Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
ab80314b | 3 | Copyright (C) 1985,86,87, 1993,94,95,96,97,98, 2000,01,02,03,04 |
6529ed87 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1113d9db | 10 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 22 | |
18160b98 | 23 | #include <config.h> |
7ab12479 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
3e4731a3 | 26 | #include "keyboard.h" |
e35f6ff7 | 27 | #include "keymap.h" |
44fa5b1e | 28 | #include "frame.h" |
7ab12479 JB |
29 | #include "window.h" |
30 | #include "commands.h" | |
31 | #include "indent.h" | |
32 | #include "termchar.h" | |
33 | #include "disptab.h" | |
dfcf069d | 34 | #include "dispextern.h" |
5500c422 GM |
35 | #include "blockinput.h" |
36 | #include "intervals.h" | |
37 | ||
6d55d620 | 38 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 39 | #include "xterm.h" |
5500c422 | 40 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
41 | #ifdef WINDOWSNT |
42 | #include "w32term.h" | |
43 | #endif | |
1e3c8885 EZ |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #endif | |
e0f712ba | 47 | #ifdef MAC_OS |
1a578e9b AC |
48 | #include "macterm.h" |
49 | #endif | |
5500c422 | 50 | |
5500c422 | 51 | |
3f8ab7bd | 52 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
90647b07 | 53 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 54 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 55 | |
521b203e | 56 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 57 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
58 | static int count_windows P_ ((struct window *)); |
59 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
60 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
61 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
62 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 63 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 64 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 65 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 66 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 67 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
f95284d2 | 68 | static void enlarge_window P_ ((Lisp_Object, int, int, int)); |
67492200 | 69 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 70 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
71 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
72 | Lisp_Object)); | |
67492200 GM |
73 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
74 | Lisp_Object, int)); | |
75 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
76 | Lisp_Object *)); | |
f95464e4 GM |
77 | static int foreach_window_1 P_ ((struct window *, |
78 | int (* fn) (struct window *, void *), | |
79 | void *)); | |
cd2904bd | 80 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 81 | |
b0b7ed0e GM |
82 | /* The value of `window-size-fixed'. */ |
83 | ||
84 | int window_size_fixed; | |
85 | ||
7ab12479 JB |
86 | /* This is the window in which the terminal's cursor should |
87 | be left when nothing is being done with it. This must | |
88 | always be a leaf window, and its buffer is selected by | |
89 | the top level editing loop at the end of each command. | |
90 | ||
91 | This value is always the same as | |
44fa5b1e | 92 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
93 | |
94 | Lisp_Object selected_window; | |
95 | ||
67492200 GM |
96 | /* A list of all windows for use by next_window and Fwindow_list. |
97 | Functions creating or deleting windows should invalidate this cache | |
98 | by setting it to nil. */ | |
99 | ||
100 | Lisp_Object Vwindow_list; | |
101 | ||
5500c422 GM |
102 | /* The mini-buffer window of the selected frame. |
103 | Note that you cannot test for mini-bufferness of an arbitrary window | |
104 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 105 | the selected window. */ |
5500c422 | 106 | |
7ab12479 JB |
107 | Lisp_Object minibuf_window; |
108 | ||
3f49fddc KS |
109 | /* Non-nil means it is the window whose mode line should be |
110 | shown as the selected window when the minibuffer is selected. */ | |
111 | ||
3dbab091 | 112 | Lisp_Object minibuf_selected_window; |
3f49fddc | 113 | |
7ab12479 | 114 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
115 | when the mini-buffer is selected. */ |
116 | ||
7ab12479 JB |
117 | Lisp_Object Vminibuf_scroll_window; |
118 | ||
119 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 120 | |
7ab12479 JB |
121 | Lisp_Object Vother_window_scroll_buffer; |
122 | ||
7ab12479 | 123 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 124 | |
7ab12479 JB |
125 | Lisp_Object Vtemp_buffer_show_function; |
126 | ||
e56263e5 KS |
127 | /* Non-zero means line and page scrolling on tall lines (with images) |
128 | does partial scrolling by modifying window-vscroll. */ | |
129 | ||
130 | int auto_window_vscroll_p; | |
131 | ||
cc91894c KS |
132 | /* Non-zero means to use mode-line-inactive face in all windows but the |
133 | selected-window and the minibuffer-scroll-window when the | |
134 | minibuffer is active. */ | |
135 | int mode_line_in_non_selected_windows; | |
26124d5e | 136 | |
7ab12479 | 137 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 138 | |
31ade731 SM |
139 | EMACS_INT window_min_height; |
140 | EMACS_INT window_min_width; | |
7ab12479 JB |
141 | |
142 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 143 | |
7ab12479 JB |
144 | int pop_up_windows; |
145 | ||
44fa5b1e | 146 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 147 | |
44fa5b1e | 148 | int pop_up_frames; |
7ab12479 | 149 | |
9c3da604 GM |
150 | /* Nonzero means reuse existing frames for displaying buffers. */ |
151 | ||
152 | int display_buffer_reuse_frames; | |
153 | ||
7ab12479 | 154 | /* Non-nil means use this function instead of default */ |
5500c422 | 155 | |
44fa5b1e | 156 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
157 | |
158 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 159 | |
7ab12479 JB |
160 | Lisp_Object Vdisplay_buffer_function; |
161 | ||
6529ed87 GM |
162 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
163 | ||
164 | Lisp_Object Veven_window_heights; | |
165 | ||
a90712c2 | 166 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 167 | |
a90712c2 RS |
168 | Lisp_Object Vspecial_display_buffer_names; |
169 | ||
170 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 171 | |
a90712c2 RS |
172 | Lisp_Object Vspecial_display_regexps; |
173 | ||
174 | /* Function to pop up a special frame. */ | |
5500c422 | 175 | |
a90712c2 RS |
176 | Lisp_Object Vspecial_display_function; |
177 | ||
855d8627 | 178 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 179 | |
855d8627 RS |
180 | Lisp_Object Vsame_window_buffer_names; |
181 | ||
182 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 183 | |
855d8627 RS |
184 | Lisp_Object Vsame_window_regexps; |
185 | ||
a58ec57d | 186 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 187 | |
a58ec57d RS |
188 | Lisp_Object Qtemp_buffer_show_hook; |
189 | ||
37962e60 | 190 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 191 | if that window is more than this high. */ |
5500c422 | 192 | |
31ade731 | 193 | EMACS_INT split_height_threshold; |
7ab12479 JB |
194 | |
195 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 196 | |
31ade731 | 197 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
198 | |
199 | /* Incremented for each window created. */ | |
5500c422 | 200 | |
7ab12479 JB |
201 | static int sequence_number; |
202 | ||
5b03d3c0 | 203 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 204 | |
5b03d3c0 RS |
205 | static int window_initialized; |
206 | ||
543f5fb1 | 207 | /* Hook to run when window config changes. */ |
5500c422 | 208 | |
543f5fb1 RS |
209 | Lisp_Object Qwindow_configuration_change_hook; |
210 | Lisp_Object Vwindow_configuration_change_hook; | |
211 | ||
d0c38d63 | 212 | /* Non-nil means scroll commands try to put point |
9317a85d | 213 | at the same screen height as previously. */ |
9317a85d | 214 | |
5500c422 GM |
215 | Lisp_Object Vscroll_preserve_screen_position; |
216 | ||
217 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 218 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 219 | static int inhibit_frame_unsplittable; |
5500c422 | 220 | #endif /* 0 */ |
7d601aaa | 221 | |
31ade731 | 222 | extern EMACS_INT scroll_margin; |
9317a85d | 223 | |
dba06815 | 224 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
225 | \f |
226 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
227 | doc: /* Returns t if OBJECT is a window. */) |
228 | (object) | |
413430c5 | 229 | Lisp_Object object; |
7ab12479 | 230 | { |
413430c5 | 231 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
232 | } |
233 | ||
806b4d9b | 234 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 235 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
236 | (object) |
237 | Lisp_Object object; | |
605be8af | 238 | { |
9e571f49 | 239 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
240 | } |
241 | ||
7ab12479 JB |
242 | Lisp_Object |
243 | make_window () | |
244 | { | |
cffec418 | 245 | Lisp_Object val; |
7ab12479 | 246 | register struct window *p; |
cffec418 | 247 | |
26605be9 | 248 | p = allocate_window (); |
2a1893f4 SM |
249 | ++sequence_number; |
250 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
251 | XSETFASTINT (p->left_col, 0); |
252 | XSETFASTINT (p->top_line, 0); | |
253 | XSETFASTINT (p->total_lines, 0); | |
254 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 255 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 256 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 257 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
258 | p->start = Fmake_marker (); |
259 | p->pointm = Fmake_marker (); | |
d834a2e9 | 260 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 261 | p->frame = Qnil; |
7ab12479 JB |
262 | p->display_table = Qnil; |
263 | p->dedicated = Qnil; | |
5500c422 GM |
264 | p->pseudo_window_p = 0; |
265 | bzero (&p->cursor, sizeof (p->cursor)); | |
266 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
267 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
268 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 269 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 270 | p->phys_cursor_type = -1; |
4b26579e | 271 | p->phys_cursor_width = -1; |
5500c422 GM |
272 | p->must_be_updated_p = 0; |
273 | XSETFASTINT (p->window_end_vpos, 0); | |
274 | XSETFASTINT (p->window_end_pos, 0); | |
275 | p->window_end_valid = Qnil; | |
276 | p->vscroll = 0; | |
cffec418 | 277 | XSETWINDOW (val, p); |
5500c422 | 278 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 279 | p->frozen_window_start_p = 0; |
6b448755 RS |
280 | p->height_fixed_p = 0; |
281 | p->last_cursor_off_p = p->cursor_off_p = 0; | |
949cf20f KS |
282 | p->left_margin_cols = Qnil; |
283 | p->right_margin_cols = Qnil; | |
284 | p->left_fringe_width = Qnil; | |
285 | p->right_fringe_width = Qnil; | |
286 | p->fringes_outside_margins = Qnil; | |
287 | p->scroll_bar_width = Qnil; | |
288 | p->vertical_scroll_bar_type = Qt; | |
6b61353c | 289 | p->overlay_arrow_bitmap = 0; |
67492200 GM |
290 | |
291 | Vwindow_list = Qnil; | |
7ab12479 JB |
292 | return val; |
293 | } | |
294 | ||
295 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
296 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
297 | () | |
7ab12479 JB |
298 | { |
299 | return selected_window; | |
300 | } | |
301 | ||
83762ba4 | 302 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
303 | doc: /* Return the window used now for minibuffers. |
304 | If the optional argument FRAME is specified, return the minibuffer window | |
305 | used by that frame. */) | |
306 | (frame) | |
83762ba4 | 307 | Lisp_Object frame; |
7ab12479 | 308 | { |
83762ba4 | 309 | if (NILP (frame)) |
1ae1a37d | 310 | frame = selected_frame; |
b7826503 | 311 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 312 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
313 | } |
314 | ||
605be8af | 315 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
6b61353c KH |
316 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
317 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 318 | (window) |
7ab12479 JB |
319 | Lisp_Object window; |
320 | { | |
321 | struct window *w = decode_window (window); | |
53bb6b99 | 322 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
323 | } |
324 | ||
325 | ||
7ab12479 | 326 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 327 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 328 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
329 | Return nil if that position is scrolled vertically out of view. |
330 | If a character is only partially visible, nil is returned, unless the | |
331 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 332 | If POS is only out of view because of horizontal scrolling, return non-nil. |
0cc1039f KS |
333 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
334 | ||
335 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5b1ba1e3 KS |
336 | return value is a list (X Y PARTIAL) where X and Y are the pixel coordinates |
337 | relative to the top left corner of the window. PARTIAL is nil if the character | |
338 | after POS is fully visible; otherwise it is a cons (RTOP . RBOT) where RTOP | |
339 | and RBOT are the number of pixels invisible at the top and bottom of the row. */) | |
fdb82f93 | 340 | (pos, window, partially) |
5cdb3cf3 | 341 | Lisp_Object pos, window, partially; |
7ab12479 JB |
342 | { |
343 | register struct window *w; | |
7ab12479 JB |
344 | register int posint; |
345 | register struct buffer *buf; | |
9a132b1f | 346 | struct text_pos top; |
0cc1039f | 347 | Lisp_Object in_window = Qnil; |
e56263e5 | 348 | int rtop, rbot, fully_p = 1; |
0cc1039f | 349 | int x, y; |
7ab12479 | 350 | |
f28b75a9 MB |
351 | w = decode_window (window); |
352 | buf = XBUFFER (w->buffer); | |
353 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
354 | ||
355 | if (!NILP (pos)) | |
7ab12479 | 356 | { |
b7826503 | 357 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
358 | posint = XINT (pos); |
359 | } | |
f28b75a9 MB |
360 | else if (w == XWINDOW (selected_window)) |
361 | posint = PT; | |
362 | else | |
363 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 364 | |
0cc1039f KS |
365 | /* If position is above window start or outside buffer boundaries, |
366 | or if window start is out of range, position is not visible. */ | |
367 | if (posint >= CHARPOS (top) | |
368 | && posint <= BUF_ZV (buf) | |
369 | && CHARPOS (top) >= BUF_BEGV (buf) | |
370 | && CHARPOS (top) <= BUF_ZV (buf) | |
e56263e5 KS |
371 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, NILP (partially)) |
372 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
0cc1039f KS |
373 | in_window = Qt; |
374 | ||
375 | if (!NILP (in_window) && !NILP (partially)) | |
376 | in_window = Fcons (make_number (x), | |
377 | Fcons (make_number (y), | |
5b1ba1e3 KS |
378 | Fcons ((fully_p ? Qnil |
379 | : Fcons (make_number (rtop), | |
380 | make_number (rbot))), | |
381 | Qnil))); | |
9a132b1f | 382 | return in_window; |
7ab12479 | 383 | } |
53bb6b99 | 384 | |
7ab12479 JB |
385 | \f |
386 | static struct window * | |
387 | decode_window (window) | |
388 | register Lisp_Object window; | |
389 | { | |
265a9e55 | 390 | if (NILP (window)) |
7ab12479 JB |
391 | return XWINDOW (selected_window); |
392 | ||
b7826503 | 393 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
394 | return XWINDOW (window); |
395 | } | |
396 | ||
6b61353c KH |
397 | static struct window * |
398 | decode_any_window (window) | |
399 | register Lisp_Object window; | |
400 | { | |
401 | if (NILP (window)) | |
402 | return XWINDOW (selected_window); | |
403 | ||
404 | CHECK_WINDOW (window); | |
405 | return XWINDOW (window); | |
406 | } | |
407 | ||
7ab12479 | 408 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
409 | doc: /* Return the buffer that WINDOW is displaying. |
410 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 411 | (window) |
7ab12479 JB |
412 | Lisp_Object window; |
413 | { | |
414 | return decode_window (window)->buffer; | |
415 | } | |
416 | ||
417 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
418 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
419 | (window) | |
7ab12479 JB |
420 | Lisp_Object window; |
421 | { | |
6b61353c | 422 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
423 | } |
424 | ||
425 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
426 | doc: /* Return the number of display columns in WINDOW. |
427 | This is the width that is usable columns available for text in WINDOW. | |
428 | If you want to find out how many columns WINDOW takes up, | |
429 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
430 | (window) | |
7ab12479 JB |
431 | Lisp_Object window; |
432 | { | |
6b61353c | 433 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
434 | } |
435 | ||
436 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
437 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
438 | (window) | |
7ab12479 JB |
439 | Lisp_Object window; |
440 | { | |
441 | return decode_window (window)->hscroll; | |
442 | } | |
443 | ||
444 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 445 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 446 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
447 | |
448 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
449 | window so that the location of point becomes invisible. */) | |
fdb82f93 | 450 | (window, ncol) |
ea68264b | 451 | Lisp_Object window, ncol; |
7ab12479 | 452 | { |
ea68264b GM |
453 | struct window *w = decode_window (window); |
454 | int hscroll; | |
7ab12479 | 455 | |
b7826503 | 456 | CHECK_NUMBER (ncol); |
ea68264b | 457 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 458 | |
ea68264b GM |
459 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
460 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 461 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 462 | |
c67fa410 | 463 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
464 | return ncol; |
465 | } | |
466 | ||
190eb263 RS |
467 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
468 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
469 | doc: /* Return WINDOW's redisplay end trigger value. |
470 | See `set-window-redisplay-end-trigger' for more information. */) | |
471 | (window) | |
190eb263 RS |
472 | Lisp_Object window; |
473 | { | |
474 | return decode_window (window)->redisplay_end_trigger; | |
475 | } | |
476 | ||
477 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
478 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
479 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
480 | VALUE should be a buffer position (typically a marker) or nil. | |
481 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
482 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
483 | with two arguments: WINDOW, and the end trigger value. | |
484 | Afterwards the end-trigger value is reset to nil. */) | |
485 | (window, value) | |
190eb263 RS |
486 | register Lisp_Object window, value; |
487 | { | |
488 | register struct window *w; | |
489 | ||
490 | w = decode_window (window); | |
491 | w->redisplay_end_trigger = value; | |
492 | return value; | |
493 | } | |
494 | ||
7ab12479 | 495 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
496 | doc: /* Return a list of the edge coordinates of WINDOW. |
497 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
498 | RIGHT is one more than the rightmost column occupied by WINDOW, |
499 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
500 | The edges include the space used by the window's scroll bar, | |
501 | display margins, fringes, header line, and mode line, if it has them. | |
502 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 503 | (window) |
7ab12479 JB |
504 | Lisp_Object window; |
505 | { | |
6b61353c | 506 | register struct window *w = decode_any_window (window); |
7ab12479 | 507 | |
949cf20f KS |
508 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
509 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
510 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
511 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
512 | Qnil)))); | |
7ab12479 JB |
513 | } |
514 | ||
c99a9eb3 RS |
515 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
516 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
517 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
518 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
519 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
520 | The pixel edges include the space used by the window's scroll bar, | |
521 | display margins, fringes, header line, and mode line, if it has them. | |
522 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
523 | (window) | |
524 | Lisp_Object window; | |
525 | { | |
6b61353c | 526 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
527 | |
528 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
529 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
530 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
531 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
532 | Qnil)))); | |
533 | } | |
534 | ||
535 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
536 | doc: /* Return a list of the edge coordinates of WINDOW. | |
537 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
538 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
539 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
540 | The inside edges do not include the space used by the window's scroll bar, | |
541 | display margins, fringes, header line, and/or mode line. */) | |
542 | (window) | |
543 | Lisp_Object window; | |
544 | { | |
6b61353c | 545 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
546 | |
547 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
548 | + WINDOW_LEFT_MARGIN_COLS (w) | |
549 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
550 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
551 | + WINDOW_HEADER_LINE_LINES (w)), | |
552 | make_number (WINDOW_RIGHT_EDGE_COL (w) | |
553 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
554 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
555 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
556 | - WINDOW_MODE_LINE_LINES (w))); | |
557 | } | |
558 | ||
559 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 560 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
561 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
562 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
563 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
564 | The inside edges do not include the space used by the window's scroll bar, | |
565 | display margins, fringes, header line, and/or mode line. */) | |
566 | (window) | |
567 | Lisp_Object window; | |
568 | { | |
6b61353c | 569 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
570 | |
571 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
572 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
573 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
574 | make_number (WINDOW_TOP_EDGE_Y (w) | |
575 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
576 | make_number (WINDOW_RIGHT_EDGE_X (w) | |
577 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
578 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
579 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
580 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
581 | } | |
582 | ||
fbad6f9a | 583 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 584 | If it is not, return ON_NOTHING; |
d5783c40 JB |
585 | if it is in the window's text area, |
586 | set *x and *y to its location relative to the upper left corner | |
587 | of the window, and | |
341f3858 KS |
588 | return ON_TEXT; |
589 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 590 | if it is on the border between the window and its right sibling, |
341f3858 | 591 | return ON_VERTICAL_BORDER. |
6487f669 RS |
592 | if it is on a scroll bar, |
593 | return ON_SCROLL_BAR. | |
341f3858 | 594 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 595 | if it is in left or right fringe of the window, |
341f3858 KS |
596 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
597 | to window-relative coordinates; | |
49b996e7 | 598 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
599 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
600 | to window-relative coordinates. | |
5500c422 GM |
601 | |
602 | X and Y are frame relative pixel coordinates. */ | |
603 | ||
7442878f | 604 | static enum window_part |
d5783c40 JB |
605 | coordinates_in_window (w, x, y) |
606 | register struct window *w; | |
607 | register int *x, *y; | |
608 | { | |
b0228ace GM |
609 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
610 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 611 | enum window_part part; |
949cf20f KS |
612 | int ux = FRAME_COLUMN_WIDTH (f); |
613 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
614 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
615 | /* The width of the area where the vertical line can be dragged. |
616 | (Between mode lines for instance. */ | |
617 | int grabbable_width = ux; | |
949cf20f | 618 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 619 | |
466539bc EZ |
620 | /* In what's below, we subtract 1 when computing right_x because we |
621 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
622 | if (w->pseudo_window_p) |
623 | { | |
624 | left_x = 0; | |
949cf20f KS |
625 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
626 | top_y = WINDOW_TOP_EDGE_Y (w); | |
627 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
628 | } |
629 | else | |
630 | { | |
949cf20f KS |
631 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
632 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
633 | top_y = WINDOW_TOP_EDGE_Y (w); | |
634 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 635 | } |
37962e60 | 636 | |
949cf20f KS |
637 | /* Outside any interesting row? */ |
638 | if (*y < top_y || *y >= bottom_y) | |
639 | return ON_NOTHING; | |
640 | ||
1cb794ba GM |
641 | /* On the mode line or header line? If it's near the start of |
642 | the mode or header line of window that's has a horizontal | |
643 | sibling, say it's on the vertical line. That's to be able | |
644 | to resize windows horizontally in case we're using toolkit | |
645 | scroll bars. */ | |
b0228ace | 646 | |
1cb794ba | 647 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 648 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 649 | { |
949cf20f KS |
650 | part = ON_MODE_LINE; |
651 | ||
652 | header_vertical_border_check: | |
b0228ace GM |
653 | /* We're somewhere on the mode line. We consider the place |
654 | between mode lines of horizontally adjacent mode lines | |
655 | as the vertical border. If scroll bars on the left, | |
656 | return the right window. */ | |
949cf20f KS |
657 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
658 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 659 | { |
949cf20f KS |
660 | if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width) |
661 | return ON_VERTICAL_BORDER; | |
b0228ace | 662 | } |
79fd290e | 663 | else |
b0228ace | 664 | { |
949cf20f KS |
665 | if (abs (*x - x1) < grabbable_width) |
666 | return ON_VERTICAL_BORDER; | |
b0228ace | 667 | } |
949cf20f | 668 | |
cb639b8f KS |
669 | if (*x < x0 || *x >= x1) |
670 | return ON_NOTHING; | |
671 | ||
a5303820 KS |
672 | /* Convert X and Y to window relative coordinates. |
673 | Mode line starts at left edge of window. */ | |
674 | *x -= x0; | |
675 | *y -= top_y; | |
949cf20f | 676 | return part; |
b0228ace | 677 | } |
949cf20f KS |
678 | |
679 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 680 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 681 | { |
949cf20f KS |
682 | part = ON_HEADER_LINE; |
683 | goto header_vertical_border_check; | |
1cb794ba | 684 | } |
949cf20f | 685 | |
cb639b8f KS |
686 | if (*x < x0 || *x >= x1) |
687 | return ON_NOTHING; | |
688 | ||
949cf20f KS |
689 | /* Outside any interesting column? */ |
690 | if (*x < left_x || *x > right_x) | |
6487f669 | 691 | return ON_SCROLL_BAR; |
949cf20f KS |
692 | |
693 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
694 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 695 | |
949cf20f KS |
696 | text_left = window_box_left (w, TEXT_AREA); |
697 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
698 | ||
699 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 700 | { |
447e9da0 | 701 | if (!w->pseudo_window_p |
949cf20f | 702 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 703 | && !WINDOW_RIGHTMOST_P (w) |
949cf20f KS |
704 | && (abs (*x - right_x) < grabbable_width)) |
705 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 706 | } |
447e9da0 GM |
707 | else |
708 | { | |
709 | /* Need to say "*x > right_x" rather than >=, since on character | |
710 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
711 | if (!w->pseudo_window_p |
712 | && !WINDOW_RIGHTMOST_P (w) | |
713 | && *x > right_x - ux) | |
b0228ace GM |
714 | { |
715 | /* On the border on the right side of the window? Assume that | |
716 | this area begins at RIGHT_X minus a canonical char width. */ | |
949cf20f | 717 | return ON_VERTICAL_BORDER; |
b0228ace | 718 | } |
447e9da0 | 719 | } |
b0228ace | 720 | |
949cf20f KS |
721 | if (*x < text_left) |
722 | { | |
723 | if (lmargin_width > 0 | |
724 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
725 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
726 | : (*x < left_x + lmargin_width))) | |
a5303820 | 727 | { |
6b61353c | 728 | *x -= left_x; |
a5303820 KS |
729 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
730 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
731 | *y -= top_y; | |
732 | return ON_LEFT_MARGIN; | |
733 | } | |
949cf20f KS |
734 | |
735 | /* Convert X and Y to window-relative pixel coordinates. */ | |
736 | *x -= left_x; | |
737 | *y -= top_y; | |
738 | return ON_LEFT_FRINGE; | |
739 | } | |
740 | ||
741 | if (*x >= text_right) | |
742 | { | |
743 | if (rmargin_width > 0 | |
744 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
745 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
746 | : (*x >= right_x - rmargin_width))) | |
a5303820 KS |
747 | { |
748 | *x -= right_x; | |
749 | if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
750 | *x -= WINDOW_RIGHT_FRINGE_WIDTH (w); | |
751 | *y -= top_y; | |
752 | return ON_RIGHT_MARGIN; | |
753 | } | |
949cf20f KS |
754 | |
755 | /* Convert X and Y to window-relative pixel coordinates. */ | |
756 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
757 | *y -= top_y; | |
758 | return ON_RIGHT_FRINGE; | |
759 | } | |
760 | ||
761 | /* Everything special ruled out - must be on text area */ | |
762 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
763 | *y -= top_y; | |
764 | return ON_TEXT; | |
d5783c40 JB |
765 | } |
766 | ||
b0228ace | 767 | |
d5783c40 | 768 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
769 | Scoordinates_in_window_p, 2, 2, 0, |
770 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
771 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
772 | measured in characters from the upper-left corner of the frame. | |
773 | \(0 . 0) denotes the character in the upper left corner of the | |
774 | frame. | |
775 | If COORDINATES are in the text portion of WINDOW, | |
776 | the coordinates relative to the window are returned. | |
777 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
778 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
779 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
780 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 781 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
782 | `vertical-line' is returned. |
783 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
784 | or `right-margin' is returned. */) | |
fdb82f93 | 785 | (coordinates, window) |
d5783c40 JB |
786 | register Lisp_Object coordinates, window; |
787 | { | |
5500c422 GM |
788 | struct window *w; |
789 | struct frame *f; | |
d5783c40 | 790 | int x, y; |
5500c422 | 791 | Lisp_Object lx, ly; |
d5783c40 | 792 | |
6b61353c | 793 | CHECK_WINDOW (window); |
5500c422 GM |
794 | w = XWINDOW (window); |
795 | f = XFRAME (w->frame); | |
b7826503 | 796 | CHECK_CONS (coordinates); |
5500c422 GM |
797 | lx = Fcar (coordinates); |
798 | ly = Fcdr (coordinates); | |
b7826503 PJ |
799 | CHECK_NUMBER_OR_FLOAT (lx); |
800 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
801 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
802 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
803 | |
804 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 805 | { |
7442878f | 806 | case ON_NOTHING: |
d5783c40 JB |
807 | return Qnil; |
808 | ||
7442878f GM |
809 | case ON_TEXT: |
810 | /* X and Y are now window relative pixel coordinates. Convert | |
811 | them to canonical char units before returning them. */ | |
949cf20f KS |
812 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
813 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 814 | |
7442878f | 815 | case ON_MODE_LINE: |
d5783c40 | 816 | return Qmode_line; |
37962e60 | 817 | |
7442878f | 818 | case ON_VERTICAL_BORDER: |
e5d77022 | 819 | return Qvertical_line; |
d5783c40 | 820 | |
7442878f | 821 | case ON_HEADER_LINE: |
045dee35 | 822 | return Qheader_line; |
5500c422 | 823 | |
7442878f GM |
824 | case ON_LEFT_FRINGE: |
825 | return Qleft_fringe; | |
177c0ea7 | 826 | |
7442878f GM |
827 | case ON_RIGHT_FRINGE: |
828 | return Qright_fringe; | |
fbad6f9a | 829 | |
49b996e7 GM |
830 | case ON_LEFT_MARGIN: |
831 | return Qleft_margin; | |
177c0ea7 | 832 | |
49b996e7 GM |
833 | case ON_RIGHT_MARGIN: |
834 | return Qright_margin; | |
835 | ||
6487f669 RS |
836 | case ON_SCROLL_BAR: |
837 | /* Historically we are supposed to return nil in this case. */ | |
838 | return Qnil; | |
839 | ||
d5783c40 JB |
840 | default: |
841 | abort (); | |
842 | } | |
843 | } | |
844 | ||
67492200 GM |
845 | |
846 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
847 | Check if window W contains coordinates specified by USER_DATA which |
848 | is actually a pointer to a struct check_window_data CW. | |
849 | ||
850 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
851 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 852 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
853 | zero from this function to stop iterating over windows. */ |
854 | ||
855 | struct check_window_data | |
856 | { | |
857 | Lisp_Object *window; | |
341f3858 KS |
858 | int *x, *y; |
859 | enum window_part *part; | |
f95464e4 | 860 | }; |
67492200 GM |
861 | |
862 | static int | |
f95464e4 | 863 | check_window_containing (w, user_data) |
67492200 | 864 | struct window *w; |
f95464e4 | 865 | void *user_data; |
67492200 | 866 | { |
f95464e4 | 867 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
868 | enum window_part found; |
869 | int continue_p = 1; | |
67492200 | 870 | |
f95464e4 | 871 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 872 | if (found != ON_NOTHING) |
