Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
e68def1e | 3 | Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000, 2001, 2002, 2003 |
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 | |
e0f712ba | 47 | #ifdef MAC_OS |
1a578e9b AC |
48 | #include "macterm.h" |
49 | #endif | |
5500c422 | 50 | |
5500c422 | 51 | |
3f8ab7bd | 52 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
90647b07 | 53 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 54 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 55 | |
521b203e | 56 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 57 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
58 | static int count_windows P_ ((struct window *)); |
59 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
60 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
61 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
62 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 63 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 64 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 65 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 66 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 67 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
f95284d2 | 68 | static void enlarge_window P_ ((Lisp_Object, int, int, int)); |
67492200 | 69 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 70 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
71 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
72 | Lisp_Object)); | |
67492200 GM |
73 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
74 | Lisp_Object, int)); | |
75 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
76 | Lisp_Object *)); | |
f95464e4 GM |
77 | static int foreach_window_1 P_ ((struct window *, |
78 | int (* fn) (struct window *, void *), | |
79 | void *)); | |
cd2904bd | 80 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 81 | |
b0b7ed0e GM |
82 | /* The value of `window-size-fixed'. */ |
83 | ||
84 | int window_size_fixed; | |
85 | ||
7ab12479 JB |
86 | /* This is the window in which the terminal's cursor should |
87 | be left when nothing is being done with it. This must | |
88 | always be a leaf window, and its buffer is selected by | |
89 | the top level editing loop at the end of each command. | |
90 | ||
91 | This value is always the same as | |
44fa5b1e | 92 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
93 | |
94 | Lisp_Object selected_window; | |
95 | ||
67492200 GM |
96 | /* A list of all windows for use by next_window and Fwindow_list. |
97 | Functions creating or deleting windows should invalidate this cache | |
98 | by setting it to nil. */ | |
99 | ||
100 | Lisp_Object Vwindow_list; | |
101 | ||
5500c422 GM |
102 | /* The mini-buffer window of the selected frame. |
103 | Note that you cannot test for mini-bufferness of an arbitrary window | |
104 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 105 | the selected window. */ |
5500c422 | 106 | |
7ab12479 JB |
107 | Lisp_Object minibuf_window; |
108 | ||
3f49fddc KS |
109 | /* Non-nil means it is the window whose mode line should be |
110 | shown as the selected window when the minibuffer is selected. */ | |
111 | ||
3dbab091 | 112 | Lisp_Object minibuf_selected_window; |
3f49fddc | 113 | |
7ab12479 | 114 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
115 | when the mini-buffer is selected. */ |
116 | ||
7ab12479 JB |
117 | Lisp_Object Vminibuf_scroll_window; |
118 | ||
119 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 120 | |
7ab12479 JB |
121 | Lisp_Object Vother_window_scroll_buffer; |
122 | ||
7ab12479 | 123 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 124 | |
7ab12479 JB |
125 | Lisp_Object Vtemp_buffer_show_function; |
126 | ||
cc91894c KS |
127 | /* Non-zero means to use mode-line-inactive face in all windows but the |
128 | selected-window and the minibuffer-scroll-window when the | |
129 | minibuffer is active. */ | |
130 | int mode_line_in_non_selected_windows; | |
26124d5e | 131 | |
7ab12479 | 132 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 133 | |
31ade731 SM |
134 | EMACS_INT window_min_height; |
135 | EMACS_INT window_min_width; | |
7ab12479 JB |
136 | |
137 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 138 | |
7ab12479 JB |
139 | int pop_up_windows; |
140 | ||
44fa5b1e | 141 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 142 | |
44fa5b1e | 143 | int pop_up_frames; |
7ab12479 | 144 | |
9c3da604 GM |
145 | /* Nonzero means reuse existing frames for displaying buffers. */ |
146 | ||
147 | int display_buffer_reuse_frames; | |
148 | ||
7ab12479 | 149 | /* Non-nil means use this function instead of default */ |
5500c422 | 150 | |
44fa5b1e | 151 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
152 | |
153 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 154 | |
7ab12479 JB |
155 | Lisp_Object Vdisplay_buffer_function; |
156 | ||
6529ed87 GM |
157 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
158 | ||
159 | Lisp_Object Veven_window_heights; | |
160 | ||
a90712c2 | 161 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 162 | |
a90712c2 RS |
163 | Lisp_Object Vspecial_display_buffer_names; |
164 | ||
165 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 166 | |
a90712c2 RS |
167 | Lisp_Object Vspecial_display_regexps; |
168 | ||
169 | /* Function to pop up a special frame. */ | |
5500c422 | 170 | |
a90712c2 RS |
171 | Lisp_Object Vspecial_display_function; |
172 | ||
855d8627 | 173 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 174 | |
855d8627 RS |
175 | Lisp_Object Vsame_window_buffer_names; |
176 | ||
177 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 178 | |
855d8627 RS |
179 | Lisp_Object Vsame_window_regexps; |
180 | ||
a58ec57d | 181 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 182 | |
a58ec57d RS |
183 | Lisp_Object Qtemp_buffer_show_hook; |
184 | ||
37962e60 | 185 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 186 | if that window is more than this high. */ |
5500c422 | 187 | |
31ade731 | 188 | EMACS_INT split_height_threshold; |
7ab12479 JB |
189 | |
190 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 191 | |
31ade731 | 192 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
193 | |
194 | /* Incremented for each window created. */ | |
5500c422 | 195 | |
7ab12479 JB |
196 | static int sequence_number; |
197 | ||
5b03d3c0 | 198 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 199 | |
5b03d3c0 RS |
200 | static int window_initialized; |
201 | ||
543f5fb1 | 202 | /* Hook to run when window config changes. */ |
5500c422 | 203 | |
543f5fb1 RS |
204 | Lisp_Object Qwindow_configuration_change_hook; |
205 | Lisp_Object Vwindow_configuration_change_hook; | |
206 | ||
9317a85d RS |
207 | /* Nonzero means scroll commands try to put point |
208 | at the same screen height as previously. */ | |
9317a85d | 209 | |
5500c422 GM |
210 | Lisp_Object Vscroll_preserve_screen_position; |
211 | ||
212 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 213 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 214 | static int inhibit_frame_unsplittable; |
5500c422 | 215 | #endif /* 0 */ |
7d601aaa | 216 | |
31ade731 | 217 | extern EMACS_INT scroll_margin; |
9317a85d | 218 | |
dba06815 | 219 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
220 | \f |
221 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
222 | doc: /* Returns t if OBJECT is a window. */) |
223 | (object) | |
413430c5 | 224 | Lisp_Object object; |
7ab12479 | 225 | { |
413430c5 | 226 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
227 | } |
228 | ||
806b4d9b | 229 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 230 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
231 | (object) |
232 | Lisp_Object object; | |
605be8af | 233 | { |
9e571f49 | 234 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
235 | } |
236 | ||
7ab12479 JB |
237 | Lisp_Object |
238 | make_window () | |
239 | { | |
cffec418 | 240 | Lisp_Object val; |
7ab12479 | 241 | register struct window *p; |
cffec418 | 242 | |
26605be9 | 243 | p = allocate_window (); |
d834a2e9 | 244 | XSETFASTINT (p->sequence_number, ++sequence_number); |
949cf20f KS |
245 | XSETFASTINT (p->left_col, 0); |
246 | XSETFASTINT (p->top_line, 0); | |
247 | XSETFASTINT (p->total_lines, 0); | |
248 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 249 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 250 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 251 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
252 | p->start = Fmake_marker (); |
253 | p->pointm = Fmake_marker (); | |
d834a2e9 | 254 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 255 | p->frame = Qnil; |
7ab12479 JB |
256 | p->display_table = Qnil; |
257 | p->dedicated = Qnil; | |
5500c422 GM |
258 | p->pseudo_window_p = 0; |
259 | bzero (&p->cursor, sizeof (p->cursor)); | |
260 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
261 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
262 | p->desired_matrix = p->current_matrix = 0; | |
263 | p->phys_cursor_type = -1; | |
4b26579e | 264 | p->phys_cursor_width = -1; |
5500c422 GM |
265 | p->must_be_updated_p = 0; |
266 | XSETFASTINT (p->window_end_vpos, 0); | |
267 | XSETFASTINT (p->window_end_pos, 0); | |
268 | p->window_end_valid = Qnil; | |
269 | p->vscroll = 0; | |
cffec418 | 270 | XSETWINDOW (val, p); |
5500c422 | 271 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 272 | p->frozen_window_start_p = 0; |
6b448755 RS |
273 | p->height_fixed_p = 0; |
274 | p->last_cursor_off_p = p->cursor_off_p = 0; | |
949cf20f KS |
275 | p->left_margin_cols = Qnil; |
276 | p->right_margin_cols = Qnil; | |
277 | p->left_fringe_width = Qnil; | |
278 | p->right_fringe_width = Qnil; | |
279 | p->fringes_outside_margins = Qnil; | |
280 | p->scroll_bar_width = Qnil; | |
281 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
282 | |
283 | Vwindow_list = Qnil; | |
7ab12479 JB |
284 | return val; |
285 | } | |
286 | ||
287 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
288 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
289 | () | |
7ab12479 JB |
290 | { |
291 | return selected_window; | |
292 | } | |
293 | ||
83762ba4 | 294 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
295 | doc: /* Return the window used now for minibuffers. |
296 | If the optional argument FRAME is specified, return the minibuffer window | |
297 | used by that frame. */) | |
298 | (frame) | |
83762ba4 | 299 | Lisp_Object frame; |
7ab12479 | 300 | { |
83762ba4 | 301 | if (NILP (frame)) |
1ae1a37d | 302 | frame = selected_frame; |
b7826503 | 303 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 304 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
305 | } |
306 | ||
605be8af | 307 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
fdb82f93 PJ |
308 | doc: /* Returns non-nil if WINDOW is a minibuffer window. */) |
309 | (window) | |
7ab12479 JB |
310 | Lisp_Object window; |
311 | { | |
312 | struct window *w = decode_window (window); | |
53bb6b99 | 313 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
314 | } |
315 | ||
316 | ||
7ab12479 | 317 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 PJ |
318 | Spos_visible_in_window_p, 0, 3, 0, |
319 | doc: /* Return t if position POS is currently on the frame in WINDOW. | |
320 | Return nil if that position is scrolled vertically out of view. | |
321 | If a character is only partially visible, nil is returned, unless the | |
322 | optional argument PARTIALLY is non-nil. | |
323 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. */) | |
324 | (pos, window, partially) | |
5cdb3cf3 | 325 | Lisp_Object pos, window, partially; |
7ab12479 JB |
326 | { |
327 | register struct window *w; | |
7ab12479 JB |
328 | register int posint; |
329 | register struct buffer *buf; | |
9a132b1f GM |
330 | struct text_pos top; |
331 | Lisp_Object in_window; | |
53bb6b99 | 332 | int fully_p; |
7ab12479 | 333 | |
f28b75a9 MB |
334 | w = decode_window (window); |
335 | buf = XBUFFER (w->buffer); | |
336 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
337 | ||
338 | if (!NILP (pos)) | |
7ab12479 | 339 | { |
b7826503 | 340 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
341 | posint = XINT (pos); |
342 | } | |
f28b75a9 MB |
343 | else if (w == XWINDOW (selected_window)) |
344 | posint = PT; | |
345 | else | |
346 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 347 | |
53bb6b99 | 348 | /* If position is above window start, it's not visible. */ |
5500c422 | 349 | if (posint < CHARPOS (top)) |
9a132b1f GM |
350 | in_window = Qnil; |
351 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
81e4d465 MB |
352 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) |
353 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
81e4d465 | 354 | { |
53bb6b99 GM |
355 | /* If frame is up-to-date, and POSINT is < window end pos, use |
356 | that info. This doesn't work for POSINT == end pos, because | |
357 | the window end pos is actually the position _after_ the last | |
358 | char in the window. */ | |
5cdb3cf3 | 359 | if (NILP (partially)) |
53bb6b99 | 360 | { |
5cdb3cf3 | 361 | pos_visible_p (w, posint, &fully_p, NILP (partially)); |
53bb6b99 GM |
362 | in_window = fully_p ? Qt : Qnil; |
363 | } | |
81e4d465 | 364 | else |
53bb6b99 | 365 | in_window = Qt; |
81e4d465 | 366 | } |
9a132b1f GM |
367 | else if (posint > BUF_ZV (buf)) |
368 | in_window = Qnil; | |
369 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
370 | /* If window start is out of range, do something reasonable. */ | |
371 | in_window = Qnil; | |
7ab12479 JB |
372 | else |
373 | { | |
5cdb3cf3 MB |
374 | if (pos_visible_p (w, posint, &fully_p, NILP (partially))) |
375 | in_window = !NILP (partially) || fully_p ? Qt : Qnil; | |
81e4d465 MB |
376 | else |
377 | in_window = Qnil; | |
7ab12479 | 378 | } |
9a132b1f GM |
379 | |
380 | return in_window; | |
7ab12479 | 381 | } |
53bb6b99 | 382 | |
7ab12479 JB |
383 | \f |
384 | static struct window * | |
385 | decode_window (window) | |
386 | register Lisp_Object window; | |
387 | { | |
265a9e55 | 388 | if (NILP (window)) |
7ab12479 JB |
389 | return XWINDOW (selected_window); |
390 | ||
b7826503 | 391 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
392 | return XWINDOW (window); |
393 | } | |
394 | ||
395 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
fdb82f93 PJ |
396 | doc: /* Return the buffer that WINDOW is displaying. */) |
397 | (window) | |
7ab12479 JB |
398 | Lisp_Object window; |
399 | { | |
400 | return decode_window (window)->buffer; | |
401 | } | |
402 | ||
403 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
404 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
405 | (window) | |
7ab12479 JB |
406 | Lisp_Object window; |
407 | { | |
949cf20f | 408 | return decode_window (window)->total_lines; |
7ab12479 JB |
409 | } |
410 | ||
411 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
412 | doc: /* Return the number of display columns in WINDOW. |
413 | This is the width that is usable columns available for text in WINDOW. | |
414 | If you want to find out how many columns WINDOW takes up, | |
415 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
416 | (window) | |
7ab12479 JB |
417 | Lisp_Object window; |
418 | { | |
949cf20f | 419 | return make_number (window_box_text_cols (decode_window (window))); |
7ab12479 JB |
420 | } |
421 | ||
422 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
423 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
424 | (window) | |
7ab12479 JB |
425 | Lisp_Object window; |
426 | { | |
427 | return decode_window (window)->hscroll; | |
428 | } | |
429 | ||
430 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 431 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
ebadb1e4 EZ |
432 | NCOL should be zero or positive. |
433 | ||
434 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
435 | window so that the location of point becomes invisible. */) | |
fdb82f93 | 436 | (window, ncol) |
ea68264b | 437 | Lisp_Object window, ncol; |
7ab12479 | 438 | { |
ea68264b GM |
439 | struct window *w = decode_window (window); |
440 | int hscroll; | |
7ab12479 | 441 | |
b7826503 | 442 | CHECK_NUMBER (ncol); |
ea68264b | 443 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 444 | |
ea68264b GM |
445 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
446 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 447 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 448 | |
c67fa410 | 449 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
450 | return ncol; |
451 | } | |
452 | ||
190eb263 RS |
453 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
454 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
455 | doc: /* Return WINDOW's redisplay end trigger value. |
456 | See `set-window-redisplay-end-trigger' for more information. */) | |
457 | (window) | |
190eb263 RS |
458 | Lisp_Object window; |
459 | { | |
460 | return decode_window (window)->redisplay_end_trigger; | |
461 | } | |
462 | ||
463 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
464 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
465 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
466 | VALUE should be a buffer position (typically a marker) or nil. | |
467 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
468 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
469 | with two arguments: WINDOW, and the end trigger value. | |
470 | Afterwards the end-trigger value is reset to nil. */) | |
471 | (window, value) | |
190eb263 RS |
472 | register Lisp_Object window, value; |
473 | { | |
474 | register struct window *w; | |
475 | ||
476 | w = decode_window (window); | |
477 | w->redisplay_end_trigger = value; | |
478 | return value; | |
479 | } | |
480 | ||
7ab12479 | 481 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
482 | doc: /* Return a list of the edge coordinates of WINDOW. |
483 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
484 | RIGHT is one more than the rightmost column used by WINDOW, | |
485 | and BOTTOM is one more than the bottommost row used by WINDOW | |
486 | and its mode-line. */) | |
487 | (window) | |
7ab12479 JB |
488 | Lisp_Object window; |
489 | { | |
490 | register struct window *w = decode_window (window); | |
491 | ||
949cf20f KS |
492 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
493 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
494 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
495 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
496 | Qnil)))); | |
7ab12479 JB |
497 | } |
498 | ||
fbad6f9a | 499 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 500 | If it is not, return ON_NOTHING; |
d5783c40 JB |
501 | if it is in the window's text area, |
502 | set *x and *y to its location relative to the upper left corner | |
503 | of the window, and | |
341f3858 KS |
504 | return ON_TEXT; |
505 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 506 | if it is on the border between the window and its right sibling, |
341f3858 KS |
507 | return ON_VERTICAL_BORDER. |
508 | if it is on the window's top line, return ON_HEADER_LINE; | |
81d189fd | 509 | if it is in left or right fringe of the window, |
341f3858 KS |
510 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
511 | to window-relative coordinates; | |
49b996e7 | 512 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
513 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
514 | to window-relative coordinates. | |
5500c422 GM |
515 | |
516 | X and Y are frame relative pixel coordinates. */ | |
517 | ||
7442878f | 518 | static enum window_part |
d5783c40 JB |
519 | coordinates_in_window (w, x, y) |
520 | register struct window *w; | |
521 | register int *x, *y; | |
522 | { | |
b0228ace GM |
523 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
524 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 525 | enum window_part part; |
949cf20f KS |
526 | int ux = FRAME_COLUMN_WIDTH (f); |
527 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
528 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
529 | /* The width of the area where the vertical line can be dragged. |
530 | (Between mode lines for instance. */ | |
531 | int grabbable_width = ux; | |
949cf20f | 532 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace GM |
533 | |
534 | if (*x < x0 || *x >= x1) | |
535 | return ON_NOTHING; | |
177c0ea7 | 536 | |
466539bc EZ |
537 | /* In what's below, we subtract 1 when computing right_x because we |
538 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
539 | if (w->pseudo_window_p) |
540 | { | |
541 | left_x = 0; | |
949cf20f KS |
542 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
543 | top_y = WINDOW_TOP_EDGE_Y (w); | |
544 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
545 | } |
546 | else | |
547 | { | |
949cf20f KS |
548 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
549 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
550 | top_y = WINDOW_TOP_EDGE_Y (w); | |
551 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 552 | } |
37962e60 | 553 | |
949cf20f KS |
554 | /* Outside any interesting row? */ |
555 | if (*y < top_y || *y >= bottom_y) | |
556 | return ON_NOTHING; | |
557 | ||
1cb794ba GM |
558 | /* On the mode line or header line? If it's near the start of |
559 | the mode or header line of window that's has a horizontal | |
560 | sibling, say it's on the vertical line. That's to be able | |
561 | to resize windows horizontally in case we're using toolkit | |
562 | scroll bars. */ | |
b0228ace | 563 | |
1cb794ba | 564 | if (WINDOW_WANTS_MODELINE_P (w) |
b0228ace GM |
565 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) |
566 | && *y < bottom_y) | |
1cb794ba | 567 | { |
949cf20f KS |
568 | part = ON_MODE_LINE; |
569 | ||
570 | header_vertical_border_check: | |
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. */ | |
949cf20f KS |
575 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
576 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 577 | { |
949cf20f KS |
578 | if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width) |
579 | return ON_VERTICAL_BORDER; | |
b0228ace | 580 | } |
949cf20f | 581 | else |
b0228ace | 582 | { |
949cf20f KS |
583 | if (abs (*x - x1) < grabbable_width) |
584 | return ON_VERTICAL_BORDER; | |
b0228ace | 585 | } |
949cf20f KS |
586 | |
587 | return part; | |
b0228ace | 588 | } |
949cf20f KS |
589 | |
590 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
591 | && *y >= top_y | |
592 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) | |
1cb794ba | 593 | { |
949cf20f KS |
594 | part = ON_HEADER_LINE; |
595 | goto header_vertical_border_check; | |
1cb794ba | 596 | } |
949cf20f KS |
597 | |
598 | /* Outside any interesting column? */ | |
599 | if (*x < left_x || *x > right_x) | |
600 | return ON_NOTHING; | |
601 | ||
602 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
603 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
604 | ||
605 | text_left = window_box_left (w, TEXT_AREA); | |
606 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
607 | ||
608 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 609 | { |
447e9da0 | 610 | if (!w->pseudo_window_p |
949cf20f | 611 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 612 | && !WINDOW_RIGHTMOST_P (w) |
949cf20f KS |
613 | && (abs (*x - right_x) < grabbable_width)) |
614 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 615 | } |
447e9da0 GM |
616 | else |
617 | { | |
618 | /* Need to say "*x > right_x" rather than >=, since on character | |
619 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
620 | if (!w->pseudo_window_p |
621 | && !WINDOW_RIGHTMOST_P (w) | |
622 | && *x > right_x - ux) | |
b0228ace GM |
623 | { |
624 | /* On the border on the right side of the window? Assume that | |
625 | this area begins at RIGHT_X minus a canonical char width. */ | |
949cf20f | 626 | return ON_VERTICAL_BORDER; |
b0228ace | 627 | } |
447e9da0 | 628 | } |
b0228ace | 629 | |
949cf20f KS |
630 | if (*x < text_left) |
631 | { | |
632 | if (lmargin_width > 0 | |
633 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
634 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
635 | : (*x < left_x + lmargin_width))) | |
636 | return ON_LEFT_MARGIN; | |
637 | ||
638 | /* Convert X and Y to window-relative pixel coordinates. */ | |
639 | *x -= left_x; | |
640 | *y -= top_y; | |
641 | return ON_LEFT_FRINGE; | |
642 | } | |
643 | ||
644 | if (*x >= text_right) | |
645 | { | |
646 | if (rmargin_width > 0 | |
647 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
648 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
649 | : (*x >= right_x - rmargin_width))) | |
650 | return ON_RIGHT_MARGIN; | |
651 | ||
652 | /* Convert X and Y to window-relative pixel coordinates. */ | |
653 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
654 | *y -= top_y; | |
655 | return ON_RIGHT_FRINGE; | |
656 | } | |
657 | ||
658 | /* Everything special ruled out - must be on text area */ | |
659 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
660 | *y -= top_y; | |
661 | return ON_TEXT; | |
d5783c40 JB |
662 | } |
663 | ||
b0228ace | 664 | |
d5783c40 | 665 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
666 | Scoordinates_in_window_p, 2, 2, 0, |
667 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
668 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
669 | measured in characters from the upper-left corner of the frame. | |
670 | \(0 . 0) denotes the character in the upper left corner of the | |
671 | frame. | |
672 | If COORDINATES are in the text portion of WINDOW, | |
673 | the coordinates relative to the window are returned. | |
674 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
675 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
676 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
677 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 678 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
679 | `vertical-line' is returned. |
680 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
681 | or `right-margin' is returned. */) | |
fdb82f93 | 682 | (coordinates, window) |
d5783c40 JB |
683 | register Lisp_Object coordinates, window; |
684 | { | |
5500c422 GM |
685 | struct window *w; |
686 | struct frame *f; | |
d5783c40 | 687 | int x, y; |
5500c422 | 688 | Lisp_Object lx, ly; |
d5783c40 | 689 | |
b7826503 | 690 | CHECK_LIVE_WINDOW (window); |
5500c422 GM |
691 | w = XWINDOW (window); |
692 | f = XFRAME (w->frame); | |
b7826503 | 693 | CHECK_CONS (coordinates); |
5500c422 GM |
694 | lx = Fcar (coordinates); |
695 | ly = Fcdr (coordinates); | |
b7826503 PJ |
696 | CHECK_NUMBER_OR_FLOAT (lx); |
697 | CHECK_NUMBER_OR_FLOAT (ly); | |
949cf20f KS |
698 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx); |
699 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly); | |
5500c422 GM |
700 | |
701 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 702 | { |
7442878f | 703 | case ON_NOTHING: |
d5783c40 JB |
704 | return Qnil; |
705 | ||
7442878f GM |
706 | case ON_TEXT: |
707 | /* X and Y are now window relative pixel coordinates. Convert | |
708 | them to canonical char units before returning them. */ | |
949cf20f KS |
709 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
710 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 711 | |
7442878f | 712 | case ON_MODE_LINE: |
d5783c40 | 713 | return Qmode_line; |
37962e60 | 714 | |
7442878f | 715 | case ON_VERTICAL_BORDER: |
e5d77022 | 716 | return Qvertical_line; |
d5783c40 | 717 | |
7442878f | 718 | case ON_HEADER_LINE: |
045dee35 | 719 | return Qheader_line; |
5500c422 | 720 | |
7442878f GM |
721 | case ON_LEFT_FRINGE: |
722 | return Qleft_fringe; | |
177c0ea7 | 723 | |
7442878f GM |
724 | case ON_RIGHT_FRINGE: |
725 | return Qright_fringe; | |
fbad6f9a | 726 | |
49b996e7 GM |
727 | case ON_LEFT_MARGIN: |
728 | return Qleft_margin; | |
177c0ea7 | 729 | |
49b996e7 GM |
730 | case ON_RIGHT_MARGIN: |
731 | return Qright_margin; | |
732 | ||
d5783c40 JB |
733 | default: |
734 | abort (); | |
735 | } | |
736 | } | |
737 | ||
67492200 GM |
738 | |
739 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
740 | Check if window W contains coordinates specified by USER_DATA which |
741 | is actually a pointer to a struct check_window_data CW. | |
742 | ||
743 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
744 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 745 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
746 | zero from this function to stop iterating over windows. */ |
747 | ||
748 | struct check_window_data | |
749 | { | |
750 | Lisp_Object *window; | |
341f3858 KS |
751 | int *x, *y; |
752 | enum window_part *part; | |
f95464e4 | 753 | }; |
67492200 GM |
754 | |
755 | static int | |
f95464e4 | 756 | check_window_containing (w, user_data) |
67492200 | 757 | struct window *w; |
f95464e4 | 758 | void *user_data; |
67492200 | 759 | { |
f95464e4 | 760 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
761 | enum window_part found; |
762 | int continue_p = 1; | |
67492200 | 763 | |
f95464e4 | 764 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 765 | if (found != ON_NOTHING) |
67492200 | 766 | { |
341f3858 | 767 | *cw->part = found; |
f95464e4 | 768 | XSETWINDOW (*cw->window, w); |
7442878f | 769 | continue_p = 0; |
67492200 | 770 | } |
177c0ea7 | 771 | |
7442878f | 772 | return continue_p; |
67492200 GM |
773 | } |
774 | ||
775 | ||
5500c422 | 776 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
777 | return it as a Lisp_Object. |
778 | ||
779 | If X, Y is on one of the window's special `window_part' elements, | |
780 | set *PART to the id of that element, and return X and Y converted | |
781 | to window relative coordinates in WX and WY. | |
782 | ||
341f3858 | 783 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
784 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
785 | ||
786 | This function was previously implemented with a loop cycling over | |
787 | windows with Fnext_window, and starting with the frame's selected | |
788 | window. It turned out that this doesn't work with an | |
789 | implementation of next_window using Vwindow_list, because | |
790 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
791 | tree of F when this function is called asynchronously from | |
792 | note_mouse_highlight. The original loop didn't terminate in this | |
793 | case. */ | |
5500c422 | 794 | |
7ab12479 | 795 | Lisp_Object |
949cf20f | 796 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 797 | struct frame *f; |
7ab12479 | 798 | int x, y; |
341f3858 | 799 | enum window_part *part; |
949cf20f | 800 | int *wx, *wy; |
9ea173e8 | 801 | int tool_bar_p; |
7ab12479 | 802 | { |
67492200 | 803 | Lisp_Object window; |
f95464e4 | 804 | struct check_window_data cw; |
341f3858 KS |
805 | enum window_part dummy; |
806 | ||
807 | if (part == 0) | |
808 | part = &dummy; | |
5500c422 | 809 | |
67492200 | 810 | window = Qnil; |
f95464e4 GM |
811 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
812 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 813 | |
67492200 GM |
814 | /* If not found above, see if it's in the tool bar window, if a tool |
815 | bar exists. */ | |
816 | if (NILP (window) | |
817 | && tool_bar_p | |
818 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 819 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
820 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
821 | != ON_NOTHING)) | |
5500c422 | 822 | { |
341f3858 | 823 | *part = ON_TEXT; |
67492200 | 824 | window = f->tool_bar_window; |
5500c422 | 825 | } |
37962e60 | 826 | |
949cf20f KS |
827 | if (wx) *wx = x; |
828 | if (wy) *wy = y; | |
829 | ||
67492200 | 830 | return window; |
7ab12479 JB |
831 | } |
832 | ||
ab17c3f2 | 833 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
834 | doc: /* Return window containing coordinates X and Y on FRAME. |
835 | If omitted, FRAME defaults to the currently selected frame. | |
836 | The top left corner of the frame is considered to be row 0, | |
837 | column 0. */) | |
838 | (x, y, frame) | |
839 | Lisp_Object x, y, frame; | |
7ab12479 | 840 | { |
5500c422 | 841 | struct frame *f; |
7ab12479 | 842 | |
44fa5b1e | 843 | if (NILP (frame)) |
