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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
89bca612 | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994 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 | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
18160b98 | 21 | #include <config.h> |
7ab12479 JB |
22 | #include "lisp.h" |
23 | #include "buffer.h" | |
44fa5b1e | 24 | #include "frame.h" |
7ab12479 JB |
25 | #include "window.h" |
26 | #include "commands.h" | |
27 | #include "indent.h" | |
28 | #include "termchar.h" | |
29 | #include "disptab.h" | |
f8026fd8 | 30 | #include "keyboard.h" |
7ab12479 | 31 | |
806b4d9b | 32 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 JB |
33 | |
34 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
35 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
36 | ||
fd482be5 | 37 | void delete_all_subwindows (); |
7ab12479 JB |
38 | static struct window *decode_window(); |
39 | ||
40 | /* This is the window in which the terminal's cursor should | |
41 | be left when nothing is being done with it. This must | |
42 | always be a leaf window, and its buffer is selected by | |
43 | the top level editing loop at the end of each command. | |
44 | ||
45 | This value is always the same as | |
44fa5b1e | 46 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
47 | |
48 | Lisp_Object selected_window; | |
49 | ||
44fa5b1e | 50 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
51 | Note that you cannot test for minibufferness of an arbitrary window |
52 | by comparing against this; but you can test for minibufferness of | |
53 | the selected window. */ | |
54 | Lisp_Object minibuf_window; | |
55 | ||
56 | /* Non-nil means it is the window for C-M-v to scroll | |
57 | when the minibuffer is selected. */ | |
58 | Lisp_Object Vminibuf_scroll_window; | |
59 | ||
60 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
61 | Lisp_Object Vother_window_scroll_buffer; | |
62 | ||
7ab12479 JB |
63 | /* Non-nil means it's function to call to display temp buffers. */ |
64 | Lisp_Object Vtemp_buffer_show_function; | |
65 | ||
66 | /* If a window gets smaller than either of these, it is removed. */ | |
67 | int window_min_height; | |
68 | int window_min_width; | |
69 | ||
70 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
71 | int pop_up_windows; | |
72 | ||
44fa5b1e JB |
73 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
74 | int pop_up_frames; | |
7ab12479 JB |
75 | |
76 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 77 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
78 | |
79 | /* Function to call to handle Fdisplay_buffer. */ | |
80 | Lisp_Object Vdisplay_buffer_function; | |
81 | ||
a90712c2 RS |
82 | /* List of buffer *names* for buffers that should have their own frames. */ |
83 | Lisp_Object Vspecial_display_buffer_names; | |
84 | ||
85 | /* List of regexps for buffer names that should have their own frames. */ | |
86 | Lisp_Object Vspecial_display_regexps; | |
87 | ||
88 | /* Function to pop up a special frame. */ | |
89 | Lisp_Object Vspecial_display_function; | |
90 | ||
855d8627 RS |
91 | /* List of buffer *names* for buffers to appear in selected window. */ |
92 | Lisp_Object Vsame_window_buffer_names; | |
93 | ||
94 | /* List of regexps for buffer names to appear in selected window. */ | |
95 | Lisp_Object Vsame_window_regexps; | |
96 | ||
a58ec57d RS |
97 | /* Hook run at end of temp_output_buffer_show. */ |
98 | Lisp_Object Qtemp_buffer_show_hook; | |
99 | ||
7ab12479 JB |
100 | /* Fdisplay_buffer always splits the largest window |
101 | if that window is more than this high. */ | |
102 | int split_height_threshold; | |
103 | ||
104 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
105 | int next_screen_context_lines; | |
106 | ||
107 | /* Incremented for each window created. */ | |
108 | static int sequence_number; | |
109 | ||
110 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
111 | \f | |
112 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
113 | "Returns t if OBJ is a window.") | |
114 | (obj) | |
115 | Lisp_Object obj; | |
116 | { | |
017b2bad | 117 | return WINDOWP (obj) ? Qt : Qnil; |
7ab12479 JB |
118 | } |
119 | ||
806b4d9b | 120 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
605be8af JB |
121 | "Returns t if OBJ is a window which is currently visible.") |
122 | (obj) | |
123 | Lisp_Object obj; | |
124 | { | |
017b2bad | 125 | return (WINDOWP (obj) && ! NILP (XWINDOW (obj)->buffer) ? Qt : Qnil); |
605be8af JB |
126 | } |
127 | ||
7ab12479 JB |
128 | Lisp_Object |
129 | make_window () | |
130 | { | |
cffec418 | 131 | Lisp_Object val; |
7ab12479 | 132 | register struct window *p; |
cffec418 KH |
133 | register struct Lisp_Vector *vec; |
134 | int i; | |
135 | ||
136 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
137 | for (i = 0; i < VECSIZE (struct window); i++) | |
138 | vec->contents[i] = Qnil; | |
139 | vec->size = VECSIZE (struct window); | |
140 | p = (struct window *)vec; | |
d834a2e9 KH |
141 | XSETFASTINT (p->sequence_number, ++sequence_number); |
142 | XSETFASTINT (p->left, 0); | |
143 | XSETFASTINT (p->top, 0); | |
144 | XSETFASTINT (p->height, 0); | |
145 | XSETFASTINT (p->width, 0); | |
146 | XSETFASTINT (p->hscroll, 0); | |
147 | XSETFASTINT (p->last_point_x, 0); | |
148 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
149 | p->start = Fmake_marker (); |
150 | p->pointm = Fmake_marker (); | |
d834a2e9 | 151 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 152 | p->frame = Qnil; |
7ab12479 JB |
153 | p->display_table = Qnil; |
154 | p->dedicated = Qnil; | |
cffec418 | 155 | XSETWINDOW (val, p); |
7ab12479 JB |
156 | return val; |
157 | } | |
158 | ||
159 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
160 | "Return the window that the cursor now appears in and commands apply to.") | |
161 | () | |
162 | { | |
163 | return selected_window; | |
164 | } | |
165 | ||
83762ba4 JB |
166 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
167 | "Return the window used now for minibuffers.\n\ | |
168 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
169 | used by that frame.") | |
170 | (frame) | |
171 | Lisp_Object frame; | |
7ab12479 | 172 | { |
44fa5b1e | 173 | #ifdef MULTI_FRAME |
83762ba4 | 174 | if (NILP (frame)) |
74112613 | 175 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
176 | else |
177 | CHECK_LIVE_FRAME (frame, 0); | |
178 | #endif | |
179 | ||
180 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
181 | } |
182 | ||
605be8af | 183 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
184 | "Returns non-nil if WINDOW is a minibuffer window.") |
185 | (window) | |
186 | Lisp_Object window; | |
187 | { | |
188 | struct window *w = decode_window (window); | |
189 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
190 | } | |
191 | ||
192 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
193 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 194 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
195 | Returns nil if that position is scrolled vertically out of view.\n\ |
196 | POS defaults to point; WINDOW, to the selected window.") | |
197 | (pos, window) | |
198 | Lisp_Object pos, window; | |
199 | { | |
200 | register struct window *w; | |
201 | register int top; | |
202 | register int height; | |
203 | register int posint; | |
204 | register struct buffer *buf; | |
205 | struct position posval; | |
afdb2485 | 206 | int hscroll; |
7ab12479 | 207 | |
265a9e55 | 208 | if (NILP (pos)) |
5ce7b543 | 209 | posint = PT; |
7ab12479 JB |
210 | else |
211 | { | |
212 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
213 | posint = XINT (pos); | |
214 | } | |
215 | ||
605be8af | 216 | w = decode_window (window); |
7ab12479 | 217 | top = marker_position (w->start); |
afdb2485 | 218 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
219 | |
220 | if (posint < top) | |
221 | return Qnil; | |
222 | ||
223 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
224 | ||
225 | buf = XBUFFER (w->buffer); | |
226 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
227 | { | |
44fa5b1e | 228 | /* If frame is up to date, |
7ab12479 JB |
229 | use the info recorded about how much text fit on it. */ |
230 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
231 | || (XFASTINT (w->window_end_vpos) < height)) | |
232 | return Qt; | |
233 | return Qnil; | |
234 | } | |
235 | else | |
236 | { | |
33eb4ede | 237 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
238 | return Qnil; |
239 | ||
61b5322b RS |
240 | /* w->start can be out of range. If it is, do something reasonable. */ |
241 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
242 | return Qnil; | |
243 | ||
7ab12479 | 244 | /* If that info is not correct, calculate afresh */ |
afdb2485 KH |
245 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), |
246 | posint, height, 0, | |
535e0b8e | 247 | window_internal_width (w) - 1, |
e37f06d7 | 248 | hscroll, 0, w); |
7ab12479 JB |
249 | |
250 | return posval.vpos < height ? Qt : Qnil; | |
251 | } | |
252 | } | |
253 | \f | |
254 | static struct window * | |
255 | decode_window (window) | |
256 | register Lisp_Object window; | |
257 | { | |
265a9e55 | 258 | if (NILP (window)) |
7ab12479 JB |
259 | return XWINDOW (selected_window); |
260 | ||
605be8af | 261 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
262 | return XWINDOW (window); |
263 | } | |
264 | ||
265 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
266 | "Return the buffer that WINDOW is displaying.") | |
267 | (window) | |
268 | Lisp_Object window; | |
269 | { | |
270 | return decode_window (window)->buffer; | |
271 | } | |
272 | ||
273 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
274 | "Return the number of lines in WINDOW (including its mode line).") | |
275 | (window) | |
276 | Lisp_Object window; | |
277 | { | |
278 | return decode_window (window)->height; | |
279 | } | |
280 | ||
281 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
282 | "Return the number of display columns in WINDOW.\n\ |
283 | This is the width that is usable columns available for text in WINDOW.\n\ | |
284 | If you want to find out how many columns WINDOW takes up,\n\ | |
285 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
286 | (window) |
287 | Lisp_Object window; | |
288 | { | |
ee61d94e | 289 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
290 | } |
291 | ||
292 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
293 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
294 | (window) | |
295 | Lisp_Object window; | |
296 | { | |
297 | return decode_window (window)->hscroll; | |
298 | } | |
299 | ||
300 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
301 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
302 | NCOL should be zero or positive.") | |
303 | (window, ncol) | |
304 | register Lisp_Object window, ncol; | |
305 | { | |
306 | register struct window *w; | |
307 | ||
308 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 309 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 JB |
310 | if (XFASTINT (ncol) >= (1 << (SHORTBITS - 1))) |
311 | args_out_of_range (ncol, Qnil); | |
312 | w = decode_window (window); | |
7f4161e0 | 313 | if (XINT (w->hscroll) != XINT (ncol)) |
7ab12479 JB |
314 | clip_changed = 1; /* Prevent redisplay shortcuts */ |
315 | w->hscroll = ncol; | |
316 | return ncol; | |
317 | } | |
318 | ||
319 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, | |
320 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 321 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
322 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
323 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
324 | and its mode-line.") | |
325 | (window) | |
326 | Lisp_Object window; | |
327 | { | |
328 | register struct window *w = decode_window (window); | |
329 | ||
330 | return Fcons (w->left, Fcons (w->top, | |
331 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
332 | Fcons (make_number (XFASTINT (w->top) | |
333 | + XFASTINT (w->height)), | |
334 | Qnil)))); | |
335 | } | |
336 | ||
d5783c40 JB |
337 | /* Test if the character at column *x, row *y is within window *w. |
338 | If it is not, return 0; | |
339 | if it is in the window's text area, | |
340 | set *x and *y to its location relative to the upper left corner | |
341 | of the window, and | |
342 | return 1; | |
343 | if it is on the window's modeline, return 2; | |
344 | if it is on the border between the window and its right sibling, | |
345 | return 3. */ | |
346 | static int | |
347 | coordinates_in_window (w, x, y) | |
348 | register struct window *w; | |
349 | register int *x, *y; | |
350 | { | |
351 | register int left = XINT (w->left); | |
352 | register int width = XINT (w->width); | |
353 | register int window_height = XINT (w->height); | |
354 | register int top = XFASTINT (w->top); | |
355 | ||
356 | if ( *x < left || *x >= left + width | |
357 | || *y < top || *y >= top + window_height) | |
358 | return 0; | |
359 | ||
360 | /* Is the character is the mode line? */ | |
361 | if (*y == top + window_height - 1 | |
05c2896a | 362 | && ! MINI_WINDOW_P (w)) |
d5783c40 JB |
363 | return 2; |
364 | ||
365 | /* Is the character in the right border? */ | |
366 | if (*x == left + width - 1 | |
44fa5b1e | 367 | && left + width != FRAME_WIDTH (XFRAME (w->frame))) |
d5783c40 JB |
368 | return 3; |
369 | ||
370 | *x -= left; | |
371 | *y -= top; | |
372 | return 1; | |
373 | } | |
374 | ||
375 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
376 | Scoordinates_in_window_p, 2, 2, 0, | |
377 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 378 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 379 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 380 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 381 | frame.\n\ |
d5783c40 JB |
382 | If COORDINATES are in the text portion of WINDOW,\n\ |
383 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 384 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 385 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 386 | `vertical-line' is returned.") |
d5783c40 JB |
387 | (coordinates, window) |
388 | register Lisp_Object coordinates, window; | |
389 | { | |
390 | int x, y; | |
391 | ||
605be8af | 392 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
393 | CHECK_CONS (coordinates, 1); |
394 | x = XINT (Fcar (coordinates)); | |
395 | y = XINT (Fcdr (coordinates)); | |
396 | ||
397 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
398 | { | |
399 | case 0: /* NOT in window at all. */ | |
400 | return Qnil; | |
401 | ||
402 | case 1: /* In text part of window. */ | |
403 | return Fcons (x, y); | |
404 | ||
405 | case 2: /* In mode line of window. */ | |
406 | return Qmode_line; | |
407 | ||
408 | case 3: /* On right border of window. */ | |
e5d77022 | 409 | return Qvertical_line; |
d5783c40 JB |
410 | |
411 | default: | |
412 | abort (); | |
413 | } | |
414 | } | |
415 | ||
7ab12479 | 416 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
417 | Lisp_Object. If x, y is on the window's modeline, set *part |
418 | to 1; if it is on the separating line between the window and its | |
419 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
420 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 421 | Lisp_Object |
44fa5b1e JB |
422 | window_from_coordinates (frame, x, y, part) |
423 | FRAME_PTR frame; | |
7ab12479 | 424 | int x, y; |
d5783c40 | 425 | int *part; |
7ab12479 JB |
426 | { |
427 | register Lisp_Object tem, first; | |
428 | ||
44fa5b1e | 429 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 430 | |
d5783c40 | 431 | do |
7ab12479 JB |
432 | { |
433 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
434 | ||
435 | if (found) | |
436 | { | |
d5783c40 | 437 | *part = found - 1; |
7ab12479 JB |
438 | return tem; |
439 | } | |
440 | ||
d5783c40 | 441 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 442 | } |
d5783c40 JB |
443 | while (! EQ (tem, first)); |
444 | ||
445 | return Qnil; | |
7ab12479 JB |
446 | } |
447 | ||
ab17c3f2 | 448 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 449 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
450 | If omitted, FRAME defaults to the currently selected frame.\n\ |
451 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 452 | column 0.") |
b0c33a94 RS |
453 | (x, y, frame) |
454 | Lisp_Object x, y, frame; | |
7ab12479 JB |
455 | { |
456 | int part; | |
457 | ||
4b206065 | 458 | #ifdef MULTI_FRAME |
44fa5b1e | 459 | if (NILP (frame)) |
74112613 | 460 | XSETFRAME (frame, selected_frame); |
d5783c40 | 461 | else |
44fa5b1e | 462 | CHECK_LIVE_FRAME (frame, 2); |
4b206065 | 463 | #endif |
b0c33a94 RS |
464 | CHECK_NUMBER (x, 0); |
465 | CHECK_NUMBER (y, 1); | |
7ab12479 | 466 | |
44fa5b1e | 467 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 468 | XINT (x), XINT (y), |
7ab12479 JB |
469 | &part); |
470 | } | |
471 | ||
472 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
473 | "Return current value of point in WINDOW.\n\ | |
474 | For a nonselected window, this is the value point would have\n\ | |
475 | if that window were selected.\n\ | |
476 | \n\ | |
477 | Note that, when WINDOW is the selected window and its buffer\n\ | |
478 | is also currently selected, the value returned is the same as (point).\n\ | |
479 | It would be more strictly correct to return the `top-level' value\n\ | |
