Commit | Line | Data |
---|---|---|
7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
203eb0aa | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
aaef169d | 4 | 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1113d9db | 10 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
7ab12479 | 22 | |
18160b98 | 23 | #include <config.h> |
7ab12479 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
3e4731a3 | 26 | #include "keyboard.h" |
e35f6ff7 | 27 | #include "keymap.h" |
44fa5b1e | 28 | #include "frame.h" |
7ab12479 JB |
29 | #include "window.h" |
30 | #include "commands.h" | |
31 | #include "indent.h" | |
32 | #include "termchar.h" | |
33 | #include "disptab.h" | |
dfcf069d | 34 | #include "dispextern.h" |
5500c422 GM |
35 | #include "blockinput.h" |
36 | #include "intervals.h" | |
37 | ||
6d55d620 | 38 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 39 | #include "xterm.h" |
5500c422 | 40 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
41 | #ifdef WINDOWSNT |
42 | #include "w32term.h" | |
43 | #endif | |
1e3c8885 EZ |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #endif | |
e0f712ba | 47 | #ifdef MAC_OS |
1a578e9b AC |
48 | #include "macterm.h" |
49 | #endif | |
5500c422 | 50 | |
5500c422 | 51 | |
3f8ab7bd | 52 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
c525d842 | 53 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 54 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 55 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 56 | |
521b203e | 57 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 58 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
59 | static int count_windows P_ ((struct window *)); |
60 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
61 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
62 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
63 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 64 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 65 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 66 | static void size_window P_ ((Lisp_Object, int, int, int)); |
f95464e4 | 67 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 68 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 69 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 70 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 71 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
72 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
73 | Lisp_Object)); | |
67492200 GM |
74 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
75 | Lisp_Object, int)); | |
76 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
77 | Lisp_Object *)); | |
f95464e4 GM |
78 | static int foreach_window_1 P_ ((struct window *, |
79 | int (* fn) (struct window *, void *), | |
80 | void *)); | |
cd2904bd | 81 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 82 | |
7ab12479 JB |
83 | /* This is the window in which the terminal's cursor should |
84 | be left when nothing is being done with it. This must | |
85 | always be a leaf window, and its buffer is selected by | |
86 | the top level editing loop at the end of each command. | |
87 | ||
88 | This value is always the same as | |
44fa5b1e | 89 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
90 | |
91 | Lisp_Object selected_window; | |
92 | ||
67492200 GM |
93 | /* A list of all windows for use by next_window and Fwindow_list. |
94 | Functions creating or deleting windows should invalidate this cache | |
95 | by setting it to nil. */ | |
96 | ||
97 | Lisp_Object Vwindow_list; | |
98 | ||
5500c422 GM |
99 | /* The mini-buffer window of the selected frame. |
100 | Note that you cannot test for mini-bufferness of an arbitrary window | |
101 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 102 | the selected window. */ |
5500c422 | 103 | |
7ab12479 JB |
104 | Lisp_Object minibuf_window; |
105 | ||
3f49fddc KS |
106 | /* Non-nil means it is the window whose mode line should be |
107 | shown as the selected window when the minibuffer is selected. */ | |
108 | ||
3dbab091 | 109 | Lisp_Object minibuf_selected_window; |
3f49fddc | 110 | |
7ab12479 | 111 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
112 | when the mini-buffer is selected. */ |
113 | ||
7ab12479 JB |
114 | Lisp_Object Vminibuf_scroll_window; |
115 | ||
116 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 117 | |
7ab12479 JB |
118 | Lisp_Object Vother_window_scroll_buffer; |
119 | ||
7ab12479 | 120 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 121 | |
7ab12479 JB |
122 | Lisp_Object Vtemp_buffer_show_function; |
123 | ||
e56263e5 KS |
124 | /* Non-zero means line and page scrolling on tall lines (with images) |
125 | does partial scrolling by modifying window-vscroll. */ | |
126 | ||
127 | int auto_window_vscroll_p; | |
128 | ||
cc91894c KS |
129 | /* Non-zero means to use mode-line-inactive face in all windows but the |
130 | selected-window and the minibuffer-scroll-window when the | |
131 | minibuffer is active. */ | |
132 | int mode_line_in_non_selected_windows; | |
26124d5e | 133 | |
7ab12479 | 134 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 135 | |
31ade731 SM |
136 | EMACS_INT window_min_height; |
137 | EMACS_INT window_min_width; | |
7ab12479 JB |
138 | |
139 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 140 | |
7ab12479 JB |
141 | int pop_up_windows; |
142 | ||
44fa5b1e | 143 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 144 | |
44fa5b1e | 145 | int pop_up_frames; |
7ab12479 | 146 | |
9c3da604 GM |
147 | /* Nonzero means reuse existing frames for displaying buffers. */ |
148 | ||
149 | int display_buffer_reuse_frames; | |
150 | ||
7ab12479 | 151 | /* Non-nil means use this function instead of default */ |
5500c422 | 152 | |
44fa5b1e | 153 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
154 | |
155 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 156 | |
7ab12479 JB |
157 | Lisp_Object Vdisplay_buffer_function; |
158 | ||
6529ed87 GM |
159 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
160 | ||
161 | Lisp_Object Veven_window_heights; | |
162 | ||
a90712c2 | 163 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 164 | |
a90712c2 RS |
165 | Lisp_Object Vspecial_display_buffer_names; |
166 | ||
167 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 168 | |
a90712c2 RS |
169 | Lisp_Object Vspecial_display_regexps; |
170 | ||
171 | /* Function to pop up a special frame. */ | |
5500c422 | 172 | |
a90712c2 RS |
173 | Lisp_Object Vspecial_display_function; |
174 | ||
855d8627 | 175 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 176 | |
855d8627 RS |
177 | Lisp_Object Vsame_window_buffer_names; |
178 | ||
179 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 180 | |
855d8627 RS |
181 | Lisp_Object Vsame_window_regexps; |
182 | ||
a58ec57d | 183 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 184 | |
a58ec57d RS |
185 | Lisp_Object Qtemp_buffer_show_hook; |
186 | ||
37962e60 | 187 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 188 | if that window is more than this high. */ |
5500c422 | 189 | |
31ade731 | 190 | EMACS_INT split_height_threshold; |
7ab12479 JB |
191 | |
192 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 193 | |
31ade731 | 194 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
195 | |
196 | /* Incremented for each window created. */ | |
5500c422 | 197 | |
7ab12479 JB |
198 | static int sequence_number; |
199 | ||
5b03d3c0 | 200 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 201 | |
5b03d3c0 RS |
202 | static int window_initialized; |
203 | ||
543f5fb1 | 204 | /* Hook to run when window config changes. */ |
5500c422 | 205 | |
543f5fb1 RS |
206 | Lisp_Object Qwindow_configuration_change_hook; |
207 | Lisp_Object Vwindow_configuration_change_hook; | |
208 | ||
d0c38d63 | 209 | /* Non-nil means scroll commands try to put point |
9317a85d | 210 | at the same screen height as previously. */ |
9317a85d | 211 | |
5500c422 GM |
212 | Lisp_Object Vscroll_preserve_screen_position; |
213 | ||
0d384044 RS |
214 | /* Incremented by 1 whenever a window is deleted. */ |
215 | ||
216 | int window_deletion_count; | |
217 | ||
66d43aea LT |
218 | /* Used by the function window_scroll_pixel_based */ |
219 | ||
66fe93d1 | 220 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 221 | |
5500c422 | 222 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 223 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 224 | static int inhibit_frame_unsplittable; |
5500c422 | 225 | #endif /* 0 */ |
7d601aaa | 226 | |
31ade731 | 227 | extern EMACS_INT scroll_margin; |
9317a85d | 228 | |
dba06815 | 229 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
230 | \f |
231 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
232 | doc: /* Returns t if OBJECT is a window. */) |
233 | (object) | |
413430c5 | 234 | Lisp_Object object; |
7ab12479 | 235 | { |
413430c5 | 236 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
237 | } |
238 | ||
806b4d9b | 239 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 240 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
241 | (object) |
242 | Lisp_Object object; | |
605be8af | 243 | { |
9e571f49 | 244 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
245 | } |
246 | ||
7ab12479 JB |
247 | Lisp_Object |
248 | make_window () | |
249 | { | |
cffec418 | 250 | Lisp_Object val; |
7ab12479 | 251 | register struct window *p; |
cffec418 | 252 | |
26605be9 | 253 | p = allocate_window (); |
2a1893f4 SM |
254 | ++sequence_number; |
255 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
256 | XSETFASTINT (p->left_col, 0); |
257 | XSETFASTINT (p->top_line, 0); | |
258 | XSETFASTINT (p->total_lines, 0); | |
259 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 260 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 261 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 262 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
263 | p->start = Fmake_marker (); |
264 | p->pointm = Fmake_marker (); | |
d834a2e9 | 265 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 266 | p->frame = Qnil; |
7ab12479 JB |
267 | p->display_table = Qnil; |
268 | p->dedicated = Qnil; | |
5500c422 GM |
269 | p->pseudo_window_p = 0; |
270 | bzero (&p->cursor, sizeof (p->cursor)); | |
271 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
272 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
273 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 274 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 275 | p->phys_cursor_type = -1; |
4b26579e | 276 | p->phys_cursor_width = -1; |
5500c422 GM |
277 | p->must_be_updated_p = 0; |
278 | XSETFASTINT (p->window_end_vpos, 0); | |
279 | XSETFASTINT (p->window_end_pos, 0); | |
280 | p->window_end_valid = Qnil; | |
281 | p->vscroll = 0; | |
cffec418 | 282 | XSETWINDOW (val, p); |
5500c422 | 283 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 284 | p->frozen_window_start_p = 0; |
6b448755 | 285 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
286 | p->left_margin_cols = Qnil; |
287 | p->right_margin_cols = Qnil; | |
288 | p->left_fringe_width = Qnil; | |
289 | p->right_fringe_width = Qnil; | |
290 | p->fringes_outside_margins = Qnil; | |
291 | p->scroll_bar_width = Qnil; | |
292 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
293 | |
294 | Vwindow_list = Qnil; | |
7ab12479 JB |
295 | return val; |
296 | } | |
297 | ||
298 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
299 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
300 | () | |
7ab12479 JB |
301 | { |
302 | return selected_window; | |
303 | } | |
304 | ||
83762ba4 | 305 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
306 | doc: /* Return the window used now for minibuffers. |
307 | If the optional argument FRAME is specified, return the minibuffer window | |
308 | used by that frame. */) | |
309 | (frame) | |
83762ba4 | 310 | Lisp_Object frame; |
7ab12479 | 311 | { |
83762ba4 | 312 | if (NILP (frame)) |
1ae1a37d | 313 | frame = selected_frame; |
b7826503 | 314 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 315 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
316 | } |
317 | ||
605be8af | 318 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
29a831f8 LT |
319 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
320 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 321 | (window) |
7ab12479 JB |
322 | Lisp_Object window; |
323 | { | |
324 | struct window *w = decode_window (window); | |
53bb6b99 | 325 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
326 | } |
327 | ||
328 | ||
7ab12479 | 329 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 330 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 331 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
332 | Return nil if that position is scrolled vertically out of view. |
333 | If a character is only partially visible, nil is returned, unless the | |
334 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 335 | If POS is only out of view because of horizontal scrolling, return non-nil. |
0cc1039f KS |
336 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
337 | ||
338 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5b1ba1e3 KS |
339 | return value is a list (X Y PARTIAL) where X and Y are the pixel coordinates |
340 | relative to the top left corner of the window. PARTIAL is nil if the character | |
341 | after POS is fully visible; otherwise it is a cons (RTOP . RBOT) where RTOP | |
342 | and RBOT are the number of pixels invisible at the top and bottom of the row. */) | |
fdb82f93 | 343 | (pos, window, partially) |
5cdb3cf3 | 344 | Lisp_Object pos, window, partially; |
7ab12479 JB |
345 | { |
346 | register struct window *w; | |
7ab12479 JB |
347 | register int posint; |
348 | register struct buffer *buf; | |
9a132b1f | 349 | struct text_pos top; |
0cc1039f | 350 | Lisp_Object in_window = Qnil; |
e56263e5 | 351 | int rtop, rbot, fully_p = 1; |
0cc1039f | 352 | int x, y; |
7ab12479 | 353 | |
f28b75a9 MB |
354 | w = decode_window (window); |
355 | buf = XBUFFER (w->buffer); | |
356 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
357 | ||
358 | if (!NILP (pos)) | |
7ab12479 | 359 | { |
b7826503 | 360 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
361 | posint = XINT (pos); |
362 | } | |
f28b75a9 MB |
363 | else if (w == XWINDOW (selected_window)) |
364 | posint = PT; | |
365 | else | |
366 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 367 | |
0cc1039f KS |
368 | /* If position is above window start or outside buffer boundaries, |
369 | or if window start is out of range, position is not visible. */ | |
370 | if (posint >= CHARPOS (top) | |
371 | && posint <= BUF_ZV (buf) | |
372 | && CHARPOS (top) >= BUF_BEGV (buf) | |
373 | && CHARPOS (top) <= BUF_ZV (buf) | |
e56263e5 KS |
374 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, NILP (partially)) |
375 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
0cc1039f KS |
376 | in_window = Qt; |
377 | ||
378 | if (!NILP (in_window) && !NILP (partially)) | |
379 | in_window = Fcons (make_number (x), | |
380 | Fcons (make_number (y), | |
5b1ba1e3 KS |
381 | Fcons ((fully_p ? Qnil |
382 | : Fcons (make_number (rtop), | |
383 | make_number (rbot))), | |
384 | Qnil))); | |
9a132b1f | 385 | return in_window; |
7ab12479 | 386 | } |
53bb6b99 | 387 | |
7ab12479 JB |
388 | \f |
389 | static struct window * | |
390 | decode_window (window) | |
391 | register Lisp_Object window; | |
392 | { | |
265a9e55 | 393 | if (NILP (window)) |
7ab12479 JB |
394 | return XWINDOW (selected_window); |
395 | ||
b7826503 | 396 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
397 | return XWINDOW (window); |
398 | } | |
399 | ||
e995d23a RS |
400 | static struct window * |
401 | decode_any_window (window) | |
402 | register Lisp_Object window; | |
403 | { | |
404 | if (NILP (window)) | |
405 | return XWINDOW (selected_window); | |
406 | ||
407 | CHECK_WINDOW (window); | |
408 | return XWINDOW (window); | |
409 | } | |
410 | ||
7ab12479 | 411 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
412 | doc: /* Return the buffer that WINDOW is displaying. |
413 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 414 | (window) |
7ab12479 JB |
415 | Lisp_Object window; |
416 | { | |
417 | return decode_window (window)->buffer; | |
418 | } | |
419 | ||
420 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
421 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
422 | (window) | |
7ab12479 JB |
423 | Lisp_Object window; |
424 | { | |
e995d23a | 425 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
426 | } |
427 | ||
428 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
429 | doc: /* Return the number of display columns in WINDOW. |
430 | This is the width that is usable columns available for text in WINDOW. | |
431 | If you want to find out how many columns WINDOW takes up, | |
432 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
433 | (window) | |
7ab12479 JB |
434 | Lisp_Object window; |
435 | { | |
e995d23a | 436 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
437 | } |
438 | ||
439 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
440 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
441 | (window) | |
7ab12479 JB |
442 | Lisp_Object window; |
443 | { | |
444 | return decode_window (window)->hscroll; | |
445 | } | |
446 | ||
447 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 448 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 449 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
450 | |
451 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
452 | window so that the location of point becomes invisible. */) | |
fdb82f93 | 453 | (window, ncol) |
ea68264b | 454 | Lisp_Object window, ncol; |
7ab12479 | 455 | { |
ea68264b GM |
456 | struct window *w = decode_window (window); |
457 | int hscroll; | |
7ab12479 | 458 | |
b7826503 | 459 | CHECK_NUMBER (ncol); |
ea68264b | 460 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 461 | |
ea68264b GM |
462 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
463 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 464 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 465 | |
c67fa410 | 466 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
467 | return ncol; |
468 | } | |
469 | ||
190eb263 RS |
470 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
471 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
472 | doc: /* Return WINDOW's redisplay end trigger value. |
473 | See `set-window-redisplay-end-trigger' for more information. */) | |
474 | (window) | |
190eb263 RS |
475 | Lisp_Object window; |
476 | { | |
477 | return decode_window (window)->redisplay_end_trigger; | |
478 | } | |
479 | ||
480 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
481 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
482 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
483 | VALUE should be a buffer position (typically a marker) or nil. | |
484 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
485 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
486 | with two arguments: WINDOW, and the end trigger value. | |
487 | Afterwards the end-trigger value is reset to nil. */) | |
488 | (window, value) | |
190eb263 RS |
489 | register Lisp_Object window, value; |
490 | { | |
491 | register struct window *w; | |
492 | ||
493 | w = decode_window (window); | |
494 | w->redisplay_end_trigger = value; | |
495 | return value; | |
496 | } | |
497 | ||
7ab12479 | 498 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
499 | doc: /* Return a list of the edge coordinates of WINDOW. |
500 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
501 | RIGHT is one more than the rightmost column occupied by WINDOW, |
502 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
503 | The edges include the space used by the window's scroll bar, | |
504 | display margins, fringes, header line, and mode line, if it has them. | |
505 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 506 | (window) |
7ab12479 JB |
507 | Lisp_Object window; |
508 | { | |
e995d23a | 509 | register struct window *w = decode_any_window (window); |
7ab12479 | 510 | |
949cf20f KS |
511 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
512 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
513 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
514 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
515 | Qnil)))); | |
7ab12479 JB |
516 | } |
517 | ||
c99a9eb3 RS |
518 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
519 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
520 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
521 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
522 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
523 | The pixel edges include the space used by the window's scroll bar, | |
524 | display margins, fringes, header line, and mode line, if it has them. | |
525 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
526 | (window) | |
527 | Lisp_Object window; | |
528 | { | |
e995d23a | 529 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
530 | |
531 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
532 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
533 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
534 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
535 | Qnil)))); | |
536 | } | |
537 | ||
538 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
539 | doc: /* Return a list of the edge coordinates of WINDOW. | |
540 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
541 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
542 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
543 | The inside edges do not include the space used by the window's scroll bar, | |
544 | display margins, fringes, header line, and/or mode line. */) | |
545 | (window) | |
546 | Lisp_Object window; | |
547 | { | |
e995d23a | 548 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
549 | |
550 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
551 | + WINDOW_LEFT_MARGIN_COLS (w) | |
552 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
553 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
554 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 555 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
556 | - WINDOW_RIGHT_MARGIN_COLS (w) |
557 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
558 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
559 | - WINDOW_MODE_LINE_LINES (w))); | |
560 | } | |
561 | ||
562 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 563 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
564 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
565 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
566 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
567 | The inside edges do not include the space used by the window's scroll bar, | |
568 | display margins, fringes, header line, and/or mode line. */) | |
569 | (window) | |
570 | Lisp_Object window; | |
571 | { | |
e995d23a | 572 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
573 | |
574 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
575 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
576 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
577 | make_number (WINDOW_TOP_EDGE_Y (w) | |
578 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 579 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
580 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
581 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
582 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
583 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
584 | } | |
585 | ||
fbad6f9a | 586 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 587 | If it is not, return ON_NOTHING; |
d5783c40 JB |
588 | if it is in the window's text area, |
589 | set *x and *y to its location relative to the upper left corner | |
590 | of the window, and | |
341f3858 KS |
591 | return ON_TEXT; |
592 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 593 | if it is on the border between the window and its right sibling, |
341f3858 | 594 | return ON_VERTICAL_BORDER. |
6487f669 RS |
595 | if it is on a scroll bar, |
596 | return ON_SCROLL_BAR. | |
341f3858 | 597 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 598 | if it is in left or right fringe of the window, |
341f3858 KS |
599 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
600 | to window-relative coordinates; | |
49b996e7 | 601 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
602 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
603 | to window-relative coordinates. | |
5500c422 GM |
604 | |
605 | X and Y are frame relative pixel coordinates. */ | |
606 | ||
7442878f | 607 | static enum window_part |
d5783c40 JB |
608 | coordinates_in_window (w, x, y) |
609 | register struct window *w; | |
610 | register int *x, *y; | |
611 | { | |
b0228ace GM |
612 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
613 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 614 | enum window_part part; |
949cf20f KS |
615 | int ux = FRAME_COLUMN_WIDTH (f); |
616 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
617 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
618 | /* The width of the area where the vertical line can be dragged. |
619 | (Between mode lines for instance. */ | |
620 | int grabbable_width = ux; | |
949cf20f | 621 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 622 | |
466539bc EZ |
623 | /* In what's below, we subtract 1 when computing right_x because we |
624 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
625 | if (w->pseudo_window_p) |
626 | { | |
627 | left_x = 0; | |
949cf20f KS |
628 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
629 | top_y = WINDOW_TOP_EDGE_Y (w); | |
630 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
631 | } |
632 | else | |
633 | { | |
949cf20f KS |
634 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
635 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
636 | top_y = WINDOW_TOP_EDGE_Y (w); | |
637 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 638 | } |
37962e60 | 639 | |
949cf20f KS |
640 | /* Outside any interesting row? */ |
641 | if (*y < top_y || *y >= bottom_y) | |
642 | return ON_NOTHING; | |
643 | ||
1cb794ba GM |
644 | /* On the mode line or header line? If it's near the start of |
645 | the mode or header line of window that's has a horizontal | |
646 | sibling, say it's on the vertical line. That's to be able | |
647 | to resize windows horizontally in case we're using toolkit | |
648 | scroll bars. */ | |
b0228ace | 649 | |
1cb794ba | 650 | if (WINDOW_WANTS_MODELINE_P (w) |
0de01dfe | 651 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 652 | { |
949cf20f KS |
653 | part = ON_MODE_LINE; |
654 | ||
655 | header_vertical_border_check: | |
b0228ace GM |
656 | /* We're somewhere on the mode line. We consider the place |
657 | between mode lines of horizontally adjacent mode lines | |
658 | as the vertical border. If scroll bars on the left, | |
659 | return the right window. */ | |
949cf20f KS |
660 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
661 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 662 | { |
949cf20f | 663 | if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width) |
f8c62b70 | 664 | { |
3f489dc7 KS |
665 | /* Convert X and Y to window relative coordinates. |
666 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
667 | *x = max (0, *x - x0); |
668 | *y -= top_y; | |
669 | return ON_VERTICAL_BORDER; | |
670 | } | |
b0228ace | 671 | } |
79fd290e | 672 | else |
b0228ace | 673 | { |
949cf20f | 674 | if (abs (*x - x1) < grabbable_width) |
f8c62b70 | 675 | { |
3f489dc7 KS |
676 | /* Convert X and Y to window relative coordinates. |
677 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
678 | *x = min (x1, *x) - x0; |
679 | *y -= top_y; | |
680 | return ON_VERTICAL_BORDER; | |
681 | } | |
b0228ace | 682 | } |
949cf20f | 683 | |
cb639b8f KS |
684 | if (*x < x0 || *x >= x1) |
685 | return ON_NOTHING; | |
686 | ||
a5303820 KS |
687 | /* Convert X and Y to window relative coordinates. |
688 | Mode line starts at left edge of window. */ | |
689 | *x -= x0; | |
690 | *y -= top_y; | |
949cf20f | 691 | return part; |
b0228ace | 692 | } |
949cf20f KS |
693 | |
694 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 695 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 696 | { |
949cf20f KS |
697 | part = ON_HEADER_LINE; |
698 | goto header_vertical_border_check; | |
1cb794ba | 699 | } |
949cf20f | 700 | |
cb639b8f KS |
701 | if (*x < x0 || *x >= x1) |
702 | return ON_NOTHING; | |
703 | ||
949cf20f KS |
704 | /* Outside any interesting column? */ |
705 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
706 | { |
707 | *y -= top_y; | |
708 | return ON_SCROLL_BAR; | |
709 | } | |
949cf20f KS |
710 | |
711 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
712 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 713 | |
949cf20f KS |
714 | text_left = window_box_left (w, TEXT_AREA); |
715 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
716 | ||
717 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 718 | { |
447e9da0 | 719 | if (!w->pseudo_window_p |
949cf20f | 720 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 721 | && !WINDOW_RIGHTMOST_P (w) |
949cf20f | 722 | && (abs (*x - right_x) < grabbable_width)) |
f8c62b70 | 723 | { |
3f489dc7 KS |
724 | /* Convert X and Y to window relative coordinates. |
725 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
726 | *x = min (right_x, *x) - left_x; |
727 | *y -= top_y; | |
728 | return ON_VERTICAL_BORDER; | |
729 | } | |
fbad6f9a | 730 | } |
447e9da0 GM |
731 | else |
732 | { | |
733 | /* Need to say "*x > right_x" rather than >=, since on character | |
734 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
735 | if (!w->pseudo_window_p |
736 | && !WINDOW_RIGHTMOST_P (w) | |
737 | && *x > right_x - ux) | |
b0228ace GM |
738 | { |
739 | /* On the border on the right side of the window? Assume that | |
740 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
741 | *x = min (right_x, *x) - left_x; |
742 | *y -= top_y; | |
949cf20f | 743 | return ON_VERTICAL_BORDER; |
b0228ace | 744 | } |
447e9da0 | 745 | } |
b0228ace | 746 | |
949cf20f KS |
747 | if (*x < text_left) |
748 | { | |
749 | if (lmargin_width > 0 | |
750 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
751 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
752 | : (*x < left_x + lmargin_width))) | |
a5303820 | 753 | { |
0de01dfe | 754 | *x -= left_x; |
a5303820 KS |
755 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
756 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
757 | *y -= top_y; | |
758 | return ON_LEFT_MARGIN; | |
759 | } | |
949cf20f KS |
760 | |
761 | /* Convert X and Y to window-relative pixel coordinates. */ | |
762 | *x -= left_x; | |
763 | *y -= top_y; | |
764 | return ON_LEFT_FRINGE; | |
765 | } | |
766 | ||
767 | if (*x >= text_right) | |
768 | { | |
769 | if (rmargin_width > 0 | |
770 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
771 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
772 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 773 | { |
66d41723 KS |
774 | *x -= right_x - rmargin_width; |
775 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
776 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
777 | *y -= top_y; |
778 | return ON_RIGHT_MARGIN; | |
779 | } | |
949cf20f KS |
780 | |
781 | /* Convert X and Y to window-relative pixel coordinates. */ | |
782 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
783 | *y -= top_y; | |
784 | return ON_RIGHT_FRINGE; | |
785 | } | |
786 | ||
787 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 788 | *x -= text_left; |
949cf20f KS |
789 | *y -= top_y; |
790 | return ON_TEXT; | |
d5783c40 JB |
791 | } |
792 | ||
b0228ace | 793 | |
d5783c40 | 794 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
795 | Scoordinates_in_window_p, 2, 2, 0, |
796 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
797 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
798 | measured in characters from the upper-left corner of the frame. | |
799 | \(0 . 0) denotes the character in the upper left corner of the | |
800 | frame. | |
801 | If COORDINATES are in the text portion of WINDOW, | |
802 | the coordinates relative to the window are returned. | |
803 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
804 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
805 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
806 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 807 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
808 | `vertical-line' is returned. |
809 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
810 | or `right-margin' is returned. */) | |
fdb82f93 | 811 | (coordinates, window) |
d5783c40 JB |
812 | register Lisp_Object coordinates, window; |
813 | { | |
5500c422 GM |
814 | struct window *w; |
815 | struct frame *f; | |
d5783c40 | 816 | int x, y; |
5500c422 | 817 | Lisp_Object lx, ly; |
d5783c40 | 818 | |
e995d23a | 819 | CHECK_WINDOW (window); |
5500c422 GM |
820 | w = XWINDOW (window); |
821 | f = XFRAME (w->frame); | |
b7826503 | 822 | CHECK_CONS (coordinates); |
5500c422 GM |
823 | lx = Fcar (coordinates); |
824 | ly = Fcdr (coordinates); | |
b7826503 PJ |
825 | CHECK_NUMBER_OR_FLOAT (lx); |
826 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
827 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
828 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
829 | |
830 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 831 | { |
7442878f | 832 | case ON_NOTHING: |
d5783c40 JB |
833 | return Qnil; |
834 | ||
7442878f GM |
835 | case ON_TEXT: |
836 | /* X and Y are now window relative pixel coordinates. Convert | |
837 | them to canonical char units before returning them. */ | |
949cf20f KS |
838 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
839 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 840 | |
7442878f | 841 | case ON_MODE_LINE: |
d5783c40 | 842 | return Qmode_line; |
37962e60 | 843 | |
7442878f | 844 | case ON_VERTICAL_BORDER: |
e5d77022 | 845 | return Qvertical_line; |
d5783c40 | 846 | |
7442878f | 847 | case ON_HEADER_LINE: |
045dee35 | 848 | return Qheader_line; |
5500c422 | 849 | |
7442878f GM |
850 | case ON_LEFT_FRINGE: |
851 | return Qleft_fringe; | |
177c0ea7 | 852 | |
7442878f GM |
853 | case ON_RIGHT_FRINGE: |
854 | return Qright_fringe; | |
fbad6f9a | 855 | |
49b996e7 GM |
856 | case ON_LEFT_MARGIN: |
857 | return Qleft_margin; | |
177c0ea7 | 858 | |
49b996e7 GM |
859 | case ON_RIGHT_MARGIN: |
860 | return Qright_margin; | |
861 | ||
6487f669 RS |
862 | case ON_SCROLL_BAR: |
863 | /* Historically we are supposed to return nil in this case. */ | |
864 | return Qnil; | |
865 | ||
d5783c40 JB |
866 | default: |
867 | abort (); | |
868 | } | |
869 | } | |
870 | ||
67492200 GM |
871 | |
872 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
873 | Check if window W contains coordinates specified by USER_DATA which |
874 | is actually a pointer to a struct check_window_data CW. | |
875 | ||
876 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
877 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 878 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
879 | zero from this function to stop iterating over windows. */ |
880 | ||
881 | struct check_window_data | |
882 | { | |
883 | Lisp_Object *window; | |
341f3858 KS |
884 | int *x, *y; |
885 | enum window_part *part; | |
f95464e4 | 886 | }; |
67492200 GM |
887 | |
888 | static int | |
f95464e4 | 889 | check_window_containing (w, user_data) |
67492200 | 890 | struct window *w; |
f95464e4 | 891 | void *user_data; |
67492200 | 892 | { |
f95464e4 | 893 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
894 | enum window_part found; |
895 | int continue_p = 1; | |
67492200 | 896 | |
f95464e4 | 897 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 898 | if (found != ON_NOTHING) |
67492200 | 899 | { |
341f3858 | 900 | *cw->part = found; |
f95464e4 | 901 | XSETWINDOW (*cw->window, w); |
7442878f | 902 | continue_p = 0; |
67492200 | 903 | } |
177c0ea7 | 904 | |
7442878f | 905 | return continue_p; |
67492200 GM |
906 | } |
907 | ||
908 | ||
5500c422 | 909 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
910 | return it as a Lisp_Object. |
911 | ||
912 | If X, Y is on one of the window's special `window_part' elements, | |
913 | set *PART to the id of that element, and return X and Y converted | |
914 | to window relative coordinates in WX and WY. | |
915 | ||
341f3858 | 916 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
917 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
918 | ||
919 | This function was previously implemented with a loop cycling over | |
920 | windows with Fnext_window, and starting with the frame's selected | |
921 | window. It turned out that this doesn't work with an | |
922 | implementation of next_window using Vwindow_list, because | |
