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" |
d2b35234 | 32 | #include "blockinput.h" |
dfcf069d | 33 | #include "dispextern.h" |
6d55d620 | 34 | #ifdef HAVE_X_WINDOWS |
dfcf069d AS |
35 | #include "xterm.h" |
36 | #endif | |
7ab12479 | 37 | |
806b4d9b | 38 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 | 39 | |
5e14b1fc | 40 | static struct window *decode_window P_ ((Lisp_Object)); |
7ab12479 JB |
41 | |
42 | /* This is the window in which the terminal's cursor should | |
43 | be left when nothing is being done with it. This must | |
44 | always be a leaf window, and its buffer is selected by | |
45 | the top level editing loop at the end of each command. | |
46 | ||
47 | This value is always the same as | |
44fa5b1e | 48 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
49 | |
50 | Lisp_Object selected_window; | |
51 | ||
44fa5b1e | 52 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
53 | Note that you cannot test for minibufferness of an arbitrary window |
54 | by comparing against this; but you can test for minibufferness of | |
55 | the selected window. */ | |
56 | Lisp_Object minibuf_window; | |
57 | ||
58 | /* Non-nil means it is the window for C-M-v to scroll | |
59 | when the minibuffer is selected. */ | |
60 | Lisp_Object Vminibuf_scroll_window; | |
61 | ||
62 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
63 | Lisp_Object Vother_window_scroll_buffer; | |
64 | ||
7ab12479 JB |
65 | /* Non-nil means it's function to call to display temp buffers. */ |
66 | Lisp_Object Vtemp_buffer_show_function; | |
67 | ||
68 | /* If a window gets smaller than either of these, it is removed. */ | |
69 | int window_min_height; | |
70 | int window_min_width; | |
71 | ||
72 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
73 | int pop_up_windows; | |
74 | ||
44fa5b1e JB |
75 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
76 | int pop_up_frames; | |
7ab12479 JB |
77 | |
78 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 79 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
80 | |
81 | /* Function to call to handle Fdisplay_buffer. */ | |
82 | Lisp_Object Vdisplay_buffer_function; | |
83 | ||
a90712c2 RS |
84 | /* List of buffer *names* for buffers that should have their own frames. */ |
85 | Lisp_Object Vspecial_display_buffer_names; | |
86 | ||
87 | /* List of regexps for buffer names that should have their own frames. */ | |
88 | Lisp_Object Vspecial_display_regexps; | |
89 | ||
90 | /* Function to pop up a special frame. */ | |
91 | Lisp_Object Vspecial_display_function; | |
92 | ||
855d8627 RS |
93 | /* List of buffer *names* for buffers to appear in selected window. */ |
94 | Lisp_Object Vsame_window_buffer_names; | |
95 | ||
96 | /* List of regexps for buffer names to appear in selected window. */ | |
97 | Lisp_Object Vsame_window_regexps; | |
98 | ||
a58ec57d RS |
99 | /* Hook run at end of temp_output_buffer_show. */ |
100 | Lisp_Object Qtemp_buffer_show_hook; | |
101 | ||
37962e60 | 102 | /* Fdisplay_buffer always splits the largest window |
7ab12479 JB |
103 | if that window is more than this high. */ |
104 | int split_height_threshold; | |
105 | ||
106 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
107 | int next_screen_context_lines; | |
108 | ||
109 | /* Incremented for each window created. */ | |
110 | static int sequence_number; | |
111 | ||
5b03d3c0 RS |
112 | /* Nonzero after init_window_once has finished. */ |
113 | static int window_initialized; | |
114 | ||
543f5fb1 RS |
115 | /* Hook to run when window config changes. */ |
116 | Lisp_Object Qwindow_configuration_change_hook; | |
117 | Lisp_Object Vwindow_configuration_change_hook; | |
118 | ||
9317a85d RS |
119 | /* Nonzero means scroll commands try to put point |
120 | at the same screen height as previously. */ | |
121 | static int scroll_preserve_screen_position; | |
122 | ||
91a78190 | 123 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 124 | static int inhibit_frame_unsplittable; |
7d601aaa | 125 | |
7ab12479 | 126 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 | 127 | |
9317a85d RS |
128 | extern int scroll_margin; |
129 | ||
dba06815 | 130 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
131 | \f |
132 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
133 | "Returns t if OBJECT is a window.") |
134 | (object) | |
135 | Lisp_Object object; | |
7ab12479 | 136 | { |
413430c5 | 137 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
138 | } |
139 | ||
806b4d9b | 140 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
141 | "Returns t if OBJECT is a window which is currently visible.") |
142 | (object) | |
143 | Lisp_Object object; | |
605be8af | 144 | { |
413430c5 | 145 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
146 | } |
147 | ||
7ab12479 JB |
148 | Lisp_Object |
149 | make_window () | |
150 | { | |
cffec418 | 151 | Lisp_Object val; |
7ab12479 | 152 | register struct window *p; |
cffec418 KH |
153 | register struct Lisp_Vector *vec; |
154 | int i; | |
155 | ||
156 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
157 | for (i = 0; i < VECSIZE (struct window); i++) | |
158 | vec->contents[i] = Qnil; | |
159 | vec->size = VECSIZE (struct window); | |
160 | p = (struct window *)vec; | |
d834a2e9 KH |
161 | XSETFASTINT (p->sequence_number, ++sequence_number); |
162 | XSETFASTINT (p->left, 0); | |
163 | XSETFASTINT (p->top, 0); | |
164 | XSETFASTINT (p->height, 0); | |
165 | XSETFASTINT (p->width, 0); | |
166 | XSETFASTINT (p->hscroll, 0); | |
9d1ec831 | 167 | XSETFASTINT (p->last_point, 0); |
d834a2e9 KH |
168 | XSETFASTINT (p->last_point_x, 0); |
169 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
170 | p->start = Fmake_marker (); |
171 | p->pointm = Fmake_marker (); | |
d834a2e9 | 172 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 173 | p->frame = Qnil; |
7ab12479 JB |
174 | p->display_table = Qnil; |
175 | p->dedicated = Qnil; | |
cffec418 | 176 | XSETWINDOW (val, p); |
7ab12479 JB |
177 | return val; |
178 | } | |
179 | ||
180 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
181 | "Return the window that the cursor now appears in and commands apply to.") | |
182 | () | |
183 | { | |
184 | return selected_window; | |
185 | } | |
186 | ||
83762ba4 JB |
187 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
188 | "Return the window used now for minibuffers.\n\ | |
189 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
190 | used by that frame.") | |
191 | (frame) | |
192 | Lisp_Object frame; | |
7ab12479 | 193 | { |
83762ba4 | 194 | if (NILP (frame)) |
74112613 | 195 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
196 | else |
197 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 JB |
198 | |
199 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
200 | } |
201 | ||
605be8af | 202 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
203 | "Returns non-nil if WINDOW is a minibuffer window.") |
204 | (window) | |
205 | Lisp_Object window; | |
206 | { | |
207 | struct window *w = decode_window (window); | |
208 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
209 | } | |
210 | ||
211 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
212 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 213 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
214 | Returns nil if that position is scrolled vertically out of view.\n\ |
215 | POS defaults to point; WINDOW, to the selected window.") | |
216 | (pos, window) | |
217 | Lisp_Object pos, window; | |
218 | { | |
219 | register struct window *w; | |
220 | register int top; | |
221 | register int height; | |
222 | register int posint; | |
223 | register struct buffer *buf; | |
224 | struct position posval; | |
afdb2485 | 225 | int hscroll; |
7ab12479 | 226 | |
265a9e55 | 227 | if (NILP (pos)) |
5ce7b543 | 228 | posint = PT; |
7ab12479 JB |
229 | else |
230 | { | |
231 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
232 | posint = XINT (pos); | |
233 | } | |
234 | ||
605be8af | 235 | w = decode_window (window); |
7ab12479 | 236 | top = marker_position (w->start); |
afdb2485 | 237 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
238 | |
239 | if (posint < top) | |
240 | return Qnil; | |
241 | ||
242 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
243 | ||
244 | buf = XBUFFER (w->buffer); | |
3cd21523 RS |
245 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) |
246 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)) | |
7ab12479 | 247 | { |
44fa5b1e | 248 | /* If frame is up to date, |
7ab12479 JB |
249 | use the info recorded about how much text fit on it. */ |
250 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
251 | || (XFASTINT (w->window_end_vpos) < height)) | |
252 | return Qt; | |
253 | return Qnil; | |
254 | } | |
255 | else | |
256 | { | |
33eb4ede | 257 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
258 | return Qnil; |
259 | ||
61b5322b RS |
260 | /* w->start can be out of range. If it is, do something reasonable. */ |
261 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
262 | return Qnil; | |
263 | ||
7ab12479 | 264 | /* If that info is not correct, calculate afresh */ |
5a255667 KH |
265 | /* BUG FIX for the 7th arg (TOHPOS). |
266 | ||
267 | '0' is harmless, however, ' - (1 << (BITS_PER_SHORT - 1))' is | |
268 | more appropriate here. In case of HSCROLL > 0, this can avoid | |
269 | needless calculation done until (HPOS == 0). | |
270 | ||
271 | We want to determine if the position POSINT is in HEIGHT or | |
272 | not. We don't have to do calculation until (HPOS == 0). We | |
273 | can stop it when VPOS goes beyond HEIGHT. */ | |
4efffd80 | 274 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0, |
5a255667 | 275 | posint, height, - (1 << (BITS_PER_SHORT - 1)), |
535e0b8e | 276 | window_internal_width (w) - 1, |
e37f06d7 | 277 | hscroll, 0, w); |
7ab12479 JB |
278 | |
279 | return posval.vpos < height ? Qt : Qnil; | |
280 | } | |
281 | } | |
282 | \f | |
283 | static struct window * | |
284 | decode_window (window) | |
285 | register Lisp_Object window; | |
286 | { | |
265a9e55 | 287 | if (NILP (window)) |
7ab12479 JB |
288 | return XWINDOW (selected_window); |
289 | ||
605be8af | 290 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
291 | return XWINDOW (window); |
292 | } | |
293 | ||
294 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
295 | "Return the buffer that WINDOW is displaying.") | |
296 | (window) | |
297 | Lisp_Object window; | |
298 | { | |
299 | return decode_window (window)->buffer; | |
300 | } | |
301 | ||
302 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
303 | "Return the number of lines in WINDOW (including its mode line).") | |
304 | (window) | |
305 | Lisp_Object window; | |
306 | { | |
307 | return decode_window (window)->height; | |
308 | } | |
309 | ||
310 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
311 | "Return the number of display columns in WINDOW.\n\ |
312 | This is the width that is usable columns available for text in WINDOW.\n\ | |
313 | If you want to find out how many columns WINDOW takes up,\n\ | |
314 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
315 | (window) |
316 | Lisp_Object window; | |
317 | { | |
ee61d94e | 318 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
319 | } |
320 | ||
321 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
322 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
323 | (window) | |
324 | Lisp_Object window; | |
325 | { | |
326 | return decode_window (window)->hscroll; | |
327 | } | |
328 | ||
329 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
330 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
331 | NCOL should be zero or positive.") | |
332 | (window, ncol) | |
333 | register Lisp_Object window, ncol; | |
334 | { | |
335 | register struct window *w; | |
336 | ||
337 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 338 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 339 | w = decode_window (window); |
7f4161e0 | 340 | if (XINT (w->hscroll) != XINT (ncol)) |
1479ef51 | 341 | XBUFFER (w->buffer)->clip_changed = 1; /* Prevent redisplay shortcuts */ |
7ab12479 JB |
342 | w->hscroll = ncol; |
343 | return ncol; | |
344 | } | |
345 | ||
190eb263 RS |
346 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
347 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
348 | "Return WINDOW's redisplay end trigger value.\n\ | |
349 | See `set-window-redisplay-end-trigger' for more information.") | |
350 | (window) | |
351 | Lisp_Object window; | |
352 | { | |
353 | return decode_window (window)->redisplay_end_trigger; | |
354 | } | |
355 | ||
356 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
357 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
358 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
359 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
360 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
361 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
362 | with two arguments: WINDOW, and the end trigger value.\n\ | |
363 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
364 | (window, value) |
365 | register Lisp_Object window, value; | |
366 | { | |
367 | register struct window *w; | |
368 | ||
369 | w = decode_window (window); | |
370 | w->redisplay_end_trigger = value; | |
371 | return value; | |
372 | } | |
373 | ||
7ab12479 JB |
374 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
375 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 376 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
377 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
378 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
379 | and its mode-line.") | |
380 | (window) | |
381 | Lisp_Object window; | |
382 | { | |
383 | register struct window *w = decode_window (window); | |
384 | ||
385 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 386 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
387 | Fcons (make_number (XFASTINT (w->top) |
388 | + XFASTINT (w->height)), | |
389 | Qnil)))); | |
390 | } | |
391 | ||
d5783c40 JB |
392 | /* Test if the character at column *x, row *y is within window *w. |
393 | If it is not, return 0; | |
394 | if it is in the window's text area, | |
395 | set *x and *y to its location relative to the upper left corner | |
396 | of the window, and | |
397 | return 1; | |
398 | if it is on the window's modeline, return 2; | |
399 | if it is on the border between the window and its right sibling, | |
400 | return 3. */ | |
401 | static int | |
402 | coordinates_in_window (w, x, y) | |
403 | register struct window *w; | |
404 | register int *x, *y; | |
405 | { | |
406 | register int left = XINT (w->left); | |
111e5992 RS |
407 | register int right_edge = WINDOW_RIGHT_EDGE (w); |
408 | register int left_margin = WINDOW_LEFT_MARGIN (w); | |
409 | register int right_margin = WINDOW_RIGHT_MARGIN (w); | |
d5783c40 JB |
410 | register int window_height = XINT (w->height); |
411 | register int top = XFASTINT (w->top); | |
111e5992 RS |
412 | |
413 | if ( *x < left || *x >= right_edge | |
d5783c40 JB |
414 | || *y < top || *y >= top + window_height) |
415 | return 0; | |
416 | ||
111e5992 RS |
417 | if (left_margin != left && *x < left_margin && *x >= left) |
418 | return 3; | |
419 | ||
420 | if (right_margin != right_edge && *x >= right_margin && *x < right_edge) | |
421 | return 3; | |
422 | ||
d5783c40 JB |
423 | /* Is the character is the mode line? */ |
424 | if (*y == top + window_height - 1 | |
05c2896a | 425 | && ! MINI_WINDOW_P (w)) |
d5783c40 | 426 | return 2; |
37962e60 | 427 | |
111e5992 | 428 | *x -= WINDOW_LEFT_MARGIN (w); |
d5783c40 JB |
429 | *y -= top; |
430 | return 1; | |
431 | } | |
432 | ||
433 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
434 | Scoordinates_in_window_p, 2, 2, 0, | |
435 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 436 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 437 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 438 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 439 | frame.\n\ |
d5783c40 JB |
440 | If COORDINATES are in the text portion of WINDOW,\n\ |
441 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 442 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 443 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 444 | `vertical-line' is returned.") |
d5783c40 JB |
445 | (coordinates, window) |
446 | register Lisp_Object coordinates, window; | |
447 | { | |
448 | int x, y; | |
449 | ||
605be8af | 450 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
451 | CHECK_CONS (coordinates, 1); |
452 | x = XINT (Fcar (coordinates)); | |
453 | y = XINT (Fcdr (coordinates)); | |
454 | ||
455 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
456 | { | |
457 | case 0: /* NOT in window at all. */ | |
458 | return Qnil; | |
459 | ||
460 | case 1: /* In text part of window. */ | |
34c0dab2 | 461 | return Fcons (make_number (x), make_number (y)); |
d5783c40 JB |
462 | |
463 | case 2: /* In mode line of window. */ | |
464 | return Qmode_line; | |
37962e60 | 465 | |
d5783c40 | 466 | case 3: /* On right border of window. */ |
e5d77022 | 467 | return Qvertical_line; |
d5783c40 JB |
468 | |
469 | default: | |
470 | abort (); | |
471 | } | |
472 | } | |
473 | ||
7ab12479 | 474 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
475 | Lisp_Object. If x, y is on the window's modeline, set *part |
476 | to 1; if it is on the separating line between the window and its | |
477 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
478 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 479 | Lisp_Object |
44fa5b1e JB |
480 | window_from_coordinates (frame, x, y, part) |
481 | FRAME_PTR frame; | |
7ab12479 | 482 | int x, y; |
d5783c40 | 483 | int *part; |
7ab12479 JB |
484 | { |
485 | register Lisp_Object tem, first; | |
486 | ||
44fa5b1e | 487 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 488 | |
d5783c40 | 489 | do |
7ab12479 JB |
490 | { |
491 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
492 | ||
493 | if (found) | |
494 | { | |
d5783c40 | 495 | *part = found - 1; |
7ab12479 JB |
496 | return tem; |
497 | } | |
498 | ||
d5783c40 | 499 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 500 | } |
d5783c40 | 501 | while (! EQ (tem, first)); |
37962e60 | 502 | |
d5783c40 | 503 | return Qnil; |
7ab12479 JB |
504 | } |
505 | ||
ab17c3f2 | 506 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 507 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
508 | If omitted, FRAME defaults to the currently selected frame.\n\ |
509 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 510 | column 0.") |
b0c33a94 RS |
511 | (x, y, frame) |
512 | Lisp_Object x, y, frame; | |
7ab12479 JB |
513 | { |
514 | int part; | |
515 | ||
44fa5b1e | 516 | if (NILP (frame)) |
74112613 | 517 | XSETFRAME (frame, selected_frame); |
d5783c40 | 518 | else |
44fa5b1e | 519 | CHECK_LIVE_FRAME (frame, 2); |
b0c33a94 RS |
520 | CHECK_NUMBER (x, 0); |
521 | CHECK_NUMBER (y, 1); | |
7ab12479 | 522 | |
44fa5b1e | 523 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 524 | XINT (x), XINT (y), |
7ab12479 JB |
525 | &part); |
526 | } | |
527 | ||
528 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
529 | "Return current value of point in WINDOW.\n\ | |
530 | For a nonselected window, this is the value point would have\n\ | |
531 | if that window were selected.\n\ | |
532 | \n\ | |
533 | Note that, when WINDOW is the selected window and its buffer\n\ | |
534 | is also currently selected, the value returned is the same as (point).\n\ | |
535 | It would be more strictly correct to return the `top-level' value\n\ | |
536 | of point, outside of any save-excursion forms.\n\ | |
537 | But that is hard to define.") | |
538 | (window) | |
539 | Lisp_Object window; | |
540 | { | |
541 | register struct window *w = decode_window (window); | |
542 | ||
543 | if (w == XWINDOW (selected_window) | |
544 | && current_buffer == XBUFFER (w->buffer)) | |
545 | return Fpoint (); | |
546 | return Fmarker_position (w->pointm); | |
547 | } | |
548 | ||
549 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
550 | "Return position at which display currently starts in WINDOW.\n\ |
551 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
552 | (window) |
553 | Lisp_Object window; | |
554 | { | |