67492200 | 873 | { |
341f3858 | 874 | *cw->part = found; |
f95464e4 | 875 | XSETWINDOW (*cw->window, w); |
7442878f | 876 | continue_p = 0; |
67492200 | 877 | } |
177c0ea7 | 878 | |
7442878f | 879 | return continue_p; |
67492200 GM |
880 | } |
881 | ||
882 | ||
5500c422 | 883 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
884 | return it as a Lisp_Object. |
885 | ||
886 | If X, Y is on one of the window's special `window_part' elements, | |
887 | set *PART to the id of that element, and return X and Y converted | |
888 | to window relative coordinates in WX and WY. | |
889 | ||
341f3858 | 890 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
891 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
892 | ||
893 | This function was previously implemented with a loop cycling over | |
894 | windows with Fnext_window, and starting with the frame's selected | |
895 | window. It turned out that this doesn't work with an | |
896 | implementation of next_window using Vwindow_list, because | |
897 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
898 | tree of F when this function is called asynchronously from | |
899 | note_mouse_highlight. The original loop didn't terminate in this | |
900 | case. */ | |
5500c422 | 901 | |
7ab12479 | 902 | Lisp_Object |
949cf20f | 903 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 904 | struct frame *f; |
7ab12479 | 905 | int x, y; |
341f3858 | 906 | enum window_part *part; |
949cf20f | 907 | int *wx, *wy; |
9ea173e8 | 908 | int tool_bar_p; |
7ab12479 | 909 | { |
67492200 | 910 | Lisp_Object window; |
f95464e4 | 911 | struct check_window_data cw; |
341f3858 KS |
912 | enum window_part dummy; |
913 | ||
914 | if (part == 0) | |
915 | part = &dummy; | |
5500c422 | 916 | |
67492200 | 917 | window = Qnil; |
f95464e4 GM |
918 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
919 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 920 | |
67492200 GM |
921 | /* If not found above, see if it's in the tool bar window, if a tool |
922 | bar exists. */ | |
923 | if (NILP (window) | |
924 | && tool_bar_p | |
925 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 926 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
927 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
928 | != ON_NOTHING)) | |
5500c422 | 929 | { |
341f3858 | 930 | *part = ON_TEXT; |
67492200 | 931 | window = f->tool_bar_window; |
5500c422 | 932 | } |
37962e60 | 933 | |
949cf20f KS |
934 | if (wx) *wx = x; |
935 | if (wy) *wy = y; | |
936 | ||
67492200 | 937 | return window; |
7ab12479 JB |
938 | } |
939 | ||
ab17c3f2 | 940 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
941 | doc: /* Return window containing coordinates X and Y on FRAME. |
942 | If omitted, FRAME defaults to the currently selected frame. | |
943 | The top left corner of the frame is considered to be row 0, | |
944 | column 0. */) | |
945 | (x, y, frame) | |
946 | Lisp_Object x, y, frame; | |
7ab12479 | 947 | { |
5500c422 | 948 | struct frame *f; |
7ab12479 | 949 | |
44fa5b1e | 950 | if (NILP (frame)) |
1ae1a37d | 951 | frame = selected_frame; |
b7826503 | 952 | CHECK_LIVE_FRAME (frame); |
5500c422 | 953 | f = XFRAME (frame); |
7ab12479 | 954 | |
5500c422 | 955 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
956 | CHECK_NUMBER_OR_FLOAT (x); |
957 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 958 | |
177c0ea7 | 959 | return window_from_coordinates (f, |
2c77cf3b RS |
960 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
961 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
962 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
963 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 964 | 0, 0, 0, 0); |
7ab12479 JB |
965 | } |
966 | ||
967 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
968 | doc: /* Return current value of point in WINDOW. |
969 | For a nonselected window, this is the value point would have | |
970 | if that window were selected. | |
971 | ||
972 | Note that, when WINDOW is the selected window and its buffer | |
973 | is also currently selected, the value returned is the same as (point). | |
974 | It would be more strictly correct to return the `top-level' value | |
975 | of point, outside of any save-excursion forms. | |
976 | But that is hard to define. */) | |
977 | (window) | |
7ab12479 JB |
978 | Lisp_Object window; |
979 | { | |
980 | register struct window *w = decode_window (window); | |
981 | ||
982 | if (w == XWINDOW (selected_window) | |
983 | && current_buffer == XBUFFER (w->buffer)) | |
984 | return Fpoint (); | |
985 | return Fmarker_position (w->pointm); | |
986 | } | |
987 | ||
988 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
989 | doc: /* Return position at which display currently starts in WINDOW. |
990 | This is updated by redisplay or by calling `set-window-start'. */) | |
991 | (window) | |
7ab12479 JB |
992 | Lisp_Object window; |
993 | { | |
994 | return Fmarker_position (decode_window (window)->start); | |
995 | } | |
996 | ||
8646118f RS |
997 | /* This is text temporarily removed from the doc string below. |
998 | ||
fdb82f93 PJ |
999 | This function returns nil if the position is not currently known. |
1000 | That happens when redisplay is preempted and doesn't finish. | |
1001 | If in that case you want to compute where the end of the window would | |
1002 | have been if redisplay had finished, do this: | |
1003 | (save-excursion | |
1004 | (goto-char (window-start window)) | |
1005 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1006 | (point))") */ |
1007 | ||
478292ed | 1008 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
1009 | doc: /* Return position at which display currently ends in WINDOW. |
1010 | This is updated by redisplay, when it runs to completion. | |
1011 | Simply changing the buffer text or setting `window-start' | |
1012 | does not update this value. | |
a0a37a6f LT |
1013 | Return nil if there is no recorded value. \(This can happen if the |
1014 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1015 | If UPDATE is non-nil, compute the up-to-date position |
1016 | if it isn't already recorded. */) | |
1017 | (window, update) | |
478292ed | 1018 | Lisp_Object window, update; |
7ab12479 JB |
1019 | { |
1020 | Lisp_Object value; | |
1021 | struct window *w = decode_window (window); | |
5a41ab94 RS |
1022 | Lisp_Object buf; |
1023 | ||
1024 | buf = w->buffer; | |
b7826503 | 1025 | CHECK_BUFFER (buf); |
5a41ab94 | 1026 | |
8646118f | 1027 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1028 | /* If we don't know the end position, return nil. |
1029 | The user can compute it with vertical-motion if he wants to. | |
1030 | It would be nicer to do it automatically, | |
1031 | but that's so slow that it would probably bother people. */ | |
1032 | if (NILP (w->window_end_valid)) | |
1033 | return Qnil; | |
8646118f | 1034 | #endif |
7250968e | 1035 | |
478292ed RS |
1036 | if (! NILP (update) |
1037 | && ! (! NILP (w->window_end_valid) | |
1038 | && XFASTINT (w->last_modified) >= MODIFF)) | |
1039 | { | |
cbc099e5 GM |
1040 | struct text_pos startp; |
1041 | struct it it; | |
99593a9d | 1042 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
1043 | |
1044 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1045 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1046 | `-l' containing a call to `rmail' with subsequent other |
1047 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1048 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1049 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1050 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1051 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1052 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1053 | else |
cbc099e5 GM |
1054 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1055 | ||
1056 | /* Cannot use Fvertical_motion because that function doesn't | |
1057 | cope with variable-height lines. */ | |
99593a9d GM |
1058 | if (b != current_buffer) |
1059 | { | |
1060 | old_buffer = current_buffer; | |
1061 | set_buffer_internal (b); | |
1062 | } | |
177c0ea7 | 1063 | |
cbc099e5 GM |
1064 | start_display (&it, w, startp); |
1065 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1066 | if (it.current_y < it.last_visible_y) |
1067 | move_it_past_eol (&it); | |
cbc099e5 | 1068 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1069 | |
99593a9d GM |
1070 | if (old_buffer) |
1071 | set_buffer_internal (old_buffer); | |
478292ed RS |
1072 | } |
1073 | else | |
cbc099e5 | 1074 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1075 | |
1076 | return value; | |
1077 | } | |
1078 | ||
1079 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1080 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1081 | Return POS. */) | |
fdb82f93 | 1082 | (window, pos) |
7ab12479 JB |
1083 | Lisp_Object window, pos; |
1084 | { | |
1085 | register struct window *w = decode_window (window); | |
1086 | ||
b7826503 | 1087 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1088 | if (w == XWINDOW (selected_window) |
1089 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1090 | Fgoto_char (pos); |
1091 | else | |
1092 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1093 | |
0685cb3c GM |
1094 | /* We have to make sure that redisplay updates the window to show |
1095 | the new value of point. */ | |
1096 | if (!EQ (window, selected_window)) | |
799417bd | 1097 | ++windows_or_buffers_changed; |
177c0ea7 | 1098 | |
7ab12479 JB |
1099 | return pos; |
1100 | } | |
1101 | ||
1102 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1103 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1104 | Return POS. |
fdb82f93 PJ |
1105 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1106 | from overriding motion of point in order to display at this exact start. */) | |
1107 | (window, pos, noforce) | |
7ab12479 JB |
1108 | Lisp_Object window, pos, noforce; |
1109 | { | |
1110 | register struct window *w = decode_window (window); | |
1111 | ||
b7826503 | 1112 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1113 | set_marker_restricted (w->start, pos, w->buffer); |
1114 | /* this is not right, but much easier than doing what is right. */ | |
1115 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1116 | if (NILP (noforce)) |
7ab12479 JB |
1117 | w->force_start = Qt; |
1118 | w->update_mode_line = Qt; | |
d834a2e9 | 1119 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1120 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1121 | if (!EQ (window, selected_window)) |
1122 | windows_or_buffers_changed++; | |
ce7fae7d | 1123 | |
7ab12479 JB |
1124 | return pos; |
1125 | } | |
1126 | ||
1127 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1128 | 1, 1, 0, | |
fdb82f93 PJ |
1129 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1130 | See also `set-window-dedicated-p'. */) | |
1131 | (window) | |
7ab12479 JB |
1132 | Lisp_Object window; |
1133 | { | |
1134 | return decode_window (window)->dedicated; | |
1135 | } | |
1136 | ||
d207b766 RS |
1137 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1138 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1139 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1140 | If it is dedicated, Emacs will not automatically change | |
1141 | which buffer appears in it. | |
1142 | The second argument is the new value for the dedication flag; | |
1143 | non-nil means yes. */) | |
1144 | (window, arg) | |
1145 | Lisp_Object window, arg; | |
7ab12479 JB |
1146 | { |
1147 | register struct window *w = decode_window (window); | |
1148 | ||
2d0834cc | 1149 | w->dedicated = arg; |
7ab12479 JB |
1150 | |
1151 | return w->dedicated; | |
1152 | } | |
1153 | ||
1154 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1155 | 0, 1, 0, | |
fdb82f93 PJ |
1156 | doc: /* Return the display-table that WINDOW is using. */) |
1157 | (window) | |
7ab12479 JB |
1158 | Lisp_Object window; |
1159 | { | |
1160 | return decode_window (window)->display_table; | |
1161 | } | |
1162 | ||
5500c422 GM |
1163 | /* Get the display table for use on window W. This is either W's |
1164 | display table or W's buffer's display table. Ignore the specified | |
1165 | tables if they are not valid; if no valid table is specified, | |
1166 | return 0. */ | |
7ab12479 | 1167 | |
319315f1 | 1168 | struct Lisp_Char_Table * |
7ab12479 JB |
1169 | window_display_table (w) |
1170 | struct window *w; | |
1171 | { | |
c756cdbe GM |
1172 | struct Lisp_Char_Table *dp = NULL; |
1173 | ||
1174 | if (DISP_TABLE_P (w->display_table)) | |
1175 | dp = XCHAR_TABLE (w->display_table); | |
1176 | else if (BUFFERP (w->buffer)) | |
1177 | { | |
1178 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1179 | |
c756cdbe GM |
1180 | if (DISP_TABLE_P (b->display_table)) |
1181 | dp = XCHAR_TABLE (b->display_table); | |
1182 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1183 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1184 | } | |
171d003c | 1185 | |
c756cdbe | 1186 | return dp; |
7ab12479 JB |
1187 | } |
1188 | ||
3a2712f9 | 1189 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1190 | doc: /* Set WINDOW's display-table to TABLE. */) |
1191 | (window, table) | |
7ab12479 JB |
1192 | register Lisp_Object window, table; |
1193 | { | |
1194 | register struct window *w; | |
7ab12479 JB |
1195 | |
1196 | w = decode_window (window); | |
1197 | w->display_table = table; | |
1198 | return table; | |
1199 | } | |
1200 | \f | |
1201 | /* Record info on buffer window w is displaying | |
1202 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1203 | static void |
7ab12479 JB |
1204 | unshow_buffer (w) |
1205 | register struct window *w; | |
1206 | { | |
12cae7c0 | 1207 | Lisp_Object buf; |
b73ea88e | 1208 | struct buffer *b; |
7ab12479 | 1209 | |
12cae7c0 | 1210 | buf = w->buffer; |
b73ea88e RS |
1211 | b = XBUFFER (buf); |
1212 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1213 | abort (); |
1214 | ||
573f41ab | 1215 | #if 0 |
7ab12479 JB |
1216 | if (w == XWINDOW (selected_window) |
1217 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1218 | /* Do this except when the selected window's buffer | |
1219 | is being removed from some other window. */ | |
573f41ab RS |
1220 | #endif |
1221 | /* last_window_start records the start position that this buffer | |
1222 | had in the last window to be disconnected from it. | |
1223 | Now that this statement is unconditional, | |
1224 | it is possible for the buffer to be displayed in the | |
1225 | selected window, while last_window_start reflects another | |
1226 | window which was recently showing the same buffer. | |
1227 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1228 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1229 | |
1230 | /* Point in the selected window's buffer | |
1231 | is actually stored in that buffer, and the window's pointm isn't used. | |
1232 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1233 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1234 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1235 | && !(WINDOWP (b->last_selected_window) |
1236 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1237 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1238 | temp_set_point_both (b, |
1239 | clip_to_bounds (BUF_BEGV (b), | |
1240 | XMARKER (w->pointm)->charpos, | |
1241 | BUF_ZV (b)), | |
1242 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1243 | marker_byte_position (w->pointm), | |
1244 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1245 | |
8801a864 KR |
1246 | if (WINDOWP (b->last_selected_window) |
1247 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1248 | b->last_selected_window = Qnil; |
7ab12479 JB |
1249 | } |
1250 | ||
1251 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1252 | static void |
7ab12479 JB |
1253 | replace_window (old, replacement) |
1254 | Lisp_Object old, replacement; | |
1255 | { | |
1256 | register Lisp_Object tem; | |
1257 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1258 | ||
44fa5b1e JB |
1259 | /* If OLD is its frame's root_window, then replacement is the new |
1260 | root_window for that frame. */ | |
7ab12479 | 1261 | |
7f4161e0 | 1262 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1263 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1264 | |
949cf20f KS |
1265 | p->left_col = o->left_col; |
1266 | p->top_line = o->top_line; | |
1267 | p->total_cols = o->total_cols; | |
1268 | p->total_lines = o->total_lines; | |
5500c422 GM |
1269 | p->desired_matrix = p->current_matrix = 0; |
1270 | p->vscroll = 0; | |
1271 | bzero (&p->cursor, sizeof (p->cursor)); | |
1272 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1273 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1274 | p->phys_cursor_type = -1; | |
4b26579e | 1275 | p->phys_cursor_width = -1; |
5500c422 GM |
1276 | p->must_be_updated_p = 0; |
1277 | p->pseudo_window_p = 0; | |
1278 | XSETFASTINT (p->window_end_vpos, 0); | |
1279 | XSETFASTINT (p->window_end_pos, 0); | |
1280 | p->window_end_valid = Qnil; | |
7bbb5782 | 1281 | p->frozen_window_start_p = 0; |
949cf20f | 1282 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1283 | |
1284 | p->next = tem = o->next; | |
265a9e55 | 1285 | if (!NILP (tem)) |
7ab12479 JB |
1286 | XWINDOW (tem)->prev = replacement; |
1287 | ||
1288 | p->prev = tem = o->prev; | |
265a9e55 | 1289 | if (!NILP (tem)) |
7ab12479 JB |
1290 | XWINDOW (tem)->next = replacement; |
1291 | ||
1292 | p->parent = tem = o->parent; | |
265a9e55 | 1293 | if (!NILP (tem)) |
7ab12479 JB |
1294 | { |
1295 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1296 | XWINDOW (tem)->vchild = replacement; | |
1297 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1298 | XWINDOW (tem)->hchild = replacement; | |
1299 | } | |
1300 | ||
1301 | /*** Here, if replacement is a vertical combination | |
1302 | and so is its new parent, we should make replacement's | |
1303 | children be children of that parent instead. ***/ | |
1304 | } | |
1305 | ||
1306 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1307 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1308 | (window) | |
7ab12479 | 1309 | register Lisp_Object window; |
543f5fb1 RS |
1310 | { |
1311 | delete_window (window); | |
1312 | ||
1313 | if (! NILP (Vwindow_configuration_change_hook) | |
1314 | && ! NILP (Vrun_hooks)) | |
1315 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1316 | ||
1317 | return Qnil; | |
1318 | } | |
1319 | ||
5e14b1fc | 1320 | void |
543f5fb1 RS |
1321 | delete_window (window) |
1322 | register Lisp_Object window; | |
7ab12479 JB |
1323 | { |
1324 | register Lisp_Object tem, parent, sib; | |
1325 | register struct window *p; | |
1326 | register struct window *par; | |
951f9df5 | 1327 | struct frame *f; |
7ab12479 | 1328 | |
605be8af JB |
1329 | /* Because this function is called by other C code on non-leaf |
1330 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1331 | so we can't decode_window here. */ | |
265a9e55 | 1332 | if (NILP (window)) |
7ab12479 JB |
1333 | window = selected_window; |
1334 | else | |
b7826503 | 1335 | CHECK_WINDOW (window); |
7ab12479 | 1336 | p = XWINDOW (window); |
605be8af JB |
1337 | |
1338 | /* It's okay to delete an already-deleted window. */ | |
1339 | if (NILP (p->buffer) | |
1340 | && NILP (p->hchild) | |
1341 | && NILP (p->vchild)) | |
296b535c | 1342 | return; |
605be8af | 1343 | |
7ab12479 | 1344 | parent = p->parent; |
265a9e55 | 1345 | if (NILP (parent)) |
7ab12479 JB |
1346 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1347 | par = XWINDOW (parent); | |
1348 | ||
1349 | windows_or_buffers_changed++; | |
67492200 | 1350 | Vwindow_list = Qnil; |
951f9df5 GM |
1351 | f = XFRAME (WINDOW_FRAME (p)); |
1352 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1353 | |
605be8af JB |
1354 | /* Are we trying to delete any frame's selected window? */ |
1355 | { | |
192c3131 | 1356 | Lisp_Object swindow, pwindow; |
605be8af | 1357 | |
0def0403 RS |
1358 | /* See if the frame's selected window is either WINDOW |
1359 | or any subwindow of it, by finding all that window's parents | |
1360 | and comparing each one with WINDOW. */ | |
192c3131 | 1361 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1362 | |
192c3131 | 1363 | while (1) |
0def0403 | 1364 | { |
192c3131 RS |
1365 | pwindow = swindow; |
1366 | while (!NILP (pwindow)) | |
1367 | { | |
1368 | if (EQ (window, pwindow)) | |
1369 | break; | |
1370 | pwindow = XWINDOW (pwindow)->parent; | |
1371 | } | |
1372 | ||
1373 | /* If the window being deleted is not a parent of SWINDOW, | |
1374 | then SWINDOW is ok as the new selected window. */ | |
1375 | if (!EQ (window, pwindow)) | |
0def0403 | 1376 | break; |
192c3131 RS |
1377 | /* Otherwise, try another window for SWINDOW. */ |
1378 | swindow = Fnext_window (swindow, Qlambda, Qnil);; | |
1379 | ||
1380 | /* If we get back to the frame's selected window, | |
1381 | it means there was no acceptable alternative, | |
1382 | so we cannot delete. */ | |
1383 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1384 | error ("Cannot delete window"); | |
0def0403 RS |
1385 | } |
1386 | ||
192c3131 RS |
1387 | /* If we need to change SWINDOW, do it. */ |
1388 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1389 | { |
605be8af JB |
1390 | /* If we're about to delete the selected window on the |
1391 | selected frame, then we should use Fselect_window to select | |
1392 | the new window. On the other hand, if we're about to | |
1393 | delete the selected window on any other frame, we shouldn't do | |
1394 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1395 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1396 | Fselect_window (swindow, Qnil); |
605be8af | 1397 | else |
192c3131 | 1398 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1399 | } |
1400 | } | |
7ab12479 JB |
1401 | |
1402 | tem = p->buffer; | |
1403 | /* tem is null for dummy parent windows | |
1404 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1405 | if (!NILP (tem)) |
7ab12479 JB |
1406 | { |
1407 | unshow_buffer (p); | |
2d0834cc SM |
1408 | unchain_marker (XMARKER (p->pointm)); |
1409 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1410 | } |
1411 | ||
05e71564 GM |
1412 | /* Free window glyph matrices. It is sure that they are allocated |
1413 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1414 | events and other events that access glyph matrices are not | |
1415 | processed while we are changing them. */ | |
1416 | BLOCK_INPUT; | |
951f9df5 | 1417 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1418 | |
7ab12479 | 1419 | tem = p->next; |
265a9e55 | 1420 | if (!NILP (tem)) |
7ab12479 JB |
1421 | XWINDOW (tem)->prev = p->prev; |
1422 | ||
1423 | tem = p->prev; | |
265a9e55 | 1424 | if (!NILP (tem)) |
7ab12479 JB |
1425 | XWINDOW (tem)->next = p->next; |
1426 | ||
1427 | if (EQ (window, par->hchild)) | |
1428 | par->hchild = p->next; | |
1429 | if (EQ (window, par->vchild)) | |
1430 | par->vchild = p->next; | |
1431 | ||
1432 | /* Find one of our siblings to give our space to. */ | |
1433 | sib = p->prev; | |
265a9e55 | 1434 | if (NILP (sib)) |
7ab12479 JB |
1435 | { |
1436 | /* If p gives its space to its next sibling, that sibling needs | |
1437 | to have its top/left side pulled back to where p's is. | |
1438 | set_window_{height,width} will re-position the sibling's | |
1439 | children. */ | |
1440 | sib = p->next; | |
949cf20f KS |
1441 | XWINDOW (sib)->top_line = p->top_line; |
1442 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1443 | } |
1444 | ||
1445 | /* Stretch that sibling. */ | |
265a9e55 | 1446 | if (!NILP (par->vchild)) |
7ab12479 | 1447 | set_window_height (sib, |
949cf20f | 1448 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1449 | 1); |
265a9e55 | 1450 | if (!NILP (par->hchild)) |
7ab12479 | 1451 | set_window_width (sib, |
949cf20f | 1452 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1453 | 1); |
1454 | ||
1455 | /* If parent now has only one child, | |
1456 | put the child into the parent's place. */ | |
7ab12479 | 1457 | tem = par->hchild; |
265a9e55 | 1458 | if (NILP (tem)) |
7ab12479 | 1459 | tem = par->vchild; |
265a9e55 | 1460 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1461 | replace_window (parent, tem); |
605be8af JB |
1462 | |
1463 | /* Since we may be deleting combination windows, we must make sure that | |
1464 | not only p but all its children have been marked as deleted. */ | |
1465 | if (! NILP (p->hchild)) | |
1466 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1467 | else if (! NILP (p->vchild)) | |
1468 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1469 | ||
1470 | /* Mark this window as deleted. */ | |
1471 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1472 | |
1473 | /* Adjust glyph matrices. */ | |
951f9df5 | 1474 | adjust_glyphs (f); |
05e71564 | 1475 | UNBLOCK_INPUT; |
7ab12479 | 1476 | } |
67492200 GM |
1477 | |
1478 | ||
7ab12479 | 1479 | \f |
67492200 GM |
1480 | /*********************************************************************** |
1481 | Window List | |
1482 | ***********************************************************************/ | |
1483 | ||
f95464e4 GM |
1484 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1485 | pointer. This is a callback function for foreach_window, used in | |
1486 | function window_list. */ | |
67492200 GM |
1487 | |
1488 | static int | |
f95464e4 | 1489 | add_window_to_list (w, user_data) |
67492200 | 1490 | struct window *w; |
f95464e4 | 1491 | void *user_data; |
67492200 | 1492 | { |
f95464e4 | 1493 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1494 | Lisp_Object window; |
1495 | XSETWINDOW (window, w); | |
212116d6 | 1496 | *list = Fcons (window, *list); |
67492200 GM |
1497 | return 1; |
1498 | } | |
1499 | ||
1500 | ||
1501 | /* Return a list of all windows, for use by next_window. If | |
1502 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1503 | list, cache it in Vwindow_list, and return that. */ | |
1504 | ||
1505 | static Lisp_Object | |
1506 | window_list () | |
1507 | { | |
1508 | if (!CONSP (Vwindow_list)) | |
1509 | { | |
1510 | Lisp_Object tail; | |
212116d6 | 1511 | |
67492200 GM |
1512 | Vwindow_list = Qnil; |
1513 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1514 | { |
1515 | Lisp_Object args[2]; | |
1516 | ||
1517 | /* We are visiting windows in canonical order, and add | |
1518 | new windows at the front of args[1], which means we | |
1519 | have to reverse this list at the end. */ | |
1520 | args[1] = Qnil; | |
1521 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1522 | args[0] = Vwindow_list; | |
1523 | args[1] = Fnreverse (args[1]); | |
1524 | Vwindow_list = Fnconc (2, args); | |
1525 | } | |
67492200 | 1526 | } |
177c0ea7 | 1527 | |
67492200 GM |
1528 | return Vwindow_list; |
1529 | } | |
1530 | ||
1531 | ||
118ea242 GM |
1532 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1533 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1534 | |
118ea242 GM |
1535 | MINIBUF t means WINDOW may be minibuffer windows. |
1536 | `lambda' means WINDOW may not be a minibuffer window. | |
1537 | a window means a specific minibuffer window | |
67492200 | 1538 | |
118ea242 GM |
1539 | ALL_FRAMES t means search all frames, |
1540 | nil means search just current frame, | |
1541 | `visible' means search just visible frames, | |
1542 | 0 means search visible and iconified frames, | |
1543 | a window means search the frame that window belongs to, | |
1544 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1545 | |
1546 | static int | |
118ea242 GM |
1547 | candidate_window_p (window, owindow, minibuf, all_frames) |
1548 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1549 | { |
1550 | struct window *w = XWINDOW (window); | |
1551 | struct frame *f = XFRAME (w->frame); | |
1552 | int candidate_p = 1; | |
1553 | ||
1554 | if (!BUFFERP (w->buffer)) | |
1555 | candidate_p = 0; | |
1556 | else if (MINI_WINDOW_P (w) | |
1557 | && (EQ (minibuf, Qlambda) | |
1558 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1559 | { | |
1560 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1561 | If it is a window, consider only that one. */ | |
1562 | candidate_p = 0; | |
1563 | } | |
118ea242 GM |
1564 | else if (EQ (all_frames, Qt)) |
1565 | candidate_p = 1; | |
67492200 | 1566 | else if (NILP (all_frames)) |
118ea242 GM |
1567 | { |
1568 | xassert (WINDOWP (owindow)); | |
1569 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1570 | } | |
67492200 GM |
1571 | else if (EQ (all_frames, Qvisible)) |
1572 | { | |
1573 | FRAME_SAMPLE_VISIBILITY (f); | |
1574 | candidate_p = FRAME_VISIBLE_P (f); | |
1575 | } | |
1576 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1577 | { | |
1578 | FRAME_SAMPLE_VISIBILITY (f); | |
1579 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1580 | } | |
67492200 GM |
1581 | else if (WINDOWP (all_frames)) |
1582 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1583 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1584 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1585 | else if (FRAMEP (all_frames)) |
1586 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1587 | |
1588 | return candidate_p; | |
1589 | } | |
1590 | ||
1591 | ||
1592 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1593 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1594 | ALL_FRAMES. */ | |
1595 | ||
1596 | static void | |
1597 | decode_next_window_args (window, minibuf, all_frames) | |
1598 | Lisp_Object *window, *minibuf, *all_frames; | |
1599 | { | |
1600 | if (NILP (*window)) | |
1601 | *window = selected_window; | |
1602 | else | |
b7826503 | 1603 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1604 | |
67492200 GM |
1605 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1606 | does. */ | |
1607 | if (NILP (*minibuf)) | |
1608 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1609 | else if (!EQ (*minibuf, Qt)) | |
1610 | *minibuf = Qlambda; | |
177c0ea7 | 1611 | |
67492200 GM |
1612 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1613 | => count none of them, or a specific minibuffer window (the | |
1614 | active one) to count. */ | |
1615 | ||
1616 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1617 | if (NILP (*all_frames)) | |
1618 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1619 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1620 | : Qnil); | |
1621 | else if (EQ (*all_frames, Qvisible)) | |
1622 | ; | |
0f8fe9a2 | 1623 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1624 | ; |
1625 | else if (FRAMEP (*all_frames)) | |
1626 | ; | |
1627 | else if (!EQ (*all_frames, Qt)) | |
1628 | *all_frames = Qnil; | |
177c0ea7 | 1629 | |
67492200 GM |
1630 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1631 | search just current frame, `visible' meaning search just visible | |
1632 | frames, 0 meaning search visible and iconified frames, or a | |
1633 | window, meaning search the frame that window belongs to, or a | |
1634 | frame, meaning consider windows on that frame, only. */ | |
1635 | } | |
1636 | ||
1637 | ||
1638 | /* Return the next or previous window of WINDOW in canonical ordering | |
1639 | of windows. NEXT_P non-zero means return the next window. See the | |
1640 | documentation string of next-window for the meaning of MINIBUF and | |
1641 | ALL_FRAMES. */ | |
1642 | ||
1643 | static Lisp_Object | |
1644 | next_window (window, minibuf, all_frames, next_p) | |
1645 | Lisp_Object window, minibuf, all_frames; | |
1646 | int next_p; | |
1647 | { | |
1648 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1649 | |
67492200 GM |
1650 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1651 | return the first window on the frame. */ | |
1652 | if (FRAMEP (all_frames) | |
1653 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1654 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1655 | |
212116d6 | 1656 | if (next_p) |
67492200 GM |
1657 | { |
1658 | Lisp_Object list; | |
177c0ea7 | 1659 | |
67492200 GM |
1660 | /* Find WINDOW in the list of all windows. */ |
1661 | list = Fmemq (window, window_list ()); | |
1662 | ||
1663 | /* Scan forward from WINDOW to the end of the window list. */ | |
1664 | if (CONSP (list)) | |
1665 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1666 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1667 | break; |
1668 | ||
1669 | /* Scan from the start of the window list up to WINDOW. */ | |
1670 | if (!CONSP (list)) | |
1671 | for (list = Vwindow_list; | |
1672 | CONSP (list) && !EQ (XCAR (list), window); | |
1673 | list = XCDR (list)) | |
118ea242 | 1674 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1675 | break; |
1676 | ||
1677 | if (CONSP (list)) | |
1678 | window = XCAR (list); | |
1679 | } | |
1680 | else | |
1681 | { | |
1682 | Lisp_Object candidate, list; | |
177c0ea7 | 1683 | |
67492200 GM |
1684 | /* Scan through the list of windows for candidates. If there are |
1685 | candidate windows in front of WINDOW, the last one of these | |
1686 | is the one we want. If there are candidates following WINDOW | |
1687 | in the list, again the last one of these is the one we want. */ | |
1688 | candidate = Qnil; | |
1689 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1690 | { | |
1691 | if (EQ (XCAR (list), window)) | |
1692 | { | |
1693 | if (WINDOWP (candidate)) | |
1694 | break; | |
1695 | } | |
118ea242 GM |
1696 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1697 | all_frames)) | |
67492200 GM |
1698 | candidate = XCAR (list); |
1699 | } | |
1700 | ||
1701 | if (WINDOWP (candidate)) | |
1702 | window = candidate; | |
1703 | } | |
1704 | ||
1705 | return window; | |
1706 | } | |
7ab12479 | 1707 | |
7ab12479 | 1708 | |
26f6279d | 1709 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1710 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1711 | If omitted, WINDOW defaults to the selected window. | |
1712 | ||
1713 | Optional second arg MINIBUF t means count the minibuffer window even | |
1714 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1715 | it is active. MINIBUF neither t nor nil means not to count the | |
1716 | minibuffer even if it is active. | |
1717 | ||
1718 | Several frames may share a single minibuffer; if the minibuffer | |
1719 | counts, all windows on all frames that share that minibuffer count | |
1720 | too. Therefore, `next-window' can be used to iterate through the | |
1721 | set of windows even when the minibuffer is on another frame. If the | |
1722 | minibuffer does not count, only windows from WINDOW's frame count. | |
1723 | ||
1724 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1725 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1726 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1727 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1728 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1729 | Anything else means restrict to WINDOW's frame. | |
1730 | ||
1731 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1732 | `next-window' to iterate through the entire cycle of acceptable | |
1733 | windows, eventually ending up back at the window you started with. | |