923 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
924 | tree of F when this function is called asynchronously from | |
925 | note_mouse_highlight. The original loop didn't terminate in this | |
926 | case. */ | |
5500c422 | 927 | |
7ab12479 | 928 | Lisp_Object |
949cf20f | 929 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 930 | struct frame *f; |
7ab12479 | 931 | int x, y; |
341f3858 | 932 | enum window_part *part; |
949cf20f | 933 | int *wx, *wy; |
9ea173e8 | 934 | int tool_bar_p; |
7ab12479 | 935 | { |
67492200 | 936 | Lisp_Object window; |
f95464e4 | 937 | struct check_window_data cw; |
341f3858 KS |
938 | enum window_part dummy; |
939 | ||
940 | if (part == 0) | |
941 | part = &dummy; | |
5500c422 | 942 | |
67492200 | 943 | window = Qnil; |
f95464e4 GM |
944 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
945 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 946 | |
67492200 GM |
947 | /* If not found above, see if it's in the tool bar window, if a tool |
948 | bar exists. */ | |
949 | if (NILP (window) | |
950 | && tool_bar_p | |
951 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 952 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
953 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
954 | != ON_NOTHING)) | |
5500c422 | 955 | { |
341f3858 | 956 | *part = ON_TEXT; |
67492200 | 957 | window = f->tool_bar_window; |
5500c422 | 958 | } |
37962e60 | 959 | |
949cf20f KS |
960 | if (wx) *wx = x; |
961 | if (wy) *wy = y; | |
962 | ||
67492200 | 963 | return window; |
7ab12479 JB |
964 | } |
965 | ||
ab17c3f2 | 966 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
967 | doc: /* Return window containing coordinates X and Y on FRAME. |
968 | If omitted, FRAME defaults to the currently selected frame. | |
969 | The top left corner of the frame is considered to be row 0, | |
970 | column 0. */) | |
971 | (x, y, frame) | |
972 | Lisp_Object x, y, frame; | |
7ab12479 | 973 | { |
5500c422 | 974 | struct frame *f; |
7ab12479 | 975 | |
44fa5b1e | 976 | if (NILP (frame)) |
1ae1a37d | 977 | frame = selected_frame; |
b7826503 | 978 | CHECK_LIVE_FRAME (frame); |
5500c422 | 979 | f = XFRAME (frame); |
7ab12479 | 980 | |
5500c422 | 981 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
982 | CHECK_NUMBER_OR_FLOAT (x); |
983 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 984 | |
177c0ea7 | 985 | return window_from_coordinates (f, |
2c77cf3b RS |
986 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
987 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
988 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
989 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 990 | 0, 0, 0, 0); |
7ab12479 JB |
991 | } |
992 | ||
993 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
994 | doc: /* Return current value of point in WINDOW. |
995 | For a nonselected window, this is the value point would have | |
996 | if that window were selected. | |
997 | ||
998 | Note that, when WINDOW is the selected window and its buffer | |
999 | is also currently selected, the value returned is the same as (point). | |
1000 | It would be more strictly correct to return the `top-level' value | |
1001 | of point, outside of any save-excursion forms. | |
1002 | But that is hard to define. */) | |
1003 | (window) | |
7ab12479 JB |
1004 | Lisp_Object window; |
1005 | { | |
1006 | register struct window *w = decode_window (window); | |
1007 | ||
1008 | if (w == XWINDOW (selected_window) | |
1009 | && current_buffer == XBUFFER (w->buffer)) | |
1010 | return Fpoint (); | |
1011 | return Fmarker_position (w->pointm); | |
1012 | } | |
1013 | ||
1014 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
1015 | doc: /* Return position at which display currently starts in WINDOW. |
1016 | This is updated by redisplay or by calling `set-window-start'. */) | |
1017 | (window) | |
7ab12479 JB |
1018 | Lisp_Object window; |
1019 | { | |
1020 | return Fmarker_position (decode_window (window)->start); | |
1021 | } | |
1022 | ||
8646118f RS |
1023 | /* This is text temporarily removed from the doc string below. |
1024 | ||
fdb82f93 PJ |
1025 | This function returns nil if the position is not currently known. |
1026 | That happens when redisplay is preempted and doesn't finish. | |
1027 | If in that case you want to compute where the end of the window would | |
1028 | have been if redisplay had finished, do this: | |
1029 | (save-excursion | |
1030 | (goto-char (window-start window)) | |
1031 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1032 | (point))") */ |
1033 | ||
478292ed | 1034 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
1035 | doc: /* Return position at which display currently ends in WINDOW. |
1036 | This is updated by redisplay, when it runs to completion. | |
1037 | Simply changing the buffer text or setting `window-start' | |
1038 | does not update this value. | |
a0a37a6f LT |
1039 | Return nil if there is no recorded value. \(This can happen if the |
1040 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1041 | If UPDATE is non-nil, compute the up-to-date position |
1042 | if it isn't already recorded. */) | |
1043 | (window, update) | |
478292ed | 1044 | Lisp_Object window, update; |
7ab12479 JB |
1045 | { |
1046 | Lisp_Object value; | |
1047 | struct window *w = decode_window (window); | |
5a41ab94 RS |
1048 | Lisp_Object buf; |
1049 | ||
1050 | buf = w->buffer; | |
b7826503 | 1051 | CHECK_BUFFER (buf); |
5a41ab94 | 1052 | |
8646118f | 1053 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1054 | /* If we don't know the end position, return nil. |
1055 | The user can compute it with vertical-motion if he wants to. | |
1056 | It would be nicer to do it automatically, | |
1057 | but that's so slow that it would probably bother people. */ | |
1058 | if (NILP (w->window_end_valid)) | |
1059 | return Qnil; | |
8646118f | 1060 | #endif |
7250968e | 1061 | |
478292ed RS |
1062 | if (! NILP (update) |
1063 | && ! (! NILP (w->window_end_valid) | |
41791a20 RF |
1064 | && XFASTINT (w->last_modified) >= MODIFF) |
1065 | && !noninteractive) | |
478292ed | 1066 | { |
cbc099e5 GM |
1067 | struct text_pos startp; |
1068 | struct it it; | |
99593a9d | 1069 | struct buffer *old_buffer = NULL, *b = XBUFFER (buf); |
2d6d9df0 GM |
1070 | |
1071 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1072 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1073 | `-l' containing a call to `rmail' with subsequent other |
1074 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1075 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1076 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1077 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1078 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1079 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1080 | else |
cbc099e5 GM |
1081 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1082 | ||
1083 | /* Cannot use Fvertical_motion because that function doesn't | |
1084 | cope with variable-height lines. */ | |
99593a9d GM |
1085 | if (b != current_buffer) |
1086 | { | |
1087 | old_buffer = current_buffer; | |
1088 | set_buffer_internal (b); | |
1089 | } | |
177c0ea7 | 1090 | |
cbc099e5 GM |
1091 | start_display (&it, w, startp); |
1092 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1093 | if (it.current_y < it.last_visible_y) |
1094 | move_it_past_eol (&it); | |
cbc099e5 | 1095 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1096 | |
99593a9d GM |
1097 | if (old_buffer) |
1098 | set_buffer_internal (old_buffer); | |
478292ed RS |
1099 | } |
1100 | else | |
cbc099e5 | 1101 | XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1102 | |
1103 | return value; | |
1104 | } | |
1105 | ||
1106 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1107 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1108 | Return POS. */) | |
fdb82f93 | 1109 | (window, pos) |
7ab12479 JB |
1110 | Lisp_Object window, pos; |
1111 | { | |
1112 | register struct window *w = decode_window (window); | |
1113 | ||
b7826503 | 1114 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1115 | if (w == XWINDOW (selected_window) |
1116 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1117 | Fgoto_char (pos); |
1118 | else | |
1119 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1120 | |
0685cb3c GM |
1121 | /* We have to make sure that redisplay updates the window to show |
1122 | the new value of point. */ | |
1123 | if (!EQ (window, selected_window)) | |
799417bd | 1124 | ++windows_or_buffers_changed; |
177c0ea7 | 1125 | |
7ab12479 JB |
1126 | return pos; |
1127 | } | |
1128 | ||
1129 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1130 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1131 | Return POS. |
fdb82f93 PJ |
1132 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1133 | from overriding motion of point in order to display at this exact start. */) | |
1134 | (window, pos, noforce) | |
7ab12479 JB |
1135 | Lisp_Object window, pos, noforce; |
1136 | { | |
1137 | register struct window *w = decode_window (window); | |
1138 | ||
b7826503 | 1139 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1140 | set_marker_restricted (w->start, pos, w->buffer); |
1141 | /* this is not right, but much easier than doing what is right. */ | |
1142 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1143 | if (NILP (noforce)) |
7ab12479 JB |
1144 | w->force_start = Qt; |
1145 | w->update_mode_line = Qt; | |
d834a2e9 | 1146 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1147 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1148 | if (!EQ (window, selected_window)) |
1149 | windows_or_buffers_changed++; | |
ce7fae7d | 1150 | |
7ab12479 JB |
1151 | return pos; |
1152 | } | |
1153 | ||
1154 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1155 | 1, 1, 0, | |
fdb82f93 PJ |
1156 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1157 | See also `set-window-dedicated-p'. */) | |
1158 | (window) | |
7ab12479 JB |
1159 | Lisp_Object window; |
1160 | { | |
1161 | return decode_window (window)->dedicated; | |
1162 | } | |
1163 | ||
d207b766 RS |
1164 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1165 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1166 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1167 | If it is dedicated, Emacs will not automatically change | |
1168 | which buffer appears in it. | |
1169 | The second argument is the new value for the dedication flag; | |
1170 | non-nil means yes. */) | |
1171 | (window, arg) | |
1172 | Lisp_Object window, arg; | |
7ab12479 JB |
1173 | { |
1174 | register struct window *w = decode_window (window); | |
1175 | ||
2d0834cc | 1176 | w->dedicated = arg; |
7ab12479 JB |
1177 | |
1178 | return w->dedicated; | |
1179 | } | |
1180 | ||
1181 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1182 | 0, 1, 0, | |
fdb82f93 PJ |
1183 | doc: /* Return the display-table that WINDOW is using. */) |
1184 | (window) | |
7ab12479 JB |
1185 | Lisp_Object window; |
1186 | { | |
1187 | return decode_window (window)->display_table; | |
1188 | } | |
1189 | ||
5500c422 GM |
1190 | /* Get the display table for use on window W. This is either W's |
1191 | display table or W's buffer's display table. Ignore the specified | |
1192 | tables if they are not valid; if no valid table is specified, | |
1193 | return 0. */ | |
7ab12479 | 1194 | |
319315f1 | 1195 | struct Lisp_Char_Table * |
7ab12479 JB |
1196 | window_display_table (w) |
1197 | struct window *w; | |
1198 | { | |
c756cdbe GM |
1199 | struct Lisp_Char_Table *dp = NULL; |
1200 | ||
1201 | if (DISP_TABLE_P (w->display_table)) | |
1202 | dp = XCHAR_TABLE (w->display_table); | |
1203 | else if (BUFFERP (w->buffer)) | |
1204 | { | |
1205 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1206 | |
c756cdbe GM |
1207 | if (DISP_TABLE_P (b->display_table)) |
1208 | dp = XCHAR_TABLE (b->display_table); | |
1209 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1210 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1211 | } | |
171d003c | 1212 | |
c756cdbe | 1213 | return dp; |
7ab12479 JB |
1214 | } |
1215 | ||
3a2712f9 | 1216 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1217 | doc: /* Set WINDOW's display-table to TABLE. */) |
1218 | (window, table) | |
7ab12479 JB |
1219 | register Lisp_Object window, table; |
1220 | { | |
1221 | register struct window *w; | |
7ab12479 JB |
1222 | |
1223 | w = decode_window (window); | |
1224 | w->display_table = table; | |
1225 | return table; | |
1226 | } | |
1227 | \f | |
1228 | /* Record info on buffer window w is displaying | |
1229 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1230 | static void |
7ab12479 JB |
1231 | unshow_buffer (w) |
1232 | register struct window *w; | |
1233 | { | |
12cae7c0 | 1234 | Lisp_Object buf; |
b73ea88e | 1235 | struct buffer *b; |
7ab12479 | 1236 | |
12cae7c0 | 1237 | buf = w->buffer; |
b73ea88e RS |
1238 | b = XBUFFER (buf); |
1239 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1240 | abort (); |
1241 | ||
573f41ab | 1242 | #if 0 |
7ab12479 JB |
1243 | if (w == XWINDOW (selected_window) |
1244 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1245 | /* Do this except when the selected window's buffer | |
1246 | is being removed from some other window. */ | |
573f41ab RS |
1247 | #endif |
1248 | /* last_window_start records the start position that this buffer | |
1249 | had in the last window to be disconnected from it. | |
1250 | Now that this statement is unconditional, | |
1251 | it is possible for the buffer to be displayed in the | |
1252 | selected window, while last_window_start reflects another | |
1253 | window which was recently showing the same buffer. | |
1254 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1255 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1256 | |
1257 | /* Point in the selected window's buffer | |
1258 | is actually stored in that buffer, and the window's pointm isn't used. | |
1259 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1260 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1261 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1262 | && !(WINDOWP (b->last_selected_window) |
1263 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1264 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1265 | temp_set_point_both (b, |
1266 | clip_to_bounds (BUF_BEGV (b), | |
1267 | XMARKER (w->pointm)->charpos, | |
1268 | BUF_ZV (b)), | |
1269 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1270 | marker_byte_position (w->pointm), | |
1271 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1272 | |
8801a864 KR |
1273 | if (WINDOWP (b->last_selected_window) |
1274 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1275 | b->last_selected_window = Qnil; |
7ab12479 JB |
1276 | } |
1277 | ||
1278 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1279 | static void |
7ab12479 JB |
1280 | replace_window (old, replacement) |
1281 | Lisp_Object old, replacement; | |
1282 | { | |
1283 | register Lisp_Object tem; | |
1284 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1285 | ||
44fa5b1e JB |
1286 | /* If OLD is its frame's root_window, then replacement is the new |
1287 | root_window for that frame. */ | |
7ab12479 | 1288 | |
7f4161e0 | 1289 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1290 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1291 | |
949cf20f KS |
1292 | p->left_col = o->left_col; |
1293 | p->top_line = o->top_line; | |
1294 | p->total_cols = o->total_cols; | |
1295 | p->total_lines = o->total_lines; | |
5500c422 GM |
1296 | p->desired_matrix = p->current_matrix = 0; |
1297 | p->vscroll = 0; | |
1298 | bzero (&p->cursor, sizeof (p->cursor)); | |
1299 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1300 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1301 | p->phys_cursor_type = -1; | |
4b26579e | 1302 | p->phys_cursor_width = -1; |
5500c422 GM |
1303 | p->must_be_updated_p = 0; |
1304 | p->pseudo_window_p = 0; | |
1305 | XSETFASTINT (p->window_end_vpos, 0); | |
1306 | XSETFASTINT (p->window_end_pos, 0); | |
1307 | p->window_end_valid = Qnil; | |
7bbb5782 | 1308 | p->frozen_window_start_p = 0; |
949cf20f | 1309 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1310 | |
1311 | p->next = tem = o->next; | |
265a9e55 | 1312 | if (!NILP (tem)) |
7ab12479 JB |
1313 | XWINDOW (tem)->prev = replacement; |
1314 | ||
1315 | p->prev = tem = o->prev; | |
265a9e55 | 1316 | if (!NILP (tem)) |
7ab12479 JB |
1317 | XWINDOW (tem)->next = replacement; |
1318 | ||
1319 | p->parent = tem = o->parent; | |
265a9e55 | 1320 | if (!NILP (tem)) |
7ab12479 JB |
1321 | { |
1322 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1323 | XWINDOW (tem)->vchild = replacement; | |
1324 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1325 | XWINDOW (tem)->hchild = replacement; | |
1326 | } | |
1327 | ||
1328 | /*** Here, if replacement is a vertical combination | |
1329 | and so is its new parent, we should make replacement's | |
1330 | children be children of that parent instead. ***/ | |
1331 | } | |
1332 | ||
1333 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1334 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1335 | (window) | |
7ab12479 | 1336 | register Lisp_Object window; |
543f5fb1 RS |
1337 | { |
1338 | delete_window (window); | |
1339 | ||
1340 | if (! NILP (Vwindow_configuration_change_hook) | |
1341 | && ! NILP (Vrun_hooks)) | |
1342 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1343 | ||
1344 | return Qnil; | |
1345 | } | |
1346 | ||
5e14b1fc | 1347 | void |
543f5fb1 RS |
1348 | delete_window (window) |
1349 | register Lisp_Object window; | |
7ab12479 JB |
1350 | { |
1351 | register Lisp_Object tem, parent, sib; | |
1352 | register struct window *p; | |
1353 | register struct window *par; | |
951f9df5 | 1354 | struct frame *f; |
7ab12479 | 1355 | |
605be8af JB |
1356 | /* Because this function is called by other C code on non-leaf |
1357 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1358 | so we can't decode_window here. */ | |
265a9e55 | 1359 | if (NILP (window)) |
7ab12479 JB |
1360 | window = selected_window; |
1361 | else | |
b7826503 | 1362 | CHECK_WINDOW (window); |
7ab12479 | 1363 | p = XWINDOW (window); |
605be8af | 1364 | |
0d384044 | 1365 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1366 | if (NILP (p->buffer) |
1367 | && NILP (p->hchild) | |
1368 | && NILP (p->vchild)) | |
296b535c | 1369 | return; |
605be8af | 1370 | |
7ab12479 | 1371 | parent = p->parent; |
265a9e55 | 1372 | if (NILP (parent)) |
7ab12479 JB |
1373 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1374 | par = XWINDOW (parent); | |
1375 | ||
1376 | windows_or_buffers_changed++; | |
67492200 | 1377 | Vwindow_list = Qnil; |
951f9df5 GM |
1378 | f = XFRAME (WINDOW_FRAME (p)); |
1379 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1380 | |
605be8af JB |
1381 | /* Are we trying to delete any frame's selected window? */ |
1382 | { | |
192c3131 | 1383 | Lisp_Object swindow, pwindow; |
605be8af | 1384 | |
0def0403 RS |
1385 | /* See if the frame's selected window is either WINDOW |
1386 | or any subwindow of it, by finding all that window's parents | |
1387 | and comparing each one with WINDOW. */ | |
192c3131 | 1388 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1389 | |
192c3131 | 1390 | while (1) |
0def0403 | 1391 | { |
192c3131 RS |
1392 | pwindow = swindow; |
1393 | while (!NILP (pwindow)) | |
1394 | { | |
1395 | if (EQ (window, pwindow)) | |
1396 | break; | |
1397 | pwindow = XWINDOW (pwindow)->parent; | |
1398 | } | |
1399 | ||
1400 | /* If the window being deleted is not a parent of SWINDOW, | |
1401 | then SWINDOW is ok as the new selected window. */ | |
1402 | if (!EQ (window, pwindow)) | |
0def0403 | 1403 | break; |
192c3131 RS |
1404 | /* Otherwise, try another window for SWINDOW. */ |
1405 | swindow = Fnext_window (swindow, Qlambda, Qnil);; | |
1406 | ||
1407 | /* If we get back to the frame's selected window, | |
1408 | it means there was no acceptable alternative, | |
1409 | so we cannot delete. */ | |
1410 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1411 | error ("Cannot delete window"); | |
0def0403 RS |
1412 | } |
1413 | ||
192c3131 RS |
1414 | /* If we need to change SWINDOW, do it. */ |
1415 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1416 | { |
605be8af JB |
1417 | /* If we're about to delete the selected window on the |
1418 | selected frame, then we should use Fselect_window to select | |
1419 | the new window. On the other hand, if we're about to | |
1420 | delete the selected window on any other frame, we shouldn't do | |
1421 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1422 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1423 | Fselect_window (swindow, Qnil); |
605be8af | 1424 | else |
192c3131 | 1425 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1426 | } |
1427 | } | |
7ab12479 | 1428 | |
0d384044 RS |
1429 | /* Now we know we can delete this one. */ |
1430 | window_deletion_count++; | |
1431 | ||
7ab12479 JB |
1432 | tem = p->buffer; |
1433 | /* tem is null for dummy parent windows | |
1434 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1435 | if (!NILP (tem)) |
7ab12479 JB |
1436 | { |
1437 | unshow_buffer (p); | |
2d0834cc SM |
1438 | unchain_marker (XMARKER (p->pointm)); |
1439 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1440 | } |
1441 | ||
05e71564 GM |
1442 | /* Free window glyph matrices. It is sure that they are allocated |
1443 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1444 | events and other events that access glyph matrices are not | |
1445 | processed while we are changing them. */ | |
1446 | BLOCK_INPUT; | |
951f9df5 | 1447 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1448 | |
7ab12479 | 1449 | tem = p->next; |
265a9e55 | 1450 | if (!NILP (tem)) |
7ab12479 JB |
1451 | XWINDOW (tem)->prev = p->prev; |
1452 | ||
1453 | tem = p->prev; | |
265a9e55 | 1454 | if (!NILP (tem)) |
7ab12479 JB |
1455 | XWINDOW (tem)->next = p->next; |
1456 | ||
1457 | if (EQ (window, par->hchild)) | |
1458 | par->hchild = p->next; | |
1459 | if (EQ (window, par->vchild)) | |
1460 | par->vchild = p->next; | |
1461 | ||
1462 | /* Find one of our siblings to give our space to. */ | |
1463 | sib = p->prev; | |
265a9e55 | 1464 | if (NILP (sib)) |
7ab12479 JB |
1465 | { |
1466 | /* If p gives its space to its next sibling, that sibling needs | |
1467 | to have its top/left side pulled back to where p's is. | |
1468 | set_window_{height,width} will re-position the sibling's | |
1469 | children. */ | |
1470 | sib = p->next; | |
949cf20f KS |
1471 | XWINDOW (sib)->top_line = p->top_line; |
1472 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1473 | } |
1474 | ||
1475 | /* Stretch that sibling. */ | |
265a9e55 | 1476 | if (!NILP (par->vchild)) |
7ab12479 | 1477 | set_window_height (sib, |
949cf20f | 1478 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1479 | 1); |
265a9e55 | 1480 | if (!NILP (par->hchild)) |
7ab12479 | 1481 | set_window_width (sib, |
949cf20f | 1482 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1483 | 1); |
1484 | ||
1485 | /* If parent now has only one child, | |
1486 | put the child into the parent's place. */ | |
7ab12479 | 1487 | tem = par->hchild; |
265a9e55 | 1488 | if (NILP (tem)) |
7ab12479 | 1489 | tem = par->vchild; |
5494d7bc | 1490 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1491 | replace_window (parent, tem); |
5494d7bc JD |
1492 | par = XWINDOW (tem); |
1493 | } | |
605be8af JB |
1494 | |
1495 | /* Since we may be deleting combination windows, we must make sure that | |
1496 | not only p but all its children have been marked as deleted. */ | |
1497 | if (! NILP (p->hchild)) | |
1498 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1499 | else if (! NILP (p->vchild)) | |
1500 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1501 | ||
1502 | /* Mark this window as deleted. */ | |
1503 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1504 | |
5494d7bc JD |
1505 | if (! NILP (par->parent)) |
1506 | par = XWINDOW (par->parent); | |
1507 | ||
1508 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1509 | one of them. */ | |
ae12ecd7 | 1510 | |
5494d7bc JD |
1511 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1512 | { | |
1513 | p = XWINDOW (par->vchild); | |
1514 | par->vchild = p->vchild; | |
1515 | tem = p->vchild; | |
1516 | } | |
1517 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1518 | { | |
1519 | p = XWINDOW (par->hchild); | |
1520 | par->hchild = p->hchild; | |
1521 | tem = p->hchild; | |
1522 | } | |
1523 | else | |
1524 | p = 0; | |
1525 | ||
1526 | if (p) | |
1527 | { | |
1528 | while (! NILP (tem)) { | |
1529 | XWINDOW (tem)->parent = p->parent; | |
1530 | if (NILP (XWINDOW (tem)->next)) | |
1531 | break; | |
1532 | tem = XWINDOW (tem)->next; | |
1533 | } | |
1534 | if (! NILP (tem)) { | |
1535 | /* The next of the v/hchild we are removing is now the next of the | |
1536 | last child for the v/hchild: | |
1537 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1538 | | | |
1539 | -> next3 | |
1540 | After: v/hchild -> next1 -> next2 -> next3 | |
1541 | */ | |
1542 | XWINDOW (tem)->next = p->next; | |
1543 | if (! NILP (p->next)) | |
1544 | XWINDOW (p->next)->prev = tem; | |
1545 | } | |
1546 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1547 | } | |
1548 | ||
1549 | ||
5500c422 | 1550 | /* Adjust glyph matrices. */ |
951f9df5 | 1551 | adjust_glyphs (f); |
05e71564 | 1552 | UNBLOCK_INPUT; |
7ab12479 | 1553 | } |
67492200 GM |
1554 | |
1555 | ||
7ab12479 | 1556 | \f |
67492200 GM |
1557 | /*********************************************************************** |
1558 | Window List | |
1559 | ***********************************************************************/ | |
1560 | ||
f95464e4 GM |
1561 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1562 | pointer. This is a callback function for foreach_window, used in | |
1563 | function window_list. */ | |
67492200 GM |
1564 | |
1565 | static int | |
f95464e4 | 1566 | add_window_to_list (w, user_data) |
67492200 | 1567 | struct window *w; |
f95464e4 | 1568 | void *user_data; |
67492200 | 1569 | { |
f95464e4 | 1570 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1571 | Lisp_Object window; |
1572 | XSETWINDOW (window, w); | |
212116d6 | 1573 | *list = Fcons (window, *list); |
67492200 GM |
1574 | return 1; |
1575 | } | |
1576 | ||
1577 | ||
1578 | /* Return a list of all windows, for use by next_window. If | |
1579 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1580 | list, cache it in Vwindow_list, and return that. */ | |
1581 | ||
1582 | static Lisp_Object | |
1583 | window_list () | |
1584 | { | |
1585 | if (!CONSP (Vwindow_list)) | |
1586 | { | |
1587 | Lisp_Object tail; | |
212116d6 | 1588 | |
67492200 GM |
1589 | Vwindow_list = Qnil; |
1590 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1591 | { |
1592 | Lisp_Object args[2]; | |
1593 | ||
1594 | /* We are visiting windows in canonical order, and add | |
1595 | new windows at the front of args[1], which means we | |
1596 | have to reverse this list at the end. */ | |
1597 | args[1] = Qnil; | |
1598 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1599 | args[0] = Vwindow_list; | |
1600 | args[1] = Fnreverse (args[1]); | |
1601 | Vwindow_list = Fnconc (2, args); | |
1602 | } | |
67492200 | 1603 | } |
177c0ea7 | 1604 | |
67492200 GM |
1605 | return Vwindow_list; |
1606 | } | |
1607 | ||
1608 | ||
118ea242 GM |
1609 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1610 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1611 | |
118ea242 GM |
1612 | MINIBUF t means WINDOW may be minibuffer windows. |
1613 | `lambda' means WINDOW may not be a minibuffer window. | |
1614 | a window means a specific minibuffer window | |
67492200 | 1615 | |
118ea242 GM |
1616 | ALL_FRAMES t means search all frames, |
1617 | nil means search just current frame, | |
1618 | `visible' means search just visible frames, | |
1619 | 0 means search visible and iconified frames, | |
1620 | a window means search the frame that window belongs to, | |
1621 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1622 | |
1623 | static int | |
118ea242 GM |
1624 | candidate_window_p (window, owindow, minibuf, all_frames) |
1625 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1626 | { |
1627 | struct window *w = XWINDOW (window); | |
1628 | struct frame *f = XFRAME (w->frame); | |
1629 | int candidate_p = 1; | |
1630 | ||
1631 | if (!BUFFERP (w->buffer)) | |
1632 | candidate_p = 0; | |
1633 | else if (MINI_WINDOW_P (w) | |
1634 | && (EQ (minibuf, Qlambda) | |
1635 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1636 | { | |
1637 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1638 | If it is a window, consider only that one. */ | |
1639 | candidate_p = 0; | |
1640 | } | |
118ea242 GM |
1641 | else if (EQ (all_frames, Qt)) |
1642 | candidate_p = 1; | |
67492200 | 1643 | else if (NILP (all_frames)) |
118ea242 GM |
1644 | { |
1645 | xassert (WINDOWP (owindow)); | |
1646 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1647 | } | |
67492200 GM |
1648 | else if (EQ (all_frames, Qvisible)) |
1649 | { | |
1650 | FRAME_SAMPLE_VISIBILITY (f); | |
1651 | candidate_p = FRAME_VISIBLE_P (f); | |
1652 | } | |
1653 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1654 | { | |
1655 | FRAME_SAMPLE_VISIBILITY (f); | |
1656 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1657 | } | |
67492200 GM |
1658 | else if (WINDOWP (all_frames)) |
1659 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1660 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1661 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1662 | else if (FRAMEP (all_frames)) |
1663 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1664 | |
1665 | return candidate_p; | |
1666 | } | |
1667 | ||
1668 | ||
1669 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1670 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1671 | ALL_FRAMES. */ | |
1672 | ||
1673 | static void | |
1674 | decode_next_window_args (window, minibuf, all_frames) | |
1675 | Lisp_Object *window, *minibuf, *all_frames; | |
1676 | { | |
1677 | if (NILP (*window)) | |
1678 | *window = selected_window; | |
1679 | else | |
b7826503 | 1680 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1681 | |
67492200 GM |
1682 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1683 | does. */ | |
1684 | if (NILP (*minibuf)) | |
1685 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1686 | else if (!EQ (*minibuf, Qt)) | |
1687 | *minibuf = Qlambda; | |
177c0ea7 | 1688 | |
67492200 GM |
1689 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1690 | => count none of them, or a specific minibuffer window (the | |
1691 | active one) to count. */ | |
1692 | ||
1693 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1694 | if (NILP (*all_frames)) | |
1695 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1696 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1697 | : Qnil); | |
1698 | else if (EQ (*all_frames, Qvisible)) | |
1699 | ; | |
0f8fe9a2 | 1700 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1701 | ; |
1702 | else if (FRAMEP (*all_frames)) | |
1703 | ; | |
1704 | else if (!EQ (*all_frames, Qt)) | |
1705 | *all_frames = Qnil; | |
177c0ea7 | 1706 | |
67492200 GM |
1707 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1708 | search just current frame, `visible' meaning search just visible | |
1709 | frames, 0 meaning search visible and iconified frames, or a | |
1710 | window, meaning search the frame that window belongs to, or a | |
1711 | frame, meaning consider windows on that frame, only. */ | |
1712 | } | |
1713 | ||
1714 | ||
1715 | /* Return the next or previous window of WINDOW in canonical ordering | |
1716 | of windows. NEXT_P non-zero means return the next window. See the | |
1717 | documentation string of next-window for the meaning of MINIBUF and | |
1718 | ALL_FRAMES. */ | |
1719 | ||
1720 | static Lisp_Object | |
1721 | next_window (window, minibuf, all_frames, next_p) | |
1722 | Lisp_Object window, minibuf, all_frames; | |
1723 | int next_p; | |
1724 | { | |
1725 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1726 | |
67492200 GM |
1727 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1728 | return the first window on the frame. */ | |
1729 | if (FRAMEP (all_frames) | |
1730 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1731 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1732 | |
212116d6 | 1733 | if (next_p) |
67492200 GM |
1734 | { |
1735 | Lisp_Object list; | |
177c0ea7 | 1736 | |
67492200 GM |
1737 | /* Find WINDOW in the list of all windows. */ |
1738 | list = Fmemq (window, window_list ()); | |
1739 | ||
1740 | /* Scan forward from WINDOW to the end of the window list. */ | |
1741 | if (CONSP (list)) | |
1742 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1743 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1744 | break; |
1745 | ||
1746 | /* Scan from the start of the window list up to WINDOW. */ | |
1747 | if (!CONSP (list)) | |
1748 | for (list = Vwindow_list; | |
1749 | CONSP (list) && !EQ (XCAR (list), window); | |
1750 | list = XCDR (list)) | |
118ea242 | 1751 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1752 | break; |
1753 | ||
1754 | if (CONSP (list)) | |
1755 | window = XCAR (list); | |
1756 | } | |
1757 | else | |
1758 | { | |
1759 | Lisp_Object candidate, list; | |
177c0ea7 | 1760 | |
67492200 GM |
1761 | /* Scan through the list of windows for candidates. If there are |
1762 | candidate windows in front of WINDOW, the last one of these | |
1763 | is the one we want. If there are candidates following WINDOW | |
1764 | in the list, again the last one of these is the one we want. */ | |
1765 | candidate = Qnil; | |
1766 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1767 | { | |
1768 | if (EQ (XCAR (list), window)) | |
1769 | { | |
1770 | if (WINDOWP (candidate)) | |
1771 | break; | |
1772 | } | |
118ea242 GM |
1773 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1774 | all_frames)) | |
67492200 GM |
1775 | candidate = XCAR (list); |
1776 | } | |
1777 | ||
1778 | if (WINDOWP (candidate)) | |
1779 | window = candidate; | |
1780 | } | |
1781 | ||
1782 | return window; | |
1783 | } | |
7ab12479 | 1784 | |
7ab12479 | 1785 | |
26f6279d | 1786 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1787 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1788 | If omitted, WINDOW defaults to the selected window. | |
1789 | ||
1790 | Optional second arg MINIBUF t means count the minibuffer window even | |
1791 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1792 | it is active. MINIBUF neither t nor nil means not to count the | |
1793 | minibuffer even if it is active. | |
1794 | ||
1795 | Several frames may share a single minibuffer; if the minibuffer | |
1796 | counts, all windows on all frames that share that minibuffer count | |
1797 | too. Therefore, `next-window' can be used to iterate through the | |
1798 | set of windows even when the minibuffer is on another frame. If the | |
1799 | minibuffer does not count, only windows from WINDOW's frame count. | |
1800 | ||
1801 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1802 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1803 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1804 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1805 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1806 | Anything else means restrict to WINDOW's frame. | |
1807 | ||
1808 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1809 | `next-window' to iterate through the entire cycle of acceptable | |
1810 | windows, eventually ending up back at the window you started with. | |
1811 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1812 | (window, minibuf, all_frames) | |
67492200 | 1813 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1814 | { |
67492200 | 1815 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1816 | } |
1817 | ||
67492200 | 1818 | |
26f6279d | 1819 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1820 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1821 | If omitted, WINDOW defaults to the selected window. | |
1822 | ||
1823 | Optional second arg MINIBUF t means count the minibuffer window even | |
1824 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1825 | it is active. MINIBUF neither t nor nil means not to count the | |
1826 | minibuffer even if it is active. | |
1827 | ||
1828 | Several frames may share a single minibuffer; if the minibuffer | |
1829 | counts, all windows on all frames that share that minibuffer count | |
1830 | too. Therefore, `previous-window' can be used to iterate through | |
1831 | the set of windows even when the minibuffer is on another frame. If | |
1832 | the minibuffer does not count, only windows from WINDOW's frame count | |
1833 | ||
