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 | 41 | |
b7354ddf RS |
42 | static Lisp_Object select_window_1 P_ ((Lisp_Object, int)); |
43 | ||
7ab12479 JB |
44 | /* This is the window in which the terminal's cursor should |
45 | be left when nothing is being done with it. This must | |
46 | always be a leaf window, and its buffer is selected by | |
47 | the top level editing loop at the end of each command. | |
48 | ||
49 | This value is always the same as | |
44fa5b1e | 50 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
51 | |
52 | Lisp_Object selected_window; | |
53 | ||
44fa5b1e | 54 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
55 | Note that you cannot test for minibufferness of an arbitrary window |
56 | by comparing against this; but you can test for minibufferness of | |
57 | the selected window. */ | |
58 | Lisp_Object minibuf_window; | |
59 | ||
60 | /* Non-nil means it is the window for C-M-v to scroll | |
61 | when the minibuffer is selected. */ | |
62 | Lisp_Object Vminibuf_scroll_window; | |
63 | ||
64 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
65 | Lisp_Object Vother_window_scroll_buffer; | |
66 | ||
7ab12479 JB |
67 | /* Non-nil means it's function to call to display temp buffers. */ |
68 | Lisp_Object Vtemp_buffer_show_function; | |
69 | ||
70 | /* If a window gets smaller than either of these, it is removed. */ | |
71 | int window_min_height; | |
72 | int window_min_width; | |
73 | ||
74 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
75 | int pop_up_windows; | |
76 | ||
44fa5b1e JB |
77 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
78 | int pop_up_frames; | |
7ab12479 JB |
79 | |
80 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 81 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
82 | |
83 | /* Function to call to handle Fdisplay_buffer. */ | |
84 | Lisp_Object Vdisplay_buffer_function; | |
85 | ||
a90712c2 RS |
86 | /* List of buffer *names* for buffers that should have their own frames. */ |
87 | Lisp_Object Vspecial_display_buffer_names; | |
88 | ||
89 | /* List of regexps for buffer names that should have their own frames. */ | |
90 | Lisp_Object Vspecial_display_regexps; | |
91 | ||
92 | /* Function to pop up a special frame. */ | |
93 | Lisp_Object Vspecial_display_function; | |
94 | ||
855d8627 RS |
95 | /* List of buffer *names* for buffers to appear in selected window. */ |
96 | Lisp_Object Vsame_window_buffer_names; | |
97 | ||
98 | /* List of regexps for buffer names to appear in selected window. */ | |
99 | Lisp_Object Vsame_window_regexps; | |
100 | ||
a58ec57d RS |
101 | /* Hook run at end of temp_output_buffer_show. */ |
102 | Lisp_Object Qtemp_buffer_show_hook; | |
103 | ||
37962e60 | 104 | /* Fdisplay_buffer always splits the largest window |
7ab12479 JB |
105 | if that window is more than this high. */ |
106 | int split_height_threshold; | |
107 | ||
108 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
109 | int next_screen_context_lines; | |
110 | ||
111 | /* Incremented for each window created. */ | |
112 | static int sequence_number; | |
113 | ||
5b03d3c0 RS |
114 | /* Nonzero after init_window_once has finished. */ |
115 | static int window_initialized; | |
116 | ||
543f5fb1 RS |
117 | /* Hook to run when window config changes. */ |
118 | Lisp_Object Qwindow_configuration_change_hook; | |
119 | Lisp_Object Vwindow_configuration_change_hook; | |
120 | ||
9317a85d RS |
121 | /* Nonzero means scroll commands try to put point |
122 | at the same screen height as previously. */ | |
123 | static int scroll_preserve_screen_position; | |
124 | ||
91a78190 | 125 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 126 | static int inhibit_frame_unsplittable; |
7d601aaa | 127 | |
7ab12479 | 128 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 | 129 | |
9317a85d RS |
130 | extern int scroll_margin; |
131 | ||
dba06815 | 132 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
133 | \f |
134 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
135 | "Returns t if OBJECT is a window.") |
136 | (object) | |
137 | Lisp_Object object; | |
7ab12479 | 138 | { |
413430c5 | 139 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
140 | } |
141 | ||
806b4d9b | 142 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
143 | "Returns t if OBJECT is a window which is currently visible.") |
144 | (object) | |
145 | Lisp_Object object; | |
605be8af | 146 | { |
413430c5 | 147 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
148 | } |
149 | ||
7ab12479 JB |
150 | Lisp_Object |
151 | make_window () | |
152 | { | |
cffec418 | 153 | Lisp_Object val; |
7ab12479 | 154 | register struct window *p; |
cffec418 KH |
155 | register struct Lisp_Vector *vec; |
156 | int i; | |
157 | ||
158 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
159 | for (i = 0; i < VECSIZE (struct window); i++) | |
160 | vec->contents[i] = Qnil; | |
161 | vec->size = VECSIZE (struct window); | |
162 | p = (struct window *)vec; | |
d834a2e9 KH |
163 | XSETFASTINT (p->sequence_number, ++sequence_number); |
164 | XSETFASTINT (p->left, 0); | |
165 | XSETFASTINT (p->top, 0); | |
166 | XSETFASTINT (p->height, 0); | |
167 | XSETFASTINT (p->width, 0); | |
168 | XSETFASTINT (p->hscroll, 0); | |
9d1ec831 | 169 | XSETFASTINT (p->last_point, 0); |
d834a2e9 KH |
170 | XSETFASTINT (p->last_point_x, 0); |
171 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
172 | p->start = Fmake_marker (); |
173 | p->pointm = Fmake_marker (); | |
d834a2e9 | 174 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 175 | p->frame = Qnil; |
7ab12479 JB |
176 | p->display_table = Qnil; |
177 | p->dedicated = Qnil; | |
cffec418 | 178 | XSETWINDOW (val, p); |
7ab12479 JB |
179 | return val; |
180 | } | |
181 | ||
182 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
183 | "Return the window that the cursor now appears in and commands apply to.") | |
184 | () | |
185 | { | |
186 | return selected_window; | |
187 | } | |
188 | ||
83762ba4 JB |
189 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
190 | "Return the window used now for minibuffers.\n\ | |
191 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
192 | used by that frame.") | |
193 | (frame) | |
194 | Lisp_Object frame; | |
7ab12479 | 195 | { |
83762ba4 | 196 | if (NILP (frame)) |
74112613 | 197 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
198 | else |
199 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 JB |
200 | |
201 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
202 | } |
203 | ||
605be8af | 204 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
205 | "Returns non-nil if WINDOW is a minibuffer window.") |
206 | (window) | |
207 | Lisp_Object window; | |
208 | { | |
209 | struct window *w = decode_window (window); | |
210 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
211 | } | |
212 | ||
213 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
214 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 215 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
216 | Returns nil if that position is scrolled vertically out of view.\n\ |
217 | POS defaults to point; WINDOW, to the selected window.") | |
218 | (pos, window) | |
219 | Lisp_Object pos, window; | |
220 | { | |
221 | register struct window *w; | |
222 | register int top; | |
223 | register int height; | |
224 | register int posint; | |
225 | register struct buffer *buf; | |
226 | struct position posval; | |
afdb2485 | 227 | int hscroll; |
7ab12479 | 228 | |
265a9e55 | 229 | if (NILP (pos)) |
5ce7b543 | 230 | posint = PT; |
7ab12479 JB |
231 | else |
232 | { | |
233 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
234 | posint = XINT (pos); | |
235 | } | |
236 | ||
605be8af | 237 | w = decode_window (window); |
7ab12479 | 238 | top = marker_position (w->start); |
afdb2485 | 239 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
240 | |
241 | if (posint < top) | |
242 | return Qnil; | |
243 | ||
244 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
245 | ||
246 | buf = XBUFFER (w->buffer); | |
3cd21523 RS |
247 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) |
248 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)) | |
7ab12479 | 249 | { |
44fa5b1e | 250 | /* If frame is up to date, |
7ab12479 JB |
251 | use the info recorded about how much text fit on it. */ |
252 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
253 | || (XFASTINT (w->window_end_vpos) < height)) | |
254 | return Qt; | |
255 | return Qnil; | |
256 | } | |
257 | else | |
258 | { | |
33eb4ede | 259 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
260 | return Qnil; |
261 | ||
61b5322b RS |
262 | /* w->start can be out of range. If it is, do something reasonable. */ |
263 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
264 | return Qnil; | |
265 | ||
7ab12479 | 266 | /* If that info is not correct, calculate afresh */ |
5a255667 KH |
267 | /* BUG FIX for the 7th arg (TOHPOS). |
268 | ||
269 | '0' is harmless, however, ' - (1 << (BITS_PER_SHORT - 1))' is | |
270 | more appropriate here. In case of HSCROLL > 0, this can avoid | |
271 | needless calculation done until (HPOS == 0). | |
272 | ||
273 | We want to determine if the position POSINT is in HEIGHT or | |
274 | not. We don't have to do calculation until (HPOS == 0). We | |
275 | can stop it when VPOS goes beyond HEIGHT. */ | |
4efffd80 | 276 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0, |
5a255667 | 277 | posint, height, - (1 << (BITS_PER_SHORT - 1)), |
535e0b8e | 278 | window_internal_width (w) - 1, |
e37f06d7 | 279 | hscroll, 0, w); |
7ab12479 JB |
280 | |
281 | return posval.vpos < height ? Qt : Qnil; | |
282 | } | |
283 | } | |
284 | \f | |
285 | static struct window * | |
286 | decode_window (window) | |
287 | register Lisp_Object window; | |
288 | { | |
265a9e55 | 289 | if (NILP (window)) |
7ab12479 JB |
290 | return XWINDOW (selected_window); |
291 | ||
605be8af | 292 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
293 | return XWINDOW (window); |
294 | } | |
295 | ||
296 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
297 | "Return the buffer that WINDOW is displaying.") | |
298 | (window) | |
299 | Lisp_Object window; | |
300 | { | |
301 | return decode_window (window)->buffer; | |
302 | } | |
303 | ||
304 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
305 | "Return the number of lines in WINDOW (including its mode line).") | |
306 | (window) | |
307 | Lisp_Object window; | |
308 | { | |
309 | return decode_window (window)->height; | |
310 | } | |
311 | ||
312 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
313 | "Return the number of display columns in WINDOW.\n\ |
314 | This is the width that is usable columns available for text in WINDOW.\n\ | |
315 | If you want to find out how many columns WINDOW takes up,\n\ | |
316 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
317 | (window) |
318 | Lisp_Object window; | |
319 | { | |
ee61d94e | 320 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
321 | } |
322 | ||
323 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
324 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
325 | (window) | |
326 | Lisp_Object window; | |
327 | { | |
328 | return decode_window (window)->hscroll; | |
329 | } | |
330 | ||
331 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
332 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
333 | NCOL should be zero or positive.") | |
334 | (window, ncol) | |
335 | register Lisp_Object window, ncol; | |
336 | { | |
337 | register struct window *w; | |
338 | ||
339 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 340 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 341 | w = decode_window (window); |
7f4161e0 | 342 | if (XINT (w->hscroll) != XINT (ncol)) |
1479ef51 | 343 | XBUFFER (w->buffer)->clip_changed = 1; /* Prevent redisplay shortcuts */ |
7ab12479 JB |
344 | w->hscroll = ncol; |
345 | return ncol; | |
346 | } | |
347 | ||
190eb263 RS |
348 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
349 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
350 | "Return WINDOW's redisplay end trigger value.\n\ | |
351 | See `set-window-redisplay-end-trigger' for more information.") | |
352 | (window) | |
353 | Lisp_Object window; | |
354 | { | |
355 | return decode_window (window)->redisplay_end_trigger; | |
356 | } | |
357 | ||
358 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
359 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
360 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
361 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
362 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
363 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
364 | with two arguments: WINDOW, and the end trigger value.\n\ | |
365 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
366 | (window, value) |
367 | register Lisp_Object window, value; | |
368 | { | |
369 | register struct window *w; | |
370 | ||
371 | w = decode_window (window); | |
372 | w->redisplay_end_trigger = value; | |
373 | return value; | |
374 | } | |
375 | ||
7ab12479 JB |
376 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
377 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 378 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
379 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
380 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
381 | and its mode-line.") | |
382 | (window) | |
383 | Lisp_Object window; | |
384 | { | |
385 | register struct window *w = decode_window (window); | |
386 | ||
387 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 388 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
389 | Fcons (make_number (XFASTINT (w->top) |
390 | + XFASTINT (w->height)), | |
391 | Qnil)))); | |
392 | } | |
393 | ||
d5783c40 JB |
394 | /* Test if the character at column *x, row *y is within window *w. |
395 | If it is not, return 0; | |
396 | if it is in the window's text area, | |
397 | set *x and *y to its location relative to the upper left corner | |
398 | of the window, and | |
399 | return 1; | |
400 | if it is on the window's modeline, return 2; | |
401 | if it is on the border between the window and its right sibling, | |
402 | return 3. */ | |
403 | static int | |
404 | coordinates_in_window (w, x, y) | |
405 | register struct window *w; | |
406 | register int *x, *y; | |
407 | { | |
408 | register int left = XINT (w->left); | |
111e5992 RS |
409 | register int right_edge = WINDOW_RIGHT_EDGE (w); |
410 | register int left_margin = WINDOW_LEFT_MARGIN (w); | |
411 | register int right_margin = WINDOW_RIGHT_MARGIN (w); | |
d5783c40 JB |
412 | register int window_height = XINT (w->height); |
413 | register int top = XFASTINT (w->top); | |
111e5992 RS |
414 | |
415 | if ( *x < left || *x >= right_edge | |
d5783c40 JB |
416 | || *y < top || *y >= top + window_height) |
417 | return 0; | |
418 | ||
111e5992 RS |
419 | if (left_margin != left && *x < left_margin && *x >= left) |
420 | return 3; | |
421 | ||
422 | if (right_margin != right_edge && *x >= right_margin && *x < right_edge) | |
423 | return 3; | |
424 | ||
d5783c40 JB |
425 | /* Is the character is the mode line? */ |
426 | if (*y == top + window_height - 1 | |
05c2896a | 427 | && ! MINI_WINDOW_P (w)) |
d5783c40 | 428 | return 2; |
37962e60 | 429 | |
111e5992 | 430 | *x -= WINDOW_LEFT_MARGIN (w); |
d5783c40 JB |
431 | *y -= top; |
432 | return 1; | |
433 | } | |
434 | ||
435 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
436 | Scoordinates_in_window_p, 2, 2, 0, | |
437 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 438 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 439 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 440 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 441 | frame.\n\ |
d5783c40 JB |
442 | If COORDINATES are in the text portion of WINDOW,\n\ |
443 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 444 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 445 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 446 | `vertical-line' is returned.") |
d5783c40 JB |
447 | (coordinates, window) |
448 | register Lisp_Object coordinates, window; | |
449 | { | |
450 | int x, y; | |
451 | ||
605be8af | 452 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
453 | CHECK_CONS (coordinates, 1); |
454 | x = XINT (Fcar (coordinates)); | |
455 | y = XINT (Fcdr (coordinates)); | |
456 | ||
457 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
458 | { | |
459 | case 0: /* NOT in window at all. */ | |
460 | return Qnil; | |
461 | ||
462 | case 1: /* In text part of window. */ | |
34c0dab2 | 463 | return Fcons (make_number (x), make_number (y)); |
d5783c40 JB |
464 | |
465 | case 2: /* In mode line of window. */ | |
466 | return Qmode_line; | |
37962e60 | 467 | |
d5783c40 | 468 | case 3: /* On right border of window. */ |
e5d77022 | 469 | return Qvertical_line; |
d5783c40 JB |
470 | |
471 | default: | |
472 | abort (); | |
473 | } | |
474 | } | |
475 | ||
7ab12479 | 476 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
477 | Lisp_Object. If x, y is on the window's modeline, set *part |
478 | to 1; if it is on the separating line between the window and its | |
479 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
480 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 481 | Lisp_Object |
44fa5b1e JB |
482 | window_from_coordinates (frame, x, y, part) |
483 | FRAME_PTR frame; | |
7ab12479 | 484 | int x, y; |
d5783c40 | 485 | int *part; |
7ab12479 JB |
486 | { |
487 | register Lisp_Object tem, first; | |
488 | ||
44fa5b1e | 489 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 490 | |
d5783c40 | 491 | do |
7ab12479 JB |
492 | { |
493 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
494 | ||
495 | if (found) | |
496 | { | |
d5783c40 | 497 | *part = found - 1; |
7ab12479 JB |
498 | return tem; |
499 | } | |
500 | ||
d5783c40 | 501 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 502 | } |
d5783c40 | 503 | while (! EQ (tem, first)); |
37962e60 | 504 | |
d5783c40 | 505 | return Qnil; |
7ab12479 JB |
506 | } |
507 | ||
ab17c3f2 | 508 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 509 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
510 | If omitted, FRAME defaults to the currently selected frame.\n\ |
511 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 512 | column 0.") |
b0c33a94 RS |
513 | (x, y, frame) |
514 | Lisp_Object x, y, frame; | |
7ab12479 JB |
515 | { |
516 | int part; | |
517 | ||
44fa5b1e | 518 | if (NILP (frame)) |
74112613 | 519 | XSETFRAME (frame, selected_frame); |
d5783c40 | 520 | else |
44fa5b1e | 521 | CHECK_LIVE_FRAME (frame, 2); |
b0c33a94 RS |
522 | CHECK_NUMBER (x, 0); |
523 | CHECK_NUMBER (y, 1); | |
7ab12479 | 524 | |
44fa5b1e | 525 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 526 | XINT (x), XINT (y), |
7ab12479 JB |
527 | &part); |
528 | } | |
529 | ||
530 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
531 | "Return current value of point in WINDOW.\n\ | |
532 | For a nonselected window, this is the value point would have\n\ | |
533 | if that window were selected.\n\ | |
534 | \n\ | |
535 | Note that, when WINDOW is the selected window and its buffer\n\ | |
536 | is also currently selected, the value returned is the same as (point).\n\ | |
537 | It would be more strictly correct to return the `top-level' value\n\ | |
538 | of point, outside of any save-excursion forms.\n\ | |
539 | But that is hard to define.") | |
540 | (window) | |
541 | Lisp_Object window; | |
542 | { | |
543 | register struct window *w = decode_window (window); | |
544 | ||
545 | if (w == XWINDOW (selected_window) | |
546 | && current_buffer == XBUFFER (w->buffer)) | |
547 | return Fpoint (); | |
548 | return Fmarker_position (w->pointm); | |
549 | } | |
550 | ||
551 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
552 | "Return position at which display currently starts in WINDOW.\n\ |
553 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
554 | (window) |
555 | Lisp_Object window; | |
556 | { | |
557 | return Fmarker_position (decode_window (window)->start); | |
558 | } | |
559 | ||
8646118f RS |
560 | /* This is text temporarily removed from the doc string below. |
561 | ||
7250968e RS |
562 | This function returns nil if the position is not currently known.\n\ |
563 | That happens when redisplay is preempted and doesn't finish.\n\ | |