555 | return Fmarker_position (decode_window (window)->start); | |
556 | } | |
557 | ||
8646118f RS |
558 | /* This is text temporarily removed from the doc string below. |
559 | ||
7250968e RS |
560 | This function returns nil if the position is not currently known.\n\ |
561 | That happens when redisplay is preempted and doesn't finish.\n\ | |
562 | If in that case you want to compute where the end of the window would\n\ | |
563 | have been if redisplay had finished, do this:\n\ | |
564 | (save-excursion\n\ | |
565 | (goto-char (window-start window))\n\ | |
566 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
567 | (point))") */ |
568 | ||
478292ed | 569 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
8646118f RS |
570 | "Return position at which display currently ends in WINDOW.\n\ |
571 | This is updated by redisplay, when it runs to completion.\n\ | |
572 | Simply changing the buffer text or setting `window-start'\n\ | |
478292ed RS |
573 | does not update this value.\n\ |
574 | If UP-TO-DATE is non-nil, compute the up-to-date position\n\ | |
575 | if it isn't already recorded.") | |
576 | (window, update) | |
577 | Lisp_Object window, update; | |
7ab12479 JB |
578 | { |
579 | Lisp_Object value; | |
580 | struct window *w = decode_window (window); | |
5a41ab94 RS |
581 | Lisp_Object buf; |
582 | ||
583 | buf = w->buffer; | |
584 | CHECK_BUFFER (buf, 0); | |
585 | ||
8646118f | 586 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
587 | /* If we don't know the end position, return nil. |
588 | The user can compute it with vertical-motion if he wants to. | |
589 | It would be nicer to do it automatically, | |
590 | but that's so slow that it would probably bother people. */ | |
591 | if (NILP (w->window_end_valid)) | |
592 | return Qnil; | |
8646118f | 593 | #endif |
7250968e | 594 | |
478292ed RS |
595 | if (! NILP (update) |
596 | && ! (! NILP (w->window_end_valid) | |
597 | && XFASTINT (w->last_modified) >= MODIFF)) | |
598 | { | |
599 | int opoint = PT, opoint_byte = PT_BYTE; | |
600 | TEMP_SET_PT_BOTH (XMARKER (w->start)->charpos, | |
601 | XMARKER (w->start)->bytepos); | |
602 | Fvertical_motion (make_number (window_internal_height (w)), Qnil); | |
603 | XSETINT (value, PT); | |
604 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
605 | } | |
606 | else | |
607 | XSETINT (value, | |
608 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
609 | |
610 | return value; | |
611 | } | |
612 | ||
613 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
614 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
615 | (window, pos) | |
616 | Lisp_Object window, pos; | |
617 | { | |
618 | register struct window *w = decode_window (window); | |
619 | ||
620 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
621 | if (w == XWINDOW (selected_window)) | |
622 | Fgoto_char (pos); | |
623 | else | |
624 | set_marker_restricted (w->pointm, pos, w->buffer); | |
625 | ||
626 | return pos; | |
627 | } | |
628 | ||
629 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
630 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
631 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
632 | from overriding motion of point in order to display at this exact start.") | |
633 | (window, pos, noforce) | |
634 | Lisp_Object window, pos, noforce; | |
635 | { | |
636 | register struct window *w = decode_window (window); | |
637 | ||
638 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
639 | set_marker_restricted (w->start, pos, w->buffer); | |
640 | /* this is not right, but much easier than doing what is right. */ | |
641 | w->start_at_line_beg = Qnil; | |
265a9e55 | 642 | if (NILP (noforce)) |
7ab12479 JB |
643 | w->force_start = Qt; |
644 | w->update_mode_line = Qt; | |
d834a2e9 | 645 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 646 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
647 | if (!EQ (window, selected_window)) |
648 | windows_or_buffers_changed++; | |
7ab12479 JB |
649 | return pos; |
650 | } | |
651 | ||
652 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
653 | 1, 1, 0, | |
654 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 655 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
656 | (window) |
657 | Lisp_Object window; | |
658 | { | |
659 | return decode_window (window)->dedicated; | |
660 | } | |
661 | ||
d207b766 RS |
662 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
663 | Sset_window_dedicated_p, 2, 2, 0, | |
664 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
665 | If it is dedicated, Emacs will not automatically change\n\ | |
666 | which buffer appears in it.\n\ | |
667 | The second argument is the new value for the dedication flag;\n\ | |
668 | non-nil means yes.") | |
7ab12479 JB |
669 | (window, arg) |
670 | Lisp_Object window, arg; | |
671 | { | |
672 | register struct window *w = decode_window (window); | |
673 | ||
265a9e55 | 674 | if (NILP (arg)) |
7ab12479 JB |
675 | w->dedicated = Qnil; |
676 | else | |
d207b766 | 677 | w->dedicated = Qt; |
7ab12479 JB |
678 | |
679 | return w->dedicated; | |
680 | } | |
681 | ||
682 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
683 | 0, 1, 0, | |
684 | "Return the display-table that WINDOW is using.") | |
685 | (window) | |
686 | Lisp_Object window; | |
687 | { | |
688 | return decode_window (window)->display_table; | |
689 | } | |
690 | ||
691 | /* Get the display table for use currently on window W. | |
692 | This is either W's display table or W's buffer's display table. | |
693 | Ignore the specified tables if they are not valid; | |
694 | if no valid table is specified, return 0. */ | |
695 | ||
319315f1 | 696 | struct Lisp_Char_Table * |
7ab12479 JB |
697 | window_display_table (w) |
698 | struct window *w; | |
699 | { | |
700 | Lisp_Object tem; | |
701 | tem = w->display_table; | |
319315f1 RS |
702 | if (DISP_TABLE_P (tem)) |
703 | return XCHAR_TABLE (tem); | |
171d003c RS |
704 | if (NILP (w->buffer)) |
705 | return 0; | |
706 | ||
7ab12479 | 707 | tem = XBUFFER (w->buffer)->display_table; |
319315f1 RS |
708 | if (DISP_TABLE_P (tem)) |
709 | return XCHAR_TABLE (tem); | |
7ab12479 | 710 | tem = Vstandard_display_table; |
319315f1 RS |
711 | if (DISP_TABLE_P (tem)) |
712 | return XCHAR_TABLE (tem); | |
7ab12479 JB |
713 | return 0; |
714 | } | |
715 | ||
3a2712f9 | 716 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
717 | "Set WINDOW's display-table to TABLE.") |
718 | (window, table) | |
719 | register Lisp_Object window, table; | |
720 | { | |
721 | register struct window *w; | |
722 | register Lisp_Object z; /* Return value. */ | |
723 | ||
724 | w = decode_window (window); | |
725 | w->display_table = table; | |
726 | return table; | |
727 | } | |
728 | \f | |
729 | /* Record info on buffer window w is displaying | |
730 | when it is about to cease to display that buffer. */ | |
dfcf069d | 731 | static void |
7ab12479 JB |
732 | unshow_buffer (w) |
733 | register struct window *w; | |
734 | { | |
12cae7c0 | 735 | Lisp_Object buf; |
b73ea88e | 736 | struct buffer *b; |
7ab12479 | 737 | |
12cae7c0 | 738 | buf = w->buffer; |
b73ea88e RS |
739 | b = XBUFFER (buf); |
740 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
741 | abort (); |
742 | ||
b73ea88e RS |
743 | if (w == XWINDOW (b->last_selected_window)) |
744 | b->last_selected_window = Qnil; | |
86e48436 | 745 | |
573f41ab | 746 | #if 0 |
7ab12479 JB |
747 | if (w == XWINDOW (selected_window) |
748 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
749 | /* Do this except when the selected window's buffer | |
750 | is being removed from some other window. */ | |
573f41ab RS |
751 | #endif |
752 | /* last_window_start records the start position that this buffer | |
753 | had in the last window to be disconnected from it. | |
754 | Now that this statement is unconditional, | |
755 | it is possible for the buffer to be displayed in the | |
756 | selected window, while last_window_start reflects another | |
757 | window which was recently showing the same buffer. | |
758 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 759 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
760 | |
761 | /* Point in the selected window's buffer | |
762 | is actually stored in that buffer, and the window's pointm isn't used. | |
763 | So don't clobber point in that buffer. */ | |
764 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
b73ea88e RS |
765 | temp_set_point_both (b, |
766 | clip_to_bounds (BUF_BEGV (b), | |
767 | XMARKER (w->pointm)->charpos, | |
768 | BUF_ZV (b)), | |
769 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
770 | marker_byte_position (w->pointm), | |
771 | BUF_ZV_BYTE (b))); | |
7ab12479 JB |
772 | } |
773 | ||
774 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 775 | static void |
7ab12479 JB |
776 | replace_window (old, replacement) |
777 | Lisp_Object old, replacement; | |
778 | { | |
779 | register Lisp_Object tem; | |
780 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
781 | ||
44fa5b1e JB |
782 | /* If OLD is its frame's root_window, then replacement is the new |
783 | root_window for that frame. */ | |
7ab12479 | 784 | |
7f4161e0 | 785 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 786 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
787 | |
788 | p->left = o->left; | |
789 | p->top = o->top; | |
790 | p->width = o->width; | |
791 | p->height = o->height; | |
792 | ||
793 | p->next = tem = o->next; | |
265a9e55 | 794 | if (!NILP (tem)) |
7ab12479 JB |
795 | XWINDOW (tem)->prev = replacement; |
796 | ||
797 | p->prev = tem = o->prev; | |
265a9e55 | 798 | if (!NILP (tem)) |
7ab12479 JB |
799 | XWINDOW (tem)->next = replacement; |
800 | ||
801 | p->parent = tem = o->parent; | |
265a9e55 | 802 | if (!NILP (tem)) |
7ab12479 JB |
803 | { |
804 | if (EQ (XWINDOW (tem)->vchild, old)) | |
805 | XWINDOW (tem)->vchild = replacement; | |
806 | if (EQ (XWINDOW (tem)->hchild, old)) | |
807 | XWINDOW (tem)->hchild = replacement; | |
808 | } | |
809 | ||
810 | /*** Here, if replacement is a vertical combination | |
811 | and so is its new parent, we should make replacement's | |
812 | children be children of that parent instead. ***/ | |
813 | } | |
814 | ||
815 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
816 | "Remove WINDOW from the display. Default is selected window.") | |
817 | (window) | |
818 | register Lisp_Object window; | |
543f5fb1 RS |
819 | { |
820 | delete_window (window); | |
821 | ||
822 | if (! NILP (Vwindow_configuration_change_hook) | |
823 | && ! NILP (Vrun_hooks)) | |
824 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
825 | ||
826 | return Qnil; | |
827 | } | |
828 | ||
5e14b1fc | 829 | void |
543f5fb1 RS |
830 | delete_window (window) |
831 | register Lisp_Object window; | |
7ab12479 JB |
832 | { |
833 | register Lisp_Object tem, parent, sib; | |
834 | register struct window *p; | |
835 | register struct window *par; | |
836 | ||
605be8af JB |
837 | /* Because this function is called by other C code on non-leaf |
838 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
839 | so we can't decode_window here. */ | |
265a9e55 | 840 | if (NILP (window)) |
7ab12479 JB |
841 | window = selected_window; |
842 | else | |
843 | CHECK_WINDOW (window, 0); | |
7ab12479 | 844 | p = XWINDOW (window); |
605be8af JB |
845 | |
846 | /* It's okay to delete an already-deleted window. */ | |
847 | if (NILP (p->buffer) | |
848 | && NILP (p->hchild) | |
849 | && NILP (p->vchild)) | |
296b535c | 850 | return; |
605be8af | 851 | |
7ab12479 | 852 | parent = p->parent; |
265a9e55 | 853 | if (NILP (parent)) |
7ab12479 JB |
854 | error ("Attempt to delete minibuffer or sole ordinary window"); |
855 | par = XWINDOW (parent); | |
856 | ||
857 | windows_or_buffers_changed++; | |
29aeee73 | 858 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; |
7ab12479 | 859 | |
605be8af JB |
860 | /* Are we trying to delete any frame's selected window? */ |
861 | { | |
0def0403 | 862 | Lisp_Object frame, pwindow; |
605be8af | 863 | |
0def0403 RS |
864 | /* See if the frame's selected window is either WINDOW |
865 | or any subwindow of it, by finding all that window's parents | |
866 | and comparing each one with WINDOW. */ | |
867 | frame = WINDOW_FRAME (XWINDOW (window)); | |
868 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
869 | ||
870 | while (!NILP (pwindow)) | |
871 | { | |
872 | if (EQ (window, pwindow)) | |
873 | break; | |
874 | pwindow = XWINDOW (pwindow)->parent; | |
875 | } | |
876 | ||
877 | if (EQ (window, pwindow)) | |
605be8af | 878 | { |
89bca612 RS |
879 | Lisp_Object alternative; |
880 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
881 | |
882 | /* If we're about to delete the selected window on the | |
883 | selected frame, then we should use Fselect_window to select | |
884 | the new window. On the other hand, if we're about to | |
885 | delete the selected window on any other frame, we shouldn't do | |
886 | anything but set the frame's selected_window slot. */ | |
887 | if (EQ (window, selected_window)) | |
888 | Fselect_window (alternative); | |
889 | else | |
0def0403 | 890 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
891 | } |
892 | } | |
7ab12479 JB |
893 | |
894 | tem = p->buffer; | |
895 | /* tem is null for dummy parent windows | |
896 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 897 | if (!NILP (tem)) |
7ab12479 JB |
898 | { |
899 | unshow_buffer (p); | |
900 | unchain_marker (p->pointm); | |
901 | unchain_marker (p->start); | |
7ab12479 JB |
902 | } |
903 | ||
904 | tem = p->next; | |
265a9e55 | 905 | if (!NILP (tem)) |
7ab12479 JB |
906 | XWINDOW (tem)->prev = p->prev; |
907 | ||
908 | tem = p->prev; | |
265a9e55 | 909 | if (!NILP (tem)) |
7ab12479 JB |
910 | XWINDOW (tem)->next = p->next; |
911 | ||
912 | if (EQ (window, par->hchild)) | |
913 | par->hchild = p->next; | |
914 | if (EQ (window, par->vchild)) | |
915 | par->vchild = p->next; | |
916 | ||
917 | /* Find one of our siblings to give our space to. */ | |
918 | sib = p->prev; | |
265a9e55 | 919 | if (NILP (sib)) |
7ab12479 JB |
920 | { |
921 | /* If p gives its space to its next sibling, that sibling needs | |
922 | to have its top/left side pulled back to where p's is. | |
923 | set_window_{height,width} will re-position the sibling's | |
924 | children. */ | |
925 | sib = p->next; | |
7f4161e0 JB |
926 | XWINDOW (sib)->top = p->top; |
927 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
928 | } |
929 | ||
930 | /* Stretch that sibling. */ | |
265a9e55 | 931 | if (!NILP (par->vchild)) |
7ab12479 JB |
932 | set_window_height (sib, |
933 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
934 | 1); | |
265a9e55 | 935 | if (!NILP (par->hchild)) |
7ab12479 JB |
936 | set_window_width (sib, |
937 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
938 | 1); | |
939 | ||
940 | /* If parent now has only one child, | |
941 | put the child into the parent's place. */ | |
7ab12479 | 942 | tem = par->hchild; |
265a9e55 | 943 | if (NILP (tem)) |
7ab12479 | 944 | tem = par->vchild; |
265a9e55 | 945 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 946 | replace_window (parent, tem); |
605be8af JB |
947 | |
948 | /* Since we may be deleting combination windows, we must make sure that | |
949 | not only p but all its children have been marked as deleted. */ | |
950 | if (! NILP (p->hchild)) | |
951 | delete_all_subwindows (XWINDOW (p->hchild)); | |
952 | else if (! NILP (p->vchild)) | |
953 | delete_all_subwindows (XWINDOW (p->vchild)); | |
954 | ||
955 | /* Mark this window as deleted. */ | |
956 | p->buffer = p->hchild = p->vchild = Qnil; | |
7ab12479 JB |
957 | } |
958 | \f | |
7ab12479 | 959 | |
44fa5b1e | 960 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 961 | |
26f6279d JB |
962 | /* This comment supplies the doc string for `next-window', |
963 | for make-docfile to see. We cannot put this in the real DEFUN | |
964 | due to limits in the Unix cpp. | |
965 | ||
966 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 967 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
968 | If omitted, WINDOW defaults to the selected window.\n\ |
969 | \n\ | |
970 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
971 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
972 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
973 | minibuffer even if it is active.\n\ | |
974 | \n\ | |
44fa5b1e JB |
975 | Several frames may share a single minibuffer; if the minibuffer\n\ |
976 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 977 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
978 | set of windows even when the minibuffer is on another frame. If the\n\ |
979 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 980 | \n\ |
44fa5b1e JB |
981 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
982 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 983 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 984 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 985 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 986 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
987 | \n\ |
988 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
989 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
990 | windows, eventually ending up back at the window you started with.\n\ | |
991 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
992 | (window, minibuf, all_frames) */ |
993 | ||
994 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
995 | 0) | |
44fa5b1e JB |
996 | (window, minibuf, all_frames) |
997 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
998 | { |
999 | register Lisp_Object tem; | |
d5783c40 | 1000 | Lisp_Object start_window; |
7ab12479 | 1001 | |
265a9e55 | 1002 | if (NILP (window)) |
7ab12479 JB |
1003 | window = selected_window; |
1004 | else | |
605be8af | 1005 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1006 | |
d5783c40 JB |
1007 | start_window = window; |
1008 | ||
1009 | /* minibuf == nil may or may not include minibuffers. | |
1010 | Decide if it does. */ | |
265a9e55 | 1011 | if (NILP (minibuf)) |
fbdc1545 RS |
1012 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1013 | else if (! EQ (minibuf, Qt)) | |
1014 | minibuf = Qlambda; | |
1015 | /* Now minibuf can be t => count all minibuffer windows, | |
1016 | lambda => count none of them, | |
1017 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1018 | |
1bb80f72 | 1019 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e | 1020 | if (NILP (all_frames)) |
fbdc1545 | 1021 | all_frames = (! EQ (minibuf, Qlambda) |
1bb80f72 RS |
1022 | ? (FRAME_MINIBUF_WINDOW |
1023 | (XFRAME | |
1024 | (WINDOW_FRAME | |
1025 | (XWINDOW (window))))) | |
1026 | : Qnil); | |
89bca612 RS |
1027 | else if (EQ (all_frames, Qvisible)) |
1028 | ; | |
f812f9c6 RS |
1029 | else if (XFASTINT (all_frames) == 0) |
1030 | ; | |
1f4c5d09 RS |
1031 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1032 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1033 | return the first window on the frame. */ | |
1034 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1035 | else if (! EQ (all_frames, Qt)) |
1036 | all_frames = Qnil; | |
644b477c RS |
1037 | /* Now all_frames is t meaning search all frames, |
1038 | nil meaning search just current frame, | |
f812f9c6 RS |
1039 | visible meaning search just visible frames, |
1040 | 0 meaning search visible and iconified frames, | |
644b477c | 1041 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1042 | |
1043 | /* Do this loop at least once, to get the next window, and perhaps | |
1044 | again, if we hit the minibuffer and that is not acceptable. */ | |
1045 | do | |
1046 | { | |
1047 | /* Find a window that actually has a next one. This loop | |
1048 | climbs up the tree. */ | |
265a9e55 JB |
1049 | while (tem = XWINDOW (window)->next, NILP (tem)) |
1050 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1051 | window = tem; |
d5783c40 | 1052 | else |
7ab12479 | 1053 | { |
44fa5b1e JB |
1054 | /* We've reached the end of this frame. |
1055 | Which other frames are acceptable? */ | |
1056 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1057 | if (! NILP (all_frames)) |
1bb80f72 RS |
1058 | { |
1059 | Lisp_Object tem1; | |
1060 | ||
1061 | tem1 = tem; | |
1062 | tem = next_frame (tem, all_frames); | |
1063 | /* In the case where the minibuffer is active, | |