1734 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1735 | (window, minibuf, all_frames) | |
67492200 | 1736 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1737 | { |
67492200 | 1738 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1739 | } |
1740 | ||
67492200 | 1741 | |
26f6279d | 1742 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1743 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1744 | If omitted, WINDOW defaults to the selected window. | |
1745 | ||
1746 | Optional second arg MINIBUF t means count the minibuffer window even | |
1747 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1748 | it is active. MINIBUF neither t nor nil means not to count the | |
1749 | minibuffer even if it is active. | |
1750 | ||
1751 | Several frames may share a single minibuffer; if the minibuffer | |
1752 | counts, all windows on all frames that share that minibuffer count | |
1753 | too. Therefore, `previous-window' can be used to iterate through | |
1754 | the set of windows even when the minibuffer is on another frame. If | |
1755 | the minibuffer does not count, only windows from WINDOW's frame count | |
1756 | ||
1757 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1758 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1759 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1760 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1761 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1762 | Anything else means restrict to WINDOW's frame. | |
1763 | ||
1764 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1765 | `previous-window' to iterate through the entire cycle of acceptable | |
1766 | windows, eventually ending up back at the window you started with. | |
1767 | `next-window' traverses the same cycle, in the reverse order. */) | |
1768 | (window, minibuf, all_frames) | |
67492200 | 1769 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1770 | { |
67492200 | 1771 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1772 | } |
1773 | ||
67492200 | 1774 | |
62c07cc7 | 1775 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1776 | doc: /* Select the ARG'th different window on this frame. |
1777 | All windows on current frame are arranged in a cyclic order. | |
1778 | This command selects the window ARG steps away in that order. | |
c2755926 LT |
1779 | A negative ARG moves in the opposite order. The optional second |
1780 | argument ALL_FRAMES has the same meaning as in `next-window', which see. */) | |
fdb82f93 | 1781 | (arg, all_frames) |
67492200 | 1782 | Lisp_Object arg, all_frames; |
7ab12479 | 1783 | { |
67492200 GM |
1784 | Lisp_Object window; |
1785 | int i; | |
7ab12479 | 1786 | |
b7826503 | 1787 | CHECK_NUMBER (arg); |
67492200 | 1788 | window = selected_window; |
177c0ea7 | 1789 | |
67492200 GM |
1790 | for (i = XINT (arg); i > 0; --i) |
1791 | window = Fnext_window (window, Qnil, all_frames); | |
1792 | for (; i < 0; ++i) | |
1793 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1794 | |
14d87dc9 | 1795 | Fselect_window (window, Qnil); |
7ab12479 JB |
1796 | return Qnil; |
1797 | } | |
67492200 GM |
1798 | |
1799 | ||
1800 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1801 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1802 | FRAME nil or omitted means use the selected frame. | |
1803 | WINDOW nil or omitted means use the selected window. | |
1804 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1805 | MINIBUF nil or omitted means include the minibuffer window only | |
1806 | if it's active. | |
1807 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1808 | (frame, minibuf, window) | |
cd2904bd GM |
1809 | Lisp_Object frame, minibuf, window; |
1810 | { | |
cd2904bd GM |
1811 | if (NILP (window)) |
1812 | window = selected_window; | |
1813 | if (NILP (frame)) | |
1814 | frame = selected_frame; | |
1815 | ||
1816 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1817 | error ("Window is on a different frame"); | |
1818 | ||
1819 | return window_list_1 (window, minibuf, frame); | |
1820 | } | |
1821 | ||
1822 | ||
1823 | /* Return a list of windows in canonical ordering. Arguments are like | |
1824 | for `next-window'. */ | |
1825 | ||
1826 | static Lisp_Object | |
1827 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1828 | Lisp_Object window, minibuf, all_frames; |
67492200 | 1829 | { |
403de3b4 | 1830 | Lisp_Object tail, list, rest; |
67492200 GM |
1831 | |
1832 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1833 | list = Qnil; | |
177c0ea7 | 1834 | |
67492200 | 1835 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 1836 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 1837 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 1838 | |
403de3b4 RS |
1839 | /* Rotate the list to start with WINDOW. */ |
1840 | list = Fnreverse (list); | |
1841 | rest = Fmemq (window, list); | |
1842 | if (!NILP (rest) && !EQ (rest, list)) | |
1843 | { | |
1725a7c9 | 1844 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
1845 | ; |
1846 | XSETCDR (tail, Qnil); | |
1847 | list = nconc2 (rest, list); | |
1848 | } | |
1849 | return list; | |
67492200 GM |
1850 | } |
1851 | ||
1852 | ||
7ab12479 JB |
1853 | \f |
1854 | /* Look at all windows, performing an operation specified by TYPE | |
1855 | with argument OBJ. | |
75d8f668 | 1856 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1857 | Qnil, look at just the selected frame; |
89bca612 | 1858 | Qvisible, look at visible frames; |
75d8f668 | 1859 | a frame, just look at windows on that frame. |
85fe3b5e | 1860 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1861 | |
1862 | enum window_loop | |
1863 | { | |
1864 | WINDOW_LOOP_UNUSED, | |
1865 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1866 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1867 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1868 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1869 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 1870 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 1871 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 1872 | CHECK_ALL_WINDOWS |
7ab12479 JB |
1873 | }; |
1874 | ||
1875 | static Lisp_Object | |
44fa5b1e | 1876 | window_loop (type, obj, mini, frames) |
7ab12479 | 1877 | enum window_loop type; |
118ea242 | 1878 | Lisp_Object obj, frames; |
7ab12479 JB |
1879 | int mini; |
1880 | { | |
118ea242 GM |
1881 | Lisp_Object window, windows, best_window, frame_arg; |
1882 | struct frame *f; | |
ffdc852d | 1883 | struct gcpro gcpro1; |
177c0ea7 | 1884 | |
44fa5b1e JB |
1885 | /* If we're only looping through windows on a particular frame, |
1886 | frame points to that frame. If we're looping through windows | |
1887 | on all frames, frame is 0. */ | |
1888 | if (FRAMEP (frames)) | |
118ea242 | 1889 | f = XFRAME (frames); |
44fa5b1e | 1890 | else if (NILP (frames)) |
118ea242 | 1891 | f = SELECTED_FRAME (); |
7ab12479 | 1892 | else |
118ea242 | 1893 | f = NULL; |
177c0ea7 | 1894 | |
118ea242 | 1895 | if (f) |
89bca612 | 1896 | frame_arg = Qlambda; |
0f8fe9a2 | 1897 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 1898 | frame_arg = frames; |
89bca612 RS |
1899 | else if (EQ (frames, Qvisible)) |
1900 | frame_arg = frames; | |
118ea242 GM |
1901 | else |
1902 | frame_arg = Qt; | |
7ab12479 | 1903 | |
89bca612 RS |
1904 | /* frame_arg is Qlambda to stick to one frame, |
1905 | Qvisible to consider all visible frames, | |
1906 | or Qt otherwise. */ | |
1907 | ||
7ab12479 | 1908 | /* Pick a window to start with. */ |
017b2bad | 1909 | if (WINDOWP (obj)) |
118ea242 GM |
1910 | window = obj; |
1911 | else if (f) | |
1912 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1913 | else |
118ea242 | 1914 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1915 | |
cd2904bd | 1916 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1917 | GCPRO1 (windows); |
7ab12479 | 1918 | best_window = Qnil; |
118ea242 GM |
1919 | |
1920 | for (; CONSP (windows); windows = CDR (windows)) | |
7ab12479 | 1921 | { |
118ea242 | 1922 | struct window *w; |
177c0ea7 | 1923 | |
118ea242 GM |
1924 | window = XCAR (windows); |
1925 | w = XWINDOW (window); | |
177c0ea7 | 1926 | |
118ea242 GM |
1927 | /* Note that we do not pay attention here to whether the frame |
1928 | is visible, since Fwindow_list skips non-visible frames if | |
1929 | that is desired, under the control of frame_arg. */ | |
1930 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
1931 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1932 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1933 | || (mini && minibuf_level > 0)) |
1934 | switch (type) | |
1935 | { | |
1936 | case GET_BUFFER_WINDOW: | |
118ea242 | 1937 | if (EQ (w->buffer, obj) |
5c204627 RS |
1938 | /* Don't find any minibuffer window |
1939 | except the one that is currently in use. */ | |
118ea242 GM |
1940 | && (MINI_WINDOW_P (w) |
1941 | ? EQ (window, minibuf_window) | |
1942 | : 1)) | |
1943 | { | |
5ddc1b75 GM |
1944 | if (NILP (best_window)) |
1945 | best_window = window; | |
1946 | else if (EQ (window, selected_window)) | |
1947 | /* For compatibility with 20.x, prefer to return | |
1948 | selected-window. */ | |
1949 | best_window = window; | |
118ea242 | 1950 | } |
7ab12479 JB |
1951 | break; |
1952 | ||
1953 | case GET_LRU_WINDOW: | |
1954 | /* t as arg means consider only full-width windows */ | |
118ea242 | 1955 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w)) |
7ab12479 | 1956 | break; |
7ab12479 | 1957 | /* Ignore dedicated windows and minibuffers. */ |
a5731348 | 1958 | if (MINI_WINDOW_P (w) || EQ (w->dedicated, Qt)) |
7ab12479 | 1959 | break; |
265a9e55 | 1960 | if (NILP (best_window) |
7ab12479 | 1961 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
1962 | > XFASTINT (w->use_time))) |
1963 | best_window = window; | |
7ab12479 JB |
1964 | break; |
1965 | ||
1966 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
1967 | if (!EQ (window, obj)) |
1968 | Fdelete_window (window); | |
7ab12479 JB |
1969 | break; |
1970 | ||
1971 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 1972 | if (EQ (w->buffer, obj)) |
7ab12479 | 1973 | { |
118ea242 | 1974 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
1975 | |
1976 | /* If this window is dedicated, and in a frame of its own, | |
1977 | kill the frame. */ | |
118ea242 GM |
1978 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
1979 | && !NILP (w->dedicated) | |
3548e138 | 1980 | && other_visible_frames (f)) |
7ab12479 | 1981 | { |
3548e138 RS |
1982 | /* Skip the other windows on this frame. |
1983 | There might be one, the minibuffer! */ | |
118ea242 GM |
1984 | while (CONSP (XCDR (windows)) |
1985 | && EQ (XWINDOW (XCAR (windows))->frame, | |
1986 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
1987 | windows = XCDR (windows); | |
177c0ea7 | 1988 | |
3548e138 | 1989 | /* Now we can safely delete the frame. */ |
118ea242 GM |
1990 | Fdelete_frame (w->frame, Qnil); |
1991 | } | |
1992 | else if (NILP (w->parent)) | |
1993 | { | |
1994 | /* If we're deleting the buffer displayed in the | |
1995 | only window on the frame, find a new buffer to | |
1996 | display there. */ | |
1997 | Lisp_Object buffer; | |
1998 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 1999 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2000 | if (EQ (window, selected_window)) |
2001 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2002 | } |
2003 | else | |
118ea242 | 2004 | Fdelete_window (window); |
7ab12479 JB |
2005 | } |
2006 | break; | |
2007 | ||
2008 | case GET_LARGEST_WINDOW: | |
7ab12479 | 2009 | { |
118ea242 | 2010 | /* Ignore dedicated windows and minibuffers. */ |
a5731348 | 2011 | if (MINI_WINDOW_P (w) || EQ (w->dedicated, Qt)) |
118ea242 | 2012 | break; |
177c0ea7 | 2013 | |
c930dfab | 2014 | if (NILP (best_window)) |
118ea242 | 2015 | best_window = window; |
c930dfab GM |
2016 | else |
2017 | { | |
2018 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2019 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2020 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2021 | best_window = window; |
2022 | } | |
7ab12479 JB |
2023 | } |
2024 | break; | |
2025 | ||
2026 | case UNSHOW_BUFFER: | |
118ea242 | 2027 | if (EQ (w->buffer, obj)) |
7ab12479 | 2028 | { |
118ea242 GM |
2029 | Lisp_Object buffer; |
2030 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2031 | |
7ab12479 | 2032 | /* Find another buffer to show in this window. */ |
118ea242 | 2033 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2034 | |
38ab08d1 RS |
2035 | /* If this window is dedicated, and in a frame of its own, |
2036 | kill the frame. */ | |
118ea242 GM |
2037 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2038 | && !NILP (w->dedicated) | |
38ab08d1 | 2039 | && other_visible_frames (f)) |
45945a7b RS |
2040 | { |
2041 | /* Skip the other windows on this frame. | |
2042 | There might be one, the minibuffer! */ | |
118ea242 GM |
2043 | while (CONSP (XCDR (windows)) |
2044 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2045 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2046 | windows = XCDR (windows); | |
177c0ea7 | 2047 | |
45945a7b | 2048 | /* Now we can safely delete the frame. */ |
118ea242 | 2049 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2050 | } |
a5731348 SM |
2051 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2052 | { | |
2053 | Lisp_Object window; | |
2054 | XSETWINDOW (window, w); | |
2055 | /* If this window is dedicated and not the only window | |
2056 | in its frame, then kill it. */ | |
2057 | Fdelete_window (window); | |
2058 | } | |
38ab08d1 | 2059 | else |
38ab08d1 RS |
2060 | { |
2061 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2062 | w->dedicated = Qnil; |
949cf20f | 2063 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2064 | if (EQ (window, selected_window)) |
2065 | Fset_buffer (w->buffer); | |
38ab08d1 | 2066 | } |
7ab12479 JB |
2067 | } |
2068 | break; | |
3f8ab7bd | 2069 | |
6b61353c KH |
2070 | case REDISPLAY_BUFFER_WINDOWS: |
2071 | if (EQ (w->buffer, obj)) | |
2072 | { | |
2073 | mark_window_display_accurate (window, 0); | |
2074 | w->update_mode_line = Qt; | |
2075 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2076 | ++update_mode_lines; | |
2077 | best_window = window; | |
2078 | } | |
2079 | break; | |
2080 | ||
3f8ab7bd RS |
2081 | /* Check for a window that has a killed buffer. */ |
2082 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2083 | if (! NILP (w->buffer) |
2084 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2085 | abort (); |
118ea242 | 2086 | break; |
6bbd7a29 GM |
2087 | |
2088 | case WINDOW_LOOP_UNUSED: | |
2089 | break; | |
7ab12479 | 2090 | } |
7ab12479 | 2091 | } |
7ab12479 | 2092 | |
118ea242 | 2093 | UNGCPRO; |
7ab12479 | 2094 | return best_window; |
37962e60 | 2095 | } |
605be8af | 2096 | |
3f8ab7bd RS |
2097 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2098 | ||
233a4a2c | 2099 | void |
3f8ab7bd RS |
2100 | check_all_windows () |
2101 | { | |
2102 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2103 | } | |
2104 | ||
7ab12479 | 2105 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
fdb82f93 | 2106 | doc: /* Return the window least recently selected or used for display. |
6b61353c | 2107 | Return a full-width window if possible. |
c2755926 | 2108 | A minibuffer window is never a candidate. |
0c2cb753 RS |
2109 | A dedicated window is never a candidate, so if all windows are dedicated, |
2110 | the value is nil. | |
fdb82f93 PJ |
2111 | If optional argument FRAME is `visible', search all visible frames. |
2112 | If FRAME is 0, search all visible and iconified frames. | |
2113 | If FRAME is t, search all frames. | |
2114 | If FRAME is nil, search only the selected frame. | |
2115 | If FRAME is a frame, search only that frame. */) | |
2116 | (frame) | |
2117 | Lisp_Object frame; | |
7ab12479 JB |
2118 | { |
2119 | register Lisp_Object w; | |
2120 | /* First try for a window that is full-width */ | |
89bca612 | 2121 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 2122 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2123 | return w; |
2124 | /* If none of them, try the rest */ | |
89bca612 | 2125 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
2126 | } |
2127 | ||
2128 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
fdb82f93 | 2129 | doc: /* Return the largest window in area. |
c2755926 | 2130 | A minibuffer window is never a candidate. |
0c2cb753 RS |
2131 | A dedicated window is never a candidate, so if all windows are dedicated, |
2132 | the value is nil. | |
fdb82f93 PJ |
2133 | If optional argument FRAME is `visible', search all visible frames. |
2134 | If FRAME is 0, search all visible and iconified frames. | |
2135 | If FRAME is t, search all frames. | |
2136 | If FRAME is nil, search only the selected frame. | |
2137 | If FRAME is a frame, search only that frame. */) | |
2138 | (frame) | |
2139 | Lisp_Object frame; | |
7ab12479 JB |
2140 | { |
2141 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 2142 | frame); |
7ab12479 JB |
2143 | } |
2144 | ||
2145 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2146 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2147 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2148 | If optional argument FRAME is `visible', search all visible frames. |
2149 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2150 | If FRAME is t, search all frames. | |
2151 | If FRAME is nil, search only the selected frame. | |
2152 | If FRAME is a frame, search only that frame. */) | |
2153 | (buffer, frame) | |
2154 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2155 | { |
2156 | buffer = Fget_buffer (buffer); | |
017b2bad | 2157 | if (BUFFERP (buffer)) |
44fa5b1e | 2158 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2159 | else |
2160 | return Qnil; | |
2161 | } | |
2162 | ||
2163 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2164 | 0, 1, "", |
2165 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2166 | Only the frame WINDOW is on is affected. | |
2167 | This function tries to reduce display jumps | |
2168 | by keeping the text previously visible in WINDOW | |
2169 | in the same place on the frame. Doing this depends on | |
2170 | the value of (window-start WINDOW), so if calling this function | |
2171 | in a program gives strange scrolling, make sure the window-start | |
2172 | value is reasonable when this function is called. */) | |
2173 | (window) | |
7ab12479 JB |
2174 | Lisp_Object window; |
2175 | { | |
2176 | struct window *w; | |
00d3d838 | 2177 | int startpos; |
85fe3b5e | 2178 | int top, new_top; |
7ab12479 | 2179 | |
265a9e55 | 2180 | if (NILP (window)) |
7ab12479 JB |
2181 | window = selected_window; |
2182 | else | |
b7826503 | 2183 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2184 | w = XWINDOW (window); |
a2b38b3c | 2185 | |
00d3d838 | 2186 | startpos = marker_position (w->start); |
949cf20f | 2187 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2188 | |
a2b38b3c RS |
2189 | if (MINI_WINDOW_P (w) && top > 0) |
2190 | error ("Can't expand minibuffer to full frame"); | |
2191 | ||
70728a80 | 2192 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2193 | |
00d3d838 KH |
2194 | /* Try to minimize scrolling, by setting the window start to the point |
2195 | will cause the text at the old window start to be at the same place | |
2196 | on the frame. But don't try to do this if the window start is | |
2197 | outside the visible portion (as might happen when the display is | |
2198 | not current, due to typeahead). */ | |
949cf20f | 2199 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2200 | if (new_top != top |
2201 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2202 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2203 | { | |
2204 | struct position pos; | |
2205 | struct buffer *obuf = current_buffer; | |
2206 | ||
2207 | Fset_buffer (w->buffer); | |
2208 | /* This computation used to temporarily move point, but that can | |
2209 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2210 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2211 | |
b73ea88e | 2212 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2213 | w->window_end_valid = Qnil; |
b73ea88e RS |
2214 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2215 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2216 | : Qnil); |
80622eec RS |
2217 | /* We need to do this, so that the window-scroll-functions |
2218 | get called. */ | |
4d047f50 | 2219 | w->optional_new_start = Qt; |
00d3d838 KH |
2220 | |
2221 | set_buffer_internal (obuf); | |
2222 | } | |
5500c422 | 2223 | |
7ab12479 JB |
2224 | return Qnil; |
2225 | } | |
2226 | ||
2227 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2228 | 1, 2, "bDelete windows on (buffer): ", |
2229 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2230 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2231 | Optional second argument FRAME controls which frames are affected. |
2232 | If optional argument FRAME is `visible', search all visible frames. | |
2233 | If FRAME is 0, search all visible and iconified frames. | |
2234 | If FRAME is nil, search all frames. | |
2235 | If FRAME is t, search only the selected frame. | |
2236 | If FRAME is a frame, search only that frame. */) | |
2237 | (buffer, frame) | |
26f6279d | 2238 | Lisp_Object buffer, frame; |
7ab12479 | 2239 | { |
26f6279d JB |
2240 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2241 | expects. */ | |
c520265e RS |
2242 | if (NILP (frame)) |
2243 | frame = Qt; | |
2244 | else if (EQ (frame, Qt)) | |
2245 | frame = Qnil; | |
26f6279d | 2246 | |
265a9e55 | 2247 | if (!NILP (buffer)) |
7ab12479 JB |
2248 | { |
2249 | buffer = Fget_buffer (buffer); | |
b7826503 | 2250 | CHECK_BUFFER (buffer); |
26f6279d | 2251 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2252 | } |
177c0ea7 | 2253 | |
7ab12479 JB |
2254 | return Qnil; |
2255 | } | |
2256 | ||
2257 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2258 | Sreplace_buffer_in_windows, |
2259 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2260 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2261 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2262 | (buffer) |
7ab12479 JB |
2263 | Lisp_Object buffer; |
2264 | { | |
265a9e55 | 2265 | if (!NILP (buffer)) |
7ab12479 JB |
2266 | { |
2267 | buffer = Fget_buffer (buffer); | |
b7826503 | 2268 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2269 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2270 | } | |
2271 | return Qnil; | |
2272 | } | |
ff58478b RS |
2273 | |
2274 | /* Replace BUFFER with some other buffer in all windows | |
2275 | of all frames, even those on other keyboards. */ | |
2276 | ||
2277 | void | |
2278 | replace_buffer_in_all_windows (buffer) | |
2279 | Lisp_Object buffer; | |
2280 | { | |
27abb84f | 2281 | #ifdef MULTI_KBOARD |
ff58478b RS |
2282 | Lisp_Object tail, frame; |
2283 | ||
ff58478b RS |
2284 | /* A single call to window_loop won't do the job |
2285 | because it only considers frames on the current keyboard. | |
2286 | So loop manually over frames, and handle each one. */ | |
2287 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2288 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2289 | #else |
db7f721d | 2290 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2291 | #endif |
2292 | } | |
7ab12479 JB |
2293 | \f |
2294 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2295 | |
2296 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2297 | might crash Emacs. */ | |
5500c422 | 2298 | |
a481b3ea | 2299 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2300 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2301 | |
2302 | /* Make sure that window_min_height and window_min_width are | |
2303 | not too small; if they are, set them to safe minima. */ | |
2304 | ||
2305 | static void | |
2306 | check_min_window_sizes () | |
2307 | { | |
2308 | /* Smaller values might permit a crash. */ | |
2309 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2310 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2311 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2312 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2313 | } | |
2314 | ||
2315 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2316 | minimum allowable size. */ | |
5500c422 | 2317 | |
605be8af | 2318 | void |
a481b3ea | 2319 | check_frame_size (frame, rows, cols) |
605be8af JB |
2320 | FRAME_PTR frame; |
2321 | int *rows, *cols; | |
a481b3ea | 2322 | { |
628df3bf | 2323 | /* For height, we have to see: |
54b8bcb5 RS |
2324 | how many windows the frame has at minimum (one or two), |
2325 | and whether it has a menu bar or other special stuff at the top. */ | |
2326 | int min_height | |
2327 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2328 | ? MIN_SAFE_WINDOW_HEIGHT | |
2329 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2330 | |
5500c422 GM |
2331 | if (FRAME_TOP_MARGIN (frame) > 0) |
2332 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2333 | |
2334 | if (*rows < min_height) | |
2335 | *rows = min_height; | |
2336 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2337 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2338 | } | |
2339 | ||
c1636aa6 | 2340 | |
233a4a2c GM |
2341 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2342 | check if W's width can be changed, otherwise check W's height. | |
2343 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2344 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2345 | either. */ | |
c1636aa6 | 2346 | |
233a4a2c GM |
2347 | static int |
2348 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2349 | struct window *w; | |
2350 | int width_p, check_siblings_p; | |
2351 | { | |
2352 | int fixed_p; | |
2353 | struct window *c; | |
177c0ea7 | 2354 | |
233a4a2c GM |
2355 | if (!NILP (w->hchild)) |
2356 | { | |
2357 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2358 | |
233a4a2c GM |
2359 | if (width_p) |
2360 | { | |
2361 | /* A horiz. combination is fixed-width if all of if its | |
2362 | children are. */ | |
2363 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2364 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2365 | fixed_p = c == NULL; | |
2366 | } | |
2367 | else | |
2368 | { | |
2369 | /* A horiz. combination is fixed-height if one of if its | |
2370 | children is. */ | |
2371 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2372 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2373 | fixed_p = c != NULL; | |
2374 | } | |
2375 | } | |
2376 | else if (!NILP (w->vchild)) | |
2377 | { | |
2378 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2379 | |
233a4a2c GM |
2380 | if (width_p) |
2381 | { | |
2382 | /* A vert. combination is fixed-width if one of if its | |
2383 | children is. */ | |
2384 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2385 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2386 | fixed_p = c != NULL; | |
2387 | } | |
2388 | else | |
2389 | { | |
2390 | /* A vert. combination is fixed-height if all of if its | |
2391 | children are. */ | |
2392 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2393 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2394 | fixed_p = c == NULL; | |
2395 | } | |
2396 | } | |
2397 | else if (BUFFERP (w->buffer)) | |
2398 | { | |
a34dfd12 GM |
2399 | if (w->height_fixed_p && !width_p) |
2400 | fixed_p = 1; | |
2401 | else | |
233a4a2c | 2402 | { |
a34dfd12 GM |
2403 | struct buffer *old = current_buffer; |
2404 | Lisp_Object val; | |
177c0ea7 | 2405 | |
a34dfd12 GM |
2406 | current_buffer = XBUFFER (w->buffer); |
2407 | val = find_symbol_value (Qwindow_size_fixed); | |
2408 | current_buffer = old; | |
2409 | ||
2410 | fixed_p = 0; | |
2411 | if (!EQ (val, Qunbound)) | |
2412 | { | |
2413 | fixed_p = !NILP (val); | |
177c0ea7 | 2414 | |
a34dfd12 GM |
2415 | if (fixed_p |
2416 | && ((EQ (val, Qheight) && width_p) | |
2417 | || (EQ (val, Qwidth) && !width_p))) | |
2418 | fixed_p = 0; | |
2419 | } | |
233a4a2c GM |
2420 | } |
2421 | ||
2422 | /* Can't tell if this one is resizable without looking at | |
2423 | siblings. If all siblings are fixed-size this one is too. */ | |
2424 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2425 | { | |
2426 | Lisp_Object child; | |
177c0ea7 | 2427 | |
233a4a2c GM |
2428 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2429 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2430 | break; | |
2431 | ||
2432 | if (NILP (child)) | |
2433 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2434 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2435 | break; | |
2436 | ||
2437 | if (NILP (child)) | |
2438 | fixed_p = 1; | |
2439 | } | |
2440 | } | |
2441 | else | |
2442 | fixed_p = 1; | |
2443 | ||
2444 | return fixed_p; | |
2445 | } | |
177c0ea7 | 2446 | |
233a4a2c GM |
2447 | |
2448 | /* Return the minimum size of window W, not taking fixed-width windows | |
2449 | into account. WIDTH_P non-zero means return the minimum width, | |
2450 | otherwise return the minimum height. If W is a combination window, | |
2451 | compute the minimum size from the minimum sizes of W's children. */ | |
2452 | ||
2453 | static int | |
2454 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2455 | struct window *w; |
2456 | int width_p; | |
2457 | { | |
233a4a2c | 2458 | struct window *c; |
c1636aa6 | 2459 | int size; |
177c0ea7 | 2460 | |
233a4a2c GM |
2461 | if (!NILP (w->hchild)) |
2462 | { | |
2463 | c = XWINDOW (w->hchild); | |
2464 | size = 0; | |
177c0ea7 | 2465 | |
233a4a2c GM |
2466 | if (width_p) |
2467 | { | |
2468 | /* The min width of a horizontal combination is | |
2469 | the sum of the min widths of its children. */ | |
2470 | while (c) | |
2471 | { | |
2472 | size += window_min_size_1 (c, width_p); | |
2473 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2474 | } | |
2475 | } | |
2476 | else | |
2477 | { | |
2478 | /* The min height a horizontal combination equals | |
2479 | the maximum of all min height of its children. */ | |
2480 | while (c) | |
2481 | { | |
2482 | int min_size = window_min_size_1 (c, width_p); | |
2483 | size = max (min_size, size); | |
2484 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2485 | } | |
2486 | } | |
2487 | } | |
2488 | else if (!NILP (w->vchild)) | |
2489 | { | |
2490 | c = XWINDOW (w->vchild); | |
2491 | size = 0; | |
177c0ea7 | 2492 | |
233a4a2c GM |
2493 | if (width_p) |
2494 | { | |
2495 | /* The min width of a vertical combination is | |
2496 | the maximum of the min widths of its children. */ | |
2497 | while (c) | |
2498 | { | |
2499 | int min_size = window_min_size_1 (c, width_p); | |
2500 | size = max (min_size, size); | |
2501 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2502 | } | |
2503 | } | |
2504 | else | |
2505 | { | |
2506 | /* The min height of a vertical combination equals | |
2507 | the sum of the min height of its children. */ | |
2508 | while (c) | |
2509 | { | |
2510 | size += window_min_size_1 (c, width_p); | |
2511 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2512 | } | |
2513 | } | |
2514 | } | |
c1636aa6 GM |
2515 | else |
2516 | { | |
233a4a2c GM |
2517 | if (width_p) |
2518 | size = window_min_width; | |
c1636aa6 | 2519 | else |
233a4a2c GM |
2520 | { |
2521 | if (MINI_WINDOW_P (w) | |
2522 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2523 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2524 | size = 1; |
2525 | else | |
2526 | size = window_min_height; | |
2527 | } | |
c1636aa6 GM |
2528 | } |
2529 | ||
2530 | return size; | |
2531 | } | |
2532 | ||
2533 | ||
233a4a2c GM |
2534 | /* Return the minimum size of window W, taking fixed-size windows into |
2535 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2536 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2537 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2538 | unless FIXED is null. */ | |
7ab12479 | 2539 | |
233a4a2c | 2540 | static int |
f984d4fc | 2541 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2542 | struct window *w; |
f984d4fc | 2543 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2544 | { |
2545 | int size, fixed_p; | |
2546 | ||
f984d4fc GM |
2547 | if (ignore_fixed_p) |
2548 | fixed_p = 0; | |
2549 | else | |
2550 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2551 | |
233a4a2c GM |
2552 | if (fixed) |
2553 | *fixed = fixed_p; | |
177c0ea7 | 2554 | |
233a4a2c | 2555 | if (fixed_p) |
949cf20f | 2556 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2557 | else |
2558 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2559 | |
233a4a2c GM |
2560 | return size; |
2561 | } | |
2562 | ||
2563 | ||
79fd290e | 2564 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2565 | Return 1 if window width is ok after adjustment; 0 if window |
2566 | is still too narrow. */ | |
2567 | ||
2568 | static int | |
2569 | adjust_window_margins (w) | |
2570 | struct window *w; | |
2571 | { | |
2572 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2573 | - WINDOW_FRINGE_COLS (w) | |
2574 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2575 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2576 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2577 | ||
2578 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2579 | return 1; | |
2580 | ||
2581 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2582 | return 0; | |
2583 | ||
2584 | /* Window's text area is too narrow, but reducing the window | |
2585 | margins will fix that. */ | |
2586 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2587 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2588 | { | |
2589 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2590 | w->left_margin_cols = w->right_margin_cols | |
2591 | = make_number (margin_cols/2); | |
2592 | else | |
2593 | w->right_margin_cols = make_number (margin_cols); | |
2594 | } | |
2595 | else | |
2596 | w->left_margin_cols = make_number (margin_cols); | |
2597 | return 1; | |
2598 | } | |
2599 | ||
6b61353c KH |
2600 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2601 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2602 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2603 | can shrink is SHRINKABLE. | |
2604 | The minimum size a window can have is MIN_SIZE. | |
2605 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2606 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2607 | shrinking rows. | |
2608 | ||
2609 | This function returns an allocated array of new sizes that the caller | |
2610 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2611 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2612 | the second, and so on. | |
2613 | ||
2614 | This function tries to keep windows at least at the minimum size | |
2615 | and resize other windows before it resizes any window to zero (i.e. | |
2616 | delete that window). | |
2617 | ||
2618 | Windows are resized proportional to their size, so bigger windows | |
2619 | shrink more than smaller windows. */ | |
2620 | static int * | |
2621 | shrink_windows (total, size, nchildren, shrinkable, | |
2622 | min_size, resize_fixed_p, forward, width_p) | |
2623 | int total, size, nchildren, shrinkable, min_size; | |