564 | If in that case you want to compute where the end of the window would\n\ | |
565 | have been if redisplay had finished, do this:\n\ | |
566 | (save-excursion\n\ | |
567 | (goto-char (window-start window))\n\ | |
568 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
569 | (point))") */ |
570 | ||
478292ed | 571 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
8646118f RS |
572 | "Return position at which display currently ends in WINDOW.\n\ |
573 | This is updated by redisplay, when it runs to completion.\n\ | |
574 | Simply changing the buffer text or setting `window-start'\n\ | |
478292ed RS |
575 | does not update this value.\n\ |
576 | If UP-TO-DATE is non-nil, compute the up-to-date position\n\ | |
577 | if it isn't already recorded.") | |
578 | (window, update) | |
579 | Lisp_Object window, update; | |
7ab12479 JB |
580 | { |
581 | Lisp_Object value; | |
582 | struct window *w = decode_window (window); | |
5a41ab94 RS |
583 | Lisp_Object buf; |
584 | ||
585 | buf = w->buffer; | |
586 | CHECK_BUFFER (buf, 0); | |
587 | ||
8646118f | 588 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
589 | /* If we don't know the end position, return nil. |
590 | The user can compute it with vertical-motion if he wants to. | |
591 | It would be nicer to do it automatically, | |
592 | but that's so slow that it would probably bother people. */ | |
593 | if (NILP (w->window_end_valid)) | |
594 | return Qnil; | |
8646118f | 595 | #endif |
7250968e | 596 | |
478292ed RS |
597 | if (! NILP (update) |
598 | && ! (! NILP (w->window_end_valid) | |
599 | && XFASTINT (w->last_modified) >= MODIFF)) | |
600 | { | |
601 | int opoint = PT, opoint_byte = PT_BYTE; | |
602 | TEMP_SET_PT_BOTH (XMARKER (w->start)->charpos, | |
603 | XMARKER (w->start)->bytepos); | |
604 | Fvertical_motion (make_number (window_internal_height (w)), Qnil); | |
605 | XSETINT (value, PT); | |
606 | TEMP_SET_PT_BOTH (opoint, opoint_byte); | |
607 | } | |
608 | else | |
609 | XSETINT (value, | |
610 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
611 | |
612 | return value; | |
613 | } | |
614 | ||
615 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
616 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
617 | (window, pos) | |
618 | Lisp_Object window, pos; | |
619 | { | |
620 | register struct window *w = decode_window (window); | |
621 | ||
622 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
623 | if (w == XWINDOW (selected_window)) | |
624 | Fgoto_char (pos); | |
625 | else | |
626 | set_marker_restricted (w->pointm, pos, w->buffer); | |
627 | ||
628 | return pos; | |
629 | } | |
630 | ||
631 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
632 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
633 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
634 | from overriding motion of point in order to display at this exact start.") | |
635 | (window, pos, noforce) | |
636 | Lisp_Object window, pos, noforce; | |
637 | { | |
638 | register struct window *w = decode_window (window); | |
639 | ||
640 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
641 | set_marker_restricted (w->start, pos, w->buffer); | |
642 | /* this is not right, but much easier than doing what is right. */ | |
643 | w->start_at_line_beg = Qnil; | |
265a9e55 | 644 | if (NILP (noforce)) |
7ab12479 JB |
645 | w->force_start = Qt; |
646 | w->update_mode_line = Qt; | |
d834a2e9 | 647 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 648 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
649 | if (!EQ (window, selected_window)) |
650 | windows_or_buffers_changed++; | |
7ab12479 JB |
651 | return pos; |
652 | } | |
653 | ||
654 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
655 | 1, 1, 0, | |
656 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 657 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
658 | (window) |
659 | Lisp_Object window; | |
660 | { | |
661 | return decode_window (window)->dedicated; | |
662 | } | |
663 | ||
d207b766 RS |
664 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
665 | Sset_window_dedicated_p, 2, 2, 0, | |
666 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
667 | If it is dedicated, Emacs will not automatically change\n\ | |
668 | which buffer appears in it.\n\ | |
669 | The second argument is the new value for the dedication flag;\n\ | |
670 | non-nil means yes.") | |
7ab12479 JB |
671 | (window, arg) |
672 | Lisp_Object window, arg; | |
673 | { | |
674 | register struct window *w = decode_window (window); | |
675 | ||
265a9e55 | 676 | if (NILP (arg)) |
7ab12479 JB |
677 | w->dedicated = Qnil; |
678 | else | |
d207b766 | 679 | w->dedicated = Qt; |
7ab12479 JB |
680 | |
681 | return w->dedicated; | |
682 | } | |
683 | ||
684 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
685 | 0, 1, 0, | |
686 | "Return the display-table that WINDOW is using.") | |
687 | (window) | |
688 | Lisp_Object window; | |
689 | { | |
690 | return decode_window (window)->display_table; | |
691 | } | |
692 | ||
693 | /* Get the display table for use currently on window W. | |
694 | This is either W's display table or W's buffer's display table. | |
695 | Ignore the specified tables if they are not valid; | |
696 | if no valid table is specified, return 0. */ | |
697 | ||
319315f1 | 698 | struct Lisp_Char_Table * |
7ab12479 JB |
699 | window_display_table (w) |
700 | struct window *w; | |
701 | { | |
702 | Lisp_Object tem; | |
703 | tem = w->display_table; | |
319315f1 RS |
704 | if (DISP_TABLE_P (tem)) |
705 | return XCHAR_TABLE (tem); | |
171d003c RS |
706 | if (NILP (w->buffer)) |
707 | return 0; | |
708 | ||
7ab12479 | 709 | tem = XBUFFER (w->buffer)->display_table; |
319315f1 RS |
710 | if (DISP_TABLE_P (tem)) |
711 | return XCHAR_TABLE (tem); | |
7ab12479 | 712 | tem = Vstandard_display_table; |
319315f1 RS |
713 | if (DISP_TABLE_P (tem)) |
714 | return XCHAR_TABLE (tem); | |
7ab12479 JB |
715 | return 0; |
716 | } | |
717 | ||
3a2712f9 | 718 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
719 | "Set WINDOW's display-table to TABLE.") |
720 | (window, table) | |
721 | register Lisp_Object window, table; | |
722 | { | |
723 | register struct window *w; | |
724 | register Lisp_Object z; /* Return value. */ | |
725 | ||
726 | w = decode_window (window); | |
727 | w->display_table = table; | |
728 | return table; | |
729 | } | |
730 | \f | |
731 | /* Record info on buffer window w is displaying | |
732 | when it is about to cease to display that buffer. */ | |
dfcf069d | 733 | static void |
7ab12479 JB |
734 | unshow_buffer (w) |
735 | register struct window *w; | |
736 | { | |
12cae7c0 | 737 | Lisp_Object buf; |
b73ea88e | 738 | struct buffer *b; |
7ab12479 | 739 | |
12cae7c0 | 740 | buf = w->buffer; |
b73ea88e RS |
741 | b = XBUFFER (buf); |
742 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
743 | abort (); |
744 | ||
b73ea88e RS |
745 | if (w == XWINDOW (b->last_selected_window)) |
746 | b->last_selected_window = Qnil; | |
86e48436 | 747 | |
573f41ab | 748 | #if 0 |
7ab12479 JB |
749 | if (w == XWINDOW (selected_window) |
750 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
751 | /* Do this except when the selected window's buffer | |
752 | is being removed from some other window. */ | |
573f41ab RS |
753 | #endif |
754 | /* last_window_start records the start position that this buffer | |
755 | had in the last window to be disconnected from it. | |
756 | Now that this statement is unconditional, | |
757 | it is possible for the buffer to be displayed in the | |
758 | selected window, while last_window_start reflects another | |
759 | window which was recently showing the same buffer. | |
760 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 761 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
762 | |
763 | /* Point in the selected window's buffer | |
764 | is actually stored in that buffer, and the window's pointm isn't used. | |
765 | So don't clobber point in that buffer. */ | |
766 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
b73ea88e RS |
767 | temp_set_point_both (b, |
768 | clip_to_bounds (BUF_BEGV (b), | |
769 | XMARKER (w->pointm)->charpos, | |
770 | BUF_ZV (b)), | |
771 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
772 | marker_byte_position (w->pointm), | |
773 | BUF_ZV_BYTE (b))); | |
7ab12479 JB |
774 | } |
775 | ||
776 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 777 | static void |
7ab12479 JB |
778 | replace_window (old, replacement) |
779 | Lisp_Object old, replacement; | |
780 | { | |
781 | register Lisp_Object tem; | |
782 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
783 | ||
44fa5b1e JB |
784 | /* If OLD is its frame's root_window, then replacement is the new |
785 | root_window for that frame. */ | |
7ab12479 | 786 | |
7f4161e0 | 787 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 788 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
789 | |
790 | p->left = o->left; | |
791 | p->top = o->top; | |
792 | p->width = o->width; | |
793 | p->height = o->height; | |
794 | ||
795 | p->next = tem = o->next; | |
265a9e55 | 796 | if (!NILP (tem)) |
7ab12479 JB |
797 | XWINDOW (tem)->prev = replacement; |
798 | ||
799 | p->prev = tem = o->prev; | |
265a9e55 | 800 | if (!NILP (tem)) |
7ab12479 JB |
801 | XWINDOW (tem)->next = replacement; |
802 | ||
803 | p->parent = tem = o->parent; | |
265a9e55 | 804 | if (!NILP (tem)) |
7ab12479 JB |
805 | { |
806 | if (EQ (XWINDOW (tem)->vchild, old)) | |
807 | XWINDOW (tem)->vchild = replacement; | |
808 | if (EQ (XWINDOW (tem)->hchild, old)) | |
809 | XWINDOW (tem)->hchild = replacement; | |
810 | } | |
811 | ||
812 | /*** Here, if replacement is a vertical combination | |
813 | and so is its new parent, we should make replacement's | |
814 | children be children of that parent instead. ***/ | |
815 | } | |
816 | ||
817 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
818 | "Remove WINDOW from the display. Default is selected window.") | |
819 | (window) | |
820 | register Lisp_Object window; | |
543f5fb1 RS |
821 | { |
822 | delete_window (window); | |
823 | ||
824 | if (! NILP (Vwindow_configuration_change_hook) | |
825 | && ! NILP (Vrun_hooks)) | |
826 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
827 | ||
828 | return Qnil; | |
829 | } | |
830 | ||
5e14b1fc | 831 | void |
543f5fb1 RS |
832 | delete_window (window) |
833 | register Lisp_Object window; | |
7ab12479 JB |
834 | { |
835 | register Lisp_Object tem, parent, sib; | |
836 | register struct window *p; | |
837 | register struct window *par; | |
838 | ||
605be8af JB |
839 | /* Because this function is called by other C code on non-leaf |
840 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
841 | so we can't decode_window here. */ | |
265a9e55 | 842 | if (NILP (window)) |
7ab12479 JB |
843 | window = selected_window; |
844 | else | |
845 | CHECK_WINDOW (window, 0); | |
7ab12479 | 846 | p = XWINDOW (window); |
605be8af JB |
847 | |
848 | /* It's okay to delete an already-deleted window. */ | |
849 | if (NILP (p->buffer) | |
850 | && NILP (p->hchild) | |
851 | && NILP (p->vchild)) | |
296b535c | 852 | return; |
605be8af | 853 | |
7ab12479 | 854 | parent = p->parent; |
265a9e55 | 855 | if (NILP (parent)) |
7ab12479 JB |
856 | error ("Attempt to delete minibuffer or sole ordinary window"); |
857 | par = XWINDOW (parent); | |
858 | ||
859 | windows_or_buffers_changed++; | |
29aeee73 | 860 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; |
7ab12479 | 861 | |
605be8af JB |
862 | /* Are we trying to delete any frame's selected window? */ |
863 | { | |
0def0403 | 864 | Lisp_Object frame, pwindow; |
605be8af | 865 | |
0def0403 RS |
866 | /* See if the frame's selected window is either WINDOW |
867 | or any subwindow of it, by finding all that window's parents | |
868 | and comparing each one with WINDOW. */ | |
869 | frame = WINDOW_FRAME (XWINDOW (window)); | |
870 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
871 | ||
872 | while (!NILP (pwindow)) | |
873 | { | |
874 | if (EQ (window, pwindow)) | |
875 | break; | |
876 | pwindow = XWINDOW (pwindow)->parent; | |
877 | } | |
878 | ||
879 | if (EQ (window, pwindow)) | |
605be8af | 880 | { |
89bca612 RS |
881 | Lisp_Object alternative; |
882 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
883 | |
884 | /* If we're about to delete the selected window on the | |
885 | selected frame, then we should use Fselect_window to select | |
886 | the new window. On the other hand, if we're about to | |
887 | delete the selected window on any other frame, we shouldn't do | |
888 | anything but set the frame's selected_window slot. */ | |
889 | if (EQ (window, selected_window)) | |
890 | Fselect_window (alternative); | |
891 | else | |
0def0403 | 892 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
893 | } |
894 | } | |
7ab12479 JB |
895 | |
896 | tem = p->buffer; | |
897 | /* tem is null for dummy parent windows | |
898 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 899 | if (!NILP (tem)) |
7ab12479 JB |
900 | { |
901 | unshow_buffer (p); | |
902 | unchain_marker (p->pointm); | |
903 | unchain_marker (p->start); | |
7ab12479 JB |
904 | } |
905 | ||
906 | tem = p->next; | |
265a9e55 | 907 | if (!NILP (tem)) |
7ab12479 JB |
908 | XWINDOW (tem)->prev = p->prev; |
909 | ||
910 | tem = p->prev; | |
265a9e55 | 911 | if (!NILP (tem)) |
7ab12479 JB |
912 | XWINDOW (tem)->next = p->next; |
913 | ||
914 | if (EQ (window, par->hchild)) | |
915 | par->hchild = p->next; | |
916 | if (EQ (window, par->vchild)) | |
917 | par->vchild = p->next; | |
918 | ||
919 | /* Find one of our siblings to give our space to. */ | |
920 | sib = p->prev; | |
265a9e55 | 921 | if (NILP (sib)) |
7ab12479 JB |
922 | { |
923 | /* If p gives its space to its next sibling, that sibling needs | |
924 | to have its top/left side pulled back to where p's is. | |
925 | set_window_{height,width} will re-position the sibling's | |
926 | children. */ | |
927 | sib = p->next; | |
7f4161e0 JB |
928 | XWINDOW (sib)->top = p->top; |
929 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
930 | } |
931 | ||
932 | /* Stretch that sibling. */ | |
265a9e55 | 933 | if (!NILP (par->vchild)) |
7ab12479 JB |
934 | set_window_height (sib, |
935 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
936 | 1); | |
265a9e55 | 937 | if (!NILP (par->hchild)) |
7ab12479 JB |
938 | set_window_width (sib, |
939 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
940 | 1); | |
941 | ||
942 | /* If parent now has only one child, | |
943 | put the child into the parent's place. */ | |
7ab12479 | 944 | tem = par->hchild; |
265a9e55 | 945 | if (NILP (tem)) |
7ab12479 | 946 | tem = par->vchild; |
265a9e55 | 947 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 948 | replace_window (parent, tem); |
605be8af JB |
949 | |
950 | /* Since we may be deleting combination windows, we must make sure that | |
951 | not only p but all its children have been marked as deleted. */ | |
952 | if (! NILP (p->hchild)) | |
953 | delete_all_subwindows (XWINDOW (p->hchild)); | |
954 | else if (! NILP (p->vchild)) | |
955 | delete_all_subwindows (XWINDOW (p->vchild)); | |
956 | ||
957 | /* Mark this window as deleted. */ | |
958 | p->buffer = p->hchild = p->vchild = Qnil; | |
7ab12479 JB |
959 | } |
960 | \f | |
7ab12479 | 961 | |
44fa5b1e | 962 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 963 | |
26f6279d JB |
964 | /* This comment supplies the doc string for `next-window', |
965 | for make-docfile to see. We cannot put this in the real DEFUN | |
966 | due to limits in the Unix cpp. | |
967 | ||
968 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 969 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
970 | If omitted, WINDOW defaults to the selected window.\n\ |
971 | \n\ | |
972 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
973 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
974 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
975 | minibuffer even if it is active.\n\ | |
976 | \n\ | |
44fa5b1e JB |
977 | Several frames may share a single minibuffer; if the minibuffer\n\ |
978 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 979 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
980 | set of windows even when the minibuffer is on another frame. If the\n\ |
981 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 982 | \n\ |
44fa5b1e JB |
983 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
984 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 985 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 986 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 987 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 988 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
989 | \n\ |
990 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
991 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
992 | windows, eventually ending up back at the window you started with.\n\ | |
993 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
994 | (window, minibuf, all_frames) */ |
995 | ||
996 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
997 | 0) | |
44fa5b1e JB |
998 | (window, minibuf, all_frames) |
999 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1000 | { |
1001 | register Lisp_Object tem; | |
d5783c40 | 1002 | Lisp_Object start_window; |
7ab12479 | 1003 | |
265a9e55 | 1004 | if (NILP (window)) |
7ab12479 JB |
1005 | window = selected_window; |
1006 | else | |
605be8af | 1007 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1008 | |
d5783c40 JB |
1009 | start_window = window; |
1010 | ||
1011 | /* minibuf == nil may or may not include minibuffers. | |
1012 | Decide if it does. */ | |
265a9e55 | 1013 | if (NILP (minibuf)) |
fbdc1545 RS |
1014 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1015 | else if (! EQ (minibuf, Qt)) | |
1016 | minibuf = Qlambda; | |
1017 | /* Now minibuf can be t => count all minibuffer windows, | |
1018 | lambda => count none of them, | |
1019 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1020 | |
1bb80f72 | 1021 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e | 1022 | if (NILP (all_frames)) |
fbdc1545 | 1023 | all_frames = (! EQ (minibuf, Qlambda) |
1bb80f72 RS |
1024 | ? (FRAME_MINIBUF_WINDOW |
1025 | (XFRAME | |
1026 | (WINDOW_FRAME | |
1027 | (XWINDOW (window))))) | |
1028 | : Qnil); | |
89bca612 RS |
1029 | else if (EQ (all_frames, Qvisible)) |
1030 | ; | |
f812f9c6 RS |
1031 | else if (XFASTINT (all_frames) == 0) |
1032 | ; | |
1f4c5d09 RS |
1033 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1034 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1035 | return the first window on the frame. */ | |
1036 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1037 | else if (! EQ (all_frames, Qt)) |
1038 | all_frames = Qnil; | |
644b477c RS |
1039 | /* Now all_frames is t meaning search all frames, |
1040 | nil meaning search just current frame, | |
f812f9c6 RS |
1041 | visible meaning search just visible frames, |
1042 | 0 meaning search visible and iconified frames, | |
644b477c | 1043 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1044 | |
1045 | /* Do this loop at least once, to get the next window, and perhaps | |
1046 | again, if we hit the minibuffer and that is not acceptable. */ | |
1047 | do | |
1048 | { | |
1049 | /* Find a window that actually has a next one. This loop | |
1050 | climbs up the tree. */ | |
265a9e55 JB |
1051 | while (tem = XWINDOW (window)->next, NILP (tem)) |
1052 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1053 | window = tem; |
d5783c40 | 1054 | else |
7ab12479 | 1055 | { |
44fa5b1e JB |
1056 | /* We've reached the end of this frame. |
1057 | Which other frames are acceptable? */ | |
1058 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1059 | if (! NILP (all_frames)) |
1bb80f72 RS |
1060 | { |
1061 | Lisp_Object tem1; | |
1062 | ||
1063 | tem1 = tem; | |
1064 | tem = next_frame (tem, all_frames); | |
1065 | /* In the case where the minibuffer is active, | |
1066 | and we include its frame as well as the selected one, | |
1067 | next_frame may get stuck in that frame. | |
1068 | If that happens, go back to the selected frame | |
1069 | so we can complete the cycle. */ | |
1070 | if (EQ (tem, tem1)) | |
74112613 | 1071 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1072 | } |
44fa5b1e | 1073 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1074 | |
