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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
c6c5df7f | 3 | Copyright (C) 1985, 1986, 1987, 1993 Free Software Foundation, Inc. |
7ab12479 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1113d9db | 9 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
18160b98 | 21 | #include <config.h> |
7ab12479 JB |
22 | #include "lisp.h" |
23 | #include "buffer.h" | |
44fa5b1e | 24 | #include "frame.h" |
7ab12479 JB |
25 | #include "window.h" |
26 | #include "commands.h" | |
27 | #include "indent.h" | |
28 | #include "termchar.h" | |
29 | #include "disptab.h" | |
f8026fd8 | 30 | #include "keyboard.h" |
7ab12479 | 31 | |
806b4d9b | 32 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 JB |
33 | |
34 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
35 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
36 | ||
fd482be5 | 37 | void delete_all_subwindows (); |
7ab12479 JB |
38 | static struct window *decode_window(); |
39 | ||
40 | /* This is the window in which the terminal's cursor should | |
41 | be left when nothing is being done with it. This must | |
42 | always be a leaf window, and its buffer is selected by | |
43 | the top level editing loop at the end of each command. | |
44 | ||
45 | This value is always the same as | |
44fa5b1e | 46 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
47 | |
48 | Lisp_Object selected_window; | |
49 | ||
44fa5b1e | 50 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
51 | Note that you cannot test for minibufferness of an arbitrary window |
52 | by comparing against this; but you can test for minibufferness of | |
53 | the selected window. */ | |
54 | Lisp_Object minibuf_window; | |
55 | ||
56 | /* Non-nil means it is the window for C-M-v to scroll | |
57 | when the minibuffer is selected. */ | |
58 | Lisp_Object Vminibuf_scroll_window; | |
59 | ||
60 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
61 | Lisp_Object Vother_window_scroll_buffer; | |
62 | ||
7ab12479 JB |
63 | /* Non-nil means it's function to call to display temp buffers. */ |
64 | Lisp_Object Vtemp_buffer_show_function; | |
65 | ||
66 | /* If a window gets smaller than either of these, it is removed. */ | |
67 | int window_min_height; | |
68 | int window_min_width; | |
69 | ||
70 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
71 | int pop_up_windows; | |
72 | ||
44fa5b1e JB |
73 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
74 | int pop_up_frames; | |
7ab12479 JB |
75 | |
76 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 77 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
78 | |
79 | /* Function to call to handle Fdisplay_buffer. */ | |
80 | Lisp_Object Vdisplay_buffer_function; | |
81 | ||
82 | /* Fdisplay_buffer always splits the largest window | |
83 | if that window is more than this high. */ | |
84 | int split_height_threshold; | |
85 | ||
86 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
87 | int next_screen_context_lines; | |
88 | ||
89 | /* Incremented for each window created. */ | |
90 | static int sequence_number; | |
91 | ||
92 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
93 | \f | |
94 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
95 | "Returns t if OBJ is a window.") | |
96 | (obj) | |
97 | Lisp_Object obj; | |
98 | { | |
99 | return XTYPE (obj) == Lisp_Window ? Qt : Qnil; | |
100 | } | |
101 | ||
806b4d9b | 102 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
605be8af JB |
103 | "Returns t if OBJ is a window which is currently visible.") |
104 | (obj) | |
105 | Lisp_Object obj; | |
106 | { | |
107 | return ((XTYPE (obj) == Lisp_Window | |
108 | && ! NILP (XWINDOW (obj)->buffer)) | |
109 | ? Qt : Qnil); | |
110 | } | |
111 | ||
7ab12479 JB |
112 | Lisp_Object |
113 | make_window () | |
114 | { | |
115 | register Lisp_Object val; | |
116 | register struct window *p; | |
117 | ||
118 | /* Add sizeof (Lisp_Object) here because sizeof (struct Lisp_Vector) | |
119 | includes the first element. */ | |
120 | val = Fmake_vector ( | |
121 | make_number ((sizeof (struct window) - sizeof (struct Lisp_Vector) | |
122 | + sizeof (Lisp_Object)) | |
123 | / sizeof (Lisp_Object)), | |
124 | Qnil); | |
125 | XSETTYPE (val, Lisp_Window); | |
126 | p = XWINDOW (val); | |
127 | XFASTINT (p->sequence_number) = ++sequence_number; | |
128 | XFASTINT (p->left) = XFASTINT (p->top) | |
129 | = XFASTINT (p->height) = XFASTINT (p->width) | |
130 | = XFASTINT (p->hscroll) = 0; | |
131 | XFASTINT (p->last_point_x) = XFASTINT (p->last_point_y) = 0; | |
132 | p->start = Fmake_marker (); | |
133 | p->pointm = Fmake_marker (); | |
134 | XFASTINT (p->use_time) = 0; | |
44fa5b1e | 135 | p->frame = Qnil; |
7ab12479 JB |
136 | p->display_table = Qnil; |
137 | p->dedicated = Qnil; | |
138 | return val; | |
139 | } | |
140 | ||
141 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
142 | "Return the window that the cursor now appears in and commands apply to.") | |
143 | () | |
144 | { | |
145 | return selected_window; | |
146 | } | |
147 | ||
83762ba4 JB |
148 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
149 | "Return the window used now for minibuffers.\n\ | |
150 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
151 | used by that frame.") | |
152 | (frame) | |
153 | Lisp_Object frame; | |
7ab12479 | 154 | { |
44fa5b1e | 155 | #ifdef MULTI_FRAME |
83762ba4 JB |
156 | if (NILP (frame)) |
157 | XSET (frame, Lisp_Frame, selected_frame); | |
158 | else | |
159 | CHECK_LIVE_FRAME (frame, 0); | |
160 | #endif | |
161 | ||
162 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
163 | } |
164 | ||
605be8af | 165 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
166 | "Returns non-nil if WINDOW is a minibuffer window.") |
167 | (window) | |
168 | Lisp_Object window; | |
169 | { | |
170 | struct window *w = decode_window (window); | |
171 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
172 | } | |
173 | ||
174 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
175 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 176 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
177 | Returns nil if that position is scrolled vertically out of view.\n\ |
178 | POS defaults to point; WINDOW, to the selected window.") | |
179 | (pos, window) | |
180 | Lisp_Object pos, window; | |
181 | { | |
182 | register struct window *w; | |
183 | register int top; | |
184 | register int height; | |
185 | register int posint; | |
186 | register struct buffer *buf; | |
187 | struct position posval; | |
afdb2485 | 188 | int hscroll; |
7ab12479 | 189 | |
265a9e55 | 190 | if (NILP (pos)) |
7ab12479 JB |
191 | posint = point; |
192 | else | |
193 | { | |
194 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
195 | posint = XINT (pos); | |
196 | } | |
197 | ||
605be8af | 198 | w = decode_window (window); |
7ab12479 | 199 | top = marker_position (w->start); |
afdb2485 | 200 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
201 | |
202 | if (posint < top) | |
203 | return Qnil; | |
204 | ||
205 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
206 | ||
207 | buf = XBUFFER (w->buffer); | |
208 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
209 | { | |
44fa5b1e | 210 | /* If frame is up to date, |
7ab12479 JB |
211 | use the info recorded about how much text fit on it. */ |
212 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
213 | || (XFASTINT (w->window_end_vpos) < height)) | |
214 | return Qt; | |
215 | return Qnil; | |
216 | } | |
217 | else | |
218 | { | |
33eb4ede | 219 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
220 | return Qnil; |
221 | ||
222 | /* If that info is not correct, calculate afresh */ | |
afdb2485 KH |
223 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), |
224 | posint, height, 0, | |
535e0b8e | 225 | window_internal_width (w) - 1, |
afdb2485 | 226 | hscroll, 0); |
7ab12479 JB |
227 | |
228 | return posval.vpos < height ? Qt : Qnil; | |
229 | } | |
230 | } | |
231 | \f | |
232 | static struct window * | |
233 | decode_window (window) | |
234 | register Lisp_Object window; | |
235 | { | |
265a9e55 | 236 | if (NILP (window)) |
7ab12479 JB |
237 | return XWINDOW (selected_window); |
238 | ||
605be8af | 239 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
240 | return XWINDOW (window); |
241 | } | |
242 | ||
243 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
244 | "Return the buffer that WINDOW is displaying.") | |
245 | (window) | |
246 | Lisp_Object window; | |
247 | { | |
248 | return decode_window (window)->buffer; | |
249 | } | |
250 | ||
251 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
252 | "Return the number of lines in WINDOW (including its mode line).") | |
253 | (window) | |
254 | Lisp_Object window; | |
255 | { | |
256 | return decode_window (window)->height; | |
257 | } | |
258 | ||
259 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
260 | "Return the number of columns in WINDOW.") | |
261 | (window) | |
262 | Lisp_Object window; | |
263 | { | |
264 | register struct window *w = decode_window (window); | |
7f4161e0 | 265 | register int width = XFASTINT (w->width); |
7ab12479 | 266 | |
535e0b8e | 267 | return make_number (window_internal_width (w)); |
7ab12479 JB |
268 | } |
269 | ||
270 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
271 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
272 | (window) | |
273 | Lisp_Object window; | |
274 | { | |
275 | return decode_window (window)->hscroll; | |
276 | } | |
277 | ||
278 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
279 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
280 | NCOL should be zero or positive.") | |
281 | (window, ncol) | |
282 | register Lisp_Object window, ncol; | |
283 | { | |
284 | register struct window *w; | |
285 | ||
286 | CHECK_NUMBER (ncol, 1); | |
287 | if (XINT (ncol) < 0) XFASTINT (ncol) = 0; | |
288 | if (XFASTINT (ncol) >= (1 << (SHORTBITS - 1))) | |
289 | args_out_of_range (ncol, Qnil); | |
290 | w = decode_window (window); | |
7f4161e0 | 291 | if (XINT (w->hscroll) != XINT (ncol)) |
7ab12479 JB |
292 | clip_changed = 1; /* Prevent redisplay shortcuts */ |
293 | w->hscroll = ncol; | |
294 | return ncol; | |
295 | } | |
296 | ||
297 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, | |
298 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 299 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
300 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
301 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
302 | and its mode-line.") | |
303 | (window) | |
304 | Lisp_Object window; | |
305 | { | |
306 | register struct window *w = decode_window (window); | |
307 | ||
308 | return Fcons (w->left, Fcons (w->top, | |
309 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
310 | Fcons (make_number (XFASTINT (w->top) | |
311 | + XFASTINT (w->height)), | |
312 | Qnil)))); | |
313 | } | |
314 | ||
d5783c40 JB |
315 | /* Test if the character at column *x, row *y is within window *w. |
316 | If it is not, return 0; | |
317 | if it is in the window's text area, | |
318 | set *x and *y to its location relative to the upper left corner | |
319 | of the window, and | |
320 | return 1; | |
321 | if it is on the window's modeline, return 2; | |
322 | if it is on the border between the window and its right sibling, | |
323 | return 3. */ | |
324 | static int | |
325 | coordinates_in_window (w, x, y) | |
326 | register struct window *w; | |
327 | register int *x, *y; | |
328 | { | |
329 | register int left = XINT (w->left); | |
330 | register int width = XINT (w->width); | |
331 | register int window_height = XINT (w->height); | |
332 | register int top = XFASTINT (w->top); | |
333 | ||
334 | if ( *x < left || *x >= left + width | |
335 | || *y < top || *y >= top + window_height) | |
336 | return 0; | |
337 | ||
338 | /* Is the character is the mode line? */ | |
339 | if (*y == top + window_height - 1 | |
05c2896a | 340 | && ! MINI_WINDOW_P (w)) |
d5783c40 JB |
341 | return 2; |
342 | ||
343 | /* Is the character in the right border? */ | |
344 | if (*x == left + width - 1 | |
44fa5b1e | 345 | && left + width != FRAME_WIDTH (XFRAME (w->frame))) |
d5783c40 JB |
346 | return 3; |
347 | ||
348 | *x -= left; | |
349 | *y -= top; | |
350 | return 1; | |
351 | } | |
352 | ||
353 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
354 | Scoordinates_in_window_p, 2, 2, 0, | |
355 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 356 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 357 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 358 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 359 | frame.\n\ |
d5783c40 JB |
360 | If COORDINATES are in the text portion of WINDOW,\n\ |
361 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 362 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 363 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 364 | `vertical-line' is returned.") |
d5783c40 JB |
365 | (coordinates, window) |
366 | register Lisp_Object coordinates, window; | |
367 | { | |
368 | int x, y; | |
369 | ||
605be8af | 370 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
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. */ | |
e5d77022 | 387 | return Qvertical_line; |
d5783c40 JB |
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 |
44fa5b1e JB |
400 | window_from_coordinates (frame, x, y, part) |
401 | FRAME_PTR frame; | |
7ab12479 | 402 | int x, y; |
d5783c40 | 403 | int *part; |
7ab12479 JB |
404 | { |
405 | register Lisp_Object tem, first; | |
406 | ||
44fa5b1e | 407 | tem = first = FRAME_SELECTED_WINDOW (frame); |
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 | ||
ab17c3f2 | 426 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 427 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
428 | If omitted, FRAME defaults to the currently selected frame.\n\ |
429 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 430 | column 0.") |
b0c33a94 RS |
431 | (x, y, frame) |
432 | Lisp_Object x, y, frame; | |
7ab12479 JB |
433 | { |
434 | int part; | |
435 | ||
4b206065 | 436 | #ifdef MULTI_FRAME |
44fa5b1e JB |
437 | if (NILP (frame)) |
438 | XSET (frame, Lisp_Frame, selected_frame); | |
d5783c40 | 439 | else |
44fa5b1e | 440 | CHECK_LIVE_FRAME (frame, 2); |
4b206065 | 441 | #endif |
b0c33a94 RS |
442 | CHECK_NUMBER (x, 0); |
443 | CHECK_NUMBER (y, 1); | |
7ab12479 | 444 | |
44fa5b1e | 445 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 446 | XINT (x), XINT (y), |
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); | |
5a41ab94 RS |