2624 | int resize_fixed_p, width_p; | |
2625 | Lisp_Object forward; | |
2626 | { | |
2627 | int available_resize = 0; | |
2628 | int *new_sizes; | |
2629 | struct window *c; | |
2630 | Lisp_Object child; | |
2631 | int smallest = total; | |
2632 | int total_removed = 0; | |
2633 | int total_shrink = total - size; | |
2634 | int i; | |
2635 | ||
2636 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2637 | ||
2638 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2639 | { | |
2640 | int child_size; | |
2641 | ||
2642 | c = XWINDOW (child); | |
2643 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2644 | ||
2645 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2646 | new_sizes[i] = -1; | |
2647 | else | |
2648 | { | |
2649 | new_sizes[i] = child_size; | |
2650 | if (child_size > min_size) | |
2651 | available_resize += child_size - min_size; | |
2652 | } | |
2653 | } | |
2654 | /* We might need to shrink some windows to zero. Find the smallest | |
2655 | windows and set them to 0 until we can fulfil the new size. */ | |
2656 | ||
2657 | while (shrinkable > 1 && size + available_resize < total) | |
2658 | { | |
2659 | for (i = 0; i < nchildren; ++i) | |
2660 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2661 | smallest = new_sizes[i]; | |
2662 | ||
2663 | for (i = 0; i < nchildren; ++i) | |
2664 | if (new_sizes[i] == smallest) | |
2665 | { | |
2666 | /* Resize this window down to zero. */ | |
2667 | new_sizes[i] = 0; | |
2668 | if (smallest > min_size) | |
2669 | available_resize -= smallest - min_size; | |
2670 | available_resize += smallest; | |
2671 | --shrinkable; | |
2672 | total_removed += smallest; | |
2673 | ||
ef614e04 JD |
2674 | /* We don't know what the smallest is now. */ |
2675 | smallest = total; | |
2676 | ||
6b61353c KH |
2677 | /* Out of for, just remove one window at the time and |
2678 | check again if we have enough space. */ | |
2679 | break; | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | /* Now, calculate the new sizes. Try to shrink each window | |
2684 | proportional to its size. */ | |
2685 | for (i = 0; i < nchildren; ++i) | |
2686 | { | |
2687 | if (new_sizes[i] > min_size) | |
2688 | { | |
2689 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2690 | if (new_sizes[i] - to_shrink < min_size) | |
2691 | to_shrink = new_sizes[i] - min_size; | |
2692 | new_sizes[i] -= to_shrink; | |
2693 | total_removed += to_shrink; | |
2694 | } | |
2695 | } | |
2696 | ||
2697 | /* Any reminder due to rounding, we just subtract from windows | |
2698 | that are left and still can be shrunk. */ | |
2699 | while (total_shrink > total_removed) | |
2700 | { | |
ef614e04 JD |
2701 | int nonzero_sizes = 0; |
2702 | int nonzero_idx = -1; | |
2703 | ||
2704 | for (i = 0; i < nchildren; ++i) | |
2705 | if (new_sizes[i] > 0) | |
2706 | { | |
2707 | ++nonzero_sizes; | |
2708 | nonzero_idx = i; | |
2709 | } | |
c49a0495 | 2710 | |
6b61353c KH |
2711 | for (i = 0; i < nchildren; ++i) |
2712 | if (new_sizes[i] > min_size) | |
2713 | { | |
2714 | --new_sizes[i]; | |
2715 | ++total_removed; | |
2716 | ||
2717 | /* Out of for, just shrink one window at the time and | |
2718 | check again if we have enough space. */ | |
2719 | break; | |
2720 | } | |
ef614e04 JD |
2721 | |
2722 | ||
2723 | /* Special case, only one window left. */ | |
2724 | if (nonzero_sizes == 1) | |
2725 | break; | |
2726 | } | |
2727 | ||
2728 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2729 | while (total_shrink < total_removed) | |
2730 | { | |
2731 | for (i = 0; i < nchildren; ++i) | |
2732 | { | |
2733 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2734 | { | |
2735 | ++new_sizes[i]; | |
2736 | --total_removed; | |
2737 | break; | |
2738 | } | |
2739 | } | |
6b61353c KH |
2740 | } |
2741 | ||
2742 | return new_sizes; | |
2743 | } | |
949cf20f | 2744 | |
233a4a2c GM |
2745 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2746 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2747 | keep their proportionate size relative to WINDOW. Propagate | |
2748 | WINDOW's top or left edge position to children. Delete windows | |
192c3131 RS |
2749 | that become too small unless NODELETE_P is non-zero. |
2750 | ||
2751 | If NODELETE_P is 2, that means we do delete windows that are | |
2752 | too small, even if they were too small before! */ | |
233a4a2c GM |
2753 | |
2754 | static void | |
2755 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2756 | Lisp_Object window; |
233a4a2c | 2757 | int size, width_p, nodelete_p; |
7ab12479 | 2758 | { |
233a4a2c GM |
2759 | struct window *w = XWINDOW (window); |
2760 | struct window *c; | |
2761 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 2762 | int old_size, min_size, safe_min_size; |
7ab12479 | 2763 | |
949cf20f KS |
2764 | /* We test nodelete_p != 2 and nodelete_p != 1 below, so it |
2765 | seems like it's too soon to do this here. ++KFS. */ | |
192c3131 RS |
2766 | if (nodelete_p == 2) |
2767 | nodelete_p = 0; | |
2768 | ||
a481b3ea | 2769 | check_min_window_sizes (); |
7ae2f10f | 2770 | size = max (0, size); |
177c0ea7 | 2771 | |
b5f05b50 GM |
2772 | /* If the window has been "too small" at one point, |
2773 | don't delete it for being "too small" in the future. | |
2774 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2775 | if (width_p) |
2776 | { | |
949cf20f | 2777 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 2778 | min_size = window_min_width; |
949cf20f KS |
2779 | /* Ensure that there is room for the scroll bar and fringes! |
2780 | We may reduce display margins though. */ | |
2781 | safe_min_size = (MIN_SAFE_WINDOW_WIDTH | |
2782 | + WINDOW_FRINGE_COLS (w) | |
2783 | + WINDOW_SCROLL_BAR_COLS (w)); | |
233a4a2c GM |
2784 | } |
2785 | else | |
2786 | { | |
949cf20f | 2787 | old_size = XINT (w->total_lines); |
233a4a2c | 2788 | min_size = window_min_height; |
949cf20f | 2789 | safe_min_size = MIN_SAFE_WINDOW_HEIGHT; |
233a4a2c | 2790 | } |
192c3131 RS |
2791 | |
2792 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
2793 | w->too_small_ok = Qt; |
2794 | ||
233a4a2c | 2795 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 2796 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 2797 | { |
b5f05b50 | 2798 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2799 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
2800 | if (min_size < safe_min_size) |
2801 | min_size = safe_min_size; | |
233a4a2c | 2802 | if (size < min_size) |
c1636aa6 GM |
2803 | { |
2804 | delete_window (window); | |
2805 | return; | |
2806 | } | |
7ab12479 JB |
2807 | } |
2808 | ||
233a4a2c | 2809 | /* Set redisplay hints. */ |
7ae2f10f GM |
2810 | w->last_modified = make_number (0); |
2811 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2812 | windows_or_buffers_changed++; |
7ae2f10f | 2813 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2814 | |
233a4a2c GM |
2815 | if (width_p) |
2816 | { | |
2817 | sideward = &w->vchild; | |
2818 | forward = &w->hchild; | |
949cf20f KS |
2819 | w->total_cols = make_number (size); |
2820 | adjust_window_margins (w); | |
233a4a2c GM |
2821 | } |
2822 | else | |
2823 | { | |
2824 | sideward = &w->hchild; | |
2825 | forward = &w->vchild; | |
949cf20f KS |
2826 | w->total_lines = make_number (size); |
2827 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
2828 | } |
2829 | ||
2830 | if (!NILP (*sideward)) | |
7ab12479 | 2831 | { |
233a4a2c | 2832 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2833 | { |
233a4a2c GM |
2834 | c = XWINDOW (child); |
2835 | if (width_p) | |
949cf20f | 2836 | c->left_col = w->left_col; |
233a4a2c | 2837 | else |
949cf20f | 2838 | c->top_line = w->top_line; |
233a4a2c | 2839 | size_window (child, size, width_p, nodelete_p); |
7ab12479 JB |
2840 | } |
2841 | } | |
233a4a2c | 2842 | else if (!NILP (*forward)) |
7ab12479 | 2843 | { |
233a4a2c GM |
2844 | int fixed_size, each, extra, n; |
2845 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2846 | int last_pos, first_pos, nchildren, total; |
6b61353c | 2847 | int *new_sizes = NULL; |
233a4a2c GM |
2848 | |
2849 | /* Determine the fixed-size portion of the this window, and the | |
2850 | number of child windows. */ | |
8b6d9dc9 | 2851 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2852 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2853 | { |
8b6d9dc9 | 2854 | int child_size; |
177c0ea7 | 2855 | |
7ab12479 | 2856 | c = XWINDOW (child); |
949cf20f | 2857 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 2858 | total += child_size; |
177c0ea7 | 2859 | |
233a4a2c GM |
2860 | if (window_fixed_size_p (c, width_p, 0)) |
2861 | { | |
8b6d9dc9 | 2862 | fixed_size += child_size; |
233a4a2c GM |
2863 | ++nfixed; |
2864 | } | |
2865 | } | |
7ab12479 | 2866 | |
233a4a2c GM |
2867 | /* If the new size is smaller than fixed_size, or if there |
2868 | aren't any resizable windows, allow resizing fixed-size | |
2869 | windows. */ | |
2870 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2871 | ||
6b61353c | 2872 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
2873 | value of extra takes care of rounding errors. */ |
2874 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c KH |
2875 | if (size < total && n > 1) |
2876 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
2877 | resize_fixed_p, *forward, width_p); | |
2878 | else | |
2879 | { | |
2880 | each = (size - total) / n; | |
2881 | extra = (size - total) - n * each; | |
2882 | } | |
233a4a2c GM |
2883 | |
2884 | /* Compute new children heights and edge positions. */ | |
949cf20f | 2885 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 2886 | last_pos = first_pos; |
6b61353c | 2887 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
2888 | { |
2889 | int new_size, old_size; | |
177c0ea7 | 2890 | |
233a4a2c | 2891 | c = XWINDOW (child); |
949cf20f | 2892 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 2893 | new_size = old_size; |
7ab12479 | 2894 | |
233a4a2c GM |
2895 | /* The top or left edge position of this child equals the |
2896 | bottom or right edge of its predecessor. */ | |
2897 | if (width_p) | |
949cf20f | 2898 | c->left_col = make_number (last_pos); |
233a4a2c | 2899 | else |
949cf20f | 2900 | c->top_line = make_number (last_pos); |
7ab12479 | 2901 | |
233a4a2c GM |
2902 | /* If this child can be resized, do it. */ |
2903 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2904 | { | |
6b61353c | 2905 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
2906 | extra = 0; |
2907 | } | |
177c0ea7 | 2908 | |
233a4a2c GM |
2909 | /* Set new height. Note that size_window also propagates |
2910 | edge positions to children, so it's not a no-op if we | |
2911 | didn't change the child's size. */ | |
2912 | size_window (child, new_size, width_p, 1); | |
2913 | ||
2914 | /* Remember the bottom/right edge position of this child; it | |
2915 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 2916 | last_pos += new_size; |
7ab12479 | 2917 | } |
233a4a2c | 2918 | |
6b61353c KH |
2919 | if (new_sizes) xfree (new_sizes); |
2920 | ||
233a4a2c GM |
2921 | /* We should have covered the parent exactly with child windows. */ |
2922 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 2923 | |
7ab12479 | 2924 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2925 | if (!nodelete_p) |
2926 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2927 | { |
233a4a2c GM |
2928 | int child_size; |
2929 | c = XWINDOW (child); | |
949cf20f | 2930 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
192c3131 | 2931 | size_window (child, child_size, width_p, 2); |
7ab12479 JB |
2932 | } |
2933 | } | |
2934 | } | |
2935 | ||
233a4a2c GM |
2936 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2937 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2938 | that become too small in the process. (The caller should check | |
2939 | later and do so if appropriate.) */ | |
7ab12479 | 2940 | |
5e14b1fc | 2941 | void |
233a4a2c | 2942 | set_window_height (window, height, nodelete) |
7ab12479 | 2943 | Lisp_Object window; |
233a4a2c | 2944 | int height; |
7ab12479 JB |
2945 | int nodelete; |
2946 | { | |
233a4a2c GM |
2947 | size_window (window, height, 0, nodelete); |
2948 | } | |
7ab12479 | 2949 | |
7ab12479 | 2950 | |
233a4a2c GM |
2951 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2952 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2953 | that become too small in the process. (The caller should check | |
2954 | later and do so if appropriate.) */ | |
7ab12479 | 2955 | |
233a4a2c GM |
2956 | void |
2957 | set_window_width (window, width, nodelete) | |
2958 | Lisp_Object window; | |
2959 | int width; | |
2960 | int nodelete; | |
2961 | { | |
2962 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2963 | } |
233a4a2c | 2964 | |
cdbc7fec KS |
2965 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
2966 | ||
2967 | void | |
2968 | change_window_heights (window, n) | |
2969 | Lisp_Object window; | |
2970 | int n; | |
2971 | { | |
2972 | struct window *w = XWINDOW (window); | |
2973 | ||
949cf20f KS |
2974 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
2975 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 2976 | |
949cf20f KS |
2977 | if (INTEGERP (w->orig_top_line)) |
2978 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
2979 | if (INTEGERP (w->orig_total_lines)) | |
2980 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
2981 | |
2982 | /* Handle just the top child in a vertical split. */ | |
2983 | if (!NILP (w->vchild)) | |
2984 | change_window_heights (w->vchild, n); | |
2985 | ||
2986 | /* Adjust all children in a horizontal split. */ | |
2987 | for (window = w->hchild; !NILP (window); window = w->next) | |
2988 | { | |
2989 | w = XWINDOW (window); | |
2990 | change_window_heights (window, n); | |
2991 | } | |
2992 | } | |
2993 | ||
7ab12479 | 2994 | \f |
1d8d96fa | 2995 | int window_select_count; |
7ab12479 | 2996 | |
5b03d3c0 RS |
2997 | Lisp_Object |
2998 | Fset_window_buffer_unwind (obuf) | |
2999 | Lisp_Object obuf; | |
3000 | { | |
3001 | Fset_buffer (obuf); | |
3002 | return Qnil; | |
3003 | } | |
3004 | ||
56613f06 SM |
3005 | EXFUN (Fset_window_fringes, 4); |
3006 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3007 | |
5500c422 GM |
3008 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3009 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3010 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3011 | margins, fringes, and scroll-bar settings of the window are not | |
3012 | reset from the buffer's local settings. */ | |
7ab12479 | 3013 | |
5500c422 | 3014 | void |
949cf20f | 3015 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3016 | Lisp_Object window, buffer; |
949cf20f | 3017 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3018 | { |
3019 | struct window *w = XWINDOW (window); | |
3020 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3021 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3022 | |
3023 | w->buffer = buffer; | |
86e48436 RS |
3024 | |
3025 | if (EQ (window, selected_window)) | |
5500c422 | 3026 | b->last_selected_window = window; |
beb4e312 | 3027 | |
c49a0495 KS |
3028 | /* Let redisplay errors through. */ |
3029 | b->display_error_modiff = 0; | |
3030 | ||
beb4e312 | 3031 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3032 | if (INTEGERP (b->display_count)) |
3033 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3034 | b->display_time = Fcurrent_time (); | |
86e48436 | 3035 | |
d834a2e9 | 3036 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3037 | XSETFASTINT (w->window_end_vpos, 0); |
3038 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3039 | w->window_end_valid = Qnil; |
1c686c99 | 3040 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3041 | w->vscroll = 0; |
5500c422 | 3042 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3043 | set_marker_restricted (w->start, |
5500c422 | 3044 | make_number (b->last_window_start), |
7ab12479 JB |
3045 | buffer); |
3046 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3047 | w->force_start = Qnil; |
d834a2e9 | 3048 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3049 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3050 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3051 | |
3052 | /* We must select BUFFER for running the window-scroll-functions. | |
3053 | If WINDOW is selected, switch permanently. | |
3054 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3055 | if (EQ (window, selected_window)) |
3056 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3057 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3058 | because that might itself be a local variable. */ | |
3059 | else if (window_initialized) | |
3060 | { | |
3061 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3062 | Fset_buffer (buffer); | |
3063 | } | |
3064 | ||
949cf20f KS |
3065 | if (!keep_margins_p) |
3066 | { | |
3067 | /* Set left and right marginal area width etc. from buffer. */ | |
3068 | ||
79fd290e | 3069 | /* This may call adjust_window_margins three times, so |
949cf20f | 3070 | temporarily disable window margins. */ |
6b61353c KH |
3071 | Lisp_Object save_left = w->left_margin_cols; |
3072 | Lisp_Object save_right = w->right_margin_cols; | |
3073 | ||
949cf20f KS |
3074 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3075 | ||
3076 | Fset_window_fringes (window, | |
3077 | b->left_fringe_width, b->right_fringe_width, | |
3078 | b->fringes_outside_margins); | |
3079 | ||
3080 | Fset_window_scroll_bars (window, | |
3081 | b->scroll_bar_width, | |
3082 | b->vertical_scroll_bar_type, Qnil); | |
3083 | ||
6b61353c KH |
3084 | w->left_margin_cols = save_left; |
3085 | w->right_margin_cols = save_right; | |
3086 | ||
949cf20f KS |
3087 | Fset_window_margins (window, |
3088 | b->left_margin_cols, b->right_margin_cols); | |
3089 | } | |
7ab12479 | 3090 | |
5500c422 GM |
3091 | if (run_hooks_p) |
3092 | { | |
3093 | if (! NILP (Vwindow_scroll_functions)) | |
3094 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3095 | Fmarker_position (w->start)); | |
3096 | ||
3097 | if (! NILP (Vwindow_configuration_change_hook) | |
3098 | && ! NILP (Vrun_hooks)) | |
3099 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3100 | } | |
543f5fb1 | 3101 | |
5b03d3c0 | 3102 | unbind_to (count, Qnil); |
5500c422 | 3103 | } |
5b03d3c0 | 3104 | |
5500c422 | 3105 | |
949cf20f | 3106 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3107 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3108 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3109 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3110 | display margins, fringe widths, and scroll bar settings are maintained; |
3111 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3112 | defaults. |
3113 | ||
3114 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3115 | (window, buffer, keep_margins) |
56613f06 | 3116 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3117 | { |
3118 | register Lisp_Object tem; | |
3119 | register struct window *w = decode_window (window); | |
5500c422 | 3120 | |
bed0c171 | 3121 | XSETWINDOW (window, w); |
5500c422 | 3122 | buffer = Fget_buffer (buffer); |
b7826503 | 3123 | CHECK_BUFFER (buffer); |
5500c422 GM |
3124 | |
3125 | if (NILP (XBUFFER (buffer)->name)) | |
3126 | error ("Attempt to display deleted buffer"); | |
3127 | ||
3128 | tem = w->buffer; | |
3129 | if (NILP (tem)) | |
3130 | error ("Window is deleted"); | |
3131 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3132 | is first being set up. */ | |
3133 | { | |
3134 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3135 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3136 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3137 | |
3138 | unshow_buffer (w); | |
3139 | } | |
3140 | ||
949cf20f | 3141 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3142 | return Qnil; |
3143 | } | |
3144 | ||
2d0834cc SM |
3145 | /* Note that selected_window can be nil |
3146 | when this is called from Fset_window_configuration. */ | |
3147 | ||
14d87dc9 | 3148 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3149 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3150 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3151 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3152 | Optional second arg NORECORD non-nil means |
3153 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3154 | |
fdb82f93 PJ |
3155 | Note that the main editor command loop |
3156 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3157 | (window, norecord) |
3158 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3159 | { |
3160 | register struct window *w; | |
719eaeb1 | 3161 | register struct window *ow; |
1ae1a37d | 3162 | struct frame *sf; |
7ab12479 | 3163 | |
b7826503 | 3164 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3165 | |
3166 | w = XWINDOW (window); | |
50e88778 | 3167 | w->frozen_window_start_p = 0; |
7ab12479 | 3168 | |
2a1893f4 SM |
3169 | ++window_select_count; |
3170 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3171 | if (EQ (window, selected_window)) |
3172 | return window; | |
3173 | ||
719eaeb1 GM |
3174 | if (!NILP (selected_window)) |
3175 | { | |
3176 | ow = XWINDOW (selected_window); | |
3177 | if (! NILP (ow->buffer)) | |
3178 | set_marker_both (ow->pointm, ow->buffer, | |
3179 | BUF_PT (XBUFFER (ow->buffer)), | |
3180 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3181 | } | |
7ab12479 JB |
3182 | |
3183 | selected_window = window; | |
1ae1a37d | 3184 | sf = SELECTED_FRAME (); |
d1755117 RS |
3185 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
3186 | { | |
3187 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3188 | /* Use this rather than Fhandle_switch_frame | |
3189 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3190 | move around in the state where a minibuffer in a separate | |
3191 | frame is active. */ | |
3192 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
3193 | } | |
3194 | else | |
1ae1a37d | 3195 | sf->selected_window = window; |
7ab12479 | 3196 | |
14d87dc9 | 3197 | if (NILP (norecord)) |
b7354ddf | 3198 | record_buffer (w->buffer); |
7ab12479 JB |
3199 | Fset_buffer (w->buffer); |
3200 | ||
86e48436 RS |
3201 | XBUFFER (w->buffer)->last_selected_window = window; |
3202 | ||
7ab12479 JB |
3203 | /* Go to the point recorded in the window. |
3204 | This is important when the buffer is in more | |
3205 | than one window. It also matters when | |
3206 | redisplay_window has altered point after scrolling, | |
3207 | because it makes the change only in the window. */ | |
3208 | { | |
3209 | register int new_point = marker_position (w->pointm); | |
3210 | if (new_point < BEGV) | |
3211 | SET_PT (BEGV); | |
a9c95e08 | 3212 | else if (new_point > ZV) |
7ab12479 JB |
3213 | SET_PT (ZV); |
3214 | else | |
3215 | SET_PT (new_point); | |
3216 | } | |
3217 | ||
3218 | windows_or_buffers_changed++; | |
3219 | return window; | |
3220 | } | |
14d87dc9 SM |
3221 | |
3222 | static Lisp_Object | |
3223 | select_window_norecord (window) | |
3224 | Lisp_Object window; | |
3225 | { | |
3226 | return Fselect_window (window, Qt); | |
3227 | } | |
b7354ddf | 3228 | \f |
441a127e RS |
3229 | /* Deiconify the frame containing the window WINDOW, |
3230 | unless it is the selected frame; | |
3231 | then return WINDOW. | |
3232 | ||
3233 | The reason for the exception for the selected frame | |
3234 | is that it seems better not to change the selected frames visibility | |
3235 | merely because of displaying a different buffer in it. | |
3236 | The deiconification is useful when a buffer gets shown in | |
3237 | another frame that you were not using lately. */ | |
d07f802a RS |
3238 | |
3239 | static Lisp_Object | |
3240 | display_buffer_1 (window) | |
3241 | Lisp_Object window; | |
3242 | { | |
1ae1a37d GM |
3243 | Lisp_Object frame = XWINDOW (window)->frame; |
3244 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3245 | |
d07f802a | 3246 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3247 | |
2d0834cc SM |
3248 | if (EQ (frame, selected_frame)) |
3249 | ; /* Assume the selected frame is already visible enough. */ | |
3250 | else if (minibuf_level > 0 | |
3251 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3252 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3253 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3254 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3255 | else | |
60117126 RS |
3256 | { |
3257 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3258 | Fmake_frame_visible (frame); |
37962e60 | 3259 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3260 | Fraise_frame (frame); |
60117126 | 3261 | } |
177c0ea7 | 3262 | |
d07f802a RS |
3263 | return window; |
3264 | } | |
3265 | ||
4628f7a4 | 3266 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 RS |
3267 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
3268 | If the value is t, a frame would be created for that buffer | |
3269 | using the default frame parameters. If the value is a list, | |
3270 | it is a list of frame parameters that would be used | |
3271 | to make a frame for that buffer. | |
3272 | The variables `special-display-buffer-names' | |
3273 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3274 | (buffer_name) |
4628f7a4 EN |
3275 | Lisp_Object buffer_name; |
3276 | { | |
3277 | Lisp_Object tem; | |
3278 | ||
b7826503 | 3279 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3280 | |
3281 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3282 | if (!NILP (tem)) | |
3283 | return Qt; | |
3284 | ||
3285 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3286 | if (!NILP (tem)) | |
3287 | return XCDR (tem); | |
3288 | ||
3289 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3290 | { | |
3291 | Lisp_Object car = XCAR (tem); | |
3292 | if (STRINGP (car) | |
3293 | && fast_string_match (car, buffer_name) >= 0) | |
3294 | return Qt; | |
3295 | else if (CONSP (car) | |
3296 | && STRINGP (XCAR (car)) | |
3297 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3298 | return XCDR (car); |
4628f7a4 EN |
3299 | } |
3300 | return Qnil; | |
177c0ea7 | 3301 | } |
4628f7a4 EN |
3302 | |
3303 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
fdb82f93 PJ |
3304 | doc: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window. |
3305 | See `same-window-buffer-names' and `same-window-regexps'. */) | |
3306 | (buffer_name) | |
4628f7a4 EN |
3307 | Lisp_Object buffer_name; |
3308 | { | |
3309 | Lisp_Object tem; | |
3310 | ||
b7826503 | 3311 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3312 | |
3313 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3314 | if (!NILP (tem)) | |
3315 | return Qt; | |
3316 | ||
3317 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3318 | if (!NILP (tem)) | |
3319 | return Qt; | |
3320 | ||
3321 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3322 | { | |
3323 | Lisp_Object car = XCAR (tem); | |
3324 | if (STRINGP (car) | |
3325 | && fast_string_match (car, buffer_name) >= 0) | |
3326 | return Qt; | |
3327 | else if (CONSP (car) | |
3328 | && STRINGP (XCAR (car)) | |
3329 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3330 | return Qt; | |
3331 | } | |
3332 | return Qnil; | |
3333 | } | |
3334 | ||
fdb82f93 | 3335 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3336 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3337 | "BDisplay buffer: \nP", |
3338 | doc: /* Make BUFFER appear in some window but don't select it. | |
c2755926 LT |
3339 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
3340 | a buffer. | |
fdb82f93 PJ |
3341 | If BUFFER is shown already in some window, just use that one, |
3342 | unless the window is the selected window and the optional second | |
3343 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3344 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3345 | Returns the window displaying BUFFER. | |
079d288f | 3346 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3347 | displaying BUFFER, then simply raise that frame. |
3348 | ||
6b61353c KH |
3349 | The variables `special-display-buffer-names', |
3350 | `special-display-regexps', `same-window-buffer-names', and | |
3351 | `same-window-regexps' customize how certain buffer names are handled. | |
3352 | The latter two take effect only if NOT-THIS-WINDOW is t. | |
fdb82f93 PJ |
3353 | |
3354 | If optional argument FRAME is `visible', search all visible frames. | |
3355 | If FRAME is 0, search all visible and iconified frames. | |
3356 | If FRAME is t, search all frames. | |
3357 | If FRAME is a frame, search only that frame. | |
3358 | If FRAME is nil, search only the selected frame | |
3359 | (actually the last nonminibuffer frame), | |
3360 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3361 | which means search visible and iconified frames. | |
3362 | ||
876e2665 GM |
3363 | If a full-width window on a splittable frame is available to display |
3364 | the buffer, it may be split, subject to the value of the variable | |
3365 | `split-height-threshold'. | |
3366 | ||
fdb82f93 PJ |
3367 | If `even-window-heights' is non-nil, window heights will be evened out |
3368 | if displaying the buffer causes two vertically adjacent windows to be | |
3369 | displayed. */) | |
3370 | (buffer, not_this_window, frame) | |
53f76081 | 3371 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3372 | { |
aee631c2 | 3373 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3374 | struct frame *f; |
7ab12479 | 3375 | |
aee631c2 | 3376 | swp = Qnil; |
7ab12479 | 3377 | buffer = Fget_buffer (buffer); |
b7826503 | 3378 | CHECK_BUFFER (buffer); |
7ab12479 | 3379 | |
265a9e55 | 3380 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3381 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3382 | ||
265a9e55 | 3383 | if (NILP (not_this_window) |
7ab12479 | 3384 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3385 | return display_buffer_1 (selected_window); |
7ab12479 | 3386 | |
855d8627 RS |
3387 | /* See if the user has specified this buffer should appear |
3388 | in the selected window. */ | |
3389 | if (NILP (not_this_window)) | |
3390 | { | |
aee631c2 RS |
3391 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3392 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3393 | { |
3394 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3395 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3396 | } |
855d8627 RS |
3397 | } |
3398 | ||
079d288f | 3399 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3400 | look for a window showing BUFFER on any visible or iconified frame. |
3401 | Otherwise search only the current frame. */ | |
53f76081 RS |
3402 | if (! NILP (frame)) |
3403 | tem = frame; | |
9c3da604 GM |
3404 | else if (pop_up_frames |
3405 | || display_buffer_reuse_frames | |
3406 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3407 | XSETFASTINT (tem, 0); |
3408 | else | |
73dc5198 | 3409 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3410 | |
73dc5198 | 3411 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3412 | if (!NILP (window) |
3413 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3414 | return display_buffer_1 (window); |
7ab12479 | 3415 | |
a90712c2 | 3416 | /* Certain buffer names get special handling. */ |
aee631c2 | 3417 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3418 | { |
4628f7a4 EN |
3419 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3420 | if (EQ (tem, Qt)) | |
a90712c2 | 3421 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3422 | if (CONSP (tem)) |
3423 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3424 | } |
3425 | ||
44fa5b1e JB |
3426 | /* If there are no frames open that have more than a minibuffer, |
3427 | we need to create a new frame. */ | |
3428 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3429 | { |
a90712c2 | 3430 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3431 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3432 | return display_buffer_1 (window); |
7ab12479 | 3433 | } |
7ab12479 | 3434 | |
1ae1a37d | 3435 | f = SELECTED_FRAME (); |
43bad991 | 3436 | if (pop_up_windows |
1ae1a37d | 3437 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3438 | /* If the current frame is a special display frame, |
3439 | don't try to reuse its windows. */ | |
1ae1a37d | 3440 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3441 | { |
12cae7c0 KH |
3442 | Lisp_Object frames; |
3443 | ||
37962e60 | 3444 | frames = Qnil; |
1ae1a37d | 3445 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3446 | XSETFRAME (frames, last_nonminibuf_frame); |
a5731348 | 3447 | /* Don't try to create a window if we would get an error. */ |
7ab12479 JB |
3448 | if (split_height_threshold < window_min_height << 1) |
3449 | split_height_threshold = window_min_height << 1; | |
3450 | ||
cee67da9 RS |
3451 | /* Note that both Fget_largest_window and Fget_lru_window |
3452 | ignore minibuffers and dedicated windows. | |
3453 | This means they can return nil. */ | |
7ab12479 | 3454 | |
cee67da9 RS |
3455 | /* If the frame we would try to split cannot be split, |
3456 | try other frames. */ | |
1ae1a37d | 3457 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3458 | { |
3459 | /* Try visible frames first. */ | |
3460 | window = Fget_largest_window (Qvisible); | |
3461 | /* If that didn't work, try iconified frames. */ | |
3462 | if (NILP (window)) | |
3463 | window = Fget_largest_window (make_number (0)); | |
3464 | if (NILP (window)) | |
3465 | window = Fget_largest_window (Qt); | |
3466 | } | |
3467 | else | |
3468 | window = Fget_largest_window (frames); | |
3469 | ||
92cca945 RS |
3470 | /* If we got a tall enough full-width window that can be split, |
3471 | split it. */ | |
265a9e55 | 3472 | if (!NILP (window) |
92cca945 | 3473 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3474 | && window_height (window) >= split_height_threshold |
111e5992 | 3475 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3476 | window = Fsplit_window (window, Qnil, Qnil); |
3477 | else | |
3478 | { | |
7ab8da68 | 3479 | Lisp_Object upper, other; |
1942f68f | 3480 | |
44fa5b1e | 3481 | window = Fget_lru_window (frames); |
92cca945 RS |
3482 | /* If the LRU window is selected, and big enough, |
3483 | and can be split, split it. */ | |
cee67da9 | 3484 | if (!NILP (window) |
92cca945 | 3485 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3486 | && (EQ (window, selected_window) |
3487 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3488 | && window_height (window) >= window_min_height << 1) |
3489 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 3490 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3491 | |
cee67da9 | 3492 | /* Try visible frames first. */ |
48d9379d RS |
3493 | if (NILP (window)) |
3494 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
3495 | if (NILP (window)) |
3496 | window = Fget_largest_window (Qvisible); | |
3497 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
3498 | if (NILP (window)) |
3499 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
3500 | if (NILP (window)) |
3501 | window = Fget_largest_window (make_number (0)); | |
3502 | /* Try invisible frames. */ | |
48d9379d RS |
