Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
203eb0aa | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
8cabe764 GM |
4 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
5 | Free Software Foundation, Inc. | |
7ab12479 JB |
6 | |
7 | This file is part of GNU Emacs. | |
8 | ||
9ec0b715 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 10 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
7ab12479 JB |
13 | |
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 21 | |
18160b98 | 22 | #include <config.h> |
4d553a13 KL |
23 | #include <stdio.h> |
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 | |
5500c422 | 53 | |
3f8ab7bd | 54 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
87478b52 | 55 | Lisp_Object Qdisplay_buffer; |
c525d842 | 56 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 57 | Lisp_Object Qwindow_size_fixed; |
87478b52 | 58 | |
49b996e7 | 59 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 60 | |
521b203e | 61 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 62 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
63 | static int count_windows P_ ((struct window *)); |
64 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
65 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
66 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
67 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
047aaeb9 MR |
68 | static int window_min_size_1 P_ ((struct window *, int, int)); |
69 | static int window_min_size_2 P_ ((struct window *, int, int)); | |
70 | static int window_min_size P_ ((struct window *, int, int, int, int *)); | |
5fe0b054 | 71 | static void size_window P_ ((Lisp_Object, int, int, int, int, int)); |
f95464e4 | 72 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 73 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 74 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 75 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 76 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
77 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
78 | Lisp_Object)); | |
67492200 GM |
79 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
80 | Lisp_Object, int)); | |
81 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
82 | Lisp_Object *)); | |
f95464e4 GM |
83 | static int foreach_window_1 P_ ((struct window *, |
84 | int (* fn) (struct window *, void *), | |
85 | void *)); | |
cd2904bd | 86 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 87 | |
7ab12479 JB |
88 | /* This is the window in which the terminal's cursor should |
89 | be left when nothing is being done with it. This must | |
90 | always be a leaf window, and its buffer is selected by | |
91 | the top level editing loop at the end of each command. | |
92 | ||
93 | This value is always the same as | |
44fa5b1e | 94 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
95 | |
96 | Lisp_Object selected_window; | |
97 | ||
67492200 GM |
98 | /* A list of all windows for use by next_window and Fwindow_list. |
99 | Functions creating or deleting windows should invalidate this cache | |
100 | by setting it to nil. */ | |
101 | ||
102 | Lisp_Object Vwindow_list; | |
103 | ||
5500c422 GM |
104 | /* The mini-buffer window of the selected frame. |
105 | Note that you cannot test for mini-bufferness of an arbitrary window | |
106 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 107 | the selected window. */ |
5500c422 | 108 | |
7ab12479 JB |
109 | Lisp_Object minibuf_window; |
110 | ||
3f49fddc KS |
111 | /* Non-nil means it is the window whose mode line should be |
112 | shown as the selected window when the minibuffer is selected. */ | |
113 | ||
3dbab091 | 114 | Lisp_Object minibuf_selected_window; |
3f49fddc | 115 | |
7ab12479 | 116 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
117 | when the mini-buffer is selected. */ |
118 | ||
7ab12479 JB |
119 | Lisp_Object Vminibuf_scroll_window; |
120 | ||
121 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 122 | |
7ab12479 JB |
123 | Lisp_Object Vother_window_scroll_buffer; |
124 | ||
7ab12479 | 125 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 126 | |
7ab12479 JB |
127 | Lisp_Object Vtemp_buffer_show_function; |
128 | ||
e56263e5 KS |
129 | /* Non-zero means line and page scrolling on tall lines (with images) |
130 | does partial scrolling by modifying window-vscroll. */ | |
131 | ||
132 | int auto_window_vscroll_p; | |
133 | ||
cc91894c KS |
134 | /* Non-zero means to use mode-line-inactive face in all windows but the |
135 | selected-window and the minibuffer-scroll-window when the | |
136 | minibuffer is active. */ | |
137 | int mode_line_in_non_selected_windows; | |
26124d5e | 138 | |
7ab12479 | 139 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 140 | |
31ade731 SM |
141 | EMACS_INT window_min_height; |
142 | EMACS_INT window_min_width; | |
7ab12479 | 143 | |
a58ec57d | 144 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 145 | |
a58ec57d RS |
146 | Lisp_Object Qtemp_buffer_show_hook; |
147 | ||
7ab12479 | 148 | /* Number of lines of continuity in scrolling by screenfuls. */ |
5500c422 | 149 | |
31ade731 | 150 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
151 | |
152 | /* Incremented for each window created. */ | |
5500c422 | 153 | |
7ab12479 JB |
154 | static int sequence_number; |
155 | ||
5b03d3c0 | 156 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 157 | |
5b03d3c0 RS |
158 | static int window_initialized; |
159 | ||
543f5fb1 | 160 | /* Hook to run when window config changes. */ |
5500c422 | 161 | |
eeca6f6f SM |
162 | static Lisp_Object Qwindow_configuration_change_hook; |
163 | static Lisp_Object Vwindow_configuration_change_hook; | |
543f5fb1 | 164 | |
d0c38d63 | 165 | /* Non-nil means scroll commands try to put point |
9317a85d | 166 | at the same screen height as previously. */ |
9317a85d | 167 | |
5500c422 GM |
168 | Lisp_Object Vscroll_preserve_screen_position; |
169 | ||
a1562258 SM |
170 | /* Non-nil means that text is inserted before window's markers. */ |
171 | ||
172 | Lisp_Object Vwindow_point_insertion_type; | |
173 | ||
0d384044 RS |
174 | /* Incremented by 1 whenever a window is deleted. */ |
175 | ||
176 | int window_deletion_count; | |
177 | ||
66d43aea LT |
178 | /* Used by the function window_scroll_pixel_based */ |
179 | ||
c876b227 | 180 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 181 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 182 | |
c876b227 SM |
183 | /* Same for window_scroll_line_based. */ |
184 | ||
185 | static int window_scroll_preserve_hpos; | |
186 | static int window_scroll_preserve_vpos; | |
187 | ||
5500c422 | 188 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 189 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 190 | static int inhibit_frame_unsplittable; |
5500c422 | 191 | #endif /* 0 */ |
7d601aaa | 192 | |
31ade731 | 193 | extern EMACS_INT scroll_margin; |
9317a85d | 194 | |
dba06815 | 195 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
196 | \f |
197 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
198 | doc: /* Returns t if OBJECT is a window. */) |
199 | (object) | |
413430c5 | 200 | Lisp_Object object; |
7ab12479 | 201 | { |
413430c5 | 202 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
203 | } |
204 | ||
806b4d9b | 205 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 206 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
207 | (object) |
208 | Lisp_Object object; | |
605be8af | 209 | { |
9e571f49 | 210 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
211 | } |
212 | ||
7ab12479 JB |
213 | Lisp_Object |
214 | make_window () | |
215 | { | |
cffec418 | 216 | Lisp_Object val; |
7ab12479 | 217 | register struct window *p; |
cffec418 | 218 | |
26605be9 | 219 | p = allocate_window (); |
2a1893f4 SM |
220 | ++sequence_number; |
221 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
222 | XSETFASTINT (p->left_col, 0); |
223 | XSETFASTINT (p->top_line, 0); | |
224 | XSETFASTINT (p->total_lines, 0); | |
225 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 226 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 227 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 228 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
229 | p->start = Fmake_marker (); |
230 | p->pointm = Fmake_marker (); | |
d834a2e9 | 231 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 232 | p->frame = Qnil; |
7ab12479 JB |
233 | p->display_table = Qnil; |
234 | p->dedicated = Qnil; | |
cfbb2395 | 235 | p->window_parameters = Qnil; |
5500c422 GM |
236 | p->pseudo_window_p = 0; |
237 | bzero (&p->cursor, sizeof (p->cursor)); | |
238 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
239 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
240 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 241 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 242 | p->phys_cursor_type = -1; |
4b26579e | 243 | p->phys_cursor_width = -1; |
5500c422 GM |
244 | p->must_be_updated_p = 0; |
245 | XSETFASTINT (p->window_end_vpos, 0); | |
246 | XSETFASTINT (p->window_end_pos, 0); | |
247 | p->window_end_valid = Qnil; | |
248 | p->vscroll = 0; | |
cffec418 | 249 | XSETWINDOW (val, p); |
5500c422 | 250 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 251 | p->frozen_window_start_p = 0; |
6b448755 | 252 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
253 | p->left_margin_cols = Qnil; |
254 | p->right_margin_cols = Qnil; | |
255 | p->left_fringe_width = Qnil; | |
256 | p->right_fringe_width = Qnil; | |
257 | p->fringes_outside_margins = Qnil; | |
258 | p->scroll_bar_width = Qnil; | |
259 | p->vertical_scroll_bar_type = Qt; | |
047aaeb9 | 260 | p->resize_proportionally = Qnil; |
67492200 GM |
261 | |
262 | Vwindow_list = Qnil; | |
7ab12479 JB |
263 | return val; |
264 | } | |
265 | ||
266 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
267 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
268 | () | |
7ab12479 JB |
269 | { |
270 | return selected_window; | |
271 | } | |
272 | ||
83762ba4 | 273 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
274 | doc: /* Return the window used now for minibuffers. |
275 | If the optional argument FRAME is specified, return the minibuffer window | |
276 | used by that frame. */) | |
277 | (frame) | |
83762ba4 | 278 | Lisp_Object frame; |
7ab12479 | 279 | { |
83762ba4 | 280 | if (NILP (frame)) |
1ae1a37d | 281 | frame = selected_frame; |
b7826503 | 282 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 283 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
284 | } |
285 | ||
605be8af | 286 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
6b61353c KH |
287 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
288 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 289 | (window) |
7ab12479 JB |
290 | Lisp_Object window; |
291 | { | |
292 | struct window *w = decode_window (window); | |
53bb6b99 | 293 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
294 | } |
295 | ||
296 | ||
7ab12479 | 297 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 298 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 299 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
300 | Return nil if that position is scrolled vertically out of view. |
301 | If a character is only partially visible, nil is returned, unless the | |
302 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 303 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 304 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
305 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
306 | ||
307 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
308 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
309 | where X and Y are the pixel coordinates relative to the top left corner | |
310 | of the window. The remaining elements are omitted if the character after | |
311 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 312 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 313 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 314 | (pos, window, partially) |
5cdb3cf3 | 315 | Lisp_Object pos, window, partially; |
7ab12479 JB |
316 | { |
317 | register struct window *w; | |
7ab12479 JB |
318 | register int posint; |
319 | register struct buffer *buf; | |
9a132b1f | 320 | struct text_pos top; |
0cc1039f | 321 | Lisp_Object in_window = Qnil; |
5a857365 | 322 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 323 | int x, y; |
7ab12479 | 324 | |
f28b75a9 MB |
325 | w = decode_window (window); |
326 | buf = XBUFFER (w->buffer); | |
327 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
328 | ||
120b7781 KS |
329 | if (EQ (pos, Qt)) |
330 | posint = -1; | |
331 | else if (!NILP (pos)) | |
7ab12479 | 332 | { |
b7826503 | 333 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
334 | posint = XINT (pos); |
335 | } | |
f28b75a9 MB |
336 | else if (w == XWINDOW (selected_window)) |
337 | posint = PT; | |
338 | else | |
339 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 340 | |
0cc1039f KS |
341 | /* If position is above window start or outside buffer boundaries, |
342 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
343 | if ((EQ (pos, Qt) |
344 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
345 | && CHARPOS (top) >= BUF_BEGV (buf) |
346 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 347 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 348 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
349 | in_window = Qt; |
350 | ||
351 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
352 | { |
353 | Lisp_Object part = Qnil; | |
354 | if (!fully_p) | |
355 | part = list4 (make_number (rtop), make_number (rbot), | |
356 | make_number (rowh), make_number (vpos)); | |
357 | in_window = Fcons (make_number (x), | |
358 | Fcons (make_number (y), part)); | |
359 | } | |
360 | ||
9a132b1f | 361 | return in_window; |
7ab12479 | 362 | } |
53bb6b99 | 363 | |
536833ab | 364 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 365 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
366 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
367 | If WINDOW is nil or omitted, use selected window. | |
368 | ||
7bbc67d2 KS |
369 | Return height of current line if LINE is omitted or nil. Return height of |
370 | header or mode line if LINE is `header-line' and `mode-line'. | |
371 | Otherwise, LINE is a text line number starting from 0. A negative number | |
372 | counts from the end of the window. | |
536833ab | 373 | |
7bbc67d2 | 374 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 375 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 376 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 377 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
378 | the bottom of the text line. If there are off-window pixels at the top |
379 | of the (first) text line, YPOS is negative. | |
536833ab KS |
380 | |
381 | Return nil if window display is not up-to-date. In that case, use | |
382 | `pos-visible-in-window-p' to obtain the information. */) | |
383 | (line, window) | |
384 | Lisp_Object line, window; | |
b3a10345 KS |
385 | { |
386 | register struct window *w; | |
387 | register struct buffer *b; | |
388 | struct glyph_row *row, *end_row; | |
536833ab | 389 | int max_y, crop, i, n; |
b3a10345 KS |
390 | |
391 | w = decode_window (window); | |
392 | ||
393 | if (noninteractive | |
b3a10345 | 394 | || w->pseudo_window_p) |
7bbc67d2 | 395 | return Qnil; |
b3a10345 KS |
396 | |
397 | CHECK_BUFFER (w->buffer); | |
398 | b = XBUFFER (w->buffer); | |
399 | ||
400 | /* Fail if current matrix is not up-to-date. */ | |
401 | if (NILP (w->window_end_valid) | |
402 | || current_buffer->clip_changed | |
403 | || current_buffer->prevent_redisplay_optimizations_p | |
404 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
405 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
406 | return Qnil; | |
407 | ||
7bbc67d2 KS |
408 | if (NILP (line)) |
409 | { | |
410 | i = w->cursor.vpos; | |
411 | if (i < 0 || i >= w->current_matrix->nrows | |
412 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
413 | return Qnil; | |
414 | max_y = window_text_bottom_y (w); | |
415 | goto found_row; | |
416 | } | |
417 | ||
536833ab | 418 | if (EQ (line, Qheader_line)) |
b3a10345 | 419 | { |
536833ab KS |
420 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
421 | return Qnil; | |
422 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
423 | if (!row->enabled_p) |
424 | return Qnil; | |
536833ab KS |
425 | return list4 (make_number (row->height), |
426 | make_number (0), make_number (0), | |
427 | make_number (0)); | |
b3a10345 | 428 | } |
536833ab KS |
429 | |
430 | if (EQ (line, Qmode_line)) | |
b3a10345 | 431 | { |
536833ab KS |
432 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
433 | if (!row->enabled_p) | |
434 | return Qnil; | |
435 | return list4 (make_number (row->height), | |
436 | make_number (0), /* not accurate */ | |
437 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
438 | + window_text_bottom_y (w)), | |
439 | make_number (0)); | |
440 | } | |
b3a10345 | 441 | |
536833ab | 442 | CHECK_NUMBER (line); |
7bbc67d2 | 443 | n = XINT (line); |
536833ab KS |
444 | |
445 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
446 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
447 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 448 | i = 0; |
536833ab KS |
449 | |
450 | while ((n < 0 || i < n) | |
451 | && row <= end_row && row->enabled_p | |
452 | && row->y + row->height < max_y) | |
453 | row++, i++; | |
b3a10345 | 454 | |
536833ab KS |
455 | if (row > end_row || !row->enabled_p) |
456 | return Qnil; | |
457 | ||
7bbc67d2 | 458 | if (++n < 0) |
536833ab KS |
459 | { |
460 | if (-n > i) | |
461 | return Qnil; | |
7bbc67d2 KS |
462 | row += n; |
463 | i += n; | |
b3a10345 KS |
464 | } |
465 | ||
7bbc67d2 | 466 | found_row: |
536833ab KS |
467 | crop = max (0, (row->y + row->height) - max_y); |
468 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 469 | make_number (i), |
536833ab KS |
470 | make_number (row->y), |
471 | make_number (crop)); | |
b3a10345 KS |
472 | } |
473 | ||
536833ab | 474 | |
7ab12479 JB |
475 | \f |
476 | static struct window * | |
477 | decode_window (window) | |
478 | register Lisp_Object window; | |
479 | { | |
265a9e55 | 480 | if (NILP (window)) |
7ab12479 JB |
481 | return XWINDOW (selected_window); |
482 | ||
b7826503 | 483 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
484 | return XWINDOW (window); |
485 | } | |
486 | ||
6b61353c KH |
487 | static struct window * |
488 | decode_any_window (window) | |
489 | register Lisp_Object window; | |
490 | { | |
491 | if (NILP (window)) | |
492 | return XWINDOW (selected_window); | |
493 | ||
494 | CHECK_WINDOW (window); | |
495 | return XWINDOW (window); | |
496 | } | |
497 | ||
7ab12479 | 498 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
499 | doc: /* Return the buffer that WINDOW is displaying. |
500 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 501 | (window) |
7ab12479 JB |
502 | Lisp_Object window; |
503 | { | |
504 | return decode_window (window)->buffer; | |
505 | } | |
506 | ||
507 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
c85322d0 EZ |
508 | doc: /* Return the number of lines in WINDOW (including its mode line). |
509 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 510 | (window) |
7ab12479 JB |
511 | Lisp_Object window; |
512 | { | |
6b61353c | 513 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
514 | } |
515 | ||
516 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 | 517 | doc: /* Return the number of display columns in WINDOW. |
d653c8cc MR |
518 | WINDOW defaults to the selected window. |
519 | ||
520 | Note: The return value is the number of columns available for text in | |
521 | WINDOW. If you want to find out how many columns WINDOW takes up, use | |
522 | (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
fdb82f93 | 523 | (window) |
7ab12479 JB |
524 | Lisp_Object window; |
525 | { | |
6b61353c | 526 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
527 | } |
528 | ||
35ea56c9 MR |
529 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
530 | doc: /* Return t if WINDOW is as wide as its frame. | |
531 | WINDOW defaults to the selected window. */) | |
532 | (window) | |
533 | Lisp_Object window; | |
534 | { | |
535 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
536 | } | |
537 | ||
7ab12479 | 538 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
539 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
540 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 541 | (window) |
7ab12479 JB |
542 | Lisp_Object window; |
543 | { | |
544 | return decode_window (window)->hscroll; | |
545 | } | |
546 | ||
547 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 548 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 549 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
550 | |
551 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 552 | window so that the location of point moves off-window. */) |
fdb82f93 | 553 | (window, ncol) |
ea68264b | 554 | Lisp_Object window, ncol; |
7ab12479 | 555 | { |
ea68264b GM |
556 | struct window *w = decode_window (window); |
557 | int hscroll; | |
7ab12479 | 558 | |
b7826503 | 559 | CHECK_NUMBER (ncol); |
ea68264b | 560 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 561 | |
ea68264b GM |
562 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
563 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 564 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 565 | |
c67fa410 | 566 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
567 | return ncol; |
568 | } | |
569 | ||
190eb263 RS |
570 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
571 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 572 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 573 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
574 | See `set-window-redisplay-end-trigger' for more information. */) |
575 | (window) | |
190eb263 RS |
576 | Lisp_Object window; |
577 | { | |
578 | return decode_window (window)->redisplay_end_trigger; | |
579 | } | |
580 | ||
581 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
582 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
583 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
584 | VALUE should be a buffer position (typically a marker) or nil. | |
585 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
586 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
587 | with two arguments: WINDOW, and the end trigger value. | |
588 | Afterwards the end-trigger value is reset to nil. */) | |
589 | (window, value) | |
190eb263 RS |
590 | register Lisp_Object window, value; |
591 | { | |
592 | register struct window *w; | |
593 | ||
594 | w = decode_window (window); | |
595 | w->redisplay_end_trigger = value; | |
596 | return value; | |
597 | } | |
598 | ||
7ab12479 | 599 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
600 | doc: /* Return a list of the edge coordinates of WINDOW. |
601 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
602 | RIGHT is one more than the rightmost column occupied by WINDOW, |
603 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
604 | The edges include the space used by the window's scroll bar, | |
605 | display margins, fringes, header line, and mode line, if it has them. | |
606 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 607 | (window) |
7ab12479 JB |
608 | Lisp_Object window; |
609 | { | |
6b61353c | 610 | register struct window *w = decode_any_window (window); |
7ab12479 | 611 | |
949cf20f KS |
612 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
613 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
614 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
615 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
616 | Qnil)))); | |
7ab12479 JB |
617 | } |
618 | ||
c99a9eb3 RS |
619 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
620 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
621 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
622 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
623 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
624 | The pixel edges include the space used by the window's scroll bar, | |
625 | display margins, fringes, header line, and mode line, if it has them. | |
626 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
627 | (window) | |
628 | Lisp_Object window; | |
629 | { | |
6b61353c | 630 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
631 | |
632 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
633 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
634 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
635 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
636 | Qnil)))); | |
637 | } | |
638 | ||
639 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
640 | doc: /* Return a list of the edge coordinates of WINDOW. | |
641 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
642 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
643 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
644 | The inside edges do not include the space used by the window's scroll bar, | |
645 | display margins, fringes, header line, and/or mode line. */) | |
646 | (window) | |
647 | Lisp_Object window; | |
648 | { | |
6b61353c | 649 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
650 | |
651 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
652 | + WINDOW_LEFT_MARGIN_COLS (w) | |
653 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
654 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
655 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 656 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
657 | - WINDOW_RIGHT_MARGIN_COLS (w) |
658 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
659 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
660 | - WINDOW_MODE_LINE_LINES (w))); | |
661 | } | |
662 | ||
663 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 664 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
665 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
666 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
667 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
668 | The inside edges do not include the space used by the window's scroll bar, | |
669 | display margins, fringes, header line, and/or mode line. */) | |
670 | (window) | |
671 | Lisp_Object window; | |
672 | { | |
6b61353c | 673 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
674 | |
675 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
676 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
677 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
678 | make_number (WINDOW_TOP_EDGE_Y (w) | |
679 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 680 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
681 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
682 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
683 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
684 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
685 | } | |
686 | ||
fbad6f9a | 687 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 688 | If it is not, return ON_NOTHING; |
d5783c40 JB |
689 | if it is in the window's text area, |
690 | set *x and *y to its location relative to the upper left corner | |
691 | of the window, and | |
341f3858 KS |
692 | return ON_TEXT; |
