Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
4a2f9c6a | 3 | Copyright (C) 1985,86,87,93,94,95,96,97,1998 Free Software Foundation, Inc. |
7ab12479 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1113d9db | 9 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 21 | |
18160b98 | 22 | #include <config.h> |
7ab12479 JB |
23 | #include "lisp.h" |
24 | #include "buffer.h" | |
44fa5b1e | 25 | #include "frame.h" |
7ab12479 JB |
26 | #include "window.h" |
27 | #include "commands.h" | |
28 | #include "indent.h" | |
29 | #include "termchar.h" | |
30 | #include "disptab.h" | |
f8026fd8 | 31 | #include "keyboard.h" |
dfcf069d | 32 | #include "dispextern.h" |
5500c422 GM |
33 | #include "blockinput.h" |
34 | #include "intervals.h" | |
35 | ||
6d55d620 | 36 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 37 | #include "xterm.h" |
5500c422 | 38 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
39 | #ifdef WINDOWSNT |
40 | #include "w32term.h" | |
41 | #endif | |
1e3c8885 EZ |
42 | #ifdef MSDOS |
43 | #include "msdos.h" | |
44 | #endif | |
5500c422 GM |
45 | |
46 | #ifndef max | |
47 | #define max(a, b) ((a) < (b) ? (b) : (a)) | |
dfcf069d | 48 | #endif |
7ab12479 | 49 | |
5500c422 | 50 | |
3f8ab7bd | 51 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
8a37516b | 52 | Lisp_Object Qwindow_size_fixed, Qleft_bitmap_area, Qright_bitmap_area; |
233a4a2c | 53 | extern Lisp_Object Qheight, Qwidth; |
7ab12479 | 54 | |
5e14b1fc | 55 | static struct window *decode_window P_ ((Lisp_Object)); |
b7354ddf | 56 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
5500c422 GM |
57 | static int count_windows P_ ((struct window *)); |
58 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
59 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
60 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
61 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 62 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 63 | static int window_min_size P_ ((struct window *, int, int, int *)); |
233a4a2c | 64 | static void size_window P_ ((Lisp_Object, int, int, int)); |
67492200 GM |
65 | static int foreach_window_1 P_ ((struct window *, int (*fn) (), int, int, |
66 | int, int, int, int, int, int, int)); | |
67 | static int freeze_window_start P_ ((struct window *, int)); | |
f984d4fc | 68 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
86c8e823 | 69 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 70 | static Lisp_Object window_list P_ ((void)); |
212116d6 | 71 | static int add_window_to_list P_ ((struct window *, Lisp_Object *)); |
67492200 GM |
72 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
73 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, | |
74 | Lisp_Object, int)); | |
75 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
76 | Lisp_Object *)); | |
77 | ||
5500c422 | 78 | |
b7354ddf | 79 | |
7ab12479 JB |
80 | /* This is the window in which the terminal's cursor should |
81 | be left when nothing is being done with it. This must | |
82 | always be a leaf window, and its buffer is selected by | |
83 | the top level editing loop at the end of each command. | |
84 | ||
85 | This value is always the same as | |
44fa5b1e | 86 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
87 | |
88 | Lisp_Object selected_window; | |
89 | ||
67492200 GM |
90 | /* A list of all windows for use by next_window and Fwindow_list. |
91 | Functions creating or deleting windows should invalidate this cache | |
92 | by setting it to nil. */ | |
93 | ||
94 | Lisp_Object Vwindow_list; | |
95 | ||
5500c422 GM |
96 | /* The mini-buffer window of the selected frame. |
97 | Note that you cannot test for mini-bufferness of an arbitrary window | |
98 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 99 | the selected window. */ |
5500c422 | 100 | |
7ab12479 JB |
101 | Lisp_Object minibuf_window; |
102 | ||
103 | /* Non-nil means it is the window for C-M-v to scroll | |
5500c422 GM |
104 | when the mini-buffer is selected. */ |
105 | ||
7ab12479 JB |
106 | Lisp_Object Vminibuf_scroll_window; |
107 | ||
108 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 109 | |
7ab12479 JB |
110 | Lisp_Object Vother_window_scroll_buffer; |
111 | ||
7ab12479 | 112 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 113 | |
7ab12479 JB |
114 | Lisp_Object Vtemp_buffer_show_function; |
115 | ||
116 | /* If a window gets smaller than either of these, it is removed. */ | |
5500c422 | 117 | |
7ab12479 JB |
118 | int window_min_height; |
119 | int window_min_width; | |
120 | ||
121 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 122 | |
7ab12479 JB |
123 | int pop_up_windows; |
124 | ||
44fa5b1e | 125 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 126 | |
44fa5b1e | 127 | int pop_up_frames; |
7ab12479 JB |
128 | |
129 | /* Non-nil means use this function instead of default */ | |
5500c422 | 130 | |
44fa5b1e | 131 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
132 | |
133 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 134 | |
7ab12479 JB |
135 | Lisp_Object Vdisplay_buffer_function; |
136 | ||
a90712c2 | 137 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 138 | |
a90712c2 RS |
139 | Lisp_Object Vspecial_display_buffer_names; |
140 | ||
141 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 142 | |
a90712c2 RS |
143 | Lisp_Object Vspecial_display_regexps; |
144 | ||
145 | /* Function to pop up a special frame. */ | |
5500c422 | 146 | |
a90712c2 RS |
147 | Lisp_Object Vspecial_display_function; |
148 | ||
855d8627 | 149 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 150 | |
855d8627 RS |
151 | Lisp_Object Vsame_window_buffer_names; |
152 | ||
153 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 154 | |
855d8627 RS |
155 | Lisp_Object Vsame_window_regexps; |
156 | ||
a58ec57d | 157 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 158 | |
a58ec57d RS |
159 | Lisp_Object Qtemp_buffer_show_hook; |
160 | ||
37962e60 | 161 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 162 | if that window is more than this high. */ |
5500c422 | 163 | |
7ab12479 JB |
164 | int split_height_threshold; |
165 | ||
166 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 167 | |
7ab12479 JB |
168 | int next_screen_context_lines; |
169 | ||
170 | /* Incremented for each window created. */ | |
5500c422 | 171 | |
7ab12479 JB |
172 | static int sequence_number; |
173 | ||
5b03d3c0 | 174 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 175 | |
5b03d3c0 RS |
176 | static int window_initialized; |
177 | ||
543f5fb1 | 178 | /* Hook to run when window config changes. */ |
5500c422 | 179 | |
543f5fb1 RS |
180 | Lisp_Object Qwindow_configuration_change_hook; |
181 | Lisp_Object Vwindow_configuration_change_hook; | |
182 | ||
9317a85d RS |
183 | /* Nonzero means scroll commands try to put point |
184 | at the same screen height as previously. */ | |
9317a85d | 185 | |
5500c422 GM |
186 | Lisp_Object Vscroll_preserve_screen_position; |
187 | ||
188 | #if 0 /* This isn't used anywhere. */ | |
91a78190 | 189 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 190 | static int inhibit_frame_unsplittable; |
5500c422 | 191 | #endif /* 0 */ |
7d601aaa | 192 | |
7ab12479 | 193 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 | 194 | |
9317a85d RS |
195 | extern int scroll_margin; |
196 | ||
dba06815 | 197 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
198 | \f |
199 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
200 | "Returns t if OBJECT is a window.") |
201 | (object) | |
202 | Lisp_Object object; | |
7ab12479 | 203 | { |
413430c5 | 204 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
205 | } |
206 | ||
806b4d9b | 207 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
208 | "Returns t if OBJECT is a window which is currently visible.") |
209 | (object) | |
210 | Lisp_Object object; | |
605be8af | 211 | { |
413430c5 | 212 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
213 | } |
214 | ||
7ab12479 JB |
215 | Lisp_Object |
216 | make_window () | |
217 | { | |
cffec418 | 218 | Lisp_Object val; |
7ab12479 | 219 | register struct window *p; |
cffec418 KH |
220 | register struct Lisp_Vector *vec; |
221 | int i; | |
222 | ||
223 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
224 | for (i = 0; i < VECSIZE (struct window); i++) | |
225 | vec->contents[i] = Qnil; | |
226 | vec->size = VECSIZE (struct window); | |
5500c422 | 227 | p = (struct window *) vec; |
d834a2e9 KH |
228 | XSETFASTINT (p->sequence_number, ++sequence_number); |
229 | XSETFASTINT (p->left, 0); | |
230 | XSETFASTINT (p->top, 0); | |
231 | XSETFASTINT (p->height, 0); | |
232 | XSETFASTINT (p->width, 0); | |
233 | XSETFASTINT (p->hscroll, 0); | |
f984d4fc | 234 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
235 | p->start = Fmake_marker (); |
236 | p->pointm = Fmake_marker (); | |
d834a2e9 | 237 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 238 | p->frame = Qnil; |
7ab12479 JB |
239 | p->display_table = Qnil; |
240 | p->dedicated = Qnil; | |
5500c422 GM |
241 | p->pseudo_window_p = 0; |
242 | bzero (&p->cursor, sizeof (p->cursor)); | |
243 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
244 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
245 | p->desired_matrix = p->current_matrix = 0; | |
246 | p->phys_cursor_type = -1; | |
247 | p->must_be_updated_p = 0; | |
248 | XSETFASTINT (p->window_end_vpos, 0); | |
249 | XSETFASTINT (p->window_end_pos, 0); | |
250 | p->window_end_valid = Qnil; | |
251 | p->vscroll = 0; | |
cffec418 | 252 | XSETWINDOW (val, p); |
5500c422 | 253 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 254 | p->frozen_window_start_p = 0; |
67492200 GM |
255 | |
256 | Vwindow_list = Qnil; | |
7ab12479 JB |
257 | return val; |
258 | } | |
259 | ||
260 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
261 | "Return the window that the cursor now appears in and commands apply to.") | |
262 | () | |
263 | { | |
264 | return selected_window; | |
265 | } | |
266 | ||
83762ba4 JB |
267 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
268 | "Return the window used now for minibuffers.\n\ | |
269 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
270 | used by that frame.") | |
271 | (frame) | |
272 | Lisp_Object frame; | |
7ab12479 | 273 | { |
83762ba4 | 274 | if (NILP (frame)) |
1ae1a37d GM |
275 | frame = selected_frame; |
276 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 | 277 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
278 | } |
279 | ||
605be8af | 280 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
281 | "Returns non-nil if WINDOW is a minibuffer window.") |
282 | (window) | |
283 | Lisp_Object window; | |
284 | { | |
285 | struct window *w = decode_window (window); | |
286 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
287 | } | |
288 | ||
289 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
290 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 291 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
292 | Returns nil if that position is scrolled vertically out of view.\n\ |
293 | POS defaults to point; WINDOW, to the selected window.") | |
294 | (pos, window) | |
295 | Lisp_Object pos, window; | |
296 | { | |
297 | register struct window *w; | |
7ab12479 JB |
298 | register int posint; |
299 | register struct buffer *buf; | |
9a132b1f GM |
300 | struct text_pos top; |
301 | Lisp_Object in_window; | |
7ab12479 | 302 | |
265a9e55 | 303 | if (NILP (pos)) |
5ce7b543 | 304 | posint = PT; |
7ab12479 JB |
305 | else |
306 | { | |
307 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
308 | posint = XINT (pos); | |
309 | } | |
310 | ||
605be8af | 311 | w = decode_window (window); |
9a132b1f | 312 | buf = XBUFFER (w->buffer); |
5500c422 | 313 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
7ab12479 | 314 | |
5500c422 GM |
315 | /* If position above window, it's not visible. */ |
316 | if (posint < CHARPOS (top)) | |
9a132b1f GM |
317 | in_window = Qnil; |
318 | else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) | |
319 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf) | |
320 | && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos)) | |
321 | /* If frame is up to date, and POSINT is < window end pos, use | |
322 | that info. This doesn't work for POSINT == end pos, because | |
323 | the window end pos is actually the position _after_ the last | |
324 | char in the window. */ | |
325 | in_window = Qt; | |
326 | else if (posint > BUF_ZV (buf)) | |
327 | in_window = Qnil; | |
328 | else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf)) | |
329 | /* If window start is out of range, do something reasonable. */ | |
330 | in_window = Qnil; | |
7ab12479 JB |
331 | else |
332 | { | |
5500c422 | 333 | struct it it; |
5500c422 GM |
334 | start_display (&it, w, top); |
335 | move_it_to (&it, posint, 0, it.last_visible_y, -1, | |
9a132b1f GM |
336 | MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y); |
337 | in_window = IT_CHARPOS (it) == posint ? Qt : Qnil; | |
7ab12479 | 338 | } |
9a132b1f GM |
339 | |
340 | return in_window; | |
7ab12479 JB |
341 | } |
342 | \f | |
343 | static struct window * | |
344 | decode_window (window) | |
345 | register Lisp_Object window; | |
346 | { | |
265a9e55 | 347 | if (NILP (window)) |
7ab12479 JB |
348 | return XWINDOW (selected_window); |
349 | ||
605be8af | 350 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
351 | return XWINDOW (window); |
352 | } | |
353 | ||
354 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
355 | "Return the buffer that WINDOW is displaying.") | |
356 | (window) | |
357 | Lisp_Object window; | |
358 | { | |
359 | return decode_window (window)->buffer; | |
360 | } | |
361 | ||
362 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
363 | "Return the number of lines in WINDOW (including its mode line).") | |
364 | (window) | |
365 | Lisp_Object window; | |
366 | { | |
367 | return decode_window (window)->height; | |
368 | } | |
369 | ||
370 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
371 | "Return the number of display columns in WINDOW.\n\ |
372 | This is the width that is usable columns available for text in WINDOW.\n\ | |
373 | If you want to find out how many columns WINDOW takes up,\n\ | |
374 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
375 | (window) |
376 | Lisp_Object window; | |
377 | { | |
ee61d94e | 378 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
379 | } |
380 | ||
381 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
382 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
383 | (window) | |
384 | Lisp_Object window; | |
385 | { | |
386 | return decode_window (window)->hscroll; | |
387 | } | |
388 | ||
389 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
390 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
391 | NCOL should be zero or positive.") | |
392 | (window, ncol) | |
393 | register Lisp_Object window, ncol; | |
394 | { | |
395 | register struct window *w; | |
396 | ||
397 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 398 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 399 | w = decode_window (window); |
7f4161e0 | 400 | if (XINT (w->hscroll) != XINT (ncol)) |
b1599b4c GM |
401 | /* Prevent redisplay shortcuts */ |
402 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7ab12479 JB |
403 | w->hscroll = ncol; |
404 | return ncol; | |
405 | } | |
406 | ||
190eb263 RS |
407 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
408 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
409 | "Return WINDOW's redisplay end trigger value.\n\ | |
410 | See `set-window-redisplay-end-trigger' for more information.") | |
411 | (window) | |
412 | Lisp_Object window; | |
413 | { | |
414 | return decode_window (window)->redisplay_end_trigger; | |
415 | } | |
416 | ||
417 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
418 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
419 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
420 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
421 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
422 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
423 | with two arguments: WINDOW, and the end trigger value.\n\ | |
424 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
425 | (window, value) |
426 | register Lisp_Object window, value; | |
427 | { | |
428 | register struct window *w; | |
429 | ||
430 | w = decode_window (window); | |
431 | w->redisplay_end_trigger = value; | |
432 | return value; | |
433 | } | |
434 | ||
7ab12479 JB |
435 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
436 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 437 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
438 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
439 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
440 | and its mode-line.") | |
441 | (window) | |
442 | Lisp_Object window; | |
443 | { | |
444 | register struct window *w = decode_window (window); | |
445 | ||
446 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 447 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
448 | Fcons (make_number (XFASTINT (w->top) |
449 | + XFASTINT (w->height)), | |
450 | Qnil)))); | |
451 | } | |
452 | ||
fbad6f9a | 453 | /* Test if the character at column *X, row *Y is within window W. |
d5783c40 JB |
454 | If it is not, return 0; |
455 | if it is in the window's text area, | |
456 | set *x and *y to its location relative to the upper left corner | |
457 | of the window, and | |
458 | return 1; | |
459 | if it is on the window's modeline, return 2; | |
460 | if it is on the border between the window and its right sibling, | |
5500c422 GM |
461 | return 3. |
462 | if it is on the window's top line, return 4; | |
fbad6f9a GM |
463 | if it is in the bitmap area to the left/right of the window, |
464 | return 5 or 6, and convert *X and *Y to window-relative corrdinates. | |
5500c422 GM |
465 | |
466 | X and Y are frame relative pixel coordinates. */ | |
467 | ||
d5783c40 JB |
468 | static int |
469 | coordinates_in_window (w, x, y) | |
470 | register struct window *w; | |
471 | register int *x, *y; | |
472 | { | |
5500c422 GM |
473 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
474 | int left_x, right_x, top_y, bottom_y; | |
b46dfc64 | 475 | int flags_area_width = FRAME_LEFT_FLAGS_AREA_WIDTH (f); |
d5783c40 | 476 | |
466539bc EZ |
477 | /* In what's below, we subtract 1 when computing right_x because we |
478 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
479 | if (w->pseudo_window_p) |
480 | { | |
481 | left_x = 0; | |
466539bc | 482 | right_x = XFASTINT (w->width) * CANON_Y_UNIT (f) - 1; |
5500c422 GM |
483 | top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w); |
484 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); | |
485 | } | |
486 | else | |
487 | { | |
2add4349 | 488 | left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w) |
50df5e5a | 489 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
466539bc | 490 | right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1; |
2add4349 | 491 | top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w) |
50df5e5a | 492 | - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f)); |
5500c422 GM |
493 | bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w); |
494 | } | |
37962e60 | 495 | |
5500c422 GM |
496 | if (*y < top_y |
497 | || *y >= bottom_y | |
498 | || *x < (left_x | |
499 | - flags_area_width | |
500 | - (FRAME_LEFT_SCROLL_BAR_WIDTH (f) | |
501 | * CANON_X_UNIT (f))) | |
502 | || *x > right_x + flags_area_width) | |
503 | /* Completely outside anything interesting. */ | |
504 | return 0; | |
505 | else if (WINDOW_WANTS_MODELINE_P (w) | |
506 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) | |
507 | /* On the mode line. */ | |
508 | return 2; | |
045dee35 GM |
509 | else if (WINDOW_WANTS_HEADER_LINE_P (w) |
510 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) | |
5500c422 GM |
511 | /* On the top line. */ |
512 | return 4; | |
513 | else if (*x < left_x || *x >= right_x) | |
fbad6f9a GM |
514 | { |
515 | /* Other lines than the mode line don't include flags areas and | |
516 | scroll bars on the left. */ | |
517 | ||
518 | /* Convert X and Y to window-relative pixel coordinates. */ | |
519 | *x -= left_x; | |
520 | *y -= top_y; | |
521 | return *x < left_x ? 5 : 6; | |
522 | } | |
5500c422 GM |
523 | else if (!w->pseudo_window_p |
524 | && !WINDOW_RIGHTMOST_P (w) | |
525 | && *x >= right_x - CANON_X_UNIT (f)) | |
526 | /* On the border on the right side of the window? Assume that | |
527 | this area begins at RIGHT_X minus a canonical char width. */ | |
528 | return 3; | |
529 | else | |
530 | { | |
531 | /* Convert X and Y to window-relative pixel coordinates. */ | |
532 | *x -= left_x; | |
533 | *y -= top_y; | |
534 | return 1; | |
535 | } | |
d5783c40 JB |
536 | } |
537 | ||
538 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
539 | Scoordinates_in_window_p, 2, 2, 0, | |
540 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 541 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 542 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 543 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 544 | frame.\n\ |
d5783c40 JB |
545 | If COORDINATES are in the text portion of WINDOW,\n\ |
546 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 547 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
045dee35 | 548 | If they are in the top mode line of WINDOW, `header-line' is returned.\n\ |
fbad6f9a GM |
549 | If they are in the bitmap-area to the left of the window,\n\ |
550 | `left-bitmap-area' is returned, if they are in the area on the right of\n\ | |
551 | the window, `right-bitmap-area' is returned.\n\ | |
d5783c40 | 552 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 553 | `vertical-line' is returned.") |
d5783c40 JB |
554 | (coordinates, window) |
555 | register Lisp_Object coordinates, window; | |
556 | { | |
5500c422 GM |
557 | struct window *w; |
558 | struct frame *f; | |
d5783c40 | 559 | int x, y; |
5500c422 | 560 | Lisp_Object lx, ly; |
d5783c40 | 561 | |
605be8af | 562 | CHECK_LIVE_WINDOW (window, 0); |
5500c422 GM |
563 | w = XWINDOW (window); |
564 | f = XFRAME (w->frame); | |
d5783c40 | 565 | CHECK_CONS (coordinates, 1); |
5500c422 GM |
566 | lx = Fcar (coordinates); |
567 | ly = Fcdr (coordinates); | |
568 | CHECK_NUMBER_OR_FLOAT (lx, 1); | |
569 | CHECK_NUMBER_OR_FLOAT (ly, 1); | |
570 | x = PIXEL_X_FROM_CANON_X (f, lx); | |
571 | y = PIXEL_Y_FROM_CANON_Y (f, ly); | |
572 | ||
573 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 JB |
574 | { |
575 | case 0: /* NOT in window at all. */ | |
576 | return Qnil; | |
577 | ||
578 | case 1: /* In text part of window. */ | |
5500c422 GM |
579 | /* X and Y are now window relative pixel coordinates. |
580 | Convert them to canonical char units before returning | |
581 | them. */ | |
582 | return Fcons (CANON_X_FROM_PIXEL_X (f, x), | |
583 | CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 JB |
584 | |
585 | case 2: /* In mode line of window. */ | |
586 | return Qmode_line; | |
37962e60 | 587 | |
d5783c40 | 588 | case 3: /* On right border of window. */ |
e5d77022 | 589 | return Qvertical_line; |
d5783c40 | 590 | |
5500c422 | 591 | case 4: |
045dee35 | 592 | return Qheader_line; |
5500c422 | 593 | |
fbad6f9a GM |
594 | case 5: |
595 | return Qleft_bitmap_area; | |
596 | ||
597 | case 6: | |
598 | return Qright_bitmap_area; | |
599 | ||
d5783c40 JB |
600 | default: |
601 | abort (); | |
602 | } | |
603 | } | |
604 | ||
67492200 GM |
605 | |
606 | /* Callback for foreach_window, used in window_from_coordinates. | |
607 | Check if window W contains coordinates *X/*Y. If it does, return W | |
608 | in *WINDOW, as Lisp_Object, and return in *PART the part of the | |
609 | window under coordinates *X/*Y. Return zero from this function to | |
610 | stop iterating over windows. */ | |
611 | ||
612 | static int | |
613 | check_window_containing (w, window, x, y, part) | |
614 | struct window *w; | |
615 | Lisp_Object *window; | |
616 | int *x, *y, *part; | |
617 | { | |
618 | int found; | |
619 | ||
620 | found = coordinates_in_window (w, x, y); | |
621 | if (found) | |
622 | { | |
623 | *part = found - 1; | |
624 | XSETWINDOW (*window, w); | |
625 | } | |
626 | ||
627 | return !found; | |
628 | } | |
629 | ||
630 | ||
5500c422 GM |
631 | /* Find the window containing frame-relative pixel position X/Y and |
632 | return it as a Lisp_Object. If X, Y is on the window's modeline, | |
633 | set *PART to 1; if it is on the separating line between the window | |
634 | and its right sibling, set it to 2; otherwise set it to 0. If | |
635 | there is no window under X, Y return nil and leave *PART | |
67492200 GM |
636 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
637 | ||
638 | This function was previously implemented with a loop cycling over | |
639 | windows with Fnext_window, and starting with the frame's selected | |
640 | window. It turned out that this doesn't work with an | |
641 | implementation of next_window using Vwindow_list, because | |
642 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
643 | tree of F when this function is called asynchronously from | |
644 | note_mouse_highlight. The original loop didn't terminate in this | |
645 | case. */ | |
5500c422 | 646 | |
7ab12479 | 647 | Lisp_Object |
67492200 GM |
648 | window_from_coordinates (f, x, y, part, tool_bar_p) |
649 | struct frame *f; | |
7ab12479 | 650 | int x, y; |
d5783c40 | 651 | int *part; |
9ea173e8 | 652 | int tool_bar_p; |
7ab12479 | 653 | { |
67492200 | 654 | Lisp_Object window; |
5500c422 | 655 | |
67492200 GM |
656 | window = Qnil; |
657 | foreach_window (f, check_window_containing, &window, &x, &y, part); | |
658 | ||
659 | /* If not found above, see if it's in the tool bar window, if a tool | |
660 | bar exists. */ | |
661 | if (NILP (window) | |
662 | && tool_bar_p | |
663 | && WINDOWP (f->tool_bar_window) | |
664 | && XINT (XWINDOW (f->tool_bar_window)->height) > 0 | |
665 | && coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y)) | |
5500c422 GM |
666 | { |
667 | *part = 0; | |
67492200 | 668 | window = f->tool_bar_window; |
5500c422 | 669 | } |
37962e60 | 670 | |
67492200 | 671 | return window; |
7ab12479 JB |
672 | } |
673 | ||
ab17c3f2 | 674 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 675 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
676 | If omitted, FRAME defaults to the currently selected frame.\n\ |
677 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 678 | column 0.") |
b0c33a94 RS |
679 | (x, y, frame) |
680 | Lisp_Object x, y, frame; | |
7ab12479 JB |
681 | { |
682 | int part; | |
5500c422 | 683 | struct frame *f; |
7ab12479 | 684 | |
44fa5b1e | 685 | if (NILP (frame)) |
1ae1a37d GM |
686 | frame = selected_frame; |
687 | CHECK_LIVE_FRAME (frame, 2); | |
5500c422 | 688 | f = XFRAME (frame); |
7ab12479 | 689 | |
5500c422 GM |
690 | /* Check that arguments are integers or floats. */ |
691 | CHECK_NUMBER_OR_FLOAT (x, 0); | |
692 | CHECK_NUMBER_OR_FLOAT (y, 1); | |
693 | ||
694 | return window_from_coordinates (f, | |
695 | PIXEL_X_FROM_CANON_X (f, x), | |
696 | PIXEL_Y_FROM_CANON_Y (f, y), | |
697 | &part, 0); | |
7ab12479 JB |
698 | } |
699 | ||
700 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
701 | "Return current value of point in WINDOW.\n\ | |
702 | For a nonselected window, this is the value point would have\n\ | |
703 | if that window were selected.\n\ | |
704 | \n\ | |
