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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
1113d9db | 3 | Copyright (C) 1985, 1986, 1987, 1992 Free Software Foundation, Inc. |
7ab12479 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1113d9db | 9 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
7ab12479 JB |
21 | #include "config.h" |
22 | #include "lisp.h" | |
23 | #include "buffer.h" | |
44fa5b1e | 24 | #include "frame.h" |
7ab12479 JB |
25 | #include "window.h" |
26 | #include "commands.h" | |
27 | #include "indent.h" | |
28 | #include "termchar.h" | |
29 | #include "disptab.h" | |
f8026fd8 | 30 | #include "keyboard.h" |
7ab12479 JB |
31 | |
32 | Lisp_Object Qwindowp; | |
33 | ||
34 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
35 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
36 | ||
37 | static void delete_all_subwindows (); | |
38 | static struct window *decode_window(); | |
39 | ||
40 | /* This is the window in which the terminal's cursor should | |
41 | be left when nothing is being done with it. This must | |
42 | always be a leaf window, and its buffer is selected by | |
43 | the top level editing loop at the end of each command. | |
44 | ||
45 | This value is always the same as | |
44fa5b1e | 46 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
47 | |
48 | Lisp_Object selected_window; | |
49 | ||
44fa5b1e | 50 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
51 | Note that you cannot test for minibufferness of an arbitrary window |
52 | by comparing against this; but you can test for minibufferness of | |
53 | the selected window. */ | |
54 | Lisp_Object minibuf_window; | |
55 | ||
56 | /* Non-nil means it is the window for C-M-v to scroll | |
57 | when the minibuffer is selected. */ | |
58 | Lisp_Object Vminibuf_scroll_window; | |
59 | ||
60 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
61 | Lisp_Object Vother_window_scroll_buffer; | |
62 | ||
63 | /* Window that the mouse is over (nil if no mouse support). */ | |
64 | Lisp_Object Vmouse_window; | |
65 | ||
66 | /* Last mouse click data structure (nil if no mouse support). */ | |
67 | Lisp_Object Vmouse_event; | |
68 | ||
69 | /* Non-nil means it's function to call to display temp buffers. */ | |
70 | Lisp_Object Vtemp_buffer_show_function; | |
71 | ||
72 | /* If a window gets smaller than either of these, it is removed. */ | |
73 | int window_min_height; | |
74 | int window_min_width; | |
75 | ||
76 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
77 | int pop_up_windows; | |
78 | ||
44fa5b1e JB |
79 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
80 | int pop_up_frames; | |
7ab12479 JB |
81 | |
82 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 83 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
84 | |
85 | /* Function to call to handle Fdisplay_buffer. */ | |
86 | Lisp_Object Vdisplay_buffer_function; | |
87 | ||
88 | /* Fdisplay_buffer always splits the largest window | |
89 | if that window is more than this high. */ | |
90 | int split_height_threshold; | |
91 | ||
92 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
93 | int next_screen_context_lines; | |
94 | ||
95 | /* Incremented for each window created. */ | |
96 | static int sequence_number; | |
97 | ||
98 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
99 | \f | |
100 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
101 | "Returns t if OBJ is a window.") | |
102 | (obj) | |
103 | Lisp_Object obj; | |
104 | { | |
105 | return XTYPE (obj) == Lisp_Window ? Qt : Qnil; | |
106 | } | |
107 | ||
108 | Lisp_Object | |
109 | make_window () | |
110 | { | |
111 | register Lisp_Object val; | |
112 | register struct window *p; | |
113 | ||
114 | /* Add sizeof (Lisp_Object) here because sizeof (struct Lisp_Vector) | |
115 | includes the first element. */ | |
116 | val = Fmake_vector ( | |
117 | make_number ((sizeof (struct window) - sizeof (struct Lisp_Vector) | |
118 | + sizeof (Lisp_Object)) | |
119 | / sizeof (Lisp_Object)), | |
120 | Qnil); | |
121 | XSETTYPE (val, Lisp_Window); | |
122 | p = XWINDOW (val); | |
123 | XFASTINT (p->sequence_number) = ++sequence_number; | |
124 | XFASTINT (p->left) = XFASTINT (p->top) | |
125 | = XFASTINT (p->height) = XFASTINT (p->width) | |
126 | = XFASTINT (p->hscroll) = 0; | |
127 | XFASTINT (p->last_point_x) = XFASTINT (p->last_point_y) = 0; | |
128 | p->start = Fmake_marker (); | |
129 | p->pointm = Fmake_marker (); | |
130 | XFASTINT (p->use_time) = 0; | |
44fa5b1e | 131 | p->frame = Qnil; |
7ab12479 JB |
132 | p->display_table = Qnil; |
133 | p->dedicated = Qnil; | |
134 | return val; | |
135 | } | |
136 | ||
137 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
138 | "Return the window that the cursor now appears in and commands apply to.") | |
139 | () | |
140 | { | |
141 | return selected_window; | |
142 | } | |
143 | ||
144 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 0, 0, | |
145 | "Return the window used now for minibuffers.") | |
146 | () | |
147 | { | |
44fa5b1e JB |
148 | #ifdef MULTI_FRAME |
149 | choose_minibuf_frame (); | |
150 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
151 | return minibuf_window; |
152 | } | |
153 | ||
154 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 1, 1, 0, | |
155 | "Returns non-nil if WINDOW is a minibuffer window.") | |
156 | (window) | |
157 | Lisp_Object window; | |
158 | { | |
159 | struct window *w = decode_window (window); | |
160 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
161 | } | |
162 | ||
163 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
164 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 165 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
166 | Returns nil if that position is scrolled vertically out of view.\n\ |
167 | POS defaults to point; WINDOW, to the selected window.") | |
168 | (pos, window) | |
169 | Lisp_Object pos, window; | |
170 | { | |
171 | register struct window *w; | |
172 | register int top; | |
173 | register int height; | |
174 | register int posint; | |
175 | register struct buffer *buf; | |
176 | struct position posval; | |
177 | ||
265a9e55 | 178 | if (NILP (pos)) |
7ab12479 JB |
179 | posint = point; |
180 | else | |
181 | { | |
182 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
183 | posint = XINT (pos); | |
184 | } | |
185 | ||
265a9e55 | 186 | if (NILP (window)) |
7ab12479 JB |
187 | window = selected_window; |
188 | else | |
189 | CHECK_WINDOW (window, 1); | |
190 | w = XWINDOW (window); | |
191 | top = marker_position (w->start); | |
192 | ||
193 | if (posint < top) | |
194 | return Qnil; | |
195 | ||
196 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
197 | ||
198 | buf = XBUFFER (w->buffer); | |
199 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
200 | { | |
44fa5b1e | 201 | /* If frame is up to date, |
7ab12479 JB |
202 | use the info recorded about how much text fit on it. */ |
203 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
204 | || (XFASTINT (w->window_end_vpos) < height)) | |
205 | return Qt; | |
206 | return Qnil; | |
207 | } | |
208 | else | |
209 | { | |
210 | if (posint > BUF_Z (buf)) | |
211 | return Qnil; | |
212 | ||
213 | /* If that info is not correct, calculate afresh */ | |
214 | posval = *compute_motion (top, 0, 0, posint, height, 0, | |
215 | XFASTINT (w->width) - 1 | |
216 | - (XFASTINT (w->width) + XFASTINT (w->left) | |
44fa5b1e | 217 | != FRAME_WIDTH (XFRAME (w->frame))), |
7ab12479 JB |
218 | XINT (w->hscroll), 0); |
219 | ||
220 | return posval.vpos < height ? Qt : Qnil; | |
221 | } | |
222 | } | |
223 | \f | |
224 | static struct window * | |
225 | decode_window (window) | |
226 | register Lisp_Object window; | |
227 | { | |
265a9e55 | 228 | if (NILP (window)) |
7ab12479 JB |
229 | return XWINDOW (selected_window); |
230 | ||
231 | CHECK_WINDOW (window, 0); | |
232 | return XWINDOW (window); | |
233 | } | |
234 | ||
235 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
236 | "Return the buffer that WINDOW is displaying.") | |
237 | (window) | |
238 | Lisp_Object window; | |
239 | { | |
240 | return decode_window (window)->buffer; | |
241 | } | |
242 | ||
243 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
244 | "Return the number of lines in WINDOW (including its mode line).") | |
245 | (window) | |
246 | Lisp_Object window; | |
247 | { | |
248 | return decode_window (window)->height; | |
249 | } | |
250 | ||
251 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
252 | "Return the number of columns in WINDOW.") | |
253 | (window) | |
254 | Lisp_Object window; | |
255 | { | |
256 | register struct window *w = decode_window (window); | |
257 | register int width = w->width; | |
258 | ||
259 | /* If this window does not end at the right margin, | |
260 | must deduct one column for the border */ | |
44fa5b1e | 261 | if ((width + w->left) == FRAME_WIDTH (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
262 | return width; |
263 | return width - 1; | |
264 | } | |
265 | ||
266 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
267 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
268 | (window) | |
269 | Lisp_Object window; | |
270 | { | |
271 | return decode_window (window)->hscroll; | |
272 | } | |
273 | ||
274 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
275 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
276 | NCOL should be zero or positive.") | |
277 | (window, ncol) | |
278 | register Lisp_Object window, ncol; | |
279 | { | |
280 | register struct window *w; | |
281 | ||
282 | CHECK_NUMBER (ncol, 1); | |
283 | if (XINT (ncol) < 0) XFASTINT (ncol) = 0; | |
284 | if (XFASTINT (ncol) >= (1 << (SHORTBITS - 1))) | |
285 | args_out_of_range (ncol, Qnil); | |
286 | w = decode_window (window); | |
287 | if (w->hscroll != ncol) | |
288 | clip_changed = 1; /* Prevent redisplay shortcuts */ | |
289 | w->hscroll = ncol; | |
290 | return ncol; | |
291 | } | |
292 | ||
293 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, | |
294 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 295 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
296 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
297 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
298 | and its mode-line.") | |
299 | (window) | |
300 | Lisp_Object window; | |
301 | { | |
302 | register struct window *w = decode_window (window); | |
303 | ||
304 | return Fcons (w->left, Fcons (w->top, | |
305 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
306 | Fcons (make_number (XFASTINT (w->top) | |
307 | + XFASTINT (w->height)), | |
308 | Qnil)))); | |
309 | } | |
310 | ||
d5783c40 JB |
311 | /* Test if the character at column *x, row *y is within window *w. |
312 | If it is not, return 0; | |
313 | if it is in the window's text area, | |
314 | set *x and *y to its location relative to the upper left corner | |
315 | of the window, and | |
316 | return 1; | |
317 | if it is on the window's modeline, return 2; | |
318 | if it is on the border between the window and its right sibling, | |
319 | return 3. */ | |
320 | static int | |
321 | coordinates_in_window (w, x, y) | |
322 | register struct window *w; | |
323 | register int *x, *y; | |
324 | { | |
325 | register int left = XINT (w->left); | |
326 | register int width = XINT (w->width); | |
327 | register int window_height = XINT (w->height); | |
328 | register int top = XFASTINT (w->top); | |
329 | ||
330 | if ( *x < left || *x >= left + width | |
331 | || *y < top || *y >= top + window_height) | |
332 | return 0; | |
333 | ||
334 | /* Is the character is the mode line? */ | |
335 | if (*y == top + window_height - 1 | |
336 | && window_height > 1) /* 1 line => minibuffer */ | |
337 | return 2; | |
338 | ||
339 | /* Is the character in the right border? */ | |
340 | if (*x == left + width - 1 | |
44fa5b1e | 341 | && left + width != FRAME_WIDTH (XFRAME (w->frame))) |
d5783c40 JB |
342 | return 3; |
343 | ||
344 | *x -= left; | |
345 | *y -= top; | |
346 | return 1; | |
347 | } | |
348 | ||
349 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
350 | Scoordinates_in_window_p, 2, 2, 0, | |
351 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 352 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 353 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 354 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 355 | frame.\n\ |
d5783c40 JB |
356 | If COORDINATES are in the text portion of WINDOW,\n\ |
357 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 358 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 359 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 360 | `vertical-line' is returned.") |
d5783c40 JB |
361 | (coordinates, window) |
362 | register Lisp_Object coordinates, window; | |
363 | { | |
364 | int x, y; | |
365 | ||
366 | CHECK_WINDOW (window, 0); | |
367 | CHECK_CONS (coordinates, 1); | |
368 | x = XINT (Fcar (coordinates)); | |
369 | y = XINT (Fcdr (coordinates)); | |
370 | ||
371 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
372 | { | |
373 | case 0: /* NOT in window at all. */ | |
374 | return Qnil; | |
375 | ||
376 | case 1: /* In text part of window. */ | |
377 | return Fcons (x, y); | |
378 | ||
379 | case 2: /* In mode line of window. */ | |
380 | return Qmode_line; | |
381 | ||
382 | case 3: /* On right border of window. */ | |
e5d77022 | 383 | return Qvertical_line; |
d5783c40 JB |
384 | |
