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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
3 | Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc. | |
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 | |
9 | the Free Software Foundation; either version 1, or (at your option) | |
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 | ||
7ab12479 JB |
21 | #include "config.h" |
22 | #include "lisp.h" | |
23 | #include "buffer.h" | |
24 | #include "screen.h" | |
25 | #include "window.h" | |
26 | #include "commands.h" | |
27 | #include "indent.h" | |
28 | #include "termchar.h" | |
29 | #include "disptab.h" | |
30 | ||
31 | Lisp_Object Qwindowp; | |
32 | ||
33 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
34 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
35 | ||
36 | static void delete_all_subwindows (); | |
37 | static struct window *decode_window(); | |
38 | ||
39 | /* This is the window in which the terminal's cursor should | |
40 | be left when nothing is being done with it. This must | |
41 | always be a leaf window, and its buffer is selected by | |
42 | the top level editing loop at the end of each command. | |
43 | ||
44 | This value is always the same as | |
45 | SCREEN_SELECTED_WINDOW (selected_screen). */ | |
46 | ||
47 | Lisp_Object selected_window; | |
48 | ||
49 | #ifndef MULTI_SCREEN | |
50 | ||
51 | /* The root window for the screen. | |
52 | This is accessed via SCREEN_ROOT_WINDOW (selected_screen). */ | |
53 | Lisp_Object root_window; | |
54 | ||
55 | #endif | |
56 | ||
57 | /* The minibuffer window of the selected screen. | |
58 | Note that you cannot test for minibufferness of an arbitrary window | |
59 | by comparing against this; but you can test for minibufferness of | |
60 | the selected window. */ | |
61 | Lisp_Object minibuf_window; | |
62 | ||
63 | /* Non-nil means it is the window for C-M-v to scroll | |
64 | when the minibuffer is selected. */ | |
65 | Lisp_Object Vminibuf_scroll_window; | |
66 | ||
67 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
68 | Lisp_Object Vother_window_scroll_buffer; | |
69 | ||
70 | /* Window that the mouse is over (nil if no mouse support). */ | |
71 | Lisp_Object Vmouse_window; | |
72 | ||
73 | /* Last mouse click data structure (nil if no mouse support). */ | |
74 | Lisp_Object Vmouse_event; | |
75 | ||
76 | /* Non-nil means it's function to call to display temp buffers. */ | |
77 | Lisp_Object Vtemp_buffer_show_function; | |
78 | ||
79 | /* If a window gets smaller than either of these, it is removed. */ | |
80 | int window_min_height; | |
81 | int window_min_width; | |
82 | ||
83 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
84 | int pop_up_windows; | |
85 | ||
86 | /* Nonzero implies make new X screens for Fdisplay_buffer. */ | |
43bad991 | 87 | int pop_up_screens; |
7ab12479 JB |
88 | |
89 | /* Non-nil means use this function instead of default */ | |
43bad991 | 90 | Lisp_Object Vpop_up_screen_function; |
7ab12479 JB |
91 | |
92 | /* Function to call to handle Fdisplay_buffer. */ | |
93 | Lisp_Object Vdisplay_buffer_function; | |
94 | ||
95 | /* Fdisplay_buffer always splits the largest window | |
96 | if that window is more than this high. */ | |
97 | int split_height_threshold; | |
98 | ||
99 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
100 | int next_screen_context_lines; | |
101 | ||
102 | /* Incremented for each window created. */ | |
103 | static int sequence_number; | |
104 | ||
105 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
106 | \f | |
107 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
108 | "Returns t if OBJ is a window.") | |
109 | (obj) | |
110 | Lisp_Object obj; | |
111 | { | |
112 | return XTYPE (obj) == Lisp_Window ? Qt : Qnil; | |
113 | } | |
114 | ||
115 | Lisp_Object | |
116 | make_window () | |
117 | { | |
118 | register Lisp_Object val; | |
119 | register struct window *p; | |
120 | ||
121 | /* Add sizeof (Lisp_Object) here because sizeof (struct Lisp_Vector) | |
122 | includes the first element. */ | |
123 | val = Fmake_vector ( | |
124 | make_number ((sizeof (struct window) - sizeof (struct Lisp_Vector) | |
125 | + sizeof (Lisp_Object)) | |
126 | / sizeof (Lisp_Object)), | |
127 | Qnil); | |
128 | XSETTYPE (val, Lisp_Window); | |
129 | p = XWINDOW (val); | |
130 | XFASTINT (p->sequence_number) = ++sequence_number; | |
131 | XFASTINT (p->left) = XFASTINT (p->top) | |
132 | = XFASTINT (p->height) = XFASTINT (p->width) | |
133 | = XFASTINT (p->hscroll) = 0; | |
134 | XFASTINT (p->last_point_x) = XFASTINT (p->last_point_y) = 0; | |
135 | p->start = Fmake_marker (); | |
136 | p->pointm = Fmake_marker (); | |
137 | XFASTINT (p->use_time) = 0; | |
138 | p->screen = Qnil; | |
139 | p->display_table = Qnil; | |
140 | p->dedicated = Qnil; | |
141 | return val; | |
142 | } | |
143 | ||
144 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
145 | "Return the window that the cursor now appears in and commands apply to.") | |
146 | () | |
147 | { | |
148 | return selected_window; | |
149 | } | |
150 | ||
151 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 0, 0, | |
152 | "Return the window used now for minibuffers.") | |
153 | () | |
154 | { | |
155 | #ifdef MULTI_SCREEN | |
d5783c40 | 156 | choose_minibuf_screen (); |
7ab12479 JB |
157 | #endif /* MULTI_SCREEN */ |
158 | return minibuf_window; | |
159 | } | |
160 | ||
161 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 1, 1, 0, | |
162 | "Returns non-nil if WINDOW is a minibuffer window.") | |
163 | (window) | |
164 | Lisp_Object window; | |
165 | { | |
166 | struct window *w = decode_window (window); | |
167 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
168 | } | |
169 | ||
170 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
171 | Spos_visible_in_window_p, 0, 2, 0, | |
172 | "Return t if position POS is currently on the screen in WINDOW.\n\ | |
173 | Returns nil if that position is scrolled vertically out of view.\n\ | |
174 | POS defaults to point; WINDOW, to the selected window.") | |
175 | (pos, window) | |
176 | Lisp_Object pos, window; | |
177 | { | |
178 | register struct window *w; | |
179 | register int top; | |
180 | register int height; | |
181 | register int posint; | |
182 | register struct buffer *buf; | |
183 | struct position posval; | |
184 | ||
265a9e55 | 185 | if (NILP (pos)) |
7ab12479 JB |
186 | posint = point; |
187 | else | |
188 | { | |
189 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
190 | posint = XINT (pos); | |
191 | } | |
192 | ||
265a9e55 | 193 | if (NILP (window)) |
7ab12479 JB |
194 | window = selected_window; |
195 | else | |
196 | CHECK_WINDOW (window, 1); | |
197 | w = XWINDOW (window); | |
198 | top = marker_position (w->start); | |
199 | ||
200 | if (posint < top) | |
201 | return Qnil; | |
202 | ||
203 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
204 | ||
205 | buf = XBUFFER (w->buffer); | |
206 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
207 | { | |
208 | /* If screen is up to date, | |
209 | use the info recorded about how much text fit on it. */ | |
210 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
211 | || (XFASTINT (w->window_end_vpos) < height)) | |
212 | return Qt; | |
213 | return Qnil; | |
214 | } | |
215 | else | |
216 | { | |
217 | if (posint > BUF_Z (buf)) | |
218 | return Qnil; | |
219 | ||
220 | /* If that info is not correct, calculate afresh */ | |
221 | posval = *compute_motion (top, 0, 0, posint, height, 0, | |
222 | XFASTINT (w->width) - 1 | |
223 | - (XFASTINT (w->width) + XFASTINT (w->left) | |
224 | != XSCREEN (w->screen)->width), | |
225 | XINT (w->hscroll), 0); | |
226 | ||
227 | return posval.vpos < height ? Qt : Qnil; | |
228 | } | |
229 | } | |
230 | \f | |
231 | static struct window * | |
232 | decode_window (window) | |
233 | register Lisp_Object window; | |
234 | { | |
265a9e55 | 235 | if (NILP (window)) |
7ab12479 JB |
236 | return XWINDOW (selected_window); |
237 | ||
238 | CHECK_WINDOW (window, 0); | |
239 | return XWINDOW (window); | |
240 | } | |
241 | ||
242 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
243 | "Return the buffer that WINDOW is displaying.") | |
244 | (window) | |
245 | Lisp_Object window; | |
246 | { | |
247 | return decode_window (window)->buffer; | |
248 | } | |
249 | ||
250 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
251 | "Return the number of lines in WINDOW (including its mode line).") | |
252 | (window) | |
253 | Lisp_Object window; | |
254 | { | |
255 | return decode_window (window)->height; | |
256 | } | |
257 | ||
258 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
259 | "Return the number of columns in WINDOW.") | |
260 | (window) | |
261 | Lisp_Object window; | |
262 | { | |
263 | register struct window *w = decode_window (window); | |
264 | register int width = w->width; | |
265 | ||
266 | /* If this window does not end at the right margin, | |
267 | must deduct one column for the border */ | |
268 | if ((width + w->left) == SCREEN_WIDTH (XSCREEN (WINDOW_SCREEN (w)))) | |
269 | return width; | |
270 | return width - 1; | |
271 | } | |
272 | ||
273 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
274 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
275 | (window) | |
276 | Lisp_Object window; | |
277 | { | |
278 | return decode_window (window)->hscroll; | |
279 | } | |
280 | ||
281 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
282 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
283 | NCOL should be zero or positive.") | |
284 | (window, ncol) | |
285 | register Lisp_Object window, ncol; | |
286 | { | |
287 | register struct window *w; | |
288 | ||
289 | CHECK_NUMBER (ncol, 1); | |
290 | if (XINT (ncol) < 0) XFASTINT (ncol) = 0; | |
291 | if (XFASTINT (ncol) >= (1 << (SHORTBITS - 1))) | |
292 | args_out_of_range (ncol, Qnil); | |
293 | w = decode_window (window); | |
294 | if (w->hscroll != ncol) | |
295 | clip_changed = 1; /* Prevent redisplay shortcuts */ | |
296 | w->hscroll = ncol; | |
297 | return ncol; | |
298 | } | |
299 | ||
300 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, | |
301 | "Return a list of the edge coordinates of WINDOW.\n\ | |
302 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of screen.\n\ | |
303 | RIGHT is one more than the rightmost column used by WINDOW,\n\ | |
304 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
305 | and its mode-line.") | |
306 | (window) | |
307 | Lisp_Object window; | |
308 | { | |
309 | register struct window *w = decode_window (window); | |
310 | ||
311 | return Fcons (w->left, Fcons (w->top, | |
312 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
313 | Fcons (make_number (XFASTINT (w->top) | |
314 | + XFASTINT (w->height)), | |
315 | Qnil)))); | |
316 | } | |
317 | ||
d5783c40 JB |
318 | /* Test if the character at column *x, row *y is within window *w. |
319 | If it is not, return 0; | |
320 | if it is in the window's text area, | |
321 | set *x and *y to its location relative to the upper left corner | |
322 | of the window, and | |
323 | return 1; | |
324 | if it is on the window's modeline, return 2; | |
325 | if it is on the border between the window and its right sibling, | |
326 | return 3. */ | |
327 | static int | |
328 | coordinates_in_window (w, x, y) | |
329 | register struct window *w; | |
330 | register int *x, *y; | |
331 | { | |
332 | register int left = XINT (w->left); | |
333 | register int width = XINT (w->width); | |
334 | register int window_height = XINT (w->height); | |
335 | register int top = XFASTINT (w->top); | |
336 | ||
337 | if ( *x < left || *x >= left + width | |
338 | || *y < top || *y >= top + window_height) | |
339 | return 0; | |
340 | ||
341 | /* Is the character is the mode line? */ | |
342 | if (*y == top + window_height - 1 | |
343 | && window_height > 1) /* 1 line => minibuffer */ | |
344 | return 2; | |
345 | ||
346 | /* Is the character in the right border? */ | |
347 | if (*x == left + width - 1 | |
348 | && left + width != SCREEN_WIDTH (XSCREEN (w->screen))) | |
349 | return 3; | |
350 | ||
351 | *x -= left; | |
352 | *y -= top; | |
353 | return 1; | |
354 | } | |
355 | ||
356 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
357 | Scoordinates_in_window_p, 2, 2, 0, | |
358 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
359 | COORDINATES is a cons of the form (X . Y), X and Y being screen-relative.\n\ | |
360 | If COORDINATES are in the text portion of WINDOW,\n\ | |
361 | the coordinates relative to the window are returned.\n\ | |
362 | If they are in the mode line of WINDOW, 'mode-line is returned.\n\ | |
363 | If they are on the border between WINDOW and its right sibling,\n\ | |
364 | 'vertical-split is returned.") | |
365 | (coordinates, window) | |
366 | register Lisp_Object coordinates, window; | |
367 | { | |
368 | int x, y; | |
369 | ||
370 | CHECK_WINDOW (window, 0); | |
371 | CHECK_CONS (coordinates, 1); | |
372 | x = XINT (Fcar (coordinates)); | |
373 | y = XINT (Fcdr (coordinates)); | |
374 | ||