480 | of point, outside of any save-excursion forms.\n\ | |
481 | But that is hard to define.") | |
482 | (window) | |
483 | Lisp_Object window; | |
484 | { | |
485 | register struct window *w = decode_window (window); | |
486 | ||
487 | if (w == XWINDOW (selected_window) | |
488 | && current_buffer == XBUFFER (w->buffer)) | |
489 | return Fpoint (); | |
490 | return Fmarker_position (w->pointm); | |
491 | } | |
492 | ||
493 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
494 | "Return position at which display currently starts in WINDOW.") | |
495 | (window) | |
496 | Lisp_Object window; | |
497 | { | |
498 | return Fmarker_position (decode_window (window)->start); | |
499 | } | |
500 | ||
8646118f RS |
501 | /* This is text temporarily removed from the doc string below. |
502 | ||
7250968e RS |
503 | This function returns nil if the position is not currently known.\n\ |
504 | That happens when redisplay is preempted and doesn't finish.\n\ | |
505 | If in that case you want to compute where the end of the window would\n\ | |
506 | have been if redisplay had finished, do this:\n\ | |
507 | (save-excursion\n\ | |
508 | (goto-char (window-start window))\n\ | |
509 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
510 | (point))") */ |
511 | ||
512 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
513 | "Return position at which display currently ends in WINDOW.\n\ | |
514 | This is updated by redisplay, when it runs to completion.\n\ | |
515 | Simply changing the buffer text or setting `window-start'\n\ | |
516 | does not update this value.") | |
7ab12479 JB |
517 | (window) |
518 | Lisp_Object window; | |
519 | { | |
520 | Lisp_Object value; | |
521 | struct window *w = decode_window (window); | |
5a41ab94 RS |
522 | Lisp_Object buf; |
523 | ||
524 | buf = w->buffer; | |
525 | CHECK_BUFFER (buf, 0); | |
526 | ||
8646118f | 527 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
528 | /* If we don't know the end position, return nil. |
529 | The user can compute it with vertical-motion if he wants to. | |
530 | It would be nicer to do it automatically, | |
531 | but that's so slow that it would probably bother people. */ | |
532 | if (NILP (w->window_end_valid)) | |
533 | return Qnil; | |
8646118f | 534 | #endif |
7250968e | 535 | |
74112613 KH |
536 | XSETINT (value, |
537 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
538 | |
539 | return value; | |
540 | } | |
541 | ||
542 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
543 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
544 | (window, pos) | |
545 | Lisp_Object window, pos; | |
546 | { | |
547 | register struct window *w = decode_window (window); | |
548 | ||
549 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
550 | if (w == XWINDOW (selected_window)) | |
551 | Fgoto_char (pos); | |
552 | else | |
553 | set_marker_restricted (w->pointm, pos, w->buffer); | |
554 | ||
555 | return pos; | |
556 | } | |
557 | ||
558 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
559 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
560 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
561 | from overriding motion of point in order to display at this exact start.") | |
562 | (window, pos, noforce) | |
563 | Lisp_Object window, pos, noforce; | |
564 | { | |
565 | register struct window *w = decode_window (window); | |
566 | ||
567 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
568 | set_marker_restricted (w->start, pos, w->buffer); | |
569 | /* this is not right, but much easier than doing what is right. */ | |
570 | w->start_at_line_beg = Qnil; | |
265a9e55 | 571 | if (NILP (noforce)) |
7ab12479 JB |
572 | w->force_start = Qt; |
573 | w->update_mode_line = Qt; | |
d834a2e9 | 574 | XSETFASTINT (w->last_modified, 0); |
62c07cc7 JB |
575 | if (!EQ (window, selected_window)) |
576 | windows_or_buffers_changed++; | |
7ab12479 JB |
577 | return pos; |
578 | } | |
579 | ||
580 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
581 | 1, 1, 0, | |
582 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 583 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
584 | (window) |
585 | Lisp_Object window; | |
586 | { | |
587 | return decode_window (window)->dedicated; | |
588 | } | |
589 | ||
d207b766 RS |
590 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
591 | Sset_window_dedicated_p, 2, 2, 0, | |
592 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
593 | If it is dedicated, Emacs will not automatically change\n\ | |
594 | which buffer appears in it.\n\ | |
595 | The second argument is the new value for the dedication flag;\n\ | |
596 | non-nil means yes.") | |
7ab12479 JB |
597 | (window, arg) |
598 | Lisp_Object window, arg; | |
599 | { | |
600 | register struct window *w = decode_window (window); | |
601 | ||
265a9e55 | 602 | if (NILP (arg)) |
7ab12479 JB |
603 | w->dedicated = Qnil; |
604 | else | |
d207b766 | 605 | w->dedicated = Qt; |
7ab12479 JB |
606 | |
607 | return w->dedicated; | |
608 | } | |
609 | ||
610 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
611 | 0, 1, 0, | |
612 | "Return the display-table that WINDOW is using.") | |
613 | (window) | |
614 | Lisp_Object window; | |
615 | { | |
616 | return decode_window (window)->display_table; | |
617 | } | |
618 | ||
619 | /* Get the display table for use currently on window W. | |
620 | This is either W's display table or W's buffer's display table. | |
621 | Ignore the specified tables if they are not valid; | |
622 | if no valid table is specified, return 0. */ | |
623 | ||
624 | struct Lisp_Vector * | |
625 | window_display_table (w) | |
626 | struct window *w; | |
627 | { | |
628 | Lisp_Object tem; | |
629 | tem = w->display_table; | |
017b2bad | 630 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
631 | return XVECTOR (tem); |
632 | tem = XBUFFER (w->buffer)->display_table; | |
017b2bad | 633 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
634 | return XVECTOR (tem); |
635 | tem = Vstandard_display_table; | |
017b2bad | 636 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
637 | return XVECTOR (tem); |
638 | return 0; | |
639 | } | |
640 | ||
3a2712f9 | 641 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
642 | "Set WINDOW's display-table to TABLE.") |
643 | (window, table) | |
644 | register Lisp_Object window, table; | |
645 | { | |
646 | register struct window *w; | |
647 | register Lisp_Object z; /* Return value. */ | |
648 | ||
649 | w = decode_window (window); | |
650 | w->display_table = table; | |
651 | return table; | |
652 | } | |
653 | \f | |
654 | /* Record info on buffer window w is displaying | |
655 | when it is about to cease to display that buffer. */ | |
656 | static | |
657 | unshow_buffer (w) | |
658 | register struct window *w; | |
659 | { | |
12cae7c0 | 660 | Lisp_Object buf; |
7ab12479 | 661 | |
12cae7c0 | 662 | buf = w->buffer; |
7ab12479 JB |
663 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) |
664 | abort (); | |
665 | ||
573f41ab | 666 | #if 0 |
7ab12479 JB |
667 | if (w == XWINDOW (selected_window) |
668 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
669 | /* Do this except when the selected window's buffer | |
670 | is being removed from some other window. */ | |
573f41ab RS |
671 | #endif |
672 | /* last_window_start records the start position that this buffer | |
673 | had in the last window to be disconnected from it. | |
674 | Now that this statement is unconditional, | |
675 | it is possible for the buffer to be displayed in the | |
676 | selected window, while last_window_start reflects another | |
677 | window which was recently showing the same buffer. | |
678 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
679 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
680 | ||
681 | /* Point in the selected window's buffer | |
682 | is actually stored in that buffer, and the window's pointm isn't used. | |
683 | So don't clobber point in that buffer. */ | |
684 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
685 | BUF_PT (XBUFFER (buf)) | |
686 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
687 | marker_position (w->pointm), | |
688 | BUF_ZV (XBUFFER (buf))); | |
689 | } | |
690 | ||
691 | /* Put replacement into the window structure in place of old. */ | |
692 | static | |
693 | replace_window (old, replacement) | |
694 | Lisp_Object old, replacement; | |
695 | { | |
696 | register Lisp_Object tem; | |
697 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
698 | ||
44fa5b1e JB |
699 | /* If OLD is its frame's root_window, then replacement is the new |
700 | root_window for that frame. */ | |
7ab12479 | 701 | |
7f4161e0 | 702 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 703 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
704 | |
705 | p->left = o->left; | |
706 | p->top = o->top; | |
707 | p->width = o->width; | |
708 | p->height = o->height; | |
709 | ||
710 | p->next = tem = o->next; | |
265a9e55 | 711 | if (!NILP (tem)) |
7ab12479 JB |
712 | XWINDOW (tem)->prev = replacement; |
713 | ||
714 | p->prev = tem = o->prev; | |
265a9e55 | 715 | if (!NILP (tem)) |
7ab12479 JB |
716 | XWINDOW (tem)->next = replacement; |
717 | ||
718 | p->parent = tem = o->parent; | |
265a9e55 | 719 | if (!NILP (tem)) |
7ab12479 JB |
720 | { |
721 | if (EQ (XWINDOW (tem)->vchild, old)) | |
722 | XWINDOW (tem)->vchild = replacement; | |
723 | if (EQ (XWINDOW (tem)->hchild, old)) | |
724 | XWINDOW (tem)->hchild = replacement; | |
725 | } | |
726 | ||
727 | /*** Here, if replacement is a vertical combination | |
728 | and so is its new parent, we should make replacement's | |
729 | children be children of that parent instead. ***/ | |
730 | } | |
731 | ||
732 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
733 | "Remove WINDOW from the display. Default is selected window.") | |
734 | (window) | |
735 | register Lisp_Object window; | |
736 | { | |
737 | register Lisp_Object tem, parent, sib; | |
738 | register struct window *p; | |
739 | register struct window *par; | |
740 | ||
605be8af JB |
741 | /* Because this function is called by other C code on non-leaf |
742 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
743 | so we can't decode_window here. */ | |
265a9e55 | 744 | if (NILP (window)) |
7ab12479 JB |
745 | window = selected_window; |
746 | else | |
747 | CHECK_WINDOW (window, 0); | |
7ab12479 | 748 | p = XWINDOW (window); |
605be8af JB |
749 | |
750 | /* It's okay to delete an already-deleted window. */ | |
751 | if (NILP (p->buffer) | |
752 | && NILP (p->hchild) | |
753 | && NILP (p->vchild)) | |
754 | return Qnil; | |
755 | ||
7ab12479 | 756 | parent = p->parent; |
265a9e55 | 757 | if (NILP (parent)) |
7ab12479 JB |
758 | error ("Attempt to delete minibuffer or sole ordinary window"); |
759 | par = XWINDOW (parent); | |
760 | ||
761 | windows_or_buffers_changed++; | |
29aeee73 | 762 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; |
7ab12479 | 763 | |
605be8af JB |
764 | /* Are we trying to delete any frame's selected window? */ |
765 | { | |
0def0403 | 766 | Lisp_Object frame, pwindow; |
605be8af | 767 | |
0def0403 RS |
768 | /* See if the frame's selected window is either WINDOW |
769 | or any subwindow of it, by finding all that window's parents | |
770 | and comparing each one with WINDOW. */ | |
771 | frame = WINDOW_FRAME (XWINDOW (window)); | |
772 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
773 | ||
774 | while (!NILP (pwindow)) | |
775 | { | |
776 | if (EQ (window, pwindow)) | |
777 | break; | |
778 | pwindow = XWINDOW (pwindow)->parent; | |
779 | } | |
780 | ||
781 | if (EQ (window, pwindow)) | |
605be8af | 782 | { |
89bca612 RS |
783 | Lisp_Object alternative; |
784 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
785 | |
786 | /* If we're about to delete the selected window on the | |
787 | selected frame, then we should use Fselect_window to select | |
788 | the new window. On the other hand, if we're about to | |
789 | delete the selected window on any other frame, we shouldn't do | |
790 | anything but set the frame's selected_window slot. */ | |
791 | if (EQ (window, selected_window)) | |
792 | Fselect_window (alternative); | |
793 | else | |
0def0403 | 794 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
795 | } |
796 | } | |
7ab12479 JB |
797 | |
798 | tem = p->buffer; | |
799 | /* tem is null for dummy parent windows | |
800 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 801 | if (!NILP (tem)) |
7ab12479 JB |
802 | { |
803 | unshow_buffer (p); | |
804 | unchain_marker (p->pointm); | |
805 | unchain_marker (p->start); | |
7ab12479 JB |
806 | } |
807 | ||
808 | tem = p->next; | |
265a9e55 | 809 | if (!NILP (tem)) |
7ab12479 JB |
810 | XWINDOW (tem)->prev = p->prev; |
811 | ||
812 | tem = p->prev; | |
265a9e55 | 813 | if (!NILP (tem)) |
7ab12479 JB |
814 | XWINDOW (tem)->next = p->next; |
815 | ||
816 | if (EQ (window, par->hchild)) | |
817 | par->hchild = p->next; | |
818 | if (EQ (window, par->vchild)) | |
819 | par->vchild = p->next; | |
820 | ||
821 | /* Find one of our siblings to give our space to. */ | |
822 | sib = p->prev; | |
265a9e55 | 823 | if (NILP (sib)) |
7ab12479 JB |
824 | { |
825 | /* If p gives its space to its next sibling, that sibling needs | |
826 | to have its top/left side pulled back to where p's is. | |
827 | set_window_{height,width} will re-position the sibling's | |
828 | children. */ | |
829 | sib = p->next; | |
7f4161e0 JB |
830 | XWINDOW (sib)->top = p->top; |
831 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
832 | } |
833 | ||
834 | /* Stretch that sibling. */ | |
265a9e55 | 835 | if (!NILP (par->vchild)) |
7ab12479 JB |
836 | set_window_height (sib, |
837 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
838 | 1); | |
265a9e55 | 839 | if (!NILP (par->hchild)) |
7ab12479 JB |
840 | set_window_width (sib, |
841 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
842 | 1); | |
843 | ||
844 | /* If parent now has only one child, | |
845 | put the child into the parent's place. */ | |
7ab12479 | 846 | tem = par->hchild; |
265a9e55 | 847 | if (NILP (tem)) |
7ab12479 | 848 | tem = par->vchild; |
265a9e55 | 849 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 850 | replace_window (parent, tem); |
605be8af JB |
851 | |
852 | /* Since we may be deleting combination windows, we must make sure that | |
853 | not only p but all its children have been marked as deleted. */ | |
854 | if (! NILP (p->hchild)) | |
855 | delete_all_subwindows (XWINDOW (p->hchild)); | |
856 | else if (! NILP (p->vchild)) | |
857 | delete_all_subwindows (XWINDOW (p->vchild)); | |
858 | ||
859 | /* Mark this window as deleted. */ | |
860 | p->buffer = p->hchild = p->vchild = Qnil; | |
861 | ||
7ab12479 JB |
862 | return Qnil; |
863 | } | |
864 | \f | |
7ab12479 | 865 | |
44fa5b1e | 866 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 867 | |
26f6279d JB |
868 | /* This comment supplies the doc string for `next-window', |
869 | for make-docfile to see. We cannot put this in the real DEFUN | |
870 | due to limits in the Unix cpp. | |
871 | ||
872 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 873 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
874 | If omitted, WINDOW defaults to the selected window.\n\ |
875 | \n\ | |
876 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
877 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
878 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
879 | minibuffer even if it is active.\n\ | |
880 | \n\ | |
44fa5b1e JB |
881 | Several frames may share a single minibuffer; if the minibuffer\n\ |
882 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 883 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
884 | set of windows even when the minibuffer is on another frame. If the\n\ |
885 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 886 | \n\ |
44fa5b1e JB |
887 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
888 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 889 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 890 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
89bca612 | 891 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
892 | \n\ |
893 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
894 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
895 | windows, eventually ending up back at the window you started with.\n\ | |
896 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
897 | (window, minibuf, all_frames) */ |
898 | ||
899 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
900 | 0) | |
44fa5b1e JB |
901 | (window, minibuf, all_frames) |
902 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
903 | { |
904 | register Lisp_Object tem; | |
d5783c40 | 905 | Lisp_Object start_window; |
7ab12479 | 906 | |
265a9e55 | 907 | if (NILP (window)) |
7ab12479 JB |
908 | window = selected_window; |
909 | else | |
605be8af | 910 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 911 | |
d5783c40 JB |
912 | start_window = window; |
913 | ||
914 | /* minibuf == nil may or may not include minibuffers. | |
915 | Decide if it does. */ | |
265a9e55 | 916 | if (NILP (minibuf)) |
d5783c40 JB |
917 | minibuf = (minibuf_level ? Qt : Qlambda); |
918 | ||
c6e73093 | 919 | #ifdef MULTI_FRAME |
1bb80f72 | 920 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e JB |
921 | if (NILP (all_frames)) |
922 | all_frames = (EQ (minibuf, Qt) | |
1bb80f72 RS |
923 | ? (FRAME_MINIBUF_WINDOW |
924 | (XFRAME | |