1834 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1835 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1836 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1837 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1838 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1839 | Anything else means restrict to WINDOW's frame. | |
1840 | ||
1841 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1842 | `previous-window' to iterate through the entire cycle of acceptable | |
1843 | windows, eventually ending up back at the window you started with. | |
1844 | `next-window' traverses the same cycle, in the reverse order. */) | |
1845 | (window, minibuf, all_frames) | |
67492200 | 1846 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1847 | { |
67492200 | 1848 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1849 | } |
1850 | ||
67492200 | 1851 | |
62c07cc7 | 1852 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1853 | doc: /* Select the ARG'th different window on this frame. |
1854 | All windows on current frame are arranged in a cyclic order. | |
1855 | This command selects the window ARG steps away in that order. | |
c2755926 | 1856 | A negative ARG moves in the opposite order. The optional second |
8cd0d661 | 1857 | argument ALL-FRAMES has the same meaning as in `next-window', which see. */) |
fdb82f93 | 1858 | (arg, all_frames) |
67492200 | 1859 | Lisp_Object arg, all_frames; |
7ab12479 | 1860 | { |
67492200 GM |
1861 | Lisp_Object window; |
1862 | int i; | |
7ab12479 | 1863 | |
b7826503 | 1864 | CHECK_NUMBER (arg); |
67492200 | 1865 | window = selected_window; |
177c0ea7 | 1866 | |
67492200 GM |
1867 | for (i = XINT (arg); i > 0; --i) |
1868 | window = Fnext_window (window, Qnil, all_frames); | |
1869 | for (; i < 0; ++i) | |
1870 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1871 | |
14d87dc9 | 1872 | Fselect_window (window, Qnil); |
7ab12479 JB |
1873 | return Qnil; |
1874 | } | |
67492200 GM |
1875 | |
1876 | ||
1877 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1878 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
1879 | FRAME nil or omitted means use the selected frame. | |
1880 | WINDOW nil or omitted means use the selected window. | |
1881 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
1882 | MINIBUF nil or omitted means include the minibuffer window only | |
1883 | if it's active. | |
1884 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
1885 | (frame, minibuf, window) | |
cd2904bd GM |
1886 | Lisp_Object frame, minibuf, window; |
1887 | { | |
cd2904bd | 1888 | if (NILP (window)) |
acc6289a SM |
1889 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
1890 | CHECK_WINDOW (window); | |
cd2904bd GM |
1891 | if (NILP (frame)) |
1892 | frame = selected_frame; | |
1893 | ||
1894 | if (!EQ (frame, XWINDOW (window)->frame)) | |
1895 | error ("Window is on a different frame"); | |
1896 | ||
1897 | return window_list_1 (window, minibuf, frame); | |
1898 | } | |
1899 | ||
1900 | ||
1901 | /* Return a list of windows in canonical ordering. Arguments are like | |
1902 | for `next-window'. */ | |
1903 | ||
1904 | static Lisp_Object | |
1905 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 1906 | Lisp_Object window, minibuf, all_frames; |
67492200 | 1907 | { |
403de3b4 | 1908 | Lisp_Object tail, list, rest; |
67492200 GM |
1909 | |
1910 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1911 | list = Qnil; | |
177c0ea7 | 1912 | |
67492200 | 1913 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 1914 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 1915 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 1916 | |
403de3b4 RS |
1917 | /* Rotate the list to start with WINDOW. */ |
1918 | list = Fnreverse (list); | |
1919 | rest = Fmemq (window, list); | |
1920 | if (!NILP (rest) && !EQ (rest, list)) | |
1921 | { | |
1725a7c9 | 1922 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
1923 | ; |
1924 | XSETCDR (tail, Qnil); | |
1925 | list = nconc2 (rest, list); | |
1926 | } | |
1927 | return list; | |
67492200 GM |
1928 | } |
1929 | ||
1930 | ||
7ab12479 JB |
1931 | \f |
1932 | /* Look at all windows, performing an operation specified by TYPE | |
1933 | with argument OBJ. | |
75d8f668 | 1934 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1935 | Qnil, look at just the selected frame; |
89bca612 | 1936 | Qvisible, look at visible frames; |
75d8f668 | 1937 | a frame, just look at windows on that frame. |
85fe3b5e | 1938 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
1939 | |
1940 | enum window_loop | |
1941 | { | |
1942 | WINDOW_LOOP_UNUSED, | |
1943 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1944 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1945 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1946 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1947 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 1948 | UNSHOW_BUFFER, /* Arg is buffer */ |
e661376d | 1949 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 1950 | CHECK_ALL_WINDOWS |
7ab12479 JB |
1951 | }; |
1952 | ||
1953 | static Lisp_Object | |
44fa5b1e | 1954 | window_loop (type, obj, mini, frames) |
7ab12479 | 1955 | enum window_loop type; |
118ea242 | 1956 | Lisp_Object obj, frames; |
7ab12479 JB |
1957 | int mini; |
1958 | { | |
118ea242 GM |
1959 | Lisp_Object window, windows, best_window, frame_arg; |
1960 | struct frame *f; | |
ffdc852d | 1961 | struct gcpro gcpro1; |
177c0ea7 | 1962 | |
44fa5b1e JB |
1963 | /* If we're only looping through windows on a particular frame, |
1964 | frame points to that frame. If we're looping through windows | |
1965 | on all frames, frame is 0. */ | |
1966 | if (FRAMEP (frames)) | |
118ea242 | 1967 | f = XFRAME (frames); |
44fa5b1e | 1968 | else if (NILP (frames)) |
118ea242 | 1969 | f = SELECTED_FRAME (); |
7ab12479 | 1970 | else |
118ea242 | 1971 | f = NULL; |
177c0ea7 | 1972 | |
118ea242 | 1973 | if (f) |
89bca612 | 1974 | frame_arg = Qlambda; |
0f8fe9a2 | 1975 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 1976 | frame_arg = frames; |
89bca612 RS |
1977 | else if (EQ (frames, Qvisible)) |
1978 | frame_arg = frames; | |
118ea242 GM |
1979 | else |
1980 | frame_arg = Qt; | |
7ab12479 | 1981 | |
89bca612 RS |
1982 | /* frame_arg is Qlambda to stick to one frame, |
1983 | Qvisible to consider all visible frames, | |
1984 | or Qt otherwise. */ | |
1985 | ||
7ab12479 | 1986 | /* Pick a window to start with. */ |
017b2bad | 1987 | if (WINDOWP (obj)) |
118ea242 GM |
1988 | window = obj; |
1989 | else if (f) | |
1990 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 1991 | else |
118ea242 | 1992 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 1993 | |
cd2904bd | 1994 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 1995 | GCPRO1 (windows); |
7ab12479 | 1996 | best_window = Qnil; |
118ea242 | 1997 | |
e67a1dea | 1998 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 1999 | { |
118ea242 | 2000 | struct window *w; |
177c0ea7 | 2001 | |
118ea242 GM |
2002 | window = XCAR (windows); |
2003 | w = XWINDOW (window); | |
177c0ea7 | 2004 | |
118ea242 GM |
2005 | /* Note that we do not pay attention here to whether the frame |
2006 | is visible, since Fwindow_list skips non-visible frames if | |
2007 | that is desired, under the control of frame_arg. */ | |
2008 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2009 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2010 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2011 | || (mini && minibuf_level > 0)) |
2012 | switch (type) | |
2013 | { | |
2014 | case GET_BUFFER_WINDOW: | |
118ea242 | 2015 | if (EQ (w->buffer, obj) |
5c204627 RS |
2016 | /* Don't find any minibuffer window |
2017 | except the one that is currently in use. */ | |
118ea242 GM |
2018 | && (MINI_WINDOW_P (w) |
2019 | ? EQ (window, minibuf_window) | |
2020 | : 1)) | |
2021 | { | |
5ddc1b75 GM |
2022 | if (NILP (best_window)) |
2023 | best_window = window; | |
2024 | else if (EQ (window, selected_window)) | |
2025 | /* For compatibility with 20.x, prefer to return | |
2026 | selected-window. */ | |
2027 | best_window = window; | |
118ea242 | 2028 | } |
7ab12479 JB |
2029 | break; |
2030 | ||
2031 | case GET_LRU_WINDOW: | |
20b69789 SM |
2032 | /* `obj' is an integer encoding a bitvector. |
2033 | `obj & 1' means consider only full-width windows. | |
2034 | `obj & 2' means consider also dedicated windows. */ | |
2035 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2036 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2037 | /* Minibuffer windows are always ignored. */ |
2038 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2039 | break; |
265a9e55 | 2040 | if (NILP (best_window) |
7ab12479 | 2041 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2042 | > XFASTINT (w->use_time))) |
2043 | best_window = window; | |
7ab12479 JB |
2044 | break; |
2045 | ||
2046 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2047 | if (!EQ (window, obj)) |
2048 | Fdelete_window (window); | |
7ab12479 JB |
2049 | break; |
2050 | ||
2051 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2052 | if (EQ (w->buffer, obj)) |
7ab12479 | 2053 | { |
118ea242 | 2054 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2055 | |
2056 | /* If this window is dedicated, and in a frame of its own, | |
2057 | kill the frame. */ | |
118ea242 GM |
2058 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2059 | && !NILP (w->dedicated) | |
3548e138 | 2060 | && other_visible_frames (f)) |
7ab12479 | 2061 | { |
3548e138 RS |
2062 | /* Skip the other windows on this frame. |
2063 | There might be one, the minibuffer! */ | |
118ea242 GM |
2064 | while (CONSP (XCDR (windows)) |
2065 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2066 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2067 | windows = XCDR (windows); | |
177c0ea7 | 2068 | |
3548e138 | 2069 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2070 | Fdelete_frame (w->frame, Qnil); |
2071 | } | |
2072 | else if (NILP (w->parent)) | |
2073 | { | |
2074 | /* If we're deleting the buffer displayed in the | |
2075 | only window on the frame, find a new buffer to | |
2076 | display there. */ | |
2077 | Lisp_Object buffer; | |
2078 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2079 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2080 | if (EQ (window, selected_window)) |
2081 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2082 | } |
2083 | else | |
118ea242 | 2084 | Fdelete_window (window); |
7ab12479 JB |
2085 | } |
2086 | break; | |
2087 | ||
2088 | case GET_LARGEST_WINDOW: | |
20b69789 | 2089 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2090 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2091 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2092 | break; |
177c0ea7 | 2093 | |
c930dfab | 2094 | if (NILP (best_window)) |
118ea242 | 2095 | best_window = window; |
c930dfab GM |
2096 | else |
2097 | { | |
2098 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2099 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2100 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2101 | best_window = window; |
2102 | } | |
7ab12479 JB |
2103 | } |
2104 | break; | |
2105 | ||
2106 | case UNSHOW_BUFFER: | |
118ea242 | 2107 | if (EQ (w->buffer, obj)) |
7ab12479 | 2108 | { |
118ea242 GM |
2109 | Lisp_Object buffer; |
2110 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2111 | |
7ab12479 | 2112 | /* Find another buffer to show in this window. */ |
118ea242 | 2113 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2114 | |
38ab08d1 RS |
2115 | /* If this window is dedicated, and in a frame of its own, |
2116 | kill the frame. */ | |
118ea242 GM |
2117 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2118 | && !NILP (w->dedicated) | |
38ab08d1 | 2119 | && other_visible_frames (f)) |
45945a7b RS |
2120 | { |
2121 | /* Skip the other windows on this frame. | |
2122 | There might be one, the minibuffer! */ | |
118ea242 GM |
2123 | while (CONSP (XCDR (windows)) |
2124 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2125 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2126 | windows = XCDR (windows); | |
177c0ea7 | 2127 | |
45945a7b | 2128 | /* Now we can safely delete the frame. */ |
118ea242 | 2129 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2130 | } |
a5731348 SM |
2131 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2132 | { | |
2133 | Lisp_Object window; | |
2134 | XSETWINDOW (window, w); | |
2135 | /* If this window is dedicated and not the only window | |
2136 | in its frame, then kill it. */ | |
2137 | Fdelete_window (window); | |
2138 | } | |
38ab08d1 | 2139 | else |
38ab08d1 RS |
2140 | { |
2141 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2142 | w->dedicated = Qnil; |
949cf20f | 2143 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2144 | if (EQ (window, selected_window)) |
2145 | Fset_buffer (w->buffer); | |
38ab08d1 | 2146 | } |
7ab12479 JB |
2147 | } |
2148 | break; | |
3f8ab7bd | 2149 | |
e661376d KS |
2150 | case REDISPLAY_BUFFER_WINDOWS: |
2151 | if (EQ (w->buffer, obj)) | |
2152 | { | |
2153 | mark_window_display_accurate (window, 0); | |
40c6ee74 KS |
2154 | w->update_mode_line = Qt; |
2155 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2156 | ++update_mode_lines; | |
e661376d KS |
2157 | best_window = window; |
2158 | } | |
2159 | break; | |
2160 | ||
3f8ab7bd RS |
2161 | /* Check for a window that has a killed buffer. */ |
2162 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2163 | if (! NILP (w->buffer) |
2164 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2165 | abort (); |
118ea242 | 2166 | break; |
6bbd7a29 GM |
2167 | |
2168 | case WINDOW_LOOP_UNUSED: | |
2169 | break; | |
7ab12479 | 2170 | } |
7ab12479 | 2171 | } |
7ab12479 | 2172 | |
118ea242 | 2173 | UNGCPRO; |
7ab12479 | 2174 | return best_window; |
37962e60 | 2175 | } |
605be8af | 2176 | |
3f8ab7bd RS |
2177 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2178 | ||
233a4a2c | 2179 | void |
3f8ab7bd RS |
2180 | check_all_windows () |
2181 | { | |
2182 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2183 | } | |
2184 | ||
3cbb13c8 | 2185 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2186 | doc: /* Return the window least recently selected or used for display. |
a899216f | 2187 | Return a full-width window if possible. |
c2755926 | 2188 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2189 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2190 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2191 | If optional argument FRAME is `visible', search all visible frames. |
2192 | If FRAME is 0, search all visible and iconified frames. | |
2193 | If FRAME is t, search all frames. | |
2194 | If FRAME is nil, search only the selected frame. | |
2195 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2196 | (frame, dedicated) |
2197 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2198 | { |
2199 | register Lisp_Object w; | |
2200 | /* First try for a window that is full-width */ | |
20b69789 SM |
2201 | w = window_loop (GET_LRU_WINDOW, |
2202 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2203 | 0, frame); | |
265a9e55 | 2204 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2205 | return w; |
2206 | /* If none of them, try the rest */ | |
20b69789 SM |
2207 | return window_loop (GET_LRU_WINDOW, |
2208 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2209 | 0, frame); | |
7ab12479 JB |
2210 | } |
2211 | ||
3cbb13c8 | 2212 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2213 | doc: /* Return the largest window in area. |
c2755926 | 2214 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2215 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2216 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2217 | If optional argument FRAME is `visible', search all visible frames. |
2218 | If FRAME is 0, search all visible and iconified frames. | |
2219 | If FRAME is t, search all frames. | |
2220 | If FRAME is nil, search only the selected frame. | |
2221 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2222 | (frame, dedicated) |
2223 | Lisp_Object frame, dedicated; | |
7ab12479 | 2224 | { |
20b69789 | 2225 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2226 | frame); |
7ab12479 JB |
2227 | } |
2228 | ||
2229 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2230 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2231 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2232 | If optional argument FRAME is `visible', search all visible frames. |
2233 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2234 | If FRAME is t, search all frames. | |
2235 | If FRAME is nil, search only the selected frame. | |
2236 | If FRAME is a frame, search only that frame. */) | |
2237 | (buffer, frame) | |
2238 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2239 | { |
2240 | buffer = Fget_buffer (buffer); | |
017b2bad | 2241 | if (BUFFERP (buffer)) |
44fa5b1e | 2242 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2243 | else |
2244 | return Qnil; | |
2245 | } | |
2246 | ||
2247 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2248 | 0, 1, "", |
2249 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2250 | Only the frame WINDOW is on is affected. | |
2251 | This function tries to reduce display jumps | |
2252 | by keeping the text previously visible in WINDOW | |
2253 | in the same place on the frame. Doing this depends on | |
2254 | the value of (window-start WINDOW), so if calling this function | |
2255 | in a program gives strange scrolling, make sure the window-start | |
2256 | value is reasonable when this function is called. */) | |
2257 | (window) | |
7ab12479 JB |
2258 | Lisp_Object window; |
2259 | { | |
2260 | struct window *w; | |
00d3d838 | 2261 | int startpos; |
85fe3b5e | 2262 | int top, new_top; |
7ab12479 | 2263 | |
265a9e55 | 2264 | if (NILP (window)) |
7ab12479 JB |
2265 | window = selected_window; |
2266 | else | |
b7826503 | 2267 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2268 | w = XWINDOW (window); |
a2b38b3c | 2269 | |
00d3d838 | 2270 | startpos = marker_position (w->start); |
949cf20f | 2271 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2272 | |
a2b38b3c RS |
2273 | if (MINI_WINDOW_P (w) && top > 0) |
2274 | error ("Can't expand minibuffer to full frame"); | |
2275 | ||
70728a80 | 2276 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2277 | |
00d3d838 KH |
2278 | /* Try to minimize scrolling, by setting the window start to the point |
2279 | will cause the text at the old window start to be at the same place | |
2280 | on the frame. But don't try to do this if the window start is | |
2281 | outside the visible portion (as might happen when the display is | |
2282 | not current, due to typeahead). */ | |
949cf20f | 2283 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2284 | if (new_top != top |
2285 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2286 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2287 | { | |
2288 | struct position pos; | |
2289 | struct buffer *obuf = current_buffer; | |
2290 | ||
2291 | Fset_buffer (w->buffer); | |
2292 | /* This computation used to temporarily move point, but that can | |
2293 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2294 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2295 | |
b73ea88e | 2296 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2297 | w->window_end_valid = Qnil; |
b73ea88e RS |
2298 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2299 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2300 | : Qnil); |
80622eec RS |
2301 | /* We need to do this, so that the window-scroll-functions |
2302 | get called. */ | |
4d047f50 | 2303 | w->optional_new_start = Qt; |
00d3d838 KH |
2304 | |
2305 | set_buffer_internal (obuf); | |
2306 | } | |
5500c422 | 2307 | |
7ab12479 JB |
2308 | return Qnil; |
2309 | } | |
2310 | ||
2311 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2312 | 1, 2, "bDelete windows on (buffer): ", |
2313 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2314 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2315 | Optional second argument FRAME controls which frames are affected. |
2316 | If optional argument FRAME is `visible', search all visible frames. | |
2317 | If FRAME is 0, search all visible and iconified frames. | |
2318 | If FRAME is nil, search all frames. | |
2319 | If FRAME is t, search only the selected frame. | |
2320 | If FRAME is a frame, search only that frame. */) | |
2321 | (buffer, frame) | |
26f6279d | 2322 | Lisp_Object buffer, frame; |
7ab12479 | 2323 | { |
26f6279d JB |
2324 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2325 | expects. */ | |
c520265e RS |
2326 | if (NILP (frame)) |
2327 | frame = Qt; | |
2328 | else if (EQ (frame, Qt)) | |
2329 | frame = Qnil; | |
26f6279d | 2330 | |
265a9e55 | 2331 | if (!NILP (buffer)) |
7ab12479 JB |
2332 | { |
2333 | buffer = Fget_buffer (buffer); | |
b7826503 | 2334 | CHECK_BUFFER (buffer); |
26f6279d | 2335 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2336 | } |
177c0ea7 | 2337 | |
7ab12479 JB |
2338 | return Qnil; |
2339 | } | |
2340 | ||
2341 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2342 | Sreplace_buffer_in_windows, |
2343 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2344 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2345 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2346 | (buffer) |
7ab12479 JB |
2347 | Lisp_Object buffer; |
2348 | { | |
265a9e55 | 2349 | if (!NILP (buffer)) |
7ab12479 JB |
2350 | { |
2351 | buffer = Fget_buffer (buffer); | |
b7826503 | 2352 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2353 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2354 | } | |
2355 | return Qnil; | |
2356 | } | |
ff58478b RS |
2357 | |
2358 | /* Replace BUFFER with some other buffer in all windows | |
2359 | of all frames, even those on other keyboards. */ | |
2360 | ||
2361 | void | |
2362 | replace_buffer_in_all_windows (buffer) | |
2363 | Lisp_Object buffer; | |
2364 | { | |
27abb84f | 2365 | #ifdef MULTI_KBOARD |
ff58478b RS |
2366 | Lisp_Object tail, frame; |
2367 | ||
ff58478b RS |
2368 | /* A single call to window_loop won't do the job |
2369 | because it only considers frames on the current keyboard. | |
2370 | So loop manually over frames, and handle each one. */ | |
2371 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2372 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2373 | #else |
db7f721d | 2374 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2375 | #endif |
2376 | } | |
7ab12479 JB |
2377 | \f |
2378 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2379 | |
2380 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2381 | might crash Emacs. */ | |
5500c422 | 2382 | |
a481b3ea | 2383 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2384 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2385 | |
2386 | /* Make sure that window_min_height and window_min_width are | |
2387 | not too small; if they are, set them to safe minima. */ | |
2388 | ||
2389 | static void | |
2390 | check_min_window_sizes () | |
2391 | { | |
2392 | /* Smaller values might permit a crash. */ | |
2393 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2394 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2395 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2396 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2397 | } | |
2398 | ||
2399 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2400 | minimum allowable size. */ | |
5500c422 | 2401 | |
605be8af | 2402 | void |
a481b3ea | 2403 | check_frame_size (frame, rows, cols) |
605be8af JB |
2404 | FRAME_PTR frame; |
2405 | int *rows, *cols; | |
a481b3ea | 2406 | { |
628df3bf | 2407 | /* For height, we have to see: |
54b8bcb5 RS |
2408 | how many windows the frame has at minimum (one or two), |
2409 | and whether it has a menu bar or other special stuff at the top. */ | |
2410 | int min_height | |
2411 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2412 | ? MIN_SAFE_WINDOW_HEIGHT | |
2413 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2414 | |
5500c422 GM |
2415 | if (FRAME_TOP_MARGIN (frame) > 0) |
2416 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2417 | |
2418 | if (*rows < min_height) | |
2419 | *rows = min_height; | |
2420 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2421 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2422 | } | |
2423 | ||
c1636aa6 | 2424 | |
233a4a2c GM |
2425 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2426 | check if W's width can be changed, otherwise check W's height. | |
2427 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2428 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2429 | either. */ | |
c1636aa6 | 2430 | |
233a4a2c GM |
2431 | static int |
2432 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2433 | struct window *w; | |
2434 | int width_p, check_siblings_p; | |
2435 | { | |
2436 | int fixed_p; | |
2437 | struct window *c; | |
177c0ea7 | 2438 | |
233a4a2c GM |
2439 | if (!NILP (w->hchild)) |
2440 | { | |
2441 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2442 | |
233a4a2c GM |
2443 | if (width_p) |
2444 | { | |
2445 | /* A horiz. combination is fixed-width if all of if its | |
2446 | children are. */ | |
2447 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2448 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2449 | fixed_p = c == NULL; | |
2450 | } | |
2451 | else | |
2452 | { | |
2453 | /* A horiz. combination is fixed-height if one of if its | |
2454 | children is. */ | |
2455 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2456 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2457 | fixed_p = c != NULL; | |
2458 | } | |
2459 | } | |
2460 | else if (!NILP (w->vchild)) | |
2461 | { | |
2462 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2463 | |
233a4a2c GM |
2464 | if (width_p) |
2465 | { | |
2466 | /* A vert. combination is fixed-width if one of if its | |
2467 | children is. */ | |
2468 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2469 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2470 | fixed_p = c != NULL; | |
2471 | } | |
2472 | else | |
2473 | { | |
2474 | /* A vert. combination is fixed-height if all of if its | |
2475 | children are. */ | |
2476 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2477 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2478 | fixed_p = c == NULL; | |
2479 | } | |
2480 | } | |
2481 | else if (BUFFERP (w->buffer)) | |
2482 | { | |
3df0580e AS |
2483 | struct buffer *old = current_buffer; |
2484 | Lisp_Object val; | |
177c0ea7 | 2485 | |
3df0580e AS |
2486 | current_buffer = XBUFFER (w->buffer); |
2487 | val = find_symbol_value (Qwindow_size_fixed); | |
2488 | current_buffer = old; | |
a34dfd12 | 2489 | |
3df0580e AS |
2490 | fixed_p = 0; |
2491 | if (!EQ (val, Qunbound)) | |
2492 | { | |
2493 | fixed_p = !NILP (val); | |
177c0ea7 | 2494 | |
3df0580e AS |
2495 | if (fixed_p |
2496 | && ((EQ (val, Qheight) && width_p) | |
2497 | || (EQ (val, Qwidth) && !width_p))) | |
2498 | fixed_p = 0; | |
233a4a2c GM |
2499 | } |
2500 | ||
2501 | /* Can't tell if this one is resizable without looking at | |
2502 | siblings. If all siblings are fixed-size this one is too. */ | |
2503 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2504 | { | |
2505 | Lisp_Object child; | |
177c0ea7 | 2506 | |
233a4a2c GM |
2507 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2508 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2509 | break; | |
2510 | ||
2511 | if (NILP (child)) | |
2512 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2513 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2514 | break; | |
2515 | ||
2516 | if (NILP (child)) | |
2517 | fixed_p = 1; | |
2518 | } | |
2519 | } | |
2520 | else | |
2521 | fixed_p = 1; | |
2522 | ||
2523 | return fixed_p; | |
2524 | } | |
177c0ea7 | 2525 | |
233a4a2c GM |
2526 | |
2527 | /* Return the minimum size of window W, not taking fixed-width windows | |
2528 | into account. WIDTH_P non-zero means return the minimum width, | |
2529 | otherwise return the minimum height. If W is a combination window, | |
2530 | compute the minimum size from the minimum sizes of W's children. */ | |
2531 | ||
2532 | static int | |
2533 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2534 | struct window *w; |
2535 | int width_p; | |
2536 | { | |
233a4a2c | 2537 | struct window *c; |
c1636aa6 | 2538 | int size; |
177c0ea7 | 2539 | |
233a4a2c GM |
2540 | if (!NILP (w->hchild)) |
2541 | { | |
2542 | c = XWINDOW (w->hchild); | |
2543 | size = 0; | |
177c0ea7 | 2544 | |
233a4a2c GM |
2545 | if (width_p) |
2546 | { | |
2547 | /* The min width of a horizontal combination is | |
2548 | the sum of the min widths of its children. */ | |
2549 | while (c) | |
2550 | { | |
2551 | size += window_min_size_1 (c, width_p); | |
2552 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2553 | } | |
2554 | } | |
2555 | else | |
2556 | { | |
2557 | /* The min height a horizontal combination equals | |
2558 | the maximum of all min height of its children. */ | |
2559 | while (c) | |
2560 | { | |
2561 | int min_size = window_min_size_1 (c, width_p); | |
2562 | size = max (min_size, size); | |
2563 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2564 | } | |
2565 | } | |
2566 | } | |
2567 | else if (!NILP (w->vchild)) | |
2568 | { | |
2569 | c = XWINDOW (w->vchild); | |
2570 | size = 0; | |
177c0ea7 | 2571 | |
233a4a2c GM |
2572 | if (width_p) |
2573 | { | |
2574 | /* The min width of a vertical combination is | |
2575 | the maximum of the min widths of its children. */ | |
2576 | while (c) | |
2577 | { | |
2578 | int min_size = window_min_size_1 (c, width_p); | |
2579 | size = max (min_size, size); | |
2580 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2581 | } | |
2582 | } | |
2583 | else | |
2584 | { | |
2585 | /* The min height of a vertical combination equals | |
2586 | the sum of the min height of its children. */ | |
2587 | while (c) | |
2588 | { | |
2589 | size += window_min_size_1 (c, width_p); | |
2590 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2591 | } | |
2592 | } | |
2593 | } | |
c1636aa6 GM |
2594 | else |
2595 | { | |
233a4a2c | 2596 | if (width_p) |
da7520de CY |
2597 | size = max (window_min_width, |
2598 | (MIN_SAFE_WINDOW_WIDTH | |
2599 | + WINDOW_FRINGE_COLS (w) | |
2600 | + WINDOW_SCROLL_BAR_COLS (w))); | |
c1636aa6 | 2601 | else |
233a4a2c GM |
2602 | { |
2603 | if (MINI_WINDOW_P (w) | |
2604 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2605 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2606 | size = 1; |
2607 | else | |
2608 | size = window_min_height; | |
2609 | } | |
c1636aa6 GM |
2610 | } |
2611 | ||
2612 | return size; | |
2613 | } | |
2614 | ||
2615 | ||
233a4a2c GM |
2616 | /* Return the minimum size of window W, taking fixed-size windows into |
2617 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2618 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2619 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2620 | unless FIXED is null. */ | |
7ab12479 | 2621 | |
233a4a2c | 2622 | static int |
f984d4fc | 2623 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2624 | struct window *w; |
f984d4fc | 2625 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2626 | { |
2627 | int size, fixed_p; | |
2628 | ||
f984d4fc GM |
2629 | if (ignore_fixed_p) |
2630 | fixed_p = 0; | |
2631 | else | |
2632 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2633 | |
233a4a2c GM |
2634 | if (fixed) |
2635 | *fixed = fixed_p; | |
177c0ea7 | 2636 | |
233a4a2c | 2637 | if (fixed_p) |
949cf20f | 2638 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2639 | else |
2640 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2641 | |
233a4a2c GM |
2642 | return size; |
2643 | } | |
2644 | ||
2645 | ||
79fd290e | 2646 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2647 | Return 1 if window width is ok after adjustment; 0 if window |
2648 | is still too narrow. */ | |
2649 | ||
2650 | static int | |
2651 | adjust_window_margins (w) | |
2652 | struct window *w; | |
2653 | { | |
2654 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2655 | - WINDOW_FRINGE_COLS (w) | |
2656 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2657 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2658 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2659 | ||
2660 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2661 | return 1; | |
2662 | ||
2663 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2664 | return 0; | |
2665 | ||
2666 | /* Window's text area is too narrow, but reducing the window | |
2667 | margins will fix that. */ | |
2668 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2669 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2670 | { | |
2671 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2672 | w->left_margin_cols = w->right_margin_cols | |
2673 | = make_number (margin_cols/2); | |
2674 | else | |
2675 | w->right_margin_cols = make_number (margin_cols); | |
2676 | } | |
2677 | else | |
2678 | w->left_margin_cols = make_number (margin_cols); | |
2679 | return 1; | |
2680 | } | |
2681 | ||
0aa513ed JD |
2682 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2683 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2684 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2685 | can shrink is SHRINKABLE. | |
2686 | The minimum size a window can have is MIN_SIZE. | |
2687 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2688 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2689 | shrinking rows. | |
2690 | ||
2691 | This function returns an allocated array of new sizes that the caller | |
2692 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2693 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2694 | the second, and so on. | |
2695 | ||
2696 | This function tries to keep windows at least at the minimum size | |
2697 | and resize other windows before it resizes any window to zero (i.e. | |
2698 | delete that window). | |
2699 | ||
2700 | Windows are resized proportional to their size, so bigger windows | |
2701 | shrink more than smaller windows. */ | |
2702 | static int * | |
2703 | shrink_windows (total, size, nchildren, shrinkable, | |
2704 | min_size, resize_fixed_p, forward, width_p) | |
2705 | int total, size, nchildren, shrinkable, min_size; | |
2706 | int resize_fixed_p, width_p; | |
2707 | Lisp_Object forward; | |
2708 | { | |
2709 | int available_resize = 0; | |
2710 | int *new_sizes; | |
2711 | struct window *c; | |
2712 | Lisp_Object child; | |
2713 | int smallest = total; | |
2714 | int total_removed = 0; | |
2715 | int total_shrink = total - size; | |
2716 | int i; | |
2717 | ||
2718 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2719 | ||
2720 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2721 | { | |
2722 | int child_size; | |
2723 | ||
2724 | c = XWINDOW (child); | |
2725 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2726 | ||
2727 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2728 | new_sizes[i] = -1; | |
2729 | else | |
2730 | { | |
2731 | new_sizes[i] = child_size; | |
2732 | if (child_size > min_size) | |
2733 | available_resize += child_size - min_size; | |
2734 | } | |
2735 | } | |
2736 | /* We might need to shrink some windows to zero. Find the smallest | |
2737 | windows and set them to 0 until we can fulfil the new size. */ | |
2738 | ||
2739 | while (shrinkable > 1 && size + available_resize < total) | |
2740 | { | |
2741 | for (i = 0; i < nchildren; ++i) | |
2742 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2743 | smallest = new_sizes[i]; | |
2744 | ||
2745 | for (i = 0; i < nchildren; ++i) | |
2746 | if (new_sizes[i] == smallest) | |
2747 | { | |
2748 | /* Resize this window down to zero. */ | |
2749 | new_sizes[i] = 0; | |
2750 | if (smallest > min_size) | |
2751 | available_resize -= smallest - min_size; | |
2752 | available_resize += smallest; | |
2753 | --shrinkable; | |
2754 | total_removed += smallest; | |
2755 | ||
ef614e04 JD |
2756 | /* We don't know what the smallest is now. */ |
2757 | smallest = total; | |
2758 | ||
0aa513ed JD |
2759 | /* Out of for, just remove one window at the time and |
2760 | check again if we have enough space. */ | |
2761 | break; | |
2762 | } | |
2763 | } | |
2764 | ||
2765 | /* Now, calculate the new sizes. Try to shrink each window | |
2766 | proportional to its size. */ | |
2767 | for (i = 0; i < nchildren; ++i) | |
2768 | { | |
2769 | if (new_sizes[i] > min_size) | |
2770 | { | |
2771 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2772 | if (new_sizes[i] - to_shrink < min_size) | |
2773 | to_shrink = new_sizes[i] - min_size; | |
2774 | new_sizes[i] -= to_shrink; | |
2775 | total_removed += to_shrink; | |
2776 | } | |
2777 | } | |
2778 | ||
2779 | /* Any reminder due to rounding, we just subtract from windows | |
2780 | that are left and still can be shrunk. */ | |
2781 | while (total_shrink > total_removed) | |
2782 | { | |
ef614e04 JD |
2783 | int nonzero_sizes = 0; |
2784 | int nonzero_idx = -1; | |
2785 | ||
2786 | for (i = 0; i < nchildren; ++i) | |
