min_width; | |
c1636aa6 | 2391 | else |
233a4a2c GM |
2392 | { |
2393 | if (MINI_WINDOW_P (w) | |
2394 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2395 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2396 | size = 1; |
2397 | else | |
2398 | size = window_min_height; | |
2399 | } | |
c1636aa6 GM |
2400 | } |
2401 | ||
2402 | return size; | |
2403 | } | |
2404 | ||
2405 | ||
233a4a2c GM |
2406 | /* Return the minimum size of window W, taking fixed-size windows into |
2407 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2408 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2409 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2410 | unless FIXED is null. */ | |
7ab12479 | 2411 | |
233a4a2c | 2412 | static int |
f984d4fc | 2413 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2414 | struct window *w; |
f984d4fc | 2415 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2416 | { |
2417 | int size, fixed_p; | |
2418 | ||
f984d4fc GM |
2419 | if (ignore_fixed_p) |
2420 | fixed_p = 0; | |
2421 | else | |
2422 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2423 | ||
233a4a2c GM |
2424 | if (fixed) |
2425 | *fixed = fixed_p; | |
2426 | ||
2427 | if (fixed_p) | |
2428 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2429 | else | |
2430 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2431 | |
233a4a2c GM |
2432 | return size; |
2433 | } | |
2434 | ||
2435 | ||
2436 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2437 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2438 | keep their proportionate size relative to WINDOW. Propagate | |
2439 | WINDOW's top or left edge position to children. Delete windows | |
192c3131 RS |
2440 | that become too small unless NODELETE_P is non-zero. |
2441 | ||
2442 | If NODELETE_P is 2, that means we do delete windows that are | |
2443 | too small, even if they were too small before! */ | |
233a4a2c GM |
2444 | |
2445 | static void | |
2446 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2447 | Lisp_Object window; |
233a4a2c | 2448 | int size, width_p, nodelete_p; |
7ab12479 | 2449 | { |
233a4a2c GM |
2450 | struct window *w = XWINDOW (window); |
2451 | struct window *c; | |
2452 | Lisp_Object child, *forward, *sideward; | |
2453 | int old_size, min_size; | |
7ab12479 | 2454 | |
192c3131 RS |
2455 | if (nodelete_p == 2) |
2456 | nodelete_p = 0; | |
2457 | ||
a481b3ea | 2458 | check_min_window_sizes (); |
7ae2f10f | 2459 | size = max (0, size); |
233a4a2c | 2460 | |
b5f05b50 GM |
2461 | /* If the window has been "too small" at one point, |
2462 | don't delete it for being "too small" in the future. | |
2463 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2464 | if (width_p) |
2465 | { | |
8b6d9dc9 | 2466 | old_size = XINT (w->width); |
233a4a2c GM |
2467 | min_size = window_min_width; |
2468 | } | |
2469 | else | |
2470 | { | |
8b6d9dc9 | 2471 | old_size = XINT (w->height); |
233a4a2c GM |
2472 | min_size = window_min_height; |
2473 | } | |
192c3131 RS |
2474 | |
2475 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
2476 | w->too_small_ok = Qt; |
2477 | ||
233a4a2c | 2478 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 2479 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 2480 | { |
b5f05b50 | 2481 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2482 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2483 | else |
233a4a2c | 2484 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2485 | |
233a4a2c | 2486 | if (size < min_size) |
c1636aa6 GM |
2487 | { |
2488 | delete_window (window); | |
2489 | return; | |
2490 | } | |
7ab12479 JB |
2491 | } |
2492 | ||
233a4a2c | 2493 | /* Set redisplay hints. */ |
7ae2f10f GM |
2494 | w->last_modified = make_number (0); |
2495 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2496 | windows_or_buffers_changed++; |
7ae2f10f | 2497 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2498 | |
233a4a2c GM |
2499 | if (width_p) |
2500 | { | |
2501 | sideward = &w->vchild; | |
2502 | forward = &w->hchild; | |
7ae2f10f | 2503 | w->width = make_number (size); |
233a4a2c GM |
2504 | } |
2505 | else | |
2506 | { | |
2507 | sideward = &w->hchild; | |
2508 | forward = &w->vchild; | |
7ae2f10f | 2509 | w->height = make_number (size); |
0130fe1a | 2510 | w->orig_height = Qnil; |
233a4a2c GM |
2511 | } |
2512 | ||
2513 | if (!NILP (*sideward)) | |
7ab12479 | 2514 | { |
233a4a2c | 2515 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2516 | { |
233a4a2c GM |
2517 | c = XWINDOW (child); |
2518 | if (width_p) | |
2519 | c->left = w->left; | |
2520 | else | |
2521 | c->top = w->top; | |
2522 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2523 | } |
2524 | } | |
233a4a2c | 2525 | else if (!NILP (*forward)) |
7ab12479 | 2526 | { |
233a4a2c GM |
2527 | int fixed_size, each, extra, n; |
2528 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2529 | int last_pos, first_pos, nchildren, total; |
233a4a2c GM |
2530 | |
2531 | /* Determine the fixed-size portion of the this window, and the | |
2532 | number of child windows. */ | |
8b6d9dc9 | 2533 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2534 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2535 | { |
8b6d9dc9 GM |
2536 | int child_size; |
2537 | ||
7ab12479 | 2538 | c = XWINDOW (child); |
8b6d9dc9 GM |
2539 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
2540 | total += child_size; | |
2541 | ||
233a4a2c GM |
2542 | if (window_fixed_size_p (c, width_p, 0)) |
2543 | { | |
8b6d9dc9 | 2544 | fixed_size += child_size; |
233a4a2c GM |
2545 | ++nfixed; |
2546 | } | |
2547 | } | |
7ab12479 | 2548 | |
233a4a2c GM |
2549 | /* If the new size is smaller than fixed_size, or if there |
2550 | aren't any resizable windows, allow resizing fixed-size | |
2551 | windows. */ | |
2552 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2553 | ||
2554 | /* Compute how many lines/columns to add to each child. The | |
2555 | value of extra takes care of rounding errors. */ | |
2556 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
8b6d9dc9 GM |
2557 | each = (size - total) / n; |
2558 | extra = (size - total) - n * each; | |
233a4a2c GM |
2559 | |
2560 | /* Compute new children heights and edge positions. */ | |
8b6d9dc9 | 2561 | first_pos = width_p ? XINT (w->left) : XINT (w->top); |
233a4a2c GM |
2562 | last_pos = first_pos; |
2563 | for (child = *forward; !NILP (child); child = c->next) | |
2564 | { | |
2565 | int new_size, old_size; | |
2566 | ||
2567 | c = XWINDOW (child); | |
2568 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2569 | new_size = old_size; | |
7ab12479 | 2570 | |
233a4a2c GM |
2571 | /* The top or left edge position of this child equals the |
2572 | bottom or right edge of its predecessor. */ | |
2573 | if (width_p) | |
2574 | c->left = make_number (last_pos); | |
2575 | else | |
2576 | c->top = make_number (last_pos); | |
7ab12479 | 2577 | |
233a4a2c GM |
2578 | /* If this child can be resized, do it. */ |
2579 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2580 | { | |
2581 | new_size = old_size + each + extra; | |
2582 | extra = 0; | |
2583 | } | |
2584 | ||
2585 | /* Set new height. Note that size_window also propagates | |
2586 | edge positions to children, so it's not a no-op if we | |
2587 | didn't change the child's size. */ | |
2588 | size_window (child, new_size, width_p, 1); | |
2589 | ||
2590 | /* Remember the bottom/right edge position of this child; it | |
2591 | will be used to set the top/left edge of the next child. */ | |
2592 | last_pos += new_size; | |
7ab12479 | 2593 | } |
233a4a2c GM |
2594 | |
2595 | /* We should have covered the parent exactly with child windows. */ | |
2596 | xassert (size == last_pos - first_pos); | |
2597 | ||
7ab12479 | 2598 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2599 | if (!nodelete_p) |
2600 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2601 | { |
233a4a2c GM |
2602 | int child_size; |
2603 | c = XWINDOW (child); | |
8b6d9dc9 | 2604 | child_size = width_p ? XINT (c->width) : XINT (c->height); |
192c3131 | 2605 | size_window (child, child_size, width_p, 2); |
7ab12479 JB |
2606 | } |
2607 | } | |
2608 | } | |
2609 | ||
233a4a2c GM |
2610 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2611 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2612 | that become too small in the process. (The caller should check | |
2613 | later and do so if appropriate.) */ | |
7ab12479 | 2614 | |
5e14b1fc | 2615 | void |
233a4a2c | 2616 | set_window_height (window, height, nodelete) |
7ab12479 | 2617 | Lisp_Object window; |
233a4a2c | 2618 | int height; |
7ab12479 JB |
2619 | int nodelete; |
2620 | { | |
233a4a2c GM |
2621 | size_window (window, height, 0, nodelete); |
2622 | } | |
7ab12479 | 2623 | |
7ab12479 | 2624 | |
233a4a2c GM |
2625 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2626 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2627 | that become too small in the process. (The caller should check | |
2628 | later and do so if appropriate.) */ | |
7ab12479 | 2629 | |
233a4a2c GM |
2630 | void |
2631 | set_window_width (window, width, nodelete) | |
2632 | Lisp_Object window; | |
2633 | int width; | |
2634 | int nodelete; | |
2635 | { | |
2636 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2637 | } |
233a4a2c | 2638 | |
7ab12479 | 2639 | \f |
1d8d96fa | 2640 | int window_select_count; |
7ab12479 | 2641 | |
5b03d3c0 RS |
2642 | Lisp_Object |
2643 | Fset_window_buffer_unwind (obuf) | |
2644 | Lisp_Object obuf; | |
2645 | { | |
2646 | Fset_buffer (obuf); | |
2647 | return Qnil; | |
2648 | } | |
2649 | ||
7ab12479 | 2650 | |
5500c422 GM |
2651 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2652 | means it's allowed to run hooks. See make_frame for a case where | |
2653 | it's not allowed. */ | |
7ab12479 | 2654 | |
5500c422 GM |
2655 | void |
2656 | set_window_buffer (window, buffer, run_hooks_p) | |
2657 | Lisp_Object window, buffer; | |
2658 | int run_hooks_p; | |
2659 | { | |
2660 | struct window *w = XWINDOW (window); | |
2661 | struct buffer *b = XBUFFER (buffer); | |
2662 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2663 | |
2664 | w->buffer = buffer; | |
86e48436 RS |
2665 | |
2666 | if (EQ (window, selected_window)) | |
5500c422 | 2667 | b->last_selected_window = window; |
beb4e312 RS |
2668 | |
2669 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2670 | if (INTEGERP (b->display_count)) |
2671 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2672 | b->display_time = Fcurrent_time (); | |
86e48436 | 2673 | |
d834a2e9 | 2674 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2675 | XSETFASTINT (w->window_end_vpos, 0); |
2676 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2677 | w->window_end_valid = Qnil; |
1c686c99 | 2678 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 2679 | w->vscroll = 0; |
5500c422 | 2680 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2681 | set_marker_restricted (w->start, |
5500c422 | 2682 | make_number (b->last_window_start), |
7ab12479 JB |
2683 | buffer); |
2684 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2685 | w->force_start = Qnil; |
d834a2e9 | 2686 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2687 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2688 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2689 | |
2690 | /* We must select BUFFER for running the window-scroll-functions. | |
2691 | If WINDOW is selected, switch permanently. | |
2692 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2693 | if (EQ (window, selected_window)) |
2694 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2695 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2696 | because that might itself be a local variable. */ | |
2697 | else if (window_initialized) | |
2698 | { | |
2699 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2700 | Fset_buffer (buffer); | |
2701 | } | |
2702 | ||
5500c422 | 2703 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2704 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2705 | |
5500c422 GM |
2706 | if (run_hooks_p) |
2707 | { | |
2708 | if (! NILP (Vwindow_scroll_functions)) | |
2709 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2710 | Fmarker_position (w->start)); | |
2711 | ||
2712 | if (! NILP (Vwindow_configuration_change_hook) | |
2713 | && ! NILP (Vrun_hooks)) | |
2714 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2715 | } | |
543f5fb1 | 2716 | |
5b03d3c0 | 2717 | unbind_to (count, Qnil); |
5500c422 | 2718 | } |
5b03d3c0 | 2719 | |
5500c422 GM |
2720 | |
2721 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
fdb82f93 PJ |
2722 | doc: /* Make WINDOW display BUFFER as its contents. |
2723 | BUFFER can be a buffer or buffer name. */) | |
2724 | (window, buffer) | |
5500c422 GM |
2725 | register Lisp_Object window, buffer; |
2726 | { | |
2727 | register Lisp_Object tem; | |
2728 | register struct window *w = decode_window (window); | |
5500c422 | 2729 | |
bed0c171 | 2730 | XSETWINDOW (window, w); |
5500c422 | 2731 | buffer = Fget_buffer (buffer); |
b7826503 | 2732 | CHECK_BUFFER (buffer); |
5500c422 GM |
2733 | |
2734 | if (NILP (XBUFFER (buffer)->name)) | |
2735 | error ("Attempt to display deleted buffer"); | |
2736 | ||
2737 | tem = w->buffer; | |
2738 | if (NILP (tem)) | |
2739 | error ("Window is deleted"); | |
2740 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2741 | is first being set up. */ | |
2742 | { | |
2743 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2744 | error ("Window is dedicated to `%s'", | |
2745 | XSTRING (XBUFFER (tem)->name)->data); | |
2746 | ||
2747 | unshow_buffer (w); | |
2748 | } | |
2749 | ||
2750 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2751 | return Qnil; |
2752 | } | |
2753 | ||
2754 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
fdb82f93 PJ |
2755 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
2756 | If WINDOW is not already selected, also make WINDOW's buffer current. | |
2757 | Note that the main editor command loop | |
2758 | selects the buffer of the selected window before each command. */) | |
2759 | (window) | |
7ab12479 | 2760 | register Lisp_Object window; |
b7354ddf RS |
2761 | { |
2762 | return select_window_1 (window, 1); | |
2763 | } | |
2764 | \f | |
719eaeb1 GM |
2765 | /* Note that selected_window can be nil |
2766 | when this is called from Fset_window_configuration. */ | |
2767 | ||
b7354ddf RS |
2768 | static Lisp_Object |
2769 | select_window_1 (window, recordflag) | |
2770 | register Lisp_Object window; | |
2771 | int recordflag; | |
7ab12479 JB |
2772 | { |
2773 | register struct window *w; | |
719eaeb1 | 2774 | register struct window *ow; |
1ae1a37d | 2775 | struct frame *sf; |
7ab12479 | 2776 | |
b7826503 | 2777 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
2778 | |
2779 | w = XWINDOW (window); | |
50e88778 | 2780 | w->frozen_window_start_p = 0; |
7ab12479 | 2781 | |
d834a2e9 | 2782 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2783 | if (EQ (window, selected_window)) |
2784 | return window; | |
2785 | ||
719eaeb1 GM |
2786 | if (!NILP (selected_window)) |
2787 | { | |
2788 | ow = XWINDOW (selected_window); | |
2789 | if (! NILP (ow->buffer)) | |
2790 | set_marker_both (ow->pointm, ow->buffer, | |
2791 | BUF_PT (XBUFFER (ow->buffer)), | |
2792 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2793 | } | |
7ab12479 JB |
2794 | |
2795 | selected_window = window; | |
1ae1a37d GM |
2796 | sf = SELECTED_FRAME (); |
2797 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2798 | { |
44fa5b1e | 2799 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2800 | /* Use this rather than Fhandle_switch_frame |
2801 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2802 | move around in the state where a minibuffer in a separate | |
2803 | frame is active. */ | |
2804 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2805 | } |
2806 | else | |
1ae1a37d | 2807 | sf->selected_window = window; |
7ab12479 | 2808 | |
b7354ddf RS |
2809 | if (recordflag) |
2810 | record_buffer (w->buffer); | |
7ab12479 JB |
2811 | Fset_buffer (w->buffer); |
2812 | ||
86e48436 RS |
2813 | XBUFFER (w->buffer)->last_selected_window = window; |
2814 | ||
7ab12479 JB |
2815 | /* Go to the point recorded in the window. |
2816 | This is important when the buffer is in more | |
2817 | than one window. It also matters when | |
2818 | redisplay_window has altered point after scrolling, | |
2819 | because it makes the change only in the window. */ | |
2820 | { | |
2821 | register int new_point = marker_position (w->pointm); | |
2822 | if (new_point < BEGV) | |
2823 | SET_PT (BEGV); | |
a9c95e08 | 2824 | else if (new_point > ZV) |
7ab12479 JB |
2825 | SET_PT (ZV); |
2826 | else | |
2827 | SET_PT (new_point); | |
2828 | } | |
2829 | ||
2830 | windows_or_buffers_changed++; | |
2831 | return window; | |
2832 | } | |
b7354ddf | 2833 | \f |
441a127e RS |
2834 | /* Deiconify the frame containing the window WINDOW, |
2835 | unless it is the selected frame; | |
2836 | then return WINDOW. | |
2837 | ||
2838 | The reason for the exception for the selected frame | |
2839 | is that it seems better not to change the selected frames visibility | |
2840 | merely because of displaying a different buffer in it. | |
2841 | The deiconification is useful when a buffer gets shown in | |
2842 | another frame that you were not using lately. */ | |
d07f802a RS |
2843 | |
2844 | static Lisp_Object | |
2845 | display_buffer_1 (window) | |
2846 | Lisp_Object window; | |
2847 | { | |
1ae1a37d GM |
2848 | Lisp_Object frame = XWINDOW (window)->frame; |
2849 | FRAME_PTR f = XFRAME (frame); | |
2850 | ||
d07f802a | 2851 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2852 | |
2853 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2854 | { |
2855 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2856 | Fmake_frame_visible (frame); |
37962e60 | 2857 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2858 | Fraise_frame (frame); |
60117126 | 2859 | } |
1ae1a37d | 2860 | |
d07f802a RS |
2861 | return window; |
2862 | } | |
2863 | ||
4628f7a4 | 2864 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
fdb82f93 PJ |
2865 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would be created specially. |
2866 | The value is actually t if the frame should be called with default frame | |
2867 | parameters, and a list of frame parameters if they were specified. | |
2868 | See `special-display-buffer-names', and `special-display-regexps'. */) | |
2869 | (buffer_name) | |
4628f7a4 EN |
