Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
37962e60 | 3 | Copyright (C) 1985, 86, 87, 93, 94, 95, 96 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" |
7ab12479 | 32 | |
806b4d9b | 33 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 JB |
34 | |
35 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
36 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
37 | ||
fd482be5 | 38 | void delete_all_subwindows (); |
7ab12479 JB |
39 | static struct window *decode_window(); |
40 | ||
41 | /* This is the window in which the terminal's cursor should | |
42 | be left when nothing is being done with it. This must | |
43 | always be a leaf window, and its buffer is selected by | |
44 | the top level editing loop at the end of each command. | |
45 | ||
46 | This value is always the same as | |
44fa5b1e | 47 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
48 | |
49 | Lisp_Object selected_window; | |
50 | ||
44fa5b1e | 51 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
52 | Note that you cannot test for minibufferness of an arbitrary window |
53 | by comparing against this; but you can test for minibufferness of | |
54 | the selected window. */ | |
55 | Lisp_Object minibuf_window; | |
56 | ||
57 | /* Non-nil means it is the window for C-M-v to scroll | |
58 | when the minibuffer is selected. */ | |
59 | Lisp_Object Vminibuf_scroll_window; | |
60 | ||
61 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
62 | Lisp_Object Vother_window_scroll_buffer; | |
63 | ||
7ab12479 JB |
64 | /* Non-nil means it's function to call to display temp buffers. */ |
65 | Lisp_Object Vtemp_buffer_show_function; | |
66 | ||
67 | /* If a window gets smaller than either of these, it is removed. */ | |
68 | int window_min_height; | |
69 | int window_min_width; | |
70 | ||
71 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
72 | int pop_up_windows; | |
73 | ||
44fa5b1e JB |
74 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
75 | int pop_up_frames; | |
7ab12479 JB |
76 | |
77 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 78 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
79 | |
80 | /* Function to call to handle Fdisplay_buffer. */ | |
81 | Lisp_Object Vdisplay_buffer_function; | |
82 | ||
a90712c2 RS |
83 | /* List of buffer *names* for buffers that should have their own frames. */ |
84 | Lisp_Object Vspecial_display_buffer_names; | |
85 | ||
86 | /* List of regexps for buffer names that should have their own frames. */ | |
87 | Lisp_Object Vspecial_display_regexps; | |
88 | ||
89 | /* Function to pop up a special frame. */ | |
90 | Lisp_Object Vspecial_display_function; | |
91 | ||
855d8627 RS |
92 | /* List of buffer *names* for buffers to appear in selected window. */ |
93 | Lisp_Object Vsame_window_buffer_names; | |
94 | ||
95 | /* List of regexps for buffer names to appear in selected window. */ | |
96 | Lisp_Object Vsame_window_regexps; | |
97 | ||
a58ec57d RS |
98 | /* Hook run at end of temp_output_buffer_show. */ |
99 | Lisp_Object Qtemp_buffer_show_hook; | |
100 | ||
37962e60 | 101 | /* Fdisplay_buffer always splits the largest window |
7ab12479 JB |
102 | if that window is more than this high. */ |
103 | int split_height_threshold; | |
104 | ||
105 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
106 | int next_screen_context_lines; | |
107 | ||
108 | /* Incremented for each window created. */ | |
109 | static int sequence_number; | |
110 | ||
5b03d3c0 RS |
111 | /* Nonzero after init_window_once has finished. */ |
112 | static int window_initialized; | |
113 | ||
543f5fb1 RS |
114 | /* Hook to run when window config changes. */ |
115 | Lisp_Object Qwindow_configuration_change_hook; | |
116 | Lisp_Object Vwindow_configuration_change_hook; | |
117 | ||
9317a85d RS |
118 | /* Nonzero means scroll commands try to put point |
119 | at the same screen height as previously. */ | |
120 | static int scroll_preserve_screen_position; | |
121 | ||
7d601aaa RS |
122 | /* Non-nil means we can split a frame even if it is "unsplittable". */ |
123 | static int frame_override_unsplittable; | |
124 | ||
7ab12479 | 125 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 | 126 | |
9317a85d RS |
127 | extern int scroll_margin; |
128 | ||
dba06815 | 129 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
130 | \f |
131 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
132 | "Returns t if OBJECT is a window.") |
133 | (object) | |
134 | Lisp_Object object; | |
7ab12479 | 135 | { |
413430c5 | 136 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
137 | } |
138 | ||
806b4d9b | 139 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
140 | "Returns t if OBJECT is a window which is currently visible.") |
141 | (object) | |
142 | Lisp_Object object; | |
605be8af | 143 | { |
413430c5 | 144 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
145 | } |
146 | ||
7ab12479 JB |
147 | Lisp_Object |
148 | make_window () | |
149 | { | |
cffec418 | 150 | Lisp_Object val; |
7ab12479 | 151 | register struct window *p; |
cffec418 KH |
152 | register struct Lisp_Vector *vec; |
153 | int i; | |
154 | ||
155 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
156 | for (i = 0; i < VECSIZE (struct window); i++) | |
157 | vec->contents[i] = Qnil; | |
158 | vec->size = VECSIZE (struct window); | |
159 | p = (struct window *)vec; | |
d834a2e9 KH |
160 | XSETFASTINT (p->sequence_number, ++sequence_number); |
161 | XSETFASTINT (p->left, 0); | |
162 | XSETFASTINT (p->top, 0); | |
163 | XSETFASTINT (p->height, 0); | |
164 | XSETFASTINT (p->width, 0); | |
165 | XSETFASTINT (p->hscroll, 0); | |
166 | XSETFASTINT (p->last_point_x, 0); | |
167 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
168 | p->start = Fmake_marker (); |
169 | p->pointm = Fmake_marker (); | |
d834a2e9 | 170 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 171 | p->frame = Qnil; |
7ab12479 JB |
172 | p->display_table = Qnil; |
173 | p->dedicated = Qnil; | |
cffec418 | 174 | XSETWINDOW (val, p); |
7ab12479 JB |
175 | return val; |
176 | } | |
177 | ||
178 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
179 | "Return the window that the cursor now appears in and commands apply to.") | |
180 | () | |
181 | { | |
182 | return selected_window; | |
183 | } | |
184 | ||
83762ba4 JB |
185 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
186 | "Return the window used now for minibuffers.\n\ | |
187 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
188 | used by that frame.") | |
189 | (frame) | |
190 | Lisp_Object frame; | |
7ab12479 | 191 | { |
83762ba4 | 192 | if (NILP (frame)) |
74112613 | 193 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
194 | else |
195 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 JB |
196 | |
197 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
198 | } |
199 | ||
605be8af | 200 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
201 | "Returns non-nil if WINDOW is a minibuffer window.") |
202 | (window) | |
203 | Lisp_Object window; | |
204 | { | |
205 | struct window *w = decode_window (window); | |
206 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
207 | } | |
208 | ||
209 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
210 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 211 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
212 | Returns nil if that position is scrolled vertically out of view.\n\ |
213 | POS defaults to point; WINDOW, to the selected window.") | |
214 | (pos, window) | |
215 | Lisp_Object pos, window; | |
216 | { | |
217 | register struct window *w; | |
218 | register int top; | |
219 | register int height; | |
220 | register int posint; | |
221 | register struct buffer *buf; | |
222 | struct position posval; | |
afdb2485 | 223 | int hscroll; |
7ab12479 | 224 | |
265a9e55 | 225 | if (NILP (pos)) |
5ce7b543 | 226 | posint = PT; |
7ab12479 JB |
227 | else |
228 | { | |
229 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
230 | posint = XINT (pos); | |
231 | } | |
232 | ||
605be8af | 233 | w = decode_window (window); |
7ab12479 | 234 | top = marker_position (w->start); |
afdb2485 | 235 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
236 | |
237 | if (posint < top) | |
238 | return Qnil; | |
239 | ||
240 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
241 | ||
242 | buf = XBUFFER (w->buffer); | |
3cd21523 RS |
243 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) |
244 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)) | |
7ab12479 | 245 | { |
44fa5b1e | 246 | /* If frame is up to date, |
7ab12479 JB |
247 | use the info recorded about how much text fit on it. */ |
248 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
249 | || (XFASTINT (w->window_end_vpos) < height)) | |
250 | return Qt; | |
251 | return Qnil; | |
252 | } | |
253 | else | |
254 | { | |
33eb4ede | 255 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
256 | return Qnil; |
257 | ||
61b5322b RS |
258 | /* w->start can be out of range. If it is, do something reasonable. */ |
259 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
260 | return Qnil; | |
261 | ||
7ab12479 | 262 | /* If that info is not correct, calculate afresh */ |
5a255667 KH |
263 | /* BUG FIX for the 7th arg (TOHPOS). |
264 | ||
265 | '0' is harmless, however, ' - (1 << (BITS_PER_SHORT - 1))' is | |
266 | more appropriate here. In case of HSCROLL > 0, this can avoid | |
267 | needless calculation done until (HPOS == 0). | |
268 | ||
269 | We want to determine if the position POSINT is in HEIGHT or | |
270 | not. We don't have to do calculation until (HPOS == 0). We | |
271 | can stop it when VPOS goes beyond HEIGHT. */ | |
4efffd80 | 272 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0, |
5a255667 | 273 | posint, height, - (1 << (BITS_PER_SHORT - 1)), |
535e0b8e | 274 | window_internal_width (w) - 1, |
e37f06d7 | 275 | hscroll, 0, w); |
7ab12479 JB |
276 | |
277 | return posval.vpos < height ? Qt : Qnil; | |
278 | } | |
279 | } | |
280 | \f | |
281 | static struct window * | |
282 | decode_window (window) | |
283 | register Lisp_Object window; | |
284 | { | |
265a9e55 | 285 | if (NILP (window)) |
7ab12479 JB |
286 | return XWINDOW (selected_window); |
287 | ||
605be8af | 288 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
289 | return XWINDOW (window); |
290 | } | |
291 | ||
292 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
293 | "Return the buffer that WINDOW is displaying.") | |
294 | (window) | |
295 | Lisp_Object window; | |
296 | { | |
297 | return decode_window (window)->buffer; | |
298 | } | |
299 | ||
300 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
301 | "Return the number of lines in WINDOW (including its mode line).") | |
302 | (window) | |
303 | Lisp_Object window; | |
304 | { | |
305 | return decode_window (window)->height; | |
306 | } | |
307 | ||
308 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
309 | "Return the number of display columns in WINDOW.\n\ |
310 | This is the width that is usable columns available for text in WINDOW.\n\ | |
311 | If you want to find out how many columns WINDOW takes up,\n\ | |
312 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
313 | (window) |
314 | Lisp_Object window; | |
315 | { | |
ee61d94e | 316 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
317 | } |
318 | ||
319 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
320 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
321 | (window) | |
322 | Lisp_Object window; | |
323 | { | |
324 | return decode_window (window)->hscroll; | |
325 | } | |
326 | ||
327 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
328 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
329 | NCOL should be zero or positive.") | |
330 | (window, ncol) | |
331 | register Lisp_Object window, ncol; | |
332 | { | |
333 | register struct window *w; | |
334 | ||
335 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 336 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 337 | w = decode_window (window); |
7f4161e0 | 338 | if (XINT (w->hscroll) != XINT (ncol)) |
1479ef51 | 339 | XBUFFER (w->buffer)->clip_changed = 1; /* Prevent redisplay shortcuts */ |
7ab12479 JB |
340 | w->hscroll = ncol; |
341 | return ncol; | |
342 | } | |
343 | ||
190eb263 RS |
344 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
345 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
346 | "Return WINDOW's redisplay end trigger value.\n\ | |
347 | See `set-window-redisplay-end-trigger' for more information.") | |
348 | (window) | |
349 | Lisp_Object window; | |
350 | { | |
351 | return decode_window (window)->redisplay_end_trigger; | |
352 | } | |
353 | ||
354 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
355 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
356 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
357 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
358 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
359 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
360 | with two arguments: WINDOW, and the end trigger value.\n\ | |
361 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
362 | (window, value) |
363 | register Lisp_Object window, value; | |
364 | { | |
365 | register struct window *w; | |
366 | ||
367 | w = decode_window (window); | |
368 | w->redisplay_end_trigger = value; | |
369 | return value; | |
370 | } | |
371 | ||
7ab12479 JB |
372 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
373 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 374 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
375 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
376 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
377 | and its mode-line.") | |
378 | (window) | |
379 | Lisp_Object window; | |
380 | { | |
381 | register struct window *w = decode_window (window); | |
382 | ||
383 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 384 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
385 | Fcons (make_number (XFASTINT (w->top) |
386 | + XFASTINT (w->height)), | |
387 | Qnil)))); | |
388 | } | |
389 | ||
d5783c40 JB |
390 | /* Test if the character at column *x, row *y is within window *w. |
391 | If it is not, return 0; | |
392 | if it is in the window's text area, | |
393 | set *x and *y to its location relative to the upper left corner | |
394 | of the window, and | |
395 | return 1; | |
396 | if it is on the window's modeline, return 2; | |
397 | if it is on the border between the window and its right sibling, | |
398 | return 3. */ | |
399 | static int | |
400 | coordinates_in_window (w, x, y) | |
401 | register struct window *w; | |
402 | register int *x, *y; | |
403 | { | |
404 | register int left = XINT (w->left); | |
111e5992 RS |
405 | register int right_edge = WINDOW_RIGHT_EDGE (w); |
406 | register int left_margin = WINDOW_LEFT_MARGIN (w); | |
407 | register int right_margin = WINDOW_RIGHT_MARGIN (w); | |
d5783c40 JB |
408 | register int window_height = XINT (w->height); |
409 | register int top = XFASTINT (w->top); | |
111e5992 RS |
410 | |
411 | if ( *x < left || *x >= right_edge | |
d5783c40 JB |
412 | || *y < top || *y >= top + window_height) |
413 | return 0; | |
414 | ||
111e5992 RS |
415 | if (left_margin != left && *x < left_margin && *x >= left) |
416 | return 3; | |
417 | ||
418 | if (right_margin != right_edge && *x >= right_margin && *x < right_edge) | |
419 | return 3; | |
420 | ||
d5783c40 JB |
421 | /* Is the character is the mode line? */ |
422 | if (*y == top + window_height - 1 | |
05c2896a | 423 | && ! MINI_WINDOW_P (w)) |
d5783c40 | 424 | return 2; |
37962e60 | 425 | |
111e5992 | 426 | *x -= WINDOW_LEFT_MARGIN (w); |
d5783c40 JB |
427 | *y -= top; |
428 | return 1; | |
429 | } | |
430 | ||
431 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
432 | Scoordinates_in_window_p, 2, 2, 0, | |
433 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 434 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 435 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 436 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 437 | frame.\n\ |
d5783c40 JB |
438 | If COORDINATES are in the text portion of WINDOW,\n\ |
439 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 440 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 441 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 442 | `vertical-line' is returned.") |
d5783c40 JB |
443 | (coordinates, window) |
444 | register Lisp_Object coordinates, window; | |
445 | { | |
446 | int x, y; | |
447 | ||
605be8af | 448 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
449 | CHECK_CONS (coordinates, 1); |
450 | x = XINT (Fcar (coordinates)); | |
451 | y = XINT (Fcdr (coordinates)); | |
452 | ||
453 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
454 | { | |
455 | case 0: /* NOT in window at all. */ | |
456 | return Qnil; | |
457 | ||
458 | case 1: /* In text part of window. */ | |
459 | return Fcons (x, y); | |
460 | ||
461 | case 2: /* In mode line of window. */ | |
462 | return Qmode_line; | |
37962e60 | 463 | |
d5783c40 | 464 | case 3: /* On right border of window. */ |
e5d77022 | 465 | return Qvertical_line; |
d5783c40 JB |
466 | |
467 | default: | |
468 | abort (); | |
469 | } | |
470 | } | |
471 | ||
7ab12479 | 472 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
473 | Lisp_Object. If x, y is on the window's modeline, set *part |
474 | to 1; if it is on the separating line between the window and its | |
475 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
476 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 477 | Lisp_Object |
44fa5b1e JB |
478 | window_from_coordinates (frame, x, y, part) |
479 | FRAME_PTR frame; | |
7ab12479 | 480 | int x, y; |
d5783c40 | 481 | int *part; |
7ab12479 JB |
482 | { |
483 | register Lisp_Object tem, first; | |
484 | ||
44fa5b1e | 485 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 486 | |
d5783c40 | 487 | do |
7ab12479 JB |
488 | { |
489 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
490 | ||
491 | if (found) | |
492 | { | |
d5783c40 | 493 | *part = found - 1; |
7ab12479 JB |
494 | return tem; |
495 | } | |
496 | ||
d5783c40 | 497 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 498 | } |
d5783c40 | 499 | while (! EQ (tem, first)); |
37962e60 | 500 | |
d5783c40 | 501 | return Qnil; |
7ab12479 JB |
502 | } |
503 | ||
ab17c3f2 | 504 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 505 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
506 | If omitted, FRAME defaults to the currently selected frame.\n\ |
507 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 508 | column 0.") |
b0c33a94 RS |
509 | (x, y, frame) |
510 | Lisp_Object x, y, frame; | |
7ab12479 JB |
511 | { |
512 | int part; | |
513 | ||
44fa5b1e | 514 | if (NILP (frame)) |
74112613 | 515 | XSETFRAME (frame, selected_frame); |
d5783c40 | 516 | else |
44fa5b1e | 517 | CHECK_LIVE_FRAME (frame, 2); |
b0c33a94 RS |
518 | CHECK_NUMBER (x, 0); |
519 | CHECK_NUMBER (y, 1); | |
7ab12479 | 520 | |
44fa5b1e | 521 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 522 | XINT (x), XINT (y), |
7ab12479 JB |
523 | &part); |
524 | } | |
525 | ||