486 | Lisp_Object buf; |
487 | ||
488 | buf = w->buffer; | |
489 | CHECK_BUFFER (buf, 0); | |
490 | ||
7ab12479 | 491 | XSET (value, Lisp_Int, |
5a41ab94 | 492 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
493 | |
494 | return value; | |
495 | } | |
496 | ||
497 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
498 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
499 | (window, pos) | |
500 | Lisp_Object window, pos; | |
501 | { | |
502 | register struct window *w = decode_window (window); | |
503 | ||
504 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
505 | if (w == XWINDOW (selected_window)) | |
506 | Fgoto_char (pos); | |
507 | else | |
508 | set_marker_restricted (w->pointm, pos, w->buffer); | |
509 | ||
510 | return pos; | |
511 | } | |
512 | ||
513 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
514 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
515 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
516 | from overriding motion of point in order to display at this exact start.") | |
517 | (window, pos, noforce) | |
518 | Lisp_Object window, pos, noforce; | |
519 | { | |
520 | register struct window *w = decode_window (window); | |
521 | ||
522 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
523 | set_marker_restricted (w->start, pos, w->buffer); | |
524 | /* this is not right, but much easier than doing what is right. */ | |
525 | w->start_at_line_beg = Qnil; | |
265a9e55 | 526 | if (NILP (noforce)) |
7ab12479 JB |
527 | w->force_start = Qt; |
528 | w->update_mode_line = Qt; | |
529 | XFASTINT (w->last_modified) = 0; | |
62c07cc7 JB |
530 | if (!EQ (window, selected_window)) |
531 | windows_or_buffers_changed++; | |
7ab12479 JB |
532 | return pos; |
533 | } | |
534 | ||
535 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
536 | 1, 1, 0, | |
537 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 538 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
539 | (window) |
540 | Lisp_Object window; | |
541 | { | |
542 | return decode_window (window)->dedicated; | |
543 | } | |
544 | ||
d207b766 RS |
545 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
546 | Sset_window_dedicated_p, 2, 2, 0, | |
547 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
548 | If it is dedicated, Emacs will not automatically change\n\ | |
549 | which buffer appears in it.\n\ | |
550 | The second argument is the new value for the dedication flag;\n\ | |
551 | non-nil means yes.") | |
7ab12479 JB |
552 | (window, arg) |
553 | Lisp_Object window, arg; | |
554 | { | |
555 | register struct window *w = decode_window (window); | |
556 | ||
265a9e55 | 557 | if (NILP (arg)) |
7ab12479 JB |
558 | w->dedicated = Qnil; |
559 | else | |
d207b766 | 560 | w->dedicated = Qt; |
7ab12479 JB |
561 | |
562 | return w->dedicated; | |
563 | } | |
564 | ||
565 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
566 | 0, 1, 0, | |
567 | "Return the display-table that WINDOW is using.") | |
568 | (window) | |
569 | Lisp_Object window; | |
570 | { | |
571 | return decode_window (window)->display_table; | |
572 | } | |
573 | ||
574 | /* Get the display table for use currently on window W. | |
575 | This is either W's display table or W's buffer's display table. | |
576 | Ignore the specified tables if they are not valid; | |
577 | if no valid table is specified, return 0. */ | |
578 | ||
579 | struct Lisp_Vector * | |
580 | window_display_table (w) | |
581 | struct window *w; | |
582 | { | |
583 | Lisp_Object tem; | |
584 | tem = w->display_table; | |
585 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
586 | return XVECTOR (tem); | |
587 | tem = XBUFFER (w->buffer)->display_table; | |
588 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
589 | return XVECTOR (tem); | |
590 | tem = Vstandard_display_table; | |
591 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
592 | return XVECTOR (tem); | |
593 | return 0; | |
594 | } | |
595 | ||
3a2712f9 | 596 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
597 | "Set WINDOW's display-table to TABLE.") |
598 | (window, table) | |
599 | register Lisp_Object window, table; | |
600 | { | |
601 | register struct window *w; | |
602 | register Lisp_Object z; /* Return value. */ | |
603 | ||
604 | w = decode_window (window); | |
605 | w->display_table = table; | |
606 | return table; | |
607 | } | |
608 | \f | |
609 | /* Record info on buffer window w is displaying | |
610 | when it is about to cease to display that buffer. */ | |
611 | static | |
612 | unshow_buffer (w) | |
613 | register struct window *w; | |
614 | { | |
615 | Lisp_Object buf = w->buffer; | |
616 | ||
617 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) | |
618 | abort (); | |
619 | ||
573f41ab | 620 | #if 0 |
7ab12479 JB |
621 | if (w == XWINDOW (selected_window) |
622 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
623 | /* Do this except when the selected window's buffer | |
624 | is being removed from some other window. */ | |
573f41ab RS |
625 | #endif |
626 | /* last_window_start records the start position that this buffer | |
627 | had in the last window to be disconnected from it. | |
628 | Now that this statement is unconditional, | |
629 | it is possible for the buffer to be displayed in the | |
630 | selected window, while last_window_start reflects another | |
631 | window which was recently showing the same buffer. | |
632 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
633 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
634 | ||
635 | /* Point in the selected window's buffer | |
636 | is actually stored in that buffer, and the window's pointm isn't used. | |
637 | So don't clobber point in that buffer. */ | |
638 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
639 | BUF_PT (XBUFFER (buf)) | |
640 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
641 | marker_position (w->pointm), | |
642 | BUF_ZV (XBUFFER (buf))); | |
643 | } | |
644 | ||
645 | /* Put replacement into the window structure in place of old. */ | |
646 | static | |
647 | replace_window (old, replacement) | |
648 | Lisp_Object old, replacement; | |
649 | { | |
650 | register Lisp_Object tem; | |
651 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
652 | ||
44fa5b1e JB |
653 | /* If OLD is its frame's root_window, then replacement is the new |
654 | root_window for that frame. */ | |
7ab12479 | 655 | |
7f4161e0 | 656 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 657 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
658 | |
659 | p->left = o->left; | |
660 | p->top = o->top; | |
661 | p->width = o->width; | |
662 | p->height = o->height; | |
663 | ||
664 | p->next = tem = o->next; | |
265a9e55 | 665 | if (!NILP (tem)) |
7ab12479 JB |
666 | XWINDOW (tem)->prev = replacement; |
667 | ||
668 | p->prev = tem = o->prev; | |
265a9e55 | 669 | if (!NILP (tem)) |
7ab12479 JB |
670 | XWINDOW (tem)->next = replacement; |
671 | ||
672 | p->parent = tem = o->parent; | |
265a9e55 | 673 | if (!NILP (tem)) |
7ab12479 JB |
674 | { |
675 | if (EQ (XWINDOW (tem)->vchild, old)) | |
676 | XWINDOW (tem)->vchild = replacement; | |
677 | if (EQ (XWINDOW (tem)->hchild, old)) | |
678 | XWINDOW (tem)->hchild = replacement; | |
679 | } | |
680 | ||
681 | /*** Here, if replacement is a vertical combination | |
682 | and so is its new parent, we should make replacement's | |
683 | children be children of that parent instead. ***/ | |
684 | } | |
685 | ||
686 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
687 | "Remove WINDOW from the display. Default is selected window.") | |
688 | (window) | |
689 | register Lisp_Object window; | |
690 | { | |
691 | register Lisp_Object tem, parent, sib; | |
692 | register struct window *p; | |
693 | register struct window *par; | |
694 | ||
605be8af JB |
695 | /* Because this function is called by other C code on non-leaf |
696 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
697 | so we can't decode_window here. */ | |
265a9e55 | 698 | if (NILP (window)) |
7ab12479 JB |
699 | window = selected_window; |
700 | else | |
701 | CHECK_WINDOW (window, 0); | |
7ab12479 | 702 | p = XWINDOW (window); |
605be8af JB |
703 | |
704 | /* It's okay to delete an already-deleted window. */ | |
705 | if (NILP (p->buffer) | |
706 | && NILP (p->hchild) | |
707 | && NILP (p->vchild)) | |
708 | return Qnil; | |
709 | ||
7ab12479 | 710 | parent = p->parent; |
265a9e55 | 711 | if (NILP (parent)) |
7ab12479 JB |
712 | error ("Attempt to delete minibuffer or sole ordinary window"); |
713 | par = XWINDOW (parent); | |
714 | ||
715 | windows_or_buffers_changed++; | |
716 | ||
605be8af JB |
717 | /* Are we trying to delete any frame's selected window? */ |
718 | { | |
0def0403 | 719 | Lisp_Object frame, pwindow; |
605be8af | 720 | |
0def0403 RS |
721 | /* See if the frame's selected window is either WINDOW |
722 | or any subwindow of it, by finding all that window's parents | |
723 | and comparing each one with WINDOW. */ | |
724 | frame = WINDOW_FRAME (XWINDOW (window)); | |
725 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
726 | ||
727 | while (!NILP (pwindow)) | |
728 | { | |
729 | if (EQ (window, pwindow)) | |
730 | break; | |
731 | pwindow = XWINDOW (pwindow)->parent; | |
732 | } | |
733 | ||
734 | if (EQ (window, pwindow)) | |
605be8af JB |
735 | { |
736 | Lisp_Object alternative = Fnext_window (window, Qlambda, Qnil); | |
737 | ||
738 | /* If we're about to delete the selected window on the | |
739 | selected frame, then we should use Fselect_window to select | |
740 | the new window. On the other hand, if we're about to | |
741 | delete the selected window on any other frame, we shouldn't do | |
742 | anything but set the frame's selected_window slot. */ | |
743 | if (EQ (window, selected_window)) | |
744 | Fselect_window (alternative); | |
745 | else | |
0def0403 | 746 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
747 | } |
748 | } | |
7ab12479 JB |
749 | |
750 | tem = p->buffer; | |
751 | /* tem is null for dummy parent windows | |
752 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 753 | if (!NILP (tem)) |
7ab12479 JB |
754 | { |
755 | unshow_buffer (p); | |
756 | unchain_marker (p->pointm); | |
757 | unchain_marker (p->start); | |
7ab12479 JB |
758 | } |
759 | ||
760 | tem = p->next; | |
265a9e55 | 761 | if (!NILP (tem)) |
7ab12479 JB |
762 | XWINDOW (tem)->prev = p->prev; |
763 | ||
764 | tem = p->prev; | |
265a9e55 | 765 | if (!NILP (tem)) |
7ab12479 JB |
766 | XWINDOW (tem)->next = p->next; |
767 | ||
768 | if (EQ (window, par->hchild)) | |
769 | par->hchild = p->next; | |
770 | if (EQ (window, par->vchild)) | |
771 | par->vchild = p->next; | |
772 | ||
773 | /* Find one of our siblings to give our space to. */ | |
774 | sib = p->prev; | |
265a9e55 | 775 | if (NILP (sib)) |
7ab12479 JB |
776 | { |
777 | /* If p gives its space to its next sibling, that sibling needs | |
778 | to have its top/left side pulled back to where p's is. | |
779 | set_window_{height,width} will re-position the sibling's | |
780 | children. */ | |
781 | sib = p->next; | |
7f4161e0 JB |
782 | XWINDOW (sib)->top = p->top; |
783 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
784 | } |
785 | ||
786 | /* Stretch that sibling. */ | |
265a9e55 | 787 | if (!NILP (par->vchild)) |
7ab12479 JB |
788 | set_window_height (sib, |
789 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
790 | 1); | |
265a9e55 | 791 | if (!NILP (par->hchild)) |
7ab12479 JB |
792 | set_window_width (sib, |
793 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
794 | 1); | |
795 | ||
796 | /* If parent now has only one child, | |
797 | put the child into the parent's place. */ | |
7ab12479 | 798 | tem = par->hchild; |
265a9e55 | 799 | if (NILP (tem)) |
7ab12479 | 800 | tem = par->vchild; |
265a9e55 | 801 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 802 | replace_window (parent, tem); |
605be8af JB |
803 | |
804 | /* Since we may be deleting combination windows, we must make sure that | |
805 | not only p but all its children have been marked as deleted. */ | |
806 | if (! NILP (p->hchild)) | |
807 | delete_all_subwindows (XWINDOW (p->hchild)); | |
808 | else if (! NILP (p->vchild)) | |
809 | delete_all_subwindows (XWINDOW (p->vchild)); | |
810 | ||
811 | /* Mark this window as deleted. */ | |
812 | p->buffer = p->hchild = p->vchild = Qnil; | |
813 | ||
7ab12479 JB |
814 | return Qnil; |
815 | } | |
816 | \f | |
7ab12479 | 817 | |
44fa5b1e | 818 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 819 | |
26f6279d JB |
820 | /* This comment supplies the doc string for `next-window', |
821 | for make-docfile to see. We cannot put this in the real DEFUN | |
822 | due to limits in the Unix cpp. | |
823 | ||
824 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 825 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
826 | If omitted, WINDOW defaults to the selected window.\n\ |
827 | \n\ | |
828 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
829 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
830 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
831 | minibuffer even if it is active.\n\ | |
832 | \n\ | |
44fa5b1e JB |
833 | Several frames may share a single minibuffer; if the minibuffer\n\ |
834 | counts, all windows on all frames that share that minibuffer count\n\ | |
d5783c40 | 835 | too. This means that next-window may be used to iterate through the\n\ |
44fa5b1e JB |
836 | set of windows even when the minibuffer is on another frame. If the\n\ |
837 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 838 | \n\ |
44fa5b1e JB |
839 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
840 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
dbc4e1c1 JB |
841 | above. If neither nil nor t, restrict to WINDOW's frame.\n\ |
842 | \n\ | |
843 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
844 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
845 | windows, eventually ending up back at the window you started with.\n\ | |
846 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
847 | (window, minibuf, all_frames) */ |
848 | ||
849 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
850 | 0) | |
44fa5b1e JB |
851 | (window, minibuf, all_frames) |
852 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
853 | { |
854 | register Lisp_Object tem; | |
d5783c40 | 855 | Lisp_Object start_window; |
7ab12479 | 856 | |
265a9e55 | 857 | if (NILP (window)) |
7ab12479 JB |
858 | window = selected_window; |
859 | else | |
605be8af | 860 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 861 | |
d5783c40 JB |
