Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
203eb0aa | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
0b5538bd | 4 | 2001, 2002, 2003, 2004, 2005 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 | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, 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 | |
7ab12479 JB |
82 | /* This is the window in which the terminal's cursor should |
83 | be left when nothing is being done with it. This must | |
84 | always be a leaf window, and its buffer is selected by | |
85 | the top level editing loop at the end of each command. | |
86 | ||
87 | This value is always the same as | |
44fa5b1e | 88 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
89 | |
90 | Lisp_Object selected_window; | |
91 | ||
67492200 GM |
92 | /* A list of all windows for use by next_window and Fwindow_list. |
93 | Functions creating or deleting windows should invalidate this cache | |
94 | by setting it to nil. */ | |
95 | ||
96 | Lisp_Object Vwindow_list; | |
97 | ||
5500c422 GM |
98 | /* The mini-buffer window of the selected frame. |
99 | Note that you cannot test for mini-bufferness of an arbitrary window | |
100 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 101 | the selected window. */ |
5500c422 | 102 | |
7ab12479 JB |
103 | Lisp_Object minibuf_window; |
104 | ||
3f49fddc KS |
105 | /* Non-nil means it is the window whose mode line should be |
106 | shown as the selected window when the minibuffer is selected. */ | |
107 | ||
3dbab091 | 108 | Lisp_Object minibuf_selected_window; |
3f49fddc | 109 | |
7ab12479 | 110 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
111 | when the mini-buffer is selected. */ |
112 | ||
7ab12479 JB |
113 | Lisp_Object Vminibuf_scroll_window; |
114 | ||
115 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 116 | |
7ab12479 JB |
117 | Lisp_Object Vother_window_scroll_buffer; |
118 | ||
7ab12479 | 119 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 120 | |
7ab12479 JB |
121 | Lisp_Object Vtemp_buffer_show_function; |
122 | ||
e56263e5 KS |
123 | /* Non-zero means line and page scrolling on tall lines (with images) |
124 | does partial scrolling by modifying window-vscroll. */ | |
125 | ||
126 | int auto_window_vscroll_p; | |
127 | ||
cc91894c KS |
128 | /* Non-zero means to use mode-line-inactive face in all windows but the |
129 | selected-window and the minibuffer-scroll-window when the | |
130 | minibuffer is active. */ | |
131 | int mode_line_in_non_selected_windows; | |
26124d5e | 132 | |
7ab12479 | 133 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 134 | |
31ade731 SM |
135 | EMACS_INT window_min_height; |
136 | EMACS_INT window_min_width; | |
7ab12479 JB |
137 | |
138 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 139 | |
7ab12479 JB |
140 | int pop_up_windows; |
141 | ||
44fa5b1e | 142 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 143 | |
44fa5b1e | 144 | int pop_up_frames; |
7ab12479 | 145 | |
9c3da604 GM |
146 | /* Nonzero means reuse existing frames for displaying buffers. */ |
147 | ||
148 | int display_buffer_reuse_frames; | |
149 | ||
7ab12479 | 150 | /* Non-nil means use this function instead of default */ |
5500c422 | 151 | |
44fa5b1e | 152 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
153 | |
154 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 155 | |
7ab12479 JB |
156 | Lisp_Object Vdisplay_buffer_function; |
157 | ||
6529ed87 GM |
158 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
159 | ||
160 | Lisp_Object Veven_window_heights; | |
161 | ||
a90712c2 | 162 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 163 | |
a90712c2 RS |
164 | Lisp_Object Vspecial_display_buffer_names; |
165 | ||
166 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 167 | |
a90712c2 RS |
168 | Lisp_Object Vspecial_display_regexps; |
169 | ||
170 | /* Function to pop up a special frame. */ | |
5500c422 | 171 | |
a90712c2 RS |
172 | Lisp_Object Vspecial_display_function; |
173 | ||
855d8627 | 174 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 175 | |
855d8627 RS |
176 | Lisp_Object Vsame_window_buffer_names; |
177 | ||
178 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 179 | |
855d8627 RS |
180 | Lisp_Object Vsame_window_regexps; |
181 | ||
a58ec57d | 182 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 183 | |
a58ec57d RS |
184 | Lisp_Object Qtemp_buffer_show_hook; |
185 | ||
37962e60 | 186 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 187 | if that window is more than this high. */ |
5500c422 | 188 | |
31ade731 | 189 | EMACS_INT split_height_threshold; |
7ab12479 JB |
190 | |
191 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 192 | |
31ade731 | 193 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
194 | |
195 | /* Incremented for each window created. */ | |
5500c422 | 196 | |
7ab12479 JB |
197 | static int sequence_number; |
198 | ||
5b03d3c0 | 199 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 200 | |
5b03d3c0 RS |
201 | static int window_initialized; |
202 | ||
543f5fb1 | 203 | /* Hook to run when window config changes. */ |
5500c422 | 204 | |
543f5fb1 RS |
205 | Lisp_Object Qwindow_configuration_change_hook; |
206 | Lisp_Object Vwindow_configuration_change_hook; | |
207 | ||
d0c38d63 | 208 | /* Non-nil means scroll commands try to put point |
9317a85d | 209 | at the same screen height as previously. */ |
9317a85d | 210 | |
5500c422 GM |
211 | Lisp_Object Vscroll_preserve_screen_position; |
212 | ||
213 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 214 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 215 | static int inhibit_frame_unsplittable; |
5500c422 | 216 | #endif /* 0 */ |
7d601aaa | 217 | |
31ade731 | 218 | extern EMACS_INT scroll_margin; |
9317a85d | 219 | |
dba06815 | 220 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
221 | \f |
222 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
223 | doc: /* Returns t if OBJECT is a window. */) |
224 | (object) | |
413430c5 | 225 | Lisp_Object object; |
7ab12479 | 226 | { |
413430c5 | 227 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
228 | } |
229 | ||
806b4d9b | 230 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 231 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
232 | (object) |
233 | Lisp_Object object; | |
605be8af | 234 | { |
9e571f49 | 235 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
236 | } |
237 | ||
7ab12479 JB |
238 | Lisp_Object |
239 | make_window () | |
240 | { | |
cffec418 | 241 | Lisp_Object val; |
7ab12479 | 242 | register struct window *p; |
cffec418 | 243 | |
26605be9 | 244 | p = allocate_window (); |
2a1893f4 SM |
245 | ++sequence_number; |
246 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
247 | XSETFASTINT (p->left_col, 0); |
248 | XSETFASTINT (p->top_line, 0); | |
249 | XSETFASTINT (p->total_lines, 0); | |
250 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 251 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 252 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 253 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
254 | p->start = Fmake_marker (); |
255 | p->pointm = Fmake_marker (); | |
d834a2e9 | 256 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 257 | p->frame = Qnil; |
7ab12479 JB |
258 | p->display_table = Qnil; |
259 | p->dedicated = Qnil; | |
5500c422 GM |
260 | p->pseudo_window_p = 0; |
261 | bzero (&p->cursor, sizeof (p->cursor)); | |
262 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
263 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
264 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 265 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 266 | p->phys_cursor_type = -1; |
4b26579e | 267 | p->phys_cursor_width = -1; |
5500c422 GM |
268 | p->must_be_updated_p = 0; |
269 | XSETFASTINT (p->window_end_vpos, 0); | |
270 | XSETFASTINT (p->window_end_pos, 0); | |
271 | p->window_end_valid = Qnil; | |
272 | p->vscroll = 0; | |
cffec418 | 273 | XSETWINDOW (val, p); |
5500c422 | 274 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 275 | p->frozen_window_start_p = 0; |
6b448755 | 276 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
277 | p->left_margin_cols = Qnil; |
278 | p->right_margin_cols = Qnil; | |
279 | p->left_fringe_width = Qnil; | |
280 | p->right_fringe_width = Qnil; | |
281 | p->fringes_outside_margins = Qnil; | |
282 | p->scroll_bar_width = Qnil; | |
283 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
284 | |
285 | Vwindow_list = Qnil; | |
7ab12479 JB |
286 | return val; |
287 | } | |
288 | ||
289 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
290 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
291 | () | |
7ab12479 JB |
292 | { |
293 | return selected_window; | |
294 | } | |
295 | ||
83762ba4 | 296 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
297 | doc: /* Return the window used now for minibuffers. |
298 | If the optional argument FRAME is specified, return the minibuffer window | |
299 | used by that frame. */) | |
300 | (frame) | |
83762ba4 | 301 | Lisp_Object frame; |
7ab12479 | 302 | { |
83762ba4 | 303 | if (NILP (frame)) |
1ae1a37d | 304 | frame = selected_frame; |
b7826503 | 305 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 306 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
307 | } |
308 | ||
605be8af | 309 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
29a831f8 LT |
310 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
311 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 312 | (window) |
7ab12479 JB |
313 | Lisp_Object window; |
314 | { | |
315 | struct window *w = decode_window (window); | |
53bb6b99 | 316 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
317 | } |
318 | ||
319 | ||
7ab12479 | 320 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 321 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 322 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
323 | Return nil if that position is scrolled vertically out of view. |
324 | If a character is only partially visible, nil is returned, unless the | |
325 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 326 | If POS is only out of view because of horizontal scrolling, return non-nil. |
0cc1039f KS |
327 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
328 | ||
329 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5b1ba1e3 KS |
330 | return value is a list (X Y PARTIAL) where X and Y are the pixel coordinates |
331 | relative to the top left corner of the window. PARTIAL is nil if the character | |
332 | after POS is fully visible; otherwise it is a cons (RTOP . RBOT) where RTOP | |
333 | and RBOT are the number of pixels invisible at the top and bottom of the row. */) | |
fdb82f93 | 334 | (pos, window, partially) |
5cdb3cf3 | 335 | Lisp_Object pos, window, partially; |
7ab12479 JB |
336 | { |
337 | register struct window *w; | |
7ab12479 JB |
338 | register int posint; |
339 | register struct buffer *buf; | |
9a132b1f | 340 | struct text_pos top; |
0cc1039f | 341 | Lisp_Object in_window = Qnil; |
e56263e5 | 342 | int rtop, rbot, fully_p = 1; |
0cc1039f | 343 | int x, y; |
7ab12479 | 344 | |
f28b75a9 MB |
345 | w = decode_window (window); |
346 | buf = XBUFFER (w->buffer); | |
347 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
348 | ||
349 | if (!NILP (pos)) | |
7ab12479 | 350 | { |
b7826503 | 351 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
352 | posint = XINT (pos); |
353 | } | |
f28b75a9 MB |
354 | else if (w == XWINDOW (selected_window)) |
355 | posint = PT; | |
356 | else | |
357 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 358 | |
0cc1039f KS |
359 | /* If position is above window start or outside buffer boundaries, |
360 | or if window start is out of range, position is not visible. */ | |
361 | if (posint >= CHARPOS (top) | |
362 | && posint <= BUF_ZV (buf) | |
363 | && CHARPOS (top) >= BUF_BEGV (buf) | |
364 | && CHARPOS (top) <= BUF_ZV (buf) | |
e56263e5 KS |
365 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, NILP (partially)) |
366 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
0cc1039f KS |
367 | in_window = Qt; |
368 | ||
369 | if (!NILP (in_window) && !NILP (partially)) | |
370 | in_window = Fcons (make_number (x), | |
371 | Fcons (make_number (y), | |
5b1ba1e3 KS |
372 | Fcons ((fully_p ? Qnil |
373 | : Fcons (make_number (rtop), | |
374 | make_number (rbot))), | |
375 | Qnil))); | |
9a132b1f | 376 | return in_window; |
7ab12479 | 377 | } |
53bb6b99 | 378 | |
7ab12479 JB |
379 | \f |
380 | static struct window * | |
381 | decode_window (window) | |
382 | register Lisp_Object window; | |
383 | { | |
265a9e55 | 384 | if (NILP (window)) |
7ab12479 JB |
385 | return XWINDOW (selected_window); |
386 | ||
b7826503 | 387 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
388 | return XWINDOW (window); |
389 | } | |
390 | ||
e995d23a RS |
391 | static struct window * |
392 | decode_any_window (window) | |
393 | register Lisp_Object window; | |
394 | { | |
395 | if (NILP (window)) | |
396 | return XWINDOW (selected_window); | |
397 | ||
398 | CHECK_WINDOW (window); | |
399 | return XWINDOW (window); | |
400 | } | |
401 | ||
7ab12479 | 402 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
403 | doc: /* Return the buffer that WINDOW is displaying. |
404 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 405 | (window) |
7ab12479 JB |
406 | Lisp_Object window; |
407 | { | |
408 | return decode_window (window)->buffer; | |
409 | } | |
410 | ||
411 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
412 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
413 | (window) | |
7ab12479 JB |
414 | Lisp_Object window; |
415 | { | |
e995d23a | 416 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
417 | } |
418 | ||
419 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
420 | doc: /* Return the number of display columns in WINDOW. |
421 | This is the width that is usable columns available for text in WINDOW. | |
422 | If you want to find out how many columns WINDOW takes up, | |
423 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
424 | (window) | |
7ab12479 JB |
425 | Lisp_Object window; |
426 | { | |
e995d23a | 427 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
428 | } |
429 | ||
430 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
431 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
432 | (window) | |
7ab12479 JB |
433 | Lisp_Object window; |
434 | { | |
435 | return decode_window (window)->hscroll; | |
436 | } | |
437 | ||
438 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 439 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 440 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
441 | |
442 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
443 | window so that the location of point becomes invisible. */) | |
fdb82f93 | 444 | (window, ncol) |
ea68264b | 445 | Lisp_Object window, ncol; |
7ab12479 | 446 | { |
ea68264b GM |
447 | struct window *w = decode_window (window); |
448 | int hscroll; | |
7ab12479 | 449 | |
b7826503 | 450 | CHECK_NUMBER (ncol); |
ea68264b | 451 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 452 | |
ea68264b GM |
453 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
454 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 455 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 456 | |
c67fa410 | 457 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
458 | return ncol; |
459 | } | |
460 | ||
190eb263 RS |
461 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
462 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
463 | doc: /* Return WINDOW's redisplay end trigger value. |
464 | See `set-window-redisplay-end-trigger' for more information. */) | |
465 | (window) | |
190eb263 RS |
466 | Lisp_Object window; |
467 | { | |
468 | return decode_window (window)->redisplay_end_trigger; | |
469 | } | |
470 | ||
471 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
472 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
473 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
474 | VALUE should be a buffer position (typically a marker) or nil. | |
475 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
476 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
477 | with two arguments: WINDOW, and the end trigger value. | |
478 | Afterwards the end-trigger value is reset to nil. */) | |
479 | (window, value) | |
190eb263 RS |
480 | register Lisp_Object window, value; |
481 | { | |
482 | register struct window *w; | |
483 | ||
484 | w = decode_window (window); | |
485 | w->redisplay_end_trigger = value; | |
486 | return value; | |
487 | } | |
488 | ||
7ab12479 | 489 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
490 | doc: /* Return a list of the edge coordinates of WINDOW. |
491 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
492 | RIGHT is one more than the rightmost column occupied by WINDOW, |
493 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
494 | The edges include the space used by the window's scroll bar, | |
495 | display margins, fringes, header line, and mode line, if it has them. | |
496 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 497 | (window) |
7ab12479 JB |
498 | Lisp_Object window; |
499 | { | |
e995d23a | 500 | register struct window *w = decode_any_window (window); |
7ab12479 | 501 | |
949cf20f KS |
502 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
503 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
504 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
505 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
506 | Qnil)))); | |
7ab12479 JB |
507 | } |
508 | ||
c99a9eb3 RS |
509 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
510 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
511 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
512 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
513 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
514 | The pixel edges include the space used by the window's scroll bar, | |
515 | display margins, fringes, header line, and mode line, if it has them. | |
516 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
517 | (window) | |
518 | Lisp_Object window; | |
519 | { | |
e995d23a | 520 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
521 | |
522 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
523 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
524 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
525 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
526 | Qnil)))); | |
527 | } | |
528 | ||
529 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
530 | doc: /* Return a list of the edge coordinates of WINDOW. | |
531 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
532 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
533 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
534 | The inside edges do not include the space used by the window's scroll bar, | |
535 | display margins, fringes, header line, and/or mode line. */) | |
536 | (window) | |
537 | Lisp_Object window; | |
538 | { | |
e995d23a | 539 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
540 | |
541 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
542 | + WINDOW_LEFT_MARGIN_COLS (w) | |
543 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
544 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
545 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 546 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
547 | - WINDOW_RIGHT_MARGIN_COLS (w) |
548 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
549 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
550 | - WINDOW_MODE_LINE_LINES (w))); | |
551 | } | |
552 | ||
553 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 554 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
555 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
556 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
557 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
558 | The inside edges do not include the space used by the window's scroll bar, | |
559 | display margins, fringes, header line, and/or mode line. */) | |
560 | (window) | |
561 | Lisp_Object window; | |
562 | { | |
e995d23a | 563 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
564 | |
565 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
566 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
567 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
568 | make_number (WINDOW_TOP_EDGE_Y (w) | |
569 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 570 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
571 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
572 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
573 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
574 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
575 | } | |
576 | ||
fbad6f9a | 577 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 578 | If it is not, return ON_NOTHING; |
d5783c40 JB |
579 | if it is in the window's text area, |
580 | set *x and *y to its location relative to the upper left corner | |
581 | of the window, and | |
341f3858 KS |
582 | return ON_TEXT; |
583 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 584 | if it is on the border between the window and its right sibling, |
341f3858 | 585 | return ON_VERTICAL_BORDER. |
6487f669 RS |
586 | if it is on a scroll bar, |
587 | return ON_SCROLL_BAR. | |
341f3858 | 588 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 589 | if it is in left or right fringe of the window, |
341f3858 KS |
590 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
591 | to window-relative coordinates; | |
49b996e7 | 592 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
593 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
594 | to window-relative coordinates. | |
5500c422 GM |
595 | |
596 | X and Y are frame relative pixel coordinates. */ | |
597 | ||
7442878f | 598 | static enum window_part |
d5783c40 JB |
599 | coordinates_in_window (w, x, y) |
600 | register struct window *w; | |
601 | register int *x, *y; | |
602 | { | |
b0228ace GM |
603 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
604 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 605 | enum window_part part; |
949cf20f KS |
606 | int ux = FRAME_COLUMN_WIDTH (f); |
607 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
608 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
609 | /* The width of the area where the vertical line can be dragged. |
610 | (Between mode lines for instance. */ | |
611 | int grabbable_width = ux; | |
949cf20f | 612 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 613 | |
466539bc EZ |
614 | /* In what's below, we subtract 1 when computing right_x because we |
615 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
616 | if (w->pseudo_window_p) |
617 | { | |
618 | left_x = 0; | |
949cf20f KS |
619 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
620 | top_y = WINDOW_TOP_EDGE_Y (w); | |
621 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
622 | } |
623 | else | |
624 | { | |
949cf20f KS |
625 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
626 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
627 | top_y = WINDOW_TOP_EDGE_Y (w); | |
628 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 629 | } |
37962e60 | 630 | |
949cf20f KS |
631 | /* Outside any interesting row? */ |
632 | if (*y < top_y || *y >= bottom_y) | |
633 | return ON_NOTHING; | |
634 | ||
1cb794ba GM |
635 | /* On the mode line or header line? If it's near the start of |
636 | the mode or header line of window that's has a horizontal | |
637 | sibling, say it's on the vertical line. That's to be able | |
638 | to resize windows horizontally in case we're using toolkit | |
639 | scroll bars. */ | |
b0228ace | 640 | |
1cb794ba | 641 | if (WINDOW_WANTS_MODELINE_P (w) |
0de01dfe | 642 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 643 | { |
949cf20f KS |
644 | part = ON_MODE_LINE; |
645 | ||
646 | header_vertical_border_check: | |
b0228ace GM |
647 | /* We're somewhere on the mode line. We consider the place |
648 | between mode lines of horizontally adjacent mode lines | |
649 | as the vertical border. If scroll bars on the left, | |
650 | return the right window. */ | |
949cf20f KS |
651 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
652 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 653 | { |
949cf20f KS |
654 | if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width) |
655 | return ON_VERTICAL_BORDER; | |
b0228ace | 656 | } |
79fd290e | 657 | else |
b0228ace | 658 | { |
949cf20f KS |
659 | if (abs (*x - x1) < grabbable_width) |
660 | return ON_VERTICAL_BORDER; | |
b0228ace | 661 | } |
949cf20f | 662 | |
cb639b8f KS |
663 | if (*x < x0 || *x >= x1) |
664 | return ON_NOTHING; | |
665 | ||
a5303820 KS |
666 | /* Convert X and Y to window relative coordinates. |
667 | Mode line starts at left edge of window. */ | |
668 | *x -= x0; | |
669 | *y -= top_y; | |
949cf20f | 670 | return part; |
b0228ace | 671 | } |
949cf20f KS |
672 | |
673 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 674 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 675 | { |
949cf20f KS |
676 | part = ON_HEADER_LINE; |
677 | goto header_vertical_border_check; | |
1cb794ba | 678 | } |
949cf20f | 679 | |
cb639b8f KS |
680 | if (*x < x0 || *x >= x1) |
681 | return ON_NOTHING; | |
682 | ||
949cf20f KS |
683 | /* Outside any interesting column? */ |
684 | if (*x < left_x || *x > right_x) | |
6487f669 | 685 | return ON_SCROLL_BAR; |
949cf20f KS |
686 | |
687 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
688 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 689 | |
949cf20f KS |
690 | text_left = window_box_left (w, TEXT_AREA); |
691 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
692 | ||
693 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 694 | { |
447e9da0 | 695 | if (!w->pseudo_window_p |
949cf20f | 696 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 697 | && !WINDOW_RIGHTMOST_P (w) |
949cf20f KS |
698 | && (abs (*x - right_x) < grabbable_width)) |
699 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 700 | } |
447e9da0 GM |
701 | else |
702 | { | |
703 | /* Need to say "*x > right_x" rather than >=, since on character | |
704 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
705 | if (!w->pseudo_window_p |
706 | && !WINDOW_RIGHTMOST_P (w) | |
707 | && *x > right_x - ux) | |
b0228ace GM |
708 | { |
709 | /* On the border on the right side of the window? Assume that | |
710 | this area begins at RIGHT_X minus a canonical char width. */ | |
949cf20f | 711 | return ON_VERTICAL_BORDER; |
b0228ace | 712 | } |
447e9da0 | 713 | } |
b0228ace | 714 | |
949cf20f KS |
715 | if (*x < text_left) |
716 | { | |
717 | if (lmargin_width > 0 | |
718 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
719 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
720 | : (*x < left_x + lmargin_width))) | |
a5303820 | 721 | { |
0de01dfe | 722 | *x -= left_x; |
a5303820 KS |
723 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
724 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
725 | *y -= top_y; | |
726 | return ON_LEFT_MARGIN; | |
727 | } | |
949cf20f KS |
728 | |
729 | /* Convert X and Y to window-relative pixel coordinates. */ | |
730 | *x -= left_x; | |
731 | *y -= top_y; | |
732 | return ON_LEFT_FRINGE; | |
733 | } | |
734 | ||
735 | if (*x >= text_right) | |
736 | { | |
737 | if (rmargin_width > 0 | |
738 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
739 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
740 | : (*x >= right_x - rmargin_width))) | |
a5303820 KS |
741 | { |
742 | *x -= right_x; | |
743 | if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
744 | *x -= WINDOW_RIGHT_FRINGE_WIDTH (w); | |
745 | *y -= top_y; | |
746 | return ON_RIGHT_MARGIN; | |
747 | } | |
949cf20f KS |
748 | |
749 | /* Convert X and Y to window-relative pixel coordinates. */ | |
750 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
751 | *y -= top_y; | |
752 | return ON_RIGHT_FRINGE; | |
753 | } | |
754 | ||
755 | /* Everything special ruled out - must be on text area */ | |
756 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
757 | *y -= top_y; | |
758 | return ON_TEXT; | |
d5783c40 JB |
759 | } |
760 | ||
b0228ace | 761 | |
d5783c40 | 762 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
763 | Scoordinates_in_window_p, 2, 2, 0, |
764 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
765 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
766 | measured in characters from the upper-left corner of the frame. | |
767 | \(0 . 0) denotes the character in the upper left corner of the | |
768 | frame. | |
769 | If COORDINATES are in the text portion of WINDOW, | |
770 | the coordinates relative to the window are returned. | |
771 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
772 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
773 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
774 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 775 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
776 | `vertical-line' is returned. |
777 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
778 | or `right-margin' is returned. */) | |
fdb82f93 | 779 | (coordinates, window) |
d5783c40 JB |
780 | register Lisp_Object coordinates, window; |
781 | { | |
5500c422 GM |
782 | struct window *w; |
783 | struct frame *f; | |
d5783c40 | 784 | int x, y; |
5500c422 | 785 | Lisp_Object lx, ly; |
d5783c40 | 786 | |
e995d23a | 787 | CHECK_WINDOW (window); |
5500c422 GM |
788 | w = XWINDOW (window); |
789 | f = XFRAME (w->frame); | |
b7826503 | 790 | CHECK_CONS (coordinates); |
5500c422 GM |
791 | lx = Fcar (coordinates); |
792 | ly = Fcdr (coordinates); | |
b7826503 PJ |
793 | CHECK_NUMBER_OR_FLOAT (lx); |
794 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
795 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
796 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
797 | |
798 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 799 | { |
7442878f | 800 | case ON_NOTHING: |
d5783c40 JB |
801 | return Qnil; |
802 | ||
7442878f GM |
803 | case ON_TEXT: |
804 | /* X and Y are now window relative pixel coordinates. Convert | |
805 | them to canonical char units before returning them. */ | |
949cf20f KS |
806 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
807 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 808 | |
7442878f | 809 | case ON_MODE_LINE: |
d5783c40 | 810 | return Qmode_line; |
37962e60 | 811 | |
7442878f | 812 | case ON_VERTICAL_BORDER: |
e5d77022 | 813 | return Qvertical_line; |
d5783c40 | 814 | |
7442878f | 815 | case ON_HEADER_LINE: |
045dee35 | 816 | return Qheader_line; |
5500c422 | 817 | |
7442878f GM |
818 | case ON_LEFT_FRINGE: |
819 | return Qleft_fringe; | |
177c0ea7 | 820 | |
7442878f GM |
821 | case ON_RIGHT_FRINGE: |
822 | return Qright_fringe; | |
fbad6f9a | 823 | |
49b996e7 GM |
824 | case ON_LEFT_MARGIN: |
825 | return Qleft_margin; | |
177c0ea7 | 826 | |
49b996e7 GM |
827 | case ON_RIGHT_MARGIN: |
828 | return Qright_margin; | |
829 | ||
6487f669 RS |
830 | case ON_SCROLL_BAR: |
831 | /* Historically we are supposed to return nil in this case. */ | |
832 | return Qnil; | |
833 | ||
d5783c40 JB |
834 | default: |
835 | abort (); | |
836 | } | |
837 | } | |
838 | ||
67492200 GM |
839 | |
840 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
841 | Check if window W contains coordinates specified by USER_DATA which |
842 | is actually a pointer to a struct check_window_data CW. | |
843 | ||
844 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
845 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 846 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
847 | zero from this function to stop iterating over windows. */ |
848 | ||
849 | struct check_window_data | |
850 | { | |
851 | Lisp_Object *window; | |
341f3858 KS |
852 | int *x, *y; |
853 | enum window_part *part; | |
f95464e4 | 854 | }; |
67492200 GM |
855 | |
856 | static int | |
f95464e4 | 857 | check_window_containing (w, user_data) |
67492200 | 858 | struct window *w; |
f95464e4 | 859 | void *user_data; |
67492200 | 860 | { |
f95464e4 | 861 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
862 | enum window_part found; |
863 | int continue_p = 1; | |
67492200 | 864 | |
f95464e4 | 865 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 866 | if (found != ON_NOTHING) |
67492200 | 867 | { |
341f3858 | 868 | *cw->part = found; |
f95464e4 | 869 | XSETWINDOW (*cw->window, w); |
7442878f | 870 | continue_p = 0; |
67492200 | 871 | } |
177c0ea7 | 872 | |
7442878f | 873 | return continue_p; |
67492200 GM |
874 | } |
875 | ||
876 | ||
5500c422 | 877 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
878 | return it as a Lisp_Object. |
879 | ||
880 | If X, Y is on one of the window's special `window_part' elements, | |
881 | set *PART to the id of that element, and return X and Y converted | |
882 | to window relative coordinates in WX and WY. | |
883 | ||
341f3858 | 884 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
885 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
886 | ||
887 | This function was previously implemented with a loop cycling over | |
888 | windows with Fnext_window, and starting with the frame's selected | |
889 | window. It turned out that this doesn't work with an | |
890 | implementation of next_window using Vwindow_list, because | |
891 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
892 | tree of F when this function is called asynchronously from | |
893 | note_mouse_highlight. The original loop didn't terminate in this | |
894 | case. */ | |
5500c422 | 895 | |
7ab12479 | 896 | Lisp_Object |
949cf20f | 897 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 898 | struct frame *f; |
7ab12479 | 899 | int x, y; |
341f3858 | 900 | enum window_part *part; |
949cf20f | 901 | int *wx, *wy; |
9ea173e8 | 902 | int tool_bar_p; |
7ab12479 | 903 | { |
67492200 | 904 | Lisp_Object window; |
f95464e4 | 905 | struct check_window_data cw; |
341f3858 KS |
906 | enum window_part dummy; |
907 | ||
908 | if (part == 0) | |
909 | part = &dummy; | |
5500c422 | 910 | |
67492200 | 911 | window = Qnil; |
f95464e4 GM |
912 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
913 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 914 | |
67492200 GM |
915 | /* If not found above, see if it's in the tool bar window, if a tool |
916 | bar exists. */ | |
917 | if (NILP (window) | |
918 | && tool_bar_p | |
919 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 920 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
921 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
922 | != ON_NOTHING)) | |
5500c422 | 923 | { |
341f3858 | 924 | *part = ON_TEXT; |
67492200 | 925 | window = f->tool_bar_window; |
5500c422 | 926 | } |
37962e60 | 927 | |
949cf20f KS |
928 | if (wx) *wx = x; |
929 | if (wy) *wy = y; | |
930 | ||
67492200 | 931 | return window; |
7ab12479 JB |
932 | } |
933 | ||
ab17c3f2 | 934 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
935 | doc: /* Return window containing coordinates X and Y on FRAME. |
936 | If omitted, FRAME defaults to the currently selected frame. | |
937 | The top left corner of the frame is considered to be row 0, | |
938 | column 0. */) | |
939 | (x, y, frame) | |
940 | Lisp_Object x, y, frame; | |
7ab12479 | 941 | { |
5500c422 | 942 | struct frame *f; |
7ab12479 | 943 | |
44fa5b1e | 944 | if (NILP (frame)) |
1ae1a37d | 945 | frame = selected_frame; |
b7826503 | 946 | CHECK_LIVE_FRAME (frame); |
5500c422 | 947 | f = XFRAME (frame); |
7ab12479 | 948 | |
