Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
73b0cd50 | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2011 |
8cabe764 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
4d553a13 | 22 | #include <stdio.h> |
d7306fe6 | 23 | #include <setjmp.h> |
4d553a13 | 24 | |
7ab12479 JB |
25 | #include "lisp.h" |
26 | #include "buffer.h" | |
3e4731a3 | 27 | #include "keyboard.h" |
e35f6ff7 | 28 | #include "keymap.h" |
44fa5b1e | 29 | #include "frame.h" |
7ab12479 JB |
30 | #include "window.h" |
31 | #include "commands.h" | |
32 | #include "indent.h" | |
33 | #include "termchar.h" | |
34 | #include "disptab.h" | |
dfcf069d | 35 | #include "dispextern.h" |
5500c422 GM |
36 | #include "blockinput.h" |
37 | #include "intervals.h" | |
de509a60 | 38 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 39 | |
6d55d620 | 40 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 41 | #include "xterm.h" |
5500c422 | 42 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
43 | #ifdef WINDOWSNT |
44 | #include "w32term.h" | |
45 | #endif | |
1e3c8885 EZ |
46 | #ifdef MSDOS |
47 | #include "msdos.h" | |
48 | #endif | |
edfda783 AR |
49 | #ifdef HAVE_NS |
50 | #include "nsterm.h" | |
51 | #endif | |
5500c422 | 52 | |
955cbe7b PE |
53 | Lisp_Object Qwindowp, Qwindow_live_p; |
54 | static Lisp_Object Qwindow_configuration_p; | |
55 | static Lisp_Object Qdisplay_buffer; | |
56 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; | |
57 | static Lisp_Object Qwindow_size_fixed; | |
87478b52 | 58 | |
f57e2426 J |
59 | static int displayed_window_lines (struct window *); |
60 | static struct window *decode_window (Lisp_Object); | |
61 | static int count_windows (struct window *); | |
62 | static int get_leaf_windows (struct window *, struct window **, int); | |
63 | static void window_scroll (Lisp_Object, int, int, int); | |
64 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); | |
65 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
66 | static int window_min_size_1 (struct window *, int, int); | |
67 | static int window_min_size_2 (struct window *, int, int); | |
68 | static int window_min_size (struct window *, int, int, int, int *); | |
69 | static void size_window (Lisp_Object, int, int, int, int, int); | |
70 | static int freeze_window_start (struct window *, void *); | |
71 | static int window_fixed_size_p (struct window *, int, int); | |
72 | static void enlarge_window (Lisp_Object, int, int); | |
73 | static Lisp_Object window_list (void); | |
74 | static int add_window_to_list (struct window *, void *); | |
75 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
76 | Lisp_Object); | |
77 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
78 | Lisp_Object, int); | |
79 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
80 | Lisp_Object *); | |
2f7c71a1 | 81 | static void foreach_window (struct frame *, |
f95464e4 | 82 | int (* fn) (struct window *, void *), |
2f7c71a1 | 83 | void *); |
f57e2426 J |
84 | static int foreach_window_1 (struct window *, |
85 | int (* fn) (struct window *, void *), | |
86 | void *); | |
87 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
7c82f3e2 | 88 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 89 | |
7ab12479 JB |
90 | /* This is the window in which the terminal's cursor should |
91 | be left when nothing is being done with it. This must | |
92 | always be a leaf window, and its buffer is selected by | |
93 | the top level editing loop at the end of each command. | |
94 | ||
95 | This value is always the same as | |
44fa5b1e | 96 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
97 | |
98 | Lisp_Object selected_window; | |
99 | ||
67492200 GM |
100 | /* A list of all windows for use by next_window and Fwindow_list. |
101 | Functions creating or deleting windows should invalidate this cache | |
102 | by setting it to nil. */ | |
103 | ||
104 | Lisp_Object Vwindow_list; | |
105 | ||
5500c422 GM |
106 | /* The mini-buffer window of the selected frame. |
107 | Note that you cannot test for mini-bufferness of an arbitrary window | |
108 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 109 | the selected window. */ |
5500c422 | 110 | |
7ab12479 JB |
111 | Lisp_Object minibuf_window; |
112 | ||
3f49fddc KS |
113 | /* Non-nil means it is the window whose mode line should be |
114 | shown as the selected window when the minibuffer is selected. */ | |
115 | ||
3dbab091 | 116 | Lisp_Object minibuf_selected_window; |
3f49fddc | 117 | |
a58ec57d | 118 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 119 | |
955cbe7b | 120 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 121 | |
7ab12479 | 122 | /* Incremented for each window created. */ |
5500c422 | 123 | |
7ab12479 JB |
124 | static int sequence_number; |
125 | ||
5b03d3c0 | 126 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 127 | |
5b03d3c0 RS |
128 | static int window_initialized; |
129 | ||
543f5fb1 | 130 | /* Hook to run when window config changes. */ |
5500c422 | 131 | |
eeca6f6f | 132 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 RS |
133 | /* Incremented by 1 whenever a window is deleted. */ |
134 | ||
2b96acb7 | 135 | static int window_deletion_count; |
0d384044 | 136 | |
66d43aea LT |
137 | /* Used by the function window_scroll_pixel_based */ |
138 | ||
c876b227 | 139 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 140 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 141 | |
c876b227 SM |
142 | /* Same for window_scroll_line_based. */ |
143 | ||
144 | static int window_scroll_preserve_hpos; | |
145 | static int window_scroll_preserve_vpos; | |
146 | ||
5500c422 | 147 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 148 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 149 | static int inhibit_frame_unsplittable; |
ef79d2fa | 150 | #endif |
666e158e | 151 | |
7ab12479 JB |
152 | \f |
153 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
23fe745a | 154 | doc: /* Return t if OBJECT is a window. */) |
5842a27b | 155 | (Lisp_Object object) |
7ab12479 | 156 | { |
413430c5 | 157 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
158 | } |
159 | ||
806b4d9b | 160 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
23fe745a | 161 | doc: /* Return t if OBJECT is a window which is currently visible. */) |
5842a27b | 162 | (Lisp_Object object) |
605be8af | 163 | { |
9e571f49 | 164 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
165 | } |
166 | ||
7ab12479 | 167 | Lisp_Object |
971de7fb | 168 | make_window (void) |
7ab12479 | 169 | { |
cffec418 | 170 | Lisp_Object val; |
7ab12479 | 171 | register struct window *p; |
cffec418 | 172 | |
26605be9 | 173 | p = allocate_window (); |
2a1893f4 SM |
174 | ++sequence_number; |
175 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
176 | XSETFASTINT (p->left_col, 0); |
177 | XSETFASTINT (p->top_line, 0); | |
178 | XSETFASTINT (p->total_lines, 0); | |
179 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 180 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 181 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 182 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
183 | p->start = Fmake_marker (); |
184 | p->pointm = Fmake_marker (); | |
d834a2e9 | 185 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 186 | p->frame = Qnil; |
7ab12479 JB |
187 | p->display_table = Qnil; |
188 | p->dedicated = Qnil; | |
cfbb2395 | 189 | p->window_parameters = Qnil; |
5500c422 | 190 | p->pseudo_window_p = 0; |
72af86bd AS |
191 | memset (&p->cursor, 0, sizeof (p->cursor)); |
192 | memset (&p->last_cursor, 0, sizeof (p->last_cursor)); | |
193 | memset (&p->phys_cursor, 0, sizeof (p->phys_cursor)); | |
5500c422 | 194 | p->desired_matrix = p->current_matrix = 0; |
7a146de2 | 195 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 196 | p->phys_cursor_type = -1; |
4b26579e | 197 | p->phys_cursor_width = -1; |
5500c422 GM |
198 | p->must_be_updated_p = 0; |
199 | XSETFASTINT (p->window_end_vpos, 0); | |
200 | XSETFASTINT (p->window_end_pos, 0); | |
201 | p->window_end_valid = Qnil; | |
202 | p->vscroll = 0; | |
cffec418 | 203 | XSETWINDOW (val, p); |
5500c422 | 204 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 205 | p->frozen_window_start_p = 0; |
6b448755 | 206 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
207 | p->left_margin_cols = Qnil; |
208 | p->right_margin_cols = Qnil; | |
209 | p->left_fringe_width = Qnil; | |
210 | p->right_fringe_width = Qnil; | |
211 | p->fringes_outside_margins = Qnil; | |
212 | p->scroll_bar_width = Qnil; | |
213 | p->vertical_scroll_bar_type = Qt; | |
047aaeb9 | 214 | p->resize_proportionally = Qnil; |
67492200 GM |
215 | |
216 | Vwindow_list = Qnil; | |
7ab12479 JB |
217 | return val; |
218 | } | |
219 | ||
a7ca3326 | 220 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, |
fdb82f93 | 221 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
5842a27b | 222 | (void) |
7ab12479 JB |
223 | { |
224 | return selected_window; | |
225 | } | |
226 | ||
83762ba4 | 227 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
228 | doc: /* Return the window used now for minibuffers. |
229 | If the optional argument FRAME is specified, return the minibuffer window | |
230 | used by that frame. */) | |
5842a27b | 231 | (Lisp_Object frame) |
7ab12479 | 232 | { |
83762ba4 | 233 | if (NILP (frame)) |
1ae1a37d | 234 | frame = selected_frame; |
b7826503 | 235 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 236 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
237 | } |
238 | ||
a7ca3326 | 239 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, |
16a97296 | 240 | Swindow_minibuffer_p, 0, 1, 0, |
23fe745a | 241 | doc: /* Return non-nil if WINDOW is a minibuffer window. |
6b61353c | 242 | WINDOW defaults to the selected window. */) |
5842a27b | 243 | (Lisp_Object window) |
7ab12479 JB |
244 | { |
245 | struct window *w = decode_window (window); | |
53bb6b99 | 246 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
247 | } |
248 | ||
249 | ||
a7ca3326 | 250 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 251 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 252 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
253 | Return nil if that position is scrolled vertically out of view. |
254 | If a character is only partially visible, nil is returned, unless the | |
255 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 256 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 257 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
258 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
259 | ||
260 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
261 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
262 | where X and Y are the pixel coordinates relative to the top left corner | |
263 | of the window. The remaining elements are omitted if the character after | |
264 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 265 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 266 | display row, and VPOS is the row number (0-based) containing POS. */) |
5842a27b | 267 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
7ab12479 JB |
268 | { |
269 | register struct window *w; | |
2452438f | 270 | register EMACS_INT posint; |
7ab12479 | 271 | register struct buffer *buf; |
9a132b1f | 272 | struct text_pos top; |
0cc1039f | 273 | Lisp_Object in_window = Qnil; |
5a857365 | 274 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 275 | int x, y; |
7ab12479 | 276 | |
f28b75a9 MB |
277 | w = decode_window (window); |
278 | buf = XBUFFER (w->buffer); | |
279 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
280 | ||
120b7781 KS |
281 | if (EQ (pos, Qt)) |
282 | posint = -1; | |
283 | else if (!NILP (pos)) | |
7ab12479 | 284 | { |
b7826503 | 285 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
286 | posint = XINT (pos); |
287 | } | |
f28b75a9 MB |
288 | else if (w == XWINDOW (selected_window)) |
289 | posint = PT; | |
290 | else | |
291 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 292 | |
0cc1039f KS |
293 | /* If position is above window start or outside buffer boundaries, |
294 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
295 | if ((EQ (pos, Qt) |
296 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
297 | && CHARPOS (top) >= BUF_BEGV (buf) |
298 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 299 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 300 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
301 | in_window = Qt; |
302 | ||
303 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
304 | { |
305 | Lisp_Object part = Qnil; | |
306 | if (!fully_p) | |
307 | part = list4 (make_number (rtop), make_number (rbot), | |
308 | make_number (rowh), make_number (vpos)); | |
309 | in_window = Fcons (make_number (x), | |
310 | Fcons (make_number (y), part)); | |
311 | } | |
312 | ||
9a132b1f | 313 | return in_window; |
7ab12479 | 314 | } |
53bb6b99 | 315 | |
536833ab | 316 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 317 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
318 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
319 | If WINDOW is nil or omitted, use selected window. | |
320 | ||
7bbc67d2 KS |
321 | Return height of current line if LINE is omitted or nil. Return height of |
322 | header or mode line if LINE is `header-line' and `mode-line'. | |
323 | Otherwise, LINE is a text line number starting from 0. A negative number | |
324 | counts from the end of the window. | |
536833ab | 325 | |
7bbc67d2 | 326 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 327 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 328 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 329 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
330 | the bottom of the text line. If there are off-window pixels at the top |
331 | of the (first) text line, YPOS is negative. | |
536833ab KS |
332 | |
333 | Return nil if window display is not up-to-date. In that case, use | |
334 | `pos-visible-in-window-p' to obtain the information. */) | |
5842a27b | 335 | (Lisp_Object line, Lisp_Object window) |
b3a10345 KS |
336 | { |
337 | register struct window *w; | |
338 | register struct buffer *b; | |
339 | struct glyph_row *row, *end_row; | |
536833ab | 340 | int max_y, crop, i, n; |
b3a10345 KS |
341 | |
342 | w = decode_window (window); | |
343 | ||
344 | if (noninteractive | |
b3a10345 | 345 | || w->pseudo_window_p) |
7bbc67d2 | 346 | return Qnil; |
b3a10345 KS |
347 | |
348 | CHECK_BUFFER (w->buffer); | |
349 | b = XBUFFER (w->buffer); | |
350 | ||
351 | /* Fail if current matrix is not up-to-date. */ | |
352 | if (NILP (w->window_end_valid) | |
353 | || current_buffer->clip_changed | |
354 | || current_buffer->prevent_redisplay_optimizations_p | |
355 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
356 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
357 | return Qnil; | |
358 | ||
7bbc67d2 KS |
359 | if (NILP (line)) |
360 | { | |
361 | i = w->cursor.vpos; | |
362 | if (i < 0 || i >= w->current_matrix->nrows | |
363 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
364 | return Qnil; | |
365 | max_y = window_text_bottom_y (w); | |
366 | goto found_row; | |
367 | } | |
368 | ||
536833ab | 369 | if (EQ (line, Qheader_line)) |
b3a10345 | 370 | { |
536833ab KS |
371 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
372 | return Qnil; | |
373 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
374 | if (!row->enabled_p) |
375 | return Qnil; | |
536833ab KS |
376 | return list4 (make_number (row->height), |
377 | make_number (0), make_number (0), | |
378 | make_number (0)); | |
b3a10345 | 379 | } |
536833ab KS |
380 | |
381 | if (EQ (line, Qmode_line)) | |
b3a10345 | 382 | { |
536833ab KS |
383 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
384 | if (!row->enabled_p) | |
385 | return Qnil; | |
386 | return list4 (make_number (row->height), | |
387 | make_number (0), /* not accurate */ | |
388 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
389 | + window_text_bottom_y (w)), | |
390 | make_number (0)); | |
391 | } | |
b3a10345 | 392 | |
536833ab | 393 | CHECK_NUMBER (line); |
7bbc67d2 | 394 | n = XINT (line); |
536833ab KS |
395 | |
396 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
397 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
398 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 399 | i = 0; |
536833ab KS |
400 | |
401 | while ((n < 0 || i < n) | |
402 | && row <= end_row && row->enabled_p | |
403 | && row->y + row->height < max_y) | |
404 | row++, i++; | |
b3a10345 | 405 | |
536833ab KS |
406 | if (row > end_row || !row->enabled_p) |
407 | return Qnil; | |
408 | ||
7bbc67d2 | 409 | if (++n < 0) |
536833ab KS |
410 | { |
411 | if (-n > i) | |
412 | return Qnil; | |
7bbc67d2 KS |
413 | row += n; |
414 | i += n; | |
b3a10345 KS |
415 | } |
416 | ||
7bbc67d2 | 417 | found_row: |
536833ab KS |
418 | crop = max (0, (row->y + row->height) - max_y); |
419 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 420 | make_number (i), |
536833ab KS |
421 | make_number (row->y), |
422 | make_number (crop)); | |
b3a10345 KS |
423 | } |
424 | ||
536833ab | 425 | |
7ab12479 JB |
426 | \f |
427 | static struct window * | |
971de7fb | 428 | decode_window (register Lisp_Object window) |
7ab12479 | 429 | { |
265a9e55 | 430 | if (NILP (window)) |
7ab12479 JB |
431 | return XWINDOW (selected_window); |
432 | ||
b7826503 | 433 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
434 | return XWINDOW (window); |
435 | } | |
436 | ||
6b61353c | 437 | static struct window * |
971de7fb | 438 | decode_any_window (register Lisp_Object window) |
6b61353c KH |
439 | { |
440 | if (NILP (window)) | |
441 | return XWINDOW (selected_window); | |
442 | ||
443 | CHECK_WINDOW (window); | |
444 | return XWINDOW (window); | |
445 | } | |
446 | ||
a7ca3326 | 447 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
448 | doc: /* Return the buffer that WINDOW is displaying. |
449 | WINDOW defaults to the selected window. */) | |
5842a27b | 450 | (Lisp_Object window) |
7ab12479 JB |
451 | { |
452 | return decode_window (window)->buffer; | |
453 | } | |
454 | ||
455 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
8fef9de1 MR |
456 | doc: /* Return the number of lines in WINDOW. |
457 | WINDOW defaults to the selected window. | |
458 | ||
a77cfeaf CS |
459 | The return value includes WINDOW's mode line and header line, if any. |
460 | ||
461 | Note: The function does not take into account the value of `line-spacing' | |
462 | when calculating the number of lines in WINDOW. */) | |
5842a27b | 463 | (Lisp_Object window) |
7ab12479 | 464 | { |
6b61353c | 465 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
466 | } |
467 | ||
468 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 | 469 | doc: /* Return the number of display columns in WINDOW. |
d653c8cc MR |
470 | WINDOW defaults to the selected window. |
471 | ||
472 | Note: The return value is the number of columns available for text in | |
473 | WINDOW. If you want to find out how many columns WINDOW takes up, use | |
474 | (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
5842a27b | 475 | (Lisp_Object window) |
7ab12479 | 476 | { |
6b61353c | 477 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
478 | } |
479 | ||
35ea56c9 MR |
480 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
481 | doc: /* Return t if WINDOW is as wide as its frame. | |
482 | WINDOW defaults to the selected window. */) | |
5842a27b | 483 | (Lisp_Object window) |
35ea56c9 MR |
484 | { |
485 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
486 | } | |
487 | ||
7ab12479 | 488 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
489 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
490 | WINDOW defaults to the selected window. */) | |
5842a27b | 491 | (Lisp_Object window) |
7ab12479 JB |
492 | { |
493 | return decode_window (window)->hscroll; | |
494 | } | |
495 | ||
496 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 497 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 498 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
499 | |
500 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 501 | window so that the location of point moves off-window. */) |
5842a27b | 502 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 503 | { |
ea68264b GM |
504 | struct window *w = decode_window (window); |
505 | int hscroll; | |
7ab12479 | 506 | |
b7826503 | 507 | CHECK_NUMBER (ncol); |
ea68264b | 508 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 509 | |
ea68264b GM |
510 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
511 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 512 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 513 | |
c67fa410 | 514 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
515 | return ncol; |
516 | } | |
517 | ||
190eb263 RS |
518 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
519 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 520 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 521 | WINDOW defaults to the selected window. |
fdb82f93 | 522 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 523 | (Lisp_Object window) |
190eb263 RS |
524 | { |
525 | return decode_window (window)->redisplay_end_trigger; | |
526 | } | |
527 | ||
528 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
529 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
530 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
531 | VALUE should be a buffer position (typically a marker) or nil. | |
532 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
533 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
534 | with two arguments: WINDOW, and the end trigger value. | |
535 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 536 | (register Lisp_Object window, Lisp_Object value) |
190eb263 RS |
537 | { |
538 | register struct window *w; | |
539 | ||
540 | w = decode_window (window); | |
541 | w->redisplay_end_trigger = value; | |
542 | return value; | |
543 | } | |
544 | ||
7ab12479 | 545 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 546 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
547 | The list has the form (LEFT TOP RIGHT BOTTOM). |
548 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
549 | all relative to 0, 0 at top left corner of frame. | |
550 | ||
551 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
552 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
553 | The edges include the space used by WINDOW's scroll bar, display | |
554 | margins, fringes, header line, and/or mode line. For the edges of | |
555 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 556 | (Lisp_Object window) |
7ab12479 | 557 | { |
6b61353c | 558 | register struct window *w = decode_any_window (window); |
7ab12479 | 559 | |
949cf20f KS |
560 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
561 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
562 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
563 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
564 | Qnil)))); | |
7ab12479 JB |
565 | } |
566 | ||
c99a9eb3 RS |
567 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
568 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
569 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
570 | the top left corner of the frame. | |
571 | ||
572 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
573 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
574 | The pixel edges include the space used by WINDOW's scroll bar, display | |
575 | margins, fringes, header line, and/or mode line. For the pixel edges | |
576 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 577 | (Lisp_Object window) |
c99a9eb3 | 578 | { |
6b61353c | 579 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
580 | |
581 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
582 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
583 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
584 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
585 | Qnil)))); | |
586 | } | |
587 | ||
9d5405ec J |
588 | static void |
589 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) | |
590 | { | |
591 | struct frame *f = XFRAME (w->frame); | |
592 | *add_y = f->top_pos; | |
593 | #ifdef FRAME_MENUBAR_HEIGHT | |
594 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
595 | #endif | |
bfeabdc3 JD |
596 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
597 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
598 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
599 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
600 | #endif | |
601 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
602 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
603 | #endif | |
604 | *add_x = f->left_pos; | |
bfeabdc3 JD |
605 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
606 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
607 | #endif | |
9d5405ec J |
608 | } |
609 | ||
610 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
611 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
612 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
613 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
614 | the top left corner of the display. | |
615 | ||
616 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
617 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
618 | The pixel edges include the space used by WINDOW's scroll bar, display | |
619 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 620 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 621 | (Lisp_Object window) |
9d5405ec J |
622 | { |
623 | register struct window *w = decode_any_window (window); | |
624 | int add_x, add_y; | |
ed3751c8 | 625 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
626 | |
627 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
628 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
629 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
630 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
631 | Qnil)))); | |
632 | } | |
633 | ||
c99a9eb3 RS |
634 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
635 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
636 | The list has the form (LEFT TOP RIGHT BOTTOM). |
637 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
638 | all relative to 0, 0 at top left corner of frame. | |
639 | ||
640 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
641 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
642 | The inside edges do not include the space used by the WINDOW's scroll | |
643 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 644 | (Lisp_Object window) |
c99a9eb3 | 645 | { |
6b61353c | 646 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
647 | |
648 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
649 | + WINDOW_LEFT_MARGIN_COLS (w) | |
650 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
651 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
652 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 653 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
654 | - WINDOW_RIGHT_MARGIN_COLS (w) |
655 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
656 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
657 | - WINDOW_MODE_LINE_LINES (w))); | |
658 | } | |
659 | ||
660 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 661 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
662 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
663 | the top left corner of the frame. | |
664 | ||
665 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
666 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
667 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 668 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 669 | (Lisp_Object window) |
c99a9eb3 | 670 | { |
6b61353c | 671 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
672 | |
673 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
674 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
675 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
676 | make_number (WINDOW_TOP_EDGE_Y (w) | |
677 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 678 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
679 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
680 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
681 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
682 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
683 | } | |
684 | ||
9d5405ec J |
685 | DEFUN ("window-inside-absolute-pixel-edges", |
686 | Fwindow_inside_absolute_pixel_edges, | |
687 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
688 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
689 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
690 | the top left corner of the display. | |
691 | ||
692 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
693 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
694 | The inside edges do not include the space used by WINDOW's scroll bar, | |
695 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 696 | (Lisp_Object window) |
9d5405ec J |
697 | { |
698 | register struct window *w = decode_any_window (window); | |
699 | int add_x, add_y; | |
ed3751c8 | 700 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
701 | |
702 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
703 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
704 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
705 | make_number (WINDOW_TOP_EDGE_Y (w) | |
706 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
707 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
708 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
709 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
710 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
711 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
712 | } | |
713 | ||
9173a8fb | 714 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 715 | If it is not, return ON_NOTHING; |
9173a8fb | 716 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 717 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 718 | if it is on the border between the window and its right sibling, |
341f3858 | 719 | return ON_VERTICAL_BORDER. |
9173a8fb | 720 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 721 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 722 | if it is in left or right fringe of the window, |
9173a8fb | 723 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 724 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 725 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
726 | |
727 | X and Y are frame relative pixel coordinates. */ | |
728 | ||
7442878f | 729 | static enum window_part |
9173a8fb | 730 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 731 | { |
b0228ace | 732 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
9173a8fb | 733 | int left_x, right_x; |
7442878f | 734 | enum window_part part; |
949cf20f KS |
735 | int ux = FRAME_COLUMN_WIDTH (f); |
736 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
737 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
738 | /* The width of the area where the vertical line can be dragged. |
739 | (Between mode lines for instance. */ | |
740 | int grabbable_width = ux; | |
949cf20f | 741 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb CY |
742 | int top_y = WINDOW_TOP_EDGE_Y (w); |
743 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
744 | ||
745 | /* Outside any interesting row? */ | |
746 | if (y < top_y || y >= bottom_y) | |
747 | return ON_NOTHING; | |
b0228ace | 748 | |
466539bc EZ |
749 | /* In what's below, we subtract 1 when computing right_x because we |
750 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
751 | if (w->pseudo_window_p) |
752 | { | |
753 | left_x = 0; | |
949cf20f | 754 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
755 | } |
756 | else | |
757 | { | |
949cf20f KS |
758 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
759 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 760 | } |
37962e60 | 761 | |
1cb794ba GM |
762 | /* On the mode line or header line? If it's near the start of |
763 | the mode or header line of window that's has a horizontal | |
764 | sibling, say it's on the vertical line. That's to be able | |
765 | to resize windows horizontally in case we're using toolkit | |
766 | scroll bars. */ | |
b0228ace | 767 | |
1cb794ba | 768 | if (WINDOW_WANTS_MODELINE_P (w) |
9173a8fb | 769 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 770 | { |
949cf20f KS |
771 | part = ON_MODE_LINE; |
772 | ||
773 | header_vertical_border_check: | |
b0228ace GM |
774 | /* We're somewhere on the mode line. We consider the place |
775 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 776 | as the vertical border. If scroll bars on the left, |
b0228ace | 777 | return the right window. */ |
9173a8fb CY |
778 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
779 | || WINDOW_RIGHTMOST_P (w)) | |
780 | && !WINDOW_LEFTMOST_P (w) | |
781 | && eabs (x - x0) < grabbable_width) | |
782 | return ON_VERTICAL_BORDER; | |
783 | ||
784 | /* Make sure we're not at the rightmost position of a | |
785 | mode-/header-line and there's yet another window on the | |
786 | right. (Bug#1372) */ | |
787 | else if ((WINDOW_RIGHTMOST_P (w) || x < x1) | |
788 | && eabs (x - x1) < grabbable_width) | |
789 | return ON_VERTICAL_BORDER; | |
790 | ||
791 | if (x < x0 || x >= x1) | |
cb639b8f KS |
792 | return ON_NOTHING; |
793 | ||
949cf20f | 794 | return part; |
b0228ace | 795 | } |
949cf20f KS |
796 | |
797 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
9173a8fb | 798 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 799 | { |
949cf20f KS |
800 | part = ON_HEADER_LINE; |
801 | goto header_vertical_border_check; | |
1cb794ba | 802 | } |
949cf20f | 803 | |
9173a8fb | 804 | if (x < x0 || x >= x1) return ON_NOTHING; |
cb639b8f | 805 | |
949cf20f | 806 | /* Outside any interesting column? */ |
9173a8fb CY |
807 | if (x < left_x || x > right_x) |
808 | return ON_SCROLL_BAR; | |
949cf20f KS |
809 | |
810 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
811 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 812 | |
949cf20f KS |
813 | text_left = window_box_left (w, TEXT_AREA); |
814 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
815 | ||
816 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 817 | { |
447e9da0 | 818 | if (!w->pseudo_window_p |
949cf20f | 819 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 820 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
821 | && (eabs (x - right_x) < grabbable_width)) |
822 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 823 | } |
9173a8fb CY |
824 | /* Need to say "x > right_x" rather than >=, since on character |
825 | terminals, the vertical line's x coordinate is right_x. */ | |
826 | else if (!w->pseudo_window_p | |
827 | && !WINDOW_RIGHTMOST_P (w) | |
828 | && x > right_x - ux) | |
829 | return ON_VERTICAL_BORDER; | |
830 | ||
831 | if (x < text_left) | |
949cf20f KS |
832 | { |
833 | if (lmargin_width > 0 | |
834 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
835 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
836 | : (x < left_x + lmargin_width))) | |
837 | return ON_LEFT_MARGIN; | |
838 | ||
949cf20f KS |
839 | return ON_LEFT_FRINGE; |
840 | } | |
841 | ||
9173a8fb | 842 | if (x >= text_right) |
949cf20f KS |
843 | { |
844 | if (rmargin_width > 0 | |
845 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
846 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
847 | : (x >= right_x - rmargin_width))) | |
848 | return ON_RIGHT_MARGIN; | |
849 | ||
949cf20f KS |
850 | return ON_RIGHT_FRINGE; |
851 | } | |
852 | ||
853 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 854 | return ON_TEXT; |
d5783c40 JB |
855 | } |
856 | ||
9173a8fb CY |
857 | /* Take X is the frame-relative pixel x-coordinate, and return the |
858 | x-coordinate relative to part PART of window W. */ | |
859 | int | |
860 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
861 | { | |
862 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
863 | ||
864 | switch (part) | |
865 | { | |
866 | case ON_TEXT: | |
867 | return x - window_box_left (w, TEXT_AREA); | |
868 | ||
869 | case ON_LEFT_FRINGE: | |
870 | return x - left_x; | |
871 | ||
872 | case ON_RIGHT_FRINGE: | |
873 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
874 | ||
875 | case ON_LEFT_MARGIN: | |
876 | return (x - left_x | |
877 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
878 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
879 | ||
880 | case ON_RIGHT_MARGIN: | |
881 | return (x + 1 | |
882 | - ((w->pseudo_window_p) | |
883 | ? WINDOW_TOTAL_WIDTH (w) | |
884 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
885 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
886 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
887 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
888 | } | |
889 | ||
890 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