862 | start_window = window; |
863 | ||
864 | /* minibuf == nil may or may not include minibuffers. | |
865 | Decide if it does. */ | |
265a9e55 | 866 | if (NILP (minibuf)) |
d5783c40 JB |
867 | minibuf = (minibuf_level ? Qt : Qlambda); |
868 | ||
44fa5b1e JB |
869 | /* all_frames == nil doesn't specify which frames to include. |
870 | Decide which frames it includes. */ | |
871 | if (NILP (all_frames)) | |
872 | all_frames = (EQ (minibuf, Qt) | |
873 | ? (FRAME_MINIBUF_WINDOW | |
874 | (XFRAME | |
875 | (WINDOW_FRAME | |
d5783c40 JB |
876 | (XWINDOW (window))))) |
877 | : Qnil); | |
44fa5b1e JB |
878 | else if (! EQ (all_frames, Qt)) |
879 | all_frames = Qnil; | |
644b477c RS |
880 | /* Now all_frames is t meaning search all frames, |
881 | nil meaning search just current frame, | |
882 | or a window, meaning search the frame that window belongs to. */ | |
7ab12479 JB |
883 | |
884 | /* Do this loop at least once, to get the next window, and perhaps | |
885 | again, if we hit the minibuffer and that is not acceptable. */ | |
886 | do | |
887 | { | |
888 | /* Find a window that actually has a next one. This loop | |
889 | climbs up the tree. */ | |
265a9e55 JB |
890 | while (tem = XWINDOW (window)->next, NILP (tem)) |
891 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 892 | window = tem; |
d5783c40 | 893 | else |
7ab12479 | 894 | { |
44fa5b1e JB |
895 | /* We've reached the end of this frame. |
896 | Which other frames are acceptable? */ | |
897 | tem = WINDOW_FRAME (XWINDOW (window)); | |
898 | #ifdef MULTI_FRAME | |
899 | if (! NILP (all_frames)) | |
900 | tem = next_frame (tem, all_frames); | |
7ab12479 | 901 | #endif |
44fa5b1e | 902 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 903 | |
7ab12479 JB |
904 | break; |
905 | } | |
906 | ||
907 | window = tem; | |
d5783c40 | 908 | |
7ab12479 JB |
909 | /* If we're in a combination window, find its first child and |
910 | recurse on that. Otherwise, we've found the window we want. */ | |
911 | while (1) | |
912 | { | |
265a9e55 | 913 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 914 | window = XWINDOW (window)->hchild; |
265a9e55 | 915 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
916 | window = XWINDOW (window)->vchild; |
917 | else break; | |
918 | } | |
919 | } | |
d5783c40 JB |
920 | /* Which windows are acceptible? |
921 | Exit the loop and accept this window if | |
7ab12479 | 922 | this isn't a minibuffer window, or |
d5783c40 JB |
923 | we're accepting minibuffer windows, or |
924 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 925 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 926 | && ! EQ (minibuf, Qt) |
7f4161e0 | 927 | && ! EQ (window, start_window)); |
7ab12479 JB |
928 | |
929 | return window; | |
930 | } | |
931 | ||
26f6279d JB |
932 | /* This comment supplies the doc string for `previous-window', |
933 | for make-docfile to see. We cannot put this in the real DEFUN | |
934 | due to limits in the Unix cpp. | |
935 | ||
936 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
d5783c40 JB |
937 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
938 | If omitted, WINDOW defaults to the selected window.\n\ | |
939 | \n\ | |
940 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
941 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
942 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
943 | minibuffer even if it is active.\n\ | |
944 | \n\ | |
44fa5b1e JB |
945 | Several frames may share a single minibuffer; if the minibuffer\n\ |
946 | counts, all windows on all frames that share that minibuffer count\n\ | |
d5783c40 | 947 | too. This means that previous-window may be used to iterate through\n\ |
44fa5b1e JB |
948 | the set of windows even when the minibuffer is on another frame. If\n\ |
949 | the minibuffer does not count, only windows from WINDOW's frame\n\ | |
d5783c40 JB |
950 | count.\n\ |
951 | \n\ | |
44fa5b1e JB |
952 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
953 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
dbc4e1c1 JB |
954 | above. If neither nil nor t, restrict to WINDOW's frame.\n\ |
955 | \n\ | |
956 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
957 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
958 | windows, eventually ending up back at the window you started with.\n\ | |
959 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
960 | (window, minibuf, all_frames) */ |
961 | ||
962 | ||
963 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
964 | 0) | |
44fa5b1e JB |
965 | (window, minibuf, all_frames) |
966 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
967 | { |
968 | register Lisp_Object tem; | |
d5783c40 | 969 | Lisp_Object start_window; |
7ab12479 | 970 | |
265a9e55 | 971 | if (NILP (window)) |
7ab12479 JB |
972 | window = selected_window; |
973 | else | |
605be8af | 974 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 975 | |
d5783c40 JB |
976 | start_window = window; |
977 | ||
978 | /* minibuf == nil may or may not include minibuffers. | |
979 | Decide if it does. */ | |
265a9e55 | 980 | if (NILP (minibuf)) |
d5783c40 JB |
981 | minibuf = (minibuf_level ? Qt : Qlambda); |
982 | ||
44fa5b1e JB |
983 | /* all_frames == nil doesn't specify which frames to include. |
984 | Decide which frames it includes. */ | |
985 | if (NILP (all_frames)) | |
986 | all_frames = (EQ (minibuf, Qt) | |
987 | ? (FRAME_MINIBUF_WINDOW | |
988 | (XFRAME | |
989 | (WINDOW_FRAME | |
d5783c40 JB |
990 | (XWINDOW (window))))) |
991 | : Qnil); | |
44fa5b1e JB |
992 | else if (! EQ (all_frames, Qt)) |
993 | all_frames = Qnil; | |
644b477c RS |
994 | /* Now all_frames is t meaning search all frames, |
995 | nil meaning search just current frame, | |
996 | or a window, meaning search the frame that window belongs to. */ | |
7ab12479 JB |
997 | |
998 | /* Do this loop at least once, to get the previous window, and perhaps | |
999 | again, if we hit the minibuffer and that is not acceptable. */ | |
1000 | do | |
1001 | { | |
1002 | /* Find a window that actually has a previous one. This loop | |
1003 | climbs up the tree. */ | |
265a9e55 JB |
1004 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1005 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1006 | window = tem; |
d5783c40 | 1007 | else |
7ab12479 | 1008 | { |
44fa5b1e JB |
1009 | /* We have found the top window on the frame. |
1010 | Which frames are acceptable? */ | |
1011 | tem = WINDOW_FRAME (XWINDOW (window)); | |
1012 | #ifdef MULTI_FRAME | |
1013 | if (! NILP (all_frames)) | |
dbc4e1c1 JB |
1014 | /* It's actually important that we use prev_frame here, |
1015 | rather than next_frame. All the windows acceptable | |
1016 | according to the given parameters should form a ring; | |
1017 | Fnext_window and Fprevious_window should go back and | |
1018 | forth around the ring. If we use next_frame here, | |
1019 | then Fnext_window and Fprevious_window take different | |
1020 | paths through the set of acceptable windows. | |
1021 | window_loop assumes that these `ring' requirement are | |
1022 | met. */ | |
1023 | tem = prev_frame (tem, all_frames); | |
7ab12479 | 1024 | #endif |
644b477c RS |
1025 | /* If this frame has a minibuffer, find that window first, |
1026 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1027 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1028 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1029 | else | |
644b477c | 1030 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1031 | |
7ab12479 JB |
1032 | break; |
1033 | } | |
1034 | ||
1035 | window = tem; | |
1036 | /* If we're in a combination window, find its last child and | |
1037 | recurse on that. Otherwise, we've found the window we want. */ | |
1038 | while (1) | |
1039 | { | |
265a9e55 | 1040 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1041 | window = XWINDOW (window)->hchild; |
265a9e55 | 1042 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1043 | window = XWINDOW (window)->vchild; |
1044 | else break; | |
265a9e55 | 1045 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1046 | window = tem; |
1047 | } | |
1048 | } | |
d5783c40 JB |
1049 | /* Which windows are acceptable? |
1050 | Exit the loop and accept this window if | |
7ab12479 | 1051 | this isn't a minibuffer window, or |
d5783c40 JB |
1052 | we're accepting minibuffer windows, or |
1053 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 1054 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1055 | && !EQ (minibuf, Qt) |
7f4161e0 | 1056 | && !EQ (window, start_window)); |
7ab12479 JB |
1057 | |
1058 | return window; | |
1059 | } | |
1060 | ||
62c07cc7 | 1061 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1062 | "Select the ARG'th different window on this frame.\n\ |
1063 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1064 | This command selects the window ARG steps away in that order.\n\ |
1065 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e JB |
1066 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
1067 | (n, all_frames) | |
1068 | register Lisp_Object n, all_frames; | |
7ab12479 JB |
1069 | { |
1070 | register int i; | |
1071 | register Lisp_Object w; | |
1072 | ||
1073 | CHECK_NUMBER (n, 0); | |
1074 | w = selected_window; | |
1075 | i = XINT (n); | |
1076 | ||
1077 | while (i > 0) | |
1078 | { | |
44fa5b1e | 1079 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1080 | i--; |
1081 | } | |
1082 | while (i < 0) | |
1083 | { | |
44fa5b1e | 1084 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1085 | i++; |
1086 | } | |
1087 | Fselect_window (w); | |
1088 | return Qnil; | |
1089 | } | |
1090 | \f | |
1091 | /* Look at all windows, performing an operation specified by TYPE | |
1092 | with argument OBJ. | |
75d8f668 | 1093 | If FRAMES is Qt, look at all frames; |
75d8f668 JB |
1094 | Qnil, look at just the selected frame; |
1095 | a frame, just look at windows on that frame. | |
7ab12479 JB |
1096 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1097 | */ | |
1098 | ||
1099 | enum window_loop | |
1100 | { | |
1101 | WINDOW_LOOP_UNUSED, | |
1102 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1103 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1104 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1105 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1106 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1107 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1108 | }; |
1109 | ||
1110 | static Lisp_Object | |
44fa5b1e | 1111 | window_loop (type, obj, mini, frames) |
7ab12479 | 1112 | enum window_loop type; |
44fa5b1e | 1113 | register Lisp_Object obj, frames; |
7ab12479 JB |
1114 | int mini; |
1115 | { | |
1116 | register Lisp_Object w; | |
1117 | register Lisp_Object best_window; | |
1118 | register Lisp_Object next_window; | |
4b206065 | 1119 | register Lisp_Object last_window; |
44fa5b1e JB |
1120 | FRAME_PTR frame; |
1121 | ||
4b206065 | 1122 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1123 | /* If we're only looping through windows on a particular frame, |
1124 | frame points to that frame. If we're looping through windows | |
1125 | on all frames, frame is 0. */ | |
1126 | if (FRAMEP (frames)) | |
1127 | frame = XFRAME (frames); | |
1128 | else if (NILP (frames)) | |
1129 | frame = selected_frame; | |
7ab12479 | 1130 | else |
44fa5b1e | 1131 | frame = 0; |
4b206065 JB |
1132 | #else |
1133 | frame = 0; | |
1134 | #endif | |
7ab12479 JB |
1135 | |
1136 | /* Pick a window to start with. */ | |
1137 | if (XTYPE (obj) == Lisp_Window) | |
4b206065 | 1138 | w = obj; |
44fa5b1e | 1139 | else if (frame) |
4b206065 | 1140 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1141 | else |
4b206065 JB |
1142 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1143 | ||
1144 | /* Figure out the last window we're going to mess with. Since | |
1145 | Fnext_window, given the same options, is guaranteed to go in a | |
1146 | ring, we can just use Fprevious_window to find the last one. | |
1147 | ||
1148 | We can't just wait until we hit the first window again, because | |
1149 | it might be deleted. */ | |
1150 | ||
1151 | #ifdef MULTI_FRAME | |
1152 | if (frame) | |
1153 | last_window = Fprevious_window (w, (mini ? Qt : Qnil), Qlambda); | |
1154 | else | |
1155 | #endif /* MULTI_FRAME */ | |
1156 | /* We know frame is 0, so we're looping through all frames. | |
1157 | Or we know this isn't a MULTI_FRAME Emacs, so who cares? */ | |
1158 | last_window = Fprevious_window (w, mini ? Qt : Qnil, Qt); | |
7ab12479 | 1159 | |
7ab12479 | 1160 | best_window = Qnil; |
4b206065 | 1161 | for (;;) |
7ab12479 | 1162 | { |
75d8f668 JB |
1163 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1164 | ||
7ab12479 JB |
1165 | /* Pick the next window now, since some operations will delete |
1166 | the current window. */ | |
44fa5b1e JB |
1167 | #ifdef MULTI_FRAME |
1168 | if (frame) | |
d5783c40 | 1169 | next_window = Fnext_window (w, (mini ? Qt : Qnil), Qlambda); |
7ab12479 | 1170 | else |
4b206065 | 1171 | #endif /* MULTI_FRAME */ |
44fa5b1e JB |
1172 | /* We know frame is 0, so we're looping through all frames. |
1173 | Or we know this isn't a MULTI_FRAME Emacs, so who cares? */ | |
7ab12479 JB |
1174 | next_window = Fnext_window (w, mini ? Qt : Qnil, Qt); |
1175 | ||
75d8f668 | 1176 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1177 | || (mini && minibuf_level > 0)) |
1178 | switch (type) | |
1179 | { | |
1180 | case GET_BUFFER_WINDOW: | |
1bc981d2 JB |
1181 | /* Ignore invisible and iconified frames. */ |
1182 | if (! FRAME_VISIBLE_P (w_frame) | |
1183 | || FRAME_ICONIFIED_P (w_frame)) | |
7ab12479 | 1184 | break; |
7ab12479 JB |
1185 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) |
1186 | return w; | |
1187 | break; | |
1188 | ||
1189 | case GET_LRU_WINDOW: | |
1190 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1191 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
a2db42d6 | 1192 | != FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (w))))) |
7ab12479 JB |
1193 | break; |
1194 | #if 0 | |
44fa5b1e JB |
1195 | /* Ignore invisible and iconified frames. */ |
1196 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1197 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1198 | break; |
1199 | #endif | |
1200 | /* Ignore dedicated windows and minibuffers. */ | |
1201 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1202 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1203 | break; |
265a9e55 | 1204 | if (NILP (best_window) |
7ab12479 JB |
1205 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1206 | > XFASTINT (XWINDOW (w)->use_time))) | |