5500c422 | 949 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
950 | CHECK_NUMBER_OR_FLOAT (x); |
951 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 952 | |
177c0ea7 | 953 | return window_from_coordinates (f, |
2c77cf3b RS |
954 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
955 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
956 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
957 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 958 | 0, 0, 0, 0); |
7ab12479 JB |
959 | } |
960 | ||
961 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
962 | doc: /* Return current value of point in WINDOW. |
963 | For a nonselected window, this is the value point would have | |
964 | if that window were selected. | |
965 | ||
966 | Note that, when WINDOW is the selected window and its buffer | |
967 | is also currently selected, the value returned is the same as (point). | |
968 | It would be more strictly correct to return the `top-level' value | |
969 | of point, outside of any save-excursion forms. | |
970 | But that is hard to define. */) | |
971 | (window) | |
7ab12479 JB |
972 | Lisp_Object window; |
973 | { | |
974 | register struct window *w = decode_window (window); | |
975 | ||
976 | if (w == XWINDOW (selected_window) | |
977 | && current_buffer == XBUFFER (w->buffer)) | |
978 | return Fpoint (); | |
979 | return Fmarker_position (w->pointm); | |
980 | } | |
981 | ||
982 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
983 | doc: /* Return position at which display currently starts in WINDOW. |
984 | This is updated by redisplay or by calling `set-window-start'. */) | |
985 | (window) | |
7ab12479 JB |
986 | Lisp_Object window; |
987 | { | |
988 | return Fmarker_position (decode_window (window)->start); | |
989 | } | |
990 | ||
8646118f RS |
991 | /* This is text temporarily removed from the doc string below. |
992 | ||
fdb82f93 PJ |
993 | This function returns nil if the position is not currently known. |
994 | That happens when redisplay is preempted and doesn't finish. | |
995 | If in that case you want to compute where the end of the window would | |
996 | have been if redisplay had finished, do this: | |
997 | (save-excursion | |
998 | (goto-char (window-start window)) | |
999 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1000 | (point))") */ |
1001 | ||
478292ed | 1002 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
1003 | doc: /* Return position at which display currently ends in WINDOW. |
1004 | This is updated by redisplay, when it runs to completion. | |
1005 | Simply changing the buffer text or setting `window-start' | |
1006 | does not update this value. | |
a0a37a6f LT |
1007 | Return nil if there is no recorded value. \(This can happen if the |
1008 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1009 | If UPDATE is non-nil, compute the up-to-date position |
1010 | if it isn't already recorded. */) | |
1011 | (window, update) | |
478292ed | 1012 | Lisp_Object window, update; |
7ab12479 JB |
1013 | { |
1014 | Lisp_Object value; | |
1015 | struct window *w = decode_window (window); | |
5a41ab94 RS |
1016 | Lisp_Object buf; |
1017 | ||
1018 | buf = w->buffer; | |
b7826503 | 1019 | CHECK_BUFFER (buf); |
5a41ab94 | 1020 | |
8646118f | 1021 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1022 | /* If we don't know the end position, return nil. |
1023 | The user can compute it with vertical-motion if he wants to. | |
1024 | It would be nicer to do it automatically, | |
1025 | but that's so slow that it would probably bother people. */ | |
1026 | if (NILP (w->window_end_valid)) | |
1027 | return Qnil; | |
8646118f | 1028 | #endif |
7250968e | 1029 | |
478292ed RS |
1030 | if (! NILP (update) |
1031 | && ! (! NILP (w->window_end_valid) | |
41791a20 RF |
1032 | && XFASTINT (w->last_modified) >= MODIFF) |
1033 | && !noninteractive) | |
478292ed | 1034 | { |
cbc099e5 GM |
1035 | struct text_pos startp; |
1036 | struct it it; | |
99593a9d | 1037 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
1038 | |
1039 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1040 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1041 | `-l' containing a call to `rmail' with subsequent other |
1042 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1043 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1044 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1045 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1046 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1047 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1048 | else |
cbc099e5 GM |
1049 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1050 | ||
1051 | /* Cannot use Fvertical_motion because that function doesn't | |
1052 | cope with variable-height lines. */ | |
99593a9d GM |
1053 | if (b != current_buffer) |
1054 | { | |
1055 | old_buffer = current_buffer; | |
1056 | set_buffer_internal (b); | |
1057 | } | |
177c0ea7 | 1058 | |
cbc099e5 GM |
1059 | start_display (&it, w, startp); |
1060 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1061 | if (it.current_y < it.last_visible_y) |
1062 | move_it_past_eol (&it); | |
cbc099e5 | 1063 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1064 | |
99593a9d GM |
1065 | if (old_buffer) |
1066 | set_buffer_internal (old_buffer); | |
478292ed RS |
1067 | } |
1068 | else | |
cbc099e5 | 1069 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1070 | |
1071 | return value; | |
1072 | } | |
1073 | ||
1074 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1075 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1076 | Return POS. */) | |
fdb82f93 | 1077 | (window, pos) |
7ab12479 JB |
1078 | Lisp_Object window, pos; |
1079 | { | |
1080 | register struct window *w = decode_window (window); | |
1081 | ||
b7826503 | 1082 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1083 | if (w == XWINDOW (selected_window) |
1084 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1085 | Fgoto_char (pos); |
1086 | else | |
1087 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1088 | |
0685cb3c GM |
1089 | /* We have to make sure that redisplay updates the window to show |
1090 | the new value of point. */ | |
1091 | if (!EQ (window, selected_window)) | |
799417bd | 1092 | ++windows_or_buffers_changed; |
177c0ea7 | 1093 | |
7ab12479 JB |
1094 | return pos; |
1095 | } | |
1096 | ||
1097 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1098 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1099 | Return POS. |
fdb82f93 PJ |
1100 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1101 | from overriding motion of point in order to display at this exact start. */) | |
1102 | (window, pos, noforce) | |
7ab12479 JB |
1103 | Lisp_Object window, pos, noforce; |
1104 | { | |
1105 | register struct window *w = decode_window (window); | |
1106 | ||
b7826503 | 1107 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1108 | set_marker_restricted (w->start, pos, w->buffer); |
1109 | /* this is not right, but much easier than doing what is right. */ | |
1110 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1111 | if (NILP (noforce)) |
7ab12479 JB |
1112 | w->force_start = Qt; |
1113 | w->update_mode_line = Qt; | |
d834a2e9 | 1114 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1115 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1116 | if (!EQ (window, selected_window)) |
1117 | windows_or_buffers_changed++; | |
ce7fae7d | 1118 | |
7ab12479 JB |
1119 | return pos; |
1120 | } | |
1121 | ||
1122 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1123 | 1, 1, 0, | |
fdb82f93 PJ |
1124 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1125 | See also `set-window-dedicated-p'. */) | |
1126 | (window) | |
7ab12479 JB |
1127 | Lisp_Object window; |
1128 | { | |
1129 | return decode_window (window)->dedicated; | |
1130 | } | |
1131 | ||
d207b766 RS |
1132 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1133 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1134 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1135 | If it is dedicated, Emacs will not automatically change | |
1136 | which buffer appears in it. | |
1137 | The second argument is the new value for the dedication flag; | |
1138 | non-nil means yes. */) | |
1139 | (window, arg) | |
1140 | Lisp_Object window, arg; | |
7ab12479 JB |
1141 | { |
1142 | register struct window *w = decode_window (window); | |
1143 | ||
2d0834cc | 1144 | w->dedicated = arg; |
7ab12479 JB |
1145 | |
1146 | return w->dedicated; | |
1147 | } | |
1148 | ||
1149 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1150 | 0, 1, 0, | |
fdb82f93 PJ |
1151 | doc: /* Return the display-table that WINDOW is using. */) |
1152 | (window) | |
7ab12479 JB |
1153 | Lisp_Object window; |
1154 | { | |
1155 | return decode_window (window)->display_table; | |
1156 | } | |
1157 | ||
5500c422 GM |
1158 | /* Get the display table for use on window W. This is either W's |
1159 | display table or W's buffer's display table. Ignore the specified | |
1160 | tables if they are not valid; if no valid table is specified, | |
1161 | return 0. */ | |
7ab12479 | 1162 | |
319315f1 | 1163 | struct Lisp_Char_Table * |
7ab12479 JB |
1164 | window_display_table (w) |
1165 | struct window *w; | |
1166 | { | |
c756cdbe GM |
1167 | struct Lisp_Char_Table *dp = NULL; |
1168 | ||
1169 | if (DISP_TABLE_P (w->display_table)) | |
1170 | dp = XCHAR_TABLE (w->display_table); | |
1171 | else if (BUFFERP (w->buffer)) | |
1172 | { | |
1173 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1174 | |
c756cdbe GM |
1175 | if (DISP_TABLE_P (b->display_table)) |
1176 | dp = XCHAR_TABLE (b->display_table); | |
1177 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1178 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1179 | } | |
171d003c | 1180 | |
c756cdbe | 1181 | return dp; |
7ab12479 JB |
1182 | } |
1183 | ||
3a2712f9 | 1184 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1185 | doc: /* Set WINDOW's display-table to TABLE. */) |
1186 | (window, table) | |
7ab12479 JB |
1187 | register Lisp_Object window, table; |
1188 | { | |
1189 | register struct window *w; | |
7ab12479 JB |
1190 | |
1191 | w = decode_window (window); | |
1192 | w->display_table = table; | |
1193 | return table; | |
1194 | } | |
1195 | \f | |
1196 | /* Record info on buffer window w is displaying | |
1197 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1198 | static void |
7ab12479 JB |
1199 | unshow_buffer (w) |
1200 | register struct window *w; | |
1201 | { | |
12cae7c0 | 1202 | Lisp_Object buf; |
b73ea88e | 1203 | struct buffer *b; |
7ab12479 | 1204 | |
12cae7c0 | 1205 | buf = w->buffer; |
b73ea88e RS |
1206 | b = XBUFFER (buf); |
1207 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1208 | abort (); |
1209 | ||
573f41ab | 1210 | #if 0 |
7ab12479 JB |
1211 | if (w == XWINDOW (selected_window) |
1212 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1213 | /* Do this except when the selected window's buffer | |
1214 | is being removed from some other window. */ | |
573f41ab RS |
1215 | #endif |
1216 | /* last_window_start records the start position that this buffer | |
1217 | had in the last window to be disconnected from it. | |
1218 | Now that this statement is unconditional, | |
1219 | it is possible for the buffer to be displayed in the | |
1220 | selected window, while last_window_start reflects another | |
1221 | window which was recently showing the same buffer. | |
1222 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1223 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1224 | |
1225 | /* Point in the selected window's buffer | |
1226 | is actually stored in that buffer, and the window's pointm isn't used. | |
1227 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1228 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1229 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1230 | && !(WINDOWP (b->last_selected_window) |
1231 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1232 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1233 | temp_set_point_both (b, |
1234 | clip_to_bounds (BUF_BEGV (b), | |
1235 | XMARKER (w->pointm)->charpos, | |
1236 | BUF_ZV (b)), | |
1237 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1238 | marker_byte_position (w->pointm), | |
1239 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1240 | |
8801a864 KR |
1241 | if (WINDOWP (b->last_selected_window) |
1242 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1243 | b->last_selected_window = Qnil; |
7ab12479 JB |
1244 | } |
1245 | ||
1246 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1247 | static void |
7ab12479 JB |
1248 | replace_window (old, replacement) |
1249 | Lisp_Object old, replacement; | |
1250 | { | |
1251 | register Lisp_Object tem; | |
1252 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1253 | ||
44fa5b1e JB |
1254 | /* If OLD is its frame's root_window, then replacement is the new |
1255 | root_window for that frame. */ | |
7ab12479 | 1256 | |
7f4161e0 | 1257 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1258 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1259 | |
949cf20f KS |
1260 | p->left_col = o->left_col; |
1261 | p->top_line = o->top_line; | |
1262 | p->total_cols = o->total_cols; | |
1263 | p->total_lines = o->total_lines; | |
5500c422 GM |
1264 | p->desired_matrix = p->current_matrix = 0; |
1265 | p->vscroll = 0; | |
1266 | bzero (&p->cursor, sizeof (p->cursor)); | |
1267 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1268 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1269 | p->phys_cursor_type = -1; | |
4b26579e | 1270 | p->phys_cursor_width = -1; |
5500c422 GM |
1271 | p->must_be_updated_p = 0; |
1272 | p->pseudo_window_p = 0; | |
1273 | XSETFASTINT (p->window_end_vpos, 0); | |
1274 | XSETFASTINT (p->window_end_pos, 0); | |
1275 | p->window_end_valid = Qnil; | |
7bbb5782 | 1276 | p->frozen_window_start_p = 0; |
949cf20f | 1277 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1278 | |
1279 | p->next = tem = o->next; | |
265a9e55 | 1280 | if (!NILP (tem)) |
7ab12479 JB |
1281 | XWINDOW (tem)->prev = replacement; |
1282 | ||
1283 | p->prev = tem = o->prev; | |
265a9e55 | 1284 | if (!NILP (tem)) |
7ab12479 JB |
1285 | XWINDOW (tem)->next = replacement; |
1286 | ||
1287 | p->parent = tem = o->parent; | |
265a9e55 | 1288 | if (!NILP (tem)) |
7ab12479 JB |
1289 | { |
1290 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1291 | XWINDOW (tem)->vchild = replacement; | |
1292 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1293 | XWINDOW (tem)->hchild = replacement; | |
1294 | } | |
1295 | ||
1296 | /*** Here, if replacement is a vertical combination | |
1297 | and so is its new parent, we should make replacement's | |
1298 | children be children of that parent instead. ***/ | |
1299 | } | |
1300 | ||
1301 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1302 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1303 | (window) | |
7ab12479 | 1304 | register Lisp_Object window; |
543f5fb1 RS |
1305 | { |
1306 | delete_window (window); | |
1307 | ||
1308 | if (! NILP (Vwindow_configuration_change_hook) | |
1309 | && ! NILP (Vrun_hooks)) | |
1310 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1311 | ||
1312 | return Qnil; | |
1313 | } | |
1314 | ||
5e14b1fc | 1315 | void |
543f5fb1 RS |
1316 | delete_window (window) |
1317 | register Lisp_Object window; | |
7ab12479 JB |
1318 | { |
1319 | register Lisp_Object tem, parent, sib; | |
1320 | register struct window *p; | |
1321 | register struct window *par; | |
951f9df5 | 1322 | struct frame *f; |
7ab12479 | 1323 | |
605be8af JB |
1324 | /* Because this function is called by other C code on non-leaf |
1325 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1326 | so we can't decode_window here. */ | |
265a9e55 | 1327 | if (NILP (window)) |
7ab12479 JB |
1328 | window = selected_window; |
1329 | else | |
b7826503 | 1330 | CHECK_WINDOW (window); |
7ab12479 | 1331 | p = XWINDOW (window); |
605be8af JB |
1332 | |
1333 | /* It's okay to delete an already-deleted window. */ | |
1334 | if (NILP (p->buffer) | |
1335 | && NILP (p->hchild) | |
1336 | && NILP (p->vchild)) | |
296b535c | 1337 | return; |
605be8af | 1338 | |
7ab12479 | 1339 | parent = p->parent; |
265a9e55 | 1340 | if (NILP (parent)) |
7ab12479 JB |
1341 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1342 | par = XWINDOW (parent); | |
1343 | ||
1344 | windows_or_buffers_changed++; | |
67492200 | 1345 | Vwindow_list = Qnil; |
951f9df5 GM |
1346 | f = XFRAME (WINDOW_FRAME (p)); |
1347 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1348 | |
605be8af JB |
1349 | /* Are we trying to delete any frame's selected window? */ |
1350 | { | |
192c3131 | 1351 | Lisp_Object swindow, pwindow; |
605be8af | 1352 | |
0def0403 RS |
1353 | /* See if the frame's selected window is either WINDOW |
1354 | or any subwindow of it, by finding all that window's parents | |
1355 | and comparing each one with WINDOW. */ | |
192c3131 | 1356 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1357 | |
192c3131 | 1358 | while (1) |
0def0403 | 1359 | { |
192c3131 RS |
1360 | pwindow = swindow; |
1361 | while (!NILP (pwindow)) | |
1362 | { | |
1363 | if (EQ (window, pwindow)) | |
1364 | break; | |
1365 | pwindow = XWINDOW (pwindow)->parent; | |
1366 | } | |
1367 | ||
1368 | /* If the window being deleted is not a parent of SWINDOW, | |
1369 | then SWINDOW is ok as the new selected window. */ | |
1370 | if (!EQ (window, pwindow)) | |
0def0403 | 1371 | break; |
192c3131 RS |
1372 | /* Otherwise, try another window for SWINDOW. */ |
1373 | swindow = Fnext_window (swindow, Qlambda, Qnil);; | |
1374 | ||
1375 | /* If we get back to the frame's selected window, | |
1376 | it means there was no acceptable alternative, | |
1377 | so we cannot delete. */ | |
1378 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1379 | error ("Cannot delete window"); | |
0def0403 RS |
1380 | } |
1381 | ||
192c3131 RS |
1382 | /* If we need to change SWINDOW, do it. */ |
1383 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1384 | { |
605be8af JB |
1385 | /* If we're about to delete the selected window on the |
1386 | selected frame, then we should use Fselect_window to select | |
1387 | the new window. On the other hand, if we're about to | |
1388 | delete the selected window on any other frame, we shouldn't do | |
1389 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1390 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1391 | Fselect_window (swindow, Qnil); |
605be8af | 1392 | else |
192c3131 | 1393 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1394 | } |
1395 | } | |
7ab12479 JB |
1396 | |
1397 | tem = p->buffer; | |
1398 | /* tem is null for dummy parent windows | |
1399 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1400 | if (!NILP (tem)) |
7ab12479 JB |
1401 | { |
1402 | unshow_buffer (p); | |
2d0834cc SM |
1403 | unchain_marker (XMARKER (p->pointm)); |
1404 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1405 | } |
1406 | ||
05e71564 GM |
1407 | /* Free window glyph matrices. It is sure that they are allocated |
1408 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1409 | events and other events that access glyph matrices are not | |
1410 | processed while we are changing them. */ | |
1411 | BLOCK_INPUT; | |
951f9df5 | 1412 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1413 | |
7ab12479 | 1414 | tem = p->next; |
265a9e55 | 1415 | if (!NILP (tem)) |
7ab12479 JB |
1416 | XWINDOW (tem)->prev = p->prev; |
1417 | ||
1418 | tem = p->prev; | |
265a9e55 | 1419 | if (!NILP (tem)) |
7ab12479 JB |
1420 | XWINDOW (tem)->next = p->next; |
1421 | ||
1422 | if (EQ (window, par->hchild)) | |
1423 | par->hchild = p->next; | |
1424 | if (EQ (window, par->vchild)) | |
1425 | par->vchild = p->next; | |
1426 | ||
1427 | /* Find one of our siblings to give our space to. */ | |
1428 | sib = p->prev; | |
265a9e55 | 1429 | if (NILP (sib)) |
7ab12479 JB |
1430 | { |
1431 | /* If p gives its space to its next sibling, that sibling needs | |
1432 | to have its top/left side pulled back to where p's is. | |
1433 | set_window_{height,width} will re-position the sibling's | |
1434 | children. */ | |
1435 | sib = p->next; | |
949cf20f KS |
1436 | XWINDOW (sib)->top_line = p->top_line; |
1437 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1438 | } |
1439 | ||
1440 | /* Stretch that sibling. */ | |
265a9e55 | 1441 | if (!NILP (par->vchild)) |
7ab12479 | 1442 | set_window_height (sib, |
949cf20f | 1443 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1444 | 1); |
265a9e55 | 1445 | if (!NILP (par->hchild)) |
7ab12479 | 1446 | set_window_width (sib, |
949cf20f | 1447 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1448 | 1); |
1449 | ||
1450 | /* If parent now has only one child, | |
1451 | put the child into the parent's place. */ | |
7ab12479 | 1452 | tem = par->hchild; |
265a9e55 | 1453 | if (NILP (tem)) |
7ab12479 | 1454 | tem = par->vchild; |
5494d7bc | 1455 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1456 | replace_window (parent, tem); |
5494d7bc JD |
1457 | par = XWINDOW (tem); |
1458 | } | |
605be8af JB |
1459 | |
1460 | /* Since we may be deleting combination windows, we must make sure that | |
1461 | not only p but all its children have been marked as deleted. */ | |
1462 | if (! NILP (p->hchild)) | |
1463 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1464 | else if (! NILP (p->vchild)) | |
1465 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1466 | ||
1467 | /* Mark this window as deleted. */ | |
1468 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1469 | |
5494d7bc JD |
1470 | if (! NILP (par->parent)) |
1471 | par = XWINDOW (par->parent); | |
1472 | ||
1473 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1474 | one of them. */ | |
ae12ecd7 | 1475 | |
5494d7bc JD |
1476 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1477 | { | |
1478 | p = XWINDOW (par->vchild); | |
1479 | par->vchild = p->vchild; | |
1480 | tem = p->vchild; | |
1481 | } | |
1482 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1483 | { | |
1484 | p = XWINDOW (par->hchild); | |
1485 | par->hchild = p->hchild; | |
1486 | tem = p->hchild; | |
1487 | } | |
1488 | else | |
1489 | p = 0; | |
1490 | ||
1491 | if (p) | |
1492 | { | |
1493 | while (! NILP (tem)) { | |
1494 | XWINDOW (tem)->parent = p->parent; | |
1495 | if (NILP (XWINDOW (tem)->next)) | |
1496 | break; | |
1497 | tem = XWINDOW (tem)->next; | |
1498 | } | |
1499 | if (! NILP (tem)) { | |
1500 | /* The next of the v/hchild we are removing is now the next of the | |
1501 | last child for the v/hchild: | |
1502 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1503 | | | |
1504 | -> next3 | |
1505 | After: v/hchild -> next1 -> next2 -> next3 | |
1506 | */ | |
1507 | XWINDOW (tem)->next = p->next; | |
1508 | if (! NILP (p->next)) | |
1509 | XWINDOW (p->next)->prev = tem; | |
1510 | } | |
1511 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1512 | } | |
1513 | ||
1514 | ||
5500c422 | 1515 | /* Adjust glyph matrices. */ |
951f9df5 | 1516 | adjust_glyphs (f); |
05e71564 | 1517 | UNBLOCK_INPUT; |
7ab12479 | 1518 | } |
67492200 GM |
1519 | |
1520 | ||
7ab12479 | 1521 | \f |
67492200 GM |
1522 | /*********************************************************************** |
1523 | Window List | |
1524 | ***********************************************************************/ | |
1525 | ||
f95464e4 GM |
1526 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1527 | pointer. This is a callback function for foreach_window, used in | |
1528 | function window_list. */ | |
67492200 GM |
1529 | |
1530 | static int | |
f95464e4 | 1531 | add_window_to_list (w, user_data) |
67492200 | 1532 | struct window *w; |
f95464e4 | 1533 | void *user_data; |
67492200 | 1534 | { |
f95464e4 | 1535 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1536 | Lisp_Object window; |
1537 | XSETWINDOW (window, w); | |
212116d6 | 1538 | *list = Fcons (window, *list); |
67492200 GM |
1539 | return 1; |
1540 | } | |
1541 | ||
1542 | ||
1543 | /* Return a list of all windows, for use by next_window. If | |
1544 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1545 | list, cache it in Vwindow_list, and return that. */ | |
1546 | ||
1547 | static Lisp_Object | |
1548 | window_list () | |
1549 | { | |
1550 | if (!CONSP (Vwindow_list)) | |
1551 | { | |
1552 | Lisp_Object tail; | |
212116d6 | 1553 | |
67492200 GM |
1554 | Vwindow_list = Qnil; |
1555 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1556 | { |
1557 | Lisp_Object args[2]; | |
1558 | ||
1559 | /* We are visiting windows in canonical order, and add | |
1560 | new windows at the front of args[1], which means we | |
1561 | have to reverse this list at the end. */ | |
1562 | args[1] = Qnil; | |
1563 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1564 | args[0] = Vwindow_list; | |
1565 | args[1] = Fnreverse (args[1]); | |
1566 | Vwindow_list = Fnconc (2, args); | |
1567 | } | |
67492200 | 1568 | } |
177c0ea7 | 1569 | |
67492200 GM |
1570 | return Vwindow_list; |
1571 | } | |
1572 | ||
1573 | ||
118ea242 GM |
1574 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1575 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1576 | |
118ea242 GM |
1577 | MINIBUF t means WINDOW may be minibuffer windows. |
1578 | `lambda' means WINDOW may not be a minibuffer window. | |
1579 | a window means a specific minibuffer window | |
67492200 | 1580 | |
118ea242 GM |
1581 | ALL_FRAMES t means search all frames, |
1582 | nil means search just current frame, | |
1583 | `visible' means search just visible frames, | |
1584 | 0 means search visible and iconified frames, | |
1585 | a window means search the frame that window belongs to, | |
1586 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1587 | |
1588 | static int | |
118ea242 GM |
1589 | candidate_window_p (window, owindow, minibuf, all_frames) |
1590 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1591 | { |
1592 | struct window *w = XWINDOW (window); | |
1593 | struct frame *f = XFRAME (w->frame); | |
1594 | int candidate_p = 1; | |
1595 | ||
1596 | if (!BUFFERP (w->buffer)) | |
1597 | candidate_p = 0; | |
1598 | else if (MINI_WINDOW_P (w) | |
1599 | && (EQ (minibuf, Qlambda) | |
1600 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1601 | { | |
1602 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1603 | If it is a window, consider only that one. */ | |
1604 | candidate_p = 0; | |
1605 | } | |
118ea242 GM |
1606 | else if (EQ (all_frames, Qt)) |
1607 | candidate_p = 1; | |
67492200 | 1608 | else if (NILP (all_frames)) |
118ea242 GM |
1609 | { |
1610 | xassert (WINDOWP (owindow)); | |
1611 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1612 | } | |
67492200 GM |
1613 | else if (EQ (all_frames, Qvisible)) |
1614 | { | |
1615 | FRAME_SAMPLE_VISIBILITY (f); | |
1616 | candidate_p = FRAME_VISIBLE_P (f); | |
1617 | } | |
1618 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1619 | { | |
1620 | FRAME_SAMPLE_VISIBILITY (f); | |
1621 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1622 | } | |
67492200 GM |
1623 | else if (WINDOWP (all_frames)) |
1624 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1625 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1626 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1627 | else if (FRAMEP (all_frames)) |
1628 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1629 | |
1630 | return candidate_p; | |
1631 | } | |
1632 | ||
1633 | ||
1634 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1635 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1636 | ALL_FRAMES. */ | |
1637 | ||
1638 | static void | |
1639 | decode_next_window_args (window, minibuf, all_frames) | |
1640 | Lisp_Object *window, *minibuf, *all_frames; | |
1641 | { | |
1642 | if (NILP (*window)) | |
1643 | *window = selected_window; | |
1644 | else | |
b7826503 | 1645 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1646 | |
67492200 GM |
1647 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1648 | does. */ | |
1649 | if (NILP (*minibuf)) | |
1650 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1651 | else if (!EQ (*minibuf, Qt)) | |
1652 | *minibuf = Qlambda; | |
177c0ea7 | 1653 | |
67492200 GM |
1654 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1655 | => count none of them, or a specific minibuffer window (the | |
1656 | active one) to count. */ | |
1657 | ||
1658 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1659 | if (NILP (*all_frames)) | |
1660 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1661 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1662 | : Qnil); | |
1663 | else if (EQ (*all_frames, Qvisible)) | |
1664 | ; | |
0f8fe9a2 | 1665 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1666 | ; |
1667 | else if (FRAMEP (*all_frames)) | |
1668 | ; | |
1669 | else if (!EQ (*all_frames, Qt)) | |
1670 | *all_frames = Qnil; | |
177c0ea7 | 1671 | |
67492200 GM |
1672 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1673 | search just current frame, `visible' meaning search just visible | |
1674 | frames, 0 meaning search visible and iconified frames, or a | |
1675 | window, meaning search the frame that window belongs to, or a | |
1676 | frame, meaning consider windows on that frame, only. */ | |
1677 | } | |
1678 | ||
1679 | ||
1680 | /* Return the next or previous window of WINDOW in canonical ordering | |
1681 | of windows. NEXT_P non-zero means return the next window. See the | |
1682 | documentation string of next-window for the meaning of MINIBUF and | |
1683 | ALL_FRAMES. */ | |
1684 | ||
1685 | static Lisp_Object | |
1686 | next_window (window, minibuf, all_frames, next_p) | |
1687 | Lisp_Object window, minibuf, all_frames; | |
1688 | int next_p; | |
1689 | { | |
1690 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1691 | |
67492200 GM |
1692 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1693 | return the first window on the frame. */ | |
1694 | if (FRAMEP (all_frames) | |
1695 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1696 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1697 | |
212116d6 | 1698 | if (next_p) |
67492200 GM |
1699 | { |
1700 | Lisp_Object list; | |
177c0ea7 | 1701 | |
67492200 GM |
1702 | /* Find WINDOW in the list of all windows. */ |
1703 | list = Fmemq (window, window_list ()); | |
1704 | ||
1705 | /* Scan forward from WINDOW to the end of the window list. */ | |
1706 | if (CONSP (list)) | |
1707 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1708 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1709 | break; |
1710 | ||
1711 | /* Scan from the start of the window list up to WINDOW. */ | |
1712 | if (!CONSP (list)) | |
1713 | for (list = Vwindow_list; | |
1714 | CONSP (list) && !EQ (XCAR (list), window); | |
1715 | list = XCDR (list)) | |
118ea242 | 1716 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1717 | break; |
1718 | ||
1719 | if (CONSP (list)) | |
1720 | window = XCAR (list); | |
1721 | } | |
1722 | else | |
1723 | { | |
1724 | Lisp_Object candidate, list; | |
177c0ea7 | 1725 | |
67492200 GM |
1726 | /* Scan through the list of windows for candidates. If there are |
1727 | candidate windows in front of WINDOW, the last one of these | |
1728 | is the one we want. If there are candidates following WINDOW | |
1729 | in the list, again the last one of these is the one we want. */ | |
1730 | candidate = Qnil; | |
1731 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1732 | { | |
1733 | if (EQ (XCAR (list), window)) | |
1734 | { | |
1735 | if (WINDOWP (candidate)) | |
1736 | break; | |
1737 | } | |
118ea242 GM |
1738 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1739 | all_frames)) | |
67492200 GM |
1740 | candidate = XCAR (list); |
1741 | } | |
1742 | ||
1743 | if (WINDOWP (candidate)) | |
1744 | window = candidate; | |
1745 | } | |
1746 | ||
1747 | return window; | |
1748 | } | |
7ab12479 | 1749 | |
7ab12479 | 1750 | |
26f6279d | 1751 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1752 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1753 | If omitted, WINDOW defaults to the selected window. | |
1754 | ||
1755 | Optional second arg MINIBUF t means count the minibuffer window even | |
1756 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1757 | it is active. MINIBUF neither t nor nil means not to count the | |
1758 | minibuffer even if it is active. | |
1759 | ||
1760 | Several frames may share a single minibuffer; if the minibuffer | |
1761 | counts, all windows on all frames that share that minibuffer count | |
1762 | too. Therefore, `next-window' can be used to iterate through the | |
1763 | set of windows even when the minibuffer is on another frame. If the | |
1764 | minibuffer does not count, only windows from WINDOW's frame count. | |
1765 | ||
1766 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1767 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1768 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1769 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1770 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1771 | Anything else means restrict to WINDOW's frame. | |
1772 | ||
1773 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1774 | `next-window' to iterate through the entire cycle of acceptable | |
1775 | windows, eventually ending up back at the window you started with. | |
1776 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1777 | (window, minibuf, all_frames) | |
67492200 | 1778 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1779 | { |
67492200 | 1780 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1781 | } |
1782 | ||
67492200 | 1783 | |
26f6279d | 1784 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1785 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1786 | If omitted, WINDOW defaults to the selected window. | |
1787 | ||
1788 | Optional second arg MINIBUF t means count the minibuffer window even | |
1789 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1790 | it is active. MINIBUF neither t nor nil means not to count the | |
1791 | minibuffer even if it is active. | |
1792 | ||
1793 | Several frames may share a single minibuffer; if the minibuffer | |
1794 | counts, all windows on all frames that share that minibuffer count | |
1795 | too. Therefore, `previous-window' can be used to iterate through | |
1796 | the set of windows even when the minibuffer is on another frame. If | |
1797 | the minibuffer does not count, only windows from WINDOW's frame count | |
1798 | ||
1799 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1800 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1801 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1802 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1803 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1804 | Anything else means restrict to WINDOW's frame. | |
1805 | ||
1806 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1807 | `previous-window' to iterate through the entire cycle of acceptable | |
1808 | windows, eventually ending up back at the window you started with. | |
1809 | `next-window' traverses the same cycle, in the reverse order. */) | |
1810 | (window, minibuf, all_frames) | |
67492200 | 1811 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1812 | { |
67492200 | 1813 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1814 | } |
1815 | ||
67492200 | 1816 | |
62c07cc7 | 1817 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1818 | doc: /* Select the ARG'th different window on this frame. |
1819 | All windows on current frame are arranged in a cyclic order. | |
1820 | This command selects the window ARG steps away in that order. | |