7ab12479 JB |
1075 | break; |
1076 | } | |
1077 | ||
1078 | window = tem; | |
d5783c40 | 1079 | |
7ab12479 JB |
1080 | /* If we're in a combination window, find its first child and |
1081 | recurse on that. Otherwise, we've found the window we want. */ | |
1082 | while (1) | |
1083 | { | |
265a9e55 | 1084 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1085 | window = XWINDOW (window)->hchild; |
265a9e55 | 1086 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1087 | window = XWINDOW (window)->vchild; |
1088 | else break; | |
1089 | } | |
1090 | } | |
5c4d25a6 | 1091 | /* Which windows are acceptable? |
d5783c40 | 1092 | Exit the loop and accept this window if |
fbdc1545 RS |
1093 | this isn't a minibuffer window, |
1094 | or we're accepting all minibuffer windows, | |
1095 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1096 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1097 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1098 | && ! EQ (minibuf, Qt) |
fbdc1545 | 1099 | && ! EQ (minibuf, window) |
7f4161e0 | 1100 | && ! EQ (window, start_window)); |
7ab12479 JB |
1101 | |
1102 | return window; | |
1103 | } | |
1104 | ||
26f6279d JB |
1105 | /* This comment supplies the doc string for `previous-window', |
1106 | for make-docfile to see. We cannot put this in the real DEFUN | |
1107 | due to limits in the Unix cpp. | |
1108 | ||
1109 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1110 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1111 | If omitted, WINDOW defaults to the selected window.\n\ |
1112 | \n\ | |
1113 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1114 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1115 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1116 | minibuffer even if it is active.\n\ | |
1117 | \n\ | |
44fa5b1e JB |
1118 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1119 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1120 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1121 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1122 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1123 | \n\ |
44fa5b1e JB |
1124 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1125 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1126 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1127 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1128 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1129 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1130 | \n\ |
1131 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1132 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1133 | windows, eventually ending up back at the window you started with.\n\ | |
1134 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1135 | (window, minibuf, all_frames) */ |
1136 | ||
1137 | ||
1138 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1139 | 0) | |
44fa5b1e JB |
1140 | (window, minibuf, all_frames) |
1141 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1142 | { |
1143 | register Lisp_Object tem; | |
d5783c40 | 1144 | Lisp_Object start_window; |
7ab12479 | 1145 | |
265a9e55 | 1146 | if (NILP (window)) |
7ab12479 JB |
1147 | window = selected_window; |
1148 | else | |
605be8af | 1149 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1150 | |
d5783c40 JB |
1151 | start_window = window; |
1152 | ||
1153 | /* minibuf == nil may or may not include minibuffers. | |
1154 | Decide if it does. */ | |
265a9e55 | 1155 | if (NILP (minibuf)) |
fbdc1545 RS |
1156 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1157 | else if (! EQ (minibuf, Qt)) | |
1158 | minibuf = Qlambda; | |
1159 | /* Now minibuf can be t => count all minibuffer windows, | |
1160 | lambda => count none of them, | |
1161 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1162 | |
44fa5b1e JB |
1163 | /* all_frames == nil doesn't specify which frames to include. |
1164 | Decide which frames it includes. */ | |
1165 | if (NILP (all_frames)) | |
fbdc1545 | 1166 | all_frames = (! EQ (minibuf, Qlambda) |
44fa5b1e JB |
1167 | ? (FRAME_MINIBUF_WINDOW |
1168 | (XFRAME | |
1169 | (WINDOW_FRAME | |
d5783c40 JB |
1170 | (XWINDOW (window))))) |
1171 | : Qnil); | |
89bca612 RS |
1172 | else if (EQ (all_frames, Qvisible)) |
1173 | ; | |
f812f9c6 RS |
1174 | else if (XFASTINT (all_frames) == 0) |
1175 | ; | |
1f4c5d09 RS |
1176 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1177 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1178 | return the first window on the frame. */ | |
1179 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1180 | else if (! EQ (all_frames, Qt)) |
1181 | all_frames = Qnil; | |
644b477c RS |
1182 | /* Now all_frames is t meaning search all frames, |
1183 | nil meaning search just current frame, | |
f812f9c6 RS |
1184 | visible meaning search just visible frames, |
1185 | 0 meaning search visible and iconified frames, | |
644b477c | 1186 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1187 | |
1188 | /* Do this loop at least once, to get the previous window, and perhaps | |
1189 | again, if we hit the minibuffer and that is not acceptable. */ | |
1190 | do | |
1191 | { | |
1192 | /* Find a window that actually has a previous one. This loop | |
1193 | climbs up the tree. */ | |
265a9e55 JB |
1194 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1195 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1196 | window = tem; |
d5783c40 | 1197 | else |
7ab12479 | 1198 | { |
44fa5b1e JB |
1199 | /* We have found the top window on the frame. |
1200 | Which frames are acceptable? */ | |
1201 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1202 | if (! NILP (all_frames)) |
dbc4e1c1 JB |
1203 | /* It's actually important that we use prev_frame here, |
1204 | rather than next_frame. All the windows acceptable | |
1205 | according to the given parameters should form a ring; | |
1206 | Fnext_window and Fprevious_window should go back and | |
1207 | forth around the ring. If we use next_frame here, | |
1208 | then Fnext_window and Fprevious_window take different | |
1209 | paths through the set of acceptable windows. | |
1210 | window_loop assumes that these `ring' requirement are | |
1211 | met. */ | |
1bb80f72 RS |
1212 | { |
1213 | Lisp_Object tem1; | |
1214 | ||
1215 | tem1 = tem; | |
1216 | tem = prev_frame (tem, all_frames); | |
1217 | /* In the case where the minibuffer is active, | |
1218 | and we include its frame as well as the selected one, | |
1219 | next_frame may get stuck in that frame. | |
1220 | If that happens, go back to the selected frame | |
1221 | so we can complete the cycle. */ | |
1222 | if (EQ (tem, tem1)) | |
74112613 | 1223 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1224 | } |
644b477c RS |
1225 | /* If this frame has a minibuffer, find that window first, |
1226 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1227 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1228 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1229 | else | |
644b477c | 1230 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1231 | |
7ab12479 JB |
1232 | break; |
1233 | } | |
1234 | ||
1235 | window = tem; | |
1236 | /* If we're in a combination window, find its last child and | |
1237 | recurse on that. Otherwise, we've found the window we want. */ | |
1238 | while (1) | |
1239 | { | |
265a9e55 | 1240 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1241 | window = XWINDOW (window)->hchild; |
265a9e55 | 1242 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1243 | window = XWINDOW (window)->vchild; |
1244 | else break; | |
265a9e55 | 1245 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1246 | window = tem; |
1247 | } | |
1248 | } | |
5c4d25a6 | 1249 | /* Which windows are acceptable? |
d5783c40 | 1250 | Exit the loop and accept this window if |
fbdc1545 RS |
1251 | this isn't a minibuffer window, |
1252 | or we're accepting all minibuffer windows, | |
1253 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1254 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1255 | while (MINI_WINDOW_P (XWINDOW (window)) |
fbdc1545 RS |
1256 | && ! EQ (minibuf, Qt) |
1257 | && ! EQ (minibuf, window) | |
1258 | && ! EQ (window, start_window)); | |
7ab12479 JB |
1259 | |
1260 | return window; | |
1261 | } | |
1262 | ||
62c07cc7 | 1263 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1264 | "Select the ARG'th different window on this frame.\n\ |
1265 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1266 | This command selects the window ARG steps away in that order.\n\ |
1267 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1268 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 EN |
1269 | (arg, all_frames) |
1270 | register Lisp_Object arg, all_frames; | |
7ab12479 JB |
1271 | { |
1272 | register int i; | |
1273 | register Lisp_Object w; | |
1274 | ||
413430c5 | 1275 | CHECK_NUMBER (arg, 0); |
7ab12479 | 1276 | w = selected_window; |
413430c5 | 1277 | i = XINT (arg); |
7ab12479 JB |
1278 | |
1279 | while (i > 0) | |
1280 | { | |
44fa5b1e | 1281 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1282 | i--; |
1283 | } | |
1284 | while (i < 0) | |
1285 | { | |
44fa5b1e | 1286 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1287 | i++; |
1288 | } | |
1289 | Fselect_window (w); | |
1290 | return Qnil; | |
1291 | } | |
1292 | \f | |
1293 | /* Look at all windows, performing an operation specified by TYPE | |
1294 | with argument OBJ. | |
75d8f668 | 1295 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1296 | Qnil, look at just the selected frame; |
89bca612 | 1297 | Qvisible, look at visible frames; |
75d8f668 | 1298 | a frame, just look at windows on that frame. |
7ab12479 JB |
1299 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1300 | */ | |
1301 | ||
1302 | enum window_loop | |
1303 | { | |
1304 | WINDOW_LOOP_UNUSED, | |
1305 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1306 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1307 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1308 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1309 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1310 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1311 | }; |
1312 | ||
1313 | static Lisp_Object | |
44fa5b1e | 1314 | window_loop (type, obj, mini, frames) |
7ab12479 | 1315 | enum window_loop type; |
44fa5b1e | 1316 | register Lisp_Object obj, frames; |
7ab12479 JB |
1317 | int mini; |
1318 | { | |
1319 | register Lisp_Object w; | |
1320 | register Lisp_Object best_window; | |
1321 | register Lisp_Object next_window; | |
4b206065 | 1322 | register Lisp_Object last_window; |
44fa5b1e | 1323 | FRAME_PTR frame; |
89bca612 RS |
1324 | Lisp_Object frame_arg; |
1325 | frame_arg = Qt; | |
44fa5b1e JB |
1326 | |
1327 | /* If we're only looping through windows on a particular frame, | |
1328 | frame points to that frame. If we're looping through windows | |
1329 | on all frames, frame is 0. */ | |
1330 | if (FRAMEP (frames)) | |
1331 | frame = XFRAME (frames); | |
1332 | else if (NILP (frames)) | |
1333 | frame = selected_frame; | |
7ab12479 | 1334 | else |
44fa5b1e | 1335 | frame = 0; |
89bca612 RS |
1336 | if (frame) |
1337 | frame_arg = Qlambda; | |
f812f9c6 RS |
1338 | else if (XFASTINT (frames) == 0) |
1339 | frame_arg = frames; | |
89bca612 RS |
1340 | else if (EQ (frames, Qvisible)) |
1341 | frame_arg = frames; | |
7ab12479 | 1342 | |
89bca612 RS |
1343 | /* frame_arg is Qlambda to stick to one frame, |
1344 | Qvisible to consider all visible frames, | |
1345 | or Qt otherwise. */ | |
1346 | ||
7ab12479 | 1347 | /* Pick a window to start with. */ |
017b2bad | 1348 | if (WINDOWP (obj)) |
4b206065 | 1349 | w = obj; |
44fa5b1e | 1350 | else if (frame) |
4b206065 | 1351 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1352 | else |
4b206065 JB |
1353 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1354 | ||
1355 | /* Figure out the last window we're going to mess with. Since | |
1356 | Fnext_window, given the same options, is guaranteed to go in a | |
1357 | ring, we can just use Fprevious_window to find the last one. | |
1358 | ||
1359 | We can't just wait until we hit the first window again, because | |
1360 | it might be deleted. */ | |
1361 | ||
89bca612 | 1362 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1363 | |
7ab12479 | 1364 | best_window = Qnil; |
4b206065 | 1365 | for (;;) |
7ab12479 | 1366 | { |
75d8f668 JB |
1367 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1368 | ||
7ab12479 JB |
1369 | /* Pick the next window now, since some operations will delete |
1370 | the current window. */ | |
89bca612 | 1371 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1372 | |
d29a5631 RS |
1373 | /* Note that we do not pay attention here to whether |
1374 | the frame is visible, since Fnext_window skips non-visible frames | |
1375 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1376 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1377 | || (mini && minibuf_level > 0)) |
1378 | switch (type) | |
1379 | { | |
1380 | case GET_BUFFER_WINDOW: | |
5c204627 RS |
1381 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj) |
1382 | /* Don't find any minibuffer window | |
1383 | except the one that is currently in use. */ | |
1384 | && (MINI_WINDOW_P (XWINDOW (w)) | |
1385 | ? EQ (w, minibuf_window) : 1)) | |
7ab12479 JB |
1386 | return w; |
1387 | break; | |
1388 | ||
1389 | case GET_LRU_WINDOW: | |
1390 | /* t as arg means consider only full-width windows */ | |
111e5992 | 1391 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w))) |
7ab12479 | 1392 | break; |
7ab12479 JB |
1393 | /* Ignore dedicated windows and minibuffers. */ |
1394 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1395 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1396 | break; |
265a9e55 | 1397 | if (NILP (best_window) |
7ab12479 JB |
1398 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1399 | > XFASTINT (XWINDOW (w)->use_time))) | |
1400 | best_window = w; | |
1401 | break; | |
1402 | ||
1403 | case DELETE_OTHER_WINDOWS: | |
1404 | if (XWINDOW (w) != XWINDOW (obj)) | |
1405 | Fdelete_window (w); | |
1406 | break; | |
1407 | ||
1408 | case DELETE_BUFFER_WINDOWS: | |
1409 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1410 | { | |
3548e138 RS |
1411 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1412 | ||
1413 | /* If this window is dedicated, and in a frame of its own, | |
1414 | kill the frame. */ | |
1415 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1416 | && !NILP (XWINDOW (w)->dedicated) | |
1417 | && other_visible_frames (f)) | |
7ab12479 | 1418 | { |
3548e138 RS |
1419 | /* Skip the other windows on this frame. |
1420 | There might be one, the minibuffer! */ | |
1421 | if (! EQ (w, last_window)) | |
1422 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1423 | { | |
1424 | /* As we go, check for the end of the loop. | |
1425 | We mustn't start going around a second time. */ | |
1426 | if (EQ (next_window, last_window)) | |
1427 | { | |
1428 | last_window = w; | |
1429 | break; | |
1430 | } | |
1431 | next_window = Fnext_window (next_window, | |
1432 | mini ? Qt : Qnil, | |
1433 | frame_arg); | |
1434 | } | |
1435 | /* Now we can safely delete the frame. */ | |
1436 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1437 | } |
1438 | else | |
3548e138 RS |
1439 | /* If we're deleting the buffer displayed in the only window |
1440 | on the frame, find a new buffer to display there. */ | |
1441 | if (NILP (XWINDOW (w)->parent)) | |
1442 | { | |
1443 | Lisp_Object new_buffer; | |
b7354ddf RS |
1444 | new_buffer = Fother_buffer (obj, Qnil, |
1445 | XWINDOW (w)->frame); | |
3548e138 RS |
1446 | if (NILP (new_buffer)) |
1447 | new_buffer | |
1448 | = Fget_buffer_create (build_string ("*scratch*")); | |
1449 | Fset_window_buffer (w, new_buffer); | |
1450 | if (EQ (w, selected_window)) | |
1451 | Fset_buffer (XWINDOW (w)->buffer); | |
1452 | } | |
1453 | else | |
1454 | Fdelete_window (w); | |
7ab12479 JB |
1455 | } |
1456 | break; | |
1457 | ||
1458 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1459 | /* Ignore dedicated windows and minibuffers. */ |
1460 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1461 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1462 | break; |
1463 | { | |
1464 | struct window *best_window_ptr = XWINDOW (best_window); | |
1465 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1466 | if (NILP (best_window) |
1467 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1468 | > (XFASTINT (best_window_ptr->height) | |
1469 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1470 | best_window = w; |
1471 | } | |
1472 | break; | |
1473 | ||
1474 | case UNSHOW_BUFFER: | |
1475 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1476 | { | |
1477 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1478 | Lisp_Object another_buffer; |
38ab08d1 | 1479 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
b7354ddf | 1480 | another_buffer = Fother_buffer (obj, Qnil, XWINDOW (w)->frame); |
265a9e55 | 1481 | if (NILP (another_buffer)) |
7ab12479 JB |
1482 | another_buffer |
1483 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1484 | /* If this window is dedicated, and in a frame of its own, |
1485 | kill the frame. */ | |
1486 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1487 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1488 | && other_visible_frames (f)) |
45945a7b RS |
1489 | { |
1490 | /* Skip the other windows on this frame. | |
1491 | There might be one, the minibuffer! */ | |
1492 | if (! EQ (w, last_window)) | |
1493 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1494 | { | |
1495 | /* As we go, check for the end of the loop. | |
1496 | We mustn't start going around a second time. */ | |
1497 | if (EQ (next_window, last_window)) | |
1498 | { | |
1499 | last_window = w; | |
1500 | break; | |
1501 | } | |
1502 | next_window = Fnext_window (next_window, | |
1503 | mini ? Qt : Qnil, | |
1504 | frame_arg); | |
1505 | } | |
1506 | /* Now we can safely delete the frame. */ | |
1507 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1508 | } | |
38ab08d1 | 1509 | else |
38ab08d1 RS |
1510 | { |
1511 | /* Otherwise show a different buffer in the window. */ | |
1512 | XWINDOW (w)->dedicated = Qnil; | |
1513 | Fset_window_buffer (w, another_buffer); | |
1514 | if (EQ (w, selected_window)) | |
1515 | Fset_buffer (XWINDOW (w)->buffer); | |
1516 | } | |
7ab12479 JB |
1517 | } |
1518 | break; | |
1519 | } | |
4b206065 JB |
1520 | |
1521 | if (EQ (w, last_window)) | |
1522 | break; | |
1523 | ||
7ab12479 JB |
1524 | w = next_window; |
1525 | } | |
7ab12479 JB |
1526 | |
1527 | return best_window; | |
37962e60 | 1528 | } |
605be8af | 1529 | |
7ab12479 JB |
1530 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1531 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1532 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1533 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1534 | If FRAME is t, search all frames.\n\ |
1535 | If FRAME is nil, search only the selected frame.\n\ | |
1536 | If FRAME is a frame, search only that frame.") | |
1537 | (frame) | |
1538 | Lisp_Object frame; | |
7ab12479 JB |
1539 | { |
1540 | register Lisp_Object w; | |
1541 | /* First try for a window that is full-width */ | |
89bca612 | 1542 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1543 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1544 | return w; |
1545 | /* If none of them, try the rest */ | |
89bca612 | 1546 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1547 | } |
1548 | ||
1549 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1550 | "Return the largest window in area.\n\ | |
89bca612 | 1551 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1552 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1553 | If FRAME is t, search all frames.\n\ |
1554 | If FRAME is nil, search only the selected frame.\n\ | |
1555 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1556 | (frame) |
1557 | Lisp_Object frame; | |
7ab12479 JB |
1558 | { |
1559 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1560 | frame); |
7ab12479 JB |
1561 | } |
1562 | ||