1207 | best_window = w; | |
1208 | break; | |
1209 | ||
1210 | case DELETE_OTHER_WINDOWS: | |
1211 | if (XWINDOW (w) != XWINDOW (obj)) | |
1212 | Fdelete_window (w); | |
1213 | break; | |
1214 | ||
1215 | case DELETE_BUFFER_WINDOWS: | |
1216 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1217 | { | |
1218 | /* If we're deleting the buffer displayed in the only window | |
44fa5b1e | 1219 | on the frame, find a new buffer to display there. */ |
265a9e55 | 1220 | if (NILP (XWINDOW (w)->parent)) |
7ab12479 | 1221 | { |
faa64cf7 | 1222 | Lisp_Object new_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1223 | if (NILP (new_buffer)) |
7ab12479 JB |
1224 | new_buffer |
1225 | = Fget_buffer_create (build_string ("*scratch*")); | |
1226 | Fset_window_buffer (w, new_buffer); | |
d895abb0 RS |
1227 | if (EQ (w, selected_window)) |
1228 | Fset_buffer (XWINDOW (w)->buffer); | |
7ab12479 JB |
1229 | } |
1230 | else | |
1231 | Fdelete_window (w); | |
1232 | } | |
1233 | break; | |
1234 | ||
1235 | case GET_LARGEST_WINDOW: | |
1236 | #if 0 | |
44fa5b1e JB |
1237 | /* Ignore invisible and iconified frames. */ |
1238 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1239 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1240 | break; |
1241 | #endif | |
1242 | /* Ignore dedicated windows and minibuffers. */ | |
1243 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1244 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1245 | break; |
1246 | { | |
1247 | struct window *best_window_ptr = XWINDOW (best_window); | |
1248 | struct window *w_ptr = XWINDOW (w); | |
265a9e55 | 1249 | if (NILP (best_window) || |
7ab12479 JB |
1250 | (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width)) |
1251 | > (XFASTINT (best_window_ptr->height) | |
1252 | * XFASTINT (best_window_ptr->width))) | |
1253 | best_window = w; | |
1254 | } | |
1255 | break; | |
1256 | ||
1257 | case UNSHOW_BUFFER: | |
1258 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1259 | { | |
1260 | /* Find another buffer to show in this window. */ | |
faa64cf7 | 1261 | Lisp_Object another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1262 | if (NILP (another_buffer)) |
7ab12479 JB |
1263 | another_buffer |
1264 | = Fget_buffer_create (build_string ("*scratch*")); | |
1265 | Fset_window_buffer (w, another_buffer); | |
1266 | if (EQ (w, selected_window)) | |
1267 | Fset_buffer (XWINDOW (w)->buffer); | |
1268 | } | |
1269 | break; | |
1270 | } | |
4b206065 JB |
1271 | |
1272 | if (EQ (w, last_window)) | |
1273 | break; | |
1274 | ||
7ab12479 JB |
1275 | w = next_window; |
1276 | } | |
7ab12479 JB |
1277 | |
1278 | return best_window; | |
1279 | } | |
605be8af | 1280 | |
7ab12479 JB |
1281 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1282 | "Return the window least recently selected or used for display.\n\ | |
44fa5b1e JB |
1283 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1284 | frame, search only that frame.\n") | |
1285 | (frames) | |
1286 | Lisp_Object frames; | |
7ab12479 JB |
1287 | { |
1288 | register Lisp_Object w; | |
1289 | /* First try for a window that is full-width */ | |
44fa5b1e | 1290 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frames); |
265a9e55 | 1291 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1292 | return w; |
1293 | /* If none of them, try the rest */ | |
44fa5b1e | 1294 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frames); |
7ab12479 JB |
1295 | } |
1296 | ||
1297 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1298 | "Return the largest window in area.\n\ | |
44fa5b1e JB |
1299 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1300 | frame, search only that frame.\n") | |
1301 | (frame) | |
1302 | Lisp_Object frame; | |
7ab12479 JB |
1303 | { |
1304 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1305 | frame); |
7ab12479 JB |
1306 | } |
1307 | ||
1308 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1309 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
1bc981d2 JB |
1310 | If optional argument FRAME is t, search all visible frames.\n\ |
1311 | If FRAME is nil, search only the selected frame.\n\ | |
75d8f668 | 1312 | If FRAME is a frame, search only that frame.\n") |
44fa5b1e JB |
1313 | (buffer, frame) |
1314 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1315 | { |
1316 | buffer = Fget_buffer (buffer); | |
1317 | if (XTYPE (buffer) == Lisp_Buffer) | |
44fa5b1e | 1318 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1319 | else |
1320 | return Qnil; | |
1321 | } | |
1322 | ||
1323 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1324 | 0, 1, "", | |
44fa5b1e | 1325 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1326 | Only the frame WINDOW is on is affected.\n\ |
1327 | This function tries to reduce display jumps\n\ | |
1328 | by keeping the text previously visible in WINDOW\n\ | |
1329 | in the same place on the frame. Doing this depends on\n\ | |
1330 | the value of (window-start WINDOW), so if calling this function\n\ | |
1331 | in a program gives strange scrolling, make sure the window-start\n\ | |
1332 | value is reasonable when this function is called.") | |
7ab12479 JB |
1333 | (window) |
1334 | Lisp_Object window; | |
1335 | { | |
1336 | struct window *w; | |
7ab12479 | 1337 | struct buffer *obuf = current_buffer; |
f16a1ed3 | 1338 | int opoint; |
7ab12479 JB |
1339 | int top; |
1340 | ||
265a9e55 | 1341 | if (NILP (window)) |
7ab12479 JB |
1342 | window = selected_window; |
1343 | else | |
605be8af | 1344 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1345 | |
1346 | w = XWINDOW (window); | |
1347 | top = XFASTINT (w->top); | |
1348 | ||
70728a80 | 1349 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 JB |
1350 | |
1351 | Fset_buffer (w->buffer); | |
f16a1ed3 | 1352 | opoint = point; |
7ab12479 | 1353 | SET_PT (marker_position (w->start)); |
4f2eb61d RS |
1354 | /* Like Frecenter but avoid setting w->force_start. */ |
1355 | Fvertical_motion (make_number (- (top - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w)))))); | |
1356 | Fset_marker (w->start, make_number (PT), w->buffer); | |
1357 | w->start_at_line_beg = Fbolp (); | |
7ab12479 | 1358 | |
7ab12479 | 1359 | SET_PT (opoint); |
f16a1ed3 | 1360 | set_buffer_internal (obuf); |
7ab12479 JB |
1361 | return Qnil; |
1362 | } | |
1363 | ||
1364 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1365 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1366 | "Delete all windows showing BUFFER.\n\ |
1367 | Optional second argument FRAME controls which frames are affected.\n\ | |
1368 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1369 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
1370 | If a frame, delete only windows showing BUFFER in that frame.") | |
1371 | (buffer, frame) | |
1372 | Lisp_Object buffer, frame; | |
7ab12479 | 1373 | { |
26f6279d JB |
1374 | #ifdef MULTI_FRAME |
1375 | /* FRAME uses t and nil to mean the opposite of what window_loop | |
1376 | expects. */ | |
1377 | if (! FRAMEP (frame)) | |
1378 | frame = NILP (frame) ? Qt : Qnil; | |
1379 | #else | |
1380 | frame = Qt; | |
1381 | #endif | |
1382 | ||
265a9e55 | 1383 | if (!NILP (buffer)) |
7ab12479 JB |
1384 | { |
1385 | buffer = Fget_buffer (buffer); | |
1386 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1387 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1388 | } |
1389 | return Qnil; | |
1390 | } | |
1391 | ||
1392 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1393 | Sreplace_buffer_in_windows, | |
1394 | 1, 1, "bReplace buffer in windows: ", | |
1395 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1396 | (buffer) | |
1397 | Lisp_Object buffer; | |
1398 | { | |
265a9e55 | 1399 | if (!NILP (buffer)) |
7ab12479 JB |
1400 | { |
1401 | buffer = Fget_buffer (buffer); | |
1402 | CHECK_BUFFER (buffer, 0); | |
1403 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1404 | } | |
1405 | return Qnil; | |
1406 | } | |
1407 | \f | |
1408 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1409 | |
1410 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1411 | might crash Emacs. */ | |
1412 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1413 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1414 | ||
1415 | /* Make sure that window_min_height and window_min_width are | |
1416 | not too small; if they are, set them to safe minima. */ | |
1417 | ||
1418 | static void | |
1419 | check_min_window_sizes () | |
1420 | { | |
1421 | /* Smaller values might permit a crash. */ | |
1422 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1423 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1424 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1425 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1426 | } | |
1427 | ||
1428 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1429 | minimum allowable size. */ | |
605be8af | 1430 | void |
a481b3ea | 1431 | check_frame_size (frame, rows, cols) |
605be8af JB |
1432 | FRAME_PTR frame; |
1433 | int *rows, *cols; | |
a481b3ea | 1434 | { |
628df3bf JB |
1435 | /* For height, we have to see: |
1436 | whether the frame has a minibuffer, | |
1437 | whether it wants a mode line, and | |
1438 | whether it has a menu bar. */ | |
a481b3ea | 1439 | int min_height = |
79f92720 JB |
1440 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1441 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1442 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1443 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1444 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1445 | |
1446 | if (*rows < min_height) | |
1447 | *rows = min_height; | |
1448 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1449 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1450 | } | |
1451 | ||
7ab12479 JB |
1452 | /* Normally the window is deleted if it gets too small. |
1453 | nodelete nonzero means do not do this. | |
1454 | (The caller should check later and do so if appropriate) */ | |
1455 | ||
1456 | set_window_height (window, height, nodelete) | |
1457 | Lisp_Object window; | |
1458 | int height; | |
1459 | int nodelete; | |
1460 | { | |
1461 | register struct window *w = XWINDOW (window); | |
1462 | register struct window *c; | |
1463 | int oheight = XFASTINT (w->height); | |
1464 | int top, pos, lastbot, opos, lastobot; | |
1465 | Lisp_Object child; | |
1466 | ||
a481b3ea JB |
1467 | check_min_window_sizes (); |
1468 | ||
7ab12479 | 1469 | if (!nodelete |
265a9e55 | 1470 | && ! NILP (w->parent) |
7ab12479 JB |
1471 | && height < window_min_height) |
1472 | { | |
1473 | Fdelete_window (window); | |
1474 | return; | |
1475 | } | |
1476 | ||
1477 | XFASTINT (w->last_modified) = 0; | |
1478 | windows_or_buffers_changed++; | |
1479 | XFASTINT (w->height) = height; | |
265a9e55 | 1480 | if (!NILP (w->hchild)) |
7ab12479 | 1481 | { |
265a9e55 | 1482 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1483 | { |
1484 | XWINDOW (child)->top = w->top; | |
1485 | set_window_height (child, height, nodelete); | |
1486 | } | |
1487 | } | |
265a9e55 | 1488 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1489 | { |
1490 | lastbot = top = XFASTINT (w->top); | |
1491 | lastobot = 0; | |
265a9e55 | 1492 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1493 | { |
1494 | c = XWINDOW (child); | |
1495 | ||
1496 | opos = lastobot + XFASTINT (c->height); | |
1497 | ||
1498 | XFASTINT (c->top) = lastbot; | |
1499 | ||
1500 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1501 | ||
1502 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1503 | set_window_height (child, pos + top - lastbot, 1); | |
1504 | ||
1505 | /* Now advance child to next window, | |
1506 | and set lastbot if child was not just deleted. */ | |
1507 | lastbot = pos + top; | |
1508 | lastobot = opos; | |
1509 | } | |
1510 | /* Now delete any children that became too small. */ | |
1511 | if (!nodelete) | |
265a9e55 | 1512 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1513 | { |
1514 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1515 | } | |
1516 | } | |
1517 | } | |
1518 | ||
1519 | /* Recursively set width of WINDOW and its inferiors. */ | |
1520 | ||
1521 | set_window_width (window, width, nodelete) | |
1522 | Lisp_Object window; | |
1523 | int width; | |
1524 | int nodelete; | |
1525 | { | |
1526 | register struct window *w = XWINDOW (window); | |
1527 | register struct window *c; | |
1528 | int owidth = XFASTINT (w->width); | |
1529 | int left, pos, lastright, opos, lastoright; | |
1530 | Lisp_Object child; | |
1531 | ||
1532 | if (!nodelete && width < window_min_width) | |
1533 | { | |
1534 | Fdelete_window (window); | |
1535 | return; | |
1536 | } | |
1537 | ||
1538 | XFASTINT (w->last_modified) = 0; | |
1539 | windows_or_buffers_changed++; | |
1540 | XFASTINT (w->width) = width; | |
265a9e55 | 1541 | if (!NILP (w->vchild)) |
7ab12479 | 1542 | { |
265a9e55 | 1543 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1544 | { |
1545 | XWINDOW (child)->left = w->left; | |
1546 | set_window_width (child, width, nodelete); | |
1547 | } | |
1548 | } | |
265a9e55 | 1549 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1550 | { |
1551 | lastright = left = XFASTINT (w->left); | |
1552 | lastoright = 0; | |
265a9e55 | 1553 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1554 | { |
1555 | c = XWINDOW (child); | |
1556 | ||
1557 | opos = lastoright + XFASTINT (c->width); | |
1558 | ||
1559 | XFASTINT (c->left) = lastright; | |
1560 | ||
1561 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1562 | ||
1563 | /* Inhibit deletion for becoming too small */ | |
1564 | set_window_width (child, pos + left - lastright, 1); | |
1565 | ||
1566 | /* Now advance child to next window, | |
1567 | and set lastright if child was not just deleted. */ | |
1568 | lastright = pos + left, lastoright = opos; | |
1569 | } | |
1570 | /* Delete children that became too small */ | |
1571 | if (!nodelete) | |
265a9e55 | 1572 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1573 | { |
1574 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1575 | } | |
1576 | } | |
1577 | } | |
1578 | \f | |
1d8d96fa | 1579 | int window_select_count; |
7ab12479 JB |
1580 | |
1581 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1582 | "Make WINDOW display BUFFER as its contents.\n\ | |
1583 | BUFFER can be a buffer or buffer name.") | |
1584 | (window, buffer) | |
1585 | register Lisp_Object window, buffer; | |
1586 | { | |
1587 | register Lisp_Object tem; | |
1588 | register struct window *w = decode_window (window); | |
1589 | ||