375 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
376 | { | |
377 | case 0: /* NOT in window at all. */ | |
378 | return Qnil; | |
379 | ||
380 | case 1: /* In text part of window. */ | |
381 | return Fcons (x, y); | |
382 | ||
383 | case 2: /* In mode line of window. */ | |
384 | return Qmode_line; | |
385 | ||
386 | case 3: /* On right border of window. */ | |
387 | return Qvertical_split; | |
388 | ||
389 | default: | |
390 | abort (); | |
391 | } | |
392 | } | |
393 | ||
7ab12479 | 394 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
395 | Lisp_Object. If x, y is on the window's modeline, set *part |
396 | to 1; if it is on the separating line between the window and its | |
397 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
398 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 399 | Lisp_Object |
d5783c40 | 400 | window_from_coordinates (screen, x, y, part) |
7ab12479 JB |
401 | SCREEN_PTR screen; |
402 | int x, y; | |
d5783c40 | 403 | int *part; |
7ab12479 JB |
404 | { |
405 | register Lisp_Object tem, first; | |
406 | ||
d5783c40 | 407 | tem = first = SCREEN_SELECTED_WINDOW (screen); |
7ab12479 | 408 | |
d5783c40 | 409 | do |
7ab12479 JB |
410 | { |
411 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
412 | ||
413 | if (found) | |
414 | { | |
d5783c40 | 415 | *part = found - 1; |
7ab12479 JB |
416 | return tem; |
417 | } | |
418 | ||
d5783c40 | 419 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 420 | } |
d5783c40 JB |
421 | while (! EQ (tem, first)); |
422 | ||
423 | return Qnil; | |
7ab12479 JB |
424 | } |
425 | ||
d5783c40 JB |
426 | DEFUN ("window-at", Fwindow_at, Swindow_at, 1, 2, 0, |
427 | "Return window containing position COORDINATES on SCREEN.\n\ | |
428 | If omitted, SCREEN defaults to the currently selected screen.\n\ | |
429 | COORDINATES is a pair (SCREEN-X . SCREEN-Y) of coordinates\n\ | |
7ab12479 | 430 | which are relative to 0,0 at the top left corner of the screen.") |
d5783c40 JB |
431 | (coordinates, screen) |
432 | Lisp_Object coordinates, screen; | |
7ab12479 JB |
433 | { |
434 | int part; | |
435 | ||
265a9e55 | 436 | if (NILP (screen)) |
d5783c40 JB |
437 | XSET (screen, Lisp_Screen, selected_screen); |
438 | else | |
439 | CHECK_LIVE_SCREEN (screen, 0); | |
7ab12479 | 440 | CHECK_CONS (coordinates, 1); |
d5783c40 JB |
441 | CHECK_NUMBER (XCONS (coordinates)->car, 1); |
442 | CHECK_NUMBER (XCONS (coordinates)->cdr, 1); | |
7ab12479 JB |
443 | |
444 | return window_from_coordinates (XSCREEN (screen), | |
445 | XINT (Fcar (coordinates)), | |
d5783c40 | 446 | XINT (Fcdr (coordinates)), |
7ab12479 JB |
447 | &part); |
448 | } | |
449 | ||
450 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
451 | "Return current value of point in WINDOW.\n\ | |
452 | For a nonselected window, this is the value point would have\n\ | |
453 | if that window were selected.\n\ | |
454 | \n\ | |
455 | Note that, when WINDOW is the selected window and its buffer\n\ | |
456 | is also currently selected, the value returned is the same as (point).\n\ | |
457 | It would be more strictly correct to return the `top-level' value\n\ | |
458 | of point, outside of any save-excursion forms.\n\ | |
459 | But that is hard to define.") | |
460 | (window) | |
461 | Lisp_Object window; | |
462 | { | |
463 | register struct window *w = decode_window (window); | |
464 | ||
465 | if (w == XWINDOW (selected_window) | |
466 | && current_buffer == XBUFFER (w->buffer)) | |
467 | return Fpoint (); | |
468 | return Fmarker_position (w->pointm); | |
469 | } | |
470 | ||
471 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
472 | "Return position at which display currently starts in WINDOW.") | |
473 | (window) | |
474 | Lisp_Object window; | |
475 | { | |
476 | return Fmarker_position (decode_window (window)->start); | |
477 | } | |
478 | ||
479 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
480 | "Return position at which display currently ends in WINDOW.") | |
481 | (window) | |
482 | Lisp_Object window; | |
483 | { | |
484 | Lisp_Object value; | |
485 | struct window *w = decode_window (window); | |
486 | ||
487 | XSET (value, Lisp_Int, | |
488 | BUF_Z (current_buffer) - XFASTINT (w->window_end_pos)); | |
489 | ||
490 | return value; | |
491 | } | |
492 | ||
493 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
494 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
495 | (window, pos) | |
496 | Lisp_Object window, pos; | |
497 | { | |
498 | register struct window *w = decode_window (window); | |
499 | ||
500 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
501 | if (w == XWINDOW (selected_window)) | |
502 | Fgoto_char (pos); | |
503 | else | |
504 | set_marker_restricted (w->pointm, pos, w->buffer); | |
505 | ||
506 | return pos; | |
507 | } | |
508 | ||
509 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
510 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
511 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
512 | from overriding motion of point in order to display at this exact start.") | |
513 | (window, pos, noforce) | |
514 | Lisp_Object window, pos, noforce; | |
515 | { | |
516 | register struct window *w = decode_window (window); | |
517 | ||
518 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
519 | set_marker_restricted (w->start, pos, w->buffer); | |
520 | /* this is not right, but much easier than doing what is right. */ | |
521 | w->start_at_line_beg = Qnil; | |
265a9e55 | 522 | if (NILP (noforce)) |
7ab12479 JB |
523 | w->force_start = Qt; |
524 | w->update_mode_line = Qt; | |
525 | XFASTINT (w->last_modified) = 0; | |
62c07cc7 JB |
526 | if (!EQ (window, selected_window)) |
527 | windows_or_buffers_changed++; | |
7ab12479 JB |
528 | return pos; |
529 | } | |
530 | ||
531 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
532 | 1, 1, 0, | |
533 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
534 | See also `set-window-buffer-dedicated'.") | |
535 | (window) | |
536 | Lisp_Object window; | |
537 | { | |
538 | return decode_window (window)->dedicated; | |
539 | } | |
540 | ||
541 | DEFUN ("set-window-buffer-dedicated", Fset_window_buffer_dedicated, | |
542 | Sset_window_buffer_dedicated, 2, 2, 0, | |
543 | "Make WINDOW display BUFFER and be dedicated to that buffer.\n\ | |
544 | Then Emacs will not automatically change which buffer appears in WINDOW.\n\ | |
545 | If BUFFER is nil, make WINDOW not be dedicated (but don't change which\n\ | |
546 | buffer appears in it currently).") | |
547 | (window, arg) | |
548 | Lisp_Object window, arg; | |
549 | { | |
550 | register struct window *w = decode_window (window); | |
551 | ||
265a9e55 | 552 | if (NILP (arg)) |
7ab12479 JB |
553 | w->dedicated = Qnil; |
554 | else | |
555 | { | |
556 | Fset_window_buffer (window, Fget_buffer_create (arg)); | |
557 | w->dedicated = Qt; | |
558 | } | |
559 | ||
560 | return w->dedicated; | |
561 | } | |
562 | ||
563 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
564 | 0, 1, 0, | |
565 | "Return the display-table that WINDOW is using.") | |
566 | (window) | |
567 | Lisp_Object window; | |
568 | { | |
569 | return decode_window (window)->display_table; | |
570 | } | |
571 | ||
572 | /* Get the display table for use currently on window W. | |
573 | This is either W's display table or W's buffer's display table. | |
574 | Ignore the specified tables if they are not valid; | |
575 | if no valid table is specified, return 0. */ | |
576 | ||
577 | struct Lisp_Vector * | |
578 | window_display_table (w) | |
579 | struct window *w; | |
580 | { | |
581 | Lisp_Object tem; | |
582 | tem = w->display_table; | |
583 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
584 | return XVECTOR (tem); | |
585 | tem = XBUFFER (w->buffer)->display_table; | |
586 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
587 | return XVECTOR (tem); | |
588 | tem = Vstandard_display_table; | |
589 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
590 | return XVECTOR (tem); | |
591 | return 0; | |
592 | } | |
593 | ||
594 | DEFUN ("set-window-display-table", | |
595 | Fset_window_display_table, Sset_window_display_table, 2, 2, 0, | |
596 | "Set WINDOW's display-table to TABLE.") | |
597 | (window, table) | |
598 | register Lisp_Object window, table; | |
599 | { | |
600 | register struct window *w; | |
601 | register Lisp_Object z; /* Return value. */ | |
602 | ||
603 | w = decode_window (window); | |
604 | w->display_table = table; | |
605 | return table; | |
606 | } | |
607 | \f | |
608 | /* Record info on buffer window w is displaying | |
609 | when it is about to cease to display that buffer. */ | |
610 | static | |
611 | unshow_buffer (w) | |
612 | register struct window *w; | |
613 | { | |
614 | Lisp_Object buf = w->buffer; | |
615 | ||
616 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) | |
617 | abort (); | |
618 | ||
619 | if (w == XWINDOW (selected_window) | |
620 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
621 | /* Do this except when the selected window's buffer | |
622 | is being removed from some other window. */ | |
623 | XBUFFER (buf)->last_window_start = marker_position (w->start); | |
624 | ||
625 | /* Point in the selected window's buffer | |
626 | is actually stored in that buffer, and the window's pointm isn't used. | |
627 | So don't clobber point in that buffer. */ | |
628 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
629 | BUF_PT (XBUFFER (buf)) | |
630 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
631 | marker_position (w->pointm), | |
632 | BUF_ZV (XBUFFER (buf))); | |
633 | } | |
634 | ||
635 | /* Put replacement into the window structure in place of old. */ | |
636 | static | |
637 | replace_window (old, replacement) | |
638 | Lisp_Object old, replacement; | |
639 | { | |
640 | register Lisp_Object tem; | |
641 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
642 | ||
643 | /* If OLD is its screen's root_window, then replacement is the new | |
644 | root_window for that screen. */ | |
645 | ||
646 | if (old == XSCREEN (o->screen)->root_window) | |
647 | XSCREEN (o->screen)->root_window = replacement; | |
648 | ||
649 | p->left = o->left; | |
650 | p->top = o->top; | |
651 | p->width = o->width; | |
652 | p->height = o->height; | |
653 | ||
654 | p->next = tem = o->next; | |
265a9e55 | 655 | if (!NILP (tem)) |
7ab12479 JB |
656 | XWINDOW (tem)->prev = replacement; |
657 | ||
658 | p->prev = tem = o->prev; | |
265a9e55 | 659 | if (!NILP (tem)) |
7ab12479 JB |
660 | XWINDOW (tem)->next = replacement; |
661 | ||
662 | p->parent = tem = o->parent; | |
265a9e55 | 663 | if (!NILP (tem)) |
7ab12479 JB |
664 | { |
665 | if (EQ (XWINDOW (tem)->vchild, old)) | |
666 | XWINDOW (tem)->vchild = replacement; | |
667 | if (EQ (XWINDOW (tem)->hchild, old)) | |
668 | XWINDOW (tem)->hchild = replacement; | |
669 | } | |
670 | ||
671 | /*** Here, if replacement is a vertical combination | |
672 | and so is its new parent, we should make replacement's | |
673 | children be children of that parent instead. ***/ | |
674 | } | |
675 | ||
676 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
677 | "Remove WINDOW from the display. Default is selected window.") | |
678 | (window) | |
679 | register Lisp_Object window; | |
680 | { | |
681 | register Lisp_Object tem, parent, sib; | |
682 | register struct window *p; | |
683 | register struct window *par; | |
684 | ||
265a9e55 | 685 | if (NILP (window)) |
7ab12479 JB |
686 | window = selected_window; |
687 | else | |
688 | CHECK_WINDOW (window, 0); | |
689 | ||
690 | p = XWINDOW (window); | |
691 | parent = p->parent; | |
265a9e55 | 692 | if (NILP (parent)) |
7ab12479 JB |
693 | error ("Attempt to delete minibuffer or sole ordinary window"); |
694 | par = XWINDOW (parent); | |
695 | ||
696 | windows_or_buffers_changed++; | |
697 | ||
698 | if (EQ (window, selected_window)) | |
699 | Fselect_window (Fnext_window (window, Qnil, Qnil)); | |
700 | ||
701 | tem = p->buffer; | |
702 | /* tem is null for dummy parent windows | |
703 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 704 | if (!NILP (tem)) |
7ab12479 JB |
705 | { |
706 | unshow_buffer (p); | |
707 | unchain_marker (p->pointm); | |
708 | unchain_marker (p->start); | |
709 | p->buffer = Qnil; | |
710 | } | |
711 | ||
712 | tem = p->next; | |
265a9e55 | 713 | if (!NILP (tem)) |
7ab12479 JB |
714 | XWINDOW (tem)->prev = p->prev; |
715 | ||
716 | tem = p->prev; | |
265a9e55 | 717 | if (!NILP (tem)) |
7ab12479 JB |
718 | XWINDOW (tem)->next = p->next; |
719 | ||
720 | if (EQ (window, par->hchild)) | |
721 | par->hchild = p->next; | |
722 | if (EQ (window, par->vchild)) | |
723 | par->vchild = p->next; | |
724 | ||
725 | /* Find one of our siblings to give our space to. */ | |
726 | sib = p->prev; | |
265a9e55 | 727 | if (NILP (sib)) |
7ab12479 JB |
728 | { |
729 | /* If p gives its space to its next sibling, that sibling needs | |
730 | to have its top/left side pulled back to where p's is. | |
731 | set_window_{height,width} will re-position the sibling's | |
732 | children. */ | |
733 | sib = p->next; | |
