Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
37962e60 | 3 | Copyright (C) 1985, 86, 87, 93, 94, 95, 96 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 | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 21 | |
18160b98 | 22 | #include <config.h> |
7ab12479 JB |
23 | #include "lisp.h" |
24 | #include "buffer.h" | |
44fa5b1e | 25 | #include "frame.h" |
7ab12479 JB |
26 | #include "window.h" |
27 | #include "commands.h" | |
28 | #include "indent.h" | |
29 | #include "termchar.h" | |
30 | #include "disptab.h" | |
f8026fd8 | 31 | #include "keyboard.h" |
7ab12479 | 32 | |
806b4d9b | 33 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 JB |
34 | |
35 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
36 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
37 | ||
fd482be5 | 38 | void delete_all_subwindows (); |
7ab12479 JB |
39 | static struct window *decode_window(); |
40 | ||
41 | /* This is the window in which the terminal's cursor should | |
42 | be left when nothing is being done with it. This must | |
43 | always be a leaf window, and its buffer is selected by | |
44 | the top level editing loop at the end of each command. | |
45 | ||
46 | This value is always the same as | |
44fa5b1e | 47 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
48 | |
49 | Lisp_Object selected_window; | |
50 | ||
44fa5b1e | 51 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
52 | Note that you cannot test for minibufferness of an arbitrary window |
53 | by comparing against this; but you can test for minibufferness of | |
54 | the selected window. */ | |
55 | Lisp_Object minibuf_window; | |
56 | ||
57 | /* Non-nil means it is the window for C-M-v to scroll | |
58 | when the minibuffer is selected. */ | |
59 | Lisp_Object Vminibuf_scroll_window; | |
60 | ||
61 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
62 | Lisp_Object Vother_window_scroll_buffer; | |
63 | ||
7ab12479 JB |
64 | /* Non-nil means it's function to call to display temp buffers. */ |
65 | Lisp_Object Vtemp_buffer_show_function; | |
66 | ||
67 | /* If a window gets smaller than either of these, it is removed. */ | |
68 | int window_min_height; | |
69 | int window_min_width; | |
70 | ||
71 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
72 | int pop_up_windows; | |
73 | ||
44fa5b1e JB |
74 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
75 | int pop_up_frames; | |
7ab12479 JB |
76 | |
77 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 78 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
79 | |
80 | /* Function to call to handle Fdisplay_buffer. */ | |
81 | Lisp_Object Vdisplay_buffer_function; | |
82 | ||
a90712c2 RS |
83 | /* List of buffer *names* for buffers that should have their own frames. */ |
84 | Lisp_Object Vspecial_display_buffer_names; | |
85 | ||
86 | /* List of regexps for buffer names that should have their own frames. */ | |
87 | Lisp_Object Vspecial_display_regexps; | |
88 | ||
89 | /* Function to pop up a special frame. */ | |
90 | Lisp_Object Vspecial_display_function; | |
91 | ||
855d8627 RS |
92 | /* List of buffer *names* for buffers to appear in selected window. */ |
93 | Lisp_Object Vsame_window_buffer_names; | |
94 | ||
95 | /* List of regexps for buffer names to appear in selected window. */ | |
96 | Lisp_Object Vsame_window_regexps; | |
97 | ||
a58ec57d RS |
98 | /* Hook run at end of temp_output_buffer_show. */ |
99 | Lisp_Object Qtemp_buffer_show_hook; | |
100 | ||
37962e60 | 101 | /* Fdisplay_buffer always splits the largest window |
7ab12479 JB |
102 | if that window is more than this high. */ |
103 | int split_height_threshold; | |
104 | ||
105 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
106 | int next_screen_context_lines; | |
107 | ||
108 | /* Incremented for each window created. */ | |
109 | static int sequence_number; | |
110 | ||
5b03d3c0 RS |
111 | /* Nonzero after init_window_once has finished. */ |
112 | static int window_initialized; | |
113 | ||
7ab12479 | 114 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 RS |
115 | |
116 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; | |
7ab12479 JB |
117 | \f |
118 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
119 | "Returns t if OBJECT is a window.") |
120 | (object) | |
121 | Lisp_Object object; | |
7ab12479 | 122 | { |
413430c5 | 123 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
124 | } |
125 | ||
806b4d9b | 126 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
127 | "Returns t if OBJECT is a window which is currently visible.") |
128 | (object) | |
129 | Lisp_Object object; | |
605be8af | 130 | { |
413430c5 | 131 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
132 | } |
133 | ||
7ab12479 JB |
134 | Lisp_Object |
135 | make_window () | |
136 | { | |
cffec418 | 137 | Lisp_Object val; |
7ab12479 | 138 | register struct window *p; |
cffec418 KH |
139 | register struct Lisp_Vector *vec; |
140 | int i; | |
141 | ||
142 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
143 | for (i = 0; i < VECSIZE (struct window); i++) | |
144 | vec->contents[i] = Qnil; | |
145 | vec->size = VECSIZE (struct window); | |
146 | p = (struct window *)vec; | |
d834a2e9 KH |
147 | XSETFASTINT (p->sequence_number, ++sequence_number); |
148 | XSETFASTINT (p->left, 0); | |
149 | XSETFASTINT (p->top, 0); | |
150 | XSETFASTINT (p->height, 0); | |
151 | XSETFASTINT (p->width, 0); | |
152 | XSETFASTINT (p->hscroll, 0); | |
153 | XSETFASTINT (p->last_point_x, 0); | |
154 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
155 | p->start = Fmake_marker (); |
156 | p->pointm = Fmake_marker (); | |
d834a2e9 | 157 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 158 | p->frame = Qnil; |
7ab12479 JB |
159 | p->display_table = Qnil; |
160 | p->dedicated = Qnil; | |
cffec418 | 161 | XSETWINDOW (val, p); |
7ab12479 JB |
162 | return val; |
163 | } | |
164 | ||
165 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
166 | "Return the window that the cursor now appears in and commands apply to.") | |
167 | () | |
168 | { | |
169 | return selected_window; | |
170 | } | |
171 | ||
83762ba4 JB |
172 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
173 | "Return the window used now for minibuffers.\n\ | |
174 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
175 | used by that frame.") | |
176 | (frame) | |
177 | Lisp_Object frame; | |
7ab12479 | 178 | { |
83762ba4 | 179 | if (NILP (frame)) |
74112613 | 180 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
181 | else |
182 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 JB |
183 | |
184 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
185 | } |
186 | ||
605be8af | 187 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
188 | "Returns non-nil if WINDOW is a minibuffer window.") |
189 | (window) | |
190 | Lisp_Object window; | |
191 | { | |
192 | struct window *w = decode_window (window); | |
193 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
194 | } | |
195 | ||
196 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
197 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 198 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
199 | Returns nil if that position is scrolled vertically out of view.\n\ |
200 | POS defaults to point; WINDOW, to the selected window.") | |
201 | (pos, window) | |
202 | Lisp_Object pos, window; | |
203 | { | |
204 | register struct window *w; | |
205 | register int top; | |
206 | register int height; | |
207 | register int posint; | |
208 | register struct buffer *buf; | |
209 | struct position posval; | |
afdb2485 | 210 | int hscroll; |
7ab12479 | 211 | |
265a9e55 | 212 | if (NILP (pos)) |
5ce7b543 | 213 | posint = PT; |
7ab12479 JB |
214 | else |
215 | { | |
216 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
217 | posint = XINT (pos); | |
218 | } | |
219 | ||
605be8af | 220 | w = decode_window (window); |
7ab12479 | 221 | top = marker_position (w->start); |
afdb2485 | 222 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
223 | |
224 | if (posint < top) | |
225 | return Qnil; | |
226 | ||
227 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
228 | ||
229 | buf = XBUFFER (w->buffer); | |
230 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
231 | { | |
44fa5b1e | 232 | /* If frame is up to date, |
7ab12479 JB |
233 | use the info recorded about how much text fit on it. */ |
234 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
235 | || (XFASTINT (w->window_end_vpos) < height)) | |
236 | return Qt; | |
237 | return Qnil; | |
238 | } | |
239 | else | |
240 | { | |
33eb4ede | 241 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
242 | return Qnil; |
243 | ||
61b5322b RS |
244 | /* w->start can be out of range. If it is, do something reasonable. */ |
245 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
246 | return Qnil; | |
247 | ||
7ab12479 | 248 | /* If that info is not correct, calculate afresh */ |
4efffd80 | 249 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0, |
afdb2485 | 250 | posint, height, 0, |
535e0b8e | 251 | window_internal_width (w) - 1, |
e37f06d7 | 252 | hscroll, 0, w); |
7ab12479 JB |
253 | |
254 | return posval.vpos < height ? Qt : Qnil; | |
255 | } | |
256 | } | |
257 | \f | |
258 | static struct window * | |
259 | decode_window (window) | |
260 | register Lisp_Object window; | |
261 | { | |
265a9e55 | 262 | if (NILP (window)) |
7ab12479 JB |
263 | return XWINDOW (selected_window); |
264 | ||
605be8af | 265 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
266 | return XWINDOW (window); |
267 | } | |
268 | ||
269 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
270 | "Return the buffer that WINDOW is displaying.") | |
271 | (window) | |
272 | Lisp_Object window; | |
273 | { | |
274 | return decode_window (window)->buffer; | |
275 | } | |
276 | ||
277 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
278 | "Return the number of lines in WINDOW (including its mode line).") | |
279 | (window) | |
280 | Lisp_Object window; | |
281 | { | |
282 | return decode_window (window)->height; | |
283 | } | |
284 | ||
285 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
286 | "Return the number of display columns in WINDOW.\n\ |
287 | This is the width that is usable columns available for text in WINDOW.\n\ | |
288 | If you want to find out how many columns WINDOW takes up,\n\ | |
289 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
290 | (window) |
291 | Lisp_Object window; | |
292 | { | |
ee61d94e | 293 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
294 | } |
295 | ||
296 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
297 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
298 | (window) | |
299 | Lisp_Object window; | |
300 | { | |
301 | return decode_window (window)->hscroll; | |
302 | } | |
303 | ||
304 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
305 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
306 | NCOL should be zero or positive.") | |
307 | (window, ncol) | |
308 | register Lisp_Object window, ncol; | |
309 | { | |
310 | register struct window *w; | |
311 | ||
312 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 313 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 314 | w = decode_window (window); |
7f4161e0 | 315 | if (XINT (w->hscroll) != XINT (ncol)) |
1479ef51 | 316 | XBUFFER (w->buffer)->clip_changed = 1; /* Prevent redisplay shortcuts */ |
7ab12479 JB |
317 | w->hscroll = ncol; |
318 | return ncol; | |
319 | } | |
320 | ||
190eb263 RS |
321 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
322 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
323 | "Return WINDOW's redisplay end trigger value.\n\ | |
324 | See `set-window-redisplay-end-trigger' for more information.") | |
325 | (window) | |
326 | Lisp_Object window; | |
327 | { | |
328 | return decode_window (window)->redisplay_end_trigger; | |
329 | } | |
330 | ||
331 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
332 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
333 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
334 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
335 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
336 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
337 | with two arguments: WINDOW, and the end trigger value.\n\ | |
338 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
339 | (window, value) |
340 | register Lisp_Object window, value; | |
341 | { | |
342 | register struct window *w; | |
343 | ||
344 | w = decode_window (window); | |
345 | w->redisplay_end_trigger = value; | |
346 | return value; | |
347 | } | |
348 | ||
7ab12479 JB |
349 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
350 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 351 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
352 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
353 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
354 | and its mode-line.") | |
355 | (window) | |
356 | Lisp_Object window; | |
357 | { | |
358 | register struct window *w = decode_window (window); | |
359 | ||
360 | return Fcons (w->left, Fcons (w->top, | |
361 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
362 | Fcons (make_number (XFASTINT (w->top) | |
363 | + XFASTINT (w->height)), | |
364 | Qnil)))); | |
365 | } | |
366 | ||
d5783c40 JB |
367 | /* Test if the character at column *x, row *y is within window *w. |
368 | If it is not, return 0; | |
369 | if it is in the window's text area, | |
370 | set *x and *y to its location relative to the upper left corner | |
371 | of the window, and | |
372 | return 1; | |
373 | if it is on the window's modeline, return 2; | |
374 | if it is on the border between the window and its right sibling, | |
375 | return 3. */ | |
376 | static int | |
377 | coordinates_in_window (w, x, y) | |
378 | register struct window *w; | |
379 | register int *x, *y; | |
380 | { | |
381 | register int left = XINT (w->left); | |
382 | register int width = XINT (w->width); | |
383 | register int window_height = XINT (w->height); | |
384 | register int top = XFASTINT (w->top); | |
385 | ||
386 | if ( *x < left || *x >= left + width | |
387 | || *y < top || *y >= top + window_height) | |
388 | return 0; | |
389 | ||
390 | /* Is the character is the mode line? */ | |
391 | if (*y == top + window_height - 1 | |
05c2896a | 392 | && ! MINI_WINDOW_P (w)) |
d5783c40 | 393 | return 2; |
37962e60 | 394 | |
d5783c40 JB |
395 | /* Is the character in the right border? */ |
396 | if (*x == left + width - 1 | |
44fa5b1e | 397 | && left + width != FRAME_WIDTH (XFRAME (w->frame))) |
d5783c40 JB |
398 | return 3; |
399 | ||
400 | *x -= left; | |
401 | *y -= top; | |
402 | return 1; | |
403 | } | |
404 | ||
405 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
406 | Scoordinates_in_window_p, 2, 2, 0, | |
407 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 408 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 409 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 410 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 411 | frame.\n\ |
d5783c40 JB |
412 | If COORDINATES are in the text portion of WINDOW,\n\ |
413 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 414 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 415 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 416 | `vertical-line' is returned.") |
d5783c40 JB |
417 | (coordinates, window) |
418 | register Lisp_Object coordinates, window; | |
419 | { | |
420 | int x, y; | |
421 | ||
605be8af | 422 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
423 | CHECK_CONS (coordinates, 1); |
424 | x = XINT (Fcar (coordinates)); | |
425 | y = XINT (Fcdr (coordinates)); | |
426 | ||
427 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
428 | { | |
429 | case 0: /* NOT in window at all. */ | |
430 | return Qnil; | |
431 | ||
432 | case 1: /* In text part of window. */ | |
433 | return Fcons (x, y); | |
434 | ||
435 | case 2: /* In mode line of window. */ | |
436 | return Qmode_line; | |
37962e60 | 437 | |
d5783c40 | 438 | case 3: /* On right border of window. */ |
e5d77022 | 439 | return Qvertical_line; |
d5783c40 JB |
440 | |
441 | default: | |
442 | abort (); | |
443 | } | |
444 | } | |
445 | ||
7ab12479 | 446 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
447 | Lisp_Object. If x, y is on the window's modeline, set *part |
448 | to 1; if it is on the separating line between the window and its | |
449 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
450 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 451 | Lisp_Object |
44fa5b1e JB |
452 | window_from_coordinates (frame, x, y, part) |
453 | FRAME_PTR frame; | |
7ab12479 | 454 | int x, y; |
d5783c40 | 455 | int *part; |
7ab12479 JB |
456 | { |
457 | register Lisp_Object tem, first; | |
458 | ||
44fa5b1e | 459 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 460 | |
d5783c40 | 461 | do |
7ab12479 JB |
462 | { |
463 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
464 | ||
465 | if (found) | |
466 | { | |
d5783c40 | 467 | *part = found - 1; |
7ab12479 JB |
468 | return tem; |
469 | } | |
470 | ||
d5783c40 | 471 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 472 | } |
d5783c40 | 473 | while (! EQ (tem, first)); |
37962e60 | 474 | |
d5783c40 | 475 | return Qnil; |
7ab12479 JB |
476 | } |
477 | ||
ab17c3f2 | 478 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 479 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
480 | If omitted, FRAME defaults to the currently selected frame.\n\ |
481 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 482 | column 0.") |
b0c33a94 RS |
483 | (x, y, frame) |
484 | Lisp_Object x, y, frame; | |
7ab12479 JB |
485 | { |
486 | int part; | |
487 | ||
44fa5b1e | 488 | if (NILP (frame)) |
74112613 | 489 | XSETFRAME (frame, selected_frame); |
d5783c40 | 490 | else |
44fa5b1e | 491 | CHECK_LIVE_FRAME (frame, 2); |
b0c33a94 RS |
492 | CHECK_NUMBER (x, 0); |
493 | CHECK_NUMBER (y, 1); | |
7ab12479 | 494 | |
44fa5b1e | 495 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 496 | XINT (x), XINT (y), |