385 | default: | |
386 | abort (); | |
387 | } | |
388 | } | |
389 | ||
7ab12479 | 390 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
391 | Lisp_Object. If x, y is on the window's modeline, set *part |
392 | to 1; if it is on the separating line between the window and its | |
393 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
394 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 395 | Lisp_Object |
44fa5b1e JB |
396 | window_from_coordinates (frame, x, y, part) |
397 | FRAME_PTR frame; | |
7ab12479 | 398 | int x, y; |
d5783c40 | 399 | int *part; |
7ab12479 JB |
400 | { |
401 | register Lisp_Object tem, first; | |
402 | ||
44fa5b1e | 403 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 404 | |
d5783c40 | 405 | do |
7ab12479 JB |
406 | { |
407 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
408 | ||
409 | if (found) | |
410 | { | |
d5783c40 | 411 | *part = found - 1; |
7ab12479 JB |
412 | return tem; |
413 | } | |
414 | ||
d5783c40 | 415 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 416 | } |
d5783c40 JB |
417 | while (! EQ (tem, first)); |
418 | ||
419 | return Qnil; | |
7ab12479 JB |
420 | } |
421 | ||
ab17c3f2 | 422 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
44fa5b1e JB |
423 | "Return window containing row ROW, column COLUMN on FRAME.\n\ |
424 | If omitted, FRAME defaults to the currently selected frame.\n\ | |
425 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 426 | column 0.") |
44fa5b1e JB |
427 | (row, column, frame) |
428 | Lisp_Object row, column, frame; | |
7ab12479 JB |
429 | { |
430 | int part; | |
431 | ||
4b206065 | 432 | #ifdef MULTI_FRAME |
44fa5b1e JB |
433 | if (NILP (frame)) |
434 | XSET (frame, Lisp_Frame, selected_frame); | |
d5783c40 | 435 | else |
44fa5b1e | 436 | CHECK_LIVE_FRAME (frame, 2); |
4b206065 | 437 | #endif |
95605e15 JB |
438 | CHECK_NUMBER (row, 0); |
439 | CHECK_NUMBER (column, 1); | |
7ab12479 | 440 | |
44fa5b1e | 441 | return window_from_coordinates (XFRAME (frame), |
95605e15 | 442 | XINT (row), XINT (column), |
7ab12479 JB |
443 | &part); |
444 | } | |
445 | ||
446 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
447 | "Return current value of point in WINDOW.\n\ | |
448 | For a nonselected window, this is the value point would have\n\ | |
449 | if that window were selected.\n\ | |
450 | \n\ | |
451 | Note that, when WINDOW is the selected window and its buffer\n\ | |
452 | is also currently selected, the value returned is the same as (point).\n\ | |
453 | It would be more strictly correct to return the `top-level' value\n\ | |
454 | of point, outside of any save-excursion forms.\n\ | |
455 | But that is hard to define.") | |
456 | (window) | |
457 | Lisp_Object window; | |
458 | { | |
459 | register struct window *w = decode_window (window); | |
460 | ||
461 | if (w == XWINDOW (selected_window) | |
462 | && current_buffer == XBUFFER (w->buffer)) | |
463 | return Fpoint (); | |
464 | return Fmarker_position (w->pointm); | |
465 | } | |
466 | ||
467 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
468 | "Return position at which display currently starts in WINDOW.") | |
469 | (window) | |
470 | Lisp_Object window; | |
471 | { | |
472 | return Fmarker_position (decode_window (window)->start); | |
473 | } | |
474 | ||
475 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
476 | "Return position at which display currently ends in WINDOW.") | |
477 | (window) | |
478 | Lisp_Object window; | |
479 | { | |
480 | Lisp_Object value; | |
481 | struct window *w = decode_window (window); | |
482 | ||
483 | XSET (value, Lisp_Int, | |
484 | BUF_Z (current_buffer) - XFASTINT (w->window_end_pos)); | |
485 | ||
486 | return value; | |
487 | } | |
488 | ||
489 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
490 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
491 | (window, pos) | |
492 | Lisp_Object window, pos; | |
493 | { | |
494 | register struct window *w = decode_window (window); | |
495 | ||
496 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
497 | if (w == XWINDOW (selected_window)) | |
498 | Fgoto_char (pos); | |
499 | else | |
500 | set_marker_restricted (w->pointm, pos, w->buffer); | |
501 | ||
502 | return pos; | |
503 | } | |
504 | ||
505 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
506 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
507 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
508 | from overriding motion of point in order to display at this exact start.") | |
509 | (window, pos, noforce) | |
510 | Lisp_Object window, pos, noforce; | |
511 | { | |
512 | register struct window *w = decode_window (window); | |
513 | ||
514 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
515 | set_marker_restricted (w->start, pos, w->buffer); | |
516 | /* this is not right, but much easier than doing what is right. */ | |
517 | w->start_at_line_beg = Qnil; | |
265a9e55 | 518 | if (NILP (noforce)) |
7ab12479 JB |
519 | w->force_start = Qt; |
520 | w->update_mode_line = Qt; | |
521 | XFASTINT (w->last_modified) = 0; | |
62c07cc7 JB |
522 | if (!EQ (window, selected_window)) |
523 | windows_or_buffers_changed++; | |
7ab12479 JB |
524 | return pos; |
525 | } | |
526 | ||
527 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
528 | 1, 1, 0, | |
529 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
530 | See also `set-window-buffer-dedicated'.") | |
531 | (window) | |
532 | Lisp_Object window; | |
533 | { | |
534 | return decode_window (window)->dedicated; | |
535 | } | |
536 | ||
d207b766 RS |
537 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
538 | Sset_window_dedicated_p, 2, 2, 0, | |
539 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
540 | If it is dedicated, Emacs will not automatically change\n\ | |
541 | which buffer appears in it.\n\ | |
542 | The second argument is the new value for the dedication flag;\n\ | |
543 | non-nil means yes.") | |
7ab12479 JB |
544 | (window, arg) |
545 | Lisp_Object window, arg; | |
546 | { | |
547 | register struct window *w = decode_window (window); | |
548 | ||
265a9e55 | 549 | if (NILP (arg)) |
7ab12479 JB |
550 | w->dedicated = Qnil; |
551 | else | |
d207b766 | 552 | w->dedicated = Qt; |
7ab12479 JB |
553 | |
554 | return w->dedicated; | |
555 | } | |
556 | ||
557 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
558 | 0, 1, 0, | |
559 | "Return the display-table that WINDOW is using.") | |
560 | (window) | |
561 | Lisp_Object window; | |
562 | { | |
563 | return decode_window (window)->display_table; | |
564 | } | |
565 | ||
566 | /* Get the display table for use currently on window W. | |
567 | This is either W's display table or W's buffer's display table. | |
568 | Ignore the specified tables if they are not valid; | |
569 | if no valid table is specified, return 0. */ | |
570 | ||
571 | struct Lisp_Vector * | |
572 | window_display_table (w) | |
573 | struct window *w; | |
574 | { | |
575 | Lisp_Object tem; | |
576 | tem = w->display_table; | |
577 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
578 | return XVECTOR (tem); | |
579 | tem = XBUFFER (w->buffer)->display_table; | |
580 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
581 | return XVECTOR (tem); | |
582 | tem = Vstandard_display_table; | |
583 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
584 | return XVECTOR (tem); | |
585 | return 0; | |
586 | } | |
587 | ||
3a2712f9 | 588 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
589 | "Set WINDOW's display-table to TABLE.") |
590 | (window, table) | |
591 | register Lisp_Object window, table; | |
592 | { | |
593 | register struct window *w; | |
594 | register Lisp_Object z; /* Return value. */ | |
595 | ||
596 | w = decode_window (window); | |
597 | w->display_table = table; | |
598 | return table; | |
599 | } | |
600 | \f | |
601 | /* Record info on buffer window w is displaying | |
602 | when it is about to cease to display that buffer. */ | |
603 | static | |
604 | unshow_buffer (w) | |
605 | register struct window *w; | |
606 | { | |
607 | Lisp_Object buf = w->buffer; | |
608 | ||
609 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) | |
610 | abort (); | |
611 | ||
612 | if (w == XWINDOW (selected_window) | |
613 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
614 | /* Do this except when the selected window's buffer | |
615 | is being removed from some other window. */ | |
616 | XBUFFER (buf)->last_window_start = marker_position (w->start); | |
617 | ||
618 | /* Point in the selected window's buffer | |
619 | is actually stored in that buffer, and the window's pointm isn't used. | |
620 | So don't clobber point in that buffer. */ | |
621 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
622 | BUF_PT (XBUFFER (buf)) | |
623 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
624 | marker_position (w->pointm), | |
625 | BUF_ZV (XBUFFER (buf))); | |
626 | } | |
627 | ||
628 | /* Put replacement into the window structure in place of old. */ | |
629 | static | |
630 | replace_window (old, replacement) | |
631 | Lisp_Object old, replacement; | |
632 | { | |
633 | register Lisp_Object tem; | |
634 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
635 | ||
44fa5b1e JB |
636 | /* If OLD is its frame's root_window, then replacement is the new |
637 | root_window for that frame. */ | |
7ab12479 | 638 | |
44fa5b1e JB |
639 | if (old == FRAME_ROOT_WINDOW (XFRAME (o->frame))) |
640 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; | |
7ab12479 JB |
641 | |
642 | p->left = o->left; | |
643 | p->top = o->top; | |
644 | p->width = o->width; | |
645 | p->height = o->height; | |
646 | ||
647 | p->next = tem = o->next; | |
265a9e55 | 648 | if (!NILP (tem)) |
7ab12479 JB |
649 | XWINDOW (tem)->prev = replacement; |
650 | ||
651 | p->prev = tem = o->prev; | |
265a9e55 | 652 | if (!NILP (tem)) |
7ab12479 JB |
653 | XWINDOW (tem)->next = replacement; |
654 | ||
655 | p->parent = tem = o->parent; | |
265a9e55 | 656 | if (!NILP (tem)) |
7ab12479 JB |
657 | { |
658 | if (EQ (XWINDOW (tem)->vchild, old)) | |
659 | XWINDOW (tem)->vchild = replacement; | |
660 | if (EQ (XWINDOW (tem)->hchild, old)) | |
661 | XWINDOW (tem)->hchild = replacement; | |
662 | } | |
663 | ||
664 | /*** Here, if replacement is a vertical combination | |
665 | and so is its new parent, we should make replacement's | |
666 | children be children of that parent instead. ***/ | |
667 | } | |
668 | ||
669 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
670 | "Remove WINDOW from the display. Default is selected window.") | |
671 | (window) | |
672 | register Lisp_Object window; | |
673 | { | |
674 | register Lisp_Object tem, parent, sib; | |
675 | register struct window *p; | |
676 | register struct window *par; | |
677 | ||
265a9e55 | 678 | if (NILP (window)) |
7ab12479 JB |
679 | window = selected_window; |
680 | else | |
681 | CHECK_WINDOW (window, 0); | |
682 | ||
683 | p = XWINDOW (window); | |
684 | parent = p->parent; | |
265a9e55 | 685 | if (NILP (parent)) |
7ab12479 JB |
686 | error ("Attempt to delete minibuffer or sole ordinary window"); |
687 | par = XWINDOW (parent); | |
688 | ||
689 | windows_or_buffers_changed++; | |
690 | ||
691 | if (EQ (window, selected_window)) | |
692 | Fselect_window (Fnext_window (window, Qnil, Qnil)); | |
693 | ||
694 | tem = p->buffer; | |
695 | /* tem is null for dummy parent windows | |
696 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 697 | if (!NILP (tem)) |
7ab12479 JB |
698 | { |
699 | unshow_buffer (p); | |
700 | unchain_marker (p->pointm); | |
701 | unchain_marker (p->start); | |
702 | p->buffer = Qnil; | |
703 | } | |
704 | ||
705 | tem = p->next; | |
265a9e55 | 706 | if (!NILP (tem)) |
7ab12479 JB |
707 | XWINDOW (tem)->prev = p->prev; |
708 | ||
709 | tem = p->prev; | |
265a9e55 | 710 | if (!NILP (tem)) |
7ab12479 JB |
711 | XWINDOW (tem)->next = p->next; |
712 | ||
713 | if (EQ (window, par->hchild)) | |
714 | par->hchild = p->next; | |
715 | if (EQ (window, par->vchild)) | |
716 | par->vchild = p->next; | |
717 | ||
718 | /* Find one of our siblings to give our space to. */ | |
719 | sib = p->prev; | |
265a9e55 | 720 | if (NILP (sib)) |
7ab12479 JB |
721 | { |
722 | /* If p gives its space to its next sibling, that sibling needs | |
723 | to have its top/left side pulled back to where p's is. | |
724 | set_window_{height,width} will re-position the sibling's | |
725 | children. */ | |
726 | sib = p->next; | |
727 | XFASTINT (XWINDOW (sib)->top) = p->top; | |
728 | XFASTINT (XWINDOW (sib)->left) = p->left; | |
729 | } | |
730 | ||
731 | /* Stretch that sibling. */ | |
265a9e55 | 732 | if (!NILP (par->vchild)) |
7ab12479 JB |
733 | set_window_height (sib, |
734 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
735 | 1); | |
265a9e55 | 736 | if (!NILP (par->hchild)) |
7ab12479 JB |
737 | set_window_width (sib, |
738 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
739 | 1); | |
740 | ||
741 | /* If parent now has only one child, | |
742 | put the child into the parent's place. */ | |
743 | ||
744 | tem = par->hchild; | |
265a9e55 | 745 | if (NILP (tem)) |
7ab12479 | 746 | tem = par->vchild; |
265a9e55 | 747 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 JB |
748 | replace_window (parent, tem); |
749 | return Qnil; | |
750 | } | |
751 | \f | |
7ab12479 | 752 | |
44fa5b1e | 753 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 JB |
754 | |