1563 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1564 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1565 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1566 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1567 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1568 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1569 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1570 | (buffer, frame) |
1571 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1572 | { |
1573 | buffer = Fget_buffer (buffer); | |
017b2bad | 1574 | if (BUFFERP (buffer)) |
44fa5b1e | 1575 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1576 | else |
1577 | return Qnil; | |
1578 | } | |
1579 | ||
1580 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1581 | 0, 1, "", | |
44fa5b1e | 1582 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1583 | Only the frame WINDOW is on is affected.\n\ |
1584 | This function tries to reduce display jumps\n\ | |
1585 | by keeping the text previously visible in WINDOW\n\ | |
1586 | in the same place on the frame. Doing this depends on\n\ | |
1587 | the value of (window-start WINDOW), so if calling this function\n\ | |
1588 | in a program gives strange scrolling, make sure the window-start\n\ | |
1589 | value is reasonable when this function is called.") | |
7ab12479 JB |
1590 | (window) |
1591 | Lisp_Object window; | |
1592 | { | |
1593 | struct window *w; | |
00d3d838 | 1594 | int startpos; |
7ab12479 JB |
1595 | int top; |
1596 | ||
265a9e55 | 1597 | if (NILP (window)) |
7ab12479 JB |
1598 | window = selected_window; |
1599 | else | |
605be8af | 1600 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1601 | |
1602 | w = XWINDOW (window); | |
a2b38b3c | 1603 | |
00d3d838 KH |
1604 | startpos = marker_position (w->start); |
1605 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1606 | |
a2b38b3c RS |
1607 | if (MINI_WINDOW_P (w) && top > 0) |
1608 | error ("Can't expand minibuffer to full frame"); | |
1609 | ||
70728a80 | 1610 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1611 | |
00d3d838 KH |
1612 | /* Try to minimize scrolling, by setting the window start to the point |
1613 | will cause the text at the old window start to be at the same place | |
1614 | on the frame. But don't try to do this if the window start is | |
1615 | outside the visible portion (as might happen when the display is | |
1616 | not current, due to typeahead). */ | |
1617 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1618 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1619 | { | |
1620 | struct position pos; | |
1621 | struct buffer *obuf = current_buffer; | |
1622 | ||
1623 | Fset_buffer (w->buffer); | |
1624 | /* This computation used to temporarily move point, but that can | |
1625 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1626 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 1627 | |
b73ea88e RS |
1628 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
1629 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
1630 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 1631 | : Qnil); |
80622eec RS |
1632 | /* We need to do this, so that the window-scroll-functions |
1633 | get called. */ | |
4d047f50 | 1634 | w->optional_new_start = Qt; |
00d3d838 KH |
1635 | |
1636 | set_buffer_internal (obuf); | |
1637 | } | |
7ab12479 JB |
1638 | return Qnil; |
1639 | } | |
1640 | ||
1641 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1642 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1643 | "Delete all windows showing BUFFER.\n\ |
1644 | Optional second argument FRAME controls which frames are affected.\n\ | |
c520265e RS |
1645 | If optional argument FRAME is `visible', search all visible frames.\n\ |
1646 | If FRAME is 0, search all visible and iconified frames.\n\ | |
1647 | If FRAME is nil, search all frames.\n\ | |
1648 | If FRAME is t, search only the selected frame.\n\ | |
1649 | If FRAME is a frame, search only that frame.") | |
26f6279d JB |
1650 | (buffer, frame) |
1651 | Lisp_Object buffer, frame; | |
7ab12479 | 1652 | { |
26f6279d JB |
1653 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1654 | expects. */ | |
c520265e RS |
1655 | if (NILP (frame)) |
1656 | frame = Qt; | |
1657 | else if (EQ (frame, Qt)) | |
1658 | frame = Qnil; | |
26f6279d | 1659 | |
265a9e55 | 1660 | if (!NILP (buffer)) |
7ab12479 JB |
1661 | { |
1662 | buffer = Fget_buffer (buffer); | |
1663 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1664 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1665 | } |
1666 | return Qnil; | |
1667 | } | |
1668 | ||
1669 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1670 | Sreplace_buffer_in_windows, | |
1671 | 1, 1, "bReplace buffer in windows: ", | |
1672 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1673 | (buffer) | |
1674 | Lisp_Object buffer; | |
1675 | { | |
265a9e55 | 1676 | if (!NILP (buffer)) |
7ab12479 JB |
1677 | { |
1678 | buffer = Fget_buffer (buffer); | |
1679 | CHECK_BUFFER (buffer, 0); | |
1680 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1681 | } | |
1682 | return Qnil; | |
1683 | } | |
ff58478b RS |
1684 | |
1685 | /* Replace BUFFER with some other buffer in all windows | |
1686 | of all frames, even those on other keyboards. */ | |
1687 | ||
1688 | void | |
1689 | replace_buffer_in_all_windows (buffer) | |
1690 | Lisp_Object buffer; | |
1691 | { | |
27abb84f | 1692 | #ifdef MULTI_KBOARD |
ff58478b RS |
1693 | Lisp_Object tail, frame; |
1694 | ||
ff58478b RS |
1695 | /* A single call to window_loop won't do the job |
1696 | because it only considers frames on the current keyboard. | |
1697 | So loop manually over frames, and handle each one. */ | |
1698 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 1699 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 1700 | #else |
db7f721d | 1701 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
1702 | #endif |
1703 | } | |
7ab12479 JB |
1704 | \f |
1705 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1706 | |
1707 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1708 | might crash Emacs. */ | |
1709 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1710 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1711 | ||
1712 | /* Make sure that window_min_height and window_min_width are | |
1713 | not too small; if they are, set them to safe minima. */ | |
1714 | ||
1715 | static void | |
1716 | check_min_window_sizes () | |
1717 | { | |
1718 | /* Smaller values might permit a crash. */ | |
1719 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1720 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1721 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1722 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1723 | } | |
1724 | ||
1725 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1726 | minimum allowable size. */ | |
605be8af | 1727 | void |
a481b3ea | 1728 | check_frame_size (frame, rows, cols) |
605be8af JB |
1729 | FRAME_PTR frame; |
1730 | int *rows, *cols; | |
a481b3ea | 1731 | { |
628df3bf | 1732 | /* For height, we have to see: |
37962e60 | 1733 | whether the frame has a minibuffer, |
628df3bf JB |
1734 | whether it wants a mode line, and |
1735 | whether it has a menu bar. */ | |
a481b3ea | 1736 | int min_height = |
79f92720 JB |
1737 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1738 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1739 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1740 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1741 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1742 | |
1743 | if (*rows < min_height) | |
1744 | *rows = min_height; | |
1745 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1746 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1747 | } | |
1748 | ||
7ab12479 JB |
1749 | /* Normally the window is deleted if it gets too small. |
1750 | nodelete nonzero means do not do this. | |
1751 | (The caller should check later and do so if appropriate) */ | |
1752 | ||
5e14b1fc | 1753 | void |
7ab12479 JB |
1754 | set_window_height (window, height, nodelete) |
1755 | Lisp_Object window; | |
1756 | int height; | |
1757 | int nodelete; | |
1758 | { | |
1759 | register struct window *w = XWINDOW (window); | |
1760 | register struct window *c; | |
1761 | int oheight = XFASTINT (w->height); | |
1762 | int top, pos, lastbot, opos, lastobot; | |
1763 | Lisp_Object child; | |
1764 | ||
a481b3ea JB |
1765 | check_min_window_sizes (); |
1766 | ||
7ab12479 | 1767 | if (!nodelete |
265a9e55 | 1768 | && ! NILP (w->parent) |
c6b530ed RS |
1769 | && (MINI_WINDOW_P (w) |
1770 | ? height < 1 | |
1771 | : height < window_min_height)) | |
7ab12479 | 1772 | { |
543f5fb1 | 1773 | delete_window (window); |
7ab12479 JB |
1774 | return; |
1775 | } | |
1776 | ||
d834a2e9 | 1777 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1778 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1779 | windows_or_buffers_changed++; |
29aeee73 RS |
1780 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1781 | ||
d834a2e9 | 1782 | XSETFASTINT (w->height, height); |
265a9e55 | 1783 | if (!NILP (w->hchild)) |
7ab12479 | 1784 | { |
265a9e55 | 1785 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1786 | { |
1787 | XWINDOW (child)->top = w->top; | |
1788 | set_window_height (child, height, nodelete); | |
1789 | } | |
1790 | } | |
265a9e55 | 1791 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1792 | { |
1793 | lastbot = top = XFASTINT (w->top); | |
1794 | lastobot = 0; | |
265a9e55 | 1795 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1796 | { |
1797 | c = XWINDOW (child); | |
1798 | ||
1799 | opos = lastobot + XFASTINT (c->height); | |
1800 | ||
d834a2e9 | 1801 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1802 | |
1803 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1804 | ||
1805 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1806 | set_window_height (child, pos + top - lastbot, 1); | |
1807 | ||
1808 | /* Now advance child to next window, | |
1809 | and set lastbot if child was not just deleted. */ | |
1810 | lastbot = pos + top; | |
1811 | lastobot = opos; | |
1812 | } | |
1813 | /* Now delete any children that became too small. */ | |
1814 | if (!nodelete) | |
265a9e55 | 1815 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1816 | { |
1817 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1818 | } | |
1819 | } | |
1820 | } | |
1821 | ||
1822 | /* Recursively set width of WINDOW and its inferiors. */ | |
1823 | ||
5e14b1fc | 1824 | void |
7ab12479 JB |
1825 | set_window_width (window, width, nodelete) |
1826 | Lisp_Object window; | |
1827 | int width; | |
1828 | int nodelete; | |
1829 | { | |
1830 | register struct window *w = XWINDOW (window); | |
1831 | register struct window *c; | |
1832 | int owidth = XFASTINT (w->width); | |
1833 | int left, pos, lastright, opos, lastoright; | |
1834 | Lisp_Object child; | |
1835 | ||
abdced83 | 1836 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 | 1837 | { |
543f5fb1 | 1838 | delete_window (window); |
7ab12479 JB |
1839 | return; |
1840 | } | |
1841 | ||
d834a2e9 | 1842 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1843 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1844 | windows_or_buffers_changed++; |
29aeee73 RS |
1845 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1846 | ||
d834a2e9 | 1847 | XSETFASTINT (w->width, width); |
265a9e55 | 1848 | if (!NILP (w->vchild)) |
7ab12479 | 1849 | { |
265a9e55 | 1850 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1851 | { |
1852 | XWINDOW (child)->left = w->left; | |
1853 | set_window_width (child, width, nodelete); | |
1854 | } | |
1855 | } | |
265a9e55 | 1856 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1857 | { |
1858 | lastright = left = XFASTINT (w->left); | |
1859 | lastoright = 0; | |
265a9e55 | 1860 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1861 | { |
1862 | c = XWINDOW (child); | |
1863 | ||
1864 | opos = lastoright + XFASTINT (c->width); | |
1865 | ||
d834a2e9 | 1866 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1867 | |
1868 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1869 | ||
1870 | /* Inhibit deletion for becoming too small */ | |
1871 | set_window_width (child, pos + left - lastright, 1); | |
1872 | ||
1873 | /* Now advance child to next window, | |
1874 | and set lastright if child was not just deleted. */ | |
1875 | lastright = pos + left, lastoright = opos; | |
1876 | } | |
1877 | /* Delete children that became too small */ | |
1878 | if (!nodelete) | |
265a9e55 | 1879 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1880 | { |
1881 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1882 | } | |
1883 | } | |
1884 | } | |
1885 | \f | |
1d8d96fa | 1886 | int window_select_count; |
7ab12479 | 1887 | |
5b03d3c0 RS |
1888 | Lisp_Object |
1889 | Fset_window_buffer_unwind (obuf) | |
1890 | Lisp_Object obuf; | |
1891 | { | |
1892 | Fset_buffer (obuf); | |
1893 | return Qnil; | |
1894 | } | |
1895 | ||
7ab12479 JB |
1896 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, |
1897 | "Make WINDOW display BUFFER as its contents.\n\ | |
1898 | BUFFER can be a buffer or buffer name.") | |
1899 | (window, buffer) | |
1900 | register Lisp_Object window, buffer; | |
1901 | { | |
1902 | register Lisp_Object tem; | |
1903 | register struct window *w = decode_window (window); | |
5b03d3c0 | 1904 | int count = specpdl_ptr - specpdl; |
7ab12479 JB |
1905 | |
1906 | buffer = Fget_buffer (buffer); | |
1907 | CHECK_BUFFER (buffer, 1); | |
1908 | ||
265a9e55 | 1909 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1910 | error ("Attempt to display deleted buffer"); |
1911 | ||
1912 | tem = w->buffer; | |
265a9e55 | 1913 | if (NILP (tem)) |
7ab12479 JB |
1914 | error ("Window is deleted"); |
1915 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1916 | is first being set up. */ | |
1917 | { | |
265a9e55 | 1918 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1919 | error ("Window is dedicated to `%s'", |
1920 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1921 | |
1922 | unshow_buffer (w); | |
1923 | } | |
1924 | ||
1925 | w->buffer = buffer; | |
86e48436 RS |
1926 | |
1927 | if (EQ (window, selected_window)) | |
1928 | XBUFFER (w->buffer)->last_selected_window = window; | |
beb4e312 RS |
1929 | |
1930 | /* Update time stamps of buffer display. */ | |
850ebd4f RS |
1931 | if (INTEGERP (XBUFFER (buffer)->display_count)) |
1932 | XSETINT (XBUFFER (buffer)->display_count, | |
296b535c | 1933 | XINT (XBUFFER (buffer)->display_count) + 1); |
beb4e312 | 1934 | XBUFFER (buffer)->display_time = Fcurrent_time (); |
86e48436 | 1935 | |
d834a2e9 | 1936 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1937 | w->window_end_valid = Qnil; |
dba06815 | 1938 | XSETFASTINT (w->hscroll, 0); |
b73ea88e RS |
1939 | set_marker_both (w->pointm, buffer, |
1940 | BUF_PT (XBUFFER (buffer)), BUF_PT_BYTE (XBUFFER (buffer))); | |
7ab12479 JB |
1941 | set_marker_restricted (w->start, |
1942 | make_number (XBUFFER (buffer)->last_window_start), | |
1943 | buffer); | |
1944 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1945 | w->force_start = Qnil; |
d834a2e9 | 1946 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1947 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1948 | windows_or_buffers_changed++; |
5b03d3c0 RS |
1949 | |
1950 | /* We must select BUFFER for running the window-scroll-functions. | |
1951 | If WINDOW is selected, switch permanently. | |
1952 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
1953 | if (EQ (window, selected_window)) |
1954 | Fset_buffer (buffer); | |
5b03d3c0 RS |
1955 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
1956 | because that might itself be a local variable. */ | |
1957 | else if (window_initialized) | |
1958 | { | |
1959 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
1960 | Fset_buffer (buffer); | |
1961 | } | |
1962 | ||
dba06815 RS |
1963 | if (! NILP (Vwindow_scroll_functions)) |
1964 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1965 | Fmarker_position (w->start)); | |
7ab12479 | 1966 | |
543f5fb1 RS |
1967 | if (! NILP (Vwindow_configuration_change_hook) |
1968 | && ! NILP (Vrun_hooks)) | |
1969 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1970 | ||
5b03d3c0 RS |
1971 | unbind_to (count, Qnil); |
1972 | ||
7ab12479 JB |
1973 | return Qnil; |
1974 | } | |
1975 | ||
1976 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1977 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
beb4e312 RS |
1978 | If WINDOW is not already selected, also make WINDOW's buffer current.\n\ |
1979 | Note that the main editor command loop\n\ | |
1980 | selects the buffer of the selected window before each command.") | |
7ab12479 JB |
1981 | (window) |
1982 | register Lisp_Object window; | |
b7354ddf RS |
1983 | { |
1984 | return select_window_1 (window, 1); | |
1985 | } | |
1986 | \f | |
1987 | static Lisp_Object | |
1988 | select_window_1 (window, recordflag) | |
1989 | register Lisp_Object window; | |
1990 | int recordflag; | |
7ab12479 JB |
1991 | { |
1992 | register struct window *w; | |
1993 | register struct window *ow = XWINDOW (selected_window); | |
1994 | ||
605be8af | 1995 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1996 | |
1997 | w = XWINDOW (window); | |
1998 | ||
265a9e55 | 1999 | if (NILP (w->buffer)) |
7ab12479 JB |
2000 | error ("Trying to select deleted window or non-leaf window"); |
2001 | ||
d834a2e9 | 2002 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
2003 | if (EQ (window, selected_window)) |
2004 | return window; | |
2005 | ||
596ae0cf RS |
2006 | if (! NILP (ow->buffer)) |
2007 | set_marker_both (ow->pointm, ow->buffer, | |
2008 | BUF_PT (XBUFFER (ow->buffer)), | |
2009 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
7ab12479 JB |
2010 | |
2011 | selected_window = window; | |
44fa5b1e | 2012 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) |
7ab12479 | 2013 | { |
44fa5b1e | 2014 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
2015 | /* Use this rather than Fhandle_switch_frame |
2016 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
2017 | move around in the state where a minibuffer in a separate | |
2018 | frame is active. */ | |
2019 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
2020 | } |
2021 | else | |
44fa5b1e | 2022 | selected_frame->selected_window = window; |
7ab12479 | 2023 | |
b7354ddf RS |
2024 | if (recordflag) |
2025 | record_buffer (w->buffer); | |
7ab12479 JB |
2026 | Fset_buffer (w->buffer); |
2027 | ||
86e48436 RS |
2028 | XBUFFER (w->buffer)->last_selected_window = window; |
2029 | ||
7ab12479 JB |
2030 | /* Go to the point recorded in the window. |
2031 | This is important when the buffer is in more | |
2032 | than one window. It also matters when | |
2033 | redisplay_window has altered point after scrolling, | |
2034 | because it makes the change only in the window. */ | |
2035 | { | |
2036 | register int new_point = marker_position (w->pointm); | |
2037 | if (new_point < BEGV) | |
2038 | SET_PT (BEGV); | |
a9c95e08 | 2039 | else if (new_point > ZV) |
7ab12479 JB |
2040 | SET_PT (ZV); |
2041 | else | |
2042 | SET_PT (new_point); | |
2043 | } | |
2044 | ||
2045 | windows_or_buffers_changed++; | |
2046 | return window; | |
2047 | } | |
b7354ddf | 2048 | \f |
441a127e RS |
2049 | /* Deiconify the frame containing the window WINDOW, |
2050 | unless it is the selected frame; | |
2051 | then return WINDOW. | |
2052 | ||
2053 | The reason for the exception for the selected frame | |
2054 | is that it seems better not to change the selected frames visibility | |
2055 | merely because of displaying a different buffer in it. | |
2056 | The deiconification is useful when a buffer gets shown in | |
2057 | another frame that you were not using lately. */ | |
d07f802a RS |
2058 | |
2059 | static Lisp_Object | |
2060 | display_buffer_1 (window) | |
2061 | Lisp_Object window; | |
2062 | { | |
d07f802a RS |
2063 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
2064 | FRAME_SAMPLE_VISIBILITY (f); | |
60117126 RS |
2065 | if (f != selected_frame) |
2066 | { | |
2067 | if (FRAME_ICONIFIED_P (f)) | |
2068 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
37962e60 | 2069 | else if (FRAME_VISIBLE_P (f)) |
60117126 RS |
2070 | Fraise_frame (WINDOW_FRAME (XWINDOW (window))); |
2071 | } | |
d07f802a RS |
2072 | return window; |
2073 | } | |
2074 | ||
4628f7a4 | 2075 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2076 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2077 | The value is actually t if the frame should be called with default frame\n\ | |