2870 | Lisp_Object buffer_name; |
2871 | { | |
2872 | Lisp_Object tem; | |
2873 | ||
b7826503 | 2874 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2875 | |
2876 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2877 | if (!NILP (tem)) | |
2878 | return Qt; | |
2879 | ||
2880 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2881 | if (!NILP (tem)) | |
2882 | return XCDR (tem); | |
2883 | ||
2884 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2885 | { | |
2886 | Lisp_Object car = XCAR (tem); | |
2887 | if (STRINGP (car) | |
2888 | && fast_string_match (car, buffer_name) >= 0) | |
2889 | return Qt; | |
2890 | else if (CONSP (car) | |
2891 | && STRINGP (XCAR (car)) | |
2892 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2893 | return XCDR (car); |
4628f7a4 EN |
2894 | } |
2895 | return Qnil; | |
2896 | } | |
2897 | ||
2898 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
fdb82f93 PJ |
2899 | doc: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window. |
2900 | See `same-window-buffer-names' and `same-window-regexps'. */) | |
2901 | (buffer_name) | |
4628f7a4 EN |
2902 | Lisp_Object buffer_name; |
2903 | { | |
2904 | Lisp_Object tem; | |
2905 | ||
b7826503 | 2906 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2907 | |
2908 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2909 | if (!NILP (tem)) | |
2910 | return Qt; | |
2911 | ||
2912 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2913 | if (!NILP (tem)) | |
2914 | return Qt; | |
2915 | ||
2916 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2917 | { | |
2918 | Lisp_Object car = XCAR (tem); | |
2919 | if (STRINGP (car) | |
2920 | && fast_string_match (car, buffer_name) >= 0) | |
2921 | return Qt; | |
2922 | else if (CONSP (car) | |
2923 | && STRINGP (XCAR (car)) | |
2924 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2925 | return Qt; | |
2926 | } | |
2927 | return Qnil; | |
2928 | } | |
2929 | ||
fdb82f93 | 2930 | /* Use B so the default is (other-buffer). */ |
53f76081 | 2931 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
2932 | "BDisplay buffer: \nP", |
2933 | doc: /* Make BUFFER appear in some window but don't select it. | |
2934 | BUFFER can be a buffer or a buffer name. | |
2935 | If BUFFER is shown already in some window, just use that one, | |
2936 | unless the window is the selected window and the optional second | |
2937 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
2938 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
2939 | Returns the window displaying BUFFER. | |
079d288f | 2940 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
2941 | displaying BUFFER, then simply raise that frame. |
2942 | ||
2943 | The variables `special-display-buffer-names', `special-display-regexps', | |
2944 | `same-window-buffer-names', and `same-window-regexps' customize how certain | |
2945 | buffer names are handled. | |
2946 | ||
2947 | If optional argument FRAME is `visible', search all visible frames. | |
2948 | If FRAME is 0, search all visible and iconified frames. | |
2949 | If FRAME is t, search all frames. | |
2950 | If FRAME is a frame, search only that frame. | |
2951 | If FRAME is nil, search only the selected frame | |
2952 | (actually the last nonminibuffer frame), | |
2953 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
2954 | which means search visible and iconified frames. | |
2955 | ||
2956 | If `even-window-heights' is non-nil, window heights will be evened out | |
2957 | if displaying the buffer causes two vertically adjacent windows to be | |
2958 | displayed. */) | |
2959 | (buffer, not_this_window, frame) | |
53f76081 | 2960 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 2961 | { |
aee631c2 | 2962 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2963 | struct frame *f; |
7ab12479 | 2964 | |
aee631c2 | 2965 | swp = Qnil; |
7ab12479 | 2966 | buffer = Fget_buffer (buffer); |
b7826503 | 2967 | CHECK_BUFFER (buffer); |
7ab12479 | 2968 | |
265a9e55 | 2969 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2970 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2971 | ||
265a9e55 | 2972 | if (NILP (not_this_window) |
7ab12479 | 2973 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2974 | return display_buffer_1 (selected_window); |
7ab12479 | 2975 | |
855d8627 RS |
2976 | /* See if the user has specified this buffer should appear |
2977 | in the selected window. */ | |
2978 | if (NILP (not_this_window)) | |
2979 | { | |
aee631c2 RS |
2980 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2981 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2982 | { |
2983 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2984 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2985 | } |
855d8627 RS |
2986 | } |
2987 | ||
079d288f | 2988 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
2989 | look for a window showing BUFFER on any visible or iconified frame. |
2990 | Otherwise search only the current frame. */ | |
53f76081 RS |
2991 | if (! NILP (frame)) |
2992 | tem = frame; | |
9c3da604 GM |
2993 | else if (pop_up_frames |
2994 | || display_buffer_reuse_frames | |
2995 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2996 | XSETFASTINT (tem, 0); |
2997 | else | |
73dc5198 | 2998 | XSETFRAME (tem, last_nonminibuf_frame); |
9c3da604 | 2999 | |
73dc5198 | 3000 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3001 | if (!NILP (window) |
3002 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3003 | return display_buffer_1 (window); |
7ab12479 | 3004 | |
a90712c2 | 3005 | /* Certain buffer names get special handling. */ |
aee631c2 | 3006 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3007 | { |
4628f7a4 EN |
3008 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3009 | if (EQ (tem, Qt)) | |
a90712c2 | 3010 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3011 | if (CONSP (tem)) |
3012 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3013 | } |
3014 | ||
44fa5b1e JB |
3015 | /* If there are no frames open that have more than a minibuffer, |
3016 | we need to create a new frame. */ | |
3017 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3018 | { |
a90712c2 | 3019 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 3020 | Fset_window_buffer (window, buffer); |
d07f802a | 3021 | return display_buffer_1 (window); |
7ab12479 | 3022 | } |
7ab12479 | 3023 | |
1ae1a37d | 3024 | f = SELECTED_FRAME (); |
43bad991 | 3025 | if (pop_up_windows |
1ae1a37d | 3026 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3027 | /* If the current frame is a special display frame, |
3028 | don't try to reuse its windows. */ | |
1ae1a37d | 3029 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3030 | { |
12cae7c0 KH |
3031 | Lisp_Object frames; |
3032 | ||
37962e60 | 3033 | frames = Qnil; |
1ae1a37d | 3034 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3035 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
3036 | /* Don't try to create a window if would get an error */ |
3037 | if (split_height_threshold < window_min_height << 1) | |
3038 | split_height_threshold = window_min_height << 1; | |
3039 | ||
cee67da9 RS |
3040 | /* Note that both Fget_largest_window and Fget_lru_window |
3041 | ignore minibuffers and dedicated windows. | |
3042 | This means they can return nil. */ | |
7ab12479 | 3043 | |
cee67da9 RS |
3044 | /* If the frame we would try to split cannot be split, |
3045 | try other frames. */ | |
1ae1a37d | 3046 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3047 | { |
3048 | /* Try visible frames first. */ | |
3049 | window = Fget_largest_window (Qvisible); | |
3050 | /* If that didn't work, try iconified frames. */ | |
3051 | if (NILP (window)) | |
3052 | window = Fget_largest_window (make_number (0)); | |
3053 | if (NILP (window)) | |
3054 | window = Fget_largest_window (Qt); | |
3055 | } | |
3056 | else | |
3057 | window = Fget_largest_window (frames); | |
3058 | ||
92cca945 RS |
3059 | /* If we got a tall enough full-width window that can be split, |
3060 | split it. */ | |
265a9e55 | 3061 | if (!NILP (window) |
92cca945 | 3062 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3063 | && window_height (window) >= split_height_threshold |
111e5992 | 3064 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3065 | window = Fsplit_window (window, Qnil, Qnil); |
3066 | else | |
3067 | { | |
1942f68f RS |
3068 | Lisp_Object upper, lower, other; |
3069 | ||
44fa5b1e | 3070 | window = Fget_lru_window (frames); |
92cca945 RS |
3071 | /* If the LRU window is selected, and big enough, |
3072 | and can be split, split it. */ | |
cee67da9 | 3073 | if (!NILP (window) |
92cca945 | 3074 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3075 | && (EQ (window, selected_window) |
3076 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3077 | && window_height (window) >= window_min_height << 1) |
3078 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3079 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3080 | |
cee67da9 | 3081 | /* Try visible frames first. */ |
48d9379d RS |
3082 | if (NILP (window)) |
3083 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3084 | if (NILP (window)) |
3085 | window = Fget_largest_window (Qvisible); | |
3086 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3087 | if (NILP (window)) |
3088 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3089 | if (NILP (window)) |
3090 | window = Fget_largest_window (make_number (0)); | |
3091 | /* Try invisible frames. */ | |
48d9379d RS |
3092 | if (NILP (window)) |
3093 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3094 | if (NILP (window)) |
3095 | window = Fget_largest_window (Qt); | |
3096 | /* As a last resort, make a new frame. */ | |
3097 | if (NILP (window)) | |
3098 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3099 | /* If window appears above or below another, |
3100 | even out their heights. */ | |
cac66e4f | 3101 | other = upper = lower = Qnil; |
1942f68f RS |
3102 | if (!NILP (XWINDOW (window)->prev)) |
3103 | other = upper = XWINDOW (window)->prev, lower = window; | |
3104 | if (!NILP (XWINDOW (window)->next)) | |
3105 | other = lower = XWINDOW (window)->next, upper = window; | |
3106 | if (!NILP (other) | |
6529ed87 | 3107 | && !NILP (Veven_window_heights) |
1942f68f | 3108 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
296b535c KH |
3109 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
3110 | && (XFASTINT (XWINDOW (other)->height) | |
3111 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 3112 | { |
296b535c KH |
3113 | int total = (XFASTINT (XWINDOW (other)->height) |
3114 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
3115 | enlarge_window (upper, |
3116 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f95284d2 | 3117 | 0, 0); |
1942f68f | 3118 | } |
7ab12479 JB |
3119 | } |
3120 | } | |
3121 | else | |
3122 | window = Fget_lru_window (Qnil); | |
3123 | ||
3124 | Fset_window_buffer (window, buffer); | |
d07f802a | 3125 | return display_buffer_1 (window); |
7ab12479 JB |
3126 | } |
3127 | ||
3128 | void | |
3129 | temp_output_buffer_show (buf) | |
3130 | register Lisp_Object buf; | |
3131 | { | |
3132 | register struct buffer *old = current_buffer; | |
3133 | register Lisp_Object window; | |
3134 | register struct window *w; | |
3135 | ||
bccd3dd1 RS |
3136 | XBUFFER (buf)->directory = current_buffer->directory; |
3137 | ||
7ab12479 | 3138 | Fset_buffer (buf); |
c6367666 | 3139 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3140 | BEGV = BEG; |
3141 | ZV = Z; | |
3142 | SET_PT (BEG); | |
b1599b4c | 3143 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
3144 | set_buffer_internal (old); |
3145 | ||
3146 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3147 | call1 (Vtemp_buffer_show_function, buf); | |
3148 | else | |
3149 | { | |
53f76081 | 3150 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3151 | |
1ae1a37d | 3152 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3153 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3154 | Vminibuf_scroll_window = window; |
3155 | w = XWINDOW (window); | |
d834a2e9 | 3156 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3157 | XSETFASTINT (w->min_hscroll, 0); |
b73ea88e RS |
3158 | set_marker_restricted_both (w->start, buf, 1, 1); |
3159 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3160 | |
beb4e312 RS |
3161 | /* Run temp-buffer-show-hook, with the chosen window selected |
3162 | and it sbuffer current. */ | |
f52cca03 | 3163 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3164 | { |
f52cca03 RS |
3165 | Lisp_Object tem; |
3166 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3167 | if (!NILP (tem)) |
3168 | { | |
f52cca03 RS |
3169 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3170 | if (!NILP (tem)) | |
3171 | { | |
3172 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
3173 | Lisp_Object prev_window; |
3174 | prev_window = selected_window; | |
2cccc823 | 3175 | |
f52cca03 | 3176 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 3177 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 3178 | select_window_1 (window, 0); |
beb4e312 | 3179 | Fset_buffer (w->buffer); |
f52cca03 | 3180 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 3181 | select_window_1 (prev_window, 0); |
f52cca03 RS |
3182 | unbind_to (count, Qnil); |
3183 | } | |
2cccc823 RS |
3184 | } |
3185 | } | |
3186 | } | |
7ab12479 JB |
3187 | } |
3188 | \f | |
dfcf069d | 3189 | static void |
7ab12479 JB |
3190 | make_dummy_parent (window) |
3191 | Lisp_Object window; | |
3192 | { | |
cffec418 | 3193 | Lisp_Object new; |
7ab12479 | 3194 | register struct window *o, *p; |
cffec418 | 3195 | int i; |
7ab12479 | 3196 | |
cffec418 | 3197 | o = XWINDOW (window); |
26605be9 | 3198 | p = allocate_window (); |
cffec418 | 3199 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3200 | ((struct Lisp_Vector *) p)->contents[i] |
3201 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3202 | XSETWINDOW (new, p); |
7ab12479 | 3203 | |
d834a2e9 | 3204 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3205 | |
3206 | /* Put new into window structure in place of window */ | |
3207 | replace_window (window, new); | |
3208 | ||
3209 | o->next = Qnil; | |
3210 | o->prev = Qnil; | |
3211 | o->vchild = Qnil; | |
3212 | o->hchild = Qnil; | |
3213 | o->parent = new; | |
3214 | ||
3215 | p->start = Qnil; | |
3216 | p->pointm = Qnil; | |
3217 | p->buffer = Qnil; | |
3218 | } | |
3219 | ||
3220 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3221 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3222 | WINDOW defaults to selected one and SIZE to half its size. | |
3223 | If optional third arg HORFLAG is non-nil, split side by side | |
3224 | and put SIZE columns in the first of the pair. In that case, | |
3225 | SIZE includes that window's scroll bar, or the divider column to its right. */) | |
3226 | (window, size, horflag) | |
77ae0fe3 | 3227 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3228 | { |
3229 | register Lisp_Object new; | |
3230 | register struct window *o, *p; | |
c0807608 | 3231 | FRAME_PTR fo; |
77ae0fe3 | 3232 | register int size_int; |
7ab12479 | 3233 | |
265a9e55 | 3234 | if (NILP (window)) |
7ab12479 JB |
3235 | window = selected_window; |
3236 | else | |
b7826503 | 3237 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3238 | |
3239 | o = XWINDOW (window); | |
c0807608 | 3240 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3241 | |
77ae0fe3 | 3242 | if (NILP (size)) |
7ab12479 | 3243 | { |
265a9e55 | 3244 | if (!NILP (horflag)) |
c0807608 | 3245 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3246 | the usable space in columns by two. |
3247 | We round up, since the left-hand window may include | |
3248 | a dividing line, while the right-hand may not. */ | |
3249 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3250 | else |
77ae0fe3 | 3251 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3252 | } |
3253 | else | |
3254 | { | |
b7826503 | 3255 | CHECK_NUMBER (size); |
77ae0fe3 | 3256 | size_int = XINT (size); |
7ab12479 JB |
3257 | } |
3258 | ||
3259 | if (MINI_WINDOW_P (o)) | |
3260 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3261 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3262 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3263 | |
a481b3ea | 3264 | check_min_window_sizes (); |
7ab12479 | 3265 | |
265a9e55 | 3266 | if (NILP (horflag)) |
7ab12479 | 3267 | { |
77ae0fe3 KH |
3268 | if (size_int < window_min_height) |
3269 | error ("Window height %d too small (after splitting)", size_int); | |
3270 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3271 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3272 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3273 | if (NILP (o->parent) |
3274 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3275 | { |
3276 | make_dummy_parent (window); | |
3277 | new = o->parent; | |
3278 | XWINDOW (new)->vchild = window; | |
3279 | } | |
3280 | } | |
3281 | else | |
3282 | { | |
77ae0fe3 KH |
3283 | if (size_int < window_min_width) |
3284 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3285 | |
3286 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3287 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3288 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3289 | if (NILP (o->parent) |
3290 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3291 | { |
3292 | make_dummy_parent (window); | |
3293 | new = o->parent; | |
3294 | XWINDOW (new)->hchild = window; | |
3295 | } | |
3296 | } | |
3297 | ||
3298 | /* Now we know that window's parent is a vertical combination | |
3299 | if we are dividing vertically, or a horizontal combination | |
3300 | if we are making side-by-side windows */ | |
3301 | ||
3302 | windows_or_buffers_changed++; | |
c0807608 | 3303 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3304 | new = make_window (); |
3305 | p = XWINDOW (new); | |
3306 | ||
44fa5b1e | 3307 | p->frame = o->frame; |
7ab12479 | 3308 | p->next = o->next; |
265a9e55 | 3309 | if (!NILP (p->next)) |
7ab12479 JB |
3310 | XWINDOW (p->next)->prev = new; |
3311 | p->prev = window; | |
3312 | o->next = new; | |
3313 | p->parent = o->parent; | |
3314 | p->buffer = Qt; | |
5500c422 GM |
3315 | p->window_end_valid = Qnil; |
3316 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3317 | |
44fa5b1e | 3318 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3319 | |
265a9e55 | 3320 | if (!NILP (horflag)) |
7ab12479 JB |
3321 | { |
3322 | p->height = o->height; | |