755 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
756 | "Return next window after WINDOW in canonical ordering of windows.\n\ | |
d5783c40 JB |
757 | If omitted, WINDOW defaults to the selected window.\n\ |
758 | \n\ | |
759 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
760 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
761 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
762 | minibuffer even if it is active.\n\ | |
763 | \n\ | |
44fa5b1e JB |
764 | Several frames may share a single minibuffer; if the minibuffer\n\ |
765 | counts, all windows on all frames that share that minibuffer count\n\ | |
d5783c40 | 766 | too. This means that next-window may be used to iterate through the\n\ |
44fa5b1e JB |
767 | set of windows even when the minibuffer is on another frame. If the\n\ |
768 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 769 | \n\ |
44fa5b1e JB |
770 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
771 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
772 | above. If neither nil nor t, restrict to WINDOW's frame.") | |
773 | (window, minibuf, all_frames) | |
774 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
775 | { |
776 | register Lisp_Object tem; | |
d5783c40 | 777 | Lisp_Object start_window; |
7ab12479 | 778 | |
265a9e55 | 779 | if (NILP (window)) |
7ab12479 JB |
780 | window = selected_window; |
781 | else | |
782 | CHECK_WINDOW (window, 0); | |
783 | ||
d5783c40 JB |
784 | start_window = window; |
785 | ||
786 | /* minibuf == nil may or may not include minibuffers. | |
787 | Decide if it does. */ | |
265a9e55 | 788 | if (NILP (minibuf)) |
d5783c40 JB |
789 | minibuf = (minibuf_level ? Qt : Qlambda); |
790 | ||
44fa5b1e JB |
791 | /* all_frames == nil doesn't specify which frames to include. |
792 | Decide which frames it includes. */ | |
793 | if (NILP (all_frames)) | |
794 | all_frames = (EQ (minibuf, Qt) | |
795 | ? (FRAME_MINIBUF_WINDOW | |
796 | (XFRAME | |
797 | (WINDOW_FRAME | |
d5783c40 JB |
798 | (XWINDOW (window))))) |
799 | : Qnil); | |
44fa5b1e JB |
800 | else if (! EQ (all_frames, Qt)) |
801 | all_frames = Qnil; | |
7ab12479 JB |
802 | |
803 | /* Do this loop at least once, to get the next window, and perhaps | |
804 | again, if we hit the minibuffer and that is not acceptable. */ | |
805 | do | |
806 | { | |
807 | /* Find a window that actually has a next one. This loop | |
808 | climbs up the tree. */ | |
265a9e55 JB |
809 | while (tem = XWINDOW (window)->next, NILP (tem)) |
810 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 811 | window = tem; |
d5783c40 | 812 | else |
7ab12479 | 813 | { |
44fa5b1e JB |
814 | /* We've reached the end of this frame. |
815 | Which other frames are acceptable? */ | |
816 | tem = WINDOW_FRAME (XWINDOW (window)); | |
817 | #ifdef MULTI_FRAME | |
818 | if (! NILP (all_frames)) | |
819 | tem = next_frame (tem, all_frames); | |
7ab12479 | 820 | #endif |
44fa5b1e | 821 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 822 | |
7ab12479 JB |
823 | break; |
824 | } | |
825 | ||
826 | window = tem; | |
d5783c40 | 827 | |
7ab12479 JB |
828 | /* If we're in a combination window, find its first child and |
829 | recurse on that. Otherwise, we've found the window we want. */ | |
830 | while (1) | |
831 | { | |
265a9e55 | 832 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 833 | window = XWINDOW (window)->hchild; |
265a9e55 | 834 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
835 | window = XWINDOW (window)->vchild; |
836 | else break; | |
837 | } | |
838 | } | |
d5783c40 JB |
839 | /* Which windows are acceptible? |
840 | Exit the loop and accept this window if | |
7ab12479 | 841 | this isn't a minibuffer window, or |
d5783c40 JB |
842 | we're accepting minibuffer windows, or |
843 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 844 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 JB |
845 | && ! EQ (minibuf, Qt) |
846 | && window != start_window); | |
7ab12479 JB |
847 | |
848 | return window; | |
849 | } | |
850 | ||
851 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
d5783c40 JB |
852 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
853 | If omitted, WINDOW defaults to the selected window.\n\ | |
854 | \n\ | |
855 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
856 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
857 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
858 | minibuffer even if it is active.\n\ | |
859 | \n\ | |
44fa5b1e JB |
860 | Several frames may share a single minibuffer; if the minibuffer\n\ |
861 | counts, all windows on all frames that share that minibuffer count\n\ | |
d5783c40 | 862 | too. This means that previous-window may be used to iterate through\n\ |
44fa5b1e JB |
863 | the set of windows even when the minibuffer is on another frame. If\n\ |
864 | the minibuffer does not count, only windows from WINDOW's frame\n\ | |
d5783c40 JB |
865 | count.\n\ |
866 | \n\ | |
44fa5b1e JB |
867 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
868 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
869 | above. If neither nil nor t, restrict to WINDOW's frame.") | |
870 | (window, minibuf, all_frames) | |
871 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
872 | { |
873 | register Lisp_Object tem; | |
d5783c40 | 874 | Lisp_Object start_window; |
7ab12479 | 875 | |
265a9e55 | 876 | if (NILP (window)) |
7ab12479 JB |
877 | window = selected_window; |
878 | else | |
879 | CHECK_WINDOW (window, 0); | |
880 | ||
d5783c40 JB |
881 | start_window = window; |
882 | ||
883 | /* minibuf == nil may or may not include minibuffers. | |
884 | Decide if it does. */ | |
265a9e55 | 885 | if (NILP (minibuf)) |
d5783c40 JB |
886 | minibuf = (minibuf_level ? Qt : Qlambda); |
887 | ||
44fa5b1e JB |
888 | /* all_frames == nil doesn't specify which frames to include. |
889 | Decide which frames it includes. */ | |
890 | if (NILP (all_frames)) | |
891 | all_frames = (EQ (minibuf, Qt) | |
892 | ? (FRAME_MINIBUF_WINDOW | |
893 | (XFRAME | |
894 | (WINDOW_FRAME | |
d5783c40 JB |
895 | (XWINDOW (window))))) |
896 | : Qnil); | |
44fa5b1e JB |
897 | else if (! EQ (all_frames, Qt)) |
898 | all_frames = Qnil; | |
7ab12479 JB |
899 | |
900 | /* Do this loop at least once, to get the previous window, and perhaps | |
901 | again, if we hit the minibuffer and that is not acceptable. */ | |
902 | do | |
903 | { | |
904 | /* Find a window that actually has a previous one. This loop | |
905 | climbs up the tree. */ | |
265a9e55 JB |
906 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
907 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 908 | window = tem; |
d5783c40 | 909 | else |
7ab12479 | 910 | { |
44fa5b1e JB |
911 | /* We have found the top window on the frame. |
912 | Which frames are acceptable? */ | |
913 | tem = WINDOW_FRAME (XWINDOW (window)); | |
914 | #ifdef MULTI_FRAME | |
915 | if (! NILP (all_frames)) | |
916 | tem = next_frame (tem, all_frames); | |
7ab12479 | 917 | #endif |
44fa5b1e | 918 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 919 | |
7ab12479 JB |
920 | break; |
921 | } | |
922 | ||
923 | window = tem; | |
924 | /* If we're in a combination window, find its last child and | |
925 | recurse on that. Otherwise, we've found the window we want. */ | |
926 | while (1) | |
927 | { | |
265a9e55 | 928 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 929 | window = XWINDOW (window)->hchild; |
265a9e55 | 930 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
931 | window = XWINDOW (window)->vchild; |
932 | else break; | |
265a9e55 | 933 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
934 | window = tem; |
935 | } | |
936 | } | |
d5783c40 JB |
937 | /* Which windows are acceptable? |
938 | Exit the loop and accept this window if | |
7ab12479 | 939 | this isn't a minibuffer window, or |
d5783c40 JB |
940 | we're accepting minibuffer windows, or |
941 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 942 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 JB |
943 | && !EQ (minibuf, Qt) |
944 | && window != start_window); | |
7ab12479 JB |
945 | |
946 | return window; | |
947 | } | |
948 | ||
62c07cc7 | 949 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
950 | "Select the ARG'th different window on this frame.\n\ |
951 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
952 | This command selects the window ARG steps away in that order.\n\ |
953 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e JB |
954 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
955 | (n, all_frames) | |
956 | register Lisp_Object n, all_frames; | |
7ab12479 JB |
957 | { |
958 | register int i; | |
959 | register Lisp_Object w; | |
960 | ||
961 | CHECK_NUMBER (n, 0); | |
962 | w = selected_window; | |
963 | i = XINT (n); | |
964 | ||
965 | while (i > 0) | |
966 | { | |
44fa5b1e | 967 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
968 | i--; |
969 | } | |
970 | while (i < 0) | |
971 | { | |
44fa5b1e | 972 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
973 | i++; |
974 | } | |
975 | Fselect_window (w); | |
976 | return Qnil; | |
977 | } | |
978 | \f | |
979 | /* Look at all windows, performing an operation specified by TYPE | |
980 | with argument OBJ. | |
44fa5b1e JB |
981 | If FRAMES is Qt, look at all frames, if Qnil, look at just the selected |
982 | frame. If FRAMES is a frame, just look at windows on that frame. | |
7ab12479 JB |
983 | If MINI is non-zero, perform the operation on minibuffer windows too. |
984 | */ | |
985 | ||
986 | enum window_loop | |
987 | { | |
988 | WINDOW_LOOP_UNUSED, | |
989 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
990 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
991 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
992 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
993 | GET_LARGEST_WINDOW, | |
994 | UNSHOW_BUFFER, /* Arg is buffer */ | |
995 | }; | |
996 | ||
997 | static Lisp_Object | |
44fa5b1e | 998 | window_loop (type, obj, mini, frames) |
7ab12479 | 999 | enum window_loop type; |
44fa5b1e | 1000 | register Lisp_Object obj, frames; |
7ab12479 JB |
1001 | int mini; |
1002 | { | |
1003 | register Lisp_Object w; | |
1004 | register Lisp_Object best_window; | |
1005 | register Lisp_Object next_window; | |
4b206065 | 1006 | register Lisp_Object last_window; |
44fa5b1e JB |
1007 | FRAME_PTR frame; |
1008 | ||
4b206065 | 1009 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1010 | /* If we're only looping through windows on a particular frame, |
1011 | frame points to that frame. If we're looping through windows | |
1012 | on all frames, frame is 0. */ | |
1013 | if (FRAMEP (frames)) | |
1014 | frame = XFRAME (frames); | |
1015 | else if (NILP (frames)) | |
1016 | frame = selected_frame; | |
7ab12479 | 1017 | else |
44fa5b1e | 1018 | frame = 0; |
4b206065 JB |
1019 | #else |
1020 | frame = 0; | |
1021 | #endif | |
7ab12479 JB |
1022 | |
1023 | /* Pick a window to start with. */ | |
1024 | if (XTYPE (obj) == Lisp_Window) | |
4b206065 | 1025 | w = obj; |
44fa5b1e | 1026 | else if (frame) |
4b206065 | 1027 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1028 | else |
4b206065 JB |
1029 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1030 | ||
1031 | /* Figure out the last window we're going to mess with. Since | |
1032 | Fnext_window, given the same options, is guaranteed to go in a | |
1033 | ring, we can just use Fprevious_window to find the last one. | |
1034 | ||
1035 | We can't just wait until we hit the first window again, because | |
1036 | it might be deleted. */ | |
1037 | ||
1038 | #ifdef MULTI_FRAME | |
1039 | if (frame) | |
1040 | last_window = Fprevious_window (w, (mini ? Qt : Qnil), Qlambda); | |
1041 | else | |
1042 | #endif /* MULTI_FRAME */ | |
1043 | /* We know frame is 0, so we're looping through all frames. | |
1044 | Or we know this isn't a MULTI_FRAME Emacs, so who cares? */ | |
1045 | last_window = Fprevious_window (w, mini ? Qt : Qnil, Qt); | |
7ab12479 | 1046 | |
7ab12479 | 1047 | best_window = Qnil; |
4b206065 | 1048 | for (;;) |
7ab12479 JB |
1049 | { |
1050 | /* Pick the next window now, since some operations will delete | |
1051 | the current window. */ | |
44fa5b1e JB |
1052 | #ifdef MULTI_FRAME |
1053 | if (frame) | |
d5783c40 | 1054 | next_window = Fnext_window (w, (mini ? Qt : Qnil), Qlambda); |
7ab12479 | 1055 | else |
4b206065 | 1056 | #endif /* MULTI_FRAME */ |
44fa5b1e JB |
1057 | /* We know frame is 0, so we're looping through all frames. |
1058 | Or we know this isn't a MULTI_FRAME Emacs, so who cares? */ | |
7ab12479 JB |
1059 | next_window = Fnext_window (w, mini ? Qt : Qnil, Qt); |
1060 | ||
1061 | if (!MINI_WINDOW_P (XWINDOW (w)) | |
1062 | || (mini && minibuf_level > 0)) | |
1063 | switch (type) | |
1064 | { | |
1065 | case GET_BUFFER_WINDOW: | |
1066 | #if 0 | |
44fa5b1e JB |
1067 | /* Ignore invisible and iconified frames. */ |
1068 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1069 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1070 | break; |
1071 | #endif | |
1072 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) | |
1073 | return w; | |
1074 | break; | |
1075 | ||
1076 | case GET_LRU_WINDOW: | |
1077 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1078 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
44fa5b1e | 1079 | != FRAME_WIDTH (frame)) |
7ab12479 JB |
1080 | break; |
1081 | #if 0 | |
44fa5b1e JB |
