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