891 | return 0; | |
892 | } | |
893 | ||
b0228ace | 894 | |
d5783c40 | 895 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
896 | Scoordinates_in_window_p, 2, 2, 0, |
897 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
898 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
899 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 900 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
901 | frame. |
902 | If COORDINATES are in the text portion of WINDOW, | |
903 | the coordinates relative to the window are returned. | |
904 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
905 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
906 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
907 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 908 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
909 | `vertical-line' is returned. |
910 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
911 | or `right-margin' is returned. */) | |
5842a27b | 912 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 913 | { |
5500c422 GM |
914 | struct window *w; |
915 | struct frame *f; | |
d5783c40 | 916 | int x, y; |
5500c422 | 917 | Lisp_Object lx, ly; |
d5783c40 | 918 | |
6b61353c | 919 | CHECK_WINDOW (window); |
5500c422 GM |
920 | w = XWINDOW (window); |
921 | f = XFRAME (w->frame); | |
b7826503 | 922 | CHECK_CONS (coordinates); |
5500c422 GM |
923 | lx = Fcar (coordinates); |
924 | ly = Fcdr (coordinates); | |
b7826503 PJ |
925 | CHECK_NUMBER_OR_FLOAT (lx); |
926 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
927 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
928 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 929 | |
9173a8fb | 930 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 931 | { |
7442878f | 932 | case ON_NOTHING: |
d5783c40 JB |
933 | return Qnil; |
934 | ||
7442878f | 935 | case ON_TEXT: |
9173a8fb CY |
936 | /* Convert X and Y to window relative pixel coordinates, and |
937 | return the canonical char units. */ | |
938 | x -= window_box_left (w, TEXT_AREA); | |
939 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
940 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
941 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 942 | |
7442878f | 943 | case ON_MODE_LINE: |
d5783c40 | 944 | return Qmode_line; |
37962e60 | 945 | |
7442878f | 946 | case ON_VERTICAL_BORDER: |
e5d77022 | 947 | return Qvertical_line; |
d5783c40 | 948 | |
7442878f | 949 | case ON_HEADER_LINE: |
045dee35 | 950 | return Qheader_line; |
5500c422 | 951 | |
7442878f GM |
952 | case ON_LEFT_FRINGE: |
953 | return Qleft_fringe; | |
177c0ea7 | 954 | |
7442878f GM |
955 | case ON_RIGHT_FRINGE: |
956 | return Qright_fringe; | |
fbad6f9a | 957 | |
49b996e7 GM |
958 | case ON_LEFT_MARGIN: |
959 | return Qleft_margin; | |
177c0ea7 | 960 | |
49b996e7 GM |
961 | case ON_RIGHT_MARGIN: |
962 | return Qright_margin; | |
963 | ||
6487f669 RS |
964 | case ON_SCROLL_BAR: |
965 | /* Historically we are supposed to return nil in this case. */ | |
966 | return Qnil; | |
967 | ||
d5783c40 JB |
968 | default: |
969 | abort (); | |
970 | } | |
971 | } | |
972 | ||
67492200 GM |
973 | |
974 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
975 | Check if window W contains coordinates specified by USER_DATA which |
976 | is actually a pointer to a struct check_window_data CW. | |
977 | ||
978 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
979 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 980 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
981 | zero from this function to stop iterating over windows. */ |
982 | ||
983 | struct check_window_data | |
984 | { | |
985 | Lisp_Object *window; | |
9173a8fb | 986 | int x, y; |
341f3858 | 987 | enum window_part *part; |
f95464e4 | 988 | }; |
67492200 GM |
989 | |
990 | static int | |
971de7fb | 991 | check_window_containing (struct window *w, void *user_data) |
67492200 | 992 | { |
f95464e4 | 993 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
994 | enum window_part found; |
995 | int continue_p = 1; | |
67492200 | 996 | |
f95464e4 | 997 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 998 | if (found != ON_NOTHING) |
67492200 | 999 | { |
341f3858 | 1000 | *cw->part = found; |
f95464e4 | 1001 | XSETWINDOW (*cw->window, w); |
7442878f | 1002 | continue_p = 0; |
67492200 | 1003 | } |
177c0ea7 | 1004 | |
7442878f | 1005 | return continue_p; |
67492200 GM |
1006 | } |
1007 | ||
1008 | ||
5500c422 | 1009 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1010 | return it as a Lisp_Object. |
1011 | ||
1012 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1013 | set *PART to the id of that element. |
949cf20f | 1014 | |
341f3858 | 1015 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1016 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1017 | ||
1018 | This function was previously implemented with a loop cycling over | |
1019 | windows with Fnext_window, and starting with the frame's selected | |
1020 | window. It turned out that this doesn't work with an | |
1021 | implementation of next_window using Vwindow_list, because | |
1022 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1023 | tree of F when this function is called asynchronously from | |
1024 | note_mouse_highlight. The original loop didn't terminate in this | |
1025 | case. */ | |
5500c422 | 1026 | |
7ab12479 | 1027 | Lisp_Object |
9173a8fb CY |
1028 | window_from_coordinates (struct frame *f, int x, int y, |
1029 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1030 | { |
67492200 | 1031 | Lisp_Object window; |
f95464e4 | 1032 | struct check_window_data cw; |
341f3858 KS |
1033 | enum window_part dummy; |
1034 | ||
1035 | if (part == 0) | |
1036 | part = &dummy; | |
5500c422 | 1037 | |
67492200 | 1038 | window = Qnil; |
9173a8fb | 1039 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1040 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1041 | |
67492200 GM |
1042 | /* If not found above, see if it's in the tool bar window, if a tool |
1043 | bar exists. */ | |
1044 | if (NILP (window) | |
1045 | && tool_bar_p | |
1046 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1047 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
9173a8fb | 1048 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
7442878f | 1049 | != ON_NOTHING)) |
5500c422 | 1050 | { |
341f3858 | 1051 | *part = ON_TEXT; |
67492200 | 1052 | window = f->tool_bar_window; |
5500c422 | 1053 | } |
37962e60 | 1054 | |
67492200 | 1055 | return window; |
7ab12479 JB |
1056 | } |
1057 | ||
ab17c3f2 | 1058 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1059 | doc: /* Return window containing coordinates X and Y on FRAME. |
1060 | If omitted, FRAME defaults to the currently selected frame. | |
1061 | The top left corner of the frame is considered to be row 0, | |
1062 | column 0. */) | |
5842a27b | 1063 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1064 | { |
5500c422 | 1065 | struct frame *f; |
7ab12479 | 1066 | |
44fa5b1e | 1067 | if (NILP (frame)) |
1ae1a37d | 1068 | frame = selected_frame; |
b7826503 | 1069 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1070 | f = XFRAME (frame); |
7ab12479 | 1071 | |
5500c422 | 1072 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1073 | CHECK_NUMBER_OR_FLOAT (x); |
1074 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1075 | |
177c0ea7 | 1076 | return window_from_coordinates (f, |
2c77cf3b RS |
1077 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1078 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1079 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1080 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1081 | 0, 0); |
7ab12479 JB |
1082 | } |
1083 | ||
1084 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1085 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1086 | WINDOW defaults to the selected window. |
1087 | ||
fdb82f93 PJ |
1088 | For a nonselected window, this is the value point would have |
1089 | if that window were selected. | |
1090 | ||
1091 | Note that, when WINDOW is the selected window and its buffer | |
1092 | is also currently selected, the value returned is the same as (point). | |
1093 | It would be more strictly correct to return the `top-level' value | |
1094 | of point, outside of any save-excursion forms. | |
1095 | But that is hard to define. */) | |
5842a27b | 1096 | (Lisp_Object window) |
7ab12479 JB |
1097 | { |
1098 | register struct window *w = decode_window (window); | |
1099 | ||
1100 | if (w == XWINDOW (selected_window) | |
1101 | && current_buffer == XBUFFER (w->buffer)) | |
1102 | return Fpoint (); | |
1103 | return Fmarker_position (w->pointm); | |
1104 | } | |
1105 | ||
1106 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1107 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1108 | WINDOW defaults to the selected window. |
fdb82f93 | 1109 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1110 | (Lisp_Object window) |
7ab12479 JB |
1111 | { |
1112 | return Fmarker_position (decode_window (window)->start); | |
1113 | } | |
1114 | ||
8646118f RS |
1115 | /* This is text temporarily removed from the doc string below. |
1116 | ||
fdb82f93 PJ |
1117 | This function returns nil if the position is not currently known. |
1118 | That happens when redisplay is preempted and doesn't finish. | |
1119 | If in that case you want to compute where the end of the window would | |
1120 | have been if redisplay had finished, do this: | |
1121 | (save-excursion | |
1122 | (goto-char (window-start window)) | |
1123 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1124 | (point))") */ |
1125 | ||
478292ed | 1126 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1127 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1128 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1129 | This is updated by redisplay, when it runs to completion. |
1130 | Simply changing the buffer text or setting `window-start' | |
1131 | does not update this value. | |
a0a37a6f LT |
1132 | Return nil if there is no recorded value. \(This can happen if the |
1133 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1134 | If UPDATE is non-nil, compute the up-to-date position |
1135 | if it isn't already recorded. */) | |
5842a27b | 1136 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1137 | { |
1138 | Lisp_Object value; | |
1139 | struct window *w = decode_window (window); | |
5a41ab94 | 1140 | Lisp_Object buf; |
31790df3 | 1141 | struct buffer *b; |
5a41ab94 RS |
1142 | |
1143 | buf = w->buffer; | |
b7826503 | 1144 | CHECK_BUFFER (buf); |
b3a10345 | 1145 | b = XBUFFER (buf); |
5a41ab94 | 1146 | |
8646118f | 1147 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1148 | /* If we don't know the end position, return nil. |
1149 | The user can compute it with vertical-motion if he wants to. | |
1150 | It would be nicer to do it automatically, | |
1151 | but that's so slow that it would probably bother people. */ | |
1152 | if (NILP (w->window_end_valid)) | |
1153 | return Qnil; | |
8646118f | 1154 | #endif |
7250968e | 1155 | |
478292ed RS |
1156 | if (! NILP (update) |
1157 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1158 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1159 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1160 | && !noninteractive) |
478292ed | 1161 | { |
cbc099e5 GM |
1162 | struct text_pos startp; |
1163 | struct it it; | |
b3a10345 KS |
1164 | struct buffer *old_buffer = NULL; |
1165 | ||
1166 | /* Cannot use Fvertical_motion because that function doesn't | |
1167 | cope with variable-height lines. */ | |
1168 | if (b != current_buffer) | |
1169 | { | |
1170 | old_buffer = current_buffer; | |
1171 | set_buffer_internal (b); | |
1172 | } | |
2d6d9df0 GM |
1173 | |
1174 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1175 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1176 | `-l' containing a call to `rmail' with subsequent other |
1177 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1178 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1179 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1180 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1181 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1182 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1183 | else |
cbc099e5 GM |
1184 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1185 | ||
cbc099e5 GM |
1186 | start_display (&it, w, startp); |
1187 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1188 | if (it.current_y < it.last_visible_y) |
1189 | move_it_past_eol (&it); | |
cbc099e5 | 1190 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1191 | |
99593a9d GM |
1192 | if (old_buffer) |
1193 | set_buffer_internal (old_buffer); | |
478292ed RS |
1194 | } |
1195 | else | |
b3a10345 | 1196 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1197 | |
1198 | return value; | |
1199 | } | |
1200 | ||
a7ca3326 | 1201 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f LT |
1202 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1203 | Return POS. */) | |
5842a27b | 1204 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1205 | { |
1206 | register struct window *w = decode_window (window); | |
1207 | ||
b7826503 | 1208 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1209 | if (w == XWINDOW (selected_window) |
1210 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1211 | Fgoto_char (pos); |
1212 | else | |
1213 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1214 | |
0685cb3c GM |
1215 | /* We have to make sure that redisplay updates the window to show |
1216 | the new value of point. */ | |
1217 | if (!EQ (window, selected_window)) | |
799417bd | 1218 | ++windows_or_buffers_changed; |
177c0ea7 | 1219 | |
7ab12479 JB |
1220 | return pos; |
1221 | } | |
1222 | ||
1223 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1224 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1225 | WINDOW defaults to the selected window. Return POS. |
1226 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1227 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1228 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1229 | { |
1230 | register struct window *w = decode_window (window); | |
1231 | ||
b7826503 | 1232 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1233 | set_marker_restricted (w->start, pos, w->buffer); |
1234 | /* this is not right, but much easier than doing what is right. */ | |
1235 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1236 | if (NILP (noforce)) |
7ab12479 JB |
1237 | w->force_start = Qt; |
1238 | w->update_mode_line = Qt; | |
d834a2e9 | 1239 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1240 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1241 | if (!EQ (window, selected_window)) |
1242 | windows_or_buffers_changed++; | |
ce7fae7d | 1243 | |
7ab12479 JB |
1244 | return pos; |
1245 | } | |
1246 | ||
d653c8cc | 1247 | |
a7ca3326 | 1248 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1249 | 0, 1, 0, |
1250 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1251 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1252 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1253 | never called with WINDOW as its argument, or the value set by that | |
1254 | function was internally reset since its last call. WINDOW defaults to | |
1255 | the selected window. | |
1256 | ||
1257 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1258 | from displaying another buffer in it. `get-lru-window' and | |
1259 | `get-largest-window' treat dedicated windows specially. | |
1260 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1261 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1262 | ||
1263 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1264 | window, unless that window is "strongly" dedicated to its buffer, that | |
1265 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1266 | (Lisp_Object window) |
7ab12479 JB |
1267 | { |
1268 | return decode_window (window)->dedicated; | |
1269 | } | |
1270 | ||
d207b766 RS |
1271 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1272 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1273 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1274 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1275 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1276 | Return FLAG. |
1277 | ||
7bfac547 MR |
1278 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1279 | from displaying another buffer in it. `get-lru-window' and | |
1280 | `get-largest-window' treat dedicated windows specially. | |
1281 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1282 | `kill-buffer' can delete a dedicated window and the containing | |
1283 | frame. | |
1284 | ||
1285 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1286 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1287 | displayed by a window, unless that window is strongly dedicated to its | |
1288 | buffer. If and when `set-window-buffer' displays another buffer in a | |
1289 | window, it also makes sure that the window is not marked as dedicated. */) | |
5842a27b | 1290 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1291 | { |
1292 | register struct window *w = decode_window (window); | |
1293 | ||
d653c8cc | 1294 | w->dedicated = flag; |
7ab12479 JB |
1295 | return w->dedicated; |
1296 | } | |
1297 | ||
d653c8cc | 1298 | |
cfbb2395 JB |
1299 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1300 | 0, 1, 0, | |
d653c8cc MR |
1301 | doc: /* Return the parameters of WINDOW and their values. |
1302 | WINDOW defaults to the selected window. The return value is a list of | |
1303 | elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1304 | (Lisp_Object window) |
cfbb2395 | 1305 | { |
927abf37 | 1306 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1307 | } |
1308 | ||
1309 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1310 | 2, 2, 0, | |
d653c8cc MR |
1311 | doc: /* Return WINDOW's value for PARAMETER. |
1312 | WINDOW defaults to the selected window. */) | |
5842a27b | 1313 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1314 | { |
927abf37 JB |
1315 | Lisp_Object result; |
1316 | ||
1317 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1318 | return CDR_SAFE (result); | |
cfbb2395 JB |
1319 | } |
1320 | ||
cfbb2395 JB |
1321 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1322 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1323 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1324 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1325 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 JB |
1326 | { |
1327 | register struct window *w = decode_window (window); | |
1328 | Lisp_Object old_alist_elt; | |
1329 | ||
1330 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1331 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1332 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1333 | else | |
1334 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1335 | return value; |
cfbb2395 JB |
1336 | } |
1337 | ||
1338 | ||
7ab12479 JB |
1339 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1340 | 0, 1, 0, | |
c85322d0 EZ |
1341 | doc: /* Return the display-table that WINDOW is using. |
1342 | WINDOW defaults to the selected window. */) | |
5842a27b | 1343 | (Lisp_Object window) |
7ab12479 JB |
1344 | { |
1345 | return decode_window (window)->display_table; | |
1346 | } | |
1347 | ||
5500c422 GM |
1348 | /* Get the display table for use on window W. This is either W's |
1349 | display table or W's buffer's display table. Ignore the specified | |
1350 | tables if they are not valid; if no valid table is specified, | |
1351 | return 0. */ | |
7ab12479 | 1352 | |
319315f1 | 1353 | struct Lisp_Char_Table * |
971de7fb | 1354 | window_display_table (struct window *w) |
7ab12479 | 1355 | { |
c756cdbe GM |
1356 | struct Lisp_Char_Table *dp = NULL; |
1357 | ||
1358 | if (DISP_TABLE_P (w->display_table)) | |
1359 | dp = XCHAR_TABLE (w->display_table); | |
1360 | else if (BUFFERP (w->buffer)) | |
1361 | { | |
1362 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1363 | |
4b4deea2 TT |
1364 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1365 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1366 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1367 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1368 | } | |
171d003c | 1369 | |
c756cdbe | 1370 | return dp; |
7ab12479 JB |
1371 | } |
1372 | ||
3a2712f9 | 1373 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1374 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1375 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1376 | { |
1377 | register struct window *w; | |
7ab12479 JB |
1378 | |
1379 | w = decode_window (window); | |
1380 | w->display_table = table; | |
1381 | return table; | |
1382 | } | |
1383 | \f | |
2f7c71a1 AS |
1384 | static void delete_window (Lisp_Object); |
1385 | ||
7ab12479 JB |
1386 | /* Record info on buffer window w is displaying |
1387 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1388 | static void |
971de7fb | 1389 | unshow_buffer (register struct window *w) |
7ab12479 | 1390 | { |
12cae7c0 | 1391 | Lisp_Object buf; |
b73ea88e | 1392 | struct buffer *b; |
7ab12479 | 1393 | |
12cae7c0 | 1394 | buf = w->buffer; |
b73ea88e RS |
1395 | b = XBUFFER (buf); |
1396 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1397 | abort (); |
1398 | ||
573f41ab | 1399 | #if 0 |
7ab12479 JB |
1400 | if (w == XWINDOW (selected_window) |
1401 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1402 | /* Do this except when the selected window's buffer | |
1403 | is being removed from some other window. */ | |
573f41ab RS |
1404 | #endif |
1405 | /* last_window_start records the start position that this buffer | |
1406 | had in the last window to be disconnected from it. | |
1407 | Now that this statement is unconditional, | |
1408 | it is possible for the buffer to be displayed in the | |
1409 | selected window, while last_window_start reflects another | |
1410 | window which was recently showing the same buffer. | |
1411 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1412 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1413 | |
1414 | /* Point in the selected window's buffer | |
1415 | is actually stored in that buffer, and the window's pointm isn't used. | |
1416 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1417 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1418 | /* This line helps to fix Horsley's testbug.el bug. */ | |
4b4deea2 TT |
1419 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1420 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
1421 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) | |
b73ea88e RS |
1422 | temp_set_point_both (b, |
1423 | clip_to_bounds (BUF_BEGV (b), | |
1424 | XMARKER (w->pointm)->charpos, | |
1425 | BUF_ZV (b)), | |
1426 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1427 | marker_byte_position (w->pointm), | |
1428 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1429 | |
4b4deea2 TT |
1430 | if (WINDOWP (BVAR (b, last_selected_window)) |
1431 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
1432 | BVAR (b, last_selected_window) = Qnil; | |
7ab12479 JB |
1433 | } |
1434 | ||
1435 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1436 | static void |
971de7fb | 1437 | replace_window (Lisp_Object old, Lisp_Object replacement) |
7ab12479 JB |
1438 | { |
1439 | register Lisp_Object tem; | |
1440 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1441 | ||
44fa5b1e JB |
1442 | /* If OLD is its frame's root_window, then replacement is the new |
1443 | root_window for that frame. */ | |
7ab12479 | 1444 | |
7f4161e0 | 1445 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1446 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1447 | |
949cf20f KS |
1448 | p->left_col = o->left_col; |
1449 | p->top_line = o->top_line; | |
1450 | p->total_cols = o->total_cols; | |
1451 | p->total_lines = o->total_lines; | |
5500c422 GM |
1452 | p->desired_matrix = p->current_matrix = 0; |
1453 | p->vscroll = 0; | |
72af86bd AS |
1454 | memset (&p->cursor, 0, sizeof (p->cursor)); |
1455 | memset (&p->last_cursor, 0, sizeof (p->last_cursor)); | |
1456 | memset (&p->phys_cursor, 0, sizeof (p->phys_cursor)); | |
5500c422 | 1457 | p->phys_cursor_type = -1; |
4b26579e | 1458 | p->phys_cursor_width = -1; |
5500c422 GM |
1459 | p->must_be_updated_p = 0; |
1460 | p->pseudo_window_p = 0; | |
1461 | XSETFASTINT (p->window_end_vpos, 0); | |
1462 | XSETFASTINT (p->window_end_pos, 0); | |
1463 | p->window_end_valid = Qnil; | |
7bbb5782 | 1464 | p->frozen_window_start_p = 0; |
949cf20f | 1465 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1466 | |
1467 | p->next = tem = o->next; | |
265a9e55 | 1468 | if (!NILP (tem)) |
7ab12479 JB |
1469 | XWINDOW (tem)->prev = replacement; |
1470 | ||
1471 | p->prev = tem = o->prev; | |
265a9e55 | 1472 | if (!NILP (tem)) |
7ab12479 JB |
1473 | XWINDOW (tem)->next = replacement; |
1474 | ||
1475 | p->parent = tem = o->parent; | |
265a9e55 | 1476 | if (!NILP (tem)) |
7ab12479 JB |
1477 | { |
1478 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1479 | XWINDOW (tem)->vchild = replacement; | |
1480 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1481 | XWINDOW (tem)->hchild = replacement; | |
1482 | } | |
1483 | ||
1484 | /*** Here, if replacement is a vertical combination | |
1485 | and so is its new parent, we should make replacement's | |
1486 | children be children of that parent instead. ***/ | |
1487 | } | |
1488 | ||
a7ca3326 | 1489 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", |
8fef9de1 MR |
1490 | doc: /* Remove WINDOW from its frame. |
1491 | WINDOW defaults to the selected window. Return nil. | |
1492 | Signal an error when WINDOW is the only window on its frame. */) | |
5842a27b | 1493 | (register Lisp_Object window) |
543f5fb1 | 1494 | { |
eeca6f6f SM |
1495 | struct frame *f; |
1496 | if (NILP (window)) | |
1497 | window = selected_window; | |
dbf64827 JB |
1498 | else |
1499 | CHECK_LIVE_WINDOW (window); | |
1500 | ||
eeca6f6f | 1501 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
543f5fb1 RS |
1502 | delete_window (window); |
1503 | ||
eeca6f6f | 1504 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1505 | |
1506 | return Qnil; | |
1507 | } | |
1508 | ||
2f7c71a1 | 1509 | static void |
971de7fb | 1510 | delete_window (register Lisp_Object window) |
7ab12479 JB |
1511 | { |
1512 | register Lisp_Object tem, parent, sib; | |
1513 | register struct window *p; | |
1514 | register struct window *par; | |
951f9df5 | 1515 | struct frame *f; |
7ab12479 | 1516 | |
605be8af JB |
1517 | /* Because this function is called by other C code on non-leaf |
1518 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1519 | so we can't decode_window here. */ | |
eeca6f6f | 1520 | CHECK_WINDOW (window); |
7ab12479 | 1521 | p = XWINDOW (window); |
605be8af | 1522 | |
0d384044 | 1523 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1524 | if (NILP (p->buffer) |
1525 | && NILP (p->hchild) | |
1526 | && NILP (p->vchild)) | |
296b535c | 1527 | return; |
605be8af | 1528 | |
7ab12479 | 1529 | parent = p->parent; |
265a9e55 | 1530 | if (NILP (parent)) |
7ab12479 JB |
1531 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1532 | par = XWINDOW (parent); | |
1533 | ||
1534 | windows_or_buffers_changed++; | |
67492200 | 1535 | Vwindow_list = Qnil; |
951f9df5 GM |
1536 | f = XFRAME (WINDOW_FRAME (p)); |
1537 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1538 | |
605be8af JB |
1539 | /* Are we trying to delete any frame's selected window? */ |
1540 | { | |
192c3131 | 1541 | Lisp_Object swindow, pwindow; |
605be8af | 1542 | |
0def0403 RS |
1543 | /* See if the frame's selected window is either WINDOW |
1544 | or any subwindow of it, by finding all that window's parents | |
1545 | and comparing each one with WINDOW. */ | |
192c3131 | 1546 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1547 | |
192c3131 | 1548 | while (1) |
0def0403 | 1549 | { |
192c3131 RS |
1550 | pwindow = swindow; |
1551 | while (!NILP (pwindow)) | |
1552 | { | |
1553 | if (EQ (window, pwindow)) | |
1554 | break; | |
1555 | pwindow = XWINDOW (pwindow)->parent; | |
1556 | } | |
1557 | ||
1558 | /* If the window being deleted is not a parent of SWINDOW, | |
1559 | then SWINDOW is ok as the new selected window. */ | |
1560 | if (!EQ (window, pwindow)) | |
0def0403 | 1561 | break; |
192c3131 | 1562 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1563 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1564 | |
1565 | /* If we get back to the frame's selected window, | |
1566 | it means there was no acceptable alternative, | |
1567 | so we cannot delete. */ | |
1568 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1569 | error ("Cannot delete window"); | |
0def0403 RS |
1570 | } |
1571 | ||
192c3131 RS |
1572 | /* If we need to change SWINDOW, do it. */ |
1573 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1574 | { |
605be8af JB |
1575 | /* If we're about to delete the selected window on the |
1576 | selected frame, then we should use Fselect_window to select | |
1577 | the new window. On the other hand, if we're about to | |
1578 | delete the selected window on any other frame, we shouldn't do | |
1579 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1580 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1581 | Fselect_window (swindow, Qnil); |
605be8af | 1582 | else |
192c3131 | 1583 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1584 | } |
1585 | } | |
7ab12479 | 1586 | |
0d384044 RS |
1587 | /* Now we know we can delete this one. */ |
1588 | window_deletion_count++; | |
1589 | ||
7ab12479 JB |
1590 | tem = p->buffer; |
1591 | /* tem is null for dummy parent windows | |
1592 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1593 | if (!NILP (tem)) |
7ab12479 JB |
1594 | { |
1595 | unshow_buffer (p); | |
2d0834cc SM |
1596 | unchain_marker (XMARKER (p->pointm)); |
1597 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1598 | } |
1599 | ||
05e71564 GM |
1600 | /* Free window glyph matrices. It is sure that they are allocated |
1601 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1602 | events and other events that access glyph matrices are not | |
1603 | processed while we are changing them. */ | |
1604 | BLOCK_INPUT; | |
951f9df5 | 1605 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1606 | |
7ab12479 | 1607 | tem = p->next; |
265a9e55 | 1608 | if (!NILP (tem)) |
7ab12479 JB |
1609 | XWINDOW (tem)->prev = p->prev; |
1610 | ||
1611 | tem = p->prev; | |
265a9e55 | 1612 | if (!NILP (tem)) |
7ab12479 JB |
1613 | XWINDOW (tem)->next = p->next; |
1614 | ||
1615 | if (EQ (window, par->hchild)) | |
1616 | par->hchild = p->next; | |
1617 | if (EQ (window, par->vchild)) | |
1618 | par->vchild = p->next; | |
1619 | ||
1620 | /* Find one of our siblings to give our space to. */ | |
1621 | sib = p->prev; | |
265a9e55 | 1622 | if (NILP (sib)) |
7ab12479 JB |
1623 | { |
1624 | /* If p gives its space to its next sibling, that sibling needs | |
1625 | to have its top/left side pulled back to where p's is. | |
1626 | set_window_{height,width} will re-position the sibling's | |
1627 | children. */ | |
1628 | sib = p->next; | |
949cf20f KS |
1629 | XWINDOW (sib)->top_line = p->top_line; |
1630 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1631 | } |
1632 | ||
1633 | /* Stretch that sibling. */ | |
265a9e55 | 1634 | if (!NILP (par->vchild)) |
7ab12479 | 1635 | set_window_height (sib, |
949cf20f | 1636 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1637 | 1); |
265a9e55 | 1638 | if (!NILP (par->hchild)) |
7ab12479 | 1639 | set_window_width (sib, |
949cf20f | 1640 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1641 | 1); |
1642 | ||
1643 | /* If parent now has only one child, | |
1644 | put the child into the parent's place. */ | |
7ab12479 | 1645 | tem = par->hchild; |
265a9e55 | 1646 | if (NILP (tem)) |
7ab12479 | 1647 | tem = par->vchild; |
5494d7bc | 1648 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1649 | replace_window (parent, tem); |
5494d7bc JD |
1650 | par = XWINDOW (tem); |
1651 | } | |
605be8af JB |
1652 | |
1653 | /* Since we may be deleting combination windows, we must make sure that | |
1654 | not only p but all its children have been marked as deleted. */ | |
1655 | if (! NILP (p->hchild)) | |
1656 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1657 | else if (! NILP (p->vchild)) | |
1658 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1659 | ||
1660 | /* Mark this window as deleted. */ | |
1661 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1662 | |
5494d7bc JD |
1663 | if (! NILP (par->parent)) |
1664 | par = XWINDOW (par->parent); | |
1665 | ||
1666 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1667 | one of them. */ | |
ae12ecd7 | 1668 | |
5494d7bc JD |
1669 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1670 | { | |
1671 | p = XWINDOW (par->vchild); | |
1672 | par->vchild = p->vchild; | |
1673 | tem = p->vchild; | |
1674 | } | |
1675 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1676 | { | |
1677 | p = XWINDOW (par->hchild); | |
1678 | par->hchild = p->hchild; | |
1679 | tem = p->hchild; | |
1680 | } | |
1681 | else | |
1682 | p = 0; | |
1683 | ||
1684 | if (p) | |
1685 | { | |
1686 | while (! NILP (tem)) { | |
1687 | XWINDOW (tem)->parent = p->parent; | |
1688 | if (NILP (XWINDOW (tem)->next)) | |
1689 | break; | |
1690 | tem = XWINDOW (tem)->next; | |
1691 | } | |
1692 | if (! NILP (tem)) { | |
1693 | /* The next of the v/hchild we are removing is now the next of the | |
1694 | last child for the v/hchild: | |
1695 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1696 | | | |
1697 | -> next3 | |
1698 | After: v/hchild -> next1 -> next2 -> next3 | |
1699 | */ | |
1700 | XWINDOW (tem)->next = p->next; | |
1701 | if (! NILP (p->next)) | |
1702 | XWINDOW (p->next)->prev = tem; | |
1703 | } | |
1704 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1705 | } | |
1706 | ||
1707 | ||
5500c422 | 1708 | /* Adjust glyph matrices. */ |
951f9df5 | 1709 | adjust_glyphs (f); |
05e71564 | 1710 | UNBLOCK_INPUT; |
7ab12479 | 1711 | } |
67492200 GM |
1712 | |
1713 | ||
7ab12479 | 1714 | \f |
67492200 GM |
1715 | /*********************************************************************** |
1716 | Window List | |
1717 | ***********************************************************************/ | |
1718 | ||
f95464e4 GM |
1719 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1720 | pointer. This is a callback function for foreach_window, used in | |
1721 | function window_list. */ | |
67492200 GM |
1722 | |
1723 | static int | |
971de7fb | 1724 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 1725 | { |
f95464e4 | 1726 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1727 | Lisp_Object window; |
1728 | XSETWINDOW (window, w); | |
212116d6 | 1729 | *list = Fcons (window, *list); |
67492200 GM |
1730 | return 1; |
1731 | } | |
1732 | ||
1733 | ||
1734 | /* Return a list of all windows, for use by next_window. If | |
1735 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1736 | list, cache it in Vwindow_list, and return that. */ | |
1737 | ||
1738 | static Lisp_Object | |
971de7fb | 1739 | window_list (void) |
67492200 GM |
1740 | { |
1741 | if (!CONSP (Vwindow_list)) | |
1742 | { | |
1743 | Lisp_Object tail; | |
212116d6 | 1744 | |
67492200 GM |
1745 | Vwindow_list = Qnil; |
1746 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1747 | { |
1748 | Lisp_Object args[2]; | |
1749 | ||
1750 | /* We are visiting windows in canonical order, and add | |
1751 | new windows at the front of args[1], which means we | |
1752 | have to reverse this list at the end. */ | |
1753 | args[1] = Qnil; | |
1754 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1755 | args[0] = Vwindow_list; | |
1756 | args[1] = Fnreverse (args[1]); | |
1757 | Vwindow_list = Fnconc (2, args); | |
1758 | } | |
67492200 | 1759 | } |
177c0ea7 | 1760 | |
67492200 GM |
1761 | return Vwindow_list; |
1762 | } | |
1763 | ||
1764 | ||
118ea242 GM |
1765 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1766 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1767 | |
118ea242 GM |
1768 | MINIBUF t means WINDOW may be minibuffer windows. |
1769 | `lambda' means WINDOW may not be a minibuffer window. | |
1770 | a window means a specific minibuffer window | |
67492200 | 1771 | |
118ea242 GM |
1772 | ALL_FRAMES t means search all frames, |
1773 | nil means search just current frame, | |
aa248733 MS |
1774 | `visible' means search just visible frames on the |
1775 | current terminal, | |
1776 | 0 means search visible and iconified frames on the | |
1777 | current terminal, | |
118ea242 GM |
1778 | a window means search the frame that window belongs to, |
1779 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1780 | |
1781 | static int | |
971de7fb | 1782 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
1783 | { |
1784 | struct window *w = XWINDOW (window); | |