1082 | /* Ignore invisible and iconified frames. */ |
1083 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1084 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1085 | break; |
1086 | #endif | |
1087 | /* Ignore dedicated windows and minibuffers. */ | |
1088 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1089 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1090 | break; |
265a9e55 | 1091 | if (NILP (best_window) |
7ab12479 JB |
1092 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1093 | > XFASTINT (XWINDOW (w)->use_time))) | |
1094 | best_window = w; | |
1095 | break; | |
1096 | ||
1097 | case DELETE_OTHER_WINDOWS: | |
1098 | if (XWINDOW (w) != XWINDOW (obj)) | |
1099 | Fdelete_window (w); | |
1100 | break; | |
1101 | ||
1102 | case DELETE_BUFFER_WINDOWS: | |
1103 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1104 | { | |
1105 | /* If we're deleting the buffer displayed in the only window | |
44fa5b1e | 1106 | on the frame, find a new buffer to display there. */ |
265a9e55 | 1107 | if (NILP (XWINDOW (w)->parent)) |
7ab12479 JB |
1108 | { |
1109 | Lisp_Object new_buffer = Fother_buffer (obj); | |
265a9e55 | 1110 | if (NILP (new_buffer)) |
7ab12479 JB |
1111 | new_buffer |
1112 | = Fget_buffer_create (build_string ("*scratch*")); | |
1113 | Fset_window_buffer (w, new_buffer); | |
1114 | Fset_buffer (XWINDOW (w)->buffer); | |
1115 | } | |
1116 | else | |
1117 | Fdelete_window (w); | |
1118 | } | |
1119 | break; | |
1120 | ||
1121 | case GET_LARGEST_WINDOW: | |
1122 | #if 0 | |
44fa5b1e JB |
1123 | /* Ignore invisible and iconified frames. */ |
1124 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1125 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1126 | break; |
1127 | #endif | |
1128 | /* Ignore dedicated windows and minibuffers. */ | |
1129 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1130 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1131 | break; |
1132 | { | |
1133 | struct window *best_window_ptr = XWINDOW (best_window); | |
1134 | struct window *w_ptr = XWINDOW (w); | |
265a9e55 | 1135 | if (NILP (best_window) || |
7ab12479 JB |
1136 | (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width)) |
1137 | > (XFASTINT (best_window_ptr->height) | |
1138 | * XFASTINT (best_window_ptr->width))) | |
1139 | best_window = w; | |
1140 | } | |
1141 | break; | |
1142 | ||
1143 | case UNSHOW_BUFFER: | |
1144 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1145 | { | |
1146 | /* Find another buffer to show in this window. */ | |
1147 | Lisp_Object another_buffer = Fother_buffer (obj); | |
265a9e55 | 1148 | if (NILP (another_buffer)) |
7ab12479 JB |
1149 | another_buffer |
1150 | = Fget_buffer_create (build_string ("*scratch*")); | |
1151 | Fset_window_buffer (w, another_buffer); | |
1152 | if (EQ (w, selected_window)) | |
1153 | Fset_buffer (XWINDOW (w)->buffer); | |
1154 | } | |
1155 | break; | |
1156 | } | |
4b206065 JB |
1157 | |
1158 | if (EQ (w, last_window)) | |
1159 | break; | |
1160 | ||
7ab12479 JB |
1161 | w = next_window; |
1162 | } | |
7ab12479 JB |
1163 | |
1164 | return best_window; | |
1165 | } | |
1166 | \f | |
1167 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, | |
1168 | "Return the window least recently selected or used for display.\n\ | |
44fa5b1e JB |
1169 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1170 | frame, search only that frame.\n") | |
1171 | (frames) | |
1172 | Lisp_Object frames; | |
7ab12479 JB |
1173 | { |
1174 | register Lisp_Object w; | |
1175 | /* First try for a window that is full-width */ | |
44fa5b1e | 1176 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frames); |
265a9e55 | 1177 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1178 | return w; |
1179 | /* If none of them, try the rest */ | |
44fa5b1e | 1180 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frames); |
7ab12479 JB |
1181 | } |
1182 | ||
1183 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1184 | "Return the largest window in area.\n\ | |
44fa5b1e JB |
1185 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1186 | frame, search only that frame.\n") | |
1187 | (frame) | |
1188 | Lisp_Object frame; | |
7ab12479 JB |
1189 | { |
1190 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1191 | frame); |
7ab12479 JB |
1192 | } |
1193 | ||
1194 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1195 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
44fa5b1e JB |
1196 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1197 | frame, search only that frame.\n") | |
1198 | (buffer, frame) | |
1199 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1200 | { |
1201 | buffer = Fget_buffer (buffer); | |
1202 | if (XTYPE (buffer) == Lisp_Buffer) | |
44fa5b1e | 1203 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1204 | else |
1205 | return Qnil; | |
1206 | } | |
1207 | ||
1208 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1209 | 0, 1, "", | |
44fa5b1e JB |
1210 | "Make WINDOW (or the selected window) fill its frame.\n\ |
1211 | Only the frame WINDOW is on is affected.") | |
7ab12479 JB |
1212 | (window) |
1213 | Lisp_Object window; | |
1214 | { | |
1215 | struct window *w; | |
1216 | int opoint = point; | |
1217 | struct buffer *obuf = current_buffer; | |
1218 | int top; | |
1219 | ||
265a9e55 | 1220 | if (NILP (window)) |
7ab12479 JB |
1221 | window = selected_window; |
1222 | else | |
1223 | CHECK_WINDOW (window, 0); | |
1224 | ||
1225 | w = XWINDOW (window); | |
1226 | top = XFASTINT (w->top); | |
1227 | ||
44fa5b1e | 1228 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME(w)); |
7ab12479 JB |
1229 | |
1230 | Fset_buffer (w->buffer); | |
1231 | SET_PT (marker_position (w->start)); | |
1232 | Frecenter (make_number (top)); | |
1233 | ||
1234 | set_buffer_internal (obuf); | |
1235 | SET_PT (opoint); | |
1236 | return Qnil; | |
1237 | } | |
1238 | ||
1239 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
1240 | 1, 1, "bDelete windows on (buffer): ", | |
1241 | "Delete all windows showing BUFFER.") | |
1242 | (buffer) | |
1243 | Lisp_Object buffer; | |
1244 | { | |
265a9e55 | 1245 | if (!NILP (buffer)) |
7ab12479 JB |
1246 | { |
1247 | buffer = Fget_buffer (buffer); | |
1248 | CHECK_BUFFER (buffer, 0); | |
1249 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, Qt); | |
1250 | } | |
1251 | return Qnil; | |
1252 | } | |
1253 | ||
1254 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1255 | Sreplace_buffer_in_windows, | |
1256 | 1, 1, "bReplace buffer in windows: ", | |
1257 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1258 | (buffer) | |
1259 | Lisp_Object buffer; | |
1260 | { | |
265a9e55 | 1261 | if (!NILP (buffer)) |
7ab12479 JB |
1262 | { |
1263 | buffer = Fget_buffer (buffer); | |
1264 | CHECK_BUFFER (buffer, 0); | |
1265 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1266 | } | |
1267 | return Qnil; | |
1268 | } | |
1269 | \f | |
1270 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1271 | |
1272 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1273 | might crash Emacs. */ | |
1274 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1275 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1276 | ||
1277 | /* Make sure that window_min_height and window_min_width are | |
1278 | not too small; if they are, set them to safe minima. */ | |
1279 | ||
1280 | static void | |
1281 | check_min_window_sizes () | |
1282 | { | |
1283 | /* Smaller values might permit a crash. */ | |
1284 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1285 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1286 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1287 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1288 | } | |
1289 | ||
1290 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1291 | minimum allowable size. */ | |
1292 | extern void | |
1293 | check_frame_size (frame, rows, cols) | |
1294 | FRAME_PTR frame; | |
1295 | int *rows, *cols; | |
1296 | { | |
1297 | /* For height, we have to see whether the frame has a minibuffer, and | |
1298 | whether it wants a mode line. */ | |
1299 | int min_height = | |
1300 | ((FRAME_MINIBUF_ONLY_P (frame) | |
1301 | || ! FRAME_HAS_MINIBUF_P (frame)) | |
1302 | ? MIN_SAFE_WINDOW_HEIGHT | |
1303 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); | |
1304 | ||
1305 | if (*rows < min_height) | |
1306 | *rows = min_height; | |
1307 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1308 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1309 | } | |
1310 | ||
7ab12479 JB |
1311 | /* Normally the window is deleted if it gets too small. |
1312 | nodelete nonzero means do not do this. | |
1313 | (The caller should check later and do so if appropriate) */ | |
1314 | ||
1315 | set_window_height (window, height, nodelete) | |
1316 | Lisp_Object window; | |
1317 | int height; | |
1318 | int nodelete; | |
1319 | { | |
1320 | register struct window *w = XWINDOW (window); | |
1321 | register struct window *c; | |
1322 | int oheight = XFASTINT (w->height); | |
1323 | int top, pos, lastbot, opos, lastobot; | |
1324 | Lisp_Object child; | |
1325 | ||
a481b3ea JB |
1326 | check_min_window_sizes (); |
1327 | ||
7ab12479 | 1328 | if (!nodelete |
265a9e55 | 1329 | && ! NILP (w->parent) |
7ab12479 JB |
1330 | && height < window_min_height) |
1331 | { | |
1332 | Fdelete_window (window); | |
1333 | return; | |
1334 | } | |
1335 | ||
1336 | XFASTINT (w->last_modified) = 0; | |
1337 | windows_or_buffers_changed++; | |
1338 | XFASTINT (w->height) = height; | |
265a9e55 | 1339 | if (!NILP (w->hchild)) |
7ab12479 | 1340 | { |
265a9e55 | 1341 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1342 | { |
1343 | XWINDOW (child)->top = w->top; | |
1344 | set_window_height (child, height, nodelete); | |
1345 | } | |
1346 | } | |
265a9e55 | 1347 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1348 | { |
1349 | lastbot = top = XFASTINT (w->top); | |
1350 | lastobot = 0; | |
265a9e55 | 1351 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1352 | { |
1353 | c = XWINDOW (child); | |
1354 | ||
1355 | opos = lastobot + XFASTINT (c->height); | |
1356 | ||
1357 | XFASTINT (c->top) = lastbot; | |
1358 | ||
1359 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1360 | ||
1361 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1362 | set_window_height (child, pos + top - lastbot, 1); | |
1363 | ||
1364 | /* Now advance child to next window, | |
1365 | and set lastbot if child was not just deleted. */ | |
1366 | lastbot = pos + top; | |
1367 | lastobot = opos; | |
1368 | } | |
1369 | /* Now delete any children that became too small. */ | |
1370 | if (!nodelete) | |
265a9e55 | 1371 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1372 | { |
1373 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | /* Recursively set width of WINDOW and its inferiors. */ | |
1379 | ||
1380 | set_window_width (window, width, nodelete) | |
1381 | Lisp_Object window; | |
1382 | int width; | |
1383 | int nodelete; | |
1384 | { | |
1385 | register struct window *w = XWINDOW (window); | |
1386 | register struct window *c; | |
1387 | int owidth = XFASTINT (w->width); | |
1388 | int left, pos, lastright, opos, lastoright; | |
1389 | Lisp_Object child; | |
1390 | ||
1391 | if (!nodelete && width < window_min_width) | |
1392 | { | |
1393 | Fdelete_window (window); | |
1394 | return; | |
1395 | } | |
1396 | ||
1397 | XFASTINT (w->last_modified) = 0; | |
1398 | windows_or_buffers_changed++; | |
1399 | XFASTINT (w->width) = width; | |
265a9e55 | 1400 | if (!NILP (w->vchild)) |
7ab12479 | 1401 | { |
265a9e55 | 1402 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1403 | { |
1404 | XWINDOW (child)->left = w->left; | |
1405 | set_window_width (child, width, nodelete); | |
1406 | } | |
1407 | } | |
265a9e55 | 1408 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1409 | { |
1410 | lastright = left = XFASTINT (w->left); | |
1411 | lastoright = 0; | |
265a9e55 | 1412 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1413 | { |
1414 | c = XWINDOW (child); | |
1415 | ||
1416 | opos = lastoright + XFASTINT (c->width); | |
1417 | ||
1418 | XFASTINT (c->left) = lastright; | |
1419 | ||
1420 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1421 | ||
1422 | /* Inhibit deletion for becoming too small */ | |
1423 | set_window_width (child, pos + left - lastright, 1); | |
1424 | ||
1425 | /* Now advance child to next window, | |
1426 | and set lastright if child was not just deleted. */ | |
1427 | lastright = pos + left, lastoright = opos; | |
1428 | } | |
1429 | /* Delete children that became too small */ | |
1430 | if (!nodelete) | |
265a9e55 | 1431 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1432 | { |
1433 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1434 | } | |
1435 | } | |
1436 | } | |
1437 | \f | |
1d8d96fa | 1438 | int window_select_count; |
7ab12479 JB |
1439 | |
1440 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1441 | "Make WINDOW display BUFFER as its contents.\n\ | |
1442 | BUFFER can be a buffer or buffer name.") | |
1443 | (window, buffer) | |
1444 | register Lisp_Object window, buffer; | |
1445 | { | |
1446 | register Lisp_Object tem; | |
1447 | register struct window *w = decode_window (window); | |
1448 | ||
1449 | buffer = Fget_buffer (buffer); | |
1450 | CHECK_BUFFER (buffer, 1); | |
1451 | ||
265a9e55 | 1452 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1453 | error ("Attempt to display deleted buffer"); |