734 | XFASTINT (XWINDOW (sib)->top) = p->top; | |
735 | XFASTINT (XWINDOW (sib)->left) = p->left; | |
736 | } | |
737 | ||
738 | /* Stretch that sibling. */ | |
265a9e55 | 739 | if (!NILP (par->vchild)) |
7ab12479 JB |
740 | set_window_height (sib, |
741 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
742 | 1); | |
265a9e55 | 743 | if (!NILP (par->hchild)) |
7ab12479 JB |
744 | set_window_width (sib, |
745 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
746 | 1); | |
747 | ||
748 | /* If parent now has only one child, | |
749 | put the child into the parent's place. */ | |
750 | ||
751 | tem = par->hchild; | |
265a9e55 | 752 | if (NILP (tem)) |
7ab12479 | 753 | tem = par->vchild; |
265a9e55 | 754 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 JB |
755 | replace_window (parent, tem); |
756 | return Qnil; | |
757 | } | |
758 | \f | |
7ab12479 JB |
759 | |
760 | extern Lisp_Object next_screen (), prev_screen (); | |
761 | ||
762 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
763 | "Return next window after WINDOW in canonical ordering of windows.\n\ | |
d5783c40 JB |
764 | If omitted, WINDOW defaults to the selected window.\n\ |
765 | \n\ | |
766 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
767 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
768 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
769 | minibuffer even if it is active.\n\ | |
770 | \n\ | |
771 | Several screens may share a single minibuffer; if the minibuffer\n\ | |
772 | counts, all windows on all screens that share that minibuffer count\n\ | |
773 | too. This means that next-window may be used to iterate through the\n\ | |
774 | set of windows even when the minibuffer is on another screen. If the\n\ | |
775 | minibuffer does not count, only windows from WINDOW's screen count.\n\ | |
776 | \n\ | |
777 | Optional third arg ALL-SCREENS t means include windows on all screens.\n\ | |
778 | ALL-SCREENS nil or omitted means cycle within the screens as specified\n\ | |
779 | above. If neither nil nor t, restrict to WINDOW's screen.") | |
780 | (window, minibuf, all_screens) | |
781 | register Lisp_Object window, minibuf, all_screens; | |
7ab12479 JB |
782 | { |
783 | register Lisp_Object tem; | |
d5783c40 | 784 | Lisp_Object start_window; |
7ab12479 | 785 | |
265a9e55 | 786 | if (NILP (window)) |
7ab12479 JB |
787 | window = selected_window; |
788 | else | |
789 | CHECK_WINDOW (window, 0); | |
790 | ||
d5783c40 JB |
791 | start_window = window; |
792 | ||
793 | /* minibuf == nil may or may not include minibuffers. | |
794 | Decide if it does. */ | |
265a9e55 | 795 | if (NILP (minibuf)) |
d5783c40 JB |
796 | minibuf = (minibuf_level ? Qt : Qlambda); |
797 | ||
798 | /* all_screens == nil doesn't specify which screens to include. | |
799 | Decide which screens it includes. */ | |
265a9e55 | 800 | if (NILP (all_screens)) |
d5783c40 JB |
801 | all_screens = (EQ (minibuf, Qt) |
802 | ? (SCREEN_MINIBUF_WINDOW | |
803 | (XSCREEN | |
804 | (WINDOW_SCREEN | |
805 | (XWINDOW (window))))) | |
806 | : Qnil); | |
807 | else if (! EQ (all_screens, Qt)) | |
808 | all_screens = Qnil; | |
7ab12479 JB |
809 | |
810 | /* Do this loop at least once, to get the next window, and perhaps | |
811 | again, if we hit the minibuffer and that is not acceptable. */ | |
812 | do | |
813 | { | |
814 | /* Find a window that actually has a next one. This loop | |
815 | climbs up the tree. */ | |
265a9e55 JB |
816 | while (tem = XWINDOW (window)->next, NILP (tem)) |
817 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 818 | window = tem; |
d5783c40 | 819 | else |
7ab12479 | 820 | { |
d5783c40 JB |
821 | /* We've reached the end of this screen. |
822 | Which other screens are acceptable? */ | |
7ab12479 JB |
823 | tem = WINDOW_SCREEN (XWINDOW (window)); |
824 | #ifdef MULTI_SCREEN | |
265a9e55 | 825 | if (! NILP (all_screens)) |
d5783c40 | 826 | tem = next_screen (tem, all_screens); |
7ab12479 JB |
827 | #endif |
828 | tem = SCREEN_ROOT_WINDOW (XSCREEN (tem)); | |
d5783c40 | 829 | |
7ab12479 JB |
830 | break; |
831 | } | |
832 | ||
833 | window = tem; | |
d5783c40 | 834 | |
7ab12479 JB |
835 | /* If we're in a combination window, find its first child and |
836 | recurse on that. Otherwise, we've found the window we want. */ | |
837 | while (1) | |
838 | { | |
265a9e55 | 839 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 840 | window = XWINDOW (window)->hchild; |
265a9e55 | 841 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
842 | window = XWINDOW (window)->vchild; |
843 | else break; | |
844 | } | |
845 | } | |
d5783c40 JB |
846 | /* Which windows are acceptible? |
847 | Exit the loop and accept this window if | |
7ab12479 | 848 | this isn't a minibuffer window, or |
d5783c40 JB |
849 | we're accepting minibuffer windows, or |
850 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 851 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 JB |
852 | && ! EQ (minibuf, Qt) |
853 | && window != start_window); | |
7ab12479 JB |
854 | |
855 | return window; | |
856 | } | |
857 | ||
858 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
d5783c40 JB |
859 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
860 | If omitted, WINDOW defaults to the selected window.\n\ | |
861 | \n\ | |
862 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
863 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
864 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
865 | minibuffer even if it is active.\n\ | |
866 | \n\ | |
867 | Several screens may share a single minibuffer; if the minibuffer\n\ | |
868 | counts, all windows on all screens that share that minibuffer count\n\ | |
869 | too. This means that previous-window may be used to iterate through\n\ | |
870 | the set of windows even when the minibuffer is on another screen. If\n\ | |
871 | the minibuffer does not count, only windows from WINDOW's screen\n\ | |
872 | count.\n\ | |
873 | \n\ | |
874 | Optional third arg ALL-SCREENS t means include windows on all screens.\n\ | |
875 | ALL-SCREENS nil or omitted means cycle within the screens as specified\n\ | |
876 | above. If neither nil nor t, restrict to WINDOW's screen.") | |
877 | (window, minibuf, all_screens) | |
878 | register Lisp_Object window, minibuf, all_screens; | |
7ab12479 JB |
879 | { |
880 | register Lisp_Object tem; | |
d5783c40 | 881 | Lisp_Object start_window; |
7ab12479 | 882 | |
265a9e55 | 883 | if (NILP (window)) |
7ab12479 JB |
884 | window = selected_window; |
885 | else | |
886 | CHECK_WINDOW (window, 0); | |
887 | ||
d5783c40 JB |
888 | start_window = window; |
889 | ||
890 | /* minibuf == nil may or may not include minibuffers. | |
891 | Decide if it does. */ | |
265a9e55 | 892 | if (NILP (minibuf)) |
d5783c40 JB |
893 | minibuf = (minibuf_level ? Qt : Qlambda); |
894 | ||
895 | /* all_screens == nil doesn't specify which screens to include. | |
896 | Decide which screens it includes. */ | |
265a9e55 | 897 | if (NILP (all_screens)) |
d5783c40 JB |
898 | all_screens = (EQ (minibuf, Qt) |
899 | ? (SCREEN_MINIBUF_WINDOW | |
900 | (XSCREEN | |
901 | (WINDOW_SCREEN | |
902 | (XWINDOW (window))))) | |
903 | : Qnil); | |
904 | else if (! EQ (all_screens, Qt)) | |
905 | all_screens = Qnil; | |
7ab12479 JB |
906 | |
907 | /* Do this loop at least once, to get the previous window, and perhaps | |
908 | again, if we hit the minibuffer and that is not acceptable. */ | |
909 | do | |
910 | { | |
911 | /* Find a window that actually has a previous one. This loop | |
912 | climbs up the tree. */ | |
265a9e55 JB |
913 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
914 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 915 | window = tem; |
d5783c40 | 916 | else |
7ab12479 | 917 | { |
d5783c40 JB |
918 | /* We have found the top window on the screen. |
919 | Which screens are acceptable? */ | |
7ab12479 JB |
920 | tem = WINDOW_SCREEN (XWINDOW (window)); |
921 | #ifdef MULTI_SCREEN | |
265a9e55 | 922 | if (! NILP (all_screens)) |
d5783c40 | 923 | tem = next_screen (tem, all_screens); |
7ab12479 JB |
924 | #endif |
925 | tem = SCREEN_ROOT_WINDOW (XSCREEN (tem)); | |
d5783c40 | 926 | |
7ab12479 JB |
927 | break; |
928 | } | |
929 | ||
930 | window = tem; | |
931 | /* If we're in a combination window, find its last child and | |
932 | recurse on that. Otherwise, we've found the window we want. */ | |
933 | while (1) | |
934 | { | |
265a9e55 | 935 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 936 | window = XWINDOW (window)->hchild; |
265a9e55 | 937 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
938 | window = XWINDOW (window)->vchild; |
939 | else break; | |
265a9e55 | 940 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
941 | window = tem; |
942 | } | |
943 | } | |
d5783c40 JB |
944 | /* Which windows are acceptable? |
945 | Exit the loop and accept this window if | |
7ab12479 | 946 | this isn't a minibuffer window, or |
d5783c40 JB |
947 | we're accepting minibuffer windows, or |
948 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 949 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 JB |
950 | && !EQ (minibuf, Qt) |
951 | && window != start_window); | |
7ab12479 JB |
952 | |
953 | return window; | |
954 | } | |
955 | ||
62c07cc7 | 956 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
7ab12479 JB |
957 | "Select the ARG'th different window on this screen.\n\ |
958 | All windows on current screen are arranged in a cyclic order.\n\ | |
959 | This command selects the window ARG steps away in that order.\n\ | |
960 | A negative ARG moves in the opposite order. If the optional second\n\ | |
961 | argument ALL_SCREENS is non-nil, cycle through all screens.") | |
962 | (n, all_screens) | |
963 | register Lisp_Object n, all_screens; | |
964 | { | |
965 | register int i; | |
966 | register Lisp_Object w; | |
967 | ||
968 | CHECK_NUMBER (n, 0); | |
969 | w = selected_window; | |
970 | i = XINT (n); | |
971 | ||
972 | while (i > 0) | |
973 | { | |
974 | w = Fnext_window (w, Qnil, all_screens); | |
975 | i--; | |
976 | } | |
977 | while (i < 0) | |
978 | { | |
979 | w = Fprevious_window (w, Qnil, all_screens); | |
980 | i++; | |
981 | } | |
982 | Fselect_window (w); | |
983 | return Qnil; | |
984 | } | |
985 | \f | |
986 | /* Look at all windows, performing an operation specified by TYPE | |
987 | with argument OBJ. | |
988 | If SCREENS is Qt, look at all screens, if Qnil, look at just the selected | |
989 | screen. If SCREENS is a screen, just look at windows on that screen. | |
990 | If MINI is non-zero, perform the operation on minibuffer windows too. | |
991 | */ | |
992 | ||
993 | enum window_loop | |
994 | { | |
995 | WINDOW_LOOP_UNUSED, | |
996 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
997 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
998 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
999 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1000 | GET_LARGEST_WINDOW, | |
1001 | UNSHOW_BUFFER, /* Arg is buffer */ | |
1002 | }; | |
1003 | ||
1004 | static Lisp_Object | |
1005 | window_loop (type, obj, mini, screens) | |
1006 | enum window_loop type; | |
1007 | register Lisp_Object obj, screens; | |
1008 | int mini; | |
1009 | { | |
1010 | register Lisp_Object w; | |
1011 | register Lisp_Object best_window; | |
1012 | register Lisp_Object next_window; | |
1013 | register Lisp_Object first_window; | |
1014 | SCREEN_PTR screen; | |
1015 | ||
1016 | /* If we're only looping through windows on a particular screen, | |
1017 | screen points to that screen. If we're looping through windows | |
1018 | on all screens, screen is 0. */ | |
1019 | if (SCREENP (screens)) | |
1020 | screen = XSCREEN (screens); | |
265a9e55 | 1021 | else if (NILP (screens)) |
7ab12479 JB |
1022 | screen = selected_screen; |
1023 | else | |
1024 | screen = 0; | |
1025 | ||
1026 | /* Pick a window to start with. */ | |
1027 | if (XTYPE (obj) == Lisp_Window) | |
1028 | first_window = obj; | |
1029 | else if (screen) | |
1030 | first_window = SCREEN_SELECTED_WINDOW (screen); | |
1031 | else | |
1032 | first_window = SCREEN_SELECTED_WINDOW (selected_screen); | |
1033 | ||
1034 | w = first_window; | |
1035 | best_window = Qnil; | |
1036 | do | |
1037 | { | |
1038 | /* Pick the next window now, since some operations will delete | |
1039 | the current window. */ | |
1040 | #ifdef MULTI_SCREEN | |
1041 | if (screen) | |
d5783c40 | 1042 | next_window = Fnext_window (w, (mini ? Qt : Qnil), Qlambda); |
7ab12479 JB |
1043 | else |
1044 | #endif /* MULTI_SCREEN */ | |
1045 | /* We know screen is 0, so we're looping through all screens. | |
1046 | Or we know this isn't a MULTI_SCREEN Emacs, so who cares? */ | |
1047 | next_window = Fnext_window (w, mini ? Qt : Qnil, Qt); | |
1048 | ||
1049 | if (!MINI_WINDOW_P (XWINDOW (w)) | |
1050 | || (mini && minibuf_level > 0)) | |
1051 | switch (type) | |
1052 | { | |
1053 | case GET_BUFFER_WINDOW: | |
1054 | #if 0 | |
1055 | /* Ignore invisible and iconified screens. */ | |
1056 | if (! SCREEN_VISIBLE_P (XSCREEN (WINDOW_SCREEN (XWINDOW (w)))) | |