3503 | if (NILP (window)) |
3504 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
3505 | if (NILP (window)) |
3506 | window = Fget_largest_window (Qt); | |
3507 | /* As a last resort, make a new frame. */ | |
3508 | if (NILP (window)) | |
3509 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3510 | /* If window appears above or below another, |
3511 | even out their heights. */ | |
7ab8da68 | 3512 | other = upper = Qnil; |
1942f68f | 3513 | if (!NILP (XWINDOW (window)->prev)) |
7ab8da68 | 3514 | other = upper = XWINDOW (window)->prev; |
1942f68f | 3515 | if (!NILP (XWINDOW (window)->next)) |
7ab8da68 | 3516 | other = XWINDOW (window)->next, upper = window; |
1942f68f | 3517 | if (!NILP (other) |
6529ed87 | 3518 | && !NILP (Veven_window_heights) |
1942f68f | 3519 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3520 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3521 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3522 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3523 | { |
949cf20f KS |
3524 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3525 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3526 | enlarge_window (upper, |
949cf20f | 3527 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
f95284d2 | 3528 | 0, 0); |
1942f68f | 3529 | } |
7ab12479 JB |
3530 | } |
3531 | } | |
3532 | else | |
3533 | window = Fget_lru_window (Qnil); | |
3534 | ||
949cf20f | 3535 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3536 | return display_buffer_1 (window); |
7ab12479 JB |
3537 | } |
3538 | ||
6b61353c KH |
3539 | |
3540 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3541 | 0, 1, 0, | |
3542 | doc: /* Force redisplay of all windows. | |
3543 | If optional arg OBJECT is a window, force redisplay of that window only. | |
0cc1039f | 3544 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c KH |
3545 | displaying that buffer. */) |
3546 | (object) | |
3547 | Lisp_Object object; | |
3548 | { | |
3549 | if (NILP (object)) | |
3550 | { | |
3551 | windows_or_buffers_changed++; | |
3552 | update_mode_lines++; | |
3553 | return Qt; | |
3554 | } | |
3555 | ||
3556 | if (WINDOWP (object)) | |
3557 | { | |
3558 | struct window *w = XWINDOW (object); | |
3559 | mark_window_display_accurate (object, 0); | |
3560 | w->update_mode_line = Qt; | |
3561 | if (BUFFERP (w->buffer)) | |
3562 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3563 | ++update_mode_lines; | |
3564 | return Qt; | |
3565 | } | |
0cc1039f | 3566 | |
6b61353c KH |
3567 | if (STRINGP (object)) |
3568 | object = Fget_buffer (object); | |
3569 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3570 | { | |
3571 | /* Walk all windows looking for buffer, and force update | |
3572 | of each of those windows. */ | |
3573 | ||
3574 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3575 | return NILP (object) ? Qnil : Qt; | |
3576 | } | |
3577 | ||
3578 | /* If nothing suitable was found, just return. | |
3579 | We could signal an error, but this feature will typically be used | |
3580 | asynchronously in timers or process sentinels, so we don't. */ | |
3581 | return Qnil; | |
3582 | } | |
3583 | ||
3584 | ||
7ab12479 JB |
3585 | void |
3586 | temp_output_buffer_show (buf) | |
3587 | register Lisp_Object buf; | |
3588 | { | |
3589 | register struct buffer *old = current_buffer; | |
3590 | register Lisp_Object window; | |
3591 | register struct window *w; | |
3592 | ||
bccd3dd1 RS |
3593 | XBUFFER (buf)->directory = current_buffer->directory; |
3594 | ||
7ab12479 | 3595 | Fset_buffer (buf); |
c6367666 | 3596 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3597 | BEGV = BEG; |
3598 | ZV = Z; | |
3599 | SET_PT (BEG); | |
06be4f85 | 3600 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3601 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3602 | #endif |
7ab12479 JB |
3603 | set_buffer_internal (old); |
3604 | ||
3605 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
3606 | call1 (Vtemp_buffer_show_function, buf); | |
3607 | else | |
3608 | { | |
53f76081 | 3609 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3610 | |
1ae1a37d | 3611 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3612 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3613 | Vminibuf_scroll_window = window; |
3614 | w = XWINDOW (window); | |
d834a2e9 | 3615 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3616 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3617 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3618 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3619 | |
beb4e312 | 3620 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3621 | and its buffer current. */ |
2d0834cc SM |
3622 | |
3623 | if (!NILP (Vrun_hooks) | |
3624 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3625 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3626 | { |
2d0834cc SM |
3627 | int count = SPECPDL_INDEX (); |
3628 | Lisp_Object prev_window, prev_buffer; | |
3629 | prev_window = selected_window; | |
3630 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3631 | |
2d0834cc SM |
3632 | /* Select the window that was chosen, for running the hook. |
3633 | Note: Both Fselect_window and select_window_norecord may | |
3634 | set-buffer to the buffer displayed in the window, | |
3635 | so we need to save the current buffer. --stef */ | |
3636 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3637 | record_unwind_protect (select_window_norecord, prev_window); | |
3638 | Fselect_window (window, Qt); | |
3639 | Fset_buffer (w->buffer); | |
3640 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3641 | unbind_to (count, Qnil); | |
2cccc823 RS |
3642 | } |
3643 | } | |
7ab12479 JB |
3644 | } |
3645 | \f | |
dfcf069d | 3646 | static void |
7ab12479 JB |
3647 | make_dummy_parent (window) |
3648 | Lisp_Object window; | |
3649 | { | |
cffec418 | 3650 | Lisp_Object new; |
7ab12479 | 3651 | register struct window *o, *p; |
cffec418 | 3652 | int i; |
7ab12479 | 3653 | |
cffec418 | 3654 | o = XWINDOW (window); |
26605be9 | 3655 | p = allocate_window (); |
cffec418 | 3656 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3657 | ((struct Lisp_Vector *) p)->contents[i] |
3658 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3659 | XSETWINDOW (new, p); |
7ab12479 | 3660 | |
2a1893f4 SM |
3661 | ++sequence_number; |
3662 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3663 | |
3664 | /* Put new into window structure in place of window */ | |
3665 | replace_window (window, new); | |
3666 | ||
3667 | o->next = Qnil; | |
3668 | o->prev = Qnil; | |
3669 | o->vchild = Qnil; | |
3670 | o->hchild = Qnil; | |
3671 | o->parent = new; | |
3672 | ||
3673 | p->start = Qnil; | |
3674 | p->pointm = Qnil; | |
3675 | p->buffer = Qnil; | |
3676 | } | |
3677 | ||
3678 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3679 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3680 | WINDOW defaults to selected one and SIZE to half its size. | |
3681 | If optional third arg HORFLAG is non-nil, split side by side | |
3682 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 3683 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
3684 | Interactively, all arguments are nil. |
3685 | ||
3686 | Returns the newly created window (which is the lower or rightmost one). | |
3687 | The upper or leftmost window is the original one and remains selected. | |
3688 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) | |
fdb82f93 | 3689 | (window, size, horflag) |
77ae0fe3 | 3690 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3691 | { |
3692 | register Lisp_Object new; | |
3693 | register struct window *o, *p; | |
c0807608 | 3694 | FRAME_PTR fo; |
77ae0fe3 | 3695 | register int size_int; |
7ab12479 | 3696 | |
265a9e55 | 3697 | if (NILP (window)) |
7ab12479 JB |
3698 | window = selected_window; |
3699 | else | |
b7826503 | 3700 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3701 | |
3702 | o = XWINDOW (window); | |
c0807608 | 3703 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3704 | |
77ae0fe3 | 3705 | if (NILP (size)) |
7ab12479 | 3706 | { |
265a9e55 | 3707 | if (!NILP (horflag)) |
c0807608 | 3708 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3709 | the usable space in columns by two. |
3710 | We round up, since the left-hand window may include | |
3711 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3712 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3713 | else |
949cf20f | 3714 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3715 | } |
3716 | else | |
3717 | { | |
b7826503 | 3718 | CHECK_NUMBER (size); |
77ae0fe3 | 3719 | size_int = XINT (size); |
7ab12479 JB |
3720 | } |
3721 | ||
3722 | if (MINI_WINDOW_P (o)) | |
3723 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3724 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3725 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3726 | |
a481b3ea | 3727 | check_min_window_sizes (); |
7ab12479 | 3728 | |
265a9e55 | 3729 | if (NILP (horflag)) |
7ab12479 | 3730 | { |
77ae0fe3 KH |
3731 | if (size_int < window_min_height) |
3732 | error ("Window height %d too small (after splitting)", size_int); | |
949cf20f | 3733 | if (size_int + window_min_height > XFASTINT (o->total_lines)) |
37962e60 | 3734 | error ("Window height %d too small (after splitting)", |
949cf20f | 3735 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3736 | if (NILP (o->parent) |
3737 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3738 | { |
3739 | make_dummy_parent (window); | |
3740 | new = o->parent; | |
3741 | XWINDOW (new)->vchild = window; | |
3742 | } | |
3743 | } | |
3744 | else | |
3745 | { | |
77ae0fe3 KH |
3746 | if (size_int < window_min_width) |
3747 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e | 3748 | |
949cf20f | 3749 | if (size_int + window_min_width > XFASTINT (o->total_cols)) |
37962e60 | 3750 | error ("Window width %d too small (after splitting)", |
949cf20f | 3751 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3752 | if (NILP (o->parent) |
3753 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3754 | { |
3755 | make_dummy_parent (window); | |
3756 | new = o->parent; | |
3757 | XWINDOW (new)->hchild = window; | |
3758 | } | |
3759 | } | |
3760 | ||
3761 | /* Now we know that window's parent is a vertical combination | |
3762 | if we are dividing vertically, or a horizontal combination | |
3763 | if we are making side-by-side windows */ | |
3764 | ||
3765 | windows_or_buffers_changed++; | |
c0807608 | 3766 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3767 | new = make_window (); |
3768 | p = XWINDOW (new); | |
3769 | ||
44fa5b1e | 3770 | p->frame = o->frame; |
7ab12479 | 3771 | p->next = o->next; |
265a9e55 | 3772 | if (!NILP (p->next)) |
7ab12479 JB |
3773 | XWINDOW (p->next)->prev = new; |
3774 | p->prev = window; | |
3775 | o->next = new; | |
3776 | p->parent = o->parent; | |
3777 | p->buffer = Qt; | |
5500c422 GM |
3778 | p->window_end_valid = Qnil; |
3779 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3780 | |
949cf20f KS |
3781 | /* Duplicate special geometry settings. */ |
3782 | ||
3783 | p->left_margin_cols = o->left_margin_cols; | |
3784 | p->right_margin_cols = o->right_margin_cols; | |
3785 | p->left_fringe_width = o->left_fringe_width; | |
3786 | p->right_fringe_width = o->right_fringe_width; | |
3787 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3788 | p->scroll_bar_width = o->scroll_bar_width; | |
3789 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3790 | ||
44fa5b1e | 3791 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3792 | |
265a9e55 | 3793 | if (!NILP (horflag)) |
7ab12479 | 3794 | { |
949cf20f KS |
3795 | p->total_lines = o->total_lines; |
3796 | p->top_line = o->top_line; | |
3797 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3798 | XSETFASTINT (o->total_cols, size_int); | |
3799 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3800 | adjust_window_margins (p); | |
3801 | adjust_window_margins (o); | |
7ab12479 JB |
3802 | } |
3803 | else | |
3804 | { | |
949cf20f KS |
3805 | p->left_col = o->left_col; |
3806 | p->total_cols = o->total_cols; | |
3807 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3808 | XSETFASTINT (o->total_lines, size_int); | |
3809 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3810 | } |
3811 | ||
5500c422 GM |
3812 | /* Adjust glyph matrices. */ |
3813 | adjust_glyphs (fo); | |
949cf20f KS |
3814 | |
3815 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3816 | return new; |
3817 | } | |
3818 | \f | |
f95284d2 | 3819 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 3, "p", |
fdb82f93 PJ |
3820 | doc: /* Make current window ARG lines bigger. |
3821 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 RS |
3822 | Interactively, if an argument is not given, make the window one line bigger. |
3823 | ||
3824 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3825 | of the siblings above or to the left of the selected window. Only | |
3826 | siblings to the right or below are changed. */) | |
3827 | (arg, side, preserve_before) | |
3828 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3829 | { |
b7826503 | 3830 | CHECK_NUMBER (arg); |
f95284d2 RS |
3831 | enlarge_window (selected_window, XINT (arg), !NILP (side), |
3832 | !NILP (preserve_before)); | |
543f5fb1 RS |
3833 | |
3834 | if (! NILP (Vwindow_configuration_change_hook)) | |
3835 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3836 | ||
7ab12479 JB |
3837 | return Qnil; |
3838 | } | |
3839 | ||
a5731348 | 3840 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 3, "p", |
fdb82f93 PJ |
3841 | doc: /* Make current window ARG lines smaller. |
3842 | From program, optional second arg non-nil means shrink sideways arg columns. | |
a5731348 SM |
3843 | Interactively, if an argument is not given, make the window one line smaller. |
3844 | ||
3845 | Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size | |
3846 | of the siblings above or to the left of the selected window. Only | |
3847 | siblings to the right or below are changed. */) | |
3848 | (arg, side, preserve_before) | |
3849 | register Lisp_Object arg, side, preserve_before; | |
7ab12479 | 3850 | { |
b7826503 | 3851 | CHECK_NUMBER (arg); |
a5731348 SM |
3852 | enlarge_window (selected_window, -XINT (arg), !NILP (side), |
3853 | !NILP (preserve_before)); | |
543f5fb1 RS |
3854 | |
3855 | if (! NILP (Vwindow_configuration_change_hook)) | |
3856 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3857 | ||
7ab12479 JB |
3858 | return Qnil; |
3859 | } | |
3860 | ||
3861 | int | |
3862 | window_height (window) | |
3863 | Lisp_Object window; | |
3864 | { | |
3865 | register struct window *p = XWINDOW (window); | |
949cf20f | 3866 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3867 | } |
3868 | ||
3869 | int | |
3870 | window_width (window) | |
3871 | Lisp_Object window; | |
3872 | { | |
3873 | register struct window *p = XWINDOW (window); | |
949cf20f | 3874 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3875 | } |
3876 | ||
177c0ea7 | 3877 | |
7ab12479 | 3878 | #define CURBEG(w) \ |
949cf20f | 3879 | *(widthflag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3880 | |
3881 | #define CURSIZE(w) \ | |
949cf20f | 3882 | *(widthflag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 3883 | |
233a4a2c | 3884 | |
f95284d2 | 3885 | /* Enlarge WINDOW by DELTA. WIDTHFLAG non-zero means |
233a4a2c | 3886 | increase its width. Siblings of the selected window are resized to |
f95284d2 RS |
3887 | fulfill the size request. If they become too small in the process, |
3888 | they will be deleted. | |
3889 | ||
3890 | If PRESERVE_BEFORE is nonzero, that means don't alter | |
3891 | the siblings to the left or above WINDOW. */ | |
7ab12479 | 3892 | |
f984d4fc | 3893 | static void |
f95284d2 | 3894 | enlarge_window (window, delta, widthflag, preserve_before) |
86c8e823 | 3895 | Lisp_Object window; |
f95284d2 | 3896 | int delta, widthflag, preserve_before; |
7ab12479 | 3897 | { |
86c8e823 | 3898 | Lisp_Object parent, next, prev; |
233a4a2c | 3899 | struct window *p; |
3578db3c KR |
3900 | Lisp_Object *sizep; |
3901 | int maximum; | |
5e14b1fc AS |
3902 | int (*sizefun) P_ ((Lisp_Object)) |
3903 | = widthflag ? window_width : window_height; | |
233a4a2c | 3904 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3905 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3906 | |
233a4a2c GM |
3907 | /* Check values of window_min_width and window_min_height for |
3908 | validity. */ | |
a481b3ea | 3909 | check_min_window_sizes (); |
7ab12479 | 3910 | |
233a4a2c | 3911 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3912 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3913 | error ("Window is not resizable"); | |
3914 | ||
3915 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3916 | while (1) |
3917 | { | |
3918 | p = XWINDOW (window); | |
3919 | parent = p->parent; | |
177c0ea7 | 3920 | |
265a9e55 | 3921 | if (NILP (parent)) |
7ab12479 JB |
3922 | { |
3923 | if (widthflag) | |
3924 | error ("No other window to side of this one"); | |
3925 | break; | |
3926 | } | |
177c0ea7 | 3927 | |
233a4a2c GM |
3928 | if (widthflag |
3929 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3930 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3931 | break; |
177c0ea7 | 3932 | |
7ab12479 JB |
3933 | window = parent; |
3934 | } | |
3935 | ||
05c2896a | 3936 | sizep = &CURSIZE (window); |
7ab12479 | 3937 | |
7ab12479 JB |
3938 | { |
3939 | register int maxdelta; | |
7ab12479 | 3940 | |
f95284d2 RS |
3941 | /* Compute the maximum size increment this window can have. */ |
3942 | ||
3943 | if (preserve_before) | |
3944 | { | |
3945 | if (!NILP (parent)) | |
3946 | { | |
3947 | maxdelta = (*sizefun) (parent) - XINT (*sizep); | |
3948 | /* Subtract size of siblings before, since we can't take that. */ | |
1ab964d7 | 3949 | maxdelta -= XINT (CURBEG (window)) - XINT (CURBEG (parent)); |
f95284d2 RS |
3950 | } |
3951 | else | |
3952 | maxdelta = (!NILP (p->next) ? ((*sizefun) (p->next) | |
3953 | - window_min_size (XWINDOW (p->next), | |
3954 | widthflag, 0, 0)) | |
3955 | : (delta = 0)); | |
3956 | } | |
3957 | else | |
3958 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) | |
3959 | /* This is a main window followed by a minibuffer. */ | |
3960 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
3961 | - window_min_size (XWINDOW (p->next), | |
3962 | widthflag, 0, 0)) | |
3963 | /* This is a minibuffer following a main window. */ | |
3964 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
3965 | - window_min_size (XWINDOW (p->prev), | |
3966 | widthflag, 0, 0)) | |
3967 | /* This is a frame with only one window, a minibuffer-only | |
3968 | or a minibufferless frame. */ | |
3969 | : (delta = 0)); | |
7ab12479 JB |
3970 | |
3971 | if (delta > maxdelta) | |
3972 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3973 | the full frame, or make the only window aside from the |
3974 | minibuffer the full frame. */ | |
7ab12479 | 3975 | delta = maxdelta; |
6b54027b | 3976 | } |
d5783c40 | 3977 | |
3578db3c | 3978 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3979 | { |
543f5fb1 | 3980 | delete_window (window); |
d5783c40 | 3981 | return; |
6b54027b RS |
3982 | } |
3983 | ||
3984 | if (delta == 0) | |
3985 | return; | |
7ab12479 | 3986 | |
f95284d2 | 3987 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
3988 | maximum = 0; |
3989 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3990 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3991 | widthflag, 0, 0); |
f95284d2 RS |
3992 | if (! preserve_before) |
3993 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
3994 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
3995 | widthflag, 0, 0); | |
db98a733 | 3996 | |
f95284d2 | 3997 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 3998 | if (delta <= maximum) |
7ab12479 | 3999 | { |
db98a733 RS |
4000 | Lisp_Object first_unaffected; |
4001 | Lisp_Object first_affected; | |
233a4a2c | 4002 | int fixed_p; |
db98a733 RS |
4003 | |
4004 | next = p->next; | |
4005 | prev = p->prev; | |
4006 | first_affected = window; | |
4007 | /* Look at one sibling at a time, | |
4008 | moving away from this window in both directions alternately, | |
4009 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 RS |
4010 | while (delta != 0 |
4011 | && (!NILP (next) || (!preserve_before && !NILP (prev)))) | |
db98a733 | 4012 | { |
db98a733 RS |
4013 | if (! NILP (next)) |
4014 | { | |
c1636aa6 | 4015 | int this_one = ((*sizefun) (next) |
233a4a2c | 4016 | - window_min_size (XWINDOW (next), |
f984d4fc | 4017 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
4018 | if (!fixed_p) |
4019 | { | |
4020 | if (this_one > delta) | |
4021 | this_one = delta; | |
177c0ea7 | 4022 | |
233a4a2c | 4023 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4024 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4025 | |
233a4a2c GM |
4026 | delta -= this_one; |
4027 | } | |
177c0ea7 | 4028 | |
db98a733 RS |
4029 | next = XWINDOW (next)->next; |
4030 | } | |
177c0ea7 | 4031 | |
db98a733 RS |
4032 | if (delta == 0) |
4033 | break; | |
177c0ea7 | 4034 | |
f95284d2 | 4035 | if (!preserve_before && ! NILP (prev)) |
db98a733 | 4036 | { |
c1636aa6 | 4037 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4038 | - window_min_size (XWINDOW (prev), |
f984d4fc | 4039 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
4040 | if (!fixed_p) |
4041 | { | |
4042 | if (this_one > delta) | |
4043 | this_one = delta; | |
177c0ea7 | 4044 | |
233a4a2c | 4045 | first_affected = prev; |
177c0ea7 | 4046 | |
233a4a2c | 4047 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4048 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4049 | |
4050 | delta -= this_one; | |
4051 | } | |
177c0ea7 | 4052 | |
db98a733 RS |
4053 | prev = XWINDOW (prev)->prev; |
4054 | } | |
4055 | } | |
4056 | ||
233a4a2c GM |
4057 | xassert (delta == 0); |
4058 | ||
db98a733 RS |
4059 | /* Now recalculate the edge positions of all the windows affected, |
4060 | based on the new sizes. */ | |
4061 | first_unaffected = next; | |
4062 | prev = first_affected; | |
4063 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4064 | prev = next, next = XWINDOW (next)->next) | |
4065 | { | |
3578db3c | 4066 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4067 | /* This does not change size of NEXT, |
4068 | but it propagates the new top edge to its children */ | |
4069 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4070 | } | |
7ab12479 JB |
4071 | } |
4072 | else | |
4073 | { | |
4074 | register int delta1; | |
4075 | register int opht = (*sizefun) (parent); | |
4076 | ||
3578db3c | 4077 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4078 | { |
4079 | /* If trying to grow this window to or beyond size of the parent, | |
4080 | just delete all the sibling windows. */ | |
dc1ab1ee | 4081 | Lisp_Object start, tem, next; |
daf516d3 | 4082 | |
dc1ab1ee RS |
4083 | start = XWINDOW (parent)->vchild; |
4084 | if (NILP (start)) | |
4085 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4086 | |
dc1ab1ee RS |
4087 | /* Delete any siblings that come after WINDOW. */ |
4088 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4089 | while (! NILP (tem)) |
4090 | { | |
4091 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4092 | delete_window (tem); |
4093 | tem = next; | |
4094 | } | |
4095 | ||
4096 | /* Delete any siblings that come after WINDOW. | |
4097 | Note that if START is not WINDOW, then WINDOW still | |
4098 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4099 | tem = start; | |
4100 | while (! EQ (tem, window)) | |
4101 | { | |
4102 | next = XWINDOW (tem)->next; | |
4103 | delete_window (tem); | |
daf516d3 RS |
4104 | tem = next; |
4105 | } | |
4106 | } | |
7ab12479 | 4107 | else |
233a4a2c GM |
4108 | { |
4109 | /* Otherwise, make delta1 just right so that if we add | |
4110 | delta1 lines to this window and to the parent, and then | |
4111 | shrink the parent back to its original size, the new | |
4112 | proportional size of this window will increase by delta. | |
4113 | ||
4114 | The function size_window will compute the new height h' | |
4115 | of the window from delta1 as: | |
177c0ea7 | 4116 | |
233a4a2c GM |
4117 | e = delta1/n |
4118 | x = delta1 - delta1/n * n for the 1st resizable child | |
4119 | h' = h + e + x | |
4120 | ||
4121 | where n is the number of children that can be resized. | |
4122 | We can ignore x by choosing a delta1 that is a multiple of | |
4123 | n. We want the height of this window to come out as | |
177c0ea7 | 4124 | |
233a4a2c GM |
4125 | h' = h + delta |
4126 | ||
4127 | So, delta1 must be | |
177c0ea7 | 4128 | |
233a4a2c GM |
4129 | h + e = h + delta |
4130 | delta1/n = delta | |
4131 | delta1 = n * delta. | |
4132 | ||
a5731348 | 4133 | The number of children n equals the number of resizable |
233a4a2c GM |
4134 | children of this window + 1 because we know window itself |
4135 | is resizable (otherwise we would have signalled an error. */ | |
4136 | ||
4137 | struct window *w = XWINDOW (window); | |
4138 | Lisp_Object s; | |
4139 | int n = 1; | |
4140 | ||
4141 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
4142 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
4143 | ++n; | |
4144 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
4145 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
4146 | ++n; | |
4147 | ||
4148 | delta1 = n * delta; | |
7ab12479 | 4149 | |
daf516d3 RS |
4150 | /* Add delta1 lines or columns to this window, and to the parent, |
4151 | keeping things consistent while not affecting siblings. */ | |
4152 | XSETINT (CURSIZE (parent), opht + delta1); | |
4153 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4154 | ||
4155 | /* Squeeze out delta1 lines or columns from our parent, | |
4156 | shriking this window and siblings proportionately. | |
4157 | This brings parent back to correct size. | |
4158 | Delta1 was calculated so this makes this window the desired size, | |
4159 | taking it all out of the siblings. */ | |
4160 | (*setsizefun) (parent, opht, 0); | |
4161 | ||
4162 | } | |
7ab12479 JB |
4163 | } |
4164 | ||
d834a2e9 | 4165 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4166 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4167 | |
4168 | /* Adjust glyph matrices. */ | |
4169 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4170 | } |
c1636aa6 | 4171 | |
7ab12479 JB |
4172 | #undef CURBEG |
4173 | #undef CURSIZE | |
4174 | ||
5500c422 | 4175 | |
f984d4fc GM |
4176 | \f |
4177 | /*********************************************************************** | |
4178 | Resizing Mini-Windows | |
4179 | ***********************************************************************/ | |
4180 | ||
4181 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4182 | |
43b4a21f GM |
4183 | enum save_restore_action |
4184 | { | |
4185 | CHECK_ORIG_SIZES, | |
4186 | SAVE_ORIG_SIZES, | |
4187 | RESTORE_ORIG_SIZES | |
4188 | }; | |
4189 | ||
177c0ea7 | 4190 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4191 | enum save_restore_action)); |
f984d4fc GM |
4192 | |
4193 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4194 | from lowest windows first. */ | |
4195 | ||
4196 | static void | |
4197 | shrink_window_lowest_first (w, height) | |
4198 | struct window *w; | |
4199 | int height; | |
4200 | { | |
4201 | struct window *c; | |
4202 | Lisp_Object child; | |
4203 | int old_height; | |
4204 | ||
4205 | xassert (!MINI_WINDOW_P (w)); | |
4206 | ||
4207 | /* Set redisplay hints. */ | |
4208 | XSETFASTINT (w->last_modified, 0); | |
4209 | XSETFASTINT (w->last_overlay_modified, 0); | |
4210 | windows_or_buffers_changed++; | |
4211 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4212 | ||
949cf20f KS |
4213 | old_height = XFASTINT (w->total_lines); |
4214 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4215 | |
4216 | if (!NILP (w->hchild)) | |
4217 | { | |
4218 | for (child = w->hchild; !NILP (child); child = c->next) | |
4219 | { | |
4220 | c = XWINDOW (child); | |
949cf20f | 4221 | c->top_line = w->top_line; |
f984d4fc GM |
4222 | shrink_window_lowest_first (c, height); |
4223 | } | |
4224 | } | |
4225 | else if (!NILP (w->vchild)) | |
4226 | { | |
4227 | Lisp_Object last_child; | |
4228 | int delta = old_height - height; | |
4229 | int last_top; | |
6bbd7a29 GM |
4230 | |
4231 | last_child = Qnil; | |
177c0ea7 | 4232 | |
f984d4fc GM |
4233 | /* Find the last child. We are taking space from lowest windows |
4234 | first, so we iterate over children from the last child | |
4235 | backwards. */ | |
4236 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
4237 | last_child = child; | |
4238 | ||
4239 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4240 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4241 | { | |
4242 | int this_one; | |
177c0ea7 | 4243 | |
f984d4fc | 4244 | c = XWINDOW (child); |
949cf20f | 4245 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4246 | |
4247 | if (this_one > delta) | |
4248 | this_one = delta; | |
4249 | ||
949cf20f | 4250 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4251 | delta -= this_one; |
4252 | } | |
4253 | ||
4254 | /* Compute new positions. */ | |
949cf20f | 4255 | last_top = XINT (w->top_line); |
f984d4fc GM |
4256 | for (child = w->vchild; !NILP (child); child = c->next) |
4257 | { | |
4258 | c = XWINDOW (child); | |
949cf20f KS |
4259 | c->top_line = make_number (last_top); |
4260 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4261 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4262 | } |
4263 | } | |
4264 | } | |
4265 | ||
4266 | ||
43b4a21f GM |
4267 | /* Save, restore, or check positions and sizes in the window tree |
4268 | rooted at W. ACTION says what to do. | |
f984d4fc | 4269 | |
949cf20f KS |
4270 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4271 | orig_total_lines members are valid for all windows in the window | |
4272 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4273 | |
43b4a21f | 4274 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4275 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4276 | |
949cf20f KS |
4277 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4278 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4279 | |
4280 | static int | |
4281 | save_restore_orig_size (w, action) | |
f984d4fc | 4282 | struct window *w; |
43b4a21f | 4283 | enum save_restore_action action; |
f984d4fc | 4284 | { |
43b4a21f GM |
4285 | int success_p = 1; |
4286 | ||
f984d4fc GM |
4287 | while (w) |
4288 | { | |
4289 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4290 | { |
4291 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4292 | success_p = 0; | |
4293 | } | |
f984d4fc | 4294 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4295 | { |
4296 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4297 | success_p = 0; | |
4298 | } | |
177c0ea7 | 4299 | |
43b4a21f | 4300 | switch (action) |
f984d4fc | 4301 | { |
43b4a21f | 4302 | case CHECK_ORIG_SIZES: |
949cf20f | 4303 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4304 | return 0; |
4305 | break; | |
4306 | ||
4307 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4308 | w->orig_top_line = w->top_line; |
4309 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4310 | XSETFASTINT (w->last_modified, 0); |
4311 | XSETFASTINT (w->last_overlay_modified, 0); | |
4312 | break; | |
4313 | ||
4314 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4315 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4316 | w->top_line = w->orig_top_line; | |
4317 | w->total_lines = w->orig_total_lines; | |
4318 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4319 | XSETFASTINT (w->last_modified, 0); |
4320 | XSETFASTINT (w->last_overlay_modified, 0); | |
4321 | break; | |
4322 | ||
4323 | default: | |
4324 | abort (); | |
f984d4fc | 4325 | } |
43b4a21f | 4326 | |
f984d4fc GM |
4327 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4328 | } | |
43b4a21f GM |
4329 | |
4330 | return success_p; | |
f984d4fc GM |
4331 | } |
4332 | ||
4333 | ||
4334 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4335 | without deleting other windows. */ | |
4336 | ||
4337 | void | |
4338 | grow_mini_window (w, delta) | |
4339 | struct window *w; | |
4340 | int delta; | |
4341 | { | |
4342 | struct frame *f = XFRAME (w->frame); | |
4343 | struct window *root; | |
177c0ea7 | 4344 | |
f984d4fc GM |
4345 | xassert (MINI_WINDOW_P (w)); |
4346 | xassert (delta >= 0); | |
177c0ea7 | 4347 | |
f984d4fc GM |
4348 | /* Check values of window_min_width and window_min_height for |
4349 | validity. */ | |
4350 | check_min_window_sizes (); | |
4351 | ||
4352 | /* Compute how much we can enlarge the mini-window without deleting | |
4353 | other windows. */ | |
4354 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4355 | if (delta) | |
4356 | { | |
4357 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4358 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4359 | /* Note that the root window may already be smaller than |
eafa3196 | 4360 | min_height. */ |
949cf20f | 4361 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4362 | } |
177c0ea7 | 4363 | |
f984d4fc GM |
4364 | if (delta) |
4365 | { | |
4366 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4367 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4368 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4369 | |
4370 | /* Shrink other windows. */ | |
949cf20f | 4371 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4372 | |
4373 | /* Grow the mini-window. */ | |
949cf20f KS |
4374 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4375 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4376 | XSETFASTINT (w->last_modified, 0); |
4377 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4378 | |
f984d4fc GM |
4379 | adjust_glyphs (f); |
4380 | } | |
4381 | } | |
4382 | ||
4383 | ||
86c8e823 GM |
4384 | /* Shrink mini-window W. If there is recorded info about window sizes |
4385 | before a call to grow_mini_window, restore recorded window sizes. | |
4386 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4387 | line. */ | |
f984d4fc GM |
4388 | |
4389 | void | |
4390 | shrink_mini_window (w) | |
4391 | struct window *w; | |
4392 | { | |
4393 | struct frame *f = XFRAME (w->frame); | |
4394 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4395 | ||
43b4a21f | 4396 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4397 | { |
43b4a21f | 4398 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4399 | adjust_glyphs (f); |
4400 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4401 | windows_or_buffers_changed = 1; | |
4402 | } | |
949cf20f | 4403 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4404 | { |
0130fe1a GM |
4405 | /* Distribute the additional lines of the mini-window |
4406 | among the other windows. */ | |
86c8e823 GM |
4407 | Lisp_Object window; |
4408 | XSETWINDOW (window, w); | |
949cf20f | 4409 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0, 0); |
86c8e823 | 4410 | } |
f984d4fc GM |
4411 | } |
4412 | ||
4413 | ||
4414 | \f | |
5500c422 GM |