7ab12479 JB |
497 | &part); |
498 | } | |
499 | ||
500 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
501 | "Return current value of point in WINDOW.\n\ | |
502 | For a nonselected window, this is the value point would have\n\ | |
503 | if that window were selected.\n\ | |
504 | \n\ | |
505 | Note that, when WINDOW is the selected window and its buffer\n\ | |
506 | is also currently selected, the value returned is the same as (point).\n\ | |
507 | It would be more strictly correct to return the `top-level' value\n\ | |
508 | of point, outside of any save-excursion forms.\n\ | |
509 | But that is hard to define.") | |
510 | (window) | |
511 | Lisp_Object window; | |
512 | { | |
513 | register struct window *w = decode_window (window); | |
514 | ||
515 | if (w == XWINDOW (selected_window) | |
516 | && current_buffer == XBUFFER (w->buffer)) | |
517 | return Fpoint (); | |
518 | return Fmarker_position (w->pointm); | |
519 | } | |
520 | ||
521 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
522 | "Return position at which display currently starts in WINDOW.\n\ |
523 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
524 | (window) |
525 | Lisp_Object window; | |
526 | { | |
527 | return Fmarker_position (decode_window (window)->start); | |
528 | } | |
529 | ||
8646118f RS |
530 | /* This is text temporarily removed from the doc string below. |
531 | ||
7250968e RS |
532 | This function returns nil if the position is not currently known.\n\ |
533 | That happens when redisplay is preempted and doesn't finish.\n\ | |
534 | If in that case you want to compute where the end of the window would\n\ | |
535 | have been if redisplay had finished, do this:\n\ | |
536 | (save-excursion\n\ | |
537 | (goto-char (window-start window))\n\ | |
538 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
539 | (point))") */ |
540 | ||
541 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
542 | "Return position at which display currently ends in WINDOW.\n\ | |
543 | This is updated by redisplay, when it runs to completion.\n\ | |
544 | Simply changing the buffer text or setting `window-start'\n\ | |
545 | does not update this value.") | |
7ab12479 JB |
546 | (window) |
547 | Lisp_Object window; | |
548 | { | |
549 | Lisp_Object value; | |
550 | struct window *w = decode_window (window); | |
5a41ab94 RS |
551 | Lisp_Object buf; |
552 | ||
553 | buf = w->buffer; | |
554 | CHECK_BUFFER (buf, 0); | |
555 | ||
8646118f | 556 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
557 | /* If we don't know the end position, return nil. |
558 | The user can compute it with vertical-motion if he wants to. | |
559 | It would be nicer to do it automatically, | |
560 | but that's so slow that it would probably bother people. */ | |
561 | if (NILP (w->window_end_valid)) | |
562 | return Qnil; | |
8646118f | 563 | #endif |
7250968e | 564 | |
74112613 KH |
565 | XSETINT (value, |
566 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
567 | |
568 | return value; | |
569 | } | |
570 | ||
571 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
572 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
573 | (window, pos) | |
574 | Lisp_Object window, pos; | |
575 | { | |
576 | register struct window *w = decode_window (window); | |
577 | ||
578 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
579 | if (w == XWINDOW (selected_window)) | |
580 | Fgoto_char (pos); | |
581 | else | |
582 | set_marker_restricted (w->pointm, pos, w->buffer); | |
583 | ||
584 | return pos; | |
585 | } | |
586 | ||
587 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
588 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
589 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
590 | from overriding motion of point in order to display at this exact start.") | |
591 | (window, pos, noforce) | |
592 | Lisp_Object window, pos, noforce; | |
593 | { | |
594 | register struct window *w = decode_window (window); | |
595 | ||
596 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
597 | set_marker_restricted (w->start, pos, w->buffer); | |
598 | /* this is not right, but much easier than doing what is right. */ | |
599 | w->start_at_line_beg = Qnil; | |
265a9e55 | 600 | if (NILP (noforce)) |
7ab12479 JB |
601 | w->force_start = Qt; |
602 | w->update_mode_line = Qt; | |
d834a2e9 | 603 | XSETFASTINT (w->last_modified, 0); |
62c07cc7 JB |
604 | if (!EQ (window, selected_window)) |
605 | windows_or_buffers_changed++; | |
7ab12479 JB |
606 | return pos; |
607 | } | |
608 | ||
609 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
610 | 1, 1, 0, | |
611 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 612 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
613 | (window) |
614 | Lisp_Object window; | |
615 | { | |
616 | return decode_window (window)->dedicated; | |
617 | } | |
618 | ||
d207b766 RS |
619 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
620 | Sset_window_dedicated_p, 2, 2, 0, | |
621 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
622 | If it is dedicated, Emacs will not automatically change\n\ | |
623 | which buffer appears in it.\n\ | |
624 | The second argument is the new value for the dedication flag;\n\ | |
625 | non-nil means yes.") | |
7ab12479 JB |
626 | (window, arg) |
627 | Lisp_Object window, arg; | |
628 | { | |
629 | register struct window *w = decode_window (window); | |
630 | ||
265a9e55 | 631 | if (NILP (arg)) |
7ab12479 JB |
632 | w->dedicated = Qnil; |
633 | else | |
d207b766 | 634 | w->dedicated = Qt; |
7ab12479 JB |
635 | |
636 | return w->dedicated; | |
637 | } | |
638 | ||
639 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
640 | 0, 1, 0, | |
641 | "Return the display-table that WINDOW is using.") | |
642 | (window) | |
643 | Lisp_Object window; | |
644 | { | |
645 | return decode_window (window)->display_table; | |
646 | } | |
647 | ||
648 | /* Get the display table for use currently on window W. | |
649 | This is either W's display table or W's buffer's display table. | |
650 | Ignore the specified tables if they are not valid; | |
651 | if no valid table is specified, return 0. */ | |
652 | ||
319315f1 | 653 | struct Lisp_Char_Table * |
7ab12479 JB |
654 | window_display_table (w) |
655 | struct window *w; | |
656 | { | |
657 | Lisp_Object tem; | |
658 | tem = w->display_table; | |
319315f1 RS |
659 | if (DISP_TABLE_P (tem)) |
660 | return XCHAR_TABLE (tem); | |
7ab12479 | 661 | tem = XBUFFER (w->buffer)->display_table; |
319315f1 RS |
662 | if (DISP_TABLE_P (tem)) |
663 | return XCHAR_TABLE (tem); | |
7ab12479 | 664 | tem = Vstandard_display_table; |
319315f1 RS |
665 | if (DISP_TABLE_P (tem)) |
666 | return XCHAR_TABLE (tem); | |
7ab12479 JB |
667 | return 0; |
668 | } | |
669 | ||
3a2712f9 | 670 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
671 | "Set WINDOW's display-table to TABLE.") |
672 | (window, table) | |
673 | register Lisp_Object window, table; | |
674 | { | |
675 | register struct window *w; | |
676 | register Lisp_Object z; /* Return value. */ | |
677 | ||
678 | w = decode_window (window); | |
679 | w->display_table = table; | |
680 | return table; | |
681 | } | |
682 | \f | |
683 | /* Record info on buffer window w is displaying | |
684 | when it is about to cease to display that buffer. */ | |
685 | static | |
686 | unshow_buffer (w) | |
687 | register struct window *w; | |
688 | { | |
12cae7c0 | 689 | Lisp_Object buf; |
7ab12479 | 690 | |
12cae7c0 | 691 | buf = w->buffer; |
7ab12479 JB |
692 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) |
693 | abort (); | |
694 | ||
86e48436 RS |
695 | if (w == XWINDOW (XBUFFER (buf)->last_selected_window)) |
696 | XBUFFER (buf)->last_selected_window = Qnil; | |
697 | ||
573f41ab | 698 | #if 0 |
7ab12479 JB |
699 | if (w == XWINDOW (selected_window) |
700 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
701 | /* Do this except when the selected window's buffer | |
702 | is being removed from some other window. */ | |
573f41ab RS |
703 | #endif |
704 | /* last_window_start records the start position that this buffer | |
705 | had in the last window to be disconnected from it. | |
706 | Now that this statement is unconditional, | |
707 | it is possible for the buffer to be displayed in the | |
708 | selected window, while last_window_start reflects another | |
709 | window which was recently showing the same buffer. | |
710 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
711 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
712 | ||
713 | /* Point in the selected window's buffer | |
714 | is actually stored in that buffer, and the window's pointm isn't used. | |
715 | So don't clobber point in that buffer. */ | |
716 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
717 | BUF_PT (XBUFFER (buf)) | |
718 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
719 | marker_position (w->pointm), | |
720 | BUF_ZV (XBUFFER (buf))); | |
721 | } | |
722 | ||
723 | /* Put replacement into the window structure in place of old. */ | |
724 | static | |
725 | replace_window (old, replacement) | |
726 | Lisp_Object old, replacement; | |
727 | { | |
728 | register Lisp_Object tem; | |
729 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
730 | ||
44fa5b1e JB |
731 | /* If OLD is its frame's root_window, then replacement is the new |
732 | root_window for that frame. */ | |
7ab12479 | 733 | |
7f4161e0 | 734 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 735 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
736 | |
737 | p->left = o->left; | |
738 | p->top = o->top; | |
739 | p->width = o->width; | |
740 | p->height = o->height; | |
741 | ||
742 | p->next = tem = o->next; | |
265a9e55 | 743 | if (!NILP (tem)) |
7ab12479 JB |
744 | XWINDOW (tem)->prev = replacement; |
745 | ||
746 | p->prev = tem = o->prev; | |
265a9e55 | 747 | if (!NILP (tem)) |
7ab12479 JB |
748 | XWINDOW (tem)->next = replacement; |
749 | ||
750 | p->parent = tem = o->parent; | |
265a9e55 | 751 | if (!NILP (tem)) |
7ab12479 JB |
752 | { |
753 | if (EQ (XWINDOW (tem)->vchild, old)) | |
754 | XWINDOW (tem)->vchild = replacement; | |
755 | if (EQ (XWINDOW (tem)->hchild, old)) | |
756 | XWINDOW (tem)->hchild = replacement; | |
757 | } | |
758 | ||
759 | /*** Here, if replacement is a vertical combination | |
760 | and so is its new parent, we should make replacement's | |
761 | children be children of that parent instead. ***/ | |
762 | } | |
763 | ||
764 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
765 | "Remove WINDOW from the display. Default is selected window.") | |
766 | (window) | |
767 | register Lisp_Object window; | |
768 | { | |
769 | register Lisp_Object tem, parent, sib; | |
770 | register struct window *p; | |
771 | register struct window *par; | |
772 | ||
605be8af JB |
773 | /* Because this function is called by other C code on non-leaf |
774 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
775 | so we can't decode_window here. */ | |
265a9e55 | 776 | if (NILP (window)) |
7ab12479 JB |
777 | window = selected_window; |
778 | else | |
779 | CHECK_WINDOW (window, 0); | |
7ab12479 | 780 | p = XWINDOW (window); |
605be8af JB |
781 | |
782 | /* It's okay to delete an already-deleted window. */ | |
783 | if (NILP (p->buffer) | |
784 | && NILP (p->hchild) | |
785 | && NILP (p->vchild)) | |
786 | return Qnil; | |
787 | ||
7ab12479 | 788 | parent = p->parent; |
265a9e55 | 789 | if (NILP (parent)) |
7ab12479 JB |
790 | error ("Attempt to delete minibuffer or sole ordinary window"); |
791 | par = XWINDOW (parent); | |
792 | ||
793 | windows_or_buffers_changed++; | |
29aeee73 | 794 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; |
7ab12479 | 795 | |
605be8af JB |
796 | /* Are we trying to delete any frame's selected window? */ |
797 | { | |
0def0403 | 798 | Lisp_Object frame, pwindow; |
605be8af | 799 | |
0def0403 RS |
800 | /* See if the frame's selected window is either WINDOW |
801 | or any subwindow of it, by finding all that window's parents | |
802 | and comparing each one with WINDOW. */ | |
803 | frame = WINDOW_FRAME (XWINDOW (window)); | |
804 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
805 | ||
806 | while (!NILP (pwindow)) | |
807 | { | |
808 | if (EQ (window, pwindow)) | |
809 | break; | |
810 | pwindow = XWINDOW (pwindow)->parent; | |
811 | } | |
812 | ||
813 | if (EQ (window, pwindow)) | |
605be8af | 814 | { |
89bca612 RS |
815 | Lisp_Object alternative; |
816 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
817 | |
818 | /* If we're about to delete the selected window on the | |
819 | selected frame, then we should use Fselect_window to select | |
820 | the new window. On the other hand, if we're about to | |
821 | delete the selected window on any other frame, we shouldn't do | |
822 | anything but set the frame's selected_window slot. */ | |
823 | if (EQ (window, selected_window)) | |
824 | Fselect_window (alternative); | |
825 | else | |
0def0403 | 826 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
827 | } |
828 | } | |
7ab12479 JB |
829 | |
830 | tem = p->buffer; | |
831 | /* tem is null for dummy parent windows | |
832 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 833 | if (!NILP (tem)) |
7ab12479 JB |
834 | { |
835 | unshow_buffer (p); | |
836 | unchain_marker (p->pointm); | |
837 | unchain_marker (p->start); | |
7ab12479 JB |
838 | } |
839 | ||
840 | tem = p->next; | |
265a9e55 | 841 | if (!NILP (tem)) |
7ab12479 JB |
842 | XWINDOW (tem)->prev = p->prev; |
843 | ||
844 | tem = p->prev; | |
265a9e55 | 845 | if (!NILP (tem)) |
7ab12479 JB |
846 | XWINDOW (tem)->next = p->next; |
847 | ||
848 | if (EQ (window, par->hchild)) | |
849 | par->hchild = p->next; | |
850 | if (EQ (window, par->vchild)) | |
851 | par->vchild = p->next; | |
852 | ||
853 | /* Find one of our siblings to give our space to. */ | |
854 | sib = p->prev; | |
265a9e55 | 855 | if (NILP (sib)) |
7ab12479 JB |
856 | { |
857 | /* If p gives its space to its next sibling, that sibling needs | |
858 | to have its top/left side pulled back to where p's is. | |
859 | set_window_{height,width} will re-position the sibling's | |
860 | children. */ | |
861 | sib = p->next; | |
7f4161e0 JB |
862 | XWINDOW (sib)->top = p->top; |
863 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
864 | } |
865 | ||
866 | /* Stretch that sibling. */ | |
265a9e55 | 867 | if (!NILP (par->vchild)) |
7ab12479 JB |
868 | set_window_height (sib, |
869 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
870 | 1); | |
265a9e55 | 871 | if (!NILP (par->hchild)) |
7ab12479 JB |
872 | set_window_width (sib, |
873 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
874 | 1); | |
875 | ||
876 | /* If parent now has only one child, | |
877 | put the child into the parent's place. */ | |
7ab12479 | 878 | tem = par->hchild; |
265a9e55 | 879 | if (NILP (tem)) |
7ab12479 | 880 | tem = par->vchild; |
265a9e55 | 881 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 882 | replace_window (parent, tem); |
605be8af JB |
883 | |
884 | /* Since we may be deleting combination windows, we must make sure that | |
885 | not only p but all its children have been marked as deleted. */ | |
886 | if (! NILP (p->hchild)) | |
887 | delete_all_subwindows (XWINDOW (p->hchild)); | |
888 | else if (! NILP (p->vchild)) | |
889 | delete_all_subwindows (XWINDOW (p->vchild)); | |
890 | ||
891 | /* Mark this window as deleted. */ | |
892 | p->buffer = p->hchild = p->vchild = Qnil; | |
893 | ||
7ab12479 JB |
894 | return Qnil; |
895 | } | |
896 | \f | |
7ab12479 | 897 | |
44fa5b1e | 898 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 899 | |
26f6279d JB |
900 | /* This comment supplies the doc string for `next-window', |
901 | for make-docfile to see. We cannot put this in the real DEFUN | |
902 | due to limits in the Unix cpp. | |
903 | ||
904 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 905 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
906 | If omitted, WINDOW defaults to the selected window.\n\ |
907 | \n\ | |
908 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
909 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
910 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
911 | minibuffer even if it is active.\n\ | |
912 | \n\ | |
44fa5b1e JB |
913 | Several frames may share a single minibuffer; if the minibuffer\n\ |
914 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 915 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
916 | set of windows even when the minibuffer is on another frame. If the\n\ |
917 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 918 | \n\ |
44fa5b1e JB |
919 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
920 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 921 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 922 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 923 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 924 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
925 | \n\ |
926 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
927 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
928 | windows, eventually ending up back at the window you started with.\n\ | |
929 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
930 | (window, minibuf, all_frames) */ |
931 | ||
932 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
933 | 0) | |
44fa5b1e JB |
934 | (window, minibuf, all_frames) |
935 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
936 | { |
937 | register Lisp_Object tem; | |
d5783c40 | 938 | Lisp_Object start_window; |
7ab12479 | 939 | |
265a9e55 | 940 | if (NILP (window)) |
7ab12479 JB |
941 | window = selected_window; |
942 | else | |
605be8af | 943 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 944 | |
d5783c40 JB |
945 | start_window = window; |
946 | ||
947 | /* minibuf == nil may or may not include minibuffers. | |
948 | Decide if it does. */ | |
265a9e55 | 949 | if (NILP (minibuf)) |
fbdc1545 RS |
950 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