2787 | if (new_sizes[i] > 0) | |
2788 | { | |
2789 | ++nonzero_sizes; | |
2790 | nonzero_idx = i; | |
2791 | } | |
c49a0495 | 2792 | |
0aa513ed JD |
2793 | for (i = 0; i < nchildren; ++i) |
2794 | if (new_sizes[i] > min_size) | |
2795 | { | |
2796 | --new_sizes[i]; | |
2797 | ++total_removed; | |
2798 | ||
2799 | /* Out of for, just shrink one window at the time and | |
2800 | check again if we have enough space. */ | |
2801 | break; | |
2802 | } | |
ef614e04 JD |
2803 | |
2804 | ||
2805 | /* Special case, only one window left. */ | |
2806 | if (nonzero_sizes == 1) | |
2807 | break; | |
2808 | } | |
2809 | ||
2810 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2811 | while (total_shrink < total_removed) | |
2812 | { | |
2813 | for (i = 0; i < nchildren; ++i) | |
2814 | { | |
2815 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2816 | { | |
2817 | ++new_sizes[i]; | |
2818 | --total_removed; | |
2819 | break; | |
2820 | } | |
2821 | } | |
0aa513ed JD |
2822 | } |
2823 | ||
2824 | return new_sizes; | |
2825 | } | |
949cf20f | 2826 | |
233a4a2c GM |
2827 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2828 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2829 | keep their proportionate size relative to WINDOW. Propagate | |
2830 | WINDOW's top or left edge position to children. Delete windows | |
192c3131 RS |
2831 | that become too small unless NODELETE_P is non-zero. |
2832 | ||
2833 | If NODELETE_P is 2, that means we do delete windows that are | |
2834 | too small, even if they were too small before! */ | |
233a4a2c GM |
2835 | |
2836 | static void | |
2837 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2838 | Lisp_Object window; |
233a4a2c | 2839 | int size, width_p, nodelete_p; |
7ab12479 | 2840 | { |
233a4a2c GM |
2841 | struct window *w = XWINDOW (window); |
2842 | struct window *c; | |
2843 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 2844 | int old_size, min_size, safe_min_size; |
7ab12479 | 2845 | |
949cf20f KS |
2846 | /* We test nodelete_p != 2 and nodelete_p != 1 below, so it |
2847 | seems like it's too soon to do this here. ++KFS. */ | |
192c3131 RS |
2848 | if (nodelete_p == 2) |
2849 | nodelete_p = 0; | |
2850 | ||
a481b3ea | 2851 | check_min_window_sizes (); |
7ae2f10f | 2852 | size = max (0, size); |
177c0ea7 | 2853 | |
b5f05b50 GM |
2854 | /* If the window has been "too small" at one point, |
2855 | don't delete it for being "too small" in the future. | |
2856 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2857 | if (width_p) |
2858 | { | |
949cf20f | 2859 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 2860 | min_size = window_min_width; |
949cf20f KS |
2861 | /* Ensure that there is room for the scroll bar and fringes! |
2862 | We may reduce display margins though. */ | |
2863 | safe_min_size = (MIN_SAFE_WINDOW_WIDTH | |
2864 | + WINDOW_FRINGE_COLS (w) | |
2865 | + WINDOW_SCROLL_BAR_COLS (w)); | |
233a4a2c GM |
2866 | } |
2867 | else | |
2868 | { | |
949cf20f | 2869 | old_size = XINT (w->total_lines); |
233a4a2c | 2870 | min_size = window_min_height; |
949cf20f | 2871 | safe_min_size = MIN_SAFE_WINDOW_HEIGHT; |
233a4a2c | 2872 | } |
192c3131 RS |
2873 | |
2874 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
2875 | w->too_small_ok = Qt; |
2876 | ||
233a4a2c | 2877 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 2878 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 2879 | { |
b5f05b50 | 2880 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 2881 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
2882 | if (min_size < safe_min_size) |
2883 | min_size = safe_min_size; | |
233a4a2c | 2884 | if (size < min_size) |
c1636aa6 GM |
2885 | { |
2886 | delete_window (window); | |
2887 | return; | |
2888 | } | |
7ab12479 JB |
2889 | } |
2890 | ||
233a4a2c | 2891 | /* Set redisplay hints. */ |
7ae2f10f GM |
2892 | w->last_modified = make_number (0); |
2893 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 2894 | windows_or_buffers_changed++; |
7ae2f10f | 2895 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 2896 | |
233a4a2c GM |
2897 | if (width_p) |
2898 | { | |
2899 | sideward = &w->vchild; | |
2900 | forward = &w->hchild; | |
949cf20f KS |
2901 | w->total_cols = make_number (size); |
2902 | adjust_window_margins (w); | |
233a4a2c GM |
2903 | } |
2904 | else | |
2905 | { | |
2906 | sideward = &w->hchild; | |
2907 | forward = &w->vchild; | |
949cf20f KS |
2908 | w->total_lines = make_number (size); |
2909 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
2910 | } |
2911 | ||
2912 | if (!NILP (*sideward)) | |
7ab12479 | 2913 | { |
233a4a2c | 2914 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2915 | { |
233a4a2c GM |
2916 | c = XWINDOW (child); |
2917 | if (width_p) | |
949cf20f | 2918 | c->left_col = w->left_col; |
233a4a2c | 2919 | else |
949cf20f | 2920 | c->top_line = w->top_line; |
233a4a2c | 2921 | size_window (child, size, width_p, nodelete_p); |
7ab12479 JB |
2922 | } |
2923 | } | |
233a4a2c | 2924 | else if (!NILP (*forward)) |
7ab12479 | 2925 | { |
233a4a2c GM |
2926 | int fixed_size, each, extra, n; |
2927 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 2928 | int last_pos, first_pos, nchildren, total; |
0aa513ed | 2929 | int *new_sizes = NULL; |
233a4a2c GM |
2930 | |
2931 | /* Determine the fixed-size portion of the this window, and the | |
2932 | number of child windows. */ | |
8b6d9dc9 | 2933 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 2934 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 2935 | { |
8b6d9dc9 | 2936 | int child_size; |
177c0ea7 | 2937 | |
7ab12479 | 2938 | c = XWINDOW (child); |
949cf20f | 2939 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 2940 | total += child_size; |
177c0ea7 | 2941 | |
233a4a2c GM |
2942 | if (window_fixed_size_p (c, width_p, 0)) |
2943 | { | |
8b6d9dc9 | 2944 | fixed_size += child_size; |
233a4a2c GM |
2945 | ++nfixed; |
2946 | } | |
2947 | } | |
7ab12479 | 2948 | |
233a4a2c GM |
2949 | /* If the new size is smaller than fixed_size, or if there |
2950 | aren't any resizable windows, allow resizing fixed-size | |
2951 | windows. */ | |
2952 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2953 | ||
0aa513ed | 2954 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
2955 | value of extra takes care of rounding errors. */ |
2956 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
0aa513ed JD |
2957 | if (size < total && n > 1) |
2958 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
2959 | resize_fixed_p, *forward, width_p); | |
2960 | else | |
2961 | { | |
2962 | each = (size - total) / n; | |
2963 | extra = (size - total) - n * each; | |
2964 | } | |
233a4a2c GM |
2965 | |
2966 | /* Compute new children heights and edge positions. */ | |
949cf20f | 2967 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 2968 | last_pos = first_pos; |
0aa513ed | 2969 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
2970 | { |
2971 | int new_size, old_size; | |
177c0ea7 | 2972 | |
233a4a2c | 2973 | c = XWINDOW (child); |
949cf20f | 2974 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 2975 | new_size = old_size; |
7ab12479 | 2976 | |
233a4a2c GM |
2977 | /* The top or left edge position of this child equals the |
2978 | bottom or right edge of its predecessor. */ | |
2979 | if (width_p) | |
949cf20f | 2980 | c->left_col = make_number (last_pos); |
233a4a2c | 2981 | else |
949cf20f | 2982 | c->top_line = make_number (last_pos); |
7ab12479 | 2983 | |
233a4a2c GM |
2984 | /* If this child can be resized, do it. */ |
2985 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2986 | { | |
0aa513ed | 2987 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
2988 | extra = 0; |
2989 | } | |
177c0ea7 | 2990 | |
233a4a2c GM |
2991 | /* Set new height. Note that size_window also propagates |
2992 | edge positions to children, so it's not a no-op if we | |
2993 | didn't change the child's size. */ | |
2994 | size_window (child, new_size, width_p, 1); | |
2995 | ||
2996 | /* Remember the bottom/right edge position of this child; it | |
2997 | will be used to set the top/left edge of the next child. */ | |
0aa513ed | 2998 | last_pos += new_size; |
7ab12479 | 2999 | } |
233a4a2c | 3000 | |
0aa513ed JD |
3001 | if (new_sizes) xfree (new_sizes); |
3002 | ||
233a4a2c GM |
3003 | /* We should have covered the parent exactly with child windows. */ |
3004 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3005 | |
7ab12479 | 3006 | /* Now delete any children that became too small. */ |
233a4a2c GM |
3007 | if (!nodelete_p) |
3008 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 3009 | { |
233a4a2c GM |
3010 | int child_size; |
3011 | c = XWINDOW (child); | |
949cf20f | 3012 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
192c3131 | 3013 | size_window (child, child_size, width_p, 2); |
7ab12479 JB |
3014 | } |
3015 | } | |
3016 | } | |
3017 | ||
233a4a2c GM |
3018 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
3019 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3020 | that become too small in the process. (The caller should check | |
3021 | later and do so if appropriate.) */ | |
7ab12479 | 3022 | |
5e14b1fc | 3023 | void |
233a4a2c | 3024 | set_window_height (window, height, nodelete) |
7ab12479 | 3025 | Lisp_Object window; |
233a4a2c | 3026 | int height; |
7ab12479 JB |
3027 | int nodelete; |
3028 | { | |
233a4a2c GM |
3029 | size_window (window, height, 0, nodelete); |
3030 | } | |
7ab12479 | 3031 | |
7ab12479 | 3032 | |
233a4a2c GM |
3033 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
3034 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3035 | that become too small in the process. (The caller should check | |
3036 | later and do so if appropriate.) */ | |
7ab12479 | 3037 | |
233a4a2c GM |
3038 | void |
3039 | set_window_width (window, width, nodelete) | |
3040 | Lisp_Object window; | |
3041 | int width; | |
3042 | int nodelete; | |
3043 | { | |
3044 | size_window (window, width, 1, nodelete); | |
7ab12479 | 3045 | } |
233a4a2c | 3046 | |
cdbc7fec KS |
3047 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3048 | ||
3049 | void | |
3050 | change_window_heights (window, n) | |
3051 | Lisp_Object window; | |
3052 | int n; | |
3053 | { | |
3054 | struct window *w = XWINDOW (window); | |
3055 | ||
949cf20f KS |
3056 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3057 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3058 | |
949cf20f KS |
3059 | if (INTEGERP (w->orig_top_line)) |
3060 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3061 | if (INTEGERP (w->orig_total_lines)) | |
3062 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3063 | |
3064 | /* Handle just the top child in a vertical split. */ | |
3065 | if (!NILP (w->vchild)) | |
3066 | change_window_heights (w->vchild, n); | |
3067 | ||
3068 | /* Adjust all children in a horizontal split. */ | |
3069 | for (window = w->hchild; !NILP (window); window = w->next) | |
3070 | { | |
3071 | w = XWINDOW (window); | |
3072 | change_window_heights (window, n); | |
3073 | } | |
3074 | } | |
3075 | ||
7ab12479 | 3076 | \f |
1d8d96fa | 3077 | int window_select_count; |
7ab12479 | 3078 | |
5b03d3c0 RS |
3079 | Lisp_Object |
3080 | Fset_window_buffer_unwind (obuf) | |
3081 | Lisp_Object obuf; | |
3082 | { | |
3083 | Fset_buffer (obuf); | |
3084 | return Qnil; | |
3085 | } | |
3086 | ||
56613f06 SM |
3087 | EXFUN (Fset_window_fringes, 4); |
3088 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3089 | |
5500c422 GM |
3090 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3091 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3092 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3093 | margins, fringes, and scroll-bar settings of the window are not | |
3094 | reset from the buffer's local settings. */ | |
7ab12479 | 3095 | |
5500c422 | 3096 | void |
949cf20f | 3097 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3098 | Lisp_Object window, buffer; |
949cf20f | 3099 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3100 | { |
3101 | struct window *w = XWINDOW (window); | |
3102 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3103 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3104 | |
3105 | w->buffer = buffer; | |
86e48436 RS |
3106 | |
3107 | if (EQ (window, selected_window)) | |
5500c422 | 3108 | b->last_selected_window = window; |
beb4e312 | 3109 | |
c49a0495 KS |
3110 | /* Let redisplay errors through. */ |
3111 | b->display_error_modiff = 0; | |
3112 | ||
beb4e312 | 3113 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3114 | if (INTEGERP (b->display_count)) |
3115 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3116 | b->display_time = Fcurrent_time (); | |
86e48436 | 3117 | |
d834a2e9 | 3118 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3119 | XSETFASTINT (w->window_end_vpos, 0); |
3120 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3121 | w->window_end_valid = Qnil; |
1c686c99 | 3122 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3123 | w->vscroll = 0; |
5500c422 | 3124 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3125 | set_marker_restricted (w->start, |
5500c422 | 3126 | make_number (b->last_window_start), |
7ab12479 JB |
3127 | buffer); |
3128 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3129 | w->force_start = Qnil; |
d834a2e9 | 3130 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3131 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3132 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3133 | |
3134 | /* We must select BUFFER for running the window-scroll-functions. | |
3135 | If WINDOW is selected, switch permanently. | |
3136 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3137 | if (EQ (window, selected_window)) |
3138 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3139 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3140 | because that might itself be a local variable. */ | |
3141 | else if (window_initialized) | |
3142 | { | |
3143 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3144 | Fset_buffer (buffer); | |
3145 | } | |
3146 | ||
949cf20f KS |
3147 | if (!keep_margins_p) |
3148 | { | |
3149 | /* Set left and right marginal area width etc. from buffer. */ | |
3150 | ||
79fd290e | 3151 | /* This may call adjust_window_margins three times, so |
949cf20f | 3152 | temporarily disable window margins. */ |
3834380d KS |
3153 | Lisp_Object save_left = w->left_margin_cols; |
3154 | Lisp_Object save_right = w->right_margin_cols; | |
3155 | ||
949cf20f KS |
3156 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3157 | ||
3158 | Fset_window_fringes (window, | |
3159 | b->left_fringe_width, b->right_fringe_width, | |
3160 | b->fringes_outside_margins); | |
3161 | ||
3162 | Fset_window_scroll_bars (window, | |
3163 | b->scroll_bar_width, | |
3164 | b->vertical_scroll_bar_type, Qnil); | |
3165 | ||
3834380d KS |
3166 | w->left_margin_cols = save_left; |
3167 | w->right_margin_cols = save_right; | |
3168 | ||
949cf20f KS |
3169 | Fset_window_margins (window, |
3170 | b->left_margin_cols, b->right_margin_cols); | |
3171 | } | |
7ab12479 | 3172 | |
5500c422 GM |
3173 | if (run_hooks_p) |
3174 | { | |
3175 | if (! NILP (Vwindow_scroll_functions)) | |
3176 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3177 | Fmarker_position (w->start)); | |
3178 | ||
3179 | if (! NILP (Vwindow_configuration_change_hook) | |
3180 | && ! NILP (Vrun_hooks)) | |
3181 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3182 | } | |
543f5fb1 | 3183 | |
5b03d3c0 | 3184 | unbind_to (count, Qnil); |
5500c422 | 3185 | } |
5b03d3c0 | 3186 | |
5500c422 | 3187 | |
949cf20f | 3188 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3189 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3190 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3191 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3192 | display margins, fringe widths, and scroll bar settings are maintained; |
3193 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3194 | defaults. |
3195 | ||
3196 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3197 | (window, buffer, keep_margins) |
56613f06 | 3198 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3199 | { |
3200 | register Lisp_Object tem; | |
3201 | register struct window *w = decode_window (window); | |
5500c422 | 3202 | |
bed0c171 | 3203 | XSETWINDOW (window, w); |
5500c422 | 3204 | buffer = Fget_buffer (buffer); |
b7826503 | 3205 | CHECK_BUFFER (buffer); |
5500c422 GM |
3206 | |
3207 | if (NILP (XBUFFER (buffer)->name)) | |
3208 | error ("Attempt to display deleted buffer"); | |
3209 | ||
3210 | tem = w->buffer; | |
3211 | if (NILP (tem)) | |
3212 | error ("Window is deleted"); | |
3213 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3214 | is first being set up. */ | |
3215 | { | |
3216 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3217 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3218 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3219 | |
3220 | unshow_buffer (w); | |
3221 | } | |
3222 | ||
949cf20f | 3223 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3224 | return Qnil; |
3225 | } | |
3226 | ||
2d0834cc SM |
3227 | /* Note that selected_window can be nil |
3228 | when this is called from Fset_window_configuration. */ | |
3229 | ||
14d87dc9 | 3230 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3231 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3232 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3233 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3234 | Optional second arg NORECORD non-nil means |
3235 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3236 | |
fdb82f93 PJ |
3237 | Note that the main editor command loop |
3238 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3239 | (window, norecord) |
3240 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3241 | { |
3242 | register struct window *w; | |
719eaeb1 | 3243 | register struct window *ow; |
1ae1a37d | 3244 | struct frame *sf; |
7ab12479 | 3245 | |
b7826503 | 3246 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3247 | |
3248 | w = XWINDOW (window); | |
50e88778 | 3249 | w->frozen_window_start_p = 0; |
7ab12479 | 3250 | |
2a1893f4 SM |
3251 | ++window_select_count; |
3252 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3253 | if (EQ (window, selected_window)) |
3254 | return window; | |
3255 | ||
a46c0153 RS |
3256 | /* Store the current buffer's actual point into the |
3257 | old selected window. It belongs to that window, | |
3258 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3259 | if (!NILP (selected_window)) |
3260 | { | |
3261 | ow = XWINDOW (selected_window); | |
3262 | if (! NILP (ow->buffer)) | |
3263 | set_marker_both (ow->pointm, ow->buffer, | |
3264 | BUF_PT (XBUFFER (ow->buffer)), | |
3265 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3266 | } | |
7ab12479 JB |
3267 | |
3268 | selected_window = window; | |
1ae1a37d | 3269 | sf = SELECTED_FRAME (); |
d1755117 RS |
3270 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
3271 | { | |
3272 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3273 | /* Use this rather than Fhandle_switch_frame | |
3274 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3275 | move around in the state where a minibuffer in a separate | |
3276 | frame is active. */ | |
c869384d | 3277 | Fselect_frame (WINDOW_FRAME (w)); |
d1755117 RS |
3278 | } |
3279 | else | |
1ae1a37d | 3280 | sf->selected_window = window; |
7ab12479 | 3281 | |
14d87dc9 | 3282 | if (NILP (norecord)) |
b7354ddf | 3283 | record_buffer (w->buffer); |
7ab12479 JB |
3284 | Fset_buffer (w->buffer); |
3285 | ||
86e48436 RS |
3286 | XBUFFER (w->buffer)->last_selected_window = window; |
3287 | ||
7ab12479 JB |
3288 | /* Go to the point recorded in the window. |
3289 | This is important when the buffer is in more | |
3290 | than one window. It also matters when | |
3291 | redisplay_window has altered point after scrolling, | |
3292 | because it makes the change only in the window. */ | |
3293 | { | |
3294 | register int new_point = marker_position (w->pointm); | |
3295 | if (new_point < BEGV) | |
3296 | SET_PT (BEGV); | |
a9c95e08 | 3297 | else if (new_point > ZV) |
7ab12479 JB |
3298 | SET_PT (ZV); |
3299 | else | |
3300 | SET_PT (new_point); | |
3301 | } | |
3302 | ||
3303 | windows_or_buffers_changed++; | |
3304 | return window; | |
3305 | } | |
14d87dc9 SM |
3306 | |
3307 | static Lisp_Object | |
3308 | select_window_norecord (window) | |
3309 | Lisp_Object window; | |
3310 | { | |
3311 | return Fselect_window (window, Qt); | |
3312 | } | |
b7354ddf | 3313 | \f |
441a127e RS |
3314 | /* Deiconify the frame containing the window WINDOW, |
3315 | unless it is the selected frame; | |
3316 | then return WINDOW. | |
3317 | ||
3318 | The reason for the exception for the selected frame | |
3319 | is that it seems better not to change the selected frames visibility | |
3320 | merely because of displaying a different buffer in it. | |
3321 | The deiconification is useful when a buffer gets shown in | |
3322 | another frame that you were not using lately. */ | |
d07f802a RS |
3323 | |
3324 | static Lisp_Object | |
3325 | display_buffer_1 (window) | |
3326 | Lisp_Object window; | |
3327 | { | |
1ae1a37d GM |
3328 | Lisp_Object frame = XWINDOW (window)->frame; |
3329 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3330 | |
d07f802a | 3331 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3332 | |
2d0834cc SM |
3333 | if (EQ (frame, selected_frame)) |
3334 | ; /* Assume the selected frame is already visible enough. */ | |
3335 | else if (minibuf_level > 0 | |
3336 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3337 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3338 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3339 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3340 | else | |
60117126 RS |
3341 | { |
3342 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3343 | Fmake_frame_visible (frame); |
37962e60 | 3344 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3345 | Fraise_frame (frame); |
60117126 | 3346 | } |
177c0ea7 | 3347 | |
d07f802a RS |
3348 | return window; |
3349 | } | |
3350 | ||
4628f7a4 | 3351 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3352 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3353 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3354 | special frame for that buffer using the default frame parameters. | |
3355 | ||
3356 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3357 | to make a frame for that buffer. |
3358 | The variables `special-display-buffer-names' | |
3359 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3360 | (buffer_name) |
4628f7a4 EN |
3361 | Lisp_Object buffer_name; |
3362 | { | |
3363 | Lisp_Object tem; | |
3364 | ||
b7826503 | 3365 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3366 | |
3367 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3368 | if (!NILP (tem)) | |
3369 | return Qt; | |
3370 | ||
3371 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3372 | if (!NILP (tem)) | |
3373 | return XCDR (tem); | |
3374 | ||
3375 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3376 | { | |
3377 | Lisp_Object car = XCAR (tem); | |
3378 | if (STRINGP (car) | |
3379 | && fast_string_match (car, buffer_name) >= 0) | |
3380 | return Qt; | |
3381 | else if (CONSP (car) | |
3382 | && STRINGP (XCAR (car)) | |
3383 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3384 | return XCDR (car); |
4628f7a4 EN |
3385 | } |
3386 | return Qnil; | |
177c0ea7 | 3387 | } |
4628f7a4 EN |
3388 | |
3389 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3390 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3391 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3392 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3393 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3394 | (buffer_name) | |
4628f7a4 EN |
3395 | Lisp_Object buffer_name; |
3396 | { | |
3397 | Lisp_Object tem; | |
3398 | ||
b7826503 | 3399 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3400 | |
3401 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3402 | if (!NILP (tem)) | |
3403 | return Qt; | |
3404 | ||
3405 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3406 | if (!NILP (tem)) | |
3407 | return Qt; | |
3408 | ||
3409 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3410 | { | |
3411 | Lisp_Object car = XCAR (tem); | |
3412 | if (STRINGP (car) | |
3413 | && fast_string_match (car, buffer_name) >= 0) | |
3414 | return Qt; | |
3415 | else if (CONSP (car) | |
3416 | && STRINGP (XCAR (car)) | |
3417 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3418 | return Qt; | |
3419 | } | |
3420 | return Qnil; | |
3421 | } | |
3422 | ||
fdb82f93 | 3423 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3424 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3425 | "BDisplay buffer: \nP", |
3426 | doc: /* Make BUFFER appear in some window but don't select it. | |
c2755926 LT |
3427 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
3428 | a buffer. | |
fdb82f93 PJ |
3429 | If BUFFER is shown already in some window, just use that one, |
3430 | unless the window is the selected window and the optional second | |
3431 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3432 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3433 | Returns the window displaying BUFFER. | |
079d288f | 3434 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3435 | displaying BUFFER, then simply raise that frame. |
3436 | ||
9a7e95f3 RS |
3437 | The variables `special-display-buffer-names', |
3438 | `special-display-regexps', `same-window-buffer-names', and | |
3439 | `same-window-regexps' customize how certain buffer names are handled. | |
3440 | The latter two take effect only if NOT-THIS-WINDOW is t. | |
fdb82f93 PJ |
3441 | |
3442 | If optional argument FRAME is `visible', search all visible frames. | |
3443 | If FRAME is 0, search all visible and iconified frames. | |
3444 | If FRAME is t, search all frames. | |
3445 | If FRAME is a frame, search only that frame. | |
3446 | If FRAME is nil, search only the selected frame | |
3447 | (actually the last nonminibuffer frame), | |
3448 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3449 | which means search visible and iconified frames. | |
3450 | ||
876e2665 GM |
3451 | If a full-width window on a splittable frame is available to display |
3452 | the buffer, it may be split, subject to the value of the variable | |
3453 | `split-height-threshold'. | |
3454 | ||
fdb82f93 PJ |
3455 | If `even-window-heights' is non-nil, window heights will be evened out |
3456 | if displaying the buffer causes two vertically adjacent windows to be | |
3457 | displayed. */) | |
3458 | (buffer, not_this_window, frame) | |
53f76081 | 3459 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3460 | { |
aee631c2 | 3461 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3462 | struct frame *f; |
7ab12479 | 3463 | |
aee631c2 | 3464 | swp = Qnil; |
7ab12479 | 3465 | buffer = Fget_buffer (buffer); |
b7826503 | 3466 | CHECK_BUFFER (buffer); |
7ab12479 | 3467 | |
265a9e55 | 3468 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3469 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3470 | ||
265a9e55 | 3471 | if (NILP (not_this_window) |
7ab12479 | 3472 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3473 | return display_buffer_1 (selected_window); |
7ab12479 | 3474 | |
855d8627 RS |
3475 | /* See if the user has specified this buffer should appear |
3476 | in the selected window. */ | |
3477 | if (NILP (not_this_window)) | |
3478 | { | |
aee631c2 RS |
3479 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3480 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3481 | { |
3482 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3483 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3484 | } |
855d8627 RS |
3485 | } |
3486 | ||
079d288f | 3487 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3488 | look for a window showing BUFFER on any visible or iconified frame. |
3489 | Otherwise search only the current frame. */ | |
53f76081 RS |
3490 | if (! NILP (frame)) |
3491 | tem = frame; | |
9c3da604 GM |
3492 | else if (pop_up_frames |
3493 | || display_buffer_reuse_frames | |
3494 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3495 | XSETFASTINT (tem, 0); |
3496 | else | |
73dc5198 | 3497 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3498 | |
73dc5198 | 3499 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3500 | if (!NILP (window) |
3501 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3502 | return display_buffer_1 (window); |
7ab12479 | 3503 | |
a90712c2 | 3504 | /* Certain buffer names get special handling. */ |
aee631c2 | 3505 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3506 | { |
4628f7a4 EN |
3507 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3508 | if (EQ (tem, Qt)) | |
a90712c2 | 3509 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3510 | if (CONSP (tem)) |
3511 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3512 | } |
3513 | ||
44fa5b1e JB |
3514 | /* If there are no frames open that have more than a minibuffer, |
3515 | we need to create a new frame. */ | |
3516 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3517 | { |
a90712c2 | 3518 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3519 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3520 | return display_buffer_1 (window); |
7ab12479 | 3521 | } |
7ab12479 | 3522 | |
1ae1a37d | 3523 | f = SELECTED_FRAME (); |
43bad991 | 3524 | if (pop_up_windows |
1ae1a37d | 3525 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3526 | /* If the current frame is a special display frame, |
3527 | don't try to reuse its windows. */ | |
1ae1a37d | 3528 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3529 | { |
12cae7c0 KH |
3530 | Lisp_Object frames; |
3531 | ||
37962e60 | 3532 | frames = Qnil; |
1ae1a37d | 3533 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3534 | XSETFRAME (frames, last_nonminibuf_frame); |
a5731348 | 3535 | /* Don't try to create a window if we would get an error. */ |
7ab12479 JB |
3536 | if (split_height_threshold < window_min_height << 1) |
3537 | split_height_threshold = window_min_height << 1; | |
3538 | ||
cee67da9 RS |
3539 | /* Note that both Fget_largest_window and Fget_lru_window |
3540 | ignore minibuffers and dedicated windows. | |
3541 | This means they can return nil. */ | |
7ab12479 | 3542 | |
cee67da9 RS |
3543 | /* If the frame we would try to split cannot be split, |
3544 | try other frames. */ | |
1ae1a37d | 3545 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3546 | { |
3547 | /* Try visible frames first. */ | |
3cbb13c8 | 3548 | window = Fget_largest_window (Qvisible, Qt); |
cee67da9 RS |
3549 | /* If that didn't work, try iconified frames. */ |
3550 | if (NILP (window)) | |
3cbb13c8 SM |
3551 | window = Fget_largest_window (make_number (0), Qt); |
3552 | #if 0 /* Don't try windows on other displays. */ | |
cee67da9 | 3553 | if (NILP (window)) |
3cbb13c8 SM |
3554 | window = Fget_largest_window (Qt, Qt); |
3555 | #endif | |
cee67da9 RS |
3556 | } |
3557 | else | |
3cbb13c8 | 3558 | window = Fget_largest_window (frames, Qt); |
cee67da9 | 3559 | |
92cca945 RS |
3560 | /* If we got a tall enough full-width window that can be split, |
3561 | split it. */ | |
265a9e55 | 3562 | if (!NILP (window) |
92cca945 | 3563 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3564 | && window_height (window) >= split_height_threshold |
111e5992 | 3565 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3566 | window = Fsplit_window (window, Qnil, Qnil); |
3567 | else | |
3568 | { | |
1942f68f RS |
3569 | Lisp_Object upper, lower, other; |
3570 | ||
3cbb13c8 | 3571 | window = Fget_lru_window (frames, Qt); |
92cca945 RS |
3572 | /* If the LRU window is selected, and big enough, |
3573 | and can be split, split it. */ | |
cee67da9 | 3574 | if (!NILP (window) |
92cca945 | 3575 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3576 | && (EQ (window, selected_window) |
3577 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3578 | && window_height (window) >= window_min_height << 1) |
3579 | window = Fsplit_window (window, Qnil, Qnil); | |
49e99345 SM |
3580 | else |
3581 | window = Fget_lru_window (frames, Qnil); | |
cee67da9 | 3582 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3583 | |
cee67da9 | 3584 | /* Try visible frames first. */ |
48d9379d RS |
3585 | if (NILP (window)) |
3586 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 | 3587 | if (NILP (window)) |
3cbb13c8 | 3588 | window = Fget_largest_window (Qvisible, Qnil); |
cee67da9 | 3589 | /* If that didn't work, try iconified frames. */ |
48d9379d RS |
3590 | if (NILP (window)) |
3591 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 | 3592 | if (NILP (window)) |
3cbb13c8 SM |
3593 | window = Fget_largest_window (make_number (0), Qnil); |
3594 | ||
3595 | #if 0 /* Don't try frames on other displays. */ | |
48d9379d RS |
3596 | if (NILP (window)) |
3597 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 | 3598 | if (NILP (window)) |
3cbb13c8 SM |
3599 | window = Fget_largest_window (Qt, Qnil); |
3600 | #endif | |
cee67da9 RS |
3601 | /* As a last resort, make a new frame. */ |
3602 | if (NILP (window)) | |
3603 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3604 | /* If window appears above or below another, |
3605 | even out their heights. */ | |
cac66e4f | 3606 | other = upper = lower = Qnil; |
1942f68f RS |
3607 | if (!NILP (XWINDOW (window)->prev)) |
3608 | other = upper = XWINDOW (window)->prev, lower = window; | |
3609 | if (!NILP (XWINDOW (window)->next)) | |
3610 | other = lower = XWINDOW (window)->next, upper = window; | |
3611 | if (!NILP (other) | |
6529ed87 | 3612 | && !NILP (Veven_window_heights) |
1942f68f | 3613 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3614 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3615 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3616 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3617 | { |
949cf20f KS |
3618 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3619 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3620 | enlarge_window (upper, |
949cf20f | 3621 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
56ebfae2 | 3622 | 0); |
1942f68f | 3623 | } |
7ab12479 JB |
3624 | } |
3625 | } | |
3626 | else | |
3cbb13c8 | 3627 | window = Fget_lru_window (Qnil, Qnil); |
7ab12479 | 3628 | |
949cf20f | 3629 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3630 | return display_buffer_1 (window); |
7ab12479 JB |
3631 | } |
3632 | ||
e661376d KS |
3633 | |
3634 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3635 | 0, 1, 0, | |
3636 | doc: /* Force redisplay of all windows. | |
3637 | If optional arg OBJECT is a window, force redisplay of that window only. | |
0cc1039f | 3638 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
e661376d KS |
3639 | displaying that buffer. */) |
3640 | (object) | |
3641 | Lisp_Object object; | |
3642 | { | |
3643 | if (NILP (object)) | |
3644 | { | |
3645 | windows_or_buffers_changed++; | |
40c6ee74 | 3646 | update_mode_lines++; |
e661376d KS |
3647 | return Qt; |
3648 | } | |
3649 | ||
3650 | if (WINDOWP (object)) | |
3651 | { | |
40c6ee74 | 3652 | struct window *w = XWINDOW (object); |
e661376d | 3653 | mark_window_display_accurate (object, 0); |
40c6ee74 KS |
3654 | w->update_mode_line = Qt; |
3655 | if (BUFFERP (w->buffer)) | |
3656 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3657 | ++update_mode_lines; | |
e661376d KS |
3658 | return Qt; |
3659 | } | |
0cc1039f | 3660 | |
e661376d KS |
3661 | if (STRINGP (object)) |
3662 | object = Fget_buffer (object); | |
3663 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3664 | { | |
3665 | /* Walk all windows looking for buffer, and force update | |
3666 | of each of those windows. */ | |
3667 | ||
3668 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3669 | return NILP (object) ? Qnil : Qt; | |
3670 | } | |
3671 | ||
3672 | /* If nothing suitable was found, just return. | |
3673 | We could signal an error, but this feature will typically be used | |
3674 | asynchronously in timers or process sentinels, so we don't. */ | |
3675 | return Qnil; | |
3676 | } | |
3677 | ||
3678 | ||
7ab12479 JB |
3679 | void |
3680 | temp_output_buffer_show (buf) | |
3681 | register Lisp_Object buf; | |
3682 | { | |
3683 | register struct buffer *old = current_buffer; | |
3684 | register Lisp_Object window; | |
3685 | register struct window *w; | |
3686 | ||
bccd3dd1 RS |
3687 | XBUFFER (buf)->directory = current_buffer->directory; |
3688 | ||
7ab12479 | 3689 | Fset_buffer (buf); |
c6367666 | 3690 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3691 | BEGV = BEG; |
3692 | ZV = Z; | |
3693 | SET_PT (BEG); | |
06be4f85 | 3694 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3695 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3696 | #endif |
7ab12479 JB |
3697 | set_buffer_internal (old); |
3698 | ||