1064 | and we include its frame as well as the selected one, | |
1065 | next_frame may get stuck in that frame. | |
1066 | If that happens, go back to the selected frame | |
1067 | so we can complete the cycle. */ | |
1068 | if (EQ (tem, tem1)) | |
74112613 | 1069 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1070 | } |
44fa5b1e | 1071 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1072 | |
7ab12479 JB |
1073 | break; |
1074 | } | |
1075 | ||
1076 | window = tem; | |
d5783c40 | 1077 | |
7ab12479 JB |
1078 | /* If we're in a combination window, find its first child and |
1079 | recurse on that. Otherwise, we've found the window we want. */ | |
1080 | while (1) | |
1081 | { | |
265a9e55 | 1082 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1083 | window = XWINDOW (window)->hchild; |
265a9e55 | 1084 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1085 | window = XWINDOW (window)->vchild; |
1086 | else break; | |
1087 | } | |
1088 | } | |
5c4d25a6 | 1089 | /* Which windows are acceptable? |
d5783c40 | 1090 | Exit the loop and accept this window if |
fbdc1545 RS |
1091 | this isn't a minibuffer window, |
1092 | or we're accepting all minibuffer windows, | |
1093 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1094 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1095 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1096 | && ! EQ (minibuf, Qt) |
fbdc1545 | 1097 | && ! EQ (minibuf, window) |
7f4161e0 | 1098 | && ! EQ (window, start_window)); |
7ab12479 JB |
1099 | |
1100 | return window; | |
1101 | } | |
1102 | ||
26f6279d JB |
1103 | /* This comment supplies the doc string for `previous-window', |
1104 | for make-docfile to see. We cannot put this in the real DEFUN | |
1105 | due to limits in the Unix cpp. | |
1106 | ||
1107 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1108 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1109 | If omitted, WINDOW defaults to the selected window.\n\ |
1110 | \n\ | |
1111 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1112 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1113 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1114 | minibuffer even if it is active.\n\ | |
1115 | \n\ | |
44fa5b1e JB |
1116 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1117 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1118 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1119 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1120 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1121 | \n\ |
44fa5b1e JB |
1122 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1123 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1124 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1125 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1126 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1127 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1128 | \n\ |
1129 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1130 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1131 | windows, eventually ending up back at the window you started with.\n\ | |
1132 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1133 | (window, minibuf, all_frames) */ |
1134 | ||
1135 | ||
1136 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1137 | 0) | |
44fa5b1e JB |
1138 | (window, minibuf, all_frames) |
1139 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1140 | { |
1141 | register Lisp_Object tem; | |
d5783c40 | 1142 | Lisp_Object start_window; |
7ab12479 | 1143 | |
265a9e55 | 1144 | if (NILP (window)) |
7ab12479 JB |
1145 | window = selected_window; |
1146 | else | |
605be8af | 1147 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1148 | |
d5783c40 JB |
1149 | start_window = window; |
1150 | ||
1151 | /* minibuf == nil may or may not include minibuffers. | |
1152 | Decide if it does. */ | |
265a9e55 | 1153 | if (NILP (minibuf)) |
fbdc1545 RS |
1154 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1155 | else if (! EQ (minibuf, Qt)) | |
1156 | minibuf = Qlambda; | |
1157 | /* Now minibuf can be t => count all minibuffer windows, | |
1158 | lambda => count none of them, | |
1159 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1160 | |
44fa5b1e JB |
1161 | /* all_frames == nil doesn't specify which frames to include. |
1162 | Decide which frames it includes. */ | |
1163 | if (NILP (all_frames)) | |
fbdc1545 | 1164 | all_frames = (! EQ (minibuf, Qlambda) |
44fa5b1e JB |
1165 | ? (FRAME_MINIBUF_WINDOW |
1166 | (XFRAME | |
1167 | (WINDOW_FRAME | |
d5783c40 JB |
1168 | (XWINDOW (window))))) |
1169 | : Qnil); | |
89bca612 RS |
1170 | else if (EQ (all_frames, Qvisible)) |
1171 | ; | |
f812f9c6 RS |
1172 | else if (XFASTINT (all_frames) == 0) |
1173 | ; | |
1f4c5d09 RS |
1174 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1175 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1176 | return the first window on the frame. */ | |
1177 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1178 | else if (! EQ (all_frames, Qt)) |
1179 | all_frames = Qnil; | |
644b477c RS |
1180 | /* Now all_frames is t meaning search all frames, |
1181 | nil meaning search just current frame, | |
f812f9c6 RS |
1182 | visible meaning search just visible frames, |
1183 | 0 meaning search visible and iconified frames, | |
644b477c | 1184 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1185 | |
1186 | /* Do this loop at least once, to get the previous window, and perhaps | |
1187 | again, if we hit the minibuffer and that is not acceptable. */ | |
1188 | do | |
1189 | { | |
1190 | /* Find a window that actually has a previous one. This loop | |
1191 | climbs up the tree. */ | |
265a9e55 JB |
1192 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1193 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1194 | window = tem; |
d5783c40 | 1195 | else |
7ab12479 | 1196 | { |
44fa5b1e JB |
1197 | /* We have found the top window on the frame. |
1198 | Which frames are acceptable? */ | |
1199 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1200 | if (! NILP (all_frames)) |
dbc4e1c1 JB |
1201 | /* It's actually important that we use prev_frame here, |
1202 | rather than next_frame. All the windows acceptable | |
1203 | according to the given parameters should form a ring; | |
1204 | Fnext_window and Fprevious_window should go back and | |
1205 | forth around the ring. If we use next_frame here, | |
1206 | then Fnext_window and Fprevious_window take different | |
1207 | paths through the set of acceptable windows. | |
1208 | window_loop assumes that these `ring' requirement are | |
1209 | met. */ | |
1bb80f72 RS |
1210 | { |
1211 | Lisp_Object tem1; | |
1212 | ||
1213 | tem1 = tem; | |
1214 | tem = prev_frame (tem, all_frames); | |
1215 | /* In the case where the minibuffer is active, | |
1216 | and we include its frame as well as the selected one, | |
1217 | next_frame may get stuck in that frame. | |
1218 | If that happens, go back to the selected frame | |
1219 | so we can complete the cycle. */ | |
1220 | if (EQ (tem, tem1)) | |
74112613 | 1221 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1222 | } |
644b477c RS |
1223 | /* If this frame has a minibuffer, find that window first, |
1224 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1225 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1226 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1227 | else | |
644b477c | 1228 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1229 | |
7ab12479 JB |
1230 | break; |
1231 | } | |
1232 | ||
1233 | window = tem; | |
1234 | /* If we're in a combination window, find its last child and | |
1235 | recurse on that. Otherwise, we've found the window we want. */ | |
1236 | while (1) | |
1237 | { | |
265a9e55 | 1238 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1239 | window = XWINDOW (window)->hchild; |
265a9e55 | 1240 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1241 | window = XWINDOW (window)->vchild; |
1242 | else break; | |
265a9e55 | 1243 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1244 | window = tem; |
1245 | } | |
1246 | } | |
5c4d25a6 | 1247 | /* Which windows are acceptable? |
d5783c40 | 1248 | Exit the loop and accept this window if |
fbdc1545 RS |
1249 | this isn't a minibuffer window, |
1250 | or we're accepting all minibuffer windows, | |
1251 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1252 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1253 | while (MINI_WINDOW_P (XWINDOW (window)) |
fbdc1545 RS |
1254 | && ! EQ (minibuf, Qt) |
1255 | && ! EQ (minibuf, window) | |
1256 | && ! EQ (window, start_window)); | |
7ab12479 JB |
1257 | |
1258 | return window; | |
1259 | } | |
1260 | ||
62c07cc7 | 1261 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1262 | "Select the ARG'th different window on this frame.\n\ |
1263 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1264 | This command selects the window ARG steps away in that order.\n\ |
1265 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1266 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 EN |
1267 | (arg, all_frames) |
1268 | register Lisp_Object arg, all_frames; | |
7ab12479 JB |
1269 | { |
1270 | register int i; | |
1271 | register Lisp_Object w; | |
1272 | ||
413430c5 | 1273 | CHECK_NUMBER (arg, 0); |
7ab12479 | 1274 | w = selected_window; |
413430c5 | 1275 | i = XINT (arg); |
7ab12479 JB |
1276 | |
1277 | while (i > 0) | |
1278 | { | |
44fa5b1e | 1279 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1280 | i--; |
1281 | } | |
1282 | while (i < 0) | |
1283 | { | |
44fa5b1e | 1284 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1285 | i++; |
1286 | } | |
1287 | Fselect_window (w); | |
1288 | return Qnil; | |
1289 | } | |
1290 | \f | |
1291 | /* Look at all windows, performing an operation specified by TYPE | |
1292 | with argument OBJ. | |
75d8f668 | 1293 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1294 | Qnil, look at just the selected frame; |
89bca612 | 1295 | Qvisible, look at visible frames; |
75d8f668 | 1296 | a frame, just look at windows on that frame. |
7ab12479 JB |
1297 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1298 | */ | |
1299 | ||
1300 | enum window_loop | |
1301 | { | |
1302 | WINDOW_LOOP_UNUSED, | |
1303 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1304 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1305 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1306 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1307 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1308 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1309 | }; |
1310 | ||
1311 | static Lisp_Object | |
44fa5b1e | 1312 | window_loop (type, obj, mini, frames) |
7ab12479 | 1313 | enum window_loop type; |
44fa5b1e | 1314 | register Lisp_Object obj, frames; |
7ab12479 JB |
1315 | int mini; |
1316 | { | |
1317 | register Lisp_Object w; | |
1318 | register Lisp_Object best_window; | |
1319 | register Lisp_Object next_window; | |
4b206065 | 1320 | register Lisp_Object last_window; |
44fa5b1e | 1321 | FRAME_PTR frame; |
89bca612 RS |
1322 | Lisp_Object frame_arg; |
1323 | frame_arg = Qt; | |
44fa5b1e JB |
1324 | |
1325 | /* If we're only looping through windows on a particular frame, | |
1326 | frame points to that frame. If we're looping through windows | |
1327 | on all frames, frame is 0. */ | |
1328 | if (FRAMEP (frames)) | |
1329 | frame = XFRAME (frames); | |
1330 | else if (NILP (frames)) | |
1331 | frame = selected_frame; | |
7ab12479 | 1332 | else |
44fa5b1e | 1333 | frame = 0; |
89bca612 RS |
1334 | if (frame) |
1335 | frame_arg = Qlambda; | |
f812f9c6 RS |
1336 | else if (XFASTINT (frames) == 0) |
1337 | frame_arg = frames; | |
89bca612 RS |
1338 | else if (EQ (frames, Qvisible)) |
1339 | frame_arg = frames; | |
7ab12479 | 1340 | |
89bca612 RS |
1341 | /* frame_arg is Qlambda to stick to one frame, |
1342 | Qvisible to consider all visible frames, | |
1343 | or Qt otherwise. */ | |
1344 | ||
7ab12479 | 1345 | /* Pick a window to start with. */ |
017b2bad | 1346 | if (WINDOWP (obj)) |
4b206065 | 1347 | w = obj; |
44fa5b1e | 1348 | else if (frame) |
4b206065 | 1349 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1350 | else |
4b206065 JB |
1351 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1352 | ||
1353 | /* Figure out the last window we're going to mess with. Since | |
1354 | Fnext_window, given the same options, is guaranteed to go in a | |
1355 | ring, we can just use Fprevious_window to find the last one. | |
1356 | ||
1357 | We can't just wait until we hit the first window again, because | |
1358 | it might be deleted. */ | |
1359 | ||
89bca612 | 1360 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1361 | |
7ab12479 | 1362 | best_window = Qnil; |
4b206065 | 1363 | for (;;) |
7ab12479 | 1364 | { |
75d8f668 JB |
1365 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1366 | ||
7ab12479 JB |
1367 | /* Pick the next window now, since some operations will delete |
1368 | the current window. */ | |
89bca612 | 1369 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1370 | |
d29a5631 RS |
1371 | /* Note that we do not pay attention here to whether |
1372 | the frame is visible, since Fnext_window skips non-visible frames | |
1373 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1374 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1375 | || (mini && minibuf_level > 0)) |
1376 | switch (type) | |
1377 | { | |
1378 | case GET_BUFFER_WINDOW: | |
5c204627 RS |
1379 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj) |
1380 | /* Don't find any minibuffer window | |
1381 | except the one that is currently in use. */ | |
1382 | && (MINI_WINDOW_P (XWINDOW (w)) | |
1383 | ? EQ (w, minibuf_window) : 1)) | |
7ab12479 JB |
1384 | return w; |
1385 | break; | |
1386 | ||
1387 | case GET_LRU_WINDOW: | |
1388 | /* t as arg means consider only full-width windows */ | |
111e5992 | 1389 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w))) |
7ab12479 | 1390 | break; |
7ab12479 JB |
1391 | /* Ignore dedicated windows and minibuffers. */ |
1392 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1393 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1394 | break; |
265a9e55 | 1395 | if (NILP (best_window) |
7ab12479 JB |
1396 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1397 | > XFASTINT (XWINDOW (w)->use_time))) | |
1398 | best_window = w; | |
1399 | break; | |
1400 | ||
1401 | case DELETE_OTHER_WINDOWS: | |
1402 | if (XWINDOW (w) != XWINDOW (obj)) | |
1403 | Fdelete_window (w); | |
1404 | break; | |
1405 | ||
1406 | case DELETE_BUFFER_WINDOWS: | |
1407 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1408 | { | |
3548e138 RS |
1409 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1410 | ||
1411 | /* If this window is dedicated, and in a frame of its own, | |
1412 | kill the frame. */ | |
1413 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1414 | && !NILP (XWINDOW (w)->dedicated) | |
1415 | && other_visible_frames (f)) | |
7ab12479 | 1416 | { |
3548e138 RS |
1417 | /* Skip the other windows on this frame. |
1418 | There might be one, the minibuffer! */ | |
1419 | if (! EQ (w, last_window)) | |
1420 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1421 | { | |
1422 | /* As we go, check for the end of the loop. | |
1423 | We mustn't start going around a second time. */ | |
1424 | if (EQ (next_window, last_window)) | |
1425 | { | |
1426 | last_window = w; | |
1427 | break; | |
1428 | } | |
1429 | next_window = Fnext_window (next_window, | |
1430 | mini ? Qt : Qnil, | |
1431 | frame_arg); | |
1432 | } | |
1433 | /* Now we can safely delete the frame. */ | |
1434 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1435 | } |
1436 | else | |
3548e138 RS |
1437 | /* If we're deleting the buffer displayed in the only window |
1438 | on the frame, find a new buffer to display there. */ | |
1439 | if (NILP (XWINDOW (w)->parent)) | |
1440 | { | |
1441 | Lisp_Object new_buffer; | |
1442 | new_buffer = Fother_buffer (obj, Qnil); | |
1443 | if (NILP (new_buffer)) | |
1444 | new_buffer | |
1445 | = Fget_buffer_create (build_string ("*scratch*")); | |
1446 | Fset_window_buffer (w, new_buffer); | |
1447 | if (EQ (w, selected_window)) | |
1448 | Fset_buffer (XWINDOW (w)->buffer); | |
1449 | } | |
1450 | else | |
1451 | Fdelete_window (w); | |
7ab12479 JB |
1452 | } |
1453 | break; | |
1454 | ||
1455 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1456 | /* Ignore dedicated windows and minibuffers. */ |
1457 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1458 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1459 | break; |
1460 | { | |
1461 | struct window *best_window_ptr = XWINDOW (best_window); | |
1462 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1463 | if (NILP (best_window) |
1464 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1465 | > (XFASTINT (best_window_ptr->height) | |
1466 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1467 | best_window = w; |
1468 | } | |
1469 | break; | |
1470 | ||
1471 | case UNSHOW_BUFFER: | |
1472 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1473 | { | |
1474 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1475 | Lisp_Object another_buffer; |
38ab08d1 | 1476 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1477 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1478 | if (NILP (another_buffer)) |
7ab12479 JB |
1479 | another_buffer |
1480 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1481 | /* If this window is dedicated, and in a frame of its own, |
1482 | kill the frame. */ | |
1483 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1484 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1485 | && other_visible_frames (f)) |
45945a7b RS |
1486 | { |
1487 | /* Skip the other windows on this frame. | |
1488 | There might be one, the minibuffer! */ | |
1489 | if (! EQ (w, last_window)) | |
1490 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1491 | { | |
1492 | /* As we go, check for the end of the loop. | |
1493 | We mustn't start going around a second time. */ | |
1494 | if (EQ (next_window, last_window)) | |
1495 | { | |
1496 | last_window = w; | |
1497 | break; | |
1498 | } | |
1499 | next_window = Fnext_window (next_window, | |
1500 | mini ? Qt : Qnil, | |
1501 | frame_arg); | |
1502 | } | |
1503 | /* Now we can safely delete the frame. */ | |
1504 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1505 | } | |
38ab08d1 | 1506 | else |
38ab08d1 RS |
1507 | { |
1508 | /* Otherwise show a different buffer in the window. */ | |
1509 | XWINDOW (w)->dedicated = Qnil; | |
1510 | Fset_window_buffer (w, another_buffer); | |
1511 | if (EQ (w, selected_window)) | |
1512 | Fset_buffer (XWINDOW (w)->buffer); | |
1513 | } | |
7ab12479 JB |
1514 | } |
1515 | break; | |
1516 | } | |
4b206065 JB |
1517 | |
1518 | if (EQ (w, last_window)) | |
1519 | break; | |
1520 | ||
7ab12479 JB |
1521 | w = next_window; |
1522 | } | |
7ab12479 JB |
1523 | |
1524 | return best_window; | |
37962e60 | 1525 | } |
605be8af | 1526 | |
7ab12479 JB |
1527 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1528 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1529 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1530 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1531 | If FRAME is t, search all frames.\n\ |
1532 | If FRAME is nil, search only the selected frame.\n\ | |
1533 | If FRAME is a frame, search only that frame.") | |
1534 | (frame) | |
1535 | Lisp_Object frame; | |
7ab12479 JB |
1536 | { |
1537 | register Lisp_Object w; | |
1538 | /* First try for a window that is full-width */ | |
89bca612 | 1539 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1540 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1541 | return w; |
1542 | /* If none of them, try the rest */ | |
89bca612 | 1543 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1544 | } |
1545 | ||
1546 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1547 | "Return the largest window in area.\n\ | |
89bca612 | 1548 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1549 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1550 | If FRAME is t, search all frames.\n\ |
1551 | If FRAME is nil, search only the selected frame.\n\ | |
1552 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1553 | (frame) |
