Commit | Line | Data |
---|---|---|
7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
203eb0aa SM |
3 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
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 RS |
276 | p->height_fixed_p = 0; |
277 | p->last_cursor_off_p = p->cursor_off_p = 0; | |
949cf20f KS |
278 | p->left_margin_cols = Qnil; |
279 | p->right_margin_cols = Qnil; | |
280 | p->left_fringe_width = Qnil; | |
281 | p->right_fringe_width = Qnil; | |
282 | p->fringes_outside_margins = Qnil; | |
283 | p->scroll_bar_width = Qnil; | |
284 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
285 | |
286 | Vwindow_list = Qnil; | |
7ab12479 JB |
287 | return val; |
288 | } | |
289 | ||
290 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
291 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
292 | () | |
7ab12479 JB |
293 | { |
294 | return selected_window; | |
295 | } | |
296 | ||
83762ba4 | 297 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
298 | doc: /* Return the window used now for minibuffers. |
299 | If the optional argument FRAME is specified, return the minibuffer window | |
300 | used by that frame. */) | |
301 | (frame) | |
83762ba4 | 302 | Lisp_Object frame; |
7ab12479 | 303 | { |
83762ba4 | 304 | if (NILP (frame)) |
1ae1a37d | 305 | frame = selected_frame; |
b7826503 | 306 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 307 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
308 | } |
309 | ||
605be8af | 310 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
29a831f8 LT |
311 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
312 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 313 | (window) |
7ab12479 JB |
314 | Lisp_Object window; |
315 | { | |
316 | struct window *w = decode_window (window); | |
53bb6b99 | 317 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
318 | } |
319 | ||
320 | ||
7ab12479 | 321 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 322 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 323 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
324 | Return nil if that position is scrolled vertically out of view. |
325 | If a character is only partially visible, nil is returned, unless the | |
326 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 327 | If POS is only out of view because of horizontal scrolling, return non-nil. |
0cc1039f KS |
328 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
329 | ||
330 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5b1ba1e3 KS |
331 | return value is a list (X Y PARTIAL) where X and Y are the pixel coordinates |
332 | relative to the top left corner of the window. PARTIAL is nil if the character | |
333 | after POS is fully visible; otherwise it is a cons (RTOP . RBOT) where RTOP | |
334 | and RBOT are the number of pixels invisible at the top and bottom of the row. */) | |
fdb82f93 | 335 | (pos, window, partially) |
5cdb3cf3 | 336 | Lisp_Object pos, window, partially; |
7ab12479 JB |
337 | { |
338 | register struct window *w; | |
7ab12479 JB |
339 | register int posint; |
340 | register struct buffer *buf; | |
9a132b1f | 341 | struct text_pos top; |
0cc1039f | 342 | Lisp_Object in_window = Qnil; |
e56263e5 | 343 | int rtop, rbot, fully_p = 1; |
0cc1039f | 344 | int x, y; |
7ab12479 | 345 | |
f28b75a9 MB |
346 | w = decode_window (window); |
347 | buf = XBUFFER (w->buffer); | |
348 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
349 | ||
350 | if (!NILP (pos)) | |
7ab12479 | 351 | { |
b7826503 | 352 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
353 | posint = XINT (pos); |
354 | } | |
f28b75a9 MB |
355 | else if (w == XWINDOW (selected_window)) |
356 | posint = PT; | |
357 | else | |
358 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 359 | |
0cc1039f KS |
360 | /* If position is above window start or outside buffer boundaries, |
361 | or if window start is out of range, position is not visible. */ | |
362 | if (posint >= CHARPOS (top) | |
363 | && posint <= BUF_ZV (buf) | |
364 | && CHARPOS (top) >= BUF_BEGV (buf) | |
365 | && CHARPOS (top) <= BUF_ZV (buf) | |
e56263e5 KS |
366 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, NILP (partially)) |
367 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
0cc1039f KS |
368 | in_window = Qt; |
369 | ||
370 | if (!NILP (in_window) && !NILP (partially)) | |
371 | in_window = Fcons (make_number (x), | |
372 | Fcons (make_number (y), | |
5b1ba1e3 KS |
373 | Fcons ((fully_p ? Qnil |
374 | : Fcons (make_number (rtop), | |
375 | make_number (rbot))), | |
376 | Qnil))); | |
9a132b1f | 377 | return in_window; |
7ab12479 | 378 | } |
53bb6b99 | 379 | |
7ab12479 JB |
380 | \f |
381 | static struct window * | |
382 | decode_window (window) | |
383 | register Lisp_Object window; | |
384 | { | |
265a9e55 | 385 | if (NILP (window)) |
7ab12479 JB |
386 | return XWINDOW (selected_window); |
387 | ||
b7826503 | 388 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
389 | return XWINDOW (window); |
390 | } | |
391 | ||
e995d23a RS |
392 | static struct window * |
393 | decode_any_window (window) | |
394 | register Lisp_Object window; | |
395 | { | |
396 | if (NILP (window)) | |
397 | return XWINDOW (selected_window); | |
398 | ||
399 | CHECK_WINDOW (window); | |
400 | return XWINDOW (window); | |
401 | } | |
402 | ||
7ab12479 | 403 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
404 | doc: /* Return the buffer that WINDOW is displaying. |
405 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 406 | (window) |
7ab12479 JB |
407 | Lisp_Object window; |
408 | { | |
409 | return decode_window (window)->buffer; | |
410 | } | |
411 | ||
412 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
413 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
414 | (window) | |
7ab12479 JB |
415 | Lisp_Object window; |
416 | { | |
e995d23a | 417 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
418 | } |
419 | ||
420 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
421 | doc: /* Return the number of display columns in WINDOW. |
422 | This is the width that is usable columns available for text in WINDOW. | |
423 | If you want to find out how many columns WINDOW takes up, | |
424 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
425 | (window) | |
7ab12479 JB |
426 | Lisp_Object window; |
427 | { | |
e995d23a | 428 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
429 | } |
430 | ||
431 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
432 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
433 | (window) | |
7ab12479 JB |
434 | Lisp_Object window; |
435 | { | |
436 | return decode_window (window)->hscroll; | |
437 | } | |
438 | ||
439 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 440 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 441 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
442 | |
443 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
444 | window so that the location of point becomes invisible. */) | |
fdb82f93 | 445 | (window, ncol) |
ea68264b | 446 | Lisp_Object window, ncol; |
7ab12479 | 447 | { |
ea68264b GM |
448 | struct window *w = decode_window (window); |
449 | int hscroll; | |
7ab12479 | 450 | |
b7826503 | 451 | CHECK_NUMBER (ncol); |
ea68264b | 452 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 453 | |
ea68264b GM |
454 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
455 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 456 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 457 | |
c67fa410 | 458 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
459 | return ncol; |
460 | } | |
461 | ||
190eb263 RS |
462 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
463 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
464 | doc: /* Return WINDOW's redisplay end trigger value. |
465 | See `set-window-redisplay-end-trigger' for more information. */) | |
466 | (window) | |
190eb263 RS |
467 | Lisp_Object window; |
468 | { | |
469 | return decode_window (window)->redisplay_end_trigger; | |
470 | } | |
471 | ||
472 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
473 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
474 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
475 | VALUE should be a buffer position (typically a marker) or nil. | |
476 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
477 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
478 | with two arguments: WINDOW, and the end trigger value. | |
479 | Afterwards the end-trigger value is reset to nil. */) | |
480 | (window, value) | |
190eb263 RS |
481 | register Lisp_Object window, value; |
482 | { | |
483 | register struct window *w; | |
484 | ||
485 | w = decode_window (window); | |
486 | w->redisplay_end_trigger = value; | |
487 | return value; | |
488 | } | |
489 | ||
7ab12479 | 490 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
491 | doc: /* Return a list of the edge coordinates of WINDOW. |
492 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
493 | RIGHT is one more than the rightmost column occupied by WINDOW, |
494 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
495 | The edges include the space used by the window's scroll bar, | |
496 | display margins, fringes, header line, and mode line, if it has them. | |
497 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 498 | (window) |
7ab12479 JB |
499 | Lisp_Object window; |
500 | { | |
e995d23a | 501 | register struct window *w = decode_any_window (window); |
7ab12479 | 502 | |
949cf20f KS |
503 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
504 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
505 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
506 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
507 | Qnil)))); | |
7ab12479 JB |
508 | } |
509 | ||
c99a9eb3 RS |
510 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
511 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
512 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
513 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
514 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
515 | The pixel edges include the space used by the window's scroll bar, | |
516 | display margins, fringes, header line, and mode line, if it has them. | |
517 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
518 | (window) | |
519 | Lisp_Object window; | |
520 | { | |
e995d23a | 521 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
522 | |
523 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
524 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
525 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
526 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
527 | Qnil)))); | |
528 | } | |
529 | ||
530 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
531 | doc: /* Return a list of the edge coordinates of WINDOW. | |
532 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
533 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
534 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
535 | The inside edges do not include the space used by the window's scroll bar, | |
536 | display margins, fringes, header line, and/or mode line. */) | |
537 | (window) | |
538 | Lisp_Object window; | |
539 | { | |
e995d23a | 540 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
541 | |
542 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
543 | + WINDOW_LEFT_MARGIN_COLS (w) | |
544 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
545 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
546 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 547 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
548 | - WINDOW_RIGHT_MARGIN_COLS (w) |
549 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
550 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
551 | - WINDOW_MODE_LINE_LINES (w))); | |
552 | } | |
553 | ||
554 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 555 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
556 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
557 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
558 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
559 | The inside edges do not include the space used by the window's scroll bar, | |
560 | display margins, fringes, header line, and/or mode line. */) | |
561 | (window) | |
562 | Lisp_Object window; | |
563 | { | |
e995d23a | 564 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
565 | |
566 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
567 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
568 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
569 | make_number (WINDOW_TOP_EDGE_Y (w) | |
570 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 571 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
572 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
573 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
574 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
575 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
576 | } | |
577 | ||
fbad6f9a | 578 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 579 | If it is not, return ON_NOTHING; |
d5783c40 JB |
580 | if it is in the window's text area, |
581 | set *x and *y to its location relative to the upper left corner | |
582 | of the window, and | |
341f3858 KS |
583 | return ON_TEXT; |
584 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 585 | if it is on the border between the window and its right sibling, |
341f3858 | 586 | return ON_VERTICAL_BORDER. |
6487f669 RS |
587 | if it is on a scroll bar, |
588 | return ON_SCROLL_BAR. | |
341f3858 | 589 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 590 | if it is in left or right fringe of the window, |
341f3858 KS |
591 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
592 | to window-relative coordinates; | |
49b996e7 | 593 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
594 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
595 | to window-relative coordinates. | |
5500c422 GM |
596 | |
597 | X and Y are frame relative pixel coordinates. */ | |
598 | ||
7442878f | 599 | static enum window_part |
d5783c40 JB |
600 | coordinates_in_window (w, x, y) |
601 | register struct window *w; | |
602 | register int *x, *y; | |
603 | { | |
b0228ace GM |
604 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
605 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 606 | enum window_part part; |
949cf20f KS |
607 | int ux = FRAME_COLUMN_WIDTH (f); |
608 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
609 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
610 | /* The width of the area where the vertical line can be dragged. |
611 | (Between mode lines for instance. */ | |
612 | int grabbable_width = ux; | |
949cf20f | 613 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 614 | |
466539bc EZ |
615 | /* In what's below, we subtract 1 when computing right_x because we |
616 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
617 | if (w->pseudo_window_p) |
618 | { | |
619 | left_x = 0; | |
949cf20f KS |
620 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
621 | top_y = WINDOW_TOP_EDGE_Y (w); | |
622 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
623 | } |
624 | else | |
625 | { | |
949cf20f KS |
626 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
627 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
628 | top_y = WINDOW_TOP_EDGE_Y (w); | |
629 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 630 | } |
37962e60 | 631 | |
949cf20f KS |
632 | /* Outside any interesting row? */ |
633 | if (*y < top_y || *y >= bottom_y) | |
634 | return ON_NOTHING; | |
635 | ||
1cb794ba GM |
636 | /* On the mode line or header line? If it's near the start of |
637 | the mode or header line of window that's has a horizontal | |
638 | sibling, say it's on the vertical line. That's to be able | |
639 | to resize windows horizontally in case we're using toolkit | |
640 | scroll bars. */ | |
b0228ace | 641 | |
1cb794ba | 642 | if (WINDOW_WANTS_MODELINE_P (w) |
0de01dfe | 643 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 644 | { |
949cf20f KS |
645 | part = ON_MODE_LINE; |
646 | ||
647 | header_vertical_border_check: | |
b0228ace GM |
648 | /* We're somewhere on the mode line. We consider the place |
649 | between mode lines of horizontally adjacent mode lines | |
650 | as the vertical border. If scroll bars on the left, | |
651 | return the right window. */ | |
949cf20f KS |
652 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
653 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 654 | { |
949cf20f KS |
655 | if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width) |
656 | return ON_VERTICAL_BORDER; | |
b0228ace | 657 | } |
79fd290e | 658 | else |
b0228ace | 659 | { |
949cf20f KS |
660 | if (abs (*x - x1) < grabbable_width) |
661 | return ON_VERTICAL_BORDER; | |
b0228ace | 662 | } |
949cf20f | 663 | |
cb639b8f KS |
664 | if (*x < x0 || *x >= x1) |
665 | return ON_NOTHING; | |
666 | ||
a5303820 KS |
667 | /* Convert X and Y to window relative coordinates. |
668 | Mode line starts at left edge of window. */ | |
669 | *x -= x0; | |
670 | *y -= top_y; | |
949cf20f | 671 | return part; |
b0228ace | 672 | } |
949cf20f KS |
673 | |
674 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 675 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 676 | { |
949cf20f KS |
677 | part = ON_HEADER_LINE; |
678 | goto header_vertical_border_check; | |
1cb794ba | 679 | } |
949cf20f | 680 | |
cb639b8f KS |
681 | if (*x < x0 || *x >= x1) |
682 | return ON_NOTHING; | |
683 | ||
949cf20f KS |
684 | /* Outside any interesting column? */ |
685 | if (*x < left_x || *x > right_x) | |
6487f669 | 686 | return ON_SCROLL_BAR; |
949cf20f KS |
687 | |
688 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
689 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 690 | |
949cf20f KS |
691 | text_left = window_box_left (w, TEXT_AREA); |
692 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
693 | ||
694 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 695 | { |
447e9da0 | 696 | if (!w->pseudo_window_p |
949cf20f | 697 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 698 | && !WINDOW_RIGHTMOST_P (w) |
949cf20f KS |
699 | && (abs (*x - right_x) < grabbable_width)) |
700 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 701 | } |
447e9da0 GM |
702 | else |
703 | { | |
704 | /* Need to say "*x > right_x" rather than >=, since on character | |
705 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
706 | if (!w->pseudo_window_p |
707 | && !WINDOW_RIGHTMOST_P (w) | |
708 | && *x > right_x - ux) | |
b0228ace GM |
709 | { |
710 | /* On the border on the right side of the window? Assume that | |
711 | this area begins at RIGHT_X minus a canonical char width. */ | |
949cf20f | 712 | return ON_VERTICAL_BORDER; |
b0228ace | 713 | } |
447e9da0 | 714 | } |
b0228ace | 715 | |
949cf20f KS |
716 | if (*x < text_left) |
717 | { | |
718 | if (lmargin_width > 0 | |
719 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
720 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
721 | : (*x < left_x + lmargin_width))) | |
a5303820 | 722 | { |
0de01dfe | 723 | *x -= left_x; |
a5303820 KS |
724 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
725 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
726 | *y -= top_y; | |
727 | return ON_LEFT_MARGIN; | |
728 | } | |
949cf20f KS |
729 | |
730 | /* Convert X and Y to window-relative pixel coordinates. */ | |
731 | *x -= left_x; | |
732 | *y -= top_y; | |
733 | return ON_LEFT_FRINGE; | |
734 | } | |
735 | ||
736 | if (*x >= text_right) | |
737 | { | |
738 | if (rmargin_width > 0 | |
739 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
740 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
741 | : (*x >= right_x - rmargin_width))) | |
a5303820 KS |
742 | { |
743 | *x -= right_x; | |
744 | if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
745 | *x -= WINDOW_RIGHT_FRINGE_WIDTH (w); | |
746 | *y -= top_y; | |
747 | return ON_RIGHT_MARGIN; | |
748 | } | |
949cf20f KS |
749 | |
750 | /* Convert X and Y to window-relative pixel coordinates. */ | |
751 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
752 | *y -= top_y; | |
753 | return ON_RIGHT_FRINGE; | |
754 | } | |
755 | ||
756 | /* Everything special ruled out - must be on text area */ | |
757 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
758 | *y -= top_y; | |
759 | return ON_TEXT; | |
d5783c40 JB |
760 | } |
761 | ||
b0228ace | 762 | |
d5783c40 | 763 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
764 | Scoordinates_in_window_p, 2, 2, 0, |
765 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
766 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
767 | measured in characters from the upper-left corner of the frame. | |
768 | \(0 . 0) denotes the character in the upper left corner of the | |
769 | frame. | |
770 | If COORDINATES are in the text portion of WINDOW, | |
771 | the coordinates relative to the window are returned. | |
772 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
773 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
774 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
775 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 776 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
777 | `vertical-line' is returned. |
778 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
779 | or `right-margin' is returned. */) | |
fdb82f93 | 780 | (coordinates, window) |
d5783c40 JB |
781 | register Lisp_Object coordinates, window; |
782 | { | |
5500c422 GM |
783 | struct window *w; |
784 | struct frame *f; | |
d5783c40 | 785 | int x, y; |
5500c422 | 786 | Lisp_Object lx, ly; |
d5783c40 | 787 | |
e995d23a | 788 | CHECK_WINDOW (window); |
5500c422 GM |
789 | w = XWINDOW (window); |
790 | f = XFRAME (w->frame); | |
b7826503 | 791 | CHECK_CONS (coordinates); |
5500c422 GM |
792 | lx = Fcar (coordinates); |
793 | ly = Fcdr (coordinates); | |
b7826503 PJ |
794 | CHECK_NUMBER_OR_FLOAT (lx); |
795 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
796 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
797 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
798 | |
799 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 800 | { |
7442878f | 801 | case ON_NOTHING: |
d5783c40 JB |
802 | return Qnil; |
803 | ||
7442878f GM |
804 | case ON_TEXT: |
805 | /* X and Y are now window relative pixel coordinates. Convert | |
806 | them to canonical char units before returning them. */ | |
949cf20f KS |
807 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
808 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 809 | |
7442878f | 810 | case ON_MODE_LINE: |
d5783c40 | 811 | return Qmode_line; |
37962e60 | 812 | |
7442878f | 813 | case ON_VERTICAL_BORDER: |
e5d77022 | 814 | return Qvertical_line; |
d5783c40 | 815 | |
7442878f | 816 | case ON_HEADER_LINE: |
045dee35 | 817 | return Qheader_line; |
5500c422 | 818 | |
7442878f GM |
819 | case ON_LEFT_FRINGE: |
820 | return Qleft_fringe; | |
177c0ea7 | 821 | |
7442878f GM |
822 | case ON_RIGHT_FRINGE: |
823 | return Qright_fringe; | |
fbad6f9a | 824 | |
49b996e7 GM |
825 | case ON_LEFT_MARGIN: |
826 | return Qleft_margin; | |
177c0ea7 | 827 | |
49b996e7 GM |
828 | case ON_RIGHT_MARGIN: |
829 | return Qright_margin; | |
830 | ||
6487f669 RS |
831 | case ON_SCROLL_BAR: |
832 | /* Historically we are supposed to return nil in this case. */ | |
833 | return Qnil; | |
834 | ||
d5783c40 JB |
835 | default: |
836 | abort (); | |
837 | } | |
838 | } | |
839 | ||
67492200 GM |
840 | |
841 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
842 | Check if window W contains coordinates specified by USER_DATA which |
843 | is actually a pointer to a struct check_window_data CW. | |
844 | ||
845 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
846 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 847 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
848 | zero from this function to stop iterating over windows. */ |
849 | ||
850 | struct check_window_data | |
851 | { | |
852 | Lisp_Object *window; | |
341f3858 KS |
853 | int *x, *y; |
854 | enum window_part *part; | |
f95464e4 | 855 | }; |
67492200 GM |
856 | |
857 | static int | |
f95464e4 | 858 | check_window_containing (w, user_data) |
67492200 | 859 | struct window *w; |
f95464e4 | 860 | void *user_data; |
67492200 | 861 | { |
f95464e4 | 862 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
863 | enum window_part found; |
864 | int continue_p = 1; | |
67492200 | 865 | |
f95464e4 | 866 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 867 | if (found != ON_NOTHING) |
67492200 | 868 | { |
341f3858 | 869 | *cw->part = found; |
f95464e4 | 870 | XSETWINDOW (*cw->window, w); |
7442878f | 871 | continue_p = 0; |
67492200 | 872 | } |
177c0ea7 | 873 | |
7442878f | 874 | return continue_p; |
67492200 GM |
875 | } |
876 | ||
877 | ||
5500c422 | 878 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
879 | return it as a Lisp_Object. |
880 | ||
881 | If X, Y is on one of the window's special `window_part' elements, | |
882 | set *PART to the id of that element, and return X and Y converted | |
883 | to window relative coordinates in WX and WY. | |
884 | ||
341f3858 | 885 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
886 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
887 | ||
888 | This function was previously implemented with a loop cycling over | |
889 | windows with Fnext_window, and starting with the frame's selected | |
890 | window. It turned out that this doesn't work with an | |
891 | implementation of next_window using Vwindow_list, because | |
892 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
893 | tree of F when this function is called asynchronously from | |
894 | note_mouse_highlight. The original loop didn't terminate in this | |
895 | case. */ | |
5500c422 | 896 | |
7ab12479 | 897 | Lisp_Object |
949cf20f | 898 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 899 | struct frame *f; |
7ab12479 | 900 | int x, y; |
341f3858 | 901 | enum window_part *part; |
949cf20f | 902 | int *wx, *wy; |
9ea173e8 | 903 | int tool_bar_p; |
7ab12479 | 904 | { |
67492200 | 905 | Lisp_Object window; |
f95464e4 | 906 | struct check_window_data cw; |
341f3858 KS |
907 | enum window_part dummy; |
908 | ||
909 | if (part == 0) | |
910 | part = &dummy; | |
5500c422 | 911 | |
67492200 | 912 | window = Qnil; |
f95464e4 GM |
913 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
914 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 915 | |
67492200 GM |
916 | /* If not found above, see if it's in the tool bar window, if a tool |
917 | bar exists. */ | |
918 | if (NILP (window) | |
919 | && tool_bar_p | |
920 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 921 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
922 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
923 | != ON_NOTHING)) | |
5500c422 | 924 | { |
341f3858 | 925 | *part = ON_TEXT; |
67492200 | 926 | window = f->tool_bar_window; |
5500c422 | 927 | } |
37962e60 | 928 | |
949cf20f KS |
929 | if (wx) *wx = x; |
930 | if (wy) *wy = y; | |
931 | ||
67492200 | 932 | return window; |
7ab12479 JB |
933 | } |
934 | ||