4415 | /* Mark window cursors off for all windows in the window tree rooted |
4416 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4417 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4418 | the frame are cleared. */ | |
4419 | ||
4420 | void | |
4421 | mark_window_cursors_off (w) | |
4422 | struct window *w; | |
4423 | { | |
4424 | while (w) | |
4425 | { | |
4426 | if (!NILP (w->hchild)) | |
4427 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4428 | else if (!NILP (w->vchild)) | |
4429 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4430 | else | |
4431 | w->phys_cursor_on_p = 0; | |
4432 | ||
4433 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4434 | } | |
4435 | } | |
4436 | ||
4437 | ||
e9c195b1 | 4438 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4439 | |
4440 | int | |
4441 | window_internal_height (w) | |
4442 | struct window *w; | |
4443 | { | |
949cf20f | 4444 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4445 | |
e9c195b1 GM |
4446 | if (!MINI_WINDOW_P (w)) |
4447 | { | |
4448 | if (!NILP (w->parent) | |
4449 | || !NILP (w->vchild) | |
4450 | || !NILP (w->hchild) | |
4451 | || !NILP (w->next) | |
4452 | || !NILP (w->prev) | |
4453 | || WINDOW_WANTS_MODELINE_P (w)) | |
4454 | --ht; | |
7ab12479 | 4455 | |
e9c195b1 GM |
4456 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4457 | --ht; | |
4458 | } | |
7ab12479 JB |
4459 | |
4460 | return ht; | |
4461 | } | |
4462 | ||
535e0b8e JB |
4463 | |
4464 | /* Return the number of columns in W. | |
a3c87d4e | 4465 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4466 | separating W from the sibling to its right. */ |
5500c422 | 4467 | |
535e0b8e | 4468 | int |
949cf20f | 4469 | window_box_text_cols (w) |
535e0b8e JB |
4470 | struct window *w; |
4471 | { | |
5500c422 | 4472 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4473 | int width = XINT (w->total_cols); |
535e0b8e | 4474 | |
949cf20f | 4475 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4476 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4477 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4478 | else if (!FRAME_WINDOW_P (f) | |
4479 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4480 | /* The column of `|' characters separating side-by-side windows |
4481 | occupies one column only. */ | |
4482 | width -= 1; | |
4483 | ||
5500c422 | 4484 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4485 | /* On window-systems, fringes and display margins cannot be |
4486 | used for normal text. */ | |
4487 | width -= (WINDOW_FRINGE_COLS (w) | |
4488 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4489 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4490 | |
4491 | return width; | |
535e0b8e JB |
4492 | } |
4493 | ||
5500c422 GM |
4494 | \f |
4495 | /************************************************************************ | |
4496 | Window Scrolling | |
4497 | ***********************************************************************/ | |
535e0b8e | 4498 | |
5500c422 | 4499 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4500 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4501 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4502 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4503 | means don't signal an error if we try to move over BEGV or ZV, | |
4504 | respectively. */ | |
7ab12479 | 4505 | |
101d1605 RS |
4506 | static void |
4507 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4508 | Lisp_Object window; |
4509 | int n; | |
101d1605 | 4510 | int whole; |
f8026fd8 | 4511 | int noerror; |
5500c422 | 4512 | { |
cba59f77 RS |
4513 | immediate_quit = 1; |
4514 | ||
5500c422 GM |
4515 | /* If we must, use the pixel-based version which is much slower than |
4516 | the line-based one but can handle varying line heights. */ | |
4517 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4518 | window_scroll_pixel_based (window, n, whole, noerror); | |
4519 | else | |
4520 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4521 | |
4522 | immediate_quit = 0; | |
5500c422 GM |
4523 | } |
4524 | ||
4525 | ||
4526 | /* Implementation of window_scroll that works based on pixel line | |
4527 | heights. See the comment of window_scroll for parameter | |
4528 | descriptions. */ | |
4529 | ||
4530 | static void | |
4531 | window_scroll_pixel_based (window, n, whole, noerror) | |
4532 | Lisp_Object window; | |
4533 | int n; | |
4534 | int whole; | |
4535 | int noerror; | |
4536 | { | |
4537 | struct it it; | |
4538 | struct window *w = XWINDOW (window); | |
4539 | struct text_pos start; | |
4540 | Lisp_Object tem; | |
4541 | int this_scroll_margin; | |
4542 | int preserve_y; | |
5cdb3cf3 MB |
4543 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4544 | int vscrolled = 0; | |
5500c422 GM |
4545 | |
4546 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4547 | |
5500c422 | 4548 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4549 | the screen. Allow PT to be partially visible, otherwise |
4550 | something like (scroll-down 1) with PT in the line before | |
4551 | the partially visible one would recenter. */ | |
4552 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
4553 | if (NILP (tem)) |
4554 | { | |
4555 | /* Move backward half the height of the window. Performance note: | |
4556 | vmotion used here is about 10% faster, but would give wrong | |
4557 | results for variable height lines. */ | |
4558 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4559 | it.current_y = it.last_visible_y; | |
f204989e | 4560 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4561 | |
5500c422 GM |
4562 | /* The function move_iterator_vertically may move over more than |
4563 | the specified y-distance. If it->w is small, e.g. a | |
4564 | mini-buffer window, we may end up in front of the window's | |
4565 | display area. This is the case when Start displaying at the | |
4566 | start of the line containing PT in this case. */ | |
4567 | if (it.current_y <= 0) | |
4568 | { | |
4569 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4570 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4571 | it.current_y = 0; |
4572 | } | |
4573 | ||
4574 | start = it.current.pos; | |
4575 | } | |
e56263e5 KS |
4576 | else if (auto_window_vscroll_p) |
4577 | { | |
5b1ba1e3 | 4578 | if (tem = XCAR (XCDR (XCDR (tem))), CONSP (tem)) |
e56263e5 KS |
4579 | { |
4580 | int px; | |
4581 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4582 | if (whole) | |
e856c216 KS |
4583 | dy = max ((window_box_height (w) |
4584 | - next_screen_context_lines * dy), | |
4585 | dy); | |
e56263e5 KS |
4586 | dy *= n; |
4587 | ||
5b1ba1e3 | 4588 | if (n < 0 && (px = XINT (XCAR (tem))) > 0) |
e56263e5 KS |
4589 | { |
4590 | px = max (0, -w->vscroll - min (px, -dy)); | |
4591 | Fset_window_vscroll (window, make_number (px), Qt); | |
4592 | return; | |
4593 | } | |
5b1ba1e3 | 4594 | if (n > 0 && (px = XINT (XCDR (tem))) > 0) |
e56263e5 KS |
4595 | { |
4596 | px = max (0, -w->vscroll + min (px, dy)); | |
4597 | Fset_window_vscroll (window, make_number (px), Qt); | |
4598 | return; | |
4599 | } | |
4600 | } | |
4601 | Fset_window_vscroll (window, make_number (0), Qt); | |
4602 | } | |
5500c422 | 4603 | |
d0c38d63 | 4604 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4605 | point in the same window line as it is now, so get that line. */ |
4606 | if (!NILP (Vscroll_preserve_screen_position)) | |
4607 | { | |
4608 | start_display (&it, w, start); | |
4609 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4610 | preserve_y = it.current_y; | |
4611 | } | |
4612 | else | |
4613 | preserve_y = -1; | |
4614 | ||
4615 | /* Move iterator it from start the specified distance forward or | |
4616 | backward. The result is the new window start. */ | |
4617 | start_display (&it, w, start); | |
4618 | if (whole) | |
4619 | { | |
e856c216 KS |
4620 | int start_pos = IT_CHARPOS (it); |
4621 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4622 | dy = max ((window_box_height (w) | |
4623 | - next_screen_context_lines * dy), | |
4624 | dy) * n; | |
d72340d4 GM |
4625 | |
4626 | /* Note that move_it_vertically always moves the iterator to the | |
4627 | start of a line. So, if the last line doesn't have a newline, | |
4628 | we would end up at the start of the line ending at ZV. */ | |
4629 | if (dy <= 0) | |
e856c216 KS |
4630 | { |
4631 | move_it_vertically_backward (&it, -dy); | |
4632 | /* Ensure we actually does move, e.g. in case we are currently | |
4633 | looking at an image that is taller that the window height. */ | |
4634 | while (start_pos == IT_CHARPOS (it) | |
4635 | && start_pos > BEGV) | |
4636 | move_it_by_lines (&it, -1, 1); | |
4637 | } | |
d72340d4 | 4638 | else if (dy > 0) |
bed83ee4 | 4639 | { |
bed83ee4 KS |
4640 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4641 | MOVE_TO_POS | MOVE_TO_Y); | |
4642 | /* Ensure we actually does move, e.g. in case we are currently | |
4643 | looking at an image that is taller that the window height. */ | |
4644 | while (start_pos == IT_CHARPOS (it) | |
4645 | && start_pos < ZV) | |
4646 | move_it_by_lines (&it, 1, 1); | |
4647 | } | |
5500c422 GM |
4648 | } |
4649 | else | |
4650 | move_it_by_lines (&it, n, 1); | |
4651 | ||
96ae58c8 RS |
4652 | /* We failed if we find ZV is already on the screen (scrolling up, |
4653 | means there's nothing past the end), or if we can't start any | |
4654 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4655 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4656 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4657 | { |
5cdb3cf3 MB |
4658 | if (IT_CHARPOS (it) == ZV) |
4659 | { | |
07ce8b53 RS |
4660 | if (it.current_y < it.last_visible_y |
4661 | && (it.current_y + it.max_ascent + it.max_descent | |
4662 | >= it.last_visible_y)) | |
a74eca50 GM |
4663 | { |
4664 | /* The last line was only partially visible, make it fully | |
4665 | visible. */ | |
4666 | w->vscroll = (it.last_visible_y | |
4667 | - it.current_y + it.max_ascent + it.max_descent); | |
4668 | adjust_glyphs (it.f); | |
4669 | } | |
5cdb3cf3 MB |
4670 | else if (noerror) |
4671 | return; | |
4672 | else | |
4673 | Fsignal (Qend_of_buffer, Qnil); | |
4674 | } | |
5500c422 | 4675 | else |
5cdb3cf3 MB |
4676 | { |
4677 | if (w->vscroll != 0) | |
4678 | /* The first line was only partially visible, make it fully | |
4679 | visible. */ | |
4680 | w->vscroll = 0; | |
4681 | else if (noerror) | |
4682 | return; | |
4683 | else | |
4684 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4685 | } | |
4686 | ||
4687 | /* If control gets here, then we vscrolled. */ | |
4688 | ||
4689 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4690 | ||
4691 | /* Don't try to change the window start below. */ | |
4692 | vscrolled = 1; | |
5500c422 GM |
4693 | } |
4694 | ||
5cdb3cf3 MB |
4695 | if (! vscrolled) |
4696 | { | |
dad67609 RS |
4697 | int pos = IT_CHARPOS (it); |
4698 | int bytepos; | |
e68def1e AS |
4699 | |
4700 | /* If in the middle of a multi-glyph character move forward to | |
4701 | the next character. */ | |
4702 | if (in_display_vector_p (&it)) | |
4703 | { | |
4704 | ++pos; | |
4705 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4706 | } | |
4707 | ||
5cdb3cf3 | 4708 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4709 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4710 | w->buffer); |
dad67609 RS |
4711 | bytepos = XMARKER (w->start)->bytepos; |
4712 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4713 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4714 | w->update_mode_line = Qt; |
4715 | XSETFASTINT (w->last_modified, 0); | |
4716 | XSETFASTINT (w->last_overlay_modified, 0); | |
4717 | /* Set force_start so that redisplay_window will run the | |
4718 | window-scroll-functions. */ | |
4719 | w->force_start = Qt; | |
4720 | } | |
177c0ea7 | 4721 | |
dc297565 RS |
4722 | /* The rest of this function uses current_y in a nonstandard way, |
4723 | not including the height of the header line if any. */ | |
5500c422 | 4724 | it.current_y = it.vpos = 0; |
177c0ea7 | 4725 | |
940f53e5 RS |
4726 | /* Move PT out of scroll margins. |
4727 | This code wants current_y to be zero at the window start position | |
4728 | even if there is a header line. */ | |
4729 | this_scroll_margin = max (0, scroll_margin); | |
4730 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4731 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4732 | ||
4733 | if (n > 0) | |
5500c422 | 4734 | { |
940f53e5 RS |
4735 | /* We moved the window start towards ZV, so PT may be now |
4736 | in the scroll margin at the top. */ | |
4737 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
4738 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin) | |
4739 | /* We found PT at a legitimate height. Leave it alone. */ | |
4740 | ; | |
4741 | else if (preserve_y >= 0) | |
4742 | { | |
fa3c3426 RS |
4743 | /* If we have a header line, take account of it. |
4744 | This is necessary because we set it.current_y to 0, above. */ | |
940f53e5 RS |
4745 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4746 | preserve_y -= CURRENT_HEADER_LINE_HEIGHT (w); | |
dc297565 | 4747 | |
940f53e5 RS |
4748 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); |
4749 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4750 | } | |
4751 | else | |
5500c422 | 4752 | { |
5500c422 | 4753 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4754 | { |
4755 | int prev = it.current_y; | |
4756 | move_it_by_lines (&it, 1, 1); | |
4757 | if (prev == it.current_y) | |
4758 | break; | |
4759 | } | |
5500c422 GM |
4760 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4761 | } | |
940f53e5 RS |
4762 | } |
4763 | else if (n < 0) | |
4764 | { | |
4765 | int charpos, bytepos; | |
aed328bf | 4766 | int partial_p; |
940f53e5 RS |
4767 | |
4768 | /* Save our position, for the preserve_y case. */ | |
4769 | charpos = IT_CHARPOS (it); | |
4770 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4771 | |
940f53e5 RS |
4772 | /* We moved the window start towards BEGV, so PT may be now |
4773 | in the scroll margin at the bottom. */ | |
4774 | move_it_to (&it, PT, -1, | |
4775 | it.last_visible_y - this_scroll_margin - 1, -1, | |
4776 | MOVE_TO_POS | MOVE_TO_Y); | |
4777 | ||
aed328bf KS |
4778 | /* Save our position, in case it's correct. */ |
4779 | charpos = IT_CHARPOS (it); | |
4780 | bytepos = IT_BYTEPOS (it); | |
4781 | ||
4782 | /* See if point is on a partially visible line at the end. */ | |
4783 | if (it.what == IT_EOB) | |
4784 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4785 | else | |
4786 | { | |
4787 | move_it_by_lines (&it, 1, 1); | |
4788 | partial_p = it.current_y > it.last_visible_y; | |
4789 | } | |
4790 | ||
4791 | if (charpos == PT && !partial_p) | |
940f53e5 RS |
4792 | /* We found PT before we found the display margin, so PT is ok. */ |
4793 | ; | |
4794 | else if (preserve_y >= 0) | |
4795 | { | |
4796 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4797 | start_display (&it, w, start); | |
fa3c3426 RS |
4798 | #if 0 /* It's wrong to subtract this here |
4799 | because we called start_display again | |
4800 | and did not alter it.current_y this time. */ | |
4801 | ||
940f53e5 RS |
4802 | /* If we have a header line, take account of it. */ |
4803 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
4804 | preserve_y -= CURRENT_HEADER_LINE_HEIGHT (w); | |
fa3c3426 | 4805 | #endif |
5cdb3cf3 | 4806 | |
940f53e5 RS |
4807 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); |
4808 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4809 | } | |
4810 | else | |
4811 | { | |
aed328bf | 4812 | if (partial_p) |
5cdb3cf3 MB |
4813 | /* The last line was only partially visible, so back up two |
4814 | lines to make sure we're on a fully visible line. */ | |
4815 | { | |
4816 | move_it_by_lines (&it, -2, 0); | |
4817 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
4818 | } | |
4819 | else | |
4820 | /* No, the position we saved is OK, so use it. */ | |
4821 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4822 | } |
4823 | } | |
4824 | } | |
4825 | ||
4826 | ||
4827 | /* Implementation of window_scroll that works based on screen lines. | |
4828 | See the comment of window_scroll for parameter descriptions. */ | |
4829 | ||
4830 | static void | |
4831 | window_scroll_line_based (window, n, whole, noerror) | |
4832 | Lisp_Object window; | |
4833 | int n; | |
4834 | int whole; | |
4835 | int noerror; | |
7ab12479 JB |
4836 | { |
4837 | register struct window *w = XWINDOW (window); | |
5500c422 | 4838 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 4839 | register int pos, pos_byte; |
7ab12479 JB |
4840 | register int ht = window_internal_height (w); |
4841 | register Lisp_Object tem; | |
4842 | int lose; | |
5500c422 | 4843 | Lisp_Object bolp; |
345d45b2 | 4844 | int startpos; |
101d1605 RS |
4845 | struct position posit; |
4846 | int original_vpos; | |
4847 | ||
d4e7cf01 GM |
4848 | /* If scrolling screen-fulls, compute the number of lines to |
4849 | scroll from the window's height. */ | |
4850 | if (whole) | |
4851 | n *= max (1, ht - next_screen_context_lines); | |
4852 | ||
101d1605 RS |
4853 | startpos = marker_position (w->start); |
4854 | ||
4855 | posit = *compute_motion (startpos, 0, 0, 0, | |
4856 | PT, ht, 0, | |
ec2b66c4 | 4857 | -1, XINT (w->hscroll), |
101d1605 RS |
4858 | 0, w); |
4859 | original_vpos = posit.vpos; | |
0a1f771a | 4860 | |
d834a2e9 | 4861 | XSETFASTINT (tem, PT); |
6ffdb539 | 4862 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4863 | |
265a9e55 | 4864 | if (NILP (tem)) |
7ab12479 | 4865 | { |
cd2be1dd | 4866 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4867 | startpos = PT; |
7ab12479 JB |
4868 | } |
4869 | ||
345d45b2 | 4870 | SET_PT (startpos); |
5ce7b543 | 4871 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4872 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4873 | pos = PT; |
b73ea88e | 4874 | pos_byte = PT_BYTE; |
7ab12479 | 4875 | bolp = Fbolp (); |
b73ea88e | 4876 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
4877 | |
4878 | if (lose) | |
f8026fd8 JB |
4879 | { |
4880 | if (noerror) | |
4881 | return; | |
4882 | else | |
4883 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4884 | } | |
7ab12479 JB |
4885 | |
4886 | if (pos < ZV) | |
7ab12479 | 4887 | { |
0c7da84e RS |
4888 | int this_scroll_margin = scroll_margin; |
4889 | ||
4890 | /* Don't use a scroll margin that is negative or too large. */ | |
4891 | if (this_scroll_margin < 0) | |
4892 | this_scroll_margin = 0; | |
4893 | ||
949cf20f KS |
4894 | if (XINT (w->total_lines) < 4 * scroll_margin) |
4895 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 4896 | |
b73ea88e | 4897 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4898 | w->start_at_line_beg = bolp; |
4899 | w->update_mode_line = Qt; | |
d834a2e9 | 4900 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4901 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4902 | /* Set force_start so that redisplay_window will run |
4903 | the window-scroll-functions. */ | |
4904 | w->force_start = Qt; | |
0c7da84e | 4905 | |
5500c422 | 4906 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 4907 | { |
b73ea88e | 4908 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 4909 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 4910 | } |
101d1605 RS |
4911 | /* If we scrolled forward, put point enough lines down |
4912 | that it is outside the scroll margin. */ | |
4913 | else if (n > 0) | |
0c7da84e | 4914 | { |
101d1605 RS |
4915 | int top_margin; |
4916 | ||
4917 | if (this_scroll_margin > 0) | |
4918 | { | |
b73ea88e | 4919 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4920 | Fvertical_motion (make_number (this_scroll_margin), window); |
4921 | top_margin = PT; | |
4922 | } | |
4923 | else | |
4924 | top_margin = pos; | |
4925 | ||
4926 | if (top_margin <= opoint) | |
b73ea88e | 4927 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 4928 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4929 | { |
b73ea88e | 4930 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4931 | Fvertical_motion (make_number (original_vpos), window); |
4932 | } | |
9317a85d | 4933 | else |
335406fc | 4934 | SET_PT (top_margin); |
0c7da84e | 4935 | } |
101d1605 | 4936 | else if (n < 0) |
7ab12479 | 4937 | { |
101d1605 RS |
4938 | int bottom_margin; |
4939 | ||
0c7da84e RS |
4940 | /* If we scrolled backward, put point near the end of the window |
4941 | but not within the scroll margin. */ | |
b73ea88e | 4942 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4943 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4944 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4945 | bottom_margin = PT; | |
4946 | else | |
4947 | bottom_margin = PT + 1; | |
4948 | ||
4949 | if (bottom_margin > opoint) | |
b73ea88e | 4950 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4951 | else |
101d1605 | 4952 | { |
5500c422 | 4953 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4954 | { |
b73ea88e | 4955 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4956 | Fvertical_motion (make_number (original_vpos), window); |
4957 | } | |
4958 | else | |
4959 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4960 | } |
7ab12479 JB |
4961 | } |
4962 | } | |
4963 | else | |
f8026fd8 JB |
4964 | { |
4965 | if (noerror) | |
4966 | return; | |
4967 | else | |
4968 | Fsignal (Qend_of_buffer, Qnil); | |
4969 | } | |
7ab12479 | 4970 | } |
5500c422 GM |
4971 | |
4972 | ||
4973 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4974 | screen-full which is defined as the height of the window minus | |
4975 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4976 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4977 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4978 | |
4979 | static void | |
4980 | scroll_command (n, direction) | |
5500c422 | 4981 | Lisp_Object n; |
7ab12479 JB |
4982 | int direction; |
4983 | { | |
331379bf | 4984 | int count = SPECPDL_INDEX (); |
7ab12479 | 4985 | |
5500c422 GM |
4986 | xassert (abs (direction) == 1); |
4987 | ||
4988 | /* If selected window's buffer isn't current, make it current for | |
4989 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4990 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4991 | { |
4992 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4993 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4994 | |
4995 | /* Make redisplay consider other windows than just selected_window. */ | |
4996 | ++windows_or_buffers_changed; | |
95605e15 | 4997 | } |
7ab12479 | 4998 | |
265a9e55 | 4999 | if (NILP (n)) |
d4e7cf01 | 5000 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5001 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5002 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5003 | else |
5004 | { | |
5005 | n = Fprefix_numeric_value (n); | |
101d1605 | 5006 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5007 | } |
95605e15 JB |
5008 | |
5009 | unbind_to (count, Qnil); | |
7ab12479 JB |
5010 | } |
5011 | ||
5012 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5013 | doc: /* Scroll text of current window upward ARG lines. |
5014 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5015 | A near full screen is `next-screen-context-lines' less than a full screen. |
5016 | Negative ARG means scroll downward. | |
5017 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5018 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5019 | (arg) | |
413430c5 | 5020 | Lisp_Object arg; |
7ab12479 | 5021 | { |
413430c5 | 5022 | scroll_command (arg, 1); |
7ab12479 JB |
5023 | return Qnil; |
5024 | } | |
5025 | ||
5026 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5027 | doc: /* Scroll text of current window down ARG lines. |
5028 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5029 | A near full screen is `next-screen-context-lines' less than a full screen. |
5030 | Negative ARG means scroll upward. | |
5031 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5032 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5033 | (arg) | |
413430c5 | 5034 | Lisp_Object arg; |
7ab12479 | 5035 | { |
413430c5 | 5036 | scroll_command (arg, -1); |
7ab12479 JB |
5037 | return Qnil; |
5038 | } | |
ccd0664b RS |
5039 | \f |
5040 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5041 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5042 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5043 | showing that buffer is used. |
5044 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5045 | specifies the window. This takes precedence over | |
5046 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5047 | () |
7ab12479 | 5048 | { |
ccd0664b | 5049 | Lisp_Object window; |
7ab12479 JB |
5050 | |
5051 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5052 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5053 | window = Vminibuf_scroll_window; |
5054 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5055 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5056 | { |
5057 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5058 | if (NILP (window)) |
53f76081 | 5059 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5060 | } |
5061 | else | |
dbc4e1c1 JB |
5062 | { |
5063 | /* Nothing specified; look for a neighboring window on the same | |
5064 | frame. */ | |
5065 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5066 | ||
5067 | if (EQ (window, selected_window)) | |
5068 | /* That didn't get us anywhere; look for a window on another | |
5069 | visible frame. */ | |
5070 | do | |
5071 | window = Fnext_window (window, Qnil, Qt); | |
5072 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5073 | && ! EQ (window, selected_window)); | |
5074 | } | |
5075 | ||
b7826503 | 5076 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5077 | |
5078 | if (EQ (window, selected_window)) | |
5079 | error ("There is no other window"); | |
5080 | ||
ccd0664b RS |
5081 | return window; |
5082 | } | |
5083 | ||
5084 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5085 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5086 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5087 | The next window is the one below the current one; or the one at the top | |
5088 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5089 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5090 | When calling from a program, supply as argument a number, nil, or `-'. | |
5091 | ||
fdb82f93 | 5092 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5093 | showing that buffer, popping the buffer up if necessary. |
5094 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5095 | specifies the window to scroll. This takes precedence over | |
5096 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5097 | (arg) |
d4e7cf01 | 5098 | Lisp_Object arg; |
ccd0664b | 5099 | { |
d4e7cf01 GM |
5100 | Lisp_Object window; |
5101 | struct window *w; | |
331379bf | 5102 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5103 | |
5104 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5105 | w = XWINDOW (window); |
7ab12479 JB |
5106 | |
5107 | /* Don't screw up if window_scroll gets an error. */ | |
5108 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5109 | ++windows_or_buffers_changed; |
7ab12479 JB |
5110 | |
5111 | Fset_buffer (w->buffer); | |
5112 | SET_PT (marker_position (w->pointm)); | |
5113 | ||
413430c5 | 5114 | if (NILP (arg)) |
d4e7cf01 | 5115 | window_scroll (window, 1, 1, 1); |
413430c5 | 5116 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5117 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5118 | else |
5119 | { | |
413430c5 EN |
5120 | if (CONSP (arg)) |
5121 | arg = Fcar (arg); | |
b7826503 | 5122 | CHECK_NUMBER (arg); |
101d1605 | 5123 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5124 | } |
5125 | ||
b73ea88e | 5126 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5127 | unbind_to (count, Qnil); |
7ab12479 JB |
5128 | |
5129 | return Qnil; | |
5130 | } | |
5131 | \f | |
dc297565 | 5132 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5133 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5134 | Default for ARG is window width minus 2. |
5135 | Value is the total amount of leftward horizontal scrolling in | |
5136 | effect after the change. | |
dc297565 RS |
5137 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5138 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5139 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5140 | by this function. This happens in an interactive call. */) |
5141 | (arg, set_minimum) | |
5142 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5143 | { |
c67fa410 GM |
5144 | Lisp_Object result; |
5145 | int hscroll; | |
5146 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5147 | |
265a9e55 | 5148 | if (NILP (arg)) |
949cf20f | 5149 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5150 | else |
5151 | arg = Fprefix_numeric_value (arg); | |
5152 | ||
c67fa410 GM |
5153 | hscroll = XINT (w->hscroll) + XINT (arg); |
5154 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5155 | ||
dc297565 | 5156 | if (!NILP (set_minimum)) |
c67fa410 GM |
5157 | w->min_hscroll = w->hscroll; |
5158 | ||
5159 | return result; | |
7ab12479 JB |
5160 | } |
5161 | ||
dc297565 | 5162 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5163 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5164 | Default for ARG is window width minus 2. |
5165 | Value is the total amount of leftward horizontal scrolling in | |
5166 | effect after the change. | |
dc297565 RS |
5167 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5168 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5169 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5170 | by this function. This happens in an interactive call. */) |
5171 | (arg, set_minimum) | |
a93563fd | 5172 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5173 | { |
c67fa410 GM |
5174 | Lisp_Object result; |
5175 | int hscroll; | |
5176 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5177 | |
265a9e55 | 5178 | if (NILP (arg)) |
949cf20f | 5179 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5180 | else |
5181 | arg = Fprefix_numeric_value (arg); | |
5182 | ||
c67fa410 GM |
5183 | hscroll = XINT (w->hscroll) - XINT (arg); |
5184 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5185 | |
dc297565 | 5186 | if (!NILP (set_minimum)) |
c67fa410 GM |
5187 | w->min_hscroll = w->hscroll; |
5188 | ||
5189 | return result; | |
7ab12479 JB |
5190 | } |
5191 | ||
fa832261 KS |
5192 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5193 | doc: /* Return the window which was selected when entering the minibuffer. | |
5194 | Returns nil, if current window is not a minibuffer window. */) | |
5195 | () | |
5196 | { | |
5197 | if (minibuf_level > 0 | |
5198 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5199 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5200 | return minibuf_selected_window; | |
5201 | ||
5202 | return Qnil; | |
5203 | } | |
5204 | ||
12c8b416 GM |
5205 | /* Value is the number of lines actually displayed in window W, |
5206 | as opposed to its height. */ | |
5207 | ||
5208 | static int | |
5209 | displayed_window_lines (w) | |
5210 | struct window *w; | |
5211 | { | |
5212 | struct it it; | |
5213 | struct text_pos start; | |
5214 | int height = window_box_height (w); | |
5215 | struct buffer *old_buffer; | |
5216 | int bottom_y; | |
5217 | ||
5218 | if (XBUFFER (w->buffer) != current_buffer) | |
5219 | { | |
5220 | old_buffer = current_buffer; | |
5221 | set_buffer_internal (XBUFFER (w->buffer)); | |
5222 | } | |
5223 | else | |
5224 | old_buffer = NULL; | |
5225 | ||
521b203e GM |
5226 | /* In case W->start is out of the accessible range, do something |
5227 | reasonable. This happens in Info mode when Info-scroll-down | |
5228 | calls (recenter -1) while W->start is 1. */ | |
5229 | if (XMARKER (w->start)->charpos < BEGV) | |
5230 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5231 | else if (XMARKER (w->start)->charpos > ZV) | |
5232 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5233 | else | |
5234 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5235 | ||
12c8b416 GM |
5236 | start_display (&it, w, start); |
5237 | move_it_vertically (&it, height); | |
c8bc6f65 | 5238 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5239 | |
1de65f51 RS |
5240 | /* rms: On a non-window display, |
5241 | the value of it.vpos at the bottom of the screen | |
5242 | seems to be 1 larger than window_box_height (w). | |
5243 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5244 | when ZV is on the last screen line | |
5245 | moves to the previous screen line instead of the last one. */ | |
5246 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5247 | height++; | |
5248 | ||
12c8b416 GM |
5249 | /* Add in empty lines at the bottom of the window. */ |
5250 | if (bottom_y < height) | |
5251 | { | |
949cf20f | 5252 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5253 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5254 | } |
5255 | ||
c8bc6f65 GM |
5256 | if (old_buffer) |
5257 | set_buffer_internal (old_buffer); | |
5258 | ||
12c8b416 GM |
5259 | return it.vpos; |
5260 | } | |
5261 | ||
5262 | ||
7ab12479 | 5263 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5264 | doc: /* Center point in window and redisplay frame. |
5265 | With prefix argument ARG, recenter putting point on screen line ARG | |
5266 | relative to the current window. If ARG is negative, it counts up from the | |
5267 | bottom of the window. (ARG should be less than the height of the window.) | |
5268 | ||
5269 | If ARG is omitted or nil, erase the entire frame and then | |
5270 | redraw with point in the center of the current window. | |
5271 | Just C-u as prefix means put point in the center of the window | |
5272 | and redisplay normally--don't erase and redraw the frame. */) | |
5273 | (arg) | |
413430c5 | 5274 | register Lisp_Object arg; |
7ab12479 | 5275 | { |
6df47b59 | 5276 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5277 | struct buffer *buf = XBUFFER (w->buffer); |
5278 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5279 | int center_p = 0; |
5280 | int charpos, bytepos; | |
7ab12479 | 5281 | |
0fa5d25b RS |
5282 | /* If redisplay is suppressed due to an error, try again. */ |
5283 | obuf->display_error_modiff = 0; | |
5284 | ||
413430c5 | 5285 | if (NILP (arg)) |
7ab12479 | 5286 | { |
f02d6d5c KH |
5287 | int i; |
5288 | ||
5289 | /* Invalidate pixel data calculated for all compositions. */ | |
5290 | for (i = 0; i < n_compositions; i++) | |
5291 | composition_table[i]->font = NULL; | |
7ab12479 | 5292 | |
527b6458 | 5293 | Fredraw_frame (w->frame); |
44fa5b1e | 5294 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 5295 | center_p = 1; |
7ab12479 | 5296 | } |
413430c5 | 5297 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5298 | center_p = 1; |
7ab12479 JB |
5299 | else |
5300 | { | |
413430c5 | 5301 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5302 | CHECK_NUMBER (arg); |
7ab12479 JB |
5303 | } |
5304 | ||
478292ed | 5305 | set_buffer_internal (buf); |
7ab12479 | 5306 | |