e67a1dea | 3699 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3700 | call1 (Vtemp_buffer_show_function, buf); |
3701 | else | |
3702 | { | |
53f76081 | 3703 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3704 | |
1ae1a37d | 3705 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3706 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3707 | Vminibuf_scroll_window = window; |
3708 | w = XWINDOW (window); | |
d834a2e9 | 3709 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3710 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3711 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3712 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3713 | |
beb4e312 | 3714 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3715 | and its buffer current. */ |
2d0834cc SM |
3716 | |
3717 | if (!NILP (Vrun_hooks) | |
3718 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3719 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3720 | { |
2d0834cc SM |
3721 | int count = SPECPDL_INDEX (); |
3722 | Lisp_Object prev_window, prev_buffer; | |
3723 | prev_window = selected_window; | |
3724 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3725 | |
2d0834cc SM |
3726 | /* Select the window that was chosen, for running the hook. |
3727 | Note: Both Fselect_window and select_window_norecord may | |
3728 | set-buffer to the buffer displayed in the window, | |
3729 | so we need to save the current buffer. --stef */ | |
3730 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3731 | record_unwind_protect (select_window_norecord, prev_window); | |
3732 | Fselect_window (window, Qt); | |
3733 | Fset_buffer (w->buffer); | |
3734 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3735 | unbind_to (count, Qnil); | |
2cccc823 RS |
3736 | } |
3737 | } | |
7ab12479 JB |
3738 | } |
3739 | \f | |
dfcf069d | 3740 | static void |
7ab12479 JB |
3741 | make_dummy_parent (window) |
3742 | Lisp_Object window; | |
3743 | { | |
cffec418 | 3744 | Lisp_Object new; |
7ab12479 | 3745 | register struct window *o, *p; |
cffec418 | 3746 | int i; |
7ab12479 | 3747 | |
cffec418 | 3748 | o = XWINDOW (window); |
26605be9 | 3749 | p = allocate_window (); |
cffec418 | 3750 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3751 | ((struct Lisp_Vector *) p)->contents[i] |
3752 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3753 | XSETWINDOW (new, p); |
7ab12479 | 3754 | |
2a1893f4 SM |
3755 | ++sequence_number; |
3756 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3757 | |
3758 | /* Put new into window structure in place of window */ | |
3759 | replace_window (window, new); | |
3760 | ||
3761 | o->next = Qnil; | |
3762 | o->prev = Qnil; | |
3763 | o->vchild = Qnil; | |
3764 | o->hchild = Qnil; | |
3765 | o->parent = new; | |
3766 | ||
3767 | p->start = Qnil; | |
3768 | p->pointm = Qnil; | |
3769 | p->buffer = Qnil; | |
3770 | } | |
3771 | ||
3772 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3773 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3774 | WINDOW defaults to selected one and SIZE to half its size. | |
3775 | If optional third arg HORFLAG is non-nil, split side by side | |
3776 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 3777 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
3778 | Interactively, all arguments are nil. |
3779 | ||
3780 | Returns the newly created window (which is the lower or rightmost one). | |
3781 | The upper or leftmost window is the original one and remains selected. | |
3782 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) | |
fdb82f93 | 3783 | (window, size, horflag) |
77ae0fe3 | 3784 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3785 | { |
3786 | register Lisp_Object new; | |
3787 | register struct window *o, *p; | |
c0807608 | 3788 | FRAME_PTR fo; |
77ae0fe3 | 3789 | register int size_int; |
7ab12479 | 3790 | |
265a9e55 | 3791 | if (NILP (window)) |
7ab12479 JB |
3792 | window = selected_window; |
3793 | else | |
b7826503 | 3794 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3795 | |
3796 | o = XWINDOW (window); | |
c0807608 | 3797 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3798 | |
77ae0fe3 | 3799 | if (NILP (size)) |
7ab12479 | 3800 | { |
265a9e55 | 3801 | if (!NILP (horflag)) |
c0807608 | 3802 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3803 | the usable space in columns by two. |
3804 | We round up, since the left-hand window may include | |
3805 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3806 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3807 | else |
949cf20f | 3808 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3809 | } |
3810 | else | |
3811 | { | |
b7826503 | 3812 | CHECK_NUMBER (size); |
77ae0fe3 | 3813 | size_int = XINT (size); |
7ab12479 JB |
3814 | } |
3815 | ||
3816 | if (MINI_WINDOW_P (o)) | |
3817 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3818 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3819 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3820 | |
a481b3ea | 3821 | check_min_window_sizes (); |
7ab12479 | 3822 | |
265a9e55 | 3823 | if (NILP (horflag)) |
7ab12479 | 3824 | { |
77ae0fe3 KH |
3825 | if (size_int < window_min_height) |
3826 | error ("Window height %d too small (after splitting)", size_int); | |
949cf20f | 3827 | if (size_int + window_min_height > XFASTINT (o->total_lines)) |
37962e60 | 3828 | error ("Window height %d too small (after splitting)", |
949cf20f | 3829 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3830 | if (NILP (o->parent) |
3831 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3832 | { |
3833 | make_dummy_parent (window); | |
3834 | new = o->parent; | |
3835 | XWINDOW (new)->vchild = window; | |
3836 | } | |
3837 | } | |
3838 | else | |
3839 | { | |
77ae0fe3 KH |
3840 | if (size_int < window_min_width) |
3841 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e | 3842 | |
949cf20f | 3843 | if (size_int + window_min_width > XFASTINT (o->total_cols)) |
37962e60 | 3844 | error ("Window width %d too small (after splitting)", |
949cf20f | 3845 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3846 | if (NILP (o->parent) |
3847 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3848 | { |
3849 | make_dummy_parent (window); | |
3850 | new = o->parent; | |
3851 | XWINDOW (new)->hchild = window; | |
3852 | } | |
3853 | } | |
3854 | ||
3855 | /* Now we know that window's parent is a vertical combination | |
3856 | if we are dividing vertically, or a horizontal combination | |
3857 | if we are making side-by-side windows */ | |
3858 | ||
3859 | windows_or_buffers_changed++; | |
c0807608 | 3860 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3861 | new = make_window (); |
3862 | p = XWINDOW (new); | |
3863 | ||
44fa5b1e | 3864 | p->frame = o->frame; |
7ab12479 | 3865 | p->next = o->next; |
265a9e55 | 3866 | if (!NILP (p->next)) |
7ab12479 JB |
3867 | XWINDOW (p->next)->prev = new; |
3868 | p->prev = window; | |
3869 | o->next = new; | |
3870 | p->parent = o->parent; | |
3871 | p->buffer = Qt; | |
5500c422 GM |
3872 | p->window_end_valid = Qnil; |
3873 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3874 | |
949cf20f KS |
3875 | /* Duplicate special geometry settings. */ |
3876 | ||
3877 | p->left_margin_cols = o->left_margin_cols; | |
3878 | p->right_margin_cols = o->right_margin_cols; | |
3879 | p->left_fringe_width = o->left_fringe_width; | |
3880 | p->right_fringe_width = o->right_fringe_width; | |
3881 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3882 | p->scroll_bar_width = o->scroll_bar_width; | |
3883 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3884 | ||
44fa5b1e | 3885 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3886 | |
265a9e55 | 3887 | if (!NILP (horflag)) |
7ab12479 | 3888 | { |
949cf20f KS |
3889 | p->total_lines = o->total_lines; |
3890 | p->top_line = o->top_line; | |
3891 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3892 | XSETFASTINT (o->total_cols, size_int); | |
3893 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3894 | adjust_window_margins (p); | |
3895 | adjust_window_margins (o); | |
7ab12479 JB |
3896 | } |
3897 | else | |
3898 | { | |
949cf20f KS |
3899 | p->left_col = o->left_col; |
3900 | p->total_cols = o->total_cols; | |
3901 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3902 | XSETFASTINT (o->total_lines, size_int); | |
3903 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3904 | } |
3905 | ||
5500c422 GM |
3906 | /* Adjust glyph matrices. */ |
3907 | adjust_glyphs (fo); | |
949cf20f KS |
3908 | |
3909 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3910 | return new; |
3911 | } | |
3912 | \f | |
56ebfae2 | 3913 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
fdb82f93 PJ |
3914 | doc: /* Make current window ARG lines bigger. |
3915 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 | 3916 | Interactively, if an argument is not given, make the window one line bigger. |
5afc696a | 3917 | If HORIZONTAL is non-nil, enlarge horizontally instead of vertically. |
56ebfae2 RS |
3918 | This function can delete windows, even the second window, if they get |
3919 | too small. */) | |
3920 | (arg, horizontal) | |
3921 | Lisp_Object arg, horizontal; | |
7ab12479 | 3922 | { |
b7826503 | 3923 | CHECK_NUMBER (arg); |
56ebfae2 | 3924 | enlarge_window (selected_window, XINT (arg), !NILP (horizontal)); |
543f5fb1 RS |
3925 | |
3926 | if (! NILP (Vwindow_configuration_change_hook)) | |
3927 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3928 | ||
7ab12479 JB |
3929 | return Qnil; |
3930 | } | |
3931 | ||
56ebfae2 | 3932 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
fdb82f93 PJ |
3933 | doc: /* Make current window ARG lines smaller. |
3934 | From program, optional second arg non-nil means shrink sideways arg columns. | |
56ebfae2 | 3935 | Interactively, if an argument is not given, make the window one line smaller. Only |
a5731348 | 3936 | siblings to the right or below are changed. */) |
56ebfae2 RS |
3937 | (arg, side) |
3938 | Lisp_Object arg, side; | |
7ab12479 | 3939 | { |
b7826503 | 3940 | CHECK_NUMBER (arg); |
56ebfae2 | 3941 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3942 | |
3943 | if (! NILP (Vwindow_configuration_change_hook)) | |
3944 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3945 | ||
7ab12479 JB |
3946 | return Qnil; |
3947 | } | |
3948 | ||
3949 | int | |
3950 | window_height (window) | |
3951 | Lisp_Object window; | |
3952 | { | |
3953 | register struct window *p = XWINDOW (window); | |
949cf20f | 3954 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3955 | } |
3956 | ||
3957 | int | |
3958 | window_width (window) | |
3959 | Lisp_Object window; | |
3960 | { | |
3961 | register struct window *p = XWINDOW (window); | |
949cf20f | 3962 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3963 | } |
3964 | ||
177c0ea7 | 3965 | |
7ab12479 | 3966 | #define CURBEG(w) \ |
5afc696a | 3967 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3968 | |
3969 | #define CURSIZE(w) \ | |
5afc696a RS |
3970 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
3971 | ||
7ab12479 | 3972 | |
5afc696a RS |
3973 | /* Enlarge WINDOW by DELTA. |
3974 | HORIZ_FLAG nonzero means enlarge it horizontally; | |
3975 | zero means do it vertically. | |
233a4a2c | 3976 | |
5afc696a RS |
3977 | Siblings of the selected window are resized to fulfill the size |
3978 | request. If they become too small in the process, they will be | |
56ebfae2 | 3979 | deleted. */ |
7ab12479 | 3980 | |
f984d4fc | 3981 | static void |
56ebfae2 | 3982 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 3983 | Lisp_Object window; |
56ebfae2 | 3984 | int delta, horiz_flag; |
7ab12479 | 3985 | { |
86c8e823 | 3986 | Lisp_Object parent, next, prev; |
233a4a2c | 3987 | struct window *p; |
3578db3c KR |
3988 | Lisp_Object *sizep; |
3989 | int maximum; | |
5e14b1fc | 3990 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 3991 | = horiz_flag ? window_width : window_height; |
233a4a2c | 3992 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 3993 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 3994 | |
233a4a2c GM |
3995 | /* Check values of window_min_width and window_min_height for |
3996 | validity. */ | |
a481b3ea | 3997 | check_min_window_sizes (); |
7ab12479 | 3998 | |
233a4a2c | 3999 | /* Give up if this window cannot be resized. */ |
5afc696a | 4000 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4001 | error ("Window is not resizable"); |
4002 | ||
4003 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4004 | while (1) |
4005 | { | |
4006 | p = XWINDOW (window); | |
4007 | parent = p->parent; | |
177c0ea7 | 4008 | |
265a9e55 | 4009 | if (NILP (parent)) |
7ab12479 | 4010 | { |
5afc696a | 4011 | if (horiz_flag) |
7ab12479 JB |
4012 | error ("No other window to side of this one"); |
4013 | break; | |
4014 | } | |
177c0ea7 | 4015 | |
5afc696a | 4016 | if (horiz_flag |
233a4a2c | 4017 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4018 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4019 | break; |
177c0ea7 | 4020 | |
7ab12479 JB |
4021 | window = parent; |
4022 | } | |
4023 | ||
05c2896a | 4024 | sizep = &CURSIZE (window); |
7ab12479 | 4025 | |
7ab12479 JB |
4026 | { |
4027 | register int maxdelta; | |
7ab12479 | 4028 | |
f95284d2 RS |
4029 | /* Compute the maximum size increment this window can have. */ |
4030 | ||
56ebfae2 RS |
4031 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4032 | /* This is a main window followed by a minibuffer. */ | |
4033 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4034 | - window_min_size (XWINDOW (p->next), | |
4035 | horiz_flag, 0, 0)) | |
4036 | /* This is a minibuffer following a main window. */ | |
4037 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4038 | - window_min_size (XWINDOW (p->prev), | |
4039 | horiz_flag, 0, 0)) | |
4040 | /* This is a frame with only one window, a minibuffer-only | |
4041 | or a minibufferless frame. */ | |
4042 | : (delta = 0)); | |
7ab12479 JB |
4043 | |
4044 | if (delta > maxdelta) | |
4045 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4046 | the full frame, or make the only window aside from the |
4047 | minibuffer the full frame. */ | |
7ab12479 | 4048 | delta = maxdelta; |
6b54027b | 4049 | } |
d5783c40 | 4050 | |
5afc696a | 4051 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), horiz_flag, 0, 0)) |
6b54027b | 4052 | { |
543f5fb1 | 4053 | delete_window (window); |
d5783c40 | 4054 | return; |
6b54027b RS |
4055 | } |
4056 | ||
4057 | if (delta == 0) | |
4058 | return; | |
7ab12479 | 4059 | |
f95284d2 | 4060 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
4061 | maximum = 0; |
4062 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 4063 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
5afc696a | 4064 | horiz_flag, 0, 0); |
56ebfae2 RS |
4065 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
4066 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
4067 | horiz_flag, 0, 0); | |
db98a733 | 4068 | |
f95284d2 | 4069 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4070 | if (delta <= maximum) |
7ab12479 | 4071 | { |
db98a733 RS |
4072 | Lisp_Object first_unaffected; |
4073 | Lisp_Object first_affected; | |
233a4a2c | 4074 | int fixed_p; |
db98a733 RS |
4075 | |
4076 | next = p->next; | |
4077 | prev = p->prev; | |
4078 | first_affected = window; | |
4079 | /* Look at one sibling at a time, | |
4080 | moving away from this window in both directions alternately, | |
4081 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4082 | while (delta != 0 |
56ebfae2 | 4083 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4084 | { |
db98a733 RS |
4085 | if (! NILP (next)) |
4086 | { | |
c1636aa6 | 4087 | int this_one = ((*sizefun) (next) |
233a4a2c | 4088 | - window_min_size (XWINDOW (next), |
5afc696a | 4089 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4090 | if (!fixed_p) |
4091 | { | |
4092 | if (this_one > delta) | |
4093 | this_one = delta; | |
177c0ea7 | 4094 | |
233a4a2c | 4095 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4096 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4097 | |
233a4a2c GM |
4098 | delta -= this_one; |
4099 | } | |
177c0ea7 | 4100 | |
db98a733 RS |
4101 | next = XWINDOW (next)->next; |
4102 | } | |
177c0ea7 | 4103 | |
db98a733 RS |
4104 | if (delta == 0) |
4105 | break; | |
177c0ea7 | 4106 | |
56ebfae2 | 4107 | if (! NILP (prev)) |
db98a733 | 4108 | { |
c1636aa6 | 4109 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4110 | - window_min_size (XWINDOW (prev), |
5afc696a | 4111 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4112 | if (!fixed_p) |
4113 | { | |
4114 | if (this_one > delta) | |
4115 | this_one = delta; | |
177c0ea7 | 4116 | |
233a4a2c | 4117 | first_affected = prev; |
177c0ea7 | 4118 | |
233a4a2c | 4119 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4120 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4121 | |
4122 | delta -= this_one; | |
4123 | } | |
177c0ea7 | 4124 | |
db98a733 RS |
4125 | prev = XWINDOW (prev)->prev; |
4126 | } | |
4127 | } | |
4128 | ||
233a4a2c GM |
4129 | xassert (delta == 0); |
4130 | ||
db98a733 RS |
4131 | /* Now recalculate the edge positions of all the windows affected, |
4132 | based on the new sizes. */ | |
4133 | first_unaffected = next; | |
4134 | prev = first_affected; | |
4135 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4136 | prev = next, next = XWINDOW (next)->next) | |
4137 | { | |
3578db3c | 4138 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4139 | /* This does not change size of NEXT, |
4140 | but it propagates the new top edge to its children */ | |
4141 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4142 | } | |
7ab12479 JB |
4143 | } |
4144 | else | |
4145 | { | |
4146 | register int delta1; | |
4147 | register int opht = (*sizefun) (parent); | |
4148 | ||
3578db3c | 4149 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4150 | { |
4151 | /* If trying to grow this window to or beyond size of the parent, | |
4152 | just delete all the sibling windows. */ | |
dc1ab1ee | 4153 | Lisp_Object start, tem, next; |
daf516d3 | 4154 | |
dc1ab1ee RS |
4155 | start = XWINDOW (parent)->vchild; |
4156 | if (NILP (start)) | |
4157 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4158 | |
dc1ab1ee RS |
4159 | /* Delete any siblings that come after WINDOW. */ |
4160 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4161 | while (! NILP (tem)) |
4162 | { | |
4163 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4164 | delete_window (tem); |
4165 | tem = next; | |
4166 | } | |
4167 | ||
4168 | /* Delete any siblings that come after WINDOW. | |
4169 | Note that if START is not WINDOW, then WINDOW still | |
4170 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4171 | tem = start; | |
4172 | while (! EQ (tem, window)) | |
4173 | { | |
4174 | next = XWINDOW (tem)->next; | |
4175 | delete_window (tem); | |
daf516d3 RS |
4176 | tem = next; |
4177 | } | |
4178 | } | |
7ab12479 | 4179 | else |
233a4a2c GM |
4180 | { |
4181 | /* Otherwise, make delta1 just right so that if we add | |
4182 | delta1 lines to this window and to the parent, and then | |
4183 | shrink the parent back to its original size, the new | |
4184 | proportional size of this window will increase by delta. | |
4185 | ||
4186 | The function size_window will compute the new height h' | |
4187 | of the window from delta1 as: | |
177c0ea7 | 4188 | |
233a4a2c GM |
4189 | e = delta1/n |
4190 | x = delta1 - delta1/n * n for the 1st resizable child | |
4191 | h' = h + e + x | |
4192 | ||
4193 | where n is the number of children that can be resized. | |
4194 | We can ignore x by choosing a delta1 that is a multiple of | |
4195 | n. We want the height of this window to come out as | |
177c0ea7 | 4196 | |
233a4a2c GM |
4197 | h' = h + delta |
4198 | ||
4199 | So, delta1 must be | |
177c0ea7 | 4200 | |
233a4a2c GM |
4201 | h + e = h + delta |
4202 | delta1/n = delta | |
4203 | delta1 = n * delta. | |
4204 | ||
a5731348 | 4205 | The number of children n equals the number of resizable |
233a4a2c | 4206 | children of this window + 1 because we know window itself |
6e0dca3d | 4207 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4208 | |
4209 | struct window *w = XWINDOW (window); | |
4210 | Lisp_Object s; | |
4211 | int n = 1; | |
4212 | ||
4213 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
5afc696a | 4214 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4215 | ++n; |
4216 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
5afc696a | 4217 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4218 | ++n; |
4219 | ||
4220 | delta1 = n * delta; | |
7ab12479 | 4221 | |
daf516d3 RS |
4222 | /* Add delta1 lines or columns to this window, and to the parent, |
4223 | keeping things consistent while not affecting siblings. */ | |
4224 | XSETINT (CURSIZE (parent), opht + delta1); | |
4225 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4226 | ||
4227 | /* Squeeze out delta1 lines or columns from our parent, | |
4228 | shriking this window and siblings proportionately. | |
4229 | This brings parent back to correct size. | |
4230 | Delta1 was calculated so this makes this window the desired size, | |
4231 | taking it all out of the siblings. */ | |
4232 | (*setsizefun) (parent, opht, 0); | |
4233 | ||
4234 | } | |
7ab12479 JB |
4235 | } |
4236 | ||
d834a2e9 | 4237 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4238 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4239 | |
4240 | /* Adjust glyph matrices. */ | |
4241 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4242 | } |
c1636aa6 | 4243 | |
0d384044 RS |
4244 | |
4245 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4246 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4247 | zero means adjust the height, moving the bottom edge. | |
4248 | ||
4249 | Following siblings of the selected window are resized to fulfill | |
4250 | the size request. If they become too small in the process, they | |
4251 | are not deleted; instead, we signal an error. */ | |
4252 | ||
4253 | static void | |
4254 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4255 | Lisp_Object window; | |
4256 | int delta, horiz_flag; | |
4257 | { | |
4258 | Lisp_Object parent, child; | |
4259 | struct window *p; | |
4260 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4261 | int delcount = window_deletion_count; | |
4262 | ||
4263 | /* Check values of window_min_width and window_min_height for | |
4264 | validity. */ | |
4265 | check_min_window_sizes (); | |
4266 | ||
4267 | if (NILP (window)) | |
4268 | window = Fselected_window (); | |
4269 | ||
4270 | CHECK_WINDOW (window); | |
4271 | ||
4272 | /* Give up if this window cannot be resized. */ | |
4273 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4274 | error ("Window is not resizable"); | |
4275 | ||
4276 | while (1) | |
4277 | { | |
bd99e242 RS |
4278 | Lisp_Object first_parallel = Qnil; |
4279 | ||
0d384044 RS |
4280 | p = XWINDOW (window); |
4281 | parent = p->parent; | |
4282 | ||
bd99e242 | 4283 | if (NILP (XWINDOW (window)->next)) |
0d384044 RS |
4284 | { |
4285 | Fset_window_configuration (old_config); | |
4286 | error ("No other window following this one"); | |
4287 | } | |
4288 | ||
bd99e242 RS |
4289 | /* See if this level has windows in parallel in the specified |
4290 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4291 | if (horiz_flag) | |
4292 | { | |
4293 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4294 | first_parallel = XWINDOW (parent)->vchild; | |
4295 | } | |
4296 | else | |
4297 | { | |
4298 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4299 | first_parallel = XWINDOW (parent)->hchild; | |
4300 | } | |
4301 | ||
0d384044 RS |
4302 | /* Don't make this window too small. */ |
4303 | if (XINT (CURSIZE (window)) + delta | |
4304 | < (horiz_flag ? window_min_width : window_min_height)) | |
4305 | { | |
4306 | Fset_window_configuration (old_config); | |
4307 | error ("Cannot adjust window size as specified"); | |
4308 | } | |
4309 | ||
4310 | /* Clear out some redisplay caches. */ | |
4311 | XSETFASTINT (p->last_modified, 0); | |
4312 | XSETFASTINT (p->last_overlay_modified, 0); | |
4313 | ||
4314 | /* Adjust this window's edge. */ | |
4315 | XSETINT (CURSIZE (window), | |
4316 | XINT (CURSIZE (window)) + delta); | |
4317 | ||
4318 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4319 | make them smaller, and exit the loop. |
4320 | ||
0d384044 RS |
4321 | (If we reach the top of the tree and can never do this, |
4322 | we will fail and report an error, above.) */ | |
bd99e242 | 4323 | if (NILP (first_parallel)) |
0d384044 RS |
4324 | { |
4325 | if (!NILP (XWINDOW (window)->next)) | |
4326 | { | |
e99c7521 JD |
4327 | /* This may happen for the minibuffer. In that case |
4328 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4329 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4330 | { |
4331 | Fset_window_configuration (old_config); | |
4332 | error ("Cannot adjust window size as specified"); | |
4333 | } | |
4334 | ||
0d384044 RS |
4335 | XSETINT (CURBEG (p->next), |
4336 | XINT (CURBEG (p->next)) + delta); | |
4337 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
4338 | horiz_flag, 0); | |
4339 | break; | |
4340 | } | |
4341 | } | |
4342 | else | |
4343 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4344 | Change the size of the other siblings. */ | |
bd99e242 | 4345 | for (child = first_parallel; |
0d384044 RS |
4346 | ! NILP (child); |
4347 | child = XWINDOW (child)->next) | |
4348 | if (! EQ (child, window)) | |
4349 | size_window (child, XINT (CURSIZE (child)) + delta, | |
4350 | horiz_flag, 0); | |
4351 | ||
4352 | window = parent; | |
4353 | } | |
4354 | ||
4355 | /* If we made a window so small it got deleted, | |
4356 | we failed. Report failure. */ | |
4357 | if (delcount != window_deletion_count) | |
4358 | { | |
4359 | Fset_window_configuration (old_config); | |
4360 | error ("Cannot adjust window size as specified"); | |
4361 | } | |
4362 | ||
4363 | /* Adjust glyph matrices. */ | |
4364 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4365 | } | |
4366 | ||
7ab12479 JB |
4367 | #undef CURBEG |
4368 | #undef CURSIZE | |
4369 | ||
0d384044 RS |
4370 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4371 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4372 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4373 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4374 | Otherwise, adjust the height, moving the bottom edge. |
4375 | ||
4376 | Following siblings of the selected window are resized to fulfill | |
4377 | the size request. If they become too small in the process, they | |
4378 | are not deleted; instead, we signal an error. */) | |
4379 | (window, delta, horizontal) | |
4380 | Lisp_Object window, delta, horizontal; | |
4381 | { | |
4382 | CHECK_NUMBER (delta); | |
4383 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); | |
4384 | ||
4385 | if (! NILP (Vwindow_configuration_change_hook)) | |
4386 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4387 | ||
4388 | return Qnil; | |
4389 | } | |
4390 | ||
5500c422 | 4391 | |
f984d4fc GM |
4392 | \f |
4393 | /*********************************************************************** | |
4394 | Resizing Mini-Windows | |
4395 | ***********************************************************************/ | |
4396 | ||
4397 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4398 | |
43b4a21f GM |
4399 | enum save_restore_action |
4400 | { | |
4401 | CHECK_ORIG_SIZES, | |
4402 | SAVE_ORIG_SIZES, | |
4403 | RESTORE_ORIG_SIZES | |
4404 | }; | |
4405 | ||
177c0ea7 | 4406 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4407 | enum save_restore_action)); |
f984d4fc GM |
4408 | |
4409 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4410 | from lowest windows first. */ | |
4411 | ||
4412 | static void | |
4413 | shrink_window_lowest_first (w, height) | |
4414 | struct window *w; | |
4415 | int height; | |
4416 | { | |
4417 | struct window *c; | |
4418 | Lisp_Object child; | |
4419 | int old_height; | |
4420 | ||
4421 | xassert (!MINI_WINDOW_P (w)); | |
4422 | ||
4423 | /* Set redisplay hints. */ | |
4424 | XSETFASTINT (w->last_modified, 0); | |
4425 | XSETFASTINT (w->last_overlay_modified, 0); | |
4426 | windows_or_buffers_changed++; | |
4427 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4428 | ||
949cf20f KS |
4429 | old_height = XFASTINT (w->total_lines); |
4430 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4431 | |
4432 | if (!NILP (w->hchild)) | |
4433 | { | |
4434 | for (child = w->hchild; !NILP (child); child = c->next) | |
4435 | { | |
4436 | c = XWINDOW (child); | |
949cf20f | 4437 | c->top_line = w->top_line; |
f984d4fc GM |
4438 | shrink_window_lowest_first (c, height); |
4439 | } | |
4440 | } | |
4441 | else if (!NILP (w->vchild)) | |
4442 | { | |
4443 | Lisp_Object last_child; | |
4444 | int delta = old_height - height; | |
4445 | int last_top; | |
6bbd7a29 GM |
4446 | |
4447 | last_child = Qnil; | |
177c0ea7 | 4448 | |
f984d4fc GM |
4449 | /* Find the last child. We are taking space from lowest windows |
4450 | first, so we iterate over children from the last child | |
4451 | backwards. */ | |
4452 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
4453 | last_child = child; | |
4454 | ||
4455 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4456 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4457 | { | |
4458 | int this_one; | |
177c0ea7 | 4459 | |
f984d4fc | 4460 | c = XWINDOW (child); |
949cf20f | 4461 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4462 | |
4463 | if (this_one > delta) | |
4464 | this_one = delta; | |
4465 | ||
949cf20f | 4466 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4467 | delta -= this_one; |
4468 | } | |
4469 | ||
4470 | /* Compute new positions. */ | |
949cf20f | 4471 | last_top = XINT (w->top_line); |
f984d4fc GM |
4472 | for (child = w->vchild; !NILP (child); child = c->next) |
4473 | { | |
4474 | c = XWINDOW (child); | |
949cf20f KS |
4475 | c->top_line = make_number (last_top); |
4476 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4477 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4478 | } |
4479 | } | |
4480 | } | |
4481 | ||
4482 | ||
43b4a21f GM |
4483 | /* Save, restore, or check positions and sizes in the window tree |
4484 | rooted at W. ACTION says what to do. | |
f984d4fc | 4485 | |
949cf20f KS |
4486 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4487 | orig_total_lines members are valid for all windows in the window | |
4488 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4489 | |
43b4a21f | 4490 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4491 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4492 | |
949cf20f KS |
4493 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4494 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4495 | |
4496 | static int | |
4497 | save_restore_orig_size (w, action) | |
f984d4fc | 4498 | struct window *w; |
43b4a21f | 4499 | enum save_restore_action action; |
f984d4fc | 4500 | { |
43b4a21f GM |
4501 | int success_p = 1; |
4502 | ||
f984d4fc GM |
4503 | while (w) |
4504 | { | |
4505 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4506 | { |
4507 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4508 | success_p = 0; | |
4509 | } | |
f984d4fc | 4510 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4511 | { |
4512 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4513 | success_p = 0; | |
4514 | } | |
177c0ea7 | 4515 | |
43b4a21f | 4516 | switch (action) |
f984d4fc | 4517 | { |
43b4a21f | 4518 | case CHECK_ORIG_SIZES: |
949cf20f | 4519 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4520 | return 0; |
4521 | break; | |
4522 | ||
4523 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4524 | w->orig_top_line = w->top_line; |
4525 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4526 | XSETFASTINT (w->last_modified, 0); |
4527 | XSETFASTINT (w->last_overlay_modified, 0); | |
4528 | break; | |
4529 | ||
4530 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4531 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4532 | w->top_line = w->orig_top_line; | |
4533 | w->total_lines = w->orig_total_lines; | |
4534 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4535 | XSETFASTINT (w->last_modified, 0); |
4536 | XSETFASTINT (w->last_overlay_modified, 0); | |
4537 | break; | |
4538 | ||
4539 | default: | |
4540 | abort (); | |
f984d4fc | 4541 | } |
43b4a21f | 4542 | |
f984d4fc GM |
4543 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4544 | } | |
43b4a21f GM |
4545 | |
4546 | return success_p; | |
f984d4fc GM |
4547 | } |
4548 | ||
4549 | ||
4550 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4551 | without deleting other windows. */ | |
4552 | ||
4553 | void | |
4554 | grow_mini_window (w, delta) | |
4555 | struct window *w; | |
4556 | int delta; | |
4557 | { | |
4558 | struct frame *f = XFRAME (w->frame); | |
4559 | struct window *root; | |
177c0ea7 | 4560 | |
f984d4fc GM |
4561 | xassert (MINI_WINDOW_P (w)); |
4562 | xassert (delta >= 0); | |
177c0ea7 | 4563 | |
f984d4fc GM |
4564 | /* Check values of window_min_width and window_min_height for |
4565 | validity. */ | |
4566 | check_min_window_sizes (); | |
4567 | ||
4568 | /* Compute how much we can enlarge the mini-window without deleting | |
4569 | other windows. */ | |
4570 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4571 | if (delta) | |
4572 | { | |
4573 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4574 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4575 | /* Note that the root window may already be smaller than |
eafa3196 | 4576 | min_height. */ |
949cf20f | 4577 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4578 | } |
177c0ea7 | 4579 | |
f984d4fc GM |
4580 | if (delta) |
4581 | { | |
4582 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4583 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4584 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4585 | |
4586 | /* Shrink other windows. */ | |
949cf20f | 4587 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4588 | |
4589 | /* Grow the mini-window. */ | |
949cf20f KS |
4590 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4591 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4592 | XSETFASTINT (w->last_modified, 0); |
4593 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4594 | |
f984d4fc GM |
4595 | adjust_glyphs (f); |
4596 | } | |
4597 | } | |
4598 | ||
4599 | ||
86c8e823 GM |
4600 | /* Shrink mini-window W. If there is recorded info about window sizes |
4601 | before a call to grow_mini_window, restore recorded window sizes. | |
4602 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4603 | line. */ | |
f984d4fc GM |
4604 | |
4605 | void | |
4606 | shrink_mini_window (w) | |
4607 | struct window *w; | |
4608 | { | |
4609 | struct frame *f = XFRAME (w->frame); | |
4610 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4611 | ||
43b4a21f | 4612 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4613 | { |
43b4a21f | 4614 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4615 | adjust_glyphs (f); |
4616 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4617 | windows_or_buffers_changed = 1; | |
4618 | } | |
949cf20f | 4619 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4620 | { |
0130fe1a GM |
4621 | /* Distribute the additional lines of the mini-window |
4622 | among the other windows. */ | |
86c8e823 GM |
4623 | Lisp_Object window; |
4624 | XSETWINDOW (window, w); | |
56ebfae2 | 4625 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4626 | } |
f984d4fc GM |
4627 | } |
4628 | ||
4629 | ||
4630 | \f | |
5500c422 GM |
4631 | /* Mark window cursors off for all windows in the window tree rooted |
4632 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4633 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4634 | the frame are cleared. */ | |
4635 | ||
4636 | void | |
4637 | mark_window_cursors_off (w) | |
4638 | struct window *w; | |
4639 | { | |
4640 | while (w) | |
4641 | { | |
4642 | if (!NILP (w->hchild)) | |
4643 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4644 | else if (!NILP (w->vchild)) | |
4645 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4646 | else | |
4647 | w->phys_cursor_on_p = 0; | |
4648 | ||
4649 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4650 | } | |
4651 | } | |
4652 | ||
4653 | ||
e9c195b1 | 4654 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4655 | |
4656 | int | |
4657 | window_internal_height (w) | |
4658 | struct window *w; | |
4659 | { | |
949cf20f | 4660 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4661 | |
e9c195b1 GM |
4662 | if (!MINI_WINDOW_P (w)) |
4663 | { | |
4664 | if (!NILP (w->parent) | |
4665 | || !NILP (w->vchild) | |
4666 | || !NILP (w->hchild) | |
4667 | || !NILP (w->next) | |
4668 | || !NILP (w->prev) | |
4669 | || WINDOW_WANTS_MODELINE_P (w)) | |
4670 | --ht; | |
7ab12479 | 4671 | |
e9c195b1 GM |
4672 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4673 | --ht; | |