1554 | Lisp_Object frame; | |
7ab12479 JB |
1555 | { |
1556 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1557 | frame); |
7ab12479 JB |
1558 | } |
1559 | ||
1560 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1561 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1562 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1563 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1564 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1565 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1566 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1567 | (buffer, frame) |
1568 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1569 | { |
1570 | buffer = Fget_buffer (buffer); | |
017b2bad | 1571 | if (BUFFERP (buffer)) |
44fa5b1e | 1572 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1573 | else |
1574 | return Qnil; | |
1575 | } | |
1576 | ||
1577 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1578 | 0, 1, "", | |
44fa5b1e | 1579 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1580 | Only the frame WINDOW is on is affected.\n\ |
1581 | This function tries to reduce display jumps\n\ | |
1582 | by keeping the text previously visible in WINDOW\n\ | |
1583 | in the same place on the frame. Doing this depends on\n\ | |
1584 | the value of (window-start WINDOW), so if calling this function\n\ | |
1585 | in a program gives strange scrolling, make sure the window-start\n\ | |
1586 | value is reasonable when this function is called.") | |
7ab12479 JB |
1587 | (window) |
1588 | Lisp_Object window; | |
1589 | { | |
1590 | struct window *w; | |
00d3d838 | 1591 | int startpos; |
7ab12479 JB |
1592 | int top; |
1593 | ||
265a9e55 | 1594 | if (NILP (window)) |
7ab12479 JB |
1595 | window = selected_window; |
1596 | else | |
605be8af | 1597 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1598 | |
1599 | w = XWINDOW (window); | |
a2b38b3c | 1600 | |
00d3d838 KH |
1601 | startpos = marker_position (w->start); |
1602 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1603 | |
a2b38b3c RS |
1604 | if (MINI_WINDOW_P (w) && top > 0) |
1605 | error ("Can't expand minibuffer to full frame"); | |
1606 | ||
70728a80 | 1607 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1608 | |
00d3d838 KH |
1609 | /* Try to minimize scrolling, by setting the window start to the point |
1610 | will cause the text at the old window start to be at the same place | |
1611 | on the frame. But don't try to do this if the window start is | |
1612 | outside the visible portion (as might happen when the display is | |
1613 | not current, due to typeahead). */ | |
1614 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1615 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1616 | { | |
1617 | struct position pos; | |
1618 | struct buffer *obuf = current_buffer; | |
1619 | ||
1620 | Fset_buffer (w->buffer); | |
1621 | /* This computation used to temporarily move point, but that can | |
1622 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1623 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 1624 | |
b73ea88e RS |
1625 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
1626 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
1627 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 1628 | : Qnil); |
80622eec RS |
1629 | /* We need to do this, so that the window-scroll-functions |
1630 | get called. */ | |
4d047f50 | 1631 | w->optional_new_start = Qt; |
00d3d838 KH |
1632 | |
1633 | set_buffer_internal (obuf); | |
1634 | } | |
7ab12479 JB |
1635 | return Qnil; |
1636 | } | |
1637 | ||
1638 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1639 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1640 | "Delete all windows showing BUFFER.\n\ |
1641 | Optional second argument FRAME controls which frames are affected.\n\ | |
1642 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1643 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1644 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1645 | If a frame, delete only windows showing BUFFER in that frame.") |
1646 | (buffer, frame) | |
1647 | Lisp_Object buffer, frame; | |
7ab12479 | 1648 | { |
26f6279d JB |
1649 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1650 | expects. */ | |
1651 | if (! FRAMEP (frame)) | |
1652 | frame = NILP (frame) ? Qt : Qnil; | |
26f6279d | 1653 | |
265a9e55 | 1654 | if (!NILP (buffer)) |
7ab12479 JB |
1655 | { |
1656 | buffer = Fget_buffer (buffer); | |
1657 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1658 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1659 | } |
1660 | return Qnil; | |
1661 | } | |
1662 | ||
1663 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1664 | Sreplace_buffer_in_windows, | |
1665 | 1, 1, "bReplace buffer in windows: ", | |
1666 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1667 | (buffer) | |
1668 | Lisp_Object buffer; | |
1669 | { | |
265a9e55 | 1670 | if (!NILP (buffer)) |
7ab12479 JB |
1671 | { |
1672 | buffer = Fget_buffer (buffer); | |
1673 | CHECK_BUFFER (buffer, 0); | |
1674 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1675 | } | |
1676 | return Qnil; | |
1677 | } | |
ff58478b RS |
1678 | |
1679 | /* Replace BUFFER with some other buffer in all windows | |
1680 | of all frames, even those on other keyboards. */ | |
1681 | ||
1682 | void | |
1683 | replace_buffer_in_all_windows (buffer) | |
1684 | Lisp_Object buffer; | |
1685 | { | |
27abb84f | 1686 | #ifdef MULTI_KBOARD |
ff58478b RS |
1687 | Lisp_Object tail, frame; |
1688 | ||
ff58478b RS |
1689 | /* A single call to window_loop won't do the job |
1690 | because it only considers frames on the current keyboard. | |
1691 | So loop manually over frames, and handle each one. */ | |
1692 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 1693 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 1694 | #else |
db7f721d | 1695 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
1696 | #endif |
1697 | } | |
7ab12479 JB |
1698 | \f |
1699 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1700 | |
1701 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1702 | might crash Emacs. */ | |
1703 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1704 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1705 | ||
1706 | /* Make sure that window_min_height and window_min_width are | |
1707 | not too small; if they are, set them to safe minima. */ | |
1708 | ||
1709 | static void | |
1710 | check_min_window_sizes () | |
1711 | { | |
1712 | /* Smaller values might permit a crash. */ | |
1713 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1714 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1715 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1716 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1717 | } | |
1718 | ||
1719 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1720 | minimum allowable size. */ | |
605be8af | 1721 | void |
a481b3ea | 1722 | check_frame_size (frame, rows, cols) |
605be8af JB |
1723 | FRAME_PTR frame; |
1724 | int *rows, *cols; | |
a481b3ea | 1725 | { |
628df3bf | 1726 | /* For height, we have to see: |
37962e60 | 1727 | whether the frame has a minibuffer, |
628df3bf JB |
1728 | whether it wants a mode line, and |
1729 | whether it has a menu bar. */ | |
a481b3ea | 1730 | int min_height = |
79f92720 JB |
1731 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1732 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1733 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1734 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1735 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1736 | |
1737 | if (*rows < min_height) | |
1738 | *rows = min_height; | |
1739 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1740 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1741 | } | |
1742 | ||
7ab12479 JB |
1743 | /* Normally the window is deleted if it gets too small. |
1744 | nodelete nonzero means do not do this. | |
1745 | (The caller should check later and do so if appropriate) */ | |
1746 | ||
5e14b1fc | 1747 | void |
7ab12479 JB |
1748 | set_window_height (window, height, nodelete) |
1749 | Lisp_Object window; | |
1750 | int height; | |
1751 | int nodelete; | |
1752 | { | |
1753 | register struct window *w = XWINDOW (window); | |
1754 | register struct window *c; | |
1755 | int oheight = XFASTINT (w->height); | |
1756 | int top, pos, lastbot, opos, lastobot; | |
1757 | Lisp_Object child; | |
1758 | ||
a481b3ea JB |
1759 | check_min_window_sizes (); |
1760 | ||
7ab12479 | 1761 | if (!nodelete |
265a9e55 | 1762 | && ! NILP (w->parent) |
c6b530ed RS |
1763 | && (MINI_WINDOW_P (w) |
1764 | ? height < 1 | |
1765 | : height < window_min_height)) | |
7ab12479 | 1766 | { |
543f5fb1 | 1767 | delete_window (window); |
7ab12479 JB |
1768 | return; |
1769 | } | |
1770 | ||
d834a2e9 | 1771 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1772 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1773 | windows_or_buffers_changed++; |
29aeee73 RS |
1774 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1775 | ||
d834a2e9 | 1776 | XSETFASTINT (w->height, height); |
265a9e55 | 1777 | if (!NILP (w->hchild)) |
7ab12479 | 1778 | { |
265a9e55 | 1779 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1780 | { |
1781 | XWINDOW (child)->top = w->top; | |
1782 | set_window_height (child, height, nodelete); | |
1783 | } | |
1784 | } | |
265a9e55 | 1785 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1786 | { |
1787 | lastbot = top = XFASTINT (w->top); | |
1788 | lastobot = 0; | |
265a9e55 | 1789 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1790 | { |
1791 | c = XWINDOW (child); | |
1792 | ||
1793 | opos = lastobot + XFASTINT (c->height); | |
1794 | ||
d834a2e9 | 1795 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1796 | |
1797 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1798 | ||
1799 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1800 | set_window_height (child, pos + top - lastbot, 1); | |
1801 | ||
1802 | /* Now advance child to next window, | |
1803 | and set lastbot if child was not just deleted. */ | |
1804 | lastbot = pos + top; | |
1805 | lastobot = opos; | |
1806 | } | |
1807 | /* Now delete any children that became too small. */ | |
1808 | if (!nodelete) | |
265a9e55 | 1809 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1810 | { |
1811 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1812 | } | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | /* Recursively set width of WINDOW and its inferiors. */ | |
1817 | ||
5e14b1fc | 1818 | void |
7ab12479 JB |
1819 | set_window_width (window, width, nodelete) |
1820 | Lisp_Object window; | |
1821 | int width; | |
1822 | int nodelete; | |
1823 | { | |
1824 | register struct window *w = XWINDOW (window); | |
1825 | register struct window *c; | |
1826 | int owidth = XFASTINT (w->width); | |
1827 | int left, pos, lastright, opos, lastoright; | |
1828 | Lisp_Object child; | |
1829 | ||
abdced83 | 1830 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 | 1831 | { |
543f5fb1 | 1832 | delete_window (window); |
7ab12479 JB |
1833 | return; |
1834 | } | |
1835 | ||
d834a2e9 | 1836 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1837 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1838 | windows_or_buffers_changed++; |
29aeee73 RS |
1839 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1840 | ||
d834a2e9 | 1841 | XSETFASTINT (w->width, width); |
265a9e55 | 1842 | if (!NILP (w->vchild)) |
7ab12479 | 1843 | { |
265a9e55 | 1844 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1845 | { |
1846 | XWINDOW (child)->left = w->left; | |
1847 | set_window_width (child, width, nodelete); | |
1848 | } | |
1849 | } | |
265a9e55 | 1850 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1851 | { |
1852 | lastright = left = XFASTINT (w->left); | |
1853 | lastoright = 0; | |
265a9e55 | 1854 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1855 | { |
1856 | c = XWINDOW (child); | |
1857 | ||
1858 | opos = lastoright + XFASTINT (c->width); | |
1859 | ||
d834a2e9 | 1860 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1861 | |
1862 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1863 | ||
1864 | /* Inhibit deletion for becoming too small */ | |
1865 | set_window_width (child, pos + left - lastright, 1); | |
1866 | ||
1867 | /* Now advance child to next window, | |
1868 | and set lastright if child was not just deleted. */ | |
1869 | lastright = pos + left, lastoright = opos; | |
1870 | } | |
1871 | /* Delete children that became too small */ | |
1872 | if (!nodelete) | |
265a9e55 | 1873 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1874 | { |
1875 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1876 | } | |
1877 | } | |
1878 | } | |
1879 | \f | |
1d8d96fa | 1880 | int window_select_count; |
7ab12479 | 1881 | |
5b03d3c0 RS |
1882 | Lisp_Object |
1883 | Fset_window_buffer_unwind (obuf) | |
1884 | Lisp_Object obuf; | |
1885 | { | |
1886 | Fset_buffer (obuf); | |
1887 | return Qnil; | |
1888 | } | |
1889 | ||
7ab12479 JB |
1890 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, |
1891 | "Make WINDOW display BUFFER as its contents.\n\ | |
1892 | BUFFER can be a buffer or buffer name.") | |
1893 | (window, buffer) | |
1894 | register Lisp_Object window, buffer; | |
1895 | { | |
1896 | register Lisp_Object tem; | |
1897 | register struct window *w = decode_window (window); | |
5b03d3c0 | 1898 | int count = specpdl_ptr - specpdl; |
7ab12479 JB |
1899 | |
1900 | buffer = Fget_buffer (buffer); | |
1901 | CHECK_BUFFER (buffer, 1); | |
1902 | ||
265a9e55 | 1903 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1904 | error ("Attempt to display deleted buffer"); |
1905 | ||
1906 | tem = w->buffer; | |
265a9e55 | 1907 | if (NILP (tem)) |
7ab12479 JB |
1908 | error ("Window is deleted"); |
1909 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1910 | is first being set up. */ | |
1911 | { | |
265a9e55 | 1912 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1913 | error ("Window is dedicated to `%s'", |
1914 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1915 | |
1916 | unshow_buffer (w); | |
1917 | } | |
1918 | ||
1919 | w->buffer = buffer; | |
86e48436 RS |
1920 | |
1921 | if (EQ (window, selected_window)) | |
1922 | XBUFFER (w->buffer)->last_selected_window = window; | |
beb4e312 RS |
1923 | |
1924 | /* Update time stamps of buffer display. */ | |
850ebd4f RS |
1925 | if (INTEGERP (XBUFFER (buffer)->display_count)) |
1926 | XSETINT (XBUFFER (buffer)->display_count, | |
296b535c | 1927 | XINT (XBUFFER (buffer)->display_count) + 1); |
beb4e312 | 1928 | XBUFFER (buffer)->display_time = Fcurrent_time (); |
86e48436 | 1929 | |
d834a2e9 | 1930 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1931 | w->window_end_valid = Qnil; |
dba06815 | 1932 | XSETFASTINT (w->hscroll, 0); |
b73ea88e RS |
1933 | set_marker_both (w->pointm, buffer, |
1934 | BUF_PT (XBUFFER (buffer)), BUF_PT_BYTE (XBUFFER (buffer))); | |
7ab12479 JB |
1935 | set_marker_restricted (w->start, |
1936 | make_number (XBUFFER (buffer)->last_window_start), | |
1937 | buffer); | |
1938 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1939 | w->force_start = Qnil; |
d834a2e9 | 1940 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1941 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1942 | windows_or_buffers_changed++; |
5b03d3c0 RS |
1943 | |
1944 | /* We must select BUFFER for running the window-scroll-functions. | |
1945 | If WINDOW is selected, switch permanently. | |
1946 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
1947 | if (EQ (window, selected_window)) |
1948 | Fset_buffer (buffer); | |
5b03d3c0 RS |
1949 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
1950 | because that might itself be a local variable. */ | |
1951 | else if (window_initialized) | |
1952 | { | |
1953 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
1954 | Fset_buffer (buffer); | |
1955 | } | |
1956 | ||
dba06815 RS |
1957 | if (! NILP (Vwindow_scroll_functions)) |
1958 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1959 | Fmarker_position (w->start)); | |
7ab12479 | 1960 | |
543f5fb1 RS |
1961 | if (! NILP (Vwindow_configuration_change_hook) |
1962 | && ! NILP (Vrun_hooks)) | |
1963 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1964 | ||
5b03d3c0 RS |
1965 | unbind_to (count, Qnil); |
1966 | ||
7ab12479 JB |
1967 | return Qnil; |
1968 | } | |
1969 | ||
1970 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1971 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
beb4e312 RS |
1972 | If WINDOW is not already selected, also make WINDOW's buffer current.\n\ |
1973 | Note that the main editor command loop\n\ | |
1974 | selects the buffer of the selected window before each command.") | |
7ab12479 JB |
1975 | (window) |
1976 | register Lisp_Object window; | |
1977 | { | |
1978 | register struct window *w; | |
1979 | register struct window *ow = XWINDOW (selected_window); | |
1980 | ||
605be8af | 1981 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1982 | |
1983 | w = XWINDOW (window); | |
1984 | ||
265a9e55 | 1985 | if (NILP (w->buffer)) |
7ab12479 JB |
1986 | error ("Trying to select deleted window or non-leaf window"); |
1987 | ||
d834a2e9 | 1988 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
1989 | if (EQ (window, selected_window)) |
1990 | return window; | |
1991 | ||
596ae0cf RS |
1992 | if (! NILP (ow->buffer)) |
1993 | set_marker_both (ow->pointm, ow->buffer, | |
1994 | BUF_PT (XBUFFER (ow->buffer)), | |
1995 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
7ab12479 JB |
1996 | |
1997 | selected_window = window; | |
44fa5b1e | 1998 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) |
7ab12479 | 1999 | { |
44fa5b1e | 2000 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2001 | /* Use this rather than Fhandle_switch_frame |
2002 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2003 | move around in the state where a minibuffer in a separate | |
2004 | frame is active. */ | |
2005 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2006 | } |
2007 | else | |
44fa5b1e | 2008 | selected_frame->selected_window = window; |
7ab12479 JB |
2009 | |
2010 | record_buffer (w->buffer); | |
2011 | Fset_buffer (w->buffer); | |
2012 | ||
86e48436 RS |
2013 | XBUFFER (w->buffer)->last_selected_window = window; |
2014 | ||
7ab12479 JB |
2015 | /* Go to the point recorded in the window. |
2016 | This is important when the buffer is in more | |
2017 | than one window. It also matters when | |
2018 | redisplay_window has altered point after scrolling, | |
2019 | because it makes the change only in the window. */ | |
2020 | { | |
2021 | register int new_point = marker_position (w->pointm); | |
2022 | if (new_point < BEGV) | |
2023 | SET_PT (BEGV); | |
a9c95e08 | 2024 | else if (new_point > ZV) |
7ab12479 JB |
2025 | SET_PT (ZV); |
2026 | else | |
2027 | SET_PT (new_point); | |
2028 | } | |
2029 | ||
2030 | windows_or_buffers_changed++; | |
2031 | return window; | |
2032 | } | |
2033 | ||
441a127e RS |
2034 | /* Deiconify the frame containing the window WINDOW, |
2035 | unless it is the selected frame; | |
2036 | then return WINDOW. | |
2037 | ||
2038 | The reason for the exception for the selected frame | |
2039 | is that it seems better not to change the selected frames visibility | |
2040 | merely because of displaying a different buffer in it. | |
2041 | The deiconification is useful when a buffer gets shown in | |
2042 | another frame that you were not using lately. */ | |
d07f802a RS |
2043 | |
2044 | static Lisp_Object | |
2045 | display_buffer_1 (window) | |
2046 | Lisp_Object window; | |
2047 | { | |
d07f802a RS |
2048 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
2049 | FRAME_SAMPLE_VISIBILITY (f); | |
60117126 RS |
2050 | if (f != selected_frame) |
2051 | { | |
2052 | if (FRAME_ICONIFIED_P (f)) | |
2053 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
37962e60 | 2054 | else if (FRAME_VISIBLE_P (f)) |
60117126 RS |
2055 | Fraise_frame (WINDOW_FRAME (XWINDOW (window))); |
2056 | } | |
d07f802a RS |
2057 | return window; |
2058 | } | |
2059 | ||
4628f7a4 | 2060 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2061 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2062 | The value is actually t if the frame should be called with default frame\n\ | |