3323 | p->top = o->top; | |
a59fed7e | 3324 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3325 | XSETFASTINT (o->width, size_int); |
3326 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3327 | } |
3328 | else | |
3329 | { | |
3330 | p->left = o->left; | |
3331 | p->width = o->width; | |
77ae0fe3 KH |
3332 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3333 | XSETFASTINT (o->height, size_int); | |
3334 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3335 | } |
3336 | ||
5500c422 GM |
3337 | /* Adjust glyph matrices. */ |
3338 | adjust_glyphs (fo); | |
543f5fb1 | 3339 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3340 | return new; |
3341 | } | |
3342 | \f | |
f95284d2 | 3343 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 3, "p", |
fdb82f93 PJ |
3344 | doc: /* Make current window ARG lines bigger. |
3345 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 RS |
3346 | Interactively, if an argument is not given, make the window one line bigger. |
3347 | ||
3348 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3349 | of the siblings above or to the left of the selected window. Only | |
3350 | siblings to the right or below are changed. */) | |
3351 | (arg, side, preserve_before) | |
3352 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3353 | { |
b7826503 | 3354 | CHECK_NUMBER (arg); |
f95284d2 RS |
3355 | enlarge_window (selected_window, XINT (arg), !NILP (side), |
3356 | !NILP (preserve_before)); | |
543f5fb1 RS |
3357 | |
3358 | if (! NILP (Vwindow_configuration_change_hook)) | |
3359 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3360 | ||
7ab12479 JB |
3361 | return Qnil; |
3362 | } | |
3363 | ||
3364 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
fdb82f93 PJ |
3365 | doc: /* Make current window ARG lines smaller. |
3366 | From program, optional second arg non-nil means shrink sideways arg columns. | |
3367 | Interactively, if an argument is not given, make the window one line smaller. */) | |
3368 | (arg, side) | |
413430c5 | 3369 | register Lisp_Object arg, side; |
7ab12479 | 3370 | { |
b7826503 | 3371 | CHECK_NUMBER (arg); |
f95284d2 | 3372 | enlarge_window (selected_window, -XINT (arg), !NILP (side), 0); |
543f5fb1 RS |
3373 | |
3374 | if (! NILP (Vwindow_configuration_change_hook)) | |
3375 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3376 | ||
7ab12479 JB |
3377 | return Qnil; |
3378 | } | |
3379 | ||
3380 | int | |
3381 | window_height (window) | |
3382 | Lisp_Object window; | |
3383 | { | |
3384 | register struct window *p = XWINDOW (window); | |
3385 | return XFASTINT (p->height); | |
3386 | } | |
3387 | ||
3388 | int | |
3389 | window_width (window) | |
3390 | Lisp_Object window; | |
3391 | { | |
3392 | register struct window *p = XWINDOW (window); | |
3393 | return XFASTINT (p->width); | |
3394 | } | |
3395 | ||
c1636aa6 | 3396 | |
7ab12479 | 3397 | #define CURBEG(w) \ |
3578db3c | 3398 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3399 | |
3400 | #define CURSIZE(w) \ | |
3578db3c | 3401 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3402 | |
233a4a2c | 3403 | |
f95284d2 | 3404 | /* Enlarge WINDOW by DELTA. WIDTHFLAG non-zero means |
233a4a2c | 3405 | increase its width. Siblings of the selected window are resized to |
f95284d2 RS |
3406 | fulfill the size request. If they become too small in the process, |
3407 | they will be deleted. | |
3408 | ||
3409 | If PRESERVE_BEFORE is nonzero, that means don't alter | |
3410 | the siblings to the left or above WINDOW. */ | |
7ab12479 | 3411 | |
f984d4fc | 3412 | static void |
f95284d2 | 3413 | enlarge_window (window, delta, widthflag, preserve_before) |
86c8e823 | 3414 | Lisp_Object window; |
f95284d2 | 3415 | int delta, widthflag, preserve_before; |
7ab12479 | 3416 | { |
86c8e823 | 3417 | Lisp_Object parent, next, prev; |
233a4a2c | 3418 | struct window *p; |
3578db3c KR |
3419 | Lisp_Object *sizep; |
3420 | int maximum; | |
5e14b1fc AS |
3421 | int (*sizefun) P_ ((Lisp_Object)) |
3422 | = widthflag ? window_width : window_height; | |
233a4a2c | 3423 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3424 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3425 | |
233a4a2c GM |
3426 | /* Check values of window_min_width and window_min_height for |
3427 | validity. */ | |
a481b3ea | 3428 | check_min_window_sizes (); |
7ab12479 | 3429 | |
233a4a2c | 3430 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3431 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3432 | error ("Window is not resizable"); | |
3433 | ||
3434 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3435 | while (1) |
3436 | { | |
3437 | p = XWINDOW (window); | |
3438 | parent = p->parent; | |
233a4a2c | 3439 | |
265a9e55 | 3440 | if (NILP (parent)) |
7ab12479 JB |
3441 | { |
3442 | if (widthflag) | |
3443 | error ("No other window to side of this one"); | |
3444 | break; | |
3445 | } | |
233a4a2c GM |
3446 | |
3447 | if (widthflag | |
3448 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3449 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3450 | break; |
233a4a2c | 3451 | |
7ab12479 JB |
3452 | window = parent; |
3453 | } | |
3454 | ||
05c2896a | 3455 | sizep = &CURSIZE (window); |
7ab12479 | 3456 | |
7ab12479 JB |
3457 | { |
3458 | register int maxdelta; | |
7ab12479 | 3459 | |
f95284d2 RS |
3460 | /* Compute the maximum size increment this window can have. */ |
3461 | ||
3462 | if (preserve_before) | |
3463 | { | |
3464 | if (!NILP (parent)) | |
3465 | { | |
3466 | maxdelta = (*sizefun) (parent) - XINT (*sizep); | |
3467 | /* Subtract size of siblings before, since we can't take that. */ | |
1ab964d7 | 3468 | maxdelta -= XINT (CURBEG (window)) - XINT (CURBEG (parent)); |
f95284d2 RS |
3469 | } |
3470 | else | |
3471 | maxdelta = (!NILP (p->next) ? ((*sizefun) (p->next) | |
3472 | - window_min_size (XWINDOW (p->next), | |
3473 | widthflag, 0, 0)) | |
3474 | : (delta = 0)); | |
3475 | } | |
3476 | else | |
3477 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) | |
3478 | /* This is a main window followed by a minibuffer. */ | |
3479 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
3480 | - window_min_size (XWINDOW (p->next), | |
3481 | widthflag, 0, 0)) | |
3482 | /* This is a minibuffer following a main window. */ | |
3483 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
3484 | - window_min_size (XWINDOW (p->prev), | |
3485 | widthflag, 0, 0)) | |
3486 | /* This is a frame with only one window, a minibuffer-only | |
3487 | or a minibufferless frame. */ | |
3488 | : (delta = 0)); | |
7ab12479 JB |
3489 | |
3490 | if (delta > maxdelta) | |
3491 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3492 | the full frame, or make the only window aside from the |
3493 | minibuffer the full frame. */ | |
7ab12479 | 3494 | delta = maxdelta; |
6b54027b | 3495 | } |
d5783c40 | 3496 | |
3578db3c | 3497 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3498 | { |
543f5fb1 | 3499 | delete_window (window); |
d5783c40 | 3500 | return; |
6b54027b RS |
3501 | } |
3502 | ||
3503 | if (delta == 0) | |
3504 | return; | |
7ab12479 | 3505 | |
f95284d2 | 3506 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
3507 | maximum = 0; |
3508 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3509 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3510 | widthflag, 0, 0); |
f95284d2 RS |
3511 | if (! preserve_before) |
3512 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
3513 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
3514 | widthflag, 0, 0); | |
db98a733 | 3515 | |
f95284d2 | 3516 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 3517 | if (delta <= maximum) |
7ab12479 | 3518 | { |
db98a733 RS |
3519 | Lisp_Object first_unaffected; |
3520 | Lisp_Object first_affected; | |
233a4a2c | 3521 | int fixed_p; |
db98a733 RS |
3522 | |
3523 | next = p->next; | |
3524 | prev = p->prev; | |
3525 | first_affected = window; | |
3526 | /* Look at one sibling at a time, | |
3527 | moving away from this window in both directions alternately, | |
3528 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 RS |
3529 | while (delta != 0 |
3530 | && (!NILP (next) || (!preserve_before && !NILP (prev)))) | |
db98a733 | 3531 | { |
db98a733 RS |
3532 | if (! NILP (next)) |
3533 | { | |
c1636aa6 | 3534 | int this_one = ((*sizefun) (next) |
233a4a2c | 3535 | - window_min_size (XWINDOW (next), |
f984d4fc | 3536 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3537 | if (!fixed_p) |
3538 | { | |
3539 | if (this_one > delta) | |
3540 | this_one = delta; | |
3541 | ||
3542 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3543 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3544 | |
233a4a2c GM |
3545 | delta -= this_one; |
3546 | } | |
3547 | ||
db98a733 RS |
3548 | next = XWINDOW (next)->next; |
3549 | } | |
233a4a2c | 3550 | |
db98a733 RS |
3551 | if (delta == 0) |
3552 | break; | |
233a4a2c | 3553 | |
f95284d2 | 3554 | if (!preserve_before && ! NILP (prev)) |
db98a733 | 3555 | { |
c1636aa6 | 3556 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3557 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3558 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3559 | if (!fixed_p) |
3560 | { | |
3561 | if (this_one > delta) | |
3562 | this_one = delta; | |
3563 | ||
3564 | first_affected = prev; | |
3565 | ||
3566 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3567 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3568 | |
3569 | delta -= this_one; | |
3570 | } | |
3571 | ||
db98a733 RS |
3572 | prev = XWINDOW (prev)->prev; |
3573 | } | |
3574 | } | |
3575 | ||
233a4a2c GM |
3576 | xassert (delta == 0); |
3577 | ||
db98a733 RS |
3578 | /* Now recalculate the edge positions of all the windows affected, |
3579 | based on the new sizes. */ | |
3580 | first_unaffected = next; | |
3581 | prev = first_affected; | |
3582 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3583 | prev = next, next = XWINDOW (next)->next) | |
3584 | { | |
3578db3c | 3585 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3586 | /* This does not change size of NEXT, |
3587 | but it propagates the new top edge to its children */ | |
3588 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3589 | } | |
7ab12479 JB |
3590 | } |
3591 | else | |
3592 | { | |
3593 | register int delta1; | |
3594 | register int opht = (*sizefun) (parent); | |
3595 | ||
3578db3c | 3596 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
3597 | { |
3598 | /* If trying to grow this window to or beyond size of the parent, | |
3599 | just delete all the sibling windows. */ | |
dc1ab1ee | 3600 | Lisp_Object start, tem, next; |
daf516d3 | 3601 | |
dc1ab1ee RS |
3602 | start = XWINDOW (parent)->vchild; |
3603 | if (NILP (start)) | |
3604 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 3605 | |
dc1ab1ee RS |
3606 | /* Delete any siblings that come after WINDOW. */ |
3607 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
3608 | while (! NILP (tem)) |
3609 | { | |
3610 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
3611 | delete_window (tem); |
3612 | tem = next; | |
3613 | } | |
3614 | ||
3615 | /* Delete any siblings that come after WINDOW. | |
3616 | Note that if START is not WINDOW, then WINDOW still | |
3617 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
3618 | tem = start; | |
3619 | while (! EQ (tem, window)) | |
3620 | { | |
3621 | next = XWINDOW (tem)->next; | |
3622 | delete_window (tem); | |
daf516d3 RS |
3623 | tem = next; |
3624 | } | |
3625 | } | |
7ab12479 | 3626 | else |
233a4a2c GM |
3627 | { |
3628 | /* Otherwise, make delta1 just right so that if we add | |
3629 | delta1 lines to this window and to the parent, and then | |
3630 | shrink the parent back to its original size, the new | |
3631 | proportional size of this window will increase by delta. | |
3632 | ||
3633 | The function size_window will compute the new height h' | |
3634 | of the window from delta1 as: | |
3635 | ||
3636 | e = delta1/n | |
3637 | x = delta1 - delta1/n * n for the 1st resizable child | |
3638 | h' = h + e + x | |
3639 | ||
3640 | where n is the number of children that can be resized. | |
3641 | We can ignore x by choosing a delta1 that is a multiple of | |
3642 | n. We want the height of this window to come out as | |
3643 | ||
3644 | h' = h + delta | |
3645 | ||
3646 | So, delta1 must be | |
3647 | ||
3648 | h + e = h + delta | |
3649 | delta1/n = delta | |
3650 | delta1 = n * delta. | |
3651 | ||
3652 | The number of children n rquals the number of resizable | |
3653 | children of this window + 1 because we know window itself | |
3654 | is resizable (otherwise we would have signalled an error. */ | |
3655 | ||
3656 | struct window *w = XWINDOW (window); | |
3657 | Lisp_Object s; | |
3658 | int n = 1; | |
3659 | ||
3660 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3661 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3662 | ++n; | |
3663 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3664 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3665 | ++n; | |
3666 | ||
3667 | delta1 = n * delta; | |
7ab12479 | 3668 | |
daf516d3 RS |
3669 | /* Add delta1 lines or columns to this window, and to the parent, |
3670 | keeping things consistent while not affecting siblings. */ | |
3671 | XSETINT (CURSIZE (parent), opht + delta1); | |
3672 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
3673 | ||
3674 | /* Squeeze out delta1 lines or columns from our parent, | |
3675 | shriking this window and siblings proportionately. | |
3676 | This brings parent back to correct size. | |
3677 | Delta1 was calculated so this makes this window the desired size, | |
3678 | taking it all out of the siblings. */ | |
3679 | (*setsizefun) (parent, opht, 0); | |
3680 | ||
3681 | } | |
7ab12479 JB |
3682 | } |
3683 | ||
d834a2e9 | 3684 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3685 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3686 | |
3687 | /* Adjust glyph matrices. */ | |
3688 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3689 | } |
c1636aa6 | 3690 | |
7ab12479 JB |
3691 | #undef CURBEG |
3692 | #undef CURSIZE | |
3693 | ||
5500c422 | 3694 | |
f984d4fc GM |
3695 | \f |
3696 | /*********************************************************************** | |
3697 | Resizing Mini-Windows | |
3698 | ***********************************************************************/ | |
3699 | ||
3700 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3701 | |
43b4a21f GM |
3702 | enum save_restore_action |
3703 | { | |
3704 | CHECK_ORIG_SIZES, | |
3705 | SAVE_ORIG_SIZES, | |
3706 | RESTORE_ORIG_SIZES | |
3707 | }; | |
3708 | ||
3709 | static int save_restore_orig_size P_ ((struct window *, | |
3710 | enum save_restore_action)); | |
f984d4fc GM |
3711 | |
3712 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3713 | from lowest windows first. */ | |
3714 | ||
3715 | static void | |
3716 | shrink_window_lowest_first (w, height) | |
3717 | struct window *w; | |
3718 | int height; | |
3719 | { | |
3720 | struct window *c; | |
3721 | Lisp_Object child; | |
3722 | int old_height; | |
3723 | ||
3724 | xassert (!MINI_WINDOW_P (w)); | |
3725 | ||
3726 | /* Set redisplay hints. */ | |
3727 | XSETFASTINT (w->last_modified, 0); | |
3728 | XSETFASTINT (w->last_overlay_modified, 0); | |
3729 | windows_or_buffers_changed++; | |
3730 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3731 | ||
3732 | old_height = XFASTINT (w->height); | |
3733 | XSETFASTINT (w->height, height); | |
3734 | ||
3735 | if (!NILP (w->hchild)) | |
3736 | { | |
3737 | for (child = w->hchild; !NILP (child); child = c->next) | |
3738 | { | |
3739 | c = XWINDOW (child); | |
3740 | c->top = w->top; | |
3741 | shrink_window_lowest_first (c, height); | |
3742 | } | |
3743 | } | |
3744 | else if (!NILP (w->vchild)) | |
3745 | { | |
3746 | Lisp_Object last_child; | |
3747 | int delta = old_height - height; | |
3748 | int last_top; | |
6bbd7a29 GM |
3749 | |
3750 | last_child = Qnil; | |
f984d4fc GM |
3751 | |
3752 | /* Find the last child. We are taking space from lowest windows | |
3753 | first, so we iterate over children from the last child | |
3754 | backwards. */ | |
3755 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3756 | last_child = child; | |
3757 | ||
3758 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3759 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3760 | { | |
3761 | int this_one; | |
3762 | ||
3763 | c = XWINDOW (child); | |
3764 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3765 | ||
3766 | if (this_one > delta) | |
3767 | this_one = delta; | |
3768 | ||
3769 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3770 | delta -= this_one; | |
3771 | } | |
3772 | ||
3773 | /* Compute new positions. */ | |
3578db3c | 3774 | last_top = XINT (w->top); |
f984d4fc GM |
3775 | for (child = w->vchild; !NILP (child); child = c->next) |
3776 | { | |
3777 | c = XWINDOW (child); | |
3778 | c->top = make_number (last_top); | |
3779 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3780 | last_top += XFASTINT (c->height); | |
3781 | } | |
3782 | } | |
3783 | } | |
3784 | ||
3785 | ||
43b4a21f GM |
3786 | /* Save, restore, or check positions and sizes in the window tree |
3787 | rooted at W. ACTION says what to do. | |
f984d4fc | 3788 | |
43b4a21f GM |
3789 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3790 | members are valid for all windows in the window tree. Value is | |
3791 | non-zero if they are valid. | |
3792 | ||
3793 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3794 | orig_top and orig_height for all windows in the tree. | |
3795 | ||
3796 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3797 | values stored in orig_top and orig_height for all windows. */ | |
3798 | ||
3799 | static int | |
3800 | save_restore_orig_size (w, action) | |
f984d4fc | 3801 | struct window *w; |
43b4a21f | 3802 | enum save_restore_action action; |
f984d4fc | 3803 | { |
43b4a21f GM |
3804 | int success_p = 1; |
3805 | ||
f984d4fc GM |
3806 | while (w) |
3807 | { | |
3808 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3809 | { |
3810 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3811 | success_p = 0; | |
3812 | } | |
f984d4fc | 3813 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3814 | { |
3815 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3816 | success_p = 0; | |
3817 | } | |
f984d4fc | 3818 | |
43b4a21f | 3819 | switch (action) |
f984d4fc | 3820 | { |
43b4a21f GM |
3821 | case CHECK_ORIG_SIZES: |
3822 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3823 | return 0; | |