1ae1a37d | 844 | frame = selected_frame; |
b7826503 | 845 | CHECK_LIVE_FRAME (frame); |
5500c422 | 846 | f = XFRAME (frame); |
7ab12479 | 847 | |
5500c422 | 848 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
849 | CHECK_NUMBER_OR_FLOAT (x); |
850 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 851 | |
177c0ea7 | 852 | return window_from_coordinates (f, |
949cf20f KS |
853 | FRAME_PIXEL_X_FROM_CANON_X (f, x), |
854 | FRAME_PIXEL_Y_FROM_CANON_Y (f, y), | |
855 | 0, 0, 0, 0); | |
7ab12479 JB |
856 | } |
857 | ||
858 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
859 | doc: /* Return current value of point in WINDOW. |
860 | For a nonselected window, this is the value point would have | |
861 | if that window were selected. | |
862 | ||
863 | Note that, when WINDOW is the selected window and its buffer | |
864 | is also currently selected, the value returned is the same as (point). | |
865 | It would be more strictly correct to return the `top-level' value | |
866 | of point, outside of any save-excursion forms. | |
867 | But that is hard to define. */) | |
868 | (window) | |
7ab12479 JB |
869 | Lisp_Object window; |
870 | { | |
871 | register struct window *w = decode_window (window); | |
872 | ||
873 | if (w == XWINDOW (selected_window) | |
874 | && current_buffer == XBUFFER (w->buffer)) | |
875 | return Fpoint (); | |
876 | return Fmarker_position (w->pointm); | |
877 | } | |
878 | ||
879 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
880 | doc: /* Return position at which display currently starts in WINDOW. |
881 | This is updated by redisplay or by calling `set-window-start'. */) | |
882 | (window) | |
7ab12479 JB |
883 | Lisp_Object window; |
884 | { | |
885 | return Fmarker_position (decode_window (window)->start); | |
886 | } | |
887 | ||
8646118f RS |
888 | /* This is text temporarily removed from the doc string below. |
889 | ||
fdb82f93 PJ |
890 | This function returns nil if the position is not currently known. |
891 | That happens when redisplay is preempted and doesn't finish. | |
892 | If in that case you want to compute where the end of the window would | |
893 | have been if redisplay had finished, do this: | |
894 | (save-excursion | |
895 | (goto-char (window-start window)) | |
896 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
897 | (point))") */ |
898 | ||
478292ed | 899 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
900 | doc: /* Return position at which display currently ends in WINDOW. |
901 | This is updated by redisplay, when it runs to completion. | |
902 | Simply changing the buffer text or setting `window-start' | |
903 | does not update this value. | |
904 | If UPDATE is non-nil, compute the up-to-date position | |
905 | if it isn't already recorded. */) | |
906 | (window, update) | |
478292ed | 907 | Lisp_Object window, update; |
7ab12479 JB |
908 | { |
909 | Lisp_Object value; | |
910 | struct window *w = decode_window (window); | |
5a41ab94 RS |
911 | Lisp_Object buf; |
912 | ||
913 | buf = w->buffer; | |
b7826503 | 914 | CHECK_BUFFER (buf); |
5a41ab94 | 915 | |
8646118f | 916 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
917 | /* If we don't know the end position, return nil. |
918 | The user can compute it with vertical-motion if he wants to. | |
919 | It would be nicer to do it automatically, | |
920 | but that's so slow that it would probably bother people. */ | |
921 | if (NILP (w->window_end_valid)) | |
922 | return Qnil; | |
8646118f | 923 | #endif |
7250968e | 924 | |
478292ed RS |
925 | if (! NILP (update) |
926 | && ! (! NILP (w->window_end_valid) | |
927 | && XFASTINT (w->last_modified) >= MODIFF)) | |
928 | { | |
cbc099e5 GM |
929 | struct text_pos startp; |
930 | struct it it; | |
99593a9d | 931 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
932 | |
933 | /* In case W->start is out of the range, use something | |
cb795ec4 | 934 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
935 | `-l' containing a call to `rmail' with subsequent other |
936 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 937 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 938 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 939 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 940 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 941 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 942 | else |
cbc099e5 GM |
943 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
944 | ||
945 | /* Cannot use Fvertical_motion because that function doesn't | |
946 | cope with variable-height lines. */ | |
99593a9d GM |
947 | if (b != current_buffer) |
948 | { | |
949 | old_buffer = current_buffer; | |
950 | set_buffer_internal (b); | |
951 | } | |
177c0ea7 | 952 | |
cbc099e5 GM |
953 | start_display (&it, w, startp); |
954 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
955 | if (it.current_y < it.last_visible_y) |
956 | move_it_past_eol (&it); | |
cbc099e5 | 957 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 958 | |
99593a9d GM |
959 | if (old_buffer) |
960 | set_buffer_internal (old_buffer); | |
478292ed RS |
961 | } |
962 | else | |
cbc099e5 | 963 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
964 | |
965 | return value; | |
966 | } | |
967 | ||
968 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
fdb82f93 PJ |
969 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. */) |
970 | (window, pos) | |
7ab12479 JB |
971 | Lisp_Object window, pos; |
972 | { | |
973 | register struct window *w = decode_window (window); | |
974 | ||
b7826503 | 975 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
976 | if (w == XWINDOW (selected_window) |
977 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
978 | Fgoto_char (pos); |
979 | else | |
980 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 981 | |
0685cb3c GM |
982 | /* We have to make sure that redisplay updates the window to show |
983 | the new value of point. */ | |
984 | if (!EQ (window, selected_window)) | |
799417bd | 985 | ++windows_or_buffers_changed; |
177c0ea7 | 986 | |
7ab12479 JB |
987 | return pos; |
988 | } | |
989 | ||
990 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 PJ |
991 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
992 | Optional third arg NOFORCE non-nil inhibits next redisplay | |
993 | from overriding motion of point in order to display at this exact start. */) | |
994 | (window, pos, noforce) | |
7ab12479 JB |
995 | Lisp_Object window, pos, noforce; |
996 | { | |
997 | register struct window *w = decode_window (window); | |
998 | ||
b7826503 | 999 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1000 | set_marker_restricted (w->start, pos, w->buffer); |
1001 | /* this is not right, but much easier than doing what is right. */ | |
1002 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1003 | if (NILP (noforce)) |
7ab12479 JB |
1004 | w->force_start = Qt; |
1005 | w->update_mode_line = Qt; | |
d834a2e9 | 1006 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1007 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1008 | if (!EQ (window, selected_window)) |
1009 | windows_or_buffers_changed++; | |
ce7fae7d | 1010 | |
7ab12479 JB |
1011 | return pos; |
1012 | } | |
1013 | ||
1014 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1015 | 1, 1, 0, | |
fdb82f93 PJ |
1016 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1017 | See also `set-window-dedicated-p'. */) | |
1018 | (window) | |
7ab12479 JB |
1019 | Lisp_Object window; |
1020 | { | |
1021 | return decode_window (window)->dedicated; | |
1022 | } | |
1023 | ||
d207b766 RS |
1024 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1025 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1026 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1027 | If it is dedicated, Emacs will not automatically change | |
1028 | which buffer appears in it. | |
1029 | The second argument is the new value for the dedication flag; | |
1030 | non-nil means yes. */) | |
1031 | (window, arg) | |
1032 | Lisp_Object window, arg; | |
7ab12479 JB |
1033 | { |
1034 | register struct window *w = decode_window (window); | |
1035 | ||
265a9e55 | 1036 | if (NILP (arg)) |
7ab12479 JB |
1037 | w->dedicated = Qnil; |
1038 | else | |
d207b766 | 1039 | w->dedicated = Qt; |
7ab12479 JB |
1040 | |
1041 | return w->dedicated; | |
1042 | } | |
1043 | ||
1044 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1045 | 0, 1, 0, | |
fdb82f93 PJ |
1046 | doc: /* Return the display-table that WINDOW is using. */) |
1047 | (window) | |
7ab12479 JB |
1048 | Lisp_Object window; |
1049 | { | |
1050 | return decode_window (window)->display_table; | |
1051 | } | |
1052 | ||
5500c422 GM |
1053 | /* Get the display table for use on window W. This is either W's |
1054 | display table or W's buffer's display table. Ignore the specified | |
1055 | tables if they are not valid; if no valid table is specified, | |
1056 | return 0. */ | |
7ab12479 | 1057 | |
319315f1 | 1058 | struct Lisp_Char_Table * |
7ab12479 JB |
1059 | window_display_table (w) |
1060 | struct window *w; | |
1061 | { | |
c756cdbe GM |
1062 | struct Lisp_Char_Table *dp = NULL; |
1063 | ||
1064 | if (DISP_TABLE_P (w->display_table)) | |
1065 | dp = XCHAR_TABLE (w->display_table); | |
1066 | else if (BUFFERP (w->buffer)) | |
1067 | { | |
1068 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1069 | |
c756cdbe GM |
1070 | if (DISP_TABLE_P (b->display_table)) |
1071 | dp = XCHAR_TABLE (b->display_table); | |
1072 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1073 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1074 | } | |
171d003c | 1075 | |
c756cdbe | 1076 | return dp; |
7ab12479 JB |
1077 | } |
1078 | ||
3a2712f9 | 1079 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1080 | doc: /* Set WINDOW's display-table to TABLE. */) |
1081 | (window, table) | |
7ab12479 JB |
1082 | register Lisp_Object window, table; |
1083 | { | |
1084 | register struct window *w; | |
7ab12479 JB |
1085 | |
1086 | w = decode_window (window); | |
1087 | w->display_table = table; | |
1088 | return table; | |
1089 | } | |
1090 | \f | |
1091 | /* Record info on buffer window w is displaying | |
1092 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1093 | static void |
7ab12479 JB |
1094 | unshow_buffer (w) |
1095 | register struct window *w; | |
1096 | { | |
12cae7c0 | 1097 | Lisp_Object buf; |
b73ea88e | 1098 | struct buffer *b; |
7ab12479 | 1099 | |
12cae7c0 | 1100 | buf = w->buffer; |
b73ea88e RS |
1101 | b = XBUFFER (buf); |
1102 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1103 | abort (); |
1104 | ||
573f41ab | 1105 | #if 0 |
7ab12479 JB |
1106 | if (w == XWINDOW (selected_window) |
1107 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1108 | /* Do this except when the selected window's buffer | |
1109 | is being removed from some other window. */ | |
573f41ab RS |
1110 | #endif |
1111 | /* last_window_start records the start position that this buffer | |
1112 | had in the last window to be disconnected from it. | |
1113 | Now that this statement is unconditional, | |
1114 | it is possible for the buffer to be displayed in the | |
1115 | selected window, while last_window_start reflects another | |
1116 | window which was recently showing the same buffer. | |
1117 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1118 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1119 | |
1120 | /* Point in the selected window's buffer | |
1121 | is actually stored in that buffer, and the window's pointm isn't used. | |
1122 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1123 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1124 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1125 | && !(WINDOWP (b->last_selected_window) |
1126 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1127 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1128 | temp_set_point_both (b, |
1129 | clip_to_bounds (BUF_BEGV (b), | |
1130 | XMARKER (w->pointm)->charpos, | |
1131 | BUF_ZV (b)), | |
1132 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1133 | marker_byte_position (w->pointm), | |
1134 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1135 | |
8801a864 KR |
1136 | if (WINDOWP (b->last_selected_window) |
1137 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1138 | b->last_selected_window = Qnil; |
7ab12479 JB |
1139 | } |
1140 | ||
1141 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1142 | static void |
7ab12479 JB |
1143 | replace_window (old, replacement) |
1144 | Lisp_Object old, replacement; | |
1145 | { | |
1146 | register Lisp_Object tem; | |
1147 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1148 | ||
44fa5b1e JB |
1149 | /* If OLD is its frame's root_window, then replacement is the new |
1150 | root_window for that frame. */ | |
7ab12479 | 1151 | |
7f4161e0 | 1152 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1153 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1154 | |
949cf20f KS |
1155 | p->left_col = o->left_col; |
1156 | p->top_line = o->top_line; | |
1157 | p->total_cols = o->total_cols; | |
1158 | p->total_lines = o->total_lines; | |
5500c422 GM |
1159 | p->desired_matrix = p->current_matrix = 0; |
1160 | p->vscroll = 0; | |
1161 | bzero (&p->cursor, sizeof (p->cursor)); | |
1162 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1163 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1164 | p->phys_cursor_type = -1; | |
4b26579e | 1165 | p->phys_cursor_width = -1; |
5500c422 GM |
1166 | p->must_be_updated_p = 0; |
1167 | p->pseudo_window_p = 0; | |
1168 | XSETFASTINT (p->window_end_vpos, 0); | |
1169 | XSETFASTINT (p->window_end_pos, 0); | |
1170 | p->window_end_valid = Qnil; | |
7bbb5782 | 1171 | p->frozen_window_start_p = 0; |
949cf20f | 1172 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1173 | |
1174 | p->next = tem = o->next; | |
265a9e55 | 1175 | if (!NILP (tem)) |
7ab12479 JB |
1176 | XWINDOW (tem)->prev = replacement; |
1177 | ||
1178 | p->prev = tem = o->prev; | |
265a9e55 | 1179 | if (!NILP (tem)) |
7ab12479 JB |
1180 | XWINDOW (tem)->next = replacement; |
1181 | ||
1182 | p->parent = tem = o->parent; | |
265a9e55 | 1183 | if (!NILP (tem)) |
7ab12479 JB |
1184 | { |
1185 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1186 | XWINDOW (tem)->vchild = replacement; | |
1187 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1188 | XWINDOW (tem)->hchild = replacement; | |
1189 | } | |
1190 | ||
1191 | /*** Here, if replacement is a vertical combination | |
1192 | and so is its new parent, we should make replacement's | |
1193 | children be children of that parent instead. ***/ | |
1194 | } | |
1195 | ||
1196 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1197 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1198 | (window) | |
7ab12479 | 1199 | register Lisp_Object window; |
543f5fb1 RS |
1200 | { |
1201 | delete_window (window); | |
1202 | ||
1203 | if (! NILP (Vwindow_configuration_change_hook) | |
1204 | && ! NILP (Vrun_hooks)) | |
1205 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1206 | ||
1207 | return Qnil; | |
1208 | } | |
1209 | ||
5e14b1fc | 1210 | void |
543f5fb1 RS |
1211 | delete_window (window) |
1212 | register Lisp_Object window; | |
7ab12479 JB |
1213 | { |
1214 | register Lisp_Object tem, parent, sib; | |
1215 | register struct window *p; | |
1216 | register struct window *par; | |
951f9df5 | 1217 | struct frame *f; |
7ab12479 | 1218 | |
605be8af JB |
1219 | /* Because this function is called by other C code on non-leaf |
1220 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1221 | so we can't decode_window here. */ | |
265a9e55 | 1222 | if (NILP (window)) |
7ab12479 JB |
1223 | window = selected_window; |
1224 | else | |
b7826503 | 1225 | CHECK_WINDOW (window); |
7ab12479 | 1226 | p = XWINDOW (window); |
605be8af JB |
1227 | |
1228 | /* It's okay to delete an already-deleted window. */ | |
1229 | if (NILP (p->buffer) | |
1230 | && NILP (p->hchild) | |
1231 | && NILP (p->vchild)) | |
296b535c | 1232 | return; |
605be8af | 1233 | |
7ab12479 | 1234 | parent = p->parent; |
265a9e55 | 1235 | if (NILP (parent)) |
7ab12479 JB |
1236 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1237 | par = XWINDOW (parent); | |
1238 | ||
1239 | windows_or_buffers_changed++; | |
67492200 | 1240 | Vwindow_list = Qnil; |
951f9df5 GM |
1241 | f = XFRAME (WINDOW_FRAME (p)); |
1242 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1243 | |
605be8af JB |
1244 | /* Are we trying to delete any frame's selected window? */ |
1245 | { | |
192c3131 | 1246 | Lisp_Object swindow, pwindow; |
605be8af | 1247 | |
0def0403 RS |
1248 | /* See if the frame's selected window is either WINDOW |
1249 | or any subwindow of it, by finding all that window's parents | |
1250 | and comparing each one with WINDOW. */ | |
192c3131 | 1251 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1252 | |
192c3131 | 1253 | while (1) |
0def0403 | 1254 | { |
192c3131 RS |
1255 | pwindow = swindow; |
1256 | while (!NILP (pwindow)) | |
1257 | { | |
1258 | if (EQ (window, pwindow)) | |
1259 | break; | |
1260 | pwindow = XWINDOW (pwindow)->parent; | |
1261 | } | |
1262 | ||
1263 | /* If the window being deleted is not a parent of SWINDOW, | |
1264 | then SWINDOW is ok as the new selected window. */ | |
1265 | if (!EQ (window, pwindow)) | |
0def0403 | 1266 | break; |
192c3131 RS |
1267 | /* Otherwise, try another window for SWINDOW. */ |
1268 | swindow = Fnext_window (swindow, Qlambda, Qnil);; | |
1269 | ||
1270 | /* If we get back to the frame's selected window, | |
1271 | it means there was no acceptable alternative, | |
1272 | so we cannot delete. */ | |
1273 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1274 | error ("Cannot delete window"); | |
0def0403 RS |
1275 | } |
1276 | ||
192c3131 RS |
1277 | /* If we need to change SWINDOW, do it. */ |
1278 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1279 | { |
605be8af JB |
1280 | /* If we're about to delete the selected window on the |
1281 | selected frame, then we should use Fselect_window to select | |
1282 | the new window. On the other hand, if we're about to | |
1283 | delete the selected window on any other frame, we shouldn't do | |
1284 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1285 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1286 | Fselect_window (swindow, Qnil); |
605be8af | 1287 | else |
192c3131 | 1288 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1289 | } |
1290 | } | |
7ab12479 JB |
1291 | |
1292 | tem = p->buffer; | |
1293 | /* tem is null for dummy parent windows | |
1294 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1295 | if (!NILP (tem)) |
7ab12479 JB |
1296 | { |
1297 | unshow_buffer (p); | |
1298 | unchain_marker (p->pointm); | |
1299 | unchain_marker (p->start); | |
7ab12479 JB |
1300 | } |
1301 | ||
05e71564 GM |
1302 | /* Free window glyph matrices. It is sure that they are allocated |
1303 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1304 | events and other events that access glyph matrices are not | |
1305 | processed while we are changing them. */ | |
1306 | BLOCK_INPUT; | |
951f9df5 | 1307 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1308 | |
7ab12479 | 1309 | tem = p->next; |
265a9e55 | 1310 | if (!NILP (tem)) |
7ab12479 JB |
1311 | XWINDOW (tem)->prev = p->prev; |
1312 | ||
1313 | tem = p->prev; | |
265a9e55 | 1314 | if (!NILP (tem)) |
7ab12479 JB |
1315 | XWINDOW (tem)->next = p->next; |
1316 | ||
1317 | if (EQ (window, par->hchild)) | |
1318 | par->hchild = p->next; | |
1319 | if (EQ (window, par->vchild)) | |
1320 | par->vchild = p->next; | |
1321 | ||
1322 | /* Find one of our siblings to give our space to. */ | |
1323 | sib = p->prev; | |
265a9e55 | 1324 | if (NILP (sib)) |
7ab12479 JB |
1325 | { |
1326 | /* If p gives its space to its next sibling, that sibling needs | |
1327 | to have its top/left side pulled back to where p's is. | |
1328 | set_window_{height,width} will re-position the sibling's | |
1329 | children. */ | |
1330 | sib = p->next; | |
949cf20f KS |
1331 | XWINDOW (sib)->top_line = p->top_line; |
1332 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1333 | } |
1334 | ||
1335 | /* Stretch that sibling. */ | |
265a9e55 | 1336 | if (!NILP (par->vchild)) |
7ab12479 | 1337 | set_window_height (sib, |
949cf20f | 1338 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1339 | 1); |
265a9e55 | 1340 | if (!NILP (par->hchild)) |
7ab12479 | 1341 | set_window_width (sib, |
949cf20f | 1342 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1343 | 1); |
1344 | ||
1345 | /* If parent now has only one child, | |
1346 | put the child into the parent's place. */ | |
7ab12479 | 1347 | tem = par->hchild; |
265a9e55 | 1348 | if (NILP (tem)) |
7ab12479 | 1349 | tem = par->vchild; |
265a9e55 | 1350 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1351 | replace_window (parent, tem); |
605be8af JB |
1352 | |
1353 | /* Since we may be deleting combination windows, we must make sure that | |
1354 | not only p but all its children have been marked as deleted. */ | |
1355 | if (! NILP (p->hchild)) | |
1356 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1357 | else if (! NILP (p->vchild)) | |
1358 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1359 | ||
1360 | /* Mark this window as deleted. */ | |
1361 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1362 | |
1363 | /* Adjust glyph matrices. */ | |
951f9df5 | 1364 | adjust_glyphs (f); |
05e71564 | 1365 | UNBLOCK_INPUT; |
7ab12479 | 1366 | } |
67492200 GM |
1367 | |
1368 | ||
7ab12479 | 1369 | \f |
67492200 GM |
1370 | /*********************************************************************** |
1371 | Window List | |
1372 | ***********************************************************************/ | |
1373 | ||
f95464e4 GM |
1374 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1375 | pointer. This is a callback function for foreach_window, used in | |
1376 | function window_list. */ | |
67492200 GM |
1377 | |
1378 | static int | |
f95464e4 | 1379 | add_window_to_list (w, user_data) |
67492200 | 1380 | struct window *w; |
f95464e4 | 1381 | void *user_data; |
67492200 | 1382 | { |
f95464e4 | 1383 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1384 | Lisp_Object window; |
1385 | XSETWINDOW (window, w); | |
212116d6 | 1386 | *list = Fcons (window, *list); |
67492200 GM |
1387 | return 1; |
1388 | } | |
1389 | ||
1390 | ||
1391 | /* Return a list of all windows, for use by next_window. If | |
1392 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1393 | list, cache it in Vwindow_list, and return that. */ | |
1394 | ||
1395 | static Lisp_Object | |
1396 | window_list () | |
1397 | { | |
1398 | if (!CONSP (Vwindow_list)) | |
1399 | { | |
1400 | Lisp_Object tail; | |
212116d6 | 1401 | |
67492200 GM |
1402 | Vwindow_list = Qnil; |
1403 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1404 | { |
1405 | Lisp_Object args[2]; | |
1406 | ||
1407 | /* We are visiting windows in canonical order, and add | |
1408 | new windows at the front of args[1], which means we | |
1409 | have to reverse this list at the end. */ | |
1410 | args[1] = Qnil; | |
1411 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1412 | args[0] = Vwindow_list; | |
1413 | args[1] = Fnreverse (args[1]); | |
1414 | Vwindow_list = Fnconc (2, args); | |
1415 | } | |
67492200 | 1416 | } |
177c0ea7 | 1417 | |
67492200 GM |
1418 | return Vwindow_list; |
1419 | } | |
1420 | ||
1421 | ||
118ea242 GM |
1422 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1423 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1424 | |
118ea242 GM |
1425 | MINIBUF t means WINDOW may be minibuffer windows. |
1426 | `lambda' means WINDOW may not be a minibuffer window. | |
1427 | a window means a specific minibuffer window | |
67492200 | 1428 | |
118ea242 GM |
1429 | ALL_FRAMES t means search all frames, |
1430 | nil means search just current frame, | |
1431 | `visible' means search just visible frames, | |
1432 | 0 means search visible and iconified frames, | |
1433 | a window means search the frame that window belongs to, | |
1434 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1435 | |
1436 | static int | |
118ea242 GM |
1437 | candidate_window_p (window, owindow, minibuf, all_frames) |
1438 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1439 | { |
1440 | struct window *w = XWINDOW (window); | |
1441 | struct frame *f = XFRAME (w->frame); | |
1442 | int candidate_p = 1; | |
1443 | ||
1444 | if (!BUFFERP (w->buffer)) | |
1445 | candidate_p = 0; | |
1446 | else if (MINI_WINDOW_P (w) | |
1447 | && (EQ (minibuf, Qlambda) | |
1448 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1449 | { | |
1450 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1451 | If it is a window, consider only that one. */ | |
1452 | candidate_p = 0; | |
1453 | } | |
118ea242 GM |
1454 | else if (EQ (all_frames, Qt)) |
1455 | candidate_p = 1; | |
67492200 | 1456 | else if (NILP (all_frames)) |
118ea242 GM |
1457 | { |
1458 | xassert (WINDOWP (owindow)); | |
1459 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1460 | } | |
67492200 GM |
1461 | else if (EQ (all_frames, Qvisible)) |
1462 | { | |
1463 | FRAME_SAMPLE_VISIBILITY (f); | |
1464 | candidate_p = FRAME_VISIBLE_P (f); | |
1465 | } | |
1466 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1467 | { | |
1468 | FRAME_SAMPLE_VISIBILITY (f); | |
1469 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1470 | } | |
67492200 GM |
1471 | else if (WINDOWP (all_frames)) |
1472 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1473 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1474 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1475 | else if (FRAMEP (all_frames)) |
1476 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1477 | |
1478 | return candidate_p; | |
1479 | } | |
1480 | ||
1481 | ||
1482 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1483 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1484 | ALL_FRAMES. */ | |
1485 | ||
1486 | static void | |
1487 | decode_next_window_args (window, minibuf, all_frames) | |
1488 | Lisp_Object *window, *minibuf, *all_frames; | |
1489 | { | |
1490 | if (NILP (*window)) | |
1491 | *window = selected_window; | |
1492 | else | |
b7826503 | 1493 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1494 | |
67492200 GM |
1495 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1496 | does. */ | |
1497 | if (NILP (*minibuf)) | |
1498 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1499 | else if (!EQ (*minibuf, Qt)) | |
1500 | *minibuf = Qlambda; | |
177c0ea7 | 1501 | |
67492200 GM |
1502 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1503 | => count none of them, or a specific minibuffer window (the | |
1504 | active one) to count. */ | |
1505 | ||
1506 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1507 | if (NILP (*all_frames)) | |
1508 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1509 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1510 | : Qnil); | |
1511 | else if (EQ (*all_frames, Qvisible)) | |
1512 | ; | |
1513 | else if (XFASTINT (*all_frames) == 0) | |
1514 | ; | |
1515 | else if (FRAMEP (*all_frames)) | |
1516 | ; | |
1517 | else if (!EQ (*all_frames, Qt)) | |
1518 | *all_frames = Qnil; | |
177c0ea7 | 1519 | |
67492200 GM |
1520 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1521 | search just current frame, `visible' meaning search just visible | |
1522 | frames, 0 meaning search visible and iconified frames, or a | |
1523 | window, meaning search the frame that window belongs to, or a | |
1524 | frame, meaning consider windows on that frame, only. */ | |
1525 | } | |
1526 | ||
1527 | ||
1528 | /* Return the next or previous window of WINDOW in canonical ordering | |
1529 | of windows. NEXT_P non-zero means return the next window. See the | |
1530 | documentation string of next-window for the meaning of MINIBUF and | |
1531 | ALL_FRAMES. */ | |
1532 | ||
1533 | static Lisp_Object | |
1534 | next_window (window, minibuf, all_frames, next_p) | |
1535 | Lisp_Object window, minibuf, all_frames; | |
1536 | int next_p; | |
1537 | { | |
1538 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1539 | |
67492200 GM |
1540 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1541 | return the first window on the frame. */ | |
1542 | if (FRAMEP (all_frames) | |
1543 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1544 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1545 | |
212116d6 | 1546 | if (next_p) |
67492200 GM |
1547 | { |
1548 | Lisp_Object list; | |
177c0ea7 | 1549 | |
67492200 GM |
1550 | /* Find WINDOW in the list of all windows. */ |
1551 | list = Fmemq (window, window_list ()); | |
1552 | ||
1553 | /* Scan forward from WINDOW to the end of the window list. */ | |
1554 | if (CONSP (list)) | |
1555 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1556 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1557 | break; |
1558 | ||
1559 | /* Scan from the start of the window list up to WINDOW. */ | |
1560 | if (!CONSP (list)) | |
1561 | for (list = Vwindow_list; | |
1562 | CONSP (list) && !EQ (XCAR (list), window); | |
1563 | list = XCDR (list)) | |
118ea242 | 1564 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1565 | break; |
1566 | ||
1567 | if (CONSP (list)) | |
1568 | window = XCAR (list); | |
1569 | } | |
1570 | else | |
1571 | { | |
1572 | Lisp_Object candidate, list; | |
177c0ea7 | 1573 | |
67492200 GM |
1574 | /* Scan through the list of windows for candidates. If there are |
1575 | candidate windows in front of WINDOW, the last one of these | |
1576 | is the one we want. If there are candidates following WINDOW | |
1577 | in the list, again the last one of these is the one we want. */ | |
1578 | candidate = Qnil; | |
1579 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1580 | { | |
1581 | if (EQ (XCAR (list), window)) | |
1582 | { | |
1583 | if (WINDOWP (candidate)) | |
1584 | break; | |
1585 | } | |
118ea242 GM |
1586 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1587 | all_frames)) | |
67492200 GM |
1588 | candidate = XCAR (list); |
1589 | } | |
1590 | ||
1591 | if (WINDOWP (candidate)) | |
1592 | window = candidate; | |
1593 | } | |
1594 | ||
1595 | return window; | |
1596 | } | |
7ab12479 | 1597 | |
7ab12479 | 1598 | |
26f6279d | 1599 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1600 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1601 | If omitted, WINDOW defaults to the selected window. | |
1602 | ||
1603 | Optional second arg MINIBUF t means count the minibuffer window even | |
1604 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1605 | it is active. MINIBUF neither t nor nil means not to count the | |
1606 | minibuffer even if it is active. | |
1607 | ||
1608 | Several frames may share a single minibuffer; if the minibuffer | |
1609 | counts, all windows on all frames that share that minibuffer count | |
1610 | too. Therefore, `next-window' can be used to iterate through the | |
1611 | set of windows even when the minibuffer is on another frame. If the | |
1612 | minibuffer does not count, only windows from WINDOW's frame count. | |
1613 | ||
1614 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1615 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1616 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1617 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1618 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1619 | Anything else means restrict to WINDOW's frame. | |
1620 | ||
1621 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1622 | `next-window' to iterate through the entire cycle of acceptable | |
1623 | windows, eventually ending up back at the window you started with. | |
1624 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1625 | (window, minibuf, all_frames) | |
67492200 | 1626 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1627 | { |
67492200 | 1628 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1629 | } |
1630 | ||
67492200 | 1631 | |
26f6279d | 1632 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1633 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1634 | If omitted, WINDOW defaults to the selected window. | |