4674 | } | |
7ab12479 JB |
4675 | |
4676 | return ht; | |
4677 | } | |
4678 | ||
535e0b8e JB |
4679 | |
4680 | /* Return the number of columns in W. | |
a3c87d4e | 4681 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4682 | separating W from the sibling to its right. */ |
5500c422 | 4683 | |
535e0b8e | 4684 | int |
949cf20f | 4685 | window_box_text_cols (w) |
535e0b8e JB |
4686 | struct window *w; |
4687 | { | |
5500c422 | 4688 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4689 | int width = XINT (w->total_cols); |
535e0b8e | 4690 | |
949cf20f | 4691 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4692 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4693 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4694 | else if (!FRAME_WINDOW_P (f) | |
4695 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4696 | /* The column of `|' characters separating side-by-side windows |
4697 | occupies one column only. */ | |
4698 | width -= 1; | |
4699 | ||
5500c422 | 4700 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4701 | /* On window-systems, fringes and display margins cannot be |
4702 | used for normal text. */ | |
4703 | width -= (WINDOW_FRINGE_COLS (w) | |
4704 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4705 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4706 | |
4707 | return width; | |
535e0b8e JB |
4708 | } |
4709 | ||
5500c422 GM |
4710 | \f |
4711 | /************************************************************************ | |
4712 | Window Scrolling | |
4713 | ***********************************************************************/ | |
535e0b8e | 4714 | |
5500c422 | 4715 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4716 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4717 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4718 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4719 | means don't signal an error if we try to move over BEGV or ZV, | |
4720 | respectively. */ | |
7ab12479 | 4721 | |
101d1605 RS |
4722 | static void |
4723 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4724 | Lisp_Object window; |
4725 | int n; | |
101d1605 | 4726 | int whole; |
f8026fd8 | 4727 | int noerror; |
5500c422 | 4728 | { |
cba59f77 RS |
4729 | immediate_quit = 1; |
4730 | ||
5500c422 GM |
4731 | /* If we must, use the pixel-based version which is much slower than |
4732 | the line-based one but can handle varying line heights. */ | |
4733 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4734 | window_scroll_pixel_based (window, n, whole, noerror); | |
4735 | else | |
4736 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4737 | |
4738 | immediate_quit = 0; | |
5500c422 GM |
4739 | } |
4740 | ||
4741 | ||
4742 | /* Implementation of window_scroll that works based on pixel line | |
4743 | heights. See the comment of window_scroll for parameter | |
4744 | descriptions. */ | |
4745 | ||
4746 | static void | |
4747 | window_scroll_pixel_based (window, n, whole, noerror) | |
4748 | Lisp_Object window; | |
4749 | int n; | |
4750 | int whole; | |
4751 | int noerror; | |
4752 | { | |
4753 | struct it it; | |
4754 | struct window *w = XWINDOW (window); | |
4755 | struct text_pos start; | |
4756 | Lisp_Object tem; | |
4757 | int this_scroll_margin; | |
5cdb3cf3 MB |
4758 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4759 | int vscrolled = 0; | |
5500c422 GM |
4760 | |
4761 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4762 | |
5500c422 | 4763 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4764 | the screen. Allow PT to be partially visible, otherwise |
4765 | something like (scroll-down 1) with PT in the line before | |
4766 | the partially visible one would recenter. */ | |
4767 | tem = Fpos_visible_in_window_p (make_number (PT), window, Qt); | |
5500c422 GM |
4768 | if (NILP (tem)) |
4769 | { | |
4770 | /* Move backward half the height of the window. Performance note: | |
4771 | vmotion used here is about 10% faster, but would give wrong | |
4772 | results for variable height lines. */ | |
4773 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4774 | it.current_y = it.last_visible_y; | |
f204989e | 4775 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4776 | |
5500c422 GM |
4777 | /* The function move_iterator_vertically may move over more than |
4778 | the specified y-distance. If it->w is small, e.g. a | |
4779 | mini-buffer window, we may end up in front of the window's | |
4780 | display area. This is the case when Start displaying at the | |
4781 | start of the line containing PT in this case. */ | |
4782 | if (it.current_y <= 0) | |
4783 | { | |
4784 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4785 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4786 | it.current_y = 0; |
4787 | } | |
4788 | ||
4789 | start = it.current.pos; | |
4790 | } | |
e56263e5 KS |
4791 | else if (auto_window_vscroll_p) |
4792 | { | |
5b1ba1e3 | 4793 | if (tem = XCAR (XCDR (XCDR (tem))), CONSP (tem)) |
e56263e5 KS |
4794 | { |
4795 | int px; | |
4796 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4797 | if (whole) | |
e856c216 KS |
4798 | dy = max ((window_box_height (w) |
4799 | - next_screen_context_lines * dy), | |
4800 | dy); | |
e56263e5 KS |
4801 | dy *= n; |
4802 | ||
5b1ba1e3 | 4803 | if (n < 0 && (px = XINT (XCAR (tem))) > 0) |
e56263e5 KS |
4804 | { |
4805 | px = max (0, -w->vscroll - min (px, -dy)); | |
4806 | Fset_window_vscroll (window, make_number (px), Qt); | |
4807 | return; | |
4808 | } | |
5b1ba1e3 | 4809 | if (n > 0 && (px = XINT (XCDR (tem))) > 0) |
e56263e5 KS |
4810 | { |
4811 | px = max (0, -w->vscroll + min (px, dy)); | |
4812 | Fset_window_vscroll (window, make_number (px), Qt); | |
4813 | return; | |
4814 | } | |
4815 | } | |
4816 | Fset_window_vscroll (window, make_number (0), Qt); | |
4817 | } | |
5500c422 | 4818 | |
d0c38d63 | 4819 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4820 | point in the same window line as it is now, so get that line. */ |
4821 | if (!NILP (Vscroll_preserve_screen_position)) | |
4822 | { | |
c525d842 CY |
4823 | /* We preserve the goal pixel coordinate across consecutive |
4824 | calls to scroll-up or scroll-down. This avoids the | |
4825 | possibility of point becoming "stuck" on a tall line when | |
4826 | scrolling by one line. */ | |
66fe93d1 | 4827 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
4828 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
4829 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
4830 | { |
4831 | start_display (&it, w, start); | |
4832 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4833 | window_scroll_pixel_based_preserve_y = it.current_y; |
c525d842 | 4834 | } |
5500c422 GM |
4835 | } |
4836 | else | |
66fe93d1 | 4837 | window_scroll_pixel_based_preserve_y = -1; |
5500c422 GM |
4838 | |
4839 | /* Move iterator it from start the specified distance forward or | |
4840 | backward. The result is the new window start. */ | |
4841 | start_display (&it, w, start); | |
4842 | if (whole) | |
4843 | { | |
e856c216 KS |
4844 | int start_pos = IT_CHARPOS (it); |
4845 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4846 | dy = max ((window_box_height (w) | |
4847 | - next_screen_context_lines * dy), | |
4848 | dy) * n; | |
d72340d4 GM |
4849 | |
4850 | /* Note that move_it_vertically always moves the iterator to the | |
4851 | start of a line. So, if the last line doesn't have a newline, | |
4852 | we would end up at the start of the line ending at ZV. */ | |
4853 | if (dy <= 0) | |
e856c216 KS |
4854 | { |
4855 | move_it_vertically_backward (&it, -dy); | |
4856 | /* Ensure we actually does move, e.g. in case we are currently | |
4857 | looking at an image that is taller that the window height. */ | |
4858 | while (start_pos == IT_CHARPOS (it) | |
4859 | && start_pos > BEGV) | |
4860 | move_it_by_lines (&it, -1, 1); | |
4861 | } | |
d72340d4 | 4862 | else if (dy > 0) |
bed83ee4 | 4863 | { |
bed83ee4 KS |
4864 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4865 | MOVE_TO_POS | MOVE_TO_Y); | |
4866 | /* Ensure we actually does move, e.g. in case we are currently | |
4867 | looking at an image that is taller that the window height. */ | |
4868 | while (start_pos == IT_CHARPOS (it) | |
4869 | && start_pos < ZV) | |
4870 | move_it_by_lines (&it, 1, 1); | |
4871 | } | |
5500c422 GM |
4872 | } |
4873 | else | |
4874 | move_it_by_lines (&it, n, 1); | |
4875 | ||
96ae58c8 RS |
4876 | /* We failed if we find ZV is already on the screen (scrolling up, |
4877 | means there's nothing past the end), or if we can't start any | |
4878 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4879 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4880 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4881 | { |
5cdb3cf3 MB |
4882 | if (IT_CHARPOS (it) == ZV) |
4883 | { | |
07ce8b53 RS |
4884 | if (it.current_y < it.last_visible_y |
4885 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4886 | > it.last_visible_y)) |
a74eca50 GM |
4887 | { |
4888 | /* The last line was only partially visible, make it fully | |
4889 | visible. */ | |
4890 | w->vscroll = (it.last_visible_y | |
4891 | - it.current_y + it.max_ascent + it.max_descent); | |
4892 | adjust_glyphs (it.f); | |
4893 | } | |
5cdb3cf3 MB |
4894 | else if (noerror) |
4895 | return; | |
4896 | else | |
4897 | Fsignal (Qend_of_buffer, Qnil); | |
4898 | } | |
5500c422 | 4899 | else |
5cdb3cf3 MB |
4900 | { |
4901 | if (w->vscroll != 0) | |
4902 | /* The first line was only partially visible, make it fully | |
4903 | visible. */ | |
4904 | w->vscroll = 0; | |
4905 | else if (noerror) | |
4906 | return; | |
4907 | else | |
4908 | Fsignal (Qbeginning_of_buffer, Qnil); | |
4909 | } | |
4910 | ||
4911 | /* If control gets here, then we vscrolled. */ | |
4912 | ||
4913 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4914 | ||
4915 | /* Don't try to change the window start below. */ | |
4916 | vscrolled = 1; | |
5500c422 GM |
4917 | } |
4918 | ||
5cdb3cf3 MB |
4919 | if (! vscrolled) |
4920 | { | |
dad67609 RS |
4921 | int pos = IT_CHARPOS (it); |
4922 | int bytepos; | |
e68def1e AS |
4923 | |
4924 | /* If in the middle of a multi-glyph character move forward to | |
4925 | the next character. */ | |
4926 | if (in_display_vector_p (&it)) | |
4927 | { | |
4928 | ++pos; | |
4929 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4930 | } | |
4931 | ||
5cdb3cf3 | 4932 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4933 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4934 | w->buffer); |
dad67609 RS |
4935 | bytepos = XMARKER (w->start)->bytepos; |
4936 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4937 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4938 | w->update_mode_line = Qt; |
4939 | XSETFASTINT (w->last_modified, 0); | |
4940 | XSETFASTINT (w->last_overlay_modified, 0); | |
4941 | /* Set force_start so that redisplay_window will run the | |
4942 | window-scroll-functions. */ | |
4943 | w->force_start = Qt; | |
4944 | } | |
177c0ea7 | 4945 | |
dc297565 RS |
4946 | /* The rest of this function uses current_y in a nonstandard way, |
4947 | not including the height of the header line if any. */ | |
5500c422 | 4948 | it.current_y = it.vpos = 0; |
177c0ea7 | 4949 | |
940f53e5 RS |
4950 | /* Move PT out of scroll margins. |
4951 | This code wants current_y to be zero at the window start position | |
4952 | even if there is a header line. */ | |
4953 | this_scroll_margin = max (0, scroll_margin); | |
4954 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4955 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4956 | ||
4957 | if (n > 0) | |
5500c422 | 4958 | { |
940f53e5 RS |
4959 | /* We moved the window start towards ZV, so PT may be now |
4960 | in the scroll margin at the top. */ | |
4961 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4962 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4963 | && (NILP (Vscroll_preserve_screen_position) | |
4964 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4965 | /* We found PT at a legitimate height. Leave it alone. */ |
4966 | ; | |
66fe93d1 | 4967 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4968 | { |
fa3c3426 RS |
4969 | /* If we have a header line, take account of it. |
4970 | This is necessary because we set it.current_y to 0, above. */ | |
c525d842 | 4971 | move_it_to (&it, -1, -1, |
66fe93d1 LT |
4972 | window_scroll_pixel_based_preserve_y |
4973 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c525d842 | 4974 | -1, MOVE_TO_Y); |
940f53e5 RS |
4975 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4976 | } | |
4977 | else | |
5500c422 | 4978 | { |
5500c422 | 4979 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4980 | { |
4981 | int prev = it.current_y; | |
4982 | move_it_by_lines (&it, 1, 1); | |
4983 | if (prev == it.current_y) | |
4984 | break; | |
4985 | } | |
5500c422 GM |
4986 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4987 | } | |
940f53e5 RS |
4988 | } |
4989 | else if (n < 0) | |
4990 | { | |
4991 | int charpos, bytepos; | |
aed328bf | 4992 | int partial_p; |
940f53e5 | 4993 | |
66fe93d1 LT |
4994 | /* Save our position, for the |
4995 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4996 | charpos = IT_CHARPOS (it); |
4997 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4998 | |
940f53e5 RS |
4999 | /* We moved the window start towards BEGV, so PT may be now |
5000 | in the scroll margin at the bottom. */ | |
5001 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5002 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5003 | - this_scroll_margin - 1), | |
5004 | -1, | |
940f53e5 RS |
5005 | MOVE_TO_POS | MOVE_TO_Y); |
5006 | ||
aed328bf KS |
5007 | /* Save our position, in case it's correct. */ |
5008 | charpos = IT_CHARPOS (it); | |
5009 | bytepos = IT_BYTEPOS (it); | |
5010 | ||
5011 | /* See if point is on a partially visible line at the end. */ | |
5012 | if (it.what == IT_EOB) | |
5013 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5014 | else | |
5015 | { | |
5016 | move_it_by_lines (&it, 1, 1); | |
5017 | partial_p = it.current_y > it.last_visible_y; | |
5018 | } | |
5019 | ||
bdf4ec93 RS |
5020 | if (charpos == PT && !partial_p |
5021 | && (NILP (Vscroll_preserve_screen_position) | |
5022 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5023 | /* We found PT before we found the display margin, so PT is ok. */ |
5024 | ; | |
66fe93d1 | 5025 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5026 | { |
5027 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5028 | start_display (&it, w, start); | |
c525d842 CY |
5029 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5030 | here because we called start_display again and did not | |
5031 | alter it.current_y this time. */ | |
66fe93d1 LT |
5032 | move_it_to (&it, -1, -1, window_scroll_pixel_based_preserve_y, -1, |
5033 | MOVE_TO_Y); | |
940f53e5 RS |
5034 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5035 | } | |
5036 | else | |
5037 | { | |
aed328bf | 5038 | if (partial_p) |
5cdb3cf3 MB |
5039 | /* The last line was only partially visible, so back up two |
5040 | lines to make sure we're on a fully visible line. */ | |
5041 | { | |
5042 | move_it_by_lines (&it, -2, 0); | |
5043 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5044 | } | |
5045 | else | |
5046 | /* No, the position we saved is OK, so use it. */ | |
5047 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5048 | } |
5049 | } | |
5050 | } | |
5051 | ||
5052 | ||
5053 | /* Implementation of window_scroll that works based on screen lines. | |
5054 | See the comment of window_scroll for parameter descriptions. */ | |
5055 | ||
5056 | static void | |
5057 | window_scroll_line_based (window, n, whole, noerror) | |
5058 | Lisp_Object window; | |
5059 | int n; | |
5060 | int whole; | |
5061 | int noerror; | |
7ab12479 JB |
5062 | { |
5063 | register struct window *w = XWINDOW (window); | |
5500c422 | 5064 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5065 | register int pos, pos_byte; |
7ab12479 JB |
5066 | register int ht = window_internal_height (w); |
5067 | register Lisp_Object tem; | |
5068 | int lose; | |
5500c422 | 5069 | Lisp_Object bolp; |
345d45b2 | 5070 | int startpos; |
101d1605 RS |
5071 | struct position posit; |
5072 | int original_vpos; | |
5073 | ||
d4e7cf01 GM |
5074 | /* If scrolling screen-fulls, compute the number of lines to |
5075 | scroll from the window's height. */ | |
5076 | if (whole) | |
5077 | n *= max (1, ht - next_screen_context_lines); | |
5078 | ||
101d1605 RS |
5079 | startpos = marker_position (w->start); |
5080 | ||
5081 | posit = *compute_motion (startpos, 0, 0, 0, | |
5082 | PT, ht, 0, | |
ec2b66c4 | 5083 | -1, XINT (w->hscroll), |
101d1605 RS |
5084 | 0, w); |
5085 | original_vpos = posit.vpos; | |
0a1f771a | 5086 | |
d834a2e9 | 5087 | XSETFASTINT (tem, PT); |
6ffdb539 | 5088 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5089 | |
265a9e55 | 5090 | if (NILP (tem)) |
7ab12479 | 5091 | { |
cd2be1dd | 5092 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5093 | startpos = PT; |
7ab12479 JB |
5094 | } |
5095 | ||
345d45b2 | 5096 | SET_PT (startpos); |
5ce7b543 | 5097 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5098 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5099 | pos = PT; |
b73ea88e | 5100 | pos_byte = PT_BYTE; |
7ab12479 | 5101 | bolp = Fbolp (); |
b73ea88e | 5102 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5103 | |
5104 | if (lose) | |
f8026fd8 JB |
5105 | { |
5106 | if (noerror) | |
5107 | return; | |
5108 | else | |
5109 | Fsignal (Qbeginning_of_buffer, Qnil); | |
5110 | } | |
7ab12479 JB |
5111 | |
5112 | if (pos < ZV) | |
7ab12479 | 5113 | { |
0c7da84e RS |
5114 | int this_scroll_margin = scroll_margin; |
5115 | ||
5116 | /* Don't use a scroll margin that is negative or too large. */ | |
5117 | if (this_scroll_margin < 0) | |
5118 | this_scroll_margin = 0; | |
5119 | ||
949cf20f KS |
5120 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5121 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5122 | |
b73ea88e | 5123 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5124 | w->start_at_line_beg = bolp; |
5125 | w->update_mode_line = Qt; | |
d834a2e9 | 5126 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5127 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5128 | /* Set force_start so that redisplay_window will run |
5129 | the window-scroll-functions. */ | |
5130 | w->force_start = Qt; | |
0c7da84e | 5131 | |
bdf4ec93 RS |
5132 | if (!NILP (Vscroll_preserve_screen_position) |
5133 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5134 | { |
b73ea88e | 5135 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 5136 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 5137 | } |
101d1605 RS |
5138 | /* If we scrolled forward, put point enough lines down |
5139 | that it is outside the scroll margin. */ | |
5140 | else if (n > 0) | |
0c7da84e | 5141 | { |
101d1605 RS |
5142 | int top_margin; |
5143 | ||
5144 | if (this_scroll_margin > 0) | |
5145 | { | |
b73ea88e | 5146 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5147 | Fvertical_motion (make_number (this_scroll_margin), window); |
5148 | top_margin = PT; | |
5149 | } | |
5150 | else | |
5151 | top_margin = pos; | |
5152 | ||
5153 | if (top_margin <= opoint) | |
b73ea88e | 5154 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5155 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5156 | { |
b73ea88e | 5157 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5158 | Fvertical_motion (make_number (original_vpos), window); |
5159 | } | |
9317a85d | 5160 | else |
335406fc | 5161 | SET_PT (top_margin); |
0c7da84e | 5162 | } |
101d1605 | 5163 | else if (n < 0) |
7ab12479 | 5164 | { |
101d1605 RS |
5165 | int bottom_margin; |
5166 | ||
0c7da84e RS |
5167 | /* If we scrolled backward, put point near the end of the window |
5168 | but not within the scroll margin. */ | |
b73ea88e | 5169 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5170 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5171 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5172 | bottom_margin = PT; | |
5173 | else | |
5174 | bottom_margin = PT + 1; | |
5175 | ||
5176 | if (bottom_margin > opoint) | |
b73ea88e | 5177 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5178 | else |
101d1605 | 5179 | { |
5500c422 | 5180 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5181 | { |
b73ea88e | 5182 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5183 | Fvertical_motion (make_number (original_vpos), window); |
5184 | } | |
5185 | else | |
5186 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5187 | } |
7ab12479 JB |
5188 | } |
5189 | } | |
5190 | else | |
f8026fd8 JB |
5191 | { |
5192 | if (noerror) | |
5193 | return; | |
5194 | else | |
5195 | Fsignal (Qend_of_buffer, Qnil); | |
5196 | } | |
7ab12479 | 5197 | } |
5500c422 GM |
5198 | |
5199 | ||
5200 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5201 | screen-full which is defined as the height of the window minus | |
5202 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5203 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5204 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5205 | |
5206 | static void | |
5207 | scroll_command (n, direction) | |
5500c422 | 5208 | Lisp_Object n; |
7ab12479 JB |
5209 | int direction; |
5210 | { | |
331379bf | 5211 | int count = SPECPDL_INDEX (); |
7ab12479 | 5212 | |
5500c422 GM |
5213 | xassert (abs (direction) == 1); |
5214 | ||
5215 | /* If selected window's buffer isn't current, make it current for | |
5216 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5217 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5218 | { |
5219 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5220 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5221 | |
5222 | /* Make redisplay consider other windows than just selected_window. */ | |
5223 | ++windows_or_buffers_changed; | |
95605e15 | 5224 | } |
7ab12479 | 5225 | |
265a9e55 | 5226 | if (NILP (n)) |
d4e7cf01 | 5227 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5228 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5229 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5230 | else |
5231 | { | |
5232 | n = Fprefix_numeric_value (n); | |
101d1605 | 5233 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5234 | } |
95605e15 JB |
5235 | |
5236 | unbind_to (count, Qnil); | |
7ab12479 JB |
5237 | } |
5238 | ||
5239 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5240 | doc: /* Scroll text of current window upward ARG lines. |
5241 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5242 | A near full screen is `next-screen-context-lines' less than a full screen. |
5243 | Negative ARG means scroll downward. | |
5244 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5245 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5246 | (arg) | |
413430c5 | 5247 | Lisp_Object arg; |
7ab12479 | 5248 | { |
413430c5 | 5249 | scroll_command (arg, 1); |
7ab12479 JB |
5250 | return Qnil; |
5251 | } | |
5252 | ||
5253 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5254 | doc: /* Scroll text of current window down ARG lines. |
5255 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5256 | A near full screen is `next-screen-context-lines' less than a full screen. |
5257 | Negative ARG means scroll upward. | |
5258 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5259 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5260 | (arg) | |
413430c5 | 5261 | Lisp_Object arg; |
7ab12479 | 5262 | { |
413430c5 | 5263 | scroll_command (arg, -1); |
7ab12479 JB |
5264 | return Qnil; |
5265 | } | |
ccd0664b RS |
5266 | \f |
5267 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5268 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5269 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5270 | showing that buffer is used. |
5271 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5272 | specifies the window. This takes precedence over | |
5273 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5274 | () |
7ab12479 | 5275 | { |
ccd0664b | 5276 | Lisp_Object window; |
7ab12479 JB |
5277 | |
5278 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5279 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5280 | window = Vminibuf_scroll_window; |
5281 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5282 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5283 | { |
5284 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5285 | if (NILP (window)) |
53f76081 | 5286 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5287 | } |
5288 | else | |
dbc4e1c1 JB |
5289 | { |
5290 | /* Nothing specified; look for a neighboring window on the same | |
5291 | frame. */ | |
5292 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5293 | ||
5294 | if (EQ (window, selected_window)) | |
5295 | /* That didn't get us anywhere; look for a window on another | |
5296 | visible frame. */ | |
5297 | do | |
5298 | window = Fnext_window (window, Qnil, Qt); | |
5299 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5300 | && ! EQ (window, selected_window)); | |
5301 | } | |
5302 | ||
b7826503 | 5303 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5304 | |
5305 | if (EQ (window, selected_window)) | |
5306 | error ("There is no other window"); | |
5307 | ||
ccd0664b RS |
5308 | return window; |
5309 | } | |
5310 | ||
5311 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5312 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5313 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5314 | The next window is the one below the current one; or the one at the top | |
5315 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5316 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5317 | When calling from a program, supply as argument a number, nil, or `-'. | |
5318 | ||
fdb82f93 | 5319 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5320 | showing that buffer, popping the buffer up if necessary. |
5321 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5322 | specifies the window to scroll. This takes precedence over | |
5323 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5324 | (arg) |
d4e7cf01 | 5325 | Lisp_Object arg; |
ccd0664b | 5326 | { |
d4e7cf01 GM |
5327 | Lisp_Object window; |
5328 | struct window *w; | |
331379bf | 5329 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5330 | |
5331 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5332 | w = XWINDOW (window); |
7ab12479 JB |
5333 | |
5334 | /* Don't screw up if window_scroll gets an error. */ | |
5335 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5336 | ++windows_or_buffers_changed; |
7ab12479 JB |
5337 | |
5338 | Fset_buffer (w->buffer); | |
5339 | SET_PT (marker_position (w->pointm)); | |
5340 | ||
413430c5 | 5341 | if (NILP (arg)) |
d4e7cf01 | 5342 | window_scroll (window, 1, 1, 1); |
413430c5 | 5343 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5344 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5345 | else |
5346 | { | |
413430c5 EN |
5347 | if (CONSP (arg)) |
5348 | arg = Fcar (arg); | |
b7826503 | 5349 | CHECK_NUMBER (arg); |
101d1605 | 5350 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5351 | } |
5352 | ||
b73ea88e | 5353 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5354 | unbind_to (count, Qnil); |
7ab12479 JB |
5355 | |
5356 | return Qnil; | |
5357 | } | |
5358 | \f | |
dc297565 | 5359 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5360 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5361 | Default for ARG is window width minus 2. |
5362 | Value is the total amount of leftward horizontal scrolling in | |
5363 | effect after the change. | |
dc297565 RS |
5364 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5365 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5366 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5367 | by this function. This happens in an interactive call. */) |
5368 | (arg, set_minimum) | |
5369 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5370 | { |
c67fa410 GM |
5371 | Lisp_Object result; |
5372 | int hscroll; | |
5373 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5374 | |
265a9e55 | 5375 | if (NILP (arg)) |
949cf20f | 5376 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5377 | else |
5378 | arg = Fprefix_numeric_value (arg); | |
5379 | ||
c67fa410 GM |
5380 | hscroll = XINT (w->hscroll) + XINT (arg); |
5381 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5382 | ||
dc297565 | 5383 | if (!NILP (set_minimum)) |
c67fa410 GM |
5384 | w->min_hscroll = w->hscroll; |
5385 | ||
5386 | return result; | |
7ab12479 JB |
5387 | } |
5388 | ||
dc297565 | 5389 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5390 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5391 | Default for ARG is window width minus 2. |
5392 | Value is the total amount of leftward horizontal scrolling in | |
5393 | effect after the change. | |
dc297565 RS |
5394 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5395 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5396 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5397 | by this function. This happens in an interactive call. */) |
5398 | (arg, set_minimum) | |
a93563fd | 5399 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5400 | { |
c67fa410 GM |
5401 | Lisp_Object result; |
5402 | int hscroll; | |
5403 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5404 | |
265a9e55 | 5405 | if (NILP (arg)) |
949cf20f | 5406 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5407 | else |
5408 | arg = Fprefix_numeric_value (arg); | |
5409 | ||
c67fa410 GM |
5410 | hscroll = XINT (w->hscroll) - XINT (arg); |
5411 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5412 | |
dc297565 | 5413 | if (!NILP (set_minimum)) |
c67fa410 GM |
5414 | w->min_hscroll = w->hscroll; |
5415 | ||
5416 | return result; | |
7ab12479 JB |
5417 | } |
5418 | ||
fa832261 KS |
5419 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5420 | doc: /* Return the window which was selected when entering the minibuffer. | |
5421 | Returns nil, if current window is not a minibuffer window. */) | |
5422 | () | |
5423 | { | |
5424 | if (minibuf_level > 0 | |
5425 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5426 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5427 | return minibuf_selected_window; | |
5428 | ||
5429 | return Qnil; | |
5430 | } | |
5431 | ||
12c8b416 GM |
5432 | /* Value is the number of lines actually displayed in window W, |
5433 | as opposed to its height. */ | |
5434 | ||
5435 | static int | |
5436 | displayed_window_lines (w) | |
5437 | struct window *w; | |
5438 | { | |
5439 | struct it it; | |
5440 | struct text_pos start; | |
5441 | int height = window_box_height (w); | |
5442 | struct buffer *old_buffer; | |
5443 | int bottom_y; | |
5444 | ||
5445 | if (XBUFFER (w->buffer) != current_buffer) | |
5446 | { | |
5447 | old_buffer = current_buffer; | |
5448 | set_buffer_internal (XBUFFER (w->buffer)); | |
5449 | } | |
5450 | else | |
5451 | old_buffer = NULL; | |
5452 | ||
521b203e GM |
5453 | /* In case W->start is out of the accessible range, do something |
5454 | reasonable. This happens in Info mode when Info-scroll-down | |
5455 | calls (recenter -1) while W->start is 1. */ | |
5456 | if (XMARKER (w->start)->charpos < BEGV) | |
5457 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5458 | else if (XMARKER (w->start)->charpos > ZV) | |
5459 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5460 | else | |
5461 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5462 | ||
12c8b416 GM |
5463 | start_display (&it, w, start); |
5464 | move_it_vertically (&it, height); | |
c8bc6f65 | 5465 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5466 | |
1de65f51 RS |
5467 | /* rms: On a non-window display, |
5468 | the value of it.vpos at the bottom of the screen | |
5469 | seems to be 1 larger than window_box_height (w). | |
5470 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5471 | when ZV is on the last screen line | |
5472 | moves to the previous screen line instead of the last one. */ | |
5473 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5474 | height++; | |
5475 | ||
12c8b416 GM |
5476 | /* Add in empty lines at the bottom of the window. */ |
5477 | if (bottom_y < height) | |
5478 | { | |
949cf20f | 5479 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5480 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5481 | } |
5482 | ||
c8bc6f65 GM |
5483 | if (old_buffer) |
5484 | set_buffer_internal (old_buffer); | |
5485 | ||
12c8b416 GM |
5486 | return it.vpos; |
5487 | } | |
5488 | ||
5489 | ||
7ab12479 | 5490 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5491 | doc: /* Center point in window and redisplay frame. |
5492 | With prefix argument ARG, recenter putting point on screen line ARG | |
5493 | relative to the current window. If ARG is negative, it counts up from the | |
5494 | bottom of the window. (ARG should be less than the height of the window.) | |
5495 | ||
5496 | If ARG is omitted or nil, erase the entire frame and then | |
5497 | redraw with point in the center of the current window. | |
5498 | Just C-u as prefix means put point in the center of the window | |
5499 | and redisplay normally--don't erase and redraw the frame. */) | |
5500 | (arg) | |
413430c5 | 5501 | register Lisp_Object arg; |
7ab12479 | 5502 | { |
6df47b59 | 5503 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5504 | struct buffer *buf = XBUFFER (w->buffer); |
5505 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5506 | int center_p = 0; |
5507 | int charpos, bytepos; | |
f6b43440 RS |
5508 | int iarg; |
5509 | int this_scroll_margin; | |
7ab12479 | 5510 | |
0fa5d25b RS |
5511 | /* If redisplay is suppressed due to an error, try again. */ |
5512 | obuf->display_error_modiff = 0; | |
5513 | ||
413430c5 | 5514 | if (NILP (arg)) |
7ab12479 | 5515 | { |
f02d6d5c KH |
5516 | int i; |
5517 | ||
5518 | /* Invalidate pixel data calculated for all compositions. */ | |
5519 | for (i = 0; i < n_compositions; i++) | |
5520 | composition_table[i]->font = NULL; | |
7ab12479 | 5521 | |
527b6458 | 5522 | Fredraw_frame (w->frame); |
44fa5b1e | 5523 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 5524 | center_p = 1; |
7ab12479 | 5525 | } |
413430c5 | 5526 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5527 | center_p = 1; |
7ab12479 JB |
5528 | else |
5529 | { | |
413430c5 | 5530 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5531 | CHECK_NUMBER (arg); |
ae12ecd7 | 5532 | iarg = XINT (arg); |
7ab12479 JB |
5533 | } |
5534 | ||
478292ed | 5535 | set_buffer_internal (buf); |
7ab12479 | 5536 | |
f6b43440 RS |
5537 | /* Do this after making BUF current |
5538 | in case scroll_margin is buffer-local. */ | |
5539 | this_scroll_margin = max (0, scroll_margin); | |
5540 | this_scroll_margin = min (this_scroll_margin, | |
5541 | XFASTINT (w->total_lines) / 4); | |
5542 | ||
521b203e | 5543 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5544 | have variable-height lines and centering point on the basis of |
5545 | line counts would lead to strange effects. */ | |
521b203e | 5546 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5547 | { |
6df47b59 GM |
5548 | if (center_p) |
5549 | { | |
521b203e GM |
5550 | struct it it; |
5551 | struct text_pos pt; | |
177c0ea7 | 5552 | |
521b203e GM |
5553 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5554 | start_display (&it, w, pt); | |
f204989e | 5555 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5556 | charpos = IT_CHARPOS (it); |
5557 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5558 | } |
f6b43440 | 5559 | else if (iarg < 0) |
6df47b59 | 5560 | { |
521b203e GM |
5561 | struct it it; |
5562 | struct text_pos pt; | |
f6b43440 | 5563 | int nlines = -iarg; |
f204989e KS |
5564 | int extra_line_spacing; |
5565 | int h = window_box_height (w); | |
177c0ea7 | 5566 | |
f6b43440 RS |
5567 | iarg = - max (-iarg, this_scroll_margin); |
5568 | ||
521b203e GM |
5569 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5570 | start_display (&it, w, pt); | |
f204989e KS |
5571 | |
5572 | /* Be sure we have the exact height of the full line containing PT. */ | |
5573 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5574 | |
d466fa4d | 5575 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5576 | height minus what's displayed in the line containing PT, |
5577 | and the lines below. */ | |
f204989e KS |
5578 | it.current_y = 0; |
5579 | it.vpos = 0; | |
d466fa4d GM |
5580 | move_it_by_lines (&it, nlines, 1); |
5581 | ||
f204989e KS |
5582 | if (it.vpos == nlines) |
5583 | h -= it.current_y; | |
5584 | else | |
5585 | { | |
5586 | /* Last line has no newline */ | |
5587 | h -= line_bottom_y (&it); | |
5588 | it.vpos++; | |
5589 | } | |
5590 | ||
5591 | /* Don't reserve space for extra line spacing of last line. */ | |
5592 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5593 | |
5594 | /* If we can't move down NLINES lines because we hit | |
