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