1057 | || SCREEN_ICONIFIED_P (XSCREEN (WINDOW_SCREEN (XWINDOW (w))))) | |
1058 | break; | |
1059 | #endif | |
1060 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) | |
1061 | return w; | |
1062 | break; | |
1063 | ||
1064 | case GET_LRU_WINDOW: | |
1065 | /* t as arg means consider only full-width windows */ | |
265a9e55 | 1066 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) != screen->width) |
7ab12479 JB |
1067 | break; |
1068 | #if 0 | |
1069 | /* Ignore invisible and iconified screens. */ | |
1070 | if (! SCREEN_VISIBLE_P (XSCREEN (WINDOW_SCREEN (XWINDOW (w)))) | |
1071 | || SCREEN_ICONIFIED_P (XSCREEN (WINDOW_SCREEN (XWINDOW (w))))) | |
1072 | break; | |
1073 | #endif | |
1074 | /* Ignore dedicated windows and minibuffers. */ | |
1075 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1076 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1077 | break; |
265a9e55 | 1078 | if (NILP (best_window) |
7ab12479 JB |
1079 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1080 | > XFASTINT (XWINDOW (w)->use_time))) | |
1081 | best_window = w; | |
1082 | break; | |
1083 | ||
1084 | case DELETE_OTHER_WINDOWS: | |
1085 | if (XWINDOW (w) != XWINDOW (obj)) | |
1086 | Fdelete_window (w); | |
1087 | break; | |
1088 | ||
1089 | case DELETE_BUFFER_WINDOWS: | |
1090 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1091 | { | |
1092 | /* If we're deleting the buffer displayed in the only window | |
1093 | on the screen, find a new buffer to display there. */ | |
265a9e55 | 1094 | if (NILP (XWINDOW (w)->parent)) |
7ab12479 JB |
1095 | { |
1096 | Lisp_Object new_buffer = Fother_buffer (obj); | |
265a9e55 | 1097 | if (NILP (new_buffer)) |
7ab12479 JB |
1098 | new_buffer |
1099 | = Fget_buffer_create (build_string ("*scratch*")); | |
1100 | Fset_window_buffer (w, new_buffer); | |
1101 | Fset_buffer (XWINDOW (w)->buffer); | |
1102 | } | |
1103 | else | |
1104 | Fdelete_window (w); | |
1105 | } | |
1106 | break; | |
1107 | ||
1108 | case GET_LARGEST_WINDOW: | |
1109 | #if 0 | |
1110 | /* Ignore invisible and iconified screens. */ | |
1111 | if (! SCREEN_VISIBLE_P (XSCREEN (WINDOW_SCREEN (XWINDOW (w)))) | |
1112 | || SCREEN_ICONIFIED_P (XSCREEN (WINDOW_SCREEN (XWINDOW (w))))) | |
1113 | break; | |
1114 | #endif | |
1115 | /* Ignore dedicated windows and minibuffers. */ | |
1116 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1117 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1118 | break; |
1119 | { | |
1120 | struct window *best_window_ptr = XWINDOW (best_window); | |
1121 | struct window *w_ptr = XWINDOW (w); | |
265a9e55 | 1122 | if (NILP (best_window) || |
7ab12479 JB |
1123 | (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width)) |
1124 | > (XFASTINT (best_window_ptr->height) | |
1125 | * XFASTINT (best_window_ptr->width))) | |
1126 | best_window = w; | |
1127 | } | |
1128 | break; | |
1129 | ||
1130 | case UNSHOW_BUFFER: | |
1131 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1132 | { | |
1133 | /* Find another buffer to show in this window. */ | |
1134 | Lisp_Object another_buffer = Fother_buffer (obj); | |
265a9e55 | 1135 | if (NILP (another_buffer)) |
7ab12479 JB |
1136 | another_buffer |
1137 | = Fget_buffer_create (build_string ("*scratch*")); | |
1138 | Fset_window_buffer (w, another_buffer); | |
1139 | if (EQ (w, selected_window)) | |
1140 | Fset_buffer (XWINDOW (w)->buffer); | |
1141 | } | |
1142 | break; | |
1143 | } | |
1144 | w = next_window; | |
1145 | } | |
1146 | while (! EQ (w, first_window)); | |
1147 | ||
1148 | return best_window; | |
1149 | } | |
1150 | \f | |
1151 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, | |
1152 | "Return the window least recently selected or used for display.\n\ | |
1153 | If optional argument SCREENS is t, search all screens. If SCREEN is a\n\ | |
1154 | screen, search only that screen.\n") | |
1155 | (screens) | |
1156 | Lisp_Object screens; | |
1157 | { | |
1158 | register Lisp_Object w; | |
1159 | /* First try for a window that is full-width */ | |
1160 | w = window_loop (GET_LRU_WINDOW, Qt, 0, screens); | |
265a9e55 | 1161 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1162 | return w; |
1163 | /* If none of them, try the rest */ | |
1164 | return window_loop (GET_LRU_WINDOW, Qnil, 0, screens); | |
1165 | } | |
1166 | ||
1167 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1168 | "Return the largest window in area.\n\ | |
1169 | If optional argument SCREENS is t, search all screens. If SCREEN is a\n\ | |
1170 | screen, search only that screen.\n") | |
1171 | (screen) | |
1172 | Lisp_Object screen; | |
1173 | { | |
1174 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
1175 | screen); | |
1176 | } | |
1177 | ||
1178 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1179 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
1180 | If optional argument SCREENS is t, search all screens. If SCREEN is a\n\ | |
1181 | screen, search only that screen.\n") | |
1182 | (buffer, screen) | |
1183 | Lisp_Object buffer, screen; | |
1184 | { | |
1185 | buffer = Fget_buffer (buffer); | |
1186 | if (XTYPE (buffer) == Lisp_Buffer) | |
1187 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, screen); | |
1188 | else | |
1189 | return Qnil; | |
1190 | } | |
1191 | ||
1192 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1193 | 0, 1, "", | |
1194 | "Make WINDOW (or the selected window) fill its screen.\n\ | |
1195 | Only the screen WINDOW is on is affected.") | |
1196 | (window) | |
1197 | Lisp_Object window; | |
1198 | { | |
1199 | struct window *w; | |
1200 | int opoint = point; | |
1201 | struct buffer *obuf = current_buffer; | |
1202 | int top; | |
1203 | ||
265a9e55 | 1204 | if (NILP (window)) |
7ab12479 JB |
1205 | window = selected_window; |
1206 | else | |
1207 | CHECK_WINDOW (window, 0); | |
1208 | ||
1209 | w = XWINDOW (window); | |
1210 | top = XFASTINT (w->top); | |
1211 | ||
1212 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_SCREEN(w)); | |
1213 | ||
1214 | Fset_buffer (w->buffer); | |
1215 | SET_PT (marker_position (w->start)); | |
1216 | Frecenter (make_number (top)); | |
1217 | ||
1218 | set_buffer_internal (obuf); | |
1219 | SET_PT (opoint); | |
1220 | return Qnil; | |
1221 | } | |
1222 | ||
1223 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
1224 | 1, 1, "bDelete windows on (buffer): ", | |
1225 | "Delete all windows showing BUFFER.") | |
1226 | (buffer) | |
1227 | Lisp_Object buffer; | |
1228 | { | |
265a9e55 | 1229 | if (!NILP (buffer)) |
7ab12479 JB |
1230 | { |
1231 | buffer = Fget_buffer (buffer); | |
1232 | CHECK_BUFFER (buffer, 0); | |
1233 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, Qt); | |
1234 | } | |
1235 | return Qnil; | |
1236 | } | |
1237 | ||
1238 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1239 | Sreplace_buffer_in_windows, | |
1240 | 1, 1, "bReplace buffer in windows: ", | |
1241 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1242 | (buffer) | |
1243 | Lisp_Object buffer; | |
1244 | { | |
265a9e55 | 1245 | if (!NILP (buffer)) |
7ab12479 JB |
1246 | { |
1247 | buffer = Fget_buffer (buffer); | |
1248 | CHECK_BUFFER (buffer, 0); | |
1249 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1250 | } | |
1251 | return Qnil; | |
1252 | } | |
1253 | \f | |
1254 | /* Set the height of WINDOW and all its inferiors. */ | |
1255 | /* Normally the window is deleted if it gets too small. | |
1256 | nodelete nonzero means do not do this. | |
1257 | (The caller should check later and do so if appropriate) */ | |
1258 | ||
1259 | set_window_height (window, height, nodelete) | |
1260 | Lisp_Object window; | |
1261 | int height; | |
1262 | int nodelete; | |
1263 | { | |
1264 | register struct window *w = XWINDOW (window); | |
1265 | register struct window *c; | |
1266 | int oheight = XFASTINT (w->height); | |
1267 | int top, pos, lastbot, opos, lastobot; | |
1268 | Lisp_Object child; | |
1269 | ||
1270 | if (!nodelete | |
265a9e55 | 1271 | && ! NILP (w->parent) |
7ab12479 JB |
1272 | && height < window_min_height) |
1273 | { | |
1274 | Fdelete_window (window); | |
1275 | return; | |
1276 | } | |
1277 | ||
1278 | XFASTINT (w->last_modified) = 0; | |
1279 | windows_or_buffers_changed++; | |
1280 | XFASTINT (w->height) = height; | |
265a9e55 | 1281 | if (!NILP (w->hchild)) |
7ab12479 | 1282 | { |
265a9e55 | 1283 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1284 | { |
1285 | XWINDOW (child)->top = w->top; | |
1286 | set_window_height (child, height, nodelete); | |
1287 | } | |
1288 | } | |
265a9e55 | 1289 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1290 | { |
1291 | lastbot = top = XFASTINT (w->top); | |
1292 | lastobot = 0; | |
265a9e55 | 1293 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1294 | { |
1295 | c = XWINDOW (child); | |
1296 | ||
1297 | opos = lastobot + XFASTINT (c->height); | |
1298 | ||
1299 | XFASTINT (c->top) = lastbot; | |
1300 | ||
1301 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1302 | ||
1303 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1304 | set_window_height (child, pos + top - lastbot, 1); | |
1305 | ||
1306 | /* Now advance child to next window, | |
1307 | and set lastbot if child was not just deleted. */ | |
1308 | lastbot = pos + top; | |
1309 | lastobot = opos; | |
1310 | } | |
1311 | /* Now delete any children that became too small. */ | |
1312 | if (!nodelete) | |
265a9e55 | 1313 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1314 | { |
1315 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1316 | } | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | /* Recursively set width of WINDOW and its inferiors. */ | |
1321 | ||
1322 | set_window_width (window, width, nodelete) | |
1323 | Lisp_Object window; | |
1324 | int width; | |
1325 | int nodelete; | |
1326 | { | |
1327 | register struct window *w = XWINDOW (window); | |
1328 | register struct window *c; | |
1329 | int owidth = XFASTINT (w->width); | |
1330 | int left, pos, lastright, opos, lastoright; | |
1331 | Lisp_Object child; | |
1332 | ||
1333 | if (!nodelete && width < window_min_width) | |
1334 | { | |
1335 | Fdelete_window (window); | |
1336 | return; | |
1337 | } | |
1338 | ||
1339 | XFASTINT (w->last_modified) = 0; | |
1340 | windows_or_buffers_changed++; | |
1341 | XFASTINT (w->width) = width; | |
265a9e55 | 1342 | if (!NILP (w->vchild)) |
7ab12479 | 1343 | { |
265a9e55 | 1344 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1345 | { |
1346 | XWINDOW (child)->left = w->left; | |
1347 | set_window_width (child, width, nodelete); | |
1348 | } | |
1349 | } | |
265a9e55 | 1350 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1351 | { |
1352 | lastright = left = XFASTINT (w->left); | |
1353 | lastoright = 0; | |
265a9e55 | 1354 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1355 | { |
1356 | c = XWINDOW (child); | |
1357 | ||
1358 | opos = lastoright + XFASTINT (c->width); | |
1359 | ||
1360 | XFASTINT (c->left) = lastright; | |
1361 | ||
1362 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1363 | ||
1364 | /* Inhibit deletion for becoming too small */ | |
1365 | set_window_width (child, pos + left - lastright, 1); | |
1366 | ||
1367 | /* Now advance child to next window, | |
1368 | and set lastright if child was not just deleted. */ | |
1369 | lastright = pos + left, lastoright = opos; | |
1370 | } | |
1371 | /* Delete children that became too small */ | |
1372 | if (!nodelete) | |
265a9e55 | 1373 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1374 | { |
1375 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1376 | } | |
1377 | } | |
1378 | } | |
1379 | \f | |
1d8d96fa | 1380 | int window_select_count; |
7ab12479 JB |
1381 | |
1382 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1383 | "Make WINDOW display BUFFER as its contents.\n\ | |
1384 | BUFFER can be a buffer or buffer name.") | |
1385 | (window, buffer) | |
1386 | register Lisp_Object window, buffer; | |
1387 | { | |
1388 | register Lisp_Object tem; | |
1389 | register struct window *w = decode_window (window); | |
1390 | ||
1391 | buffer = Fget_buffer (buffer); | |
1392 | CHECK_BUFFER (buffer, 1); | |
1393 | ||
265a9e55 | 1394 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1395 | error ("Attempt to display deleted buffer"); |
1396 | ||
1397 | tem = w->buffer; | |
265a9e55 | 1398 | if (NILP (tem)) |
7ab12479 JB |
1399 | error ("Window is deleted"); |
1400 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1401 | is first being set up. */ | |
1402 | { | |
265a9e55 | 1403 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
7ab12479 JB |
1404 | error ("Window is dedicated to %s\n", tem); |
1405 | ||
1406 | unshow_buffer (w); | |
1407 | } | |
1408 | ||
1409 | w->buffer = buffer; | |
1410 | Fset_marker (w->pointm, | |
1411 | make_number (BUF_PT (XBUFFER (buffer))), | |
1412 | buffer); | |
1413 | set_marker_restricted (w->start, | |
1414 | make_number (XBUFFER (buffer)->last_window_start), | |
1415 | buffer); | |
1416 | w->start_at_line_beg = Qnil; | |