951 | else if (! EQ (minibuf, Qt)) | |
952 | minibuf = Qlambda; | |
953 | /* Now minibuf can be t => count all minibuffer windows, | |
954 | lambda => count none of them, | |
955 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 956 | |
1bb80f72 | 957 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e | 958 | if (NILP (all_frames)) |
fbdc1545 | 959 | all_frames = (! EQ (minibuf, Qlambda) |
1bb80f72 RS |
960 | ? (FRAME_MINIBUF_WINDOW |
961 | (XFRAME | |
962 | (WINDOW_FRAME | |
963 | (XWINDOW (window))))) | |
964 | : Qnil); | |
89bca612 RS |
965 | else if (EQ (all_frames, Qvisible)) |
966 | ; | |
f812f9c6 RS |
967 | else if (XFASTINT (all_frames) == 0) |
968 | ; | |
1f4c5d09 RS |
969 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
970 | /* If all_frames is a frame and window arg isn't on that frame, just | |
971 | return the first window on the frame. */ | |
972 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
973 | else if (! EQ (all_frames, Qt)) |
974 | all_frames = Qnil; | |
644b477c RS |
975 | /* Now all_frames is t meaning search all frames, |
976 | nil meaning search just current frame, | |
f812f9c6 RS |
977 | visible meaning search just visible frames, |
978 | 0 meaning search visible and iconified frames, | |
644b477c | 979 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
980 | |
981 | /* Do this loop at least once, to get the next window, and perhaps | |
982 | again, if we hit the minibuffer and that is not acceptable. */ | |
983 | do | |
984 | { | |
985 | /* Find a window that actually has a next one. This loop | |
986 | climbs up the tree. */ | |
265a9e55 JB |
987 | while (tem = XWINDOW (window)->next, NILP (tem)) |
988 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 989 | window = tem; |
d5783c40 | 990 | else |
7ab12479 | 991 | { |
44fa5b1e JB |
992 | /* We've reached the end of this frame. |
993 | Which other frames are acceptable? */ | |
994 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 995 | if (! NILP (all_frames)) |
1bb80f72 RS |
996 | { |
997 | Lisp_Object tem1; | |
998 | ||
999 | tem1 = tem; | |
1000 | tem = next_frame (tem, all_frames); | |
1001 | /* In the case where the minibuffer is active, | |
1002 | and we include its frame as well as the selected one, | |
1003 | next_frame may get stuck in that frame. | |
1004 | If that happens, go back to the selected frame | |
1005 | so we can complete the cycle. */ | |
1006 | if (EQ (tem, tem1)) | |
74112613 | 1007 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1008 | } |
44fa5b1e | 1009 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1010 | |
7ab12479 JB |
1011 | break; |
1012 | } | |
1013 | ||
1014 | window = tem; | |
d5783c40 | 1015 | |
7ab12479 JB |
1016 | /* If we're in a combination window, find its first child and |
1017 | recurse on that. Otherwise, we've found the window we want. */ | |
1018 | while (1) | |
1019 | { | |
265a9e55 | 1020 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1021 | window = XWINDOW (window)->hchild; |
265a9e55 | 1022 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1023 | window = XWINDOW (window)->vchild; |
1024 | else break; | |
1025 | } | |
1026 | } | |
5c4d25a6 | 1027 | /* Which windows are acceptable? |
d5783c40 | 1028 | Exit the loop and accept this window if |
fbdc1545 RS |
1029 | this isn't a minibuffer window, |
1030 | or we're accepting all minibuffer windows, | |
1031 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1032 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1033 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1034 | && ! EQ (minibuf, Qt) |
fbdc1545 | 1035 | && ! EQ (minibuf, window) |
7f4161e0 | 1036 | && ! EQ (window, start_window)); |
7ab12479 JB |
1037 | |
1038 | return window; | |
1039 | } | |
1040 | ||
26f6279d JB |
1041 | /* This comment supplies the doc string for `previous-window', |
1042 | for make-docfile to see. We cannot put this in the real DEFUN | |
1043 | due to limits in the Unix cpp. | |
1044 | ||
1045 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1046 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1047 | If omitted, WINDOW defaults to the selected window.\n\ |
1048 | \n\ | |
1049 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1050 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1051 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1052 | minibuffer even if it is active.\n\ | |
1053 | \n\ | |
44fa5b1e JB |
1054 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1055 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1056 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1057 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1058 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1059 | \n\ |
44fa5b1e JB |
1060 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1061 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1062 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1063 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1064 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1065 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1066 | \n\ |
1067 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1068 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1069 | windows, eventually ending up back at the window you started with.\n\ | |
1070 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1071 | (window, minibuf, all_frames) */ |
1072 | ||
1073 | ||
1074 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1075 | 0) | |
44fa5b1e JB |
1076 | (window, minibuf, all_frames) |
1077 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1078 | { |
1079 | register Lisp_Object tem; | |
d5783c40 | 1080 | Lisp_Object start_window; |
7ab12479 | 1081 | |
265a9e55 | 1082 | if (NILP (window)) |
7ab12479 JB |
1083 | window = selected_window; |
1084 | else | |
605be8af | 1085 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1086 | |
d5783c40 JB |
1087 | start_window = window; |
1088 | ||
1089 | /* minibuf == nil may or may not include minibuffers. | |
1090 | Decide if it does. */ | |
265a9e55 | 1091 | if (NILP (minibuf)) |
fbdc1545 RS |
1092 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1093 | else if (! EQ (minibuf, Qt)) | |
1094 | minibuf = Qlambda; | |
1095 | /* Now minibuf can be t => count all minibuffer windows, | |
1096 | lambda => count none of them, | |
1097 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1098 | |
44fa5b1e JB |
1099 | /* all_frames == nil doesn't specify which frames to include. |
1100 | Decide which frames it includes. */ | |
1101 | if (NILP (all_frames)) | |
fbdc1545 | 1102 | all_frames = (! EQ (minibuf, Qlambda) |
44fa5b1e JB |
1103 | ? (FRAME_MINIBUF_WINDOW |
1104 | (XFRAME | |
1105 | (WINDOW_FRAME | |
d5783c40 JB |
1106 | (XWINDOW (window))))) |
1107 | : Qnil); | |
89bca612 RS |
1108 | else if (EQ (all_frames, Qvisible)) |
1109 | ; | |
f812f9c6 RS |
1110 | else if (XFASTINT (all_frames) == 0) |
1111 | ; | |
1f4c5d09 RS |
1112 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1113 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1114 | return the first window on the frame. */ | |
1115 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1116 | else if (! EQ (all_frames, Qt)) |
1117 | all_frames = Qnil; | |
644b477c RS |
1118 | /* Now all_frames is t meaning search all frames, |
1119 | nil meaning search just current frame, | |
f812f9c6 RS |
1120 | visible meaning search just visible frames, |
1121 | 0 meaning search visible and iconified frames, | |
644b477c | 1122 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1123 | |
1124 | /* Do this loop at least once, to get the previous window, and perhaps | |
1125 | again, if we hit the minibuffer and that is not acceptable. */ | |
1126 | do | |
1127 | { | |
1128 | /* Find a window that actually has a previous one. This loop | |
1129 | climbs up the tree. */ | |
265a9e55 JB |
1130 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1131 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1132 | window = tem; |
d5783c40 | 1133 | else |
7ab12479 | 1134 | { |
44fa5b1e JB |
1135 | /* We have found the top window on the frame. |
1136 | Which frames are acceptable? */ | |
1137 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1138 | if (! NILP (all_frames)) |
dbc4e1c1 JB |
1139 | /* It's actually important that we use prev_frame here, |
1140 | rather than next_frame. All the windows acceptable | |
1141 | according to the given parameters should form a ring; | |
1142 | Fnext_window and Fprevious_window should go back and | |
1143 | forth around the ring. If we use next_frame here, | |
1144 | then Fnext_window and Fprevious_window take different | |
1145 | paths through the set of acceptable windows. | |
1146 | window_loop assumes that these `ring' requirement are | |
1147 | met. */ | |
1bb80f72 RS |
1148 | { |
1149 | Lisp_Object tem1; | |
1150 | ||
1151 | tem1 = tem; | |
1152 | tem = prev_frame (tem, all_frames); | |
1153 | /* In the case where the minibuffer is active, | |
1154 | and we include its frame as well as the selected one, | |
1155 | next_frame may get stuck in that frame. | |
1156 | If that happens, go back to the selected frame | |
1157 | so we can complete the cycle. */ | |
1158 | if (EQ (tem, tem1)) | |
74112613 | 1159 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1160 | } |
644b477c RS |
1161 | /* If this frame has a minibuffer, find that window first, |
1162 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1163 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1164 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1165 | else | |
644b477c | 1166 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1167 | |
7ab12479 JB |
1168 | break; |
1169 | } | |
1170 | ||
1171 | window = tem; | |
1172 | /* If we're in a combination window, find its last child and | |
1173 | recurse on that. Otherwise, we've found the window we want. */ | |
1174 | while (1) | |
1175 | { | |
265a9e55 | 1176 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1177 | window = XWINDOW (window)->hchild; |
265a9e55 | 1178 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1179 | window = XWINDOW (window)->vchild; |
1180 | else break; | |
265a9e55 | 1181 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1182 | window = tem; |
1183 | } | |
1184 | } | |
5c4d25a6 | 1185 | /* Which windows are acceptable? |
d5783c40 | 1186 | Exit the loop and accept this window if |
fbdc1545 RS |
1187 | this isn't a minibuffer window, |
1188 | or we're accepting all minibuffer windows, | |
1189 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1190 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1191 | while (MINI_WINDOW_P (XWINDOW (window)) |
fbdc1545 RS |
1192 | && ! EQ (minibuf, Qt) |
1193 | && ! EQ (minibuf, window) | |
1194 | && ! EQ (window, start_window)); | |
7ab12479 JB |
1195 | |
1196 | return window; | |
1197 | } | |
1198 | ||
62c07cc7 | 1199 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1200 | "Select the ARG'th different window on this frame.\n\ |
1201 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1202 | This command selects the window ARG steps away in that order.\n\ |
1203 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1204 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 EN |
1205 | (arg, all_frames) |
1206 | register Lisp_Object arg, all_frames; | |
7ab12479 JB |
1207 | { |
1208 | register int i; | |
1209 | register Lisp_Object w; | |
1210 | ||
413430c5 | 1211 | CHECK_NUMBER (arg, 0); |
7ab12479 | 1212 | w = selected_window; |
413430c5 | 1213 | i = XINT (arg); |
7ab12479 JB |
1214 | |
1215 | while (i > 0) | |
1216 | { | |
44fa5b1e | 1217 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1218 | i--; |
1219 | } | |
1220 | while (i < 0) | |
1221 | { | |
44fa5b1e | 1222 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1223 | i++; |
1224 | } | |
1225 | Fselect_window (w); | |
1226 | return Qnil; | |
1227 | } | |
1228 | \f | |
1229 | /* Look at all windows, performing an operation specified by TYPE | |
1230 | with argument OBJ. | |
75d8f668 | 1231 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1232 | Qnil, look at just the selected frame; |
89bca612 | 1233 | Qvisible, look at visible frames; |
75d8f668 | 1234 | a frame, just look at windows on that frame. |
7ab12479 JB |
1235 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1236 | */ | |
1237 | ||
1238 | enum window_loop | |
1239 | { | |
1240 | WINDOW_LOOP_UNUSED, | |
1241 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1242 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1243 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1244 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1245 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1246 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1247 | }; |
1248 | ||
1249 | static Lisp_Object | |
44fa5b1e | 1250 | window_loop (type, obj, mini, frames) |
7ab12479 | 1251 | enum window_loop type; |
44fa5b1e | 1252 | register Lisp_Object obj, frames; |
7ab12479 JB |
1253 | int mini; |
1254 | { | |
1255 | register Lisp_Object w; | |
1256 | register Lisp_Object best_window; | |
1257 | register Lisp_Object next_window; | |
4b206065 | 1258 | register Lisp_Object last_window; |
44fa5b1e | 1259 | FRAME_PTR frame; |
89bca612 RS |
1260 | Lisp_Object frame_arg; |
1261 | frame_arg = Qt; | |
44fa5b1e JB |
1262 | |
1263 | /* If we're only looping through windows on a particular frame, | |
1264 | frame points to that frame. If we're looping through windows | |
1265 | on all frames, frame is 0. */ | |
1266 | if (FRAMEP (frames)) | |
1267 | frame = XFRAME (frames); | |
1268 | else if (NILP (frames)) | |
1269 | frame = selected_frame; | |
7ab12479 | 1270 | else |
44fa5b1e | 1271 | frame = 0; |
89bca612 RS |
1272 | if (frame) |
1273 | frame_arg = Qlambda; | |
f812f9c6 RS |
1274 | else if (XFASTINT (frames) == 0) |
1275 | frame_arg = frames; | |
89bca612 RS |
1276 | else if (EQ (frames, Qvisible)) |
1277 | frame_arg = frames; | |
7ab12479 | 1278 | |
89bca612 RS |
1279 | /* frame_arg is Qlambda to stick to one frame, |
1280 | Qvisible to consider all visible frames, | |
1281 | or Qt otherwise. */ | |
1282 | ||
7ab12479 | 1283 | /* Pick a window to start with. */ |
017b2bad | 1284 | if (WINDOWP (obj)) |
4b206065 | 1285 | w = obj; |
44fa5b1e | 1286 | else if (frame) |
4b206065 | 1287 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1288 | else |
4b206065 JB |
1289 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1290 | ||
1291 | /* Figure out the last window we're going to mess with. Since | |
1292 | Fnext_window, given the same options, is guaranteed to go in a | |
1293 | ring, we can just use Fprevious_window to find the last one. | |
1294 | ||
1295 | We can't just wait until we hit the first window again, because | |
1296 | it might be deleted. */ | |
1297 | ||
89bca612 | 1298 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1299 | |
7ab12479 | 1300 | best_window = Qnil; |
4b206065 | 1301 | for (;;) |
7ab12479 | 1302 | { |
75d8f668 JB |
1303 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1304 | ||
7ab12479 JB |
1305 | /* Pick the next window now, since some operations will delete |
1306 | the current window. */ | |
89bca612 | 1307 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1308 | |
d29a5631 RS |
1309 | /* Note that we do not pay attention here to whether |
1310 | the frame is visible, since Fnext_window skips non-visible frames | |
1311 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1312 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1313 | || (mini && minibuf_level > 0)) |
1314 | switch (type) | |
1315 | { | |
1316 | case GET_BUFFER_WINDOW: | |
7ab12479 JB |
1317 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) |
1318 | return w; | |
1319 | break; | |
1320 | ||
1321 | case GET_LRU_WINDOW: | |
1322 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1323 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
a2db42d6 | 1324 | != FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (w))))) |
7ab12479 | 1325 | break; |
7ab12479 JB |
1326 | /* Ignore dedicated windows and minibuffers. */ |
1327 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1328 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1329 | break; |
265a9e55 | 1330 | if (NILP (best_window) |
7ab12479 JB |
1331 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1332 | > XFASTINT (XWINDOW (w)->use_time))) | |
1333 | best_window = w; | |
1334 | break; | |
1335 | ||
1336 | case DELETE_OTHER_WINDOWS: | |
1337 | if (XWINDOW (w) != XWINDOW (obj)) | |
1338 | Fdelete_window (w); | |
1339 | break; | |
1340 | ||
1341 | case DELETE_BUFFER_WINDOWS: | |
1342 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1343 | { | |
3548e138 RS |
1344 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1345 | ||
1346 | /* If this window is dedicated, and in a frame of its own, | |
1347 | kill the frame. */ | |
1348 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1349 | && !NILP (XWINDOW (w)->dedicated) | |
1350 | && other_visible_frames (f)) | |
7ab12479 | 1351 | { |
3548e138 RS |
1352 | /* Skip the other windows on this frame. |
1353 | There might be one, the minibuffer! */ | |
1354 | if (! EQ (w, last_window)) | |
1355 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1356 | { | |
1357 | /* As we go, check for the end of the loop. | |
1358 | We mustn't start going around a second time. */ | |
1359 | if (EQ (next_window, last_window)) | |
1360 | { | |
1361 | last_window = w; | |
1362 | break; | |
1363 | } | |
1364 | next_window = Fnext_window (next_window, | |
1365 | mini ? Qt : Qnil, | |
1366 | frame_arg); | |
1367 | } | |
1368 | /* Now we can safely delete the frame. */ | |
1369 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1370 | } |
1371 | else | |
3548e138 RS |
1372 | /* If we're deleting the buffer displayed in the only window |
1373 | on the frame, find a new buffer to display there. */ | |
1374 | if (NILP (XWINDOW (w)->parent)) | |
1375 | { | |
1376 | Lisp_Object new_buffer; | |
1377 | new_buffer = Fother_buffer (obj, Qnil); | |