1785 | struct frame *f = XFRAME (w->frame); | |
1786 | int candidate_p = 1; | |
1787 | ||
1788 | if (!BUFFERP (w->buffer)) | |
1789 | candidate_p = 0; | |
1790 | else if (MINI_WINDOW_P (w) | |
1791 | && (EQ (minibuf, Qlambda) | |
1792 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1793 | { | |
1794 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1795 | If it is a window, consider only that one. */ | |
1796 | candidate_p = 0; | |
1797 | } | |
118ea242 GM |
1798 | else if (EQ (all_frames, Qt)) |
1799 | candidate_p = 1; | |
67492200 | 1800 | else if (NILP (all_frames)) |
118ea242 GM |
1801 | { |
1802 | xassert (WINDOWP (owindow)); | |
1803 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1804 | } | |
67492200 GM |
1805 | else if (EQ (all_frames, Qvisible)) |
1806 | { | |
1807 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1808 | candidate_p = FRAME_VISIBLE_P (f) |
1809 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1810 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1811 | ||
67492200 GM |
1812 | } |
1813 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1814 | { | |
1815 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1816 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1817 | #ifdef HAVE_X_WINDOWS | |
1818 | /* Yuck!! If we've just created the frame and the | |
1819 | window-manager requested the user to place it | |
1820 | manually, the window may still not be considered | |
1821 | `visible'. I'd argue it should be at least | |
1822 | something like `iconified', but don't know how to do | |
1823 | that yet. --Stef */ | |
1824 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1825 | && !f->output_data.x->has_been_visible) | |
1826 | #endif | |
de509a60 SM |
1827 | ) |
1828 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1829 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1830 | } |
67492200 GM |
1831 | else if (WINDOWP (all_frames)) |
1832 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1833 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1834 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1835 | else if (FRAMEP (all_frames)) |
1836 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1837 | |
1838 | return candidate_p; | |
1839 | } | |
1840 | ||
1841 | ||
1842 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
1843 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
1844 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
1845 | |
1846 | static void | |
971de7fb | 1847 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
1848 | { |
1849 | if (NILP (*window)) | |
1850 | *window = selected_window; | |
1851 | else | |
b7826503 | 1852 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1853 | |
67492200 GM |
1854 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1855 | does. */ | |
1856 | if (NILP (*minibuf)) | |
1857 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1858 | else if (!EQ (*minibuf, Qt)) | |
1859 | *minibuf = Qlambda; | |
177c0ea7 | 1860 | |
67492200 GM |
1861 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1862 | => count none of them, or a specific minibuffer window (the | |
1863 | active one) to count. */ | |
1864 | ||
1865 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1866 | if (NILP (*all_frames)) | |
1867 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1868 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1869 | : Qnil); | |
1870 | else if (EQ (*all_frames, Qvisible)) | |
1871 | ; | |
0f8fe9a2 | 1872 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1873 | ; |
1874 | else if (FRAMEP (*all_frames)) | |
1875 | ; | |
1876 | else if (!EQ (*all_frames, Qt)) | |
1877 | *all_frames = Qnil; | |
67492200 GM |
1878 | } |
1879 | ||
1880 | ||
ab6d1131 | 1881 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
1882 | of windows. NEXT_P non-zero means return the next window. See the |
1883 | documentation string of next-window for the meaning of MINIBUF and | |
1884 | ALL_FRAMES. */ | |
1885 | ||
1886 | static Lisp_Object | |
971de7fb | 1887 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
1888 | { |
1889 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1890 | |
67492200 GM |
1891 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1892 | return the first window on the frame. */ | |
1893 | if (FRAMEP (all_frames) | |
1894 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1895 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1896 | |
212116d6 | 1897 | if (next_p) |
67492200 GM |
1898 | { |
1899 | Lisp_Object list; | |
177c0ea7 | 1900 | |
67492200 GM |
1901 | /* Find WINDOW in the list of all windows. */ |
1902 | list = Fmemq (window, window_list ()); | |
1903 | ||
1904 | /* Scan forward from WINDOW to the end of the window list. */ | |
1905 | if (CONSP (list)) | |
1906 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1907 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1908 | break; |
1909 | ||
1910 | /* Scan from the start of the window list up to WINDOW. */ | |
1911 | if (!CONSP (list)) | |
1912 | for (list = Vwindow_list; | |
1913 | CONSP (list) && !EQ (XCAR (list), window); | |
1914 | list = XCDR (list)) | |
118ea242 | 1915 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1916 | break; |
1917 | ||
1918 | if (CONSP (list)) | |
1919 | window = XCAR (list); | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | Lisp_Object candidate, list; | |
177c0ea7 | 1924 | |
67492200 GM |
1925 | /* Scan through the list of windows for candidates. If there are |
1926 | candidate windows in front of WINDOW, the last one of these | |
1927 | is the one we want. If there are candidates following WINDOW | |
1928 | in the list, again the last one of these is the one we want. */ | |
1929 | candidate = Qnil; | |
1930 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1931 | { | |
1932 | if (EQ (XCAR (list), window)) | |
1933 | { | |
1934 | if (WINDOWP (candidate)) | |
1935 | break; | |
1936 | } | |
118ea242 GM |
1937 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1938 | all_frames)) | |
67492200 GM |
1939 | candidate = XCAR (list); |
1940 | } | |
1941 | ||
1942 | if (WINDOWP (candidate)) | |
1943 | window = candidate; | |
1944 | } | |
1945 | ||
1946 | return window; | |
1947 | } | |
7ab12479 | 1948 | |
7ab12479 | 1949 | |
a7ca3326 | 1950 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
1951 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
1952 | WINDOW defaults to the selected window. The optional arguments | |
1953 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 1954 | |
ab6d1131 MR |
1955 | MINIBUF t means consider the minibuffer window even if the |
1956 | minibuffer is not active. MINIBUF nil or omitted means consider | |
1957 | the minibuffer window only if the minibuffer is active. Any | |
1958 | other value means do not consider the minibuffer window even if | |
1959 | the minibuffer is active. | |
fdb82f93 PJ |
1960 | |
1961 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
1962 | is active, all windows on all frames that share that minibuffer |
1963 | are considered too. Therefore, if you are using a separate | |
1964 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
1965 | counts, `next-window' considers the windows in the frame from | |
1966 | which you entered the minibuffer, as well as the minibuffer | |
1967 | window. | |
1968 | ||
1969 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
1970 | frame, plus the minibuffer window if specified by the MINIBUF | |
1971 | argument, see above. If the minibuffer counts, consider all | |
1972 | windows on all frames that share that minibuffer too. | |
1973 | ALL-FRAMES t means consider all windows on all existing frames. | |
1974 | ALL-FRAMES `visible' means consider all windows on all visible | |
aa248733 | 1975 | frames on the current terminal. |
ab6d1131 | 1976 | ALL-FRAMES 0 means consider all windows on all visible and |
aa248733 | 1977 | iconified frames on the current terminal. |
ab6d1131 MR |
1978 | ALL-FRAMES a frame means consider all windows on that frame only. |
1979 | Anything else means consider all windows on WINDOW's frame and no | |
1980 | others. | |
fdb82f93 PJ |
1981 | |
1982 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1983 | `next-window' to iterate through the entire cycle of acceptable | |
1984 | windows, eventually ending up back at the window you started with. | |
1985 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 1986 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 1987 | { |
67492200 | 1988 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1989 | } |
1990 | ||
67492200 | 1991 | |
26f6279d | 1992 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
1993 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
1994 | WINDOW defaults to the selected window. The optional arguments | |
1995 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
1996 | For the precise meaning of these arguments see `next-window'. | |
1997 | ||
1998 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
1999 | use `previous-window' to iterate through the entire cycle of | |
2000 | acceptable windows, eventually ending up back at the window you | |
2001 | started with. `next-window' traverses the same cycle, in the | |
2002 | reverse order. */) | |
5842a27b | 2003 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2004 | { |
67492200 | 2005 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2006 | } |
2007 | ||
67492200 | 2008 | |
62c07cc7 | 2009 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2010 | doc: /* Select another window in cyclic ordering of windows. |
2011 | COUNT specifies the number of windows to skip, starting with the | |
2012 | selected window, before making the selection. If COUNT is | |
2013 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2014 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2015 | window, so select the selected window. In an interactive call, | |
2016 | COUNT is the numeric prefix argument. Return nil. | |
2017 | ||
2018 | This function uses `next-window' for finding the window to select. | |
2019 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2020 | but the MINIBUF argument of `next-window' is always effectively | |
2021 | nil. */) | |
5842a27b | 2022 | (Lisp_Object count, Lisp_Object all_frames) |
7ab12479 | 2023 | { |
67492200 GM |
2024 | Lisp_Object window; |
2025 | int i; | |
7ab12479 | 2026 | |
ab6d1131 | 2027 | CHECK_NUMBER (count); |
67492200 | 2028 | window = selected_window; |
177c0ea7 | 2029 | |
ab6d1131 | 2030 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2031 | window = Fnext_window (window, Qnil, all_frames); |
2032 | for (; i < 0; ++i) | |
2033 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2034 | |
14d87dc9 | 2035 | Fselect_window (window, Qnil); |
7ab12479 JB |
2036 | return Qnil; |
2037 | } | |
67492200 GM |
2038 | |
2039 | ||
2040 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2041 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2042 | FRAME nil or omitted means use the selected frame. | |
2043 | WINDOW nil or omitted means use the selected window. | |
2044 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2045 | MINIBUF nil or omitted means include the minibuffer window only | |
2046 | if it's active. | |
2047 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
5842a27b | 2048 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) |
cd2904bd | 2049 | { |
cd2904bd | 2050 | if (NILP (window)) |
acc6289a SM |
2051 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2052 | CHECK_WINDOW (window); | |
cd2904bd GM |
2053 | if (NILP (frame)) |
2054 | frame = selected_frame; | |
2055 | ||
2056 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2057 | error ("Window is on a different frame"); | |
2058 | ||
2059 | return window_list_1 (window, minibuf, frame); | |
2060 | } | |
2061 | ||
2062 | ||
ab6d1131 | 2063 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2064 | for `next-window'. */ |
2065 | ||
2066 | static Lisp_Object | |
971de7fb | 2067 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2068 | { |
403de3b4 | 2069 | Lisp_Object tail, list, rest; |
67492200 GM |
2070 | |
2071 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2072 | list = Qnil; | |
177c0ea7 | 2073 | |
67492200 | 2074 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2075 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2076 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2077 | |
403de3b4 RS |
2078 | /* Rotate the list to start with WINDOW. */ |
2079 | list = Fnreverse (list); | |
2080 | rest = Fmemq (window, list); | |
2081 | if (!NILP (rest) && !EQ (rest, list)) | |
2082 | { | |
1725a7c9 | 2083 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2084 | ; |
2085 | XSETCDR (tail, Qnil); | |
2086 | list = nconc2 (rest, list); | |
2087 | } | |
2088 | return list; | |
67492200 GM |
2089 | } |
2090 | ||
2091 | ||
7ab12479 JB |
2092 | \f |
2093 | /* Look at all windows, performing an operation specified by TYPE | |
2094 | with argument OBJ. | |
75d8f668 | 2095 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2096 | Qnil, look at just the selected frame; |
89bca612 | 2097 | Qvisible, look at visible frames; |
75d8f668 | 2098 | a frame, just look at windows on that frame. |
85fe3b5e | 2099 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2100 | |
2101 | enum window_loop | |
2102 | { | |
2103 | WINDOW_LOOP_UNUSED, | |
2104 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2105 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2106 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2107 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2108 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2109 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2110 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2111 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2112 | }; |
2113 | ||
2114 | static Lisp_Object | |
971de7fb | 2115 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2116 | { |
118ea242 GM |
2117 | Lisp_Object window, windows, best_window, frame_arg; |
2118 | struct frame *f; | |
ffdc852d | 2119 | struct gcpro gcpro1; |
177c0ea7 | 2120 | |
44fa5b1e JB |
2121 | /* If we're only looping through windows on a particular frame, |
2122 | frame points to that frame. If we're looping through windows | |
2123 | on all frames, frame is 0. */ | |
2124 | if (FRAMEP (frames)) | |
118ea242 | 2125 | f = XFRAME (frames); |
44fa5b1e | 2126 | else if (NILP (frames)) |
118ea242 | 2127 | f = SELECTED_FRAME (); |
7ab12479 | 2128 | else |
118ea242 | 2129 | f = NULL; |
177c0ea7 | 2130 | |
118ea242 | 2131 | if (f) |
89bca612 | 2132 | frame_arg = Qlambda; |
0f8fe9a2 | 2133 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2134 | frame_arg = frames; |
89bca612 RS |
2135 | else if (EQ (frames, Qvisible)) |
2136 | frame_arg = frames; | |
118ea242 GM |
2137 | else |
2138 | frame_arg = Qt; | |
7ab12479 | 2139 | |
89bca612 RS |
2140 | /* frame_arg is Qlambda to stick to one frame, |
2141 | Qvisible to consider all visible frames, | |
2142 | or Qt otherwise. */ | |
2143 | ||
7ab12479 | 2144 | /* Pick a window to start with. */ |
017b2bad | 2145 | if (WINDOWP (obj)) |
118ea242 GM |
2146 | window = obj; |
2147 | else if (f) | |
2148 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2149 | else |
118ea242 | 2150 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2151 | |
cd2904bd | 2152 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2153 | GCPRO1 (windows); |
7ab12479 | 2154 | best_window = Qnil; |
118ea242 | 2155 | |
e67a1dea | 2156 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2157 | { |
118ea242 | 2158 | struct window *w; |
177c0ea7 | 2159 | |
118ea242 GM |
2160 | window = XCAR (windows); |
2161 | w = XWINDOW (window); | |
177c0ea7 | 2162 | |
118ea242 GM |
2163 | /* Note that we do not pay attention here to whether the frame |
2164 | is visible, since Fwindow_list skips non-visible frames if | |
2165 | that is desired, under the control of frame_arg. */ | |
2166 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2167 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2168 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2169 | || (mini && minibuf_level > 0)) |
2170 | switch (type) | |
2171 | { | |
2172 | case GET_BUFFER_WINDOW: | |
118ea242 | 2173 | if (EQ (w->buffer, obj) |
5c204627 RS |
2174 | /* Don't find any minibuffer window |
2175 | except the one that is currently in use. */ | |
118ea242 GM |
2176 | && (MINI_WINDOW_P (w) |
2177 | ? EQ (window, minibuf_window) | |
2178 | : 1)) | |
2179 | { | |
5ddc1b75 GM |
2180 | if (NILP (best_window)) |
2181 | best_window = window; | |
2182 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2183 | /* Prefer to return selected-window. */ |
2184 | RETURN_UNGCPRO (window); | |
2185 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2186 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2187 | best_window = window; |
118ea242 | 2188 | } |
7ab12479 JB |
2189 | break; |
2190 | ||
2191 | case GET_LRU_WINDOW: | |
20b69789 SM |
2192 | /* `obj' is an integer encoding a bitvector. |
2193 | `obj & 1' means consider only full-width windows. | |
2194 | `obj & 2' means consider also dedicated windows. */ | |
2195 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2196 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2197 | /* Minibuffer windows are always ignored. */ |
2198 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2199 | break; |
265a9e55 | 2200 | if (NILP (best_window) |
7ab12479 | 2201 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2202 | > XFASTINT (w->use_time))) |
2203 | best_window = window; | |
7ab12479 JB |
2204 | break; |
2205 | ||
2206 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2207 | if (!EQ (window, obj)) |
2208 | Fdelete_window (window); | |
7ab12479 JB |
2209 | break; |
2210 | ||
2211 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2212 | if (EQ (w->buffer, obj)) |
7ab12479 | 2213 | { |
4554d213 | 2214 | struct frame *fr = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2215 | |
2216 | /* If this window is dedicated, and in a frame of its own, | |
2217 | kill the frame. */ | |
4554d213 | 2218 | if (EQ (window, FRAME_ROOT_WINDOW (fr)) |
118ea242 | 2219 | && !NILP (w->dedicated) |
4554d213 | 2220 | && other_visible_frames (fr)) |
7ab12479 | 2221 | { |
3548e138 RS |
2222 | /* Skip the other windows on this frame. |
2223 | There might be one, the minibuffer! */ | |
118ea242 GM |
2224 | while (CONSP (XCDR (windows)) |
2225 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2226 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2227 | windows = XCDR (windows); | |
177c0ea7 | 2228 | |
3548e138 | 2229 | /* Now we can safely delete the frame. */ |
56f2de10 | 2230 | delete_frame (w->frame, Qnil); |
118ea242 GM |
2231 | } |
2232 | else if (NILP (w->parent)) | |
2233 | { | |
2234 | /* If we're deleting the buffer displayed in the | |
2235 | only window on the frame, find a new buffer to | |
2236 | display there. */ | |
2237 | Lisp_Object buffer; | |
2238 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1c33c906 MR |
2239 | /* Reset dedicated state of window. */ |
2240 | w->dedicated = Qnil; | |
949cf20f | 2241 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2242 | if (EQ (window, selected_window)) |
2243 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2244 | } |
2245 | else | |
118ea242 | 2246 | Fdelete_window (window); |
7ab12479 JB |
2247 | } |
2248 | break; | |
2249 | ||
2250 | case GET_LARGEST_WINDOW: | |
20b69789 | 2251 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2252 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2253 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2254 | break; |
177c0ea7 | 2255 | |
c930dfab | 2256 | if (NILP (best_window)) |
118ea242 | 2257 | best_window = window; |
c930dfab GM |
2258 | else |
2259 | { | |
2260 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2261 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2262 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2263 | best_window = window; |
2264 | } | |
7ab12479 JB |
2265 | } |
2266 | break; | |
2267 | ||
2268 | case UNSHOW_BUFFER: | |
118ea242 | 2269 | if (EQ (w->buffer, obj)) |
7ab12479 | 2270 | { |
118ea242 | 2271 | Lisp_Object buffer; |
4554d213 | 2272 | struct frame *fr = XFRAME (w->frame); |
177c0ea7 | 2273 | |
7ab12479 | 2274 | /* Find another buffer to show in this window. */ |
118ea242 | 2275 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2276 | |
38ab08d1 RS |
2277 | /* If this window is dedicated, and in a frame of its own, |
2278 | kill the frame. */ | |
4554d213 | 2279 | if (EQ (window, FRAME_ROOT_WINDOW (fr)) |
118ea242 | 2280 | && !NILP (w->dedicated) |
4554d213 | 2281 | && other_visible_frames (fr)) |
45945a7b RS |
2282 | { |
2283 | /* Skip the other windows on this frame. | |
2284 | There might be one, the minibuffer! */ | |
118ea242 GM |
2285 | while (CONSP (XCDR (windows)) |
2286 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2287 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2288 | windows = XCDR (windows); | |
177c0ea7 | 2289 | |
45945a7b | 2290 | /* Now we can safely delete the frame. */ |
56f2de10 | 2291 | delete_frame (w->frame, Qnil); |
45945a7b | 2292 | } |
a5731348 SM |
2293 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2294 | { | |
4554d213 PE |
2295 | Lisp_Object window_to_delete; |
2296 | XSETWINDOW (window_to_delete, w); | |
a5731348 SM |
2297 | /* If this window is dedicated and not the only window |
2298 | in its frame, then kill it. */ | |
4554d213 | 2299 | Fdelete_window (window_to_delete); |
a5731348 | 2300 | } |
38ab08d1 | 2301 | else |
38ab08d1 RS |
2302 | { |
2303 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2304 | w->dedicated = Qnil; |
949cf20f | 2305 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2306 | if (EQ (window, selected_window)) |
2307 | Fset_buffer (w->buffer); | |
38ab08d1 | 2308 | } |
7ab12479 JB |
2309 | } |
2310 | break; | |
3f8ab7bd | 2311 | |
6b61353c KH |
2312 | case REDISPLAY_BUFFER_WINDOWS: |
2313 | if (EQ (w->buffer, obj)) | |
2314 | { | |
2315 | mark_window_display_accurate (window, 0); | |
2316 | w->update_mode_line = Qt; | |
2317 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2318 | ++update_mode_lines; | |
2319 | best_window = window; | |
2320 | } | |
2321 | break; | |
2322 | ||
3f8ab7bd RS |
2323 | /* Check for a window that has a killed buffer. */ |
2324 | case CHECK_ALL_WINDOWS: | |
118ea242 | 2325 | if (! NILP (w->buffer) |
4b4deea2 | 2326 | && NILP (BVAR (XBUFFER (w->buffer), name))) |
3f8ab7bd | 2327 | abort (); |
118ea242 | 2328 | break; |
6bbd7a29 GM |
2329 | |
2330 | case WINDOW_LOOP_UNUSED: | |
2331 | break; | |
7ab12479 | 2332 | } |
7ab12479 | 2333 | } |
7ab12479 | 2334 | |
118ea242 | 2335 | UNGCPRO; |
7ab12479 | 2336 | return best_window; |
37962e60 | 2337 | } |
605be8af | 2338 | |
3f8ab7bd RS |
2339 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2340 | ||
e3b27b31 | 2341 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2342 | void |
971de7fb | 2343 | check_all_windows (void) |
3f8ab7bd RS |
2344 | { |
2345 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2346 | } | |
2347 | ||
a048073e MR |
2348 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
2349 | doc: /* Return WINDOW's use time. | |
2350 | WINDOW defaults to the selected window. The window with the highest use | |
2351 | time is the most recently selected one. The window with the lowest use | |
2352 | time is the least recently selected one. */) | |
2353 | (Lisp_Object window) | |
2354 | { | |
2355 | return decode_window (window)->use_time; | |
2356 | } | |
2357 | ||
3cbb13c8 | 2358 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2359 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2360 | \(LRU means Least Recently Used.) |
2361 | ||
6b61353c | 2362 | Return a full-width window if possible. |
c2755926 | 2363 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2364 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2365 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2366 | If optional argument FRAME is `visible', search all visible frames. |
2367 | If FRAME is 0, search all visible and iconified frames. | |
2368 | If FRAME is t, search all frames. | |
2369 | If FRAME is nil, search only the selected frame. | |
2370 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2371 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 JB |
2372 | { |
2373 | register Lisp_Object w; | |
2374 | /* First try for a window that is full-width */ | |
20b69789 SM |
2375 | w = window_loop (GET_LRU_WINDOW, |
2376 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2377 | 0, frame); | |
265a9e55 | 2378 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2379 | return w; |
2380 | /* If none of them, try the rest */ | |
20b69789 SM |
2381 | return window_loop (GET_LRU_WINDOW, |
2382 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2383 | 0, frame); | |
7ab12479 JB |
2384 | } |
2385 | ||
3cbb13c8 | 2386 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2387 | doc: /* Return the largest window in area. |
c2755926 | 2388 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2389 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2390 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2391 | If optional argument FRAME is `visible', search all visible frames. |
2392 | If FRAME is 0, search all visible and iconified frames. | |
2393 | If FRAME is t, search all frames. | |
2394 | If FRAME is nil, search only the selected frame. | |
2395 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2396 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 | 2397 | { |
20b69789 | 2398 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2399 | frame); |
7ab12479 JB |
2400 | } |
2401 | ||
a7ca3326 | 2402 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 MR |
2403 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
2404 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the | |
2405 | current buffer. | |
fdb82f93 PJ |
2406 | If optional argument FRAME is `visible', search all visible frames. |
2407 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2408 | If FRAME is t, search all frames. | |
2409 | If FRAME is nil, search only the selected frame. | |
2410 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2411 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2412 | { |
fec89261 MR |
2413 | Lisp_Object buffer; |
2414 | ||
2415 | if (NILP (buffer_or_name)) | |
2416 | buffer = Fcurrent_buffer (); | |
2417 | else | |
2418 | buffer = Fget_buffer (buffer_or_name); | |
2419 | ||
017b2bad | 2420 | if (BUFFERP (buffer)) |
44fa5b1e | 2421 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2422 | else |
2423 | return Qnil; | |
2424 | } | |
2425 | ||
2426 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2427 | 0, 1, "", |
2428 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2429 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
2430 | This function tries to reduce display jumps by keeping the text |
2431 | previously visible in WINDOW in the same place on the frame. Doing this | |
2432 | depends on the value of (window-start WINDOW), so if calling this | |
2433 | function in a program gives strange scrolling, make sure the | |
2434 | window-start value is reasonable when this function is called. */) | |
5842a27b | 2435 | (Lisp_Object window) |
7ab12479 JB |
2436 | { |
2437 | struct window *w; | |
2452438f | 2438 | EMACS_INT startpos; |
85fe3b5e | 2439 | int top, new_top; |
7ab12479 | 2440 | |
265a9e55 | 2441 | if (NILP (window)) |
7ab12479 JB |
2442 | window = selected_window; |
2443 | else | |
b7826503 | 2444 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2445 | w = XWINDOW (window); |
a2b38b3c | 2446 | |
00d3d838 | 2447 | startpos = marker_position (w->start); |
949cf20f | 2448 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2449 | |
a2b38b3c RS |
2450 | if (MINI_WINDOW_P (w) && top > 0) |
2451 | error ("Can't expand minibuffer to full frame"); | |
2452 | ||
70728a80 | 2453 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2454 | |
00d3d838 KH |
2455 | /* Try to minimize scrolling, by setting the window start to the point |
2456 | will cause the text at the old window start to be at the same place | |
2457 | on the frame. But don't try to do this if the window start is | |
2458 | outside the visible portion (as might happen when the display is | |
2459 | not current, due to typeahead). */ | |
949cf20f | 2460 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2461 | if (new_top != top |
2462 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2463 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2464 | { | |
2465 | struct position pos; | |
2466 | struct buffer *obuf = current_buffer; | |
2467 | ||
2468 | Fset_buffer (w->buffer); | |
2469 | /* This computation used to temporarily move point, but that can | |
2470 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2471 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2472 | |
b73ea88e | 2473 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2474 | w->window_end_valid = Qnil; |
b73ea88e RS |
2475 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2476 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2477 | : Qnil); |
80622eec RS |
2478 | /* We need to do this, so that the window-scroll-functions |
2479 | get called. */ | |
4d047f50 | 2480 | w->optional_new_start = Qt; |
00d3d838 KH |
2481 | |
2482 | set_buffer_internal (obuf); | |
2483 | } | |
5500c422 | 2484 | |
7ab12479 JB |
2485 | return Qnil; |
2486 | } | |
2487 | ||
2488 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
2489 | 0, 2, "bDelete windows on (buffer): ", |
2490 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
2491 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2492 | defaults to the current buffer. | |
2493 | ||
fdb82f93 PJ |
2494 | Optional second argument FRAME controls which frames are affected. |
2495 | If optional argument FRAME is `visible', search all visible frames. | |
2496 | If FRAME is 0, search all visible and iconified frames. | |
2497 | If FRAME is nil, search all frames. | |
2498 | If FRAME is t, search only the selected frame. | |
d653c8cc | 2499 | If FRAME is a frame, search only that frame. |
fec89261 MR |
2500 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
2501 | its frame, that frame is deleted when there are other frames left. */) | |
5842a27b | 2502 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2503 | { |
fec89261 MR |
2504 | Lisp_Object buffer; |
2505 | ||
26f6279d JB |
2506 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2507 | expects. */ | |
c520265e RS |
2508 | if (NILP (frame)) |
2509 | frame = Qt; | |
2510 | else if (EQ (frame, Qt)) | |
2511 | frame = Qnil; | |
26f6279d | 2512 | |
fec89261 MR |
2513 | if (NILP (buffer_or_name)) |
2514 | buffer = Fcurrent_buffer (); | |
2515 | else | |
7ab12479 | 2516 | { |
fec89261 | 2517 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2518 | CHECK_BUFFER (buffer); |
7ab12479 | 2519 | } |
177c0ea7 | 2520 | |
fec89261 MR |
2521 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
2522 | ||
7ab12479 JB |
2523 | return Qnil; |
2524 | } | |
2525 | ||
2526 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 2527 | Sreplace_buffer_in_windows, |
fec89261 MR |
2528 | 0, 1, "bReplace buffer in windows: ", |
2529 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
2530 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2531 | defaults to the current buffer. | |
2532 | ||
2533 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
2534 | deleted. If that window is the only window on its frame, that frame is | |
2535 | deleted too when there are other frames left. If there are no other | |
2536 | frames left, some other buffer is displayed in that window. */) | |
5842a27b | 2537 | (Lisp_Object buffer_or_name) |
fec89261 MR |
2538 | { |
2539 | Lisp_Object buffer; | |
2540 | ||
2541 | if (NILP (buffer_or_name)) | |
2542 | buffer = Fcurrent_buffer (); | |
2543 | else | |
7ab12479 | 2544 | { |
fec89261 | 2545 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2546 | CHECK_BUFFER (buffer); |
7ab12479 | 2547 | } |
fec89261 MR |
2548 | |
2549 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2550 | ||
7ab12479 JB |
2551 | return Qnil; |
2552 | } | |
ff58478b RS |
2553 | |
2554 | /* Replace BUFFER with some other buffer in all windows | |
2555 | of all frames, even those on other keyboards. */ | |
2556 | ||
2557 | void | |
971de7fb | 2558 | replace_buffer_in_all_windows (Lisp_Object buffer) |
ff58478b RS |
2559 | { |
2560 | Lisp_Object tail, frame; | |
2561 | ||
ff58478b RS |
2562 | /* A single call to window_loop won't do the job |
2563 | because it only considers frames on the current keyboard. | |
2564 | So loop manually over frames, and handle each one. */ | |
2565 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2566 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2567 | } |
7ab12479 JB |
2568 | \f |
2569 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2570 | |
2571 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2572 | might crash Emacs. */ | |
5500c422 | 2573 | |
a481b3ea | 2574 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2575 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2576 | |
047aaeb9 MR |
2577 | /* For wp non-zero the total number of columns of window w. Otherwise |
2578 | the total number of lines of w. */ | |
a481b3ea | 2579 | |
047aaeb9 MR |
2580 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2581 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2582 | |
2583 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2584 | minimum allowable size. */ | |
5500c422 | 2585 | |
605be8af | 2586 | void |
971de7fb | 2587 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2588 | { |
628df3bf | 2589 | /* For height, we have to see: |
54b8bcb5 RS |
2590 | how many windows the frame has at minimum (one or two), |
2591 | and whether it has a menu bar or other special stuff at the top. */ | |
2592 | int min_height | |
2593 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2594 | ? MIN_SAFE_WINDOW_HEIGHT | |
2595 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2596 | |
5500c422 GM |
2597 | if (FRAME_TOP_MARGIN (frame) > 0) |
2598 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2599 | |
2600 | if (*rows < min_height) | |
2601 | *rows = min_height; | |
2602 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2603 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2604 | } | |
2605 | ||
233a4a2c GM |
2606 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2607 | check if W's width can be changed, otherwise check W's height. | |
2608 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2609 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2610 | either. */ | |
c1636aa6 | 2611 | |
233a4a2c | 2612 | static int |
971de7fb | 2613 | window_fixed_size_p (struct window *w, int width_p, int check_siblings_p) |
233a4a2c GM |
2614 | { |
2615 | int fixed_p; | |
2616 | struct window *c; | |
177c0ea7 | 2617 | |
233a4a2c GM |
2618 | if (!NILP (w->hchild)) |
2619 | { | |
2620 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2621 | |
233a4a2c GM |
2622 | if (width_p) |
2623 | { | |
047aaeb9 | 2624 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2625 | children are. */ |
2626 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2627 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2628 | fixed_p = c == NULL; | |
2629 | } | |
2630 | else | |
2631 | { | |
047aaeb9 | 2632 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2633 | children is. */ |
2634 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2635 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2636 | fixed_p = c != NULL; | |
2637 | } | |
2638 | } | |
2639 | else if (!NILP (w->vchild)) | |
2640 | { | |
2641 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2642 | |
233a4a2c GM |
2643 | if (width_p) |
2644 | { | |
047aaeb9 | 2645 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2646 | children is. */ |
2647 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2648 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2649 | fixed_p = c != NULL; | |
2650 | } | |
2651 | else | |
2652 | { | |
047aaeb9 | 2653 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2654 | children are. */ |
2655 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2656 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2657 | fixed_p = c == NULL; | |
2658 | } | |
2659 | } | |
2660 | else if (BUFFERP (w->buffer)) | |
2661 | { | |
3df0580e AS |
2662 | struct buffer *old = current_buffer; |
2663 | Lisp_Object val; | |
177c0ea7 | 2664 | |
3df0580e AS |
2665 | current_buffer = XBUFFER (w->buffer); |
2666 | val = find_symbol_value (Qwindow_size_fixed); | |
2667 | current_buffer = old; | |
a34dfd12 | 2668 | |
3df0580e AS |
2669 | fixed_p = 0; |
2670 | if (!EQ (val, Qunbound)) | |
2671 | { | |
2672 | fixed_p = !NILP (val); | |
177c0ea7 | 2673 | |
3df0580e AS |