c2755926 LT |
1821 | A negative ARG moves in the opposite order. The optional second |
1822 | argument ALL_FRAMES has the same meaning as in `next-window', which see. */) | |
fdb82f93 | 1823 | (arg, all_frames) |
67492200 | 1824 | Lisp_Object arg, all_frames; |
7ab12479 | 1825 | { |
67492200 GM |
1826 | Lisp_Object window; |
1827 | int i; | |
7ab12479 | 1828 | |
b7826503 | 1829 | CHECK_NUMBER (arg); |
67492200 | 1830 | window = selected_window; |
177c0ea7 | 1831 | |
67492200 GM |
1832 | for (i = XINT (arg); i > 0; --i) |
1833 | window = Fnext_window (window, Qnil, all_frames); | |
1834 | for (; i < 0; ++i) | |
1835 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1836 | |
14d87dc9 | 1837 | Fselect_window (window, Qnil); |
7ab12479 JB |
1838 | return Qnil; |
1839 | } | |
67492200 GM |
1840 | |
1841 | ||
1842 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1843 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1844 | FRAME nil or omitted means use the selected frame. | |
1845 | WINDOW nil or omitted means use the selected window. | |
1846 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1847 | MINIBUF nil or omitted means include the minibuffer window only | |
1848 | if it's active. | |
1849 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1850 | (frame, minibuf, window) | |
cd2904bd GM |
1851 | Lisp_Object frame, minibuf, window; |
1852 | { | |
cd2904bd GM |
1853 | if (NILP (window)) |
1854 | window = selected_window; | |
1855 | if (NILP (frame)) | |
1856 | frame = selected_frame; | |
1857 | ||
1858 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1859 | error ("Window is on a different frame"); | |
1860 | ||
1861 | return window_list_1 (window, minibuf, frame); | |
1862 | } | |
1863 | ||
1864 | ||
1865 | /* Return a list of windows in canonical ordering. Arguments are like | |
1866 | for `next-window'. */ | |
1867 | ||
1868 | static Lisp_Object | |
1869 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1870 | Lisp_Object window, minibuf, all_frames; |
67492200 | 1871 | { |
403de3b4 | 1872 | Lisp_Object tail, list, rest; |
67492200 GM |
1873 | |
1874 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1875 | list = Qnil; | |
177c0ea7 | 1876 | |
67492200 | 1877 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 1878 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 1879 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 1880 | |
403de3b4 RS |
1881 | /* Rotate the list to start with WINDOW. */ |
1882 | list = Fnreverse (list); | |
1883 | rest = Fmemq (window, list); | |
1884 | if (!NILP (rest) && !EQ (rest, list)) | |
1885 | { | |
1725a7c9 | 1886 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
1887 | ; |
1888 | XSETCDR (tail, Qnil); | |
1889 | list = nconc2 (rest, list); | |
1890 | } | |
1891 | return list; | |
67492200 GM |
1892 | } |
1893 | ||
1894 | ||
7ab12479 JB |
1895 | \f |
1896 | /* Look at all windows, performing an operation specified by TYPE | |
1897 | with argument OBJ. | |
75d8f668 | 1898 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1899 | Qnil, look at just the selected frame; |
89bca612 | 1900 | Qvisible, look at visible frames; |
75d8f668 | 1901 | a frame, just look at windows on that frame. |
85fe3b5e | 1902 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1903 | |
1904 | enum window_loop | |
1905 | { | |
1906 | WINDOW_LOOP_UNUSED, | |
1907 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1908 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1909 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1910 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1911 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 1912 | UNSHOW_BUFFER, /* Arg is buffer */ |
e661376d | 1913 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 1914 | CHECK_ALL_WINDOWS |
7ab12479 JB |
1915 | }; |
1916 | ||
1917 | static Lisp_Object | |
44fa5b1e | 1918 | window_loop (type, obj, mini, frames) |
7ab12479 | 1919 | enum window_loop type; |
118ea242 | 1920 | Lisp_Object obj, frames; |
7ab12479 JB |
1921 | int mini; |
1922 | { | |
118ea242 GM |
1923 | Lisp_Object window, windows, best_window, frame_arg; |
1924 | struct frame *f; | |
ffdc852d | 1925 | struct gcpro gcpro1; |
177c0ea7 | 1926 | |
44fa5b1e JB |
1927 | /* If we're only looping through windows on a particular frame, |
1928 | frame points to that frame. If we're looping through windows | |
1929 | on all frames, frame is 0. */ | |
1930 | if (FRAMEP (frames)) | |
118ea242 | 1931 | f = XFRAME (frames); |
44fa5b1e | 1932 | else if (NILP (frames)) |
118ea242 | 1933 | f = SELECTED_FRAME (); |
7ab12479 | 1934 | else |
118ea242 | 1935 | f = NULL; |
177c0ea7 | 1936 | |
118ea242 | 1937 | if (f) |
89bca612 | 1938 | frame_arg = Qlambda; |
0f8fe9a2 | 1939 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 1940 | frame_arg = frames; |
89bca612 RS |
1941 | else if (EQ (frames, Qvisible)) |
1942 | frame_arg = frames; | |
118ea242 GM |
1943 | else |
1944 | frame_arg = Qt; | |
7ab12479 | 1945 | |
89bca612 RS |
1946 | /* frame_arg is Qlambda to stick to one frame, |
1947 | Qvisible to consider all visible frames, | |
1948 | or Qt otherwise. */ | |
1949 | ||
7ab12479 | 1950 | /* Pick a window to start with. */ |
017b2bad | 1951 | if (WINDOWP (obj)) |
118ea242 GM |
1952 | window = obj; |
1953 | else if (f) | |
1954 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1955 | else |
118ea242 | 1956 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1957 | |
cd2904bd | 1958 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1959 | GCPRO1 (windows); |
7ab12479 | 1960 | best_window = Qnil; |
118ea242 GM |
1961 | |
1962 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1963 | { |
118ea242 | 1964 | struct window *w; |
177c0ea7 | 1965 | |
118ea242 GM |
1966 | window = XCAR (windows); |
1967 | w = XWINDOW (window); | |
177c0ea7 | 1968 | |
118ea242 GM |
1969 | /* Note that we do not pay attention here to whether the frame |
1970 | is visible, since Fwindow_list skips non-visible frames if | |
1971 | that is desired, under the control of frame_arg. */ | |
1972 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1973 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1974 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1975 | || (mini && minibuf_level > 0)) |
1976 | switch (type) | |
1977 | { | |
1978 | case GET_BUFFER_WINDOW: | |
118ea242 | 1979 | if (EQ (w->buffer, obj) |
5c204627 RS |
1980 | /* Don't find any minibuffer window |
1981 | except the one that is currently in use. */ | |
118ea242 GM |
1982 | && (MINI_WINDOW_P (w) |
1983 | ? EQ (window, minibuf_window) | |
1984 | : 1)) | |
1985 | { | |
5ddc1b75 GM |
1986 | if (NILP (best_window)) |
1987 | best_window = window; | |
1988 | else if (EQ (window, selected_window)) | |
1989 | /* For compatibility with 20.x, prefer to return | |
1990 | selected-window. */ | |
1991 | best_window = window; | |
118ea242 | 1992 | } |
7ab12479 JB |
1993 | break; |
1994 | ||
1995 | case GET_LRU_WINDOW: | |
1996 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1997 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1998 | break; |
7ab12479 | 1999 | /* Ignore dedicated windows and minibuffers. */ |
a5731348 | 2000 | if (MINI_WINDOW_P (w) || EQ (w->dedicated, Qt)) |
7ab12479 | 2001 | break; |
265a9e55 | 2002 | if (NILP (best_window) |
7ab12479 | 2003 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2004 | > XFASTINT (w->use_time))) |
2005 | best_window = window; | |
7ab12479 JB |
2006 | break; |
2007 | ||
2008 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2009 | if (!EQ (window, obj)) |
2010 | Fdelete_window (window); | |
7ab12479 JB |
2011 | break; |
2012 | ||
2013 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2014 | if (EQ (w->buffer, obj)) |
7ab12479 | 2015 | { |
118ea242 | 2016 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2017 | |
2018 | /* If this window is dedicated, and in a frame of its own, | |
2019 | kill the frame. */ | |
118ea242 GM |
2020 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2021 | && !NILP (w->dedicated) | |
3548e138 | 2022 | && other_visible_frames (f)) |
7ab12479 | 2023 | { |
3548e138 RS |
2024 | /* Skip the other windows on this frame. |
2025 | There might be one, the minibuffer! */ | |
118ea242 GM |
2026 | while (CONSP (XCDR (windows)) |
2027 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2028 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2029 | windows = XCDR (windows); | |
177c0ea7 | 2030 | |
3548e138 | 2031 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2032 | Fdelete_frame (w->frame, Qnil); |
2033 | } | |
2034 | else if (NILP (w->parent)) | |
2035 | { | |
2036 | /* If we're deleting the buffer displayed in the | |
2037 | only window on the frame, find a new buffer to | |
2038 | display there. */ | |
2039 | Lisp_Object buffer; | |
2040 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2041 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2042 | if (EQ (window, selected_window)) |
2043 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2044 | } |
2045 | else | |
118ea242 | 2046 | Fdelete_window (window); |
7ab12479 JB |
2047 | } |
2048 | break; | |
2049 | ||
2050 | case GET_LARGEST_WINDOW: | |
7ab12479 | 2051 | { |
118ea242 | 2052 | /* Ignore dedicated windows and minibuffers. */ |
a5731348 | 2053 | if (MINI_WINDOW_P (w) || EQ (w->dedicated, Qt)) |
118ea242 | 2054 | break; |
177c0ea7 | 2055 | |
c930dfab | 2056 | if (NILP (best_window)) |
118ea242 | 2057 | best_window = window; |
c930dfab GM |
2058 | else |
2059 | { | |
2060 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2061 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2062 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2063 | best_window = window; |
2064 | } | |
7ab12479 JB |
2065 | } |
2066 | break; | |
2067 | ||
2068 | case UNSHOW_BUFFER: | |
118ea242 | 2069 | if (EQ (w->buffer, obj)) |
7ab12479 | 2070 | { |
118ea242 GM |
2071 | Lisp_Object buffer; |
2072 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2073 | |
7ab12479 | 2074 | /* Find another buffer to show in this window. */ |
118ea242 | 2075 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2076 | |
38ab08d1 RS |
2077 | /* If this window is dedicated, and in a frame of its own, |
2078 | kill the frame. */ | |
118ea242 GM |
2079 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2080 | && !NILP (w->dedicated) | |
38ab08d1 | 2081 | && other_visible_frames (f)) |
45945a7b RS |
2082 | { |
2083 | /* Skip the other windows on this frame. | |
2084 | There might be one, the minibuffer! */ | |
118ea242 GM |
2085 | while (CONSP (XCDR (windows)) |
2086 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2087 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2088 | windows = XCDR (windows); | |
177c0ea7 | 2089 | |
45945a7b | 2090 | /* Now we can safely delete the frame. */ |
118ea242 | 2091 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2092 | } |
a5731348 SM |
2093 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2094 | { | |
2095 | Lisp_Object window; | |
2096 | XSETWINDOW (window, w); | |
2097 | /* If this window is dedicated and not the only window | |
2098 | in its frame, then kill it. */ | |
2099 | Fdelete_window (window); | |
2100 | } | |
38ab08d1 | 2101 | else |
38ab08d1 RS |
2102 | { |
2103 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2104 | w->dedicated = Qnil; |
949cf20f | 2105 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2106 | if (EQ (window, selected_window)) |
2107 | Fset_buffer (w->buffer); | |
38ab08d1 | 2108 | } |
7ab12479 JB |
2109 | } |
2110 | break; | |
3f8ab7bd | 2111 | |
e661376d KS |
2112 | case REDISPLAY_BUFFER_WINDOWS: |
2113 | if (EQ (w->buffer, obj)) | |
2114 | { | |
2115 | mark_window_display_accurate (window, 0); | |
40c6ee74 KS |
2116 | w->update_mode_line = Qt; |
2117 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2118 | ++update_mode_lines; | |
e661376d KS |
2119 | best_window = window; |
2120 | } | |
2121 | break; | |
2122 | ||
3f8ab7bd RS |
2123 | /* Check for a window that has a killed buffer. */ |
2124 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2125 | if (! NILP (w->buffer) |
2126 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2127 | abort (); |
118ea242 | 2128 | break; |
6bbd7a29 GM |
2129 | |
2130 | case WINDOW_LOOP_UNUSED: | |
2131 | break; | |
7ab12479 | 2132 | } |
7ab12479 | 2133 | } |
7ab12479 | 2134 | |
118ea242 | 2135 | UNGCPRO; |
7ab12479 | 2136 | return best_window; |
37962e60 | 2137 | } |
605be8af | 2138 | |
3f8ab7bd RS |
2139 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2140 | ||
233a4a2c | 2141 | void |
3f8ab7bd RS |
2142 | check_all_windows () |
2143 | { | |
2144 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2145 | } | |
2146 | ||
7ab12479 | 2147 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
fdb82f93 | 2148 | doc: /* Return the window least recently selected or used for display. |
a899216f | 2149 | Return a full-width window if possible. |
c2755926 | 2150 | A minibuffer window is never a candidate. |
0c2cb753 RS |
2151 | A dedicated window is never a candidate, so if all windows are dedicated, |
2152 | the value is nil. | |
fdb82f93 PJ |
2153 | If optional argument FRAME is `visible', search all visible frames. |
2154 | If FRAME is 0, search all visible and iconified frames. | |
2155 | If FRAME is t, search all frames. | |
2156 | If FRAME is nil, search only the selected frame. | |
2157 | If FRAME is a frame, search only that frame. */) | |
2158 | (frame) | |
2159 | Lisp_Object frame; | |
7ab12479 JB |
2160 | { |
2161 | register Lisp_Object w; | |
2162 | /* First try for a window that is full-width */ | |
89bca612 | 2163 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 2164 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2165 | return w; |
2166 | /* If none of them, try the rest */ | |
89bca612 | 2167 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
2168 | } |
2169 | ||
2170 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
fdb82f93 | 2171 | doc: /* Return the largest window in area. |
c2755926 | 2172 | A minibuffer window is never a candidate. |
0c2cb753 RS |
2173 | A dedicated window is never a candidate, so if all windows are dedicated, |
2174 | the value is nil. | |
fdb82f93 PJ |
2175 | If optional argument FRAME is `visible', search all visible frames. |
2176 | If FRAME is 0, search all visible and iconified frames. | |
2177 | If FRAME is t, search all frames. | |
2178 | If FRAME is nil, search only the selected frame. | |
2179 | If FRAME is a frame, search only that frame. */) | |
2180 | (frame) | |
2181 | Lisp_Object frame; | |
7ab12479 JB |
2182 | { |
2183 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 2184 | frame); |
7ab12479 JB |
2185 | } |
2186 | ||
2187 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2188 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2189 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2190 | If optional argument FRAME is `visible', search all visible frames. |
2191 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2192 | If FRAME is t, search all frames. | |
2193 | If FRAME is nil, search only the selected frame. | |
2194 | If FRAME is a frame, search only that frame. */) | |
2195 | (buffer, frame) | |
2196 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2197 | { |
2198 | buffer = Fget_buffer (buffer); | |
017b2bad | 2199 | if (BUFFERP (buffer)) |
44fa5b1e | 2200 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2201 | else |
2202 | return Qnil; | |
2203 | } | |
2204 | ||
2205 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2206 | 0, 1, "", |
2207 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2208 | Only the frame WINDOW is on is affected. | |
2209 | This function tries to reduce display jumps | |
2210 | by keeping the text previously visible in WINDOW | |
2211 | in the same place on the frame. Doing this depends on | |
2212 | the value of (window-start WINDOW), so if calling this function | |
2213 | in a program gives strange scrolling, make sure the window-start | |
2214 | value is reasonable when this function is called. */) | |
2215 | (window) | |
7ab12479 JB |
2216 | Lisp_Object window; |
2217 | { | |
2218 | struct window *w; | |
00d3d838 | 2219 | int startpos; |
85fe3b5e | 2220 | int top, new_top; |
7ab12479 | 2221 | |
265a9e55 | 2222 | if (NILP (window)) |
7ab12479 JB |
2223 | window = selected_window; |
2224 | else | |
b7826503 | 2225 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2226 | w = XWINDOW (window); |
a2b38b3c | 2227 | |
00d3d838 | 2228 | startpos = marker_position (w->start); |
949cf20f | 2229 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2230 | |
a2b38b3c RS |
2231 | if (MINI_WINDOW_P (w) && top > 0) |
2232 | error ("Can't expand minibuffer to full frame"); | |
2233 | ||
70728a80 | 2234 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2235 | |
00d3d838 KH |
2236 | /* Try to minimize scrolling, by setting the window start to the point |
2237 | will cause the text at the old window start to be at the same place | |
2238 | on the frame. But don't try to do this if the window start is | |
2239 | outside the visible portion (as might happen when the display is | |
2240 | not current, due to typeahead). */ | |
949cf20f | 2241 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2242 | if (new_top != top |
2243 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2244 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2245 | { | |
2246 | struct position pos; | |
2247 | struct buffer *obuf = current_buffer; | |
2248 | ||
2249 | Fset_buffer (w->buffer); | |
2250 | /* This computation used to temporarily move point, but that can | |
2251 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2252 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2253 | |
b73ea88e | 2254 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2255 | w->window_end_valid = Qnil; |
b73ea88e RS |
2256 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2257 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2258 | : Qnil); |
80622eec RS |
2259 | /* We need to do this, so that the window-scroll-functions |
2260 | get called. */ | |
4d047f50 | 2261 | w->optional_new_start = Qt; |
00d3d838 KH |
2262 | |
2263 | set_buffer_internal (obuf); | |
2264 | } | |
5500c422 | 2265 | |
7ab12479 JB |
2266 | return Qnil; |
2267 | } | |
2268 | ||
2269 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2270 | 1, 2, "bDelete windows on (buffer): ", |
2271 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2272 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2273 | Optional second argument FRAME controls which frames are affected. |
2274 | If optional argument FRAME is `visible', search all visible frames. | |
2275 | If FRAME is 0, search all visible and iconified frames. | |
2276 | If FRAME is nil, search all frames. | |
2277 | If FRAME is t, search only the selected frame. | |
2278 | If FRAME is a frame, search only that frame. */) | |
2279 | (buffer, frame) | |
26f6279d | 2280 | Lisp_Object buffer, frame; |
7ab12479 | 2281 | { |
26f6279d JB |
2282 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2283 | expects. */ | |
c520265e RS |
2284 | if (NILP (frame)) |
2285 | frame = Qt; | |
2286 | else if (EQ (frame, Qt)) | |
2287 | frame = Qnil; | |
26f6279d | 2288 | |
265a9e55 | 2289 | if (!NILP (buffer)) |
7ab12479 JB |
2290 | { |
2291 | buffer = Fget_buffer (buffer); | |
b7826503 | 2292 | CHECK_BUFFER (buffer); |
26f6279d | 2293 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2294 | } |
177c0ea7 | 2295 | |
7ab12479 JB |
2296 | return Qnil; |
2297 | } | |
2298 | ||
2299 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2300 | Sreplace_buffer_in_windows, |
2301 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2302 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2303 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2304 | (buffer) |
7ab12479 JB |
2305 | Lisp_Object buffer; |
2306 | { | |
265a9e55 | 2307 | if (!NILP (buffer)) |
7ab12479 JB |
2308 | { |
2309 | buffer = Fget_buffer (buffer); | |
b7826503 | 2310 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2311 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2312 | } | |
2313 | return Qnil; | |
2314 | } | |
ff58478b RS |
2315 | |
2316 | /* Replace BUFFER with some other buffer in all windows | |
2317 | of all frames, even those on other keyboards. */ | |
2318 | ||
2319 | void | |
2320 | replace_buffer_in_all_windows (buffer) | |
2321 | Lisp_Object buffer; | |
2322 | { | |
27abb84f | 2323 | #ifdef MULTI_KBOARD |
ff58478b RS |
2324 | Lisp_Object tail, frame; |
2325 | ||
ff58478b RS |
2326 | /* A single call to window_loop won't do the job |
2327 | because it only considers frames on the current keyboard. | |
2328 | So loop manually over frames, and handle each one. */ | |
2329 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2330 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2331 | #else |
db7f721d | 2332 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2333 | #endif |
2334 | } | |
7ab12479 JB |
2335 | \f |
2336 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2337 | |
2338 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2339 | might crash Emacs. */ | |
5500c422 | 2340 | |
a481b3ea | 2341 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2342 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2343 | |
2344 | /* Make sure that window_min_height and window_min_width are | |
2345 | not too small; if they are, set them to safe minima. */ | |
2346 | ||
2347 | static void | |
2348 | check_min_window_sizes () | |
2349 | { | |
2350 | /* Smaller values might permit a crash. */ | |
2351 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2352 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2353 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2354 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2355 | } | |
2356 | ||
2357 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2358 | minimum allowable size. */ | |
5500c422 | 2359 | |
605be8af | 2360 | void |
a481b3ea | 2361 | check_frame_size (frame, rows, cols) |
605be8af JB |
2362 | FRAME_PTR frame; |
2363 | int *rows, *cols; | |
a481b3ea | 2364 | { |
628df3bf | 2365 | /* For height, we have to see: |
54b8bcb5 RS |
2366 | how many windows the frame has at minimum (one or two), |
2367 | and whether it has a menu bar or other special stuff at the top. */ | |
2368 | int min_height | |
2369 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2370 | ? MIN_SAFE_WINDOW_HEIGHT | |
2371 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2372 | |
5500c422 GM |
2373 | if (FRAME_TOP_MARGIN (frame) > 0) |
2374 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2375 | |
2376 | if (*rows < min_height) | |
2377 | *rows = min_height; | |
2378 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2379 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2380 | } | |
2381 | ||
c1636aa6 | 2382 | |
233a4a2c GM |
2383 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2384 | check if W's width can be changed, otherwise check W's height. | |
2385 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2386 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2387 | either. */ | |
c1636aa6 | 2388 | |
233a4a2c GM |
2389 | static int |
2390 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2391 | struct window *w; | |
2392 | int width_p, check_siblings_p; | |
2393 | { | |
2394 | int fixed_p; | |
2395 | struct window *c; | |
177c0ea7 | 2396 | |
233a4a2c GM |
2397 | if (!NILP (w->hchild)) |
2398 | { | |
2399 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2400 | |
233a4a2c GM |
2401 | if (width_p) |
2402 | { | |
2403 | /* A horiz. combination is fixed-width if all of if its | |
2404 | children are. */ | |
2405 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2406 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2407 | fixed_p = c == NULL; | |
2408 | } | |
2409 | else | |
2410 | { | |
2411 | /* A horiz. combination is fixed-height if one of if its | |
2412 | children is. */ | |
2413 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2414 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2415 | fixed_p = c != NULL; | |
2416 | } | |
2417 | } | |
2418 | else if (!NILP (w->vchild)) | |
2419 | { | |
2420 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2421 | |
233a4a2c GM |
2422 | if (width_p) |
2423 | { | |
2424 | /* A vert. combination is fixed-width if one of if its | |
2425 | children is. */ | |
2426 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2427 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2428 | fixed_p = c != NULL; | |
2429 | } | |
2430 | else | |
2431 | { | |
2432 | /* A vert. combination is fixed-height if all of if its | |
2433 | children are. */ | |
2434 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2435 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2436 | fixed_p = c == NULL; | |
2437 | } | |
2438 | } | |
2439 | else if (BUFFERP (w->buffer)) | |
2440 | { | |
3df0580e AS |
2441 | struct buffer *old = current_buffer; |
2442 | Lisp_Object val; | |
177c0ea7 | 2443 | |
3df0580e AS |
2444 | current_buffer = XBUFFER (w->buffer); |
2445 | val = find_symbol_value (Qwindow_size_fixed); | |
2446 | current_buffer = old; | |
a34dfd12 | 2447 | |
3df0580e AS |
2448 | fixed_p = 0; |
2449 | if (!EQ (val, Qunbound)) | |
2450 | { | |
2451 | fixed_p = !NILP (val); | |
177c0ea7 | 2452 | |
3df0580e AS |
2453 | if (fixed_p |
2454 | && ((EQ (val, Qheight) && width_p) | |
2455 | || (EQ (val, Qwidth) && !width_p))) | |
2456 | fixed_p = 0; | |
233a4a2c GM |
2457 | } |
2458 | ||
2459 | /* Can't tell if this one is resizable without looking at | |
2460 | siblings. If all siblings are fixed-size this one is too. */ | |
2461 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2462 | { | |
2463 | Lisp_Object child; | |
177c0ea7 | 2464 | |
233a4a2c GM |
2465 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2466 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2467 | break; | |
2468 | ||
2469 | if (NILP (child)) | |
2470 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2471 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2472 | break; | |
2473 | ||
2474 | if (NILP (child)) | |
2475 | fixed_p = 1; | |
2476 | } | |
2477 | } | |
2478 | else | |
2479 | fixed_p = 1; | |
2480 | ||
2481 | return fixed_p; | |
2482 | } | |
177c0ea7 | 2483 | |
233a4a2c GM |
2484 | |
2485 | /* Return the minimum size of window W, not taking fixed-width windows | |
2486 | into account. WIDTH_P non-zero means return the minimum width, | |
2487 | otherwise return the minimum height. If W is a combination window, | |
2488 | compute the minimum size from the minimum sizes of W's children. */ | |
2489 | ||
2490 | static int | |
2491 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2492 | struct window *w; |
2493 | int width_p; | |
2494 | { | |
233a4a2c | 2495 | struct window *c; |
c1636aa6 | 2496 | int size; |
177c0ea7 | 2497 | |
233a4a2c GM |
2498 | if (!NILP (w->hchild)) |
2499 | { | |
2500 | c = XWINDOW (w->hchild); | |
2501 | size = 0; | |
177c0ea7 | 2502 | |
233a4a2c GM |
2503 | if (width_p) |
2504 | { | |
2505 | /* The min width of a horizontal combination is | |
2506 | the sum of the min widths of its children. */ | |
2507 | while (c) | |
2508 | { | |
2509 | size += window_min_size_1 (c, width_p); | |
2510 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2511 | } | |
2512 | } | |
2513 | else | |
2514 | { | |
2515 | /* The min height a horizontal combination equals | |
2516 | the maximum of all min height of its children. */ | |
2517 | while (c) | |
2518 | { | |
2519 | int min_size = window_min_size_1 (c, width_p); | |
2520 | size = max (min_size, size); | |
2521 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2522 | } | |
2523 | } | |
2524 | } | |
2525 | else if (!NILP (w->vchild)) | |
2526 | { | |
2527 | c = XWINDOW (w->vchild); | |
2528 | size = 0; | |
177c0ea7 | 2529 | |
233a4a2c GM |
2530 | if (width_p) |
2531 | { | |
2532 | /* The min width of a vertical combination is | |
2533 | the maximum of the min widths of its children. */ | |
2534 | while (c) | |
2535 | { | |
2536 | int min_size = window_min_size_1 (c, width_p); | |
2537 | size = max (min_size, size); | |
2538 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2539 | } | |
2540 | } | |
2541 | else | |
2542 | { | |
2543 | /* The min height of a vertical combination equals | |
2544 | the sum of the min height of its children. */ | |
2545 | while (c) | |
2546 | { | |
2547 | size += window_min_size_1 (c, width_p); | |
2548 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2549 | } | |
2550 | } | |
2551 | } | |
c1636aa6 GM |
2552 | else |
2553 | { | |
233a4a2c GM |
2554 | if (width_p) |
2555 | size = window_min_width; | |
c1636aa6 | 2556 | else |
233a4a2c GM |
2557 | { |
2558 | if (MINI_WINDOW_P (w) | |
2559 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2560 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2561 | size = 1; |
2562 | else | |
2563 | size = window_min_height; | |
2564 | } | |
c1636aa6 GM |
2565 | } |
2566 | ||
2567 | return size; | |
2568 | } | |
2569 | ||
2570 | ||
233a4a2c GM |
2571 | /* Return the minimum size of window W, taking fixed-size windows into |
2572 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2573 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2574 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2575 | unless FIXED is null. */ | |
7ab12479 | 2576 | |
233a4a2c | 2577 | static int |
f984d4fc | 2578 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2579 | struct window *w; |
f984d4fc | 2580 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2581 | { |
2582 | int size, fixed_p; | |
2583 | ||
f984d4fc GM |
2584 | if (ignore_fixed_p) |
2585 | fixed_p = 0; | |
2586 | else | |
2587 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2588 | |
233a4a2c GM |
2589 | if (fixed) |
2590 | *fixed = fixed_p; | |
177c0ea7 | 2591 | |
233a4a2c | 2592 | if (fixed_p) |
949cf20f | 2593 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2594 | else |
2595 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2596 | |
233a4a2c GM |
2597 | return size; |
2598 | } | |
2599 | ||
2600 | ||
79fd290e | 2601 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2602 | Return 1 if window width is ok after adjustment; 0 if window |
2603 | is still too narrow. */ | |
2604 | ||
2605 | static int | |
2606 | adjust_window_margins (w) | |
2607 | struct window *w; | |
2608 | { | |
2609 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2610 | - WINDOW_FRINGE_COLS (w) | |
2611 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2612 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2613 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2614 | ||
2615 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2616 | return 1; | |
2617 | ||
2618 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2619 | return 0; | |
2620 | ||
2621 | /* Window's text area is too narrow, but reducing the window | |
2622 | margins will fix that. */ | |
2623 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2624 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2625 | { | |
2626 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2627 | w->left_margin_cols = w->right_margin_cols | |
2628 | = make_number (margin_cols/2); | |
2629 | else | |
2630 | w->right_margin_cols = make_number (margin_cols); | |
2631 | } | |
2632 | else | |
2633 | w->left_margin_cols = make_number (margin_cols); | |
2634 | return 1; | |
2635 | } | |
2636 | ||
0aa513ed JD |
2637 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2638 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2639 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2640 | can shrink is SHRINKABLE. | |
2641 | The minimum size a window can have is MIN_SIZE. | |
2642 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2643 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2644 | shrinking rows. | |
2645 | ||
2646 | This function returns an allocated array of new sizes that the caller | |
2647 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2648 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2649 | the second, and so on. | |
2650 | ||
2651 | This function tries to keep windows at least at the minimum size | |
2652 | and resize other windows before it resizes any window to zero (i.e. | |
2653 | delete that window). | |
2654 | ||
2655 | Windows are resized proportional to their size, so bigger windows | |
2656 | shrink more than smaller windows. */ | |
2657 | static int * | |
2658 | shrink_windows (total, size, nchildren, shrinkable, | |
2659 | min_size, resize_fixed_p, forward, width_p) | |
2660 | int total, size, nchildren, shrinkable, min_size; | |
2661 | int resize_fixed_p, width_p; | |
2662 | Lisp_Object forward; | |
2663 | { | |
2664 | int available_resize = 0; | |
2665 | int *new_sizes; | |
2666 | struct window *c; | |
2667 | Lisp_Object child; | |
2668 | int smallest = total; | |
2669 | int total_removed = 0; | |
2670 | int total_shrink = total - size; | |
2671 | int i; | |
2672 | ||
2673 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2674 | ||
2675 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2676 | { | |
2677 | int child_size; | |
2678 | ||
2679 | c = XWINDOW (child); | |
2680 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2681 | ||
2682 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2683 | new_sizes[i] = -1; | |
2684 | else | |
2685 | { | |
2686 | new_sizes[i] = child_size; | |
2687 | if (child_size > min_size) | |
2688 | available_resize += child_size - min_size; | |
2689 | } | |
2690 | } | |
2691 | /* We might need to shrink some windows to zero. Find the smallest | |
2692 | windows and set them to 0 until we can fulfil the new size. */ | |
2693 | ||
2694 | while (shrinkable > 1 && size + available_resize < total) | |
2695 | { | |
2696 | for (i = 0; i < nchildren; ++i) | |
2697 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2698 | smallest = new_sizes[i]; | |
2699 | ||
2700 | for (i = 0; i < nchildren; ++i) | |
2701 | if (new_sizes[i] == smallest) | |
2702 | { | |
2703 | /* Resize this window down to zero. */ | |
2704 | new_sizes[i] = 0; | |
2705 | if (smallest > min_size) | |
2706 | available_resize -= smallest - min_size; | |
2707 | available_resize += smallest; | |
2708 | --shrinkable; | |
2709 | total_removed += smallest; | |
2710 | ||
ef614e04 JD |
2711 | /* We don't know what the smallest is now. */ |
2712 | smallest = total; | |
2713 | ||
0aa513ed JD |
2714 | /* Out of for, just remove one window at the time and |
2715 | check again if we have enough space. */ | |
2716 | break; | |
2717 | } | |
2718 | } | |
2719 | ||
2720 | /* Now, calculate the new sizes. Try to shrink each window | |
2721 | proportional to its size. */ | |
2722 | for (i = 0; i < nchildren; ++i) | |
2723 | { | |
2724 | if (new_sizes[i] > min_size) | |
2725 | { | |
2726 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2727 | if (new_sizes[i] - to_shrink < min_size) | |
2728 | to_shrink = new_sizes[i] - min_size; | |
2729 | new_sizes[i] -= to_shrink; | |
2730 | total_removed += to_shrink; | |
2731 | } | |
2732 | } | |
2733 | ||
2734 | /* Any reminder due to rounding, we just subtract from windows | |
2735 | that are left and still can be shrunk. */ | |
2736 | while (total_shrink > total_removed) | |
2737 | { | |
ef614e04 JD |
2738 | int nonzero_sizes = 0; |
2739 | int nonzero_idx = -1; | |
2740 | ||
2741 | for (i = 0; i < nchildren; ++i) | |
2742 | if (new_sizes[i] > 0) | |
2743 | { | |
2744 | ++nonzero_sizes; | |
2745 | nonzero_idx = i; | |
2746 | } | |
c49a0495 | 2747 | |
0aa513ed JD |