1378 | if (NILP (new_buffer)) | |
1379 | new_buffer | |
1380 | = Fget_buffer_create (build_string ("*scratch*")); | |
1381 | Fset_window_buffer (w, new_buffer); | |
1382 | if (EQ (w, selected_window)) | |
1383 | Fset_buffer (XWINDOW (w)->buffer); | |
1384 | } | |
1385 | else | |
1386 | Fdelete_window (w); | |
7ab12479 JB |
1387 | } |
1388 | break; | |
1389 | ||
1390 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1391 | /* Ignore dedicated windows and minibuffers. */ |
1392 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1393 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1394 | break; |
1395 | { | |
1396 | struct window *best_window_ptr = XWINDOW (best_window); | |
1397 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1398 | if (NILP (best_window) |
1399 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1400 | > (XFASTINT (best_window_ptr->height) | |
1401 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1402 | best_window = w; |
1403 | } | |
1404 | break; | |
1405 | ||
1406 | case UNSHOW_BUFFER: | |
1407 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1408 | { | |
1409 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1410 | Lisp_Object another_buffer; |
38ab08d1 | 1411 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1412 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1413 | if (NILP (another_buffer)) |
7ab12479 JB |
1414 | another_buffer |
1415 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1416 | /* If this window is dedicated, and in a frame of its own, |
1417 | kill the frame. */ | |
1418 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1419 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1420 | && other_visible_frames (f)) |
45945a7b RS |
1421 | { |
1422 | /* Skip the other windows on this frame. | |
1423 | There might be one, the minibuffer! */ | |
1424 | if (! EQ (w, last_window)) | |
1425 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1426 | { | |
1427 | /* As we go, check for the end of the loop. | |
1428 | We mustn't start going around a second time. */ | |
1429 | if (EQ (next_window, last_window)) | |
1430 | { | |
1431 | last_window = w; | |
1432 | break; | |
1433 | } | |
1434 | next_window = Fnext_window (next_window, | |
1435 | mini ? Qt : Qnil, | |
1436 | frame_arg); | |
1437 | } | |
1438 | /* Now we can safely delete the frame. */ | |
1439 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1440 | } | |
38ab08d1 | 1441 | else |
38ab08d1 RS |
1442 | { |
1443 | /* Otherwise show a different buffer in the window. */ | |
1444 | XWINDOW (w)->dedicated = Qnil; | |
1445 | Fset_window_buffer (w, another_buffer); | |
1446 | if (EQ (w, selected_window)) | |
1447 | Fset_buffer (XWINDOW (w)->buffer); | |
1448 | } | |
7ab12479 JB |
1449 | } |
1450 | break; | |
1451 | } | |
4b206065 JB |
1452 | |
1453 | if (EQ (w, last_window)) | |
1454 | break; | |
1455 | ||
7ab12479 JB |
1456 | w = next_window; |
1457 | } | |
7ab12479 JB |
1458 | |
1459 | return best_window; | |
37962e60 | 1460 | } |
605be8af | 1461 | |
7ab12479 JB |
1462 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1463 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1464 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1465 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1466 | If FRAME is t, search all frames.\n\ |
1467 | If FRAME is nil, search only the selected frame.\n\ | |
1468 | If FRAME is a frame, search only that frame.") | |
1469 | (frame) | |
1470 | Lisp_Object frame; | |
7ab12479 JB |
1471 | { |
1472 | register Lisp_Object w; | |
1473 | /* First try for a window that is full-width */ | |
89bca612 | 1474 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1475 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1476 | return w; |
1477 | /* If none of them, try the rest */ | |
89bca612 | 1478 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1479 | } |
1480 | ||
1481 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1482 | "Return the largest window in area.\n\ | |
89bca612 | 1483 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1484 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1485 | If FRAME is t, search all frames.\n\ |
1486 | If FRAME is nil, search only the selected frame.\n\ | |
1487 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1488 | (frame) |
1489 | Lisp_Object frame; | |
7ab12479 JB |
1490 | { |
1491 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1492 | frame); |
7ab12479 JB |
1493 | } |
1494 | ||
1495 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1496 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1497 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1498 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1499 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1500 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1501 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1502 | (buffer, frame) |
1503 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1504 | { |
1505 | buffer = Fget_buffer (buffer); | |
017b2bad | 1506 | if (BUFFERP (buffer)) |
44fa5b1e | 1507 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1508 | else |
1509 | return Qnil; | |
1510 | } | |
1511 | ||
1512 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1513 | 0, 1, "", | |
44fa5b1e | 1514 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1515 | Only the frame WINDOW is on is affected.\n\ |
1516 | This function tries to reduce display jumps\n\ | |
1517 | by keeping the text previously visible in WINDOW\n\ | |
1518 | in the same place on the frame. Doing this depends on\n\ | |
1519 | the value of (window-start WINDOW), so if calling this function\n\ | |
1520 | in a program gives strange scrolling, make sure the window-start\n\ | |
1521 | value is reasonable when this function is called.") | |
7ab12479 JB |
1522 | (window) |
1523 | Lisp_Object window; | |
1524 | { | |
1525 | struct window *w; | |
00d3d838 | 1526 | int startpos; |
7ab12479 JB |
1527 | int top; |
1528 | ||
265a9e55 | 1529 | if (NILP (window)) |
7ab12479 JB |
1530 | window = selected_window; |
1531 | else | |
605be8af | 1532 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1533 | |
1534 | w = XWINDOW (window); | |
a2b38b3c | 1535 | |
00d3d838 KH |
1536 | startpos = marker_position (w->start); |
1537 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1538 | |
a2b38b3c RS |
1539 | if (MINI_WINDOW_P (w) && top > 0) |
1540 | error ("Can't expand minibuffer to full frame"); | |
1541 | ||
70728a80 | 1542 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1543 | |
00d3d838 KH |
1544 | /* Try to minimize scrolling, by setting the window start to the point |
1545 | will cause the text at the old window start to be at the same place | |
1546 | on the frame. But don't try to do this if the window start is | |
1547 | outside the visible portion (as might happen when the display is | |
1548 | not current, due to typeahead). */ | |
1549 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1550 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1551 | { | |
1552 | struct position pos; | |
1553 | struct buffer *obuf = current_buffer; | |
1554 | ||
1555 | Fset_buffer (w->buffer); | |
1556 | /* This computation used to temporarily move point, but that can | |
1557 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1558 | pos = *vmotion (startpos, -top, w); |
00d3d838 KH |
1559 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
1560 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
1561 | || FETCH_CHAR (pos.bufpos - 1) == '\n') ? Qt | |
1562 | : Qnil); | |
80622eec RS |
1563 | /* We need to do this, so that the window-scroll-functions |
1564 | get called. */ | |
1565 | w->force_start = Qt; | |
00d3d838 KH |
1566 | |
1567 | set_buffer_internal (obuf); | |
1568 | } | |
7ab12479 JB |
1569 | return Qnil; |
1570 | } | |
1571 | ||
1572 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1573 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1574 | "Delete all windows showing BUFFER.\n\ |
1575 | Optional second argument FRAME controls which frames are affected.\n\ | |
1576 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1577 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1578 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1579 | If a frame, delete only windows showing BUFFER in that frame.") |
1580 | (buffer, frame) | |
1581 | Lisp_Object buffer, frame; | |
7ab12479 | 1582 | { |
26f6279d JB |
1583 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1584 | expects. */ | |
1585 | if (! FRAMEP (frame)) | |
1586 | frame = NILP (frame) ? Qt : Qnil; | |
26f6279d | 1587 | |
265a9e55 | 1588 | if (!NILP (buffer)) |
7ab12479 JB |
1589 | { |
1590 | buffer = Fget_buffer (buffer); | |
1591 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1592 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1593 | } |
1594 | return Qnil; | |
1595 | } | |
1596 | ||
1597 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1598 | Sreplace_buffer_in_windows, | |
1599 | 1, 1, "bReplace buffer in windows: ", | |
1600 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1601 | (buffer) | |
1602 | Lisp_Object buffer; | |
1603 | { | |
265a9e55 | 1604 | if (!NILP (buffer)) |
7ab12479 JB |
1605 | { |
1606 | buffer = Fget_buffer (buffer); | |
1607 | CHECK_BUFFER (buffer, 0); | |
1608 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1609 | } | |
1610 | return Qnil; | |
1611 | } | |
ff58478b RS |
1612 | |
1613 | /* Replace BUFFER with some other buffer in all windows | |
1614 | of all frames, even those on other keyboards. */ | |
1615 | ||
1616 | void | |
1617 | replace_buffer_in_all_windows (buffer) | |
1618 | Lisp_Object buffer; | |
1619 | { | |
27abb84f | 1620 | #ifdef MULTI_KBOARD |
ff58478b RS |
1621 | Lisp_Object tail, frame; |
1622 | ||
ff58478b RS |
1623 | /* A single call to window_loop won't do the job |
1624 | because it only considers frames on the current keyboard. | |
1625 | So loop manually over frames, and handle each one. */ | |
1626 | FOR_EACH_FRAME (tail, frame) | |
27abb84f | 1627 | window_loop (UNSHOW_BUFFER, buffer, 0, frame); |
ff58478b RS |
1628 | #else |
1629 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1630 | #endif | |
1631 | } | |
7ab12479 JB |
1632 | \f |
1633 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1634 | |
1635 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1636 | might crash Emacs. */ | |
1637 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1638 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1639 | ||
1640 | /* Make sure that window_min_height and window_min_width are | |
1641 | not too small; if they are, set them to safe minima. */ | |
1642 | ||
1643 | static void | |
1644 | check_min_window_sizes () | |
1645 | { | |
1646 | /* Smaller values might permit a crash. */ | |
1647 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1648 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1649 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1650 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1651 | } | |
1652 | ||
1653 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1654 | minimum allowable size. */ | |
605be8af | 1655 | void |
a481b3ea | 1656 | check_frame_size (frame, rows, cols) |
605be8af JB |
1657 | FRAME_PTR frame; |
1658 | int *rows, *cols; | |
a481b3ea | 1659 | { |
628df3bf | 1660 | /* For height, we have to see: |
37962e60 | 1661 | whether the frame has a minibuffer, |
628df3bf JB |
1662 | whether it wants a mode line, and |
1663 | whether it has a menu bar. */ | |
a481b3ea | 1664 | int min_height = |
79f92720 JB |
1665 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1666 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1667 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1668 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1669 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1670 | |
1671 | if (*rows < min_height) | |
1672 | *rows = min_height; | |
1673 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1674 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1675 | } | |
1676 | ||
7ab12479 JB |
1677 | /* Normally the window is deleted if it gets too small. |
1678 | nodelete nonzero means do not do this. | |
1679 | (The caller should check later and do so if appropriate) */ | |
1680 | ||
1681 | set_window_height (window, height, nodelete) | |
1682 | Lisp_Object window; | |
1683 | int height; | |
1684 | int nodelete; | |
1685 | { | |
1686 | register struct window *w = XWINDOW (window); | |
1687 | register struct window *c; | |
1688 | int oheight = XFASTINT (w->height); | |
1689 | int top, pos, lastbot, opos, lastobot; | |
1690 | Lisp_Object child; | |
1691 | ||
a481b3ea JB |
1692 | check_min_window_sizes (); |
1693 | ||
7ab12479 | 1694 | if (!nodelete |
265a9e55 | 1695 | && ! NILP (w->parent) |
7ab12479 JB |
1696 | && height < window_min_height) |
1697 | { | |
1698 | Fdelete_window (window); | |
1699 | return; | |
1700 | } | |
1701 | ||
d834a2e9 | 1702 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1703 | windows_or_buffers_changed++; |
29aeee73 RS |
1704 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1705 | ||
d834a2e9 | 1706 | XSETFASTINT (w->height, height); |
265a9e55 | 1707 | if (!NILP (w->hchild)) |
7ab12479 | 1708 | { |
265a9e55 | 1709 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1710 | { |
1711 | XWINDOW (child)->top = w->top; | |
1712 | set_window_height (child, height, nodelete); | |
1713 | } | |
1714 | } | |
265a9e55 | 1715 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1716 | { |
1717 | lastbot = top = XFASTINT (w->top); | |
1718 | lastobot = 0; | |
265a9e55 | 1719 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1720 | { |
1721 | c = XWINDOW (child); | |
1722 | ||
1723 | opos = lastobot + XFASTINT (c->height); | |
1724 | ||
d834a2e9 | 1725 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1726 | |
1727 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1728 | ||
1729 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1730 | set_window_height (child, pos + top - lastbot, 1); | |
1731 | ||
1732 | /* Now advance child to next window, | |
1733 | and set lastbot if child was not just deleted. */ | |
1734 | lastbot = pos + top; | |
1735 | lastobot = opos; | |
1736 | } | |
1737 | /* Now delete any children that became too small. */ | |
1738 | if (!nodelete) | |
265a9e55 | 1739 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1740 | { |
1741 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1742 | } | |
1743 | } | |
1744 | } | |
1745 | ||
1746 | /* Recursively set width of WINDOW and its inferiors. */ | |
1747 | ||
1748 | set_window_width (window, width, nodelete) | |
1749 | Lisp_Object window; | |
1750 | int width; | |
1751 | int nodelete; | |
1752 | { | |
1753 | register struct window *w = XWINDOW (window); | |
1754 | register struct window *c; | |
1755 | int owidth = XFASTINT (w->width); | |
1756 | int left, pos, lastright, opos, lastoright; | |
1757 | Lisp_Object child; | |
1758 | ||
abdced83 | 1759 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 JB |
1760 | { |
1761 | Fdelete_window (window); | |
1762 | return; | |
1763 | } | |
1764 | ||
d834a2e9 | 1765 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1766 | windows_or_buffers_changed++; |
29aeee73 RS |
1767 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1768 | ||
d834a2e9 | 1769 | XSETFASTINT (w->width, width); |
265a9e55 | 1770 | if (!NILP (w->vchild)) |
7ab12479 | 1771 | { |
265a9e55 | 1772 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1773 | { |
1774 | XWINDOW (child)->left = w->left; | |
1775 | set_window_width (child, width, nodelete); | |
1776 | } | |
1777 | } | |
265a9e55 | 1778 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1779 | { |
1780 | lastright = left = XFASTINT (w->left); | |
1781 | lastoright = 0; | |
265a9e55 | 1782 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1783 | { |
1784 | c = XWINDOW (child); | |
1785 | ||
1786 | opos = lastoright + XFASTINT (c->width); | |
1787 | ||
d834a2e9 | 1788 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1789 | |
1790 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1791 | ||
1792 | /* Inhibit deletion for becoming too small */ | |
1793 | set_window_width (child, pos + left - lastright, 1); | |
1794 | ||
1795 | /* Now advance child to next window, | |
1796 | and set lastright if child was not just deleted. */ | |
1797 | lastright = pos + left, lastoright = opos; | |
1798 | } | |
1799 | /* Delete children that became too small */ | |
1800 | if (!nodelete) | |
265a9e55 | 1801 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1802 | { |
1803 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1804 | } | |
1805 | } | |
1806 | } | |
1807 | \f | |
1d8d96fa | 1808 | int window_select_count; |
7ab12479 | 1809 | |
5b03d3c0 RS |
1810 | Lisp_Object |
1811 | Fset_window_buffer_unwind (obuf) | |
1812 | Lisp_Object obuf; | |
1813 | { | |
1814 | Fset_buffer (obuf); | |
1815 | return Qnil; | |
1816 | } | |
1817 | ||
7ab12479 JB |
1818 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, |
1819 | "Make WINDOW display BUFFER as its contents.\n\ | |
1820 | BUFFER can be a buffer or buffer name.") | |
1821 | (window, buffer) | |
1822 | register Lisp_Object window, buffer; | |
1823 | { | |
1824 | register Lisp_Object tem; | |
1825 | register struct window *w = decode_window (window); | |
5b03d3c0 | 1826 | int count = specpdl_ptr - specpdl; |
7ab12479 JB |
1827 | |
1828 | buffer = Fget_buffer (buffer); | |
1829 | CHECK_BUFFER (buffer, 1); | |
1830 | ||
265a9e55 | 1831 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1832 | error ("Attempt to display deleted buffer"); |
1833 | ||
1834 | tem = w->buffer; | |
265a9e55 | 1835 | if (NILP (tem)) |
7ab12479 JB |
1836 | error ("Window is deleted"); |
1837 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1838 | is first being set up. */ | |
1839 | { | |
265a9e55 | 1840 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1841 | error ("Window is dedicated to `%s'", |