1590 | buffer = Fget_buffer (buffer); | |
1591 | CHECK_BUFFER (buffer, 1); | |
1592 | ||
265a9e55 | 1593 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1594 | error ("Attempt to display deleted buffer"); |
1595 | ||
1596 | tem = w->buffer; | |
265a9e55 | 1597 | if (NILP (tem)) |
7ab12479 JB |
1598 | error ("Window is deleted"); |
1599 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1600 | is first being set up. */ | |
1601 | { | |
265a9e55 | 1602 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
7ab12479 JB |
1603 | error ("Window is dedicated to %s\n", tem); |
1604 | ||
1605 | unshow_buffer (w); | |
1606 | } | |
1607 | ||
1608 | w->buffer = buffer; | |
5a41ab94 RS |
1609 | w->window_end_pos = 0; |
1610 | w->window_end_valid = Qnil; | |
270967b2 | 1611 | w->hscroll = 0; |
7ab12479 JB |
1612 | Fset_marker (w->pointm, |
1613 | make_number (BUF_PT (XBUFFER (buffer))), | |
1614 | buffer); | |
1615 | set_marker_restricted (w->start, | |
1616 | make_number (XBUFFER (buffer)->last_window_start), | |
1617 | buffer); | |
1618 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1619 | w->force_start = Qnil; |
7ab12479 JB |
1620 | XFASTINT (w->last_modified) = 0; |
1621 | windows_or_buffers_changed++; | |
1622 | if (EQ (window, selected_window)) | |
1623 | Fset_buffer (buffer); | |
1624 | ||
1625 | return Qnil; | |
1626 | } | |
1627 | ||
1628 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1629 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1630 | The main editor command loop selects the buffer of the selected window\n\ | |
1631 | before each command.") | |
1632 | (window) | |
1633 | register Lisp_Object window; | |
1634 | { | |
1635 | register struct window *w; | |
1636 | register struct window *ow = XWINDOW (selected_window); | |
1637 | ||
605be8af | 1638 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1639 | |
1640 | w = XWINDOW (window); | |
1641 | ||
265a9e55 | 1642 | if (NILP (w->buffer)) |
7ab12479 JB |
1643 | error ("Trying to select deleted window or non-leaf window"); |
1644 | ||
1645 | XFASTINT (w->use_time) = ++window_select_count; | |
1646 | if (EQ (window, selected_window)) | |
1647 | return window; | |
1648 | ||
1649 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1650 | ow->buffer); | |
1651 | ||
1652 | selected_window = window; | |
44fa5b1e JB |
1653 | #ifdef MULTI_FRAME |
1654 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) | |
7ab12479 | 1655 | { |
44fa5b1e | 1656 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
d5b2799e | 1657 | Fhandle_switch_frame (WINDOW_FRAME (w), Qnil); |
7ab12479 JB |
1658 | } |
1659 | else | |
44fa5b1e | 1660 | selected_frame->selected_window = window; |
7ab12479 JB |
1661 | #endif |
1662 | ||
1663 | record_buffer (w->buffer); | |
1664 | Fset_buffer (w->buffer); | |
1665 | ||
1666 | /* Go to the point recorded in the window. | |
1667 | This is important when the buffer is in more | |
1668 | than one window. It also matters when | |
1669 | redisplay_window has altered point after scrolling, | |
1670 | because it makes the change only in the window. */ | |
1671 | { | |
1672 | register int new_point = marker_position (w->pointm); | |
1673 | if (new_point < BEGV) | |
1674 | SET_PT (BEGV); | |
1675 | if (new_point > ZV) | |
1676 | SET_PT (ZV); | |
1677 | else | |
1678 | SET_PT (new_point); | |
1679 | } | |
1680 | ||
1681 | windows_or_buffers_changed++; | |
1682 | return window; | |
1683 | } | |
1684 | ||
35aaf00c | 1685 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
6648f23a | 1686 | "BDisplay buffer: \nP", |
7ab12479 JB |
1687 | "Make BUFFER appear in some window but don't select it.\n\ |
1688 | BUFFER can be a buffer or a buffer name.\n\ | |
1689 | If BUFFER is shown already in some window, just use that one,\n\ | |
1690 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 1691 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 1692 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
7ab12479 JB |
1693 | Returns the window displaying BUFFER.") |
1694 | (buffer, not_this_window) | |
1695 | register Lisp_Object buffer, not_this_window; | |
1696 | { | |
1697 | register Lisp_Object window; | |
1698 | ||
1699 | buffer = Fget_buffer (buffer); | |
1700 | CHECK_BUFFER (buffer, 0); | |
1701 | ||
265a9e55 | 1702 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1703 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1704 | ||
265a9e55 | 1705 | if (NILP (not_this_window) |
7ab12479 JB |
1706 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1707 | return selected_window; | |
1708 | ||
5141b901 RS |
1709 | /* If pop_up_frames, look for a window on any frame, showing BUFFER. */ |
1710 | window = Fget_buffer_window (buffer, pop_up_frames ? Qt : Qnil); | |
265a9e55 JB |
1711 | if (!NILP (window) |
1712 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
7ab12479 JB |
1713 | return window; |
1714 | ||
44fa5b1e JB |
1715 | #ifdef MULTI_FRAME |
1716 | /* If there are no frames open that have more than a minibuffer, | |
1717 | we need to create a new frame. */ | |
1718 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 JB |
1719 | { |
1720 | window | |
44fa5b1e | 1721 | = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 JB |
1722 | Fset_window_buffer (window, buffer); |
1723 | #if 0 | |
d5b2799e | 1724 | Fhandle_switch_frame (XWINDOW (window)->frame, Qnil); |
7ab12479 JB |
1725 | #endif |
1726 | return window; | |
1727 | } | |
44fa5b1e | 1728 | #endif /* MULTI_FRAME */ |
7ab12479 | 1729 | |
43bad991 | 1730 | if (pop_up_windows |
44fa5b1e JB |
1731 | #ifdef MULTI_FRAME |
1732 | || FRAME_MINIBUF_ONLY_P (selected_frame) | |
43bad991 JB |
1733 | #endif |
1734 | ) | |
7ab12479 | 1735 | { |
44fa5b1e | 1736 | Lisp_Object frames = Qnil; |
43bad991 | 1737 | |
44fa5b1e JB |
1738 | #ifdef MULTI_FRAME |
1739 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) | |
1740 | XSET (frames, Lisp_Frame, last_nonminibuf_frame); | |
7ab12479 JB |
1741 | #endif |
1742 | /* Don't try to create a window if would get an error */ | |
1743 | if (split_height_threshold < window_min_height << 1) | |
1744 | split_height_threshold = window_min_height << 1; | |
1745 | ||
44fa5b1e | 1746 | window = Fget_largest_window (frames); |
7ab12479 | 1747 | |
265a9e55 | 1748 | if (!NILP (window) |
7ab12479 | 1749 | && window_height (window) >= split_height_threshold |
535e0b8e JB |
1750 | && (XFASTINT (XWINDOW (window)->width) |
1751 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) | |
7ab12479 JB |
1752 | window = Fsplit_window (window, Qnil, Qnil); |
1753 | else | |
1754 | { | |
44fa5b1e | 1755 | window = Fget_lru_window (frames); |
7ab12479 JB |
1756 | if ((EQ (window, selected_window) |
1757 | || EQ (XWINDOW (window)->parent, Qnil)) | |
1758 | && window_height (window) >= window_min_height << 1) | |
1759 | window = Fsplit_window (window, Qnil, Qnil); | |
1760 | } | |
1761 | } | |
1762 | else | |
1763 | window = Fget_lru_window (Qnil); | |
1764 | ||
1765 | Fset_window_buffer (window, buffer); | |
1766 | return window; | |
1767 | } | |
1768 | ||
1769 | void | |
1770 | temp_output_buffer_show (buf) | |
1771 | register Lisp_Object buf; | |
1772 | { | |
1773 | register struct buffer *old = current_buffer; | |
1774 | register Lisp_Object window; | |
1775 | register struct window *w; | |
1776 | ||
1777 | Fset_buffer (buf); | |
1778 | XBUFFER (buf)->save_modified = MODIFF; | |
1779 | BEGV = BEG; | |
1780 | ZV = Z; | |
1781 | SET_PT (BEG); | |
1782 | clip_changed = 1; | |
1783 | set_buffer_internal (old); | |
1784 | ||
1785 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
1786 | call1 (Vtemp_buffer_show_function, buf); | |
1787 | else | |
1788 | { | |
1789 | window = Fdisplay_buffer (buf, Qnil); | |
1790 | ||
44fa5b1e JB |
1791 | #ifdef MULTI_FRAME |
1792 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) | |
1793 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
1794 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
1795 | Vminibuf_scroll_window = window; |
1796 | w = XWINDOW (window); | |
1797 | XFASTINT (w->hscroll) = 0; | |
1798 | set_marker_restricted (w->start, make_number (1), buf); | |
1799 | set_marker_restricted (w->pointm, make_number (1), buf); | |
1800 | } | |
1801 | } | |
1802 | \f | |
1803 | static | |
1804 | make_dummy_parent (window) | |
1805 | Lisp_Object window; | |
1806 | { | |
1807 | register Lisp_Object old, new; | |
1808 | register struct window *o, *p; | |
1809 | ||
1810 | old = window; | |
1811 | XSETTYPE (old, Lisp_Vector); | |
1812 | new = Fcopy_sequence (old); | |
1813 | XSETTYPE (new, Lisp_Window); | |
1814 | ||
1815 | o = XWINDOW (old); | |
1816 | p = XWINDOW (new); | |
1817 | XFASTINT (p->sequence_number) = ++sequence_number; | |
1818 | ||
1819 | /* Put new into window structure in place of window */ | |
1820 | replace_window (window, new); | |
1821 | ||
1822 | o->next = Qnil; | |
1823 | o->prev = Qnil; | |
1824 | o->vchild = Qnil; | |
1825 | o->hchild = Qnil; | |
1826 | o->parent = new; | |
1827 | ||
1828 | p->start = Qnil; | |
1829 | p->pointm = Qnil; | |
1830 | p->buffer = Qnil; | |
1831 | } | |
1832 | ||
1833 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
1834 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
1835 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
1836 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
1837 | and put SIZE columns in the first of the pair.") | |
1838 | (window, chsize, horflag) | |
1839 | Lisp_Object window, chsize, horflag; | |
1840 | { | |
1841 | register Lisp_Object new; | |
1842 | register struct window *o, *p; | |
1843 | register int size; | |
1844 | ||
265a9e55 | 1845 | if (NILP (window)) |
7ab12479 JB |
1846 | window = selected_window; |
1847 | else | |
605be8af | 1848 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1849 | |
1850 | o = XWINDOW (window); | |
1851 | ||
265a9e55 | 1852 | if (NILP (chsize)) |
7ab12479 | 1853 | { |
265a9e55 | 1854 | if (!NILP (horflag)) |
7ab12479 JB |
1855 | /* Round odd size up, since this is for the left-hand window, |
1856 | and it will lose a column for the separators. */ | |
1857 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
1858 | else | |
1859 | size = XFASTINT (o->height) >> 1; | |
1860 | } | |
1861 | else | |
1862 | { | |
1863 | CHECK_NUMBER (chsize, 1); | |
1864 | size = XINT (chsize); | |
1865 | } | |
1866 | ||
1867 | if (MINI_WINDOW_P (o)) | |
1868 | error ("Attempt to split minibuffer window"); | |
44fa5b1e JB |
1869 | else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
1870 | error ("Attempt to split unsplittable frame"); | |
7ab12479 | 1871 | |
a481b3ea | 1872 | check_min_window_sizes (); |
7ab12479 | 1873 | |
265a9e55 | 1874 | if (NILP (horflag)) |
7ab12479 JB |
1875 | { |
1876 | if (size < window_min_height | |
1877 | || size + window_min_height > XFASTINT (o->height)) | |
1878 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1879 | if (NILP (o->parent) |
1880 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
1881 | { |
1882 | make_dummy_parent (window); | |
1883 | new = o->parent; | |
1884 | XWINDOW (new)->vchild = window; | |
1885 | } | |
1886 | } | |
1887 | else | |
1888 | { | |
1889 | if (size < window_min_width | |
1890 | || size + window_min_width > XFASTINT (o->width)) | |
1891 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1892 | if (NILP (o->parent) |
1893 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
1894 | { |
1895 | make_dummy_parent (window); | |
1896 | new = o->parent; | |
1897 | XWINDOW (new)->hchild = window; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | /* Now we know that window's parent is a vertical combination | |
1902 | if we are dividing vertically, or a horizontal combination | |
1903 | if we are making side-by-side windows */ | |
1904 | ||
1905 | windows_or_buffers_changed++; | |
1906 | new = make_window (); | |
1907 | p = XWINDOW (new); | |
1908 | ||
44fa5b1e | 1909 | p->frame = o->frame; |
7ab12479 | 1910 | p->next = o->next; |
265a9e55 | 1911 | if (!NILP (p->next)) |
7ab12479 JB |
1912 | XWINDOW (p->next)->prev = new; |
1913 | p->prev = window; | |
1914 | o->next = new; | |
1915 | p->parent = o->parent; | |
1916 | p->buffer = Qt; | |
1917 | ||
1918 | Fset_window_buffer (new, o->buffer); | |
1919 | ||
44fa5b1e | 1920 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 1921 | |
265a9e55 | 1922 | if (!NILP (horflag)) |
7ab12479 JB |
1923 | { |
1924 | p->height = o->height; | |
1925 | p->top = o->top; | |
1926 | XFASTINT (p->width) = XFASTINT (o->width) - size; | |
1927 | XFASTINT (o->width) = size; | |
1928 | XFASTINT (p->left) = XFASTINT (o->left) + size; | |
1929 | } | |
1930 | else | |
1931 | { | |
1932 | p->left = o->left; | |
1933 | p->width = o->width; | |
1934 | XFASTINT (p->height) = XFASTINT (o->height) - size; | |
1935 | XFASTINT (o->height) = size; | |
1936 | XFASTINT (p->top) = XFASTINT (o->top) + size; | |
1937 | } | |
1938 | ||
1939 | return new; | |
1940 | } | |
1941 | \f | |
1942 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
1943 | "Make current window ARG lines bigger.\n\ | |
1944 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
1945 | (n, side) | |
1946 | register Lisp_Object n, side; | |
1947 | { | |
1948 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1949 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
1950 | return Qnil; |
1951 | } | |
1952 | ||
1953 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
1954 | "Make current window ARG lines smaller.\n\ | |
1955 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
1956 | (n, side) | |
1957 | register Lisp_Object n, side; | |
1958 | { | |
1959 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1960 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
1961 | return Qnil; |
1962 | } | |
1963 | ||
1964 | int | |
1965 | window_height (window) | |
1966 | Lisp_Object window; | |
1967 | { | |
1968 | register struct window *p = XWINDOW (window); | |
1969 | return XFASTINT (p->height); | |
1970 | } | |
1971 | ||
1972 | int | |
1973 | window_width (window) | |
1974 | Lisp_Object window; | |
1975 | { | |
1976 | register struct window *p = XWINDOW (window); | |
1977 | return XFASTINT (p->width); | |
1978 | } | |
1979 | ||
05c2896a JB |
1980 | #define MINSIZE(w) \ |
1981 | (widthflag \ | |
1982 | ? window_min_width \ | |
1983 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
1984 | |
1985 | #define CURBEG(w) \ | |
05c2896a | 1986 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
1987 | |
1988 | #define CURSIZE(w) \ | |
05c2896a | 1989 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
1990 | |