693 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 694 | if it is on the border between the window and its right sibling, |
341f3858 | 695 | return ON_VERTICAL_BORDER. |
6487f669 RS |
696 | if it is on a scroll bar, |
697 | return ON_SCROLL_BAR. | |
341f3858 | 698 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 699 | if it is in left or right fringe of the window, |
341f3858 KS |
700 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
701 | to window-relative coordinates; | |
49b996e7 | 702 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
703 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
704 | to window-relative coordinates. | |
5500c422 GM |
705 | |
706 | X and Y are frame relative pixel coordinates. */ | |
707 | ||
7442878f | 708 | static enum window_part |
d5783c40 JB |
709 | coordinates_in_window (w, x, y) |
710 | register struct window *w; | |
711 | register int *x, *y; | |
712 | { | |
b0228ace GM |
713 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
714 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 715 | enum window_part part; |
949cf20f KS |
716 | int ux = FRAME_COLUMN_WIDTH (f); |
717 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
718 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
719 | /* The width of the area where the vertical line can be dragged. |
720 | (Between mode lines for instance. */ | |
721 | int grabbable_width = ux; | |
949cf20f | 722 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 723 | |
466539bc EZ |
724 | /* In what's below, we subtract 1 when computing right_x because we |
725 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
726 | if (w->pseudo_window_p) |
727 | { | |
728 | left_x = 0; | |
949cf20f KS |
729 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
730 | top_y = WINDOW_TOP_EDGE_Y (w); | |
731 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
732 | } |
733 | else | |
734 | { | |
949cf20f KS |
735 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
736 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
737 | top_y = WINDOW_TOP_EDGE_Y (w); | |
738 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 739 | } |
37962e60 | 740 | |
949cf20f KS |
741 | /* Outside any interesting row? */ |
742 | if (*y < top_y || *y >= bottom_y) | |
743 | return ON_NOTHING; | |
744 | ||
1cb794ba GM |
745 | /* On the mode line or header line? If it's near the start of |
746 | the mode or header line of window that's has a horizontal | |
747 | sibling, say it's on the vertical line. That's to be able | |
748 | to resize windows horizontally in case we're using toolkit | |
749 | scroll bars. */ | |
b0228ace | 750 | |
1cb794ba | 751 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 752 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 753 | { |
949cf20f KS |
754 | part = ON_MODE_LINE; |
755 | ||
756 | header_vertical_border_check: | |
b0228ace GM |
757 | /* We're somewhere on the mode line. We consider the place |
758 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 759 | as the vertical border. If scroll bars on the left, |
b0228ace | 760 | return the right window. */ |
949cf20f KS |
761 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
762 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 763 | { |
1ea40aa2 | 764 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 765 | { |
3f489dc7 KS |
766 | /* Convert X and Y to window relative coordinates. |
767 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
768 | *x = max (0, *x - x0); |
769 | *y -= top_y; | |
770 | return ON_VERTICAL_BORDER; | |
771 | } | |
b0228ace | 772 | } |
79fd290e | 773 | else |
b0228ace | 774 | { |
1ea40aa2 | 775 | if (eabs (*x - x1) < grabbable_width) |
f8c62b70 | 776 | { |
3f489dc7 KS |
777 | /* Convert X and Y to window relative coordinates. |
778 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
779 | *x = min (x1, *x) - x0; |
780 | *y -= top_y; | |
781 | return ON_VERTICAL_BORDER; | |
782 | } | |
b0228ace | 783 | } |
949cf20f | 784 | |
cb639b8f KS |
785 | if (*x < x0 || *x >= x1) |
786 | return ON_NOTHING; | |
787 | ||
a5303820 KS |
788 | /* Convert X and Y to window relative coordinates. |
789 | Mode line starts at left edge of window. */ | |
790 | *x -= x0; | |
791 | *y -= top_y; | |
949cf20f | 792 | return part; |
b0228ace | 793 | } |
949cf20f KS |
794 | |
795 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 796 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 797 | { |
949cf20f KS |
798 | part = ON_HEADER_LINE; |
799 | goto header_vertical_border_check; | |
1cb794ba | 800 | } |
949cf20f | 801 | |
cb639b8f KS |
802 | if (*x < x0 || *x >= x1) |
803 | return ON_NOTHING; | |
804 | ||
949cf20f KS |
805 | /* Outside any interesting column? */ |
806 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
807 | { |
808 | *y -= top_y; | |
809 | return ON_SCROLL_BAR; | |
810 | } | |
949cf20f KS |
811 | |
812 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
813 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 814 | |
949cf20f KS |
815 | text_left = window_box_left (w, TEXT_AREA); |
816 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
817 | ||
818 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 819 | { |
447e9da0 | 820 | if (!w->pseudo_window_p |
949cf20f | 821 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 822 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 823 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 824 | { |
3f489dc7 KS |
825 | /* Convert X and Y to window relative coordinates. |
826 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
827 | *x = min (right_x, *x) - left_x; |
828 | *y -= top_y; | |
829 | return ON_VERTICAL_BORDER; | |
830 | } | |
fbad6f9a | 831 | } |
447e9da0 GM |
832 | else |
833 | { | |
834 | /* Need to say "*x > right_x" rather than >=, since on character | |
835 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
836 | if (!w->pseudo_window_p |
837 | && !WINDOW_RIGHTMOST_P (w) | |
838 | && *x > right_x - ux) | |
b0228ace GM |
839 | { |
840 | /* On the border on the right side of the window? Assume that | |
841 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
842 | *x = min (right_x, *x) - left_x; |
843 | *y -= top_y; | |
949cf20f | 844 | return ON_VERTICAL_BORDER; |
b0228ace | 845 | } |
447e9da0 | 846 | } |
b0228ace | 847 | |
949cf20f KS |
848 | if (*x < text_left) |
849 | { | |
850 | if (lmargin_width > 0 | |
851 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
852 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
853 | : (*x < left_x + lmargin_width))) | |
a5303820 | 854 | { |
6b61353c | 855 | *x -= left_x; |
a5303820 KS |
856 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
857 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
858 | *y -= top_y; | |
859 | return ON_LEFT_MARGIN; | |
860 | } | |
949cf20f KS |
861 | |
862 | /* Convert X and Y to window-relative pixel coordinates. */ | |
863 | *x -= left_x; | |
864 | *y -= top_y; | |
865 | return ON_LEFT_FRINGE; | |
866 | } | |
867 | ||
868 | if (*x >= text_right) | |
869 | { | |
870 | if (rmargin_width > 0 | |
871 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
872 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
873 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 874 | { |
66d41723 KS |
875 | *x -= right_x - rmargin_width; |
876 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
877 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
878 | *y -= top_y; |
879 | return ON_RIGHT_MARGIN; | |
880 | } | |
949cf20f KS |
881 | |
882 | /* Convert X and Y to window-relative pixel coordinates. */ | |
883 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
884 | *y -= top_y; | |
885 | return ON_RIGHT_FRINGE; | |
886 | } | |
887 | ||
888 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 889 | *x -= text_left; |
949cf20f KS |
890 | *y -= top_y; |
891 | return ON_TEXT; | |
d5783c40 JB |
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. | |
900 | \(0 . 0) denotes the character in the upper left corner of the | |
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. */) | |
fdb82f93 | 912 | (coordinates, window) |
d5783c40 JB |
913 | register Lisp_Object coordinates, window; |
914 | { | |
5500c422 GM |
915 | struct window *w; |
916 | struct frame *f; | |
d5783c40 | 917 | int x, y; |
5500c422 | 918 | Lisp_Object lx, ly; |
d5783c40 | 919 | |
6b61353c | 920 | CHECK_WINDOW (window); |
5500c422 GM |
921 | w = XWINDOW (window); |
922 | f = XFRAME (w->frame); | |
b7826503 | 923 | CHECK_CONS (coordinates); |
5500c422 GM |
924 | lx = Fcar (coordinates); |
925 | ly = Fcdr (coordinates); | |
b7826503 PJ |
926 | CHECK_NUMBER_OR_FLOAT (lx); |
927 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
928 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
929 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
930 | |
931 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 932 | { |
7442878f | 933 | case ON_NOTHING: |
d5783c40 JB |
934 | return Qnil; |
935 | ||
7442878f GM |
936 | case ON_TEXT: |
937 | /* X and Y are now window relative pixel coordinates. Convert | |
938 | them to canonical char units before returning them. */ | |
949cf20f KS |
939 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
940 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 941 | |
7442878f | 942 | case ON_MODE_LINE: |
d5783c40 | 943 | return Qmode_line; |
37962e60 | 944 | |
7442878f | 945 | case ON_VERTICAL_BORDER: |
e5d77022 | 946 | return Qvertical_line; |
d5783c40 | 947 | |
7442878f | 948 | case ON_HEADER_LINE: |
045dee35 | 949 | return Qheader_line; |
5500c422 | 950 | |
7442878f GM |
951 | case ON_LEFT_FRINGE: |
952 | return Qleft_fringe; | |
177c0ea7 | 953 | |
7442878f GM |
954 | case ON_RIGHT_FRINGE: |
955 | return Qright_fringe; | |
fbad6f9a | 956 | |
49b996e7 GM |
957 | case ON_LEFT_MARGIN: |
958 | return Qleft_margin; | |
177c0ea7 | 959 | |
49b996e7 GM |
960 | case ON_RIGHT_MARGIN: |
961 | return Qright_margin; | |
962 | ||
6487f669 RS |
963 | case ON_SCROLL_BAR: |
964 | /* Historically we are supposed to return nil in this case. */ | |
965 | return Qnil; | |
966 | ||
d5783c40 JB |
967 | default: |
968 | abort (); | |
969 | } | |
970 | } | |
971 | ||
67492200 GM |
972 | |
973 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
974 | Check if window W contains coordinates specified by USER_DATA which |
975 | is actually a pointer to a struct check_window_data CW. | |
976 | ||
977 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
978 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 979 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
980 | zero from this function to stop iterating over windows. */ |
981 | ||
982 | struct check_window_data | |
983 | { | |
984 | Lisp_Object *window; | |
341f3858 KS |
985 | int *x, *y; |
986 | enum window_part *part; | |
f95464e4 | 987 | }; |
67492200 GM |
988 | |
989 | static int | |
f95464e4 | 990 | check_window_containing (w, user_data) |
67492200 | 991 | struct window *w; |
f95464e4 | 992 | void *user_data; |
67492200 | 993 | { |
f95464e4 | 994 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
995 | enum window_part found; |
996 | int continue_p = 1; | |
67492200 | 997 | |
f95464e4 | 998 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 999 | if (found != ON_NOTHING) |
67492200 | 1000 | { |
341f3858 | 1001 | *cw->part = found; |
f95464e4 | 1002 | XSETWINDOW (*cw->window, w); |
7442878f | 1003 | continue_p = 0; |
67492200 | 1004 | } |
177c0ea7 | 1005 | |
7442878f | 1006 | return continue_p; |
67492200 GM |
1007 | } |
1008 | ||
1009 | ||
5500c422 | 1010 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1011 | return it as a Lisp_Object. |
1012 | ||
1013 | If X, Y is on one of the window's special `window_part' elements, | |
1014 | set *PART to the id of that element, and return X and Y converted | |
1015 | to window relative coordinates in WX and WY. | |
1016 | ||
341f3858 | 1017 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1018 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1019 | ||
1020 | This function was previously implemented with a loop cycling over | |
1021 | windows with Fnext_window, and starting with the frame's selected | |
1022 | window. It turned out that this doesn't work with an | |
1023 | implementation of next_window using Vwindow_list, because | |
1024 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1025 | tree of F when this function is called asynchronously from | |
1026 | note_mouse_highlight. The original loop didn't terminate in this | |
1027 | case. */ | |
5500c422 | 1028 | |
7ab12479 | 1029 | Lisp_Object |
949cf20f | 1030 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1031 | struct frame *f; |
7ab12479 | 1032 | int x, y; |
341f3858 | 1033 | enum window_part *part; |
949cf20f | 1034 | int *wx, *wy; |
9ea173e8 | 1035 | int tool_bar_p; |
7ab12479 | 1036 | { |
67492200 | 1037 | Lisp_Object window; |
f95464e4 | 1038 | struct check_window_data cw; |
341f3858 KS |
1039 | enum window_part dummy; |
1040 | ||
1041 | if (part == 0) | |
1042 | part = &dummy; | |
5500c422 | 1043 | |
67492200 | 1044 | window = Qnil; |
f95464e4 GM |
1045 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1046 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1047 | |
67492200 GM |
1048 | /* If not found above, see if it's in the tool bar window, if a tool |
1049 | bar exists. */ | |
1050 | if (NILP (window) | |
1051 | && tool_bar_p | |
1052 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1053 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1054 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1055 | != ON_NOTHING)) | |
5500c422 | 1056 | { |
341f3858 | 1057 | *part = ON_TEXT; |
67492200 | 1058 | window = f->tool_bar_window; |
5500c422 | 1059 | } |
37962e60 | 1060 | |
949cf20f KS |
1061 | if (wx) *wx = x; |
1062 | if (wy) *wy = y; | |
1063 | ||
67492200 | 1064 | return window; |
7ab12479 JB |
1065 | } |
1066 | ||
ab17c3f2 | 1067 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1068 | doc: /* Return window containing coordinates X and Y on FRAME. |
1069 | If omitted, FRAME defaults to the currently selected frame. | |
1070 | The top left corner of the frame is considered to be row 0, | |
1071 | column 0. */) | |
1072 | (x, y, frame) | |
1073 | Lisp_Object x, y, frame; | |
7ab12479 | 1074 | { |
5500c422 | 1075 | struct frame *f; |
7ab12479 | 1076 | |
44fa5b1e | 1077 | if (NILP (frame)) |
1ae1a37d | 1078 | frame = selected_frame; |
b7826503 | 1079 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1080 | f = XFRAME (frame); |
7ab12479 | 1081 | |
5500c422 | 1082 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1083 | CHECK_NUMBER_OR_FLOAT (x); |
1084 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1085 | |
177c0ea7 | 1086 | return window_from_coordinates (f, |
2c77cf3b RS |
1087 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1088 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1089 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1090 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1091 | 0, 0, 0, 0); |
7ab12479 JB |
1092 | } |
1093 | ||
1094 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1095 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1096 | WINDOW defaults to the selected window. |
1097 | ||
fdb82f93 PJ |
1098 | For a nonselected window, this is the value point would have |
1099 | if that window were selected. | |
1100 | ||
1101 | Note that, when WINDOW is the selected window and its buffer | |
1102 | is also currently selected, the value returned is the same as (point). | |
1103 | It would be more strictly correct to return the `top-level' value | |
1104 | of point, outside of any save-excursion forms. | |
1105 | But that is hard to define. */) | |
1106 | (window) | |
7ab12479 JB |
1107 | Lisp_Object window; |
1108 | { | |
1109 | register struct window *w = decode_window (window); | |
1110 | ||
1111 | if (w == XWINDOW (selected_window) | |
1112 | && current_buffer == XBUFFER (w->buffer)) | |
1113 | return Fpoint (); | |
1114 | return Fmarker_position (w->pointm); | |
1115 | } | |
1116 | ||
1117 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1118 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1119 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1120 | This is updated by redisplay or by calling `set-window-start'. */) |
1121 | (window) | |
7ab12479 JB |
1122 | Lisp_Object window; |
1123 | { | |
1124 | return Fmarker_position (decode_window (window)->start); | |
1125 | } | |
1126 | ||
8646118f RS |
1127 | /* This is text temporarily removed from the doc string below. |
1128 | ||
fdb82f93 PJ |
1129 | This function returns nil if the position is not currently known. |
1130 | That happens when redisplay is preempted and doesn't finish. | |
1131 | If in that case you want to compute where the end of the window would | |
1132 | have been if redisplay had finished, do this: | |
1133 | (save-excursion | |
1134 | (goto-char (window-start window)) | |
1135 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1136 | (point))") */ |
1137 | ||
478292ed | 1138 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1139 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1140 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1141 | This is updated by redisplay, when it runs to completion. |
1142 | Simply changing the buffer text or setting `window-start' | |
1143 | does not update this value. | |
a0a37a6f LT |
1144 | Return nil if there is no recorded value. \(This can happen if the |
1145 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1146 | If UPDATE is non-nil, compute the up-to-date position |
1147 | if it isn't already recorded. */) | |
1148 | (window, update) | |
478292ed | 1149 | Lisp_Object window, update; |
7ab12479 JB |
1150 | { |
1151 | Lisp_Object value; | |
1152 | struct window *w = decode_window (window); | |
5a41ab94 | 1153 | Lisp_Object buf; |
31790df3 | 1154 | struct buffer *b; |
5a41ab94 RS |
1155 | |
1156 | buf = w->buffer; | |
b7826503 | 1157 | CHECK_BUFFER (buf); |
b3a10345 | 1158 | b = XBUFFER (buf); |
5a41ab94 | 1159 | |
8646118f | 1160 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1161 | /* If we don't know the end position, return nil. |
1162 | The user can compute it with vertical-motion if he wants to. | |
1163 | It would be nicer to do it automatically, | |
1164 | but that's so slow that it would probably bother people. */ | |
1165 | if (NILP (w->window_end_valid)) | |
1166 | return Qnil; | |
8646118f | 1167 | #endif |
7250968e | 1168 | |
478292ed RS |
1169 | if (! NILP (update) |
1170 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1171 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1172 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1173 | && !noninteractive) |
478292ed | 1174 | { |
cbc099e5 GM |
1175 | struct text_pos startp; |
1176 | struct it it; | |
b3a10345 KS |
1177 | struct buffer *old_buffer = NULL; |
1178 | ||
1179 | /* Cannot use Fvertical_motion because that function doesn't | |
1180 | cope with variable-height lines. */ | |
1181 | if (b != current_buffer) | |
1182 | { | |
1183 | old_buffer = current_buffer; | |
1184 | set_buffer_internal (b); | |
1185 | } | |
2d6d9df0 GM |
1186 | |
1187 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1188 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1189 | `-l' containing a call to `rmail' with subsequent other |
1190 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1191 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1192 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1193 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1194 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1195 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1196 | else |
cbc099e5 GM |
1197 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1198 | ||
cbc099e5 GM |
1199 | start_display (&it, w, startp); |
1200 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1201 | if (it.current_y < it.last_visible_y) |
1202 | move_it_past_eol (&it); | |
cbc099e5 | 1203 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1204 | |
99593a9d GM |
1205 | if (old_buffer) |
1206 | set_buffer_internal (old_buffer); | |
478292ed RS |
1207 | } |
1208 | else | |
b3a10345 | 1209 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1210 | |
1211 | return value; | |
1212 | } | |
1213 | ||
1214 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1215 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1216 | Return POS. */) | |
fdb82f93 | 1217 | (window, pos) |
7ab12479 JB |
1218 | Lisp_Object window, pos; |
1219 | { | |
1220 | register struct window *w = decode_window (window); | |
1221 | ||
b7826503 | 1222 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1223 | if (w == XWINDOW (selected_window) |
1224 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1225 | Fgoto_char (pos); |
1226 | else | |
1227 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1228 | |
0685cb3c GM |
1229 | /* We have to make sure that redisplay updates the window to show |
1230 | the new value of point. */ | |
1231 | if (!EQ (window, selected_window)) | |
799417bd | 1232 | ++windows_or_buffers_changed; |
177c0ea7 | 1233 | |
7ab12479 JB |
1234 | return pos; |
1235 | } | |
1236 | ||
1237 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1238 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1239 | WINDOW defaults to the selected window. Return POS. |
1240 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1241 | overriding motion of point in order to display at this exact start. */) | |
fdb82f93 | 1242 | (window, pos, noforce) |
7ab12479 JB |
1243 | Lisp_Object window, pos, noforce; |
1244 | { | |
1245 | register struct window *w = decode_window (window); | |
1246 | ||
b7826503 | 1247 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1248 | set_marker_restricted (w->start, pos, w->buffer); |
1249 | /* this is not right, but much easier than doing what is right. */ | |
1250 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1251 | if (NILP (noforce)) |
7ab12479 JB |
1252 | w->force_start = Qt; |
1253 | w->update_mode_line = Qt; | |
d834a2e9 | 1254 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1255 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1256 | if (!EQ (window, selected_window)) |
1257 | windows_or_buffers_changed++; | |
ce7fae7d | 1258 | |
7ab12479 JB |
1259 | return pos; |
1260 | } | |
1261 | ||
d653c8cc | 1262 | |
7ab12479 | 1263 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1264 | 0, 1, 0, |
1265 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 MR |
1266 | More precisely, return the value assigned by the last call of |
1267 | set-window-dedicated-`p' for WINDOW or nil if that function was never | |
1268 | called with WINDOW as its argument. WINDOW defaults to the selected | |
1269 | window. | |
d653c8cc MR |
1270 | |
1271 | When a window is dedicated to its buffer, `display-buffer' and | |
1272 | `set-window-buffer' will refrain from displaying another buffer in it. | |
1273 | `get-lru-window' and `get-largest-window' treat dedicated windows | |
12bb3111 MR |
1274 | specially. `delete-windows-on', `replace-buffer-in-windows', |
1275 | `quit-window' and `kill-buffer' can delete a dedicated window and the | |
1276 | containing frame. */) | |
fdb82f93 | 1277 | (window) |
7ab12479 JB |
1278 | Lisp_Object window; |
1279 | { | |
1280 | return decode_window (window)->dedicated; | |
1281 | } | |
1282 | ||
d207b766 RS |
1283 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1284 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1285 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1286 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1287 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1288 | Return FLAG. |
1289 | ||
1290 | When a window is dedicated to its buffer, `display-buffer' and | |
1291 | `set-window-buffer' will refrain from displaying another buffer in it. | |
1292 | `get-lru-window' and `get-largest-window' treat dedicated windows | |
12bb3111 MR |
1293 | specially. `delete-windows-on', `replace-buffer-in-windows', |
1294 | `quit-window' and `kill-buffer' can delete a dedicated window and the | |
1295 | containing frame. */) | |
d653c8cc MR |
1296 | (window, flag) |
1297 | Lisp_Object window, flag; | |
7ab12479 JB |
1298 | { |
1299 | register struct window *w = decode_window (window); | |
1300 | ||
d653c8cc | 1301 | w->dedicated = flag; |
7ab12479 JB |
1302 | return w->dedicated; |
1303 | } | |
1304 | ||
d653c8cc | 1305 | |
cfbb2395 JB |
1306 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1307 | 0, 1, 0, | |
d653c8cc MR |
1308 | doc: /* Return the parameters of WINDOW and their values. |
1309 | WINDOW defaults to the selected window. The return value is a list of | |
1310 | elements of the form (PARAMETER . VALUE). */) | |
cfbb2395 JB |
1311 | (window) |
1312 | Lisp_Object window; | |
1313 | { | |
927abf37 | 1314 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1315 | } |
1316 | ||
1317 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1318 | 2, 2, 0, | |
d653c8cc MR |
1319 | doc: /* Return WINDOW's value for PARAMETER. |
1320 | WINDOW defaults to the selected window. */) | |
cfbb2395 JB |
1321 | (window, parameter) |
1322 | Lisp_Object window, parameter; | |
1323 | { | |
927abf37 JB |
1324 | Lisp_Object result; |
1325 | ||
1326 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1327 | return CDR_SAFE (result); | |
cfbb2395 JB |
1328 | } |
1329 | ||
cfbb2395 JB |
1330 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1331 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1332 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1333 | WINDOW defaults to the selected window. Return VALUE. */) | |
cfbb2395 JB |
1334 | (window, parameter, value) |
1335 | Lisp_Object window, parameter, value; | |
1336 | { | |
1337 | register struct window *w = decode_window (window); | |
1338 | Lisp_Object old_alist_elt; | |
1339 | ||
1340 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1341 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1342 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1343 | else | |
1344 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1345 | return value; |
cfbb2395 JB |
1346 | } |
1347 | ||
1348 | ||
7ab12479 JB |
1349 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1350 | 0, 1, 0, | |
c85322d0 EZ |
1351 | doc: /* Return the display-table that WINDOW is using. |
1352 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1353 | (window) |
7ab12479 JB |
1354 | Lisp_Object window; |
1355 | { | |
1356 | return decode_window (window)->display_table; | |
1357 | } | |
1358 | ||
5500c422 GM |
1359 | /* Get the display table for use on window W. This is either W's |
1360 | display table or W's buffer's display table. Ignore the specified | |
1361 | tables if they are not valid; if no valid table is specified, | |
1362 | return 0. */ | |
7ab12479 | 1363 | |
319315f1 | 1364 | struct Lisp_Char_Table * |
7ab12479 JB |
1365 | window_display_table (w) |
1366 | struct window *w; | |
1367 | { | |
c756cdbe GM |
1368 | struct Lisp_Char_Table *dp = NULL; |
1369 | ||
1370 | if (DISP_TABLE_P (w->display_table)) | |
1371 | dp = XCHAR_TABLE (w->display_table); | |
1372 | else if (BUFFERP (w->buffer)) | |
1373 | { | |
1374 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1375 | |
c756cdbe GM |
1376 | if (DISP_TABLE_P (b->display_table)) |
1377 | dp = XCHAR_TABLE (b->display_table); | |
1378 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1379 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1380 | } | |