705 | Note that, when WINDOW is the selected window and its buffer\n\ | |
706 | is also currently selected, the value returned is the same as (point).\n\ | |
707 | It would be more strictly correct to return the `top-level' value\n\ | |
708 | of point, outside of any save-excursion forms.\n\ | |
709 | But that is hard to define.") | |
710 | (window) | |
711 | Lisp_Object window; | |
712 | { | |
713 | register struct window *w = decode_window (window); | |
714 | ||
715 | if (w == XWINDOW (selected_window) | |
716 | && current_buffer == XBUFFER (w->buffer)) | |
717 | return Fpoint (); | |
718 | return Fmarker_position (w->pointm); | |
719 | } | |
720 | ||
721 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
722 | "Return position at which display currently starts in WINDOW.\n\ |
723 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
724 | (window) |
725 | Lisp_Object window; | |
726 | { | |
727 | return Fmarker_position (decode_window (window)->start); | |
728 | } | |
729 | ||
8646118f RS |
730 | /* This is text temporarily removed from the doc string below. |
731 | ||
7250968e RS |
732 | This function returns nil if the position is not currently known.\n\ |
733 | That happens when redisplay is preempted and doesn't finish.\n\ | |
734 | If in that case you want to compute where the end of the window would\n\ | |
735 | have been if redisplay had finished, do this:\n\ | |
736 | (save-excursion\n\ | |
737 | (goto-char (window-start window))\n\ | |
738 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
739 | (point))") */ |
740 | ||
478292ed | 741 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
8646118f RS |
742 | "Return position at which display currently ends in WINDOW.\n\ |
743 | This is updated by redisplay, when it runs to completion.\n\ | |
744 | Simply changing the buffer text or setting `window-start'\n\ | |
478292ed RS |
745 | does not update this value.\n\ |
746 | If UP-TO-DATE is non-nil, compute the up-to-date position\n\ | |
747 | if it isn't already recorded.") | |
748 | (window, update) | |
749 | Lisp_Object window, update; | |
7ab12479 JB |
750 | { |
751 | Lisp_Object value; | |
752 | struct window *w = decode_window (window); | |
5a41ab94 RS |
753 | Lisp_Object buf; |
754 | ||
755 | buf = w->buffer; | |
756 | CHECK_BUFFER (buf, 0); | |
757 | ||
8646118f | 758 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
759 | /* If we don't know the end position, return nil. |
760 | The user can compute it with vertical-motion if he wants to. | |
761 | It would be nicer to do it automatically, | |
762 | but that's so slow that it would probably bother people. */ | |
763 | if (NILP (w->window_end_valid)) | |
764 | return Qnil; | |
8646118f | 765 | #endif |
7250968e | 766 | |
478292ed RS |
767 | if (! NILP (update) |
768 | && ! (! NILP (w->window_end_valid) | |
769 | && XFASTINT (w->last_modified) >= MODIFF)) | |
770 | { | |
771 | int opoint = PT, opoint_byte = PT_BYTE; | |
2d6d9df0 GM |
772 | |
773 | /* In case W->start is out of the range, use something | |
774 | reasonable. This situation occured when loading a file with | |
775 | `-l' containing a call to `rmail' with subsequent other | |
776 | commands. At the end, W->start happened to be BEG, while | |
777 | rmail had already narrowed the buffer. This leads to an | |
778 | abort in temp_set_pt_both. */ | |
779 | if (XMARKER (w->start)->charpos < BEGV) | |
780 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
781 | else if (XMARKER (w->start)->charpos > ZV) | |
782 | TEMP_SET_PT_BOTH (ZV, ZV_BYTE); | |
783 | else | |
784 | TEMP_SET_PT_BOTH (XMARKER (w->start)->charpos, | |
785 | XMARKER (w->start)->bytepos); | |
786 | ||
478292ed RS |
787 | Fvertical_motion (make_number (window_internal_height (w)), Qnil); |
788 | XSETINT (value, PT); | |
789 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
790 | } | |
791 | else | |
792 | XSETINT (value, | |
793 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
794 | |
795 | return value; | |
796 | } | |
797 | ||
798 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
799 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
800 | (window, pos) | |
801 | Lisp_Object window, pos; | |
802 | { | |
803 | register struct window *w = decode_window (window); | |
804 | ||
805 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
e90c4fe6 RS |
806 | if (w == XWINDOW (selected_window) |
807 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
808 | Fgoto_char (pos); |
809 | else | |
810 | set_marker_restricted (w->pointm, pos, w->buffer); | |
ce7fae7d | 811 | |
7ab12479 JB |
812 | return pos; |
813 | } | |
814 | ||
815 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
816 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
817 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
818 | from overriding motion of point in order to display at this exact start.") | |
819 | (window, pos, noforce) | |
820 | Lisp_Object window, pos, noforce; | |
821 | { | |
822 | register struct window *w = decode_window (window); | |
823 | ||
824 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
825 | set_marker_restricted (w->start, pos, w->buffer); | |
826 | /* this is not right, but much easier than doing what is right. */ | |
827 | w->start_at_line_beg = Qnil; | |
265a9e55 | 828 | if (NILP (noforce)) |
7ab12479 JB |
829 | w->force_start = Qt; |
830 | w->update_mode_line = Qt; | |
d834a2e9 | 831 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 832 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
833 | if (!EQ (window, selected_window)) |
834 | windows_or_buffers_changed++; | |
ce7fae7d | 835 | |
7ab12479 JB |
836 | return pos; |
837 | } | |
838 | ||
839 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
840 | 1, 1, 0, | |
841 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 842 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
843 | (window) |
844 | Lisp_Object window; | |
845 | { | |
846 | return decode_window (window)->dedicated; | |
847 | } | |
848 | ||
d207b766 RS |
849 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
850 | Sset_window_dedicated_p, 2, 2, 0, | |
851 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
852 | If it is dedicated, Emacs will not automatically change\n\ | |
853 | which buffer appears in it.\n\ | |
854 | The second argument is the new value for the dedication flag;\n\ | |
855 | non-nil means yes.") | |
7ab12479 JB |
856 | (window, arg) |
857 | Lisp_Object window, arg; | |
858 | { | |
859 | register struct window *w = decode_window (window); | |
860 | ||
265a9e55 | 861 | if (NILP (arg)) |
7ab12479 JB |
862 | w->dedicated = Qnil; |
863 | else | |
d207b766 | 864 | w->dedicated = Qt; |
7ab12479 JB |
865 | |
866 | return w->dedicated; | |
867 | } | |
868 | ||
869 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
870 | 0, 1, 0, | |
871 | "Return the display-table that WINDOW is using.") | |
872 | (window) | |
873 | Lisp_Object window; | |
874 | { | |
875 | return decode_window (window)->display_table; | |
876 | } | |
877 | ||
5500c422 GM |
878 | /* Get the display table for use on window W. This is either W's |
879 | display table or W's buffer's display table. Ignore the specified | |
880 | tables if they are not valid; if no valid table is specified, | |
881 | return 0. */ | |
7ab12479 | 882 | |
319315f1 | 883 | struct Lisp_Char_Table * |
7ab12479 JB |
884 | window_display_table (w) |
885 | struct window *w; | |
886 | { | |
887 | Lisp_Object tem; | |
888 | tem = w->display_table; | |
319315f1 RS |
889 | if (DISP_TABLE_P (tem)) |
890 | return XCHAR_TABLE (tem); | |
171d003c RS |
891 | if (NILP (w->buffer)) |
892 | return 0; | |
893 | ||
7ab12479 | 894 | tem = XBUFFER (w->buffer)->display_table; |
319315f1 RS |
895 | if (DISP_TABLE_P (tem)) |
896 | return XCHAR_TABLE (tem); | |
7ab12479 | 897 | tem = Vstandard_display_table; |
319315f1 RS |
898 | if (DISP_TABLE_P (tem)) |
899 | return XCHAR_TABLE (tem); | |
7ab12479 JB |
900 | return 0; |
901 | } | |
902 | ||
3a2712f9 | 903 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
904 | "Set WINDOW's display-table to TABLE.") |
905 | (window, table) | |
906 | register Lisp_Object window, table; | |
907 | { | |
908 | register struct window *w; | |
7ab12479 JB |
909 | |
910 | w = decode_window (window); | |
911 | w->display_table = table; | |
912 | return table; | |
913 | } | |
914 | \f | |
915 | /* Record info on buffer window w is displaying | |
916 | when it is about to cease to display that buffer. */ | |
dfcf069d | 917 | static void |
7ab12479 JB |
918 | unshow_buffer (w) |
919 | register struct window *w; | |
920 | { | |
12cae7c0 | 921 | Lisp_Object buf; |
b73ea88e | 922 | struct buffer *b; |
7ab12479 | 923 | |
12cae7c0 | 924 | buf = w->buffer; |
b73ea88e RS |
925 | b = XBUFFER (buf); |
926 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
927 | abort (); |
928 | ||
573f41ab | 929 | #if 0 |
7ab12479 JB |
930 | if (w == XWINDOW (selected_window) |
931 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
932 | /* Do this except when the selected window's buffer | |
933 | is being removed from some other window. */ | |
573f41ab RS |
934 | #endif |
935 | /* last_window_start records the start position that this buffer | |
936 | had in the last window to be disconnected from it. | |
937 | Now that this statement is unconditional, | |
938 | it is possible for the buffer to be displayed in the | |
939 | selected window, while last_window_start reflects another | |
940 | window which was recently showing the same buffer. | |
941 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 942 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
943 | |
944 | /* Point in the selected window's buffer | |
945 | is actually stored in that buffer, and the window's pointm isn't used. | |
946 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
947 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
948 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
949 | && !(WINDOWP (b->last_selected_window) |
950 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 951 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
952 | temp_set_point_both (b, |
953 | clip_to_bounds (BUF_BEGV (b), | |
954 | XMARKER (w->pointm)->charpos, | |
955 | BUF_ZV (b)), | |
956 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
957 | marker_byte_position (w->pointm), | |
958 | BUF_ZV_BYTE (b))); | |
719eaeb1 | 959 | |
8801a864 KR |
960 | if (WINDOWP (b->last_selected_window) |
961 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 962 | b->last_selected_window = Qnil; |
7ab12479 JB |
963 | } |
964 | ||
965 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 966 | static void |
7ab12479 JB |
967 | replace_window (old, replacement) |
968 | Lisp_Object old, replacement; | |
969 | { | |
970 | register Lisp_Object tem; | |
971 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
972 | ||
44fa5b1e JB |
973 | /* If OLD is its frame's root_window, then replacement is the new |
974 | root_window for that frame. */ | |
7ab12479 | 975 | |
7f4161e0 | 976 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 977 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
978 | |
979 | p->left = o->left; | |
980 | p->top = o->top; | |
981 | p->width = o->width; | |
982 | p->height = o->height; | |
5500c422 GM |
983 | p->desired_matrix = p->current_matrix = 0; |
984 | p->vscroll = 0; | |
985 | bzero (&p->cursor, sizeof (p->cursor)); | |
986 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
987 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
988 | p->phys_cursor_type = -1; | |
989 | p->must_be_updated_p = 0; | |
990 | p->pseudo_window_p = 0; | |
991 | XSETFASTINT (p->window_end_vpos, 0); | |
992 | XSETFASTINT (p->window_end_pos, 0); | |
993 | p->window_end_valid = Qnil; | |
7bbb5782 | 994 | p->frozen_window_start_p = 0; |
f984d4fc | 995 | p->orig_top = p->orig_height = Qnil; |
7ab12479 JB |
996 | |
997 | p->next = tem = o->next; | |
265a9e55 | 998 | if (!NILP (tem)) |
7ab12479 JB |
999 | XWINDOW (tem)->prev = replacement; |
1000 | ||
1001 | p->prev = tem = o->prev; | |
265a9e55 | 1002 | if (!NILP (tem)) |
7ab12479 JB |
1003 | XWINDOW (tem)->next = replacement; |
1004 | ||
1005 | p->parent = tem = o->parent; | |
265a9e55 | 1006 | if (!NILP (tem)) |
7ab12479 JB |
1007 | { |
1008 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1009 | XWINDOW (tem)->vchild = replacement; | |
1010 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1011 | XWINDOW (tem)->hchild = replacement; | |
1012 | } | |
1013 | ||
1014 | /*** Here, if replacement is a vertical combination | |
1015 | and so is its new parent, we should make replacement's | |
1016 | children be children of that parent instead. ***/ | |
1017 | } | |
1018 | ||
1019 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
1020 | "Remove WINDOW from the display. Default is selected window.") | |
1021 | (window) | |
1022 | register Lisp_Object window; | |
543f5fb1 RS |
1023 | { |
1024 | delete_window (window); | |
1025 | ||
1026 | if (! NILP (Vwindow_configuration_change_hook) | |
1027 | && ! NILP (Vrun_hooks)) | |
1028 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1029 | ||
1030 | return Qnil; | |
1031 | } | |
1032 | ||
5e14b1fc | 1033 | void |
543f5fb1 RS |
1034 | delete_window (window) |
1035 | register Lisp_Object window; | |
7ab12479 JB |
1036 | { |
1037 | register Lisp_Object tem, parent, sib; | |
1038 | register struct window *p; | |
1039 | register struct window *par; | |
5500c422 | 1040 | FRAME_PTR frame; |
7ab12479 | 1041 | |
605be8af JB |
1042 | /* Because this function is called by other C code on non-leaf |
1043 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1044 | so we can't decode_window here. */ | |
265a9e55 | 1045 | if (NILP (window)) |
7ab12479 JB |
1046 | window = selected_window; |
1047 | else | |
1048 | CHECK_WINDOW (window, 0); | |
7ab12479 | 1049 | p = XWINDOW (window); |
605be8af JB |
1050 | |
1051 | /* It's okay to delete an already-deleted window. */ | |
1052 | if (NILP (p->buffer) | |
1053 | && NILP (p->hchild) | |
1054 | && NILP (p->vchild)) | |
296b535c | 1055 | return; |
605be8af | 1056 | |
7ab12479 | 1057 | parent = p->parent; |
265a9e55 | 1058 | if (NILP (parent)) |
7ab12479 JB |
1059 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1060 | par = XWINDOW (parent); | |
1061 | ||
1062 | windows_or_buffers_changed++; | |
67492200 | 1063 | Vwindow_list = Qnil; |
5500c422 GM |
1064 | frame = XFRAME (WINDOW_FRAME (p)); |
1065 | FRAME_WINDOW_SIZES_CHANGED (frame) = 1; | |
7ab12479 | 1066 | |
605be8af JB |
1067 | /* Are we trying to delete any frame's selected window? */ |
1068 | { | |
0def0403 | 1069 | Lisp_Object frame, pwindow; |
605be8af | 1070 | |
0def0403 RS |
1071 | /* See if the frame's selected window is either WINDOW |
1072 | or any subwindow of it, by finding all that window's parents | |
1073 | and comparing each one with WINDOW. */ | |
1074 | frame = WINDOW_FRAME (XWINDOW (window)); | |
1075 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
1076 | ||
1077 | while (!NILP (pwindow)) | |
1078 | { | |
1079 | if (EQ (window, pwindow)) | |
1080 | break; | |
1081 | pwindow = XWINDOW (pwindow)->parent; | |
1082 | } | |
1083 | ||
1084 | if (EQ (window, pwindow)) | |
605be8af | 1085 | { |
89bca612 RS |
1086 | Lisp_Object alternative; |
1087 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
1088 | |
1089 | /* If we're about to delete the selected window on the | |
1090 | selected frame, then we should use Fselect_window to select | |
1091 | the new window. On the other hand, if we're about to | |
1092 | delete the selected window on any other frame, we shouldn't do | |
1093 | anything but set the frame's selected_window slot. */ | |
1094 | if (EQ (window, selected_window)) | |
1095 | Fselect_window (alternative); | |
1096 | else | |
0def0403 | 1097 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
1098 | } |
1099 | } | |
7ab12479 JB |
1100 | |
1101 | tem = p->buffer; | |
1102 | /* tem is null for dummy parent windows | |
1103 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1104 | if (!NILP (tem)) |
7ab12479 JB |
1105 | { |
1106 | unshow_buffer (p); | |
1107 | unchain_marker (p->pointm); | |
1108 | unchain_marker (p->start); | |
7ab12479 JB |
1109 | } |
1110 | ||
05e71564 GM |
1111 | /* Free window glyph matrices. It is sure that they are allocated |
1112 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1113 | events and other events that access glyph matrices are not | |
1114 | processed while we are changing them. */ | |
1115 | BLOCK_INPUT; | |
5500c422 GM |
1116 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (frame))); |
1117 | ||
7ab12479 | 1118 | tem = p->next; |
265a9e55 | 1119 | if (!NILP (tem)) |
7ab12479 JB |
1120 | XWINDOW (tem)->prev = p->prev; |
1121 | ||
1122 | tem = p->prev; | |
265a9e55 | 1123 | if (!NILP (tem)) |
7ab12479 JB |
1124 | XWINDOW (tem)->next = p->next; |
1125 | ||
1126 | if (EQ (window, par->hchild)) | |
1127 | par->hchild = p->next; | |
1128 | if (EQ (window, par->vchild)) | |
1129 | par->vchild = p->next; | |
1130 | ||
1131 | /* Find one of our siblings to give our space to. */ | |
1132 | sib = p->prev; | |
265a9e55 | 1133 | if (NILP (sib)) |
7ab12479 JB |
1134 | { |
1135 | /* If p gives its space to its next sibling, that sibling needs | |
1136 | to have its top/left side pulled back to where p's is. | |
1137 | set_window_{height,width} will re-position the sibling's | |
1138 | children. */ | |
1139 | sib = p->next; | |
7f4161e0 JB |
1140 | XWINDOW (sib)->top = p->top; |
1141 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
1142 | } |
1143 | ||
1144 | /* Stretch that sibling. */ | |
265a9e55 | 1145 | if (!NILP (par->vchild)) |
7ab12479 JB |
1146 | set_window_height (sib, |
1147 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
1148 | 1); | |
265a9e55 | 1149 | if (!NILP (par->hchild)) |
7ab12479 JB |
1150 | set_window_width (sib, |
1151 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
1152 | 1); | |
1153 | ||
1154 | /* If parent now has only one child, | |
1155 | put the child into the parent's place. */ | |
7ab12479 | 1156 | tem = par->hchild; |
265a9e55 | 1157 | if (NILP (tem)) |
7ab12479 | 1158 | tem = par->vchild; |
265a9e55 | 1159 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 1160 | replace_window (parent, tem); |
605be8af JB |
1161 | |
1162 | /* Since we may be deleting combination windows, we must make sure that | |
1163 | not only p but all its children have been marked as deleted. */ | |
1164 | if (! NILP (p->hchild)) | |
1165 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1166 | else if (! NILP (p->vchild)) | |
1167 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1168 | ||
1169 | /* Mark this window as deleted. */ | |
1170 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 GM |
1171 | |
1172 | /* Adjust glyph matrices. */ | |
1173 | adjust_glyphs (frame); | |
05e71564 | 1174 | UNBLOCK_INPUT; |
7ab12479 | 1175 | } |
67492200 GM |
1176 | |
1177 | ||
7ab12479 | 1178 | \f |
67492200 GM |
1179 | /*********************************************************************** |
1180 | Window List | |
1181 | ***********************************************************************/ | |
1182 | ||
212116d6 GM |
1183 | /* Add window W to *LIST. This is a callback function for |
1184 | foreach_window, used in function window_list. */ | |
67492200 GM |
1185 | |
1186 | static int | |
212116d6 | 1187 | add_window_to_list (w, list) |
67492200 | 1188 | struct window *w; |
212116d6 | 1189 | Lisp_Object *list; |
67492200 GM |
1190 | { |
1191 | Lisp_Object window; | |
1192 | XSETWINDOW (window, w); | |
212116d6 | 1193 | *list = Fcons (window, *list); |
67492200 GM |
1194 | return 1; |
1195 | } | |
1196 | ||
1197 | ||
1198 | /* Return a list of all windows, for use by next_window. If | |
1199 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1200 | list, cache it in Vwindow_list, and return that. */ | |
1201 | ||
1202 | static Lisp_Object | |
1203 | window_list () | |
1204 | { | |
1205 | if (!CONSP (Vwindow_list)) | |
1206 | { | |
1207 | Lisp_Object tail; | |
212116d6 | 1208 | |
67492200 GM |
1209 | Vwindow_list = Qnil; |
1210 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1211 | { |
1212 | Lisp_Object args[2]; | |
1213 | ||
1214 | /* We are visiting windows in canonical order, and add | |
1215 | new windows at the front of args[1], which means we | |
1216 | have to reverse this list at the end. */ | |
1217 | args[1] = Qnil; | |
1218 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1219 | args[0] = Vwindow_list; | |
1220 | args[1] = Fnreverse (args[1]); | |
1221 | Vwindow_list = Fnconc (2, args); | |
1222 | } | |
67492200 GM |
1223 | } |
1224 | ||
1225 | return Vwindow_list; | |
1226 | } | |
1227 | ||
1228 | ||
1229 | /* Value is non-zero if WINODW satisfies the constraints given by | |
1230 | MINIBUF and ALL_FRAMES. | |
1231 | ||
1232 | MINIBUF t means WINDOW may be a minibuffer window. | |
1233 | MINIBUF `lambda' means it may not be a minibuffer window. | |
1234 | MINIBUF being a window means WINDOW must be equal to MINIBUF. | |
1235 | ||
1236 | ALL_FRAMES t means WINDOW may be on any frame. | |
1237 | ALL_FRAMES nil means WINDOW must not be on a minibuffer-only frame. | |
1238 | ALL_FRAMES `visible' means WINDOW must be on a visible frame. | |
1239 | ALL_FRAMES 0 means WINDOW must be on a visible or iconified frame. | |
1240 | ALL_FRAMES being a frame means WINDOW must be on that frame. | |
1241 | ALL_FRAMES being a window means WINDOW must be on a frame using | |
1242 | the same minibuffer as ALL_FRAMES. */ | |
1243 | ||
1244 | static int | |
1245 | candidate_window_p (window, minibuf, all_frames) | |
1246 | Lisp_Object window, minibuf, all_frames; | |
1247 | { | |
1248 | struct window *w = XWINDOW (window); | |
1249 | struct frame *f = XFRAME (w->frame); | |
1250 | int candidate_p = 1; | |
1251 | ||
1252 | if (!BUFFERP (w->buffer)) | |
1253 | candidate_p = 0; | |
1254 | else if (MINI_WINDOW_P (w) | |
1255 | && (EQ (minibuf, Qlambda) | |
1256 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1257 | { | |
1258 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1259 | If it is a window, consider only that one. */ | |
1260 | candidate_p = 0; | |
1261 | } | |
1262 | else if (NILP (all_frames)) | |
1263 | candidate_p = !FRAME_MINIBUF_ONLY_P (f); | |
1264 | else if (EQ (all_frames, Qvisible)) | |
1265 | { | |
1266 | FRAME_SAMPLE_VISIBILITY (f); | |
1267 | candidate_p = FRAME_VISIBLE_P (f); | |
1268 | } | |
1269 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1270 | { | |
1271 | FRAME_SAMPLE_VISIBILITY (f); | |
1272 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1273 | } | |
1274 | else if (FRAMEP (all_frames)) | |
1275 | candidate_p = EQ (all_frames, w->frame); | |
1276 | else if (WINDOWP (all_frames)) | |
1277 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1278 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1279 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
1280 | ||
1281 | return candidate_p; | |
1282 | } | |
1283 | ||
1284 | ||
1285 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1286 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1287 | ALL_FRAMES. */ | |
1288 | ||
1289 | static void | |
1290 | decode_next_window_args (window, minibuf, all_frames) | |
1291 | Lisp_Object *window, *minibuf, *all_frames; | |
1292 | { | |
1293 | if (NILP (*window)) | |
1294 | *window = selected_window; | |
1295 | else | |
1296 | CHECK_LIVE_WINDOW (*window, 0); | |
1297 | ||
1298 | /* MINIBUF nil may or may not include minibuffers. Decide if it | |
1299 | does. */ | |
1300 | if (NILP (*minibuf)) | |
1301 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1302 | else if (!EQ (*minibuf, Qt)) | |
1303 | *minibuf = Qlambda; | |
1304 | ||
1305 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' | |
1306 | => count none of them, or a specific minibuffer window (the | |
1307 | active one) to count. */ | |
1308 | ||
1309 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1310 | if (NILP (*all_frames)) | |
1311 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1312 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1313 | : Qnil); | |
1314 | else if (EQ (*all_frames, Qvisible)) | |
1315 | ; | |
1316 | else if (XFASTINT (*all_frames) == 0) | |
1317 | ; | |
1318 | else if (FRAMEP (*all_frames)) | |
1319 | ; | |
1320 | else if (!EQ (*all_frames, Qt)) | |
1321 | *all_frames = Qnil; | |
1322 | ||
1323 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning | |
1324 | search just current frame, `visible' meaning search just visible | |
1325 | frames, 0 meaning search visible and iconified frames, or a | |
1326 | window, meaning search the frame that window belongs to, or a | |
1327 | frame, meaning consider windows on that frame, only. */ | |
1328 | } | |
1329 | ||
1330 | ||
1331 | /* Return the next or previous window of WINDOW in canonical ordering | |
1332 | of windows. NEXT_P non-zero means return the next window. See the | |
1333 | documentation string of next-window for the meaning of MINIBUF and | |
1334 | ALL_FRAMES. */ | |
1335 | ||
1336 | static Lisp_Object | |
1337 | next_window (window, minibuf, all_frames, next_p) | |
1338 | Lisp_Object window, minibuf, all_frames; | |
1339 | int next_p; | |
1340 | { | |
1341 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1342 | ||
1343 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just | |
1344 | return the first window on the frame. */ | |
1345 | if (FRAMEP (all_frames) | |
1346 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1347 | return Fframe_first_window (all_frames); | |
1348 | ||
212116d6 | 1349 | if (next_p) |
67492200 GM |
1350 | { |
1351 | Lisp_Object list; | |
1352 | ||
1353 | /* Find WINDOW in the list of all windows. */ | |
1354 | list = Fmemq (window, window_list ()); | |
1355 | ||
1356 | /* Scan forward from WINDOW to the end of the window list. */ | |
1357 | if (CONSP (list)) | |
1358 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
1359 | if (candidate_window_p (XCAR (list), minibuf, all_frames)) | |
1360 | break; | |
1361 | ||
1362 | /* Scan from the start of the window list up to WINDOW. */ | |
1363 | if (!CONSP (list)) | |
1364 | for (list = Vwindow_list; | |
1365 | CONSP (list) && !EQ (XCAR (list), window); | |
1366 | list = XCDR (list)) | |
1367 | if (candidate_window_p (XCAR (list), minibuf, all_frames)) | |
1368 | break; | |
1369 | ||
1370 | if (CONSP (list)) | |
1371 | window = XCAR (list); | |
1372 | } | |
1373 | else | |
1374 | { | |
1375 | Lisp_Object candidate, list; | |
1376 | ||
1377 | /* Scan through the list of windows for candidates. If there are | |
1378 | candidate windows in front of WINDOW, the last one of these | |
1379 | is the one we want. If there are candidates following WINDOW | |
1380 | in the list, again the last one of these is the one we want. */ | |
1381 | candidate = Qnil; | |
1382 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1383 | { | |
1384 | if (EQ (XCAR (list), window)) | |
1385 | { | |
1386 | if (WINDOWP (candidate)) | |
1387 | break; | |
1388 | } | |
1389 | else if (candidate_window_p (XCAR (list), minibuf, all_frames)) | |
1390 | candidate = XCAR (list); | |
1391 | } | |
1392 | ||
1393 | if (WINDOWP (candidate)) | |
1394 | window = candidate; | |
1395 | } | |
1396 | ||
1397 | return window; | |
1398 | } | |
7ab12479 | 1399 | |
7ab12479 | 1400 | |
26f6279d JB |
1401 | /* This comment supplies the doc string for `next-window', |
1402 | for make-docfile to see. We cannot put this in the real DEFUN | |
1403 | due to limits in the Unix cpp. | |
1404 | ||