1991 | /* Unlike set_window_height, this function | |
1992 | also changes the heights of the siblings so as to | |
1993 | keep everything consistent. */ | |
1994 | ||
1995 | change_window_height (delta, widthflag) | |
1996 | register int delta; | |
1997 | int widthflag; | |
1998 | { | |
1999 | register Lisp_Object parent; | |
2000 | Lisp_Object window; | |
2001 | register struct window *p; | |
2002 | int *sizep; | |
2003 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2004 | register int (*setsizefun) () = (widthflag | |
2005 | ? set_window_width | |
2006 | : set_window_height); | |
2007 | ||
a481b3ea | 2008 | check_min_window_sizes (); |
7ab12479 JB |
2009 | |
2010 | window = selected_window; | |
2011 | while (1) | |
2012 | { | |
2013 | p = XWINDOW (window); | |
2014 | parent = p->parent; | |
265a9e55 | 2015 | if (NILP (parent)) |
7ab12479 JB |
2016 | { |
2017 | if (widthflag) | |
2018 | error ("No other window to side of this one"); | |
2019 | break; | |
2020 | } | |
265a9e55 JB |
2021 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2022 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2023 | break; |
2024 | window = parent; | |
2025 | } | |
2026 | ||
05c2896a | 2027 | sizep = &CURSIZE (window); |
7ab12479 | 2028 | |
05c2896a | 2029 | if (*sizep + delta < MINSIZE (window)) |
7ab12479 JB |
2030 | { |
2031 | Fdelete_window (window); | |
2032 | return; | |
2033 | } | |
2034 | ||
2035 | { | |
2036 | register int maxdelta; | |
7ab12479 | 2037 | |
265a9e55 JB |
2038 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2039 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2040 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2041 | /* This is a frame with only one window, a minibuffer-only |
2042 | or a minibufferless frame. */ | |
d5783c40 | 2043 | : (delta = 0)); |
7ab12479 JB |
2044 | |
2045 | if (delta > maxdelta) | |
2046 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2047 | the full frame, or make the only window aside from the |
2048 | minibuffer the full frame. */ | |
7ab12479 | 2049 | delta = maxdelta; |
d5783c40 JB |
2050 | |
2051 | if (delta == 0) | |
2052 | return; | |
7ab12479 JB |
2053 | } |
2054 | ||
265a9e55 | 2055 | if (!NILP (p->next) && |
7ab12479 JB |
2056 | (*sizefun) (p->next) - delta >= MINSIZE (p->next)) |
2057 | { | |
2058 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
2059 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 2060 | CURBEG (p->next) += delta; |
7ab12479 JB |
2061 | /* This does not change size of p->next, |
2062 | but it propagates the new top edge to its children */ | |
2063 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
2064 | } | |
265a9e55 | 2065 | else if (!NILP (p->prev) && |
7ab12479 JB |
2066 | (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) |
2067 | { | |
2068 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 2069 | CURBEG (window) -= delta; |
7ab12479 JB |
2070 | (*setsizefun) (window, *sizep + delta, 0); |
2071 | } | |
2072 | else | |
2073 | { | |
2074 | register int delta1; | |
2075 | register int opht = (*sizefun) (parent); | |
2076 | ||
2077 | /* If trying to grow this window to or beyond size of the parent, | |
2078 | make delta1 so big that, on shrinking back down, | |
2079 | all the siblings end up with less than one line and are deleted. */ | |
2080 | if (opht <= *sizep + delta) | |
2081 | delta1 = opht * opht * 2; | |
2082 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2083 | lines to this window and to the parent, and then shrink | |
2084 | the parent back to its original size, the new proportional | |
2085 | size of this window will increase by delta. */ | |
2086 | else | |
2087 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2088 | ||
2089 | /* Add delta1 lines or columns to this window, and to the parent, | |
2090 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2091 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2092 | (*setsizefun) (window, *sizep + delta1, 0); |
2093 | ||
2094 | /* Squeeze out delta1 lines or columns from our parent, | |
2095 | shriking this window and siblings proportionately. | |
2096 | This brings parent back to correct size. | |
2097 | Delta1 was calculated so this makes this window the desired size, | |
2098 | taking it all out of the siblings. */ | |
2099 | (*setsizefun) (parent, opht, 0); | |
2100 | } | |
2101 | ||
2102 | XFASTINT (p->last_modified) = 0; | |
2103 | } | |
2104 | #undef MINSIZE | |
2105 | #undef CURBEG | |
2106 | #undef CURSIZE | |
2107 | ||
2108 | \f | |
2109 | /* Return number of lines of text (not counting mode line) in W. */ | |
2110 | ||
2111 | int | |
2112 | window_internal_height (w) | |
2113 | struct window *w; | |
2114 | { | |
2115 | int ht = XFASTINT (w->height); | |
2116 | ||
2117 | if (MINI_WINDOW_P (w)) | |
2118 | return ht; | |
2119 | ||
265a9e55 JB |
2120 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2121 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2122 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2123 | return ht - 1; |
2124 | ||
2125 | return ht; | |
2126 | } | |
2127 | ||
535e0b8e JB |
2128 | |
2129 | /* Return the number of columns in W. | |
a3c87d4e | 2130 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2131 | separating W from the sibling to its right. */ |
2132 | int | |
2133 | window_internal_width (w) | |
2134 | struct window *w; | |
2135 | { | |
2136 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
2137 | int left = XINT (w->left); | |
2138 | int width = XINT (w->width); | |
2139 | ||
2140 | /* If this window is flush against the right edge of the frame, its | |
2141 | internal width is its full width. */ | |
2142 | if (left + width >= FRAME_WIDTH (f)) | |
2143 | return width; | |
2144 | ||
2145 | /* If we are not flush right, then our rightmost columns are | |
2146 | occupied by some sort of separator. */ | |
2147 | ||
a3c87d4e JB |
2148 | /* Scroll bars occupy a few columns. */ |
2149 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
2150 | return width - VERTICAL_SCROLL_BAR_WIDTH; | |
535e0b8e JB |
2151 | |
2152 | /* The column of `|' characters separating side-by-side windows | |
2153 | occupies one column only. */ | |
2154 | return width - 1; | |
2155 | } | |
2156 | ||
2157 | ||
7ab12479 JB |
2158 | /* Scroll contents of window WINDOW up N lines. */ |
2159 | ||
2160 | void | |
f8026fd8 | 2161 | window_scroll (window, n, noerror) |
7ab12479 JB |
2162 | Lisp_Object window; |
2163 | int n; | |
f8026fd8 | 2164 | int noerror; |
7ab12479 JB |
2165 | { |
2166 | register struct window *w = XWINDOW (window); | |
2167 | register int opoint = point; | |
2168 | register int pos; | |
2169 | register int ht = window_internal_height (w); | |
2170 | register Lisp_Object tem; | |
2171 | int lose; | |
2172 | Lisp_Object bolp, nmoved; | |
2173 | ||
2174 | XFASTINT (tem) = point; | |
2175 | tem = Fpos_visible_in_window_p (tem, window); | |
2176 | ||
265a9e55 | 2177 | if (NILP (tem)) |
7ab12479 JB |
2178 | { |
2179 | Fvertical_motion (make_number (- ht / 2)); | |
2180 | XFASTINT (tem) = point; | |
2181 | Fset_marker (w->start, tem, w->buffer); | |
2182 | w->force_start = Qt; | |
2183 | } | |
2184 | ||
2185 | SET_PT (marker_position (w->start)); | |
2186 | lose = n < 0 && point == BEGV; | |
2187 | Fvertical_motion (make_number (n)); | |
2188 | pos = point; | |
2189 | bolp = Fbolp (); | |
2190 | SET_PT (opoint); | |
2191 | ||
2192 | if (lose) | |
f8026fd8 JB |
2193 | { |
2194 | if (noerror) | |
2195 | return; | |
2196 | else | |
2197 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2198 | } | |
7ab12479 JB |
2199 | |
2200 | if (pos < ZV) | |
7ab12479 JB |
2201 | { |
2202 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2203 | w->start_at_line_beg = bolp; | |
2204 | w->update_mode_line = Qt; | |
2205 | XFASTINT (w->last_modified) = 0; | |
2206 | if (pos > opoint) | |
2207 | SET_PT (pos); | |
2208 | if (n < 0) | |
2209 | { | |
2210 | SET_PT (pos); | |
2211 | tem = Fvertical_motion (make_number (ht)); | |
2212 | if (point > opoint || XFASTINT (tem) < ht) | |
2213 | SET_PT (opoint); | |
2214 | else | |
2215 | Fvertical_motion (make_number (-1)); | |
2216 | } | |
2217 | } | |
2218 | else | |
f8026fd8 JB |
2219 | { |
2220 | if (noerror) | |
2221 | return; | |
2222 | else | |
2223 | Fsignal (Qend_of_buffer, Qnil); | |
2224 | } | |
7ab12479 JB |
2225 | } |
2226 | \f | |
2227 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2228 | ||
2229 | static void | |
2230 | scroll_command (n, direction) | |
2231 | register Lisp_Object n; | |
2232 | int direction; | |
2233 | { | |
2234 | register int defalt; | |
2235 | int count = specpdl_ptr - specpdl; | |
2236 | ||
95605e15 JB |
2237 | /* If selected window's buffer isn't current, make it current for the moment. |
2238 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2239 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2240 | { |
2241 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2242 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2243 | } | |
7ab12479 JB |
2244 | |
2245 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2246 | - next_screen_context_lines); | |
2247 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2248 | ||
265a9e55 | 2249 | if (NILP (n)) |
f8026fd8 | 2250 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2251 | else if (EQ (n, Qminus)) |
f8026fd8 | 2252 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2253 | else |
2254 | { | |
2255 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2256 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2257 | } |
95605e15 JB |
2258 | |
2259 | unbind_to (count, Qnil); | |
7ab12479 JB |
2260 | } |
2261 | ||
2262 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2263 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2264 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2265 | When calling from a program, supply a number as argument or nil.") | |
2266 | (n) | |
2267 | Lisp_Object n; | |
2268 | { | |
2269 | scroll_command (n, 1); | |
2270 | return Qnil; | |
2271 | } | |
2272 | ||
2273 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2274 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2275 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2276 | When calling from a program, supply a number as argument or nil.") | |
2277 | (n) | |
2278 | Lisp_Object n; | |
2279 | { | |
2280 | scroll_command (n, -1); | |
2281 | return Qnil; | |
2282 | } | |
2283 | ||
2284 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
99e5add3 | 2285 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ |
7ab12479 JB |
2286 | The next window is the one below the current one; or the one at the top\n\ |
2287 | if the current one is at the bottom.\n\ | |
2288 | When calling from a program, supply a number as argument or nil.\n\ | |
2289 | \n\ | |
77b24de6 | 2290 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
7ab12479 JB |
2291 | specifies the window to scroll.\n\ |
2292 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2293 | showing that buffer, popping the buffer up if necessary.") | |
2294 | (n) | |
2295 | register Lisp_Object n; | |
2296 | { | |
2297 | register Lisp_Object window; | |
2298 | register int ht; | |
2299 | register struct window *w; | |
2300 | register int count = specpdl_ptr - specpdl; | |
2301 | ||
2302 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2303 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2304 | window = Vminibuf_scroll_window; |
2305 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2306 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2307 | { |
2308 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2309 | if (NILP (window)) |
7ab12479 JB |
2310 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2311 | } | |
2312 | else | |
dbc4e1c1 JB |
2313 | { |
2314 | /* Nothing specified; look for a neighboring window on the same | |
2315 | frame. */ | |
2316 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2317 | ||
2318 | if (EQ (window, selected_window)) | |
2319 | /* That didn't get us anywhere; look for a window on another | |
2320 | visible frame. */ | |
2321 | do | |
2322 | window = Fnext_window (window, Qnil, Qt); | |
2323 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2324 | && ! EQ (window, selected_window)); | |
2325 | } | |
2326 | ||
605be8af | 2327 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2328 | |
2329 | if (EQ (window, selected_window)) | |
2330 | error ("There is no other window"); | |
2331 | ||
2332 | w = XWINDOW (window); | |
2333 | ht = window_internal_height (w); | |
2334 | ||
2335 | /* Don't screw up if window_scroll gets an error. */ | |
2336 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2337 | ||
2338 | Fset_buffer (w->buffer); | |
2339 | SET_PT (marker_position (w->pointm)); | |
2340 | ||
265a9e55 | 2341 | if (NILP (n)) |
f8026fd8 | 2342 | window_scroll (window, ht - next_screen_context_lines, 1); |
7ab12479 | 2343 | else if (EQ (n, Qminus)) |
f8026fd8 | 2344 | window_scroll (window, next_screen_context_lines - ht, 1); |
7ab12479 JB |
2345 | else |
2346 | { | |
2347 | if (XTYPE (n) == Lisp_Cons) | |
2348 | n = Fcar (n); | |
2349 | CHECK_NUMBER (n, 0); | |
f8026fd8 | 2350 | window_scroll (window, XINT (n), 1); |
7ab12479 JB |
2351 | } |
2352 | ||
2353 | Fset_marker (w->pointm, make_number (point), Qnil); | |
f4e7b2c2 | 2354 | unbind_to (count, Qnil); |
7ab12479 JB |
2355 | |
2356 | return Qnil; | |
2357 | } | |
2358 | \f | |
644b477c | 2359 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
2360 | "Scroll selected window display ARG columns left.\n\ |
2361 | Default for ARG is window width minus 2.") | |
2362 | (arg) | |
2363 | register Lisp_Object arg; | |
2364 | { | |
2365 | ||
265a9e55 | 2366 | if (NILP (arg)) |
b8baad40 | 2367 | XFASTINT (arg) = window_internal_width (XWINDOW (selected_window)) - 2; |
7ab12479 JB |
2368 | else |
2369 | arg = Fprefix_numeric_value (arg); | |
2370 | ||
2371 | return | |
2372 | Fset_window_hscroll (selected_window, | |
2373 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2374 | + XINT (arg))); | |
2375 | } | |
2376 | ||
644b477c | 2377 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
2378 | "Scroll selected window display ARG columns right.\n\ |
2379 | Default for ARG is window width minus 2.") | |
2380 | (arg) | |
2381 | register Lisp_Object arg; | |
2382 | { | |
265a9e55 | 2383 | if (NILP (arg)) |
b8baad40 | 2384 | XFASTINT (arg) = window_internal_width (XWINDOW (selected_window)) - 2; |
7ab12479 JB |
2385 | else |
2386 | arg = Fprefix_numeric_value (arg); | |
2387 | ||
2388 | return | |
2389 | Fset_window_hscroll (selected_window, | |
