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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
f8c25f1b | 3 | Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc. |
7ab12479 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1113d9db | 9 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
18160b98 | 21 | #include <config.h> |
7ab12479 JB |
22 | #include "lisp.h" |
23 | #include "buffer.h" | |
44fa5b1e | 24 | #include "frame.h" |
7ab12479 JB |
25 | #include "window.h" |
26 | #include "commands.h" | |
27 | #include "indent.h" | |
28 | #include "termchar.h" | |
29 | #include "disptab.h" | |
f8026fd8 | 30 | #include "keyboard.h" |
7ab12479 | 31 | |
806b4d9b | 32 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 JB |
33 | |
34 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
35 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
36 | ||
fd482be5 | 37 | void delete_all_subwindows (); |
7ab12479 JB |
38 | static struct window *decode_window(); |
39 | ||
40 | /* This is the window in which the terminal's cursor should | |
41 | be left when nothing is being done with it. This must | |
42 | always be a leaf window, and its buffer is selected by | |
43 | the top level editing loop at the end of each command. | |
44 | ||
45 | This value is always the same as | |
44fa5b1e | 46 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
47 | |
48 | Lisp_Object selected_window; | |
49 | ||
44fa5b1e | 50 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
51 | Note that you cannot test for minibufferness of an arbitrary window |
52 | by comparing against this; but you can test for minibufferness of | |
53 | the selected window. */ | |
54 | Lisp_Object minibuf_window; | |
55 | ||
56 | /* Non-nil means it is the window for C-M-v to scroll | |
57 | when the minibuffer is selected. */ | |
58 | Lisp_Object Vminibuf_scroll_window; | |
59 | ||
60 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
61 | Lisp_Object Vother_window_scroll_buffer; | |
62 | ||
7ab12479 JB |
63 | /* Non-nil means it's function to call to display temp buffers. */ |
64 | Lisp_Object Vtemp_buffer_show_function; | |
65 | ||
66 | /* If a window gets smaller than either of these, it is removed. */ | |
67 | int window_min_height; | |
68 | int window_min_width; | |
69 | ||
70 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
71 | int pop_up_windows; | |
72 | ||
44fa5b1e JB |
73 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
74 | int pop_up_frames; | |
7ab12479 JB |
75 | |
76 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 77 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
78 | |
79 | /* Function to call to handle Fdisplay_buffer. */ | |
80 | Lisp_Object Vdisplay_buffer_function; | |
81 | ||
a90712c2 RS |
82 | /* List of buffer *names* for buffers that should have their own frames. */ |
83 | Lisp_Object Vspecial_display_buffer_names; | |
84 | ||
85 | /* List of regexps for buffer names that should have their own frames. */ | |
86 | Lisp_Object Vspecial_display_regexps; | |
87 | ||
88 | /* Function to pop up a special frame. */ | |
89 | Lisp_Object Vspecial_display_function; | |
90 | ||
855d8627 RS |
91 | /* List of buffer *names* for buffers to appear in selected window. */ |
92 | Lisp_Object Vsame_window_buffer_names; | |
93 | ||
94 | /* List of regexps for buffer names to appear in selected window. */ | |
95 | Lisp_Object Vsame_window_regexps; | |
96 | ||
a58ec57d RS |
97 | /* Hook run at end of temp_output_buffer_show. */ |
98 | Lisp_Object Qtemp_buffer_show_hook; | |
99 | ||
7ab12479 JB |
100 | /* Fdisplay_buffer always splits the largest window |
101 | if that window is more than this high. */ | |
102 | int split_height_threshold; | |
103 | ||
104 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
105 | int next_screen_context_lines; | |
106 | ||
107 | /* Incremented for each window created. */ | |
108 | static int sequence_number; | |
109 | ||
110 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
111 | \f | |
112 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
113 | "Returns t if OBJ is a window.") | |
114 | (obj) | |
115 | Lisp_Object obj; | |
116 | { | |
017b2bad | 117 | return WINDOWP (obj) ? Qt : Qnil; |
7ab12479 JB |
118 | } |
119 | ||
806b4d9b | 120 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
605be8af JB |
121 | "Returns t if OBJ is a window which is currently visible.") |
122 | (obj) | |
123 | Lisp_Object obj; | |
124 | { | |
017b2bad | 125 | return (WINDOWP (obj) && ! NILP (XWINDOW (obj)->buffer) ? Qt : Qnil); |
605be8af JB |
126 | } |
127 | ||
7ab12479 JB |
128 | Lisp_Object |
129 | make_window () | |
130 | { | |
cffec418 | 131 | Lisp_Object val; |
7ab12479 | 132 | register struct window *p; |
cffec418 KH |
133 | register struct Lisp_Vector *vec; |
134 | int i; | |
135 | ||
136 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
137 | for (i = 0; i < VECSIZE (struct window); i++) | |
138 | vec->contents[i] = Qnil; | |
139 | vec->size = VECSIZE (struct window); | |
140 | p = (struct window *)vec; | |
d834a2e9 KH |
141 | XSETFASTINT (p->sequence_number, ++sequence_number); |
142 | XSETFASTINT (p->left, 0); | |
143 | XSETFASTINT (p->top, 0); | |
144 | XSETFASTINT (p->height, 0); | |
145 | XSETFASTINT (p->width, 0); | |
146 | XSETFASTINT (p->hscroll, 0); | |
147 | XSETFASTINT (p->last_point_x, 0); | |
148 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
149 | p->start = Fmake_marker (); |
150 | p->pointm = Fmake_marker (); | |
d834a2e9 | 151 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 152 | p->frame = Qnil; |
7ab12479 JB |
153 | p->display_table = Qnil; |
154 | p->dedicated = Qnil; | |
cffec418 | 155 | XSETWINDOW (val, p); |
7ab12479 JB |
156 | return val; |
157 | } | |
158 | ||
159 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
160 | "Return the window that the cursor now appears in and commands apply to.") | |
161 | () | |
162 | { | |
163 | return selected_window; | |
164 | } | |
165 | ||
83762ba4 JB |
166 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
167 | "Return the window used now for minibuffers.\n\ | |
168 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
169 | used by that frame.") | |
170 | (frame) | |
171 | Lisp_Object frame; | |
7ab12479 | 172 | { |
44fa5b1e | 173 | #ifdef MULTI_FRAME |
83762ba4 | 174 | if (NILP (frame)) |
74112613 | 175 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
176 | else |
177 | CHECK_LIVE_FRAME (frame, 0); | |
178 | #endif | |
179 | ||
180 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
181 | } |
182 | ||
605be8af | 183 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
184 | "Returns non-nil if WINDOW is a minibuffer window.") |
185 | (window) | |
186 | Lisp_Object window; | |
187 | { | |
188 | struct window *w = decode_window (window); | |
189 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
190 | } | |
191 | ||
192 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
193 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 194 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
195 | Returns nil if that position is scrolled vertically out of view.\n\ |
196 | POS defaults to point; WINDOW, to the selected window.") | |
197 | (pos, window) | |
198 | Lisp_Object pos, window; | |
199 | { | |
200 | register struct window *w; | |
201 | register int top; | |
202 | register int height; | |
203 | register int posint; | |
204 | register struct buffer *buf; | |
205 | struct position posval; | |
afdb2485 | 206 | int hscroll; |
7ab12479 | 207 | |
265a9e55 | 208 | if (NILP (pos)) |
5ce7b543 | 209 | posint = PT; |
7ab12479 JB |
210 | else |
211 | { | |
212 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
213 | posint = XINT (pos); | |
214 | } | |
215 | ||
605be8af | 216 | w = decode_window (window); |
7ab12479 | 217 | top = marker_position (w->start); |
afdb2485 | 218 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
219 | |
220 | if (posint < top) | |
221 | return Qnil; | |
222 | ||
223 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
224 | ||
225 | buf = XBUFFER (w->buffer); | |
226 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
227 | { | |
44fa5b1e | 228 | /* If frame is up to date, |
7ab12479 JB |
229 | use the info recorded about how much text fit on it. */ |
230 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
231 | || (XFASTINT (w->window_end_vpos) < height)) | |
232 | return Qt; | |
233 | return Qnil; | |
234 | } | |
235 | else | |
236 | { | |
33eb4ede | 237 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
238 | return Qnil; |
239 | ||
61b5322b RS |
240 | /* w->start can be out of range. If it is, do something reasonable. */ |
241 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
242 | return Qnil; | |
243 | ||
7ab12479 | 244 | /* If that info is not correct, calculate afresh */ |
4efffd80 | 245 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0, |
afdb2485 | 246 | posint, height, 0, |
535e0b8e | 247 | window_internal_width (w) - 1, |
e37f06d7 | 248 | hscroll, 0, w); |
7ab12479 JB |
249 | |
250 | return posval.vpos < height ? Qt : Qnil; | |
251 | } | |
252 | } | |
253 | \f | |
254 | static struct window * | |
255 | decode_window (window) | |
256 | register Lisp_Object window; | |
257 | { | |
265a9e55 | 258 | if (NILP (window)) |
7ab12479 JB |
259 | return XWINDOW (selected_window); |
260 | ||
605be8af | 261 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
262 | return XWINDOW (window); |
263 | } | |
264 | ||
265 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
266 | "Return the buffer that WINDOW is displaying.") | |
267 | (window) | |
268 | Lisp_Object window; | |
269 | { | |
270 | return decode_window (window)->buffer; | |
271 | } | |
272 | ||
273 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
274 | "Return the number of lines in WINDOW (including its mode line).") | |
275 | (window) | |
276 | Lisp_Object window; | |
277 | { | |
278 | return decode_window (window)->height; | |
279 | } | |
280 | ||
281 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
282 | "Return the number of display columns in WINDOW.\n\ |
283 | This is the width that is usable columns available for text in WINDOW.\n\ | |
284 | If you want to find out how many columns WINDOW takes up,\n\ | |
285 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
286 | (window) |
287 | Lisp_Object window; | |
288 | { | |
ee61d94e | 289 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
290 | } |
291 | ||
292 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
293 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
294 | (window) | |
295 | Lisp_Object window; | |
296 | { | |
297 | return decode_window (window)->hscroll; | |
298 | } | |
299 | ||
300 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
301 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
302 | NCOL should be zero or positive.") | |
303 | (window, ncol) | |
304 | register Lisp_Object window, ncol; | |
305 | { | |
306 | register struct window *w; | |
307 | ||
308 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 309 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 JB |
310 | if (XFASTINT (ncol) >= (1 << (SHORTBITS - 1))) |
311 | args_out_of_range (ncol, Qnil); | |
312 | w = decode_window (window); | |
7f4161e0 | 313 | if (XINT (w->hscroll) != XINT (ncol)) |
1479ef51 | 314 | XBUFFER (w->buffer)->clip_changed = 1; /* Prevent redisplay shortcuts */ |
7ab12479 JB |
315 | w->hscroll = ncol; |
316 | return ncol; | |
317 | } | |
318 | ||
319 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, | |
320 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 321 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
322 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
323 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
324 | and its mode-line.") | |
325 | (window) | |
326 | Lisp_Object window; | |
327 | { | |
328 | register struct window *w = decode_window (window); | |
329 | ||
330 | return Fcons (w->left, Fcons (w->top, | |
331 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
332 | Fcons (make_number (XFASTINT (w->top) | |
333 | + XFASTINT (w->height)), | |
334 | Qnil)))); | |
335 | } | |
336 | ||
d5783c40 JB |
337 | /* Test if the character at column *x, row *y is within window *w. |
338 | If it is not, return 0; | |
339 | if it is in the window's text area, | |
340 | set *x and *y to its location relative to the upper left corner | |
341 | of the window, and | |
342 | return 1; | |
343 | if it is on the window's modeline, return 2; | |
344 | if it is on the border between the window and its right sibling, | |
345 | return 3. */ | |
346 | static int | |
347 | coordinates_in_window (w, x, y) | |
348 | register struct window *w; | |
349 | register int *x, *y; | |
350 | { | |
351 | register int left = XINT (w->left); | |
352 | register int width = XINT (w->width); | |
353 | register int window_height = XINT (w->height); | |
354 | register int top = XFASTINT (w->top); | |
355 | ||
356 | if ( *x < left || *x >= left + width | |
357 | || *y < top || *y >= top + window_height) | |
358 | return 0; | |
359 | ||
360 | /* Is the character is the mode line? */ | |
361 | if (*y == top + window_height - 1 | |
05c2896a | 362 | && ! MINI_WINDOW_P (w)) |
d5783c40 JB |
363 | return 2; |
364 | ||
365 | /* Is the character in the right border? */ | |
366 | if (*x == left + width - 1 | |
44fa5b1e | 367 | && left + width != FRAME_WIDTH (XFRAME (w->frame))) |
d5783c40 JB |
368 | return 3; |
369 | ||
370 | *x -= left; | |
371 | *y -= top; | |
372 | return 1; | |
373 | } | |
374 | ||
375 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
376 | Scoordinates_in_window_p, 2, 2, 0, | |
377 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 378 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 379 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 380 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 381 | frame.\n\ |
d5783c40 JB |
382 | If COORDINATES are in the text portion of WINDOW,\n\ |
383 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 384 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 385 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 386 | `vertical-line' is returned.") |
d5783c40 JB |
387 | (coordinates, window) |
388 | register Lisp_Object coordinates, window; | |
389 | { | |
390 | int x, y; | |
391 | ||
605be8af | 392 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
393 | CHECK_CONS (coordinates, 1); |
394 | x = XINT (Fcar (coordinates)); | |
395 | y = XINT (Fcdr (coordinates)); | |
396 | ||
397 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
398 | { | |
399 | case 0: /* NOT in window at all. */ | |
400 | return Qnil; | |
401 | ||
402 | case 1: /* In text part of window. */ | |
403 | return Fcons (x, y); | |
404 | ||
405 | case 2: /* In mode line of window. */ | |
406 | return Qmode_line; | |
407 | ||
408 | case 3: /* On right border of window. */ | |
e5d77022 | 409 | return Qvertical_line; |
d5783c40 JB |
410 | |
411 | default: | |
412 | abort (); | |
413 | } | |
414 | } | |
415 | ||
7ab12479 | 416 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
417 | Lisp_Object. If x, y is on the window's modeline, set *part |
418 | to 1; if it is on the separating line between the window and its | |
419 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
420 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 421 | Lisp_Object |
44fa5b1e JB |
422 | window_from_coordinates (frame, x, y, part) |
423 | FRAME_PTR frame; | |
7ab12479 | 424 | int x, y; |
d5783c40 | 425 | int *part; |
7ab12479 JB |
426 | { |
427 | register Lisp_Object tem, first; | |
428 | ||
44fa5b1e | 429 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 430 | |
d5783c40 | 431 | do |
7ab12479 JB |
432 | { |
433 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
434 | ||
435 | if (found) | |
436 | { | |
d5783c40 | 437 | *part = found - 1; |
7ab12479 JB |
438 | return tem; |
439 | } | |
440 | ||
d5783c40 | 441 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 442 | } |
d5783c40 JB |
443 | while (! EQ (tem, first)); |
444 | ||
445 | return Qnil; | |
7ab12479 JB |
446 | } |
447 | ||
ab17c3f2 | 448 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 449 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
450 | If omitted, FRAME defaults to the currently selected frame.\n\ |
451 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 452 | column 0.") |
b0c33a94 RS |
453 | (x, y, frame) |
454 | Lisp_Object x, y, frame; | |
7ab12479 JB |
455 | { |
456 | int part; | |
457 | ||
4b206065 | 458 | #ifdef MULTI_FRAME |
44fa5b1e | 459 | if (NILP (frame)) |
74112613 | 460 | XSETFRAME (frame, selected_frame); |
d5783c40 | 461 | else |
44fa5b1e | 462 | CHECK_LIVE_FRAME (frame, 2); |
4b206065 | 463 | #endif |
b0c33a94 RS |
464 | CHECK_NUMBER (x, 0); |
465 | CHECK_NUMBER (y, 1); | |
7ab12479 | 466 | |
44fa5b1e | 467 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 468 | XINT (x), XINT (y), |
7ab12479 JB |
469 | &part); |
470 | } | |
471 | ||
472 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
473 | "Return current value of point in WINDOW.\n\ | |
474 | For a nonselected window, this is the value point would have\n\ | |
475 | if that window were selected.\n\ | |
476 | \n\ | |
477 | Note that, when WINDOW is the selected window and its buffer\n\ | |
478 | is also currently selected, the value returned is the same as (point).\n\ | |
479 | It would be more strictly correct to return the `top-level' value\n\ | |
480 | of point, outside of any save-excursion forms.\n\ | |
481 | But that is hard to define.") | |
482 | (window) | |
483 | Lisp_Object window; | |
484 | { | |
485 | register struct window *w = decode_window (window); | |
486 | ||
487 | if (w == XWINDOW (selected_window) | |
488 | && current_buffer == XBUFFER (w->buffer)) | |