1405 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 1406 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1407 | If omitted, WINDOW defaults to the selected window.\n\ |
1408 | \n\ | |
1409 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1410 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1411 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1412 | minibuffer even if it is active.\n\ | |
1413 | \n\ | |
44fa5b1e JB |
1414 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1415 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1416 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
1417 | set of windows even when the minibuffer is on another frame. If the\n\ |
1418 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 1419 | \n\ |
44fa5b1e JB |
1420 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1421 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1422 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1423 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1424 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1425 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1426 | \n\ |
1427 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1428 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
1429 | windows, eventually ending up back at the window you started with.\n\ | |
1430 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1431 | (window, minibuf, all_frames) */ |
1432 | ||
1433 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
1434 | 0) | |
44fa5b1e | 1435 | (window, minibuf, all_frames) |
67492200 | 1436 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1437 | { |
67492200 | 1438 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1439 | } |
1440 | ||
67492200 | 1441 | |
26f6279d JB |
1442 | /* This comment supplies the doc string for `previous-window', |
1443 | for make-docfile to see. We cannot put this in the real DEFUN | |
1444 | due to limits in the Unix cpp. | |
1445 | ||
1446 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1447 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1448 | If omitted, WINDOW defaults to the selected window.\n\ |
1449 | \n\ | |
1450 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1451 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1452 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1453 | minibuffer even if it is active.\n\ | |
1454 | \n\ | |
44fa5b1e JB |
1455 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1456 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1457 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1458 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1459 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1460 | \n\ |
44fa5b1e JB |
1461 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1462 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1463 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1464 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1465 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1466 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1467 | \n\ |
1468 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1469 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1470 | windows, eventually ending up back at the window you started with.\n\ | |
1471 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1472 | (window, minibuf, all_frames) */ |
1473 | ||
1474 | ||
1475 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1476 | 0) | |
44fa5b1e | 1477 | (window, minibuf, all_frames) |
67492200 | 1478 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1479 | { |
67492200 | 1480 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1481 | } |
1482 | ||
67492200 | 1483 | |
62c07cc7 | 1484 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1485 | "Select the ARG'th different window on this frame.\n\ |
1486 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1487 | This command selects the window ARG steps away in that order.\n\ |
1488 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1489 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 | 1490 | (arg, all_frames) |
67492200 | 1491 | Lisp_Object arg, all_frames; |
7ab12479 | 1492 | { |
67492200 GM |
1493 | Lisp_Object window; |
1494 | int i; | |
7ab12479 | 1495 | |
413430c5 | 1496 | CHECK_NUMBER (arg, 0); |
67492200 GM |
1497 | window = selected_window; |
1498 | ||
1499 | for (i = XINT (arg); i > 0; --i) | |
1500 | window = Fnext_window (window, Qnil, all_frames); | |
1501 | for (; i < 0; ++i) | |
1502 | window = Fprevious_window (window, Qnil, all_frames); | |
1503 | ||
1504 | Fselect_window (window); | |
7ab12479 JB |
1505 | return Qnil; |
1506 | } | |
67492200 GM |
1507 | |
1508 | ||
1509 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
1510 | "Return a list windows in canonical ordering.\n\ | |
1511 | Arguments are like for `next-window'.") | |
1512 | (window, minibuf, all_frames) | |
1513 | Lisp_Object minibuf, all_frames; | |
1514 | { | |
1515 | Lisp_Object tail, list; | |
1516 | ||
1517 | decode_next_window_args (&window, &minibuf, &all_frames); | |
1518 | list = Qnil; | |
1519 | ||
1520 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) | |
1521 | if (candidate_window_p (XCAR (tail), minibuf, all_frames)) | |
1522 | list = Fcons (XCAR (tail), list); | |
1523 | ||
1524 | return list; | |
1525 | } | |
1526 | ||
1527 | ||
7ab12479 JB |
1528 | \f |
1529 | /* Look at all windows, performing an operation specified by TYPE | |
1530 | with argument OBJ. | |
75d8f668 | 1531 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1532 | Qnil, look at just the selected frame; |
89bca612 | 1533 | Qvisible, look at visible frames; |
75d8f668 | 1534 | a frame, just look at windows on that frame. |
7ab12479 JB |
1535 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1536 | */ | |
1537 | ||
1538 | enum window_loop | |
1539 | { | |
1540 | WINDOW_LOOP_UNUSED, | |
1541 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1542 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1543 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1544 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1545 | GET_LARGEST_WINDOW, | |
3f8ab7bd RS |
1546 | UNSHOW_BUFFER, /* Arg is buffer */ |
1547 | CHECK_ALL_WINDOWS | |
7ab12479 JB |
1548 | }; |
1549 | ||
1550 | static Lisp_Object | |
44fa5b1e | 1551 | window_loop (type, obj, mini, frames) |
7ab12479 | 1552 | enum window_loop type; |
44fa5b1e | 1553 | register Lisp_Object obj, frames; |
7ab12479 JB |
1554 | int mini; |
1555 | { | |
1556 | register Lisp_Object w; | |
1557 | register Lisp_Object best_window; | |
1558 | register Lisp_Object next_window; | |
4b206065 | 1559 | register Lisp_Object last_window; |
44fa5b1e | 1560 | FRAME_PTR frame; |
89bca612 RS |
1561 | Lisp_Object frame_arg; |
1562 | frame_arg = Qt; | |
44fa5b1e JB |
1563 | |
1564 | /* If we're only looping through windows on a particular frame, | |
1565 | frame points to that frame. If we're looping through windows | |
1566 | on all frames, frame is 0. */ | |
1567 | if (FRAMEP (frames)) | |
1568 | frame = XFRAME (frames); | |
1569 | else if (NILP (frames)) | |
1ae1a37d | 1570 | frame = SELECTED_FRAME (); |
7ab12479 | 1571 | else |
44fa5b1e | 1572 | frame = 0; |
89bca612 RS |
1573 | if (frame) |
1574 | frame_arg = Qlambda; | |
f812f9c6 RS |
1575 | else if (XFASTINT (frames) == 0) |
1576 | frame_arg = frames; | |
89bca612 RS |
1577 | else if (EQ (frames, Qvisible)) |
1578 | frame_arg = frames; | |
7ab12479 | 1579 | |
89bca612 RS |
1580 | /* frame_arg is Qlambda to stick to one frame, |
1581 | Qvisible to consider all visible frames, | |
1582 | or Qt otherwise. */ | |
1583 | ||
7ab12479 | 1584 | /* Pick a window to start with. */ |
017b2bad | 1585 | if (WINDOWP (obj)) |
4b206065 | 1586 | w = obj; |
44fa5b1e | 1587 | else if (frame) |
4b206065 | 1588 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1589 | else |
1ae1a37d | 1590 | w = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 JB |
1591 | |
1592 | /* Figure out the last window we're going to mess with. Since | |
1593 | Fnext_window, given the same options, is guaranteed to go in a | |
1594 | ring, we can just use Fprevious_window to find the last one. | |
1595 | ||
1596 | We can't just wait until we hit the first window again, because | |
1597 | it might be deleted. */ | |
1598 | ||
89bca612 | 1599 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1600 | |
7ab12479 | 1601 | best_window = Qnil; |
4b206065 | 1602 | for (;;) |
7ab12479 JB |
1603 | { |
1604 | /* Pick the next window now, since some operations will delete | |
1605 | the current window. */ | |
89bca612 | 1606 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1607 | |
d29a5631 RS |
1608 | /* Note that we do not pay attention here to whether |
1609 | the frame is visible, since Fnext_window skips non-visible frames | |
1610 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1611 | if (! MINI_WINDOW_P (XWINDOW (w)) |
65a04b96 RS |
1612 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
1613 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
1614 | || (mini && minibuf_level > 0)) |
1615 | switch (type) | |
1616 | { | |
1617 | case GET_BUFFER_WINDOW: | |
5c204627 RS |
1618 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj) |
1619 | /* Don't find any minibuffer window | |
1620 | except the one that is currently in use. */ | |
1621 | && (MINI_WINDOW_P (XWINDOW (w)) | |
1622 | ? EQ (w, minibuf_window) : 1)) | |
7ab12479 JB |
1623 | return w; |
1624 | break; | |
1625 | ||
1626 | case GET_LRU_WINDOW: | |
1627 | /* t as arg means consider only full-width windows */ | |
111e5992 | 1628 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w))) |
7ab12479 | 1629 | break; |
7ab12479 JB |
1630 | /* Ignore dedicated windows and minibuffers. */ |
1631 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1632 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1633 | break; |
265a9e55 | 1634 | if (NILP (best_window) |
7ab12479 JB |
1635 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1636 | > XFASTINT (XWINDOW (w)->use_time))) | |
1637 | best_window = w; | |
1638 | break; | |
1639 | ||
1640 | case DELETE_OTHER_WINDOWS: | |
1641 | if (XWINDOW (w) != XWINDOW (obj)) | |
1642 | Fdelete_window (w); | |
1643 | break; | |
1644 | ||
1645 | case DELETE_BUFFER_WINDOWS: | |
1646 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1647 | { | |
3548e138 RS |
1648 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1649 | ||
1650 | /* If this window is dedicated, and in a frame of its own, | |
1651 | kill the frame. */ | |
1652 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1653 | && !NILP (XWINDOW (w)->dedicated) | |
1654 | && other_visible_frames (f)) | |
7ab12479 | 1655 | { |
3548e138 RS |
1656 | /* Skip the other windows on this frame. |
1657 | There might be one, the minibuffer! */ | |
1658 | if (! EQ (w, last_window)) | |
1659 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1660 | { | |
1661 | /* As we go, check for the end of the loop. | |
1662 | We mustn't start going around a second time. */ | |
1663 | if (EQ (next_window, last_window)) | |
1664 | { | |
1665 | last_window = w; | |
1666 | break; | |
1667 | } | |
1668 | next_window = Fnext_window (next_window, | |
1669 | mini ? Qt : Qnil, | |
1670 | frame_arg); | |
1671 | } | |
1672 | /* Now we can safely delete the frame. */ | |
1673 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1674 | } |
1675 | else | |
3548e138 RS |
1676 | /* If we're deleting the buffer displayed in the only window |
1677 | on the frame, find a new buffer to display there. */ | |
1678 | if (NILP (XWINDOW (w)->parent)) | |
1679 | { | |
1680 | Lisp_Object new_buffer; | |
b7354ddf RS |
1681 | new_buffer = Fother_buffer (obj, Qnil, |
1682 | XWINDOW (w)->frame); | |
3548e138 RS |
1683 | if (NILP (new_buffer)) |
1684 | new_buffer | |
1685 | = Fget_buffer_create (build_string ("*scratch*")); | |
1686 | Fset_window_buffer (w, new_buffer); | |
1687 | if (EQ (w, selected_window)) | |
1688 | Fset_buffer (XWINDOW (w)->buffer); | |
1689 | } | |
1690 | else | |
1691 | Fdelete_window (w); | |
7ab12479 JB |
1692 | } |
1693 | break; | |
1694 | ||
1695 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1696 | /* Ignore dedicated windows and minibuffers. */ |
1697 | if (MINI_WINDOW_P (XWINDOW (w)) | |
8801a864 KR |
1698 | || !NILP (XWINDOW (w)->dedicated) |
1699 | || NILP (best_window)) | |
7ab12479 JB |
1700 | break; |
1701 | { | |
1702 | struct window *best_window_ptr = XWINDOW (best_window); | |
1703 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1704 | if (NILP (best_window) |
1705 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1706 | > (XFASTINT (best_window_ptr->height) | |
1707 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1708 | best_window = w; |
1709 | } | |
1710 | break; | |
1711 | ||
1712 | case UNSHOW_BUFFER: | |
1713 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1714 | { | |
1715 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1716 | Lisp_Object another_buffer; |
38ab08d1 | 1717 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
b7354ddf | 1718 | another_buffer = Fother_buffer (obj, Qnil, XWINDOW (w)->frame); |
265a9e55 | 1719 | if (NILP (another_buffer)) |
7ab12479 JB |
1720 | another_buffer |
1721 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1722 | /* If this window is dedicated, and in a frame of its own, |
1723 | kill the frame. */ | |
1724 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1725 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1726 | && other_visible_frames (f)) |
45945a7b RS |
1727 | { |
1728 | /* Skip the other windows on this frame. | |
1729 | There might be one, the minibuffer! */ | |
1730 | if (! EQ (w, last_window)) | |
1731 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1732 | { | |
1733 | /* As we go, check for the end of the loop. | |
1734 | We mustn't start going around a second time. */ | |
1735 | if (EQ (next_window, last_window)) | |
1736 | { | |
1737 | last_window = w; | |
1738 | break; | |
1739 | } | |
1740 | next_window = Fnext_window (next_window, | |
1741 | mini ? Qt : Qnil, | |
1742 | frame_arg); | |
1743 | } | |
1744 | /* Now we can safely delete the frame. */ | |
1745 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1746 | } | |
38ab08d1 | 1747 | else |
38ab08d1 RS |
1748 | { |
1749 | /* Otherwise show a different buffer in the window. */ | |
1750 | XWINDOW (w)->dedicated = Qnil; | |
1751 | Fset_window_buffer (w, another_buffer); | |
1752 | if (EQ (w, selected_window)) | |
1753 | Fset_buffer (XWINDOW (w)->buffer); | |
1754 | } | |
7ab12479 JB |
1755 | } |
1756 | break; | |
3f8ab7bd RS |
1757 | |
1758 | /* Check for a window that has a killed buffer. */ | |
1759 | case CHECK_ALL_WINDOWS: | |
1760 | if (! NILP (XWINDOW (w)->buffer) | |
1761 | && NILP (XBUFFER (XWINDOW (w)->buffer)->name)) | |
1762 | abort (); | |
7ab12479 | 1763 | } |
4b206065 JB |
1764 | |
1765 | if (EQ (w, last_window)) | |
1766 | break; | |
1767 | ||
7ab12479 JB |
1768 | w = next_window; |
1769 | } | |
7ab12479 JB |
1770 | |
1771 | return best_window; | |
37962e60 | 1772 | } |
605be8af | 1773 | |
3f8ab7bd RS |
1774 | /* Used for debugging. Abort if any window has a dead buffer. */ |
1775 | ||
233a4a2c | 1776 | void |
3f8ab7bd RS |
1777 | check_all_windows () |
1778 | { | |
1779 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
1780 | } | |
1781 | ||
7ab12479 JB |
1782 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1783 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1784 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1785 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1786 | If FRAME is t, search all frames.\n\ |
1787 | If FRAME is nil, search only the selected frame.\n\ | |
1788 | If FRAME is a frame, search only that frame.") | |
1789 | (frame) | |
1790 | Lisp_Object frame; | |
7ab12479 JB |
1791 | { |
1792 | register Lisp_Object w; | |
1793 | /* First try for a window that is full-width */ | |
89bca612 | 1794 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1795 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1796 | return w; |
1797 | /* If none of them, try the rest */ | |
89bca612 | 1798 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1799 | } |
1800 | ||
1801 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1802 | "Return the largest window in area.\n\ | |
89bca612 | 1803 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1804 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1805 | If FRAME is t, search all frames.\n\ |
1806 | If FRAME is nil, search only the selected frame.\n\ | |
1807 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1808 | (frame) |
1809 | Lisp_Object frame; | |
7ab12479 JB |
1810 | { |
1811 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1812 | frame); |
7ab12479 JB |
1813 | } |
1814 | ||
1815 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1816 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1817 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1818 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1819 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1820 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1821 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1822 | (buffer, frame) |
1823 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1824 | { |
1825 | buffer = Fget_buffer (buffer); | |
017b2bad | 1826 | if (BUFFERP (buffer)) |
44fa5b1e | 1827 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1828 | else |
1829 | return Qnil; | |
1830 | } | |
1831 | ||
1832 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1833 | 0, 1, "", | |
44fa5b1e | 1834 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1835 | Only the frame WINDOW is on is affected.\n\ |
1836 | This function tries to reduce display jumps\n\ | |
1837 | by keeping the text previously visible in WINDOW\n\ | |
1838 | in the same place on the frame. Doing this depends on\n\ | |
1839 | the value of (window-start WINDOW), so if calling this function\n\ | |
1840 | in a program gives strange scrolling, make sure the window-start\n\ | |
1841 | value is reasonable when this function is called.") | |
7ab12479 JB |
1842 | (window) |
1843 | Lisp_Object window; | |
1844 | { | |
1845 | struct window *w; | |
00d3d838 | 1846 | int startpos; |
7ab12479 JB |
1847 | int top; |
1848 | ||
265a9e55 | 1849 | if (NILP (window)) |
7ab12479 JB |
1850 | window = selected_window; |
1851 | else | |
605be8af | 1852 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1853 | |
1854 | w = XWINDOW (window); | |
a2b38b3c | 1855 | |
00d3d838 | 1856 | startpos = marker_position (w->start); |
5500c422 | 1857 | top = XFASTINT (w->top) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 1858 | |
a2b38b3c RS |
1859 | if (MINI_WINDOW_P (w) && top > 0) |
1860 | error ("Can't expand minibuffer to full frame"); | |
1861 | ||
70728a80 | 1862 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1863 | |
00d3d838 KH |
1864 | /* Try to minimize scrolling, by setting the window start to the point |
1865 | will cause the text at the old window start to be at the same place | |
1866 | on the frame. But don't try to do this if the window start is | |
1867 | outside the visible portion (as might happen when the display is | |
1868 | not current, due to typeahead). */ | |
1869 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1870 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1871 | { | |
1872 | struct position pos; | |
1873 | struct buffer *obuf = current_buffer; | |
1874 | ||
1875 | Fset_buffer (w->buffer); | |
1876 | /* This computation used to temporarily move point, but that can | |
1877 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1878 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 1879 | |
b73ea88e RS |
1880 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
1881 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
1882 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 1883 | : Qnil); |
80622eec RS |
1884 | /* We need to do this, so that the window-scroll-functions |
1885 | get called. */ | |
4d047f50 | 1886 | w->optional_new_start = Qt; |
00d3d838 KH |
1887 | |
1888 | set_buffer_internal (obuf); | |
1889 | } | |
5500c422 | 1890 | |
7ab12479 JB |
1891 | return Qnil; |
1892 | } | |
1893 | ||
1894 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1895 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1896 | "Delete all windows showing BUFFER.\n\ |
1897 | Optional second argument FRAME controls which frames are affected.\n\ | |
c520265e RS |
1898 | If optional argument FRAME is `visible', search all visible frames.\n\ |
1899 | If FRAME is 0, search all visible and iconified frames.\n\ | |
1900 | If FRAME is nil, search all frames.\n\ | |
1901 | If FRAME is t, search only the selected frame.\n\ | |
1902 | If FRAME is a frame, search only that frame.") | |
26f6279d JB |
1903 | (buffer, frame) |
1904 | Lisp_Object buffer, frame; | |
7ab12479 | 1905 | { |
26f6279d JB |
1906 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1907 | expects. */ | |
c520265e RS |
1908 | if (NILP (frame)) |
1909 | frame = Qt; | |
1910 | else if (EQ (frame, Qt)) | |
1911 | frame = Qnil; | |
26f6279d | 1912 | |
265a9e55 | 1913 | if (!NILP (buffer)) |
7ab12479 JB |
1914 | { |
1915 | buffer = Fget_buffer (buffer); | |
1916 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1917 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 1918 | } |
5500c422 | 1919 | |
7ab12479 JB |
1920 | return Qnil; |
1921 | } | |
1922 | ||
1923 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1924 | Sreplace_buffer_in_windows, | |
1925 | 1, 1, "bReplace buffer in windows: ", | |
1926 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1927 | (buffer) | |
1928 | Lisp_Object buffer; | |
1929 | { | |
265a9e55 | 1930 | if (!NILP (buffer)) |
7ab12479 JB |
1931 | { |
1932 | buffer = Fget_buffer (buffer); | |
1933 | CHECK_BUFFER (buffer, 0); | |
1934 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1935 | } | |
1936 | return Qnil; | |
1937 | } | |
ff58478b RS |
1938 | |
1939 | /* Replace BUFFER with some other buffer in all windows | |
1940 | of all frames, even those on other keyboards. */ | |
1941 | ||
1942 | void | |
1943 | replace_buffer_in_all_windows (buffer) | |
1944 | Lisp_Object buffer; | |
1945 | { | |
27abb84f | 1946 | #ifdef MULTI_KBOARD |
ff58478b RS |
1947 | Lisp_Object tail, frame; |
1948 | ||
ff58478b RS |
1949 | /* A single call to window_loop won't do the job |
1950 | because it only considers frames on the current keyboard. | |
1951 | So loop manually over frames, and handle each one. */ | |
1952 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 1953 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 1954 | #else |
db7f721d | 1955 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
1956 | #endif |
1957 | } | |
7ab12479 JB |
1958 | \f |
1959 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1960 | |
1961 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1962 | might crash Emacs. */ | |
5500c422 | 1963 | |
a481b3ea JB |
1964 | #define MIN_SAFE_WINDOW_WIDTH (2) |
1965 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1966 | ||
1967 | /* Make sure that window_min_height and window_min_width are | |
1968 | not too small; if they are, set them to safe minima. */ | |
1969 | ||
1970 | static void | |
1971 | check_min_window_sizes () | |
1972 | { | |
1973 | /* Smaller values might permit a crash. */ | |
1974 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1975 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1976 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1977 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1978 | } | |
1979 | ||
1980 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1981 | minimum allowable size. */ | |
5500c422 | 1982 | |
605be8af | 1983 | void |
a481b3ea | 1984 | check_frame_size (frame, rows, cols) |
605be8af JB |
1985 | FRAME_PTR frame; |
1986 | int *rows, *cols; | |
a481b3ea | 1987 | { |
628df3bf | 1988 | /* For height, we have to see: |
37962e60 | 1989 | whether the frame has a minibuffer, |
628df3bf JB |
1990 | whether it wants a mode line, and |
1991 | whether it has a menu bar. */ | |
a481b3ea | 1992 | int min_height = |
79f92720 JB |
1993 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1994 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1995 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
5500c422 GM |
1996 | |
1997 | if (FRAME_TOP_MARGIN (frame) > 0) | |
1998 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
1999 | |
2000 | if (*rows < min_height) | |
2001 | *rows = min_height; | |
2002 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2003 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2004 | } | |
2005 | ||
c1636aa6 | 2006 | |
233a4a2c GM |
2007 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2008 | check if W's width can be changed, otherwise check W's height. | |
2009 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2010 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2011 | either. */ | |
c1636aa6 | 2012 | |
233a4a2c GM |
2013 | static int |
2014 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2015 | struct window *w; | |
2016 | int width_p, check_siblings_p; | |
2017 | { | |
2018 | int fixed_p; | |
2019 | struct window *c; | |
2020 | ||
2021 | if (!NILP (w->hchild)) | |
2022 | { | |
2023 | c = XWINDOW (w->hchild); | |
2024 | ||
2025 | if (width_p) | |
2026 | { | |
2027 | /* A horiz. combination is fixed-width if all of if its | |
2028 | children are. */ | |
2029 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2030 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2031 | fixed_p = c == NULL; | |
2032 | } | |
2033 | else | |
2034 | { | |
2035 | /* A horiz. combination is fixed-height if one of if its | |
2036 | children is. */ | |
2037 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2038 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2039 | fixed_p = c != NULL; | |
2040 | } | |
2041 | } | |
2042 | else if (!NILP (w->vchild)) | |
2043 | { | |
2044 | c = XWINDOW (w->vchild); | |
2045 | ||
2046 | if (width_p) | |
2047 | { | |
2048 | /* A vert. combination is fixed-width if one of if its | |
2049 | children is. */ | |
2050 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2051 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2052 | fixed_p = c != NULL; | |
2053 | } | |
2054 | else | |
2055 | { | |
2056 | /* A vert. combination is fixed-height if all of if its | |
2057 | children are. */ | |
2058 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2059 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2060 | fixed_p = c == NULL; | |
2061 | } | |
2062 | } | |
2063 | else if (BUFFERP (w->buffer)) | |
2064 | { | |
a34dfd12 GM |
2065 | if (w->height_fixed_p && !width_p) |
2066 | fixed_p = 1; | |
2067 | else | |
233a4a2c | 2068 | { |
a34dfd12 GM |
2069 | struct buffer *old = current_buffer; |
2070 | Lisp_Object val; | |
2071 | ||
2072 | current_buffer = XBUFFER (w->buffer); | |
2073 | val = find_symbol_value (Qwindow_size_fixed); | |
2074 | current_buffer = old; | |
2075 | ||
2076 | fixed_p = 0; | |
2077 | if (!EQ (val, Qunbound)) | |
2078 | { | |
2079 | fixed_p = !NILP (val); | |
2080 | ||
2081 | if (fixed_p | |
2082 | && ((EQ (val, Qheight) && width_p) | |
2083 | || (EQ (val, Qwidth) && !width_p))) | |
2084 | fixed_p = 0; | |
2085 | } | |
233a4a2c GM |
2086 | } |
2087 | ||
2088 | /* Can't tell if this one is resizable without looking at | |
2089 | siblings. If all siblings are fixed-size this one is too. */ | |