1842 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1843 | |
1844 | unshow_buffer (w); | |
1845 | } | |
1846 | ||
1847 | w->buffer = buffer; | |
86e48436 RS |
1848 | |
1849 | if (EQ (window, selected_window)) | |
1850 | XBUFFER (w->buffer)->last_selected_window = window; | |
1851 | ||
d834a2e9 | 1852 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1853 | w->window_end_valid = Qnil; |
dba06815 | 1854 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
1855 | Fset_marker (w->pointm, |
1856 | make_number (BUF_PT (XBUFFER (buffer))), | |
1857 | buffer); | |
1858 | set_marker_restricted (w->start, | |
1859 | make_number (XBUFFER (buffer)->last_window_start), | |
1860 | buffer); | |
1861 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1862 | w->force_start = Qnil; |
d834a2e9 | 1863 | XSETFASTINT (w->last_modified, 0); |
7ab12479 | 1864 | windows_or_buffers_changed++; |
5b03d3c0 RS |
1865 | |
1866 | /* We must select BUFFER for running the window-scroll-functions. | |
1867 | If WINDOW is selected, switch permanently. | |
1868 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
1869 | if (EQ (window, selected_window)) |
1870 | Fset_buffer (buffer); | |
5b03d3c0 RS |
1871 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
1872 | because that might itself be a local variable. */ | |
1873 | else if (window_initialized) | |
1874 | { | |
1875 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
1876 | Fset_buffer (buffer); | |
1877 | } | |
1878 | ||
dba06815 RS |
1879 | if (! NILP (Vwindow_scroll_functions)) |
1880 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1881 | Fmarker_position (w->start)); | |
7ab12479 | 1882 | |
5b03d3c0 RS |
1883 | unbind_to (count, Qnil); |
1884 | ||
7ab12479 JB |
1885 | return Qnil; |
1886 | } | |
1887 | ||
1888 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1889 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1890 | The main editor command loop selects the buffer of the selected window\n\ | |
1891 | before each command.") | |
1892 | (window) | |
1893 | register Lisp_Object window; | |
1894 | { | |
1895 | register struct window *w; | |
1896 | register struct window *ow = XWINDOW (selected_window); | |
1897 | ||
605be8af | 1898 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1899 | |
1900 | w = XWINDOW (window); | |
1901 | ||
265a9e55 | 1902 | if (NILP (w->buffer)) |
7ab12479 JB |
1903 | error ("Trying to select deleted window or non-leaf window"); |
1904 | ||
d834a2e9 | 1905 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
1906 | if (EQ (window, selected_window)) |
1907 | return window; | |
1908 | ||
1909 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1910 | ow->buffer); | |
1911 | ||
1912 | selected_window = window; | |
44fa5b1e | 1913 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) |
7ab12479 | 1914 | { |
44fa5b1e | 1915 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
1916 | /* Use this rather than Fhandle_switch_frame |
1917 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
1918 | move around in the state where a minibuffer in a separate | |
1919 | frame is active. */ | |
1920 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1921 | } |
1922 | else | |
44fa5b1e | 1923 | selected_frame->selected_window = window; |
7ab12479 JB |
1924 | |
1925 | record_buffer (w->buffer); | |
1926 | Fset_buffer (w->buffer); | |
1927 | ||
86e48436 RS |
1928 | XBUFFER (w->buffer)->last_selected_window = window; |
1929 | ||
7ab12479 JB |
1930 | /* Go to the point recorded in the window. |
1931 | This is important when the buffer is in more | |
1932 | than one window. It also matters when | |
1933 | redisplay_window has altered point after scrolling, | |
1934 | because it makes the change only in the window. */ | |
1935 | { | |
1936 | register int new_point = marker_position (w->pointm); | |
1937 | if (new_point < BEGV) | |
1938 | SET_PT (BEGV); | |
a9c95e08 | 1939 | else if (new_point > ZV) |
7ab12479 JB |
1940 | SET_PT (ZV); |
1941 | else | |
1942 | SET_PT (new_point); | |
1943 | } | |
1944 | ||
1945 | windows_or_buffers_changed++; | |
1946 | return window; | |
1947 | } | |
1948 | ||
441a127e RS |
1949 | /* Deiconify the frame containing the window WINDOW, |
1950 | unless it is the selected frame; | |
1951 | then return WINDOW. | |
1952 | ||
1953 | The reason for the exception for the selected frame | |
1954 | is that it seems better not to change the selected frames visibility | |
1955 | merely because of displaying a different buffer in it. | |
1956 | The deiconification is useful when a buffer gets shown in | |
1957 | another frame that you were not using lately. */ | |
d07f802a RS |
1958 | |
1959 | static Lisp_Object | |
1960 | display_buffer_1 (window) | |
1961 | Lisp_Object window; | |
1962 | { | |
d07f802a RS |
1963 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
1964 | FRAME_SAMPLE_VISIBILITY (f); | |
60117126 RS |
1965 | if (f != selected_frame) |
1966 | { | |
1967 | if (FRAME_ICONIFIED_P (f)) | |
1968 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
37962e60 | 1969 | else if (FRAME_VISIBLE_P (f)) |
60117126 RS |
1970 | Fraise_frame (WINDOW_FRAME (XWINDOW (window))); |
1971 | } | |
d07f802a RS |
1972 | return window; |
1973 | } | |
1974 | ||
35aaf00c | 1975 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
869e65bb | 1976 | "bDisplay buffer: \nP", |
7ab12479 JB |
1977 | "Make BUFFER appear in some window but don't select it.\n\ |
1978 | BUFFER can be a buffer or a buffer name.\n\ | |
1979 | If BUFFER is shown already in some window, just use that one,\n\ | |
1980 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 1981 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 1982 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 RS |
1983 | Returns the window displaying BUFFER.\n\ |
1984 | \n\ | |
1985 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
1986 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
1987 | buffer names are handled.") | |
7ab12479 JB |
1988 | (buffer, not_this_window) |
1989 | register Lisp_Object buffer, not_this_window; | |
1990 | { | |
a90712c2 | 1991 | register Lisp_Object window, tem; |
7ab12479 JB |
1992 | |
1993 | buffer = Fget_buffer (buffer); | |
1994 | CHECK_BUFFER (buffer, 0); | |
1995 | ||
265a9e55 | 1996 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1997 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1998 | ||
265a9e55 | 1999 | if (NILP (not_this_window) |
7ab12479 | 2000 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2001 | return display_buffer_1 (selected_window); |
7ab12479 | 2002 | |
855d8627 RS |
2003 | /* See if the user has specified this buffer should appear |
2004 | in the selected window. */ | |
2005 | if (NILP (not_this_window)) | |
2006 | { | |
2007 | tem = Fmember (XBUFFER (buffer)->name, Vsame_window_buffer_names); | |
2008 | if (!NILP (tem)) | |
c63dc4a2 RS |
2009 | { |
2010 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2011 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2012 | } |
855d8627 RS |
2013 | |
2014 | tem = Fassoc (XBUFFER (buffer)->name, Vsame_window_buffer_names); | |
2015 | if (!NILP (tem)) | |
c63dc4a2 RS |
2016 | { |
2017 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2018 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2019 | } |
855d8627 RS |
2020 | |
2021 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCONS (tem)->cdr) | |
2022 | { | |
2023 | Lisp_Object car = XCONS (tem)->car; | |
2024 | if (STRINGP (car) | |
2025 | && fast_string_match (car, XBUFFER (buffer)->name) >= 0) | |
c63dc4a2 RS |
2026 | { |
2027 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2028 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2029 | } |
855d8627 RS |
2030 | else if (CONSP (car) |
2031 | && STRINGP (XCONS (car)->car) | |
2032 | && fast_string_match (XCONS (car)->car, | |
2033 | XBUFFER (buffer)->name) >= 0) | |
c63dc4a2 RS |
2034 | { |
2035 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2036 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2037 | } |
855d8627 RS |
2038 | } |
2039 | } | |
2040 | ||
e8edb3ae | 2041 | /* If pop_up_frames, |
73dc5198 KH |
2042 | look for a window showing BUFFER on any visible or iconified frame. |
2043 | Otherwise search only the current frame. */ | |
2044 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
2045 | XSETFASTINT (tem, 0); | |
2046 | else | |
73dc5198 KH |
2047 | XSETFRAME (tem, last_nonminibuf_frame); |
2048 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
2049 | if (!NILP (window) |
2050 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 2051 | { |
d07f802a | 2052 | return display_buffer_1 (window); |
f812f9c6 | 2053 | } |
7ab12479 | 2054 | |
a90712c2 RS |
2055 | /* Certain buffer names get special handling. */ |
2056 | if (! NILP (Vspecial_display_function)) | |
2057 | { | |
2058 | tem = Fmember (XBUFFER (buffer)->name, Vspecial_display_buffer_names); | |
2059 | if (!NILP (tem)) | |
2060 | return call1 (Vspecial_display_function, buffer); | |
2061 | ||
0a952b57 RS |
2062 | tem = Fassoc (XBUFFER (buffer)->name, Vspecial_display_buffer_names); |
2063 | if (!NILP (tem)) | |
2064 | return call2 (Vspecial_display_function, buffer, XCONS (tem)->cdr); | |
37962e60 | 2065 | |
a90712c2 | 2066 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCONS (tem)->cdr) |
0a952b57 RS |
2067 | { |
2068 | Lisp_Object car = XCONS (tem)->car; | |
2069 | if (STRINGP (car) | |
2070 | && fast_string_match (car, XBUFFER (buffer)->name) >= 0) | |
2071 | return call1 (Vspecial_display_function, buffer); | |
2072 | else if (CONSP (car) | |
2073 | && STRINGP (XCONS (car)->car) | |
2074 | && fast_string_match (XCONS (car)->car, | |
2075 | XBUFFER (buffer)->name) >= 0) | |
2076 | return call2 (Vspecial_display_function, | |
2077 | buffer, | |
2078 | XCONS (car)->cdr); | |
2079 | } | |
a90712c2 RS |
2080 | } |
2081 | ||
44fa5b1e JB |
2082 | /* If there are no frames open that have more than a minibuffer, |
2083 | we need to create a new frame. */ | |
2084 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2085 | { |
a90712c2 | 2086 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2087 | Fset_window_buffer (window, buffer); |
d07f802a | 2088 | return display_buffer_1 (window); |
7ab12479 | 2089 | } |
7ab12479 | 2090 | |
43bad991 | 2091 | if (pop_up_windows |
44fa5b1e | 2092 | || FRAME_MINIBUF_ONLY_P (selected_frame) |
cee67da9 RS |
2093 | /* If the current frame is a special display frame, |
2094 | don't try to reuse its windows. */ | |
2095 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 | 2096 | ) |
7ab12479 | 2097 | { |
12cae7c0 KH |
2098 | Lisp_Object frames; |
2099 | ||
37962e60 | 2100 | frames = Qnil; |
44fa5b1e | 2101 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) |
74112613 | 2102 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2103 | /* Don't try to create a window if would get an error */ |
2104 | if (split_height_threshold < window_min_height << 1) | |
2105 | split_height_threshold = window_min_height << 1; | |
2106 | ||
cee67da9 RS |
2107 | /* Note that both Fget_largest_window and Fget_lru_window |
2108 | ignore minibuffers and dedicated windows. | |
2109 | This means they can return nil. */ | |
7ab12479 | 2110 | |
cee67da9 RS |
2111 | /* If the frame we would try to split cannot be split, |
2112 | try other frames. */ | |
2113 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
2114 | : last_nonminibuf_frame)) | |
2115 | { | |
2116 | /* Try visible frames first. */ | |
2117 | window = Fget_largest_window (Qvisible); | |
2118 | /* If that didn't work, try iconified frames. */ | |
2119 | if (NILP (window)) | |
2120 | window = Fget_largest_window (make_number (0)); | |
2121 | if (NILP (window)) | |
2122 | window = Fget_largest_window (Qt); | |
2123 | } | |
2124 | else | |
2125 | window = Fget_largest_window (frames); | |
2126 | ||
92cca945 RS |
2127 | /* If we got a tall enough full-width window that can be split, |
2128 | split it. */ | |
265a9e55 | 2129 | if (!NILP (window) |
92cca945 | 2130 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2131 | && window_height (window) >= split_height_threshold |
535e0b8e JB |
2132 | && (XFASTINT (XWINDOW (window)->width) |
2133 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) | |
7ab12479 JB |
2134 | window = Fsplit_window (window, Qnil, Qnil); |
2135 | else | |
2136 | { | |
1942f68f RS |
2137 | Lisp_Object upper, lower, other; |
2138 | ||
44fa5b1e | 2139 | window = Fget_lru_window (frames); |
92cca945 RS |
2140 | /* If the LRU window is selected, and big enough, |
2141 | and can be split, split it. */ | |
cee67da9 | 2142 | if (!NILP (window) |
92cca945 | 2143 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2144 | && (EQ (window, selected_window) |
2145 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2146 | && window_height (window) >= window_min_height << 1) |
2147 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 RS |
2148 | /* If Fget_lru_window returned nil, try other approaches. */ |
2149 | /* Try visible frames first. */ | |
2150 | if (NILP (window)) | |
2151 | window = Fget_largest_window (Qvisible); | |
2152 | /* If that didn't work, try iconified frames. */ | |
2153 | if (NILP (window)) | |
2154 | window = Fget_largest_window (make_number (0)); | |
2155 | /* Try invisible frames. */ | |
2156 | if (NILP (window)) | |
2157 | window = Fget_largest_window (Qt); | |
2158 | /* As a last resort, make a new frame. */ | |
2159 | if (NILP (window)) | |
2160 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2161 | /* If window appears above or below another, |
2162 | even out their heights. */ | |
cac66e4f | 2163 | other = upper = lower = Qnil; |
1942f68f RS |
2164 | if (!NILP (XWINDOW (window)->prev)) |
2165 | other = upper = XWINDOW (window)->prev, lower = window; | |
2166 | if (!NILP (XWINDOW (window)->next)) | |
2167 | other = lower = XWINDOW (window)->next, upper = window; | |
2168 | if (!NILP (other) | |
2169 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
2170 | && XWINDOW (other)->top != XWINDOW (window)->top | |
2171 | && XWINDOW (other)->height > XWINDOW (window)->height) | |
2172 | { | |
2173 | int total = XWINDOW (other)->height + XWINDOW (window)->height; | |
8d77c0c8 KH |
2174 | Lisp_Object old_selected_window; |
2175 | old_selected_window = selected_window; | |
1942f68f | 2176 | |
8d77c0c8 | 2177 | selected_window = upper; |
1942f68f RS |
2178 | change_window_height (total / 2 - XWINDOW (upper)->height, 0); |
2179 | selected_window = old_selected_window; | |
2180 | } | |
7ab12479 JB |
2181 | } |
2182 | } | |
2183 | else | |
2184 | window = Fget_lru_window (Qnil); | |
2185 | ||
2186 | Fset_window_buffer (window, buffer); | |
d07f802a | 2187 | return display_buffer_1 (window); |
7ab12479 JB |
2188 | } |
2189 | ||
2190 | void | |
2191 | temp_output_buffer_show (buf) | |
2192 | register Lisp_Object buf; | |
2193 | { | |
2194 | register struct buffer *old = current_buffer; | |
2195 | register Lisp_Object window; | |
2196 | register struct window *w; | |
2197 | ||
2198 | Fset_buffer (buf); | |
c6367666 | 2199 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2200 | BEGV = BEG; |
2201 | ZV = Z; | |
2202 | SET_PT (BEG); | |
1479ef51 | 2203 | XBUFFER (buf)->clip_changed = 1; |
7ab12479 JB |
2204 | set_buffer_internal (old); |
2205 | ||
2206 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2207 | call1 (Vtemp_buffer_show_function, buf); | |
2208 | else | |
2209 | { | |
2210 | window = Fdisplay_buffer (buf, Qnil); | |
2211 | ||
44fa5b1e JB |
2212 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) |
2213 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7ab12479 JB |
2214 | Vminibuf_scroll_window = window; |
2215 | w = XWINDOW (window); | |
d834a2e9 | 2216 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
2217 | set_marker_restricted (w->start, make_number (1), buf); |
2218 | set_marker_restricted (w->pointm, make_number (1), buf); | |
a58ec57d | 2219 | |
37962e60 | 2220 | /* Run temp-buffer-show-hook, with the chosen window selected. */ |
f52cca03 | 2221 | if (!NILP (Vrun_hooks)) |
2cccc823 | 2222 | { |
f52cca03 RS |
2223 | Lisp_Object tem; |
2224 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2225 | if (!NILP (tem)) |
2226 | { | |
f52cca03 RS |
2227 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2228 | if (!NILP (tem)) | |
2229 | { | |
2230 | int count = specpdl_ptr - specpdl; | |
2cccc823 | 2231 | |
f52cca03 RS |
2232 | /* Select the window that was chosen, for running the hook. */ |
2233 | record_unwind_protect (Fset_window_configuration, | |
2234 | Fcurrent_window_configuration (Qnil)); | |
2cccc823 | 2235 | |
f52cca03 RS |
2236 | Fselect_window (window); |
2237 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
2238 | unbind_to (count, Qnil); | |
2239 | } | |
2cccc823 RS |
2240 | } |
2241 | } | |
2242 | } | |
7ab12479 JB |
2243 | } |
2244 | \f | |
2245 | static | |
2246 | make_dummy_parent (window) | |
2247 | Lisp_Object window; | |
2248 | { | |
cffec418 | 2249 | Lisp_Object new; |
7ab12479 | 2250 | register struct window *o, *p; |
cffec418 KH |
2251 | register struct Lisp_Vector *vec; |
2252 | int i; | |
7ab12479 | 2253 | |
cffec418 KH |
2254 | o = XWINDOW (window); |
2255 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2256 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2257 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2258 | vec->size = VECSIZE (struct window); | |
2259 | p = (struct window *)vec; | |
2260 | XSETWINDOW (new, p); | |
7ab12479 | 2261 | |
d834a2e9 | 2262 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2263 | |
2264 | /* Put new into window structure in place of window */ | |
2265 | replace_window (window, new); | |
2266 | ||
2267 | o->next = Qnil; | |
2268 | o->prev = Qnil; | |
2269 | o->vchild = Qnil; | |
2270 | o->hchild = Qnil; | |
2271 | o->parent = new; | |
2272 | ||
2273 | p->start = Qnil; | |
2274 | p->pointm = Qnil; | |
2275 | p->buffer = Qnil; | |
2276 | } | |
2277 | ||