489 | return Fpoint (); | |
490 | return Fmarker_position (w->pointm); | |
491 | } | |
492 | ||
493 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
494 | "Return position at which display currently starts in WINDOW.\n\ |
495 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
496 | (window) |
497 | Lisp_Object window; | |
498 | { | |
499 | return Fmarker_position (decode_window (window)->start); | |
500 | } | |
501 | ||
8646118f RS |
502 | /* This is text temporarily removed from the doc string below. |
503 | ||
7250968e RS |
504 | This function returns nil if the position is not currently known.\n\ |
505 | That happens when redisplay is preempted and doesn't finish.\n\ | |
506 | If in that case you want to compute where the end of the window would\n\ | |
507 | have been if redisplay had finished, do this:\n\ | |
508 | (save-excursion\n\ | |
509 | (goto-char (window-start window))\n\ | |
510 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
511 | (point))") */ |
512 | ||
513 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
514 | "Return position at which display currently ends in WINDOW.\n\ | |
515 | This is updated by redisplay, when it runs to completion.\n\ | |
516 | Simply changing the buffer text or setting `window-start'\n\ | |
517 | does not update this value.") | |
7ab12479 JB |
518 | (window) |
519 | Lisp_Object window; | |
520 | { | |
521 | Lisp_Object value; | |
522 | struct window *w = decode_window (window); | |
5a41ab94 RS |
523 | Lisp_Object buf; |
524 | ||
525 | buf = w->buffer; | |
526 | CHECK_BUFFER (buf, 0); | |
527 | ||
8646118f | 528 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
529 | /* If we don't know the end position, return nil. |
530 | The user can compute it with vertical-motion if he wants to. | |
531 | It would be nicer to do it automatically, | |
532 | but that's so slow that it would probably bother people. */ | |
533 | if (NILP (w->window_end_valid)) | |
534 | return Qnil; | |
8646118f | 535 | #endif |
7250968e | 536 | |
74112613 KH |
537 | XSETINT (value, |
538 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
539 | |
540 | return value; | |
541 | } | |
542 | ||
543 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
544 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
545 | (window, pos) | |
546 | Lisp_Object window, pos; | |
547 | { | |
548 | register struct window *w = decode_window (window); | |
549 | ||
550 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
551 | if (w == XWINDOW (selected_window)) | |
552 | Fgoto_char (pos); | |
553 | else | |
554 | set_marker_restricted (w->pointm, pos, w->buffer); | |
555 | ||
556 | return pos; | |
557 | } | |
558 | ||
559 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
560 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
561 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
562 | from overriding motion of point in order to display at this exact start.") | |
563 | (window, pos, noforce) | |
564 | Lisp_Object window, pos, noforce; | |
565 | { | |
566 | register struct window *w = decode_window (window); | |
567 | ||
568 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
569 | set_marker_restricted (w->start, pos, w->buffer); | |
570 | /* this is not right, but much easier than doing what is right. */ | |
571 | w->start_at_line_beg = Qnil; | |
265a9e55 | 572 | if (NILP (noforce)) |
7ab12479 JB |
573 | w->force_start = Qt; |
574 | w->update_mode_line = Qt; | |
d834a2e9 | 575 | XSETFASTINT (w->last_modified, 0); |
62c07cc7 JB |
576 | if (!EQ (window, selected_window)) |
577 | windows_or_buffers_changed++; | |
7ab12479 JB |
578 | return pos; |
579 | } | |
580 | ||
581 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
582 | 1, 1, 0, | |
583 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 584 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
585 | (window) |
586 | Lisp_Object window; | |
587 | { | |
588 | return decode_window (window)->dedicated; | |
589 | } | |
590 | ||
d207b766 RS |
591 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
592 | Sset_window_dedicated_p, 2, 2, 0, | |
593 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
594 | If it is dedicated, Emacs will not automatically change\n\ | |
595 | which buffer appears in it.\n\ | |
596 | The second argument is the new value for the dedication flag;\n\ | |
597 | non-nil means yes.") | |
7ab12479 JB |
598 | (window, arg) |
599 | Lisp_Object window, arg; | |
600 | { | |
601 | register struct window *w = decode_window (window); | |
602 | ||
265a9e55 | 603 | if (NILP (arg)) |
7ab12479 JB |
604 | w->dedicated = Qnil; |
605 | else | |
d207b766 | 606 | w->dedicated = Qt; |
7ab12479 JB |
607 | |
608 | return w->dedicated; | |
609 | } | |
610 | ||
611 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
612 | 0, 1, 0, | |
613 | "Return the display-table that WINDOW is using.") | |
614 | (window) | |
615 | Lisp_Object window; | |
616 | { | |
617 | return decode_window (window)->display_table; | |
618 | } | |
619 | ||
620 | /* Get the display table for use currently on window W. | |
621 | This is either W's display table or W's buffer's display table. | |
622 | Ignore the specified tables if they are not valid; | |
623 | if no valid table is specified, return 0. */ | |
624 | ||
625 | struct Lisp_Vector * | |
626 | window_display_table (w) | |
627 | struct window *w; | |
628 | { | |
629 | Lisp_Object tem; | |
630 | tem = w->display_table; | |
017b2bad | 631 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
632 | return XVECTOR (tem); |
633 | tem = XBUFFER (w->buffer)->display_table; | |
017b2bad | 634 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
635 | return XVECTOR (tem); |
636 | tem = Vstandard_display_table; | |
017b2bad | 637 | if (VECTORP (tem) && XVECTOR (tem)->size == DISP_TABLE_SIZE) |
7ab12479 JB |
638 | return XVECTOR (tem); |
639 | return 0; | |
640 | } | |
641 | ||
3a2712f9 | 642 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
643 | "Set WINDOW's display-table to TABLE.") |
644 | (window, table) | |
645 | register Lisp_Object window, table; | |
646 | { | |
647 | register struct window *w; | |
648 | register Lisp_Object z; /* Return value. */ | |
649 | ||
650 | w = decode_window (window); | |
651 | w->display_table = table; | |
652 | return table; | |
653 | } | |
654 | \f | |
655 | /* Record info on buffer window w is displaying | |
656 | when it is about to cease to display that buffer. */ | |
657 | static | |
658 | unshow_buffer (w) | |
659 | register struct window *w; | |
660 | { | |
12cae7c0 | 661 | Lisp_Object buf; |
7ab12479 | 662 | |
12cae7c0 | 663 | buf = w->buffer; |
7ab12479 JB |
664 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) |
665 | abort (); | |
666 | ||
573f41ab | 667 | #if 0 |
7ab12479 JB |
668 | if (w == XWINDOW (selected_window) |
669 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
670 | /* Do this except when the selected window's buffer | |
671 | is being removed from some other window. */ | |
573f41ab RS |
672 | #endif |
673 | /* last_window_start records the start position that this buffer | |
674 | had in the last window to be disconnected from it. | |
675 | Now that this statement is unconditional, | |
676 | it is possible for the buffer to be displayed in the | |
677 | selected window, while last_window_start reflects another | |
678 | window which was recently showing the same buffer. | |
679 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
680 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
681 | ||
682 | /* Point in the selected window's buffer | |
683 | is actually stored in that buffer, and the window's pointm isn't used. | |
684 | So don't clobber point in that buffer. */ | |
685 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
686 | BUF_PT (XBUFFER (buf)) | |
687 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
688 | marker_position (w->pointm), | |
689 | BUF_ZV (XBUFFER (buf))); | |
690 | } | |
691 | ||
692 | /* Put replacement into the window structure in place of old. */ | |
693 | static | |
694 | replace_window (old, replacement) | |
695 | Lisp_Object old, replacement; | |
696 | { | |
697 | register Lisp_Object tem; | |
698 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
699 | ||
44fa5b1e JB |
700 | /* If OLD is its frame's root_window, then replacement is the new |
701 | root_window for that frame. */ | |
7ab12479 | 702 | |
7f4161e0 | 703 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 704 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
705 | |
706 | p->left = o->left; | |
707 | p->top = o->top; | |
708 | p->width = o->width; | |
709 | p->height = o->height; | |
710 | ||
711 | p->next = tem = o->next; | |
265a9e55 | 712 | if (!NILP (tem)) |
7ab12479 JB |
713 | XWINDOW (tem)->prev = replacement; |
714 | ||
715 | p->prev = tem = o->prev; | |
265a9e55 | 716 | if (!NILP (tem)) |
7ab12479 JB |
717 | XWINDOW (tem)->next = replacement; |
718 | ||
719 | p->parent = tem = o->parent; | |
265a9e55 | 720 | if (!NILP (tem)) |
7ab12479 JB |
721 | { |
722 | if (EQ (XWINDOW (tem)->vchild, old)) | |
723 | XWINDOW (tem)->vchild = replacement; | |
724 | if (EQ (XWINDOW (tem)->hchild, old)) | |
725 | XWINDOW (tem)->hchild = replacement; | |
726 | } | |
727 | ||
728 | /*** Here, if replacement is a vertical combination | |
729 | and so is its new parent, we should make replacement's | |
730 | children be children of that parent instead. ***/ | |
731 | } | |
732 | ||
733 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
734 | "Remove WINDOW from the display. Default is selected window.") | |
735 | (window) | |
736 | register Lisp_Object window; | |
737 | { | |
738 | register Lisp_Object tem, parent, sib; | |
739 | register struct window *p; | |
740 | register struct window *par; | |
741 | ||
605be8af JB |
742 | /* Because this function is called by other C code on non-leaf |
743 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
744 | so we can't decode_window here. */ | |
265a9e55 | 745 | if (NILP (window)) |
7ab12479 JB |
746 | window = selected_window; |
747 | else | |
748 | CHECK_WINDOW (window, 0); | |
7ab12479 | 749 | p = XWINDOW (window); |
605be8af JB |
750 | |
751 | /* It's okay to delete an already-deleted window. */ | |
752 | if (NILP (p->buffer) | |
753 | && NILP (p->hchild) | |
754 | && NILP (p->vchild)) | |
755 | return Qnil; | |
756 | ||
7ab12479 | 757 | parent = p->parent; |
265a9e55 | 758 | if (NILP (parent)) |
7ab12479 JB |
759 | error ("Attempt to delete minibuffer or sole ordinary window"); |
760 | par = XWINDOW (parent); | |
761 | ||
762 | windows_or_buffers_changed++; | |
29aeee73 | 763 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; |
7ab12479 | 764 | |
605be8af JB |
765 | /* Are we trying to delete any frame's selected window? */ |
766 | { | |
0def0403 | 767 | Lisp_Object frame, pwindow; |
605be8af | 768 | |
0def0403 RS |
769 | /* See if the frame's selected window is either WINDOW |
770 | or any subwindow of it, by finding all that window's parents | |
771 | and comparing each one with WINDOW. */ | |
772 | frame = WINDOW_FRAME (XWINDOW (window)); | |
773 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
774 | ||
775 | while (!NILP (pwindow)) | |
776 | { | |
777 | if (EQ (window, pwindow)) | |
778 | break; | |
779 | pwindow = XWINDOW (pwindow)->parent; | |
780 | } | |
781 | ||
782 | if (EQ (window, pwindow)) | |
605be8af | 783 | { |
89bca612 RS |
784 | Lisp_Object alternative; |
785 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
786 | |
787 | /* If we're about to delete the selected window on the | |
788 | selected frame, then we should use Fselect_window to select | |
789 | the new window. On the other hand, if we're about to | |
790 | delete the selected window on any other frame, we shouldn't do | |
791 | anything but set the frame's selected_window slot. */ | |
792 | if (EQ (window, selected_window)) | |
793 | Fselect_window (alternative); | |
794 | else | |
0def0403 | 795 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
796 | } |
797 | } | |
7ab12479 JB |
798 | |
799 | tem = p->buffer; | |
800 | /* tem is null for dummy parent windows | |
801 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 802 | if (!NILP (tem)) |
7ab12479 JB |
803 | { |
804 | unshow_buffer (p); | |
805 | unchain_marker (p->pointm); | |
806 | unchain_marker (p->start); | |
7ab12479 JB |
807 | } |
808 | ||
809 | tem = p->next; | |
265a9e55 | 810 | if (!NILP (tem)) |
7ab12479 JB |
811 | XWINDOW (tem)->prev = p->prev; |
812 | ||
813 | tem = p->prev; | |
265a9e55 | 814 | if (!NILP (tem)) |
7ab12479 JB |
815 | XWINDOW (tem)->next = p->next; |
816 | ||
817 | if (EQ (window, par->hchild)) | |
818 | par->hchild = p->next; | |
819 | if (EQ (window, par->vchild)) | |
820 | par->vchild = p->next; | |
821 | ||
822 | /* Find one of our siblings to give our space to. */ | |
823 | sib = p->prev; | |
265a9e55 | 824 | if (NILP (sib)) |
7ab12479 JB |
825 | { |
826 | /* If p gives its space to its next sibling, that sibling needs | |
827 | to have its top/left side pulled back to where p's is. | |
828 | set_window_{height,width} will re-position the sibling's | |
829 | children. */ | |
830 | sib = p->next; | |
7f4161e0 JB |
831 | XWINDOW (sib)->top = p->top; |
832 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
833 | } |
834 | ||
835 | /* Stretch that sibling. */ | |
265a9e55 | 836 | if (!NILP (par->vchild)) |
7ab12479 JB |
837 | set_window_height (sib, |
838 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
839 | 1); | |
265a9e55 | 840 | if (!NILP (par->hchild)) |
7ab12479 JB |
841 | set_window_width (sib, |
842 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
843 | 1); | |
844 | ||
845 | /* If parent now has only one child, | |
846 | put the child into the parent's place. */ | |
7ab12479 | 847 | tem = par->hchild; |
265a9e55 | 848 | if (NILP (tem)) |
7ab12479 | 849 | tem = par->vchild; |
265a9e55 | 850 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 851 | replace_window (parent, tem); |
605be8af JB |
852 | |
853 | /* Since we may be deleting combination windows, we must make sure that | |
854 | not only p but all its children have been marked as deleted. */ | |
855 | if (! NILP (p->hchild)) | |
856 | delete_all_subwindows (XWINDOW (p->hchild)); | |
857 | else if (! NILP (p->vchild)) | |
858 | delete_all_subwindows (XWINDOW (p->vchild)); | |
859 | ||
860 | /* Mark this window as deleted. */ | |
861 | p->buffer = p->hchild = p->vchild = Qnil; | |
862 | ||
7ab12479 JB |
863 | return Qnil; |
864 | } | |
865 | \f | |
7ab12479 | 866 | |
44fa5b1e | 867 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 868 | |
26f6279d JB |
869 | /* This comment supplies the doc string for `next-window', |
870 | for make-docfile to see. We cannot put this in the real DEFUN | |
871 | due to limits in the Unix cpp. | |
872 | ||
873 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 874 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
875 | If omitted, WINDOW defaults to the selected window.\n\ |
876 | \n\ | |
877 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
878 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
879 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
880 | minibuffer even if it is active.\n\ | |
881 | \n\ | |
44fa5b1e JB |
882 | Several frames may share a single minibuffer; if the minibuffer\n\ |
883 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 884 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
885 | set of windows even when the minibuffer is on another frame. If the\n\ |
886 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 887 | \n\ |
44fa5b1e JB |
888 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
889 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 890 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 891 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 892 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 893 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
894 | \n\ |
895 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
896 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
897 | windows, eventually ending up back at the window you started with.\n\ | |
898 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
899 | (window, minibuf, all_frames) */ |
900 | ||
901 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
902 | 0) | |
44fa5b1e JB |
903 | (window, minibuf, all_frames) |
904 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
905 | { |
906 | register Lisp_Object tem; | |
d5783c40 | 907 | Lisp_Object start_window; |
7ab12479 | 908 | |
265a9e55 | 909 | if (NILP (window)) |
7ab12479 JB |
910 | window = selected_window; |
911 | else | |
605be8af | 912 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 913 | |
d5783c40 JB |
914 | start_window = window; |
915 | ||
916 | /* minibuf == nil may or may not include minibuffers. | |
917 | Decide if it does. */ | |
265a9e55 | 918 | if (NILP (minibuf)) |
fbdc1545 RS |
919 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
920 | else if (! EQ (minibuf, Qt)) | |
921 | minibuf = Qlambda; | |
922 | /* Now minibuf can be t => count all minibuffer windows, | |
923 | lambda => count none of them, | |
924 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 925 | |
c6e73093 | 926 | #ifdef MULTI_FRAME |
1bb80f72 | 927 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e | 928 | if (NILP (all_frames)) |
fbdc1545 | 929 | all_frames = (! EQ (minibuf, Qlambda) |
1bb80f72 RS |
930 | ? (FRAME_MINIBUF_WINDOW |
931 | (XFRAME | |
932 | (WINDOW_FRAME | |
933 | (XWINDOW (window))))) | |
934 | : Qnil); | |
89bca612 RS |
935 | else if (EQ (all_frames, Qvisible)) |
936 | ; | |
f812f9c6 RS |
937 | else if (XFASTINT (all_frames) == 0) |
938 | ; | |
1f4c5d09 RS |
939 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