1454 | ||
1455 | tem = w->buffer; | |
265a9e55 | 1456 | if (NILP (tem)) |
7ab12479 JB |
1457 | error ("Window is deleted"); |
1458 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1459 | is first being set up. */ | |
1460 | { | |
265a9e55 | 1461 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
7ab12479 JB |
1462 | error ("Window is dedicated to %s\n", tem); |
1463 | ||
1464 | unshow_buffer (w); | |
1465 | } | |
1466 | ||
1467 | w->buffer = buffer; | |
1468 | Fset_marker (w->pointm, | |
1469 | make_number (BUF_PT (XBUFFER (buffer))), | |
1470 | buffer); | |
1471 | set_marker_restricted (w->start, | |
1472 | make_number (XBUFFER (buffer)->last_window_start), | |
1473 | buffer); | |
1474 | w->start_at_line_beg = Qnil; | |
1475 | XFASTINT (w->last_modified) = 0; | |
1476 | windows_or_buffers_changed++; | |
1477 | if (EQ (window, selected_window)) | |
1478 | Fset_buffer (buffer); | |
1479 | ||
1480 | return Qnil; | |
1481 | } | |
1482 | ||
1483 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1484 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1485 | The main editor command loop selects the buffer of the selected window\n\ | |
1486 | before each command.") | |
1487 | (window) | |
1488 | register Lisp_Object window; | |
1489 | { | |
1490 | register struct window *w; | |
1491 | register struct window *ow = XWINDOW (selected_window); | |
1492 | ||
1493 | CHECK_WINDOW (window, 0); | |
1494 | ||
1495 | w = XWINDOW (window); | |
1496 | ||
265a9e55 | 1497 | if (NILP (w->buffer)) |
7ab12479 JB |
1498 | error ("Trying to select deleted window or non-leaf window"); |
1499 | ||
1500 | XFASTINT (w->use_time) = ++window_select_count; | |
1501 | if (EQ (window, selected_window)) | |
1502 | return window; | |
1503 | ||
1504 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1505 | ow->buffer); | |
1506 | ||
1507 | selected_window = window; | |
44fa5b1e JB |
1508 | #ifdef MULTI_FRAME |
1509 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) | |
7ab12479 | 1510 | { |
44fa5b1e JB |
1511 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
1512 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1513 | } |
1514 | else | |
44fa5b1e | 1515 | selected_frame->selected_window = window; |
7ab12479 JB |
1516 | #endif |
1517 | ||
1518 | record_buffer (w->buffer); | |
1519 | Fset_buffer (w->buffer); | |
1520 | ||
1521 | /* Go to the point recorded in the window. | |
1522 | This is important when the buffer is in more | |
1523 | than one window. It also matters when | |
1524 | redisplay_window has altered point after scrolling, | |
1525 | because it makes the change only in the window. */ | |
1526 | { | |
1527 | register int new_point = marker_position (w->pointm); | |
1528 | if (new_point < BEGV) | |
1529 | SET_PT (BEGV); | |
1530 | if (new_point > ZV) | |
1531 | SET_PT (ZV); | |
1532 | else | |
1533 | SET_PT (new_point); | |
1534 | } | |
1535 | ||
1536 | windows_or_buffers_changed++; | |
1537 | return window; | |
1538 | } | |
1539 | ||
35aaf00c RM |
1540 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
1541 | "BDisplay buffer:\nP", | |
7ab12479 JB |
1542 | "Make BUFFER appear in some window but don't select it.\n\ |
1543 | BUFFER can be a buffer or a buffer name.\n\ | |
1544 | If BUFFER is shown already in some window, just use that one,\n\ | |
1545 | unless the window is the selected window and the optional second\n\ | |
1546 | argument NOT_THIS_WINDOW is non-nil.\n\ | |
1547 | Returns the window displaying BUFFER.") | |
1548 | (buffer, not_this_window) | |
1549 | register Lisp_Object buffer, not_this_window; | |
1550 | { | |
1551 | register Lisp_Object window; | |
1552 | ||
1553 | buffer = Fget_buffer (buffer); | |
1554 | CHECK_BUFFER (buffer, 0); | |
1555 | ||
265a9e55 | 1556 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1557 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1558 | ||
265a9e55 | 1559 | if (NILP (not_this_window) |
7ab12479 JB |
1560 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1561 | return selected_window; | |
1562 | ||
1563 | window = Fget_buffer_window (buffer, Qnil); | |
265a9e55 JB |
1564 | if (!NILP (window) |
1565 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
7ab12479 JB |
1566 | return window; |
1567 | ||
44fa5b1e JB |
1568 | #ifdef MULTI_FRAME |
1569 | /* If there are no frames open that have more than a minibuffer, | |
1570 | we need to create a new frame. */ | |
1571 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 JB |
1572 | { |
1573 | window | |
44fa5b1e | 1574 | = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 JB |
1575 | Fset_window_buffer (window, buffer); |
1576 | #if 0 | |
44fa5b1e | 1577 | Fselect_frame (XWINDOW (window)->frame, Qnil); |
7ab12479 JB |
1578 | #endif |
1579 | return window; | |
1580 | } | |
44fa5b1e | 1581 | #endif /* MULTI_FRAME */ |
7ab12479 | 1582 | |
43bad991 | 1583 | if (pop_up_windows |
44fa5b1e JB |
1584 | #ifdef MULTI_FRAME |
1585 | || FRAME_MINIBUF_ONLY_P (selected_frame) | |
43bad991 JB |
1586 | #endif |
1587 | ) | |
7ab12479 | 1588 | { |
44fa5b1e | 1589 | Lisp_Object frames = Qnil; |
43bad991 | 1590 | |
44fa5b1e JB |
1591 | #ifdef MULTI_FRAME |
1592 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) | |
1593 | XSET (frames, Lisp_Frame, last_nonminibuf_frame); | |
7ab12479 JB |
1594 | #endif |
1595 | /* Don't try to create a window if would get an error */ | |
1596 | if (split_height_threshold < window_min_height << 1) | |
1597 | split_height_threshold = window_min_height << 1; | |
1598 | ||
44fa5b1e | 1599 | window = Fget_largest_window (frames); |
7ab12479 | 1600 | |
265a9e55 | 1601 | if (!NILP (window) |
7ab12479 JB |
1602 | && window_height (window) >= split_height_threshold |
1603 | && | |
1604 | (XFASTINT (XWINDOW (window)->width) | |
44fa5b1e | 1605 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) |
7ab12479 JB |
1606 | window = Fsplit_window (window, Qnil, Qnil); |
1607 | else | |
1608 | { | |
44fa5b1e | 1609 | window = Fget_lru_window (frames); |
7ab12479 JB |
1610 | if ((EQ (window, selected_window) |
1611 | || EQ (XWINDOW (window)->parent, Qnil)) | |
1612 | && window_height (window) >= window_min_height << 1) | |
1613 | window = Fsplit_window (window, Qnil, Qnil); | |
1614 | } | |
1615 | } | |
1616 | else | |
1617 | window = Fget_lru_window (Qnil); | |
1618 | ||
1619 | Fset_window_buffer (window, buffer); | |
1620 | return window; | |
1621 | } | |
1622 | ||
1623 | void | |
1624 | temp_output_buffer_show (buf) | |
1625 | register Lisp_Object buf; | |
1626 | { | |
1627 | register struct buffer *old = current_buffer; | |
1628 | register Lisp_Object window; | |
1629 | register struct window *w; | |
1630 | ||
1631 | Fset_buffer (buf); | |
1632 | XBUFFER (buf)->save_modified = MODIFF; | |
1633 | BEGV = BEG; | |
1634 | ZV = Z; | |
1635 | SET_PT (BEG); | |
1636 | clip_changed = 1; | |
1637 | set_buffer_internal (old); | |
1638 | ||
1639 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
1640 | call1 (Vtemp_buffer_show_function, buf); | |
1641 | else | |
1642 | { | |
1643 | window = Fdisplay_buffer (buf, Qnil); | |
1644 | ||
44fa5b1e JB |
1645 | #ifdef MULTI_FRAME |
1646 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) | |
1647 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
1648 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
1649 | Vminibuf_scroll_window = window; |
1650 | w = XWINDOW (window); | |
1651 | XFASTINT (w->hscroll) = 0; | |
1652 | set_marker_restricted (w->start, make_number (1), buf); | |
1653 | set_marker_restricted (w->pointm, make_number (1), buf); | |
1654 | } | |
1655 | } | |
1656 | \f | |
1657 | static | |
1658 | make_dummy_parent (window) | |
1659 | Lisp_Object window; | |
1660 | { | |
1661 | register Lisp_Object old, new; | |
1662 | register struct window *o, *p; | |
1663 | ||
1664 | old = window; | |
1665 | XSETTYPE (old, Lisp_Vector); | |
1666 | new = Fcopy_sequence (old); | |
1667 | XSETTYPE (new, Lisp_Window); | |
1668 | ||
1669 | o = XWINDOW (old); | |
1670 | p = XWINDOW (new); | |
1671 | XFASTINT (p->sequence_number) = ++sequence_number; | |
1672 | ||
1673 | /* Put new into window structure in place of window */ | |
1674 | replace_window (window, new); | |
1675 | ||
1676 | o->next = Qnil; | |
1677 | o->prev = Qnil; | |
1678 | o->vchild = Qnil; | |
1679 | o->hchild = Qnil; | |
1680 | o->parent = new; | |
1681 | ||
1682 | p->start = Qnil; | |
1683 | p->pointm = Qnil; | |
1684 | p->buffer = Qnil; | |
1685 | } | |
1686 | ||
1687 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
1688 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
1689 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
1690 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
1691 | and put SIZE columns in the first of the pair.") | |
1692 | (window, chsize, horflag) | |
1693 | Lisp_Object window, chsize, horflag; | |
1694 | { | |
1695 | register Lisp_Object new; | |
1696 | register struct window *o, *p; | |
1697 | register int size; | |
1698 | ||
265a9e55 | 1699 | if (NILP (window)) |
7ab12479 JB |
1700 | window = selected_window; |
1701 | else | |
1702 | CHECK_WINDOW (window, 0); | |
1703 | ||
1704 | o = XWINDOW (window); | |
1705 | ||
265a9e55 | 1706 | if (NILP (chsize)) |
7ab12479 | 1707 | { |
265a9e55 | 1708 | if (!NILP (horflag)) |
7ab12479 JB |
1709 | /* Round odd size up, since this is for the left-hand window, |
1710 | and it will lose a column for the separators. */ | |
1711 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
1712 | else | |
1713 | size = XFASTINT (o->height) >> 1; | |
1714 | } | |
1715 | else | |
1716 | { | |
1717 | CHECK_NUMBER (chsize, 1); | |
1718 | size = XINT (chsize); | |
1719 | } | |
1720 | ||
1721 | if (MINI_WINDOW_P (o)) | |
1722 | error ("Attempt to split minibuffer window"); | |
44fa5b1e JB |
1723 | else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
1724 | error ("Attempt to split unsplittable frame"); | |
7ab12479 | 1725 | |
a481b3ea | 1726 | check_min_window_sizes (); |
7ab12479 | 1727 | |
265a9e55 | 1728 | if (NILP (horflag)) |
7ab12479 JB |
1729 | { |
1730 | if (size < window_min_height | |
1731 | || size + window_min_height > XFASTINT (o->height)) | |
1732 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1733 | if (NILP (o->parent) |
1734 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
1735 | { |
1736 | make_dummy_parent (window); | |
1737 | new = o->parent; | |
1738 | XWINDOW (new)->vchild = window; | |
1739 | } | |
1740 | } | |
1741 | else | |
1742 | { | |
1743 | if (size < window_min_width | |
1744 | || size + window_min_width > XFASTINT (o->width)) | |
1745 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1746 | if (NILP (o->parent) |
1747 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
1748 | { |
1749 | make_dummy_parent (window); | |
1750 | new = o->parent; | |
1751 | XWINDOW (new)->hchild = window; | |
1752 | } | |
1753 | } | |
1754 | ||
1755 | /* Now we know that window's parent is a vertical combination | |
1756 | if we are dividing vertically, or a horizontal combination | |
1757 | if we are making side-by-side windows */ | |
1758 | ||
1759 | windows_or_buffers_changed++; | |
1760 | new = make_window (); | |
1761 | p = XWINDOW (new); | |
1762 | ||
44fa5b1e | 1763 | p->frame = o->frame; |
7ab12479 | 1764 | p->next = o->next; |
265a9e55 | 1765 | if (!NILP (p->next)) |
7ab12479 JB |
1766 | XWINDOW (p->next)->prev = new; |
1767 | p->prev = window; | |
1768 | o->next = new; | |
1769 | p->parent = o->parent; | |
1770 | p->buffer = Qt; | |
1771 | ||
1772 | Fset_window_buffer (new, o->buffer); | |
1773 | ||
44fa5b1e | 1774 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 1775 | |
265a9e55 | 1776 | if (!NILP (horflag)) |
7ab12479 JB |
1777 | { |
1778 | p->height = o->height; | |
1779 | p->top = o->top; | |
1780 | XFASTINT (p->width) = XFASTINT (o->width) - size; | |
1781 | XFASTINT (o->width) = size; | |
1782 | XFASTINT (p->left) = XFASTINT (o->left) + size; | |
1783 | } | |
1784 | else | |
1785 | { | |
1786 | p->left = o->left; | |
1787 | p->width = o->width; | |
1788 | XFASTINT (p->height) = XFASTINT (o->height) - size; | |
1789 | XFASTINT (o->height) = size; | |
1790 | XFASTINT (p->top) = XFASTINT (o->top) + size; | |
1791 | } | |
1792 | ||
1793 | return new; | |
1794 | } | |
1795 | \f | |
1796 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
1797 | "Make current window ARG lines bigger.\n\ | |
1798 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
1799 | (n, side) | |
1800 | register Lisp_Object n, side; | |
1801 | { | |
1802 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1803 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
1804 | return Qnil; |
1805 | } | |
1806 | ||
1807 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
1808 | "Make current window ARG lines smaller.\n\ | |
1809 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
1810 | (n, side) | |
1811 | register Lisp_Object n, side; | |
1812 | { | |
1813 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1814 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
1815 | return Qnil; |
1816 | } | |
1817 | ||
1818 | int | |
1819 | window_height (window) | |
1820 | Lisp_Object window; | |
1821 | { | |
1822 | register struct window *p = XWINDOW (window); | |
1823 | return XFASTINT (p->height); | |
1824 | } | |
1825 | ||
1826 | int | |
1827 | window_width (window) | |