2078 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2079 | See `special-display-buffer-names', and `special-display-regexps'.") |
2080 | (buffer_name) | |
2081 | Lisp_Object buffer_name; | |
2082 | { | |
2083 | Lisp_Object tem; | |
2084 | ||
2085 | CHECK_STRING (buffer_name, 1); | |
2086 | ||
2087 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2088 | if (!NILP (tem)) | |
2089 | return Qt; | |
2090 | ||
2091 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2092 | if (!NILP (tem)) | |
2093 | return XCDR (tem); | |
2094 | ||
2095 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2096 | { | |
2097 | Lisp_Object car = XCAR (tem); | |
2098 | if (STRINGP (car) | |
2099 | && fast_string_match (car, buffer_name) >= 0) | |
2100 | return Qt; | |
2101 | else if (CONSP (car) | |
2102 | && STRINGP (XCAR (car)) | |
2103 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 2104 | return XCDR (car); |
4628f7a4 EN |
2105 | } |
2106 | return Qnil; | |
2107 | } | |
2108 | ||
2109 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2110 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2111 | See `same-window-buffer-names' and `same-window-regexps'.") |
2112 | (buffer_name) | |
2113 | Lisp_Object buffer_name; | |
2114 | { | |
2115 | Lisp_Object tem; | |
2116 | ||
2117 | CHECK_STRING (buffer_name, 1); | |
2118 | ||
2119 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2120 | if (!NILP (tem)) | |
2121 | return Qt; | |
2122 | ||
2123 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2124 | if (!NILP (tem)) | |
2125 | return Qt; | |
2126 | ||
2127 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2128 | { | |
2129 | Lisp_Object car = XCAR (tem); | |
2130 | if (STRINGP (car) | |
2131 | && fast_string_match (car, buffer_name) >= 0) | |
2132 | return Qt; | |
2133 | else if (CONSP (car) | |
2134 | && STRINGP (XCAR (car)) | |
2135 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2136 | return Qt; | |
2137 | } | |
2138 | return Qnil; | |
2139 | } | |
2140 | ||
53f76081 RS |
2141 | /* Use B so the default is (other-buffer). */ |
2142 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, | |
2143 | "BDisplay buffer: \nP", | |
7ab12479 JB |
2144 | "Make BUFFER appear in some window but don't select it.\n\ |
2145 | BUFFER can be a buffer or a buffer name.\n\ | |
2146 | If BUFFER is shown already in some window, just use that one,\n\ | |
2147 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2148 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2149 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 RS |
2150 | Returns the window displaying BUFFER.\n\ |
2151 | \n\ | |
2152 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2153 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
53f76081 RS |
2154 | buffer names are handled.\n\ |
2155 | \n\ | |
2156 | If optional argument FRAME is `visible', search all visible frames.\n\ | |
2157 | If FRAME is 0, search all visible and iconified frames.\n\ | |
2158 | If FRAME is t, search all frames.\n\ | |
2159 | If FRAME is a frame, search only that frame.\n\ | |
2160 | If FRAME is nil, search only the selected frame\n\ | |
2161 | (actually the last nonminibuffer frame),\n\ | |
2162 | unless `pop-up-frames' is non-nil,\n\ | |
2163 | which means search visible and iconified frames.") | |
2164 | (buffer, not_this_window, frame) | |
2165 | register Lisp_Object buffer, not_this_window, frame; | |
7ab12479 | 2166 | { |
a90712c2 | 2167 | register Lisp_Object window, tem; |
7ab12479 JB |
2168 | |
2169 | buffer = Fget_buffer (buffer); | |
2170 | CHECK_BUFFER (buffer, 0); | |
2171 | ||
265a9e55 | 2172 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2173 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2174 | ||
265a9e55 | 2175 | if (NILP (not_this_window) |
7ab12479 | 2176 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2177 | return display_buffer_1 (selected_window); |
7ab12479 | 2178 | |
855d8627 RS |
2179 | /* See if the user has specified this buffer should appear |
2180 | in the selected window. */ | |
2181 | if (NILP (not_this_window)) | |
2182 | { | |
4628f7a4 | 2183 | tem = Fsame_window_p (XBUFFER (buffer)->name); |
855d8627 | 2184 | if (!NILP (tem)) |
c63dc4a2 RS |
2185 | { |
2186 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2187 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2188 | } |
855d8627 RS |
2189 | } |
2190 | ||
e8edb3ae | 2191 | /* If pop_up_frames, |
73dc5198 KH |
2192 | look for a window showing BUFFER on any visible or iconified frame. |
2193 | Otherwise search only the current frame. */ | |
53f76081 RS |
2194 | if (! NILP (frame)) |
2195 | tem = frame; | |
2196 | else if (pop_up_frames || last_nonminibuf_frame == 0) | |
73dc5198 KH |
2197 | XSETFASTINT (tem, 0); |
2198 | else | |
73dc5198 KH |
2199 | XSETFRAME (tem, last_nonminibuf_frame); |
2200 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
2201 | if (!NILP (window) |
2202 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 2203 | { |
d07f802a | 2204 | return display_buffer_1 (window); |
f812f9c6 | 2205 | } |
7ab12479 | 2206 | |
a90712c2 | 2207 | /* Certain buffer names get special handling. */ |
4628f7a4 | 2208 | if (!NILP (Vspecial_display_function)) |
a90712c2 | 2209 | { |
4628f7a4 EN |
2210 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2211 | if (EQ (tem, Qt)) | |
a90712c2 | 2212 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2213 | if (CONSP (tem)) |
2214 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2215 | } |
2216 | ||
44fa5b1e JB |
2217 | /* If there are no frames open that have more than a minibuffer, |
2218 | we need to create a new frame. */ | |
2219 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2220 | { |
a90712c2 | 2221 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2222 | Fset_window_buffer (window, buffer); |
d07f802a | 2223 | return display_buffer_1 (window); |
7ab12479 | 2224 | } |
7ab12479 | 2225 | |
43bad991 | 2226 | if (pop_up_windows |
44fa5b1e | 2227 | || FRAME_MINIBUF_ONLY_P (selected_frame) |
cee67da9 RS |
2228 | /* If the current frame is a special display frame, |
2229 | don't try to reuse its windows. */ | |
2230 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 | 2231 | ) |
7ab12479 | 2232 | { |
12cae7c0 KH |
2233 | Lisp_Object frames; |
2234 | ||
37962e60 | 2235 | frames = Qnil; |
44fa5b1e | 2236 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) |
74112613 | 2237 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2238 | /* Don't try to create a window if would get an error */ |
2239 | if (split_height_threshold < window_min_height << 1) | |
2240 | split_height_threshold = window_min_height << 1; | |
2241 | ||
cee67da9 RS |
2242 | /* Note that both Fget_largest_window and Fget_lru_window |
2243 | ignore minibuffers and dedicated windows. | |
2244 | This means they can return nil. */ | |
7ab12479 | 2245 | |
cee67da9 RS |
2246 | /* If the frame we would try to split cannot be split, |
2247 | try other frames. */ | |
2248 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
2249 | : last_nonminibuf_frame)) | |
2250 | { | |
2251 | /* Try visible frames first. */ | |
2252 | window = Fget_largest_window (Qvisible); | |
2253 | /* If that didn't work, try iconified frames. */ | |
2254 | if (NILP (window)) | |
2255 | window = Fget_largest_window (make_number (0)); | |
2256 | if (NILP (window)) | |
2257 | window = Fget_largest_window (Qt); | |
2258 | } | |
2259 | else | |
2260 | window = Fget_largest_window (frames); | |
2261 | ||
92cca945 RS |
2262 | /* If we got a tall enough full-width window that can be split, |
2263 | split it. */ | |
265a9e55 | 2264 | if (!NILP (window) |
92cca945 | 2265 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2266 | && window_height (window) >= split_height_threshold |
111e5992 | 2267 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2268 | window = Fsplit_window (window, Qnil, Qnil); |
2269 | else | |
2270 | { | |
1942f68f RS |
2271 | Lisp_Object upper, lower, other; |
2272 | ||
44fa5b1e | 2273 | window = Fget_lru_window (frames); |
92cca945 RS |
2274 | /* If the LRU window is selected, and big enough, |
2275 | and can be split, split it. */ | |
cee67da9 | 2276 | if (!NILP (window) |
92cca945 | 2277 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2278 | && (EQ (window, selected_window) |
2279 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2280 | && window_height (window) >= window_min_height << 1) |
2281 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 | 2282 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 2283 | |
cee67da9 | 2284 | /* Try visible frames first. */ |
48d9379d RS |
2285 | if (NILP (window)) |
2286 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 RS |
2287 | if (NILP (window)) |
2288 | window = Fget_largest_window (Qvisible); | |
2289 | /* If that didn't work, try iconified frames. */ | |
48d9379d RS |
2290 | if (NILP (window)) |
2291 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 RS |
2292 | if (NILP (window)) |
2293 | window = Fget_largest_window (make_number (0)); | |
2294 | /* Try invisible frames. */ | |
48d9379d RS |
2295 | if (NILP (window)) |
2296 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 RS |
2297 | if (NILP (window)) |
2298 | window = Fget_largest_window (Qt); | |
2299 | /* As a last resort, make a new frame. */ | |
2300 | if (NILP (window)) | |
2301 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2302 | /* If window appears above or below another, |
2303 | even out their heights. */ | |
cac66e4f | 2304 | other = upper = lower = Qnil; |
1942f68f RS |
2305 | if (!NILP (XWINDOW (window)->prev)) |
2306 | other = upper = XWINDOW (window)->prev, lower = window; | |
2307 | if (!NILP (XWINDOW (window)->next)) | |
2308 | other = lower = XWINDOW (window)->next, upper = window; | |
2309 | if (!NILP (other) | |
2310 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
296b535c KH |
2311 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
2312 | && (XFASTINT (XWINDOW (other)->height) | |
2313 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 2314 | { |
296b535c KH |
2315 | int total = (XFASTINT (XWINDOW (other)->height) |
2316 | + XFASTINT (XWINDOW (window)->height)); | |
8d77c0c8 KH |
2317 | Lisp_Object old_selected_window; |
2318 | old_selected_window = selected_window; | |
1942f68f | 2319 | |
8d77c0c8 | 2320 | selected_window = upper; |
296b535c KH |
2321 | change_window_height ((total / 2 |
2322 | - XFASTINT (XWINDOW (upper)->height)), | |
2323 | 0); | |
1942f68f RS |
2324 | selected_window = old_selected_window; |
2325 | } | |
7ab12479 JB |
2326 | } |
2327 | } | |
2328 | else | |
2329 | window = Fget_lru_window (Qnil); | |
2330 | ||
2331 | Fset_window_buffer (window, buffer); | |
d07f802a | 2332 | return display_buffer_1 (window); |
7ab12479 JB |
2333 | } |
2334 | ||
2335 | void | |
2336 | temp_output_buffer_show (buf) | |
2337 | register Lisp_Object buf; | |
2338 | { | |
2339 | register struct buffer *old = current_buffer; | |
2340 | register Lisp_Object window; | |
2341 | register struct window *w; | |
2342 | ||
bccd3dd1 RS |
2343 | XBUFFER (buf)->directory = current_buffer->directory; |
2344 | ||
7ab12479 | 2345 | Fset_buffer (buf); |
c6367666 | 2346 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2347 | BEGV = BEG; |
2348 | ZV = Z; | |
2349 | SET_PT (BEG); | |
1479ef51 | 2350 | XBUFFER (buf)->clip_changed = 1; |
7ab12479 JB |
2351 | set_buffer_internal (old); |
2352 | ||
2353 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2354 | call1 (Vtemp_buffer_show_function, buf); | |
2355 | else | |
2356 | { | |
53f76081 | 2357 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 2358 | |
44fa5b1e JB |
2359 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) |
2360 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7ab12479 JB |
2361 | Vminibuf_scroll_window = window; |
2362 | w = XWINDOW (window); | |
d834a2e9 | 2363 | XSETFASTINT (w->hscroll, 0); |
b73ea88e RS |
2364 | set_marker_restricted_both (w->start, buf, 1, 1); |
2365 | set_marker_restricted_both (w->pointm, buf, 1, 1); | |
a58ec57d | 2366 | |
beb4e312 RS |
2367 | /* Run temp-buffer-show-hook, with the chosen window selected |
2368 | and it sbuffer current. */ | |
f52cca03 | 2369 | if (!NILP (Vrun_hooks)) |
2cccc823 | 2370 | { |
f52cca03 RS |
2371 | Lisp_Object tem; |
2372 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2373 | if (!NILP (tem)) |
2374 | { | |
f52cca03 RS |
2375 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2376 | if (!NILP (tem)) | |
2377 | { | |
2378 | int count = specpdl_ptr - specpdl; | |
b7354ddf RS |
2379 | Lisp_Object prev_window; |
2380 | prev_window = selected_window; | |
2cccc823 | 2381 | |
f52cca03 RS |
2382 | /* Select the window that was chosen, for running the hook. */ |
2383 | record_unwind_protect (Fset_window_configuration, | |
2384 | Fcurrent_window_configuration (Qnil)); | |
2cccc823 | 2385 | |
b7354ddf | 2386 | select_window_1 (window, 0); |
beb4e312 | 2387 | Fset_buffer (w->buffer); |
f52cca03 | 2388 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); |
b7354ddf | 2389 | select_window_1 (prev_window, 0); |
f52cca03 RS |
2390 | unbind_to (count, Qnil); |
2391 | } | |
2cccc823 RS |
2392 | } |
2393 | } | |
2394 | } | |
7ab12479 JB |
2395 | } |
2396 | \f | |
dfcf069d | 2397 | static void |
7ab12479 JB |
2398 | make_dummy_parent (window) |
2399 | Lisp_Object window; | |
2400 | { | |
cffec418 | 2401 | Lisp_Object new; |
7ab12479 | 2402 | register struct window *o, *p; |
cffec418 KH |
2403 | register struct Lisp_Vector *vec; |
2404 | int i; | |
7ab12479 | 2405 | |
cffec418 KH |
2406 | o = XWINDOW (window); |
2407 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2408 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2409 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2410 | vec->size = VECSIZE (struct window); | |
2411 | p = (struct window *)vec; | |
2412 | XSETWINDOW (new, p); | |
7ab12479 | 2413 | |
d834a2e9 | 2414 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2415 | |
2416 | /* Put new into window structure in place of window */ | |
2417 | replace_window (window, new); | |
2418 | ||
2419 | o->next = Qnil; | |
2420 | o->prev = Qnil; | |
2421 | o->vchild = Qnil; | |
2422 | o->hchild = Qnil; | |
2423 | o->parent = new; | |
2424 | ||
2425 | p->start = Qnil; | |
2426 | p->pointm = Qnil; | |
2427 | p->buffer = Qnil; | |
2428 | } | |
2429 | ||
2430 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2431 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2432 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 2433 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
7ab12479 | 2434 | and put SIZE columns in the first of the pair.") |
77ae0fe3 KH |
2435 | (window, size, horflag) |
2436 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
2437 | { |
2438 | register Lisp_Object new; | |
2439 | register struct window *o, *p; | |
c0807608 | 2440 | FRAME_PTR fo; |
77ae0fe3 | 2441 | register int size_int; |
7ab12479 | 2442 | |
265a9e55 | 2443 | if (NILP (window)) |
7ab12479 JB |
2444 | window = selected_window; |
2445 | else | |
605be8af | 2446 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2447 | |
2448 | o = XWINDOW (window); | |
c0807608 | 2449 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 2450 | |
77ae0fe3 | 2451 | if (NILP (size)) |
7ab12479 | 2452 | { |
265a9e55 | 2453 | if (!NILP (horflag)) |
c0807608 KH |
2454 | /* Calculate the size of the left-hand window, by dividing |
2455 | the usable space in columns by two. */ | |
a59fed7e | 2456 | size_int = XFASTINT (o->width) >> 1; |
7ab12479 | 2457 | else |
77ae0fe3 | 2458 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
2459 | } |
2460 | else | |
2461 | { | |
77ae0fe3 KH |
2462 | CHECK_NUMBER (size, 1); |
2463 | size_int = XINT (size); | |
7ab12479 JB |
2464 | } |
2465 | ||
2466 | if (MINI_WINDOW_P (o)) | |
2467 | error ("Attempt to split minibuffer window"); | |
7ab12479 | 2468 | |
a481b3ea | 2469 | check_min_window_sizes (); |
7ab12479 | 2470 | |
265a9e55 | 2471 | if (NILP (horflag)) |
7ab12479 | 2472 | { |
77ae0fe3 KH |
2473 | if (size_int < window_min_height) |
2474 | error ("Window height %d too small (after splitting)", size_int); | |
2475 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 2476 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 2477 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
2478 | if (NILP (o->parent) |
2479 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2480 | { |
2481 | make_dummy_parent (window); | |
2482 | new = o->parent; | |
2483 | XWINDOW (new)->vchild = window; | |
2484 | } | |
2485 | } | |
2486 | else | |
2487 | { | |
77ae0fe3 KH |
2488 | if (size_int < window_min_width) |
2489 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
2490 | |
2491 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 2492 | error ("Window width %d too small (after splitting)", |
a59fed7e | 2493 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
2494 | if (NILP (o->parent) |
2495 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2496 | { |
2497 | make_dummy_parent (window); | |
2498 | new = o->parent; | |
2499 | XWINDOW (new)->hchild = window; | |
2500 | } | |
2501 | } | |
2502 | ||
2503 | /* Now we know that window's parent is a vertical combination | |
2504 | if we are dividing vertically, or a horizontal combination | |
2505 | if we are making side-by-side windows */ | |
2506 | ||
2507 | windows_or_buffers_changed++; | |
c0807608 | 2508 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
2509 | new = make_window (); |
2510 | p = XWINDOW (new); | |
2511 | ||
44fa5b1e | 2512 | p->frame = o->frame; |
7ab12479 | 2513 | p->next = o->next; |
265a9e55 | 2514 | if (!NILP (p->next)) |
7ab12479 JB |
2515 | XWINDOW (p->next)->prev = new; |
2516 | p->prev = window; | |
2517 | o->next = new; | |
2518 | p->parent = o->parent; | |
2519 | p->buffer = Qt; | |
2520 | ||
44fa5b1e | 2521 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2522 | |
265a9e55 | 2523 | if (!NILP (horflag)) |
7ab12479 JB |
2524 | { |
2525 | p->height = o->height; | |
2526 | p->top = o->top; | |
a59fed7e | 2527 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
2528 | XSETFASTINT (o->width, size_int); |
2529 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
2530 | } |
2531 | else | |
2532 | { | |
2533 | p->left = o->left; | |
2534 | p->width = o->width; | |
77ae0fe3 KH |
2535 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
2536 | XSETFASTINT (o->height, size_int); | |
2537 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
2538 | } |
2539 | ||
543f5fb1 RS |
2540 | Fset_window_buffer (new, o->buffer); |
2541 | ||
7ab12479 JB |
2542 | return new; |
2543 | } | |
2544 | \f | |
2545 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2546 | "Make current window ARG lines bigger.\n\ | |
2547 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
2548 | (arg, side) |
2549 | register Lisp_Object arg, side; | |
7ab12479 | 2550 | { |
413430c5 EN |
2551 | CHECK_NUMBER (arg, 0); |
2552 | change_window_height (XINT (arg), !NILP (side)); | |
543f5fb1 RS |
2553 | |
2554 | if (! NILP (Vwindow_configuration_change_hook)) | |
2555 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2556 | ||
7ab12479 JB |
2557 | return Qnil; |
2558 | } | |
2559 | ||
2560 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2561 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
2562 | From program, optional second arg non-nil means shrink sideways arg columns.") |
2563 | (arg, side) | |
2564 | register Lisp_Object arg, side; | |
7ab12479 | 2565 | { |
413430c5 EN |
2566 | CHECK_NUMBER (arg, 0); |
2567 | change_window_height (-XINT (arg), !NILP (side)); | |
543f5fb1 RS |
2568 | |
2569 | if (! NILP (Vwindow_configuration_change_hook)) | |
2570 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2571 | ||
7ab12479 JB |
2572 | return Qnil; |
2573 | } | |
2574 | ||
2575 | int | |
2576 | window_height (window) | |
2577 | Lisp_Object window; | |
2578 | { | |
2579 | register struct window *p = XWINDOW (window); | |
2580 | return XFASTINT (p->height); | |
2581 | } | |
2582 | ||
2583 | int | |
2584 | window_width (window) | |
2585 | Lisp_Object window; | |
2586 | { | |
2587 | register struct window *p = XWINDOW (window); | |
2588 | return XFASTINT (p->width); | |
2589 | } | |
2590 | ||
05c2896a JB |
2591 | #define MINSIZE(w) \ |
