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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 | ||
7ab12479 JB |
91 | /* Fdisplay_buffer always splits the largest window |
92 | if that window is more than this high. */ | |
93 | int split_height_threshold; | |
94 | ||
95 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
96 | int next_screen_context_lines; | |
97 | ||
98 | /* Incremented for each window created. */ | |
99 | static int sequence_number; | |
100 | ||
101 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
102 | \f | |
103 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
104 | "Returns t if OBJ is a window.") | |
105 | (obj) | |
106 | Lisp_Object obj; | |
107 | { | |
017b2bad | 108 | return WINDOWP (obj) ? Qt : Qnil; |
7ab12479 JB |
109 | } |
110 | ||
806b4d9b | 111 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
605be8af JB |
112 | "Returns t if OBJ is a window which is currently visible.") |
113 | (obj) | |
114 | Lisp_Object obj; | |
115 | { | |
017b2bad | 116 | return (WINDOWP (obj) && ! NILP (XWINDOW (obj)->buffer) ? Qt : Qnil); |
605be8af JB |
117 | } |
118 | ||
7ab12479 JB |
119 | Lisp_Object |
120 | make_window () | |
121 | { | |
cffec418 | 122 | Lisp_Object val; |
7ab12479 | 123 | register struct window *p; |
cffec418 KH |
124 | register struct Lisp_Vector *vec; |
125 | int i; | |
126 | ||
127 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
128 | for (i = 0; i < VECSIZE (struct window); i++) | |
129 | vec->contents[i] = Qnil; | |
130 | vec->size = VECSIZE (struct window); | |
131 | p = (struct window *)vec; | |
d834a2e9 KH |
132 | XSETFASTINT (p->sequence_number, ++sequence_number); |
133 | XSETFASTINT (p->left, 0); | |
134 | XSETFASTINT (p->top, 0); | |
135 | XSETFASTINT (p->height, 0); | |
136 | XSETFASTINT (p->width, 0); | |
137 | XSETFASTINT (p->hscroll, 0); | |
138 | XSETFASTINT (p->last_point_x, 0); | |
139 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
140 | p->start = Fmake_marker (); |
141 | p->pointm = Fmake_marker (); | |
d834a2e9 | 142 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 143 | p->frame = Qnil; |
7ab12479 JB |
144 | p->display_table = Qnil; |
145 | p->dedicated = Qnil; | |
cffec418 | 146 | XSETWINDOW (val, p); |
7ab12479 JB |
147 | return val; |
148 | } | |
149 | ||
150 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
151 | "Return the window that the cursor now appears in and commands apply to.") | |
152 | () | |
153 | { | |
154 | return selected_window; | |
155 | } | |
156 | ||
83762ba4 JB |
157 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
158 | "Return the window used now for minibuffers.\n\ | |
159 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
160 | used by that frame.") | |
161 | (frame) | |
162 | Lisp_Object frame; | |
7ab12479 | 163 | { |
44fa5b1e | 164 | #ifdef MULTI_FRAME |
83762ba4 | 165 | if (NILP (frame)) |
74112613 | 166 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
167 | else |
168 | CHECK_LIVE_FRAME (frame, 0); | |
169 | #endif | |
170 | ||
171 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
172 | } |
173 | ||
605be8af | 174 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
175 | "Returns non-nil if WINDOW is a minibuffer window.") |
176 | (window) | |
177 | Lisp_Object window; | |
178 | { | |
179 | struct window *w = decode_window (window); | |
180 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
181 | } | |
182 | ||
183 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
184 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 185 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
186 | Returns nil if that position is scrolled vertically out of view.\n\ |
187 | POS defaults to point; WINDOW, to the selected window.") | |
188 | (pos, window) | |
189 | Lisp_Object pos, window; | |
190 | { | |
191 | register struct window *w; | |
192 | register int top; | |
193 | register int height; | |
194 | register int posint; | |
195 | register struct buffer *buf; | |
196 | struct position posval; | |
afdb2485 | 197 | int hscroll; |
7ab12479 | 198 | |
265a9e55 | 199 | if (NILP (pos)) |
5ce7b543 | 200 | posint = PT; |
7ab12479 JB |
201 | else |
202 | { | |
203 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
204 | posint = XINT (pos); | |
205 | } | |
206 | ||
605be8af | 207 | w = decode_window (window); |
7ab12479 | 208 | top = marker_position (w->start); |
afdb2485 | 209 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
210 | |
211 | if (posint < top) | |
212 | return Qnil; | |
213 | ||
214 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
215 | ||
216 | buf = XBUFFER (w->buffer); | |
217 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
218 | { | |
44fa5b1e | 219 | /* If frame is up to date, |
7ab12479 JB |
220 | use the info recorded about how much text fit on it. */ |
221 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
222 | || (XFASTINT (w->window_end_vpos) < height)) | |
223 | return Qt; | |
224 | return Qnil; | |
225 | } | |
226 | else | |
227 | { | |
33eb4ede | 228 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
229 | return Qnil; |
230 | ||
61b5322b RS |
231 | /* w->start can be out of range. If it is, do something reasonable. */ |
232 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
233 | return Qnil; | |
234 | ||
7ab12479 | 235 | /* If that info is not correct, calculate afresh */ |
afdb2485 KH |
236 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), |
237 | posint, height, 0, | |
535e0b8e | 238 | window_internal_width (w) - 1, |
e37f06d7 | 239 | hscroll, 0, w); |
7ab12479 JB |
240 | |
241 | return posval.vpos < height ? Qt : Qnil; | |
242 | } | |
243 | } | |
244 | \f | |
245 | static struct window * | |
246 | decode_window (window) | |
247 | register Lisp_Object window; | |
248 | { | |
265a9e55 | 249 | if (NILP (window)) |
7ab12479 JB |
250 | return XWINDOW (selected_window); |
251 | ||
605be8af | 252 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
253 | return XWINDOW (window); |
254 | } | |
255 | ||
256 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
257 | "Return the buffer that WINDOW is displaying.") | |
258 | (window) | |
259 | Lisp_Object window; | |
260 | { | |
261 | return decode_window (window)->buffer; | |
262 | } | |
263 | ||
264 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
265 | "Return the number of lines in WINDOW (including its mode line).") | |
266 | (window) | |
267 | Lisp_Object window; | |
268 | { | |
269 | return decode_window (window)->height; | |
270 | } | |
271 | ||
272 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
273 | "Return the number of display columns in WINDOW.\n\ |
274 | This is the width that is usable columns available for text in WINDOW.\n\ | |
275 | If you want to find out how many columns WINDOW takes up,\n\ | |
276 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
277 | (window) |
278 | Lisp_Object window; | |
279 | { | |
ee61d94e | 280 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
281 | } |
282 | ||
283 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
284 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
285 | (window) | |
286 | Lisp_Object window; | |
287 | { | |
288 | return decode_window (window)->hscroll; | |
289 | } | |
290 | ||
291 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
292 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
293 | NCOL should be zero or positive.") | |
294 | (window, ncol) | |
295 | register Lisp_Object window, ncol; | |
296 | { | |
297 | register struct window *w; | |
298 | ||
299 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 300 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 JB |
301 | if (XFASTINT (ncol) >= (1 << (SHORTBITS - 1))) |
302 | args_out_of_range (ncol, Qnil); | |
303 | w = decode_window (window); | |
7f4161e0 | 304 | if (XINT (w->hscroll) != XINT (ncol)) |
7ab12479 JB |
305 | clip_changed = 1; /* Prevent redisplay shortcuts */ |
306 | w->hscroll = ncol; | |
307 | return ncol; | |
308 | } | |
309 | ||
310 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, | |
311 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 312 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
313 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
314 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
315 | and its mode-line.") | |
316 | (window) | |
317 | Lisp_Object window; | |
318 | { | |
319 | register struct window *w = decode_window (window); | |
320 | ||
321 | return Fcons (w->left, Fcons (w->top, | |
322 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
323 | Fcons (make_number (XFASTINT (w->top) | |
324 | + XFASTINT (w->height)), | |
325 | Qnil)))); | |
326 | } | |
327 | ||
d5783c40 JB |
328 | /* Test if the character at column *x, row *y is within window *w. |
329 | If it is not, return 0; | |
330 | if it is in the window's text area, | |
331 | set *x and *y to its location relative to the upper left corner | |
332 | of the window, and | |
333 | return 1; | |
334 | if it is on the window's modeline, return 2; | |
335 | if it is on the border between the window and its right sibling, | |
336 | return 3. */ | |
337 | static int | |
338 | coordinates_in_window (w, x, y) | |
339 | register struct window *w; | |
340 | register int *x, *y; | |
341 | { | |
342 | register int left = XINT (w->left); | |
343 | register int width = XINT (w->width); | |
344 | register int window_height = XINT (w->height); | |
345 | register int top = XFASTINT (w->top); | |
346 | ||
347 | if ( *x < left || *x >= left + width | |
348 | || *y < top || *y >= top + window_height) | |
349 | return 0; | |
350 | ||
351 | /* Is the character is the mode line? */ | |
352 | if (*y == top + window_height - 1 | |
05c2896a | 353 | && ! MINI_WINDOW_P (w)) |
d5783c40 JB |
354 | return 2; |
355 | ||
356 | /* Is the character in the right border? */ | |
357 | if (*x == left + width - 1 | |
44fa5b1e | 358 | && left + width != FRAME_WIDTH (XFRAME (w->frame))) |
d5783c40 JB |
359 | return 3; |
360 | ||
361 | *x -= left; | |
362 | *y -= top; | |
363 | return 1; | |
364 | } | |
365 | ||
366 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
367 | Scoordinates_in_window_p, 2, 2, 0, | |
368 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 369 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 370 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 371 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 372 | frame.\n\ |
d5783c40 JB |
373 | If COORDINATES are in the text portion of WINDOW,\n\ |
374 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 375 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 376 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 377 | `vertical-line' is returned.") |
d5783c40 JB |
378 | (coordinates, window) |
379 | register Lisp_Object coordinates, window; | |
380 | { | |
381 | int x, y; | |
382 | ||
605be8af | 383 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
384 | CHECK_CONS (coordinates, 1); |
385 | x = XINT (Fcar (coordinates)); | |
386 | y = XINT (Fcdr (coordinates)); | |
387 | ||
388 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
389 | { | |
390 | case 0: /* NOT in window at all. */ | |
391 | return Qnil; | |
392 | ||
393 | case 1: /* In text part of window. */ | |
394 | return Fcons (x, y); | |
395 | ||
396 | case 2: /* In mode line of window. */ | |
397 | return Qmode_line; | |
398 | ||
399 | case 3: /* On right border of window. */ | |
e5d77022 | 400 | return Qvertical_line; |
d5783c40 JB |
401 | |
402 | default: | |
403 | abort (); | |
404 | } | |
405 | } | |
406 | ||
7ab12479 | 407 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
408 | Lisp_Object. If x, y is on the window's modeline, set *part |
409 | to 1; if it is on the separating line between the window and its | |
410 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
411 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 412 | Lisp_Object |
44fa5b1e JB |
413 | window_from_coordinates (frame, x, y, part) |
414 | FRAME_PTR frame; | |
7ab12479 | 415 | int x, y; |
d5783c40 | 416 | int *part; |
7ab12479 JB |
417 | { |
418 | register Lisp_Object tem, first; | |
419 | ||
44fa5b1e | 420 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 421 | |
d5783c40 | 422 | do |
7ab12479 JB |
423 | { |
424 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
425 | ||
426 | if (found) | |
427 | { | |
d5783c40 | 428 | *part = found - 1; |
7ab12479 JB |
429 | return tem; |
430 | } | |
431 | ||
d5783c40 | 432 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 433 | } |
d5783c40 JB |
434 | while (! EQ (tem, first)); |
435 | ||
436 | return Qnil; | |
7ab12479 JB |
437 | } |
438 | ||
ab17c3f2 | 439 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 440 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
441 | If omitted, FRAME defaults to the currently selected frame.\n\ |
442 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 443 | column 0.") |
b0c33a94 RS |
444 | (x, y, frame) |
445 | Lisp_Object x, y, frame; | |
7ab12479 JB |
446 | { |
447 | int part; | |
448 | ||
4b206065 | 449 | #ifdef MULTI_FRAME |
44fa5b1e | 450 | if (NILP (frame)) |
74112613 | 451 | XSETFRAME (frame, selected_frame); |
d5783c40 | 452 | else |
44fa5b1e | 453 | CHECK_LIVE_FRAME (frame, 2); |
4b206065 | 454 | #endif |
b0c33a94 RS |
455 | CHECK_NUMBER (x, 0); |
456 | CHECK_NUMBER (y, 1); | |
7ab12479 | 457 | |
44fa5b1e | 458 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 459 | XINT (x), XINT (y), |
7ab12479 JB |
460 | &part); |
461 | } | |
462 | ||
463 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
464 | "Return current value of point in WINDOW.\n\ | |
465 | For a nonselected window, this is the value point would have\n\ | |
466 | if that window were selected.\n\ | |
467 | \n\ | |
468 | Note that, when WINDOW is the selected window and its buffer\n\ | |
469 | is also currently selected, the value returned is the same as (point).\n\ | |
470 | It would be more strictly correct to return the `top-level' value\n\ | |
471 | of point, outside of any save-excursion forms.\n\ | |
472 | But that is hard to define.") | |
473 | (window) | |
474 | Lisp_Object window; | |
475 | { | |
476 | register struct window *w = decode_window (window); | |
477 | ||
478 | if (w == XWINDOW (selected_window) | |
479 | && current_buffer == XBUFFER (w->buffer)) | |
480 | return Fpoint (); | |
481 | return Fmarker_position (w->pointm); | |
482 | } | |
483 | ||
484 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
485 | "Return position at which display currently starts in WINDOW.") | |
486 | (window) | |
487 | Lisp_Object window; | |
488 | { | |
489 | return Fmarker_position (decode_window (window)->start); | |
490 | } | |
491 | ||
8646118f RS |
492 | /* This is text temporarily removed from the doc string below. |
493 | ||
7250968e RS |
494 | This function returns nil if the position is not currently known.\n\ |
495 | That happens when redisplay is preempted and doesn't finish.\n\ | |
496 | If in that case you want to compute where the end of the window would\n\ | |
497 | have been if redisplay had finished, do this:\n\ | |
498 | (save-excursion\n\ | |
499 | (goto-char (window-start window))\n\ | |
500 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
501 | (point))") */ |
502 | ||
503 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
504 | "Return position at which display currently ends in WINDOW.\n\ | |
505 | This is updated by redisplay, when it runs to completion.\n\ | |
506 | Simply changing the buffer text or setting `window-start'\n\ | |
507 | does not update this value.") | |
7ab12479 JB |
508 | (window) |
509 | Lisp_Object window; | |
510 | { | |
511 | Lisp_Object value; | |
512 | struct window *w = decode_window (window); | |
5a41ab94 RS |
513 | Lisp_Object buf; |
514 | ||
515 | buf = w->buffer; | |
516 | CHECK_BUFFER (buf, 0); | |
517 | ||
8646118f | 518 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
519 | /* If we don't know the end position, return nil. |
520 | The user can compute it with vertical-motion if he wants to. | |
521 | It would be nicer to do it automatically, | |
522 | but that's so slow that it would probably bother people. */ | |
523 | if (NILP (w->window_end_valid)) | |
524 | return Qnil; | |
8646118f | 525 | #endif |
7250968e | 526 | |
74112613 KH |
527 | XSETINT (value, |
528 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
529 | |
530 | return value; | |