171d003c | 1381 | |
c756cdbe | 1382 | return dp; |
7ab12479 JB |
1383 | } |
1384 | ||
3a2712f9 | 1385 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1386 | doc: /* Set WINDOW's display-table to TABLE. */) |
1387 | (window, table) | |
7ab12479 JB |
1388 | register Lisp_Object window, table; |
1389 | { | |
1390 | register struct window *w; | |
7ab12479 JB |
1391 | |
1392 | w = decode_window (window); | |
1393 | w->display_table = table; | |
1394 | return table; | |
1395 | } | |
1396 | \f | |
1397 | /* Record info on buffer window w is displaying | |
1398 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1399 | static void |
7ab12479 JB |
1400 | unshow_buffer (w) |
1401 | register struct window *w; | |
1402 | { | |
12cae7c0 | 1403 | Lisp_Object buf; |
b73ea88e | 1404 | struct buffer *b; |
7ab12479 | 1405 | |
12cae7c0 | 1406 | buf = w->buffer; |
b73ea88e RS |
1407 | b = XBUFFER (buf); |
1408 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1409 | abort (); |
1410 | ||
573f41ab | 1411 | #if 0 |
7ab12479 JB |
1412 | if (w == XWINDOW (selected_window) |
1413 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1414 | /* Do this except when the selected window's buffer | |
1415 | is being removed from some other window. */ | |
573f41ab RS |
1416 | #endif |
1417 | /* last_window_start records the start position that this buffer | |
1418 | had in the last window to be disconnected from it. | |
1419 | Now that this statement is unconditional, | |
1420 | it is possible for the buffer to be displayed in the | |
1421 | selected window, while last_window_start reflects another | |
1422 | window which was recently showing the same buffer. | |
1423 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1424 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1425 | |
1426 | /* Point in the selected window's buffer | |
1427 | is actually stored in that buffer, and the window's pointm isn't used. | |
1428 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1429 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1430 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1431 | && !(WINDOWP (b->last_selected_window) |
1432 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1433 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1434 | temp_set_point_both (b, |
1435 | clip_to_bounds (BUF_BEGV (b), | |
1436 | XMARKER (w->pointm)->charpos, | |
1437 | BUF_ZV (b)), | |
1438 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1439 | marker_byte_position (w->pointm), | |
1440 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1441 | |
8801a864 KR |
1442 | if (WINDOWP (b->last_selected_window) |
1443 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1444 | b->last_selected_window = Qnil; |
7ab12479 JB |
1445 | } |
1446 | ||
1447 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1448 | static void |
7ab12479 JB |
1449 | replace_window (old, replacement) |
1450 | Lisp_Object old, replacement; | |
1451 | { | |
1452 | register Lisp_Object tem; | |
1453 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1454 | ||
44fa5b1e JB |
1455 | /* If OLD is its frame's root_window, then replacement is the new |
1456 | root_window for that frame. */ | |
7ab12479 | 1457 | |
7f4161e0 | 1458 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1459 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1460 | |
949cf20f KS |
1461 | p->left_col = o->left_col; |
1462 | p->top_line = o->top_line; | |
1463 | p->total_cols = o->total_cols; | |
1464 | p->total_lines = o->total_lines; | |
5500c422 GM |
1465 | p->desired_matrix = p->current_matrix = 0; |
1466 | p->vscroll = 0; | |
1467 | bzero (&p->cursor, sizeof (p->cursor)); | |
1468 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1469 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1470 | p->phys_cursor_type = -1; | |
4b26579e | 1471 | p->phys_cursor_width = -1; |
5500c422 GM |
1472 | p->must_be_updated_p = 0; |
1473 | p->pseudo_window_p = 0; | |
1474 | XSETFASTINT (p->window_end_vpos, 0); | |
1475 | XSETFASTINT (p->window_end_pos, 0); | |
1476 | p->window_end_valid = Qnil; | |
7bbb5782 | 1477 | p->frozen_window_start_p = 0; |
949cf20f | 1478 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1479 | |
1480 | p->next = tem = o->next; | |
265a9e55 | 1481 | if (!NILP (tem)) |
7ab12479 JB |
1482 | XWINDOW (tem)->prev = replacement; |
1483 | ||
1484 | p->prev = tem = o->prev; | |
265a9e55 | 1485 | if (!NILP (tem)) |
7ab12479 JB |
1486 | XWINDOW (tem)->next = replacement; |
1487 | ||
1488 | p->parent = tem = o->parent; | |
265a9e55 | 1489 | if (!NILP (tem)) |
7ab12479 JB |
1490 | { |
1491 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1492 | XWINDOW (tem)->vchild = replacement; | |
1493 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1494 | XWINDOW (tem)->hchild = replacement; | |
1495 | } | |
1496 | ||
1497 | /*** Here, if replacement is a vertical combination | |
1498 | and so is its new parent, we should make replacement's | |
1499 | children be children of that parent instead. ***/ | |
1500 | } | |
1501 | ||
1502 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1503 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1504 | (window) | |
7ab12479 | 1505 | register Lisp_Object window; |
543f5fb1 | 1506 | { |
eeca6f6f SM |
1507 | struct frame *f; |
1508 | if (NILP (window)) | |
1509 | window = selected_window; | |
1510 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); | |
543f5fb1 RS |
1511 | delete_window (window); |
1512 | ||
eeca6f6f | 1513 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1514 | |
1515 | return Qnil; | |
1516 | } | |
1517 | ||
5e14b1fc | 1518 | void |
543f5fb1 RS |
1519 | delete_window (window) |
1520 | register Lisp_Object window; | |
7ab12479 JB |
1521 | { |
1522 | register Lisp_Object tem, parent, sib; | |
1523 | register struct window *p; | |
1524 | register struct window *par; | |
951f9df5 | 1525 | struct frame *f; |
7ab12479 | 1526 | |
605be8af JB |
1527 | /* Because this function is called by other C code on non-leaf |
1528 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1529 | so we can't decode_window here. */ | |
eeca6f6f | 1530 | CHECK_WINDOW (window); |
7ab12479 | 1531 | p = XWINDOW (window); |
605be8af | 1532 | |
0d384044 | 1533 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1534 | if (NILP (p->buffer) |
1535 | && NILP (p->hchild) | |
1536 | && NILP (p->vchild)) | |
296b535c | 1537 | return; |
605be8af | 1538 | |
7ab12479 | 1539 | parent = p->parent; |
265a9e55 | 1540 | if (NILP (parent)) |
7ab12479 JB |
1541 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1542 | par = XWINDOW (parent); | |
1543 | ||
1544 | windows_or_buffers_changed++; | |
67492200 | 1545 | Vwindow_list = Qnil; |
951f9df5 GM |
1546 | f = XFRAME (WINDOW_FRAME (p)); |
1547 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1548 | |
605be8af JB |
1549 | /* Are we trying to delete any frame's selected window? */ |
1550 | { | |
192c3131 | 1551 | Lisp_Object swindow, pwindow; |
605be8af | 1552 | |
0def0403 RS |
1553 | /* See if the frame's selected window is either WINDOW |
1554 | or any subwindow of it, by finding all that window's parents | |
1555 | and comparing each one with WINDOW. */ | |
192c3131 | 1556 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1557 | |
192c3131 | 1558 | while (1) |
0def0403 | 1559 | { |
192c3131 RS |
1560 | pwindow = swindow; |
1561 | while (!NILP (pwindow)) | |
1562 | { | |
1563 | if (EQ (window, pwindow)) | |
1564 | break; | |
1565 | pwindow = XWINDOW (pwindow)->parent; | |
1566 | } | |
1567 | ||
1568 | /* If the window being deleted is not a parent of SWINDOW, | |
1569 | then SWINDOW is ok as the new selected window. */ | |
1570 | if (!EQ (window, pwindow)) | |
0def0403 | 1571 | break; |
192c3131 | 1572 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1573 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1574 | |
1575 | /* If we get back to the frame's selected window, | |
1576 | it means there was no acceptable alternative, | |
1577 | so we cannot delete. */ | |
1578 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1579 | error ("Cannot delete window"); | |
0def0403 RS |
1580 | } |
1581 | ||
192c3131 RS |
1582 | /* If we need to change SWINDOW, do it. */ |
1583 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1584 | { |
605be8af JB |
1585 | /* If we're about to delete the selected window on the |
1586 | selected frame, then we should use Fselect_window to select | |
1587 | the new window. On the other hand, if we're about to | |
1588 | delete the selected window on any other frame, we shouldn't do | |
1589 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1590 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1591 | Fselect_window (swindow, Qnil); |
605be8af | 1592 | else |
192c3131 | 1593 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1594 | } |
1595 | } | |
7ab12479 | 1596 | |
0d384044 RS |
1597 | /* Now we know we can delete this one. */ |
1598 | window_deletion_count++; | |
1599 | ||
7ab12479 JB |
1600 | tem = p->buffer; |
1601 | /* tem is null for dummy parent windows | |
1602 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1603 | if (!NILP (tem)) |
7ab12479 JB |
1604 | { |
1605 | unshow_buffer (p); | |
2d0834cc SM |
1606 | unchain_marker (XMARKER (p->pointm)); |
1607 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1608 | } |
1609 | ||
05e71564 GM |
1610 | /* Free window glyph matrices. It is sure that they are allocated |
1611 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1612 | events and other events that access glyph matrices are not | |
1613 | processed while we are changing them. */ | |
1614 | BLOCK_INPUT; | |
951f9df5 | 1615 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1616 | |
7ab12479 | 1617 | tem = p->next; |
265a9e55 | 1618 | if (!NILP (tem)) |
7ab12479 JB |
1619 | XWINDOW (tem)->prev = p->prev; |
1620 | ||
1621 | tem = p->prev; | |
265a9e55 | 1622 | if (!NILP (tem)) |
7ab12479 JB |
1623 | XWINDOW (tem)->next = p->next; |
1624 | ||
1625 | if (EQ (window, par->hchild)) | |
1626 | par->hchild = p->next; | |
1627 | if (EQ (window, par->vchild)) | |
1628 | par->vchild = p->next; | |
1629 | ||
1630 | /* Find one of our siblings to give our space to. */ | |
1631 | sib = p->prev; | |
265a9e55 | 1632 | if (NILP (sib)) |
7ab12479 JB |
1633 | { |
1634 | /* If p gives its space to its next sibling, that sibling needs | |
1635 | to have its top/left side pulled back to where p's is. | |
1636 | set_window_{height,width} will re-position the sibling's | |
1637 | children. */ | |
1638 | sib = p->next; | |
949cf20f KS |
1639 | XWINDOW (sib)->top_line = p->top_line; |
1640 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1641 | } |
1642 | ||
1643 | /* Stretch that sibling. */ | |
265a9e55 | 1644 | if (!NILP (par->vchild)) |
7ab12479 | 1645 | set_window_height (sib, |
949cf20f | 1646 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1647 | 1); |
265a9e55 | 1648 | if (!NILP (par->hchild)) |
7ab12479 | 1649 | set_window_width (sib, |
949cf20f | 1650 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1651 | 1); |
1652 | ||
1653 | /* If parent now has only one child, | |
1654 | put the child into the parent's place. */ | |
7ab12479 | 1655 | tem = par->hchild; |
265a9e55 | 1656 | if (NILP (tem)) |
7ab12479 | 1657 | tem = par->vchild; |
5494d7bc | 1658 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1659 | replace_window (parent, tem); |
5494d7bc JD |
1660 | par = XWINDOW (tem); |
1661 | } | |
605be8af JB |
1662 | |
1663 | /* Since we may be deleting combination windows, we must make sure that | |
1664 | not only p but all its children have been marked as deleted. */ | |
1665 | if (! NILP (p->hchild)) | |
1666 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1667 | else if (! NILP (p->vchild)) | |
1668 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1669 | ||
1670 | /* Mark this window as deleted. */ | |
1671 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1672 | |
5494d7bc JD |
1673 | if (! NILP (par->parent)) |
1674 | par = XWINDOW (par->parent); | |
1675 | ||
1676 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1677 | one of them. */ | |
ae12ecd7 | 1678 | |
5494d7bc JD |
1679 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1680 | { | |
1681 | p = XWINDOW (par->vchild); | |
1682 | par->vchild = p->vchild; | |
1683 | tem = p->vchild; | |
1684 | } | |
1685 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1686 | { | |
1687 | p = XWINDOW (par->hchild); | |
1688 | par->hchild = p->hchild; | |
1689 | tem = p->hchild; | |
1690 | } | |
1691 | else | |
1692 | p = 0; | |
1693 | ||
1694 | if (p) | |
1695 | { | |
1696 | while (! NILP (tem)) { | |
1697 | XWINDOW (tem)->parent = p->parent; | |
1698 | if (NILP (XWINDOW (tem)->next)) | |
1699 | break; | |
1700 | tem = XWINDOW (tem)->next; | |
1701 | } | |
1702 | if (! NILP (tem)) { | |
1703 | /* The next of the v/hchild we are removing is now the next of the | |
1704 | last child for the v/hchild: | |
1705 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1706 | | | |
1707 | -> next3 | |
1708 | After: v/hchild -> next1 -> next2 -> next3 | |
1709 | */ | |
1710 | XWINDOW (tem)->next = p->next; | |
1711 | if (! NILP (p->next)) | |
1712 | XWINDOW (p->next)->prev = tem; | |
1713 | } | |
1714 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1715 | } | |
1716 | ||
1717 | ||
5500c422 | 1718 | /* Adjust glyph matrices. */ |
951f9df5 | 1719 | adjust_glyphs (f); |
05e71564 | 1720 | UNBLOCK_INPUT; |
7ab12479 | 1721 | } |
67492200 GM |
1722 | |
1723 | ||
7ab12479 | 1724 | \f |
67492200 GM |
1725 | /*********************************************************************** |
1726 | Window List | |
1727 | ***********************************************************************/ | |
1728 | ||
f95464e4 GM |
1729 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1730 | pointer. This is a callback function for foreach_window, used in | |
1731 | function window_list. */ | |
67492200 GM |
1732 | |
1733 | static int | |
f95464e4 | 1734 | add_window_to_list (w, user_data) |
67492200 | 1735 | struct window *w; |
f95464e4 | 1736 | void *user_data; |
67492200 | 1737 | { |
f95464e4 | 1738 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1739 | Lisp_Object window; |
1740 | XSETWINDOW (window, w); | |
212116d6 | 1741 | *list = Fcons (window, *list); |
67492200 GM |
1742 | return 1; |
1743 | } | |
1744 | ||
1745 | ||
1746 | /* Return a list of all windows, for use by next_window. If | |
1747 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1748 | list, cache it in Vwindow_list, and return that. */ | |
1749 | ||
1750 | static Lisp_Object | |
1751 | window_list () | |
1752 | { | |
1753 | if (!CONSP (Vwindow_list)) | |
1754 | { | |
1755 | Lisp_Object tail; | |
212116d6 | 1756 | |
67492200 GM |
1757 | Vwindow_list = Qnil; |
1758 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1759 | { |
1760 | Lisp_Object args[2]; | |
1761 | ||
1762 | /* We are visiting windows in canonical order, and add | |
1763 | new windows at the front of args[1], which means we | |
1764 | have to reverse this list at the end. */ | |
1765 | args[1] = Qnil; | |
1766 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1767 | args[0] = Vwindow_list; | |
1768 | args[1] = Fnreverse (args[1]); | |
1769 | Vwindow_list = Fnconc (2, args); | |
1770 | } | |
67492200 | 1771 | } |
177c0ea7 | 1772 | |
67492200 GM |
1773 | return Vwindow_list; |
1774 | } | |
1775 | ||
1776 | ||
118ea242 GM |
1777 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1778 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1779 | |
118ea242 GM |
1780 | MINIBUF t means WINDOW may be minibuffer windows. |
1781 | `lambda' means WINDOW may not be a minibuffer window. | |
1782 | a window means a specific minibuffer window | |
67492200 | 1783 | |
118ea242 GM |
1784 | ALL_FRAMES t means search all frames, |
1785 | nil means search just current frame, | |
1786 | `visible' means search just visible frames, | |
1787 | 0 means search visible and iconified frames, | |
1788 | a window means search the frame that window belongs to, | |
1789 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1790 | |
1791 | static int | |
118ea242 GM |
1792 | candidate_window_p (window, owindow, minibuf, all_frames) |
1793 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1794 | { |
1795 | struct window *w = XWINDOW (window); | |
1796 | struct frame *f = XFRAME (w->frame); | |
1797 | int candidate_p = 1; | |
1798 | ||
1799 | if (!BUFFERP (w->buffer)) | |
1800 | candidate_p = 0; | |
1801 | else if (MINI_WINDOW_P (w) | |
1802 | && (EQ (minibuf, Qlambda) | |
1803 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1804 | { | |
1805 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1806 | If it is a window, consider only that one. */ | |
1807 | candidate_p = 0; | |
1808 | } | |
118ea242 GM |
1809 | else if (EQ (all_frames, Qt)) |
1810 | candidate_p = 1; | |
67492200 | 1811 | else if (NILP (all_frames)) |
118ea242 GM |
1812 | { |
1813 | xassert (WINDOWP (owindow)); | |
1814 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1815 | } | |
67492200 GM |
1816 | else if (EQ (all_frames, Qvisible)) |
1817 | { | |
1818 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1819 | candidate_p = FRAME_VISIBLE_P (f) |
1820 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1821 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1822 | ||
67492200 GM |
1823 | } |
1824 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1825 | { | |
1826 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1827 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1828 | #ifdef HAVE_X_WINDOWS | |
1829 | /* Yuck!! If we've just created the frame and the | |
1830 | window-manager requested the user to place it | |
1831 | manually, the window may still not be considered | |
1832 | `visible'. I'd argue it should be at least | |
1833 | something like `iconified', but don't know how to do | |
1834 | that yet. --Stef */ | |
1835 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1836 | && !f->output_data.x->has_been_visible) | |
1837 | #endif | |
de509a60 SM |
1838 | ) |
1839 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1840 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1841 | } |
67492200 GM |
1842 | else if (WINDOWP (all_frames)) |
1843 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1844 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1845 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1846 | else if (FRAMEP (all_frames)) |
1847 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1848 | |
1849 | return candidate_p; | |
1850 | } | |
1851 | ||
1852 | ||
1853 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1854 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1855 | ALL_FRAMES. */ | |
1856 | ||
1857 | static void | |
1858 | decode_next_window_args (window, minibuf, all_frames) | |
1859 | Lisp_Object *window, *minibuf, *all_frames; | |
1860 | { | |
1861 | if (NILP (*window)) | |
1862 | *window = selected_window; | |
1863 | else | |
b7826503 | 1864 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1865 | |
67492200 GM |
1866 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1867 | does. */ | |
1868 | if (NILP (*minibuf)) | |
1869 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1870 | else if (!EQ (*minibuf, Qt)) | |
1871 | *minibuf = Qlambda; | |
177c0ea7 | 1872 | |
67492200 GM |
1873 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1874 | => count none of them, or a specific minibuffer window (the | |
1875 | active one) to count. */ | |
1876 | ||
1877 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1878 | if (NILP (*all_frames)) | |
1879 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1880 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1881 | : Qnil); | |
1882 | else if (EQ (*all_frames, Qvisible)) | |
1883 | ; | |
0f8fe9a2 | 1884 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1885 | ; |
1886 | else if (FRAMEP (*all_frames)) | |
1887 | ; | |
1888 | else if (!EQ (*all_frames, Qt)) | |
1889 | *all_frames = Qnil; | |
177c0ea7 | 1890 | |
67492200 GM |
1891 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1892 | search just current frame, `visible' meaning search just visible | |
1893 | frames, 0 meaning search visible and iconified frames, or a | |
1894 | window, meaning search the frame that window belongs to, or a | |
1895 | frame, meaning consider windows on that frame, only. */ | |
1896 | } | |
1897 | ||
1898 | ||
1899 | /* Return the next or previous window of WINDOW in canonical ordering | |
1900 | of windows. NEXT_P non-zero means return the next window. See the | |
1901 | documentation string of next-window for the meaning of MINIBUF and | |
1902 | ALL_FRAMES. */ | |
1903 | ||
1904 | static Lisp_Object | |
1905 | next_window (window, minibuf, all_frames, next_p) | |
1906 | Lisp_Object window, minibuf, all_frames; | |
1907 | int next_p; | |
1908 | { | |
1909 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1910 | |
67492200 GM |
1911 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1912 | return the first window on the frame. */ | |
1913 | if (FRAMEP (all_frames) | |
1914 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1915 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1916 | |
212116d6 | 1917 | if (next_p) |
67492200 GM |
1918 | { |
1919 | Lisp_Object list; | |
177c0ea7 | 1920 | |
67492200 GM |
1921 | /* Find WINDOW in the list of all windows. */ |
1922 | list = Fmemq (window, window_list ()); | |
1923 | ||
1924 | /* Scan forward from WINDOW to the end of the window list. */ | |
1925 | if (CONSP (list)) | |
1926 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1927 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1928 | break; |
1929 | ||
1930 | /* Scan from the start of the window list up to WINDOW. */ | |
1931 | if (!CONSP (list)) | |
1932 | for (list = Vwindow_list; | |
1933 | CONSP (list) && !EQ (XCAR (list), window); | |
1934 | list = XCDR (list)) | |
118ea242 | 1935 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1936 | break; |
1937 | ||
1938 | if (CONSP (list)) | |
1939 | window = XCAR (list); | |
1940 | } | |
1941 | else | |
1942 | { | |
1943 | Lisp_Object candidate, list; | |
177c0ea7 | 1944 | |
67492200 GM |
1945 | /* Scan through the list of windows for candidates. If there are |
1946 | candidate windows in front of WINDOW, the last one of these | |
1947 | is the one we want. If there are candidates following WINDOW | |
1948 | in the list, again the last one of these is the one we want. */ | |
1949 | candidate = Qnil; | |
1950 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1951 | { | |
1952 | if (EQ (XCAR (list), window)) | |
1953 | { | |
1954 | if (WINDOWP (candidate)) | |
1955 | break; | |
1956 | } | |
118ea242 GM |
1957 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1958 | all_frames)) | |
67492200 GM |
1959 | candidate = XCAR (list); |
1960 | } | |
1961 | ||
1962 | if (WINDOWP (candidate)) | |
1963 | window = candidate; | |
1964 | } | |
1965 | ||
1966 | return window; | |
1967 | } | |
7ab12479 | 1968 | |
7ab12479 | 1969 | |
26f6279d | 1970 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1971 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1972 | If omitted, WINDOW defaults to the selected window. | |
1973 | ||
1974 | Optional second arg MINIBUF t means count the minibuffer window even | |
1975 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1976 | it is active. MINIBUF neither t nor nil means not to count the | |
1977 | minibuffer even if it is active. | |
1978 | ||
1979 | Several frames may share a single minibuffer; if the minibuffer | |
1980 | counts, all windows on all frames that share that minibuffer count | |
1981 | too. Therefore, `next-window' can be used to iterate through the | |
1982 | set of windows even when the minibuffer is on another frame. If the | |
1983 | minibuffer does not count, only windows from WINDOW's frame count. | |
1984 | ||
1985 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1986 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1987 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1988 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1989 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1990 | Anything else means restrict to WINDOW's frame. | |
1991 | ||
1992 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1993 | `next-window' to iterate through the entire cycle of acceptable | |
1994 | windows, eventually ending up back at the window you started with. | |
1995 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1996 | (window, minibuf, all_frames) | |
67492200 | 1997 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1998 | { |
67492200 | 1999 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2000 | } |
2001 | ||
67492200 | 2002 | |
26f6279d | 2003 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
2004 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
2005 | If omitted, WINDOW defaults to the selected window. | |
2006 | ||
2007 | Optional second arg MINIBUF t means count the minibuffer window even | |
2008 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
2009 | it is active. MINIBUF neither t nor nil means not to count the | |
2010 | minibuffer even if it is active. | |
2011 | ||
2012 | Several frames may share a single minibuffer; if the minibuffer | |
2013 | counts, all windows on all frames that share that minibuffer count | |
2014 | too. Therefore, `previous-window' can be used to iterate through | |
2015 | the set of windows even when the minibuffer is on another frame. If | |
2016 | the minibuffer does not count, only windows from WINDOW's frame count | |
2017 | ||
2018 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
2019 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
2020 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
2021 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
2022 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
2023 | Anything else means restrict to WINDOW's frame. | |
2024 | ||
2025 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2026 | `previous-window' to iterate through the entire cycle of acceptable | |
2027 | windows, eventually ending up back at the window you started with. | |
2028 | `next-window' traverses the same cycle, in the reverse order. */) | |
2029 | (window, minibuf, all_frames) | |
67492200 | 2030 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2031 | { |
67492200 | 2032 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2033 | } |
2034 | ||
67492200 | 2035 | |
62c07cc7 | 2036 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
2037 | doc: /* Select the ARG'th different window on this frame. |
2038 | All windows on current frame are arranged in a cyclic order. | |
2039 | This command selects the window ARG steps away in that order. | |
c2755926 | 2040 | A negative ARG moves in the opposite order. The optional second |
8cd0d661 | 2041 | argument ALL-FRAMES has the same meaning as in `next-window', which see. */) |
fdb82f93 | 2042 | (arg, all_frames) |
67492200 | 2043 | Lisp_Object arg, all_frames; |
7ab12479 | 2044 | { |
67492200 GM |
2045 | Lisp_Object window; |
2046 | int i; | |
7ab12479 | 2047 | |
b7826503 | 2048 | CHECK_NUMBER (arg); |
67492200 | 2049 | window = selected_window; |
177c0ea7 | 2050 | |
67492200 GM |
2051 | for (i = XINT (arg); i > 0; --i) |
2052 | window = Fnext_window (window, Qnil, all_frames); | |