1635 | ||
1636 | Optional second arg MINIBUF t means count the minibuffer window even | |
1637 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1638 | it is active. MINIBUF neither t nor nil means not to count the | |
1639 | minibuffer even if it is active. | |
1640 | ||
1641 | Several frames may share a single minibuffer; if the minibuffer | |
1642 | counts, all windows on all frames that share that minibuffer count | |
1643 | too. Therefore, `previous-window' can be used to iterate through | |
1644 | the set of windows even when the minibuffer is on another frame. If | |
1645 | the minibuffer does not count, only windows from WINDOW's frame count | |
1646 | ||
1647 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1648 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1649 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1650 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1651 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1652 | Anything else means restrict to WINDOW's frame. | |
1653 | ||
1654 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1655 | `previous-window' to iterate through the entire cycle of acceptable | |
1656 | windows, eventually ending up back at the window you started with. | |
1657 | `next-window' traverses the same cycle, in the reverse order. */) | |
1658 | (window, minibuf, all_frames) | |
67492200 | 1659 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1660 | { |
67492200 | 1661 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1662 | } |
1663 | ||
67492200 | 1664 | |
62c07cc7 | 1665 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1666 | doc: /* Select the ARG'th different window on this frame. |
1667 | All windows on current frame are arranged in a cyclic order. | |
1668 | This command selects the window ARG steps away in that order. | |
1669 | A negative ARG moves in the opposite order. If the optional second | |
1670 | argument ALL_FRAMES is non-nil, cycle through all frames. */) | |
1671 | (arg, all_frames) | |
67492200 | 1672 | Lisp_Object arg, all_frames; |
7ab12479 | 1673 | { |
67492200 GM |
1674 | Lisp_Object window; |
1675 | int i; | |
7ab12479 | 1676 | |
b7826503 | 1677 | CHECK_NUMBER (arg); |
67492200 | 1678 | window = selected_window; |
177c0ea7 | 1679 | |
67492200 GM |
1680 | for (i = XINT (arg); i > 0; --i) |
1681 | window = Fnext_window (window, Qnil, all_frames); | |
1682 | for (; i < 0; ++i) | |
1683 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1684 | |
14d87dc9 | 1685 | Fselect_window (window, Qnil); |
7ab12479 JB |
1686 | return Qnil; |
1687 | } | |
67492200 GM |
1688 | |
1689 | ||
1690 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1691 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1692 | FRAME nil or omitted means use the selected frame. | |
1693 | WINDOW nil or omitted means use the selected window. | |
1694 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1695 | MINIBUF nil or omitted means include the minibuffer window only | |
1696 | if it's active. | |
1697 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1698 | (frame, minibuf, window) | |
cd2904bd GM |
1699 | Lisp_Object frame, minibuf, window; |
1700 | { | |
cd2904bd GM |
1701 | if (NILP (window)) |
1702 | window = selected_window; | |
1703 | if (NILP (frame)) | |
1704 | frame = selected_frame; | |
1705 | ||
1706 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1707 | error ("Window is on a different frame"); | |
1708 | ||
1709 | return window_list_1 (window, minibuf, frame); | |
1710 | } | |
1711 | ||
1712 | ||
1713 | /* Return a list of windows in canonical ordering. Arguments are like | |
1714 | for `next-window'. */ | |
1715 | ||
1716 | static Lisp_Object | |
1717 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1718 | Lisp_Object window, minibuf, all_frames; |
67492200 GM |
1719 | { |
1720 | Lisp_Object tail, list; | |
1721 | ||
1722 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1723 | list = Qnil; | |
177c0ea7 | 1724 | |
67492200 | 1725 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 1726 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 1727 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 1728 | |
118ea242 | 1729 | return Fnreverse (list); |
67492200 GM |
1730 | } |
1731 | ||
1732 | ||
7ab12479 JB |
1733 | \f |
1734 | /* Look at all windows, performing an operation specified by TYPE | |
1735 | with argument OBJ. | |
75d8f668 | 1736 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1737 | Qnil, look at just the selected frame; |
89bca612 | 1738 | Qvisible, look at visible frames; |
75d8f668 | 1739 | a frame, just look at windows on that frame. |
85fe3b5e | 1740 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1741 | |
1742 | enum window_loop | |
1743 | { | |
1744 | WINDOW_LOOP_UNUSED, | |
1745 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1746 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1747 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1748 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1749 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1750 | UNSHOW_BUFFER, /* Arg is buffer */ |
1751 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1752 | }; |
1753 | ||
1754 | static Lisp_Object | |
44fa5b1e | 1755 | window_loop (type, obj, mini, frames) |
7ab12479 | 1756 | enum window_loop type; |
118ea242 | 1757 | Lisp_Object obj, frames; |
7ab12479 JB |
1758 | int mini; |
1759 | { | |
118ea242 GM |
1760 | Lisp_Object window, windows, best_window, frame_arg; |
1761 | struct frame *f; | |
ffdc852d | 1762 | struct gcpro gcpro1; |
177c0ea7 | 1763 | |
44fa5b1e JB |
1764 | /* If we're only looping through windows on a particular frame, |
1765 | frame points to that frame. If we're looping through windows | |
1766 | on all frames, frame is 0. */ | |
1767 | if (FRAMEP (frames)) | |
118ea242 | 1768 | f = XFRAME (frames); |
44fa5b1e | 1769 | else if (NILP (frames)) |
118ea242 | 1770 | f = SELECTED_FRAME (); |
7ab12479 | 1771 | else |
118ea242 | 1772 | f = NULL; |
177c0ea7 | 1773 | |
118ea242 | 1774 | if (f) |
89bca612 | 1775 | frame_arg = Qlambda; |
f812f9c6 RS |
1776 | else if (XFASTINT (frames) == 0) |
1777 | frame_arg = frames; | |
89bca612 RS |
1778 | else if (EQ (frames, Qvisible)) |
1779 | frame_arg = frames; | |
118ea242 GM |
1780 | else |
1781 | frame_arg = Qt; | |
7ab12479 | 1782 | |
89bca612 RS |
1783 | /* frame_arg is Qlambda to stick to one frame, |
1784 | Qvisible to consider all visible frames, | |
1785 | or Qt otherwise. */ | |
1786 | ||
7ab12479 | 1787 | /* Pick a window to start with. */ |
017b2bad | 1788 | if (WINDOWP (obj)) |
118ea242 GM |
1789 | window = obj; |
1790 | else if (f) | |
1791 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1792 | else |
118ea242 | 1793 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1794 | |
cd2904bd | 1795 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1796 | GCPRO1 (windows); |
7ab12479 | 1797 | best_window = Qnil; |
118ea242 GM |
1798 | |
1799 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1800 | { |
118ea242 | 1801 | struct window *w; |
177c0ea7 | 1802 | |
118ea242 GM |
1803 | window = XCAR (windows); |
1804 | w = XWINDOW (window); | |
177c0ea7 | 1805 | |
118ea242 GM |
1806 | /* Note that we do not pay attention here to whether the frame |
1807 | is visible, since Fwindow_list skips non-visible frames if | |
1808 | that is desired, under the control of frame_arg. */ | |
1809 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1810 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1811 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1812 | || (mini && minibuf_level > 0)) |
1813 | switch (type) | |
1814 | { | |
1815 | case GET_BUFFER_WINDOW: | |
118ea242 | 1816 | if (EQ (w->buffer, obj) |
5c204627 RS |
1817 | /* Don't find any minibuffer window |
1818 | except the one that is currently in use. */ | |
118ea242 GM |
1819 | && (MINI_WINDOW_P (w) |
1820 | ? EQ (window, minibuf_window) | |
1821 | : 1)) | |
1822 | { | |
5ddc1b75 GM |
1823 | if (NILP (best_window)) |
1824 | best_window = window; | |
1825 | else if (EQ (window, selected_window)) | |
1826 | /* For compatibility with 20.x, prefer to return | |
1827 | selected-window. */ | |
1828 | best_window = window; | |
118ea242 | 1829 | } |
7ab12479 JB |
1830 | break; |
1831 | ||
1832 | case GET_LRU_WINDOW: | |
1833 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1834 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1835 | break; |
7ab12479 | 1836 | /* Ignore dedicated windows and minibuffers. */ |
a5731348 | 1837 | if (MINI_WINDOW_P (w) || EQ (w->dedicated, Qt)) |
7ab12479 | 1838 | break; |
265a9e55 | 1839 | if (NILP (best_window) |
7ab12479 | 1840 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1841 | > XFASTINT (w->use_time))) |
1842 | best_window = window; | |
7ab12479 JB |
1843 | break; |
1844 | ||
1845 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1846 | if (!EQ (window, obj)) |
1847 | Fdelete_window (window); | |
7ab12479 JB |
1848 | break; |
1849 | ||
1850 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1851 | if (EQ (w->buffer, obj)) |
7ab12479 | 1852 | { |
118ea242 | 1853 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1854 | |
1855 | /* If this window is dedicated, and in a frame of its own, | |
1856 | kill the frame. */ | |
118ea242 GM |
1857 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1858 | && !NILP (w->dedicated) | |
3548e138 | 1859 | && other_visible_frames (f)) |
7ab12479 | 1860 | { |
3548e138 RS |
1861 | /* Skip the other windows on this frame. |
1862 | There might be one, the minibuffer! */ | |
118ea242 GM |
1863 | while (CONSP (XCDR (windows)) |
1864 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1865 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1866 | windows = XCDR (windows); | |
177c0ea7 | 1867 | |
3548e138 | 1868 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1869 | Fdelete_frame (w->frame, Qnil); |
1870 | } | |
1871 | else if (NILP (w->parent)) | |
1872 | { | |
1873 | /* If we're deleting the buffer displayed in the | |
1874 | only window on the frame, find a new buffer to | |
1875 | display there. */ | |
1876 | Lisp_Object buffer; | |
1877 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 1878 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
1879 | if (EQ (window, selected_window)) |
1880 | Fset_buffer (w->buffer); | |
7ab12479 JB |
1881 | } |
1882 | else | |
118ea242 | 1883 | Fdelete_window (window); |
7ab12479 JB |
1884 | } |
1885 | break; | |
1886 | ||
1887 | case GET_LARGEST_WINDOW: | |
7ab12479 | 1888 | { |
118ea242 | 1889 | /* Ignore dedicated windows and minibuffers. */ |
a5731348 | 1890 | if (MINI_WINDOW_P (w) || EQ (w->dedicated, Qt)) |
118ea242 | 1891 | break; |
177c0ea7 | 1892 | |
c930dfab | 1893 | if (NILP (best_window)) |
118ea242 | 1894 | best_window = window; |
c930dfab GM |
1895 | else |
1896 | { | |
1897 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
1898 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
1899 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
1900 | best_window = window; |
1901 | } | |
7ab12479 JB |
1902 | } |
1903 | break; | |
1904 | ||
1905 | case UNSHOW_BUFFER: | |
118ea242 | 1906 | if (EQ (w->buffer, obj)) |
7ab12479 | 1907 | { |
118ea242 GM |
1908 | Lisp_Object buffer; |
1909 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 1910 | |
7ab12479 | 1911 | /* Find another buffer to show in this window. */ |
118ea242 | 1912 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 1913 | |
38ab08d1 RS |
1914 | /* If this window is dedicated, and in a frame of its own, |
1915 | kill the frame. */ | |
118ea242 GM |
1916 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1917 | && !NILP (w->dedicated) | |
38ab08d1 | 1918 | && other_visible_frames (f)) |
45945a7b RS |
1919 | { |
1920 | /* Skip the other windows on this frame. | |
1921 | There might be one, the minibuffer! */ | |
118ea242 GM |
1922 | while (CONSP (XCDR (windows)) |
1923 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1924 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1925 | windows = XCDR (windows); | |
177c0ea7 | 1926 | |
45945a7b | 1927 | /* Now we can safely delete the frame. */ |
118ea242 | 1928 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 1929 | } |
a5731348 SM |
1930 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
1931 | { | |
1932 | Lisp_Object window; | |
1933 | XSETWINDOW (window, w); | |
1934 | /* If this window is dedicated and not the only window | |
1935 | in its frame, then kill it. */ | |
1936 | Fdelete_window (window); | |
1937 | } | |
38ab08d1 | 1938 | else |
38ab08d1 RS |
1939 | { |
1940 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 1941 | w->dedicated = Qnil; |
949cf20f | 1942 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
1943 | if (EQ (window, selected_window)) |
1944 | Fset_buffer (w->buffer); | |
38ab08d1 | 1945 | } |
7ab12479 JB |
1946 | } |
1947 | break; | |
3f8ab7bd RS |
1948 | |
1949 | /* Check for a window that has a killed buffer. */ | |
1950 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
1951 | if (! NILP (w->buffer) |
1952 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 1953 | abort (); |
118ea242 | 1954 | break; |
6bbd7a29 GM |
1955 | |
1956 | case WINDOW_LOOP_UNUSED: | |
1957 | break; | |
7ab12479 | 1958 | } |
7ab12479 | 1959 | } |
7ab12479 | 1960 | |
118ea242 | 1961 | UNGCPRO; |
7ab12479 | 1962 | return best_window; |
37962e60 | 1963 | } |
605be8af | 1964 | |
3f8ab7bd RS |
1965 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1966 | ||
233a4a2c | 1967 | void |
3f8ab7bd RS |
1968 | check_all_windows () |
1969 | { | |
1970 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1971 | } | |
1972 | ||
7ab12479 | 1973 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
fdb82f93 PJ |
1974 | doc: /* Return the window least recently selected or used for display. |
1975 | If optional argument FRAME is `visible', search all visible frames. | |
1976 | If FRAME is 0, search all visible and iconified frames. | |
1977 | If FRAME is t, search all frames. | |
1978 | If FRAME is nil, search only the selected frame. | |
1979 | If FRAME is a frame, search only that frame. */) | |
1980 | (frame) | |
1981 | Lisp_Object frame; | |
7ab12479 JB |
1982 | { |
1983 | register Lisp_Object w; | |
1984 | /* First try for a window that is full-width */ | |
89bca612 | 1985 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1986 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1987 | return w; |
1988 | /* If none of them, try the rest */ | |
89bca612 | 1989 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1990 | } |
1991 | ||
1992 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
fdb82f93 PJ |
1993 | doc: /* Return the largest window in area. |
1994 | If optional argument FRAME is `visible', search all visible frames. | |
1995 | If FRAME is 0, search all visible and iconified frames. | |
1996 | If FRAME is t, search all frames. | |
1997 | If FRAME is nil, search only the selected frame. | |
1998 | If FRAME is a frame, search only that frame. */) | |
1999 | (frame) | |
2000 | Lisp_Object frame; | |
7ab12479 JB |
2001 | { |
2002 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 2003 | frame); |
7ab12479 JB |
2004 | } |
2005 | ||
2006 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 PJ |
2007 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
2008 | If optional argument FRAME is `visible', search all visible frames. | |
2009 | If optional argument 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 | (buffer, frame) | |
2014 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2015 | { |
2016 | buffer = Fget_buffer (buffer); | |
017b2bad | 2017 | if (BUFFERP (buffer)) |
44fa5b1e | 2018 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2019 | else |
2020 | return Qnil; | |
2021 | } | |
2022 | ||
2023 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2024 | 0, 1, "", |
2025 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2026 | Only the frame WINDOW is on is affected. | |
2027 | This function tries to reduce display jumps | |
2028 | by keeping the text previously visible in WINDOW | |
2029 | in the same place on the frame. Doing this depends on | |
2030 | the value of (window-start WINDOW), so if calling this function | |
2031 | in a program gives strange scrolling, make sure the window-start | |
2032 | value is reasonable when this function is called. */) | |
2033 | (window) | |
7ab12479 JB |
2034 | Lisp_Object window; |
2035 | { | |
2036 | struct window *w; | |
00d3d838 | 2037 | int startpos; |
85fe3b5e | 2038 | int top, new_top; |
7ab12479 | 2039 | |
265a9e55 | 2040 | if (NILP (window)) |
7ab12479 JB |
2041 | window = selected_window; |
2042 | else | |
b7826503 | 2043 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2044 | w = XWINDOW (window); |
a2b38b3c | 2045 | |
00d3d838 | 2046 | startpos = marker_position (w->start); |
949cf20f | 2047 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2048 | |
a2b38b3c RS |
2049 | if (MINI_WINDOW_P (w) && top > 0) |
2050 | error ("Can't expand minibuffer to full frame"); | |
2051 | ||
70728a80 | 2052 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2053 | |
00d3d838 KH |
2054 | /* Try to minimize scrolling, by setting the window start to the point |
2055 | will cause the text at the old window start to be at the same place | |
2056 | on the frame. But don't try to do this if the window start is | |
2057 | outside the visible portion (as might happen when the display is | |
2058 | not current, due to typeahead). */ | |
949cf20f | 2059 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2060 | if (new_top != top |
2061 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2062 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2063 | { | |
2064 | struct position pos; | |
2065 | struct buffer *obuf = current_buffer; | |
2066 | ||
2067 | Fset_buffer (w->buffer); | |
2068 | /* This computation used to temporarily move point, but that can | |
2069 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2070 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2071 | |
b73ea88e | 2072 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2073 | w->window_end_valid = Qnil; |
b73ea88e RS |
2074 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2075 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2076 | : Qnil); |
80622eec RS |
2077 | /* We need to do this, so that the window-scroll-functions |
2078 | get called. */ | |
4d047f50 | 2079 | w->optional_new_start = Qt; |
00d3d838 KH |
2080 | |
2081 | set_buffer_internal (obuf); | |
2082 | } | |
5500c422 | 2083 | |
7ab12479 JB |
2084 | return Qnil; |
2085 | } | |
2086 | ||
2087 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2088 | 1, 2, "bDelete windows on (buffer): ", |
2089 | doc: /* Delete all windows showing BUFFER. | |
2090 | Optional second argument FRAME controls which frames are affected. | |
2091 | If optional argument FRAME is `visible', search all visible frames. | |
2092 | If FRAME is 0, search all visible and iconified frames. | |
2093 | If FRAME is nil, search all frames. | |
2094 | If FRAME is t, search only the selected frame. | |
2095 | If FRAME is a frame, search only that frame. */) | |
2096 | (buffer, frame) | |
26f6279d | 2097 | Lisp_Object buffer, frame; |
7ab12479 | 2098 | { |
26f6279d JB |
2099 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2100 | expects. */ | |
c520265e RS |
2101 | if (NILP (frame)) |
2102 | frame = Qt; | |
2103 | else if (EQ (frame, Qt)) | |
2104 | frame = Qnil; | |
26f6279d | 2105 | |
265a9e55 | 2106 | if (!NILP (buffer)) |
7ab12479 JB |
2107 | { |
2108 | buffer = Fget_buffer (buffer); | |
b7826503 | 2109 | CHECK_BUFFER (buffer); |
26f6279d | 2110 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2111 | } |
177c0ea7 | 2112 | |
7ab12479 JB |
2113 | return Qnil; |
2114 | } | |
2115 | ||
2116 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2117 | Sreplace_buffer_in_windows, |
2118 | 1, 1, "bReplace buffer in windows: ", | |
2119 | doc: /* Replace BUFFER with some other buffer in all windows showing it. */) | |
2120 | (buffer) | |
7ab12479 JB |
2121 | Lisp_Object buffer; |
2122 | { | |
265a9e55 | 2123 | if (!NILP (buffer)) |
7ab12479 JB |
2124 | { |
2125 | buffer = Fget_buffer (buffer); | |
b7826503 | 2126 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2127 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2128 | } | |
2129 | return Qnil; | |
2130 | } | |
ff58478b RS |
2131 | |
2132 | /* Replace BUFFER with some other buffer in all windows | |
2133 | of all frames, even those on other keyboards. */ | |
2134 | ||
2135 | void | |
2136 | replace_buffer_in_all_windows (buffer) | |
2137 | Lisp_Object buffer; | |
2138 | { | |
27abb84f | 2139 | #ifdef MULTI_KBOARD |
ff58478b RS |
2140 | Lisp_Object tail, frame; |
2141 | ||
ff58478b RS |
2142 | /* A single call to window_loop won't do the job |
2143 | because it only considers frames on the current keyboard. | |
2144 | So loop manually over frames, and handle each one. */ | |
2145 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2146 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2147 | #else |
db7f721d | 2148 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2149 | #endif |
2150 | } | |
7ab12479 JB |
2151 | \f |
2152 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2153 | |
2154 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2155 | might crash Emacs. */ | |
5500c422 | 2156 | |
a481b3ea | 2157 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2158 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2159 | |
2160 | /* Make sure that window_min_height and window_min_width are | |
2161 | not too small; if they are, set them to safe minima. */ | |
2162 | ||
2163 | static void | |
2164 | check_min_window_sizes () | |
2165 | { | |
2166 | /* Smaller values might permit a crash. */ | |
2167 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2168 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2169 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2170 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2171 | } | |
2172 | ||
2173 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2174 | minimum allowable size. */ | |
5500c422 | 2175 | |
605be8af | 2176 | void |
a481b3ea | 2177 | check_frame_size (frame, rows, cols) |
605be8af JB |
2178 | FRAME_PTR frame; |
2179 | int *rows, *cols; | |
a481b3ea | 2180 | { |
628df3bf | 2181 | /* For height, we have to see: |
54b8bcb5 RS |
2182 | how many windows the frame has at minimum (one or two), |
2183 | and whether it has a menu bar or other special stuff at the top. */ | |
2184 | int min_height | |
2185 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2186 | ? MIN_SAFE_WINDOW_HEIGHT | |
2187 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2188 | |
5500c422 GM |
2189 | if (FRAME_TOP_MARGIN (frame) > 0) |
2190 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2191 | |
2192 | if (*rows < min_height) | |
2193 | *rows = min_height; | |
2194 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2195 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2196 | } | |
2197 | ||
c1636aa6 | 2198 | |
233a4a2c GM |
2199 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2200 | check if W's width can be changed, otherwise check W's height. | |
2201 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2202 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2203 | either. */ | |
c1636aa6 | 2204 | |
233a4a2c GM |
2205 | static int |
2206 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2207 | struct window *w; | |
2208 | int width_p, check_siblings_p; | |
2209 | { | |
2210 | int fixed_p; | |
2211 | struct window *c; | |
177c0ea7 | 2212 | |
233a4a2c GM |
2213 | if (!NILP (w->hchild)) |
2214 | { | |
2215 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2216 | |
233a4a2c GM |
2217 | if (width_p) |
2218 | { | |
2219 | /* A horiz. combination is fixed-width if all of if its | |
2220 | children are. */ | |
2221 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2222 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2223 | fixed_p = c == NULL; | |
2224 | } | |
2225 | else | |
2226 | { | |
2227 | /* A horiz. combination is fixed-height if one of if its | |
2228 | children is. */ | |
2229 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2230 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2231 | fixed_p = c != NULL; | |
2232 | } | |
2233 | } | |
2234 | else if (!NILP (w->vchild)) | |
2235 | { | |
2236 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2237 | |
233a4a2c GM |
2238 | if (width_p) |
2239 | { | |
2240 | /* A vert. combination is fixed-width if one of if its | |
2241 | children is. */ | |
2242 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2243 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2244 | fixed_p = c != NULL; | |
2245 | } | |
2246 | else | |
2247 | { | |
2248 | /* A vert. combination is fixed-height if all of if its | |
2249 | children are. */ | |
2250 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2251 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2252 | fixed_p = c == NULL; | |
2253 | } | |
2254 | } | |
2255 | else if (BUFFERP (w->buffer)) | |
2256 | { | |
a34dfd12 GM |
2257 | if (w->height_fixed_p && !width_p) |
2258 | fixed_p = 1; | |
2259 | else | |
233a4a2c | 2260 | { |
a34dfd12 GM |
2261 | struct buffer *old = current_buffer; |
2262 | Lisp_Object val; | |
177c0ea7 | 2263 | |
a34dfd12 GM |
2264 | current_buffer = XBUFFER (w->buffer); |
2265 | val = find_symbol_value (Qwindow_size_fixed); | |
2266 | current_buffer = old; | |
2267 | ||
2268 | fixed_p = 0; | |
2269 | if (!EQ (val, Qunbound)) | |
2270 | { | |
2271 | fixed_p = !NILP (val); | |
177c0ea7 | 2272 | |
a34dfd12 GM |
2273 | if (fixed_p |
2274 | && ((EQ (val, Qheight) && width_p) | |
2275 | || (EQ (val, Qwidth) && !width_p))) | |
2276 | fixed_p = 0; | |
2277 | } | |
233a4a2c GM |
2278 | } |
2279 | ||
2280 | /* Can't tell if this one is resizable without looking at | |
2281 | siblings. If all siblings are fixed-size this one is too. */ | |
2282 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2283 | { | |
2284 | Lisp_Object child; | |
177c0ea7 | 2285 | |
233a4a2c GM |
2286 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2287 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2288 | break; | |
2289 | ||
2290 | if (NILP (child)) | |
2291 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2292 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2293 | break; | |
2294 | ||
2295 | if (NILP (child)) | |
2296 | fixed_p = 1; | |
2297 | } | |
2298 | } | |
2299 | else | |
2300 | fixed_p = 1; | |
2301 | ||
2302 | return fixed_p; | |
2303 | } | |
177c0ea7 | 2304 | |
233a4a2c GM |
2305 | |
2306 | /* Return the minimum size of window W, not taking fixed-width windows | |
2307 | into account. WIDTH_P non-zero means return the minimum width, | |
2308 | otherwise return the minimum height. If W is a combination window, | |
2309 | compute the minimum size from the minimum sizes of W's children. */ | |
2310 | ||
2311 | static int | |
2312 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2313 | struct window *w; |
2314 | int width_p; | |
2315 | { | |
233a4a2c | 2316 | struct window *c; |
c1636aa6 | 2317 | int size; |
177c0ea7 | 2318 | |
233a4a2c GM |
2319 | if (!NILP (w->hchild)) |
2320 | { | |
2321 | c = XWINDOW (w->hchild); | |
2322 | size = 0; | |
177c0ea7 | 2323 | |
233a4a2c GM |
2324 | if (width_p) |
2325 | { | |
2326 | /* The min width of a horizontal combination is | |
2327 | the sum of the min widths of its children. */ | |
2328 | while (c) | |
2329 | { | |
2330 | size += window_min_size_1 (c, width_p); | |
2331 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2332 | } | |
2333 | } | |
2334 | else | |
2335 | { | |
2336 | /* The min height a horizontal combination equals | |
2337 | the maximum of all min height of its children. */ | |
2338 | while (c) | |
2339 | { | |
2340 | int min_size = window_min_size_1 (c, width_p); | |
2341 | size = max (min_size, size); | |
2342 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2343 | } | |
2344 | } | |
2345 | } | |
2346 | else if (!NILP (w->vchild)) | |
2347 | { | |
2348 | c = XWINDOW (w->vchild); | |
2349 | size = 0; | |
177c0ea7 | 2350 | |
233a4a2c GM |
2351 | if (width_p) |
2352 | { | |
2353 | /* The min width of a vertical combination is | |
2354 | the maximum of the min widths of its children. */ | |
2355 | while (c) | |
2356 | { | |
2357 | int min_size = window_min_size_1 (c, width_p); | |
2358 | size = max (min_size, size); | |
2359 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2360 | } | |
2361 | } | |
2362 | else | |
2363 | { | |
2364 | /* The min height of a vertical combination equals | |
2365 | the sum of the min height of its children. */ | |
2366 | while (c) | |
2367 | { | |
2368 | size += window_min_size_1 (c, width_p); | |
2369 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2370 | } | |
2371 | } | |
2372 | } | |
c1636aa6 GM |
2373 | else |
2374 | { | |
233a4a2c GM |
2375 | if (width_p) |
2376 | size = window_min_width; | |
c1636aa6 | 2377 | else |
233a4a2c GM |
2378 | { |
2379 | if (MINI_WINDOW_P (w) | |
2380 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2381 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2382 | size = 1; |
2383 | else | |
2384 | size = window_min_height; | |
2385 | } | |
c1636aa6 GM |
2386 | } |
2387 | ||
2388 | return size; | |
2389 | } | |
2390 | ||
2391 | ||
233a4a2c GM |
2392 | /* Return the minimum size of window W, taking fixed-size windows into |
2393 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2394 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2395 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2396 | unless FIXED is null. */ | |
7ab12479 | 2397 | |
233a4a2c | 2398 | static int |
f984d4fc | 2399 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2400 | struct window *w; |
f984d4fc | 2401 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2402 | { |
2403 | int size, fixed_p; | |
2404 | ||
f984d4fc GM |
2405 | if (ignore_fixed_p) |
2406 | fixed_p = 0; | |
2407 | else | |
2408 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2409 | |
233a4a2c GM |
2410 | if (fixed) |
2411 | *fixed = fixed_p; | |
177c0ea7 | 2412 | |
233a4a2c | 2413 | if (fixed_p) |
949cf20f | 2414 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2415 | else |
2416 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2417 | |
233a4a2c GM |
2418 | return size; |
2419 | } | |
2420 | ||
2421 | ||
949cf20f KS |
2422 | /* Adjust the margins of window W if text area is too small. |
2423 | Return 1 if window width is ok after adjustment; 0 if window | |
2424 | is still too narrow. */ | |
2425 | ||
2426 | static int | |
2427 | adjust_window_margins (w) | |
2428 | struct window *w; | |
2429 | { | |
2430 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2431 | - WINDOW_FRINGE_COLS (w) | |
2432 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2433 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2434 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2435 | ||
2436 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2437 | return 1; | |
2438 | ||
2439 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2440 | return 0; | |
2441 | ||
2442 | /* Window's text area is too narrow, but reducing the window | |
2443 | margins will fix that. */ | |
2444 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2445 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2446 | { | |
2447 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2448 | w->left_margin_cols = w->right_margin_cols | |
2449 | = make_number (margin_cols/2); | |
2450 | else | |
2451 | w->right_margin_cols = make_number (margin_cols); | |
2452 | } | |
2453 | else | |
2454 | w->left_margin_cols = make_number (margin_cols); | |
2455 | return 1; | |
2456 | } | |
2457 | ||
2458 | ||
233a4a2c GM |
2459 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2460 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2461 | keep their proportionate size relative to WINDOW. Propagate | |
2462 | WINDOW's top or left edge position to children. Delete windows | |
192c3131 RS |