526 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
527 | "Return current value of point in WINDOW.\n\ | |
528 | For a nonselected window, this is the value point would have\n\ | |
529 | if that window were selected.\n\ | |
530 | \n\ | |
531 | Note that, when WINDOW is the selected window and its buffer\n\ | |
532 | is also currently selected, the value returned is the same as (point).\n\ | |
533 | It would be more strictly correct to return the `top-level' value\n\ | |
534 | of point, outside of any save-excursion forms.\n\ | |
535 | But that is hard to define.") | |
536 | (window) | |
537 | Lisp_Object window; | |
538 | { | |
539 | register struct window *w = decode_window (window); | |
540 | ||
541 | if (w == XWINDOW (selected_window) | |
542 | && current_buffer == XBUFFER (w->buffer)) | |
543 | return Fpoint (); | |
544 | return Fmarker_position (w->pointm); | |
545 | } | |
546 | ||
547 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
548 | "Return position at which display currently starts in WINDOW.\n\ |
549 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
550 | (window) |
551 | Lisp_Object window; | |
552 | { | |
553 | return Fmarker_position (decode_window (window)->start); | |
554 | } | |
555 | ||
8646118f RS |
556 | /* This is text temporarily removed from the doc string below. |
557 | ||
7250968e RS |
558 | This function returns nil if the position is not currently known.\n\ |
559 | That happens when redisplay is preempted and doesn't finish.\n\ | |
560 | If in that case you want to compute where the end of the window would\n\ | |
561 | have been if redisplay had finished, do this:\n\ | |
562 | (save-excursion\n\ | |
563 | (goto-char (window-start window))\n\ | |
564 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
565 | (point))") */ |
566 | ||
567 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
568 | "Return position at which display currently ends in WINDOW.\n\ | |
569 | This is updated by redisplay, when it runs to completion.\n\ | |
570 | Simply changing the buffer text or setting `window-start'\n\ | |
571 | does not update this value.") | |
7ab12479 JB |
572 | (window) |
573 | Lisp_Object window; | |
574 | { | |
575 | Lisp_Object value; | |
576 | struct window *w = decode_window (window); | |
5a41ab94 RS |
577 | Lisp_Object buf; |
578 | ||
579 | buf = w->buffer; | |
580 | CHECK_BUFFER (buf, 0); | |
581 | ||
8646118f | 582 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
583 | /* If we don't know the end position, return nil. |
584 | The user can compute it with vertical-motion if he wants to. | |
585 | It would be nicer to do it automatically, | |
586 | but that's so slow that it would probably bother people. */ | |
587 | if (NILP (w->window_end_valid)) | |
588 | return Qnil; | |
8646118f | 589 | #endif |
7250968e | 590 | |
74112613 KH |
591 | XSETINT (value, |
592 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
593 | |
594 | return value; | |
595 | } | |
596 | ||
597 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
598 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
599 | (window, pos) | |
600 | Lisp_Object window, pos; | |
601 | { | |
602 | register struct window *w = decode_window (window); | |
603 | ||
604 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
605 | if (w == XWINDOW (selected_window)) | |
606 | Fgoto_char (pos); | |
607 | else | |
608 | set_marker_restricted (w->pointm, pos, w->buffer); | |
609 | ||
610 | return pos; | |
611 | } | |
612 | ||
613 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
614 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
615 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
616 | from overriding motion of point in order to display at this exact start.") | |
617 | (window, pos, noforce) | |
618 | Lisp_Object window, pos, noforce; | |
619 | { | |
620 | register struct window *w = decode_window (window); | |
621 | ||
622 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
623 | set_marker_restricted (w->start, pos, w->buffer); | |
624 | /* this is not right, but much easier than doing what is right. */ | |
625 | w->start_at_line_beg = Qnil; | |
265a9e55 | 626 | if (NILP (noforce)) |
7ab12479 JB |
627 | w->force_start = Qt; |
628 | w->update_mode_line = Qt; | |
d834a2e9 | 629 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 630 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
631 | if (!EQ (window, selected_window)) |
632 | windows_or_buffers_changed++; | |
7ab12479 JB |
633 | return pos; |
634 | } | |
635 | ||
636 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
637 | 1, 1, 0, | |
638 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 639 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
640 | (window) |
641 | Lisp_Object window; | |
642 | { | |
643 | return decode_window (window)->dedicated; | |
644 | } | |
645 | ||
d207b766 RS |
646 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
647 | Sset_window_dedicated_p, 2, 2, 0, | |
648 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
649 | If it is dedicated, Emacs will not automatically change\n\ | |
650 | which buffer appears in it.\n\ | |
651 | The second argument is the new value for the dedication flag;\n\ | |
652 | non-nil means yes.") | |
7ab12479 JB |
653 | (window, arg) |
654 | Lisp_Object window, arg; | |
655 | { | |
656 | register struct window *w = decode_window (window); | |
657 | ||
265a9e55 | 658 | if (NILP (arg)) |
7ab12479 JB |
659 | w->dedicated = Qnil; |
660 | else | |
d207b766 | 661 | w->dedicated = Qt; |
7ab12479 JB |
662 | |
663 | return w->dedicated; | |
664 | } | |
665 | ||
666 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
667 | 0, 1, 0, | |
668 | "Return the display-table that WINDOW is using.") | |
669 | (window) | |
670 | Lisp_Object window; | |
671 | { | |
672 | return decode_window (window)->display_table; | |
673 | } | |
674 | ||
675 | /* Get the display table for use currently on window W. | |
676 | This is either W's display table or W's buffer's display table. | |
677 | Ignore the specified tables if they are not valid; | |
678 | if no valid table is specified, return 0. */ | |
679 | ||
319315f1 | 680 | struct Lisp_Char_Table * |
7ab12479 JB |
681 | window_display_table (w) |
682 | struct window *w; | |
683 | { | |
684 | Lisp_Object tem; | |
685 | tem = w->display_table; | |
319315f1 RS |
686 | if (DISP_TABLE_P (tem)) |
687 | return XCHAR_TABLE (tem); | |
7ab12479 | 688 | tem = XBUFFER (w->buffer)->display_table; |
319315f1 RS |
689 | if (DISP_TABLE_P (tem)) |
690 | return XCHAR_TABLE (tem); | |
7ab12479 | 691 | tem = Vstandard_display_table; |
319315f1 RS |
692 | if (DISP_TABLE_P (tem)) |
693 | return XCHAR_TABLE (tem); | |
7ab12479 JB |
694 | return 0; |
695 | } | |
696 | ||
3a2712f9 | 697 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
698 | "Set WINDOW's display-table to TABLE.") |
699 | (window, table) | |
700 | register Lisp_Object window, table; | |
701 | { | |
702 | register struct window *w; | |
703 | register Lisp_Object z; /* Return value. */ | |
704 | ||
705 | w = decode_window (window); | |
706 | w->display_table = table; | |
707 | return table; | |
708 | } | |
709 | \f | |
710 | /* Record info on buffer window w is displaying | |
711 | when it is about to cease to display that buffer. */ | |
712 | static | |
713 | unshow_buffer (w) | |
714 | register struct window *w; | |
715 | { | |
12cae7c0 | 716 | Lisp_Object buf; |
7ab12479 | 717 | |
12cae7c0 | 718 | buf = w->buffer; |
7ab12479 JB |
719 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) |
720 | abort (); | |
721 | ||
86e48436 RS |
722 | if (w == XWINDOW (XBUFFER (buf)->last_selected_window)) |
723 | XBUFFER (buf)->last_selected_window = Qnil; | |
724 | ||
573f41ab | 725 | #if 0 |
7ab12479 JB |
726 | if (w == XWINDOW (selected_window) |
727 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
728 | /* Do this except when the selected window's buffer | |
729 | is being removed from some other window. */ | |
573f41ab RS |
730 | #endif |
731 | /* last_window_start records the start position that this buffer | |
732 | had in the last window to be disconnected from it. | |
733 | Now that this statement is unconditional, | |
734 | it is possible for the buffer to be displayed in the | |
735 | selected window, while last_window_start reflects another | |
736 | window which was recently showing the same buffer. | |
737 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
738 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
739 | ||
740 | /* Point in the selected window's buffer | |
741 | is actually stored in that buffer, and the window's pointm isn't used. | |
742 | So don't clobber point in that buffer. */ | |
743 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
744 | BUF_PT (XBUFFER (buf)) | |
745 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
746 | marker_position (w->pointm), | |
747 | BUF_ZV (XBUFFER (buf))); | |
748 | } | |
749 | ||
750 | /* Put replacement into the window structure in place of old. */ | |
751 | static | |
752 | replace_window (old, replacement) | |
753 | Lisp_Object old, replacement; | |
754 | { | |
755 | register Lisp_Object tem; | |
756 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
757 | ||
44fa5b1e JB |
758 | /* If OLD is its frame's root_window, then replacement is the new |
759 | root_window for that frame. */ | |
7ab12479 | 760 | |
7f4161e0 | 761 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 762 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
763 | |
764 | p->left = o->left; | |
765 | p->top = o->top; | |
766 | p->width = o->width; | |
767 | p->height = o->height; | |
768 | ||
769 | p->next = tem = o->next; | |
265a9e55 | 770 | if (!NILP (tem)) |
7ab12479 JB |
771 | XWINDOW (tem)->prev = replacement; |
772 | ||
773 | p->prev = tem = o->prev; | |
265a9e55 | 774 | if (!NILP (tem)) |
7ab12479 JB |
775 | XWINDOW (tem)->next = replacement; |
776 | ||
777 | p->parent = tem = o->parent; | |
265a9e55 | 778 | if (!NILP (tem)) |
7ab12479 JB |
779 | { |
780 | if (EQ (XWINDOW (tem)->vchild, old)) | |
781 | XWINDOW (tem)->vchild = replacement; | |
782 | if (EQ (XWINDOW (tem)->hchild, old)) | |
783 | XWINDOW (tem)->hchild = replacement; | |
784 | } | |
785 | ||
786 | /*** Here, if replacement is a vertical combination | |
787 | and so is its new parent, we should make replacement's | |
788 | children be children of that parent instead. ***/ | |
789 | } | |
790 | ||
791 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
792 | "Remove WINDOW from the display. Default is selected window.") | |
793 | (window) | |
794 | register Lisp_Object window; | |
543f5fb1 RS |
795 | { |
796 | delete_window (window); | |
797 | ||
798 | if (! NILP (Vwindow_configuration_change_hook) | |
799 | && ! NILP (Vrun_hooks)) | |
800 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
801 | ||
802 | return Qnil; | |
803 | } | |
804 | ||
805 | delete_window (window) | |
806 | register Lisp_Object window; | |
7ab12479 JB |
807 | { |
808 | register Lisp_Object tem, parent, sib; | |
809 | register struct window *p; | |
810 | register struct window *par; | |
811 | ||
605be8af JB |
812 | /* Because this function is called by other C code on non-leaf |
813 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
814 | so we can't decode_window here. */ | |
265a9e55 | 815 | if (NILP (window)) |
7ab12479 JB |
816 | window = selected_window; |
817 | else | |
818 | CHECK_WINDOW (window, 0); | |
7ab12479 | 819 | p = XWINDOW (window); |
605be8af JB |
820 | |
821 | /* It's okay to delete an already-deleted window. */ | |
822 | if (NILP (p->buffer) | |
823 | && NILP (p->hchild) | |
824 | && NILP (p->vchild)) | |
296b535c | 825 | return; |
605be8af | 826 | |
7ab12479 | 827 | parent = p->parent; |
265a9e55 | 828 | if (NILP (parent)) |
7ab12479 JB |
829 | error ("Attempt to delete minibuffer or sole ordinary window"); |
830 | par = XWINDOW (parent); | |
831 | ||
832 | windows_or_buffers_changed++; | |
29aeee73 | 833 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; |
7ab12479 | 834 | |
605be8af JB |
835 | /* Are we trying to delete any frame's selected window? */ |
836 | { | |
0def0403 | 837 | Lisp_Object frame, pwindow; |
605be8af | 838 | |
0def0403 RS |
839 | /* See if the frame's selected window is either WINDOW |
840 | or any subwindow of it, by finding all that window's parents | |
841 | and comparing each one with WINDOW. */ | |
842 | frame = WINDOW_FRAME (XWINDOW (window)); | |
843 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
844 | ||
845 | while (!NILP (pwindow)) | |
846 | { | |
847 | if (EQ (window, pwindow)) | |
848 | break; | |
849 | pwindow = XWINDOW (pwindow)->parent; | |
850 | } | |
851 | ||
852 | if (EQ (window, pwindow)) | |
605be8af | 853 | { |
89bca612 RS |
854 | Lisp_Object alternative; |
855 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
856 | |
857 | /* If we're about to delete the selected window on the | |
858 | selected frame, then we should use Fselect_window to select | |
859 | the new window. On the other hand, if we're about to | |
860 | delete the selected window on any other frame, we shouldn't do | |
861 | anything but set the frame's selected_window slot. */ | |
862 | if (EQ (window, selected_window)) | |
863 | Fselect_window (alternative); | |
864 | else | |
0def0403 | 865 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
866 | } |
867 | } | |
7ab12479 JB |
868 | |
869 | tem = p->buffer; | |
870 | /* tem is null for dummy parent windows | |
871 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 872 | if (!NILP (tem)) |
7ab12479 JB |
873 | { |
874 | unshow_buffer (p); | |
875 | unchain_marker (p->pointm); | |
876 | unchain_marker (p->start); | |
7ab12479 JB |
877 | } |
878 | ||
879 | tem = p->next; | |
265a9e55 | 880 | if (!NILP (tem)) |
7ab12479 JB |
881 | XWINDOW (tem)->prev = p->prev; |
882 | ||
883 | tem = p->prev; | |
265a9e55 | 884 | if (!NILP (tem)) |
7ab12479 JB |
885 | XWINDOW (tem)->next = p->next; |
886 | ||
887 | if (EQ (window, par->hchild)) | |
888 | par->hchild = p->next; | |
889 | if (EQ (window, par->vchild)) | |
890 | par->vchild = p->next; | |
891 | ||
892 | /* Find one of our siblings to give our space to. */ | |
893 | sib = p->prev; | |
265a9e55 | 894 | if (NILP (sib)) |
7ab12479 JB |
895 | { |
896 | /* If p gives its space to its next sibling, that sibling needs | |
897 | to have its top/left side pulled back to where p's is. | |
898 | set_window_{height,width} will re-position the sibling's | |
899 | children. */ | |
900 | sib = p->next; | |
7f4161e0 JB |
901 | XWINDOW (sib)->top = p->top; |
902 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
903 | } |
904 | ||
905 | /* Stretch that sibling. */ | |
265a9e55 | 906 | if (!NILP (par->vchild)) |
7ab12479 JB |
907 | set_window_height (sib, |
908 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
909 | 1); | |
265a9e55 | 910 | if (!NILP (par->hchild)) |
7ab12479 JB |
911 | set_window_width (sib, |
912 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
913 | 1); | |
914 | ||
915 | /* If parent now has only one child, | |
916 | put the child into the parent's place. */ | |
7ab12479 | 917 | tem = par->hchild; |
265a9e55 | 918 | if (NILP (tem)) |
7ab12479 | 919 | tem = par->vchild; |
265a9e55 | 920 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 921 | replace_window (parent, tem); |
605be8af JB |
922 | |
923 | /* Since we may be deleting combination windows, we must make sure that | |
924 | not only p but all its children have been marked as deleted. */ | |
925 | if (! NILP (p->hchild)) | |
926 | delete_all_subwindows (XWINDOW (p->hchild)); | |
927 | else if (! NILP (p->vchild)) | |
928 | delete_all_subwindows (XWINDOW (p->vchild)); | |
929 | ||
930 | /* Mark this window as deleted. */ | |
931 | p->buffer = p->hchild = p->vchild = Qnil; | |
7ab12479 JB |
932 | } |
933 | \f | |
7ab12479 | 934 | |
44fa5b1e | 935 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 936 | |
26f6279d JB |
937 | /* This comment supplies the doc string for `next-window', |
938 | for make-docfile to see. We cannot put this in the real DEFUN | |
939 | due to limits in the Unix cpp. | |
940 | ||
941 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 942 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
943 | If omitted, WINDOW defaults to the selected window.\n\ |
944 | \n\ | |
945 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
946 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
947 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
948 | minibuffer even if it is active.\n\ | |
949 | \n\ | |
44fa5b1e JB |
950 | Several frames may share a single minibuffer; if the minibuffer\n\ |
951 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 952 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
953 | set of windows even when the minibuffer is on another frame. If the\n\ |
954 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 955 | \n\ |
44fa5b1e JB |
956 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
957 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 958 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 959 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 960 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 961 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
962 | \n\ |
963 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
964 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
965 | windows, eventually ending up back at the window you started with.\n\ | |
966 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
967 | (window, minibuf, all_frames) */ |
968 | ||
969 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
970 | 0) | |
44fa5b1e JB |
971 | (window, minibuf, all_frames) |
972 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
973 | { |
974 | register Lisp_Object tem; | |
d5783c40 | 975 | Lisp_Object start_window; |
7ab12479 | 976 | |
265a9e55 | 977 | if (NILP (window)) |
7ab12479 JB |
978 | window = selected_window; |
979 | else | |
605be8af | 980 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 981 | |
d5783c40 JB |
982 | start_window = window; |
983 | ||
984 | /* minibuf == nil may or may not include minibuffers. | |
985 | Decide if it does. */ | |
265a9e55 | 986 | if (NILP (minibuf)) |
fbdc1545 RS |
987 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
988 | else if (! EQ (minibuf, Qt)) | |
989 | minibuf = Qlambda; | |
990 | /* Now minibuf can be t => count all minibuffer windows, | |
991 | lambda => count none of them, | |
992 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 993 | |
1bb80f72 | 994 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e | 995 | if (NILP (all_frames)) |
fbdc1545 | 996 | all_frames = (! EQ (minibuf, Qlambda) |
1bb80f72 RS |
997 | ? (FRAME_MINIBUF_WINDOW |
998 | (XFRAME | |
999 | (WINDOW_FRAME | |
1000 | (XWINDOW (window))))) | |
1001 | : Qnil); | |
89bca612 RS |
1002 | else if (EQ (all_frames, Qvisible)) |
1003 | ; | |
f812f9c6 RS |
1004 | else if (XFASTINT (all_frames) == 0) |
1005 | ; | |
1f4c5d09 RS |
1006 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1007 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1008 | return the first window on the frame. */ | |