2053 | for (; i < 0; ++i) | |
2054 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2055 | |
14d87dc9 | 2056 | Fselect_window (window, Qnil); |
7ab12479 JB |
2057 | return Qnil; |
2058 | } | |
67492200 GM |
2059 | |
2060 | ||
2061 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2062 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2063 | FRAME nil or omitted means use the selected frame. | |
2064 | WINDOW nil or omitted means use the selected window. | |
2065 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2066 | MINIBUF nil or omitted means include the minibuffer window only | |
2067 | if it's active. | |
2068 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2069 | (frame, minibuf, window) | |
cd2904bd GM |
2070 | Lisp_Object frame, minibuf, window; |
2071 | { | |
cd2904bd | 2072 | if (NILP (window)) |
acc6289a SM |
2073 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2074 | CHECK_WINDOW (window); | |
cd2904bd GM |
2075 | if (NILP (frame)) |
2076 | frame = selected_frame; | |
2077 | ||
2078 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2079 | error ("Window is on a different frame"); | |
2080 | ||
2081 | return window_list_1 (window, minibuf, frame); | |
2082 | } | |
2083 | ||
2084 | ||
2085 | /* Return a list of windows in canonical ordering. Arguments are like | |
2086 | for `next-window'. */ | |
2087 | ||
2088 | static Lisp_Object | |
2089 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2090 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2091 | { |
403de3b4 | 2092 | Lisp_Object tail, list, rest; |
67492200 GM |
2093 | |
2094 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2095 | list = Qnil; | |
177c0ea7 | 2096 | |
67492200 | 2097 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2098 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2099 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2100 | |
403de3b4 RS |
2101 | /* Rotate the list to start with WINDOW. */ |
2102 | list = Fnreverse (list); | |
2103 | rest = Fmemq (window, list); | |
2104 | if (!NILP (rest) && !EQ (rest, list)) | |
2105 | { | |
1725a7c9 | 2106 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2107 | ; |
2108 | XSETCDR (tail, Qnil); | |
2109 | list = nconc2 (rest, list); | |
2110 | } | |
2111 | return list; | |
67492200 GM |
2112 | } |
2113 | ||
2114 | ||
7ab12479 JB |
2115 | \f |
2116 | /* Look at all windows, performing an operation specified by TYPE | |
2117 | with argument OBJ. | |
75d8f668 | 2118 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2119 | Qnil, look at just the selected frame; |
89bca612 | 2120 | Qvisible, look at visible frames; |
75d8f668 | 2121 | a frame, just look at windows on that frame. |
85fe3b5e | 2122 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2123 | |
2124 | enum window_loop | |
2125 | { | |
2126 | WINDOW_LOOP_UNUSED, | |
2127 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2128 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2129 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2130 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2131 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2132 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2133 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2134 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2135 | }; |
2136 | ||
2137 | static Lisp_Object | |
44fa5b1e | 2138 | window_loop (type, obj, mini, frames) |
7ab12479 | 2139 | enum window_loop type; |
118ea242 | 2140 | Lisp_Object obj, frames; |
7ab12479 JB |
2141 | int mini; |
2142 | { | |
118ea242 GM |
2143 | Lisp_Object window, windows, best_window, frame_arg; |
2144 | struct frame *f; | |
ffdc852d | 2145 | struct gcpro gcpro1; |
177c0ea7 | 2146 | |
44fa5b1e JB |
2147 | /* If we're only looping through windows on a particular frame, |
2148 | frame points to that frame. If we're looping through windows | |
2149 | on all frames, frame is 0. */ | |
2150 | if (FRAMEP (frames)) | |
118ea242 | 2151 | f = XFRAME (frames); |
44fa5b1e | 2152 | else if (NILP (frames)) |
118ea242 | 2153 | f = SELECTED_FRAME (); |
7ab12479 | 2154 | else |
118ea242 | 2155 | f = NULL; |
177c0ea7 | 2156 | |
118ea242 | 2157 | if (f) |
89bca612 | 2158 | frame_arg = Qlambda; |
0f8fe9a2 | 2159 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2160 | frame_arg = frames; |
89bca612 RS |
2161 | else if (EQ (frames, Qvisible)) |
2162 | frame_arg = frames; | |
118ea242 GM |
2163 | else |
2164 | frame_arg = Qt; | |
7ab12479 | 2165 | |
89bca612 RS |
2166 | /* frame_arg is Qlambda to stick to one frame, |
2167 | Qvisible to consider all visible frames, | |
2168 | or Qt otherwise. */ | |
2169 | ||
7ab12479 | 2170 | /* Pick a window to start with. */ |
017b2bad | 2171 | if (WINDOWP (obj)) |
118ea242 GM |
2172 | window = obj; |
2173 | else if (f) | |
2174 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2175 | else |
118ea242 | 2176 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2177 | |
cd2904bd | 2178 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2179 | GCPRO1 (windows); |
7ab12479 | 2180 | best_window = Qnil; |
118ea242 | 2181 | |
e67a1dea | 2182 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2183 | { |
118ea242 | 2184 | struct window *w; |
177c0ea7 | 2185 | |
118ea242 GM |
2186 | window = XCAR (windows); |
2187 | w = XWINDOW (window); | |
177c0ea7 | 2188 | |
118ea242 GM |
2189 | /* Note that we do not pay attention here to whether the frame |
2190 | is visible, since Fwindow_list skips non-visible frames if | |
2191 | that is desired, under the control of frame_arg. */ | |
2192 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2193 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2194 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2195 | || (mini && minibuf_level > 0)) |
2196 | switch (type) | |
2197 | { | |
2198 | case GET_BUFFER_WINDOW: | |
118ea242 | 2199 | if (EQ (w->buffer, obj) |
5c204627 RS |
2200 | /* Don't find any minibuffer window |
2201 | except the one that is currently in use. */ | |
118ea242 GM |
2202 | && (MINI_WINDOW_P (w) |
2203 | ? EQ (window, minibuf_window) | |
2204 | : 1)) | |
2205 | { | |
5ddc1b75 GM |
2206 | if (NILP (best_window)) |
2207 | best_window = window; | |
2208 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2209 | /* Prefer to return selected-window. */ |
2210 | RETURN_UNGCPRO (window); | |
2211 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2212 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2213 | best_window = window; |
118ea242 | 2214 | } |
7ab12479 JB |
2215 | break; |
2216 | ||
2217 | case GET_LRU_WINDOW: | |
20b69789 SM |
2218 | /* `obj' is an integer encoding a bitvector. |
2219 | `obj & 1' means consider only full-width windows. | |
2220 | `obj & 2' means consider also dedicated windows. */ | |
2221 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2222 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2223 | /* Minibuffer windows are always ignored. */ |
2224 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2225 | break; |
265a9e55 | 2226 | if (NILP (best_window) |
7ab12479 | 2227 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2228 | > XFASTINT (w->use_time))) |
2229 | best_window = window; | |
7ab12479 JB |
2230 | break; |
2231 | ||
2232 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2233 | if (!EQ (window, obj)) |
2234 | Fdelete_window (window); | |
7ab12479 JB |
2235 | break; |
2236 | ||
2237 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2238 | if (EQ (w->buffer, obj)) |
7ab12479 | 2239 | { |
118ea242 | 2240 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2241 | |
2242 | /* If this window is dedicated, and in a frame of its own, | |
2243 | kill the frame. */ | |
118ea242 GM |
2244 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2245 | && !NILP (w->dedicated) | |
3548e138 | 2246 | && other_visible_frames (f)) |
7ab12479 | 2247 | { |
3548e138 RS |
2248 | /* Skip the other windows on this frame. |
2249 | There might be one, the minibuffer! */ | |
118ea242 GM |
2250 | while (CONSP (XCDR (windows)) |
2251 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2252 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2253 | windows = XCDR (windows); | |
177c0ea7 | 2254 | |
3548e138 | 2255 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2256 | Fdelete_frame (w->frame, Qnil); |
2257 | } | |
2258 | else if (NILP (w->parent)) | |
2259 | { | |
2260 | /* If we're deleting the buffer displayed in the | |
2261 | only window on the frame, find a new buffer to | |
2262 | display there. */ | |
2263 | Lisp_Object buffer; | |
2264 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2265 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2266 | if (EQ (window, selected_window)) |
2267 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2268 | } |
2269 | else | |
118ea242 | 2270 | Fdelete_window (window); |
7ab12479 JB |
2271 | } |
2272 | break; | |
2273 | ||
2274 | case GET_LARGEST_WINDOW: | |
20b69789 | 2275 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2276 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2277 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2278 | break; |
177c0ea7 | 2279 | |
c930dfab | 2280 | if (NILP (best_window)) |
118ea242 | 2281 | best_window = window; |
c930dfab GM |
2282 | else |
2283 | { | |
2284 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2285 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2286 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2287 | best_window = window; |
2288 | } | |
7ab12479 JB |
2289 | } |
2290 | break; | |
2291 | ||
2292 | case UNSHOW_BUFFER: | |
118ea242 | 2293 | if (EQ (w->buffer, obj)) |
7ab12479 | 2294 | { |
118ea242 GM |
2295 | Lisp_Object buffer; |
2296 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2297 | |
7ab12479 | 2298 | /* Find another buffer to show in this window. */ |
118ea242 | 2299 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2300 | |
38ab08d1 RS |
2301 | /* If this window is dedicated, and in a frame of its own, |
2302 | kill the frame. */ | |
118ea242 GM |
2303 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2304 | && !NILP (w->dedicated) | |
38ab08d1 | 2305 | && other_visible_frames (f)) |
45945a7b RS |
2306 | { |
2307 | /* Skip the other windows on this frame. | |
2308 | There might be one, the minibuffer! */ | |
118ea242 GM |
2309 | while (CONSP (XCDR (windows)) |
2310 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2311 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2312 | windows = XCDR (windows); | |
177c0ea7 | 2313 | |
45945a7b | 2314 | /* Now we can safely delete the frame. */ |
118ea242 | 2315 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2316 | } |
a5731348 SM |
2317 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2318 | { | |
2319 | Lisp_Object window; | |
2320 | XSETWINDOW (window, w); | |
2321 | /* If this window is dedicated and not the only window | |
2322 | in its frame, then kill it. */ | |
2323 | Fdelete_window (window); | |
2324 | } | |
38ab08d1 | 2325 | else |
38ab08d1 RS |
2326 | { |
2327 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2328 | w->dedicated = Qnil; |
949cf20f | 2329 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2330 | if (EQ (window, selected_window)) |
2331 | Fset_buffer (w->buffer); | |
38ab08d1 | 2332 | } |
7ab12479 JB |
2333 | } |
2334 | break; | |
3f8ab7bd | 2335 | |
6b61353c KH |
2336 | case REDISPLAY_BUFFER_WINDOWS: |
2337 | if (EQ (w->buffer, obj)) | |
2338 | { | |
2339 | mark_window_display_accurate (window, 0); | |
2340 | w->update_mode_line = Qt; | |
2341 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2342 | ++update_mode_lines; | |
2343 | best_window = window; | |
2344 | } | |
2345 | break; | |
2346 | ||
3f8ab7bd RS |
2347 | /* Check for a window that has a killed buffer. */ |
2348 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2349 | if (! NILP (w->buffer) |
2350 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2351 | abort (); |
118ea242 | 2352 | break; |
6bbd7a29 GM |
2353 | |
2354 | case WINDOW_LOOP_UNUSED: | |
2355 | break; | |
7ab12479 | 2356 | } |
7ab12479 | 2357 | } |
7ab12479 | 2358 | |
118ea242 | 2359 | UNGCPRO; |
7ab12479 | 2360 | return best_window; |
37962e60 | 2361 | } |
605be8af | 2362 | |
3f8ab7bd RS |
2363 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2364 | ||
233a4a2c | 2365 | void |
3f8ab7bd RS |
2366 | check_all_windows () |
2367 | { | |
2368 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2369 | } | |
2370 | ||
3cbb13c8 | 2371 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2372 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2373 | \(LRU means Least Recently Used.) |
2374 | ||
6b61353c | 2375 | Return a full-width window if possible. |
c2755926 | 2376 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2377 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2378 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2379 | If optional argument FRAME is `visible', search all visible frames. |
2380 | If FRAME is 0, search all visible and iconified frames. | |
2381 | If FRAME is t, search all frames. | |
2382 | If FRAME is nil, search only the selected frame. | |
2383 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2384 | (frame, dedicated) |
2385 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2386 | { |
2387 | register Lisp_Object w; | |
2388 | /* First try for a window that is full-width */ | |
20b69789 SM |
2389 | w = window_loop (GET_LRU_WINDOW, |
2390 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2391 | 0, frame); | |
265a9e55 | 2392 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2393 | return w; |
2394 | /* If none of them, try the rest */ | |
20b69789 SM |
2395 | return window_loop (GET_LRU_WINDOW, |
2396 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2397 | 0, frame); | |
7ab12479 JB |
2398 | } |
2399 | ||
3cbb13c8 | 2400 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2401 | doc: /* Return the largest window in area. |
c2755926 | 2402 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2403 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2404 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2405 | If optional argument FRAME is `visible', search all visible frames. |
2406 | If FRAME is 0, search all visible and iconified frames. | |
2407 | If FRAME is t, search all frames. | |
2408 | If FRAME is nil, search only the selected frame. | |
2409 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2410 | (frame, dedicated) |
2411 | Lisp_Object frame, dedicated; | |
7ab12479 | 2412 | { |
20b69789 | 2413 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2414 | frame); |
7ab12479 JB |
2415 | } |
2416 | ||
2417 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2418 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2419 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2420 | If optional argument FRAME is `visible', search all visible frames. |
2421 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2422 | If FRAME is t, search all frames. | |
2423 | If FRAME is nil, search only the selected frame. | |
2424 | If FRAME is a frame, search only that frame. */) | |
2425 | (buffer, frame) | |
2426 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2427 | { |
2428 | buffer = Fget_buffer (buffer); | |
017b2bad | 2429 | if (BUFFERP (buffer)) |
44fa5b1e | 2430 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2431 | else |
2432 | return Qnil; | |
2433 | } | |
2434 | ||
2435 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2436 | 0, 1, "", |
2437 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2438 | Only the frame WINDOW is on is affected. | |
2439 | This function tries to reduce display jumps | |
2440 | by keeping the text previously visible in WINDOW | |
2441 | in the same place on the frame. Doing this depends on | |
2442 | the value of (window-start WINDOW), so if calling this function | |
2443 | in a program gives strange scrolling, make sure the window-start | |
2444 | value is reasonable when this function is called. */) | |
2445 | (window) | |
7ab12479 JB |
2446 | Lisp_Object window; |
2447 | { | |
2448 | struct window *w; | |
00d3d838 | 2449 | int startpos; |
85fe3b5e | 2450 | int top, new_top; |
7ab12479 | 2451 | |
265a9e55 | 2452 | if (NILP (window)) |
7ab12479 JB |
2453 | window = selected_window; |
2454 | else | |
b7826503 | 2455 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2456 | w = XWINDOW (window); |
a2b38b3c | 2457 | |
00d3d838 | 2458 | startpos = marker_position (w->start); |
949cf20f | 2459 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2460 | |
a2b38b3c RS |
2461 | if (MINI_WINDOW_P (w) && top > 0) |
2462 | error ("Can't expand minibuffer to full frame"); | |
2463 | ||
70728a80 | 2464 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2465 | |
00d3d838 KH |
2466 | /* Try to minimize scrolling, by setting the window start to the point |
2467 | will cause the text at the old window start to be at the same place | |
2468 | on the frame. But don't try to do this if the window start is | |
2469 | outside the visible portion (as might happen when the display is | |
2470 | not current, due to typeahead). */ | |
949cf20f | 2471 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2472 | if (new_top != top |
2473 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2474 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2475 | { | |
2476 | struct position pos; | |
2477 | struct buffer *obuf = current_buffer; | |
2478 | ||
2479 | Fset_buffer (w->buffer); | |
2480 | /* This computation used to temporarily move point, but that can | |
2481 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2482 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2483 | |
b73ea88e | 2484 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2485 | w->window_end_valid = Qnil; |
b73ea88e RS |
2486 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2487 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2488 | : Qnil); |
80622eec RS |
2489 | /* We need to do this, so that the window-scroll-functions |
2490 | get called. */ | |
4d047f50 | 2491 | w->optional_new_start = Qt; |
00d3d838 KH |
2492 | |
2493 | set_buffer_internal (obuf); | |
2494 | } | |
5500c422 | 2495 | |
7ab12479 JB |
2496 | return Qnil; |
2497 | } | |
2498 | ||
2499 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2500 | 1, 2, "bDelete windows on (buffer): ", |
2501 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2502 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2503 | Optional second argument FRAME controls which frames are affected. |
2504 | If optional argument FRAME is `visible', search all visible frames. | |
2505 | If FRAME is 0, search all visible and iconified frames. | |
2506 | If FRAME is nil, search all frames. | |
2507 | If FRAME is t, search only the selected frame. | |
d653c8cc MR |
2508 | If FRAME is a frame, search only that frame. |
2509 | When a window showing BUFFER is dedicated and the only window of its | |
2510 | frame, that frame is deleted when there are other frames left. */) | |
fdb82f93 | 2511 | (buffer, frame) |
26f6279d | 2512 | Lisp_Object buffer, frame; |
7ab12479 | 2513 | { |
26f6279d JB |
2514 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2515 | expects. */ | |
c520265e RS |
2516 | if (NILP (frame)) |
2517 | frame = Qt; | |
2518 | else if (EQ (frame, Qt)) | |
2519 | frame = Qnil; | |
26f6279d | 2520 | |
265a9e55 | 2521 | if (!NILP (buffer)) |
7ab12479 JB |
2522 | { |
2523 | buffer = Fget_buffer (buffer); | |
b7826503 | 2524 | CHECK_BUFFER (buffer); |
26f6279d | 2525 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2526 | } |
177c0ea7 | 2527 | |
7ab12479 JB |
2528 | return Qnil; |
2529 | } | |
2530 | ||
2531 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2532 | Sreplace_buffer_in_windows, |
2533 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 | 2534 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
d653c8cc MR |
2535 | BUFFER may be a buffer or the name of an existing buffer. |
2536 | When a window showing BUFFER is dedicated that window is deleted. When | |
2537 | that window is the only window on its frame, that frame is deleted too | |
2538 | when there are other frames left. */) | |
fdb82f93 | 2539 | (buffer) |
7ab12479 JB |
2540 | Lisp_Object buffer; |
2541 | { | |
265a9e55 | 2542 | if (!NILP (buffer)) |
7ab12479 JB |
2543 | { |
2544 | buffer = Fget_buffer (buffer); | |
b7826503 | 2545 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2546 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2547 | } | |
2548 | return Qnil; | |
2549 | } | |
ff58478b RS |
2550 | |
2551 | /* Replace BUFFER with some other buffer in all windows | |
2552 | of all frames, even those on other keyboards. */ | |
2553 | ||
2554 | void | |
2555 | replace_buffer_in_all_windows (buffer) | |
2556 | Lisp_Object buffer; | |
2557 | { | |
2558 | Lisp_Object tail, frame; | |
2559 | ||
ff58478b RS |
2560 | /* A single call to window_loop won't do the job |
2561 | because it only considers frames on the current keyboard. | |
2562 | So loop manually over frames, and handle each one. */ | |
2563 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2564 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2565 | } |
7ab12479 JB |
2566 | \f |
2567 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2568 | |
2569 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2570 | might crash Emacs. */ | |
5500c422 | 2571 | |
a481b3ea | 2572 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2573 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2574 | |
047aaeb9 MR |
2575 | /* For wp non-zero the total number of columns of window w. Otherwise |
2576 | the total number of lines of w. */ | |
a481b3ea | 2577 | |
047aaeb9 MR |
2578 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2579 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2580 | |
2581 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2582 | minimum allowable size. */ | |
5500c422 | 2583 | |
605be8af | 2584 | void |
a481b3ea | 2585 | check_frame_size (frame, rows, cols) |
605be8af JB |
2586 | FRAME_PTR frame; |
2587 | int *rows, *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 GM |
2612 | static int |
2613 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2614 | struct window *w; | |
2615 | int width_p, check_siblings_p; | |
2616 | { | |
2617 | int fixed_p; | |
2618 | struct window *c; | |
177c0ea7 | 2619 | |
233a4a2c GM |
2620 | if (!NILP (w->hchild)) |
2621 | { | |
2622 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2623 | |
233a4a2c GM |
2624 | if (width_p) |
2625 | { | |
047aaeb9 | 2626 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2627 | children are. */ |
2628 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2629 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2630 | fixed_p = c == NULL; | |
2631 | } | |
2632 | else | |
2633 | { | |
047aaeb9 | 2634 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2635 | children is. */ |
2636 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2637 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2638 | fixed_p = c != NULL; | |
2639 | } | |
2640 | } | |
2641 | else if (!NILP (w->vchild)) | |
2642 | { | |
2643 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2644 | |
233a4a2c GM |
2645 | if (width_p) |
2646 | { | |
047aaeb9 | 2647 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2648 | children is. */ |
2649 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2650 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2651 | fixed_p = c != NULL; | |
2652 | } | |
2653 | else | |
2654 | { | |
047aaeb9 | 2655 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2656 | children are. */ |
2657 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2658 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2659 | fixed_p = c == NULL; | |
2660 | } | |
2661 | } | |
2662 | else if (BUFFERP (w->buffer)) | |
2663 | { | |
3df0580e AS |
2664 | struct buffer *old = current_buffer; |
2665 | Lisp_Object val; | |
177c0ea7 | 2666 | |
3df0580e AS |
2667 | current_buffer = XBUFFER (w->buffer); |
2668 | val = find_symbol_value (Qwindow_size_fixed); | |
2669 | current_buffer = old; | |
a34dfd12 | 2670 | |
3df0580e AS |
2671 | fixed_p = 0; |
2672 | if (!EQ (val, Qunbound)) | |
2673 | { | |
2674 | fixed_p = !NILP (val); | |
177c0ea7 | 2675 | |
3df0580e AS |
2676 | if (fixed_p |
2677 | && ((EQ (val, Qheight) && width_p) | |
2678 | || (EQ (val, Qwidth) && !width_p))) | |
2679 | fixed_p = 0; | |
233a4a2c GM |
2680 | } |
2681 | ||
2682 | /* Can't tell if this one is resizable without looking at | |
2683 | siblings. If all siblings are fixed-size this one is too. */ | |
2684 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2685 | { | |
2686 | Lisp_Object child; | |
177c0ea7 | 2687 | |
9beb8baa | 2688 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2689 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2690 | break; | |
2691 | ||
2692 | if (NILP (child)) | |
9beb8baa | 2693 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2694 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2695 | break; | |
2696 | ||
2697 | if (NILP (child)) | |
2698 | fixed_p = 1; | |
2699 | } | |
2700 | } | |
2701 | else | |
2702 | fixed_p = 1; | |
2703 | ||
2704 | return fixed_p; | |
2705 | } | |
177c0ea7 | 2706 | |
047aaeb9 MR |
2707 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2708 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2709 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2710 | return values that won't crash Emacs and don't hide components like | |
2711 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2712 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2713 | |
2714 | static int | |
047aaeb9 | 2715 | window_min_size_2 (w, width_p, safe_p) |
f1de8c77 | 2716 | struct window *w; |
047aaeb9 | 2717 | int width_p, safe_p; |
f1de8c77 | 2718 | { |
047aaeb9 MR |
2719 | /* We should consider buffer-local values of window_min_height and |
2720 | window_min_width here. */ | |
f1de8c77 | 2721 | if (width_p) |
047aaeb9 MR |
2722 | { |
2723 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 2724 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2725 | + WINDOW_SCROLL_BAR_COLS (w)); |
2726 | ||
2727 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2728 | } | |
f1de8c77 | 2729 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2730 | return 1; |
f1de8c77 | 2731 | else |
047aaeb9 MR |
2732 | { |
2733 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2734 | + ((BUFFERP (w->buffer) | |
2735 | && !NILP (XBUFFER (w->buffer)->mode_line_format)) | |
2736 | ? 1 : 0)); | |
f1de8c77 | 2737 | |
047aaeb9 MR |
2738 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2739 | } | |
f1de8c77 | 2740 | } |
233a4a2c | 2741 | |
047aaeb9 MR |
2742 | /* Return minimum size of window W, not taking fixed-width windows into |
2743 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2744 | return the minimum height. SAFE_P non-zero means ignore | |
2745 | window-min-height|width but just return values that won't crash Emacs | |
2746 | and don't hide components like fringes, scrollbars, or modelines. If | |
2747 | W is a combination window, compute the minimum size from the minimum | |
2748 | sizes of W's children. */ | |
233a4a2c GM |
2749 | |
2750 | static int | |
047aaeb9 | 2751 | window_min_size_1 (w, width_p, safe_p) |
c1636aa6 | 2752 | struct window *w; |
047aaeb9 | 2753 | int width_p, safe_p; |
c1636aa6 | 2754 | { |