3824 | break; | |
3825 | ||
3826 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3827 | w->orig_top = w->top; |
3828 | w->orig_height = w->height; | |
43b4a21f GM |
3829 | XSETFASTINT (w->last_modified, 0); |
3830 | XSETFASTINT (w->last_overlay_modified, 0); | |
3831 | break; | |
3832 | ||
3833 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3834 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3835 | w->top = w->orig_top; | |
3836 | w->height = w->orig_height; | |
3837 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3838 | XSETFASTINT (w->last_modified, 0); |
3839 | XSETFASTINT (w->last_overlay_modified, 0); | |
3840 | break; | |
3841 | ||
3842 | default: | |
3843 | abort (); | |
f984d4fc | 3844 | } |
43b4a21f | 3845 | |
f984d4fc GM |
3846 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3847 | } | |
43b4a21f GM |
3848 | |
3849 | return success_p; | |
f984d4fc GM |
3850 | } |
3851 | ||
3852 | ||
3853 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3854 | without deleting other windows. */ | |
3855 | ||
3856 | void | |
3857 | grow_mini_window (w, delta) | |
3858 | struct window *w; | |
3859 | int delta; | |
3860 | { | |
3861 | struct frame *f = XFRAME (w->frame); | |
3862 | struct window *root; | |
3863 | ||
3864 | xassert (MINI_WINDOW_P (w)); | |
3865 | xassert (delta >= 0); | |
3866 | ||
3867 | /* Check values of window_min_width and window_min_height for | |
3868 | validity. */ | |
3869 | check_min_window_sizes (); | |
3870 | ||
3871 | /* Compute how much we can enlarge the mini-window without deleting | |
3872 | other windows. */ | |
3873 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3874 | if (delta) | |
3875 | { | |
3876 | int min_height = window_min_size (root, 0, 0, 0); | |
3877 | if (XFASTINT (root->height) - delta < min_height) | |
8b8bd9c6 | 3878 | /* Note that the root window may already be smaller than |
eafa3196 GM |
3879 | min_height. */ |
3880 | delta = max (0, XFASTINT (root->height) - min_height); | |
f984d4fc GM |
3881 | } |
3882 | ||
3883 | if (delta) | |
3884 | { | |
3885 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3886 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3887 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3888 | |
3889 | /* Shrink other windows. */ | |
3890 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3891 | ||
3892 | /* Grow the mini-window. */ | |
3578db3c | 3893 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3894 | w->height = make_number (XFASTINT (w->height) + delta); |
3895 | XSETFASTINT (w->last_modified, 0); | |
3896 | XSETFASTINT (w->last_overlay_modified, 0); | |
3897 | ||
3898 | adjust_glyphs (f); | |
3899 | } | |
3900 | } | |
3901 | ||
3902 | ||
86c8e823 GM |
3903 | /* Shrink mini-window W. If there is recorded info about window sizes |
3904 | before a call to grow_mini_window, restore recorded window sizes. | |
3905 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3906 | line. */ | |
f984d4fc GM |
3907 | |
3908 | void | |
3909 | shrink_mini_window (w) | |
3910 | struct window *w; | |
3911 | { | |
3912 | struct frame *f = XFRAME (w->frame); | |
3913 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3914 | ||
43b4a21f | 3915 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3916 | { |
43b4a21f | 3917 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3918 | adjust_glyphs (f); |
3919 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3920 | windows_or_buffers_changed = 1; | |
3921 | } | |
86c8e823 GM |
3922 | else if (XFASTINT (w->height) > 1) |
3923 | { | |
0130fe1a GM |
3924 | /* Distribute the additional lines of the mini-window |
3925 | among the other windows. */ | |
86c8e823 GM |
3926 | Lisp_Object window; |
3927 | XSETWINDOW (window, w); | |
f95284d2 | 3928 | enlarge_window (window, 1 - XFASTINT (w->height), 0, 0); |
86c8e823 | 3929 | } |
f984d4fc GM |
3930 | } |
3931 | ||
3932 | ||
3933 | \f | |
5500c422 GM |
3934 | /* Mark window cursors off for all windows in the window tree rooted |
3935 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3936 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3937 | the frame are cleared. */ | |
3938 | ||
3939 | void | |
3940 | mark_window_cursors_off (w) | |
3941 | struct window *w; | |
3942 | { | |
3943 | while (w) | |
3944 | { | |
3945 | if (!NILP (w->hchild)) | |
3946 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3947 | else if (!NILP (w->vchild)) | |
3948 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3949 | else | |
3950 | w->phys_cursor_on_p = 0; | |
3951 | ||
3952 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3953 | } | |
3954 | } | |
3955 | ||
3956 | ||
e9c195b1 | 3957 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
3958 | |
3959 | int | |
3960 | window_internal_height (w) | |
3961 | struct window *w; | |
3962 | { | |
3963 | int ht = XFASTINT (w->height); | |
3964 | ||
e9c195b1 GM |
3965 | if (!MINI_WINDOW_P (w)) |
3966 | { | |
3967 | if (!NILP (w->parent) | |
3968 | || !NILP (w->vchild) | |
3969 | || !NILP (w->hchild) | |
3970 | || !NILP (w->next) | |
3971 | || !NILP (w->prev) | |
3972 | || WINDOW_WANTS_MODELINE_P (w)) | |
3973 | --ht; | |
7ab12479 | 3974 | |
e9c195b1 GM |
3975 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
3976 | --ht; | |
3977 | } | |
7ab12479 JB |
3978 | |
3979 | return ht; | |
3980 | } | |
3981 | ||
535e0b8e JB |
3982 | |
3983 | /* Return the number of columns in W. | |
a3c87d4e | 3984 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3985 | separating W from the sibling to its right. */ |
5500c422 | 3986 | |
535e0b8e JB |
3987 | int |
3988 | window_internal_width (w) | |
3989 | struct window *w; | |
3990 | { | |
5500c422 | 3991 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3992 | int width = XINT (w->width); |
3993 | ||
a3c87d4e | 3994 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3995 | /* Scroll bars occupy a few columns. */ |
3996 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3997 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3998 | /* The column of `|' characters separating side-by-side windows | |
3999 | occupies one column only. */ | |
4000 | width -= 1; | |
4001 | ||
4002 | /* On window-systems, areas to the left and right of the window | |
81d189fd | 4003 | are used as fringes. */ |
5500c422 | 4004 | if (FRAME_WINDOW_P (f)) |
81d189fd | 4005 | width -= FRAME_FRINGE_COLS (f); |
111e5992 RS |
4006 | |
4007 | return width; | |
535e0b8e JB |
4008 | } |
4009 | ||
5500c422 GM |
4010 | \f |
4011 | /************************************************************************ | |
4012 | Window Scrolling | |
4013 | ***********************************************************************/ | |
535e0b8e | 4014 | |
5500c422 | 4015 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4016 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4017 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4018 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4019 | means don't signal an error if we try to move over BEGV or ZV, | |
4020 | respectively. */ | |
7ab12479 | 4021 | |
101d1605 RS |
4022 | static void |
4023 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4024 | Lisp_Object window; |
4025 | int n; | |
101d1605 | 4026 | int whole; |
f8026fd8 | 4027 | int noerror; |
5500c422 GM |
4028 | { |
4029 | /* If we must, use the pixel-based version which is much slower than | |
4030 | the line-based one but can handle varying line heights. */ | |
4031 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4032 | window_scroll_pixel_based (window, n, whole, noerror); | |
4033 | else | |
4034 | window_scroll_line_based (window, n, whole, noerror); | |
4035 | } | |
4036 | ||
4037 | ||
4038 | /* Implementation of window_scroll that works based on pixel line | |
4039 | heights. See the comment of window_scroll for parameter | |
4040 | descriptions. */ | |
4041 | ||
4042 | static void | |
4043 | window_scroll_pixel_based (window, n, whole, noerror) | |
4044 | Lisp_Object window; | |
4045 | int n; | |
4046 | int whole; | |
4047 | int noerror; | |
4048 | { | |
4049 | struct it it; | |
4050 | struct window *w = XWINDOW (window); | |
4051 | struct text_pos start; | |
4052 | Lisp_Object tem; | |
4053 | int this_scroll_margin; | |
4054 | int preserve_y; | |
5cdb3cf3 MB |
4055 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4056 | int vscrolled = 0; | |
5500c422 GM |
4057 | |
4058 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4059 | ||
4060 | /* If PT is not visible in WINDOW, move back one half of | |
288d4e06 GM |
4061 | the screen. Allow PT to be partially visible, otherwise |
4062 | something like (scroll-down 1) with PT in the line before | |
4063 | the partially visible one would recenter. */ | |
4064 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
4065 | if (NILP (tem)) |
4066 | { | |
4067 | /* Move backward half the height of the window. Performance note: | |
4068 | vmotion used here is about 10% faster, but would give wrong | |
4069 | results for variable height lines. */ | |
4070 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4071 | it.current_y = it.last_visible_y; | |
202379cf | 4072 | move_it_vertically (&it, - window_box_height (w) / 2); |
5500c422 GM |
4073 | |
4074 | /* The function move_iterator_vertically may move over more than | |
4075 | the specified y-distance. If it->w is small, e.g. a | |
4076 | mini-buffer window, we may end up in front of the window's | |
4077 | display area. This is the case when Start displaying at the | |
4078 | start of the line containing PT in this case. */ | |
4079 | if (it.current_y <= 0) | |
4080 | { | |
4081 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4082 | move_it_vertically (&it, 0); | |
4083 | it.current_y = 0; | |
4084 | } | |
4085 | ||
4086 | start = it.current.pos; | |
4087 | } | |
4088 | ||
4089 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
4090 | point in the same window line as it is now, so get that line. */ | |
4091 | if (!NILP (Vscroll_preserve_screen_position)) | |
4092 | { | |
4093 | start_display (&it, w, start); | |
4094 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4095 | preserve_y = it.current_y; | |
4096 | } | |
4097 | else | |
4098 | preserve_y = -1; | |
4099 | ||
4100 | /* Move iterator it from start the specified distance forward or | |
4101 | backward. The result is the new window start. */ | |
4102 | start_display (&it, w, start); | |
4103 | if (whole) | |
4104 | { | |
202379cf | 4105 | int screen_full = (window_box_height (w) |
5500c422 | 4106 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); |
d4e7cf01 | 4107 | int dy = n * screen_full; |
d72340d4 GM |
4108 | |
4109 | /* Note that move_it_vertically always moves the iterator to the | |
4110 | start of a line. So, if the last line doesn't have a newline, | |
4111 | we would end up at the start of the line ending at ZV. */ | |
4112 | if (dy <= 0) | |
4113 | move_it_vertically_backward (&it, -dy); | |
4114 | else if (dy > 0) | |
4115 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, | |
4116 | MOVE_TO_POS | MOVE_TO_Y); | |
5500c422 GM |
4117 | } |
4118 | else | |
4119 | move_it_by_lines (&it, n, 1); | |
4120 | ||
4121 | /* End if we end up at ZV or BEGV. */ | |
4122 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
4123 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
4124 | { | |
5cdb3cf3 MB |
4125 | if (IT_CHARPOS (it) == ZV) |
4126 | { | |
4127 | if (it.current_y + it.max_ascent + it.max_descent | |
4128 | > it.last_visible_y) | |
a74eca50 GM |
4129 | { |
4130 | /* The last line was only partially visible, make it fully | |
4131 | visible. */ | |
4132 | w->vscroll = (it.last_visible_y | |
4133 | - it.current_y + it.max_ascent + it.max_descent); | |
4134 | adjust_glyphs (it.f); | |
4135 | } | |
5cdb3cf3 MB |
4136 | else if (noerror) |
4137 | return; | |
4138 | else | |
4139 | Fsignal (Qend_of_buffer, Qnil); | |
4140 | } | |
5500c422 | 4141 | else |
5cdb3cf3 MB |
4142 | { |
4143 | if (w->vscroll != 0) | |
4144 | /* The first line was only partially visible, make it fully | |
4145 | visible. */ | |
4146 | w->vscroll = 0; | |
4147 | else if (noerror) | |
4148 | return; | |
4149 | else | |
4150 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4151 | } | |
4152 | ||
4153 | /* If control gets here, then we vscrolled. */ | |
4154 | ||
4155 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4156 | ||
4157 | /* Don't try to change the window start below. */ | |
4158 | vscrolled = 1; | |
5500c422 GM |
4159 | } |
4160 | ||
5cdb3cf3 MB |
4161 | if (! vscrolled) |
4162 | { | |
4163 | /* Set the window start, and set up the window for redisplay. */ | |
4164 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), | |
4165 | w->buffer); | |
4166 | w->start_at_line_beg = Fbolp (); | |
4167 | w->update_mode_line = Qt; | |
4168 | XSETFASTINT (w->last_modified, 0); | |
4169 | XSETFASTINT (w->last_overlay_modified, 0); | |
4170 | /* Set force_start so that redisplay_window will run the | |
4171 | window-scroll-functions. */ | |
4172 | w->force_start = Qt; | |
4173 | } | |
5500c422 GM |
4174 | |
4175 | it.current_y = it.vpos = 0; | |
4176 | ||
4177 | /* Preserve the screen position if we must. */ | |
4178 | if (preserve_y >= 0) | |
4179 | { | |
4180 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
4181 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4182 | } | |
4183 | else | |
4184 | { | |
4185 | /* Move PT out of scroll margins. */ | |
4186 | this_scroll_margin = max (0, scroll_margin); | |
4187 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
4188 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
4189 | ||
4190 | if (n > 0) | |
4191 | { | |
4192 | /* We moved the window start towards ZV, so PT may be now | |
4193 | in the scroll margin at the top. */ | |
4194 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4195 | while (it.current_y < this_scroll_margin) | |
e9b2c961 RS |
4196 | { |
4197 | int prev = it.current_y; | |
4198 | move_it_by_lines (&it, 1, 1); | |
4199 | if (prev == it.current_y) | |
4200 | break; | |
4201 | } | |
5500c422 GM |
4202 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4203 | } | |
4204 | else if (n < 0) | |
4205 | { | |
5cdb3cf3 MB |
4206 | int charpos, bytepos; |
4207 | ||
5500c422 GM |
4208 | /* We moved the window start towards BEGV, so PT may be now |
4209 | in the scroll margin at the bottom. */ | |
4210 | move_it_to (&it, PT, -1, | |
4211 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4212 | MOVE_TO_POS | MOVE_TO_Y); | |
5cdb3cf3 MB |
4213 | |
4214 | /* Save our position, in case it's correct. */ | |
4215 | charpos = IT_CHARPOS (it); | |
4216 | bytepos = IT_BYTEPOS (it); | |
5500c422 | 4217 | |
5cdb3cf3 MB |
4218 | /* See if point is on a partially visible line at the end. */ |
4219 | move_it_by_lines (&it, 1, 1); | |
4220 | if (it.current_y > it.last_visible_y) | |
4221 | /* The last line was only partially visible, so back up two | |
4222 | lines to make sure we're on a fully visible line. */ | |
4223 | { | |
4224 | move_it_by_lines (&it, -2, 0); | |
4225 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4226 | } | |
4227 | else | |
4228 | /* No, the position we saved is OK, so use it. */ | |
4229 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4230 | } |
4231 | } | |
4232 | } | |
4233 | ||
4234 | ||
4235 | /* Implementation of window_scroll that works based on screen lines. | |
4236 | See the comment of window_scroll for parameter descriptions. */ | |
4237 | ||
4238 | static void | |
4239 | window_scroll_line_based (window, n, whole, noerror) | |
4240 | Lisp_Object window; | |
4241 | int n; | |
4242 | int whole; | |
4243 | int noerror; | |
7ab12479 JB |
4244 | { |
4245 | register struct window *w = XWINDOW (window); | |
5500c422 | 4246 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4247 | register int pos, pos_byte; |
7ab12479 JB |
4248 | register int ht = window_internal_height (w); |
4249 | register Lisp_Object tem; | |
4250 | int lose; | |
5500c422 | 4251 | Lisp_Object bolp; |
345d45b2 | 4252 | int startpos; |
101d1605 RS |
4253 | struct position posit; |
4254 | int original_vpos; | |
4255 | ||
d4e7cf01 GM |
4256 | /* If scrolling screen-fulls, compute the number of lines to |
4257 | scroll from the window's height. */ | |
4258 | if (whole) | |
4259 | n *= max (1, ht - next_screen_context_lines); | |
4260 | ||
101d1605 RS |
4261 | startpos = marker_position (w->start); |
4262 | ||
4263 | posit = *compute_motion (startpos, 0, 0, 0, | |
4264 | PT, ht, 0, | |
4265 | window_internal_width (w), XINT (w->hscroll), | |
4266 | 0, w); | |
4267 | original_vpos = posit.vpos; | |
0a1f771a | 4268 | |
d834a2e9 | 4269 | XSETFASTINT (tem, PT); |
6ffdb539 | 4270 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4271 | |
265a9e55 | 4272 | if (NILP (tem)) |
7ab12479 | 4273 | { |
cd2be1dd | 4274 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4275 | startpos = PT; |
7ab12479 JB |
4276 | } |
4277 | ||
345d45b2 | 4278 | SET_PT (startpos); |
5ce7b543 | 4279 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4280 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4281 | pos = PT; |
b73ea88e | 4282 | pos_byte = PT_BYTE; |
7ab12479 | 4283 | bolp = Fbolp (); |
b73ea88e | 4284 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4285 | |
4286 | if (lose) | |
f8026fd8 JB |
4287 | { |
4288 | if (noerror) | |
4289 | return; | |
4290 | else | |
4291 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4292 | } | |
7ab12479 JB |
4293 | |
4294 | if (pos < ZV) | |
7ab12479 | 4295 | { |
0c7da84e RS |
4296 | int this_scroll_margin = scroll_margin; |
4297 | ||
4298 | /* Don't use a scroll margin that is negative or too large. */ | |
4299 | if (this_scroll_margin < 0) | |
4300 | this_scroll_margin = 0; | |
4301 | ||
4302 | if (XINT (w->height) < 4 * scroll_margin) | |
4303 | this_scroll_margin = XINT (w->height) / 4; | |
4304 | ||
b73ea88e | 4305 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4306 | w->start_at_line_beg = bolp; |
4307 | w->update_mode_line = Qt; | |
d834a2e9 | 4308 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4309 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4310 | /* Set force_start so that redisplay_window will run |
4311 | the window-scroll-functions. */ | |
4312 | w->force_start = Qt; | |
0c7da84e | 4313 | |
5500c422 | 4314 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4315 | { |
b73ea88e | 4316 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4317 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4318 | } |
101d1605 RS |