1828 | Lisp_Object window; | |
1829 | { | |
1830 | register struct window *p = XWINDOW (window); | |
1831 | return XFASTINT (p->width); | |
1832 | } | |
1833 | ||
1834 | #define MINSIZE(w) \ | |
1835 | (widthflag ? window_min_width : window_min_height) | |
1836 | ||
1837 | #define CURBEG(w) \ | |
1838 | *(widthflag ? (int *) &(w)->left : (int *) &(w)->top) | |
1839 | ||
1840 | #define CURSIZE(w) \ | |
1841 | *(widthflag ? (int *) &(w)->width : (int *) &(w)->height) | |
1842 | ||
1843 | /* Unlike set_window_height, this function | |
1844 | also changes the heights of the siblings so as to | |
1845 | keep everything consistent. */ | |
1846 | ||
1847 | change_window_height (delta, widthflag) | |
1848 | register int delta; | |
1849 | int widthflag; | |
1850 | { | |
1851 | register Lisp_Object parent; | |
1852 | Lisp_Object window; | |
1853 | register struct window *p; | |
1854 | int *sizep; | |
1855 | int (*sizefun) () = widthflag ? window_width : window_height; | |
1856 | register int (*setsizefun) () = (widthflag | |
1857 | ? set_window_width | |
1858 | : set_window_height); | |
1859 | ||
a481b3ea | 1860 | check_min_window_sizes (); |
7ab12479 JB |
1861 | |
1862 | window = selected_window; | |
1863 | while (1) | |
1864 | { | |
1865 | p = XWINDOW (window); | |
1866 | parent = p->parent; | |
265a9e55 | 1867 | if (NILP (parent)) |
7ab12479 JB |
1868 | { |
1869 | if (widthflag) | |
1870 | error ("No other window to side of this one"); | |
1871 | break; | |
1872 | } | |
265a9e55 JB |
1873 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
1874 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
1875 | break; |
1876 | window = parent; | |
1877 | } | |
1878 | ||
1879 | sizep = &CURSIZE (p); | |
1880 | ||
1881 | if (*sizep + delta < MINSIZE (p) | |
265a9e55 | 1882 | && !NILP (XWINDOW (window)->parent)) |
7ab12479 JB |
1883 | { |
1884 | Fdelete_window (window); | |
1885 | return; | |
1886 | } | |
1887 | ||
1888 | { | |
1889 | register int maxdelta; | |
7ab12479 | 1890 | |
265a9e55 JB |
1891 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
1892 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
1893 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
1894 | /* This is a frame with only one window, a minibuffer-only |
1895 | or a minibufferless frame. */ | |
d5783c40 | 1896 | : (delta = 0)); |
7ab12479 JB |
1897 | |
1898 | if (delta > maxdelta) | |
1899 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
1900 | the full frame, or make the only window aside from the |
1901 | minibuffer the full frame. */ | |
7ab12479 | 1902 | delta = maxdelta; |
d5783c40 JB |
1903 | |
1904 | if (delta == 0) | |
1905 | return; | |
7ab12479 JB |
1906 | } |
1907 | ||
265a9e55 | 1908 | if (!NILP (p->next) && |
7ab12479 JB |
1909 | (*sizefun) (p->next) - delta >= MINSIZE (p->next)) |
1910 | { | |
1911 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
1912 | (*setsizefun) (window, *sizep + delta, 0); | |
1913 | CURBEG (XWINDOW (p->next)) += delta; | |
1914 | /* This does not change size of p->next, | |
1915 | but it propagates the new top edge to its children */ | |
1916 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
1917 | } | |
265a9e55 | 1918 | else if (!NILP (p->prev) && |
7ab12479 JB |
1919 | (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) |
1920 | { | |
1921 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
1922 | CURBEG (p) -= delta; | |
1923 | (*setsizefun) (window, *sizep + delta, 0); | |
1924 | } | |
1925 | else | |
1926 | { | |
1927 | register int delta1; | |
1928 | register int opht = (*sizefun) (parent); | |
1929 | ||
1930 | /* If trying to grow this window to or beyond size of the parent, | |
1931 | make delta1 so big that, on shrinking back down, | |
1932 | all the siblings end up with less than one line and are deleted. */ | |
1933 | if (opht <= *sizep + delta) | |
1934 | delta1 = opht * opht * 2; | |
1935 | /* Otherwise, make delta1 just right so that if we add delta1 | |
1936 | lines to this window and to the parent, and then shrink | |
1937 | the parent back to its original size, the new proportional | |
1938 | size of this window will increase by delta. */ | |
1939 | else | |
1940 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
1941 | ||
1942 | /* Add delta1 lines or columns to this window, and to the parent, | |
1943 | keeping things consistent while not affecting siblings. */ | |
1944 | CURSIZE (XWINDOW (parent)) = opht + delta1; | |
1945 | (*setsizefun) (window, *sizep + delta1, 0); | |
1946 | ||
1947 | /* Squeeze out delta1 lines or columns from our parent, | |
1948 | shriking this window and siblings proportionately. | |
1949 | This brings parent back to correct size. | |
1950 | Delta1 was calculated so this makes this window the desired size, | |
1951 | taking it all out of the siblings. */ | |
1952 | (*setsizefun) (parent, opht, 0); | |
1953 | } | |
1954 | ||
1955 | XFASTINT (p->last_modified) = 0; | |
1956 | } | |
1957 | #undef MINSIZE | |
1958 | #undef CURBEG | |
1959 | #undef CURSIZE | |
1960 | ||
1961 | \f | |
1962 | /* Return number of lines of text (not counting mode line) in W. */ | |
1963 | ||
1964 | int | |
1965 | window_internal_height (w) | |
1966 | struct window *w; | |
1967 | { | |
1968 | int ht = XFASTINT (w->height); | |
1969 | ||
1970 | if (MINI_WINDOW_P (w)) | |
1971 | return ht; | |
1972 | ||
265a9e55 JB |
1973 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
1974 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 1975 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
1976 | return ht - 1; |
1977 | ||
1978 | return ht; | |
1979 | } | |
1980 | ||
1981 | /* Scroll contents of window WINDOW up N lines. */ | |
1982 | ||
1983 | void | |
f8026fd8 | 1984 | window_scroll (window, n, noerror) |
7ab12479 JB |
1985 | Lisp_Object window; |
1986 | int n; | |
f8026fd8 | 1987 | int noerror; |
7ab12479 JB |
1988 | { |
1989 | register struct window *w = XWINDOW (window); | |
1990 | register int opoint = point; | |
1991 | register int pos; | |
1992 | register int ht = window_internal_height (w); | |
1993 | register Lisp_Object tem; | |
1994 | int lose; | |
1995 | Lisp_Object bolp, nmoved; | |
1996 | ||
1997 | XFASTINT (tem) = point; | |
1998 | tem = Fpos_visible_in_window_p (tem, window); | |
1999 | ||
265a9e55 | 2000 | if (NILP (tem)) |
7ab12479 JB |
2001 | { |
2002 | Fvertical_motion (make_number (- ht / 2)); | |
2003 | XFASTINT (tem) = point; | |
2004 | Fset_marker (w->start, tem, w->buffer); | |
2005 | w->force_start = Qt; | |
2006 | } | |
2007 | ||
2008 | SET_PT (marker_position (w->start)); | |
2009 | lose = n < 0 && point == BEGV; | |
2010 | Fvertical_motion (make_number (n)); | |
2011 | pos = point; | |
2012 | bolp = Fbolp (); | |
2013 | SET_PT (opoint); | |
2014 | ||
2015 | if (lose) | |
f8026fd8 JB |
2016 | { |
2017 | if (noerror) | |
2018 | return; | |
2019 | else | |
2020 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2021 | } | |
7ab12479 JB |
2022 | |
2023 | if (pos < ZV) | |
7ab12479 JB |
2024 | { |
2025 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2026 | w->start_at_line_beg = bolp; | |
2027 | w->update_mode_line = Qt; | |
2028 | XFASTINT (w->last_modified) = 0; | |
2029 | if (pos > opoint) | |
2030 | SET_PT (pos); | |
2031 | if (n < 0) | |
2032 | { | |
2033 | SET_PT (pos); | |
2034 | tem = Fvertical_motion (make_number (ht)); | |
2035 | if (point > opoint || XFASTINT (tem) < ht) | |
2036 | SET_PT (opoint); | |
2037 | else | |
2038 | Fvertical_motion (make_number (-1)); | |
2039 | } | |
2040 | } | |
2041 | else | |
f8026fd8 JB |
2042 | { |
2043 | if (noerror) | |
2044 | return; | |
2045 | else | |
2046 | Fsignal (Qend_of_buffer, Qnil); | |
2047 | } | |
7ab12479 JB |
2048 | } |
2049 | \f | |
2050 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2051 | ||
2052 | static void | |
2053 | scroll_command (n, direction) | |
2054 | register Lisp_Object n; | |
2055 | int direction; | |
2056 | { | |
2057 | register int defalt; | |
2058 | int count = specpdl_ptr - specpdl; | |
2059 | ||
95605e15 JB |
2060 | /* If selected window's buffer isn't current, make it current for the moment. |
2061 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2062 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2063 | { |
2064 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2065 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2066 | } | |
7ab12479 JB |
2067 | |
2068 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2069 | - next_screen_context_lines); | |
2070 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2071 | ||
265a9e55 | 2072 | if (NILP (n)) |
f8026fd8 | 2073 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2074 | else if (EQ (n, Qminus)) |
f8026fd8 | 2075 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2076 | else |
2077 | { | |
2078 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2079 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2080 | } |
95605e15 JB |
2081 | |
2082 | unbind_to (count, Qnil); | |
7ab12479 JB |
2083 | } |
2084 | ||
2085 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2086 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2087 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2088 | When calling from a program, supply a number as argument or nil.") | |
2089 | (n) | |
2090 | Lisp_Object n; | |
2091 | { | |
2092 | scroll_command (n, 1); | |
2093 | return Qnil; | |
2094 | } | |
2095 | ||
2096 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2097 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2098 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2099 | When calling from a program, supply a number as argument or nil.") | |
2100 | (n) | |
2101 | Lisp_Object n; | |
2102 | { | |
2103 | scroll_command (n, -1); | |
2104 | return Qnil; | |
2105 | } | |
2106 | ||
2107 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2108 | "Scroll text of next window upward ARG lines; or near full screen if no ARG.\n\ | |
2109 | The next window is the one below the current one; or the one at the top\n\ | |
2110 | if the current one is at the bottom.\n\ | |
2111 | When calling from a program, supply a number as argument or nil.\n\ | |
2112 | \n\ | |
2113 | If in the minibuffer, `minibuf-scroll-window' if non-nil\n\ | |
2114 | specifies the window to scroll.\n\ | |
2115 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2116 | showing that buffer, popping the buffer up if necessary.") | |
2117 | (n) | |
2118 | register Lisp_Object n; | |
2119 | { | |
2120 | register Lisp_Object window; | |
2121 | register int ht; | |
2122 | register struct window *w; | |
2123 | register int count = specpdl_ptr - specpdl; | |
2124 | ||
2125 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2126 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2127 | window = Vminibuf_scroll_window; |
2128 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2129 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2130 | { |
2131 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2132 | if (NILP (window)) |
7ab12479 JB |
2133 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2134 | } | |
2135 | else | |
2136 | /* Nothing specified; pick a neighboring window. */ | |
2137 | window = Fnext_window (selected_window, Qnil, Qt); | |
2138 | CHECK_WINDOW (window, 0); | |
2139 | ||
2140 | if (EQ (window, selected_window)) | |
2141 | error ("There is no other window"); | |
2142 | ||
2143 | w = XWINDOW (window); | |
2144 | ht = window_internal_height (w); | |
2145 | ||
2146 | /* Don't screw up if window_scroll gets an error. */ | |
2147 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2148 | ||
2149 | Fset_buffer (w->buffer); | |
2150 | SET_PT (marker_position (w->pointm)); | |
2151 | ||
265a9e55 | 2152 | if (NILP (n)) |
f8026fd8 | 2153 | window_scroll (window, ht - next_screen_context_lines, 1); |
7ab12479 | 2154 | else if (EQ (n, Qminus)) |
f8026fd8 | 2155 | window_scroll (window, next_screen_context_lines - ht, 1); |
7ab12479 JB |
2156 | else |
2157 | { | |
2158 | if (XTYPE (n) == Lisp_Cons) | |
2159 | n = Fcar (n); | |
2160 | CHECK_NUMBER (n, 0); | |
f8026fd8 | 2161 | window_scroll (window, XINT (n), 1); |
7ab12479 JB |
2162 | } |
2163 | ||
2164 | Fset_marker (w->pointm, make_number (point), Qnil); | |
2165 | unbind_to (count); | |
2166 | ||
2167 | return Qnil; | |
2168 | } | |
2169 | \f | |
2170 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 1, 1, "P", | |
2171 | "Scroll selected window display ARG columns left.\n\ | |
2172 | Default for ARG is window width minus 2.") | |
2173 | (arg) | |
2174 | register Lisp_Object arg; | |
2175 | { | |
2176 | ||
265a9e55 | 2177 | if (NILP (arg)) |
7ab12479 JB |
2178 | XFASTINT (arg) = XFASTINT (XWINDOW (selected_window)->width) - 2; |
2179 | else | |
2180 | arg = Fprefix_numeric_value (arg); | |
2181 | ||
2182 | return | |
2183 | Fset_window_hscroll (selected_window, | |
2184 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2185 | + XINT (arg))); | |
2186 | } | |
2187 | ||
2188 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 1, 1, "P", | |
2189 | "Scroll selected window display ARG columns right.\n\ | |
2190 | Default for ARG is window width minus 2.") | |
2191 | (arg) | |
2192 | register Lisp_Object arg; | |
2193 | { | |
265a9e55 | 2194 | if (NILP (arg)) |
7ab12479 JB |
2195 | XFASTINT (arg) = XFASTINT (XWINDOW (selected_window)->width) - 2; |
2196 | else | |
2197 | arg = Fprefix_numeric_value (arg); | |