2090 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2091 | { | |
2092 | Lisp_Object child; | |
2093 | ||
2094 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) | |
2095 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2096 | break; | |
2097 | ||
2098 | if (NILP (child)) | |
2099 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2100 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2101 | break; | |
2102 | ||
2103 | if (NILP (child)) | |
2104 | fixed_p = 1; | |
2105 | } | |
2106 | } | |
2107 | else | |
2108 | fixed_p = 1; | |
2109 | ||
2110 | return fixed_p; | |
2111 | } | |
2112 | ||
2113 | ||
2114 | /* Return the minimum size of window W, not taking fixed-width windows | |
2115 | into account. WIDTH_P non-zero means return the minimum width, | |
2116 | otherwise return the minimum height. If W is a combination window, | |
2117 | compute the minimum size from the minimum sizes of W's children. */ | |
2118 | ||
2119 | static int | |
2120 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2121 | struct window *w; |
2122 | int width_p; | |
2123 | { | |
233a4a2c | 2124 | struct window *c; |
c1636aa6 GM |
2125 | int size; |
2126 | ||
233a4a2c GM |
2127 | if (!NILP (w->hchild)) |
2128 | { | |
2129 | c = XWINDOW (w->hchild); | |
2130 | size = 0; | |
2131 | ||
2132 | if (width_p) | |
2133 | { | |
2134 | /* The min width of a horizontal combination is | |
2135 | the sum of the min widths of its children. */ | |
2136 | while (c) | |
2137 | { | |
2138 | size += window_min_size_1 (c, width_p); | |
2139 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2140 | } | |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | /* The min height a horizontal combination equals | |
2145 | the maximum of all min height of its children. */ | |
2146 | while (c) | |
2147 | { | |
2148 | int min_size = window_min_size_1 (c, width_p); | |
2149 | size = max (min_size, size); | |
2150 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2151 | } | |
2152 | } | |
2153 | } | |
2154 | else if (!NILP (w->vchild)) | |
2155 | { | |
2156 | c = XWINDOW (w->vchild); | |
2157 | size = 0; | |
2158 | ||
2159 | if (width_p) | |
2160 | { | |
2161 | /* The min width of a vertical combination is | |
2162 | the maximum of the min widths of its children. */ | |
2163 | while (c) | |
2164 | { | |
2165 | int min_size = window_min_size_1 (c, width_p); | |
2166 | size = max (min_size, size); | |
2167 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2168 | } | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | /* The min height of a vertical combination equals | |
2173 | the sum of the min height of its children. */ | |
2174 | while (c) | |
2175 | { | |
2176 | size += window_min_size_1 (c, width_p); | |
2177 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2178 | } | |
2179 | } | |
2180 | } | |
c1636aa6 GM |
2181 | else |
2182 | { | |
233a4a2c GM |
2183 | if (width_p) |
2184 | size = window_min_width; | |
c1636aa6 | 2185 | else |
233a4a2c GM |
2186 | { |
2187 | if (MINI_WINDOW_P (w) | |
2188 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2189 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2190 | size = 1; |
2191 | else | |
2192 | size = window_min_height; | |
2193 | } | |
c1636aa6 GM |
2194 | } |
2195 | ||
2196 | return size; | |
2197 | } | |
2198 | ||
2199 | ||
233a4a2c GM |
2200 | /* Return the minimum size of window W, taking fixed-size windows into |
2201 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2202 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2203 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2204 | unless FIXED is null. */ | |
7ab12479 | 2205 | |
233a4a2c | 2206 | static int |
f984d4fc | 2207 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2208 | struct window *w; |
f984d4fc | 2209 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2210 | { |
2211 | int size, fixed_p; | |
2212 | ||
f984d4fc GM |
2213 | if (ignore_fixed_p) |
2214 | fixed_p = 0; | |
2215 | else | |
2216 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
2217 | ||
233a4a2c GM |
2218 | if (fixed) |
2219 | *fixed = fixed_p; | |
2220 | ||
2221 | if (fixed_p) | |
2222 | size = width_p ? XFASTINT (w->width) : XFASTINT (w->height); | |
2223 | else | |
2224 | size = window_min_size_1 (w, width_p); | |
f984d4fc | 2225 | |
233a4a2c GM |
2226 | return size; |
2227 | } | |
2228 | ||
2229 | ||
2230 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set | |
2231 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
2232 | keep their proportionate size relative to WINDOW. Propagate | |
2233 | WINDOW's top or left edge position to children. Delete windows | |
2234 | that become too small unless NODELETE_P is non-zero. */ | |
2235 | ||
2236 | static void | |
2237 | size_window (window, size, width_p, nodelete_p) | |
7ab12479 | 2238 | Lisp_Object window; |
233a4a2c | 2239 | int size, width_p, nodelete_p; |
7ab12479 | 2240 | { |
233a4a2c GM |
2241 | struct window *w = XWINDOW (window); |
2242 | struct window *c; | |
2243 | Lisp_Object child, *forward, *sideward; | |
2244 | int old_size, min_size; | |
7ab12479 | 2245 | |
a481b3ea | 2246 | check_min_window_sizes (); |
233a4a2c | 2247 | |
b5f05b50 GM |
2248 | /* If the window has been "too small" at one point, |
2249 | don't delete it for being "too small" in the future. | |
2250 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2251 | if (width_p) |
2252 | { | |
2253 | old_size = XFASTINT (w->width); | |
2254 | min_size = window_min_width; | |
2255 | } | |
2256 | else | |
2257 | { | |
2258 | old_size = XFASTINT (w->height); | |
2259 | min_size = window_min_height; | |
2260 | } | |
2261 | ||
2262 | if (old_size < window_min_width) | |
b5f05b50 GM |
2263 | w->too_small_ok = Qt; |
2264 | ||
233a4a2c GM |
2265 | /* Maybe delete WINDOW if it's too small. */ |
2266 | if (!nodelete_p && !NILP (w->parent)) | |
7ab12479 | 2267 | { |
233a4a2c | 2268 | int min_size; |
b5f05b50 GM |
2269 | |
2270 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) | |
233a4a2c | 2271 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
b5f05b50 | 2272 | else |
233a4a2c | 2273 | min_size = width_p ? window_min_width : window_min_height; |
b5f05b50 | 2274 | |
233a4a2c | 2275 | if (size < min_size) |
c1636aa6 GM |
2276 | { |
2277 | delete_window (window); | |
2278 | return; | |
2279 | } | |
7ab12479 JB |
2280 | } |
2281 | ||
233a4a2c | 2282 | /* Set redisplay hints. */ |
d834a2e9 | 2283 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2284 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2285 | windows_or_buffers_changed++; |
29aeee73 RS |
2286 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
2287 | ||
233a4a2c GM |
2288 | if (width_p) |
2289 | { | |
2290 | sideward = &w->vchild; | |
2291 | forward = &w->hchild; | |
2292 | XSETFASTINT (w->width, size); | |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | sideward = &w->hchild; | |
2297 | forward = &w->vchild; | |
2298 | XSETFASTINT (w->height, size); | |
2299 | } | |
2300 | ||
2301 | if (!NILP (*sideward)) | |
7ab12479 | 2302 | { |
233a4a2c | 2303 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 2304 | { |
233a4a2c GM |
2305 | c = XWINDOW (child); |
2306 | if (width_p) | |
2307 | c->left = w->left; | |
2308 | else | |
2309 | c->top = w->top; | |
2310 | size_window (child, size, width_p, nodelete_p); | |
7ab12479 JB |
2311 | } |
2312 | } | |
233a4a2c | 2313 | else if (!NILP (*forward)) |
7ab12479 | 2314 | { |
233a4a2c GM |
2315 | int fixed_size, each, extra, n; |
2316 | int resize_fixed_p, nfixed; | |
2317 | int last_pos, first_pos, nchildren; | |
2318 | ||
2319 | /* Determine the fixed-size portion of the this window, and the | |
2320 | number of child windows. */ | |
2321 | fixed_size = nchildren = nfixed = 0; | |
2322 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) | |
7ab12479 JB |
2323 | { |
2324 | c = XWINDOW (child); | |
233a4a2c GM |
2325 | if (window_fixed_size_p (c, width_p, 0)) |
2326 | { | |
2327 | fixed_size += (width_p | |
2328 | ? XFASTINT (c->width) : XFASTINT (c->height)); | |
2329 | ++nfixed; | |
2330 | } | |
2331 | } | |
7ab12479 | 2332 | |
233a4a2c GM |
2333 | /* If the new size is smaller than fixed_size, or if there |
2334 | aren't any resizable windows, allow resizing fixed-size | |
2335 | windows. */ | |
2336 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
2337 | ||
2338 | /* Compute how many lines/columns to add to each child. The | |
2339 | value of extra takes care of rounding errors. */ | |
2340 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
2341 | each = (size - old_size) / n; | |
2342 | extra = (size - old_size) - n * each; | |
2343 | ||
2344 | /* Compute new children heights and edge positions. */ | |
2345 | first_pos = width_p ? XFASTINT (w->left) : XFASTINT (w->top); | |
2346 | last_pos = first_pos; | |
2347 | for (child = *forward; !NILP (child); child = c->next) | |
2348 | { | |
2349 | int new_size, old_size; | |
2350 | ||
2351 | c = XWINDOW (child); | |
2352 | old_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2353 | new_size = old_size; | |
7ab12479 | 2354 | |
233a4a2c GM |
2355 | /* The top or left edge position of this child equals the |
2356 | bottom or right edge of its predecessor. */ | |
2357 | if (width_p) | |
2358 | c->left = make_number (last_pos); | |
2359 | else | |
2360 | c->top = make_number (last_pos); | |
7ab12479 | 2361 | |
233a4a2c GM |
2362 | /* If this child can be resized, do it. */ |
2363 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
2364 | { | |
2365 | new_size = old_size + each + extra; | |
2366 | extra = 0; | |
2367 | } | |
2368 | ||
2369 | /* Set new height. Note that size_window also propagates | |
2370 | edge positions to children, so it's not a no-op if we | |
2371 | didn't change the child's size. */ | |
2372 | size_window (child, new_size, width_p, 1); | |
2373 | ||
2374 | /* Remember the bottom/right edge position of this child; it | |
2375 | will be used to set the top/left edge of the next child. */ | |
2376 | last_pos += new_size; | |
7ab12479 | 2377 | } |
233a4a2c GM |
2378 | |
2379 | /* We should have covered the parent exactly with child windows. */ | |
2380 | xassert (size == last_pos - first_pos); | |
2381 | ||
7ab12479 | 2382 | /* Now delete any children that became too small. */ |
233a4a2c GM |
2383 | if (!nodelete_p) |
2384 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 2385 | { |
233a4a2c GM |
2386 | int child_size; |
2387 | c = XWINDOW (child); | |
2388 | child_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height); | |
2389 | size_window (child, child_size, width_p, 0); | |
7ab12479 JB |
2390 | } |
2391 | } | |
2392 | } | |
2393 | ||
233a4a2c GM |
2394 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
2395 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2396 | that become too small in the process. (The caller should check | |
2397 | later and do so if appropriate.) */ | |
7ab12479 | 2398 | |
5e14b1fc | 2399 | void |
233a4a2c | 2400 | set_window_height (window, height, nodelete) |
7ab12479 | 2401 | Lisp_Object window; |
233a4a2c | 2402 | int height; |
7ab12479 JB |
2403 | int nodelete; |
2404 | { | |
233a4a2c GM |
2405 | size_window (window, height, 0, nodelete); |
2406 | } | |
7ab12479 | 2407 | |
7ab12479 | 2408 | |
233a4a2c GM |
2409 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
2410 | WINDOW's children. NODELETE non-zero means don't delete windows | |
2411 | that become too small in the process. (The caller should check | |
2412 | later and do so if appropriate.) */ | |
7ab12479 | 2413 | |
233a4a2c GM |
2414 | void |
2415 | set_window_width (window, width, nodelete) | |
2416 | Lisp_Object window; | |
2417 | int width; | |
2418 | int nodelete; | |
2419 | { | |
2420 | size_window (window, width, 1, nodelete); | |
7ab12479 | 2421 | } |
233a4a2c | 2422 | |
7ab12479 | 2423 | \f |
1d8d96fa | 2424 | int window_select_count; |
7ab12479 | 2425 | |
5b03d3c0 RS |
2426 | Lisp_Object |
2427 | Fset_window_buffer_unwind (obuf) | |
2428 | Lisp_Object obuf; | |
2429 | { | |
2430 | Fset_buffer (obuf); | |
2431 | return Qnil; | |
2432 | } | |
2433 | ||
7ab12479 | 2434 | |
5500c422 GM |
2435 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2436 | means it's allowed to run hooks. See make_frame for a case where | |
2437 | it's not allowed. */ | |
7ab12479 | 2438 | |
5500c422 GM |
2439 | void |
2440 | set_window_buffer (window, buffer, run_hooks_p) | |
2441 | Lisp_Object window, buffer; | |
2442 | int run_hooks_p; | |
2443 | { | |
2444 | struct window *w = XWINDOW (window); | |
2445 | struct buffer *b = XBUFFER (buffer); | |
2446 | int count = specpdl_ptr - specpdl; | |
7ab12479 JB |
2447 | |
2448 | w->buffer = buffer; | |
86e48436 RS |
2449 | |
2450 | if (EQ (window, selected_window)) | |
5500c422 | 2451 | b->last_selected_window = window; |
beb4e312 RS |
2452 | |
2453 | /* Update time stamps of buffer display. */ | |
5500c422 GM |
2454 | if (INTEGERP (b->display_count)) |
2455 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
2456 | b->display_time = Fcurrent_time (); | |
86e48436 | 2457 | |
d834a2e9 | 2458 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
2459 | XSETFASTINT (w->window_end_vpos, 0); |
2460 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 2461 | w->window_end_valid = Qnil; |
dba06815 | 2462 | XSETFASTINT (w->hscroll, 0); |
5500c422 | 2463 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 2464 | set_marker_restricted (w->start, |
5500c422 | 2465 | make_number (b->last_window_start), |
7ab12479 JB |
2466 | buffer); |
2467 | w->start_at_line_beg = Qnil; | |
e36ab06b | 2468 | w->force_start = Qnil; |
d834a2e9 | 2469 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2470 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 2471 | windows_or_buffers_changed++; |
5b03d3c0 RS |
2472 | |
2473 | /* We must select BUFFER for running the window-scroll-functions. | |
2474 | If WINDOW is selected, switch permanently. | |
2475 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
2476 | if (EQ (window, selected_window)) |
2477 | Fset_buffer (buffer); | |
5b03d3c0 RS |
2478 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
2479 | because that might itself be a local variable. */ | |
2480 | else if (window_initialized) | |
2481 | { | |
2482 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
2483 | Fset_buffer (buffer); | |
2484 | } | |
2485 | ||
5500c422 | 2486 | /* Set left and right marginal area width from buffer. */ |
cfa22082 | 2487 | Fset_window_margins (window, b->left_margin_width, b->right_margin_width); |
7ab12479 | 2488 | |
5500c422 GM |
2489 | if (run_hooks_p) |
2490 | { | |
2491 | if (! NILP (Vwindow_scroll_functions)) | |
2492 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
2493 | Fmarker_position (w->start)); | |
2494 | ||
2495 | if (! NILP (Vwindow_configuration_change_hook) | |
2496 | && ! NILP (Vrun_hooks)) | |
2497 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2498 | } | |
543f5fb1 | 2499 | |
5b03d3c0 | 2500 | unbind_to (count, Qnil); |
5500c422 | 2501 | } |
5b03d3c0 | 2502 | |
5500c422 GM |
2503 | |
2504 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
2505 | "Make WINDOW display BUFFER as its contents.\n\ | |
2506 | BUFFER can be a buffer or buffer name.") | |
2507 | (window, buffer) | |
2508 | register Lisp_Object window, buffer; | |
2509 | { | |
2510 | register Lisp_Object tem; | |
2511 | register struct window *w = decode_window (window); | |
5500c422 | 2512 | |
bed0c171 | 2513 | XSETWINDOW (window, w); |
5500c422 GM |
2514 | buffer = Fget_buffer (buffer); |
2515 | CHECK_BUFFER (buffer, 1); | |
2516 | ||
2517 | if (NILP (XBUFFER (buffer)->name)) | |
2518 | error ("Attempt to display deleted buffer"); | |
2519 | ||
2520 | tem = w->buffer; | |
2521 | if (NILP (tem)) | |
2522 | error ("Window is deleted"); | |
2523 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
2524 | is first being set up. */ | |
2525 | { | |
2526 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
2527 | error ("Window is dedicated to `%s'", | |
2528 | XSTRING (XBUFFER (tem)->name)->data); | |
2529 | ||
2530 | unshow_buffer (w); | |
2531 | } | |
2532 | ||
2533 | set_window_buffer (window, buffer, 1); | |
7ab12479 JB |
2534 | return Qnil; |
2535 | } | |
2536 | ||
2537 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
2538 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
beb4e312 RS |
2539 | If WINDOW is not already selected, also make WINDOW's buffer current.\n\ |
2540 | Note that the main editor command loop\n\ | |
2541 | selects the buffer of the selected window before each command.") | |
7ab12479 JB |
2542 | (window) |
2543 | register Lisp_Object window; | |
b7354ddf RS |
2544 | { |
2545 | return select_window_1 (window, 1); | |
2546 | } | |
2547 | \f | |
719eaeb1 GM |
2548 | /* Note that selected_window can be nil |
2549 | when this is called from Fset_window_configuration. */ | |
2550 | ||
b7354ddf RS |
2551 | static Lisp_Object |
2552 | select_window_1 (window, recordflag) | |
2553 | register Lisp_Object window; | |
2554 | int recordflag; | |
7ab12479 JB |
2555 | { |
2556 | register struct window *w; | |
719eaeb1 | 2557 | register struct window *ow; |
1ae1a37d | 2558 | struct frame *sf; |
7ab12479 | 2559 | |
605be8af | 2560 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2561 | |
2562 | w = XWINDOW (window); | |
2563 | ||
265a9e55 | 2564 | if (NILP (w->buffer)) |
7ab12479 JB |
2565 | error ("Trying to select deleted window or non-leaf window"); |
2566 | ||
d834a2e9 | 2567 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2568 | if (EQ (window, selected_window)) |
2569 | return window; | |
2570 | ||
719eaeb1 GM |
2571 | if (!NILP (selected_window)) |
2572 | { | |
2573 | ow = XWINDOW (selected_window); | |
2574 | if (! NILP (ow->buffer)) | |
2575 | set_marker_both (ow->pointm, ow->buffer, | |
2576 | BUF_PT (XBUFFER (ow->buffer)), | |
2577 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
2578 | } | |
7ab12479 JB |
2579 | |
2580 | selected_window = window; | |
1ae1a37d GM |
2581 | sf = SELECTED_FRAME (); |
2582 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
7ab12479 | 2583 | { |
44fa5b1e | 2584 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2585 | /* Use this rather than Fhandle_switch_frame |
2586 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2587 | move around in the state where a minibuffer in a separate | |
2588 | frame is active. */ | |
2589 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2590 | } |
2591 | else | |
1ae1a37d | 2592 | sf->selected_window = window; |
7ab12479 | 2593 | |
b7354ddf RS |
2594 | if (recordflag) |
2595 | record_buffer (w->buffer); | |
7ab12479 JB |
2596 | Fset_buffer (w->buffer); |
2597 | ||
86e48436 RS |
2598 | XBUFFER (w->buffer)->last_selected_window = window; |
2599 | ||
7ab12479 JB |
2600 | /* Go to the point recorded in the window. |
2601 | This is important when the buffer is in more | |
2602 | than one window. It also matters when | |
2603 | redisplay_window has altered point after scrolling, | |
2604 | because it makes the change only in the window. */ | |
2605 | { | |
2606 | register int new_point = marker_position (w->pointm); | |
2607 | if (new_point < BEGV) | |
2608 | SET_PT (BEGV); | |
a9c95e08 | 2609 | else if (new_point > ZV) |
7ab12479 JB |
2610 | SET_PT (ZV); |
2611 | else | |
2612 | SET_PT (new_point); | |
2613 | } | |
2614 | ||
2615 | windows_or_buffers_changed++; | |
2616 | return window; | |
2617 | } | |
b7354ddf | 2618 | \f |
441a127e RS |
2619 | /* Deiconify the frame containing the window WINDOW, |
2620 | unless it is the selected frame; | |
2621 | then return WINDOW. | |
2622 | ||
2623 | The reason for the exception for the selected frame | |
2624 | is that it seems better not to change the selected frames visibility | |
2625 | merely because of displaying a different buffer in it. | |
2626 | The deiconification is useful when a buffer gets shown in | |
2627 | another frame that you were not using lately. */ | |
d07f802a RS |
2628 | |
2629 | static Lisp_Object | |
2630 | display_buffer_1 (window) | |
2631 | Lisp_Object window; | |
2632 | { | |
1ae1a37d GM |
2633 | Lisp_Object frame = XWINDOW (window)->frame; |
2634 | FRAME_PTR f = XFRAME (frame); | |
2635 | ||
d07f802a | 2636 | FRAME_SAMPLE_VISIBILITY (f); |
1ae1a37d GM |
2637 | |
2638 | if (!EQ (frame, selected_frame)) | |
60117126 RS |
2639 | { |
2640 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 2641 | Fmake_frame_visible (frame); |
37962e60 | 2642 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 2643 | Fraise_frame (frame); |
60117126 | 2644 | } |
1ae1a37d | 2645 | |
d07f802a RS |
2646 | return window; |
2647 | } | |
2648 | ||
4628f7a4 | 2649 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2650 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2651 | The value is actually t if the frame should be called with default frame\n\ | |
2652 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2653 | See `special-display-buffer-names', and `special-display-regexps'.") |
2654 | (buffer_name) | |
2655 | Lisp_Object buffer_name; | |
2656 | { | |
2657 | Lisp_Object tem; | |
2658 | ||
2659 | CHECK_STRING (buffer_name, 1); | |
2660 | ||
2661 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2662 | if (!NILP (tem)) | |
2663 | return Qt; | |
2664 | ||
2665 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2666 | if (!NILP (tem)) | |
2667 | return XCDR (tem); | |
2668 | ||
2669 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2670 | { | |
2671 | Lisp_Object car = XCAR (tem); | |
2672 | if (STRINGP (car) | |
2673 | && fast_string_match (car, buffer_name) >= 0) | |
2674 | return Qt; | |
2675 | else if (CONSP (car) | |
2676 | && STRINGP (XCAR (car)) | |
2677 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2678 | return XCDR (car); |
4628f7a4 EN |
2679 | } |
2680 | return Qnil; | |
2681 | } | |
2682 | ||
2683 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2684 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2685 | See `same-window-buffer-names' and `same-window-regexps'.") |
2686 | (buffer_name) | |
2687 | Lisp_Object buffer_name; | |
2688 | { | |
2689 | Lisp_Object tem; | |
2690 | ||
2691 | CHECK_STRING (buffer_name, 1); | |
2692 | ||
2693 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2694 | if (!NILP (tem)) | |
2695 | return Qt; | |
2696 | ||
2697 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2698 | if (!NILP (tem)) | |
2699 | return Qt; | |
2700 | ||
2701 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2702 | { | |
2703 | Lisp_Object car = XCAR (tem); | |
2704 | if (STRINGP (car) | |
2705 | && fast_string_match (car, buffer_name) >= 0) | |
2706 | return Qt; | |
2707 | else if (CONSP (car) | |
2708 | && STRINGP (XCAR (car)) | |
2709 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2710 | return Qt; | |
2711 | } | |
2712 | return Qnil; | |
2713 | } | |
2714 | ||
53f76081 RS |
2715 | /* Use B so the default is (other-buffer). */ |
2716 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, | |
2717 | "BDisplay buffer: \nP", | |
7ab12479 JB |
2718 | "Make BUFFER appear in some window but don't select it.\n\ |
2719 | BUFFER can be a buffer or a buffer name.\n\ | |
2720 | If BUFFER is shown already in some window, just use that one,\n\ | |
2721 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2722 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2723 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 RS |
2724 | Returns the window displaying BUFFER.\n\ |
2725 | \n\ | |
2726 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2727 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
53f76081 RS |
2728 | buffer names are handled.\n\ |
2729 | \n\ | |
2730 | If optional argument FRAME is `visible', search all visible frames.\n\ | |
2731 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2732 | If FRAME is t, search all frames.\n\ | |
2733 | If FRAME is a frame, search only that frame.\n\ | |
2734 | If FRAME is nil, search only the selected frame\n\ | |
2735 | (actually the last nonminibuffer frame),\n\ | |
2736 | unless `pop-up-frames' is non-nil,\n\ | |
2737 | which means search visible and iconified frames.") | |
2738 | (buffer, not_this_window, frame) | |
2739 | register Lisp_Object buffer, not_this_window, frame; | |
7ab12479 | 2740 | { |
aee631c2 | 2741 | register Lisp_Object window, tem, swp; |
1ae1a37d | 2742 | struct frame *f; |
7ab12479 | 2743 | |
aee631c2 | 2744 | swp = Qnil; |
7ab12479 JB |
2745 | buffer = Fget_buffer (buffer); |
2746 | CHECK_BUFFER (buffer, 0); | |
2747 | ||
265a9e55 | 2748 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2749 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2750 | ||
265a9e55 | 2751 | if (NILP (not_this_window) |
7ab12479 | 2752 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2753 | return display_buffer_1 (selected_window); |
7ab12479 | 2754 | |
855d8627 RS |
2755 | /* See if the user has specified this buffer should appear |
2756 | in the selected window. */ | |
2757 | if (NILP (not_this_window)) | |
2758 | { | |
aee631c2 RS |
2759 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
2760 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
2761 | { |
2762 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2763 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2764 | } |
855d8627 RS |
2765 | } |
2766 | ||
e8edb3ae | 2767 | /* If pop_up_frames, |
73dc5198 KH |
2768 | look for a window showing BUFFER on any visible or iconified frame. |
2769 | Otherwise search only the current frame. */ | |
53f76081 RS |
2770 | if (! NILP (frame)) |
2771 | tem = frame; | |
2772 | else if (pop_up_frames || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2773 | XSETFASTINT (tem, 0); |
2774 | else | |
73dc5198 KH |
2775 | XSETFRAME (tem, last_nonminibuf_frame); |
2776 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
2777 | if (!NILP (window) |
2778 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 2779 | { |
d07f802a | 2780 | return display_buffer_1 (window); |
f812f9c6 | 2781 | } |
7ab12479 | 2782 | |
a90712c2 | 2783 | /* Certain buffer names get special handling. */ |
aee631c2 | 2784 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 2785 | { |
4628f7a4 EN |
2786 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2787 | if (EQ (tem, Qt)) | |
a90712c2 | 2788 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2789 | if (CONSP (tem)) |
2790 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2791 | } |
2792 | ||
44fa5b1e JB |
2793 | /* If there are no frames open that have more than a minibuffer, |
2794 | we need to create a new frame. */ | |
2795 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2796 | { |
a90712c2 | 2797 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2798 | Fset_window_buffer (window, buffer); |
d07f802a | 2799 | return display_buffer_1 (window); |
7ab12479 | 2800 | } |
7ab12479 | 2801 | |
1ae1a37d | 2802 | f = SELECTED_FRAME (); |
43bad991 | 2803 | if (pop_up_windows |
1ae1a37d | 2804 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
2805 | /* If the current frame is a special display frame, |
2806 | don't try to reuse its windows. */ | |
1ae1a37d | 2807 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 2808 | { |
12cae7c0 KH |
2809 | Lisp_Object frames; |
2810 | ||
37962e60 | 2811 | frames = Qnil; |
1ae1a37d | 2812 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 2813 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2814 | /* Don't try to create a window if would get an error */ |
2815 | if (split_height_threshold < window_min_height << 1) | |