4319 | /* If we scrolled forward, put point enough lines down |
4320 | that it is outside the scroll margin. */ | |
4321 | else if (n > 0) | |
0c7da84e | 4322 | { |
101d1605 RS |
4323 | int top_margin; |
4324 | ||
4325 | if (this_scroll_margin > 0) | |
4326 | { | |
b73ea88e | 4327 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4328 | Fvertical_motion (make_number (this_scroll_margin), window); |
4329 | top_margin = PT; | |
4330 | } | |
4331 | else | |
4332 | top_margin = pos; | |
4333 | ||
4334 | if (top_margin <= opoint) | |
b73ea88e | 4335 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4336 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4337 | { |
b73ea88e | 4338 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4339 | Fvertical_motion (make_number (original_vpos), window); |
4340 | } | |
9317a85d | 4341 | else |
335406fc | 4342 | SET_PT (top_margin); |
0c7da84e | 4343 | } |
101d1605 | 4344 | else if (n < 0) |
7ab12479 | 4345 | { |
101d1605 RS |
4346 | int bottom_margin; |
4347 | ||
0c7da84e RS |
4348 | /* If we scrolled backward, put point near the end of the window |
4349 | but not within the scroll margin. */ | |
b73ea88e | 4350 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4351 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4352 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4353 | bottom_margin = PT; | |
4354 | else | |
4355 | bottom_margin = PT + 1; | |
4356 | ||
4357 | if (bottom_margin > opoint) | |
b73ea88e | 4358 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4359 | else |
101d1605 | 4360 | { |
5500c422 | 4361 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4362 | { |
b73ea88e | 4363 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4364 | Fvertical_motion (make_number (original_vpos), window); |
4365 | } | |
4366 | else | |
4367 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4368 | } |
7ab12479 JB |
4369 | } |
4370 | } | |
4371 | else | |
f8026fd8 JB |
4372 | { |
4373 | if (noerror) | |
4374 | return; | |
4375 | else | |
4376 | Fsignal (Qend_of_buffer, Qnil); | |
4377 | } | |
7ab12479 | 4378 | } |
5500c422 GM |
4379 | |
4380 | ||
4381 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4382 | screen-full which is defined as the height of the window minus | |
4383 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4384 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4385 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4386 | |
4387 | static void | |
4388 | scroll_command (n, direction) | |
5500c422 | 4389 | Lisp_Object n; |
7ab12479 JB |
4390 | int direction; |
4391 | { | |
d4e7cf01 | 4392 | int count = BINDING_STACK_SIZE (); |
7ab12479 | 4393 | |
5500c422 GM |
4394 | xassert (abs (direction) == 1); |
4395 | ||
4396 | /* If selected window's buffer isn't current, make it current for | |
4397 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4398 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4399 | { |
4400 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4401 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4402 | |
4403 | /* Make redisplay consider other windows than just selected_window. */ | |
4404 | ++windows_or_buffers_changed; | |
95605e15 | 4405 | } |
7ab12479 | 4406 | |
265a9e55 | 4407 | if (NILP (n)) |
d4e7cf01 | 4408 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4409 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4410 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4411 | else |
4412 | { | |
4413 | n = Fprefix_numeric_value (n); | |
101d1605 | 4414 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4415 | } |
95605e15 JB |
4416 | |
4417 | unbind_to (count, Qnil); | |
7ab12479 JB |
4418 | } |
4419 | ||
4420 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
fdb82f93 PJ |
4421 | doc: /* Scroll text of current window upward ARG lines; or near full screen if no ARG. |
4422 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4423 | Negative ARG means scroll downward. | |
4424 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4425 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4426 | (arg) | |
413430c5 | 4427 | Lisp_Object arg; |
7ab12479 | 4428 | { |
413430c5 | 4429 | scroll_command (arg, 1); |
7ab12479 JB |
4430 | return Qnil; |
4431 | } | |
4432 | ||
4433 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
fdb82f93 PJ |
4434 | doc: /* Scroll text of current window down ARG lines; or near full screen if no ARG. |
4435 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4436 | Negative ARG means scroll upward. | |
4437 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4438 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4439 | (arg) | |
413430c5 | 4440 | Lisp_Object arg; |
7ab12479 | 4441 | { |
413430c5 | 4442 | scroll_command (arg, -1); |
7ab12479 JB |
4443 | return Qnil; |
4444 | } | |
ccd0664b RS |
4445 | \f |
4446 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 PJ |
4447 | doc: /* Return the other window for \"other window scroll\" commands. |
4448 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4449 | specifies the window. | |
4450 | If `other-window-scroll-buffer' is non-nil, a window | |
4451 | showing that buffer is used. */) | |
4452 | () | |
7ab12479 | 4453 | { |
ccd0664b | 4454 | Lisp_Object window; |
7ab12479 JB |
4455 | |
4456 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4457 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4458 | window = Vminibuf_scroll_window; |
4459 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4460 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4461 | { |
4462 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4463 | if (NILP (window)) |
53f76081 | 4464 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4465 | } |
4466 | else | |
dbc4e1c1 JB |
4467 | { |
4468 | /* Nothing specified; look for a neighboring window on the same | |
4469 | frame. */ | |
4470 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4471 | ||
4472 | if (EQ (window, selected_window)) | |
4473 | /* That didn't get us anywhere; look for a window on another | |
4474 | visible frame. */ | |
4475 | do | |
4476 | window = Fnext_window (window, Qnil, Qt); | |
4477 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4478 | && ! EQ (window, selected_window)); | |
4479 | } | |
4480 | ||
b7826503 | 4481 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4482 | |
4483 | if (EQ (window, selected_window)) | |
4484 | error ("There is no other window"); | |
4485 | ||
ccd0664b RS |
4486 | return window; |
4487 | } | |
4488 | ||
4489 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4490 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4491 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4492 | The next window is the one below the current one; or the one at the top | |
4493 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4494 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4495 | When calling from a program, supply as argument a number, nil, or `-'. | |
4496 | ||
4497 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4498 | specifies the window to scroll. | |
4499 | If `other-window-scroll-buffer' is non-nil, scroll the window | |
4500 | showing that buffer, popping the buffer up if necessary. */) | |
4501 | (arg) | |
d4e7cf01 | 4502 | Lisp_Object arg; |
ccd0664b | 4503 | { |
d4e7cf01 GM |
4504 | Lisp_Object window; |
4505 | struct window *w; | |
4506 | int count = BINDING_STACK_SIZE (); | |
ccd0664b RS |
4507 | |
4508 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4509 | w = XWINDOW (window); |
7ab12479 JB |
4510 | |
4511 | /* Don't screw up if window_scroll gets an error. */ | |
4512 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4513 | ++windows_or_buffers_changed; |
7ab12479 JB |
4514 | |
4515 | Fset_buffer (w->buffer); | |
4516 | SET_PT (marker_position (w->pointm)); | |
4517 | ||
413430c5 | 4518 | if (NILP (arg)) |
d4e7cf01 | 4519 | window_scroll (window, 1, 1, 1); |
413430c5 | 4520 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4521 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4522 | else |
4523 | { | |
413430c5 EN |
4524 | if (CONSP (arg)) |
4525 | arg = Fcar (arg); | |
b7826503 | 4526 | CHECK_NUMBER (arg); |
101d1605 | 4527 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4528 | } |
4529 | ||
b73ea88e | 4530 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4531 | unbind_to (count, Qnil); |
7ab12479 JB |
4532 | |
4533 | return Qnil; | |
4534 | } | |
4535 | \f | |
644b477c | 4536 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
fdb82f93 | 4537 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4538 | Default for ARG is window width minus 2. |
4539 | Value is the total amount of leftward horizontal scrolling in | |
4540 | effect after the change. | |
4541 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4542 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4543 | will not scroll a window to a column less than the value returned | |
4544 | by this function. */) | |
fdb82f93 | 4545 | (arg) |
7ab12479 JB |
4546 | register Lisp_Object arg; |
4547 | { | |
c67fa410 GM |
4548 | Lisp_Object result; |
4549 | int hscroll; | |
4550 | struct window *w = XWINDOW (selected_window); | |
4551 | ||
265a9e55 | 4552 | if (NILP (arg)) |
c67fa410 | 4553 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4554 | else |
4555 | arg = Fprefix_numeric_value (arg); | |
4556 | ||
c67fa410 GM |
4557 | hscroll = XINT (w->hscroll) + XINT (arg); |
4558 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4559 | ||
f5686fbd | 4560 | if (interactive_p (0)) |
c67fa410 GM |
4561 | w->min_hscroll = w->hscroll; |
4562 | ||
4563 | return result; | |
7ab12479 JB |
4564 | } |
4565 | ||
644b477c | 4566 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
fdb82f93 | 4567 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4568 | Default for ARG is window width minus 2. |
4569 | Value is the total amount of leftward horizontal scrolling in | |
4570 | effect after the change. | |
4571 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4572 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4573 | will not scroll a window to a column less than the value returned | |
4574 | by this function. */) | |
fdb82f93 | 4575 | (arg) |
7ab12479 JB |
4576 | register Lisp_Object arg; |
4577 | { | |
c67fa410 GM |
4578 | Lisp_Object result; |
4579 | int hscroll; | |
4580 | struct window *w = XWINDOW (selected_window); | |
4581 | ||
265a9e55 | 4582 | if (NILP (arg)) |
c67fa410 | 4583 | XSETFASTINT (arg, window_internal_width (w) - 2); |
7ab12479 JB |
4584 | else |
4585 | arg = Fprefix_numeric_value (arg); | |
4586 | ||
c67fa410 GM |
4587 | hscroll = XINT (w->hscroll) - XINT (arg); |
4588 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4589 | ||
f5686fbd | 4590 | if (interactive_p (0)) |
c67fa410 GM |
4591 | w->min_hscroll = w->hscroll; |
4592 | ||
4593 | return result; | |
7ab12479 JB |
4594 | } |
4595 | ||
fa832261 KS |
4596 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
4597 | doc: /* Return the window which was selected when entering the minibuffer. | |
4598 | Returns nil, if current window is not a minibuffer window. */) | |
4599 | () | |
4600 | { | |
4601 | if (minibuf_level > 0 | |
4602 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
4603 | && !NILP (minibuf_selected_window) | |
4604 | && WINDOW_LIVE_P (minibuf_selected_window)) | |
4605 | return minibuf_selected_window; | |
4606 | ||
4607 | return Qnil; | |
4608 | } | |
4609 | ||
12c8b416 GM |
4610 | /* Value is the number of lines actually displayed in window W, |
4611 | as opposed to its height. */ | |
4612 | ||
4613 | static int | |
4614 | displayed_window_lines (w) | |
4615 | struct window *w; | |
4616 | { | |
4617 | struct it it; | |
4618 | struct text_pos start; | |
4619 | int height = window_box_height (w); | |
4620 | struct buffer *old_buffer; | |
4621 | int bottom_y; | |
4622 | ||
4623 | if (XBUFFER (w->buffer) != current_buffer) | |
4624 | { | |
4625 | old_buffer = current_buffer; | |
4626 | set_buffer_internal (XBUFFER (w->buffer)); | |
4627 | } | |
4628 | else | |
4629 | old_buffer = NULL; | |
4630 | ||
521b203e GM |
4631 | /* In case W->start is out of the accessible range, do something |
4632 | reasonable. This happens in Info mode when Info-scroll-down | |
4633 | calls (recenter -1) while W->start is 1. */ | |
4634 | if (XMARKER (w->start)->charpos < BEGV) | |
4635 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4636 | else if (XMARKER (w->start)->charpos > ZV) | |
4637 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4638 | else | |
4639 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4640 | ||
12c8b416 GM |
4641 | start_display (&it, w, start); |
4642 | move_it_vertically (&it, height); | |
c8bc6f65 | 4643 | bottom_y = line_bottom_y (&it); |
12c8b416 GM |
4644 | |
4645 | /* Add in empty lines at the bottom of the window. */ | |
4646 | if (bottom_y < height) | |
4647 | { | |
c8bc6f65 GM |
4648 | int uy = CANON_Y_UNIT (it.f); |
4649 | it.vpos += (height - bottom_y + uy - 1) / uy; | |
12c8b416 GM |
4650 | } |
4651 | ||
c8bc6f65 GM |
4652 | if (old_buffer) |
4653 | set_buffer_internal (old_buffer); | |
4654 | ||
12c8b416 GM |
4655 | return it.vpos; |
4656 | } | |
4657 | ||
4658 | ||
7ab12479 | 4659 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
4660 | doc: /* Center point in window and redisplay frame. |
4661 | With prefix argument ARG, recenter putting point on screen line ARG | |
4662 | relative to the current window. If ARG is negative, it counts up from the | |
4663 | bottom of the window. (ARG should be less than the height of the window.) | |
4664 | ||
4665 | If ARG is omitted or nil, erase the entire frame and then | |
4666 | redraw with point in the center of the current window. | |
4667 | Just C-u as prefix means put point in the center of the window | |
4668 | and redisplay normally--don't erase and redraw the frame. */) | |
4669 | (arg) | |
413430c5 | 4670 | register Lisp_Object arg; |
7ab12479 | 4671 | { |
6df47b59 | 4672 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
4673 | struct buffer *buf = XBUFFER (w->buffer); |
4674 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
4675 | int center_p = 0; |
4676 | int charpos, bytepos; | |
7ab12479 | 4677 | |
0fa5d25b RS |
4678 | /* If redisplay is suppressed due to an error, try again. */ |
4679 | obuf->display_error_modiff = 0; | |
4680 | ||
413430c5 | 4681 | if (NILP (arg)) |
7ab12479 | 4682 | { |
f02d6d5c KH |
4683 | int i; |
4684 | ||
4685 | /* Invalidate pixel data calculated for all compositions. */ | |
4686 | for (i = 0; i < n_compositions; i++) | |
4687 | composition_table[i]->font = NULL; | |
7ab12479 | 4688 | |
527b6458 | 4689 | Fredraw_frame (w->frame); |
44fa5b1e | 4690 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 4691 | center_p = 1; |
7ab12479 | 4692 | } |
413430c5 | 4693 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 4694 | center_p = 1; |
7ab12479 JB |
4695 | else |
4696 | { | |
413430c5 | 4697 | arg = Fprefix_numeric_value (arg); |
b7826503 | 4698 | CHECK_NUMBER (arg); |
7ab12479 JB |
4699 | } |
4700 | ||
478292ed | 4701 | set_buffer_internal (buf); |
7ab12479 | 4702 | |
521b203e | 4703 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
4704 | have variable-height lines and centering point on the basis of |
4705 | line counts would lead to strange effects. */ | |
521b203e | 4706 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 4707 | { |
6df47b59 GM |
4708 | if (center_p) |
4709 | { | |
521b203e GM |
4710 | struct it it; |
4711 | struct text_pos pt; | |
4712 | ||
4713 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4714 | start_display (&it, w, pt); | |
202379cf | 4715 | move_it_vertically (&it, - window_box_height (w) / 2); |
521b203e GM |
4716 | charpos = IT_CHARPOS (it); |
4717 | bytepos = IT_BYTEPOS (it); | |
6df47b59 GM |
4718 | } |
4719 | else if (XINT (arg) < 0) | |
4720 | { | |
521b203e GM |
4721 | struct it it; |
4722 | struct text_pos pt; | |
d466fa4d | 4723 | int y0, y1, h, nlines; |
521b203e GM |
4724 | |
4725 | SET_TEXT_POS (pt, PT, PT_BYTE); | |
4726 | start_display (&it, w, pt); | |
4727 | y0 = it.current_y; | |
4728 | ||
d466fa4d | 4729 | /* The amount of pixels we have to move back is the window |
521b203e GM |
4730 | height minus what's displayed in the line containing PT, |
4731 | and the lines below. */ | |
d466fa4d GM |
4732 | nlines = - XINT (arg) - 1; |
4733 | move_it_by_lines (&it, nlines, 1); | |
4734 | ||
201c831a | 4735 | y1 = line_bottom_y (&it); |
d466fa4d GM |
4736 | |
4737 | /* If we can't move down NLINES lines because we hit | |
4738 | the end of the buffer, count in some empty lines. */ | |
4739 | if (it.vpos < nlines) | |
4740 | y1 += (nlines - it.vpos) * CANON_Y_UNIT (it.f); | |
4741 | ||
201c831a GM |
4742 | h = window_box_height (w) - (y1 - y0); |
4743 | ||
521b203e | 4744 | start_display (&it, w, pt); |
201c831a | 4745 | move_it_vertically (&it, - h); |
521b203e GM |
4746 | charpos = IT_CHARPOS (it); |
4747 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 4748 | } |
521b203e GM |
4749 | else |
4750 | { | |
4751 | struct position pos; | |
4752 | pos = *vmotion (PT, - XINT (arg), w); | |
4753 | charpos = pos.bufpos; | |
4754 | bytepos = pos.bytepos; | |
4755 | } | |
4756 | } | |
4757 | else | |
4758 | { | |
4759 | struct position pos; | |
4760 | int ht = window_internal_height (w); | |
4761 | ||
4762 | if (center_p) | |
4763 | arg = make_number (ht / 2); | |
4764 | else if (XINT (arg) < 0) | |
4765 | arg = make_number (XINT (arg) + ht); | |
6df47b59 GM |
4766 | |
4767 | pos = *vmotion (PT, - XINT (arg), w); | |
4768 | charpos = pos.bufpos; | |
4769 | bytepos = pos.bytepos; | |
4770 | } | |
4771 | ||
4772 | /* Set the new window start. */ | |
4773 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 4774 | w->window_end_valid = Qnil; |
7ab12479 | 4775 | w->force_start = Qt; |
6df47b59 GM |
4776 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
4777 | w->start_at_line_beg = Qt; | |
4778 | else | |
4779 | w->start_at_line_beg = Qnil; | |
4780 | ||
478292ed | 4781 | set_buffer_internal (obuf); |
7ab12479 JB |
4782 | return Qnil; |
4783 | } | |
b7617575 GM |
4784 | |
4785 | ||
81fe0836 | 4786 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
4787 | 0, 1, 0, |
4788 | doc: /* Return the height in lines of the text display area of WINDOW. | |
4789 | This doesn't include the mode-line (or header-line if any) or any | |
4790 | partial-height lines in the text display area. */) | |
4791 | (window) | |
81fe0836 MB |