2748 | for (i = 0; i < nchildren; ++i) |
2749 | if (new_sizes[i] > min_size) | |
2750 | { | |
2751 | --new_sizes[i]; | |
2752 | ++total_removed; | |
2753 | ||
2754 | /* Out of for, just shrink one window at the time and | |
2755 | check again if we have enough space. */ | |
2756 | break; | |
2757 | } | |
ef614e04 JD |
2758 | |
2759 | ||
2760 | /* Special case, only one window left. */ | |
2761 | if (nonzero_sizes == 1) | |
2762 | break; | |
2763 | } | |
2764 | ||
2765 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2766 | while (total_shrink < total_removed) | |
2767 | { | |
2768 | for (i = 0; i < nchildren; ++i) | |
2769 | { | |
2770 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2771 | { | |
2772 | ++new_sizes[i]; | |
2773 | --total_removed; | |
2774 | break; | |
2775 | } | |
2776 | } | |
0aa513ed JD |
2777 | } |
2778 | ||
2779 | return new_sizes; | |
2780 | } | |
949cf20f | 2781 | |
233a4a2c GM |
2782 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2783 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2784 | keep their proportionate size relative to WINDOW. Propagate | |
2785 | WINDOW's top or left edge position to children. Delete windows | |
192c3131 RS |
2786 | that become too small unless NODELETE_P is non-zero. |
2787 | ||
2788 | If NODELETE_P is 2, that means we do delete windows that are | |
2789 | too small, even if they were too small before! */ | |
233a4a2c GM |
2790 | |
2791 | static void | |
2792 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2793 | Lisp_Object window; |
233a4a2c | 2794 | int size, width_p, nodelete_p; |
7ab12479 | 2795 | { |
233a4a2c GM |
2796 | struct window *w = XWINDOW (window); |
2797 | struct window *c; | |
2798 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 2799 | int old_size, min_size, safe_min_size; |
7ab12479 | 2800 | |
949cf20f KS |
2801 | /* We test nodelete_p != 2 and nodelete_p != 1 below, so it |
2802 | seems like it's too soon to do this here. ++KFS. */ | |
192c3131 RS |
2803 | if (nodelete_p == 2) |
2804 | nodelete_p = 0; | |
2805 | ||
a481b3ea | 2806 | check_min_window_sizes (); |
7ae2f10f | 2807 | size = max (0, size); |
177c0ea7 | 2808 | |
b5f05b50 GM |
2809 | /* If the window has been "too small" at one point, |
2810 | don't delete it for being "too small" in the future. | |
2811 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2812 | if (width_p) |
2813 | { | |
949cf20f | 2814 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 2815 | min_size = window_min_width; |
949cf20f KS |
2816 | /* Ensure that there is room for the scroll bar and fringes! |
2817 | We may reduce display margins though. */ | |
2818 | safe_min_size = (MIN_SAFE_WINDOW_WIDTH | |
2819 | + WINDOW_FRINGE_COLS (w) | |
2820 | + WINDOW_SCROLL_BAR_COLS (w)); | |
233a4a2c GM |
2821 | } |
2822 | else | |
2823 | { | |
949cf20f | 2824 | old_size = XINT (w->total_lines); |
233a4a2c | 2825 | min_size = window_min_height; |
949cf20f | 2826 | safe_min_size = MIN_SAFE_WINDOW_HEIGHT; |
233a4a2c | 2827 | } |
192c3131 RS |
2828 | |
2829 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
2830 | w->too_small_ok = Qt; |
2831 | ||
233a4a2c | 2832 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 2833 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 2834 | { |
b5f05b50 | 2835 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2836 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
2837 | if (min_size < safe_min_size) |
2838 | min_size = safe_min_size; | |
233a4a2c | 2839 | if (size < min_size) |
c1636aa6 GM |
2840 | { |
2841 | delete_window (window); | |
2842 | return; | |
2843 | } | |
7ab12479 JB |
2844 | } |
2845 | ||
233a4a2c | 2846 | /* Set redisplay hints. */ |
7ae2f10f GM |
2847 | w->last_modified = make_number (0); |
2848 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2849 | windows_or_buffers_changed++; |
7ae2f10f | 2850 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2851 | |
233a4a2c GM |
2852 | if (width_p) |
2853 | { | |
2854 | sideward = &w->vchild; | |
2855 | forward = &w->hchild; | |
949cf20f KS |
2856 | w->total_cols = make_number (size); |
2857 | adjust_window_margins (w); | |
233a4a2c GM |
2858 | } |
2859 | else | |
2860 | { | |
2861 | sideward = &w->hchild; | |
2862 | forward = &w->vchild; | |
949cf20f KS |
2863 | w->total_lines = make_number (size); |
2864 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
2865 | } |
2866 | ||
2867 | if (!NILP (*sideward)) | |
7ab12479 | 2868 | { |
233a4a2c | 2869 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2870 | { |
233a4a2c GM |
2871 | c = XWINDOW (child); |
2872 | if (width_p) | |
949cf20f | 2873 | c->left_col = w->left_col; |
233a4a2c | 2874 | else |
949cf20f | 2875 | c->top_line = w->top_line; |
233a4a2c | 2876 | size_window (child, size, width_p, nodelete_p); |
7ab12479 JB |
2877 | } |
2878 | } | |
233a4a2c | 2879 | else if (!NILP (*forward)) |
7ab12479 | 2880 | { |
233a4a2c GM |
2881 | int fixed_size, each, extra, n; |
2882 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2883 | int last_pos, first_pos, nchildren, total; |
0aa513ed | 2884 | int *new_sizes = NULL; |
233a4a2c GM |
2885 | |
2886 | /* Determine the fixed-size portion of the this window, and the | |
2887 | number of child windows. */ | |
8b6d9dc9 | 2888 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2889 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2890 | { |
8b6d9dc9 | 2891 | int child_size; |
177c0ea7 | 2892 | |
7ab12479 | 2893 | c = XWINDOW (child); |
949cf20f | 2894 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 2895 | total += child_size; |
177c0ea7 | 2896 | |
233a4a2c GM |
2897 | if (window_fixed_size_p (c, width_p, 0)) |
2898 | { | |
8b6d9dc9 | 2899 | fixed_size += child_size; |
233a4a2c GM |
2900 | ++nfixed; |
2901 | } | |
2902 | } | |
7ab12479 | 2903 | |
233a4a2c GM |
2904 | /* If the new size is smaller than fixed_size, or if there |
2905 | aren't any resizable windows, allow resizing fixed-size | |
2906 | windows. */ | |
2907 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2908 | ||
0aa513ed | 2909 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
2910 | value of extra takes care of rounding errors. */ |
2911 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
0aa513ed JD |
2912 | if (size < total && n > 1) |
2913 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
2914 | resize_fixed_p, *forward, width_p); | |
2915 | else | |
2916 | { | |
2917 | each = (size - total) / n; | |
2918 | extra = (size - total) - n * each; | |
2919 | } | |
233a4a2c GM |
2920 | |
2921 | /* Compute new children heights and edge positions. */ | |
949cf20f | 2922 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 2923 | last_pos = first_pos; |
0aa513ed | 2924 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
2925 | { |
2926 | int new_size, old_size; | |
177c0ea7 | 2927 | |
233a4a2c | 2928 | c = XWINDOW (child); |
949cf20f | 2929 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 2930 | new_size = old_size; |
7ab12479 | 2931 | |
233a4a2c GM |
2932 | /* The top or left edge position of this child equals the |
2933 | bottom or right edge of its predecessor. */ | |
2934 | if (width_p) | |
949cf20f | 2935 | c->left_col = make_number (last_pos); |
233a4a2c | 2936 | else |
949cf20f | 2937 | c->top_line = make_number (last_pos); |
7ab12479 | 2938 | |
233a4a2c GM |
2939 | /* If this child can be resized, do it. */ |
2940 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2941 | { | |
0aa513ed | 2942 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
2943 | extra = 0; |
2944 | } | |
177c0ea7 | 2945 | |
233a4a2c GM |
2946 | /* Set new height. Note that size_window also propagates |
2947 | edge positions to children, so it's not a no-op if we | |
2948 | didn't change the child's size. */ | |
2949 | size_window (child, new_size, width_p, 1); | |
2950 | ||
2951 | /* Remember the bottom/right edge position of this child; it | |
2952 | will be used to set the top/left edge of the next child. */ | |
0aa513ed | 2953 | last_pos += new_size; |
7ab12479 | 2954 | } |
233a4a2c | 2955 | |
0aa513ed JD |
2956 | if (new_sizes) xfree (new_sizes); |
2957 | ||
233a4a2c GM |
2958 | /* We should have covered the parent exactly with child windows. */ |
2959 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 2960 | |
7ab12479 | 2961 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2962 | if (!nodelete_p) |
2963 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2964 | { |
233a4a2c GM |
2965 | int child_size; |
2966 | c = XWINDOW (child); | |
949cf20f | 2967 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
192c3131 | 2968 | size_window (child, child_size, width_p, 2); |
7ab12479 JB |
2969 | } |
2970 | } | |
2971 | } | |
2972 | ||
233a4a2c GM |
2973 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2974 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2975 | that become too small in the process. (The caller should check | |
2976 | later and do so if appropriate.) */ | |
7ab12479 | 2977 | |
5e14b1fc | 2978 | void |
233a4a2c | 2979 | set_window_height (window, height, nodelete) |
7ab12479 | 2980 | Lisp_Object window; |
233a4a2c | 2981 | int height; |
7ab12479 JB |
2982 | int nodelete; |
2983 | { | |
233a4a2c GM |
2984 | size_window (window, height, 0, nodelete); |
2985 | } | |
7ab12479 | 2986 | |
7ab12479 | 2987 | |
233a4a2c GM |
2988 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2989 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2990 | that become too small in the process. (The caller should check | |
2991 | later and do so if appropriate.) */ | |
7ab12479 | 2992 | |
233a4a2c GM |
2993 | void |
2994 | set_window_width (window, width, nodelete) | |
2995 | Lisp_Object window; | |
2996 | int width; | |
2997 | int nodelete; | |
2998 | { | |
2999 | size_window (window, width, 1, nodelete); | |
7ab12479 | 3000 | } |
233a4a2c | 3001 | |
cdbc7fec KS |
3002 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3003 | ||
3004 | void | |
3005 | change_window_heights (window, n) | |
3006 | Lisp_Object window; | |
3007 | int n; | |
3008 | { | |
3009 | struct window *w = XWINDOW (window); | |
3010 | ||
949cf20f KS |
3011 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3012 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3013 | |
949cf20f KS |
3014 | if (INTEGERP (w->orig_top_line)) |
3015 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3016 | if (INTEGERP (w->orig_total_lines)) | |
3017 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3018 | |
3019 | /* Handle just the top child in a vertical split. */ | |
3020 | if (!NILP (w->vchild)) | |
3021 | change_window_heights (w->vchild, n); | |
3022 | ||
3023 | /* Adjust all children in a horizontal split. */ | |
3024 | for (window = w->hchild; !NILP (window); window = w->next) | |
3025 | { | |
3026 | w = XWINDOW (window); | |
3027 | change_window_heights (window, n); | |
3028 | } | |
3029 | } | |
3030 | ||
7ab12479 | 3031 | \f |
1d8d96fa | 3032 | int window_select_count; |
7ab12479 | 3033 | |
5b03d3c0 RS |
3034 | Lisp_Object |
3035 | Fset_window_buffer_unwind (obuf) | |
3036 | Lisp_Object obuf; | |
3037 | { | |
3038 | Fset_buffer (obuf); | |
3039 | return Qnil; | |
3040 | } | |
3041 | ||
56613f06 SM |
3042 | EXFUN (Fset_window_fringes, 4); |
3043 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3044 | |
5500c422 GM |
3045 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3046 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3047 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3048 | margins, fringes, and scroll-bar settings of the window are not | |
3049 | reset from the buffer's local settings. */ | |
7ab12479 | 3050 | |
5500c422 | 3051 | void |
949cf20f | 3052 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3053 | Lisp_Object window, buffer; |
949cf20f | 3054 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3055 | { |
3056 | struct window *w = XWINDOW (window); | |
3057 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3058 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3059 | |
3060 | w->buffer = buffer; | |
86e48436 RS |
3061 | |
3062 | if (EQ (window, selected_window)) | |
5500c422 | 3063 | b->last_selected_window = window; |
beb4e312 | 3064 | |
c49a0495 KS |
3065 | /* Let redisplay errors through. */ |
3066 | b->display_error_modiff = 0; | |
3067 | ||
beb4e312 | 3068 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3069 | if (INTEGERP (b->display_count)) |
3070 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3071 | b->display_time = Fcurrent_time (); | |
86e48436 | 3072 | |
d834a2e9 | 3073 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3074 | XSETFASTINT (w->window_end_vpos, 0); |
3075 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3076 | w->window_end_valid = Qnil; |
1c686c99 | 3077 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3078 | w->vscroll = 0; |
5500c422 | 3079 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3080 | set_marker_restricted (w->start, |
5500c422 | 3081 | make_number (b->last_window_start), |
7ab12479 JB |
3082 | buffer); |
3083 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3084 | w->force_start = Qnil; |
d834a2e9 | 3085 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3086 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3087 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3088 | |
3089 | /* We must select BUFFER for running the window-scroll-functions. | |
3090 | If WINDOW is selected, switch permanently. | |
3091 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3092 | if (EQ (window, selected_window)) |
3093 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3094 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3095 | because that might itself be a local variable. */ | |
3096 | else if (window_initialized) | |
3097 | { | |
3098 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3099 | Fset_buffer (buffer); | |
3100 | } | |
3101 | ||
949cf20f KS |
3102 | if (!keep_margins_p) |
3103 | { | |
3104 | /* Set left and right marginal area width etc. from buffer. */ | |
3105 | ||
79fd290e | 3106 | /* This may call adjust_window_margins three times, so |
949cf20f | 3107 | temporarily disable window margins. */ |
3834380d KS |
3108 | Lisp_Object save_left = w->left_margin_cols; |
3109 | Lisp_Object save_right = w->right_margin_cols; | |
3110 | ||
949cf20f KS |
3111 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3112 | ||
3113 | Fset_window_fringes (window, | |
3114 | b->left_fringe_width, b->right_fringe_width, | |
3115 | b->fringes_outside_margins); | |
3116 | ||
3117 | Fset_window_scroll_bars (window, | |
3118 | b->scroll_bar_width, | |
3119 | b->vertical_scroll_bar_type, Qnil); | |
3120 | ||
3834380d KS |
3121 | w->left_margin_cols = save_left; |
3122 | w->right_margin_cols = save_right; | |
3123 | ||
949cf20f KS |
3124 | Fset_window_margins (window, |
3125 | b->left_margin_cols, b->right_margin_cols); | |
3126 | } | |
7ab12479 | 3127 | |
5500c422 GM |
3128 | if (run_hooks_p) |
3129 | { | |
3130 | if (! NILP (Vwindow_scroll_functions)) | |
3131 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3132 | Fmarker_position (w->start)); | |
3133 | ||
3134 | if (! NILP (Vwindow_configuration_change_hook) | |
3135 | && ! NILP (Vrun_hooks)) | |
3136 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3137 | } | |
543f5fb1 | 3138 | |
5b03d3c0 | 3139 | unbind_to (count, Qnil); |
5500c422 | 3140 | } |
5b03d3c0 | 3141 | |
5500c422 | 3142 | |
949cf20f | 3143 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3144 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3145 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3146 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3147 | display margins, fringe widths, and scroll bar settings are maintained; |
3148 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3149 | defaults. |
3150 | ||
3151 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3152 | (window, buffer, keep_margins) |
56613f06 | 3153 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3154 | { |
3155 | register Lisp_Object tem; | |
3156 | register struct window *w = decode_window (window); | |
5500c422 | 3157 | |
bed0c171 | 3158 | XSETWINDOW (window, w); |
5500c422 | 3159 | buffer = Fget_buffer (buffer); |
b7826503 | 3160 | CHECK_BUFFER (buffer); |
5500c422 GM |
3161 | |
3162 | if (NILP (XBUFFER (buffer)->name)) | |
3163 | error ("Attempt to display deleted buffer"); | |
3164 | ||
3165 | tem = w->buffer; | |
3166 | if (NILP (tem)) | |
3167 | error ("Window is deleted"); | |
3168 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3169 | is first being set up. */ | |
3170 | { | |
3171 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3172 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3173 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3174 | |
3175 | unshow_buffer (w); | |
3176 | } | |
3177 | ||
949cf20f | 3178 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3179 | return Qnil; |
3180 | } | |
3181 | ||
2d0834cc SM |
3182 | /* Note that selected_window can be nil |
3183 | when this is called from Fset_window_configuration. */ | |
3184 | ||
14d87dc9 | 3185 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3186 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3187 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3188 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3189 | Optional second arg NORECORD non-nil means |
3190 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3191 | |
fdb82f93 PJ |
3192 | Note that the main editor command loop |
3193 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3194 | (window, norecord) |
3195 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3196 | { |
3197 | register struct window *w; | |
719eaeb1 | 3198 | register struct window *ow; |
1ae1a37d | 3199 | struct frame *sf; |
7ab12479 | 3200 | |
b7826503 | 3201 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3202 | |
3203 | w = XWINDOW (window); | |
50e88778 | 3204 | w->frozen_window_start_p = 0; |
7ab12479 | 3205 | |
2a1893f4 SM |
3206 | ++window_select_count; |
3207 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3208 | if (EQ (window, selected_window)) |
3209 | return window; | |
3210 | ||
a46c0153 RS |
3211 | /* Store the current buffer's actual point into the |
3212 | old selected window. It belongs to that window, | |
3213 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3214 | if (!NILP (selected_window)) |
3215 | { | |
3216 | ow = XWINDOW (selected_window); | |
3217 | if (! NILP (ow->buffer)) | |
3218 | set_marker_both (ow->pointm, ow->buffer, | |
3219 | BUF_PT (XBUFFER (ow->buffer)), | |
3220 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3221 | } | |
7ab12479 JB |
3222 | |
3223 | selected_window = window; | |
1ae1a37d | 3224 | sf = SELECTED_FRAME (); |
d1755117 RS |
3225 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
3226 | { | |
3227 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3228 | /* Use this rather than Fhandle_switch_frame | |
3229 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3230 | move around in the state where a minibuffer in a separate | |
3231 | frame is active. */ | |
c869384d | 3232 | Fselect_frame (WINDOW_FRAME (w)); |
d1755117 RS |
3233 | } |
3234 | else | |
1ae1a37d | 3235 | sf->selected_window = window; |
7ab12479 | 3236 | |
14d87dc9 | 3237 | if (NILP (norecord)) |
b7354ddf | 3238 | record_buffer (w->buffer); |
7ab12479 JB |
3239 | Fset_buffer (w->buffer); |
3240 | ||
86e48436 RS |
3241 | XBUFFER (w->buffer)->last_selected_window = window; |
3242 | ||
7ab12479 JB |
3243 | /* Go to the point recorded in the window. |
3244 | This is important when the buffer is in more | |
3245 | than one window. It also matters when | |
3246 | redisplay_window has altered point after scrolling, | |
3247 | because it makes the change only in the window. */ | |
3248 | { | |
3249 | register int new_point = marker_position (w->pointm); | |
3250 | if (new_point < BEGV) | |
3251 | SET_PT (BEGV); | |
a9c95e08 | 3252 | else if (new_point > ZV) |
7ab12479 JB |
3253 | SET_PT (ZV); |
3254 | else | |
3255 | SET_PT (new_point); | |
3256 | } | |
3257 | ||
3258 | windows_or_buffers_changed++; | |
3259 | return window; | |
3260 | } | |
14d87dc9 SM |
3261 | |
3262 | static Lisp_Object | |
3263 | select_window_norecord (window) | |
3264 | Lisp_Object window; | |
3265 | { | |
3266 | return Fselect_window (window, Qt); | |
3267 | } | |
b7354ddf | 3268 | \f |
441a127e RS |
3269 | /* Deiconify the frame containing the window WINDOW, |
3270 | unless it is the selected frame; | |
3271 | then return WINDOW. | |
3272 | ||
3273 | The reason for the exception for the selected frame | |
3274 | is that it seems better not to change the selected frames visibility | |
3275 | merely because of displaying a different buffer in it. | |
3276 | The deiconification is useful when a buffer gets shown in | |
3277 | another frame that you were not using lately. */ | |
d07f802a RS |
3278 | |
3279 | static Lisp_Object | |
3280 | display_buffer_1 (window) | |
3281 | Lisp_Object window; | |
3282 | { | |
1ae1a37d GM |
3283 | Lisp_Object frame = XWINDOW (window)->frame; |
3284 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3285 | |
d07f802a | 3286 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3287 | |
2d0834cc SM |
3288 | if (EQ (frame, selected_frame)) |
3289 | ; /* Assume the selected frame is already visible enough. */ | |
3290 | else if (minibuf_level > 0 | |
3291 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3292 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3293 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3294 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3295 | else | |
60117126 RS |
3296 | { |
3297 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3298 | Fmake_frame_visible (frame); |
37962e60 | 3299 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3300 | Fraise_frame (frame); |
60117126 | 3301 | } |
177c0ea7 | 3302 | |
d07f802a RS |
3303 | return window; |
3304 | } | |
3305 | ||
4628f7a4 | 3306 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3307 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3308 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3309 | special frame for that buffer using the default frame parameters. | |
3310 | ||
3311 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3312 | to make a frame for that buffer. |
3313 | The variables `special-display-buffer-names' | |
3314 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3315 | (buffer_name) |
4628f7a4 EN |
3316 | Lisp_Object buffer_name; |
3317 | { | |
3318 | Lisp_Object tem; | |
3319 | ||
b7826503 | 3320 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3321 | |
3322 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3323 | if (!NILP (tem)) | |
3324 | return Qt; | |
3325 | ||
3326 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3327 | if (!NILP (tem)) | |
3328 | return XCDR (tem); | |
3329 | ||
3330 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3331 | { | |
3332 | Lisp_Object car = XCAR (tem); | |
3333 | if (STRINGP (car) | |
3334 | && fast_string_match (car, buffer_name) >= 0) | |
3335 | return Qt; | |
3336 | else if (CONSP (car) | |
3337 | && STRINGP (XCAR (car)) | |
3338 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3339 | return XCDR (car); |
4628f7a4 EN |
3340 | } |
3341 | return Qnil; | |
177c0ea7 | 3342 | } |
4628f7a4 EN |
3343 | |
3344 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3345 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3346 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3347 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3348 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3349 | (buffer_name) | |
4628f7a4 EN |
3350 | Lisp_Object buffer_name; |
3351 | { | |
3352 | Lisp_Object tem; | |
3353 | ||
b7826503 | 3354 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3355 | |
3356 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3357 | if (!NILP (tem)) | |
3358 | return Qt; | |
3359 | ||
3360 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3361 | if (!NILP (tem)) | |
3362 | return Qt; | |
3363 | ||
3364 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3365 | { | |
3366 | Lisp_Object car = XCAR (tem); | |
3367 | if (STRINGP (car) | |
3368 | && fast_string_match (car, buffer_name) >= 0) | |
3369 | return Qt; | |
3370 | else if (CONSP (car) | |
3371 | && STRINGP (XCAR (car)) | |
3372 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3373 | return Qt; | |
3374 | } | |
3375 | return Qnil; | |
3376 | } | |
3377 | ||
fdb82f93 | 3378 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3379 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3380 | "BDisplay buffer: \nP", |
3381 | doc: /* Make BUFFER appear in some window but don't select it. | |
c2755926 LT |
3382 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
3383 | a buffer. | |
fdb82f93 PJ |
3384 | If BUFFER is shown already in some window, just use that one, |
3385 | unless the window is the selected window and the optional second | |
3386 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3387 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3388 | Returns the window displaying BUFFER. | |
079d288f | 3389 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3390 | displaying BUFFER, then simply raise that frame. |
3391 | ||
9a7e95f3 RS |
3392 | The variables `special-display-buffer-names', |
3393 | `special-display-regexps', `same-window-buffer-names', and | |
3394 | `same-window-regexps' customize how certain buffer names are handled. | |
3395 | The latter two take effect only if NOT-THIS-WINDOW is t. | |
fdb82f93 PJ |
3396 | |
3397 | If optional argument FRAME is `visible', search all visible frames. | |
3398 | If FRAME is 0, search all visible and iconified frames. | |
3399 | If FRAME is t, search all frames. | |
3400 | If FRAME is a frame, search only that frame. | |
3401 | If FRAME is nil, search only the selected frame | |
3402 | (actually the last nonminibuffer frame), | |
3403 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3404 | which means search visible and iconified frames. | |
3405 | ||
876e2665 GM |
3406 | If a full-width window on a splittable frame is available to display |
3407 | the buffer, it may be split, subject to the value of the variable | |
3408 | `split-height-threshold'. | |
3409 | ||
fdb82f93 PJ |
3410 | If `even-window-heights' is non-nil, window heights will be evened out |
3411 | if displaying the buffer causes two vertically adjacent windows to be | |
3412 | displayed. */) | |
3413 | (buffer, not_this_window, frame) | |
53f76081 | 3414 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3415 | { |
aee631c2 | 3416 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3417 | struct frame *f; |
7ab12479 | 3418 | |
aee631c2 | 3419 | swp = Qnil; |
7ab12479 | 3420 | buffer = Fget_buffer (buffer); |
b7826503 | 3421 | CHECK_BUFFER (buffer); |
7ab12479 | 3422 | |
265a9e55 | 3423 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3424 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3425 | ||
265a9e55 | 3426 | if (NILP (not_this_window) |
7ab12479 | 3427 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3428 | return display_buffer_1 (selected_window); |
7ab12479 | 3429 | |
855d8627 RS |
3430 | /* See if the user has specified this buffer should appear |
3431 | in the selected window. */ | |
3432 | if (NILP (not_this_window)) | |
3433 | { | |
aee631c2 RS |
3434 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3435 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3436 | { |
3437 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3438 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3439 | } |
855d8627 RS |
3440 | } |
3441 | ||
079d288f | 3442 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3443 | look for a window showing BUFFER on any visible or iconified frame. |
3444 | Otherwise search only the current frame. */ | |
53f76081 RS |
3445 | if (! NILP (frame)) |
3446 | tem = frame; | |
9c3da604 GM |
3447 | else if (pop_up_frames |
3448 | || display_buffer_reuse_frames | |
3449 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3450 | XSETFASTINT (tem, 0); |
3451 | else | |
73dc5198 | 3452 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3453 | |
73dc5198 | 3454 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3455 | if (!NILP (window) |
3456 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3457 | return display_buffer_1 (window); |
7ab12479 | 3458 | |
a90712c2 | 3459 | /* Certain buffer names get special handling. */ |
aee631c2 | 3460 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3461 | { |
4628f7a4 EN |
3462 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3463 | if (EQ (tem, Qt)) | |
a90712c2 | 3464 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3465 | if (CONSP (tem)) |
3466 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3467 | } |
3468 | ||
44fa5b1e JB |
3469 | /* If there are no frames open that have more than a minibuffer, |
3470 | we need to create a new frame. */ | |
3471 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3472 | { |
a90712c2 | 3473 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3474 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3475 | return display_buffer_1 (window); |
7ab12479 | 3476 | } |
7ab12479 | 3477 | |
1ae1a37d | 3478 | f = SELECTED_FRAME (); |
43bad991 | 3479 | if (pop_up_windows |
1ae1a37d | 3480 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3481 | /* If the current frame is a special display frame, |
3482 | don't try to reuse its windows. */ | |
1ae1a37d | 3483 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3484 | { |
12cae7c0 KH |
3485 | Lisp_Object frames; |
3486 | ||
37962e60 | 3487 | frames = Qnil; |
1ae1a37d | 3488 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3489 | XSETFRAME (frames, last_nonminibuf_frame); |
a5731348 | 3490 | /* Don't try to create a window if we would get an error. */ |
7ab12479 JB |
3491 | if (split_height_threshold < window_min_height << 1) |
3492 | split_height_threshold = window_min_height << 1; | |
3493 | ||
cee67da9 RS |
3494 | /* Note that both Fget_largest_window and Fget_lru_window |
3495 | ignore minibuffers and dedicated windows. | |
3496 | This means they can return nil. */ | |
7ab12479 | 3497 | |
cee67da9 RS |
3498 | /* If the frame we would try to split cannot be split, |
3499 | try other frames. */ | |
1ae1a37d | 3500 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3501 | { |
3502 | /* Try visible frames first. */ | |
3503 | window = Fget_largest_window (Qvisible); | |
3504 | /* If that didn't work, try iconified frames. */ | |
3505 | if (NILP (window)) | |
3506 | window = Fget_largest_window (make_number (0)); | |
3507 | if (NILP (window)) | |
3508 | window = Fget_largest_window (Qt); | |
3509 | } | |
3510 | else | |
3511 | window = Fget_largest_window (frames); | |
3512 | ||
92cca945 RS |
3513 | /* If we got a tall enough full-width window that can be split, |
3514 | split it. */ | |
265a9e55 | 3515 | if (!NILP (window) |
92cca945 | 3516 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3517 | && window_height (window) >= split_height_threshold |
111e5992 | 3518 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3519 | window = Fsplit_window (window, Qnil, Qnil); |
3520 | else | |
3521 | { | |
1942f68f RS |
3522 | Lisp_Object upper, lower, other; |
3523 | ||
44fa5b1e | 3524 | window = Fget_lru_window (frames); |
92cca945 RS |
3525 | /* If the LRU window is selected, and big enough, |
3526 | and can be split, split it. */ | |
cee67da9 | 3527 | if (!NILP (window) |
92cca945 | 3528 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3529 | && (EQ (window, selected_window) |
3530 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3531 | && window_height (window) >= window_min_height << 1) |
3532 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3533 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3534 | |
cee67da9 | 3535 | /* Try visible frames first. */ |
48d9379d RS |
3536 | if (NILP (window)) |
3537 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3538 | if (NILP (window)) |
3539 | window = Fget_largest_window (Qvisible); | |
3540 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3541 | if (NILP (window)) |
3542 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3543 | if (NILP (window)) |
3544 | window = Fget_largest_window (make_number (0)); | |
3545 | /* Try invisible frames. */ | |
48d9379d RS |
3546 | if (NILP (window)) |
3547 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3548 | if (NILP (window)) |
3549 | window = Fget_largest_window (Qt); | |
3550 | /* As a last resort, make a new frame. */ | |
3551 | if (NILP (window)) | |
3552 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3553 | /* If window appears above or below another, |
3554 | even out their heights. */ | |
cac66e4f | 3555 | other = upper = lower = Qnil; |
1942f68f RS |
3556 | if (!NILP (XWINDOW (window)->prev)) |
3557 | other = upper = XWINDOW (window)->prev, lower = window; | |
3558 | if (!NILP (XWINDOW (window)->next)) | |
3559 | other = lower = XWINDOW (window)->next, upper = window; | |
3560 | if (!NILP (other) | |
6529ed87 | 3561 | && !NILP (Veven_window_heights) |
1942f68f | 3562 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3563 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3564 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3565 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3566 | { |
949cf20f KS |
3567 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3568 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3569 | enlarge_window (upper, |
949cf20f | 3570 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
f95284d2 | 3571 | 0, 0); |
1942f68f | 3572 | } |
7ab12479 JB |
3573 | } |
3574 | } | |
3575 | else | |
3576 | window = Fget_lru_window (Qnil); | |
3577 | ||
949cf20f | 3578 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3579 | return display_buffer_1 (window); |
7ab12479 JB |
3580 | } |
3581 | ||
e661376d KS |
3582 | |
3583 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3584 | 0, 1, 0, | |
3585 | doc: /* Force redisplay of all windows. | |
3586 | If optional arg OBJECT is a window, force redisplay of that window only. | |
0cc1039f | 3587 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
e661376d KS |
3588 | displaying that buffer. */) |
3589 | (object) | |
3590 | Lisp_Object object; | |
3591 | { | |
3592 | if (NILP (object)) | |
3593 | { | |
3594 | windows_or_buffers_changed++; | |
40c6ee74 | 3595 | update_mode_lines++; |
e661376d KS |
3596 | return Qt; |
3597 | } | |
3598 | ||
3599 | if (WINDOWP (object)) | |
3600 | { | |
40c6ee74 | 3601 | struct window *w = XWINDOW (object); |
e661376d | 3602 | mark_window_display_accurate (object, 0); |
40c6ee74 KS |
3603 | w->update_mode_line = Qt; |
3604 | if (BUFFERP (w->buffer)) | |
3605 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3606 | ++update_mode_lines; | |
e661376d KS |
3607 | return Qt; |
3608 | } | |
0cc1039f | 3609 | |
e661376d KS |
3610 | if (STRINGP (object)) |
3611 | object = Fget_buffer (object); | |
3612 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3613 | { | |
3614 | /* Walk all windows looking for buffer, and force update | |
3615 | of each of those windows. */ | |
3616 | ||
3617 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3618 | return NILP (object) ? Qnil : Qt; | |
3619 | } | |
3620 | ||
3621 | /* If nothing suitable was found, just return. | |
3622 | We could signal an error, but this feature will typically be used | |
3623 | asynchronously in timers or process sentinels, so we don't. */ | |
3624 | return Qnil; | |
3625 | } | |
3626 | ||