2816 | split_height_threshold = window_min_height << 1; | |
2817 | ||
cee67da9 RS |
2818 | /* Note that both Fget_largest_window and Fget_lru_window |
2819 | ignore minibuffers and dedicated windows. | |
2820 | This means they can return nil. */ | |
7ab12479 | 2821 | |
cee67da9 RS |
2822 | /* If the frame we would try to split cannot be split, |
2823 | try other frames. */ | |
1ae1a37d | 2824 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
2825 | { |
2826 | /* Try visible frames first. */ | |
2827 | window = Fget_largest_window (Qvisible); | |
2828 | /* If that didn't work, try iconified frames. */ | |
2829 | if (NILP (window)) | |
2830 | window = Fget_largest_window (make_number (0)); | |
2831 | if (NILP (window)) | |
2832 | window = Fget_largest_window (Qt); | |
2833 | } | |
2834 | else | |
2835 | window = Fget_largest_window (frames); | |
2836 | ||
92cca945 RS |
2837 | /* If we got a tall enough full-width window that can be split, |
2838 | split it. */ | |
265a9e55 | 2839 | if (!NILP (window) |
92cca945 | 2840 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2841 | && window_height (window) >= split_height_threshold |
111e5992 | 2842 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2843 | window = Fsplit_window (window, Qnil, Qnil); |
2844 | else | |
2845 | { | |
1942f68f RS |
2846 | Lisp_Object upper, lower, other; |
2847 | ||
44fa5b1e | 2848 | window = Fget_lru_window (frames); |
92cca945 RS |
2849 | /* If the LRU window is selected, and big enough, |
2850 | and can be split, split it. */ | |
cee67da9 | 2851 | if (!NILP (window) |
92cca945 | 2852 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2853 | && (EQ (window, selected_window) |
2854 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2855 | && window_height (window) >= window_min_height << 1) |
2856 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 2857 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 2858 | |
cee67da9 | 2859 | /* Try visible frames first. */ |
48d9379d RS |
2860 | if (NILP (window)) |
2861 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
2862 | if (NILP (window)) |
2863 | window = Fget_largest_window (Qvisible); | |
2864 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
2865 | if (NILP (window)) |
2866 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
2867 | if (NILP (window)) |
2868 | window = Fget_largest_window (make_number (0)); | |
2869 | /* Try invisible frames. */ | |
48d9379d RS |
2870 | if (NILP (window)) |
2871 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
2872 | if (NILP (window)) |
2873 | window = Fget_largest_window (Qt); | |
2874 | /* As a last resort, make a new frame. */ | |
2875 | if (NILP (window)) | |
2876 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2877 | /* If window appears above or below another, |
2878 | even out their heights. */ | |
cac66e4f | 2879 | other = upper = lower = Qnil; |
1942f68f RS |
2880 | if (!NILP (XWINDOW (window)->prev)) |
2881 | other = upper = XWINDOW (window)->prev, lower = window; | |
2882 | if (!NILP (XWINDOW (window)->next)) | |
2883 | other = lower = XWINDOW (window)->next, upper = window; | |
2884 | if (!NILP (other) | |
2885 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
296b535c KH |
2886 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
2887 | && (XFASTINT (XWINDOW (other)->height) | |
2888 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 2889 | { |
296b535c KH |
2890 | int total = (XFASTINT (XWINDOW (other)->height) |
2891 | + XFASTINT (XWINDOW (window)->height)); | |
86c8e823 GM |
2892 | enlarge_window (upper, |
2893 | total / 2 - XFASTINT (XWINDOW (upper)->height), | |
f984d4fc | 2894 | 0); |
1942f68f | 2895 | } |
7ab12479 JB |
2896 | } |
2897 | } | |
2898 | else | |
2899 | window = Fget_lru_window (Qnil); | |
2900 | ||
2901 | Fset_window_buffer (window, buffer); | |
d07f802a | 2902 | return display_buffer_1 (window); |
7ab12479 JB |
2903 | } |
2904 | ||
2905 | void | |
2906 | temp_output_buffer_show (buf) | |
2907 | register Lisp_Object buf; | |
2908 | { | |
2909 | register struct buffer *old = current_buffer; | |
2910 | register Lisp_Object window; | |
2911 | register struct window *w; | |
2912 | ||
bccd3dd1 RS |
2913 | XBUFFER (buf)->directory = current_buffer->directory; |
2914 | ||
7ab12479 | 2915 | Fset_buffer (buf); |
c6367666 | 2916 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2917 | BEGV = BEG; |
2918 | ZV = Z; | |
2919 | SET_PT (BEG); | |
b1599b4c | 2920 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
7ab12479 JB |
2921 | set_buffer_internal (old); |
2922 | ||
2923 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2924 | call1 (Vtemp_buffer_show_function, buf); | |
2925 | else | |
2926 | { | |
53f76081 | 2927 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 2928 | |
1ae1a37d | 2929 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 2930 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
2931 | Vminibuf_scroll_window = window; |
2932 | w = XWINDOW (window); | |
d834a2e9 | 2933 | XSETFASTINT (w->hscroll, 0); |
b73ea88e RS |
2934 | set_marker_restricted_both (w->start, buf, 1, 1); |
2935 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 2936 | |
beb4e312 RS |
2937 | /* Run temp-buffer-show-hook, with the chosen window selected |
2938 | and it sbuffer current. */ | |
f52cca03 | 2939 | if (!NILP (Vrun_hooks)) |
2cccc823 | 2940 | { |
f52cca03 RS |
2941 | Lisp_Object tem; |
2942 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2943 | if (!NILP (tem)) |
2944 | { | |
f52cca03 RS |
2945 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2946 | if (!NILP (tem)) | |
2947 | { | |
2948 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
2949 | Lisp_Object prev_window; |
2950 | prev_window = selected_window; | |
2cccc823 | 2951 | |
f52cca03 | 2952 | /* Select the window that was chosen, for running the hook. */ |
65a04b96 | 2953 | record_unwind_protect (Fselect_window, prev_window); |
b7354ddf | 2954 | select_window_1 (window, 0); |
beb4e312 | 2955 | Fset_buffer (w->buffer); |
f52cca03 | 2956 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 2957 | select_window_1 (prev_window, 0); |
f52cca03 RS |
2958 | unbind_to (count, Qnil); |
2959 | } | |
2cccc823 RS |
2960 | } |
2961 | } | |
2962 | } | |
7ab12479 JB |
2963 | } |
2964 | \f | |
dfcf069d | 2965 | static void |
7ab12479 JB |
2966 | make_dummy_parent (window) |
2967 | Lisp_Object window; | |
2968 | { | |
cffec418 | 2969 | Lisp_Object new; |
7ab12479 | 2970 | register struct window *o, *p; |
cffec418 KH |
2971 | register struct Lisp_Vector *vec; |
2972 | int i; | |
7ab12479 | 2973 | |
cffec418 KH |
2974 | o = XWINDOW (window); |
2975 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2976 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2977 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2978 | vec->size = VECSIZE (struct window); | |
2979 | p = (struct window *)vec; | |
2980 | XSETWINDOW (new, p); | |
7ab12479 | 2981 | |
d834a2e9 | 2982 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2983 | |
2984 | /* Put new into window structure in place of window */ | |
2985 | replace_window (window, new); | |
2986 | ||
2987 | o->next = Qnil; | |
2988 | o->prev = Qnil; | |
2989 | o->vchild = Qnil; | |
2990 | o->hchild = Qnil; | |
2991 | o->parent = new; | |
2992 | ||
2993 | p->start = Qnil; | |
2994 | p->pointm = Qnil; | |
2995 | p->buffer = Qnil; | |
2996 | } | |
2997 | ||
2998 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2999 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
3000 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 3001 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
10f96191 RS |
3002 | and put SIZE columns in the first of the pair. In that case,\n\ |
3003 | SIZE includes that window's scroll bar, or the divider column to its right.") | |
77ae0fe3 KH |
3004 | (window, size, horflag) |
3005 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
3006 | { |
3007 | register Lisp_Object new; | |
3008 | register struct window *o, *p; | |
c0807608 | 3009 | FRAME_PTR fo; |
77ae0fe3 | 3010 | register int size_int; |
7ab12479 | 3011 | |
265a9e55 | 3012 | if (NILP (window)) |
7ab12479 JB |
3013 | window = selected_window; |
3014 | else | |
605be8af | 3015 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
3016 | |
3017 | o = XWINDOW (window); | |
c0807608 | 3018 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3019 | |
77ae0fe3 | 3020 | if (NILP (size)) |
7ab12479 | 3021 | { |
265a9e55 | 3022 | if (!NILP (horflag)) |
c0807608 | 3023 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3024 | the usable space in columns by two. |
3025 | We round up, since the left-hand window may include | |
3026 | a dividing line, while the right-hand may not. */ | |
3027 | size_int = (XFASTINT (o->width) + 1) >> 1; | |
7ab12479 | 3028 | else |
77ae0fe3 | 3029 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
3030 | } |
3031 | else | |
3032 | { | |
77ae0fe3 KH |
3033 | CHECK_NUMBER (size, 1); |
3034 | size_int = XINT (size); | |
7ab12479 JB |
3035 | } |
3036 | ||
3037 | if (MINI_WINDOW_P (o)) | |
3038 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3039 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3040 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3041 | |
a481b3ea | 3042 | check_min_window_sizes (); |
7ab12479 | 3043 | |
265a9e55 | 3044 | if (NILP (horflag)) |
7ab12479 | 3045 | { |
77ae0fe3 KH |
3046 | if (size_int < window_min_height) |
3047 | error ("Window height %d too small (after splitting)", size_int); | |
3048 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 3049 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 3050 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
3051 | if (NILP (o->parent) |
3052 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3053 | { |
3054 | make_dummy_parent (window); | |
3055 | new = o->parent; | |
3056 | XWINDOW (new)->vchild = window; | |
3057 | } | |
3058 | } | |
3059 | else | |
3060 | { | |
77ae0fe3 KH |
3061 | if (size_int < window_min_width) |
3062 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
3063 | |
3064 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 3065 | error ("Window width %d too small (after splitting)", |
a59fed7e | 3066 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
3067 | if (NILP (o->parent) |
3068 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3069 | { |
3070 | make_dummy_parent (window); | |
3071 | new = o->parent; | |
3072 | XWINDOW (new)->hchild = window; | |
3073 | } | |
3074 | } | |
3075 | ||
3076 | /* Now we know that window's parent is a vertical combination | |
3077 | if we are dividing vertically, or a horizontal combination | |
3078 | if we are making side-by-side windows */ | |
3079 | ||
3080 | windows_or_buffers_changed++; | |
c0807608 | 3081 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3082 | new = make_window (); |
3083 | p = XWINDOW (new); | |
3084 | ||
44fa5b1e | 3085 | p->frame = o->frame; |
7ab12479 | 3086 | p->next = o->next; |
265a9e55 | 3087 | if (!NILP (p->next)) |
7ab12479 JB |
3088 | XWINDOW (p->next)->prev = new; |
3089 | p->prev = window; | |
3090 | o->next = new; | |
3091 | p->parent = o->parent; | |
3092 | p->buffer = Qt; | |
5500c422 GM |
3093 | p->window_end_valid = Qnil; |
3094 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3095 | |
44fa5b1e | 3096 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3097 | |
265a9e55 | 3098 | if (!NILP (horflag)) |
7ab12479 JB |
3099 | { |
3100 | p->height = o->height; | |
3101 | p->top = o->top; | |
a59fed7e | 3102 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
3103 | XSETFASTINT (o->width, size_int); |
3104 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
3105 | } |
3106 | else | |
3107 | { | |
3108 | p->left = o->left; | |
3109 | p->width = o->width; | |
77ae0fe3 KH |
3110 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
3111 | XSETFASTINT (o->height, size_int); | |
3112 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
3113 | } |
3114 | ||
5500c422 GM |
3115 | /* Adjust glyph matrices. */ |
3116 | adjust_glyphs (fo); | |
543f5fb1 | 3117 | Fset_window_buffer (new, o->buffer); |
7ab12479 JB |
3118 | return new; |
3119 | } | |
3120 | \f | |
3121 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
3122 | "Make current window ARG lines bigger.\n\ | |
3123 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
3124 | (arg, side) |
3125 | register Lisp_Object arg, side; | |
7ab12479 | 3126 | { |
413430c5 | 3127 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3128 | enlarge_window (selected_window, XINT (arg), !NILP (side)); |
543f5fb1 RS |
3129 | |
3130 | if (! NILP (Vwindow_configuration_change_hook)) | |
3131 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3132 | ||
7ab12479 JB |
3133 | return Qnil; |
3134 | } | |
3135 | ||
3136 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
3137 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
3138 | From program, optional second arg non-nil means shrink sideways arg columns.") |
3139 | (arg, side) | |
3140 | register Lisp_Object arg, side; | |
7ab12479 | 3141 | { |
413430c5 | 3142 | CHECK_NUMBER (arg, 0); |
86c8e823 | 3143 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
3144 | |
3145 | if (! NILP (Vwindow_configuration_change_hook)) | |
3146 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3147 | ||
7ab12479 JB |
3148 | return Qnil; |
3149 | } | |
3150 | ||
3151 | int | |
3152 | window_height (window) | |
3153 | Lisp_Object window; | |
3154 | { | |
3155 | register struct window *p = XWINDOW (window); | |
3156 | return XFASTINT (p->height); | |
3157 | } | |
3158 | ||
3159 | int | |
3160 | window_width (window) | |
3161 | Lisp_Object window; | |
3162 | { | |
3163 | register struct window *p = XWINDOW (window); | |
3164 | return XFASTINT (p->width); | |
3165 | } | |
3166 | ||
c1636aa6 | 3167 | |
7ab12479 | 3168 | #define CURBEG(w) \ |
3578db3c | 3169 | *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top)) |
7ab12479 JB |
3170 | |
3171 | #define CURSIZE(w) \ | |
3578db3c | 3172 | *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height)) |
7ab12479 | 3173 | |
233a4a2c GM |
3174 | |
3175 | /* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means | |
3176 | increase its width. Siblings of the selected window are resized to | |
3177 | fullfil the size request. If they become too small in the process, | |
3178 | they will be deleted. */ | |
7ab12479 | 3179 | |
f984d4fc | 3180 | static void |
86c8e823 GM |
3181 | enlarge_window (window, delta, widthflag) |
3182 | Lisp_Object window; | |
233a4a2c | 3183 | int delta, widthflag; |
7ab12479 | 3184 | { |
86c8e823 | 3185 | Lisp_Object parent, next, prev; |
233a4a2c | 3186 | struct window *p; |
3578db3c KR |
3187 | Lisp_Object *sizep; |
3188 | int maximum; | |
5e14b1fc AS |
3189 | int (*sizefun) P_ ((Lisp_Object)) |
3190 | = widthflag ? window_width : window_height; | |
233a4a2c | 3191 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5e14b1fc | 3192 | = (widthflag ? set_window_width : set_window_height); |
7ab12479 | 3193 | |
233a4a2c GM |
3194 | /* Check values of window_min_width and window_min_height for |
3195 | validity. */ | |
a481b3ea | 3196 | check_min_window_sizes (); |
7ab12479 | 3197 | |
233a4a2c | 3198 | /* Give up if this window cannot be resized. */ |
233a4a2c GM |
3199 | if (window_fixed_size_p (XWINDOW (window), widthflag, 1)) |
3200 | error ("Window is not resizable"); | |
3201 | ||
3202 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3203 | while (1) |
3204 | { | |
3205 | p = XWINDOW (window); | |
3206 | parent = p->parent; | |
233a4a2c | 3207 | |
265a9e55 | 3208 | if (NILP (parent)) |
7ab12479 JB |
3209 | { |
3210 | if (widthflag) | |
3211 | error ("No other window to side of this one"); | |
3212 | break; | |
3213 | } | |
233a4a2c GM |
3214 | |
3215 | if (widthflag | |
3216 | ? !NILP (XWINDOW (parent)->hchild) | |
265a9e55 | 3217 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3218 | break; |
233a4a2c | 3219 | |
7ab12479 JB |
3220 | window = parent; |
3221 | } | |
3222 | ||
05c2896a | 3223 | sizep = &CURSIZE (window); |
7ab12479 | 3224 | |
7ab12479 JB |
3225 | { |
3226 | register int maxdelta; | |
7ab12479 | 3227 | |
3578db3c | 3228 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
c1636aa6 GM |
3229 | : !NILP (p->next) ? ((*sizefun) (p->next) |
3230 | - window_min_size (XWINDOW (p->next), | |
f984d4fc | 3231 | widthflag, 0, 0)) |
c1636aa6 GM |
3232 | : !NILP (p->prev) ? ((*sizefun) (p->prev) |
3233 | - window_min_size (XWINDOW (p->prev), | |
f984d4fc | 3234 | widthflag, 0, 0)) |
44fa5b1e JB |
3235 | /* This is a frame with only one window, a minibuffer-only |
3236 | or a minibufferless frame. */ | |
d5783c40 | 3237 | : (delta = 0)); |
7ab12479 JB |
3238 | |
3239 | if (delta > maxdelta) | |
3240 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
3241 | the full frame, or make the only window aside from the |
3242 | minibuffer the full frame. */ | |
7ab12479 | 3243 | delta = maxdelta; |
6b54027b | 3244 | } |
d5783c40 | 3245 | |
3578db3c | 3246 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0)) |
6b54027b | 3247 | { |
543f5fb1 | 3248 | delete_window (window); |
d5783c40 | 3249 | return; |
6b54027b RS |
3250 | } |
3251 | ||
3252 | if (delta == 0) | |
3253 | return; | |
7ab12479 | 3254 | |
db98a733 RS |
3255 | /* Find the total we can get from other siblings. */ |
3256 | maximum = 0; | |
3257 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 3258 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
f984d4fc | 3259 | widthflag, 0, 0); |
db98a733 | 3260 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
c1636aa6 | 3261 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
f984d4fc | 3262 | widthflag, 0, 0); |
db98a733 RS |
3263 | |
3264 | /* If we can get it all from them, do so. */ | |
c6b530ed | 3265 | if (delta <= maximum) |
7ab12479 | 3266 | { |
db98a733 RS |
3267 | Lisp_Object first_unaffected; |
3268 | Lisp_Object first_affected; | |
233a4a2c | 3269 | int fixed_p; |
db98a733 RS |
3270 | |
3271 | next = p->next; | |
3272 | prev = p->prev; | |
3273 | first_affected = window; | |
3274 | /* Look at one sibling at a time, | |
3275 | moving away from this window in both directions alternately, | |
3276 | and take as much as we can get without deleting that sibling. */ | |
233a4a2c | 3277 | while (delta != 0 && (!NILP (next) || !NILP (prev))) |
db98a733 | 3278 | { |
db98a733 RS |
3279 | if (! NILP (next)) |
3280 | { | |
c1636aa6 | 3281 | int this_one = ((*sizefun) (next) |
233a4a2c | 3282 | - window_min_size (XWINDOW (next), |
f984d4fc | 3283 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3284 | if (!fixed_p) |
3285 | { | |
3286 | if (this_one > delta) | |
3287 | this_one = delta; | |
3288 | ||
3289 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
3578db3c | 3290 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 3291 | |
233a4a2c GM |
3292 | delta -= this_one; |
3293 | } | |
3294 | ||
db98a733 RS |
3295 | next = XWINDOW (next)->next; |
3296 | } | |
233a4a2c | 3297 | |
db98a733 RS |
3298 | if (delta == 0) |
3299 | break; | |
233a4a2c | 3300 | |
db98a733 RS |
3301 | if (! NILP (prev)) |
3302 | { | |
c1636aa6 | 3303 | int this_one = ((*sizefun) (prev) |
233a4a2c | 3304 | - window_min_size (XWINDOW (prev), |
f984d4fc | 3305 | widthflag, 0, &fixed_p)); |
233a4a2c GM |
3306 | if (!fixed_p) |
3307 | { | |
3308 | if (this_one > delta) | |
3309 | this_one = delta; | |
3310 | ||
3311 | first_affected = prev; | |
3312 | ||
3313 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
3578db3c | 3314 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
3315 | |
3316 | delta -= this_one; | |
3317 | } | |
3318 | ||
db98a733 RS |
3319 | prev = XWINDOW (prev)->prev; |
3320 | } | |
3321 | } | |
3322 | ||
233a4a2c GM |
3323 | xassert (delta == 0); |
3324 | ||
db98a733 RS |
3325 | /* Now recalculate the edge positions of all the windows affected, |
3326 | based on the new sizes. */ | |
3327 | first_unaffected = next; | |
3328 | prev = first_affected; | |
3329 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
3330 | prev = next, next = XWINDOW (next)->next) | |
3331 | { | |
3578db3c | 3332 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
3333 | /* This does not change size of NEXT, |
3334 | but it propagates the new top edge to its children */ | |
3335 | (*setsizefun) (next, (*sizefun) (next), 0); | |
3336 | } | |
7ab12479 JB |
3337 | } |
3338 | else | |
3339 | { | |
3340 | register int delta1; | |
3341 | register int opht = (*sizefun) (parent); | |
3342 | ||
3343 | /* If trying to grow this window to or beyond size of the parent, | |
3344 | make delta1 so big that, on shrinking back down, | |
3345 | all the siblings end up with less than one line and are deleted. */ | |
3578db3c | 3346 | if (opht <= XINT (*sizep) + delta) |
7ab12479 | 3347 | delta1 = opht * opht * 2; |
7ab12479 | 3348 | else |
233a4a2c GM |
3349 | { |
3350 | /* Otherwise, make delta1 just right so that if we add | |
3351 | delta1 lines to this window and to the parent, and then | |
3352 | shrink the parent back to its original size, the new | |
3353 | proportional size of this window will increase by delta. | |
3354 | ||
3355 | The function size_window will compute the new height h' | |
3356 | of the window from delta1 as: | |
3357 | ||
3358 | e = delta1/n | |
3359 | x = delta1 - delta1/n * n for the 1st resizable child | |
3360 | h' = h + e + x | |
3361 | ||
3362 | where n is the number of children that can be resized. | |
3363 | We can ignore x by choosing a delta1 that is a multiple of | |
3364 | n. We want the height of this window to come out as | |
3365 | ||
3366 | h' = h + delta | |
3367 | ||
3368 | So, delta1 must be | |
3369 | ||
3370 | h + e = h + delta | |
3371 | delta1/n = delta | |
3372 | delta1 = n * delta. | |
3373 | ||
3374 | The number of children n rquals the number of resizable | |
3375 | children of this window + 1 because we know window itself | |
3376 | is resizable (otherwise we would have signalled an error. */ | |
3377 | ||
3378 | struct window *w = XWINDOW (window); | |
3379 | Lisp_Object s; | |
3380 | int n = 1; | |
3381 | ||
3382 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
3383 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3384 | ++n; | |
3385 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
3386 | if (!window_fixed_size_p (XWINDOW (s), widthflag, 0)) | |
3387 | ++n; | |
3388 | ||
3389 | delta1 = n * delta; | |
3390 | } | |
7ab12479 JB |
3391 | |
3392 | /* Add delta1 lines or columns to this window, and to the parent, | |
3393 | keeping things consistent while not affecting siblings. */ | |
3578db3c KR |
3394 | XSETINT (CURSIZE (parent), opht + delta1); |
3395 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
7ab12479 JB |
3396 | |
3397 | /* Squeeze out delta1 lines or columns from our parent, | |
3398 | shriking this window and siblings proportionately. | |
3399 | This brings parent back to correct size. | |
3400 | Delta1 was calculated so this makes this window the desired size, | |
3401 | taking it all out of the siblings. */ | |
3402 | (*setsizefun) (parent, opht, 0); | |
3403 | } | |
3404 | ||
d834a2e9 | 3405 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 3406 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
3407 | |
3408 | /* Adjust glyph matrices. */ | |
3409 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 3410 | } |
c1636aa6 | 3411 | |
7ab12479 JB |
3412 | #undef CURBEG |
3413 | #undef CURSIZE | |
3414 | ||
5500c422 | 3415 | |
f984d4fc GM |
3416 | \f |
3417 | /*********************************************************************** | |
3418 | Resizing Mini-Windows | |
3419 | ***********************************************************************/ | |
3420 | ||
3421 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 3422 | |
43b4a21f GM |
3423 | enum save_restore_action |
3424 | { | |
3425 | CHECK_ORIG_SIZES, | |
3426 | SAVE_ORIG_SIZES, | |
3427 | RESTORE_ORIG_SIZES | |
3428 | }; | |
3429 | ||
3430 | static int save_restore_orig_size P_ ((struct window *, | |
3431 | enum save_restore_action)); | |
f984d4fc GM |
3432 | |
3433 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
3434 | from lowest windows first. */ | |
3435 | ||
3436 | static void | |
3437 | shrink_window_lowest_first (w, height) | |
3438 | struct window *w; | |
3439 | int height; | |
3440 | { | |
3441 | struct window *c; | |
3442 | Lisp_Object child; | |
3443 | int old_height; | |
3444 | ||
3445 | xassert (!MINI_WINDOW_P (w)); | |
3446 | ||
3447 | /* Set redisplay hints. */ | |
3448 | XSETFASTINT (w->last_modified, 0); | |
3449 | XSETFASTINT (w->last_overlay_modified, 0); | |
3450 | windows_or_buffers_changed++; | |
3451 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
3452 | ||
3453 | old_height = XFASTINT (w->height); | |
3454 | XSETFASTINT (w->height, height); | |
3455 | ||
3456 | if (!NILP (w->hchild)) | |
3457 | { | |
3458 | for (child = w->hchild; !NILP (child); child = c->next) | |
3459 | { | |
3460 | c = XWINDOW (child); | |
3461 | c->top = w->top; | |
3462 | shrink_window_lowest_first (c, height); | |
3463 | } | |
3464 | } | |
3465 | else if (!NILP (w->vchild)) | |
3466 | { | |
3467 | Lisp_Object last_child; | |
3468 | int delta = old_height - height; | |
3469 | int last_top; | |
3470 | ||
3471 | /* Find the last child. We are taking space from lowest windows | |
3472 | first, so we iterate over children from the last child | |
3473 | backwards. */ | |
3474 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
3475 | last_child = child; | |
3476 | ||
3477 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
3478 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
3479 | { | |
3480 | int this_one; | |
3481 | ||
3482 | c = XWINDOW (child); | |
3483 | this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT; | |
3484 | ||
3485 | if (this_one > delta) | |
3486 | this_one = delta; | |
3487 | ||
3488 | shrink_window_lowest_first (c, XFASTINT (c->height) - this_one); | |
3489 | delta -= this_one; | |
3490 | } | |
3491 | ||
3492 | /* Compute new positions. */ | |
3578db3c | 3493 | last_top = XINT (w->top); |
f984d4fc GM |
3494 | for (child = w->vchild; !NILP (child); child = c->next) |
3495 | { | |
3496 | c = XWINDOW (child); | |
3497 | c->top = make_number (last_top); | |
3498 | shrink_window_lowest_first (c, XFASTINT (c->height)); | |
3499 | last_top += XFASTINT (c->height); | |
3500 | } | |
3501 | } | |
3502 | } | |
3503 | ||
3504 | ||
43b4a21f GM |
3505 | /* Save, restore, or check positions and sizes in the window tree |
3506 | rooted at W. ACTION says what to do. | |
f984d4fc | 3507 | |
43b4a21f GM |
3508 | If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height |
3509 | members are valid for all windows in the window tree. Value is | |
3510 | non-zero if they are valid. | |
3511 | ||
3512 | If ACTION is SAVE_ORIG_SIZES, save members top and height in | |
3513 | orig_top and orig_height for all windows in the tree. | |
3514 | ||
3515 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from | |
3516 | values stored in orig_top and orig_height for all windows. */ | |
3517 | ||
3518 | static int | |
3519 | save_restore_orig_size (w, action) | |
f984d4fc | 3520 | struct window *w; |
43b4a21f | 3521 | enum save_restore_action action; |
f984d4fc | 3522 | { |
43b4a21f GM |
3523 | int success_p = 1; |
3524 | ||
f984d4fc GM |
3525 | while (w) |
3526 | { | |
3527 | if (!NILP (w->hchild)) | |
43b4a21f GM |
3528 | { |
3529 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