233a4a2c | 2755 | struct window *c; |
c1636aa6 | 2756 | int size; |
177c0ea7 | 2757 | |
233a4a2c GM |
2758 | if (!NILP (w->hchild)) |
2759 | { | |
047aaeb9 | 2760 | /* W is a horizontal combination. */ |
233a4a2c GM |
2761 | c = XWINDOW (w->hchild); |
2762 | size = 0; | |
177c0ea7 | 2763 | |
233a4a2c GM |
2764 | if (width_p) |
2765 | { | |
047aaeb9 MR |
2766 | /* The minimum width of a horizontal combination is the sum of |
2767 | the minimum widths of its children. */ | |
233a4a2c GM |
2768 | while (c) |
2769 | { | |
047aaeb9 | 2770 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2771 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2772 | } | |
2773 | } | |
2774 | else | |
2775 | { | |
047aaeb9 MR |
2776 | /* The minimum height of a horizontal combination is the |
2777 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2778 | while (c) |
2779 | { | |
047aaeb9 | 2780 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2781 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2782 | } | |
2783 | } | |
2784 | } | |
2785 | else if (!NILP (w->vchild)) | |
2786 | { | |
047aaeb9 | 2787 | /* W is a vertical combination. */ |
233a4a2c GM |
2788 | c = XWINDOW (w->vchild); |
2789 | size = 0; | |
177c0ea7 | 2790 | |
233a4a2c GM |
2791 | if (width_p) |
2792 | { | |
047aaeb9 MR |
2793 | /* The minimum width of a vertical combination is the maximum |
2794 | of the minimum widths of its children. */ | |
233a4a2c GM |
2795 | while (c) |
2796 | { | |
047aaeb9 | 2797 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2798 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2799 | } | |
2800 | } | |
2801 | else | |
2802 | { | |
047aaeb9 MR |
2803 | /* The minimum height of a vertical combination is the sum of |
2804 | the minimum height of its children. */ | |
233a4a2c GM |
2805 | while (c) |
2806 | { | |
047aaeb9 | 2807 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2808 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2809 | } | |
2810 | } | |
2811 | } | |
c1636aa6 | 2812 | else |
047aaeb9 MR |
2813 | /* W is a leaf window. */ |
2814 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2815 | |
2816 | return size; | |
2817 | } | |
2818 | ||
233a4a2c | 2819 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2820 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2821 | return the minimum height. SAFE_P non-zero means ignore | |
2822 | window-min-height|width but just return values that won't crash Emacs | |
2823 | and don't hide components like fringes, scrollbars, or modelines. | |
2824 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2825 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2826 | |
233a4a2c | 2827 | static int |
047aaeb9 | 2828 | window_min_size (w, width_p, safe_p, ignore_fixed_p, fixed) |
233a4a2c | 2829 | struct window *w; |
047aaeb9 | 2830 | int width_p, safe_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2831 | { |
2832 | int size, fixed_p; | |
2833 | ||
f984d4fc GM |
2834 | if (ignore_fixed_p) |
2835 | fixed_p = 0; | |
2836 | else | |
2837 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2838 | |
233a4a2c GM |
2839 | if (fixed) |
2840 | *fixed = fixed_p; | |
177c0ea7 | 2841 | |
233a4a2c | 2842 | if (fixed_p) |
047aaeb9 | 2843 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2844 | else |
047aaeb9 | 2845 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2846 | |
233a4a2c GM |
2847 | return size; |
2848 | } | |
2849 | ||
2850 | ||
79fd290e | 2851 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2852 | Return 1 if window width is ok after adjustment; 0 if window |
2853 | is still too narrow. */ | |
2854 | ||
2855 | static int | |
2856 | adjust_window_margins (w) | |
2857 | struct window *w; | |
2858 | { | |
2859 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2860 | - WINDOW_FRINGE_COLS (w) | |
2861 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2862 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2863 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2864 | ||
2865 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2866 | return 1; | |
2867 | ||
2868 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2869 | return 0; | |
2870 | ||
2871 | /* Window's text area is too narrow, but reducing the window | |
2872 | margins will fix that. */ | |
2873 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2874 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2875 | { | |
2876 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2877 | w->left_margin_cols = w->right_margin_cols | |
2878 | = make_number (margin_cols/2); | |
2879 | else | |
2880 | w->right_margin_cols = make_number (margin_cols); | |
2881 | } | |
2882 | else | |
2883 | w->left_margin_cols = make_number (margin_cols); | |
2884 | return 1; | |
2885 | } | |
2886 | ||
047aaeb9 MR |
2887 | /* Calculate new sizes for windows in the list FORWARD when their |
2888 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
2889 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
2890 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
2891 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
2892 | shrink columns, otherwise shrink lines. | |
6b61353c | 2893 | |
047aaeb9 MR |
2894 | SAFE_P zero means windows may be sized down to window-min-height |
2895 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
2896 | non-zero means windows may be sized down to their minimum safe sizes | |
2897 | taking into account the space needed to display modelines, fringes, | |
2898 | and scrollbars. | |
6b61353c | 2899 | |
047aaeb9 MR |
2900 | This function returns an allocated array of new sizes that the caller |
2901 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
2902 | zero. A size zero means the window shall be deleted. Array index 0 | |
2903 | refers to the first window in FORWARD, 1 to the second, and so on. | |
2904 | ||
2905 | This function resizes windows proportionally to their size. It also | |
2906 | tries to preserve smaller windows by resizing larger windows before | |
2907 | resizing any window to zero. If resize_proportionally is non-nil for | |
2908 | a specific window, it will attempt to strictly resize that window | |
2909 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 2910 | static int * |
047aaeb9 MR |
2911 | shrink_windows (total, size, nchildren, shrinkable, resize_fixed_p, |
2912 | forward, width_p, safe_p) | |
2913 | int total, size, nchildren, shrinkable; | |
2914 | int resize_fixed_p, width_p, safe_p; | |
6b61353c KH |
2915 | Lisp_Object forward; |
2916 | { | |
2917 | int available_resize = 0; | |
047aaeb9 | 2918 | int *new_sizes, *min_sizes; |
6b61353c KH |
2919 | struct window *c; |
2920 | Lisp_Object child; | |
2921 | int smallest = total; | |
2922 | int total_removed = 0; | |
2923 | int total_shrink = total - size; | |
2924 | int i; | |
2925 | ||
2926 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 2927 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
2928 | |
2929 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2930 | { | |
2931 | int child_size; | |
2932 | ||
2933 | c = XWINDOW (child); | |
047aaeb9 | 2934 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 2935 | |
047aaeb9 | 2936 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
2937 | new_sizes[i] = -1; |
2938 | else | |
2939 | { | |
2940 | new_sizes[i] = child_size; | |
047aaeb9 MR |
2941 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
2942 | if (child_size > min_sizes[i] | |
2943 | && NILP (c->resize_proportionally)) | |
2944 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
2945 | } |
2946 | } | |
2947 | /* We might need to shrink some windows to zero. Find the smallest | |
2948 | windows and set them to 0 until we can fulfil the new size. */ | |
2949 | ||
2950 | while (shrinkable > 1 && size + available_resize < total) | |
2951 | { | |
2952 | for (i = 0; i < nchildren; ++i) | |
2953 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2954 | smallest = new_sizes[i]; | |
2955 | ||
2956 | for (i = 0; i < nchildren; ++i) | |
2957 | if (new_sizes[i] == smallest) | |
2958 | { | |
2959 | /* Resize this window down to zero. */ | |
2960 | new_sizes[i] = 0; | |
047aaeb9 MR |
2961 | if (smallest > min_sizes[i]) |
2962 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
2963 | available_resize += smallest; |
2964 | --shrinkable; | |
2965 | total_removed += smallest; | |
2966 | ||
ef614e04 JD |
2967 | /* We don't know what the smallest is now. */ |
2968 | smallest = total; | |
2969 | ||
6b61353c KH |
2970 | /* Out of for, just remove one window at the time and |
2971 | check again if we have enough space. */ | |
2972 | break; | |
2973 | } | |
2974 | } | |
2975 | ||
2976 | /* Now, calculate the new sizes. Try to shrink each window | |
2977 | proportional to its size. */ | |
2978 | for (i = 0; i < nchildren; ++i) | |
2979 | { | |
047aaeb9 | 2980 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 2981 | { |
047aaeb9 MR |
2982 | int to_shrink = total_shrink * new_sizes[i] / total; |
2983 | ||
2984 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
2985 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
2986 | new_sizes[i] -= to_shrink; |
2987 | total_removed += to_shrink; | |
2988 | } | |
2989 | } | |
2990 | ||
2991 | /* Any reminder due to rounding, we just subtract from windows | |
2992 | that are left and still can be shrunk. */ | |
2993 | while (total_shrink > total_removed) | |
2994 | { | |
ef614e04 JD |
2995 | int nonzero_sizes = 0; |
2996 | int nonzero_idx = -1; | |
2997 | ||
2998 | for (i = 0; i < nchildren; ++i) | |
2999 | if (new_sizes[i] > 0) | |
3000 | { | |
3001 | ++nonzero_sizes; | |
3002 | nonzero_idx = i; | |
3003 | } | |
c49a0495 | 3004 | |
6b61353c | 3005 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3006 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3007 | { |
3008 | --new_sizes[i]; | |
3009 | ++total_removed; | |
3010 | ||
3011 | /* Out of for, just shrink one window at the time and | |
3012 | check again if we have enough space. */ | |
3013 | break; | |
3014 | } | |
ef614e04 | 3015 | |
ef614e04 JD |
3016 | /* Special case, only one window left. */ |
3017 | if (nonzero_sizes == 1) | |
3018 | break; | |
3019 | } | |
3020 | ||
3021 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3022 | while (total_shrink < total_removed) | |
3023 | { | |
3024 | for (i = 0; i < nchildren; ++i) | |
3025 | { | |
3026 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3027 | { | |
3028 | ++new_sizes[i]; | |
3029 | --total_removed; | |
3030 | break; | |
3031 | } | |
3032 | } | |
6b61353c KH |
3033 | } |
3034 | ||
047aaeb9 MR |
3035 | xfree (min_sizes); |
3036 | ||
6b61353c KH |
3037 | return new_sizes; |
3038 | } | |
949cf20f | 3039 | |
233a4a2c | 3040 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3041 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3042 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3043 | |
3044 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3045 | they are in series. If LAST_ONLY is 1, change only the last of | |
3046 | WINDOW's children when they are in series. | |
3047 | ||
3048 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3049 | windows that become too small unless NODELETE_P is 1. When |
3050 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3051 | window-min-width when resizing windows but use safe defaults instead. | |
3052 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3053 | |
3054 | static void | |
5fe0b054 | 3055 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 3056 | Lisp_Object window; |
233a4a2c | 3057 | int size, width_p, nodelete_p; |
5fe0b054 | 3058 | int first_only, last_only; |
7ab12479 | 3059 | { |
233a4a2c GM |
3060 | struct window *w = XWINDOW (window); |
3061 | struct window *c; | |
3062 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3063 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3064 | |
7ae2f10f | 3065 | size = max (0, size); |
177c0ea7 | 3066 | |
047aaeb9 MR |
3067 | /* Delete WINDOW if it's too small. */ |
3068 | if (nodelete_p != 1 && !NILP (w->parent) | |
3069 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3070 | { |
047aaeb9 MR |
3071 | delete_window (window); |
3072 | return; | |
7ab12479 JB |
3073 | } |
3074 | ||
233a4a2c | 3075 | /* Set redisplay hints. */ |
7ae2f10f GM |
3076 | w->last_modified = make_number (0); |
3077 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3078 | windows_or_buffers_changed++; |
7ae2f10f | 3079 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3080 | |
233a4a2c GM |
3081 | if (width_p) |
3082 | { | |
3083 | sideward = &w->vchild; | |
3084 | forward = &w->hchild; | |
949cf20f KS |
3085 | w->total_cols = make_number (size); |
3086 | adjust_window_margins (w); | |
233a4a2c GM |
3087 | } |
3088 | else | |
3089 | { | |
3090 | sideward = &w->hchild; | |
3091 | forward = &w->vchild; | |
949cf20f KS |
3092 | w->total_lines = make_number (size); |
3093 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3094 | } |
3095 | ||
3096 | if (!NILP (*sideward)) | |
7ab12479 | 3097 | { |
5fe0b054 | 3098 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3099 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3100 | { |
233a4a2c GM |
3101 | c = XWINDOW (child); |
3102 | if (width_p) | |
949cf20f | 3103 | c->left_col = w->left_col; |
233a4a2c | 3104 | else |
949cf20f | 3105 | c->top_line = w->top_line; |
5fe0b054 RS |
3106 | size_window (child, size, width_p, nodelete_p, |
3107 | first_only, last_only); | |
7ab12479 JB |
3108 | } |
3109 | } | |
5fe0b054 RS |
3110 | else if (!NILP (*forward) && last_only) |
3111 | { | |
3112 | /* Change the last in a series of siblings. */ | |
3113 | Lisp_Object last_child; | |
3114 | int child_size; | |
3115 | ||
3116 | for (child = *forward; !NILP (child); child = c->next) | |
3117 | { | |
3118 | c = XWINDOW (child); | |
3119 | last_child = child; | |
3120 | } | |
3121 | ||
047aaeb9 MR |
3122 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3123 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3124 | width_p, nodelete_p, first_only, last_only); |
3125 | } | |
3126 | else if (!NILP (*forward) && first_only) | |
3127 | { | |
3128 | /* Change the first in a series of siblings. */ | |
3129 | int child_size; | |
3130 | ||
3131 | child = *forward; | |
3132 | c = XWINDOW (child); | |
3133 | ||
3134 | if (width_p) | |
3135 | c->left_col = w->left_col; | |
3136 | else | |
3137 | c->top_line = w->top_line; | |
3138 | ||
047aaeb9 MR |
3139 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3140 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3141 | width_p, nodelete_p, first_only, last_only); |
3142 | } | |
233a4a2c | 3143 | else if (!NILP (*forward)) |
7ab12479 | 3144 | { |
233a4a2c GM |
3145 | int fixed_size, each, extra, n; |
3146 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3147 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3148 | int *new_sizes = NULL; |
233a4a2c | 3149 | |
5fe0b054 | 3150 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3151 | number of child windows. */ |
8b6d9dc9 | 3152 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3153 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3154 | { |
8b6d9dc9 | 3155 | int child_size; |
177c0ea7 | 3156 | |
7ab12479 | 3157 | c = XWINDOW (child); |
047aaeb9 | 3158 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3159 | total += child_size; |
177c0ea7 | 3160 | |
233a4a2c GM |
3161 | if (window_fixed_size_p (c, width_p, 0)) |
3162 | { | |
8b6d9dc9 | 3163 | fixed_size += child_size; |
233a4a2c GM |
3164 | ++nfixed; |
3165 | } | |
3166 | } | |
7ab12479 | 3167 | |
233a4a2c GM |
3168 | /* If the new size is smaller than fixed_size, or if there |
3169 | aren't any resizable windows, allow resizing fixed-size | |
3170 | windows. */ | |
3171 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3172 | ||
6b61353c | 3173 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3174 | value of extra takes care of rounding errors. */ |
3175 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3176 | if (size < total && n > 1) |
047aaeb9 MR |
3177 | new_sizes = shrink_windows (total, size, nchildren, n, |
3178 | resize_fixed_p, *forward, width_p, | |
3179 | nodelete_p == 2); | |
6b61353c KH |
3180 | else |
3181 | { | |
3182 | each = (size - total) / n; | |
3183 | extra = (size - total) - n * each; | |
3184 | } | |
233a4a2c GM |
3185 | |
3186 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3187 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3188 | last_pos = first_pos; |
6b61353c | 3189 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3190 | { |
3191 | int new_size, old_size; | |
177c0ea7 | 3192 | |
233a4a2c | 3193 | c = XWINDOW (child); |
047aaeb9 | 3194 | old_size = WINDOW_TOTAL_SIZE (c, width_p); |
233a4a2c | 3195 | new_size = old_size; |
7ab12479 | 3196 | |
233a4a2c GM |
3197 | /* The top or left edge position of this child equals the |
3198 | bottom or right edge of its predecessor. */ | |
3199 | if (width_p) | |
949cf20f | 3200 | c->left_col = make_number (last_pos); |
233a4a2c | 3201 | else |
949cf20f | 3202 | c->top_line = make_number (last_pos); |
7ab12479 | 3203 | |
233a4a2c GM |
3204 | /* If this child can be resized, do it. */ |
3205 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3206 | { | |
6b61353c | 3207 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3208 | extra = 0; |
3209 | } | |
177c0ea7 | 3210 | |
047aaeb9 | 3211 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3212 | edge positions to children, so it's not a no-op if we |
3213 | didn't change the child's size. */ | |
5fe0b054 | 3214 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3215 | |
3216 | /* Remember the bottom/right edge position of this child; it | |
3217 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3218 | last_pos += new_size; |
7ab12479 | 3219 | } |
233a4a2c | 3220 | |
70fdbb46 | 3221 | xfree (new_sizes); |
6b61353c | 3222 | |
233a4a2c GM |
3223 | /* We should have covered the parent exactly with child windows. */ |
3224 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3225 | |
7ab12479 | 3226 | /* Now delete any children that became too small. */ |
047aaeb9 | 3227 | if (nodelete_p != 1) |
233a4a2c | 3228 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3229 | { |
233a4a2c | 3230 | int child_size; |
047aaeb9 | 3231 | |
233a4a2c | 3232 | c = XWINDOW (child); |
047aaeb9 MR |
3233 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3234 | size_window (child, child_size, width_p, nodelete_p, | |
3235 | first_only, last_only); | |
7ab12479 JB |
3236 | } |
3237 | } | |
3238 | } | |
3239 | ||
233a4a2c | 3240 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3241 | WINDOW's children. NODELETE zero means windows that have become |
3242 | smaller than window-min-height in the process may be deleted. | |
3243 | NODELETE 1 means never delete windows that become too small in the | |
3244 | process. (The caller should check later and do so if appropriate.) | |
3245 | NODELETE 2 means delete only windows that have become too small to be | |
3246 | displayed correctly. */ | |
7ab12479 | 3247 | |
5e14b1fc | 3248 | void |
233a4a2c | 3249 | set_window_height (window, height, nodelete) |
7ab12479 | 3250 | Lisp_Object window; |
233a4a2c | 3251 | int height; |
7ab12479 JB |
3252 | int nodelete; |
3253 | { | |
5fe0b054 | 3254 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3255 | } |
7ab12479 | 3256 | |
233a4a2c | 3257 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3258 | WINDOW's children. NODELETE zero means windows that have become |
3259 | smaller than window-min-width in the process may be deleted. | |
3260 | NODELETE 1 means never delete windows that become too small in the | |
3261 | process. (The caller should check later and do so if appropriate.) | |
3262 | NODELETE 2 means delete only windows that have become too small to be | |
3263 | displayed correctly. */ | |
7ab12479 | 3264 | |
233a4a2c GM |
3265 | void |
3266 | set_window_width (window, width, nodelete) | |
3267 | Lisp_Object window; | |
3268 | int width; | |
3269 | int nodelete; | |
3270 | { | |
5fe0b054 | 3271 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3272 | } |
233a4a2c | 3273 | |
cdbc7fec KS |
3274 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3275 | ||
3276 | void | |
3277 | change_window_heights (window, n) | |
3278 | Lisp_Object window; | |
3279 | int n; | |
3280 | { | |
3281 | struct window *w = XWINDOW (window); | |
3282 | ||
949cf20f KS |
3283 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3284 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3285 | |
949cf20f KS |
3286 | if (INTEGERP (w->orig_top_line)) |
3287 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3288 | if (INTEGERP (w->orig_total_lines)) | |
3289 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3290 | |
3291 | /* Handle just the top child in a vertical split. */ | |
3292 | if (!NILP (w->vchild)) | |
3293 | change_window_heights (w->vchild, n); | |
3294 | ||
3295 | /* Adjust all children in a horizontal split. */ | |
3296 | for (window = w->hchild; !NILP (window); window = w->next) | |
3297 | { | |
3298 | w = XWINDOW (window); | |
3299 | change_window_heights (window, n); | |
3300 | } | |
3301 | } | |
3302 | ||
7ab12479 | 3303 | \f |
1d8d96fa | 3304 | int window_select_count; |
7ab12479 | 3305 | |
56613f06 SM |
3306 | EXFUN (Fset_window_fringes, 4); |
3307 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3308 | |
6a44ffb3 SM |
3309 | static void |
3310 | run_funs (Lisp_Object funs) | |
3311 | { | |
3312 | for (; CONSP (funs); funs = XCDR (funs)) | |
3313 | if (!EQ (XCAR (funs), Qt)) | |
3314 | call0 (XCAR (funs)); | |
3315 | } | |
3316 | ||
3317 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
3318 | ||
ef264c42 SM |
3319 | void |
3320 | run_window_configuration_change_hook (struct frame *f) | |
3321 | { | |
ef264c42 | 3322 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3323 | Lisp_Object frame, global_wcch |
3324 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3325 | XSETFRAME (frame, f); | |
3326 | ||
3327 | if (NILP (Vrun_hooks)) | |
3328 | return; | |
3329 | ||
ef264c42 SM |
3330 | if (SELECTED_FRAME () != f) |
3331 | { | |
ef264c42 SM |
3332 | record_unwind_protect (Fselect_frame, Fselected_frame ()); |
3333 | Fselect_frame (frame); | |
3334 | } | |
6a44ffb3 SM |
3335 | |
3336 | /* Use the right buffer. Matters when running the local hooks. */ | |
3337 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3338 | { | |
3339 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3340 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3341 | } | |
3342 | ||
3343 | /* Look for buffer-local values. */ | |
3344 | { | |
3345 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3346 | for (; CONSP (windows); windows = XCDR (windows)) | |
3347 | { | |
3348 | Lisp_Object window = XCAR (windows); | |
3349 | Lisp_Object buffer = Fwindow_buffer (window); | |
3350 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3351 | buffer))) | |
3352 | { | |
3353 | int count = SPECPDL_INDEX (); | |
3354 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3355 | select_window_norecord (window); | |
3356 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3357 | buffer)); | |
ef264c42 SM |
3358 | unbind_to (count, Qnil); |
3359 | } | |
6a44ffb3 SM |
3360 | } |
3361 | } | |
047aaeb9 | 3362 | |
6a44ffb3 SM |
3363 | run_funs (global_wcch); |
3364 | unbind_to (count, Qnil); | |
ef264c42 SM |
3365 | } |
3366 | ||
5500c422 GM |
3367 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3368 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3369 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3370 | margins, fringes, and scroll-bar settings of the window are not | |
3371 | reset from the buffer's local settings. */ | |
7ab12479 | 3372 | |
5500c422 | 3373 | void |
949cf20f | 3374 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3375 | Lisp_Object window, buffer; |
949cf20f | 3376 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3377 | { |
3378 | struct window *w = XWINDOW (window); | |
3379 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3380 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3381 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3382 | |
3383 | w->buffer = buffer; | |
86e48436 RS |
3384 | |
3385 | if (EQ (window, selected_window)) | |
5500c422 | 3386 | b->last_selected_window = window; |
beb4e312 | 3387 | |
c49a0495 KS |
3388 | /* Let redisplay errors through. */ |
3389 | b->display_error_modiff = 0; | |
3390 | ||
beb4e312 | 3391 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3392 | if (INTEGERP (b->display_count)) |
3393 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3394 | b->display_time = Fcurrent_time (); | |
86e48436 | 3395 | |
d834a2e9 | 3396 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3397 | XSETFASTINT (w->window_end_vpos, 0); |
3398 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3399 | w->window_end_valid = Qnil; |
c3b232e4 SM |
3400 | if (!(keep_margins_p && samebuf)) |
3401 | { /* If we're not actually changing the buffer, Don't reset hscroll and | |
3402 | vscroll. This case happens for example when called from | |
3403 | change_frame_size_1, where we use a dummy call to | |
3404 | Fset_window_buffer on the frame's selected window (and no other) | |
3405 | just in order to run window-configuration-change-hook. | |
3406 | Resetting hscroll and vscroll here is problematic for things like | |
3407 | image-mode and doc-view-mode since it resets the image's position | |
3408 | whenever we resize the frame. */ | |
3409 | w->hscroll = w->min_hscroll = make_number (0); | |
3410 | w->vscroll = 0; | |
3411 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3412 | set_marker_restricted (w->start, | |
3413 | make_number (b->last_window_start), | |
3414 | buffer); | |
3415 | w->start_at_line_beg = Qnil; | |
3416 | w->force_start = Qnil; | |
3417 | XSETFASTINT (w->last_modified, 0); | |
3418 | XSETFASTINT (w->last_overlay_modified, 0); | |
3419 | } | |
3420 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3421 | I doubt it's worth the trouble. */ | |
7ab12479 | 3422 | windows_or_buffers_changed++; |
5b03d3c0 | 3423 | |
da39107c | 3424 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3425 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3426 | because that might itself be a local variable. */ | |
da39107c | 3427 | if (window_initialized) |
5b03d3c0 | 3428 | { |
da39107c | 3429 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3430 | Fset_buffer (buffer); |
3431 | } | |
3432 | ||
a1562258 SM |
3433 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3434 | ||
949cf20f KS |
3435 | if (!keep_margins_p) |
3436 | { | |
3437 | /* Set left and right marginal area width etc. from buffer. */ | |
3438 | ||
79fd290e | 3439 | /* This may call adjust_window_margins three times, so |
949cf20f | 3440 | temporarily disable window margins. */ |
6b61353c KH |
3441 | Lisp_Object save_left = w->left_margin_cols; |
3442 | Lisp_Object save_right = w->right_margin_cols; | |
3443 | ||
949cf20f KS |
3444 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3445 | ||
3446 | Fset_window_fringes (window, | |
3447 | b->left_fringe_width, b->right_fringe_width, | |
3448 | b->fringes_outside_margins); | |
3449 | ||
3450 | Fset_window_scroll_bars (window, | |
3451 | b->scroll_bar_width, | |
3452 | b->vertical_scroll_bar_type, Qnil); | |
3453 | ||
6b61353c KH |
3454 | w->left_margin_cols = save_left; |
3455 | w->right_margin_cols = save_right; | |