1417 | XFASTINT (w->last_modified) = 0; | |
1418 | windows_or_buffers_changed++; | |
1419 | if (EQ (window, selected_window)) | |
1420 | Fset_buffer (buffer); | |
1421 | ||
1422 | return Qnil; | |
1423 | } | |
1424 | ||
1425 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1426 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1427 | The main editor command loop selects the buffer of the selected window\n\ | |
1428 | before each command.") | |
1429 | (window) | |
1430 | register Lisp_Object window; | |
1431 | { | |
1432 | register struct window *w; | |
1433 | register struct window *ow = XWINDOW (selected_window); | |
1434 | ||
1435 | CHECK_WINDOW (window, 0); | |
1436 | ||
1437 | w = XWINDOW (window); | |
1438 | ||
265a9e55 | 1439 | if (NILP (w->buffer)) |
7ab12479 JB |
1440 | error ("Trying to select deleted window or non-leaf window"); |
1441 | ||
1442 | XFASTINT (w->use_time) = ++window_select_count; | |
1443 | if (EQ (window, selected_window)) | |
1444 | return window; | |
1445 | ||
1446 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1447 | ow->buffer); | |
1448 | ||
1449 | selected_window = window; | |
1450 | #ifdef MULTI_SCREEN | |
43bad991 | 1451 | if (XSCREEN (WINDOW_SCREEN (w)) != selected_screen) |
7ab12479 JB |
1452 | { |
1453 | XSCREEN (WINDOW_SCREEN (w))->selected_window = window; | |
1454 | Fselect_screen (WINDOW_SCREEN (w), Qnil); | |
1455 | } | |
1456 | else | |
1457 | selected_screen->selected_window = window; | |
1458 | #endif | |
1459 | ||
1460 | record_buffer (w->buffer); | |
1461 | Fset_buffer (w->buffer); | |
1462 | ||
1463 | /* Go to the point recorded in the window. | |
1464 | This is important when the buffer is in more | |
1465 | than one window. It also matters when | |
1466 | redisplay_window has altered point after scrolling, | |
1467 | because it makes the change only in the window. */ | |
1468 | { | |
1469 | register int new_point = marker_position (w->pointm); | |
1470 | if (new_point < BEGV) | |
1471 | SET_PT (BEGV); | |
1472 | if (new_point > ZV) | |
1473 | SET_PT (ZV); | |
1474 | else | |
1475 | SET_PT (new_point); | |
1476 | } | |
1477 | ||
1478 | windows_or_buffers_changed++; | |
1479 | return window; | |
1480 | } | |
1481 | ||
1482 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, 0, | |
1483 | "Make BUFFER appear in some window but don't select it.\n\ | |
1484 | BUFFER can be a buffer or a buffer name.\n\ | |
1485 | If BUFFER is shown already in some window, just use that one,\n\ | |
1486 | unless the window is the selected window and the optional second\n\ | |
1487 | argument NOT_THIS_WINDOW is non-nil.\n\ | |
1488 | Returns the window displaying BUFFER.") | |
1489 | (buffer, not_this_window) | |
1490 | register Lisp_Object buffer, not_this_window; | |
1491 | { | |
1492 | register Lisp_Object window; | |
1493 | ||
1494 | buffer = Fget_buffer (buffer); | |
1495 | CHECK_BUFFER (buffer, 0); | |
1496 | ||
265a9e55 | 1497 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1498 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1499 | ||
265a9e55 | 1500 | if (NILP (not_this_window) |
7ab12479 JB |
1501 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1502 | return selected_window; | |
1503 | ||
1504 | window = Fget_buffer_window (buffer, Qnil); | |
265a9e55 JB |
1505 | if (!NILP (window) |
1506 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
7ab12479 JB |
1507 | return window; |
1508 | ||
1509 | #ifdef MULTI_SCREEN | |
43bad991 JB |
1510 | /* If there are no screens open that have more than a minibuffer, |
1511 | we need to create a new screen. */ | |
1512 | if (pop_up_screens || last_nonminibuf_screen == 0) | |
7ab12479 JB |
1513 | { |
1514 | window | |
43bad991 | 1515 | = Fscreen_selected_window (call0 (Vpop_up_screen_function)); |
7ab12479 JB |
1516 | Fset_window_buffer (window, buffer); |
1517 | #if 0 | |
43bad991 | 1518 | Fselect_screen (XWINDOW (window)->screen, Qnil); |
7ab12479 JB |
1519 | #endif |
1520 | return window; | |
1521 | } | |
1522 | #endif /* MULTI_SCREEN */ | |
1523 | ||
43bad991 JB |
1524 | if (pop_up_windows |
1525 | #ifdef MULTI_SCREEN | |
d5783c40 | 1526 | || SCREEN_MINIBUF_ONLY_P (selected_screen) |
43bad991 JB |
1527 | #endif |
1528 | ) | |
7ab12479 | 1529 | { |
43bad991 JB |
1530 | Lisp_Object screens = Qnil; |
1531 | ||
7ab12479 | 1532 | #ifdef MULTI_SCREEN |
d5783c40 | 1533 | if (SCREEN_MINIBUF_ONLY_P (selected_screen)) |
43bad991 | 1534 | XSET (screens, Lisp_Screen, last_nonminibuf_screen); |
7ab12479 JB |
1535 | #endif |
1536 | /* Don't try to create a window if would get an error */ | |
1537 | if (split_height_threshold < window_min_height << 1) | |
1538 | split_height_threshold = window_min_height << 1; | |
1539 | ||
1540 | window = Fget_largest_window (screens); | |
1541 | ||
265a9e55 | 1542 | if (!NILP (window) |
7ab12479 JB |
1543 | && window_height (window) >= split_height_threshold |
1544 | && | |
1545 | (XFASTINT (XWINDOW (window)->width) | |
1546 | == SCREEN_WIDTH (XSCREEN (WINDOW_SCREEN (XWINDOW (window)))))) | |
1547 | window = Fsplit_window (window, Qnil, Qnil); | |
1548 | else | |
1549 | { | |
1550 | window = Fget_lru_window (screens); | |
1551 | if ((EQ (window, selected_window) | |
1552 | || EQ (XWINDOW (window)->parent, Qnil)) | |
1553 | && window_height (window) >= window_min_height << 1) | |
1554 | window = Fsplit_window (window, Qnil, Qnil); | |
1555 | } | |
1556 | } | |
1557 | else | |
1558 | window = Fget_lru_window (Qnil); | |
1559 | ||
1560 | Fset_window_buffer (window, buffer); | |
1561 | return window; | |
1562 | } | |
1563 | ||
1564 | void | |
1565 | temp_output_buffer_show (buf) | |
1566 | register Lisp_Object buf; | |
1567 | { | |
1568 | register struct buffer *old = current_buffer; | |
1569 | register Lisp_Object window; | |
1570 | register struct window *w; | |
1571 | ||
1572 | Fset_buffer (buf); | |
1573 | XBUFFER (buf)->save_modified = MODIFF; | |
1574 | BEGV = BEG; | |
1575 | ZV = Z; | |
1576 | SET_PT (BEG); | |
1577 | clip_changed = 1; | |
1578 | set_buffer_internal (old); | |
1579 | ||
1580 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
1581 | call1 (Vtemp_buffer_show_function, buf); | |
1582 | else | |
1583 | { | |
1584 | window = Fdisplay_buffer (buf, Qnil); | |
1585 | ||
1586 | #ifdef MULTI_SCREEN | |
1587 | if (XSCREEN (XWINDOW (window)->screen) != selected_screen) | |
1588 | Fmake_screen_visible (XWINDOW (window)->screen); | |
1589 | #endif /* MULTI_SCREEN */ | |
1590 | Vminibuf_scroll_window = window; | |
1591 | w = XWINDOW (window); | |
1592 | XFASTINT (w->hscroll) = 0; | |
1593 | set_marker_restricted (w->start, make_number (1), buf); | |
1594 | set_marker_restricted (w->pointm, make_number (1), buf); | |
1595 | } | |
1596 | } | |
1597 | \f | |
1598 | static | |
1599 | make_dummy_parent (window) | |
1600 | Lisp_Object window; | |
1601 | { | |
1602 | register Lisp_Object old, new; | |
1603 | register struct window *o, *p; | |
1604 | ||
1605 | old = window; | |
1606 | XSETTYPE (old, Lisp_Vector); | |
1607 | new = Fcopy_sequence (old); | |
1608 | XSETTYPE (new, Lisp_Window); | |
1609 | ||
1610 | o = XWINDOW (old); | |
1611 | p = XWINDOW (new); | |
1612 | XFASTINT (p->sequence_number) = ++sequence_number; | |
1613 | ||
1614 | /* Put new into window structure in place of window */ | |
1615 | replace_window (window, new); | |
1616 | ||
1617 | o->next = Qnil; | |
1618 | o->prev = Qnil; | |
1619 | o->vchild = Qnil; | |
1620 | o->hchild = Qnil; | |
1621 | o->parent = new; | |
1622 | ||
1623 | p->start = Qnil; | |
1624 | p->pointm = Qnil; | |
1625 | p->buffer = Qnil; | |
1626 | } | |
1627 | ||
1628 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
1629 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
1630 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
1631 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
1632 | and put SIZE columns in the first of the pair.") | |
1633 | (window, chsize, horflag) | |
1634 | Lisp_Object window, chsize, horflag; | |
1635 | { | |
1636 | register Lisp_Object new; | |
1637 | register struct window *o, *p; | |
1638 | register int size; | |
1639 | ||
265a9e55 | 1640 | if (NILP (window)) |
7ab12479 JB |
1641 | window = selected_window; |
1642 | else | |
1643 | CHECK_WINDOW (window, 0); | |
1644 | ||
1645 | o = XWINDOW (window); | |
1646 | ||
265a9e55 | 1647 | if (NILP (chsize)) |
7ab12479 | 1648 | { |
265a9e55 | 1649 | if (!NILP (horflag)) |
7ab12479 JB |
1650 | /* Round odd size up, since this is for the left-hand window, |
1651 | and it will lose a column for the separators. */ | |
1652 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
1653 | else | |
1654 | size = XFASTINT (o->height) >> 1; | |
1655 | } | |
1656 | else | |
1657 | { | |
1658 | CHECK_NUMBER (chsize, 1); | |
1659 | size = XINT (chsize); | |
1660 | } | |
1661 | ||
1662 | if (MINI_WINDOW_P (o)) | |
1663 | error ("Attempt to split minibuffer window"); | |
1664 | else if (SCREEN_NO_SPLIT_P (XSCREEN (WINDOW_SCREEN (o)))) | |
1665 | error ("Attempt to split unsplittable screen"); | |
1666 | ||
1667 | /* Smaller values might permit a crash. */ | |
1668 | if (window_min_width < 2) | |
1669 | window_min_width = 2; | |
1670 | if (window_min_height < 2) | |
1671 | window_min_height = 2; | |
1672 | ||
265a9e55 | 1673 | if (NILP (horflag)) |
7ab12479 JB |
1674 | { |
1675 | if (size < window_min_height | |
1676 | || size + window_min_height > XFASTINT (o->height)) | |
1677 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1678 | if (NILP (o->parent) |
1679 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
1680 | { |
1681 | make_dummy_parent (window); | |
1682 | new = o->parent; | |
1683 | XWINDOW (new)->vchild = window; | |
1684 | } | |
1685 | } | |
1686 | else | |
1687 | { | |
1688 | if (size < window_min_width | |
1689 | || size + window_min_width > XFASTINT (o->width)) | |
1690 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1691 | if (NILP (o->parent) |
1692 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
1693 | { |
1694 | make_dummy_parent (window); | |
1695 | new = o->parent; | |
1696 | XWINDOW (new)->hchild = window; | |
1697 | } | |
1698 | } | |
1699 | ||
1700 | /* Now we know that window's parent is a vertical combination | |
1701 | if we are dividing vertically, or a horizontal combination | |
1702 | if we are making side-by-side windows */ | |
1703 | ||
1704 | windows_or_buffers_changed++; | |
1705 | new = make_window (); | |
1706 | p = XWINDOW (new); | |
1707 | ||
1708 | p->screen = o->screen; | |
1709 | p->next = o->next; | |
265a9e55 | 1710 | if (!NILP (p->next)) |
7ab12479 JB |
1711 | XWINDOW (p->next)->prev = new; |
1712 | p->prev = window; | |
1713 | o->next = new; | |
1714 | p->parent = o->parent; | |
1715 | p->buffer = Qt; | |
1716 | ||
1717 | Fset_window_buffer (new, o->buffer); | |
1718 | ||
1719 | /* Apportion the available screen space among the two new windows */ | |
1720 | ||
265a9e55 | 1721 | if (!NILP (horflag)) |
7ab12479 JB |
1722 | { |
1723 | p->height = o->height; | |
1724 | p->top = o->top; | |
1725 | XFASTINT (p->width) = XFASTINT (o->width) - size; | |
1726 | XFASTINT (o->width) = size; | |
1727 | XFASTINT (p->left) = XFASTINT (o->left) + size; | |
1728 | } | |
1729 | else | |
1730 | { | |
1731 | p->left = o->left; | |
1732 | p->width = o->width; | |
1733 | XFASTINT (p->height) = XFASTINT (o->height) - size; | |
1734 | XFASTINT (o->height) = size; | |
1735 | XFASTINT (p->top) = XFASTINT (o->top) + size; | |
1736 | } | |
1737 | ||
1738 | return new; | |
1739 | } | |
1740 | \f | |
1741 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
1742 | "Make current window ARG lines bigger.\n\ | |
1743 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
1744 | (n, side) | |
1745 | register Lisp_Object n, side; | |
1746 | { | |
1747 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1748 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
1749 | return Qnil; |
1750 | } | |
1751 | ||
1752 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
1753 | "Make current window ARG lines smaller.\n\ | |
1754 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
1755 | (n, side) | |
1756 | register Lisp_Object n, side; | |
1757 | { | |
1758 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1759 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
1760 | return Qnil; |
1761 | } | |
1762 | ||
1763 | int | |
1764 | window_height (window) | |
1765 | Lisp_Object window; | |
1766 | { | |
1767 | register struct window *p = XWINDOW (window); | |
1768 | return XFASTINT (p->height); | |
1769 | } | |
1770 | ||
1771 | int | |
1772 | window_width (window) | |
1773 | Lisp_Object window; | |
1774 | { | |
1775 | register struct window *p = XWINDOW (window); | |
1776 | return XFASTINT (p->width); | |
1777 | } | |
1778 | ||
1779 | #define MINSIZE(w) \ | |
1780 | (widthflag ? window_min_width : window_min_height) | |
1781 | ||
1782 | #define CURBEG(w) \ | |
1783 | *(widthflag ? (int *) &(w)->left : (int *) &(w)->top) | |
1784 | ||
1785 | #define CURSIZE(w) \ | |
1786 | *(widthflag ? (int *) &(w)->width : (int *) &(w)->height) | |