3530 | success_p = 0; | |
3531 | } | |
f984d4fc | 3532 | else if (!NILP (w->vchild)) |
43b4a21f GM |
3533 | { |
3534 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
3535 | success_p = 0; | |
3536 | } | |
f984d4fc | 3537 | |
43b4a21f | 3538 | switch (action) |
f984d4fc | 3539 | { |
43b4a21f GM |
3540 | case CHECK_ORIG_SIZES: |
3541 | if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height)) | |
3542 | return 0; | |
3543 | break; | |
3544 | ||
3545 | case SAVE_ORIG_SIZES: | |
f984d4fc GM |
3546 | w->orig_top = w->top; |
3547 | w->orig_height = w->height; | |
43b4a21f GM |
3548 | XSETFASTINT (w->last_modified, 0); |
3549 | XSETFASTINT (w->last_overlay_modified, 0); | |
3550 | break; | |
3551 | ||
3552 | case RESTORE_ORIG_SIZES: | |
f984d4fc GM |
3553 | xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height)); |
3554 | w->top = w->orig_top; | |
3555 | w->height = w->orig_height; | |
3556 | w->orig_height = w->orig_top = Qnil; | |
43b4a21f GM |
3557 | XSETFASTINT (w->last_modified, 0); |
3558 | XSETFASTINT (w->last_overlay_modified, 0); | |
3559 | break; | |
3560 | ||
3561 | default: | |
3562 | abort (); | |
f984d4fc | 3563 | } |
43b4a21f | 3564 | |
f984d4fc GM |
3565 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
3566 | } | |
43b4a21f GM |
3567 | |
3568 | return success_p; | |
f984d4fc GM |
3569 | } |
3570 | ||
3571 | ||
3572 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
3573 | without deleting other windows. */ | |
3574 | ||
3575 | void | |
3576 | grow_mini_window (w, delta) | |
3577 | struct window *w; | |
3578 | int delta; | |
3579 | { | |
3580 | struct frame *f = XFRAME (w->frame); | |
3581 | struct window *root; | |
3582 | ||
3583 | xassert (MINI_WINDOW_P (w)); | |
3584 | xassert (delta >= 0); | |
3585 | ||
3586 | /* Check values of window_min_width and window_min_height for | |
3587 | validity. */ | |
3588 | check_min_window_sizes (); | |
3589 | ||
3590 | /* Compute how much we can enlarge the mini-window without deleting | |
3591 | other windows. */ | |
3592 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3593 | if (delta) | |
3594 | { | |
3595 | int min_height = window_min_size (root, 0, 0, 0); | |
3596 | if (XFASTINT (root->height) - delta < min_height) | |
3597 | delta = XFASTINT (root->height) - min_height; | |
3598 | } | |
3599 | ||
3600 | if (delta) | |
3601 | { | |
3602 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
3603 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
3604 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
3605 | |
3606 | /* Shrink other windows. */ | |
3607 | shrink_window_lowest_first (root, XFASTINT (root->height) - delta); | |
3608 | ||
3609 | /* Grow the mini-window. */ | |
3578db3c | 3610 | w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height)); |
f984d4fc GM |
3611 | w->height = make_number (XFASTINT (w->height) + delta); |
3612 | XSETFASTINT (w->last_modified, 0); | |
3613 | XSETFASTINT (w->last_overlay_modified, 0); | |
3614 | ||
3615 | adjust_glyphs (f); | |
3616 | } | |
3617 | } | |
3618 | ||
3619 | ||
86c8e823 GM |
3620 | /* Shrink mini-window W. If there is recorded info about window sizes |
3621 | before a call to grow_mini_window, restore recorded window sizes. | |
3622 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
3623 | line. */ | |
f984d4fc GM |
3624 | |
3625 | void | |
3626 | shrink_mini_window (w) | |
3627 | struct window *w; | |
3628 | { | |
3629 | struct frame *f = XFRAME (w->frame); | |
3630 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3631 | ||
43b4a21f | 3632 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 3633 | { |
43b4a21f | 3634 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
3635 | adjust_glyphs (f); |
3636 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3637 | windows_or_buffers_changed = 1; | |
3638 | } | |
86c8e823 GM |
3639 | else if (XFASTINT (w->height) > 1) |
3640 | { | |
3641 | Lisp_Object window; | |
3642 | XSETWINDOW (window, w); | |
3643 | enlarge_window (window, 1 - XFASTINT (w->height), 0); | |
3644 | } | |
f984d4fc GM |
3645 | } |
3646 | ||
3647 | ||
3648 | \f | |
5500c422 GM |
3649 | /* Mark window cursors off for all windows in the window tree rooted |
3650 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
3651 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
3652 | the frame are cleared. */ | |
3653 | ||
3654 | void | |
3655 | mark_window_cursors_off (w) | |
3656 | struct window *w; | |
3657 | { | |
3658 | while (w) | |
3659 | { | |
3660 | if (!NILP (w->hchild)) | |
3661 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
3662 | else if (!NILP (w->vchild)) | |
3663 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
3664 | else | |
3665 | w->phys_cursor_on_p = 0; | |
3666 | ||
3667 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
3668 | } | |
3669 | } | |
3670 | ||
3671 | ||
7ab12479 JB |
3672 | /* Return number of lines of text (not counting mode line) in W. */ |
3673 | ||
3674 | int | |
3675 | window_internal_height (w) | |
3676 | struct window *w; | |
3677 | { | |
3678 | int ht = XFASTINT (w->height); | |
3679 | ||
3680 | if (MINI_WINDOW_P (w)) | |
3681 | return ht; | |
3682 | ||
265a9e55 JB |
3683 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
3684 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 3685 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
3686 | return ht - 1; |
3687 | ||
3688 | return ht; | |
3689 | } | |
3690 | ||
535e0b8e JB |
3691 | |
3692 | /* Return the number of columns in W. | |
a3c87d4e | 3693 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 3694 | separating W from the sibling to its right. */ |
5500c422 | 3695 | |
535e0b8e JB |
3696 | int |
3697 | window_internal_width (w) | |
3698 | struct window *w; | |
3699 | { | |
5500c422 | 3700 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
535e0b8e JB |
3701 | int width = XINT (w->width); |
3702 | ||
a3c87d4e | 3703 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) |
5500c422 GM |
3704 | /* Scroll bars occupy a few columns. */ |
3705 | width -= FRAME_SCROLL_BAR_COLS (f); | |
3706 | else if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
3707 | /* The column of `|' characters separating side-by-side windows | |
3708 | occupies one column only. */ | |
3709 | width -= 1; | |
3710 | ||
3711 | /* On window-systems, areas to the left and right of the window | |
3712 | are used to display bitmaps there. */ | |
3713 | if (FRAME_WINDOW_P (f)) | |
b46dfc64 | 3714 | width -= FRAME_FLAGS_AREA_COLS (f); |
111e5992 RS |
3715 | |
3716 | return width; | |
535e0b8e JB |
3717 | } |
3718 | ||
5500c422 GM |
3719 | \f |
3720 | /************************************************************************ | |
3721 | Window Scrolling | |
3722 | ***********************************************************************/ | |
535e0b8e | 3723 | |
5500c422 GM |
3724 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
3725 | one screen-full, which is defined as the height of the window minus | |
3726 | next_screen_context_lines. If WHOLE is zero, scroll up N lines | |
3727 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
3728 | means don't signal an error if we try to move over BEGV or ZV, | |
3729 | respectively. */ | |
7ab12479 | 3730 | |
101d1605 RS |
3731 | static void |
3732 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
3733 | Lisp_Object window; |
3734 | int n; | |
101d1605 | 3735 | int whole; |
f8026fd8 | 3736 | int noerror; |
5500c422 GM |
3737 | { |
3738 | /* If we must, use the pixel-based version which is much slower than | |
3739 | the line-based one but can handle varying line heights. */ | |
3740 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
3741 | window_scroll_pixel_based (window, n, whole, noerror); | |
3742 | else | |
3743 | window_scroll_line_based (window, n, whole, noerror); | |
3744 | } | |
3745 | ||
3746 | ||
3747 | /* Implementation of window_scroll that works based on pixel line | |
3748 | heights. See the comment of window_scroll for parameter | |
3749 | descriptions. */ | |
3750 | ||
3751 | static void | |
3752 | window_scroll_pixel_based (window, n, whole, noerror) | |
3753 | Lisp_Object window; | |
3754 | int n; | |
3755 | int whole; | |
3756 | int noerror; | |
3757 | { | |
3758 | struct it it; | |
3759 | struct window *w = XWINDOW (window); | |
3760 | struct text_pos start; | |
3761 | Lisp_Object tem; | |
3762 | int this_scroll_margin; | |
3763 | int preserve_y; | |
3764 | ||
3765 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
3766 | ||
3767 | /* If PT is not visible in WINDOW, move back one half of | |
3768 | the screen. */ | |
3769 | XSETFASTINT (tem, PT); | |
3770 | tem = Fpos_visible_in_window_p (tem, window); | |
3771 | if (NILP (tem)) | |
3772 | { | |
3773 | /* Move backward half the height of the window. Performance note: | |
3774 | vmotion used here is about 10% faster, but would give wrong | |
3775 | results for variable height lines. */ | |
3776 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3777 | it.current_y = it.last_visible_y; | |
3778 | move_it_vertically (&it, -it.last_visible_y / 2); | |
3779 | ||
3780 | /* The function move_iterator_vertically may move over more than | |
3781 | the specified y-distance. If it->w is small, e.g. a | |
3782 | mini-buffer window, we may end up in front of the window's | |
3783 | display area. This is the case when Start displaying at the | |
3784 | start of the line containing PT in this case. */ | |
3785 | if (it.current_y <= 0) | |
3786 | { | |
3787 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
3788 | move_it_vertically (&it, 0); | |
3789 | it.current_y = 0; | |
3790 | } | |
3791 | ||
3792 | start = it.current.pos; | |
3793 | } | |
3794 | ||
3795 | /* If scroll_preserve_screen_position is non-zero, we try to set | |
3796 | point in the same window line as it is now, so get that line. */ | |
3797 | if (!NILP (Vscroll_preserve_screen_position)) | |
3798 | { | |
3799 | start_display (&it, w, start); | |
3800 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3801 | preserve_y = it.current_y; | |
3802 | } | |
3803 | else | |
3804 | preserve_y = -1; | |
3805 | ||
3806 | /* Move iterator it from start the specified distance forward or | |
3807 | backward. The result is the new window start. */ | |
3808 | start_display (&it, w, start); | |
3809 | if (whole) | |
3810 | { | |
3811 | int screen_full = (it.last_visible_y | |
3812 | - next_screen_context_lines * CANON_Y_UNIT (it.f)); | |
3813 | int direction = n < 0 ? -1 : 1; | |
3814 | move_it_vertically (&it, direction * screen_full); | |
3815 | } | |
3816 | else | |
3817 | move_it_by_lines (&it, n, 1); | |
3818 | ||
3819 | /* End if we end up at ZV or BEGV. */ | |
3820 | if ((n > 0 && IT_CHARPOS (it) == ZV) | |
3821 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) | |
3822 | { | |
3823 | if (noerror) | |
3824 | return; | |
3825 | else if (IT_CHARPOS (it) == ZV) | |
3826 | Fsignal (Qend_of_buffer, Qnil); | |
3827 | else | |
3828 | Fsignal (Qbeginning_of_buffer, Qnil); | |
3829 | } | |
3830 | ||
3831 | /* Set the window start, and set up the window for redisplay. */ | |
3832 | set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), w->buffer); | |
3833 | w->start_at_line_beg = Fbolp (); | |
3834 | w->update_mode_line = Qt; | |
3835 | XSETFASTINT (w->last_modified, 0); | |
3836 | XSETFASTINT (w->last_overlay_modified, 0); | |
3837 | /* Set force_start so that redisplay_window will run the | |
3838 | window-scroll-functions. */ | |
3839 | w->force_start = Qt; | |
3840 | ||
3841 | it.current_y = it.vpos = 0; | |
3842 | ||
3843 | /* Preserve the screen position if we must. */ | |
3844 | if (preserve_y >= 0) | |
3845 | { | |
3846 | move_it_to (&it, -1, -1, preserve_y, -1, MOVE_TO_Y); | |
3847 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3848 | } | |
3849 | else | |
3850 | { | |
3851 | /* Move PT out of scroll margins. */ | |
3852 | this_scroll_margin = max (0, scroll_margin); | |
3853 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->height) / 4); | |
3854 | this_scroll_margin *= CANON_Y_UNIT (it.f); | |
3855 | ||
3856 | if (n > 0) | |
3857 | { | |
3858 | /* We moved the window start towards ZV, so PT may be now | |
3859 | in the scroll margin at the top. */ | |
3860 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
3861 | while (it.current_y < this_scroll_margin) | |
3862 | move_it_by_lines (&it, 1, 1); | |
3863 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3864 | } | |
3865 | else if (n < 0) | |
3866 | { | |
3867 | /* We moved the window start towards BEGV, so PT may be now | |
3868 | in the scroll margin at the bottom. */ | |
3869 | move_it_to (&it, PT, -1, | |
3870 | it.last_visible_y - this_scroll_margin - 1, -1, | |
3871 | MOVE_TO_POS | MOVE_TO_Y); | |
3872 | ||
3873 | /* Don't put point on a partially visible line at the end. */ | |
3874 | if (it.current_y + it.max_ascent + it.max_descent | |
3875 | > it.last_visible_y) | |
3876 | move_it_by_lines (&it, -1, 0); | |
3877 | ||
3878 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
3879 | } | |
3880 | } | |
3881 | } | |
3882 | ||
3883 | ||
3884 | /* Implementation of window_scroll that works based on screen lines. | |
3885 | See the comment of window_scroll for parameter descriptions. */ | |
3886 | ||
3887 | static void | |
3888 | window_scroll_line_based (window, n, whole, noerror) | |
3889 | Lisp_Object window; | |
3890 | int n; | |
3891 | int whole; | |
3892 | int noerror; | |
7ab12479 JB |
3893 | { |
3894 | register struct window *w = XWINDOW (window); | |
5500c422 | 3895 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 3896 | register int pos, pos_byte; |
7ab12479 JB |
3897 | register int ht = window_internal_height (w); |
3898 | register Lisp_Object tem; | |
3899 | int lose; | |
5500c422 | 3900 | Lisp_Object bolp; |
345d45b2 | 3901 | int startpos; |
101d1605 RS |
3902 | struct position posit; |
3903 | int original_vpos; | |
3904 | ||
3905 | startpos = marker_position (w->start); | |
3906 | ||
3907 | posit = *compute_motion (startpos, 0, 0, 0, | |
3908 | PT, ht, 0, | |
3909 | window_internal_width (w), XINT (w->hscroll), | |
3910 | 0, w); | |
3911 | original_vpos = posit.vpos; | |
0a1f771a | 3912 | |
d834a2e9 | 3913 | XSETFASTINT (tem, PT); |
7ab12479 JB |
3914 | tem = Fpos_visible_in_window_p (tem, window); |
3915 | ||
265a9e55 | 3916 | if (NILP (tem)) |
7ab12479 | 3917 | { |
cd2be1dd | 3918 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 3919 | startpos = PT; |
7ab12479 JB |
3920 | } |
3921 | ||
345d45b2 | 3922 | SET_PT (startpos); |
5ce7b543 | 3923 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 3924 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 3925 | pos = PT; |
b73ea88e | 3926 | pos_byte = PT_BYTE; |
7ab12479 | 3927 | bolp = Fbolp (); |
b73ea88e | 3928 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
3929 | |
3930 | if (lose) | |
f8026fd8 JB |
3931 | { |
3932 | if (noerror) | |
3933 | return; | |
3934 | else | |
3935 | Fsignal (Qbeginning_of_buffer, Qnil); | |
3936 | } | |
7ab12479 JB |
3937 | |
3938 | if (pos < ZV) | |
7ab12479 | 3939 | { |
0c7da84e RS |
3940 | int this_scroll_margin = scroll_margin; |
3941 | ||
3942 | /* Don't use a scroll margin that is negative or too large. */ | |
3943 | if (this_scroll_margin < 0) | |
3944 | this_scroll_margin = 0; | |
3945 | ||
3946 | if (XINT (w->height) < 4 * scroll_margin) | |
3947 | this_scroll_margin = XINT (w->height) / 4; | |
3948 | ||
b73ea88e | 3949 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
3950 | w->start_at_line_beg = bolp; |
3951 | w->update_mode_line = Qt; | |
d834a2e9 | 3952 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3953 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
3954 | /* Set force_start so that redisplay_window will run |
3955 | the window-scroll-functions. */ | |
3956 | w->force_start = Qt; | |
0c7da84e | 3957 | |
5500c422 | 3958 | if (whole && !NILP (Vscroll_preserve_screen_position)) |
0c7da84e | 3959 | { |
b73ea88e | 3960 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 3961 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 3962 | } |
101d1605 RS |
3963 | /* If we scrolled forward, put point enough lines down |
3964 | that it is outside the scroll margin. */ | |
3965 | else if (n > 0) | |
0c7da84e | 3966 | { |
101d1605 RS |
3967 | int top_margin; |
3968 | ||
3969 | if (this_scroll_margin > 0) | |
3970 | { | |
b73ea88e | 3971 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
3972 | Fvertical_motion (make_number (this_scroll_margin), window); |
3973 | top_margin = PT; | |
3974 | } | |
3975 | else | |
3976 | top_margin = pos; | |
3977 | ||
3978 | if (top_margin <= opoint) | |
b73ea88e | 3979 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 3980 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 3981 | { |
b73ea88e | 3982 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
3983 | Fvertical_motion (make_number (original_vpos), window); |
3984 | } | |
9317a85d | 3985 | else |
335406fc | 3986 | SET_PT (top_margin); |
0c7da84e | 3987 | } |
101d1605 | 3988 | else if (n < 0) |
7ab12479 | 3989 | { |
101d1605 RS |
3990 | int bottom_margin; |
3991 | ||
0c7da84e RS |
3992 | /* If we scrolled backward, put point near the end of the window |
3993 | but not within the scroll margin. */ | |
b73ea88e | 3994 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 3995 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
3996 | if (XFASTINT (tem) == ht - this_scroll_margin) |
3997 | bottom_margin = PT; | |
3998 | else | |
3999 | bottom_margin = PT + 1; | |
4000 | ||
4001 | if (bottom_margin > opoint) | |
b73ea88e | 4002 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 4003 | else |
101d1605 | 4004 | { |
5500c422 | 4005 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4006 | { |
b73ea88e | 4007 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
4008 | Fvertical_motion (make_number (original_vpos), window); |
4009 | } | |
4010 | else | |
4011 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4012 | } |
7ab12479 JB |
4013 | } |
4014 | } | |
4015 | else | |
f8026fd8 JB |
4016 | { |
4017 | if (noerror) | |
4018 | return; | |
4019 | else | |
4020 | Fsignal (Qend_of_buffer, Qnil); | |
4021 | } | |
7ab12479 | 4022 | } |
5500c422 GM |
4023 | |
4024 | ||
4025 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4026 | screen-full which is defined as the height of the window minus | |
4027 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4028 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4029 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4030 | |
4031 | static void | |
4032 | scroll_command (n, direction) | |
5500c422 | 4033 | Lisp_Object n; |
7ab12479 JB |
4034 | int direction; |
4035 | { | |
4036 | register int defalt; | |
4037 | int count = specpdl_ptr - specpdl; | |
4038 | ||
5500c422 GM |
4039 | xassert (abs (direction) == 1); |
4040 | ||
4041 | /* If selected window's buffer isn't current, make it current for | |
4042 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4043 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4044 | { |
4045 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4046 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4047 | |
4048 | /* Make redisplay consider other windows than just selected_window. */ | |
4049 | ++windows_or_buffers_changed; | |
95605e15 | 4050 | } |
7ab12479 JB |
4051 | |
4052 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
4053 | - next_screen_context_lines); | |
4054 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
4055 | ||
265a9e55 | 4056 | if (NILP (n)) |
101d1605 | 4057 | window_scroll (selected_window, defalt, 1, 0); |
7ab12479 | 4058 | else if (EQ (n, Qminus)) |
101d1605 | 4059 | window_scroll (selected_window, - defalt, 1, 0); |
7ab12479 JB |
4060 | else |
4061 | { | |
4062 | n = Fprefix_numeric_value (n); | |
101d1605 | 4063 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4064 | } |
95605e15 JB |
4065 | |
4066 | unbind_to (count, Qnil); | |
7ab12479 JB |
4067 | } |
4068 | ||
4069 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
4070 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
4071 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 4072 | Negative ARG means scroll downward.\n\ |
dd394ff9 KH |
4073 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4074 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4075 | (arg) |
4076 | Lisp_Object arg; | |
7ab12479 | 4077 | { |
413430c5 | 4078 | scroll_command (arg, 1); |
7ab12479 JB |
4079 | return Qnil; |
4080 | } | |
4081 | ||
4082 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a5fcbc4e | 4083 | "Scroll text of current window down ARG lines; or near full screen if no ARG.\n\ |
7ab12479 | 4084 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
279e0e0c | 4085 | Negative ARG means scroll upward.\n\ |
dd394ff9 KH |
4086 | If ARG is the atom `-', scroll upward by nearly full screen.\n\ |
4087 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
4088 | (arg) |
4089 | Lisp_Object arg; | |
7ab12479 | 4090 | { |
413430c5 | 4091 | scroll_command (arg, -1); |
7ab12479 JB |
4092 | return Qnil; |
4093 | } | |
ccd0664b RS |
4094 | \f |
4095 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
4096 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 4097 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
4098 | specifies the window.\n\ |
4099 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
4100 | showing that buffer is used.") | |
eb16ec06 | 4101 | () |
7ab12479 | 4102 | { |
ccd0664b | 4103 | Lisp_Object window; |
7ab12479 JB |
4104 | |
4105 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4106 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4107 | window = Vminibuf_scroll_window; |
4108 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4109 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4110 | { |
4111 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4112 | if (NILP (window)) |
53f76081 | 4113 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4114 | } |
4115 | else | |
dbc4e1c1 JB |
4116 | { |
4117 | /* Nothing specified; look for a neighboring window on the same | |
4118 | frame. */ | |
4119 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4120 | ||
4121 | if (EQ (window, selected_window)) | |
4122 | /* That didn't get us anywhere; look for a window on another | |
4123 | visible frame. */ | |
4124 | do | |
4125 | window = Fnext_window (window, Qnil, Qt); | |
4126 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4127 | && ! EQ (window, selected_window)); | |
4128 | } | |
4129 | ||
605be8af | 4130 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
4131 | |
4132 | if (EQ (window, selected_window)) | |
4133 | error ("There is no other window"); | |
4134 | ||
ccd0664b RS |
4135 | return window; |
4136 | } | |
4137 | ||
4138 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
4139 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
dd394ff9 | 4140 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
ccd0664b RS |
4141 | The next window is the one below the current one; or the one at the top\n\ |
4142 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
dd394ff9 KH |
4143 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
4144 | When calling from a program, supply as argument a number, nil, or `-'.\n\ | |
ccd0664b RS |
4145 | \n\ |
4146 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
4147 | specifies the window to scroll.\n\ | |
4148 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
4149 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
4150 | (arg) |
4151 | register Lisp_Object arg; | |
ccd0664b RS |
4152 | { |
4153 | register Lisp_Object window; | |
2f787aa3 | 4154 | register int defalt; |
ccd0664b RS |
4155 | register struct window *w; |
4156 | register int count = specpdl_ptr - specpdl; | |
4157 | ||
4158 | window = Fother_window_for_scrolling (); | |
4159 | ||
7ab12479 | 4160 | w = XWINDOW (window); |
2f787aa3 KH |
4161 | defalt = window_internal_height (w) - next_screen_context_lines; |
4162 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
4163 | |
4164 | /* Don't screw up if window_scroll gets an error. */ | |
4165 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4166 | ++windows_or_buffers_changed; |
7ab12479 JB |
4167 | |
4168 | Fset_buffer (w->buffer); | |
4169 | SET_PT (marker_position (w->pointm)); | |
4170 | ||
413430c5 | 4171 | if (NILP (arg)) |
101d1605 | 4172 | window_scroll (window, defalt, 1, 1); |
413430c5 | 4173 | else if (EQ (arg, Qminus)) |
101d1605 | 4174 | window_scroll (window, -defalt, 1, 1); |
7ab12479 JB |
4175 | else |
4176 | { | |
413430c5 EN |
4177 | if (CONSP (arg)) |
4178 | arg = Fcar (arg); | |
4179 | CHECK_NUMBER (arg, 0); | |
101d1605 | 4180 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4181 | } |
4182 | ||
b73ea88e | 4183 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4184 | unbind_to (count, Qnil); |
7ab12479 JB |
4185 | |
4186 | return Qnil; | |
4187 | } | |
4188 | \f | |
644b477c | 4189 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
4190 | "Scroll selected window display ARG columns left.\n\ |
4191 | Default for ARG is window width minus 2.") | |
4192 | (arg) | |
4193 | register Lisp_Object arg; | |
4194 | { | |
4195 | ||
265a9e55 | 4196 | if (NILP (arg)) |
d834a2e9 | 4197 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4198 | else |
4199 | arg = Fprefix_numeric_value (arg); | |
4200 | ||
4201 | return | |
4202 | Fset_window_hscroll (selected_window, | |
4203 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4204 | + XINT (arg))); | |
4205 | } | |
4206 | ||
644b477c | 4207 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
4208 | "Scroll selected window display ARG columns right.\n\ |
4209 | Default for ARG is window width minus 2.") | |
4210 | (arg) | |
4211 | register Lisp_Object arg; | |
4212 | { | |
265a9e55 | 4213 | if (NILP (arg)) |
d834a2e9 | 4214 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
4215 | else |
4216 | arg = Fprefix_numeric_value (arg); | |
4217 | ||
4218 | return | |
4219 | Fset_window_hscroll (selected_window, | |
4220 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
4221 | - XINT (arg))); | |
4222 | } | |
4223 | ||
4224 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 4225 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 4226 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 4227 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 4228 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 4229 | redraws with point in the center of the current window.") |
413430c5 EN |
4230 | (arg) |
4231 | register Lisp_Object arg; | |
7ab12479 JB |
4232 | { |
4233 | register struct window *w = XWINDOW (selected_window); | |
4234 | register int ht = window_internal_height (w); | |
113d9015 | 4235 | struct position pos; |
478292ed RS |
4236 | struct buffer *buf = XBUFFER (w->buffer); |
4237 | struct buffer *obuf = current_buffer; | |
7ab12479 | 4238 | |
413430c5 | 4239 | if (NILP (arg)) |
7ab12479 | 4240 | { |
44fa5b1e | 4241 | extern int frame_garbaged; |
f02d6d5c KH |
4242 | int i; |
4243 | ||
4244 | /* Invalidate pixel data calculated for all compositions. */ | |
4245 | for (i = 0; i < n_compositions; i++) | |
4246 | composition_table[i]->font = NULL; | |
7ab12479 | 4247 | |
527b6458 | 4248 | Fredraw_frame (w->frame); |
44fa5b1e | 4249 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 4250 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 4251 | } |
413430c5 | 4252 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 4253 | { |