4792 | Lisp_Object window; |
4793 | { | |
4794 | struct window *w = decode_window (window); | |
4795 | int pixel_height = window_box_height (w); | |
4796 | int line_height = pixel_height / CANON_Y_UNIT (XFRAME (w->frame)); | |
4797 | return make_number (line_height); | |
4798 | } | |
4799 | ||
4800 | ||
7ab12479 JB |
4801 | \f |
4802 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
4803 | 1, 1, "P", |
4804 | doc: /* Position point relative to window. | |
4805 | With no argument, position point at center of window. | |
4806 | An argument specifies vertical position within the window; | |
4807 | zero means top of window, negative means relative to bottom of window. */) | |
4808 | (arg) | |
b7617575 | 4809 | Lisp_Object arg; |
7ab12479 | 4810 | { |
b7617575 GM |
4811 | struct window *w = XWINDOW (selected_window); |
4812 | int lines, start; | |
540b6aa0 | 4813 | Lisp_Object window; |
7ab12479 | 4814 | |
b7617575 | 4815 | window = selected_window; |
7ab12479 JB |
4816 | start = marker_position (w->start); |
4817 | if (start < BEGV || start > ZV) | |
4818 | { | |
b7617575 | 4819 | int height = window_internal_height (w); |
cd2be1dd | 4820 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4821 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4822 | w->start_at_line_beg = Fbolp (); |
4823 | w->force_start = Qt; | |
4824 | } | |
4825 | else | |
b73ea88e | 4826 | Fgoto_char (w->start); |
7ab12479 | 4827 | |
b7617575 GM |
4828 | lines = displayed_window_lines (w); |
4829 | if (NILP (arg)) | |
4830 | XSETFASTINT (arg, lines / 2); | |
4831 | else | |
4832 | { | |
4833 | arg = Fprefix_numeric_value (arg); | |
4834 | if (XINT (arg) < 0) | |
4835 | XSETINT (arg, XINT (arg) + lines); | |
4836 | } | |
4837 | ||
c8bc6f65 | 4838 | /* Skip past a partially visible first line. */ |
163784df | 4839 | if (w->vscroll) |
163784df MB |
4840 | XSETINT (arg, XINT (arg) + 1); |
4841 | ||
540b6aa0 | 4842 | return Fvertical_motion (arg, window); |
7ab12479 | 4843 | } |
5500c422 GM |
4844 | |
4845 | ||
7ab12479 | 4846 | \f |
5500c422 GM |
4847 | /*********************************************************************** |
4848 | Window Configuration | |
4849 | ***********************************************************************/ | |
4850 | ||
7ab12479 JB |
4851 | struct save_window_data |
4852 | { | |
f5ccc0cc | 4853 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4854 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4855 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4856 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4857 | Lisp_Object selected_frame; |
7ab12479 JB |
4858 | Lisp_Object current_window; |
4859 | Lisp_Object current_buffer; | |
4860 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 4861 | Lisp_Object minibuf_selected_window; |
7ab12479 | 4862 | Lisp_Object root_window; |
bdc727bf | 4863 | Lisp_Object focus_frame; |
756b6edc RS |
4864 | /* Record the values of window-min-width and window-min-height |
4865 | so that window sizes remain consistent with them. */ | |
4866 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4867 | /* A vector, each of whose elements is a struct saved_window |
4868 | for one window. */ | |
7ab12479 JB |
4869 | Lisp_Object saved_windows; |
4870 | }; | |
ff06df24 | 4871 | |
cbff28e8 | 4872 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 4873 | struct saved_window |
ea68264b GM |
4874 | { |
4875 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
4876 | EMACS_INT size_from_Lisp_Vector_struct; | |
4877 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 4878 | |
ea68264b GM |
4879 | Lisp_Object window; |
4880 | Lisp_Object buffer, start, pointm, mark; | |
4881 | Lisp_Object left, top, width, height, hscroll, min_hscroll; | |
4882 | Lisp_Object parent, prev; | |
4883 | Lisp_Object start_at_line_beg; | |
4884 | Lisp_Object display_table; | |
4885 | Lisp_Object orig_top, orig_height; | |
4886 | }; | |
4887 | ||
4888 | #define SAVED_WINDOW_VECTOR_SIZE 17 /* Arg to Fmake_vector */ | |
7ab12479 JB |
4889 | |
4890 | #define SAVED_WINDOW_N(swv,n) \ | |
4891 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4892 | ||
4893 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
4894 | doc: /* Return t if OBJECT is a window-configuration object. */) |
4895 | (object) | |
413430c5 | 4896 | Lisp_Object object; |
7ab12479 | 4897 | { |
413430c5 | 4898 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4899 | return Qt; |
4900 | return Qnil; | |
4901 | } | |
4902 | ||
3f8ab7bd | 4903 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
4904 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
4905 | (config) | |
3f8ab7bd RS |
4906 | Lisp_Object config; |
4907 | { | |
4908 | register struct save_window_data *data; | |
4909 | struct Lisp_Vector *saved_windows; | |
4910 | ||
4911 | if (! WINDOW_CONFIGURATIONP (config)) | |
4912 | wrong_type_argument (Qwindow_configuration_p, config); | |
4913 | ||
4914 | data = (struct save_window_data *) XVECTOR (config); | |
4915 | saved_windows = XVECTOR (data->saved_windows); | |
4916 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4917 | } | |
4918 | ||
d5b2799e | 4919 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
4920 | Sset_window_configuration, 1, 1, 0, |
4921 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
4922 | CONFIGURATION must be a value previously returned | |
4923 | by `current-window-configuration' (which see). | |
4924 | If CONFIGURATION was made from a frame that is now deleted, | |
4925 | only frame-independent values can be restored. In this case, | |
4926 | the return value is nil. Otherwise the value is t. */) | |
4927 | (configuration) | |
2f83aebe | 4928 | Lisp_Object configuration; |
7ab12479 | 4929 | { |
7ab12479 JB |
4930 | register struct save_window_data *data; |
4931 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4932 | Lisp_Object new_current_buffer; |
fd482be5 | 4933 | Lisp_Object frame; |
44fa5b1e | 4934 | FRAME_PTR f; |
d2b35234 | 4935 | int old_point = -1; |
7ab12479 | 4936 | |
017b2bad | 4937 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4938 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4939 | |
2f83aebe | 4940 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4941 | saved_windows = XVECTOR (data->saved_windows); |
4942 | ||
7ab12479 | 4943 | new_current_buffer = data->current_buffer; |
265a9e55 | 4944 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4945 | new_current_buffer = Qnil; |
d2b35234 RS |
4946 | else |
4947 | { | |
4948 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4949 | old_point = PT; | |
4950 | } | |
7ab12479 | 4951 | |
fd482be5 JB |
4952 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4953 | f = XFRAME (frame); | |
aa35ba9e | 4954 | |
fd482be5 JB |
4955 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4956 | However, there is other stuff we should still try to do below. */ | |
4957 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4958 | { |
fd482be5 JB |
4959 | register struct window *w; |
4960 | register struct saved_window *p; | |
5500c422 GM |
4961 | struct window *root_window; |
4962 | struct window **leaf_windows; | |
4963 | int n_leaf_windows; | |
c4280705 | 4964 | int k, i, n; |
fd482be5 JB |
4965 | |
4966 | /* If the frame has been resized since this window configuration was | |
4967 | made, we change the frame to the size specified in the | |
4968 | configuration, restore the configuration, and then resize it | |
4969 | back. We keep track of the prevailing height in these variables. */ | |
4970 | int previous_frame_height = FRAME_HEIGHT (f); | |
4971 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4972 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4973 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4974 | |
d2b35234 RS |
4975 | /* The mouse highlighting code could get screwed up |
4976 | if it runs during this. */ | |
4977 | BLOCK_INPUT; | |
4978 | ||
fd482be5 JB |
4979 | if (XFASTINT (data->frame_height) != previous_frame_height |
4980 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4981 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4982 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4983 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4984 | if (XFASTINT (data->frame_menu_bar_lines) |
4985 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4986 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4987 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4988 | if (XFASTINT (data->frame_tool_bar_lines) |
4989 | != previous_frame_tool_bar_lines) | |
4990 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4991 | #endif |
217f2871 | 4992 | #endif |
fd482be5 | 4993 | |
719eaeb1 GM |
4994 | /* "Swap out" point from the selected window |
4995 | into its buffer. We do this now, before | |
4996 | restoring the window contents, and prevent it from | |
4997 | being done later on when we select a new window. */ | |
596ae0cf RS |
4998 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4999 | { | |
5000 | w = XWINDOW (selected_window); | |
5001 | set_marker_both (w->pointm, | |
5002 | w->buffer, | |
5003 | BUF_PT (XBUFFER (w->buffer)), | |
5004 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5005 | } | |
5006 | ||
fd482be5 | 5007 | windows_or_buffers_changed++; |
29aeee73 | 5008 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5009 | |
5500c422 GM |
5010 | /* Problem: Freeing all matrices and later allocating them again |
5011 | is a serious redisplay flickering problem. What we would | |
5012 | really like to do is to free only those matrices not reused | |
5013 | below. */ | |
5014 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
5015 | leaf_windows | |
5016 | = (struct window **) alloca (count_windows (root_window) | |
5017 | * sizeof (struct window *)); | |
5018 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5019 | ||
756b6edc RS |
5020 | /* Temporarily avoid any problems with windows that are smaller |
5021 | than they are supposed to be. */ | |
5022 | window_min_height = 1; | |
5023 | window_min_width = 1; | |
5024 | ||
fd482be5 JB |
5025 | /* Kludge Alert! |
5026 | Mark all windows now on frame as "deleted". | |
5027 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5028 | |
fd482be5 JB |
5029 | Save their current buffers in their height fields, since we may |
5030 | need it later, if a buffer saved in the configuration is now | |
5031 | dead. */ | |
5032 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
5033 | ||
5034 | for (k = 0; k < saved_windows->size; k++) | |
5035 | { | |
5036 | p = SAVED_WINDOW_N (saved_windows, k); | |
5037 | w = XWINDOW (p->window); | |
5038 | w->next = Qnil; | |
7ab12479 | 5039 | |
fd482be5 JB |
5040 | if (!NILP (p->parent)) |
5041 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5042 | XFASTINT (p->parent))->window; | |
5043 | else | |
5044 | w->parent = Qnil; | |
7ab12479 | 5045 | |
fd482be5 | 5046 | if (!NILP (p->prev)) |
7ab12479 | 5047 | { |
fd482be5 JB |
5048 | w->prev = SAVED_WINDOW_N (saved_windows, |
5049 | XFASTINT (p->prev))->window; | |
5050 | XWINDOW (w->prev)->next = p->window; | |
5051 | } | |
5052 | else | |
5053 | { | |
5054 | w->prev = Qnil; | |
5055 | if (!NILP (w->parent)) | |
5056 | { | |
5057 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
5058 | { | |
5059 | XWINDOW (w->parent)->vchild = p->window; | |
5060 | XWINDOW (w->parent)->hchild = Qnil; | |
5061 | } | |
5062 | else | |
5063 | { | |
5064 | XWINDOW (w->parent)->hchild = p->window; | |
5065 | XWINDOW (w->parent)->vchild = Qnil; | |
5066 | } | |
5067 | } | |
5068 | } | |
5069 | ||
5070 | /* If we squirreled away the buffer in the window's height, | |
5071 | restore it now. */ | |
017b2bad | 5072 | if (BUFFERP (w->height)) |
fd482be5 JB |
5073 | w->buffer = w->height; |
5074 | w->left = p->left; | |
5075 | w->top = p->top; | |
5076 | w->width = p->width; | |
5077 | w->height = p->height; | |
5078 | w->hscroll = p->hscroll; | |
ea68264b | 5079 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5080 | w->display_table = p->display_table; |
a1d58e5b GM |
5081 | w->orig_top = p->orig_top; |
5082 | w->orig_height = p->orig_height; | |
d834a2e9 | 5083 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5084 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5085 | |
5086 | /* Reinstall the saved buffer and pointers into it. */ | |
5087 | if (NILP (p->buffer)) | |
5088 | w->buffer = p->buffer; | |
5089 | else | |
5090 | { | |
5091 | if (!NILP (XBUFFER (p->buffer)->name)) | |
5092 | /* If saved buffer is alive, install it. */ | |
5093 | { | |
5094 | w->buffer = p->buffer; | |
5095 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
5096 | set_marker_restricted (w->start, p->start, w->buffer); |
5097 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 5098 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 5099 | p->mark, w->buffer); |
fd482be5 JB |
5100 | |
5101 | /* As documented in Fcurrent_window_configuration, don't | |
5102 | save the location of point in the buffer which was current | |
5103 | when the window configuration was recorded. */ | |
6b54027b RS |
5104 | if (!EQ (p->buffer, new_current_buffer) |
5105 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
5106 | Fgoto_char (w->pointm); |
5107 | } | |
52a68e98 RS |
5108 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
5109 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 5110 | { |
fd482be5 JB |
5111 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
5112 | /* This will set the markers to beginning of visible | |
5113 | range. */ | |
5114 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5115 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
5116 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
5117 | } |
5118 | else | |
fd482be5 | 5119 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 5120 | are real. */ |
7ab12479 | 5121 | { |
fd482be5 JB |
5122 | /* Set window markers at start of visible range. */ |
5123 | if (XMARKER (w->start)->buffer == 0) | |
5124 | set_marker_restricted (w->start, make_number (0), | |
5125 | w->buffer); | |
5126 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
5127 | set_marker_restricted_both (w->pointm, w->buffer, |
5128 | BUF_PT (XBUFFER (w->buffer)), | |
5129 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 5130 | w->start_at_line_beg = Qt; |
7ab12479 JB |
5131 | } |
5132 | } | |
5133 | } | |
9ace597f | 5134 | |
fd482be5 | 5135 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
5136 | /* Prevent "swapping out point" in the old selected window |
5137 | using the buffer that has been restored into it. | |
5138 | That swapping out has already been done, | |
5139 | near the beginning of this function. */ | |
5140 | selected_window = Qnil; | |
fd482be5 | 5141 | Fselect_window (data->current_window); |
396a830c RS |
5142 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
5143 | = selected_window; | |
7ab12479 | 5144 | |
db269683 | 5145 | if (NILP (data->focus_frame) |
017b2bad | 5146 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5147 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5148 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5149 | |
fd482be5 JB |
5150 | #if 0 /* I don't understand why this is needed, and it causes problems |
5151 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5152 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5153 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5154 | 0, 0); |
fd482be5 JB |
5155 | #endif |
5156 | ||
5157 | /* Set the screen height to the value it had before this function. */ | |
5158 | if (previous_frame_height != FRAME_HEIGHT (f) | |
5159 | || previous_frame_width != FRAME_WIDTH (f)) | |
5160 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 5161 | 0, 0, 0); |
e3678b64 | 5162 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5163 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5164 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5165 | make_number (0)); | |
4314246f | 5166 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5167 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5168 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5169 | make_number (0)); | |
4314246f | 5170 | #endif |
217f2871 | 5171 | #endif |
d2b35234 | 5172 | |
5500c422 | 5173 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5174 | for (i = n = 0; i < n_leaf_windows; ++i) |
5175 | { | |
5176 | if (NILP (leaf_windows[i]->buffer)) | |
5177 | { | |
5178 | /* Assert it's not reused as a combination. */ | |
5179 | xassert (NILP (leaf_windows[i]->hchild) | |
5180 | && NILP (leaf_windows[i]->vchild)); | |
5181 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5182 | } |
5183 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5184 | ++n; | |
5185 | } | |
5186 | ||
5187 | /* If more than one window shows the new and old current buffer, | |
5188 | don't try to preserve point in that buffer. */ | |
5189 | if (old_point > 0 && n > 1) | |
5190 | old_point = -1; | |
5500c422 GM |
5191 | |
5192 | adjust_glyphs (f); | |
5193 | ||
d2b35234 | 5194 | UNBLOCK_INPUT; |
756b6edc | 5195 | |
478292ed RS |
5196 | /* Fselect_window will have made f the selected frame, so we |
5197 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5198 | selected window too, but that doesn't make the call to | |
5199 | Fselect_window above totally superfluous; it still sets f's | |
5200 | selected window. */ | |
5201 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5202 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5203 | |
5204 | if (! NILP (Vwindow_configuration_change_hook) | |
5205 | && ! NILP (Vrun_hooks)) | |
5206 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5207 | } | |
bdc727bf JB |
5208 | |
5209 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
5210 | { |
5211 | Fset_buffer (new_current_buffer); | |
5212 | ||
5213 | /* If the buffer that is current now is the same | |
5214 | that was current before setting the window configuration, | |
5215 | don't alter its PT. */ | |
5216 | if (old_point >= 0) | |
5217 | SET_PT (old_point); | |
5218 | } | |
bdc727bf | 5219 | |
478292ed RS |
5220 | /* Restore the minimum heights recorded in the configuration. */ |
5221 | window_min_height = XINT (data->min_height); | |
5222 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5223 | |
478292ed | 5224 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5225 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5226 | |
3f8ab7bd | 5227 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5228 | } |
5229 | ||