2592 | (widthflag \ | |
2593 | ? window_min_width \ | |
2594 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2595 | |
2596 | #define CURBEG(w) \ | |
05c2896a | 2597 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2598 | |
2599 | #define CURSIZE(w) \ | |
05c2896a | 2600 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2601 | |
2602 | /* Unlike set_window_height, this function | |
2603 | also changes the heights of the siblings so as to | |
2604 | keep everything consistent. */ | |
2605 | ||
5e14b1fc | 2606 | void |
7ab12479 JB |
2607 | change_window_height (delta, widthflag) |
2608 | register int delta; | |
2609 | int widthflag; | |
2610 | { | |
2611 | register Lisp_Object parent; | |
2612 | Lisp_Object window; | |
2613 | register struct window *p; | |
2614 | int *sizep; | |
5e14b1fc AS |
2615 | int (*sizefun) P_ ((Lisp_Object)) |
2616 | = widthflag ? window_width : window_height; | |
2617 | register void (*setsizefun) P_ ((Lisp_Object, int, int)) | |
2618 | = (widthflag ? set_window_width : set_window_height); | |
db98a733 RS |
2619 | int maximum; |
2620 | Lisp_Object next, prev; | |
7ab12479 | 2621 | |
a481b3ea | 2622 | check_min_window_sizes (); |
7ab12479 JB |
2623 | |
2624 | window = selected_window; | |
2625 | while (1) | |
2626 | { | |
2627 | p = XWINDOW (window); | |
2628 | parent = p->parent; | |
265a9e55 | 2629 | if (NILP (parent)) |
7ab12479 JB |
2630 | { |
2631 | if (widthflag) | |
2632 | error ("No other window to side of this one"); | |
2633 | break; | |
2634 | } | |
265a9e55 JB |
2635 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2636 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2637 | break; |
2638 | window = parent; | |
2639 | } | |
2640 | ||
05c2896a | 2641 | sizep = &CURSIZE (window); |
7ab12479 | 2642 | |
7ab12479 JB |
2643 | { |
2644 | register int maxdelta; | |
7ab12479 | 2645 | |
265a9e55 JB |
2646 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2647 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2648 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2649 | /* This is a frame with only one window, a minibuffer-only |
2650 | or a minibufferless frame. */ | |
d5783c40 | 2651 | : (delta = 0)); |
7ab12479 JB |
2652 | |
2653 | if (delta > maxdelta) | |
2654 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2655 | the full frame, or make the only window aside from the |
2656 | minibuffer the full frame. */ | |
7ab12479 | 2657 | delta = maxdelta; |
6b54027b | 2658 | } |
d5783c40 | 2659 | |
6b54027b RS |
2660 | if (*sizep + delta < MINSIZE (window)) |
2661 | { | |
543f5fb1 | 2662 | delete_window (window); |
d5783c40 | 2663 | return; |
6b54027b RS |
2664 | } |
2665 | ||
2666 | if (delta == 0) | |
2667 | return; | |
7ab12479 | 2668 | |
db98a733 RS |
2669 | /* Find the total we can get from other siblings. */ |
2670 | maximum = 0; | |
2671 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
2672 | maximum += (*sizefun) (next) - MINSIZE (next); | |
2673 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
2674 | maximum += (*sizefun) (prev) - MINSIZE (prev); | |
2675 | ||
2676 | /* If we can get it all from them, do so. */ | |
c6b530ed | 2677 | if (delta <= maximum) |
7ab12479 | 2678 | { |
db98a733 RS |
2679 | Lisp_Object first_unaffected; |
2680 | Lisp_Object first_affected; | |
2681 | ||
2682 | next = p->next; | |
2683 | prev = p->prev; | |
2684 | first_affected = window; | |
2685 | /* Look at one sibling at a time, | |
2686 | moving away from this window in both directions alternately, | |
2687 | and take as much as we can get without deleting that sibling. */ | |
dc91fb5d | 2688 | while (delta != 0) |
db98a733 RS |
2689 | { |
2690 | if (delta == 0) | |
2691 | break; | |
2692 | if (! NILP (next)) | |
2693 | { | |
2694 | int this_one = (*sizefun) (next) - MINSIZE (next); | |
2695 | if (this_one > delta) | |
2696 | this_one = delta; | |
2697 | ||
2698 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
2699 | (*setsizefun) (window, *sizep + this_one, 0); | |
2700 | ||
2701 | delta -= this_one; | |
2702 | next = XWINDOW (next)->next; | |
2703 | } | |
2704 | if (delta == 0) | |
2705 | break; | |
2706 | if (! NILP (prev)) | |
2707 | { | |
2708 | int this_one = (*sizefun) (prev) - MINSIZE (prev); | |
2709 | if (this_one > delta) | |
2710 | this_one = delta; | |
2711 | ||
2712 | first_affected = prev; | |
2713 | ||
2714 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
2715 | (*setsizefun) (window, *sizep + this_one, 0); | |
2716 | ||
2717 | delta -= this_one; | |
2718 | prev = XWINDOW (prev)->prev; | |
2719 | } | |
2720 | } | |
2721 | ||
2722 | /* Now recalculate the edge positions of all the windows affected, | |
2723 | based on the new sizes. */ | |
2724 | first_unaffected = next; | |
2725 | prev = first_affected; | |
2726 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
2727 | prev = next, next = XWINDOW (next)->next) | |
2728 | { | |
2729 | CURBEG (next) = CURBEG (prev) + (*sizefun) (prev); | |
2730 | /* This does not change size of NEXT, | |
2731 | but it propagates the new top edge to its children */ | |
2732 | (*setsizefun) (next, (*sizefun) (next), 0); | |
2733 | } | |
7ab12479 JB |
2734 | } |
2735 | else | |
2736 | { | |
2737 | register int delta1; | |
2738 | register int opht = (*sizefun) (parent); | |
2739 | ||
2740 | /* If trying to grow this window to or beyond size of the parent, | |
2741 | make delta1 so big that, on shrinking back down, | |
2742 | all the siblings end up with less than one line and are deleted. */ | |
2743 | if (opht <= *sizep + delta) | |
2744 | delta1 = opht * opht * 2; | |
2745 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2746 | lines to this window and to the parent, and then shrink | |
2747 | the parent back to its original size, the new proportional | |
2748 | size of this window will increase by delta. */ | |
2749 | else | |
2750 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2751 | ||
2752 | /* Add delta1 lines or columns to this window, and to the parent, | |
2753 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2754 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2755 | (*setsizefun) (window, *sizep + delta1, 0); |
2756 | ||
2757 | /* Squeeze out delta1 lines or columns from our parent, | |
2758 | shriking this window and siblings proportionately. | |
2759 | This brings parent back to correct size. | |
2760 | Delta1 was calculated so this makes this window the desired size, | |
2761 | taking it all out of the siblings. */ | |
2762 | (*setsizefun) (parent, opht, 0); | |
2763 | } | |
2764 | ||
d834a2e9 | 2765 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 2766 | XSETFASTINT (p->last_overlay_modified, 0); |
7ab12479 JB |
2767 | } |
2768 | #undef MINSIZE | |
2769 | #undef CURBEG | |
2770 | #undef CURSIZE | |
2771 | ||
2772 | \f | |
2773 | /* Return number of lines of text (not counting mode line) in W. */ | |
2774 | ||
2775 | int | |
2776 | window_internal_height (w) | |
2777 | struct window *w; | |
2778 | { | |
2779 | int ht = XFASTINT (w->height); | |
2780 | ||
2781 | if (MINI_WINDOW_P (w)) | |
2782 | return ht; | |
2783 | ||
265a9e55 JB |
2784 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2785 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2786 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2787 | return ht - 1; |
2788 | ||
2789 | return ht; | |
2790 | } | |
2791 | ||
535e0b8e JB |
2792 | |
2793 | /* Return the number of columns in W. | |
a3c87d4e | 2794 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2795 | separating W from the sibling to its right. */ |
2796 | int | |
2797 | window_internal_width (w) | |
2798 | struct window *w; | |
2799 | { | |
2800 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
535e0b8e JB |
2801 | int width = XINT (w->width); |
2802 | ||
a3c87d4e JB |
2803 | /* Scroll bars occupy a few columns. */ |
2804 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2805 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2806 | |
2807 | /* The column of `|' characters separating side-by-side windows | |
2808 | occupies one column only. */ | |
111e5992 RS |
2809 | if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) |
2810 | return width - 1; | |
2811 | ||
2812 | return width; | |
535e0b8e JB |
2813 | } |
2814 | ||
2815 | ||
101d1605 | 2816 | /* Scroll contents of window WINDOW up N lines. |
9317a85d | 2817 | If WHOLE is nonzero, it means scroll N screenfuls instead. */ |
7ab12479 | 2818 | |
101d1605 RS |
2819 | static void |
2820 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
2821 | Lisp_Object window; |
2822 | int n; | |
101d1605 | 2823 | int whole; |
f8026fd8 | 2824 | int noerror; |
7ab12479 JB |
2825 | { |
2826 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2827 | register int opoint = PT; |
cb8419b5 | 2828 | register int opoint_byte = PT_BYTE; |
b73ea88e | 2829 | register int pos, pos_byte; |
7ab12479 JB |
2830 | register int ht = window_internal_height (w); |
2831 | register Lisp_Object tem; | |
2832 | int lose; | |
2833 | Lisp_Object bolp, nmoved; | |
345d45b2 | 2834 | int startpos; |
101d1605 RS |
2835 | struct position posit; |
2836 | int original_vpos; | |
2837 | ||
2838 | startpos = marker_position (w->start); | |
2839 | ||
2840 | posit = *compute_motion (startpos, 0, 0, 0, | |
2841 | PT, ht, 0, | |
2842 | window_internal_width (w), XINT (w->hscroll), | |
2843 | 0, w); | |
2844 | original_vpos = posit.vpos; | |
0a1f771a | 2845 | |
d834a2e9 | 2846 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2847 | tem = Fpos_visible_in_window_p (tem, window); |
2848 | ||
265a9e55 | 2849 | if (NILP (tem)) |
7ab12479 | 2850 | { |
cd2be1dd | 2851 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 2852 | startpos = PT; |
7ab12479 JB |
2853 | } |
2854 | ||
345d45b2 | 2855 | SET_PT (startpos); |
5ce7b543 | 2856 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2857 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2858 | pos = PT; |
b73ea88e | 2859 | pos_byte = PT_BYTE; |
7ab12479 | 2860 | bolp = Fbolp (); |
b73ea88e | 2861 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
2862 | |
2863 | if (lose) | |
f8026fd8 JB |
2864 | { |
2865 | if (noerror) | |
2866 | return; | |
2867 | else | |
2868 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2869 | } | |
7ab12479 JB |
2870 | |
2871 | if (pos < ZV) | |
7ab12479 | 2872 | { |
0c7da84e RS |
2873 | int this_scroll_margin = scroll_margin; |
2874 | ||
2875 | /* Don't use a scroll margin that is negative or too large. */ | |
2876 | if (this_scroll_margin < 0) | |
2877 | this_scroll_margin = 0; | |
2878 | ||
2879 | if (XINT (w->height) < 4 * scroll_margin) | |
2880 | this_scroll_margin = XINT (w->height) / 4; | |
2881 | ||
b73ea88e | 2882 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
2883 | w->start_at_line_beg = bolp; |
2884 | w->update_mode_line = Qt; | |
d834a2e9 | 2885 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2886 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
2887 | /* Set force_start so that redisplay_window will run |
2888 | the window-scroll-functions. */ | |
2889 | w->force_start = Qt; | |
0c7da84e | 2890 | |
9317a85d | 2891 | if (whole && scroll_preserve_screen_position) |
0c7da84e | 2892 | { |
b73ea88e | 2893 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 2894 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 2895 | } |
101d1605 RS |
2896 | /* If we scrolled forward, put point enough lines down |
2897 | that it is outside the scroll margin. */ | |
2898 | else if (n > 0) | |
0c7da84e | 2899 | { |
101d1605 RS |
2900 | int top_margin; |
2901 | ||
2902 | if (this_scroll_margin > 0) | |
2903 | { | |
b73ea88e | 2904 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
2905 | Fvertical_motion (make_number (this_scroll_margin), window); |
2906 | top_margin = PT; | |
2907 | } | |
2908 | else | |
2909 | top_margin = pos; | |
2910 | ||
2911 | if (top_margin <= opoint) | |
b73ea88e | 2912 | SET_PT_BOTH (opoint, opoint_byte); |
9317a85d | 2913 | else if (scroll_preserve_screen_position) |
101d1605 | 2914 | { |
b73ea88e | 2915 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
2916 | Fvertical_motion (make_number (original_vpos), window); |
2917 | } | |
9317a85d | 2918 | else |
335406fc | 2919 | SET_PT (top_margin); |
0c7da84e | 2920 | } |
101d1605 | 2921 | else if (n < 0) |
7ab12479 | 2922 | { |
101d1605 RS |
2923 | int bottom_margin; |
2924 | ||
0c7da84e RS |
2925 | /* If we scrolled backward, put point near the end of the window |
2926 | but not within the scroll margin. */ | |
b73ea88e | 2927 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 2928 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
2929 | if (XFASTINT (tem) == ht - this_scroll_margin) |
2930 | bottom_margin = PT; | |
2931 | else | |
2932 | bottom_margin = PT + 1; | |
2933 | ||
2934 | if (bottom_margin > opoint) | |
b73ea88e | 2935 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 2936 | else |
101d1605 | 2937 | { |
9317a85d RS |
2938 | if (scroll_preserve_screen_position) |
2939 | { | |
b73ea88e | 2940 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
2941 | Fvertical_motion (make_number (original_vpos), window); |
2942 | } | |
2943 | else | |
2944 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 2945 | } |
7ab12479 JB |
2946 | } |
2947 | } | |
2948 | else | |
f8026fd8 JB |
2949 | { |
2950 | if (noerror) | |
2951 | return; | |
2952 | else | |
2953 | Fsignal (Qend_of_buffer, Qnil); | |
2954 | } | |
7ab12479 JB |
2955 | } |
2956 | \f | |
2957 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2958 | ||
2959 | static void | |
2960 | scroll_command (n, direction) | |
2961 | register Lisp_Object n; | |
2962 | int direction; | |
2963 | { | |
2964 | register int defalt; | |
2965 | int count = specpdl_ptr - specpdl; | |
2966 | ||
95605e15 JB |
2967 | /* If selected window's buffer isn't current, make it current for the moment. |
2968 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2969 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2970 | { |
2971 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2972 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2973 | } | |
7ab12479 JB |
2974 | |
2975 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2976 | - next_screen_context_lines); | |
2977 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2978 | ||
265a9e55 | 2979 | if (NILP (n)) |
101d1605 | 2980 | window_scroll (selected_window, defalt, 1, 0); |
7ab12479 | 2981 | else if (EQ (n, Qminus)) |
101d1605 | 2982 | window_scroll (selected_window, - defalt, 1, 0); |
7ab12479 JB |
2983 | else |
2984 | { | |
2985 | n = Fprefix_numeric_value (n); | |
101d1605 | 2986 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 2987 | } |
95605e15 JB |
2988 | |
2989 | unbind_to (count, Qnil); | |
7ab12479 JB |
2990 | } |
2991 | ||
2992 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2993 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2994 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2995 | Negative ARG means scroll downward.\n\ |
dd394ff9 KH |
2996 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
2997 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
2998 | (arg) |
2999 | Lisp_Object arg; | |
7ab12479 | 3000 | { |
413430c5 | 3001 | scroll_command (arg, 1); |
7ab12479 JB |
3002 | return Qnil; |
3003 | } | |
3004 | ||
3005 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a5fcbc4e | 3006 | "Scroll text of current window down ARG lines; or near full screen if no ARG.\n\ |
7ab12479 | 3007 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
279e0e0c | 3008 | Negative ARG means scroll upward.\n\ |
dd394ff9 KH |
3009 | If ARG is the atom `-', scroll upward by nearly full screen.\n\ |
3010 | When calling from a program, supply as argument a number, nil, or `-'.") | |
413430c5 EN |
3011 | (arg) |
3012 | Lisp_Object arg; | |
7ab12479 | 3013 | { |
413430c5 | 3014 | scroll_command (arg, -1); |
7ab12479 JB |
3015 | return Qnil; |
3016 | } | |
ccd0664b RS |
3017 | \f |
3018 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
3019 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 3020 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
3021 | specifies the window.\n\ |
3022 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
3023 | showing that buffer is used.") | |
eb16ec06 | 3024 | () |
7ab12479 | 3025 | { |
ccd0664b | 3026 | Lisp_Object window; |
7ab12479 JB |
3027 | |
3028 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 3029 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
3030 | window = Vminibuf_scroll_window; |
3031 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 3032 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
3033 | { |
3034 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 3035 | if (NILP (window)) |
53f76081 | 3036 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
3037 | } |
3038 | else | |
dbc4e1c1 JB |
3039 | { |
3040 | /* Nothing specified; look for a neighboring window on the same | |
3041 | frame. */ | |
3042 | window = Fnext_window (selected_window, Qnil, Qnil); | |
3043 | ||
3044 | if (EQ (window, selected_window)) | |
3045 | /* That didn't get us anywhere; look for a window on another | |
3046 | visible frame. */ | |
3047 | do | |
3048 | window = Fnext_window (window, Qnil, Qt); | |
3049 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
3050 | && ! EQ (window, selected_window)); | |
3051 | } | |
3052 | ||
605be8af | 3053 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
3054 | |
3055 | if (EQ (window, selected_window)) | |
3056 | error ("There is no other window"); | |
3057 | ||
ccd0664b RS |
3058 | return window; |
3059 | } | |
3060 | ||
3061 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
3062 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
dd394ff9 | 3063 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ |
ccd0664b RS |
3064 | The next window is the one below the current one; or the one at the top\n\ |
3065 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
dd394ff9 KH |
3066 | If ARG is the atom `-', scroll downward by nearly full screen.\n\ |
3067 | When calling from a program, supply as argument a number, nil, or `-'.\n\ | |
ccd0664b RS |
3068 | \n\ |
3069 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
3070 | specifies the window to scroll.\n\ | |
3071 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
3072 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
3073 | (arg) |
3074 | register Lisp_Object arg; | |
ccd0664b RS |
3075 | { |
3076 | register Lisp_Object window; | |
2f787aa3 | 3077 | register int defalt; |
ccd0664b RS |
3078 | register struct window *w; |
3079 | register int count = specpdl_ptr - specpdl; | |
3080 | ||
3081 | window = Fother_window_for_scrolling (); | |
3082 | ||
7ab12479 | 3083 | w = XWINDOW (window); |
2f787aa3 KH |
3084 | defalt = window_internal_height (w) - next_screen_context_lines; |
3085 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
3086 | |
3087 | /* Don't screw up if window_scroll gets an error. */ | |
3088 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
3089 | ||
3090 | Fset_buffer (w->buffer); | |
3091 | SET_PT (marker_position (w->pointm)); | |
3092 | ||
413430c5 | 3093 | if (NILP (arg)) |
101d1605 | 3094 | window_scroll (window, defalt, 1, 1); |
413430c5 | 3095 | else if (EQ (arg, Qminus)) |
101d1605 | 3096 | window_scroll (window, -defalt, 1, 1); |
7ab12479 JB |
3097 | else |
3098 | { | |
413430c5 EN |
3099 | if (CONSP (arg)) |
3100 | arg = Fcar (arg); | |
3101 | CHECK_NUMBER (arg, 0); | |
101d1605 | 3102 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
3103 | } |
3104 | ||
b73ea88e | 3105 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 3106 | unbind_to (count, Qnil); |
7ab12479 JB |
3107 | |
3108 | return Qnil; | |
3109 | } | |
3110 | \f | |
644b477c | 3111 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
3112 | "Scroll selected window display ARG columns left.\n\ |
3113 | Default for ARG is window width minus 2.") | |
3114 | (arg) | |
3115 | register Lisp_Object arg; | |
3116 | { | |
3117 | ||
265a9e55 | 3118 | if (NILP (arg)) |
d834a2e9 | 3119 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
3120 | else |
3121 | arg = Fprefix_numeric_value (arg); | |
3122 | ||
3123 | return | |
3124 | Fset_window_hscroll (selected_window, | |
3125 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
3126 | + XINT (arg))); | |
3127 | } | |
3128 | ||