2198 | ||
2199 | return | |
2200 | Fset_window_hscroll (selected_window, | |
2201 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2202 | - XINT (arg))); | |
2203 | } | |
2204 | ||
2205 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2206 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2207 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e JB |
2208 | Just C-u as prefix means put point in the center of the window.\n\ |
2209 | No arg (i.e., it is nil) erases the entire frame and then\n\ | |
2210 | redraws with point in the center of the current window.") | |
7ab12479 JB |
2211 | (n) |
2212 | register Lisp_Object n; | |
2213 | { | |
2214 | register struct window *w = XWINDOW (selected_window); | |
2215 | register int ht = window_internal_height (w); | |
2216 | register int opoint = point; | |
2217 | ||
265a9e55 | 2218 | if (NILP (n)) |
7ab12479 | 2219 | { |
44fa5b1e | 2220 | extern int frame_garbaged; |
7ab12479 | 2221 | |
44fa5b1e | 2222 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
7ab12479 JB |
2223 | XFASTINT (n) = ht / 2; |
2224 | } | |
2225 | else if (XTYPE (n) == Lisp_Cons) /* Just C-u. */ | |
2226 | { | |
2227 | XFASTINT (n) = ht / 2; | |
2228 | } | |
2229 | else | |
2230 | { | |
2231 | n = Fprefix_numeric_value (n); | |
2232 | CHECK_NUMBER (n, 0); | |
2233 | } | |
2234 | ||
2235 | if (XINT (n) < 0) | |
2236 | XSETINT (n, XINT (n) + ht); | |
2237 | ||
2238 | XSETINT (n, - XINT (n)); | |
2239 | ||
2240 | Fvertical_motion (n); | |
2241 | Fset_marker (w->start, make_number (point), w->buffer); | |
2242 | w->start_at_line_beg = Fbolp (); | |
2243 | ||
2244 | SET_PT (opoint); | |
2245 | w->force_start = Qt; | |
2246 | ||
2247 | return Qnil; | |
2248 | } | |
2249 | \f | |
2250 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2251 | 1, 1, "P", | |
2252 | "Position point relative to window.\n\ | |
2253 | With no argument, position text at center of window.\n\ | |
44fa5b1e | 2254 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2255 | negative means relative to bottom of window.") |
2256 | (arg) | |
2257 | register Lisp_Object arg; | |
2258 | { | |
2259 | register struct window *w = XWINDOW (selected_window); | |
2260 | register int height = window_internal_height (w); | |
2261 | register int start; | |
2262 | ||
265a9e55 | 2263 | if (NILP (arg)) |
7ab12479 JB |
2264 | XFASTINT (arg) = height / 2; |
2265 | else | |
2266 | { | |
2267 | arg = Fprefix_numeric_value (arg); | |
2268 | if (XINT (arg) < 0) | |
2269 | XSETINT (arg, XINT (arg) + height); | |
2270 | } | |
2271 | ||
2272 | start = marker_position (w->start); | |
2273 | if (start < BEGV || start > ZV) | |
2274 | { | |
2275 | Fvertical_motion (make_number (- height / 2)); | |
2276 | Fset_marker (w->start, make_number (point), w->buffer); | |
2277 | w->start_at_line_beg = Fbolp (); | |
2278 | w->force_start = Qt; | |
2279 | } | |
2280 | else | |
2281 | SET_PT (start); | |
2282 | ||
2283 | return Fvertical_motion (arg); | |
2284 | } | |
2285 | \f | |
2286 | struct save_window_data | |
2287 | { | |
2288 | int size_from_Lisp_Vector_struct; | |
2289 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
44fa5b1e | 2290 | Lisp_Object frame_width, frame_height; |
7ab12479 JB |
2291 | Lisp_Object current_window; |
2292 | Lisp_Object current_buffer; | |
2293 | Lisp_Object minibuf_scroll_window; | |
2294 | Lisp_Object root_window; | |
2295 | /* A vector, interpreted as a struct saved_window */ | |
2296 | Lisp_Object saved_windows; | |
2297 | }; | |
2298 | #define SAVE_WINDOW_DATA_SIZE 7 /* Arg to Fmake_vector */ | |
2299 | ||
2300 | /* This is saved as a Lisp_Vector */ | |
2301 | struct saved_window | |
2302 | { | |
2303 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2304 | int size_from_Lisp_Vector_struct; | |
2305 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2306 | ||
2307 | Lisp_Object window; | |
2308 | Lisp_Object buffer, start, pointm, mark; | |
2309 | Lisp_Object left, top, width, height, hscroll; | |
2310 | Lisp_Object parent, prev; | |
2311 | Lisp_Object start_at_line_beg; | |
2312 | Lisp_Object display_table; | |
2313 | }; | |
2314 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2315 | ||
2316 | #define SAVED_WINDOW_N(swv,n) \ | |
2317 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2318 | ||
2319 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2320 | "T if OBJECT is a window-configration object.") | |
2321 | (obj) | |
2322 | Lisp_Object obj; | |
2323 | { | |
2324 | if (XTYPE (obj) == Lisp_Window_Configuration) | |
2325 | return Qt; | |
2326 | return Qnil; | |
2327 | } | |
2328 | ||
2329 | ||
2330 | DEFUN ("set-window-configuration", | |
2331 | Fset_window_configuration, Sset_window_configuration, | |
2332 | 1, 1, 0, | |
2333 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ | |
2334 | CONFIGURATION must be a value previously returned\n\ | |
2335 | by `current-window-configuration' (which see).") | |
2336 | (arg) | |
2337 | Lisp_Object arg; | |
2338 | { | |
2339 | register struct window *w; | |
2340 | register struct save_window_data *data; | |
2341 | struct Lisp_Vector *saved_windows; | |
2342 | register struct saved_window *p; | |
2343 | register Lisp_Object tem; | |
2344 | Lisp_Object new_current_buffer; | |
2345 | int k; | |
44fa5b1e | 2346 | FRAME_PTR f; |
7ab12479 JB |
2347 | |
2348 | while (XTYPE (arg) != Lisp_Window_Configuration) | |
2349 | { | |
2350 | arg = wrong_type_argument (intern ("window-configuration-p"), arg); | |
2351 | } | |
2352 | ||
2353 | data = (struct save_window_data *) XVECTOR (arg); | |
2354 | saved_windows = XVECTOR (data->saved_windows); | |
2355 | ||
44fa5b1e | 2356 | f = XFRAME (XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame); |
7ab12479 | 2357 | |
44fa5b1e JB |
2358 | if (XFASTINT (data->frame_height) != FRAME_HEIGHT (f) |
2359 | || XFASTINT (data->frame_width) != FRAME_WIDTH (f)) | |
7ab12479 JB |
2360 | { |
2361 | /* Presumably something clever could be done. | |
2362 | However, it doesn't seem worth the effort */ | |
44fa5b1e JB |
2363 | error ("Frame size %dx%d in saved window configuration mismatches frame.", |
2364 | XFASTINT (data->frame_height), | |
2365 | XFASTINT (data->frame_width)); | |
7ab12479 JB |
2366 | } |
2367 | ||
2368 | windows_or_buffers_changed++; | |
2369 | new_current_buffer = data->current_buffer; | |
265a9e55 | 2370 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2371 | new_current_buffer = Qnil; |
2372 | ||
44fa5b1e | 2373 | /* Mark all windows now on frame as "deleted". |
7ab12479 JB |
2374 | Restoring the new configuration "undeletes" any that are in it. */ |
2375 | ||
44fa5b1e | 2376 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
7ab12479 | 2377 | #if 0 |
44fa5b1e | 2378 | /* This loses when the minibuf frame is not f. */ |
7ab12479 JB |
2379 | delete_all_subwindows (XWINDOW (XWINDOW (minibuf_window)->prev)); |
2380 | #endif | |
2381 | ||
2382 | for (k = 0; k < saved_windows->size; k++) | |
2383 | { | |
2384 | p = SAVED_WINDOW_N (saved_windows, k); | |
2385 | w = XWINDOW (p->window); | |
2386 | w->next = Qnil; | |
2387 | ||
265a9e55 | 2388 | if (!NILP (p->parent)) |
7ab12479 JB |
2389 | w->parent = SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window; |
2390 | else | |
2391 | w->parent = Qnil; | |
2392 | ||
265a9e55 | 2393 | if (!NILP (p->prev)) |
7ab12479 JB |
2394 | { |
2395 | w->prev = SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window; | |
44fa5b1e JB |
2396 | #ifdef MULTI_FRAME |
2397 | /* This is true for a minibuffer-only frame. */ | |
7ab12479 JB |
2398 | if (w->mini_p && EQ (w->prev, p->window)) |
2399 | w->next = Qnil; | |
2400 | else | |
44fa5b1e | 2401 | #endif /* MULTI_FRAME */ |
7ab12479 JB |
2402 | XWINDOW (w->prev)->next = p->window; |
2403 | } | |
2404 | else | |
2405 | { | |
2406 | w->prev = Qnil; | |
265a9e55 | 2407 | if (!NILP (w->parent)) |
7ab12479 JB |
2408 | { |
2409 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
2410 | { | |
2411 | XWINDOW (w->parent)->vchild = p->window; | |
2412 | XWINDOW (w->parent)->hchild = Qnil; | |
2413 | } | |
2414 | else | |
2415 | { | |
2416 | XWINDOW (w->parent)->hchild = p->window; | |
2417 | XWINDOW (w->parent)->vchild = Qnil; | |
2418 | } | |
2419 | } | |
2420 | } | |
2421 | w->left = p->left; | |
2422 | w->top = p->top; | |
2423 | w->width = p->width; | |
2424 | w->height = p->height; | |
2425 | w->hscroll = p->hscroll; | |
2426 | w->display_table = p->display_table; | |
2427 | XFASTINT (w->last_modified) = 0; | |
2428 | ||
2429 | /* Reinstall the saved buffer and pointers into it. */ | |
265a9e55 | 2430 | if (NILP (p->buffer)) |
7ab12479 JB |
2431 | w->buffer = p->buffer; |
2432 | else | |
2433 | { | |
265a9e55 | 2434 | if (!NILP (XBUFFER (p->buffer)->name)) |
7ab12479 JB |
2435 | /* If saved buffer is alive, install it. */ |
2436 | { | |
2437 | w->buffer = p->buffer; | |
2438 | w->start_at_line_beg = p->start_at_line_beg; | |
2439 | set_marker_restricted (w->start, Fmarker_position (p->start), w->buffer); | |
2440 | set_marker_restricted (w->pointm, Fmarker_position (p->pointm), w->buffer); | |
2441 | Fset_marker (XBUFFER (w->buffer)->mark, | |
2442 | Fmarker_position (p->mark), w->buffer); | |
2443 | ||
2444 | if (!EQ (p->buffer, new_current_buffer) && | |
2445 | XBUFFER (p->buffer) == current_buffer) | |
2446 | Fgoto_char (w->pointm); | |
2447 | } | |
265a9e55 | 2448 | else if (NILP (XBUFFER (w->buffer)->name)) |
7ab12479 JB |
2449 | /* Else if window's old buffer is dead too, get a live one. */ |
2450 | { | |
2451 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); | |
2452 | /* This will set the markers to beginning of visible range. */ | |
2453 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2454 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
2455 | w->start_at_line_beg = Qt; | |
2456 | } | |
2457 | else | |
2458 | /* Keeping window's old buffer; make sure the markers are real. */ | |
2459 | /* Else if window's old buffer is dead too, get a live one. */ | |
2460 | { | |
2461 | /* Set window markers at start of visible range. */ | |
2462 | if (XMARKER (w->start)->buffer == 0) | |
2463 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2464 | if (XMARKER (w->pointm)->buffer == 0) | |
2465 | set_marker_restricted (w->pointm, | |
2466 | make_number (BUF_PT (XBUFFER (w->buffer))), | |
2467 | w->buffer); | |
2468 | w->start_at_line_beg = Qt; | |
2469 | } | |
2470 | } | |
2471 | } | |
2472 | ||
44fa5b1e | 2473 | FRAME_ROOT_WINDOW (f) = data->root_window; |
7ab12479 | 2474 | |
44fa5b1e | 2475 | #ifdef MULTI_FRAME |
a481b3ea | 2476 | if (f != selected_frame && ! FRAME_TERMCAP_P (f)) |
44fa5b1e | 2477 | Fselect_frame (WINDOW_FRAME (XWINDOW (data->root_window)), Qnil); |
7ab12479 JB |
2478 | #endif |
2479 | ||
44fa5b1e | 2480 | if (f == selected_frame) |
7ab12479 JB |
2481 | { |
2482 | Fselect_window (data->current_window); | |
265a9e55 | 2483 | if (!NILP (new_current_buffer)) |
7ab12479 JB |
2484 | Fset_buffer (new_current_buffer); |
2485 | else | |
2486 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2487 | } | |
2488 | ||
2489 | Vminibuf_scroll_window = data->minibuf_scroll_window; | |
2490 | return (Qnil); | |
2491 | } | |
2492 | ||
44fa5b1e | 2493 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
2494 | by setting their buffers to nil. */ |
2495 | ||
2496 | static void | |
2497 | delete_all_subwindows (w) | |
2498 | register struct window *w; | |
2499 | { | |
2500 | register int count = 1; | |
2501 | w->buffer = Qnil; | |
265a9e55 | 2502 | if (!NILP (w->next)) |
7ab12479 | 2503 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 2504 | if (!NILP (w->vchild)) |
7ab12479 | 2505 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 2506 | if (!NILP (w->hchild)) |
7ab12479 JB |
2507 | delete_all_subwindows (XWINDOW (w->hchild)); |
2508 | } | |
2509 | \f | |
2510 | static int | |
2511 | count_windows (window) | |
2512 | register struct window *window; | |
2513 | { | |
2514 | register int count = 1; | |
265a9e55 | 2515 | if (!NILP (window->next)) |
7ab12479 | 2516 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 2517 | if (!NILP (window->vchild)) |
7ab12479 | 2518 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 2519 | if (!NILP (window->hchild)) |
7ab12479 JB |
2520 | count += count_windows (XWINDOW (window->hchild)); |
2521 | return count; | |
2522 | } | |
2523 | ||
2524 | static int | |
2525 | save_window_save (window, vector, i) | |
2526 | Lisp_Object window; | |
2527 | struct Lisp_Vector *vector; | |
2528 | int i; | |
2529 | { | |
2530 | register struct saved_window *p; | |
2531 | register struct window *w; | |
2532 | register Lisp_Object tem; | |
2533 | ||
265a9e55 | 2534 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
2535 | { |
2536 | p = SAVED_WINDOW_N (vector, i); | |
2537 | w = XWINDOW (window); | |
2538 | ||
2539 | XFASTINT (w->temslot) = i++; | |
2540 | p->window = window; | |
2541 | p->buffer = w->buffer; | |
2542 | p->left = w->left; | |
2543 | p->top = w->top; | |
2544 | p->width = w->width; | |
2545 | p->height = w->height; | |
2546 | p->hscroll = w->hscroll; | |
2547 | p->display_table = w->display_table; | |
265a9e55 | 2548 | if (!NILP (w->buffer)) |
7ab12479 JB |
2549 | { |
2550 | /* Save w's value of point in the window configuration. | |
2551 | If w is the selected window, then get the value of point | |
2552 | from the buffer; pointm is garbage in the selected window. */ | |