2674 | if (fixed_p |
2675 | && ((EQ (val, Qheight) && width_p) | |
2676 | || (EQ (val, Qwidth) && !width_p))) | |
2677 | fixed_p = 0; | |
233a4a2c GM |
2678 | } |
2679 | ||
2680 | /* Can't tell if this one is resizable without looking at | |
2681 | siblings. If all siblings are fixed-size this one is too. */ | |
2682 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2683 | { | |
2684 | Lisp_Object child; | |
177c0ea7 | 2685 | |
9beb8baa | 2686 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2687 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2688 | break; | |
2689 | ||
2690 | if (NILP (child)) | |
9beb8baa | 2691 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2692 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2693 | break; | |
2694 | ||
2695 | if (NILP (child)) | |
2696 | fixed_p = 1; | |
2697 | } | |
2698 | } | |
2699 | else | |
2700 | fixed_p = 1; | |
2701 | ||
2702 | return fixed_p; | |
2703 | } | |
177c0ea7 | 2704 | |
047aaeb9 MR |
2705 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2706 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2707 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2708 | return values that won't crash Emacs and don't hide components like | |
2709 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2710 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2711 | |
2712 | static int | |
971de7fb | 2713 | window_min_size_2 (struct window *w, int width_p, int safe_p) |
f1de8c77 | 2714 | { |
047aaeb9 MR |
2715 | /* We should consider buffer-local values of window_min_height and |
2716 | window_min_width here. */ | |
f1de8c77 | 2717 | if (width_p) |
047aaeb9 MR |
2718 | { |
2719 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 2720 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2721 | + WINDOW_SCROLL_BAR_COLS (w)); |
2722 | ||
2723 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2724 | } | |
f1de8c77 | 2725 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2726 | return 1; |
f1de8c77 | 2727 | else |
047aaeb9 MR |
2728 | { |
2729 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2730 | + ((BUFFERP (w->buffer) | |
4b4deea2 | 2731 | && !NILP (BVAR (XBUFFER (w->buffer), mode_line_format))) |
047aaeb9 | 2732 | ? 1 : 0)); |
f1de8c77 | 2733 | |
047aaeb9 MR |
2734 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2735 | } | |
f1de8c77 | 2736 | } |
233a4a2c | 2737 | |
047aaeb9 MR |
2738 | /* Return minimum size of window W, not taking fixed-width windows into |
2739 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2740 | return the minimum height. SAFE_P non-zero means ignore | |
2741 | window-min-height|width but just return values that won't crash Emacs | |
2742 | and don't hide components like fringes, scrollbars, or modelines. If | |
2743 | W is a combination window, compute the minimum size from the minimum | |
2744 | sizes of W's children. */ | |
233a4a2c GM |
2745 | |
2746 | static int | |
971de7fb | 2747 | window_min_size_1 (struct window *w, int width_p, int safe_p) |
c1636aa6 | 2748 | { |
233a4a2c | 2749 | struct window *c; |
c1636aa6 | 2750 | int size; |
177c0ea7 | 2751 | |
233a4a2c GM |
2752 | if (!NILP (w->hchild)) |
2753 | { | |
047aaeb9 | 2754 | /* W is a horizontal combination. */ |
233a4a2c GM |
2755 | c = XWINDOW (w->hchild); |
2756 | size = 0; | |
177c0ea7 | 2757 | |
233a4a2c GM |
2758 | if (width_p) |
2759 | { | |
047aaeb9 MR |
2760 | /* The minimum width of a horizontal combination is the sum of |
2761 | the minimum widths of its children. */ | |
233a4a2c GM |
2762 | while (c) |
2763 | { | |
047aaeb9 | 2764 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2765 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2766 | } | |
2767 | } | |
2768 | else | |
2769 | { | |
047aaeb9 MR |
2770 | /* The minimum height of a horizontal combination is the |
2771 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2772 | while (c) |
2773 | { | |
047aaeb9 | 2774 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2775 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2776 | } | |
2777 | } | |
2778 | } | |
2779 | else if (!NILP (w->vchild)) | |
2780 | { | |
047aaeb9 | 2781 | /* W is a vertical combination. */ |
233a4a2c GM |
2782 | c = XWINDOW (w->vchild); |
2783 | size = 0; | |
177c0ea7 | 2784 | |
233a4a2c GM |
2785 | if (width_p) |
2786 | { | |
047aaeb9 MR |
2787 | /* The minimum width of a vertical combination is the maximum |
2788 | of the minimum widths of its children. */ | |
233a4a2c GM |
2789 | while (c) |
2790 | { | |
047aaeb9 | 2791 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2792 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2793 | } | |
2794 | } | |
2795 | else | |
2796 | { | |
047aaeb9 MR |
2797 | /* The minimum height of a vertical combination is the sum of |
2798 | the minimum height of its children. */ | |
233a4a2c GM |
2799 | while (c) |
2800 | { | |
047aaeb9 | 2801 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2802 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2803 | } | |
2804 | } | |
2805 | } | |
c1636aa6 | 2806 | else |
047aaeb9 MR |
2807 | /* W is a leaf window. */ |
2808 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2809 | |
2810 | return size; | |
2811 | } | |
2812 | ||
233a4a2c | 2813 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2814 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2815 | return the minimum height. SAFE_P non-zero means ignore | |
2816 | window-min-height|width but just return values that won't crash Emacs | |
2817 | and don't hide components like fringes, scrollbars, or modelines. | |
2818 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2819 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2820 | |
233a4a2c | 2821 | static int |
971de7fb | 2822 | window_min_size (struct window *w, int width_p, int safe_p, int ignore_fixed_p, int *fixed) |
233a4a2c GM |
2823 | { |
2824 | int size, fixed_p; | |
2825 | ||
f984d4fc GM |
2826 | if (ignore_fixed_p) |
2827 | fixed_p = 0; | |
2828 | else | |
2829 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2830 | |
233a4a2c GM |
2831 | if (fixed) |
2832 | *fixed = fixed_p; | |
177c0ea7 | 2833 | |
233a4a2c | 2834 | if (fixed_p) |
047aaeb9 | 2835 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2836 | else |
047aaeb9 | 2837 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2838 | |
233a4a2c GM |
2839 | return size; |
2840 | } | |
2841 | ||
2842 | ||
79fd290e | 2843 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2844 | Return 1 if window width is ok after adjustment; 0 if window |
2845 | is still too narrow. */ | |
2846 | ||
2847 | static int | |
971de7fb | 2848 | adjust_window_margins (struct window *w) |
949cf20f KS |
2849 | { |
2850 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2851 | - WINDOW_FRINGE_COLS (w) | |
2852 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2853 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2854 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2855 | ||
2856 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2857 | return 1; | |
2858 | ||
2859 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2860 | return 0; | |
2861 | ||
2862 | /* Window's text area is too narrow, but reducing the window | |
2863 | margins will fix that. */ | |
2864 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2865 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2866 | { | |
2867 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2868 | w->left_margin_cols = w->right_margin_cols | |
2869 | = make_number (margin_cols/2); | |
2870 | else | |
2871 | w->right_margin_cols = make_number (margin_cols); | |
2872 | } | |
2873 | else | |
2874 | w->left_margin_cols = make_number (margin_cols); | |
2875 | return 1; | |
2876 | } | |
2877 | ||
047aaeb9 MR |
2878 | /* Calculate new sizes for windows in the list FORWARD when their |
2879 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
2880 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
2881 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
2882 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
2883 | shrink columns, otherwise shrink lines. | |
6b61353c | 2884 | |
047aaeb9 MR |
2885 | SAFE_P zero means windows may be sized down to window-min-height |
2886 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
2887 | non-zero means windows may be sized down to their minimum safe sizes | |
2888 | taking into account the space needed to display modelines, fringes, | |
2889 | and scrollbars. | |
6b61353c | 2890 | |
047aaeb9 MR |
2891 | This function returns an allocated array of new sizes that the caller |
2892 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
2893 | zero. A size zero means the window shall be deleted. Array index 0 | |
2894 | refers to the first window in FORWARD, 1 to the second, and so on. | |
2895 | ||
2896 | This function resizes windows proportionally to their size. It also | |
2897 | tries to preserve smaller windows by resizing larger windows before | |
2898 | resizing any window to zero. If resize_proportionally is non-nil for | |
2899 | a specific window, it will attempt to strictly resize that window | |
2900 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 2901 | static int * |
ed3751c8 | 2902 | shrink_windows (int total, int size, int nchildren, int shrinkable, |
dd4c5104 | 2903 | int resize_fixed_p, Lisp_Object forward, int width_p, int safe_p) |
6b61353c KH |
2904 | { |
2905 | int available_resize = 0; | |
047aaeb9 | 2906 | int *new_sizes, *min_sizes; |
6b61353c KH |
2907 | struct window *c; |
2908 | Lisp_Object child; | |
2909 | int smallest = total; | |
2910 | int total_removed = 0; | |
2911 | int total_shrink = total - size; | |
2912 | int i; | |
2913 | ||
2914 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 2915 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
2916 | |
2917 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2918 | { | |
2919 | int child_size; | |
2920 | ||
2921 | c = XWINDOW (child); | |
047aaeb9 | 2922 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 2923 | |
047aaeb9 | 2924 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
2925 | new_sizes[i] = -1; |
2926 | else | |
2927 | { | |
2928 | new_sizes[i] = child_size; | |
047aaeb9 MR |
2929 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
2930 | if (child_size > min_sizes[i] | |
2931 | && NILP (c->resize_proportionally)) | |
2932 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
2933 | } |
2934 | } | |
2935 | /* We might need to shrink some windows to zero. Find the smallest | |
2936 | windows and set them to 0 until we can fulfil the new size. */ | |
2937 | ||
2938 | while (shrinkable > 1 && size + available_resize < total) | |
2939 | { | |
2940 | for (i = 0; i < nchildren; ++i) | |
2941 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2942 | smallest = new_sizes[i]; | |
2943 | ||
2944 | for (i = 0; i < nchildren; ++i) | |
2945 | if (new_sizes[i] == smallest) | |
2946 | { | |
2947 | /* Resize this window down to zero. */ | |
2948 | new_sizes[i] = 0; | |
047aaeb9 MR |
2949 | if (smallest > min_sizes[i]) |
2950 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
2951 | available_resize += smallest; |
2952 | --shrinkable; | |
2953 | total_removed += smallest; | |
2954 | ||
ef614e04 JD |
2955 | /* We don't know what the smallest is now. */ |
2956 | smallest = total; | |
2957 | ||
6b61353c KH |
2958 | /* Out of for, just remove one window at the time and |
2959 | check again if we have enough space. */ | |
2960 | break; | |
2961 | } | |
2962 | } | |
2963 | ||
2964 | /* Now, calculate the new sizes. Try to shrink each window | |
2965 | proportional to its size. */ | |
2966 | for (i = 0; i < nchildren; ++i) | |
2967 | { | |
047aaeb9 | 2968 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 2969 | { |
047aaeb9 MR |
2970 | int to_shrink = total_shrink * new_sizes[i] / total; |
2971 | ||
2972 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
2973 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
2974 | new_sizes[i] -= to_shrink; |
2975 | total_removed += to_shrink; | |
2976 | } | |
2977 | } | |
2978 | ||
2979 | /* Any reminder due to rounding, we just subtract from windows | |
2980 | that are left and still can be shrunk. */ | |
2981 | while (total_shrink > total_removed) | |
2982 | { | |
ef614e04 | 2983 | int nonzero_sizes = 0; |
ef614e04 JD |
2984 | |
2985 | for (i = 0; i < nchildren; ++i) | |
2986 | if (new_sizes[i] > 0) | |
c499e557 | 2987 | ++nonzero_sizes; |
c49a0495 | 2988 | |
6b61353c | 2989 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 2990 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
2991 | { |
2992 | --new_sizes[i]; | |
2993 | ++total_removed; | |
2994 | ||
2995 | /* Out of for, just shrink one window at the time and | |
2996 | check again if we have enough space. */ | |
2997 | break; | |
2998 | } | |
ef614e04 | 2999 | |
ef614e04 JD |
3000 | /* Special case, only one window left. */ |
3001 | if (nonzero_sizes == 1) | |
3002 | break; | |
3003 | } | |
3004 | ||
3005 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3006 | while (total_shrink < total_removed) | |
3007 | { | |
3008 | for (i = 0; i < nchildren; ++i) | |
3009 | { | |
3010 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3011 | { | |
3012 | ++new_sizes[i]; | |
3013 | --total_removed; | |
3014 | break; | |
3015 | } | |
3016 | } | |
6b61353c KH |
3017 | } |
3018 | ||
047aaeb9 MR |
3019 | xfree (min_sizes); |
3020 | ||
6b61353c KH |
3021 | return new_sizes; |
3022 | } | |
949cf20f | 3023 | |
233a4a2c | 3024 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3025 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3026 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3027 | |
3028 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3029 | they are in series. If LAST_ONLY is 1, change only the last of | |
3030 | WINDOW's children when they are in series. | |
3031 | ||
3032 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3033 | windows that become too small unless NODELETE_P is 1. When |
3034 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3035 | window-min-width when resizing windows but use safe defaults instead. | |
3036 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3037 | |
3038 | static void | |
971de7fb | 3039 | size_window (Lisp_Object window, int size, int width_p, int nodelete_p, int first_only, int last_only) |
7ab12479 | 3040 | { |
233a4a2c GM |
3041 | struct window *w = XWINDOW (window); |
3042 | struct window *c; | |
3043 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3044 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3045 | |
7ae2f10f | 3046 | size = max (0, size); |
177c0ea7 | 3047 | |
047aaeb9 MR |
3048 | /* Delete WINDOW if it's too small. */ |
3049 | if (nodelete_p != 1 && !NILP (w->parent) | |
3050 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3051 | { |
047aaeb9 MR |
3052 | delete_window (window); |
3053 | return; | |
7ab12479 JB |
3054 | } |
3055 | ||
233a4a2c | 3056 | /* Set redisplay hints. */ |
7ae2f10f GM |
3057 | w->last_modified = make_number (0); |
3058 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3059 | windows_or_buffers_changed++; |
7ae2f10f | 3060 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3061 | |
233a4a2c GM |
3062 | if (width_p) |
3063 | { | |
3064 | sideward = &w->vchild; | |
3065 | forward = &w->hchild; | |
949cf20f KS |
3066 | w->total_cols = make_number (size); |
3067 | adjust_window_margins (w); | |
233a4a2c GM |
3068 | } |
3069 | else | |
3070 | { | |
3071 | sideward = &w->hchild; | |
3072 | forward = &w->vchild; | |
949cf20f KS |
3073 | w->total_lines = make_number (size); |
3074 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3075 | } |
3076 | ||
3077 | if (!NILP (*sideward)) | |
7ab12479 | 3078 | { |
5fe0b054 | 3079 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3080 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3081 | { |
233a4a2c GM |
3082 | c = XWINDOW (child); |
3083 | if (width_p) | |
949cf20f | 3084 | c->left_col = w->left_col; |
233a4a2c | 3085 | else |
949cf20f | 3086 | c->top_line = w->top_line; |
5fe0b054 RS |
3087 | size_window (child, size, width_p, nodelete_p, |
3088 | first_only, last_only); | |
7ab12479 JB |
3089 | } |
3090 | } | |
5fe0b054 RS |
3091 | else if (!NILP (*forward) && last_only) |
3092 | { | |
3093 | /* Change the last in a series of siblings. */ | |
3094 | Lisp_Object last_child; | |
3095 | int child_size; | |
3096 | ||
3097 | for (child = *forward; !NILP (child); child = c->next) | |
3098 | { | |
3099 | c = XWINDOW (child); | |
3100 | last_child = child; | |
3101 | } | |
3102 | ||
047aaeb9 MR |
3103 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3104 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3105 | width_p, nodelete_p, first_only, last_only); |
3106 | } | |
3107 | else if (!NILP (*forward) && first_only) | |
3108 | { | |
3109 | /* Change the first in a series of siblings. */ | |
3110 | int child_size; | |
3111 | ||
3112 | child = *forward; | |
3113 | c = XWINDOW (child); | |
3114 | ||
3115 | if (width_p) | |
3116 | c->left_col = w->left_col; | |
3117 | else | |
3118 | c->top_line = w->top_line; | |
3119 | ||
047aaeb9 MR |
3120 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3121 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3122 | width_p, nodelete_p, first_only, last_only); |
3123 | } | |
233a4a2c | 3124 | else if (!NILP (*forward)) |
7ab12479 | 3125 | { |
d6550a9f | 3126 | int fixed_size, each IF_LINT (= 0), extra IF_LINT (= 0), n; |
233a4a2c | 3127 | int resize_fixed_p, nfixed; |
8b6d9dc9 | 3128 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3129 | int *new_sizes = NULL; |
233a4a2c | 3130 | |
5fe0b054 | 3131 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3132 | number of child windows. */ |
8b6d9dc9 | 3133 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3134 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3135 | { |
8b6d9dc9 | 3136 | int child_size; |
177c0ea7 | 3137 | |
7ab12479 | 3138 | c = XWINDOW (child); |
047aaeb9 | 3139 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3140 | total += child_size; |
177c0ea7 | 3141 | |
233a4a2c GM |
3142 | if (window_fixed_size_p (c, width_p, 0)) |
3143 | { | |
8b6d9dc9 | 3144 | fixed_size += child_size; |
233a4a2c GM |
3145 | ++nfixed; |
3146 | } | |
3147 | } | |
7ab12479 | 3148 | |
233a4a2c GM |
3149 | /* If the new size is smaller than fixed_size, or if there |
3150 | aren't any resizable windows, allow resizing fixed-size | |
3151 | windows. */ | |
3152 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3153 | ||
6b61353c | 3154 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3155 | value of extra takes care of rounding errors. */ |
3156 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3157 | if (size < total && n > 1) |
047aaeb9 MR |
3158 | new_sizes = shrink_windows (total, size, nchildren, n, |
3159 | resize_fixed_p, *forward, width_p, | |
3160 | nodelete_p == 2); | |
6b61353c KH |
3161 | else |
3162 | { | |
3163 | each = (size - total) / n; | |
3164 | extra = (size - total) - n * each; | |
3165 | } | |
233a4a2c GM |
3166 | |
3167 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3168 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3169 | last_pos = first_pos; |
6b61353c | 3170 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c | 3171 | { |
4554d213 | 3172 | int new_child_size, old_child_size; |
177c0ea7 | 3173 | |
233a4a2c | 3174 | c = XWINDOW (child); |
4554d213 PE |
3175 | old_child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3176 | new_child_size = old_child_size; | |
7ab12479 | 3177 | |
233a4a2c GM |
3178 | /* The top or left edge position of this child equals the |
3179 | bottom or right edge of its predecessor. */ | |
3180 | if (width_p) | |
949cf20f | 3181 | c->left_col = make_number (last_pos); |
233a4a2c | 3182 | else |
949cf20f | 3183 | c->top_line = make_number (last_pos); |
7ab12479 | 3184 | |
233a4a2c GM |
3185 | /* If this child can be resized, do it. */ |
3186 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3187 | { | |
4554d213 PE |
3188 | new_child_size = |
3189 | new_sizes ? new_sizes[n] : old_child_size + each + extra; | |
233a4a2c GM |
3190 | extra = 0; |
3191 | } | |
177c0ea7 | 3192 | |
047aaeb9 | 3193 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3194 | edge positions to children, so it's not a no-op if we |
3195 | didn't change the child's size. */ | |
4554d213 PE |
3196 | size_window (child, new_child_size, width_p, 1, |
3197 | first_only, last_only); | |
233a4a2c GM |
3198 | |
3199 | /* Remember the bottom/right edge position of this child; it | |
3200 | will be used to set the top/left edge of the next child. */ | |
4554d213 | 3201 | last_pos += new_child_size; |
7ab12479 | 3202 | } |
233a4a2c | 3203 | |
70fdbb46 | 3204 | xfree (new_sizes); |
6b61353c | 3205 | |
233a4a2c GM |
3206 | /* We should have covered the parent exactly with child windows. */ |
3207 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3208 | |
7ab12479 | 3209 | /* Now delete any children that became too small. */ |
047aaeb9 | 3210 | if (nodelete_p != 1) |
233a4a2c | 3211 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3212 | { |
233a4a2c | 3213 | int child_size; |
047aaeb9 | 3214 | |
233a4a2c | 3215 | c = XWINDOW (child); |
047aaeb9 MR |
3216 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3217 | size_window (child, child_size, width_p, nodelete_p, | |
3218 | first_only, last_only); | |
7ab12479 JB |
3219 | } |
3220 | } | |
3221 | } | |
3222 | ||
233a4a2c | 3223 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3224 | WINDOW's children. NODELETE zero means windows that have become |
3225 | smaller than window-min-height in the process may be deleted. | |
3226 | NODELETE 1 means never delete windows that become too small in the | |
3227 | process. (The caller should check later and do so if appropriate.) | |
3228 | NODELETE 2 means delete only windows that have become too small to be | |
3229 | displayed correctly. */ | |
7ab12479 | 3230 | |
5e14b1fc | 3231 | void |
971de7fb | 3232 | set_window_height (Lisp_Object window, int height, int nodelete) |
7ab12479 | 3233 | { |
5fe0b054 | 3234 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3235 | } |
7ab12479 | 3236 | |
233a4a2c | 3237 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3238 | WINDOW's children. NODELETE zero means windows that have become |
3239 | smaller than window-min-width in the process may be deleted. | |
3240 | NODELETE 1 means never delete windows that become too small in the | |
3241 | process. (The caller should check later and do so if appropriate.) | |
3242 | NODELETE 2 means delete only windows that have become too small to be | |
3243 | displayed correctly. */ | |
7ab12479 | 3244 | |
233a4a2c | 3245 | void |
971de7fb | 3246 | set_window_width (Lisp_Object window, int width, int nodelete) |
233a4a2c | 3247 | { |
5fe0b054 | 3248 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3249 | } |
233a4a2c | 3250 | |
cdbc7fec KS |
3251 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3252 | ||
3253 | void | |
971de7fb | 3254 | change_window_heights (Lisp_Object window, int n) |
cdbc7fec KS |
3255 | { |
3256 | struct window *w = XWINDOW (window); | |
3257 | ||
949cf20f KS |
3258 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3259 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3260 | |
949cf20f KS |
3261 | if (INTEGERP (w->orig_top_line)) |
3262 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3263 | if (INTEGERP (w->orig_total_lines)) | |
3264 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3265 | |
3266 | /* Handle just the top child in a vertical split. */ | |
3267 | if (!NILP (w->vchild)) | |
3268 | change_window_heights (w->vchild, n); | |
3269 | ||
3270 | /* Adjust all children in a horizontal split. */ | |
3271 | for (window = w->hchild; !NILP (window); window = w->next) | |
3272 | { | |
3273 | w = XWINDOW (window); | |
3274 | change_window_heights (window, n); | |
3275 | } | |
3276 | } | |
3277 | ||
7ab12479 | 3278 | \f |
1d8d96fa | 3279 | int window_select_count; |
7ab12479 | 3280 | |
cd64ea1d PE |
3281 | static Lisp_Object Fset_window_margins (Lisp_Object, Lisp_Object, Lisp_Object); |
3282 | static Lisp_Object Fset_window_fringes (Lisp_Object, Lisp_Object, Lisp_Object, | |
3283 | Lisp_Object); | |
3284 | static Lisp_Object Fset_window_scroll_bars (Lisp_Object, Lisp_Object, | |
3285 | Lisp_Object, Lisp_Object); | |
3286 | static Lisp_Object Fset_window_vscroll (Lisp_Object, Lisp_Object, Lisp_Object); | |
7ab12479 | 3287 | |
6a44ffb3 SM |
3288 | static void |
3289 | run_funs (Lisp_Object funs) | |
3290 | { | |
3291 | for (; CONSP (funs); funs = XCDR (funs)) | |
3292 | if (!EQ (XCAR (funs), Qt)) | |
3293 | call0 (XCAR (funs)); | |
3294 | } | |
3295 | ||
3296 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3297 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3298 | |
ef264c42 SM |
3299 | void |
3300 | run_window_configuration_change_hook (struct frame *f) | |
3301 | { | |
fec89261 | 3302 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3303 | Lisp_Object frame, global_wcch |
3304 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3305 | XSETFRAME (frame, f); | |
3306 | ||
3307 | if (NILP (Vrun_hooks)) | |
3308 | return; | |
3309 | ||
fec89261 MR |
3310 | if (SELECTED_FRAME () != f) |
3311 | { | |
c6932ecd MR |
3312 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
3313 | Fselect_frame (frame, Qt); | |
fec89261 | 3314 | } |
6a44ffb3 SM |
3315 | |
3316 | /* Use the right buffer. Matters when running the local hooks. */ | |
3317 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3318 | { | |
3319 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3320 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3321 | } | |
3322 | ||
3323 | /* Look for buffer-local values. */ | |
3324 | { | |
3325 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3326 | for (; CONSP (windows); windows = XCDR (windows)) | |
3327 | { | |
3328 | Lisp_Object window = XCAR (windows); | |
3329 | Lisp_Object buffer = Fwindow_buffer (window); | |
3330 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3331 | buffer))) | |
3332 | { | |
4554d213 | 3333 | int count1 = SPECPDL_INDEX (); |
6a44ffb3 SM |
3334 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3335 | select_window_norecord (window); | |
3336 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3337 | buffer)); | |
4554d213 | 3338 | unbind_to (count1, Qnil); |
fec89261 | 3339 | } |
6a44ffb3 SM |
3340 | } |
3341 | } | |
047aaeb9 | 3342 | |
6a44ffb3 SM |
3343 | run_funs (global_wcch); |
3344 | unbind_to (count, Qnil); | |
ef264c42 SM |
3345 | } |
3346 | ||
5500c422 GM |
3347 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3348 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3349 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3350 | margins, fringes, and scroll-bar settings of the window are not | |
3351 | reset from the buffer's local settings. */ | |
7ab12479 | 3352 | |
5500c422 | 3353 | void |
971de7fb | 3354 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3355 | { |
3356 | struct window *w = XWINDOW (window); | |
3357 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3358 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3359 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3360 | |
3361 | w->buffer = buffer; | |
86e48436 RS |
3362 | |
3363 | if (EQ (window, selected_window)) | |
4b4deea2 | 3364 | BVAR (b, last_selected_window) = window; |
beb4e312 | 3365 | |
c49a0495 KS |
3366 | /* Let redisplay errors through. */ |
3367 | b->display_error_modiff = 0; | |
3368 | ||
beb4e312 | 3369 | /* Update time stamps of buffer display. */ |
4b4deea2 TT |
3370 | if (INTEGERP (BVAR (b, display_count))) |
3371 | XSETINT (BVAR (b, display_count), XINT (BVAR (b, display_count)) + 1); | |
3372 | BVAR (b, display_time) = Fcurrent_time (); | |
86e48436 | 3373 | |
d834a2e9 | 3374 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 3375 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 3376 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 3377 | w->window_end_valid = Qnil; |
c3b232e4 | 3378 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3379 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3380 | vscroll. This case happens for example when called from |
3381 | change_frame_size_1, where we use a dummy call to | |
3382 | Fset_window_buffer on the frame's selected window (and no other) | |
3383 | just in order to run window-configuration-change-hook. | |
3384 | Resetting hscroll and vscroll here is problematic for things like | |
3385 | image-mode and doc-view-mode since it resets the image's position | |
3386 | whenever we resize the frame. */ | |
3387 | w->hscroll = w->min_hscroll = make_number (0); | |
3388 | w->vscroll = 0; | |
3389 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3390 | set_marker_restricted (w->start, | |
3391 | make_number (b->last_window_start), | |
3392 | buffer); | |
3393 | w->start_at_line_beg = Qnil; | |
3394 | w->force_start = Qnil; | |
3395 | XSETFASTINT (w->last_modified, 0); | |
3396 | XSETFASTINT (w->last_overlay_modified, 0); | |
3397 | } | |
3398 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3399 | I doubt it's worth the trouble. */ | |
7ab12479 | 3400 | windows_or_buffers_changed++; |
5b03d3c0 | 3401 | |
da39107c | 3402 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3403 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3404 | because that might itself be a local variable. */ | |
da39107c | 3405 | if (window_initialized) |
5b03d3c0 | 3406 | { |
da39107c | 3407 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3408 | Fset_buffer (buffer); |
3409 | } | |
3410 | ||
a1562258 SM |
3411 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3412 | ||
949cf20f KS |
3413 | if (!keep_margins_p) |
3414 | { | |
3415 | /* Set left and right marginal area width etc. from buffer. */ | |
3416 | ||
79fd290e | 3417 | /* This may call adjust_window_margins three times, so |
949cf20f | 3418 | temporarily disable window margins. */ |
6b61353c KH |
3419 | Lisp_Object save_left = w->left_margin_cols; |
3420 | Lisp_Object save_right = w->right_margin_cols; | |
3421 | ||
949cf20f KS |
3422 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3423 | ||
3424 | Fset_window_fringes (window, | |
4b4deea2 TT |
3425 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3426 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3427 | |
3428 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3429 | BVAR (b, scroll_bar_width), |
3430 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3431 | |
6b61353c KH |
3432 | w->left_margin_cols = save_left; |
3433 | w->right_margin_cols = save_right; | |
3434 | ||
949cf20f | 3435 | Fset_window_margins (window, |
4b4deea2 | 3436 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3437 | } |
7ab12479 | 3438 | |
5500c422 GM |
3439 | if (run_hooks_p) |
3440 | { | |
3441 | if (! NILP (Vwindow_scroll_functions)) | |
3442 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3443 | Fmarker_position (w->start)); | |
ef264c42 | 3444 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3445 | } |
543f5fb1 | 3446 | |
5b03d3c0 | 3447 | unbind_to (count, Qnil); |
5500c422 | 3448 | } |
5b03d3c0 | 3449 | |
5500c422 | 3450 | |
a7ca3326 | 3451 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3452 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3453 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3454 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3455 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3456 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 3457 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 3458 | |
7bfac547 MR |
3459 | This function throws an error when WINDOW is strongly dedicated to its |
3460 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3461 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3462 | |
8fef9de1 MR |
3463 | This function runs `window-scroll-functions' before running |
3464 | `window-configuration-change-hook'. */) | |
5842a27b | 3465 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3466 | { |
d653c8cc | 3467 | register Lisp_Object tem, buffer; |
5500c422 | 3468 | register struct window *w = decode_window (window); |
5500c422 | 3469 | |
bed0c171 | 3470 | XSETWINDOW (window, w); |
d653c8cc | 3471 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3472 | CHECK_BUFFER (buffer); |
4b4deea2 | 3473 | if (NILP (BVAR (XBUFFER (buffer), name))) |
5500c422 GM |
3474 | error ("Attempt to display deleted buffer"); |
3475 | ||
3476 | tem = w->buffer; | |
aac0c6e3 MR |
3477 | if (NILP (tem)) |
3478 | error ("Window is deleted"); | |
3479 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3480 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3481 | { |
ef1b0ba7 SM |
3482 | if (EQ (tem, buffer)) |
3483 | return Qnil; | |
3484 | else if (EQ (w->dedicated, Qt)) | |
4b4deea2 | 3485 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); |
ef1b0ba7 SM |
3486 | else |
3487 | w->dedicated = Qnil; | |
5500c422 GM |
3488 | |
3489 | unshow_buffer (w); | |
3490 | } | |
3491 | ||
949cf20f | 3492 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3493 | return Qnil; |
3494 | } | |
3495 | ||
e6b84b30 MR |
3496 | /* If select_window is called with inhibit_point_swap non-zero it will |
3497 | not store point of the old selected window's buffer back into that | |
3498 | window's pointm slot. This is needed by Fset_window_configuration to | |
3499 | avoid that the display routine is called with selected_window set to | |
3500 | Qnil causing a subsequent crash. */ | |
2d0834cc | 3501 | |
e6b84b30 | 3502 | static Lisp_Object |
7c82f3e2 | 3503 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) |
7ab12479 JB |
3504 | { |
3505 | register struct window *w; | |
719eaeb1 | 3506 | register struct window *ow; |
1ae1a37d | 3507 | struct frame *sf; |
7ab12479 | 3508 | |
b7826503 | 3509 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3510 | |
3511 | w = XWINDOW (window); | |
50e88778 | 3512 | w->frozen_window_start_p = 0; |
7ab12479 | 3513 | |
4e822bdc MR |
3514 | if (NILP (norecord)) |
3515 | { | |
3516 | ++window_select_count; | |
3517 | XSETFASTINT (w->use_time, window_select_count); | |
13b5221f | 3518 | record_buffer (w->buffer); |
4e822bdc MR |
3519 | } |
3520 | ||
bae1fa42 | 3521 | if (EQ (window, selected_window) && !inhibit_point_swap) |
7ab12479 JB |
3522 | return window; |
3523 | ||
ca2d5566 SM |
3524 | sf = SELECTED_FRAME (); |
3525 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3526 | { | |
3527 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3528 | /* Use this rather than Fhandle_switch_frame | |
3529 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3530 | move around in the state where a minibuffer in a separate | |
3531 | frame is active. */ | |
c6932ecd | 3532 | Fselect_frame (WINDOW_FRAME (w), norecord); |
ca2d5566 SM |
3533 | /* Fselect_frame called us back so we've done all the work already. */ |
3534 | eassert (EQ (window, selected_window)); | |
3535 | return window; | |
3536 | } | |
3537 | else | |
3538 | sf->selected_window = window; | |
3539 | ||
a46c0153 RS |
3540 | /* Store the current buffer's actual point into the |
3541 | old selected window. It belongs to that window, | |
3542 | and when the window is not selected, must be in the window. */ | |
e6b84b30 | 3543 | if (!inhibit_point_swap) |
719eaeb1 GM |
3544 | { |
3545 | ow = XWINDOW (selected_window); | |
3546 | if (! NILP (ow->buffer)) | |
3547 | set_marker_both (ow->pointm, ow->buffer, | |
3548 | BUF_PT (XBUFFER (ow->buffer)), | |
3549 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3550 | } | |
7ab12479 JB |
3551 | |
3552 | selected_window = window; | |
7ab12479 | 3553 | |
7ab12479 JB |
3554 | Fset_buffer (w->buffer); |
3555 | ||
4b4deea2 | 3556 | BVAR (XBUFFER (w->buffer), last_selected_window) = window; |
86e48436 | 3557 | |
7ab12479 JB |
3558 | /* Go to the point recorded in the window. |
3559 | This is important when the buffer is in more | |
3560 | than one window. It also matters when | |
3561 | redisplay_window has altered point after scrolling, | |
3562 | because it makes the change only in the window. */ | |
3563 | { | |
2452438f | 3564 | register EMACS_INT new_point = marker_position (w->pointm); |
7ab12479 JB |
3565 | if (new_point < BEGV) |
3566 | SET_PT (BEGV); | |
a9c95e08 | 3567 | else if (new_point > ZV) |
7ab12479 JB |
3568 | SET_PT (ZV); |
3569 | else | |
3570 | SET_PT (new_point); | |
3571 | } | |
3572 | ||
3573 | windows_or_buffers_changed++; | |
3574 | return window; | |
3575 | } | |
14d87dc9 | 3576 | |
e6b84b30 MR |
3577 | |
3578 | /* Note that selected_window can be nil when this is called from | |
3579 | Fset_window_configuration. */ | |
3580 | ||
a7ca3326 | 3581 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
e6b84b30 MR |
3582 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
3583 | If WINDOW is not already selected, make WINDOW's buffer current | |