940 | /* If all_frames is a frame and window arg isn't on that frame, just | |
941 | return the first window on the frame. */ | |
942 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
943 | else if (! EQ (all_frames, Qt)) |
944 | all_frames = Qnil; | |
644b477c RS |
945 | /* Now all_frames is t meaning search all frames, |
946 | nil meaning search just current frame, | |
f812f9c6 RS |
947 | visible meaning search just visible frames, |
948 | 0 meaning search visible and iconified frames, | |
644b477c | 949 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 950 | #endif |
7ab12479 JB |
951 | |
952 | /* Do this loop at least once, to get the next window, and perhaps | |
953 | again, if we hit the minibuffer and that is not acceptable. */ | |
954 | do | |
955 | { | |
956 | /* Find a window that actually has a next one. This loop | |
957 | climbs up the tree. */ | |
265a9e55 JB |
958 | while (tem = XWINDOW (window)->next, NILP (tem)) |
959 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 960 | window = tem; |
d5783c40 | 961 | else |
7ab12479 | 962 | { |
44fa5b1e JB |
963 | /* We've reached the end of this frame. |
964 | Which other frames are acceptable? */ | |
965 | tem = WINDOW_FRAME (XWINDOW (window)); | |
966 | #ifdef MULTI_FRAME | |
967 | if (! NILP (all_frames)) | |
1bb80f72 RS |
968 | { |
969 | Lisp_Object tem1; | |
970 | ||
971 | tem1 = tem; | |
972 | tem = next_frame (tem, all_frames); | |
973 | /* In the case where the minibuffer is active, | |
974 | and we include its frame as well as the selected one, | |
975 | next_frame may get stuck in that frame. | |
976 | If that happens, go back to the selected frame | |
977 | so we can complete the cycle. */ | |
978 | if (EQ (tem, tem1)) | |
74112613 | 979 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 980 | } |
7ab12479 | 981 | #endif |
44fa5b1e | 982 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 983 | |
7ab12479 JB |
984 | break; |
985 | } | |
986 | ||
987 | window = tem; | |
d5783c40 | 988 | |
7ab12479 JB |
989 | /* If we're in a combination window, find its first child and |
990 | recurse on that. Otherwise, we've found the window we want. */ | |
991 | while (1) | |
992 | { | |
265a9e55 | 993 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 994 | window = XWINDOW (window)->hchild; |
265a9e55 | 995 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
996 | window = XWINDOW (window)->vchild; |
997 | else break; | |
998 | } | |
999 | } | |
d5783c40 JB |
1000 | /* Which windows are acceptible? |
1001 | Exit the loop and accept this window if | |
fbdc1545 RS |
1002 | this isn't a minibuffer window, |
1003 | or we're accepting all minibuffer windows, | |
1004 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1005 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1006 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1007 | && ! EQ (minibuf, Qt) |
fbdc1545 | 1008 | && ! EQ (minibuf, window) |
7f4161e0 | 1009 | && ! EQ (window, start_window)); |
7ab12479 JB |
1010 | |
1011 | return window; | |
1012 | } | |
1013 | ||
26f6279d JB |
1014 | /* This comment supplies the doc string for `previous-window', |
1015 | for make-docfile to see. We cannot put this in the real DEFUN | |
1016 | due to limits in the Unix cpp. | |
1017 | ||
1018 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
d5783c40 JB |
1019 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
1020 | If omitted, WINDOW defaults to the selected window.\n\ | |
1021 | \n\ | |
1022 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1023 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1024 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1025 | minibuffer even if it is active.\n\ | |
1026 | \n\ | |
44fa5b1e JB |
1027 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1028 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1029 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1030 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1031 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1032 | \n\ |
44fa5b1e JB |
1033 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1034 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1035 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1036 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1037 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1038 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1039 | \n\ |
1040 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1041 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1042 | windows, eventually ending up back at the window you started with.\n\ | |
1043 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1044 | (window, minibuf, all_frames) */ |
1045 | ||
1046 | ||
1047 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1048 | 0) | |
44fa5b1e JB |
1049 | (window, minibuf, all_frames) |
1050 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1051 | { |
1052 | register Lisp_Object tem; | |
d5783c40 | 1053 | Lisp_Object start_window; |
7ab12479 | 1054 | |
265a9e55 | 1055 | if (NILP (window)) |
7ab12479 JB |
1056 | window = selected_window; |
1057 | else | |
605be8af | 1058 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1059 | |
d5783c40 JB |
1060 | start_window = window; |
1061 | ||
1062 | /* minibuf == nil may or may not include minibuffers. | |
1063 | Decide if it does. */ | |
265a9e55 | 1064 | if (NILP (minibuf)) |
fbdc1545 RS |
1065 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1066 | else if (! EQ (minibuf, Qt)) | |
1067 | minibuf = Qlambda; | |
1068 | /* Now minibuf can be t => count all minibuffer windows, | |
1069 | lambda => count none of them, | |
1070 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1071 | |
c6e73093 | 1072 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1073 | /* all_frames == nil doesn't specify which frames to include. |
1074 | Decide which frames it includes. */ | |
1075 | if (NILP (all_frames)) | |
fbdc1545 | 1076 | all_frames = (! EQ (minibuf, Qlambda) |
44fa5b1e JB |
1077 | ? (FRAME_MINIBUF_WINDOW |
1078 | (XFRAME | |
1079 | (WINDOW_FRAME | |
d5783c40 JB |
1080 | (XWINDOW (window))))) |
1081 | : Qnil); | |
89bca612 RS |
1082 | else if (EQ (all_frames, Qvisible)) |
1083 | ; | |
f812f9c6 RS |
1084 | else if (XFASTINT (all_frames) == 0) |
1085 | ; | |
1f4c5d09 RS |
1086 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1087 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1088 | return the first window on the frame. */ | |
1089 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1090 | else if (! EQ (all_frames, Qt)) |
1091 | all_frames = Qnil; | |
644b477c RS |
1092 | /* Now all_frames is t meaning search all frames, |
1093 | nil meaning search just current frame, | |
f812f9c6 RS |
1094 | visible meaning search just visible frames, |
1095 | 0 meaning search visible and iconified frames, | |
644b477c | 1096 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 1097 | #endif |
7ab12479 JB |
1098 | |
1099 | /* Do this loop at least once, to get the previous window, and perhaps | |
1100 | again, if we hit the minibuffer and that is not acceptable. */ | |
1101 | do | |
1102 | { | |
1103 | /* Find a window that actually has a previous one. This loop | |
1104 | climbs up the tree. */ | |
265a9e55 JB |
1105 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1106 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1107 | window = tem; |
d5783c40 | 1108 | else |
7ab12479 | 1109 | { |
44fa5b1e JB |
1110 | /* We have found the top window on the frame. |
1111 | Which frames are acceptable? */ | |
1112 | tem = WINDOW_FRAME (XWINDOW (window)); | |
1113 | #ifdef MULTI_FRAME | |
1114 | if (! NILP (all_frames)) | |
dbc4e1c1 JB |
1115 | /* It's actually important that we use prev_frame here, |
1116 | rather than next_frame. All the windows acceptable | |
1117 | according to the given parameters should form a ring; | |
1118 | Fnext_window and Fprevious_window should go back and | |
1119 | forth around the ring. If we use next_frame here, | |
1120 | then Fnext_window and Fprevious_window take different | |
1121 | paths through the set of acceptable windows. | |
1122 | window_loop assumes that these `ring' requirement are | |
1123 | met. */ | |
1bb80f72 RS |
1124 | { |
1125 | Lisp_Object tem1; | |
1126 | ||
1127 | tem1 = tem; | |
1128 | tem = prev_frame (tem, all_frames); | |
1129 | /* In the case where the minibuffer is active, | |
1130 | and we include its frame as well as the selected one, | |
1131 | next_frame may get stuck in that frame. | |
1132 | If that happens, go back to the selected frame | |
1133 | so we can complete the cycle. */ | |
1134 | if (EQ (tem, tem1)) | |
74112613 | 1135 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1136 | } |
7ab12479 | 1137 | #endif |
644b477c RS |
1138 | /* If this frame has a minibuffer, find that window first, |
1139 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1140 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1141 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1142 | else | |
644b477c | 1143 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1144 | |
7ab12479 JB |
1145 | break; |
1146 | } | |
1147 | ||
1148 | window = tem; | |
1149 | /* If we're in a combination window, find its last child and | |
1150 | recurse on that. Otherwise, we've found the window we want. */ | |
1151 | while (1) | |
1152 | { | |
265a9e55 | 1153 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1154 | window = XWINDOW (window)->hchild; |
265a9e55 | 1155 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1156 | window = XWINDOW (window)->vchild; |
1157 | else break; | |
265a9e55 | 1158 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1159 | window = tem; |
1160 | } | |
1161 | } | |
fbdc1545 | 1162 | /* Which windows are acceptible? |
d5783c40 | 1163 | Exit the loop and accept this window if |
fbdc1545 RS |
1164 | this isn't a minibuffer window, |
1165 | or we're accepting all minibuffer windows, | |
1166 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1167 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1168 | while (MINI_WINDOW_P (XWINDOW (window)) |
fbdc1545 RS |
1169 | && ! EQ (minibuf, Qt) |
1170 | && ! EQ (minibuf, window) | |
1171 | && ! EQ (window, start_window)); | |
7ab12479 JB |
1172 | |
1173 | return window; | |
1174 | } | |
1175 | ||
62c07cc7 | 1176 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1177 | "Select the ARG'th different window on this frame.\n\ |
1178 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1179 | This command selects the window ARG steps away in that order.\n\ |
1180 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e JB |
1181 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
1182 | (n, all_frames) | |
1183 | register Lisp_Object n, all_frames; | |
7ab12479 JB |
1184 | { |
1185 | register int i; | |
1186 | register Lisp_Object w; | |
1187 | ||
1188 | CHECK_NUMBER (n, 0); | |
1189 | w = selected_window; | |
1190 | i = XINT (n); | |
1191 | ||
1192 | while (i > 0) | |
1193 | { | |
44fa5b1e | 1194 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1195 | i--; |
1196 | } | |
1197 | while (i < 0) | |
1198 | { | |
44fa5b1e | 1199 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1200 | i++; |
1201 | } | |
1202 | Fselect_window (w); | |
1203 | return Qnil; | |
1204 | } | |
1205 | \f | |
1206 | /* Look at all windows, performing an operation specified by TYPE | |
1207 | with argument OBJ. | |
75d8f668 | 1208 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1209 | Qnil, look at just the selected frame; |
89bca612 | 1210 | Qvisible, look at visible frames; |
75d8f668 | 1211 | a frame, just look at windows on that frame. |
7ab12479 JB |
1212 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1213 | */ | |
1214 | ||
1215 | enum window_loop | |
1216 | { | |
1217 | WINDOW_LOOP_UNUSED, | |
1218 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1219 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1220 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1221 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1222 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1223 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1224 | }; |
1225 | ||
1226 | static Lisp_Object | |
44fa5b1e | 1227 | window_loop (type, obj, mini, frames) |
7ab12479 | 1228 | enum window_loop type; |
44fa5b1e | 1229 | register Lisp_Object obj, frames; |
7ab12479 JB |
1230 | int mini; |
1231 | { | |
1232 | register Lisp_Object w; | |
1233 | register Lisp_Object best_window; | |
1234 | register Lisp_Object next_window; | |
4b206065 | 1235 | register Lisp_Object last_window; |
44fa5b1e | 1236 | FRAME_PTR frame; |
89bca612 RS |
1237 | Lisp_Object frame_arg; |
1238 | frame_arg = Qt; | |
44fa5b1e | 1239 | |
4b206065 | 1240 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1241 | /* If we're only looping through windows on a particular frame, |
1242 | frame points to that frame. If we're looping through windows | |
1243 | on all frames, frame is 0. */ | |
1244 | if (FRAMEP (frames)) | |
1245 | frame = XFRAME (frames); | |
1246 | else if (NILP (frames)) | |
1247 | frame = selected_frame; | |
7ab12479 | 1248 | else |
44fa5b1e | 1249 | frame = 0; |
89bca612 RS |
1250 | if (frame) |
1251 | frame_arg = Qlambda; | |
f812f9c6 RS |
1252 | else if (XFASTINT (frames) == 0) |
1253 | frame_arg = frames; | |
89bca612 RS |
1254 | else if (EQ (frames, Qvisible)) |
1255 | frame_arg = frames; | |
4b206065 JB |
1256 | #else |
1257 | frame = 0; | |
1258 | #endif | |
7ab12479 | 1259 | |
89bca612 RS |
1260 | /* frame_arg is Qlambda to stick to one frame, |
1261 | Qvisible to consider all visible frames, | |
1262 | or Qt otherwise. */ | |
1263 | ||
7ab12479 | 1264 | /* Pick a window to start with. */ |
017b2bad | 1265 | if (WINDOWP (obj)) |
4b206065 | 1266 | w = obj; |
44fa5b1e | 1267 | else if (frame) |
4b206065 | 1268 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1269 | else |
4b206065 JB |
1270 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1271 | ||
1272 | /* Figure out the last window we're going to mess with. Since | |
1273 | Fnext_window, given the same options, is guaranteed to go in a | |
1274 | ring, we can just use Fprevious_window to find the last one. | |
1275 | ||
1276 | We can't just wait until we hit the first window again, because | |
1277 | it might be deleted. */ | |
1278 | ||
89bca612 | 1279 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1280 | |
7ab12479 | 1281 | best_window = Qnil; |
4b206065 | 1282 | for (;;) |
7ab12479 | 1283 | { |
75d8f668 JB |
1284 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1285 | ||
7ab12479 JB |
1286 | /* Pick the next window now, since some operations will delete |
1287 | the current window. */ | |
89bca612 | 1288 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1289 | |
d29a5631 RS |
1290 | /* Note that we do not pay attention here to whether |
1291 | the frame is visible, since Fnext_window skips non-visible frames | |
1292 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1293 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1294 | || (mini && minibuf_level > 0)) |
1295 | switch (type) | |
1296 | { | |
1297 | case GET_BUFFER_WINDOW: | |
7ab12479 JB |
1298 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) |
1299 | return w; | |
1300 | break; | |
1301 | ||
1302 | case GET_LRU_WINDOW: | |
1303 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1304 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
a2db42d6 | 1305 | != FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (w))))) |
7ab12479 | 1306 | break; |
7ab12479 JB |
1307 | /* Ignore dedicated windows and minibuffers. */ |
1308 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1309 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1310 | break; |
265a9e55 | 1311 | if (NILP (best_window) |
7ab12479 JB |
1312 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1313 | > XFASTINT (XWINDOW (w)->use_time))) | |
1314 | best_window = w; | |
1315 | break; | |
1316 | ||
1317 | case DELETE_OTHER_WINDOWS: | |
1318 | if (XWINDOW (w) != XWINDOW (obj)) | |
1319 | Fdelete_window (w); | |
1320 | break; | |
1321 | ||
1322 | case DELETE_BUFFER_WINDOWS: | |
1323 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1324 | { | |
3548e138 RS |
1325 | #ifdef MULTI_FRAME |
1326 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); | |
1327 | ||
1328 | /* If this window is dedicated, and in a frame of its own, | |
1329 | kill the frame. */ | |
1330 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1331 | && !NILP (XWINDOW (w)->dedicated) | |
1332 | && other_visible_frames (f)) | |
7ab12479 | 1333 | { |
3548e138 RS |
1334 | /* Skip the other windows on this frame. |
1335 | There might be one, the minibuffer! */ | |
1336 | if (! EQ (w, last_window)) | |
1337 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1338 | { | |
1339 | /* As we go, check for the end of the loop. | |
1340 | We mustn't start going around a second time. */ | |
1341 | if (EQ (next_window, last_window)) | |
1342 | { | |
1343 | last_window = w; | |
1344 | break; | |
1345 | } | |
1346 | next_window = Fnext_window (next_window, | |
1347 | mini ? Qt : Qnil, | |
1348 | frame_arg); | |
1349 | } | |
1350 | /* Now we can safely delete the frame. */ | |
1351 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1352 | } |
1353 | else | |
3548e138 RS |
1354 | #endif |
1355 | /* If we're deleting the buffer displayed in the only window | |
1356 | on the frame, find a new buffer to display there. */ | |
1357 | if (NILP (XWINDOW (w)->parent)) | |
1358 | { | |
1359 | Lisp_Object new_buffer; | |
1360 | new_buffer = Fother_buffer (obj, Qnil); | |
1361 | if (NILP (new_buffer)) | |
1362 | new_buffer | |
1363 | = Fget_buffer_create (build_string ("*scratch*")); | |