2553 | if (EQ (window, selected_window)) | |
2554 | { | |
2555 | p->pointm = Fmake_marker (); | |
2556 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
2557 | w->buffer); | |
2558 | } | |
2559 | else | |
2560 | p->pointm = Fcopy_marker (w->pointm); | |
2561 | ||
2562 | p->start = Fcopy_marker (w->start); | |
2563 | p->start_at_line_beg = w->start_at_line_beg; | |
2564 | ||
2565 | tem = XBUFFER (w->buffer)->mark; | |
2566 | p->mark = Fcopy_marker (tem); | |
2567 | } | |
2568 | else | |
2569 | { | |
2570 | p->pointm = Qnil; | |
2571 | p->start = Qnil; | |
2572 | p->mark = Qnil; | |
2573 | p->start_at_line_beg = Qnil; | |
2574 | } | |
2575 | ||
265a9e55 | 2576 | if (NILP (w->parent)) |
7ab12479 JB |
2577 | p->parent = Qnil; |
2578 | else | |
2579 | p->parent = XWINDOW (w->parent)->temslot; | |
2580 | ||
265a9e55 | 2581 | if (NILP (w->prev)) |
7ab12479 JB |
2582 | p->prev = Qnil; |
2583 | else | |
2584 | p->prev = XWINDOW (w->prev)->temslot; | |
2585 | ||
265a9e55 | 2586 | if (!NILP (w->vchild)) |
7ab12479 | 2587 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 2588 | if (!NILP (w->hchild)) |
7ab12479 JB |
2589 | i = save_window_save (w->hchild, vector, i); |
2590 | } | |
2591 | ||
2592 | return i; | |
2593 | } | |
2594 | ||
2595 | DEFUN ("current-window-configuration", | |
43bad991 | 2596 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
2597 | "Return an object representing the current window configuration of FRAME.\n\ |
2598 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
2599 | This describes the number of windows, their sizes and current buffers,\n\ |
2600 | and for each displayed buffer, where display starts, and the positions of\n\ | |
2601 | point and mark. An exception is made for point in the current buffer:\n\ | |
2602 | its value is -not- saved.") | |
44fa5b1e JB |
2603 | (frame) |
2604 | Lisp_Object frame; | |
7ab12479 JB |
2605 | { |
2606 | register Lisp_Object tem; | |
2607 | register int n_windows; | |
2608 | register struct save_window_data *data; | |
2609 | register int i; | |
44fa5b1e | 2610 | FRAME_PTR f; |
43bad991 | 2611 | |
44fa5b1e JB |
2612 | if (NILP (frame)) |
2613 | f = selected_frame; | |
43bad991 JB |
2614 | else |
2615 | { | |
44fa5b1e JB |
2616 | CHECK_LIVE_FRAME (frame, 0); |
2617 | f = XFRAME (frame); | |
43bad991 | 2618 | } |
7ab12479 | 2619 | |
44fa5b1e | 2620 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
7ab12479 JB |
2621 | data = (struct save_window_data *) |
2622 | XVECTOR (Fmake_vector (make_number (SAVE_WINDOW_DATA_SIZE), | |
2623 | Qnil)); | |
44fa5b1e JB |
2624 | XFASTINT (data->frame_width) = FRAME_WIDTH (f); |
2625 | XFASTINT (data->frame_height) = FRAME_HEIGHT (f); | |
2626 | data->current_window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 JB |
2627 | XSET (data->current_buffer, Lisp_Buffer, current_buffer); |
2628 | data->minibuf_scroll_window = Vminibuf_scroll_window; | |
44fa5b1e | 2629 | data->root_window = FRAME_ROOT_WINDOW (f); |
7ab12479 JB |
2630 | tem = Fmake_vector (make_number (n_windows), Qnil); |
2631 | data->saved_windows = tem; | |
2632 | for (i = 0; i < n_windows; i++) | |
2633 | XVECTOR (tem)->contents[i] | |
2634 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 2635 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 JB |
2636 | XVECTOR (tem), 0); |
2637 | XSET (tem, Lisp_Window_Configuration, data); | |
2638 | return (tem); | |
2639 | } | |
2640 | ||
2641 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
2642 | 0, UNEVALLED, 0, | |
2643 | "Execute body, preserving window sizes and contents.\n\ | |
2644 | Restores which buffer appears in which window, where display starts,\n\ | |
2645 | as well as the current buffer.\n\ | |
2646 | Does not restore the value of point in current buffer.") | |
2647 | (args) | |
2648 | Lisp_Object args; | |
2649 | { | |
2650 | register Lisp_Object val; | |
2651 | register int count = specpdl_ptr - specpdl; | |
2652 | ||
2653 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 2654 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
2655 | val = Fprogn (args); |
2656 | return unbind_to (count, val); | |
2657 | } | |
2658 | \f | |
2659 | init_window_once () | |
2660 | { | |
44fa5b1e JB |
2661 | #ifdef MULTI_FRAME |
2662 | selected_frame = make_terminal_frame (); | |
2663 | minibuf_window = selected_frame->minibuffer_window; | |
2664 | selected_window = selected_frame->selected_window; | |
2665 | last_nonminibuf_frame = selected_frame; | |
2666 | #else /* not MULTI_FRAME */ | |
7ab12479 JB |
2667 | extern Lisp_Object get_minibuffer (); |
2668 | ||
95605e15 | 2669 | minibuf_window = make_window (); |
4b206065 | 2670 | FRAME_ROOT_WINDOW (selected_frame) = make_window (); |
7ab12479 | 2671 | |
44fa5b1e JB |
2672 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->next = minibuf_window; |
2673 | XWINDOW (minibuf_window)->prev = FRAME_ROOT_WINDOW (selected_frame); | |
4b206065 | 2674 | XWINDOW (minibuf_window)->mini_p = Qt; |
7ab12479 JB |
2675 | |
2676 | /* These values 9 and 10 are arbitrary, | |
2677 | just so that there is "something there." | |
2678 | Correct values are put in in init_xdisp */ | |
2679 | ||
44fa5b1e | 2680 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->width) = 10; |
7ab12479 JB |
2681 | XFASTINT (XWINDOW (minibuf_window)->width) = 10; |
2682 | ||
44fa5b1e | 2683 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->height) = 9; |
7ab12479 JB |
2684 | XFASTINT (XWINDOW (minibuf_window)->top) = 9; |
2685 | XFASTINT (XWINDOW (minibuf_window)->height) = 1; | |
2686 | ||
2687 | /* Prevent error in Fset_window_buffer. */ | |
44fa5b1e | 2688 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->buffer = Qt; |
7ab12479 JB |
2689 | XWINDOW (minibuf_window)->buffer = Qt; |
2690 | ||
2691 | /* Now set them up for real. */ | |
44fa5b1e | 2692 | Fset_window_buffer (FRAME_ROOT_WINDOW (selected_frame), |
e5d77022 | 2693 | Fcurrent_buffer ()); |
7ab12479 JB |
2694 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); |
2695 | ||
44fa5b1e | 2696 | selected_window = FRAME_ROOT_WINDOW (selected_frame); |
1d8d96fa JB |
2697 | /* Make sure this window seems more recently used than |
2698 | a newly-created, never-selected window. Increment | |
2699 | window_select_count so the first selection ever will get | |
2700 | something newer than this. */ | |
2701 | XFASTINT (XWINDOW (selected_window)->use_time) = ++window_select_count; | |
44fa5b1e | 2702 | #endif /* not MULTI_FRAME */ |
7ab12479 JB |
2703 | } |
2704 | ||
2705 | syms_of_window () | |
2706 | { | |
2707 | Qwindowp = intern ("windowp"); | |
2708 | staticpro (&Qwindowp); | |
2709 | ||
2710 | /* Make sure all windows get marked */ | |
2711 | staticpro (&minibuf_window); | |
2712 | ||
2713 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
2714 | "Non-nil means call as function to display a help buffer.\n\ | |
2715 | Used by `with-output-to-temp-buffer'."); | |
2716 | Vtemp_buffer_show_function = Qnil; | |
2717 | ||
2718 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
2719 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
2720 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
2721 | that the currently selected window is not acceptable.\n\ | |
2722 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
2723 | work using this function."); | |
2724 | Vdisplay_buffer_function = Qnil; | |
2725 | ||
2726 | DEFVAR_LISP ("mouse-window", &Vmouse_window, | |
2727 | "Window that the last mouse click occurred on."); | |
2728 | Vmouse_window = Qnil; | |
2729 | ||
2730 | DEFVAR_LISP ("mouse-event", &Vmouse_event, | |
2731 | "The last mouse-event object. A list of four elements:\n\ | |
44fa5b1e | 2732 | ((X-POS Y-POS) WINDOW FRAME-PART KEYSEQ).\n\ |
7ab12479 JB |
2733 | KEYSEQ is a string, the key sequence to be looked up in the mouse maps.\n\ |
2734 | WINDOW is the window that the click applies do.\n\ | |
44fa5b1e | 2735 | If FRAME-PART is non-nil, the event was on a scrollbar;\n\ |
7ab12479 JB |
2736 | then Y-POS is really the total length of the scrollbar, while X-POS is\n\ |
2737 | the relative position of the scrollbar's value within that total length.\n\ | |
44fa5b1e | 2738 | FRAME-PART is one of the following symbols:\n\ |
7ab12479 JB |
2739 | `vertical-scrollbar', `vertical-slider',\n\ |
2740 | `vertical-thumbup', `vertical-thumbdown',\n\ | |
2741 | `horizontal-scrollbar', `horizontal-slider',\n\ | |
2742 | `horizontal-thumbleft', `horizontal-thumbright'"); | |
2743 | Vmouse_event = Qnil; | |
2744 | ||
2745 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, | |
2746 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
2747 | Vminibuf_scroll_window = Qnil; | |
2748 | ||
2749 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
2750 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
2751 | Vother_window_scroll_buffer = Qnil; | |
2752 | ||
44fa5b1e JB |
2753 | #ifdef MULTI_FRAME |
2754 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, | |
700f75a4 | 2755 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 2756 | pop_up_frames = 0; |
7ab12479 | 2757 | |
44fa5b1e JB |
2758 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
2759 | "*If non-nil, function to call to handle automatic new frame creation.\n\ | |
2760 | It is called with no arguments and should return a newly created frame.\n\ | |
7ab12479 | 2761 | \n\ |
44fa5b1e JB |
2762 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
2763 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
2764 | Vpop_up_frame_function = Qnil; | |
7ab12479 JB |
2765 | #endif |
2766 | ||
2767 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, | |
2768 | "*Non-nil means display-buffer should make new windows."); | |
2769 | pop_up_windows = 1; | |
2770 | ||
2771 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
2772 | "*Number of lines of continuity when scrolling by screenfuls."); | |
2773 | next_screen_context_lines = 2; | |
2774 | ||
2775 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
2776 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
2777 | If there is only one window, it is split regardless of this value."); | |
2778 | split_height_threshold = 500; | |
2779 | ||
2780 | DEFVAR_INT ("window-min-height", &window_min_height, | |
2781 | "*Delete any window less than this tall (including its mode line)."); | |
2782 | window_min_height = 4; | |
2783 | ||
2784 | DEFVAR_INT ("window-min-width", &window_min_width, | |
2785 | "*Delete any window less than this wide."); | |
2786 | window_min_width = 10; | |
2787 | ||
2788 | defsubr (&Sselected_window); | |
2789 | defsubr (&Sminibuffer_window); | |
2790 | defsubr (&Swindow_minibuffer_p); | |
2791 | defsubr (&Swindowp); | |
2792 | defsubr (&Spos_visible_in_window_p); | |
2793 | defsubr (&Swindow_buffer); | |
2794 | defsubr (&Swindow_height); | |
2795 | defsubr (&Swindow_width); | |
2796 | defsubr (&Swindow_hscroll); | |
2797 | defsubr (&Sset_window_hscroll); | |
2798 | defsubr (&Swindow_edges); | |
d5783c40 JB |
2799 | defsubr (&Scoordinates_in_window_p); |
2800 | defsubr (&Swindow_at); | |
7ab12479 JB |
2801 | defsubr (&Swindow_point); |
2802 | defsubr (&Swindow_start); | |
2803 | defsubr (&Swindow_end); | |
2804 | defsubr (&Sset_window_point); | |
2805 | defsubr (&Sset_window_start); | |
2806 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 2807 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
2808 | defsubr (&Swindow_display_table); |
2809 | defsubr (&Sset_window_display_table); | |
2810 | defsubr (&Snext_window); | |
2811 | defsubr (&Sprevious_window); | |
2812 | defsubr (&Sother_window); | |
2813 | defsubr (&Sget_lru_window); | |
2814 | defsubr (&Sget_largest_window); | |
2815 | defsubr (&Sget_buffer_window); | |
2816 | defsubr (&Sdelete_other_windows); | |
2817 | defsubr (&Sdelete_windows_on); | |
2818 | defsubr (&Sreplace_buffer_in_windows); | |
2819 | defsubr (&Sdelete_window); | |
2820 | defsubr (&Sset_window_buffer); | |
2821 | defsubr (&Sselect_window); | |
2822 | defsubr (&Sdisplay_buffer); | |
2823 | defsubr (&Ssplit_window); | |
2824 | defsubr (&Senlarge_window); | |
2825 | defsubr (&Sshrink_window); | |
2826 | defsubr (&Sscroll_up); | |
2827 | defsubr (&Sscroll_down); | |
2828 | defsubr (&Sscroll_left); | |
2829 | defsubr (&Sscroll_right); | |
2830 | defsubr (&Sscroll_other_window); | |
2831 | defsubr (&Srecenter); | |
2832 | defsubr (&Smove_to_window_line); | |
2833 | defsubr (&Swindow_configuration_p); | |
2834 | defsubr (&Sset_window_configuration); | |
2835 | defsubr (&Scurrent_window_configuration); | |
2836 | defsubr (&Ssave_window_excursion); | |
2837 | } | |
2838 | ||
2839 | keys_of_window () | |
2840 | { | |
2841 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
2842 | initial_define_key (control_x_map, '2', "split-window"); | |
2843 | initial_define_key (control_x_map, '0', "delete-window"); | |
2844 | initial_define_key (control_x_map, 'o', "other-window"); | |
2845 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
2846 | initial_define_key (control_x_map, '<', "scroll-left"); | |
2847 | initial_define_key (control_x_map, '>', "scroll-right"); | |
2848 | ||
2849 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
2850 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
2851 | initial_define_key (meta_map, 'v', "scroll-down"); | |
2852 | ||
2853 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
2854 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
2855 | } |