2063 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2064 | See `special-display-buffer-names', and `special-display-regexps'.") |
2065 | (buffer_name) | |
2066 | Lisp_Object buffer_name; | |
2067 | { | |
2068 | Lisp_Object tem; | |
2069 | ||
2070 | CHECK_STRING (buffer_name, 1); | |
2071 | ||
2072 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2073 | if (!NILP (tem)) | |
2074 | return Qt; | |
2075 | ||
2076 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2077 | if (!NILP (tem)) | |
2078 | return XCDR (tem); | |
2079 | ||
2080 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2081 | { | |
2082 | Lisp_Object car = XCAR (tem); | |
2083 | if (STRINGP (car) | |
2084 | && fast_string_match (car, buffer_name) >= 0) | |
2085 | return Qt; | |
2086 | else if (CONSP (car) | |
2087 | && STRINGP (XCAR (car)) | |
2088 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2089 | return XCDR (car); |
4628f7a4 EN |
2090 | } |
2091 | return Qnil; | |
2092 | } | |
2093 | ||
2094 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2095 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2096 | See `same-window-buffer-names' and `same-window-regexps'.") |
2097 | (buffer_name) | |
2098 | Lisp_Object buffer_name; | |
2099 | { | |
2100 | Lisp_Object tem; | |
2101 | ||
2102 | CHECK_STRING (buffer_name, 1); | |
2103 | ||
2104 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2105 | if (!NILP (tem)) | |
2106 | return Qt; | |
2107 | ||
2108 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2109 | if (!NILP (tem)) | |
2110 | return Qt; | |
2111 | ||
2112 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2113 | { | |
2114 | Lisp_Object car = XCAR (tem); | |
2115 | if (STRINGP (car) | |
2116 | && fast_string_match (car, buffer_name) >= 0) | |
2117 | return Qt; | |
2118 | else if (CONSP (car) | |
2119 | && STRINGP (XCAR (car)) | |
2120 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2121 | return Qt; | |
2122 | } | |
2123 | return Qnil; | |
2124 | } | |
2125 | ||
53f76081 RS |
2126 | /* Use B so the default is (other-buffer). */ |
2127 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, | |
2128 | "BDisplay buffer: \nP", | |
7ab12479 JB |
2129 | "Make BUFFER appear in some window but don't select it.\n\ |
2130 | BUFFER can be a buffer or a buffer name.\n\ | |
2131 | If BUFFER is shown already in some window, just use that one,\n\ | |
2132 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2133 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2134 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 RS |
2135 | Returns the window displaying BUFFER.\n\ |
2136 | \n\ | |
2137 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2138 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
53f76081 RS |
2139 | buffer names are handled.\n\ |
2140 | \n\ | |
2141 | If optional argument FRAME is `visible', search all visible frames.\n\ | |
2142 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2143 | If FRAME is t, search all frames.\n\ | |
2144 | If FRAME is a frame, search only that frame.\n\ | |
2145 | If FRAME is nil, search only the selected frame\n\ | |
2146 | (actually the last nonminibuffer frame),\n\ | |
2147 | unless `pop-up-frames' is non-nil,\n\ | |
2148 | which means search visible and iconified frames.") | |
2149 | (buffer, not_this_window, frame) | |
2150 | register Lisp_Object buffer, not_this_window, frame; | |
7ab12479 | 2151 | { |
a90712c2 | 2152 | register Lisp_Object window, tem; |
7ab12479 JB |
2153 | |
2154 | buffer = Fget_buffer (buffer); | |
2155 | CHECK_BUFFER (buffer, 0); | |
2156 | ||
265a9e55 | 2157 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2158 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2159 | ||
265a9e55 | 2160 | if (NILP (not_this_window) |
7ab12479 | 2161 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2162 | return display_buffer_1 (selected_window); |
7ab12479 | 2163 | |
855d8627 RS |
2164 | /* See if the user has specified this buffer should appear |
2165 | in the selected window. */ | |
2166 | if (NILP (not_this_window)) | |
2167 | { | |
4628f7a4 | 2168 | tem = Fsame_window_p (XBUFFER (buffer)->name); |
855d8627 | 2169 | if (!NILP (tem)) |
c63dc4a2 RS |
2170 | { |
2171 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2172 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2173 | } |
855d8627 RS |
2174 | } |
2175 | ||
e8edb3ae | 2176 | /* If pop_up_frames, |
73dc5198 KH |
2177 | look for a window showing BUFFER on any visible or iconified frame. |
2178 | Otherwise search only the current frame. */ | |
53f76081 RS |
2179 | if (! NILP (frame)) |
2180 | tem = frame; | |
2181 | else if (pop_up_frames || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2182 | XSETFASTINT (tem, 0); |
2183 | else | |
73dc5198 KH |
2184 | XSETFRAME (tem, last_nonminibuf_frame); |
2185 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
2186 | if (!NILP (window) |
2187 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 2188 | { |
d07f802a | 2189 | return display_buffer_1 (window); |
f812f9c6 | 2190 | } |
7ab12479 | 2191 | |
a90712c2 | 2192 | /* Certain buffer names get special handling. */ |
4628f7a4 | 2193 | if (!NILP (Vspecial_display_function)) |
a90712c2 | 2194 | { |
4628f7a4 EN |
2195 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2196 | if (EQ (tem, Qt)) | |
a90712c2 | 2197 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2198 | if (CONSP (tem)) |
2199 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2200 | } |
2201 | ||
44fa5b1e JB |
2202 | /* If there are no frames open that have more than a minibuffer, |
2203 | we need to create a new frame. */ | |
2204 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2205 | { |
a90712c2 | 2206 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2207 | Fset_window_buffer (window, buffer); |
d07f802a | 2208 | return display_buffer_1 (window); |
7ab12479 | 2209 | } |
7ab12479 | 2210 | |
43bad991 | 2211 | if (pop_up_windows |
44fa5b1e | 2212 | || FRAME_MINIBUF_ONLY_P (selected_frame) |
cee67da9 RS |
2213 | /* If the current frame is a special display frame, |
2214 | don't try to reuse its windows. */ | |
2215 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 | 2216 | ) |
7ab12479 | 2217 | { |
12cae7c0 KH |
2218 | Lisp_Object frames; |
2219 | ||
37962e60 | 2220 | frames = Qnil; |
44fa5b1e | 2221 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) |
74112613 | 2222 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2223 | /* Don't try to create a window if would get an error */ |
2224 | if (split_height_threshold < window_min_height << 1) | |
2225 | split_height_threshold = window_min_height << 1; | |
2226 | ||
cee67da9 RS |
2227 | /* Note that both Fget_largest_window and Fget_lru_window |
2228 | ignore minibuffers and dedicated windows. | |
2229 | This means they can return nil. */ | |
7ab12479 | 2230 | |
cee67da9 RS |
2231 | /* If the frame we would try to split cannot be split, |
2232 | try other frames. */ | |
2233 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
2234 | : last_nonminibuf_frame)) | |
2235 | { | |
2236 | /* Try visible frames first. */ | |
2237 | window = Fget_largest_window (Qvisible); | |
2238 | /* If that didn't work, try iconified frames. */ | |
2239 | if (NILP (window)) | |
2240 | window = Fget_largest_window (make_number (0)); | |
2241 | if (NILP (window)) | |
2242 | window = Fget_largest_window (Qt); | |
2243 | } | |
2244 | else | |
2245 | window = Fget_largest_window (frames); | |
2246 | ||
92cca945 RS |
2247 | /* If we got a tall enough full-width window that can be split, |
2248 | split it. */ | |
265a9e55 | 2249 | if (!NILP (window) |
92cca945 | 2250 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2251 | && window_height (window) >= split_height_threshold |
111e5992 | 2252 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2253 | window = Fsplit_window (window, Qnil, Qnil); |
2254 | else | |
2255 | { | |
1942f68f RS |
2256 | Lisp_Object upper, lower, other; |
2257 | ||
44fa5b1e | 2258 | window = Fget_lru_window (frames); |
92cca945 RS |
2259 | /* If the LRU window is selected, and big enough, |
2260 | and can be split, split it. */ | |
cee67da9 | 2261 | if (!NILP (window) |
92cca945 | 2262 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2263 | && (EQ (window, selected_window) |
2264 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2265 | && window_height (window) >= window_min_height << 1) |
2266 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 2267 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 2268 | |
cee67da9 | 2269 | /* Try visible frames first. */ |
48d9379d RS |
2270 | if (NILP (window)) |
2271 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
2272 | if (NILP (window)) |
2273 | window = Fget_largest_window (Qvisible); | |
2274 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
2275 | if (NILP (window)) |
2276 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
2277 | if (NILP (window)) |
2278 | window = Fget_largest_window (make_number (0)); | |
2279 | /* Try invisible frames. */ | |
48d9379d RS |
2280 | if (NILP (window)) |
2281 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
2282 | if (NILP (window)) |
2283 | window = Fget_largest_window (Qt); | |
2284 | /* As a last resort, make a new frame. */ | |
2285 | if (NILP (window)) | |
2286 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2287 | /* If window appears above or below another, |
2288 | even out their heights. */ | |
cac66e4f | 2289 | other = upper = lower = Qnil; |
1942f68f RS |
2290 | if (!NILP (XWINDOW (window)->prev)) |
2291 | other = upper = XWINDOW (window)->prev, lower = window; | |
2292 | if (!NILP (XWINDOW (window)->next)) | |
2293 | other = lower = XWINDOW (window)->next, upper = window; | |
2294 | if (!NILP (other) | |
2295 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
296b535c KH |
2296 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
2297 | && (XFASTINT (XWINDOW (other)->height) | |
2298 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 2299 | { |
296b535c KH |
2300 | int total = (XFASTINT (XWINDOW (other)->height) |
2301 | + XFASTINT (XWINDOW (window)->height)); | |
8d77c0c8 KH |
2302 | Lisp_Object old_selected_window; |
2303 | old_selected_window = selected_window; | |
1942f68f | 2304 | |
8d77c0c8 | 2305 | selected_window = upper; |
296b535c KH |
2306 | change_window_height ((total / 2 |
2307 | - XFASTINT (XWINDOW (upper)->height)), | |
2308 | 0); | |
1942f68f RS |
2309 | selected_window = old_selected_window; |
2310 | } | |
7ab12479 JB |
2311 | } |
2312 | } | |
2313 | else | |
2314 | window = Fget_lru_window (Qnil); | |
2315 | ||
2316 | Fset_window_buffer (window, buffer); | |
d07f802a | 2317 | return display_buffer_1 (window); |
7ab12479 JB |
2318 | } |
2319 | ||
2320 | void | |
2321 | temp_output_buffer_show (buf) | |
2322 | register Lisp_Object buf; | |
2323 | { | |
2324 | register struct buffer *old = current_buffer; | |
2325 | register Lisp_Object window; | |
2326 | register struct window *w; | |
2327 | ||
bccd3dd1 RS |
2328 | XBUFFER (buf)->directory = current_buffer->directory; |
2329 | ||
7ab12479 | 2330 | Fset_buffer (buf); |
c6367666 | 2331 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2332 | BEGV = BEG; |
2333 | ZV = Z; | |
2334 | SET_PT (BEG); | |
1479ef51 | 2335 | XBUFFER (buf)->clip_changed = 1; |
7ab12479 JB |
2336 | set_buffer_internal (old); |
2337 | ||
2338 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2339 | call1 (Vtemp_buffer_show_function, buf); | |
2340 | else | |
2341 | { | |
53f76081 | 2342 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 2343 | |
44fa5b1e JB |
2344 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) |
2345 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7ab12479 JB |
2346 | Vminibuf_scroll_window = window; |
2347 | w = XWINDOW (window); | |
d834a2e9 | 2348 | XSETFASTINT (w->hscroll, 0); |
b73ea88e RS |
2349 | set_marker_restricted_both (w->start, buf, 1, 1); |
2350 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 2351 | |
beb4e312 RS |
2352 | /* Run temp-buffer-show-hook, with the chosen window selected |
2353 | and it sbuffer current. */ | |
f52cca03 | 2354 | if (!NILP (Vrun_hooks)) |
2cccc823 | 2355 | { |
f52cca03 RS |
2356 | Lisp_Object tem; |
2357 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2358 | if (!NILP (tem)) |
2359 | { | |
f52cca03 RS |
2360 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2361 | if (!NILP (tem)) | |
2362 | { | |
2363 | int count = specpdl_ptr - specpdl; | |
2cccc823 | 2364 | |
f52cca03 RS |
2365 | /* Select the window that was chosen, for running the hook. */ |
2366 | record_unwind_protect (Fset_window_configuration, | |
2367 | Fcurrent_window_configuration (Qnil)); | |
2cccc823 | 2368 | |
f52cca03 | 2369 | Fselect_window (window); |
beb4e312 | 2370 | Fset_buffer (w->buffer); |
f52cca03 RS |
2371 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
2372 | unbind_to (count, Qnil); | |
2373 | } | |
2cccc823 RS |
2374 | } |
2375 | } | |
2376 | } | |
7ab12479 JB |
2377 | } |
2378 | \f | |
dfcf069d | 2379 | static void |
7ab12479 JB |
2380 | make_dummy_parent (window) |
2381 | Lisp_Object window; | |
2382 | { | |
cffec418 | 2383 | Lisp_Object new; |
7ab12479 | 2384 | register struct window *o, *p; |
cffec418 KH |
2385 | register struct Lisp_Vector *vec; |
2386 | int i; | |
7ab12479 | 2387 | |
cffec418 KH |
2388 | o = XWINDOW (window); |
2389 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2390 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2391 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2392 | vec->size = VECSIZE (struct window); | |
2393 | p = (struct window *)vec; | |
2394 | XSETWINDOW (new, p); | |
7ab12479 | 2395 | |
d834a2e9 | 2396 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2397 | |
2398 | /* Put new into window structure in place of window */ | |
2399 | replace_window (window, new); | |
2400 | ||
2401 | o->next = Qnil; | |
2402 | o->prev = Qnil; | |
2403 | o->vchild = Qnil; | |
2404 | o->hchild = Qnil; | |
2405 | o->parent = new; | |
2406 | ||
2407 | p->start = Qnil; | |
2408 | p->pointm = Qnil; | |
2409 | p->buffer = Qnil; | |
2410 | } | |
2411 | ||
2412 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2413 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2414 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 2415 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
7ab12479 | 2416 | and put SIZE columns in the first of the pair.") |
77ae0fe3 KH |
2417 | (window, size, horflag) |
2418 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
2419 | { |
2420 | register Lisp_Object new; | |
2421 | register struct window *o, *p; | |
c0807608 | 2422 | FRAME_PTR fo; |
77ae0fe3 | 2423 | register int size_int; |
7ab12479 | 2424 | |
265a9e55 | 2425 | if (NILP (window)) |
7ab12479 JB |
2426 | window = selected_window; |
2427 | else | |
605be8af | 2428 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2429 | |
2430 | o = XWINDOW (window); | |
c0807608 | 2431 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 2432 | |
77ae0fe3 | 2433 | if (NILP (size)) |
7ab12479 | 2434 | { |
265a9e55 | 2435 | if (!NILP (horflag)) |
c0807608 KH |
2436 | /* Calculate the size of the left-hand window, by dividing |
2437 | the usable space in columns by two. */ | |
a59fed7e | 2438 | size_int = XFASTINT (o->width) >> 1; |
7ab12479 | 2439 | else |
77ae0fe3 | 2440 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
2441 | } |
2442 | else | |
2443 | { | |
77ae0fe3 KH |
2444 | CHECK_NUMBER (size, 1); |
2445 | size_int = XINT (size); | |
7ab12479 JB |
2446 | } |
2447 | ||
2448 | if (MINI_WINDOW_P (o)) | |
2449 | error ("Attempt to split minibuffer window"); | |
7ab12479 | 2450 | |
a481b3ea | 2451 | check_min_window_sizes (); |
7ab12479 | 2452 | |
265a9e55 | 2453 | if (NILP (horflag)) |
7ab12479 | 2454 | { |
77ae0fe3 KH |
2455 | if (size_int < window_min_height) |
2456 | error ("Window height %d too small (after splitting)", size_int); | |
2457 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 2458 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 2459 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
2460 | if (NILP (o->parent) |
2461 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2462 | { |
2463 | make_dummy_parent (window); | |
2464 | new = o->parent; | |
2465 | XWINDOW (new)->vchild = window; | |
2466 | } | |
2467 | } | |
2468 | else | |
2469 | { | |
77ae0fe3 KH |
2470 | if (size_int < window_min_width) |
2471 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
2472 | |
2473 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 2474 | error ("Window width %d too small (after splitting)", |
a59fed7e | 2475 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
2476 | if (NILP (o->parent) |
2477 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2478 | { |
2479 | make_dummy_parent (window); | |
2480 | new = o->parent; | |
2481 | XWINDOW (new)->hchild = window; | |
2482 | } | |
2483 | } | |
2484 | ||
2485 | /* Now we know that window's parent is a vertical combination | |
2486 | if we are dividing vertically, or a horizontal combination | |
2487 | if we are making side-by-side windows */ | |
2488 | ||
2489 | windows_or_buffers_changed++; | |
c0807608 | 2490 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
2491 | new = make_window (); |
2492 | p = XWINDOW (new); | |
2493 | ||
44fa5b1e | 2494 | p->frame = o->frame; |
7ab12479 | 2495 | p->next = o->next; |
265a9e55 | 2496 | if (!NILP (p->next)) |
7ab12479 JB |
2497 | XWINDOW (p->next)->prev = new; |
2498 | p->prev = window; | |
2499 | o->next = new; | |
2500 | p->parent = o->parent; | |
2501 | p->buffer = Qt; | |
2502 | ||
44fa5b1e | 2503 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2504 | |
265a9e55 | 2505 | if (!NILP (horflag)) |
7ab12479 JB |
2506 | { |
2507 | p->height = o->height; | |
2508 | p->top = o->top; | |
a59fed7e | 2509 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
2510 | XSETFASTINT (o->width, size_int); |
2511 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
2512 | } |
2513 | else | |
2514 | { | |
2515 | p->left = o->left; | |
2516 | p->width = o->width; | |
77ae0fe3 KH |
2517 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
2518 | XSETFASTINT (o->height, size_int); | |
2519 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
2520 | } |
2521 | ||
543f5fb1 RS |
2522 | Fset_window_buffer (new, o->buffer); |
2523 | ||
7ab12479 JB |
2524 | return new; |
2525 | } | |
2526 | \f | |
2527 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2528 | "Make current window ARG lines bigger.\n\ | |
2529 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
2530 | (arg, side) |
2531 | register Lisp_Object arg, side; | |
7ab12479 | 2532 | { |
413430c5 EN |
2533 | CHECK_NUMBER (arg, 0); |
2534 | change_window_height (XINT (arg), !NILP (side)); | |
543f5fb1 RS |
2535 | |
2536 | if (! NILP (Vwindow_configuration_change_hook)) | |
2537 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2538 | ||
7ab12479 JB |
2539 | return Qnil; |
2540 | } | |
2541 | ||
2542 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2543 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
2544 | From program, optional second arg non-nil means shrink sideways arg columns.") |
2545 | (arg, side) | |
2546 | register Lisp_Object arg, side; | |
7ab12479 | 2547 | { |
413430c5 EN |
2548 | CHECK_NUMBER (arg, 0); |
2549 | change_window_height (-XINT (arg), !NILP (side)); | |
543f5fb1 RS |
2550 | |
2551 | if (! NILP (Vwindow_configuration_change_hook)) | |
2552 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2553 | ||
7ab12479 JB |
2554 | return Qnil; |
2555 | } | |
2556 | ||
2557 | int | |
2558 | window_height (window) | |
2559 | Lisp_Object window; | |
2560 | { | |
2561 | register struct window *p = XWINDOW (window); | |
2562 | return XFASTINT (p->height); | |
2563 | } | |
2564 | ||
2565 | int | |
2566 | window_width (window) | |
2567 | Lisp_Object window; | |
2568 | { | |
2569 | register struct window *p = XWINDOW (window); | |
2570 | return XFASTINT (p->width); | |
2571 | } | |
2572 | ||
05c2896a JB |
2573 | #define MINSIZE(w) \ |
2574 | (widthflag \ | |
2575 | ? window_min_width \ | |
2576 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2577 | |
2578 | #define CURBEG(w) \ | |