925 | (WINDOW_FRAME | |
926 | (XWINDOW (window))))) | |
927 | : Qnil); | |
89bca612 RS |
928 | else if (EQ (all_frames, Qvisible)) |
929 | ; | |
f812f9c6 RS |
930 | else if (XFASTINT (all_frames) == 0) |
931 | ; | |
44fa5b1e JB |
932 | else if (! EQ (all_frames, Qt)) |
933 | all_frames = Qnil; | |
644b477c RS |
934 | /* Now all_frames is t meaning search all frames, |
935 | nil meaning search just current frame, | |
f812f9c6 RS |
936 | visible meaning search just visible frames, |
937 | 0 meaning search visible and iconified frames, | |
644b477c | 938 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 939 | #endif |
7ab12479 JB |
940 | |
941 | /* Do this loop at least once, to get the next window, and perhaps | |
942 | again, if we hit the minibuffer and that is not acceptable. */ | |
943 | do | |
944 | { | |
945 | /* Find a window that actually has a next one. This loop | |
946 | climbs up the tree. */ | |
265a9e55 JB |
947 | while (tem = XWINDOW (window)->next, NILP (tem)) |
948 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 949 | window = tem; |
d5783c40 | 950 | else |
7ab12479 | 951 | { |
44fa5b1e JB |
952 | /* We've reached the end of this frame. |
953 | Which other frames are acceptable? */ | |
954 | tem = WINDOW_FRAME (XWINDOW (window)); | |
955 | #ifdef MULTI_FRAME | |
956 | if (! NILP (all_frames)) | |
1bb80f72 RS |
957 | { |
958 | Lisp_Object tem1; | |
959 | ||
960 | tem1 = tem; | |
961 | tem = next_frame (tem, all_frames); | |
962 | /* In the case where the minibuffer is active, | |
963 | and we include its frame as well as the selected one, | |
964 | next_frame may get stuck in that frame. | |
965 | If that happens, go back to the selected frame | |
966 | so we can complete the cycle. */ | |
967 | if (EQ (tem, tem1)) | |
74112613 | 968 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 969 | } |
7ab12479 | 970 | #endif |
44fa5b1e | 971 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 972 | |
7ab12479 JB |
973 | break; |
974 | } | |
975 | ||
976 | window = tem; | |
d5783c40 | 977 | |
7ab12479 JB |
978 | /* If we're in a combination window, find its first child and |
979 | recurse on that. Otherwise, we've found the window we want. */ | |
980 | while (1) | |
981 | { | |
265a9e55 | 982 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 983 | window = XWINDOW (window)->hchild; |
265a9e55 | 984 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
985 | window = XWINDOW (window)->vchild; |
986 | else break; | |
987 | } | |
988 | } | |
d5783c40 JB |
989 | /* Which windows are acceptible? |
990 | Exit the loop and accept this window if | |
7ab12479 | 991 | this isn't a minibuffer window, or |
d5783c40 JB |
992 | we're accepting minibuffer windows, or |
993 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 994 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 995 | && ! EQ (minibuf, Qt) |
7f4161e0 | 996 | && ! EQ (window, start_window)); |
7ab12479 JB |
997 | |
998 | return window; | |
999 | } | |
1000 | ||
26f6279d JB |
1001 | /* This comment supplies the doc string for `previous-window', |
1002 | for make-docfile to see. We cannot put this in the real DEFUN | |
1003 | due to limits in the Unix cpp. | |
1004 | ||
1005 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
d5783c40 JB |
1006 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
1007 | If omitted, WINDOW defaults to the selected window.\n\ | |
1008 | \n\ | |
1009 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1010 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1011 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1012 | minibuffer even if it is active.\n\ | |
1013 | \n\ | |
44fa5b1e JB |
1014 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1015 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1016 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1017 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1018 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1019 | \n\ |
44fa5b1e JB |
1020 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1021 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1022 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1023 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
89bca612 | 1024 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1025 | \n\ |
1026 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1027 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1028 | windows, eventually ending up back at the window you started with.\n\ | |
1029 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1030 | (window, minibuf, all_frames) */ |
1031 | ||
1032 | ||
1033 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1034 | 0) | |
44fa5b1e JB |
1035 | (window, minibuf, all_frames) |
1036 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1037 | { |
1038 | register Lisp_Object tem; | |
d5783c40 | 1039 | Lisp_Object start_window; |
7ab12479 | 1040 | |
265a9e55 | 1041 | if (NILP (window)) |
7ab12479 JB |
1042 | window = selected_window; |
1043 | else | |
605be8af | 1044 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1045 | |
d5783c40 JB |
1046 | start_window = window; |
1047 | ||
1048 | /* minibuf == nil may or may not include minibuffers. | |
1049 | Decide if it does. */ | |
265a9e55 | 1050 | if (NILP (minibuf)) |
d5783c40 JB |
1051 | minibuf = (minibuf_level ? Qt : Qlambda); |
1052 | ||
c6e73093 | 1053 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1054 | /* all_frames == nil doesn't specify which frames to include. |
1055 | Decide which frames it includes. */ | |
1056 | if (NILP (all_frames)) | |
1057 | all_frames = (EQ (minibuf, Qt) | |
1058 | ? (FRAME_MINIBUF_WINDOW | |
1059 | (XFRAME | |
1060 | (WINDOW_FRAME | |
d5783c40 JB |
1061 | (XWINDOW (window))))) |
1062 | : Qnil); | |
89bca612 RS |
1063 | else if (EQ (all_frames, Qvisible)) |
1064 | ; | |
f812f9c6 RS |
1065 | else if (XFASTINT (all_frames) == 0) |
1066 | ; | |
44fa5b1e JB |
1067 | else if (! EQ (all_frames, Qt)) |
1068 | all_frames = Qnil; | |
644b477c RS |
1069 | /* Now all_frames is t meaning search all frames, |
1070 | nil meaning search just current frame, | |
f812f9c6 RS |
1071 | visible meaning search just visible frames, |
1072 | 0 meaning search visible and iconified frames, | |
644b477c | 1073 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 1074 | #endif |
7ab12479 JB |
1075 | |
1076 | /* Do this loop at least once, to get the previous window, and perhaps | |
1077 | again, if we hit the minibuffer and that is not acceptable. */ | |
1078 | do | |
1079 | { | |
1080 | /* Find a window that actually has a previous one. This loop | |
1081 | climbs up the tree. */ | |
265a9e55 JB |
1082 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1083 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1084 | window = tem; |
d5783c40 | 1085 | else |
7ab12479 | 1086 | { |
44fa5b1e JB |
1087 | /* We have found the top window on the frame. |
1088 | Which frames are acceptable? */ | |
1089 | tem = WINDOW_FRAME (XWINDOW (window)); | |
1090 | #ifdef MULTI_FRAME | |
1091 | if (! NILP (all_frames)) | |
dbc4e1c1 JB |
1092 | /* It's actually important that we use prev_frame here, |
1093 | rather than next_frame. All the windows acceptable | |
1094 | according to the given parameters should form a ring; | |
1095 | Fnext_window and Fprevious_window should go back and | |
1096 | forth around the ring. If we use next_frame here, | |
1097 | then Fnext_window and Fprevious_window take different | |
1098 | paths through the set of acceptable windows. | |
1099 | window_loop assumes that these `ring' requirement are | |
1100 | met. */ | |
1bb80f72 RS |
1101 | { |
1102 | Lisp_Object tem1; | |
1103 | ||
1104 | tem1 = tem; | |
1105 | tem = prev_frame (tem, all_frames); | |
1106 | /* In the case where the minibuffer is active, | |
1107 | and we include its frame as well as the selected one, | |
1108 | next_frame may get stuck in that frame. | |
1109 | If that happens, go back to the selected frame | |
1110 | so we can complete the cycle. */ | |
1111 | if (EQ (tem, tem1)) | |
74112613 | 1112 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1113 | } |
7ab12479 | 1114 | #endif |
644b477c RS |
1115 | /* If this frame has a minibuffer, find that window first, |
1116 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1117 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1118 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1119 | else | |
644b477c | 1120 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1121 | |
7ab12479 JB |
1122 | break; |
1123 | } | |
1124 | ||
1125 | window = tem; | |
1126 | /* If we're in a combination window, find its last child and | |
1127 | recurse on that. Otherwise, we've found the window we want. */ | |
1128 | while (1) | |
1129 | { | |
265a9e55 | 1130 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1131 | window = XWINDOW (window)->hchild; |
265a9e55 | 1132 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1133 | window = XWINDOW (window)->vchild; |
1134 | else break; | |
265a9e55 | 1135 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1136 | window = tem; |
1137 | } | |
1138 | } | |
d5783c40 JB |
1139 | /* Which windows are acceptable? |
1140 | Exit the loop and accept this window if | |
7ab12479 | 1141 | this isn't a minibuffer window, or |
d5783c40 JB |
1142 | we're accepting minibuffer windows, or |
1143 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 1144 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1145 | && !EQ (minibuf, Qt) |
7f4161e0 | 1146 | && !EQ (window, start_window)); |
7ab12479 JB |
1147 | |
1148 | return window; | |
1149 | } | |
1150 | ||
62c07cc7 | 1151 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1152 | "Select the ARG'th different window on this frame.\n\ |
1153 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1154 | This command selects the window ARG steps away in that order.\n\ |
1155 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e JB |
1156 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
1157 | (n, all_frames) | |
1158 | register Lisp_Object n, all_frames; | |
7ab12479 JB |
1159 | { |
1160 | register int i; | |
1161 | register Lisp_Object w; | |
1162 | ||
1163 | CHECK_NUMBER (n, 0); | |
1164 | w = selected_window; | |
1165 | i = XINT (n); | |
1166 | ||
1167 | while (i > 0) | |
1168 | { | |
44fa5b1e | 1169 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1170 | i--; |
1171 | } | |
1172 | while (i < 0) | |
1173 | { | |
44fa5b1e | 1174 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1175 | i++; |
1176 | } | |
1177 | Fselect_window (w); | |
1178 | return Qnil; | |
1179 | } | |
1180 | \f | |
1181 | /* Look at all windows, performing an operation specified by TYPE | |
1182 | with argument OBJ. | |
75d8f668 | 1183 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1184 | Qnil, look at just the selected frame; |
89bca612 | 1185 | Qvisible, look at visible frames; |
75d8f668 | 1186 | a frame, just look at windows on that frame. |
7ab12479 JB |
1187 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1188 | */ | |
1189 | ||
1190 | enum window_loop | |
1191 | { | |
1192 | WINDOW_LOOP_UNUSED, | |
1193 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1194 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1195 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1196 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1197 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1198 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1199 | }; |
1200 | ||
1201 | static Lisp_Object | |
44fa5b1e | 1202 | window_loop (type, obj, mini, frames) |
7ab12479 | 1203 | enum window_loop type; |
44fa5b1e | 1204 | register Lisp_Object obj, frames; |
7ab12479 JB |
1205 | int mini; |
1206 | { | |
1207 | register Lisp_Object w; | |
1208 | register Lisp_Object best_window; | |
1209 | register Lisp_Object next_window; | |
4b206065 | 1210 | register Lisp_Object last_window; |
44fa5b1e | 1211 | FRAME_PTR frame; |
89bca612 RS |
1212 | Lisp_Object frame_arg; |
1213 | frame_arg = Qt; | |
44fa5b1e | 1214 | |
4b206065 | 1215 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1216 | /* If we're only looping through windows on a particular frame, |
1217 | frame points to that frame. If we're looping through windows | |
1218 | on all frames, frame is 0. */ | |
1219 | if (FRAMEP (frames)) | |
1220 | frame = XFRAME (frames); | |
1221 | else if (NILP (frames)) | |
1222 | frame = selected_frame; | |
7ab12479 | 1223 | else |
44fa5b1e | 1224 | frame = 0; |
89bca612 RS |
1225 | if (frame) |
1226 | frame_arg = Qlambda; | |
f812f9c6 RS |
1227 | else if (XFASTINT (frames) == 0) |
1228 | frame_arg = frames; | |
89bca612 RS |
1229 | else if (EQ (frames, Qvisible)) |
1230 | frame_arg = frames; | |
4b206065 JB |
1231 | #else |
1232 | frame = 0; | |
1233 | #endif | |
7ab12479 | 1234 | |
89bca612 RS |
1235 | /* frame_arg is Qlambda to stick to one frame, |
1236 | Qvisible to consider all visible frames, | |
1237 | or Qt otherwise. */ | |
1238 | ||
7ab12479 | 1239 | /* Pick a window to start with. */ |
017b2bad | 1240 | if (WINDOWP (obj)) |
4b206065 | 1241 | w = obj; |
44fa5b1e | 1242 | else if (frame) |
4b206065 | 1243 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1244 | else |
4b206065 JB |
1245 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1246 | ||
1247 | /* Figure out the last window we're going to mess with. Since | |
1248 | Fnext_window, given the same options, is guaranteed to go in a | |
1249 | ring, we can just use Fprevious_window to find the last one. | |
1250 | ||
1251 | We can't just wait until we hit the first window again, because | |
1252 | it might be deleted. */ | |
1253 | ||
89bca612 | 1254 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1255 | |
7ab12479 | 1256 | best_window = Qnil; |
4b206065 | 1257 | for (;;) |
7ab12479 | 1258 | { |
75d8f668 JB |
1259 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1260 | ||
7ab12479 JB |
1261 | /* Pick the next window now, since some operations will delete |
1262 | the current window. */ | |
89bca612 | 1263 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1264 | |
d29a5631 RS |
1265 | /* Note that we do not pay attention here to whether |
1266 | the frame is visible, since Fnext_window skips non-visible frames | |
1267 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1268 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1269 | || (mini && minibuf_level > 0)) |
1270 | switch (type) | |
1271 | { | |
1272 | case GET_BUFFER_WINDOW: | |
7ab12479 JB |
1273 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) |
1274 | return w; | |
1275 | break; | |
1276 | ||
1277 | case GET_LRU_WINDOW: | |
1278 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1279 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
a2db42d6 | 1280 | != FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (w))))) |
7ab12479 | 1281 | break; |
7ab12479 JB |
1282 | /* Ignore dedicated windows and minibuffers. */ |
1283 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1284 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1285 | break; |
265a9e55 | 1286 | if (NILP (best_window) |
7ab12479 JB |
1287 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1288 | > XFASTINT (XWINDOW (w)->use_time))) | |
1289 | best_window = w; | |
1290 | break; | |
1291 | ||
1292 | case DELETE_OTHER_WINDOWS: | |
1293 | if (XWINDOW (w) != XWINDOW (obj)) | |
1294 | Fdelete_window (w); | |
1295 | break; | |
1296 | ||
1297 | case DELETE_BUFFER_WINDOWS: | |
1298 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1299 | { | |
3548e138 RS |
1300 | #ifdef MULTI_FRAME |
1301 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); | |
1302 | ||
1303 | /* If this window is dedicated, and in a frame of its own, | |
1304 | kill the frame. */ | |
1305 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1306 | && !NILP (XWINDOW (w)->dedicated) | |
1307 | && other_visible_frames (f)) | |
7ab12479 | 1308 | { |
3548e138 RS |
1309 | /* Skip the other windows on this frame. |
1310 | There might be one, the minibuffer! */ | |
1311 | if (! EQ (w, last_window)) | |
1312 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1313 | { | |
1314 | /* As we go, check for the end of the loop. | |
1315 | We mustn't start going around a second time. */ | |
1316 | if (EQ (next_window, last_window)) | |
1317 | { | |
1318 | last_window = w; | |
1319 | break; | |
1320 | } | |
1321 | next_window = Fnext_window (next_window, | |
1322 | mini ? Qt : Qnil, | |
1323 | frame_arg); | |
1324 | } | |
1325 | /* Now we can safely delete the frame. */ | |
1326 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1327 | } |
1328 | else | |
3548e138 RS |
1329 | #endif |
1330 | /* If we're deleting the buffer displayed in the only window | |
1331 | on the frame, find a new buffer to display there. */ | |
1332 | if (NILP (XWINDOW (w)->parent)) | |
1333 | { | |
1334 | Lisp_Object new_buffer; | |
1335 | new_buffer = Fother_buffer (obj, Qnil); | |
1336 | if (NILP (new_buffer)) | |
1337 | new_buffer | |
1338 | = Fget_buffer_create (build_string ("*scratch*")); | |
1339 | Fset_window_buffer (w, new_buffer); | |
1340 | if (EQ (w, selected_window)) | |
1341 | Fset_buffer (XWINDOW (w)->buffer); | |
1342 | } | |
1343 | else | |
1344 | Fdelete_window (w); | |
7ab12479 JB |
1345 | } |
1346 | break; | |
1347 | ||
1348 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1349 | /* Ignore dedicated windows and minibuffers. */ |