44fa5b1e | 5230 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5231 | by setting their buffers to nil. */ |
5232 | ||
fd482be5 | 5233 | void |
7ab12479 JB |
5234 | delete_all_subwindows (w) |
5235 | register struct window *w; | |
5236 | { | |
265a9e55 | 5237 | if (!NILP (w->next)) |
7ab12479 | 5238 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5239 | if (!NILP (w->vchild)) |
7ab12479 | 5240 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5241 | if (!NILP (w->hchild)) |
7ab12479 | 5242 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
5243 | |
5244 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
5245 | ||
86e48436 RS |
5246 | if (!NILP (w->buffer)) |
5247 | unshow_buffer (w); | |
5248 | ||
605be8af JB |
5249 | /* We set all three of these fields to nil, to make sure that we can |
5250 | distinguish this dead window from any live window. Live leaf | |
5251 | windows will have buffer set, and combination windows will have | |
5252 | vchild or hchild set. */ | |
5253 | w->buffer = Qnil; | |
5254 | w->vchild = Qnil; | |
5255 | w->hchild = Qnil; | |
acf70840 GM |
5256 | |
5257 | Vwindow_list = Qnil; | |
7ab12479 JB |
5258 | } |
5259 | \f | |
5260 | static int | |
5261 | count_windows (window) | |
5262 | register struct window *window; | |
5263 | { | |
5264 | register int count = 1; | |
265a9e55 | 5265 | if (!NILP (window->next)) |
7ab12479 | 5266 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5267 | if (!NILP (window->vchild)) |
7ab12479 | 5268 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5269 | if (!NILP (window->hchild)) |
7ab12479 JB |
5270 | count += count_windows (XWINDOW (window->hchild)); |
5271 | return count; | |
5272 | } | |
5273 | ||
5500c422 GM |
5274 | |
5275 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
5276 | Value is last index + 1. */ | |
5277 | ||
5278 | static int | |
5279 | get_leaf_windows (w, flat, i) | |
5280 | struct window *w; | |
5281 | struct window **flat; | |
5282 | int i; | |
5283 | { | |
5284 | while (w) | |
5285 | { | |
5286 | if (!NILP (w->hchild)) | |
5287 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5288 | else if (!NILP (w->vchild)) | |
5289 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
5290 | else | |
5291 | flat[i++] = w; | |
5292 | ||
5293 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5294 | } | |
5295 | ||
5296 | return i; | |
5297 | } | |
5298 | ||
5299 | ||
5300 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5301 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5302 | can be returned. */ | |
5303 | ||
5304 | struct glyph * | |
5305 | get_phys_cursor_glyph (w) | |
5306 | struct window *w; | |
5307 | { | |
5308 | struct glyph_row *row; | |
5309 | struct glyph *glyph; | |
5310 | ||
5311 | if (w->phys_cursor.vpos >= 0 | |
5312 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5313 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5314 | row->enabled_p) | |
5315 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5316 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5317 | else | |
5318 | glyph = NULL; | |
5319 | ||
5320 | return glyph; | |
5321 | } | |
5322 | ||
5323 | ||
7ab12479 JB |
5324 | static int |
5325 | save_window_save (window, vector, i) | |
5326 | Lisp_Object window; | |
5327 | struct Lisp_Vector *vector; | |
5328 | int i; | |
5329 | { | |
5330 | register struct saved_window *p; | |
5331 | register struct window *w; | |
5332 | register Lisp_Object tem; | |
5333 | ||
265a9e55 | 5334 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5335 | { |
5336 | p = SAVED_WINDOW_N (vector, i); | |
5337 | w = XWINDOW (window); | |
5338 | ||
d834a2e9 | 5339 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
5340 | p->window = window; |
5341 | p->buffer = w->buffer; | |
5342 | p->left = w->left; | |
5343 | p->top = w->top; | |
5344 | p->width = w->width; | |
5345 | p->height = w->height; | |
5346 | p->hscroll = w->hscroll; | |
ea68264b | 5347 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5348 | p->display_table = w->display_table; |
a1d58e5b GM |
5349 | p->orig_top = w->orig_top; |
5350 | p->orig_height = w->orig_height; | |
265a9e55 | 5351 | if (!NILP (w->buffer)) |
7ab12479 JB |
5352 | { |
5353 | /* Save w's value of point in the window configuration. | |
5354 | If w is the selected window, then get the value of point | |
5355 | from the buffer; pointm is garbage in the selected window. */ | |
5356 | if (EQ (window, selected_window)) | |
5357 | { | |
5358 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5359 | set_marker_both (p->pointm, w->buffer, |
5360 | BUF_PT (XBUFFER (w->buffer)), | |
5361 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5362 | } |
5363 | else | |
eeb82665 | 5364 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5365 | |
eeb82665 | 5366 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5367 | p->start_at_line_beg = w->start_at_line_beg; |
5368 | ||
5369 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 5370 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5371 | } |
5372 | else | |
5373 | { | |
5374 | p->pointm = Qnil; | |
5375 | p->start = Qnil; | |
5376 | p->mark = Qnil; | |
5377 | p->start_at_line_beg = Qnil; | |
5378 | } | |
5379 | ||
265a9e55 | 5380 | if (NILP (w->parent)) |
7ab12479 JB |
5381 | p->parent = Qnil; |
5382 | else | |
5383 | p->parent = XWINDOW (w->parent)->temslot; | |
5384 | ||
265a9e55 | 5385 | if (NILP (w->prev)) |
7ab12479 JB |
5386 | p->prev = Qnil; |
5387 | else | |
5388 | p->prev = XWINDOW (w->prev)->temslot; | |
5389 | ||
265a9e55 | 5390 | if (!NILP (w->vchild)) |
7ab12479 | 5391 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5392 | if (!NILP (w->hchild)) |
7ab12479 JB |
5393 | i = save_window_save (w->hchild, vector, i); |
5394 | } | |
5395 | ||
5396 | return i; | |
5397 | } | |
5398 | ||
a0d76c27 | 5399 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5400 | Scurrent_window_configuration, 0, 1, 0, |
5401 | doc: /* Return an object representing the current window configuration of FRAME. | |
5402 | If FRAME is nil or omitted, use the selected frame. | |
5403 | This describes the number of windows, their sizes and current buffers, | |
5404 | and for each displayed buffer, where display starts, and the positions of | |
5405 | point and mark. An exception is made for point in the current buffer: | |
5406 | its value is -not- saved. | |
5407 | This also records the currently selected frame, and FRAME's focus | |
5408 | redirection (see `redirect-frame-focus'). */) | |
5409 | (frame) | |
44fa5b1e | 5410 | Lisp_Object frame; |
7ab12479 JB |
5411 | { |
5412 | register Lisp_Object tem; | |
5413 | register int n_windows; | |
5414 | register struct save_window_data *data; | |
da2792e0 | 5415 | register struct Lisp_Vector *vec; |
7ab12479 | 5416 | register int i; |
44fa5b1e | 5417 | FRAME_PTR f; |
43bad991 | 5418 | |
44fa5b1e | 5419 | if (NILP (frame)) |
1ae1a37d | 5420 | frame = selected_frame; |
b7826503 | 5421 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 5422 | f = XFRAME (frame); |
7ab12479 | 5423 | |
44fa5b1e | 5424 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 5425 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
5426 | data = (struct save_window_data *)vec; |
5427 | ||
d834a2e9 KH |
5428 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
5429 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
5430 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 5431 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 5432 | data->selected_frame = selected_frame; |
44fa5b1e | 5433 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5434 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 5435 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 5436 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 5437 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5438 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
5439 | XSETINT (data->min_height, window_min_height); |
5440 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5441 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5442 | data->saved_windows = tem; | |
5443 | for (i = 0; i < n_windows; i++) | |
5444 | XVECTOR (tem)->contents[i] | |
5445 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 5446 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5447 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5448 | return (tem); |
5449 | } | |
5450 | ||
5451 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 PJ |
5452 | 0, UNEVALLED, 0, |
5453 | doc: /* Execute body, preserving window sizes and contents. | |
5454 | Restore which buffer appears in which window, where display starts, | |
5455 | and the value of point and mark for each window. | |
5456 | Also restore the choice of selected window. | |
5457 | Also restore which buffer is current. | |
6924dda6 MB |
5458 | Does not restore the value of point in current buffer. |
5459 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 5460 | (args) |
7ab12479 JB |
5461 | Lisp_Object args; |
5462 | { | |
5463 | register Lisp_Object val; | |
5464 | register int count = specpdl_ptr - specpdl; | |
5465 | ||
5466 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5467 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5468 | val = Fprogn (args); |
5469 | return unbind_to (count, val); | |
5470 | } | |
5500c422 GM |
5471 | |
5472 | \f | |
5473 | /*********************************************************************** | |
5474 | Marginal Areas | |
5475 | ***********************************************************************/ | |
5476 | ||
5477 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5478 | 2, 3, 0, |
fdb82f93 PJ |
5479 | doc: /* Set width of marginal areas of window WINDOW. |
5480 | If window is nil, set margins of the currently selected window. | |
5481 | First parameter LEFT-WIDTH specifies the number of character | |
5482 | cells to reserve for the left marginal area. Second parameter | |
5483 | RIGHT-WIDTH does the same for the right marginal area. | |
5484 | A nil width parameter means no margin. */) | |
5485 | (window, left, right) | |
5500c422 GM |
5486 | Lisp_Object window, left, right; |
5487 | { | |
5488 | struct window *w = decode_window (window); | |
5500c422 GM |
5489 | |
5490 | if (!NILP (left)) | |
b7826503 | 5491 | CHECK_NUMBER_OR_FLOAT (left); |
5500c422 | 5492 | if (!NILP (right)) |
b7826503 | 5493 | CHECK_NUMBER_OR_FLOAT (right); |
5500c422 GM |
5494 | |
5495 | /* Check widths < 0 and translate a zero width to nil. | |
5496 | Margins that are too wide have to be checked elsewhere. */ | |
5497 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5498 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5499 | XSETFASTINT (left, 0); |
5500 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5501 | left = Qnil; | |
5502 | ||
5503 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 5504 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5505 | XSETFASTINT (right, 0); |
5506 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5507 | right = Qnil; | |
5508 | ||
5509 | w->left_margin_width = left; | |
5510 | w->right_margin_width = right; | |
5511 | ||
5512 | ++windows_or_buffers_changed; | |
5513 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5514 | return Qnil; | |
5515 | } | |
5516 | ||
5517 | ||
5518 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5519 | 0, 1, 0, | |
fdb82f93 PJ |
5520 | doc: /* Get width of marginal areas of window WINDOW. |
5521 | If WINDOW is omitted or nil, use the currently selected window. | |
5522 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
5523 | If a marginal area does not exist, its width will be returned | |
5524 | as nil. */) | |
5525 | (window) | |
5500c422 GM |
5526 | Lisp_Object window; |
5527 | { | |
5528 | struct window *w = decode_window (window); | |
5529 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5530 | } | |
5531 | ||
5532 | ||
7ab12479 | 5533 | \f |
5500c422 GM |
5534 | /*********************************************************************** |
5535 | Smooth scrolling | |
5536 | ***********************************************************************/ | |
5537 | ||
5538 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
fdb82f93 PJ |
5539 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
5540 | Use the selected window if WINDOW is nil or omitted. | |
5541 | Value is a multiple of the canonical character height of WINDOW. */) | |
5542 | (window) | |
5500c422 GM |
5543 | Lisp_Object window; |
5544 | { | |
47004952 | 5545 | Lisp_Object result; |
5500c422 GM |
5546 | struct frame *f; |
5547 | struct window *w; | |
5548 | ||
5549 | if (NILP (window)) | |
5550 | window = selected_window; | |
47004952 | 5551 | else |
b7826503 | 5552 | CHECK_WINDOW (window); |
5500c422 GM |
5553 | w = XWINDOW (window); |
5554 | f = XFRAME (w->frame); | |
5555 | ||
5556 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5557 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5558 | else |
47004952 GM |
5559 | result = make_number (0); |
5560 | return result; | |
5500c422 GM |
5561 | } |
5562 | ||
5563 | ||
5564 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 | 5565 | 2, 2, 0, |
fdb82f93 | 5566 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
b0f906c8 EZ |
5567 | WINDOW nil means use the selected window. VSCROLL is a non-negative |
5568 | multiple of the canonical character height of WINDOW. */) | |
fdb82f93 | 5569 | (window, vscroll) |
47004952 | 5570 | Lisp_Object window, vscroll; |
5500c422 GM |
5571 | { |
5572 | struct window *w; | |
5573 | struct frame *f; | |
5574 | ||
5500c422 GM |
5575 | if (NILP (window)) |
5576 | window = selected_window; | |
47004952 | 5577 | else |
b7826503 PJ |
5578 | CHECK_WINDOW (window); |
5579 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
47004952 | 5580 | |
5500c422 GM |
5581 | w = XWINDOW (window); |
5582 | f = XFRAME (w->frame); | |
5583 | ||
5584 | if (FRAME_WINDOW_P (f)) | |
5585 | { | |
5586 | int old_dy = w->vscroll; | |
47004952 GM |
5587 | |
5588 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5589 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5590 | |
5591 | /* Adjust glyph matrix of the frame if the virtual display | |
5592 | area becomes larger than before. */ | |
5593 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5594 | adjust_glyphs (f); | |
5595 | ||
5596 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5597 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5598 | } |
5599 | ||
47004952 | 5600 | return Fwindow_vscroll (window); |
5500c422 GM |
5601 | } |
5602 | ||
7bbb5782 GM |
5603 | \f |
5604 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5605 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5606 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5607 | |
5608 | void | |
f95464e4 | 5609 | foreach_window (f, fn, user_data) |
7bbb5782 | 5610 | struct frame *f; |
f95464e4 GM |
5611 | int (* fn) P_ ((struct window *, void *)); |
5612 | void *user_data; | |
7bbb5782 | 5613 | { |
f95464e4 | 5614 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5615 | } |
5616 | ||
5617 | ||
5618 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5619 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5620 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5621 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5622 | |
67492200 | 5623 | static int |
f95464e4 | 5624 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5625 | struct window *w; |
f95464e4 GM |
5626 | int (* fn) P_ ((struct window *, void *)); |
5627 | void *user_data; | |
7bbb5782 | 5628 | { |
67492200 GM |
5629 | int cont; |
5630 | ||
5631 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5632 | { |
5633 | if (!NILP (w->hchild)) | |
f95464e4 | 5634 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5635 | else if (!NILP (w->vchild)) |
f95464e4 | 5636 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
0f532a9a GM |
5637 | else |
5638 | cont = fn (w, user_data); | |
7bbb5782 GM |
5639 | |
5640 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5641 | } | |
67492200 GM |
5642 | |
5643 | return cont; | |
7bbb5782 GM |
5644 | } |
5645 | ||
5646 | ||
6d194a45 | 5647 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 5648 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5649 | the window start. */ |
5650 | ||
67492200 | 5651 | static int |
7bbb5782 GM |
5652 | freeze_window_start (w, freeze_p) |
5653 | struct window *w; | |
f95464e4 | 5654 | void *freeze_p; |
7bbb5782 GM |
5655 | { |
5656 | if (w == XWINDOW (selected_window) | |
5657 | || MINI_WINDOW_P (w) | |
5658 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5659 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5660 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5661 | freeze_p = NULL; |
7bbb5782 | 5662 | |
f95464e4 | 5663 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5664 | return 1; |
7bbb5782 GM |
5665 | } |
5666 | ||
5667 | ||
5668 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5669 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5670 | means freeze the window start. */ | |
5671 | ||
5672 | void | |
5673 | freeze_window_starts (f, freeze_p) | |
5674 | struct frame *f; | |
5675 | int freeze_p; | |
5676 | { | |
cbccabec | 5677 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5678 | } |
5500c422 GM |
5679 | |
5680 | \f | |
5681 | /*********************************************************************** | |
5682 | Initialization | |
5683 | ***********************************************************************/ | |
5684 | ||
cbff28e8 RS |
5685 | /* Return 1 if window configurations C1 and C2 |
5686 | describe the same state of affairs. This is used by Fequal. */ | |
5687 | ||
5688 | int | |
2f8274be | 5689 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5690 | Lisp_Object c1, c2; |
2f8274be | 5691 | int ignore_positions; |
cbff28e8 RS |
5692 | { |
5693 | register struct save_window_data *d1, *d2; | |
5694 | struct Lisp_Vector *sw1, *sw2; | |
5695 | int i; | |
5696 | ||
4d3edcb4 GM |
5697 | if (!WINDOW_CONFIGURATIONP (c1)) |
5698 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5699 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5700 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5701 | ||
cbff28e8 RS |
5702 | d1 = (struct save_window_data *) XVECTOR (c1); |
5703 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5704 | sw1 = XVECTOR (d1->saved_windows); | |
5705 | sw2 = XVECTOR (d2->saved_windows); | |
5706 | ||
5707 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5708 | return 0; | |