2463 | that become too small unless NODELETE_P is non-zero. |
2464 | ||
2465 | If NODELETE_P is 2, that means we do delete windows that are | |
2466 | too small, even if they were too small before! */ | |
233a4a2c GM |
2467 | |
2468 | static void | |
2469 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2470 | Lisp_Object window; |
233a4a2c | 2471 | int size, width_p, nodelete_p; |
7ab12479 | 2472 | { |
233a4a2c GM |
2473 | struct window *w = XWINDOW (window); |
2474 | struct window *c; | |
2475 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 2476 | int old_size, min_size, safe_min_size; |
7ab12479 | 2477 | |
949cf20f KS |
2478 | /* We test nodelete_p != 2 and nodelete_p != 1 below, so it |
2479 | seems like it's too soon to do this here. ++KFS. */ | |
192c3131 RS |
2480 | if (nodelete_p == 2) |
2481 | nodelete_p = 0; | |
2482 | ||
a481b3ea | 2483 | check_min_window_sizes (); |
7ae2f10f | 2484 | size = max (0, size); |
177c0ea7 | 2485 | |
b5f05b50 GM |
2486 | /* If the window has been "too small" at one point, |
2487 | don't delete it for being "too small" in the future. | |
2488 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2489 | if (width_p) |
2490 | { | |
949cf20f | 2491 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 2492 | min_size = window_min_width; |
949cf20f KS |
2493 | /* Ensure that there is room for the scroll bar and fringes! |
2494 | We may reduce display margins though. */ | |
2495 | safe_min_size = (MIN_SAFE_WINDOW_WIDTH | |
2496 | + WINDOW_FRINGE_COLS (w) | |
2497 | + WINDOW_SCROLL_BAR_COLS (w)); | |
233a4a2c GM |
2498 | } |
2499 | else | |
2500 | { | |
949cf20f | 2501 | old_size = XINT (w->total_lines); |
233a4a2c | 2502 | min_size = window_min_height; |
949cf20f | 2503 | safe_min_size = MIN_SAFE_WINDOW_HEIGHT; |
233a4a2c | 2504 | } |
192c3131 RS |
2505 | |
2506 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
2507 | w->too_small_ok = Qt; |
2508 | ||
233a4a2c | 2509 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 2510 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 2511 | { |
b5f05b50 | 2512 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2513 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
2514 | if (min_size < safe_min_size) |
2515 | min_size = safe_min_size; | |
233a4a2c | 2516 | if (size < min_size) |
c1636aa6 GM |
2517 | { |
2518 | delete_window (window); | |
2519 | return; | |
2520 | } | |
7ab12479 JB |
2521 | } |
2522 | ||
233a4a2c | 2523 | /* Set redisplay hints. */ |
7ae2f10f GM |
2524 | w->last_modified = make_number (0); |
2525 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2526 | windows_or_buffers_changed++; |
7ae2f10f | 2527 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2528 | |
233a4a2c GM |
2529 | if (width_p) |
2530 | { | |
2531 | sideward = &w->vchild; | |
2532 | forward = &w->hchild; | |
949cf20f KS |
2533 | w->total_cols = make_number (size); |
2534 | adjust_window_margins (w); | |
233a4a2c GM |
2535 | } |
2536 | else | |
2537 | { | |
2538 | sideward = &w->hchild; | |
2539 | forward = &w->vchild; | |
949cf20f KS |
2540 | w->total_lines = make_number (size); |
2541 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
2542 | } |
2543 | ||
2544 | if (!NILP (*sideward)) | |
7ab12479 | 2545 | { |
233a4a2c | 2546 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2547 | { |
233a4a2c GM |
2548 | c = XWINDOW (child); |
2549 | if (width_p) | |
949cf20f | 2550 | c->left_col = w->left_col; |
233a4a2c | 2551 | else |
949cf20f | 2552 | c->top_line = w->top_line; |
233a4a2c | 2553 | size_window (child, size, width_p, nodelete_p); |
7ab12479 JB |
2554 | } |
2555 | } | |
233a4a2c | 2556 | else if (!NILP (*forward)) |
7ab12479 | 2557 | { |
233a4a2c GM |
2558 | int fixed_size, each, extra, n; |
2559 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2560 | int last_pos, first_pos, nchildren, total; |
233a4a2c GM |
2561 | |
2562 | /* Determine the fixed-size portion of the this window, and the | |
2563 | number of child windows. */ | |
8b6d9dc9 | 2564 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2565 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2566 | { |
8b6d9dc9 | 2567 | int child_size; |
177c0ea7 | 2568 | |
7ab12479 | 2569 | c = XWINDOW (child); |
949cf20f | 2570 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 2571 | total += child_size; |
177c0ea7 | 2572 | |
233a4a2c GM |
2573 | if (window_fixed_size_p (c, width_p, 0)) |
2574 | { | |
8b6d9dc9 | 2575 | fixed_size += child_size; |
233a4a2c GM |
2576 | ++nfixed; |
2577 | } | |
2578 | } | |
7ab12479 | 2579 | |
233a4a2c GM |
2580 | /* If the new size is smaller than fixed_size, or if there |
2581 | aren't any resizable windows, allow resizing fixed-size | |
2582 | windows. */ | |
2583 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2584 | ||
2585 | /* Compute how many lines/columns to add to each child. The | |
2586 | value of extra takes care of rounding errors. */ | |
2587 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
8b6d9dc9 GM |
2588 | each = (size - total) / n; |
2589 | extra = (size - total) - n * each; | |
233a4a2c GM |
2590 | |
2591 | /* Compute new children heights and edge positions. */ | |
949cf20f | 2592 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c GM |
2593 | last_pos = first_pos; |
2594 | for (child = *forward; !NILP (child); child = c->next) | |
2595 | { | |
2596 | int new_size, old_size; | |
177c0ea7 | 2597 | |
233a4a2c | 2598 | c = XWINDOW (child); |
949cf20f | 2599 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 2600 | new_size = old_size; |
7ab12479 | 2601 | |
233a4a2c GM |
2602 | /* The top or left edge position of this child equals the |
2603 | bottom or right edge of its predecessor. */ | |
2604 | if (width_p) | |
949cf20f | 2605 | c->left_col = make_number (last_pos); |
233a4a2c | 2606 | else |
949cf20f | 2607 | c->top_line = make_number (last_pos); |
7ab12479 | 2608 | |
233a4a2c GM |
2609 | /* If this child can be resized, do it. */ |
2610 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2611 | { | |
2612 | new_size = old_size + each + extra; | |
2613 | extra = 0; | |
2614 | } | |
177c0ea7 | 2615 | |
233a4a2c GM |
2616 | /* Set new height. Note that size_window also propagates |
2617 | edge positions to children, so it's not a no-op if we | |
2618 | didn't change the child's size. */ | |
2619 | size_window (child, new_size, width_p, 1); | |
2620 | ||
2621 | /* Remember the bottom/right edge position of this child; it | |
2622 | will be used to set the top/left edge of the next child. */ | |
2623 | last_pos += new_size; | |
7ab12479 | 2624 | } |
233a4a2c GM |
2625 | |
2626 | /* We should have covered the parent exactly with child windows. */ | |
2627 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 2628 | |
7ab12479 | 2629 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2630 | if (!nodelete_p) |
2631 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2632 | { |
233a4a2c GM |
2633 | int child_size; |
2634 | c = XWINDOW (child); | |
949cf20f | 2635 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
192c3131 | 2636 | size_window (child, child_size, width_p, 2); |
7ab12479 JB |
2637 | } |
2638 | } | |
2639 | } | |
2640 | ||
233a4a2c GM |
2641 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2642 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2643 | that become too small in the process. (The caller should check | |
2644 | later and do so if appropriate.) */ | |
7ab12479 | 2645 | |
5e14b1fc | 2646 | void |
233a4a2c | 2647 | set_window_height (window, height, nodelete) |
7ab12479 | 2648 | Lisp_Object window; |
233a4a2c | 2649 | int height; |
7ab12479 JB |
2650 | int nodelete; |
2651 | { | |
233a4a2c GM |
2652 | size_window (window, height, 0, nodelete); |
2653 | } | |
7ab12479 | 2654 | |
7ab12479 | 2655 | |
233a4a2c GM |
2656 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2657 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2658 | that become too small in the process. (The caller should check | |
2659 | later and do so if appropriate.) */ | |
7ab12479 | 2660 | |
233a4a2c GM |
2661 | void |
2662 | set_window_width (window, width, nodelete) | |
2663 | Lisp_Object window; | |
2664 | int width; | |
2665 | int nodelete; | |
2666 | { | |
2667 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2668 | } |
233a4a2c | 2669 | |
cdbc7fec KS |
2670 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
2671 | ||
2672 | void | |
2673 | change_window_heights (window, n) | |
2674 | Lisp_Object window; | |
2675 | int n; | |
2676 | { | |
2677 | struct window *w = XWINDOW (window); | |
2678 | ||
949cf20f KS |
2679 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
2680 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 2681 | |
949cf20f KS |
2682 | if (INTEGERP (w->orig_top_line)) |
2683 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
2684 | if (INTEGERP (w->orig_total_lines)) | |
2685 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
2686 | |
2687 | /* Handle just the top child in a vertical split. */ | |
2688 | if (!NILP (w->vchild)) | |
2689 | change_window_heights (w->vchild, n); | |
2690 | ||
2691 | /* Adjust all children in a horizontal split. */ | |
2692 | for (window = w->hchild; !NILP (window); window = w->next) | |
2693 | { | |
2694 | w = XWINDOW (window); | |
2695 | change_window_heights (window, n); | |
2696 | } | |
2697 | } | |
2698 | ||
7ab12479 | 2699 | \f |
1d8d96fa | 2700 | int window_select_count; |
7ab12479 | 2701 | |
5b03d3c0 RS |
2702 | Lisp_Object |
2703 | Fset_window_buffer_unwind (obuf) | |
2704 | Lisp_Object obuf; | |
2705 | { | |
2706 | Fset_buffer (obuf); | |
2707 | return Qnil; | |
2708 | } | |
2709 | ||
7ab12479 | 2710 | |
5500c422 GM |
2711 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2712 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
2713 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
2714 | margins, fringes, and scroll-bar settings of the window are not | |
2715 | reset from the buffer's local settings. */ | |
7ab12479 | 2716 | |
5500c422 | 2717 | void |
949cf20f | 2718 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 2719 | Lisp_Object window, buffer; |
949cf20f | 2720 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
2721 | { |
2722 | struct window *w = XWINDOW (window); | |
2723 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 2724 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
2725 | |
2726 | w->buffer = buffer; | |
86e48436 RS |
2727 | |
2728 | if (EQ (window, selected_window)) | |
5500c422 | 2729 | b->last_selected_window = window; |
beb4e312 RS |
2730 | |
2731 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2732 | if (INTEGERP (b->display_count)) |
2733 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2734 | b->display_time = Fcurrent_time (); | |
86e48436 | 2735 | |
d834a2e9 | 2736 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2737 | XSETFASTINT (w->window_end_vpos, 0); |
2738 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2739 | w->window_end_valid = Qnil; |
1c686c99 | 2740 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 2741 | w->vscroll = 0; |
5500c422 | 2742 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2743 | set_marker_restricted (w->start, |
5500c422 | 2744 | make_number (b->last_window_start), |
7ab12479 JB |
2745 | buffer); |
2746 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2747 | w->force_start = Qnil; |
d834a2e9 | 2748 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2749 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2750 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2751 | |
2752 | /* We must select BUFFER for running the window-scroll-functions. | |
2753 | If WINDOW is selected, switch permanently. | |
2754 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2755 | if (EQ (window, selected_window)) |
2756 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2757 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2758 | because that might itself be a local variable. */ | |
2759 | else if (window_initialized) | |
2760 | { | |
2761 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2762 | Fset_buffer (buffer); | |
2763 | } | |
2764 | ||
949cf20f KS |
2765 | if (!keep_margins_p) |
2766 | { | |
2767 | /* Set left and right marginal area width etc. from buffer. */ | |
2768 | ||
2769 | /* This may call adjust_window_margins three times, so | |
2770 | temporarily disable window margins. */ | |
2771 | w->left_margin_cols = w->right_margin_cols = Qnil; | |
2772 | ||
2773 | Fset_window_fringes (window, | |
2774 | b->left_fringe_width, b->right_fringe_width, | |
2775 | b->fringes_outside_margins); | |
2776 | ||
2777 | Fset_window_scroll_bars (window, | |
2778 | b->scroll_bar_width, | |
2779 | b->vertical_scroll_bar_type, Qnil); | |
2780 | ||
2781 | Fset_window_margins (window, | |
2782 | b->left_margin_cols, b->right_margin_cols); | |
2783 | } | |
7ab12479 | 2784 | |
5500c422 GM |
2785 | if (run_hooks_p) |
2786 | { | |
2787 | if (! NILP (Vwindow_scroll_functions)) | |
2788 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2789 | Fmarker_position (w->start)); | |
2790 | ||
2791 | if (! NILP (Vwindow_configuration_change_hook) | |
2792 | && ! NILP (Vrun_hooks)) | |
2793 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2794 | } | |
543f5fb1 | 2795 | |
5b03d3c0 | 2796 | unbind_to (count, Qnil); |
5500c422 | 2797 | } |
5b03d3c0 | 2798 | |
5500c422 | 2799 | |
949cf20f | 2800 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 2801 | doc: /* Make WINDOW display BUFFER as its contents. |
949cf20f KS |
2802 | BUFFER can be a buffer or buffer name. |
2803 | Optional third arg KEEP_MARGINS non-nil means that WINDOW's current | |
2804 | display margins, fringe widths, and scroll bar settings are maintained; | |
2805 | the default is to reset these from BUFFER's local settings or the frame | |
2806 | defaults. */) | |
2807 | (window, buffer, keep_margins) | |
5500c422 GM |
2808 | register Lisp_Object window, buffer; |
2809 | { | |
2810 | register Lisp_Object tem; | |
2811 | register struct window *w = decode_window (window); | |
5500c422 | 2812 | |
bed0c171 | 2813 | XSETWINDOW (window, w); |
5500c422 | 2814 | buffer = Fget_buffer (buffer); |
b7826503 | 2815 | CHECK_BUFFER (buffer); |
5500c422 GM |
2816 | |
2817 | if (NILP (XBUFFER (buffer)->name)) | |
2818 | error ("Attempt to display deleted buffer"); | |
2819 | ||
2820 | tem = w->buffer; | |
2821 | if (NILP (tem)) | |
2822 | error ("Window is deleted"); | |
2823 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2824 | is first being set up. */ | |
2825 | { | |
2826 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2827 | error ("Window is dedicated to `%s'", | |
d5db4077 | 2828 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
2829 | |
2830 | unshow_buffer (w); | |
2831 | } | |
2832 | ||
949cf20f | 2833 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
2834 | return Qnil; |
2835 | } | |
2836 | ||
14d87dc9 | 2837 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 PJ |
2838 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
2839 | If WINDOW is not already selected, also make WINDOW's buffer current. | |
d1755117 | 2840 | Also make WINDOW the frame's selected window. |
14d87dc9 SM |
2841 | Optional second arg NORECORD non-nil means |
2842 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 2843 | |
fdb82f93 PJ |
2844 | Note that the main editor command loop |
2845 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
2846 | (window, norecord) |
2847 | register Lisp_Object window, norecord; | |
7ab12479 JB |
2848 | { |
2849 | register struct window *w; | |
719eaeb1 | 2850 | register struct window *ow; |
1ae1a37d | 2851 | struct frame *sf; |
7ab12479 | 2852 | |
b7826503 | 2853 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
2854 | |
2855 | w = XWINDOW (window); | |
50e88778 | 2856 | w->frozen_window_start_p = 0; |
7ab12479 | 2857 | |
d834a2e9 | 2858 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2859 | if (EQ (window, selected_window)) |
2860 | return window; | |
2861 | ||
719eaeb1 GM |
2862 | if (!NILP (selected_window)) |
2863 | { | |
2864 | ow = XWINDOW (selected_window); | |
2865 | if (! NILP (ow->buffer)) | |
2866 | set_marker_both (ow->pointm, ow->buffer, | |
2867 | BUF_PT (XBUFFER (ow->buffer)), | |
2868 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2869 | } | |
7ab12479 JB |
2870 | |
2871 | selected_window = window; | |
1ae1a37d | 2872 | sf = SELECTED_FRAME (); |
d1755117 RS |
2873 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
2874 | { | |
2875 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
2876 | /* Use this rather than Fhandle_switch_frame | |
2877 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2878 | move around in the state where a minibuffer in a separate | |
2879 | frame is active. */ | |
2880 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
2881 | } | |
2882 | else | |
1ae1a37d | 2883 | sf->selected_window = window; |
7ab12479 | 2884 | |
14d87dc9 | 2885 | if (NILP (norecord)) |
b7354ddf | 2886 | record_buffer (w->buffer); |
7ab12479 JB |
2887 | Fset_buffer (w->buffer); |
2888 | ||
86e48436 RS |
2889 | XBUFFER (w->buffer)->last_selected_window = window; |
2890 | ||
7ab12479 JB |
2891 | /* Go to the point recorded in the window. |
2892 | This is important when the buffer is in more | |
2893 | than one window. It also matters when | |
2894 | redisplay_window has altered point after scrolling, | |
2895 | because it makes the change only in the window. */ | |
2896 | { | |
2897 | register int new_point = marker_position (w->pointm); | |
2898 | if (new_point < BEGV) | |
2899 | SET_PT (BEGV); | |
a9c95e08 | 2900 | else if (new_point > ZV) |
7ab12479 JB |
2901 | SET_PT (ZV); |
2902 | else | |
2903 | SET_PT (new_point); | |
2904 | } | |
2905 | ||
2906 | windows_or_buffers_changed++; | |
2907 | return window; | |
2908 | } | |
14d87dc9 SM |
2909 | |
2910 | static Lisp_Object | |
2911 | select_window_norecord (window) | |
2912 | Lisp_Object window; | |
2913 | { | |
2914 | return Fselect_window (window, Qt); | |
2915 | } | |
b7354ddf | 2916 | \f |
441a127e RS |
2917 | /* Deiconify the frame containing the window WINDOW, |
2918 | unless it is the selected frame; | |
2919 | then return WINDOW. | |
2920 | ||
2921 | The reason for the exception for the selected frame | |
2922 | is that it seems better not to change the selected frames visibility | |
2923 | merely because of displaying a different buffer in it. | |
2924 | The deiconification is useful when a buffer gets shown in | |
2925 | another frame that you were not using lately. */ | |
d07f802a RS |
2926 | |
2927 | static Lisp_Object | |
2928 | display_buffer_1 (window) | |
2929 | Lisp_Object window; | |
2930 | { | |
1ae1a37d GM |
2931 | Lisp_Object frame = XWINDOW (window)->frame; |
2932 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 2933 | |
d07f802a | 2934 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 2935 | |
1ae1a37d | 2936 | if (!EQ (frame, selected_frame)) |
60117126 RS |
2937 | { |
2938 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2939 | Fmake_frame_visible (frame); |
37962e60 | 2940 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2941 | Fraise_frame (frame); |
60117126 | 2942 | } |
177c0ea7 | 2943 | |
d07f802a RS |
2944 | return window; |
2945 | } | |
2946 | ||
4628f7a4 | 2947 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
fdb82f93 PJ |
2948 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would be created specially. |
2949 | The value is actually t if the frame should be called with default frame | |
2950 | parameters, and a list of frame parameters if they were specified. | |
2951 | See `special-display-buffer-names', and `special-display-regexps'. */) | |
2952 | (buffer_name) | |
4628f7a4 EN |
2953 | Lisp_Object buffer_name; |
2954 | { | |
2955 | Lisp_Object tem; | |
2956 | ||
b7826503 | 2957 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2958 | |
2959 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2960 | if (!NILP (tem)) | |
2961 | return Qt; | |
2962 | ||
2963 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2964 | if (!NILP (tem)) | |
2965 | return XCDR (tem); | |
2966 | ||
2967 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2968 | { | |
2969 | Lisp_Object car = XCAR (tem); | |
2970 | if (STRINGP (car) | |
2971 | && fast_string_match (car, buffer_name) >= 0) | |
2972 | return Qt; | |
2973 | else if (CONSP (car) | |
2974 | && STRINGP (XCAR (car)) | |
2975 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2976 | return XCDR (car); |
4628f7a4 EN |
2977 | } |
2978 | return Qnil; | |
177c0ea7 | 2979 | } |
4628f7a4 EN |
2980 | |
2981 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
fdb82f93 PJ |
2982 | doc: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window. |
2983 | See `same-window-buffer-names' and `same-window-regexps'. */) | |
2984 | (buffer_name) | |
4628f7a4 EN |
2985 | Lisp_Object buffer_name; |
2986 | { | |
2987 | Lisp_Object tem; | |
2988 | ||
b7826503 | 2989 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
2990 | |
2991 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2992 | if (!NILP (tem)) | |
2993 | return Qt; | |
2994 | ||
2995 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2996 | if (!NILP (tem)) | |
2997 | return Qt; | |
2998 | ||
2999 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3000 | { | |
3001 | Lisp_Object car = XCAR (tem); | |
3002 | if (STRINGP (car) | |
3003 | && fast_string_match (car, buffer_name) >= 0) | |
3004 | return Qt; | |
3005 | else if (CONSP (car) | |
3006 | && STRINGP (XCAR (car)) | |
3007 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3008 | return Qt; | |
3009 | } | |
3010 | return Qnil; | |
3011 | } | |
3012 | ||
fdb82f93 | 3013 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3014 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3015 | "BDisplay buffer: \nP", |
3016 | doc: /* Make BUFFER appear in some window but don't select it. | |
3017 | BUFFER can be a buffer or a buffer name. | |
3018 | If BUFFER is shown already in some window, just use that one, | |
3019 | unless the window is the selected window and the optional second | |
3020 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3021 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3022 | Returns the window displaying BUFFER. | |
079d288f | 3023 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3024 | displaying BUFFER, then simply raise that frame. |
3025 | ||
3026 | The variables `special-display-buffer-names', `special-display-regexps', | |
3027 | `same-window-buffer-names', and `same-window-regexps' customize how certain | |
3028 | buffer names are handled. | |
3029 | ||
3030 | If optional argument FRAME is `visible', search all visible frames. | |
3031 | If FRAME is 0, search all visible and iconified frames. | |
3032 | If FRAME is t, search all frames. | |
3033 | If FRAME is a frame, search only that frame. | |
3034 | If FRAME is nil, search only the selected frame | |
3035 | (actually the last nonminibuffer frame), | |
3036 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3037 | which means search visible and iconified frames. | |
3038 | ||
3039 | If `even-window-heights' is non-nil, window heights will be evened out | |
3040 | if displaying the buffer causes two vertically adjacent windows to be | |
3041 | displayed. */) | |
3042 | (buffer, not_this_window, frame) | |
53f76081 | 3043 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3044 | { |
aee631c2 | 3045 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3046 | struct frame *f; |
7ab12479 | 3047 | |
aee631c2 | 3048 | swp = Qnil; |
7ab12479 | 3049 | buffer = Fget_buffer (buffer); |
b7826503 | 3050 | CHECK_BUFFER (buffer); |
7ab12479 | 3051 | |
265a9e55 | 3052 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3053 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3054 | ||
265a9e55 | 3055 | if (NILP (not_this_window) |
7ab12479 | 3056 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3057 | return display_buffer_1 (selected_window); |
7ab12479 | 3058 | |
855d8627 RS |
3059 | /* See if the user has specified this buffer should appear |
3060 | in the selected window. */ | |
3061 | if (NILP (not_this_window)) | |
3062 | { | |
aee631c2 RS |
3063 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3064 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3065 | { |
3066 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3067 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3068 | } |
855d8627 RS |
3069 | } |
3070 | ||
079d288f | 3071 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3072 | look for a window showing BUFFER on any visible or iconified frame. |
3073 | Otherwise search only the current frame. */ | |
53f76081 RS |
3074 | if (! NILP (frame)) |
3075 | tem = frame; | |
9c3da604 GM |
3076 | else if (pop_up_frames |
3077 | || display_buffer_reuse_frames | |
3078 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3079 | XSETFASTINT (tem, 0); |
3080 | else | |
73dc5198 | 3081 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3082 | |
73dc5198 | 3083 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3084 | if (!NILP (window) |
3085 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3086 | return display_buffer_1 (window); |
7ab12479 | 3087 | |
a90712c2 | 3088 | /* Certain buffer names get special handling. */ |
aee631c2 | 3089 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3090 | { |
4628f7a4 EN |
3091 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3092 | if (EQ (tem, Qt)) | |
a90712c2 | 3093 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3094 | if (CONSP (tem)) |
3095 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3096 | } |
3097 | ||
44fa5b1e JB |
3098 | /* If there are no frames open that have more than a minibuffer, |
3099 | we need to create a new frame. */ | |
3100 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3101 | { |
a90712c2 | 3102 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3103 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3104 | return display_buffer_1 (window); |
7ab12479 | 3105 | } |
7ab12479 | 3106 | |
1ae1a37d | 3107 | f = SELECTED_FRAME (); |
43bad991 | 3108 | if (pop_up_windows |
1ae1a37d | 3109 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3110 | /* If the current frame is a special display frame, |
3111 | don't try to reuse its windows. */ | |
1ae1a37d | 3112 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3113 | { |
12cae7c0 KH |
3114 | Lisp_Object frames; |
3115 | ||
37962e60 | 3116 | frames = Qnil; |
1ae1a37d | 3117 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3118 | XSETFRAME (frames, last_nonminibuf_frame); |
a5731348 | 3119 | /* Don't try to create a window if we would get an error. */ |
7ab12479 JB |
3120 | if (split_height_threshold < window_min_height << 1) |
3121 | split_height_threshold = window_min_height << 1; | |
3122 | ||
cee67da9 RS |
3123 | /* Note that both Fget_largest_window and Fget_lru_window |
3124 | ignore minibuffers and dedicated windows. | |
3125 | This means they can return nil. */ | |
7ab12479 | 3126 | |
cee67da9 RS |
3127 | /* If the frame we would try to split cannot be split, |
3128 | try other frames. */ | |
1ae1a37d | 3129 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3130 | { |
3131 | /* Try visible frames first. */ | |
3132 | window = Fget_largest_window (Qvisible); | |
3133 | /* If that didn't work, try iconified frames. */ | |
3134 | if (NILP (window)) | |
3135 | window = Fget_largest_window (make_number (0)); | |
3136 | if (NILP (window)) | |
3137 | window = Fget_largest_window (Qt); | |
3138 | } | |
3139 | else | |
3140 | window = Fget_largest_window (frames); | |
3141 | ||
92cca945 RS |
3142 | /* If we got a tall enough full-width window that can be split, |
3143 | split it. */ | |
265a9e55 | 3144 | if (!NILP (window) |
92cca945 | 3145 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3146 | && window_height (window) >= split_height_threshold |
111e5992 | 3147 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3148 | window = Fsplit_window (window, Qnil, Qnil); |
3149 | else | |
3150 | { | |
1942f68f RS |
3151 | Lisp_Object upper, lower, other; |
3152 | ||
44fa5b1e | 3153 | window = Fget_lru_window (frames); |
92cca945 RS |
3154 | /* If the LRU window is selected, and big enough, |
3155 | and can be split, split it. */ | |
cee67da9 | 3156 | if (!NILP (window) |
92cca945 | 3157 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3158 | && (EQ (window, selected_window) |
3159 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3160 | && window_height (window) >= window_min_height << 1) |
3161 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3162 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3163 | |
cee67da9 | 3164 | /* Try visible frames first. */ |
48d9379d RS |
3165 | if (NILP (window)) |
3166 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3167 | if (NILP (window)) |
3168 | window = Fget_largest_window (Qvisible); | |
3169 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3170 | if (NILP (window)) |
3171 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3172 | if (NILP (window)) |
3173 | window = Fget_largest_window (make_number (0)); | |
3174 | /* Try invisible frames. */ | |
48d9379d RS |
3175 | if (NILP (window)) |
3176 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3177 | if (NILP (window)) |
3178 | window = Fget_largest_window (Qt); | |
3179 | /* As a last resort, make a new frame. */ | |
3180 | if (NILP (window)) | |
3181 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3182 | /* If window appears above or below another, |
3183 | even out their heights. */ | |
cac66e4f | 3184 | other = upper = lower = Qnil; |
1942f68f RS |
3185 | if (!NILP (XWINDOW (window)->prev)) |
3186 | other = upper = XWINDOW (window)->prev, lower = window; | |
3187 | if (!NILP (XWINDOW (window)->next)) | |
3188 | other = lower = XWINDOW (window)->next, upper = window; | |
3189 | if (!NILP (other) | |
6529ed87 | 3190 | && !NILP (Veven_window_heights) |
1942f68f | 3191 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3192 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3193 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3194 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3195 | { |
949cf20f KS |
3196 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3197 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3198 | enlarge_window (upper, |
949cf20f | 3199 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
f95284d2 | 3200 | 0, 0); |
1942f68f | 3201 | } |
7ab12479 JB |
3202 | } |
3203 | } | |
3204 | else | |
3205 | window = Fget_lru_window (Qnil); | |
3206 | ||
949cf20f | 3207 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3208 | return display_buffer_1 (window); |
7ab12479 JB |
3209 | } |
3210 | ||
3211 | void | |
3212 | temp_output_buffer_show (buf) | |
3213 | register Lisp_Object buf; | |
3214 | { | |
3215 | register struct buffer *old = current_buffer; | |
3216 | register Lisp_Object window; | |
3217 | register struct window *w; | |
3218 | ||
bccd3dd1 RS |
3219 | XBUFFER (buf)->directory = current_buffer->directory; |
3220 | ||
7ab12479 | 3221 | Fset_buffer (buf); |
c6367666 | 3222 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3223 | BEGV = BEG; |
3224 | ZV = Z; | |
3225 | SET_PT (BEG); | |
06be4f85 | 3226 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3227 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3228 | #endif |
7ab12479 JB |
3229 | set_buffer_internal (old); |
3230 | ||
3231 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3232 | call1 (Vtemp_buffer_show_function, buf); | |
3233 | else | |
3234 | { | |
53f76081 | 3235 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3236 | |
1ae1a37d | 3237 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3238 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3239 | Vminibuf_scroll_window = window; |
3240 | w = XWINDOW (window); | |
d834a2e9 | 3241 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3242 | XSETFASTINT (w->min_hscroll, 0); |
b73ea88e RS |
3243 | set_marker_restricted_both (w->start, buf, 1, 1); |
3244 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 3245 | |