1350 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1351 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1352 | break; |
1353 | { | |
1354 | struct window *best_window_ptr = XWINDOW (best_window); | |
1355 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1356 | if (NILP (best_window) |
1357 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1358 | > (XFASTINT (best_window_ptr->height) | |
1359 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1360 | best_window = w; |
1361 | } | |
1362 | break; | |
1363 | ||
1364 | case UNSHOW_BUFFER: | |
1365 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1366 | { | |
1367 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1368 | Lisp_Object another_buffer; |
38ab08d1 | 1369 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1370 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1371 | if (NILP (another_buffer)) |
7ab12479 JB |
1372 | another_buffer |
1373 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1374 | #ifdef MULTI_FRAME |
1375 | /* If this window is dedicated, and in a frame of its own, | |
1376 | kill the frame. */ | |
1377 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1378 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1379 | && other_visible_frames (f)) |
45945a7b RS |
1380 | { |
1381 | /* Skip the other windows on this frame. | |
1382 | There might be one, the minibuffer! */ | |
1383 | if (! EQ (w, last_window)) | |
1384 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1385 | { | |
1386 | /* As we go, check for the end of the loop. | |
1387 | We mustn't start going around a second time. */ | |
1388 | if (EQ (next_window, last_window)) | |
1389 | { | |
1390 | last_window = w; | |
1391 | break; | |
1392 | } | |
1393 | next_window = Fnext_window (next_window, | |
1394 | mini ? Qt : Qnil, | |
1395 | frame_arg); | |
1396 | } | |
1397 | /* Now we can safely delete the frame. */ | |
1398 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1399 | } | |
38ab08d1 RS |
1400 | else |
1401 | #endif | |
1402 | { | |
1403 | /* Otherwise show a different buffer in the window. */ | |
1404 | XWINDOW (w)->dedicated = Qnil; | |
1405 | Fset_window_buffer (w, another_buffer); | |
1406 | if (EQ (w, selected_window)) | |
1407 | Fset_buffer (XWINDOW (w)->buffer); | |
1408 | } | |
7ab12479 JB |
1409 | } |
1410 | break; | |
1411 | } | |
4b206065 JB |
1412 | |
1413 | if (EQ (w, last_window)) | |
1414 | break; | |
1415 | ||
7ab12479 JB |
1416 | w = next_window; |
1417 | } | |
7ab12479 JB |
1418 | |
1419 | return best_window; | |
1420 | } | |
605be8af | 1421 | |
7ab12479 JB |
1422 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1423 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1424 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1425 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1426 | If FRAME is t, search all frames.\n\ |
1427 | If FRAME is nil, search only the selected frame.\n\ | |
1428 | If FRAME is a frame, search only that frame.") | |
1429 | (frame) | |
1430 | Lisp_Object frame; | |
7ab12479 JB |
1431 | { |
1432 | register Lisp_Object w; | |
1433 | /* First try for a window that is full-width */ | |
89bca612 | 1434 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1435 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1436 | return w; |
1437 | /* If none of them, try the rest */ | |
89bca612 | 1438 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1439 | } |
1440 | ||
1441 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1442 | "Return the largest window in area.\n\ | |
89bca612 | 1443 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1444 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1445 | If FRAME is t, search all frames.\n\ |
1446 | If FRAME is nil, search only the selected frame.\n\ | |
1447 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1448 | (frame) |
1449 | Lisp_Object frame; | |
7ab12479 JB |
1450 | { |
1451 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1452 | frame); |
7ab12479 JB |
1453 | } |
1454 | ||
1455 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1456 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1457 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1458 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1459 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1460 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1461 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1462 | (buffer, frame) |
1463 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1464 | { |
1465 | buffer = Fget_buffer (buffer); | |
017b2bad | 1466 | if (BUFFERP (buffer)) |
44fa5b1e | 1467 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1468 | else |
1469 | return Qnil; | |
1470 | } | |
1471 | ||
1472 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1473 | 0, 1, "", | |
44fa5b1e | 1474 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1475 | Only the frame WINDOW is on is affected.\n\ |
1476 | This function tries to reduce display jumps\n\ | |
1477 | by keeping the text previously visible in WINDOW\n\ | |
1478 | in the same place on the frame. Doing this depends on\n\ | |
1479 | the value of (window-start WINDOW), so if calling this function\n\ | |
1480 | in a program gives strange scrolling, make sure the window-start\n\ | |
1481 | value is reasonable when this function is called.") | |
7ab12479 JB |
1482 | (window) |
1483 | Lisp_Object window; | |
1484 | { | |
1485 | struct window *w; | |
00d3d838 | 1486 | int startpos; |
7ab12479 JB |
1487 | int top; |
1488 | ||
265a9e55 | 1489 | if (NILP (window)) |
7ab12479 JB |
1490 | window = selected_window; |
1491 | else | |
605be8af | 1492 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1493 | |
1494 | w = XWINDOW (window); | |
a2b38b3c | 1495 | |
00d3d838 KH |
1496 | startpos = marker_position (w->start); |
1497 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1498 | |
a2b38b3c RS |
1499 | if (MINI_WINDOW_P (w) && top > 0) |
1500 | error ("Can't expand minibuffer to full frame"); | |
1501 | ||
70728a80 | 1502 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1503 | |
00d3d838 KH |
1504 | /* Try to minimize scrolling, by setting the window start to the point |
1505 | will cause the text at the old window start to be at the same place | |
1506 | on the frame. But don't try to do this if the window start is | |
1507 | outside the visible portion (as might happen when the display is | |
1508 | not current, due to typeahead). */ | |
1509 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1510 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1511 | { | |
1512 | struct position pos; | |
1513 | struct buffer *obuf = current_buffer; | |
1514 | ||
1515 | Fset_buffer (w->buffer); | |
1516 | /* This computation used to temporarily move point, but that can | |
1517 | have unwanted side effects due to text properties. */ | |
1518 | pos = *vmotion (startpos, -top, window_internal_width (w) - 1, | |
1519 | XINT (w->hscroll), window); | |
1520 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); | |
1521 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
1522 | || FETCH_CHAR (pos.bufpos - 1) == '\n') ? Qt | |
1523 | : Qnil); | |
1524 | ||
1525 | set_buffer_internal (obuf); | |
1526 | } | |
7ab12479 JB |
1527 | return Qnil; |
1528 | } | |
1529 | ||
1530 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1531 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1532 | "Delete all windows showing BUFFER.\n\ |
1533 | Optional second argument FRAME controls which frames are affected.\n\ | |
1534 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1535 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1536 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1537 | If a frame, delete only windows showing BUFFER in that frame.") |
1538 | (buffer, frame) | |
1539 | Lisp_Object buffer, frame; | |
7ab12479 | 1540 | { |
26f6279d JB |
1541 | #ifdef MULTI_FRAME |
1542 | /* FRAME uses t and nil to mean the opposite of what window_loop | |
1543 | expects. */ | |
1544 | if (! FRAMEP (frame)) | |
1545 | frame = NILP (frame) ? Qt : Qnil; | |
1546 | #else | |
1547 | frame = Qt; | |
1548 | #endif | |
1549 | ||
265a9e55 | 1550 | if (!NILP (buffer)) |
7ab12479 JB |
1551 | { |
1552 | buffer = Fget_buffer (buffer); | |
1553 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1554 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1555 | } |
1556 | return Qnil; | |
1557 | } | |
1558 | ||
1559 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1560 | Sreplace_buffer_in_windows, | |
1561 | 1, 1, "bReplace buffer in windows: ", | |
1562 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1563 | (buffer) | |
1564 | Lisp_Object buffer; | |
1565 | { | |
265a9e55 | 1566 | if (!NILP (buffer)) |
7ab12479 JB |
1567 | { |
1568 | buffer = Fget_buffer (buffer); | |
1569 | CHECK_BUFFER (buffer, 0); | |
1570 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1571 | } | |
1572 | return Qnil; | |
1573 | } | |
1574 | \f | |
1575 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1576 | |
1577 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1578 | might crash Emacs. */ | |
1579 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1580 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1581 | ||
1582 | /* Make sure that window_min_height and window_min_width are | |
1583 | not too small; if they are, set them to safe minima. */ | |
1584 | ||
1585 | static void | |
1586 | check_min_window_sizes () | |
1587 | { | |
1588 | /* Smaller values might permit a crash. */ | |
1589 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1590 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1591 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1592 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1593 | } | |
1594 | ||
1595 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1596 | minimum allowable size. */ | |
605be8af | 1597 | void |
a481b3ea | 1598 | check_frame_size (frame, rows, cols) |
605be8af JB |
1599 | FRAME_PTR frame; |
1600 | int *rows, *cols; | |
a481b3ea | 1601 | { |
628df3bf JB |
1602 | /* For height, we have to see: |
1603 | whether the frame has a minibuffer, | |
1604 | whether it wants a mode line, and | |
1605 | whether it has a menu bar. */ | |
a481b3ea | 1606 | int min_height = |
79f92720 JB |
1607 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1608 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1609 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1610 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1611 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1612 | |
1613 | if (*rows < min_height) | |
1614 | *rows = min_height; | |
1615 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1616 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1617 | } | |
1618 | ||
7ab12479 JB |
1619 | /* Normally the window is deleted if it gets too small. |
1620 | nodelete nonzero means do not do this. | |
1621 | (The caller should check later and do so if appropriate) */ | |
1622 | ||
1623 | set_window_height (window, height, nodelete) | |
1624 | Lisp_Object window; | |
1625 | int height; | |
1626 | int nodelete; | |
1627 | { | |
1628 | register struct window *w = XWINDOW (window); | |
1629 | register struct window *c; | |
1630 | int oheight = XFASTINT (w->height); | |
1631 | int top, pos, lastbot, opos, lastobot; | |
1632 | Lisp_Object child; | |
1633 | ||
a481b3ea JB |
1634 | check_min_window_sizes (); |
1635 | ||
7ab12479 | 1636 | if (!nodelete |
265a9e55 | 1637 | && ! NILP (w->parent) |
7ab12479 JB |
1638 | && height < window_min_height) |
1639 | { | |
1640 | Fdelete_window (window); | |
1641 | return; | |
1642 | } | |
1643 | ||
d834a2e9 | 1644 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1645 | windows_or_buffers_changed++; |
29aeee73 RS |
1646 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1647 | ||
d834a2e9 | 1648 | XSETFASTINT (w->height, height); |
265a9e55 | 1649 | if (!NILP (w->hchild)) |
7ab12479 | 1650 | { |
265a9e55 | 1651 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1652 | { |
1653 | XWINDOW (child)->top = w->top; | |
1654 | set_window_height (child, height, nodelete); | |
1655 | } | |
1656 | } | |
265a9e55 | 1657 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1658 | { |
1659 | lastbot = top = XFASTINT (w->top); | |
1660 | lastobot = 0; | |
265a9e55 | 1661 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1662 | { |
1663 | c = XWINDOW (child); | |
1664 | ||
1665 | opos = lastobot + XFASTINT (c->height); | |
1666 | ||
d834a2e9 | 1667 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1668 | |
1669 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1670 | ||
1671 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1672 | set_window_height (child, pos + top - lastbot, 1); | |
1673 | ||
1674 | /* Now advance child to next window, | |
1675 | and set lastbot if child was not just deleted. */ | |
1676 | lastbot = pos + top; | |
1677 | lastobot = opos; | |
1678 | } | |
1679 | /* Now delete any children that became too small. */ | |
1680 | if (!nodelete) | |
265a9e55 | 1681 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1682 | { |
1683 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1684 | } | |
1685 | } | |
1686 | } | |
1687 | ||
1688 | /* Recursively set width of WINDOW and its inferiors. */ | |
1689 | ||
1690 | set_window_width (window, width, nodelete) | |
1691 | Lisp_Object window; | |
1692 | int width; | |
1693 | int nodelete; | |
1694 | { | |
1695 | register struct window *w = XWINDOW (window); | |
1696 | register struct window *c; | |
1697 | int owidth = XFASTINT (w->width); | |
1698 | int left, pos, lastright, opos, lastoright; | |
1699 | Lisp_Object child; | |
1700 | ||
abdced83 | 1701 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 JB |
1702 | { |
1703 | Fdelete_window (window); | |
1704 | return; | |
1705 | } | |
1706 | ||
d834a2e9 | 1707 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1708 | windows_or_buffers_changed++; |
29aeee73 RS |
1709 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1710 | ||
d834a2e9 | 1711 | XSETFASTINT (w->width, width); |
265a9e55 | 1712 | if (!NILP (w->vchild)) |
7ab12479 | 1713 | { |
265a9e55 | 1714 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1715 | { |
1716 | XWINDOW (child)->left = w->left; | |
1717 | set_window_width (child, width, nodelete); | |
1718 | } | |
1719 | } | |
265a9e55 | 1720 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1721 | { |
1722 | lastright = left = XFASTINT (w->left); | |
1723 | lastoright = 0; | |
265a9e55 | 1724 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1725 | { |
1726 | c = XWINDOW (child); | |
1727 | ||
1728 | opos = lastoright + XFASTINT (c->width); | |
1729 | ||
d834a2e9 | 1730 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1731 | |
1732 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1733 | ||
1734 | /* Inhibit deletion for becoming too small */ | |
1735 | set_window_width (child, pos + left - lastright, 1); | |
1736 | ||
1737 | /* Now advance child to next window, | |
1738 | and set lastright if child was not just deleted. */ | |
1739 | lastright = pos + left, lastoright = opos; | |
1740 | } | |
1741 | /* Delete children that became too small */ | |
1742 | if (!nodelete) | |
265a9e55 | 1743 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1744 | { |
1745 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1746 | } | |
1747 | } | |
1748 | } | |
1749 | \f | |
1d8d96fa | 1750 | int window_select_count; |
7ab12479 JB |
1751 | |
1752 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1753 | "Make WINDOW display BUFFER as its contents.\n\ | |
1754 | BUFFER can be a buffer or buffer name.") | |
1755 | (window, buffer) | |
1756 | register Lisp_Object window, buffer; | |
1757 | { | |
1758 | register Lisp_Object tem; | |
1759 | register struct window *w = decode_window (window); | |
1760 | ||
1761 | buffer = Fget_buffer (buffer); | |
1762 | CHECK_BUFFER (buffer, 1); | |
1763 | ||
265a9e55 | 1764 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1765 | error ("Attempt to display deleted buffer"); |
1766 | ||
1767 | tem = w->buffer; | |
265a9e55 | 1768 | if (NILP (tem)) |
7ab12479 JB |
1769 | error ("Window is deleted"); |
1770 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1771 | is first being set up. */ | |
1772 | { | |
265a9e55 | 1773 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1774 | error ("Window is dedicated to `%s'", |
1775 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1776 | |
1777 | unshow_buffer (w); | |
1778 | } | |
1779 | ||
1780 | w->buffer = buffer; | |
d834a2e9 | 1781 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1782 | w->window_end_valid = Qnil; |
d834a2e9 | 1783 | XSETFASTINT(w->hscroll, 0); |
7ab12479 JB |
1784 | Fset_marker (w->pointm, |
1785 | make_number (BUF_PT (XBUFFER (buffer))), | |
1786 | buffer); | |
1787 | set_marker_restricted (w->start, | |
1788 | make_number (XBUFFER (buffer)->last_window_start), | |
1789 | buffer); | |
1790 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1791 | w->force_start = Qnil; |
d834a2e9 | 1792 | XSETFASTINT (w->last_modified, 0); |
7ab12479 JB |
1793 | windows_or_buffers_changed++; |
1794 | if (EQ (window, selected_window)) | |
1795 | Fset_buffer (buffer); | |
1796 | ||
1797 | return Qnil; | |
1798 | } | |
1799 | ||