1009 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1010 | else if (! EQ (all_frames, Qt)) |
1011 | all_frames = Qnil; | |
644b477c RS |
1012 | /* Now all_frames is t meaning search all frames, |
1013 | nil meaning search just current frame, | |
f812f9c6 RS |
1014 | visible meaning search just visible frames, |
1015 | 0 meaning search visible and iconified frames, | |
644b477c | 1016 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1017 | |
1018 | /* Do this loop at least once, to get the next window, and perhaps | |
1019 | again, if we hit the minibuffer and that is not acceptable. */ | |
1020 | do | |
1021 | { | |
1022 | /* Find a window that actually has a next one. This loop | |
1023 | climbs up the tree. */ | |
265a9e55 JB |
1024 | while (tem = XWINDOW (window)->next, NILP (tem)) |
1025 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1026 | window = tem; |
d5783c40 | 1027 | else |
7ab12479 | 1028 | { |
44fa5b1e JB |
1029 | /* We've reached the end of this frame. |
1030 | Which other frames are acceptable? */ | |
1031 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1032 | if (! NILP (all_frames)) |
1bb80f72 RS |
1033 | { |
1034 | Lisp_Object tem1; | |
1035 | ||
1036 | tem1 = tem; | |
1037 | tem = next_frame (tem, all_frames); | |
1038 | /* In the case where the minibuffer is active, | |
1039 | and we include its frame as well as the selected one, | |
1040 | next_frame may get stuck in that frame. | |
1041 | If that happens, go back to the selected frame | |
1042 | so we can complete the cycle. */ | |
1043 | if (EQ (tem, tem1)) | |
74112613 | 1044 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1045 | } |
44fa5b1e | 1046 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1047 | |
7ab12479 JB |
1048 | break; |
1049 | } | |
1050 | ||
1051 | window = tem; | |
d5783c40 | 1052 | |
7ab12479 JB |
1053 | /* If we're in a combination window, find its first child and |
1054 | recurse on that. Otherwise, we've found the window we want. */ | |
1055 | while (1) | |
1056 | { | |
265a9e55 | 1057 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1058 | window = XWINDOW (window)->hchild; |
265a9e55 | 1059 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1060 | window = XWINDOW (window)->vchild; |
1061 | else break; | |
1062 | } | |
1063 | } | |
5c4d25a6 | 1064 | /* Which windows are acceptable? |
d5783c40 | 1065 | Exit the loop and accept this window if |
fbdc1545 RS |
1066 | this isn't a minibuffer window, |
1067 | or we're accepting all minibuffer windows, | |
1068 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1069 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1070 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1071 | && ! EQ (minibuf, Qt) |
fbdc1545 | 1072 | && ! EQ (minibuf, window) |
7f4161e0 | 1073 | && ! EQ (window, start_window)); |
7ab12479 JB |
1074 | |
1075 | return window; | |
1076 | } | |
1077 | ||
26f6279d JB |
1078 | /* This comment supplies the doc string for `previous-window', |
1079 | for make-docfile to see. We cannot put this in the real DEFUN | |
1080 | due to limits in the Unix cpp. | |
1081 | ||
1082 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1083 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1084 | If omitted, WINDOW defaults to the selected window.\n\ |
1085 | \n\ | |
1086 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1087 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1088 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1089 | minibuffer even if it is active.\n\ | |
1090 | \n\ | |
44fa5b1e JB |
1091 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1092 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1093 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1094 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1095 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1096 | \n\ |
44fa5b1e JB |
1097 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1098 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1099 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1100 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1101 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1102 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1103 | \n\ |
1104 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1105 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1106 | windows, eventually ending up back at the window you started with.\n\ | |
1107 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1108 | (window, minibuf, all_frames) */ |
1109 | ||
1110 | ||
1111 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1112 | 0) | |
44fa5b1e JB |
1113 | (window, minibuf, all_frames) |
1114 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1115 | { |
1116 | register Lisp_Object tem; | |
d5783c40 | 1117 | Lisp_Object start_window; |
7ab12479 | 1118 | |
265a9e55 | 1119 | if (NILP (window)) |
7ab12479 JB |
1120 | window = selected_window; |
1121 | else | |
605be8af | 1122 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1123 | |
d5783c40 JB |
1124 | start_window = window; |
1125 | ||
1126 | /* minibuf == nil may or may not include minibuffers. | |
1127 | Decide if it does. */ | |
265a9e55 | 1128 | if (NILP (minibuf)) |
fbdc1545 RS |
1129 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1130 | else if (! EQ (minibuf, Qt)) | |
1131 | minibuf = Qlambda; | |
1132 | /* Now minibuf can be t => count all minibuffer windows, | |
1133 | lambda => count none of them, | |
1134 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1135 | |
44fa5b1e JB |
1136 | /* all_frames == nil doesn't specify which frames to include. |
1137 | Decide which frames it includes. */ | |
1138 | if (NILP (all_frames)) | |
fbdc1545 | 1139 | all_frames = (! EQ (minibuf, Qlambda) |
44fa5b1e JB |
1140 | ? (FRAME_MINIBUF_WINDOW |
1141 | (XFRAME | |
1142 | (WINDOW_FRAME | |
d5783c40 JB |
1143 | (XWINDOW (window))))) |
1144 | : Qnil); | |
89bca612 RS |
1145 | else if (EQ (all_frames, Qvisible)) |
1146 | ; | |
f812f9c6 RS |
1147 | else if (XFASTINT (all_frames) == 0) |
1148 | ; | |
1f4c5d09 RS |
1149 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1150 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1151 | return the first window on the frame. */ | |
1152 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1153 | else if (! EQ (all_frames, Qt)) |
1154 | all_frames = Qnil; | |
644b477c RS |
1155 | /* Now all_frames is t meaning search all frames, |
1156 | nil meaning search just current frame, | |
f812f9c6 RS |
1157 | visible meaning search just visible frames, |
1158 | 0 meaning search visible and iconified frames, | |
644b477c | 1159 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1160 | |
1161 | /* Do this loop at least once, to get the previous window, and perhaps | |
1162 | again, if we hit the minibuffer and that is not acceptable. */ | |
1163 | do | |
1164 | { | |
1165 | /* Find a window that actually has a previous one. This loop | |
1166 | climbs up the tree. */ | |
265a9e55 JB |
1167 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1168 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1169 | window = tem; |
d5783c40 | 1170 | else |
7ab12479 | 1171 | { |
44fa5b1e JB |
1172 | /* We have found the top window on the frame. |
1173 | Which frames are acceptable? */ | |
1174 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1175 | if (! NILP (all_frames)) |
dbc4e1c1 JB |
1176 | /* It's actually important that we use prev_frame here, |
1177 | rather than next_frame. All the windows acceptable | |
1178 | according to the given parameters should form a ring; | |
1179 | Fnext_window and Fprevious_window should go back and | |
1180 | forth around the ring. If we use next_frame here, | |
1181 | then Fnext_window and Fprevious_window take different | |
1182 | paths through the set of acceptable windows. | |
1183 | window_loop assumes that these `ring' requirement are | |
1184 | met. */ | |
1bb80f72 RS |
1185 | { |
1186 | Lisp_Object tem1; | |
1187 | ||
1188 | tem1 = tem; | |
1189 | tem = prev_frame (tem, all_frames); | |
1190 | /* In the case where the minibuffer is active, | |
1191 | and we include its frame as well as the selected one, | |
1192 | next_frame may get stuck in that frame. | |
1193 | If that happens, go back to the selected frame | |
1194 | so we can complete the cycle. */ | |
1195 | if (EQ (tem, tem1)) | |
74112613 | 1196 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1197 | } |
644b477c RS |
1198 | /* If this frame has a minibuffer, find that window first, |
1199 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1200 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1201 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1202 | else | |
644b477c | 1203 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1204 | |
7ab12479 JB |
1205 | break; |
1206 | } | |
1207 | ||
1208 | window = tem; | |
1209 | /* If we're in a combination window, find its last child and | |
1210 | recurse on that. Otherwise, we've found the window we want. */ | |
1211 | while (1) | |
1212 | { | |
265a9e55 | 1213 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1214 | window = XWINDOW (window)->hchild; |
265a9e55 | 1215 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1216 | window = XWINDOW (window)->vchild; |
1217 | else break; | |
265a9e55 | 1218 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1219 | window = tem; |
1220 | } | |
1221 | } | |
5c4d25a6 | 1222 | /* Which windows are acceptable? |
d5783c40 | 1223 | Exit the loop and accept this window if |
fbdc1545 RS |
1224 | this isn't a minibuffer window, |
1225 | or we're accepting all minibuffer windows, | |
1226 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1227 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1228 | while (MINI_WINDOW_P (XWINDOW (window)) |
fbdc1545 RS |
1229 | && ! EQ (minibuf, Qt) |
1230 | && ! EQ (minibuf, window) | |
1231 | && ! EQ (window, start_window)); | |
7ab12479 JB |
1232 | |
1233 | return window; | |
1234 | } | |
1235 | ||
62c07cc7 | 1236 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1237 | "Select the ARG'th different window on this frame.\n\ |
1238 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1239 | This command selects the window ARG steps away in that order.\n\ |
1240 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1241 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 EN |
1242 | (arg, all_frames) |
1243 | register Lisp_Object arg, all_frames; | |
7ab12479 JB |
1244 | { |
1245 | register int i; | |
1246 | register Lisp_Object w; | |
1247 | ||
413430c5 | 1248 | CHECK_NUMBER (arg, 0); |
7ab12479 | 1249 | w = selected_window; |
413430c5 | 1250 | i = XINT (arg); |
7ab12479 JB |
1251 | |
1252 | while (i > 0) | |
1253 | { | |
44fa5b1e | 1254 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1255 | i--; |
1256 | } | |
1257 | while (i < 0) | |
1258 | { | |
44fa5b1e | 1259 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1260 | i++; |
1261 | } | |
1262 | Fselect_window (w); | |
1263 | return Qnil; | |
1264 | } | |
1265 | \f | |
1266 | /* Look at all windows, performing an operation specified by TYPE | |
1267 | with argument OBJ. | |
75d8f668 | 1268 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1269 | Qnil, look at just the selected frame; |
89bca612 | 1270 | Qvisible, look at visible frames; |
75d8f668 | 1271 | a frame, just look at windows on that frame. |
7ab12479 JB |
1272 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1273 | */ | |
1274 | ||
1275 | enum window_loop | |
1276 | { | |
1277 | WINDOW_LOOP_UNUSED, | |
1278 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1279 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1280 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1281 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1282 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1283 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1284 | }; |
1285 | ||
1286 | static Lisp_Object | |
44fa5b1e | 1287 | window_loop (type, obj, mini, frames) |
7ab12479 | 1288 | enum window_loop type; |
44fa5b1e | 1289 | register Lisp_Object obj, frames; |
7ab12479 JB |
1290 | int mini; |
1291 | { | |
1292 | register Lisp_Object w; | |
1293 | register Lisp_Object best_window; | |
1294 | register Lisp_Object next_window; | |
4b206065 | 1295 | register Lisp_Object last_window; |
44fa5b1e | 1296 | FRAME_PTR frame; |
89bca612 RS |
1297 | Lisp_Object frame_arg; |
1298 | frame_arg = Qt; | |
44fa5b1e JB |
1299 | |
1300 | /* If we're only looping through windows on a particular frame, | |
1301 | frame points to that frame. If we're looping through windows | |
1302 | on all frames, frame is 0. */ | |
1303 | if (FRAMEP (frames)) | |
1304 | frame = XFRAME (frames); | |
1305 | else if (NILP (frames)) | |
1306 | frame = selected_frame; | |
7ab12479 | 1307 | else |
44fa5b1e | 1308 | frame = 0; |
89bca612 RS |
1309 | if (frame) |
1310 | frame_arg = Qlambda; | |
f812f9c6 RS |
1311 | else if (XFASTINT (frames) == 0) |
1312 | frame_arg = frames; | |
89bca612 RS |
1313 | else if (EQ (frames, Qvisible)) |
1314 | frame_arg = frames; | |
7ab12479 | 1315 | |
89bca612 RS |
1316 | /* frame_arg is Qlambda to stick to one frame, |
1317 | Qvisible to consider all visible frames, | |
1318 | or Qt otherwise. */ | |
1319 | ||
7ab12479 | 1320 | /* Pick a window to start with. */ |
017b2bad | 1321 | if (WINDOWP (obj)) |
4b206065 | 1322 | w = obj; |
44fa5b1e | 1323 | else if (frame) |
4b206065 | 1324 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1325 | else |
4b206065 JB |
1326 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1327 | ||
1328 | /* Figure out the last window we're going to mess with. Since | |
1329 | Fnext_window, given the same options, is guaranteed to go in a | |
1330 | ring, we can just use Fprevious_window to find the last one. | |
1331 | ||
1332 | We can't just wait until we hit the first window again, because | |
1333 | it might be deleted. */ | |
1334 | ||
89bca612 | 1335 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1336 | |
7ab12479 | 1337 | best_window = Qnil; |
4b206065 | 1338 | for (;;) |
7ab12479 | 1339 | { |
75d8f668 JB |
1340 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1341 | ||
7ab12479 JB |
1342 | /* Pick the next window now, since some operations will delete |
1343 | the current window. */ | |
89bca612 | 1344 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1345 | |
d29a5631 RS |
1346 | /* Note that we do not pay attention here to whether |
1347 | the frame is visible, since Fnext_window skips non-visible frames | |
1348 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1349 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1350 | || (mini && minibuf_level > 0)) |
1351 | switch (type) | |
1352 | { | |
1353 | case GET_BUFFER_WINDOW: | |
5c204627 RS |
1354 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj) |
1355 | /* Don't find any minibuffer window | |
1356 | except the one that is currently in use. */ | |
1357 | && (MINI_WINDOW_P (XWINDOW (w)) | |
1358 | ? EQ (w, minibuf_window) : 1)) | |
7ab12479 JB |
1359 | return w; |
1360 | break; | |
1361 | ||
1362 | case GET_LRU_WINDOW: | |
1363 | /* t as arg means consider only full-width windows */ | |
111e5992 | 1364 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w))) |
7ab12479 | 1365 | break; |
7ab12479 JB |
1366 | /* Ignore dedicated windows and minibuffers. */ |
1367 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1368 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1369 | break; |
265a9e55 | 1370 | if (NILP (best_window) |
7ab12479 JB |
1371 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1372 | > XFASTINT (XWINDOW (w)->use_time))) | |
1373 | best_window = w; | |
1374 | break; | |
1375 | ||
1376 | case DELETE_OTHER_WINDOWS: | |
1377 | if (XWINDOW (w) != XWINDOW (obj)) | |
1378 | Fdelete_window (w); | |
1379 | break; | |
1380 | ||
1381 | case DELETE_BUFFER_WINDOWS: | |
1382 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1383 | { | |
3548e138 RS |
1384 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1385 | ||
1386 | /* If this window is dedicated, and in a frame of its own, | |
1387 | kill the frame. */ | |
1388 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1389 | && !NILP (XWINDOW (w)->dedicated) | |
1390 | && other_visible_frames (f)) | |
7ab12479 | 1391 | { |
3548e138 RS |
1392 | /* Skip the other windows on this frame. |
1393 | There might be one, the minibuffer! */ | |
1394 | if (! EQ (w, last_window)) | |
1395 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1396 | { | |
1397 | /* As we go, check for the end of the loop. | |
1398 | We mustn't start going around a second time. */ | |
1399 | if (EQ (next_window, last_window)) | |
1400 | { | |
1401 | last_window = w; | |
1402 | break; | |
1403 | } | |
1404 | next_window = Fnext_window (next_window, | |
1405 | mini ? Qt : Qnil, | |
1406 | frame_arg); | |
1407 | } | |
1408 | /* Now we can safely delete the frame. */ | |
1409 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1410 | } |
1411 | else | |
3548e138 RS |
1412 | /* If we're deleting the buffer displayed in the only window |
1413 | on the frame, find a new buffer to display there. */ | |
1414 | if (NILP (XWINDOW (w)->parent)) | |
1415 | { | |
1416 | Lisp_Object new_buffer; | |
1417 | new_buffer = Fother_buffer (obj, Qnil); | |
1418 | if (NILP (new_buffer)) | |
1419 | new_buffer | |
1420 | = Fget_buffer_create (build_string ("*scratch*")); | |
1421 | Fset_window_buffer (w, new_buffer); | |
1422 | if (EQ (w, selected_window)) | |
1423 | Fset_buffer (XWINDOW (w)->buffer); | |
1424 | } | |
1425 | else | |
1426 | Fdelete_window (w); | |
7ab12479 JB |
1427 | } |
1428 | break; | |
1429 | ||
1430 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1431 | /* Ignore dedicated windows and minibuffers. */ |
1432 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1433 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1434 | break; |
1435 | { | |
1436 | struct window *best_window_ptr = XWINDOW (best_window); | |
1437 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1438 | if (NILP (best_window) |
1439 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1440 | > (XFASTINT (best_window_ptr->height) | |
1441 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1442 | best_window = w; |
1443 | } | |
1444 | break; | |
1445 | ||
1446 | case UNSHOW_BUFFER: | |
1447 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1448 | { | |
1449 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1450 | Lisp_Object another_buffer; |
38ab08d1 | 1451 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1452 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1453 | if (NILP (another_buffer)) |
7ab12479 JB |
1454 | another_buffer |
1455 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1456 | /* If this window is dedicated, and in a frame of its own, |
1457 | kill the frame. */ | |
1458 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1459 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1460 | && other_visible_frames (f)) |