beb4e312 | 3246 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3247 | and its buffer current. */ |
f52cca03 | 3248 | if (!NILP (Vrun_hooks)) |
2cccc823 | 3249 | { |
f52cca03 RS |
3250 | Lisp_Object tem; |
3251 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
3252 | if (!NILP (tem)) |
3253 | { | |
f52cca03 RS |
3254 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
3255 | if (!NILP (tem)) | |
3256 | { | |
aed13378 | 3257 | int count = SPECPDL_INDEX (); |
14d87dc9 | 3258 | Lisp_Object prev_window, prev_buffer; |
b7354ddf | 3259 | prev_window = selected_window; |
14d87dc9 SM |
3260 | XSETBUFFER (prev_buffer, old); |
3261 | ||
3262 | /* Select the window that was chosen, for running the hook. | |
3263 | Note: Both Fselect_window and select_window_norecord may | |
3264 | set-buffer to the buffer displayed in the window, | |
3265 | so we need to save the current buffer. --stef */ | |
3266 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3267 | record_unwind_protect (select_window_norecord, prev_window); | |
3268 | Fselect_window (window, Qt); | |
beb4e312 | 3269 | Fset_buffer (w->buffer); |
f52cca03 RS |
3270 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
3271 | unbind_to (count, Qnil); | |
3272 | } | |
2cccc823 RS |
3273 | } |
3274 | } | |
3275 | } | |
7ab12479 JB |
3276 | } |
3277 | \f | |
dfcf069d | 3278 | static void |
7ab12479 JB |
3279 | make_dummy_parent (window) |
3280 | Lisp_Object window; | |
3281 | { | |
cffec418 | 3282 | Lisp_Object new; |
7ab12479 | 3283 | register struct window *o, *p; |
cffec418 | 3284 | int i; |
7ab12479 | 3285 | |
cffec418 | 3286 | o = XWINDOW (window); |
26605be9 | 3287 | p = allocate_window (); |
cffec418 | 3288 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3289 | ((struct Lisp_Vector *) p)->contents[i] |
3290 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3291 | XSETWINDOW (new, p); |
7ab12479 | 3292 | |
d834a2e9 | 3293 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
3294 | |
3295 | /* Put new into window structure in place of window */ | |
3296 | replace_window (window, new); | |
3297 | ||
3298 | o->next = Qnil; | |
3299 | o->prev = Qnil; | |
3300 | o->vchild = Qnil; | |
3301 | o->hchild = Qnil; | |
3302 | o->parent = new; | |
3303 | ||
3304 | p->start = Qnil; | |
3305 | p->pointm = Qnil; | |
3306 | p->buffer = Qnil; | |
3307 | } | |
3308 | ||
3309 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3310 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3311 | WINDOW defaults to selected one and SIZE to half its size. | |
3312 | If optional third arg HORFLAG is non-nil, split side by side | |
3313 | and put SIZE columns in the first of the pair. In that case, | |
3314 | SIZE includes that window's scroll bar, or the divider column to its right. */) | |
3315 | (window, size, horflag) | |
77ae0fe3 | 3316 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3317 | { |
3318 | register Lisp_Object new; | |
3319 | register struct window *o, *p; | |
c0807608 | 3320 | FRAME_PTR fo; |
77ae0fe3 | 3321 | register int size_int; |
7ab12479 | 3322 | |
265a9e55 | 3323 | if (NILP (window)) |
7ab12479 JB |
3324 | window = selected_window; |
3325 | else | |
b7826503 | 3326 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3327 | |
3328 | o = XWINDOW (window); | |
c0807608 | 3329 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3330 | |
77ae0fe3 | 3331 | if (NILP (size)) |
7ab12479 | 3332 | { |
265a9e55 | 3333 | if (!NILP (horflag)) |
c0807608 | 3334 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3335 | the usable space in columns by two. |
3336 | We round up, since the left-hand window may include | |
3337 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3338 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3339 | else |
949cf20f | 3340 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3341 | } |
3342 | else | |
3343 | { | |
b7826503 | 3344 | CHECK_NUMBER (size); |
77ae0fe3 | 3345 | size_int = XINT (size); |
7ab12479 JB |
3346 | } |
3347 | ||
3348 | if (MINI_WINDOW_P (o)) | |
3349 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3350 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3351 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3352 | |
a481b3ea | 3353 | check_min_window_sizes (); |
7ab12479 | 3354 | |
265a9e55 | 3355 | if (NILP (horflag)) |
7ab12479 | 3356 | { |
77ae0fe3 KH |
3357 | if (size_int < window_min_height) |
3358 | error ("Window height %d too small (after splitting)", size_int); | |
949cf20f | 3359 | if (size_int + window_min_height > XFASTINT (o->total_lines)) |
37962e60 | 3360 | error ("Window height %d too small (after splitting)", |
949cf20f | 3361 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3362 | if (NILP (o->parent) |
3363 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3364 | { |
3365 | make_dummy_parent (window); | |
3366 | new = o->parent; | |
3367 | XWINDOW (new)->vchild = window; | |
3368 | } | |
3369 | } | |
3370 | else | |
3371 | { | |
77ae0fe3 KH |
3372 | if (size_int < window_min_width) |
3373 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e | 3374 | |
949cf20f | 3375 | if (size_int + window_min_width > XFASTINT (o->total_cols)) |
37962e60 | 3376 | error ("Window width %d too small (after splitting)", |
949cf20f | 3377 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3378 | if (NILP (o->parent) |
3379 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3380 | { |
3381 | make_dummy_parent (window); | |
3382 | new = o->parent; | |
3383 | XWINDOW (new)->hchild = window; | |
3384 | } | |
3385 | } | |
3386 | ||
3387 | /* Now we know that window's parent is a vertical combination | |
3388 | if we are dividing vertically, or a horizontal combination | |
3389 | if we are making side-by-side windows */ | |
3390 | ||
3391 | windows_or_buffers_changed++; | |
c0807608 | 3392 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3393 | new = make_window (); |
3394 | p = XWINDOW (new); | |
3395 | ||
44fa5b1e | 3396 | p->frame = o->frame; |
7ab12479 | 3397 | p->next = o->next; |
265a9e55 | 3398 | if (!NILP (p->next)) |
7ab12479 JB |
3399 | XWINDOW (p->next)->prev = new; |
3400 | p->prev = window; | |
3401 | o->next = new; | |
3402 | p->parent = o->parent; | |
3403 | p->buffer = Qt; | |
5500c422 GM |
3404 | p->window_end_valid = Qnil; |
3405 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3406 | |
949cf20f KS |
3407 | /* Duplicate special geometry settings. */ |
3408 | ||
3409 | p->left_margin_cols = o->left_margin_cols; | |
3410 | p->right_margin_cols = o->right_margin_cols; | |
3411 | p->left_fringe_width = o->left_fringe_width; | |
3412 | p->right_fringe_width = o->right_fringe_width; | |
3413 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3414 | p->scroll_bar_width = o->scroll_bar_width; | |
3415 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3416 | ||
44fa5b1e | 3417 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3418 | |
265a9e55 | 3419 | if (!NILP (horflag)) |
7ab12479 | 3420 | { |
949cf20f KS |
3421 | p->total_lines = o->total_lines; |
3422 | p->top_line = o->top_line; | |
3423 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3424 | XSETFASTINT (o->total_cols, size_int); | |
3425 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3426 | adjust_window_margins (p); | |
3427 | adjust_window_margins (o); | |
7ab12479 JB |
3428 | } |
3429 | else | |
3430 | { | |
949cf20f KS |
3431 | p->left_col = o->left_col; |
3432 | p->total_cols = o->total_cols; | |
3433 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3434 | XSETFASTINT (o->total_lines, size_int); | |
3435 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3436 | } |
3437 | ||
5500c422 GM |
3438 | /* Adjust glyph matrices. */ |
3439 | adjust_glyphs (fo); | |
949cf20f KS |
3440 | |
3441 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3442 | return new; |
3443 | } | |
3444 | \f | |
f95284d2 | 3445 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 3, "p", |
fdb82f93 PJ |
3446 | doc: /* Make current window ARG lines bigger. |
3447 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 RS |
3448 | Interactively, if an argument is not given, make the window one line bigger. |
3449 | ||
3450 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3451 | of the siblings above or to the left of the selected window. Only | |
3452 | siblings to the right or below are changed. */) | |
3453 | (arg, side, preserve_before) | |
3454 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3455 | { |
b7826503 | 3456 | CHECK_NUMBER (arg); |
f95284d2 RS |
3457 | enlarge_window (selected_window, XINT (arg), !NILP (side), |
3458 | !NILP (preserve_before)); | |
543f5fb1 RS |
3459 | |
3460 | if (! NILP (Vwindow_configuration_change_hook)) | |
3461 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3462 | ||
7ab12479 JB |
3463 | return Qnil; |
3464 | } | |
3465 | ||
a5731348 | 3466 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 3, "p", |
fdb82f93 PJ |
3467 | doc: /* Make current window ARG lines smaller. |
3468 | From program, optional second arg non-nil means shrink sideways arg columns. | |
a5731348 SM |
3469 | Interactively, if an argument is not given, make the window one line smaller. |
3470 | ||
3471 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3472 | of the siblings above or to the left of the selected window. Only | |
3473 | siblings to the right or below are changed. */) | |
3474 | (arg, side, preserve_before) | |
3475 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3476 | { |
b7826503 | 3477 | CHECK_NUMBER (arg); |
a5731348 SM |
3478 | enlarge_window (selected_window, -XINT (arg), !NILP (side), |
3479 | !NILP (preserve_before)); | |
543f5fb1 RS |
3480 | |
3481 | if (! NILP (Vwindow_configuration_change_hook)) | |
3482 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3483 | ||
7ab12479 JB |
3484 | return Qnil; |
3485 | } | |
3486 | ||
3487 | int | |
3488 | window_height (window) | |
3489 | Lisp_Object window; | |
3490 | { | |
3491 | register struct window *p = XWINDOW (window); | |
949cf20f | 3492 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3493 | } |
3494 | ||
3495 | int | |
3496 | window_width (window) | |
3497 | Lisp_Object window; | |
3498 | { | |
3499 | register struct window *p = XWINDOW (window); | |
949cf20f | 3500 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3501 | } |
3502 | ||
177c0ea7 | 3503 | |
7ab12479 | 3504 | #define CURBEG(w) \ |
949cf20f | 3505 | *(widthflag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3506 | |
3507 | #define CURSIZE(w) \ | |
949cf20f | 3508 | *(widthflag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 3509 | |
233a4a2c | 3510 | |
f95284d2 | 3511 | /* Enlarge WINDOW by DELTA. WIDTHFLAG non-zero means |
233a4a2c | 3512 | increase its width. Siblings of the selected window are resized to |
f95284d2 RS |
3513 | fulfill the size request. If they become too small in the process, |
3514 | they will be deleted. | |
3515 | ||
3516 | If PRESERVE_BEFORE is nonzero, that means don't alter | |
3517 | the siblings to the left or above WINDOW. */ | |
7ab12479 | 3518 | |
f984d4fc | 3519 | static void |
f95284d2 | 3520 | enlarge_window (window, delta, widthflag, preserve_before) |
86c8e823 | 3521 | Lisp_Object window; |
f95284d2 | 3522 | int delta, widthflag, preserve_before; |
7ab12479 | 3523 | { |
86c8e823 | 3524 | Lisp_Object parent, next, prev; |
233a4a2c | 3525 | struct window *p; |
3578db3c KR |
3526 | Lisp_Object *sizep; |
3527 | int maximum; | |
5e14b1fc AS |
3528 | int (*sizefun) P_ ((Lisp_Object)) |
3529 | = widthflag ? window_width : window_height; | |
233a4a2c | 3530 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3531 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3532 | |
233a4a2c GM |
3533 | /* Check values of window_min_width and window_min_height for |
3534 | validity. */ | |
a481b3ea | 3535 | check_min_window_sizes (); |
7ab12479 | 3536 | |
233a4a2c | 3537 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3538 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3539 | error ("Window is not resizable"); | |
3540 | ||
3541 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3542 | while (1) |
3543 | { | |
3544 | p = XWINDOW (window); | |
3545 | parent = p->parent; | |
177c0ea7 | 3546 | |
265a9e55 | 3547 | if (NILP (parent)) |
7ab12479 JB |
3548 | { |
3549 | if (widthflag) | |
3550 | error ("No other window to side of this one"); | |
3551 | break; | |
3552 | } | |
177c0ea7 | 3553 | |
233a4a2c GM |
3554 | if (widthflag |
3555 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3556 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3557 | break; |
177c0ea7 | 3558 | |
7ab12479 JB |
3559 | window = parent; |
3560 | } | |
3561 | ||
05c2896a | 3562 | sizep = &CURSIZE (window); |
7ab12479 | 3563 | |
7ab12479 JB |
3564 | { |
3565 | register int maxdelta; | |
7ab12479 | 3566 | |
f95284d2 RS |
3567 | /* Compute the maximum size increment this window can have. */ |
3568 | ||
3569 | if (preserve_before) | |
3570 | { | |
3571 | if (!NILP (parent)) | |
3572 | { | |
3573 | maxdelta = (*sizefun) (parent) - XINT (*sizep); | |
3574 | /* Subtract size of siblings before, since we can't take that. */ | |
1ab964d7 | 3575 | maxdelta -= XINT (CURBEG (window)) - XINT (CURBEG (parent)); |
f95284d2 RS |
3576 | } |
3577 | else | |
3578 | maxdelta = (!NILP (p->next) ? ((*sizefun) (p->next) | |
3579 | - window_min_size (XWINDOW (p->next), | |
3580 | widthflag, 0, 0)) | |
3581 | : (delta = 0)); | |
3582 | } | |
3583 | else | |
3584 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) | |
3585 | /* This is a main window followed by a minibuffer. */ | |
3586 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
3587 | - window_min_size (XWINDOW (p->next), | |
3588 | widthflag, 0, 0)) | |
3589 | /* This is a minibuffer following a main window. */ | |
3590 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
3591 | - window_min_size (XWINDOW (p->prev), | |
3592 | widthflag, 0, 0)) | |
3593 | /* This is a frame with only one window, a minibuffer-only | |
3594 | or a minibufferless frame. */ | |
3595 | : (delta = 0)); | |
7ab12479 JB |
3596 | |
3597 | if (delta > maxdelta) | |
3598 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3599 | the full frame, or make the only window aside from the |
3600 | minibuffer the full frame. */ | |
7ab12479 | 3601 | delta = maxdelta; |
6b54027b | 3602 | } |
d5783c40 | 3603 | |
3578db3c | 3604 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3605 | { |
543f5fb1 | 3606 | delete_window (window); |
d5783c40 | 3607 | return; |
6b54027b RS |
3608 | } |
3609 | ||
3610 | if (delta == 0) | |
3611 | return; | |
7ab12479 | 3612 | |
f95284d2 | 3613 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
3614 | maximum = 0; |
3615 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3616 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3617 | widthflag, 0, 0); |
f95284d2 RS |
3618 | if (! preserve_before) |
3619 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
3620 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
3621 | widthflag, 0, 0); | |
db98a733 | 3622 | |
f95284d2 | 3623 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 3624 | if (delta <= maximum) |
7ab12479 | 3625 | { |
db98a733 RS |
3626 | Lisp_Object first_unaffected; |
3627 | Lisp_Object first_affected; | |
233a4a2c | 3628 | int fixed_p; |
db98a733 RS |
3629 | |
3630 | next = p->next; | |
3631 | prev = p->prev; | |
3632 | first_affected = window; | |
3633 | /* Look at one sibling at a time, | |
3634 | moving away from this window in both directions alternately, | |
3635 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 RS |
3636 | while (delta != 0 |
3637 | && (!NILP (next) || (!preserve_before && !NILP (prev)))) | |
db98a733 | 3638 | { |
db98a733 RS |
3639 | if (! NILP (next)) |
3640 | { | |
c1636aa6 | 3641 | int this_one = ((*sizefun) (next) |
233a4a2c | 3642 | - window_min_size (XWINDOW (next), |
f984d4fc | 3643 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3644 | if (!fixed_p) |
3645 | { | |
3646 | if (this_one > delta) | |
3647 | this_one = delta; | |
177c0ea7 | 3648 | |
233a4a2c | 3649 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 3650 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3651 | |
233a4a2c GM |
3652 | delta -= this_one; |
3653 | } | |
177c0ea7 | 3654 | |
db98a733 RS |
3655 | next = XWINDOW (next)->next; |
3656 | } | |
177c0ea7 | 3657 | |
db98a733 RS |
3658 | if (delta == 0) |
3659 | break; | |
177c0ea7 | 3660 | |
f95284d2 | 3661 | if (!preserve_before && ! NILP (prev)) |
db98a733 | 3662 | { |
c1636aa6 | 3663 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3664 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3665 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3666 | if (!fixed_p) |
3667 | { | |
3668 | if (this_one > delta) | |
3669 | this_one = delta; | |
177c0ea7 | 3670 | |
233a4a2c | 3671 | first_affected = prev; |
177c0ea7 | 3672 | |
233a4a2c | 3673 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 3674 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3675 | |
3676 | delta -= this_one; | |
3677 | } | |
177c0ea7 | 3678 | |
db98a733 RS |
3679 | prev = XWINDOW (prev)->prev; |
3680 | } | |
3681 | } | |
3682 | ||
233a4a2c GM |
3683 | xassert (delta == 0); |
3684 | ||
db98a733 RS |
3685 | /* Now recalculate the edge positions of all the windows affected, |
3686 | based on the new sizes. */ | |
3687 | first_unaffected = next; | |
3688 | prev = first_affected; | |
3689 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3690 | prev = next, next = XWINDOW (next)->next) | |
3691 | { | |
3578db3c | 3692 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3693 | /* This does not change size of NEXT, |
3694 | but it propagates the new top edge to its children */ | |
3695 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3696 | } | |
7ab12479 JB |
3697 | } |
3698 | else | |
3699 | { | |
3700 | register int delta1; | |
3701 | register int opht = (*sizefun) (parent); | |
3702 | ||
3578db3c | 3703 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
3704 | { |
3705 | /* If trying to grow this window to or beyond size of the parent, | |
3706 | just delete all the sibling windows. */ | |
dc1ab1ee | 3707 | Lisp_Object start, tem, next; |
daf516d3 | 3708 | |
dc1ab1ee RS |
3709 | start = XWINDOW (parent)->vchild; |
3710 | if (NILP (start)) | |
3711 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 3712 | |
dc1ab1ee RS |
3713 | /* Delete any siblings that come after WINDOW. */ |
3714 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
3715 | while (! NILP (tem)) |
3716 | { | |
3717 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
3718 | delete_window (tem); |
3719 | tem = next; | |
3720 | } | |
3721 | ||
3722 | /* Delete any siblings that come after WINDOW. | |
3723 | Note that if START is not WINDOW, then WINDOW still | |
3724 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
3725 | tem = start; | |
3726 | while (! EQ (tem, window)) | |
3727 | { | |
3728 | next = XWINDOW (tem)->next; | |
3729 | delete_window (tem); | |
daf516d3 RS |
3730 | tem = next; |
3731 | } | |
3732 | } | |
7ab12479 | 3733 | else |
233a4a2c GM |
3734 | { |
3735 | /* Otherwise, make delta1 just right so that if we add | |
3736 | delta1 lines to this window and to the parent, and then | |
3737 | shrink the parent back to its original size, the new | |
3738 | proportional size of this window will increase by delta. | |
3739 | ||
3740 | The function size_window will compute the new height h' | |
3741 | of the window from delta1 as: | |
177c0ea7 | 3742 | |
233a4a2c GM |
3743 | e = delta1/n |
3744 | x = delta1 - delta1/n * n for the 1st resizable child | |
3745 | h' = h + e + x | |
3746 | ||
3747 | where n is the number of children that can be resized. | |
3748 | We can ignore x by choosing a delta1 that is a multiple of | |
3749 | n. We want the height of this window to come out as | |
177c0ea7 | 3750 | |
233a4a2c GM |
3751 | h' = h + delta |
3752 | ||
3753 | So, delta1 must be | |
177c0ea7 | 3754 | |
233a4a2c GM |
3755 | h + e = h + delta |
3756 | delta1/n = delta | |
3757 | delta1 = n * delta. | |
3758 | ||
a5731348 | 3759 | The number of children n equals the number of resizable |
233a4a2c GM |
3760 | children of this window + 1 because we know window itself |
3761 | is resizable (otherwise we would have signalled an error. */ | |
3762 | ||
3763 | struct window *w = XWINDOW (window); | |
3764 | Lisp_Object s; | |
3765 | int n = 1; | |
3766 | ||
3767 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3768 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3769 | ++n; | |
3770 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3771 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3772 | ++n; | |
3773 | ||
3774 | delta1 = n * delta; | |
7ab12479 | 3775 | |
daf516d3 RS |
3776 | /* Add delta1 lines or columns to this window, and to the parent, |
3777 | keeping things consistent while not affecting siblings. */ | |
3778 | XSETINT (CURSIZE (parent), opht + delta1); | |
3779 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
3780 | ||
3781 | /* Squeeze out delta1 lines or columns from our parent, | |
3782 | shriking this window and siblings proportionately. | |
3783 | This brings parent back to correct size. | |
3784 | Delta1 was calculated so this makes this window the desired size, | |
3785 | taking it all out of the siblings. */ | |
3786 | (*setsizefun) (parent, opht, 0); | |
3787 | ||
3788 | } | |
7ab12479 JB |
3789 | } |
3790 | ||
d834a2e9 | 3791 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3792 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3793 | |
3794 | /* Adjust glyph matrices. */ | |
3795 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3796 | } |
c1636aa6 | 3797 | |
7ab12479 JB |
3798 | #undef CURBEG |
3799 | #undef CURSIZE | |
3800 | ||
5500c422 | 3801 | |
f984d4fc GM |
3802 | \f |
3803 | /*********************************************************************** | |
3804 | Resizing Mini-Windows | |
3805 | ***********************************************************************/ | |
3806 | ||
3807 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3808 | |
43b4a21f GM |
3809 | enum save_restore_action |
3810 | { | |
3811 | CHECK_ORIG_SIZES, | |
3812 | SAVE_ORIG_SIZES, | |
3813 | RESTORE_ORIG_SIZES | |
3814 | }; | |
3815 | ||
177c0ea7 | 3816 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 3817 | enum save_restore_action)); |
f984d4fc GM |
3818 | |
3819 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3820 | from lowest windows first. */ | |
3821 | ||
3822 | static void | |
3823 | shrink_window_lowest_first (w, height) | |
3824 | struct window *w; | |
3825 | int height; | |
3826 | { | |
3827 | struct window *c; | |
3828 | Lisp_Object child; | |
3829 | int old_height; | |
3830 | ||
3831 | xassert (!MINI_WINDOW_P (w)); | |
3832 | ||
3833 | /* Set redisplay hints. */ | |
3834 | XSETFASTINT (w->last_modified, 0); | |
3835 | XSETFASTINT (w->last_overlay_modified, 0); | |
3836 | windows_or_buffers_changed++; | |
3837 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3838 | ||
949cf20f KS |
3839 | old_height = XFASTINT (w->total_lines); |
3840 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
3841 | |
3842 | if (!NILP (w->hchild)) | |
3843 | { | |
3844 | for (child = w->hchild; !NILP (child); child = c->next) | |
3845 | { | |
3846 | c = XWINDOW (child); | |
949cf20f | 3847 | c->top_line = w->top_line; |
f984d4fc GM |
3848 | shrink_window_lowest_first (c, height); |
3849 | } | |
3850 | } | |
3851 | else if (!NILP (w->vchild)) | |
3852 | { | |
3853 | Lisp_Object last_child; | |
3854 | int delta = old_height - height; | |
3855 | int last_top; | |
6bbd7a29 GM |
3856 | |
3857 | last_child = Qnil; | |
177c0ea7 | 3858 | |
f984d4fc GM |
3859 | /* Find the last child. We are taking space from lowest windows |
3860 | first, so we iterate over children from the last child | |
3861 | backwards. */ | |
3862 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3863 | last_child = child; | |
3864 | ||
3865 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3866 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3867 | { | |
3868 | int this_one; | |
177c0ea7 | 3869 | |
f984d4fc | 3870 | c = XWINDOW (child); |
949cf20f | 3871 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
3872 | |
3873 | if (this_one > delta) | |
3874 | this_one = delta; | |
3875 | ||
949cf20f | 3876 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
3877 | delta -= this_one; |
3878 | } | |
3879 | ||
3880 | /* Compute new positions. */ | |
949cf20f | 3881 | last_top = XINT (w->top_line); |
f984d4fc GM |
3882 | for (child = w->vchild; !NILP (child); child = c->next) |
3883 | { | |
3884 | c = XWINDOW (child); | |
949cf20f KS |
3885 | c->top_line = make_number (last_top); |
3886 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
3887 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
3888 | } |
3889 | } | |
3890 | } | |
3891 | ||
3892 | ||
43b4a21f GM |
3893 | /* Save, restore, or check positions and sizes in the window tree |
3894 | rooted at W. ACTION says what to do. | |
f984d4fc | 3895 | |
949cf20f KS |
3896 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
3897 | orig_total_lines members are valid for all windows in the window | |
3898 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 3899 | |
43b4a21f | 3900 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 3901 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 3902 | |
949cf20f KS |
3903 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
3904 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
3905 | |
3906 | static int | |
3907 | save_restore_orig_size (w, action) | |
f984d4fc | 3908 | struct window *w; |
43b4a21f | 3909 | enum save_restore_action action; |
f984d4fc | 3910 | { |
43b4a21f GM |
3911 | int success_p = 1; |
3912 | ||
f984d4fc GM |
3913 | while (w) |
3914 | { | |
3915 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3916 | { |
3917 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3918 | success_p = 0; | |
3919 | } | |
f984d4fc | 3920 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3921 | { |
3922 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3923 | success_p = 0; | |
3924 | } | |
177c0ea7 | 3925 | |
43b4a21f | 3926 | switch (action) |
f984d4fc | 3927 | { |
43b4a21f | 3928 | case CHECK_ORIG_SIZES: |
949cf20f | 3929 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
3930 | return 0; |
3931 | break; | |
3932 | ||
3933 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
3934 | w->orig_top_line = w->top_line; |
3935 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
3936 | XSETFASTINT (w->last_modified, 0); |
3937 | XSETFASTINT (w->last_overlay_modified, 0); | |
3938 | break; | |
3939 | ||
3940 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
3941 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
3942 | w->top_line = w->orig_top_line; | |
3943 | w->total_lines = w->orig_total_lines; | |
3944 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
3945 | XSETFASTINT (w->last_modified, 0); |
3946 | XSETFASTINT (w->last_overlay_modified, 0); | |
3947 | break; | |
3948 | ||
3949 | default: | |
3950 | abort (); | |
f984d4fc | 3951 | } |
43b4a21f | 3952 | |
f984d4fc GM |
3953 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3954 | } | |
43b4a21f GM |
3955 | |
3956 | return success_p; | |
f984d4fc GM |
3957 | } |
3958 | ||
3959 | ||
3960 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3961 | without deleting other windows. */ | |
3962 | ||
3963 | void | |
3964 | grow_mini_window (w, delta) | |
3965 | struct window *w; | |
3966 | int delta; | |
3967 | { | |
3968 | struct frame *f = XFRAME (w->frame); | |
3969 | struct window *root; | |
177c0ea7 | 3970 | |
f984d4fc GM |
3971 | xassert (MINI_WINDOW_P (w)); |
3972 | xassert (delta >= 0); | |
177c0ea7 | 3973 | |
f984d4fc GM |
3974 | /* Check values of window_min_width and window_min_height for |
3975 | validity. */ | |
3976 | check_min_window_sizes (); | |
3977 | ||
3978 | /* Compute how much we can enlarge the mini-window without deleting | |
3979 | other windows. */ | |
3980 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3981 | if (delta) | |
3982 | { | |
3983 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 3984 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 3985 | /* Note that the root window may already be smaller than |
eafa3196 | 3986 | min_height. */ |
949cf20f | 3987 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 3988 | } |
177c0ea7 | 3989 | |
f984d4fc GM |
3990 | if (delta) |
3991 | { | |
3992 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3993 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3994 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3995 | |
3996 | /* Shrink other windows. */ | |
949cf20f | 3997 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
3998 | |
3999 | /* Grow the mini-window. */ | |
949cf20f KS |
4000 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4001 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4002 | XSETFASTINT (w->last_modified, 0); |
4003 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4004 | |
f984d4fc GM |
4005 | adjust_glyphs (f); |
4006 | } | |
4007 | } | |
4008 | ||
4009 | ||
86c8e823 GM |
4010 | /* Shrink mini-window W. If there is recorded info about window sizes |
4011 | before a call to grow_mini_window, restore recorded window sizes. | |
4012 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4013 | line. */ | |
f984d4fc GM |
4014 | |
4015 | void | |
4016 | shrink_mini_window (w) | |
4017 | struct window *w; | |
4018 | { | |
4019 | struct frame *f = XFRAME (w->frame); | |
4020 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4021 | ||
43b4a21f | 4022 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4023 | { |
43b4a21f | 4024 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4025 | adjust_glyphs (f); |
4026 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4027 | windows_or_buffers_changed = 1; | |
4028 | } | |
949cf20f | 4029 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4030 | { |
0130fe1a GM |
4031 | /* Distribute the additional lines of the mini-window |
4032 | among the other windows. */ | |
86c8e823 GM |
4033 | Lisp_Object window; |
4034 | XSETWINDOW (window, w); | |
949cf20f | 4035 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0, 0); |
86c8e823 | 4036 | } |
f984d4fc GM |
4037 | } |
4038 | ||
4039 | ||
4040 | \f | |
5500c422 GM |
4041 | /* Mark window cursors off for all windows in the window tree rooted |
4042 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4043 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4044 | the frame are cleared. */ | |
4045 | ||
4046 | void | |
4047 | mark_window_cursors_off (w) | |
4048 | struct window *w; | |
4049 | { | |
4050 | while (w) | |
4051 | { | |
4052 | if (!NILP (w->hchild)) | |
4053 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4054 | else if (!NILP (w->vchild)) | |
4055 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4056 | else | |
4057 | w->phys_cursor_on_p = 0; | |
4058 | ||
4059 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4060 | } | |
4061 | } | |
4062 | ||
4063 | ||
e9c195b1 | 4064 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4065 | |
4066 | int | |
4067 | window_internal_height (w) | |
4068 | struct window *w; | |
4069 | { | |
949cf20f | 4070 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4071 | |
e9c195b1 GM |
4072 | if (!MINI_WINDOW_P (w)) |
4073 | { | |
4074 | if (!NILP (w->parent) | |
4075 | || !NILP (w->vchild) | |
4076 | || !NILP (w->hchild) | |
4077 | || !NILP (w->next) | |
4078 | || !NILP (w->prev) | |
4079 | || WINDOW_WANTS_MODELINE_P (w)) | |
4080 | --ht; | |
7ab12479 | 4081 | |
e9c195b1 GM |
4082 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4083 | --ht; | |
4084 | } | |
7ab12479 JB |
4085 | |
4086 | return ht; | |
4087 | } | |
4088 | ||
535e0b8e JB |
4089 | |
4090 | /* Return the number of columns in W. | |
a3c87d4e | 4091 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4092 | separating W from the sibling to its right. */ |
5500c422 | 4093 | |
535e0b8e | 4094 | int |
949cf20f | 4095 | window_box_text_cols (w) |
535e0b8e JB |