3456 | ||
949cf20f KS |
3457 | Fset_window_margins (window, |
3458 | b->left_margin_cols, b->right_margin_cols); | |
3459 | } | |
7ab12479 | 3460 | |
5500c422 GM |
3461 | if (run_hooks_p) |
3462 | { | |
3463 | if (! NILP (Vwindow_scroll_functions)) | |
3464 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3465 | Fmarker_position (w->start)); | |
ef264c42 | 3466 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3467 | } |
543f5fb1 | 3468 | |
5b03d3c0 | 3469 | unbind_to (count, Qnil); |
5500c422 | 3470 | } |
5b03d3c0 | 3471 | |
5500c422 | 3472 | |
949cf20f | 3473 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3474 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3475 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3476 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3477 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3478 | scroll bar settings are preserved; the default is to reset these from | |
3479 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil | |
3480 | ||
3481 | This function throws an error when WINDOW is dedicated to its buffer and | |
3482 | does not already display BUFFER-OR-NAME. | |
6cb4a892 RS |
3483 | |
3484 | This function runs the hook `window-scroll-functions'. */) | |
d653c8cc MR |
3485 | (window, buffer_or_name, keep_margins) |
3486 | register Lisp_Object window, buffer_or_name, keep_margins; | |
5500c422 | 3487 | { |
d653c8cc | 3488 | register Lisp_Object tem, buffer; |
5500c422 | 3489 | register struct window *w = decode_window (window); |
5500c422 | 3490 | |
bed0c171 | 3491 | XSETWINDOW (window, w); |
d653c8cc | 3492 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3493 | CHECK_BUFFER (buffer); |
5500c422 GM |
3494 | if (NILP (XBUFFER (buffer)->name)) |
3495 | error ("Attempt to display deleted buffer"); | |
3496 | ||
3497 | tem = w->buffer; | |
aac0c6e3 MR |
3498 | if (NILP (tem)) |
3499 | error ("Window is deleted"); | |
3500 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3501 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3502 | { |
d653c8cc MR |
3503 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3504 | error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem)->name)); | |
5500c422 GM |
3505 | |
3506 | unshow_buffer (w); | |
3507 | } | |
3508 | ||
949cf20f | 3509 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3510 | return Qnil; |
3511 | } | |
3512 | ||
d653c8cc MR |
3513 | /* Note that selected_window can be nil when this is called from |
3514 | Fset_window_configuration. */ | |
2d0834cc | 3515 | |
14d87dc9 | 3516 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3517 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3518 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3519 | and make WINDOW the frame's selected window. Return WINDOW. |
4e822bdc MR |
3520 | Optional second arg NORECORD non-nil means do not put this buffer |
3521 | at the front of the list of recently selected ones. | |
282f7831 | 3522 | |
4e822bdc MR |
3523 | Note that the main editor command loop selects the buffer of the |
3524 | selected window before each command. */) | |
14d87dc9 SM |
3525 | (window, norecord) |
3526 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3527 | { |
3528 | register struct window *w; | |
719eaeb1 | 3529 | register struct window *ow; |
1ae1a37d | 3530 | struct frame *sf; |
7ab12479 | 3531 | |
b7826503 | 3532 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3533 | |
3534 | w = XWINDOW (window); | |
50e88778 | 3535 | w->frozen_window_start_p = 0; |
7ab12479 | 3536 | |
4e822bdc MR |
3537 | if (NILP (norecord)) |
3538 | { | |
3539 | ++window_select_count; | |
3540 | XSETFASTINT (w->use_time, window_select_count); | |
3541 | } | |
3542 | ||
7ab12479 JB |
3543 | if (EQ (window, selected_window)) |
3544 | return window; | |
3545 | ||
ca2d5566 SM |
3546 | sf = SELECTED_FRAME (); |
3547 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3548 | { | |
3549 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3550 | /* Use this rather than Fhandle_switch_frame | |
3551 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3552 | move around in the state where a minibuffer in a separate | |
3553 | frame is active. */ | |
3554 | Fselect_frame (WINDOW_FRAME (w)); | |
3555 | /* Fselect_frame called us back so we've done all the work already. */ | |
3556 | eassert (EQ (window, selected_window)); | |
3557 | return window; | |
3558 | } | |
3559 | else | |
3560 | sf->selected_window = window; | |
3561 | ||
a46c0153 RS |
3562 | /* Store the current buffer's actual point into the |
3563 | old selected window. It belongs to that window, | |
3564 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3565 | if (!NILP (selected_window)) |
3566 | { | |
3567 | ow = XWINDOW (selected_window); | |
3568 | if (! NILP (ow->buffer)) | |
3569 | set_marker_both (ow->pointm, ow->buffer, | |
3570 | BUF_PT (XBUFFER (ow->buffer)), | |
3571 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3572 | } | |
7ab12479 JB |
3573 | |
3574 | selected_window = window; | |
7ab12479 | 3575 | |
14d87dc9 | 3576 | if (NILP (norecord)) |
b7354ddf | 3577 | record_buffer (w->buffer); |
7ab12479 JB |
3578 | Fset_buffer (w->buffer); |
3579 | ||
86e48436 RS |
3580 | XBUFFER (w->buffer)->last_selected_window = window; |
3581 | ||
7ab12479 JB |
3582 | /* Go to the point recorded in the window. |
3583 | This is important when the buffer is in more | |
3584 | than one window. It also matters when | |
3585 | redisplay_window has altered point after scrolling, | |
3586 | because it makes the change only in the window. */ | |
3587 | { | |
3588 | register int new_point = marker_position (w->pointm); | |
3589 | if (new_point < BEGV) | |
3590 | SET_PT (BEGV); | |
a9c95e08 | 3591 | else if (new_point > ZV) |
7ab12479 JB |
3592 | SET_PT (ZV); |
3593 | else | |
3594 | SET_PT (new_point); | |
3595 | } | |
3596 | ||
3597 | windows_or_buffers_changed++; | |
3598 | return window; | |
3599 | } | |
14d87dc9 SM |
3600 | |
3601 | static Lisp_Object | |
3602 | select_window_norecord (window) | |
3603 | Lisp_Object window; | |
3604 | { | |
3605 | return Fselect_window (window, Qt); | |
3606 | } | |
b7354ddf | 3607 | \f |
87478b52 SM |
3608 | Lisp_Object |
3609 | display_buffer (buffer, not_this_window_p, override_frame) | |
3610 | Lisp_Object buffer, not_this_window_p, override_frame; | |
d07f802a | 3611 | { |
87478b52 | 3612 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3613 | } |
3614 | ||
6b61353c KH |
3615 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3616 | 0, 1, 0, | |
5a1048a5 | 3617 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3618 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3619 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c KH |
3620 | displaying that buffer. */) |
3621 | (object) | |
3622 | Lisp_Object object; | |
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); | |
3644 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
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 JB |
3660 | void |
3661 | temp_output_buffer_show (buf) | |
3662 | register Lisp_Object buf; | |
3663 | { | |
3664 | register struct buffer *old = current_buffer; | |
3665 | register Lisp_Object window; | |
3666 | register struct window *w; | |
3667 | ||
bccd3dd1 RS |
3668 | XBUFFER (buf)->directory = current_buffer->directory; |
3669 | ||
7ab12479 | 3670 | Fset_buffer (buf); |
c6367666 | 3671 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3672 | BEGV = BEG; |
3673 | ZV = Z; | |
3674 | SET_PT (BEG); | |
06be4f85 | 3675 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3676 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3677 | #endif |
7ab12479 JB |
3678 | set_buffer_internal (old); |
3679 | ||
e67a1dea | 3680 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3681 | call1 (Vtemp_buffer_show_function, buf); |
3682 | else | |
3683 | { | |
87478b52 | 3684 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3685 | |
1ae1a37d | 3686 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3687 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3688 | Vminibuf_scroll_window = window; |
3689 | w = XWINDOW (window); | |
d834a2e9 | 3690 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3691 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3692 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3693 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3694 | |
beb4e312 | 3695 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3696 | and its buffer current. */ |
2d0834cc SM |
3697 | |
3698 | if (!NILP (Vrun_hooks) | |
3699 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3700 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3701 | { |
2d0834cc SM |
3702 | int count = SPECPDL_INDEX (); |
3703 | Lisp_Object prev_window, prev_buffer; | |
3704 | prev_window = selected_window; | |
3705 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3706 | |
2d0834cc SM |
3707 | /* Select the window that was chosen, for running the hook. |
3708 | Note: Both Fselect_window and select_window_norecord may | |
3709 | set-buffer to the buffer displayed in the window, | |
3710 | so we need to save the current buffer. --stef */ | |
3711 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3712 | record_unwind_protect (select_window_norecord, prev_window); | |
3713 | Fselect_window (window, Qt); | |
3714 | Fset_buffer (w->buffer); | |
3715 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3716 | unbind_to (count, Qnil); | |
2cccc823 RS |
3717 | } |
3718 | } | |
7ab12479 JB |
3719 | } |
3720 | \f | |
dfcf069d | 3721 | static void |
7ab12479 JB |
3722 | make_dummy_parent (window) |
3723 | Lisp_Object window; | |
3724 | { | |
cffec418 | 3725 | Lisp_Object new; |
7ab12479 | 3726 | register struct window *o, *p; |
cffec418 | 3727 | int i; |
7ab12479 | 3728 | |
cffec418 | 3729 | o = XWINDOW (window); |
26605be9 | 3730 | p = allocate_window (); |
cffec418 | 3731 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3732 | ((struct Lisp_Vector *) p)->contents[i] |
3733 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3734 | XSETWINDOW (new, p); |
7ab12479 | 3735 | |
2a1893f4 SM |
3736 | ++sequence_number; |
3737 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3738 | |
3739 | /* Put new into window structure in place of window */ | |
3740 | replace_window (window, new); | |
3741 | ||
3742 | o->next = Qnil; | |
3743 | o->prev = Qnil; | |
3744 | o->vchild = Qnil; | |
3745 | o->hchild = Qnil; | |
3746 | o->parent = new; | |
3747 | ||
3748 | p->start = Qnil; | |
3749 | p->pointm = Qnil; | |
3750 | p->buffer = Qnil; | |
3751 | } | |
3752 | ||
3753 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3754 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3755 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
3756 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
3757 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
3758 | window's scroll bar, or the divider column to its right. | |
c2755926 | 3759 | Interactively, all arguments are nil. |
c2755926 | 3760 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
3761 | The upper or leftmost window is the original one, and remains selected |
3762 | if it was selected before. | |
3763 | ||
87527026 MR |
3764 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
3765 | (window, size, horizontal) | |
3766 | Lisp_Object window, size, 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)", |
949cf20f | 3811 | 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)", |
949cf20f | 3828 | 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 GM |
3855 | p->window_end_valid = Qnil; |
3856 | bzero (&p->last_cursor, 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. */) | |
3905 | (size, horizontal) | |
3906 | Lisp_Object size, horizontal; | |
7ab12479 | 3907 | { |
aac0c6e3 MR |
3908 | CHECK_NUMBER (size); |
3909 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3910 | |
eeca6f6f | 3911 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3912 | |
7ab12479 JB |
3913 | return Qnil; |
3914 | } | |
3915 | ||
56ebfae2 | 3916 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
3917 | doc: /* Make selected window SIZE lines smaller. |
3918 | Interactively, if no argument is given, make the selected window one | |
3919 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
3920 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
3921 | window by -SIZE lines or columns. Return nil. | |
3922 | ||
3923 | This function can delete windows if they get too small. The size of | |
3924 | fixed size windows is not altered by this function. */) | |
3925 | (size, horizontal) | |
3926 | Lisp_Object size, horizontal; | |
3927 | { | |
3928 | CHECK_NUMBER (size); | |
3929 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3930 | |
eeca6f6f | 3931 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3932 | |
7ab12479 JB |
3933 | return Qnil; |
3934 | } | |
3935 | ||
3936 | int | |
3937 | window_height (window) | |
3938 | Lisp_Object window; | |
3939 | { | |
3940 | register struct window *p = XWINDOW (window); | |
949cf20f | 3941 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3942 | } |
3943 | ||
3944 | int | |
3945 | window_width (window) | |
3946 | Lisp_Object window; | |
3947 | { | |
3948 | register struct window *p = XWINDOW (window); | |
949cf20f | 3949 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3950 | } |
3951 | ||
177c0ea7 | 3952 | |
7ab12479 | 3953 | #define CURBEG(w) \ |
5afc696a | 3954 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3955 | |
3956 | #define CURSIZE(w) \ | |
5afc696a | 3957 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 3958 | |
233a4a2c | 3959 | |
047aaeb9 MR |
3960 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
3961 | horizontally; zero means do it vertically. | |
f95284d2 | 3962 | |
5afc696a | 3963 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 3964 | request. If they become too small in the process, they may be |
56ebfae2 | 3965 | deleted. */ |
7ab12479 | 3966 | |
f984d4fc | 3967 | static void |
56ebfae2 | 3968 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 3969 | Lisp_Object window; |
56ebfae2 | 3970 | int delta, horiz_flag; |
7ab12479 | 3971 | { |
86c8e823 | 3972 | Lisp_Object parent, next, prev; |
233a4a2c | 3973 | struct window *p; |
3578db3c KR |
3974 | Lisp_Object *sizep; |
3975 | int maximum; | |
5e14b1fc | 3976 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 3977 | = horiz_flag ? window_width : window_height; |
233a4a2c | 3978 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 3979 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 3980 | |
233a4a2c | 3981 | /* Give up if this window cannot be resized. */ |
5afc696a | 3982 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
3983 | error ("Window is not resizable"); |
3984 | ||
3985 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
3986 | while (1) |
3987 | { | |
3988 | p = XWINDOW (window); | |
3989 | parent = p->parent; | |
177c0ea7 | 3990 | |
265a9e55 | 3991 | if (NILP (parent)) |
7ab12479 | 3992 | { |
5afc696a | 3993 | if (horiz_flag) |
7ab12479 JB |
3994 | error ("No other window to side of this one"); |
3995 | break; | |
3996 | } | |
177c0ea7 | 3997 | |
5afc696a | 3998 | if (horiz_flag |
233a4a2c | 3999 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4000 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4001 | break; |
177c0ea7 | 4002 | |
7ab12479 JB |
4003 | window = parent; |
4004 | } | |
4005 | ||
05c2896a | 4006 | sizep = &CURSIZE (window); |
7ab12479 | 4007 | |
7ab12479 JB |
4008 | { |
4009 | register int maxdelta; | |
7ab12479 | 4010 | |
f95284d2 RS |
4011 | /* Compute the maximum size increment this window can have. */ |
4012 | ||
56ebfae2 RS |
4013 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4014 | /* This is a main window followed by a minibuffer. */ | |
4015 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4016 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4017 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4018 | /* This is a minibuffer following a main window. */ |
4019 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4020 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4021 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4022 | /* This is a frame with only one window, a minibuffer-only |
4023 | or a minibufferless frame. */ | |
4024 | : (delta = 0)); | |
7ab12479 JB |
4025 | |
4026 | if (delta > maxdelta) | |
4027 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4028 | the full frame, or make the only window aside from the |
4029 | minibuffer the full frame. */ | |
7ab12479 | 4030 | delta = maxdelta; |
6b54027b | 4031 | } |
d5783c40 | 4032 | |
047aaeb9 MR |
4033 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4034 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4035 | { |
543f5fb1 | 4036 | delete_window (window); |
d5783c40 | 4037 | return; |
6b54027b RS |
4038 | } |
4039 | ||
4040 | if (delta == 0) | |
4041 | return; | |
7ab12479 | 4042 | |
f95284d2 | 4043 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4044 | maximum = 0; |
9beb8baa | 4045 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4046 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4047 | horiz_flag, 0, 0, 0); |
9beb8baa | 4048 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4049 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4050 | horiz_flag, 0, 0, 0); |
db98a733 | 4051 | |
f95284d2 | 4052 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4053 | if (delta <= maximum) |
7ab12479 | 4054 | { |
db98a733 RS |
4055 | Lisp_Object first_unaffected; |
4056 | Lisp_Object first_affected; | |
233a4a2c | 4057 | int fixed_p; |
db98a733 RS |
4058 | |
4059 | next = p->next; | |
4060 | prev = p->prev; | |
4061 | first_affected = window; | |
4062 | /* Look at one sibling at a time, | |
4063 | moving away from this window in both directions alternately, | |
4064 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4065 | while (delta != 0 |
56ebfae2 | 4066 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4067 | { |
db98a733 RS |
4068 | if (! NILP (next)) |
4069 | { | |
c1636aa6 | 4070 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4071 | - window_min_size (XWINDOW (next), horiz_flag, |
4072 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4073 | if (!fixed_p) |
4074 | { | |
4075 | if (this_one > delta) | |
4076 | this_one = delta; | |
177c0ea7 | 4077 | |
233a4a2c | 4078 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4079 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4080 | |
233a4a2c GM |
4081 | delta -= this_one; |
4082 | } | |
177c0ea7 | 4083 | |
db98a733 RS |
4084 | next = XWINDOW (next)->next; |
4085 | } | |
177c0ea7 | 4086 | |
db98a733 RS |
4087 | if (delta == 0) |
4088 | break; | |
177c0ea7 | 4089 | |
56ebfae2 | 4090 | if (! NILP (prev)) |
db98a733 | 4091 | { |
c1636aa6 | 4092 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4093 | - window_min_size (XWINDOW (prev), horiz_flag, |
4094 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4095 | if (!fixed_p) |
4096 | { | |
4097 | if (this_one > delta) | |
4098 | this_one = delta; | |
177c0ea7 | 4099 | |
233a4a2c | 4100 | first_affected = prev; |
177c0ea7 | 4101 | |
233a4a2c | 4102 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4103 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4104 | |
4105 | delta -= this_one; | |
4106 | } | |
177c0ea7 | 4107 | |
db98a733 RS |
4108 | prev = XWINDOW (prev)->prev; |
4109 | } | |
4110 | } | |
4111 | ||
233a4a2c GM |
4112 | xassert (delta == 0); |
4113 | ||
db98a733 RS |
4114 | /* Now recalculate the edge positions of all the windows affected, |
4115 | based on the new sizes. */ | |
4116 | first_unaffected = next; | |
4117 | prev = first_affected; | |
4118 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4119 | prev = next, next = XWINDOW (next)->next) | |
4120 | { | |
3578db3c | 4121 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4122 | /* This does not change size of NEXT, |
4123 | but it propagates the new top edge to its children */ | |
4124 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4125 | } | |
7ab12479 JB |
4126 | } |
4127 | else | |
4128 | { | |
4129 | register int delta1; | |
4130 | register int opht = (*sizefun) (parent); | |
4131 | ||
3578db3c | 4132 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4133 | { |
4134 | /* If trying to grow this window to or beyond size of the parent, | |
4135 | just delete all the sibling windows. */ | |
dc1ab1ee | 4136 | Lisp_Object start, tem, next; |
daf516d3 | 4137 | |
dc1ab1ee RS |
4138 | start = XWINDOW (parent)->vchild; |
4139 | if (NILP (start)) | |
4140 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4141 | |
dc1ab1ee RS |
4142 | /* Delete any siblings that come after WINDOW. */ |
4143 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4144 | while (! NILP (tem)) |
4145 | { | |
4146 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4147 | delete_window (tem); |
4148 | tem = next; | |
4149 | } | |
4150 | ||
4151 | /* Delete any siblings that come after WINDOW. | |
4152 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4153 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4154 | tem = start; |
4155 | while (! EQ (tem, window)) | |
4156 | { | |
4157 | next = XWINDOW (tem)->next; | |
4158 | delete_window (tem); | |
daf516d3 RS |
4159 | tem = next; |
4160 | } | |
4161 | } | |
7ab12479 | 4162 | else |
233a4a2c GM |
4163 | { |
4164 | /* Otherwise, make delta1 just right so that if we add | |
4165 | delta1 lines to this window and to the parent, and then | |
4166 | shrink the parent back to its original size, the new | |
4167 | proportional size of this window will increase by delta. | |
4168 | ||
4169 | The function size_window will compute the new height h' | |
4170 | of the window from delta1 as: | |
177c0ea7 | 4171 | |
233a4a2c GM |
4172 | e = delta1/n |
4173 | x = delta1 - delta1/n * n for the 1st resizable child | |
4174 | h' = h + e + x | |
4175 | ||
4176 | where n is the number of children that can be resized. | |
4177 | We can ignore x by choosing a delta1 that is a multiple of | |
4178 | n. We want the height of this window to come out as | |
177c0ea7 | 4179 | |
233a4a2c GM |
4180 | h' = h + delta |
4181 | ||
4182 | So, delta1 must be | |
177c0ea7 | 4183 | |
233a4a2c GM |
4184 | h + e = h + delta |
4185 | delta1/n = delta | |
4186 | delta1 = n * delta. | |
4187 | ||
a5731348 | 4188 | The number of children n equals the number of resizable |
233a4a2c | 4189 | children of this window + 1 because we know window itself |
04bf5b65 | 4190 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4191 | |
4192 | This reasoning is not correct when other windows become too | |
4193 | small and shrink_windows refuses to delete them. Below we | |
4194 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4195 | |
4196 | struct window *w = XWINDOW (window); | |
4197 | Lisp_Object s; | |
4198 | int n = 1; | |
4199 | ||
9beb8baa | 4200 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4201 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4202 | ++n; |
9beb8baa | 4203 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4204 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4205 | ++n; |
4206 | ||
4207 | delta1 = n * delta; | |
7ab12479 | 4208 | |
daf516d3 RS |
4209 | /* Add delta1 lines or columns to this window, and to the parent, |
4210 | keeping things consistent while not affecting siblings. */ | |
4211 | XSETINT (CURSIZE (parent), opht + delta1); | |
4212 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4213 | ||
4214 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4215 | shrinking this window and siblings proportionately. This |
4216 | brings parent back to correct size. Delta1 was calculated | |
4217 | so this makes this window the desired size, taking it all | |
4218 | out of the siblings. | |
4219 | ||
4220 | Temporarily set resize_proportionally to Qt to assure that, | |
4221 | if necessary, shrink_windows deletes smaller windows rather | |
4222 | than shrink this window. */ | |
4223 | w->resize_proportionally = Qt; | |
daf516d3 | 4224 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4225 | w->resize_proportionally = Qnil; |
daf516d3 | 4226 | } |
7ab12479 JB |
4227 | } |
4228 | ||
d834a2e9 | 4229 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4230 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4231 | |
4232 | /* Adjust glyph matrices. */ | |
4233 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4234 | } |
c1636aa6 | 4235 | |
0d384044 RS |
4236 | |
4237 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4238 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4239 | zero means adjust the height, moving the bottom edge. | |
4240 | ||
4241 | Following siblings of the selected window are resized to fulfill | |
4242 | the size request. If they become too small in the process, they | |
4243 | are not deleted; instead, we signal an error. */ | |
4244 | ||
4245 | static void | |
4246 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4247 | Lisp_Object window; | |
4248 | int delta, horiz_flag; | |
4249 | { | |
4250 | Lisp_Object parent, child; | |
4251 | struct window *p; | |
4252 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4253 | int delcount = window_deletion_count; | |
4254 | ||
0d384044 RS |
4255 | CHECK_WINDOW (window); |
4256 | ||
4257 | /* Give up if this window cannot be resized. */ | |
4258 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4259 | error ("Window is not resizable"); | |
4260 | ||
4261 | while (1) | |
4262 | { | |
bd99e242 RS |
4263 | Lisp_Object first_parallel = Qnil; |
4264 | ||
c32de52a | 4265 | if (NILP (window)) |
0d384044 | 4266 | { |
5fe0b054 RS |
4267 | /* This happens if WINDOW on the previous iteration was |
4268 | at top level of the window tree. */ | |
0d384044 | 4269 | Fset_window_configuration (old_config); |
c32de52a | 4270 | error ("Specified window edge is fixed"); |
0d384044 RS |
4271 | } |
4272 | ||
c32de52a RS |
4273 | p = XWINDOW (window); |
4274 | parent = p->parent; | |
4275 | ||
bd99e242 RS |
4276 | /* See if this level has windows in parallel in the specified |
4277 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4278 | if (horiz_flag) | |
4279 | { | |
4280 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4281 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4282 | else if (NILP (parent) && !NILP (p->next)) |
4283 | { | |
4284 | /* Handle the vertical chain of main window and minibuffer | |
4285 | which has no parent. */ | |
4286 | first_parallel = window; | |
4287 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4288 | first_parallel = XWINDOW (first_parallel)->prev; | |
4289 | } | |
bd99e242 RS |
4290 | } |
4291 | else | |
4292 | { | |
4293 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4294 | first_parallel = XWINDOW (parent)->hchild; | |
4295 | } | |
4296 | ||
c32de52a | 4297 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4298 | and this window is the last one, and there is no higher level, |
4299 | its trailing edge is fixed. */ | |
4300 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4301 | && NILP (parent)) | |
c32de52a RS |
4302 | { |
4303 | Fset_window_configuration (old_config); | |
4304 | error ("Specified window edge is fixed"); | |
4305 | } | |
4306 | ||
0d384044 RS |
4307 | /* Don't make this window too small. */ |
4308 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4309 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4310 | { |