45945a7b RS |
1461 | { |
1462 | /* Skip the other windows on this frame. | |
1463 | There might be one, the minibuffer! */ | |
1464 | if (! EQ (w, last_window)) | |
1465 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1466 | { | |
1467 | /* As we go, check for the end of the loop. | |
1468 | We mustn't start going around a second time. */ | |
1469 | if (EQ (next_window, last_window)) | |
1470 | { | |
1471 | last_window = w; | |
1472 | break; | |
1473 | } | |
1474 | next_window = Fnext_window (next_window, | |
1475 | mini ? Qt : Qnil, | |
1476 | frame_arg); | |
1477 | } | |
1478 | /* Now we can safely delete the frame. */ | |
1479 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1480 | } | |
38ab08d1 | 1481 | else |
38ab08d1 RS |
1482 | { |
1483 | /* Otherwise show a different buffer in the window. */ | |
1484 | XWINDOW (w)->dedicated = Qnil; | |
1485 | Fset_window_buffer (w, another_buffer); | |
1486 | if (EQ (w, selected_window)) | |
1487 | Fset_buffer (XWINDOW (w)->buffer); | |
1488 | } | |
7ab12479 JB |
1489 | } |
1490 | break; | |
1491 | } | |
4b206065 JB |
1492 | |
1493 | if (EQ (w, last_window)) | |
1494 | break; | |
1495 | ||
7ab12479 JB |
1496 | w = next_window; |
1497 | } | |
7ab12479 JB |
1498 | |
1499 | return best_window; | |
37962e60 | 1500 | } |
605be8af | 1501 | |
7ab12479 JB |
1502 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1503 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1504 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1505 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1506 | If FRAME is t, search all frames.\n\ |
1507 | If FRAME is nil, search only the selected frame.\n\ | |
1508 | If FRAME is a frame, search only that frame.") | |
1509 | (frame) | |
1510 | Lisp_Object frame; | |
7ab12479 JB |
1511 | { |
1512 | register Lisp_Object w; | |
1513 | /* First try for a window that is full-width */ | |
89bca612 | 1514 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1515 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1516 | return w; |
1517 | /* If none of them, try the rest */ | |
89bca612 | 1518 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1519 | } |
1520 | ||
1521 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1522 | "Return the largest window in area.\n\ | |
89bca612 | 1523 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1524 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1525 | If FRAME is t, search all frames.\n\ |
1526 | If FRAME is nil, search only the selected frame.\n\ | |
1527 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1528 | (frame) |
1529 | Lisp_Object frame; | |
7ab12479 JB |
1530 | { |
1531 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1532 | frame); |
7ab12479 JB |
1533 | } |
1534 | ||
1535 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1536 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1537 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1538 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1539 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1540 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1541 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1542 | (buffer, frame) |
1543 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1544 | { |
1545 | buffer = Fget_buffer (buffer); | |
017b2bad | 1546 | if (BUFFERP (buffer)) |
44fa5b1e | 1547 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1548 | else |
1549 | return Qnil; | |
1550 | } | |
1551 | ||
1552 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1553 | 0, 1, "", | |
44fa5b1e | 1554 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1555 | Only the frame WINDOW is on is affected.\n\ |
1556 | This function tries to reduce display jumps\n\ | |
1557 | by keeping the text previously visible in WINDOW\n\ | |
1558 | in the same place on the frame. Doing this depends on\n\ | |
1559 | the value of (window-start WINDOW), so if calling this function\n\ | |
1560 | in a program gives strange scrolling, make sure the window-start\n\ | |
1561 | value is reasonable when this function is called.") | |
7ab12479 JB |
1562 | (window) |
1563 | Lisp_Object window; | |
1564 | { | |
1565 | struct window *w; | |
00d3d838 | 1566 | int startpos; |
7ab12479 JB |
1567 | int top; |
1568 | ||
265a9e55 | 1569 | if (NILP (window)) |
7ab12479 JB |
1570 | window = selected_window; |
1571 | else | |
605be8af | 1572 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1573 | |
1574 | w = XWINDOW (window); | |
a2b38b3c | 1575 | |
00d3d838 KH |
1576 | startpos = marker_position (w->start); |
1577 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1578 | |
a2b38b3c RS |
1579 | if (MINI_WINDOW_P (w) && top > 0) |
1580 | error ("Can't expand minibuffer to full frame"); | |
1581 | ||
70728a80 | 1582 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1583 | |
00d3d838 KH |
1584 | /* Try to minimize scrolling, by setting the window start to the point |
1585 | will cause the text at the old window start to be at the same place | |
1586 | on the frame. But don't try to do this if the window start is | |
1587 | outside the visible portion (as might happen when the display is | |
1588 | not current, due to typeahead). */ | |
1589 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1590 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1591 | { | |
1592 | struct position pos; | |
1593 | struct buffer *obuf = current_buffer; | |
1594 | ||
1595 | Fset_buffer (w->buffer); | |
1596 | /* This computation used to temporarily move point, but that can | |
1597 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1598 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 1599 | |
00d3d838 KH |
1600 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
1601 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
5a255667 | 1602 | || FETCH_BYTE (pos.bufpos - 1) == '\n') ? Qt |
00d3d838 | 1603 | : Qnil); |
80622eec RS |
1604 | /* We need to do this, so that the window-scroll-functions |
1605 | get called. */ | |
4d047f50 | 1606 | w->optional_new_start = Qt; |
00d3d838 KH |
1607 | |
1608 | set_buffer_internal (obuf); | |
1609 | } | |
7ab12479 JB |
1610 | return Qnil; |
1611 | } | |
1612 | ||
1613 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1614 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1615 | "Delete all windows showing BUFFER.\n\ |
1616 | Optional second argument FRAME controls which frames are affected.\n\ | |
1617 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1618 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1619 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1620 | If a frame, delete only windows showing BUFFER in that frame.") |
1621 | (buffer, frame) | |
1622 | Lisp_Object buffer, frame; | |
7ab12479 | 1623 | { |
26f6279d JB |
1624 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1625 | expects. */ | |
1626 | if (! FRAMEP (frame)) | |
1627 | frame = NILP (frame) ? Qt : Qnil; | |
26f6279d | 1628 | |
265a9e55 | 1629 | if (!NILP (buffer)) |
7ab12479 JB |
1630 | { |
1631 | buffer = Fget_buffer (buffer); | |
1632 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1633 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1634 | } |
1635 | return Qnil; | |
1636 | } | |
1637 | ||
1638 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1639 | Sreplace_buffer_in_windows, | |
1640 | 1, 1, "bReplace buffer in windows: ", | |
1641 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1642 | (buffer) | |
1643 | Lisp_Object buffer; | |
1644 | { | |
265a9e55 | 1645 | if (!NILP (buffer)) |
7ab12479 JB |
1646 | { |
1647 | buffer = Fget_buffer (buffer); | |
1648 | CHECK_BUFFER (buffer, 0); | |
1649 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1650 | } | |
1651 | return Qnil; | |
1652 | } | |
ff58478b RS |
1653 | |
1654 | /* Replace BUFFER with some other buffer in all windows | |
1655 | of all frames, even those on other keyboards. */ | |
1656 | ||
1657 | void | |
1658 | replace_buffer_in_all_windows (buffer) | |
1659 | Lisp_Object buffer; | |
1660 | { | |
27abb84f | 1661 | #ifdef MULTI_KBOARD |
ff58478b RS |
1662 | Lisp_Object tail, frame; |
1663 | ||
ff58478b RS |
1664 | /* A single call to window_loop won't do the job |
1665 | because it only considers frames on the current keyboard. | |
1666 | So loop manually over frames, and handle each one. */ | |
1667 | FOR_EACH_FRAME (tail, frame) | |
27abb84f | 1668 | window_loop (UNSHOW_BUFFER, buffer, 0, frame); |
ff58478b RS |
1669 | #else |
1670 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1671 | #endif | |
1672 | } | |
7ab12479 JB |
1673 | \f |
1674 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1675 | |
1676 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1677 | might crash Emacs. */ | |
1678 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1679 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1680 | ||
1681 | /* Make sure that window_min_height and window_min_width are | |
1682 | not too small; if they are, set them to safe minima. */ | |
1683 | ||
1684 | static void | |
1685 | check_min_window_sizes () | |
1686 | { | |
1687 | /* Smaller values might permit a crash. */ | |
1688 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1689 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1690 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1691 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1692 | } | |
1693 | ||
1694 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1695 | minimum allowable size. */ | |
605be8af | 1696 | void |
a481b3ea | 1697 | check_frame_size (frame, rows, cols) |
605be8af JB |
1698 | FRAME_PTR frame; |
1699 | int *rows, *cols; | |
a481b3ea | 1700 | { |
628df3bf | 1701 | /* For height, we have to see: |
37962e60 | 1702 | whether the frame has a minibuffer, |
628df3bf JB |
1703 | whether it wants a mode line, and |
1704 | whether it has a menu bar. */ | |
a481b3ea | 1705 | int min_height = |
79f92720 JB |
1706 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1707 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1708 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1709 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1710 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1711 | |
1712 | if (*rows < min_height) | |
1713 | *rows = min_height; | |
1714 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1715 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1716 | } | |
1717 | ||
7ab12479 JB |
1718 | /* Normally the window is deleted if it gets too small. |
1719 | nodelete nonzero means do not do this. | |
1720 | (The caller should check later and do so if appropriate) */ | |
1721 | ||
1722 | set_window_height (window, height, nodelete) | |
1723 | Lisp_Object window; | |
1724 | int height; | |
1725 | int nodelete; | |
1726 | { | |
1727 | register struct window *w = XWINDOW (window); | |
1728 | register struct window *c; | |
1729 | int oheight = XFASTINT (w->height); | |
1730 | int top, pos, lastbot, opos, lastobot; | |
1731 | Lisp_Object child; | |
1732 | ||
a481b3ea JB |
1733 | check_min_window_sizes (); |
1734 | ||
7ab12479 | 1735 | if (!nodelete |
265a9e55 | 1736 | && ! NILP (w->parent) |
7ab12479 JB |
1737 | && height < window_min_height) |
1738 | { | |
543f5fb1 | 1739 | delete_window (window); |
7ab12479 JB |
1740 | return; |
1741 | } | |
1742 | ||
d834a2e9 | 1743 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1744 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1745 | windows_or_buffers_changed++; |
29aeee73 RS |
1746 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1747 | ||
d834a2e9 | 1748 | XSETFASTINT (w->height, height); |
265a9e55 | 1749 | if (!NILP (w->hchild)) |
7ab12479 | 1750 | { |
265a9e55 | 1751 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1752 | { |
1753 | XWINDOW (child)->top = w->top; | |
1754 | set_window_height (child, height, nodelete); | |
1755 | } | |
1756 | } | |
265a9e55 | 1757 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1758 | { |
1759 | lastbot = top = XFASTINT (w->top); | |
1760 | lastobot = 0; | |
265a9e55 | 1761 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1762 | { |
1763 | c = XWINDOW (child); | |
1764 | ||
1765 | opos = lastobot + XFASTINT (c->height); | |
1766 | ||
d834a2e9 | 1767 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1768 | |
1769 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1770 | ||
1771 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1772 | set_window_height (child, pos + top - lastbot, 1); | |
1773 | ||
1774 | /* Now advance child to next window, | |
1775 | and set lastbot if child was not just deleted. */ | |
1776 | lastbot = pos + top; | |
1777 | lastobot = opos; | |
1778 | } | |
1779 | /* Now delete any children that became too small. */ | |
1780 | if (!nodelete) | |
265a9e55 | 1781 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1782 | { |
1783 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1784 | } | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | /* Recursively set width of WINDOW and its inferiors. */ | |
1789 | ||
1790 | set_window_width (window, width, nodelete) | |
1791 | Lisp_Object window; | |
1792 | int width; | |
1793 | int nodelete; | |
1794 | { | |
1795 | register struct window *w = XWINDOW (window); | |
1796 | register struct window *c; | |
1797 | int owidth = XFASTINT (w->width); | |
1798 | int left, pos, lastright, opos, lastoright; | |
1799 | Lisp_Object child; | |
1800 | ||
abdced83 | 1801 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 | 1802 | { |
543f5fb1 | 1803 | delete_window (window); |
7ab12479 JB |
1804 | return; |
1805 | } | |
1806 | ||
d834a2e9 | 1807 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1808 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1809 | windows_or_buffers_changed++; |
29aeee73 RS |
1810 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1811 | ||
d834a2e9 | 1812 | XSETFASTINT (w->width, width); |
265a9e55 | 1813 | if (!NILP (w->vchild)) |
7ab12479 | 1814 | { |
265a9e55 | 1815 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1816 | { |
1817 | XWINDOW (child)->left = w->left; | |
1818 | set_window_width (child, width, nodelete); | |
1819 | } | |
1820 | } | |
265a9e55 | 1821 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1822 | { |
1823 | lastright = left = XFASTINT (w->left); | |
1824 | lastoright = 0; | |
265a9e55 | 1825 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1826 | { |
1827 | c = XWINDOW (child); | |
1828 | ||
1829 | opos = lastoright + XFASTINT (c->width); | |
1830 | ||
d834a2e9 | 1831 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1832 | |
1833 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1834 | ||
1835 | /* Inhibit deletion for becoming too small */ | |
1836 | set_window_width (child, pos + left - lastright, 1); | |
1837 | ||
1838 | /* Now advance child to next window, | |
1839 | and set lastright if child was not just deleted. */ | |
1840 | lastright = pos + left, lastoright = opos; | |
1841 | } | |
1842 | /* Delete children that became too small */ | |
1843 | if (!nodelete) | |
265a9e55 | 1844 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1845 | { |
1846 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1847 | } | |
1848 | } | |
1849 | } | |
1850 | \f | |
1d8d96fa | 1851 | int window_select_count; |
7ab12479 | 1852 | |
5b03d3c0 RS |
1853 | Lisp_Object |
1854 | Fset_window_buffer_unwind (obuf) | |
1855 | Lisp_Object obuf; | |
1856 | { | |
1857 | Fset_buffer (obuf); | |
1858 | return Qnil; | |
1859 | } | |
1860 | ||
7ab12479 JB |
1861 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, |
1862 | "Make WINDOW display BUFFER as its contents.\n\ | |
1863 | BUFFER can be a buffer or buffer name.") | |
1864 | (window, buffer) | |
1865 | register Lisp_Object window, buffer; | |
1866 | { | |
1867 | register Lisp_Object tem; | |
1868 | register struct window *w = decode_window (window); | |
5b03d3c0 | 1869 | int count = specpdl_ptr - specpdl; |
7ab12479 JB |
1870 | |
1871 | buffer = Fget_buffer (buffer); | |
1872 | CHECK_BUFFER (buffer, 1); | |
1873 | ||
265a9e55 | 1874 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1875 | error ("Attempt to display deleted buffer"); |
1876 | ||
1877 | tem = w->buffer; | |
265a9e55 | 1878 | if (NILP (tem)) |
7ab12479 JB |
1879 | error ("Window is deleted"); |
1880 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1881 | is first being set up. */ | |
1882 | { | |
265a9e55 | 1883 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1884 | error ("Window is dedicated to `%s'", |
1885 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1886 | |
1887 | unshow_buffer (w); | |
1888 | } | |
1889 | ||
1890 | w->buffer = buffer; | |
86e48436 RS |
1891 | |
1892 | if (EQ (window, selected_window)) | |
1893 | XBUFFER (w->buffer)->last_selected_window = window; | |
850ebd4f RS |
1894 | if (INTEGERP (XBUFFER (buffer)->display_count)) |
1895 | XSETINT (XBUFFER (buffer)->display_count, | |
296b535c | 1896 | XINT (XBUFFER (buffer)->display_count) + 1); |
86e48436 | 1897 | |
d834a2e9 | 1898 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1899 | w->window_end_valid = Qnil; |
dba06815 | 1900 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
1901 | Fset_marker (w->pointm, |
1902 | make_number (BUF_PT (XBUFFER (buffer))), | |
1903 | buffer); | |
1904 | set_marker_restricted (w->start, | |
1905 | make_number (XBUFFER (buffer)->last_window_start), | |
1906 | buffer); | |
1907 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1908 | w->force_start = Qnil; |
d834a2e9 | 1909 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1910 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1911 | windows_or_buffers_changed++; |
5b03d3c0 RS |
1912 | |
1913 | /* We must select BUFFER for running the window-scroll-functions. | |
1914 | If WINDOW is selected, switch permanently. | |
1915 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
1916 | if (EQ (window, selected_window)) |
1917 | Fset_buffer (buffer); | |
5b03d3c0 RS |
1918 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
1919 | because that might itself be a local variable. */ | |
1920 | else if (window_initialized) | |
1921 | { | |
1922 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
1923 | Fset_buffer (buffer); | |
1924 | } | |
1925 | ||
dba06815 RS |
1926 | if (! NILP (Vwindow_scroll_functions)) |
1927 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1928 | Fmarker_position (w->start)); | |
7ab12479 | 1929 | |
543f5fb1 RS |
1930 | if (! NILP (Vwindow_configuration_change_hook) |
1931 | && ! NILP (Vrun_hooks)) | |
1932 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1933 | ||
5b03d3c0 RS |
1934 | unbind_to (count, Qnil); |
1935 | ||
7ab12479 JB |
1936 | return Qnil; |
1937 | } | |
1938 | ||
1939 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1940 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1941 | The main editor command loop selects the buffer of the selected window\n\ | |
1942 | before each command.") | |
1943 | (window) | |
1944 | register Lisp_Object window; | |
1945 | { | |
1946 | register struct window *w; | |
1947 | register struct window *ow = XWINDOW (selected_window); | |