644b477c | 3129 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
3130 | "Scroll selected window display ARG columns right.\n\ |
3131 | Default for ARG is window width minus 2.") | |
3132 | (arg) | |
3133 | register Lisp_Object arg; | |
3134 | { | |
265a9e55 | 3135 | if (NILP (arg)) |
d834a2e9 | 3136 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
3137 | else |
3138 | arg = Fprefix_numeric_value (arg); | |
3139 | ||
3140 | return | |
3141 | Fset_window_hscroll (selected_window, | |
3142 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
3143 | - XINT (arg))); | |
3144 | } | |
3145 | ||
3146 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 3147 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 3148 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 3149 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 3150 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 3151 | redraws with point in the center of the current window.") |
413430c5 EN |
3152 | (arg) |
3153 | register Lisp_Object arg; | |
7ab12479 JB |
3154 | { |
3155 | register struct window *w = XWINDOW (selected_window); | |
3156 | register int ht = window_internal_height (w); | |
113d9015 | 3157 | struct position pos; |
478292ed RS |
3158 | struct buffer *buf = XBUFFER (w->buffer); |
3159 | struct buffer *obuf = current_buffer; | |
7ab12479 | 3160 | |
413430c5 | 3161 | if (NILP (arg)) |
7ab12479 | 3162 | { |
44fa5b1e | 3163 | extern int frame_garbaged; |
7ab12479 | 3164 | |
44fa5b1e | 3165 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 3166 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 3167 | } |
413430c5 | 3168 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 3169 | { |
413430c5 | 3170 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
3171 | } |
3172 | else | |
3173 | { | |
413430c5 EN |
3174 | arg = Fprefix_numeric_value (arg); |
3175 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
3176 | } |
3177 | ||
413430c5 EN |
3178 | if (XINT (arg) < 0) |
3179 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 3180 | |
478292ed | 3181 | set_buffer_internal (buf); |
6ec8bbd2 | 3182 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 3183 | |
b73ea88e RS |
3184 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
3185 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
3186 | || FETCH_BYTE (pos.bytepos - 1) == '\n') | |
113d9015 | 3187 | ? Qt : Qnil); |
7ab12479 | 3188 | w->force_start = Qt; |
478292ed | 3189 | set_buffer_internal (obuf); |
7ab12479 JB |
3190 | |
3191 | return Qnil; | |
3192 | } | |
3193 | \f | |
3194 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
3195 | 1, 1, "P", | |
3196 | "Position point relative to window.\n\ | |
19e3bf0a | 3197 | With no argument, position point at center of window.\n\ |
d81724c7 RS |
3198 | An argument specifies vertical position within the window;\n\ |
3199 | zero means top of window, negative means relative to bottom of window.") | |
7ab12479 JB |
3200 | (arg) |
3201 | register Lisp_Object arg; | |
3202 | { | |
3203 | register struct window *w = XWINDOW (selected_window); | |
3204 | register int height = window_internal_height (w); | |
3205 | register int start; | |
540b6aa0 | 3206 | Lisp_Object window; |
7ab12479 | 3207 | |
265a9e55 | 3208 | if (NILP (arg)) |
d834a2e9 | 3209 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
3210 | else |
3211 | { | |
3212 | arg = Fprefix_numeric_value (arg); | |
3213 | if (XINT (arg) < 0) | |
3214 | XSETINT (arg, XINT (arg) + height); | |
3215 | } | |
3216 | ||
3217 | start = marker_position (w->start); | |
74112613 | 3218 | XSETWINDOW (window, w); |
7ab12479 JB |
3219 | if (start < BEGV || start > ZV) |
3220 | { | |
cd2be1dd | 3221 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 3222 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
3223 | w->start_at_line_beg = Fbolp (); |
3224 | w->force_start = Qt; | |
3225 | } | |
3226 | else | |
b73ea88e | 3227 | Fgoto_char (w->start); |
7ab12479 | 3228 | |
540b6aa0 | 3229 | return Fvertical_motion (arg, window); |
7ab12479 JB |
3230 | } |
3231 | \f | |
3232 | struct save_window_data | |
3233 | { | |
f5ccc0cc | 3234 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 3235 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 3236 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 3237 | Lisp_Object selected_frame; |
7ab12479 JB |
3238 | Lisp_Object current_window; |
3239 | Lisp_Object current_buffer; | |
3240 | Lisp_Object minibuf_scroll_window; | |
3241 | Lisp_Object root_window; | |
bdc727bf | 3242 | Lisp_Object focus_frame; |
756b6edc RS |
3243 | /* Record the values of window-min-width and window-min-height |
3244 | so that window sizes remain consistent with them. */ | |
3245 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
3246 | /* A vector, each of whose elements is a struct saved_window |
3247 | for one window. */ | |
7ab12479 JB |
3248 | Lisp_Object saved_windows; |
3249 | }; | |
ff06df24 | 3250 | |
cbff28e8 | 3251 | /* This is saved as a Lisp_Vector */ |
7ab12479 JB |
3252 | struct saved_window |
3253 | { | |
3254 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 3255 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
3256 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
3257 | ||
3258 | Lisp_Object window; | |
3259 | Lisp_Object buffer, start, pointm, mark; | |
3260 | Lisp_Object left, top, width, height, hscroll; | |
3261 | Lisp_Object parent, prev; | |
3262 | Lisp_Object start_at_line_beg; | |
3263 | Lisp_Object display_table; | |
3264 | }; | |
3265 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
3266 | ||
3267 | #define SAVED_WINDOW_N(swv,n) \ | |
3268 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
3269 | ||
3270 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
cbff28e8 | 3271 | "Return t if OBJECT is a window-configuration object.") |
413430c5 EN |
3272 | (object) |
3273 | Lisp_Object object; | |
7ab12479 | 3274 | { |
413430c5 | 3275 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
3276 | return Qt; |
3277 | return Qnil; | |
3278 | } | |
3279 | ||
d5b2799e RS |
3280 | DEFUN ("set-window-configuration", Fset_window_configuration, |
3281 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
3282 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
3283 | CONFIGURATION must be a value previously returned\n\ | |
3284 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
3285 | (configuration) |
3286 | Lisp_Object configuration; | |
7ab12479 | 3287 | { |
7ab12479 JB |
3288 | register struct save_window_data *data; |
3289 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 3290 | Lisp_Object new_current_buffer; |
fd482be5 | 3291 | Lisp_Object frame; |
44fa5b1e | 3292 | FRAME_PTR f; |
d2b35234 | 3293 | int old_point = -1; |
7ab12479 | 3294 | |
017b2bad | 3295 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 3296 | { |
2f83aebe JB |
3297 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
3298 | configuration); | |
7ab12479 JB |
3299 | } |
3300 | ||
2f83aebe | 3301 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
3302 | saved_windows = XVECTOR (data->saved_windows); |
3303 | ||
7ab12479 | 3304 | new_current_buffer = data->current_buffer; |
265a9e55 | 3305 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 3306 | new_current_buffer = Qnil; |
d2b35234 RS |
3307 | else |
3308 | { | |
3309 | if (XBUFFER (new_current_buffer) == current_buffer) | |
3310 | old_point = PT; | |
cbff28e8 | 3311 | |
d2b35234 | 3312 | } |
7ab12479 | 3313 | |
fd482be5 JB |
3314 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3315 | f = XFRAME (frame); | |
9ace597f | 3316 | |
fd482be5 JB |
3317 | /* If f is a dead frame, don't bother rebuilding its window tree. |
3318 | However, there is other stuff we should still try to do below. */ | |
3319 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 3320 | { |
fd482be5 JB |
3321 | register struct window *w; |
3322 | register struct saved_window *p; | |
3323 | int k; | |
3324 | ||
3325 | /* If the frame has been resized since this window configuration was | |
3326 | made, we change the frame to the size specified in the | |
3327 | configuration, restore the configuration, and then resize it | |
3328 | back. We keep track of the prevailing height in these variables. */ | |
3329 | int previous_frame_height = FRAME_HEIGHT (f); | |
3330 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 3331 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 | 3332 | |
d2b35234 RS |
3333 | /* The mouse highlighting code could get screwed up |
3334 | if it runs during this. */ | |
3335 | BLOCK_INPUT; | |
3336 | ||
fd482be5 JB |
3337 | if (XFASTINT (data->frame_height) != previous_frame_height |
3338 | || XFASTINT (data->frame_width) != previous_frame_width) | |
f8ad443a AS |
3339 | change_frame_size (f, XFASTINT (data->frame_height), |
3340 | XFASTINT (data->frame_width), 0, 0); | |
e3678b64 | 3341 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3342 | if (XFASTINT (data->frame_menu_bar_lines) |
3343 | != previous_frame_menu_bar_lines) | |
f8ad443a | 3344 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
217f2871 | 3345 | #endif |
fd482be5 | 3346 | |
596ae0cf RS |
3347 | if (! NILP (XWINDOW (selected_window)->buffer)) |
3348 | { | |
3349 | w = XWINDOW (selected_window); | |
3350 | set_marker_both (w->pointm, | |
3351 | w->buffer, | |
3352 | BUF_PT (XBUFFER (w->buffer)), | |
3353 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
3354 | } | |
3355 | ||
fd482be5 | 3356 | windows_or_buffers_changed++; |
29aeee73 | 3357 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 3358 | |
756b6edc RS |
3359 | /* Temporarily avoid any problems with windows that are smaller |
3360 | than they are supposed to be. */ | |
3361 | window_min_height = 1; | |
3362 | window_min_width = 1; | |
3363 | ||
fd482be5 JB |
3364 | /* Kludge Alert! |
3365 | Mark all windows now on frame as "deleted". | |
3366 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 3367 | |
fd482be5 JB |
3368 | Save their current buffers in their height fields, since we may |
3369 | need it later, if a buffer saved in the configuration is now | |
3370 | dead. */ | |
3371 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
3372 | ||
3373 | for (k = 0; k < saved_windows->size; k++) | |
3374 | { | |
3375 | p = SAVED_WINDOW_N (saved_windows, k); | |
3376 | w = XWINDOW (p->window); | |
3377 | w->next = Qnil; | |
7ab12479 | 3378 | |
fd482be5 JB |
3379 | if (!NILP (p->parent)) |
3380 | w->parent = SAVED_WINDOW_N (saved_windows, | |
3381 | XFASTINT (p->parent))->window; | |
3382 | else | |
3383 | w->parent = Qnil; | |
7ab12479 | 3384 | |
fd482be5 | 3385 | if (!NILP (p->prev)) |
7ab12479 | 3386 | { |
fd482be5 JB |
3387 | w->prev = SAVED_WINDOW_N (saved_windows, |
3388 | XFASTINT (p->prev))->window; | |
3389 | XWINDOW (w->prev)->next = p->window; | |
3390 | } | |
3391 | else | |
3392 | { | |
3393 | w->prev = Qnil; | |
3394 | if (!NILP (w->parent)) | |
3395 | { | |
3396 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
3397 | { | |
3398 | XWINDOW (w->parent)->vchild = p->window; | |
3399 | XWINDOW (w->parent)->hchild = Qnil; | |
3400 | } | |
3401 | else | |
3402 | { | |
3403 | XWINDOW (w->parent)->hchild = p->window; | |
3404 | XWINDOW (w->parent)->vchild = Qnil; | |
3405 | } | |
3406 | } | |
3407 | } | |
3408 | ||
3409 | /* If we squirreled away the buffer in the window's height, | |
3410 | restore it now. */ | |
017b2bad | 3411 | if (BUFFERP (w->height)) |
fd482be5 JB |
3412 | w->buffer = w->height; |
3413 | w->left = p->left; | |
3414 | w->top = p->top; | |
3415 | w->width = p->width; | |
3416 | w->height = p->height; | |
3417 | w->hscroll = p->hscroll; | |
3418 | w->display_table = p->display_table; | |
d834a2e9 | 3419 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3420 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
3421 | |
3422 | /* Reinstall the saved buffer and pointers into it. */ | |
3423 | if (NILP (p->buffer)) | |
3424 | w->buffer = p->buffer; | |
3425 | else | |
3426 | { | |
3427 | if (!NILP (XBUFFER (p->buffer)->name)) | |
3428 | /* If saved buffer is alive, install it. */ | |
3429 | { | |
3430 | w->buffer = p->buffer; | |
3431 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
3432 | set_marker_restricted (w->start, p->start, w->buffer); |
3433 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 3434 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 3435 | p->mark, w->buffer); |
fd482be5 JB |
3436 | |
3437 | /* As documented in Fcurrent_window_configuration, don't | |
3438 | save the location of point in the buffer which was current | |
3439 | when the window configuration was recorded. */ | |
6b54027b RS |
3440 | if (!EQ (p->buffer, new_current_buffer) |
3441 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
3442 | Fgoto_char (w->pointm); |
3443 | } | |
52a68e98 RS |
3444 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
3445 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 3446 | { |
fd482be5 JB |
3447 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
3448 | /* This will set the markers to beginning of visible | |
3449 | range. */ | |
3450 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
3451 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
3452 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3453 | } |
3454 | else | |
fd482be5 | 3455 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 3456 | are real. */ |
7ab12479 | 3457 | { |
fd482be5 JB |
3458 | /* Set window markers at start of visible range. */ |
3459 | if (XMARKER (w->start)->buffer == 0) | |
3460 | set_marker_restricted (w->start, make_number (0), | |
3461 | w->buffer); | |
3462 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
3463 | set_marker_restricted_both (w->pointm, w->buffer, |
3464 | BUF_PT (XBUFFER (w->buffer)), | |
3465 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 3466 | w->start_at_line_beg = Qt; |
7ab12479 JB |
3467 | } |
3468 | } | |
3469 | } | |
9ace597f | 3470 | |
fd482be5 JB |
3471 | FRAME_ROOT_WINDOW (f) = data->root_window; |
3472 | Fselect_window (data->current_window); | |
396a830c RS |
3473 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
3474 | = selected_window; | |
7ab12479 | 3475 | |
db269683 | 3476 | if (NILP (data->focus_frame) |
017b2bad | 3477 | || (FRAMEP (data->focus_frame) |
db269683 JB |
3478 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
3479 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 3480 | |
fd482be5 JB |
3481 | #if 0 /* I don't understand why this is needed, and it causes problems |
3482 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 3483 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
3484 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
3485 | Qnil, 0); | |
fd482be5 JB |
3486 | #endif |
3487 | ||
3488 | /* Set the screen height to the value it had before this function. */ | |
3489 | if (previous_frame_height != FRAME_HEIGHT (f) | |
3490 | || previous_frame_width != FRAME_WIDTH (f)) | |
3491 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
3492 | 0, 0); | |
e3678b64 | 3493 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 3494 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
3495 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
3496 | make_number (0)); | |
217f2871 | 3497 | #endif |
d2b35234 RS |
3498 | |
3499 | UNBLOCK_INPUT; | |
756b6edc | 3500 | |
478292ed RS |
3501 | /* Fselect_window will have made f the selected frame, so we |
3502 | reselect the proper frame here. Fhandle_switch_frame will change the | |
3503 | selected window too, but that doesn't make the call to | |
3504 | Fselect_window above totally superfluous; it still sets f's | |
3505 | selected window. */ | |
3506 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
3507 | do_switch_frame (data->selected_frame, Qnil, 0); | |
3508 | ||
3509 | if (! NILP (Vwindow_configuration_change_hook) | |
3510 | && ! NILP (Vrun_hooks)) | |
3511 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3512 | } | |
bdc727bf JB |
3513 | |
3514 | if (!NILP (new_current_buffer)) | |
d2b35234 RS |
3515 | { |
3516 | Fset_buffer (new_current_buffer); | |
3517 | ||
3518 | /* If the buffer that is current now is the same | |
3519 | that was current before setting the window configuration, | |
3520 | don't alter its PT. */ | |
3521 | if (old_point >= 0) | |
3522 | SET_PT (old_point); | |
3523 | } | |
bdc727bf | 3524 | |
478292ed RS |
3525 | /* Restore the minimum heights recorded in the configuration. */ |
3526 | window_min_height = XINT (data->min_height); | |
3527 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 3528 | |
478292ed | 3529 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 | 3530 | |
478292ed | 3531 | return Qnil; |
7ab12479 JB |
3532 | } |
3533 | ||
44fa5b1e | 3534 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3535 | by setting their buffers to nil. */ |
3536 | ||
fd482be5 | 3537 | void |
7ab12479 JB |
3538 | delete_all_subwindows (w) |
3539 | register struct window *w; | |
3540 | { | |
265a9e55 | 3541 | if (!NILP (w->next)) |
7ab12479 | 3542 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3543 | if (!NILP (w->vchild)) |
7ab12479 | 3544 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3545 | if (!NILP (w->hchild)) |
7ab12479 | 3546 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3547 | |
3548 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3549 | ||
86e48436 RS |
3550 | if (!NILP (w->buffer)) |
3551 | unshow_buffer (w); | |
3552 | ||
605be8af JB |
3553 | /* We set all three of these fields to nil, to make sure that we can |
3554 | distinguish this dead window from any live window. Live leaf | |
3555 | windows will have buffer set, and combination windows will have | |
3556 | vchild or hchild set. */ | |
3557 | w->buffer = Qnil; | |
3558 | w->vchild = Qnil; | |
3559 | w->hchild = Qnil; | |
7ab12479 JB |
3560 | } |
3561 | \f | |
3562 | static int | |
3563 | count_windows (window) | |
3564 | register struct window *window; | |
3565 | { | |
3566 | register int count = 1; | |
265a9e55 | 3567 | if (!NILP (window->next)) |
7ab12479 | 3568 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3569 | if (!NILP (window->vchild)) |
7ab12479 | 3570 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3571 | if (!NILP (window->hchild)) |
7ab12479 JB |
3572 | count += count_windows (XWINDOW (window->hchild)); |
3573 | return count; | |
3574 | } | |
3575 | ||
3576 | static int | |
3577 | save_window_save (window, vector, i) | |
3578 | Lisp_Object window; | |
3579 | struct Lisp_Vector *vector; | |
3580 | int i; | |
3581 | { | |
3582 | register struct saved_window *p; | |
3583 | register struct window *w; | |
3584 | register Lisp_Object tem; | |
3585 | ||
265a9e55 | 3586 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3587 | { |
3588 | p = SAVED_WINDOW_N (vector, i); | |
3589 | w = XWINDOW (window); | |
3590 | ||
d834a2e9 | 3591 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3592 | p->window = window; |
3593 | p->buffer = w->buffer; | |
3594 | p->left = w->left; | |
3595 | p->top = w->top; | |
3596 | p->width = w->width; | |
3597 | p->height = w->height; | |
3598 | p->hscroll = w->hscroll; | |
3599 | p->display_table = w->display_table; | |
265a9e55 | 3600 | if (!NILP (w->buffer)) |
7ab12479 JB |
3601 | { |
3602 | /* Save w's value of point in the window configuration. | |
3603 | If w is the selected window, then get the value of point | |
3604 | from the buffer; pointm is garbage in the selected window. */ | |
3605 | if (EQ (window, selected_window)) | |
3606 | { | |
3607 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
3608 | set_marker_both (p->pointm, w->buffer, |
3609 | BUF_PT (XBUFFER (w->buffer)), | |
3610 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
3611 | } |
3612 | else | |
eeb82665 | 3613 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 3614 | |
eeb82665 | 3615 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
3616 | p->start_at_line_beg = w->start_at_line_beg; |
3617 | ||
3618 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 3619 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
3620 | } |
3621 | else | |
3622 | { | |
3623 | p->pointm = Qnil; | |
3624 | p->start = Qnil; | |
3625 | p->mark = Qnil; | |
3626 | p->start_at_line_beg = Qnil; | |
3627 | } | |
3628 | ||
265a9e55 | 3629 | if (NILP (w->parent)) |
7ab12479 JB |
3630 | p->parent = Qnil; |