1787 | ||
1788 | /* Unlike set_window_height, this function | |
1789 | also changes the heights of the siblings so as to | |
1790 | keep everything consistent. */ | |
1791 | ||
1792 | change_window_height (delta, widthflag) | |
1793 | register int delta; | |
1794 | int widthflag; | |
1795 | { | |
1796 | register Lisp_Object parent; | |
1797 | Lisp_Object window; | |
1798 | register struct window *p; | |
1799 | int *sizep; | |
1800 | int (*sizefun) () = widthflag ? window_width : window_height; | |
1801 | register int (*setsizefun) () = (widthflag | |
1802 | ? set_window_width | |
1803 | : set_window_height); | |
1804 | ||
1805 | /* Smaller values might permit a crash. */ | |
1806 | if (window_min_width < 2) | |
1807 | window_min_width = 2; | |
1808 | if (window_min_height < 2) | |
1809 | window_min_height = 2; | |
1810 | ||
1811 | window = selected_window; | |
1812 | while (1) | |
1813 | { | |
1814 | p = XWINDOW (window); | |
1815 | parent = p->parent; | |
265a9e55 | 1816 | if (NILP (parent)) |
7ab12479 JB |
1817 | { |
1818 | if (widthflag) | |
1819 | error ("No other window to side of this one"); | |
1820 | break; | |
1821 | } | |
265a9e55 JB |
1822 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
1823 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
1824 | break; |
1825 | window = parent; | |
1826 | } | |
1827 | ||
1828 | sizep = &CURSIZE (p); | |
1829 | ||
1830 | if (*sizep + delta < MINSIZE (p) | |
265a9e55 | 1831 | && !NILP (XWINDOW (window)->parent)) |
7ab12479 JB |
1832 | { |
1833 | Fdelete_window (window); | |
1834 | return; | |
1835 | } | |
1836 | ||
1837 | { | |
1838 | register int maxdelta; | |
7ab12479 | 1839 | |
265a9e55 JB |
1840 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
1841 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
1842 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
d5783c40 JB |
1843 | /* This is a screen with only one window, a minibuffer-only |
1844 | or a minibufferless screen. */ | |
1845 | : (delta = 0)); | |
7ab12479 JB |
1846 | |
1847 | if (delta > maxdelta) | |
1848 | /* This case traps trying to make the minibuffer | |
1849 | the full screen, or make the only window aside from the | |
1850 | minibuffer the full screen. */ | |
1851 | delta = maxdelta; | |
d5783c40 JB |
1852 | |
1853 | if (delta == 0) | |
1854 | return; | |
7ab12479 JB |
1855 | } |
1856 | ||
265a9e55 | 1857 | if (!NILP (p->next) && |
7ab12479 JB |
1858 | (*sizefun) (p->next) - delta >= MINSIZE (p->next)) |
1859 | { | |
1860 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
1861 | (*setsizefun) (window, *sizep + delta, 0); | |
1862 | CURBEG (XWINDOW (p->next)) += delta; | |
1863 | /* This does not change size of p->next, | |
1864 | but it propagates the new top edge to its children */ | |
1865 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
1866 | } | |
265a9e55 | 1867 | else if (!NILP (p->prev) && |
7ab12479 JB |
1868 | (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) |
1869 | { | |
1870 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
1871 | CURBEG (p) -= delta; | |
1872 | (*setsizefun) (window, *sizep + delta, 0); | |
1873 | } | |
1874 | else | |
1875 | { | |
1876 | register int delta1; | |
1877 | register int opht = (*sizefun) (parent); | |
1878 | ||
1879 | /* If trying to grow this window to or beyond size of the parent, | |
1880 | make delta1 so big that, on shrinking back down, | |
1881 | all the siblings end up with less than one line and are deleted. */ | |
1882 | if (opht <= *sizep + delta) | |
1883 | delta1 = opht * opht * 2; | |
1884 | /* Otherwise, make delta1 just right so that if we add delta1 | |
1885 | lines to this window and to the parent, and then shrink | |
1886 | the parent back to its original size, the new proportional | |
1887 | size of this window will increase by delta. */ | |
1888 | else | |
1889 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
1890 | ||
1891 | /* Add delta1 lines or columns to this window, and to the parent, | |
1892 | keeping things consistent while not affecting siblings. */ | |
1893 | CURSIZE (XWINDOW (parent)) = opht + delta1; | |
1894 | (*setsizefun) (window, *sizep + delta1, 0); | |
1895 | ||
1896 | /* Squeeze out delta1 lines or columns from our parent, | |
1897 | shriking this window and siblings proportionately. | |
1898 | This brings parent back to correct size. | |
1899 | Delta1 was calculated so this makes this window the desired size, | |
1900 | taking it all out of the siblings. */ | |
1901 | (*setsizefun) (parent, opht, 0); | |
1902 | } | |
1903 | ||
1904 | XFASTINT (p->last_modified) = 0; | |
1905 | } | |
1906 | #undef MINSIZE | |
1907 | #undef CURBEG | |
1908 | #undef CURSIZE | |
1909 | ||
1910 | \f | |
1911 | /* Return number of lines of text (not counting mode line) in W. */ | |
1912 | ||
1913 | int | |
1914 | window_internal_height (w) | |
1915 | struct window *w; | |
1916 | { | |
1917 | int ht = XFASTINT (w->height); | |
1918 | ||
1919 | if (MINI_WINDOW_P (w)) | |
1920 | return ht; | |
1921 | ||
265a9e55 JB |
1922 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
1923 | || !NILP (w->next) || !NILP (w->prev) | |
7ab12479 JB |
1924 | || SCREEN_WANTS_MODELINE_P (XSCREEN (WINDOW_SCREEN (w)))) |
1925 | return ht - 1; | |
1926 | ||
1927 | return ht; | |
1928 | } | |
1929 | ||
1930 | /* Scroll contents of window WINDOW up N lines. */ | |
1931 | ||
1932 | void | |
1933 | window_scroll (window, n) | |
1934 | Lisp_Object window; | |
1935 | int n; | |
1936 | { | |
1937 | register struct window *w = XWINDOW (window); | |
1938 | register int opoint = point; | |
1939 | register int pos; | |
1940 | register int ht = window_internal_height (w); | |
1941 | register Lisp_Object tem; | |
1942 | int lose; | |
1943 | Lisp_Object bolp, nmoved; | |
1944 | ||
1945 | XFASTINT (tem) = point; | |
1946 | tem = Fpos_visible_in_window_p (tem, window); | |
1947 | ||
265a9e55 | 1948 | if (NILP (tem)) |
7ab12479 JB |
1949 | { |
1950 | Fvertical_motion (make_number (- ht / 2)); | |
1951 | XFASTINT (tem) = point; | |
1952 | Fset_marker (w->start, tem, w->buffer); | |
1953 | w->force_start = Qt; | |
1954 | } | |
1955 | ||
1956 | SET_PT (marker_position (w->start)); | |
1957 | lose = n < 0 && point == BEGV; | |
1958 | Fvertical_motion (make_number (n)); | |
1959 | pos = point; | |
1960 | bolp = Fbolp (); | |
1961 | SET_PT (opoint); | |
1962 | ||
1963 | if (lose) | |
1964 | Fsignal (Qbeginning_of_buffer, Qnil); | |
1965 | ||
1966 | if (pos < ZV) | |
1967 | #if 0 | |
1968 | /* Allow scrolling to an empty screen (end of buffer) | |
1969 | if that is exactly how far we wanted to go. */ | |
1970 | || XINT (nmoved) == n) | |
1971 | #endif | |
1972 | { | |
1973 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
1974 | w->start_at_line_beg = bolp; | |
1975 | w->update_mode_line = Qt; | |
1976 | XFASTINT (w->last_modified) = 0; | |
1977 | if (pos > opoint) | |
1978 | SET_PT (pos); | |
1979 | if (n < 0) | |
1980 | { | |
1981 | SET_PT (pos); | |
1982 | tem = Fvertical_motion (make_number (ht)); | |
1983 | if (point > opoint || XFASTINT (tem) < ht) | |
1984 | SET_PT (opoint); | |
1985 | else | |
1986 | Fvertical_motion (make_number (-1)); | |
1987 | } | |
1988 | } | |
1989 | else | |
1990 | Fsignal (Qend_of_buffer, Qnil); | |
1991 | } | |
1992 | \f | |
1993 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
1994 | ||
1995 | static void | |
1996 | scroll_command (n, direction) | |
1997 | register Lisp_Object n; | |
1998 | int direction; | |
1999 | { | |
2000 | register int defalt; | |
2001 | int count = specpdl_ptr - specpdl; | |
2002 | ||
2003 | /* If selected window's buffer isn't current, make it current for the moment. | |
2004 | But don't screw up if window_scroll gets an error. */ | |
2005 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
2006 | { | |
2007 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2008 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2009 | } | |
2010 | ||
2011 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2012 | - next_screen_context_lines); | |
2013 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2014 | ||
265a9e55 | 2015 | if (NILP (n)) |
7ab12479 JB |
2016 | window_scroll (selected_window, defalt); |
2017 | else if (EQ (n, Qminus)) | |
2018 | window_scroll (selected_window, - defalt); | |
2019 | else | |
2020 | { | |
2021 | n = Fprefix_numeric_value (n); | |
2022 | window_scroll (selected_window, XINT (n) * direction); | |
2023 | } | |
2024 | ||
2025 | unbind_to (count, Qnil); | |
2026 | } | |
2027 | ||
2028 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2029 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2030 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2031 | When calling from a program, supply a number as argument or nil.") | |
2032 | (n) | |
2033 | Lisp_Object n; | |
2034 | { | |
2035 | scroll_command (n, 1); | |
2036 | return Qnil; | |
2037 | } | |
2038 | ||
2039 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2040 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2041 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2042 | When calling from a program, supply a number as argument or nil.") | |
2043 | (n) | |
2044 | Lisp_Object n; | |
2045 | { | |
2046 | scroll_command (n, -1); | |
2047 | return Qnil; | |
2048 | } | |
2049 | ||
2050 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2051 | "Scroll text of next window upward ARG lines; or near full screen if no ARG.\n\ | |
2052 | The next window is the one below the current one; or the one at the top\n\ | |
2053 | if the current one is at the bottom.\n\ | |
2054 | When calling from a program, supply a number as argument or nil.\n\ | |
2055 | \n\ | |
2056 | If in the minibuffer, `minibuf-scroll-window' if non-nil\n\ | |
2057 | specifies the window to scroll.\n\ | |
2058 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2059 | showing that buffer, popping the buffer up if necessary.") | |
2060 | (n) | |
2061 | register Lisp_Object n; | |
2062 | { | |
2063 | register Lisp_Object window; | |
2064 | register int ht; | |
2065 | register struct window *w; | |
2066 | register int count = specpdl_ptr - specpdl; | |
2067 | ||
2068 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2069 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2070 | window = Vminibuf_scroll_window; |
2071 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2072 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2073 | { |
2074 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2075 | if (NILP (window)) |
7ab12479 JB |
2076 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2077 | } | |
2078 | else | |
2079 | /* Nothing specified; pick a neighboring window. */ | |
2080 | window = Fnext_window (selected_window, Qnil, Qt); | |
2081 | CHECK_WINDOW (window, 0); | |
2082 | ||
2083 | if (EQ (window, selected_window)) | |
2084 | error ("There is no other window"); | |
2085 | ||
2086 | w = XWINDOW (window); | |
2087 | ht = window_internal_height (w); | |
2088 | ||
2089 | /* Don't screw up if window_scroll gets an error. */ | |
2090 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2091 | ||
2092 | Fset_buffer (w->buffer); | |
2093 | SET_PT (marker_position (w->pointm)); | |
2094 | ||
265a9e55 | 2095 | if (NILP (n)) |
7ab12479 JB |
2096 | window_scroll (window, ht - next_screen_context_lines); |
2097 | else if (EQ (n, Qminus)) | |
2098 | window_scroll (window, next_screen_context_lines - ht); | |
2099 | else | |
2100 | { | |
2101 | if (XTYPE (n) == Lisp_Cons) | |
2102 | n = Fcar (n); | |
2103 | CHECK_NUMBER (n, 0); | |
2104 | window_scroll (window, XINT (n)); | |
2105 | } | |
2106 | ||
2107 | Fset_marker (w->pointm, make_number (point), Qnil); | |
2108 | unbind_to (count); | |
2109 | ||
2110 | return Qnil; | |
2111 | } | |
2112 | \f | |
2113 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 1, 1, "P", | |
2114 | "Scroll selected window display ARG columns left.\n\ | |
2115 | Default for ARG is window width minus 2.") | |
2116 | (arg) | |
2117 | register Lisp_Object arg; | |
2118 | { | |
2119 | ||
265a9e55 | 2120 | if (NILP (arg)) |
7ab12479 JB |
2121 | XFASTINT (arg) = XFASTINT (XWINDOW (selected_window)->width) - 2; |
2122 | else | |
2123 | arg = Fprefix_numeric_value (arg); | |
2124 | ||
2125 | return | |
2126 | Fset_window_hscroll (selected_window, | |
2127 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2128 | + XINT (arg))); | |
2129 | } | |
2130 | ||
2131 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 1, 1, "P", | |
2132 | "Scroll selected window display ARG columns right.\n\ | |
2133 | Default for ARG is window width minus 2.") | |
2134 | (arg) | |
2135 | register Lisp_Object arg; | |
2136 | { | |
265a9e55 | 2137 | if (NILP (arg)) |
7ab12479 JB |
2138 | XFASTINT (arg) = XFASTINT (XWINDOW (selected_window)->width) - 2; |
2139 | else | |
2140 | arg = Fprefix_numeric_value (arg); | |
2141 | ||
2142 | return | |
2143 | Fset_window_hscroll (selected_window, | |
2144 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2145 | - XINT (arg))); | |