531 | } | |
532 | ||
533 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
534 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
535 | (window, pos) | |
536 | Lisp_Object window, pos; | |
537 | { | |
538 | register struct window *w = decode_window (window); | |
539 | ||
540 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
541 | if (w == XWINDOW (selected_window)) | |
542 | Fgoto_char (pos); | |
543 | else | |
544 | set_marker_restricted (w->pointm, pos, w->buffer); | |
545 | ||
546 | return pos; | |
547 | } | |
548 | ||
549 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
550 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
551 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
552 | from overriding motion of point in order to display at this exact start.") | |
553 | (window, pos, noforce) | |
554 | Lisp_Object window, pos, noforce; | |
555 | { | |
556 | register struct window *w = decode_window (window); | |
557 | ||
558 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
559 | set_marker_restricted (w->start, pos, w->buffer); | |
560 | /* this is not right, but much easier than doing what is right. */ | |
561 | w->start_at_line_beg = Qnil; | |
265a9e55 | 562 | if (NILP (noforce)) |
7ab12479 JB |
563 | w->force_start = Qt; |
564 | w->update_mode_line = Qt; | |
d834a2e9 | 565 | XSETFASTINT (w->last_modified, 0); |
62c07cc7 JB |
566 | if (!EQ (window, selected_window)) |
567 | windows_or_buffers_changed++; | |
7ab12479 JB |
568 | return pos; |
569 | } | |
570 | ||
571 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
572 | 1, 1, 0, | |
573 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 574 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
575 | (window) |
576 | Lisp_Object window; | |
577 | { | |
578 | return decode_window (window)->dedicated; | |
579 | } | |
580 | ||
d207b766 RS |
581 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
582 | Sset_window_dedicated_p, 2, 2, 0, | |
583 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
584 | If it is dedicated, Emacs will not automatically change\n\ | |
585 | which buffer appears in it.\n\ | |
586 | The second argument is the new value for the dedication flag;\n\ | |
587 | non-nil means yes.") | |
7ab12479 JB |
588 | (window, arg) |
589 | Lisp_Object window, arg; | |
590 | { | |
591 | register struct window *w = decode_window (window); | |
592 | ||
265a9e55 | 593 | if (NILP (arg)) |
7ab12479 JB |
594 | w->dedicated = Qnil; |
595 | else | |
d207b766 | 596 | w->dedicated = Qt; |
7ab12479 JB |
597 | |
598 | return w->dedicated; | |
599 | } | |
600 | ||
601 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
602 | 0, 1, 0, | |
603 | "Return the display-table that WINDOW is using.") | |
604 | (window) | |
605 | Lisp_Object window; | |
606 | { | |
607 | return decode_window (window)->display_table; | |
608 | } | |
609 | ||
610 | /* Get the display table for use currently on window W. | |
611 | This is either W's display table or W's buffer's display table. | |
612 | Ignore the specified tables if they are not valid; | |
613 | if no valid table is specified, return 0. */ | |
614 | ||
615 | struct Lisp_Vector * | |
616 | window_display_table (w) | |
617 | struct window *w; | |
618 | { | |
619 | Lisp_Object tem; | |
620 | tem = w->display_table; | |
017b2bad | 621 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
622 | return XVECTOR (tem); |
623 | tem = XBUFFER (w->buffer)->display_table; | |
017b2bad | 624 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
625 | return XVECTOR (tem); |
626 | tem = Vstandard_display_table; | |
017b2bad | 627 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
628 | return XVECTOR (tem); |
629 | return 0; | |
630 | } | |
631 | ||
3a2712f9 | 632 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
633 | "Set WINDOW's display-table to TABLE.") |
634 | (window, table) | |
635 | register Lisp_Object window, table; | |
636 | { | |
637 | register struct window *w; | |
638 | register Lisp_Object z; /* Return value. */ | |
639 | ||
640 | w = decode_window (window); | |
641 | w->display_table = table; | |
642 | return table; | |
643 | } | |
644 | \f | |
645 | /* Record info on buffer window w is displaying | |
646 | when it is about to cease to display that buffer. */ | |
647 | static | |
648 | unshow_buffer (w) | |
649 | register struct window *w; | |
650 | { | |
12cae7c0 | 651 | Lisp_Object buf; |
7ab12479 | 652 | |
12cae7c0 | 653 | buf = w->buffer; |
7ab12479 JB |
654 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) |
655 | abort (); | |
656 | ||
573f41ab | 657 | #if 0 |
7ab12479 JB |
658 | if (w == XWINDOW (selected_window) |
659 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
660 | /* Do this except when the selected window's buffer | |
661 | is being removed from some other window. */ | |
573f41ab RS |
662 | #endif |
663 | /* last_window_start records the start position that this buffer | |
664 | had in the last window to be disconnected from it. | |
665 | Now that this statement is unconditional, | |
666 | it is possible for the buffer to be displayed in the | |
667 | selected window, while last_window_start reflects another | |
668 | window which was recently showing the same buffer. | |
669 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
670 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
671 | ||
672 | /* Point in the selected window's buffer | |
673 | is actually stored in that buffer, and the window's pointm isn't used. | |
674 | So don't clobber point in that buffer. */ | |
675 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
676 | BUF_PT (XBUFFER (buf)) | |
677 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
678 | marker_position (w->pointm), | |
679 | BUF_ZV (XBUFFER (buf))); | |
680 | } | |
681 | ||
682 | /* Put replacement into the window structure in place of old. */ | |
683 | static | |
684 | replace_window (old, replacement) | |
685 | Lisp_Object old, replacement; | |
686 | { | |
687 | register Lisp_Object tem; | |
688 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
689 | ||
44fa5b1e JB |
690 | /* If OLD is its frame's root_window, then replacement is the new |
691 | root_window for that frame. */ | |
7ab12479 | 692 | |
7f4161e0 | 693 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 694 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
695 | |
696 | p->left = o->left; | |
697 | p->top = o->top; | |
698 | p->width = o->width; | |
699 | p->height = o->height; | |
700 | ||
701 | p->next = tem = o->next; | |
265a9e55 | 702 | if (!NILP (tem)) |
7ab12479 JB |
703 | XWINDOW (tem)->prev = replacement; |
704 | ||
705 | p->prev = tem = o->prev; | |
265a9e55 | 706 | if (!NILP (tem)) |
7ab12479 JB |
707 | XWINDOW (tem)->next = replacement; |
708 | ||
709 | p->parent = tem = o->parent; | |
265a9e55 | 710 | if (!NILP (tem)) |
7ab12479 JB |
711 | { |
712 | if (EQ (XWINDOW (tem)->vchild, old)) | |
713 | XWINDOW (tem)->vchild = replacement; | |
714 | if (EQ (XWINDOW (tem)->hchild, old)) | |
715 | XWINDOW (tem)->hchild = replacement; | |
716 | } | |
717 | ||
718 | /*** Here, if replacement is a vertical combination | |
719 | and so is its new parent, we should make replacement's | |
720 | children be children of that parent instead. ***/ | |
721 | } | |
722 | ||
723 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
724 | "Remove WINDOW from the display. Default is selected window.") | |
725 | (window) | |
726 | register Lisp_Object window; | |
727 | { | |
728 | register Lisp_Object tem, parent, sib; | |
729 | register struct window *p; | |
730 | register struct window *par; | |
731 | ||
605be8af JB |
732 | /* Because this function is called by other C code on non-leaf |
733 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
734 | so we can't decode_window here. */ | |
265a9e55 | 735 | if (NILP (window)) |
7ab12479 JB |
736 | window = selected_window; |
737 | else | |
738 | CHECK_WINDOW (window, 0); | |
7ab12479 | 739 | p = XWINDOW (window); |
605be8af JB |
740 | |
741 | /* It's okay to delete an already-deleted window. */ | |
742 | if (NILP (p->buffer) | |
743 | && NILP (p->hchild) | |
744 | && NILP (p->vchild)) | |
745 | return Qnil; | |
746 | ||
7ab12479 | 747 | parent = p->parent; |
265a9e55 | 748 | if (NILP (parent)) |
7ab12479 JB |
749 | error ("Attempt to delete minibuffer or sole ordinary window"); |
750 | par = XWINDOW (parent); | |
751 | ||
752 | windows_or_buffers_changed++; | |
753 | ||
605be8af JB |
754 | /* Are we trying to delete any frame's selected window? */ |
755 | { | |
0def0403 | 756 | Lisp_Object frame, pwindow; |
605be8af | 757 | |
0def0403 RS |
758 | /* See if the frame's selected window is either WINDOW |
759 | or any subwindow of it, by finding all that window's parents | |
760 | and comparing each one with WINDOW. */ | |
761 | frame = WINDOW_FRAME (XWINDOW (window)); | |
762 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
763 | ||
764 | while (!NILP (pwindow)) | |
765 | { | |
766 | if (EQ (window, pwindow)) | |
767 | break; | |
768 | pwindow = XWINDOW (pwindow)->parent; | |
769 | } | |
770 | ||
771 | if (EQ (window, pwindow)) | |
605be8af | 772 | { |
89bca612 RS |
773 | Lisp_Object alternative; |
774 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
775 | |
776 | /* If we're about to delete the selected window on the | |
777 | selected frame, then we should use Fselect_window to select | |
778 | the new window. On the other hand, if we're about to | |
779 | delete the selected window on any other frame, we shouldn't do | |
780 | anything but set the frame's selected_window slot. */ | |
781 | if (EQ (window, selected_window)) | |
782 | Fselect_window (alternative); | |
783 | else | |
0def0403 | 784 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
785 | } |
786 | } | |
7ab12479 JB |
787 | |
788 | tem = p->buffer; | |
789 | /* tem is null for dummy parent windows | |
790 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 791 | if (!NILP (tem)) |
7ab12479 JB |
792 | { |
793 | unshow_buffer (p); | |
794 | unchain_marker (p->pointm); | |
795 | unchain_marker (p->start); | |
7ab12479 JB |
796 | } |
797 | ||
798 | tem = p->next; | |
265a9e55 | 799 | if (!NILP (tem)) |
7ab12479 JB |
800 | XWINDOW (tem)->prev = p->prev; |
801 | ||
802 | tem = p->prev; | |
265a9e55 | 803 | if (!NILP (tem)) |
7ab12479 JB |
804 | XWINDOW (tem)->next = p->next; |
805 | ||
806 | if (EQ (window, par->hchild)) | |
807 | par->hchild = p->next; | |
808 | if (EQ (window, par->vchild)) | |
809 | par->vchild = p->next; | |
810 | ||
811 | /* Find one of our siblings to give our space to. */ | |
812 | sib = p->prev; | |
265a9e55 | 813 | if (NILP (sib)) |
7ab12479 JB |
814 | { |
815 | /* If p gives its space to its next sibling, that sibling needs | |
816 | to have its top/left side pulled back to where p's is. | |
817 | set_window_{height,width} will re-position the sibling's | |
818 | children. */ | |
819 | sib = p->next; | |
7f4161e0 JB |
820 | XWINDOW (sib)->top = p->top; |
821 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
822 | } |
823 | ||
824 | /* Stretch that sibling. */ | |
265a9e55 | 825 | if (!NILP (par->vchild)) |
7ab12479 JB |
826 | set_window_height (sib, |
827 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
828 | 1); | |
265a9e55 | 829 | if (!NILP (par->hchild)) |
7ab12479 JB |
830 | set_window_width (sib, |
831 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
832 | 1); | |
833 | ||
834 | /* If parent now has only one child, | |
835 | put the child into the parent's place. */ | |
7ab12479 | 836 | tem = par->hchild; |
265a9e55 | 837 | if (NILP (tem)) |
7ab12479 | 838 | tem = par->vchild; |
265a9e55 | 839 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 840 | replace_window (parent, tem); |
605be8af JB |
841 | |
842 | /* Since we may be deleting combination windows, we must make sure that | |
843 | not only p but all its children have been marked as deleted. */ | |
844 | if (! NILP (p->hchild)) | |
845 | delete_all_subwindows (XWINDOW (p->hchild)); | |
846 | else if (! NILP (p->vchild)) | |
847 | delete_all_subwindows (XWINDOW (p->vchild)); | |
848 | ||
849 | /* Mark this window as deleted. */ | |
850 | p->buffer = p->hchild = p->vchild = Qnil; | |
851 | ||
7ab12479 JB |
852 | return Qnil; |
853 | } | |
854 | \f | |
7ab12479 | 855 | |
44fa5b1e | 856 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 857 | |
26f6279d JB |
858 | /* This comment supplies the doc string for `next-window', |
859 | for make-docfile to see. We cannot put this in the real DEFUN | |
860 | due to limits in the Unix cpp. | |
861 | ||
862 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 863 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
864 | If omitted, WINDOW defaults to the selected window.\n\ |
865 | \n\ | |
866 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
867 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
868 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
869 | minibuffer even if it is active.\n\ | |
870 | \n\ | |
44fa5b1e JB |
871 | Several frames may share a single minibuffer; if the minibuffer\n\ |
872 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 873 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
874 | set of windows even when the minibuffer is on another frame. If the\n\ |
875 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 876 | \n\ |
44fa5b1e JB |
877 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
878 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 879 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 880 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
89bca612 | 881 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
882 | \n\ |
883 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
884 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
885 | windows, eventually ending up back at the window you started with.\n\ | |
886 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
887 | (window, minibuf, all_frames) */ |
888 | ||
889 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
890 | 0) | |
44fa5b1e JB |
891 | (window, minibuf, all_frames) |
892 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
893 | { |
894 | register Lisp_Object tem; | |
d5783c40 | 895 | Lisp_Object start_window; |
7ab12479 | 896 | |
265a9e55 | 897 | if (NILP (window)) |
7ab12479 JB |
898 | window = selected_window; |
899 | else | |
605be8af | 900 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 901 | |
d5783c40 JB |
902 | start_window = window; |
903 | ||
904 | /* minibuf == nil may or may not include minibuffers. | |
905 | Decide if it does. */ | |
265a9e55 | 906 | if (NILP (minibuf)) |
d5783c40 JB |
907 | minibuf = (minibuf_level ? Qt : Qlambda); |
908 | ||
c6e73093 | 909 | #ifdef MULTI_FRAME |
1bb80f72 | 910 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e JB |
911 | if (NILP (all_frames)) |
912 | all_frames = (EQ (minibuf, Qt) | |
1bb80f72 RS |
913 | ? (FRAME_MINIBUF_WINDOW |
914 | (XFRAME | |
915 | (WINDOW_FRAME | |
916 | (XWINDOW (window))))) | |
917 | : Qnil); | |
89bca612 RS |
918 | else if (EQ (all_frames, Qvisible)) |
919 | ; | |
f812f9c6 RS |
920 | else if (XFASTINT (all_frames) == 0) |
921 | ; | |
44fa5b1e JB |
922 | else if (! EQ (all_frames, Qt)) |
923 | all_frames = Qnil; | |
644b477c RS |
924 | /* Now all_frames is t meaning search all frames, |
925 | nil meaning search just current frame, | |
f812f9c6 RS |
926 | visible meaning search just visible frames, |
927 | 0 meaning search visible and iconified frames, | |
644b477c | 928 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 929 | #endif |
7ab12479 JB |
930 | |
931 | /* Do this loop at least once, to get the next window, and perhaps | |
932 | again, if we hit the minibuffer and that is not acceptable. */ | |
933 | do | |
934 | { | |
935 | /* Find a window that actually has a next one. This loop | |
936 | climbs up the tree. */ | |
265a9e55 JB |
937 | while (tem = XWINDOW (window)->next, NILP (tem)) |
938 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 939 | window = tem; |
d5783c40 | 940 | else |
7ab12479 | 941 | { |
44fa5b1e JB |
942 | /* We've reached the end of this frame. |
943 | Which other frames are acceptable? */ | |
944 | tem = WINDOW_FRAME (XWINDOW (window)); | |
945 | #ifdef MULTI_FRAME | |
946 | if (! NILP (all_frames)) | |
1bb80f72 RS |
947 | { |
948 | Lisp_Object tem1; | |
949 | ||
950 | tem1 = tem; | |