3584 | and make WINDOW the frame's selected window. Return WINDOW. | |
3585 | Optional second arg NORECORD non-nil means do not put this buffer | |
3586 | at the front of the list of recently selected ones and do not | |
3587 | make this window the most recently selected one. | |
3588 | ||
3589 | Note that the main editor command loop selects the buffer of the | |
3590 | selected window before each command. */) | |
7c82f3e2 | 3591 | (register Lisp_Object window, Lisp_Object norecord) |
e6b84b30 | 3592 | { |
29feb0e9 | 3593 | return select_window (window, norecord, 0); |
e6b84b30 MR |
3594 | } |
3595 | ||
14d87dc9 | 3596 | static Lisp_Object |
971de7fb | 3597 | select_window_norecord (Lisp_Object window) |
14d87dc9 | 3598 | { |
ab6d1131 MR |
3599 | return WINDOW_LIVE_P (window) |
3600 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 3601 | } |
c6932ecd MR |
3602 | |
3603 | static Lisp_Object | |
971de7fb | 3604 | select_frame_norecord (Lisp_Object frame) |
c6932ecd MR |
3605 | { |
3606 | return FRAME_LIVE_P (XFRAME (frame)) | |
3607 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3608 | } | |
b7354ddf | 3609 | \f |
7e5cf297 | 3610 | static Lisp_Object |
971de7fb | 3611 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3612 | { |
87478b52 | 3613 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3614 | } |
3615 | ||
6b61353c KH |
3616 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3617 | 0, 1, 0, | |
5a1048a5 | 3618 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3619 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3620 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3621 | displaying that buffer. */) |
5842a27b | 3622 | (Lisp_Object object) |
6b61353c KH |
3623 | { |
3624 | if (NILP (object)) | |
3625 | { | |
3626 | windows_or_buffers_changed++; | |
3627 | update_mode_lines++; | |
3628 | return Qt; | |
3629 | } | |
3630 | ||
3631 | if (WINDOWP (object)) | |
3632 | { | |
3633 | struct window *w = XWINDOW (object); | |
3634 | mark_window_display_accurate (object, 0); | |
3635 | w->update_mode_line = Qt; | |
3636 | if (BUFFERP (w->buffer)) | |
3637 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3638 | ++update_mode_lines; | |
3639 | return Qt; | |
3640 | } | |
0cc1039f | 3641 | |
6b61353c KH |
3642 | if (STRINGP (object)) |
3643 | object = Fget_buffer (object); | |
4b4deea2 | 3644 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
6b61353c KH |
3645 | { |
3646 | /* Walk all windows looking for buffer, and force update | |
3647 | of each of those windows. */ | |
3648 | ||
3649 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3650 | return NILP (object) ? Qnil : Qt; | |
3651 | } | |
3652 | ||
3653 | /* If nothing suitable was found, just return. | |
3654 | We could signal an error, but this feature will typically be used | |
3655 | asynchronously in timers or process sentinels, so we don't. */ | |
3656 | return Qnil; | |
3657 | } | |
3658 | ||
3659 | ||
7ab12479 | 3660 | void |
971de7fb | 3661 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3662 | { |
3663 | register struct buffer *old = current_buffer; | |
3664 | register Lisp_Object window; | |
3665 | register struct window *w; | |
3666 | ||
4b4deea2 | 3667 | BVAR (XBUFFER (buf), directory) = BVAR (current_buffer, directory); |
bccd3dd1 | 3668 | |
7ab12479 | 3669 | Fset_buffer (buf); |
c6367666 | 3670 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3671 | BEGV = BEG; |
3672 | ZV = Z; | |
3673 | SET_PT (BEG); | |
7ab12479 JB |
3674 | set_buffer_internal (old); |
3675 | ||
e67a1dea | 3676 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3677 | call1 (Vtemp_buffer_show_function, buf); |
3678 | else | |
3679 | { | |
87478b52 | 3680 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3681 | |
1ae1a37d | 3682 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3683 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3684 | Vminibuf_scroll_window = window; |
3685 | w = XWINDOW (window); | |
d834a2e9 | 3686 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3687 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3688 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3689 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3690 | |
beb4e312 | 3691 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3692 | and its buffer current. */ |
dee091a3 JD |
3693 | { |
3694 | int count = SPECPDL_INDEX (); | |
3695 | Lisp_Object prev_window, prev_buffer; | |
3696 | prev_window = selected_window; | |
3697 | XSETBUFFER (prev_buffer, old); | |
3698 | ||
3699 | /* Select the window that was chosen, for running the hook. | |
3700 | Note: Both Fselect_window and select_window_norecord may | |
3701 | set-buffer to the buffer displayed in the window, | |
3702 | so we need to save the current buffer. --stef */ | |
3703 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3704 | record_unwind_protect (select_window_norecord, prev_window); | |
3705 | Fselect_window (window, Qt); | |
3706 | Fset_buffer (w->buffer); | |
3707 | Frun_hooks (1, &Qtemp_buffer_show_hook); | |
3708 | unbind_to (count, Qnil); | |
3709 | } | |
2cccc823 | 3710 | } |
7ab12479 | 3711 | } |
3e21b6a7 SM |
3712 | |
3713 | DEFUN ("internal-temp-output-buffer-show", | |
3714 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
3715 | 1, 1, 0, | |
3716 | doc: /* Internal function for `with-output-to-temp-buffer''. */) | |
3717 | (Lisp_Object buf) | |
3718 | { | |
3719 | temp_output_buffer_show (buf); | |
3720 | return Qnil; | |
3721 | } | |
7ab12479 | 3722 | \f |
dfcf069d | 3723 | static void |
971de7fb | 3724 | make_dummy_parent (Lisp_Object window) |
7ab12479 | 3725 | { |
cffec418 | 3726 | Lisp_Object new; |
7ab12479 | 3727 | register struct window *o, *p; |
cffec418 | 3728 | int i; |
7ab12479 | 3729 | |
cffec418 | 3730 | o = XWINDOW (window); |
26605be9 | 3731 | p = allocate_window (); |
cffec418 | 3732 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3733 | ((struct Lisp_Vector *) p)->contents[i] |
3734 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3735 | XSETWINDOW (new, p); |
7ab12479 | 3736 | |
2a1893f4 SM |
3737 | ++sequence_number; |
3738 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3739 | |
3740 | /* Put new into window structure in place of window */ | |
3741 | replace_window (window, new); | |
3742 | ||
3743 | o->next = Qnil; | |
3744 | o->prev = Qnil; | |
3745 | o->vchild = Qnil; | |
3746 | o->hchild = Qnil; | |
3747 | o->parent = new; | |
3748 | ||
3749 | p->start = Qnil; | |
3750 | p->pointm = Qnil; | |
3751 | p->buffer = Qnil; | |
3752 | } | |
3753 | ||
3754 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3755 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3756 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
3757 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
3758 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
3759 | window's scroll bar, or the divider column to its right. | |
c2755926 | 3760 | Interactively, all arguments are nil. |
c2755926 | 3761 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
3762 | The upper or leftmost window is the original one, and remains selected |
3763 | if it was selected before. | |
3764 | ||
87527026 | 3765 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
5842a27b | 3766 | (Lisp_Object window, Lisp_Object size, Lisp_Object horizontal) |
7ab12479 JB |
3767 | { |
3768 | register Lisp_Object new; | |
3769 | register struct window *o, *p; | |
c0807608 | 3770 | FRAME_PTR fo; |
77ae0fe3 | 3771 | register int size_int; |
7ab12479 | 3772 | |
265a9e55 | 3773 | if (NILP (window)) |
7ab12479 JB |
3774 | window = selected_window; |
3775 | else | |
b7826503 | 3776 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3777 | |
3778 | o = XWINDOW (window); | |
c0807608 | 3779 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3780 | |
77ae0fe3 | 3781 | if (NILP (size)) |
7ab12479 | 3782 | { |
87527026 | 3783 | if (!NILP (horizontal)) |
c0807608 | 3784 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3785 | the usable space in columns by two. |
3786 | We round up, since the left-hand window may include | |
3787 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3788 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3789 | else |
949cf20f | 3790 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3791 | } |
3792 | else | |
3793 | { | |
b7826503 | 3794 | CHECK_NUMBER (size); |
77ae0fe3 | 3795 | size_int = XINT (size); |
7ab12479 JB |
3796 | } |
3797 | ||
3798 | if (MINI_WINDOW_P (o)) | |
3799 | error ("Attempt to split minibuffer window"); | |
87527026 | 3800 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 3801 | error ("Attempt to split fixed-size window"); |
7ab12479 | 3802 | |
87527026 | 3803 | if (NILP (horizontal)) |
7ab12479 | 3804 | { |
047aaeb9 MR |
3805 | int window_safe_height = window_min_size_2 (o, 0, 0); |
3806 | ||
f1de8c77 | 3807 | if (size_int < window_safe_height) |
77ae0fe3 | 3808 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 3809 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 3810 | error ("Window height %d too small (after splitting)", |
5fdb398c | 3811 | (int) (XFASTINT (o->total_lines) - size_int)); |
265a9e55 JB |
3812 | if (NILP (o->parent) |
3813 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3814 | { |
3815 | make_dummy_parent (window); | |
3816 | new = o->parent; | |
3817 | XWINDOW (new)->vchild = window; | |
3818 | } | |
3819 | } | |
3820 | else | |
3821 | { | |
047aaeb9 MR |
3822 | int window_safe_width = window_min_size_2 (o, 1, 0); |
3823 | ||
f1de8c77 | 3824 | if (size_int < window_safe_width) |
77ae0fe3 | 3825 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 3826 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 3827 | error ("Window width %d too small (after splitting)", |
5fdb398c | 3828 | (int) (XFASTINT (o->total_cols) - size_int)); |
265a9e55 JB |
3829 | if (NILP (o->parent) |
3830 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3831 | { |
3832 | make_dummy_parent (window); | |
3833 | new = o->parent; | |
3834 | XWINDOW (new)->hchild = window; | |
3835 | } | |
3836 | } | |
3837 | ||
3838 | /* Now we know that window's parent is a vertical combination | |
3839 | if we are dividing vertically, or a horizontal combination | |
3840 | if we are making side-by-side windows */ | |
3841 | ||
3842 | windows_or_buffers_changed++; | |
c0807608 | 3843 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3844 | new = make_window (); |
3845 | p = XWINDOW (new); | |
3846 | ||
44fa5b1e | 3847 | p->frame = o->frame; |
7ab12479 | 3848 | p->next = o->next; |
265a9e55 | 3849 | if (!NILP (p->next)) |
7ab12479 JB |
3850 | XWINDOW (p->next)->prev = new; |
3851 | p->prev = window; | |
3852 | o->next = new; | |
3853 | p->parent = o->parent; | |
3854 | p->buffer = Qt; | |
5500c422 | 3855 | p->window_end_valid = Qnil; |
72af86bd | 3856 | memset (&p->last_cursor, 0, sizeof p->last_cursor); |
7ab12479 | 3857 | |
949cf20f KS |
3858 | /* Duplicate special geometry settings. */ |
3859 | ||
3860 | p->left_margin_cols = o->left_margin_cols; | |
3861 | p->right_margin_cols = o->right_margin_cols; | |
3862 | p->left_fringe_width = o->left_fringe_width; | |
3863 | p->right_fringe_width = o->right_fringe_width; | |
3864 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3865 | p->scroll_bar_width = o->scroll_bar_width; | |
3866 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3867 | ||
44fa5b1e | 3868 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3869 | |
87527026 | 3870 | if (!NILP (horizontal)) |
7ab12479 | 3871 | { |
949cf20f KS |
3872 | p->total_lines = o->total_lines; |
3873 | p->top_line = o->top_line; | |
3874 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3875 | XSETFASTINT (o->total_cols, size_int); | |
3876 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3877 | adjust_window_margins (p); | |
3878 | adjust_window_margins (o); | |
7ab12479 JB |
3879 | } |
3880 | else | |
3881 | { | |
949cf20f KS |
3882 | p->left_col = o->left_col; |
3883 | p->total_cols = o->total_cols; | |
3884 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3885 | XSETFASTINT (o->total_lines, size_int); | |
3886 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3887 | } |
3888 | ||
5500c422 GM |
3889 | /* Adjust glyph matrices. */ |
3890 | adjust_glyphs (fo); | |
949cf20f KS |
3891 | |
3892 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3893 | return new; |
3894 | } | |
3895 | \f | |
56ebfae2 | 3896 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
3897 | doc: /* Make selected window SIZE lines taller. |
3898 | Interactively, if no argument is given, make the selected window one | |
3899 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
3900 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
3901 | -SIZE lines or columns. Return nil. | |
3902 | ||
3903 | This function can delete windows if they get too small. The size of | |
3904 | fixed size windows is not altered by this function. */) | |
5842a27b | 3905 | (Lisp_Object size, Lisp_Object horizontal) |
7ab12479 | 3906 | { |
aac0c6e3 MR |
3907 | CHECK_NUMBER (size); |
3908 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3909 | |
eeca6f6f | 3910 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3911 | |
7ab12479 JB |
3912 | return Qnil; |
3913 | } | |
3914 | ||
56ebfae2 | 3915 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
3916 | doc: /* Make selected window SIZE lines smaller. |
3917 | Interactively, if no argument is given, make the selected window one | |
3918 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
3919 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
3920 | window by -SIZE lines or columns. Return nil. | |
3921 | ||
3922 | This function can delete windows if they get too small. The size of | |
3923 | fixed size windows is not altered by this function. */) | |
5842a27b | 3924 | (Lisp_Object size, Lisp_Object horizontal) |
aac0c6e3 MR |
3925 | { |
3926 | CHECK_NUMBER (size); | |
3927 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3928 | |
eeca6f6f | 3929 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3930 | |
7ab12479 JB |
3931 | return Qnil; |
3932 | } | |
3933 | ||
2f7c71a1 | 3934 | static int |
971de7fb | 3935 | window_height (Lisp_Object window) |
7ab12479 JB |
3936 | { |
3937 | register struct window *p = XWINDOW (window); | |
949cf20f | 3938 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3939 | } |
3940 | ||
2f7c71a1 | 3941 | static int |
971de7fb | 3942 | window_width (Lisp_Object window) |
7ab12479 JB |
3943 | { |
3944 | register struct window *p = XWINDOW (window); | |
949cf20f | 3945 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3946 | } |
3947 | ||
177c0ea7 | 3948 | |
7ab12479 | 3949 | #define CURBEG(w) \ |
5afc696a | 3950 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3951 | |
3952 | #define CURSIZE(w) \ | |
5afc696a | 3953 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 3954 | |
233a4a2c | 3955 | |
047aaeb9 MR |
3956 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
3957 | horizontally; zero means do it vertically. | |
f95284d2 | 3958 | |
5afc696a | 3959 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 3960 | request. If they become too small in the process, they may be |
56ebfae2 | 3961 | deleted. */ |
7ab12479 | 3962 | |
f984d4fc | 3963 | static void |
971de7fb | 3964 | enlarge_window (Lisp_Object window, int delta, int horiz_flag) |
7ab12479 | 3965 | { |
86c8e823 | 3966 | Lisp_Object parent, next, prev; |
233a4a2c | 3967 | struct window *p; |
3578db3c KR |
3968 | Lisp_Object *sizep; |
3969 | int maximum; | |
f57e2426 | 3970 | int (*sizefun) (Lisp_Object) |
5afc696a | 3971 | = horiz_flag ? window_width : window_height; |
f57e2426 | 3972 | void (*setsizefun) (Lisp_Object, int, int) |
5afc696a | 3973 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 3974 | |
233a4a2c | 3975 | /* Give up if this window cannot be resized. */ |
5afc696a | 3976 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
3977 | error ("Window is not resizable"); |
3978 | ||
3979 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3980 | while (1) |
3981 | { | |
3982 | p = XWINDOW (window); | |
3983 | parent = p->parent; | |
177c0ea7 | 3984 | |
265a9e55 | 3985 | if (NILP (parent)) |
7ab12479 | 3986 | { |
5afc696a | 3987 | if (horiz_flag) |
7ab12479 JB |
3988 | error ("No other window to side of this one"); |
3989 | break; | |
3990 | } | |
177c0ea7 | 3991 | |
5afc696a | 3992 | if (horiz_flag |
233a4a2c | 3993 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 3994 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 3995 | break; |
177c0ea7 | 3996 | |
7ab12479 JB |
3997 | window = parent; |
3998 | } | |
3999 | ||
05c2896a | 4000 | sizep = &CURSIZE (window); |
7ab12479 | 4001 | |
7ab12479 JB |
4002 | { |
4003 | register int maxdelta; | |
7ab12479 | 4004 | |
f95284d2 RS |
4005 | /* Compute the maximum size increment this window can have. */ |
4006 | ||
56ebfae2 RS |
4007 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4008 | /* This is a main window followed by a minibuffer. */ | |
4009 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4010 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4011 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4012 | /* This is a minibuffer following a main window. */ |
4013 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4014 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4015 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4016 | /* This is a frame with only one window, a minibuffer-only |
4017 | or a minibufferless frame. */ | |
4018 | : (delta = 0)); | |
7ab12479 JB |
4019 | |
4020 | if (delta > maxdelta) | |
4021 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4022 | the full frame, or make the only window aside from the |
4023 | minibuffer the full frame. */ | |
7ab12479 | 4024 | delta = maxdelta; |
6b54027b | 4025 | } |
d5783c40 | 4026 | |
047aaeb9 MR |
4027 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4028 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4029 | { |
543f5fb1 | 4030 | delete_window (window); |
d5783c40 | 4031 | return; |
6b54027b RS |
4032 | } |
4033 | ||
4034 | if (delta == 0) | |
4035 | return; | |
7ab12479 | 4036 | |
f95284d2 | 4037 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4038 | maximum = 0; |
9beb8baa | 4039 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4040 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4041 | horiz_flag, 0, 0, 0); |
9beb8baa | 4042 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4043 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4044 | horiz_flag, 0, 0, 0); |
db98a733 | 4045 | |
f95284d2 | 4046 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4047 | if (delta <= maximum) |
7ab12479 | 4048 | { |
db98a733 RS |
4049 | Lisp_Object first_unaffected; |
4050 | Lisp_Object first_affected; | |
233a4a2c | 4051 | int fixed_p; |
db98a733 RS |
4052 | |
4053 | next = p->next; | |
4054 | prev = p->prev; | |
4055 | first_affected = window; | |
4056 | /* Look at one sibling at a time, | |
4057 | moving away from this window in both directions alternately, | |
4058 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4059 | while (delta != 0 |
56ebfae2 | 4060 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4061 | { |
db98a733 RS |
4062 | if (! NILP (next)) |
4063 | { | |
c1636aa6 | 4064 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4065 | - window_min_size (XWINDOW (next), horiz_flag, |
4066 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4067 | if (!fixed_p) |
4068 | { | |
4069 | if (this_one > delta) | |
4070 | this_one = delta; | |
177c0ea7 | 4071 | |
233a4a2c | 4072 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4073 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4074 | |
233a4a2c GM |
4075 | delta -= this_one; |
4076 | } | |
177c0ea7 | 4077 | |
db98a733 RS |
4078 | next = XWINDOW (next)->next; |
4079 | } | |
177c0ea7 | 4080 | |
db98a733 RS |
4081 | if (delta == 0) |
4082 | break; | |
177c0ea7 | 4083 | |
56ebfae2 | 4084 | if (! NILP (prev)) |
db98a733 | 4085 | { |
c1636aa6 | 4086 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4087 | - window_min_size (XWINDOW (prev), horiz_flag, |
4088 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4089 | if (!fixed_p) |
4090 | { | |
4091 | if (this_one > delta) | |
4092 | this_one = delta; | |
177c0ea7 | 4093 | |
233a4a2c | 4094 | first_affected = prev; |
177c0ea7 | 4095 | |
233a4a2c | 4096 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4097 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4098 | |
4099 | delta -= this_one; | |
4100 | } | |
177c0ea7 | 4101 | |
db98a733 RS |
4102 | prev = XWINDOW (prev)->prev; |
4103 | } | |
4104 | } | |
4105 | ||
233a4a2c GM |
4106 | xassert (delta == 0); |
4107 | ||
db98a733 RS |
4108 | /* Now recalculate the edge positions of all the windows affected, |
4109 | based on the new sizes. */ | |
4110 | first_unaffected = next; | |
4111 | prev = first_affected; | |
4112 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4113 | prev = next, next = XWINDOW (next)->next) | |
4114 | { | |
3578db3c | 4115 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4116 | /* This does not change size of NEXT, |
4117 | but it propagates the new top edge to its children */ | |
4118 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4119 | } | |
7ab12479 JB |
4120 | } |
4121 | else | |
4122 | { | |
4123 | register int delta1; | |
4124 | register int opht = (*sizefun) (parent); | |
4125 | ||
3578db3c | 4126 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4127 | { |
4128 | /* If trying to grow this window to or beyond size of the parent, | |
4129 | just delete all the sibling windows. */ | |
4554d213 | 4130 | Lisp_Object start, tem; |
daf516d3 | 4131 | |
dc1ab1ee RS |
4132 | start = XWINDOW (parent)->vchild; |
4133 | if (NILP (start)) | |
4134 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4135 | |
dc1ab1ee RS |
4136 | /* Delete any siblings that come after WINDOW. */ |
4137 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4138 | while (! NILP (tem)) |
4139 | { | |
4554d213 | 4140 | Lisp_Object next1 = XWINDOW (tem)->next; |
dc1ab1ee | 4141 | delete_window (tem); |
4554d213 | 4142 | tem = next1; |
dc1ab1ee RS |
4143 | } |
4144 | ||
4145 | /* Delete any siblings that come after WINDOW. | |
4146 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4147 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4148 | tem = start; |
4149 | while (! EQ (tem, window)) | |
4150 | { | |
4554d213 | 4151 | Lisp_Object next1 = XWINDOW (tem)->next; |
dc1ab1ee | 4152 | delete_window (tem); |
4554d213 | 4153 | tem = next1; |
daf516d3 RS |
4154 | } |
4155 | } | |
7ab12479 | 4156 | else |
233a4a2c GM |
4157 | { |
4158 | /* Otherwise, make delta1 just right so that if we add | |
4159 | delta1 lines to this window and to the parent, and then | |
4160 | shrink the parent back to its original size, the new | |
4161 | proportional size of this window will increase by delta. | |
4162 | ||
4163 | The function size_window will compute the new height h' | |
4164 | of the window from delta1 as: | |
177c0ea7 | 4165 | |
233a4a2c GM |
4166 | e = delta1/n |
4167 | x = delta1 - delta1/n * n for the 1st resizable child | |
4168 | h' = h + e + x | |
4169 | ||
4170 | where n is the number of children that can be resized. | |
4171 | We can ignore x by choosing a delta1 that is a multiple of | |
4172 | n. We want the height of this window to come out as | |
177c0ea7 | 4173 | |
233a4a2c GM |
4174 | h' = h + delta |
4175 | ||
4176 | So, delta1 must be | |
177c0ea7 | 4177 | |
233a4a2c GM |
4178 | h + e = h + delta |
4179 | delta1/n = delta | |
4180 | delta1 = n * delta. | |
4181 | ||
a5731348 | 4182 | The number of children n equals the number of resizable |
233a4a2c | 4183 | children of this window + 1 because we know window itself |
04bf5b65 | 4184 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4185 | |
4186 | This reasoning is not correct when other windows become too | |
4187 | small and shrink_windows refuses to delete them. Below we | |
4188 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4189 | |
4190 | struct window *w = XWINDOW (window); | |
4191 | Lisp_Object s; | |
4192 | int n = 1; | |
4193 | ||
9beb8baa | 4194 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4195 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4196 | ++n; |
9beb8baa | 4197 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4198 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4199 | ++n; |
4200 | ||
4201 | delta1 = n * delta; | |
7ab12479 | 4202 | |
daf516d3 RS |
4203 | /* Add delta1 lines or columns to this window, and to the parent, |
4204 | keeping things consistent while not affecting siblings. */ | |
4205 | XSETINT (CURSIZE (parent), opht + delta1); | |
4206 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4207 | ||
4208 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4209 | shrinking this window and siblings proportionately. This |
4210 | brings parent back to correct size. Delta1 was calculated | |
4211 | so this makes this window the desired size, taking it all | |
4212 | out of the siblings. | |
4213 | ||
4214 | Temporarily set resize_proportionally to Qt to assure that, | |
4215 | if necessary, shrink_windows deletes smaller windows rather | |
4216 | than shrink this window. */ | |
4217 | w->resize_proportionally = Qt; | |
daf516d3 | 4218 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4219 | w->resize_proportionally = Qnil; |
daf516d3 | 4220 | } |
7ab12479 JB |
4221 | } |
4222 | ||
d834a2e9 | 4223 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4224 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4225 | |
4226 | /* Adjust glyph matrices. */ | |
4227 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4228 | } |
c1636aa6 | 4229 | |
0d384044 RS |
4230 | |
4231 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4232 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4233 | zero means adjust the height, moving the bottom edge. | |
4234 | ||
4235 | Following siblings of the selected window are resized to fulfill | |
4236 | the size request. If they become too small in the process, they | |
4237 | are not deleted; instead, we signal an error. */ | |
4238 | ||
4239 | static void | |
971de7fb | 4240 | adjust_window_trailing_edge (Lisp_Object window, int delta, int horiz_flag) |
0d384044 RS |
4241 | { |
4242 | Lisp_Object parent, child; | |
4243 | struct window *p; | |
4244 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4245 | int delcount = window_deletion_count; | |
4246 | ||
0d384044 RS |
4247 | CHECK_WINDOW (window); |
4248 | ||
4249 | /* Give up if this window cannot be resized. */ | |
4250 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4251 | error ("Window is not resizable"); | |
4252 | ||
4253 | while (1) | |
4254 | { | |
bd99e242 RS |
4255 | Lisp_Object first_parallel = Qnil; |
4256 | ||
c32de52a | 4257 | if (NILP (window)) |
0d384044 | 4258 | { |
5fe0b054 RS |
4259 | /* This happens if WINDOW on the previous iteration was |
4260 | at top level of the window tree. */ | |
0d384044 | 4261 | Fset_window_configuration (old_config); |
c32de52a | 4262 | error ("Specified window edge is fixed"); |
0d384044 RS |
4263 | } |
4264 | ||
c32de52a RS |
4265 | p = XWINDOW (window); |
4266 | parent = p->parent; | |
4267 | ||
bd99e242 RS |
4268 | /* See if this level has windows in parallel in the specified |
4269 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4270 | if (horiz_flag) | |
4271 | { | |
4272 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4273 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4274 | else if (NILP (parent) && !NILP (p->next)) |
4275 | { | |
4276 | /* Handle the vertical chain of main window and minibuffer | |
4277 | which has no parent. */ | |
4278 | first_parallel = window; | |
4279 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4280 | first_parallel = XWINDOW (first_parallel)->prev; | |
4281 | } | |
bd99e242 RS |
4282 | } |
4283 | else | |
4284 | { | |
4285 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4286 | first_parallel = XWINDOW (parent)->hchild; | |
4287 | } | |
4288 | ||
c32de52a | 4289 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4290 | and this window is the last one, and there is no higher level, |
4291 | its trailing edge is fixed. */ | |
4292 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4293 | && NILP (parent)) | |
c32de52a RS |
4294 | { |
4295 | Fset_window_configuration (old_config); | |
4296 | error ("Specified window edge is fixed"); | |
4297 | } | |
4298 | ||
0d384044 RS |
4299 | /* Don't make this window too small. */ |
4300 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4301 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4302 | { |
4303 | Fset_window_configuration (old_config); | |
4304 | error ("Cannot adjust window size as specified"); | |
4305 | } | |
4306 | ||
4307 | /* Clear out some redisplay caches. */ | |
4308 | XSETFASTINT (p->last_modified, 0); | |
4309 | XSETFASTINT (p->last_overlay_modified, 0); | |
4310 | ||
4311 | /* Adjust this window's edge. */ | |
4312 | XSETINT (CURSIZE (window), | |
4313 | XINT (CURSIZE (window)) + delta); | |
4314 | ||
4315 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4316 | make them smaller, and exit the loop. |
4317 | ||
0d384044 RS |
4318 | (If we reach the top of the tree and can never do this, |
4319 | we will fail and report an error, above.) */ | |
bd99e242 | 4320 | if (NILP (first_parallel)) |
0d384044 | 4321 | { |
c32de52a | 4322 | if (!NILP (p->next)) |
0d384044 | 4323 | { |
e99c7521 JD |
4324 | /* This may happen for the minibuffer. In that case |
4325 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4326 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4327 | { |
4328 | Fset_window_configuration (old_config); | |
4329 | error ("Cannot adjust window size as specified"); | |
4330 | } | |
4331 | ||
0d384044 RS |
4332 | XSETINT (CURBEG (p->next), |
4333 | XINT (CURBEG (p->next)) + delta); | |
4334 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4335 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4336 | break; |
4337 | } | |
4338 | } | |
4339 | else | |
4340 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4341 | Change the size of the other siblings. */ | |
bd99e242 | 4342 | for (child = first_parallel; |
0d384044 RS |
4343 | ! NILP (child); |
4344 | child = XWINDOW (child)->next) | |
4345 | if (! EQ (child, window)) | |
4346 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4347 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4348 | |
4349 | window = parent; | |
4350 | } | |
4351 | ||
4352 | /* If we made a window so small it got deleted, | |
4353 | we failed. Report failure. */ | |
4354 | if (delcount != window_deletion_count) | |
4355 | { | |
4356 | Fset_window_configuration (old_config); | |
4357 | error ("Cannot adjust window size as specified"); | |
4358 | } | |
4359 | ||
4360 | /* Adjust glyph matrices. */ | |
4361 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4362 | } | |
4363 | ||
7ab12479 JB |
4364 | #undef CURBEG |
4365 | #undef CURSIZE | |
4366 | ||
0d384044 RS |
4367 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4368 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4369 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4370 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4371 | Otherwise, adjust the height, moving the bottom edge. |
4372 | ||
4373 | Following siblings of the selected window are resized to fulfill | |
4374 | the size request. If they become too small in the process, they | |
4375 | are not deleted; instead, we signal an error. */) | |
5842a27b | 4376 | (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal) |
0d384044 RS |
4377 | { |
4378 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4379 | if (NILP (window)) |
4380 | window = selected_window; | |
0d384044 RS |
4381 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4382 | ||
eeca6f6f SM |
4383 | run_window_configuration_change_hook |
4384 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4385 | |
4386 | return Qnil; | |
4387 | } | |
4388 | ||
5500c422 | 4389 | |
f984d4fc GM |
4390 | \f |
4391 | /*********************************************************************** | |
4392 | Resizing Mini-Windows | |
4393 | ***********************************************************************/ | |
4394 | ||
f57e2426 | 4395 | static void shrink_window_lowest_first (struct window *, int); |
f984d4fc | 4396 | |
43b4a21f GM |
4397 | enum save_restore_action |
4398 | { | |
4399 | CHECK_ORIG_SIZES, | |
4400 | SAVE_ORIG_SIZES, | |
4401 | RESTORE_ORIG_SIZES | |
4402 | }; | |
4403 | ||
f57e2426 J |
4404 | static int save_restore_orig_size (struct window *, |
4405 | enum save_restore_action); | |
f984d4fc GM |
4406 | |
4407 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4408 | from lowest windows first. */ | |
4409 | ||
4410 | static void | |
971de7fb | 4411 | shrink_window_lowest_first (struct window *w, int height) |
f984d4fc GM |
4412 | { |
4413 | struct window *c; | |
4414 | Lisp_Object child; | |
4415 | int old_height; | |
4416 | ||
4417 | xassert (!MINI_WINDOW_P (w)); | |
4418 | ||
4419 | /* Set redisplay hints. */ | |
4420 | XSETFASTINT (w->last_modified, 0); | |
4421 | XSETFASTINT (w->last_overlay_modified, 0); | |
4422 | windows_or_buffers_changed++; | |
4423 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4424 | ||
949cf20f KS |
4425 | old_height = XFASTINT (w->total_lines); |
4426 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4427 | |
4428 | if (!NILP (w->hchild)) | |
4429 | { | |
4430 | for (child = w->hchild; !NILP (child); child = c->next) | |
4431 | { | |
4432 | c = XWINDOW (child); | |
949cf20f | 4433 | c->top_line = w->top_line; |
f984d4fc GM |
4434 | shrink_window_lowest_first (c, height); |
4435 | } | |
4436 | } | |
4437 | else if (!NILP (w->vchild)) | |
4438 | { | |
4439 | Lisp_Object last_child; | |
4440 | int delta = old_height - height; | |
4441 | int last_top; | |
6bbd7a29 GM |
4442 | |
4443 | last_child = Qnil; | |
177c0ea7 | 4444 | |
f984d4fc GM |
4445 | /* Find the last child. We are taking space from lowest windows |
4446 | first, so we iterate over children from the last child | |
4447 | backwards. */ | |
9beb8baa | 4448 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4449 | last_child = child; |
4450 | ||
047aaeb9 | 4451 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4452 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4453 | { | |
4454 | int this_one; | |
177c0ea7 | 4455 | |
f984d4fc | 4456 | c = XWINDOW (child); |
047aaeb9 | 4457 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4458 | |
4459 | if (this_one > delta) | |
4460 | this_one = delta; | |
4461 | ||
949cf20f | 4462 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4463 | delta -= this_one; |
4464 | } | |
4465 | ||
4466 | /* Compute new positions. */ | |
949cf20f | 4467 | last_top = XINT (w->top_line); |
f984d4fc GM |
4468 | for (child = w->vchild; !NILP (child); child = c->next) |
4469 | { | |
4470 | c = XWINDOW (child); | |
949cf20f KS |
4471 | c->top_line = make_number (last_top); |
4472 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4473 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4474 | } |
4475 | } | |
4476 | } | |
4477 | ||
4478 | ||
43b4a21f GM |
4479 | /* Save, restore, or check positions and sizes in the window tree |
4480 | rooted at W. ACTION says what to do. | |
f984d4fc | 4481 | |
949cf20f KS |
4482 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4483 | orig_total_lines members are valid for all windows in the window | |
4484 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4485 | |
43b4a21f | 4486 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4487 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4488 | |
949cf20f KS |
4489 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4490 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4491 | |
4492 | static int | |
971de7fb | 4493 | save_restore_orig_size (struct window *w, enum save_restore_action action) |
f984d4fc | 4494 | { |
43b4a21f GM |
4495 | int success_p = 1; |
4496 | ||
f984d4fc GM |
4497 | while (w) |
4498 | { | |
4499 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4500 | { |
4501 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4502 | success_p = 0; | |
4503 | } | |
f984d4fc | 4504 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4505 | { |
4506 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4507 | success_p = 0; | |
4508 | } | |
177c0ea7 | 4509 | |
43b4a21f | 4510 | switch (action) |
f984d4fc | 4511 | { |
43b4a21f | 4512 | case CHECK_ORIG_SIZES: |
949cf20f | 4513 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4514 | return 0; |
4515 | break; | |
4516 | ||
4517 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4518 | w->orig_top_line = w->top_line; |
4519 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4520 | XSETFASTINT (w->last_modified, 0); |
4521 | XSETFASTINT (w->last_overlay_modified, 0); | |
4522 | break; | |