ab17c3f2 | 935 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
936 | doc: /* Return window containing coordinates X and Y on FRAME. |
937 | If omitted, FRAME defaults to the currently selected frame. | |
938 | The top left corner of the frame is considered to be row 0, | |
939 | column 0. */) | |
940 | (x, y, frame) | |
941 | Lisp_Object x, y, frame; | |
7ab12479 | 942 | { |
5500c422 | 943 | struct frame *f; |
7ab12479 | 944 | |
44fa5b1e | 945 | if (NILP (frame)) |
1ae1a37d | 946 | frame = selected_frame; |
b7826503 | 947 | CHECK_LIVE_FRAME (frame); |
5500c422 | 948 | f = XFRAME (frame); |
7ab12479 | 949 | |
5500c422 | 950 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
951 | CHECK_NUMBER_OR_FLOAT (x); |
952 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 953 | |
177c0ea7 | 954 | return window_from_coordinates (f, |
2c77cf3b RS |
955 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
956 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
957 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
958 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 959 | 0, 0, 0, 0); |
7ab12479 JB |
960 | } |
961 | ||
962 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
963 | doc: /* Return current value of point in WINDOW. |
964 | For a nonselected window, this is the value point would have | |
965 | if that window were selected. | |
966 | ||
967 | Note that, when WINDOW is the selected window and its buffer | |
968 | is also currently selected, the value returned is the same as (point). | |
969 | It would be more strictly correct to return the `top-level' value | |
970 | of point, outside of any save-excursion forms. | |
971 | But that is hard to define. */) | |
972 | (window) | |
7ab12479 JB |
973 | Lisp_Object window; |
974 | { | |
975 | register struct window *w = decode_window (window); | |
976 | ||
977 | if (w == XWINDOW (selected_window) | |
978 | && current_buffer == XBUFFER (w->buffer)) | |
979 | return Fpoint (); | |
980 | return Fmarker_position (w->pointm); | |
981 | } | |
982 | ||
983 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
984 | doc: /* Return position at which display currently starts in WINDOW. |
985 | This is updated by redisplay or by calling `set-window-start'. */) | |
986 | (window) | |
7ab12479 JB |
987 | Lisp_Object window; |
988 | { | |
989 | return Fmarker_position (decode_window (window)->start); | |
990 | } | |
991 | ||
8646118f RS |
992 | /* This is text temporarily removed from the doc string below. |
993 | ||
fdb82f93 PJ |
994 | This function returns nil if the position is not currently known. |
995 | That happens when redisplay is preempted and doesn't finish. | |
996 | If in that case you want to compute where the end of the window would | |
997 | have been if redisplay had finished, do this: | |
998 | (save-excursion | |
999 | (goto-char (window-start window)) | |
1000 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1001 | (point))") */ |
1002 | ||
478292ed | 1003 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
1004 | doc: /* Return position at which display currently ends in WINDOW. |
1005 | This is updated by redisplay, when it runs to completion. | |
1006 | Simply changing the buffer text or setting `window-start' | |
1007 | does not update this value. | |
a0a37a6f LT |
1008 | Return nil if there is no recorded value. \(This can happen if the |
1009 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1010 | If UPDATE is non-nil, compute the up-to-date position |
1011 | if it isn't already recorded. */) | |
1012 | (window, update) | |
478292ed | 1013 | Lisp_Object window, update; |
7ab12479 JB |
1014 | { |
1015 | Lisp_Object value; | |
1016 | struct window *w = decode_window (window); | |
5a41ab94 RS |
1017 | Lisp_Object buf; |
1018 | ||
1019 | buf = w->buffer; | |
b7826503 | 1020 | CHECK_BUFFER (buf); |
5a41ab94 | 1021 | |
8646118f | 1022 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1023 | /* If we don't know the end position, return nil. |
1024 | The user can compute it with vertical-motion if he wants to. | |
1025 | It would be nicer to do it automatically, | |
1026 | but that's so slow that it would probably bother people. */ | |
1027 | if (NILP (w->window_end_valid)) | |
1028 | return Qnil; | |
8646118f | 1029 | #endif |
7250968e | 1030 | |
478292ed RS |
1031 | if (! NILP (update) |
1032 | && ! (! NILP (w->window_end_valid) | |
1033 | && XFASTINT (w->last_modified) >= MODIFF)) | |
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 | { | |
a34dfd12 GM |
2441 | if (w->height_fixed_p && !width_p) |
2442 | fixed_p = 1; | |
2443 | else | |
233a4a2c | 2444 | { |
a34dfd12 GM |
2445 | struct buffer *old = current_buffer; |
2446 | Lisp_Object val; | |
177c0ea7 | 2447 | |
a34dfd12 GM |
2448 | current_buffer = XBUFFER (w->buffer); |
2449 | val = find_symbol_value (Qwindow_size_fixed); | |
2450 | current_buffer = old; | |
2451 | ||
2452 | fixed_p = 0; | |
2453 | if (!EQ (val, Qunbound)) | |
2454 | { | |
2455 | fixed_p = !NILP (val); | |
177c0ea7 | 2456 | |
a34dfd12 GM |
2457 | if (fixed_p |
2458 | && ((EQ (val, Qheight) && width_p) | |
2459 | || (EQ (val, Qwidth) && !width_p))) | |
2460 | fixed_p = 0; | |
2461 | } | |
233a4a2c GM |
2462 | } |
2463 | ||
2464 | /* Can't tell if this one is resizable without looking at | |
2465 | siblings. If all siblings are fixed-size this one is too. */ | |
2466 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2467 | { | |
2468 | Lisp_Object child; | |
177c0ea7 | 2469 | |
233a4a2c GM |
2470 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2471 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2472 | break; | |
2473 | ||
2474 | if (NILP (child)) | |
2475 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2476 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2477 | break; | |
2478 | ||
2479 | if (NILP (child)) | |
2480 | fixed_p = 1; | |
2481 | } | |
2482 | } | |
2483 | else | |
2484 | fixed_p = 1; | |
2485 | ||
2486 | return fixed_p; | |
2487 | } | |
177c0ea7 | 2488 | |
233a4a2c GM |
2489 | |
2490 | /* Return the minimum size of window W, not taking fixed-width windows | |
2491 | into account. WIDTH_P non-zero means return the minimum width, | |
2492 | otherwise return the minimum height. If W is a combination window, | |
2493 | compute the minimum size from the minimum sizes of W's children. */ | |
2494 | ||
2495 | static int | |
2496 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2497 | struct window *w; |
2498 | int width_p; | |
2499 | { | |
233a4a2c | 2500 | struct window *c; |
c1636aa6 | 2501 | int size; |
177c0ea7 | 2502 | |
233a4a2c GM |
2503 | if (!NILP (w->hchild)) |
2504 | { | |
2505 | c = XWINDOW (w->hchild); | |
2506 | size = 0; | |
177c0ea7 | 2507 | |
233a4a2c GM |
2508 | if (width_p) |
2509 | { | |
2510 | /* The min width of a horizontal combination is | |
2511 | the sum of the min widths of its children. */ | |
2512 | while (c) | |
2513 | { | |
2514 | size += window_min_size_1 (c, width_p); | |
2515 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2516 | } | |
2517 | } | |
2518 | else | |
2519 | { | |
2520 | /* The min height a horizontal combination equals | |
2521 | the maximum of all min height of its children. */ | |
2522 | while (c) | |
2523 | { | |
2524 | int min_size = window_min_size_1 (c, width_p); | |
2525 | size = max (min_size, size); | |
2526 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2527 | } | |
2528 | } | |
2529 | } | |
2530 | else if (!NILP (w->vchild)) | |
2531 | { | |
2532 | c = XWINDOW (w->vchild); | |
2533 | size = 0; | |
177c0ea7 | 2534 | |
233a4a2c GM |
2535 | if (width_p) |
2536 | { | |
2537 | /* The min width of a vertical combination is | |
2538 | the maximum of the min widths of its children. */ | |
2539 | while (c) | |
2540 | { | |
2541 | int min_size = window_min_size_1 (c, width_p); | |
2542 | size = max (min_size, size); | |
2543 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2544 | } | |
2545 | } | |
2546 | else | |
2547 | { | |
2548 | /* The min height of a vertical combination equals | |
2549 | the sum of the min height of its children. */ | |
2550 | while (c) | |
2551 | { | |
2552 | size += window_min_size_1 (c, width_p); | |
2553 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2554 | } | |
2555 | } | |
2556 | } | |
c1636aa6 GM |
2557 | else |
2558 | { | |
233a4a2c GM |
2559 | if (width_p) |
2560 | size = window_min_width; | |
c1636aa6 | 2561 | else |
233a4a2c GM |
2562 | { |
2563 | if (MINI_WINDOW_P (w) | |
2564 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2565 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2566 | size = 1; |
2567 | else | |
2568 | size = window_min_height; | |
2569 | } | |
c1636aa6 GM |
2570 | } |
2571 | ||
2572 | return size; | |
2573 | } | |
2574 | ||
2575 | ||
233a4a2c GM |
2576 | /* Return the minimum size of window W, taking fixed-size windows into |
2577 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2578 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2579 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2580 | unless FIXED is null. */ | |
7ab12479 | 2581 | |
233a4a2c | 2582 | static int |
f984d4fc | 2583 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2584 | struct window *w; |
f984d4fc | 2585 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2586 | { |
2587 | int size, fixed_p; | |
2588 | ||
f984d4fc GM |
2589 | if (ignore_fixed_p) |
2590 | fixed_p = 0; | |
2591 | else | |
2592 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2593 | |
233a4a2c GM |
2594 | if (fixed) |
2595 | *fixed = fixed_p; | |
177c0ea7 | 2596 | |
233a4a2c | 2597 | if (fixed_p) |
949cf20f | 2598 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2599 | else |
2600 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2601 | |
233a4a2c GM |
2602 | return size; |
2603 | } | |
2604 | ||
2605 | ||
79fd290e | 2606 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2607 | Return 1 if window width is ok after adjustment; 0 if window |
2608 | is still too narrow. */ | |
2609 | ||
2610 | static int | |
2611 | adjust_window_margins (w) | |
2612 | struct window *w; | |
2613 | { | |
2614 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2615 | - WINDOW_FRINGE_COLS (w) | |
2616 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2617 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2618 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2619 | ||
2620 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2621 | return 1; | |
2622 | ||
2623 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2624 | return 0; | |
2625 | ||
2626 | /* Window's text area is too narrow, but reducing the window | |
2627 | margins will fix that. */ | |
2628 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2629 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2630 | { | |
2631 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2632 | w->left_margin_cols = w->right_margin_cols | |
2633 | = make_number (margin_cols/2); | |
2634 | else | |
2635 | w->right_margin_cols = make_number (margin_cols); | |
2636 | } | |
2637 | else | |
2638 | w->left_margin_cols = make_number (margin_cols); | |
2639 | return 1; | |
2640 | } | |
2641 | ||
0aa513ed JD |
2642 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2643 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2644 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2645 | can shrink is SHRINKABLE. | |
2646 | The minimum size a window can have is MIN_SIZE. | |
2647 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2648 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2649 | shrinking rows. | |
2650 | ||
2651 | This function returns an allocated array of new sizes that the caller | |
2652 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2653 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2654 | the second, and so on. | |
2655 | ||
2656 | This function tries to keep windows at least at the minimum size | |
2657 | and resize other windows before it resizes any window to zero (i.e. | |
2658 | delete that window). | |
2659 | ||
2660 | Windows are resized proportional to their size, so bigger windows | |
2661 | shrink more than smaller windows. */ | |
2662 | static int * | |
2663 | shrink_windows (total, size, nchildren, shrinkable, | |
2664 | min_size, resize_fixed_p, forward, width_p) | |
2665 | int total, size, nchildren, shrinkable, min_size; | |
2666 | int resize_fixed_p, width_p; | |
2667 | Lisp_Object forward; | |
2668 | { | |
2669 | int available_resize = 0; | |
2670 | int *new_sizes; | |
2671 | struct window *c; | |
2672 | Lisp_Object child; | |
2673 | int smallest = total; | |
2674 | int total_removed = 0; | |
2675 | int total_shrink = total - size; | |
2676 | int i; | |
2677 | ||
2678 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2679 | ||
2680 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2681 | { | |
2682 | int child_size; | |
2683 | ||
2684 | c = XWINDOW (child); | |
2685 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2686 | ||
2687 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2688 | new_sizes[i] = -1; | |
2689 | else | |
2690 | { | |
2691 | new_sizes[i] = child_size; | |
2692 | if (child_size > min_size) | |
2693 | available_resize += child_size - min_size; | |
2694 | } | |
2695 | } | |
2696 | /* We might need to shrink some windows to zero. Find the smallest | |
2697 | windows and set them to 0 until we can fulfil the new size. */ | |
2698 | ||
2699 | while (shrinkable > 1 && size + available_resize < total) | |
2700 | { | |
2701 | for (i = 0; i < nchildren; ++i) | |
2702 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2703 | smallest = new_sizes[i]; | |
2704 | ||
2705 | for (i = 0; i < nchildren; ++i) | |
2706 | if (new_sizes[i] == smallest) | |
2707 | { | |
2708 | /* Resize this window down to zero. */ | |
2709 | new_sizes[i] = 0; | |
2710 | if (smallest > min_size) | |
2711 | available_resize -= smallest - min_size; | |
2712 | available_resize += smallest; | |
2713 | --shrinkable; | |
2714 | total_removed += smallest; | |
2715 | ||
ef614e04 JD |
2716 | /* We don't know what the smallest is now. */ |
2717 | smallest = total; | |
2718 | ||
0aa513ed JD |
2719 | /* Out of for, just remove one window at the time and |
2720 | check again if we have enough space. */ | |
2721 | break; | |
2722 | } | |
2723 | } | |
2724 | ||
2725 | /* Now, calculate the new sizes. Try to shrink each window | |
2726 | proportional to its size. */ | |
2727 | for (i = 0; i < nchildren; ++i) | |
2728 | { | |
2729 | if (new_sizes[i] > min_size) | |
2730 | { | |
2731 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2732 | if (new_sizes[i] - to_shrink < min_size) | |
2733 | to_shrink = new_sizes[i] - min_size; | |
2734 | new_sizes[i] -= to_shrink; | |
2735 | total_removed += to_shrink; | |
2736 | } | |
2737 | } | |
2738 | ||
2739 | /* Any reminder due to rounding, we just subtract from windows | |
2740 | that are left and still can be shrunk. */ | |
2741 | while (total_shrink > total_removed) | |
2742 | { | |
ef614e04 JD |
2743 | int nonzero_sizes = 0; |
2744 | int nonzero_idx = -1; | |
2745 | ||
2746 | for (i = 0; i < nchildren; ++i) | |
2747 | if (new_sizes[i] > 0) | |
2748 | { | |
2749 | ++nonzero_sizes; | |
2750 | nonzero_idx = i; | |
2751 | } | |
c49a0495 | 2752 | |
0aa513ed JD |
2753 | for (i = 0; i < nchildren; ++i) |
2754 | if (new_sizes[i] > min_size) | |
2755 | { | |
2756 | --new_sizes[i]; | |
2757 | ++total_removed; | |
2758 | ||
2759 | /* Out of for, just shrink one window at the time and | |
2760 | check again if we have enough space. */ | |
2761 | break; | |
2762 | } | |
ef614e04 JD |
2763 | |
2764 | ||
2765 | /* Special case, only one window left. */ | |
2766 | if (nonzero_sizes == 1) | |
2767 | break; | |
2768 | } | |
2769 | ||
2770 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2771 | while (total_shrink < total_removed) | |
2772 | { | |
2773 | for (i = 0; i < nchildren; ++i) | |
2774 | { | |
2775 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2776 | { | |
2777 | ++new_sizes[i]; | |
2778 | --total_removed; | |
2779 | break; | |
2780 | } | |
2781 | } | |
0aa513ed JD |
2782 | } |
2783 | ||
2784 | return new_sizes; | |
2785 | } | |
949cf20f | 2786 | |
233a4a2c GM |
2787 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2788 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2789 | keep their proportionate size relative to WINDOW. Propagate | |
2790 | WINDOW's top or left edge position to children. Delete windows | |
192c3131 RS |
2791 | that become too small unless NODELETE_P is non-zero. |
2792 | ||
2793 | If NODELETE_P is 2, that means we do delete windows that are | |
2794 | too small, even if they were too small before! */ | |
233a4a2c GM |
2795 | |
2796 | static void | |
2797 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2798 | Lisp_Object window; |
233a4a2c | 2799 | int size, width_p, nodelete_p; |
7ab12479 | 2800 | { |
233a4a2c GM |
2801 | struct window *w = XWINDOW (window); |
2802 | struct window *c; | |
2803 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 2804 | int old_size, min_size, safe_min_size; |
7ab12479 | 2805 | |
949cf20f KS |
2806 | /* We test nodelete_p != 2 and nodelete_p != 1 below, so it |
2807 | seems like it's too soon to do this here. ++KFS. */ | |
192c3131 RS |
2808 | if (nodelete_p == 2) |
2809 | nodelete_p = 0; | |
2810 | ||
a481b3ea | 2811 | check_min_window_sizes (); |
7ae2f10f | 2812 | size = max (0, size); |
177c0ea7 | 2813 | |
b5f05b50 GM |
2814 | /* If the window has been "too small" at one point, |
2815 | don't delete it for being "too small" in the future. | |
2816 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2817 | if (width_p) |
2818 | { | |
949cf20f | 2819 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 2820 | min_size = window_min_width; |
949cf20f KS |
2821 | /* Ensure that there is room for the scroll bar and fringes! |
2822 | We may reduce display margins though. */ | |
2823 | safe_min_size = (MIN_SAFE_WINDOW_WIDTH | |
2824 | + WINDOW_FRINGE_COLS (w) | |
2825 | + WINDOW_SCROLL_BAR_COLS (w)); | |
233a4a2c GM |
2826 | } |
2827 | else | |
2828 | { | |
949cf20f | 2829 | old_size = XINT (w->total_lines); |
233a4a2c | 2830 | min_size = window_min_height; |
949cf20f | 2831 | safe_min_size = MIN_SAFE_WINDOW_HEIGHT; |
233a4a2c | 2832 | } |
192c3131 RS |
2833 | |
2834 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
2835 | w->too_small_ok = Qt; |
2836 | ||
233a4a2c | 2837 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 2838 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 2839 | { |
b5f05b50 | 2840 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2841 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
2842 | if (min_size < safe_min_size) |
2843 | min_size = safe_min_size; | |
233a4a2c | 2844 | if (size < min_size) |
c1636aa6 GM |
2845 | { |
2846 | delete_window (window); | |
2847 | return; | |
2848 | } | |
7ab12479 JB |
2849 | } |
2850 | ||
233a4a2c | 2851 | /* Set redisplay hints. */ |
7ae2f10f GM |
2852 | w->last_modified = make_number (0); |
2853 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2854 | windows_or_buffers_changed++; |
7ae2f10f | 2855 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2856 | |
233a4a2c GM |
2857 | if (width_p) |
2858 | { | |
2859 | sideward = &w->vchild; | |
2860 | forward = &w->hchild; | |
949cf20f KS |
2861 | w->total_cols = make_number (size); |
2862 | adjust_window_margins (w); | |
233a4a2c GM |
2863 | } |
2864 | else | |
2865 | { | |
2866 | sideward = &w->hchild; | |
2867 | forward = &w->vchild; | |
949cf20f KS |
2868 | w->total_lines = make_number (size); |
2869 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
2870 | } |
2871 | ||
2872 | if (!NILP (*sideward)) | |
7ab12479 | 2873 | { |
233a4a2c | 2874 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2875 | { |
233a4a2c GM |
2876 | c = XWINDOW (child); |
2877 | if (width_p) | |
949cf20f | 2878 | c->left_col = w->left_col; |
233a4a2c | 2879 | else |
949cf20f | 2880 | c->top_line = w->top_line; |
233a4a2c | 2881 | size_window (child, size, width_p, nodelete_p); |
7ab12479 JB |
2882 | } |
2883 | } | |
233a4a2c | 2884 | else if (!NILP (*forward)) |
7ab12479 | 2885 | { |
233a4a2c GM |
2886 | int fixed_size, each, extra, n; |
2887 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2888 | int last_pos, first_pos, nchildren, total; |
0aa513ed | 2889 | int *new_sizes = NULL; |
233a4a2c GM |
2890 | |
2891 | /* Determine the fixed-size portion of the this window, and the | |
2892 | number of child windows. */ | |
8b6d9dc9 | 2893 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2894 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2895 | { |
8b6d9dc9 | 2896 | int child_size; |
177c0ea7 | 2897 | |
7ab12479 | 2898 | c = XWINDOW (child); |
949cf20f | 2899 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 2900 | total += child_size; |
177c0ea7 | 2901 | |
233a4a2c GM |
2902 | if (window_fixed_size_p (c, width_p, 0)) |
2903 | { | |
8b6d9dc9 | 2904 | fixed_size += child_size; |
233a4a2c GM |
2905 | ++nfixed; |
2906 | } | |
2907 | } | |
7ab12479 | 2908 | |
233a4a2c GM |
2909 | /* If the new size is smaller than fixed_size, or if there |
2910 | aren't any resizable windows, allow resizing fixed-size | |
2911 | windows. */ | |
2912 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2913 | ||
0aa513ed | 2914 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
2915 | value of extra takes care of rounding errors. */ |
2916 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
0aa513ed JD |
2917 | if (size < total && n > 1) |
2918 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
2919 | resize_fixed_p, *forward, width_p); | |
2920 | else | |
2921 | { | |
2922 | each = (size - total) / n; | |
2923 | extra = (size - total) - n * each; | |
2924 | } | |
233a4a2c GM |
2925 | |
2926 | /* Compute new children heights and edge positions. */ | |
949cf20f | 2927 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 2928 | last_pos = first_pos; |
0aa513ed | 2929 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
2930 | { |
2931 | int new_size, old_size; | |
177c0ea7 | 2932 | |
233a4a2c | 2933 | c = XWINDOW (child); |
949cf20f | 2934 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 2935 | new_size = old_size; |
7ab12479 | 2936 | |
233a4a2c GM |
2937 | /* The top or left edge position of this child equals the |
2938 | bottom or right edge of its predecessor. */ | |
2939 | if (width_p) | |
949cf20f | 2940 | c->left_col = make_number (last_pos); |
233a4a2c | 2941 | else |
949cf20f | 2942 | c->top_line = make_number (last_pos); |
7ab12479 | 2943 | |
233a4a2c GM |
2944 | /* If this child can be resized, do it. */ |
2945 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2946 | { | |
0aa513ed | 2947 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
2948 | extra = 0; |
2949 | } | |
177c0ea7 | 2950 | |
233a4a2c GM |
2951 | /* Set new height. Note that size_window also propagates |
2952 | edge positions to children, so it's not a no-op if we | |
2953 | didn't change the child's size. */ | |
2954 | size_window (child, new_size, width_p, 1); | |
2955 | ||
2956 | /* Remember the bottom/right edge position of this child; it | |
2957 | will be used to set the top/left edge of the next child. */ | |
0aa513ed | 2958 | last_pos += new_size; |
7ab12479 | 2959 | } |
233a4a2c | 2960 | |
0aa513ed JD |
2961 | if (new_sizes) xfree (new_sizes); |
2962 | ||
233a4a2c GM |
2963 | /* We should have covered the parent exactly with child windows. */ |
2964 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 2965 | |
7ab12479 | 2966 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2967 | if (!nodelete_p) |
2968 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2969 | { |
233a4a2c GM |
2970 | int child_size; |
2971 | c = XWINDOW (child); | |
949cf20f | 2972 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
192c3131 | 2973 | size_window (child, child_size, width_p, 2); |
7ab12479 JB |
2974 | } |
2975 | } | |
2976 | } | |
2977 | ||
233a4a2c GM |
2978 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2979 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2980 | that become too small in the process. (The caller should check | |
2981 | later and do so if appropriate.) */ | |
7ab12479 | 2982 | |
5e14b1fc | 2983 | void |
233a4a2c | 2984 | set_window_height (window, height, nodelete) |
7ab12479 | 2985 | Lisp_Object window; |
233a4a2c | 2986 | int height; |
7ab12479 JB |
2987 | int nodelete; |
2988 | { | |
233a4a2c GM |
2989 | size_window (window, height, 0, nodelete); |
2990 | } | |
7ab12479 | 2991 | |
7ab12479 | 2992 | |
233a4a2c GM |
2993 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2994 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2995 | that become too small in the process. (The caller should check | |
2996 | later and do so if appropriate.) */ | |
7ab12479 | 2997 | |
233a4a2c GM |
2998 | void |
2999 | set_window_width (window, width, nodelete) | |
3000 | Lisp_Object window; | |
3001 | int width; | |
3002 | int nodelete; | |
3003 | { | |
3004 | size_window (window, width, 1, nodelete); | |
7ab12479 | 3005 | } |
233a4a2c | 3006 | |
cdbc7fec KS |
3007 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3008 | ||
3009 | void | |
3010 | change_window_heights (window, n) | |
3011 | Lisp_Object window; | |
3012 | int n; | |
3013 | { | |
3014 | struct window *w = XWINDOW (window); | |
3015 | ||
949cf20f KS |
3016 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3017 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3018 | |
949cf20f KS |
3019 | if (INTEGERP (w->orig_top_line)) |
3020 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3021 | if (INTEGERP (w->orig_total_lines)) | |
3022 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3023 | |
3024 | /* Handle just the top child in a vertical split. */ | |
3025 | if (!NILP (w->vchild)) | |
3026 | change_window_heights (w->vchild, n); | |
3027 | ||
3028 | /* Adjust all children in a horizontal split. */ | |
3029 | for (window = w->hchild; !NILP (window); window = w->next) | |
3030 | { | |
3031 | w = XWINDOW (window); | |
3032 | change_window_heights (window, n); | |
3033 | } | |
3034 | } | |
3035 | ||
7ab12479 | 3036 | \f |
1d8d96fa | 3037 | int window_select_count; |
7ab12479 | 3038 | |
5b03d3c0 RS |
3039 | Lisp_Object |
3040 | Fset_window_buffer_unwind (obuf) | |
3041 | Lisp_Object obuf; | |
3042 | { | |
3043 | Fset_buffer (obuf); | |
3044 | return Qnil; | |
3045 | } | |
3046 | ||
56613f06 SM |
3047 | EXFUN (Fset_window_fringes, 4); |
3048 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3049 | |
5500c422 GM |
3050 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3051 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3052 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3053 | margins, fringes, and scroll-bar settings of the window are not | |
3054 | reset from the buffer's local settings. */ | |
7ab12479 | 3055 | |
5500c422 | 3056 | void |
949cf20f | 3057 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3058 | Lisp_Object window, buffer; |
949cf20f | 3059 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3060 | { |
3061 | struct window *w = XWINDOW (window); | |
3062 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3063 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3064 | |