4311 | Fset_window_configuration (old_config); | |
4312 | error ("Cannot adjust window size as specified"); | |
4313 | } | |
4314 | ||
4315 | /* Clear out some redisplay caches. */ | |
4316 | XSETFASTINT (p->last_modified, 0); | |
4317 | XSETFASTINT (p->last_overlay_modified, 0); | |
4318 | ||
4319 | /* Adjust this window's edge. */ | |
4320 | XSETINT (CURSIZE (window), | |
4321 | XINT (CURSIZE (window)) + delta); | |
4322 | ||
4323 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4324 | make them smaller, and exit the loop. |
4325 | ||
0d384044 RS |
4326 | (If we reach the top of the tree and can never do this, |
4327 | we will fail and report an error, above.) */ | |
bd99e242 | 4328 | if (NILP (first_parallel)) |
0d384044 | 4329 | { |
c32de52a | 4330 | if (!NILP (p->next)) |
0d384044 | 4331 | { |
e99c7521 JD |
4332 | /* This may happen for the minibuffer. In that case |
4333 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4334 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4335 | { |
4336 | Fset_window_configuration (old_config); | |
4337 | error ("Cannot adjust window size as specified"); | |
4338 | } | |
4339 | ||
0d384044 RS |
4340 | XSETINT (CURBEG (p->next), |
4341 | XINT (CURBEG (p->next)) + delta); | |
4342 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4343 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4344 | break; |
4345 | } | |
4346 | } | |
4347 | else | |
4348 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4349 | Change the size of the other siblings. */ | |
bd99e242 | 4350 | for (child = first_parallel; |
0d384044 RS |
4351 | ! NILP (child); |
4352 | child = XWINDOW (child)->next) | |
4353 | if (! EQ (child, window)) | |
4354 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4355 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4356 | |
4357 | window = parent; | |
4358 | } | |
4359 | ||
4360 | /* If we made a window so small it got deleted, | |
4361 | we failed. Report failure. */ | |
4362 | if (delcount != window_deletion_count) | |
4363 | { | |
4364 | Fset_window_configuration (old_config); | |
4365 | error ("Cannot adjust window size as specified"); | |
4366 | } | |
4367 | ||
4368 | /* Adjust glyph matrices. */ | |
4369 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4370 | } | |
4371 | ||
7ab12479 JB |
4372 | #undef CURBEG |
4373 | #undef CURSIZE | |
4374 | ||
0d384044 RS |
4375 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4376 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4377 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4378 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4379 | Otherwise, adjust the height, moving the bottom edge. |
4380 | ||
4381 | Following siblings of the selected window are resized to fulfill | |
4382 | the size request. If they become too small in the process, they | |
4383 | are not deleted; instead, we signal an error. */) | |
4384 | (window, delta, horizontal) | |
4385 | Lisp_Object window, delta, horizontal; | |
4386 | { | |
4387 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4388 | if (NILP (window)) |
4389 | window = selected_window; | |
0d384044 RS |
4390 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4391 | ||
eeca6f6f SM |
4392 | run_window_configuration_change_hook |
4393 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4394 | |
4395 | return Qnil; | |
4396 | } | |
4397 | ||
5500c422 | 4398 | |
f984d4fc GM |
4399 | \f |
4400 | /*********************************************************************** | |
4401 | Resizing Mini-Windows | |
4402 | ***********************************************************************/ | |
4403 | ||
4404 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4405 | |
43b4a21f GM |
4406 | enum save_restore_action |
4407 | { | |
4408 | CHECK_ORIG_SIZES, | |
4409 | SAVE_ORIG_SIZES, | |
4410 | RESTORE_ORIG_SIZES | |
4411 | }; | |
4412 | ||
177c0ea7 | 4413 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4414 | enum save_restore_action)); |
f984d4fc GM |
4415 | |
4416 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4417 | from lowest windows first. */ | |
4418 | ||
4419 | static void | |
4420 | shrink_window_lowest_first (w, height) | |
4421 | struct window *w; | |
4422 | int height; | |
4423 | { | |
4424 | struct window *c; | |
4425 | Lisp_Object child; | |
4426 | int old_height; | |
4427 | ||
4428 | xassert (!MINI_WINDOW_P (w)); | |
4429 | ||
4430 | /* Set redisplay hints. */ | |
4431 | XSETFASTINT (w->last_modified, 0); | |
4432 | XSETFASTINT (w->last_overlay_modified, 0); | |
4433 | windows_or_buffers_changed++; | |
4434 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4435 | ||
949cf20f KS |
4436 | old_height = XFASTINT (w->total_lines); |
4437 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4438 | |
4439 | if (!NILP (w->hchild)) | |
4440 | { | |
4441 | for (child = w->hchild; !NILP (child); child = c->next) | |
4442 | { | |
4443 | c = XWINDOW (child); | |
949cf20f | 4444 | c->top_line = w->top_line; |
f984d4fc GM |
4445 | shrink_window_lowest_first (c, height); |
4446 | } | |
4447 | } | |
4448 | else if (!NILP (w->vchild)) | |
4449 | { | |
4450 | Lisp_Object last_child; | |
4451 | int delta = old_height - height; | |
4452 | int last_top; | |
6bbd7a29 GM |
4453 | |
4454 | last_child = Qnil; | |
177c0ea7 | 4455 | |
f984d4fc GM |
4456 | /* Find the last child. We are taking space from lowest windows |
4457 | first, so we iterate over children from the last child | |
4458 | backwards. */ | |
9beb8baa | 4459 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4460 | last_child = child; |
4461 | ||
047aaeb9 | 4462 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4463 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4464 | { | |
4465 | int this_one; | |
177c0ea7 | 4466 | |
f984d4fc | 4467 | c = XWINDOW (child); |
047aaeb9 | 4468 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4469 | |
4470 | if (this_one > delta) | |
4471 | this_one = delta; | |
4472 | ||
949cf20f | 4473 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4474 | delta -= this_one; |
4475 | } | |
4476 | ||
4477 | /* Compute new positions. */ | |
949cf20f | 4478 | last_top = XINT (w->top_line); |
f984d4fc GM |
4479 | for (child = w->vchild; !NILP (child); child = c->next) |
4480 | { | |
4481 | c = XWINDOW (child); | |
949cf20f KS |
4482 | c->top_line = make_number (last_top); |
4483 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4484 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4485 | } |
4486 | } | |
4487 | } | |
4488 | ||
4489 | ||
43b4a21f GM |
4490 | /* Save, restore, or check positions and sizes in the window tree |
4491 | rooted at W. ACTION says what to do. | |
f984d4fc | 4492 | |
949cf20f KS |
4493 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4494 | orig_total_lines members are valid for all windows in the window | |
4495 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4496 | |
43b4a21f | 4497 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4498 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4499 | |
949cf20f KS |
4500 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4501 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4502 | |
4503 | static int | |
4504 | save_restore_orig_size (w, action) | |
f984d4fc | 4505 | struct window *w; |
43b4a21f | 4506 | enum save_restore_action action; |
f984d4fc | 4507 | { |
43b4a21f GM |
4508 | int success_p = 1; |
4509 | ||
f984d4fc GM |
4510 | while (w) |
4511 | { | |
4512 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4513 | { |
4514 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4515 | success_p = 0; | |
4516 | } | |
f984d4fc | 4517 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4518 | { |
4519 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4520 | success_p = 0; | |
4521 | } | |
177c0ea7 | 4522 | |
43b4a21f | 4523 | switch (action) |
f984d4fc | 4524 | { |
43b4a21f | 4525 | case CHECK_ORIG_SIZES: |
949cf20f | 4526 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4527 | return 0; |
4528 | break; | |
4529 | ||
4530 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4531 | w->orig_top_line = w->top_line; |
4532 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4533 | XSETFASTINT (w->last_modified, 0); |
4534 | XSETFASTINT (w->last_overlay_modified, 0); | |
4535 | break; | |
4536 | ||
4537 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4538 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4539 | w->top_line = w->orig_top_line; | |
4540 | w->total_lines = w->orig_total_lines; | |
4541 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4542 | XSETFASTINT (w->last_modified, 0); |
4543 | XSETFASTINT (w->last_overlay_modified, 0); | |
4544 | break; | |
4545 | ||
4546 | default: | |
4547 | abort (); | |
f984d4fc | 4548 | } |
43b4a21f | 4549 | |
f984d4fc GM |
4550 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4551 | } | |
43b4a21f GM |
4552 | |
4553 | return success_p; | |
f984d4fc GM |
4554 | } |
4555 | ||
4556 | ||
4557 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4558 | without deleting other windows. */ | |
4559 | ||
4560 | void | |
4561 | grow_mini_window (w, delta) | |
4562 | struct window *w; | |
4563 | int delta; | |
4564 | { | |
4565 | struct frame *f = XFRAME (w->frame); | |
4566 | struct window *root; | |
177c0ea7 | 4567 | |
f984d4fc GM |
4568 | xassert (MINI_WINDOW_P (w)); |
4569 | xassert (delta >= 0); | |
177c0ea7 | 4570 | |
f984d4fc GM |
4571 | /* Compute how much we can enlarge the mini-window without deleting |
4572 | other windows. */ | |
4573 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4574 | if (delta) | |
4575 | { | |
047aaeb9 | 4576 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4577 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4578 | /* Note that the root window may already be smaller than |
eafa3196 | 4579 | min_height. */ |
949cf20f | 4580 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4581 | } |
177c0ea7 | 4582 | |
f984d4fc GM |
4583 | if (delta) |
4584 | { | |
4585 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4586 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4587 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4588 | |
4589 | /* Shrink other windows. */ | |
949cf20f | 4590 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4591 | |
4592 | /* Grow the mini-window. */ | |
949cf20f KS |
4593 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4594 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4595 | XSETFASTINT (w->last_modified, 0); |
4596 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4597 | |
f984d4fc GM |
4598 | adjust_glyphs (f); |
4599 | } | |
4600 | } | |
4601 | ||
4602 | ||
86c8e823 GM |
4603 | /* Shrink mini-window W. If there is recorded info about window sizes |
4604 | before a call to grow_mini_window, restore recorded window sizes. | |
4605 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4606 | line. */ | |
f984d4fc GM |
4607 | |
4608 | void | |
4609 | shrink_mini_window (w) | |
4610 | struct window *w; | |
4611 | { | |
4612 | struct frame *f = XFRAME (w->frame); | |
4613 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4614 | ||
43b4a21f | 4615 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4616 | { |
43b4a21f | 4617 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4618 | adjust_glyphs (f); |
4619 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4620 | windows_or_buffers_changed = 1; | |
4621 | } | |
949cf20f | 4622 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4623 | { |
0130fe1a GM |
4624 | /* Distribute the additional lines of the mini-window |
4625 | among the other windows. */ | |
86c8e823 GM |
4626 | Lisp_Object window; |
4627 | XSETWINDOW (window, w); | |
56ebfae2 | 4628 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4629 | } |
f984d4fc GM |
4630 | } |
4631 | ||
4632 | ||
4633 | \f | |
5500c422 GM |
4634 | /* Mark window cursors off for all windows in the window tree rooted |
4635 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4636 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4637 | the frame are cleared. */ | |
4638 | ||
4639 | void | |
4640 | mark_window_cursors_off (w) | |
4641 | struct window *w; | |
4642 | { | |
4643 | while (w) | |
4644 | { | |
4645 | if (!NILP (w->hchild)) | |
4646 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4647 | else if (!NILP (w->vchild)) | |
4648 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4649 | else | |
4650 | w->phys_cursor_on_p = 0; | |
4651 | ||
4652 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4653 | } | |
4654 | } | |
4655 | ||
4656 | ||
e9c195b1 | 4657 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4658 | |
4659 | int | |
4660 | window_internal_height (w) | |
4661 | struct window *w; | |
4662 | { | |
949cf20f | 4663 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4664 | |
e9c195b1 GM |
4665 | if (!MINI_WINDOW_P (w)) |
4666 | { | |
4667 | if (!NILP (w->parent) | |
4668 | || !NILP (w->vchild) | |
4669 | || !NILP (w->hchild) | |
4670 | || !NILP (w->next) | |
4671 | || !NILP (w->prev) | |
4672 | || WINDOW_WANTS_MODELINE_P (w)) | |
4673 | --ht; | |
7ab12479 | 4674 | |
e9c195b1 GM |
4675 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4676 | --ht; | |
4677 | } | |
7ab12479 JB |
4678 | |
4679 | return ht; | |
4680 | } | |
4681 | ||
535e0b8e JB |
4682 | |
4683 | /* Return the number of columns in W. | |
a3c87d4e | 4684 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4685 | separating W from the sibling to its right. */ |
5500c422 | 4686 | |
535e0b8e | 4687 | int |
949cf20f | 4688 | window_box_text_cols (w) |
535e0b8e JB |
4689 | struct window *w; |
4690 | { | |
5500c422 | 4691 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4692 | int width = XINT (w->total_cols); |
535e0b8e | 4693 | |
949cf20f | 4694 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4695 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4696 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4697 | else if (!FRAME_WINDOW_P (f) | |
4698 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4699 | /* The column of `|' characters separating side-by-side windows |
4700 | occupies one column only. */ | |
4701 | width -= 1; | |
4702 | ||
5500c422 | 4703 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4704 | /* On window-systems, fringes and display margins cannot be |
4705 | used for normal text. */ | |
4706 | width -= (WINDOW_FRINGE_COLS (w) | |
4707 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4708 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4709 | |
4710 | return width; | |
535e0b8e JB |
4711 | } |
4712 | ||
5500c422 GM |
4713 | \f |
4714 | /************************************************************************ | |
4715 | Window Scrolling | |
4716 | ***********************************************************************/ | |
535e0b8e | 4717 | |
5500c422 | 4718 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4719 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4720 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4721 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4722 | means don't signal an error if we try to move over BEGV or ZV, | |
4723 | respectively. */ | |
7ab12479 | 4724 | |
101d1605 RS |
4725 | static void |
4726 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4727 | Lisp_Object window; |
4728 | int n; | |
101d1605 | 4729 | int whole; |
f8026fd8 | 4730 | int noerror; |
5500c422 | 4731 | { |
cba59f77 RS |
4732 | immediate_quit = 1; |
4733 | ||
5500c422 GM |
4734 | /* If we must, use the pixel-based version which is much slower than |
4735 | the line-based one but can handle varying line heights. */ | |
4736 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4737 | window_scroll_pixel_based (window, n, whole, noerror); | |
4738 | else | |
4739 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4740 | |
4741 | immediate_quit = 0; | |
5500c422 GM |
4742 | } |
4743 | ||
4744 | ||
4745 | /* Implementation of window_scroll that works based on pixel line | |
4746 | heights. See the comment of window_scroll for parameter | |
4747 | descriptions. */ | |
4748 | ||
4749 | static void | |
4750 | window_scroll_pixel_based (window, n, whole, noerror) | |
4751 | Lisp_Object window; | |
4752 | int n; | |
4753 | int whole; | |
4754 | int noerror; | |
4755 | { | |
4756 | struct it it; | |
4757 | struct window *w = XWINDOW (window); | |
4758 | struct text_pos start; | |
5500c422 | 4759 | int this_scroll_margin; |
9d14503e | 4760 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4761 | int vscrolled = 0; |
5a857365 | 4762 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4763 | |
4764 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4765 | |
5500c422 | 4766 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4767 | the screen. Allow PT to be partially visible, otherwise |
4768 | something like (scroll-down 1) with PT in the line before | |
4769 | the partially visible one would recenter. */ | |
5a857365 KS |
4770 | |
4771 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4772 | { |
4773 | /* Move backward half the height of the window. Performance note: | |
4774 | vmotion used here is about 10% faster, but would give wrong | |
4775 | results for variable height lines. */ | |
4776 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4777 | it.current_y = it.last_visible_y; | |
f204989e | 4778 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4779 | |
5500c422 GM |
4780 | /* The function move_iterator_vertically may move over more than |
4781 | the specified y-distance. If it->w is small, e.g. a | |
4782 | mini-buffer window, we may end up in front of the window's | |
4783 | display area. This is the case when Start displaying at the | |
4784 | start of the line containing PT in this case. */ | |
4785 | if (it.current_y <= 0) | |
4786 | { | |
4787 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4788 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4789 | it.current_y = 0; |
4790 | } | |
4791 | ||
4792 | start = it.current.pos; | |
4793 | } | |
e56263e5 KS |
4794 | else if (auto_window_vscroll_p) |
4795 | { | |
5a857365 | 4796 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4797 | { |
4798 | int px; | |
4799 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4800 | if (whole) | |
e856c216 KS |
4801 | dy = max ((window_box_height (w) |
4802 | - next_screen_context_lines * dy), | |
4803 | dy); | |
e56263e5 KS |
4804 | dy *= n; |
4805 | ||
5a857365 | 4806 | if (n < 0) |
e56263e5 | 4807 | { |
5a857365 KS |
4808 | /* Only vscroll backwards if already vscrolled forwards. */ |
4809 | if (w->vscroll < 0 && rtop > 0) | |
4810 | { | |
4811 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4812 | Fset_window_vscroll (window, make_number (px), Qt); | |
4813 | return; | |
4814 | } | |
e56263e5 | 4815 | } |
5a857365 | 4816 | if (n > 0) |
e56263e5 | 4817 | { |
5a857365 KS |
4818 | /* Do vscroll if already vscrolled or only display line. */ |
4819 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4820 | { | |
4821 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4822 | Fset_window_vscroll (window, make_number (px), Qt); | |
4823 | return; | |
4824 | } | |
4825 | ||
4826 | /* Maybe modify window start instead of scrolling. */ | |
4827 | if (rbot > 0 || w->vscroll < 0) | |
4828 | { | |
4829 | int spos; | |
4830 | ||
4831 | Fset_window_vscroll (window, make_number (0), Qt); | |
4832 | /* If there are other text lines above the current row, | |
4833 | move window start to current row. Else to next row. */ | |
4834 | if (rbot > 0) | |
4835 | spos = XINT (Fline_beginning_position (Qnil)); | |
4836 | else | |
4837 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4838 | set_marker_restricted (w->start, make_number (spos), | |
4839 | w->buffer); | |
4840 | w->start_at_line_beg = Qt; | |
4841 | w->update_mode_line = Qt; | |
4842 | XSETFASTINT (w->last_modified, 0); | |
4843 | XSETFASTINT (w->last_overlay_modified, 0); | |
4844 | /* Set force_start so that redisplay_window will run the | |
4845 | window-scroll-functions. */ | |
4846 | w->force_start = Qt; | |
4847 | return; | |
4848 | } | |
e56263e5 KS |
4849 | } |
4850 | } | |
5a857365 | 4851 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4852 | Fset_window_vscroll (window, make_number (0), Qt); |
4853 | } | |
5500c422 | 4854 | |
d0c38d63 | 4855 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4856 | point in the same window line as it is now, so get that line. */ |
4857 | if (!NILP (Vscroll_preserve_screen_position)) | |
4858 | { | |
c525d842 CY |
4859 | /* We preserve the goal pixel coordinate across consecutive |
4860 | calls to scroll-up or scroll-down. This avoids the | |
4861 | possibility of point becoming "stuck" on a tall line when | |
4862 | scrolling by one line. */ | |
66fe93d1 | 4863 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
4864 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
4865 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
4866 | { |
4867 | start_display (&it, w, start); | |
4868 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4869 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4870 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4871 | } |
5500c422 GM |
4872 | } |
4873 | else | |
c876b227 SM |
4874 | window_scroll_pixel_based_preserve_y |
4875 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4876 | |
4877 | /* Move iterator it from start the specified distance forward or | |
4878 | backward. The result is the new window start. */ | |
4879 | start_display (&it, w, start); | |
4880 | if (whole) | |
4881 | { | |
e856c216 KS |
4882 | int start_pos = IT_CHARPOS (it); |
4883 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4884 | dy = max ((window_box_height (w) | |
4885 | - next_screen_context_lines * dy), | |
4886 | dy) * n; | |
d72340d4 GM |
4887 | |
4888 | /* Note that move_it_vertically always moves the iterator to the | |
4889 | start of a line. So, if the last line doesn't have a newline, | |
4890 | we would end up at the start of the line ending at ZV. */ | |
4891 | if (dy <= 0) | |
e856c216 KS |
4892 | { |
4893 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4894 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4895 | looking at an image that is taller that the window height. */ |
4896 | while (start_pos == IT_CHARPOS (it) | |
4897 | && start_pos > BEGV) | |
4898 | move_it_by_lines (&it, -1, 1); | |
4899 | } | |
d72340d4 | 4900 | else if (dy > 0) |
bed83ee4 | 4901 | { |
bed83ee4 KS |
4902 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4903 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4904 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4905 | looking at an image that is taller that the window height. */ |
4906 | while (start_pos == IT_CHARPOS (it) | |
4907 | && start_pos < ZV) | |
4908 | move_it_by_lines (&it, 1, 1); | |
4909 | } | |
5500c422 GM |
4910 | } |
4911 | else | |
4912 | move_it_by_lines (&it, n, 1); | |
4913 | ||
96ae58c8 RS |
4914 | /* We failed if we find ZV is already on the screen (scrolling up, |
4915 | means there's nothing past the end), or if we can't start any | |
4916 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4917 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4918 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4919 | { |
5cdb3cf3 MB |
4920 | if (IT_CHARPOS (it) == ZV) |
4921 | { | |
07ce8b53 RS |
4922 | if (it.current_y < it.last_visible_y |
4923 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4924 | > it.last_visible_y)) |
a74eca50 GM |
4925 | { |
4926 | /* The last line was only partially visible, make it fully | |
4927 | visible. */ | |
4928 | w->vscroll = (it.last_visible_y | |
4929 | - it.current_y + it.max_ascent + it.max_descent); | |
4930 | adjust_glyphs (it.f); | |
4931 | } | |
5cdb3cf3 MB |
4932 | else if (noerror) |
4933 | return; | |
cf402f3f | 4934 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 4935 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 4936 | else |
ba96a5cf | 4937 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 4938 | } |
5500c422 | 4939 | else |
5cdb3cf3 MB |
4940 | { |
4941 | if (w->vscroll != 0) | |
4942 | /* The first line was only partially visible, make it fully | |
4943 | visible. */ | |
4944 | w->vscroll = 0; | |
4945 | else if (noerror) | |
4946 | return; | |
4947 | else | |
ba96a5cf | 4948 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
4949 | } |
4950 | ||
4951 | /* If control gets here, then we vscrolled. */ | |
4952 | ||
4953 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4954 | ||
4955 | /* Don't try to change the window start below. */ | |
4956 | vscrolled = 1; | |
5500c422 GM |
4957 | } |
4958 | ||
5cdb3cf3 MB |
4959 | if (! vscrolled) |
4960 | { | |
dad67609 RS |
4961 | int pos = IT_CHARPOS (it); |
4962 | int bytepos; | |
e68def1e AS |
4963 | |
4964 | /* If in the middle of a multi-glyph character move forward to | |
4965 | the next character. */ | |
4966 | if (in_display_vector_p (&it)) | |
4967 | { | |
4968 | ++pos; | |
4969 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4970 | } | |
4971 | ||
5cdb3cf3 | 4972 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4973 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4974 | w->buffer); |
dad67609 RS |
4975 | bytepos = XMARKER (w->start)->bytepos; |
4976 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4977 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4978 | w->update_mode_line = Qt; |
4979 | XSETFASTINT (w->last_modified, 0); | |
4980 | XSETFASTINT (w->last_overlay_modified, 0); | |
4981 | /* Set force_start so that redisplay_window will run the | |
4982 | window-scroll-functions. */ | |
4983 | w->force_start = Qt; | |
4984 | } | |
177c0ea7 | 4985 | |
dc297565 RS |
4986 | /* The rest of this function uses current_y in a nonstandard way, |
4987 | not including the height of the header line if any. */ | |
5500c422 | 4988 | it.current_y = it.vpos = 0; |
177c0ea7 | 4989 | |
940f53e5 RS |
4990 | /* Move PT out of scroll margins. |
4991 | This code wants current_y to be zero at the window start position | |
4992 | even if there is a header line. */ | |
4993 | this_scroll_margin = max (0, scroll_margin); | |
4994 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4995 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4996 | ||
4997 | if (n > 0) | |
5500c422 | 4998 | { |
940f53e5 RS |
4999 | /* We moved the window start towards ZV, so PT may be now |
5000 | in the scroll margin at the top. */ | |
5001 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5002 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5003 | && (NILP (Vscroll_preserve_screen_position) | |
5004 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5005 | /* We found PT at a legitimate height. Leave it alone. */ |
5006 | ; | |
66fe93d1 | 5007 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5008 | { |
fa3c3426 RS |
5009 | /* If we have a header line, take account of it. |
5010 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5011 | move_it_to (&it, -1, |
5012 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5013 | window_scroll_pixel_based_preserve_y |
5014 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5015 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5016 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5017 | } | |
5018 | else | |
5500c422 | 5019 | { |
5500c422 | 5020 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5021 | { |