5709 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5710 | return 0; | |
5711 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5712 | return 0; | |
5713 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5714 | return 0; | |
5715 | /* Don't compare the current_window field directly. | |
5716 | Instead see w1_is_current and w2_is_current, below. */ | |
5717 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5718 | return 0; | |
2f8274be | 5719 | if (! ignore_positions) |
3f49fddc KS |
5720 | { |
5721 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5722 | return 0; | |
5723 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
5724 | return 0; | |
5725 | } | |
cbff28e8 RS |
5726 | /* Don't compare the root_window field. |
5727 | We don't require the two configurations | |
5728 | to use the same window object, | |
5729 | and the two root windows must be equivalent | |
5730 | if everything else compares equal. */ | |
5731 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5732 | return 0; | |
5733 | if (! EQ (d1->min_width, d2->min_width)) | |
5734 | return 0; | |
5735 | if (! EQ (d1->min_height, d2->min_height)) | |
5736 | return 0; | |
5737 | ||
5738 | /* Verify that the two confis have the same number of windows. */ | |
5739 | if (sw1->size != sw2->size) | |
5740 | return 0; | |
5741 | ||
5742 | for (i = 0; i < sw1->size; i++) | |
5743 | { | |
5744 | struct saved_window *p1, *p2; | |
5745 | int w1_is_current, w2_is_current; | |
5746 | ||
5747 | p1 = SAVED_WINDOW_N (sw1, i); | |
5748 | p2 = SAVED_WINDOW_N (sw2, i); | |
5749 | ||
5750 | /* Verify that the current windows in the two | |
5751 | configurations correspond to each other. */ | |
5752 | w1_is_current = EQ (d1->current_window, p1->window); | |
5753 | w2_is_current = EQ (d2->current_window, p2->window); | |
5754 | ||
5755 | if (w1_is_current != w2_is_current) | |
5756 | return 0; | |
5757 | ||
5758 | /* Verify that the corresponding windows do match. */ | |
5759 | if (! EQ (p1->buffer, p2->buffer)) | |
5760 | return 0; | |
5761 | if (! EQ (p1->left, p2->left)) | |
5762 | return 0; | |
5763 | if (! EQ (p1->top, p2->top)) | |
5764 | return 0; | |
5765 | if (! EQ (p1->width, p2->width)) | |
5766 | return 0; | |
5767 | if (! EQ (p1->height, p2->height)) | |
5768 | return 0; | |
cbff28e8 RS |
5769 | if (! EQ (p1->display_table, p2->display_table)) |
5770 | return 0; | |
5771 | if (! EQ (p1->parent, p2->parent)) | |
5772 | return 0; | |
5773 | if (! EQ (p1->prev, p2->prev)) | |
5774 | return 0; | |
2f8274be RS |
5775 | if (! ignore_positions) |
5776 | { | |
5777 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5778 | return 0; | |
ea68264b GM |
5779 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
5780 | return 0; | |
2f8274be RS |
5781 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
5782 | return 0; | |
5783 | if (NILP (Fequal (p1->start, p2->start))) | |
5784 | return 0; | |
5785 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5786 | return 0; | |
5787 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5788 | return 0; | |
5789 | } | |
cbff28e8 RS |
5790 | } |
5791 | ||
5792 | return 1; | |
5793 | } | |
2f8274be RS |
5794 | |
5795 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5796 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
5797 | doc: /* Compare two window configurations as regards the structure of windows. |
5798 | This function ignores details such as the values of point and mark | |
5799 | and scrolling positions. */) | |
5800 | (x, y) | |
2f8274be RS |
5801 | Lisp_Object x, y; |
5802 | { | |
5803 | if (compare_window_configurations (x, y, 1)) | |
5804 | return Qt; | |
5805 | return Qnil; | |
5806 | } | |
cbff28e8 | 5807 | \f |
dfcf069d | 5808 | void |
7ab12479 JB |
5809 | init_window_once () |
5810 | { | |
1ae1a37d GM |
5811 | struct frame *f = make_terminal_frame (); |
5812 | XSETFRAME (selected_frame, f); | |
5813 | Vterminal_frame = selected_frame; | |
5814 | minibuf_window = f->minibuffer_window; | |
5815 | selected_window = f->selected_window; | |
5816 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5817 | |
5818 | window_initialized = 1; | |
7ab12479 JB |
5819 | } |
5820 | ||
67492200 GM |
5821 | void |
5822 | init_window () | |
5823 | { | |
5824 | Vwindow_list = Qnil; | |
5825 | } | |
5826 | ||
dfcf069d | 5827 | void |
7ab12479 JB |
5828 | syms_of_window () |
5829 | { | |
8a37516b GM |
5830 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5831 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5832 | |
543f5fb1 RS |
5833 | staticpro (&Qwindow_configuration_change_hook); |
5834 | Qwindow_configuration_change_hook | |
5835 | = intern ("window-configuration-change-hook"); | |
5836 | ||
7ab12479 JB |
5837 | Qwindowp = intern ("windowp"); |
5838 | staticpro (&Qwindowp); | |
5839 | ||
3f8ab7bd RS |
5840 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5841 | staticpro (&Qwindow_configuration_p); | |
5842 | ||
806b4d9b JB |
5843 | Qwindow_live_p = intern ("window-live-p"); |
5844 | staticpro (&Qwindow_live_p); | |
605be8af | 5845 | |
2cccc823 | 5846 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5847 | staticpro (&Qtemp_buffer_show_hook); |
5848 | ||
67492200 | 5849 | staticpro (&Vwindow_list); |
8bfb170b KS |
5850 | |
5851 | minibuf_selected_window = Qnil; | |
3dbab091 | 5852 | staticpro (&minibuf_selected_window); |
67492200 | 5853 | |
7ab12479 | 5854 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
5855 | doc: /* Non-nil means call as function to display a help buffer. |
5856 | The function is called with one argument, the buffer to be displayed. | |
5857 | Used by `with-output-to-temp-buffer'. | |
5858 | If this function is used, then it must do the entire job of showing | |
5859 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
5860 | Vtemp_buffer_show_function = Qnil; |
5861 | ||
5862 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
5863 | doc: /* If non-nil, function to call to handle `display-buffer'. |
5864 | It will receive two args, the buffer and a flag which if non-nil means | |
5865 | that the currently selected window is not acceptable. | |
5866 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' | |
5867 | work using this function. */); | |
7ab12479 JB |
5868 | Vdisplay_buffer_function = Qnil; |
5869 | ||
6529ed87 | 5870 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
5871 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
5872 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
5873 | Veven_window_heights = Qt; |
5874 | ||
7ab12479 | 5875 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 5876 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
5877 | Vminibuf_scroll_window = Qnil; |
5878 | ||
cc91894c | 5879 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 5880 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
5881 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
5882 | is displayed in the `mode-line' face. */); | |
5883 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 5884 | |
7ab12479 | 5885 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 5886 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
5887 | Vother_window_scroll_buffer = Qnil; |
5888 | ||
44fa5b1e | 5889 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 5890 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 5891 | pop_up_frames = 0; |
7ab12479 | 5892 | |
9c3da604 | 5893 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
5894 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
5895 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
5896 | display_buffer_reuse_frames = 0; |
5897 | ||
44fa5b1e | 5898 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
5899 | doc: /* Function to call to handle automatic new frame creation. |
5900 | It is called with no arguments and should return a newly created frame. | |
5901 | ||
5902 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
5903 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 5904 | Vpop_up_frame_function = Qnil; |
7ab12479 | 5905 | |
a90712c2 | 5906 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 PJ |
5907 | doc: /* *List of buffer names that should have their own special frames. |
5908 | Displaying a buffer whose name is in this list makes a special frame for it | |
5909 | using `special-display-function'. See also `special-display-regexps'. | |
5910 | ||
5911 | An element of the list can be a list instead of just a string. | |
5912 | There are two ways to use a list as an element: | |
5913 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
5914 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5915 | In the latter case, FUNCTION is called with BUFFER as the first argument, | |
5916 | followed by OTHER-ARGS--it can display BUFFER in any way it likes. | |
5917 | All this is done by the function found in `special-display-function'. | |
5918 | ||
5919 | If this variable appears \"not to work\", because you add a name to it | |
5920 | but that buffer still appears in the selected window, look at the | |
5921 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5922 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5923 | Vspecial_display_buffer_names = Qnil; |
5924 | ||
5925 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 PJ |
5926 | doc: /* *List of regexps saying which buffers should have their own special frames. |
5927 | If a buffer name matches one of these regexps, it gets its own frame. | |
5928 | Displaying a buffer whose name is in this list makes a special frame for it | |
5929 | using `special-display-function'. | |
5930 | ||
5931 | An element of the list can be a list instead of just a string. | |
5932 | There are two ways to use a list as an element: | |
5933 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
5934 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
5935 | In the latter case, FUNCTION is called with the buffer as first argument, | |
5936 | followed by OTHER-ARGS--it can display the buffer in any way it likes. | |
5937 | All this is done by the function found in `special-display-function'. | |
5938 | ||
5939 | If this variable appears \"not to work\", because you add a regexp to it | |
5940 | but the matching buffers still appear in the selected window, look at the | |
5941 | values of `same-window-buffer-names' and `same-window-regexps'. | |
5942 | Those variables take precedence over this one. */); | |
a90712c2 RS |
5943 | Vspecial_display_regexps = Qnil; |
5944 | ||
5945 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
5946 | doc: /* Function to call to make a new frame for a special buffer. |
5947 | It is called with two arguments, the buffer and optional buffer specific | |
5948 | data, and should return a window displaying that buffer. | |
5949 | The default value makes a separate frame for the buffer, | |
5950 | using `special-display-frame-alist' to specify the frame parameters. | |
5951 | ||
5952 | A buffer is special if its is listed in `special-display-buffer-names' | |
5953 | or matches a regexp in `special-display-regexps'. */); | |
a90712c2 RS |
5954 | Vspecial_display_function = Qnil; |
5955 | ||
855d8627 | 5956 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
5957 | doc: /* *List of buffer names that should appear in the selected window. |
5958 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
5959 | switches to it in the selected window, rather than making it appear | |
5960 | in some other window. | |
5961 | ||
5962 | An element of the list can be a cons cell instead of just a string. | |
5963 | Then the car must be a string, which specifies the buffer name. | |
5964 | This is for compatibility with `special-display-buffer-names'; | |
5965 | the cdr of the cons cell is ignored. | |
5966 | ||
5967 | See also `same-window-regexps'. */); | |
855d8627 RS |
5968 | Vsame_window_buffer_names = Qnil; |
5969 | ||
5970 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
5971 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
5972 | If a buffer name matches one of these regexps, then displaying it | |
5973 | using `display-buffer' or `pop-to-buffer' switches to it | |
5974 | in the selected window, rather than making it appear in some other window. | |
5975 | ||
5976 | An element of the list can be a cons cell instead of just a string. | |
5977 | Then the car must be a string, which specifies the buffer name. | |
5978 | This is for compatibility with `special-display-buffer-names'; | |
5979 | the cdr of the cons cell is ignored. | |
5980 | ||
5981 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
5982 | Vsame_window_regexps = Qnil; |
5983 | ||
7ab12479 | 5984 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 5985 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
5986 | pop_up_windows = 1; |
5987 | ||
5988 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 5989 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
5990 | next_screen_context_lines = 2; |
5991 | ||
5992 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
fdb82f93 PJ |
5993 | doc: /* *display-buffer would prefer to split the largest window if this large. |
5994 | If there is only one window, it is split regardless of this value. */); | |
7ab12479 JB |
5995 | split_height_threshold = 500; |
5996 | ||
5997 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 5998 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
5999 | window_min_height = 4; |
6000 | ||
6001 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 6002 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
6003 | window_min_width = 10; |
6004 | ||
5500c422 GM |
6005 | DEFVAR_LISP ("scroll-preserve-screen-position", |
6006 | &Vscroll_preserve_screen_position, | |
fdb82f93 | 6007 | doc: /* *Non-nil means scroll commands move point to keep its screen line unchanged. */); |
5500c422 | 6008 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6009 | |
543f5fb1 RS |
6010 | DEFVAR_LISP ("window-configuration-change-hook", |
6011 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
6012 | doc: /* Functions to call when window configuration changes. |
6013 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
6014 | Vwindow_configuration_change_hook = Qnil; |
6015 | ||
b0b7ed0e | 6016 | DEFVAR_BOOL ("window-size-fixed", &window_size_fixed, |
fdb82f93 PJ |
6017 | doc: /* Non-nil in a buffer means windows displaying the buffer are fixed-size. |
6018 | Emacs won't change the size of any window displaying that buffer, | |
6019 | unless you explicitly change the size, or Emacs has no other choice. | |
6020 | This variable automatically becomes buffer-local when set. */); | |
b0b7ed0e GM |
6021 | Fmake_variable_buffer_local (Qwindow_size_fixed); |
6022 | window_size_fixed = 0; | |
6023 | ||
7ab12479 JB |
6024 | defsubr (&Sselected_window); |
6025 | defsubr (&Sminibuffer_window); | |
6026 | defsubr (&Swindow_minibuffer_p); | |
6027 | defsubr (&Swindowp); | |
806b4d9b | 6028 | defsubr (&Swindow_live_p); |
7ab12479 JB |
6029 | defsubr (&Spos_visible_in_window_p); |
6030 | defsubr (&Swindow_buffer); | |
6031 | defsubr (&Swindow_height); | |
6032 | defsubr (&Swindow_width); | |
6033 | defsubr (&Swindow_hscroll); | |
6034 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6035 | defsubr (&Swindow_redisplay_end_trigger); |
6036 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6037 | defsubr (&Swindow_edges); |
d5783c40 JB |
6038 | defsubr (&Scoordinates_in_window_p); |
6039 | defsubr (&Swindow_at); | |
7ab12479 JB |
6040 | defsubr (&Swindow_point); |
6041 | defsubr (&Swindow_start); | |
6042 | defsubr (&Swindow_end); | |
6043 | defsubr (&Sset_window_point); | |
6044 | defsubr (&Sset_window_start); | |
6045 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6046 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6047 | defsubr (&Swindow_display_table); |
6048 | defsubr (&Sset_window_display_table); | |
6049 | defsubr (&Snext_window); | |
6050 | defsubr (&Sprevious_window); | |
6051 | defsubr (&Sother_window); | |
6052 | defsubr (&Sget_lru_window); | |
6053 | defsubr (&Sget_largest_window); | |
6054 | defsubr (&Sget_buffer_window); | |
6055 | defsubr (&Sdelete_other_windows); | |
6056 | defsubr (&Sdelete_windows_on); | |
6057 | defsubr (&Sreplace_buffer_in_windows); | |
6058 | defsubr (&Sdelete_window); | |
6059 | defsubr (&Sset_window_buffer); | |
6060 | defsubr (&Sselect_window); | |
4628f7a4 EN |
6061 | defsubr (&Sspecial_display_p); |
6062 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
6063 | defsubr (&Sdisplay_buffer); |
6064 | defsubr (&Ssplit_window); | |
6065 | defsubr (&Senlarge_window); | |
6066 | defsubr (&Sshrink_window); | |
6067 | defsubr (&Sscroll_up); | |
6068 | defsubr (&Sscroll_down); | |
6069 | defsubr (&Sscroll_left); | |
6070 | defsubr (&Sscroll_right); | |
ccd0664b | 6071 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6072 | defsubr (&Sscroll_other_window); |
fa832261 | 6073 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6074 | defsubr (&Srecenter); |
81fe0836 | 6075 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6076 | defsubr (&Smove_to_window_line); |
6077 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6078 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6079 | defsubr (&Sset_window_configuration); |
6080 | defsubr (&Scurrent_window_configuration); | |
6081 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
6082 | defsubr (&Sset_window_margins); |
6083 | defsubr (&Swindow_margins); | |
6084 | defsubr (&Swindow_vscroll); | |
6085 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6086 | defsubr (&Scompare_window_configurations); |
67492200 | 6087 | defsubr (&Swindow_list); |
7ab12479 JB |
6088 | } |
6089 | ||
dfcf069d | 6090 | void |
7ab12479 JB |
6091 | keys_of_window () |
6092 | { | |
6093 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
6094 | initial_define_key (control_x_map, '2', "split-window"); | |
6095 | initial_define_key (control_x_map, '0', "delete-window"); | |
6096 | initial_define_key (control_x_map, 'o', "other-window"); | |
6097 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
6098 | initial_define_key (control_x_map, '<', "scroll-left"); | |
6099 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6100 | ||
6101 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
6102 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
6103 | initial_define_key (meta_map, 'v', "scroll-down"); | |
6104 | ||
6105 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
6106 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
6107 | } |