05c2896a | 2579 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2580 | |
2581 | #define CURSIZE(w) \ | |
05c2896a | 2582 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2583 | |
2584 | /* Unlike set_window_height, this function | |
2585 | also changes the heights of the siblings so as to | |
2586 | keep everything consistent. */ | |
2587 | ||
5e14b1fc | 2588 | void |
7ab12479 JB |
2589 | change_window_height (delta, widthflag) |
2590 | register int delta; | |
2591 | int widthflag; | |
2592 | { | |
2593 | register Lisp_Object parent; | |
2594 | Lisp_Object window; | |
2595 | register struct window *p; | |
2596 | int *sizep; | |
5e14b1fc AS |
2597 | int (*sizefun) P_ ((Lisp_Object)) |
2598 | = widthflag ? window_width : window_height; | |
2599 | register void (*setsizefun) P_ ((Lisp_Object, int, int)) | |
2600 | = (widthflag ? set_window_width : set_window_height); | |
db98a733 RS |
2601 | int maximum; |
2602 | Lisp_Object next, prev; | |
7ab12479 | 2603 | |
a481b3ea | 2604 | check_min_window_sizes (); |
7ab12479 JB |
2605 | |
2606 | window = selected_window; | |
2607 | while (1) | |
2608 | { | |
2609 | p = XWINDOW (window); | |
2610 | parent = p->parent; | |
265a9e55 | 2611 | if (NILP (parent)) |
7ab12479 JB |
2612 | { |
2613 | if (widthflag) | |
2614 | error ("No other window to side of this one"); | |
2615 | break; | |
2616 | } | |
265a9e55 JB |
2617 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2618 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2619 | break; |
2620 | window = parent; | |
2621 | } | |
2622 | ||
05c2896a | 2623 | sizep = &CURSIZE (window); |
7ab12479 | 2624 | |
7ab12479 JB |
2625 | { |
2626 | register int maxdelta; | |
7ab12479 | 2627 | |
265a9e55 JB |
2628 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2629 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2630 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2631 | /* This is a frame with only one window, a minibuffer-only |
2632 | or a minibufferless frame. */ | |
d5783c40 | 2633 | : (delta = 0)); |
7ab12479 JB |
2634 | |
2635 | if (delta > maxdelta) | |
2636 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2637 | the full frame, or make the only window aside from the |
2638 | minibuffer the full frame. */ | |
7ab12479 | 2639 | delta = maxdelta; |
6b54027b | 2640 | } |
d5783c40 | 2641 | |
6b54027b RS |
2642 | if (*sizep + delta < MINSIZE (window)) |
2643 | { | |
543f5fb1 | 2644 | delete_window (window); |
d5783c40 | 2645 | return; |
6b54027b RS |
2646 | } |
2647 | ||
2648 | if (delta == 0) | |
2649 | return; | |
7ab12479 | 2650 | |
db98a733 RS |
2651 | /* Find the total we can get from other siblings. */ |
2652 | maximum = 0; | |
2653 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
2654 | maximum += (*sizefun) (next) - MINSIZE (next); | |
2655 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
2656 | maximum += (*sizefun) (prev) - MINSIZE (prev); | |
2657 | ||
2658 | /* If we can get it all from them, do so. */ | |
c6b530ed | 2659 | if (delta <= maximum) |
7ab12479 | 2660 | { |
db98a733 RS |
2661 | Lisp_Object first_unaffected; |
2662 | Lisp_Object first_affected; | |
2663 | ||
2664 | next = p->next; | |
2665 | prev = p->prev; | |
2666 | first_affected = window; | |
2667 | /* Look at one sibling at a time, | |
2668 | moving away from this window in both directions alternately, | |
2669 | and take as much as we can get without deleting that sibling. */ | |
dc91fb5d | 2670 | while (delta != 0) |
db98a733 RS |
2671 | { |
2672 | if (delta == 0) | |
2673 | break; | |
2674 | if (! NILP (next)) | |
2675 | { | |
2676 | int this_one = (*sizefun) (next) - MINSIZE (next); | |
2677 | if (this_one > delta) | |
2678 | this_one = delta; | |
2679 | ||
2680 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
2681 | (*setsizefun) (window, *sizep + this_one, 0); | |
2682 | ||
2683 | delta -= this_one; | |
2684 | next = XWINDOW (next)->next; | |
2685 | } | |
2686 | if (delta == 0) | |
2687 | break; | |
2688 | if (! NILP (prev)) | |
2689 | { | |
2690 | int this_one = (*sizefun) (prev) - MINSIZE (prev); | |
2691 | if (this_one > delta) | |
2692 | this_one = delta; | |
2693 | ||
2694 | first_affected = prev; | |
2695 | ||
2696 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
2697 | (*setsizefun) (window, *sizep + this_one, 0); | |
2698 | ||
2699 | delta -= this_one; | |
2700 | prev = XWINDOW (prev)->prev; | |
2701 | } | |
2702 | } | |
2703 | ||
2704 | /* Now recalculate the edge positions of all the windows affected, | |
2705 | based on the new sizes. */ | |
2706 | first_unaffected = next; | |
2707 | prev = first_affected; | |
2708 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
2709 | prev = next, next = XWINDOW (next)->next) | |
2710 | { | |
2711 | CURBEG (next) = CURBEG (prev) + (*sizefun) (prev); | |
2712 | /* This does not change size of NEXT, | |
2713 | but it propagates the new top edge to its children */ | |
2714 | (*setsizefun) (next, (*sizefun) (next), 0); | |
2715 | } | |
7ab12479 JB |
2716 | } |
2717 | else | |
2718 | { | |
2719 | register int delta1; | |
2720 | register int opht = (*sizefun) (parent); | |
2721 | ||
2722 | /* If trying to grow this window to or beyond size of the parent, | |
2723 | make delta1 so big that, on shrinking back down, | |
2724 | all the siblings end up with less than one line and are deleted. */ | |
2725 | if (opht <= *sizep + delta) | |
2726 | delta1 = opht * opht * 2; | |
2727 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2728 | lines to this window and to the parent, and then shrink | |
2729 | the parent back to its original size, the new proportional | |
2730 | size of this window will increase by delta. */ | |
2731 | else | |
2732 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2733 | ||
2734 | /* Add delta1 lines or columns to this window, and to the parent, | |
2735 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2736 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2737 | (*setsizefun) (window, *sizep + delta1, 0); |
2738 | ||
2739 | /* Squeeze out delta1 lines or columns from our parent, | |
2740 | shriking this window and siblings proportionately. | |
2741 | This brings parent back to correct size. | |
2742 | Delta1 was calculated so this makes this window the desired size, | |
2743 | taking it all out of the siblings. */ | |
2744 | (*setsizefun) (parent, opht, 0); | |
2745 | } | |
2746 | ||
d834a2e9 | 2747 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 2748 | XSETFASTINT (p->last_overlay_modified, 0); |
7ab12479 JB |
2749 | } |
2750 | #undef MINSIZE | |
2751 | #undef CURBEG | |
2752 | #undef CURSIZE | |
2753 | ||
2754 | \f | |
2755 | /* Return number of lines of text (not counting mode line) in W. */ | |
2756 | ||
2757 | int | |
2758 | window_internal_height (w) | |
2759 | struct window *w; | |
2760 | { | |
2761 | int ht = XFASTINT (w->height); | |
2762 | ||
2763 | if (MINI_WINDOW_P (w)) | |
2764 | return ht; | |
2765 | ||
265a9e55 JB |
2766 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2767 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2768 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2769 | return ht - 1; |
2770 | ||
2771 | return ht; | |
2772 | } | |
2773 | ||
535e0b8e JB |
2774 | |
2775 | /* Return the number of columns in W. | |
a3c87d4e | 2776 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2777 | separating W from the sibling to its right. */ |
2778 | int | |
2779 | window_internal_width (w) | |
2780 | struct window *w; | |
2781 | { | |
2782 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
535e0b8e JB |
2783 | int width = XINT (w->width); |
2784 | ||
a3c87d4e JB |
2785 | /* Scroll bars occupy a few columns. */ |
2786 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2787 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2788 | |
2789 | /* The column of `|' characters separating side-by-side windows | |
2790 | occupies one column only. */ | |
111e5992 RS |
2791 | if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) |
2792 | return width - 1; | |
2793 | ||
2794 | return width; | |
535e0b8e JB |
2795 | } |
2796 | ||
2797 | ||
101d1605 | 2798 | /* Scroll contents of window WINDOW up N lines. |
9317a85d | 2799 | If WHOLE is nonzero, it means scroll N screenfuls instead. */ |
7ab12479 | 2800 | |
101d1605 RS |
2801 | static void |
2802 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
2803 | Lisp_Object window; |
2804 | int n; | |
101d1605 | 2805 | int whole; |
f8026fd8 | 2806 | int noerror; |
7ab12479 JB |
2807 | { |
2808 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2809 | register int opoint = PT; |
cb8419b5 | 2810 | register int opoint_byte = PT_BYTE; |
b73ea88e | 2811 | register int pos, pos_byte; |
7ab12479 JB |
2812 | register int ht = window_internal_height (w); |
2813 | register Lisp_Object tem; | |
2814 | int lose; | |
2815 | Lisp_Object bolp, nmoved; | |
345d45b2 | 2816 | int startpos; |
101d1605 RS |
2817 | struct position posit; |
2818 | int original_vpos; | |
2819 | ||
2820 | startpos = marker_position (w->start); | |
2821 | ||
2822 | posit = *compute_motion (startpos, 0, 0, 0, | |
2823 | PT, ht, 0, | |
2824 | window_internal_width (w), XINT (w->hscroll), | |
2825 | 0, w); | |
2826 | original_vpos = posit.vpos; | |
0a1f771a | 2827 | |
d834a2e9 | 2828 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2829 | tem = Fpos_visible_in_window_p (tem, window); |
2830 | ||
265a9e55 | 2831 | if (NILP (tem)) |
7ab12479 | 2832 | { |
cd2be1dd | 2833 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 2834 | startpos = PT; |
7ab12479 JB |
2835 | } |
2836 | ||
345d45b2 | 2837 | SET_PT (startpos); |
5ce7b543 | 2838 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2839 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2840 | pos = PT; |
b73ea88e | 2841 | pos_byte = PT_BYTE; |
7ab12479 | 2842 | bolp = Fbolp (); |
b73ea88e | 2843 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
2844 | |
2845 | if (lose) | |
f8026fd8 JB |
2846 | { |
2847 | if (noerror) | |
2848 | return; | |
2849 | else | |
2850 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2851 | } | |
7ab12479 JB |
2852 | |
2853 | if (pos < ZV) | |
7ab12479 | 2854 | { |
0c7da84e RS |
2855 | int this_scroll_margin = scroll_margin; |
2856 | ||
2857 | /* Don't use a scroll margin that is negative or too large. */ | |
2858 | if (this_scroll_margin < 0) | |
2859 | this_scroll_margin = 0; | |
2860 | ||
2861 | if (XINT (w->height) < 4 * scroll_margin) | |
2862 | this_scroll_margin = XINT (w->height) / 4; | |
2863 | ||
b73ea88e | 2864 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
2865 | w->start_at_line_beg = bolp; |
2866 | w->update_mode_line = Qt; | |
d834a2e9 | 2867 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2868 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
2869 | /* Set force_start so that redisplay_window will run |
2870 | the window-scroll-functions. */ | |
2871 | w->force_start = Qt; | |
0c7da84e | 2872 | |
9317a85d | 2873 | if (whole && scroll_preserve_screen_position) |
0c7da84e | 2874 | { |
b73ea88e | 2875 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 2876 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 2877 | } |
101d1605 RS |
2878 | /* If we scrolled forward, put point enough lines down |
2879 | that it is outside the scroll margin. */ | |
2880 | else if (n > 0) | |
0c7da84e | 2881 | { |
101d1605 RS |
2882 | int top_margin; |
2883 | ||
2884 | if (this_scroll_margin > 0) | |
2885 | { | |
b73ea88e | 2886 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
2887 | Fvertical_motion (make_number (this_scroll_margin), window); |
2888 | top_margin = PT; | |
2889 | } | |
2890 | else | |
2891 | top_margin = pos; | |
2892 | ||
2893 | if (top_margin <= opoint) | |
b73ea88e | 2894 | SET_PT_BOTH (opoint, opoint_byte); |
9317a85d | 2895 | else if (scroll_preserve_screen_position) |
101d1605 | 2896 | { |
b73ea88e | 2897 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
2898 | Fvertical_motion (make_number (original_vpos), window); |
2899 | } | |
9317a85d | 2900 | else |
335406fc | 2901 | SET_PT (top_margin); |
0c7da84e | 2902 | } |
101d1605 | 2903 | else if (n < 0) |
7ab12479 | 2904 | { |
101d1605 RS |
2905 | int bottom_margin; |
2906 | ||
0c7da84e RS |
2907 | /* If we scrolled backward, put point near the end of the window |
2908 | but not within the scroll margin. */ | |
b73ea88e | 2909 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 2910 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
2911 | if (XFASTINT (tem) == ht - this_scroll_margin) |
2912 | bottom_margin = PT; | |
2913 | else | |
2914 | bottom_margin = PT + 1; | |
2915 | ||
2916 | if (bottom_margin > opoint) | |
b73ea88e | 2917 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 2918 | else |
101d1605 | 2919 | { |
9317a85d RS |
2920 | if (scroll_preserve_screen_position) |
2921 | { | |
b73ea88e | 2922 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
2923 | Fvertical_motion (make_number (original_vpos), window); |
2924 | } | |
2925 | else | |
2926 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 2927 | } |
7ab12479 JB |
2928 | } |
2929 | } | |
2930 | else | |
f8026fd8 JB |
2931 | { |
2932 | if (noerror) | |
2933 | return; | |
2934 | else | |
2935 | Fsignal (Qend_of_buffer, Qnil); | |
2936 | } | |
7ab12479 JB |
2937 | } |
2938 | \f | |
2939 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2940 | ||
2941 | static void | |
2942 | scroll_command (n, direction) | |
2943 | register Lisp_Object n; | |
2944 | int direction; | |
2945 | { | |
2946 | register int defalt; | |
2947 | int count = specpdl_ptr - specpdl; | |
2948 | ||
95605e15 JB |
2949 | /* If selected window's buffer isn't current, make it current for the moment. |
2950 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2951 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2952 | { |
2953 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2954 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2955 | } | |
7ab12479 JB |
2956 | |
2957 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2958 | - next_screen_context_lines); | |
2959 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2960 | ||
265a9e55 | 2961 | if (NILP (n)) |
101d1605 | 2962 | window_scroll (selected_window, defalt, 1, 0); |
7ab12479 | 2963 | else if (EQ (n, Qminus)) |
101d1605 | 2964 | window_scroll (selected_window, - defalt, 1, 0); |
7ab12479 JB |
2965 | else |
2966 | { | |
2967 | n = Fprefix_numeric_value (n); | |
101d1605 | 2968 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 2969 | } |
95605e15 JB |
2970 | |
2971 | unbind_to (count, Qnil); | |
7ab12479 JB |
2972 | } |
2973 | ||
2974 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2975 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2976 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2977 | Negative ARG means scroll downward.\n\ |
a5fcbc4e RS |
2978 | If ARG is the atom `-', scroll downward by nearly full screen. |
2979 | When calling from a program, supply as argument a number, nil, or '-.") | |
413430c5 EN |
2980 | (arg) |
2981 | Lisp_Object arg; | |
7ab12479 | 2982 | { |
413430c5 | 2983 | scroll_command (arg, 1); |
7ab12479 JB |
2984 | return Qnil; |
2985 | } | |
2986 | ||
2987 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a5fcbc4e | 2988 | "Scroll text of current window down ARG lines; or near full screen if no ARG.\n\ |
7ab12479 | 2989 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
279e0e0c | 2990 | Negative ARG means scroll upward.\n\ |
a5fcbc4e RS |
2991 | If ARG is the atom `-', scroll upward by nearly full screen. |
2992 | When calling from a program, supply as argument a number, nil, or '-.") | |
413430c5 EN |
2993 | (arg) |
2994 | Lisp_Object arg; | |
7ab12479 | 2995 | { |
413430c5 | 2996 | scroll_command (arg, -1); |
7ab12479 JB |
2997 | return Qnil; |
2998 | } | |
ccd0664b RS |
2999 | \f |
3000 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
3001 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 3002 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
3003 | specifies the window.\n\ |
3004 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
3005 | showing that buffer is used.") | |
eb16ec06 | 3006 | () |
7ab12479 | 3007 | { |
ccd0664b | 3008 | Lisp_Object window; |
7ab12479 JB |
3009 | |
3010 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 3011 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
3012 | window = Vminibuf_scroll_window; |
3013 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 3014 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
3015 | { |
3016 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 3017 | if (NILP (window)) |
53f76081 | 3018 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
3019 | } |
3020 | else | |
dbc4e1c1 JB |
3021 | { |
3022 | /* Nothing specified; look for a neighboring window on the same | |
3023 | frame. */ | |
3024 | window = Fnext_window (selected_window, Qnil, Qnil); | |
3025 | ||
3026 | if (EQ (window, selected_window)) | |
3027 | /* That didn't get us anywhere; look for a window on another | |
3028 | visible frame. */ | |
3029 | do | |
3030 | window = Fnext_window (window, Qnil, Qt); | |
3031 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
3032 | && ! EQ (window, selected_window)); | |
3033 | } | |
3034 | ||
605be8af | 3035 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
3036 | |
3037 | if (EQ (window, selected_window)) | |
3038 | error ("There is no other window"); | |
3039 | ||
ccd0664b RS |
3040 | return window; |
3041 | } | |
3042 | ||
3043 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
3044 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
a5fcbc4e | 3045 | A near full screen is `next-screen-context-lines' less than a full screen. |
ccd0664b RS |
3046 | The next window is the one below the current one; or the one at the top\n\ |
3047 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
a5fcbc4e RS |
3048 | If ARG is the atom `-', scroll downward by nearly full screen. |
3049 | When calling from a program, supply as argument a number, nil, or '-.\n\ | |
ccd0664b RS |
3050 | \n\ |
3051 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
3052 | specifies the window to scroll.\n\ | |
3053 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
3054 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
3055 | (arg) |
3056 | register Lisp_Object arg; | |
ccd0664b RS |
3057 | { |
3058 | register Lisp_Object window; | |
2f787aa3 | 3059 | register int defalt; |
ccd0664b RS |
3060 | register struct window *w; |
3061 | register int count = specpdl_ptr - specpdl; | |
3062 | ||
3063 | window = Fother_window_for_scrolling (); | |
3064 | ||
7ab12479 | 3065 | w = XWINDOW (window); |
2f787aa3 KH |
3066 | defalt = window_internal_height (w) - next_screen_context_lines; |
3067 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
3068 | |
3069 | /* Don't screw up if window_scroll gets an error. */ | |
3070 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
3071 | ||
3072 | Fset_buffer (w->buffer); | |
3073 | SET_PT (marker_position (w->pointm)); | |
3074 | ||
413430c5 | 3075 | if (NILP (arg)) |
101d1605 | 3076 | window_scroll (window, defalt, 1, 1); |
413430c5 | 3077 | else if (EQ (arg, Qminus)) |
101d1605 | 3078 | window_scroll (window, -defalt, 1, 1); |
7ab12479 JB |
3079 | else |
3080 | { | |
413430c5 EN |
3081 | if (CONSP (arg)) |
3082 | arg = Fcar (arg); | |
3083 | CHECK_NUMBER (arg, 0); | |
101d1605 | 3084 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
3085 | } |
3086 | ||
b73ea88e | 3087 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 3088 | unbind_to (count, Qnil); |
7ab12479 JB |
3089 | |
3090 | return Qnil; | |
3091 | } | |
3092 | \f | |
644b477c | 3093 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
3094 | "Scroll selected window display ARG columns left.\n\ |
3095 | Default for ARG is window width minus 2.") | |
3096 | (arg) | |
3097 | register Lisp_Object arg; | |
3098 | { | |
3099 | ||
265a9e55 | 3100 | if (NILP (arg)) |
d834a2e9 | 3101 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
3102 | else |
3103 | arg = Fprefix_numeric_value (arg); | |
3104 | ||
3105 | return | |
3106 | Fset_window_hscroll (selected_window, | |
3107 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
3108 | + XINT (arg))); | |
3109 | } | |
3110 | ||
644b477c | 3111 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