2278 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2279 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2280 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 2281 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
7ab12479 | 2282 | and put SIZE columns in the first of the pair.") |
77ae0fe3 KH |
2283 | (window, size, horflag) |
2284 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
2285 | { |
2286 | register Lisp_Object new; | |
2287 | register struct window *o, *p; | |
c0807608 | 2288 | FRAME_PTR fo; |
77ae0fe3 | 2289 | register int size_int; |
7ab12479 | 2290 | |
265a9e55 | 2291 | if (NILP (window)) |
7ab12479 JB |
2292 | window = selected_window; |
2293 | else | |
605be8af | 2294 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2295 | |
2296 | o = XWINDOW (window); | |
c0807608 | 2297 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 2298 | |
77ae0fe3 | 2299 | if (NILP (size)) |
7ab12479 | 2300 | { |
265a9e55 | 2301 | if (!NILP (horflag)) |
c0807608 KH |
2302 | /* Calculate the size of the left-hand window, by dividing |
2303 | the usable space in columns by two. */ | |
a59fed7e | 2304 | size_int = XFASTINT (o->width) >> 1; |
7ab12479 | 2305 | else |
77ae0fe3 | 2306 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
2307 | } |
2308 | else | |
2309 | { | |
77ae0fe3 KH |
2310 | CHECK_NUMBER (size, 1); |
2311 | size_int = XINT (size); | |
7ab12479 JB |
2312 | } |
2313 | ||
2314 | if (MINI_WINDOW_P (o)) | |
2315 | error ("Attempt to split minibuffer window"); | |
c0807608 | 2316 | else if (FRAME_NO_SPLIT_P (fo)) |
44fa5b1e | 2317 | error ("Attempt to split unsplittable frame"); |
7ab12479 | 2318 | |
a481b3ea | 2319 | check_min_window_sizes (); |
7ab12479 | 2320 | |
265a9e55 | 2321 | if (NILP (horflag)) |
7ab12479 | 2322 | { |
77ae0fe3 KH |
2323 | if (size_int < window_min_height) |
2324 | error ("Window height %d too small (after splitting)", size_int); | |
2325 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 2326 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 2327 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
2328 | if (NILP (o->parent) |
2329 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2330 | { |
2331 | make_dummy_parent (window); | |
2332 | new = o->parent; | |
2333 | XWINDOW (new)->vchild = window; | |
2334 | } | |
2335 | } | |
2336 | else | |
2337 | { | |
77ae0fe3 KH |
2338 | if (size_int < window_min_width) |
2339 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
2340 | |
2341 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 2342 | error ("Window width %d too small (after splitting)", |
a59fed7e | 2343 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
2344 | if (NILP (o->parent) |
2345 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2346 | { |
2347 | make_dummy_parent (window); | |
2348 | new = o->parent; | |
2349 | XWINDOW (new)->hchild = window; | |
2350 | } | |
2351 | } | |
2352 | ||
2353 | /* Now we know that window's parent is a vertical combination | |
2354 | if we are dividing vertically, or a horizontal combination | |
2355 | if we are making side-by-side windows */ | |
2356 | ||
2357 | windows_or_buffers_changed++; | |
c0807608 | 2358 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
2359 | new = make_window (); |
2360 | p = XWINDOW (new); | |
2361 | ||
44fa5b1e | 2362 | p->frame = o->frame; |
7ab12479 | 2363 | p->next = o->next; |
265a9e55 | 2364 | if (!NILP (p->next)) |
7ab12479 JB |
2365 | XWINDOW (p->next)->prev = new; |
2366 | p->prev = window; | |
2367 | o->next = new; | |
2368 | p->parent = o->parent; | |
2369 | p->buffer = Qt; | |
2370 | ||
2371 | Fset_window_buffer (new, o->buffer); | |
2372 | ||
44fa5b1e | 2373 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2374 | |
265a9e55 | 2375 | if (!NILP (horflag)) |
7ab12479 JB |
2376 | { |
2377 | p->height = o->height; | |
2378 | p->top = o->top; | |
a59fed7e | 2379 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
2380 | XSETFASTINT (o->width, size_int); |
2381 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
2382 | } |
2383 | else | |
2384 | { | |
2385 | p->left = o->left; | |
2386 | p->width = o->width; | |
77ae0fe3 KH |
2387 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
2388 | XSETFASTINT (o->height, size_int); | |
2389 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
2390 | } |
2391 | ||
2392 | return new; | |
2393 | } | |
2394 | \f | |
2395 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2396 | "Make current window ARG lines bigger.\n\ | |
2397 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
2398 | (arg, side) |
2399 | register Lisp_Object arg, side; | |
7ab12479 | 2400 | { |
413430c5 EN |
2401 | CHECK_NUMBER (arg, 0); |
2402 | change_window_height (XINT (arg), !NILP (side)); | |
7ab12479 JB |
2403 | return Qnil; |
2404 | } | |
2405 | ||
2406 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2407 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
2408 | From program, optional second arg non-nil means shrink sideways arg columns.") |
2409 | (arg, side) | |
2410 | register Lisp_Object arg, side; | |
7ab12479 | 2411 | { |
413430c5 EN |
2412 | CHECK_NUMBER (arg, 0); |
2413 | change_window_height (-XINT (arg), !NILP (side)); | |
7ab12479 JB |
2414 | return Qnil; |
2415 | } | |
2416 | ||
2417 | int | |
2418 | window_height (window) | |
2419 | Lisp_Object window; | |
2420 | { | |
2421 | register struct window *p = XWINDOW (window); | |
2422 | return XFASTINT (p->height); | |
2423 | } | |
2424 | ||
2425 | int | |
2426 | window_width (window) | |
2427 | Lisp_Object window; | |
2428 | { | |
2429 | register struct window *p = XWINDOW (window); | |
2430 | return XFASTINT (p->width); | |
2431 | } | |
2432 | ||
05c2896a JB |
2433 | #define MINSIZE(w) \ |
2434 | (widthflag \ | |
2435 | ? window_min_width \ | |
2436 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2437 | |
2438 | #define CURBEG(w) \ | |
05c2896a | 2439 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2440 | |
2441 | #define CURSIZE(w) \ | |
05c2896a | 2442 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2443 | |
2444 | /* Unlike set_window_height, this function | |
2445 | also changes the heights of the siblings so as to | |
2446 | keep everything consistent. */ | |
2447 | ||
2448 | change_window_height (delta, widthflag) | |
2449 | register int delta; | |
2450 | int widthflag; | |
2451 | { | |
2452 | register Lisp_Object parent; | |
2453 | Lisp_Object window; | |
2454 | register struct window *p; | |
2455 | int *sizep; | |
2456 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2457 | register int (*setsizefun) () = (widthflag | |
2458 | ? set_window_width | |
2459 | : set_window_height); | |
2460 | ||
a481b3ea | 2461 | check_min_window_sizes (); |
7ab12479 JB |
2462 | |
2463 | window = selected_window; | |
2464 | while (1) | |
2465 | { | |
2466 | p = XWINDOW (window); | |
2467 | parent = p->parent; | |
265a9e55 | 2468 | if (NILP (parent)) |
7ab12479 JB |
2469 | { |
2470 | if (widthflag) | |
2471 | error ("No other window to side of this one"); | |
2472 | break; | |
2473 | } | |
265a9e55 JB |
2474 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2475 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2476 | break; |
2477 | window = parent; | |
2478 | } | |
2479 | ||
05c2896a | 2480 | sizep = &CURSIZE (window); |
7ab12479 | 2481 | |
7ab12479 JB |
2482 | { |
2483 | register int maxdelta; | |
7ab12479 | 2484 | |
265a9e55 JB |
2485 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2486 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2487 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2488 | /* This is a frame with only one window, a minibuffer-only |
2489 | or a minibufferless frame. */ | |
d5783c40 | 2490 | : (delta = 0)); |
7ab12479 JB |
2491 | |
2492 | if (delta > maxdelta) | |
2493 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2494 | the full frame, or make the only window aside from the |
2495 | minibuffer the full frame. */ | |
7ab12479 | 2496 | delta = maxdelta; |
6b54027b | 2497 | } |
d5783c40 | 2498 | |
6b54027b RS |
2499 | if (*sizep + delta < MINSIZE (window)) |
2500 | { | |
2501 | Fdelete_window (window); | |
d5783c40 | 2502 | return; |
6b54027b RS |
2503 | } |
2504 | ||
2505 | if (delta == 0) | |
2506 | return; | |
7ab12479 | 2507 | |
6b54027b RS |
2508 | if (!NILP (p->next) |
2509 | && (*sizefun) (p->next) - delta >= MINSIZE (p->next)) | |
7ab12479 JB |
2510 | { |
2511 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
2512 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 2513 | CURBEG (p->next) += delta; |
7ab12479 JB |
2514 | /* This does not change size of p->next, |
2515 | but it propagates the new top edge to its children */ | |
2516 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
2517 | } | |
6b54027b RS |
2518 | else if (!NILP (p->prev) |
2519 | && (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) | |
7ab12479 JB |
2520 | { |
2521 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 2522 | CURBEG (window) -= delta; |
7ab12479 JB |
2523 | (*setsizefun) (window, *sizep + delta, 0); |
2524 | } | |
2525 | else | |
2526 | { | |
2527 | register int delta1; | |
2528 | register int opht = (*sizefun) (parent); | |
2529 | ||
2530 | /* If trying to grow this window to or beyond size of the parent, | |
2531 | make delta1 so big that, on shrinking back down, | |
2532 | all the siblings end up with less than one line and are deleted. */ | |
2533 | if (opht <= *sizep + delta) | |
2534 | delta1 = opht * opht * 2; | |
2535 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2536 | lines to this window and to the parent, and then shrink | |
2537 | the parent back to its original size, the new proportional | |
2538 | size of this window will increase by delta. */ | |
2539 | else | |
2540 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2541 | ||
2542 | /* Add delta1 lines or columns to this window, and to the parent, | |
2543 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2544 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2545 | (*setsizefun) (window, *sizep + delta1, 0); |
2546 | ||
2547 | /* Squeeze out delta1 lines or columns from our parent, | |
2548 | shriking this window and siblings proportionately. | |
2549 | This brings parent back to correct size. | |
2550 | Delta1 was calculated so this makes this window the desired size, | |
2551 | taking it all out of the siblings. */ | |
2552 | (*setsizefun) (parent, opht, 0); | |
2553 | } | |
2554 | ||
d834a2e9 | 2555 | XSETFASTINT (p->last_modified, 0); |
7ab12479 JB |
2556 | } |
2557 | #undef MINSIZE | |
2558 | #undef CURBEG | |
2559 | #undef CURSIZE | |
2560 | ||
2561 | \f | |
2562 | /* Return number of lines of text (not counting mode line) in W. */ | |
2563 | ||
2564 | int | |
2565 | window_internal_height (w) | |
2566 | struct window *w; | |
2567 | { | |
2568 | int ht = XFASTINT (w->height); | |
2569 | ||
2570 | if (MINI_WINDOW_P (w)) | |
2571 | return ht; | |
2572 | ||
265a9e55 JB |
2573 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2574 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2575 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2576 | return ht - 1; |
2577 | ||
2578 | return ht; | |
2579 | } | |
2580 | ||
535e0b8e JB |
2581 | |
2582 | /* Return the number of columns in W. | |
a3c87d4e | 2583 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2584 | separating W from the sibling to its right. */ |
2585 | int | |
2586 | window_internal_width (w) | |
2587 | struct window *w; | |
2588 | { | |
2589 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
2590 | int left = XINT (w->left); | |
2591 | int width = XINT (w->width); | |
2592 | ||
2593 | /* If this window is flush against the right edge of the frame, its | |
2594 | internal width is its full width. */ | |
2595 | if (left + width >= FRAME_WIDTH (f)) | |
2596 | return width; | |
2597 | ||
2598 | /* If we are not flush right, then our rightmost columns are | |
2599 | occupied by some sort of separator. */ | |
2600 | ||
a3c87d4e JB |
2601 | /* Scroll bars occupy a few columns. */ |
2602 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2603 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2604 | |
2605 | /* The column of `|' characters separating side-by-side windows | |
2606 | occupies one column only. */ | |
2607 | return width - 1; | |
2608 | } | |
2609 | ||
2610 | ||
7ab12479 JB |
2611 | /* Scroll contents of window WINDOW up N lines. */ |
2612 | ||
2613 | void | |
f8026fd8 | 2614 | window_scroll (window, n, noerror) |
7ab12479 JB |
2615 | Lisp_Object window; |
2616 | int n; | |
f8026fd8 | 2617 | int noerror; |
7ab12479 JB |
2618 | { |
2619 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2620 | register int opoint = PT; |
7ab12479 JB |
2621 | register int pos; |
2622 | register int ht = window_internal_height (w); | |
2623 | register Lisp_Object tem; | |
2624 | int lose; | |
2625 | Lisp_Object bolp, nmoved; | |
2626 | ||
0a1f771a | 2627 | /* Always set force_start so that redisplay_window will run |
b4d57b9d | 2628 | the window-scroll-functions. */ |
0a1f771a RS |
2629 | w->force_start = Qt; |
2630 | ||
d834a2e9 | 2631 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2632 | tem = Fpos_visible_in_window_p (tem, window); |
2633 | ||
265a9e55 | 2634 | if (NILP (tem)) |
7ab12479 | 2635 | { |
cd2be1dd | 2636 | Fvertical_motion (make_number (- (ht / 2)), window); |
d834a2e9 | 2637 | XSETFASTINT (tem, PT); |
7ab12479 | 2638 | Fset_marker (w->start, tem, w->buffer); |
7ab12479 JB |
2639 | } |
2640 | ||
2641 | SET_PT (marker_position (w->start)); | |
5ce7b543 | 2642 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2643 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2644 | pos = PT; |
7ab12479 JB |
2645 | bolp = Fbolp (); |
2646 | SET_PT (opoint); | |
2647 | ||
2648 | if (lose) | |
f8026fd8 JB |
2649 | { |
2650 | if (noerror) | |
2651 | return; | |
2652 | else | |
2653 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2654 | } | |
7ab12479 JB |
2655 | |
2656 | if (pos < ZV) | |
7ab12479 JB |
2657 | { |
2658 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2659 | w->start_at_line_beg = bolp; | |
2660 | w->update_mode_line = Qt; | |
d834a2e9 | 2661 | XSETFASTINT (w->last_modified, 0); |
7ab12479 JB |
2662 | if (pos > opoint) |
2663 | SET_PT (pos); | |
2664 | if (n < 0) | |
2665 | { | |
2666 | SET_PT (pos); | |
540b6aa0 | 2667 | tem = Fvertical_motion (make_number (ht), window); |
5ce7b543 | 2668 | if (PT > opoint || XFASTINT (tem) < ht) |
7ab12479 JB |
2669 | SET_PT (opoint); |
2670 | else | |
540b6aa0 | 2671 | Fvertical_motion (make_number (-1), window); |
7ab12479 JB |
2672 | } |
2673 | } | |
2674 | else | |
f8026fd8 JB |
2675 | { |
2676 | if (noerror) | |
2677 | return; | |
2678 | else | |
2679 | Fsignal (Qend_of_buffer, Qnil); | |
2680 | } | |
7ab12479 JB |
2681 | } |
2682 | \f | |
2683 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2684 | ||
2685 | static void | |
2686 | scroll_command (n, direction) | |
2687 | register Lisp_Object n; | |
2688 | int direction; | |
2689 | { | |
2690 | register int defalt; | |
2691 | int count = specpdl_ptr - specpdl; | |
2692 | ||
95605e15 JB |
2693 | /* If selected window's buffer isn't current, make it current for the moment. |
2694 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2695 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2696 | { |
2697 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2698 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2699 | } | |
7ab12479 JB |
2700 | |
2701 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2702 | - next_screen_context_lines); | |
2703 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2704 | ||
265a9e55 | 2705 | if (NILP (n)) |
f8026fd8 | 2706 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2707 | else if (EQ (n, Qminus)) |
f8026fd8 | 2708 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2709 | else |
2710 | { | |
2711 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2712 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2713 | } |
95605e15 JB |
2714 | |
2715 | unbind_to (count, Qnil); | |
7ab12479 JB |
2716 | } |
2717 | ||
2718 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2719 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2720 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2721 | Negative ARG means scroll downward.\n\ |
7ab12479 | 2722 | When calling from a program, supply a number as argument or nil.") |
413430c5 EN |
2723 | (arg) |
2724 | Lisp_Object arg; | |
7ab12479 | 2725 | { |
413430c5 | 2726 | scroll_command (arg, 1); |
7ab12479 JB |
2727 | return Qnil; |
2728 | } | |
2729 | ||
2730 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2731 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2732 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2733 | Negative ARG means scroll upward.\n\ |
7ab12479 | 2734 | When calling from a program, supply a number as argument or nil.") |
413430c5 EN |
2735 | (arg) |
2736 | Lisp_Object arg; | |
7ab12479 | 2737 | { |
413430c5 | 2738 | scroll_command (arg, -1); |
7ab12479 JB |
2739 | return Qnil; |
2740 | } | |
ccd0664b RS |
2741 | \f |
2742 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
2743 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 2744 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
2745 | specifies the window.\n\ |
2746 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
2747 | showing that buffer is used.") | |
eb16ec06 | 2748 | () |
7ab12479 | 2749 | { |
ccd0664b | 2750 | Lisp_Object window; |
7ab12479 JB |
2751 | |
2752 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2753 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2754 | window = Vminibuf_scroll_window; |
2755 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2756 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2757 | { |
2758 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2759 | if (NILP (window)) |
7ab12479 JB |
2760 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2761 | } | |
2762 | else | |
dbc4e1c1 JB |
2763 | { |
2764 | /* Nothing specified; look for a neighboring window on the same | |