5595 | the end of the buffer, count in some empty lines. */ | |
5596 | if (it.vpos < nlines) | |
f204989e KS |
5597 | { |
5598 | nlines -= it.vpos; | |
5599 | extra_line_spacing = it.extra_line_spacing; | |
5600 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5601 | } | |
5602 | if (h <= 0) | |
5603 | return Qnil; | |
201c831a | 5604 | |
f204989e | 5605 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5606 | start_display (&it, w, pt); |
f204989e KS |
5607 | it.current_y = 0; |
5608 | move_it_vertically_backward (&it, h); | |
5609 | ||
5610 | /* If extra line spacing is present, we may move too far | |
5611 | back. This causes the last line to be only partially | |
5612 | visible (which triggers redisplay to recenter that line | |
5613 | in the middle), so move forward. | |
5614 | But ignore extra line spacing on last line, as it is not | |
5615 | considered to be part of the visible height of the line. | |
5616 | */ | |
5617 | h += extra_line_spacing; | |
5618 | while (-it.current_y > h) | |
5619 | move_it_by_lines (&it, 1, 1); | |
5620 | ||
521b203e GM |
5621 | charpos = IT_CHARPOS (it); |
5622 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5623 | } |
521b203e GM |
5624 | else |
5625 | { | |
5626 | struct position pos; | |
f6b43440 | 5627 | |
f6b43440 RS |
5628 | iarg = max (iarg, this_scroll_margin); |
5629 | ||
5630 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5631 | charpos = pos.bufpos; |
5632 | bytepos = pos.bytepos; | |
5633 | } | |
5634 | } | |
5635 | else | |
5636 | { | |
5637 | struct position pos; | |
5638 | int ht = window_internal_height (w); | |
5639 | ||
5640 | if (center_p) | |
a4429c5b | 5641 | iarg = ht / 2; |
f567c488 KS |
5642 | else if (iarg < 0) |
5643 | iarg += ht; | |
f6b43440 RS |
5644 | |
5645 | /* Don't let it get into the margin at either top or bottom. */ | |
5646 | iarg = max (iarg, this_scroll_margin); | |
5647 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5648 | |
f6b43440 | 5649 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5650 | charpos = pos.bufpos; |
5651 | bytepos = pos.bytepos; | |
5652 | } | |
5653 | ||
5654 | /* Set the new window start. */ | |
5655 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5656 | w->window_end_valid = Qnil; |
177c0ea7 | 5657 | |
95605b1b RS |
5658 | w->optional_new_start = Qt; |
5659 | ||
6df47b59 GM |
5660 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5661 | w->start_at_line_beg = Qt; | |
5662 | else | |
5663 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5664 | |
478292ed | 5665 | set_buffer_internal (obuf); |
7ab12479 JB |
5666 | return Qnil; |
5667 | } | |
b7617575 GM |
5668 | |
5669 | ||
81fe0836 | 5670 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5671 | 0, 1, 0, |
5672 | doc: /* Return the height in lines of the text display area of WINDOW. | |
5673 | This doesn't include the mode-line (or header-line if any) or any | |
5674 | partial-height lines in the text display area. */) | |
5675 | (window) | |
81fe0836 MB |
5676 | Lisp_Object window; |
5677 | { | |
5678 | struct window *w = decode_window (window); | |
5679 | int pixel_height = window_box_height (w); | |
949cf20f | 5680 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5681 | return make_number (line_height); |
5682 | } | |
5683 | ||
5684 | ||
7ab12479 JB |
5685 | \f |
5686 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5687 | 1, 1, "P", |
5688 | doc: /* Position point relative to window. | |
5689 | With no argument, position point at center of window. | |
5690 | An argument specifies vertical position within the window; | |
5691 | zero means top of window, negative means relative to bottom of window. */) | |
5692 | (arg) | |
b7617575 | 5693 | Lisp_Object arg; |
7ab12479 | 5694 | { |
b7617575 GM |
5695 | struct window *w = XWINDOW (selected_window); |
5696 | int lines, start; | |
540b6aa0 | 5697 | Lisp_Object window; |
f6b43440 RS |
5698 | #if 0 |
5699 | int this_scroll_margin; | |
5700 | #endif | |
7ab12479 | 5701 | |
b7617575 | 5702 | window = selected_window; |
7ab12479 JB |
5703 | start = marker_position (w->start); |
5704 | if (start < BEGV || start > ZV) | |
5705 | { | |
b7617575 | 5706 | int height = window_internal_height (w); |
cd2be1dd | 5707 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5708 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5709 | w->start_at_line_beg = Fbolp (); |
5710 | w->force_start = Qt; | |
5711 | } | |
5712 | else | |
b73ea88e | 5713 | Fgoto_char (w->start); |
7ab12479 | 5714 | |
b7617575 | 5715 | lines = displayed_window_lines (w); |
f6b43440 RS |
5716 | |
5717 | #if 0 | |
5718 | this_scroll_margin = max (0, scroll_margin); | |
5719 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5720 | #endif | |
5721 | ||
b7617575 GM |
5722 | if (NILP (arg)) |
5723 | XSETFASTINT (arg, lines / 2); | |
5724 | else | |
5725 | { | |
f6b43440 RS |
5726 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5727 | ||
5728 | if (iarg < 0) | |
5729 | iarg = iarg + lines; | |
5730 | ||
5731 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5732 | to a place inside the scroll margins (which would cause the | |
5733 | next redisplay to scroll). I wrote this code, but then concluded | |
5734 | it is probably better not to install it. However, it is here | |
5735 | inside #if 0 so as not to lose it. -- rms. */ | |
5736 | ||
5737 | /* Don't let it get into the margin at either top or bottom. */ | |
5738 | iarg = max (iarg, this_scroll_margin); | |
5739 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5740 | #endif | |
5741 | ||
5742 | arg = make_number (iarg); | |
b7617575 GM |
5743 | } |
5744 | ||
c8bc6f65 | 5745 | /* Skip past a partially visible first line. */ |
163784df | 5746 | if (w->vscroll) |
163784df MB |
5747 | XSETINT (arg, XINT (arg) + 1); |
5748 | ||
540b6aa0 | 5749 | return Fvertical_motion (arg, window); |
7ab12479 | 5750 | } |
5500c422 GM |
5751 | |
5752 | ||
7ab12479 | 5753 | \f |
5500c422 GM |
5754 | /*********************************************************************** |
5755 | Window Configuration | |
5756 | ***********************************************************************/ | |
5757 | ||
7ab12479 JB |
5758 | struct save_window_data |
5759 | { | |
f5ccc0cc | 5760 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 5761 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 5762 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 5763 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 5764 | Lisp_Object selected_frame; |
7ab12479 JB |
5765 | Lisp_Object current_window; |
5766 | Lisp_Object current_buffer; | |
5767 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5768 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5769 | Lisp_Object root_window; |
bdc727bf | 5770 | Lisp_Object focus_frame; |
756b6edc RS |
5771 | /* Record the values of window-min-width and window-min-height |
5772 | so that window sizes remain consistent with them. */ | |
5773 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
5774 | /* A vector, each of whose elements is a struct saved_window |
5775 | for one window. */ | |
7ab12479 JB |
5776 | Lisp_Object saved_windows; |
5777 | }; | |
ff06df24 | 5778 | |
cbff28e8 | 5779 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5780 | struct saved_window |
ea68264b GM |
5781 | { |
5782 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
5783 | EMACS_INT size_from_Lisp_Vector_struct; | |
5784 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 5785 | |
ea68264b GM |
5786 | Lisp_Object window; |
5787 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5788 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5789 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5790 | Lisp_Object parent, prev; |
5791 | Lisp_Object start_at_line_beg; | |
5792 | Lisp_Object display_table; | |
949cf20f KS |
5793 | Lisp_Object orig_top_line, orig_total_lines; |
5794 | Lisp_Object left_margin_cols, right_margin_cols; | |
5795 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5796 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
ea68264b GM |
5797 | }; |
5798 | ||
7ab12479 JB |
5799 | #define SAVED_WINDOW_N(swv,n) \ |
5800 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5801 | ||
5802 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5803 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5804 | (object) | |
413430c5 | 5805 | Lisp_Object object; |
7ab12479 | 5806 | { |
413430c5 | 5807 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
5808 | return Qt; |
5809 | return Qnil; | |
5810 | } | |
5811 | ||
3f8ab7bd | 5812 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5813 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5814 | (config) | |
3f8ab7bd RS |
5815 | Lisp_Object config; |
5816 | { | |
5817 | register struct save_window_data *data; | |
5818 | struct Lisp_Vector *saved_windows; | |
5819 | ||
5820 | if (! WINDOW_CONFIGURATIONP (config)) | |
5821 | wrong_type_argument (Qwindow_configuration_p, config); | |
5822 | ||
5823 | data = (struct save_window_data *) XVECTOR (config); | |
5824 | saved_windows = XVECTOR (data->saved_windows); | |
5825 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5826 | } | |
5827 | ||
d5b2799e | 5828 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5829 | Sset_window_configuration, 1, 1, 0, |
5830 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5831 | CONFIGURATION must be a value previously returned | |
5832 | by `current-window-configuration' (which see). | |
5833 | If CONFIGURATION was made from a frame that is now deleted, | |
5834 | only frame-independent values can be restored. In this case, | |
5835 | the return value is nil. Otherwise the value is t. */) | |
5836 | (configuration) | |
2f83aebe | 5837 | Lisp_Object configuration; |
7ab12479 | 5838 | { |
7ab12479 JB |
5839 | register struct save_window_data *data; |
5840 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5841 | Lisp_Object new_current_buffer; |
fd482be5 | 5842 | Lisp_Object frame; |
44fa5b1e | 5843 | FRAME_PTR f; |
72695e47 | 5844 | int old_point = -1; |
7ab12479 | 5845 | |
017b2bad | 5846 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 5847 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 5848 | |
2f83aebe | 5849 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5850 | saved_windows = XVECTOR (data->saved_windows); |
5851 | ||
7ab12479 | 5852 | new_current_buffer = data->current_buffer; |
265a9e55 | 5853 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5854 | new_current_buffer = Qnil; |
72695e47 | 5855 | else |
73cadfc1 DK |
5856 | { |
5857 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5858 | /* The code further down "preserves point" by saving here PT in |
5859 | old_point and then setting it later back into PT. When the | |
5860 | current-selected-window and the final-selected-window both show | |
5861 | the current buffer, this suffers from the problem that the | |
5862 | current PT is the window-point of the current-selected-window, | |
5863 | while the final PT is the point of the final-selected-window, so | |
5864 | this copy from one PT to the other would end up moving the | |
5865 | window-point of the final-selected-window to the window-point of | |
5866 | the current-selected-window. So we have to be careful which | |
5867 | point of the current-buffer we copy into old_point. */ | |
5868 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5869 | && WINDOWP (selected_window) | |
5870 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5871 | && !EQ (selected_window, data->current_window)) | |
5872 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5873 | else | |
5874 | old_point = PT; | |
73cadfc1 | 5875 | else |
203eb0aa SM |
5876 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5877 | point in new_current_buffer as of the last time this buffer was | |
5878 | used. This can be non-deterministic since it can be changed by | |
5879 | things like jit-lock by mere temporary selection of some random | |
5880 | window that happens to show this buffer. | |
5881 | So if possible we want this arbitrary choice of "which point" to | |
5882 | be the one from the to-be-selected-window so as to prevent this | |
5883 | window's cursor from being copied from another window. */ | |
5884 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5885 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5886 | && !EQ (selected_window, data->current_window)) | |
5887 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5888 | else | |
5889 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5890 | } |
7ab12479 | 5891 | |
fd482be5 JB |
5892 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5893 | f = XFRAME (frame); | |
177c0ea7 | 5894 | |
fd482be5 JB |
5895 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5896 | However, there is other stuff we should still try to do below. */ | |
5897 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5898 | { |
fd482be5 JB |
5899 | register struct window *w; |
5900 | register struct saved_window *p; | |
5500c422 GM |
5901 | struct window *root_window; |
5902 | struct window **leaf_windows; | |
5903 | int n_leaf_windows; | |
c4280705 | 5904 | int k, i, n; |
fd482be5 JB |
5905 | |
5906 | /* If the frame has been resized since this window configuration was | |
5907 | made, we change the frame to the size specified in the | |
5908 | configuration, restore the configuration, and then resize it | |
5909 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5910 | int previous_frame_lines = FRAME_LINES (f); |
5911 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5912 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5913 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5914 | |
d2b35234 RS |
5915 | /* The mouse highlighting code could get screwed up |
5916 | if it runs during this. */ | |
5917 | BLOCK_INPUT; | |
5918 | ||
949cf20f KS |
5919 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
5920 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
5921 | change_frame_size (f, XFASTINT (data->frame_lines), | |
5922 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 5923 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
5924 | if (XFASTINT (data->frame_menu_bar_lines) |
5925 | != previous_frame_menu_bar_lines) | |
f8ad443a | 5926 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 5927 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5928 | if (XFASTINT (data->frame_tool_bar_lines) |
5929 | != previous_frame_tool_bar_lines) | |
5930 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 5931 | #endif |
217f2871 | 5932 | #endif |
fd482be5 | 5933 | |
a46c0153 RS |
5934 | /* "Swap out" point from the selected window's buffer |
5935 | into the window itself. (Normally the pointm of the selected | |
5936 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5937 | restoring the window contents, and prevent it from |
5938 | being done later on when we select a new window. */ | |
596ae0cf RS |
5939 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5940 | { | |
5941 | w = XWINDOW (selected_window); | |
5942 | set_marker_both (w->pointm, | |
5943 | w->buffer, | |
5944 | BUF_PT (XBUFFER (w->buffer)), | |
5945 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5946 | } | |
5947 | ||
fd482be5 | 5948 | windows_or_buffers_changed++; |
29aeee73 | 5949 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5950 | |
5500c422 | 5951 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5952 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
5953 | really like to do is to free only those matrices not reused |
5954 | below. */ | |
5955 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
5956 | leaf_windows | |
5957 | = (struct window **) alloca (count_windows (root_window) | |
5958 | * sizeof (struct window *)); | |
5959 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5960 | ||
756b6edc RS |
5961 | /* Temporarily avoid any problems with windows that are smaller |
5962 | than they are supposed to be. */ | |
5963 | window_min_height = 1; | |
5964 | window_min_width = 1; | |
5965 | ||
fd482be5 JB |
5966 | /* Kludge Alert! |
5967 | Mark all windows now on frame as "deleted". | |
5968 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5969 | |
fd482be5 JB |
5970 | Save their current buffers in their height fields, since we may |
5971 | need it later, if a buffer saved in the configuration is now | |
5972 | dead. */ | |
5973 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
5974 | ||
5975 | for (k = 0; k < saved_windows->size; k++) | |
5976 | { | |
5977 | p = SAVED_WINDOW_N (saved_windows, k); | |
5978 | w = XWINDOW (p->window); | |
5979 | w->next = Qnil; | |
7ab12479 | 5980 | |
fd482be5 JB |
5981 | if (!NILP (p->parent)) |
5982 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5983 | XFASTINT (p->parent))->window; | |
5984 | else | |
5985 | w->parent = Qnil; | |
7ab12479 | 5986 | |
fd482be5 | 5987 | if (!NILP (p->prev)) |
7ab12479 | 5988 | { |
fd482be5 JB |
5989 | w->prev = SAVED_WINDOW_N (saved_windows, |
5990 | XFASTINT (p->prev))->window; | |
5991 | XWINDOW (w->prev)->next = p->window; | |
5992 | } | |
5993 | else | |
5994 | { | |
5995 | w->prev = Qnil; | |
5996 | if (!NILP (w->parent)) | |
5997 | { | |
949cf20f | 5998 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5999 | { |
6000 | XWINDOW (w->parent)->vchild = p->window; | |
6001 | XWINDOW (w->parent)->hchild = Qnil; | |
6002 | } | |
6003 | else | |
6004 | { | |
6005 | XWINDOW (w->parent)->hchild = p->window; | |
6006 | XWINDOW (w->parent)->vchild = Qnil; | |
6007 | } | |
6008 | } | |
6009 | } | |
6010 | ||
6011 | /* If we squirreled away the buffer in the window's height, | |
6012 | restore it now. */ | |
949cf20f KS |
6013 | if (BUFFERP (w->total_lines)) |
6014 | w->buffer = w->total_lines; | |
6015 | w->left_col = p->left_col; | |
6016 | w->top_line = p->top_line; | |
6017 | w->total_cols = p->total_cols; | |
6018 | w->total_lines = p->total_lines; | |
fd482be5 | 6019 | w->hscroll = p->hscroll; |
ea68264b | 6020 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6021 | w->display_table = p->display_table; |
949cf20f KS |
6022 | w->orig_top_line = p->orig_top_line; |
6023 | w->orig_total_lines = p->orig_total_lines; | |
6024 | w->left_margin_cols = p->left_margin_cols; | |
6025 | w->right_margin_cols = p->right_margin_cols; | |
6026 | w->left_fringe_width = p->left_fringe_width; | |
6027 | w->right_fringe_width = p->right_fringe_width; | |
6028 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6029 | w->scroll_bar_width = p->scroll_bar_width; | |
6030 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
d834a2e9 | 6031 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6032 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6033 | |
6034 | /* Reinstall the saved buffer and pointers into it. */ | |
6035 | if (NILP (p->buffer)) | |
6036 | w->buffer = p->buffer; | |
6037 | else | |
6038 | { | |
6039 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6040 | /* If saved buffer is alive, install it. */ | |
6041 | { | |
6042 | w->buffer = p->buffer; | |
6043 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6044 | set_marker_restricted (w->start, p->start, w->buffer); |
6045 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6046 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6047 | p->mark, w->buffer); |
fd482be5 JB |
6048 | |
6049 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6050 | restore the location of point in the buffer which was |
6051 | current when the window configuration was recorded. */ | |
6b54027b RS |
6052 | if (!EQ (p->buffer, new_current_buffer) |
6053 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6054 | Fgoto_char (w->pointm); |
6055 | } | |
52a68e98 RS |
6056 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6057 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6058 | { |
fd482be5 JB |
6059 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6060 | /* This will set the markers to beginning of visible | |
6061 | range. */ | |
6062 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6063 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6064 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6065 | } |
6066 | else | |
fd482be5 | 6067 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6068 | are real. */ |
7ab12479 | 6069 | { |
fd482be5 JB |
6070 | /* Set window markers at start of visible range. */ |
6071 | if (XMARKER (w->start)->buffer == 0) | |
6072 | set_marker_restricted (w->start, make_number (0), | |
6073 | w->buffer); | |
6074 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6075 | set_marker_restricted_both (w->pointm, w->buffer, |
6076 | BUF_PT (XBUFFER (w->buffer)), | |
6077 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6078 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6079 | } |
6080 | } | |
6081 | } | |
9ace597f | 6082 | |
fd482be5 | 6083 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6084 | /* Prevent "swapping out point" in the old selected window |
6085 | using the buffer that has been restored into it. | |
a46c0153 | 6086 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6087 | selected_window = Qnil; |
a46c0153 RS |
6088 | |
6089 | /* Arrange *not* to restore point in the buffer that was | |
6090 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6091 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6092 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6093 | make_number (old_point), |
243a5ce6 | 6094 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6095 | |
14d87dc9 | 6096 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6097 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6098 | = selected_window; | |
7ab12479 | 6099 | |
db269683 | 6100 | if (NILP (data->focus_frame) |
017b2bad | 6101 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6102 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6103 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6104 | |
fd482be5 JB |
6105 | #if 0 /* I don't understand why this is needed, and it causes problems |
6106 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6107 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6108 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6109 | 0, 0); |
fd482be5 JB |
6110 | #endif |
6111 | ||
6112 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6113 | if (previous_frame_lines != FRAME_LINES (f) |
6114 | || previous_frame_cols != FRAME_COLS (f)) | |
6115 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6116 | 0, 0, 0); |
e3678b64 | 6117 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6118 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6119 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6120 | make_number (0)); | |
4314246f | 6121 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6122 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6123 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6124 | make_number (0)); | |
4314246f | 6125 | #endif |
217f2871 | 6126 | #endif |
d2b35234 | 6127 | |
5500c422 | 6128 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6129 | for (i = n = 0; i < n_leaf_windows; ++i) |
6130 | { | |
6131 | if (NILP (leaf_windows[i]->buffer)) | |
6132 | { | |
6133 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6134 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6135 | && NILP (leaf_windows[i]->vchild)); |
6136 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6137 | } |
6138 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6139 | ++n; | |
6140 | } | |
177c0ea7 | 6141 | |
5500c422 GM |
6142 | adjust_glyphs (f); |
6143 | ||
d2b35234 | 6144 | UNBLOCK_INPUT; |
756b6edc | 6145 | |
478292ed RS |
6146 | /* Fselect_window will have made f the selected frame, so we |
6147 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6148 | selected window too, but that doesn't make the call to | |
6149 | Fselect_window above totally superfluous; it still sets f's | |
6150 | selected window. */ | |
6151 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6152 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
6153 | |
6154 | if (! NILP (Vwindow_configuration_change_hook) | |
6155 | && ! NILP (Vrun_hooks)) | |
6156 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
6157 | } | |
bdc727bf JB |
6158 | |
6159 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6160 | Fset_buffer (new_current_buffer); |
bdc727bf | 6161 | |
478292ed RS |
6162 | /* Restore the minimum heights recorded in the configuration. */ |
6163 | window_min_height = XINT (data->min_height); | |
6164 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 6165 | |
478292ed | 6166 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6167 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6168 | |
3f8ab7bd | 6169 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6170 | } |
6171 | ||
44fa5b1e | 6172 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6173 | by setting their buffers to nil. */ |
6174 | ||
fd482be5 | 6175 | void |
7ab12479 JB |
6176 | delete_all_subwindows (w) |
6177 | register struct window *w; | |
6178 | { | |
265a9e55 | 6179 | if (!NILP (w->next)) |
7ab12479 | 6180 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6181 | if (!NILP (w->vchild)) |
7ab12479 | 6182 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6183 | if (!NILP (w->hchild)) |
7ab12479 | 6184 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6185 | |
949cf20f | 6186 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6187 | |
86e48436 RS |
6188 | if (!NILP (w->buffer)) |
6189 | unshow_buffer (w); | |
6190 | ||
605be8af JB |
6191 | /* We set all three of these fields to nil, to make sure that we can |
6192 | distinguish this dead window from any live window. Live leaf | |
6193 | windows will have buffer set, and combination windows will have | |
6194 | vchild or hchild set. */ | |
6195 | w->buffer = Qnil; | |
6196 | w->vchild = Qnil; | |
6197 | w->hchild = Qnil; | |
acf70840 GM |
6198 | |
6199 | Vwindow_list = Qnil; | |
7ab12479 JB |
6200 | } |
6201 | \f | |
6202 | static int | |
6203 | count_windows (window) | |
6204 | register struct window *window; | |
6205 | { | |
6206 | register int count = 1; | |
265a9e55 | 6207 | if (!NILP (window->next)) |
7ab12479 | 6208 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6209 | if (!NILP (window->vchild)) |
7ab12479 | 6210 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6211 | if (!NILP (window->hchild)) |
7ab12479 JB |
6212 | count += count_windows (XWINDOW (window->hchild)); |
6213 | return count; | |
6214 | } | |
6215 | ||
5500c422 | 6216 | |
177c0ea7 | 6217 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6218 | Value is last index + 1. */ |
6219 | ||
6220 | static int | |
6221 | get_leaf_windows (w, flat, i) | |
6222 | struct window *w; | |
6223 | struct window **flat; | |
6224 | int i; | |
6225 | { | |
6226 | while (w) | |
6227 | { | |
6228 | if (!NILP (w->hchild)) | |
6229 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6230 | else if (!NILP (w->vchild)) | |
6231 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6232 | else |
5500c422 GM |
6233 | flat[i++] = w; |
6234 | ||
6235 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6236 | } | |
6237 | ||
6238 | return i; | |
6239 | } | |
6240 | ||
6241 | ||
6242 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6243 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6244 | can be returned. */ | |
6245 | ||
6246 | struct glyph * | |
6247 | get_phys_cursor_glyph (w) | |
6248 | struct window *w; | |
6249 | { | |
6250 | struct glyph_row *row; | |
6251 | struct glyph *glyph; | |
6252 | ||
6253 | if (w->phys_cursor.vpos >= 0 | |
6254 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6255 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6256 | row->enabled_p) | |
6257 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6258 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6259 | else | |
6260 | glyph = NULL; | |
6261 | ||
6262 | return glyph; | |
6263 | } | |
6264 | ||
6265 | ||
7ab12479 JB |
6266 | static int |
6267 | save_window_save (window, vector, i) | |
6268 | Lisp_Object window; | |
6269 | struct Lisp_Vector *vector; | |
6270 | int i; | |
6271 | { | |
6272 | register struct saved_window *p; | |
6273 | register struct window *w; | |
6274 | register Lisp_Object tem; | |
6275 | ||
265a9e55 | 6276 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6277 | { |
6278 | p = SAVED_WINDOW_N (vector, i); | |
6279 | w = XWINDOW (window); | |
6280 | ||
2a1893f4 | 6281 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6282 | p->window = window; |
6283 | p->buffer = w->buffer; | |
949cf20f KS |
6284 | p->left_col = w->left_col; |
6285 | p->top_line = w->top_line; | |
6286 | p->total_cols = w->total_cols; | |
6287 | p->total_lines = w->total_lines; | |
7ab12479 | 6288 | p->hscroll = w->hscroll; |
ea68264b | 6289 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6290 | p->display_table = w->display_table; |
949cf20f KS |
6291 | p->orig_top_line = w->orig_top_line; |
6292 | p->orig_total_lines = w->orig_total_lines; | |
6293 | p->left_margin_cols = w->left_margin_cols; | |
6294 | p->right_margin_cols = w->right_margin_cols; | |
6295 | p->left_fringe_width = w->left_fringe_width; | |
6296 | p->right_fringe_width = w->right_fringe_width; | |
6297 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6298 | p->scroll_bar_width = w->scroll_bar_width; | |
6299 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
265a9e55 | 6300 | if (!NILP (w->buffer)) |
7ab12479 JB |
6301 | { |
6302 | /* Save w's value of point in the window configuration. | |
6303 | If w is the selected window, then get the value of point | |
6304 | from the buffer; pointm is garbage in the selected window. */ | |
6305 | if (EQ (window, selected_window)) | |
6306 | { | |
6307 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6308 | set_marker_both (p->pointm, w->buffer, |
6309 | BUF_PT (XBUFFER (w->buffer)), | |
6310 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6311 | } |
6312 | else | |
eeb82665 | 6313 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6314 | |
eeb82665 | 6315 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6316 | p->start_at_line_beg = w->start_at_line_beg; |
6317 | ||
6318 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6319 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6320 | } |
6321 | else | |
6322 | { | |
6323 | p->pointm = Qnil; | |
6324 | p->start = Qnil; | |
6325 | p->mark = Qnil; | |
6326 | p->start_at_line_beg = Qnil; | |
6327 | } | |
6328 | ||
265a9e55 | 6329 | if (NILP (w->parent)) |
7ab12479 JB |
6330 | p->parent = Qnil; |
6331 | else | |
6332 | p->parent = XWINDOW (w->parent)->temslot; | |
6333 | ||
265a9e55 | 6334 | if (NILP (w->prev)) |
7ab12479 JB |
6335 | p->prev = Qnil; |
6336 | else | |
6337 | p->prev = XWINDOW (w->prev)->temslot; | |
6338 | ||
265a9e55 | 6339 | if (!NILP (w->vchild)) |
7ab12479 | 6340 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6341 | if (!NILP (w->hchild)) |
7ab12479 JB |
6342 | i = save_window_save (w->hchild, vector, i); |
6343 | } | |
6344 | ||
6345 | return i; | |
6346 | } | |
6347 | ||
a0d76c27 | 6348 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6349 | Scurrent_window_configuration, 0, 1, 0, |
6350 | doc: /* Return an object representing the current window configuration of FRAME. | |
6351 | If FRAME is nil or omitted, use the selected frame. | |
6352 | This describes the number of windows, their sizes and current buffers, | |
6353 | and for each displayed buffer, where display starts, and the positions of | |
6354 | point and mark. An exception is made for point in the current buffer: | |
6355 | its value is -not- saved. | |
6356 | This also records the currently selected frame, and FRAME's focus | |
6357 | redirection (see `redirect-frame-focus'). */) | |
6358 | (frame) | |
44fa5b1e | 6359 | Lisp_Object frame; |
7ab12479 JB |
6360 | { |
6361 | register Lisp_Object tem; | |
6362 | register int n_windows; | |
6363 | register struct save_window_data *data; | |
da2792e0 | 6364 | register struct Lisp_Vector *vec; |
7ab12479 | 6365 | register int i; |
44fa5b1e | 6366 | FRAME_PTR f; |
43bad991 | 6367 | |
44fa5b1e | 6368 | if (NILP (frame)) |
1ae1a37d | 6369 | frame = selected_frame; |
b7826503 | 6370 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6371 | f = XFRAME (frame); |
7ab12479 | 6372 | |
44fa5b1e | 6373 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 6374 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
6375 | data = (struct save_window_data *)vec; |
6376 | ||
949cf20f KS |
6377 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
6378 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 6379 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 6380 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 6381 | data->selected_frame = selected_frame; |
44fa5b1e | 6382 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6383 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6384 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6385 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6386 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6387 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
6388 | XSETINT (data->min_height, window_min_height); |
6389 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
6390 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6391 | data->saved_windows = tem; | |
6392 | for (i = 0; i < n_windows; i++) | |
6393 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6394 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6395 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6396 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6397 | return (tem); |
6398 | } | |
6399 | ||
6400 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6401 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6402 | doc: /* Execute BODY, preserving window sizes and contents. |
6403 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6404 | Restore which buffer appears in which window, where display starts, |
6405 | and the value of point and mark for each window. | |
6406 | Also restore the choice of selected window. | |
6407 | Also restore which buffer is current. | |
6924dda6 MB |
6408 | Does not restore the value of point in current buffer. |
6409 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 6410 | (args) |
7ab12479 JB |
6411 | Lisp_Object args; |
6412 | { | |
6413 | register Lisp_Object val; | |
aed13378 | 6414 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6415 | |
6416 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6417 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6418 | val = Fprogn (args); |
6419 | return unbind_to (count, val); | |
6420 | } | |
5500c422 | 6421 | |
94e16dd5 KS |
6422 | |
6423 | \f | |
6424 | /*********************************************************************** | |
6425 | Window Split Tree | |
6426 | ***********************************************************************/ | |
6427 | ||
6428 | static Lisp_Object | |
c16e1cc3 | 6429 | window_tree (w) |
94e16dd5 KS |
6430 | struct window *w; |
6431 | { | |
6432 | Lisp_Object tail = Qnil; | |
6433 | Lisp_Object result = Qnil; | |
6434 | ||
6435 | while (w) | |
6436 | { | |
6437 | Lisp_Object wn; | |
6438 | ||
6439 | XSETWINDOW (wn, w); | |
6440 | if (!NILP (w->hchild)) | |
6441 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6442 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6443 | else if (!NILP (w->vchild)) |
6444 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6445 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6446 | |
6447 | if (NILP (result)) | |
6448 | { | |
6449 | result = tail = Fcons (wn, Qnil); | |
6450 | } | |
6451 | else | |
6452 | { | |
6453 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6454 | tail = XCDR (tail); | |
6455 | } | |
6456 | ||
6457 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6458 | } | |
6459 | ||
6460 | return result; | |
6461 | } | |
6462 | ||
6463 | ||
6464 | ||
c16e1cc3 | 6465 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6466 | 0, 1, 0, |
c16e1cc3 | 6467 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6468 | |
6469 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6470 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6471 | is the frame's minibuffer window. |
6472 | ||
6473 | If the root window is not split, ROOT is the root window itself. | |
6474 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6475 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6476 | size and position of the subwindows in the split, and the rest of the |
6477 | elements are the subwindows in the split. Each of the subwindows may | |
6478 | again be a window or a list representing a window split, and so on. | |
6479 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6480 | ||
6481 | If FRAME is nil or omitted, return information on the currently | |
6482 | selected frame. */) | |
6483 | (frame) | |
6484 | Lisp_Object frame; | |
6485 | { | |
94e16dd5 KS |
6486 | FRAME_PTR f; |