4523 | ||
4524 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4525 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4526 | w->top_line = w->orig_top_line; | |
4527 | w->total_lines = w->orig_total_lines; | |
4528 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4529 | XSETFASTINT (w->last_modified, 0); |
4530 | XSETFASTINT (w->last_overlay_modified, 0); | |
4531 | break; | |
4532 | ||
4533 | default: | |
4534 | abort (); | |
f984d4fc | 4535 | } |
43b4a21f | 4536 | |
f984d4fc GM |
4537 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4538 | } | |
43b4a21f GM |
4539 | |
4540 | return success_p; | |
f984d4fc GM |
4541 | } |
4542 | ||
4543 | ||
4544 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4545 | without deleting other windows. */ | |
4546 | ||
4547 | void | |
971de7fb | 4548 | grow_mini_window (struct window *w, int delta) |
f984d4fc GM |
4549 | { |
4550 | struct frame *f = XFRAME (w->frame); | |
4551 | struct window *root; | |
177c0ea7 | 4552 | |
f984d4fc | 4553 | xassert (MINI_WINDOW_P (w)); |
522d013a JB |
4554 | /* Commenting out the following assertion goes against the stated interface |
4555 | of the function, but it currently does not seem to do anything useful. | |
4556 | See discussion of this issue in the thread for bug#4534. | |
4557 | xassert (delta >= 0); */ | |
177c0ea7 | 4558 | |
f984d4fc GM |
4559 | /* Compute how much we can enlarge the mini-window without deleting |
4560 | other windows. */ | |
4561 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
522d013a | 4562 | if (delta > 0) |
f984d4fc | 4563 | { |
047aaeb9 | 4564 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4565 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4566 | /* Note that the root window may already be smaller than |
eafa3196 | 4567 | min_height. */ |
949cf20f | 4568 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4569 | } |
177c0ea7 | 4570 | |
f984d4fc GM |
4571 | if (delta) |
4572 | { | |
4573 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4574 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4575 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4576 | |
4577 | /* Shrink other windows. */ | |
949cf20f | 4578 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4579 | |
4580 | /* Grow the mini-window. */ | |
949cf20f KS |
4581 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4582 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4583 | XSETFASTINT (w->last_modified, 0); |
4584 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4585 | |
f984d4fc GM |
4586 | adjust_glyphs (f); |
4587 | } | |
4588 | } | |
4589 | ||
4590 | ||
86c8e823 GM |
4591 | /* Shrink mini-window W. If there is recorded info about window sizes |
4592 | before a call to grow_mini_window, restore recorded window sizes. | |
4593 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4594 | line. */ | |
f984d4fc GM |
4595 | |
4596 | void | |
971de7fb | 4597 | shrink_mini_window (struct window *w) |
f984d4fc GM |
4598 | { |
4599 | struct frame *f = XFRAME (w->frame); | |
4600 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4601 | ||
43b4a21f | 4602 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4603 | { |
43b4a21f | 4604 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4605 | adjust_glyphs (f); |
4606 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4607 | windows_or_buffers_changed = 1; | |
4608 | } | |
949cf20f | 4609 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4610 | { |
0130fe1a GM |
4611 | /* Distribute the additional lines of the mini-window |
4612 | among the other windows. */ | |
86c8e823 GM |
4613 | Lisp_Object window; |
4614 | XSETWINDOW (window, w); | |
56ebfae2 | 4615 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4616 | } |
f984d4fc GM |
4617 | } |
4618 | ||
4619 | ||
4620 | \f | |
5500c422 GM |
4621 | /* Mark window cursors off for all windows in the window tree rooted |
4622 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4623 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4624 | the frame are cleared. */ | |
4625 | ||
4626 | void | |
971de7fb | 4627 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4628 | { |
4629 | while (w) | |
4630 | { | |
4631 | if (!NILP (w->hchild)) | |
4632 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4633 | else if (!NILP (w->vchild)) | |
4634 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4635 | else | |
4636 | w->phys_cursor_on_p = 0; | |
4637 | ||
4638 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4639 | } | |
4640 | } | |
4641 | ||
4642 | ||
e9c195b1 | 4643 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4644 | |
4645 | int | |
971de7fb | 4646 | window_internal_height (struct window *w) |
7ab12479 | 4647 | { |
949cf20f | 4648 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4649 | |
e9c195b1 GM |
4650 | if (!MINI_WINDOW_P (w)) |
4651 | { | |
4652 | if (!NILP (w->parent) | |
4653 | || !NILP (w->vchild) | |
4654 | || !NILP (w->hchild) | |
4655 | || !NILP (w->next) | |
4656 | || !NILP (w->prev) | |
4657 | || WINDOW_WANTS_MODELINE_P (w)) | |
4658 | --ht; | |
7ab12479 | 4659 | |
e9c195b1 GM |
4660 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4661 | --ht; | |
4662 | } | |
7ab12479 JB |
4663 | |
4664 | return ht; | |
4665 | } | |
4666 | ||
535e0b8e JB |
4667 | |
4668 | /* Return the number of columns in W. | |
a3c87d4e | 4669 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4670 | separating W from the sibling to its right. */ |
5500c422 | 4671 | |
535e0b8e | 4672 | int |
971de7fb | 4673 | window_box_text_cols (struct window *w) |
535e0b8e | 4674 | { |
5500c422 | 4675 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4676 | int width = XINT (w->total_cols); |
535e0b8e | 4677 | |
949cf20f | 4678 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4679 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4680 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4681 | else if (!FRAME_WINDOW_P (f) | |
4682 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4683 | /* The column of `|' characters separating side-by-side windows |
4684 | occupies one column only. */ | |
4685 | width -= 1; | |
4686 | ||
5500c422 | 4687 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4688 | /* On window-systems, fringes and display margins cannot be |
4689 | used for normal text. */ | |
4690 | width -= (WINDOW_FRINGE_COLS (w) | |
4691 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4692 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4693 | |
4694 | return width; | |
535e0b8e JB |
4695 | } |
4696 | ||
5500c422 GM |
4697 | \f |
4698 | /************************************************************************ | |
4699 | Window Scrolling | |
4700 | ***********************************************************************/ | |
535e0b8e | 4701 | |
5500c422 | 4702 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4703 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4704 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4705 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4706 | means don't signal an error if we try to move over BEGV or ZV, | |
4707 | respectively. */ | |
7ab12479 | 4708 | |
101d1605 | 4709 | static void |
971de7fb | 4710 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 4711 | { |
cba59f77 RS |
4712 | immediate_quit = 1; |
4713 | ||
5500c422 GM |
4714 | /* If we must, use the pixel-based version which is much slower than |
4715 | the line-based one but can handle varying line heights. */ | |
4716 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4717 | window_scroll_pixel_based (window, n, whole, noerror); | |
4718 | else | |
4719 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4720 | |
4721 | immediate_quit = 0; | |
5500c422 GM |
4722 | } |
4723 | ||
4724 | ||
4725 | /* Implementation of window_scroll that works based on pixel line | |
4726 | heights. See the comment of window_scroll for parameter | |
4727 | descriptions. */ | |
4728 | ||
4729 | static void | |
971de7fb | 4730 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4731 | { |
4732 | struct it it; | |
4733 | struct window *w = XWINDOW (window); | |
4734 | struct text_pos start; | |
5500c422 | 4735 | int this_scroll_margin; |
9d14503e | 4736 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4737 | int vscrolled = 0; |
5a857365 | 4738 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4739 | |
4740 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4741 | |
5500c422 | 4742 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4743 | the screen. Allow PT to be partially visible, otherwise |
4744 | something like (scroll-down 1) with PT in the line before | |
4745 | the partially visible one would recenter. */ | |
5a857365 KS |
4746 | |
4747 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4748 | { |
4749 | /* Move backward half the height of the window. Performance note: | |
4750 | vmotion used here is about 10% faster, but would give wrong | |
4751 | results for variable height lines. */ | |
4752 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4753 | it.current_y = it.last_visible_y; | |
f204989e | 4754 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4755 | |
5500c422 GM |
4756 | /* The function move_iterator_vertically may move over more than |
4757 | the specified y-distance. If it->w is small, e.g. a | |
4758 | mini-buffer window, we may end up in front of the window's | |
4759 | display area. This is the case when Start displaying at the | |
4760 | start of the line containing PT in this case. */ | |
4761 | if (it.current_y <= 0) | |
4762 | { | |
4763 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4764 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4765 | it.current_y = 0; |
4766 | } | |
4767 | ||
4768 | start = it.current.pos; | |
4769 | } | |
e56263e5 KS |
4770 | else if (auto_window_vscroll_p) |
4771 | { | |
5a857365 | 4772 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4773 | { |
4774 | int px; | |
4775 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4776 | if (whole) | |
e856c216 KS |
4777 | dy = max ((window_box_height (w) |
4778 | - next_screen_context_lines * dy), | |
4779 | dy); | |
e56263e5 KS |
4780 | dy *= n; |
4781 | ||
5a857365 | 4782 | if (n < 0) |
e56263e5 | 4783 | { |
5a857365 KS |
4784 | /* Only vscroll backwards if already vscrolled forwards. */ |
4785 | if (w->vscroll < 0 && rtop > 0) | |
4786 | { | |
4787 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4788 | Fset_window_vscroll (window, make_number (px), Qt); | |
4789 | return; | |
4790 | } | |
e56263e5 | 4791 | } |
5a857365 | 4792 | if (n > 0) |
e56263e5 | 4793 | { |
5a857365 KS |
4794 | /* Do vscroll if already vscrolled or only display line. */ |
4795 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4796 | { | |
4797 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4798 | Fset_window_vscroll (window, make_number (px), Qt); | |
4799 | return; | |
4800 | } | |
4801 | ||
4802 | /* Maybe modify window start instead of scrolling. */ | |
4803 | if (rbot > 0 || w->vscroll < 0) | |
4804 | { | |
2452438f | 4805 | EMACS_INT spos; |
5a857365 KS |
4806 | |
4807 | Fset_window_vscroll (window, make_number (0), Qt); | |
4808 | /* If there are other text lines above the current row, | |
4809 | move window start to current row. Else to next row. */ | |
4810 | if (rbot > 0) | |
4811 | spos = XINT (Fline_beginning_position (Qnil)); | |
4812 | else | |
4813 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4814 | set_marker_restricted (w->start, make_number (spos), | |
4815 | w->buffer); | |
4816 | w->start_at_line_beg = Qt; | |
4817 | w->update_mode_line = Qt; | |
4818 | XSETFASTINT (w->last_modified, 0); | |
4819 | XSETFASTINT (w->last_overlay_modified, 0); | |
4820 | /* Set force_start so that redisplay_window will run the | |
4821 | window-scroll-functions. */ | |
4822 | w->force_start = Qt; | |
4823 | return; | |
4824 | } | |
e56263e5 KS |
4825 | } |
4826 | } | |
5a857365 | 4827 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4828 | Fset_window_vscroll (window, make_number (0), Qt); |
4829 | } | |
5500c422 | 4830 | |
d0c38d63 | 4831 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4832 | point in the same window line as it is now, so get that line. */ |
4833 | if (!NILP (Vscroll_preserve_screen_position)) | |
4834 | { | |
c525d842 | 4835 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4836 | calls to scroll-up, scroll-down and other commands that |
4837 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4838 | possibility of point becoming "stuck" on a tall line when |
4839 | scrolling by one line. */ | |
66fe93d1 | 4840 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4841 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4842 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4843 | { |
4844 | start_display (&it, w, start); | |
4845 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4846 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4847 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4848 | } |
5500c422 GM |
4849 | } |
4850 | else | |
c876b227 SM |
4851 | window_scroll_pixel_based_preserve_y |
4852 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4853 | |
4854 | /* Move iterator it from start the specified distance forward or | |
4855 | backward. The result is the new window start. */ | |
4856 | start_display (&it, w, start); | |
4857 | if (whole) | |
4858 | { | |
2452438f | 4859 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
4860 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4861 | dy = max ((window_box_height (w) | |
4862 | - next_screen_context_lines * dy), | |
4863 | dy) * n; | |
d72340d4 GM |
4864 | |
4865 | /* Note that move_it_vertically always moves the iterator to the | |
4866 | start of a line. So, if the last line doesn't have a newline, | |
4867 | we would end up at the start of the line ending at ZV. */ | |
4868 | if (dy <= 0) | |
e856c216 KS |
4869 | { |
4870 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4871 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4872 | looking at an image that is taller that the window height. */ |
4873 | while (start_pos == IT_CHARPOS (it) | |
4874 | && start_pos > BEGV) | |
e4cc2dfc | 4875 | move_it_by_lines (&it, -1); |
e856c216 | 4876 | } |
d72340d4 | 4877 | else if (dy > 0) |
bed83ee4 | 4878 | { |
bed83ee4 KS |
4879 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4880 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4881 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4882 | looking at an image that is taller that the window height. */ |
4883 | while (start_pos == IT_CHARPOS (it) | |
4884 | && start_pos < ZV) | |
e4cc2dfc | 4885 | move_it_by_lines (&it, 1); |
bed83ee4 | 4886 | } |
5500c422 GM |
4887 | } |
4888 | else | |
e4cc2dfc | 4889 | move_it_by_lines (&it, n); |
5500c422 | 4890 | |
96ae58c8 RS |
4891 | /* We failed if we find ZV is already on the screen (scrolling up, |
4892 | means there's nothing past the end), or if we can't start any | |
4893 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4894 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4895 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4896 | { |
5cdb3cf3 MB |
4897 | if (IT_CHARPOS (it) == ZV) |
4898 | { | |
07ce8b53 RS |
4899 | if (it.current_y < it.last_visible_y |
4900 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4901 | > it.last_visible_y)) |
a74eca50 GM |
4902 | { |
4903 | /* The last line was only partially visible, make it fully | |
4904 | visible. */ | |
4905 | w->vscroll = (it.last_visible_y | |
4906 | - it.current_y + it.max_ascent + it.max_descent); | |
4907 | adjust_glyphs (it.f); | |
4908 | } | |
5cdb3cf3 MB |
4909 | else if (noerror) |
4910 | return; | |
cf402f3f | 4911 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 4912 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 4913 | else |
ba96a5cf | 4914 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 4915 | } |
5500c422 | 4916 | else |
5cdb3cf3 MB |
4917 | { |
4918 | if (w->vscroll != 0) | |
4919 | /* The first line was only partially visible, make it fully | |
4920 | visible. */ | |
4921 | w->vscroll = 0; | |
4922 | else if (noerror) | |
4923 | return; | |
4924 | else | |
ba96a5cf | 4925 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
4926 | } |
4927 | ||
4928 | /* If control gets here, then we vscrolled. */ | |
4929 | ||
4930 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4931 | ||
4932 | /* Don't try to change the window start below. */ | |
4933 | vscrolled = 1; | |
5500c422 GM |
4934 | } |
4935 | ||
5cdb3cf3 MB |
4936 | if (! vscrolled) |
4937 | { | |
2452438f EZ |
4938 | EMACS_INT pos = IT_CHARPOS (it); |
4939 | EMACS_INT bytepos; | |
e68def1e AS |
4940 | |
4941 | /* If in the middle of a multi-glyph character move forward to | |
4942 | the next character. */ | |
4943 | if (in_display_vector_p (&it)) | |
4944 | { | |
4945 | ++pos; | |
4946 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4947 | } | |
4948 | ||
5cdb3cf3 | 4949 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4950 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4951 | w->buffer); |
dad67609 RS |
4952 | bytepos = XMARKER (w->start)->bytepos; |
4953 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4954 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4955 | w->update_mode_line = Qt; |
4956 | XSETFASTINT (w->last_modified, 0); | |
4957 | XSETFASTINT (w->last_overlay_modified, 0); | |
4958 | /* Set force_start so that redisplay_window will run the | |
4959 | window-scroll-functions. */ | |
4960 | w->force_start = Qt; | |
4961 | } | |
177c0ea7 | 4962 | |
dc297565 RS |
4963 | /* The rest of this function uses current_y in a nonstandard way, |
4964 | not including the height of the header line if any. */ | |
5500c422 | 4965 | it.current_y = it.vpos = 0; |
177c0ea7 | 4966 | |
940f53e5 RS |
4967 | /* Move PT out of scroll margins. |
4968 | This code wants current_y to be zero at the window start position | |
4969 | even if there is a header line. */ | |
4970 | this_scroll_margin = max (0, scroll_margin); | |
4971 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4972 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4973 | ||
4974 | if (n > 0) | |
5500c422 | 4975 | { |
940f53e5 RS |
4976 | /* We moved the window start towards ZV, so PT may be now |
4977 | in the scroll margin at the top. */ | |
4978 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4979 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4980 | && (NILP (Vscroll_preserve_screen_position) | |
4981 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4982 | /* We found PT at a legitimate height. Leave it alone. */ |
4983 | ; | |
66fe93d1 | 4984 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4985 | { |
fa3c3426 RS |
4986 | /* If we have a header line, take account of it. |
4987 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4988 | move_it_to (&it, -1, |
4989 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4990 | window_scroll_pixel_based_preserve_y |
4991 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4992 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4993 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4994 | } | |
4995 | else | |
5500c422 | 4996 | { |
5500c422 | 4997 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4998 | { |
4999 | int prev = it.current_y; | |
e4cc2dfc | 5000 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
5001 | if (prev == it.current_y) |
5002 | break; | |
5003 | } | |
5500c422 GM |
5004 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5005 | } | |
940f53e5 RS |
5006 | } |
5007 | else if (n < 0) | |
5008 | { | |
2452438f | 5009 | EMACS_INT charpos, bytepos; |
aed328bf | 5010 | int partial_p; |
940f53e5 | 5011 | |
66fe93d1 LT |
5012 | /* Save our position, for the |
5013 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5014 | charpos = IT_CHARPOS (it); |
5015 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5016 | |
940f53e5 RS |
5017 | /* We moved the window start towards BEGV, so PT may be now |
5018 | in the scroll margin at the bottom. */ | |
5019 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5020 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5021 | - this_scroll_margin - 1), | |
5022 | -1, | |
940f53e5 RS |
5023 | MOVE_TO_POS | MOVE_TO_Y); |
5024 | ||
aed328bf KS |
5025 | /* Save our position, in case it's correct. */ |
5026 | charpos = IT_CHARPOS (it); | |
5027 | bytepos = IT_BYTEPOS (it); | |
5028 | ||
5029 | /* See if point is on a partially visible line at the end. */ | |
5030 | if (it.what == IT_EOB) | |
5031 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5032 | else | |
5033 | { | |
e4cc2dfc | 5034 | move_it_by_lines (&it, 1); |
aed328bf KS |
5035 | partial_p = it.current_y > it.last_visible_y; |
5036 | } | |
5037 | ||
bdf4ec93 RS |
5038 | if (charpos == PT && !partial_p |
5039 | && (NILP (Vscroll_preserve_screen_position) | |
5040 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5041 | /* We found PT before we found the display margin, so PT is ok. */ |
5042 | ; | |
66fe93d1 | 5043 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5044 | { |
5045 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5046 | start_display (&it, w, start); | |
c525d842 CY |
5047 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5048 | here because we called start_display again and did not | |
5049 | alter it.current_y this time. */ | |
c876b227 SM |
5050 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5051 | window_scroll_pixel_based_preserve_y, -1, | |
5052 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5053 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5054 | } | |
5055 | else | |
5056 | { | |
aed328bf | 5057 | if (partial_p) |
5cdb3cf3 MB |
5058 | /* The last line was only partially visible, so back up two |
5059 | lines to make sure we're on a fully visible line. */ | |
5060 | { | |
e4cc2dfc | 5061 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
5062 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5063 | } | |
5064 | else | |
5065 | /* No, the position we saved is OK, so use it. */ | |
5066 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5067 | } |
5068 | } | |
5069 | } | |
5070 | ||
5071 | ||
5072 | /* Implementation of window_scroll that works based on screen lines. | |
5073 | See the comment of window_scroll for parameter descriptions. */ | |
5074 | ||
5075 | static void | |
971de7fb | 5076 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
5077 | { |
5078 | register struct window *w = XWINDOW (window); | |
2452438f EZ |
5079 | register EMACS_INT opoint = PT, opoint_byte = PT_BYTE; |
5080 | register EMACS_INT pos, pos_byte; | |
7ab12479 JB |
5081 | register int ht = window_internal_height (w); |
5082 | register Lisp_Object tem; | |
5083 | int lose; | |
5500c422 | 5084 | Lisp_Object bolp; |
2452438f | 5085 | EMACS_INT startpos; |
c876b227 | 5086 | Lisp_Object original_pos = Qnil; |
101d1605 | 5087 | |
d4e7cf01 GM |
5088 | /* If scrolling screen-fulls, compute the number of lines to |
5089 | scroll from the window's height. */ | |
5090 | if (whole) | |
5091 | n *= max (1, ht - next_screen_context_lines); | |
5092 | ||
101d1605 RS |
5093 | startpos = marker_position (w->start); |
5094 | ||
c876b227 SM |
5095 | if (!NILP (Vscroll_preserve_screen_position)) |
5096 | { | |
5097 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
5098 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
5099 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
5100 | { |
5101 | struct position posit | |
5102 | = *compute_motion (startpos, 0, 0, 0, | |
5103 | PT, ht, 0, | |
5104 | -1, XINT (w->hscroll), | |
5105 | 0, w); | |
5106 | window_scroll_preserve_vpos = posit.vpos; | |
5107 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5108 | } | |
5109 | ||
5110 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5111 | make_number (window_scroll_preserve_vpos)); | |
5112 | } | |
0a1f771a | 5113 | |
d834a2e9 | 5114 | XSETFASTINT (tem, PT); |
6ffdb539 | 5115 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5116 | |
265a9e55 | 5117 | if (NILP (tem)) |
7ab12479 | 5118 | { |
cd2be1dd | 5119 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5120 | startpos = PT; |
7ab12479 JB |
5121 | } |
5122 | ||
345d45b2 | 5123 | SET_PT (startpos); |
5ce7b543 | 5124 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5125 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5126 | pos = PT; |
b73ea88e | 5127 | pos_byte = PT_BYTE; |
7ab12479 | 5128 | bolp = Fbolp (); |
b73ea88e | 5129 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5130 | |
5131 | if (lose) | |
f8026fd8 JB |
5132 | { |
5133 | if (noerror) | |
5134 | return; | |
5135 | else | |
ba96a5cf | 5136 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5137 | } |
7ab12479 JB |
5138 | |
5139 | if (pos < ZV) | |
7ab12479 | 5140 | { |
0c7da84e RS |
5141 | int this_scroll_margin = scroll_margin; |
5142 | ||
5143 | /* Don't use a scroll margin that is negative or too large. */ | |
5144 | if (this_scroll_margin < 0) | |
5145 | this_scroll_margin = 0; | |
5146 | ||
949cf20f KS |
5147 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5148 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5149 | |
b73ea88e | 5150 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5151 | w->start_at_line_beg = bolp; |
5152 | w->update_mode_line = Qt; | |
d834a2e9 | 5153 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5154 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5155 | /* Set force_start so that redisplay_window will run |
5156 | the window-scroll-functions. */ | |
5157 | w->force_start = Qt; | |
0c7da84e | 5158 | |
bdf4ec93 RS |
5159 | if (!NILP (Vscroll_preserve_screen_position) |
5160 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5161 | { |
b73ea88e | 5162 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5163 | Fvertical_motion (original_pos, window); |
0c7da84e | 5164 | } |
101d1605 RS |
5165 | /* If we scrolled forward, put point enough lines down |
5166 | that it is outside the scroll margin. */ | |
5167 | else if (n > 0) | |
0c7da84e | 5168 | { |
101d1605 RS |
5169 | int top_margin; |
5170 | ||
5171 | if (this_scroll_margin > 0) | |
5172 | { | |
b73ea88e | 5173 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5174 | Fvertical_motion (make_number (this_scroll_margin), window); |
5175 | top_margin = PT; | |
5176 | } | |
5177 | else | |
5178 | top_margin = pos; | |
5179 | ||
5180 | if (top_margin <= opoint) | |
b73ea88e | 5181 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5182 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5183 | { |
b73ea88e | 5184 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5185 | Fvertical_motion (original_pos, window); |
101d1605 | 5186 | } |
9317a85d | 5187 | else |
335406fc | 5188 | SET_PT (top_margin); |
0c7da84e | 5189 | } |
101d1605 | 5190 | else if (n < 0) |
7ab12479 | 5191 | { |
101d1605 RS |
5192 | int bottom_margin; |
5193 | ||
0c7da84e RS |
5194 | /* If we scrolled backward, put point near the end of the window |
5195 | but not within the scroll margin. */ | |
b73ea88e | 5196 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5197 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5198 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5199 | bottom_margin = PT; | |
5200 | else | |
5201 | bottom_margin = PT + 1; | |
5202 | ||
5203 | if (bottom_margin > opoint) | |
b73ea88e | 5204 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5205 | else |
101d1605 | 5206 | { |
5500c422 | 5207 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5208 | { |
b73ea88e | 5209 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5210 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5211 | } |
5212 | else | |
5213 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5214 | } |
7ab12479 JB |
5215 | } |
5216 | } | |
5217 | else | |
f8026fd8 JB |
5218 | { |
5219 | if (noerror) | |
5220 | return; | |
5221 | else | |
ba96a5cf | 5222 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5223 | } |
7ab12479 | 5224 | } |
5500c422 GM |
5225 | |
5226 | ||
5227 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5228 | screen-full which is defined as the height of the window minus | |
5229 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5230 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5231 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5232 | |
5233 | static void | |
971de7fb | 5234 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 5235 | { |
331379bf | 5236 | int count = SPECPDL_INDEX (); |
7ab12479 | 5237 | |
1ea40aa2 | 5238 | xassert (eabs (direction) == 1); |
5500c422 GM |
5239 | |
5240 | /* If selected window's buffer isn't current, make it current for | |
5241 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5242 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5243 | { |
5244 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5245 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5246 | |
5247 | /* Make redisplay consider other windows than just selected_window. */ | |
5248 | ++windows_or_buffers_changed; | |
95605e15 | 5249 | } |
7ab12479 | 5250 | |
265a9e55 | 5251 | if (NILP (n)) |
d4e7cf01 | 5252 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5253 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5254 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5255 | else |
5256 | { | |
5257 | n = Fprefix_numeric_value (n); | |
101d1605 | 5258 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5259 | } |
95605e15 JB |
5260 | |
5261 | unbind_to (count, Qnil); | |
7ab12479 JB |
5262 | } |
5263 | ||
e0965597 | 5264 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5265 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5266 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5267 | A near full screen is `next-screen-context-lines' less than a full screen. |
5268 | Negative ARG means scroll downward. | |
5269 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5270 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5271 | (Lisp_Object arg) |
7ab12479 | 5272 | { |
413430c5 | 5273 | scroll_command (arg, 1); |
7ab12479 JB |
5274 | return Qnil; |
5275 | } | |
5276 | ||
e0965597 | 5277 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5278 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5279 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5280 | A near full screen is `next-screen-context-lines' less than a full screen. |
5281 | Negative ARG means scroll upward. | |
5282 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5283 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5284 | (Lisp_Object arg) |
7ab12479 | 5285 | { |
413430c5 | 5286 | scroll_command (arg, -1); |
7ab12479 JB |
5287 | return Qnil; |
5288 | } | |
ccd0664b RS |
5289 | \f |
5290 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5291 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5292 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5293 | showing that buffer is used. |
5294 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5295 | specifies the window. This takes precedence over | |
5296 | `other-window-scroll-buffer'. */) | |
5842a27b | 5297 | (void) |
7ab12479 | 5298 | { |
ccd0664b | 5299 | Lisp_Object window; |
7ab12479 JB |
5300 | |
5301 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5302 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5303 | window = Vminibuf_scroll_window; |
5304 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5305 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5306 | { |
5307 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5308 | if (NILP (window)) |
87478b52 | 5309 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5310 | } |
5311 | else | |
dbc4e1c1 JB |
5312 | { |
5313 | /* Nothing specified; look for a neighboring window on the same | |
5314 | frame. */ | |
5315 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5316 | ||
5317 | if (EQ (window, selected_window)) | |
5318 | /* That didn't get us anywhere; look for a window on another | |
5319 | visible frame. */ | |
5320 | do | |
5321 | window = Fnext_window (window, Qnil, Qt); | |
5322 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5323 | && ! EQ (window, selected_window)); | |
5324 | } | |
5325 | ||
b7826503 | 5326 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5327 | |
5328 | if (EQ (window, selected_window)) | |
5329 | error ("There is no other window"); | |
5330 | ||
ccd0664b RS |
5331 | return window; |
5332 | } | |
5333 | ||
5334 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5335 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5336 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5337 | The next window is the one below the current one; or the one at the top | |
5338 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5339 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5340 | When calling from a program, supply as argument a number, nil, or `-'. | |
5341 | ||
fdb82f93 | 5342 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5343 | showing that buffer, popping the buffer up if necessary. |
5344 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5345 | specifies the window to scroll. This takes precedence over | |
5346 | `other-window-scroll-buffer'. */) | |
5842a27b | 5347 | (Lisp_Object arg) |
ccd0664b | 5348 | { |
d4e7cf01 GM |
5349 | Lisp_Object window; |
5350 | struct window *w; | |
331379bf | 5351 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5352 | |
5353 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5354 | w = XWINDOW (window); |
7ab12479 JB |
5355 | |
5356 | /* Don't screw up if window_scroll gets an error. */ | |
5357 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5358 | ++windows_or_buffers_changed; |
7ab12479 JB |
5359 | |
5360 | Fset_buffer (w->buffer); | |
5361 | SET_PT (marker_position (w->pointm)); | |
5362 | ||
413430c5 | 5363 | if (NILP (arg)) |
d4e7cf01 | 5364 | window_scroll (window, 1, 1, 1); |
413430c5 | 5365 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5366 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5367 | else |
5368 | { | |
413430c5 EN |
5369 | if (CONSP (arg)) |
5370 | arg = Fcar (arg); | |
b7826503 | 5371 | CHECK_NUMBER (arg); |
101d1605 | 5372 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5373 | } |
5374 | ||
b73ea88e | 5375 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5376 | unbind_to (count, Qnil); |
7ab12479 JB |
5377 | |
5378 | return Qnil; | |
5379 | } | |
5380 | \f | |
e0965597 | 5381 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5382 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5383 | Default for ARG is window width minus 2. |
5384 | Value is the total amount of leftward horizontal scrolling in | |
5385 | effect after the change. | |
23fe745a | 5386 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5387 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5388 | will not scroll a window to a column less than the value returned |
dc297565 | 5389 | by this function. This happens in an interactive call. */) |
5842a27b | 5390 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5391 | { |
c67fa410 GM |
5392 | Lisp_Object result; |
5393 | int hscroll; | |
5394 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5395 | |
265a9e55 | 5396 | if (NILP (arg)) |
949cf20f | 5397 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5398 | else |
5399 | arg = Fprefix_numeric_value (arg); | |
5400 | ||
c67fa410 GM |
5401 | hscroll = XINT (w->hscroll) + XINT (arg); |
5402 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5403 | ||
dc297565 | 5404 | if (!NILP (set_minimum)) |
c67fa410 GM |
5405 | w->min_hscroll = w->hscroll; |
5406 | ||
5407 | return result; | |
7ab12479 JB |
5408 | } |
5409 | ||
e0965597 | 5410 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5411 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5412 | Default for ARG is window width minus 2. |
5413 | Value is the total amount of leftward horizontal scrolling in | |
5414 | effect after the change. | |
23fe745a | 5415 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5416 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5417 | will not scroll a window to a column less than the value returned |
dc297565 | 5418 | by this function. This happens in an interactive call. */) |
5842a27b | 5419 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5420 | { |
c67fa410 GM |
5421 | Lisp_Object result; |
5422 | int hscroll; | |
5423 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5424 | |
265a9e55 | 5425 | if (NILP (arg)) |
949cf20f | 5426 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5427 | else |
5428 | arg = Fprefix_numeric_value (arg); | |
5429 | ||
c67fa410 GM |
5430 | hscroll = XINT (w->hscroll) - XINT (arg); |
5431 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5432 | |
dc297565 | 5433 | if (!NILP (set_minimum)) |
c67fa410 GM |
5434 | w->min_hscroll = w->hscroll; |
5435 | ||
5436 | return result; | |
7ab12479 JB |
5437 | } |
5438 | ||