2765 | frame. */ | |
2766 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2767 | ||
2768 | if (EQ (window, selected_window)) | |
2769 | /* That didn't get us anywhere; look for a window on another | |
2770 | visible frame. */ | |
2771 | do | |
2772 | window = Fnext_window (window, Qnil, Qt); | |
2773 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2774 | && ! EQ (window, selected_window)); | |
2775 | } | |
2776 | ||
605be8af | 2777 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2778 | |
2779 | if (EQ (window, selected_window)) | |
2780 | error ("There is no other window"); | |
2781 | ||
ccd0664b RS |
2782 | return window; |
2783 | } | |
2784 | ||
2785 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2786 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
2787 | The next window is the one below the current one; or the one at the top\n\ | |
2788 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
2789 | When calling from a program, supply a number as argument or nil.\n\ | |
2790 | \n\ | |
2791 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
2792 | specifies the window to scroll.\n\ | |
2793 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2794 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
2795 | (arg) |
2796 | register Lisp_Object arg; | |
ccd0664b RS |
2797 | { |
2798 | register Lisp_Object window; | |
2f787aa3 | 2799 | register int defalt; |
ccd0664b RS |
2800 | register struct window *w; |
2801 | register int count = specpdl_ptr - specpdl; | |
2802 | ||
2803 | window = Fother_window_for_scrolling (); | |
2804 | ||
7ab12479 | 2805 | w = XWINDOW (window); |
2f787aa3 KH |
2806 | defalt = window_internal_height (w) - next_screen_context_lines; |
2807 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
2808 | |
2809 | /* Don't screw up if window_scroll gets an error. */ | |
2810 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2811 | ||
2812 | Fset_buffer (w->buffer); | |
2813 | SET_PT (marker_position (w->pointm)); | |
2814 | ||
413430c5 | 2815 | if (NILP (arg)) |
2f787aa3 | 2816 | window_scroll (window, defalt, 1); |
413430c5 | 2817 | else if (EQ (arg, Qminus)) |
2f787aa3 | 2818 | window_scroll (window, -defalt, 1); |
7ab12479 JB |
2819 | else |
2820 | { | |
413430c5 EN |
2821 | if (CONSP (arg)) |
2822 | arg = Fcar (arg); | |
2823 | CHECK_NUMBER (arg, 0); | |
2824 | window_scroll (window, XINT (arg), 1); | |
7ab12479 JB |
2825 | } |
2826 | ||
5ce7b543 | 2827 | Fset_marker (w->pointm, make_number (PT), Qnil); |
f4e7b2c2 | 2828 | unbind_to (count, Qnil); |
7ab12479 JB |
2829 | |
2830 | return Qnil; | |
2831 | } | |
2832 | \f | |
644b477c | 2833 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
2834 | "Scroll selected window display ARG columns left.\n\ |
2835 | Default for ARG is window width minus 2.") | |
2836 | (arg) | |
2837 | register Lisp_Object arg; | |
2838 | { | |
2839 | ||
265a9e55 | 2840 | if (NILP (arg)) |
d834a2e9 | 2841 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2842 | else |
2843 | arg = Fprefix_numeric_value (arg); | |
2844 | ||
2845 | return | |
2846 | Fset_window_hscroll (selected_window, | |
2847 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2848 | + XINT (arg))); | |
2849 | } | |
2850 | ||
644b477c | 2851 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
2852 | "Scroll selected window display ARG columns right.\n\ |
2853 | Default for ARG is window width minus 2.") | |
2854 | (arg) | |
2855 | register Lisp_Object arg; | |
2856 | { | |
265a9e55 | 2857 | if (NILP (arg)) |
d834a2e9 | 2858 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2859 | else |
2860 | arg = Fprefix_numeric_value (arg); | |
2861 | ||
2862 | return | |
2863 | Fset_window_hscroll (selected_window, | |
2864 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2865 | - XINT (arg))); | |
2866 | } | |
2867 | ||
2868 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2869 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2870 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 2871 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 2872 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 2873 | redraws with point in the center of the current window.") |
413430c5 EN |
2874 | (arg) |
2875 | register Lisp_Object arg; | |
7ab12479 JB |
2876 | { |
2877 | register struct window *w = XWINDOW (selected_window); | |
2878 | register int ht = window_internal_height (w); | |
113d9015 | 2879 | struct position pos; |
7ab12479 | 2880 | |
413430c5 | 2881 | if (NILP (arg)) |
7ab12479 | 2882 | { |
44fa5b1e | 2883 | extern int frame_garbaged; |
7ab12479 | 2884 | |
44fa5b1e | 2885 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 2886 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 2887 | } |
413430c5 | 2888 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 2889 | { |
413430c5 | 2890 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
2891 | } |
2892 | else | |
2893 | { | |
413430c5 EN |
2894 | arg = Fprefix_numeric_value (arg); |
2895 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
2896 | } |
2897 | ||
413430c5 EN |
2898 | if (XINT (arg) < 0) |
2899 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 2900 | |
6ec8bbd2 | 2901 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 2902 | |
113d9015 KH |
2903 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
2904 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
2905 | || FETCH_CHAR (pos.bufpos - 1) == '\n') | |
2906 | ? Qt : Qnil); | |
7ab12479 JB |
2907 | w->force_start = Qt; |
2908 | ||
2909 | return Qnil; | |
2910 | } | |
2911 | \f | |
2912 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2913 | 1, 1, "P", | |
2914 | "Position point relative to window.\n\ | |
19e3bf0a | 2915 | With no argument, position point at center of window.\n\ |
44fa5b1e | 2916 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2917 | negative means relative to bottom of window.") |
2918 | (arg) | |
2919 | register Lisp_Object arg; | |
2920 | { | |
2921 | register struct window *w = XWINDOW (selected_window); | |
2922 | register int height = window_internal_height (w); | |
2923 | register int start; | |
540b6aa0 | 2924 | Lisp_Object window; |
7ab12479 | 2925 | |
265a9e55 | 2926 | if (NILP (arg)) |
d834a2e9 | 2927 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
2928 | else |
2929 | { | |
2930 | arg = Fprefix_numeric_value (arg); | |
2931 | if (XINT (arg) < 0) | |
2932 | XSETINT (arg, XINT (arg) + height); | |
2933 | } | |
2934 | ||
2935 | start = marker_position (w->start); | |
74112613 | 2936 | XSETWINDOW (window, w); |
7ab12479 JB |
2937 | if (start < BEGV || start > ZV) |
2938 | { | |
cd2be1dd | 2939 | Fvertical_motion (make_number (- (height / 2)), window); |
5ce7b543 | 2940 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
2941 | w->start_at_line_beg = Fbolp (); |
2942 | w->force_start = Qt; | |
2943 | } | |
2944 | else | |
2945 | SET_PT (start); | |
2946 | ||
540b6aa0 | 2947 | return Fvertical_motion (arg, window); |
7ab12479 JB |
2948 | } |
2949 | \f | |
2950 | struct save_window_data | |
2951 | { | |
f5ccc0cc | 2952 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 2953 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 2954 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 2955 | Lisp_Object selected_frame; |
7ab12479 JB |
2956 | Lisp_Object current_window; |
2957 | Lisp_Object current_buffer; | |
2958 | Lisp_Object minibuf_scroll_window; | |
2959 | Lisp_Object root_window; | |
bdc727bf | 2960 | Lisp_Object focus_frame; |
756b6edc RS |
2961 | /* Record the values of window-min-width and window-min-height |
2962 | so that window sizes remain consistent with them. */ | |
2963 | Lisp_Object min_width, min_height; | |
7ab12479 JB |
2964 | /* A vector, interpreted as a struct saved_window */ |
2965 | Lisp_Object saved_windows; | |
2966 | }; | |
ff06df24 | 2967 | |
7ab12479 JB |
2968 | /* This is saved as a Lisp_Vector */ |
2969 | struct saved_window | |
2970 | { | |
2971 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 2972 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
2973 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
2974 | ||
2975 | Lisp_Object window; | |
2976 | Lisp_Object buffer, start, pointm, mark; | |
2977 | Lisp_Object left, top, width, height, hscroll; | |
2978 | Lisp_Object parent, prev; | |
2979 | Lisp_Object start_at_line_beg; | |
2980 | Lisp_Object display_table; | |
2981 | }; | |
2982 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2983 | ||
2984 | #define SAVED_WINDOW_N(swv,n) \ | |
2985 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2986 | ||
2987 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
5c4d25a6 | 2988 | "T if OBJECT is a window-configuration object.") |
413430c5 EN |
2989 | (object) |
2990 | Lisp_Object object; | |
7ab12479 | 2991 | { |
413430c5 | 2992 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
2993 | return Qt; |
2994 | return Qnil; | |
2995 | } | |
2996 | ||
2997 | ||
d5b2799e RS |
2998 | DEFUN ("set-window-configuration", Fset_window_configuration, |
2999 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
3000 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
3001 | CONFIGURATION must be a value previously returned\n\ | |
3002 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
3003 | (configuration) |
3004 | Lisp_Object configuration; | |
7ab12479 | 3005 | { |
7ab12479 JB |
3006 | register struct save_window_data *data; |
3007 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 3008 | Lisp_Object new_current_buffer; |
fd482be5 | 3009 | Lisp_Object frame; |
44fa5b1e | 3010 | FRAME_PTR f; |
7ab12479 | 3011 | |
017b2bad | 3012 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 3013 | { |
2f83aebe JB |
3014 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
3015 | configuration); | |
7ab12479 JB |
3016 | } |
3017 | ||
2f83aebe | 3018 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
3019 | saved_windows = XVECTOR (data->saved_windows); |
3020 | ||
7ab12479 | 3021 | new_current_buffer = data->current_buffer; |
265a9e55 | 3022 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
3023 | new_current_buffer = Qnil; |
3024 | ||
fd482be5 JB |
3025 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3026 | f = XFRAME (frame); | |
9ace597f | 3027 | |
fd482be5 JB |
3028 | /* If f is a dead frame, don't bother rebuilding its window tree. |
3029 | However, there is other stuff we should still try to do below. */ | |
3030 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 3031 | { |
fd482be5 JB |
3032 | register struct window *w; |
3033 | register struct saved_window *p; | |
3034 | int k; | |
3035 | ||
3036 | /* If the frame has been resized since this window configuration was | |
3037 | made, we change the frame to the size specified in the | |
3038 | configuration, restore the configuration, and then resize it | |
3039 | back. We keep track of the prevailing height in these variables. */ | |
3040 | int previous_frame_height = FRAME_HEIGHT (f); | |
3041 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 3042 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
3043 | |
3044 | if (XFASTINT (data->frame_height) != previous_frame_height | |
3045 | || XFASTINT (data->frame_width) != previous_frame_width) | |
3046 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
e3678b64 | 3047 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3048 | if (XFASTINT (data->frame_menu_bar_lines) |
3049 | != previous_frame_menu_bar_lines) | |
3050 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
217f2871 | 3051 | #endif |
fd482be5 JB |
3052 | |
3053 | windows_or_buffers_changed++; | |
29aeee73 | 3054 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 3055 | |
756b6edc RS |
3056 | /* Temporarily avoid any problems with windows that are smaller |
3057 | than they are supposed to be. */ | |
3058 | window_min_height = 1; | |
3059 | window_min_width = 1; | |
3060 | ||
fd482be5 JB |
3061 | /* Kludge Alert! |
3062 | Mark all windows now on frame as "deleted". | |
3063 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 3064 | |
fd482be5 JB |
3065 | Save their current buffers in their height fields, since we may |
3066 | need it later, if a buffer saved in the configuration is now | |
3067 | dead. */ | |
3068 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
3069 | ||
3070 | for (k = 0; k < saved_windows->size; k++) | |
3071 | { | |
3072 | p = SAVED_WINDOW_N (saved_windows, k); | |
3073 | w = XWINDOW (p->window); | |
3074 | w->next = Qnil; | |
7ab12479 | 3075 | |
fd482be5 JB |
3076 | if (!NILP (p->parent)) |
3077 | w->parent = SAVED_WINDOW_N (saved_windows, | |
3078 | XFASTINT (p->parent))->window; | |
3079 | else | |
3080 | w->parent = Qnil; | |
7ab12479 | 3081 | |
fd482be5 | 3082 | if (!NILP (p->prev)) |
7ab12479 | 3083 | { |
fd482be5 JB |
3084 | w->prev = SAVED_WINDOW_N (saved_windows, |
3085 | XFASTINT (p->prev))->window; | |
3086 | XWINDOW (w->prev)->next = p->window; | |
3087 | } | |
3088 | else | |
3089 | { | |
3090 | w->prev = Qnil; | |
3091 | if (!NILP (w->parent)) | |
3092 | { | |
3093 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
3094 | { | |
3095 | XWINDOW (w->parent)->vchild = p->window; | |
3096 | XWINDOW (w->parent)->hchild = Qnil; | |
3097 | } | |
3098 | else | |
3099 | { | |
3100 | XWINDOW (w->parent)->hchild = p->window; | |
3101 | XWINDOW (w->parent)->vchild = Qnil; | |
3102 | } | |
3103 | } | |
3104 | } | |
3105 | ||
3106 | /* If we squirreled away the buffer in the window's height, | |
3107 | restore it now. */ | |
017b2bad | 3108 | if (BUFFERP (w->height)) |
fd482be5 JB |
3109 | w->buffer = w->height; |
3110 | w->left = p->left; | |
3111 | w->top = p->top; | |
3112 | w->width = p->width; | |
3113 | w->height = p->height; | |
3114 | w->hscroll = p->hscroll; | |
3115 | w->display_table = p->display_table; | |
d834a2e9 | 3116 | XSETFASTINT (w->last_modified, 0); |
fd482be5 JB |
3117 | |
3118 | /* Reinstall the saved buffer and pointers into it. */ | |
3119 | if (NILP (p->buffer)) | |
3120 | w->buffer = p->buffer; | |
3121 | else | |
3122 | { | |
3123 | if (!NILP (XBUFFER (p->buffer)->name)) | |
3124 | /* If saved buffer is alive, install it. */ | |
3125 | { | |
3126 | w->buffer = p->buffer; | |
3127 | w->start_at_line_beg = p->start_at_line_beg; | |
3128 | set_marker_restricted (w->start, | |
3129 | Fmarker_position (p->start), | |
3130 | w->buffer); | |
3131 | set_marker_restricted (w->pointm, | |
3132 | Fmarker_position (p->pointm), | |
3133 | w->buffer); | |
3134 | Fset_marker (XBUFFER (w->buffer)->mark, | |
3135 | Fmarker_position (p->mark), w->buffer); | |
3136 | ||
3137 | /* As documented in Fcurrent_window_configuration, don't | |
3138 | save the location of point in the buffer which was current | |
3139 | when the window configuration was recorded. */ | |
6b54027b RS |
3140 | if (!EQ (p->buffer, new_current_buffer) |
3141 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
3142 | Fgoto_char (w->pointm); |
3143 | } | |
52a68e98 RS |
3144 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
3145 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 3146 | { |
fd482be5 JB |
3147 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
3148 | /* This will set the markers to beginning of visible | |
3149 | range. */ | |
3150 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
3151 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
3152 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3153 | } |
3154 | else | |
fd482be5 | 3155 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 3156 | are real. */ |
7ab12479 | 3157 | { |
fd482be5 JB |
3158 | /* Set window markers at start of visible range. */ |
3159 | if (XMARKER (w->start)->buffer == 0) | |
3160 | set_marker_restricted (w->start, make_number (0), | |
3161 | w->buffer); | |
3162 | if (XMARKER (w->pointm)->buffer == 0) | |
3163 | set_marker_restricted (w->pointm, | |
3164 | (make_number | |
3165 | (BUF_PT (XBUFFER (w->buffer)))), | |
3166 | w->buffer); | |
3167 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3168 | } |
3169 | } | |
3170 | } | |
9ace597f | 3171 | |
fd482be5 JB |
3172 | FRAME_ROOT_WINDOW (f) = data->root_window; |
3173 | Fselect_window (data->current_window); | |
7ab12479 | 3174 | |
db269683 | 3175 | if (NILP (data->focus_frame) |
017b2bad | 3176 | || (FRAMEP (data->focus_frame) |
db269683 JB |
3177 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
3178 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 3179 | |
fd482be5 JB |
3180 | #if 0 /* I don't understand why this is needed, and it causes problems |
3181 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 3182 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
3183 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
3184 | Qnil, 0); | |
fd482be5 JB |
3185 | #endif |
3186 | ||
3187 | /* Set the screen height to the value it had before this function. */ | |
3188 | if (previous_frame_height != FRAME_HEIGHT (f) | |
3189 | || previous_frame_width != FRAME_WIDTH (f)) | |
3190 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
3191 | 0, 0); | |
e3678b64 | 3192 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3193 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
3194 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
217f2871 | 3195 | #endif |
fd482be5 | 3196 | } |
bdc727bf | 3197 | |
756b6edc RS |
3198 | /* Restore the minimum heights recorded in the configuration. */ |
3199 | window_min_height = XINT (data->min_height); | |
3200 | window_min_width = XINT (data->min_width); | |
3201 | ||
bdc727bf | 3202 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 3203 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
3204 | selected window too, but that doesn't make the call to |
3205 | Fselect_window above totally superfluous; it still sets f's | |
3206 | selected window. */ | |
fd482be5 | 3207 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
9a7c6fc3 | 3208 | do_switch_frame (data->selected_frame, Qnil, 0); |
bdc727bf JB |
3209 | |
3210 | if (!NILP (new_current_buffer)) | |