3065 | w->buffer = buffer; | |
86e48436 RS |
3066 | |
3067 | if (EQ (window, selected_window)) | |
5500c422 | 3068 | b->last_selected_window = window; |
beb4e312 | 3069 | |
c49a0495 KS |
3070 | /* Let redisplay errors through. */ |
3071 | b->display_error_modiff = 0; | |
3072 | ||
beb4e312 | 3073 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3074 | if (INTEGERP (b->display_count)) |
3075 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3076 | b->display_time = Fcurrent_time (); | |
86e48436 | 3077 | |
d834a2e9 | 3078 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3079 | XSETFASTINT (w->window_end_vpos, 0); |
3080 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3081 | w->window_end_valid = Qnil; |
1c686c99 | 3082 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3083 | w->vscroll = 0; |
5500c422 | 3084 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3085 | set_marker_restricted (w->start, |
5500c422 | 3086 | make_number (b->last_window_start), |
7ab12479 JB |
3087 | buffer); |
3088 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3089 | w->force_start = Qnil; |
d834a2e9 | 3090 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3091 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3092 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3093 | |
3094 | /* We must select BUFFER for running the window-scroll-functions. | |
3095 | If WINDOW is selected, switch permanently. | |
3096 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3097 | if (EQ (window, selected_window)) |
3098 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3099 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3100 | because that might itself be a local variable. */ | |
3101 | else if (window_initialized) | |
3102 | { | |
3103 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3104 | Fset_buffer (buffer); | |
3105 | } | |
3106 | ||
949cf20f KS |
3107 | if (!keep_margins_p) |
3108 | { | |
3109 | /* Set left and right marginal area width etc. from buffer. */ | |
3110 | ||
79fd290e | 3111 | /* This may call adjust_window_margins three times, so |
949cf20f | 3112 | temporarily disable window margins. */ |
3834380d KS |
3113 | Lisp_Object save_left = w->left_margin_cols; |
3114 | Lisp_Object save_right = w->right_margin_cols; | |
3115 | ||
949cf20f KS |
3116 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3117 | ||
3118 | Fset_window_fringes (window, | |
3119 | b->left_fringe_width, b->right_fringe_width, | |
3120 | b->fringes_outside_margins); | |
3121 | ||
3122 | Fset_window_scroll_bars (window, | |
3123 | b->scroll_bar_width, | |
3124 | b->vertical_scroll_bar_type, Qnil); | |
3125 | ||
3834380d KS |
3126 | w->left_margin_cols = save_left; |
3127 | w->right_margin_cols = save_right; | |
3128 | ||
949cf20f KS |
3129 | Fset_window_margins (window, |
3130 | b->left_margin_cols, b->right_margin_cols); | |
3131 | } | |
7ab12479 | 3132 | |
5500c422 GM |
3133 | if (run_hooks_p) |
3134 | { | |
3135 | if (! NILP (Vwindow_scroll_functions)) | |
3136 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3137 | Fmarker_position (w->start)); | |
3138 | ||
3139 | if (! NILP (Vwindow_configuration_change_hook) | |
3140 | && ! NILP (Vrun_hooks)) | |
3141 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3142 | } | |
543f5fb1 | 3143 | |
5b03d3c0 | 3144 | unbind_to (count, Qnil); |
5500c422 | 3145 | } |
5b03d3c0 | 3146 | |
5500c422 | 3147 | |
949cf20f | 3148 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3149 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3150 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3151 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3152 | display margins, fringe widths, and scroll bar settings are maintained; |
3153 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3154 | defaults. |
3155 | ||
3156 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3157 | (window, buffer, keep_margins) |
56613f06 | 3158 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3159 | { |
3160 | register Lisp_Object tem; | |
3161 | register struct window *w = decode_window (window); | |
5500c422 | 3162 | |
bed0c171 | 3163 | XSETWINDOW (window, w); |
5500c422 | 3164 | buffer = Fget_buffer (buffer); |
b7826503 | 3165 | CHECK_BUFFER (buffer); |
5500c422 GM |
3166 | |
3167 | if (NILP (XBUFFER (buffer)->name)) | |
3168 | error ("Attempt to display deleted buffer"); | |
3169 | ||
3170 | tem = w->buffer; | |
3171 | if (NILP (tem)) | |
3172 | error ("Window is deleted"); | |
3173 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3174 | is first being set up. */ | |
3175 | { | |
3176 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3177 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3178 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3179 | |
3180 | unshow_buffer (w); | |
3181 | } | |
3182 | ||
949cf20f | 3183 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3184 | return Qnil; |
3185 | } | |
3186 | ||
2d0834cc SM |
3187 | /* Note that selected_window can be nil |
3188 | when this is called from Fset_window_configuration. */ | |
3189 | ||
14d87dc9 | 3190 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3191 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3192 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3193 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3194 | Optional second arg NORECORD non-nil means |
3195 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3196 | |
fdb82f93 PJ |
3197 | Note that the main editor command loop |
3198 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3199 | (window, norecord) |
3200 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3201 | { |
3202 | register struct window *w; | |
719eaeb1 | 3203 | register struct window *ow; |
1ae1a37d | 3204 | struct frame *sf; |
7ab12479 | 3205 | |
b7826503 | 3206 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3207 | |
3208 | w = XWINDOW (window); | |
50e88778 | 3209 | w->frozen_window_start_p = 0; |
7ab12479 | 3210 | |
2a1893f4 SM |
3211 | ++window_select_count; |
3212 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3213 | if (EQ (window, selected_window)) |
3214 | return window; | |
3215 | ||
a46c0153 RS |
3216 | /* Store the current buffer's actual point into the |
3217 | old selected window. It belongs to that window, | |
3218 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3219 | if (!NILP (selected_window)) |
3220 | { | |
3221 | ow = XWINDOW (selected_window); | |
3222 | if (! NILP (ow->buffer)) | |
3223 | set_marker_both (ow->pointm, ow->buffer, | |
3224 | BUF_PT (XBUFFER (ow->buffer)), | |
3225 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3226 | } | |
7ab12479 JB |
3227 | |
3228 | selected_window = window; | |
1ae1a37d | 3229 | sf = SELECTED_FRAME (); |
d1755117 RS |
3230 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
3231 | { | |
3232 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3233 | /* Use this rather than Fhandle_switch_frame | |
3234 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3235 | move around in the state where a minibuffer in a separate | |
3236 | frame is active. */ | |
c869384d | 3237 | Fselect_frame (WINDOW_FRAME (w)); |
d1755117 RS |
3238 | } |
3239 | else | |
1ae1a37d | 3240 | sf->selected_window = window; |
7ab12479 | 3241 | |
14d87dc9 | 3242 | if (NILP (norecord)) |
b7354ddf | 3243 | record_buffer (w->buffer); |
7ab12479 JB |
3244 | Fset_buffer (w->buffer); |
3245 | ||
86e48436 RS |
3246 | XBUFFER (w->buffer)->last_selected_window = window; |
3247 | ||
7ab12479 JB |
3248 | /* Go to the point recorded in the window. |
3249 | This is important when the buffer is in more | |
3250 | than one window. It also matters when | |
3251 | redisplay_window has altered point after scrolling, | |
3252 | because it makes the change only in the window. */ | |
3253 | { | |
3254 | register int new_point = marker_position (w->pointm); | |
3255 | if (new_point < BEGV) | |
3256 | SET_PT (BEGV); | |
a9c95e08 | 3257 | else if (new_point > ZV) |
7ab12479 JB |
3258 | SET_PT (ZV); |
3259 | else | |
3260 | SET_PT (new_point); | |
3261 | } | |
3262 | ||
3263 | windows_or_buffers_changed++; | |
3264 | return window; | |
3265 | } | |
14d87dc9 SM |
3266 | |
3267 | static Lisp_Object | |
3268 | select_window_norecord (window) | |
3269 | Lisp_Object window; | |
3270 | { | |
3271 | return Fselect_window (window, Qt); | |
3272 | } | |
b7354ddf | 3273 | \f |
441a127e RS |
3274 | /* Deiconify the frame containing the window WINDOW, |
3275 | unless it is the selected frame; | |
3276 | then return WINDOW. | |
3277 | ||
3278 | The reason for the exception for the selected frame | |
3279 | is that it seems better not to change the selected frames visibility | |
3280 | merely because of displaying a different buffer in it. | |
3281 | The deiconification is useful when a buffer gets shown in | |
3282 | another frame that you were not using lately. */ | |
d07f802a RS |
3283 | |
3284 | static Lisp_Object | |
3285 | display_buffer_1 (window) | |
3286 | Lisp_Object window; | |
3287 | { | |
1ae1a37d GM |
3288 | Lisp_Object frame = XWINDOW (window)->frame; |
3289 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3290 | |
d07f802a | 3291 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3292 | |
2d0834cc SM |
3293 | if (EQ (frame, selected_frame)) |
3294 | ; /* Assume the selected frame is already visible enough. */ | |
3295 | else if (minibuf_level > 0 | |
3296 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3297 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3298 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3299 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3300 | else | |
60117126 RS |
3301 | { |
3302 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3303 | Fmake_frame_visible (frame); |
37962e60 | 3304 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3305 | Fraise_frame (frame); |
60117126 | 3306 | } |
177c0ea7 | 3307 | |
d07f802a RS |
3308 | return window; |
3309 | } | |
3310 | ||
4628f7a4 | 3311 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3312 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3313 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3314 | special frame for that buffer using the default frame parameters. | |
3315 | ||
3316 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3317 | to make a frame for that buffer. |
3318 | The variables `special-display-buffer-names' | |
3319 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3320 | (buffer_name) |
4628f7a4 EN |
3321 | Lisp_Object buffer_name; |
3322 | { | |
3323 | Lisp_Object tem; | |
3324 | ||
b7826503 | 3325 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3326 | |
3327 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3328 | if (!NILP (tem)) | |
3329 | return Qt; | |
3330 | ||
3331 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3332 | if (!NILP (tem)) | |
3333 | return XCDR (tem); | |
3334 | ||
3335 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3336 | { | |
3337 | Lisp_Object car = XCAR (tem); | |
3338 | if (STRINGP (car) | |
3339 | && fast_string_match (car, buffer_name) >= 0) | |
3340 | return Qt; | |
3341 | else if (CONSP (car) | |
3342 | && STRINGP (XCAR (car)) | |
3343 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3344 | return XCDR (car); |
4628f7a4 EN |
3345 | } |
3346 | return Qnil; | |
177c0ea7 | 3347 | } |
4628f7a4 EN |
3348 | |
3349 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3350 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3351 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3352 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3353 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3354 | (buffer_name) | |
4628f7a4 EN |
3355 | Lisp_Object buffer_name; |
3356 | { | |
3357 | Lisp_Object tem; | |
3358 | ||
b7826503 | 3359 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3360 | |
3361 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3362 | if (!NILP (tem)) | |
3363 | return Qt; | |
3364 | ||
3365 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3366 | if (!NILP (tem)) | |
3367 | return Qt; | |
3368 | ||
3369 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3370 | { | |
3371 | Lisp_Object car = XCAR (tem); | |
3372 | if (STRINGP (car) | |
3373 | && fast_string_match (car, buffer_name) >= 0) | |
3374 | return Qt; | |
3375 | else if (CONSP (car) | |
3376 | && STRINGP (XCAR (car)) | |
3377 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3378 | return Qt; | |
3379 | } | |
3380 | return Qnil; | |
3381 | } | |
3382 | ||
fdb82f93 | 3383 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3384 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3385 | "BDisplay buffer: \nP", |
3386 | doc: /* Make BUFFER appear in some window but don't select it. | |
c2755926 LT |
3387 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
3388 | a buffer. | |
fdb82f93 PJ |
3389 | If BUFFER is shown already in some window, just use that one, |
3390 | unless the window is the selected window and the optional second | |
3391 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3392 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3393 | Returns the window displaying BUFFER. | |
079d288f | 3394 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3395 | displaying BUFFER, then simply raise that frame. |
3396 | ||
9a7e95f3 RS |
3397 | The variables `special-display-buffer-names', |
3398 | `special-display-regexps', `same-window-buffer-names', and | |
3399 | `same-window-regexps' customize how certain buffer names are handled. | |
3400 | The latter two take effect only if NOT-THIS-WINDOW is t. | |
fdb82f93 PJ |
3401 | |
3402 | If optional argument FRAME is `visible', search all visible frames. | |
3403 | If FRAME is 0, search all visible and iconified frames. | |
3404 | If FRAME is t, search all frames. | |
3405 | If FRAME is a frame, search only that frame. | |
3406 | If FRAME is nil, search only the selected frame | |
3407 | (actually the last nonminibuffer frame), | |
3408 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3409 | which means search visible and iconified frames. | |
3410 | ||
876e2665 GM |
3411 | If a full-width window on a splittable frame is available to display |
3412 | the buffer, it may be split, subject to the value of the variable | |
3413 | `split-height-threshold'. | |
3414 | ||
fdb82f93 PJ |
3415 | If `even-window-heights' is non-nil, window heights will be evened out |
3416 | if displaying the buffer causes two vertically adjacent windows to be | |
3417 | displayed. */) | |
3418 | (buffer, not_this_window, frame) | |
53f76081 | 3419 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3420 | { |
aee631c2 | 3421 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3422 | struct frame *f; |
7ab12479 | 3423 | |
aee631c2 | 3424 | swp = Qnil; |
7ab12479 | 3425 | buffer = Fget_buffer (buffer); |
b7826503 | 3426 | CHECK_BUFFER (buffer); |
7ab12479 | 3427 | |
265a9e55 | 3428 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3429 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3430 | ||
265a9e55 | 3431 | if (NILP (not_this_window) |
7ab12479 | 3432 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3433 | return display_buffer_1 (selected_window); |
7ab12479 | 3434 | |
855d8627 RS |
3435 | /* See if the user has specified this buffer should appear |
3436 | in the selected window. */ | |
3437 | if (NILP (not_this_window)) | |
3438 | { | |
aee631c2 RS |
3439 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3440 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3441 | { |
3442 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3443 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3444 | } |
855d8627 RS |
3445 | } |
3446 | ||
079d288f | 3447 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3448 | look for a window showing BUFFER on any visible or iconified frame. |
3449 | Otherwise search only the current frame. */ | |
53f76081 RS |
3450 | if (! NILP (frame)) |
3451 | tem = frame; | |
9c3da604 GM |
3452 | else if (pop_up_frames |
3453 | || display_buffer_reuse_frames | |
3454 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3455 | XSETFASTINT (tem, 0); |
3456 | else | |
73dc5198 | 3457 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3458 | |
73dc5198 | 3459 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3460 | if (!NILP (window) |
3461 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3462 | return display_buffer_1 (window); |
7ab12479 | 3463 | |
a90712c2 | 3464 | /* Certain buffer names get special handling. */ |
aee631c2 | 3465 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3466 | { |
4628f7a4 EN |
3467 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3468 | if (EQ (tem, Qt)) | |
a90712c2 | 3469 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3470 | if (CONSP (tem)) |
3471 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3472 | } |
3473 | ||
44fa5b1e JB |
3474 | /* If there are no frames open that have more than a minibuffer, |
3475 | we need to create a new frame. */ | |
3476 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3477 | { |
a90712c2 | 3478 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3479 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3480 | return display_buffer_1 (window); |
7ab12479 | 3481 | } |
7ab12479 | 3482 | |
1ae1a37d | 3483 | f = SELECTED_FRAME (); |
43bad991 | 3484 | if (pop_up_windows |
1ae1a37d | 3485 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3486 | /* If the current frame is a special display frame, |
3487 | don't try to reuse its windows. */ | |
1ae1a37d | 3488 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3489 | { |
12cae7c0 KH |
3490 | Lisp_Object frames; |
3491 | ||
37962e60 | 3492 | frames = Qnil; |
1ae1a37d | 3493 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3494 | XSETFRAME (frames, last_nonminibuf_frame); |
a5731348 | 3495 | /* Don't try to create a window if we would get an error. */ |
7ab12479 JB |
3496 | if (split_height_threshold < window_min_height << 1) |
3497 | split_height_threshold = window_min_height << 1; | |
3498 | ||
cee67da9 RS |
3499 | /* Note that both Fget_largest_window and Fget_lru_window |
3500 | ignore minibuffers and dedicated windows. | |
3501 | This means they can return nil. */ | |
7ab12479 | 3502 | |
cee67da9 RS |
3503 | /* If the frame we would try to split cannot be split, |
3504 | try other frames. */ | |
1ae1a37d | 3505 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3506 | { |
3507 | /* Try visible frames first. */ | |
3508 | window = Fget_largest_window (Qvisible); | |
3509 | /* If that didn't work, try iconified frames. */ | |
3510 | if (NILP (window)) | |
3511 | window = Fget_largest_window (make_number (0)); | |
3512 | if (NILP (window)) | |
3513 | window = Fget_largest_window (Qt); | |
3514 | } | |
3515 | else | |
3516 | window = Fget_largest_window (frames); | |
3517 | ||
92cca945 RS |
3518 | /* If we got a tall enough full-width window that can be split, |
3519 | split it. */ | |
265a9e55 | 3520 | if (!NILP (window) |
92cca945 | 3521 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3522 | && window_height (window) >= split_height_threshold |
111e5992 | 3523 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3524 | window = Fsplit_window (window, Qnil, Qnil); |
3525 | else | |
3526 | { | |
1942f68f RS |
3527 | Lisp_Object upper, lower, other; |
3528 | ||
44fa5b1e | 3529 | window = Fget_lru_window (frames); |
92cca945 RS |
3530 | /* If the LRU window is selected, and big enough, |
3531 | and can be split, split it. */ | |
cee67da9 | 3532 | if (!NILP (window) |
92cca945 | 3533 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3534 | && (EQ (window, selected_window) |
3535 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3536 | && window_height (window) >= window_min_height << 1) |
3537 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3538 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3539 | |
cee67da9 | 3540 | /* Try visible frames first. */ |
48d9379d RS |
3541 | if (NILP (window)) |
3542 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3543 | if (NILP (window)) |
3544 | window = Fget_largest_window (Qvisible); | |
3545 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3546 | if (NILP (window)) |
3547 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3548 | if (NILP (window)) |
3549 | window = Fget_largest_window (make_number (0)); | |
3550 | /* Try invisible frames. */ | |
48d9379d RS |
3551 | if (NILP (window)) |
3552 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3553 | if (NILP (window)) |
3554 | window = Fget_largest_window (Qt); | |
3555 | /* As a last resort, make a new frame. */ | |
3556 | if (NILP (window)) | |
3557 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3558 | /* If window appears above or below another, |
3559 | even out their heights. */ | |
cac66e4f | 3560 | other = upper = lower = Qnil; |
1942f68f RS |
3561 | if (!NILP (XWINDOW (window)->prev)) |
3562 | other = upper = XWINDOW (window)->prev, lower = window; | |
3563 | if (!NILP (XWINDOW (window)->next)) | |
3564 | other = lower = XWINDOW (window)->next, upper = window; | |
3565 | if (!NILP (other) | |
6529ed87 | 3566 | && !NILP (Veven_window_heights) |
1942f68f | 3567 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3568 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3569 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3570 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3571 | { |
949cf20f KS |
3572 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3573 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3574 | enlarge_window (upper, |
949cf20f | 3575 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
f95284d2 | 3576 | 0, 0); |
1942f68f | 3577 | } |
7ab12479 JB |
3578 | } |
3579 | } | |
3580 | else | |
3581 | window = Fget_lru_window (Qnil); | |
3582 | ||
949cf20f | 3583 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3584 | return display_buffer_1 (window); |
7ab12479 JB |
3585 | } |
3586 | ||
e661376d KS |
3587 | |
3588 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3589 | 0, 1, 0, | |
3590 | doc: /* Force redisplay of all windows. | |
3591 | If optional arg OBJECT is a window, force redisplay of that window only. | |
0cc1039f | 3592 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
e661376d KS |
3593 | displaying that buffer. */) |
3594 | (object) | |
3595 | Lisp_Object object; | |
3596 | { | |
3597 | if (NILP (object)) | |
3598 | { | |
3599 | windows_or_buffers_changed++; | |
40c6ee74 | 3600 | update_mode_lines++; |
e661376d KS |
3601 | return Qt; |
3602 | } | |
3603 | ||
3604 | if (WINDOWP (object)) | |
3605 | { | |
40c6ee74 | 3606 | struct window *w = XWINDOW (object); |
e661376d | 3607 | mark_window_display_accurate (object, 0); |
40c6ee74 KS |
3608 | w->update_mode_line = Qt; |
3609 | if (BUFFERP (w->buffer)) | |
3610 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3611 | ++update_mode_lines; | |
e661376d KS |
3612 | return Qt; |
3613 | } | |
0cc1039f | 3614 | |
e661376d KS |
3615 | if (STRINGP (object)) |
3616 | object = Fget_buffer (object); | |
3617 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3618 | { | |
3619 | /* Walk all windows looking for buffer, and force update | |
3620 | of each of those windows. */ | |
3621 | ||
3622 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3623 | return NILP (object) ? Qnil : Qt; | |
3624 | } | |
3625 | ||
3626 | /* If nothing suitable was found, just return. | |
3627 | We could signal an error, but this feature will typically be used | |
3628 | asynchronously in timers or process sentinels, so we don't. */ | |
3629 | return Qnil; | |
3630 | } | |
3631 | ||
3632 | ||
7ab12479 JB |
3633 | void |
3634 | temp_output_buffer_show (buf) | |
3635 | register Lisp_Object buf; | |
3636 | { | |
3637 | register struct buffer *old = current_buffer; | |
3638 | register Lisp_Object window; | |
3639 | register struct window *w; | |
3640 | ||
bccd3dd1 RS |
3641 | XBUFFER (buf)->directory = current_buffer->directory; |
3642 | ||
7ab12479 | 3643 | Fset_buffer (buf); |
c6367666 | 3644 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3645 | BEGV = BEG; |
3646 | ZV = Z; | |
3647 | SET_PT (BEG); | |
06be4f85 | 3648 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3649 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3650 | #endif |
7ab12479 JB |
3651 | set_buffer_internal (old); |
3652 | ||
3653 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3654 | call1 (Vtemp_buffer_show_function, buf); | |
3655 | else | |
3656 | { | |
53f76081 | 3657 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3658 | |
1ae1a37d | 3659 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3660 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3661 | Vminibuf_scroll_window = window; |
3662 | w = XWINDOW (window); | |
d834a2e9 | 3663 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3664 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3665 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3666 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3667 | |
beb4e312 | 3668 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3669 | and its buffer current. */ |
2d0834cc SM |
3670 | |
3671 | if (!NILP (Vrun_hooks) | |
3672 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3673 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3674 | { |
2d0834cc SM |
3675 | int count = SPECPDL_INDEX (); |
3676 | Lisp_Object prev_window, prev_buffer; | |
3677 | prev_window = selected_window; | |
3678 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3679 | |
2d0834cc SM |
3680 | /* Select the window that was chosen, for running the hook. |
3681 | Note: Both Fselect_window and select_window_norecord may | |
3682 | set-buffer to the buffer displayed in the window, | |
3683 | so we need to save the current buffer. --stef */ | |
3684 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3685 | record_unwind_protect (select_window_norecord, prev_window); | |
3686 | Fselect_window (window, Qt); | |
3687 | Fset_buffer (w->buffer); | |
3688 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3689 | unbind_to (count, Qnil); | |
2cccc823 RS |
3690 | } |
3691 | } | |
7ab12479 JB |
3692 | } |
3693 | \f | |
dfcf069d | 3694 | static void |
7ab12479 JB |
3695 | make_dummy_parent (window) |
3696 | Lisp_Object window; | |
3697 | { | |
cffec418 | 3698 | Lisp_Object new; |
7ab12479 | 3699 | register struct window *o, *p; |
cffec418 | 3700 | int i; |
7ab12479 | 3701 | |
cffec418 | 3702 | o = XWINDOW (window); |
26605be9 | 3703 | p = allocate_window (); |
cffec418 | 3704 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3705 | ((struct Lisp_Vector *) p)->contents[i] |
3706 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3707 | XSETWINDOW (new, p); |
7ab12479 | 3708 | |
2a1893f4 SM |
3709 | ++sequence_number; |
3710 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3711 | |
3712 | /* Put new into window structure in place of window */ | |
3713 | replace_window (window, new); | |
3714 | ||
3715 | o->next = Qnil; | |
3716 | o->prev = Qnil; | |
3717 | o->vchild = Qnil; | |
3718 | o->hchild = Qnil; | |
3719 | o->parent = new; | |
3720 | ||
3721 | p->start = Qnil; | |