3112 | "Scroll selected window display ARG columns right.\n\ |
3113 | Default for ARG is window width minus 2.") | |
3114 | (arg) | |
3115 | register Lisp_Object arg; | |
3116 | { | |
265a9e55 | 3117 | if (NILP (arg)) |
d834a2e9 | 3118 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
3119 | else |
3120 | arg = Fprefix_numeric_value (arg); | |
3121 | ||
3122 | return | |
3123 | Fset_window_hscroll (selected_window, | |
3124 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
3125 | - XINT (arg))); | |
3126 | } | |
3127 | ||
3128 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 3129 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 3130 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 3131 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 3132 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 3133 | redraws with point in the center of the current window.") |
413430c5 EN |
3134 | (arg) |
3135 | register Lisp_Object arg; | |
7ab12479 JB |
3136 | { |
3137 | register struct window *w = XWINDOW (selected_window); | |
3138 | register int ht = window_internal_height (w); | |
113d9015 | 3139 | struct position pos; |
478292ed RS |
3140 | struct buffer *buf = XBUFFER (w->buffer); |
3141 | struct buffer *obuf = current_buffer; | |
7ab12479 | 3142 | |
413430c5 | 3143 | if (NILP (arg)) |
7ab12479 | 3144 | { |
44fa5b1e | 3145 | extern int frame_garbaged; |
7ab12479 | 3146 | |
44fa5b1e | 3147 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 3148 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 3149 | } |
413430c5 | 3150 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 3151 | { |
413430c5 | 3152 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
3153 | } |
3154 | else | |
3155 | { | |
413430c5 EN |
3156 | arg = Fprefix_numeric_value (arg); |
3157 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
3158 | } |
3159 | ||
413430c5 EN |
3160 | if (XINT (arg) < 0) |
3161 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 3162 | |
478292ed | 3163 | set_buffer_internal (buf); |
6ec8bbd2 | 3164 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 3165 | |
b73ea88e RS |
3166 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
3167 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
3168 | || FETCH_BYTE (pos.bytepos - 1) == '\n') | |
113d9015 | 3169 | ? Qt : Qnil); |
7ab12479 | 3170 | w->force_start = Qt; |
478292ed | 3171 | set_buffer_internal (obuf); |
7ab12479 JB |
3172 | |
3173 | return Qnil; | |
3174 | } | |
3175 | \f | |
3176 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
3177 | 1, 1, "P", | |
3178 | "Position point relative to window.\n\ | |
19e3bf0a | 3179 | With no argument, position point at center of window.\n\ |
44fa5b1e | 3180 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
3181 | negative means relative to bottom of window.") |
3182 | (arg) | |
3183 | register Lisp_Object arg; | |
3184 | { | |
3185 | register struct window *w = XWINDOW (selected_window); | |
3186 | register int height = window_internal_height (w); | |
3187 | register int start; | |
540b6aa0 | 3188 | Lisp_Object window; |
7ab12479 | 3189 | |
265a9e55 | 3190 | if (NILP (arg)) |
d834a2e9 | 3191 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
3192 | else |
3193 | { | |
3194 | arg = Fprefix_numeric_value (arg); | |
3195 | if (XINT (arg) < 0) | |
3196 | XSETINT (arg, XINT (arg) + height); | |
3197 | } | |
3198 | ||
3199 | start = marker_position (w->start); | |
74112613 | 3200 | XSETWINDOW (window, w); |
7ab12479 JB |
3201 | if (start < BEGV || start > ZV) |
3202 | { | |
cd2be1dd | 3203 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 3204 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
3205 | w->start_at_line_beg = Fbolp (); |
3206 | w->force_start = Qt; | |
3207 | } | |
3208 | else | |
b73ea88e | 3209 | Fgoto_char (w->start); |
7ab12479 | 3210 | |
540b6aa0 | 3211 | return Fvertical_motion (arg, window); |
7ab12479 JB |
3212 | } |
3213 | \f | |
3214 | struct save_window_data | |
3215 | { | |
f5ccc0cc | 3216 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 3217 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 3218 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 3219 | Lisp_Object selected_frame; |
7ab12479 JB |
3220 | Lisp_Object current_window; |
3221 | Lisp_Object current_buffer; | |
3222 | Lisp_Object minibuf_scroll_window; | |
3223 | Lisp_Object root_window; | |
bdc727bf | 3224 | Lisp_Object focus_frame; |
756b6edc RS |
3225 | /* Record the values of window-min-width and window-min-height |
3226 | so that window sizes remain consistent with them. */ | |
3227 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
3228 | /* A vector, each of whose elements is a struct saved_window |
3229 | for one window. */ | |
7ab12479 JB |
3230 | Lisp_Object saved_windows; |
3231 | }; | |
ff06df24 | 3232 | |
cbff28e8 | 3233 | /* This is saved as a Lisp_Vector */ |
7ab12479 JB |
3234 | struct saved_window |
3235 | { | |
3236 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 3237 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
3238 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
3239 | ||
3240 | Lisp_Object window; | |
3241 | Lisp_Object buffer, start, pointm, mark; | |
3242 | Lisp_Object left, top, width, height, hscroll; | |
3243 | Lisp_Object parent, prev; | |
3244 | Lisp_Object start_at_line_beg; | |
3245 | Lisp_Object display_table; | |
3246 | }; | |
3247 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
3248 | ||
3249 | #define SAVED_WINDOW_N(swv,n) \ | |
3250 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
3251 | ||
3252 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
cbff28e8 | 3253 | "Return t if OBJECT is a window-configuration object.") |
413430c5 EN |
3254 | (object) |
3255 | Lisp_Object object; | |
7ab12479 | 3256 | { |
413430c5 | 3257 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
3258 | return Qt; |
3259 | return Qnil; | |
3260 | } | |
3261 | ||
d5b2799e RS |
3262 | DEFUN ("set-window-configuration", Fset_window_configuration, |
3263 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
3264 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
3265 | CONFIGURATION must be a value previously returned\n\ | |
3266 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
3267 | (configuration) |
3268 | Lisp_Object configuration; | |
7ab12479 | 3269 | { |
7ab12479 JB |
3270 | register struct save_window_data *data; |
3271 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 3272 | Lisp_Object new_current_buffer; |
fd482be5 | 3273 | Lisp_Object frame; |
44fa5b1e | 3274 | FRAME_PTR f; |
d2b35234 | 3275 | int old_point = -1; |
7ab12479 | 3276 | |
017b2bad | 3277 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 3278 | { |
2f83aebe JB |
3279 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
3280 | configuration); | |
7ab12479 JB |
3281 | } |
3282 | ||
2f83aebe | 3283 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
3284 | saved_windows = XVECTOR (data->saved_windows); |
3285 | ||
7ab12479 | 3286 | new_current_buffer = data->current_buffer; |
265a9e55 | 3287 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 3288 | new_current_buffer = Qnil; |
d2b35234 RS |
3289 | else |
3290 | { | |
3291 | if (XBUFFER (new_current_buffer) == current_buffer) | |
3292 | old_point = PT; | |
cbff28e8 | 3293 | |
d2b35234 | 3294 | } |
7ab12479 | 3295 | |
fd482be5 JB |
3296 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3297 | f = XFRAME (frame); | |
9ace597f | 3298 | |
fd482be5 JB |
3299 | /* If f is a dead frame, don't bother rebuilding its window tree. |
3300 | However, there is other stuff we should still try to do below. */ | |
3301 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 3302 | { |
fd482be5 JB |
3303 | register struct window *w; |
3304 | register struct saved_window *p; | |
3305 | int k; | |
3306 | ||
3307 | /* If the frame has been resized since this window configuration was | |
3308 | made, we change the frame to the size specified in the | |
3309 | configuration, restore the configuration, and then resize it | |
3310 | back. We keep track of the prevailing height in these variables. */ | |
3311 | int previous_frame_height = FRAME_HEIGHT (f); | |
3312 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 3313 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 | 3314 | |
d2b35234 RS |
3315 | /* The mouse highlighting code could get screwed up |
3316 | if it runs during this. */ | |
3317 | BLOCK_INPUT; | |
3318 | ||
fd482be5 JB |
3319 | if (XFASTINT (data->frame_height) != previous_frame_height |
3320 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a AS |
3321 | change_frame_size (f, XFASTINT (data->frame_height), |
3322 | XFASTINT (data->frame_width), 0, 0); | |
e3678b64 | 3323 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3324 | if (XFASTINT (data->frame_menu_bar_lines) |
3325 | != previous_frame_menu_bar_lines) | |
f8ad443a | 3326 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
217f2871 | 3327 | #endif |
fd482be5 | 3328 | |
596ae0cf RS |
3329 | if (! NILP (XWINDOW (selected_window)->buffer)) |
3330 | { | |
3331 | w = XWINDOW (selected_window); | |
3332 | set_marker_both (w->pointm, | |
3333 | w->buffer, | |
3334 | BUF_PT (XBUFFER (w->buffer)), | |
3335 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
3336 | } | |
3337 | ||
fd482be5 | 3338 | windows_or_buffers_changed++; |
29aeee73 | 3339 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 3340 | |
756b6edc RS |
3341 | /* Temporarily avoid any problems with windows that are smaller |
3342 | than they are supposed to be. */ | |
3343 | window_min_height = 1; | |
3344 | window_min_width = 1; | |
3345 | ||
fd482be5 JB |
3346 | /* Kludge Alert! |
3347 | Mark all windows now on frame as "deleted". | |
3348 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 3349 | |
fd482be5 JB |
3350 | Save their current buffers in their height fields, since we may |
3351 | need it later, if a buffer saved in the configuration is now | |
3352 | dead. */ | |
3353 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
3354 | ||
3355 | for (k = 0; k < saved_windows->size; k++) | |
3356 | { | |
3357 | p = SAVED_WINDOW_N (saved_windows, k); | |
3358 | w = XWINDOW (p->window); | |
3359 | w->next = Qnil; | |
7ab12479 | 3360 | |
fd482be5 JB |
3361 | if (!NILP (p->parent)) |
3362 | w->parent = SAVED_WINDOW_N (saved_windows, | |
3363 | XFASTINT (p->parent))->window; | |
3364 | else | |
3365 | w->parent = Qnil; | |
7ab12479 | 3366 | |
fd482be5 | 3367 | if (!NILP (p->prev)) |
7ab12479 | 3368 | { |
fd482be5 JB |
3369 | w->prev = SAVED_WINDOW_N (saved_windows, |
3370 | XFASTINT (p->prev))->window; | |
3371 | XWINDOW (w->prev)->next = p->window; | |
3372 | } | |
3373 | else | |
3374 | { | |
3375 | w->prev = Qnil; | |
3376 | if (!NILP (w->parent)) | |
3377 | { | |
3378 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
3379 | { | |
3380 | XWINDOW (w->parent)->vchild = p->window; | |
3381 | XWINDOW (w->parent)->hchild = Qnil; | |
3382 | } | |
3383 | else | |
3384 | { | |
3385 | XWINDOW (w->parent)->hchild = p->window; | |
3386 | XWINDOW (w->parent)->vchild = Qnil; | |
3387 | } | |
3388 | } | |
3389 | } | |
3390 | ||
3391 | /* If we squirreled away the buffer in the window's height, | |
3392 | restore it now. */ | |
017b2bad | 3393 | if (BUFFERP (w->height)) |
fd482be5 JB |
3394 | w->buffer = w->height; |
3395 | w->left = p->left; | |
3396 | w->top = p->top; | |
3397 | w->width = p->width; | |
3398 | w->height = p->height; | |
3399 | w->hscroll = p->hscroll; | |
3400 | w->display_table = p->display_table; | |
d834a2e9 | 3401 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3402 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
3403 | |
3404 | /* Reinstall the saved buffer and pointers into it. */ | |
3405 | if (NILP (p->buffer)) | |
3406 | w->buffer = p->buffer; | |
3407 | else | |
3408 | { | |
3409 | if (!NILP (XBUFFER (p->buffer)->name)) | |
3410 | /* If saved buffer is alive, install it. */ | |
3411 | { | |
3412 | w->buffer = p->buffer; | |
3413 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
3414 | set_marker_restricted (w->start, p->start, w->buffer); |
3415 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 3416 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 3417 | p->mark, w->buffer); |
fd482be5 JB |
3418 | |
3419 | /* As documented in Fcurrent_window_configuration, don't | |
3420 | save the location of point in the buffer which was current | |
3421 | when the window configuration was recorded. */ | |
6b54027b RS |
3422 | if (!EQ (p->buffer, new_current_buffer) |
3423 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
3424 | Fgoto_char (w->pointm); |
3425 | } | |
52a68e98 RS |
3426 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
3427 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 3428 | { |
fd482be5 JB |
3429 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
3430 | /* This will set the markers to beginning of visible | |
3431 | range. */ | |
3432 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
3433 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
3434 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3435 | } |
3436 | else | |
fd482be5 | 3437 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 3438 | are real. */ |
7ab12479 | 3439 | { |
fd482be5 JB |
3440 | /* Set window markers at start of visible range. */ |
3441 | if (XMARKER (w->start)->buffer == 0) | |
3442 | set_marker_restricted (w->start, make_number (0), | |
3443 | w->buffer); | |
3444 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
3445 | set_marker_restricted_both (w->pointm, w->buffer, |
3446 | BUF_PT (XBUFFER (w->buffer)), | |
3447 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 3448 | w->start_at_line_beg = Qt; |
7ab12479 JB |
3449 | } |
3450 | } | |
3451 | } | |
9ace597f | 3452 | |
fd482be5 JB |
3453 | FRAME_ROOT_WINDOW (f) = data->root_window; |
3454 | Fselect_window (data->current_window); | |
396a830c RS |
3455 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
3456 | = selected_window; | |
7ab12479 | 3457 | |
db269683 | 3458 | if (NILP (data->focus_frame) |
017b2bad | 3459 | || (FRAMEP (data->focus_frame) |
db269683 JB |
3460 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
3461 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 3462 | |
fd482be5 JB |
3463 | #if 0 /* I don't understand why this is needed, and it causes problems |
3464 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 3465 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
3466 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
3467 | Qnil, 0); | |
fd482be5 JB |
3468 | #endif |
3469 | ||
3470 | /* Set the screen height to the value it had before this function. */ | |
3471 | if (previous_frame_height != FRAME_HEIGHT (f) | |
3472 | || previous_frame_width != FRAME_WIDTH (f)) | |
3473 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
3474 | 0, 0); | |
e3678b64 | 3475 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 3476 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
3477 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
3478 | make_number (0)); | |
217f2871 | 3479 | #endif |
d2b35234 RS |
3480 | |
3481 | UNBLOCK_INPUT; | |
756b6edc | 3482 | |
478292ed RS |
3483 | /* Fselect_window will have made f the selected frame, so we |
3484 | reselect the proper frame here. Fhandle_switch_frame will change the | |
3485 | selected window too, but that doesn't make the call to | |
3486 | Fselect_window above totally superfluous; it still sets f's | |
3487 | selected window. */ | |
3488 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
3489 | do_switch_frame (data->selected_frame, Qnil, 0); | |
3490 | ||
3491 | if (! NILP (Vwindow_configuration_change_hook) | |
3492 | && ! NILP (Vrun_hooks)) | |
3493 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3494 | } | |
bdc727bf JB |
3495 | |
3496 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
3497 | { |
3498 | Fset_buffer (new_current_buffer); | |
3499 | ||
3500 | /* If the buffer that is current now is the same | |
3501 | that was current before setting the window configuration, | |
3502 | don't alter its PT. */ | |
3503 | if (old_point >= 0) | |
3504 | SET_PT (old_point); | |
3505 | } | |
bdc727bf | 3506 | |
478292ed RS |
3507 | /* Restore the minimum heights recorded in the configuration. */ |
3508 | window_min_height = XINT (data->min_height); | |
3509 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 3510 | |
478292ed | 3511 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 3512 | |
478292ed | 3513 | return Qnil; |
7ab12479 JB |
3514 | } |
3515 | ||
44fa5b1e | 3516 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3517 | by setting their buffers to nil. */ |
3518 | ||
fd482be5 | 3519 | void |
7ab12479 JB |
3520 | delete_all_subwindows (w) |
3521 | register struct window *w; | |
3522 | { | |
265a9e55 | 3523 | if (!NILP (w->next)) |
7ab12479 | 3524 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3525 | if (!NILP (w->vchild)) |
7ab12479 | 3526 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3527 | if (!NILP (w->hchild)) |
7ab12479 | 3528 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3529 | |
3530 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3531 | ||
86e48436 RS |
3532 | if (!NILP (w->buffer)) |
3533 | unshow_buffer (w); | |
3534 | ||
605be8af JB |
3535 | /* We set all three of these fields to nil, to make sure that we can |
3536 | distinguish this dead window from any live window. Live leaf | |
3537 | windows will have buffer set, and combination windows will have | |
3538 | vchild or hchild set. */ | |
3539 | w->buffer = Qnil; | |
3540 | w->vchild = Qnil; | |
3541 | w->hchild = Qnil; | |
7ab12479 JB |
3542 | } |
3543 | \f | |
3544 | static int | |
3545 | count_windows (window) | |
3546 | register struct window *window; | |
3547 | { | |
3548 | register int count = 1; | |
265a9e55 | 3549 | if (!NILP (window->next)) |
7ab12479 | 3550 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3551 | if (!NILP (window->vchild)) |
7ab12479 | 3552 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3553 | if (!NILP (window->hchild)) |
7ab12479 JB |
3554 | count += count_windows (XWINDOW (window->hchild)); |
3555 | return count; | |
3556 | } | |
3557 | ||
3558 | static int | |
3559 | save_window_save (window, vector, i) | |
3560 | Lisp_Object window; | |
3561 | struct Lisp_Vector *vector; | |
3562 | int i; | |
3563 | { | |
3564 | register struct saved_window *p; | |
3565 | register struct window *w; | |
3566 | register Lisp_Object tem; | |
3567 | ||
265a9e55 | 3568 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3569 | { |
3570 | p = SAVED_WINDOW_N (vector, i); | |
3571 | w = XWINDOW (window); | |
3572 | ||
d834a2e9 | 3573 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3574 | p->window = window; |
3575 | p->buffer = w->buffer; | |
3576 | p->left = w->left; | |
3577 | p->top = w->top; | |
3578 | p->width = w->width; | |
3579 | p->height = w->height; | |
3580 | p->hscroll = w->hscroll; | |
3581 | p->display_table = w->display_table; | |
265a9e55 | 3582 | if (!NILP (w->buffer)) |
7ab12479 JB |
3583 | { |
3584 | /* Save w's value of point in the window configuration. | |
3585 | If w is the selected window, then get the value of point | |
3586 | from the buffer; pointm is garbage in the selected window. */ | |
3587 | if (EQ (window, selected_window)) | |
3588 | { | |
3589 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
3590 | set_marker_both (p->pointm, w->buffer, |
3591 | BUF_PT (XBUFFER (w->buffer)), | |
3592 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
3593 | } |
3594 | else | |
eeb82665 | 3595 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 3596 | |
eeb82665 | 3597 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
3598 | p->start_at_line_beg = w->start_at_line_beg; |
3599 | ||
3600 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 3601 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
3602 | } |
3603 | else | |
3604 | { | |
3605 | p->pointm = Qnil; | |
3606 | p->start = Qnil; | |
3607 | p->mark = Qnil; | |
3608 | p->start_at_line_beg = Qnil; | |
3609 | } | |
3610 | ||
265a9e55 | 3611 | if (NILP (w->parent)) |
7ab12479 JB |
3612 | p->parent = Qnil; |
3613 | else | |
3614 | p->parent = XWINDOW (w->parent)->temslot; | |