521b203e | 5307 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5308 | have variable-height lines and centering point on the basis of |
5309 | line counts would lead to strange effects. */ | |
521b203e | 5310 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5311 | { |
6df47b59 GM |
5312 | if (center_p) |
5313 | { | |
521b203e GM |
5314 | struct it it; |
5315 | struct text_pos pt; | |
177c0ea7 | 5316 | |
521b203e GM |
5317 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5318 | start_display (&it, w, pt); | |
f204989e | 5319 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5320 | charpos = IT_CHARPOS (it); |
5321 | bytepos = IT_BYTEPOS (it); | |
6df47b59 GM |
5322 | } |
5323 | else if (XINT (arg) < 0) | |
5324 | { | |
521b203e GM |
5325 | struct it it; |
5326 | struct text_pos pt; | |
f204989e KS |
5327 | int nlines = - XINT (arg); |
5328 | int extra_line_spacing; | |
5329 | int h = window_box_height (w); | |
177c0ea7 | 5330 | |
521b203e GM |
5331 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5332 | start_display (&it, w, pt); | |
f204989e KS |
5333 | |
5334 | /* Be sure we have the exact height of the full line containing PT. */ | |
5335 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5336 | |
d466fa4d | 5337 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5338 | height minus what's displayed in the line containing PT, |
5339 | and the lines below. */ | |
f204989e KS |
5340 | it.current_y = 0; |
5341 | it.vpos = 0; | |
d466fa4d GM |
5342 | move_it_by_lines (&it, nlines, 1); |
5343 | ||
f204989e KS |
5344 | if (it.vpos == nlines) |
5345 | h -= it.current_y; | |
5346 | else | |
5347 | { | |
5348 | /* Last line has no newline */ | |
5349 | h -= line_bottom_y (&it); | |
5350 | it.vpos++; | |
5351 | } | |
5352 | ||
5353 | /* Don't reserve space for extra line spacing of last line. */ | |
5354 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5355 | |
5356 | /* If we can't move down NLINES lines because we hit | |
5357 | the end of the buffer, count in some empty lines. */ | |
5358 | if (it.vpos < nlines) | |
f204989e KS |
5359 | { |
5360 | nlines -= it.vpos; | |
5361 | extra_line_spacing = it.extra_line_spacing; | |
5362 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5363 | } | |
5364 | if (h <= 0) | |
5365 | return Qnil; | |
201c831a | 5366 | |
f204989e | 5367 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5368 | start_display (&it, w, pt); |
f204989e KS |
5369 | it.current_y = 0; |
5370 | move_it_vertically_backward (&it, h); | |
5371 | ||
5372 | /* If extra line spacing is present, we may move too far | |
5373 | back. This causes the last line to be only partially | |
5374 | visible (which triggers redisplay to recenter that line | |
5375 | in the middle), so move forward. | |
5376 | But ignore extra line spacing on last line, as it is not | |
5377 | considered to be part of the visible height of the line. | |
5378 | */ | |
5379 | h += extra_line_spacing; | |
5380 | while (-it.current_y > h) | |
5381 | move_it_by_lines (&it, 1, 1); | |
5382 | ||
521b203e GM |
5383 | charpos = IT_CHARPOS (it); |
5384 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5385 | } |
521b203e GM |
5386 | else |
5387 | { | |
5388 | struct position pos; | |
5389 | pos = *vmotion (PT, - XINT (arg), w); | |
5390 | charpos = pos.bufpos; | |
5391 | bytepos = pos.bytepos; | |
5392 | } | |
5393 | } | |
5394 | else | |
5395 | { | |
5396 | struct position pos; | |
5397 | int ht = window_internal_height (w); | |
5398 | ||
5399 | if (center_p) | |
5400 | arg = make_number (ht / 2); | |
5401 | else if (XINT (arg) < 0) | |
5402 | arg = make_number (XINT (arg) + ht); | |
177c0ea7 | 5403 | |
6df47b59 GM |
5404 | pos = *vmotion (PT, - XINT (arg), w); |
5405 | charpos = pos.bufpos; | |
5406 | bytepos = pos.bytepos; | |
5407 | } | |
5408 | ||
5409 | /* Set the new window start. */ | |
5410 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5411 | w->window_end_valid = Qnil; |
177c0ea7 | 5412 | |
95605b1b RS |
5413 | w->optional_new_start = Qt; |
5414 | ||
6df47b59 GM |
5415 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5416 | w->start_at_line_beg = Qt; | |
5417 | else | |
5418 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5419 | |
478292ed | 5420 | set_buffer_internal (obuf); |
7ab12479 JB |
5421 | return Qnil; |
5422 | } | |
b7617575 GM |
5423 | |
5424 | ||
81fe0836 | 5425 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5426 | 0, 1, 0, |
5427 | doc: /* Return the height in lines of the text display area of WINDOW. | |
5428 | This doesn't include the mode-line (or header-line if any) or any | |
5429 | partial-height lines in the text display area. */) | |
5430 | (window) | |
81fe0836 MB |
5431 | Lisp_Object window; |
5432 | { | |
5433 | struct window *w = decode_window (window); | |
5434 | int pixel_height = window_box_height (w); | |
949cf20f | 5435 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5436 | return make_number (line_height); |
5437 | } | |
5438 | ||
5439 | ||
7ab12479 JB |
5440 | \f |
5441 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5442 | 1, 1, "P", |
5443 | doc: /* Position point relative to window. | |
5444 | With no argument, position point at center of window. | |
5445 | An argument specifies vertical position within the window; | |
5446 | zero means top of window, negative means relative to bottom of window. */) | |
5447 | (arg) | |
b7617575 | 5448 | Lisp_Object arg; |
7ab12479 | 5449 | { |
b7617575 GM |
5450 | struct window *w = XWINDOW (selected_window); |
5451 | int lines, start; | |
540b6aa0 | 5452 | Lisp_Object window; |
7ab12479 | 5453 | |
b7617575 | 5454 | window = selected_window; |
7ab12479 JB |
5455 | start = marker_position (w->start); |
5456 | if (start < BEGV || start > ZV) | |
5457 | { | |
b7617575 | 5458 | int height = window_internal_height (w); |
cd2be1dd | 5459 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5460 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5461 | w->start_at_line_beg = Fbolp (); |
5462 | w->force_start = Qt; | |
5463 | } | |
5464 | else | |
b73ea88e | 5465 | Fgoto_char (w->start); |
7ab12479 | 5466 | |
b7617575 GM |
5467 | lines = displayed_window_lines (w); |
5468 | if (NILP (arg)) | |
5469 | XSETFASTINT (arg, lines / 2); | |
5470 | else | |
5471 | { | |
5472 | arg = Fprefix_numeric_value (arg); | |
5473 | if (XINT (arg) < 0) | |
5474 | XSETINT (arg, XINT (arg) + lines); | |
5475 | } | |
5476 | ||
c8bc6f65 | 5477 | /* Skip past a partially visible first line. */ |
163784df | 5478 | if (w->vscroll) |
163784df MB |
5479 | XSETINT (arg, XINT (arg) + 1); |
5480 | ||
540b6aa0 | 5481 | return Fvertical_motion (arg, window); |
7ab12479 | 5482 | } |
5500c422 GM |
5483 | |
5484 | ||
7ab12479 | 5485 | \f |
5500c422 GM |
5486 | /*********************************************************************** |
5487 | Window Configuration | |
5488 | ***********************************************************************/ | |
5489 | ||
7ab12479 JB |
5490 | struct save_window_data |
5491 | { | |
f5ccc0cc | 5492 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 5493 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 5494 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 5495 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 5496 | Lisp_Object selected_frame; |
7ab12479 JB |
5497 | Lisp_Object current_window; |
5498 | Lisp_Object current_buffer; | |
5499 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5500 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5501 | Lisp_Object root_window; |
bdc727bf | 5502 | Lisp_Object focus_frame; |
756b6edc RS |
5503 | /* Record the values of window-min-width and window-min-height |
5504 | so that window sizes remain consistent with them. */ | |
5505 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
5506 | /* A vector, each of whose elements is a struct saved_window |
5507 | for one window. */ | |
7ab12479 JB |
5508 | Lisp_Object saved_windows; |
5509 | }; | |
ff06df24 | 5510 | |
cbff28e8 | 5511 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5512 | struct saved_window |
ea68264b GM |
5513 | { |
5514 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
5515 | EMACS_INT size_from_Lisp_Vector_struct; | |
5516 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 5517 | |
ea68264b GM |
5518 | Lisp_Object window; |
5519 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5520 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5521 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5522 | Lisp_Object parent, prev; |
5523 | Lisp_Object start_at_line_beg; | |
5524 | Lisp_Object display_table; | |
949cf20f KS |
5525 | Lisp_Object orig_top_line, orig_total_lines; |
5526 | Lisp_Object left_margin_cols, right_margin_cols; | |
5527 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5528 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
ea68264b GM |
5529 | }; |
5530 | ||
949cf20f | 5531 | #define SAVED_WINDOW_VECTOR_SIZE 24 /* Arg to Fmake_vector */ |
7ab12479 JB |
5532 | |
5533 | #define SAVED_WINDOW_N(swv,n) \ | |
5534 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5535 | ||
5536 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5537 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5538 | (object) | |
413430c5 | 5539 | Lisp_Object object; |
7ab12479 | 5540 | { |
413430c5 | 5541 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
5542 | return Qt; |
5543 | return Qnil; | |
5544 | } | |
5545 | ||
3f8ab7bd | 5546 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5547 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5548 | (config) | |
3f8ab7bd RS |
5549 | Lisp_Object config; |
5550 | { | |
5551 | register struct save_window_data *data; | |
5552 | struct Lisp_Vector *saved_windows; | |
5553 | ||
5554 | if (! WINDOW_CONFIGURATIONP (config)) | |
5555 | wrong_type_argument (Qwindow_configuration_p, config); | |
5556 | ||
5557 | data = (struct save_window_data *) XVECTOR (config); | |
5558 | saved_windows = XVECTOR (data->saved_windows); | |
5559 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5560 | } | |
5561 | ||
d5b2799e | 5562 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5563 | Sset_window_configuration, 1, 1, 0, |
5564 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5565 | CONFIGURATION must be a value previously returned | |
5566 | by `current-window-configuration' (which see). | |
5567 | If CONFIGURATION was made from a frame that is now deleted, | |
5568 | only frame-independent values can be restored. In this case, | |
5569 | the return value is nil. Otherwise the value is t. */) | |
5570 | (configuration) | |
2f83aebe | 5571 | Lisp_Object configuration; |
7ab12479 | 5572 | { |
7ab12479 JB |
5573 | register struct save_window_data *data; |
5574 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5575 | Lisp_Object new_current_buffer; |
fd482be5 | 5576 | Lisp_Object frame; |
44fa5b1e | 5577 | FRAME_PTR f; |
72695e47 | 5578 | int old_point = -1; |
7ab12479 | 5579 | |
017b2bad | 5580 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 5581 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 5582 | |
2f83aebe | 5583 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5584 | saved_windows = XVECTOR (data->saved_windows); |
5585 | ||
7ab12479 | 5586 | new_current_buffer = data->current_buffer; |
265a9e55 | 5587 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5588 | new_current_buffer = Qnil; |
72695e47 | 5589 | else |
73cadfc1 DK |
5590 | { |
5591 | if (XBUFFER (new_current_buffer) == current_buffer) | |
5592 | old_point = PT; | |
5593 | else | |
5594 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
5595 | } | |
7ab12479 | 5596 | |
fd482be5 JB |
5597 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5598 | f = XFRAME (frame); | |
177c0ea7 | 5599 | |
fd482be5 JB |
5600 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5601 | However, there is other stuff we should still try to do below. */ | |
5602 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5603 | { |
fd482be5 JB |
5604 | register struct window *w; |
5605 | register struct saved_window *p; | |
5500c422 GM |
5606 | struct window *root_window; |
5607 | struct window **leaf_windows; | |
5608 | int n_leaf_windows; | |
c4280705 | 5609 | int k, i, n; |
fd482be5 JB |
5610 | |
5611 | /* If the frame has been resized since this window configuration was | |
5612 | made, we change the frame to the size specified in the | |
5613 | configuration, restore the configuration, and then resize it | |
5614 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5615 | int previous_frame_lines = FRAME_LINES (f); |
5616 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5617 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5618 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5619 | |
d2b35234 RS |
5620 | /* The mouse highlighting code could get screwed up |
5621 | if it runs during this. */ | |
5622 | BLOCK_INPUT; | |
5623 | ||
949cf20f KS |
5624 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
5625 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
5626 | change_frame_size (f, XFASTINT (data->frame_lines), | |
5627 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 5628 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
5629 | if (XFASTINT (data->frame_menu_bar_lines) |
5630 | != previous_frame_menu_bar_lines) | |
f8ad443a | 5631 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 5632 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5633 | if (XFASTINT (data->frame_tool_bar_lines) |
5634 | != previous_frame_tool_bar_lines) | |
5635 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 5636 | #endif |
217f2871 | 5637 | #endif |
fd482be5 | 5638 | |
719eaeb1 GM |
5639 | /* "Swap out" point from the selected window |
5640 | into its buffer. We do this now, before | |
5641 | restoring the window contents, and prevent it from | |
5642 | being done later on when we select a new window. */ | |
596ae0cf RS |
5643 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5644 | { | |
5645 | w = XWINDOW (selected_window); | |
5646 | set_marker_both (w->pointm, | |
5647 | w->buffer, | |
5648 | BUF_PT (XBUFFER (w->buffer)), | |
5649 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5650 | } | |
5651 | ||
fd482be5 | 5652 | windows_or_buffers_changed++; |
29aeee73 | 5653 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5654 | |
5500c422 | 5655 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5656 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
5657 | really like to do is to free only those matrices not reused |
5658 | below. */ | |
5659 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
5660 | leaf_windows | |
5661 | = (struct window **) alloca (count_windows (root_window) | |
5662 | * sizeof (struct window *)); | |
5663 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5664 | ||
756b6edc RS |
5665 | /* Temporarily avoid any problems with windows that are smaller |
5666 | than they are supposed to be. */ | |
5667 | window_min_height = 1; | |
5668 | window_min_width = 1; | |
5669 | ||
fd482be5 JB |
5670 | /* Kludge Alert! |
5671 | Mark all windows now on frame as "deleted". | |
5672 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5673 | |
fd482be5 JB |
5674 | Save their current buffers in their height fields, since we may |
5675 | need it later, if a buffer saved in the configuration is now | |
5676 | dead. */ | |
5677 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
5678 | ||
5679 | for (k = 0; k < saved_windows->size; k++) | |
5680 | { | |
5681 | p = SAVED_WINDOW_N (saved_windows, k); | |
5682 | w = XWINDOW (p->window); | |
5683 | w->next = Qnil; | |
7ab12479 | 5684 | |
fd482be5 JB |
5685 | if (!NILP (p->parent)) |
5686 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5687 | XFASTINT (p->parent))->window; | |
5688 | else | |
5689 | w->parent = Qnil; | |
7ab12479 | 5690 | |
fd482be5 | 5691 | if (!NILP (p->prev)) |
7ab12479 | 5692 | { |
fd482be5 JB |
5693 | w->prev = SAVED_WINDOW_N (saved_windows, |
5694 | XFASTINT (p->prev))->window; | |
5695 | XWINDOW (w->prev)->next = p->window; | |
5696 | } | |
5697 | else | |
5698 | { | |
5699 | w->prev = Qnil; | |
5700 | if (!NILP (w->parent)) | |
5701 | { | |
949cf20f | 5702 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5703 | { |
5704 | XWINDOW (w->parent)->vchild = p->window; | |
5705 | XWINDOW (w->parent)->hchild = Qnil; | |
5706 | } | |
5707 | else | |
5708 | { | |
5709 | XWINDOW (w->parent)->hchild = p->window; | |
5710 | XWINDOW (w->parent)->vchild = Qnil; | |
5711 | } | |
5712 | } | |
5713 | } | |
5714 | ||
5715 | /* If we squirreled away the buffer in the window's height, | |
5716 | restore it now. */ | |
949cf20f KS |
5717 | if (BUFFERP (w->total_lines)) |
5718 | w->buffer = w->total_lines; | |
5719 | w->left_col = p->left_col; | |
5720 | w->top_line = p->top_line; | |
5721 | w->total_cols = p->total_cols; | |
5722 | w->total_lines = p->total_lines; | |
fd482be5 | 5723 | w->hscroll = p->hscroll; |
ea68264b | 5724 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5725 | w->display_table = p->display_table; |
949cf20f KS |
5726 | w->orig_top_line = p->orig_top_line; |
5727 | w->orig_total_lines = p->orig_total_lines; | |
5728 | w->left_margin_cols = p->left_margin_cols; | |
5729 | w->right_margin_cols = p->right_margin_cols; | |
5730 | w->left_fringe_width = p->left_fringe_width; | |
5731 | w->right_fringe_width = p->right_fringe_width; | |
5732 | w->fringes_outside_margins = p->fringes_outside_margins; | |
5733 | w->scroll_bar_width = p->scroll_bar_width; | |
5734 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
d834a2e9 | 5735 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5736 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5737 | |
5738 | /* Reinstall the saved buffer and pointers into it. */ | |
5739 | if (NILP (p->buffer)) | |
5740 | w->buffer = p->buffer; | |
5741 | else | |
5742 | { | |
5743 | if (!NILP (XBUFFER (p->buffer)->name)) | |
5744 | /* If saved buffer is alive, install it. */ | |
5745 | { | |
5746 | w->buffer = p->buffer; | |
5747 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
5748 | set_marker_restricted (w->start, p->start, w->buffer); |
5749 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 5750 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 5751 | p->mark, w->buffer); |
fd482be5 JB |
5752 | |
5753 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
5754 | restore the location of point in the buffer which was |
5755 | current when the window configuration was recorded. */ | |
6b54027b RS |
5756 | if (!EQ (p->buffer, new_current_buffer) |
5757 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
5758 | Fgoto_char (w->pointm); |
5759 | } | |
52a68e98 RS |
5760 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
5761 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 5762 | { |
fd482be5 JB |
5763 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
5764 | /* This will set the markers to beginning of visible | |
5765 | range. */ | |
5766 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5767 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
5768 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
5769 | } |
5770 | else | |
fd482be5 | 5771 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 5772 | are real. */ |
7ab12479 | 5773 | { |
fd482be5 JB |
5774 | /* Set window markers at start of visible range. */ |
5775 | if (XMARKER (w->start)->buffer == 0) | |
5776 | set_marker_restricted (w->start, make_number (0), | |
5777 | w->buffer); | |
5778 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
5779 | set_marker_restricted_both (w->pointm, w->buffer, |
5780 | BUF_PT (XBUFFER (w->buffer)), | |
5781 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 5782 | w->start_at_line_beg = Qt; |
7ab12479 JB |
5783 | } |
5784 | } | |
5785 | } | |
9ace597f | 5786 | |
fd482be5 | 5787 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
5788 | /* Prevent "swapping out point" in the old selected window |
5789 | using the buffer that has been restored into it. | |
72695e47 RS |
5790 | Use the point value from the beginning of this function |
5791 | since unshow_buffer (called from delete_all_subwindows) | |
5792 | could have altered it. */ | |
719eaeb1 | 5793 | selected_window = Qnil; |
243a5ce6 RS |
5794 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5795 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5796 | make_number (old_point), |
243a5ce6 | 5797 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5798 | |
14d87dc9 | 5799 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
5800 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
5801 | = selected_window; | |
7ab12479 | 5802 | |
db269683 | 5803 | if (NILP (data->focus_frame) |
017b2bad | 5804 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5805 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5806 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5807 | |
fd482be5 JB |
5808 | #if 0 /* I don't understand why this is needed, and it causes problems |
5809 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 5810 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 5811 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 5812 | 0, 0); |
fd482be5 JB |
5813 | #endif |
5814 | ||
5815 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
5816 | if (previous_frame_lines != FRAME_LINES (f) |
5817 | || previous_frame_cols != FRAME_COLS (f)) | |
5818 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5819 | 0, 0, 0); |
e3678b64 | 5820 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5821 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5822 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5823 | make_number (0)); | |
4314246f | 5824 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5825 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5826 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5827 | make_number (0)); | |
4314246f | 5828 | #endif |
217f2871 | 5829 | #endif |
d2b35234 | 5830 | |
5500c422 | 5831 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5832 | for (i = n = 0; i < n_leaf_windows; ++i) |
5833 | { | |
5834 | if (NILP (leaf_windows[i]->buffer)) | |
5835 | { | |
5836 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 5837 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
5838 | && NILP (leaf_windows[i]->vchild)); |
5839 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5840 | } |
5841 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5842 | ++n; | |
5843 | } | |
177c0ea7 | 5844 | |
5500c422 GM |
5845 | adjust_glyphs (f); |
5846 | ||
d2b35234 | 5847 | UNBLOCK_INPUT; |
756b6edc | 5848 | |
478292ed RS |
5849 | /* Fselect_window will have made f the selected frame, so we |
5850 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5851 | selected window too, but that doesn't make the call to | |
5852 | Fselect_window above totally superfluous; it still sets f's | |
5853 | selected window. */ | |
5854 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 5855 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
5856 | |
5857 | if (! NILP (Vwindow_configuration_change_hook) | |
5858 | && ! NILP (Vrun_hooks)) | |
5859 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
5860 | } | |
bdc727bf JB |
5861 | |
5862 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5863 | Fset_buffer (new_current_buffer); |
bdc727bf | 5864 | |
478292ed RS |
5865 | /* Restore the minimum heights recorded in the configuration. */ |
5866 | window_min_height = XINT (data->min_height); | |
5867 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 5868 | |
478292ed | 5869 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5870 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5871 | |
3f8ab7bd | 5872 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5873 | } |
5874 | ||
44fa5b1e | 5875 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
5876 | by setting their buffers to nil. */ |
5877 | ||
fd482be5 | 5878 | void |
7ab12479 JB |
5879 | delete_all_subwindows (w) |
5880 | register struct window *w; | |
5881 | { | |
265a9e55 | 5882 | if (!NILP (w->next)) |
7ab12479 | 5883 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 5884 | if (!NILP (w->vchild)) |
7ab12479 | 5885 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 5886 | if (!NILP (w->hchild)) |
7ab12479 | 5887 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 5888 | |
949cf20f | 5889 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 5890 | |
86e48436 RS |
5891 | if (!NILP (w->buffer)) |
5892 | unshow_buffer (w); | |
5893 | ||
605be8af JB |
5894 | /* We set all three of these fields to nil, to make sure that we can |
5895 | distinguish this dead window from any live window. Live leaf | |
5896 | windows will have buffer set, and combination windows will have | |
5897 | vchild or hchild set. */ | |
5898 | w->buffer = Qnil; | |
5899 | w->vchild = Qnil; | |
5900 | w->hchild = Qnil; | |
acf70840 GM |
5901 | |
5902 | Vwindow_list = Qnil; | |
7ab12479 JB |
5903 | } |
5904 | \f | |
5905 | static int | |
5906 | count_windows (window) | |
5907 | register struct window *window; | |
5908 | { | |
5909 | register int count = 1; | |
265a9e55 | 5910 | if (!NILP (window->next)) |
7ab12479 | 5911 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5912 | if (!NILP (window->vchild)) |
7ab12479 | 5913 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5914 | if (!NILP (window->hchild)) |
7ab12479 JB |
5915 | count += count_windows (XWINDOW (window->hchild)); |
5916 | return count; | |
5917 | } | |
5918 | ||
5500c422 | 5919 | |
177c0ea7 | 5920 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
5921 | Value is last index + 1. */ |
5922 | ||
5923 | static int | |
5924 | get_leaf_windows (w, flat, i) | |
5925 | struct window *w; | |
5926 | struct window **flat; | |
5927 | int i; | |
5928 | { | |
5929 | while (w) | |
5930 | { | |
5931 | if (!NILP (w->hchild)) | |
5932 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5933 | else if (!NILP (w->vchild)) | |
5934 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5935 | else |
5500c422 GM |
5936 | flat[i++] = w; |
5937 | ||
5938 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5939 | } | |
5940 | ||
5941 | return i; | |
5942 | } | |
5943 | ||
5944 | ||
5945 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5946 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5947 | can be returned. */ | |
5948 | ||
5949 | struct glyph * | |
5950 | get_phys_cursor_glyph (w) | |
5951 | struct window *w; | |
5952 | { | |
5953 | struct glyph_row *row; | |
5954 | struct glyph *glyph; | |
5955 | ||
5956 | if (w->phys_cursor.vpos >= 0 | |
5957 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
5958 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
5959 | row->enabled_p) | |
5960 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
5961 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
5962 | else | |
5963 | glyph = NULL; | |
5964 | ||
5965 | return glyph; | |
5966 | } | |
5967 | ||
5968 | ||
7ab12479 JB |
5969 | static int |
5970 | save_window_save (window, vector, i) | |
5971 | Lisp_Object window; | |
5972 | struct Lisp_Vector *vector; | |
5973 | int i; | |
5974 | { | |
5975 | register struct saved_window *p; | |
5976 | register struct window *w; | |
5977 | register Lisp_Object tem; | |
5978 | ||
265a9e55 | 5979 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5980 | { |
5981 | p = SAVED_WINDOW_N (vector, i); | |
5982 | w = XWINDOW (window); | |
5983 | ||
2a1893f4 | 5984 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
5985 | p->window = window; |
5986 | p->buffer = w->buffer; | |
949cf20f KS |
5987 | p->left_col = w->left_col; |
5988 | p->top_line = w->top_line; | |
5989 | p->total_cols = w->total_cols; | |
5990 | p->total_lines = w->total_lines; | |
7ab12479 | 5991 | p->hscroll = w->hscroll; |
ea68264b | 5992 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5993 | p->display_table = w->display_table; |
949cf20f KS |
5994 | p->orig_top_line = w->orig_top_line; |
5995 | p->orig_total_lines = w->orig_total_lines; | |
5996 | p->left_margin_cols = w->left_margin_cols; | |
5997 | p->right_margin_cols = w->right_margin_cols; | |
5998 | p->left_fringe_width = w->left_fringe_width; | |
5999 | p->right_fringe_width = w->right_fringe_width; | |
6000 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6001 | p->scroll_bar_width = w->scroll_bar_width; | |
6002 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
265a9e55 | 6003 | if (!NILP (w->buffer)) |
7ab12479 JB |
6004 | { |
6005 | /* Save w's value of point in the window configuration. | |
6006 | If w is the selected window, then get the value of point | |
6007 | from the buffer; pointm is garbage in the selected window. */ | |
6008 | if (EQ (window, selected_window)) | |
6009 | { | |
6010 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6011 | set_marker_both (p->pointm, w->buffer, |
6012 | BUF_PT (XBUFFER (w->buffer)), | |
6013 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6014 | } |
6015 | else | |
eeb82665 | 6016 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6017 | |
eeb82665 | 6018 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6019 | p->start_at_line_beg = w->start_at_line_beg; |
6020 | ||
6021 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6022 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6023 | } |
6024 | else | |
6025 | { | |
6026 | p->pointm = Qnil; | |
6027 | p->start = Qnil; | |
6028 | p->mark = Qnil; | |
6029 | p->start_at_line_beg = Qnil; | |
6030 | } | |
6031 | ||
265a9e55 | 6032 | if (NILP (w->parent)) |
7ab12479 JB |
6033 | p->parent = Qnil; |
6034 | else | |
6035 | p->parent = XWINDOW (w->parent)->temslot; | |
6036 | ||
265a9e55 | 6037 | if (NILP (w->prev)) |
7ab12479 JB |
6038 | p->prev = Qnil; |
6039 | else | |
6040 | p->prev = XWINDOW (w->prev)->temslot; | |
6041 | ||
265a9e55 | 6042 | if (!NILP (w->vchild)) |
7ab12479 | 6043 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6044 | if (!NILP (w->hchild)) |
7ab12479 JB |
6045 | i = save_window_save (w->hchild, vector, i); |
6046 | } | |
6047 | ||
6048 | return i; | |
6049 | } | |
6050 | ||
a0d76c27 | 6051 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6052 | Scurrent_window_configuration, 0, 1, 0, |
6053 | doc: /* Return an object representing the current window configuration of FRAME. | |
6054 | If FRAME is nil or omitted, use the selected frame. | |
6055 | This describes the number of windows, their sizes and current buffers, | |
6056 | and for each displayed buffer, where display starts, and the positions of | |
6057 | point and mark. An exception is made for point in the current buffer: | |
6058 | its value is -not- saved. | |
6059 | This also records the currently selected frame, and FRAME's focus | |
6060 | redirection (see `redirect-frame-focus'). */) | |
6061 | (frame) | |
44fa5b1e | 6062 | Lisp_Object frame; |
7ab12479 JB |
6063 | { |
6064 | register Lisp_Object tem; | |
6065 | register int n_windows; | |
6066 | register struct save_window_data *data; | |
da2792e0 | 6067 | register struct Lisp_Vector *vec; |
7ab12479 | 6068 | register int i; |
44fa5b1e | 6069 | FRAME_PTR f; |
43bad991 | 6070 | |
44fa5b1e | 6071 | if (NILP (frame)) |
1ae1a37d | 6072 | frame = selected_frame; |
b7826503 | 6073 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6074 | f = XFRAME (frame); |
7ab12479 | 6075 | |
44fa5b1e | 6076 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 6077 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
6078 | data = (struct save_window_data *)vec; |
6079 | ||
949cf20f KS |
6080 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
6081 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 6082 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 6083 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 6084 | data->selected_frame = selected_frame; |
44fa5b1e | 6085 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6086 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6087 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6088 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6089 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6090 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
6091 | XSETINT (data->min_height, window_min_height); |
6092 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
6093 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6094 | data->saved_windows = tem; | |
6095 | for (i = 0; i < n_windows; i++) | |
6096 | XVECTOR (tem)->contents[i] | |
6097 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
a1d58e5b | 6098 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6099 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6100 | return (tem); |
6101 | } | |
6102 | ||
6103 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6104 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6105 | doc: /* Execute BODY, preserving window sizes and contents. |
6106 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6107 | Restore which buffer appears in which window, where display starts, |
6108 | and the value of point and mark for each window. | |
6109 | Also restore the choice of selected window. | |
6110 | Also restore which buffer is current. | |
6924dda6 MB |
6111 | Does not restore the value of point in current buffer. |
6112 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 6113 | (args) |
7ab12479 JB |
6114 | Lisp_Object args; |
6115 | { | |
6116 | register Lisp_Object val; | |
aed13378 | 6117 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6118 | |
6119 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6120 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6121 | val = Fprogn (args); |
6122 | return unbind_to (count, val); | |
6123 | } | |
5500c422 GM |
6124 | |
6125 | \f | |
6126 | /*********************************************************************** | |
6127 | Marginal Areas | |
6128 | ***********************************************************************/ | |
6129 | ||
6130 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6131 | 2, 3, 0, |
fdb82f93 | 6132 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6133 | If WINDOW is nil, set margins of the currently selected window. |
6134 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6135 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6136 | does the same for the right marginal area. A nil width parameter | |
6137 | means no margin. */) | |
fdb82f93 | 6138 | (window, left, right) |
5500c422 GM |
6139 | Lisp_Object window, left, right; |
6140 | { | |
6141 | struct window *w = decode_window (window); | |
5500c422 | 6142 | |
6b61353c KH |
6143 | /* Translate negative or zero widths to nil. |
6144 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6145 | |
5500c422 | 6146 | if (!NILP (left)) |
6b61353c KH |
6147 | { |
6148 | CHECK_NUMBER (left); | |
6149 | if (XINT (left) <= 0) | |
6150 | left = Qnil; | |
6151 | } | |
5500c422 | 6152 | |
6b61353c KH |
6153 | if (!NILP (right)) |
6154 | { | |
6155 | CHECK_NUMBER (right); | |
6156 | if (XINT (right) <= 0) | |
6157 | right = Qnil; | |
6158 | } | |
5500c422 | 6159 | |
949cf20f KS |
6160 | if (!EQ (w->left_margin_cols, left) |