3722 | p->pointm = Qnil; | |
3723 | p->buffer = Qnil; | |
3724 | } | |
3725 | ||
3726 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3727 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3728 | WINDOW defaults to selected one and SIZE to half its size. | |
3729 | If optional third arg HORFLAG is non-nil, split side by side | |
3730 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 3731 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
3732 | Interactively, all arguments are nil. |
3733 | ||
3734 | Returns the newly created window (which is the lower or rightmost one). | |
3735 | The upper or leftmost window is the original one and remains selected. | |
3736 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) | |
fdb82f93 | 3737 | (window, size, horflag) |
77ae0fe3 | 3738 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3739 | { |
3740 | register Lisp_Object new; | |
3741 | register struct window *o, *p; | |
c0807608 | 3742 | FRAME_PTR fo; |
77ae0fe3 | 3743 | register int size_int; |
7ab12479 | 3744 | |
265a9e55 | 3745 | if (NILP (window)) |
7ab12479 JB |
3746 | window = selected_window; |
3747 | else | |
b7826503 | 3748 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3749 | |
3750 | o = XWINDOW (window); | |
c0807608 | 3751 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3752 | |
77ae0fe3 | 3753 | if (NILP (size)) |
7ab12479 | 3754 | { |
265a9e55 | 3755 | if (!NILP (horflag)) |
c0807608 | 3756 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3757 | the usable space in columns by two. |
3758 | We round up, since the left-hand window may include | |
3759 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3760 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3761 | else |
949cf20f | 3762 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3763 | } |
3764 | else | |
3765 | { | |
b7826503 | 3766 | CHECK_NUMBER (size); |
77ae0fe3 | 3767 | size_int = XINT (size); |
7ab12479 JB |
3768 | } |
3769 | ||
3770 | if (MINI_WINDOW_P (o)) | |
3771 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3772 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3773 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3774 | |
a481b3ea | 3775 | check_min_window_sizes (); |
7ab12479 | 3776 | |
265a9e55 | 3777 | if (NILP (horflag)) |
7ab12479 | 3778 | { |
77ae0fe3 KH |
3779 | if (size_int < window_min_height) |
3780 | error ("Window height %d too small (after splitting)", size_int); | |
949cf20f | 3781 | if (size_int + window_min_height > XFASTINT (o->total_lines)) |
37962e60 | 3782 | error ("Window height %d too small (after splitting)", |
949cf20f | 3783 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3784 | if (NILP (o->parent) |
3785 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3786 | { |
3787 | make_dummy_parent (window); | |
3788 | new = o->parent; | |
3789 | XWINDOW (new)->vchild = window; | |
3790 | } | |
3791 | } | |
3792 | else | |
3793 | { | |
77ae0fe3 KH |
3794 | if (size_int < window_min_width) |
3795 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e | 3796 | |
949cf20f | 3797 | if (size_int + window_min_width > XFASTINT (o->total_cols)) |
37962e60 | 3798 | error ("Window width %d too small (after splitting)", |
949cf20f | 3799 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3800 | if (NILP (o->parent) |
3801 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3802 | { |
3803 | make_dummy_parent (window); | |
3804 | new = o->parent; | |
3805 | XWINDOW (new)->hchild = window; | |
3806 | } | |
3807 | } | |
3808 | ||
3809 | /* Now we know that window's parent is a vertical combination | |
3810 | if we are dividing vertically, or a horizontal combination | |
3811 | if we are making side-by-side windows */ | |
3812 | ||
3813 | windows_or_buffers_changed++; | |
c0807608 | 3814 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3815 | new = make_window (); |
3816 | p = XWINDOW (new); | |
3817 | ||
44fa5b1e | 3818 | p->frame = o->frame; |
7ab12479 | 3819 | p->next = o->next; |
265a9e55 | 3820 | if (!NILP (p->next)) |
7ab12479 JB |
3821 | XWINDOW (p->next)->prev = new; |
3822 | p->prev = window; | |
3823 | o->next = new; | |
3824 | p->parent = o->parent; | |
3825 | p->buffer = Qt; | |
5500c422 GM |
3826 | p->window_end_valid = Qnil; |
3827 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3828 | |
949cf20f KS |
3829 | /* Duplicate special geometry settings. */ |
3830 | ||
3831 | p->left_margin_cols = o->left_margin_cols; | |
3832 | p->right_margin_cols = o->right_margin_cols; | |
3833 | p->left_fringe_width = o->left_fringe_width; | |
3834 | p->right_fringe_width = o->right_fringe_width; | |
3835 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3836 | p->scroll_bar_width = o->scroll_bar_width; | |
3837 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3838 | ||
44fa5b1e | 3839 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3840 | |
265a9e55 | 3841 | if (!NILP (horflag)) |
7ab12479 | 3842 | { |
949cf20f KS |
3843 | p->total_lines = o->total_lines; |
3844 | p->top_line = o->top_line; | |
3845 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3846 | XSETFASTINT (o->total_cols, size_int); | |
3847 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3848 | adjust_window_margins (p); | |
3849 | adjust_window_margins (o); | |
7ab12479 JB |
3850 | } |
3851 | else | |
3852 | { | |
949cf20f KS |
3853 | p->left_col = o->left_col; |
3854 | p->total_cols = o->total_cols; | |
3855 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3856 | XSETFASTINT (o->total_lines, size_int); | |
3857 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3858 | } |
3859 | ||
5500c422 GM |
3860 | /* Adjust glyph matrices. */ |
3861 | adjust_glyphs (fo); | |
949cf20f KS |
3862 | |
3863 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3864 | return new; |
3865 | } | |
3866 | \f | |
f95284d2 | 3867 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 3, "p", |
fdb82f93 PJ |
3868 | doc: /* Make current window ARG lines bigger. |
3869 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 RS |
3870 | Interactively, if an argument is not given, make the window one line bigger. |
3871 | ||
3872 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3873 | of the siblings above or to the left of the selected window. Only | |
3874 | siblings to the right or below are changed. */) | |
3875 | (arg, side, preserve_before) | |
3876 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3877 | { |
b7826503 | 3878 | CHECK_NUMBER (arg); |
f95284d2 RS |
3879 | enlarge_window (selected_window, XINT (arg), !NILP (side), |
3880 | !NILP (preserve_before)); | |
543f5fb1 RS |
3881 | |
3882 | if (! NILP (Vwindow_configuration_change_hook)) | |
3883 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3884 | ||
7ab12479 JB |
3885 | return Qnil; |
3886 | } | |
3887 | ||
a5731348 | 3888 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 3, "p", |
fdb82f93 PJ |
3889 | doc: /* Make current window ARG lines smaller. |
3890 | From program, optional second arg non-nil means shrink sideways arg columns. | |
a5731348 SM |
3891 | Interactively, if an argument is not given, make the window one line smaller. |
3892 | ||
3893 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3894 | of the siblings above or to the left of the selected window. Only | |
3895 | siblings to the right or below are changed. */) | |
3896 | (arg, side, preserve_before) | |
3897 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3898 | { |
b7826503 | 3899 | CHECK_NUMBER (arg); |
a5731348 SM |
3900 | enlarge_window (selected_window, -XINT (arg), !NILP (side), |
3901 | !NILP (preserve_before)); | |
543f5fb1 RS |
3902 | |
3903 | if (! NILP (Vwindow_configuration_change_hook)) | |
3904 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3905 | ||
7ab12479 JB |
3906 | return Qnil; |
3907 | } | |
3908 | ||
3909 | int | |
3910 | window_height (window) | |
3911 | Lisp_Object window; | |
3912 | { | |
3913 | register struct window *p = XWINDOW (window); | |
949cf20f | 3914 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3915 | } |
3916 | ||
3917 | int | |
3918 | window_width (window) | |
3919 | Lisp_Object window; | |
3920 | { | |
3921 | register struct window *p = XWINDOW (window); | |
949cf20f | 3922 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3923 | } |
3924 | ||
177c0ea7 | 3925 | |
7ab12479 | 3926 | #define CURBEG(w) \ |
949cf20f | 3927 | *(widthflag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3928 | |
3929 | #define CURSIZE(w) \ | |
949cf20f | 3930 | *(widthflag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 3931 | |
233a4a2c | 3932 | |
f95284d2 | 3933 | /* Enlarge WINDOW by DELTA. WIDTHFLAG non-zero means |
233a4a2c | 3934 | increase its width. Siblings of the selected window are resized to |
f95284d2 RS |
3935 | fulfill the size request. If they become too small in the process, |
3936 | they will be deleted. | |
3937 | ||
3938 | If PRESERVE_BEFORE is nonzero, that means don't alter | |
3939 | the siblings to the left or above WINDOW. */ | |
7ab12479 | 3940 | |
f984d4fc | 3941 | static void |
f95284d2 | 3942 | enlarge_window (window, delta, widthflag, preserve_before) |
86c8e823 | 3943 | Lisp_Object window; |
f95284d2 | 3944 | int delta, widthflag, preserve_before; |
7ab12479 | 3945 | { |
86c8e823 | 3946 | Lisp_Object parent, next, prev; |
233a4a2c | 3947 | struct window *p; |
3578db3c KR |
3948 | Lisp_Object *sizep; |
3949 | int maximum; | |
5e14b1fc AS |
3950 | int (*sizefun) P_ ((Lisp_Object)) |
3951 | = widthflag ? window_width : window_height; | |
233a4a2c | 3952 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3953 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3954 | |
233a4a2c GM |
3955 | /* Check values of window_min_width and window_min_height for |
3956 | validity. */ | |
a481b3ea | 3957 | check_min_window_sizes (); |
7ab12479 | 3958 | |
233a4a2c | 3959 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3960 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3961 | error ("Window is not resizable"); | |
3962 | ||
3963 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3964 | while (1) |
3965 | { | |
3966 | p = XWINDOW (window); | |
3967 | parent = p->parent; | |
177c0ea7 | 3968 | |
265a9e55 | 3969 | if (NILP (parent)) |
7ab12479 JB |
3970 | { |
3971 | if (widthflag) | |
3972 | error ("No other window to side of this one"); | |
3973 | break; | |
3974 | } | |
177c0ea7 | 3975 | |
233a4a2c GM |
3976 | if (widthflag |
3977 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3978 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3979 | break; |
177c0ea7 | 3980 | |
7ab12479 JB |
3981 | window = parent; |
3982 | } | |
3983 | ||
05c2896a | 3984 | sizep = &CURSIZE (window); |
7ab12479 | 3985 | |
7ab12479 JB |
3986 | { |
3987 | register int maxdelta; | |
7ab12479 | 3988 | |
f95284d2 RS |
3989 | /* Compute the maximum size increment this window can have. */ |
3990 | ||
3991 | if (preserve_before) | |
3992 | { | |
3993 | if (!NILP (parent)) | |
3994 | { | |
3995 | maxdelta = (*sizefun) (parent) - XINT (*sizep); | |
3996 | /* Subtract size of siblings before, since we can't take that. */ | |
1ab964d7 | 3997 | maxdelta -= XINT (CURBEG (window)) - XINT (CURBEG (parent)); |
f95284d2 RS |
3998 | } |
3999 | else | |
4000 | maxdelta = (!NILP (p->next) ? ((*sizefun) (p->next) | |
4001 | - window_min_size (XWINDOW (p->next), | |
4002 | widthflag, 0, 0)) | |
4003 | : (delta = 0)); | |
4004 | } | |
4005 | else | |
4006 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) | |
4007 | /* This is a main window followed by a minibuffer. */ | |
4008 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4009 | - window_min_size (XWINDOW (p->next), | |
4010 | widthflag, 0, 0)) | |
4011 | /* This is a minibuffer following a main window. */ | |
4012 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4013 | - window_min_size (XWINDOW (p->prev), | |
4014 | widthflag, 0, 0)) | |
4015 | /* This is a frame with only one window, a minibuffer-only | |
4016 | or a minibufferless frame. */ | |
4017 | : (delta = 0)); | |
7ab12479 JB |
4018 | |
4019 | if (delta > maxdelta) | |
4020 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4021 | the full frame, or make the only window aside from the |
4022 | minibuffer the full frame. */ | |
7ab12479 | 4023 | delta = maxdelta; |
6b54027b | 4024 | } |
d5783c40 | 4025 | |
3578db3c | 4026 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 4027 | { |
543f5fb1 | 4028 | delete_window (window); |
d5783c40 | 4029 | return; |
6b54027b RS |
4030 | } |
4031 | ||
4032 | if (delta == 0) | |
4033 | return; | |
7ab12479 | 4034 | |
f95284d2 | 4035 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
4036 | maximum = 0; |
4037 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 4038 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 4039 | widthflag, 0, 0); |
f95284d2 RS |
4040 | if (! preserve_before) |
4041 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
4042 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
4043 | widthflag, 0, 0); | |
db98a733 | 4044 | |
f95284d2 | 4045 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4046 | if (delta <= maximum) |
7ab12479 | 4047 | { |
db98a733 RS |
4048 | Lisp_Object first_unaffected; |
4049 | Lisp_Object first_affected; | |
233a4a2c | 4050 | int fixed_p; |
db98a733 RS |
4051 | |
4052 | next = p->next; | |
4053 | prev = p->prev; | |
4054 | first_affected = window; | |
4055 | /* Look at one sibling at a time, | |
4056 | moving away from this window in both directions alternately, | |
4057 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 RS |
4058 | while (delta != 0 |
4059 | && (!NILP (next) || (!preserve_before && !NILP (prev)))) | |
db98a733 | 4060 | { |
db98a733 RS |
4061 | if (! NILP (next)) |
4062 | { | |
c1636aa6 | 4063 | int this_one = ((*sizefun) (next) |
233a4a2c | 4064 | - window_min_size (XWINDOW (next), |
f984d4fc | 4065 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
4066 | if (!fixed_p) |
4067 | { | |
4068 | if (this_one > delta) | |
4069 | this_one = delta; | |
177c0ea7 | 4070 | |
233a4a2c | 4071 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4072 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4073 | |
233a4a2c GM |
4074 | delta -= this_one; |
4075 | } | |
177c0ea7 | 4076 | |
db98a733 RS |
4077 | next = XWINDOW (next)->next; |
4078 | } | |
177c0ea7 | 4079 | |
db98a733 RS |
4080 | if (delta == 0) |
4081 | break; | |
177c0ea7 | 4082 | |
f95284d2 | 4083 | if (!preserve_before && ! NILP (prev)) |
db98a733 | 4084 | { |
c1636aa6 | 4085 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4086 | - window_min_size (XWINDOW (prev), |
f984d4fc | 4087 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
4088 | if (!fixed_p) |
4089 | { | |
4090 | if (this_one > delta) | |
4091 | this_one = delta; | |
177c0ea7 | 4092 | |
233a4a2c | 4093 | first_affected = prev; |
177c0ea7 | 4094 | |
233a4a2c | 4095 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4096 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4097 | |
4098 | delta -= this_one; | |
4099 | } | |
177c0ea7 | 4100 | |
db98a733 RS |
4101 | prev = XWINDOW (prev)->prev; |
4102 | } | |
4103 | } | |
4104 | ||
233a4a2c GM |
4105 | xassert (delta == 0); |
4106 | ||
db98a733 RS |
4107 | /* Now recalculate the edge positions of all the windows affected, |
4108 | based on the new sizes. */ | |
4109 | first_unaffected = next; | |
4110 | prev = first_affected; | |
4111 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4112 | prev = next, next = XWINDOW (next)->next) | |
4113 | { | |
3578db3c | 4114 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4115 | /* This does not change size of NEXT, |
4116 | but it propagates the new top edge to its children */ | |
4117 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4118 | } | |
7ab12479 JB |
4119 | } |
4120 | else | |
4121 | { | |
4122 | register int delta1; | |
4123 | register int opht = (*sizefun) (parent); | |
4124 | ||
3578db3c | 4125 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4126 | { |
4127 | /* If trying to grow this window to or beyond size of the parent, | |
4128 | just delete all the sibling windows. */ | |
dc1ab1ee | 4129 | Lisp_Object start, tem, next; |
daf516d3 | 4130 | |
dc1ab1ee RS |
4131 | start = XWINDOW (parent)->vchild; |
4132 | if (NILP (start)) | |
4133 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4134 | |
dc1ab1ee RS |
4135 | /* Delete any siblings that come after WINDOW. */ |
4136 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4137 | while (! NILP (tem)) |
4138 | { | |
4139 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4140 | delete_window (tem); |
4141 | tem = next; | |
4142 | } | |
4143 | ||
4144 | /* Delete any siblings that come after WINDOW. | |
4145 | Note that if START is not WINDOW, then WINDOW still | |
4146 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4147 | tem = start; | |
4148 | while (! EQ (tem, window)) | |
4149 | { | |
4150 | next = XWINDOW (tem)->next; | |
4151 | delete_window (tem); | |
daf516d3 RS |
4152 | tem = next; |
4153 | } | |
4154 | } | |
7ab12479 | 4155 | else |
233a4a2c GM |
4156 | { |
4157 | /* Otherwise, make delta1 just right so that if we add | |
4158 | delta1 lines to this window and to the parent, and then | |
4159 | shrink the parent back to its original size, the new | |
4160 | proportional size of this window will increase by delta. | |
4161 | ||
4162 | The function size_window will compute the new height h' | |
4163 | of the window from delta1 as: | |
177c0ea7 | 4164 | |
233a4a2c GM |
4165 | e = delta1/n |
4166 | x = delta1 - delta1/n * n for the 1st resizable child | |
4167 | h' = h + e + x | |
4168 | ||
4169 | where n is the number of children that can be resized. | |
4170 | We can ignore x by choosing a delta1 that is a multiple of | |
4171 | n. We want the height of this window to come out as | |
177c0ea7 | 4172 | |
233a4a2c GM |
4173 | h' = h + delta |
4174 | ||
4175 | So, delta1 must be | |
177c0ea7 | 4176 | |
233a4a2c GM |
4177 | h + e = h + delta |
4178 | delta1/n = delta | |
4179 | delta1 = n * delta. | |
4180 | ||
a5731348 | 4181 | The number of children n equals the number of resizable |
233a4a2c | 4182 | children of this window + 1 because we know window itself |
6e0dca3d | 4183 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4184 | |
4185 | struct window *w = XWINDOW (window); | |
4186 | Lisp_Object s; | |
4187 | int n = 1; | |
4188 | ||
4189 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
4190 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
4191 | ++n; | |
4192 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
4193 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
4194 | ++n; | |
4195 | ||
4196 | delta1 = n * delta; | |
7ab12479 | 4197 | |
daf516d3 RS |
4198 | /* Add delta1 lines or columns to this window, and to the parent, |
4199 | keeping things consistent while not affecting siblings. */ | |
4200 | XSETINT (CURSIZE (parent), opht + delta1); | |
4201 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4202 | ||
4203 | /* Squeeze out delta1 lines or columns from our parent, | |
4204 | shriking this window and siblings proportionately. | |
4205 | This brings parent back to correct size. | |
4206 | Delta1 was calculated so this makes this window the desired size, | |
4207 | taking it all out of the siblings. */ | |
4208 | (*setsizefun) (parent, opht, 0); | |
4209 | ||
4210 | } | |
7ab12479 JB |
4211 | } |
4212 | ||
d834a2e9 | 4213 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4214 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4215 | |
4216 | /* Adjust glyph matrices. */ | |
4217 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4218 | } |
c1636aa6 | 4219 | |
7ab12479 JB |
4220 | #undef CURBEG |
4221 | #undef CURSIZE | |
4222 | ||
5500c422 | 4223 | |
f984d4fc GM |
4224 | \f |
4225 | /*********************************************************************** | |
4226 | Resizing Mini-Windows | |
4227 | ***********************************************************************/ | |
4228 | ||
4229 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4230 | |
43b4a21f GM |
4231 | enum save_restore_action |
4232 | { | |
4233 | CHECK_ORIG_SIZES, | |
4234 | SAVE_ORIG_SIZES, | |
4235 | RESTORE_ORIG_SIZES | |
4236 | }; | |
4237 | ||
177c0ea7 | 4238 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4239 | enum save_restore_action)); |
f984d4fc GM |
4240 | |
4241 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4242 | from lowest windows first. */ | |
4243 | ||
4244 | static void | |
4245 | shrink_window_lowest_first (w, height) | |
4246 | struct window *w; | |
4247 | int height; | |
4248 | { | |
4249 | struct window *c; | |
4250 | Lisp_Object child; | |
4251 | int old_height; | |
4252 | ||
4253 | xassert (!MINI_WINDOW_P (w)); | |
4254 | ||
4255 | /* Set redisplay hints. */ | |
4256 | XSETFASTINT (w->last_modified, 0); | |
4257 | XSETFASTINT (w->last_overlay_modified, 0); | |
4258 | windows_or_buffers_changed++; | |
4259 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4260 | ||
949cf20f KS |
4261 | old_height = XFASTINT (w->total_lines); |
4262 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4263 | |
4264 | if (!NILP (w->hchild)) | |
4265 | { | |
4266 | for (child = w->hchild; !NILP (child); child = c->next) | |
4267 | { | |
4268 | c = XWINDOW (child); | |
949cf20f | 4269 | c->top_line = w->top_line; |
f984d4fc GM |
4270 | shrink_window_lowest_first (c, height); |
4271 | } | |
4272 | } | |
4273 | else if (!NILP (w->vchild)) | |
4274 | { | |
4275 | Lisp_Object last_child; | |
4276 | int delta = old_height - height; | |
4277 | int last_top; | |
6bbd7a29 GM |
4278 | |
4279 | last_child = Qnil; | |
177c0ea7 | 4280 | |
f984d4fc GM |
4281 | /* Find the last child. We are taking space from lowest windows |
4282 | first, so we iterate over children from the last child | |
4283 | backwards. */ | |
4284 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
4285 | last_child = child; | |
4286 | ||
4287 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4288 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4289 | { | |
4290 | int this_one; | |
177c0ea7 | 4291 | |
f984d4fc | 4292 | c = XWINDOW (child); |
949cf20f | 4293 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4294 | |
4295 | if (this_one > delta) | |
4296 | this_one = delta; | |
4297 | ||
949cf20f | 4298 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4299 | delta -= this_one; |
4300 | } | |
4301 | ||
4302 | /* Compute new positions. */ | |
949cf20f | 4303 | last_top = XINT (w->top_line); |
f984d4fc GM |
4304 | for (child = w->vchild; !NILP (child); child = c->next) |
4305 | { | |
4306 | c = XWINDOW (child); | |
949cf20f KS |
4307 | c->top_line = make_number (last_top); |
4308 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4309 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4310 | } |
4311 | } | |
4312 | } | |
4313 | ||
4314 | ||
43b4a21f GM |
4315 | /* Save, restore, or check positions and sizes in the window tree |
4316 | rooted at W. ACTION says what to do. | |
f984d4fc | 4317 | |
949cf20f KS |
4318 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4319 | orig_total_lines members are valid for all windows in the window | |
4320 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4321 | |
43b4a21f | 4322 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4323 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4324 | |
949cf20f KS |
4325 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4326 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4327 | |
4328 | static int | |
4329 | save_restore_orig_size (w, action) | |
f984d4fc | 4330 | struct window *w; |
43b4a21f | 4331 | enum save_restore_action action; |
f984d4fc | 4332 | { |
43b4a21f GM |
4333 | int success_p = 1; |
4334 | ||
f984d4fc GM |
4335 | while (w) |
4336 | { | |
4337 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4338 | { |
4339 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4340 | success_p = 0; | |
4341 | } | |
f984d4fc | 4342 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4343 | { |
4344 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4345 | success_p = 0; | |
4346 | } | |
177c0ea7 | 4347 | |
43b4a21f | 4348 | switch (action) |
f984d4fc | 4349 | { |
43b4a21f | 4350 | case CHECK_ORIG_SIZES: |
949cf20f | 4351 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4352 | return 0; |
4353 | break; | |
4354 | ||
4355 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4356 | w->orig_top_line = w->top_line; |
4357 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4358 | XSETFASTINT (w->last_modified, 0); |
4359 | XSETFASTINT (w->last_overlay_modified, 0); | |
4360 | break; | |
4361 | ||
4362 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4363 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4364 | w->top_line = w->orig_top_line; | |
4365 | w->total_lines = w->orig_total_lines; | |
4366 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4367 | XSETFASTINT (w->last_modified, 0); |
4368 | XSETFASTINT (w->last_overlay_modified, 0); | |
4369 | break; | |
4370 | ||
4371 | default: | |
4372 | abort (); | |
f984d4fc | 4373 | } |
43b4a21f | 4374 | |
f984d4fc GM |
4375 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4376 | } | |
43b4a21f GM |
4377 | |
4378 | return success_p; | |
f984d4fc GM |
4379 | } |
4380 | ||
4381 | ||
4382 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4383 | without deleting other windows. */ | |
4384 | ||
4385 | void | |
4386 | grow_mini_window (w, delta) | |
4387 | struct window *w; | |
4388 | int delta; | |
4389 | { | |
4390 | struct frame *f = XFRAME (w->frame); | |
4391 | struct window *root; | |
177c0ea7 | 4392 | |
f984d4fc GM |
4393 | xassert (MINI_WINDOW_P (w)); |
4394 | xassert (delta >= 0); | |
177c0ea7 | 4395 | |
f984d4fc GM |
4396 | /* Check values of window_min_width and window_min_height for |
4397 | validity. */ | |
4398 | check_min_window_sizes (); | |
4399 | ||
4400 | /* Compute how much we can enlarge the mini-window without deleting | |
4401 | other windows. */ | |
4402 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4403 | if (delta) | |
4404 | { | |
4405 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4406 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4407 | /* Note that the root window may already be smaller than |
eafa3196 | 4408 | min_height. */ |
949cf20f | 4409 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4410 | } |
177c0ea7 | 4411 | |
f984d4fc GM |
4412 | if (delta) |
4413 | { | |
4414 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4415 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4416 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4417 | |
4418 | /* Shrink other windows. */ | |
949cf20f | 4419 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4420 | |
4421 | /* Grow the mini-window. */ | |
949cf20f KS |
4422 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4423 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4424 | XSETFASTINT (w->last_modified, 0); |
4425 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4426 | |
f984d4fc GM |
4427 | adjust_glyphs (f); |
4428 | } | |
4429 | } | |
4430 | ||
4431 | ||
86c8e823 GM |
4432 | /* Shrink mini-window W. If there is recorded info about window sizes |