1948 | ||
605be8af | 1949 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1950 | |
1951 | w = XWINDOW (window); | |
1952 | ||
265a9e55 | 1953 | if (NILP (w->buffer)) |
7ab12479 JB |
1954 | error ("Trying to select deleted window or non-leaf window"); |
1955 | ||
d834a2e9 | 1956 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
1957 | if (EQ (window, selected_window)) |
1958 | return window; | |
1959 | ||
1960 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1961 | ow->buffer); | |
1962 | ||
1963 | selected_window = window; | |
44fa5b1e | 1964 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) |
7ab12479 | 1965 | { |
44fa5b1e | 1966 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
1967 | /* Use this rather than Fhandle_switch_frame |
1968 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
1969 | move around in the state where a minibuffer in a separate | |
1970 | frame is active. */ | |
1971 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1972 | } |
1973 | else | |
44fa5b1e | 1974 | selected_frame->selected_window = window; |
7ab12479 JB |
1975 | |
1976 | record_buffer (w->buffer); | |
1977 | Fset_buffer (w->buffer); | |
1978 | ||
86e48436 RS |
1979 | XBUFFER (w->buffer)->last_selected_window = window; |
1980 | ||
7ab12479 JB |
1981 | /* Go to the point recorded in the window. |
1982 | This is important when the buffer is in more | |
1983 | than one window. It also matters when | |
1984 | redisplay_window has altered point after scrolling, | |
1985 | because it makes the change only in the window. */ | |
1986 | { | |
1987 | register int new_point = marker_position (w->pointm); | |
1988 | if (new_point < BEGV) | |
1989 | SET_PT (BEGV); | |
a9c95e08 | 1990 | else if (new_point > ZV) |
7ab12479 JB |
1991 | SET_PT (ZV); |
1992 | else | |
1993 | SET_PT (new_point); | |
1994 | } | |
1995 | ||
1996 | windows_or_buffers_changed++; | |
1997 | return window; | |
1998 | } | |
1999 | ||
441a127e RS |
2000 | /* Deiconify the frame containing the window WINDOW, |
2001 | unless it is the selected frame; | |
2002 | then return WINDOW. | |
2003 | ||
2004 | The reason for the exception for the selected frame | |
2005 | is that it seems better not to change the selected frames visibility | |
2006 | merely because of displaying a different buffer in it. | |
2007 | The deiconification is useful when a buffer gets shown in | |
2008 | another frame that you were not using lately. */ | |
d07f802a RS |
2009 | |
2010 | static Lisp_Object | |
2011 | display_buffer_1 (window) | |
2012 | Lisp_Object window; | |
2013 | { | |
d07f802a RS |
2014 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
2015 | FRAME_SAMPLE_VISIBILITY (f); | |
60117126 RS |
2016 | if (f != selected_frame) |
2017 | { | |
2018 | if (FRAME_ICONIFIED_P (f)) | |
2019 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
37962e60 | 2020 | else if (FRAME_VISIBLE_P (f)) |
60117126 RS |
2021 | Fraise_frame (WINDOW_FRAME (XWINDOW (window))); |
2022 | } | |
d07f802a RS |
2023 | return window; |
2024 | } | |
2025 | ||
4628f7a4 | 2026 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
0f7d64d2 GV |
2027 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially.\n\ |
2028 | The value is actually t if the frame should be called with default frame\n\ | |
2029 | parameters, and a list of frame parameters if they were specified.\n\ | |
4628f7a4 EN |
2030 | See `special-display-buffer-names', and `special-display-regexps'.") |
2031 | (buffer_name) | |
2032 | Lisp_Object buffer_name; | |
2033 | { | |
2034 | Lisp_Object tem; | |
2035 | ||
2036 | CHECK_STRING (buffer_name, 1); | |
2037 | ||
2038 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
2039 | if (!NILP (tem)) | |
2040 | return Qt; | |
2041 | ||
2042 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
2043 | if (!NILP (tem)) | |
2044 | return XCDR (tem); | |
2045 | ||
2046 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2047 | { | |
2048 | Lisp_Object car = XCAR (tem); | |
2049 | if (STRINGP (car) | |
2050 | && fast_string_match (car, buffer_name) >= 0) | |
2051 | return Qt; | |
2052 | else if (CONSP (car) | |
2053 | && STRINGP (XCAR (car)) | |
2054 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2055 | return XCDR (tem); | |
2056 | } | |
2057 | return Qnil; | |
2058 | } | |
2059 | ||
2060 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
0f7d64d2 | 2061 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window.\n\ |
4628f7a4 EN |
2062 | See `same-window-buffer-names' and `same-window-regexps'.") |
2063 | (buffer_name) | |
2064 | Lisp_Object buffer_name; | |
2065 | { | |
2066 | Lisp_Object tem; | |
2067 | ||
2068 | CHECK_STRING (buffer_name, 1); | |
2069 | ||
2070 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2071 | if (!NILP (tem)) | |
2072 | return Qt; | |
2073 | ||
2074 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2075 | if (!NILP (tem)) | |
2076 | return Qt; | |
2077 | ||
2078 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2079 | { | |
2080 | Lisp_Object car = XCAR (tem); | |
2081 | if (STRINGP (car) | |
2082 | && fast_string_match (car, buffer_name) >= 0) | |
2083 | return Qt; | |
2084 | else if (CONSP (car) | |
2085 | && STRINGP (XCAR (car)) | |
2086 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2087 | return Qt; | |
2088 | } | |
2089 | return Qnil; | |
2090 | } | |
2091 | ||
35aaf00c | 2092 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
869e65bb | 2093 | "bDisplay buffer: \nP", |
7ab12479 JB |
2094 | "Make BUFFER appear in some window but don't select it.\n\ |
2095 | BUFFER can be a buffer or a buffer name.\n\ | |
2096 | If BUFFER is shown already in some window, just use that one,\n\ | |
2097 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2098 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2099 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 RS |
2100 | Returns the window displaying BUFFER.\n\ |
2101 | \n\ | |
2102 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2103 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
2104 | buffer names are handled.") | |
7ab12479 JB |
2105 | (buffer, not_this_window) |
2106 | register Lisp_Object buffer, not_this_window; | |
2107 | { | |
a90712c2 | 2108 | register Lisp_Object window, tem; |
7ab12479 JB |
2109 | |
2110 | buffer = Fget_buffer (buffer); | |
2111 | CHECK_BUFFER (buffer, 0); | |
2112 | ||
265a9e55 | 2113 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2114 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2115 | ||
265a9e55 | 2116 | if (NILP (not_this_window) |
7ab12479 | 2117 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2118 | return display_buffer_1 (selected_window); |
7ab12479 | 2119 | |
855d8627 RS |
2120 | /* See if the user has specified this buffer should appear |
2121 | in the selected window. */ | |
2122 | if (NILP (not_this_window)) | |
2123 | { | |
4628f7a4 | 2124 | tem = Fsame_window_p (XBUFFER (buffer)->name); |
855d8627 | 2125 | if (!NILP (tem)) |
c63dc4a2 RS |
2126 | { |
2127 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2128 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2129 | } |
855d8627 RS |
2130 | } |
2131 | ||
e8edb3ae | 2132 | /* If pop_up_frames, |
73dc5198 KH |
2133 | look for a window showing BUFFER on any visible or iconified frame. |
2134 | Otherwise search only the current frame. */ | |
2135 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
2136 | XSETFASTINT (tem, 0); | |
2137 | else | |
73dc5198 KH |
2138 | XSETFRAME (tem, last_nonminibuf_frame); |
2139 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
2140 | if (!NILP (window) |
2141 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 2142 | { |
d07f802a | 2143 | return display_buffer_1 (window); |
f812f9c6 | 2144 | } |
7ab12479 | 2145 | |
a90712c2 | 2146 | /* Certain buffer names get special handling. */ |
4628f7a4 | 2147 | if (!NILP (Vspecial_display_function)) |
a90712c2 | 2148 | { |
4628f7a4 EN |
2149 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2150 | if (EQ (tem, Qt)) | |
a90712c2 | 2151 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2152 | if (CONSP (tem)) |
2153 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2154 | } |
2155 | ||
44fa5b1e JB |
2156 | /* If there are no frames open that have more than a minibuffer, |
2157 | we need to create a new frame. */ | |
2158 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2159 | { |
a90712c2 | 2160 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2161 | Fset_window_buffer (window, buffer); |
d07f802a | 2162 | return display_buffer_1 (window); |
7ab12479 | 2163 | } |
7ab12479 | 2164 | |
43bad991 | 2165 | if (pop_up_windows |
44fa5b1e | 2166 | || FRAME_MINIBUF_ONLY_P (selected_frame) |
cee67da9 RS |
2167 | /* If the current frame is a special display frame, |
2168 | don't try to reuse its windows. */ | |
2169 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 | 2170 | ) |
7ab12479 | 2171 | { |
12cae7c0 KH |
2172 | Lisp_Object frames; |
2173 | ||
37962e60 | 2174 | frames = Qnil; |
44fa5b1e | 2175 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) |
74112613 | 2176 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2177 | /* Don't try to create a window if would get an error */ |
2178 | if (split_height_threshold < window_min_height << 1) | |
2179 | split_height_threshold = window_min_height << 1; | |
2180 | ||
cee67da9 RS |
2181 | /* Note that both Fget_largest_window and Fget_lru_window |
2182 | ignore minibuffers and dedicated windows. | |
2183 | This means they can return nil. */ | |
7ab12479 | 2184 | |
cee67da9 RS |
2185 | /* If the frame we would try to split cannot be split, |
2186 | try other frames. */ | |
2187 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
2188 | : last_nonminibuf_frame)) | |
2189 | { | |
2190 | /* Try visible frames first. */ | |
2191 | window = Fget_largest_window (Qvisible); | |
2192 | /* If that didn't work, try iconified frames. */ | |
2193 | if (NILP (window)) | |
2194 | window = Fget_largest_window (make_number (0)); | |
2195 | if (NILP (window)) | |
2196 | window = Fget_largest_window (Qt); | |
2197 | } | |
2198 | else | |
2199 | window = Fget_largest_window (frames); | |
2200 | ||
92cca945 RS |
2201 | /* If we got a tall enough full-width window that can be split, |
2202 | split it. */ | |
265a9e55 | 2203 | if (!NILP (window) |
92cca945 | 2204 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2205 | && window_height (window) >= split_height_threshold |
111e5992 | 2206 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2207 | window = Fsplit_window (window, Qnil, Qnil); |
2208 | else | |
2209 | { | |
1942f68f RS |
2210 | Lisp_Object upper, lower, other; |
2211 | ||
44fa5b1e | 2212 | window = Fget_lru_window (frames); |
92cca945 RS |
2213 | /* If the LRU window is selected, and big enough, |
2214 | and can be split, split it. */ | |
cee67da9 | 2215 | if (!NILP (window) |
92cca945 | 2216 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2217 | && (EQ (window, selected_window) |
2218 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2219 | && window_height (window) >= window_min_height << 1) |
2220 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 RS |
2221 | /* If Fget_lru_window returned nil, try other approaches. */ |
2222 | /* Try visible frames first. */ | |
2223 | if (NILP (window)) | |
2224 | window = Fget_largest_window (Qvisible); | |
2225 | /* If that didn't work, try iconified frames. */ | |
2226 | if (NILP (window)) | |
2227 | window = Fget_largest_window (make_number (0)); | |
2228 | /* Try invisible frames. */ | |
2229 | if (NILP (window)) | |
2230 | window = Fget_largest_window (Qt); | |
2231 | /* As a last resort, make a new frame. */ | |
2232 | if (NILP (window)) | |
2233 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2234 | /* If window appears above or below another, |
2235 | even out their heights. */ | |
cac66e4f | 2236 | other = upper = lower = Qnil; |
1942f68f RS |
2237 | if (!NILP (XWINDOW (window)->prev)) |
2238 | other = upper = XWINDOW (window)->prev, lower = window; | |
2239 | if (!NILP (XWINDOW (window)->next)) | |
2240 | other = lower = XWINDOW (window)->next, upper = window; | |
2241 | if (!NILP (other) | |
2242 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
296b535c KH |
2243 | && !EQ (XWINDOW (other)->top, XWINDOW (window)->top) |
2244 | && (XFASTINT (XWINDOW (other)->height) | |
2245 | > XFASTINT (XWINDOW (window)->height))) | |
1942f68f | 2246 | { |
296b535c KH |
2247 | int total = (XFASTINT (XWINDOW (other)->height) |
2248 | + XFASTINT (XWINDOW (window)->height)); | |
8d77c0c8 KH |
2249 | Lisp_Object old_selected_window; |
2250 | old_selected_window = selected_window; | |
1942f68f | 2251 | |
8d77c0c8 | 2252 | selected_window = upper; |
296b535c KH |
2253 | change_window_height ((total / 2 |
2254 | - XFASTINT (XWINDOW (upper)->height)), | |
2255 | 0); | |
1942f68f RS |
2256 | selected_window = old_selected_window; |
2257 | } | |
7ab12479 JB |
2258 | } |
2259 | } | |
2260 | else | |
2261 | window = Fget_lru_window (Qnil); | |
2262 | ||
2263 | Fset_window_buffer (window, buffer); | |
d07f802a | 2264 | return display_buffer_1 (window); |
7ab12479 JB |
2265 | } |
2266 | ||
2267 | void | |
2268 | temp_output_buffer_show (buf) | |
2269 | register Lisp_Object buf; | |
2270 | { | |
2271 | register struct buffer *old = current_buffer; | |
2272 | register Lisp_Object window; | |
2273 | register struct window *w; | |
2274 | ||
2275 | Fset_buffer (buf); | |
c6367666 | 2276 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2277 | BEGV = BEG; |
2278 | ZV = Z; | |
2279 | SET_PT (BEG); | |
1479ef51 | 2280 | XBUFFER (buf)->clip_changed = 1; |
7ab12479 JB |
2281 | set_buffer_internal (old); |
2282 | ||
2283 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2284 | call1 (Vtemp_buffer_show_function, buf); | |
2285 | else | |
2286 | { | |
2287 | window = Fdisplay_buffer (buf, Qnil); | |
2288 | ||
44fa5b1e JB |
2289 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) |
2290 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7ab12479 JB |
2291 | Vminibuf_scroll_window = window; |
2292 | w = XWINDOW (window); | |
d834a2e9 | 2293 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
2294 | set_marker_restricted (w->start, make_number (1), buf); |
2295 | set_marker_restricted (w->pointm, make_number (1), buf); | |
a58ec57d | 2296 | |
37962e60 | 2297 | /* Run temp-buffer-show-hook, with the chosen window selected. */ |
f52cca03 | 2298 | if (!NILP (Vrun_hooks)) |
2cccc823 | 2299 | { |
f52cca03 RS |
2300 | Lisp_Object tem; |
2301 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2302 | if (!NILP (tem)) |
2303 | { | |
f52cca03 RS |
2304 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2305 | if (!NILP (tem)) | |
2306 | { | |
2307 | int count = specpdl_ptr - specpdl; | |
2cccc823 | 2308 | |
f52cca03 RS |
2309 | /* Select the window that was chosen, for running the hook. */ |
2310 | record_unwind_protect (Fset_window_configuration, | |
2311 | Fcurrent_window_configuration (Qnil)); | |
2cccc823 | 2312 | |
f52cca03 RS |
2313 | Fselect_window (window); |
2314 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
2315 | unbind_to (count, Qnil); | |
2316 | } | |
2cccc823 RS |
2317 | } |
2318 | } | |
2319 | } | |
7ab12479 JB |
2320 | } |
2321 | \f | |
2322 | static | |
2323 | make_dummy_parent (window) | |
2324 | Lisp_Object window; | |
2325 | { | |
cffec418 | 2326 | Lisp_Object new; |
7ab12479 | 2327 | register struct window *o, *p; |
cffec418 KH |
2328 | register struct Lisp_Vector *vec; |
2329 | int i; | |
7ab12479 | 2330 | |
cffec418 KH |
2331 | o = XWINDOW (window); |
2332 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2333 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2334 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2335 | vec->size = VECSIZE (struct window); | |
2336 | p = (struct window *)vec; | |
2337 | XSETWINDOW (new, p); | |
7ab12479 | 2338 | |
d834a2e9 | 2339 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2340 | |
2341 | /* Put new into window structure in place of window */ | |
2342 | replace_window (window, new); | |
2343 | ||
2344 | o->next = Qnil; | |
2345 | o->prev = Qnil; | |
2346 | o->vchild = Qnil; | |
2347 | o->hchild = Qnil; | |
2348 | o->parent = new; | |
2349 | ||
2350 | p->start = Qnil; | |
2351 | p->pointm = Qnil; | |
2352 | p->buffer = Qnil; | |
2353 | } | |
2354 | ||
2355 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2356 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2357 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 2358 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
7ab12479 | 2359 | and put SIZE columns in the first of the pair.") |
77ae0fe3 KH |
2360 | (window, size, horflag) |
2361 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
2362 | { |
2363 | register Lisp_Object new; | |
2364 | register struct window *o, *p; | |
c0807608 | 2365 | FRAME_PTR fo; |
77ae0fe3 | 2366 | register int size_int; |
7ab12479 | 2367 | |
265a9e55 | 2368 | if (NILP (window)) |
7ab12479 JB |
2369 | window = selected_window; |
2370 | else | |
605be8af | 2371 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2372 | |
2373 | o = XWINDOW (window); | |
c0807608 | 2374 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 2375 | |
77ae0fe3 | 2376 | if (NILP (size)) |
7ab12479 | 2377 | { |
265a9e55 | 2378 | if (!NILP (horflag)) |
c0807608 KH |
2379 | /* Calculate the size of the left-hand window, by dividing |
2380 | the usable space in columns by two. */ | |
a59fed7e | 2381 | size_int = XFASTINT (o->width) >> 1; |
7ab12479 | 2382 | else |
77ae0fe3 | 2383 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
2384 | } |
2385 | else | |
2386 | { | |
77ae0fe3 KH |
2387 | CHECK_NUMBER (size, 1); |
2388 | size_int = XINT (size); | |
7ab12479 JB |
2389 | } |
2390 | ||
2391 | if (MINI_WINDOW_P (o)) | |
2392 | error ("Attempt to split minibuffer window"); | |
7d601aaa | 2393 | else if (FRAME_NO_SPLIT_P (fo) && ! frame_override_unsplittable) |
44fa5b1e | 2394 | error ("Attempt to split unsplittable frame"); |
7ab12479 | 2395 | |
a481b3ea | 2396 | check_min_window_sizes (); |
7ab12479 | 2397 | |
265a9e55 | 2398 | if (NILP (horflag)) |
7ab12479 | 2399 | { |
77ae0fe3 KH |
2400 | if (size_int < window_min_height) |
2401 | error ("Window height %d too small (after splitting)", size_int); | |
2402 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 2403 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 2404 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
2405 | if (NILP (o->parent) |
2406 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2407 | { |
2408 | make_dummy_parent (window); | |
2409 | new = o->parent; | |
2410 | XWINDOW (new)->vchild = window; | |
2411 | } | |
2412 | } | |
2413 | else | |
2414 | { | |
77ae0fe3 KH |
2415 | if (size_int < window_min_width) |
2416 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
2417 | |
2418 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 2419 | error ("Window width %d too small (after splitting)", |
a59fed7e | 2420 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
2421 | if (NILP (o->parent) |