3627 | ||
7ab12479 JB |
3628 | void |
3629 | temp_output_buffer_show (buf) | |
3630 | register Lisp_Object buf; | |
3631 | { | |
3632 | register struct buffer *old = current_buffer; | |
3633 | register Lisp_Object window; | |
3634 | register struct window *w; | |
3635 | ||
bccd3dd1 RS |
3636 | XBUFFER (buf)->directory = current_buffer->directory; |
3637 | ||
7ab12479 | 3638 | Fset_buffer (buf); |
c6367666 | 3639 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3640 | BEGV = BEG; |
3641 | ZV = Z; | |
3642 | SET_PT (BEG); | |
06be4f85 | 3643 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3644 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3645 | #endif |
7ab12479 JB |
3646 | set_buffer_internal (old); |
3647 | ||
3648 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3649 | call1 (Vtemp_buffer_show_function, buf); | |
3650 | else | |
3651 | { | |
53f76081 | 3652 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3653 | |
1ae1a37d | 3654 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3655 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3656 | Vminibuf_scroll_window = window; |
3657 | w = XWINDOW (window); | |
d834a2e9 | 3658 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3659 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3660 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3661 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3662 | |
beb4e312 | 3663 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3664 | and its buffer current. */ |
2d0834cc SM |
3665 | |
3666 | if (!NILP (Vrun_hooks) | |
3667 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3668 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3669 | { |
2d0834cc SM |
3670 | int count = SPECPDL_INDEX (); |
3671 | Lisp_Object prev_window, prev_buffer; | |
3672 | prev_window = selected_window; | |
3673 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3674 | |
2d0834cc SM |
3675 | /* Select the window that was chosen, for running the hook. |
3676 | Note: Both Fselect_window and select_window_norecord may | |
3677 | set-buffer to the buffer displayed in the window, | |
3678 | so we need to save the current buffer. --stef */ | |
3679 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3680 | record_unwind_protect (select_window_norecord, prev_window); | |
3681 | Fselect_window (window, Qt); | |
3682 | Fset_buffer (w->buffer); | |
3683 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3684 | unbind_to (count, Qnil); | |
2cccc823 RS |
3685 | } |
3686 | } | |
7ab12479 JB |
3687 | } |
3688 | \f | |
dfcf069d | 3689 | static void |
7ab12479 JB |
3690 | make_dummy_parent (window) |
3691 | Lisp_Object window; | |
3692 | { | |
cffec418 | 3693 | Lisp_Object new; |
7ab12479 | 3694 | register struct window *o, *p; |
cffec418 | 3695 | int i; |
7ab12479 | 3696 | |
cffec418 | 3697 | o = XWINDOW (window); |
26605be9 | 3698 | p = allocate_window (); |
cffec418 | 3699 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3700 | ((struct Lisp_Vector *) p)->contents[i] |
3701 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3702 | XSETWINDOW (new, p); |
7ab12479 | 3703 | |
2a1893f4 SM |
3704 | ++sequence_number; |
3705 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3706 | |
3707 | /* Put new into window structure in place of window */ | |
3708 | replace_window (window, new); | |
3709 | ||
3710 | o->next = Qnil; | |
3711 | o->prev = Qnil; | |
3712 | o->vchild = Qnil; | |
3713 | o->hchild = Qnil; | |
3714 | o->parent = new; | |
3715 | ||
3716 | p->start = Qnil; | |
3717 | p->pointm = Qnil; | |
3718 | p->buffer = Qnil; | |
3719 | } | |
3720 | ||
3721 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3722 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3723 | WINDOW defaults to selected one and SIZE to half its size. | |
3724 | If optional third arg HORFLAG is non-nil, split side by side | |
3725 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 3726 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
3727 | Interactively, all arguments are nil. |
3728 | ||
3729 | Returns the newly created window (which is the lower or rightmost one). | |
3730 | The upper or leftmost window is the original one and remains selected. | |
3731 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) | |
fdb82f93 | 3732 | (window, size, horflag) |
77ae0fe3 | 3733 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3734 | { |
3735 | register Lisp_Object new; | |
3736 | register struct window *o, *p; | |
c0807608 | 3737 | FRAME_PTR fo; |
77ae0fe3 | 3738 | register int size_int; |
7ab12479 | 3739 | |
265a9e55 | 3740 | if (NILP (window)) |
7ab12479 JB |
3741 | window = selected_window; |
3742 | else | |
b7826503 | 3743 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3744 | |
3745 | o = XWINDOW (window); | |
c0807608 | 3746 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3747 | |
77ae0fe3 | 3748 | if (NILP (size)) |
7ab12479 | 3749 | { |
265a9e55 | 3750 | if (!NILP (horflag)) |
c0807608 | 3751 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3752 | the usable space in columns by two. |
3753 | We round up, since the left-hand window may include | |
3754 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3755 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3756 | else |
949cf20f | 3757 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3758 | } |
3759 | else | |
3760 | { | |
b7826503 | 3761 | CHECK_NUMBER (size); |
77ae0fe3 | 3762 | size_int = XINT (size); |
7ab12479 JB |
3763 | } |
3764 | ||
3765 | if (MINI_WINDOW_P (o)) | |
3766 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3767 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3768 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3769 | |
a481b3ea | 3770 | check_min_window_sizes (); |
7ab12479 | 3771 | |
265a9e55 | 3772 | if (NILP (horflag)) |
7ab12479 | 3773 | { |
77ae0fe3 KH |
3774 | if (size_int < window_min_height) |
3775 | error ("Window height %d too small (after splitting)", size_int); | |
949cf20f | 3776 | if (size_int + window_min_height > XFASTINT (o->total_lines)) |
37962e60 | 3777 | error ("Window height %d too small (after splitting)", |
949cf20f | 3778 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3779 | if (NILP (o->parent) |
3780 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3781 | { |
3782 | make_dummy_parent (window); | |
3783 | new = o->parent; | |
3784 | XWINDOW (new)->vchild = window; | |
3785 | } | |
3786 | } | |
3787 | else | |
3788 | { | |
77ae0fe3 KH |
3789 | if (size_int < window_min_width) |
3790 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e | 3791 | |
949cf20f | 3792 | if (size_int + window_min_width > XFASTINT (o->total_cols)) |
37962e60 | 3793 | error ("Window width %d too small (after splitting)", |
949cf20f | 3794 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3795 | if (NILP (o->parent) |
3796 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3797 | { |
3798 | make_dummy_parent (window); | |
3799 | new = o->parent; | |
3800 | XWINDOW (new)->hchild = window; | |
3801 | } | |
3802 | } | |
3803 | ||
3804 | /* Now we know that window's parent is a vertical combination | |
3805 | if we are dividing vertically, or a horizontal combination | |
3806 | if we are making side-by-side windows */ | |
3807 | ||
3808 | windows_or_buffers_changed++; | |
c0807608 | 3809 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3810 | new = make_window (); |
3811 | p = XWINDOW (new); | |
3812 | ||
44fa5b1e | 3813 | p->frame = o->frame; |
7ab12479 | 3814 | p->next = o->next; |
265a9e55 | 3815 | if (!NILP (p->next)) |
7ab12479 JB |
3816 | XWINDOW (p->next)->prev = new; |
3817 | p->prev = window; | |
3818 | o->next = new; | |
3819 | p->parent = o->parent; | |
3820 | p->buffer = Qt; | |
5500c422 GM |
3821 | p->window_end_valid = Qnil; |
3822 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3823 | |
949cf20f KS |
3824 | /* Duplicate special geometry settings. */ |
3825 | ||
3826 | p->left_margin_cols = o->left_margin_cols; | |
3827 | p->right_margin_cols = o->right_margin_cols; | |
3828 | p->left_fringe_width = o->left_fringe_width; | |
3829 | p->right_fringe_width = o->right_fringe_width; | |
3830 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3831 | p->scroll_bar_width = o->scroll_bar_width; | |
3832 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3833 | ||
44fa5b1e | 3834 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3835 | |
265a9e55 | 3836 | if (!NILP (horflag)) |
7ab12479 | 3837 | { |
949cf20f KS |
3838 | p->total_lines = o->total_lines; |
3839 | p->top_line = o->top_line; | |
3840 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3841 | XSETFASTINT (o->total_cols, size_int); | |
3842 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3843 | adjust_window_margins (p); | |
3844 | adjust_window_margins (o); | |
7ab12479 JB |
3845 | } |
3846 | else | |
3847 | { | |
949cf20f KS |
3848 | p->left_col = o->left_col; |
3849 | p->total_cols = o->total_cols; | |
3850 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3851 | XSETFASTINT (o->total_lines, size_int); | |
3852 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3853 | } |
3854 | ||
5500c422 GM |
3855 | /* Adjust glyph matrices. */ |
3856 | adjust_glyphs (fo); | |
949cf20f KS |
3857 | |
3858 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3859 | return new; |
3860 | } | |
3861 | \f | |
f95284d2 | 3862 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 3, "p", |
fdb82f93 PJ |
3863 | doc: /* Make current window ARG lines bigger. |
3864 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 RS |
3865 | Interactively, if an argument is not given, make the window one line bigger. |
3866 | ||
3867 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3868 | of the siblings above or to the left of the selected window. Only | |
3869 | siblings to the right or below are changed. */) | |
3870 | (arg, side, preserve_before) | |
3871 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3872 | { |
b7826503 | 3873 | CHECK_NUMBER (arg); |
f95284d2 RS |
3874 | enlarge_window (selected_window, XINT (arg), !NILP (side), |
3875 | !NILP (preserve_before)); | |
543f5fb1 RS |
3876 | |
3877 | if (! NILP (Vwindow_configuration_change_hook)) | |
3878 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3879 | ||
7ab12479 JB |
3880 | return Qnil; |
3881 | } | |
3882 | ||
a5731348 | 3883 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 3, "p", |
fdb82f93 PJ |
3884 | doc: /* Make current window ARG lines smaller. |
3885 | From program, optional second arg non-nil means shrink sideways arg columns. | |
a5731348 SM |
3886 | Interactively, if an argument is not given, make the window one line smaller. |
3887 | ||
3888 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3889 | of the siblings above or to the left of the selected window. Only | |
3890 | siblings to the right or below are changed. */) | |
3891 | (arg, side, preserve_before) | |
3892 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3893 | { |
b7826503 | 3894 | CHECK_NUMBER (arg); |
a5731348 SM |
3895 | enlarge_window (selected_window, -XINT (arg), !NILP (side), |
3896 | !NILP (preserve_before)); | |
543f5fb1 RS |
3897 | |
3898 | if (! NILP (Vwindow_configuration_change_hook)) | |
3899 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3900 | ||
7ab12479 JB |
3901 | return Qnil; |
3902 | } | |
3903 | ||
3904 | int | |
3905 | window_height (window) | |
3906 | Lisp_Object window; | |
3907 | { | |
3908 | register struct window *p = XWINDOW (window); | |
949cf20f | 3909 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3910 | } |
3911 | ||
3912 | int | |
3913 | window_width (window) | |
3914 | Lisp_Object window; | |
3915 | { | |
3916 | register struct window *p = XWINDOW (window); | |
949cf20f | 3917 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3918 | } |
3919 | ||
177c0ea7 | 3920 | |
7ab12479 | 3921 | #define CURBEG(w) \ |
949cf20f | 3922 | *(widthflag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3923 | |
3924 | #define CURSIZE(w) \ | |
949cf20f | 3925 | *(widthflag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 3926 | |
233a4a2c | 3927 | |
f95284d2 | 3928 | /* Enlarge WINDOW by DELTA. WIDTHFLAG non-zero means |
233a4a2c | 3929 | increase its width. Siblings of the selected window are resized to |
f95284d2 RS |
3930 | fulfill the size request. If they become too small in the process, |
3931 | they will be deleted. | |
3932 | ||
3933 | If PRESERVE_BEFORE is nonzero, that means don't alter | |
3934 | the siblings to the left or above WINDOW. */ | |
7ab12479 | 3935 | |
f984d4fc | 3936 | static void |
f95284d2 | 3937 | enlarge_window (window, delta, widthflag, preserve_before) |
86c8e823 | 3938 | Lisp_Object window; |
f95284d2 | 3939 | int delta, widthflag, preserve_before; |
7ab12479 | 3940 | { |
86c8e823 | 3941 | Lisp_Object parent, next, prev; |
233a4a2c | 3942 | struct window *p; |
3578db3c KR |
3943 | Lisp_Object *sizep; |
3944 | int maximum; | |
5e14b1fc AS |
3945 | int (*sizefun) P_ ((Lisp_Object)) |
3946 | = widthflag ? window_width : window_height; | |
233a4a2c | 3947 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3948 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3949 | |
233a4a2c GM |
3950 | /* Check values of window_min_width and window_min_height for |
3951 | validity. */ | |
a481b3ea | 3952 | check_min_window_sizes (); |
7ab12479 | 3953 | |
233a4a2c | 3954 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3955 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3956 | error ("Window is not resizable"); | |
3957 | ||
3958 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3959 | while (1) |
3960 | { | |
3961 | p = XWINDOW (window); | |
3962 | parent = p->parent; | |
177c0ea7 | 3963 | |
265a9e55 | 3964 | if (NILP (parent)) |
7ab12479 JB |
3965 | { |
3966 | if (widthflag) | |
3967 | error ("No other window to side of this one"); | |
3968 | break; | |
3969 | } | |
177c0ea7 | 3970 | |
233a4a2c GM |
3971 | if (widthflag |
3972 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3973 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3974 | break; |
177c0ea7 | 3975 | |
7ab12479 JB |
3976 | window = parent; |
3977 | } | |
3978 | ||
05c2896a | 3979 | sizep = &CURSIZE (window); |
7ab12479 | 3980 | |
7ab12479 JB |
3981 | { |
3982 | register int maxdelta; | |
7ab12479 | 3983 | |
f95284d2 RS |
3984 | /* Compute the maximum size increment this window can have. */ |
3985 | ||
3986 | if (preserve_before) | |
3987 | { | |
3988 | if (!NILP (parent)) | |
3989 | { | |
3990 | maxdelta = (*sizefun) (parent) - XINT (*sizep); | |
3991 | /* Subtract size of siblings before, since we can't take that. */ | |
1ab964d7 | 3992 | maxdelta -= XINT (CURBEG (window)) - XINT (CURBEG (parent)); |
f95284d2 RS |
3993 | } |
3994 | else | |
3995 | maxdelta = (!NILP (p->next) ? ((*sizefun) (p->next) | |
3996 | - window_min_size (XWINDOW (p->next), | |
3997 | widthflag, 0, 0)) | |
3998 | : (delta = 0)); | |
3999 | } | |
4000 | else | |
4001 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) | |
4002 | /* This is a main window followed by a minibuffer. */ | |
4003 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4004 | - window_min_size (XWINDOW (p->next), | |
4005 | widthflag, 0, 0)) | |
4006 | /* This is a minibuffer following a main window. */ | |
4007 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4008 | - window_min_size (XWINDOW (p->prev), | |
4009 | widthflag, 0, 0)) | |
4010 | /* This is a frame with only one window, a minibuffer-only | |
4011 | or a minibufferless frame. */ | |
4012 | : (delta = 0)); | |
7ab12479 JB |
4013 | |
4014 | if (delta > maxdelta) | |
4015 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4016 | the full frame, or make the only window aside from the |
4017 | minibuffer the full frame. */ | |
7ab12479 | 4018 | delta = maxdelta; |
6b54027b | 4019 | } |
d5783c40 | 4020 | |
3578db3c | 4021 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 4022 | { |
543f5fb1 | 4023 | delete_window (window); |
d5783c40 | 4024 | return; |
6b54027b RS |
4025 | } |
4026 | ||
4027 | if (delta == 0) | |
4028 | return; | |
7ab12479 | 4029 | |
f95284d2 | 4030 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
4031 | maximum = 0; |
4032 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 4033 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 4034 | widthflag, 0, 0); |
f95284d2 RS |
4035 | if (! preserve_before) |
4036 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
4037 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
4038 | widthflag, 0, 0); | |
db98a733 | 4039 | |
f95284d2 | 4040 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4041 | if (delta <= maximum) |
7ab12479 | 4042 | { |
db98a733 RS |
4043 | Lisp_Object first_unaffected; |
4044 | Lisp_Object first_affected; | |
233a4a2c | 4045 | int fixed_p; |
db98a733 RS |
4046 | |
4047 | next = p->next; | |
4048 | prev = p->prev; | |
4049 | first_affected = window; | |
4050 | /* Look at one sibling at a time, | |
4051 | moving away from this window in both directions alternately, | |
4052 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 RS |
4053 | while (delta != 0 |
4054 | && (!NILP (next) || (!preserve_before && !NILP (prev)))) | |
db98a733 | 4055 | { |
db98a733 RS |
4056 | if (! NILP (next)) |
4057 | { | |
c1636aa6 | 4058 | int this_one = ((*sizefun) (next) |
233a4a2c | 4059 | - window_min_size (XWINDOW (next), |
f984d4fc | 4060 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
4061 | if (!fixed_p) |
4062 | { | |
4063 | if (this_one > delta) | |
4064 | this_one = delta; | |
177c0ea7 | 4065 | |
233a4a2c | 4066 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4067 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4068 | |
233a4a2c GM |
4069 | delta -= this_one; |
4070 | } | |
177c0ea7 | 4071 | |
db98a733 RS |
4072 | next = XWINDOW (next)->next; |
4073 | } | |
177c0ea7 | 4074 | |
db98a733 RS |
4075 | if (delta == 0) |
4076 | break; | |
177c0ea7 | 4077 | |
f95284d2 | 4078 | if (!preserve_before && ! NILP (prev)) |
db98a733 | 4079 | { |
c1636aa6 | 4080 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4081 | - window_min_size (XWINDOW (prev), |
f984d4fc | 4082 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
4083 | if (!fixed_p) |
4084 | { | |
4085 | if (this_one > delta) | |
4086 | this_one = delta; | |
177c0ea7 | 4087 | |
233a4a2c | 4088 | first_affected = prev; |
177c0ea7 | 4089 | |
233a4a2c | 4090 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4091 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4092 | |
4093 | delta -= this_one; | |
4094 | } | |
177c0ea7 | 4095 | |
db98a733 RS |
4096 | prev = XWINDOW (prev)->prev; |
4097 | } | |
4098 | } | |
4099 | ||
233a4a2c GM |
4100 | xassert (delta == 0); |
4101 | ||
db98a733 RS |
4102 | /* Now recalculate the edge positions of all the windows affected, |
4103 | based on the new sizes. */ | |
4104 | first_unaffected = next; | |
4105 | prev = first_affected; | |
4106 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4107 | prev = next, next = XWINDOW (next)->next) | |
4108 | { | |
3578db3c | 4109 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4110 | /* This does not change size of NEXT, |
4111 | but it propagates the new top edge to its children */ | |
4112 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4113 | } | |
7ab12479 JB |
4114 | } |
4115 | else | |
4116 | { | |
4117 | register int delta1; | |
4118 | register int opht = (*sizefun) (parent); | |
4119 | ||
3578db3c | 4120 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4121 | { |
4122 | /* If trying to grow this window to or beyond size of the parent, | |
4123 | just delete all the sibling windows. */ | |
dc1ab1ee | 4124 | Lisp_Object start, tem, next; |
daf516d3 | 4125 | |
dc1ab1ee RS |
4126 | start = XWINDOW (parent)->vchild; |
4127 | if (NILP (start)) | |
4128 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4129 | |
dc1ab1ee RS |
4130 | /* Delete any siblings that come after WINDOW. */ |
4131 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4132 | while (! NILP (tem)) |
4133 | { | |
4134 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4135 | delete_window (tem); |
4136 | tem = next; | |
4137 | } | |
4138 | ||
4139 | /* Delete any siblings that come after WINDOW. | |
4140 | Note that if START is not WINDOW, then WINDOW still | |
4141 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4142 | tem = start; | |
4143 | while (! EQ (tem, window)) | |
4144 | { | |
4145 | next = XWINDOW (tem)->next; | |
4146 | delete_window (tem); | |
daf516d3 RS |
4147 | tem = next; |
4148 | } | |
4149 | } | |
7ab12479 | 4150 | else |
233a4a2c GM |
4151 | { |
4152 | /* Otherwise, make delta1 just right so that if we add | |
4153 | delta1 lines to this window and to the parent, and then | |
4154 | shrink the parent back to its original size, the new | |
4155 | proportional size of this window will increase by delta. | |
4156 | ||
4157 | The function size_window will compute the new height h' | |
4158 | of the window from delta1 as: | |
177c0ea7 | 4159 | |
233a4a2c GM |
4160 | e = delta1/n |
4161 | x = delta1 - delta1/n * n for the 1st resizable child | |
4162 | h' = h + e + x | |
4163 | ||
4164 | where n is the number of children that can be resized. | |
4165 | We can ignore x by choosing a delta1 that is a multiple of | |
4166 | n. We want the height of this window to come out as | |
177c0ea7 | 4167 | |
233a4a2c GM |
4168 | h' = h + delta |
4169 | ||
4170 | So, delta1 must be | |
177c0ea7 | 4171 | |
233a4a2c GM |
4172 | h + e = h + delta |
4173 | delta1/n = delta | |
4174 | delta1 = n * delta. | |
4175 | ||
a5731348 | 4176 | The number of children n equals the number of resizable |
233a4a2c | 4177 | children of this window + 1 because we know window itself |
6e0dca3d | 4178 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4179 | |
4180 | struct window *w = XWINDOW (window); | |
4181 | Lisp_Object s; | |
4182 | int n = 1; | |
4183 | ||
4184 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
4185 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
4186 | ++n; | |
4187 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
4188 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
4189 | ++n; | |
4190 | ||
4191 | delta1 = n * delta; | |
7ab12479 | 4192 | |
daf516d3 RS |
4193 | /* Add delta1 lines or columns to this window, and to the parent, |
4194 | keeping things consistent while not affecting siblings. */ | |
4195 | XSETINT (CURSIZE (parent), opht + delta1); | |
4196 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4197 | ||
4198 | /* Squeeze out delta1 lines or columns from our parent, | |
4199 | shriking this window and siblings proportionately. | |
4200 | This brings parent back to correct size. | |
4201 | Delta1 was calculated so this makes this window the desired size, | |
4202 | taking it all out of the siblings. */ | |
4203 | (*setsizefun) (parent, opht, 0); | |
4204 | ||
4205 | } | |
7ab12479 JB |
4206 | } |
4207 | ||
d834a2e9 | 4208 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4209 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4210 | |
4211 | /* Adjust glyph matrices. */ | |
4212 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4213 | } |
c1636aa6 | 4214 | |
7ab12479 JB |
4215 | #undef CURBEG |
4216 | #undef CURSIZE | |
4217 | ||
5500c422 | 4218 | |
f984d4fc GM |
4219 | \f |
4220 | /*********************************************************************** | |
4221 | Resizing Mini-Windows | |
4222 | ***********************************************************************/ | |
4223 | ||
4224 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4225 | |
43b4a21f GM |
4226 | enum save_restore_action |
4227 | { | |
4228 | CHECK_ORIG_SIZES, | |
4229 | SAVE_ORIG_SIZES, | |
4230 | RESTORE_ORIG_SIZES | |
4231 | }; | |
4232 | ||
177c0ea7 | 4233 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4234 | enum save_restore_action)); |
f984d4fc GM |
4235 | |
4236 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4237 | from lowest windows first. */ | |
4238 | ||
4239 | static void | |
4240 | shrink_window_lowest_first (w, height) | |
4241 | struct window *w; | |
4242 | int height; | |
4243 | { | |
4244 | struct window *c; | |
4245 | Lisp_Object child; | |
4246 | int old_height; | |
4247 | ||
4248 | xassert (!MINI_WINDOW_P (w)); | |
4249 | ||
4250 | /* Set redisplay hints. */ | |
4251 | XSETFASTINT (w->last_modified, 0); | |
4252 | XSETFASTINT (w->last_overlay_modified, 0); | |
4253 | windows_or_buffers_changed++; | |
4254 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4255 | ||
949cf20f KS |
4256 | old_height = XFASTINT (w->total_lines); |
4257 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4258 | |
4259 | if (!NILP (w->hchild)) | |
4260 | { | |
4261 | for (child = w->hchild; !NILP (child); child = c->next) | |
4262 | { | |
4263 | c = XWINDOW (child); | |
949cf20f | 4264 | c->top_line = w->top_line; |
f984d4fc GM |
4265 | shrink_window_lowest_first (c, height); |
4266 | } | |
4267 | } | |
4268 | else if (!NILP (w->vchild)) | |
4269 | { | |
4270 | Lisp_Object last_child; | |
4271 | int delta = old_height - height; | |
4272 | int last_top; | |
6bbd7a29 GM |
4273 | |
4274 | last_child = Qnil; | |
177c0ea7 | 4275 | |
f984d4fc GM |
4276 | /* Find the last child. We are taking space from lowest windows |
4277 | first, so we iterate over children from the last child | |
4278 | backwards. */ | |
4279 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
4280 | last_child = child; | |
4281 | ||
4282 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4283 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4284 | { | |
4285 | int this_one; | |
177c0ea7 | 4286 | |
f984d4fc | 4287 | c = XWINDOW (child); |
949cf20f | 4288 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4289 | |
4290 | if (this_one > delta) | |
4291 | this_one = delta; | |
4292 | ||
949cf20f | 4293 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4294 | delta -= this_one; |
4295 | } | |
4296 | ||
4297 | /* Compute new positions. */ | |
949cf20f | 4298 | last_top = XINT (w->top_line); |
f984d4fc GM |
4299 | for (child = w->vchild; !NILP (child); child = c->next) |
4300 | { | |
4301 | c = XWINDOW (child); | |
949cf20f KS |
4302 | c->top_line = make_number (last_top); |
4303 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4304 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4305 | } |
4306 | } | |
4307 | } | |
4308 | ||
4309 | ||
43b4a21f GM |
4310 | /* Save, restore, or check positions and sizes in the window tree |
4311 | rooted at W. ACTION says what to do. | |
f984d4fc | 4312 | |
949cf20f KS |
4313 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4314 | orig_total_lines members are valid for all windows in the window | |
4315 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4316 | |
43b4a21f | 4317 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4318 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4319 | |
949cf20f KS |
4320 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4321 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4322 | |
4323 | static int | |
4324 | save_restore_orig_size (w, action) | |
f984d4fc | 4325 | struct window *w; |
43b4a21f | 4326 | enum save_restore_action action; |
f984d4fc | 4327 | { |
43b4a21f GM |
4328 | int success_p = 1; |
4329 | ||
f984d4fc GM |
4330 | while (w) |
4331 | { | |
4332 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4333 | { |
4334 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4335 | success_p = 0; | |
4336 | } | |
f984d4fc | 4337 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4338 | { |
4339 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4340 | success_p = 0; | |
4341 | } | |
177c0ea7 | 4342 | |
43b4a21f | 4343 | switch (action) |
f984d4fc | 4344 | { |
43b4a21f | 4345 | case CHECK_ORIG_SIZES: |
949cf20f | 4346 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4347 | return 0; |
4348 | break; | |
4349 | ||
4350 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4351 | w->orig_top_line = w->top_line; |
4352 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4353 | XSETFASTINT (w->last_modified, 0); |
4354 | XSETFASTINT (w->last_overlay_modified, 0); | |
4355 | break; | |
4356 | ||
4357 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4358 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4359 | w->top_line = w->orig_top_line; | |
4360 | w->total_lines = w->orig_total_lines; | |
4361 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4362 | XSETFASTINT (w->last_modified, 0); |
4363 | XSETFASTINT (w->last_overlay_modified, 0); | |
4364 | break; | |
4365 | ||
4366 | default: | |
4367 | abort (); | |
f984d4fc | 4368 | } |
43b4a21f | 4369 | |
f984d4fc GM |
4370 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4371 | } | |
43b4a21f GM |
4372 | |
4373 | return success_p; | |
f984d4fc GM |
4374 | } |
4375 | ||
4376 | ||
4377 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4378 | without deleting other windows. */ | |
4379 | ||
4380 | void | |
4381 | grow_mini_window (w, delta) | |
4382 | struct window *w; | |
4383 | int delta; | |
4384 | { | |
4385 | struct frame *f = XFRAME (w->frame); | |
4386 | struct window *root; | |
177c0ea7 | 4387 | |
f984d4fc GM |
4388 | xassert (MINI_WINDOW_P (w)); |
4389 | xassert (delta >= 0); | |
177c0ea7 | 4390 | |
f984d4fc GM |
4391 | /* Check values of window_min_width and window_min_height for |
4392 | validity. */ | |
4393 | check_min_window_sizes (); | |
4394 | ||
4395 | /* Compute how much we can enlarge the mini-window without deleting | |
4396 | other windows. */ | |
4397 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4398 | if (delta) | |
4399 | { | |
4400 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4401 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4402 | /* Note that the root window may already be smaller than |
eafa3196 | 4403 | min_height. */ |
949cf20f | 4404 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4405 | } |
177c0ea7 | 4406 | |
f984d4fc GM |
4407 | if (delta) |
4408 | { | |
4409 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4410 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4411 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4412 | |
4413 | /* Shrink other windows. */ | |
949cf20f | 4414 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4415 | |
4416 | /* Grow the mini-window. */ | |
949cf20f KS |
4417 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4418 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4419 | XSETFASTINT (w->last_modified, 0); |
4420 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4421 | |
f984d4fc GM |
4422 | adjust_glyphs (f); |
4423 | } | |
4424 | } | |
4425 | ||
4426 | ||
86c8e823 GM |
4427 | /* Shrink mini-window W. If there is recorded info about window sizes |
4428 | before a call to grow_mini_window, restore recorded window sizes. | |
4429 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4430 | line. */ | |
f984d4fc GM |
4431 | |
4432 | void | |
4433 | shrink_mini_window (w) | |
4434 | struct window *w; | |
4435 | { | |
4436 | struct frame *f = XFRAME (w->frame); | |
4437 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4438 | ||
43b4a21f | 4439 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4440 | { |
43b4a21f | 4441 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4442 | adjust_glyphs (f); |
4443 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4444 | windows_or_buffers_changed = 1; | |
4445 | } | |
949cf20f | 4446 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4447 | { |
0130fe1a GM |
4448 | /* Distribute the additional lines of the mini-window |
4449 | among the other windows. */ | |
86c8e823 GM |
4450 | Lisp_Object window; |
4451 | XSETWINDOW (window, w); | |
949cf20f | 4452 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0, 0); |
86c8e823 | 4453 | } |
f984d4fc GM |
4454 | } |
4455 | ||
4456 | ||
4457 | \f | |
5500c422 GM |
4458 | /* Mark window cursors off for all windows in the window tree rooted |
4459 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4460 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4461 | the frame are cleared. */ | |
4462 | ||
4463 | void | |
4464 | mark_window_cursors_off (w) | |
4465 | struct window *w; | |
4466 | { | |
4467 | while (w) | |
4468 | { | |
4469 | if (!NILP (w->hchild)) | |
4470 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4471 | else if (!NILP (w->vchild)) | |
4472 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4473 | else | |
4474 | w->phys_cursor_on_p = 0; | |
4475 | ||
4476 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4477 | } | |
4478 | } | |
4479 | ||
4480 | ||
e9c195b1 | 4481 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4482 | |
4483 | int | |
4484 | window_internal_height (w) | |
4485 | struct window *w; | |
4486 | { | |
949cf20f | 4487 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4488 | |
e9c195b1 GM |
4489 | if (!MINI_WINDOW_P (w)) |
4490 | { | |
4491 | if (!NILP (w->parent) | |
4492 | || !NILP (w->vchild) | |
4493 | || !NILP (w->hchild) | |
4494 | || !NILP (w->next) | |
4495 | || !NILP (w->prev) | |
4496 | || WINDOW_WANTS_MODELINE_P (w)) | |
4497 | --ht; | |
7ab12479 | 4498 | |
e9c195b1 GM |
4499 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4500 | --ht; | |
4501 | } | |
7ab12479 JB |
4502 | |
4503 | return ht; | |
4504 | } | |
4505 | ||
535e0b8e JB |
4506 | |
4507 | /* Return the number of columns in W. | |
a3c87d4e | 4508 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4509 | separating W from the sibling to its right. */ |
5500c422 | 4510 | |
535e0b8e | 4511 | int |
949cf20f | 4512 | window_box_text_cols (w) |
535e0b8e JB |
4513 | struct window *w; |
4514 | { | |
5500c422 | 4515 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4516 | int width = XINT (w->total_cols); |
535e0b8e | 4517 | |
949cf20f | 4518 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4519 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4520 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4521 | else if (!FRAME_WINDOW_P (f) | |
4522 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4523 | /* The column of `|' characters separating side-by-side windows |
4524 | occupies one column only. */ | |
4525 | width -= 1; | |
4526 | ||
5500c422 | 4527 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4528 | /* On window-systems, fringes and display margins cannot be |
4529 | used for normal text. */ | |
4530 | width -= (WINDOW_FRINGE_COLS (w) | |
4531 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4532 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4533 | |
4534 | return width; | |
535e0b8e JB |
4535 | } |
4536 | ||
5500c422 GM |
4537 | \f |
4538 | /************************************************************************ | |
4539 | Window Scrolling | |
4540 | ***********************************************************************/ | |
535e0b8e | 4541 | |
5500c422 | 4542 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4543 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4544 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4545 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4546 | means don't signal an error if we try to move over BEGV or ZV, | |
4547 | respectively. */ | |
7ab12479 | 4548 | |
101d1605 RS |
4549 | static void |
4550 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4551 | Lisp_Object window; |
4552 | int n; | |
101d1605 | 4553 | int whole; |
f8026fd8 | 4554 | int noerror; |
5500c422 | 4555 | { |
cba59f77 RS |
4556 | immediate_quit = 1; |
4557 | ||
5500c422 GM |
4558 | /* If we must, use the pixel-based version which is much slower than |
4559 | the line-based one but can handle varying line heights. */ | |