1800 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1801 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1802 | The main editor command loop selects the buffer of the selected window\n\ | |
1803 | before each command.") | |
1804 | (window) | |
1805 | register Lisp_Object window; | |
1806 | { | |
1807 | register struct window *w; | |
1808 | register struct window *ow = XWINDOW (selected_window); | |
1809 | ||
605be8af | 1810 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1811 | |
1812 | w = XWINDOW (window); | |
1813 | ||
265a9e55 | 1814 | if (NILP (w->buffer)) |
7ab12479 JB |
1815 | error ("Trying to select deleted window or non-leaf window"); |
1816 | ||
d834a2e9 | 1817 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
1818 | if (EQ (window, selected_window)) |
1819 | return window; | |
1820 | ||
1821 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1822 | ow->buffer); | |
1823 | ||
1824 | selected_window = window; | |
44fa5b1e JB |
1825 | #ifdef MULTI_FRAME |
1826 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) | |
7ab12479 | 1827 | { |
44fa5b1e | 1828 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
1829 | /* Use this rather than Fhandle_switch_frame |
1830 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
1831 | move around in the state where a minibuffer in a separate | |
1832 | frame is active. */ | |
1833 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1834 | } |
1835 | else | |
44fa5b1e | 1836 | selected_frame->selected_window = window; |
7ab12479 JB |
1837 | #endif |
1838 | ||
1839 | record_buffer (w->buffer); | |
1840 | Fset_buffer (w->buffer); | |
1841 | ||
1842 | /* Go to the point recorded in the window. | |
1843 | This is important when the buffer is in more | |
1844 | than one window. It also matters when | |
1845 | redisplay_window has altered point after scrolling, | |
1846 | because it makes the change only in the window. */ | |
1847 | { | |
1848 | register int new_point = marker_position (w->pointm); | |
1849 | if (new_point < BEGV) | |
1850 | SET_PT (BEGV); | |
a9c95e08 | 1851 | else if (new_point > ZV) |
7ab12479 JB |
1852 | SET_PT (ZV); |
1853 | else | |
1854 | SET_PT (new_point); | |
1855 | } | |
1856 | ||
1857 | windows_or_buffers_changed++; | |
1858 | return window; | |
1859 | } | |
1860 | ||
35aaf00c | 1861 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
869e65bb | 1862 | "bDisplay buffer: \nP", |
7ab12479 JB |
1863 | "Make BUFFER appear in some window but don't select it.\n\ |
1864 | BUFFER can be a buffer or a buffer name.\n\ | |
1865 | If BUFFER is shown already in some window, just use that one,\n\ | |
1866 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 1867 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 1868 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
7ab12479 JB |
1869 | Returns the window displaying BUFFER.") |
1870 | (buffer, not_this_window) | |
1871 | register Lisp_Object buffer, not_this_window; | |
1872 | { | |
a90712c2 | 1873 | register Lisp_Object window, tem; |
7ab12479 JB |
1874 | |
1875 | buffer = Fget_buffer (buffer); | |
1876 | CHECK_BUFFER (buffer, 0); | |
1877 | ||
265a9e55 | 1878 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1879 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1880 | ||
265a9e55 | 1881 | if (NILP (not_this_window) |
7ab12479 JB |
1882 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1883 | return selected_window; | |
1884 | ||
855d8627 RS |
1885 | /* See if the user has specified this buffer should appear |
1886 | in the selected window. */ | |
1887 | if (NILP (not_this_window)) | |
1888 | { | |
1889 | tem = Fmember (XBUFFER (buffer)->name, Vsame_window_buffer_names); | |
1890 | if (!NILP (tem)) | |
1891 | return Fswitch_to_buffer (buffer, Qnil); | |
1892 | ||
1893 | tem = Fassoc (XBUFFER (buffer)->name, Vsame_window_buffer_names); | |
1894 | if (!NILP (tem)) | |
1895 | return Fswitch_to_buffer (buffer, Qnil); | |
1896 | ||
1897 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCONS (tem)->cdr) | |
1898 | { | |
1899 | Lisp_Object car = XCONS (tem)->car; | |
1900 | if (STRINGP (car) | |
1901 | && fast_string_match (car, XBUFFER (buffer)->name) >= 0) | |
1902 | return Fswitch_to_buffer (buffer, Qnil); | |
1903 | else if (CONSP (car) | |
1904 | && STRINGP (XCONS (car)->car) | |
1905 | && fast_string_match (XCONS (car)->car, | |
1906 | XBUFFER (buffer)->name) >= 0) | |
1907 | return Fswitch_to_buffer (buffer, Qnil); | |
1908 | } | |
1909 | } | |
1910 | ||
c6e73093 | 1911 | #ifdef MULTI_FRAME |
e8edb3ae | 1912 | /* If pop_up_frames, |
f812f9c6 RS |
1913 | look for a window showing BUFFER on any visible or iconified frame. */ |
1914 | window = Fget_buffer_window (buffer, pop_up_frames ? make_number (0) : Qnil); | |
c6e73093 KH |
1915 | #else |
1916 | window = Fget_buffer_window (buffer, Qnil); | |
1917 | #endif | |
265a9e55 JB |
1918 | if (!NILP (window) |
1919 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 1920 | { |
7cab5d2c | 1921 | #ifdef MULTI_FRAME |
f812f9c6 RS |
1922 | if (FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (window))))) |
1923 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7cab5d2c | 1924 | #endif |
f812f9c6 RS |
1925 | return window; |
1926 | } | |
7ab12479 | 1927 | |
a90712c2 RS |
1928 | /* Certain buffer names get special handling. */ |
1929 | if (! NILP (Vspecial_display_function)) | |
1930 | { | |
1931 | tem = Fmember (XBUFFER (buffer)->name, Vspecial_display_buffer_names); | |
1932 | if (!NILP (tem)) | |
1933 | return call1 (Vspecial_display_function, buffer); | |
1934 | ||
0a952b57 RS |
1935 | tem = Fassoc (XBUFFER (buffer)->name, Vspecial_display_buffer_names); |
1936 | if (!NILP (tem)) | |
1937 | return call2 (Vspecial_display_function, buffer, XCONS (tem)->cdr); | |
1938 | ||
a90712c2 | 1939 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCONS (tem)->cdr) |
0a952b57 RS |
1940 | { |
1941 | Lisp_Object car = XCONS (tem)->car; | |
1942 | if (STRINGP (car) | |
1943 | && fast_string_match (car, XBUFFER (buffer)->name) >= 0) | |
1944 | return call1 (Vspecial_display_function, buffer); | |
1945 | else if (CONSP (car) | |
1946 | && STRINGP (XCONS (car)->car) | |
1947 | && fast_string_match (XCONS (car)->car, | |
1948 | XBUFFER (buffer)->name) >= 0) | |
1949 | return call2 (Vspecial_display_function, | |
1950 | buffer, | |
1951 | XCONS (car)->cdr); | |
1952 | } | |
a90712c2 RS |
1953 | } |
1954 | ||
44fa5b1e JB |
1955 | #ifdef MULTI_FRAME |
1956 | /* If there are no frames open that have more than a minibuffer, | |
1957 | we need to create a new frame. */ | |
1958 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 1959 | { |
a90712c2 | 1960 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 1961 | Fset_window_buffer (window, buffer); |
7ab12479 JB |
1962 | return window; |
1963 | } | |
44fa5b1e | 1964 | #endif /* MULTI_FRAME */ |
7ab12479 | 1965 | |
43bad991 | 1966 | if (pop_up_windows |
44fa5b1e JB |
1967 | #ifdef MULTI_FRAME |
1968 | || FRAME_MINIBUF_ONLY_P (selected_frame) | |
cee67da9 RS |
1969 | /* If the current frame is a special display frame, |
1970 | don't try to reuse its windows. */ | |
1971 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 JB |
1972 | #endif |
1973 | ) | |
7ab12479 | 1974 | { |
12cae7c0 KH |
1975 | Lisp_Object frames; |
1976 | ||
1977 | frames = Qnil; | |
44fa5b1e JB |
1978 | #ifdef MULTI_FRAME |
1979 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) | |
74112613 | 1980 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
1981 | #endif |
1982 | /* Don't try to create a window if would get an error */ | |
1983 | if (split_height_threshold < window_min_height << 1) | |
1984 | split_height_threshold = window_min_height << 1; | |
1985 | ||
cee67da9 RS |
1986 | /* Note that both Fget_largest_window and Fget_lru_window |
1987 | ignore minibuffers and dedicated windows. | |
1988 | This means they can return nil. */ | |
7ab12479 | 1989 | |
9f7a8b5d | 1990 | #ifdef MULTI_FRAME |
cee67da9 RS |
1991 | /* If the frame we would try to split cannot be split, |
1992 | try other frames. */ | |
1993 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
1994 | : last_nonminibuf_frame)) | |
1995 | { | |
1996 | /* Try visible frames first. */ | |
1997 | window = Fget_largest_window (Qvisible); | |
1998 | /* If that didn't work, try iconified frames. */ | |
1999 | if (NILP (window)) | |
2000 | window = Fget_largest_window (make_number (0)); | |
2001 | if (NILP (window)) | |
2002 | window = Fget_largest_window (Qt); | |
2003 | } | |
2004 | else | |
9f7a8b5d | 2005 | #endif |
cee67da9 RS |
2006 | window = Fget_largest_window (frames); |
2007 | ||
92cca945 RS |
2008 | /* If we got a tall enough full-width window that can be split, |
2009 | split it. */ | |
265a9e55 | 2010 | if (!NILP (window) |
92cca945 | 2011 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2012 | && window_height (window) >= split_height_threshold |
535e0b8e JB |
2013 | && (XFASTINT (XWINDOW (window)->width) |
2014 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) | |
7ab12479 JB |
2015 | window = Fsplit_window (window, Qnil, Qnil); |
2016 | else | |
2017 | { | |
1942f68f RS |
2018 | Lisp_Object upper, lower, other; |
2019 | ||
44fa5b1e | 2020 | window = Fget_lru_window (frames); |
92cca945 RS |
2021 | /* If the LRU window is selected, and big enough, |
2022 | and can be split, split it. */ | |
cee67da9 | 2023 | if (!NILP (window) |
92cca945 | 2024 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2025 | && (EQ (window, selected_window) |
2026 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2027 | && window_height (window) >= window_min_height << 1) |
2028 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 RS |
2029 | #ifdef MULTI_FRAME |
2030 | /* If Fget_lru_window returned nil, try other approaches. */ | |
2031 | /* Try visible frames first. */ | |
2032 | if (NILP (window)) | |
2033 | window = Fget_largest_window (Qvisible); | |
2034 | /* If that didn't work, try iconified frames. */ | |
2035 | if (NILP (window)) | |
2036 | window = Fget_largest_window (make_number (0)); | |
2037 | /* Try invisible frames. */ | |
2038 | if (NILP (window)) | |
2039 | window = Fget_largest_window (Qt); | |
2040 | /* As a last resort, make a new frame. */ | |
2041 | if (NILP (window)) | |
2042 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
2043 | #else | |
2044 | /* As a last resort, use a non minibuffer window. */ | |
2045 | if (NILP (window)) | |
2046 | window = Fframe_first_window (Fselected_frame ()); | |
2047 | #endif | |
1942f68f RS |
2048 | /* If window appears above or below another, |
2049 | even out their heights. */ | |
2050 | if (!NILP (XWINDOW (window)->prev)) | |
2051 | other = upper = XWINDOW (window)->prev, lower = window; | |
2052 | if (!NILP (XWINDOW (window)->next)) | |
2053 | other = lower = XWINDOW (window)->next, upper = window; | |
2054 | if (!NILP (other) | |
2055 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
2056 | && XWINDOW (other)->top != XWINDOW (window)->top | |
2057 | && XWINDOW (other)->height > XWINDOW (window)->height) | |
2058 | { | |
2059 | int total = XWINDOW (other)->height + XWINDOW (window)->height; | |
8d77c0c8 KH |
2060 | Lisp_Object old_selected_window; |
2061 | old_selected_window = selected_window; | |
1942f68f | 2062 | |
8d77c0c8 | 2063 | selected_window = upper; |
1942f68f RS |
2064 | change_window_height (total / 2 - XWINDOW (upper)->height, 0); |
2065 | selected_window = old_selected_window; | |
2066 | } | |
7ab12479 JB |
2067 | } |
2068 | } | |
2069 | else | |
2070 | window = Fget_lru_window (Qnil); | |
2071 | ||
2072 | Fset_window_buffer (window, buffer); | |
2073 | return window; | |
2074 | } | |
2075 | ||
2076 | void | |
2077 | temp_output_buffer_show (buf) | |
2078 | register Lisp_Object buf; | |
2079 | { | |
2080 | register struct buffer *old = current_buffer; | |
2081 | register Lisp_Object window; | |
2082 | register struct window *w; | |
2083 | ||
2084 | Fset_buffer (buf); | |
c6367666 | 2085 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2086 | BEGV = BEG; |
2087 | ZV = Z; | |
2088 | SET_PT (BEG); | |
2089 | clip_changed = 1; | |
2090 | set_buffer_internal (old); | |
2091 | ||
2092 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2093 | call1 (Vtemp_buffer_show_function, buf); | |
2094 | else | |
2095 | { | |
2096 | window = Fdisplay_buffer (buf, Qnil); | |
2097 | ||
44fa5b1e JB |
2098 | #ifdef MULTI_FRAME |
2099 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) | |
2100 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
2101 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
2102 | Vminibuf_scroll_window = window; |
2103 | w = XWINDOW (window); | |
d834a2e9 | 2104 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
2105 | set_marker_restricted (w->start, make_number (1), buf); |
2106 | set_marker_restricted (w->pointm, make_number (1), buf); | |
2107 | } | |
a58ec57d RS |
2108 | |
2109 | if (!NILP (Vrun_hooks)) | |
2110 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
7ab12479 JB |
2111 | } |
2112 | \f | |
2113 | static | |
2114 | make_dummy_parent (window) | |
2115 | Lisp_Object window; | |
2116 | { | |
cffec418 | 2117 | Lisp_Object new; |
7ab12479 | 2118 | register struct window *o, *p; |
cffec418 KH |
2119 | register struct Lisp_Vector *vec; |
2120 | int i; | |
7ab12479 | 2121 | |
cffec418 KH |
2122 | o = XWINDOW (window); |
2123 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2124 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2125 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2126 | vec->size = VECSIZE (struct window); | |
2127 | p = (struct window *)vec; | |
2128 | XSETWINDOW (new, p); | |
7ab12479 | 2129 | |
d834a2e9 | 2130 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2131 | |
2132 | /* Put new into window structure in place of window */ | |
2133 | replace_window (window, new); | |
2134 | ||
2135 | o->next = Qnil; | |
2136 | o->prev = Qnil; | |
2137 | o->vchild = Qnil; | |
2138 | o->hchild = Qnil; | |
2139 | o->parent = new; | |
2140 | ||
2141 | p->start = Qnil; | |
2142 | p->pointm = Qnil; | |
2143 | p->buffer = Qnil; | |
2144 | } | |
2145 | ||
2146 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2147 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2148 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
2149 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
2150 | and put SIZE columns in the first of the pair.") | |
2151 | (window, chsize, horflag) | |
2152 | Lisp_Object window, chsize, horflag; | |
2153 | { | |
2154 | register Lisp_Object new; | |
2155 | register struct window *o, *p; | |
2156 | register int size; | |
2157 | ||
265a9e55 | 2158 | if (NILP (window)) |
7ab12479 JB |
2159 | window = selected_window; |
2160 | else | |
605be8af | 2161 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2162 | |
2163 | o = XWINDOW (window); | |
2164 | ||
265a9e55 | 2165 | if (NILP (chsize)) |
7ab12479 | 2166 | { |
265a9e55 | 2167 | if (!NILP (horflag)) |
7ab12479 JB |
2168 | /* Round odd size up, since this is for the left-hand window, |
2169 | and it will lose a column for the separators. */ | |
2170 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
2171 | else | |
2172 | size = XFASTINT (o->height) >> 1; | |
2173 | } | |
2174 | else | |
2175 | { | |
2176 | CHECK_NUMBER (chsize, 1); | |
2177 | size = XINT (chsize); | |
2178 | } | |
2179 | ||
2180 | if (MINI_WINDOW_P (o)) | |
2181 | error ("Attempt to split minibuffer window"); | |
44fa5b1e JB |
2182 | else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
2183 | error ("Attempt to split unsplittable frame"); | |
7ab12479 | 2184 | |
a481b3ea | 2185 | check_min_window_sizes (); |
7ab12479 | 2186 | |
265a9e55 | 2187 | if (NILP (horflag)) |
7ab12479 JB |
2188 | { |
2189 | if (size < window_min_height | |
2190 | || size + window_min_height > XFASTINT (o->height)) | |
2191 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
2192 | if (NILP (o->parent) |
2193 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2194 | { |
2195 | make_dummy_parent (window); | |
2196 | new = o->parent; | |
2197 | XWINDOW (new)->vchild = window; | |
2198 | } | |
2199 | } | |
2200 | else | |
2201 | { | |
2202 | if (size < window_min_width | |
2203 | || size + window_min_width > XFASTINT (o->width)) | |
2204 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
2205 | if (NILP (o->parent) |
2206 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2207 | { |
2208 | make_dummy_parent (window); | |
2209 | new = o->parent; | |
2210 | XWINDOW (new)->hchild = window; | |
2211 | } | |
2212 | } | |
2213 | ||
2214 | /* Now we know that window's parent is a vertical combination | |
2215 | if we are dividing vertically, or a horizontal combination | |
2216 | if we are making side-by-side windows */ | |
2217 | ||
2218 | windows_or_buffers_changed++; | |
29aeee73 | 2219 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (o))) = 1; |
7ab12479 JB |
2220 | new = make_window (); |
2221 | p = XWINDOW (new); | |
2222 | ||
44fa5b1e | 2223 | p->frame = o->frame; |
7ab12479 | 2224 | p->next = o->next; |
265a9e55 | 2225 | if (!NILP (p->next)) |
7ab12479 JB |
2226 | XWINDOW (p->next)->prev = new; |
2227 | p->prev = window; | |
2228 | o->next = new; | |
2229 | p->parent = o->parent; | |
2230 | p->buffer = Qt; | |
2231 | ||
2232 | Fset_window_buffer (new, o->buffer); | |
2233 | ||
44fa5b1e | 2234 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2235 | |
265a9e55 | 2236 | if (!NILP (horflag)) |
7ab12479 JB |