951 | tem = next_frame (tem, all_frames); | |
952 | /* In the case where the minibuffer is active, | |
953 | and we include its frame as well as the selected one, | |
954 | next_frame may get stuck in that frame. | |
955 | If that happens, go back to the selected frame | |
956 | so we can complete the cycle. */ | |
957 | if (EQ (tem, tem1)) | |
74112613 | 958 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 959 | } |
7ab12479 | 960 | #endif |
44fa5b1e | 961 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 962 | |
7ab12479 JB |
963 | break; |
964 | } | |
965 | ||
966 | window = tem; | |
d5783c40 | 967 | |
7ab12479 JB |
968 | /* If we're in a combination window, find its first child and |
969 | recurse on that. Otherwise, we've found the window we want. */ | |
970 | while (1) | |
971 | { | |
265a9e55 | 972 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 973 | window = XWINDOW (window)->hchild; |
265a9e55 | 974 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
975 | window = XWINDOW (window)->vchild; |
976 | else break; | |
977 | } | |
978 | } | |
d5783c40 JB |
979 | /* Which windows are acceptible? |
980 | Exit the loop and accept this window if | |
7ab12479 | 981 | this isn't a minibuffer window, or |
d5783c40 JB |
982 | we're accepting minibuffer windows, or |
983 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 984 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 985 | && ! EQ (minibuf, Qt) |
7f4161e0 | 986 | && ! EQ (window, start_window)); |
7ab12479 JB |
987 | |
988 | return window; | |
989 | } | |
990 | ||
26f6279d JB |
991 | /* This comment supplies the doc string for `previous-window', |
992 | for make-docfile to see. We cannot put this in the real DEFUN | |
993 | due to limits in the Unix cpp. | |
994 | ||
995 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
d5783c40 JB |
996 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
997 | If omitted, WINDOW defaults to the selected window.\n\ | |
998 | \n\ | |
999 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1000 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1001 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1002 | minibuffer even if it is active.\n\ | |
1003 | \n\ | |
44fa5b1e JB |
1004 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1005 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1006 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1007 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1008 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1009 | \n\ |
44fa5b1e JB |
1010 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1011 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1012 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1013 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
89bca612 | 1014 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1015 | \n\ |
1016 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1017 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1018 | windows, eventually ending up back at the window you started with.\n\ | |
1019 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1020 | (window, minibuf, all_frames) */ |
1021 | ||
1022 | ||
1023 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1024 | 0) | |
44fa5b1e JB |
1025 | (window, minibuf, all_frames) |
1026 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1027 | { |
1028 | register Lisp_Object tem; | |
d5783c40 | 1029 | Lisp_Object start_window; |
7ab12479 | 1030 | |
265a9e55 | 1031 | if (NILP (window)) |
7ab12479 JB |
1032 | window = selected_window; |
1033 | else | |
605be8af | 1034 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1035 | |
d5783c40 JB |
1036 | start_window = window; |
1037 | ||
1038 | /* minibuf == nil may or may not include minibuffers. | |
1039 | Decide if it does. */ | |
265a9e55 | 1040 | if (NILP (minibuf)) |
d5783c40 JB |
1041 | minibuf = (minibuf_level ? Qt : Qlambda); |
1042 | ||
c6e73093 | 1043 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1044 | /* all_frames == nil doesn't specify which frames to include. |
1045 | Decide which frames it includes. */ | |
1046 | if (NILP (all_frames)) | |
1047 | all_frames = (EQ (minibuf, Qt) | |
1048 | ? (FRAME_MINIBUF_WINDOW | |
1049 | (XFRAME | |
1050 | (WINDOW_FRAME | |
d5783c40 JB |
1051 | (XWINDOW (window))))) |
1052 | : Qnil); | |
89bca612 RS |
1053 | else if (EQ (all_frames, Qvisible)) |
1054 | ; | |
f812f9c6 RS |
1055 | else if (XFASTINT (all_frames) == 0) |
1056 | ; | |
44fa5b1e JB |
1057 | else if (! EQ (all_frames, Qt)) |
1058 | all_frames = Qnil; | |
644b477c RS |
1059 | /* Now all_frames is t meaning search all frames, |
1060 | nil meaning search just current frame, | |
f812f9c6 RS |
1061 | visible meaning search just visible frames, |
1062 | 0 meaning search visible and iconified frames, | |
644b477c | 1063 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 1064 | #endif |
7ab12479 JB |
1065 | |
1066 | /* Do this loop at least once, to get the previous window, and perhaps | |
1067 | again, if we hit the minibuffer and that is not acceptable. */ | |
1068 | do | |
1069 | { | |
1070 | /* Find a window that actually has a previous one. This loop | |
1071 | climbs up the tree. */ | |
265a9e55 JB |
1072 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1073 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1074 | window = tem; |
d5783c40 | 1075 | else |
7ab12479 | 1076 | { |
44fa5b1e JB |
1077 | /* We have found the top window on the frame. |
1078 | Which frames are acceptable? */ | |
1079 | tem = WINDOW_FRAME (XWINDOW (window)); | |
1080 | #ifdef MULTI_FRAME | |
1081 | if (! NILP (all_frames)) | |
dbc4e1c1 JB |
1082 | /* It's actually important that we use prev_frame here, |
1083 | rather than next_frame. All the windows acceptable | |
1084 | according to the given parameters should form a ring; | |
1085 | Fnext_window and Fprevious_window should go back and | |
1086 | forth around the ring. If we use next_frame here, | |
1087 | then Fnext_window and Fprevious_window take different | |
1088 | paths through the set of acceptable windows. | |
1089 | window_loop assumes that these `ring' requirement are | |
1090 | met. */ | |
1bb80f72 RS |
1091 | { |
1092 | Lisp_Object tem1; | |
1093 | ||
1094 | tem1 = tem; | |
1095 | tem = prev_frame (tem, all_frames); | |
1096 | /* In the case where the minibuffer is active, | |
1097 | and we include its frame as well as the selected one, | |
1098 | next_frame may get stuck in that frame. | |
1099 | If that happens, go back to the selected frame | |
1100 | so we can complete the cycle. */ | |
1101 | if (EQ (tem, tem1)) | |
74112613 | 1102 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1103 | } |
7ab12479 | 1104 | #endif |
644b477c RS |
1105 | /* If this frame has a minibuffer, find that window first, |
1106 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1107 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1108 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1109 | else | |
644b477c | 1110 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1111 | |
7ab12479 JB |
1112 | break; |
1113 | } | |
1114 | ||
1115 | window = tem; | |
1116 | /* If we're in a combination window, find its last child and | |
1117 | recurse on that. Otherwise, we've found the window we want. */ | |
1118 | while (1) | |
1119 | { | |
265a9e55 | 1120 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1121 | window = XWINDOW (window)->hchild; |
265a9e55 | 1122 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1123 | window = XWINDOW (window)->vchild; |
1124 | else break; | |
265a9e55 | 1125 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1126 | window = tem; |
1127 | } | |
1128 | } | |
d5783c40 JB |
1129 | /* Which windows are acceptable? |
1130 | Exit the loop and accept this window if | |
7ab12479 | 1131 | this isn't a minibuffer window, or |
d5783c40 JB |
1132 | we're accepting minibuffer windows, or |
1133 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 1134 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1135 | && !EQ (minibuf, Qt) |
7f4161e0 | 1136 | && !EQ (window, start_window)); |
7ab12479 JB |
1137 | |
1138 | return window; | |
1139 | } | |
1140 | ||
62c07cc7 | 1141 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1142 | "Select the ARG'th different window on this frame.\n\ |
1143 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1144 | This command selects the window ARG steps away in that order.\n\ |
1145 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e JB |
1146 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
1147 | (n, all_frames) | |
1148 | register Lisp_Object n, all_frames; | |
7ab12479 JB |
1149 | { |
1150 | register int i; | |
1151 | register Lisp_Object w; | |
1152 | ||
1153 | CHECK_NUMBER (n, 0); | |
1154 | w = selected_window; | |
1155 | i = XINT (n); | |
1156 | ||
1157 | while (i > 0) | |
1158 | { | |
44fa5b1e | 1159 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1160 | i--; |
1161 | } | |
1162 | while (i < 0) | |
1163 | { | |
44fa5b1e | 1164 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1165 | i++; |
1166 | } | |
1167 | Fselect_window (w); | |
1168 | return Qnil; | |
1169 | } | |
1170 | \f | |
1171 | /* Look at all windows, performing an operation specified by TYPE | |
1172 | with argument OBJ. | |
75d8f668 | 1173 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1174 | Qnil, look at just the selected frame; |
89bca612 | 1175 | Qvisible, look at visible frames; |
75d8f668 | 1176 | a frame, just look at windows on that frame. |
7ab12479 JB |
1177 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1178 | */ | |
1179 | ||
1180 | enum window_loop | |
1181 | { | |
1182 | WINDOW_LOOP_UNUSED, | |
1183 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1184 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1185 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1186 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1187 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1188 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1189 | }; |
1190 | ||
1191 | static Lisp_Object | |
44fa5b1e | 1192 | window_loop (type, obj, mini, frames) |
7ab12479 | 1193 | enum window_loop type; |
44fa5b1e | 1194 | register Lisp_Object obj, frames; |
7ab12479 JB |
1195 | int mini; |
1196 | { | |
1197 | register Lisp_Object w; | |
1198 | register Lisp_Object best_window; | |
1199 | register Lisp_Object next_window; | |
4b206065 | 1200 | register Lisp_Object last_window; |
44fa5b1e | 1201 | FRAME_PTR frame; |
89bca612 RS |
1202 | Lisp_Object frame_arg; |
1203 | frame_arg = Qt; | |
44fa5b1e | 1204 | |
4b206065 | 1205 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1206 | /* If we're only looping through windows on a particular frame, |
1207 | frame points to that frame. If we're looping through windows | |
1208 | on all frames, frame is 0. */ | |
1209 | if (FRAMEP (frames)) | |
1210 | frame = XFRAME (frames); | |
1211 | else if (NILP (frames)) | |
1212 | frame = selected_frame; | |
7ab12479 | 1213 | else |
44fa5b1e | 1214 | frame = 0; |
89bca612 RS |
1215 | if (frame) |
1216 | frame_arg = Qlambda; | |
f812f9c6 RS |
1217 | else if (XFASTINT (frames) == 0) |
1218 | frame_arg = frames; | |
89bca612 RS |
1219 | else if (EQ (frames, Qvisible)) |
1220 | frame_arg = frames; | |
4b206065 JB |
1221 | #else |
1222 | frame = 0; | |
1223 | #endif | |
7ab12479 | 1224 | |
89bca612 RS |
1225 | /* frame_arg is Qlambda to stick to one frame, |
1226 | Qvisible to consider all visible frames, | |
1227 | or Qt otherwise. */ | |
1228 | ||
7ab12479 | 1229 | /* Pick a window to start with. */ |
017b2bad | 1230 | if (WINDOWP (obj)) |
4b206065 | 1231 | w = obj; |
44fa5b1e | 1232 | else if (frame) |
4b206065 | 1233 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1234 | else |
4b206065 JB |
1235 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1236 | ||
1237 | /* Figure out the last window we're going to mess with. Since | |
1238 | Fnext_window, given the same options, is guaranteed to go in a | |
1239 | ring, we can just use Fprevious_window to find the last one. | |
1240 | ||
1241 | We can't just wait until we hit the first window again, because | |
1242 | it might be deleted. */ | |
1243 | ||
89bca612 | 1244 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1245 | |
7ab12479 | 1246 | best_window = Qnil; |
4b206065 | 1247 | for (;;) |
7ab12479 | 1248 | { |
75d8f668 JB |
1249 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1250 | ||
7ab12479 JB |
1251 | /* Pick the next window now, since some operations will delete |
1252 | the current window. */ | |
89bca612 | 1253 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1254 | |
d29a5631 RS |
1255 | /* Note that we do not pay attention here to whether |
1256 | the frame is visible, since Fnext_window skips non-visible frames | |
1257 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1258 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1259 | || (mini && minibuf_level > 0)) |
1260 | switch (type) | |
1261 | { | |
1262 | case GET_BUFFER_WINDOW: | |
7ab12479 JB |
1263 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) |
1264 | return w; | |
1265 | break; | |
1266 | ||
1267 | case GET_LRU_WINDOW: | |
1268 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1269 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
a2db42d6 | 1270 | != FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (w))))) |
7ab12479 | 1271 | break; |
7ab12479 JB |
1272 | /* Ignore dedicated windows and minibuffers. */ |
1273 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1274 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1275 | break; |
265a9e55 | 1276 | if (NILP (best_window) |
7ab12479 JB |
1277 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1278 | > XFASTINT (XWINDOW (w)->use_time))) | |
1279 | best_window = w; | |
1280 | break; | |
1281 | ||
1282 | case DELETE_OTHER_WINDOWS: | |
1283 | if (XWINDOW (w) != XWINDOW (obj)) | |
1284 | Fdelete_window (w); | |
1285 | break; | |
1286 | ||
1287 | case DELETE_BUFFER_WINDOWS: | |
1288 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1289 | { | |
1290 | /* If we're deleting the buffer displayed in the only window | |
44fa5b1e | 1291 | on the frame, find a new buffer to display there. */ |
265a9e55 | 1292 | if (NILP (XWINDOW (w)->parent)) |
7ab12479 | 1293 | { |
12cae7c0 KH |
1294 | Lisp_Object new_buffer; |
1295 | new_buffer = Fother_buffer (obj, Qnil); | |
265a9e55 | 1296 | if (NILP (new_buffer)) |
7ab12479 JB |
1297 | new_buffer |
1298 | = Fget_buffer_create (build_string ("*scratch*")); | |
1299 | Fset_window_buffer (w, new_buffer); | |
d895abb0 RS |
1300 | if (EQ (w, selected_window)) |
1301 | Fset_buffer (XWINDOW (w)->buffer); | |
7ab12479 JB |
1302 | } |
1303 | else | |
1304 | Fdelete_window (w); | |
1305 | } | |
1306 | break; | |
1307 | ||
1308 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1309 | /* Ignore dedicated windows and minibuffers. */ |
1310 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1311 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1312 | break; |
1313 | { | |
1314 | struct window *best_window_ptr = XWINDOW (best_window); | |
1315 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1316 | if (NILP (best_window) |
1317 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1318 | > (XFASTINT (best_window_ptr->height) | |
1319 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1320 | best_window = w; |
1321 | } | |
1322 | break; | |
1323 | ||
1324 | case UNSHOW_BUFFER: | |
1325 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1326 | { | |
1327 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1328 | Lisp_Object another_buffer; |
38ab08d1 | 1329 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1330 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1331 | if (NILP (another_buffer)) |
7ab12479 JB |
1332 | another_buffer |
1333 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1334 | #ifdef MULTI_FRAME |
1335 | /* If this window is dedicated, and in a frame of its own, | |
1336 | kill the frame. */ | |
1337 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1338 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1339 | && other_visible_frames (f)) |
45945a7b RS |
1340 | { |
1341 | /* Skip the other windows on this frame. | |
1342 | There might be one, the minibuffer! */ | |
1343 | if (! EQ (w, last_window)) | |