3615 | ||
265a9e55 | 3616 | if (NILP (w->prev)) |
7ab12479 JB |
3617 | p->prev = Qnil; |
3618 | else | |
3619 | p->prev = XWINDOW (w->prev)->temslot; | |
3620 | ||
265a9e55 | 3621 | if (!NILP (w->vchild)) |
7ab12479 | 3622 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3623 | if (!NILP (w->hchild)) |
7ab12479 JB |
3624 | i = save_window_save (w->hchild, vector, i); |
3625 | } | |
3626 | ||
3627 | return i; | |
3628 | } | |
3629 | ||
a0d76c27 EN |
3630 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
3631 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
3632 | "Return an object representing the current window configuration of FRAME.\n\ |
3633 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3634 | This describes the number of windows, their sizes and current buffers,\n\ |
3635 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3636 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3637 | its value is -not- saved.\n\ |
3638 | This also records the currently selected frame, and FRAME's focus\n\ | |
3639 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3640 | (frame) |
3641 | Lisp_Object frame; | |
7ab12479 JB |
3642 | { |
3643 | register Lisp_Object tem; | |
3644 | register int n_windows; | |
3645 | register struct save_window_data *data; | |
da2792e0 | 3646 | register struct Lisp_Vector *vec; |
7ab12479 | 3647 | register int i; |
44fa5b1e | 3648 | FRAME_PTR f; |
43bad991 | 3649 | |
44fa5b1e JB |
3650 | if (NILP (frame)) |
3651 | f = selected_frame; | |
43bad991 JB |
3652 | else |
3653 | { | |
44fa5b1e JB |
3654 | CHECK_LIVE_FRAME (frame, 0); |
3655 | f = XFRAME (frame); | |
43bad991 | 3656 | } |
7ab12479 | 3657 | |
44fa5b1e | 3658 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3659 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3660 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3661 | vec->contents[i] = Qnil; | |
3662 | vec->size = VECSIZE (struct save_window_data); | |
3663 | data = (struct save_window_data *)vec; | |
3664 | ||
d834a2e9 KH |
3665 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3666 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3667 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
74112613 | 3668 | XSETFRAME (data->selected_frame, selected_frame); |
44fa5b1e | 3669 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3670 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3671 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3672 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3673 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3674 | XSETINT (data->min_height, window_min_height); |
3675 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3676 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3677 | data->saved_windows = tem; | |
3678 | for (i = 0; i < n_windows; i++) | |
3679 | XVECTOR (tem)->contents[i] | |
3680 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3681 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3682 | XVECTOR (tem), 0); |
74112613 | 3683 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3684 | return (tem); |
3685 | } | |
3686 | ||
3687 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3688 | 0, UNEVALLED, 0, | |
3689 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3690 | Restore which buffer appears in which window, where display starts,\n\ |
3691 | and the value of point and mark for each window.\n\ | |
3692 | Also restore which buffer is current.\n\ | |
3693 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3694 | Does not restore the value of point in current buffer.") |
3695 | (args) | |
3696 | Lisp_Object args; | |
3697 | { | |
3698 | register Lisp_Object val; | |
3699 | register int count = specpdl_ptr - specpdl; | |
3700 | ||
3701 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3702 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3703 | val = Fprogn (args); |
3704 | return unbind_to (count, val); | |
3705 | } | |
3706 | \f | |
cbff28e8 RS |
3707 | /* Return 1 if window configurations C1 and C2 |
3708 | describe the same state of affairs. This is used by Fequal. */ | |
3709 | ||
3710 | int | |
2f8274be | 3711 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 3712 | Lisp_Object c1, c2; |
2f8274be | 3713 | int ignore_positions; |
cbff28e8 RS |
3714 | { |
3715 | register struct save_window_data *d1, *d2; | |
3716 | struct Lisp_Vector *sw1, *sw2; | |
3717 | int i; | |
3718 | ||
3719 | d1 = (struct save_window_data *) XVECTOR (c1); | |
3720 | d2 = (struct save_window_data *) XVECTOR (c2); | |
3721 | sw1 = XVECTOR (d1->saved_windows); | |
3722 | sw2 = XVECTOR (d2->saved_windows); | |
3723 | ||
3724 | if (! EQ (d1->frame_width, d2->frame_width)) | |
3725 | return 0; | |
3726 | if (! EQ (d1->frame_height, d2->frame_height)) | |
3727 | return 0; | |
3728 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
3729 | return 0; | |
3730 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
3731 | return 0; | |
3732 | /* Don't compare the current_window field directly. | |
3733 | Instead see w1_is_current and w2_is_current, below. */ | |
3734 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
3735 | return 0; | |
2f8274be RS |
3736 | if (! ignore_positions) |
3737 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
3738 | return 0; | |
cbff28e8 RS |
3739 | /* Don't compare the root_window field. |
3740 | We don't require the two configurations | |
3741 | to use the same window object, | |
3742 | and the two root windows must be equivalent | |
3743 | if everything else compares equal. */ | |
3744 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
3745 | return 0; | |
3746 | if (! EQ (d1->min_width, d2->min_width)) | |
3747 | return 0; | |
3748 | if (! EQ (d1->min_height, d2->min_height)) | |
3749 | return 0; | |
3750 | ||
3751 | /* Verify that the two confis have the same number of windows. */ | |
3752 | if (sw1->size != sw2->size) | |
3753 | return 0; | |
3754 | ||
3755 | for (i = 0; i < sw1->size; i++) | |
3756 | { | |
3757 | struct saved_window *p1, *p2; | |
3758 | int w1_is_current, w2_is_current; | |
3759 | ||
3760 | p1 = SAVED_WINDOW_N (sw1, i); | |
3761 | p2 = SAVED_WINDOW_N (sw2, i); | |
3762 | ||
3763 | /* Verify that the current windows in the two | |
3764 | configurations correspond to each other. */ | |
3765 | w1_is_current = EQ (d1->current_window, p1->window); | |
3766 | w2_is_current = EQ (d2->current_window, p2->window); | |
3767 | ||
3768 | if (w1_is_current != w2_is_current) | |
3769 | return 0; | |
3770 | ||
3771 | /* Verify that the corresponding windows do match. */ | |
3772 | if (! EQ (p1->buffer, p2->buffer)) | |
3773 | return 0; | |
3774 | if (! EQ (p1->left, p2->left)) | |
3775 | return 0; | |
3776 | if (! EQ (p1->top, p2->top)) | |
3777 | return 0; | |
3778 | if (! EQ (p1->width, p2->width)) | |
3779 | return 0; | |
3780 | if (! EQ (p1->height, p2->height)) | |
3781 | return 0; | |
cbff28e8 RS |
3782 | if (! EQ (p1->display_table, p2->display_table)) |
3783 | return 0; | |
3784 | if (! EQ (p1->parent, p2->parent)) | |
3785 | return 0; | |
3786 | if (! EQ (p1->prev, p2->prev)) | |
3787 | return 0; | |
2f8274be RS |
3788 | if (! ignore_positions) |
3789 | { | |
3790 | if (! EQ (p1->hscroll, p2->hscroll)) | |
3791 | return 0; | |
3792 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) | |
3793 | return 0; | |
3794 | if (NILP (Fequal (p1->start, p2->start))) | |
3795 | return 0; | |
3796 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
3797 | return 0; | |
3798 | if (NILP (Fequal (p1->mark, p2->mark))) | |
3799 | return 0; | |
3800 | } | |
cbff28e8 RS |
3801 | } |
3802 | ||
3803 | return 1; | |
3804 | } | |
2f8274be RS |
3805 | |
3806 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
3807 | Scompare_window_configurations, 2, 2, 0, | |
3808 | "Compare two window configurations as regards the structure of windows.\n\ | |
3809 | This function ignores details such as the values of point and mark\n\ | |
3810 | and scrolling positions.") | |
3811 | (x, y) | |
3812 | Lisp_Object x, y; | |
3813 | { | |
3814 | if (compare_window_configurations (x, y, 1)) | |
3815 | return Qt; | |
3816 | return Qnil; | |
3817 | } | |
cbff28e8 | 3818 | \f |
dfcf069d | 3819 | void |
7ab12479 JB |
3820 | init_window_once () |
3821 | { | |
44fa5b1e | 3822 | selected_frame = make_terminal_frame (); |
bc6c324f | 3823 | XSETFRAME (Vterminal_frame, selected_frame); |
44fa5b1e JB |
3824 | minibuf_window = selected_frame->minibuffer_window; |
3825 | selected_window = selected_frame->selected_window; | |
3826 | last_nonminibuf_frame = selected_frame; | |
5b03d3c0 RS |
3827 | |
3828 | window_initialized = 1; | |
7ab12479 JB |
3829 | } |
3830 | ||
dfcf069d | 3831 | void |
7ab12479 JB |
3832 | syms_of_window () |
3833 | { | |
543f5fb1 RS |
3834 | staticpro (&Qwindow_configuration_change_hook); |
3835 | Qwindow_configuration_change_hook | |
3836 | = intern ("window-configuration-change-hook"); | |
3837 | ||
7ab12479 JB |
3838 | Qwindowp = intern ("windowp"); |
3839 | staticpro (&Qwindowp); | |
3840 | ||
806b4d9b JB |
3841 | Qwindow_live_p = intern ("window-live-p"); |
3842 | staticpro (&Qwindow_live_p); | |
605be8af | 3843 | |
2cccc823 | 3844 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
3845 | staticpro (&Qtemp_buffer_show_hook); |
3846 | ||
7ab12479 JB |
3847 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
3848 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3849 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
3850 | Used by `with-output-to-temp-buffer'.\n\ |
3851 | If this function is used, then it must do the entire job of showing\n\ | |
3852 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
3853 | Vtemp_buffer_show_function = Qnil; |
3854 | ||
3855 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3856 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3857 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3858 | that the currently selected window is not acceptable.\n\ | |
3859 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3860 | work using this function."); | |
3861 | Vdisplay_buffer_function = Qnil; | |
3862 | ||
7ab12479 JB |
3863 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3864 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3865 | Vminibuf_scroll_window = Qnil; | |
3866 | ||
3867 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3868 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3869 | Vother_window_scroll_buffer = Qnil; | |
3870 | ||
44fa5b1e | 3871 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3872 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3873 | pop_up_frames = 0; |
7ab12479 | 3874 | |
44fa5b1e | 3875 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3876 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3877 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3878 | \n\ |
44fa5b1e JB |
3879 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3880 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3881 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3882 | |
a90712c2 RS |
3883 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3884 | "*List of buffer names that should have their own special frames.\n\ | |
3885 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 3886 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 3887 | \n\ |
524580a4 RS |
3888 | An element of the list can be a list instead of just a string.\n\ |
3889 | There are two ways to use a list as an element:\n\ | |
3890 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
3891 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3892 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
3893 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
4caa7448 RS |
3894 | All this is done by the function found in `special-display-function'.\n\ |
3895 | \n\ | |
3896 | If this variable appears \"not to work\", because you add a name to it\n\ | |
3897 | but that buffer still appears in the selected window, look at the\n\ | |
3898 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
3899 | Those variables take precedence over this one."); | |
a90712c2 RS |
3900 | Vspecial_display_buffer_names = Qnil; |
3901 | ||
3902 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3903 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3904 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3905 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3906 | using `special-display-function'.\n\ |
3548e138 | 3907 | \n\ |
524580a4 RS |
3908 | An element of the list can be a list instead of just a string.\n\ |
3909 | There are two ways to use a list as an element:\n\ | |
3910 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
3911 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3912 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
3913 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
4caa7448 RS |
3914 | All this is done by the function found in `special-display-function'.\n\ |
3915 | \n\ | |
3916 | If this variable appears \"not to work\", because you add a regexp to it\n\ | |
3917 | but the matching buffers still appear in the selected window, look at the\n\ | |
3918 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
3919 | Those variables take precedence over this one."); | |
a90712c2 RS |
3920 | Vspecial_display_regexps = Qnil; |
3921 | ||
3922 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3923 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3924 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3925 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3926 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3927 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3928 | \n\ |
3929 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3930 | or matches a regexp in `special-display-regexps'."); | |
3931 | Vspecial_display_function = Qnil; | |
3932 | ||
855d8627 RS |
3933 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
3934 | "*List of buffer names that should appear in the selected window.\n\ | |
3935 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
3936 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 3937 | in some other window.\n\ |
855d8627 RS |
3938 | \n\ |
3939 | An element of the list can be a cons cell instead of just a string.\n\ | |
3940 | Then the car must be a string, which specifies the buffer name.\n\ | |
3941 | This is for compatibility with `special-display-buffer-names';\n\ | |
3942 | the cdr of the cons cell is ignored.\n\ | |
3943 | \n\ | |
3944 | See also `same-window-regexps'."); | |
3945 | Vsame_window_buffer_names = Qnil; | |
3946 | ||
3947 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
3948 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
3949 | If a buffer name matches one of these regexps, then displaying it\n\ | |
3950 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
3951 | in the selected window, rather than making it appear in some other window.\n\ | |
3952 | \n\ | |
3953 | An element of the list can be a cons cell instead of just a string.\n\ | |
3954 | Then the car must be a string, which specifies the buffer name.\n\ | |
3955 | This is for compatibility with `special-display-buffer-names';\n\ | |
3956 | the cdr of the cons cell is ignored.\n\ | |
3957 | \n\ | |
3958 | See also `same-window-buffer-names'."); | |
3959 | Vsame_window_regexps = Qnil; | |
3960 | ||
7ab12479 JB |
3961 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3962 | "*Non-nil means display-buffer should make new windows."); | |
3963 | pop_up_windows = 1; | |
3964 | ||
3965 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3966 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3967 | next_screen_context_lines = 2; | |
3968 | ||
3969 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3970 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3971 | If there is only one window, it is split regardless of this value."); | |
3972 | split_height_threshold = 500; | |
3973 | ||
3974 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3975 | "*Delete any window less than this tall (including its mode line)."); | |
3976 | window_min_height = 4; | |
3977 | ||
3978 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3979 | "*Delete any window less than this wide."); | |
3980 | window_min_width = 10; | |
3981 | ||
9317a85d RS |
3982 | DEFVAR_BOOL ("scroll-preserve-screen-position", |
3983 | &scroll_preserve_screen_position, | |
3984 | "*Nonzero means scroll commands move point to keep its screen line unchanged."); | |
3985 | scroll_preserve_screen_position = 0; | |
3986 | ||
543f5fb1 RS |
3987 | DEFVAR_LISP ("window-configuration-change-hook", |
3988 | &Vwindow_configuration_change_hook, | |
3989 | "Functions to call when window configuration changes.\n\ | |
e3e041eb | 3990 | The selected frame is the one whose configuration has changed."); |
543f5fb1 RS |
3991 | Vwindow_configuration_change_hook = Qnil; |
3992 | ||
7ab12479 JB |
3993 | defsubr (&Sselected_window); |
3994 | defsubr (&Sminibuffer_window); | |
3995 | defsubr (&Swindow_minibuffer_p); | |
3996 | defsubr (&Swindowp); | |
806b4d9b | 3997 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3998 | defsubr (&Spos_visible_in_window_p); |
3999 | defsubr (&Swindow_buffer); | |
4000 | defsubr (&Swindow_height); | |
4001 | defsubr (&Swindow_width); | |
4002 | defsubr (&Swindow_hscroll); | |
4003 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
4004 | defsubr (&Swindow_redisplay_end_trigger); |
4005 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 4006 | defsubr (&Swindow_edges); |
d5783c40 JB |
4007 | defsubr (&Scoordinates_in_window_p); |
4008 | defsubr (&Swindow_at); | |
7ab12479 JB |
4009 | defsubr (&Swindow_point); |
4010 | defsubr (&Swindow_start); | |
4011 | defsubr (&Swindow_end); | |
4012 | defsubr (&Sset_window_point); | |
4013 | defsubr (&Sset_window_start); | |
4014 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 4015 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
4016 | defsubr (&Swindow_display_table); |
4017 | defsubr (&Sset_window_display_table); | |
4018 | defsubr (&Snext_window); | |
4019 | defsubr (&Sprevious_window); | |
4020 | defsubr (&Sother_window); | |
4021 | defsubr (&Sget_lru_window); | |
4022 | defsubr (&Sget_largest_window); | |
4023 | defsubr (&Sget_buffer_window); | |
4024 | defsubr (&Sdelete_other_windows); | |
4025 | defsubr (&Sdelete_windows_on); | |
4026 | defsubr (&Sreplace_buffer_in_windows); | |
4027 | defsubr (&Sdelete_window); | |
4028 | defsubr (&Sset_window_buffer); | |
4029 | defsubr (&Sselect_window); | |
4628f7a4 EN |
4030 | defsubr (&Sspecial_display_p); |
4031 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
4032 | defsubr (&Sdisplay_buffer); |
4033 | defsubr (&Ssplit_window); | |
4034 | defsubr (&Senlarge_window); | |
4035 | defsubr (&Sshrink_window); | |
4036 | defsubr (&Sscroll_up); | |
4037 | defsubr (&Sscroll_down); | |
4038 | defsubr (&Sscroll_left); | |
4039 | defsubr (&Sscroll_right); | |
ccd0664b | 4040 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
4041 | defsubr (&Sscroll_other_window); |
4042 | defsubr (&Srecenter); | |
4043 | defsubr (&Smove_to_window_line); | |
4044 | defsubr (&Swindow_configuration_p); | |
4045 | defsubr (&Sset_window_configuration); | |
4046 | defsubr (&Scurrent_window_configuration); | |
4047 | defsubr (&Ssave_window_excursion); | |
2f8274be | 4048 | defsubr (&Scompare_window_configurations); |
7ab12479 JB |
4049 | } |
4050 | ||
dfcf069d | 4051 | void |
7ab12479 JB |
4052 | keys_of_window () |
4053 | { | |
4054 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
4055 | initial_define_key (control_x_map, '2', "split-window"); | |
4056 | initial_define_key (control_x_map, '0', "delete-window"); | |
4057 | initial_define_key (control_x_map, 'o', "other-window"); | |
4058 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
4059 | initial_define_key (control_x_map, '<', "scroll-left"); | |
4060 | initial_define_key (control_x_map, '>', "scroll-right"); | |
4061 | ||
4062 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
4063 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
4064 | initial_define_key (meta_map, 'v', "scroll-down"); | |
4065 | ||
4066 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
4067 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
4068 | } |