2237 | { |
2238 | p->height = o->height; | |
2239 | p->top = o->top; | |
d834a2e9 KH |
2240 | XSETFASTINT (p->width, XFASTINT (o->width) - size); |
2241 | XSETFASTINT (o->width, size); | |
2242 | XSETFASTINT (p->left, XFASTINT (o->left) + size); | |
7ab12479 JB |
2243 | } |
2244 | else | |
2245 | { | |
2246 | p->left = o->left; | |
2247 | p->width = o->width; | |
d834a2e9 KH |
2248 | XSETFASTINT (p->height, XFASTINT (o->height) - size); |
2249 | XSETFASTINT (o->height, size); | |
2250 | XSETFASTINT (p->top, XFASTINT (o->top) + size); | |
7ab12479 JB |
2251 | } |
2252 | ||
2253 | return new; | |
2254 | } | |
2255 | \f | |
2256 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2257 | "Make current window ARG lines bigger.\n\ | |
2258 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
2259 | (n, side) | |
2260 | register Lisp_Object n, side; | |
2261 | { | |
2262 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2263 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
2264 | return Qnil; |
2265 | } | |
2266 | ||
2267 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2268 | "Make current window ARG lines smaller.\n\ | |
2269 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
2270 | (n, side) | |
2271 | register Lisp_Object n, side; | |
2272 | { | |
2273 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2274 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
2275 | return Qnil; |
2276 | } | |
2277 | ||
2278 | int | |
2279 | window_height (window) | |
2280 | Lisp_Object window; | |
2281 | { | |
2282 | register struct window *p = XWINDOW (window); | |
2283 | return XFASTINT (p->height); | |
2284 | } | |
2285 | ||
2286 | int | |
2287 | window_width (window) | |
2288 | Lisp_Object window; | |
2289 | { | |
2290 | register struct window *p = XWINDOW (window); | |
2291 | return XFASTINT (p->width); | |
2292 | } | |
2293 | ||
05c2896a JB |
2294 | #define MINSIZE(w) \ |
2295 | (widthflag \ | |
2296 | ? window_min_width \ | |
2297 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2298 | |
2299 | #define CURBEG(w) \ | |
05c2896a | 2300 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2301 | |
2302 | #define CURSIZE(w) \ | |
05c2896a | 2303 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2304 | |
2305 | /* Unlike set_window_height, this function | |
2306 | also changes the heights of the siblings so as to | |
2307 | keep everything consistent. */ | |
2308 | ||
2309 | change_window_height (delta, widthflag) | |
2310 | register int delta; | |
2311 | int widthflag; | |
2312 | { | |
2313 | register Lisp_Object parent; | |
2314 | Lisp_Object window; | |
2315 | register struct window *p; | |
2316 | int *sizep; | |
2317 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2318 | register int (*setsizefun) () = (widthflag | |
2319 | ? set_window_width | |
2320 | : set_window_height); | |
2321 | ||
a481b3ea | 2322 | check_min_window_sizes (); |
7ab12479 JB |
2323 | |
2324 | window = selected_window; | |
2325 | while (1) | |
2326 | { | |
2327 | p = XWINDOW (window); | |
2328 | parent = p->parent; | |
265a9e55 | 2329 | if (NILP (parent)) |
7ab12479 JB |
2330 | { |
2331 | if (widthflag) | |
2332 | error ("No other window to side of this one"); | |
2333 | break; | |
2334 | } | |
265a9e55 JB |
2335 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2336 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2337 | break; |
2338 | window = parent; | |
2339 | } | |
2340 | ||
05c2896a | 2341 | sizep = &CURSIZE (window); |
7ab12479 | 2342 | |
7ab12479 JB |
2343 | { |
2344 | register int maxdelta; | |
7ab12479 | 2345 | |
265a9e55 JB |
2346 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2347 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2348 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2349 | /* This is a frame with only one window, a minibuffer-only |
2350 | or a minibufferless frame. */ | |
d5783c40 | 2351 | : (delta = 0)); |
7ab12479 JB |
2352 | |
2353 | if (delta > maxdelta) | |
2354 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2355 | the full frame, or make the only window aside from the |
2356 | minibuffer the full frame. */ | |
7ab12479 | 2357 | delta = maxdelta; |
6b54027b | 2358 | } |
d5783c40 | 2359 | |
6b54027b RS |
2360 | if (*sizep + delta < MINSIZE (window)) |
2361 | { | |
2362 | Fdelete_window (window); | |
d5783c40 | 2363 | return; |
6b54027b RS |
2364 | } |
2365 | ||
2366 | if (delta == 0) | |
2367 | return; | |
7ab12479 | 2368 | |
6b54027b RS |
2369 | if (!NILP (p->next) |
2370 | && (*sizefun) (p->next) - delta >= MINSIZE (p->next)) | |
7ab12479 JB |
2371 | { |
2372 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
2373 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 2374 | CURBEG (p->next) += delta; |
7ab12479 JB |
2375 | /* This does not change size of p->next, |
2376 | but it propagates the new top edge to its children */ | |
2377 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
2378 | } | |
6b54027b RS |
2379 | else if (!NILP (p->prev) |
2380 | && (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) | |
7ab12479 JB |
2381 | { |
2382 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 2383 | CURBEG (window) -= delta; |
7ab12479 JB |
2384 | (*setsizefun) (window, *sizep + delta, 0); |
2385 | } | |
2386 | else | |
2387 | { | |
2388 | register int delta1; | |
2389 | register int opht = (*sizefun) (parent); | |
2390 | ||
2391 | /* If trying to grow this window to or beyond size of the parent, | |
2392 | make delta1 so big that, on shrinking back down, | |
2393 | all the siblings end up with less than one line and are deleted. */ | |
2394 | if (opht <= *sizep + delta) | |
2395 | delta1 = opht * opht * 2; | |
2396 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2397 | lines to this window and to the parent, and then shrink | |
2398 | the parent back to its original size, the new proportional | |
2399 | size of this window will increase by delta. */ | |
2400 | else | |
2401 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2402 | ||
2403 | /* Add delta1 lines or columns to this window, and to the parent, | |
2404 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2405 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2406 | (*setsizefun) (window, *sizep + delta1, 0); |
2407 | ||
2408 | /* Squeeze out delta1 lines or columns from our parent, | |
2409 | shriking this window and siblings proportionately. | |
2410 | This brings parent back to correct size. | |
2411 | Delta1 was calculated so this makes this window the desired size, | |
2412 | taking it all out of the siblings. */ | |
2413 | (*setsizefun) (parent, opht, 0); | |
2414 | } | |
2415 | ||
d834a2e9 | 2416 | XSETFASTINT (p->last_modified, 0); |
7ab12479 JB |
2417 | } |
2418 | #undef MINSIZE | |
2419 | #undef CURBEG | |
2420 | #undef CURSIZE | |
2421 | ||
2422 | \f | |
2423 | /* Return number of lines of text (not counting mode line) in W. */ | |
2424 | ||
2425 | int | |
2426 | window_internal_height (w) | |
2427 | struct window *w; | |
2428 | { | |
2429 | int ht = XFASTINT (w->height); | |
2430 | ||
2431 | if (MINI_WINDOW_P (w)) | |
2432 | return ht; | |
2433 | ||
265a9e55 JB |
2434 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2435 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2436 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2437 | return ht - 1; |
2438 | ||
2439 | return ht; | |
2440 | } | |
2441 | ||
535e0b8e JB |
2442 | |
2443 | /* Return the number of columns in W. | |
a3c87d4e | 2444 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2445 | separating W from the sibling to its right. */ |
2446 | int | |
2447 | window_internal_width (w) | |
2448 | struct window *w; | |
2449 | { | |
2450 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
2451 | int left = XINT (w->left); | |
2452 | int width = XINT (w->width); | |
2453 | ||
2454 | /* If this window is flush against the right edge of the frame, its | |
2455 | internal width is its full width. */ | |
2456 | if (left + width >= FRAME_WIDTH (f)) | |
2457 | return width; | |
2458 | ||
2459 | /* If we are not flush right, then our rightmost columns are | |
2460 | occupied by some sort of separator. */ | |
2461 | ||
a3c87d4e JB |
2462 | /* Scroll bars occupy a few columns. */ |
2463 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2464 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2465 | |
2466 | /* The column of `|' characters separating side-by-side windows | |
2467 | occupies one column only. */ | |
2468 | return width - 1; | |
2469 | } | |
2470 | ||
2471 | ||
7ab12479 JB |
2472 | /* Scroll contents of window WINDOW up N lines. */ |
2473 | ||
2474 | void | |
f8026fd8 | 2475 | window_scroll (window, n, noerror) |
7ab12479 JB |
2476 | Lisp_Object window; |
2477 | int n; | |
f8026fd8 | 2478 | int noerror; |
7ab12479 JB |
2479 | { |
2480 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2481 | register int opoint = PT; |
7ab12479 JB |
2482 | register int pos; |
2483 | register int ht = window_internal_height (w); | |
2484 | register Lisp_Object tem; | |
2485 | int lose; | |
2486 | Lisp_Object bolp, nmoved; | |
2487 | ||
d834a2e9 | 2488 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2489 | tem = Fpos_visible_in_window_p (tem, window); |
2490 | ||
265a9e55 | 2491 | if (NILP (tem)) |
7ab12479 | 2492 | { |
cd2be1dd | 2493 | Fvertical_motion (make_number (- (ht / 2)), window); |
d834a2e9 | 2494 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2495 | Fset_marker (w->start, tem, w->buffer); |
2496 | w->force_start = Qt; | |
2497 | } | |
2498 | ||
2499 | SET_PT (marker_position (w->start)); | |
5ce7b543 | 2500 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2501 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2502 | pos = PT; |
7ab12479 JB |
2503 | bolp = Fbolp (); |
2504 | SET_PT (opoint); | |
2505 | ||
2506 | if (lose) | |
f8026fd8 JB |
2507 | { |
2508 | if (noerror) | |
2509 | return; | |
2510 | else | |
2511 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2512 | } | |
7ab12479 JB |
2513 | |
2514 | if (pos < ZV) | |
7ab12479 JB |
2515 | { |
2516 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2517 | w->start_at_line_beg = bolp; | |
2518 | w->update_mode_line = Qt; | |
d834a2e9 | 2519 | XSETFASTINT (w->last_modified, 0); |
7ab12479 JB |
2520 | if (pos > opoint) |
2521 | SET_PT (pos); | |
2522 | if (n < 0) | |
2523 | { | |
2524 | SET_PT (pos); | |
540b6aa0 | 2525 | tem = Fvertical_motion (make_number (ht), window); |
5ce7b543 | 2526 | if (PT > opoint || XFASTINT (tem) < ht) |
7ab12479 JB |
2527 | SET_PT (opoint); |
2528 | else | |
540b6aa0 | 2529 | Fvertical_motion (make_number (-1), window); |
7ab12479 JB |
2530 | } |
2531 | } | |
2532 | else | |
f8026fd8 JB |
2533 | { |
2534 | if (noerror) | |
2535 | return; | |
2536 | else | |
2537 | Fsignal (Qend_of_buffer, Qnil); | |
2538 | } | |
7ab12479 JB |
2539 | } |
2540 | \f | |
2541 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2542 | ||
2543 | static void | |
2544 | scroll_command (n, direction) | |
2545 | register Lisp_Object n; | |
2546 | int direction; | |
2547 | { | |
2548 | register int defalt; | |
2549 | int count = specpdl_ptr - specpdl; | |
2550 | ||
95605e15 JB |
2551 | /* If selected window's buffer isn't current, make it current for the moment. |
2552 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2553 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2554 | { |
2555 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2556 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2557 | } | |
7ab12479 JB |
2558 | |
2559 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2560 | - next_screen_context_lines); | |
2561 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2562 | ||
265a9e55 | 2563 | if (NILP (n)) |
f8026fd8 | 2564 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2565 | else if (EQ (n, Qminus)) |
f8026fd8 | 2566 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2567 | else |
2568 | { | |
2569 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2570 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2571 | } |
95605e15 JB |
2572 | |
2573 | unbind_to (count, Qnil); | |
7ab12479 JB |
2574 | } |
2575 | ||
2576 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2577 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2578 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2579 | Negative ARG means scroll downward.\n\ |
7ab12479 JB |
2580 | When calling from a program, supply a number as argument or nil.") |
2581 | (n) | |
2582 | Lisp_Object n; | |
2583 | { | |
2584 | scroll_command (n, 1); | |
2585 | return Qnil; | |
2586 | } | |
2587 | ||
2588 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2589 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2590 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2591 | Negative ARG means scroll upward.\n\ |
7ab12479 JB |
2592 | When calling from a program, supply a number as argument or nil.") |
2593 | (n) | |
2594 | Lisp_Object n; | |
2595 | { | |
2596 | scroll_command (n, -1); | |
2597 | return Qnil; | |
2598 | } | |
ccd0664b RS |
2599 | \f |
2600 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
2601 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 2602 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
2603 | specifies the window.\n\ |
2604 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
2605 | showing that buffer is used.") | |
eb16ec06 | 2606 | () |
7ab12479 | 2607 | { |
ccd0664b | 2608 | Lisp_Object window; |
7ab12479 JB |
2609 | |
2610 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2611 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2612 | window = Vminibuf_scroll_window; |
2613 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2614 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2615 | { |
2616 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2617 | if (NILP (window)) |
7ab12479 JB |
2618 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2619 | } | |
2620 | else | |
dbc4e1c1 JB |
2621 | { |
2622 | /* Nothing specified; look for a neighboring window on the same | |
2623 | frame. */ | |
2624 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2625 | ||
2626 | if (EQ (window, selected_window)) | |
2627 | /* That didn't get us anywhere; look for a window on another | |
2628 | visible frame. */ | |
2629 | do | |
2630 | window = Fnext_window (window, Qnil, Qt); | |
2631 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2632 | && ! EQ (window, selected_window)); | |
2633 | } | |
2634 | ||
605be8af | 2635 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2636 | |
2637 | if (EQ (window, selected_window)) | |
2638 | error ("There is no other window"); | |
2639 | ||
ccd0664b RS |
2640 | return window; |
2641 | } | |
2642 | ||
2643 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2644 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
2645 | The next window is the one below the current one; or the one at the top\n\ | |
2646 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
2647 | When calling from a program, supply a number as argument or nil.\n\ | |
2648 | \n\ | |
2649 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
2650 | specifies the window to scroll.\n\ | |
2651 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2652 | showing that buffer, popping the buffer up if necessary.") | |
2653 | (n) | |
2654 | register Lisp_Object n; | |
2655 | { | |
2656 | register Lisp_Object window; | |
2f787aa3 | 2657 | register int defalt; |
ccd0664b RS |
2658 | register struct window *w; |
2659 | register int count = specpdl_ptr - specpdl; | |
2660 | ||
2661 | window = Fother_window_for_scrolling (); | |
2662 | ||
7ab12479 | 2663 | w = XWINDOW (window); |
2f787aa3 KH |
2664 | defalt = window_internal_height (w) - next_screen_context_lines; |
2665 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
2666 | |
2667 | /* Don't screw up if window_scroll gets an error. */ | |
2668 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2669 | ||
2670 | Fset_buffer (w->buffer); | |
2671 | SET_PT (marker_position (w->pointm)); | |
2672 | ||
265a9e55 | 2673 | if (NILP (n)) |
2f787aa3 | 2674 | window_scroll (window, defalt, 1); |
7ab12479 | 2675 | else if (EQ (n, Qminus)) |
2f787aa3 | 2676 | window_scroll (window, -defalt, 1); |
7ab12479 JB |
2677 | else |
2678 | { | |
017b2bad | 2679 | if (CONSP (n)) |
7ab12479 JB |
2680 | n = Fcar (n); |
2681 | CHECK_NUMBER (n, 0); | |
f8026fd8 | 2682 | window_scroll (window, XINT (n), 1); |
7ab12479 JB |
2683 | } |
2684 | ||
5ce7b543 | 2685 | Fset_marker (w->pointm, make_number (PT), Qnil); |
f4e7b2c2 | 2686 | unbind_to (count, Qnil); |
7ab12479 JB |
2687 | |
2688 | return Qnil; | |
2689 | } | |
2690 | \f | |
644b477c | 2691 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
2692 | "Scroll selected window display ARG columns left.\n\ |
2693 | Default for ARG is window width minus 2.") | |
2694 | (arg) | |
2695 | register Lisp_Object arg; | |
2696 | { | |
2697 | ||
265a9e55 | 2698 | if (NILP (arg)) |
d834a2e9 | 2699 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2700 | else |
2701 | arg = Fprefix_numeric_value (arg); | |
2702 | ||
2703 | return | |
2704 | Fset_window_hscroll (selected_window, | |
2705 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2706 | + XINT (arg))); | |
2707 | } | |
2708 | ||
644b477c | 2709 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
2710 | "Scroll selected window display ARG columns right.\n\ |