1344 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1345 | { | |
1346 | /* As we go, check for the end of the loop. | |
1347 | We mustn't start going around a second time. */ | |
1348 | if (EQ (next_window, last_window)) | |
1349 | { | |
1350 | last_window = w; | |
1351 | break; | |
1352 | } | |
1353 | next_window = Fnext_window (next_window, | |
1354 | mini ? Qt : Qnil, | |
1355 | frame_arg); | |
1356 | } | |
1357 | /* Now we can safely delete the frame. */ | |
1358 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1359 | } | |
38ab08d1 RS |
1360 | else |
1361 | #endif | |
1362 | { | |
1363 | /* Otherwise show a different buffer in the window. */ | |
1364 | XWINDOW (w)->dedicated = Qnil; | |
1365 | Fset_window_buffer (w, another_buffer); | |
1366 | if (EQ (w, selected_window)) | |
1367 | Fset_buffer (XWINDOW (w)->buffer); | |
1368 | } | |
7ab12479 JB |
1369 | } |
1370 | break; | |
1371 | } | |
4b206065 JB |
1372 | |
1373 | if (EQ (w, last_window)) | |
1374 | break; | |
1375 | ||
7ab12479 JB |
1376 | w = next_window; |
1377 | } | |
7ab12479 JB |
1378 | |
1379 | return best_window; | |
1380 | } | |
605be8af | 1381 | |
7ab12479 JB |
1382 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1383 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1384 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1385 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1386 | If FRAME is t, search all frames.\n\ |
1387 | If FRAME is nil, search only the selected frame.\n\ | |
1388 | If FRAME is a frame, search only that frame.") | |
1389 | (frame) | |
1390 | Lisp_Object frame; | |
7ab12479 JB |
1391 | { |
1392 | register Lisp_Object w; | |
1393 | /* First try for a window that is full-width */ | |
89bca612 | 1394 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1395 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1396 | return w; |
1397 | /* If none of them, try the rest */ | |
89bca612 | 1398 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1399 | } |
1400 | ||
1401 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1402 | "Return the largest window in area.\n\ | |
89bca612 | 1403 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1404 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1405 | If FRAME is t, search all frames.\n\ |
1406 | If FRAME is nil, search only the selected frame.\n\ | |
1407 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1408 | (frame) |
1409 | Lisp_Object frame; | |
7ab12479 JB |
1410 | { |
1411 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1412 | frame); |
7ab12479 JB |
1413 | } |
1414 | ||
1415 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1416 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1417 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1418 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1419 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1420 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1421 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1422 | (buffer, frame) |
1423 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1424 | { |
1425 | buffer = Fget_buffer (buffer); | |
017b2bad | 1426 | if (BUFFERP (buffer)) |
44fa5b1e | 1427 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1428 | else |
1429 | return Qnil; | |
1430 | } | |
1431 | ||
1432 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1433 | 0, 1, "", | |
44fa5b1e | 1434 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1435 | Only the frame WINDOW is on is affected.\n\ |
1436 | This function tries to reduce display jumps\n\ | |
1437 | by keeping the text previously visible in WINDOW\n\ | |
1438 | in the same place on the frame. Doing this depends on\n\ | |
1439 | the value of (window-start WINDOW), so if calling this function\n\ | |
1440 | in a program gives strange scrolling, make sure the window-start\n\ | |
1441 | value is reasonable when this function is called.") | |
7ab12479 JB |
1442 | (window) |
1443 | Lisp_Object window; | |
1444 | { | |
1445 | struct window *w; | |
00d3d838 | 1446 | int startpos; |
7ab12479 JB |
1447 | int top; |
1448 | ||
265a9e55 | 1449 | if (NILP (window)) |
7ab12479 JB |
1450 | window = selected_window; |
1451 | else | |
605be8af | 1452 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1453 | |
1454 | w = XWINDOW (window); | |
a2b38b3c | 1455 | |
00d3d838 KH |
1456 | startpos = marker_position (w->start); |
1457 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1458 | |
a2b38b3c RS |
1459 | if (MINI_WINDOW_P (w) && top > 0) |
1460 | error ("Can't expand minibuffer to full frame"); | |
1461 | ||
70728a80 | 1462 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1463 | |
00d3d838 KH |
1464 | /* Try to minimize scrolling, by setting the window start to the point |
1465 | will cause the text at the old window start to be at the same place | |
1466 | on the frame. But don't try to do this if the window start is | |
1467 | outside the visible portion (as might happen when the display is | |
1468 | not current, due to typeahead). */ | |
1469 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1470 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1471 | { | |
1472 | struct position pos; | |
1473 | struct buffer *obuf = current_buffer; | |
1474 | ||
1475 | Fset_buffer (w->buffer); | |
1476 | /* This computation used to temporarily move point, but that can | |
1477 | have unwanted side effects due to text properties. */ | |
1478 | pos = *vmotion (startpos, -top, window_internal_width (w) - 1, | |
1479 | XINT (w->hscroll), window); | |
1480 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); | |
1481 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
1482 | || FETCH_CHAR (pos.bufpos - 1) == '\n') ? Qt | |
1483 | : Qnil); | |
1484 | ||
1485 | set_buffer_internal (obuf); | |
1486 | } | |
7ab12479 JB |
1487 | return Qnil; |
1488 | } | |
1489 | ||
1490 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1491 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1492 | "Delete all windows showing BUFFER.\n\ |
1493 | Optional second argument FRAME controls which frames are affected.\n\ | |
1494 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1495 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1496 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1497 | If a frame, delete only windows showing BUFFER in that frame.") |
1498 | (buffer, frame) | |
1499 | Lisp_Object buffer, frame; | |
7ab12479 | 1500 | { |
26f6279d JB |
1501 | #ifdef MULTI_FRAME |
1502 | /* FRAME uses t and nil to mean the opposite of what window_loop | |
1503 | expects. */ | |
1504 | if (! FRAMEP (frame)) | |
1505 | frame = NILP (frame) ? Qt : Qnil; | |
1506 | #else | |
1507 | frame = Qt; | |
1508 | #endif | |
1509 | ||
265a9e55 | 1510 | if (!NILP (buffer)) |
7ab12479 JB |
1511 | { |
1512 | buffer = Fget_buffer (buffer); | |
1513 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1514 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1515 | } |
1516 | return Qnil; | |
1517 | } | |
1518 | ||
1519 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1520 | Sreplace_buffer_in_windows, | |
1521 | 1, 1, "bReplace buffer in windows: ", | |
1522 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1523 | (buffer) | |
1524 | Lisp_Object buffer; | |
1525 | { | |
265a9e55 | 1526 | if (!NILP (buffer)) |
7ab12479 JB |
1527 | { |
1528 | buffer = Fget_buffer (buffer); | |
1529 | CHECK_BUFFER (buffer, 0); | |
1530 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1531 | } | |
1532 | return Qnil; | |
1533 | } | |
1534 | \f | |
1535 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1536 | |
1537 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1538 | might crash Emacs. */ | |
1539 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1540 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1541 | ||
1542 | /* Make sure that window_min_height and window_min_width are | |
1543 | not too small; if they are, set them to safe minima. */ | |
1544 | ||
1545 | static void | |
1546 | check_min_window_sizes () | |
1547 | { | |
1548 | /* Smaller values might permit a crash. */ | |
1549 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1550 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1551 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1552 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1553 | } | |
1554 | ||
1555 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1556 | minimum allowable size. */ | |
605be8af | 1557 | void |
a481b3ea | 1558 | check_frame_size (frame, rows, cols) |
605be8af JB |
1559 | FRAME_PTR frame; |
1560 | int *rows, *cols; | |
a481b3ea | 1561 | { |
628df3bf JB |
1562 | /* For height, we have to see: |
1563 | whether the frame has a minibuffer, | |
1564 | whether it wants a mode line, and | |
1565 | whether it has a menu bar. */ | |
a481b3ea | 1566 | int min_height = |
79f92720 JB |
1567 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1568 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1569 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1570 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1571 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1572 | |
1573 | if (*rows < min_height) | |
1574 | *rows = min_height; | |
1575 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1576 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1577 | } | |
1578 | ||
7ab12479 JB |
1579 | /* Normally the window is deleted if it gets too small. |
1580 | nodelete nonzero means do not do this. | |
1581 | (The caller should check later and do so if appropriate) */ | |
1582 | ||
1583 | set_window_height (window, height, nodelete) | |
1584 | Lisp_Object window; | |
1585 | int height; | |
1586 | int nodelete; | |
1587 | { | |
1588 | register struct window *w = XWINDOW (window); | |
1589 | register struct window *c; | |
1590 | int oheight = XFASTINT (w->height); | |
1591 | int top, pos, lastbot, opos, lastobot; | |
1592 | Lisp_Object child; | |
1593 | ||
a481b3ea JB |
1594 | check_min_window_sizes (); |
1595 | ||
7ab12479 | 1596 | if (!nodelete |
265a9e55 | 1597 | && ! NILP (w->parent) |
7ab12479 JB |
1598 | && height < window_min_height) |
1599 | { | |
1600 | Fdelete_window (window); | |
1601 | return; | |
1602 | } | |
1603 | ||
d834a2e9 | 1604 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1605 | windows_or_buffers_changed++; |
d834a2e9 | 1606 | XSETFASTINT (w->height, height); |
265a9e55 | 1607 | if (!NILP (w->hchild)) |
7ab12479 | 1608 | { |
265a9e55 | 1609 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1610 | { |
1611 | XWINDOW (child)->top = w->top; | |
1612 | set_window_height (child, height, nodelete); | |
1613 | } | |
1614 | } | |
265a9e55 | 1615 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1616 | { |
1617 | lastbot = top = XFASTINT (w->top); | |
1618 | lastobot = 0; | |
265a9e55 | 1619 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1620 | { |
1621 | c = XWINDOW (child); | |
1622 | ||
1623 | opos = lastobot + XFASTINT (c->height); | |
1624 | ||
d834a2e9 | 1625 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1626 | |
1627 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1628 | ||
1629 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1630 | set_window_height (child, pos + top - lastbot, 1); | |
1631 | ||
1632 | /* Now advance child to next window, | |
1633 | and set lastbot if child was not just deleted. */ | |
1634 | lastbot = pos + top; | |
1635 | lastobot = opos; | |
1636 | } | |
1637 | /* Now delete any children that became too small. */ | |
1638 | if (!nodelete) | |
265a9e55 | 1639 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1640 | { |
1641 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1642 | } | |
1643 | } | |
1644 | } | |
1645 | ||
1646 | /* Recursively set width of WINDOW and its inferiors. */ | |
1647 | ||
1648 | set_window_width (window, width, nodelete) | |
1649 | Lisp_Object window; | |
1650 | int width; | |
1651 | int nodelete; | |
1652 | { | |
1653 | register struct window *w = XWINDOW (window); | |
1654 | register struct window *c; | |
1655 | int owidth = XFASTINT (w->width); | |
1656 | int left, pos, lastright, opos, lastoright; | |
1657 | Lisp_Object child; | |
1658 | ||
abdced83 | 1659 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 JB |
1660 | { |
1661 | Fdelete_window (window); | |
1662 | return; | |
1663 | } | |
1664 | ||
d834a2e9 | 1665 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1666 | windows_or_buffers_changed++; |
d834a2e9 | 1667 | XSETFASTINT (w->width, width); |
265a9e55 | 1668 | if (!NILP (w->vchild)) |
7ab12479 | 1669 | { |
265a9e55 | 1670 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1671 | { |
1672 | XWINDOW (child)->left = w->left; | |
1673 | set_window_width (child, width, nodelete); | |
1674 | } | |
1675 | } | |
265a9e55 | 1676 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1677 | { |
1678 | lastright = left = XFASTINT (w->left); | |
1679 | lastoright = 0; | |
265a9e55 | 1680 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1681 | { |
1682 | c = XWINDOW (child); | |
1683 | ||
1684 | opos = lastoright + XFASTINT (c->width); | |
1685 | ||
d834a2e9 | 1686 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1687 | |
1688 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1689 | ||
1690 | /* Inhibit deletion for becoming too small */ | |
1691 | set_window_width (child, pos + left - lastright, 1); | |
1692 | ||
1693 | /* Now advance child to next window, | |
1694 | and set lastright if child was not just deleted. */ | |
1695 | lastright = pos + left, lastoright = opos; | |
1696 | } | |
1697 | /* Delete children that became too small */ | |
1698 | if (!nodelete) | |
265a9e55 | 1699 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1700 | { |
1701 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1702 | } | |
1703 | } | |
1704 | } | |
1705 | \f | |
1d8d96fa | 1706 | int window_select_count; |
7ab12479 JB |
1707 | |
1708 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1709 | "Make WINDOW display BUFFER as its contents.\n\ | |
1710 | BUFFER can be a buffer or buffer name.") | |
1711 | (window, buffer) | |
1712 | register Lisp_Object window, buffer; | |
1713 | { | |
1714 | register Lisp_Object tem; | |
1715 | register struct window *w = decode_window (window); | |
1716 | ||
1717 | buffer = Fget_buffer (buffer); | |
1718 | CHECK_BUFFER (buffer, 1); | |
1719 | ||
265a9e55 | 1720 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1721 | error ("Attempt to display deleted buffer"); |
1722 | ||
1723 | tem = w->buffer; | |
265a9e55 | 1724 | if (NILP (tem)) |
7ab12479 JB |
1725 | error ("Window is deleted"); |
1726 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1727 | is first being set up. */ | |
1728 | { | |
265a9e55 | 1729 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1730 | error ("Window is dedicated to `%s'", |
1731 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1732 | |
1733 | unshow_buffer (w); | |
1734 | } | |
1735 | ||
1736 | w->buffer = buffer; | |
d834a2e9 | 1737 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1738 | w->window_end_valid = Qnil; |
d834a2e9 | 1739 | XSETFASTINT(w->hscroll, 0); |
7ab12479 JB |
1740 | Fset_marker (w->pointm, |
1741 | make_number (BUF_PT (XBUFFER (buffer))), | |
1742 | buffer); | |
1743 | set_marker_restricted (w->start, | |
1744 | make_number (XBUFFER (buffer)->last_window_start), | |
1745 | buffer); | |
1746 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1747 | w->force_start = Qnil; |
d834a2e9 | 1748 | XSETFASTINT (w->last_modified, 0); |
7ab12479 JB |
1749 | windows_or_buffers_changed++; |
1750 | if (EQ (window, selected_window)) | |
1751 | Fset_buffer (buffer); | |
1752 | ||
1753 | return Qnil; | |
1754 | } | |
1755 | ||
1756 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1757 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1758 | The main editor command loop selects the buffer of the selected window\n\ | |
1759 | before each command.") | |
1760 | (window) | |
1761 | register Lisp_Object window; | |
1762 | { | |
1763 | register struct window *w; | |
1764 | register struct window *ow = XWINDOW (selected_window); | |
1765 | ||
605be8af | 1766 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1767 | |
1768 | w = XWINDOW (window); | |
1769 | ||
265a9e55 | 1770 | if (NILP (w->buffer)) |
7ab12479 JB |
1771 | error ("Trying to select deleted window or non-leaf window"); |
1772 | ||