4560 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4561 | window_scroll_pixel_based (window, n, whole, noerror); | |
4562 | else | |
4563 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4564 | |
4565 | immediate_quit = 0; | |
5500c422 GM |
4566 | } |
4567 | ||
4568 | ||
4569 | /* Implementation of window_scroll that works based on pixel line | |
4570 | heights. See the comment of window_scroll for parameter | |
4571 | descriptions. */ | |
4572 | ||
4573 | static void | |
4574 | window_scroll_pixel_based (window, n, whole, noerror) | |
4575 | Lisp_Object window; | |
4576 | int n; | |
4577 | int whole; | |
4578 | int noerror; | |
4579 | { | |
4580 | struct it it; | |
4581 | struct window *w = XWINDOW (window); | |
4582 | struct text_pos start; | |
4583 | Lisp_Object tem; | |
4584 | int this_scroll_margin; | |
4585 | int preserve_y; | |
5cdb3cf3 MB |
4586 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4587 | int vscrolled = 0; | |
5500c422 GM |
4588 | |
4589 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4590 | |
5500c422 | 4591 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4592 | the screen. Allow PT to be partially visible, otherwise |
4593 | something like (scroll-down 1) with PT in the line before | |
4594 | the partially visible one would recenter. */ | |
4595 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
4596 | if (NILP (tem)) |
4597 | { | |
4598 | /* Move backward half the height of the window. Performance note: | |
4599 | vmotion used here is about 10% faster, but would give wrong | |
4600 | results for variable height lines. */ | |
4601 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4602 | it.current_y = it.last_visible_y; | |
f204989e | 4603 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4604 | |
5500c422 GM |
4605 | /* The function move_iterator_vertically may move over more than |
4606 | the specified y-distance. If it->w is small, e.g. a | |
4607 | mini-buffer window, we may end up in front of the window's | |
4608 | display area. This is the case when Start displaying at the | |
4609 | start of the line containing PT in this case. */ | |
4610 | if (it.current_y <= 0) | |
4611 | { | |
4612 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4613 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4614 | it.current_y = 0; |
4615 | } | |
4616 | ||
4617 | start = it.current.pos; | |
4618 | } | |
e56263e5 KS |
4619 | else if (auto_window_vscroll_p) |
4620 | { | |
5b1ba1e3 | 4621 | if (tem = XCAR (XCDR (XCDR (tem))), CONSP (tem)) |
e56263e5 KS |
4622 | { |
4623 | int px; | |
4624 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4625 | if (whole) | |
e856c216 KS |
4626 | dy = max ((window_box_height (w) |
4627 | - next_screen_context_lines * dy), | |
4628 | dy); | |
e56263e5 KS |
4629 | dy *= n; |
4630 | ||
5b1ba1e3 | 4631 | if (n < 0 && (px = XINT (XCAR (tem))) > 0) |
e56263e5 KS |
4632 | { |
4633 | px = max (0, -w->vscroll - min (px, -dy)); | |
4634 | Fset_window_vscroll (window, make_number (px), Qt); | |
4635 | return; | |
4636 | } | |
5b1ba1e3 | 4637 | if (n > 0 && (px = XINT (XCDR (tem))) > 0) |
e56263e5 KS |
4638 | { |
4639 | px = max (0, -w->vscroll + min (px, dy)); | |
4640 | Fset_window_vscroll (window, make_number (px), Qt); | |
4641 | return; | |
4642 | } | |
4643 | } | |
4644 | Fset_window_vscroll (window, make_number (0), Qt); | |
4645 | } | |
5500c422 | 4646 | |
d0c38d63 | 4647 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4648 | point in the same window line as it is now, so get that line. */ |
4649 | if (!NILP (Vscroll_preserve_screen_position)) | |
4650 | { | |
4651 | start_display (&it, w, start); | |
4652 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4653 | preserve_y = it.current_y; | |
4654 | } | |
4655 | else | |
4656 | preserve_y = -1; | |
4657 | ||
4658 | /* Move iterator it from start the specified distance forward or | |
4659 | backward. The result is the new window start. */ | |
4660 | start_display (&it, w, start); | |
4661 | if (whole) | |
4662 | { | |
e856c216 KS |
4663 | int start_pos = IT_CHARPOS (it); |
4664 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4665 | dy = max ((window_box_height (w) | |
4666 | - next_screen_context_lines * dy), | |
4667 | dy) * n; | |
d72340d4 GM |
4668 | |
4669 | /* Note that move_it_vertically always moves the iterator to the | |
4670 | start of a line. So, if the last line doesn't have a newline, | |
4671 | we would end up at the start of the line ending at ZV. */ | |
4672 | if (dy <= 0) | |
e856c216 KS |
4673 | { |
4674 | move_it_vertically_backward (&it, -dy); | |
4675 | /* Ensure we actually does move, e.g. in case we are currently | |
4676 | looking at an image that is taller that the window height. */ | |
4677 | while (start_pos == IT_CHARPOS (it) | |
4678 | && start_pos > BEGV) | |
4679 | move_it_by_lines (&it, -1, 1); | |
4680 | } | |
d72340d4 | 4681 | else if (dy > 0) |
bed83ee4 | 4682 | { |
bed83ee4 KS |
4683 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4684 | MOVE_TO_POS | MOVE_TO_Y); | |
4685 | /* Ensure we actually does move, e.g. in case we are currently | |
4686 | looking at an image that is taller that the window height. */ | |
4687 | while (start_pos == IT_CHARPOS (it) | |
4688 | && start_pos < ZV) | |
4689 | move_it_by_lines (&it, 1, 1); | |
4690 | } | |
5500c422 GM |
4691 | } |
4692 | else | |
4693 | move_it_by_lines (&it, n, 1); | |
4694 | ||
96ae58c8 RS |
4695 | /* We failed if we find ZV is already on the screen (scrolling up, |
4696 | means there's nothing past the end), or if we can't start any | |
4697 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4698 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4699 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4700 | { |
5cdb3cf3 MB |
4701 | if (IT_CHARPOS (it) == ZV) |
4702 | { | |
07ce8b53 RS |
4703 | if (it.current_y < it.last_visible_y |
4704 | && (it.current_y + it.max_ascent + it.max_descent | |
4705 | >= it.last_visible_y)) | |
a74eca50 GM |
4706 | { |
4707 | /* The last line was only partially visible, make it fully | |
4708 | visible. */ | |
4709 | w->vscroll = (it.last_visible_y | |
4710 | - it.current_y + it.max_ascent + it.max_descent); | |
4711 | adjust_glyphs (it.f); | |
4712 | } | |
5cdb3cf3 MB |
4713 | else if (noerror) |
4714 | return; | |
4715 | else | |
4716 | Fsignal (Qend_of_buffer, Qnil); | |
4717 | } | |
5500c422 | 4718 | else |
5cdb3cf3 MB |
4719 | { |
4720 | if (w->vscroll != 0) | |
4721 | /* The first line was only partially visible, make it fully | |
4722 | visible. */ | |
4723 | w->vscroll = 0; | |
4724 | else if (noerror) | |
4725 | return; | |
4726 | else | |
4727 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4728 | } | |
4729 | ||
4730 | /* If control gets here, then we vscrolled. */ | |
4731 | ||
4732 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4733 | ||
4734 | /* Don't try to change the window start below. */ | |
4735 | vscrolled = 1; | |
5500c422 GM |
4736 | } |
4737 | ||
5cdb3cf3 MB |
4738 | if (! vscrolled) |
4739 | { | |
dad67609 RS |
4740 | int pos = IT_CHARPOS (it); |
4741 | int bytepos; | |
e68def1e AS |
4742 | |
4743 | /* If in the middle of a multi-glyph character move forward to | |
4744 | the next character. */ | |
4745 | if (in_display_vector_p (&it)) | |
4746 | { | |
4747 | ++pos; | |
4748 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4749 | } | |
4750 | ||
5cdb3cf3 | 4751 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4752 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4753 | w->buffer); |
dad67609 RS |
4754 | bytepos = XMARKER (w->start)->bytepos; |
4755 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4756 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4757 | w->update_mode_line = Qt; |
4758 | XSETFASTINT (w->last_modified, 0); | |
4759 | XSETFASTINT (w->last_overlay_modified, 0); | |
4760 | /* Set force_start so that redisplay_window will run the | |
4761 | window-scroll-functions. */ | |
4762 | w->force_start = Qt; | |
4763 | } | |
177c0ea7 | 4764 | |
dc297565 RS |
4765 | /* The rest of this function uses current_y in a nonstandard way, |
4766 | not including the height of the header line if any. */ | |
5500c422 | 4767 | it.current_y = it.vpos = 0; |
177c0ea7 | 4768 | |
940f53e5 RS |
4769 | /* Move PT out of scroll margins. |
4770 | This code wants current_y to be zero at the window start position | |
4771 | even if there is a header line. */ | |
4772 | this_scroll_margin = max (0, scroll_margin); | |
4773 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4774 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4775 | ||
4776 | if (n > 0) | |
5500c422 | 4777 | { |
940f53e5 RS |
4778 | /* We moved the window start towards ZV, so PT may be now |
4779 | in the scroll margin at the top. */ | |
4780 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4781 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4782 | && (NILP (Vscroll_preserve_screen_position) | |
4783 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4784 | /* We found PT at a legitimate height. Leave it alone. */ |
4785 | ; | |
4786 | else if (preserve_y >= 0) | |
4787 | { | |
fa3c3426 RS |
4788 | /* If we have a header line, take account of it. |
4789 | This is necessary because we set it.current_y to 0, above. */ | |
940f53e5 RS |
4790 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4791 | preserve_y -= CURRENT_HEADER_LINE_HEIGHT (w); | |
dc297565 | 4792 | |
940f53e5 RS |
4793 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); |
4794 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4795 | } | |
4796 | else | |
5500c422 | 4797 | { |
5500c422 | 4798 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4799 | { |
4800 | int prev = it.current_y; | |
4801 | move_it_by_lines (&it, 1, 1); | |
4802 | if (prev == it.current_y) | |
4803 | break; | |
4804 | } | |
5500c422 GM |
4805 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4806 | } | |
940f53e5 RS |
4807 | } |
4808 | else if (n < 0) | |
4809 | { | |
4810 | int charpos, bytepos; | |
aed328bf | 4811 | int partial_p; |
940f53e5 RS |
4812 | |
4813 | /* Save our position, for the preserve_y case. */ | |
4814 | charpos = IT_CHARPOS (it); | |
4815 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4816 | |
940f53e5 RS |
4817 | /* We moved the window start towards BEGV, so PT may be now |
4818 | in the scroll margin at the bottom. */ | |
4819 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4820 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4821 | - this_scroll_margin - 1), | |
4822 | -1, | |
940f53e5 RS |
4823 | MOVE_TO_POS | MOVE_TO_Y); |
4824 | ||
aed328bf KS |
4825 | /* Save our position, in case it's correct. */ |
4826 | charpos = IT_CHARPOS (it); | |
4827 | bytepos = IT_BYTEPOS (it); | |
4828 | ||
4829 | /* See if point is on a partially visible line at the end. */ | |
4830 | if (it.what == IT_EOB) | |
4831 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4832 | else | |
4833 | { | |
4834 | move_it_by_lines (&it, 1, 1); | |
4835 | partial_p = it.current_y > it.last_visible_y; | |
4836 | } | |
4837 | ||
bdf4ec93 RS |
4838 | if (charpos == PT && !partial_p |
4839 | && (NILP (Vscroll_preserve_screen_position) | |
4840 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4841 | /* We found PT before we found the display margin, so PT is ok. */ |
4842 | ; | |
4843 | else if (preserve_y >= 0) | |
4844 | { | |
4845 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4846 | start_display (&it, w, start); | |
fa3c3426 RS |
4847 | #if 0 /* It's wrong to subtract this here |
4848 | because we called start_display again | |
4849 | and did not alter it.current_y this time. */ | |
4850 | ||
940f53e5 RS |
4851 | /* If we have a header line, take account of it. */ |
4852 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
4853 | preserve_y -= CURRENT_HEADER_LINE_HEIGHT (w); | |
fa3c3426 | 4854 | #endif |
5cdb3cf3 | 4855 | |
940f53e5 RS |
4856 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); |
4857 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4858 | } | |
4859 | else | |
4860 | { | |
aed328bf | 4861 | if (partial_p) |
5cdb3cf3 MB |
4862 | /* The last line was only partially visible, so back up two |
4863 | lines to make sure we're on a fully visible line. */ | |
4864 | { | |
4865 | move_it_by_lines (&it, -2, 0); | |
4866 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4867 | } | |
4868 | else | |
4869 | /* No, the position we saved is OK, so use it. */ | |
4870 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4871 | } |
4872 | } | |
4873 | } | |
4874 | ||
4875 | ||
4876 | /* Implementation of window_scroll that works based on screen lines. | |
4877 | See the comment of window_scroll for parameter descriptions. */ | |
4878 | ||
4879 | static void | |
4880 | window_scroll_line_based (window, n, whole, noerror) | |
4881 | Lisp_Object window; | |
4882 | int n; | |
4883 | int whole; | |
4884 | int noerror; | |
7ab12479 JB |
4885 | { |
4886 | register struct window *w = XWINDOW (window); | |
5500c422 | 4887 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4888 | register int pos, pos_byte; |
7ab12479 JB |
4889 | register int ht = window_internal_height (w); |
4890 | register Lisp_Object tem; | |
4891 | int lose; | |
5500c422 | 4892 | Lisp_Object bolp; |
345d45b2 | 4893 | int startpos; |
101d1605 RS |
4894 | struct position posit; |
4895 | int original_vpos; | |
4896 | ||
d4e7cf01 GM |
4897 | /* If scrolling screen-fulls, compute the number of lines to |
4898 | scroll from the window's height. */ | |
4899 | if (whole) | |
4900 | n *= max (1, ht - next_screen_context_lines); | |
4901 | ||
101d1605 RS |
4902 | startpos = marker_position (w->start); |
4903 | ||
4904 | posit = *compute_motion (startpos, 0, 0, 0, | |
4905 | PT, ht, 0, | |
ec2b66c4 | 4906 | -1, XINT (w->hscroll), |
101d1605 RS |
4907 | 0, w); |
4908 | original_vpos = posit.vpos; | |
0a1f771a | 4909 | |
d834a2e9 | 4910 | XSETFASTINT (tem, PT); |
6ffdb539 | 4911 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4912 | |
265a9e55 | 4913 | if (NILP (tem)) |
7ab12479 | 4914 | { |
cd2be1dd | 4915 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4916 | startpos = PT; |
7ab12479 JB |
4917 | } |
4918 | ||
345d45b2 | 4919 | SET_PT (startpos); |
5ce7b543 | 4920 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4921 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4922 | pos = PT; |
b73ea88e | 4923 | pos_byte = PT_BYTE; |
7ab12479 | 4924 | bolp = Fbolp (); |
b73ea88e | 4925 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4926 | |
4927 | if (lose) | |
f8026fd8 JB |
4928 | { |
4929 | if (noerror) | |
4930 | return; | |
4931 | else | |
4932 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4933 | } | |
7ab12479 JB |
4934 | |
4935 | if (pos < ZV) | |
7ab12479 | 4936 | { |
0c7da84e RS |
4937 | int this_scroll_margin = scroll_margin; |
4938 | ||
4939 | /* Don't use a scroll margin that is negative or too large. */ | |
4940 | if (this_scroll_margin < 0) | |
4941 | this_scroll_margin = 0; | |
4942 | ||
949cf20f KS |
4943 | if (XINT (w->total_lines) < 4 * scroll_margin) |
4944 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 4945 | |
b73ea88e | 4946 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4947 | w->start_at_line_beg = bolp; |
4948 | w->update_mode_line = Qt; | |
d834a2e9 | 4949 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4950 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4951 | /* Set force_start so that redisplay_window will run |
4952 | the window-scroll-functions. */ | |
4953 | w->force_start = Qt; | |
0c7da84e | 4954 | |
bdf4ec93 RS |
4955 | if (!NILP (Vscroll_preserve_screen_position) |
4956 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4957 | { |
b73ea88e | 4958 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4959 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4960 | } |
101d1605 RS |
4961 | /* If we scrolled forward, put point enough lines down |
4962 | that it is outside the scroll margin. */ | |
4963 | else if (n > 0) | |
0c7da84e | 4964 | { |
101d1605 RS |
4965 | int top_margin; |
4966 | ||
4967 | if (this_scroll_margin > 0) | |
4968 | { | |
b73ea88e | 4969 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4970 | Fvertical_motion (make_number (this_scroll_margin), window); |
4971 | top_margin = PT; | |
4972 | } | |
4973 | else | |
4974 | top_margin = pos; | |
4975 | ||
4976 | if (top_margin <= opoint) | |
b73ea88e | 4977 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4978 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4979 | { |
b73ea88e | 4980 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4981 | Fvertical_motion (make_number (original_vpos), window); |
4982 | } | |
9317a85d | 4983 | else |
335406fc | 4984 | SET_PT (top_margin); |
0c7da84e | 4985 | } |
101d1605 | 4986 | else if (n < 0) |
7ab12479 | 4987 | { |
101d1605 RS |
4988 | int bottom_margin; |
4989 | ||
0c7da84e RS |
4990 | /* If we scrolled backward, put point near the end of the window |
4991 | but not within the scroll margin. */ | |
b73ea88e | 4992 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4993 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4994 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4995 | bottom_margin = PT; | |
4996 | else | |
4997 | bottom_margin = PT + 1; | |
4998 | ||
4999 | if (bottom_margin > opoint) | |
b73ea88e | 5000 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5001 | else |
101d1605 | 5002 | { |
5500c422 | 5003 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5004 | { |
b73ea88e | 5005 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5006 | Fvertical_motion (make_number (original_vpos), window); |
5007 | } | |
5008 | else | |
5009 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5010 | } |
7ab12479 JB |
5011 | } |
5012 | } | |
5013 | else | |
f8026fd8 JB |
5014 | { |
5015 | if (noerror) | |
5016 | return; | |
5017 | else | |
5018 | Fsignal (Qend_of_buffer, Qnil); | |
5019 | } | |
7ab12479 | 5020 | } |
5500c422 GM |
5021 | |
5022 | ||
5023 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5024 | screen-full which is defined as the height of the window minus | |
5025 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5026 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5027 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5028 | |
5029 | static void | |
5030 | scroll_command (n, direction) | |
5500c422 | 5031 | Lisp_Object n; |
7ab12479 JB |
5032 | int direction; |
5033 | { | |
331379bf | 5034 | int count = SPECPDL_INDEX (); |
7ab12479 | 5035 | |
5500c422 GM |
5036 | xassert (abs (direction) == 1); |
5037 | ||
5038 | /* If selected window's buffer isn't current, make it current for | |
5039 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5040 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5041 | { |
5042 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5043 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5044 | |
5045 | /* Make redisplay consider other windows than just selected_window. */ | |
5046 | ++windows_or_buffers_changed; | |
95605e15 | 5047 | } |
7ab12479 | 5048 | |
265a9e55 | 5049 | if (NILP (n)) |
d4e7cf01 | 5050 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5051 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5052 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5053 | else |
5054 | { | |
5055 | n = Fprefix_numeric_value (n); | |
101d1605 | 5056 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5057 | } |
95605e15 JB |
5058 | |
5059 | unbind_to (count, Qnil); | |
7ab12479 JB |
5060 | } |
5061 | ||
5062 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5063 | doc: /* Scroll text of current window upward ARG lines. |
5064 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5065 | A near full screen is `next-screen-context-lines' less than a full screen. |
5066 | Negative ARG means scroll downward. | |
5067 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5068 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5069 | (arg) | |
413430c5 | 5070 | Lisp_Object arg; |
7ab12479 | 5071 | { |
413430c5 | 5072 | scroll_command (arg, 1); |
7ab12479 JB |
5073 | return Qnil; |
5074 | } | |
5075 | ||
5076 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5077 | doc: /* Scroll text of current window down ARG lines. |
5078 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5079 | A near full screen is `next-screen-context-lines' less than a full screen. |
5080 | Negative ARG means scroll upward. | |
5081 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5082 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5083 | (arg) | |
413430c5 | 5084 | Lisp_Object arg; |
7ab12479 | 5085 | { |
413430c5 | 5086 | scroll_command (arg, -1); |
7ab12479 JB |
5087 | return Qnil; |
5088 | } | |
ccd0664b RS |
5089 | \f |
5090 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5091 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5092 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5093 | showing that buffer is used. |
5094 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5095 | specifies the window. This takes precedence over | |
5096 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5097 | () |
7ab12479 | 5098 | { |
ccd0664b | 5099 | Lisp_Object window; |
7ab12479 JB |
5100 | |
5101 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5102 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5103 | window = Vminibuf_scroll_window; |
5104 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5105 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5106 | { |
5107 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5108 | if (NILP (window)) |
53f76081 | 5109 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5110 | } |
5111 | else | |
dbc4e1c1 JB |
5112 | { |
5113 | /* Nothing specified; look for a neighboring window on the same | |
5114 | frame. */ | |
5115 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5116 | ||
5117 | if (EQ (window, selected_window)) | |
5118 | /* That didn't get us anywhere; look for a window on another | |
5119 | visible frame. */ | |
5120 | do | |
5121 | window = Fnext_window (window, Qnil, Qt); | |
5122 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5123 | && ! EQ (window, selected_window)); | |
5124 | } | |
5125 | ||
b7826503 | 5126 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5127 | |
5128 | if (EQ (window, selected_window)) | |
5129 | error ("There is no other window"); | |
5130 | ||
ccd0664b RS |
5131 | return window; |
5132 | } | |
5133 | ||
5134 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5135 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5136 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5137 | The next window is the one below the current one; or the one at the top | |
5138 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5139 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5140 | When calling from a program, supply as argument a number, nil, or `-'. | |
5141 | ||
fdb82f93 | 5142 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5143 | showing that buffer, popping the buffer up if necessary. |
5144 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5145 | specifies the window to scroll. This takes precedence over | |
5146 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5147 | (arg) |
d4e7cf01 | 5148 | Lisp_Object arg; |
ccd0664b | 5149 | { |
d4e7cf01 GM |
5150 | Lisp_Object window; |
5151 | struct window *w; | |
331379bf | 5152 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5153 | |
5154 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5155 | w = XWINDOW (window); |
7ab12479 JB |
5156 | |
5157 | /* Don't screw up if window_scroll gets an error. */ | |
5158 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5159 | ++windows_or_buffers_changed; |
7ab12479 JB |
5160 | |
5161 | Fset_buffer (w->buffer); | |
5162 | SET_PT (marker_position (w->pointm)); | |
5163 | ||
413430c5 | 5164 | if (NILP (arg)) |
d4e7cf01 | 5165 | window_scroll (window, 1, 1, 1); |
413430c5 | 5166 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5167 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5168 | else |
5169 | { | |
413430c5 EN |
5170 | if (CONSP (arg)) |
5171 | arg = Fcar (arg); | |
b7826503 | 5172 | CHECK_NUMBER (arg); |
101d1605 | 5173 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5174 | } |
5175 | ||
b73ea88e | 5176 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5177 | unbind_to (count, Qnil); |
7ab12479 JB |
5178 | |
5179 | return Qnil; | |
5180 | } | |
5181 | \f | |
dc297565 | 5182 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5183 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5184 | Default for ARG is window width minus 2. |
5185 | Value is the total amount of leftward horizontal scrolling in | |
5186 | effect after the change. | |
dc297565 RS |
5187 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5188 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5189 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5190 | by this function. This happens in an interactive call. */) |
5191 | (arg, set_minimum) | |
5192 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5193 | { |
c67fa410 GM |
5194 | Lisp_Object result; |
5195 | int hscroll; | |
5196 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5197 | |
265a9e55 | 5198 | if (NILP (arg)) |
949cf20f | 5199 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5200 | else |
5201 | arg = Fprefix_numeric_value (arg); | |
5202 | ||
c67fa410 GM |
5203 | hscroll = XINT (w->hscroll) + XINT (arg); |
5204 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5205 | ||
dc297565 | 5206 | if (!NILP (set_minimum)) |
c67fa410 GM |
5207 | w->min_hscroll = w->hscroll; |
5208 | ||
5209 | return result; | |
7ab12479 JB |
5210 | } |
5211 | ||
dc297565 | 5212 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5213 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5214 | Default for ARG is window width minus 2. |
5215 | Value is the total amount of leftward horizontal scrolling in | |
5216 | effect after the change. | |
dc297565 RS |
5217 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5218 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5219 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5220 | by this function. This happens in an interactive call. */) |
5221 | (arg, set_minimum) | |
a93563fd | 5222 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5223 | { |
c67fa410 GM |
5224 | Lisp_Object result; |
5225 | int hscroll; | |
5226 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5227 | |
265a9e55 | 5228 | if (NILP (arg)) |
949cf20f | 5229 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5230 | else |
5231 | arg = Fprefix_numeric_value (arg); | |
5232 | ||
c67fa410 GM |
5233 | hscroll = XINT (w->hscroll) - XINT (arg); |
5234 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5235 | |
dc297565 | 5236 | if (!NILP (set_minimum)) |
c67fa410 GM |
5237 | w->min_hscroll = w->hscroll; |
5238 | ||
5239 | return result; | |
7ab12479 JB |
5240 | } |
5241 | ||
fa832261 KS |
5242 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5243 | doc: /* Return the window which was selected when entering the minibuffer. | |
5244 | Returns nil, if current window is not a minibuffer window. */) | |
5245 | () | |
5246 | { | |
5247 | if (minibuf_level > 0 | |
5248 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5249 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5250 | return minibuf_selected_window; | |
5251 | ||
5252 | return Qnil; | |
5253 | } | |
5254 | ||
12c8b416 GM |
5255 | /* Value is the number of lines actually displayed in window W, |
5256 | as opposed to its height. */ | |
5257 | ||
5258 | static int | |
5259 | displayed_window_lines (w) | |
5260 | struct window *w; | |
5261 | { | |
5262 | struct it it; | |
5263 | struct text_pos start; | |
5264 | int height = window_box_height (w); | |
5265 | struct buffer *old_buffer; | |
5266 | int bottom_y; | |
5267 | ||
5268 | if (XBUFFER (w->buffer) != current_buffer) | |
5269 | { | |
5270 | old_buffer = current_buffer; | |
5271 | set_buffer_internal (XBUFFER (w->buffer)); | |
5272 | } | |
5273 | else | |
5274 | old_buffer = NULL; | |
5275 | ||
521b203e GM |
5276 | /* In case W->start is out of the accessible range, do something |
5277 | reasonable. This happens in Info mode when Info-scroll-down | |
5278 | calls (recenter -1) while W->start is 1. */ | |
5279 | if (XMARKER (w->start)->charpos < BEGV) | |
5280 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5281 | else if (XMARKER (w->start)->charpos > ZV) | |
5282 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5283 | else | |
5284 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5285 | ||
12c8b416 GM |
5286 | start_display (&it, w, start); |
5287 | move_it_vertically (&it, height); | |
c8bc6f65 | 5288 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5289 | |
1de65f51 RS |
5290 | /* rms: On a non-window display, |
5291 | the value of it.vpos at the bottom of the screen | |
5292 | seems to be 1 larger than window_box_height (w). | |
5293 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5294 | when ZV is on the last screen line | |
5295 | moves to the previous screen line instead of the last one. */ | |
5296 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5297 | height++; | |
5298 | ||
12c8b416 GM |
5299 | /* Add in empty lines at the bottom of the window. */ |
5300 | if (bottom_y < height) | |
5301 | { | |
949cf20f | 5302 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5303 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5304 | } |
5305 | ||
c8bc6f65 GM |
5306 | if (old_buffer) |
5307 | set_buffer_internal (old_buffer); | |
5308 | ||
12c8b416 GM |
5309 | return it.vpos; |
5310 | } | |
5311 | ||
5312 | ||
7ab12479 | 5313 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5314 | doc: /* Center point in window and redisplay frame. |
5315 | With prefix argument ARG, recenter putting point on screen line ARG | |
5316 | relative to the current window. If ARG is negative, it counts up from the | |
5317 | bottom of the window. (ARG should be less than the height of the window.) | |
5318 | ||
5319 | If ARG is omitted or nil, erase the entire frame and then | |
5320 | redraw with point in the center of the current window. | |
5321 | Just C-u as prefix means put point in the center of the window | |
5322 | and redisplay normally--don't erase and redraw the frame. */) | |
5323 | (arg) | |
413430c5 | 5324 | register Lisp_Object arg; |
7ab12479 | 5325 | { |
6df47b59 | 5326 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5327 | struct buffer *buf = XBUFFER (w->buffer); |
5328 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5329 | int center_p = 0; |
5330 | int charpos, bytepos; | |
f6b43440 RS |
5331 | int iarg; |
5332 | int this_scroll_margin; | |
7ab12479 | 5333 | |
0fa5d25b RS |
5334 | /* If redisplay is suppressed due to an error, try again. */ |
5335 | obuf->display_error_modiff = 0; | |
5336 | ||
413430c5 | 5337 | if (NILP (arg)) |
7ab12479 | 5338 | { |
f02d6d5c KH |
5339 | int i; |
5340 | ||
5341 | /* Invalidate pixel data calculated for all compositions. */ | |
5342 | for (i = 0; i < n_compositions; i++) | |
5343 | composition_table[i]->font = NULL; | |
7ab12479 | 5344 | |
527b6458 | 5345 | Fredraw_frame (w->frame); |
44fa5b1e | 5346 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 5347 | center_p = 1; |
7ab12479 | 5348 | } |
413430c5 | 5349 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5350 | center_p = 1; |
7ab12479 JB |
5351 | else |
5352 | { | |
413430c5 | 5353 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5354 | CHECK_NUMBER (arg); |
ae12ecd7 | 5355 | iarg = XINT (arg); |
7ab12479 JB |
5356 | } |
5357 | ||
478292ed | 5358 | set_buffer_internal (buf); |
7ab12479 | 5359 | |
f6b43440 RS |
5360 | /* Do this after making BUF current |
5361 | in case scroll_margin is buffer-local. */ | |
5362 | this_scroll_margin = max (0, scroll_margin); | |
5363 | this_scroll_margin = min (this_scroll_margin, | |
5364 | XFASTINT (w->total_lines) / 4); | |
5365 | ||
521b203e | 5366 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5367 | have variable-height lines and centering point on the basis of |
5368 | line counts would lead to strange effects. */ | |
521b203e | 5369 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5370 | { |
6df47b59 GM |
5371 | if (center_p) |
5372 | { | |
521b203e GM |
5373 | struct it it; |
5374 | struct text_pos pt; | |
177c0ea7 | 5375 | |
521b203e GM |
5376 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5377 | start_display (&it, w, pt); | |
f204989e | 5378 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5379 | charpos = IT_CHARPOS (it); |
5380 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5381 | } |
f6b43440 | 5382 | else if (iarg < 0) |
6df47b59 | 5383 | { |
521b203e GM |
5384 | struct it it; |
5385 | struct text_pos pt; | |
f6b43440 | 5386 | int nlines = -iarg; |
f204989e KS |
5387 | int extra_line_spacing; |
5388 | int h = window_box_height (w); | |
177c0ea7 | 5389 | |
f6b43440 RS |
5390 | iarg = - max (-iarg, this_scroll_margin); |
5391 | ||
521b203e GM |
5392 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5393 | start_display (&it, w, pt); | |
f204989e KS |
5394 | |
5395 | /* Be sure we have the exact height of the full line containing PT. */ | |
5396 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5397 | |
d466fa4d | 5398 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5399 | height minus what's displayed in the line containing PT, |
5400 | and the lines below. */ | |
f204989e KS |
5401 | it.current_y = 0; |
5402 | it.vpos = 0; | |
d466fa4d GM |
5403 | move_it_by_lines (&it, nlines, 1); |
5404 | ||
f204989e KS |
5405 | if (it.vpos == nlines) |
5406 | h -= it.current_y; | |
5407 | else | |
5408 | { | |
5409 | /* Last line has no newline */ | |
5410 | h -= line_bottom_y (&it); | |
5411 | it.vpos++; | |
5412 | } | |
5413 | ||
5414 | /* Don't reserve space for extra line spacing of last line. */ | |
5415 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5416 | |
5417 | /* If we can't move down NLINES lines because we hit | |
5418 | the end of the buffer, count in some empty lines. */ | |
5419 | if (it.vpos < nlines) | |
f204989e KS |
5420 | { |
5421 | nlines -= it.vpos; | |
5422 | extra_line_spacing = it.extra_line_spacing; | |
5423 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5424 | } | |
5425 | if (h <= 0) | |
5426 | return Qnil; | |
201c831a | 5427 | |
f204989e | 5428 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5429 | start_display (&it, w, pt); |
f204989e KS |
5430 | it.current_y = 0; |
5431 | move_it_vertically_backward (&it, h); | |
5432 | ||
5433 | /* If extra line spacing is present, we may move too far | |
5434 | back. This causes the last line to be only partially | |
5435 | visible (which triggers redisplay to recenter that line | |
5436 | in the middle), so move forward. | |
5437 | But ignore extra line spacing on last line, as it is not | |
5438 | considered to be part of the visible height of the line. | |
5439 | */ | |
5440 | h += extra_line_spacing; | |
5441 | while (-it.current_y > h) | |
5442 | move_it_by_lines (&it, 1, 1); | |
5443 | ||
521b203e GM |
5444 | charpos = IT_CHARPOS (it); |
5445 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5446 | } |
521b203e GM |
5447 | else |
5448 | { | |
5449 | struct position pos; | |
f6b43440 | 5450 | |
f6b43440 RS |
5451 | iarg = max (iarg, this_scroll_margin); |
5452 | ||
5453 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5454 | charpos = pos.bufpos; |
5455 | bytepos = pos.bytepos; | |
5456 | } | |