3631 | else | |
3632 | p->parent = XWINDOW (w->parent)->temslot; | |
3633 | ||
265a9e55 | 3634 | if (NILP (w->prev)) |
7ab12479 JB |
3635 | p->prev = Qnil; |
3636 | else | |
3637 | p->prev = XWINDOW (w->prev)->temslot; | |
3638 | ||
265a9e55 | 3639 | if (!NILP (w->vchild)) |
7ab12479 | 3640 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3641 | if (!NILP (w->hchild)) |
7ab12479 JB |
3642 | i = save_window_save (w->hchild, vector, i); |
3643 | } | |
3644 | ||
3645 | return i; | |
3646 | } | |
3647 | ||
a0d76c27 EN |
3648 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
3649 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
3650 | "Return an object representing the current window configuration of FRAME.\n\ |
3651 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3652 | This describes the number of windows, their sizes and current buffers,\n\ |
3653 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3654 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3655 | its value is -not- saved.\n\ |
3656 | This also records the currently selected frame, and FRAME's focus\n\ | |
3657 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3658 | (frame) |
3659 | Lisp_Object frame; | |
7ab12479 JB |
3660 | { |
3661 | register Lisp_Object tem; | |
3662 | register int n_windows; | |
3663 | register struct save_window_data *data; | |
da2792e0 | 3664 | register struct Lisp_Vector *vec; |
7ab12479 | 3665 | register int i; |
44fa5b1e | 3666 | FRAME_PTR f; |
43bad991 | 3667 | |
44fa5b1e JB |
3668 | if (NILP (frame)) |
3669 | f = selected_frame; | |
43bad991 JB |
3670 | else |
3671 | { | |
44fa5b1e JB |
3672 | CHECK_LIVE_FRAME (frame, 0); |
3673 | f = XFRAME (frame); | |
43bad991 | 3674 | } |
7ab12479 | 3675 | |
44fa5b1e | 3676 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3677 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3678 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3679 | vec->contents[i] = Qnil; | |
3680 | vec->size = VECSIZE (struct save_window_data); | |
3681 | data = (struct save_window_data *)vec; | |
3682 | ||
d834a2e9 KH |
3683 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3684 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3685 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
74112613 | 3686 | XSETFRAME (data->selected_frame, selected_frame); |
44fa5b1e | 3687 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3688 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3689 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3690 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3691 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3692 | XSETINT (data->min_height, window_min_height); |
3693 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3694 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3695 | data->saved_windows = tem; | |
3696 | for (i = 0; i < n_windows; i++) | |
3697 | XVECTOR (tem)->contents[i] | |
3698 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3699 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3700 | XVECTOR (tem), 0); |
74112613 | 3701 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3702 | return (tem); |
3703 | } | |
3704 | ||
3705 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3706 | 0, UNEVALLED, 0, | |
3707 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3708 | Restore which buffer appears in which window, where display starts,\n\ |
3709 | and the value of point and mark for each window.\n\ | |
3710 | Also restore which buffer is current.\n\ | |
3711 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3712 | Does not restore the value of point in current buffer.") |
3713 | (args) | |
3714 | Lisp_Object args; | |
3715 | { | |
3716 | register Lisp_Object val; | |
3717 | register int count = specpdl_ptr - specpdl; | |
3718 | ||
3719 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3720 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3721 | val = Fprogn (args); |
3722 | return unbind_to (count, val); | |
3723 | } | |
3724 | \f | |
cbff28e8 RS |
3725 | /* Return 1 if window configurations C1 and C2 |
3726 | describe the same state of affairs. This is used by Fequal. */ | |
3727 | ||
3728 | int | |
2f8274be | 3729 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 3730 | Lisp_Object c1, c2; |
2f8274be | 3731 | int ignore_positions; |
cbff28e8 RS |
3732 | { |
3733 | register struct save_window_data *d1, *d2; | |
3734 | struct Lisp_Vector *sw1, *sw2; | |
3735 | int i; | |
3736 | ||
3737 | d1 = (struct save_window_data *) XVECTOR (c1); | |
3738 | d2 = (struct save_window_data *) XVECTOR (c2); | |
3739 | sw1 = XVECTOR (d1->saved_windows); | |
3740 | sw2 = XVECTOR (d2->saved_windows); | |
3741 | ||
3742 | if (! EQ (d1->frame_width, d2->frame_width)) | |
3743 | return 0; | |
3744 | if (! EQ (d1->frame_height, d2->frame_height)) | |
3745 | return 0; | |
3746 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
3747 | return 0; | |
3748 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
3749 | return 0; | |
3750 | /* Don't compare the current_window field directly. | |
3751 | Instead see w1_is_current and w2_is_current, below. */ | |
3752 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
3753 | return 0; | |
2f8274be RS |
3754 | if (! ignore_positions) |
3755 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
3756 | return 0; | |
cbff28e8 RS |
3757 | /* Don't compare the root_window field. |
3758 | We don't require the two configurations | |
3759 | to use the same window object, | |
3760 | and the two root windows must be equivalent | |
3761 | if everything else compares equal. */ | |
3762 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
3763 | return 0; | |
3764 | if (! EQ (d1->min_width, d2->min_width)) | |
3765 | return 0; | |
3766 | if (! EQ (d1->min_height, d2->min_height)) | |
3767 | return 0; | |
3768 | ||
3769 | /* Verify that the two confis have the same number of windows. */ | |
3770 | if (sw1->size != sw2->size) | |
3771 | return 0; | |
3772 | ||
3773 | for (i = 0; i < sw1->size; i++) | |
3774 | { | |
3775 | struct saved_window *p1, *p2; | |
3776 | int w1_is_current, w2_is_current; | |
3777 | ||
3778 | p1 = SAVED_WINDOW_N (sw1, i); | |
3779 | p2 = SAVED_WINDOW_N (sw2, i); | |
3780 | ||
3781 | /* Verify that the current windows in the two | |
3782 | configurations correspond to each other. */ | |
3783 | w1_is_current = EQ (d1->current_window, p1->window); | |
3784 | w2_is_current = EQ (d2->current_window, p2->window); | |
3785 | ||
3786 | if (w1_is_current != w2_is_current) | |
3787 | return 0; | |
3788 | ||
3789 | /* Verify that the corresponding windows do match. */ | |
3790 | if (! EQ (p1->buffer, p2->buffer)) | |
3791 | return 0; | |
3792 | if (! EQ (p1->left, p2->left)) | |
3793 | return 0; | |
3794 | if (! EQ (p1->top, p2->top)) | |
3795 | return 0; | |
3796 | if (! EQ (p1->width, p2->width)) | |
3797 | return 0; | |
3798 | if (! EQ (p1->height, p2->height)) | |
3799 | return 0; | |
cbff28e8 RS |
3800 | if (! EQ (p1->display_table, p2->display_table)) |
3801 | return 0; | |
3802 | if (! EQ (p1->parent, p2->parent)) | |
3803 | return 0; | |
3804 | if (! EQ (p1->prev, p2->prev)) | |
3805 | return 0; | |
2f8274be RS |
3806 | if (! ignore_positions) |
3807 | { | |
3808 | if (! EQ (p1->hscroll, p2->hscroll)) | |
3809 | return 0; | |
3810 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) | |
3811 | return 0; | |
3812 | if (NILP (Fequal (p1->start, p2->start))) | |
3813 | return 0; | |
3814 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
3815 | return 0; | |
3816 | if (NILP (Fequal (p1->mark, p2->mark))) | |
3817 | return 0; | |
3818 | } | |
cbff28e8 RS |
3819 | } |
3820 | ||
3821 | return 1; | |
3822 | } | |
2f8274be RS |
3823 | |
3824 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
3825 | Scompare_window_configurations, 2, 2, 0, | |
3826 | "Compare two window configurations as regards the structure of windows.\n\ | |
3827 | This function ignores details such as the values of point and mark\n\ | |
3828 | and scrolling positions.") | |
3829 | (x, y) | |
3830 | Lisp_Object x, y; | |
3831 | { | |
3832 | if (compare_window_configurations (x, y, 1)) | |
3833 | return Qt; | |
3834 | return Qnil; | |
3835 | } | |
cbff28e8 | 3836 | \f |
dfcf069d | 3837 | void |
7ab12479 JB |
3838 | init_window_once () |
3839 | { | |
44fa5b1e | 3840 | selected_frame = make_terminal_frame (); |
bc6c324f | 3841 | XSETFRAME (Vterminal_frame, selected_frame); |
44fa5b1e JB |
3842 | minibuf_window = selected_frame->minibuffer_window; |
3843 | selected_window = selected_frame->selected_window; | |
3844 | last_nonminibuf_frame = selected_frame; | |
5b03d3c0 RS |
3845 | |
3846 | window_initialized = 1; | |
7ab12479 JB |
3847 | } |
3848 | ||
dfcf069d | 3849 | void |
7ab12479 JB |
3850 | syms_of_window () |
3851 | { | |
543f5fb1 RS |
3852 | staticpro (&Qwindow_configuration_change_hook); |
3853 | Qwindow_configuration_change_hook | |
3854 | = intern ("window-configuration-change-hook"); | |
3855 | ||
7ab12479 JB |
3856 | Qwindowp = intern ("windowp"); |
3857 | staticpro (&Qwindowp); | |
3858 | ||
806b4d9b JB |
3859 | Qwindow_live_p = intern ("window-live-p"); |
3860 | staticpro (&Qwindow_live_p); | |
605be8af | 3861 | |
2cccc823 | 3862 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
3863 | staticpro (&Qtemp_buffer_show_hook); |
3864 | ||
7ab12479 JB |
3865 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
3866 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3867 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
3868 | Used by `with-output-to-temp-buffer'.\n\ |
3869 | If this function is used, then it must do the entire job of showing\n\ | |
3870 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
3871 | Vtemp_buffer_show_function = Qnil; |
3872 | ||
3873 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3874 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3875 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3876 | that the currently selected window is not acceptable.\n\ | |
3877 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3878 | work using this function."); | |
3879 | Vdisplay_buffer_function = Qnil; | |
3880 | ||
7ab12479 JB |
3881 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3882 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3883 | Vminibuf_scroll_window = Qnil; | |
3884 | ||
3885 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3886 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3887 | Vother_window_scroll_buffer = Qnil; | |
3888 | ||
44fa5b1e | 3889 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3890 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3891 | pop_up_frames = 0; |
7ab12479 | 3892 | |
44fa5b1e | 3893 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3894 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3895 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3896 | \n\ |
44fa5b1e JB |
3897 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3898 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3899 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3900 | |
a90712c2 RS |
3901 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3902 | "*List of buffer names that should have their own special frames.\n\ | |
3903 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 3904 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 3905 | \n\ |
524580a4 RS |
3906 | An element of the list can be a list instead of just a string.\n\ |
3907 | There are two ways to use a list as an element:\n\ | |
3908 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
3909 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3910 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
3911 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
4caa7448 RS |
3912 | All this is done by the function found in `special-display-function'.\n\ |
3913 | \n\ | |
3914 | If this variable appears \"not to work\", because you add a name to it\n\ | |
3915 | but that buffer still appears in the selected window, look at the\n\ | |
3916 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
3917 | Those variables take precedence over this one."); | |
a90712c2 RS |
3918 | Vspecial_display_buffer_names = Qnil; |
3919 | ||
3920 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3921 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3922 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3923 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3924 | using `special-display-function'.\n\ |
3548e138 | 3925 | \n\ |
524580a4 RS |
3926 | An element of the list can be a list instead of just a string.\n\ |
3927 | There are two ways to use a list as an element:\n\ | |
3928 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
3929 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3930 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
3931 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
4caa7448 RS |
3932 | All this is done by the function found in `special-display-function'.\n\ |
3933 | \n\ | |
3934 | If this variable appears \"not to work\", because you add a regexp to it\n\ | |
3935 | but the matching buffers still appear in the selected window, look at the\n\ | |
3936 | values of `same-window-buffer-names' and `same-window-regexps'.\n\ | |
3937 | Those variables take precedence over this one."); | |
a90712c2 RS |
3938 | Vspecial_display_regexps = Qnil; |
3939 | ||
3940 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3941 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3942 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3943 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3944 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3945 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3946 | \n\ |
3947 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3948 | or matches a regexp in `special-display-regexps'."); | |
3949 | Vspecial_display_function = Qnil; | |
3950 | ||
855d8627 RS |
3951 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
3952 | "*List of buffer names that should appear in the selected window.\n\ | |
3953 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
3954 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 3955 | in some other window.\n\ |
855d8627 RS |
3956 | \n\ |
3957 | An element of the list can be a cons cell instead of just a string.\n\ | |
3958 | Then the car must be a string, which specifies the buffer name.\n\ | |
3959 | This is for compatibility with `special-display-buffer-names';\n\ | |
3960 | the cdr of the cons cell is ignored.\n\ | |
3961 | \n\ | |
3962 | See also `same-window-regexps'."); | |
3963 | Vsame_window_buffer_names = Qnil; | |
3964 | ||
3965 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
3966 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
3967 | If a buffer name matches one of these regexps, then displaying it\n\ | |
3968 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
3969 | in the selected window, rather than making it appear in some other window.\n\ | |
3970 | \n\ | |
3971 | An element of the list can be a cons cell instead of just a string.\n\ | |
3972 | Then the car must be a string, which specifies the buffer name.\n\ | |
3973 | This is for compatibility with `special-display-buffer-names';\n\ | |
3974 | the cdr of the cons cell is ignored.\n\ | |
3975 | \n\ | |
3976 | See also `same-window-buffer-names'."); | |
3977 | Vsame_window_regexps = Qnil; | |
3978 | ||
7ab12479 JB |
3979 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3980 | "*Non-nil means display-buffer should make new windows."); | |
3981 | pop_up_windows = 1; | |
3982 | ||
3983 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3984 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3985 | next_screen_context_lines = 2; | |
3986 | ||
3987 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3988 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3989 | If there is only one window, it is split regardless of this value."); | |
3990 | split_height_threshold = 500; | |
3991 | ||
3992 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3993 | "*Delete any window less than this tall (including its mode line)."); | |
3994 | window_min_height = 4; | |
3995 | ||
3996 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3997 | "*Delete any window less than this wide."); | |
3998 | window_min_width = 10; | |
3999 | ||
9317a85d RS |
4000 | DEFVAR_BOOL ("scroll-preserve-screen-position", |
4001 | &scroll_preserve_screen_position, | |
4002 | "*Nonzero means scroll commands move point to keep its screen line unchanged."); | |
4003 | scroll_preserve_screen_position = 0; | |
4004 | ||
543f5fb1 RS |
4005 | DEFVAR_LISP ("window-configuration-change-hook", |
4006 | &Vwindow_configuration_change_hook, | |
4007 | "Functions to call when window configuration changes.\n\ | |
e3e041eb | 4008 | The selected frame is the one whose configuration has changed."); |
543f5fb1 RS |
4009 | Vwindow_configuration_change_hook = Qnil; |
4010 | ||
7ab12479 JB |
4011 | defsubr (&Sselected_window); |
4012 | defsubr (&Sminibuffer_window); | |
4013 | defsubr (&Swindow_minibuffer_p); | |
4014 | defsubr (&Swindowp); | |
806b4d9b | 4015 | defsubr (&Swindow_live_p); |
7ab12479 JB |
4016 | defsubr (&Spos_visible_in_window_p); |
4017 | defsubr (&Swindow_buffer); | |
4018 | defsubr (&Swindow_height); | |
4019 | defsubr (&Swindow_width); | |
4020 | defsubr (&Swindow_hscroll); | |
4021 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
4022 | defsubr (&Swindow_redisplay_end_trigger); |
4023 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 4024 | defsubr (&Swindow_edges); |
d5783c40 JB |
4025 | defsubr (&Scoordinates_in_window_p); |
4026 | defsubr (&Swindow_at); | |
7ab12479 JB |
4027 | defsubr (&Swindow_point); |
4028 | defsubr (&Swindow_start); | |
4029 | defsubr (&Swindow_end); | |
4030 | defsubr (&Sset_window_point); | |
4031 | defsubr (&Sset_window_start); | |
4032 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 4033 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
4034 | defsubr (&Swindow_display_table); |
4035 | defsubr (&Sset_window_display_table); | |
4036 | defsubr (&Snext_window); | |
4037 | defsubr (&Sprevious_window); | |
4038 | defsubr (&Sother_window); | |
4039 | defsubr (&Sget_lru_window); | |
4040 | defsubr (&Sget_largest_window); | |
4041 | defsubr (&Sget_buffer_window); | |
4042 | defsubr (&Sdelete_other_windows); | |
4043 | defsubr (&Sdelete_windows_on); | |
4044 | defsubr (&Sreplace_buffer_in_windows); | |
4045 | defsubr (&Sdelete_window); | |
4046 | defsubr (&Sset_window_buffer); | |
4047 | defsubr (&Sselect_window); | |
4628f7a4 EN |
4048 | defsubr (&Sspecial_display_p); |
4049 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
4050 | defsubr (&Sdisplay_buffer); |
4051 | defsubr (&Ssplit_window); | |
4052 | defsubr (&Senlarge_window); | |
4053 | defsubr (&Sshrink_window); | |
4054 | defsubr (&Sscroll_up); | |
4055 | defsubr (&Sscroll_down); | |
4056 | defsubr (&Sscroll_left); | |
4057 | defsubr (&Sscroll_right); | |
ccd0664b | 4058 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
4059 | defsubr (&Sscroll_other_window); |
4060 | defsubr (&Srecenter); | |
4061 | defsubr (&Smove_to_window_line); | |
4062 | defsubr (&Swindow_configuration_p); | |
4063 | defsubr (&Sset_window_configuration); | |
4064 | defsubr (&Scurrent_window_configuration); | |
4065 | defsubr (&Ssave_window_excursion); | |
2f8274be | 4066 | defsubr (&Scompare_window_configurations); |
7ab12479 JB |
4067 | } |
4068 | ||
dfcf069d | 4069 | void |
7ab12479 JB |
4070 | keys_of_window () |
4071 | { | |
4072 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
4073 | initial_define_key (control_x_map, '2', "split-window"); | |
4074 | initial_define_key (control_x_map, '0', "delete-window"); | |
4075 | initial_define_key (control_x_map, 'o', "other-window"); | |
4076 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
4077 | initial_define_key (control_x_map, '<', "scroll-left"); | |
4078 | initial_define_key (control_x_map, '>', "scroll-right"); | |
4079 | ||
4080 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
4081 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
4082 | initial_define_key (meta_map, 'v', "scroll-down"); | |
4083 | ||
4084 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
4085 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
4086 | } |