3211 | Fset_buffer (new_current_buffer); | |
3212 | ||
7ab12479 JB |
3213 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3214 | return (Qnil); | |
3215 | } | |
3216 | ||
44fa5b1e | 3217 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3218 | by setting their buffers to nil. */ |
3219 | ||
fd482be5 | 3220 | void |
7ab12479 JB |
3221 | delete_all_subwindows (w) |
3222 | register struct window *w; | |
3223 | { | |
265a9e55 | 3224 | if (!NILP (w->next)) |
7ab12479 | 3225 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3226 | if (!NILP (w->vchild)) |
7ab12479 | 3227 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3228 | if (!NILP (w->hchild)) |
7ab12479 | 3229 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3230 | |
3231 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3232 | ||
86e48436 RS |
3233 | if (!NILP (w->buffer)) |
3234 | unshow_buffer (w); | |
3235 | ||
605be8af JB |
3236 | /* We set all three of these fields to nil, to make sure that we can |
3237 | distinguish this dead window from any live window. Live leaf | |
3238 | windows will have buffer set, and combination windows will have | |
3239 | vchild or hchild set. */ | |
3240 | w->buffer = Qnil; | |
3241 | w->vchild = Qnil; | |
3242 | w->hchild = Qnil; | |
7ab12479 JB |
3243 | } |
3244 | \f | |
3245 | static int | |
3246 | count_windows (window) | |
3247 | register struct window *window; | |
3248 | { | |
3249 | register int count = 1; | |
265a9e55 | 3250 | if (!NILP (window->next)) |
7ab12479 | 3251 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3252 | if (!NILP (window->vchild)) |
7ab12479 | 3253 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3254 | if (!NILP (window->hchild)) |
7ab12479 JB |
3255 | count += count_windows (XWINDOW (window->hchild)); |
3256 | return count; | |
3257 | } | |
3258 | ||
3259 | static int | |
3260 | save_window_save (window, vector, i) | |
3261 | Lisp_Object window; | |
3262 | struct Lisp_Vector *vector; | |
3263 | int i; | |
3264 | { | |
3265 | register struct saved_window *p; | |
3266 | register struct window *w; | |
3267 | register Lisp_Object tem; | |
3268 | ||
265a9e55 | 3269 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3270 | { |
3271 | p = SAVED_WINDOW_N (vector, i); | |
3272 | w = XWINDOW (window); | |
3273 | ||
d834a2e9 | 3274 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3275 | p->window = window; |
3276 | p->buffer = w->buffer; | |
3277 | p->left = w->left; | |
3278 | p->top = w->top; | |
3279 | p->width = w->width; | |
3280 | p->height = w->height; | |
3281 | p->hscroll = w->hscroll; | |
3282 | p->display_table = w->display_table; | |
265a9e55 | 3283 | if (!NILP (w->buffer)) |
7ab12479 JB |
3284 | { |
3285 | /* Save w's value of point in the window configuration. | |
3286 | If w is the selected window, then get the value of point | |
3287 | from the buffer; pointm is garbage in the selected window. */ | |
3288 | if (EQ (window, selected_window)) | |
3289 | { | |
3290 | p->pointm = Fmake_marker (); | |
3291 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
3292 | w->buffer); | |
3293 | } | |
3294 | else | |
eeb82665 | 3295 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 3296 | |
eeb82665 | 3297 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
3298 | p->start_at_line_beg = w->start_at_line_beg; |
3299 | ||
3300 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 3301 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
3302 | } |
3303 | else | |
3304 | { | |
3305 | p->pointm = Qnil; | |
3306 | p->start = Qnil; | |
3307 | p->mark = Qnil; | |
3308 | p->start_at_line_beg = Qnil; | |
3309 | } | |
3310 | ||
265a9e55 | 3311 | if (NILP (w->parent)) |
7ab12479 JB |
3312 | p->parent = Qnil; |
3313 | else | |
3314 | p->parent = XWINDOW (w->parent)->temslot; | |
3315 | ||
265a9e55 | 3316 | if (NILP (w->prev)) |
7ab12479 JB |
3317 | p->prev = Qnil; |
3318 | else | |
3319 | p->prev = XWINDOW (w->prev)->temslot; | |
3320 | ||
265a9e55 | 3321 | if (!NILP (w->vchild)) |
7ab12479 | 3322 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3323 | if (!NILP (w->hchild)) |
7ab12479 JB |
3324 | i = save_window_save (w->hchild, vector, i); |
3325 | } | |
3326 | ||
3327 | return i; | |
3328 | } | |
3329 | ||
3330 | DEFUN ("current-window-configuration", | |
43bad991 | 3331 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
3332 | "Return an object representing the current window configuration of FRAME.\n\ |
3333 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3334 | This describes the number of windows, their sizes and current buffers,\n\ |
3335 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3336 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3337 | its value is -not- saved.\n\ |
3338 | This also records the currently selected frame, and FRAME's focus\n\ | |
3339 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3340 | (frame) |
3341 | Lisp_Object frame; | |
7ab12479 JB |
3342 | { |
3343 | register Lisp_Object tem; | |
3344 | register int n_windows; | |
3345 | register struct save_window_data *data; | |
da2792e0 | 3346 | register struct Lisp_Vector *vec; |
7ab12479 | 3347 | register int i; |
44fa5b1e | 3348 | FRAME_PTR f; |
43bad991 | 3349 | |
44fa5b1e JB |
3350 | if (NILP (frame)) |
3351 | f = selected_frame; | |
43bad991 JB |
3352 | else |
3353 | { | |
44fa5b1e JB |
3354 | CHECK_LIVE_FRAME (frame, 0); |
3355 | f = XFRAME (frame); | |
43bad991 | 3356 | } |
7ab12479 | 3357 | |
44fa5b1e | 3358 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3359 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3360 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3361 | vec->contents[i] = Qnil; | |
3362 | vec->size = VECSIZE (struct save_window_data); | |
3363 | data = (struct save_window_data *)vec; | |
3364 | ||
d834a2e9 KH |
3365 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3366 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3367 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
74112613 | 3368 | XSETFRAME (data->selected_frame, selected_frame); |
44fa5b1e | 3369 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3370 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3371 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3372 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3373 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3374 | XSETINT (data->min_height, window_min_height); |
3375 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3376 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3377 | data->saved_windows = tem; | |
3378 | for (i = 0; i < n_windows; i++) | |
3379 | XVECTOR (tem)->contents[i] | |
3380 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3381 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3382 | XVECTOR (tem), 0); |
74112613 | 3383 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3384 | return (tem); |
3385 | } | |
3386 | ||
3387 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3388 | 0, UNEVALLED, 0, | |
3389 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3390 | Restore which buffer appears in which window, where display starts,\n\ |
3391 | and the value of point and mark for each window.\n\ | |
3392 | Also restore which buffer is current.\n\ | |
3393 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3394 | Does not restore the value of point in current buffer.") |
3395 | (args) | |
3396 | Lisp_Object args; | |
3397 | { | |
3398 | register Lisp_Object val; | |
3399 | register int count = specpdl_ptr - specpdl; | |
3400 | ||
3401 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3402 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3403 | val = Fprogn (args); |
3404 | return unbind_to (count, val); | |
3405 | } | |
3406 | \f | |
3407 | init_window_once () | |
3408 | { | |
44fa5b1e | 3409 | selected_frame = make_terminal_frame (); |
bc6c324f | 3410 | XSETFRAME (Vterminal_frame, selected_frame); |
44fa5b1e JB |
3411 | minibuf_window = selected_frame->minibuffer_window; |
3412 | selected_window = selected_frame->selected_window; | |
3413 | last_nonminibuf_frame = selected_frame; | |
5b03d3c0 RS |
3414 | |
3415 | window_initialized = 1; | |
7ab12479 JB |
3416 | } |
3417 | ||
3418 | syms_of_window () | |
3419 | { | |
3420 | Qwindowp = intern ("windowp"); | |
3421 | staticpro (&Qwindowp); | |
3422 | ||
806b4d9b JB |
3423 | Qwindow_live_p = intern ("window-live-p"); |
3424 | staticpro (&Qwindow_live_p); | |
605be8af | 3425 | |
2cccc823 | 3426 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
3427 | staticpro (&Qtemp_buffer_show_hook); |
3428 | ||
7ab12479 JB |
3429 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
3430 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3431 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
3432 | Used by `with-output-to-temp-buffer'.\n\ |
3433 | If this function is used, then it must do the entire job of showing\n\ | |
3434 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
3435 | Vtemp_buffer_show_function = Qnil; |
3436 | ||
3437 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3438 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3439 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3440 | that the currently selected window is not acceptable.\n\ | |
3441 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3442 | work using this function."); | |
3443 | Vdisplay_buffer_function = Qnil; | |
3444 | ||
7ab12479 JB |
3445 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3446 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3447 | Vminibuf_scroll_window = Qnil; | |
3448 | ||
3449 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3450 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3451 | Vother_window_scroll_buffer = Qnil; | |
3452 | ||
44fa5b1e | 3453 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3454 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3455 | pop_up_frames = 0; |
7ab12479 | 3456 | |
44fa5b1e | 3457 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3458 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3459 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3460 | \n\ |
44fa5b1e JB |
3461 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3462 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3463 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3464 | |
a90712c2 RS |
3465 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3466 | "*List of buffer names that should have their own special frames.\n\ | |
3467 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3468 | using `special-display-function'.\n\ |
3548e138 RS |
3469 | \n\ |
3470 | An element of the list can be a cons cell instead of just a string.\n\ | |
3471 | Then the car should be a buffer name, and the cdr specifies frame\n\ | |
3472 | parameters for creating the frame for that buffer.\n\ | |
3473 | More precisely, the cdr is passed as the second argument to\n\ | |
3474 | the function found in `special-display-function', when making that frame.\n\ | |
0a952b57 | 3475 | See also `special-display-regexps'."); |
a90712c2 RS |
3476 | Vspecial_display_buffer_names = Qnil; |
3477 | ||
3478 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3479 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3480 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3481 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3482 | using `special-display-function'.\n\ |
3548e138 RS |
3483 | \n\ |
3484 | An element of the list can be a cons cell instead of just a string.\n\ | |
3485 | Then the car should be the regexp, and the cdr specifies frame\n\ | |
3486 | parameters for creating the frame for buffers that match.\n\ | |
3487 | More precisely, the cdr is passed as the second argument to\n\ | |
3488 | the function found in `special-display-function', when making that frame.\n\ | |
0a952b57 | 3489 | See also `special-display-buffer-names'."); |
a90712c2 RS |
3490 | Vspecial_display_regexps = Qnil; |
3491 | ||
3492 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3493 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3494 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3495 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3496 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3497 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3498 | \n\ |
3499 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3500 | or matches a regexp in `special-display-regexps'."); | |
3501 | Vspecial_display_function = Qnil; | |
3502 | ||
855d8627 RS |
3503 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
3504 | "*List of buffer names that should appear in the selected window.\n\ | |
3505 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
3506 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 3507 | in some other window.\n\ |
855d8627 RS |
3508 | \n\ |
3509 | An element of the list can be a cons cell instead of just a string.\n\ | |
3510 | Then the car must be a string, which specifies the buffer name.\n\ | |
3511 | This is for compatibility with `special-display-buffer-names';\n\ | |
3512 | the cdr of the cons cell is ignored.\n\ | |
3513 | \n\ | |
3514 | See also `same-window-regexps'."); | |
3515 | Vsame_window_buffer_names = Qnil; | |
3516 | ||
3517 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
3518 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
3519 | If a buffer name matches one of these regexps, then displaying it\n\ | |
3520 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
3521 | in the selected window, rather than making it appear in some other window.\n\ | |
3522 | \n\ | |
3523 | An element of the list can be a cons cell instead of just a string.\n\ | |
3524 | Then the car must be a string, which specifies the buffer name.\n\ | |
3525 | This is for compatibility with `special-display-buffer-names';\n\ | |
3526 | the cdr of the cons cell is ignored.\n\ | |
3527 | \n\ | |
3528 | See also `same-window-buffer-names'."); | |
3529 | Vsame_window_regexps = Qnil; | |
3530 | ||
7ab12479 JB |
3531 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3532 | "*Non-nil means display-buffer should make new windows."); | |
3533 | pop_up_windows = 1; | |
3534 | ||
3535 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3536 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3537 | next_screen_context_lines = 2; | |
3538 | ||
3539 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3540 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3541 | If there is only one window, it is split regardless of this value."); | |
3542 | split_height_threshold = 500; | |
3543 | ||
3544 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3545 | "*Delete any window less than this tall (including its mode line)."); | |
3546 | window_min_height = 4; | |
3547 | ||
3548 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3549 | "*Delete any window less than this wide."); | |
3550 | window_min_width = 10; | |
3551 | ||
3552 | defsubr (&Sselected_window); | |
3553 | defsubr (&Sminibuffer_window); | |
3554 | defsubr (&Swindow_minibuffer_p); | |
3555 | defsubr (&Swindowp); | |
806b4d9b | 3556 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3557 | defsubr (&Spos_visible_in_window_p); |
3558 | defsubr (&Swindow_buffer); | |
3559 | defsubr (&Swindow_height); | |
3560 | defsubr (&Swindow_width); | |
3561 | defsubr (&Swindow_hscroll); | |
3562 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
3563 | defsubr (&Swindow_redisplay_end_trigger); |
3564 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 3565 | defsubr (&Swindow_edges); |
d5783c40 JB |
3566 | defsubr (&Scoordinates_in_window_p); |
3567 | defsubr (&Swindow_at); | |
7ab12479 JB |
3568 | defsubr (&Swindow_point); |
3569 | defsubr (&Swindow_start); | |
3570 | defsubr (&Swindow_end); | |
3571 | defsubr (&Sset_window_point); | |
3572 | defsubr (&Sset_window_start); | |
3573 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3574 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3575 | defsubr (&Swindow_display_table); |
3576 | defsubr (&Sset_window_display_table); | |
3577 | defsubr (&Snext_window); | |
3578 | defsubr (&Sprevious_window); | |
3579 | defsubr (&Sother_window); | |
3580 | defsubr (&Sget_lru_window); | |
3581 | defsubr (&Sget_largest_window); | |
3582 | defsubr (&Sget_buffer_window); | |
3583 | defsubr (&Sdelete_other_windows); | |
3584 | defsubr (&Sdelete_windows_on); | |
3585 | defsubr (&Sreplace_buffer_in_windows); | |
3586 | defsubr (&Sdelete_window); | |
3587 | defsubr (&Sset_window_buffer); | |
3588 | defsubr (&Sselect_window); | |
3589 | defsubr (&Sdisplay_buffer); | |
3590 | defsubr (&Ssplit_window); | |
3591 | defsubr (&Senlarge_window); | |
3592 | defsubr (&Sshrink_window); | |
3593 | defsubr (&Sscroll_up); | |
3594 | defsubr (&Sscroll_down); | |
3595 | defsubr (&Sscroll_left); | |
3596 | defsubr (&Sscroll_right); | |
ccd0664b | 3597 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
3598 | defsubr (&Sscroll_other_window); |
3599 | defsubr (&Srecenter); | |
3600 | defsubr (&Smove_to_window_line); | |
3601 | defsubr (&Swindow_configuration_p); | |
3602 | defsubr (&Sset_window_configuration); | |
3603 | defsubr (&Scurrent_window_configuration); | |
3604 | defsubr (&Ssave_window_excursion); | |
3605 | } | |
3606 | ||
3607 | keys_of_window () | |
3608 | { | |
3609 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3610 | initial_define_key (control_x_map, '2', "split-window"); | |
3611 | initial_define_key (control_x_map, '0', "delete-window"); | |
3612 | initial_define_key (control_x_map, 'o', "other-window"); | |
3613 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3614 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3615 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3616 | ||
3617 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3618 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3619 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3620 | ||
3621 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3622 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3623 | } |