5457 | } | |
5458 | else | |
5459 | { | |
5460 | struct position pos; | |
5461 | int ht = window_internal_height (w); | |
5462 | ||
5463 | if (center_p) | |
a4429c5b | 5464 | iarg = ht / 2; |
f567c488 KS |
5465 | else if (iarg < 0) |
5466 | iarg += ht; | |
f6b43440 RS |
5467 | |
5468 | /* Don't let it get into the margin at either top or bottom. */ | |
5469 | iarg = max (iarg, this_scroll_margin); | |
5470 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5471 | |
f6b43440 | 5472 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5473 | charpos = pos.bufpos; |
5474 | bytepos = pos.bytepos; | |
5475 | } | |
5476 | ||
5477 | /* Set the new window start. */ | |
5478 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5479 | w->window_end_valid = Qnil; |
177c0ea7 | 5480 | |
95605b1b RS |
5481 | w->optional_new_start = Qt; |
5482 | ||
6df47b59 GM |
5483 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5484 | w->start_at_line_beg = Qt; | |
5485 | else | |
5486 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5487 | |
478292ed | 5488 | set_buffer_internal (obuf); |
7ab12479 JB |
5489 | return Qnil; |
5490 | } | |
b7617575 GM |
5491 | |
5492 | ||
81fe0836 | 5493 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5494 | 0, 1, 0, |
5495 | doc: /* Return the height in lines of the text display area of WINDOW. | |
5496 | This doesn't include the mode-line (or header-line if any) or any | |
5497 | partial-height lines in the text display area. */) | |
5498 | (window) | |
81fe0836 MB |
5499 | Lisp_Object window; |
5500 | { | |
5501 | struct window *w = decode_window (window); | |
5502 | int pixel_height = window_box_height (w); | |
949cf20f | 5503 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5504 | return make_number (line_height); |
5505 | } | |
5506 | ||
5507 | ||
7ab12479 JB |
5508 | \f |
5509 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5510 | 1, 1, "P", |
5511 | doc: /* Position point relative to window. | |
5512 | With no argument, position point at center of window. | |
5513 | An argument specifies vertical position within the window; | |
5514 | zero means top of window, negative means relative to bottom of window. */) | |
5515 | (arg) | |
b7617575 | 5516 | Lisp_Object arg; |
7ab12479 | 5517 | { |
b7617575 GM |
5518 | struct window *w = XWINDOW (selected_window); |
5519 | int lines, start; | |
540b6aa0 | 5520 | Lisp_Object window; |
f6b43440 RS |
5521 | #if 0 |
5522 | int this_scroll_margin; | |
5523 | #endif | |
7ab12479 | 5524 | |
b7617575 | 5525 | window = selected_window; |
7ab12479 JB |
5526 | start = marker_position (w->start); |
5527 | if (start < BEGV || start > ZV) | |
5528 | { | |
b7617575 | 5529 | int height = window_internal_height (w); |
cd2be1dd | 5530 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5531 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5532 | w->start_at_line_beg = Fbolp (); |
5533 | w->force_start = Qt; | |
5534 | } | |
5535 | else | |
b73ea88e | 5536 | Fgoto_char (w->start); |
7ab12479 | 5537 | |
b7617575 | 5538 | lines = displayed_window_lines (w); |
f6b43440 RS |
5539 | |
5540 | #if 0 | |
5541 | this_scroll_margin = max (0, scroll_margin); | |
5542 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5543 | #endif | |
5544 | ||
b7617575 GM |
5545 | if (NILP (arg)) |
5546 | XSETFASTINT (arg, lines / 2); | |
5547 | else | |
5548 | { | |
f6b43440 RS |
5549 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5550 | ||
5551 | if (iarg < 0) | |
5552 | iarg = iarg + lines; | |
5553 | ||
5554 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5555 | to a place inside the scroll margins (which would cause the | |
5556 | next redisplay to scroll). I wrote this code, but then concluded | |
5557 | it is probably better not to install it. However, it is here | |
5558 | inside #if 0 so as not to lose it. -- rms. */ | |
5559 | ||
5560 | /* Don't let it get into the margin at either top or bottom. */ | |
5561 | iarg = max (iarg, this_scroll_margin); | |
5562 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5563 | #endif | |
5564 | ||
5565 | arg = make_number (iarg); | |
b7617575 GM |
5566 | } |
5567 | ||
c8bc6f65 | 5568 | /* Skip past a partially visible first line. */ |
163784df | 5569 | if (w->vscroll) |
163784df MB |
5570 | XSETINT (arg, XINT (arg) + 1); |
5571 | ||
540b6aa0 | 5572 | return Fvertical_motion (arg, window); |
7ab12479 | 5573 | } |
5500c422 GM |
5574 | |
5575 | ||
7ab12479 | 5576 | \f |
5500c422 GM |
5577 | /*********************************************************************** |
5578 | Window Configuration | |
5579 | ***********************************************************************/ | |
5580 | ||
7ab12479 JB |
5581 | struct save_window_data |
5582 | { | |
f5ccc0cc | 5583 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 5584 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 5585 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 5586 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 5587 | Lisp_Object selected_frame; |
7ab12479 JB |
5588 | Lisp_Object current_window; |
5589 | Lisp_Object current_buffer; | |
5590 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5591 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5592 | Lisp_Object root_window; |
bdc727bf | 5593 | Lisp_Object focus_frame; |
756b6edc RS |
5594 | /* Record the values of window-min-width and window-min-height |
5595 | so that window sizes remain consistent with them. */ | |
5596 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
5597 | /* A vector, each of whose elements is a struct saved_window |
5598 | for one window. */ | |
7ab12479 JB |
5599 | Lisp_Object saved_windows; |
5600 | }; | |
ff06df24 | 5601 | |
cbff28e8 | 5602 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5603 | struct saved_window |
ea68264b GM |
5604 | { |
5605 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
5606 | EMACS_INT size_from_Lisp_Vector_struct; | |
5607 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 5608 | |
ea68264b GM |
5609 | Lisp_Object window; |
5610 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5611 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5612 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5613 | Lisp_Object parent, prev; |
5614 | Lisp_Object start_at_line_beg; | |
5615 | Lisp_Object display_table; | |
949cf20f KS |
5616 | Lisp_Object orig_top_line, orig_total_lines; |
5617 | Lisp_Object left_margin_cols, right_margin_cols; | |
5618 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5619 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
ea68264b GM |
5620 | }; |
5621 | ||
7ab12479 JB |
5622 | #define SAVED_WINDOW_N(swv,n) \ |
5623 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5624 | ||
5625 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5626 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5627 | (object) | |
413430c5 | 5628 | Lisp_Object object; |
7ab12479 | 5629 | { |
413430c5 | 5630 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
5631 | return Qt; |
5632 | return Qnil; | |
5633 | } | |
5634 | ||
3f8ab7bd | 5635 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5636 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5637 | (config) | |
3f8ab7bd RS |
5638 | Lisp_Object config; |
5639 | { | |
5640 | register struct save_window_data *data; | |
5641 | struct Lisp_Vector *saved_windows; | |
5642 | ||
5643 | if (! WINDOW_CONFIGURATIONP (config)) | |
5644 | wrong_type_argument (Qwindow_configuration_p, config); | |
5645 | ||
5646 | data = (struct save_window_data *) XVECTOR (config); | |
5647 | saved_windows = XVECTOR (data->saved_windows); | |
5648 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5649 | } | |
5650 | ||
d5b2799e | 5651 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5652 | Sset_window_configuration, 1, 1, 0, |
5653 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5654 | CONFIGURATION must be a value previously returned | |
5655 | by `current-window-configuration' (which see). | |
5656 | If CONFIGURATION was made from a frame that is now deleted, | |
5657 | only frame-independent values can be restored. In this case, | |
5658 | the return value is nil. Otherwise the value is t. */) | |
5659 | (configuration) | |
2f83aebe | 5660 | Lisp_Object configuration; |
7ab12479 | 5661 | { |
7ab12479 JB |
5662 | register struct save_window_data *data; |
5663 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5664 | Lisp_Object new_current_buffer; |
fd482be5 | 5665 | Lisp_Object frame; |
44fa5b1e | 5666 | FRAME_PTR f; |
72695e47 | 5667 | int old_point = -1; |
7ab12479 | 5668 | |
017b2bad | 5669 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 5670 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 5671 | |
2f83aebe | 5672 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5673 | saved_windows = XVECTOR (data->saved_windows); |
5674 | ||
7ab12479 | 5675 | new_current_buffer = data->current_buffer; |
265a9e55 | 5676 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5677 | new_current_buffer = Qnil; |
72695e47 | 5678 | else |
73cadfc1 DK |
5679 | { |
5680 | if (XBUFFER (new_current_buffer) == current_buffer) | |
5681 | old_point = PT; | |
5682 | else | |
203eb0aa SM |
5683 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5684 | point in new_current_buffer as of the last time this buffer was | |
5685 | used. This can be non-deterministic since it can be changed by | |
5686 | things like jit-lock by mere temporary selection of some random | |
5687 | window that happens to show this buffer. | |
5688 | So if possible we want this arbitrary choice of "which point" to | |
5689 | be the one from the to-be-selected-window so as to prevent this | |
5690 | window's cursor from being copied from another window. */ | |
5691 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5692 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5693 | && !EQ (selected_window, data->current_window)) | |
5694 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5695 | else | |
5696 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5697 | } |
7ab12479 | 5698 | |
fd482be5 JB |
5699 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5700 | f = XFRAME (frame); | |
177c0ea7 | 5701 | |
fd482be5 JB |
5702 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5703 | However, there is other stuff we should still try to do below. */ | |
5704 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5705 | { |
fd482be5 JB |
5706 | register struct window *w; |
5707 | register struct saved_window *p; | |
5500c422 GM |
5708 | struct window *root_window; |
5709 | struct window **leaf_windows; | |
5710 | int n_leaf_windows; | |
c4280705 | 5711 | int k, i, n; |
fd482be5 JB |
5712 | |
5713 | /* If the frame has been resized since this window configuration was | |
5714 | made, we change the frame to the size specified in the | |
5715 | configuration, restore the configuration, and then resize it | |
5716 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5717 | int previous_frame_lines = FRAME_LINES (f); |
5718 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5719 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5720 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5721 | |
d2b35234 RS |
5722 | /* The mouse highlighting code could get screwed up |
5723 | if it runs during this. */ | |
5724 | BLOCK_INPUT; | |
5725 | ||
949cf20f KS |
5726 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
5727 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
5728 | change_frame_size (f, XFASTINT (data->frame_lines), | |
5729 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 5730 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
5731 | if (XFASTINT (data->frame_menu_bar_lines) |
5732 | != previous_frame_menu_bar_lines) | |
f8ad443a | 5733 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 5734 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5735 | if (XFASTINT (data->frame_tool_bar_lines) |
5736 | != previous_frame_tool_bar_lines) | |
5737 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 5738 | #endif |
217f2871 | 5739 | #endif |
fd482be5 | 5740 | |
a46c0153 RS |
5741 | /* "Swap out" point from the selected window's buffer |
5742 | into the window itself. (Normally the pointm of the selected | |
5743 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5744 | restoring the window contents, and prevent it from |
5745 | being done later on when we select a new window. */ | |
596ae0cf RS |
5746 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5747 | { | |
5748 | w = XWINDOW (selected_window); | |
5749 | set_marker_both (w->pointm, | |
5750 | w->buffer, | |
5751 | BUF_PT (XBUFFER (w->buffer)), | |
5752 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5753 | } | |
5754 | ||
fd482be5 | 5755 | windows_or_buffers_changed++; |
29aeee73 | 5756 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5757 | |
5500c422 | 5758 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5759 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
5760 | really like to do is to free only those matrices not reused |
5761 | below. */ | |
5762 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
5763 | leaf_windows | |
5764 | = (struct window **) alloca (count_windows (root_window) | |
5765 | * sizeof (struct window *)); | |
5766 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5767 | ||
756b6edc RS |
5768 | /* Temporarily avoid any problems with windows that are smaller |
5769 | than they are supposed to be. */ | |
5770 | window_min_height = 1; | |
5771 | window_min_width = 1; | |
5772 | ||
fd482be5 JB |
5773 | /* Kludge Alert! |
5774 | Mark all windows now on frame as "deleted". | |
5775 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5776 | |
fd482be5 JB |
5777 | Save their current buffers in their height fields, since we may |
5778 | need it later, if a buffer saved in the configuration is now | |
5779 | dead. */ | |
5780 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
5781 | ||
5782 | for (k = 0; k < saved_windows->size; k++) | |
5783 | { | |
5784 | p = SAVED_WINDOW_N (saved_windows, k); | |
5785 | w = XWINDOW (p->window); | |
5786 | w->next = Qnil; | |
7ab12479 | 5787 | |
fd482be5 JB |
5788 | if (!NILP (p->parent)) |
5789 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5790 | XFASTINT (p->parent))->window; | |
5791 | else | |
5792 | w->parent = Qnil; | |
7ab12479 | 5793 | |
fd482be5 | 5794 | if (!NILP (p->prev)) |
7ab12479 | 5795 | { |
fd482be5 JB |
5796 | w->prev = SAVED_WINDOW_N (saved_windows, |
5797 | XFASTINT (p->prev))->window; | |
5798 | XWINDOW (w->prev)->next = p->window; | |
5799 | } | |
5800 | else | |
5801 | { | |
5802 | w->prev = Qnil; | |
5803 | if (!NILP (w->parent)) | |
5804 | { | |
949cf20f | 5805 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5806 | { |
5807 | XWINDOW (w->parent)->vchild = p->window; | |
5808 | XWINDOW (w->parent)->hchild = Qnil; | |
5809 | } | |
5810 | else | |
5811 | { | |
5812 | XWINDOW (w->parent)->hchild = p->window; | |
5813 | XWINDOW (w->parent)->vchild = Qnil; | |
5814 | } | |
5815 | } | |
5816 | } | |
5817 | ||
5818 | /* If we squirreled away the buffer in the window's height, | |
5819 | restore it now. */ | |
949cf20f KS |
5820 | if (BUFFERP (w->total_lines)) |
5821 | w->buffer = w->total_lines; | |
5822 | w->left_col = p->left_col; | |
5823 | w->top_line = p->top_line; | |
5824 | w->total_cols = p->total_cols; | |
5825 | w->total_lines = p->total_lines; | |
fd482be5 | 5826 | w->hscroll = p->hscroll; |
ea68264b | 5827 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5828 | w->display_table = p->display_table; |
949cf20f KS |
5829 | w->orig_top_line = p->orig_top_line; |
5830 | w->orig_total_lines = p->orig_total_lines; | |
5831 | w->left_margin_cols = p->left_margin_cols; | |
5832 | w->right_margin_cols = p->right_margin_cols; | |
5833 | w->left_fringe_width = p->left_fringe_width; | |
5834 | w->right_fringe_width = p->right_fringe_width; | |
5835 | w->fringes_outside_margins = p->fringes_outside_margins; | |
5836 | w->scroll_bar_width = p->scroll_bar_width; | |
5837 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
d834a2e9 | 5838 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5839 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5840 | |
5841 | /* Reinstall the saved buffer and pointers into it. */ | |
5842 | if (NILP (p->buffer)) | |
5843 | w->buffer = p->buffer; | |
5844 | else | |
5845 | { | |
5846 | if (!NILP (XBUFFER (p->buffer)->name)) | |
5847 | /* If saved buffer is alive, install it. */ | |
5848 | { | |
5849 | w->buffer = p->buffer; | |
5850 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
5851 | set_marker_restricted (w->start, p->start, w->buffer); |
5852 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 5853 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 5854 | p->mark, w->buffer); |
fd482be5 JB |
5855 | |
5856 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
5857 | restore the location of point in the buffer which was |
5858 | current when the window configuration was recorded. */ | |
6b54027b RS |
5859 | if (!EQ (p->buffer, new_current_buffer) |
5860 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
5861 | Fgoto_char (w->pointm); |
5862 | } | |
52a68e98 RS |
5863 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
5864 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 5865 | { |
fd482be5 JB |
5866 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
5867 | /* This will set the markers to beginning of visible | |
5868 | range. */ | |
5869 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5870 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
5871 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
5872 | } |
5873 | else | |
fd482be5 | 5874 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 5875 | are real. */ |
7ab12479 | 5876 | { |
fd482be5 JB |
5877 | /* Set window markers at start of visible range. */ |
5878 | if (XMARKER (w->start)->buffer == 0) | |
5879 | set_marker_restricted (w->start, make_number (0), | |
5880 | w->buffer); | |
5881 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
5882 | set_marker_restricted_both (w->pointm, w->buffer, |
5883 | BUF_PT (XBUFFER (w->buffer)), | |
5884 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 5885 | w->start_at_line_beg = Qt; |
7ab12479 JB |
5886 | } |
5887 | } | |
5888 | } | |
9ace597f | 5889 | |
fd482be5 | 5890 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
5891 | /* Prevent "swapping out point" in the old selected window |
5892 | using the buffer that has been restored into it. | |
a46c0153 | 5893 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 5894 | selected_window = Qnil; |
a46c0153 RS |
5895 | |
5896 | /* Arrange *not* to restore point in the buffer that was | |
5897 | current when the window configuration was saved. */ | |
243a5ce6 RS |
5898 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5899 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5900 | make_number (old_point), |
243a5ce6 | 5901 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5902 | |
14d87dc9 | 5903 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
5904 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
5905 | = selected_window; | |
7ab12479 | 5906 | |
db269683 | 5907 | if (NILP (data->focus_frame) |
017b2bad | 5908 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5909 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5910 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5911 | |
fd482be5 JB |
5912 | #if 0 /* I don't understand why this is needed, and it causes problems |
5913 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5914 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5915 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5916 | 0, 0); |
fd482be5 JB |
5917 | #endif |
5918 | ||
5919 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
5920 | if (previous_frame_lines != FRAME_LINES (f) |
5921 | || previous_frame_cols != FRAME_COLS (f)) | |
5922 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5923 | 0, 0, 0); |
e3678b64 | 5924 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5925 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5926 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5927 | make_number (0)); | |
4314246f | 5928 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5929 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5930 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5931 | make_number (0)); | |
4314246f | 5932 | #endif |
217f2871 | 5933 | #endif |
d2b35234 | 5934 | |
5500c422 | 5935 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5936 | for (i = n = 0; i < n_leaf_windows; ++i) |
5937 | { | |
5938 | if (NILP (leaf_windows[i]->buffer)) | |
5939 | { | |
5940 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 5941 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
5942 | && NILP (leaf_windows[i]->vchild)); |
5943 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5944 | } |
5945 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5946 | ++n; | |
5947 | } | |
177c0ea7 | 5948 | |
5500c422 GM |
5949 | adjust_glyphs (f); |
5950 | ||
d2b35234 | 5951 | UNBLOCK_INPUT; |
756b6edc | 5952 | |
478292ed RS |
5953 | /* Fselect_window will have made f the selected frame, so we |
5954 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5955 | selected window too, but that doesn't make the call to | |
5956 | Fselect_window above totally superfluous; it still sets f's | |
5957 | selected window. */ | |
5958 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5959 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5960 | |
5961 | if (! NILP (Vwindow_configuration_change_hook) | |
5962 | && ! NILP (Vrun_hooks)) | |
5963 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5964 | } | |
bdc727bf JB |
5965 | |
5966 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5967 | Fset_buffer (new_current_buffer); |
bdc727bf | 5968 | |
478292ed RS |
5969 | /* Restore the minimum heights recorded in the configuration. */ |
5970 | window_min_height = XINT (data->min_height); | |
5971 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5972 | |
478292ed | 5973 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5974 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5975 | |
3f8ab7bd | 5976 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5977 | } |
5978 | ||
44fa5b1e | 5979 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5980 | by setting their buffers to nil. */ |
5981 | ||
fd482be5 | 5982 | void |
7ab12479 JB |
5983 | delete_all_subwindows (w) |
5984 | register struct window *w; | |
5985 | { | |
265a9e55 | 5986 | if (!NILP (w->next)) |
7ab12479 | 5987 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5988 | if (!NILP (w->vchild)) |
7ab12479 | 5989 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5990 | if (!NILP (w->hchild)) |
7ab12479 | 5991 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 5992 | |
949cf20f | 5993 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 5994 | |
86e48436 RS |
5995 | if (!NILP (w->buffer)) |
5996 | unshow_buffer (w); | |
5997 | ||
605be8af JB |
5998 | /* We set all three of these fields to nil, to make sure that we can |
5999 | distinguish this dead window from any live window. Live leaf | |
6000 | windows will have buffer set, and combination windows will have | |
6001 | vchild or hchild set. */ | |
6002 | w->buffer = Qnil; | |
6003 | w->vchild = Qnil; | |
6004 | w->hchild = Qnil; | |
acf70840 GM |
6005 | |
6006 | Vwindow_list = Qnil; | |
7ab12479 JB |
6007 | } |
6008 | \f | |
6009 | static int | |
6010 | count_windows (window) | |
6011 | register struct window *window; | |
6012 | { | |
6013 | register int count = 1; | |
265a9e55 | 6014 | if (!NILP (window->next)) |
7ab12479 | 6015 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6016 | if (!NILP (window->vchild)) |
7ab12479 | 6017 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6018 | if (!NILP (window->hchild)) |
7ab12479 JB |
6019 | count += count_windows (XWINDOW (window->hchild)); |
6020 | return count; | |
6021 | } | |
6022 | ||
5500c422 | 6023 | |
177c0ea7 | 6024 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6025 | Value is last index + 1. */ |
6026 | ||
6027 | static int | |
6028 | get_leaf_windows (w, flat, i) | |
6029 | struct window *w; | |
6030 | struct window **flat; | |
6031 | int i; | |
6032 | { | |
6033 | while (w) | |
6034 | { | |
6035 | if (!NILP (w->hchild)) | |
6036 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6037 | else if (!NILP (w->vchild)) | |
6038 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6039 | else |
5500c422 GM |
6040 | flat[i++] = w; |
6041 | ||
6042 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6043 | } | |
6044 | ||
6045 | return i; | |
6046 | } | |
6047 | ||
6048 | ||
6049 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6050 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6051 | can be returned. */ | |
6052 | ||
6053 | struct glyph * | |
6054 | get_phys_cursor_glyph (w) | |
6055 | struct window *w; | |
6056 | { | |
6057 | struct glyph_row *row; | |
6058 | struct glyph *glyph; | |
6059 | ||
6060 | if (w->phys_cursor.vpos >= 0 | |
6061 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6062 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6063 | row->enabled_p) | |
6064 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6065 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6066 | else | |
6067 | glyph = NULL; | |
6068 | ||
6069 | return glyph; | |
6070 | } | |
6071 | ||
6072 | ||
7ab12479 JB |
6073 | static int |
6074 | save_window_save (window, vector, i) | |
6075 | Lisp_Object window; | |
6076 | struct Lisp_Vector *vector; | |
6077 | int i; | |
6078 | { | |
6079 | register struct saved_window *p; | |
6080 | register struct window *w; | |
6081 | register Lisp_Object tem; | |
6082 | ||
265a9e55 | 6083 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6084 | { |
6085 | p = SAVED_WINDOW_N (vector, i); | |
6086 | w = XWINDOW (window); | |
6087 | ||
2a1893f4 | 6088 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6089 | p->window = window; |
6090 | p->buffer = w->buffer; | |
949cf20f KS |
6091 | p->left_col = w->left_col; |
6092 | p->top_line = w->top_line; | |
6093 | p->total_cols = w->total_cols; | |
6094 | p->total_lines = w->total_lines; | |
7ab12479 | 6095 | p->hscroll = w->hscroll; |
ea68264b | 6096 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6097 | p->display_table = w->display_table; |
949cf20f KS |
6098 | p->orig_top_line = w->orig_top_line; |
6099 | p->orig_total_lines = w->orig_total_lines; | |
6100 | p->left_margin_cols = w->left_margin_cols; | |
6101 | p->right_margin_cols = w->right_margin_cols; | |
6102 | p->left_fringe_width = w->left_fringe_width; | |
6103 | p->right_fringe_width = w->right_fringe_width; | |
6104 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6105 | p->scroll_bar_width = w->scroll_bar_width; | |
6106 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
265a9e55 | 6107 | if (!NILP (w->buffer)) |
7ab12479 JB |
6108 | { |
6109 | /* Save w's value of point in the window configuration. | |
6110 | If w is the selected window, then get the value of point | |
6111 | from the buffer; pointm is garbage in the selected window. */ | |
6112 | if (EQ (window, selected_window)) | |
6113 | { | |
6114 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6115 | set_marker_both (p->pointm, w->buffer, |
6116 | BUF_PT (XBUFFER (w->buffer)), | |
6117 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6118 | } |
6119 | else | |
eeb82665 | 6120 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6121 | |
eeb82665 | 6122 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6123 | p->start_at_line_beg = w->start_at_line_beg; |
6124 | ||
6125 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6126 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6127 | } |
6128 | else | |
6129 | { | |
6130 | p->pointm = Qnil; | |
6131 | p->start = Qnil; | |
6132 | p->mark = Qnil; | |
6133 | p->start_at_line_beg = Qnil; | |
6134 | } | |
6135 | ||
265a9e55 | 6136 | if (NILP (w->parent)) |
7ab12479 JB |
6137 | p->parent = Qnil; |
6138 | else | |
6139 | p->parent = XWINDOW (w->parent)->temslot; | |
6140 | ||
265a9e55 | 6141 | if (NILP (w->prev)) |
7ab12479 JB |
6142 | p->prev = Qnil; |
6143 | else | |
6144 | p->prev = XWINDOW (w->prev)->temslot; | |
6145 | ||
265a9e55 | 6146 | if (!NILP (w->vchild)) |
7ab12479 | 6147 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6148 | if (!NILP (w->hchild)) |
7ab12479 JB |
6149 | i = save_window_save (w->hchild, vector, i); |
6150 | } | |
6151 | ||
6152 | return i; | |
6153 | } | |
6154 | ||
a0d76c27 | 6155 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6156 | Scurrent_window_configuration, 0, 1, 0, |
6157 | doc: /* Return an object representing the current window configuration of FRAME. | |
6158 | If FRAME is nil or omitted, use the selected frame. | |
6159 | This describes the number of windows, their sizes and current buffers, | |
6160 | and for each displayed buffer, where display starts, and the positions of | |
6161 | point and mark. An exception is made for point in the current buffer: | |
6162 | its value is -not- saved. | |
6163 | This also records the currently selected frame, and FRAME's focus | |
6164 | redirection (see `redirect-frame-focus'). */) | |
6165 | (frame) | |
44fa5b1e | 6166 | Lisp_Object frame; |
7ab12479 JB |
6167 | { |
6168 | register Lisp_Object tem; | |
6169 | register int n_windows; | |
6170 | register struct save_window_data *data; | |
da2792e0 | 6171 | register struct Lisp_Vector *vec; |
7ab12479 | 6172 | register int i; |
44fa5b1e | 6173 | FRAME_PTR f; |
43bad991 | 6174 | |
44fa5b1e | 6175 | if (NILP (frame)) |
1ae1a37d | 6176 | frame = selected_frame; |
b7826503 | 6177 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6178 | f = XFRAME (frame); |
7ab12479 | 6179 | |
44fa5b1e | 6180 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 6181 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
6182 | data = (struct save_window_data *)vec; |
6183 | ||
949cf20f KS |
6184 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
6185 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 6186 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 6187 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 6188 | data->selected_frame = selected_frame; |
44fa5b1e | 6189 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6190 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6191 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6192 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6193 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6194 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
6195 | XSETINT (data->min_height, window_min_height); |
6196 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
6197 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6198 | data->saved_windows = tem; | |
6199 | for (i = 0; i < n_windows; i++) | |
6200 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6201 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6202 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6203 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6204 | return (tem); |
6205 | } | |
6206 | ||
6207 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6208 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6209 | doc: /* Execute BODY, preserving window sizes and contents. |
6210 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6211 | Restore which buffer appears in which window, where display starts, |
6212 | and the value of point and mark for each window. | |
6213 | Also restore the choice of selected window. | |
6214 | Also restore which buffer is current. | |
6924dda6 MB |
6215 | Does not restore the value of point in current buffer. |
6216 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 6217 | (args) |
7ab12479 JB |
6218 | Lisp_Object args; |
6219 | { | |
6220 | register Lisp_Object val; | |
aed13378 | 6221 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6222 | |
6223 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6224 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6225 | val = Fprogn (args); |
6226 | return unbind_to (count, val); | |
6227 | } | |
5500c422 | 6228 | |
94e16dd5 KS |
6229 | |
6230 | \f | |
6231 | /*********************************************************************** | |
6232 | Window Split Tree | |
6233 | ***********************************************************************/ | |
6234 | ||
6235 | static Lisp_Object | |
c16e1cc3 | 6236 | window_tree (w) |
94e16dd5 KS |
6237 | struct window *w; |
6238 | { | |
6239 | Lisp_Object tail = Qnil; | |
6240 | Lisp_Object result = Qnil; | |
6241 | ||
6242 | while (w) | |
6243 | { | |
6244 | Lisp_Object wn; | |
6245 | ||
6246 | XSETWINDOW (wn, w); | |
6247 | if (!NILP (w->hchild)) | |
6248 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6249 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6250 | else if (!NILP (w->vchild)) |
6251 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6252 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6253 | |
6254 | if (NILP (result)) | |
6255 | { | |
6256 | result = tail = Fcons (wn, Qnil); | |
6257 | } | |
6258 | else | |
6259 | { | |
6260 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6261 | tail = XCDR (tail); | |
6262 | } | |
6263 | ||
6264 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6265 | } | |
6266 | ||
6267 | return result; | |
6268 | } | |
6269 | ||
6270 | ||
6271 | ||
c16e1cc3 | 6272 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6273 | 0, 1, 0, |
c16e1cc3 | 6274 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6275 | |
6276 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6277 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6278 | is the frame's minibuffer window. |
6279 | ||
6280 | If the root window is not split, ROOT is the root window itself. | |
6281 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
6282 | horisontal split, and t for a vertical split, EDGES gives the combined | |
6283 | size and position of the subwindows in the split, and the rest of the | |
6284 | elements are the subwindows in the split. Each of the subwindows may | |
6285 | again be a window or a list representing a window split, and so on. | |
6286 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6287 | ||
6288 | If FRAME is nil or omitted, return information on the currently | |
6289 | selected frame. */) | |
6290 | (frame) | |
6291 | Lisp_Object frame; | |
6292 | { | |
6293 | Lisp_Object alist; | |
6294 | FRAME_PTR f; | |
6295 | ||
6296 | if (NILP (frame)) | |
6297 | frame = selected_frame; | |
6298 | ||
6299 | CHECK_FRAME (frame); | |
6300 | f = XFRAME (frame); | |
6301 | ||
6302 | if (!FRAME_LIVE_P (f)) | |
6303 | return Qnil; | |
6304 | ||
c16e1cc3 | 6305 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6306 | } |
6307 | ||
5500c422 GM |
6308 | \f |
6309 | /*********************************************************************** | |
6310 | Marginal Areas | |
6311 | ***********************************************************************/ | |
6312 | ||
6313 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6314 | 2, 3, 0, |
fdb82f93 | 6315 | doc: /* Set width of marginal areas of window WINDOW. |
e661376d KS |
6316 | If WINDOW is nil, set margins of the currently selected window. |
6317 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6318 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6319 | does the same for the right marginal area. A nil width parameter | |
6320 | means no margin. */) | |
c10ce82e JB |
6321 | (window, left_width, right_width) |