4433 | before a call to grow_mini_window, restore recorded window sizes. | |
4434 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4435 | line. */ | |
f984d4fc GM |
4436 | |
4437 | void | |
4438 | shrink_mini_window (w) | |
4439 | struct window *w; | |
4440 | { | |
4441 | struct frame *f = XFRAME (w->frame); | |
4442 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4443 | ||
43b4a21f | 4444 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4445 | { |
43b4a21f | 4446 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4447 | adjust_glyphs (f); |
4448 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4449 | windows_or_buffers_changed = 1; | |
4450 | } | |
949cf20f | 4451 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4452 | { |
0130fe1a GM |
4453 | /* Distribute the additional lines of the mini-window |
4454 | among the other windows. */ | |
86c8e823 GM |
4455 | Lisp_Object window; |
4456 | XSETWINDOW (window, w); | |
949cf20f | 4457 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0, 0); |
86c8e823 | 4458 | } |
f984d4fc GM |
4459 | } |
4460 | ||
4461 | ||
4462 | \f | |
5500c422 GM |
4463 | /* Mark window cursors off for all windows in the window tree rooted |
4464 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4465 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4466 | the frame are cleared. */ | |
4467 | ||
4468 | void | |
4469 | mark_window_cursors_off (w) | |
4470 | struct window *w; | |
4471 | { | |
4472 | while (w) | |
4473 | { | |
4474 | if (!NILP (w->hchild)) | |
4475 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4476 | else if (!NILP (w->vchild)) | |
4477 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4478 | else | |
4479 | w->phys_cursor_on_p = 0; | |
4480 | ||
4481 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4482 | } | |
4483 | } | |
4484 | ||
4485 | ||
e9c195b1 | 4486 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4487 | |
4488 | int | |
4489 | window_internal_height (w) | |
4490 | struct window *w; | |
4491 | { | |
949cf20f | 4492 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4493 | |
e9c195b1 GM |
4494 | if (!MINI_WINDOW_P (w)) |
4495 | { | |
4496 | if (!NILP (w->parent) | |
4497 | || !NILP (w->vchild) | |
4498 | || !NILP (w->hchild) | |
4499 | || !NILP (w->next) | |
4500 | || !NILP (w->prev) | |
4501 | || WINDOW_WANTS_MODELINE_P (w)) | |
4502 | --ht; | |
7ab12479 | 4503 | |
e9c195b1 GM |
4504 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4505 | --ht; | |
4506 | } | |
7ab12479 JB |
4507 | |
4508 | return ht; | |
4509 | } | |
4510 | ||
535e0b8e JB |
4511 | |
4512 | /* Return the number of columns in W. | |
a3c87d4e | 4513 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4514 | separating W from the sibling to its right. */ |
5500c422 | 4515 | |
535e0b8e | 4516 | int |
949cf20f | 4517 | window_box_text_cols (w) |
535e0b8e JB |
4518 | struct window *w; |
4519 | { | |
5500c422 | 4520 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4521 | int width = XINT (w->total_cols); |
535e0b8e | 4522 | |
949cf20f | 4523 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4524 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4525 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4526 | else if (!FRAME_WINDOW_P (f) | |
4527 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4528 | /* The column of `|' characters separating side-by-side windows |
4529 | occupies one column only. */ | |
4530 | width -= 1; | |
4531 | ||
5500c422 | 4532 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4533 | /* On window-systems, fringes and display margins cannot be |
4534 | used for normal text. */ | |
4535 | width -= (WINDOW_FRINGE_COLS (w) | |
4536 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4537 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4538 | |
4539 | return width; | |
535e0b8e JB |
4540 | } |
4541 | ||
5500c422 GM |
4542 | \f |
4543 | /************************************************************************ | |
4544 | Window Scrolling | |
4545 | ***********************************************************************/ | |
535e0b8e | 4546 | |
5500c422 | 4547 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4548 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4549 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4550 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4551 | means don't signal an error if we try to move over BEGV or ZV, | |
4552 | respectively. */ | |
7ab12479 | 4553 | |
101d1605 RS |
4554 | static void |
4555 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4556 | Lisp_Object window; |
4557 | int n; | |
101d1605 | 4558 | int whole; |
f8026fd8 | 4559 | int noerror; |
5500c422 | 4560 | { |
cba59f77 RS |
4561 | immediate_quit = 1; |
4562 | ||
5500c422 GM |
4563 | /* If we must, use the pixel-based version which is much slower than |
4564 | the line-based one but can handle varying line heights. */ | |
4565 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4566 | window_scroll_pixel_based (window, n, whole, noerror); | |
4567 | else | |
4568 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4569 | |
4570 | immediate_quit = 0; | |
5500c422 GM |
4571 | } |
4572 | ||
4573 | ||
4574 | /* Implementation of window_scroll that works based on pixel line | |
4575 | heights. See the comment of window_scroll for parameter | |
4576 | descriptions. */ | |
4577 | ||
4578 | static void | |
4579 | window_scroll_pixel_based (window, n, whole, noerror) | |
4580 | Lisp_Object window; | |
4581 | int n; | |
4582 | int whole; | |
4583 | int noerror; | |
4584 | { | |
4585 | struct it it; | |
4586 | struct window *w = XWINDOW (window); | |
4587 | struct text_pos start; | |
4588 | Lisp_Object tem; | |
4589 | int this_scroll_margin; | |
4590 | int preserve_y; | |
5cdb3cf3 MB |
4591 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4592 | int vscrolled = 0; | |
5500c422 GM |
4593 | |
4594 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4595 | |
5500c422 | 4596 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4597 | the screen. Allow PT to be partially visible, otherwise |
4598 | something like (scroll-down 1) with PT in the line before | |
4599 | the partially visible one would recenter. */ | |
4600 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
4601 | if (NILP (tem)) |
4602 | { | |
4603 | /* Move backward half the height of the window. Performance note: | |
4604 | vmotion used here is about 10% faster, but would give wrong | |
4605 | results for variable height lines. */ | |
4606 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4607 | it.current_y = it.last_visible_y; | |
f204989e | 4608 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4609 | |
5500c422 GM |
4610 | /* The function move_iterator_vertically may move over more than |
4611 | the specified y-distance. If it->w is small, e.g. a | |
4612 | mini-buffer window, we may end up in front of the window's | |
4613 | display area. This is the case when Start displaying at the | |
4614 | start of the line containing PT in this case. */ | |
4615 | if (it.current_y <= 0) | |
4616 | { | |
4617 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4618 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4619 | it.current_y = 0; |
4620 | } | |
4621 | ||
4622 | start = it.current.pos; | |
4623 | } | |
e56263e5 KS |
4624 | else if (auto_window_vscroll_p) |
4625 | { | |
5b1ba1e3 | 4626 | if (tem = XCAR (XCDR (XCDR (tem))), CONSP (tem)) |
e56263e5 KS |
4627 | { |
4628 | int px; | |
4629 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4630 | if (whole) | |
e856c216 KS |
4631 | dy = max ((window_box_height (w) |
4632 | - next_screen_context_lines * dy), | |
4633 | dy); | |
e56263e5 KS |
4634 | dy *= n; |
4635 | ||
5b1ba1e3 | 4636 | if (n < 0 && (px = XINT (XCAR (tem))) > 0) |
e56263e5 KS |
4637 | { |
4638 | px = max (0, -w->vscroll - min (px, -dy)); | |
4639 | Fset_window_vscroll (window, make_number (px), Qt); | |
4640 | return; | |
4641 | } | |
5b1ba1e3 | 4642 | if (n > 0 && (px = XINT (XCDR (tem))) > 0) |
e56263e5 KS |
4643 | { |
4644 | px = max (0, -w->vscroll + min (px, dy)); | |
4645 | Fset_window_vscroll (window, make_number (px), Qt); | |
4646 | return; | |
4647 | } | |
4648 | } | |
4649 | Fset_window_vscroll (window, make_number (0), Qt); | |
4650 | } | |
5500c422 | 4651 | |
d0c38d63 | 4652 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4653 | point in the same window line as it is now, so get that line. */ |
4654 | if (!NILP (Vscroll_preserve_screen_position)) | |
4655 | { | |
4656 | start_display (&it, w, start); | |
4657 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4658 | preserve_y = it.current_y; | |
4659 | } | |
4660 | else | |
4661 | preserve_y = -1; | |
4662 | ||
4663 | /* Move iterator it from start the specified distance forward or | |
4664 | backward. The result is the new window start. */ | |
4665 | start_display (&it, w, start); | |
4666 | if (whole) | |
4667 | { | |
e856c216 KS |
4668 | int start_pos = IT_CHARPOS (it); |
4669 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4670 | dy = max ((window_box_height (w) | |
4671 | - next_screen_context_lines * dy), | |
4672 | dy) * n; | |
d72340d4 GM |
4673 | |
4674 | /* Note that move_it_vertically always moves the iterator to the | |
4675 | start of a line. So, if the last line doesn't have a newline, | |
4676 | we would end up at the start of the line ending at ZV. */ | |
4677 | if (dy <= 0) | |
e856c216 KS |
4678 | { |
4679 | move_it_vertically_backward (&it, -dy); | |
4680 | /* Ensure we actually does move, e.g. in case we are currently | |
4681 | looking at an image that is taller that the window height. */ | |
4682 | while (start_pos == IT_CHARPOS (it) | |
4683 | && start_pos > BEGV) | |
4684 | move_it_by_lines (&it, -1, 1); | |
4685 | } | |
d72340d4 | 4686 | else if (dy > 0) |
bed83ee4 | 4687 | { |
bed83ee4 KS |
4688 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4689 | MOVE_TO_POS | MOVE_TO_Y); | |
4690 | /* Ensure we actually does move, e.g. in case we are currently | |
4691 | looking at an image that is taller that the window height. */ | |
4692 | while (start_pos == IT_CHARPOS (it) | |
4693 | && start_pos < ZV) | |
4694 | move_it_by_lines (&it, 1, 1); | |
4695 | } | |
5500c422 GM |
4696 | } |
4697 | else | |
4698 | move_it_by_lines (&it, n, 1); | |
4699 | ||
96ae58c8 RS |
4700 | /* We failed if we find ZV is already on the screen (scrolling up, |
4701 | means there's nothing past the end), or if we can't start any | |
4702 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4703 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4704 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4705 | { |
5cdb3cf3 MB |
4706 | if (IT_CHARPOS (it) == ZV) |
4707 | { | |
07ce8b53 RS |
4708 | if (it.current_y < it.last_visible_y |
4709 | && (it.current_y + it.max_ascent + it.max_descent | |
4710 | >= it.last_visible_y)) | |
a74eca50 GM |
4711 | { |
4712 | /* The last line was only partially visible, make it fully | |
4713 | visible. */ | |
4714 | w->vscroll = (it.last_visible_y | |
4715 | - it.current_y + it.max_ascent + it.max_descent); | |
4716 | adjust_glyphs (it.f); | |
4717 | } | |
5cdb3cf3 MB |
4718 | else if (noerror) |
4719 | return; | |
4720 | else | |
4721 | Fsignal (Qend_of_buffer, Qnil); | |
4722 | } | |
5500c422 | 4723 | else |
5cdb3cf3 MB |
4724 | { |
4725 | if (w->vscroll != 0) | |
4726 | /* The first line was only partially visible, make it fully | |
4727 | visible. */ | |
4728 | w->vscroll = 0; | |
4729 | else if (noerror) | |
4730 | return; | |
4731 | else | |
4732 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4733 | } | |
4734 | ||
4735 | /* If control gets here, then we vscrolled. */ | |
4736 | ||
4737 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4738 | ||
4739 | /* Don't try to change the window start below. */ | |
4740 | vscrolled = 1; | |
5500c422 GM |
4741 | } |
4742 | ||
5cdb3cf3 MB |
4743 | if (! vscrolled) |
4744 | { | |
dad67609 RS |
4745 | int pos = IT_CHARPOS (it); |
4746 | int bytepos; | |
e68def1e AS |
4747 | |
4748 | /* If in the middle of a multi-glyph character move forward to | |
4749 | the next character. */ | |
4750 | if (in_display_vector_p (&it)) | |
4751 | { | |
4752 | ++pos; | |
4753 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4754 | } | |
4755 | ||
5cdb3cf3 | 4756 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4757 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4758 | w->buffer); |
dad67609 RS |
4759 | bytepos = XMARKER (w->start)->bytepos; |
4760 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4761 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4762 | w->update_mode_line = Qt; |
4763 | XSETFASTINT (w->last_modified, 0); | |
4764 | XSETFASTINT (w->last_overlay_modified, 0); | |
4765 | /* Set force_start so that redisplay_window will run the | |
4766 | window-scroll-functions. */ | |
4767 | w->force_start = Qt; | |
4768 | } | |
177c0ea7 | 4769 | |
dc297565 RS |
4770 | /* The rest of this function uses current_y in a nonstandard way, |
4771 | not including the height of the header line if any. */ | |
5500c422 | 4772 | it.current_y = it.vpos = 0; |
177c0ea7 | 4773 | |
940f53e5 RS |
4774 | /* Move PT out of scroll margins. |
4775 | This code wants current_y to be zero at the window start position | |
4776 | even if there is a header line. */ | |
4777 | this_scroll_margin = max (0, scroll_margin); | |
4778 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4779 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4780 | ||
4781 | if (n > 0) | |
5500c422 | 4782 | { |
940f53e5 RS |
4783 | /* We moved the window start towards ZV, so PT may be now |
4784 | in the scroll margin at the top. */ | |
4785 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4786 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4787 | && (NILP (Vscroll_preserve_screen_position) | |
4788 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4789 | /* We found PT at a legitimate height. Leave it alone. */ |
4790 | ; | |
4791 | else if (preserve_y >= 0) | |
4792 | { | |
fa3c3426 RS |
4793 | /* If we have a header line, take account of it. |
4794 | This is necessary because we set it.current_y to 0, above. */ | |
940f53e5 RS |
4795 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4796 | preserve_y -= CURRENT_HEADER_LINE_HEIGHT (w); | |
dc297565 | 4797 | |
940f53e5 RS |
4798 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); |
4799 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4800 | } | |
4801 | else | |
5500c422 | 4802 | { |
5500c422 | 4803 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4804 | { |
4805 | int prev = it.current_y; | |
4806 | move_it_by_lines (&it, 1, 1); | |
4807 | if (prev == it.current_y) | |
4808 | break; | |
4809 | } | |
5500c422 GM |
4810 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4811 | } | |
940f53e5 RS |
4812 | } |
4813 | else if (n < 0) | |
4814 | { | |
4815 | int charpos, bytepos; | |
aed328bf | 4816 | int partial_p; |
940f53e5 RS |
4817 | |
4818 | /* Save our position, for the preserve_y case. */ | |
4819 | charpos = IT_CHARPOS (it); | |
4820 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4821 | |
940f53e5 RS |
4822 | /* We moved the window start towards BEGV, so PT may be now |
4823 | in the scroll margin at the bottom. */ | |
4824 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4825 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4826 | - this_scroll_margin - 1), | |
4827 | -1, | |
940f53e5 RS |
4828 | MOVE_TO_POS | MOVE_TO_Y); |
4829 | ||
aed328bf KS |
4830 | /* Save our position, in case it's correct. */ |
4831 | charpos = IT_CHARPOS (it); | |
4832 | bytepos = IT_BYTEPOS (it); | |
4833 | ||
4834 | /* See if point is on a partially visible line at the end. */ | |
4835 | if (it.what == IT_EOB) | |
4836 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4837 | else | |
4838 | { | |
4839 | move_it_by_lines (&it, 1, 1); | |
4840 | partial_p = it.current_y > it.last_visible_y; | |
4841 | } | |
4842 | ||
bdf4ec93 RS |
4843 | if (charpos == PT && !partial_p |
4844 | && (NILP (Vscroll_preserve_screen_position) | |
4845 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4846 | /* We found PT before we found the display margin, so PT is ok. */ |
4847 | ; | |
4848 | else if (preserve_y >= 0) | |
4849 | { | |
4850 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4851 | start_display (&it, w, start); | |
fa3c3426 RS |
4852 | #if 0 /* It's wrong to subtract this here |
4853 | because we called start_display again | |
4854 | and did not alter it.current_y this time. */ | |
4855 | ||
940f53e5 RS |
4856 | /* If we have a header line, take account of it. */ |
4857 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
4858 | preserve_y -= CURRENT_HEADER_LINE_HEIGHT (w); | |
fa3c3426 | 4859 | #endif |
5cdb3cf3 | 4860 | |
940f53e5 RS |
4861 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); |
4862 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4863 | } | |
4864 | else | |
4865 | { | |
aed328bf | 4866 | if (partial_p) |
5cdb3cf3 MB |
4867 | /* The last line was only partially visible, so back up two |
4868 | lines to make sure we're on a fully visible line. */ | |
4869 | { | |
4870 | move_it_by_lines (&it, -2, 0); | |
4871 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4872 | } | |
4873 | else | |
4874 | /* No, the position we saved is OK, so use it. */ | |
4875 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4876 | } |
4877 | } | |
4878 | } | |
4879 | ||
4880 | ||
4881 | /* Implementation of window_scroll that works based on screen lines. | |
4882 | See the comment of window_scroll for parameter descriptions. */ | |
4883 | ||
4884 | static void | |
4885 | window_scroll_line_based (window, n, whole, noerror) | |
4886 | Lisp_Object window; | |
4887 | int n; | |
4888 | int whole; | |
4889 | int noerror; | |
7ab12479 JB |
4890 | { |
4891 | register struct window *w = XWINDOW (window); | |
5500c422 | 4892 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4893 | register int pos, pos_byte; |
7ab12479 JB |
4894 | register int ht = window_internal_height (w); |
4895 | register Lisp_Object tem; | |
4896 | int lose; | |
5500c422 | 4897 | Lisp_Object bolp; |
345d45b2 | 4898 | int startpos; |
101d1605 RS |
4899 | struct position posit; |
4900 | int original_vpos; | |
4901 | ||
d4e7cf01 GM |
4902 | /* If scrolling screen-fulls, compute the number of lines to |
4903 | scroll from the window's height. */ | |
4904 | if (whole) | |
4905 | n *= max (1, ht - next_screen_context_lines); | |
4906 | ||
101d1605 RS |
4907 | startpos = marker_position (w->start); |
4908 | ||
4909 | posit = *compute_motion (startpos, 0, 0, 0, | |
4910 | PT, ht, 0, | |
ec2b66c4 | 4911 | -1, XINT (w->hscroll), |
101d1605 RS |
4912 | 0, w); |
4913 | original_vpos = posit.vpos; | |
0a1f771a | 4914 | |
d834a2e9 | 4915 | XSETFASTINT (tem, PT); |
6ffdb539 | 4916 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4917 | |
265a9e55 | 4918 | if (NILP (tem)) |
7ab12479 | 4919 | { |
cd2be1dd | 4920 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4921 | startpos = PT; |
7ab12479 JB |
4922 | } |
4923 | ||
345d45b2 | 4924 | SET_PT (startpos); |
5ce7b543 | 4925 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4926 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4927 | pos = PT; |
b73ea88e | 4928 | pos_byte = PT_BYTE; |
7ab12479 | 4929 | bolp = Fbolp (); |
b73ea88e | 4930 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4931 | |
4932 | if (lose) | |
f8026fd8 JB |
4933 | { |
4934 | if (noerror) | |
4935 | return; | |
4936 | else | |
4937 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4938 | } | |
7ab12479 JB |
4939 | |
4940 | if (pos < ZV) | |
7ab12479 | 4941 | { |
0c7da84e RS |
4942 | int this_scroll_margin = scroll_margin; |
4943 | ||
4944 | /* Don't use a scroll margin that is negative or too large. */ | |
4945 | if (this_scroll_margin < 0) | |
4946 | this_scroll_margin = 0; | |
4947 | ||
949cf20f KS |
4948 | if (XINT (w->total_lines) < 4 * scroll_margin) |
4949 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 4950 | |
b73ea88e | 4951 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4952 | w->start_at_line_beg = bolp; |
4953 | w->update_mode_line = Qt; | |
d834a2e9 | 4954 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4955 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4956 | /* Set force_start so that redisplay_window will run |
4957 | the window-scroll-functions. */ | |
4958 | w->force_start = Qt; | |
0c7da84e | 4959 | |
bdf4ec93 RS |
4960 | if (!NILP (Vscroll_preserve_screen_position) |
4961 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4962 | { |
b73ea88e | 4963 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4964 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4965 | } |
101d1605 RS |
4966 | /* If we scrolled forward, put point enough lines down |
4967 | that it is outside the scroll margin. */ | |
4968 | else if (n > 0) | |
0c7da84e | 4969 | { |
101d1605 RS |
4970 | int top_margin; |
4971 | ||
4972 | if (this_scroll_margin > 0) | |
4973 | { | |
b73ea88e | 4974 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4975 | Fvertical_motion (make_number (this_scroll_margin), window); |
4976 | top_margin = PT; | |
4977 | } | |
4978 | else | |
4979 | top_margin = pos; | |
4980 | ||
4981 | if (top_margin <= opoint) | |
b73ea88e | 4982 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4983 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4984 | { |
b73ea88e | 4985 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4986 | Fvertical_motion (make_number (original_vpos), window); |
4987 | } | |
9317a85d | 4988 | else |
335406fc | 4989 | SET_PT (top_margin); |
0c7da84e | 4990 | } |
101d1605 | 4991 | else if (n < 0) |
7ab12479 | 4992 | { |
101d1605 RS |
4993 | int bottom_margin; |
4994 | ||
0c7da84e RS |
4995 | /* If we scrolled backward, put point near the end of the window |
4996 | but not within the scroll margin. */ | |
b73ea88e | 4997 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4998 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4999 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5000 | bottom_margin = PT; | |
5001 | else | |
5002 | bottom_margin = PT + 1; | |
5003 | ||
5004 | if (bottom_margin > opoint) | |
b73ea88e | 5005 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5006 | else |
101d1605 | 5007 | { |
5500c422 | 5008 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5009 | { |
b73ea88e | 5010 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5011 | Fvertical_motion (make_number (original_vpos), window); |
5012 | } | |
5013 | else | |
5014 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5015 | } |
7ab12479 JB |
5016 | } |
5017 | } | |
5018 | else | |
f8026fd8 JB |
5019 | { |
5020 | if (noerror) | |
5021 | return; | |
5022 | else | |
5023 | Fsignal (Qend_of_buffer, Qnil); | |
5024 | } | |
7ab12479 | 5025 | } |
5500c422 GM |
5026 | |
5027 | ||
5028 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5029 | screen-full which is defined as the height of the window minus | |
5030 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5031 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5032 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5033 | |
5034 | static void | |
5035 | scroll_command (n, direction) | |
5500c422 | 5036 | Lisp_Object n; |
7ab12479 JB |
5037 | int direction; |
5038 | { | |
331379bf | 5039 | int count = SPECPDL_INDEX (); |
7ab12479 | 5040 | |
5500c422 GM |
5041 | xassert (abs (direction) == 1); |
5042 | ||
5043 | /* If selected window's buffer isn't current, make it current for | |
5044 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5045 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5046 | { |
5047 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5048 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5049 | |
5050 | /* Make redisplay consider other windows than just selected_window. */ | |
5051 | ++windows_or_buffers_changed; | |
95605e15 | 5052 | } |
7ab12479 | 5053 | |
265a9e55 | 5054 | if (NILP (n)) |
d4e7cf01 | 5055 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5056 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5057 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5058 | else |
5059 | { | |
5060 | n = Fprefix_numeric_value (n); | |
101d1605 | 5061 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5062 | } |
95605e15 JB |
5063 | |
5064 | unbind_to (count, Qnil); | |
7ab12479 JB |
5065 | } |
5066 | ||
5067 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5068 | doc: /* Scroll text of current window upward ARG lines. |
5069 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5070 | A near full screen is `next-screen-context-lines' less than a full screen. |
5071 | Negative ARG means scroll downward. | |
5072 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5073 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5074 | (arg) | |
413430c5 | 5075 | Lisp_Object arg; |
7ab12479 | 5076 | { |
413430c5 | 5077 | scroll_command (arg, 1); |
7ab12479 JB |
5078 | return Qnil; |
5079 | } | |
5080 | ||
5081 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5082 | doc: /* Scroll text of current window down ARG lines. |
5083 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5084 | A near full screen is `next-screen-context-lines' less than a full screen. |
5085 | Negative ARG means scroll upward. | |
5086 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5087 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5088 | (arg) | |
413430c5 | 5089 | Lisp_Object arg; |
7ab12479 | 5090 | { |
413430c5 | 5091 | scroll_command (arg, -1); |
7ab12479 JB |
5092 | return Qnil; |
5093 | } | |
ccd0664b RS |
5094 | \f |
5095 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5096 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5097 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5098 | showing that buffer is used. |
5099 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5100 | specifies the window. This takes precedence over | |
5101 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5102 | () |
7ab12479 | 5103 | { |
ccd0664b | 5104 | Lisp_Object window; |
7ab12479 JB |
5105 | |
5106 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5107 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5108 | window = Vminibuf_scroll_window; |
5109 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5110 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5111 | { |
5112 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5113 | if (NILP (window)) |
53f76081 | 5114 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5115 | } |
5116 | else | |
dbc4e1c1 JB |
5117 | { |
5118 | /* Nothing specified; look for a neighboring window on the same | |
5119 | frame. */ | |
5120 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5121 | ||
5122 | if (EQ (window, selected_window)) | |
5123 | /* That didn't get us anywhere; look for a window on another | |
5124 | visible frame. */ | |
5125 | do | |
5126 | window = Fnext_window (window, Qnil, Qt); | |
5127 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5128 | && ! EQ (window, selected_window)); | |
5129 | } | |
5130 | ||