2422 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2423 | { |
2424 | make_dummy_parent (window); | |
2425 | new = o->parent; | |
2426 | XWINDOW (new)->hchild = window; | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | /* Now we know that window's parent is a vertical combination | |
2431 | if we are dividing vertically, or a horizontal combination | |
2432 | if we are making side-by-side windows */ | |
2433 | ||
2434 | windows_or_buffers_changed++; | |
c0807608 | 2435 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
2436 | new = make_window (); |
2437 | p = XWINDOW (new); | |
2438 | ||
44fa5b1e | 2439 | p->frame = o->frame; |
7ab12479 | 2440 | p->next = o->next; |
265a9e55 | 2441 | if (!NILP (p->next)) |
7ab12479 JB |
2442 | XWINDOW (p->next)->prev = new; |
2443 | p->prev = window; | |
2444 | o->next = new; | |
2445 | p->parent = o->parent; | |
2446 | p->buffer = Qt; | |
2447 | ||
44fa5b1e | 2448 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2449 | |
265a9e55 | 2450 | if (!NILP (horflag)) |
7ab12479 JB |
2451 | { |
2452 | p->height = o->height; | |
2453 | p->top = o->top; | |
a59fed7e | 2454 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
2455 | XSETFASTINT (o->width, size_int); |
2456 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
2457 | } |
2458 | else | |
2459 | { | |
2460 | p->left = o->left; | |
2461 | p->width = o->width; | |
77ae0fe3 KH |
2462 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
2463 | XSETFASTINT (o->height, size_int); | |
2464 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
2465 | } |
2466 | ||
543f5fb1 RS |
2467 | Fset_window_buffer (new, o->buffer); |
2468 | ||
7ab12479 JB |
2469 | return new; |
2470 | } | |
2471 | \f | |
2472 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2473 | "Make current window ARG lines bigger.\n\ | |
2474 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
2475 | (arg, side) |
2476 | register Lisp_Object arg, side; | |
7ab12479 | 2477 | { |
413430c5 EN |
2478 | CHECK_NUMBER (arg, 0); |
2479 | change_window_height (XINT (arg), !NILP (side)); | |
543f5fb1 RS |
2480 | |
2481 | if (! NILP (Vwindow_configuration_change_hook)) | |
2482 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2483 | ||
7ab12479 JB |
2484 | return Qnil; |
2485 | } | |
2486 | ||
2487 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2488 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
2489 | From program, optional second arg non-nil means shrink sideways arg columns.") |
2490 | (arg, side) | |
2491 | register Lisp_Object arg, side; | |
7ab12479 | 2492 | { |
413430c5 EN |
2493 | CHECK_NUMBER (arg, 0); |
2494 | change_window_height (-XINT (arg), !NILP (side)); | |
543f5fb1 RS |
2495 | |
2496 | if (! NILP (Vwindow_configuration_change_hook)) | |
2497 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
2498 | ||
7ab12479 JB |
2499 | return Qnil; |
2500 | } | |
2501 | ||
2502 | int | |
2503 | window_height (window) | |
2504 | Lisp_Object window; | |
2505 | { | |
2506 | register struct window *p = XWINDOW (window); | |
2507 | return XFASTINT (p->height); | |
2508 | } | |
2509 | ||
2510 | int | |
2511 | window_width (window) | |
2512 | Lisp_Object window; | |
2513 | { | |
2514 | register struct window *p = XWINDOW (window); | |
2515 | return XFASTINT (p->width); | |
2516 | } | |
2517 | ||
05c2896a JB |
2518 | #define MINSIZE(w) \ |
2519 | (widthflag \ | |
2520 | ? window_min_width \ | |
2521 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2522 | |
2523 | #define CURBEG(w) \ | |
05c2896a | 2524 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2525 | |
2526 | #define CURSIZE(w) \ | |
05c2896a | 2527 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2528 | |
2529 | /* Unlike set_window_height, this function | |
2530 | also changes the heights of the siblings so as to | |
2531 | keep everything consistent. */ | |
2532 | ||
2533 | change_window_height (delta, widthflag) | |
2534 | register int delta; | |
2535 | int widthflag; | |
2536 | { | |
2537 | register Lisp_Object parent; | |
2538 | Lisp_Object window; | |
2539 | register struct window *p; | |
2540 | int *sizep; | |
2541 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2542 | register int (*setsizefun) () = (widthflag | |
2543 | ? set_window_width | |
2544 | : set_window_height); | |
db98a733 RS |
2545 | int maximum; |
2546 | Lisp_Object next, prev; | |
7ab12479 | 2547 | |
a481b3ea | 2548 | check_min_window_sizes (); |
7ab12479 JB |
2549 | |
2550 | window = selected_window; | |
2551 | while (1) | |
2552 | { | |
2553 | p = XWINDOW (window); | |
2554 | parent = p->parent; | |
265a9e55 | 2555 | if (NILP (parent)) |
7ab12479 JB |
2556 | { |
2557 | if (widthflag) | |
2558 | error ("No other window to side of this one"); | |
2559 | break; | |
2560 | } | |
265a9e55 JB |
2561 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2562 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2563 | break; |
2564 | window = parent; | |
2565 | } | |
2566 | ||
05c2896a | 2567 | sizep = &CURSIZE (window); |
7ab12479 | 2568 | |
7ab12479 JB |
2569 | { |
2570 | register int maxdelta; | |
7ab12479 | 2571 | |
265a9e55 JB |
2572 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2573 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2574 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2575 | /* This is a frame with only one window, a minibuffer-only |
2576 | or a minibufferless frame. */ | |
d5783c40 | 2577 | : (delta = 0)); |
7ab12479 JB |
2578 | |
2579 | if (delta > maxdelta) | |
2580 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2581 | the full frame, or make the only window aside from the |
2582 | minibuffer the full frame. */ | |
7ab12479 | 2583 | delta = maxdelta; |
6b54027b | 2584 | } |
d5783c40 | 2585 | |
6b54027b RS |
2586 | if (*sizep + delta < MINSIZE (window)) |
2587 | { | |
543f5fb1 | 2588 | delete_window (window); |
d5783c40 | 2589 | return; |
6b54027b RS |
2590 | } |
2591 | ||
2592 | if (delta == 0) | |
2593 | return; | |
7ab12479 | 2594 | |
db98a733 RS |
2595 | /* Find the total we can get from other siblings. */ |
2596 | maximum = 0; | |
2597 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
2598 | maximum += (*sizefun) (next) - MINSIZE (next); | |
2599 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) | |
2600 | maximum += (*sizefun) (prev) - MINSIZE (prev); | |
2601 | ||
2602 | /* If we can get it all from them, do so. */ | |
2603 | if (delta < maximum) | |
7ab12479 | 2604 | { |
db98a733 RS |
2605 | Lisp_Object first_unaffected; |
2606 | Lisp_Object first_affected; | |
2607 | ||
2608 | next = p->next; | |
2609 | prev = p->prev; | |
2610 | first_affected = window; | |
2611 | /* Look at one sibling at a time, | |
2612 | moving away from this window in both directions alternately, | |
2613 | and take as much as we can get without deleting that sibling. */ | |
dc91fb5d | 2614 | while (delta != 0) |
db98a733 RS |
2615 | { |
2616 | if (delta == 0) | |
2617 | break; | |
2618 | if (! NILP (next)) | |
2619 | { | |
2620 | int this_one = (*sizefun) (next) - MINSIZE (next); | |
2621 | if (this_one > delta) | |
2622 | this_one = delta; | |
2623 | ||
2624 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); | |
2625 | (*setsizefun) (window, *sizep + this_one, 0); | |
2626 | ||
2627 | delta -= this_one; | |
2628 | next = XWINDOW (next)->next; | |
2629 | } | |
2630 | if (delta == 0) | |
2631 | break; | |
2632 | if (! NILP (prev)) | |
2633 | { | |
2634 | int this_one = (*sizefun) (prev) - MINSIZE (prev); | |
2635 | if (this_one > delta) | |
2636 | this_one = delta; | |
2637 | ||
2638 | first_affected = prev; | |
2639 | ||
2640 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); | |
2641 | (*setsizefun) (window, *sizep + this_one, 0); | |
2642 | ||
2643 | delta -= this_one; | |
2644 | prev = XWINDOW (prev)->prev; | |
2645 | } | |
2646 | } | |
2647 | ||
2648 | /* Now recalculate the edge positions of all the windows affected, | |
2649 | based on the new sizes. */ | |
2650 | first_unaffected = next; | |
2651 | prev = first_affected; | |
2652 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
2653 | prev = next, next = XWINDOW (next)->next) | |
2654 | { | |
2655 | CURBEG (next) = CURBEG (prev) + (*sizefun) (prev); | |
2656 | /* This does not change size of NEXT, | |
2657 | but it propagates the new top edge to its children */ | |
2658 | (*setsizefun) (next, (*sizefun) (next), 0); | |
2659 | } | |
7ab12479 JB |
2660 | } |
2661 | else | |
2662 | { | |
2663 | register int delta1; | |
2664 | register int opht = (*sizefun) (parent); | |
2665 | ||
2666 | /* If trying to grow this window to or beyond size of the parent, | |
2667 | make delta1 so big that, on shrinking back down, | |
2668 | all the siblings end up with less than one line and are deleted. */ | |
2669 | if (opht <= *sizep + delta) | |
2670 | delta1 = opht * opht * 2; | |
2671 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2672 | lines to this window and to the parent, and then shrink | |
2673 | the parent back to its original size, the new proportional | |
2674 | size of this window will increase by delta. */ | |
2675 | else | |
2676 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2677 | ||
2678 | /* Add delta1 lines or columns to this window, and to the parent, | |
2679 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2680 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2681 | (*setsizefun) (window, *sizep + delta1, 0); |
2682 | ||
2683 | /* Squeeze out delta1 lines or columns from our parent, | |
2684 | shriking this window and siblings proportionately. | |
2685 | This brings parent back to correct size. | |
2686 | Delta1 was calculated so this makes this window the desired size, | |
2687 | taking it all out of the siblings. */ | |
2688 | (*setsizefun) (parent, opht, 0); | |
2689 | } | |
2690 | ||
d834a2e9 | 2691 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 2692 | XSETFASTINT (p->last_overlay_modified, 0); |
7ab12479 JB |
2693 | } |
2694 | #undef MINSIZE | |
2695 | #undef CURBEG | |
2696 | #undef CURSIZE | |
2697 | ||
2698 | \f | |
2699 | /* Return number of lines of text (not counting mode line) in W. */ | |
2700 | ||
2701 | int | |
2702 | window_internal_height (w) | |
2703 | struct window *w; | |
2704 | { | |
2705 | int ht = XFASTINT (w->height); | |
2706 | ||
2707 | if (MINI_WINDOW_P (w)) | |
2708 | return ht; | |
2709 | ||
265a9e55 JB |
2710 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2711 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2712 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2713 | return ht - 1; |
2714 | ||
2715 | return ht; | |
2716 | } | |
2717 | ||
535e0b8e JB |
2718 | |
2719 | /* Return the number of columns in W. | |
a3c87d4e | 2720 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2721 | separating W from the sibling to its right. */ |
2722 | int | |
2723 | window_internal_width (w) | |
2724 | struct window *w; | |
2725 | { | |
2726 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
535e0b8e JB |
2727 | int width = XINT (w->width); |
2728 | ||
a3c87d4e JB |
2729 | /* Scroll bars occupy a few columns. */ |
2730 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2731 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2732 | |
2733 | /* The column of `|' characters separating side-by-side windows | |
2734 | occupies one column only. */ | |
111e5992 RS |
2735 | if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) |
2736 | return width - 1; | |
2737 | ||
2738 | return width; | |
535e0b8e JB |
2739 | } |
2740 | ||
2741 | ||
101d1605 | 2742 | /* Scroll contents of window WINDOW up N lines. |
9317a85d | 2743 | If WHOLE is nonzero, it means scroll N screenfuls instead. */ |
7ab12479 | 2744 | |
101d1605 RS |
2745 | static void |
2746 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
2747 | Lisp_Object window; |
2748 | int n; | |
101d1605 | 2749 | int whole; |
f8026fd8 | 2750 | int noerror; |
7ab12479 JB |
2751 | { |
2752 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2753 | register int opoint = PT; |
7ab12479 JB |
2754 | register int pos; |
2755 | register int ht = window_internal_height (w); | |
2756 | register Lisp_Object tem; | |
2757 | int lose; | |
2758 | Lisp_Object bolp, nmoved; | |
345d45b2 | 2759 | int startpos; |
101d1605 RS |
2760 | struct position posit; |
2761 | int original_vpos; | |
2762 | ||
2763 | startpos = marker_position (w->start); | |
2764 | ||
2765 | posit = *compute_motion (startpos, 0, 0, 0, | |
2766 | PT, ht, 0, | |
2767 | window_internal_width (w), XINT (w->hscroll), | |
2768 | 0, w); | |
2769 | original_vpos = posit.vpos; | |
0a1f771a | 2770 | |
d834a2e9 | 2771 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2772 | tem = Fpos_visible_in_window_p (tem, window); |
2773 | ||
265a9e55 | 2774 | if (NILP (tem)) |
7ab12479 | 2775 | { |
cd2be1dd | 2776 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 2777 | startpos = PT; |
7ab12479 JB |
2778 | } |
2779 | ||
345d45b2 | 2780 | SET_PT (startpos); |
5ce7b543 | 2781 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2782 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2783 | pos = PT; |
7ab12479 JB |
2784 | bolp = Fbolp (); |
2785 | SET_PT (opoint); | |
2786 | ||
2787 | if (lose) | |
f8026fd8 JB |
2788 | { |
2789 | if (noerror) | |
2790 | return; | |
2791 | else | |
2792 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2793 | } | |
7ab12479 JB |
2794 | |
2795 | if (pos < ZV) | |
7ab12479 | 2796 | { |
0c7da84e RS |
2797 | int this_scroll_margin = scroll_margin; |
2798 | ||
2799 | /* Don't use a scroll margin that is negative or too large. */ | |
2800 | if (this_scroll_margin < 0) | |
2801 | this_scroll_margin = 0; | |
2802 | ||
2803 | if (XINT (w->height) < 4 * scroll_margin) | |
2804 | this_scroll_margin = XINT (w->height) / 4; | |
2805 | ||
7ab12479 JB |
2806 | set_marker_restricted (w->start, make_number (pos), w->buffer); |
2807 | w->start_at_line_beg = bolp; | |
2808 | w->update_mode_line = Qt; | |
d834a2e9 | 2809 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2810 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
2811 | /* Set force_start so that redisplay_window will run |
2812 | the window-scroll-functions. */ | |
2813 | w->force_start = Qt; | |
0c7da84e | 2814 | |
9317a85d | 2815 | if (whole && scroll_preserve_screen_position) |
0c7da84e RS |
2816 | { |
2817 | SET_PT (pos); | |
101d1605 | 2818 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 2819 | } |
101d1605 RS |
2820 | /* If we scrolled forward, put point enough lines down |
2821 | that it is outside the scroll margin. */ | |
2822 | else if (n > 0) | |
0c7da84e | 2823 | { |
101d1605 RS |
2824 | int top_margin; |
2825 | ||
2826 | if (this_scroll_margin > 0) | |
2827 | { | |
2828 | SET_PT (pos); | |
2829 | Fvertical_motion (make_number (this_scroll_margin), window); | |
2830 | top_margin = PT; | |
2831 | } | |
2832 | else | |
2833 | top_margin = pos; | |
2834 | ||
2835 | if (top_margin <= opoint) | |
2836 | SET_PT (opoint); | |
9317a85d | 2837 | else if (scroll_preserve_screen_position) |
101d1605 RS |
2838 | { |
2839 | SET_PT (pos); | |
2840 | Fvertical_motion (make_number (original_vpos), window); | |
2841 | } | |
9317a85d RS |
2842 | else |
2843 | SET_PT (pos); | |
0c7da84e | 2844 | } |
101d1605 | 2845 | else if (n < 0) |
7ab12479 | 2846 | { |
101d1605 RS |
2847 | int bottom_margin; |
2848 | ||
0c7da84e RS |
2849 | /* If we scrolled backward, put point near the end of the window |
2850 | but not within the scroll margin. */ | |
7ab12479 | 2851 | SET_PT (pos); |
0c7da84e | 2852 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
2853 | if (XFASTINT (tem) == ht - this_scroll_margin) |
2854 | bottom_margin = PT; | |
2855 | else | |
2856 | bottom_margin = PT + 1; | |
2857 | ||
2858 | if (bottom_margin > opoint) | |
7ab12479 JB |
2859 | SET_PT (opoint); |
2860 | else | |
101d1605 | 2861 | { |
9317a85d RS |
2862 | if (scroll_preserve_screen_position) |
2863 | { | |
2864 | SET_PT (pos); | |
2865 | Fvertical_motion (make_number (original_vpos), window); | |
2866 | } | |
2867 | else | |
2868 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 2869 | } |
7ab12479 JB |
2870 | } |
2871 | } | |
2872 | else | |
f8026fd8 JB |
2873 | { |
2874 | if (noerror) | |
2875 | return; | |
2876 | else | |
2877 | Fsignal (Qend_of_buffer, Qnil); | |
2878 | } | |
7ab12479 JB |
2879 | } |
2880 | \f | |
2881 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2882 | ||
2883 | static void | |
2884 | scroll_command (n, direction) | |
2885 | register Lisp_Object n; | |
2886 | int direction; | |
2887 | { | |
2888 | register int defalt; | |
2889 | int count = specpdl_ptr - specpdl; | |
2890 | ||
95605e15 JB |
2891 | /* If selected window's buffer isn't current, make it current for the moment. |
2892 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2893 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2894 | { |
2895 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2896 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2897 | } | |
7ab12479 JB |
2898 | |
2899 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2900 | - next_screen_context_lines); | |
2901 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2902 | ||
265a9e55 | 2903 | if (NILP (n)) |
101d1605 | 2904 | window_scroll (selected_window, defalt, 1, 0); |
7ab12479 | 2905 | else if (EQ (n, Qminus)) |
101d1605 | 2906 | window_scroll (selected_window, - defalt, 1, 0); |
7ab12479 JB |
2907 | else |
2908 | { | |
2909 | n = Fprefix_numeric_value (n); | |
101d1605 | 2910 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 2911 | } |
95605e15 JB |
2912 | |
2913 | unbind_to (count, Qnil); | |
7ab12479 JB |
2914 | } |
2915 | ||
2916 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2917 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2918 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2919 | Negative ARG means scroll downward.\n\ |
7ab12479 | 2920 | When calling from a program, supply a number as argument or nil.") |
413430c5 EN |
2921 | (arg) |
2922 | Lisp_Object arg; | |
7ab12479 | 2923 | { |
413430c5 | 2924 | scroll_command (arg, 1); |
7ab12479 JB |
2925 | return Qnil; |
2926 | } | |
2927 | ||
2928 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2929 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2930 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2931 | Negative ARG means scroll upward.\n\ |
7ab12479 | 2932 | When calling from a program, supply a number as argument or nil.") |
413430c5 EN |
2933 | (arg) |
2934 | Lisp_Object arg; | |
7ab12479 | 2935 | { |
413430c5 | 2936 | scroll_command (arg, -1); |
7ab12479 JB |
2937 | return Qnil; |
2938 | } | |
ccd0664b RS |
2939 | \f |
2940 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
2941 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 2942 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
2943 | specifies the window.\n\ |
2944 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
2945 | showing that buffer is used.") | |
eb16ec06 | 2946 | () |
7ab12479 | 2947 | { |
ccd0664b | 2948 | Lisp_Object window; |
7ab12479 JB |
2949 | |