6487 | ||
6488 | if (NILP (frame)) | |
6489 | frame = selected_frame; | |
6490 | ||
6491 | CHECK_FRAME (frame); | |
6492 | f = XFRAME (frame); | |
6493 | ||
6494 | if (!FRAME_LIVE_P (f)) | |
6495 | return Qnil; | |
6496 | ||
c16e1cc3 | 6497 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6498 | } |
6499 | ||
5500c422 GM |
6500 | \f |
6501 | /*********************************************************************** | |
6502 | Marginal Areas | |
6503 | ***********************************************************************/ | |
6504 | ||
6505 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6506 | 2, 3, 0, |
fdb82f93 | 6507 | doc: /* Set width of marginal areas of window WINDOW. |
e661376d KS |
6508 | If WINDOW is nil, set margins of the currently selected window. |
6509 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6510 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6511 | does the same for the right marginal area. A nil width parameter | |
6512 | means no margin. */) | |
c10ce82e JB |
6513 | (window, left_width, right_width) |
6514 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6515 | { |
6516 | struct window *w = decode_window (window); | |
5500c422 | 6517 | |
c2c3f202 KS |
6518 | /* Translate negative or zero widths to nil. |
6519 | Margins that are too wide have to be checked elsewhere. */ | |
6520 | ||
c10ce82e | 6521 | if (!NILP (left_width)) |
c2c3f202 | 6522 | { |
c10ce82e JB |
6523 | CHECK_NUMBER (left_width); |
6524 | if (XINT (left_width) <= 0) | |
6525 | left_width = Qnil; | |
c2c3f202 | 6526 | } |
5500c422 | 6527 | |
c10ce82e | 6528 | if (!NILP (right_width)) |
c2c3f202 | 6529 | { |
c10ce82e JB |
6530 | CHECK_NUMBER (right_width); |
6531 | if (XINT (right_width) <= 0) | |
6532 | right_width = Qnil; | |
c2c3f202 | 6533 | } |
5500c422 | 6534 | |
c10ce82e JB |
6535 | if (!EQ (w->left_margin_cols, left_width) |
6536 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6537 | { |
c10ce82e JB |
6538 | w->left_margin_cols = left_width; |
6539 | w->right_margin_cols = right_width; | |
949cf20f KS |
6540 | |
6541 | adjust_window_margins (w); | |
6542 | ||
6543 | ++windows_or_buffers_changed; | |
6544 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6545 | } | |
5500c422 | 6546 | |
5500c422 GM |
6547 | return Qnil; |
6548 | } | |
6549 | ||
6550 | ||
6551 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6552 | 0, 1, 0, | |
fdb82f93 PJ |
6553 | doc: /* Get width of marginal areas of window WINDOW. |
6554 | If WINDOW is omitted or nil, use the currently selected window. | |
6555 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6556 | If a marginal area does not exist, its width will be returned | |
6557 | as nil. */) | |
6558 | (window) | |
5500c422 GM |
6559 | Lisp_Object window; |
6560 | { | |
6561 | struct window *w = decode_window (window); | |
949cf20f KS |
6562 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6563 | } | |
6564 | ||
6565 | ||
6566 | \f | |
6567 | /*********************************************************************** | |
6568 | Fringes | |
6569 | ***********************************************************************/ | |
6570 | ||
6571 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6572 | 2, 4, 0, | |
62c2f759 | 6573 | doc: /* Set the fringe widths of window WINDOW. |
62c2f759 LK |
6574 | If WINDOW is nil, set the fringe widths of the currently selected |
6575 | window. | |
e661376d KS |
6576 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6577 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6578 | fringe width. If a fringe width arg is nil, that means to use the | |
6579 | frame's default fringe width. Default fringe widths can be set with | |
6580 | the command `set-fringe-style'. | |
6581 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
62c2f759 LK |
6582 | outside of the display margins. By default, fringes are drawn between |
6583 | display marginal areas and the text area. */) | |
c10ce82e JB |
6584 | (window, left_width, right_width, outside_margins) |
6585 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6586 | { |
6587 | struct window *w = decode_window (window); | |
6588 | ||
c10ce82e JB |
6589 | if (!NILP (left_width)) |
6590 | CHECK_NATNUM (left_width); | |
6591 | if (!NILP (right_width)) | |
6592 | CHECK_NATNUM (right_width); | |
949cf20f | 6593 | |
c10ce82e JB |
6594 | if (!EQ (w->left_fringe_width, left_width) |
6595 | || !EQ (w->right_fringe_width, right_width) | |
949cf20f KS |
6596 | || !EQ (w->fringes_outside_margins, outside_margins)) |
6597 | { | |
c10ce82e JB |
6598 | w->left_fringe_width = left_width; |
6599 | w->right_fringe_width = right_width; | |
949cf20f KS |
6600 | w->fringes_outside_margins = outside_margins; |
6601 | ||
6602 | adjust_window_margins (w); | |
6603 | ||
6604 | clear_glyph_matrix (w->current_matrix); | |
6605 | w->window_end_valid = Qnil; | |
6606 | ||
6607 | ++windows_or_buffers_changed; | |
6608 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6609 | } | |
6610 | ||
6611 | return Qnil; | |
6612 | } | |
6613 | ||
6614 | ||
6615 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6616 | 0, 1, 0, | |
6617 | doc: /* Get width of fringes of window WINDOW. | |
6618 | If WINDOW is omitted or nil, use the currently selected window. | |
467e281a | 6619 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6620 | (window) |
6621 | Lisp_Object window; | |
6622 | { | |
6623 | struct window *w = decode_window (window); | |
6624 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), | |
6625 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6626 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? | |
6627 | Qt : Qnil), Qnil))); | |
6628 | } | |
6629 | ||
6630 | ||
6631 | \f | |
6632 | /*********************************************************************** | |
6633 | Scroll bars | |
6634 | ***********************************************************************/ | |
6635 | ||
6636 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6637 | 2, 4, 0, | |
6638 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6639 | If window is nil, set scroll bars of the currently selected window. | |
6640 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6641 | this is automatically adjusted to a multiple of the frame column width. | |
6642 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6643 | bar: left, right, or nil. | |
2f71b5ea | 6644 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6645 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6646 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6647 | (window, width, vertical_type, horizontal_type) |
6648 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6649 | { |
6650 | struct window *w = decode_window (window); | |
6651 | ||
6652 | if (!NILP (width)) | |
0f8fe9a2 SM |
6653 | { |
6654 | CHECK_NATNUM (width); | |
949cf20f | 6655 | |
0f8fe9a2 SM |
6656 | if (XINT (width) == 0) |
6657 | vertical_type = Qnil; | |
6658 | } | |
949cf20f | 6659 | |
2f71b5ea | 6660 | if (!(EQ (vertical_type, Qnil) |
0cc1039f | 6661 | || EQ (vertical_type, Qleft) |
2f71b5ea MY |
6662 | || EQ (vertical_type, Qright) |
6663 | || EQ (vertical_type, Qt))) | |
6664 | error ("Invalid type of vertical scroll bar"); | |
6665 | ||
949cf20f KS |
6666 | if (!EQ (w->scroll_bar_width, width) |
6667 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6668 | { | |
6669 | w->scroll_bar_width = width; | |
6670 | w->vertical_scroll_bar_type = vertical_type; | |
6671 | ||
6672 | adjust_window_margins (w); | |
6673 | ||
6674 | clear_glyph_matrix (w->current_matrix); | |
6675 | w->window_end_valid = Qnil; | |
6676 | ||
6677 | ++windows_or_buffers_changed; | |
6678 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6679 | } | |
6680 | ||
6681 | return Qnil; | |
6682 | } | |
6683 | ||
6684 | ||
6685 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6686 | 0, 1, 0, | |
6687 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6688 | If WINDOW is omitted or nil, use the currently selected window. | |
12853c58 KS |
6689 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6690 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6691 | value. */) | |
949cf20f KS |
6692 | (window) |
6693 | Lisp_Object window; | |
6694 | { | |
6695 | struct window *w = decode_window (window); | |
6696 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6697 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6698 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6699 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6700 | Fcons (w->vertical_scroll_bar_type, | |
6701 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6702 | } |
6703 | ||
6704 | ||
7ab12479 | 6705 | \f |
5500c422 GM |
6706 | /*********************************************************************** |
6707 | Smooth scrolling | |
6708 | ***********************************************************************/ | |
6709 | ||
0cc1039f | 6710 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6711 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6712 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6713 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6714 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6715 | (window, pixels_p) |
6716 | Lisp_Object window, pixels_p; | |
5500c422 | 6717 | { |
47004952 | 6718 | Lisp_Object result; |
5500c422 GM |
6719 | struct frame *f; |
6720 | struct window *w; | |
177c0ea7 | 6721 | |
5500c422 GM |
6722 | if (NILP (window)) |
6723 | window = selected_window; | |
47004952 | 6724 | else |
b7826503 | 6725 | CHECK_WINDOW (window); |
5500c422 GM |
6726 | w = XWINDOW (window); |
6727 | f = XFRAME (w->frame); | |
177c0ea7 | 6728 | |
5500c422 | 6729 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6730 | result = (NILP (pixels_p) |
6731 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6732 | : make_number (-w->vscroll)); | |
5500c422 | 6733 | else |
47004952 GM |
6734 | result = make_number (0); |
6735 | return result; | |
5500c422 GM |
6736 | } |
6737 | ||
6738 | ||
6739 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6740 | 2, 3, 0, |
fdb82f93 | 6741 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6742 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6743 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6744 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6745 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6746 | corresponds to an integral number of pixels. The return value is the | |
6747 | result of this rounding. | |
6748 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6749 | (window, vscroll, pixels_p) |
6750 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6751 | { |
6752 | struct window *w; | |
6753 | struct frame *f; | |
177c0ea7 | 6754 | |
5500c422 GM |
6755 | if (NILP (window)) |
6756 | window = selected_window; | |
47004952 | 6757 | else |
b7826503 PJ |
6758 | CHECK_WINDOW (window); |
6759 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6760 | |
5500c422 GM |
6761 | w = XWINDOW (window); |
6762 | f = XFRAME (w->frame); | |
6763 | ||
6764 | if (FRAME_WINDOW_P (f)) | |
6765 | { | |
6766 | int old_dy = w->vscroll; | |
177c0ea7 | 6767 | |
0cc1039f KS |
6768 | w->vscroll = - (NILP (pixels_p) |
6769 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6770 | : XFLOATINT (vscroll)); | |
47004952 | 6771 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6772 | |
e56263e5 KS |
6773 | if (w->vscroll != old_dy) |
6774 | { | |
6775 | /* Adjust glyph matrix of the frame if the virtual display | |
6776 | area becomes larger than before. */ | |
6777 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6778 | adjust_glyphs (f); | |
177c0ea7 | 6779 | |
e56263e5 KS |
6780 | /* Prevent redisplay shortcuts. */ |
6781 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6782 | } | |
5500c422 | 6783 | } |
177c0ea7 | 6784 | |
0cc1039f | 6785 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6786 | } |
177c0ea7 | 6787 | |
7bbb5782 GM |
6788 | \f |
6789 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6790 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6791 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6792 | |
6793 | void | |
f95464e4 | 6794 | foreach_window (f, fn, user_data) |
7bbb5782 | 6795 | struct frame *f; |
f95464e4 GM |
6796 | int (* fn) P_ ((struct window *, void *)); |
6797 | void *user_data; | |
7bbb5782 | 6798 | { |
f95464e4 | 6799 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); |
7bbb5782 GM |
6800 | } |
6801 | ||
6802 | ||
6803 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6804 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6805 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6806 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6807 | |
67492200 | 6808 | static int |
f95464e4 | 6809 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 6810 | struct window *w; |
f95464e4 GM |
6811 | int (* fn) P_ ((struct window *, void *)); |
6812 | void *user_data; | |
7bbb5782 | 6813 | { |
67492200 | 6814 | int cont; |
177c0ea7 | 6815 | |
67492200 | 6816 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6817 | { |
6818 | if (!NILP (w->hchild)) | |
f95464e4 | 6819 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6820 | else if (!NILP (w->vchild)) |
f95464e4 | 6821 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6822 | else |
0f532a9a | 6823 | cont = fn (w, user_data); |
177c0ea7 | 6824 | |
7bbb5782 GM |
6825 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6826 | } | |
67492200 GM |
6827 | |
6828 | return cont; | |
7bbb5782 GM |
6829 | } |
6830 | ||
6831 | ||
6d194a45 | 6832 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6833 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6834 | the window start. */ |
6835 | ||
67492200 | 6836 | static int |
7bbb5782 GM |
6837 | freeze_window_start (w, freeze_p) |
6838 | struct window *w; | |
f95464e4 | 6839 | void *freeze_p; |
7bbb5782 GM |
6840 | { |
6841 | if (w == XWINDOW (selected_window) | |
6842 | || MINI_WINDOW_P (w) | |
6843 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 6844 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 6845 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 6846 | freeze_p = NULL; |
177c0ea7 | 6847 | |
f95464e4 | 6848 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6849 | return 1; |
7bbb5782 GM |
6850 | } |
6851 | ||
6852 | ||
6853 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6854 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6855 | means freeze the window start. */ | |
6856 | ||
6857 | void | |
6858 | freeze_window_starts (f, freeze_p) | |
6859 | struct frame *f; | |
6860 | int freeze_p; | |
6861 | { | |
cbccabec | 6862 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6863 | } |
5500c422 GM |
6864 | |
6865 | \f | |
6866 | /*********************************************************************** | |
6867 | Initialization | |
6868 | ***********************************************************************/ | |
6869 | ||
cbff28e8 RS |
6870 | /* Return 1 if window configurations C1 and C2 |
6871 | describe the same state of affairs. This is used by Fequal. */ | |
6872 | ||
6873 | int | |
2f8274be | 6874 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 6875 | Lisp_Object c1, c2; |
2f8274be | 6876 | int ignore_positions; |
cbff28e8 RS |
6877 | { |
6878 | register struct save_window_data *d1, *d2; | |
6879 | struct Lisp_Vector *sw1, *sw2; | |
6880 | int i; | |
6881 | ||
4d3edcb4 GM |
6882 | if (!WINDOW_CONFIGURATIONP (c1)) |
6883 | wrong_type_argument (Qwindow_configuration_p, c1); | |
6884 | if (!WINDOW_CONFIGURATIONP (c2)) | |
6885 | wrong_type_argument (Qwindow_configuration_p, c2); | |
177c0ea7 | 6886 | |
cbff28e8 RS |
6887 | d1 = (struct save_window_data *) XVECTOR (c1); |
6888 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6889 | sw1 = XVECTOR (d1->saved_windows); | |
6890 | sw2 = XVECTOR (d2->saved_windows); | |
6891 | ||
949cf20f | 6892 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 6893 | return 0; |
949cf20f | 6894 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
6895 | return 0; |
6896 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
6897 | return 0; | |
6898 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6899 | return 0; | |
6900 | /* Don't compare the current_window field directly. | |
6901 | Instead see w1_is_current and w2_is_current, below. */ | |
6902 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6903 | return 0; | |
2f8274be | 6904 | if (! ignore_positions) |
3f49fddc KS |
6905 | { |
6906 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6907 | return 0; | |
6908 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6909 | return 0; | |
6910 | } | |
cbff28e8 RS |
6911 | /* Don't compare the root_window field. |
6912 | We don't require the two configurations | |
6913 | to use the same window object, | |
6914 | and the two root windows must be equivalent | |
6915 | if everything else compares equal. */ | |
6916 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6917 | return 0; | |
6918 | if (! EQ (d1->min_width, d2->min_width)) | |
6919 | return 0; | |
6920 | if (! EQ (d1->min_height, d2->min_height)) | |
6921 | return 0; | |
6922 | ||
6923 | /* Verify that the two confis have the same number of windows. */ | |
6924 | if (sw1->size != sw2->size) | |
6925 | return 0; | |
6926 | ||
6927 | for (i = 0; i < sw1->size; i++) | |
6928 | { | |
6929 | struct saved_window *p1, *p2; | |
6930 | int w1_is_current, w2_is_current; | |
6931 | ||
6932 | p1 = SAVED_WINDOW_N (sw1, i); | |
6933 | p2 = SAVED_WINDOW_N (sw2, i); | |
6934 | ||
6935 | /* Verify that the current windows in the two | |
6936 | configurations correspond to each other. */ | |
6937 | w1_is_current = EQ (d1->current_window, p1->window); | |
6938 | w2_is_current = EQ (d2->current_window, p2->window); | |
6939 | ||
6940 | if (w1_is_current != w2_is_current) | |
6941 | return 0; | |
6942 | ||
6943 | /* Verify that the corresponding windows do match. */ | |
6944 | if (! EQ (p1->buffer, p2->buffer)) | |
6945 | return 0; | |
949cf20f | 6946 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6947 | return 0; |
949cf20f | 6948 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6949 | return 0; |
949cf20f | 6950 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6951 | return 0; |
949cf20f | 6952 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6953 | return 0; |
cbff28e8 RS |
6954 | if (! EQ (p1->display_table, p2->display_table)) |
6955 | return 0; | |
6956 | if (! EQ (p1->parent, p2->parent)) | |
6957 | return 0; | |
6958 | if (! EQ (p1->prev, p2->prev)) | |
6959 | return 0; | |
2f8274be RS |
6960 | if (! ignore_positions) |
6961 | { | |
6962 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6963 | return 0; | |
ea68264b GM |
6964 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6965 | return 0; | |
2f8274be RS |
6966 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6967 | return 0; | |
6968 | if (NILP (Fequal (p1->start, p2->start))) | |
6969 | return 0; | |
6970 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
6971 | return 0; | |
6972 | if (NILP (Fequal (p1->mark, p2->mark))) | |
6973 | return 0; | |
6974 | } | |
949cf20f KS |
6975 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
6976 | return 0; | |
6977 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
6978 | return 0; | |
6979 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
6980 | return 0; | |
6981 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
6982 | return 0; | |
6983 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
6984 | return 0; | |
6985 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
6986 | return 0; | |
6987 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
6988 | return 0; | |
cbff28e8 RS |
6989 | } |
6990 | ||
6991 | return 1; | |
6992 | } | |
2f8274be RS |
6993 | |
6994 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6995 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6996 | doc: /* Compare two window configurations as regards the structure of windows. |
6997 | This function ignores details such as the values of point and mark | |
6998 | and scrolling positions. */) | |
6999 | (x, y) | |
2f8274be RS |
7000 | Lisp_Object x, y; |
7001 | { | |
7002 | if (compare_window_configurations (x, y, 1)) | |
7003 | return Qt; | |
7004 | return Qnil; | |
7005 | } | |
cbff28e8 | 7006 | \f |
dfcf069d | 7007 | void |
7ab12479 JB |
7008 | init_window_once () |
7009 | { | |
1ae1a37d GM |
7010 | struct frame *f = make_terminal_frame (); |
7011 | XSETFRAME (selected_frame, f); | |
7012 | Vterminal_frame = selected_frame; | |
7013 | minibuf_window = f->minibuffer_window; | |
7014 | selected_window = f->selected_window; | |
7015 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7016 | |
7017 | window_initialized = 1; | |
7ab12479 JB |
7018 | } |
7019 | ||
67492200 GM |
7020 | void |
7021 | init_window () | |
7022 | { | |
7023 | Vwindow_list = Qnil; | |
7024 | } | |
7025 | ||
dfcf069d | 7026 | void |
7ab12479 JB |
7027 | syms_of_window () |
7028 | { | |
c525d842 CY |
7029 | Qscroll_up = intern ("scroll-up"); |
7030 | staticpro (&Qscroll_up); | |
7031 | ||
7032 | Qscroll_down = intern ("scroll-down"); | |
7033 | staticpro (&Qscroll_down); | |
7034 | ||
8a37516b GM |
7035 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7036 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7037 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7038 | |
543f5fb1 RS |
7039 | staticpro (&Qwindow_configuration_change_hook); |
7040 | Qwindow_configuration_change_hook | |
7041 | = intern ("window-configuration-change-hook"); | |
7042 | ||
7ab12479 JB |
7043 | Qwindowp = intern ("windowp"); |
7044 | staticpro (&Qwindowp); | |
7045 | ||
3f8ab7bd RS |
7046 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7047 | staticpro (&Qwindow_configuration_p); | |
7048 | ||
806b4d9b JB |
7049 | Qwindow_live_p = intern ("window-live-p"); |
7050 | staticpro (&Qwindow_live_p); | |
605be8af | 7051 | |
2cccc823 | 7052 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7053 | staticpro (&Qtemp_buffer_show_hook); |
7054 | ||
67492200 | 7055 | staticpro (&Vwindow_list); |
8bfb170b KS |
7056 | |
7057 | minibuf_selected_window = Qnil; | |
3dbab091 | 7058 | staticpro (&minibuf_selected_window); |
67492200 | 7059 | |
66fe93d1 | 7060 | window_scroll_pixel_based_preserve_y = -1; |
66d43aea | 7061 | |
7ab12479 | 7062 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7063 | doc: /* Non-nil means call as function to display a help buffer. |
7064 | The function is called with one argument, the buffer to be displayed. | |
7065 | Used by `with-output-to-temp-buffer'. | |
7066 | If this function is used, then it must do the entire job of showing | |
7067 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7068 | Vtemp_buffer_show_function = Qnil; |
7069 | ||
7070 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
7071 | doc: /* If non-nil, function to call to handle `display-buffer'. |
7072 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
7073 | that the currently selected window is not acceptable. |
7074 | It should choose or create a window, display the specified buffer in it, | |
7075 | and return the window. | |
fdb82f93 PJ |
7076 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
7077 | work using this function. */); | |
7ab12479 JB |
7078 | Vdisplay_buffer_function = Qnil; |
7079 | ||
6529ed87 | 7080 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
7081 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
7082 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
7083 | Veven_window_heights = Qt; |
7084 | ||
7ab12479 | 7085 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7086 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7087 | Vminibuf_scroll_window = Qnil; |
7088 | ||
cc91894c | 7089 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7090 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7091 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7092 | is displayed in the `mode-line' face. */); | |
7093 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7094 | |
7ab12479 | 7095 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7096 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7097 | Vother_window_scroll_buffer = Qnil; |
7098 | ||
44fa5b1e | 7099 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 7100 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 7101 | pop_up_frames = 0; |
7ab12479 | 7102 | |
e56263e5 KS |
7103 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7104 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7105 | auto_window_vscroll_p = 1; | |
7106 | ||
9c3da604 | 7107 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
7108 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
7109 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
7110 | display_buffer_reuse_frames = 0; |
7111 | ||
44fa5b1e | 7112 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
7113 | doc: /* Function to call to handle automatic new frame creation. |
7114 | It is called with no arguments and should return a newly created frame. | |
7115 | ||
7116 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
7117 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 7118 | Vpop_up_frame_function = Qnil; |
7ab12479 | 7119 | |
a90712c2 | 7120 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 7121 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
7122 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
7123 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
7124 | using `special-display-function'. See also `special-display-regexps'. |
7125 | ||
7126 | An element of the list can be a list instead of just a string. | |
7127 | There are two ways to use a list as an element: | |
7128 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7129 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7130 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7131 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7132 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
7133 | All this is done by the function found in `special-display-function'. |
7134 | ||
499858c5 RS |
7135 | If the specified frame parameters include (same-buffer . t), the |
7136 | buffer is displayed in the currently selected window. Otherwise, if | |
7137 | they include (same-frame . t), the buffer is displayed in a new window | |
7138 | in the currently selected frame. | |
7139 | ||
fdb82f93 PJ |
7140 | If this variable appears \"not to work\", because you add a name to it |
7141 | but that buffer still appears in the selected window, look at the | |
7142 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7143 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7144 | Vspecial_display_buffer_names = Qnil; |
7145 | ||
7146 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 7147 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
7148 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
7149 | if any regexp in this list matches the buffer name, it makes a | |
7150 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
7151 | |
7152 | An element of the list can be a list instead of just a string. | |
7153 | There are two ways to use a list as an element: | |
7154 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7155 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7156 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7157 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7158 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
7159 | All this is done by the function found in `special-display-function'. |
7160 | ||
499858c5 RS |
7161 | If the specified frame parameters include (same-buffer . t), the |
7162 | buffer is displayed in the currently selected window. Otherwise, if | |
7163 | they include (same-frame . t), the buffer is displayed in a new window | |
7164 | in the currently selected frame. | |
7165 | ||
fdb82f93 PJ |
7166 | If this variable appears \"not to work\", because you add a regexp to it |
7167 | but the matching buffers still appear in the selected window, look at the | |
7168 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7169 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7170 | Vspecial_display_regexps = Qnil; |
7171 | ||
7172 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
7173 | doc: /* Function to call to make a new frame for a special buffer. |
7174 | It is called with two arguments, the buffer and optional buffer specific | |
7175 | data, and should return a window displaying that buffer. | |
a5731348 SM |
7176 | The default value normally makes a separate frame for the buffer, |
7177 | using `special-display-frame-alist' to specify the frame parameters. | |
7178 | But if the buffer specific data includes (same-buffer . t) then the | |
7179 | buffer is displayed in the current selected window. | |
7180 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
7181 | a new window in the currently selected frame. | |
7182 | ||
7183 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 7184 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
7185 | Vspecial_display_function = Qnil; |
7186 | ||
855d8627 | 7187 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
7188 | doc: /* *List of buffer names that should appear in the selected window. |
7189 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
7190 | switches to it in the selected window, rather than making it appear | |
7191 | in some other window. | |
7192 | ||
7193 | An element of the list can be a cons cell instead of just a string. | |
7194 | Then the car must be a string, which specifies the buffer name. | |
7195 | This is for compatibility with `special-display-buffer-names'; | |
7196 | the cdr of the cons cell is ignored. | |
7197 | ||
7198 | See also `same-window-regexps'. */); | |
855d8627 RS |
7199 | Vsame_window_buffer_names = Qnil; |
7200 | ||
7201 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7202 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7203 | If a buffer name matches one of these regexps, then displaying it | |
7204 | using `display-buffer' or `pop-to-buffer' switches to it | |
7205 | in the selected window, rather than making it appear in some other window. | |
7206 | ||
7207 | An element of the list can be a cons cell instead of just a string. | |
7208 | Then the car must be a string, which specifies the buffer name. | |
7209 | This is for compatibility with `special-display-buffer-names'; | |
7210 | the cdr of the cons cell is ignored. | |
7211 | ||
7212 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7213 | Vsame_window_regexps = Qnil; |
7214 | ||
7ab12479 | 7215 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7216 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7217 | pop_up_windows = 1; |
7218 | ||
7219 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7220 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7221 | next_screen_context_lines = 2; |
7222 | ||
7223 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
876e2665 | 7224 | doc: /* *A window must be at least this tall to be eligible for splitting by `display-buffer'. |
fdb82f93 | 7225 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7226 | split_height_threshold = 500; |
7227 | ||
7228 | DEFVAR_INT ("window-min-height", &window_min_height, | |
fdb82f93 | 7229 | doc: /* *Delete any window less than this tall (including its mode line). */); |
7ab12479 JB |
7230 | window_min_height = 4; |
7231 | ||
7232 | DEFVAR_INT ("window-min-width", &window_min_width, | |
fdb82f93 | 7233 | doc: /* *Delete any window less than this wide. */); |
7ab12479 JB |
7234 | window_min_width = 10; |
7235 | ||
5500c422 GM |
7236 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7237 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7238 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7239 | A value of nil means point does not keep its screen position except | |
7240 | at the scroll margin or window boundary respectively. | |
7241 | A value of t means point keeps its screen position if the scroll | |
7242 | command moved it vertically out of the window, e.g. when scrolling | |
7243 | by full screens. | |
7244 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7245 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7246 | |
543f5fb1 RS |
7247 | DEFVAR_LISP ("window-configuration-change-hook", |
7248 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
7249 | doc: /* Functions to call when window configuration changes. |
7250 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
7251 | Vwindow_configuration_change_hook = Qnil; |
7252 | ||
7ab12479 JB |
7253 | defsubr (&Sselected_window); |
7254 | defsubr (&Sminibuffer_window); | |
7255 | defsubr (&Swindow_minibuffer_p); | |
7256 | defsubr (&Swindowp); | |
806b4d9b | 7257 | defsubr (&Swindow_live_p); |
7ab12479 JB |
7258 | defsubr (&Spos_visible_in_window_p); |
7259 | defsubr (&Swindow_buffer); | |
7260 | defsubr (&Swindow_height); | |
7261 | defsubr (&Swindow_width); | |
7262 | defsubr (&Swindow_hscroll); | |
7263 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7264 | defsubr (&Swindow_redisplay_end_trigger); |
7265 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7266 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7267 | defsubr (&Swindow_pixel_edges); |
7268 | defsubr (&Swindow_inside_edges); | |
7269 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7270 | defsubr (&Scoordinates_in_window_p); |
7271 | defsubr (&Swindow_at); | |
7ab12479 JB |
7272 | defsubr (&Swindow_point); |
7273 | defsubr (&Swindow_start); | |
7274 | defsubr (&Swindow_end); | |
7275 | defsubr (&Sset_window_point); | |
7276 | defsubr (&Sset_window_start); | |
7277 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7278 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7279 | defsubr (&Swindow_display_table); |
7280 | defsubr (&Sset_window_display_table); | |
7281 | defsubr (&Snext_window); | |
7282 | defsubr (&Sprevious_window); | |
7283 | defsubr (&Sother_window); | |
7284 | defsubr (&Sget_lru_window); | |
7285 | defsubr (&Sget_largest_window); | |
7286 | defsubr (&Sget_buffer_window); | |
7287 | defsubr (&Sdelete_other_windows); | |
7288 | defsubr (&Sdelete_windows_on); | |
7289 | defsubr (&Sreplace_buffer_in_windows); | |
7290 | defsubr (&Sdelete_window); | |
7291 | defsubr (&Sset_window_buffer); | |
7292 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7293 | defsubr (&Sspecial_display_p); |
7294 | defsubr (&Ssame_window_p); | |
7ab12479 | 7295 | defsubr (&Sdisplay_buffer); |
e661376d | 7296 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7297 | defsubr (&Ssplit_window); |
7298 | defsubr (&Senlarge_window); | |
7299 | defsubr (&Sshrink_window); | |
0d384044 | 7300 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7301 | defsubr (&Sscroll_up); |
7302 | defsubr (&Sscroll_down); | |
7303 | defsubr (&Sscroll_left); | |
7304 | defsubr (&Sscroll_right); | |
ccd0664b | 7305 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7306 | defsubr (&Sscroll_other_window); |
fa832261 | 7307 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7308 | defsubr (&Srecenter); |
81fe0836 | 7309 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7310 | defsubr (&Smove_to_window_line); |
7311 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7312 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7313 | defsubr (&Sset_window_configuration); |
7314 | defsubr (&Scurrent_window_configuration); | |
7315 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7316 | defsubr (&Swindow_tree); |
5500c422 GM |
7317 | defsubr (&Sset_window_margins); |
7318 | defsubr (&Swindow_margins); | |
949cf20f KS |
7319 | defsubr (&Sset_window_fringes); |
7320 | defsubr (&Swindow_fringes); | |
7321 | defsubr (&Sset_window_scroll_bars); | |
7322 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7323 | defsubr (&Swindow_vscroll); |
7324 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7325 | defsubr (&Scompare_window_configurations); |
67492200 | 7326 | defsubr (&Swindow_list); |
7ab12479 JB |
7327 | } |
7328 | ||
dfcf069d | 7329 | void |
7ab12479 JB |
7330 | keys_of_window () |
7331 | { | |
7332 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7333 | initial_define_key (control_x_map, '2', "split-window"); | |
7334 | initial_define_key (control_x_map, '0', "delete-window"); | |
7335 | initial_define_key (control_x_map, 'o', "other-window"); | |
7336 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7337 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7338 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7339 | ||
7340 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7341 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7342 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7343 | ||
7344 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7345 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7346 | } | |
ab5796a9 MB |
7347 | |
7348 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
7349 | (do not change this comment) */ |