fa832261 KS |
5439 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5440 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5441 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5442 | (void) |
fa832261 KS |
5443 | { |
5444 | if (minibuf_level > 0 | |
5445 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5446 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5447 | return minibuf_selected_window; | |
5448 | ||
5449 | return Qnil; | |
5450 | } | |
5451 | ||
12c8b416 GM |
5452 | /* Value is the number of lines actually displayed in window W, |
5453 | as opposed to its height. */ | |
5454 | ||
5455 | static int | |
971de7fb | 5456 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5457 | { |
5458 | struct it it; | |
5459 | struct text_pos start; | |
5460 | int height = window_box_height (w); | |
5461 | struct buffer *old_buffer; | |
5462 | int bottom_y; | |
5463 | ||
5464 | if (XBUFFER (w->buffer) != current_buffer) | |
5465 | { | |
5466 | old_buffer = current_buffer; | |
5467 | set_buffer_internal (XBUFFER (w->buffer)); | |
5468 | } | |
5469 | else | |
5470 | old_buffer = NULL; | |
5471 | ||
521b203e GM |
5472 | /* In case W->start is out of the accessible range, do something |
5473 | reasonable. This happens in Info mode when Info-scroll-down | |
5474 | calls (recenter -1) while W->start is 1. */ | |
5475 | if (XMARKER (w->start)->charpos < BEGV) | |
5476 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5477 | else if (XMARKER (w->start)->charpos > ZV) | |
5478 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5479 | else | |
5480 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5481 | ||
12c8b416 GM |
5482 | start_display (&it, w, start); |
5483 | move_it_vertically (&it, height); | |
c8bc6f65 | 5484 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5485 | |
1de65f51 RS |
5486 | /* rms: On a non-window display, |
5487 | the value of it.vpos at the bottom of the screen | |
5488 | seems to be 1 larger than window_box_height (w). | |
5489 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5490 | when ZV is on the last screen line | |
5491 | moves to the previous screen line instead of the last one. */ | |
5492 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5493 | height++; | |
5494 | ||
12c8b416 GM |
5495 | /* Add in empty lines at the bottom of the window. */ |
5496 | if (bottom_y < height) | |
5497 | { | |
949cf20f | 5498 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5499 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5500 | } |
5501 | ||
c8bc6f65 GM |
5502 | if (old_buffer) |
5503 | set_buffer_internal (old_buffer); | |
5504 | ||
12c8b416 GM |
5505 | return it.vpos; |
5506 | } | |
5507 | ||
5508 | ||
a7ca3326 | 5509 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5510 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5511 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5512 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5513 | bottom of the window. (ARG should be less than the height of the window.) |
5514 | ||
666e158e MB |
5515 | If ARG is omitted or nil, then recenter with point on the middle line of |
5516 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5517 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5518 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5519 | height needed); if `recenter-redisplay' has the special value `tty', | |
5520 | then only tty frame are redrawn. | |
7d1d98ee | 5521 | |
fdb82f93 PJ |
5522 | Just C-u as prefix means put point in the center of the window |
5523 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5524 | (register Lisp_Object arg) |
7ab12479 | 5525 | { |
6df47b59 | 5526 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5527 | struct buffer *buf = XBUFFER (w->buffer); |
5528 | struct buffer *obuf = current_buffer; | |
6df47b59 | 5529 | int center_p = 0; |
2452438f | 5530 | EMACS_INT charpos, bytepos; |
d6550a9f | 5531 | int iarg IF_LINT (= 0); |
f6b43440 | 5532 | int this_scroll_margin; |
7ab12479 | 5533 | |
0fa5d25b RS |
5534 | /* If redisplay is suppressed due to an error, try again. */ |
5535 | obuf->display_error_modiff = 0; | |
5536 | ||
413430c5 | 5537 | if (NILP (arg)) |
7ab12479 | 5538 | { |
666e158e MB |
5539 | if (!NILP (Vrecenter_redisplay) |
5540 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5541 | || !NILP (Ftty_type (selected_frame)))) | |
5542 | { | |
5543 | int i; | |
f02d6d5c | 5544 | |
666e158e MB |
5545 | /* Invalidate pixel data calculated for all compositions. */ |
5546 | for (i = 0; i < n_compositions; i++) | |
5547 | composition_table[i]->font = NULL; | |
7ab12479 | 5548 | |
666e158e MB |
5549 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5550 | ||
5551 | Fredraw_frame (WINDOW_FRAME (w)); | |
5552 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5553 | } | |
7d1d98ee | 5554 | |
6df47b59 | 5555 | center_p = 1; |
7ab12479 | 5556 | } |
413430c5 | 5557 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5558 | center_p = 1; |
7ab12479 JB |
5559 | else |
5560 | { | |
413430c5 | 5561 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5562 | CHECK_NUMBER (arg); |
ae12ecd7 | 5563 | iarg = XINT (arg); |
7ab12479 JB |
5564 | } |
5565 | ||
478292ed | 5566 | set_buffer_internal (buf); |
7ab12479 | 5567 | |
f6b43440 RS |
5568 | /* Do this after making BUF current |
5569 | in case scroll_margin is buffer-local. */ | |
5570 | this_scroll_margin = max (0, scroll_margin); | |
5571 | this_scroll_margin = min (this_scroll_margin, | |
5572 | XFASTINT (w->total_lines) / 4); | |
5573 | ||
521b203e | 5574 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5575 | have variable-height lines and centering point on the basis of |
5576 | line counts would lead to strange effects. */ | |
521b203e | 5577 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5578 | { |
6df47b59 GM |
5579 | if (center_p) |
5580 | { | |
521b203e GM |
5581 | struct it it; |
5582 | struct text_pos pt; | |
177c0ea7 | 5583 | |
521b203e GM |
5584 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5585 | start_display (&it, w, pt); | |
f204989e | 5586 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5587 | charpos = IT_CHARPOS (it); |
5588 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5589 | } |
f6b43440 | 5590 | else if (iarg < 0) |
6df47b59 | 5591 | { |
521b203e GM |
5592 | struct it it; |
5593 | struct text_pos pt; | |
f6b43440 | 5594 | int nlines = -iarg; |
f204989e KS |
5595 | int extra_line_spacing; |
5596 | int h = window_box_height (w); | |
177c0ea7 | 5597 | |
f6b43440 RS |
5598 | iarg = - max (-iarg, this_scroll_margin); |
5599 | ||
521b203e GM |
5600 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5601 | start_display (&it, w, pt); | |
f204989e KS |
5602 | |
5603 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5604 | move_it_by_lines (&it, 0); |
521b203e | 5605 | |
d466fa4d | 5606 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5607 | height minus what's displayed in the line containing PT, |
5608 | and the lines below. */ | |
f204989e KS |
5609 | it.current_y = 0; |
5610 | it.vpos = 0; | |
e4cc2dfc | 5611 | move_it_by_lines (&it, nlines); |
d466fa4d | 5612 | |
f204989e KS |
5613 | if (it.vpos == nlines) |
5614 | h -= it.current_y; | |
5615 | else | |
5616 | { | |
5617 | /* Last line has no newline */ | |
5618 | h -= line_bottom_y (&it); | |
5619 | it.vpos++; | |
5620 | } | |
5621 | ||
5622 | /* Don't reserve space for extra line spacing of last line. */ | |
5623 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5624 | |
5625 | /* If we can't move down NLINES lines because we hit | |
5626 | the end of the buffer, count in some empty lines. */ | |
5627 | if (it.vpos < nlines) | |
f204989e KS |
5628 | { |
5629 | nlines -= it.vpos; | |
5630 | extra_line_spacing = it.extra_line_spacing; | |
5631 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5632 | } | |
5633 | if (h <= 0) | |
5634 | return Qnil; | |
201c831a | 5635 | |
f204989e | 5636 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5637 | start_display (&it, w, pt); |
f204989e KS |
5638 | it.current_y = 0; |
5639 | move_it_vertically_backward (&it, h); | |
5640 | ||
5641 | /* If extra line spacing is present, we may move too far | |
5642 | back. This causes the last line to be only partially | |
5643 | visible (which triggers redisplay to recenter that line | |
5644 | in the middle), so move forward. | |
5645 | But ignore extra line spacing on last line, as it is not | |
5646 | considered to be part of the visible height of the line. | |
5647 | */ | |
5648 | h += extra_line_spacing; | |
5649 | while (-it.current_y > h) | |
e4cc2dfc | 5650 | move_it_by_lines (&it, 1); |
f204989e | 5651 | |
521b203e GM |
5652 | charpos = IT_CHARPOS (it); |
5653 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5654 | } |
521b203e GM |
5655 | else |
5656 | { | |
5657 | struct position pos; | |
f6b43440 | 5658 | |
f6b43440 RS |
5659 | iarg = max (iarg, this_scroll_margin); |
5660 | ||
5661 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5662 | charpos = pos.bufpos; |
5663 | bytepos = pos.bytepos; | |
5664 | } | |
5665 | } | |
5666 | else | |
5667 | { | |
5668 | struct position pos; | |
5669 | int ht = window_internal_height (w); | |
5670 | ||
5671 | if (center_p) | |
a4429c5b | 5672 | iarg = ht / 2; |
f567c488 KS |
5673 | else if (iarg < 0) |
5674 | iarg += ht; | |
f6b43440 RS |
5675 | |
5676 | /* Don't let it get into the margin at either top or bottom. */ | |
5677 | iarg = max (iarg, this_scroll_margin); | |
5678 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5679 | |
f6b43440 | 5680 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5681 | charpos = pos.bufpos; |
5682 | bytepos = pos.bytepos; | |
5683 | } | |
5684 | ||
5685 | /* Set the new window start. */ | |
5686 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5687 | w->window_end_valid = Qnil; |
177c0ea7 | 5688 | |
95605b1b RS |
5689 | w->optional_new_start = Qt; |
5690 | ||
6df47b59 GM |
5691 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5692 | w->start_at_line_beg = Qt; | |
5693 | else | |
5694 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5695 | |
478292ed | 5696 | set_buffer_internal (obuf); |
7ab12479 JB |
5697 | return Qnil; |
5698 | } | |
b7617575 GM |
5699 | |
5700 | ||
81fe0836 | 5701 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5702 | 0, 1, 0, |
5703 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5704 | WINDOW defaults to the selected window. |
8fef9de1 | 5705 | |
f039b2d2 CY |
5706 | The return value does not include the mode line, any header line, nor |
5707 | any partial-height lines in the text display area. */) | |
5842a27b | 5708 | (Lisp_Object window) |
81fe0836 MB |
5709 | { |
5710 | struct window *w = decode_window (window); | |
5711 | int pixel_height = window_box_height (w); | |
949cf20f | 5712 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5713 | return make_number (line_height); |
5714 | } | |
5715 | ||
5716 | ||
7ab12479 JB |
5717 | \f |
5718 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5719 | 1, 1, "P", |
5720 | doc: /* Position point relative to window. | |
5721 | With no argument, position point at center of window. | |
5722 | An argument specifies vertical position within the window; | |
5723 | zero means top of window, negative means relative to bottom of window. */) | |
5842a27b | 5724 | (Lisp_Object arg) |
7ab12479 | 5725 | { |
b7617575 GM |
5726 | struct window *w = XWINDOW (selected_window); |
5727 | int lines, start; | |
540b6aa0 | 5728 | Lisp_Object window; |
f6b43440 RS |
5729 | #if 0 |
5730 | int this_scroll_margin; | |
5731 | #endif | |
7ab12479 | 5732 | |
794b75c7 SM |
5733 | if (!(BUFFERP (w->buffer) |
5734 | && XBUFFER (w->buffer) == current_buffer)) | |
5735 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer | |
5736 | when passed below to set_marker_both. */ | |
5737 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5738 | |
b7617575 | 5739 | window = selected_window; |
7ab12479 JB |
5740 | start = marker_position (w->start); |
5741 | if (start < BEGV || start > ZV) | |
5742 | { | |
b7617575 | 5743 | int height = window_internal_height (w); |
cd2be1dd | 5744 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5745 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5746 | w->start_at_line_beg = Fbolp (); |
5747 | w->force_start = Qt; | |
5748 | } | |
5749 | else | |
b73ea88e | 5750 | Fgoto_char (w->start); |
7ab12479 | 5751 | |
b7617575 | 5752 | lines = displayed_window_lines (w); |
f6b43440 RS |
5753 | |
5754 | #if 0 | |
5755 | this_scroll_margin = max (0, scroll_margin); | |
5756 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5757 | #endif | |
5758 | ||
b7617575 GM |
5759 | if (NILP (arg)) |
5760 | XSETFASTINT (arg, lines / 2); | |
5761 | else | |
5762 | { | |
f6b43440 RS |
5763 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5764 | ||
5765 | if (iarg < 0) | |
5766 | iarg = iarg + lines; | |
5767 | ||
5768 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5769 | to a place inside the scroll margins (which would cause the | |
5770 | next redisplay to scroll). I wrote this code, but then concluded | |
5771 | it is probably better not to install it. However, it is here | |
5772 | inside #if 0 so as not to lose it. -- rms. */ | |
5773 | ||
5774 | /* Don't let it get into the margin at either top or bottom. */ | |
5775 | iarg = max (iarg, this_scroll_margin); | |
5776 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5777 | #endif | |
5778 | ||
5779 | arg = make_number (iarg); | |
b7617575 GM |
5780 | } |
5781 | ||
c8bc6f65 | 5782 | /* Skip past a partially visible first line. */ |
163784df | 5783 | if (w->vscroll) |
163784df MB |
5784 | XSETINT (arg, XINT (arg) + 1); |
5785 | ||
540b6aa0 | 5786 | return Fvertical_motion (arg, window); |
7ab12479 | 5787 | } |
5500c422 GM |
5788 | |
5789 | ||
7ab12479 | 5790 | \f |
5500c422 GM |
5791 | /*********************************************************************** |
5792 | Window Configuration | |
5793 | ***********************************************************************/ | |
5794 | ||
7ab12479 JB |
5795 | struct save_window_data |
5796 | { | |
b102ceb1 | 5797 | struct vectorlike_header header; |
bdc727bf | 5798 | Lisp_Object selected_frame; |
7ab12479 JB |
5799 | Lisp_Object current_window; |
5800 | Lisp_Object current_buffer; | |
5801 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5802 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5803 | Lisp_Object root_window; |
bdc727bf | 5804 | Lisp_Object focus_frame; |
cbff28e8 RS |
5805 | /* A vector, each of whose elements is a struct saved_window |
5806 | for one window. */ | |
7ab12479 | 5807 | Lisp_Object saved_windows; |
b05b4e27 SM |
5808 | |
5809 | /* All fields above are traced by the GC. | |
5810 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5811 | ||
5812 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5813 | int frame_tool_bar_lines; | |
7ab12479 | 5814 | }; |
ff06df24 | 5815 | |
cbff28e8 | 5816 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5817 | struct saved_window |
ea68264b | 5818 | { |
b102ceb1 | 5819 | struct vectorlike_header header; |
ea68264b GM |
5820 | Lisp_Object window; |
5821 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5822 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5823 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5824 | Lisp_Object parent, prev; |
5825 | Lisp_Object start_at_line_beg; | |
5826 | Lisp_Object display_table; | |
949cf20f KS |
5827 | Lisp_Object orig_top_line, orig_total_lines; |
5828 | Lisp_Object left_margin_cols, right_margin_cols; | |
5829 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5830 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 5831 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
5832 | }; |
5833 | ||
7ab12479 JB |
5834 | #define SAVED_WINDOW_N(swv,n) \ |
5835 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5836 | ||
5837 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5838 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5839 | (Lisp_Object object) |
7ab12479 | 5840 | { |
6ad0381c | 5841 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5842 | } |
5843 | ||
3f8ab7bd | 5844 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5845 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5846 | (Lisp_Object config) |
3f8ab7bd RS |
5847 | { |
5848 | register struct save_window_data *data; | |
5849 | struct Lisp_Vector *saved_windows; | |
5850 | ||
663fbbba | 5851 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5852 | |
5853 | data = (struct save_window_data *) XVECTOR (config); | |
5854 | saved_windows = XVECTOR (data->saved_windows); | |
5855 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5856 | } | |
5857 | ||
a7ca3326 | 5858 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5859 | Sset_window_configuration, 1, 1, 0, |
5860 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5861 | CONFIGURATION must be a value previously returned | |
5862 | by `current-window-configuration' (which see). | |
5863 | If CONFIGURATION was made from a frame that is now deleted, | |
5864 | only frame-independent values can be restored. In this case, | |
5865 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5866 | (Lisp_Object configuration) |
7ab12479 | 5867 | { |
7ab12479 JB |
5868 | register struct save_window_data *data; |
5869 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5870 | Lisp_Object new_current_buffer; |
fd482be5 | 5871 | Lisp_Object frame; |
44fa5b1e | 5872 | FRAME_PTR f; |
2452438f | 5873 | EMACS_INT old_point = -1; |
7ab12479 | 5874 | |
663fbbba | 5875 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5876 | |
2f83aebe | 5877 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5878 | saved_windows = XVECTOR (data->saved_windows); |
5879 | ||
7ab12479 | 5880 | new_current_buffer = data->current_buffer; |
4b4deea2 | 5881 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
7ab12479 | 5882 | new_current_buffer = Qnil; |
72695e47 | 5883 | else |
73cadfc1 DK |
5884 | { |
5885 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5886 | /* The code further down "preserves point" by saving here PT in |
5887 | old_point and then setting it later back into PT. When the | |
5888 | current-selected-window and the final-selected-window both show | |
5889 | the current buffer, this suffers from the problem that the | |
5890 | current PT is the window-point of the current-selected-window, | |
5891 | while the final PT is the point of the final-selected-window, so | |
5892 | this copy from one PT to the other would end up moving the | |
5893 | window-point of the final-selected-window to the window-point of | |
5894 | the current-selected-window. So we have to be careful which | |
5895 | point of the current-buffer we copy into old_point. */ | |
5896 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5897 | && WINDOWP (selected_window) | |
5898 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5899 | && !EQ (selected_window, data->current_window)) | |
5900 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5901 | else | |
5902 | old_point = PT; | |
73cadfc1 | 5903 | else |
203eb0aa SM |
5904 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5905 | point in new_current_buffer as of the last time this buffer was | |
5906 | used. This can be non-deterministic since it can be changed by | |
5907 | things like jit-lock by mere temporary selection of some random | |
5908 | window that happens to show this buffer. | |
5909 | So if possible we want this arbitrary choice of "which point" to | |
5910 | be the one from the to-be-selected-window so as to prevent this | |
5911 | window's cursor from being copied from another window. */ | |
5912 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5913 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5914 | && !EQ (selected_window, data->current_window)) | |
5915 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5916 | else | |
5917 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5918 | } |
7ab12479 | 5919 | |
fd482be5 JB |
5920 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5921 | f = XFRAME (frame); | |
177c0ea7 | 5922 | |
fd482be5 JB |
5923 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5924 | However, there is other stuff we should still try to do below. */ | |
5925 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5926 | { |
fd482be5 JB |
5927 | register struct window *w; |
5928 | register struct saved_window *p; | |
5500c422 GM |
5929 | struct window *root_window; |
5930 | struct window **leaf_windows; | |
5931 | int n_leaf_windows; | |
c4280705 | 5932 | int k, i, n; |
fd482be5 JB |
5933 | |
5934 | /* If the frame has been resized since this window configuration was | |
5935 | made, we change the frame to the size specified in the | |
5936 | configuration, restore the configuration, and then resize it | |
5937 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5938 | int previous_frame_lines = FRAME_LINES (f); |
5939 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5940 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5941 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5942 | |
d2b35234 RS |
5943 | /* The mouse highlighting code could get screwed up |
5944 | if it runs during this. */ | |
5945 | BLOCK_INPUT; | |
5946 | ||
b05b4e27 SM |
5947 | if (data->frame_lines != previous_frame_lines |
5948 | || data->frame_cols != previous_frame_cols) | |
5949 | change_frame_size (f, data->frame_lines, | |
5950 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5951 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5952 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5953 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5954 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5955 | make_number (0)); | |
4314246f | 5956 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5957 | if (data->frame_tool_bar_lines |
9ea173e8 | 5958 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5959 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5960 | make_number (0)); | |
4314246f | 5961 | #endif |
217f2871 | 5962 | #endif |
fd482be5 | 5963 | |
a46c0153 RS |
5964 | /* "Swap out" point from the selected window's buffer |
5965 | into the window itself. (Normally the pointm of the selected | |
5966 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5967 | restoring the window contents, and prevent it from |
5968 | being done later on when we select a new window. */ | |
596ae0cf RS |
5969 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5970 | { | |
5971 | w = XWINDOW (selected_window); | |
5972 | set_marker_both (w->pointm, | |
5973 | w->buffer, | |
5974 | BUF_PT (XBUFFER (w->buffer)), | |
5975 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5976 | } | |
5977 | ||
fd482be5 | 5978 | windows_or_buffers_changed++; |
29aeee73 | 5979 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5980 | |
5500c422 | 5981 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5982 | is a serious redisplay flickering problem. What we would |
5500c422 | 5983 | really like to do is to free only those matrices not reused |
9d14503e | 5984 | below. */ |
5500c422 GM |
5985 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5986 | leaf_windows | |
5987 | = (struct window **) alloca (count_windows (root_window) | |
5988 | * sizeof (struct window *)); | |
5989 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5990 | ||
fd482be5 JB |
5991 | /* Kludge Alert! |
5992 | Mark all windows now on frame as "deleted". | |
5993 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5994 | |
fd482be5 JB |
5995 | Save their current buffers in their height fields, since we may |
5996 | need it later, if a buffer saved in the configuration is now | |
5997 | dead. */ | |
5998 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
5999 | ||
eab3844f | 6000 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
6001 | { |
6002 | p = SAVED_WINDOW_N (saved_windows, k); | |
6003 | w = XWINDOW (p->window); | |
6004 | w->next = Qnil; | |
7ab12479 | 6005 | |
fd482be5 JB |
6006 | if (!NILP (p->parent)) |
6007 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6008 | XFASTINT (p->parent))->window; | |
6009 | else | |
6010 | w->parent = Qnil; | |
7ab12479 | 6011 | |
fd482be5 | 6012 | if (!NILP (p->prev)) |
7ab12479 | 6013 | { |
fd482be5 JB |
6014 | w->prev = SAVED_WINDOW_N (saved_windows, |
6015 | XFASTINT (p->prev))->window; | |
6016 | XWINDOW (w->prev)->next = p->window; | |
6017 | } | |
6018 | else | |
6019 | { | |
6020 | w->prev = Qnil; | |
6021 | if (!NILP (w->parent)) | |
6022 | { | |
949cf20f | 6023 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6024 | { |
6025 | XWINDOW (w->parent)->vchild = p->window; | |
6026 | XWINDOW (w->parent)->hchild = Qnil; | |
6027 | } | |
6028 | else | |
6029 | { | |
6030 | XWINDOW (w->parent)->hchild = p->window; | |
6031 | XWINDOW (w->parent)->vchild = Qnil; | |
6032 | } | |
6033 | } | |
6034 | } | |
6035 | ||
6036 | /* If we squirreled away the buffer in the window's height, | |
6037 | restore it now. */ | |
949cf20f KS |
6038 | if (BUFFERP (w->total_lines)) |
6039 | w->buffer = w->total_lines; | |
6040 | w->left_col = p->left_col; | |
6041 | w->top_line = p->top_line; | |
6042 | w->total_cols = p->total_cols; | |
6043 | w->total_lines = p->total_lines; | |
fd482be5 | 6044 | w->hscroll = p->hscroll; |
ea68264b | 6045 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6046 | w->display_table = p->display_table; |
949cf20f KS |
6047 | w->orig_top_line = p->orig_top_line; |
6048 | w->orig_total_lines = p->orig_total_lines; | |
6049 | w->left_margin_cols = p->left_margin_cols; | |
6050 | w->right_margin_cols = p->right_margin_cols; | |
6051 | w->left_fringe_width = p->left_fringe_width; | |
6052 | w->right_fringe_width = p->right_fringe_width; | |
6053 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6054 | w->scroll_bar_width = p->scroll_bar_width; | |
6055 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6056 | w->dedicated = p->dedicated; |
047aaeb9 | 6057 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6058 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6059 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6060 | |
6061 | /* Reinstall the saved buffer and pointers into it. */ | |
6062 | if (NILP (p->buffer)) | |
6063 | w->buffer = p->buffer; | |
6064 | else | |
6065 | { | |
4b4deea2 | 6066 | if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
fd482be5 JB |
6067 | /* If saved buffer is alive, install it. */ |
6068 | { | |
6069 | w->buffer = p->buffer; | |
6070 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6071 | set_marker_restricted (w->start, p->start, w->buffer); |
6072 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
4b4deea2 | 6073 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), |
b73ea88e | 6074 | p->mark, w->buffer); |
fd482be5 JB |
6075 | |
6076 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6077 | restore the location of point in the buffer which was |
6078 | current when the window configuration was recorded. */ | |
6b54027b RS |
6079 | if (!EQ (p->buffer, new_current_buffer) |
6080 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6081 | Fgoto_char (w->pointm); |
6082 | } | |
4b4deea2 | 6083 | else if (NILP (w->buffer) || NILP (BVAR (XBUFFER (w->buffer), name))) |
52a68e98 | 6084 | /* Else unless window has a live buffer, get one. */ |
7ab12479 | 6085 | { |
fd482be5 JB |
6086 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6087 | /* This will set the markers to beginning of visible | |
6088 | range. */ | |
6089 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6090 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6091 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6092 | } |
6093 | else | |
fd482be5 | 6094 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6095 | are real. */ |
7ab12479 | 6096 | { |
fd482be5 JB |
6097 | /* Set window markers at start of visible range. */ |
6098 | if (XMARKER (w->start)->buffer == 0) | |
6099 | set_marker_restricted (w->start, make_number (0), | |
6100 | w->buffer); | |
6101 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6102 | set_marker_restricted_both (w->pointm, w->buffer, |
6103 | BUF_PT (XBUFFER (w->buffer)), | |
6104 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6105 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6106 | } |
6107 | } | |
6108 | } | |
9ace597f | 6109 | |
fd482be5 | 6110 | FRAME_ROOT_WINDOW (f) = data->root_window; |
a46c0153 RS |
6111 | |
6112 | /* Arrange *not* to restore point in the buffer that was | |
6113 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6114 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6115 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6116 | make_number (old_point), |
243a5ce6 | 6117 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6118 | |
6dc1d2d3 MR |
6119 | /* In the following call to `select-window, prevent "swapping |
6120 | out point" in the old selected window using the buffer that | |
6121 | has been restored into it. We already swapped out that point | |
6122 | from that window's old buffer. */ | |
e6b84b30 | 6123 | select_window (data->current_window, Qnil, 1); |
4b4deea2 | 6124 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 6125 | = selected_window; |
7ab12479 | 6126 | |
db269683 | 6127 | if (NILP (data->focus_frame) |
017b2bad | 6128 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6129 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6130 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6131 | |
fd482be5 | 6132 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
6133 | if (previous_frame_lines != FRAME_LINES (f) |
6134 | || previous_frame_cols != FRAME_COLS (f)) | |
6135 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6136 | 0, 0, 0); |
e3678b64 | 6137 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6138 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6139 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6140 | make_number (0)); | |
4314246f | 6141 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6142 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6143 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6144 | make_number (0)); | |
4314246f | 6145 | #endif |
217f2871 | 6146 | #endif |
d2b35234 | 6147 | |
5500c422 | 6148 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6149 | for (i = n = 0; i < n_leaf_windows; ++i) |
6150 | { | |
6151 | if (NILP (leaf_windows[i]->buffer)) | |
6152 | { | |
6153 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6154 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6155 | && NILP (leaf_windows[i]->vchild)); |
6156 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6157 | } |
6158 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6159 | ++n; | |
6160 | } | |
177c0ea7 | 6161 | |
5500c422 GM |
6162 | adjust_glyphs (f); |
6163 | ||
d2b35234 | 6164 | UNBLOCK_INPUT; |
756b6edc | 6165 | |
478292ed RS |
6166 | /* Fselect_window will have made f the selected frame, so we |
6167 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6168 | selected window too, but that doesn't make the call to | |
6169 | Fselect_window above totally superfluous; it still sets f's | |
6170 | selected window. */ | |
6171 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6172 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6173 | |
eeca6f6f | 6174 | run_window_configuration_change_hook (f); |
478292ed | 6175 | } |
bdc727bf JB |
6176 | |
6177 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6178 | Fset_buffer (new_current_buffer); |
bdc727bf | 6179 | |
478292ed | 6180 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6181 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6182 | |
3f8ab7bd | 6183 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6184 | } |
6185 | ||
44fa5b1e | 6186 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6187 | by setting their buffers to nil. */ |
6188 | ||
fd482be5 | 6189 | void |
971de7fb | 6190 | delete_all_subwindows (register struct window *w) |
7ab12479 | 6191 | { |
265a9e55 | 6192 | if (!NILP (w->next)) |
7ab12479 | 6193 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6194 | if (!NILP (w->vchild)) |
7ab12479 | 6195 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6196 | if (!NILP (w->hchild)) |
7ab12479 | 6197 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6198 | |
949cf20f | 6199 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6200 | |
86e48436 RS |
6201 | if (!NILP (w->buffer)) |
6202 | unshow_buffer (w); | |
6203 | ||
605be8af JB |
6204 | /* We set all three of these fields to nil, to make sure that we can |
6205 | distinguish this dead window from any live window. Live leaf | |
6206 | windows will have buffer set, and combination windows will have | |
6207 | vchild or hchild set. */ | |
6208 | w->buffer = Qnil; | |
6209 | w->vchild = Qnil; | |
6210 | w->hchild = Qnil; | |
acf70840 GM |
6211 | |
6212 | Vwindow_list = Qnil; | |
7ab12479 JB |
6213 | } |
6214 | \f | |
6215 | static int | |
971de7fb | 6216 | count_windows (register struct window *window) |
7ab12479 JB |
6217 | { |
6218 | register int count = 1; | |
265a9e55 | 6219 | if (!NILP (window->next)) |
7ab12479 | 6220 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6221 | if (!NILP (window->vchild)) |
7ab12479 | 6222 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6223 | if (!NILP (window->hchild)) |
7ab12479 JB |
6224 | count += count_windows (XWINDOW (window->hchild)); |
6225 | return count; | |
6226 | } | |
6227 | ||
5500c422 | 6228 | |
177c0ea7 | 6229 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6230 | Value is last index + 1. */ |
6231 | ||
6232 | static int | |
971de7fb | 6233 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
6234 | { |
6235 | while (w) | |
6236 | { | |
6237 | if (!NILP (w->hchild)) | |
6238 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6239 | else if (!NILP (w->vchild)) | |
6240 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6241 | else |
5500c422 GM |
6242 | flat[i++] = w; |
6243 | ||
6244 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6245 | } | |
6246 | ||
6247 | return i; | |
6248 | } | |
6249 | ||
6250 | ||
6251 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6252 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6253 | can be returned. */ | |
6254 | ||
6255 | struct glyph * | |
971de7fb | 6256 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6257 | { |
6258 | struct glyph_row *row; | |
6259 | struct glyph *glyph; | |
6260 | ||
6261 | if (w->phys_cursor.vpos >= 0 | |
6262 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6263 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6264 | row->enabled_p) | |
6265 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6266 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6267 | else | |
6268 | glyph = NULL; | |
6269 | ||
6270 | return glyph; | |
6271 | } | |
6272 | ||
6273 | ||
7ab12479 | 6274 | static int |
971de7fb | 6275 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6276 | { |
6277 | register struct saved_window *p; | |
6278 | register struct window *w; | |
6279 | register Lisp_Object tem; | |
6280 | ||
265a9e55 | 6281 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6282 | { |
6283 | p = SAVED_WINDOW_N (vector, i); | |
6284 | w = XWINDOW (window); | |
6285 | ||
2a1893f4 | 6286 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6287 | p->window = window; |
6288 | p->buffer = w->buffer; | |
949cf20f KS |
6289 | p->left_col = w->left_col; |
6290 | p->top_line = w->top_line; | |
6291 | p->total_cols = w->total_cols; | |
6292 | p->total_lines = w->total_lines; | |
7ab12479 | 6293 | p->hscroll = w->hscroll; |
ea68264b | 6294 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6295 | p->display_table = w->display_table; |
949cf20f KS |
6296 | p->orig_top_line = w->orig_top_line; |
6297 | p->orig_total_lines = w->orig_total_lines; | |
6298 | p->left_margin_cols = w->left_margin_cols; | |
6299 | p->right_margin_cols = w->right_margin_cols; | |
6300 | p->left_fringe_width = w->left_fringe_width; | |
6301 | p->right_fringe_width = w->right_fringe_width; | |
6302 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6303 | p->scroll_bar_width = w->scroll_bar_width; | |
6304 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6305 | p->dedicated = w->dedicated; |
047aaeb9 | 6306 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6307 | if (!NILP (w->buffer)) |
7ab12479 JB |
6308 | { |
6309 | /* Save w's value of point in the window configuration. | |
6310 | If w is the selected window, then get the value of point | |
6311 | from the buffer; pointm is garbage in the selected window. */ | |
6312 | if (EQ (window, selected_window)) | |
6313 | { | |
6314 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6315 | set_marker_both (p->pointm, w->buffer, |
6316 | BUF_PT (XBUFFER (w->buffer)), | |
6317 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6318 | } |
6319 | else | |