6161 | || !EQ (w->right_margin_cols, right)) | |
6162 | { | |
6163 | w->left_margin_cols = left; | |
6164 | w->right_margin_cols = right; | |
6165 | ||
6166 | adjust_window_margins (w); | |
6167 | ||
6168 | ++windows_or_buffers_changed; | |
6169 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6170 | } | |
5500c422 | 6171 | |
5500c422 GM |
6172 | return Qnil; |
6173 | } | |
6174 | ||
6175 | ||
6176 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6177 | 0, 1, 0, | |
fdb82f93 PJ |
6178 | doc: /* Get width of marginal areas of window WINDOW. |
6179 | If WINDOW is omitted or nil, use the currently selected window. | |
6180 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6181 | If a marginal area does not exist, its width will be returned | |
6182 | as nil. */) | |
6183 | (window) | |
5500c422 GM |
6184 | Lisp_Object window; |
6185 | { | |
6186 | struct window *w = decode_window (window); | |
949cf20f KS |
6187 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6188 | } | |
6189 | ||
6190 | ||
6191 | \f | |
6192 | /*********************************************************************** | |
6193 | Fringes | |
6194 | ***********************************************************************/ | |
6195 | ||
6196 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6197 | 2, 4, 0, | |
6b61353c KH |
6198 | doc: /* Set the fringe widths of window WINDOW. |
6199 | If WINDOW is nil, set the fringe widths of the currently selected | |
6200 | window. | |
6201 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6202 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6203 | fringe width. If a fringe width arg is nil, that means to use the | |
6204 | frame's default fringe width. Default fringe widths can be set with | |
6205 | the command `set-fringe-style'. | |
6206 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6207 | outside of the display margins. By default, fringes are drawn between | |
6208 | display marginal areas and the text area. */) | |
949cf20f KS |
6209 | (window, left, right, outside_margins) |
6210 | Lisp_Object window, left, right, outside_margins; | |
6211 | { | |
6212 | struct window *w = decode_window (window); | |
6213 | ||
6214 | if (!NILP (left)) | |
cb639b8f | 6215 | CHECK_NATNUM (left); |
949cf20f | 6216 | if (!NILP (right)) |
cb639b8f | 6217 | CHECK_NATNUM (right); |
949cf20f KS |
6218 | |
6219 | if (!EQ (w->left_fringe_width, left) | |
6220 | || !EQ (w->right_fringe_width, right) | |
6221 | || !EQ (w->fringes_outside_margins, outside_margins)) | |
6222 | { | |
6223 | w->left_fringe_width = left; | |
6224 | w->right_fringe_width = right; | |
6225 | w->fringes_outside_margins = outside_margins; | |
6226 | ||
6227 | adjust_window_margins (w); | |
6228 | ||
6229 | clear_glyph_matrix (w->current_matrix); | |
6230 | w->window_end_valid = Qnil; | |
6231 | ||
6232 | ++windows_or_buffers_changed; | |
6233 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6234 | } | |
6235 | ||
6236 | return Qnil; | |
6237 | } | |
6238 | ||
6239 | ||
6240 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6241 | 0, 1, 0, | |
6242 | doc: /* Get width of fringes of window WINDOW. | |
6243 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6244 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6245 | (window) |
6246 | Lisp_Object window; | |
6247 | { | |
6248 | struct window *w = decode_window (window); | |
6249 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), | |
6250 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6251 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? | |
6252 | Qt : Qnil), Qnil))); | |
6253 | } | |
6254 | ||
6255 | ||
6256 | \f | |
6257 | /*********************************************************************** | |
6258 | Scroll bars | |
6259 | ***********************************************************************/ | |
6260 | ||
6261 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6262 | 2, 4, 0, | |
6263 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6264 | If window is nil, set scroll bars of the currently selected window. | |
6265 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6266 | this is automatically adjusted to a multiple of the frame column width. | |
6267 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6268 | bar: left, right, or nil. | |
6b61353c KH |
6269 | If WIDTH is nil, use the frame's scroll-bar width. |
6270 | If TYPE is t, use the frame's scroll-bar type. */) | |
79fd290e JB |
6271 | (window, width, vertical_type, horizontal_type) |
6272 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6273 | { |
6274 | struct window *w = decode_window (window); | |
6275 | ||
6276 | if (!NILP (width)) | |
0f8fe9a2 SM |
6277 | { |
6278 | CHECK_NATNUM (width); | |
949cf20f | 6279 | |
0f8fe9a2 SM |
6280 | if (XINT (width) == 0) |
6281 | vertical_type = Qnil; | |
6282 | } | |
949cf20f | 6283 | |
6b61353c | 6284 | if (!(EQ (vertical_type, Qnil) |
0cc1039f | 6285 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6286 | || EQ (vertical_type, Qright) |
6287 | || EQ (vertical_type, Qt))) | |
6288 | error ("Invalid type of vertical scroll bar"); | |
6289 | ||
949cf20f KS |
6290 | if (!EQ (w->scroll_bar_width, width) |
6291 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6292 | { | |
6293 | w->scroll_bar_width = width; | |
6294 | w->vertical_scroll_bar_type = vertical_type; | |
6295 | ||
6296 | adjust_window_margins (w); | |
6297 | ||
6298 | clear_glyph_matrix (w->current_matrix); | |
6299 | w->window_end_valid = Qnil; | |
6300 | ||
6301 | ++windows_or_buffers_changed; | |
6302 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6303 | } | |
6304 | ||
6305 | return Qnil; | |
6306 | } | |
6307 | ||
6308 | ||
6309 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6310 | 0, 1, 0, | |
6311 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6312 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6313 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6314 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6315 | value. */) | |
949cf20f KS |
6316 | (window) |
6317 | Lisp_Object window; | |
6318 | { | |
6319 | struct window *w = decode_window (window); | |
6320 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6321 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6322 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6323 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6324 | Fcons (w->vertical_scroll_bar_type, | |
6325 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6326 | } |
6327 | ||
6328 | ||
7ab12479 | 6329 | \f |
5500c422 GM |
6330 | /*********************************************************************** |
6331 | Smooth scrolling | |
6332 | ***********************************************************************/ | |
6333 | ||
0cc1039f | 6334 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6335 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6336 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f KS |
6337 | Normally, value is a multiple of the canonical character height of WINDOW; |
6338 | optional second arg PIXELS_P means value is measured in pixels. */) | |
6339 | (window, pixels_p) | |
6340 | Lisp_Object window, pixels_p; | |
5500c422 | 6341 | { |
47004952 | 6342 | Lisp_Object result; |
5500c422 GM |
6343 | struct frame *f; |
6344 | struct window *w; | |
177c0ea7 | 6345 | |
5500c422 GM |
6346 | if (NILP (window)) |
6347 | window = selected_window; | |
47004952 | 6348 | else |
b7826503 | 6349 | CHECK_WINDOW (window); |
5500c422 GM |
6350 | w = XWINDOW (window); |
6351 | f = XFRAME (w->frame); | |
177c0ea7 | 6352 | |
5500c422 | 6353 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6354 | result = (NILP (pixels_p) |
6355 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6356 | : make_number (-w->vscroll)); | |
5500c422 | 6357 | else |
47004952 GM |
6358 | result = make_number (0); |
6359 | return result; | |
5500c422 GM |
6360 | } |
6361 | ||
6362 | ||
6363 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6364 | 2, 3, 0, |
fdb82f93 | 6365 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6366 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6367 | non-negative multiple of the canonical character height of WINDOW; | |
a0a37a6f LT |
6368 | optional third arg PIXELS_P non-nil means that VSCROLL is in pixels. |
6369 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it | |
6370 | corresponds to an integral number of pixels. The return value is the | |
6371 | result of this rounding. | |
6372 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6373 | (window, vscroll, pixels_p) |
6374 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6375 | { |
6376 | struct window *w; | |
6377 | struct frame *f; | |
177c0ea7 | 6378 | |
5500c422 GM |
6379 | if (NILP (window)) |
6380 | window = selected_window; | |
47004952 | 6381 | else |
b7826503 PJ |
6382 | CHECK_WINDOW (window); |
6383 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6384 | |
5500c422 GM |
6385 | w = XWINDOW (window); |
6386 | f = XFRAME (w->frame); | |
6387 | ||
6388 | if (FRAME_WINDOW_P (f)) | |
6389 | { | |
6390 | int old_dy = w->vscroll; | |
177c0ea7 | 6391 | |
0cc1039f KS |
6392 | w->vscroll = - (NILP (pixels_p) |
6393 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6394 | : XFLOATINT (vscroll)); | |
47004952 | 6395 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6396 | |
e56263e5 KS |
6397 | if (w->vscroll != old_dy) |
6398 | { | |
6399 | /* Adjust glyph matrix of the frame if the virtual display | |
6400 | area becomes larger than before. */ | |
6401 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6402 | adjust_glyphs (f); | |
177c0ea7 | 6403 | |
e56263e5 KS |
6404 | /* Prevent redisplay shortcuts. */ |
6405 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6406 | } | |
5500c422 | 6407 | } |
177c0ea7 | 6408 | |
0cc1039f | 6409 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6410 | } |
177c0ea7 | 6411 | |
7bbb5782 GM |
6412 | \f |
6413 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6414 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6415 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6416 | |
6417 | void | |
f95464e4 | 6418 | foreach_window (f, fn, user_data) |
7bbb5782 | 6419 | struct frame *f; |
f95464e4 GM |
6420 | int (* fn) P_ ((struct window *, void *)); |
6421 | void *user_data; | |
7bbb5782 | 6422 | { |
f95464e4 | 6423 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
6424 | } |
6425 | ||
6426 | ||
6427 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6428 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6429 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6430 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6431 | |
67492200 | 6432 | static int |
f95464e4 | 6433 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 6434 | struct window *w; |
f95464e4 GM |
6435 | int (* fn) P_ ((struct window *, void *)); |
6436 | void *user_data; | |
7bbb5782 | 6437 | { |
67492200 | 6438 | int cont; |
177c0ea7 | 6439 | |
67492200 | 6440 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6441 | { |
6442 | if (!NILP (w->hchild)) | |
f95464e4 | 6443 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6444 | else if (!NILP (w->vchild)) |
f95464e4 | 6445 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6446 | else |
0f532a9a | 6447 | cont = fn (w, user_data); |
177c0ea7 | 6448 | |
7bbb5782 GM |
6449 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6450 | } | |
67492200 GM |
6451 | |
6452 | return cont; | |
7bbb5782 GM |
6453 | } |
6454 | ||
6455 | ||
6d194a45 | 6456 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6457 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6458 | the window start. */ |
6459 | ||
67492200 | 6460 | static int |
7bbb5782 GM |
6461 | freeze_window_start (w, freeze_p) |
6462 | struct window *w; | |
f95464e4 | 6463 | void *freeze_p; |
7bbb5782 GM |
6464 | { |
6465 | if (w == XWINDOW (selected_window) | |
6466 | || MINI_WINDOW_P (w) | |
6467 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 6468 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 6469 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 6470 | freeze_p = NULL; |
177c0ea7 | 6471 | |
f95464e4 | 6472 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6473 | return 1; |
7bbb5782 GM |
6474 | } |
6475 | ||
6476 | ||
6477 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6478 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6479 | means freeze the window start. */ | |
6480 | ||
6481 | void | |
6482 | freeze_window_starts (f, freeze_p) | |
6483 | struct frame *f; | |
6484 | int freeze_p; | |
6485 | { | |
cbccabec | 6486 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6487 | } |
5500c422 GM |
6488 | |
6489 | \f | |
6490 | /*********************************************************************** | |
6491 | Initialization | |
6492 | ***********************************************************************/ | |
6493 | ||
cbff28e8 RS |
6494 | /* Return 1 if window configurations C1 and C2 |
6495 | describe the same state of affairs. This is used by Fequal. */ | |
6496 | ||
6497 | int | |
2f8274be | 6498 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 6499 | Lisp_Object c1, c2; |
2f8274be | 6500 | int ignore_positions; |
cbff28e8 RS |
6501 | { |
6502 | register struct save_window_data *d1, *d2; | |
6503 | struct Lisp_Vector *sw1, *sw2; | |
6504 | int i; | |
6505 | ||
4d3edcb4 GM |
6506 | if (!WINDOW_CONFIGURATIONP (c1)) |
6507 | wrong_type_argument (Qwindow_configuration_p, c1); | |
6508 | if (!WINDOW_CONFIGURATIONP (c2)) | |
6509 | wrong_type_argument (Qwindow_configuration_p, c2); | |
177c0ea7 | 6510 | |
cbff28e8 RS |
6511 | d1 = (struct save_window_data *) XVECTOR (c1); |
6512 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6513 | sw1 = XVECTOR (d1->saved_windows); | |
6514 | sw2 = XVECTOR (d2->saved_windows); | |
6515 | ||
949cf20f | 6516 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 6517 | return 0; |
949cf20f | 6518 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
6519 | return 0; |
6520 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
6521 | return 0; | |
6522 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6523 | return 0; | |
6524 | /* Don't compare the current_window field directly. | |
6525 | Instead see w1_is_current and w2_is_current, below. */ | |
6526 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6527 | return 0; | |
2f8274be | 6528 | if (! ignore_positions) |
3f49fddc KS |
6529 | { |
6530 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6531 | return 0; | |
6532 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6533 | return 0; | |
6534 | } | |
cbff28e8 RS |
6535 | /* Don't compare the root_window field. |
6536 | We don't require the two configurations | |
6537 | to use the same window object, | |
6538 | and the two root windows must be equivalent | |
6539 | if everything else compares equal. */ | |
6540 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6541 | return 0; | |
6542 | if (! EQ (d1->min_width, d2->min_width)) | |
6543 | return 0; | |
6544 | if (! EQ (d1->min_height, d2->min_height)) | |
6545 | return 0; | |
6546 | ||
6547 | /* Verify that the two confis have the same number of windows. */ | |
6548 | if (sw1->size != sw2->size) | |
6549 | return 0; | |
6550 | ||
6551 | for (i = 0; i < sw1->size; i++) | |
6552 | { | |
6553 | struct saved_window *p1, *p2; | |
6554 | int w1_is_current, w2_is_current; | |
6555 | ||
6556 | p1 = SAVED_WINDOW_N (sw1, i); | |
6557 | p2 = SAVED_WINDOW_N (sw2, i); | |
6558 | ||
6559 | /* Verify that the current windows in the two | |
6560 | configurations correspond to each other. */ | |
6561 | w1_is_current = EQ (d1->current_window, p1->window); | |
6562 | w2_is_current = EQ (d2->current_window, p2->window); | |
6563 | ||
6564 | if (w1_is_current != w2_is_current) | |
6565 | return 0; | |
6566 | ||
6567 | /* Verify that the corresponding windows do match. */ | |
6568 | if (! EQ (p1->buffer, p2->buffer)) | |
6569 | return 0; | |
949cf20f | 6570 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6571 | return 0; |
949cf20f | 6572 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6573 | return 0; |
949cf20f | 6574 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6575 | return 0; |
949cf20f | 6576 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6577 | return 0; |
cbff28e8 RS |
6578 | if (! EQ (p1->display_table, p2->display_table)) |
6579 | return 0; | |
6580 | if (! EQ (p1->parent, p2->parent)) | |
6581 | return 0; | |
6582 | if (! EQ (p1->prev, p2->prev)) | |
6583 | return 0; | |
2f8274be RS |
6584 | if (! ignore_positions) |
6585 | { | |
6586 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6587 | return 0; | |
ea68264b GM |
6588 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6589 | return 0; | |
2f8274be RS |
6590 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6591 | return 0; | |
6592 | if (NILP (Fequal (p1->start, p2->start))) | |
6593 | return 0; | |
6594 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
6595 | return 0; | |
6596 | if (NILP (Fequal (p1->mark, p2->mark))) | |
6597 | return 0; | |
6598 | } | |
949cf20f KS |
6599 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
6600 | return 0; | |
6601 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
6602 | return 0; | |
6603 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
6604 | return 0; | |
6605 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
6606 | return 0; | |
6607 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
6608 | return 0; | |
6609 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
6610 | return 0; | |
6611 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
6612 | return 0; | |
cbff28e8 RS |
6613 | } |
6614 | ||
6615 | return 1; | |
6616 | } | |
2f8274be RS |
6617 | |
6618 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6619 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6620 | doc: /* Compare two window configurations as regards the structure of windows. |
6621 | This function ignores details such as the values of point and mark | |
6622 | and scrolling positions. */) | |
6623 | (x, y) | |
2f8274be RS |
6624 | Lisp_Object x, y; |
6625 | { | |
6626 | if (compare_window_configurations (x, y, 1)) | |
6627 | return Qt; | |
6628 | return Qnil; | |
6629 | } | |
cbff28e8 | 6630 | \f |
dfcf069d | 6631 | void |
7ab12479 JB |
6632 | init_window_once () |
6633 | { | |
1ae1a37d GM |
6634 | struct frame *f = make_terminal_frame (); |
6635 | XSETFRAME (selected_frame, f); | |
6636 | Vterminal_frame = selected_frame; | |
6637 | minibuf_window = f->minibuffer_window; | |
6638 | selected_window = f->selected_window; | |
6639 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6640 | |
6641 | window_initialized = 1; | |
7ab12479 JB |
6642 | } |
6643 | ||
67492200 GM |
6644 | void |
6645 | init_window () | |
6646 | { | |
6647 | Vwindow_list = Qnil; | |
6648 | } | |
6649 | ||
dfcf069d | 6650 | void |
7ab12479 JB |
6651 | syms_of_window () |
6652 | { | |
8a37516b GM |
6653 | Qwindow_size_fixed = intern ("window-size-fixed"); |
6654 | staticpro (&Qwindow_size_fixed); | |
177c0ea7 | 6655 | |
543f5fb1 RS |
6656 | staticpro (&Qwindow_configuration_change_hook); |
6657 | Qwindow_configuration_change_hook | |
6658 | = intern ("window-configuration-change-hook"); | |
6659 | ||
7ab12479 JB |
6660 | Qwindowp = intern ("windowp"); |
6661 | staticpro (&Qwindowp); | |
6662 | ||
3f8ab7bd RS |
6663 | Qwindow_configuration_p = intern ("window-configuration-p"); |
6664 | staticpro (&Qwindow_configuration_p); | |
6665 | ||
806b4d9b JB |
6666 | Qwindow_live_p = intern ("window-live-p"); |
6667 | staticpro (&Qwindow_live_p); | |
605be8af | 6668 | |
2cccc823 | 6669 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
6670 | staticpro (&Qtemp_buffer_show_hook); |
6671 | ||
67492200 | 6672 | staticpro (&Vwindow_list); |
8bfb170b KS |
6673 | |
6674 | minibuf_selected_window = Qnil; | |
3dbab091 | 6675 | staticpro (&minibuf_selected_window); |
67492200 | 6676 | |
7ab12479 | 6677 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
6678 | doc: /* Non-nil means call as function to display a help buffer. |
6679 | The function is called with one argument, the buffer to be displayed. | |
6680 | Used by `with-output-to-temp-buffer'. | |
6681 | If this function is used, then it must do the entire job of showing | |
6682 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
6683 | Vtemp_buffer_show_function = Qnil; |
6684 | ||
6685 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
6686 | doc: /* If non-nil, function to call to handle `display-buffer'. |
6687 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
6688 | that the currently selected window is not acceptable. |
6689 | It should choose or create a window, display the specified buffer in it, | |
6690 | and return the window. | |
fdb82f93 PJ |
6691 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
6692 | work using this function. */); | |
7ab12479 JB |
6693 | Vdisplay_buffer_function = Qnil; |
6694 | ||
6529ed87 | 6695 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
6696 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
6697 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
6698 | Veven_window_heights = Qt; |
6699 | ||
7ab12479 | 6700 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 6701 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6702 | Vminibuf_scroll_window = Qnil; |
6703 | ||
cc91894c | 6704 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 6705 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6706 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6707 | is displayed in the `mode-line' face. */); | |
6708 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6709 | |
7ab12479 | 6710 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 6711 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6712 | Vother_window_scroll_buffer = Qnil; |
6713 | ||
44fa5b1e | 6714 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 6715 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 6716 | pop_up_frames = 0; |
7ab12479 | 6717 | |
e56263e5 KS |
6718 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
6719 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
6720 | auto_window_vscroll_p = 1; | |
6721 | ||
9c3da604 | 6722 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
6723 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
6724 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
6725 | display_buffer_reuse_frames = 0; |
6726 | ||
44fa5b1e | 6727 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
6728 | doc: /* Function to call to handle automatic new frame creation. |
6729 | It is called with no arguments and should return a newly created frame. | |
6730 | ||
6731 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
6732 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 6733 | Vpop_up_frame_function = Qnil; |
7ab12479 | 6734 | |
a90712c2 | 6735 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 PJ |
6736 | doc: /* *List of buffer names that should have their own special frames. |
6737 | Displaying a buffer whose name is in this list makes a special frame for it | |
6738 | using `special-display-function'. See also `special-display-regexps'. | |
6739 | ||
6740 | An element of the list can be a list instead of just a string. | |
6741 | There are two ways to use a list as an element: | |
6742 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
6743 | In the first case, the FRAME-PARAMETERS are pairs of the form |
6744 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
6745 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
6746 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
6747 | All this is done by the function found in `special-display-function'. |
6748 | ||
6b61353c KH |
6749 | If the specified frame parameters include (same-buffer . t), the |
6750 | buffer is displayed in the currently selected window. Otherwise, if | |
6751 | they include (same-frame . t), the buffer is displayed in a new window | |
6752 | in the currently selected frame. | |
6753 | ||
fdb82f93 PJ |
6754 | If this variable appears \"not to work\", because you add a name to it |
6755 | but that buffer still appears in the selected window, look at the | |
6756 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6757 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6758 | Vspecial_display_buffer_names = Qnil; |
6759 | ||
6760 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 PJ |
6761 | doc: /* *List of regexps saying which buffers should have their own special frames. |
6762 | If a buffer name matches one of these regexps, it gets its own frame. | |
6763 | Displaying a buffer whose name is in this list makes a special frame for it | |
6764 | using `special-display-function'. | |
6765 | ||
6766 | An element of the list can be a list instead of just a string. | |
6767 | There are two ways to use a list as an element: | |
6768 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
6769 | In the first case, the FRAME-PARAMETERS are pairs of the form |
6770 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
6771 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
6772 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
6773 | All this is done by the function found in `special-display-function'. |
6774 | ||
6b61353c KH |
6775 | If the specified frame parameters include (same-buffer . t), the |
6776 | buffer is displayed in the currently selected window. Otherwise, if | |
6777 | they include (same-frame . t), the buffer is displayed in a new window | |
6778 | in the currently selected frame. | |
6779 | ||
fdb82f93 PJ |
6780 | If this variable appears \"not to work\", because you add a regexp to it |
6781 | but the matching buffers still appear in the selected window, look at the | |
6782 | values of `same-window-buffer-names' and `same-window-regexps'. | |
6783 | Those variables take precedence over this one. */); | |
a90712c2 RS |
6784 | Vspecial_display_regexps = Qnil; |
6785 | ||
6786 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
6787 | doc: /* Function to call to make a new frame for a special buffer. |
6788 | It is called with two arguments, the buffer and optional buffer specific | |
6789 | data, and should return a window displaying that buffer. | |
a5731348 SM |
6790 | The default value normally makes a separate frame for the buffer, |
6791 | using `special-display-frame-alist' to specify the frame parameters. | |
6792 | But if the buffer specific data includes (same-buffer . t) then the | |
6793 | buffer is displayed in the current selected window. | |
6794 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
6795 | a new window in the currently selected frame. | |
6796 | ||
6797 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 6798 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
6799 | Vspecial_display_function = Qnil; |
6800 | ||
855d8627 | 6801 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
6802 | doc: /* *List of buffer names that should appear in the selected window. |
6803 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
6804 | switches to it in the selected window, rather than making it appear | |
6805 | in some other window. | |
6806 | ||
6807 | An element of the list can be a cons cell instead of just a string. | |
6808 | Then the car must be a string, which specifies the buffer name. | |
6809 | This is for compatibility with `special-display-buffer-names'; | |
6810 | the cdr of the cons cell is ignored. | |
6811 | ||
6812 | See also `same-window-regexps'. */); | |
855d8627 RS |
6813 | Vsame_window_buffer_names = Qnil; |
6814 | ||
6815 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
6816 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
6817 | If a buffer name matches one of these regexps, then displaying it | |
6818 | using `display-buffer' or `pop-to-buffer' switches to it | |
6819 | in the selected window, rather than making it appear in some other window. | |
6820 | ||
6821 | An element of the list can be a cons cell instead of just a string. | |
6822 | Then the car must be a string, which specifies the buffer name. | |
6823 | This is for compatibility with `special-display-buffer-names'; | |
6824 | the cdr of the cons cell is ignored. | |
6825 | ||
6826 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
6827 | Vsame_window_regexps = Qnil; |
6828 | ||
7ab12479 | 6829 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 6830 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
6831 | pop_up_windows = 1; |
6832 | ||
6833 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 6834 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6835 | next_screen_context_lines = 2; |
6836 | ||
6837 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
876e2665 | 6838 | doc: /* *A window must be at least this tall to be eligible for splitting by `display-buffer'. |
fdb82f93 | 6839 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
6840 | split_height_threshold = 500; |
6841 | ||
6842 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 6843 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
6844 | window_min_height = 4; |
6845 | ||
6846 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 6847 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
6848 | window_min_width = 10; |
6849 | ||
5500c422 GM |
6850 | DEFVAR_LISP ("scroll-preserve-screen-position", |
6851 | &Vscroll_preserve_screen_position, | |
940f53e5 RS |
6852 | doc: /* *Non-nil means scroll commands move point to keep its screen line unchanged. |
6853 | This is only when it is impossible to keep point fixed and still | |
6854 | scroll as specified. */); | |
5500c422 | 6855 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6856 | |
543f5fb1 RS |
6857 | DEFVAR_LISP ("window-configuration-change-hook", |
6858 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
6859 | doc: /* Functions to call when window configuration changes. |
6860 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
6861 | Vwindow_configuration_change_hook = Qnil; |
6862 | ||
b0b7ed0e | 6863 | DEFVAR_BOOL ("window-size-fixed", &window_size_fixed, |
fdb82f93 | 6864 | doc: /* Non-nil in a buffer means windows displaying the buffer are fixed-size. |
a0a37a6f LT |
6865 | If the value is`height', then only the window's height is fixed. |
6866 | If the value is `width', then only the window's width is fixed. | |
6867 | Any other non-nil value fixes both the width and the height. | |
fdb82f93 | 6868 | Emacs won't change the size of any window displaying that buffer, |
a0a37a6f | 6869 | unless you explicitly change the size, or Emacs has no other choice. */); |
b0b7ed0e GM |
6870 | Fmake_variable_buffer_local (Qwindow_size_fixed); |
6871 | window_size_fixed = 0; | |
6872 | ||
7ab12479 JB |
6873 | defsubr (&Sselected_window); |
6874 | defsubr (&Sminibuffer_window); | |
6875 | defsubr (&Swindow_minibuffer_p); | |
6876 | defsubr (&Swindowp); | |
806b4d9b | 6877 | defsubr (&Swindow_live_p); |
7ab12479 JB |
6878 | defsubr (&Spos_visible_in_window_p); |
6879 | defsubr (&Swindow_buffer); | |
6880 | defsubr (&Swindow_height); | |
6881 | defsubr (&Swindow_width); | |
6882 | defsubr (&Swindow_hscroll); | |
6883 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6884 | defsubr (&Swindow_redisplay_end_trigger); |
6885 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6886 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
6887 | defsubr (&Swindow_pixel_edges); |
6888 | defsubr (&Swindow_inside_edges); | |
6889 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
6890 | defsubr (&Scoordinates_in_window_p); |
6891 | defsubr (&Swindow_at); | |
7ab12479 JB |
6892 | defsubr (&Swindow_point); |
6893 | defsubr (&Swindow_start); | |
6894 | defsubr (&Swindow_end); | |
6895 | defsubr (&Sset_window_point); | |
6896 | defsubr (&Sset_window_start); | |
6897 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6898 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6899 | defsubr (&Swindow_display_table); |
6900 | defsubr (&Sset_window_display_table); | |
6901 | defsubr (&Snext_window); | |
6902 | defsubr (&Sprevious_window); | |
6903 | defsubr (&Sother_window); | |
6904 | defsubr (&Sget_lru_window); | |
6905 | defsubr (&Sget_largest_window); | |
6906 | defsubr (&Sget_buffer_window); | |
6907 | defsubr (&Sdelete_other_windows); | |
6908 | defsubr (&Sdelete_windows_on); | |
6909 | defsubr (&Sreplace_buffer_in_windows); | |
6910 | defsubr (&Sdelete_window); | |
6911 | defsubr (&Sset_window_buffer); | |
6912 | defsubr (&Sselect_window); | |
4628f7a4 EN |
6913 | defsubr (&Sspecial_display_p); |
6914 | defsubr (&Ssame_window_p); | |
7ab12479 | 6915 | defsubr (&Sdisplay_buffer); |
6b61353c | 6916 | defsubr (&Sforce_window_update); |
7ab12479 JB |
6917 | defsubr (&Ssplit_window); |
6918 | defsubr (&Senlarge_window); | |
6919 | defsubr (&Sshrink_window); | |
6920 | defsubr (&Sscroll_up); | |
6921 | defsubr (&Sscroll_down); | |
6922 | defsubr (&Sscroll_left); | |
6923 | defsubr (&Sscroll_right); | |
ccd0664b | 6924 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6925 | defsubr (&Sscroll_other_window); |
fa832261 | 6926 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6927 | defsubr (&Srecenter); |
81fe0836 | 6928 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6929 | defsubr (&Smove_to_window_line); |
6930 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6931 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6932 | defsubr (&Sset_window_configuration); |
6933 | defsubr (&Scurrent_window_configuration); | |
6934 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
6935 | defsubr (&Sset_window_margins); |
6936 | defsubr (&Swindow_margins); | |
949cf20f KS |
6937 | defsubr (&Sset_window_fringes); |
6938 | defsubr (&Swindow_fringes); | |
6939 | defsubr (&Sset_window_scroll_bars); | |
6940 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6941 | defsubr (&Swindow_vscroll); |
6942 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6943 | defsubr (&Scompare_window_configurations); |
67492200 | 6944 | defsubr (&Swindow_list); |
7ab12479 JB |
6945 | } |
6946 | ||
dfcf069d | 6947 | void |
7ab12479 JB |
6948 | keys_of_window () |
6949 | { | |
6950 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
6951 | initial_define_key (control_x_map, '2', "split-window"); | |
6952 | initial_define_key (control_x_map, '0', "delete-window"); | |
6953 | initial_define_key (control_x_map, 'o', "other-window"); | |
6954 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
6955 | initial_define_key (control_x_map, '<', "scroll-left"); | |
6956 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6957 | ||
6958 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
6959 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
6960 | initial_define_key (meta_map, 'v', "scroll-down"); | |
6961 | ||
6962 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
6963 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
6964 | } | |
6b61353c KH |
6965 | |
6966 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
6967 | (do not change this comment) */ |