2390 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2391 | - XINT (arg))); | |
2392 | } | |
2393 | ||
2394 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2395 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2396 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e JB |
2397 | Just C-u as prefix means put point in the center of the window.\n\ |
2398 | No arg (i.e., it is nil) erases the entire frame and then\n\ | |
2399 | redraws with point in the center of the current window.") | |
7ab12479 JB |
2400 | (n) |
2401 | register Lisp_Object n; | |
2402 | { | |
2403 | register struct window *w = XWINDOW (selected_window); | |
2404 | register int ht = window_internal_height (w); | |
2405 | register int opoint = point; | |
2406 | ||
265a9e55 | 2407 | if (NILP (n)) |
7ab12479 | 2408 | { |
44fa5b1e | 2409 | extern int frame_garbaged; |
7ab12479 | 2410 | |
44fa5b1e | 2411 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
7ab12479 JB |
2412 | XFASTINT (n) = ht / 2; |
2413 | } | |
2414 | else if (XTYPE (n) == Lisp_Cons) /* Just C-u. */ | |
2415 | { | |
2416 | XFASTINT (n) = ht / 2; | |
2417 | } | |
2418 | else | |
2419 | { | |
2420 | n = Fprefix_numeric_value (n); | |
2421 | CHECK_NUMBER (n, 0); | |
2422 | } | |
2423 | ||
2424 | if (XINT (n) < 0) | |
2425 | XSETINT (n, XINT (n) + ht); | |
2426 | ||
2427 | XSETINT (n, - XINT (n)); | |
2428 | ||
2429 | Fvertical_motion (n); | |
2430 | Fset_marker (w->start, make_number (point), w->buffer); | |
2431 | w->start_at_line_beg = Fbolp (); | |
2432 | ||
2433 | SET_PT (opoint); | |
2434 | w->force_start = Qt; | |
2435 | ||
2436 | return Qnil; | |
2437 | } | |
2438 | \f | |
2439 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2440 | 1, 1, "P", | |
2441 | "Position point relative to window.\n\ | |
2442 | With no argument, position text at center of window.\n\ | |
44fa5b1e | 2443 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2444 | negative means relative to bottom of window.") |
2445 | (arg) | |
2446 | register Lisp_Object arg; | |
2447 | { | |
2448 | register struct window *w = XWINDOW (selected_window); | |
2449 | register int height = window_internal_height (w); | |
2450 | register int start; | |
2451 | ||
265a9e55 | 2452 | if (NILP (arg)) |
7ab12479 JB |
2453 | XFASTINT (arg) = height / 2; |
2454 | else | |
2455 | { | |
2456 | arg = Fprefix_numeric_value (arg); | |
2457 | if (XINT (arg) < 0) | |
2458 | XSETINT (arg, XINT (arg) + height); | |
2459 | } | |
2460 | ||
2461 | start = marker_position (w->start); | |
2462 | if (start < BEGV || start > ZV) | |
2463 | { | |
2464 | Fvertical_motion (make_number (- height / 2)); | |
2465 | Fset_marker (w->start, make_number (point), w->buffer); | |
2466 | w->start_at_line_beg = Fbolp (); | |
2467 | w->force_start = Qt; | |
2468 | } | |
2469 | else | |
2470 | SET_PT (start); | |
2471 | ||
2472 | return Fvertical_motion (arg); | |
2473 | } | |
2474 | \f | |
2475 | struct save_window_data | |
2476 | { | |
2477 | int size_from_Lisp_Vector_struct; | |
2478 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
8f6ea2e9 | 2479 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 2480 | Lisp_Object selected_frame; |
7ab12479 JB |
2481 | Lisp_Object current_window; |
2482 | Lisp_Object current_buffer; | |
2483 | Lisp_Object minibuf_scroll_window; | |
2484 | Lisp_Object root_window; | |
bdc727bf | 2485 | Lisp_Object focus_frame; |
7ab12479 JB |
2486 | /* A vector, interpreted as a struct saved_window */ |
2487 | Lisp_Object saved_windows; | |
2488 | }; | |
ff06df24 JB |
2489 | |
2490 | /* Arg to Fmake_vector */ | |
2491 | #define SAVE_WINDOW_DATA_SIZE \ | |
2492 | ((sizeof (struct save_window_data) \ | |
2493 | - (sizeof (struct Lisp_Vector) \ | |
2494 | /* Don't count the contents member of the struct Lisp_Vector */ \ | |
2495 | - sizeof (Lisp_Object))) \ | |
2496 | / sizeof (Lisp_Object)) | |
7ab12479 JB |
2497 | |
2498 | /* This is saved as a Lisp_Vector */ | |
2499 | struct saved_window | |
2500 | { | |
2501 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2502 | int size_from_Lisp_Vector_struct; | |
2503 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2504 | ||
2505 | Lisp_Object window; | |
2506 | Lisp_Object buffer, start, pointm, mark; | |
2507 | Lisp_Object left, top, width, height, hscroll; | |
2508 | Lisp_Object parent, prev; | |
2509 | Lisp_Object start_at_line_beg; | |
2510 | Lisp_Object display_table; | |
2511 | }; | |
2512 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2513 | ||
2514 | #define SAVED_WINDOW_N(swv,n) \ | |
2515 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2516 | ||
2517 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2518 | "T if OBJECT is a window-configration object.") | |
2519 | (obj) | |
2520 | Lisp_Object obj; | |
2521 | { | |
2522 | if (XTYPE (obj) == Lisp_Window_Configuration) | |
2523 | return Qt; | |
2524 | return Qnil; | |
2525 | } | |
2526 | ||
2527 | ||
d5b2799e RS |
2528 | DEFUN ("set-window-configuration", Fset_window_configuration, |
2529 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
2530 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
2531 | CONFIGURATION must be a value previously returned\n\ | |
2532 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
2533 | (configuration) |
2534 | Lisp_Object configuration; | |
7ab12479 | 2535 | { |
7ab12479 JB |
2536 | register struct save_window_data *data; |
2537 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 2538 | Lisp_Object new_current_buffer; |
fd482be5 | 2539 | Lisp_Object frame; |
44fa5b1e | 2540 | FRAME_PTR f; |
7ab12479 | 2541 | |
2f83aebe | 2542 | while (XTYPE (configuration) != Lisp_Window_Configuration) |
7ab12479 | 2543 | { |
2f83aebe JB |
2544 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
2545 | configuration); | |
7ab12479 JB |
2546 | } |
2547 | ||
2f83aebe | 2548 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
2549 | saved_windows = XVECTOR (data->saved_windows); |
2550 | ||
7ab12479 | 2551 | new_current_buffer = data->current_buffer; |
265a9e55 | 2552 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2553 | new_current_buffer = Qnil; |
2554 | ||
fd482be5 JB |
2555 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
2556 | f = XFRAME (frame); | |
9ace597f | 2557 | |
fd482be5 JB |
2558 | /* If f is a dead frame, don't bother rebuilding its window tree. |
2559 | However, there is other stuff we should still try to do below. */ | |
2560 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 2561 | { |
fd482be5 JB |
2562 | register struct window *w; |
2563 | register struct saved_window *p; | |
2564 | int k; | |
2565 | ||
2566 | /* If the frame has been resized since this window configuration was | |
2567 | made, we change the frame to the size specified in the | |
2568 | configuration, restore the configuration, and then resize it | |
2569 | back. We keep track of the prevailing height in these variables. */ | |
2570 | int previous_frame_height = FRAME_HEIGHT (f); | |
2571 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 2572 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
2573 | |
2574 | if (XFASTINT (data->frame_height) != previous_frame_height | |
2575 | || XFASTINT (data->frame_width) != previous_frame_width) | |
2576 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
8f6ea2e9 KH |
2577 | if (XFASTINT (data->frame_menu_bar_lines) |
2578 | != previous_frame_menu_bar_lines) | |
2579 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
fd482be5 JB |
2580 | |
2581 | windows_or_buffers_changed++; | |
2582 | ||
2583 | /* Kludge Alert! | |
2584 | Mark all windows now on frame as "deleted". | |
2585 | Restoring the new configuration "undeletes" any that are in it. | |
2586 | ||
2587 | Save their current buffers in their height fields, since we may | |
2588 | need it later, if a buffer saved in the configuration is now | |
2589 | dead. */ | |
2590 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
2591 | ||
2592 | for (k = 0; k < saved_windows->size; k++) | |
2593 | { | |
2594 | p = SAVED_WINDOW_N (saved_windows, k); | |
2595 | w = XWINDOW (p->window); | |
2596 | w->next = Qnil; | |
7ab12479 | 2597 | |
fd482be5 JB |
2598 | if (!NILP (p->parent)) |
2599 | w->parent = SAVED_WINDOW_N (saved_windows, | |
2600 | XFASTINT (p->parent))->window; | |
2601 | else | |
2602 | w->parent = Qnil; | |
7ab12479 | 2603 | |
fd482be5 | 2604 | if (!NILP (p->prev)) |
7ab12479 | 2605 | { |
fd482be5 JB |
2606 | w->prev = SAVED_WINDOW_N (saved_windows, |
2607 | XFASTINT (p->prev))->window; | |
2608 | XWINDOW (w->prev)->next = p->window; | |
2609 | } | |
2610 | else | |
2611 | { | |
2612 | w->prev = Qnil; | |
2613 | if (!NILP (w->parent)) | |
2614 | { | |
2615 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
2616 | { | |
2617 | XWINDOW (w->parent)->vchild = p->window; | |
2618 | XWINDOW (w->parent)->hchild = Qnil; | |
2619 | } | |
2620 | else | |
2621 | { | |
2622 | XWINDOW (w->parent)->hchild = p->window; | |
2623 | XWINDOW (w->parent)->vchild = Qnil; | |
2624 | } | |
2625 | } | |
2626 | } | |
2627 | ||
2628 | /* If we squirreled away the buffer in the window's height, | |
2629 | restore it now. */ | |
2630 | if (XTYPE (w->height) == Lisp_Buffer) | |
2631 | w->buffer = w->height; | |
2632 | w->left = p->left; | |
2633 | w->top = p->top; | |
2634 | w->width = p->width; | |
2635 | w->height = p->height; | |
2636 | w->hscroll = p->hscroll; | |
2637 | w->display_table = p->display_table; | |
2638 | XFASTINT (w->last_modified) = 0; | |
2639 | ||
2640 | /* Reinstall the saved buffer and pointers into it. */ | |
2641 | if (NILP (p->buffer)) | |
2642 | w->buffer = p->buffer; | |
2643 | else | |
2644 | { | |
2645 | if (!NILP (XBUFFER (p->buffer)->name)) | |
2646 | /* If saved buffer is alive, install it. */ | |
2647 | { | |
2648 | w->buffer = p->buffer; | |
2649 | w->start_at_line_beg = p->start_at_line_beg; | |
2650 | set_marker_restricted (w->start, | |
2651 | Fmarker_position (p->start), | |
2652 | w->buffer); | |
2653 | set_marker_restricted (w->pointm, | |
2654 | Fmarker_position (p->pointm), | |
2655 | w->buffer); | |
2656 | Fset_marker (XBUFFER (w->buffer)->mark, | |
2657 | Fmarker_position (p->mark), w->buffer); | |
2658 | ||
2659 | /* As documented in Fcurrent_window_configuration, don't | |
2660 | save the location of point in the buffer which was current | |
2661 | when the window configuration was recorded. */ | |
2662 | if (!EQ (p->buffer, new_current_buffer) && | |
2663 | XBUFFER (p->buffer) == current_buffer) | |
2664 | Fgoto_char (w->pointm); | |
2665 | } | |
52a68e98 RS |
2666 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
2667 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 2668 | { |
fd482be5 JB |
2669 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
2670 | /* This will set the markers to beginning of visible | |
2671 | range. */ | |
2672 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2673 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
2674 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
2675 | } |
2676 | else | |
fd482be5 | 2677 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 2678 | are real. */ |
7ab12479 | 2679 | { |
fd482be5 JB |
2680 | /* Set window markers at start of visible range. */ |
2681 | if (XMARKER (w->start)->buffer == 0) | |
2682 | set_marker_restricted (w->start, make_number (0), | |
2683 | w->buffer); | |
2684 | if (XMARKER (w->pointm)->buffer == 0) | |
2685 | set_marker_restricted (w->pointm, | |
2686 | (make_number | |
2687 | (BUF_PT (XBUFFER (w->buffer)))), | |
2688 | w->buffer); | |
2689 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
2690 | } |
2691 | } | |
2692 | } | |
9ace597f | 2693 | |
fd482be5 JB |
2694 | FRAME_ROOT_WINDOW (f) = data->root_window; |
2695 | Fselect_window (data->current_window); | |
7ab12479 | 2696 | |
fd482be5 | 2697 | #ifdef MULTI_FRAME |
db269683 JB |
2698 | if (NILP (data->focus_frame) |
2699 | || (XTYPE (data->focus_frame) == Lisp_Frame | |
2700 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) | |
2701 | Fredirect_frame_focus (frame, data->focus_frame); | |
fd482be5 | 2702 | #endif |
7ab12479 | 2703 | |
fd482be5 JB |
2704 | #if 0 /* I don't understand why this is needed, and it causes problems |
2705 | when the frame's old selected window has been deleted. */ | |
2706 | #ifdef MULTI_FRAME | |
2707 | if (f != selected_frame && ! FRAME_TERMCAP_P (f)) | |
d5b2799e | 2708 | Fhandle_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), Qnil); |
fd482be5 JB |
2709 | #endif |
2710 | #endif | |
2711 | ||
2712 | /* Set the screen height to the value it had before this function. */ | |
2713 | if (previous_frame_height != FRAME_HEIGHT (f) | |
2714 | || previous_frame_width != FRAME_WIDTH (f)) | |
2715 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2716 | 0, 0); | |
8f6ea2e9 KH |
2717 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
2718 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
fd482be5 | 2719 | } |
bdc727bf | 2720 | |
ad854249 | 2721 | #ifdef MULTI_FRAME |
bdc727bf | 2722 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 2723 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
2724 | selected window too, but that doesn't make the call to |
2725 | Fselect_window above totally superfluous; it still sets f's | |
2726 | selected window. */ | |
fd482be5 | 2727 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
d5b2799e | 2728 | Fhandle_switch_frame (data->selected_frame, Qnil); |
ad854249 | 2729 | #endif |
bdc727bf JB |
2730 | |
2731 | if (!NILP (new_current_buffer)) | |
2732 | Fset_buffer (new_current_buffer); | |
2733 | ||
7ab12479 JB |
2734 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
2735 | return (Qnil); | |
2736 | } | |
2737 | ||
44fa5b1e | 2738 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
2739 | by setting their buffers to nil. */ |
2740 | ||
fd482be5 | 2741 | void |
7ab12479 JB |
2742 | delete_all_subwindows (w) |
2743 | register struct window *w; | |
2744 | { | |
265a9e55 | 2745 | if (!NILP (w->next)) |
7ab12479 | 2746 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 2747 | if (!NILP (w->vchild)) |
7ab12479 | 2748 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 2749 | if (!NILP (w->hchild)) |
7ab12479 | 2750 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
2751 | |
2752 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
2753 | ||
2754 | /* We set all three of these fields to nil, to make sure that we can | |
2755 | distinguish this dead window from any live window. Live leaf | |
2756 | windows will have buffer set, and combination windows will have | |