2711 | Default for ARG is window width minus 2.") | |
2712 | (arg) | |
2713 | register Lisp_Object arg; | |
2714 | { | |
265a9e55 | 2715 | if (NILP (arg)) |
d834a2e9 | 2716 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2717 | else |
2718 | arg = Fprefix_numeric_value (arg); | |
2719 | ||
2720 | return | |
2721 | Fset_window_hscroll (selected_window, | |
2722 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2723 | - XINT (arg))); | |
2724 | } | |
2725 | ||
2726 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2727 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2728 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e JB |
2729 | Just C-u as prefix means put point in the center of the window.\n\ |
2730 | No arg (i.e., it is nil) erases the entire frame and then\n\ | |
2731 | redraws with point in the center of the current window.") | |
7ab12479 JB |
2732 | (n) |
2733 | register Lisp_Object n; | |
2734 | { | |
2735 | register struct window *w = XWINDOW (selected_window); | |
2736 | register int ht = window_internal_height (w); | |
113d9015 | 2737 | struct position pos; |
540b6aa0 | 2738 | Lisp_Object window; |
7ab12479 | 2739 | |
265a9e55 | 2740 | if (NILP (n)) |
7ab12479 | 2741 | { |
44fa5b1e | 2742 | extern int frame_garbaged; |
7ab12479 | 2743 | |
44fa5b1e | 2744 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
d834a2e9 | 2745 | XSETFASTINT (n, ht / 2); |
7ab12479 | 2746 | } |
017b2bad | 2747 | else if (CONSP (n)) /* Just C-u. */ |
7ab12479 | 2748 | { |
d834a2e9 | 2749 | XSETFASTINT (n, ht / 2); |
7ab12479 JB |
2750 | } |
2751 | else | |
2752 | { | |
2753 | n = Fprefix_numeric_value (n); | |
2754 | CHECK_NUMBER (n, 0); | |
2755 | } | |
2756 | ||
2757 | if (XINT (n) < 0) | |
2758 | XSETINT (n, XINT (n) + ht); | |
2759 | ||
74112613 | 2760 | XSETWINDOW (window, w); |
113d9015 KH |
2761 | pos = *vmotion (point, - XINT (n), window_internal_width (w) - 1, |
2762 | XINT (w->hscroll), window); | |
7ab12479 | 2763 | |
113d9015 KH |
2764 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
2765 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
2766 | || FETCH_CHAR (pos.bufpos - 1) == '\n') | |
2767 | ? Qt : Qnil); | |
7ab12479 JB |
2768 | w->force_start = Qt; |
2769 | ||
2770 | return Qnil; | |
2771 | } | |
2772 | \f | |
2773 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2774 | 1, 1, "P", | |
2775 | "Position point relative to window.\n\ | |
19e3bf0a | 2776 | With no argument, position point at center of window.\n\ |
44fa5b1e | 2777 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2778 | negative means relative to bottom of window.") |
2779 | (arg) | |
2780 | register Lisp_Object arg; | |
2781 | { | |
2782 | register struct window *w = XWINDOW (selected_window); | |
2783 | register int height = window_internal_height (w); | |
2784 | register int start; | |
540b6aa0 | 2785 | Lisp_Object window; |
7ab12479 | 2786 | |
265a9e55 | 2787 | if (NILP (arg)) |
d834a2e9 | 2788 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
2789 | else |
2790 | { | |
2791 | arg = Fprefix_numeric_value (arg); | |
2792 | if (XINT (arg) < 0) | |
2793 | XSETINT (arg, XINT (arg) + height); | |
2794 | } | |
2795 | ||
2796 | start = marker_position (w->start); | |
74112613 | 2797 | XSETWINDOW (window, w); |
7ab12479 JB |
2798 | if (start < BEGV || start > ZV) |
2799 | { | |
cd2be1dd | 2800 | Fvertical_motion (make_number (- (height / 2)), window); |
5ce7b543 | 2801 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
2802 | w->start_at_line_beg = Fbolp (); |
2803 | w->force_start = Qt; | |
2804 | } | |
2805 | else | |
2806 | SET_PT (start); | |
2807 | ||
540b6aa0 | 2808 | return Fvertical_motion (arg, window); |
7ab12479 JB |
2809 | } |
2810 | \f | |
2811 | struct save_window_data | |
2812 | { | |
2813 | int size_from_Lisp_Vector_struct; | |
2814 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
8f6ea2e9 | 2815 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 2816 | Lisp_Object selected_frame; |
7ab12479 JB |
2817 | Lisp_Object current_window; |
2818 | Lisp_Object current_buffer; | |
2819 | Lisp_Object minibuf_scroll_window; | |
2820 | Lisp_Object root_window; | |
bdc727bf | 2821 | Lisp_Object focus_frame; |
756b6edc RS |
2822 | /* Record the values of window-min-width and window-min-height |
2823 | so that window sizes remain consistent with them. */ | |
2824 | Lisp_Object min_width, min_height; | |
7ab12479 JB |
2825 | /* A vector, interpreted as a struct saved_window */ |
2826 | Lisp_Object saved_windows; | |
2827 | }; | |
ff06df24 | 2828 | |
7ab12479 JB |
2829 | /* This is saved as a Lisp_Vector */ |
2830 | struct saved_window | |
2831 | { | |
2832 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2833 | int size_from_Lisp_Vector_struct; | |
2834 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2835 | ||
2836 | Lisp_Object window; | |
2837 | Lisp_Object buffer, start, pointm, mark; | |
2838 | Lisp_Object left, top, width, height, hscroll; | |
2839 | Lisp_Object parent, prev; | |
2840 | Lisp_Object start_at_line_beg; | |
2841 | Lisp_Object display_table; | |
2842 | }; | |
2843 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2844 | ||
2845 | #define SAVED_WINDOW_N(swv,n) \ | |
2846 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2847 | ||
2848 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2849 | "T if OBJECT is a window-configration object.") | |
2850 | (obj) | |
2851 | Lisp_Object obj; | |
2852 | { | |
017b2bad | 2853 | if (WINDOW_CONFIGURATIONP (obj)) |
7ab12479 JB |
2854 | return Qt; |
2855 | return Qnil; | |
2856 | } | |
2857 | ||
2858 | ||
d5b2799e RS |
2859 | DEFUN ("set-window-configuration", Fset_window_configuration, |
2860 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
2861 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
2862 | CONFIGURATION must be a value previously returned\n\ | |
2863 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
2864 | (configuration) |
2865 | Lisp_Object configuration; | |
7ab12479 | 2866 | { |
7ab12479 JB |
2867 | register struct save_window_data *data; |
2868 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 2869 | Lisp_Object new_current_buffer; |
fd482be5 | 2870 | Lisp_Object frame; |
44fa5b1e | 2871 | FRAME_PTR f; |
7ab12479 | 2872 | |
017b2bad | 2873 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 2874 | { |
2f83aebe JB |
2875 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
2876 | configuration); | |
7ab12479 JB |
2877 | } |
2878 | ||
2f83aebe | 2879 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
2880 | saved_windows = XVECTOR (data->saved_windows); |
2881 | ||
7ab12479 | 2882 | new_current_buffer = data->current_buffer; |
265a9e55 | 2883 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2884 | new_current_buffer = Qnil; |
2885 | ||
fd482be5 JB |
2886 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
2887 | f = XFRAME (frame); | |
9ace597f | 2888 | |
fd482be5 JB |
2889 | /* If f is a dead frame, don't bother rebuilding its window tree. |
2890 | However, there is other stuff we should still try to do below. */ | |
2891 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 2892 | { |
fd482be5 JB |
2893 | register struct window *w; |
2894 | register struct saved_window *p; | |
2895 | int k; | |
2896 | ||
2897 | /* If the frame has been resized since this window configuration was | |
2898 | made, we change the frame to the size specified in the | |
2899 | configuration, restore the configuration, and then resize it | |
2900 | back. We keep track of the prevailing height in these variables. */ | |
2901 | int previous_frame_height = FRAME_HEIGHT (f); | |
2902 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 2903 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
2904 | |
2905 | if (XFASTINT (data->frame_height) != previous_frame_height | |
2906 | || XFASTINT (data->frame_width) != previous_frame_width) | |
2907 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
217f2871 | 2908 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
2909 | if (XFASTINT (data->frame_menu_bar_lines) |
2910 | != previous_frame_menu_bar_lines) | |
2911 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
217f2871 | 2912 | #endif |
fd482be5 JB |
2913 | |
2914 | windows_or_buffers_changed++; | |
29aeee73 | 2915 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 2916 | |
756b6edc RS |
2917 | /* Temporarily avoid any problems with windows that are smaller |
2918 | than they are supposed to be. */ | |
2919 | window_min_height = 1; | |
2920 | window_min_width = 1; | |
2921 | ||
fd482be5 JB |
2922 | /* Kludge Alert! |
2923 | Mark all windows now on frame as "deleted". | |
2924 | Restoring the new configuration "undeletes" any that are in it. | |
2925 | ||
2926 | Save their current buffers in their height fields, since we may | |
2927 | need it later, if a buffer saved in the configuration is now | |
2928 | dead. */ | |
2929 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
2930 | ||
2931 | for (k = 0; k < saved_windows->size; k++) | |
2932 | { | |
2933 | p = SAVED_WINDOW_N (saved_windows, k); | |
2934 | w = XWINDOW (p->window); | |
2935 | w->next = Qnil; | |
7ab12479 | 2936 | |
fd482be5 JB |
2937 | if (!NILP (p->parent)) |
2938 | w->parent = SAVED_WINDOW_N (saved_windows, | |
2939 | XFASTINT (p->parent))->window; | |
2940 | else | |
2941 | w->parent = Qnil; | |
7ab12479 | 2942 | |
fd482be5 | 2943 | if (!NILP (p->prev)) |
7ab12479 | 2944 | { |
fd482be5 JB |
2945 | w->prev = SAVED_WINDOW_N (saved_windows, |
2946 | XFASTINT (p->prev))->window; | |
2947 | XWINDOW (w->prev)->next = p->window; | |
2948 | } | |
2949 | else | |
2950 | { | |
2951 | w->prev = Qnil; | |
2952 | if (!NILP (w->parent)) | |
2953 | { | |
2954 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
2955 | { | |
2956 | XWINDOW (w->parent)->vchild = p->window; | |
2957 | XWINDOW (w->parent)->hchild = Qnil; | |
2958 | } | |
2959 | else | |
2960 | { | |
2961 | XWINDOW (w->parent)->hchild = p->window; | |
2962 | XWINDOW (w->parent)->vchild = Qnil; | |
2963 | } | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | /* If we squirreled away the buffer in the window's height, | |
2968 | restore it now. */ | |
017b2bad | 2969 | if (BUFFERP (w->height)) |
fd482be5 JB |
2970 | w->buffer = w->height; |
2971 | w->left = p->left; | |
2972 | w->top = p->top; | |
2973 | w->width = p->width; | |
2974 | w->height = p->height; | |
2975 | w->hscroll = p->hscroll; | |
2976 | w->display_table = p->display_table; | |
d834a2e9 | 2977 | XSETFASTINT (w->last_modified, 0); |
fd482be5 JB |
2978 | |
2979 | /* Reinstall the saved buffer and pointers into it. */ | |
2980 | if (NILP (p->buffer)) | |
2981 | w->buffer = p->buffer; | |
2982 | else | |
2983 | { | |
2984 | if (!NILP (XBUFFER (p->buffer)->name)) | |
2985 | /* If saved buffer is alive, install it. */ | |
2986 | { | |
2987 | w->buffer = p->buffer; | |
2988 | w->start_at_line_beg = p->start_at_line_beg; | |
2989 | set_marker_restricted (w->start, | |
2990 | Fmarker_position (p->start), | |
2991 | w->buffer); | |
2992 | set_marker_restricted (w->pointm, | |
2993 | Fmarker_position (p->pointm), | |
2994 | w->buffer); | |
2995 | Fset_marker (XBUFFER (w->buffer)->mark, | |
2996 | Fmarker_position (p->mark), w->buffer); | |
2997 | ||
2998 | /* As documented in Fcurrent_window_configuration, don't | |
2999 | save the location of point in the buffer which was current | |
3000 | when the window configuration was recorded. */ | |
6b54027b RS |
3001 | if (!EQ (p->buffer, new_current_buffer) |
3002 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
3003 | Fgoto_char (w->pointm); |
3004 | } | |
52a68e98 RS |
3005 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
3006 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 3007 | { |
fd482be5 JB |
3008 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
3009 | /* This will set the markers to beginning of visible | |
3010 | range. */ | |
3011 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
3012 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
3013 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3014 | } |
3015 | else | |
fd482be5 | 3016 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 3017 | are real. */ |
7ab12479 | 3018 | { |
fd482be5 JB |
3019 | /* Set window markers at start of visible range. */ |
3020 | if (XMARKER (w->start)->buffer == 0) | |
3021 | set_marker_restricted (w->start, make_number (0), | |
3022 | w->buffer); | |
3023 | if (XMARKER (w->pointm)->buffer == 0) | |
3024 | set_marker_restricted (w->pointm, | |
3025 | (make_number | |
3026 | (BUF_PT (XBUFFER (w->buffer)))), | |
3027 | w->buffer); | |
3028 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3029 | } |
3030 | } | |
3031 | } | |
9ace597f | 3032 | |
fd482be5 JB |
3033 | FRAME_ROOT_WINDOW (f) = data->root_window; |
3034 | Fselect_window (data->current_window); | |
7ab12479 | 3035 | |
fd482be5 | 3036 | #ifdef MULTI_FRAME |
db269683 | 3037 | if (NILP (data->focus_frame) |
017b2bad | 3038 | || (FRAMEP (data->focus_frame) |
db269683 JB |
3039 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
3040 | Fredirect_frame_focus (frame, data->focus_frame); | |
fd482be5 | 3041 | #endif |
7ab12479 | 3042 | |
fd482be5 JB |
3043 | #if 0 /* I don't understand why this is needed, and it causes problems |
3044 | when the frame's old selected window has been deleted. */ | |
3045 | #ifdef MULTI_FRAME | |
3046 | if (f != selected_frame && ! FRAME_TERMCAP_P (f)) | |
d5b2799e | 3047 | Fhandle_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), Qnil); |
fd482be5 JB |
3048 | #endif |
3049 | #endif | |
3050 | ||
3051 | /* Set the screen height to the value it had before this function. */ | |
3052 | if (previous_frame_height != FRAME_HEIGHT (f) | |
3053 | || previous_frame_width != FRAME_WIDTH (f)) | |
3054 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
3055 | 0, 0); | |
217f2871 | 3056 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
3057 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
3058 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
217f2871 | 3059 | #endif |
fd482be5 | 3060 | } |
bdc727bf | 3061 | |
756b6edc RS |
3062 | /* Restore the minimum heights recorded in the configuration. */ |
3063 | window_min_height = XINT (data->min_height); | |
3064 | window_min_width = XINT (data->min_width); | |
3065 | ||
ad854249 | 3066 | #ifdef MULTI_FRAME |
bdc727bf | 3067 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 3068 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
3069 | selected window too, but that doesn't make the call to |
3070 | Fselect_window above totally superfluous; it still sets f's | |
3071 | selected window. */ | |
fd482be5 | 3072 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
d5b2799e | 3073 | Fhandle_switch_frame (data->selected_frame, Qnil); |
ad854249 | 3074 | #endif |
bdc727bf JB |
3075 | |
3076 | if (!NILP (new_current_buffer)) | |
3077 | Fset_buffer (new_current_buffer); | |
3078 | ||
7ab12479 JB |
3079 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3080 | return (Qnil); | |
3081 | } | |
3082 | ||
44fa5b1e | 3083 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3084 | by setting their buffers to nil. */ |
3085 | ||
fd482be5 | 3086 | void |
7ab12479 JB |
3087 | delete_all_subwindows (w) |
3088 | register struct window *w; | |
3089 | { | |
265a9e55 | 3090 | if (!NILP (w->next)) |
7ab12479 | 3091 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3092 | if (!NILP (w->vchild)) |
7ab12479 | 3093 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3094 | if (!NILP (w->hchild)) |
7ab12479 | 3095 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3096 | |
3097 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3098 | ||
3099 | /* We set all three of these fields to nil, to make sure that we can | |
3100 | distinguish this dead window from any live window. Live leaf | |
3101 | windows will have buffer set, and combination windows will have | |
3102 | vchild or hchild set. */ | |
3103 | w->buffer = Qnil; | |
3104 | w->vchild = Qnil; | |
3105 | w->hchild = Qnil; | |
7ab12479 JB |
3106 | } |
3107 | \f | |
3108 | static int | |
3109 | count_windows (window) | |
3110 | register struct window *window; | |
3111 | { | |
3112 | register int count = 1; | |
265a9e55 | 3113 | if (!NILP (window->next)) |
7ab12479 | 3114 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3115 | if (!NILP (window->vchild)) |
7ab12479 | 3116 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3117 | if (!NILP (window->hchild)) |
7ab12479 JB |
3118 | count += count_windows (XWINDOW (window->hchild)); |
3119 | return count; | |
3120 | } | |
3121 | ||
3122 | static int | |
3123 | save_window_save (window, vector, i) | |
3124 | Lisp_Object window; | |
3125 | struct Lisp_Vector *vector; | |
3126 | int i; | |
3127 | { | |
3128 | register struct saved_window *p; | |
3129 | register struct window *w; | |
3130 | register Lisp_Object tem; | |
3131 | ||
265a9e55 | 3132 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3133 | { |
3134 | p = SAVED_WINDOW_N (vector, i); | |
3135 | w = XWINDOW (window); | |
3136 | ||
d834a2e9 | 3137 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3138 | p->window = window; |
3139 | p->buffer = w->buffer; | |
3140 | p->left = w->left; | |
3141 | p->top = w->top; | |
3142 | p->width = w->width; | |
3143 | p->height = w->height; | |
3144 | p->hscroll = w->hscroll; | |
3145 | p->display_table = w->display_table; | |