d834a2e9 | 1773 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
1774 | if (EQ (window, selected_window)) |
1775 | return window; | |
1776 | ||
1777 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1778 | ow->buffer); | |
1779 | ||
1780 | selected_window = window; | |
44fa5b1e JB |
1781 | #ifdef MULTI_FRAME |
1782 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) | |
7ab12479 | 1783 | { |
44fa5b1e | 1784 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
1785 | /* Use this rather than Fhandle_switch_frame |
1786 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
1787 | move around in the state where a minibuffer in a separate | |
1788 | frame is active. */ | |
1789 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1790 | } |
1791 | else | |
44fa5b1e | 1792 | selected_frame->selected_window = window; |
7ab12479 JB |
1793 | #endif |
1794 | ||
1795 | record_buffer (w->buffer); | |
1796 | Fset_buffer (w->buffer); | |
1797 | ||
1798 | /* Go to the point recorded in the window. | |
1799 | This is important when the buffer is in more | |
1800 | than one window. It also matters when | |
1801 | redisplay_window has altered point after scrolling, | |
1802 | because it makes the change only in the window. */ | |
1803 | { | |
1804 | register int new_point = marker_position (w->pointm); | |
1805 | if (new_point < BEGV) | |
1806 | SET_PT (BEGV); | |
a9c95e08 | 1807 | else if (new_point > ZV) |
7ab12479 JB |
1808 | SET_PT (ZV); |
1809 | else | |
1810 | SET_PT (new_point); | |
1811 | } | |
1812 | ||
1813 | windows_or_buffers_changed++; | |
1814 | return window; | |
1815 | } | |
1816 | ||
35aaf00c | 1817 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
6648f23a | 1818 | "BDisplay buffer: \nP", |
7ab12479 JB |
1819 | "Make BUFFER appear in some window but don't select it.\n\ |
1820 | BUFFER can be a buffer or a buffer name.\n\ | |
1821 | If BUFFER is shown already in some window, just use that one,\n\ | |
1822 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 1823 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 1824 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
7ab12479 JB |
1825 | Returns the window displaying BUFFER.") |
1826 | (buffer, not_this_window) | |
1827 | register Lisp_Object buffer, not_this_window; | |
1828 | { | |
a90712c2 | 1829 | register Lisp_Object window, tem; |
7ab12479 JB |
1830 | |
1831 | buffer = Fget_buffer (buffer); | |
1832 | CHECK_BUFFER (buffer, 0); | |
1833 | ||
265a9e55 | 1834 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1835 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1836 | ||
265a9e55 | 1837 | if (NILP (not_this_window) |
7ab12479 JB |
1838 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1839 | return selected_window; | |
1840 | ||
c6e73093 | 1841 | #ifdef MULTI_FRAME |
e8edb3ae | 1842 | /* If pop_up_frames, |
f812f9c6 RS |
1843 | look for a window showing BUFFER on any visible or iconified frame. */ |
1844 | window = Fget_buffer_window (buffer, pop_up_frames ? make_number (0) : Qnil); | |
c6e73093 KH |
1845 | #else |
1846 | window = Fget_buffer_window (buffer, Qnil); | |
1847 | #endif | |
265a9e55 JB |
1848 | if (!NILP (window) |
1849 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 1850 | { |
7cab5d2c | 1851 | #ifdef MULTI_FRAME |
f812f9c6 RS |
1852 | if (FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (window))))) |
1853 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7cab5d2c | 1854 | #endif |
f812f9c6 RS |
1855 | return window; |
1856 | } | |
7ab12479 | 1857 | |
a90712c2 RS |
1858 | /* Certain buffer names get special handling. */ |
1859 | if (! NILP (Vspecial_display_function)) | |
1860 | { | |
1861 | tem = Fmember (XBUFFER (buffer)->name, Vspecial_display_buffer_names); | |
1862 | if (!NILP (tem)) | |
1863 | return call1 (Vspecial_display_function, buffer); | |
1864 | ||
0a952b57 RS |
1865 | tem = Fassoc (XBUFFER (buffer)->name, Vspecial_display_buffer_names); |
1866 | if (!NILP (tem)) | |
1867 | return call2 (Vspecial_display_function, buffer, XCONS (tem)->cdr); | |
1868 | ||
a90712c2 | 1869 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCONS (tem)->cdr) |
0a952b57 RS |
1870 | { |
1871 | Lisp_Object car = XCONS (tem)->car; | |
1872 | if (STRINGP (car) | |
1873 | && fast_string_match (car, XBUFFER (buffer)->name) >= 0) | |
1874 | return call1 (Vspecial_display_function, buffer); | |
1875 | else if (CONSP (car) | |
1876 | && STRINGP (XCONS (car)->car) | |
1877 | && fast_string_match (XCONS (car)->car, | |
1878 | XBUFFER (buffer)->name) >= 0) | |
1879 | return call2 (Vspecial_display_function, | |
1880 | buffer, | |
1881 | XCONS (car)->cdr); | |
1882 | } | |
a90712c2 RS |
1883 | } |
1884 | ||
44fa5b1e JB |
1885 | #ifdef MULTI_FRAME |
1886 | /* If there are no frames open that have more than a minibuffer, | |
1887 | we need to create a new frame. */ | |
1888 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 1889 | { |
a90712c2 | 1890 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 1891 | Fset_window_buffer (window, buffer); |
7ab12479 JB |
1892 | return window; |
1893 | } | |
44fa5b1e | 1894 | #endif /* MULTI_FRAME */ |
7ab12479 | 1895 | |
43bad991 | 1896 | if (pop_up_windows |
44fa5b1e JB |
1897 | #ifdef MULTI_FRAME |
1898 | || FRAME_MINIBUF_ONLY_P (selected_frame) | |
cee67da9 RS |
1899 | /* If the current frame is a special display frame, |
1900 | don't try to reuse its windows. */ | |
1901 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 JB |
1902 | #endif |
1903 | ) | |
7ab12479 | 1904 | { |
12cae7c0 KH |
1905 | Lisp_Object frames; |
1906 | ||
1907 | frames = Qnil; | |
44fa5b1e JB |
1908 | #ifdef MULTI_FRAME |
1909 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) | |
74112613 | 1910 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
1911 | #endif |
1912 | /* Don't try to create a window if would get an error */ | |
1913 | if (split_height_threshold < window_min_height << 1) | |
1914 | split_height_threshold = window_min_height << 1; | |
1915 | ||
cee67da9 RS |
1916 | /* Note that both Fget_largest_window and Fget_lru_window |
1917 | ignore minibuffers and dedicated windows. | |
1918 | This means they can return nil. */ | |
7ab12479 | 1919 | |
9f7a8b5d | 1920 | #ifdef MULTI_FRAME |
cee67da9 RS |
1921 | /* If the frame we would try to split cannot be split, |
1922 | try other frames. */ | |
1923 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
1924 | : last_nonminibuf_frame)) | |
1925 | { | |
1926 | /* Try visible frames first. */ | |
1927 | window = Fget_largest_window (Qvisible); | |
1928 | /* If that didn't work, try iconified frames. */ | |
1929 | if (NILP (window)) | |
1930 | window = Fget_largest_window (make_number (0)); | |
1931 | if (NILP (window)) | |
1932 | window = Fget_largest_window (Qt); | |
1933 | } | |
1934 | else | |
9f7a8b5d | 1935 | #endif |
cee67da9 RS |
1936 | window = Fget_largest_window (frames); |
1937 | ||
92cca945 RS |
1938 | /* If we got a tall enough full-width window that can be split, |
1939 | split it. */ | |
265a9e55 | 1940 | if (!NILP (window) |
92cca945 | 1941 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 1942 | && window_height (window) >= split_height_threshold |
535e0b8e JB |
1943 | && (XFASTINT (XWINDOW (window)->width) |
1944 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) | |
7ab12479 JB |
1945 | window = Fsplit_window (window, Qnil, Qnil); |
1946 | else | |
1947 | { | |
1942f68f RS |
1948 | Lisp_Object upper, lower, other; |
1949 | ||
44fa5b1e | 1950 | window = Fget_lru_window (frames); |
92cca945 RS |
1951 | /* If the LRU window is selected, and big enough, |
1952 | and can be split, split it. */ | |
cee67da9 | 1953 | if (!NILP (window) |
92cca945 | 1954 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
1955 | && (EQ (window, selected_window) |
1956 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
1957 | && window_height (window) >= window_min_height << 1) |
1958 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 RS |
1959 | #ifdef MULTI_FRAME |
1960 | /* If Fget_lru_window returned nil, try other approaches. */ | |
1961 | /* Try visible frames first. */ | |
1962 | if (NILP (window)) | |
1963 | window = Fget_largest_window (Qvisible); | |
1964 | /* If that didn't work, try iconified frames. */ | |
1965 | if (NILP (window)) | |
1966 | window = Fget_largest_window (make_number (0)); | |
1967 | /* Try invisible frames. */ | |
1968 | if (NILP (window)) | |
1969 | window = Fget_largest_window (Qt); | |
1970 | /* As a last resort, make a new frame. */ | |
1971 | if (NILP (window)) | |
1972 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1973 | #else | |
1974 | /* As a last resort, use a non minibuffer window. */ | |
1975 | if (NILP (window)) | |
1976 | window = Fframe_first_window (Fselected_frame ()); | |
1977 | #endif | |
1942f68f RS |
1978 | /* If window appears above or below another, |
1979 | even out their heights. */ | |
1980 | if (!NILP (XWINDOW (window)->prev)) | |
1981 | other = upper = XWINDOW (window)->prev, lower = window; | |
1982 | if (!NILP (XWINDOW (window)->next)) | |
1983 | other = lower = XWINDOW (window)->next, upper = window; | |
1984 | if (!NILP (other) | |
1985 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
1986 | && XWINDOW (other)->top != XWINDOW (window)->top | |
1987 | && XWINDOW (other)->height > XWINDOW (window)->height) | |
1988 | { | |
1989 | int total = XWINDOW (other)->height + XWINDOW (window)->height; | |
8d77c0c8 KH |
1990 | Lisp_Object old_selected_window; |
1991 | old_selected_window = selected_window; | |
1942f68f | 1992 | |
8d77c0c8 | 1993 | selected_window = upper; |
1942f68f RS |
1994 | change_window_height (total / 2 - XWINDOW (upper)->height, 0); |
1995 | selected_window = old_selected_window; | |
1996 | } | |
7ab12479 JB |
1997 | } |
1998 | } | |
1999 | else | |
2000 | window = Fget_lru_window (Qnil); | |
2001 | ||
2002 | Fset_window_buffer (window, buffer); | |
2003 | return window; | |
2004 | } | |
2005 | ||
2006 | void | |
2007 | temp_output_buffer_show (buf) | |
2008 | register Lisp_Object buf; | |
2009 | { | |
2010 | register struct buffer *old = current_buffer; | |
2011 | register Lisp_Object window; | |
2012 | register struct window *w; | |
2013 | ||
2014 | Fset_buffer (buf); | |
2015 | XBUFFER (buf)->save_modified = MODIFF; | |
2016 | BEGV = BEG; | |
2017 | ZV = Z; | |
2018 | SET_PT (BEG); | |
2019 | clip_changed = 1; | |
2020 | set_buffer_internal (old); | |
2021 | ||
2022 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2023 | call1 (Vtemp_buffer_show_function, buf); | |
2024 | else | |
2025 | { | |
2026 | window = Fdisplay_buffer (buf, Qnil); | |
2027 | ||
44fa5b1e JB |
2028 | #ifdef MULTI_FRAME |
2029 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) | |
2030 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
2031 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
2032 | Vminibuf_scroll_window = window; |
2033 | w = XWINDOW (window); | |
d834a2e9 | 2034 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
2035 | set_marker_restricted (w->start, make_number (1), buf); |
2036 | set_marker_restricted (w->pointm, make_number (1), buf); | |
2037 | } | |
2038 | } | |
2039 | \f | |
2040 | static | |
2041 | make_dummy_parent (window) | |
2042 | Lisp_Object window; | |
2043 | { | |
cffec418 | 2044 | Lisp_Object new; |
7ab12479 | 2045 | register struct window *o, *p; |
cffec418 KH |
2046 | register struct Lisp_Vector *vec; |
2047 | int i; | |
7ab12479 | 2048 | |
cffec418 KH |
2049 | o = XWINDOW (window); |
2050 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2051 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2052 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2053 | vec->size = VECSIZE (struct window); | |
2054 | p = (struct window *)vec; | |
2055 | XSETWINDOW (new, p); | |
7ab12479 | 2056 | |
d834a2e9 | 2057 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2058 | |
2059 | /* Put new into window structure in place of window */ | |
2060 | replace_window (window, new); | |
2061 | ||
2062 | o->next = Qnil; | |
2063 | o->prev = Qnil; | |
2064 | o->vchild = Qnil; | |
2065 | o->hchild = Qnil; | |
2066 | o->parent = new; | |
2067 | ||
2068 | p->start = Qnil; | |
2069 | p->pointm = Qnil; | |
2070 | p->buffer = Qnil; | |
2071 | } | |
2072 | ||
2073 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2074 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2075 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
2076 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
2077 | and put SIZE columns in the first of the pair.") | |
2078 | (window, chsize, horflag) | |
2079 | Lisp_Object window, chsize, horflag; | |
2080 | { | |
2081 | register Lisp_Object new; | |
2082 | register struct window *o, *p; | |
2083 | register int size; | |
2084 | ||
265a9e55 | 2085 | if (NILP (window)) |
7ab12479 JB |
2086 | window = selected_window; |
2087 | else | |
605be8af | 2088 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2089 | |
2090 | o = XWINDOW (window); | |
2091 | ||
265a9e55 | 2092 | if (NILP (chsize)) |
7ab12479 | 2093 | { |
265a9e55 | 2094 | if (!NILP (horflag)) |
7ab12479 JB |
2095 | /* Round odd size up, since this is for the left-hand window, |
2096 | and it will lose a column for the separators. */ | |
2097 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
2098 | else | |
2099 | size = XFASTINT (o->height) >> 1; | |
2100 | } | |
2101 | else | |
2102 | { | |
2103 | CHECK_NUMBER (chsize, 1); | |
2104 | size = XINT (chsize); | |
2105 | } | |
2106 | ||
2107 | if (MINI_WINDOW_P (o)) | |
2108 | error ("Attempt to split minibuffer window"); | |
44fa5b1e JB |
2109 | else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
2110 | error ("Attempt to split unsplittable frame"); | |
7ab12479 | 2111 | |
a481b3ea | 2112 | check_min_window_sizes (); |
7ab12479 | 2113 | |
265a9e55 | 2114 | if (NILP (horflag)) |
7ab12479 JB |
2115 | { |
2116 | if (size < window_min_height | |
2117 | || size + window_min_height > XFASTINT (o->height)) | |
2118 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
2119 | if (NILP (o->parent) |
2120 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2121 | { |
2122 | make_dummy_parent (window); | |
2123 | new = o->parent; | |
2124 | XWINDOW (new)->vchild = window; | |
2125 | } | |
2126 | } | |
2127 | else | |
2128 | { | |
2129 | if (size < window_min_width | |
2130 | || size + window_min_width > XFASTINT (o->width)) | |
2131 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
2132 | if (NILP (o->parent) |
2133 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2134 | { |
2135 | make_dummy_parent (window); | |
2136 | new = o->parent; | |
2137 | XWINDOW (new)->hchild = window; | |
2138 | } | |
2139 | } | |
2140 | ||
2141 | /* Now we know that window's parent is a vertical combination | |
2142 | if we are dividing vertically, or a horizontal combination | |
2143 | if we are making side-by-side windows */ | |
2144 | ||
2145 | windows_or_buffers_changed++; | |
2146 | new = make_window (); | |
2147 | p = XWINDOW (new); | |
2148 | ||
44fa5b1e | 2149 | p->frame = o->frame; |
7ab12479 | 2150 | p->next = o->next; |
265a9e55 | 2151 | if (!NILP (p->next)) |
7ab12479 JB |
2152 | XWINDOW (p->next)->prev = new; |
2153 | p->prev = window; | |
2154 | o->next = new; | |
2155 | p->parent = o->parent; | |
2156 | p->buffer = Qt; | |
2157 | ||
2158 | Fset_window_buffer (new, o->buffer); | |
2159 | ||
44fa5b1e | 2160 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2161 | |
265a9e55 | 2162 | if (!NILP (horflag)) |
7ab12479 JB |
2163 | { |
2164 | p->height = o->height; | |
2165 | p->top = o->top; | |
d834a2e9 KH |
2166 | XSETFASTINT (p->width, XFASTINT (o->width) - size); |
2167 | XSETFASTINT (o->width, size); | |
2168 | XSETFASTINT (p->left, XFASTINT (o->left) + size); | |
7ab12479 JB |
2169 | } |
2170 | else | |
2171 | { | |
2172 | p->left = o->left; | |
2173 | p->width = o->width; | |
d834a2e9 KH |
2174 | XSETFASTINT (p->height, XFASTINT (o->height) - size); |
2175 | XSETFASTINT (o->height, size); | |
2176 | XSETFASTINT (p->top, XFASTINT (o->top) + size); | |
7ab12479 JB |
2177 | } |
2178 | ||
2179 | return new; | |
2180 | } | |
2181 | \f | |
2182 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2183 | "Make current window ARG lines bigger.\n\ | |
2184 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
2185 | (n, side) | |
2186 | register Lisp_Object n, side; | |
2187 | { | |