1364 | Fset_window_buffer (w, new_buffer); | |
1365 | if (EQ (w, selected_window)) | |
1366 | Fset_buffer (XWINDOW (w)->buffer); | |
1367 | } | |
1368 | else | |
1369 | Fdelete_window (w); | |
7ab12479 JB |
1370 | } |
1371 | break; | |
1372 | ||
1373 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1374 | /* Ignore dedicated windows and minibuffers. */ |
1375 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1376 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1377 | break; |
1378 | { | |
1379 | struct window *best_window_ptr = XWINDOW (best_window); | |
1380 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1381 | if (NILP (best_window) |
1382 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1383 | > (XFASTINT (best_window_ptr->height) | |
1384 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1385 | best_window = w; |
1386 | } | |
1387 | break; | |
1388 | ||
1389 | case UNSHOW_BUFFER: | |
1390 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1391 | { | |
1392 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1393 | Lisp_Object another_buffer; |
38ab08d1 | 1394 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1395 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1396 | if (NILP (another_buffer)) |
7ab12479 JB |
1397 | another_buffer |
1398 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1399 | #ifdef MULTI_FRAME |
1400 | /* If this window is dedicated, and in a frame of its own, | |
1401 | kill the frame. */ | |
1402 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1403 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1404 | && other_visible_frames (f)) |
45945a7b RS |
1405 | { |
1406 | /* Skip the other windows on this frame. | |
1407 | There might be one, the minibuffer! */ | |
1408 | if (! EQ (w, last_window)) | |
1409 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1410 | { | |
1411 | /* As we go, check for the end of the loop. | |
1412 | We mustn't start going around a second time. */ | |
1413 | if (EQ (next_window, last_window)) | |
1414 | { | |
1415 | last_window = w; | |
1416 | break; | |
1417 | } | |
1418 | next_window = Fnext_window (next_window, | |
1419 | mini ? Qt : Qnil, | |
1420 | frame_arg); | |
1421 | } | |
1422 | /* Now we can safely delete the frame. */ | |
1423 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1424 | } | |
38ab08d1 RS |
1425 | else |
1426 | #endif | |
1427 | { | |
1428 | /* Otherwise show a different buffer in the window. */ | |
1429 | XWINDOW (w)->dedicated = Qnil; | |
1430 | Fset_window_buffer (w, another_buffer); | |
1431 | if (EQ (w, selected_window)) | |
1432 | Fset_buffer (XWINDOW (w)->buffer); | |
1433 | } | |
7ab12479 JB |
1434 | } |
1435 | break; | |
1436 | } | |
4b206065 JB |
1437 | |
1438 | if (EQ (w, last_window)) | |
1439 | break; | |
1440 | ||
7ab12479 JB |
1441 | w = next_window; |
1442 | } | |
7ab12479 JB |
1443 | |
1444 | return best_window; | |
1445 | } | |
605be8af | 1446 | |
7ab12479 JB |
1447 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1448 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1449 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1450 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1451 | If FRAME is t, search all frames.\n\ |
1452 | If FRAME is nil, search only the selected frame.\n\ | |
1453 | If FRAME is a frame, search only that frame.") | |
1454 | (frame) | |
1455 | Lisp_Object frame; | |
7ab12479 JB |
1456 | { |
1457 | register Lisp_Object w; | |
1458 | /* First try for a window that is full-width */ | |
89bca612 | 1459 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1460 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1461 | return w; |
1462 | /* If none of them, try the rest */ | |
89bca612 | 1463 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1464 | } |
1465 | ||
1466 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1467 | "Return the largest window in area.\n\ | |
89bca612 | 1468 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1469 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1470 | If FRAME is t, search all frames.\n\ |
1471 | If FRAME is nil, search only the selected frame.\n\ | |
1472 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1473 | (frame) |
1474 | Lisp_Object frame; | |
7ab12479 JB |
1475 | { |
1476 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1477 | frame); |
7ab12479 JB |
1478 | } |
1479 | ||
1480 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1481 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1482 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1483 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1484 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1485 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1486 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1487 | (buffer, frame) |
1488 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1489 | { |
1490 | buffer = Fget_buffer (buffer); | |
017b2bad | 1491 | if (BUFFERP (buffer)) |
44fa5b1e | 1492 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1493 | else |
1494 | return Qnil; | |
1495 | } | |
1496 | ||
1497 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1498 | 0, 1, "", | |
44fa5b1e | 1499 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1500 | Only the frame WINDOW is on is affected.\n\ |
1501 | This function tries to reduce display jumps\n\ | |
1502 | by keeping the text previously visible in WINDOW\n\ | |
1503 | in the same place on the frame. Doing this depends on\n\ | |
1504 | the value of (window-start WINDOW), so if calling this function\n\ | |
1505 | in a program gives strange scrolling, make sure the window-start\n\ | |
1506 | value is reasonable when this function is called.") | |
7ab12479 JB |
1507 | (window) |
1508 | Lisp_Object window; | |
1509 | { | |
1510 | struct window *w; | |
00d3d838 | 1511 | int startpos; |
7ab12479 JB |
1512 | int top; |
1513 | ||
265a9e55 | 1514 | if (NILP (window)) |
7ab12479 JB |
1515 | window = selected_window; |
1516 | else | |
605be8af | 1517 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1518 | |
1519 | w = XWINDOW (window); | |
a2b38b3c | 1520 | |
00d3d838 KH |
1521 | startpos = marker_position (w->start); |
1522 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1523 | |
a2b38b3c RS |
1524 | if (MINI_WINDOW_P (w) && top > 0) |
1525 | error ("Can't expand minibuffer to full frame"); | |
1526 | ||
70728a80 | 1527 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1528 | |
00d3d838 KH |
1529 | /* Try to minimize scrolling, by setting the window start to the point |
1530 | will cause the text at the old window start to be at the same place | |
1531 | on the frame. But don't try to do this if the window start is | |
1532 | outside the visible portion (as might happen when the display is | |
1533 | not current, due to typeahead). */ | |
1534 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1535 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1536 | { | |
1537 | struct position pos; | |
1538 | struct buffer *obuf = current_buffer; | |
1539 | ||
1540 | Fset_buffer (w->buffer); | |
1541 | /* This computation used to temporarily move point, but that can | |
1542 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1543 | pos = *vmotion (startpos, -top, w); |
00d3d838 KH |
1544 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
1545 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
1546 | || FETCH_CHAR (pos.bufpos - 1) == '\n') ? Qt | |
1547 | : Qnil); | |
1548 | ||
1549 | set_buffer_internal (obuf); | |
1550 | } | |
7ab12479 JB |
1551 | return Qnil; |
1552 | } | |
1553 | ||
1554 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1555 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1556 | "Delete all windows showing BUFFER.\n\ |
1557 | Optional second argument FRAME controls which frames are affected.\n\ | |
1558 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1559 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1560 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1561 | If a frame, delete only windows showing BUFFER in that frame.") |
1562 | (buffer, frame) | |
1563 | Lisp_Object buffer, frame; | |
7ab12479 | 1564 | { |
26f6279d JB |
1565 | #ifdef MULTI_FRAME |
1566 | /* FRAME uses t and nil to mean the opposite of what window_loop | |
1567 | expects. */ | |
1568 | if (! FRAMEP (frame)) | |
1569 | frame = NILP (frame) ? Qt : Qnil; | |
1570 | #else | |
1571 | frame = Qt; | |
1572 | #endif | |
1573 | ||
265a9e55 | 1574 | if (!NILP (buffer)) |
7ab12479 JB |
1575 | { |
1576 | buffer = Fget_buffer (buffer); | |
1577 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1578 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1579 | } |
1580 | return Qnil; | |
1581 | } | |
1582 | ||
1583 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1584 | Sreplace_buffer_in_windows, | |
1585 | 1, 1, "bReplace buffer in windows: ", | |
1586 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1587 | (buffer) | |
1588 | Lisp_Object buffer; | |
1589 | { | |
265a9e55 | 1590 | if (!NILP (buffer)) |
7ab12479 JB |
1591 | { |
1592 | buffer = Fget_buffer (buffer); | |
1593 | CHECK_BUFFER (buffer, 0); | |
1594 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1595 | } | |
1596 | return Qnil; | |
1597 | } | |
1598 | \f | |
1599 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1600 | |
1601 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1602 | might crash Emacs. */ | |
1603 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1604 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1605 | ||
1606 | /* Make sure that window_min_height and window_min_width are | |
1607 | not too small; if they are, set them to safe minima. */ | |
1608 | ||
1609 | static void | |
1610 | check_min_window_sizes () | |
1611 | { | |
1612 | /* Smaller values might permit a crash. */ | |
1613 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1614 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1615 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1616 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1617 | } | |
1618 | ||
1619 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1620 | minimum allowable size. */ | |
605be8af | 1621 | void |
a481b3ea | 1622 | check_frame_size (frame, rows, cols) |
605be8af JB |
1623 | FRAME_PTR frame; |
1624 | int *rows, *cols; | |
a481b3ea | 1625 | { |
628df3bf JB |
1626 | /* For height, we have to see: |
1627 | whether the frame has a minibuffer, | |
1628 | whether it wants a mode line, and | |
1629 | whether it has a menu bar. */ | |
a481b3ea | 1630 | int min_height = |
79f92720 JB |
1631 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1632 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1633 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1634 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1635 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1636 | |
1637 | if (*rows < min_height) | |
1638 | *rows = min_height; | |
1639 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1640 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1641 | } | |
1642 | ||
7ab12479 JB |
1643 | /* Normally the window is deleted if it gets too small. |
1644 | nodelete nonzero means do not do this. | |
1645 | (The caller should check later and do so if appropriate) */ | |
1646 | ||
1647 | set_window_height (window, height, nodelete) | |
1648 | Lisp_Object window; | |
1649 | int height; | |
1650 | int nodelete; | |
1651 | { | |
1652 | register struct window *w = XWINDOW (window); | |
1653 | register struct window *c; | |
1654 | int oheight = XFASTINT (w->height); | |
1655 | int top, pos, lastbot, opos, lastobot; | |
1656 | Lisp_Object child; | |
1657 | ||
a481b3ea JB |
1658 | check_min_window_sizes (); |
1659 | ||
7ab12479 | 1660 | if (!nodelete |
265a9e55 | 1661 | && ! NILP (w->parent) |
7ab12479 JB |
1662 | && height < window_min_height) |
1663 | { | |
1664 | Fdelete_window (window); | |
1665 | return; | |
1666 | } | |
1667 | ||
d834a2e9 | 1668 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1669 | windows_or_buffers_changed++; |
29aeee73 RS |
1670 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1671 | ||
d834a2e9 | 1672 | XSETFASTINT (w->height, height); |
265a9e55 | 1673 | if (!NILP (w->hchild)) |
7ab12479 | 1674 | { |
265a9e55 | 1675 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1676 | { |
1677 | XWINDOW (child)->top = w->top; | |
1678 | set_window_height (child, height, nodelete); | |
1679 | } | |
1680 | } | |
265a9e55 | 1681 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1682 | { |
1683 | lastbot = top = XFASTINT (w->top); | |
1684 | lastobot = 0; | |
265a9e55 | 1685 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1686 | { |
1687 | c = XWINDOW (child); | |
1688 | ||
1689 | opos = lastobot + XFASTINT (c->height); | |
1690 | ||
d834a2e9 | 1691 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1692 | |
1693 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1694 | ||
1695 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1696 | set_window_height (child, pos + top - lastbot, 1); | |
1697 | ||
1698 | /* Now advance child to next window, | |
1699 | and set lastbot if child was not just deleted. */ | |
1700 | lastbot = pos + top; | |
1701 | lastobot = opos; | |
1702 | } | |
1703 | /* Now delete any children that became too small. */ | |
1704 | if (!nodelete) | |
265a9e55 | 1705 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1706 | { |
1707 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1708 | } | |
1709 | } | |
1710 | } | |
1711 | ||
1712 | /* Recursively set width of WINDOW and its inferiors. */ | |
1713 | ||
1714 | set_window_width (window, width, nodelete) | |
1715 | Lisp_Object window; | |
1716 | int width; | |
1717 | int nodelete; | |
1718 | { | |
1719 | register struct window *w = XWINDOW (window); | |
1720 | register struct window *c; | |
1721 | int owidth = XFASTINT (w->width); | |
1722 | int left, pos, lastright, opos, lastoright; | |
1723 | Lisp_Object child; | |
1724 | ||
abdced83 | 1725 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 JB |
1726 | { |
1727 | Fdelete_window (window); | |
1728 | return; | |
1729 | } | |
1730 | ||
d834a2e9 | 1731 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1732 | windows_or_buffers_changed++; |
29aeee73 RS |
1733 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1734 | ||
d834a2e9 | 1735 | XSETFASTINT (w->width, width); |
265a9e55 | 1736 | if (!NILP (w->vchild)) |
7ab12479 | 1737 | { |
265a9e55 | 1738 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1739 | { |
1740 | XWINDOW (child)->left = w->left; | |
1741 | set_window_width (child, width, nodelete); | |
1742 | } | |
1743 | } | |
265a9e55 | 1744 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1745 | { |
1746 | lastright = left = XFASTINT (w->left); | |
1747 | lastoright = 0; | |
265a9e55 | 1748 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1749 | { |
1750 | c = XWINDOW (child); | |
1751 | ||
1752 | opos = lastoright + XFASTINT (c->width); | |
1753 | ||
d834a2e9 | 1754 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1755 | |
1756 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1757 | ||
1758 | /* Inhibit deletion for becoming too small */ | |
1759 | set_window_width (child, pos + left - lastright, 1); | |
1760 | ||
1761 | /* Now advance child to next window, | |
1762 | and set lastright if child was not just deleted. */ | |
1763 | lastright = pos + left, lastoright = opos; | |
1764 | } | |
1765 | /* Delete children that became too small */ | |
1766 | if (!nodelete) | |
265a9e55 | 1767 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1768 | { |
1769 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1770 | } | |
1771 | } | |
1772 | } | |
1773 | \f | |
1d8d96fa | 1774 | int window_select_count; |
7ab12479 JB |
1775 | |
1776 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1777 | "Make WINDOW display BUFFER as its contents.\n\ | |
1778 | BUFFER can be a buffer or buffer name.") | |
1779 | (window, buffer) | |
1780 | register Lisp_Object window, buffer; | |
1781 | { | |
1782 | register Lisp_Object tem; | |
1783 | register struct window *w = decode_window (window); | |
1784 | ||
1785 | buffer = Fget_buffer (buffer); | |
1786 | CHECK_BUFFER (buffer, 1); | |
1787 | ||
265a9e55 | 1788 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1789 | error ("Attempt to display deleted buffer"); |
1790 | ||
1791 | tem = w->buffer; | |
265a9e55 | 1792 | if (NILP (tem)) |
7ab12479 JB |
1793 | error ("Window is deleted"); |
1794 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1795 | is first being set up. */ | |
1796 | { | |
265a9e55 | 1797 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1798 | error ("Window is dedicated to `%s'", |
1799 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1800 | |
1801 | unshow_buffer (w); | |
1802 | } | |
1803 | ||
1804 | w->buffer = buffer; | |
d834a2e9 | 1805 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1806 | w->window_end_valid = Qnil; |
d834a2e9 | 1807 | XSETFASTINT(w->hscroll, 0); |
7ab12479 JB |
1808 | Fset_marker (w->pointm, |
1809 | make_number (BUF_PT (XBUFFER (buffer))), | |
1810 | buffer); | |
1811 | set_marker_restricted (w->start, | |
1812 | make_number (XBUFFER (buffer)->last_window_start), | |
1813 | buffer); | |
1814 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1815 | w->force_start = Qnil; |
d834a2e9 | 1816 | XSETFASTINT (w->last_modified, 0); |
7ab12479 JB |
1817 | windows_or_buffers_changed++; |
1818 | if (EQ (window, selected_window)) | |
1819 | Fset_buffer (buffer); | |
1820 | ||
1821 | return Qnil; | |
1822 | } | |
1823 | ||
1824 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1825 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1826 | The main editor command loop selects the buffer of the selected window\n\ | |