2146 | } | |
2147 | ||
2148 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
2149 | "Center point in window and redisplay screen. With ARG, put point on line ARG.\n\ | |
2150 | The desired position of point is always relative to the current window.\n\ | |
2151 | Just C-u as prefix means put point in the center of the screen.\n\ | |
2152 | No arg (i.e., it is nil) erases the entire screen and then\n\ | |
2153 | redraws with point in the center.") | |
2154 | (n) | |
2155 | register Lisp_Object n; | |
2156 | { | |
2157 | register struct window *w = XWINDOW (selected_window); | |
2158 | register int ht = window_internal_height (w); | |
2159 | register int opoint = point; | |
2160 | ||
265a9e55 | 2161 | if (NILP (n)) |
7ab12479 JB |
2162 | { |
2163 | extern int screen_garbaged; | |
2164 | ||
2165 | SET_SCREEN_GARBAGED (XSCREEN (WINDOW_SCREEN (w))); | |
2166 | XFASTINT (n) = ht / 2; | |
2167 | } | |
2168 | else if (XTYPE (n) == Lisp_Cons) /* Just C-u. */ | |
2169 | { | |
2170 | XFASTINT (n) = ht / 2; | |
2171 | } | |
2172 | else | |
2173 | { | |
2174 | n = Fprefix_numeric_value (n); | |
2175 | CHECK_NUMBER (n, 0); | |
2176 | } | |
2177 | ||
2178 | if (XINT (n) < 0) | |
2179 | XSETINT (n, XINT (n) + ht); | |
2180 | ||
2181 | XSETINT (n, - XINT (n)); | |
2182 | ||
2183 | Fvertical_motion (n); | |
2184 | Fset_marker (w->start, make_number (point), w->buffer); | |
2185 | w->start_at_line_beg = Fbolp (); | |
2186 | ||
2187 | SET_PT (opoint); | |
2188 | w->force_start = Qt; | |
2189 | ||
2190 | return Qnil; | |
2191 | } | |
2192 | \f | |
2193 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2194 | 1, 1, "P", | |
2195 | "Position point relative to window.\n\ | |
2196 | With no argument, position text at center of window.\n\ | |
2197 | An argument specifies screen line; zero means top of window,\n\ | |
2198 | negative means relative to bottom of window.") | |
2199 | (arg) | |
2200 | register Lisp_Object arg; | |
2201 | { | |
2202 | register struct window *w = XWINDOW (selected_window); | |
2203 | register int height = window_internal_height (w); | |
2204 | register int start; | |
2205 | ||
265a9e55 | 2206 | if (NILP (arg)) |
7ab12479 JB |
2207 | XFASTINT (arg) = height / 2; |
2208 | else | |
2209 | { | |
2210 | arg = Fprefix_numeric_value (arg); | |
2211 | if (XINT (arg) < 0) | |
2212 | XSETINT (arg, XINT (arg) + height); | |
2213 | } | |
2214 | ||
2215 | start = marker_position (w->start); | |
2216 | if (start < BEGV || start > ZV) | |
2217 | { | |
2218 | Fvertical_motion (make_number (- height / 2)); | |
2219 | Fset_marker (w->start, make_number (point), w->buffer); | |
2220 | w->start_at_line_beg = Fbolp (); | |
2221 | w->force_start = Qt; | |
2222 | } | |
2223 | else | |
2224 | SET_PT (start); | |
2225 | ||
2226 | return Fvertical_motion (arg); | |
2227 | } | |
2228 | \f | |
2229 | struct save_window_data | |
2230 | { | |
2231 | int size_from_Lisp_Vector_struct; | |
2232 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2233 | Lisp_Object screen_width, screen_height; | |
2234 | Lisp_Object current_window; | |
2235 | Lisp_Object current_buffer; | |
2236 | Lisp_Object minibuf_scroll_window; | |
2237 | Lisp_Object root_window; | |
2238 | /* A vector, interpreted as a struct saved_window */ | |
2239 | Lisp_Object saved_windows; | |
2240 | }; | |
2241 | #define SAVE_WINDOW_DATA_SIZE 7 /* Arg to Fmake_vector */ | |
2242 | ||
2243 | /* This is saved as a Lisp_Vector */ | |
2244 | struct saved_window | |
2245 | { | |
2246 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2247 | int size_from_Lisp_Vector_struct; | |
2248 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2249 | ||
2250 | Lisp_Object window; | |
2251 | Lisp_Object buffer, start, pointm, mark; | |
2252 | Lisp_Object left, top, width, height, hscroll; | |
2253 | Lisp_Object parent, prev; | |
2254 | Lisp_Object start_at_line_beg; | |
2255 | Lisp_Object display_table; | |
2256 | }; | |
2257 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2258 | ||
2259 | #define SAVED_WINDOW_N(swv,n) \ | |
2260 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2261 | ||
2262 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2263 | "T if OBJECT is a window-configration object.") | |
2264 | (obj) | |
2265 | Lisp_Object obj; | |
2266 | { | |
2267 | if (XTYPE (obj) == Lisp_Window_Configuration) | |
2268 | return Qt; | |
2269 | return Qnil; | |
2270 | } | |
2271 | ||
2272 | ||
2273 | DEFUN ("set-window-configuration", | |
2274 | Fset_window_configuration, Sset_window_configuration, | |
2275 | 1, 1, 0, | |
2276 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ | |
2277 | CONFIGURATION must be a value previously returned\n\ | |
2278 | by `current-window-configuration' (which see).") | |
2279 | (arg) | |
2280 | Lisp_Object arg; | |
2281 | { | |
2282 | register struct window *w; | |
2283 | register struct save_window_data *data; | |
2284 | struct Lisp_Vector *saved_windows; | |
2285 | register struct saved_window *p; | |
2286 | register Lisp_Object tem; | |
2287 | Lisp_Object new_current_buffer; | |
2288 | int k; | |
43bad991 | 2289 | SCREEN_PTR s; |
7ab12479 JB |
2290 | |
2291 | while (XTYPE (arg) != Lisp_Window_Configuration) | |
2292 | { | |
2293 | arg = wrong_type_argument (intern ("window-configuration-p"), arg); | |
2294 | } | |
2295 | ||
2296 | data = (struct save_window_data *) XVECTOR (arg); | |
2297 | saved_windows = XVECTOR (data->saved_windows); | |
2298 | ||
2299 | s = XSCREEN (XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->screen); | |
2300 | ||
2301 | if (XFASTINT (data->screen_height) != SCREEN_HEIGHT (s) | |
2302 | || XFASTINT (data->screen_width) != SCREEN_WIDTH (s)) | |
2303 | { | |
2304 | /* Presumably something clever could be done. | |
2305 | However, it doesn't seem worth the effort */ | |
2306 | error ("Screen size %dx%d in saved window configuration mismatches screen.", | |
2307 | XFASTINT (data->screen_height), | |
2308 | XFASTINT (data->screen_width)); | |
2309 | } | |
2310 | ||
2311 | windows_or_buffers_changed++; | |
2312 | new_current_buffer = data->current_buffer; | |
265a9e55 | 2313 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2314 | new_current_buffer = Qnil; |
2315 | ||
2316 | /* Mark all windows now on screen as "deleted". | |
2317 | Restoring the new configuration "undeletes" any that are in it. */ | |
2318 | ||
43bad991 | 2319 | delete_all_subwindows (XWINDOW (SCREEN_ROOT_WINDOW (s))); |
7ab12479 JB |
2320 | #if 0 |
2321 | /* This loses when the minibuf screen is not s. */ | |
2322 | delete_all_subwindows (XWINDOW (XWINDOW (minibuf_window)->prev)); | |
2323 | #endif | |
2324 | ||
2325 | for (k = 0; k < saved_windows->size; k++) | |
2326 | { | |
2327 | p = SAVED_WINDOW_N (saved_windows, k); | |
2328 | w = XWINDOW (p->window); | |
2329 | w->next = Qnil; | |
2330 | ||
265a9e55 | 2331 | if (!NILP (p->parent)) |
7ab12479 JB |
2332 | w->parent = SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window; |
2333 | else | |
2334 | w->parent = Qnil; | |
2335 | ||
265a9e55 | 2336 | if (!NILP (p->prev)) |
7ab12479 JB |
2337 | { |
2338 | w->prev = SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window; | |
2339 | #ifdef MULTI_SCREEN | |
2340 | /* This is true for a minibuffer-only screen. */ | |
2341 | if (w->mini_p && EQ (w->prev, p->window)) | |
2342 | w->next = Qnil; | |
2343 | else | |
2344 | #endif /* MULTI_SCREEN */ | |
2345 | XWINDOW (w->prev)->next = p->window; | |
2346 | } | |
2347 | else | |
2348 | { | |
2349 | w->prev = Qnil; | |
265a9e55 | 2350 | if (!NILP (w->parent)) |
7ab12479 JB |
2351 | { |
2352 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
2353 | { | |
2354 | XWINDOW (w->parent)->vchild = p->window; | |
2355 | XWINDOW (w->parent)->hchild = Qnil; | |
2356 | } | |
2357 | else | |
2358 | { | |
2359 | XWINDOW (w->parent)->hchild = p->window; | |
2360 | XWINDOW (w->parent)->vchild = Qnil; | |
2361 | } | |
2362 | } | |
2363 | } | |
2364 | w->left = p->left; | |
2365 | w->top = p->top; | |
2366 | w->width = p->width; | |
2367 | w->height = p->height; | |
2368 | w->hscroll = p->hscroll; | |
2369 | w->display_table = p->display_table; | |
2370 | XFASTINT (w->last_modified) = 0; | |
2371 | ||
2372 | /* Reinstall the saved buffer and pointers into it. */ | |
265a9e55 | 2373 | if (NILP (p->buffer)) |
7ab12479 JB |
2374 | w->buffer = p->buffer; |
2375 | else | |
2376 | { | |
265a9e55 | 2377 | if (!NILP (XBUFFER (p->buffer)->name)) |
7ab12479 JB |
2378 | /* If saved buffer is alive, install it. */ |
2379 | { | |
2380 | w->buffer = p->buffer; | |
2381 | w->start_at_line_beg = p->start_at_line_beg; | |
2382 | set_marker_restricted (w->start, Fmarker_position (p->start), w->buffer); | |
2383 | set_marker_restricted (w->pointm, Fmarker_position (p->pointm), w->buffer); | |
2384 | Fset_marker (XBUFFER (w->buffer)->mark, | |
2385 | Fmarker_position (p->mark), w->buffer); | |
2386 | ||
2387 | if (!EQ (p->buffer, new_current_buffer) && | |
2388 | XBUFFER (p->buffer) == current_buffer) | |
2389 | Fgoto_char (w->pointm); | |
2390 | } | |
265a9e55 | 2391 | else if (NILP (XBUFFER (w->buffer)->name)) |
7ab12479 JB |
2392 | /* Else if window's old buffer is dead too, get a live one. */ |
2393 | { | |
2394 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); | |
2395 | /* This will set the markers to beginning of visible range. */ | |
2396 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2397 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
2398 | w->start_at_line_beg = Qt; | |
2399 | } | |
2400 | else | |
2401 | /* Keeping window's old buffer; make sure the markers are real. */ | |
2402 | /* Else if window's old buffer is dead too, get a live one. */ | |
2403 | { | |
2404 | /* Set window markers at start of visible range. */ | |
2405 | if (XMARKER (w->start)->buffer == 0) | |
2406 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2407 | if (XMARKER (w->pointm)->buffer == 0) | |
2408 | set_marker_restricted (w->pointm, | |
2409 | make_number (BUF_PT (XBUFFER (w->buffer))), | |
2410 | w->buffer); | |
2411 | w->start_at_line_beg = Qt; | |
2412 | } | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | SCREEN_ROOT_WINDOW (s) = data->root_window; | |
2417 | ||
2418 | #ifdef MULTI_SCREEN | |
2419 | if (s != selected_screen && ! SCREEN_IS_TERMCAP (s)) | |
2420 | Fselect_screen (WINDOW_SCREEN (XWINDOW (data->root_window)), Qnil); | |
2421 | #endif | |
2422 | ||
2423 | if (s == selected_screen) | |
2424 | { | |
2425 | Fselect_window (data->current_window); | |
265a9e55 | 2426 | if (!NILP (new_current_buffer)) |
7ab12479 JB |
2427 | Fset_buffer (new_current_buffer); |
2428 | else | |
2429 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2430 | } | |
2431 | ||
2432 | Vminibuf_scroll_window = data->minibuf_scroll_window; | |
2433 | return (Qnil); | |
2434 | } | |
2435 | ||
2436 | /* Mark all windows now on screen as deleted | |
2437 | by setting their buffers to nil. */ | |
2438 | ||
2439 | static void | |
2440 | delete_all_subwindows (w) | |
2441 | register struct window *w; | |
2442 | { | |
2443 | register int count = 1; | |
2444 | w->buffer = Qnil; | |
265a9e55 | 2445 | if (!NILP (w->next)) |
7ab12479 | 2446 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 2447 | if (!NILP (w->vchild)) |
7ab12479 | 2448 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 2449 | if (!NILP (w->hchild)) |
7ab12479 JB |
2450 | delete_all_subwindows (XWINDOW (w->hchild)); |
2451 | } | |
2452 | \f | |
2453 | static int | |
2454 | count_windows (window) | |
2455 | register struct window *window; | |
2456 | { | |
2457 | register int count = 1; | |
265a9e55 | 2458 | if (!NILP (window->next)) |
7ab12479 | 2459 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 2460 | if (!NILP (window->vchild)) |
7ab12479 | 2461 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 2462 | if (!NILP (window->hchild)) |
7ab12479 JB |
2463 | count += count_windows (XWINDOW (window->hchild)); |
2464 | return count; | |
2465 | } | |
2466 | ||
2467 | static int | |
2468 | save_window_save (window, vector, i) | |
2469 | Lisp_Object window; | |
2470 | struct Lisp_Vector *vector; | |
2471 | int i; | |
2472 | { | |
2473 | register struct saved_window *p; | |
2474 | register struct window *w; | |
2475 | register Lisp_Object tem; | |
2476 | ||
265a9e55 | 2477 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
2478 | { |
2479 | p = SAVED_WINDOW_N (vector, i); | |
2480 | w = XWINDOW (window); | |
2481 | ||
2482 | XFASTINT (w->temslot) = i++; | |
2483 | p->window = window; | |
2484 | p->buffer = w->buffer; | |
2485 | p->left = w->left; | |
2486 | p->top = w->top; | |
2487 | p->width = w->width; | |
2488 | p->height = w->height; | |
2489 | p->hscroll = w->hscroll; | |
2490 | p->display_table = w->display_table; | |
265a9e55 | 2491 | if (!NILP (w->buffer)) |
7ab12479 JB |
2492 | { |
2493 | /* Save w's value of point in the window configuration. | |
2494 | If w is the selected window, then get the value of point | |
2495 | from the buffer; pointm is garbage in the selected window. */ | |