b7826503 | 5131 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5132 | |
5133 | if (EQ (window, selected_window)) | |
5134 | error ("There is no other window"); | |
5135 | ||
ccd0664b RS |
5136 | return window; |
5137 | } | |
5138 | ||
5139 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5140 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5141 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5142 | The next window is the one below the current one; or the one at the top | |
5143 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5144 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5145 | When calling from a program, supply as argument a number, nil, or `-'. | |
5146 | ||
fdb82f93 | 5147 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5148 | showing that buffer, popping the buffer up if necessary. |
5149 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5150 | specifies the window to scroll. This takes precedence over | |
5151 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5152 | (arg) |
d4e7cf01 | 5153 | Lisp_Object arg; |
ccd0664b | 5154 | { |
d4e7cf01 GM |
5155 | Lisp_Object window; |
5156 | struct window *w; | |
331379bf | 5157 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5158 | |
5159 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5160 | w = XWINDOW (window); |
7ab12479 JB |
5161 | |
5162 | /* Don't screw up if window_scroll gets an error. */ | |
5163 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5164 | ++windows_or_buffers_changed; |
7ab12479 JB |
5165 | |
5166 | Fset_buffer (w->buffer); | |
5167 | SET_PT (marker_position (w->pointm)); | |
5168 | ||
413430c5 | 5169 | if (NILP (arg)) |
d4e7cf01 | 5170 | window_scroll (window, 1, 1, 1); |
413430c5 | 5171 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5172 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5173 | else |
5174 | { | |
413430c5 EN |
5175 | if (CONSP (arg)) |
5176 | arg = Fcar (arg); | |
b7826503 | 5177 | CHECK_NUMBER (arg); |
101d1605 | 5178 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5179 | } |
5180 | ||
b73ea88e | 5181 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5182 | unbind_to (count, Qnil); |
7ab12479 JB |
5183 | |
5184 | return Qnil; | |
5185 | } | |
5186 | \f | |
dc297565 | 5187 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5188 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5189 | Default for ARG is window width minus 2. |
5190 | Value is the total amount of leftward horizontal scrolling in | |
5191 | effect after the change. | |
dc297565 RS |
5192 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5193 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5194 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5195 | by this function. This happens in an interactive call. */) |
5196 | (arg, set_minimum) | |
5197 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5198 | { |
c67fa410 GM |
5199 | Lisp_Object result; |
5200 | int hscroll; | |
5201 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5202 | |
265a9e55 | 5203 | if (NILP (arg)) |
949cf20f | 5204 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5205 | else |
5206 | arg = Fprefix_numeric_value (arg); | |
5207 | ||
c67fa410 GM |
5208 | hscroll = XINT (w->hscroll) + XINT (arg); |
5209 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5210 | ||
dc297565 | 5211 | if (!NILP (set_minimum)) |
c67fa410 GM |
5212 | w->min_hscroll = w->hscroll; |
5213 | ||
5214 | return result; | |
7ab12479 JB |
5215 | } |
5216 | ||
dc297565 | 5217 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5218 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5219 | Default for ARG is window width minus 2. |
5220 | Value is the total amount of leftward horizontal scrolling in | |
5221 | effect after the change. | |
dc297565 RS |
5222 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5223 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5224 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5225 | by this function. This happens in an interactive call. */) |
5226 | (arg, set_minimum) | |
a93563fd | 5227 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5228 | { |
c67fa410 GM |
5229 | Lisp_Object result; |
5230 | int hscroll; | |
5231 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5232 | |
265a9e55 | 5233 | if (NILP (arg)) |
949cf20f | 5234 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5235 | else |
5236 | arg = Fprefix_numeric_value (arg); | |
5237 | ||
c67fa410 GM |
5238 | hscroll = XINT (w->hscroll) - XINT (arg); |
5239 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5240 | |
dc297565 | 5241 | if (!NILP (set_minimum)) |
c67fa410 GM |
5242 | w->min_hscroll = w->hscroll; |
5243 | ||
5244 | return result; | |
7ab12479 JB |
5245 | } |
5246 | ||
fa832261 KS |
5247 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5248 | doc: /* Return the window which was selected when entering the minibuffer. | |
5249 | Returns nil, if current window is not a minibuffer window. */) | |
5250 | () | |
5251 | { | |
5252 | if (minibuf_level > 0 | |
5253 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5254 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5255 | return minibuf_selected_window; | |
5256 | ||
5257 | return Qnil; | |
5258 | } | |
5259 | ||
12c8b416 GM |
5260 | /* Value is the number of lines actually displayed in window W, |
5261 | as opposed to its height. */ | |
5262 | ||
5263 | static int | |
5264 | displayed_window_lines (w) | |
5265 | struct window *w; | |
5266 | { | |
5267 | struct it it; | |
5268 | struct text_pos start; | |
5269 | int height = window_box_height (w); | |
5270 | struct buffer *old_buffer; | |
5271 | int bottom_y; | |
5272 | ||
5273 | if (XBUFFER (w->buffer) != current_buffer) | |
5274 | { | |
5275 | old_buffer = current_buffer; | |
5276 | set_buffer_internal (XBUFFER (w->buffer)); | |
5277 | } | |
5278 | else | |
5279 | old_buffer = NULL; | |
5280 | ||
521b203e GM |
5281 | /* In case W->start is out of the accessible range, do something |
5282 | reasonable. This happens in Info mode when Info-scroll-down | |
5283 | calls (recenter -1) while W->start is 1. */ | |
5284 | if (XMARKER (w->start)->charpos < BEGV) | |
5285 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5286 | else if (XMARKER (w->start)->charpos > ZV) | |
5287 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5288 | else | |
5289 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5290 | ||
12c8b416 GM |
5291 | start_display (&it, w, start); |
5292 | move_it_vertically (&it, height); | |
c8bc6f65 | 5293 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5294 | |
1de65f51 RS |
5295 | /* rms: On a non-window display, |
5296 | the value of it.vpos at the bottom of the screen | |
5297 | seems to be 1 larger than window_box_height (w). | |
5298 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5299 | when ZV is on the last screen line | |
5300 | moves to the previous screen line instead of the last one. */ | |
5301 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5302 | height++; | |
5303 | ||
12c8b416 GM |
5304 | /* Add in empty lines at the bottom of the window. */ |
5305 | if (bottom_y < height) | |
5306 | { | |
949cf20f | 5307 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5308 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5309 | } |
5310 | ||
c8bc6f65 GM |
5311 | if (old_buffer) |
5312 | set_buffer_internal (old_buffer); | |
5313 | ||
12c8b416 GM |
5314 | return it.vpos; |
5315 | } | |
5316 | ||
5317 | ||
7ab12479 | 5318 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5319 | doc: /* Center point in window and redisplay frame. |
5320 | With prefix argument ARG, recenter putting point on screen line ARG | |
5321 | relative to the current window. If ARG is negative, it counts up from the | |
5322 | bottom of the window. (ARG should be less than the height of the window.) | |
5323 | ||
5324 | If ARG is omitted or nil, erase the entire frame and then | |
5325 | redraw with point in the center of the current window. | |
5326 | Just C-u as prefix means put point in the center of the window | |
5327 | and redisplay normally--don't erase and redraw the frame. */) | |
5328 | (arg) | |
413430c5 | 5329 | register Lisp_Object arg; |
7ab12479 | 5330 | { |
6df47b59 | 5331 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5332 | struct buffer *buf = XBUFFER (w->buffer); |
5333 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5334 | int center_p = 0; |
5335 | int charpos, bytepos; | |
f6b43440 RS |
5336 | int iarg; |
5337 | int this_scroll_margin; | |
7ab12479 | 5338 | |
0fa5d25b RS |
5339 | /* If redisplay is suppressed due to an error, try again. */ |
5340 | obuf->display_error_modiff = 0; | |
5341 | ||
413430c5 | 5342 | if (NILP (arg)) |
7ab12479 | 5343 | { |
f02d6d5c KH |
5344 | int i; |
5345 | ||
5346 | /* Invalidate pixel data calculated for all compositions. */ | |
5347 | for (i = 0; i < n_compositions; i++) | |
5348 | composition_table[i]->font = NULL; | |
7ab12479 | 5349 | |
527b6458 | 5350 | Fredraw_frame (w->frame); |
44fa5b1e | 5351 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 5352 | center_p = 1; |
7ab12479 | 5353 | } |
413430c5 | 5354 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5355 | center_p = 1; |
7ab12479 JB |
5356 | else |
5357 | { | |
413430c5 | 5358 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5359 | CHECK_NUMBER (arg); |
ae12ecd7 | 5360 | iarg = XINT (arg); |
7ab12479 JB |
5361 | } |
5362 | ||
478292ed | 5363 | set_buffer_internal (buf); |
7ab12479 | 5364 | |
f6b43440 RS |
5365 | /* Do this after making BUF current |
5366 | in case scroll_margin is buffer-local. */ | |
5367 | this_scroll_margin = max (0, scroll_margin); | |
5368 | this_scroll_margin = min (this_scroll_margin, | |
5369 | XFASTINT (w->total_lines) / 4); | |
5370 | ||
521b203e | 5371 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5372 | have variable-height lines and centering point on the basis of |
5373 | line counts would lead to strange effects. */ | |
521b203e | 5374 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5375 | { |
6df47b59 GM |
5376 | if (center_p) |
5377 | { | |
521b203e GM |
5378 | struct it it; |
5379 | struct text_pos pt; | |
177c0ea7 | 5380 | |
521b203e GM |
5381 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5382 | start_display (&it, w, pt); | |
f204989e | 5383 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5384 | charpos = IT_CHARPOS (it); |
5385 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5386 | } |
f6b43440 | 5387 | else if (iarg < 0) |
6df47b59 | 5388 | { |
521b203e GM |
5389 | struct it it; |
5390 | struct text_pos pt; | |
f6b43440 | 5391 | int nlines = -iarg; |
f204989e KS |
5392 | int extra_line_spacing; |
5393 | int h = window_box_height (w); | |
177c0ea7 | 5394 | |
f6b43440 RS |
5395 | iarg = - max (-iarg, this_scroll_margin); |
5396 | ||
521b203e GM |
5397 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5398 | start_display (&it, w, pt); | |
f204989e KS |
5399 | |
5400 | /* Be sure we have the exact height of the full line containing PT. */ | |
5401 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5402 | |
d466fa4d | 5403 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5404 | height minus what's displayed in the line containing PT, |
5405 | and the lines below. */ | |
f204989e KS |
5406 | it.current_y = 0; |
5407 | it.vpos = 0; | |
d466fa4d GM |
5408 | move_it_by_lines (&it, nlines, 1); |
5409 | ||
f204989e KS |
5410 | if (it.vpos == nlines) |
5411 | h -= it.current_y; | |
5412 | else | |
5413 | { | |
5414 | /* Last line has no newline */ | |
5415 | h -= line_bottom_y (&it); | |
5416 | it.vpos++; | |
5417 | } | |
5418 | ||
5419 | /* Don't reserve space for extra line spacing of last line. */ | |
5420 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5421 | |
5422 | /* If we can't move down NLINES lines because we hit | |
5423 | the end of the buffer, count in some empty lines. */ | |
5424 | if (it.vpos < nlines) | |
f204989e KS |
5425 | { |
5426 | nlines -= it.vpos; | |
5427 | extra_line_spacing = it.extra_line_spacing; | |
5428 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5429 | } | |
5430 | if (h <= 0) | |
5431 | return Qnil; | |
201c831a | 5432 | |
f204989e | 5433 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5434 | start_display (&it, w, pt); |
f204989e KS |
5435 | it.current_y = 0; |
5436 | move_it_vertically_backward (&it, h); | |
5437 | ||
5438 | /* If extra line spacing is present, we may move too far | |
5439 | back. This causes the last line to be only partially | |
5440 | visible (which triggers redisplay to recenter that line | |
5441 | in the middle), so move forward. | |
5442 | But ignore extra line spacing on last line, as it is not | |
5443 | considered to be part of the visible height of the line. | |
5444 | */ | |
5445 | h += extra_line_spacing; | |
5446 | while (-it.current_y > h) | |
5447 | move_it_by_lines (&it, 1, 1); | |
5448 | ||
521b203e GM |
5449 | charpos = IT_CHARPOS (it); |
5450 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5451 | } |
521b203e GM |
5452 | else |
5453 | { | |
5454 | struct position pos; | |
f6b43440 RS |
5455 | |
5456 | iarg = XINT (arg); | |
5457 | iarg = max (iarg, this_scroll_margin); | |
5458 | ||
5459 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5460 | charpos = pos.bufpos; |
5461 | bytepos = pos.bytepos; | |
5462 | } | |
5463 | } | |
5464 | else | |
5465 | { | |
5466 | struct position pos; | |
5467 | int ht = window_internal_height (w); | |
5468 | ||
5469 | if (center_p) | |
f6b43440 | 5470 | iarg = make_number (ht / 2); |
521b203e | 5471 | else if (XINT (arg) < 0) |
f6b43440 RS |
5472 | iarg = XINT (arg) + ht; |
5473 | else | |
5474 | iarg = XINT (arg); | |
5475 | ||
5476 | /* Don't let it get into the margin at either top or bottom. */ | |
5477 | iarg = max (iarg, this_scroll_margin); | |
5478 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5479 | |
f6b43440 | 5480 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5481 | charpos = pos.bufpos; |
5482 | bytepos = pos.bytepos; | |
5483 | } | |
5484 | ||
5485 | /* Set the new window start. */ | |
5486 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5487 | w->window_end_valid = Qnil; |
177c0ea7 | 5488 | |
95605b1b RS |
5489 | w->optional_new_start = Qt; |
5490 | ||
6df47b59 GM |
5491 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5492 | w->start_at_line_beg = Qt; | |
5493 | else | |
5494 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5495 | |
478292ed | 5496 | set_buffer_internal (obuf); |
7ab12479 JB |
5497 | return Qnil; |
5498 | } | |
b7617575 GM |
5499 | |
5500 | ||
81fe0836 | 5501 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5502 | 0, 1, 0, |
5503 | doc: /* Return the height in lines of the text display area of WINDOW. | |
5504 | This doesn't include the mode-line (or header-line if any) or any | |
5505 | partial-height lines in the text display area. */) | |
5506 | (window) | |
81fe0836 MB |
5507 | Lisp_Object window; |
5508 | { | |
5509 | struct window *w = decode_window (window); | |
5510 | int pixel_height = window_box_height (w); | |
949cf20f | 5511 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5512 | return make_number (line_height); |
5513 | } | |
5514 | ||
5515 | ||
7ab12479 JB |
5516 | \f |
5517 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5518 | 1, 1, "P", |
5519 | doc: /* Position point relative to window. | |
5520 | With no argument, position point at center of window. | |
5521 | An argument specifies vertical position within the window; | |
5522 | zero means top of window, negative means relative to bottom of window. */) | |
5523 | (arg) | |
b7617575 | 5524 | Lisp_Object arg; |
7ab12479 | 5525 | { |
b7617575 GM |
5526 | struct window *w = XWINDOW (selected_window); |
5527 | int lines, start; | |
540b6aa0 | 5528 | Lisp_Object window; |
f6b43440 RS |
5529 | #if 0 |
5530 | int this_scroll_margin; | |
5531 | #endif | |
7ab12479 | 5532 | |
b7617575 | 5533 | window = selected_window; |
7ab12479 JB |
5534 | start = marker_position (w->start); |
5535 | if (start < BEGV || start > ZV) | |
5536 | { | |
b7617575 | 5537 | int height = window_internal_height (w); |
cd2be1dd | 5538 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5539 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5540 | w->start_at_line_beg = Fbolp (); |
5541 | w->force_start = Qt; | |
5542 | } | |
5543 | else | |
b73ea88e | 5544 | Fgoto_char (w->start); |
7ab12479 | 5545 | |
b7617575 | 5546 | lines = displayed_window_lines (w); |
f6b43440 RS |
5547 | |
5548 | #if 0 | |
5549 | this_scroll_margin = max (0, scroll_margin); | |
5550 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5551 | #endif | |
5552 | ||
b7617575 GM |
5553 | if (NILP (arg)) |
5554 | XSETFASTINT (arg, lines / 2); | |
5555 | else | |
5556 | { | |
f6b43440 RS |
5557 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5558 | ||
5559 | if (iarg < 0) | |
5560 | iarg = iarg + lines; | |
5561 | ||
5562 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5563 | to a place inside the scroll margins (which would cause the | |
5564 | next redisplay to scroll). I wrote this code, but then concluded | |
5565 | it is probably better not to install it. However, it is here | |
5566 | inside #if 0 so as not to lose it. -- rms. */ | |
5567 | ||
5568 | /* Don't let it get into the margin at either top or bottom. */ | |
5569 | iarg = max (iarg, this_scroll_margin); | |
5570 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5571 | #endif | |
5572 | ||
5573 | arg = make_number (iarg); | |
b7617575 GM |
5574 | } |
5575 | ||
c8bc6f65 | 5576 | /* Skip past a partially visible first line. */ |
163784df | 5577 | if (w->vscroll) |
163784df MB |
5578 | XSETINT (arg, XINT (arg) + 1); |
5579 | ||
540b6aa0 | 5580 | return Fvertical_motion (arg, window); |
7ab12479 | 5581 | } |
5500c422 GM |
5582 | |
5583 | ||
7ab12479 | 5584 | \f |
5500c422 GM |
5585 | /*********************************************************************** |
5586 | Window Configuration | |
5587 | ***********************************************************************/ | |
5588 | ||
7ab12479 JB |
5589 | struct save_window_data |
5590 | { | |
f5ccc0cc | 5591 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 5592 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 5593 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 5594 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 5595 | Lisp_Object selected_frame; |
7ab12479 JB |
5596 | Lisp_Object current_window; |
5597 | Lisp_Object current_buffer; | |
5598 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5599 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5600 | Lisp_Object root_window; |
bdc727bf | 5601 | Lisp_Object focus_frame; |
756b6edc RS |
5602 | /* Record the values of window-min-width and window-min-height |
5603 | so that window sizes remain consistent with them. */ | |
5604 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
5605 | /* A vector, each of whose elements is a struct saved_window |
5606 | for one window. */ | |
7ab12479 JB |
5607 | Lisp_Object saved_windows; |
5608 | }; | |
ff06df24 | 5609 | |
cbff28e8 | 5610 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5611 | struct saved_window |
ea68264b GM |
5612 | { |
5613 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
5614 | EMACS_INT size_from_Lisp_Vector_struct; | |
5615 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 5616 | |
ea68264b GM |
5617 | Lisp_Object window; |
5618 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5619 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5620 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5621 | Lisp_Object parent, prev; |
5622 | Lisp_Object start_at_line_beg; | |
5623 | Lisp_Object display_table; | |
949cf20f KS |
5624 | Lisp_Object orig_top_line, orig_total_lines; |
5625 | Lisp_Object left_margin_cols, right_margin_cols; | |
5626 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5627 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
ea68264b GM |
5628 | }; |
5629 | ||
949cf20f | 5630 | #define SAVED_WINDOW_VECTOR_SIZE 24 /* Arg to Fmake_vector */ |
7ab12479 JB |
5631 | |
5632 | #define SAVED_WINDOW_N(swv,n) \ | |
5633 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5634 | ||
5635 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5636 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5637 | (object) | |
413430c5 | 5638 | Lisp_Object object; |
7ab12479 | 5639 | { |
413430c5 | 5640 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
5641 | return Qt; |
5642 | return Qnil; | |
5643 | } | |
5644 | ||
3f8ab7bd | 5645 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5646 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5647 | (config) | |
3f8ab7bd RS |
5648 | Lisp_Object config; |
5649 | { | |
5650 | register struct save_window_data *data; | |
5651 | struct Lisp_Vector *saved_windows; | |
5652 | ||
5653 | if (! WINDOW_CONFIGURATIONP (config)) | |
5654 | wrong_type_argument (Qwindow_configuration_p, config); | |
5655 | ||
5656 | data = (struct save_window_data *) XVECTOR (config); | |
5657 | saved_windows = XVECTOR (data->saved_windows); | |
5658 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5659 | } | |
5660 | ||
d5b2799e | 5661 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5662 | Sset_window_configuration, 1, 1, 0, |
5663 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5664 | CONFIGURATION must be a value previously returned | |
5665 | by `current-window-configuration' (which see). | |
5666 | If CONFIGURATION was made from a frame that is now deleted, | |
5667 | only frame-independent values can be restored. In this case, | |
5668 | the return value is nil. Otherwise the value is t. */) | |
5669 | (configuration) | |
2f83aebe | 5670 | Lisp_Object configuration; |
7ab12479 | 5671 | { |
7ab12479 JB |
5672 | register struct save_window_data *data; |
5673 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5674 | Lisp_Object new_current_buffer; |
fd482be5 | 5675 | Lisp_Object frame; |
44fa5b1e | 5676 | FRAME_PTR f; |
72695e47 | 5677 | int old_point = -1; |
7ab12479 | 5678 | |
017b2bad | 5679 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 5680 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 5681 | |
2f83aebe | 5682 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5683 | saved_windows = XVECTOR (data->saved_windows); |
5684 | ||
7ab12479 | 5685 | new_current_buffer = data->current_buffer; |
265a9e55 | 5686 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5687 | new_current_buffer = Qnil; |
72695e47 | 5688 | else |
73cadfc1 DK |
5689 | { |
5690 | if (XBUFFER (new_current_buffer) == current_buffer) | |
5691 | old_point = PT; | |
5692 | else | |
203eb0aa SM |
5693 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5694 | point in new_current_buffer as of the last time this buffer was | |
5695 | used. This can be non-deterministic since it can be changed by | |
5696 | things like jit-lock by mere temporary selection of some random | |
5697 | window that happens to show this buffer. | |
5698 | So if possible we want this arbitrary choice of "which point" to | |
5699 | be the one from the to-be-selected-window so as to prevent this | |
5700 | window's cursor from being copied from another window. */ | |
5701 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5702 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5703 | && !EQ (selected_window, data->current_window)) | |
5704 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5705 | else | |
5706 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5707 | } |
7ab12479 | 5708 | |
fd482be5 JB |
5709 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5710 | f = XFRAME (frame); | |
177c0ea7 | 5711 | |
fd482be5 JB |
5712 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5713 | However, there is other stuff we should still try to do below. */ | |
5714 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5715 | { |
fd482be5 JB |
5716 | register struct window *w; |
5717 | register struct saved_window *p; | |
5500c422 GM |
5718 | struct window *root_window; |
5719 | struct window **leaf_windows; | |
5720 | int n_leaf_windows; | |
c4280705 | 5721 | int k, i, n; |
fd482be5 JB |
5722 | |
5723 | /* If the frame has been resized since this window configuration was | |
5724 | made, we change the frame to the size specified in the | |
5725 | configuration, restore the configuration, and then resize it | |
5726 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5727 | int previous_frame_lines = FRAME_LINES (f); |
5728 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5729 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5730 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5731 | |
d2b35234 RS |
5732 | /* The mouse highlighting code could get screwed up |
5733 | if it runs during this. */ | |
5734 | BLOCK_INPUT; | |
5735 | ||
949cf20f KS |
5736 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
5737 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
5738 | change_frame_size (f, XFASTINT (data->frame_lines), | |
5739 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 5740 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
5741 | if (XFASTINT (data->frame_menu_bar_lines) |
5742 | != previous_frame_menu_bar_lines) | |
f8ad443a | 5743 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 5744 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5745 | if (XFASTINT (data->frame_tool_bar_lines) |
5746 | != previous_frame_tool_bar_lines) | |
5747 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 5748 | #endif |
217f2871 | 5749 | #endif |
fd482be5 | 5750 | |
a46c0153 RS |
5751 | /* "Swap out" point from the selected window's buffer |
5752 | into the window itself. (Normally the pointm of the selected | |
5753 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5754 | restoring the window contents, and prevent it from |
5755 | being done later on when we select a new window. */ | |
596ae0cf RS |
5756 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5757 | { | |
5758 | w = XWINDOW (selected_window); | |
5759 | set_marker_both (w->pointm, | |
5760 | w->buffer, | |
5761 | BUF_PT (XBUFFER (w->buffer)), | |
5762 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5763 | } | |
5764 | ||
fd482be5 | 5765 | windows_or_buffers_changed++; |
29aeee73 | 5766 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5767 | |
5500c422 | 5768 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5769 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
5770 | really like to do is to free only those matrices not reused |
5771 | below. */ | |
5772 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
5773 | leaf_windows | |
5774 | = (struct window **) alloca (count_windows (root_window) | |
5775 | * sizeof (struct window *)); | |
5776 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5777 | ||
756b6edc RS |
5778 | /* Temporarily avoid any problems with windows that are smaller |
5779 | than they are supposed to be. */ | |
5780 | window_min_height = 1; | |
5781 | window_min_width = 1; | |
5782 | ||
fd482be5 JB |
5783 | /* Kludge Alert! |
5784 | Mark all windows now on frame as "deleted". | |