4096 | struct window *w; |
4097 | { | |
5500c422 | 4098 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4099 | int width = XINT (w->total_cols); |
535e0b8e | 4100 | |
949cf20f | 4101 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4102 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4103 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4104 | else if (!FRAME_WINDOW_P (f) | |
4105 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4106 | /* The column of `|' characters separating side-by-side windows |
4107 | occupies one column only. */ | |
4108 | width -= 1; | |
4109 | ||
5500c422 | 4110 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4111 | /* On window-systems, fringes and display margins cannot be |
4112 | used for normal text. */ | |
4113 | width -= (WINDOW_FRINGE_COLS (w) | |
4114 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4115 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4116 | |
4117 | return width; | |
535e0b8e JB |
4118 | } |
4119 | ||
5500c422 GM |
4120 | \f |
4121 | /************************************************************************ | |
4122 | Window Scrolling | |
4123 | ***********************************************************************/ | |
535e0b8e | 4124 | |
5500c422 | 4125 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4126 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4127 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4128 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4129 | means don't signal an error if we try to move over BEGV or ZV, | |
4130 | respectively. */ | |
7ab12479 | 4131 | |
101d1605 RS |
4132 | static void |
4133 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4134 | Lisp_Object window; |
4135 | int n; | |
101d1605 | 4136 | int whole; |
f8026fd8 | 4137 | int noerror; |
5500c422 | 4138 | { |
cba59f77 RS |
4139 | immediate_quit = 1; |
4140 | ||
5500c422 GM |
4141 | /* If we must, use the pixel-based version which is much slower than |
4142 | the line-based one but can handle varying line heights. */ | |
4143 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4144 | window_scroll_pixel_based (window, n, whole, noerror); | |
4145 | else | |
4146 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4147 | |
4148 | immediate_quit = 0; | |
5500c422 GM |
4149 | } |
4150 | ||
4151 | ||
4152 | /* Implementation of window_scroll that works based on pixel line | |
4153 | heights. See the comment of window_scroll for parameter | |
4154 | descriptions. */ | |
4155 | ||
4156 | static void | |
4157 | window_scroll_pixel_based (window, n, whole, noerror) | |
4158 | Lisp_Object window; | |
4159 | int n; | |
4160 | int whole; | |
4161 | int noerror; | |
4162 | { | |
4163 | struct it it; | |
4164 | struct window *w = XWINDOW (window); | |
4165 | struct text_pos start; | |
4166 | Lisp_Object tem; | |
4167 | int this_scroll_margin; | |
4168 | int preserve_y; | |
5cdb3cf3 MB |
4169 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4170 | int vscrolled = 0; | |
5500c422 GM |
4171 | |
4172 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4173 | |
5500c422 | 4174 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4175 | the screen. Allow PT to be partially visible, otherwise |
4176 | something like (scroll-down 1) with PT in the line before | |
4177 | the partially visible one would recenter. */ | |
4178 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
4179 | if (NILP (tem)) |
4180 | { | |
4181 | /* Move backward half the height of the window. Performance note: | |
4182 | vmotion used here is about 10% faster, but would give wrong | |
4183 | results for variable height lines. */ | |
4184 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4185 | it.current_y = it.last_visible_y; | |
202379cf | 4186 | move_it_vertically (&it, - window_box_height (w) / 2); |
177c0ea7 | 4187 | |
5500c422 GM |
4188 | /* The function move_iterator_vertically may move over more than |
4189 | the specified y-distance. If it->w is small, e.g. a | |
4190 | mini-buffer window, we may end up in front of the window's | |
4191 | display area. This is the case when Start displaying at the | |
4192 | start of the line containing PT in this case. */ | |
4193 | if (it.current_y <= 0) | |
4194 | { | |
4195 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4196 | move_it_vertically (&it, 0); | |
4197 | it.current_y = 0; | |
4198 | } | |
4199 | ||
4200 | start = it.current.pos; | |
4201 | } | |
4202 | ||
4203 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
4204 | point in the same window line as it is now, so get that line. */ | |
4205 | if (!NILP (Vscroll_preserve_screen_position)) | |
4206 | { | |
4207 | start_display (&it, w, start); | |
4208 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4209 | preserve_y = it.current_y; | |
4210 | } | |
4211 | else | |
4212 | preserve_y = -1; | |
4213 | ||
4214 | /* Move iterator it from start the specified distance forward or | |
4215 | backward. The result is the new window start. */ | |
4216 | start_display (&it, w, start); | |
4217 | if (whole) | |
4218 | { | |
202379cf | 4219 | int screen_full = (window_box_height (w) |
949cf20f | 4220 | - next_screen_context_lines * FRAME_LINE_HEIGHT (it.f)); |
d4e7cf01 | 4221 | int dy = n * screen_full; |
d72340d4 GM |
4222 | |
4223 | /* Note that move_it_vertically always moves the iterator to the | |
4224 | start of a line. So, if the last line doesn't have a newline, | |
4225 | we would end up at the start of the line ending at ZV. */ | |
4226 | if (dy <= 0) | |
4227 | move_it_vertically_backward (&it, -dy); | |
4228 | else if (dy > 0) | |
4229 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, | |
4230 | MOVE_TO_POS | MOVE_TO_Y); | |
5500c422 GM |
4231 | } |
4232 | else | |
4233 | move_it_by_lines (&it, n, 1); | |
4234 | ||
96ae58c8 RS |
4235 | /* We failed if we find ZV is already on the screen (scrolling up, |
4236 | means there's nothing past the end), or if we can't start any | |
4237 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4238 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4239 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4240 | { |
5cdb3cf3 MB |
4241 | if (IT_CHARPOS (it) == ZV) |
4242 | { | |
07ce8b53 RS |
4243 | if (it.current_y < it.last_visible_y |
4244 | && (it.current_y + it.max_ascent + it.max_descent | |
4245 | >= it.last_visible_y)) | |
a74eca50 GM |
4246 | { |
4247 | /* The last line was only partially visible, make it fully | |
4248 | visible. */ | |
4249 | w->vscroll = (it.last_visible_y | |
4250 | - it.current_y + it.max_ascent + it.max_descent); | |
4251 | adjust_glyphs (it.f); | |
4252 | } | |
5cdb3cf3 MB |
4253 | else if (noerror) |
4254 | return; | |
4255 | else | |
4256 | Fsignal (Qend_of_buffer, Qnil); | |
4257 | } | |
5500c422 | 4258 | else |
5cdb3cf3 MB |
4259 | { |
4260 | if (w->vscroll != 0) | |
4261 | /* The first line was only partially visible, make it fully | |
4262 | visible. */ | |
4263 | w->vscroll = 0; | |
4264 | else if (noerror) | |
4265 | return; | |
4266 | else | |
4267 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4268 | } | |
4269 | ||
4270 | /* If control gets here, then we vscrolled. */ | |
4271 | ||
4272 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4273 | ||
4274 | /* Don't try to change the window start below. */ | |
4275 | vscrolled = 1; | |
5500c422 GM |
4276 | } |
4277 | ||
5cdb3cf3 MB |
4278 | if (! vscrolled) |
4279 | { | |
dad67609 RS |
4280 | int pos = IT_CHARPOS (it); |
4281 | int bytepos; | |
e68def1e AS |
4282 | |
4283 | /* If in the middle of a multi-glyph character move forward to | |
4284 | the next character. */ | |
4285 | if (in_display_vector_p (&it)) | |
4286 | { | |
4287 | ++pos; | |
4288 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4289 | } | |
4290 | ||
5cdb3cf3 | 4291 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4292 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4293 | w->buffer); |
dad67609 RS |
4294 | bytepos = XMARKER (w->start)->bytepos; |
4295 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4296 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4297 | w->update_mode_line = Qt; |
4298 | XSETFASTINT (w->last_modified, 0); | |
4299 | XSETFASTINT (w->last_overlay_modified, 0); | |
4300 | /* Set force_start so that redisplay_window will run the | |
4301 | window-scroll-functions. */ | |
4302 | w->force_start = Qt; | |
4303 | } | |
177c0ea7 | 4304 | |
5500c422 | 4305 | it.current_y = it.vpos = 0; |
177c0ea7 | 4306 | |
5500c422 GM |
4307 | /* Preserve the screen position if we must. */ |
4308 | if (preserve_y >= 0) | |
4309 | { | |
4310 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
4311 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4312 | } | |
4313 | else | |
4314 | { | |
4315 | /* Move PT out of scroll margins. */ | |
4316 | this_scroll_margin = max (0, scroll_margin); | |
949cf20f KS |
4317 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
4318 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5500c422 GM |
4319 | |
4320 | if (n > 0) | |
4321 | { | |
4322 | /* We moved the window start towards ZV, so PT may be now | |
4323 | in the scroll margin at the top. */ | |
4324 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4325 | while (it.current_y < this_scroll_margin) | |
e9b2c961 RS |
4326 | { |
4327 | int prev = it.current_y; | |
4328 | move_it_by_lines (&it, 1, 1); | |
4329 | if (prev == it.current_y) | |
4330 | break; | |
4331 | } | |
5500c422 GM |
4332 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4333 | } | |
4334 | else if (n < 0) | |
4335 | { | |
5cdb3cf3 MB |
4336 | int charpos, bytepos; |
4337 | ||
5500c422 GM |
4338 | /* We moved the window start towards BEGV, so PT may be now |
4339 | in the scroll margin at the bottom. */ | |
4340 | move_it_to (&it, PT, -1, | |
4341 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4342 | MOVE_TO_POS | MOVE_TO_Y); | |
5cdb3cf3 MB |
4343 | |
4344 | /* Save our position, in case it's correct. */ | |
4345 | charpos = IT_CHARPOS (it); | |
4346 | bytepos = IT_BYTEPOS (it); | |
177c0ea7 | 4347 | |
5cdb3cf3 MB |
4348 | /* See if point is on a partially visible line at the end. */ |
4349 | move_it_by_lines (&it, 1, 1); | |
4350 | if (it.current_y > it.last_visible_y) | |
4351 | /* The last line was only partially visible, so back up two | |
4352 | lines to make sure we're on a fully visible line. */ | |
4353 | { | |
4354 | move_it_by_lines (&it, -2, 0); | |
4355 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4356 | } | |
4357 | else | |
4358 | /* No, the position we saved is OK, so use it. */ | |
4359 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4360 | } |
4361 | } | |
4362 | } | |
4363 | ||
4364 | ||
4365 | /* Implementation of window_scroll that works based on screen lines. | |
4366 | See the comment of window_scroll for parameter descriptions. */ | |
4367 | ||
4368 | static void | |
4369 | window_scroll_line_based (window, n, whole, noerror) | |
4370 | Lisp_Object window; | |
4371 | int n; | |
4372 | int whole; | |
4373 | int noerror; | |
7ab12479 JB |
4374 | { |
4375 | register struct window *w = XWINDOW (window); | |
5500c422 | 4376 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4377 | register int pos, pos_byte; |
7ab12479 JB |
4378 | register int ht = window_internal_height (w); |
4379 | register Lisp_Object tem; | |
4380 | int lose; | |
5500c422 | 4381 | Lisp_Object bolp; |
345d45b2 | 4382 | int startpos; |
101d1605 RS |
4383 | struct position posit; |
4384 | int original_vpos; | |
4385 | ||
d4e7cf01 GM |
4386 | /* If scrolling screen-fulls, compute the number of lines to |
4387 | scroll from the window's height. */ | |
4388 | if (whole) | |
4389 | n *= max (1, ht - next_screen_context_lines); | |
4390 | ||
101d1605 RS |
4391 | startpos = marker_position (w->start); |
4392 | ||
4393 | posit = *compute_motion (startpos, 0, 0, 0, | |
4394 | PT, ht, 0, | |
949cf20f | 4395 | window_box_text_cols (w), XINT (w->hscroll), |
101d1605 RS |
4396 | 0, w); |
4397 | original_vpos = posit.vpos; | |
0a1f771a | 4398 | |
d834a2e9 | 4399 | XSETFASTINT (tem, PT); |
6ffdb539 | 4400 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4401 | |
265a9e55 | 4402 | if (NILP (tem)) |
7ab12479 | 4403 | { |
cd2be1dd | 4404 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4405 | startpos = PT; |
7ab12479 JB |
4406 | } |
4407 | ||
345d45b2 | 4408 | SET_PT (startpos); |
5ce7b543 | 4409 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4410 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4411 | pos = PT; |
b73ea88e | 4412 | pos_byte = PT_BYTE; |
7ab12479 | 4413 | bolp = Fbolp (); |
b73ea88e | 4414 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4415 | |
4416 | if (lose) | |
f8026fd8 JB |
4417 | { |
4418 | if (noerror) | |
4419 | return; | |
4420 | else | |
4421 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4422 | } | |
7ab12479 JB |
4423 | |
4424 | if (pos < ZV) | |
7ab12479 | 4425 | { |
0c7da84e RS |
4426 | int this_scroll_margin = scroll_margin; |
4427 | ||
4428 | /* Don't use a scroll margin that is negative or too large. */ | |
4429 | if (this_scroll_margin < 0) | |
4430 | this_scroll_margin = 0; | |
4431 | ||
949cf20f KS |
4432 | if (XINT (w->total_lines) < 4 * scroll_margin) |
4433 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 4434 | |
b73ea88e | 4435 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4436 | w->start_at_line_beg = bolp; |
4437 | w->update_mode_line = Qt; | |
d834a2e9 | 4438 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4439 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4440 | /* Set force_start so that redisplay_window will run |
4441 | the window-scroll-functions. */ | |
4442 | w->force_start = Qt; | |
0c7da84e | 4443 | |
5500c422 | 4444 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4445 | { |
b73ea88e | 4446 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4447 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4448 | } |
101d1605 RS |
4449 | /* If we scrolled forward, put point enough lines down |
4450 | that it is outside the scroll margin. */ | |
4451 | else if (n > 0) | |
0c7da84e | 4452 | { |
101d1605 RS |
4453 | int top_margin; |
4454 | ||
4455 | if (this_scroll_margin > 0) | |
4456 | { | |
b73ea88e | 4457 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4458 | Fvertical_motion (make_number (this_scroll_margin), window); |
4459 | top_margin = PT; | |
4460 | } | |
4461 | else | |
4462 | top_margin = pos; | |
4463 | ||
4464 | if (top_margin <= opoint) | |
b73ea88e | 4465 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4466 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4467 | { |
b73ea88e | 4468 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4469 | Fvertical_motion (make_number (original_vpos), window); |
4470 | } | |
9317a85d | 4471 | else |
335406fc | 4472 | SET_PT (top_margin); |
0c7da84e | 4473 | } |
101d1605 | 4474 | else if (n < 0) |
7ab12479 | 4475 | { |
101d1605 RS |
4476 | int bottom_margin; |
4477 | ||
0c7da84e RS |
4478 | /* If we scrolled backward, put point near the end of the window |
4479 | but not within the scroll margin. */ | |
b73ea88e | 4480 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4481 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4482 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4483 | bottom_margin = PT; | |
4484 | else | |
4485 | bottom_margin = PT + 1; | |
4486 | ||
4487 | if (bottom_margin > opoint) | |
b73ea88e | 4488 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4489 | else |
101d1605 | 4490 | { |
5500c422 | 4491 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4492 | { |
b73ea88e | 4493 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4494 | Fvertical_motion (make_number (original_vpos), window); |
4495 | } | |
4496 | else | |
4497 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4498 | } |
7ab12479 JB |
4499 | } |
4500 | } | |
4501 | else | |
f8026fd8 JB |
4502 | { |
4503 | if (noerror) | |
4504 | return; | |
4505 | else | |
4506 | Fsignal (Qend_of_buffer, Qnil); | |
4507 | } | |
7ab12479 | 4508 | } |
5500c422 GM |
4509 | |
4510 | ||
4511 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4512 | screen-full which is defined as the height of the window minus | |
4513 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4514 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4515 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4516 | |
4517 | static void | |
4518 | scroll_command (n, direction) | |
5500c422 | 4519 | Lisp_Object n; |
7ab12479 JB |
4520 | int direction; |
4521 | { | |
331379bf | 4522 | int count = SPECPDL_INDEX (); |
7ab12479 | 4523 | |
5500c422 GM |
4524 | xassert (abs (direction) == 1); |
4525 | ||
4526 | /* If selected window's buffer isn't current, make it current for | |
4527 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4528 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4529 | { |
4530 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4531 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4532 | |
4533 | /* Make redisplay consider other windows than just selected_window. */ | |
4534 | ++windows_or_buffers_changed; | |
95605e15 | 4535 | } |
7ab12479 | 4536 | |
265a9e55 | 4537 | if (NILP (n)) |
d4e7cf01 | 4538 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4539 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4540 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4541 | else |
4542 | { | |
4543 | n = Fprefix_numeric_value (n); | |
101d1605 | 4544 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4545 | } |
95605e15 JB |
4546 | |
4547 | unbind_to (count, Qnil); | |
7ab12479 JB |
4548 | } |
4549 | ||
4550 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
fdb82f93 PJ |
4551 | doc: /* Scroll text of current window upward ARG lines; or near full screen if no ARG. |
4552 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4553 | Negative ARG means scroll downward. | |
4554 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4555 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4556 | (arg) | |
413430c5 | 4557 | Lisp_Object arg; |
7ab12479 | 4558 | { |
413430c5 | 4559 | scroll_command (arg, 1); |
7ab12479 JB |
4560 | return Qnil; |
4561 | } | |
4562 | ||
4563 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
fdb82f93 PJ |
4564 | doc: /* Scroll text of current window down ARG lines; or near full screen if no ARG. |
4565 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4566 | Negative ARG means scroll upward. | |
4567 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4568 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
4569 | (arg) | |
413430c5 | 4570 | Lisp_Object arg; |
7ab12479 | 4571 | { |
413430c5 | 4572 | scroll_command (arg, -1); |
7ab12479 JB |
4573 | return Qnil; |
4574 | } | |
ccd0664b RS |
4575 | \f |
4576 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 PJ |
4577 | doc: /* Return the other window for \"other window scroll\" commands. |
4578 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4579 | specifies the window. | |
4580 | If `other-window-scroll-buffer' is non-nil, a window | |
4581 | showing that buffer is used. */) | |
4582 | () | |
7ab12479 | 4583 | { |
ccd0664b | 4584 | Lisp_Object window; |
7ab12479 JB |
4585 | |
4586 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4587 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4588 | window = Vminibuf_scroll_window; |
4589 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4590 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4591 | { |
4592 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4593 | if (NILP (window)) |
53f76081 | 4594 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4595 | } |
4596 | else | |
dbc4e1c1 JB |
4597 | { |
4598 | /* Nothing specified; look for a neighboring window on the same | |
4599 | frame. */ | |
4600 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4601 | ||
4602 | if (EQ (window, selected_window)) | |
4603 | /* That didn't get us anywhere; look for a window on another | |
4604 | visible frame. */ | |
4605 | do | |
4606 | window = Fnext_window (window, Qnil, Qt); | |
4607 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4608 | && ! EQ (window, selected_window)); | |
4609 | } | |
4610 | ||
b7826503 | 4611 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4612 | |
4613 | if (EQ (window, selected_window)) | |
4614 | error ("There is no other window"); | |
4615 | ||
ccd0664b RS |
4616 | return window; |
4617 | } | |
4618 | ||
4619 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4620 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4621 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4622 | The next window is the one below the current one; or the one at the top | |
4623 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4624 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4625 | When calling from a program, supply as argument a number, nil, or `-'. | |
4626 | ||
4627 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4628 | specifies the window to scroll. | |
4629 | If `other-window-scroll-buffer' is non-nil, scroll the window | |
4630 | showing that buffer, popping the buffer up if necessary. */) | |
4631 | (arg) | |
d4e7cf01 | 4632 | Lisp_Object arg; |
ccd0664b | 4633 | { |
d4e7cf01 GM |
4634 | Lisp_Object window; |
4635 | struct window *w; | |
331379bf | 4636 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
4637 | |
4638 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4639 | w = XWINDOW (window); |
7ab12479 JB |
4640 | |
4641 | /* Don't screw up if window_scroll gets an error. */ | |
4642 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4643 | ++windows_or_buffers_changed; |
7ab12479 JB |
4644 | |
4645 | Fset_buffer (w->buffer); | |
4646 | SET_PT (marker_position (w->pointm)); | |
4647 | ||
413430c5 | 4648 | if (NILP (arg)) |
d4e7cf01 | 4649 | window_scroll (window, 1, 1, 1); |
413430c5 | 4650 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4651 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4652 | else |
4653 | { | |
413430c5 EN |
4654 | if (CONSP (arg)) |
4655 | arg = Fcar (arg); | |
b7826503 | 4656 | CHECK_NUMBER (arg); |
101d1605 | 4657 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4658 | } |
4659 | ||
b73ea88e | 4660 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4661 | unbind_to (count, Qnil); |
7ab12479 JB |
4662 | |
4663 | return Qnil; | |
4664 | } | |
4665 | \f | |
644b477c | 4666 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
fdb82f93 | 4667 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4668 | Default for ARG is window width minus 2. |
4669 | Value is the total amount of leftward horizontal scrolling in | |
4670 | effect after the change. | |
4671 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4672 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4673 | will not scroll a window to a column less than the value returned | |
4674 | by this function. */) | |
fdb82f93 | 4675 | (arg) |
7ab12479 JB |
4676 | register Lisp_Object arg; |
4677 | { | |
c67fa410 GM |
4678 | Lisp_Object result; |
4679 | int hscroll; | |
4680 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4681 | |
265a9e55 | 4682 | if (NILP (arg)) |
949cf20f | 4683 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
4684 | else |
4685 | arg = Fprefix_numeric_value (arg); | |
4686 | ||
c67fa410 GM |
4687 | hscroll = XINT (w->hscroll) + XINT (arg); |
4688 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4689 | ||
f5686fbd | 4690 | if (interactive_p (0)) |
c67fa410 GM |
4691 | w->min_hscroll = w->hscroll; |
4692 | ||
4693 | return result; | |
7ab12479 JB |
4694 | } |
4695 | ||
644b477c | 4696 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
fdb82f93 | 4697 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4698 | Default for ARG is window width minus 2. |
4699 | Value is the total amount of leftward horizontal scrolling in | |
4700 | effect after the change. | |
4701 | If `automatic-hscrolling' is non-nil, the argument ARG modifies | |
4702 | a lower bound for automatic scrolling, i.e. automatic scrolling | |
4703 | will not scroll a window to a column less than the value returned | |
4704 | by this function. */) | |
fdb82f93 | 4705 | (arg) |
7ab12479 JB |
4706 | register Lisp_Object arg; |
4707 | { | |
c67fa410 GM |
4708 | Lisp_Object result; |
4709 | int hscroll; | |
4710 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4711 | |
265a9e55 | 4712 | if (NILP (arg)) |
949cf20f | 4713 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
4714 | else |
4715 | arg = Fprefix_numeric_value (arg); | |
4716 | ||
c67fa410 GM |
4717 | hscroll = XINT (w->hscroll) - XINT (arg); |
4718 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 4719 | |
f5686fbd | 4720 | if (interactive_p (0)) |
c67fa410 GM |
4721 | w->min_hscroll = w->hscroll; |
4722 | ||
4723 | return result; | |
7ab12479 JB |
4724 | } |
4725 | ||
fa832261 KS |
4726 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
4727 | doc: /* Return the window which was selected when entering the minibuffer. | |
4728 | Returns nil, if current window is not a minibuffer window. */) | |
4729 | () | |
4730 | { | |
4731 | if (minibuf_level > 0 | |
4732 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
4733 | && !NILP (minibuf_selected_window) | |
4734 | && WINDOW_LIVE_P (minibuf_selected_window)) | |
4735 | return minibuf_selected_window; | |
4736 | ||
4737 | return Qnil; | |
4738 | } | |
4739 | ||
12c8b416 GM |
4740 | /* Value is the number of lines actually displayed in window W, |
4741 | as opposed to its height. */ | |
4742 | ||
4743 | static int | |
4744 | displayed_window_lines (w) | |
4745 | struct window *w; | |
4746 | { | |
4747 | struct it it; | |
4748 | struct text_pos start; | |
4749 | int height = window_box_height (w); | |
4750 | struct buffer *old_buffer; | |
4751 | int bottom_y; | |
4752 | ||
4753 | if (XBUFFER (w->buffer) != current_buffer) | |
4754 | { | |
4755 | old_buffer = current_buffer; | |
4756 | set_buffer_internal (XBUFFER (w->buffer)); | |
4757 | } | |
4758 | else | |
4759 | old_buffer = NULL; | |
4760 | ||
521b203e GM |
4761 | /* In case W->start is out of the accessible range, do something |
4762 | reasonable. This happens in Info mode when Info-scroll-down | |
4763 | calls (recenter -1) while W->start is 1. */ | |
4764 | if (XMARKER (w->start)->charpos < BEGV) | |
4765 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4766 | else if (XMARKER (w->start)->charpos > ZV) | |
4767 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4768 | else | |
4769 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4770 | ||
12c8b416 GM |
4771 | start_display (&it, w, start); |
4772 | move_it_vertically (&it, height); | |
c8bc6f65 | 4773 | bottom_y = line_bottom_y (&it); |
12c8b416 | 4774 | |
1de65f51 RS |
4775 | /* rms: On a non-window display, |
4776 | the value of it.vpos at the bottom of the screen | |
4777 | seems to be 1 larger than window_box_height (w). | |
4778 | This kludge fixes a bug whereby (move-to-window-line -1) | |
4779 | when ZV is on the last screen line | |
4780 | moves to the previous screen line instead of the last one. */ | |
4781 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
4782 | height++; | |
4783 | ||
12c8b416 GM |
4784 | /* Add in empty lines at the bottom of the window. */ |
4785 | if (bottom_y < height) | |
4786 | { | |
949cf20f | 4787 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 4788 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
4789 | } |
4790 | ||
c8bc6f65 GM |
4791 | if (old_buffer) |
4792 | set_buffer_internal (old_buffer); | |
4793 | ||
12c8b416 GM |
4794 | return it.vpos; |
4795 | } | |
4796 | ||
4797 | ||
7ab12479 | 4798 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
4799 | doc: /* Center point in window and redisplay frame. |
4800 | With prefix argument ARG, recenter putting point on screen line ARG | |
4801 | relative to the current window. If ARG is negative, it counts up from the | |
4802 | bottom of the window. (ARG should be less than the height of the window.) | |
4803 | ||
4804 | If ARG is omitted or nil, erase the entire frame and then | |
4805 | redraw with point in the center of the current window. | |
4806 | Just C-u as prefix means put point in the center of the window | |
4807 | and redisplay normally--don't erase and redraw the frame. */) | |
4808 | (arg) | |
413430c5 | 4809 | register Lisp_Object arg; |
7ab12479 | 4810 | { |
6df47b59 | 4811 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
4812 | struct buffer *buf = XBUFFER (w->buffer); |
4813 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
4814 | int center_p = 0; |
4815 | int charpos, bytepos; | |
7ab12479 | 4816 | |
0fa5d25b RS |
4817 | /* If redisplay is suppressed due to an error, try again. */ |
4818 | obuf->display_error_modiff = 0; | |
4819 | ||
413430c5 | 4820 | if (NILP (arg)) |
7ab12479 | 4821 | { |
f02d6d5c KH |
4822 | int i; |
4823 | ||
4824 | /* Invalidate pixel data calculated for all compositions. */ | |
4825 | for (i = 0; i < n_compositions; i++) | |
4826 | composition_table[i]->font = NULL; | |
7ab12479 | 4827 | |
527b6458 | 4828 | Fredraw_frame (w->frame); |
44fa5b1e | 4829 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 4830 | center_p = 1; |
7ab12479 | 4831 | } |
413430c5 | 4832 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 4833 | center_p = 1; |
7ab12479 JB |
4834 | else |
4835 | { | |
413430c5 | 4836 | arg = Fprefix_numeric_value (arg); |
b7826503 | 4837 | CHECK_NUMBER (arg); |
7ab12479 JB |
4838 | } |
4839 | ||
478292ed | 4840 | set_buffer_internal (buf); |
7ab12479 | 4841 | |
521b203e | 4842 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
4843 | have variable-height lines and centering point on the basis of |
4844 | line counts would lead to strange effects. */ | |
521b203e | 4845 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 4846 | { |
6df47b59 GM |
4847 | if (center_p) |
4848 | { | |
521b203e GM |
4849 | struct it it; |
4850 | struct text_pos pt; | |
177c0ea7 | 4851 | |
521b203e GM |
4852 | SET_TEXT_POS (pt, PT, PT_BYTE); |
4853 | start_display (&it, w, pt); | |
202379cf | 4854 | move_it_vertically (&it, - window_box_height (w) / 2); |
521b203e GM |
4855 | charpos = IT_CHARPOS (it); |
4856 | bytepos = IT_BYTEPOS (it); | |
6df47b59 GM |
4857 | } |
4858 | else if (XINT (arg) < 0) | |
4859 | { | |
521b203e GM |
4860 | struct it it; |
4861 | struct text_pos pt; | |
d466fa4d | 4862 | int y0, y1, h, nlines; |
177c0ea7 | 4863 | |
521b203e GM |
4864 | SET_TEXT_POS (pt, PT, PT_BYTE); |
4865 | start_display (&it, w, pt); | |
4866 | y0 = it.current_y; | |
4867 | ||
d466fa4d | 4868 | /* The amount of pixels we have to move back is the window |
521b203e GM |
4869 | height minus what's displayed in the line containing PT, |
4870 | and the lines below. */ | |
d466fa4d GM |
4871 | nlines = - XINT (arg) - 1; |
4872 | move_it_by_lines (&it, nlines, 1); | |
4873 | ||
201c831a | 4874 | y1 = line_bottom_y (&it); |
d466fa4d GM |
4875 | |
4876 | /* If we can't move down NLINES lines because we hit | |
4877 | the end of the buffer, count in some empty lines. */ | |
4878 | if (it.vpos < nlines) | |
949cf20f | 4879 | y1 += (nlines - it.vpos) * FRAME_LINE_HEIGHT (it.f); |
177c0ea7 | 4880 | |
201c831a GM |
4881 | h = window_box_height (w) - (y1 - y0); |
4882 | ||
521b203e | 4883 | start_display (&it, w, pt); |
201c831a | 4884 | move_it_vertically (&it, - h); |
521b203e GM |
4885 | charpos = IT_CHARPOS (it); |
4886 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 4887 | } |
521b203e GM |
4888 | else |
4889 | { | |
4890 | struct position pos; | |
4891 | pos = *vmotion (PT, - XINT (arg), w); | |
4892 | charpos = pos.bufpos; | |
4893 | bytepos = pos.bytepos; | |
4894 | } | |
4895 | } | |
4896 | else | |
4897 | { | |
4898 | struct position pos; | |
4899 | int ht = window_internal_height (w); | |
4900 | ||
4901 | if (center_p) | |
4902 | arg = make_number (ht / 2); | |
4903 | else if (XINT (arg) < 0) | |
4904 | arg = make_number (XINT (arg) + ht); | |
177c0ea7 | 4905 | |
6df47b59 GM |
4906 | pos = *vmotion (PT, - XINT (arg), w); |
4907 | charpos = pos.bufpos; | |
4908 | bytepos = pos.bytepos; | |
4909 | } | |
4910 | ||