2496 | if (EQ (window, selected_window)) | |
2497 | { | |
2498 | p->pointm = Fmake_marker (); | |
2499 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
2500 | w->buffer); | |
2501 | } | |
2502 | else | |
2503 | p->pointm = Fcopy_marker (w->pointm); | |
2504 | ||
2505 | p->start = Fcopy_marker (w->start); | |
2506 | p->start_at_line_beg = w->start_at_line_beg; | |
2507 | ||
2508 | tem = XBUFFER (w->buffer)->mark; | |
2509 | p->mark = Fcopy_marker (tem); | |
2510 | } | |
2511 | else | |
2512 | { | |
2513 | p->pointm = Qnil; | |
2514 | p->start = Qnil; | |
2515 | p->mark = Qnil; | |
2516 | p->start_at_line_beg = Qnil; | |
2517 | } | |
2518 | ||
265a9e55 | 2519 | if (NILP (w->parent)) |
7ab12479 JB |
2520 | p->parent = Qnil; |
2521 | else | |
2522 | p->parent = XWINDOW (w->parent)->temslot; | |
2523 | ||
265a9e55 | 2524 | if (NILP (w->prev)) |
7ab12479 JB |
2525 | p->prev = Qnil; |
2526 | else | |
2527 | p->prev = XWINDOW (w->prev)->temslot; | |
2528 | ||
265a9e55 | 2529 | if (!NILP (w->vchild)) |
7ab12479 | 2530 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 2531 | if (!NILP (w->hchild)) |
7ab12479 JB |
2532 | i = save_window_save (w->hchild, vector, i); |
2533 | } | |
2534 | ||
2535 | return i; | |
2536 | } | |
2537 | ||
2538 | DEFUN ("current-window-configuration", | |
43bad991 JB |
2539 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
2540 | "Return an object representing the current window configuration of SCREEN.\n\ | |
2541 | If SCREEN is nil or omitted, use the selected screen.\n\ | |
7ab12479 JB |
2542 | This describes the number of windows, their sizes and current buffers,\n\ |
2543 | and for each displayed buffer, where display starts, and the positions of\n\ | |
2544 | point and mark. An exception is made for point in the current buffer:\n\ | |
2545 | its value is -not- saved.") | |
43bad991 JB |
2546 | (screen) |
2547 | Lisp_Object screen; | |
7ab12479 JB |
2548 | { |
2549 | register Lisp_Object tem; | |
2550 | register int n_windows; | |
2551 | register struct save_window_data *data; | |
2552 | register int i; | |
43bad991 JB |
2553 | SCREEN_PTR s; |
2554 | ||
265a9e55 | 2555 | if (NILP (screen)) |
43bad991 JB |
2556 | s = selected_screen; |
2557 | else | |
2558 | { | |
d5783c40 | 2559 | CHECK_LIVE_SCREEN (screen, 0); |
43bad991 JB |
2560 | s = XSCREEN (screen); |
2561 | } | |
7ab12479 | 2562 | |
43bad991 | 2563 | n_windows = count_windows (XWINDOW (SCREEN_ROOT_WINDOW (s))); |
7ab12479 JB |
2564 | data = (struct save_window_data *) |
2565 | XVECTOR (Fmake_vector (make_number (SAVE_WINDOW_DATA_SIZE), | |
2566 | Qnil)); | |
43bad991 JB |
2567 | XFASTINT (data->screen_width) = SCREEN_WIDTH (s); |
2568 | XFASTINT (data->screen_height) = SCREEN_HEIGHT (s); | |
2569 | data->current_window = SCREEN_SELECTED_WINDOW (s); | |
7ab12479 JB |
2570 | XSET (data->current_buffer, Lisp_Buffer, current_buffer); |
2571 | data->minibuf_scroll_window = Vminibuf_scroll_window; | |
43bad991 | 2572 | data->root_window = SCREEN_ROOT_WINDOW (s); |
7ab12479 JB |
2573 | tem = Fmake_vector (make_number (n_windows), Qnil); |
2574 | data->saved_windows = tem; | |
2575 | for (i = 0; i < n_windows; i++) | |
2576 | XVECTOR (tem)->contents[i] | |
2577 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
43bad991 | 2578 | save_window_save (SCREEN_ROOT_WINDOW (s), |
7ab12479 JB |
2579 | XVECTOR (tem), 0); |
2580 | XSET (tem, Lisp_Window_Configuration, data); | |
2581 | return (tem); | |
2582 | } | |
2583 | ||
2584 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
2585 | 0, UNEVALLED, 0, | |
2586 | "Execute body, preserving window sizes and contents.\n\ | |
2587 | Restores which buffer appears in which window, where display starts,\n\ | |
2588 | as well as the current buffer.\n\ | |
2589 | Does not restore the value of point in current buffer.") | |
2590 | (args) | |
2591 | Lisp_Object args; | |
2592 | { | |
2593 | register Lisp_Object val; | |
2594 | register int count = specpdl_ptr - specpdl; | |
2595 | ||
2596 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 2597 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
2598 | val = Fprogn (args); |
2599 | return unbind_to (count, val); | |
2600 | } | |
2601 | \f | |
2602 | init_window_once () | |
2603 | { | |
2604 | #ifdef MULTI_SCREEN | |
2605 | selected_screen = make_terminal_screen (); | |
2606 | minibuf_window = selected_screen->minibuffer_window; | |
2607 | selected_window = selected_screen->selected_window; | |
d5783c40 | 2608 | last_nonminibuf_screen = selected_screen; |
7ab12479 JB |
2609 | #else /* not MULTI_SCREEN */ |
2610 | extern Lisp_Object get_minibuffer (); | |
2611 | ||
2612 | root_window = make_window (0); | |
2613 | minibuf_window = make_window (0); | |
2614 | ||
2615 | XWINDOW (root_window)->next = minibuf_window; | |
2616 | XWINDOW (minibuf_window)->prev = root_window; | |
2617 | ||
2618 | /* These values 9 and 10 are arbitrary, | |
2619 | just so that there is "something there." | |
2620 | Correct values are put in in init_xdisp */ | |
2621 | ||
2622 | XFASTINT (XWINDOW (root_window)->width) = 10; | |
2623 | XFASTINT (XWINDOW (minibuf_window)->width) = 10; | |
2624 | ||
2625 | XFASTINT (XWINDOW (root_window)->height) = 9; | |
2626 | XFASTINT (XWINDOW (minibuf_window)->top) = 9; | |
2627 | XFASTINT (XWINDOW (minibuf_window)->height) = 1; | |
2628 | ||
2629 | /* Prevent error in Fset_window_buffer. */ | |
2630 | XWINDOW (root_window)->buffer = Qt; | |
2631 | XWINDOW (minibuf_window)->buffer = Qt; | |
2632 | ||
2633 | /* Now set them up for real. */ | |
2634 | Fset_window_buffer (root_window, Fcurrent_buffer ()); | |
2635 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); | |
2636 | ||
2637 | selected_window = root_window; | |
1d8d96fa JB |
2638 | /* Make sure this window seems more recently used than |
2639 | a newly-created, never-selected window. Increment | |
2640 | window_select_count so the first selection ever will get | |
2641 | something newer than this. */ | |
2642 | XFASTINT (XWINDOW (selected_window)->use_time) = ++window_select_count; | |
7ab12479 JB |
2643 | #endif /* not MULTI_SCREEN */ |
2644 | } | |
2645 | ||
2646 | syms_of_window () | |
2647 | { | |
2648 | Qwindowp = intern ("windowp"); | |
2649 | staticpro (&Qwindowp); | |
2650 | ||
2651 | /* Make sure all windows get marked */ | |
2652 | staticpro (&minibuf_window); | |
2653 | ||
2654 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
2655 | "Non-nil means call as function to display a help buffer.\n\ | |
2656 | Used by `with-output-to-temp-buffer'."); | |
2657 | Vtemp_buffer_show_function = Qnil; | |
2658 | ||
2659 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
2660 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
2661 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
2662 | that the currently selected window is not acceptable.\n\ | |
2663 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
2664 | work using this function."); | |
2665 | Vdisplay_buffer_function = Qnil; | |
2666 | ||
2667 | DEFVAR_LISP ("mouse-window", &Vmouse_window, | |
2668 | "Window that the last mouse click occurred on."); | |
2669 | Vmouse_window = Qnil; | |
2670 | ||
2671 | DEFVAR_LISP ("mouse-event", &Vmouse_event, | |
2672 | "The last mouse-event object. A list of four elements:\n\ | |
2673 | ((X-POS Y-POS) WINDOW SCREEN-PART KEYSEQ).\n\ | |
2674 | KEYSEQ is a string, the key sequence to be looked up in the mouse maps.\n\ | |
2675 | WINDOW is the window that the click applies do.\n\ | |
2676 | If SCREEN-PART is non-nil, the event was on a scrollbar;\n\ | |
2677 | then Y-POS is really the total length of the scrollbar, while X-POS is\n\ | |
2678 | the relative position of the scrollbar's value within that total length.\n\ | |
2679 | SCREEN-PART is one of the following symbols:\n\ | |
2680 | `vertical-scrollbar', `vertical-slider',\n\ | |
2681 | `vertical-thumbup', `vertical-thumbdown',\n\ | |
2682 | `horizontal-scrollbar', `horizontal-slider',\n\ | |
2683 | `horizontal-thumbleft', `horizontal-thumbright'"); | |
2684 | Vmouse_event = Qnil; | |
2685 | ||
2686 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, | |
2687 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
2688 | Vminibuf_scroll_window = Qnil; | |
2689 | ||
2690 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
2691 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
2692 | Vother_window_scroll_buffer = Qnil; | |
2693 | ||
2694 | #ifdef MULTI_SCREEN | |
43bad991 | 2695 | DEFVAR_BOOL ("pop-up-screens", &pop_up_screens, |
7ab12479 | 2696 | "*Non-nil means `display-buffer' should make a separate X-window."); |
43bad991 | 2697 | pop_up_screens = 0; |
7ab12479 | 2698 | |
43bad991 | 2699 | DEFVAR_LISP ("pop-up-screen-function", &Vpop_up_screen_function, |
7ab12479 JB |
2700 | "*If non-nil, function to call to handle automatic new screen creation.\n\ |
2701 | It is called with no arguments and should return a newly created screen.\n\ | |
7ab12479 JB |
2702 | \n\ |
2703 | A typical value might be `(lambda () (x-create-screen auto-screen-parms))'\n\ | |
2704 | where `auto-screen-parms' would hold the default screen parameters."); | |
43bad991 | 2705 | Vpop_up_screen_function = Qnil; |
7ab12479 JB |
2706 | #endif |
2707 | ||
2708 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, | |
2709 | "*Non-nil means display-buffer should make new windows."); | |
2710 | pop_up_windows = 1; | |
2711 | ||
2712 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
2713 | "*Number of lines of continuity when scrolling by screenfuls."); | |
2714 | next_screen_context_lines = 2; | |
2715 | ||
2716 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
2717 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
2718 | If there is only one window, it is split regardless of this value."); | |
2719 | split_height_threshold = 500; | |
2720 | ||
2721 | DEFVAR_INT ("window-min-height", &window_min_height, | |
2722 | "*Delete any window less than this tall (including its mode line)."); | |
2723 | window_min_height = 4; | |
2724 | ||
2725 | DEFVAR_INT ("window-min-width", &window_min_width, | |
2726 | "*Delete any window less than this wide."); | |
2727 | window_min_width = 10; | |
2728 | ||
2729 | defsubr (&Sselected_window); | |
2730 | defsubr (&Sminibuffer_window); | |
2731 | defsubr (&Swindow_minibuffer_p); | |
2732 | defsubr (&Swindowp); | |
2733 | defsubr (&Spos_visible_in_window_p); | |
2734 | defsubr (&Swindow_buffer); | |
2735 | defsubr (&Swindow_height); | |
2736 | defsubr (&Swindow_width); | |
2737 | defsubr (&Swindow_hscroll); | |
2738 | defsubr (&Sset_window_hscroll); | |
2739 | defsubr (&Swindow_edges); | |
d5783c40 JB |
2740 | defsubr (&Scoordinates_in_window_p); |
2741 | defsubr (&Swindow_at); | |
7ab12479 JB |
2742 | defsubr (&Swindow_point); |
2743 | defsubr (&Swindow_start); | |
2744 | defsubr (&Swindow_end); | |
2745 | defsubr (&Sset_window_point); | |
2746 | defsubr (&Sset_window_start); | |
2747 | defsubr (&Swindow_dedicated_p); | |
2748 | defsubr (&Sset_window_buffer_dedicated); | |
2749 | defsubr (&Swindow_display_table); | |
2750 | defsubr (&Sset_window_display_table); | |
2751 | defsubr (&Snext_window); | |
2752 | defsubr (&Sprevious_window); | |
2753 | defsubr (&Sother_window); | |
2754 | defsubr (&Sget_lru_window); | |
2755 | defsubr (&Sget_largest_window); | |
2756 | defsubr (&Sget_buffer_window); | |
2757 | defsubr (&Sdelete_other_windows); | |
2758 | defsubr (&Sdelete_windows_on); | |
2759 | defsubr (&Sreplace_buffer_in_windows); | |
2760 | defsubr (&Sdelete_window); | |
2761 | defsubr (&Sset_window_buffer); | |
2762 | defsubr (&Sselect_window); | |
2763 | defsubr (&Sdisplay_buffer); | |
2764 | defsubr (&Ssplit_window); | |
2765 | defsubr (&Senlarge_window); | |
2766 | defsubr (&Sshrink_window); | |
2767 | defsubr (&Sscroll_up); | |
2768 | defsubr (&Sscroll_down); | |
2769 | defsubr (&Sscroll_left); | |
2770 | defsubr (&Sscroll_right); | |
2771 | defsubr (&Sscroll_other_window); | |
2772 | defsubr (&Srecenter); | |
2773 | defsubr (&Smove_to_window_line); | |
2774 | defsubr (&Swindow_configuration_p); | |
2775 | defsubr (&Sset_window_configuration); | |
2776 | defsubr (&Scurrent_window_configuration); | |
2777 | defsubr (&Ssave_window_excursion); | |
2778 | } | |
2779 | ||
2780 | keys_of_window () | |
2781 | { | |
2782 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
2783 | initial_define_key (control_x_map, '2', "split-window"); | |
2784 | initial_define_key (control_x_map, '0', "delete-window"); | |
2785 | initial_define_key (control_x_map, 'o', "other-window"); | |
2786 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
2787 | initial_define_key (control_x_map, '<', "scroll-left"); | |
2788 | initial_define_key (control_x_map, '>', "scroll-right"); | |
2789 | ||
2790 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
2791 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
2792 | initial_define_key (meta_map, 'v', "scroll-down"); | |
2793 | ||
2794 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
2795 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
2796 | } |