6322 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6323 | { |
6324 | struct window *w = decode_window (window); | |
5500c422 | 6325 | |
c2c3f202 KS |
6326 | /* Translate negative or zero widths to nil. |
6327 | Margins that are too wide have to be checked elsewhere. */ | |
6328 | ||
c10ce82e | 6329 | if (!NILP (left_width)) |
c2c3f202 | 6330 | { |
c10ce82e JB |
6331 | CHECK_NUMBER (left_width); |
6332 | if (XINT (left_width) <= 0) | |
6333 | left_width = Qnil; | |
c2c3f202 | 6334 | } |
5500c422 | 6335 | |
c10ce82e | 6336 | if (!NILP (right_width)) |
c2c3f202 | 6337 | { |
c10ce82e JB |
6338 | CHECK_NUMBER (right_width); |
6339 | if (XINT (right_width) <= 0) | |
6340 | right_width = Qnil; | |
c2c3f202 | 6341 | } |
5500c422 | 6342 | |
c10ce82e JB |
6343 | if (!EQ (w->left_margin_cols, left_width) |
6344 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6345 | { |
c10ce82e JB |
6346 | w->left_margin_cols = left_width; |
6347 | w->right_margin_cols = right_width; | |
949cf20f KS |
6348 | |
6349 | adjust_window_margins (w); | |
6350 | ||
6351 | ++windows_or_buffers_changed; | |
6352 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6353 | } | |
5500c422 | 6354 | |
5500c422 GM |
6355 | return Qnil; |
6356 | } | |
6357 | ||
6358 | ||
6359 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6360 | 0, 1, 0, | |
fdb82f93 PJ |
6361 | doc: /* Get width of marginal areas of window WINDOW. |
6362 | If WINDOW is omitted or nil, use the currently selected window. | |
6363 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6364 | If a marginal area does not exist, its width will be returned | |
6365 | as nil. */) | |
6366 | (window) | |
5500c422 GM |
6367 | Lisp_Object window; |
6368 | { | |
6369 | struct window *w = decode_window (window); | |
949cf20f KS |
6370 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6371 | } | |
6372 | ||
6373 | ||
6374 | \f | |
6375 | /*********************************************************************** | |
6376 | Fringes | |
6377 | ***********************************************************************/ | |
6378 | ||
6379 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6380 | 2, 4, 0, | |
62c2f759 | 6381 | doc: /* Set the fringe widths of window WINDOW. |
62c2f759 LK |
6382 | If WINDOW is nil, set the fringe widths of the currently selected |
6383 | window. | |
e661376d KS |
6384 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6385 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6386 | fringe width. If a fringe width arg is nil, that means to use the | |
6387 | frame's default fringe width. Default fringe widths can be set with | |
6388 | the command `set-fringe-style'. | |
6389 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
62c2f759 LK |
6390 | outside of the display margins. By default, fringes are drawn between |
6391 | display marginal areas and the text area. */) | |
c10ce82e JB |
6392 | (window, left_width, right_width, outside_margins) |
6393 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6394 | { |
6395 | struct window *w = decode_window (window); | |
6396 | ||
c10ce82e JB |
6397 | if (!NILP (left_width)) |
6398 | CHECK_NATNUM (left_width); | |
6399 | if (!NILP (right_width)) | |
6400 | CHECK_NATNUM (right_width); | |
949cf20f | 6401 | |
c10ce82e JB |
6402 | if (!EQ (w->left_fringe_width, left_width) |
6403 | || !EQ (w->right_fringe_width, right_width) | |
949cf20f KS |
6404 | || !EQ (w->fringes_outside_margins, outside_margins)) |
6405 | { | |
c10ce82e JB |
6406 | w->left_fringe_width = left_width; |
6407 | w->right_fringe_width = right_width; | |
949cf20f KS |
6408 | w->fringes_outside_margins = outside_margins; |
6409 | ||
6410 | adjust_window_margins (w); | |
6411 | ||
6412 | clear_glyph_matrix (w->current_matrix); | |
6413 | w->window_end_valid = Qnil; | |
6414 | ||
6415 | ++windows_or_buffers_changed; | |
6416 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6417 | } | |
6418 | ||
6419 | return Qnil; | |
6420 | } | |
6421 | ||
6422 | ||
6423 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6424 | 0, 1, 0, | |
6425 | doc: /* Get width of fringes of window WINDOW. | |
6426 | If WINDOW is omitted or nil, use the currently selected window. | |
467e281a | 6427 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6428 | (window) |
6429 | Lisp_Object window; | |
6430 | { | |
6431 | struct window *w = decode_window (window); | |
6432 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), | |
6433 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6434 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? | |
6435 | Qt : Qnil), Qnil))); | |
6436 | } | |
6437 | ||
6438 | ||
6439 | \f | |
6440 | /*********************************************************************** | |
6441 | Scroll bars | |
6442 | ***********************************************************************/ | |
6443 | ||
6444 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6445 | 2, 4, 0, | |
6446 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6447 | If window is nil, set scroll bars of the currently selected window. | |
6448 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6449 | this is automatically adjusted to a multiple of the frame column width. | |
6450 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6451 | bar: left, right, or nil. | |
2f71b5ea MY |
6452 | If WIDTH is nil, use the frame's scroll-bar width. |
6453 | If TYPE is t, use the frame's scroll-bar type. */) | |
79fd290e JB |
6454 | (window, width, vertical_type, horizontal_type) |
6455 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6456 | { |
6457 | struct window *w = decode_window (window); | |
6458 | ||
6459 | if (!NILP (width)) | |
0f8fe9a2 SM |
6460 | { |
6461 | CHECK_NATNUM (width); | |
949cf20f | 6462 | |
0f8fe9a2 SM |
6463 | if (XINT (width) == 0) |
6464 | vertical_type = Qnil; | |
6465 | } | |
949cf20f | 6466 | |
2f71b5ea | 6467 | if (!(EQ (vertical_type, Qnil) |
0cc1039f | 6468 | || EQ (vertical_type, Qleft) |
2f71b5ea MY |
6469 | || EQ (vertical_type, Qright) |
6470 | || EQ (vertical_type, Qt))) | |
6471 | error ("Invalid type of vertical scroll bar"); | |
6472 | ||
949cf20f KS |
6473 | if (!EQ (w->scroll_bar_width, width) |
6474 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6475 | { | |
6476 | w->scroll_bar_width = width; | |
6477 | w->vertical_scroll_bar_type = vertical_type; | |
6478 | ||
6479 | adjust_window_margins (w); | |
6480 | ||
6481 | clear_glyph_matrix (w->current_matrix); | |
6482 | w->window_end_valid = Qnil; | |
6483 | ||
6484 | ++windows_or_buffers_changed; | |
6485 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6486 | } | |
6487 | ||
6488 | return Qnil; | |
6489 | } | |
6490 | ||
6491 | ||
6492 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6493 | 0, 1, 0, | |
6494 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6495 | If WINDOW is omitted or nil, use the currently selected window. | |
12853c58 KS |
6496 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6497 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6498 | value. */) | |
949cf20f KS |
6499 | (window) |
6500 | Lisp_Object window; | |
6501 | { | |
6502 | struct window *w = decode_window (window); | |
6503 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6504 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6505 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6506 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6507 | Fcons (w->vertical_scroll_bar_type, | |
6508 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6509 | } |
6510 | ||
6511 | ||
7ab12479 | 6512 | \f |
5500c422 GM |
6513 | /*********************************************************************** |
6514 | Smooth scrolling | |
6515 | ***********************************************************************/ | |
6516 | ||
0cc1039f | 6517 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6518 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6519 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f KS |
6520 | Normally, value is a multiple of the canonical character height of WINDOW; |
6521 | optional second arg PIXELS_P means value is measured in pixels. */) | |
6522 | (window, pixels_p) | |
6523 | Lisp_Object window, pixels_p; | |
5500c422 | 6524 | { |
47004952 | 6525 | Lisp_Object result; |
5500c422 GM |
6526 | struct frame *f; |
6527 | struct window *w; | |
177c0ea7 | 6528 | |
5500c422 GM |
6529 | if (NILP (window)) |
6530 | window = selected_window; | |
47004952 | 6531 | else |
b7826503 | 6532 | CHECK_WINDOW (window); |
5500c422 GM |
6533 | w = XWINDOW (window); |
6534 | f = XFRAME (w->frame); | |
177c0ea7 | 6535 | |
5500c422 | 6536 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6537 | result = (NILP (pixels_p) |
6538 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6539 | : make_number (-w->vscroll)); | |
5500c422 | 6540 | else |
47004952 GM |
6541 | result = make_number (0); |
6542 | return result; | |
5500c422 GM |
6543 | } |
6544 | ||
6545 | ||
6546 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6547 | 2, 3, 0, |
fdb82f93 | 6548 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6549 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6550 | non-negative multiple of the canonical character height of WINDOW; | |
a0a37a6f LT |
6551 | optional third arg PIXELS_P non-nil means that VSCROLL is in pixels. |
6552 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it | |
6553 | corresponds to an integral number of pixels. The return value is the | |
6554 | result of this rounding. | |
6555 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6556 | (window, vscroll, pixels_p) |
6557 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6558 | { |
6559 | struct window *w; | |
6560 | struct frame *f; | |
177c0ea7 | 6561 | |
5500c422 GM |
6562 | if (NILP (window)) |
6563 | window = selected_window; | |
47004952 | 6564 | else |
b7826503 PJ |
6565 | CHECK_WINDOW (window); |
6566 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6567 | |
5500c422 GM |
6568 | w = XWINDOW (window); |
6569 | f = XFRAME (w->frame); | |
6570 | ||
6571 | if (FRAME_WINDOW_P (f)) | |
6572 | { | |
6573 | int old_dy = w->vscroll; | |
177c0ea7 | 6574 | |
0cc1039f KS |
6575 | w->vscroll = - (NILP (pixels_p) |
6576 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6577 | : XFLOATINT (vscroll)); | |
47004952 | 6578 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6579 | |
e56263e5 KS |
6580 | if (w->vscroll != old_dy) |
6581 | { | |
6582 | /* Adjust glyph matrix of the frame if the virtual display | |
6583 | area becomes larger than before. */ | |
6584 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6585 | adjust_glyphs (f); | |
177c0ea7 | 6586 | |
e56263e5 KS |
6587 | /* Prevent redisplay shortcuts. */ |
6588 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6589 | } | |
5500c422 | 6590 | } |
177c0ea7 | 6591 | |
0cc1039f | 6592 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6593 | } |
177c0ea7 | 6594 | |
7bbb5782 GM |
6595 | \f |
6596 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6597 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6598 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6599 | |
6600 | void | |
f95464e4 | 6601 | foreach_window (f, fn, user_data) |
7bbb5782 | 6602 | struct frame *f; |
f95464e4 GM |
6603 | int (* fn) P_ ((struct window *, void *)); |
6604 | void *user_data; | |
7bbb5782 | 6605 | { |
f95464e4 | 6606 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
6607 | } |
6608 | ||
6609 | ||
6610 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6611 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6612 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6613 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6614 | |
67492200 | 6615 | static int |
f95464e4 | 6616 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 6617 | struct window *w; |
f95464e4 GM |
6618 | int (* fn) P_ ((struct window *, void *)); |
6619 | void *user_data; | |
7bbb5782 | 6620 | { |
67492200 | 6621 | int cont; |
177c0ea7 | 6622 | |
67492200 | 6623 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6624 | { |
6625 | if (!NILP (w->hchild)) | |
f95464e4 | 6626 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6627 | else if (!NILP (w->vchild)) |
f95464e4 | 6628 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6629 | else |
0f532a9a | 6630 | cont = fn (w, user_data); |
177c0ea7 | 6631 | |
7bbb5782 GM |
6632 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6633 | } | |
67492200 GM |
6634 | |
6635 | return cont; | |
7bbb5782 GM |
6636 | } |
6637 | ||
6638 | ||
6d194a45 | 6639 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6640 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6641 | the window start. */ |
6642 | ||
67492200 | 6643 | static int |
7bbb5782 GM |
6644 | freeze_window_start (w, freeze_p) |
6645 | struct window *w; | |
f95464e4 | 6646 | void *freeze_p; |
7bbb5782 GM |
6647 | { |
6648 | if (w == XWINDOW (selected_window) | |
6649 | || MINI_WINDOW_P (w) | |
6650 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 6651 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 6652 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 6653 | freeze_p = NULL; |
177c0ea7 | 6654 | |
f95464e4 | 6655 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6656 | return 1; |
7bbb5782 GM |
6657 | } |
6658 | ||
6659 | ||
6660 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6661 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6662 | means freeze the window start. */ | |
6663 | ||
6664 | void | |
6665 | freeze_window_starts (f, freeze_p) | |
6666 | struct frame *f; | |
6667 | int freeze_p; | |
6668 | { | |
cbccabec | 6669 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6670 | } |
5500c422 GM |
6671 | |
6672 | \f | |
6673 | /*********************************************************************** | |
6674 | Initialization | |
6675 | ***********************************************************************/ | |
6676 | ||
cbff28e8 RS |
6677 | /* Return 1 if window configurations C1 and C2 |
6678 | describe the same state of affairs. This is used by Fequal. */ | |
6679 | ||
6680 | int | |
2f8274be | 6681 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 6682 | Lisp_Object c1, c2; |
2f8274be | 6683 | int ignore_positions; |
cbff28e8 RS |
6684 | { |
6685 | register struct save_window_data *d1, *d2; | |
6686 | struct Lisp_Vector *sw1, *sw2; | |
6687 | int i; | |
6688 | ||
4d3edcb4 GM |
6689 | if (!WINDOW_CONFIGURATIONP (c1)) |
6690 | wrong_type_argument (Qwindow_configuration_p, c1); | |
6691 | if (!WINDOW_CONFIGURATIONP (c2)) | |
6692 | wrong_type_argument (Qwindow_configuration_p, c2); | |
177c0ea7 | 6693 | |
cbff28e8 RS |
6694 | d1 = (struct save_window_data *) XVECTOR (c1); |
6695 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6696 | sw1 = XVECTOR (d1->saved_windows); | |
6697 | sw2 = XVECTOR (d2->saved_windows); | |
6698 | ||
949cf20f | 6699 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 6700 | return 0; |
949cf20f | 6701 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
6702 | return 0; |
6703 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
6704 | return 0; | |
6705 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6706 | return 0; | |
6707 | /* Don't compare the current_window field directly. | |
6708 | Instead see w1_is_current and w2_is_current, below. */ | |
6709 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6710 | return 0; | |
2f8274be | 6711 | if (! ignore_positions) |
3f49fddc KS |
6712 | { |
6713 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6714 | return 0; | |
6715 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6716 | return 0; | |
6717 | } | |
cbff28e8 RS |
6718 | /* Don't compare the root_window field. |
6719 | We don't require the two configurations | |
6720 | to use the same window object, | |
6721 | and the two root windows must be equivalent | |
6722 | if everything else compares equal. */ | |
6723 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6724 | return 0; | |
6725 | if (! EQ (d1->min_width, d2->min_width)) | |
6726 | return 0; | |
6727 | if (! EQ (d1->min_height, d2->min_height)) | |
6728 | return 0; | |
6729 | ||
6730 | /* Verify that the two confis have the same number of windows. */ | |
6731 | if (sw1->size != sw2->size) | |
6732 | return 0; | |
6733 | ||
6734 | for (i = 0; i < sw1->size; i++) | |
6735 | { | |
6736 | struct saved_window *p1, *p2; | |
6737 | int w1_is_current, w2_is_current; | |
6738 | ||
6739 | p1 = SAVED_WINDOW_N (sw1, i); | |
6740 | p2 = SAVED_WINDOW_N (sw2, i); | |
6741 | ||
6742 | /* Verify that the current windows in the two | |
6743 | configurations correspond to each other. */ | |
6744 | w1_is_current = EQ (d1->current_window, p1->window); | |
6745 | w2_is_current = EQ (d2->current_window, p2->window); | |
6746 | ||
6747 | if (w1_is_current != w2_is_current) | |
6748 | return 0; | |
6749 | ||
6750 | /* Verify that the corresponding windows do match. */ | |
6751 | if (! EQ (p1->buffer, p2->buffer)) | |
6752 | return 0; | |
949cf20f | 6753 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6754 | return 0; |
949cf20f | 6755 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6756 | return 0; |
949cf20f | 6757 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6758 | return 0; |
949cf20f | 6759 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6760 | return 0; |
cbff28e8 RS |
6761 | if (! EQ (p1->display_table, p2->display_table)) |
6762 | return 0; | |
6763 | if (! EQ (p1->parent, p2->parent)) | |
6764 | return 0; | |
6765 | if (! EQ (p1->prev, p2->prev)) | |
6766 | return 0; | |
2f8274be RS |
6767 | if (! ignore_positions) |
6768 | { | |
6769 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6770 | return 0; | |
ea68264b GM |
6771 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6772 | return 0; | |
2f8274be RS |
6773 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6774 | return 0; | |
6775 | if (NILP (Fequal (p1->start, p2->start))) | |
6776 | return 0; | |
6777 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
6778 | return 0; | |
6779 | if (NILP (Fequal (p1->mark, p2->mark))) | |
6780 | return 0; | |
6781 | } | |
949cf20f KS |
6782 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
6783 | return 0; | |
6784 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
6785 | return 0; | |
6786 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
6787 | return 0; | |
6788 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
6789 | return 0; | |
6790 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
6791 | return 0; | |
6792 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
6793 | return 0; | |
6794 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
6795 | return 0; | |
cbff28e8 RS |
6796 | } |
6797 | ||
6798 | return 1; | |
6799 | } | |
2f8274be RS |
6800 | |
6801 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6802 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6803 | doc: /* Compare two window configurations as regards the structure of windows. |
6804 | This function ignores details such as the values of point and mark | |
6805 | and scrolling positions. */) | |
6806 | (x, y) | |
2f8274be RS |
6807 | Lisp_Object x, y; |
6808 | { | |
6809 | if (compare_window_configurations (x, y, 1)) | |
6810 | return Qt; | |
6811 | return Qnil; | |
6812 | } | |
cbff28e8 | 6813 | \f |
dfcf069d | 6814 | void |
7ab12479 JB |
6815 | init_window_once () |
6816 | { | |
1ae1a37d GM |
6817 | struct frame *f = make_terminal_frame (); |
6818 | XSETFRAME (selected_frame, f); | |
6819 | Vterminal_frame = selected_frame; | |
6820 | minibuf_window = f->minibuffer_window; | |
6821 | selected_window = f->selected_window; | |
6822 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6823 | |
6824 | window_initialized = 1; | |
7ab12479 JB |
6825 | } |
6826 | ||
67492200 GM |
6827 | void |
6828 | init_window () | |
6829 | { | |
6830 | Vwindow_list = Qnil; | |
6831 | } | |
6832 | ||
dfcf069d | 6833 | void |
7ab12479 JB |
6834 | syms_of_window () |
6835 | { | |
8a37516b GM |
6836 | Qwindow_size_fixed = intern ("window-size-fixed"); |
6837 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 6838 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 6839 | |
543f5fb1 RS |
6840 | staticpro (&Qwindow_configuration_change_hook); |
6841 | Qwindow_configuration_change_hook | |
6842 | = intern ("window-configuration-change-hook"); | |
6843 | ||
7ab12479 JB |
6844 | Qwindowp = intern ("windowp"); |
6845 | staticpro (&Qwindowp); | |
6846 | ||
3f8ab7bd RS |
6847 | Qwindow_configuration_p = intern ("window-configuration-p"); |
6848 | staticpro (&Qwindow_configuration_p); | |
6849 | ||
806b4d9b JB |
6850 | Qwindow_live_p = intern ("window-live-p"); |
6851 | staticpro (&Qwindow_live_p); | |
605be8af | 6852 | |
2cccc823 | 6853 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
6854 | staticpro (&Qtemp_buffer_show_hook); |
6855 | ||
67492200 | 6856 | staticpro (&Vwindow_list); |
8bfb170b KS |
6857 | |
6858 | minibuf_selected_window = Qnil; | |
3dbab091 | 6859 | staticpro (&minibuf_selected_window); |
67492200 | 6860 | |
7ab12479 | 6861 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
6862 | doc: /* Non-nil means call as function to display a help buffer. |
6863 | The function is called with one argument, the buffer to be displayed. | |
6864 | Used by `with-output-to-temp-buffer'. | |
6865 | If this function is used, then it must do the entire job of showing | |
6866 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
6867 | Vtemp_buffer_show_function = Qnil; |
6868 | ||
6869 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
6870 | doc: /* If non-nil, function to call to handle `display-buffer'. |
6871 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
6872 | that the currently selected window is not acceptable. |
6873 | It should choose or create a window, display the specified buffer in it, | |
6874 | and return the window. | |
fdb82f93 PJ |
6875 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
6876 | work using this function. */); | |
7ab12479 JB |
6877 | Vdisplay_buffer_function = Qnil; |
6878 | ||
6529ed87 | 6879 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
6880 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
6881 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
6882 | Veven_window_heights = Qt; |
6883 | ||
7ab12479 | 6884 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 6885 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6886 | Vminibuf_scroll_window = Qnil; |
6887 | ||
cc91894c | 6888 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 6889 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6890 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6891 | is displayed in the `mode-line' face. */); | |
6892 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6893 | |
7ab12479 | 6894 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 6895 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6896 | Vother_window_scroll_buffer = Qnil; |
6897 | ||
44fa5b1e | 6898 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 6899 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 6900 | pop_up_frames = 0; |
7ab12479 | 6901 | |
e56263e5 KS |
6902 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
6903 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
6904 | auto_window_vscroll_p = 1; | |
6905 | ||
9c3da604 | 6906 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
6907 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
6908 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
6909 | display_buffer_reuse_frames = 0; |
6910 | ||
44fa5b1e | 6911 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
6912 | doc: /* Function to call to handle automatic new frame creation. |
6913 | It is called with no arguments and should return a newly created frame. | |
6914 | ||
6915 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
6916 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 6917 | Vpop_up_frame_function = Qnil; |
7ab12479 | 6918 | |
a90712c2 | 6919 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 6920 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
6921 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
6922 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
6923 | using `special-display-function'. See also `special-display-regexps'. |
6924 | ||
6925 | An element of the list can be a list instead of just a string. | |
6926 | There are two ways to use a list as an element: | |
6927 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
6928 | In the first case, the FRAME-PARAMETERS are pairs of the form |
6929 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
6930 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
6931 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
6932 | All this is done by the function found in `special-display-function'. |
6933 | ||
499858c5 RS |
6934 | If the specified frame parameters include (same-buffer . t), the |
6935 | buffer is displayed in the currently selected window. Otherwise, if | |
6936 | they include (same-frame . t), the buffer is displayed in a new window | |
6937 | in the currently selected frame. | |
6938 | ||
fdb82f93 PJ |
6939 | If this variable appears \"not to work\", because you add a name to it |
6940 | but that buffer still appears in the selected window, look at the | |
6941 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6942 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6943 | Vspecial_display_buffer_names = Qnil; |
6944 | ||
6945 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 6946 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
6947 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
6948 | if any regexp in this list matches the buffer name, it makes a | |
6949 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
6950 | |
6951 | An element of the list can be a list instead of just a string. | |
6952 | There are two ways to use a list as an element: | |
6953 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
6954 | In the first case, the FRAME-PARAMETERS are pairs of the form |
6955 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
6956 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
6957 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
6958 | All this is done by the function found in `special-display-function'. |
6959 | ||
499858c5 RS |
6960 | If the specified frame parameters include (same-buffer . t), the |
6961 | buffer is displayed in the currently selected window. Otherwise, if | |
6962 | they include (same-frame . t), the buffer is displayed in a new window | |
6963 | in the currently selected frame. | |
6964 | ||
fdb82f93 PJ |
6965 | If this variable appears \"not to work\", because you add a regexp to it |
6966 | but the matching buffers still appear in the selected window, look at the | |
6967 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6968 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6969 | Vspecial_display_regexps = Qnil; |
6970 | ||
6971 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
6972 | doc: /* Function to call to make a new frame for a special buffer. |
6973 | It is called with two arguments, the buffer and optional buffer specific | |
6974 | data, and should return a window displaying that buffer. | |
a5731348 SM |
6975 | The default value normally makes a separate frame for the buffer, |
6976 | using `special-display-frame-alist' to specify the frame parameters. | |
6977 | But if the buffer specific data includes (same-buffer . t) then the | |
6978 | buffer is displayed in the current selected window. | |
6979 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
6980 | a new window in the currently selected frame. | |
6981 | ||
6982 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 6983 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
6984 | Vspecial_display_function = Qnil; |
6985 | ||
855d8627 | 6986 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
6987 | doc: /* *List of buffer names that should appear in the selected window. |
6988 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
6989 | switches to it in the selected window, rather than making it appear | |
6990 | in some other window. | |
6991 | ||
6992 | An element of the list can be a cons cell instead of just a string. | |
6993 | Then the car must be a string, which specifies the buffer name. | |
6994 | This is for compatibility with `special-display-buffer-names'; | |
6995 | the cdr of the cons cell is ignored. | |
6996 | ||
6997 | See also `same-window-regexps'. */); | |
855d8627 RS |
6998 | Vsame_window_buffer_names = Qnil; |
6999 | ||
7000 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7001 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7002 | If a buffer name matches one of these regexps, then displaying it | |
7003 | using `display-buffer' or `pop-to-buffer' switches to it | |
7004 | in the selected window, rather than making it appear in some other window. | |
7005 | ||
7006 | An element of the list can be a cons cell instead of just a string. | |
7007 | Then the car must be a string, which specifies the buffer name. | |
7008 | This is for compatibility with `special-display-buffer-names'; | |
7009 | the cdr of the cons cell is ignored. | |
7010 | ||
7011 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7012 | Vsame_window_regexps = Qnil; |
7013 | ||
7ab12479 | 7014 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7015 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7016 | pop_up_windows = 1; |
7017 | ||
7018 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7019 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7020 | next_screen_context_lines = 2; |
7021 | ||
7022 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
876e2665 | 7023 | doc: /* *A window must be at least this tall to be eligible for splitting by `display-buffer'. |
fdb82f93 | 7024 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7025 | split_height_threshold = 500; |
7026 | ||
7027 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 7028 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
7029 | window_min_height = 4; |
7030 | ||
7031 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 7032 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
7033 | window_min_width = 10; |
7034 | ||
5500c422 GM |
7035 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7036 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7037 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7038 | A value of nil means point does not keep its screen position except | |
7039 | at the scroll margin or window boundary respectively. | |
7040 | A value of t means point keeps its screen position if the scroll | |
7041 | command moved it vertically out of the window, e.g. when scrolling | |
7042 | by full screens. | |
7043 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7044 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7045 | |
543f5fb1 RS |
7046 | DEFVAR_LISP ("window-configuration-change-hook", |
7047 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
7048 | doc: /* Functions to call when window configuration changes. |
7049 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
7050 | Vwindow_configuration_change_hook = Qnil; |
7051 | ||
7ab12479 JB |
7052 | defsubr (&Sselected_window); |
7053 | defsubr (&Sminibuffer_window); | |
7054 | defsubr (&Swindow_minibuffer_p); | |
7055 | defsubr (&Swindowp); | |
806b4d9b | 7056 | defsubr (&Swindow_live_p); |
7ab12479 JB |
7057 | defsubr (&Spos_visible_in_window_p); |
7058 | defsubr (&Swindow_buffer); | |
7059 | defsubr (&Swindow_height); | |
7060 | defsubr (&Swindow_width); | |
7061 | defsubr (&Swindow_hscroll); | |
7062 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7063 | defsubr (&Swindow_redisplay_end_trigger); |
7064 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7065 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7066 | defsubr (&Swindow_pixel_edges); |
7067 | defsubr (&Swindow_inside_edges); | |
7068 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7069 | defsubr (&Scoordinates_in_window_p); |
7070 | defsubr (&Swindow_at); | |
7ab12479 JB |
7071 | defsubr (&Swindow_point); |
7072 | defsubr (&Swindow_start); | |
7073 | defsubr (&Swindow_end); | |
7074 | defsubr (&Sset_window_point); | |
7075 | defsubr (&Sset_window_start); | |
7076 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7077 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7078 | defsubr (&Swindow_display_table); |
7079 | defsubr (&Sset_window_display_table); | |
7080 | defsubr (&Snext_window); | |
7081 | defsubr (&Sprevious_window); | |
7082 | defsubr (&Sother_window); | |
7083 | defsubr (&Sget_lru_window); | |
7084 | defsubr (&Sget_largest_window); | |
7085 | defsubr (&Sget_buffer_window); | |
7086 | defsubr (&Sdelete_other_windows); | |
7087 | defsubr (&Sdelete_windows_on); | |
7088 | defsubr (&Sreplace_buffer_in_windows); | |
7089 | defsubr (&Sdelete_window); | |
7090 | defsubr (&Sset_window_buffer); | |
7091 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7092 | defsubr (&Sspecial_display_p); |
7093 | defsubr (&Ssame_window_p); | |
7ab12479 | 7094 | defsubr (&Sdisplay_buffer); |
e661376d | 7095 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7096 | defsubr (&Ssplit_window); |
7097 | defsubr (&Senlarge_window); | |
7098 | defsubr (&Sshrink_window); | |
7099 | defsubr (&Sscroll_up); | |
7100 | defsubr (&Sscroll_down); | |
7101 | defsubr (&Sscroll_left); | |
7102 | defsubr (&Sscroll_right); | |
ccd0664b | 7103 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7104 | defsubr (&Sscroll_other_window); |
fa832261 | 7105 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7106 | defsubr (&Srecenter); |
81fe0836 | 7107 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7108 | defsubr (&Smove_to_window_line); |
7109 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7110 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7111 | defsubr (&Sset_window_configuration); |
7112 | defsubr (&Scurrent_window_configuration); | |
7113 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7114 | defsubr (&Swindow_tree); |
5500c422 GM |
7115 | defsubr (&Sset_window_margins); |
7116 | defsubr (&Swindow_margins); | |
949cf20f KS |
7117 | defsubr (&Sset_window_fringes); |
7118 | defsubr (&Swindow_fringes); | |
7119 | defsubr (&Sset_window_scroll_bars); | |
7120 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7121 | defsubr (&Swindow_vscroll); |
7122 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7123 | defsubr (&Scompare_window_configurations); |
67492200 | 7124 | defsubr (&Swindow_list); |
7ab12479 JB |
7125 | } |
7126 | ||
dfcf069d | 7127 | void |
7ab12479 JB |
7128 | keys_of_window () |
7129 | { | |
7130 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7131 | initial_define_key (control_x_map, '2', "split-window"); | |
7132 | initial_define_key (control_x_map, '0', "delete-window"); | |
7133 | initial_define_key (control_x_map, 'o', "other-window"); | |
7134 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7135 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7136 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7137 | ||
7138 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7139 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7140 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7141 | ||
7142 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7143 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7144 | } | |
ab5796a9 MB |
7145 | |
7146 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
7147 | (do not change this comment) */ |