413430c5 | 4254 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
4255 | } |
4256 | else | |
4257 | { | |
413430c5 EN |
4258 | arg = Fprefix_numeric_value (arg); |
4259 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
4260 | } |
4261 | ||
413430c5 EN |
4262 | if (XINT (arg) < 0) |
4263 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 4264 | |
478292ed | 4265 | set_buffer_internal (buf); |
6ec8bbd2 | 4266 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 4267 | |
b73ea88e RS |
4268 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
4269 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
4270 | || FETCH_BYTE (pos.bytepos - 1) == '\n') | |
113d9015 | 4271 | ? Qt : Qnil); |
7ab12479 | 4272 | w->force_start = Qt; |
478292ed | 4273 | set_buffer_internal (obuf); |
7ab12479 JB |
4274 | |
4275 | return Qnil; | |
4276 | } | |
b7617575 GM |
4277 | |
4278 | ||
4279 | /* Value is the number of lines actually displayed in window W, | |
4280 | as opposed to its height. */ | |
4281 | ||
4282 | static int | |
4283 | displayed_window_lines (w) | |
4284 | struct window *w; | |
4285 | { | |
4286 | struct it it; | |
4287 | struct text_pos start; | |
3091c2a6 | 4288 | int height = window_box_height (w); |
b7617575 GM |
4289 | |
4290 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4291 | start_display (&it, w, start); | |
3091c2a6 GM |
4292 | move_it_vertically (&it, height); |
4293 | ||
4294 | /* Add in empty lines at the bottom of the window. */ | |
4295 | if (it.current_y < height) | |
4296 | { | |
4297 | struct frame *f = XFRAME (w->frame); | |
4298 | int rest = height - it.current_y; | |
4299 | int lines = (rest + CANON_Y_UNIT (f) - 1) / CANON_Y_UNIT (f); | |
4300 | it.vpos += lines; | |
4301 | } | |
4302 | ||
b7617575 GM |
4303 | return it.vpos; |
4304 | } | |
4305 | ||
4306 | ||
7ab12479 JB |
4307 | \f |
4308 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
4309 | 1, 1, "P", | |
4310 | "Position point relative to window.\n\ | |
19e3bf0a | 4311 | With no argument, position point at center of window.\n\ |
d81724c7 RS |
4312 | An argument specifies vertical position within the window;\n\ |
4313 | zero means top of window, negative means relative to bottom of window.") | |
7ab12479 | 4314 | (arg) |
b7617575 | 4315 | Lisp_Object arg; |
7ab12479 | 4316 | { |
b7617575 GM |
4317 | struct window *w = XWINDOW (selected_window); |
4318 | int lines, start; | |
540b6aa0 | 4319 | Lisp_Object window; |
7ab12479 | 4320 | |
b7617575 | 4321 | window = selected_window; |
7ab12479 JB |
4322 | start = marker_position (w->start); |
4323 | if (start < BEGV || start > ZV) | |
4324 | { | |
b7617575 | 4325 | int height = window_internal_height (w); |
cd2be1dd | 4326 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 4327 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
4328 | w->start_at_line_beg = Fbolp (); |
4329 | w->force_start = Qt; | |
4330 | } | |
4331 | else | |
b73ea88e | 4332 | Fgoto_char (w->start); |
7ab12479 | 4333 | |
b7617575 GM |
4334 | lines = displayed_window_lines (w); |
4335 | if (NILP (arg)) | |
4336 | XSETFASTINT (arg, lines / 2); | |
4337 | else | |
4338 | { | |
4339 | arg = Fprefix_numeric_value (arg); | |
4340 | if (XINT (arg) < 0) | |
4341 | XSETINT (arg, XINT (arg) + lines); | |
4342 | } | |
4343 | ||
540b6aa0 | 4344 | return Fvertical_motion (arg, window); |
7ab12479 | 4345 | } |
5500c422 GM |
4346 | |
4347 | ||
7ab12479 | 4348 | \f |
5500c422 GM |
4349 | /*********************************************************************** |
4350 | Window Configuration | |
4351 | ***********************************************************************/ | |
4352 | ||
7ab12479 JB |
4353 | struct save_window_data |
4354 | { | |
f5ccc0cc | 4355 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 4356 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 4357 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
9ea173e8 | 4358 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 4359 | Lisp_Object selected_frame; |
7ab12479 JB |
4360 | Lisp_Object current_window; |
4361 | Lisp_Object current_buffer; | |
4362 | Lisp_Object minibuf_scroll_window; | |
4363 | Lisp_Object root_window; | |
bdc727bf | 4364 | Lisp_Object focus_frame; |
756b6edc RS |
4365 | /* Record the values of window-min-width and window-min-height |
4366 | so that window sizes remain consistent with them. */ | |
4367 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
4368 | /* A vector, each of whose elements is a struct saved_window |
4369 | for one window. */ | |
7ab12479 JB |
4370 | Lisp_Object saved_windows; |
4371 | }; | |
ff06df24 | 4372 | |
cbff28e8 | 4373 | /* This is saved as a Lisp_Vector */ |
7ab12479 JB |
4374 | struct saved_window |
4375 | { | |
4376 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 4377 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
4378 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
4379 | ||
4380 | Lisp_Object window; | |
4381 | Lisp_Object buffer, start, pointm, mark; | |
4382 | Lisp_Object left, top, width, height, hscroll; | |
4383 | Lisp_Object parent, prev; | |
4384 | Lisp_Object start_at_line_beg; | |
4385 | Lisp_Object display_table; | |
4386 | }; | |
4387 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
4388 | ||
4389 | #define SAVED_WINDOW_N(swv,n) \ | |
4390 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
4391 | ||
4392 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
cbff28e8 | 4393 | "Return t if OBJECT is a window-configuration object.") |
413430c5 EN |
4394 | (object) |
4395 | Lisp_Object object; | |
7ab12479 | 4396 | { |
413430c5 | 4397 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
4398 | return Qt; |
4399 | return Qnil; | |
4400 | } | |
4401 | ||
3f8ab7bd RS |
4402 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
4403 | "Return the frame that CONFIG, a window-configuration object, is about.") | |
4404 | (config) | |
4405 | Lisp_Object config; | |
4406 | { | |
4407 | register struct save_window_data *data; | |
4408 | struct Lisp_Vector *saved_windows; | |
4409 | ||
4410 | if (! WINDOW_CONFIGURATIONP (config)) | |
4411 | wrong_type_argument (Qwindow_configuration_p, config); | |
4412 | ||
4413 | data = (struct save_window_data *) XVECTOR (config); | |
4414 | saved_windows = XVECTOR (data->saved_windows); | |
4415 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
4416 | } | |
4417 | ||
d5b2799e RS |
4418 | DEFUN ("set-window-configuration", Fset_window_configuration, |
4419 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
4420 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
4421 | CONFIGURATION must be a value previously returned\n\ | |
3f8ab7bd RS |
4422 | by `current-window-configuration' (which see).\n\ |
4423 | If CONFIGURATION was made from a frame that is now deleted,\n\ | |
4424 | only frame-independent values can be restored. In this case,\n\ | |
4425 | the return value is nil. Otherwise the value is t.") | |
4426 | (configuration) | |
2f83aebe | 4427 | Lisp_Object configuration; |
7ab12479 | 4428 | { |
7ab12479 JB |
4429 | register struct save_window_data *data; |
4430 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 4431 | Lisp_Object new_current_buffer; |
fd482be5 | 4432 | Lisp_Object frame; |
44fa5b1e | 4433 | FRAME_PTR f; |
d2b35234 | 4434 | int old_point = -1; |
7ab12479 | 4435 | |
017b2bad | 4436 | while (!WINDOW_CONFIGURATIONP (configuration)) |
3f8ab7bd | 4437 | wrong_type_argument (Qwindow_configuration_p, configuration); |
7ab12479 | 4438 | |
2f83aebe | 4439 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
4440 | saved_windows = XVECTOR (data->saved_windows); |
4441 | ||
7ab12479 | 4442 | new_current_buffer = data->current_buffer; |
265a9e55 | 4443 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 4444 | new_current_buffer = Qnil; |
d2b35234 RS |
4445 | else |
4446 | { | |
4447 | if (XBUFFER (new_current_buffer) == current_buffer) | |
4448 | old_point = PT; | |
cbff28e8 | 4449 | |
d2b35234 | 4450 | } |
7ab12479 | 4451 | |
fd482be5 JB |
4452 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
4453 | f = XFRAME (frame); | |
9ace597f | 4454 | |
fd482be5 JB |
4455 | /* If f is a dead frame, don't bother rebuilding its window tree. |
4456 | However, there is other stuff we should still try to do below. */ | |
4457 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 4458 | { |
fd482be5 JB |
4459 | register struct window *w; |
4460 | register struct saved_window *p; | |
5500c422 GM |
4461 | struct window *root_window; |
4462 | struct window **leaf_windows; | |
4463 | int n_leaf_windows; | |
4464 | int k, i; | |
fd482be5 JB |
4465 | |
4466 | /* If the frame has been resized since this window configuration was | |
4467 | made, we change the frame to the size specified in the | |
4468 | configuration, restore the configuration, and then resize it | |
4469 | back. We keep track of the prevailing height in these variables. */ | |
4470 | int previous_frame_height = FRAME_HEIGHT (f); | |
4471 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 4472 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 4473 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 4474 | |
d2b35234 RS |
4475 | /* The mouse highlighting code could get screwed up |
4476 | if it runs during this. */ | |
4477 | BLOCK_INPUT; | |
4478 | ||
fd482be5 JB |
4479 | if (XFASTINT (data->frame_height) != previous_frame_height |
4480 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a | 4481 | change_frame_size (f, XFASTINT (data->frame_height), |
2b653806 | 4482 | XFASTINT (data->frame_width), 0, 0, 0); |
e3678b64 | 4483 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
4484 | if (XFASTINT (data->frame_menu_bar_lines) |
4485 | != previous_frame_menu_bar_lines) | |
f8ad443a | 4486 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 4487 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4488 | if (XFASTINT (data->frame_tool_bar_lines) |
4489 | != previous_frame_tool_bar_lines) | |
4490 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 4491 | #endif |
217f2871 | 4492 | #endif |
fd482be5 | 4493 | |
719eaeb1 GM |
4494 | /* "Swap out" point from the selected window |
4495 | into its buffer. We do this now, before | |
4496 | restoring the window contents, and prevent it from | |
4497 | being done later on when we select a new window. */ | |
596ae0cf RS |
4498 | if (! NILP (XWINDOW (selected_window)->buffer)) |
4499 | { | |
4500 | w = XWINDOW (selected_window); | |
4501 | set_marker_both (w->pointm, | |
4502 | w->buffer, | |
4503 | BUF_PT (XBUFFER (w->buffer)), | |
4504 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
4505 | } | |
4506 | ||
fd482be5 | 4507 | windows_or_buffers_changed++; |
29aeee73 | 4508 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 4509 | |
5500c422 GM |
4510 | /* Problem: Freeing all matrices and later allocating them again |
4511 | is a serious redisplay flickering problem. What we would | |
4512 | really like to do is to free only those matrices not reused | |
4513 | below. */ | |
4514 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4515 | leaf_windows | |
4516 | = (struct window **) alloca (count_windows (root_window) | |
4517 | * sizeof (struct window *)); | |
4518 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
4519 | ||
756b6edc RS |
4520 | /* Temporarily avoid any problems with windows that are smaller |
4521 | than they are supposed to be. */ | |
4522 | window_min_height = 1; | |
4523 | window_min_width = 1; | |
4524 | ||
fd482be5 JB |
4525 | /* Kludge Alert! |
4526 | Mark all windows now on frame as "deleted". | |
4527 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 4528 | |
fd482be5 JB |
4529 | Save their current buffers in their height fields, since we may |
4530 | need it later, if a buffer saved in the configuration is now | |
4531 | dead. */ | |
4532 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
4533 | ||
4534 | for (k = 0; k < saved_windows->size; k++) | |
4535 | { | |
4536 | p = SAVED_WINDOW_N (saved_windows, k); | |
4537 | w = XWINDOW (p->window); | |
4538 | w->next = Qnil; | |
7ab12479 | 4539 | |
fd482be5 JB |
4540 | if (!NILP (p->parent)) |
4541 | w->parent = SAVED_WINDOW_N (saved_windows, | |
4542 | XFASTINT (p->parent))->window; | |
4543 | else | |
4544 | w->parent = Qnil; | |
7ab12479 | 4545 | |
fd482be5 | 4546 | if (!NILP (p->prev)) |
7ab12479 | 4547 | { |
fd482be5 JB |
4548 | w->prev = SAVED_WINDOW_N (saved_windows, |
4549 | XFASTINT (p->prev))->window; | |
4550 | XWINDOW (w->prev)->next = p->window; | |
4551 | } | |
4552 | else | |
4553 | { | |
4554 | w->prev = Qnil; | |
4555 | if (!NILP (w->parent)) | |
4556 | { | |
4557 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
4558 | { | |
4559 | XWINDOW (w->parent)->vchild = p->window; | |
4560 | XWINDOW (w->parent)->hchild = Qnil; | |
4561 | } | |
4562 | else | |
4563 | { | |
4564 | XWINDOW (w->parent)->hchild = p->window; | |
4565 | XWINDOW (w->parent)->vchild = Qnil; | |
4566 | } | |
4567 | } | |
4568 | } | |
4569 | ||
4570 | /* If we squirreled away the buffer in the window's height, | |
4571 | restore it now. */ | |
017b2bad | 4572 | if (BUFFERP (w->height)) |
fd482be5 JB |
4573 | w->buffer = w->height; |
4574 | w->left = p->left; | |
4575 | w->top = p->top; | |
4576 | w->width = p->width; | |
4577 | w->height = p->height; | |
4578 | w->hscroll = p->hscroll; | |
4579 | w->display_table = p->display_table; | |
d834a2e9 | 4580 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4581 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
4582 | |
4583 | /* Reinstall the saved buffer and pointers into it. */ | |
4584 | if (NILP (p->buffer)) | |
4585 | w->buffer = p->buffer; | |
4586 | else | |
4587 | { | |
4588 | if (!NILP (XBUFFER (p->buffer)->name)) | |
4589 | /* If saved buffer is alive, install it. */ | |
4590 | { | |
4591 | w->buffer = p->buffer; | |
4592 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
4593 | set_marker_restricted (w->start, p->start, w->buffer); |
4594 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 4595 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 4596 | p->mark, w->buffer); |
fd482be5 JB |
4597 | |
4598 | /* As documented in Fcurrent_window_configuration, don't | |
4599 | save the location of point in the buffer which was current | |
4600 | when the window configuration was recorded. */ | |
6b54027b RS |
4601 | if (!EQ (p->buffer, new_current_buffer) |
4602 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
4603 | Fgoto_char (w->pointm); |
4604 | } | |
52a68e98 RS |
4605 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
4606 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 4607 | { |
fd482be5 JB |
4608 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
4609 | /* This will set the markers to beginning of visible | |
4610 | range. */ | |
4611 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
4612 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
4613 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
4614 | } |
4615 | else | |
fd482be5 | 4616 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 4617 | are real. */ |
7ab12479 | 4618 | { |
fd482be5 JB |
4619 | /* Set window markers at start of visible range. */ |
4620 | if (XMARKER (w->start)->buffer == 0) | |
4621 | set_marker_restricted (w->start, make_number (0), | |
4622 | w->buffer); | |
4623 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
4624 | set_marker_restricted_both (w->pointm, w->buffer, |
4625 | BUF_PT (XBUFFER (w->buffer)), | |
4626 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 4627 | w->start_at_line_beg = Qt; |
7ab12479 JB |
4628 | } |
4629 | } | |
4630 | } | |
9ace597f | 4631 | |
fd482be5 | 4632 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
4633 | /* Prevent "swapping out point" in the old selected window |
4634 | using the buffer that has been restored into it. | |
4635 | That swapping out has already been done, | |
4636 | near the beginning of this function. */ | |
4637 | selected_window = Qnil; | |
fd482be5 | 4638 | Fselect_window (data->current_window); |
396a830c RS |
4639 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
4640 | = selected_window; | |
7ab12479 | 4641 | |
db269683 | 4642 | if (NILP (data->focus_frame) |
017b2bad | 4643 | || (FRAMEP (data->focus_frame) |
db269683 JB |
4644 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
4645 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 4646 | |
fd482be5 JB |
4647 | #if 0 /* I don't understand why this is needed, and it causes problems |
4648 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 4649 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
4650 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
4651 | Qnil, 0); | |
fd482be5 JB |
4652 | #endif |
4653 | ||
4654 | /* Set the screen height to the value it had before this function. */ | |
4655 | if (previous_frame_height != FRAME_HEIGHT (f) | |
4656 | || previous_frame_width != FRAME_WIDTH (f)) | |
4657 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2b653806 | 4658 | 0, 0, 0); |
e3678b64 | 4659 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 4660 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
4661 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
4662 | make_number (0)); | |
4314246f | 4663 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
4664 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
4665 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
4666 | make_number (0)); | |
4314246f | 4667 | #endif |
217f2871 | 4668 | #endif |
d2b35234 | 4669 | |
5500c422 GM |
4670 | /* Now, free glyph matrices in windows that were not reused. */ |
4671 | for (i = 0; i < n_leaf_windows; ++i) | |
4672 | if (NILP (leaf_windows[i]->buffer)) | |
4673 | { | |
4674 | /* Assert it's not reused as a combination. */ | |
4675 | xassert (NILP (leaf_windows[i]->hchild) | |
4676 | && NILP (leaf_windows[i]->vchild)); | |
4677 | free_window_matrices (leaf_windows[i]); | |
4678 | SET_FRAME_GARBAGED (f); | |
4679 | } | |
4680 | ||
4681 | adjust_glyphs (f); | |
4682 | ||
d2b35234 | 4683 | UNBLOCK_INPUT; |
756b6edc | 4684 | |
478292ed RS |
4685 | /* Fselect_window will have made f the selected frame, so we |
4686 | reselect the proper frame here. Fhandle_switch_frame will change the | |
4687 | selected window too, but that doesn't make the call to | |
4688 | Fselect_window above totally superfluous; it still sets f's | |
4689 | selected window. */ | |
4690 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
4691 | do_switch_frame (data->selected_frame, Qnil, 0); | |
4692 | ||
4693 | if (! NILP (Vwindow_configuration_change_hook) | |
4694 | && ! NILP (Vrun_hooks)) | |
4695 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4696 | } | |
bdc727bf JB |
4697 | |
4698 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
4699 | { |
4700 | Fset_buffer (new_current_buffer); | |
4701 | ||
4702 | /* If the buffer that is current now is the same | |
4703 | that was current before setting the window configuration, | |
4704 | don't alter its PT. */ | |
4705 | if (old_point >= 0) | |
4706 | SET_PT (old_point); | |
4707 | } | |
bdc727bf | 4708 | |
478292ed RS |
4709 | /* Restore the minimum heights recorded in the configuration. */ |
4710 | window_min_height = XINT (data->min_height); | |
4711 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 4712 | |
478292ed | 4713 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 4714 | |
3f8ab7bd | 4715 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
4716 | } |
4717 | ||
44fa5b1e | 4718 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
4719 | by setting their buffers to nil. */ |
4720 | ||
fd482be5 | 4721 | void |
7ab12479 JB |
4722 | delete_all_subwindows (w) |
4723 | register struct window *w; | |
4724 | { | |
265a9e55 | 4725 | if (!NILP (w->next)) |
7ab12479 | 4726 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 4727 | if (!NILP (w->vchild)) |
7ab12479 | 4728 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 4729 | if (!NILP (w->hchild)) |
7ab12479 | 4730 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
4731 | |
4732 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
4733 | ||
86e48436 RS |
4734 | if (!NILP (w->buffer)) |
4735 | unshow_buffer (w); | |
4736 | ||
605be8af JB |
4737 | /* We set all three of these fields to nil, to make sure that we can |
4738 | distinguish this dead window from any live window. Live leaf | |
4739 | windows will have buffer set, and combination windows will have | |
4740 | vchild or hchild set. */ | |
4741 | w->buffer = Qnil; | |
4742 | w->vchild = Qnil; | |
4743 | w->hchild = Qnil; | |
acf70840 GM |
4744 | |
4745 | Vwindow_list = Qnil; | |
7ab12479 JB |
4746 | } |
4747 | \f | |
4748 | static int | |
4749 | count_windows (window) | |
4750 | register struct window *window; | |
4751 | { | |
4752 | register int count = 1; | |
265a9e55 | 4753 | if (!NILP (window->next)) |
7ab12479 | 4754 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 4755 | if (!NILP (window->vchild)) |
7ab12479 | 4756 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 4757 | if (!NILP (window->hchild)) |
7ab12479 JB |
4758 | count += count_windows (XWINDOW (window->hchild)); |
4759 | return count; | |
4760 | } | |
4761 | ||
5500c422 GM |
4762 | |
4763 | /* Fill vector FLAT with leaf windows under W, starting at index I. | |
4764 | Value is last index + 1. */ | |
4765 | ||
4766 | static int | |
4767 | get_leaf_windows (w, flat, i) | |
4768 | struct window *w; | |
4769 | struct window **flat; | |
4770 | int i; | |
4771 | { | |
4772 | while (w) | |
4773 | { | |
4774 | if (!NILP (w->hchild)) | |
4775 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
4776 | else if (!NILP (w->vchild)) | |
4777 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
4778 | else | |
4779 | flat[i++] = w; | |
4780 | ||
4781 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4782 | } | |
4783 | ||
4784 | return i; | |
4785 | } | |
4786 | ||
4787 | ||
4788 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
4789 | null if W's current matrix is invalid, so that no meaningfull glyph | |
4790 | can be returned. */ | |
4791 | ||
4792 | struct glyph * | |
4793 | get_phys_cursor_glyph (w) | |
4794 | struct window *w; | |
4795 | { | |
4796 | struct glyph_row *row; | |
4797 | struct glyph *glyph; | |
4798 | ||
4799 | if (w->phys_cursor.vpos >= 0 | |
4800 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
4801 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
4802 | row->enabled_p) | |
4803 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
4804 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
4805 | else | |
4806 | glyph = NULL; | |
4807 | ||
4808 | return glyph; | |
4809 | } | |
4810 | ||
4811 | ||
7ab12479 JB |
4812 | static int |
4813 | save_window_save (window, vector, i) | |
4814 | Lisp_Object window; | |
4815 | struct Lisp_Vector *vector; | |
4816 | int i; | |
4817 | { | |
4818 | register struct saved_window *p; | |
4819 | register struct window *w; | |
4820 | register Lisp_Object tem; | |
4821 | ||
265a9e55 | 4822 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
4823 | { |
4824 | p = SAVED_WINDOW_N (vector, i); | |
4825 | w = XWINDOW (window); | |
4826 | ||
d834a2e9 | 4827 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
4828 | p->window = window; |
4829 | p->buffer = w->buffer; | |
4830 | p->left = w->left; | |
4831 | p->top = w->top; | |
4832 | p->width = w->width; | |
4833 | p->height = w->height; | |
4834 | p->hscroll = w->hscroll; | |
4835 | p->display_table = w->display_table; | |
265a9e55 | 4836 | if (!NILP (w->buffer)) |
7ab12479 JB |
4837 | { |
4838 | /* Save w's value of point in the window configuration. | |
4839 | If w is the selected window, then get the value of point | |
4840 | from the buffer; pointm is garbage in the selected window. */ | |
4841 | if (EQ (window, selected_window)) | |
4842 | { | |
4843 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
4844 | set_marker_both (p->pointm, w->buffer, |
4845 | BUF_PT (XBUFFER (w->buffer)), | |
4846 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
4847 | } |
4848 | else | |
eeb82665 | 4849 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 4850 | |
eeb82665 | 4851 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
4852 | p->start_at_line_beg = w->start_at_line_beg; |
4853 | ||
4854 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 4855 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
4856 | } |
4857 | else | |
4858 | { | |
4859 | p->pointm = Qnil; | |
4860 | p->start = Qnil; | |
4861 | p->mark = Qnil; | |
4862 | p->start_at_line_beg = Qnil; | |
4863 | } | |
4864 | ||
265a9e55 | 4865 | if (NILP (w->parent)) |
7ab12479 JB |
4866 | p->parent = Qnil; |
4867 | else | |
4868 | p->parent = XWINDOW (w->parent)->temslot; | |
4869 | ||
265a9e55 | 4870 | if (NILP (w->prev)) |
7ab12479 JB |
4871 | p->prev = Qnil; |
4872 | else | |
4873 | p->prev = XWINDOW (w->prev)->temslot; | |
4874 | ||
265a9e55 | 4875 | if (!NILP (w->vchild)) |
7ab12479 | 4876 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 4877 | if (!NILP (w->hchild)) |
7ab12479 JB |
4878 | i = save_window_save (w->hchild, vector, i); |
4879 | } | |
4880 | ||
4881 | return i; | |
4882 | } | |
4883 | ||
a0d76c27 EN |
4884 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
4885 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
4886 | "Return an object representing the current window configuration of FRAME.\n\ |
4887 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
4888 | This describes the number of windows, their sizes and current buffers,\n\ |
4889 | and for each displayed buffer, where display starts, and the positions of\n\ | |
4890 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
4891 | its value is -not- saved.\n\ |
4892 | This also records the currently selected frame, and FRAME's focus\n\ | |
4893 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
4894 | (frame) |
4895 | Lisp_Object frame; | |
7ab12479 JB |
4896 | { |
4897 | register Lisp_Object tem; | |
4898 | register int n_windows; | |
4899 | register struct save_window_data *data; | |
da2792e0 | 4900 | register struct Lisp_Vector *vec; |
7ab12479 | 4901 | register int i; |
44fa5b1e | 4902 | FRAME_PTR f; |
43bad991 | 4903 | |
44fa5b1e | 4904 | if (NILP (frame)) |
1ae1a37d GM |
4905 | frame = selected_frame; |
4906 | CHECK_LIVE_FRAME (frame, 0); | |
4907 | f = XFRAME (frame); | |
7ab12479 | 4908 | |
44fa5b1e | 4909 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
4910 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
4911 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
4912 | vec->contents[i] = Qnil; | |
4913 | vec->size = VECSIZE (struct save_window_data); | |
4914 | data = (struct save_window_data *)vec; | |
4915 | ||
d834a2e9 KH |
4916 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
4917 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
4918 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
9ea173e8 | 4919 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 4920 | data->selected_frame = selected_frame; |
44fa5b1e | 4921 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 4922 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 4923 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 4924 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 4925 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
4926 | XSETINT (data->min_height, window_min_height); |
4927 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
4928 | tem = Fmake_vector (make_number (n_windows), Qnil); |
4929 | data->saved_windows = tem; | |
4930 | for (i = 0; i < n_windows; i++) | |