4911 | /* Set the new window start. */ | |
4912 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 4913 | w->window_end_valid = Qnil; |
177c0ea7 | 4914 | |
95605b1b RS |
4915 | w->optional_new_start = Qt; |
4916 | ||
6df47b59 GM |
4917 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
4918 | w->start_at_line_beg = Qt; | |
4919 | else | |
4920 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 4921 | |
478292ed | 4922 | set_buffer_internal (obuf); |
7ab12479 JB |
4923 | return Qnil; |
4924 | } | |
b7617575 GM |
4925 | |
4926 | ||
81fe0836 | 4927 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
4928 | 0, 1, 0, |
4929 | doc: /* Return the height in lines of the text display area of WINDOW. | |
4930 | This doesn't include the mode-line (or header-line if any) or any | |
4931 | partial-height lines in the text display area. */) | |
4932 | (window) | |
81fe0836 MB |
4933 | Lisp_Object window; |
4934 | { | |
4935 | struct window *w = decode_window (window); | |
4936 | int pixel_height = window_box_height (w); | |
949cf20f | 4937 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
4938 | return make_number (line_height); |
4939 | } | |
4940 | ||
4941 | ||
7ab12479 JB |
4942 | \f |
4943 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
4944 | 1, 1, "P", |
4945 | doc: /* Position point relative to window. | |
4946 | With no argument, position point at center of window. | |
4947 | An argument specifies vertical position within the window; | |
4948 | zero means top of window, negative means relative to bottom of window. */) | |
4949 | (arg) | |
b7617575 | 4950 | Lisp_Object arg; |
7ab12479 | 4951 | { |
b7617575 GM |
4952 | struct window *w = XWINDOW (selected_window); |
4953 | int lines, start; | |
540b6aa0 | 4954 | Lisp_Object window; |
7ab12479 | 4955 | |
b7617575 | 4956 | window = selected_window; |
7ab12479 JB |
4957 | start = marker_position (w->start); |
4958 | if (start < BEGV || start > ZV) | |
4959 | { | |
b7617575 | 4960 | int height = window_internal_height (w); |
cd2be1dd | 4961 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4962 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4963 | w->start_at_line_beg = Fbolp (); |
4964 | w->force_start = Qt; | |
4965 | } | |
4966 | else | |
b73ea88e | 4967 | Fgoto_char (w->start); |
7ab12479 | 4968 | |
b7617575 GM |
4969 | lines = displayed_window_lines (w); |
4970 | if (NILP (arg)) | |
4971 | XSETFASTINT (arg, lines / 2); | |
4972 | else | |
4973 | { | |
4974 | arg = Fprefix_numeric_value (arg); | |
4975 | if (XINT (arg) < 0) | |
4976 | XSETINT (arg, XINT (arg) + lines); | |
4977 | } | |
4978 | ||
c8bc6f65 | 4979 | /* Skip past a partially visible first line. */ |
163784df | 4980 | if (w->vscroll) |
163784df MB |
4981 | XSETINT (arg, XINT (arg) + 1); |
4982 | ||
540b6aa0 | 4983 | return Fvertical_motion (arg, window); |
7ab12479 | 4984 | } |
5500c422 GM |
4985 | |
4986 | ||
7ab12479 | 4987 | \f |
5500c422 GM |
4988 | /*********************************************************************** |
4989 | Window Configuration | |
4990 | ***********************************************************************/ | |
4991 | ||
7ab12479 JB |
4992 | struct save_window_data |
4993 | { | |
f5ccc0cc | 4994 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4995 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 4996 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 4997 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4998 | Lisp_Object selected_frame; |
7ab12479 JB |
4999 | Lisp_Object current_window; |
5000 | Lisp_Object current_buffer; | |
5001 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5002 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5003 | Lisp_Object root_window; |
bdc727bf | 5004 | Lisp_Object focus_frame; |
756b6edc RS |
5005 | /* Record the values of window-min-width and window-min-height |
5006 | so that window sizes remain consistent with them. */ | |
5007 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
5008 | /* A vector, each of whose elements is a struct saved_window |
5009 | for one window. */ | |
7ab12479 JB |
5010 | Lisp_Object saved_windows; |
5011 | }; | |
ff06df24 | 5012 | |
cbff28e8 | 5013 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5014 | struct saved_window |
ea68264b GM |
5015 | { |
5016 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
5017 | EMACS_INT size_from_Lisp_Vector_struct; | |
5018 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 5019 | |
ea68264b GM |
5020 | Lisp_Object window; |
5021 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5022 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5023 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5024 | Lisp_Object parent, prev; |
5025 | Lisp_Object start_at_line_beg; | |
5026 | Lisp_Object display_table; | |
949cf20f KS |
5027 | Lisp_Object orig_top_line, orig_total_lines; |
5028 | Lisp_Object left_margin_cols, right_margin_cols; | |
5029 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5030 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
ea68264b GM |
5031 | }; |
5032 | ||
949cf20f | 5033 | #define SAVED_WINDOW_VECTOR_SIZE 24 /* Arg to Fmake_vector */ |
7ab12479 JB |
5034 | |
5035 | #define SAVED_WINDOW_N(swv,n) \ | |
5036 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5037 | ||
5038 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5039 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5040 | (object) | |
413430c5 | 5041 | Lisp_Object object; |
7ab12479 | 5042 | { |
413430c5 | 5043 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
5044 | return Qt; |
5045 | return Qnil; | |
5046 | } | |
5047 | ||
3f8ab7bd | 5048 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5049 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5050 | (config) | |
3f8ab7bd RS |
5051 | Lisp_Object config; |
5052 | { | |
5053 | register struct save_window_data *data; | |
5054 | struct Lisp_Vector *saved_windows; | |
5055 | ||
5056 | if (! WINDOW_CONFIGURATIONP (config)) | |
5057 | wrong_type_argument (Qwindow_configuration_p, config); | |
5058 | ||
5059 | data = (struct save_window_data *) XVECTOR (config); | |
5060 | saved_windows = XVECTOR (data->saved_windows); | |
5061 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5062 | } | |
5063 | ||
d5b2799e | 5064 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5065 | Sset_window_configuration, 1, 1, 0, |
5066 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5067 | CONFIGURATION must be a value previously returned | |
5068 | by `current-window-configuration' (which see). | |
5069 | If CONFIGURATION was made from a frame that is now deleted, | |
5070 | only frame-independent values can be restored. In this case, | |
5071 | the return value is nil. Otherwise the value is t. */) | |
5072 | (configuration) | |
2f83aebe | 5073 | Lisp_Object configuration; |
7ab12479 | 5074 | { |
7ab12479 JB |
5075 | register struct save_window_data *data; |
5076 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5077 | Lisp_Object new_current_buffer; |
fd482be5 | 5078 | Lisp_Object frame; |
44fa5b1e | 5079 | FRAME_PTR f; |
72695e47 | 5080 | int old_point = -1; |
7ab12479 | 5081 | |
017b2bad | 5082 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 5083 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 5084 | |
2f83aebe | 5085 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5086 | saved_windows = XVECTOR (data->saved_windows); |
5087 | ||
7ab12479 | 5088 | new_current_buffer = data->current_buffer; |
265a9e55 | 5089 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5090 | new_current_buffer = Qnil; |
72695e47 | 5091 | else |
73cadfc1 DK |
5092 | { |
5093 | if (XBUFFER (new_current_buffer) == current_buffer) | |
5094 | old_point = PT; | |
5095 | else | |
5096 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
5097 | } | |
7ab12479 | 5098 | |
fd482be5 JB |
5099 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5100 | f = XFRAME (frame); | |
177c0ea7 | 5101 | |
fd482be5 JB |
5102 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5103 | However, there is other stuff we should still try to do below. */ | |
5104 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5105 | { |
fd482be5 JB |
5106 | register struct window *w; |
5107 | register struct saved_window *p; | |
5500c422 GM |
5108 | struct window *root_window; |
5109 | struct window **leaf_windows; | |
5110 | int n_leaf_windows; | |
c4280705 | 5111 | int k, i, n; |
fd482be5 JB |
5112 | |
5113 | /* If the frame has been resized since this window configuration was | |
5114 | made, we change the frame to the size specified in the | |
5115 | configuration, restore the configuration, and then resize it | |
5116 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5117 | int previous_frame_lines = FRAME_LINES (f); |
5118 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5119 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5120 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5121 | |
d2b35234 RS |
5122 | /* The mouse highlighting code could get screwed up |
5123 | if it runs during this. */ | |
5124 | BLOCK_INPUT; | |
5125 | ||
949cf20f KS |
5126 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
5127 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
5128 | change_frame_size (f, XFASTINT (data->frame_lines), | |
5129 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 5130 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
5131 | if (XFASTINT (data->frame_menu_bar_lines) |
5132 | != previous_frame_menu_bar_lines) | |
f8ad443a | 5133 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 5134 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5135 | if (XFASTINT (data->frame_tool_bar_lines) |
5136 | != previous_frame_tool_bar_lines) | |
5137 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 5138 | #endif |
217f2871 | 5139 | #endif |
fd482be5 | 5140 | |
719eaeb1 GM |
5141 | /* "Swap out" point from the selected window |
5142 | into its buffer. We do this now, before | |
5143 | restoring the window contents, and prevent it from | |
5144 | being done later on when we select a new window. */ | |
596ae0cf RS |
5145 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5146 | { | |
5147 | w = XWINDOW (selected_window); | |
5148 | set_marker_both (w->pointm, | |
5149 | w->buffer, | |
5150 | BUF_PT (XBUFFER (w->buffer)), | |
5151 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5152 | } | |
5153 | ||
fd482be5 | 5154 | windows_or_buffers_changed++; |
29aeee73 | 5155 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5156 | |
5500c422 | 5157 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5158 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
5159 | really like to do is to free only those matrices not reused |
5160 | below. */ | |
5161 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
5162 | leaf_windows | |
5163 | = (struct window **) alloca (count_windows (root_window) | |
5164 | * sizeof (struct window *)); | |
5165 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5166 | ||
756b6edc RS |
5167 | /* Temporarily avoid any problems with windows that are smaller |
5168 | than they are supposed to be. */ | |
5169 | window_min_height = 1; | |
5170 | window_min_width = 1; | |
5171 | ||
fd482be5 JB |
5172 | /* Kludge Alert! |
5173 | Mark all windows now on frame as "deleted". | |
5174 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5175 | |
fd482be5 JB |
5176 | Save their current buffers in their height fields, since we may |
5177 | need it later, if a buffer saved in the configuration is now | |
5178 | dead. */ | |
5179 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
5180 | ||
5181 | for (k = 0; k < saved_windows->size; k++) | |
5182 | { | |
5183 | p = SAVED_WINDOW_N (saved_windows, k); | |
5184 | w = XWINDOW (p->window); | |
5185 | w->next = Qnil; | |
7ab12479 | 5186 | |
fd482be5 JB |
5187 | if (!NILP (p->parent)) |
5188 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5189 | XFASTINT (p->parent))->window; | |
5190 | else | |
5191 | w->parent = Qnil; | |
7ab12479 | 5192 | |
fd482be5 | 5193 | if (!NILP (p->prev)) |
7ab12479 | 5194 | { |
fd482be5 JB |
5195 | w->prev = SAVED_WINDOW_N (saved_windows, |
5196 | XFASTINT (p->prev))->window; | |
5197 | XWINDOW (w->prev)->next = p->window; | |
5198 | } | |
5199 | else | |
5200 | { | |
5201 | w->prev = Qnil; | |
5202 | if (!NILP (w->parent)) | |
5203 | { | |
949cf20f | 5204 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5205 | { |
5206 | XWINDOW (w->parent)->vchild = p->window; | |
5207 | XWINDOW (w->parent)->hchild = Qnil; | |
5208 | } | |
5209 | else | |
5210 | { | |
5211 | XWINDOW (w->parent)->hchild = p->window; | |
5212 | XWINDOW (w->parent)->vchild = Qnil; | |
5213 | } | |
5214 | } | |
5215 | } | |
5216 | ||
5217 | /* If we squirreled away the buffer in the window's height, | |
5218 | restore it now. */ | |
949cf20f KS |
5219 | if (BUFFERP (w->total_lines)) |
5220 | w->buffer = w->total_lines; | |
5221 | w->left_col = p->left_col; | |
5222 | w->top_line = p->top_line; | |
5223 | w->total_cols = p->total_cols; | |
5224 | w->total_lines = p->total_lines; | |
fd482be5 | 5225 | w->hscroll = p->hscroll; |
ea68264b | 5226 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5227 | w->display_table = p->display_table; |
949cf20f KS |
5228 | w->orig_top_line = p->orig_top_line; |
5229 | w->orig_total_lines = p->orig_total_lines; | |
5230 | w->left_margin_cols = p->left_margin_cols; | |
5231 | w->right_margin_cols = p->right_margin_cols; | |
5232 | w->left_fringe_width = p->left_fringe_width; | |
5233 | w->right_fringe_width = p->right_fringe_width; | |
5234 | w->fringes_outside_margins = p->fringes_outside_margins; | |
5235 | w->scroll_bar_width = p->scroll_bar_width; | |
5236 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
d834a2e9 | 5237 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5238 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5239 | |
5240 | /* Reinstall the saved buffer and pointers into it. */ | |
5241 | if (NILP (p->buffer)) | |
5242 | w->buffer = p->buffer; | |
5243 | else | |
5244 | { | |
5245 | if (!NILP (XBUFFER (p->buffer)->name)) | |
5246 | /* If saved buffer is alive, install it. */ | |
5247 | { | |
5248 | w->buffer = p->buffer; | |
5249 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
5250 | set_marker_restricted (w->start, p->start, w->buffer); |
5251 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 5252 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 5253 | p->mark, w->buffer); |
fd482be5 JB |
5254 | |
5255 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
5256 | restore the location of point in the buffer which was |
5257 | current when the window configuration was recorded. */ | |
6b54027b RS |
5258 | if (!EQ (p->buffer, new_current_buffer) |
5259 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
5260 | Fgoto_char (w->pointm); |
5261 | } | |
52a68e98 RS |
5262 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
5263 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 5264 | { |
fd482be5 JB |
5265 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
5266 | /* This will set the markers to beginning of visible | |
5267 | range. */ | |
5268 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5269 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
5270 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
5271 | } |
5272 | else | |
fd482be5 | 5273 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 5274 | are real. */ |
7ab12479 | 5275 | { |
fd482be5 JB |
5276 | /* Set window markers at start of visible range. */ |
5277 | if (XMARKER (w->start)->buffer == 0) | |
5278 | set_marker_restricted (w->start, make_number (0), | |
5279 | w->buffer); | |
5280 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
5281 | set_marker_restricted_both (w->pointm, w->buffer, |
5282 | BUF_PT (XBUFFER (w->buffer)), | |
5283 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 5284 | w->start_at_line_beg = Qt; |
7ab12479 JB |
5285 | } |
5286 | } | |
5287 | } | |
9ace597f | 5288 | |
fd482be5 | 5289 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
5290 | /* Prevent "swapping out point" in the old selected window |
5291 | using the buffer that has been restored into it. | |
72695e47 RS |
5292 | Use the point value from the beginning of this function |
5293 | since unshow_buffer (called from delete_all_subwindows) | |
5294 | could have altered it. */ | |
719eaeb1 | 5295 | selected_window = Qnil; |
243a5ce6 RS |
5296 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5297 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5298 | make_number (old_point), |
243a5ce6 | 5299 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5300 | |
14d87dc9 | 5301 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
5302 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
5303 | = selected_window; | |
7ab12479 | 5304 | |
db269683 | 5305 | if (NILP (data->focus_frame) |
017b2bad | 5306 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5307 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5308 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5309 | |
fd482be5 JB |
5310 | #if 0 /* I don't understand why this is needed, and it causes problems |
5311 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5312 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5313 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5314 | 0, 0); |
fd482be5 JB |
5315 | #endif |
5316 | ||
5317 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
5318 | if (previous_frame_lines != FRAME_LINES (f) |
5319 | || previous_frame_cols != FRAME_COLS (f)) | |
5320 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5321 | 0, 0, 0); |
e3678b64 | 5322 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5323 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5324 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5325 | make_number (0)); | |
4314246f | 5326 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5327 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5328 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5329 | make_number (0)); | |
4314246f | 5330 | #endif |
217f2871 | 5331 | #endif |
d2b35234 | 5332 | |
5500c422 | 5333 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5334 | for (i = n = 0; i < n_leaf_windows; ++i) |
5335 | { | |
5336 | if (NILP (leaf_windows[i]->buffer)) | |
5337 | { | |
5338 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 5339 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
5340 | && NILP (leaf_windows[i]->vchild)); |
5341 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5342 | } |
5343 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5344 | ++n; | |
5345 | } | |
177c0ea7 | 5346 | |
5500c422 GM |
5347 | adjust_glyphs (f); |
5348 | ||
d2b35234 | 5349 | UNBLOCK_INPUT; |
756b6edc | 5350 | |
478292ed RS |
5351 | /* Fselect_window will have made f the selected frame, so we |
5352 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5353 | selected window too, but that doesn't make the call to | |
5354 | Fselect_window above totally superfluous; it still sets f's | |
5355 | selected window. */ | |
5356 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5357 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5358 | |
5359 | if (! NILP (Vwindow_configuration_change_hook) | |
5360 | && ! NILP (Vrun_hooks)) | |
5361 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5362 | } | |
bdc727bf JB |
5363 | |
5364 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5365 | Fset_buffer (new_current_buffer); |
bdc727bf | 5366 | |
478292ed RS |
5367 | /* Restore the minimum heights recorded in the configuration. */ |
5368 | window_min_height = XINT (data->min_height); | |
5369 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5370 | |
478292ed | 5371 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5372 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5373 | |
3f8ab7bd | 5374 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5375 | } |
5376 | ||
44fa5b1e | 5377 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5378 | by setting their buffers to nil. */ |
5379 | ||
fd482be5 | 5380 | void |
7ab12479 JB |
5381 | delete_all_subwindows (w) |
5382 | register struct window *w; | |
5383 | { | |
265a9e55 | 5384 | if (!NILP (w->next)) |
7ab12479 | 5385 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5386 | if (!NILP (w->vchild)) |
7ab12479 | 5387 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5388 | if (!NILP (w->hchild)) |
7ab12479 | 5389 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 5390 | |
949cf20f | 5391 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 5392 | |
86e48436 RS |
5393 | if (!NILP (w->buffer)) |
5394 | unshow_buffer (w); | |
5395 | ||
605be8af JB |
5396 | /* We set all three of these fields to nil, to make sure that we can |
5397 | distinguish this dead window from any live window. Live leaf | |
5398 | windows will have buffer set, and combination windows will have | |
5399 | vchild or hchild set. */ | |
5400 | w->buffer = Qnil; | |
5401 | w->vchild = Qnil; | |
5402 | w->hchild = Qnil; | |
acf70840 GM |
5403 | |
5404 | Vwindow_list = Qnil; | |
7ab12479 JB |
5405 | } |
5406 | \f | |
5407 | static int | |
5408 | count_windows (window) | |
5409 | register struct window *window; | |
5410 | { | |
5411 | register int count = 1; | |
265a9e55 | 5412 | if (!NILP (window->next)) |
7ab12479 | 5413 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5414 | if (!NILP (window->vchild)) |
7ab12479 | 5415 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5416 | if (!NILP (window->hchild)) |
7ab12479 JB |
5417 | count += count_windows (XWINDOW (window->hchild)); |
5418 | return count; | |
5419 | } | |
5420 | ||
5500c422 | 5421 | |
177c0ea7 | 5422 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
5423 | Value is last index + 1. */ |
5424 | ||
5425 | static int | |
5426 | get_leaf_windows (w, flat, i) | |
5427 | struct window *w; | |
5428 | struct window **flat; | |
5429 | int i; | |
5430 | { | |
5431 | while (w) | |
5432 | { | |
5433 | if (!NILP (w->hchild)) | |
5434 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5435 | else if (!NILP (w->vchild)) | |
5436 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5437 | else |
5500c422 GM |
5438 | flat[i++] = w; |
5439 | ||
5440 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5441 | } | |
5442 | ||
5443 | return i; | |
5444 | } | |
5445 | ||
5446 | ||
5447 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5448 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5449 | can be returned. */ | |
5450 | ||
5451 | struct glyph * | |
5452 | get_phys_cursor_glyph (w) | |
5453 | struct window *w; | |
5454 | { | |
5455 | struct glyph_row *row; | |
5456 | struct glyph *glyph; | |
5457 | ||
5458 | if (w->phys_cursor.vpos >= 0 | |
5459 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5460 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5461 | row->enabled_p) | |
5462 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5463 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5464 | else | |
5465 | glyph = NULL; | |
5466 | ||
5467 | return glyph; | |
5468 | } | |
5469 | ||
5470 | ||
7ab12479 JB |
5471 | static int |
5472 | save_window_save (window, vector, i) | |
5473 | Lisp_Object window; | |
5474 | struct Lisp_Vector *vector; | |
5475 | int i; | |
5476 | { | |
5477 | register struct saved_window *p; | |
5478 | register struct window *w; | |
5479 | register Lisp_Object tem; | |
5480 | ||
265a9e55 | 5481 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5482 | { |
5483 | p = SAVED_WINDOW_N (vector, i); | |
5484 | w = XWINDOW (window); | |
5485 | ||
d834a2e9 | 5486 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
5487 | p->window = window; |
5488 | p->buffer = w->buffer; | |
949cf20f KS |
5489 | p->left_col = w->left_col; |
5490 | p->top_line = w->top_line; | |
5491 | p->total_cols = w->total_cols; | |
5492 | p->total_lines = w->total_lines; | |
7ab12479 | 5493 | p->hscroll = w->hscroll; |
ea68264b | 5494 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5495 | p->display_table = w->display_table; |
949cf20f KS |
5496 | p->orig_top_line = w->orig_top_line; |
5497 | p->orig_total_lines = w->orig_total_lines; | |
5498 | p->left_margin_cols = w->left_margin_cols; | |
5499 | p->right_margin_cols = w->right_margin_cols; | |
5500 | p->left_fringe_width = w->left_fringe_width; | |
5501 | p->right_fringe_width = w->right_fringe_width; | |
5502 | p->fringes_outside_margins = w->fringes_outside_margins; | |
5503 | p->scroll_bar_width = w->scroll_bar_width; | |
5504 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
265a9e55 | 5505 | if (!NILP (w->buffer)) |
7ab12479 JB |
5506 | { |
5507 | /* Save w's value of point in the window configuration. | |
5508 | If w is the selected window, then get the value of point | |
5509 | from the buffer; pointm is garbage in the selected window. */ | |
5510 | if (EQ (window, selected_window)) | |
5511 | { | |
5512 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5513 | set_marker_both (p->pointm, w->buffer, |
5514 | BUF_PT (XBUFFER (w->buffer)), | |
5515 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5516 | } |
5517 | else | |
eeb82665 | 5518 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5519 | |
eeb82665 | 5520 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5521 | p->start_at_line_beg = w->start_at_line_beg; |
5522 | ||
5523 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 5524 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5525 | } |
5526 | else | |
5527 | { | |
5528 | p->pointm = Qnil; | |
5529 | p->start = Qnil; | |
5530 | p->mark = Qnil; | |
5531 | p->start_at_line_beg = Qnil; | |
5532 | } | |
5533 | ||
265a9e55 | 5534 | if (NILP (w->parent)) |
7ab12479 JB |
5535 | p->parent = Qnil; |
5536 | else | |
5537 | p->parent = XWINDOW (w->parent)->temslot; | |
5538 | ||
265a9e55 | 5539 | if (NILP (w->prev)) |
7ab12479 JB |
5540 | p->prev = Qnil; |
5541 | else | |
5542 | p->prev = XWINDOW (w->prev)->temslot; | |
5543 | ||
265a9e55 | 5544 | if (!NILP (w->vchild)) |
7ab12479 | 5545 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5546 | if (!NILP (w->hchild)) |
7ab12479 JB |
5547 | i = save_window_save (w->hchild, vector, i); |
5548 | } | |
5549 | ||
5550 | return i; | |
5551 | } | |
5552 | ||
a0d76c27 | 5553 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5554 | Scurrent_window_configuration, 0, 1, 0, |
5555 | doc: /* Return an object representing the current window configuration of FRAME. | |
5556 | If FRAME is nil or omitted, use the selected frame. | |
5557 | This describes the number of windows, their sizes and current buffers, | |
5558 | and for each displayed buffer, where display starts, and the positions of | |
5559 | point and mark. An exception is made for point in the current buffer: | |
5560 | its value is -not- saved. | |
5561 | This also records the currently selected frame, and FRAME's focus | |
5562 | redirection (see `redirect-frame-focus'). */) | |
5563 | (frame) | |
44fa5b1e | 5564 | Lisp_Object frame; |
7ab12479 JB |
5565 | { |
5566 | register Lisp_Object tem; | |
5567 | register int n_windows; | |
5568 | register struct save_window_data *data; | |
da2792e0 | 5569 | register struct Lisp_Vector *vec; |
7ab12479 | 5570 | register int i; |
44fa5b1e | 5571 | FRAME_PTR f; |
43bad991 | 5572 | |
44fa5b1e | 5573 | if (NILP (frame)) |
1ae1a37d | 5574 | frame = selected_frame; |
b7826503 | 5575 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 5576 | f = XFRAME (frame); |
7ab12479 | 5577 | |
44fa5b1e | 5578 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 5579 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
5580 | data = (struct save_window_data *)vec; |
5581 | ||
949cf20f KS |
5582 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
5583 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 5584 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 5585 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 5586 | data->selected_frame = selected_frame; |
44fa5b1e | 5587 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5588 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 5589 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 5590 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 5591 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5592 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
5593 | XSETINT (data->min_height, window_min_height); |
5594 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
5595 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5596 | data->saved_windows = tem; | |
5597 | for (i = 0; i < n_windows; i++) | |
5598 | XVECTOR (tem)->contents[i] | |
5599 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 5600 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5601 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5602 | return (tem); |
5603 | } | |
5604 | ||
5605 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 PJ |
5606 | 0, UNEVALLED, 0, |
5607 | doc: /* Execute body, preserving window sizes and contents. | |
5608 | Restore which buffer appears in which window, where display starts, | |
5609 | and the value of point and mark for each window. | |
5610 | Also restore the choice of selected window. | |
5611 | Also restore which buffer is current. | |
6924dda6 MB |
5612 | Does not restore the value of point in current buffer. |
5613 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 5614 | (args) |
7ab12479 JB |
5615 | Lisp_Object args; |
5616 | { | |
5617 | register Lisp_Object val; | |
aed13378 | 5618 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
5619 | |
5620 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 5621 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
5622 | val = Fprogn (args); |
5623 | return unbind_to (count, val); | |
5624 | } | |
5500c422 GM |
5625 | |
5626 | \f | |
5627 | /*********************************************************************** | |
5628 | Marginal Areas | |
5629 | ***********************************************************************/ | |
5630 | ||
5631 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5632 | 2, 3, 0, |
fdb82f93 PJ |
5633 | doc: /* Set width of marginal areas of window WINDOW. |
5634 | If window is nil, set margins of the currently selected window. | |
5635 | First parameter LEFT-WIDTH specifies the number of character | |
5636 | cells to reserve for the left marginal area. Second parameter | |
5637 | RIGHT-WIDTH does the same for the right marginal area. | |
5638 | A nil width parameter means no margin. */) | |
5639 | (window, left, right) | |
5500c422 GM |
5640 | Lisp_Object window, left, right; |
5641 | { | |
5642 | struct window *w = decode_window (window); | |
5500c422 | 5643 | |
949cf20f KS |
5644 | /* TODO: It doesn't make sense to use FLOATs here, since |
5645 | the rest of the code assumes they are integers. | |
5646 | So don't allow floats! ++KFS */ | |
5647 | ||
5500c422 | 5648 | if (!NILP (left)) |
b7826503 | 5649 | CHECK_NUMBER_OR_FLOAT (left); |
5500c422 | 5650 | if (!NILP (right)) |
b7826503 | 5651 | CHECK_NUMBER_OR_FLOAT (right); |
5500c422 GM |
5652 | |
5653 | /* Check widths < 0 and translate a zero width to nil. | |
5654 | Margins that are too wide have to be checked elsewhere. */ | |
5655 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 5656 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
5657 | XSETFASTINT (left, 0); |
5658 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
5659 | left = Qnil; | |
177c0ea7 | 5660 | |
5500c422 | 5661 | if ((INTEGERP (right) && XINT (right) < 0) |
7539e11f | 5662 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
5663 | XSETFASTINT (right, 0); |
5664 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
5665 | right = Qnil; | |
5666 | ||
949cf20f KS |
5667 | if (!EQ (w->left_margin_cols, left) |
5668 | || !EQ (w->right_margin_cols, right)) | |
5669 | { | |
5670 | w->left_margin_cols = left; | |
5671 | w->right_margin_cols = right; | |
5672 | ||
5673 | adjust_window_margins (w); | |
5674 | ||
5675 | ++windows_or_buffers_changed; | |
5676 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5677 | } | |
5500c422 | 5678 | |
5500c422 GM |
5679 | return Qnil; |