5785 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5786 | |
fd482be5 JB |
5787 | Save their current buffers in their height fields, since we may |
5788 | need it later, if a buffer saved in the configuration is now | |
5789 | dead. */ | |
5790 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
5791 | ||
5792 | for (k = 0; k < saved_windows->size; k++) | |
5793 | { | |
5794 | p = SAVED_WINDOW_N (saved_windows, k); | |
5795 | w = XWINDOW (p->window); | |
5796 | w->next = Qnil; | |
7ab12479 | 5797 | |
fd482be5 JB |
5798 | if (!NILP (p->parent)) |
5799 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5800 | XFASTINT (p->parent))->window; | |
5801 | else | |
5802 | w->parent = Qnil; | |
7ab12479 | 5803 | |
fd482be5 | 5804 | if (!NILP (p->prev)) |
7ab12479 | 5805 | { |
fd482be5 JB |
5806 | w->prev = SAVED_WINDOW_N (saved_windows, |
5807 | XFASTINT (p->prev))->window; | |
5808 | XWINDOW (w->prev)->next = p->window; | |
5809 | } | |
5810 | else | |
5811 | { | |
5812 | w->prev = Qnil; | |
5813 | if (!NILP (w->parent)) | |
5814 | { | |
949cf20f | 5815 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5816 | { |
5817 | XWINDOW (w->parent)->vchild = p->window; | |
5818 | XWINDOW (w->parent)->hchild = Qnil; | |
5819 | } | |
5820 | else | |
5821 | { | |
5822 | XWINDOW (w->parent)->hchild = p->window; | |
5823 | XWINDOW (w->parent)->vchild = Qnil; | |
5824 | } | |
5825 | } | |
5826 | } | |
5827 | ||
5828 | /* If we squirreled away the buffer in the window's height, | |
5829 | restore it now. */ | |
949cf20f KS |
5830 | if (BUFFERP (w->total_lines)) |
5831 | w->buffer = w->total_lines; | |
5832 | w->left_col = p->left_col; | |
5833 | w->top_line = p->top_line; | |
5834 | w->total_cols = p->total_cols; | |
5835 | w->total_lines = p->total_lines; | |
fd482be5 | 5836 | w->hscroll = p->hscroll; |
ea68264b | 5837 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5838 | w->display_table = p->display_table; |
949cf20f KS |
5839 | w->orig_top_line = p->orig_top_line; |
5840 | w->orig_total_lines = p->orig_total_lines; | |
5841 | w->left_margin_cols = p->left_margin_cols; | |
5842 | w->right_margin_cols = p->right_margin_cols; | |
5843 | w->left_fringe_width = p->left_fringe_width; | |
5844 | w->right_fringe_width = p->right_fringe_width; | |
5845 | w->fringes_outside_margins = p->fringes_outside_margins; | |
5846 | w->scroll_bar_width = p->scroll_bar_width; | |
5847 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
d834a2e9 | 5848 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5849 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5850 | |
5851 | /* Reinstall the saved buffer and pointers into it. */ | |
5852 | if (NILP (p->buffer)) | |
5853 | w->buffer = p->buffer; | |
5854 | else | |
5855 | { | |
5856 | if (!NILP (XBUFFER (p->buffer)->name)) | |
5857 | /* If saved buffer is alive, install it. */ | |
5858 | { | |
5859 | w->buffer = p->buffer; | |
5860 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
5861 | set_marker_restricted (w->start, p->start, w->buffer); |
5862 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 5863 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 5864 | p->mark, w->buffer); |
fd482be5 JB |
5865 | |
5866 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
5867 | restore the location of point in the buffer which was |
5868 | current when the window configuration was recorded. */ | |
6b54027b RS |
5869 | if (!EQ (p->buffer, new_current_buffer) |
5870 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
5871 | Fgoto_char (w->pointm); |
5872 | } | |
52a68e98 RS |
5873 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
5874 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 5875 | { |
fd482be5 JB |
5876 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
5877 | /* This will set the markers to beginning of visible | |
5878 | range. */ | |
5879 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5880 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
5881 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
5882 | } |
5883 | else | |
fd482be5 | 5884 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 5885 | are real. */ |
7ab12479 | 5886 | { |
fd482be5 JB |
5887 | /* Set window markers at start of visible range. */ |
5888 | if (XMARKER (w->start)->buffer == 0) | |
5889 | set_marker_restricted (w->start, make_number (0), | |
5890 | w->buffer); | |
5891 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
5892 | set_marker_restricted_both (w->pointm, w->buffer, |
5893 | BUF_PT (XBUFFER (w->buffer)), | |
5894 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 5895 | w->start_at_line_beg = Qt; |
7ab12479 JB |
5896 | } |
5897 | } | |
5898 | } | |
9ace597f | 5899 | |
fd482be5 | 5900 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
5901 | /* Prevent "swapping out point" in the old selected window |
5902 | using the buffer that has been restored into it. | |
a46c0153 | 5903 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 5904 | selected_window = Qnil; |
a46c0153 RS |
5905 | |
5906 | /* Arrange *not* to restore point in the buffer that was | |
5907 | current when the window configuration was saved. */ | |
243a5ce6 RS |
5908 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5909 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5910 | make_number (old_point), |
243a5ce6 | 5911 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5912 | |
14d87dc9 | 5913 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
5914 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
5915 | = selected_window; | |
7ab12479 | 5916 | |
db269683 | 5917 | if (NILP (data->focus_frame) |
017b2bad | 5918 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5919 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5920 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5921 | |
fd482be5 JB |
5922 | #if 0 /* I don't understand why this is needed, and it causes problems |
5923 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5924 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5925 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5926 | 0, 0); |
fd482be5 JB |
5927 | #endif |
5928 | ||
5929 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
5930 | if (previous_frame_lines != FRAME_LINES (f) |
5931 | || previous_frame_cols != FRAME_COLS (f)) | |
5932 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5933 | 0, 0, 0); |
e3678b64 | 5934 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5935 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5936 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5937 | make_number (0)); | |
4314246f | 5938 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5939 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5940 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5941 | make_number (0)); | |
4314246f | 5942 | #endif |
217f2871 | 5943 | #endif |
d2b35234 | 5944 | |
5500c422 | 5945 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5946 | for (i = n = 0; i < n_leaf_windows; ++i) |
5947 | { | |
5948 | if (NILP (leaf_windows[i]->buffer)) | |
5949 | { | |
5950 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 5951 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
5952 | && NILP (leaf_windows[i]->vchild)); |
5953 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5954 | } |
5955 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5956 | ++n; | |
5957 | } | |
177c0ea7 | 5958 | |
5500c422 GM |
5959 | adjust_glyphs (f); |
5960 | ||
d2b35234 | 5961 | UNBLOCK_INPUT; |
756b6edc | 5962 | |
478292ed RS |
5963 | /* Fselect_window will have made f the selected frame, so we |
5964 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5965 | selected window too, but that doesn't make the call to | |
5966 | Fselect_window above totally superfluous; it still sets f's | |
5967 | selected window. */ | |
5968 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5969 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5970 | |
5971 | if (! NILP (Vwindow_configuration_change_hook) | |
5972 | && ! NILP (Vrun_hooks)) | |
5973 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5974 | } | |
bdc727bf JB |
5975 | |
5976 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5977 | Fset_buffer (new_current_buffer); |
bdc727bf | 5978 | |
478292ed RS |
5979 | /* Restore the minimum heights recorded in the configuration. */ |
5980 | window_min_height = XINT (data->min_height); | |
5981 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5982 | |
478292ed | 5983 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5984 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5985 | |
3f8ab7bd | 5986 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5987 | } |
5988 | ||
44fa5b1e | 5989 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5990 | by setting their buffers to nil. */ |
5991 | ||
fd482be5 | 5992 | void |
7ab12479 JB |
5993 | delete_all_subwindows (w) |
5994 | register struct window *w; | |
5995 | { | |
265a9e55 | 5996 | if (!NILP (w->next)) |
7ab12479 | 5997 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5998 | if (!NILP (w->vchild)) |
7ab12479 | 5999 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6000 | if (!NILP (w->hchild)) |
7ab12479 | 6001 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6002 | |
949cf20f | 6003 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6004 | |
86e48436 RS |
6005 | if (!NILP (w->buffer)) |
6006 | unshow_buffer (w); | |
6007 | ||
605be8af JB |
6008 | /* We set all three of these fields to nil, to make sure that we can |
6009 | distinguish this dead window from any live window. Live leaf | |
6010 | windows will have buffer set, and combination windows will have | |
6011 | vchild or hchild set. */ | |
6012 | w->buffer = Qnil; | |
6013 | w->vchild = Qnil; | |
6014 | w->hchild = Qnil; | |
acf70840 GM |
6015 | |
6016 | Vwindow_list = Qnil; | |
7ab12479 JB |
6017 | } |
6018 | \f | |
6019 | static int | |
6020 | count_windows (window) | |
6021 | register struct window *window; | |
6022 | { | |
6023 | register int count = 1; | |
265a9e55 | 6024 | if (!NILP (window->next)) |
7ab12479 | 6025 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6026 | if (!NILP (window->vchild)) |
7ab12479 | 6027 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6028 | if (!NILP (window->hchild)) |
7ab12479 JB |
6029 | count += count_windows (XWINDOW (window->hchild)); |
6030 | return count; | |
6031 | } | |
6032 | ||
5500c422 | 6033 | |
177c0ea7 | 6034 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6035 | Value is last index + 1. */ |
6036 | ||
6037 | static int | |
6038 | get_leaf_windows (w, flat, i) | |
6039 | struct window *w; | |
6040 | struct window **flat; | |
6041 | int i; | |
6042 | { | |
6043 | while (w) | |
6044 | { | |
6045 | if (!NILP (w->hchild)) | |
6046 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6047 | else if (!NILP (w->vchild)) | |
6048 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6049 | else |
5500c422 GM |
6050 | flat[i++] = w; |
6051 | ||
6052 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6053 | } | |
6054 | ||
6055 | return i; | |
6056 | } | |
6057 | ||
6058 | ||
6059 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6060 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6061 | can be returned. */ | |
6062 | ||
6063 | struct glyph * | |
6064 | get_phys_cursor_glyph (w) | |
6065 | struct window *w; | |
6066 | { | |
6067 | struct glyph_row *row; | |
6068 | struct glyph *glyph; | |
6069 | ||
6070 | if (w->phys_cursor.vpos >= 0 | |
6071 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6072 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6073 | row->enabled_p) | |
6074 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6075 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6076 | else | |
6077 | glyph = NULL; | |
6078 | ||
6079 | return glyph; | |
6080 | } | |
6081 | ||
6082 | ||
7ab12479 JB |
6083 | static int |
6084 | save_window_save (window, vector, i) | |
6085 | Lisp_Object window; | |
6086 | struct Lisp_Vector *vector; | |
6087 | int i; | |
6088 | { | |
6089 | register struct saved_window *p; | |
6090 | register struct window *w; | |
6091 | register Lisp_Object tem; | |
6092 | ||
265a9e55 | 6093 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6094 | { |
6095 | p = SAVED_WINDOW_N (vector, i); | |
6096 | w = XWINDOW (window); | |
6097 | ||
2a1893f4 | 6098 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6099 | p->window = window; |
6100 | p->buffer = w->buffer; | |
949cf20f KS |
6101 | p->left_col = w->left_col; |
6102 | p->top_line = w->top_line; | |
6103 | p->total_cols = w->total_cols; | |
6104 | p->total_lines = w->total_lines; | |
7ab12479 | 6105 | p->hscroll = w->hscroll; |
ea68264b | 6106 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6107 | p->display_table = w->display_table; |
949cf20f KS |
6108 | p->orig_top_line = w->orig_top_line; |
6109 | p->orig_total_lines = w->orig_total_lines; | |
6110 | p->left_margin_cols = w->left_margin_cols; | |
6111 | p->right_margin_cols = w->right_margin_cols; | |
6112 | p->left_fringe_width = w->left_fringe_width; | |
6113 | p->right_fringe_width = w->right_fringe_width; | |
6114 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6115 | p->scroll_bar_width = w->scroll_bar_width; | |
6116 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
265a9e55 | 6117 | if (!NILP (w->buffer)) |
7ab12479 JB |
6118 | { |
6119 | /* Save w's value of point in the window configuration. | |
6120 | If w is the selected window, then get the value of point | |
6121 | from the buffer; pointm is garbage in the selected window. */ | |
6122 | if (EQ (window, selected_window)) | |
6123 | { | |
6124 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6125 | set_marker_both (p->pointm, w->buffer, |
6126 | BUF_PT (XBUFFER (w->buffer)), | |
6127 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6128 | } |
6129 | else | |
eeb82665 | 6130 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6131 | |
eeb82665 | 6132 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6133 | p->start_at_line_beg = w->start_at_line_beg; |
6134 | ||
6135 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6136 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6137 | } |
6138 | else | |
6139 | { | |
6140 | p->pointm = Qnil; | |
6141 | p->start = Qnil; | |
6142 | p->mark = Qnil; | |
6143 | p->start_at_line_beg = Qnil; | |
6144 | } | |
6145 | ||
265a9e55 | 6146 | if (NILP (w->parent)) |
7ab12479 JB |
6147 | p->parent = Qnil; |
6148 | else | |
6149 | p->parent = XWINDOW (w->parent)->temslot; | |
6150 | ||
265a9e55 | 6151 | if (NILP (w->prev)) |
7ab12479 JB |
6152 | p->prev = Qnil; |
6153 | else | |
6154 | p->prev = XWINDOW (w->prev)->temslot; | |
6155 | ||
265a9e55 | 6156 | if (!NILP (w->vchild)) |
7ab12479 | 6157 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6158 | if (!NILP (w->hchild)) |
7ab12479 JB |
6159 | i = save_window_save (w->hchild, vector, i); |
6160 | } | |
6161 | ||
6162 | return i; | |
6163 | } | |
6164 | ||
a0d76c27 | 6165 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6166 | Scurrent_window_configuration, 0, 1, 0, |
6167 | doc: /* Return an object representing the current window configuration of FRAME. | |
6168 | If FRAME is nil or omitted, use the selected frame. | |
6169 | This describes the number of windows, their sizes and current buffers, | |
6170 | and for each displayed buffer, where display starts, and the positions of | |
6171 | point and mark. An exception is made for point in the current buffer: | |
6172 | its value is -not- saved. | |
6173 | This also records the currently selected frame, and FRAME's focus | |
6174 | redirection (see `redirect-frame-focus'). */) | |
6175 | (frame) | |
44fa5b1e | 6176 | Lisp_Object frame; |
7ab12479 JB |
6177 | { |
6178 | register Lisp_Object tem; | |
6179 | register int n_windows; | |
6180 | register struct save_window_data *data; | |
da2792e0 | 6181 | register struct Lisp_Vector *vec; |
7ab12479 | 6182 | register int i; |
44fa5b1e | 6183 | FRAME_PTR f; |
43bad991 | 6184 | |
44fa5b1e | 6185 | if (NILP (frame)) |
1ae1a37d | 6186 | frame = selected_frame; |
b7826503 | 6187 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6188 | f = XFRAME (frame); |
7ab12479 | 6189 | |
44fa5b1e | 6190 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 6191 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
6192 | data = (struct save_window_data *)vec; |
6193 | ||
949cf20f KS |
6194 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
6195 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 6196 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 6197 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 6198 | data->selected_frame = selected_frame; |
44fa5b1e | 6199 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6200 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6201 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6202 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6203 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6204 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
6205 | XSETINT (data->min_height, window_min_height); |
6206 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
6207 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6208 | data->saved_windows = tem; | |
6209 | for (i = 0; i < n_windows; i++) | |
6210 | XVECTOR (tem)->contents[i] | |
6211 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 6212 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6213 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6214 | return (tem); |
6215 | } | |
6216 | ||
6217 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6218 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6219 | doc: /* Execute BODY, preserving window sizes and contents. |
6220 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6221 | Restore which buffer appears in which window, where display starts, |
6222 | and the value of point and mark for each window. | |
6223 | Also restore the choice of selected window. | |
6224 | Also restore which buffer is current. | |
6924dda6 MB |
6225 | Does not restore the value of point in current buffer. |
6226 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 6227 | (args) |
7ab12479 JB |
6228 | Lisp_Object args; |
6229 | { | |
6230 | register Lisp_Object val; | |
aed13378 | 6231 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6232 | |
6233 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6234 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6235 | val = Fprogn (args); |
6236 | return unbind_to (count, val); | |
6237 | } | |
5500c422 GM |
6238 | |
6239 | \f | |
6240 | /*********************************************************************** | |
6241 | Marginal Areas | |
6242 | ***********************************************************************/ | |
6243 | ||
6244 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6245 | 2, 3, 0, |
fdb82f93 | 6246 | doc: /* Set width of marginal areas of window WINDOW. |
e661376d KS |
6247 | If WINDOW is nil, set margins of the currently selected window. |
6248 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6249 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6250 | does the same for the right marginal area. A nil width parameter | |
6251 | means no margin. */) | |
fdb82f93 | 6252 | (window, left, right) |
5500c422 GM |
6253 | Lisp_Object window, left, right; |
6254 | { | |
6255 | struct window *w = decode_window (window); | |
5500c422 | 6256 | |
c2c3f202 KS |
6257 | /* Translate negative or zero widths to nil. |
6258 | Margins that are too wide have to be checked elsewhere. */ | |
6259 | ||
5500c422 | 6260 | if (!NILP (left)) |
c2c3f202 KS |
6261 | { |
6262 | CHECK_NUMBER (left); | |
6263 | if (XINT (left) <= 0) | |
6264 | left = Qnil; | |
6265 | } | |
5500c422 | 6266 | |
c2c3f202 KS |
6267 | if (!NILP (right)) |
6268 | { | |
6269 | CHECK_NUMBER (right); | |
6270 | if (XINT (right) <= 0) | |
6271 | right = Qnil; | |
6272 | } | |
5500c422 | 6273 | |
949cf20f KS |
6274 | if (!EQ (w->left_margin_cols, left) |
6275 | || !EQ (w->right_margin_cols, right)) | |
6276 | { | |
6277 | w->left_margin_cols = left; | |
6278 | w->right_margin_cols = right; | |
6279 | ||
6280 | adjust_window_margins (w); | |
6281 | ||
6282 | ++windows_or_buffers_changed; | |
6283 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6284 | } | |
5500c422 | 6285 | |
5500c422 GM |
6286 | return Qnil; |
6287 | } | |
6288 | ||
6289 | ||
6290 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6291 | 0, 1, 0, | |
fdb82f93 PJ |
6292 | doc: /* Get width of marginal areas of window WINDOW. |
6293 | If WINDOW is omitted or nil, use the currently selected window. | |
6294 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6295 | If a marginal area does not exist, its width will be returned | |
6296 | as nil. */) | |
6297 | (window) | |
5500c422 GM |
6298 | Lisp_Object window; |
6299 | { | |
6300 | struct window *w = decode_window (window); | |
949cf20f KS |
6301 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6302 | } | |
6303 | ||
6304 | ||
6305 | \f | |
6306 | /*********************************************************************** | |
6307 | Fringes | |
6308 | ***********************************************************************/ | |
6309 | ||
6310 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6311 | 2, 4, 0, | |
62c2f759 | 6312 | doc: /* Set the fringe widths of window WINDOW. |
62c2f759 LK |
6313 | If WINDOW is nil, set the fringe widths of the currently selected |
6314 | window. | |
e661376d KS |
6315 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6316 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6317 | fringe width. If a fringe width arg is nil, that means to use the | |
6318 | frame's default fringe width. Default fringe widths can be set with | |
6319 | the command `set-fringe-style'. | |
6320 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
62c2f759 LK |
6321 | outside of the display margins. By default, fringes are drawn between |
6322 | display marginal areas and the text area. */) | |
949cf20f KS |
6323 | (window, left, right, outside_margins) |
6324 | Lisp_Object window, left, right, outside_margins; | |
6325 | { | |
6326 | struct window *w = decode_window (window); | |
6327 | ||
6328 | if (!NILP (left)) | |
cb639b8f | 6329 | CHECK_NATNUM (left); |
949cf20f | 6330 | if (!NILP (right)) |
cb639b8f | 6331 | CHECK_NATNUM (right); |
949cf20f KS |
6332 | |
6333 | if (!EQ (w->left_fringe_width, left) | |
6334 | || !EQ (w->right_fringe_width, right) | |
6335 | || !EQ (w->fringes_outside_margins, outside_margins)) | |
6336 | { | |
6337 | w->left_fringe_width = left; | |
6338 | w->right_fringe_width = right; | |
6339 | w->fringes_outside_margins = outside_margins; | |
6340 | ||
6341 | adjust_window_margins (w); | |
6342 | ||
6343 | clear_glyph_matrix (w->current_matrix); | |
6344 | w->window_end_valid = Qnil; | |
6345 | ||
6346 | ++windows_or_buffers_changed; | |
6347 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6348 | } | |
6349 | ||
6350 | return Qnil; | |
6351 | } | |
6352 | ||
6353 | ||
6354 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6355 | 0, 1, 0, | |
6356 | doc: /* Get width of fringes of window WINDOW. | |
6357 | If WINDOW is omitted or nil, use the currently selected window. | |
467e281a | 6358 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6359 | (window) |
6360 | Lisp_Object window; | |
6361 | { | |
6362 | struct window *w = decode_window (window); | |
6363 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), | |
6364 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6365 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? | |
6366 | Qt : Qnil), Qnil))); | |
6367 | } | |
6368 | ||
6369 | ||
6370 | \f | |
6371 | /*********************************************************************** | |
6372 | Scroll bars | |
6373 | ***********************************************************************/ | |
6374 | ||
6375 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6376 | 2, 4, 0, | |
6377 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6378 | If window is nil, set scroll bars of the currently selected window. | |
6379 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6380 | this is automatically adjusted to a multiple of the frame column width. | |
6381 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6382 | bar: left, right, or nil. | |
2f71b5ea MY |
6383 | If WIDTH is nil, use the frame's scroll-bar width. |
6384 | If TYPE is t, use the frame's scroll-bar type. */) | |
79fd290e JB |
6385 | (window, width, vertical_type, horizontal_type) |
6386 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6387 | { |
6388 | struct window *w = decode_window (window); | |
6389 | ||
6390 | if (!NILP (width)) | |
0f8fe9a2 SM |
6391 | { |
6392 | CHECK_NATNUM (width); | |
949cf20f | 6393 | |
0f8fe9a2 SM |
6394 | if (XINT (width) == 0) |
6395 | vertical_type = Qnil; | |
6396 | } | |
949cf20f | 6397 | |
2f71b5ea | 6398 | if (!(EQ (vertical_type, Qnil) |
0cc1039f | 6399 | || EQ (vertical_type, Qleft) |
2f71b5ea MY |
6400 | || EQ (vertical_type, Qright) |
6401 | || EQ (vertical_type, Qt))) | |
6402 | error ("Invalid type of vertical scroll bar"); | |
6403 | ||
949cf20f KS |
6404 | if (!EQ (w->scroll_bar_width, width) |
6405 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6406 | { | |
6407 | w->scroll_bar_width = width; | |
6408 | w->vertical_scroll_bar_type = vertical_type; | |
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-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6424 | 0, 1, 0, | |
6425 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6426 | If WINDOW is omitted or nil, use the currently selected window. | |
12853c58 KS |
6427 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6428 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6429 | value. */) | |
949cf20f KS |
6430 | (window) |
6431 | Lisp_Object window; | |
6432 | { | |
6433 | struct window *w = decode_window (window); | |
6434 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6435 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6436 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6437 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6438 | Fcons (w->vertical_scroll_bar_type, | |
6439 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6440 | } |
6441 | ||
6442 | ||
7ab12479 | 6443 | \f |
5500c422 GM |
6444 | /*********************************************************************** |
6445 | Smooth scrolling | |
6446 | ***********************************************************************/ | |
6447 | ||
0cc1039f | 6448 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6449 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6450 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f KS |
6451 | Normally, value is a multiple of the canonical character height of WINDOW; |
6452 | optional second arg PIXELS_P means value is measured in pixels. */) | |
6453 | (window, pixels_p) | |
6454 | Lisp_Object window, pixels_p; | |
5500c422 | 6455 | { |
47004952 | 6456 | Lisp_Object result; |
5500c422 GM |
6457 | struct frame *f; |
6458 | struct window *w; | |
177c0ea7 | 6459 | |
5500c422 GM |
6460 | if (NILP (window)) |
6461 | window = selected_window; | |