1827 | before each command.") | |
1828 | (window) | |
1829 | register Lisp_Object window; | |
1830 | { | |
1831 | register struct window *w; | |
1832 | register struct window *ow = XWINDOW (selected_window); | |
1833 | ||
605be8af | 1834 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1835 | |
1836 | w = XWINDOW (window); | |
1837 | ||
265a9e55 | 1838 | if (NILP (w->buffer)) |
7ab12479 JB |
1839 | error ("Trying to select deleted window or non-leaf window"); |
1840 | ||
d834a2e9 | 1841 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
1842 | if (EQ (window, selected_window)) |
1843 | return window; | |
1844 | ||
1845 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1846 | ow->buffer); | |
1847 | ||
1848 | selected_window = window; | |
44fa5b1e JB |
1849 | #ifdef MULTI_FRAME |
1850 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) | |
7ab12479 | 1851 | { |
44fa5b1e | 1852 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
1853 | /* Use this rather than Fhandle_switch_frame |
1854 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
1855 | move around in the state where a minibuffer in a separate | |
1856 | frame is active. */ | |
1857 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1858 | } |
1859 | else | |
44fa5b1e | 1860 | selected_frame->selected_window = window; |
7ab12479 JB |
1861 | #endif |
1862 | ||
1863 | record_buffer (w->buffer); | |
1864 | Fset_buffer (w->buffer); | |
1865 | ||
1866 | /* Go to the point recorded in the window. | |
1867 | This is important when the buffer is in more | |
1868 | than one window. It also matters when | |
1869 | redisplay_window has altered point after scrolling, | |
1870 | because it makes the change only in the window. */ | |
1871 | { | |
1872 | register int new_point = marker_position (w->pointm); | |
1873 | if (new_point < BEGV) | |
1874 | SET_PT (BEGV); | |
a9c95e08 | 1875 | else if (new_point > ZV) |
7ab12479 JB |
1876 | SET_PT (ZV); |
1877 | else | |
1878 | SET_PT (new_point); | |
1879 | } | |
1880 | ||
1881 | windows_or_buffers_changed++; | |
1882 | return window; | |
1883 | } | |
1884 | ||
35aaf00c | 1885 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
869e65bb | 1886 | "bDisplay buffer: \nP", |
7ab12479 JB |
1887 | "Make BUFFER appear in some window but don't select it.\n\ |
1888 | BUFFER can be a buffer or a buffer name.\n\ | |
1889 | If BUFFER is shown already in some window, just use that one,\n\ | |
1890 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 1891 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 1892 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
7ab12479 JB |
1893 | Returns the window displaying BUFFER.") |
1894 | (buffer, not_this_window) | |
1895 | register Lisp_Object buffer, not_this_window; | |
1896 | { | |
a90712c2 | 1897 | register Lisp_Object window, tem; |
7ab12479 JB |
1898 | |
1899 | buffer = Fget_buffer (buffer); | |
1900 | CHECK_BUFFER (buffer, 0); | |
1901 | ||
265a9e55 | 1902 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1903 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1904 | ||
265a9e55 | 1905 | if (NILP (not_this_window) |
7ab12479 JB |
1906 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1907 | return selected_window; | |
1908 | ||
855d8627 RS |
1909 | /* See if the user has specified this buffer should appear |
1910 | in the selected window. */ | |
1911 | if (NILP (not_this_window)) | |
1912 | { | |
1913 | tem = Fmember (XBUFFER (buffer)->name, Vsame_window_buffer_names); | |
1914 | if (!NILP (tem)) | |
c63dc4a2 RS |
1915 | { |
1916 | Fswitch_to_buffer (buffer, Qnil); | |
1917 | return selected_window; | |
1918 | } | |
855d8627 RS |
1919 | |
1920 | tem = Fassoc (XBUFFER (buffer)->name, Vsame_window_buffer_names); | |
1921 | if (!NILP (tem)) | |
c63dc4a2 RS |
1922 | { |
1923 | Fswitch_to_buffer (buffer, Qnil); | |
1924 | return selected_window; | |
1925 | } | |
855d8627 RS |
1926 | |
1927 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCONS (tem)->cdr) | |
1928 | { | |
1929 | Lisp_Object car = XCONS (tem)->car; | |
1930 | if (STRINGP (car) | |
1931 | && fast_string_match (car, XBUFFER (buffer)->name) >= 0) | |
c63dc4a2 RS |
1932 | { |
1933 | Fswitch_to_buffer (buffer, Qnil); | |
1934 | return selected_window; | |
1935 | } | |
855d8627 RS |
1936 | else if (CONSP (car) |
1937 | && STRINGP (XCONS (car)->car) | |
1938 | && fast_string_match (XCONS (car)->car, | |
1939 | XBUFFER (buffer)->name) >= 0) | |
c63dc4a2 RS |
1940 | { |
1941 | Fswitch_to_buffer (buffer, Qnil); | |
1942 | return selected_window; | |
1943 | } | |
855d8627 RS |
1944 | } |
1945 | } | |
1946 | ||
c6e73093 | 1947 | #ifdef MULTI_FRAME |
e8edb3ae | 1948 | /* If pop_up_frames, |
73dc5198 KH |
1949 | look for a window showing BUFFER on any visible or iconified frame. |
1950 | Otherwise search only the current frame. */ | |
1951 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
1952 | XSETFASTINT (tem, 0); | |
1953 | else | |
c6e73093 | 1954 | #endif |
73dc5198 KH |
1955 | XSETFRAME (tem, last_nonminibuf_frame); |
1956 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
1957 | if (!NILP (window) |
1958 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 1959 | { |
7cab5d2c | 1960 | #ifdef MULTI_FRAME |
f812f9c6 RS |
1961 | if (FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (window))))) |
1962 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7cab5d2c | 1963 | #endif |
f812f9c6 RS |
1964 | return window; |
1965 | } | |
7ab12479 | 1966 | |
a90712c2 RS |
1967 | /* Certain buffer names get special handling. */ |
1968 | if (! NILP (Vspecial_display_function)) | |
1969 | { | |
1970 | tem = Fmember (XBUFFER (buffer)->name, Vspecial_display_buffer_names); | |
1971 | if (!NILP (tem)) | |
1972 | return call1 (Vspecial_display_function, buffer); | |
1973 | ||
0a952b57 RS |
1974 | tem = Fassoc (XBUFFER (buffer)->name, Vspecial_display_buffer_names); |
1975 | if (!NILP (tem)) | |
1976 | return call2 (Vspecial_display_function, buffer, XCONS (tem)->cdr); | |
1977 | ||
a90712c2 | 1978 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCONS (tem)->cdr) |
0a952b57 RS |
1979 | { |
1980 | Lisp_Object car = XCONS (tem)->car; | |
1981 | if (STRINGP (car) | |
1982 | && fast_string_match (car, XBUFFER (buffer)->name) >= 0) | |
1983 | return call1 (Vspecial_display_function, buffer); | |
1984 | else if (CONSP (car) | |
1985 | && STRINGP (XCONS (car)->car) | |
1986 | && fast_string_match (XCONS (car)->car, | |
1987 | XBUFFER (buffer)->name) >= 0) | |
1988 | return call2 (Vspecial_display_function, | |
1989 | buffer, | |
1990 | XCONS (car)->cdr); | |
1991 | } | |
a90712c2 RS |
1992 | } |
1993 | ||
44fa5b1e JB |
1994 | #ifdef MULTI_FRAME |
1995 | /* If there are no frames open that have more than a minibuffer, | |
1996 | we need to create a new frame. */ | |
1997 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 1998 | { |
a90712c2 | 1999 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2000 | Fset_window_buffer (window, buffer); |
7ab12479 JB |
2001 | return window; |
2002 | } | |
44fa5b1e | 2003 | #endif /* MULTI_FRAME */ |
7ab12479 | 2004 | |
43bad991 | 2005 | if (pop_up_windows |
44fa5b1e JB |
2006 | #ifdef MULTI_FRAME |
2007 | || FRAME_MINIBUF_ONLY_P (selected_frame) | |
cee67da9 RS |
2008 | /* If the current frame is a special display frame, |
2009 | don't try to reuse its windows. */ | |
2010 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 JB |
2011 | #endif |
2012 | ) | |
7ab12479 | 2013 | { |
12cae7c0 KH |
2014 | Lisp_Object frames; |
2015 | ||
2016 | frames = Qnil; | |
44fa5b1e JB |
2017 | #ifdef MULTI_FRAME |
2018 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) | |
74112613 | 2019 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2020 | #endif |
2021 | /* Don't try to create a window if would get an error */ | |
2022 | if (split_height_threshold < window_min_height << 1) | |
2023 | split_height_threshold = window_min_height << 1; | |
2024 | ||
cee67da9 RS |
2025 | /* Note that both Fget_largest_window and Fget_lru_window |
2026 | ignore minibuffers and dedicated windows. | |
2027 | This means they can return nil. */ | |
7ab12479 | 2028 | |
9f7a8b5d | 2029 | #ifdef MULTI_FRAME |
cee67da9 RS |
2030 | /* If the frame we would try to split cannot be split, |
2031 | try other frames. */ | |
2032 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
2033 | : last_nonminibuf_frame)) | |
2034 | { | |
2035 | /* Try visible frames first. */ | |
2036 | window = Fget_largest_window (Qvisible); | |
2037 | /* If that didn't work, try iconified frames. */ | |
2038 | if (NILP (window)) | |
2039 | window = Fget_largest_window (make_number (0)); | |
2040 | if (NILP (window)) | |
2041 | window = Fget_largest_window (Qt); | |
2042 | } | |
2043 | else | |
9f7a8b5d | 2044 | #endif |
cee67da9 RS |
2045 | window = Fget_largest_window (frames); |
2046 | ||
92cca945 RS |
2047 | /* If we got a tall enough full-width window that can be split, |
2048 | split it. */ | |
265a9e55 | 2049 | if (!NILP (window) |
92cca945 | 2050 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2051 | && window_height (window) >= split_height_threshold |
535e0b8e JB |
2052 | && (XFASTINT (XWINDOW (window)->width) |
2053 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) | |
7ab12479 JB |
2054 | window = Fsplit_window (window, Qnil, Qnil); |
2055 | else | |
2056 | { | |
1942f68f RS |
2057 | Lisp_Object upper, lower, other; |
2058 | ||
44fa5b1e | 2059 | window = Fget_lru_window (frames); |
92cca945 RS |
2060 | /* If the LRU window is selected, and big enough, |
2061 | and can be split, split it. */ | |
cee67da9 | 2062 | if (!NILP (window) |
92cca945 | 2063 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2064 | && (EQ (window, selected_window) |
2065 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2066 | && window_height (window) >= window_min_height << 1) |
2067 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 RS |
2068 | #ifdef MULTI_FRAME |
2069 | /* If Fget_lru_window returned nil, try other approaches. */ | |
2070 | /* Try visible frames first. */ | |
2071 | if (NILP (window)) | |
2072 | window = Fget_largest_window (Qvisible); | |
2073 | /* If that didn't work, try iconified frames. */ | |
2074 | if (NILP (window)) | |
2075 | window = Fget_largest_window (make_number (0)); | |
2076 | /* Try invisible frames. */ | |
2077 | if (NILP (window)) | |
2078 | window = Fget_largest_window (Qt); | |
2079 | /* As a last resort, make a new frame. */ | |
2080 | if (NILP (window)) | |
2081 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
2082 | #else | |
2083 | /* As a last resort, use a non minibuffer window. */ | |
2084 | if (NILP (window)) | |
2085 | window = Fframe_first_window (Fselected_frame ()); | |
2086 | #endif | |
1942f68f RS |
2087 | /* If window appears above or below another, |
2088 | even out their heights. */ | |
cac66e4f | 2089 | other = upper = lower = Qnil; |
1942f68f RS |
2090 | if (!NILP (XWINDOW (window)->prev)) |
2091 | other = upper = XWINDOW (window)->prev, lower = window; | |
2092 | if (!NILP (XWINDOW (window)->next)) | |
2093 | other = lower = XWINDOW (window)->next, upper = window; | |
2094 | if (!NILP (other) | |
2095 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
2096 | && XWINDOW (other)->top != XWINDOW (window)->top | |
2097 | && XWINDOW (other)->height > XWINDOW (window)->height) | |
2098 | { | |
2099 | int total = XWINDOW (other)->height + XWINDOW (window)->height; | |
8d77c0c8 KH |
2100 | Lisp_Object old_selected_window; |
2101 | old_selected_window = selected_window; | |
1942f68f | 2102 | |
8d77c0c8 | 2103 | selected_window = upper; |
1942f68f RS |
2104 | change_window_height (total / 2 - XWINDOW (upper)->height, 0); |
2105 | selected_window = old_selected_window; | |
2106 | } | |
7ab12479 JB |
2107 | } |
2108 | } | |
2109 | else | |
2110 | window = Fget_lru_window (Qnil); | |
2111 | ||
2112 | Fset_window_buffer (window, buffer); | |
2113 | return window; | |
2114 | } | |
2115 | ||
2116 | void | |
2117 | temp_output_buffer_show (buf) | |
2118 | register Lisp_Object buf; | |
2119 | { | |
2120 | register struct buffer *old = current_buffer; | |
2121 | register Lisp_Object window; | |
2122 | register struct window *w; | |
2123 | ||
2124 | Fset_buffer (buf); | |
c6367666 | 2125 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2126 | BEGV = BEG; |
2127 | ZV = Z; | |
2128 | SET_PT (BEG); | |
1479ef51 | 2129 | XBUFFER (buf)->clip_changed = 1; |
7ab12479 JB |
2130 | set_buffer_internal (old); |
2131 | ||
2132 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2133 | call1 (Vtemp_buffer_show_function, buf); | |
2134 | else | |
2135 | { | |
2136 | window = Fdisplay_buffer (buf, Qnil); | |
2137 | ||
44fa5b1e JB |
2138 | #ifdef MULTI_FRAME |
2139 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) | |
2140 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
2141 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
2142 | Vminibuf_scroll_window = window; |
2143 | w = XWINDOW (window); | |
d834a2e9 | 2144 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
2145 | set_marker_restricted (w->start, make_number (1), buf); |
2146 | set_marker_restricted (w->pointm, make_number (1), buf); | |
a58ec57d | 2147 | |
f52cca03 RS |
2148 | /* Run temp-buffer-show-hook, with the chosen window selected. */ |
2149 | if (!NILP (Vrun_hooks)) | |
2cccc823 | 2150 | { |
f52cca03 RS |
2151 | Lisp_Object tem; |
2152 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2153 | if (!NILP (tem)) |
2154 | { | |
f52cca03 RS |
2155 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2156 | if (!NILP (tem)) | |
2157 | { | |
2158 | int count = specpdl_ptr - specpdl; | |
2cccc823 | 2159 | |
f52cca03 RS |
2160 | /* Select the window that was chosen, for running the hook. */ |
2161 | record_unwind_protect (Fset_window_configuration, | |
2162 | Fcurrent_window_configuration (Qnil)); | |
2cccc823 | 2163 | |
f52cca03 RS |
2164 | Fselect_window (window); |
2165 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
2166 | unbind_to (count, Qnil); | |
2167 | } | |
2cccc823 RS |
2168 | } |
2169 | } | |
2170 | } | |
7ab12479 JB |
2171 | } |
2172 | \f | |
2173 | static | |
2174 | make_dummy_parent (window) | |
2175 | Lisp_Object window; | |
2176 | { | |
cffec418 | 2177 | Lisp_Object new; |
7ab12479 | 2178 | register struct window *o, *p; |
cffec418 KH |
2179 | register struct Lisp_Vector *vec; |
2180 | int i; | |
7ab12479 | 2181 | |
cffec418 KH |
2182 | o = XWINDOW (window); |
2183 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2184 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2185 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2186 | vec->size = VECSIZE (struct window); | |
2187 | p = (struct window *)vec; | |
2188 | XSETWINDOW (new, p); | |
7ab12479 | 2189 | |
d834a2e9 | 2190 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2191 | |
2192 | /* Put new into window structure in place of window */ | |
2193 | replace_window (window, new); | |
2194 | ||
2195 | o->next = Qnil; | |
2196 | o->prev = Qnil; | |
2197 | o->vchild = Qnil; | |
2198 | o->hchild = Qnil; | |
2199 | o->parent = new; | |
2200 | ||
2201 | p->start = Qnil; | |
2202 | p->pointm = Qnil; | |
2203 | p->buffer = Qnil; | |
2204 | } | |
2205 | ||
2206 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2207 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2208 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
2209 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
2210 | and put SIZE columns in the first of the pair.") | |
2211 | (window, chsize, horflag) | |
2212 | Lisp_Object window, chsize, horflag; | |
2213 | { | |
2214 | register Lisp_Object new; | |
2215 | register struct window *o, *p; | |
2216 | register int size; | |
2217 | ||
265a9e55 | 2218 | if (NILP (window)) |
7ab12479 JB |
2219 | window = selected_window; |
2220 | else | |
605be8af | 2221 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2222 | |
2223 | o = XWINDOW (window); | |
2224 | ||
265a9e55 | 2225 | if (NILP (chsize)) |
7ab12479 | 2226 | { |
265a9e55 | 2227 | if (!NILP (horflag)) |
7ab12479 JB |
2228 | /* Round odd size up, since this is for the left-hand window, |
2229 | and it will lose a column for the separators. */ | |
2230 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
2231 | else | |
2232 | size = XFASTINT (o->height) >> 1; | |
2233 | } | |
2234 | else | |
2235 | { | |
2236 | CHECK_NUMBER (chsize, 1); | |
2237 | size = XINT (chsize); | |
2238 | } | |
2239 | ||
2240 | if (MINI_WINDOW_P (o)) | |
2241 | error ("Attempt to split minibuffer window"); | |
44fa5b1e JB |
2242 | else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
2243 | error ("Attempt to split unsplittable frame"); | |
7ab12479 | 2244 | |
a481b3ea | 2245 | check_min_window_sizes (); |
7ab12479 | 2246 | |
265a9e55 | 2247 | if (NILP (horflag)) |
7ab12479 | 2248 | { |
3d22c388 RS |
2249 | if (size < window_min_height) |
2250 | error ("Window height %d too small (after splitting)", size); | |
2251 | if (size + window_min_height > XFASTINT (o->height)) | |
2252 | error ("Window height %d too small (after splitting)", | |
2253 | XFASTINT (o->height) - size); | |
265a9e55 JB |
2254 | if (NILP (o->parent) |
2255 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2256 | { |
2257 | make_dummy_parent (window); | |
2258 | new = o->parent; | |
2259 | XWINDOW (new)->vchild = window; | |
2260 | } | |
2261 | } | |
2262 | else | |
2263 | { | |
3d22c388 RS |
2264 | if (size < window_min_width) |
2265 | error ("Window width %d too small (after splitting)", size); | |
2266 | if (size + window_min_width > XFASTINT (o->width)) | |
2267 | error ("Window width %d too small (after splitting)", | |
2268 | XFASTINT (o->width) - size); | |
265a9e55 JB |
2269 | if (NILP (o->parent) |