2188 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2189 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
2190 | return Qnil; |
2191 | } | |
2192 | ||
2193 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2194 | "Make current window ARG lines smaller.\n\ | |
2195 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
2196 | (n, side) | |
2197 | register Lisp_Object n, side; | |
2198 | { | |
2199 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2200 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
2201 | return Qnil; |
2202 | } | |
2203 | ||
2204 | int | |
2205 | window_height (window) | |
2206 | Lisp_Object window; | |
2207 | { | |
2208 | register struct window *p = XWINDOW (window); | |
2209 | return XFASTINT (p->height); | |
2210 | } | |
2211 | ||
2212 | int | |
2213 | window_width (window) | |
2214 | Lisp_Object window; | |
2215 | { | |
2216 | register struct window *p = XWINDOW (window); | |
2217 | return XFASTINT (p->width); | |
2218 | } | |
2219 | ||
05c2896a JB |
2220 | #define MINSIZE(w) \ |
2221 | (widthflag \ | |
2222 | ? window_min_width \ | |
2223 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2224 | |
2225 | #define CURBEG(w) \ | |
05c2896a | 2226 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2227 | |
2228 | #define CURSIZE(w) \ | |
05c2896a | 2229 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2230 | |
2231 | /* Unlike set_window_height, this function | |
2232 | also changes the heights of the siblings so as to | |
2233 | keep everything consistent. */ | |
2234 | ||
2235 | change_window_height (delta, widthflag) | |
2236 | register int delta; | |
2237 | int widthflag; | |
2238 | { | |
2239 | register Lisp_Object parent; | |
2240 | Lisp_Object window; | |
2241 | register struct window *p; | |
2242 | int *sizep; | |
2243 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2244 | register int (*setsizefun) () = (widthflag | |
2245 | ? set_window_width | |
2246 | : set_window_height); | |
2247 | ||
a481b3ea | 2248 | check_min_window_sizes (); |
7ab12479 JB |
2249 | |
2250 | window = selected_window; | |
2251 | while (1) | |
2252 | { | |
2253 | p = XWINDOW (window); | |
2254 | parent = p->parent; | |
265a9e55 | 2255 | if (NILP (parent)) |
7ab12479 JB |
2256 | { |
2257 | if (widthflag) | |
2258 | error ("No other window to side of this one"); | |
2259 | break; | |
2260 | } | |
265a9e55 JB |
2261 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2262 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2263 | break; |
2264 | window = parent; | |
2265 | } | |
2266 | ||
05c2896a | 2267 | sizep = &CURSIZE (window); |
7ab12479 | 2268 | |
7ab12479 JB |
2269 | { |
2270 | register int maxdelta; | |
7ab12479 | 2271 | |
265a9e55 JB |
2272 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2273 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2274 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2275 | /* This is a frame with only one window, a minibuffer-only |
2276 | or a minibufferless frame. */ | |
d5783c40 | 2277 | : (delta = 0)); |
7ab12479 JB |
2278 | |
2279 | if (delta > maxdelta) | |
2280 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2281 | the full frame, or make the only window aside from the |
2282 | minibuffer the full frame. */ | |
7ab12479 | 2283 | delta = maxdelta; |
6b54027b | 2284 | } |
d5783c40 | 2285 | |
6b54027b RS |
2286 | if (*sizep + delta < MINSIZE (window)) |
2287 | { | |
2288 | Fdelete_window (window); | |
d5783c40 | 2289 | return; |
6b54027b RS |
2290 | } |
2291 | ||
2292 | if (delta == 0) | |
2293 | return; | |
7ab12479 | 2294 | |
6b54027b RS |
2295 | if (!NILP (p->next) |
2296 | && (*sizefun) (p->next) - delta >= MINSIZE (p->next)) | |
7ab12479 JB |
2297 | { |
2298 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
2299 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 2300 | CURBEG (p->next) += delta; |
7ab12479 JB |
2301 | /* This does not change size of p->next, |
2302 | but it propagates the new top edge to its children */ | |
2303 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
2304 | } | |
6b54027b RS |
2305 | else if (!NILP (p->prev) |
2306 | && (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) | |
7ab12479 JB |
2307 | { |
2308 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 2309 | CURBEG (window) -= delta; |
7ab12479 JB |
2310 | (*setsizefun) (window, *sizep + delta, 0); |
2311 | } | |
2312 | else | |
2313 | { | |
2314 | register int delta1; | |
2315 | register int opht = (*sizefun) (parent); | |
2316 | ||
2317 | /* If trying to grow this window to or beyond size of the parent, | |
2318 | make delta1 so big that, on shrinking back down, | |
2319 | all the siblings end up with less than one line and are deleted. */ | |
2320 | if (opht <= *sizep + delta) | |
2321 | delta1 = opht * opht * 2; | |
2322 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2323 | lines to this window and to the parent, and then shrink | |
2324 | the parent back to its original size, the new proportional | |
2325 | size of this window will increase by delta. */ | |
2326 | else | |
2327 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2328 | ||
2329 | /* Add delta1 lines or columns to this window, and to the parent, | |
2330 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2331 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2332 | (*setsizefun) (window, *sizep + delta1, 0); |
2333 | ||
2334 | /* Squeeze out delta1 lines or columns from our parent, | |
2335 | shriking this window and siblings proportionately. | |
2336 | This brings parent back to correct size. | |
2337 | Delta1 was calculated so this makes this window the desired size, | |
2338 | taking it all out of the siblings. */ | |
2339 | (*setsizefun) (parent, opht, 0); | |
2340 | } | |
2341 | ||
d834a2e9 | 2342 | XSETFASTINT (p->last_modified, 0); |
7ab12479 JB |
2343 | } |
2344 | #undef MINSIZE | |
2345 | #undef CURBEG | |
2346 | #undef CURSIZE | |
2347 | ||
2348 | \f | |
2349 | /* Return number of lines of text (not counting mode line) in W. */ | |
2350 | ||
2351 | int | |
2352 | window_internal_height (w) | |
2353 | struct window *w; | |
2354 | { | |
2355 | int ht = XFASTINT (w->height); | |
2356 | ||
2357 | if (MINI_WINDOW_P (w)) | |
2358 | return ht; | |
2359 | ||
265a9e55 JB |
2360 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2361 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2362 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2363 | return ht - 1; |
2364 | ||
2365 | return ht; | |
2366 | } | |
2367 | ||
535e0b8e JB |
2368 | |
2369 | /* Return the number of columns in W. | |
a3c87d4e | 2370 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2371 | separating W from the sibling to its right. */ |
2372 | int | |
2373 | window_internal_width (w) | |
2374 | struct window *w; | |
2375 | { | |
2376 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
2377 | int left = XINT (w->left); | |
2378 | int width = XINT (w->width); | |
2379 | ||
2380 | /* If this window is flush against the right edge of the frame, its | |
2381 | internal width is its full width. */ | |
2382 | if (left + width >= FRAME_WIDTH (f)) | |
2383 | return width; | |
2384 | ||
2385 | /* If we are not flush right, then our rightmost columns are | |
2386 | occupied by some sort of separator. */ | |
2387 | ||
a3c87d4e JB |
2388 | /* Scroll bars occupy a few columns. */ |
2389 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2390 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2391 | |
2392 | /* The column of `|' characters separating side-by-side windows | |
2393 | occupies one column only. */ | |
2394 | return width - 1; | |
2395 | } | |
2396 | ||
2397 | ||
7ab12479 JB |
2398 | /* Scroll contents of window WINDOW up N lines. */ |
2399 | ||
2400 | void | |
f8026fd8 | 2401 | window_scroll (window, n, noerror) |
7ab12479 JB |
2402 | Lisp_Object window; |
2403 | int n; | |
f8026fd8 | 2404 | int noerror; |
7ab12479 JB |
2405 | { |
2406 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2407 | register int opoint = PT; |
7ab12479 JB |
2408 | register int pos; |
2409 | register int ht = window_internal_height (w); | |
2410 | register Lisp_Object tem; | |
2411 | int lose; | |
2412 | Lisp_Object bolp, nmoved; | |
2413 | ||
d834a2e9 | 2414 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2415 | tem = Fpos_visible_in_window_p (tem, window); |
2416 | ||
265a9e55 | 2417 | if (NILP (tem)) |
7ab12479 | 2418 | { |
cd2be1dd | 2419 | Fvertical_motion (make_number (- (ht / 2)), window); |
d834a2e9 | 2420 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2421 | Fset_marker (w->start, tem, w->buffer); |
2422 | w->force_start = Qt; | |
2423 | } | |
2424 | ||
2425 | SET_PT (marker_position (w->start)); | |
5ce7b543 | 2426 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2427 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2428 | pos = PT; |
7ab12479 JB |
2429 | bolp = Fbolp (); |
2430 | SET_PT (opoint); | |
2431 | ||
2432 | if (lose) | |
f8026fd8 JB |
2433 | { |
2434 | if (noerror) | |
2435 | return; | |
2436 | else | |
2437 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2438 | } | |
7ab12479 JB |
2439 | |
2440 | if (pos < ZV) | |
7ab12479 JB |
2441 | { |
2442 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2443 | w->start_at_line_beg = bolp; | |
2444 | w->update_mode_line = Qt; | |
d834a2e9 | 2445 | XSETFASTINT (w->last_modified, 0); |
7ab12479 JB |
2446 | if (pos > opoint) |
2447 | SET_PT (pos); | |
2448 | if (n < 0) | |
2449 | { | |
2450 | SET_PT (pos); | |
540b6aa0 | 2451 | tem = Fvertical_motion (make_number (ht), window); |
5ce7b543 | 2452 | if (PT > opoint || XFASTINT (tem) < ht) |
7ab12479 JB |
2453 | SET_PT (opoint); |
2454 | else | |
540b6aa0 | 2455 | Fvertical_motion (make_number (-1), window); |
7ab12479 JB |
2456 | } |
2457 | } | |
2458 | else | |
f8026fd8 JB |
2459 | { |
2460 | if (noerror) | |
2461 | return; | |
2462 | else | |
2463 | Fsignal (Qend_of_buffer, Qnil); | |
2464 | } | |
7ab12479 JB |
2465 | } |
2466 | \f | |
2467 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2468 | ||
2469 | static void | |
2470 | scroll_command (n, direction) | |
2471 | register Lisp_Object n; | |
2472 | int direction; | |
2473 | { | |
2474 | register int defalt; | |
2475 | int count = specpdl_ptr - specpdl; | |
2476 | ||
95605e15 JB |
2477 | /* If selected window's buffer isn't current, make it current for the moment. |
2478 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2479 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2480 | { |
2481 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2482 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2483 | } | |
7ab12479 JB |
2484 | |
2485 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2486 | - next_screen_context_lines); | |
2487 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2488 | ||
265a9e55 | 2489 | if (NILP (n)) |
f8026fd8 | 2490 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2491 | else if (EQ (n, Qminus)) |
f8026fd8 | 2492 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2493 | else |
2494 | { | |
2495 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2496 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2497 | } |
95605e15 JB |
2498 | |
2499 | unbind_to (count, Qnil); | |
7ab12479 JB |
2500 | } |
2501 | ||
2502 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2503 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2504 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2505 | Negative ARG means scroll downward.\n\ |
7ab12479 JB |
2506 | When calling from a program, supply a number as argument or nil.") |
2507 | (n) | |
2508 | Lisp_Object n; | |
2509 | { | |
2510 | scroll_command (n, 1); | |
2511 | return Qnil; | |
2512 | } | |
2513 | ||
2514 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2515 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2516 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2517 | Negative ARG means scroll upward.\n\ |
7ab12479 JB |
2518 | When calling from a program, supply a number as argument or nil.") |
2519 | (n) | |
2520 | Lisp_Object n; | |
2521 | { | |
2522 | scroll_command (n, -1); | |
2523 | return Qnil; | |
2524 | } | |
ccd0664b RS |
2525 | \f |
2526 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
2527 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 2528 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
2529 | specifies the window.\n\ |
2530 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
2531 | showing that buffer is used.") | |
eb16ec06 | 2532 | () |
7ab12479 | 2533 | { |
ccd0664b | 2534 | Lisp_Object window; |
7ab12479 JB |
2535 | |
2536 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2537 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2538 | window = Vminibuf_scroll_window; |
2539 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2540 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2541 | { |
2542 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2543 | if (NILP (window)) |
7ab12479 JB |
2544 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2545 | } | |
2546 | else | |
dbc4e1c1 JB |
2547 | { |
2548 | /* Nothing specified; look for a neighboring window on the same | |
2549 | frame. */ | |
2550 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2551 | ||
2552 | if (EQ (window, selected_window)) | |
2553 | /* That didn't get us anywhere; look for a window on another | |
2554 | visible frame. */ | |
2555 | do | |
2556 | window = Fnext_window (window, Qnil, Qt); | |
2557 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2558 | && ! EQ (window, selected_window)); | |
2559 | } | |
2560 | ||
605be8af | 2561 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2562 | |
2563 | if (EQ (window, selected_window)) | |
2564 | error ("There is no other window"); | |
2565 | ||
ccd0664b RS |
2566 | return window; |
2567 | } | |
2568 | ||
2569 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2570 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
2571 | The next window is the one below the current one; or the one at the top\n\ | |
2572 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
2573 | When calling from a program, supply a number as argument or nil.\n\ | |
2574 | \n\ | |
2575 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
2576 | specifies the window to scroll.\n\ | |
2577 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2578 | showing that buffer, popping the buffer up if necessary.") | |
2579 | (n) | |
2580 | register Lisp_Object n; | |
2581 | { | |
2582 | register Lisp_Object window; | |
2583 | register int ht; | |
2584 | register struct window *w; | |
2585 | register int count = specpdl_ptr - specpdl; | |
2586 | ||
2587 | window = Fother_window_for_scrolling (); | |
2588 | ||
7ab12479 JB |
2589 | w = XWINDOW (window); |
2590 | ht = window_internal_height (w); | |
2591 | ||
2592 | /* Don't screw up if window_scroll gets an error. */ | |
2593 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2594 | ||
2595 | Fset_buffer (w->buffer); | |
2596 | SET_PT (marker_position (w->pointm)); | |
2597 | ||
265a9e55 | 2598 | if (NILP (n)) |
f8026fd8 | 2599 | window_scroll (window, ht - next_screen_context_lines, 1); |
7ab12479 | 2600 | else if (EQ (n, Qminus)) |
f8026fd8 | 2601 | window_scroll (window, next_screen_context_lines - ht, 1); |
7ab12479 JB |
2602 | else |
2603 | { | |
017b2bad | 2604 | if (CONSP (n)) |
7ab12479 JB |
2605 | n = Fcar (n); |
2606 | CHECK_NUMBER (n, 0); | |
f8026fd8 | 2607 | window_scroll (window, XINT (n), 1); |
7ab12479 JB |
2608 | } |
2609 | ||
5ce7b543 | 2610 | Fset_marker (w->pointm, make_number (PT), Qnil); |
f4e7b2c2 | 2611 | unbind_to (count, Qnil); |
7ab12479 JB |
2612 | |
2613 | return Qnil; | |
2614 | } | |
2615 | \f | |
644b477c | 2616 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
2617 | "Scroll selected window display ARG columns left.\n\ |
2618 | Default for ARG is window width minus 2.") | |
2619 | (arg) | |
2620 | register Lisp_Object arg; | |
2621 | { | |
2622 | ||
265a9e55 | 2623 | if (NILP (arg)) |
d834a2e9 | 2624 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2625 | else |
2626 | arg = Fprefix_numeric_value (arg); | |
2627 | ||
2628 | return | |
2629 | Fset_window_hscroll (selected_window, | |
2630 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2631 | + XINT (arg))); | |
2632 | } | |
2633 | ||
644b477c | 2634 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