47004952 | 6462 | else |
b7826503 | 6463 | CHECK_WINDOW (window); |
5500c422 GM |
6464 | w = XWINDOW (window); |
6465 | f = XFRAME (w->frame); | |
177c0ea7 | 6466 | |
5500c422 | 6467 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6468 | result = (NILP (pixels_p) |
6469 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6470 | : make_number (-w->vscroll)); | |
5500c422 | 6471 | else |
47004952 GM |
6472 | result = make_number (0); |
6473 | return result; | |
5500c422 GM |
6474 | } |
6475 | ||
6476 | ||
6477 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6478 | 2, 3, 0, |
fdb82f93 | 6479 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6480 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6481 | non-negative multiple of the canonical character height of WINDOW; | |
a0a37a6f LT |
6482 | optional third arg PIXELS_P non-nil means that VSCROLL is in pixels. |
6483 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it | |
6484 | corresponds to an integral number of pixels. The return value is the | |
6485 | result of this rounding. | |
6486 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6487 | (window, vscroll, pixels_p) |
6488 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6489 | { |
6490 | struct window *w; | |
6491 | struct frame *f; | |
177c0ea7 | 6492 | |
5500c422 GM |
6493 | if (NILP (window)) |
6494 | window = selected_window; | |
47004952 | 6495 | else |
b7826503 PJ |
6496 | CHECK_WINDOW (window); |
6497 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6498 | |
5500c422 GM |
6499 | w = XWINDOW (window); |
6500 | f = XFRAME (w->frame); | |
6501 | ||
6502 | if (FRAME_WINDOW_P (f)) | |
6503 | { | |
6504 | int old_dy = w->vscroll; | |
177c0ea7 | 6505 | |
0cc1039f KS |
6506 | w->vscroll = - (NILP (pixels_p) |
6507 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6508 | : XFLOATINT (vscroll)); | |
47004952 | 6509 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6510 | |
e56263e5 KS |
6511 | if (w->vscroll != old_dy) |
6512 | { | |
6513 | /* Adjust glyph matrix of the frame if the virtual display | |
6514 | area becomes larger than before. */ | |
6515 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6516 | adjust_glyphs (f); | |
177c0ea7 | 6517 | |
e56263e5 KS |
6518 | /* Prevent redisplay shortcuts. */ |
6519 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6520 | } | |
5500c422 | 6521 | } |
177c0ea7 | 6522 | |
0cc1039f | 6523 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6524 | } |
177c0ea7 | 6525 | |
7bbb5782 GM |
6526 | \f |
6527 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6528 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6529 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6530 | |
6531 | void | |
f95464e4 | 6532 | foreach_window (f, fn, user_data) |
7bbb5782 | 6533 | struct frame *f; |
f95464e4 GM |
6534 | int (* fn) P_ ((struct window *, void *)); |
6535 | void *user_data; | |
7bbb5782 | 6536 | { |
f95464e4 | 6537 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
6538 | } |
6539 | ||
6540 | ||
6541 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6542 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6543 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6544 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6545 | |
67492200 | 6546 | static int |
f95464e4 | 6547 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 6548 | struct window *w; |
f95464e4 GM |
6549 | int (* fn) P_ ((struct window *, void *)); |
6550 | void *user_data; | |
7bbb5782 | 6551 | { |
67492200 | 6552 | int cont; |
177c0ea7 | 6553 | |
67492200 | 6554 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6555 | { |
6556 | if (!NILP (w->hchild)) | |
f95464e4 | 6557 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6558 | else if (!NILP (w->vchild)) |
f95464e4 | 6559 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6560 | else |
0f532a9a | 6561 | cont = fn (w, user_data); |
177c0ea7 | 6562 | |
7bbb5782 GM |
6563 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6564 | } | |
67492200 GM |
6565 | |
6566 | return cont; | |
7bbb5782 GM |
6567 | } |
6568 | ||
6569 | ||
6d194a45 | 6570 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6571 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6572 | the window start. */ |
6573 | ||
67492200 | 6574 | static int |
7bbb5782 GM |
6575 | freeze_window_start (w, freeze_p) |
6576 | struct window *w; | |
f95464e4 | 6577 | void *freeze_p; |
7bbb5782 GM |
6578 | { |
6579 | if (w == XWINDOW (selected_window) | |
6580 | || MINI_WINDOW_P (w) | |
6581 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 6582 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 6583 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 6584 | freeze_p = NULL; |
177c0ea7 | 6585 | |
f95464e4 | 6586 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6587 | return 1; |
7bbb5782 GM |
6588 | } |
6589 | ||
6590 | ||
6591 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6592 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6593 | means freeze the window start. */ | |
6594 | ||
6595 | void | |
6596 | freeze_window_starts (f, freeze_p) | |
6597 | struct frame *f; | |
6598 | int freeze_p; | |
6599 | { | |
cbccabec | 6600 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6601 | } |
5500c422 GM |
6602 | |
6603 | \f | |
6604 | /*********************************************************************** | |
6605 | Initialization | |
6606 | ***********************************************************************/ | |
6607 | ||
cbff28e8 RS |
6608 | /* Return 1 if window configurations C1 and C2 |
6609 | describe the same state of affairs. This is used by Fequal. */ | |
6610 | ||
6611 | int | |
2f8274be | 6612 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 6613 | Lisp_Object c1, c2; |
2f8274be | 6614 | int ignore_positions; |
cbff28e8 RS |
6615 | { |
6616 | register struct save_window_data *d1, *d2; | |
6617 | struct Lisp_Vector *sw1, *sw2; | |
6618 | int i; | |
6619 | ||
4d3edcb4 GM |
6620 | if (!WINDOW_CONFIGURATIONP (c1)) |
6621 | wrong_type_argument (Qwindow_configuration_p, c1); | |
6622 | if (!WINDOW_CONFIGURATIONP (c2)) | |
6623 | wrong_type_argument (Qwindow_configuration_p, c2); | |
177c0ea7 | 6624 | |
cbff28e8 RS |
6625 | d1 = (struct save_window_data *) XVECTOR (c1); |
6626 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6627 | sw1 = XVECTOR (d1->saved_windows); | |
6628 | sw2 = XVECTOR (d2->saved_windows); | |
6629 | ||
949cf20f | 6630 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 6631 | return 0; |
949cf20f | 6632 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
6633 | return 0; |
6634 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
6635 | return 0; | |
6636 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6637 | return 0; | |
6638 | /* Don't compare the current_window field directly. | |
6639 | Instead see w1_is_current and w2_is_current, below. */ | |
6640 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6641 | return 0; | |
2f8274be | 6642 | if (! ignore_positions) |
3f49fddc KS |
6643 | { |
6644 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6645 | return 0; | |
6646 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6647 | return 0; | |
6648 | } | |
cbff28e8 RS |
6649 | /* Don't compare the root_window field. |
6650 | We don't require the two configurations | |
6651 | to use the same window object, | |
6652 | and the two root windows must be equivalent | |
6653 | if everything else compares equal. */ | |
6654 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6655 | return 0; | |
6656 | if (! EQ (d1->min_width, d2->min_width)) | |
6657 | return 0; | |
6658 | if (! EQ (d1->min_height, d2->min_height)) | |
6659 | return 0; | |
6660 | ||
6661 | /* Verify that the two confis have the same number of windows. */ | |
6662 | if (sw1->size != sw2->size) | |
6663 | return 0; | |
6664 | ||
6665 | for (i = 0; i < sw1->size; i++) | |
6666 | { | |
6667 | struct saved_window *p1, *p2; | |
6668 | int w1_is_current, w2_is_current; | |
6669 | ||
6670 | p1 = SAVED_WINDOW_N (sw1, i); | |
6671 | p2 = SAVED_WINDOW_N (sw2, i); | |
6672 | ||
6673 | /* Verify that the current windows in the two | |
6674 | configurations correspond to each other. */ | |
6675 | w1_is_current = EQ (d1->current_window, p1->window); | |
6676 | w2_is_current = EQ (d2->current_window, p2->window); | |
6677 | ||
6678 | if (w1_is_current != w2_is_current) | |
6679 | return 0; | |
6680 | ||
6681 | /* Verify that the corresponding windows do match. */ | |
6682 | if (! EQ (p1->buffer, p2->buffer)) | |
6683 | return 0; | |
949cf20f | 6684 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6685 | return 0; |
949cf20f | 6686 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6687 | return 0; |
949cf20f | 6688 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6689 | return 0; |
949cf20f | 6690 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6691 | return 0; |
cbff28e8 RS |
6692 | if (! EQ (p1->display_table, p2->display_table)) |
6693 | return 0; | |
6694 | if (! EQ (p1->parent, p2->parent)) | |
6695 | return 0; | |
6696 | if (! EQ (p1->prev, p2->prev)) | |
6697 | return 0; | |
2f8274be RS |
6698 | if (! ignore_positions) |
6699 | { | |
6700 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6701 | return 0; | |
ea68264b GM |
6702 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6703 | return 0; | |
2f8274be RS |
6704 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6705 | return 0; | |
6706 | if (NILP (Fequal (p1->start, p2->start))) | |
6707 | return 0; | |
6708 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
6709 | return 0; | |
6710 | if (NILP (Fequal (p1->mark, p2->mark))) | |
6711 | return 0; | |
6712 | } | |
949cf20f KS |
6713 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
6714 | return 0; | |
6715 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
6716 | return 0; | |
6717 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
6718 | return 0; | |
6719 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
6720 | return 0; | |
6721 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
6722 | return 0; | |
6723 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
6724 | return 0; | |
6725 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
6726 | return 0; | |
cbff28e8 RS |
6727 | } |
6728 | ||
6729 | return 1; | |
6730 | } | |
2f8274be RS |
6731 | |
6732 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6733 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6734 | doc: /* Compare two window configurations as regards the structure of windows. |
6735 | This function ignores details such as the values of point and mark | |
6736 | and scrolling positions. */) | |
6737 | (x, y) | |
2f8274be RS |
6738 | Lisp_Object x, y; |
6739 | { | |
6740 | if (compare_window_configurations (x, y, 1)) | |
6741 | return Qt; | |
6742 | return Qnil; | |
6743 | } | |
cbff28e8 | 6744 | \f |
dfcf069d | 6745 | void |
7ab12479 JB |
6746 | init_window_once () |
6747 | { | |
1ae1a37d GM |
6748 | struct frame *f = make_terminal_frame (); |
6749 | XSETFRAME (selected_frame, f); | |
6750 | Vterminal_frame = selected_frame; | |
6751 | minibuf_window = f->minibuffer_window; | |
6752 | selected_window = f->selected_window; | |
6753 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6754 | |
6755 | window_initialized = 1; | |
7ab12479 JB |
6756 | } |
6757 | ||
67492200 GM |
6758 | void |
6759 | init_window () | |
6760 | { | |
6761 | Vwindow_list = Qnil; | |
6762 | } | |
6763 | ||
dfcf069d | 6764 | void |
7ab12479 JB |
6765 | syms_of_window () |
6766 | { | |
8a37516b GM |
6767 | Qwindow_size_fixed = intern ("window-size-fixed"); |
6768 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 6769 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 6770 | |
543f5fb1 RS |
6771 | staticpro (&Qwindow_configuration_change_hook); |
6772 | Qwindow_configuration_change_hook | |
6773 | = intern ("window-configuration-change-hook"); | |
6774 | ||
7ab12479 JB |
6775 | Qwindowp = intern ("windowp"); |
6776 | staticpro (&Qwindowp); | |
6777 | ||
3f8ab7bd RS |
6778 | Qwindow_configuration_p = intern ("window-configuration-p"); |
6779 | staticpro (&Qwindow_configuration_p); | |
6780 | ||
806b4d9b JB |
6781 | Qwindow_live_p = intern ("window-live-p"); |
6782 | staticpro (&Qwindow_live_p); | |
605be8af | 6783 | |
2cccc823 | 6784 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
6785 | staticpro (&Qtemp_buffer_show_hook); |
6786 | ||
67492200 | 6787 | staticpro (&Vwindow_list); |
8bfb170b KS |
6788 | |
6789 | minibuf_selected_window = Qnil; | |
3dbab091 | 6790 | staticpro (&minibuf_selected_window); |
67492200 | 6791 | |
7ab12479 | 6792 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
6793 | doc: /* Non-nil means call as function to display a help buffer. |
6794 | The function is called with one argument, the buffer to be displayed. | |
6795 | Used by `with-output-to-temp-buffer'. | |
6796 | If this function is used, then it must do the entire job of showing | |
6797 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
6798 | Vtemp_buffer_show_function = Qnil; |
6799 | ||
6800 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
6801 | doc: /* If non-nil, function to call to handle `display-buffer'. |
6802 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
6803 | that the currently selected window is not acceptable. |
6804 | It should choose or create a window, display the specified buffer in it, | |
6805 | and return the window. | |
fdb82f93 PJ |
6806 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
6807 | work using this function. */); | |
7ab12479 JB |
6808 | Vdisplay_buffer_function = Qnil; |
6809 | ||
6529ed87 | 6810 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
6811 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
6812 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
6813 | Veven_window_heights = Qt; |
6814 | ||
7ab12479 | 6815 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 6816 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6817 | Vminibuf_scroll_window = Qnil; |
6818 | ||
cc91894c | 6819 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 6820 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6821 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6822 | is displayed in the `mode-line' face. */); | |
6823 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6824 | |
7ab12479 | 6825 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 6826 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6827 | Vother_window_scroll_buffer = Qnil; |
6828 | ||
44fa5b1e | 6829 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 6830 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 6831 | pop_up_frames = 0; |
7ab12479 | 6832 | |
e56263e5 KS |
6833 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
6834 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
6835 | auto_window_vscroll_p = 1; | |
6836 | ||
9c3da604 | 6837 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
6838 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
6839 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
6840 | display_buffer_reuse_frames = 0; |
6841 | ||
44fa5b1e | 6842 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
6843 | doc: /* Function to call to handle automatic new frame creation. |
6844 | It is called with no arguments and should return a newly created frame. | |
6845 | ||
6846 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
6847 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 6848 | Vpop_up_frame_function = Qnil; |
7ab12479 | 6849 | |
a90712c2 | 6850 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 6851 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
6852 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
6853 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
6854 | using `special-display-function'. See also `special-display-regexps'. |
6855 | ||
6856 | An element of the list can be a list instead of just a string. | |
6857 | There are two ways to use a list as an element: | |
6858 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
6859 | In the first case, the FRAME-PARAMETERS are pairs of the form |
6860 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
6861 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
6862 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
6863 | All this is done by the function found in `special-display-function'. |
6864 | ||
499858c5 RS |
6865 | If the specified frame parameters include (same-buffer . t), the |
6866 | buffer is displayed in the currently selected window. Otherwise, if | |
6867 | they include (same-frame . t), the buffer is displayed in a new window | |
6868 | in the currently selected frame. | |
6869 | ||
fdb82f93 PJ |
6870 | If this variable appears \"not to work\", because you add a name to it |
6871 | but that buffer still appears in the selected window, look at the | |
6872 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6873 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6874 | Vspecial_display_buffer_names = Qnil; |
6875 | ||
6876 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 6877 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
6878 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
6879 | if any regexp in this list matches the buffer name, it makes a | |
6880 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
6881 | |
6882 | An element of the list can be a list instead of just a string. | |
6883 | There are two ways to use a list as an element: | |
6884 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
6885 | In the first case, the FRAME-PARAMETERS are pairs of the form |
6886 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
6887 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
6888 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
6889 | All this is done by the function found in `special-display-function'. |
6890 | ||
499858c5 RS |
6891 | If the specified frame parameters include (same-buffer . t), the |
6892 | buffer is displayed in the currently selected window. Otherwise, if | |
6893 | they include (same-frame . t), the buffer is displayed in a new window | |
6894 | in the currently selected frame. | |
6895 | ||
fdb82f93 PJ |
6896 | If this variable appears \"not to work\", because you add a regexp to it |
6897 | but the matching buffers still appear in the selected window, look at the | |
6898 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6899 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6900 | Vspecial_display_regexps = Qnil; |
6901 | ||
6902 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
6903 | doc: /* Function to call to make a new frame for a special buffer. |
6904 | It is called with two arguments, the buffer and optional buffer specific | |
6905 | data, and should return a window displaying that buffer. | |
a5731348 SM |
6906 | The default value normally makes a separate frame for the buffer, |
6907 | using `special-display-frame-alist' to specify the frame parameters. | |
6908 | But if the buffer specific data includes (same-buffer . t) then the | |
6909 | buffer is displayed in the current selected window. | |
6910 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
6911 | a new window in the currently selected frame. | |
6912 | ||
6913 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 6914 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
6915 | Vspecial_display_function = Qnil; |
6916 | ||
855d8627 | 6917 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
6918 | doc: /* *List of buffer names that should appear in the selected window. |
6919 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
6920 | switches to it in the selected window, rather than making it appear | |
6921 | in some other window. | |
6922 | ||
6923 | An element of the list can be a cons cell instead of just a string. | |
6924 | Then the car must be a string, which specifies the buffer name. | |
6925 | This is for compatibility with `special-display-buffer-names'; | |
6926 | the cdr of the cons cell is ignored. | |
6927 | ||
6928 | See also `same-window-regexps'. */); | |
855d8627 RS |
6929 | Vsame_window_buffer_names = Qnil; |
6930 | ||
6931 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
6932 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
6933 | If a buffer name matches one of these regexps, then displaying it | |
6934 | using `display-buffer' or `pop-to-buffer' switches to it | |
6935 | in the selected window, rather than making it appear in some other window. | |
6936 | ||
6937 | An element of the list can be a cons cell instead of just a string. | |
6938 | Then the car must be a string, which specifies the buffer name. | |
6939 | This is for compatibility with `special-display-buffer-names'; | |
6940 | the cdr of the cons cell is ignored. | |
6941 | ||
6942 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
6943 | Vsame_window_regexps = Qnil; |
6944 | ||
7ab12479 | 6945 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 6946 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
6947 | pop_up_windows = 1; |
6948 | ||
6949 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 6950 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6951 | next_screen_context_lines = 2; |
6952 | ||
6953 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
876e2665 | 6954 | doc: /* *A window must be at least this tall to be eligible for splitting by `display-buffer'. |
fdb82f93 | 6955 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
6956 | split_height_threshold = 500; |
6957 | ||
6958 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 6959 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
6960 | window_min_height = 4; |
6961 | ||
6962 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 6963 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
6964 | window_min_width = 10; |
6965 | ||
5500c422 GM |
6966 | DEFVAR_LISP ("scroll-preserve-screen-position", |
6967 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
6968 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
6969 | A value of nil means point does not keep its screen position except | |
6970 | at the scroll margin or window boundary respectively. | |
6971 | A value of t means point keeps its screen position if the scroll | |
6972 | command moved it vertically out of the window, e.g. when scrolling | |
6973 | by full screens. | |
6974 | Any other value means point always keeps its screen position. */); | |
5500c422 | 6975 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6976 | |
543f5fb1 RS |
6977 | DEFVAR_LISP ("window-configuration-change-hook", |
6978 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
6979 | doc: /* Functions to call when window configuration changes. |
6980 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
6981 | Vwindow_configuration_change_hook = Qnil; |
6982 | ||
7ab12479 JB |
6983 | defsubr (&Sselected_window); |
6984 | defsubr (&Sminibuffer_window); | |
6985 | defsubr (&Swindow_minibuffer_p); | |
6986 | defsubr (&Swindowp); | |
806b4d9b | 6987 | defsubr (&Swindow_live_p); |
7ab12479 JB |
6988 | defsubr (&Spos_visible_in_window_p); |
6989 | defsubr (&Swindow_buffer); | |
6990 | defsubr (&Swindow_height); | |
6991 | defsubr (&Swindow_width); | |
6992 | defsubr (&Swindow_hscroll); | |
6993 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6994 | defsubr (&Swindow_redisplay_end_trigger); |
6995 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6996 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
6997 | defsubr (&Swindow_pixel_edges); |
6998 | defsubr (&Swindow_inside_edges); | |
6999 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7000 | defsubr (&Scoordinates_in_window_p); |
7001 | defsubr (&Swindow_at); | |
7ab12479 JB |
7002 | defsubr (&Swindow_point); |
7003 | defsubr (&Swindow_start); | |
7004 | defsubr (&Swindow_end); | |
7005 | defsubr (&Sset_window_point); | |
7006 | defsubr (&Sset_window_start); | |
7007 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7008 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7009 | defsubr (&Swindow_display_table); |
7010 | defsubr (&Sset_window_display_table); | |
7011 | defsubr (&Snext_window); | |
7012 | defsubr (&Sprevious_window); | |
7013 | defsubr (&Sother_window); | |
7014 | defsubr (&Sget_lru_window); | |
7015 | defsubr (&Sget_largest_window); | |
7016 | defsubr (&Sget_buffer_window); | |
7017 | defsubr (&Sdelete_other_windows); | |
7018 | defsubr (&Sdelete_windows_on); | |
7019 | defsubr (&Sreplace_buffer_in_windows); | |
7020 | defsubr (&Sdelete_window); | |
7021 | defsubr (&Sset_window_buffer); | |
7022 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7023 | defsubr (&Sspecial_display_p); |
7024 | defsubr (&Ssame_window_p); | |
7ab12479 | 7025 | defsubr (&Sdisplay_buffer); |
e661376d | 7026 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7027 | defsubr (&Ssplit_window); |
7028 | defsubr (&Senlarge_window); | |
7029 | defsubr (&Sshrink_window); | |
7030 | defsubr (&Sscroll_up); | |
7031 | defsubr (&Sscroll_down); | |
7032 | defsubr (&Sscroll_left); | |
7033 | defsubr (&Sscroll_right); | |
ccd0664b | 7034 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7035 | defsubr (&Sscroll_other_window); |
fa832261 | 7036 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7037 | defsubr (&Srecenter); |
81fe0836 | 7038 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7039 | defsubr (&Smove_to_window_line); |
7040 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7041 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7042 | defsubr (&Sset_window_configuration); |
7043 | defsubr (&Scurrent_window_configuration); | |
7044 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
7045 | defsubr (&Sset_window_margins); |
7046 | defsubr (&Swindow_margins); | |
949cf20f KS |
7047 | defsubr (&Sset_window_fringes); |
7048 | defsubr (&Swindow_fringes); | |
7049 | defsubr (&Sset_window_scroll_bars); | |
7050 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7051 | defsubr (&Swindow_vscroll); |
7052 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7053 | defsubr (&Scompare_window_configurations); |
67492200 | 7054 | defsubr (&Swindow_list); |
7ab12479 JB |
7055 | } |
7056 | ||
dfcf069d | 7057 | void |
7ab12479 JB |
7058 | keys_of_window () |
7059 | { | |
7060 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7061 | initial_define_key (control_x_map, '2', "split-window"); | |
7062 | initial_define_key (control_x_map, '0', "delete-window"); | |
7063 | initial_define_key (control_x_map, 'o', "other-window"); | |
7064 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7065 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7066 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7067 | ||
7068 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7069 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7070 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7071 | ||
7072 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7073 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7074 | } | |
ab5796a9 MB |
7075 | |
7076 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
7077 | (do not change this comment) */ |