2270 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2271 | { |
2272 | make_dummy_parent (window); | |
2273 | new = o->parent; | |
2274 | XWINDOW (new)->hchild = window; | |
2275 | } | |
2276 | } | |
2277 | ||
2278 | /* Now we know that window's parent is a vertical combination | |
2279 | if we are dividing vertically, or a horizontal combination | |
2280 | if we are making side-by-side windows */ | |
2281 | ||
2282 | windows_or_buffers_changed++; | |
29aeee73 | 2283 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (o))) = 1; |
7ab12479 JB |
2284 | new = make_window (); |
2285 | p = XWINDOW (new); | |
2286 | ||
44fa5b1e | 2287 | p->frame = o->frame; |
7ab12479 | 2288 | p->next = o->next; |
265a9e55 | 2289 | if (!NILP (p->next)) |
7ab12479 JB |
2290 | XWINDOW (p->next)->prev = new; |
2291 | p->prev = window; | |
2292 | o->next = new; | |
2293 | p->parent = o->parent; | |
2294 | p->buffer = Qt; | |
2295 | ||
2296 | Fset_window_buffer (new, o->buffer); | |
2297 | ||
44fa5b1e | 2298 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2299 | |
265a9e55 | 2300 | if (!NILP (horflag)) |
7ab12479 JB |
2301 | { |
2302 | p->height = o->height; | |
2303 | p->top = o->top; | |
d834a2e9 KH |
2304 | XSETFASTINT (p->width, XFASTINT (o->width) - size); |
2305 | XSETFASTINT (o->width, size); | |
2306 | XSETFASTINT (p->left, XFASTINT (o->left) + size); | |
7ab12479 JB |
2307 | } |
2308 | else | |
2309 | { | |
2310 | p->left = o->left; | |
2311 | p->width = o->width; | |
d834a2e9 KH |
2312 | XSETFASTINT (p->height, XFASTINT (o->height) - size); |
2313 | XSETFASTINT (o->height, size); | |
2314 | XSETFASTINT (p->top, XFASTINT (o->top) + size); | |
7ab12479 JB |
2315 | } |
2316 | ||
2317 | return new; | |
2318 | } | |
2319 | \f | |
2320 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2321 | "Make current window ARG lines bigger.\n\ | |
2322 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
2323 | (n, side) | |
2324 | register Lisp_Object n, side; | |
2325 | { | |
2326 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2327 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
2328 | return Qnil; |
2329 | } | |
2330 | ||
2331 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2332 | "Make current window ARG lines smaller.\n\ | |
2333 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
2334 | (n, side) | |
2335 | register Lisp_Object n, side; | |
2336 | { | |
2337 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2338 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
2339 | return Qnil; |
2340 | } | |
2341 | ||
2342 | int | |
2343 | window_height (window) | |
2344 | Lisp_Object window; | |
2345 | { | |
2346 | register struct window *p = XWINDOW (window); | |
2347 | return XFASTINT (p->height); | |
2348 | } | |
2349 | ||
2350 | int | |
2351 | window_width (window) | |
2352 | Lisp_Object window; | |
2353 | { | |
2354 | register struct window *p = XWINDOW (window); | |
2355 | return XFASTINT (p->width); | |
2356 | } | |
2357 | ||
05c2896a JB |
2358 | #define MINSIZE(w) \ |
2359 | (widthflag \ | |
2360 | ? window_min_width \ | |
2361 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2362 | |
2363 | #define CURBEG(w) \ | |
05c2896a | 2364 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2365 | |
2366 | #define CURSIZE(w) \ | |
05c2896a | 2367 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2368 | |
2369 | /* Unlike set_window_height, this function | |
2370 | also changes the heights of the siblings so as to | |
2371 | keep everything consistent. */ | |
2372 | ||
2373 | change_window_height (delta, widthflag) | |
2374 | register int delta; | |
2375 | int widthflag; | |
2376 | { | |
2377 | register Lisp_Object parent; | |
2378 | Lisp_Object window; | |
2379 | register struct window *p; | |
2380 | int *sizep; | |
2381 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2382 | register int (*setsizefun) () = (widthflag | |
2383 | ? set_window_width | |
2384 | : set_window_height); | |
2385 | ||
a481b3ea | 2386 | check_min_window_sizes (); |
7ab12479 JB |
2387 | |
2388 | window = selected_window; | |
2389 | while (1) | |
2390 | { | |
2391 | p = XWINDOW (window); | |
2392 | parent = p->parent; | |
265a9e55 | 2393 | if (NILP (parent)) |
7ab12479 JB |
2394 | { |
2395 | if (widthflag) | |
2396 | error ("No other window to side of this one"); | |
2397 | break; | |
2398 | } | |
265a9e55 JB |
2399 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2400 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2401 | break; |
2402 | window = parent; | |
2403 | } | |
2404 | ||
05c2896a | 2405 | sizep = &CURSIZE (window); |
7ab12479 | 2406 | |
7ab12479 JB |
2407 | { |
2408 | register int maxdelta; | |
7ab12479 | 2409 | |
265a9e55 JB |
2410 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2411 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2412 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2413 | /* This is a frame with only one window, a minibuffer-only |
2414 | or a minibufferless frame. */ | |
d5783c40 | 2415 | : (delta = 0)); |
7ab12479 JB |
2416 | |
2417 | if (delta > maxdelta) | |
2418 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2419 | the full frame, or make the only window aside from the |
2420 | minibuffer the full frame. */ | |
7ab12479 | 2421 | delta = maxdelta; |
6b54027b | 2422 | } |
d5783c40 | 2423 | |
6b54027b RS |
2424 | if (*sizep + delta < MINSIZE (window)) |
2425 | { | |
2426 | Fdelete_window (window); | |
d5783c40 | 2427 | return; |
6b54027b RS |
2428 | } |
2429 | ||
2430 | if (delta == 0) | |
2431 | return; | |
7ab12479 | 2432 | |
6b54027b RS |
2433 | if (!NILP (p->next) |
2434 | && (*sizefun) (p->next) - delta >= MINSIZE (p->next)) | |
7ab12479 JB |
2435 | { |
2436 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
2437 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 2438 | CURBEG (p->next) += delta; |
7ab12479 JB |
2439 | /* This does not change size of p->next, |
2440 | but it propagates the new top edge to its children */ | |
2441 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
2442 | } | |
6b54027b RS |
2443 | else if (!NILP (p->prev) |
2444 | && (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) | |
7ab12479 JB |
2445 | { |
2446 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 2447 | CURBEG (window) -= delta; |
7ab12479 JB |
2448 | (*setsizefun) (window, *sizep + delta, 0); |
2449 | } | |
2450 | else | |
2451 | { | |
2452 | register int delta1; | |
2453 | register int opht = (*sizefun) (parent); | |
2454 | ||
2455 | /* If trying to grow this window to or beyond size of the parent, | |
2456 | make delta1 so big that, on shrinking back down, | |
2457 | all the siblings end up with less than one line and are deleted. */ | |
2458 | if (opht <= *sizep + delta) | |
2459 | delta1 = opht * opht * 2; | |
2460 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2461 | lines to this window and to the parent, and then shrink | |
2462 | the parent back to its original size, the new proportional | |
2463 | size of this window will increase by delta. */ | |
2464 | else | |
2465 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2466 | ||
2467 | /* Add delta1 lines or columns to this window, and to the parent, | |
2468 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2469 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2470 | (*setsizefun) (window, *sizep + delta1, 0); |
2471 | ||
2472 | /* Squeeze out delta1 lines or columns from our parent, | |
2473 | shriking this window and siblings proportionately. | |
2474 | This brings parent back to correct size. | |
2475 | Delta1 was calculated so this makes this window the desired size, | |
2476 | taking it all out of the siblings. */ | |
2477 | (*setsizefun) (parent, opht, 0); | |
2478 | } | |
2479 | ||
d834a2e9 | 2480 | XSETFASTINT (p->last_modified, 0); |
7ab12479 JB |
2481 | } |
2482 | #undef MINSIZE | |
2483 | #undef CURBEG | |
2484 | #undef CURSIZE | |
2485 | ||
2486 | \f | |
2487 | /* Return number of lines of text (not counting mode line) in W. */ | |
2488 | ||
2489 | int | |
2490 | window_internal_height (w) | |
2491 | struct window *w; | |
2492 | { | |
2493 | int ht = XFASTINT (w->height); | |
2494 | ||
2495 | if (MINI_WINDOW_P (w)) | |
2496 | return ht; | |
2497 | ||
265a9e55 JB |
2498 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2499 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2500 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2501 | return ht - 1; |
2502 | ||
2503 | return ht; | |
2504 | } | |
2505 | ||
535e0b8e JB |
2506 | |
2507 | /* Return the number of columns in W. | |
a3c87d4e | 2508 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2509 | separating W from the sibling to its right. */ |
2510 | int | |
2511 | window_internal_width (w) | |
2512 | struct window *w; | |
2513 | { | |
2514 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
2515 | int left = XINT (w->left); | |
2516 | int width = XINT (w->width); | |
2517 | ||
2518 | /* If this window is flush against the right edge of the frame, its | |
2519 | internal width is its full width. */ | |
2520 | if (left + width >= FRAME_WIDTH (f)) | |
2521 | return width; | |
2522 | ||
2523 | /* If we are not flush right, then our rightmost columns are | |
2524 | occupied by some sort of separator. */ | |
2525 | ||
a3c87d4e JB |
2526 | /* Scroll bars occupy a few columns. */ |
2527 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2528 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2529 | |
2530 | /* The column of `|' characters separating side-by-side windows | |
2531 | occupies one column only. */ | |
2532 | return width - 1; | |
2533 | } | |
2534 | ||
2535 | ||
7ab12479 JB |
2536 | /* Scroll contents of window WINDOW up N lines. */ |
2537 | ||
2538 | void | |
f8026fd8 | 2539 | window_scroll (window, n, noerror) |
7ab12479 JB |
2540 | Lisp_Object window; |
2541 | int n; | |
f8026fd8 | 2542 | int noerror; |
7ab12479 JB |
2543 | { |
2544 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2545 | register int opoint = PT; |
7ab12479 JB |
2546 | register int pos; |
2547 | register int ht = window_internal_height (w); | |
2548 | register Lisp_Object tem; | |
2549 | int lose; | |
2550 | Lisp_Object bolp, nmoved; | |
2551 | ||
d834a2e9 | 2552 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2553 | tem = Fpos_visible_in_window_p (tem, window); |
2554 | ||
265a9e55 | 2555 | if (NILP (tem)) |
7ab12479 | 2556 | { |
cd2be1dd | 2557 | Fvertical_motion (make_number (- (ht / 2)), window); |
d834a2e9 | 2558 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2559 | Fset_marker (w->start, tem, w->buffer); |
2560 | w->force_start = Qt; | |
2561 | } | |
2562 | ||
2563 | SET_PT (marker_position (w->start)); | |
5ce7b543 | 2564 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2565 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2566 | pos = PT; |
7ab12479 JB |
2567 | bolp = Fbolp (); |
2568 | SET_PT (opoint); | |
2569 | ||
2570 | if (lose) | |
f8026fd8 JB |
2571 | { |
2572 | if (noerror) | |
2573 | return; | |
2574 | else | |
2575 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2576 | } | |
7ab12479 JB |
2577 | |
2578 | if (pos < ZV) | |
7ab12479 JB |
2579 | { |
2580 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2581 | w->start_at_line_beg = bolp; | |
2582 | w->update_mode_line = Qt; | |
d834a2e9 | 2583 | XSETFASTINT (w->last_modified, 0); |
7ab12479 JB |
2584 | if (pos > opoint) |
2585 | SET_PT (pos); | |
2586 | if (n < 0) | |
2587 | { | |
2588 | SET_PT (pos); | |
540b6aa0 | 2589 | tem = Fvertical_motion (make_number (ht), window); |
5ce7b543 | 2590 | if (PT > opoint || XFASTINT (tem) < ht) |
7ab12479 JB |
2591 | SET_PT (opoint); |
2592 | else | |
540b6aa0 | 2593 | Fvertical_motion (make_number (-1), window); |
7ab12479 JB |
2594 | } |
2595 | } | |
2596 | else | |
f8026fd8 JB |
2597 | { |
2598 | if (noerror) | |
2599 | return; | |
2600 | else | |
2601 | Fsignal (Qend_of_buffer, Qnil); | |
2602 | } | |
7ab12479 JB |
2603 | } |
2604 | \f | |
2605 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2606 | ||
2607 | static void | |
2608 | scroll_command (n, direction) | |
2609 | register Lisp_Object n; | |
2610 | int direction; | |
2611 | { | |
2612 | register int defalt; | |
2613 | int count = specpdl_ptr - specpdl; | |
2614 | ||
95605e15 JB |
2615 | /* If selected window's buffer isn't current, make it current for the moment. |
2616 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2617 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2618 | { |
2619 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2620 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2621 | } | |
7ab12479 JB |
2622 | |
2623 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2624 | - next_screen_context_lines); | |
2625 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2626 | ||
265a9e55 | 2627 | if (NILP (n)) |
f8026fd8 | 2628 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2629 | else if (EQ (n, Qminus)) |
f8026fd8 | 2630 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2631 | else |
2632 | { | |
2633 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2634 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2635 | } |
95605e15 JB |
2636 | |
2637 | unbind_to (count, Qnil); | |
7ab12479 JB |
2638 | } |
2639 | ||
2640 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2641 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2642 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2643 | Negative ARG means scroll downward.\n\ |
7ab12479 JB |
2644 | When calling from a program, supply a number as argument or nil.") |
2645 | (n) | |
2646 | Lisp_Object n; | |
2647 | { | |
2648 | scroll_command (n, 1); | |
2649 | return Qnil; | |
2650 | } | |
2651 | ||
2652 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2653 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2654 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2655 | Negative ARG means scroll upward.\n\ |
7ab12479 JB |
2656 | When calling from a program, supply a number as argument or nil.") |
2657 | (n) | |
2658 | Lisp_Object n; | |
2659 | { | |
2660 | scroll_command (n, -1); | |
2661 | return Qnil; | |
2662 | } | |
ccd0664b RS |
2663 | \f |
2664 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
2665 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 2666 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
2667 | specifies the window.\n\ |
2668 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
2669 | showing that buffer is used.") | |
eb16ec06 | 2670 | () |
7ab12479 | 2671 | { |
ccd0664b | 2672 | Lisp_Object window; |
7ab12479 JB |
2673 | |
2674 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2675 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2676 | window = Vminibuf_scroll_window; |
2677 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2678 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2679 | { |
2680 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2681 | if (NILP (window)) |
7ab12479 JB |
2682 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2683 | } | |
2684 | else | |
dbc4e1c1 JB |
2685 | { |
2686 | /* Nothing specified; look for a neighboring window on the same | |
2687 | frame. */ | |
2688 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2689 | ||
2690 | if (EQ (window, selected_window)) | |
2691 | /* That didn't get us anywhere; look for a window on another | |
2692 | visible frame. */ | |
2693 | do | |
2694 | window = Fnext_window (window, Qnil, Qt); | |
2695 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2696 | && ! EQ (window, selected_window)); | |
2697 | } | |
2698 | ||
605be8af | 2699 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2700 | |
2701 | if (EQ (window, selected_window)) | |
2702 | error ("There is no other window"); | |
2703 | ||
ccd0664b RS |
2704 | return window; |
2705 | } | |
2706 | ||
2707 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2708 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
2709 | The next window is the one below the current one; or the one at the top\n\ | |
2710 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
2711 | When calling from a program, supply a number as argument or nil.\n\ | |
2712 | \n\ | |
2713 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
2714 | specifies the window to scroll.\n\ | |
2715 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2716 | showing that buffer, popping the buffer up if necessary.") | |
2717 | (n) | |
2718 | register Lisp_Object n; | |
2719 | { | |
2720 | register Lisp_Object window; | |
2f787aa3 | 2721 | register int defalt; |
ccd0664b RS |
2722 | register struct window *w; |
2723 | register int count = specpdl_ptr - specpdl; | |
2724 | ||
2725 | window = Fother_window_for_scrolling (); | |
2726 | ||
7ab12479 | 2727 | w = XWINDOW (window); |
2f787aa3 KH |
2728 | defalt = window_internal_height (w) - next_screen_context_lines; |
2729 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
2730 | |
2731 | /* Don't screw up if window_scroll gets an error. */ | |
2732 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2733 | ||
2734 | Fset_buffer (w->buffer); | |
2735 | SET_PT (marker_position (w->pointm)); | |
2736 | ||
265a9e55 | 2737 | if (NILP (n)) |
2f787aa3 | 2738 | window_scroll (window, defalt, 1); |
7ab12479 | 2739 | else if (EQ (n, Qminus)) |
2f787aa3 | 2740 | window_scroll (window, -defalt, 1); |
7ab12479 JB |
2741 | else |
2742 | { | |
017b2bad | 2743 | if (CONSP (n)) |
7ab12479 JB |
2744 | n = Fcar (n); |
2745 | CHECK_NUMBER (n, 0); | |
f8026fd8 | 2746 | window_scroll (window, XINT (n), 1); |
7ab12479 JB |
2747 | } |
2748 | ||
5ce7b543 | 2749 | Fset_marker (w->pointm, make_number (PT), Qnil); |
f4e7b2c2 | 2750 | unbind_to (count, Qnil); |
7ab12479 JB |
2751 | |
2752 | return Qnil; | |
2753 | } | |
2754 | \f | |