2950 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2951 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2952 | window = Vminibuf_scroll_window; |
2953 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2954 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2955 | { |
2956 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2957 | if (NILP (window)) |
7ab12479 JB |
2958 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2959 | } | |
2960 | else | |
dbc4e1c1 JB |
2961 | { |
2962 | /* Nothing specified; look for a neighboring window on the same | |
2963 | frame. */ | |
2964 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2965 | ||
2966 | if (EQ (window, selected_window)) | |
2967 | /* That didn't get us anywhere; look for a window on another | |
2968 | visible frame. */ | |
2969 | do | |
2970 | window = Fnext_window (window, Qnil, Qt); | |
2971 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2972 | && ! EQ (window, selected_window)); | |
2973 | } | |
2974 | ||
605be8af | 2975 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2976 | |
2977 | if (EQ (window, selected_window)) | |
2978 | error ("There is no other window"); | |
2979 | ||
ccd0664b RS |
2980 | return window; |
2981 | } | |
2982 | ||
2983 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2984 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
2985 | The next window is the one below the current one; or the one at the top\n\ | |
2986 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
2987 | When calling from a program, supply a number as argument or nil.\n\ | |
2988 | \n\ | |
2989 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
2990 | specifies the window to scroll.\n\ | |
2991 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2992 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
2993 | (arg) |
2994 | register Lisp_Object arg; | |
ccd0664b RS |
2995 | { |
2996 | register Lisp_Object window; | |
2f787aa3 | 2997 | register int defalt; |
ccd0664b RS |
2998 | register struct window *w; |
2999 | register int count = specpdl_ptr - specpdl; | |
3000 | ||
3001 | window = Fother_window_for_scrolling (); | |
3002 | ||
7ab12479 | 3003 | w = XWINDOW (window); |
2f787aa3 KH |
3004 | defalt = window_internal_height (w) - next_screen_context_lines; |
3005 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
3006 | |
3007 | /* Don't screw up if window_scroll gets an error. */ | |
3008 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
3009 | ||
3010 | Fset_buffer (w->buffer); | |
3011 | SET_PT (marker_position (w->pointm)); | |
3012 | ||
413430c5 | 3013 | if (NILP (arg)) |
101d1605 | 3014 | window_scroll (window, defalt, 1, 1); |
413430c5 | 3015 | else if (EQ (arg, Qminus)) |
101d1605 | 3016 | window_scroll (window, -defalt, 1, 1); |
7ab12479 JB |
3017 | else |
3018 | { | |
413430c5 EN |
3019 | if (CONSP (arg)) |
3020 | arg = Fcar (arg); | |
3021 | CHECK_NUMBER (arg, 0); | |
101d1605 | 3022 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
3023 | } |
3024 | ||
5ce7b543 | 3025 | Fset_marker (w->pointm, make_number (PT), Qnil); |
f4e7b2c2 | 3026 | unbind_to (count, Qnil); |
7ab12479 JB |
3027 | |
3028 | return Qnil; | |
3029 | } | |
3030 | \f | |
644b477c | 3031 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
3032 | "Scroll selected window display ARG columns left.\n\ |
3033 | Default for ARG is window width minus 2.") | |
3034 | (arg) | |
3035 | register Lisp_Object arg; | |
3036 | { | |
3037 | ||
265a9e55 | 3038 | if (NILP (arg)) |
d834a2e9 | 3039 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
3040 | else |
3041 | arg = Fprefix_numeric_value (arg); | |
3042 | ||
3043 | return | |
3044 | Fset_window_hscroll (selected_window, | |
3045 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
3046 | + XINT (arg))); | |
3047 | } | |
3048 | ||
644b477c | 3049 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
3050 | "Scroll selected window display ARG columns right.\n\ |
3051 | Default for ARG is window width minus 2.") | |
3052 | (arg) | |
3053 | register Lisp_Object arg; | |
3054 | { | |
265a9e55 | 3055 | if (NILP (arg)) |
d834a2e9 | 3056 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
3057 | else |
3058 | arg = Fprefix_numeric_value (arg); | |
3059 | ||
3060 | return | |
3061 | Fset_window_hscroll (selected_window, | |
3062 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
3063 | - XINT (arg))); | |
3064 | } | |
3065 | ||
3066 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 3067 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 3068 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 3069 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 3070 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 3071 | redraws with point in the center of the current window.") |
413430c5 EN |
3072 | (arg) |
3073 | register Lisp_Object arg; | |
7ab12479 JB |
3074 | { |
3075 | register struct window *w = XWINDOW (selected_window); | |
3076 | register int ht = window_internal_height (w); | |
113d9015 | 3077 | struct position pos; |
7ab12479 | 3078 | |
413430c5 | 3079 | if (NILP (arg)) |
7ab12479 | 3080 | { |
44fa5b1e | 3081 | extern int frame_garbaged; |
7ab12479 | 3082 | |
44fa5b1e | 3083 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 3084 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 3085 | } |
413430c5 | 3086 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 3087 | { |
413430c5 | 3088 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
3089 | } |
3090 | else | |
3091 | { | |
413430c5 EN |
3092 | arg = Fprefix_numeric_value (arg); |
3093 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
3094 | } |
3095 | ||
413430c5 EN |
3096 | if (XINT (arg) < 0) |
3097 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 3098 | |
6ec8bbd2 | 3099 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 3100 | |
113d9015 KH |
3101 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
3102 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
5a255667 | 3103 | || FETCH_BYTE (pos.bufpos - 1) == '\n') |
113d9015 | 3104 | ? Qt : Qnil); |
7ab12479 JB |
3105 | w->force_start = Qt; |
3106 | ||
3107 | return Qnil; | |
3108 | } | |
3109 | \f | |
3110 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
3111 | 1, 1, "P", | |
3112 | "Position point relative to window.\n\ | |
19e3bf0a | 3113 | With no argument, position point at center of window.\n\ |
44fa5b1e | 3114 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
3115 | negative means relative to bottom of window.") |
3116 | (arg) | |
3117 | register Lisp_Object arg; | |
3118 | { | |
3119 | register struct window *w = XWINDOW (selected_window); | |
3120 | register int height = window_internal_height (w); | |
3121 | register int start; | |
540b6aa0 | 3122 | Lisp_Object window; |
7ab12479 | 3123 | |
265a9e55 | 3124 | if (NILP (arg)) |
d834a2e9 | 3125 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
3126 | else |
3127 | { | |
3128 | arg = Fprefix_numeric_value (arg); | |
3129 | if (XINT (arg) < 0) | |
3130 | XSETINT (arg, XINT (arg) + height); | |
3131 | } | |
3132 | ||
3133 | start = marker_position (w->start); | |
74112613 | 3134 | XSETWINDOW (window, w); |
7ab12479 JB |
3135 | if (start < BEGV || start > ZV) |
3136 | { | |
cd2be1dd | 3137 | Fvertical_motion (make_number (- (height / 2)), window); |
5ce7b543 | 3138 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
3139 | w->start_at_line_beg = Fbolp (); |
3140 | w->force_start = Qt; | |
3141 | } | |
3142 | else | |
3143 | SET_PT (start); | |
3144 | ||
540b6aa0 | 3145 | return Fvertical_motion (arg, window); |
7ab12479 JB |
3146 | } |
3147 | \f | |
3148 | struct save_window_data | |
3149 | { | |
f5ccc0cc | 3150 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 3151 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 3152 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 3153 | Lisp_Object selected_frame; |
7ab12479 JB |
3154 | Lisp_Object current_window; |
3155 | Lisp_Object current_buffer; | |
3156 | Lisp_Object minibuf_scroll_window; | |
3157 | Lisp_Object root_window; | |
bdc727bf | 3158 | Lisp_Object focus_frame; |
756b6edc RS |
3159 | /* Record the values of window-min-width and window-min-height |
3160 | so that window sizes remain consistent with them. */ | |
3161 | Lisp_Object min_width, min_height; | |
7ab12479 JB |
3162 | /* A vector, interpreted as a struct saved_window */ |
3163 | Lisp_Object saved_windows; | |
3164 | }; | |
ff06df24 | 3165 | |
7ab12479 JB |
3166 | /* This is saved as a Lisp_Vector */ |
3167 | struct saved_window | |
3168 | { | |
3169 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 3170 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
3171 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
3172 | ||
3173 | Lisp_Object window; | |
3174 | Lisp_Object buffer, start, pointm, mark; | |
3175 | Lisp_Object left, top, width, height, hscroll; | |
3176 | Lisp_Object parent, prev; | |
3177 | Lisp_Object start_at_line_beg; | |
3178 | Lisp_Object display_table; | |
3179 | }; | |
3180 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
3181 | ||
3182 | #define SAVED_WINDOW_N(swv,n) \ | |
3183 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
3184 | ||
3185 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
5c4d25a6 | 3186 | "T if OBJECT is a window-configuration object.") |
413430c5 EN |
3187 | (object) |
3188 | Lisp_Object object; | |
7ab12479 | 3189 | { |
413430c5 | 3190 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
3191 | return Qt; |
3192 | return Qnil; | |
3193 | } | |
3194 | ||
3195 | ||
d5b2799e RS |
3196 | DEFUN ("set-window-configuration", Fset_window_configuration, |
3197 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
3198 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
3199 | CONFIGURATION must be a value previously returned\n\ | |
3200 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
3201 | (configuration) |
3202 | Lisp_Object configuration; | |
7ab12479 | 3203 | { |
7ab12479 JB |
3204 | register struct save_window_data *data; |
3205 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 3206 | Lisp_Object new_current_buffer; |
fd482be5 | 3207 | Lisp_Object frame; |
44fa5b1e | 3208 | FRAME_PTR f; |
7ab12479 | 3209 | |
017b2bad | 3210 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 3211 | { |
2f83aebe JB |
3212 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
3213 | configuration); | |
7ab12479 JB |
3214 | } |
3215 | ||
2f83aebe | 3216 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
3217 | saved_windows = XVECTOR (data->saved_windows); |
3218 | ||
7ab12479 | 3219 | new_current_buffer = data->current_buffer; |
265a9e55 | 3220 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
3221 | new_current_buffer = Qnil; |
3222 | ||
fd482be5 JB |
3223 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3224 | f = XFRAME (frame); | |
9ace597f | 3225 | |
fd482be5 JB |
3226 | /* If f is a dead frame, don't bother rebuilding its window tree. |
3227 | However, there is other stuff we should still try to do below. */ | |
3228 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 3229 | { |
fd482be5 JB |
3230 | register struct window *w; |
3231 | register struct saved_window *p; | |
3232 | int k; | |
3233 | ||
3234 | /* If the frame has been resized since this window configuration was | |
3235 | made, we change the frame to the size specified in the | |
3236 | configuration, restore the configuration, and then resize it | |
3237 | back. We keep track of the prevailing height in these variables. */ | |
3238 | int previous_frame_height = FRAME_HEIGHT (f); | |
3239 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 3240 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
3241 | |
3242 | if (XFASTINT (data->frame_height) != previous_frame_height | |
3243 | || XFASTINT (data->frame_width) != previous_frame_width) | |
3244 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
e3678b64 | 3245 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3246 | if (XFASTINT (data->frame_menu_bar_lines) |
3247 | != previous_frame_menu_bar_lines) | |
3248 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
217f2871 | 3249 | #endif |
fd482be5 JB |
3250 | |
3251 | windows_or_buffers_changed++; | |
29aeee73 | 3252 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 3253 | |
756b6edc RS |
3254 | /* Temporarily avoid any problems with windows that are smaller |
3255 | than they are supposed to be. */ | |
3256 | window_min_height = 1; | |
3257 | window_min_width = 1; | |
3258 | ||
fd482be5 JB |
3259 | /* Kludge Alert! |
3260 | Mark all windows now on frame as "deleted". | |
3261 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 3262 | |
fd482be5 JB |
3263 | Save their current buffers in their height fields, since we may |
3264 | need it later, if a buffer saved in the configuration is now | |
3265 | dead. */ | |
3266 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
3267 | ||
3268 | for (k = 0; k < saved_windows->size; k++) | |
3269 | { | |
3270 | p = SAVED_WINDOW_N (saved_windows, k); | |
3271 | w = XWINDOW (p->window); | |
3272 | w->next = Qnil; | |
7ab12479 | 3273 | |
fd482be5 JB |
3274 | if (!NILP (p->parent)) |
3275 | w->parent = SAVED_WINDOW_N (saved_windows, | |
3276 | XFASTINT (p->parent))->window; | |
3277 | else | |
3278 | w->parent = Qnil; | |
7ab12479 | 3279 | |
fd482be5 | 3280 | if (!NILP (p->prev)) |
7ab12479 | 3281 | { |
fd482be5 JB |
3282 | w->prev = SAVED_WINDOW_N (saved_windows, |
3283 | XFASTINT (p->prev))->window; | |
3284 | XWINDOW (w->prev)->next = p->window; | |
3285 | } | |
3286 | else | |
3287 | { | |
3288 | w->prev = Qnil; | |
3289 | if (!NILP (w->parent)) | |
3290 | { | |
3291 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
3292 | { | |
3293 | XWINDOW (w->parent)->vchild = p->window; | |
3294 | XWINDOW (w->parent)->hchild = Qnil; | |
3295 | } | |
3296 | else | |
3297 | { | |
3298 | XWINDOW (w->parent)->hchild = p->window; | |
3299 | XWINDOW (w->parent)->vchild = Qnil; | |
3300 | } | |
3301 | } | |
3302 | } | |
3303 | ||
3304 | /* If we squirreled away the buffer in the window's height, | |
3305 | restore it now. */ | |
017b2bad | 3306 | if (BUFFERP (w->height)) |
fd482be5 JB |
3307 | w->buffer = w->height; |
3308 | w->left = p->left; | |
3309 | w->top = p->top; | |
3310 | w->width = p->width; | |
3311 | w->height = p->height; | |
3312 | w->hscroll = p->hscroll; | |
3313 | w->display_table = p->display_table; | |
d834a2e9 | 3314 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3315 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
3316 | |
3317 | /* Reinstall the saved buffer and pointers into it. */ | |
3318 | if (NILP (p->buffer)) | |
3319 | w->buffer = p->buffer; | |
3320 | else | |
3321 | { | |
3322 | if (!NILP (XBUFFER (p->buffer)->name)) | |
3323 | /* If saved buffer is alive, install it. */ | |
3324 | { | |
3325 | w->buffer = p->buffer; | |
3326 | w->start_at_line_beg = p->start_at_line_beg; | |
3327 | set_marker_restricted (w->start, | |
3328 | Fmarker_position (p->start), | |
3329 | w->buffer); | |
3330 | set_marker_restricted (w->pointm, | |
3331 | Fmarker_position (p->pointm), | |
3332 | w->buffer); | |
3333 | Fset_marker (XBUFFER (w->buffer)->mark, | |
3334 | Fmarker_position (p->mark), w->buffer); | |
3335 | ||
3336 | /* As documented in Fcurrent_window_configuration, don't | |
3337 | save the location of point in the buffer which was current | |
3338 | when the window configuration was recorded. */ | |
6b54027b RS |
3339 | if (!EQ (p->buffer, new_current_buffer) |
3340 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
3341 | Fgoto_char (w->pointm); |
3342 | } | |
52a68e98 RS |
3343 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
3344 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 3345 | { |
fd482be5 JB |
3346 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
3347 | /* This will set the markers to beginning of visible | |
3348 | range. */ | |
3349 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
3350 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
3351 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3352 | } |
3353 | else | |
fd482be5 | 3354 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 3355 | are real. */ |
7ab12479 | 3356 | { |
fd482be5 JB |
3357 | /* Set window markers at start of visible range. */ |
3358 | if (XMARKER (w->start)->buffer == 0) | |
3359 | set_marker_restricted (w->start, make_number (0), | |
3360 | w->buffer); | |
3361 | if (XMARKER (w->pointm)->buffer == 0) | |
3362 | set_marker_restricted (w->pointm, | |
3363 | (make_number | |
3364 | (BUF_PT (XBUFFER (w->buffer)))), | |
3365 | w->buffer); | |
3366 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3367 | } |
3368 | } | |
3369 | } | |
9ace597f | 3370 | |
fd482be5 JB |
3371 | FRAME_ROOT_WINDOW (f) = data->root_window; |
3372 | Fselect_window (data->current_window); | |
7ab12479 | 3373 | |
db269683 | 3374 | if (NILP (data->focus_frame) |
017b2bad | 3375 | || (FRAMEP (data->focus_frame) |
db269683 JB |
3376 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
3377 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 3378 | |
fd482be5 JB |
3379 | #if 0 /* I don't understand why this is needed, and it causes problems |
3380 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 3381 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
3382 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
3383 | Qnil, 0); | |
fd482be5 JB |
3384 | #endif |
3385 | ||
3386 | /* Set the screen height to the value it had before this function. */ | |
3387 | if (previous_frame_height != FRAME_HEIGHT (f) | |
3388 | || previous_frame_width != FRAME_WIDTH (f)) | |
3389 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
3390 | 0, 0); | |
e3678b64 | 3391 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3392 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
3393 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
217f2871 | 3394 | #endif |
fd482be5 | 3395 | } |
bdc727bf | 3396 | |
756b6edc RS |
3397 | /* Restore the minimum heights recorded in the configuration. */ |
3398 | window_min_height = XINT (data->min_height); | |
3399 | window_min_width = XINT (data->min_width); | |
3400 | ||
bdc727bf | 3401 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 3402 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
3403 | selected window too, but that doesn't make the call to |
3404 | Fselect_window above totally superfluous; it still sets f's | |
3405 | selected window. */ | |
fd482be5 | 3406 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
9a7c6fc3 | 3407 | do_switch_frame (data->selected_frame, Qnil, 0); |
bdc727bf JB |
3408 | |
3409 | if (!NILP (new_current_buffer)) | |
3410 | Fset_buffer (new_current_buffer); | |
3411 | ||
7ab12479 | 3412 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
543f5fb1 RS |
3413 | |
3414 | if (! NILP (Vwindow_configuration_change_hook) | |
3415 | && ! NILP (Vrun_hooks)) | |
3416 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3417 | ||
7ab12479 JB |
3418 | return (Qnil); |
3419 | } | |
3420 | ||
44fa5b1e | 3421 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3422 | by setting their buffers to nil. */ |
3423 | ||