2635 | "Scroll selected window display ARG columns right.\n\ |
2636 | Default for ARG is window width minus 2.") | |
2637 | (arg) | |
2638 | register Lisp_Object arg; | |
2639 | { | |
265a9e55 | 2640 | if (NILP (arg)) |
d834a2e9 | 2641 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2642 | else |
2643 | arg = Fprefix_numeric_value (arg); | |
2644 | ||
2645 | return | |
2646 | Fset_window_hscroll (selected_window, | |
2647 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2648 | - XINT (arg))); | |
2649 | } | |
2650 | ||
2651 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2652 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2653 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e JB |
2654 | Just C-u as prefix means put point in the center of the window.\n\ |
2655 | No arg (i.e., it is nil) erases the entire frame and then\n\ | |
2656 | redraws with point in the center of the current window.") | |
7ab12479 JB |
2657 | (n) |
2658 | register Lisp_Object n; | |
2659 | { | |
2660 | register struct window *w = XWINDOW (selected_window); | |
2661 | register int ht = window_internal_height (w); | |
113d9015 | 2662 | struct position pos; |
540b6aa0 | 2663 | Lisp_Object window; |
7ab12479 | 2664 | |
265a9e55 | 2665 | if (NILP (n)) |
7ab12479 | 2666 | { |
44fa5b1e | 2667 | extern int frame_garbaged; |
7ab12479 | 2668 | |
44fa5b1e | 2669 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
d834a2e9 | 2670 | XSETFASTINT (n, ht / 2); |
7ab12479 | 2671 | } |
017b2bad | 2672 | else if (CONSP (n)) /* Just C-u. */ |
7ab12479 | 2673 | { |
d834a2e9 | 2674 | XSETFASTINT (n, ht / 2); |
7ab12479 JB |
2675 | } |
2676 | else | |
2677 | { | |
2678 | n = Fprefix_numeric_value (n); | |
2679 | CHECK_NUMBER (n, 0); | |
2680 | } | |
2681 | ||
2682 | if (XINT (n) < 0) | |
2683 | XSETINT (n, XINT (n) + ht); | |
2684 | ||
74112613 | 2685 | XSETWINDOW (window, w); |
113d9015 KH |
2686 | pos = *vmotion (point, - XINT (n), window_internal_width (w) - 1, |
2687 | XINT (w->hscroll), window); | |
7ab12479 | 2688 | |
113d9015 KH |
2689 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
2690 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
2691 | || FETCH_CHAR (pos.bufpos - 1) == '\n') | |
2692 | ? Qt : Qnil); | |
7ab12479 JB |
2693 | w->force_start = Qt; |
2694 | ||
2695 | return Qnil; | |
2696 | } | |
2697 | \f | |
2698 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2699 | 1, 1, "P", | |
2700 | "Position point relative to window.\n\ | |
19e3bf0a | 2701 | With no argument, position point at center of window.\n\ |
44fa5b1e | 2702 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2703 | negative means relative to bottom of window.") |
2704 | (arg) | |
2705 | register Lisp_Object arg; | |
2706 | { | |
2707 | register struct window *w = XWINDOW (selected_window); | |
2708 | register int height = window_internal_height (w); | |
2709 | register int start; | |
540b6aa0 | 2710 | Lisp_Object window; |
7ab12479 | 2711 | |
265a9e55 | 2712 | if (NILP (arg)) |
d834a2e9 | 2713 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
2714 | else |
2715 | { | |
2716 | arg = Fprefix_numeric_value (arg); | |
2717 | if (XINT (arg) < 0) | |
2718 | XSETINT (arg, XINT (arg) + height); | |
2719 | } | |
2720 | ||
2721 | start = marker_position (w->start); | |
74112613 | 2722 | XSETWINDOW (window, w); |
7ab12479 JB |
2723 | if (start < BEGV || start > ZV) |
2724 | { | |
cd2be1dd | 2725 | Fvertical_motion (make_number (- (height / 2)), window); |
5ce7b543 | 2726 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
2727 | w->start_at_line_beg = Fbolp (); |
2728 | w->force_start = Qt; | |
2729 | } | |
2730 | else | |
2731 | SET_PT (start); | |
2732 | ||
540b6aa0 | 2733 | return Fvertical_motion (arg, window); |
7ab12479 JB |
2734 | } |
2735 | \f | |
2736 | struct save_window_data | |
2737 | { | |
2738 | int size_from_Lisp_Vector_struct; | |
2739 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
8f6ea2e9 | 2740 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 2741 | Lisp_Object selected_frame; |
7ab12479 JB |
2742 | Lisp_Object current_window; |
2743 | Lisp_Object current_buffer; | |
2744 | Lisp_Object minibuf_scroll_window; | |
2745 | Lisp_Object root_window; | |
bdc727bf | 2746 | Lisp_Object focus_frame; |
756b6edc RS |
2747 | /* Record the values of window-min-width and window-min-height |
2748 | so that window sizes remain consistent with them. */ | |
2749 | Lisp_Object min_width, min_height; | |
7ab12479 JB |
2750 | /* A vector, interpreted as a struct saved_window */ |
2751 | Lisp_Object saved_windows; | |
2752 | }; | |
ff06df24 | 2753 | |
7ab12479 JB |
2754 | /* This is saved as a Lisp_Vector */ |
2755 | struct saved_window | |
2756 | { | |
2757 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2758 | int size_from_Lisp_Vector_struct; | |
2759 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2760 | ||
2761 | Lisp_Object window; | |
2762 | Lisp_Object buffer, start, pointm, mark; | |
2763 | Lisp_Object left, top, width, height, hscroll; | |
2764 | Lisp_Object parent, prev; | |
2765 | Lisp_Object start_at_line_beg; | |
2766 | Lisp_Object display_table; | |
2767 | }; | |
2768 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2769 | ||
2770 | #define SAVED_WINDOW_N(swv,n) \ | |
2771 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2772 | ||
2773 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2774 | "T if OBJECT is a window-configration object.") | |
2775 | (obj) | |
2776 | Lisp_Object obj; | |
2777 | { | |
017b2bad | 2778 | if (WINDOW_CONFIGURATIONP (obj)) |
7ab12479 JB |
2779 | return Qt; |
2780 | return Qnil; | |
2781 | } | |
2782 | ||
2783 | ||
d5b2799e RS |
2784 | DEFUN ("set-window-configuration", Fset_window_configuration, |
2785 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
2786 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
2787 | CONFIGURATION must be a value previously returned\n\ | |
2788 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
2789 | (configuration) |
2790 | Lisp_Object configuration; | |
7ab12479 | 2791 | { |
7ab12479 JB |
2792 | register struct save_window_data *data; |
2793 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 2794 | Lisp_Object new_current_buffer; |
fd482be5 | 2795 | Lisp_Object frame; |
44fa5b1e | 2796 | FRAME_PTR f; |
7ab12479 | 2797 | |
017b2bad | 2798 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 2799 | { |
2f83aebe JB |
2800 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
2801 | configuration); | |
7ab12479 JB |
2802 | } |
2803 | ||
2f83aebe | 2804 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
2805 | saved_windows = XVECTOR (data->saved_windows); |
2806 | ||
7ab12479 | 2807 | new_current_buffer = data->current_buffer; |
265a9e55 | 2808 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2809 | new_current_buffer = Qnil; |
2810 | ||
fd482be5 JB |
2811 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
2812 | f = XFRAME (frame); | |
9ace597f | 2813 | |
fd482be5 JB |
2814 | /* If f is a dead frame, don't bother rebuilding its window tree. |
2815 | However, there is other stuff we should still try to do below. */ | |
2816 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 2817 | { |
fd482be5 JB |
2818 | register struct window *w; |
2819 | register struct saved_window *p; | |
2820 | int k; | |
2821 | ||
2822 | /* If the frame has been resized since this window configuration was | |
2823 | made, we change the frame to the size specified in the | |
2824 | configuration, restore the configuration, and then resize it | |
2825 | back. We keep track of the prevailing height in these variables. */ | |
2826 | int previous_frame_height = FRAME_HEIGHT (f); | |
2827 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 2828 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
2829 | |
2830 | if (XFASTINT (data->frame_height) != previous_frame_height | |
2831 | || XFASTINT (data->frame_width) != previous_frame_width) | |
2832 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
217f2871 | 2833 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
2834 | if (XFASTINT (data->frame_menu_bar_lines) |
2835 | != previous_frame_menu_bar_lines) | |
2836 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
217f2871 | 2837 | #endif |
fd482be5 JB |
2838 | |
2839 | windows_or_buffers_changed++; | |
2840 | ||
756b6edc RS |
2841 | /* Temporarily avoid any problems with windows that are smaller |
2842 | than they are supposed to be. */ | |
2843 | window_min_height = 1; | |
2844 | window_min_width = 1; | |
2845 | ||
fd482be5 JB |
2846 | /* Kludge Alert! |
2847 | Mark all windows now on frame as "deleted". | |
2848 | Restoring the new configuration "undeletes" any that are in it. | |
2849 | ||
2850 | Save their current buffers in their height fields, since we may | |
2851 | need it later, if a buffer saved in the configuration is now | |
2852 | dead. */ | |
2853 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
2854 | ||
2855 | for (k = 0; k < saved_windows->size; k++) | |
2856 | { | |
2857 | p = SAVED_WINDOW_N (saved_windows, k); | |
2858 | w = XWINDOW (p->window); | |
2859 | w->next = Qnil; | |
7ab12479 | 2860 | |
fd482be5 JB |
2861 | if (!NILP (p->parent)) |
2862 | w->parent = SAVED_WINDOW_N (saved_windows, | |
2863 | XFASTINT (p->parent))->window; | |
2864 | else | |
2865 | w->parent = Qnil; | |
7ab12479 | 2866 | |
fd482be5 | 2867 | if (!NILP (p->prev)) |
7ab12479 | 2868 | { |
fd482be5 JB |
2869 | w->prev = SAVED_WINDOW_N (saved_windows, |
2870 | XFASTINT (p->prev))->window; | |
2871 | XWINDOW (w->prev)->next = p->window; | |
2872 | } | |
2873 | else | |
2874 | { | |
2875 | w->prev = Qnil; | |
2876 | if (!NILP (w->parent)) | |
2877 | { | |
2878 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
2879 | { | |
2880 | XWINDOW (w->parent)->vchild = p->window; | |
2881 | XWINDOW (w->parent)->hchild = Qnil; | |
2882 | } | |
2883 | else | |
2884 | { | |
2885 | XWINDOW (w->parent)->hchild = p->window; | |
2886 | XWINDOW (w->parent)->vchild = Qnil; | |
2887 | } | |
2888 | } | |
2889 | } | |
2890 | ||
2891 | /* If we squirreled away the buffer in the window's height, | |
2892 | restore it now. */ | |
017b2bad | 2893 | if (BUFFERP (w->height)) |
fd482be5 JB |
2894 | w->buffer = w->height; |
2895 | w->left = p->left; | |
2896 | w->top = p->top; | |
2897 | w->width = p->width; | |
2898 | w->height = p->height; | |
2899 | w->hscroll = p->hscroll; | |
2900 | w->display_table = p->display_table; | |
d834a2e9 | 2901 | XSETFASTINT (w->last_modified, 0); |
fd482be5 JB |
2902 | |
2903 | /* Reinstall the saved buffer and pointers into it. */ | |
2904 | if (NILP (p->buffer)) | |
2905 | w->buffer = p->buffer; | |
2906 | else | |
2907 | { | |
2908 | if (!NILP (XBUFFER (p->buffer)->name)) | |
2909 | /* If saved buffer is alive, install it. */ | |
2910 | { | |
2911 | w->buffer = p->buffer; | |
2912 | w->start_at_line_beg = p->start_at_line_beg; | |
2913 | set_marker_restricted (w->start, | |
2914 | Fmarker_position (p->start), | |
2915 | w->buffer); | |
2916 | set_marker_restricted (w->pointm, | |
2917 | Fmarker_position (p->pointm), | |
2918 | w->buffer); | |
2919 | Fset_marker (XBUFFER (w->buffer)->mark, | |
2920 | Fmarker_position (p->mark), w->buffer); | |
2921 | ||
2922 | /* As documented in Fcurrent_window_configuration, don't | |
2923 | save the location of point in the buffer which was current | |
2924 | when the window configuration was recorded. */ | |
6b54027b RS |
2925 | if (!EQ (p->buffer, new_current_buffer) |
2926 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
2927 | Fgoto_char (w->pointm); |
2928 | } | |
52a68e98 RS |
2929 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
2930 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 2931 | { |
fd482be5 JB |
2932 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
2933 | /* This will set the markers to beginning of visible | |
2934 | range. */ | |
2935 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2936 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
2937 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
2938 | } |
2939 | else | |
fd482be5 | 2940 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 2941 | are real. */ |
7ab12479 | 2942 | { |
fd482be5 JB |
2943 | /* Set window markers at start of visible range. */ |
2944 | if (XMARKER (w->start)->buffer == 0) | |
2945 | set_marker_restricted (w->start, make_number (0), | |
2946 | w->buffer); | |
2947 | if (XMARKER (w->pointm)->buffer == 0) | |
2948 | set_marker_restricted (w->pointm, | |
2949 | (make_number | |
2950 | (BUF_PT (XBUFFER (w->buffer)))), | |
2951 | w->buffer); | |
2952 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
2953 | } |
2954 | } | |
2955 | } | |
9ace597f | 2956 | |
fd482be5 JB |
2957 | FRAME_ROOT_WINDOW (f) = data->root_window; |
2958 | Fselect_window (data->current_window); | |
7ab12479 | 2959 | |
fd482be5 | 2960 | #ifdef MULTI_FRAME |
db269683 | 2961 | if (NILP (data->focus_frame) |
017b2bad | 2962 | || (FRAMEP (data->focus_frame) |
db269683 JB |
2963 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
2964 | Fredirect_frame_focus (frame, data->focus_frame); | |
fd482be5 | 2965 | #endif |
7ab12479 | 2966 | |
fd482be5 JB |
2967 | #if 0 /* I don't understand why this is needed, and it causes problems |
2968 | when the frame's old selected window has been deleted. */ | |
2969 | #ifdef MULTI_FRAME | |
2970 | if (f != selected_frame && ! FRAME_TERMCAP_P (f)) | |
d5b2799e | 2971 | Fhandle_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), Qnil); |
fd482be5 JB |
2972 | #endif |
2973 | #endif | |
2974 | ||
2975 | /* Set the screen height to the value it had before this function. */ | |
2976 | if (previous_frame_height != FRAME_HEIGHT (f) | |
2977 | || previous_frame_width != FRAME_WIDTH (f)) | |
2978 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2979 | 0, 0); | |
217f2871 | 2980 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
2981 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
2982 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
217f2871 | 2983 | #endif |
fd482be5 | 2984 | } |
bdc727bf | 2985 | |
756b6edc RS |
2986 | /* Restore the minimum heights recorded in the configuration. */ |
2987 | window_min_height = XINT (data->min_height); | |
2988 | window_min_width = XINT (data->min_width); | |
2989 | ||
ad854249 | 2990 | #ifdef MULTI_FRAME |
bdc727bf | 2991 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 2992 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
2993 | selected window too, but that doesn't make the call to |
2994 | Fselect_window above totally superfluous; it still sets f's | |
2995 | selected window. */ | |
fd482be5 | 2996 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
d5b2799e | 2997 | Fhandle_switch_frame (data->selected_frame, Qnil); |
ad854249 | 2998 | #endif |
bdc727bf JB |
2999 | |
3000 | if (!NILP (new_current_buffer)) | |
3001 | Fset_buffer (new_current_buffer); | |
3002 | ||
7ab12479 JB |
3003 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3004 | return (Qnil); | |
3005 | } | |
3006 | ||
44fa5b1e | 3007 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3008 | by setting their buffers to nil. */ |
3009 | ||
fd482be5 | 3010 | void |
7ab12479 JB |
3011 | delete_all_subwindows (w) |
3012 | register struct window *w; | |
3013 | { | |
265a9e55 | 3014 | if (!NILP (w->next)) |
7ab12479 | 3015 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3016 | if (!NILP (w->vchild)) |
7ab12479 | 3017 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3018 | if (!NILP (w->hchild)) |
7ab12479 | 3019 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3020 | |
3021 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3022 | ||
3023 | /* We set all three of these fields to nil, to make sure that we can | |
3024 | distinguish this dead window from any live window. Live leaf | |
3025 | windows will have buffer set, and combination windows will have | |
3026 | vchild or hchild set. */ | |
3027 | w->buffer = Qnil; | |
3028 | w->vchild = Qnil; | |
3029 | w->hchild = Qnil; | |
7ab12479 JB |
3030 | } |
3031 | \f | |
3032 | static int | |
3033 | count_windows (window) | |
3034 | register struct window *window; | |
3035 | { | |
3036 | register int count = 1; | |
265a9e55 | 3037 | if (!NILP (window->next)) |
7ab12479 | 3038 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3039 | if (!NILP (window->vchild)) |