644b477c | 2755 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
2756 | "Scroll selected window display ARG columns left.\n\ |
2757 | Default for ARG is window width minus 2.") | |
2758 | (arg) | |
2759 | register Lisp_Object arg; | |
2760 | { | |
2761 | ||
265a9e55 | 2762 | if (NILP (arg)) |
d834a2e9 | 2763 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2764 | else |
2765 | arg = Fprefix_numeric_value (arg); | |
2766 | ||
2767 | return | |
2768 | Fset_window_hscroll (selected_window, | |
2769 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2770 | + XINT (arg))); | |
2771 | } | |
2772 | ||
644b477c | 2773 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
2774 | "Scroll selected window display ARG columns right.\n\ |
2775 | Default for ARG is window width minus 2.") | |
2776 | (arg) | |
2777 | register Lisp_Object arg; | |
2778 | { | |
265a9e55 | 2779 | if (NILP (arg)) |
d834a2e9 | 2780 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2781 | else |
2782 | arg = Fprefix_numeric_value (arg); | |
2783 | ||
2784 | return | |
2785 | Fset_window_hscroll (selected_window, | |
2786 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2787 | - XINT (arg))); | |
2788 | } | |
2789 | ||
2790 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2791 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2792 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e JB |
2793 | Just C-u as prefix means put point in the center of the window.\n\ |
2794 | No arg (i.e., it is nil) erases the entire frame and then\n\ | |
2795 | redraws with point in the center of the current window.") | |
7ab12479 JB |
2796 | (n) |
2797 | register Lisp_Object n; | |
2798 | { | |
2799 | register struct window *w = XWINDOW (selected_window); | |
2800 | register int ht = window_internal_height (w); | |
113d9015 | 2801 | struct position pos; |
7ab12479 | 2802 | |
265a9e55 | 2803 | if (NILP (n)) |
7ab12479 | 2804 | { |
44fa5b1e | 2805 | extern int frame_garbaged; |
7ab12479 | 2806 | |
44fa5b1e | 2807 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
d834a2e9 | 2808 | XSETFASTINT (n, ht / 2); |
7ab12479 | 2809 | } |
017b2bad | 2810 | else if (CONSP (n)) /* Just C-u. */ |
7ab12479 | 2811 | { |
d834a2e9 | 2812 | XSETFASTINT (n, ht / 2); |
7ab12479 JB |
2813 | } |
2814 | else | |
2815 | { | |
2816 | n = Fprefix_numeric_value (n); | |
2817 | CHECK_NUMBER (n, 0); | |
2818 | } | |
2819 | ||
2820 | if (XINT (n) < 0) | |
2821 | XSETINT (n, XINT (n) + ht); | |
2822 | ||
6e55cbc2 | 2823 | pos = *vmotion (point, - XINT (n), w); |
7ab12479 | 2824 | |
113d9015 KH |
2825 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
2826 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
2827 | || FETCH_CHAR (pos.bufpos - 1) == '\n') | |
2828 | ? Qt : Qnil); | |
7ab12479 JB |
2829 | w->force_start = Qt; |
2830 | ||
2831 | return Qnil; | |
2832 | } | |
2833 | \f | |
2834 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2835 | 1, 1, "P", | |
2836 | "Position point relative to window.\n\ | |
19e3bf0a | 2837 | With no argument, position point at center of window.\n\ |
44fa5b1e | 2838 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2839 | negative means relative to bottom of window.") |
2840 | (arg) | |
2841 | register Lisp_Object arg; | |
2842 | { | |
2843 | register struct window *w = XWINDOW (selected_window); | |
2844 | register int height = window_internal_height (w); | |
2845 | register int start; | |
540b6aa0 | 2846 | Lisp_Object window; |
7ab12479 | 2847 | |
265a9e55 | 2848 | if (NILP (arg)) |
d834a2e9 | 2849 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
2850 | else |
2851 | { | |
2852 | arg = Fprefix_numeric_value (arg); | |
2853 | if (XINT (arg) < 0) | |
2854 | XSETINT (arg, XINT (arg) + height); | |
2855 | } | |
2856 | ||
2857 | start = marker_position (w->start); | |
74112613 | 2858 | XSETWINDOW (window, w); |
7ab12479 JB |
2859 | if (start < BEGV || start > ZV) |
2860 | { | |
cd2be1dd | 2861 | Fvertical_motion (make_number (- (height / 2)), window); |
5ce7b543 | 2862 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
2863 | w->start_at_line_beg = Fbolp (); |
2864 | w->force_start = Qt; | |
2865 | } | |
2866 | else | |
2867 | SET_PT (start); | |
2868 | ||
540b6aa0 | 2869 | return Fvertical_motion (arg, window); |
7ab12479 JB |
2870 | } |
2871 | \f | |
2872 | struct save_window_data | |
2873 | { | |
2874 | int size_from_Lisp_Vector_struct; | |
2875 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
8f6ea2e9 | 2876 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 2877 | Lisp_Object selected_frame; |
7ab12479 JB |
2878 | Lisp_Object current_window; |
2879 | Lisp_Object current_buffer; | |
2880 | Lisp_Object minibuf_scroll_window; | |
2881 | Lisp_Object root_window; | |
bdc727bf | 2882 | Lisp_Object focus_frame; |
756b6edc RS |
2883 | /* Record the values of window-min-width and window-min-height |
2884 | so that window sizes remain consistent with them. */ | |
2885 | Lisp_Object min_width, min_height; | |
7ab12479 JB |
2886 | /* A vector, interpreted as a struct saved_window */ |
2887 | Lisp_Object saved_windows; | |
2888 | }; | |
ff06df24 | 2889 | |
7ab12479 JB |
2890 | /* This is saved as a Lisp_Vector */ |
2891 | struct saved_window | |
2892 | { | |
2893 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2894 | int size_from_Lisp_Vector_struct; | |
2895 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2896 | ||
2897 | Lisp_Object window; | |
2898 | Lisp_Object buffer, start, pointm, mark; | |
2899 | Lisp_Object left, top, width, height, hscroll; | |
2900 | Lisp_Object parent, prev; | |
2901 | Lisp_Object start_at_line_beg; | |
2902 | Lisp_Object display_table; | |
2903 | }; | |
2904 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2905 | ||
2906 | #define SAVED_WINDOW_N(swv,n) \ | |
2907 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2908 | ||
2909 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2910 | "T if OBJECT is a window-configration object.") | |
2911 | (obj) | |
2912 | Lisp_Object obj; | |
2913 | { | |
017b2bad | 2914 | if (WINDOW_CONFIGURATIONP (obj)) |
7ab12479 JB |
2915 | return Qt; |
2916 | return Qnil; | |
2917 | } | |
2918 | ||
2919 | ||
d5b2799e RS |
2920 | DEFUN ("set-window-configuration", Fset_window_configuration, |
2921 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
2922 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
2923 | CONFIGURATION must be a value previously returned\n\ | |
2924 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
2925 | (configuration) |
2926 | Lisp_Object configuration; | |
7ab12479 | 2927 | { |
7ab12479 JB |
2928 | register struct save_window_data *data; |
2929 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 2930 | Lisp_Object new_current_buffer; |
fd482be5 | 2931 | Lisp_Object frame; |
44fa5b1e | 2932 | FRAME_PTR f; |
7ab12479 | 2933 | |
017b2bad | 2934 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 2935 | { |
2f83aebe JB |
2936 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
2937 | configuration); | |
7ab12479 JB |
2938 | } |
2939 | ||
2f83aebe | 2940 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
2941 | saved_windows = XVECTOR (data->saved_windows); |
2942 | ||
7ab12479 | 2943 | new_current_buffer = data->current_buffer; |
265a9e55 | 2944 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2945 | new_current_buffer = Qnil; |
2946 | ||
fd482be5 JB |
2947 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
2948 | f = XFRAME (frame); | |
9ace597f | 2949 | |
fd482be5 JB |
2950 | /* If f is a dead frame, don't bother rebuilding its window tree. |
2951 | However, there is other stuff we should still try to do below. */ | |
2952 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 2953 | { |
fd482be5 JB |
2954 | register struct window *w; |
2955 | register struct saved_window *p; | |
2956 | int k; | |
2957 | ||
2958 | /* If the frame has been resized since this window configuration was | |
2959 | made, we change the frame to the size specified in the | |
2960 | configuration, restore the configuration, and then resize it | |
2961 | back. We keep track of the prevailing height in these variables. */ | |
2962 | int previous_frame_height = FRAME_HEIGHT (f); | |
2963 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 2964 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
2965 | |
2966 | if (XFASTINT (data->frame_height) != previous_frame_height | |
2967 | || XFASTINT (data->frame_width) != previous_frame_width) | |
2968 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
217f2871 | 2969 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
2970 | if (XFASTINT (data->frame_menu_bar_lines) |
2971 | != previous_frame_menu_bar_lines) | |
2972 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
217f2871 | 2973 | #endif |
fd482be5 JB |
2974 | |
2975 | windows_or_buffers_changed++; | |
29aeee73 | 2976 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 2977 | |
756b6edc RS |
2978 | /* Temporarily avoid any problems with windows that are smaller |
2979 | than they are supposed to be. */ | |
2980 | window_min_height = 1; | |
2981 | window_min_width = 1; | |
2982 | ||
fd482be5 JB |
2983 | /* Kludge Alert! |
2984 | Mark all windows now on frame as "deleted". | |
2985 | Restoring the new configuration "undeletes" any that are in it. | |
2986 | ||
2987 | Save their current buffers in their height fields, since we may | |
2988 | need it later, if a buffer saved in the configuration is now | |
2989 | dead. */ | |
2990 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
2991 | ||
2992 | for (k = 0; k < saved_windows->size; k++) | |
2993 | { | |
2994 | p = SAVED_WINDOW_N (saved_windows, k); | |
2995 | w = XWINDOW (p->window); | |
2996 | w->next = Qnil; | |
7ab12479 | 2997 | |
fd482be5 JB |
2998 | if (!NILP (p->parent)) |
2999 | w->parent = SAVED_WINDOW_N (saved_windows, | |
3000 | XFASTINT (p->parent))->window; | |
3001 | else | |
3002 | w->parent = Qnil; | |
7ab12479 | 3003 | |
fd482be5 | 3004 | if (!NILP (p->prev)) |
7ab12479 | 3005 | { |
fd482be5 JB |
3006 | w->prev = SAVED_WINDOW_N (saved_windows, |
3007 | XFASTINT (p->prev))->window; | |
3008 | XWINDOW (w->prev)->next = p->window; | |
3009 | } | |
3010 | else | |
3011 | { | |
3012 | w->prev = Qnil; | |
3013 | if (!NILP (w->parent)) | |
3014 | { | |
3015 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
3016 | { | |
3017 | XWINDOW (w->parent)->vchild = p->window; | |
3018 | XWINDOW (w->parent)->hchild = Qnil; | |
3019 | } | |
3020 | else | |
3021 | { | |
3022 | XWINDOW (w->parent)->hchild = p->window; | |
3023 | XWINDOW (w->parent)->vchild = Qnil; | |
3024 | } | |
3025 | } | |
3026 | } | |
3027 | ||
3028 | /* If we squirreled away the buffer in the window's height, | |
3029 | restore it now. */ | |
017b2bad | 3030 | if (BUFFERP (w->height)) |
fd482be5 JB |
3031 | w->buffer = w->height; |
3032 | w->left = p->left; | |
3033 | w->top = p->top; | |
3034 | w->width = p->width; | |
3035 | w->height = p->height; | |
3036 | w->hscroll = p->hscroll; | |
3037 | w->display_table = p->display_table; | |
d834a2e9 | 3038 | XSETFASTINT (w->last_modified, 0); |
fd482be5 JB |
3039 | |
3040 | /* Reinstall the saved buffer and pointers into it. */ | |
3041 | if (NILP (p->buffer)) | |
3042 | w->buffer = p->buffer; | |
3043 | else | |
3044 | { | |
3045 | if (!NILP (XBUFFER (p->buffer)->name)) | |
3046 | /* If saved buffer is alive, install it. */ | |
3047 | { | |
3048 | w->buffer = p->buffer; | |
3049 | w->start_at_line_beg = p->start_at_line_beg; | |
3050 | set_marker_restricted (w->start, | |
3051 | Fmarker_position (p->start), | |
3052 | w->buffer); | |
3053 | set_marker_restricted (w->pointm, | |
3054 | Fmarker_position (p->pointm), | |
3055 | w->buffer); | |
3056 | Fset_marker (XBUFFER (w->buffer)->mark, | |
3057 | Fmarker_position (p->mark), w->buffer); | |
3058 | ||
3059 | /* As documented in Fcurrent_window_configuration, don't | |
3060 | save the location of point in the buffer which was current | |
3061 | when the window configuration was recorded. */ | |
6b54027b RS |
3062 | if (!EQ (p->buffer, new_current_buffer) |
3063 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
3064 | Fgoto_char (w->pointm); |
3065 | } | |
52a68e98 RS |
3066 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
3067 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 3068 | { |
fd482be5 JB |
3069 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
3070 | /* This will set the markers to beginning of visible | |
3071 | range. */ | |
3072 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
3073 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
3074 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3075 | } |
3076 | else | |
fd482be5 | 3077 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 3078 | are real. */ |
7ab12479 | 3079 | { |
fd482be5 JB |
3080 | /* Set window markers at start of visible range. */ |
3081 | if (XMARKER (w->start)->buffer == 0) | |
3082 | set_marker_restricted (w->start, make_number (0), | |
3083 | w->buffer); | |
3084 | if (XMARKER (w->pointm)->buffer == 0) | |
3085 | set_marker_restricted (w->pointm, | |
3086 | (make_number | |
3087 | (BUF_PT (XBUFFER (w->buffer)))), | |
3088 | w->buffer); | |
3089 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3090 | } |
3091 | } | |
3092 | } | |
9ace597f | 3093 | |
fd482be5 JB |
3094 | FRAME_ROOT_WINDOW (f) = data->root_window; |
3095 | Fselect_window (data->current_window); | |
7ab12479 | 3096 | |
fd482be5 | 3097 | #ifdef MULTI_FRAME |
db269683 | 3098 | if (NILP (data->focus_frame) |
017b2bad | 3099 | || (FRAMEP (data->focus_frame) |
db269683 JB |
3100 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
3101 | Fredirect_frame_focus (frame, data->focus_frame); | |
fd482be5 | 3102 | #endif |
7ab12479 | 3103 | |
fd482be5 JB |
3104 | #if 0 /* I don't understand why this is needed, and it causes problems |
3105 | when the frame's old selected window has been deleted. */ | |
3106 | #ifdef MULTI_FRAME | |
3107 | if (f != selected_frame && ! FRAME_TERMCAP_P (f)) | |
9a7c6fc3 RS |
3108 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
3109 | Qnil, 0); | |
fd482be5 JB |
3110 | #endif |
3111 | #endif | |
3112 | ||
3113 | /* Set the screen height to the value it had before this function. */ | |
3114 | if (previous_frame_height != FRAME_HEIGHT (f) | |
3115 | || previous_frame_width != FRAME_WIDTH (f)) | |
3116 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
3117 | 0, 0); | |
217f2871 | 3118 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
3119 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
3120 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
217f2871 | 3121 | #endif |
fd482be5 | 3122 | } |
bdc727bf | 3123 | |
756b6edc RS |
3124 | /* Restore the minimum heights recorded in the configuration. */ |
3125 | window_min_height = XINT (data->min_height); | |
3126 | window_min_width = XINT (data->min_width); | |
3127 | ||
ad854249 | 3128 | #ifdef MULTI_FRAME |
bdc727bf | 3129 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 3130 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
3131 | selected window too, but that doesn't make the call to |
3132 | Fselect_window above totally superfluous; it still sets f's | |
3133 | selected window. */ | |
fd482be5 | 3134 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
9a7c6fc3 | 3135 | do_switch_frame (data->selected_frame, Qnil, 0); |
ad854249 | 3136 | #endif |
bdc727bf JB |
3137 | |
3138 | if (!NILP (new_current_buffer)) | |
3139 | Fset_buffer (new_current_buffer); | |
3140 | ||
7ab12479 JB |
3141 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3142 | return (Qnil); | |
3143 | } | |
3144 | ||
44fa5b1e | 3145 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3146 | by setting their buffers to nil. */ |
3147 | ||
fd482be5 | 3148 | void |
7ab12479 JB |
3149 | delete_all_subwindows (w) |
3150 | register struct window *w; | |
3151 | { | |
265a9e55 | 3152 | if (!NILP (w->next)) |
7ab12479 | 3153 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3154 | if (!NILP (w->vchild)) |
7ab12479 | 3155 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3156 | if (!NILP (w->hchild)) |
7ab12479 | 3157 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3158 | |
3159 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3160 | ||
3161 | /* We set all three of these fields to nil, to make sure that we can | |
3162 | distinguish this dead window from any live window. Live leaf | |
3163 | windows will have buffer set, and combination windows will have | |
3164 | vchild or hchild set. */ | |
3165 | w->buffer = Qnil; | |
3166 | w->vchild = Qnil; | |
3167 | w->hchild = Qnil; | |
7ab12479 JB |
3168 | } |
3169 | \f | |
3170 | static int | |
3171 | count_windows (window) | |
3172 | register struct window *window; | |
3173 | { | |
3174 | register int count = 1; | |
265a9e55 | 3175 | if (!NILP (window->next)) |
7ab12479 | 3176 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3177 | if (!NILP (window->vchild)) |
7ab12479 | 3178 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3179 | if (!NILP (window->hchild)) |
7ab12479 JB |
3180 | count += count_windows (XWINDOW (window->hchild)); |
3181 | return count; | |
3182 | } | |
3183 | ||
3184 | static int | |
3185 | save_window_save (window, vector, i) | |
3186 | Lisp_Object window; | |
3187 | struct Lisp_Vector *vector; | |
3188 | int i; | |
3189 | { | |
3190 | register struct saved_window *p; | |
3191 | register struct window *w; | |
3192 | register Lisp_Object tem; | |
3193 | ||
265a9e55 | 3194 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3195 | { |
3196 | p = SAVED_WINDOW_N (vector, i); | |
3197 | w = XWINDOW (window); | |
3198 | ||
d834a2e9 | 3199 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3200 | p->window = window; |