eeb82665 | 6320 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6321 | |
eeb82665 | 6322 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6323 | p->start_at_line_beg = w->start_at_line_beg; |
6324 | ||
4b4deea2 | 6325 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6326 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6327 | } |
6328 | else | |
6329 | { | |
6330 | p->pointm = Qnil; | |
6331 | p->start = Qnil; | |
6332 | p->mark = Qnil; | |
6333 | p->start_at_line_beg = Qnil; | |
6334 | } | |
6335 | ||
265a9e55 | 6336 | if (NILP (w->parent)) |
7ab12479 JB |
6337 | p->parent = Qnil; |
6338 | else | |
6339 | p->parent = XWINDOW (w->parent)->temslot; | |
6340 | ||
265a9e55 | 6341 | if (NILP (w->prev)) |
7ab12479 JB |
6342 | p->prev = Qnil; |
6343 | else | |
6344 | p->prev = XWINDOW (w->prev)->temslot; | |
6345 | ||
265a9e55 | 6346 | if (!NILP (w->vchild)) |
7ab12479 | 6347 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6348 | if (!NILP (w->hchild)) |
7ab12479 JB |
6349 | i = save_window_save (w->hchild, vector, i); |
6350 | } | |
6351 | ||
6352 | return i; | |
6353 | } | |
6354 | ||
a7ca3326 | 6355 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6356 | Scurrent_window_configuration, 0, 1, 0, |
6357 | doc: /* Return an object representing the current window configuration of FRAME. | |
6358 | If FRAME is nil or omitted, use the selected frame. | |
6359 | This describes the number of windows, their sizes and current buffers, | |
6360 | and for each displayed buffer, where display starts, and the positions of | |
6361 | point and mark. An exception is made for point in the current buffer: | |
6362 | its value is -not- saved. | |
6363 | This also records the currently selected frame, and FRAME's focus | |
6364 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 6365 | (Lisp_Object frame) |
7ab12479 JB |
6366 | { |
6367 | register Lisp_Object tem; | |
6368 | register int n_windows; | |
6369 | register struct save_window_data *data; | |
6370 | register int i; | |
44fa5b1e | 6371 | FRAME_PTR f; |
43bad991 | 6372 | |
44fa5b1e | 6373 | if (NILP (frame)) |
1ae1a37d | 6374 | frame = selected_frame; |
b7826503 | 6375 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6376 | f = XFRAME (frame); |
7ab12479 | 6377 | |
44fa5b1e | 6378 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6379 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6380 | PVEC_WINDOW_CONFIGURATION); | |
6381 | ||
6382 | data->frame_cols = FRAME_COLS (f); | |
6383 | data->frame_lines = FRAME_LINES (f); | |
6384 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6385 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6386 | data->selected_frame = selected_frame; |
44fa5b1e | 6387 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6388 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6389 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6390 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6391 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6392 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6393 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6394 | data->saved_windows = tem; | |
6395 | for (i = 0; i < n_windows; i++) | |
6396 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6397 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6398 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6399 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6400 | return (tem); |
6401 | } | |
6402 | ||
94e16dd5 KS |
6403 | \f |
6404 | /*********************************************************************** | |
6405 | Window Split Tree | |
6406 | ***********************************************************************/ | |
6407 | ||
6408 | static Lisp_Object | |
971de7fb | 6409 | window_tree (struct window *w) |
94e16dd5 KS |
6410 | { |
6411 | Lisp_Object tail = Qnil; | |
6412 | Lisp_Object result = Qnil; | |
6413 | ||
6414 | while (w) | |
6415 | { | |
6416 | Lisp_Object wn; | |
6417 | ||
6418 | XSETWINDOW (wn, w); | |
6419 | if (!NILP (w->hchild)) | |
6420 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6421 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6422 | else if (!NILP (w->vchild)) |
6423 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6424 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6425 | |
6426 | if (NILP (result)) | |
6427 | { | |
6428 | result = tail = Fcons (wn, Qnil); | |
6429 | } | |
6430 | else | |
6431 | { | |
6432 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6433 | tail = XCDR (tail); | |
6434 | } | |
6435 | ||
6436 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6437 | } | |
6438 | ||
6439 | return result; | |
6440 | } | |
6441 | ||
6442 | ||
6443 | ||
c16e1cc3 | 6444 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6445 | 0, 1, 0, |
c16e1cc3 | 6446 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6447 | |
6448 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6449 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6450 | is the frame's minibuffer window. |
6451 | ||
6452 | If the root window is not split, ROOT is the root window itself. | |
6453 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6454 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6455 | size and position of the subwindows in the split, and the rest of the |
6456 | elements are the subwindows in the split. Each of the subwindows may | |
6457 | again be a window or a list representing a window split, and so on. | |
6458 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6459 | ||
6460 | If FRAME is nil or omitted, return information on the currently | |
6461 | selected frame. */) | |
5842a27b | 6462 | (Lisp_Object frame) |
94e16dd5 | 6463 | { |
94e16dd5 KS |
6464 | FRAME_PTR f; |
6465 | ||
6466 | if (NILP (frame)) | |
6467 | frame = selected_frame; | |
6468 | ||
6469 | CHECK_FRAME (frame); | |
6470 | f = XFRAME (frame); | |
6471 | ||
6472 | if (!FRAME_LIVE_P (f)) | |
6473 | return Qnil; | |
6474 | ||
c16e1cc3 | 6475 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6476 | } |
6477 | ||
5500c422 GM |
6478 | \f |
6479 | /*********************************************************************** | |
6480 | Marginal Areas | |
6481 | ***********************************************************************/ | |
6482 | ||
6483 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6484 | 2, 3, 0, |
fdb82f93 | 6485 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6486 | If WINDOW is nil, set margins of the currently selected window. |
6487 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6488 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6489 | does the same for the right marginal area. A nil width parameter | |
6490 | means no margin. */) | |
5842a27b | 6491 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
6492 | { |
6493 | struct window *w = decode_window (window); | |
5500c422 | 6494 | |
6b61353c KH |
6495 | /* Translate negative or zero widths to nil. |
6496 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6497 | |
c10ce82e | 6498 | if (!NILP (left_width)) |
6b61353c | 6499 | { |
c10ce82e JB |
6500 | CHECK_NUMBER (left_width); |
6501 | if (XINT (left_width) <= 0) | |
6502 | left_width = Qnil; | |
6b61353c | 6503 | } |
5500c422 | 6504 | |
c10ce82e | 6505 | if (!NILP (right_width)) |
6b61353c | 6506 | { |
c10ce82e JB |
6507 | CHECK_NUMBER (right_width); |
6508 | if (XINT (right_width) <= 0) | |
6509 | right_width = Qnil; | |
6b61353c | 6510 | } |
5500c422 | 6511 | |
c10ce82e JB |
6512 | if (!EQ (w->left_margin_cols, left_width) |
6513 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6514 | { |
c10ce82e JB |
6515 | w->left_margin_cols = left_width; |
6516 | w->right_margin_cols = right_width; | |
949cf20f KS |
6517 | |
6518 | adjust_window_margins (w); | |
6519 | ||
6520 | ++windows_or_buffers_changed; | |
6521 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6522 | } | |
5500c422 | 6523 | |
5500c422 GM |
6524 | return Qnil; |
6525 | } | |
6526 | ||
6527 | ||
6528 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6529 | 0, 1, 0, | |
fdb82f93 PJ |
6530 | doc: /* Get width of marginal areas of window WINDOW. |
6531 | If WINDOW is omitted or nil, use the currently selected window. | |
6532 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6533 | If a marginal area does not exist, its width will be returned | |
6534 | as nil. */) | |
5842a27b | 6535 | (Lisp_Object window) |
5500c422 GM |
6536 | { |
6537 | struct window *w = decode_window (window); | |
949cf20f KS |
6538 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6539 | } | |
6540 | ||
6541 | ||
6542 | \f | |
6543 | /*********************************************************************** | |
6544 | Fringes | |
6545 | ***********************************************************************/ | |
6546 | ||
a7ca3326 | 6547 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6548 | 2, 4, 0, |
6b61353c KH |
6549 | doc: /* Set the fringe widths of window WINDOW. |
6550 | If WINDOW is nil, set the fringe widths of the currently selected | |
6551 | window. | |
6552 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6553 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6554 | fringe width. If a fringe width arg is nil, that means to use the | |
6555 | frame's default fringe width. Default fringe widths can be set with | |
6556 | the command `set-fringe-style'. | |
6557 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6558 | outside of the display margins. By default, fringes are drawn between | |
6559 | display marginal areas and the text area. */) | |
5842a27b | 6560 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6561 | { |
6562 | struct window *w = decode_window (window); | |
6563 | ||
c10ce82e JB |
6564 | if (!NILP (left_width)) |
6565 | CHECK_NATNUM (left_width); | |
6566 | if (!NILP (right_width)) | |
6567 | CHECK_NATNUM (right_width); | |
5a857365 | 6568 | |
017e297e | 6569 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6570 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6571 | && (!EQ (w->left_fringe_width, left_width) | |
6572 | || !EQ (w->right_fringe_width, right_width) | |
6573 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6574 | { |
c10ce82e JB |
6575 | w->left_fringe_width = left_width; |
6576 | w->right_fringe_width = right_width; | |
949cf20f KS |
6577 | w->fringes_outside_margins = outside_margins; |
6578 | ||
6579 | adjust_window_margins (w); | |
6580 | ||
6581 | clear_glyph_matrix (w->current_matrix); | |
6582 | w->window_end_valid = Qnil; | |
6583 | ||
6584 | ++windows_or_buffers_changed; | |
6585 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6586 | } | |
6587 | ||
6588 | return Qnil; | |
6589 | } | |
6590 | ||
6591 | ||
6592 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6593 | 0, 1, 0, | |
6594 | doc: /* Get width of fringes of window WINDOW. | |
6595 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6596 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6597 | (Lisp_Object window) |
949cf20f KS |
6598 | { |
6599 | struct window *w = decode_window (window); | |
d46c6df5 | 6600 | |
949cf20f KS |
6601 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6602 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6603 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6604 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6605 | } |
6606 | ||
6607 | ||
6608 | \f | |
6609 | /*********************************************************************** | |
6610 | Scroll bars | |
6611 | ***********************************************************************/ | |
6612 | ||
a7ca3326 | 6613 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6614 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f KS |
6615 | doc: /* Set width and type of scroll bars of window WINDOW. |
6616 | If window is nil, set scroll bars of the currently selected window. | |
6617 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6618 | this is automatically adjusted to a multiple of the frame column width. | |
6619 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6620 | bar: left, right, or nil. | |
6b61353c | 6621 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6622 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6623 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6624 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6625 | { |
6626 | struct window *w = decode_window (window); | |
6627 | ||
6628 | if (!NILP (width)) | |
0f8fe9a2 SM |
6629 | { |
6630 | CHECK_NATNUM (width); | |
949cf20f | 6631 | |
0f8fe9a2 SM |
6632 | if (XINT (width) == 0) |
6633 | vertical_type = Qnil; | |
6634 | } | |
949cf20f | 6635 | |
413a79ad | 6636 | if (!(NILP (vertical_type) |
0cc1039f | 6637 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6638 | || EQ (vertical_type, Qright) |
6639 | || EQ (vertical_type, Qt))) | |
6640 | error ("Invalid type of vertical scroll bar"); | |
6641 | ||
949cf20f KS |
6642 | if (!EQ (w->scroll_bar_width, width) |
6643 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6644 | { | |
6645 | w->scroll_bar_width = width; | |
6646 | w->vertical_scroll_bar_type = vertical_type; | |
6647 | ||
6648 | adjust_window_margins (w); | |
6649 | ||
6650 | clear_glyph_matrix (w->current_matrix); | |
6651 | w->window_end_valid = Qnil; | |
6652 | ||
6653 | ++windows_or_buffers_changed; | |
6654 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6655 | } | |
6656 | ||
6657 | return Qnil; | |
6658 | } | |
6659 | ||
6660 | ||
6661 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6662 | 0, 1, 0, | |
6663 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6664 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6665 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6666 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6667 | value. */) | |
5842a27b | 6668 | (Lisp_Object window) |
949cf20f KS |
6669 | { |
6670 | struct window *w = decode_window (window); | |
6671 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6672 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6673 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6674 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6675 | Fcons (w->vertical_scroll_bar_type, | |
6676 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6677 | } |
6678 | ||
6679 | ||
7ab12479 | 6680 | \f |
5500c422 GM |
6681 | /*********************************************************************** |
6682 | Smooth scrolling | |
6683 | ***********************************************************************/ | |
6684 | ||
0cc1039f | 6685 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6686 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6687 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6688 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6689 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6690 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6691 | { |
47004952 | 6692 | Lisp_Object result; |
5500c422 GM |
6693 | struct frame *f; |
6694 | struct window *w; | |
177c0ea7 | 6695 | |
5500c422 GM |
6696 | if (NILP (window)) |
6697 | window = selected_window; | |
47004952 | 6698 | else |
b7826503 | 6699 | CHECK_WINDOW (window); |
5500c422 GM |
6700 | w = XWINDOW (window); |
6701 | f = XFRAME (w->frame); | |
177c0ea7 | 6702 | |
5500c422 | 6703 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6704 | result = (NILP (pixels_p) |
6705 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6706 | : make_number (-w->vscroll)); | |
5500c422 | 6707 | else |
47004952 GM |
6708 | result = make_number (0); |
6709 | return result; | |
5500c422 GM |
6710 | } |
6711 | ||
6712 | ||
6713 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6714 | 2, 3, 0, |
fdb82f93 | 6715 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6716 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6717 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6718 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6719 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6720 | corresponds to an integral number of pixels. The return value is the | |
6721 | result of this rounding. | |
6722 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6723 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6724 | { |
6725 | struct window *w; | |
6726 | struct frame *f; | |
177c0ea7 | 6727 | |
5500c422 GM |
6728 | if (NILP (window)) |
6729 | window = selected_window; | |
47004952 | 6730 | else |
b7826503 PJ |
6731 | CHECK_WINDOW (window); |
6732 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6733 | |
5500c422 GM |
6734 | w = XWINDOW (window); |
6735 | f = XFRAME (w->frame); | |
6736 | ||
6737 | if (FRAME_WINDOW_P (f)) | |
6738 | { | |
6739 | int old_dy = w->vscroll; | |
177c0ea7 | 6740 | |
0cc1039f KS |
6741 | w->vscroll = - (NILP (pixels_p) |
6742 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6743 | : XFLOATINT (vscroll)); | |
47004952 | 6744 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6745 | |
e56263e5 KS |
6746 | if (w->vscroll != old_dy) |
6747 | { | |
6748 | /* Adjust glyph matrix of the frame if the virtual display | |
6749 | area becomes larger than before. */ | |
6750 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6751 | adjust_glyphs (f); | |
177c0ea7 | 6752 | |
e56263e5 KS |
6753 | /* Prevent redisplay shortcuts. */ |
6754 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6755 | } | |
5500c422 | 6756 | } |
177c0ea7 | 6757 | |
0cc1039f | 6758 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6759 | } |
177c0ea7 | 6760 | |
7bbb5782 GM |
6761 | \f |
6762 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6763 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6764 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6765 | |
2f7c71a1 AS |
6766 | static void |
6767 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6768 | void *user_data) | |
7bbb5782 | 6769 | { |
56f2de10 | 6770 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6771 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6772 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6773 | } |
6774 | ||
6775 | ||
6776 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6777 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6778 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6779 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6780 | |
67492200 | 6781 | static int |
971de7fb | 6782 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6783 | { |
67492200 | 6784 | int cont; |
177c0ea7 | 6785 | |
67492200 | 6786 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6787 | { |
6788 | if (!NILP (w->hchild)) | |
f95464e4 | 6789 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6790 | else if (!NILP (w->vchild)) |
f95464e4 | 6791 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6792 | else |
0f532a9a | 6793 | cont = fn (w, user_data); |
177c0ea7 | 6794 | |
7bbb5782 GM |
6795 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6796 | } | |
67492200 GM |
6797 | |
6798 | return cont; | |
7bbb5782 GM |
6799 | } |
6800 | ||
6801 | ||
6d194a45 | 6802 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6803 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6804 | the window start. */ |
6805 | ||
67492200 | 6806 | static int |
971de7fb | 6807 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6808 | { |
08c1d235 SM |
6809 | if (MINI_WINDOW_P (w) |
6810 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6811 | && (w == XWINDOW (selected_window) | |
6812 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6813 | && ! NILP (Vminibuf_scroll_window) | |
6814 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6815 | freeze_p = NULL; |
177c0ea7 | 6816 | |
f95464e4 | 6817 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6818 | return 1; |
7bbb5782 GM |
6819 | } |
6820 | ||
6821 | ||
6822 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6823 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6824 | means freeze the window start. */ | |
6825 | ||
6826 | void | |
971de7fb | 6827 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6828 | { |
cbccabec | 6829 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6830 | } |
5500c422 GM |
6831 | |
6832 | \f | |
6833 | /*********************************************************************** | |
6834 | Initialization | |
6835 | ***********************************************************************/ | |
6836 | ||
cbff28e8 | 6837 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 6838 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
6839 | |
6840 | int | |
971de7fb | 6841 | compare_window_configurations (Lisp_Object c1, Lisp_Object c2, int ignore_positions) |
cbff28e8 RS |
6842 | { |
6843 | register struct save_window_data *d1, *d2; | |
6844 | struct Lisp_Vector *sw1, *sw2; | |
6845 | int i; | |
6846 | ||
663fbbba KS |
6847 | CHECK_WINDOW_CONFIGURATION (c1); |
6848 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 6849 | |
cbff28e8 RS |
6850 | d1 = (struct save_window_data *) XVECTOR (c1); |
6851 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6852 | sw1 = XVECTOR (d1->saved_windows); | |
6853 | sw2 = XVECTOR (d2->saved_windows); | |
6854 | ||
b05b4e27 | 6855 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 6856 | return 0; |
b05b4e27 | 6857 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 6858 | return 0; |
b05b4e27 | 6859 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
6860 | return 0; |
6861 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6862 | return 0; | |
6863 | /* Don't compare the current_window field directly. | |
6864 | Instead see w1_is_current and w2_is_current, below. */ | |
6865 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6866 | return 0; | |
2f8274be | 6867 | if (! ignore_positions) |
3f49fddc KS |
6868 | { |
6869 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6870 | return 0; | |
6871 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6872 | return 0; | |
6873 | } | |
cbff28e8 RS |
6874 | /* Don't compare the root_window field. |
6875 | We don't require the two configurations | |
6876 | to use the same window object, | |
6877 | and the two root windows must be equivalent | |
6878 | if everything else compares equal. */ | |
6879 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6880 | return 0; | |
cbff28e8 RS |
6881 | |
6882 | /* Verify that the two confis have the same number of windows. */ | |
eab3844f | 6883 | if (sw1->header.size != sw2->header.size) |
cbff28e8 RS |
6884 | return 0; |
6885 | ||
eab3844f | 6886 | for (i = 0; i < sw1->header.size; i++) |
cbff28e8 RS |
6887 | { |
6888 | struct saved_window *p1, *p2; | |
6889 | int w1_is_current, w2_is_current; | |
6890 | ||
6891 | p1 = SAVED_WINDOW_N (sw1, i); | |
6892 | p2 = SAVED_WINDOW_N (sw2, i); | |
6893 | ||
6894 | /* Verify that the current windows in the two | |
6895 | configurations correspond to each other. */ | |
6896 | w1_is_current = EQ (d1->current_window, p1->window); | |
6897 | w2_is_current = EQ (d2->current_window, p2->window); | |
6898 | ||
6899 | if (w1_is_current != w2_is_current) | |
6900 | return 0; | |
6901 | ||
6902 | /* Verify that the corresponding windows do match. */ | |
6903 | if (! EQ (p1->buffer, p2->buffer)) | |
6904 | return 0; | |
949cf20f | 6905 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6906 | return 0; |
949cf20f | 6907 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6908 | return 0; |
949cf20f | 6909 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6910 | return 0; |
949cf20f | 6911 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6912 | return 0; |
cbff28e8 RS |
6913 | if (! EQ (p1->display_table, p2->display_table)) |
6914 | return 0; | |
6915 | if (! EQ (p1->parent, p2->parent)) | |
6916 | return 0; | |
6917 | if (! EQ (p1->prev, p2->prev)) | |
6918 | return 0; | |
2f8274be RS |
6919 | if (! ignore_positions) |
6920 | { | |
6921 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6922 | return 0; | |
ea68264b GM |
6923 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6924 | return 0; | |
2f8274be RS |
6925 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6926 | return 0; | |
6927 | if (NILP (Fequal (p1->start, p2->start))) | |
6928 | return 0; | |
6929 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
6930 | return 0; | |
6931 | if (NILP (Fequal (p1->mark, p2->mark))) | |
6932 | return 0; | |
6933 | } | |
949cf20f KS |
6934 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
6935 | return 0; | |
6936 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
6937 | return 0; | |
6938 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
6939 | return 0; | |
6940 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
6941 | return 0; | |
6942 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
6943 | return 0; | |
6944 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
6945 | return 0; | |
6946 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
6947 | return 0; | |
cbff28e8 RS |
6948 | } |
6949 | ||
6950 | return 1; | |
6951 | } | |
2f8274be RS |
6952 | |
6953 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6954 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6955 | doc: /* Compare two window configurations as regards the structure of windows. |
6956 | This function ignores details such as the values of point and mark | |
6957 | and scrolling positions. */) | |
5842a27b | 6958 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6959 | { |
6960 | if (compare_window_configurations (x, y, 1)) | |
6961 | return Qt; | |
6962 | return Qnil; | |
6963 | } | |
cbff28e8 | 6964 | \f |
dfcf069d | 6965 | void |
971de7fb | 6966 | init_window_once (void) |
7ab12479 | 6967 | { |
3224dac1 | 6968 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6969 | XSETFRAME (selected_frame, f); |
6970 | Vterminal_frame = selected_frame; | |
6971 | minibuf_window = f->minibuffer_window; | |
6972 | selected_window = f->selected_window; | |
6973 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6974 | |
6975 | window_initialized = 1; | |
7ab12479 JB |
6976 | } |
6977 | ||
67492200 | 6978 | void |
971de7fb | 6979 | init_window (void) |
67492200 GM |
6980 | { |
6981 | Vwindow_list = Qnil; | |
6982 | } | |
6983 | ||
dfcf069d | 6984 | void |
971de7fb | 6985 | syms_of_window (void) |
7ab12479 | 6986 | { |
d67b4f80 | 6987 | Qscroll_up = intern_c_string ("scroll-up"); |
c525d842 CY |
6988 | staticpro (&Qscroll_up); |
6989 | ||
d67b4f80 | 6990 | Qscroll_down = intern_c_string ("scroll-down"); |
c525d842 CY |
6991 | staticpro (&Qscroll_down); |
6992 | ||
a4b000fb JL |
6993 | Qscroll_command = intern_c_string ("scroll-command"); |
6994 | staticpro (&Qscroll_command); | |
6995 | ||
6996 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6997 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6998 | ||
d67b4f80 | 6999 | Qwindow_size_fixed = intern_c_string ("window-size-fixed"); |
8a37516b | 7000 | staticpro (&Qwindow_size_fixed); |
c0e7ccd3 | 7001 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7002 | |
543f5fb1 RS |
7003 | staticpro (&Qwindow_configuration_change_hook); |
7004 | Qwindow_configuration_change_hook | |
d67b4f80 | 7005 | = intern_c_string ("window-configuration-change-hook"); |
543f5fb1 | 7006 | |
d67b4f80 | 7007 | Qwindowp = intern_c_string ("windowp"); |
7ab12479 JB |
7008 | staticpro (&Qwindowp); |
7009 | ||
d67b4f80 | 7010 | Qwindow_configuration_p = intern_c_string ("window-configuration-p"); |
3f8ab7bd RS |
7011 | staticpro (&Qwindow_configuration_p); |
7012 | ||
d67b4f80 | 7013 | Qwindow_live_p = intern_c_string ("window-live-p"); |
806b4d9b | 7014 | staticpro (&Qwindow_live_p); |
605be8af | 7015 | |
d67b4f80 | 7016 | Qdisplay_buffer = intern_c_string ("display-buffer"); |
87478b52 SM |
7017 | staticpro (&Qdisplay_buffer); |
7018 | ||
d67b4f80 | 7019 | Qtemp_buffer_show_hook = intern_c_string ("temp-buffer-show-hook"); |
a58ec57d RS |
7020 | staticpro (&Qtemp_buffer_show_hook); |
7021 | ||
67492200 | 7022 | staticpro (&Vwindow_list); |
8bfb170b KS |
7023 | |
7024 | minibuf_selected_window = Qnil; | |
3dbab091 | 7025 | staticpro (&minibuf_selected_window); |
67492200 | 7026 | |
c876b227 | 7027 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7028 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7029 | window_scroll_preserve_hpos = -1; |
7030 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7031 | |
29208e82 | 7032 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
7033 | doc: /* Non-nil means call as function to display a help buffer. |
7034 | The function is called with one argument, the buffer to be displayed. | |
7035 | Used by `with-output-to-temp-buffer'. | |
7036 | If this function is used, then it must do the entire job of showing | |
7037 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7038 | Vtemp_buffer_show_function = Qnil; |
7039 | ||
29208e82 | 7040 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 7041 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7042 | Vminibuf_scroll_window = Qnil; |
7043 | ||
29208e82 | 7044 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 7045 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7046 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7047 | is displayed in the `mode-line' face. */); | |
7048 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7049 | |
29208e82 | 7050 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 7051 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7052 | Vother_window_scroll_buffer = Qnil; |
7053 | ||
29208e82 | 7054 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e56263e5 KS |
7055 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
7056 | auto_window_vscroll_p = 1; | |
7057 | ||
29208e82 | 7058 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
fdb82f93 | 7059 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7060 | next_screen_context_lines = 2; |
7061 | ||
29208e82 | 7062 | DEFVAR_INT ("window-min-height", window_min_height, |
047aaeb9 MR |
7063 | doc: /* Allow deleting windows less than this tall. |
7064 | The value is measured in line units. If a window wants a modeline it | |
7065 | is counted as one line. | |
7066 | ||
7067 | Emacs honors settings of this variable when enlarging or shrinking | |
7068 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7069 | window_min_height = 4; |
7070 | ||
29208e82 | 7071 | DEFVAR_INT ("window-min-width", window_min_width, |
047aaeb9 MR |
7072 | doc: /* Allow deleting windows less than this wide. |
7073 | The value is measured in characters and includes any fringes or | |
7074 | the scrollbar. | |
7075 | ||
7076 | Emacs honors settings of this variable when enlarging or shrinking | |
7077 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7078 | window_min_width = 10; |
7079 | ||
5500c422 | 7080 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 7081 | Vscroll_preserve_screen_position, |
c876b227 | 7082 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7083 | A value of nil means point does not keep its screen position except |
7084 | at the scroll margin or window boundary respectively. | |
7085 | A value of t means point keeps its screen position if the scroll | |
7086 | command moved it vertically out of the window, e.g. when scrolling | |
7087 | by full screens. | |
9013a7f8 | 7088 | Any other value means point always keeps its screen position. |
a4b000fb JL |
7089 | Scroll commands should have the `scroll-command' property |
7090 | on their symbols to be controlled by this variable. */); | |
5500c422 | 7091 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7092 | |
29208e82 | 7093 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
7094 | doc: /* Type of marker to use for `window-point'. */); |
7095 | Vwindow_point_insertion_type = Qnil; | |
7096 | ||
543f5fb1 | 7097 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 7098 | Vwindow_configuration_change_hook, |
fdb82f93 | 7099 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7100 | The buffer-local part is run once per window, with the relevant window |
7101 | selected; while the global part is run only once for the modified frame, | |
7102 | with the relevant frame selected. */); | |
543f5fb1 RS |
7103 | Vwindow_configuration_change_hook = Qnil; |
7104 | ||
29208e82 | 7105 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
666e158e | 7106 | doc: /* If non-nil, then the `recenter' command with a nil argument |
6e6e5760 | 7107 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
7108 | frame to be redrawn only if it is a tty frame. */); |
7109 | Vrecenter_redisplay = Qtty; | |
7110 | ||
7111 | ||
7ab12479 JB |
7112 | defsubr (&Sselected_window); |
7113 | defsubr (&Sminibuffer_window); | |
7114 | defsubr (&Swindow_minibuffer_p); | |
7115 | defsubr (&Swindowp); | |
806b4d9b | 7116 | defsubr (&Swindow_live_p); |
7ab12479 | 7117 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7118 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7119 | defsubr (&Swindow_buffer); |
7120 | defsubr (&Swindow_height); | |
7121 | defsubr (&Swindow_width); | |
35ea56c9 | 7122 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7123 | defsubr (&Swindow_hscroll); |
7124 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7125 | defsubr (&Swindow_redisplay_end_trigger); |
7126 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7127 | defsubr (&Swindow_edges); |
c99a9eb3 | 7128 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 7129 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
7130 | defsubr (&Swindow_inside_edges); |
7131 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 7132 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
7133 | defsubr (&Scoordinates_in_window_p); |
7134 | defsubr (&Swindow_at); | |
7ab12479 JB |
7135 | defsubr (&Swindow_point); |
7136 | defsubr (&Swindow_start); | |
7137 | defsubr (&Swindow_end); | |
7138 | defsubr (&Sset_window_point); | |
7139 | defsubr (&Sset_window_start); | |
7140 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7141 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7142 | defsubr (&Swindow_display_table); |
7143 | defsubr (&Sset_window_display_table); | |
7144 | defsubr (&Snext_window); | |
7145 | defsubr (&Sprevious_window); | |
7146 | defsubr (&Sother_window); | |
7147 | defsubr (&Sget_lru_window); | |
f1aab3ff | 7148 | defsubr (&Swindow_use_time); |
7ab12479 JB |
7149 | defsubr (&Sget_largest_window); |
7150 | defsubr (&Sget_buffer_window); | |
7151 | defsubr (&Sdelete_other_windows); | |
7152 | defsubr (&Sdelete_windows_on); | |
7153 | defsubr (&Sreplace_buffer_in_windows); | |
7154 | defsubr (&Sdelete_window); | |
7155 | defsubr (&Sset_window_buffer); | |
7156 | defsubr (&Sselect_window); | |
6b61353c | 7157 | defsubr (&Sforce_window_update); |
3e21b6a7 | 7158 | defsubr (&Stemp_output_buffer_show); |
7ab12479 JB |
7159 | defsubr (&Ssplit_window); |
7160 | defsubr (&Senlarge_window); | |
7161 | defsubr (&Sshrink_window); | |
0d384044 | 7162 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7163 | defsubr (&Sscroll_up); |
7164 | defsubr (&Sscroll_down); | |
7165 | defsubr (&Sscroll_left); | |
7166 | defsubr (&Sscroll_right); | |
ccd0664b | 7167 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7168 | defsubr (&Sscroll_other_window); |
fa832261 | 7169 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7170 | defsubr (&Srecenter); |
81fe0836 | 7171 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7172 | defsubr (&Smove_to_window_line); |
7173 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7174 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7175 | defsubr (&Sset_window_configuration); |
7176 | defsubr (&Scurrent_window_configuration); | |
c16e1cc3 | 7177 | defsubr (&Swindow_tree); |
5500c422 GM |
7178 | defsubr (&Sset_window_margins); |
7179 | defsubr (&Swindow_margins); | |
949cf20f KS |
7180 | defsubr (&Sset_window_fringes); |
7181 | defsubr (&Swindow_fringes); | |
7182 | defsubr (&Sset_window_scroll_bars); | |
7183 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7184 | defsubr (&Swindow_vscroll); |
7185 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7186 | defsubr (&Scompare_window_configurations); |
67492200 | 7187 | defsubr (&Swindow_list); |
cfbb2395 JB |
7188 | defsubr (&Swindow_parameters); |
7189 | defsubr (&Swindow_parameter); | |
7190 | defsubr (&Sset_window_parameter); | |
7191 | ||
7ab12479 JB |
7192 | } |
7193 | ||
dfcf069d | 7194 | void |
971de7fb | 7195 | keys_of_window (void) |
7ab12479 JB |
7196 | { |
7197 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7198 | initial_define_key (control_x_map, '2', "split-window"); | |
7199 | initial_define_key (control_x_map, '0', "delete-window"); | |
7200 | initial_define_key (control_x_map, 'o', "other-window"); | |
7201 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7202 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7203 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7204 | ||
32129746 | 7205 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 7206 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 7207 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 7208 | } |