fd482be5 | 3424 | void |
7ab12479 JB |
3425 | delete_all_subwindows (w) |
3426 | register struct window *w; | |
3427 | { | |
265a9e55 | 3428 | if (!NILP (w->next)) |
7ab12479 | 3429 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3430 | if (!NILP (w->vchild)) |
7ab12479 | 3431 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3432 | if (!NILP (w->hchild)) |
7ab12479 | 3433 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3434 | |
3435 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3436 | ||
86e48436 RS |
3437 | if (!NILP (w->buffer)) |
3438 | unshow_buffer (w); | |
3439 | ||
605be8af JB |
3440 | /* We set all three of these fields to nil, to make sure that we can |
3441 | distinguish this dead window from any live window. Live leaf | |
3442 | windows will have buffer set, and combination windows will have | |
3443 | vchild or hchild set. */ | |
3444 | w->buffer = Qnil; | |
3445 | w->vchild = Qnil; | |
3446 | w->hchild = Qnil; | |
7ab12479 JB |
3447 | } |
3448 | \f | |
3449 | static int | |
3450 | count_windows (window) | |
3451 | register struct window *window; | |
3452 | { | |
3453 | register int count = 1; | |
265a9e55 | 3454 | if (!NILP (window->next)) |
7ab12479 | 3455 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3456 | if (!NILP (window->vchild)) |
7ab12479 | 3457 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3458 | if (!NILP (window->hchild)) |
7ab12479 JB |
3459 | count += count_windows (XWINDOW (window->hchild)); |
3460 | return count; | |
3461 | } | |
3462 | ||
3463 | static int | |
3464 | save_window_save (window, vector, i) | |
3465 | Lisp_Object window; | |
3466 | struct Lisp_Vector *vector; | |
3467 | int i; | |
3468 | { | |
3469 | register struct saved_window *p; | |
3470 | register struct window *w; | |
3471 | register Lisp_Object tem; | |
3472 | ||
265a9e55 | 3473 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3474 | { |
3475 | p = SAVED_WINDOW_N (vector, i); | |
3476 | w = XWINDOW (window); | |
3477 | ||
d834a2e9 | 3478 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3479 | p->window = window; |
3480 | p->buffer = w->buffer; | |
3481 | p->left = w->left; | |
3482 | p->top = w->top; | |
3483 | p->width = w->width; | |
3484 | p->height = w->height; | |
3485 | p->hscroll = w->hscroll; | |
3486 | p->display_table = w->display_table; | |
265a9e55 | 3487 | if (!NILP (w->buffer)) |
7ab12479 JB |
3488 | { |
3489 | /* Save w's value of point in the window configuration. | |
3490 | If w is the selected window, then get the value of point | |
3491 | from the buffer; pointm is garbage in the selected window. */ | |
3492 | if (EQ (window, selected_window)) | |
3493 | { | |
3494 | p->pointm = Fmake_marker (); | |
3495 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
3496 | w->buffer); | |
3497 | } | |
3498 | else | |
eeb82665 | 3499 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 3500 | |
eeb82665 | 3501 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
3502 | p->start_at_line_beg = w->start_at_line_beg; |
3503 | ||
3504 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 3505 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
3506 | } |
3507 | else | |
3508 | { | |
3509 | p->pointm = Qnil; | |
3510 | p->start = Qnil; | |
3511 | p->mark = Qnil; | |
3512 | p->start_at_line_beg = Qnil; | |
3513 | } | |
3514 | ||
265a9e55 | 3515 | if (NILP (w->parent)) |
7ab12479 JB |
3516 | p->parent = Qnil; |
3517 | else | |
3518 | p->parent = XWINDOW (w->parent)->temslot; | |
3519 | ||
265a9e55 | 3520 | if (NILP (w->prev)) |
7ab12479 JB |
3521 | p->prev = Qnil; |
3522 | else | |
3523 | p->prev = XWINDOW (w->prev)->temslot; | |
3524 | ||
265a9e55 | 3525 | if (!NILP (w->vchild)) |
7ab12479 | 3526 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3527 | if (!NILP (w->hchild)) |
7ab12479 JB |
3528 | i = save_window_save (w->hchild, vector, i); |
3529 | } | |
3530 | ||
3531 | return i; | |
3532 | } | |
3533 | ||
a0d76c27 EN |
3534 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
3535 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
3536 | "Return an object representing the current window configuration of FRAME.\n\ |
3537 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3538 | This describes the number of windows, their sizes and current buffers,\n\ |
3539 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3540 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3541 | its value is -not- saved.\n\ |
3542 | This also records the currently selected frame, and FRAME's focus\n\ | |
3543 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3544 | (frame) |
3545 | Lisp_Object frame; | |
7ab12479 JB |
3546 | { |
3547 | register Lisp_Object tem; | |
3548 | register int n_windows; | |
3549 | register struct save_window_data *data; | |
da2792e0 | 3550 | register struct Lisp_Vector *vec; |
7ab12479 | 3551 | register int i; |
44fa5b1e | 3552 | FRAME_PTR f; |
43bad991 | 3553 | |
44fa5b1e JB |
3554 | if (NILP (frame)) |
3555 | f = selected_frame; | |
43bad991 JB |
3556 | else |
3557 | { | |
44fa5b1e JB |
3558 | CHECK_LIVE_FRAME (frame, 0); |
3559 | f = XFRAME (frame); | |
43bad991 | 3560 | } |
7ab12479 | 3561 | |
44fa5b1e | 3562 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3563 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3564 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3565 | vec->contents[i] = Qnil; | |
3566 | vec->size = VECSIZE (struct save_window_data); | |
3567 | data = (struct save_window_data *)vec; | |
3568 | ||
d834a2e9 KH |
3569 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3570 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3571 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
74112613 | 3572 | XSETFRAME (data->selected_frame, selected_frame); |
44fa5b1e | 3573 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3574 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3575 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3576 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3577 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3578 | XSETINT (data->min_height, window_min_height); |
3579 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3580 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3581 | data->saved_windows = tem; | |
3582 | for (i = 0; i < n_windows; i++) | |
3583 | XVECTOR (tem)->contents[i] | |
3584 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3585 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3586 | XVECTOR (tem), 0); |
74112613 | 3587 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3588 | return (tem); |
3589 | } | |
3590 | ||
3591 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3592 | 0, UNEVALLED, 0, | |
3593 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3594 | Restore which buffer appears in which window, where display starts,\n\ |
3595 | and the value of point and mark for each window.\n\ | |
3596 | Also restore which buffer is current.\n\ | |
3597 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3598 | Does not restore the value of point in current buffer.") |
3599 | (args) | |
3600 | Lisp_Object args; | |
3601 | { | |
3602 | register Lisp_Object val; | |
3603 | register int count = specpdl_ptr - specpdl; | |
3604 | ||
3605 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3606 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3607 | val = Fprogn (args); |
3608 | return unbind_to (count, val); | |
3609 | } | |
3610 | \f | |
3611 | init_window_once () | |
3612 | { | |
44fa5b1e | 3613 | selected_frame = make_terminal_frame (); |
bc6c324f | 3614 | XSETFRAME (Vterminal_frame, selected_frame); |
44fa5b1e JB |
3615 | minibuf_window = selected_frame->minibuffer_window; |
3616 | selected_window = selected_frame->selected_window; | |
3617 | last_nonminibuf_frame = selected_frame; | |
5b03d3c0 RS |
3618 | |
3619 | window_initialized = 1; | |
7ab12479 JB |
3620 | } |
3621 | ||
3622 | syms_of_window () | |
3623 | { | |
543f5fb1 RS |
3624 | staticpro (&Qwindow_configuration_change_hook); |
3625 | Qwindow_configuration_change_hook | |
3626 | = intern ("window-configuration-change-hook"); | |
3627 | ||
7ab12479 JB |
3628 | Qwindowp = intern ("windowp"); |
3629 | staticpro (&Qwindowp); | |
3630 | ||
806b4d9b JB |
3631 | Qwindow_live_p = intern ("window-live-p"); |
3632 | staticpro (&Qwindow_live_p); | |
605be8af | 3633 | |
2cccc823 | 3634 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
3635 | staticpro (&Qtemp_buffer_show_hook); |
3636 | ||
7ab12479 JB |
3637 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
3638 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3639 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
3640 | Used by `with-output-to-temp-buffer'.\n\ |
3641 | If this function is used, then it must do the entire job of showing\n\ | |
3642 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
3643 | Vtemp_buffer_show_function = Qnil; |
3644 | ||
3645 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3646 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3647 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3648 | that the currently selected window is not acceptable.\n\ | |
3649 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3650 | work using this function."); | |
3651 | Vdisplay_buffer_function = Qnil; | |
3652 | ||
7ab12479 JB |
3653 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3654 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3655 | Vminibuf_scroll_window = Qnil; | |
3656 | ||
3657 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3658 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3659 | Vother_window_scroll_buffer = Qnil; | |
3660 | ||
44fa5b1e | 3661 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3662 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3663 | pop_up_frames = 0; |
7ab12479 | 3664 | |
44fa5b1e | 3665 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3666 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3667 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3668 | \n\ |
44fa5b1e JB |
3669 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3670 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3671 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3672 | |
a90712c2 RS |
3673 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3674 | "*List of buffer names that should have their own special frames.\n\ | |
3675 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 3676 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 3677 | \n\ |
524580a4 RS |
3678 | An element of the list can be a list instead of just a string.\n\ |
3679 | There are two ways to use a list as an element:\n\ | |
3680 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
3681 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3682 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
3683 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
3684 | All this is done by the function found in `special-display-function'."); | |
a90712c2 RS |
3685 | Vspecial_display_buffer_names = Qnil; |
3686 | ||
3687 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3688 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3689 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3690 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3691 | using `special-display-function'.\n\ |
3548e138 | 3692 | \n\ |
524580a4 RS |
3693 | An element of the list can be a list instead of just a string.\n\ |
3694 | There are two ways to use a list as an element:\n\ | |
3695 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
3696 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3697 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
3698 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
3699 | All this is done by the function found in `special-display-function'."); | |
a90712c2 RS |
3700 | Vspecial_display_regexps = Qnil; |
3701 | ||
3702 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3703 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3704 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3705 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3706 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3707 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3708 | \n\ |
3709 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3710 | or matches a regexp in `special-display-regexps'."); | |
3711 | Vspecial_display_function = Qnil; | |
3712 | ||
855d8627 RS |
3713 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
3714 | "*List of buffer names that should appear in the selected window.\n\ | |
3715 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
3716 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 3717 | in some other window.\n\ |
855d8627 RS |
3718 | \n\ |
3719 | An element of the list can be a cons cell instead of just a string.\n\ | |
3720 | Then the car must be a string, which specifies the buffer name.\n\ | |
3721 | This is for compatibility with `special-display-buffer-names';\n\ | |
3722 | the cdr of the cons cell is ignored.\n\ | |
3723 | \n\ | |
3724 | See also `same-window-regexps'."); | |
3725 | Vsame_window_buffer_names = Qnil; | |
3726 | ||
3727 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
3728 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
3729 | If a buffer name matches one of these regexps, then displaying it\n\ | |
3730 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
3731 | in the selected window, rather than making it appear in some other window.\n\ | |
3732 | \n\ | |
3733 | An element of the list can be a cons cell instead of just a string.\n\ | |
3734 | Then the car must be a string, which specifies the buffer name.\n\ | |
3735 | This is for compatibility with `special-display-buffer-names';\n\ | |
3736 | the cdr of the cons cell is ignored.\n\ | |
3737 | \n\ | |
3738 | See also `same-window-buffer-names'."); | |
3739 | Vsame_window_regexps = Qnil; | |
3740 | ||
7ab12479 JB |
3741 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3742 | "*Non-nil means display-buffer should make new windows."); | |
3743 | pop_up_windows = 1; | |
3744 | ||
3745 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3746 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3747 | next_screen_context_lines = 2; | |
3748 | ||
3749 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3750 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3751 | If there is only one window, it is split regardless of this value."); | |
3752 | split_height_threshold = 500; | |
3753 | ||
3754 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3755 | "*Delete any window less than this tall (including its mode line)."); | |
3756 | window_min_height = 4; | |
3757 | ||
3758 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3759 | "*Delete any window less than this wide."); | |
3760 | window_min_width = 10; | |
3761 | ||
9317a85d RS |
3762 | DEFVAR_BOOL ("scroll-preserve-screen-position", |
3763 | &scroll_preserve_screen_position, | |
3764 | "*Nonzero means scroll commands move point to keep its screen line unchanged."); | |
3765 | scroll_preserve_screen_position = 0; | |
3766 | ||
543f5fb1 RS |
3767 | DEFVAR_LISP ("window-configuration-change-hook", |
3768 | &Vwindow_configuration_change_hook, | |
3769 | "Functions to call when window configuration changes.\n\ | |
3770 | The selected frae is the one whose configuration has changed."); | |
3771 | Vwindow_configuration_change_hook = Qnil; | |
3772 | ||
7d601aaa RS |
3773 | DEFVAR_BOOL ("frame-override-unsplittable", &frame_override_unsplittable, |
3774 | "Non-nil means allow splitting an `unsplittable' frame.\n\ | |
3775 | \(That means, a frame whise `unsplittable' parameter is non-nil.)\n\ | |
3776 | Packages such as Ispell that work by splitting the selected frame\n\ | |
3777 | can bind this, so that they will work when used in an unsplittable frame."); | |
3778 | ||
7ab12479 JB |
3779 | defsubr (&Sselected_window); |
3780 | defsubr (&Sminibuffer_window); | |
3781 | defsubr (&Swindow_minibuffer_p); | |
3782 | defsubr (&Swindowp); | |
806b4d9b | 3783 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3784 | defsubr (&Spos_visible_in_window_p); |
3785 | defsubr (&Swindow_buffer); | |
3786 | defsubr (&Swindow_height); | |
3787 | defsubr (&Swindow_width); | |
3788 | defsubr (&Swindow_hscroll); | |
3789 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
3790 | defsubr (&Swindow_redisplay_end_trigger); |
3791 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 3792 | defsubr (&Swindow_edges); |
d5783c40 JB |
3793 | defsubr (&Scoordinates_in_window_p); |
3794 | defsubr (&Swindow_at); | |
7ab12479 JB |
3795 | defsubr (&Swindow_point); |
3796 | defsubr (&Swindow_start); | |
3797 | defsubr (&Swindow_end); | |
3798 | defsubr (&Sset_window_point); | |
3799 | defsubr (&Sset_window_start); | |
3800 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3801 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3802 | defsubr (&Swindow_display_table); |
3803 | defsubr (&Sset_window_display_table); | |
3804 | defsubr (&Snext_window); | |
3805 | defsubr (&Sprevious_window); | |
3806 | defsubr (&Sother_window); | |
3807 | defsubr (&Sget_lru_window); | |
3808 | defsubr (&Sget_largest_window); | |
3809 | defsubr (&Sget_buffer_window); | |
3810 | defsubr (&Sdelete_other_windows); | |
3811 | defsubr (&Sdelete_windows_on); | |
3812 | defsubr (&Sreplace_buffer_in_windows); | |
3813 | defsubr (&Sdelete_window); | |
3814 | defsubr (&Sset_window_buffer); | |
3815 | defsubr (&Sselect_window); | |
4628f7a4 EN |
3816 | defsubr (&Sspecial_display_p); |
3817 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
3818 | defsubr (&Sdisplay_buffer); |
3819 | defsubr (&Ssplit_window); | |
3820 | defsubr (&Senlarge_window); | |
3821 | defsubr (&Sshrink_window); | |
3822 | defsubr (&Sscroll_up); | |
3823 | defsubr (&Sscroll_down); | |
3824 | defsubr (&Sscroll_left); | |
3825 | defsubr (&Sscroll_right); | |
ccd0664b | 3826 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
3827 | defsubr (&Sscroll_other_window); |
3828 | defsubr (&Srecenter); | |
3829 | defsubr (&Smove_to_window_line); | |
3830 | defsubr (&Swindow_configuration_p); | |
3831 | defsubr (&Sset_window_configuration); | |
3832 | defsubr (&Scurrent_window_configuration); | |
3833 | defsubr (&Ssave_window_excursion); | |
3834 | } | |
3835 | ||
3836 | keys_of_window () | |
3837 | { | |
3838 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3839 | initial_define_key (control_x_map, '2', "split-window"); | |
3840 | initial_define_key (control_x_map, '0', "delete-window"); | |
3841 | initial_define_key (control_x_map, 'o', "other-window"); | |
3842 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3843 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3844 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3845 | ||
3846 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3847 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3848 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3849 | ||
3850 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3851 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3852 | } |