2757 | vchild or hchild set. */ | |
2758 | w->buffer = Qnil; | |
2759 | w->vchild = Qnil; | |
2760 | w->hchild = Qnil; | |
7ab12479 JB |
2761 | } |
2762 | \f | |
2763 | static int | |
2764 | count_windows (window) | |
2765 | register struct window *window; | |
2766 | { | |
2767 | register int count = 1; | |
265a9e55 | 2768 | if (!NILP (window->next)) |
7ab12479 | 2769 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 2770 | if (!NILP (window->vchild)) |
7ab12479 | 2771 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 2772 | if (!NILP (window->hchild)) |
7ab12479 JB |
2773 | count += count_windows (XWINDOW (window->hchild)); |
2774 | return count; | |
2775 | } | |
2776 | ||
2777 | static int | |
2778 | save_window_save (window, vector, i) | |
2779 | Lisp_Object window; | |
2780 | struct Lisp_Vector *vector; | |
2781 | int i; | |
2782 | { | |
2783 | register struct saved_window *p; | |
2784 | register struct window *w; | |
2785 | register Lisp_Object tem; | |
2786 | ||
265a9e55 | 2787 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
2788 | { |
2789 | p = SAVED_WINDOW_N (vector, i); | |
2790 | w = XWINDOW (window); | |
2791 | ||
2792 | XFASTINT (w->temslot) = i++; | |
2793 | p->window = window; | |
2794 | p->buffer = w->buffer; | |
2795 | p->left = w->left; | |
2796 | p->top = w->top; | |
2797 | p->width = w->width; | |
2798 | p->height = w->height; | |
2799 | p->hscroll = w->hscroll; | |
2800 | p->display_table = w->display_table; | |
265a9e55 | 2801 | if (!NILP (w->buffer)) |
7ab12479 JB |
2802 | { |
2803 | /* Save w's value of point in the window configuration. | |
2804 | If w is the selected window, then get the value of point | |
2805 | from the buffer; pointm is garbage in the selected window. */ | |
2806 | if (EQ (window, selected_window)) | |
2807 | { | |
2808 | p->pointm = Fmake_marker (); | |
2809 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
2810 | w->buffer); | |
2811 | } | |
2812 | else | |
2813 | p->pointm = Fcopy_marker (w->pointm); | |
2814 | ||
2815 | p->start = Fcopy_marker (w->start); | |
2816 | p->start_at_line_beg = w->start_at_line_beg; | |
2817 | ||
2818 | tem = XBUFFER (w->buffer)->mark; | |
2819 | p->mark = Fcopy_marker (tem); | |
2820 | } | |
2821 | else | |
2822 | { | |
2823 | p->pointm = Qnil; | |
2824 | p->start = Qnil; | |
2825 | p->mark = Qnil; | |
2826 | p->start_at_line_beg = Qnil; | |
2827 | } | |
2828 | ||
265a9e55 | 2829 | if (NILP (w->parent)) |
7ab12479 JB |
2830 | p->parent = Qnil; |
2831 | else | |
2832 | p->parent = XWINDOW (w->parent)->temslot; | |
2833 | ||
265a9e55 | 2834 | if (NILP (w->prev)) |
7ab12479 JB |
2835 | p->prev = Qnil; |
2836 | else | |
2837 | p->prev = XWINDOW (w->prev)->temslot; | |
2838 | ||
265a9e55 | 2839 | if (!NILP (w->vchild)) |
7ab12479 | 2840 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 2841 | if (!NILP (w->hchild)) |
7ab12479 JB |
2842 | i = save_window_save (w->hchild, vector, i); |
2843 | } | |
2844 | ||
2845 | return i; | |
2846 | } | |
2847 | ||
2848 | DEFUN ("current-window-configuration", | |
43bad991 | 2849 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
2850 | "Return an object representing the current window configuration of FRAME.\n\ |
2851 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
2852 | This describes the number of windows, their sizes and current buffers,\n\ |
2853 | and for each displayed buffer, where display starts, and the positions of\n\ | |
2854 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
2855 | its value is -not- saved.\n\ |
2856 | This also records the currently selected frame, and FRAME's focus\n\ | |
2857 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
2858 | (frame) |
2859 | Lisp_Object frame; | |
7ab12479 JB |
2860 | { |
2861 | register Lisp_Object tem; | |
2862 | register int n_windows; | |
2863 | register struct save_window_data *data; | |
2864 | register int i; | |
44fa5b1e | 2865 | FRAME_PTR f; |
43bad991 | 2866 | |
44fa5b1e JB |
2867 | if (NILP (frame)) |
2868 | f = selected_frame; | |
43bad991 JB |
2869 | else |
2870 | { | |
44fa5b1e JB |
2871 | CHECK_LIVE_FRAME (frame, 0); |
2872 | f = XFRAME (frame); | |
43bad991 | 2873 | } |
7ab12479 | 2874 | |
44fa5b1e | 2875 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
7ab12479 JB |
2876 | data = (struct save_window_data *) |
2877 | XVECTOR (Fmake_vector (make_number (SAVE_WINDOW_DATA_SIZE), | |
2878 | Qnil)); | |
44fa5b1e JB |
2879 | XFASTINT (data->frame_width) = FRAME_WIDTH (f); |
2880 | XFASTINT (data->frame_height) = FRAME_HEIGHT (f); | |
8f6ea2e9 | 2881 | XFASTINT (data->frame_menu_bar_lines) = FRAME_MENU_BAR_LINES (f); |
ad854249 | 2882 | #ifdef MULTI_FRAME |
bdc727bf | 2883 | XSET (data->selected_frame, Lisp_Frame, selected_frame); |
ad854249 | 2884 | #endif |
44fa5b1e | 2885 | data->current_window = FRAME_SELECTED_WINDOW (f); |
7ab12479 JB |
2886 | XSET (data->current_buffer, Lisp_Buffer, current_buffer); |
2887 | data->minibuf_scroll_window = Vminibuf_scroll_window; | |
44fa5b1e | 2888 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 2889 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
2890 | tem = Fmake_vector (make_number (n_windows), Qnil); |
2891 | data->saved_windows = tem; | |
2892 | for (i = 0; i < n_windows; i++) | |
2893 | XVECTOR (tem)->contents[i] | |
2894 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 2895 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 JB |
2896 | XVECTOR (tem), 0); |
2897 | XSET (tem, Lisp_Window_Configuration, data); | |
2898 | return (tem); | |
2899 | } | |
2900 | ||
2901 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
2902 | 0, UNEVALLED, 0, | |
2903 | "Execute body, preserving window sizes and contents.\n\ | |
2904 | Restores which buffer appears in which window, where display starts,\n\ | |
2905 | as well as the current buffer.\n\ | |
2906 | Does not restore the value of point in current buffer.") | |
2907 | (args) | |
2908 | Lisp_Object args; | |
2909 | { | |
2910 | register Lisp_Object val; | |
2911 | register int count = specpdl_ptr - specpdl; | |
2912 | ||
2913 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 2914 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
2915 | val = Fprogn (args); |
2916 | return unbind_to (count, val); | |
2917 | } | |
2918 | \f | |
2919 | init_window_once () | |
2920 | { | |
44fa5b1e JB |
2921 | #ifdef MULTI_FRAME |
2922 | selected_frame = make_terminal_frame (); | |
2923 | minibuf_window = selected_frame->minibuffer_window; | |
2924 | selected_window = selected_frame->selected_window; | |
2925 | last_nonminibuf_frame = selected_frame; | |
2926 | #else /* not MULTI_FRAME */ | |
7ab12479 JB |
2927 | extern Lisp_Object get_minibuffer (); |
2928 | ||
95605e15 | 2929 | minibuf_window = make_window (); |
4b206065 | 2930 | FRAME_ROOT_WINDOW (selected_frame) = make_window (); |
7ab12479 | 2931 | |
44fa5b1e JB |
2932 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->next = minibuf_window; |
2933 | XWINDOW (minibuf_window)->prev = FRAME_ROOT_WINDOW (selected_frame); | |
4b206065 | 2934 | XWINDOW (minibuf_window)->mini_p = Qt; |
7ab12479 JB |
2935 | |
2936 | /* These values 9 and 10 are arbitrary, | |
2937 | just so that there is "something there." | |
2938 | Correct values are put in in init_xdisp */ | |
2939 | ||
44fa5b1e | 2940 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->width) = 10; |
7ab12479 JB |
2941 | XFASTINT (XWINDOW (minibuf_window)->width) = 10; |
2942 | ||
44fa5b1e | 2943 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->height) = 9; |
7ab12479 JB |
2944 | XFASTINT (XWINDOW (minibuf_window)->top) = 9; |
2945 | XFASTINT (XWINDOW (minibuf_window)->height) = 1; | |
2946 | ||
2947 | /* Prevent error in Fset_window_buffer. */ | |
44fa5b1e | 2948 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->buffer = Qt; |
7ab12479 JB |
2949 | XWINDOW (minibuf_window)->buffer = Qt; |
2950 | ||
2951 | /* Now set them up for real. */ | |
44fa5b1e | 2952 | Fset_window_buffer (FRAME_ROOT_WINDOW (selected_frame), |
e5d77022 | 2953 | Fcurrent_buffer ()); |
7ab12479 JB |
2954 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); |
2955 | ||
44fa5b1e | 2956 | selected_window = FRAME_ROOT_WINDOW (selected_frame); |
1d8d96fa JB |
2957 | /* Make sure this window seems more recently used than |
2958 | a newly-created, never-selected window. Increment | |
2959 | window_select_count so the first selection ever will get | |
2960 | something newer than this. */ | |
2961 | XFASTINT (XWINDOW (selected_window)->use_time) = ++window_select_count; | |
44fa5b1e | 2962 | #endif /* not MULTI_FRAME */ |
7ab12479 JB |
2963 | } |
2964 | ||
2965 | syms_of_window () | |
2966 | { | |
2967 | Qwindowp = intern ("windowp"); | |
2968 | staticpro (&Qwindowp); | |
2969 | ||
806b4d9b JB |
2970 | Qwindow_live_p = intern ("window-live-p"); |
2971 | staticpro (&Qwindow_live_p); | |
605be8af | 2972 | |
2f83aebe | 2973 | #ifndef MULTI_FRAME |
7ab12479 JB |
2974 | /* Make sure all windows get marked */ |
2975 | staticpro (&minibuf_window); | |
2f83aebe | 2976 | #endif |
7ab12479 JB |
2977 | |
2978 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
2979 | "Non-nil means call as function to display a help buffer.\n\ | |
2980 | Used by `with-output-to-temp-buffer'."); | |
2981 | Vtemp_buffer_show_function = Qnil; | |
2982 | ||
2983 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
2984 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
2985 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
2986 | that the currently selected window is not acceptable.\n\ | |
2987 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
2988 | work using this function."); | |
2989 | Vdisplay_buffer_function = Qnil; | |
2990 | ||
7ab12479 JB |
2991 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
2992 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
2993 | Vminibuf_scroll_window = Qnil; | |
2994 | ||
2995 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
2996 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
2997 | Vother_window_scroll_buffer = Qnil; | |
2998 | ||
44fa5b1e | 2999 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3000 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3001 | pop_up_frames = 0; |
7ab12479 | 3002 | |
44fa5b1e JB |
3003 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
3004 | "*If non-nil, function to call to handle automatic new frame creation.\n\ | |
3005 | It is called with no arguments and should return a newly created frame.\n\ | |
7ab12479 | 3006 | \n\ |
44fa5b1e JB |
3007 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3008 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3009 | Vpop_up_frame_function = Qnil; | |
7ab12479 JB |
3010 | |
3011 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, | |
3012 | "*Non-nil means display-buffer should make new windows."); | |
3013 | pop_up_windows = 1; | |
3014 | ||
3015 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3016 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3017 | next_screen_context_lines = 2; | |
3018 | ||
3019 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3020 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3021 | If there is only one window, it is split regardless of this value."); | |
3022 | split_height_threshold = 500; | |
3023 | ||
3024 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3025 | "*Delete any window less than this tall (including its mode line)."); | |
3026 | window_min_height = 4; | |
3027 | ||
3028 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3029 | "*Delete any window less than this wide."); | |
3030 | window_min_width = 10; | |
3031 | ||
3032 | defsubr (&Sselected_window); | |
3033 | defsubr (&Sminibuffer_window); | |
3034 | defsubr (&Swindow_minibuffer_p); | |
3035 | defsubr (&Swindowp); | |
806b4d9b | 3036 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3037 | defsubr (&Spos_visible_in_window_p); |
3038 | defsubr (&Swindow_buffer); | |
3039 | defsubr (&Swindow_height); | |
3040 | defsubr (&Swindow_width); | |
3041 | defsubr (&Swindow_hscroll); | |
3042 | defsubr (&Sset_window_hscroll); | |
3043 | defsubr (&Swindow_edges); | |
d5783c40 JB |
3044 | defsubr (&Scoordinates_in_window_p); |
3045 | defsubr (&Swindow_at); | |
7ab12479 JB |
3046 | defsubr (&Swindow_point); |
3047 | defsubr (&Swindow_start); | |
3048 | defsubr (&Swindow_end); | |
3049 | defsubr (&Sset_window_point); | |
3050 | defsubr (&Sset_window_start); | |
3051 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3052 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3053 | defsubr (&Swindow_display_table); |
3054 | defsubr (&Sset_window_display_table); | |
3055 | defsubr (&Snext_window); | |
3056 | defsubr (&Sprevious_window); | |
3057 | defsubr (&Sother_window); | |
3058 | defsubr (&Sget_lru_window); | |
3059 | defsubr (&Sget_largest_window); | |
3060 | defsubr (&Sget_buffer_window); | |
3061 | defsubr (&Sdelete_other_windows); | |
3062 | defsubr (&Sdelete_windows_on); | |
3063 | defsubr (&Sreplace_buffer_in_windows); | |
3064 | defsubr (&Sdelete_window); | |
3065 | defsubr (&Sset_window_buffer); | |
3066 | defsubr (&Sselect_window); | |
3067 | defsubr (&Sdisplay_buffer); | |
3068 | defsubr (&Ssplit_window); | |
3069 | defsubr (&Senlarge_window); | |
3070 | defsubr (&Sshrink_window); | |
3071 | defsubr (&Sscroll_up); | |
3072 | defsubr (&Sscroll_down); | |
3073 | defsubr (&Sscroll_left); | |
3074 | defsubr (&Sscroll_right); | |
3075 | defsubr (&Sscroll_other_window); | |
3076 | defsubr (&Srecenter); | |
3077 | defsubr (&Smove_to_window_line); | |
3078 | defsubr (&Swindow_configuration_p); | |
3079 | defsubr (&Sset_window_configuration); | |
3080 | defsubr (&Scurrent_window_configuration); | |
3081 | defsubr (&Ssave_window_excursion); | |
3082 | } | |
3083 | ||
3084 | keys_of_window () | |
3085 | { | |
3086 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3087 | initial_define_key (control_x_map, '2', "split-window"); | |
3088 | initial_define_key (control_x_map, '0', "delete-window"); | |
3089 | initial_define_key (control_x_map, 'o', "other-window"); | |
3090 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3091 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3092 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3093 | ||
3094 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3095 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3096 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3097 | ||
3098 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3099 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3100 | } |