3201 | p->buffer = w->buffer; | |
3202 | p->left = w->left; | |
3203 | p->top = w->top; | |
3204 | p->width = w->width; | |
3205 | p->height = w->height; | |
3206 | p->hscroll = w->hscroll; | |
3207 | p->display_table = w->display_table; | |
265a9e55 | 3208 | if (!NILP (w->buffer)) |
7ab12479 JB |
3209 | { |
3210 | /* Save w's value of point in the window configuration. | |
3211 | If w is the selected window, then get the value of point | |
3212 | from the buffer; pointm is garbage in the selected window. */ | |
3213 | if (EQ (window, selected_window)) | |
3214 | { | |
3215 | p->pointm = Fmake_marker (); | |
3216 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
3217 | w->buffer); | |
3218 | } | |
3219 | else | |
3220 | p->pointm = Fcopy_marker (w->pointm); | |
3221 | ||
3222 | p->start = Fcopy_marker (w->start); | |
3223 | p->start_at_line_beg = w->start_at_line_beg; | |
3224 | ||
3225 | tem = XBUFFER (w->buffer)->mark; | |
3226 | p->mark = Fcopy_marker (tem); | |
3227 | } | |
3228 | else | |
3229 | { | |
3230 | p->pointm = Qnil; | |
3231 | p->start = Qnil; | |
3232 | p->mark = Qnil; | |
3233 | p->start_at_line_beg = Qnil; | |
3234 | } | |
3235 | ||
265a9e55 | 3236 | if (NILP (w->parent)) |
7ab12479 JB |
3237 | p->parent = Qnil; |
3238 | else | |
3239 | p->parent = XWINDOW (w->parent)->temslot; | |
3240 | ||
265a9e55 | 3241 | if (NILP (w->prev)) |
7ab12479 JB |
3242 | p->prev = Qnil; |
3243 | else | |
3244 | p->prev = XWINDOW (w->prev)->temslot; | |
3245 | ||
265a9e55 | 3246 | if (!NILP (w->vchild)) |
7ab12479 | 3247 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3248 | if (!NILP (w->hchild)) |
7ab12479 JB |
3249 | i = save_window_save (w->hchild, vector, i); |
3250 | } | |
3251 | ||
3252 | return i; | |
3253 | } | |
3254 | ||
3255 | DEFUN ("current-window-configuration", | |
43bad991 | 3256 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
3257 | "Return an object representing the current window configuration of FRAME.\n\ |
3258 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3259 | This describes the number of windows, their sizes and current buffers,\n\ |
3260 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3261 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3262 | its value is -not- saved.\n\ |
3263 | This also records the currently selected frame, and FRAME's focus\n\ | |
3264 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3265 | (frame) |
3266 | Lisp_Object frame; | |
7ab12479 JB |
3267 | { |
3268 | register Lisp_Object tem; | |
3269 | register int n_windows; | |
3270 | register struct save_window_data *data; | |
da2792e0 | 3271 | register struct Lisp_Vector *vec; |
7ab12479 | 3272 | register int i; |
44fa5b1e | 3273 | FRAME_PTR f; |
43bad991 | 3274 | |
44fa5b1e JB |
3275 | if (NILP (frame)) |
3276 | f = selected_frame; | |
43bad991 JB |
3277 | else |
3278 | { | |
44fa5b1e JB |
3279 | CHECK_LIVE_FRAME (frame, 0); |
3280 | f = XFRAME (frame); | |
43bad991 | 3281 | } |
7ab12479 | 3282 | |
44fa5b1e | 3283 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3284 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3285 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3286 | vec->contents[i] = Qnil; | |
3287 | vec->size = VECSIZE (struct save_window_data); | |
3288 | data = (struct save_window_data *)vec; | |
3289 | ||
d834a2e9 KH |
3290 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3291 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3292 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
ad854249 | 3293 | #ifdef MULTI_FRAME |
74112613 | 3294 | XSETFRAME (data->selected_frame, selected_frame); |
ad854249 | 3295 | #endif |
44fa5b1e | 3296 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3297 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3298 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3299 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3300 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3301 | XSETINT (data->min_height, window_min_height); |
3302 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3303 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3304 | data->saved_windows = tem; | |
3305 | for (i = 0; i < n_windows; i++) | |
3306 | XVECTOR (tem)->contents[i] | |
3307 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3308 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3309 | XVECTOR (tem), 0); |
74112613 | 3310 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3311 | return (tem); |
3312 | } | |
3313 | ||
3314 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3315 | 0, UNEVALLED, 0, | |
3316 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3317 | Restore which buffer appears in which window, where display starts,\n\ |
3318 | and the value of point and mark for each window.\n\ | |
3319 | Also restore which buffer is current.\n\ | |
3320 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3321 | Does not restore the value of point in current buffer.") |
3322 | (args) | |
3323 | Lisp_Object args; | |
3324 | { | |
3325 | register Lisp_Object val; | |
3326 | register int count = specpdl_ptr - specpdl; | |
3327 | ||
3328 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3329 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3330 | val = Fprogn (args); |
3331 | return unbind_to (count, val); | |
3332 | } | |
3333 | \f | |
3334 | init_window_once () | |
3335 | { | |
44fa5b1e JB |
3336 | #ifdef MULTI_FRAME |
3337 | selected_frame = make_terminal_frame (); | |
bc6c324f | 3338 | XSETFRAME (Vterminal_frame, selected_frame); |
44fa5b1e JB |
3339 | minibuf_window = selected_frame->minibuffer_window; |
3340 | selected_window = selected_frame->selected_window; | |
3341 | last_nonminibuf_frame = selected_frame; | |
3342 | #else /* not MULTI_FRAME */ | |
7ab12479 JB |
3343 | extern Lisp_Object get_minibuffer (); |
3344 | ||
87485d6f MW |
3345 | selected_frame = last_nonminibuf_frame = &the_only_frame; |
3346 | ||
95605e15 | 3347 | minibuf_window = make_window (); |
4b206065 | 3348 | FRAME_ROOT_WINDOW (selected_frame) = make_window (); |
7ab12479 | 3349 | |
44fa5b1e JB |
3350 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->next = minibuf_window; |
3351 | XWINDOW (minibuf_window)->prev = FRAME_ROOT_WINDOW (selected_frame); | |
4b206065 | 3352 | XWINDOW (minibuf_window)->mini_p = Qt; |
7ab12479 JB |
3353 | |
3354 | /* These values 9 and 10 are arbitrary, | |
3355 | just so that there is "something there." | |
3356 | Correct values are put in in init_xdisp */ | |
3357 | ||
d834a2e9 KH |
3358 | XSETFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->width, 10); |
3359 | XSETFASTINT (XWINDOW (minibuf_window)->width, 10); | |
7ab12479 | 3360 | |
d834a2e9 KH |
3361 | XSETFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->height, 9); |
3362 | XSETFASTINT (XWINDOW (minibuf_window)->top, 9); | |
3363 | XSETFASTINT (XWINDOW (minibuf_window)->height, 1); | |
7ab12479 JB |
3364 | |
3365 | /* Prevent error in Fset_window_buffer. */ | |
44fa5b1e | 3366 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->buffer = Qt; |
7ab12479 JB |
3367 | XWINDOW (minibuf_window)->buffer = Qt; |
3368 | ||
3369 | /* Now set them up for real. */ | |
44fa5b1e | 3370 | Fset_window_buffer (FRAME_ROOT_WINDOW (selected_frame), |
e5d77022 | 3371 | Fcurrent_buffer ()); |
7ab12479 JB |
3372 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); |
3373 | ||
44fa5b1e | 3374 | selected_window = FRAME_ROOT_WINDOW (selected_frame); |
1d8d96fa JB |
3375 | /* Make sure this window seems more recently used than |
3376 | a newly-created, never-selected window. Increment | |
3377 | window_select_count so the first selection ever will get | |
3378 | something newer than this. */ | |
d834a2e9 | 3379 | XSETFASTINT (XWINDOW (selected_window)->use_time, ++window_select_count); |
44fa5b1e | 3380 | #endif /* not MULTI_FRAME */ |
7ab12479 JB |
3381 | } |
3382 | ||
3383 | syms_of_window () | |
3384 | { | |
3385 | Qwindowp = intern ("windowp"); | |
3386 | staticpro (&Qwindowp); | |
3387 | ||
806b4d9b JB |
3388 | Qwindow_live_p = intern ("window-live-p"); |
3389 | staticpro (&Qwindow_live_p); | |
605be8af | 3390 | |
2cccc823 | 3391 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
3392 | staticpro (&Qtemp_buffer_show_hook); |
3393 | ||
2f83aebe | 3394 | #ifndef MULTI_FRAME |
7ab12479 JB |
3395 | /* Make sure all windows get marked */ |
3396 | staticpro (&minibuf_window); | |
2f83aebe | 3397 | #endif |
7ab12479 JB |
3398 | |
3399 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
3400 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3401 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
3402 | Used by `with-output-to-temp-buffer'.\n\ |
3403 | If this function is used, then it must do the entire job of showing\n\ | |
3404 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
3405 | Vtemp_buffer_show_function = Qnil; |
3406 | ||
3407 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3408 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3409 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3410 | that the currently selected window is not acceptable.\n\ | |
3411 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3412 | work using this function."); | |
3413 | Vdisplay_buffer_function = Qnil; | |
3414 | ||
7ab12479 JB |
3415 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3416 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3417 | Vminibuf_scroll_window = Qnil; | |
3418 | ||
3419 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3420 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3421 | Vother_window_scroll_buffer = Qnil; | |
3422 | ||
44fa5b1e | 3423 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3424 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3425 | pop_up_frames = 0; |
7ab12479 | 3426 | |
44fa5b1e | 3427 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3428 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3429 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3430 | \n\ |
44fa5b1e JB |
3431 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3432 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3433 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3434 | |
a90712c2 RS |
3435 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3436 | "*List of buffer names that should have their own special frames.\n\ | |
3437 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3438 | using `special-display-function'.\n\ |
3548e138 RS |
3439 | \n\ |
3440 | An element of the list can be a cons cell instead of just a string.\n\ | |
3441 | Then the car should be a buffer name, and the cdr specifies frame\n\ | |
3442 | parameters for creating the frame for that buffer.\n\ | |
3443 | More precisely, the cdr is passed as the second argument to\n\ | |
3444 | the function found in `special-display-function', when making that frame.\n\ | |
0a952b57 | 3445 | See also `special-display-regexps'."); |
a90712c2 RS |
3446 | Vspecial_display_buffer_names = Qnil; |
3447 | ||
3448 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3449 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3450 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3451 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3452 | using `special-display-function'.\n\ |
3548e138 RS |
3453 | \n\ |
3454 | An element of the list can be a cons cell instead of just a string.\n\ | |
3455 | Then the car should be the regexp, and the cdr specifies frame\n\ | |
3456 | parameters for creating the frame for buffers that match.\n\ | |
3457 | More precisely, the cdr is passed as the second argument to\n\ | |
3458 | the function found in `special-display-function', when making that frame.\n\ | |
0a952b57 | 3459 | See also `special-display-buffer-names'."); |
a90712c2 RS |
3460 | Vspecial_display_regexps = Qnil; |
3461 | ||
3462 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3463 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3464 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3465 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3466 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3467 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3468 | \n\ |
3469 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3470 | or matches a regexp in `special-display-regexps'."); | |
3471 | Vspecial_display_function = Qnil; | |
3472 | ||
855d8627 RS |
3473 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
3474 | "*List of buffer names that should appear in the selected window.\n\ | |
3475 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
3476 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 3477 | in some other window.\n\ |
855d8627 RS |
3478 | \n\ |
3479 | An element of the list can be a cons cell instead of just a string.\n\ | |
3480 | Then the car must be a string, which specifies the buffer name.\n\ | |
3481 | This is for compatibility with `special-display-buffer-names';\n\ | |
3482 | the cdr of the cons cell is ignored.\n\ | |
3483 | \n\ | |
3484 | See also `same-window-regexps'."); | |
3485 | Vsame_window_buffer_names = Qnil; | |
3486 | ||
3487 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
3488 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
3489 | If a buffer name matches one of these regexps, then displaying it\n\ | |
3490 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
3491 | in the selected window, rather than making it appear in some other window.\n\ | |
3492 | \n\ | |
3493 | An element of the list can be a cons cell instead of just a string.\n\ | |
3494 | Then the car must be a string, which specifies the buffer name.\n\ | |
3495 | This is for compatibility with `special-display-buffer-names';\n\ | |
3496 | the cdr of the cons cell is ignored.\n\ | |
3497 | \n\ | |
3498 | See also `same-window-buffer-names'."); | |
3499 | Vsame_window_regexps = Qnil; | |
3500 | ||
7ab12479 JB |
3501 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3502 | "*Non-nil means display-buffer should make new windows."); | |
3503 | pop_up_windows = 1; | |
3504 | ||
3505 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3506 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3507 | next_screen_context_lines = 2; | |
3508 | ||
3509 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3510 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3511 | If there is only one window, it is split regardless of this value."); | |
3512 | split_height_threshold = 500; | |
3513 | ||
3514 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3515 | "*Delete any window less than this tall (including its mode line)."); | |
3516 | window_min_height = 4; | |
3517 | ||
3518 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3519 | "*Delete any window less than this wide."); | |
3520 | window_min_width = 10; | |
3521 | ||
3522 | defsubr (&Sselected_window); | |
3523 | defsubr (&Sminibuffer_window); | |
3524 | defsubr (&Swindow_minibuffer_p); | |
3525 | defsubr (&Swindowp); | |
806b4d9b | 3526 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3527 | defsubr (&Spos_visible_in_window_p); |
3528 | defsubr (&Swindow_buffer); | |
3529 | defsubr (&Swindow_height); | |
3530 | defsubr (&Swindow_width); | |
3531 | defsubr (&Swindow_hscroll); | |
3532 | defsubr (&Sset_window_hscroll); | |
3533 | defsubr (&Swindow_edges); | |
d5783c40 JB |
3534 | defsubr (&Scoordinates_in_window_p); |
3535 | defsubr (&Swindow_at); | |
7ab12479 JB |
3536 | defsubr (&Swindow_point); |
3537 | defsubr (&Swindow_start); | |
3538 | defsubr (&Swindow_end); | |
3539 | defsubr (&Sset_window_point); | |
3540 | defsubr (&Sset_window_start); | |
3541 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3542 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3543 | defsubr (&Swindow_display_table); |
3544 | defsubr (&Sset_window_display_table); | |
3545 | defsubr (&Snext_window); | |
3546 | defsubr (&Sprevious_window); | |
3547 | defsubr (&Sother_window); | |
3548 | defsubr (&Sget_lru_window); | |
3549 | defsubr (&Sget_largest_window); | |
3550 | defsubr (&Sget_buffer_window); | |
3551 | defsubr (&Sdelete_other_windows); | |
3552 | defsubr (&Sdelete_windows_on); | |
3553 | defsubr (&Sreplace_buffer_in_windows); | |
3554 | defsubr (&Sdelete_window); | |
3555 | defsubr (&Sset_window_buffer); | |
3556 | defsubr (&Sselect_window); | |
3557 | defsubr (&Sdisplay_buffer); | |
3558 | defsubr (&Ssplit_window); | |
3559 | defsubr (&Senlarge_window); | |
3560 | defsubr (&Sshrink_window); | |
3561 | defsubr (&Sscroll_up); | |
3562 | defsubr (&Sscroll_down); | |
3563 | defsubr (&Sscroll_left); | |
3564 | defsubr (&Sscroll_right); | |
ccd0664b | 3565 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
3566 | defsubr (&Sscroll_other_window); |
3567 | defsubr (&Srecenter); | |
3568 | defsubr (&Smove_to_window_line); | |
3569 | defsubr (&Swindow_configuration_p); | |
3570 | defsubr (&Sset_window_configuration); | |
3571 | defsubr (&Scurrent_window_configuration); | |
3572 | defsubr (&Ssave_window_excursion); | |
3573 | } | |
3574 | ||
3575 | keys_of_window () | |
3576 | { | |
3577 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3578 | initial_define_key (control_x_map, '2', "split-window"); | |
3579 | initial_define_key (control_x_map, '0', "delete-window"); | |
3580 | initial_define_key (control_x_map, 'o', "other-window"); | |
3581 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3582 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3583 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3584 | ||
3585 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3586 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3587 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3588 | ||
3589 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3590 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3591 | } |