265a9e55 | 3146 | if (!NILP (w->buffer)) |
7ab12479 JB |
3147 | { |
3148 | /* Save w's value of point in the window configuration. | |
3149 | If w is the selected window, then get the value of point | |
3150 | from the buffer; pointm is garbage in the selected window. */ | |
3151 | if (EQ (window, selected_window)) | |
3152 | { | |
3153 | p->pointm = Fmake_marker (); | |
3154 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
3155 | w->buffer); | |
3156 | } | |
3157 | else | |
3158 | p->pointm = Fcopy_marker (w->pointm); | |
3159 | ||
3160 | p->start = Fcopy_marker (w->start); | |
3161 | p->start_at_line_beg = w->start_at_line_beg; | |
3162 | ||
3163 | tem = XBUFFER (w->buffer)->mark; | |
3164 | p->mark = Fcopy_marker (tem); | |
3165 | } | |
3166 | else | |
3167 | { | |
3168 | p->pointm = Qnil; | |
3169 | p->start = Qnil; | |
3170 | p->mark = Qnil; | |
3171 | p->start_at_line_beg = Qnil; | |
3172 | } | |
3173 | ||
265a9e55 | 3174 | if (NILP (w->parent)) |
7ab12479 JB |
3175 | p->parent = Qnil; |
3176 | else | |
3177 | p->parent = XWINDOW (w->parent)->temslot; | |
3178 | ||
265a9e55 | 3179 | if (NILP (w->prev)) |
7ab12479 JB |
3180 | p->prev = Qnil; |
3181 | else | |
3182 | p->prev = XWINDOW (w->prev)->temslot; | |
3183 | ||
265a9e55 | 3184 | if (!NILP (w->vchild)) |
7ab12479 | 3185 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3186 | if (!NILP (w->hchild)) |
7ab12479 JB |
3187 | i = save_window_save (w->hchild, vector, i); |
3188 | } | |
3189 | ||
3190 | return i; | |
3191 | } | |
3192 | ||
3193 | DEFUN ("current-window-configuration", | |
43bad991 | 3194 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
3195 | "Return an object representing the current window configuration of FRAME.\n\ |
3196 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3197 | This describes the number of windows, their sizes and current buffers,\n\ |
3198 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3199 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3200 | its value is -not- saved.\n\ |
3201 | This also records the currently selected frame, and FRAME's focus\n\ | |
3202 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3203 | (frame) |
3204 | Lisp_Object frame; | |
7ab12479 JB |
3205 | { |
3206 | register Lisp_Object tem; | |
3207 | register int n_windows; | |
3208 | register struct save_window_data *data; | |
da2792e0 | 3209 | register struct Lisp_Vector *vec; |
7ab12479 | 3210 | register int i; |
44fa5b1e | 3211 | FRAME_PTR f; |
43bad991 | 3212 | |
44fa5b1e JB |
3213 | if (NILP (frame)) |
3214 | f = selected_frame; | |
43bad991 JB |
3215 | else |
3216 | { | |
44fa5b1e JB |
3217 | CHECK_LIVE_FRAME (frame, 0); |
3218 | f = XFRAME (frame); | |
43bad991 | 3219 | } |
7ab12479 | 3220 | |
44fa5b1e | 3221 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3222 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3223 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3224 | vec->contents[i] = Qnil; | |
3225 | vec->size = VECSIZE (struct save_window_data); | |
3226 | data = (struct save_window_data *)vec; | |
3227 | ||
d834a2e9 KH |
3228 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3229 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3230 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
ad854249 | 3231 | #ifdef MULTI_FRAME |
74112613 | 3232 | XSETFRAME (data->selected_frame, selected_frame); |
ad854249 | 3233 | #endif |
44fa5b1e | 3234 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3235 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3236 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3237 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3238 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3239 | XSETINT (data->min_height, window_min_height); |
3240 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3241 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3242 | data->saved_windows = tem; | |
3243 | for (i = 0; i < n_windows; i++) | |
3244 | XVECTOR (tem)->contents[i] | |
3245 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3246 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3247 | XVECTOR (tem), 0); |
74112613 | 3248 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3249 | return (tem); |
3250 | } | |
3251 | ||
3252 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3253 | 0, UNEVALLED, 0, | |
3254 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3255 | Restore which buffer appears in which window, where display starts,\n\ |
3256 | and the value of point and mark for each window.\n\ | |
3257 | Also restore which buffer is current.\n\ | |
3258 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3259 | Does not restore the value of point in current buffer.") |
3260 | (args) | |
3261 | Lisp_Object args; | |
3262 | { | |
3263 | register Lisp_Object val; | |
3264 | register int count = specpdl_ptr - specpdl; | |
3265 | ||
3266 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3267 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3268 | val = Fprogn (args); |
3269 | return unbind_to (count, val); | |
3270 | } | |
3271 | \f | |
3272 | init_window_once () | |
3273 | { | |
44fa5b1e JB |
3274 | #ifdef MULTI_FRAME |
3275 | selected_frame = make_terminal_frame (); | |
3276 | minibuf_window = selected_frame->minibuffer_window; | |
3277 | selected_window = selected_frame->selected_window; | |
3278 | last_nonminibuf_frame = selected_frame; | |
3279 | #else /* not MULTI_FRAME */ | |
7ab12479 JB |
3280 | extern Lisp_Object get_minibuffer (); |
3281 | ||
87485d6f MW |
3282 | selected_frame = last_nonminibuf_frame = &the_only_frame; |
3283 | ||
95605e15 | 3284 | minibuf_window = make_window (); |
4b206065 | 3285 | FRAME_ROOT_WINDOW (selected_frame) = make_window (); |
7ab12479 | 3286 | |
44fa5b1e JB |
3287 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->next = minibuf_window; |
3288 | XWINDOW (minibuf_window)->prev = FRAME_ROOT_WINDOW (selected_frame); | |
4b206065 | 3289 | XWINDOW (minibuf_window)->mini_p = Qt; |
7ab12479 JB |
3290 | |
3291 | /* These values 9 and 10 are arbitrary, | |
3292 | just so that there is "something there." | |
3293 | Correct values are put in in init_xdisp */ | |
3294 | ||
d834a2e9 KH |
3295 | XSETFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->width, 10); |
3296 | XSETFASTINT (XWINDOW (minibuf_window)->width, 10); | |
7ab12479 | 3297 | |
d834a2e9 KH |
3298 | XSETFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->height, 9); |
3299 | XSETFASTINT (XWINDOW (minibuf_window)->top, 9); | |
3300 | XSETFASTINT (XWINDOW (minibuf_window)->height, 1); | |
7ab12479 JB |
3301 | |
3302 | /* Prevent error in Fset_window_buffer. */ | |
44fa5b1e | 3303 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->buffer = Qt; |
7ab12479 JB |
3304 | XWINDOW (minibuf_window)->buffer = Qt; |
3305 | ||
3306 | /* Now set them up for real. */ | |
44fa5b1e | 3307 | Fset_window_buffer (FRAME_ROOT_WINDOW (selected_frame), |
e5d77022 | 3308 | Fcurrent_buffer ()); |
7ab12479 JB |
3309 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); |
3310 | ||
44fa5b1e | 3311 | selected_window = FRAME_ROOT_WINDOW (selected_frame); |
1d8d96fa JB |
3312 | /* Make sure this window seems more recently used than |
3313 | a newly-created, never-selected window. Increment | |
3314 | window_select_count so the first selection ever will get | |
3315 | something newer than this. */ | |
d834a2e9 | 3316 | XSETFASTINT (XWINDOW (selected_window)->use_time, ++window_select_count); |
44fa5b1e | 3317 | #endif /* not MULTI_FRAME */ |
7ab12479 JB |
3318 | } |
3319 | ||
3320 | syms_of_window () | |
3321 | { | |
3322 | Qwindowp = intern ("windowp"); | |
3323 | staticpro (&Qwindowp); | |
3324 | ||
806b4d9b JB |
3325 | Qwindow_live_p = intern ("window-live-p"); |
3326 | staticpro (&Qwindow_live_p); | |
605be8af | 3327 | |
a58ec57d RS |
3328 | Qtemp_buffer_show_hook = intern ("Qtemp-buffer-show-hook"); |
3329 | staticpro (&Qtemp_buffer_show_hook); | |
3330 | ||
2f83aebe | 3331 | #ifndef MULTI_FRAME |
7ab12479 JB |
3332 | /* Make sure all windows get marked */ |
3333 | staticpro (&minibuf_window); | |
2f83aebe | 3334 | #endif |
7ab12479 JB |
3335 | |
3336 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
3337 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3338 | The function is called with one argument, the buffer to be displayed.\n\ |
7ab12479 JB |
3339 | Used by `with-output-to-temp-buffer'."); |
3340 | Vtemp_buffer_show_function = Qnil; | |
3341 | ||
3342 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3343 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3344 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3345 | that the currently selected window is not acceptable.\n\ | |
3346 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3347 | work using this function."); | |
3348 | Vdisplay_buffer_function = Qnil; | |
3349 | ||
7ab12479 JB |
3350 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3351 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3352 | Vminibuf_scroll_window = Qnil; | |
3353 | ||
3354 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3355 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3356 | Vother_window_scroll_buffer = Qnil; | |
3357 | ||
44fa5b1e | 3358 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3359 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3360 | pop_up_frames = 0; |
7ab12479 | 3361 | |
44fa5b1e | 3362 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3363 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3364 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3365 | \n\ |
44fa5b1e JB |
3366 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3367 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3368 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3369 | |
a90712c2 RS |
3370 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3371 | "*List of buffer names that should have their own special frames.\n\ | |
3372 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3373 | using `special-display-function'.\n\ |
3548e138 RS |
3374 | \n\ |
3375 | An element of the list can be a cons cell instead of just a string.\n\ | |
3376 | Then the car should be a buffer name, and the cdr specifies frame\n\ | |
3377 | parameters for creating the frame for that buffer.\n\ | |
3378 | More precisely, the cdr is passed as the second argument to\n\ | |
3379 | the function found in `special-display-function', when making that frame.\n\ | |
0a952b57 | 3380 | See also `special-display-regexps'."); |
a90712c2 RS |
3381 | Vspecial_display_buffer_names = Qnil; |
3382 | ||
3383 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3384 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3385 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3386 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3387 | using `special-display-function'.\n\ |
3548e138 RS |
3388 | \n\ |
3389 | An element of the list can be a cons cell instead of just a string.\n\ | |
3390 | Then the car should be the regexp, and the cdr specifies frame\n\ | |
3391 | parameters for creating the frame for buffers that match.\n\ | |
3392 | More precisely, the cdr is passed as the second argument to\n\ | |
3393 | the function found in `special-display-function', when making that frame.\n\ | |
0a952b57 | 3394 | See also `special-display-buffer-names'."); |
a90712c2 RS |
3395 | Vspecial_display_regexps = Qnil; |
3396 | ||
3397 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3398 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3399 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3400 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3401 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3402 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3403 | \n\ |
3404 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3405 | or matches a regexp in `special-display-regexps'."); | |
3406 | Vspecial_display_function = Qnil; | |
3407 | ||
855d8627 RS |
3408 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
3409 | "*List of buffer names that should appear in the selected window.\n\ | |
3410 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
3411 | switches to it in the selected window, rather than making it appear\n\ | |
3412 | in some other window. | |
3413 | \n\ | |
3414 | An element of the list can be a cons cell instead of just a string.\n\ | |
3415 | Then the car must be a string, which specifies the buffer name.\n\ | |
3416 | This is for compatibility with `special-display-buffer-names';\n\ | |
3417 | the cdr of the cons cell is ignored.\n\ | |
3418 | \n\ | |
3419 | See also `same-window-regexps'."); | |
3420 | Vsame_window_buffer_names = Qnil; | |
3421 | ||
3422 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
3423 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
3424 | If a buffer name matches one of these regexps, then displaying it\n\ | |
3425 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
3426 | in the selected window, rather than making it appear in some other window.\n\ | |
3427 | \n\ | |
3428 | An element of the list can be a cons cell instead of just a string.\n\ | |
3429 | Then the car must be a string, which specifies the buffer name.\n\ | |
3430 | This is for compatibility with `special-display-buffer-names';\n\ | |
3431 | the cdr of the cons cell is ignored.\n\ | |
3432 | \n\ | |
3433 | See also `same-window-buffer-names'."); | |
3434 | Vsame_window_regexps = Qnil; | |
3435 | ||
7ab12479 JB |
3436 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3437 | "*Non-nil means display-buffer should make new windows."); | |
3438 | pop_up_windows = 1; | |
3439 | ||
3440 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3441 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3442 | next_screen_context_lines = 2; | |
3443 | ||
3444 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3445 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3446 | If there is only one window, it is split regardless of this value."); | |
3447 | split_height_threshold = 500; | |
3448 | ||
3449 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3450 | "*Delete any window less than this tall (including its mode line)."); | |
3451 | window_min_height = 4; | |
3452 | ||
3453 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3454 | "*Delete any window less than this wide."); | |
3455 | window_min_width = 10; | |
3456 | ||
3457 | defsubr (&Sselected_window); | |
3458 | defsubr (&Sminibuffer_window); | |
3459 | defsubr (&Swindow_minibuffer_p); | |
3460 | defsubr (&Swindowp); | |
806b4d9b | 3461 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3462 | defsubr (&Spos_visible_in_window_p); |
3463 | defsubr (&Swindow_buffer); | |
3464 | defsubr (&Swindow_height); | |
3465 | defsubr (&Swindow_width); | |
3466 | defsubr (&Swindow_hscroll); | |
3467 | defsubr (&Sset_window_hscroll); | |
3468 | defsubr (&Swindow_edges); | |
d5783c40 JB |
3469 | defsubr (&Scoordinates_in_window_p); |
3470 | defsubr (&Swindow_at); | |
7ab12479 JB |
3471 | defsubr (&Swindow_point); |
3472 | defsubr (&Swindow_start); | |
3473 | defsubr (&Swindow_end); | |
3474 | defsubr (&Sset_window_point); | |
3475 | defsubr (&Sset_window_start); | |
3476 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3477 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3478 | defsubr (&Swindow_display_table); |
3479 | defsubr (&Sset_window_display_table); | |
3480 | defsubr (&Snext_window); | |
3481 | defsubr (&Sprevious_window); | |
3482 | defsubr (&Sother_window); | |
3483 | defsubr (&Sget_lru_window); | |
3484 | defsubr (&Sget_largest_window); | |
3485 | defsubr (&Sget_buffer_window); | |
3486 | defsubr (&Sdelete_other_windows); | |
3487 | defsubr (&Sdelete_windows_on); | |
3488 | defsubr (&Sreplace_buffer_in_windows); | |
3489 | defsubr (&Sdelete_window); | |
3490 | defsubr (&Sset_window_buffer); | |
3491 | defsubr (&Sselect_window); | |
3492 | defsubr (&Sdisplay_buffer); | |
3493 | defsubr (&Ssplit_window); | |
3494 | defsubr (&Senlarge_window); | |
3495 | defsubr (&Sshrink_window); | |
3496 | defsubr (&Sscroll_up); | |
3497 | defsubr (&Sscroll_down); | |
3498 | defsubr (&Sscroll_left); | |
3499 | defsubr (&Sscroll_right); | |
ccd0664b | 3500 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
3501 | defsubr (&Sscroll_other_window); |
3502 | defsubr (&Srecenter); | |
3503 | defsubr (&Smove_to_window_line); | |
3504 | defsubr (&Swindow_configuration_p); | |
3505 | defsubr (&Sset_window_configuration); | |
3506 | defsubr (&Scurrent_window_configuration); | |
3507 | defsubr (&Ssave_window_excursion); | |
3508 | } | |
3509 | ||
3510 | keys_of_window () | |
3511 | { | |
3512 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3513 | initial_define_key (control_x_map, '2', "split-window"); | |
3514 | initial_define_key (control_x_map, '0', "delete-window"); | |
3515 | initial_define_key (control_x_map, 'o', "other-window"); | |
3516 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3517 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3518 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3519 | ||
3520 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3521 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3522 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3523 | ||
3524 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3525 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3526 | } |