7ab12479 | 3040 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3041 | if (!NILP (window->hchild)) |
7ab12479 JB |
3042 | count += count_windows (XWINDOW (window->hchild)); |
3043 | return count; | |
3044 | } | |
3045 | ||
3046 | static int | |
3047 | save_window_save (window, vector, i) | |
3048 | Lisp_Object window; | |
3049 | struct Lisp_Vector *vector; | |
3050 | int i; | |
3051 | { | |
3052 | register struct saved_window *p; | |
3053 | register struct window *w; | |
3054 | register Lisp_Object tem; | |
3055 | ||
265a9e55 | 3056 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3057 | { |
3058 | p = SAVED_WINDOW_N (vector, i); | |
3059 | w = XWINDOW (window); | |
3060 | ||
d834a2e9 | 3061 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3062 | p->window = window; |
3063 | p->buffer = w->buffer; | |
3064 | p->left = w->left; | |
3065 | p->top = w->top; | |
3066 | p->width = w->width; | |
3067 | p->height = w->height; | |
3068 | p->hscroll = w->hscroll; | |
3069 | p->display_table = w->display_table; | |
265a9e55 | 3070 | if (!NILP (w->buffer)) |
7ab12479 JB |
3071 | { |
3072 | /* Save w's value of point in the window configuration. | |
3073 | If w is the selected window, then get the value of point | |
3074 | from the buffer; pointm is garbage in the selected window. */ | |
3075 | if (EQ (window, selected_window)) | |
3076 | { | |
3077 | p->pointm = Fmake_marker (); | |
3078 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
3079 | w->buffer); | |
3080 | } | |
3081 | else | |
3082 | p->pointm = Fcopy_marker (w->pointm); | |
3083 | ||
3084 | p->start = Fcopy_marker (w->start); | |
3085 | p->start_at_line_beg = w->start_at_line_beg; | |
3086 | ||
3087 | tem = XBUFFER (w->buffer)->mark; | |
3088 | p->mark = Fcopy_marker (tem); | |
3089 | } | |
3090 | else | |
3091 | { | |
3092 | p->pointm = Qnil; | |
3093 | p->start = Qnil; | |
3094 | p->mark = Qnil; | |
3095 | p->start_at_line_beg = Qnil; | |
3096 | } | |
3097 | ||
265a9e55 | 3098 | if (NILP (w->parent)) |
7ab12479 JB |
3099 | p->parent = Qnil; |
3100 | else | |
3101 | p->parent = XWINDOW (w->parent)->temslot; | |
3102 | ||
265a9e55 | 3103 | if (NILP (w->prev)) |
7ab12479 JB |
3104 | p->prev = Qnil; |
3105 | else | |
3106 | p->prev = XWINDOW (w->prev)->temslot; | |
3107 | ||
265a9e55 | 3108 | if (!NILP (w->vchild)) |
7ab12479 | 3109 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3110 | if (!NILP (w->hchild)) |
7ab12479 JB |
3111 | i = save_window_save (w->hchild, vector, i); |
3112 | } | |
3113 | ||
3114 | return i; | |
3115 | } | |
3116 | ||
3117 | DEFUN ("current-window-configuration", | |
43bad991 | 3118 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
3119 | "Return an object representing the current window configuration of FRAME.\n\ |
3120 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3121 | This describes the number of windows, their sizes and current buffers,\n\ |
3122 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3123 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3124 | its value is -not- saved.\n\ |
3125 | This also records the currently selected frame, and FRAME's focus\n\ | |
3126 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3127 | (frame) |
3128 | Lisp_Object frame; | |
7ab12479 JB |
3129 | { |
3130 | register Lisp_Object tem; | |
3131 | register int n_windows; | |
3132 | register struct save_window_data *data; | |
da2792e0 | 3133 | register struct Lisp_Vector *vec; |
7ab12479 | 3134 | register int i; |
44fa5b1e | 3135 | FRAME_PTR f; |
43bad991 | 3136 | |
44fa5b1e JB |
3137 | if (NILP (frame)) |
3138 | f = selected_frame; | |
43bad991 JB |
3139 | else |
3140 | { | |
44fa5b1e JB |
3141 | CHECK_LIVE_FRAME (frame, 0); |
3142 | f = XFRAME (frame); | |
43bad991 | 3143 | } |
7ab12479 | 3144 | |
44fa5b1e | 3145 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3146 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3147 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3148 | vec->contents[i] = Qnil; | |
3149 | vec->size = VECSIZE (struct save_window_data); | |
3150 | data = (struct save_window_data *)vec; | |
3151 | ||
d834a2e9 KH |
3152 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3153 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3154 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
ad854249 | 3155 | #ifdef MULTI_FRAME |
74112613 | 3156 | XSETFRAME (data->selected_frame, selected_frame); |
ad854249 | 3157 | #endif |
44fa5b1e | 3158 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3159 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3160 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3161 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3162 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3163 | XSETINT (data->min_height, window_min_height); |
3164 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3165 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3166 | data->saved_windows = tem; | |
3167 | for (i = 0; i < n_windows; i++) | |
3168 | XVECTOR (tem)->contents[i] | |
3169 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3170 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3171 | XVECTOR (tem), 0); |
74112613 | 3172 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3173 | return (tem); |
3174 | } | |
3175 | ||
3176 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3177 | 0, UNEVALLED, 0, | |
3178 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3179 | Restore which buffer appears in which window, where display starts,\n\ |
3180 | and the value of point and mark for each window.\n\ | |
3181 | Also restore which buffer is current.\n\ | |
3182 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3183 | Does not restore the value of point in current buffer.") |
3184 | (args) | |
3185 | Lisp_Object args; | |
3186 | { | |
3187 | register Lisp_Object val; | |
3188 | register int count = specpdl_ptr - specpdl; | |
3189 | ||
3190 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3191 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3192 | val = Fprogn (args); |
3193 | return unbind_to (count, val); | |
3194 | } | |
3195 | \f | |
3196 | init_window_once () | |
3197 | { | |
44fa5b1e JB |
3198 | #ifdef MULTI_FRAME |
3199 | selected_frame = make_terminal_frame (); | |
3200 | minibuf_window = selected_frame->minibuffer_window; | |
3201 | selected_window = selected_frame->selected_window; | |
3202 | last_nonminibuf_frame = selected_frame; | |
3203 | #else /* not MULTI_FRAME */ | |
7ab12479 JB |
3204 | extern Lisp_Object get_minibuffer (); |
3205 | ||
87485d6f MW |
3206 | selected_frame = last_nonminibuf_frame = &the_only_frame; |
3207 | ||
95605e15 | 3208 | minibuf_window = make_window (); |
4b206065 | 3209 | FRAME_ROOT_WINDOW (selected_frame) = make_window (); |
7ab12479 | 3210 | |
44fa5b1e JB |
3211 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->next = minibuf_window; |
3212 | XWINDOW (minibuf_window)->prev = FRAME_ROOT_WINDOW (selected_frame); | |
4b206065 | 3213 | XWINDOW (minibuf_window)->mini_p = Qt; |
7ab12479 JB |
3214 | |
3215 | /* These values 9 and 10 are arbitrary, | |
3216 | just so that there is "something there." | |
3217 | Correct values are put in in init_xdisp */ | |
3218 | ||
d834a2e9 KH |
3219 | XSETFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->width, 10); |
3220 | XSETFASTINT (XWINDOW (minibuf_window)->width, 10); | |
7ab12479 | 3221 | |
d834a2e9 KH |
3222 | XSETFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->height, 9); |
3223 | XSETFASTINT (XWINDOW (minibuf_window)->top, 9); | |
3224 | XSETFASTINT (XWINDOW (minibuf_window)->height, 1); | |
7ab12479 JB |
3225 | |
3226 | /* Prevent error in Fset_window_buffer. */ | |
44fa5b1e | 3227 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->buffer = Qt; |
7ab12479 JB |
3228 | XWINDOW (minibuf_window)->buffer = Qt; |
3229 | ||
3230 | /* Now set them up for real. */ | |
44fa5b1e | 3231 | Fset_window_buffer (FRAME_ROOT_WINDOW (selected_frame), |
e5d77022 | 3232 | Fcurrent_buffer ()); |
7ab12479 JB |
3233 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); |
3234 | ||
44fa5b1e | 3235 | selected_window = FRAME_ROOT_WINDOW (selected_frame); |
1d8d96fa JB |
3236 | /* Make sure this window seems more recently used than |
3237 | a newly-created, never-selected window. Increment | |
3238 | window_select_count so the first selection ever will get | |
3239 | something newer than this. */ | |
d834a2e9 | 3240 | XSETFASTINT (XWINDOW (selected_window)->use_time, ++window_select_count); |
44fa5b1e | 3241 | #endif /* not MULTI_FRAME */ |
7ab12479 JB |
3242 | } |
3243 | ||
3244 | syms_of_window () | |
3245 | { | |
3246 | Qwindowp = intern ("windowp"); | |
3247 | staticpro (&Qwindowp); | |
3248 | ||
806b4d9b JB |
3249 | Qwindow_live_p = intern ("window-live-p"); |
3250 | staticpro (&Qwindow_live_p); | |
605be8af | 3251 | |
2f83aebe | 3252 | #ifndef MULTI_FRAME |
7ab12479 JB |
3253 | /* Make sure all windows get marked */ |
3254 | staticpro (&minibuf_window); | |
2f83aebe | 3255 | #endif |
7ab12479 JB |
3256 | |
3257 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
3258 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3259 | The function is called with one argument, the buffer to be displayed.\n\ |
7ab12479 JB |
3260 | Used by `with-output-to-temp-buffer'."); |
3261 | Vtemp_buffer_show_function = Qnil; | |
3262 | ||
3263 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3264 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3265 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3266 | that the currently selected window is not acceptable.\n\ | |
3267 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3268 | work using this function."); | |
3269 | Vdisplay_buffer_function = Qnil; | |
3270 | ||
7ab12479 JB |
3271 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3272 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3273 | Vminibuf_scroll_window = Qnil; | |
3274 | ||
3275 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3276 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3277 | Vother_window_scroll_buffer = Qnil; | |
3278 | ||
44fa5b1e | 3279 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3280 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3281 | pop_up_frames = 0; |
7ab12479 | 3282 | |
44fa5b1e | 3283 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3284 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3285 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3286 | \n\ |
44fa5b1e JB |
3287 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3288 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3289 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3290 | |
a90712c2 RS |
3291 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3292 | "*List of buffer names that should have their own special frames.\n\ | |
3293 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 RS |
3294 | using `special-display-function'.\n\ |
3295 | Instead of a buffer name, the list entries can be cons cells. In that\n\ | |
99da5b4e | 3296 | case the car should be a buffer name, and the cdr data to be passed as a\n\ |
0a952b57 RS |
3297 | second argument to `special-display-function'.\n\ |
3298 | See also `special-display-regexps'."); | |
a90712c2 RS |
3299 | Vspecial_display_buffer_names = Qnil; |
3300 | ||
3301 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3302 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3303 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3304 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 RS |
3305 | using `special-display-function'.\n\ |
3306 | Instead of a buffer name, the list entries can be cons cells. In that\n\ | |
99da5b4e | 3307 | case the car should be the regexp, and the cdr data to be passed as a\n\ |
0a952b57 RS |
3308 | second argument to `special-display-function'.\n\ |
3309 | See also `special-display-buffer-names'."); | |
a90712c2 RS |
3310 | Vspecial_display_regexps = Qnil; |
3311 | ||
3312 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3313 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3314 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3315 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3316 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3317 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3318 | \n\ |
3319 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3320 | or matches a regexp in `special-display-regexps'."); | |
3321 | Vspecial_display_function = Qnil; | |
3322 | ||
7ab12479 JB |
3323 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3324 | "*Non-nil means display-buffer should make new windows."); | |
3325 | pop_up_windows = 1; | |
3326 | ||
3327 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3328 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3329 | next_screen_context_lines = 2; | |
3330 | ||
3331 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3332 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3333 | If there is only one window, it is split regardless of this value."); | |
3334 | split_height_threshold = 500; | |
3335 | ||
3336 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3337 | "*Delete any window less than this tall (including its mode line)."); | |
3338 | window_min_height = 4; | |
3339 | ||
3340 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3341 | "*Delete any window less than this wide."); | |
3342 | window_min_width = 10; | |
3343 | ||
3344 | defsubr (&Sselected_window); | |
3345 | defsubr (&Sminibuffer_window); | |
3346 | defsubr (&Swindow_minibuffer_p); | |
3347 | defsubr (&Swindowp); | |
806b4d9b | 3348 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3349 | defsubr (&Spos_visible_in_window_p); |
3350 | defsubr (&Swindow_buffer); | |
3351 | defsubr (&Swindow_height); | |
3352 | defsubr (&Swindow_width); | |
3353 | defsubr (&Swindow_hscroll); | |
3354 | defsubr (&Sset_window_hscroll); | |
3355 | defsubr (&Swindow_edges); | |
d5783c40 JB |
3356 | defsubr (&Scoordinates_in_window_p); |
3357 | defsubr (&Swindow_at); | |
7ab12479 JB |
3358 | defsubr (&Swindow_point); |
3359 | defsubr (&Swindow_start); | |
3360 | defsubr (&Swindow_end); | |
3361 | defsubr (&Sset_window_point); | |
3362 | defsubr (&Sset_window_start); | |
3363 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3364 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3365 | defsubr (&Swindow_display_table); |
3366 | defsubr (&Sset_window_display_table); | |
3367 | defsubr (&Snext_window); | |
3368 | defsubr (&Sprevious_window); | |
3369 | defsubr (&Sother_window); | |
3370 | defsubr (&Sget_lru_window); | |
3371 | defsubr (&Sget_largest_window); | |
3372 | defsubr (&Sget_buffer_window); | |
3373 | defsubr (&Sdelete_other_windows); | |
3374 | defsubr (&Sdelete_windows_on); | |
3375 | defsubr (&Sreplace_buffer_in_windows); | |
3376 | defsubr (&Sdelete_window); | |
3377 | defsubr (&Sset_window_buffer); | |
3378 | defsubr (&Sselect_window); | |
3379 | defsubr (&Sdisplay_buffer); | |
3380 | defsubr (&Ssplit_window); | |
3381 | defsubr (&Senlarge_window); | |
3382 | defsubr (&Sshrink_window); | |
3383 | defsubr (&Sscroll_up); | |
3384 | defsubr (&Sscroll_down); | |
3385 | defsubr (&Sscroll_left); | |
3386 | defsubr (&Sscroll_right); | |
ccd0664b | 3387 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
3388 | defsubr (&Sscroll_other_window); |
3389 | defsubr (&Srecenter); | |
3390 | defsubr (&Smove_to_window_line); | |
3391 | defsubr (&Swindow_configuration_p); | |
3392 | defsubr (&Sset_window_configuration); | |
3393 | defsubr (&Scurrent_window_configuration); | |
3394 | defsubr (&Ssave_window_excursion); | |
3395 | } | |
3396 | ||
3397 | keys_of_window () | |
3398 | { | |
3399 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3400 | initial_define_key (control_x_map, '2', "split-window"); | |
3401 | initial_define_key (control_x_map, '0', "delete-window"); | |
3402 | initial_define_key (control_x_map, 'o', "other-window"); | |
3403 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3404 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3405 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3406 | ||
3407 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3408 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3409 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3410 | ||
3411 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3412 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3413 | } |