5680 | } | |
5681 | ||
5682 | ||
5683 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5684 | 0, 1, 0, | |
fdb82f93 PJ |
5685 | doc: /* Get width of marginal areas of window WINDOW. |
5686 | If WINDOW is omitted or nil, use the currently selected window. | |
5687 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
5688 | If a marginal area does not exist, its width will be returned | |
5689 | as nil. */) | |
5690 | (window) | |
5500c422 GM |
5691 | Lisp_Object window; |
5692 | { | |
5693 | struct window *w = decode_window (window); | |
949cf20f KS |
5694 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
5695 | } | |
5696 | ||
5697 | ||
5698 | \f | |
5699 | /*********************************************************************** | |
5700 | Fringes | |
5701 | ***********************************************************************/ | |
5702 | ||
5703 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
5704 | 2, 4, 0, | |
5705 | doc: /* Set width of fringes of window WINDOW. | |
5706 | ||
5707 | If window is nil, set fringes of the currently selected window. | |
5708 | Second parameter LEFT-WIDTH specifies the number of pixels to reserve | |
5709 | for the left fringe. Third parameter RIGHT-WIDTH does the same for | |
5710 | the right fringe. Fourth parameter OUTSIDE-MARGINS non-nil specifies | |
5711 | that fringes are drawn outside of the display margins; by default, fringes | |
5712 | are drawn between display marginal areas and the text area. | |
5713 | A nil width parameter means to use the frame's corresponding fringe width. */) | |
5714 | (window, left, right, outside_margins) | |
5715 | Lisp_Object window, left, right, outside_margins; | |
5716 | { | |
5717 | struct window *w = decode_window (window); | |
5718 | ||
5719 | if (!NILP (left)) | |
5720 | CHECK_NUMBER (left); | |
5721 | if (!NILP (right)) | |
5722 | CHECK_NUMBER (right); | |
5723 | ||
5724 | if (!EQ (w->left_fringe_width, left) | |
5725 | || !EQ (w->right_fringe_width, right) | |
5726 | || !EQ (w->fringes_outside_margins, outside_margins)) | |
5727 | { | |
5728 | w->left_fringe_width = left; | |
5729 | w->right_fringe_width = right; | |
5730 | w->fringes_outside_margins = outside_margins; | |
5731 | ||
5732 | adjust_window_margins (w); | |
5733 | ||
5734 | clear_glyph_matrix (w->current_matrix); | |
5735 | w->window_end_valid = Qnil; | |
5736 | ||
5737 | ++windows_or_buffers_changed; | |
5738 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5739 | } | |
5740 | ||
5741 | return Qnil; | |
5742 | } | |
5743 | ||
5744 | ||
5745 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
5746 | 0, 1, 0, | |
5747 | doc: /* Get width of fringes of window WINDOW. | |
5748 | If WINDOW is omitted or nil, use the currently selected window. | |
5749 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). | |
5750 | If a window specific fringe width is not set, its width will be returned | |
5751 | as nil. */) | |
5752 | (window) | |
5753 | Lisp_Object window; | |
5754 | { | |
5755 | struct window *w = decode_window (window); | |
5756 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), | |
5757 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
5758 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? | |
5759 | Qt : Qnil), Qnil))); | |
5760 | } | |
5761 | ||
5762 | ||
5763 | \f | |
5764 | /*********************************************************************** | |
5765 | Scroll bars | |
5766 | ***********************************************************************/ | |
5767 | ||
5768 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
5769 | 2, 4, 0, | |
5770 | doc: /* Set width and type of scroll bars of window WINDOW. | |
5771 | If window is nil, set scroll bars of the currently selected window. | |
5772 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
5773 | this is automatically adjusted to a multiple of the frame column width. | |
5774 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
5775 | bar: left, right, or nil. | |
5776 | A width of nil and type of t means to use the frame's corresponding value. */) | |
5777 | (window, width, vertical_type, horisontal_type) | |
5778 | Lisp_Object window, width, vertical_type, horisontal_type; | |
5779 | { | |
5780 | struct window *w = decode_window (window); | |
5781 | ||
5782 | if (!NILP (width)) | |
5783 | CHECK_NUMBER (width); | |
5784 | ||
5785 | if (XINT (width) == 0) | |
5786 | vertical_type = Qnil; | |
5787 | ||
5788 | if (!EQ (w->scroll_bar_width, width) | |
5789 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
5790 | { | |
5791 | w->scroll_bar_width = width; | |
5792 | w->vertical_scroll_bar_type = vertical_type; | |
5793 | ||
5794 | adjust_window_margins (w); | |
5795 | ||
5796 | clear_glyph_matrix (w->current_matrix); | |
5797 | w->window_end_valid = Qnil; | |
5798 | ||
5799 | ++windows_or_buffers_changed; | |
5800 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5801 | } | |
5802 | ||
5803 | return Qnil; | |
5804 | } | |
5805 | ||
5806 | ||
5807 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
5808 | 0, 1, 0, | |
5809 | doc: /* Get width and type of scroll bars of window WINDOW. | |
5810 | If WINDOW is omitted or nil, use the currently selected window. | |
5811 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORISONTAL-TYPE). */) | |
5812 | (window) | |
5813 | Lisp_Object window; | |
5814 | { | |
5815 | struct window *w = decode_window (window); | |
5816 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
5817 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
5818 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
5819 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
5820 | Fcons (w->vertical_scroll_bar_type, | |
5821 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
5822 | } |
5823 | ||
5824 | ||
7ab12479 | 5825 | \f |
5500c422 GM |
5826 | /*********************************************************************** |
5827 | Smooth scrolling | |
5828 | ***********************************************************************/ | |
5829 | ||
5830 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
fdb82f93 PJ |
5831 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
5832 | Use the selected window if WINDOW is nil or omitted. | |
5833 | Value is a multiple of the canonical character height of WINDOW. */) | |
5834 | (window) | |
5500c422 GM |
5835 | Lisp_Object window; |
5836 | { | |
47004952 | 5837 | Lisp_Object result; |
5500c422 GM |
5838 | struct frame *f; |
5839 | struct window *w; | |
177c0ea7 | 5840 | |
5500c422 GM |
5841 | if (NILP (window)) |
5842 | window = selected_window; | |
47004952 | 5843 | else |
b7826503 | 5844 | CHECK_WINDOW (window); |
5500c422 GM |
5845 | w = XWINDOW (window); |
5846 | f = XFRAME (w->frame); | |
177c0ea7 | 5847 | |
5500c422 | 5848 | if (FRAME_WINDOW_P (f)) |
949cf20f | 5849 | result = FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5850 | else |
47004952 GM |
5851 | result = make_number (0); |
5852 | return result; | |
5500c422 GM |
5853 | } |
5854 | ||
5855 | ||
5856 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 | 5857 | 2, 2, 0, |
fdb82f93 | 5858 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
b0f906c8 EZ |
5859 | WINDOW nil means use the selected window. VSCROLL is a non-negative |
5860 | multiple of the canonical character height of WINDOW. */) | |
fdb82f93 | 5861 | (window, vscroll) |
47004952 | 5862 | Lisp_Object window, vscroll; |
5500c422 GM |
5863 | { |
5864 | struct window *w; | |
5865 | struct frame *f; | |
177c0ea7 | 5866 | |
5500c422 GM |
5867 | if (NILP (window)) |
5868 | window = selected_window; | |
47004952 | 5869 | else |
b7826503 PJ |
5870 | CHECK_WINDOW (window); |
5871 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 5872 | |
5500c422 GM |
5873 | w = XWINDOW (window); |
5874 | f = XFRAME (w->frame); | |
5875 | ||
5876 | if (FRAME_WINDOW_P (f)) | |
5877 | { | |
5878 | int old_dy = w->vscroll; | |
177c0ea7 | 5879 | |
949cf20f | 5880 | w->vscroll = - FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll); |
47004952 | 5881 | w->vscroll = min (w->vscroll, 0); |
5500c422 GM |
5882 | |
5883 | /* Adjust glyph matrix of the frame if the virtual display | |
5884 | area becomes larger than before. */ | |
5885 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5886 | adjust_glyphs (f); | |
177c0ea7 | 5887 | |
5500c422 | 5888 | /* Prevent redisplay shortcuts. */ |
b1599b4c | 5889 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 | 5890 | } |
177c0ea7 | 5891 | |
47004952 | 5892 | return Fwindow_vscroll (window); |
5500c422 | 5893 | } |
177c0ea7 | 5894 | |
7bbb5782 GM |
5895 | \f |
5896 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5897 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 5898 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
5899 | |
5900 | void | |
f95464e4 | 5901 | foreach_window (f, fn, user_data) |
7bbb5782 | 5902 | struct frame *f; |
f95464e4 GM |
5903 | int (* fn) P_ ((struct window *, void *)); |
5904 | void *user_data; | |
7bbb5782 | 5905 | { |
f95464e4 | 5906 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
5907 | } |
5908 | ||
5909 | ||
5910 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5911 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 5912 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 5913 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 5914 | |
67492200 | 5915 | static int |
f95464e4 | 5916 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 5917 | struct window *w; |
f95464e4 GM |
5918 | int (* fn) P_ ((struct window *, void *)); |
5919 | void *user_data; | |
7bbb5782 | 5920 | { |
67492200 | 5921 | int cont; |
177c0ea7 | 5922 | |
67492200 | 5923 | for (cont = 1; w && cont;) |
7bbb5782 GM |
5924 | { |
5925 | if (!NILP (w->hchild)) | |
f95464e4 | 5926 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 5927 | else if (!NILP (w->vchild)) |
f95464e4 | 5928 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 5929 | else |
0f532a9a | 5930 | cont = fn (w, user_data); |
177c0ea7 | 5931 | |
7bbb5782 GM |
5932 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5933 | } | |
67492200 GM |
5934 | |
5935 | return cont; | |
7bbb5782 GM |
5936 | } |
5937 | ||
5938 | ||
6d194a45 | 5939 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 5940 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
5941 | the window start. */ |
5942 | ||
67492200 | 5943 | static int |
7bbb5782 GM |
5944 | freeze_window_start (w, freeze_p) |
5945 | struct window *w; | |
f95464e4 | 5946 | void *freeze_p; |
7bbb5782 GM |
5947 | { |
5948 | if (w == XWINDOW (selected_window) | |
5949 | || MINI_WINDOW_P (w) | |
5950 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5951 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 5952 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 5953 | freeze_p = NULL; |
177c0ea7 | 5954 | |
f95464e4 | 5955 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 5956 | return 1; |
7bbb5782 GM |
5957 | } |
5958 | ||
5959 | ||
5960 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5961 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5962 | means freeze the window start. */ | |
5963 | ||
5964 | void | |
5965 | freeze_window_starts (f, freeze_p) | |
5966 | struct frame *f; | |
5967 | int freeze_p; | |
5968 | { | |
cbccabec | 5969 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 5970 | } |
5500c422 GM |
5971 | |
5972 | \f | |
5973 | /*********************************************************************** | |
5974 | Initialization | |
5975 | ***********************************************************************/ | |
5976 | ||
cbff28e8 RS |
5977 | /* Return 1 if window configurations C1 and C2 |
5978 | describe the same state of affairs. This is used by Fequal. */ | |
5979 | ||
5980 | int | |
2f8274be | 5981 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5982 | Lisp_Object c1, c2; |
2f8274be | 5983 | int ignore_positions; |
cbff28e8 RS |
5984 | { |
5985 | register struct save_window_data *d1, *d2; | |
5986 | struct Lisp_Vector *sw1, *sw2; | |
5987 | int i; | |
5988 | ||
4d3edcb4 GM |
5989 | if (!WINDOW_CONFIGURATIONP (c1)) |
5990 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5991 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5992 | wrong_type_argument (Qwindow_configuration_p, c2); | |
177c0ea7 | 5993 | |
cbff28e8 RS |
5994 | d1 = (struct save_window_data *) XVECTOR (c1); |
5995 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5996 | sw1 = XVECTOR (d1->saved_windows); | |
5997 | sw2 = XVECTOR (d2->saved_windows); | |
5998 | ||
949cf20f | 5999 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 6000 | return 0; |
949cf20f | 6001 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
6002 | return 0; |
6003 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
6004 | return 0; | |
6005 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6006 | return 0; | |
6007 | /* Don't compare the current_window field directly. | |
6008 | Instead see w1_is_current and w2_is_current, below. */ | |
6009 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6010 | return 0; | |
2f8274be | 6011 | if (! ignore_positions) |
3f49fddc KS |
6012 | { |
6013 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6014 | return 0; | |
6015 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6016 | return 0; | |
6017 | } | |
cbff28e8 RS |
6018 | /* Don't compare the root_window field. |
6019 | We don't require the two configurations | |
6020 | to use the same window object, | |
6021 | and the two root windows must be equivalent | |
6022 | if everything else compares equal. */ | |
6023 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6024 | return 0; | |
6025 | if (! EQ (d1->min_width, d2->min_width)) | |
6026 | return 0; | |
6027 | if (! EQ (d1->min_height, d2->min_height)) | |
6028 | return 0; | |
6029 | ||
6030 | /* Verify that the two confis have the same number of windows. */ | |
6031 | if (sw1->size != sw2->size) | |
6032 | return 0; | |
6033 | ||
6034 | for (i = 0; i < sw1->size; i++) | |
6035 | { | |
6036 | struct saved_window *p1, *p2; | |
6037 | int w1_is_current, w2_is_current; | |
6038 | ||
6039 | p1 = SAVED_WINDOW_N (sw1, i); | |
6040 | p2 = SAVED_WINDOW_N (sw2, i); | |
6041 | ||
6042 | /* Verify that the current windows in the two | |
6043 | configurations correspond to each other. */ | |
6044 | w1_is_current = EQ (d1->current_window, p1->window); | |
6045 | w2_is_current = EQ (d2->current_window, p2->window); | |
6046 | ||
6047 | if (w1_is_current != w2_is_current) | |
6048 | return 0; | |
6049 | ||
6050 | /* Verify that the corresponding windows do match. */ | |
6051 | if (! EQ (p1->buffer, p2->buffer)) | |
6052 | return 0; | |
949cf20f | 6053 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6054 | return 0; |
949cf20f | 6055 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6056 | return 0; |
949cf20f | 6057 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6058 | return 0; |
949cf20f | 6059 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6060 | return 0; |
cbff28e8 RS |
6061 | if (! EQ (p1->display_table, p2->display_table)) |
6062 | return 0; | |
6063 | if (! EQ (p1->parent, p2->parent)) | |
6064 | return 0; | |
6065 | if (! EQ (p1->prev, p2->prev)) | |
6066 | return 0; | |
2f8274be RS |
6067 | if (! ignore_positions) |
6068 | { | |
6069 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6070 | return 0; | |
ea68264b GM |
6071 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6072 | return 0; | |
2f8274be RS |
6073 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6074 | return 0; | |
6075 | if (NILP (Fequal (p1->start, p2->start))) | |
6076 | return 0; | |
6077 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
6078 | return 0; | |
6079 | if (NILP (Fequal (p1->mark, p2->mark))) | |
6080 | return 0; | |
6081 | } | |
949cf20f KS |
6082 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
6083 | return 0; | |
6084 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
6085 | return 0; | |
6086 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
6087 | return 0; | |
6088 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
6089 | return 0; | |
6090 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
6091 | return 0; | |
6092 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
6093 | return 0; | |
6094 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
6095 | return 0; | |
cbff28e8 RS |
6096 | } |
6097 | ||
6098 | return 1; | |
6099 | } | |
2f8274be RS |
6100 | |
6101 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6102 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6103 | doc: /* Compare two window configurations as regards the structure of windows. |
6104 | This function ignores details such as the values of point and mark | |
6105 | and scrolling positions. */) | |
6106 | (x, y) | |
2f8274be RS |
6107 | Lisp_Object x, y; |
6108 | { | |
6109 | if (compare_window_configurations (x, y, 1)) | |
6110 | return Qt; | |
6111 | return Qnil; | |
6112 | } | |
cbff28e8 | 6113 | \f |
dfcf069d | 6114 | void |
7ab12479 JB |
6115 | init_window_once () |
6116 | { | |
1ae1a37d GM |
6117 | struct frame *f = make_terminal_frame (); |
6118 | XSETFRAME (selected_frame, f); | |
6119 | Vterminal_frame = selected_frame; | |
6120 | minibuf_window = f->minibuffer_window; | |
6121 | selected_window = f->selected_window; | |
6122 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6123 | |
6124 | window_initialized = 1; | |
7ab12479 JB |
6125 | } |
6126 | ||
67492200 GM |
6127 | void |
6128 | init_window () | |
6129 | { | |
6130 | Vwindow_list = Qnil; | |
6131 | } | |
6132 | ||
dfcf069d | 6133 | void |
7ab12479 JB |
6134 | syms_of_window () |
6135 | { | |
8a37516b GM |
6136 | Qwindow_size_fixed = intern ("window-size-fixed"); |
6137 | staticpro (&Qwindow_size_fixed); | |
177c0ea7 | 6138 | |
543f5fb1 RS |
6139 | staticpro (&Qwindow_configuration_change_hook); |
6140 | Qwindow_configuration_change_hook | |
6141 | = intern ("window-configuration-change-hook"); | |
6142 | ||
7ab12479 JB |
6143 | Qwindowp = intern ("windowp"); |
6144 | staticpro (&Qwindowp); | |
6145 | ||
3f8ab7bd RS |
6146 | Qwindow_configuration_p = intern ("window-configuration-p"); |
6147 | staticpro (&Qwindow_configuration_p); | |
6148 | ||
806b4d9b JB |
6149 | Qwindow_live_p = intern ("window-live-p"); |
6150 | staticpro (&Qwindow_live_p); | |
605be8af | 6151 | |
2cccc823 | 6152 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
6153 | staticpro (&Qtemp_buffer_show_hook); |
6154 | ||
67492200 | 6155 | staticpro (&Vwindow_list); |
8bfb170b KS |
6156 | |
6157 | minibuf_selected_window = Qnil; | |
3dbab091 | 6158 | staticpro (&minibuf_selected_window); |
67492200 | 6159 | |
7ab12479 | 6160 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
6161 | doc: /* Non-nil means call as function to display a help buffer. |
6162 | The function is called with one argument, the buffer to be displayed. | |
6163 | Used by `with-output-to-temp-buffer'. | |
6164 | If this function is used, then it must do the entire job of showing | |
6165 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
6166 | Vtemp_buffer_show_function = Qnil; |
6167 | ||
6168 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
6169 | doc: /* If non-nil, function to call to handle `display-buffer'. |
6170 | It will receive two args, the buffer and a flag which if non-nil means | |
6171 | that the currently selected window is not acceptable. | |
6172 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' | |
6173 | work using this function. */); | |
7ab12479 JB |
6174 | Vdisplay_buffer_function = Qnil; |
6175 | ||
6529ed87 | 6176 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
6177 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
6178 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
6179 | Veven_window_heights = Qt; |
6180 | ||
7ab12479 | 6181 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 6182 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6183 | Vminibuf_scroll_window = Qnil; |
6184 | ||
cc91894c | 6185 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 6186 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6187 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6188 | is displayed in the `mode-line' face. */); | |
6189 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6190 | |
7ab12479 | 6191 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 6192 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6193 | Vother_window_scroll_buffer = Qnil; |
6194 | ||
44fa5b1e | 6195 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 6196 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 6197 | pop_up_frames = 0; |
7ab12479 | 6198 | |
9c3da604 | 6199 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
6200 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
6201 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
6202 | display_buffer_reuse_frames = 0; |
6203 | ||
44fa5b1e | 6204 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
6205 | doc: /* Function to call to handle automatic new frame creation. |
6206 | It is called with no arguments and should return a newly created frame. | |
6207 | ||
6208 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
6209 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 6210 | Vpop_up_frame_function = Qnil; |
7ab12479 | 6211 | |
a90712c2 | 6212 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 PJ |
6213 | doc: /* *List of buffer names that should have their own special frames. |
6214 | Displaying a buffer whose name is in this list makes a special frame for it | |
6215 | using `special-display-function'. See also `special-display-regexps'. | |
6216 | ||
6217 | An element of the list can be a list instead of just a string. | |
6218 | There are two ways to use a list as an element: | |
6219 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
6220 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
6221 | In the latter case, FUNCTION is called with BUFFER as the first argument, | |
6222 | followed by OTHER-ARGS--it can display BUFFER in any way it likes. | |
6223 | All this is done by the function found in `special-display-function'. | |
6224 | ||
6225 | If this variable appears \"not to work\", because you add a name to it | |
6226 | but that buffer still appears in the selected window, look at the | |
6227 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6228 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6229 | Vspecial_display_buffer_names = Qnil; |
6230 | ||
6231 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 PJ |
6232 | doc: /* *List of regexps saying which buffers should have their own special frames. |
6233 | If a buffer name matches one of these regexps, it gets its own frame. | |
6234 | Displaying a buffer whose name is in this list makes a special frame for it | |
6235 | using `special-display-function'. | |
6236 | ||
6237 | An element of the list can be a list instead of just a string. | |
6238 | There are two ways to use a list as an element: | |
6239 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
6240 | In the first case, FRAME-PARAMETERS are used to create the frame. | |
6241 | In the latter case, FUNCTION is called with the buffer as first argument, | |
6242 | followed by OTHER-ARGS--it can display the buffer in any way it likes. | |
6243 | All this is done by the function found in `special-display-function'. | |
6244 | ||
6245 | If this variable appears \"not to work\", because you add a regexp to it | |
6246 | but the matching buffers still appear in the selected window, look at the | |
6247 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6248 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6249 | Vspecial_display_regexps = Qnil; |
6250 | ||
6251 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
6252 | doc: /* Function to call to make a new frame for a special buffer. |
6253 | It is called with two arguments, the buffer and optional buffer specific | |
6254 | data, and should return a window displaying that buffer. | |
a5731348 SM |
6255 | The default value normally makes a separate frame for the buffer, |
6256 | using `special-display-frame-alist' to specify the frame parameters. | |
6257 | But if the buffer specific data includes (same-buffer . t) then the | |
6258 | buffer is displayed in the current selected window. | |
6259 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
6260 | a new window in the currently selected frame. | |
6261 | ||
6262 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 6263 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
6264 | Vspecial_display_function = Qnil; |
6265 | ||
855d8627 | 6266 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
6267 | doc: /* *List of buffer names that should appear in the selected window. |
6268 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
6269 | switches to it in the selected window, rather than making it appear | |
6270 | in some other window. | |
6271 | ||
6272 | An element of the list can be a cons cell instead of just a string. | |
6273 | Then the car must be a string, which specifies the buffer name. | |
6274 | This is for compatibility with `special-display-buffer-names'; | |
6275 | the cdr of the cons cell is ignored. | |
6276 | ||
6277 | See also `same-window-regexps'. */); | |
855d8627 RS |
6278 | Vsame_window_buffer_names = Qnil; |
6279 | ||
6280 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
6281 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
6282 | If a buffer name matches one of these regexps, then displaying it | |
6283 | using `display-buffer' or `pop-to-buffer' switches to it | |
6284 | in the selected window, rather than making it appear in some other window. | |
6285 | ||
6286 | An element of the list can be a cons cell instead of just a string. | |
6287 | Then the car must be a string, which specifies the buffer name. | |
6288 | This is for compatibility with `special-display-buffer-names'; | |
6289 | the cdr of the cons cell is ignored. | |
6290 | ||
6291 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
6292 | Vsame_window_regexps = Qnil; |
6293 | ||
7ab12479 | 6294 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 6295 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
6296 | pop_up_windows = 1; |
6297 | ||
6298 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 6299 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6300 | next_screen_context_lines = 2; |
6301 | ||
6302 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
fdb82f93 PJ |
6303 | doc: /* *display-buffer would prefer to split the largest window if this large. |
6304 | If there is only one window, it is split regardless of this value. */); | |
7ab12479 JB |
6305 | split_height_threshold = 500; |
6306 | ||
6307 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 6308 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
6309 | window_min_height = 4; |
6310 | ||
6311 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 6312 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
6313 | window_min_width = 10; |
6314 | ||
5500c422 GM |
6315 | DEFVAR_LISP ("scroll-preserve-screen-position", |
6316 | &Vscroll_preserve_screen_position, | |
fdb82f93 | 6317 | doc: /* *Non-nil means scroll commands move point to keep its screen line unchanged. */); |
5500c422 | 6318 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6319 | |
543f5fb1 RS |
6320 | DEFVAR_LISP ("window-configuration-change-hook", |
6321 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
6322 | doc: /* Functions to call when window configuration changes. |
6323 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
6324 | Vwindow_configuration_change_hook = Qnil; |
6325 | ||
b0b7ed0e | 6326 | DEFVAR_BOOL ("window-size-fixed", &window_size_fixed, |
fdb82f93 PJ |
6327 | doc: /* Non-nil in a buffer means windows displaying the buffer are fixed-size. |
6328 | Emacs won't change the size of any window displaying that buffer, | |
6329 | unless you explicitly change the size, or Emacs has no other choice. | |
6330 | This variable automatically becomes buffer-local when set. */); | |
b0b7ed0e GM |
6331 | Fmake_variable_buffer_local (Qwindow_size_fixed); |
6332 | window_size_fixed = 0; | |
6333 | ||
7ab12479 JB |
6334 | defsubr (&Sselected_window); |
6335 | defsubr (&Sminibuffer_window); | |
6336 | defsubr (&Swindow_minibuffer_p); | |
6337 | defsubr (&Swindowp); | |
806b4d9b | 6338 | defsubr (&Swindow_live_p); |
7ab12479 JB |
6339 | defsubr (&Spos_visible_in_window_p); |
6340 | defsubr (&Swindow_buffer); | |
6341 | defsubr (&Swindow_height); | |
6342 | defsubr (&Swindow_width); | |
6343 | defsubr (&Swindow_hscroll); | |
6344 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6345 | defsubr (&Swindow_redisplay_end_trigger); |
6346 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6347 | defsubr (&Swindow_edges); |
d5783c40 JB |
6348 | defsubr (&Scoordinates_in_window_p); |
6349 | defsubr (&Swindow_at); | |
7ab12479 JB |
6350 | defsubr (&Swindow_point); |
6351 | defsubr (&Swindow_start); | |
6352 | defsubr (&Swindow_end); | |
6353 | defsubr (&Sset_window_point); | |
6354 | defsubr (&Sset_window_start); | |
6355 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6356 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6357 | defsubr (&Swindow_display_table); |
6358 | defsubr (&Sset_window_display_table); | |
6359 | defsubr (&Snext_window); | |
6360 | defsubr (&Sprevious_window); | |
6361 | defsubr (&Sother_window); | |
6362 | defsubr (&Sget_lru_window); | |
6363 | defsubr (&Sget_largest_window); | |
6364 | defsubr (&Sget_buffer_window); | |
6365 | defsubr (&Sdelete_other_windows); | |
6366 | defsubr (&Sdelete_windows_on); | |
6367 | defsubr (&Sreplace_buffer_in_windows); | |
6368 | defsubr (&Sdelete_window); | |
6369 | defsubr (&Sset_window_buffer); | |
6370 | defsubr (&Sselect_window); | |
4628f7a4 EN |
6371 | defsubr (&Sspecial_display_p); |
6372 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
6373 | defsubr (&Sdisplay_buffer); |
6374 | defsubr (&Ssplit_window); | |
6375 | defsubr (&Senlarge_window); | |
6376 | defsubr (&Sshrink_window); | |
6377 | defsubr (&Sscroll_up); | |
6378 | defsubr (&Sscroll_down); | |
6379 | defsubr (&Sscroll_left); | |
6380 | defsubr (&Sscroll_right); | |
ccd0664b | 6381 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6382 | defsubr (&Sscroll_other_window); |
fa832261 | 6383 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6384 | defsubr (&Srecenter); |
81fe0836 | 6385 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6386 | defsubr (&Smove_to_window_line); |
6387 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6388 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6389 | defsubr (&Sset_window_configuration); |
6390 | defsubr (&Scurrent_window_configuration); | |
6391 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
6392 | defsubr (&Sset_window_margins); |
6393 | defsubr (&Swindow_margins); | |
949cf20f KS |
6394 | defsubr (&Sset_window_fringes); |
6395 | defsubr (&Swindow_fringes); | |
6396 | defsubr (&Sset_window_scroll_bars); | |
6397 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6398 | defsubr (&Swindow_vscroll); |
6399 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6400 | defsubr (&Scompare_window_configurations); |
67492200 | 6401 | defsubr (&Swindow_list); |
7ab12479 JB |
6402 | } |
6403 | ||
dfcf069d | 6404 | void |
7ab12479 JB |
6405 | keys_of_window () |
6406 | { | |
6407 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
6408 | initial_define_key (control_x_map, '2', "split-window"); | |
6409 | initial_define_key (control_x_map, '0', "delete-window"); | |
6410 | initial_define_key (control_x_map, 'o', "other-window"); | |
6411 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
6412 | initial_define_key (control_x_map, '<', "scroll-left"); | |
6413 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6414 | ||
6415 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
6416 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
6417 | initial_define_key (meta_map, 'v', "scroll-down"); | |
6418 | ||
6419 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
6420 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
6421 | } |