4931 | XVECTOR (tem)->contents[i] | |
4932 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 4933 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 4934 | XVECTOR (tem), 0); |
74112613 | 4935 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
4936 | return (tem); |
4937 | } | |
4938 | ||
4939 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
4940 | 0, UNEVALLED, 0, | |
4941 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
4942 | Restore which buffer appears in which window, where display starts,\n\ |
4943 | and the value of point and mark for each window.\n\ | |
8ed92cf0 | 4944 | Also restore the choice of selected window.\n\ |
eb16ec06 | 4945 | Also restore which buffer is current.\n\ |
7ab12479 JB |
4946 | Does not restore the value of point in current buffer.") |
4947 | (args) | |
4948 | Lisp_Object args; | |
4949 | { | |
4950 | register Lisp_Object val; | |
4951 | register int count = specpdl_ptr - specpdl; | |
4952 | ||
4953 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 4954 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
4955 | val = Fprogn (args); |
4956 | return unbind_to (count, val); | |
4957 | } | |
5500c422 GM |
4958 | |
4959 | \f | |
4960 | /*********************************************************************** | |
4961 | Marginal Areas | |
4962 | ***********************************************************************/ | |
4963 | ||
4964 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 4965 | 2, 3, 0, |
5500c422 | 4966 | "Set width of marginal areas of window WINDOW.\n\ |
a7bdfc08 | 4967 | If window is nil, set margins of the currently selected window.\n\ |
5500c422 GM |
4968 | First parameter LEFT-WIDTH specifies the number of character\n\ |
4969 | cells to reserve for the left marginal area. Second parameter\n\ | |
4970 | RIGHT-WIDTH does the same for the right marginal area.\n\ | |
4971 | A nil width parameter means no margin.") | |
cfa22082 | 4972 | (window, left, right) |
5500c422 GM |
4973 | Lisp_Object window, left, right; |
4974 | { | |
4975 | struct window *w = decode_window (window); | |
5500c422 GM |
4976 | |
4977 | if (!NILP (left)) | |
cfa22082 | 4978 | CHECK_NUMBER_OR_FLOAT (left, 1); |
5500c422 | 4979 | if (!NILP (right)) |
cfa22082 | 4980 | CHECK_NUMBER_OR_FLOAT (right, 2); |
5500c422 GM |
4981 | |
4982 | /* Check widths < 0 and translate a zero width to nil. | |
4983 | Margins that are too wide have to be checked elsewhere. */ | |
4984 | if ((INTEGERP (left) && XINT (left) < 0) | |
7539e11f | 4985 | || (FLOATP (left) && XFLOAT_DATA (left) <= 0)) |
5500c422 GM |
4986 | XSETFASTINT (left, 0); |
4987 | if (INTEGERP (left) && XFASTINT (left) == 0) | |
4988 | left = Qnil; | |
4989 | ||
4990 | if ((INTEGERP (right) && XINT (right) < 0) | |
7539e11f | 4991 | || (FLOATP (right) && XFLOAT_DATA (right) <= 0)) |
5500c422 GM |
4992 | XSETFASTINT (right, 0); |
4993 | if (INTEGERP (right) && XFASTINT (right) == 0) | |
4994 | right = Qnil; | |
4995 | ||
4996 | w->left_margin_width = left; | |
4997 | w->right_margin_width = right; | |
4998 | ||
4999 | ++windows_or_buffers_changed; | |
5000 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5001 | return Qnil; | |
5002 | } | |
5003 | ||
5004 | ||
5005 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5006 | 0, 1, 0, | |
5007 | "Get width of marginal areas of window WINDOW.\n\ | |
5008 | If WINDOW is omitted or nil, use the currently selected window.\n\ | |
5009 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).\n\ | |
5010 | If a marginal area does not exist, its width will be returned\n\ | |
5011 | as nil.") | |
5012 | (window) | |
5013 | Lisp_Object window; | |
5014 | { | |
5015 | struct window *w = decode_window (window); | |
5016 | return Fcons (w->left_margin_width, w->right_margin_width); | |
5017 | } | |
5018 | ||
5019 | ||
7ab12479 | 5020 | \f |
5500c422 GM |
5021 | /*********************************************************************** |
5022 | Smooth scrolling | |
5023 | ***********************************************************************/ | |
5024 | ||
5025 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 1, 0, | |
5026 | "Return the amount by which WINDOW is scrolled vertically.\n\ | |
5027 | Use the selected window if WINDOW is nil or omitted.\n\ | |
5028 | Value is a multiple of the canonical character height of WINDOW.") | |
5029 | (window) | |
5030 | Lisp_Object window; | |
5031 | { | |
47004952 | 5032 | Lisp_Object result; |
5500c422 GM |
5033 | struct frame *f; |
5034 | struct window *w; | |
5035 | ||
5036 | if (NILP (window)) | |
5037 | window = selected_window; | |
47004952 GM |
5038 | else |
5039 | CHECK_WINDOW (window, 0); | |
5500c422 GM |
5040 | w = XWINDOW (window); |
5041 | f = XFRAME (w->frame); | |
5042 | ||
5043 | if (FRAME_WINDOW_P (f)) | |
47004952 | 5044 | result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll); |
5500c422 | 5045 | else |
47004952 GM |
5046 | result = make_number (0); |
5047 | return result; | |
5500c422 GM |
5048 | } |
5049 | ||
5050 | ||
5051 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
47004952 GM |
5052 | 2, 2, 0, |
5053 | "Set amount by which WINDOW should be scrolled vertically to VSCROLL.\n\ | |
5500c422 | 5054 | WINDOW nil or omitted means use the selected window. VSCROLL is a\n\ |
47004952 GM |
5055 | non-negative multiple of the canonical character height of WINDOW.") |
5056 | (window, vscroll) | |
5057 | Lisp_Object window, vscroll; | |
5500c422 GM |
5058 | { |
5059 | struct window *w; | |
5060 | struct frame *f; | |
5061 | ||
5500c422 GM |
5062 | if (NILP (window)) |
5063 | window = selected_window; | |
47004952 GM |
5064 | else |
5065 | CHECK_WINDOW (window, 0); | |
5066 | CHECK_NUMBER_OR_FLOAT (vscroll, 1); | |
5067 | ||
5500c422 GM |
5068 | w = XWINDOW (window); |
5069 | f = XFRAME (w->frame); | |
5070 | ||
5071 | if (FRAME_WINDOW_P (f)) | |
5072 | { | |
5073 | int old_dy = w->vscroll; | |
47004952 GM |
5074 | |
5075 | w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll); | |
5076 | w->vscroll = min (w->vscroll, 0); | |
5500c422 GM |
5077 | |
5078 | /* Adjust glyph matrix of the frame if the virtual display | |
5079 | area becomes larger than before. */ | |
5080 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
5081 | adjust_glyphs (f); | |
5082 | ||
5083 | /* Prevent redisplay shortcuts. */ | |
b1599b4c | 5084 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5500c422 GM |
5085 | } |
5086 | ||
47004952 | 5087 | return Fwindow_vscroll (window); |
5500c422 GM |
5088 | } |
5089 | ||
7bbb5782 GM |
5090 | \f |
5091 | /* Call FN for all leaf windows on frame F. FN is called with the | |
5092 | first argument being a pointer to the leaf window, and with | |
67492200 | 5093 | additional arguments A1..A9. Stops when FN returns 0. */ |
7bbb5782 GM |
5094 | |
5095 | void | |
67492200 | 5096 | foreach_window (f, fn, a1, a2, a3, a4, a5, a6, a7, a8, a9) |
7bbb5782 | 5097 | struct frame *f; |
67492200 GM |
5098 | int (* fn) (); |
5099 | int a1, a2, a3, a4, a5, a6, a7, a8, a9; | |
7bbb5782 | 5100 | { |
67492200 GM |
5101 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), |
5102 | fn, a1, a2, a3, a4, a5, a6, a7, a8, a9); | |
7bbb5782 GM |
5103 | } |
5104 | ||
5105 | ||
5106 | /* Helper function for foreach_window. Call FN for all leaf windows | |
5107 | reachable from W. FN is called with the first argument being a | |
67492200 GM |
5108 | pointer to the leaf window, and with additional arguments A1..A9. |
5109 | Stop when FN returns 0. Value is 0 if stopped by FN. */ | |
7bbb5782 | 5110 | |
67492200 GM |
5111 | static int |
5112 | foreach_window_1 (w, fn, a1, a2, a3, a4, a5, a6, a7, a8, a9) | |
7bbb5782 | 5113 | struct window *w; |
67492200 GM |
5114 | int (* fn) (); |
5115 | int a1, a2, a3, a4, a5, a6, a7, a8, a9; | |
7bbb5782 | 5116 | { |
67492200 GM |
5117 | int cont; |
5118 | ||
5119 | for (cont = 1; w && cont;) | |
7bbb5782 GM |
5120 | { |
5121 | if (!NILP (w->hchild)) | |
67492200 GM |
5122 | cont = foreach_window_1 (XWINDOW (w->hchild), |
5123 | fn, a1, a2, a3, a4, a5, a6, a7, a8, a9); | |
7bbb5782 | 5124 | else if (!NILP (w->vchild)) |
67492200 GM |
5125 | cont = foreach_window_1 (XWINDOW (w->vchild), |
5126 | fn, a1, a2, a3, a4, a5, a6, a7, a8, a9); | |
5127 | else if (fn (w, a1, a2, a3, a4, a5, a6, a7, a8, a9) == 0) | |
5128 | cont = 0; | |
7bbb5782 GM |
5129 | |
5130 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5131 | } | |
67492200 GM |
5132 | |
5133 | return cont; | |
7bbb5782 GM |
5134 | } |
5135 | ||
5136 | ||
5137 | /* Freeze or unfreeze the window start of W if unless it is a | |
5138 | mini-window or the selected window. FREEZE_P non-zero means freeze | |
5139 | the window start. */ | |
5140 | ||
67492200 | 5141 | static int |
7bbb5782 GM |
5142 | freeze_window_start (w, freeze_p) |
5143 | struct window *w; | |
5144 | int freeze_p; | |
5145 | { | |
5146 | if (w == XWINDOW (selected_window) | |
5147 | || MINI_WINDOW_P (w) | |
5148 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 5149 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 GM |
5150 | && w == XWINDOW (Vminibuf_scroll_window))) |
5151 | freeze_p = 0; | |
5152 | ||
5153 | w->frozen_window_start_p = freeze_p; | |
67492200 | 5154 | return 1; |
7bbb5782 GM |
5155 | } |
5156 | ||
5157 | ||
5158 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
5159 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
5160 | means freeze the window start. */ | |
5161 | ||
5162 | void | |
5163 | freeze_window_starts (f, freeze_p) | |
5164 | struct frame *f; | |
5165 | int freeze_p; | |
5166 | { | |
5167 | foreach_window (f, freeze_window_start, freeze_p); | |
5168 | } | |
5500c422 GM |
5169 | |
5170 | \f | |
5171 | /*********************************************************************** | |
5172 | Initialization | |
5173 | ***********************************************************************/ | |
5174 | ||
cbff28e8 RS |
5175 | /* Return 1 if window configurations C1 and C2 |
5176 | describe the same state of affairs. This is used by Fequal. */ | |
5177 | ||
5178 | int | |
2f8274be | 5179 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 5180 | Lisp_Object c1, c2; |
2f8274be | 5181 | int ignore_positions; |
cbff28e8 RS |
5182 | { |
5183 | register struct save_window_data *d1, *d2; | |
5184 | struct Lisp_Vector *sw1, *sw2; | |
5185 | int i; | |
5186 | ||
4d3edcb4 GM |
5187 | if (!WINDOW_CONFIGURATIONP (c1)) |
5188 | wrong_type_argument (Qwindow_configuration_p, c1); | |
5189 | if (!WINDOW_CONFIGURATIONP (c2)) | |
5190 | wrong_type_argument (Qwindow_configuration_p, c2); | |
5191 | ||
cbff28e8 RS |
5192 | d1 = (struct save_window_data *) XVECTOR (c1); |
5193 | d2 = (struct save_window_data *) XVECTOR (c2); | |
5194 | sw1 = XVECTOR (d1->saved_windows); | |
5195 | sw2 = XVECTOR (d2->saved_windows); | |
5196 | ||
5197 | if (! EQ (d1->frame_width, d2->frame_width)) | |
5198 | return 0; | |
5199 | if (! EQ (d1->frame_height, d2->frame_height)) | |
5200 | return 0; | |
5201 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
5202 | return 0; | |
5203 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
5204 | return 0; | |
5205 | /* Don't compare the current_window field directly. | |
5206 | Instead see w1_is_current and w2_is_current, below. */ | |
5207 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
5208 | return 0; | |
2f8274be RS |
5209 | if (! ignore_positions) |
5210 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
5211 | return 0; | |
cbff28e8 RS |
5212 | /* Don't compare the root_window field. |
5213 | We don't require the two configurations | |
5214 | to use the same window object, | |
5215 | and the two root windows must be equivalent | |
5216 | if everything else compares equal. */ | |
5217 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
5218 | return 0; | |
5219 | if (! EQ (d1->min_width, d2->min_width)) | |
5220 | return 0; | |
5221 | if (! EQ (d1->min_height, d2->min_height)) | |
5222 | return 0; | |
5223 | ||
5224 | /* Verify that the two confis have the same number of windows. */ | |
5225 | if (sw1->size != sw2->size) | |
5226 | return 0; | |
5227 | ||
5228 | for (i = 0; i < sw1->size; i++) | |
5229 | { | |
5230 | struct saved_window *p1, *p2; | |
5231 | int w1_is_current, w2_is_current; | |
5232 | ||
5233 | p1 = SAVED_WINDOW_N (sw1, i); | |
5234 | p2 = SAVED_WINDOW_N (sw2, i); | |
5235 | ||
5236 | /* Verify that the current windows in the two | |
5237 | configurations correspond to each other. */ | |
5238 | w1_is_current = EQ (d1->current_window, p1->window); | |
5239 | w2_is_current = EQ (d2->current_window, p2->window); | |
5240 | ||
5241 | if (w1_is_current != w2_is_current) | |
5242 | return 0; | |
5243 | ||
5244 | /* Verify that the corresponding windows do match. */ | |
5245 | if (! EQ (p1->buffer, p2->buffer)) | |
5246 | return 0; | |
5247 | if (! EQ (p1->left, p2->left)) | |
5248 | return 0; | |
5249 | if (! EQ (p1->top, p2->top)) | |
5250 | return 0; | |
5251 | if (! EQ (p1->width, p2->width)) | |
5252 | return 0; | |
5253 | if (! EQ (p1->height, p2->height)) | |
5254 | return 0; | |
cbff28e8 RS |
5255 | if (! EQ (p1->display_table, p2->display_table)) |
5256 | return 0; | |
5257 | if (! EQ (p1->parent, p2->parent)) | |
5258 | return 0; | |
5259 | if (! EQ (p1->prev, p2->prev)) | |
5260 | return 0; | |
2f8274be RS |
5261 | if (! ignore_positions) |
5262 | { | |
5263 | if (! EQ (p1->hscroll, p2->hscroll)) | |
5264 | return 0; | |
5265 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) | |
5266 | return 0; | |
5267 | if (NILP (Fequal (p1->start, p2->start))) | |
5268 | return 0; | |
5269 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
5270 | return 0; | |
5271 | if (NILP (Fequal (p1->mark, p2->mark))) | |
5272 | return 0; | |
5273 | } | |
cbff28e8 RS |
5274 | } |
5275 | ||
5276 | return 1; | |
5277 | } | |
2f8274be RS |
5278 | |
5279 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
5280 | Scompare_window_configurations, 2, 2, 0, | |
5281 | "Compare two window configurations as regards the structure of windows.\n\ | |
5282 | This function ignores details such as the values of point and mark\n\ | |
5283 | and scrolling positions.") | |
5284 | (x, y) | |
5285 | Lisp_Object x, y; | |
5286 | { | |
5287 | if (compare_window_configurations (x, y, 1)) | |
5288 | return Qt; | |
5289 | return Qnil; | |
5290 | } | |
cbff28e8 | 5291 | \f |
dfcf069d | 5292 | void |
7ab12479 JB |
5293 | init_window_once () |
5294 | { | |
1ae1a37d GM |
5295 | struct frame *f = make_terminal_frame (); |
5296 | XSETFRAME (selected_frame, f); | |
5297 | Vterminal_frame = selected_frame; | |
5298 | minibuf_window = f->minibuffer_window; | |
5299 | selected_window = f->selected_window; | |
5300 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
5301 | |
5302 | window_initialized = 1; | |
7ab12479 JB |
5303 | } |
5304 | ||
67492200 GM |
5305 | void |
5306 | init_window () | |
5307 | { | |
5308 | Vwindow_list = Qnil; | |
5309 | } | |
5310 | ||
dfcf069d | 5311 | void |
7ab12479 JB |
5312 | syms_of_window () |
5313 | { | |
fbad6f9a GM |
5314 | Qleft_bitmap_area = intern ("left-bitmap-area"); |
5315 | staticpro (&Qleft_bitmap_area); | |
5316 | Qright_bitmap_area = intern ("right-bitmap-area"); | |
5317 | staticpro (&Qright_bitmap_area); | |
5318 | ||
8a37516b GM |
5319 | Qwindow_size_fixed = intern ("window-size-fixed"); |
5320 | staticpro (&Qwindow_size_fixed); | |
233a4a2c | 5321 | |
543f5fb1 RS |
5322 | staticpro (&Qwindow_configuration_change_hook); |
5323 | Qwindow_configuration_change_hook | |
5324 | = intern ("window-configuration-change-hook"); | |
5325 | ||
7ab12479 JB |
5326 | Qwindowp = intern ("windowp"); |
5327 | staticpro (&Qwindowp); | |
5328 | ||
3f8ab7bd RS |
5329 | Qwindow_configuration_p = intern ("window-configuration-p"); |
5330 | staticpro (&Qwindow_configuration_p); | |
5331 | ||
806b4d9b JB |
5332 | Qwindow_live_p = intern ("window-live-p"); |
5333 | staticpro (&Qwindow_live_p); | |
605be8af | 5334 | |
2cccc823 | 5335 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
5336 | staticpro (&Qtemp_buffer_show_hook); |
5337 | ||
67492200 GM |
5338 | staticpro (&Vwindow_list); |
5339 | ||
7ab12479 JB |
5340 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
5341 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 5342 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
5343 | Used by `with-output-to-temp-buffer'.\n\ |
5344 | If this function is used, then it must do the entire job of showing\n\ | |
5345 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
5346 | Vtemp_buffer_show_function = Qnil; |
5347 | ||
5348 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
5349 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
5350 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
5351 | that the currently selected window is not acceptable.\n\ | |
5352 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
5353 | work using this function."); | |
5354 | Vdisplay_buffer_function = Qnil; | |
5355 | ||
7ab12479 JB |
5356 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
5357 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
5358 | Vminibuf_scroll_window = Qnil; | |
5359 | ||
5360 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
5361 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
5362 | Vother_window_scroll_buffer = Qnil; | |
5363 | ||
44fa5b1e | 5364 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 5365 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 5366 | pop_up_frames = 0; |
7ab12479 | 5367 | |
44fa5b1e | 5368 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 5369 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 5370 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 5371 | \n\ |
44fa5b1e JB |
5372 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
5373 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
5374 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 5375 | |
a90712c2 RS |
5376 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
5377 | "*List of buffer names that should have their own special frames.\n\ | |
5378 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 5379 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 5380 | \n\ |
524580a4 RS |
5381 | An element of the list can be a list instead of just a string.\n\ |
5382 | There are two ways to use a list as an element:\n\ | |
5383 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
5384 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5385 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
5386 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
4caa7448 RS |
5387 | All this is done by the function found in `special-display-function'.\n\ |
5388 | \n\ | |
5389 | If this variable appears \"not to work\", because you add a name to it\n\ | |
5390 | but that buffer still appears in the selected window, look at the\n\ | |
5391 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5392 | Those variables take precedence over this one."); | |
a90712c2 RS |
5393 | Vspecial_display_buffer_names = Qnil; |
5394 | ||
5395 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
5396 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
5397 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
5398 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 5399 | using `special-display-function'.\n\ |
3548e138 | 5400 | \n\ |
524580a4 RS |
5401 | An element of the list can be a list instead of just a string.\n\ |
5402 | There are two ways to use a list as an element:\n\ | |
5403 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
5404 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
5405 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
5406 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
4caa7448 RS |
5407 | All this is done by the function found in `special-display-function'.\n\ |
5408 | \n\ | |
5409 | If this variable appears \"not to work\", because you add a regexp to it\n\ | |
5410 | but the matching buffers still appear in the selected window, look at the\n\ | |
5411 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
5412 | Those variables take precedence over this one."); | |
a90712c2 RS |
5413 | Vspecial_display_regexps = Qnil; |
5414 | ||
5415 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
5416 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
5417 | It is called with two arguments, the buffer and optional buffer specific\n\ |
5418 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 5419 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 5420 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
5421 | \n\ |
5422 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
5423 | or matches a regexp in `special-display-regexps'."); | |
5424 | Vspecial_display_function = Qnil; | |
5425 | ||
855d8627 RS |
5426 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
5427 | "*List of buffer names that should appear in the selected window.\n\ | |
5428 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
5429 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 5430 | in some other window.\n\ |
855d8627 RS |
5431 | \n\ |
5432 | An element of the list can be a cons cell instead of just a string.\n\ | |
5433 | Then the car must be a string, which specifies the buffer name.\n\ | |
5434 | This is for compatibility with `special-display-buffer-names';\n\ | |
5435 | the cdr of the cons cell is ignored.\n\ | |
5436 | \n\ | |
5437 | See also `same-window-regexps'."); | |
5438 | Vsame_window_buffer_names = Qnil; | |
5439 | ||
5440 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
5441 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
5442 | If a buffer name matches one of these regexps, then displaying it\n\ | |
5443 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
5444 | in the selected window, rather than making it appear in some other window.\n\ | |
5445 | \n\ | |
5446 | An element of the list can be a cons cell instead of just a string.\n\ | |
5447 | Then the car must be a string, which specifies the buffer name.\n\ | |
5448 | This is for compatibility with `special-display-buffer-names';\n\ | |
5449 | the cdr of the cons cell is ignored.\n\ | |
5450 | \n\ | |
5451 | See also `same-window-buffer-names'."); | |
5452 | Vsame_window_regexps = Qnil; | |
5453 | ||
7ab12479 JB |
5454 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
5455 | "*Non-nil means display-buffer should make new windows."); | |
5456 | pop_up_windows = 1; | |
5457 | ||
5458 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
5459 | "*Number of lines of continuity when scrolling by screenfuls."); | |
5460 | next_screen_context_lines = 2; | |
5461 | ||
5462 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
5463 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
5464 | If there is only one window, it is split regardless of this value."); | |
5465 | split_height_threshold = 500; | |
5466 | ||
5467 | DEFVAR_INT ("window-min-height", &window_min_height, | |
5468 | "*Delete any window less than this tall (including its mode line)."); | |
5469 | window_min_height = 4; | |
5470 | ||
5471 | DEFVAR_INT ("window-min-width", &window_min_width, | |
5472 | "*Delete any window less than this wide."); | |
5473 | window_min_width = 10; | |
5474 | ||
5500c422 GM |
5475 | DEFVAR_LISP ("scroll-preserve-screen-position", |
5476 | &Vscroll_preserve_screen_position, | |
9317a85d | 5477 | "*Nonzero means scroll commands move point to keep its screen line unchanged."); |
5500c422 | 5478 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 5479 | |
543f5fb1 RS |
5480 | DEFVAR_LISP ("window-configuration-change-hook", |
5481 | &Vwindow_configuration_change_hook, | |
5482 | "Functions to call when window configuration changes.\n\ | |
e3e041eb | 5483 | The selected frame is the one whose configuration has changed."); |
543f5fb1 RS |
5484 | Vwindow_configuration_change_hook = Qnil; |
5485 | ||
7ab12479 JB |
5486 | defsubr (&Sselected_window); |
5487 | defsubr (&Sminibuffer_window); | |
5488 | defsubr (&Swindow_minibuffer_p); | |
5489 | defsubr (&Swindowp); | |
806b4d9b | 5490 | defsubr (&Swindow_live_p); |
7ab12479 JB |
5491 | defsubr (&Spos_visible_in_window_p); |
5492 | defsubr (&Swindow_buffer); | |
5493 | defsubr (&Swindow_height); | |
5494 | defsubr (&Swindow_width); | |
5495 | defsubr (&Swindow_hscroll); | |
5496 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
5497 | defsubr (&Swindow_redisplay_end_trigger); |
5498 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 5499 | defsubr (&Swindow_edges); |
d5783c40 JB |
5500 | defsubr (&Scoordinates_in_window_p); |
5501 | defsubr (&Swindow_at); | |
7ab12479 JB |
5502 | defsubr (&Swindow_point); |
5503 | defsubr (&Swindow_start); | |
5504 | defsubr (&Swindow_end); | |
5505 | defsubr (&Sset_window_point); | |
5506 | defsubr (&Sset_window_start); | |
5507 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 5508 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
5509 | defsubr (&Swindow_display_table); |
5510 | defsubr (&Sset_window_display_table); | |
5511 | defsubr (&Snext_window); | |
5512 | defsubr (&Sprevious_window); | |
5513 | defsubr (&Sother_window); | |
5514 | defsubr (&Sget_lru_window); | |
5515 | defsubr (&Sget_largest_window); | |
5516 | defsubr (&Sget_buffer_window); | |
5517 | defsubr (&Sdelete_other_windows); | |
5518 | defsubr (&Sdelete_windows_on); | |
5519 | defsubr (&Sreplace_buffer_in_windows); | |
5520 | defsubr (&Sdelete_window); | |
5521 | defsubr (&Sset_window_buffer); | |
5522 | defsubr (&Sselect_window); | |
4628f7a4 EN |
5523 | defsubr (&Sspecial_display_p); |
5524 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
5525 | defsubr (&Sdisplay_buffer); |
5526 | defsubr (&Ssplit_window); | |
5527 | defsubr (&Senlarge_window); | |
5528 | defsubr (&Sshrink_window); | |
5529 | defsubr (&Sscroll_up); | |
5530 | defsubr (&Sscroll_down); | |
5531 | defsubr (&Sscroll_left); | |
5532 | defsubr (&Sscroll_right); | |
ccd0664b | 5533 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
5534 | defsubr (&Sscroll_other_window); |
5535 | defsubr (&Srecenter); | |
5536 | defsubr (&Smove_to_window_line); | |
5537 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 5538 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
5539 | defsubr (&Sset_window_configuration); |
5540 | defsubr (&Scurrent_window_configuration); | |
5541 | defsubr (&Ssave_window_excursion); | |
5500c422 GM |
5542 | defsubr (&Sset_window_margins); |
5543 | defsubr (&Swindow_margins); | |
5544 | defsubr (&Swindow_vscroll); | |
5545 | defsubr (&Sset_window_vscroll); | |
2f8274be | 5546 | defsubr (&Scompare_window_configurations); |
67492200 | 5547 | defsubr (&Swindow_list); |
7ab12479 JB |
5548 | } |
5549 | ||
dfcf069d | 5550 | void |
7ab12479 JB |
5551 | keys_of_window () |
5552 | { | |
5553 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
5554 | initial_define_key (control_x_map, '2', "split-window"); | |
5555 | initial_define_key (control_x_map, '0', "delete-window"); | |
5556 | initial_define_key (control_x_map, 'o', "other-window"); | |
5557 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
5558 | initial_define_key (control_x_map, '<', "scroll-left"); | |
5559 | initial_define_key (control_x_map, '>', "scroll-right"); | |
5560 | ||
5561 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
5562 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
5563 | initial_define_key (meta_map, 'v', "scroll-down"); | |
5564 | ||
5565 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
5566 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
5567 | } |