5022 | int prev = it.current_y; | |
5023 | move_it_by_lines (&it, 1, 1); | |
5024 | if (prev == it.current_y) | |
5025 | break; | |
5026 | } | |
5500c422 GM |
5027 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5028 | } | |
940f53e5 RS |
5029 | } |
5030 | else if (n < 0) | |
5031 | { | |
5032 | int charpos, bytepos; | |
aed328bf | 5033 | int partial_p; |
940f53e5 | 5034 | |
66fe93d1 LT |
5035 | /* Save our position, for the |
5036 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5037 | charpos = IT_CHARPOS (it); |
5038 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5039 | |
940f53e5 RS |
5040 | /* We moved the window start towards BEGV, so PT may be now |
5041 | in the scroll margin at the bottom. */ | |
5042 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5043 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5044 | - this_scroll_margin - 1), | |
5045 | -1, | |
940f53e5 RS |
5046 | MOVE_TO_POS | MOVE_TO_Y); |
5047 | ||
aed328bf KS |
5048 | /* Save our position, in case it's correct. */ |
5049 | charpos = IT_CHARPOS (it); | |
5050 | bytepos = IT_BYTEPOS (it); | |
5051 | ||
5052 | /* See if point is on a partially visible line at the end. */ | |
5053 | if (it.what == IT_EOB) | |
5054 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5055 | else | |
5056 | { | |
5057 | move_it_by_lines (&it, 1, 1); | |
5058 | partial_p = it.current_y > it.last_visible_y; | |
5059 | } | |
5060 | ||
bdf4ec93 RS |
5061 | if (charpos == PT && !partial_p |
5062 | && (NILP (Vscroll_preserve_screen_position) | |
5063 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5064 | /* We found PT before we found the display margin, so PT is ok. */ |
5065 | ; | |
66fe93d1 | 5066 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5067 | { |
5068 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5069 | start_display (&it, w, start); | |
c525d842 CY |
5070 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5071 | here because we called start_display again and did not | |
5072 | alter it.current_y this time. */ | |
c876b227 SM |
5073 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5074 | window_scroll_pixel_based_preserve_y, -1, | |
5075 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5076 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5077 | } | |
5078 | else | |
5079 | { | |
aed328bf | 5080 | if (partial_p) |
5cdb3cf3 MB |
5081 | /* The last line was only partially visible, so back up two |
5082 | lines to make sure we're on a fully visible line. */ | |
5083 | { | |
5084 | move_it_by_lines (&it, -2, 0); | |
5085 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5086 | } | |
5087 | else | |
5088 | /* No, the position we saved is OK, so use it. */ | |
5089 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5090 | } |
5091 | } | |
5092 | } | |
5093 | ||
5094 | ||
5095 | /* Implementation of window_scroll that works based on screen lines. | |
5096 | See the comment of window_scroll for parameter descriptions. */ | |
5097 | ||
5098 | static void | |
5099 | window_scroll_line_based (window, n, whole, noerror) | |
5100 | Lisp_Object window; | |
5101 | int n; | |
5102 | int whole; | |
5103 | int noerror; | |
7ab12479 JB |
5104 | { |
5105 | register struct window *w = XWINDOW (window); | |
5500c422 | 5106 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5107 | register int pos, pos_byte; |
7ab12479 JB |
5108 | register int ht = window_internal_height (w); |
5109 | register Lisp_Object tem; | |
5110 | int lose; | |
5500c422 | 5111 | Lisp_Object bolp; |
345d45b2 | 5112 | int startpos; |
c876b227 | 5113 | Lisp_Object original_pos = Qnil; |
101d1605 | 5114 | |
d4e7cf01 GM |
5115 | /* If scrolling screen-fulls, compute the number of lines to |
5116 | scroll from the window's height. */ | |
5117 | if (whole) | |
5118 | n *= max (1, ht - next_screen_context_lines); | |
5119 | ||
101d1605 RS |
5120 | startpos = marker_position (w->start); |
5121 | ||
c876b227 SM |
5122 | if (!NILP (Vscroll_preserve_screen_position)) |
5123 | { | |
5124 | if (window_scroll_preserve_vpos <= 0 | |
5125 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) | |
5126 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
5127 | { | |
5128 | struct position posit | |
5129 | = *compute_motion (startpos, 0, 0, 0, | |
5130 | PT, ht, 0, | |
5131 | -1, XINT (w->hscroll), | |
5132 | 0, w); | |
5133 | window_scroll_preserve_vpos = posit.vpos; | |
5134 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5135 | } | |
5136 | ||
5137 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5138 | make_number (window_scroll_preserve_vpos)); | |
5139 | } | |
0a1f771a | 5140 | |
d834a2e9 | 5141 | XSETFASTINT (tem, PT); |
6ffdb539 | 5142 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5143 | |
265a9e55 | 5144 | if (NILP (tem)) |
7ab12479 | 5145 | { |
cd2be1dd | 5146 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5147 | startpos = PT; |
7ab12479 JB |
5148 | } |
5149 | ||
345d45b2 | 5150 | SET_PT (startpos); |
5ce7b543 | 5151 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5152 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5153 | pos = PT; |
b73ea88e | 5154 | pos_byte = PT_BYTE; |
7ab12479 | 5155 | bolp = Fbolp (); |
b73ea88e | 5156 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5157 | |
5158 | if (lose) | |
f8026fd8 JB |
5159 | { |
5160 | if (noerror) | |
5161 | return; | |
5162 | else | |
ba96a5cf | 5163 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5164 | } |
7ab12479 JB |
5165 | |
5166 | if (pos < ZV) | |
7ab12479 | 5167 | { |
0c7da84e RS |
5168 | int this_scroll_margin = scroll_margin; |
5169 | ||
5170 | /* Don't use a scroll margin that is negative or too large. */ | |
5171 | if (this_scroll_margin < 0) | |
5172 | this_scroll_margin = 0; | |
5173 | ||
949cf20f KS |
5174 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5175 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5176 | |
b73ea88e | 5177 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5178 | w->start_at_line_beg = bolp; |
5179 | w->update_mode_line = Qt; | |
d834a2e9 | 5180 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5181 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5182 | /* Set force_start so that redisplay_window will run |
5183 | the window-scroll-functions. */ | |
5184 | w->force_start = Qt; | |
0c7da84e | 5185 | |
bdf4ec93 RS |
5186 | if (!NILP (Vscroll_preserve_screen_position) |
5187 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5188 | { |
b73ea88e | 5189 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5190 | Fvertical_motion (original_pos, window); |
0c7da84e | 5191 | } |
101d1605 RS |
5192 | /* If we scrolled forward, put point enough lines down |
5193 | that it is outside the scroll margin. */ | |
5194 | else if (n > 0) | |
0c7da84e | 5195 | { |
101d1605 RS |
5196 | int top_margin; |
5197 | ||
5198 | if (this_scroll_margin > 0) | |
5199 | { | |
b73ea88e | 5200 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5201 | Fvertical_motion (make_number (this_scroll_margin), window); |
5202 | top_margin = PT; | |
5203 | } | |
5204 | else | |
5205 | top_margin = pos; | |
5206 | ||
5207 | if (top_margin <= opoint) | |
b73ea88e | 5208 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5209 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5210 | { |
b73ea88e | 5211 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5212 | Fvertical_motion (original_pos, window); |
101d1605 | 5213 | } |
9317a85d | 5214 | else |
335406fc | 5215 | SET_PT (top_margin); |
0c7da84e | 5216 | } |
101d1605 | 5217 | else if (n < 0) |
7ab12479 | 5218 | { |
101d1605 RS |
5219 | int bottom_margin; |
5220 | ||
0c7da84e RS |
5221 | /* If we scrolled backward, put point near the end of the window |
5222 | but not within the scroll margin. */ | |
b73ea88e | 5223 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5224 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5225 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5226 | bottom_margin = PT; | |
5227 | else | |
5228 | bottom_margin = PT + 1; | |
5229 | ||
5230 | if (bottom_margin > opoint) | |
b73ea88e | 5231 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5232 | else |
101d1605 | 5233 | { |
5500c422 | 5234 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5235 | { |
b73ea88e | 5236 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5237 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5238 | } |
5239 | else | |
5240 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5241 | } |
7ab12479 JB |
5242 | } |
5243 | } | |
5244 | else | |
f8026fd8 JB |
5245 | { |
5246 | if (noerror) | |
5247 | return; | |
5248 | else | |
ba96a5cf | 5249 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5250 | } |
7ab12479 | 5251 | } |
5500c422 GM |
5252 | |
5253 | ||
5254 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5255 | screen-full which is defined as the height of the window minus | |
5256 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5257 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5258 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5259 | |
5260 | static void | |
5261 | scroll_command (n, direction) | |
5500c422 | 5262 | Lisp_Object n; |
7ab12479 JB |
5263 | int direction; |
5264 | { | |
331379bf | 5265 | int count = SPECPDL_INDEX (); |
7ab12479 | 5266 | |
1ea40aa2 | 5267 | xassert (eabs (direction) == 1); |
5500c422 GM |
5268 | |
5269 | /* If selected window's buffer isn't current, make it current for | |
5270 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5271 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5272 | { |
5273 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5274 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5275 | |
5276 | /* Make redisplay consider other windows than just selected_window. */ | |
5277 | ++windows_or_buffers_changed; | |
95605e15 | 5278 | } |
7ab12479 | 5279 | |
265a9e55 | 5280 | if (NILP (n)) |
d4e7cf01 | 5281 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5282 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5283 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5284 | else |
5285 | { | |
5286 | n = Fprefix_numeric_value (n); | |
101d1605 | 5287 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5288 | } |
95605e15 JB |
5289 | |
5290 | unbind_to (count, Qnil); | |
7ab12479 JB |
5291 | } |
5292 | ||
e0965597 | 5293 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5294 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5295 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5296 | A near full screen is `next-screen-context-lines' less than a full screen. |
5297 | Negative ARG means scroll downward. | |
5298 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5299 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5300 | (arg) | |
413430c5 | 5301 | Lisp_Object arg; |
7ab12479 | 5302 | { |
413430c5 | 5303 | scroll_command (arg, 1); |
7ab12479 JB |
5304 | return Qnil; |
5305 | } | |
5306 | ||
e0965597 | 5307 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5308 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5309 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5310 | A near full screen is `next-screen-context-lines' less than a full screen. |
5311 | Negative ARG means scroll upward. | |
5312 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5313 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5314 | (arg) | |
413430c5 | 5315 | Lisp_Object arg; |
7ab12479 | 5316 | { |
413430c5 | 5317 | scroll_command (arg, -1); |
7ab12479 JB |
5318 | return Qnil; |
5319 | } | |
ccd0664b RS |
5320 | \f |
5321 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5322 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5323 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5324 | showing that buffer is used. |
5325 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5326 | specifies the window. This takes precedence over | |
5327 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5328 | () |
7ab12479 | 5329 | { |
ccd0664b | 5330 | Lisp_Object window; |
7ab12479 JB |
5331 | |
5332 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5333 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5334 | window = Vminibuf_scroll_window; |
5335 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5336 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5337 | { |
5338 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5339 | if (NILP (window)) |
87478b52 | 5340 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5341 | } |
5342 | else | |
dbc4e1c1 JB |
5343 | { |
5344 | /* Nothing specified; look for a neighboring window on the same | |
5345 | frame. */ | |
5346 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5347 | ||
5348 | if (EQ (window, selected_window)) | |
5349 | /* That didn't get us anywhere; look for a window on another | |
5350 | visible frame. */ | |
5351 | do | |
5352 | window = Fnext_window (window, Qnil, Qt); | |
5353 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5354 | && ! EQ (window, selected_window)); | |
5355 | } | |
5356 | ||
b7826503 | 5357 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5358 | |
5359 | if (EQ (window, selected_window)) | |
5360 | error ("There is no other window"); | |
5361 | ||
ccd0664b RS |
5362 | return window; |
5363 | } | |
5364 | ||
5365 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5366 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5367 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5368 | The next window is the one below the current one; or the one at the top | |
5369 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5370 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5371 | When calling from a program, supply as argument a number, nil, or `-'. | |
5372 | ||
fdb82f93 | 5373 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5374 | showing that buffer, popping the buffer up if necessary. |
5375 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5376 | specifies the window to scroll. This takes precedence over | |
5377 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5378 | (arg) |
d4e7cf01 | 5379 | Lisp_Object arg; |
ccd0664b | 5380 | { |
d4e7cf01 GM |
5381 | Lisp_Object window; |
5382 | struct window *w; | |
331379bf | 5383 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5384 | |
5385 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5386 | w = XWINDOW (window); |
7ab12479 JB |
5387 | |
5388 | /* Don't screw up if window_scroll gets an error. */ | |
5389 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5390 | ++windows_or_buffers_changed; |
7ab12479 JB |
5391 | |
5392 | Fset_buffer (w->buffer); | |
5393 | SET_PT (marker_position (w->pointm)); | |
5394 | ||
413430c5 | 5395 | if (NILP (arg)) |
d4e7cf01 | 5396 | window_scroll (window, 1, 1, 1); |
413430c5 | 5397 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5398 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5399 | else |
5400 | { | |
413430c5 EN |
5401 | if (CONSP (arg)) |
5402 | arg = Fcar (arg); | |
b7826503 | 5403 | CHECK_NUMBER (arg); |
101d1605 | 5404 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5405 | } |
5406 | ||
b73ea88e | 5407 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5408 | unbind_to (count, Qnil); |
7ab12479 JB |
5409 | |
5410 | return Qnil; | |
5411 | } | |
5412 | \f | |
e0965597 | 5413 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5414 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5415 | Default for ARG is window width minus 2. |
5416 | Value is the total amount of leftward horizontal scrolling in | |
5417 | effect after the change. | |
dc297565 RS |
5418 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5419 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5420 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5421 | by this function. This happens in an interactive call. */) |
5422 | (arg, set_minimum) | |
5423 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5424 | { |
c67fa410 GM |
5425 | Lisp_Object result; |
5426 | int hscroll; | |
5427 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5428 | |
265a9e55 | 5429 | if (NILP (arg)) |
949cf20f | 5430 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5431 | else |
5432 | arg = Fprefix_numeric_value (arg); | |
5433 | ||
c67fa410 GM |
5434 | hscroll = XINT (w->hscroll) + XINT (arg); |
5435 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5436 | ||
dc297565 | 5437 | if (!NILP (set_minimum)) |
c67fa410 GM |
5438 | w->min_hscroll = w->hscroll; |
5439 | ||
5440 | return result; | |
7ab12479 JB |
5441 | } |
5442 | ||
e0965597 | 5443 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5444 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5445 | Default for ARG is window width minus 2. |
5446 | Value is the total amount of leftward horizontal scrolling in | |
5447 | effect after the change. | |
dc297565 RS |
5448 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5449 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5450 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5451 | by this function. This happens in an interactive call. */) |
5452 | (arg, set_minimum) | |
a93563fd | 5453 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5454 | { |
c67fa410 GM |
5455 | Lisp_Object result; |
5456 | int hscroll; | |
5457 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5458 | |
265a9e55 | 5459 | if (NILP (arg)) |
949cf20f | 5460 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5461 | else |
5462 | arg = Fprefix_numeric_value (arg); | |
5463 | ||
c67fa410 GM |
5464 | hscroll = XINT (w->hscroll) - XINT (arg); |
5465 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5466 | |
dc297565 | 5467 | if (!NILP (set_minimum)) |
c67fa410 GM |
5468 | w->min_hscroll = w->hscroll; |
5469 | ||
5470 | return result; | |
7ab12479 JB |
5471 | } |
5472 | ||
fa832261 KS |
5473 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5474 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5475 | Returns nil, if selected window is not a minibuffer window. */) |
fa832261 KS |
5476 | () |
5477 | { | |
5478 | if (minibuf_level > 0 | |
5479 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5480 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5481 | return minibuf_selected_window; | |
5482 | ||
5483 | return Qnil; | |
5484 | } | |
5485 | ||
12c8b416 GM |
5486 | /* Value is the number of lines actually displayed in window W, |
5487 | as opposed to its height. */ | |
5488 | ||
5489 | static int | |
5490 | displayed_window_lines (w) | |
5491 | struct window *w; | |
5492 | { | |
5493 | struct it it; | |
5494 | struct text_pos start; | |
5495 | int height = window_box_height (w); | |
5496 | struct buffer *old_buffer; | |
5497 | int bottom_y; | |
5498 | ||
5499 | if (XBUFFER (w->buffer) != current_buffer) | |
5500 | { | |
5501 | old_buffer = current_buffer; | |
5502 | set_buffer_internal (XBUFFER (w->buffer)); | |
5503 | } | |
5504 | else | |
5505 | old_buffer = NULL; | |
5506 | ||
521b203e GM |
5507 | /* In case W->start is out of the accessible range, do something |
5508 | reasonable. This happens in Info mode when Info-scroll-down | |
5509 | calls (recenter -1) while W->start is 1. */ | |
5510 | if (XMARKER (w->start)->charpos < BEGV) | |
5511 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5512 | else if (XMARKER (w->start)->charpos > ZV) | |
5513 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5514 | else | |
5515 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5516 | ||
12c8b416 GM |
5517 | start_display (&it, w, start); |
5518 | move_it_vertically (&it, height); | |
c8bc6f65 | 5519 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5520 | |
1de65f51 RS |
5521 | /* rms: On a non-window display, |
5522 | the value of it.vpos at the bottom of the screen | |
5523 | seems to be 1 larger than window_box_height (w). | |
5524 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5525 | when ZV is on the last screen line | |
5526 | moves to the previous screen line instead of the last one. */ | |
5527 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5528 | height++; | |
5529 | ||
12c8b416 GM |
5530 | /* Add in empty lines at the bottom of the window. */ |
5531 | if (bottom_y < height) | |
5532 | { | |
949cf20f | 5533 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5534 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5535 | } |
5536 | ||
c8bc6f65 GM |
5537 | if (old_buffer) |
5538 | set_buffer_internal (old_buffer); | |
5539 | ||
12c8b416 GM |
5540 | return it.vpos; |
5541 | } | |
5542 | ||
5543 | ||
7ab12479 | 5544 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
12bb3111 | 5545 | doc: /* Center point in selected window and redisplay frame. |
fdb82f93 | 5546 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5547 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5548 | bottom of the window. (ARG should be less than the height of the window.) |
5549 | ||
7d1d98ee | 5550 | If ARG is omitted or nil, erase the entire frame and then redraw with point |
12bb3111 | 5551 | in the center of the selected window. If `auto-resize-tool-bars' is set to |
7d1d98ee KS |
5552 | `grow-only', this resets the tool-bar's height to the minimum height needed. |
5553 | ||
fdb82f93 PJ |
5554 | Just C-u as prefix means put point in the center of the window |
5555 | and redisplay normally--don't erase and redraw the frame. */) | |
5556 | (arg) | |
413430c5 | 5557 | register Lisp_Object arg; |
7ab12479 | 5558 | { |
6df47b59 | 5559 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5560 | struct buffer *buf = XBUFFER (w->buffer); |
5561 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5562 | int center_p = 0; |
5563 | int charpos, bytepos; | |
f6b43440 RS |
5564 | int iarg; |
5565 | int this_scroll_margin; | |
7ab12479 | 5566 | |
0fa5d25b RS |
5567 | /* If redisplay is suppressed due to an error, try again. */ |
5568 | obuf->display_error_modiff = 0; | |
5569 | ||
413430c5 | 5570 | if (NILP (arg)) |
7ab12479 | 5571 | { |
f02d6d5c KH |
5572 | int i; |
5573 | ||
5574 | /* Invalidate pixel data calculated for all compositions. */ | |
5575 | for (i = 0; i < n_compositions; i++) | |
5576 | composition_table[i]->font = NULL; | |
7ab12479 | 5577 | |
7d1d98ee KS |
5578 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5579 | ||
5580 | Fredraw_frame (WINDOW_FRAME (w)); | |
5581 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6df47b59 | 5582 | center_p = 1; |
7ab12479 | 5583 | } |
413430c5 | 5584 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5585 | center_p = 1; |
7ab12479 JB |
5586 | else |
5587 | { | |
413430c5 | 5588 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5589 | CHECK_NUMBER (arg); |
ae12ecd7 | 5590 | iarg = XINT (arg); |
7ab12479 JB |
5591 | } |
5592 | ||
478292ed | 5593 | set_buffer_internal (buf); |
7ab12479 | 5594 | |
f6b43440 RS |
5595 | /* Do this after making BUF current |
5596 | in case scroll_margin is buffer-local. */ | |
5597 | this_scroll_margin = max (0, scroll_margin); | |
5598 | this_scroll_margin = min (this_scroll_margin, | |
5599 | XFASTINT (w->total_lines) / 4); | |
5600 | ||
521b203e | 5601 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5602 | have variable-height lines and centering point on the basis of |
5603 | line counts would lead to strange effects. */ | |
521b203e | 5604 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5605 | { |
6df47b59 GM |
5606 | if (center_p) |
5607 | { | |
521b203e GM |
5608 | struct it it; |
5609 | struct text_pos pt; | |
177c0ea7 | 5610 | |
521b203e GM |
5611 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5612 | start_display (&it, w, pt); | |
f204989e | 5613 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5614 | charpos = IT_CHARPOS (it); |
5615 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5616 | } |
f6b43440 | 5617 | else if (iarg < 0) |
6df47b59 | 5618 | { |
521b203e GM |
5619 | struct it it; |
5620 | struct text_pos pt; | |
f6b43440 | 5621 | int nlines = -iarg; |
f204989e KS |
5622 | int extra_line_spacing; |
5623 | int h = window_box_height (w); | |
177c0ea7 | 5624 | |
f6b43440 RS |
5625 | iarg = - max (-iarg, this_scroll_margin); |
5626 | ||
521b203e GM |
5627 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5628 | start_display (&it, w, pt); | |
f204989e KS |
5629 | |
5630 | /* Be sure we have the exact height of the full line containing PT. */ | |
5631 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5632 | |
d466fa4d | 5633 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5634 | height minus what's displayed in the line containing PT, |
5635 | and the lines below. */ | |
f204989e KS |
5636 | it.current_y = 0; |
5637 | it.vpos = 0; | |
d466fa4d GM |
5638 | move_it_by_lines (&it, nlines, 1); |
5639 | ||
f204989e KS |
5640 | if (it.vpos == nlines) |
5641 | h -= it.current_y; | |
5642 | else | |
5643 | { | |
5644 | /* Last line has no newline */ | |
5645 | h -= line_bottom_y (&it); | |
5646 | it.vpos++; | |
5647 | } | |
5648 | ||
5649 | /* Don't reserve space for extra line spacing of last line. */ | |
5650 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5651 | |
5652 | /* If we can't move down NLINES lines because we hit | |
5653 | the end of the buffer, count in some empty lines. */ | |
5654 | if (it.vpos < nlines) | |
f204989e KS |
5655 | { |
5656 | nlines -= it.vpos; | |
5657 | extra_line_spacing = it.extra_line_spacing; | |
5658 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5659 | } | |
5660 | if (h <= 0) | |
5661 | return Qnil; | |
201c831a | 5662 | |
f204989e | 5663 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5664 | start_display (&it, w, pt); |
f204989e KS |
5665 | it.current_y = 0; |
5666 | move_it_vertically_backward (&it, h); | |
5667 | ||
5668 | /* If extra line spacing is present, we may move too far | |
5669 | back. This causes the last line to be only partially | |
5670 | visible (which triggers redisplay to recenter that line | |
5671 | in the middle), so move forward. | |
5672 | But ignore extra line spacing on last line, as it is not | |
5673 | considered to be part of the visible height of the line. | |
5674 | */ | |
5675 | h += extra_line_spacing; | |
5676 | while (-it.current_y > h) | |
5677 | move_it_by_lines (&it, 1, 1); | |
5678 | ||
521b203e GM |
5679 | charpos = IT_CHARPOS (it); |
5680 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5681 | } |
521b203e GM |
5682 | else |
5683 | { | |
5684 | struct position pos; | |
f6b43440 | 5685 | |
f6b43440 RS |
5686 | iarg = max (iarg, this_scroll_margin); |
5687 | ||
5688 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5689 | charpos = pos.bufpos; |
5690 | bytepos = pos.bytepos; | |
5691 | } | |
5692 | } | |
5693 | else | |
5694 | { | |
5695 | struct position pos; | |
5696 | int ht = window_internal_height (w); | |
5697 | ||
5698 | if (center_p) | |
a4429c5b | 5699 | iarg = ht / 2; |
f567c488 KS |
5700 | else if (iarg < 0) |
5701 | iarg += ht; | |
f6b43440 RS |
5702 | |
5703 | /* Don't let it get into the margin at either top or bottom. */ | |
5704 | iarg = max (iarg, this_scroll_margin); | |
5705 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5706 | |
f6b43440 | 5707 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5708 | charpos = pos.bufpos; |
5709 | bytepos = pos.bytepos; | |
5710 | } | |
5711 | ||
5712 | /* Set the new window start. */ | |
5713 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5714 | w->window_end_valid = Qnil; |
177c0ea7 | 5715 | |
95605b1b RS |
5716 | w->optional_new_start = Qt; |
5717 | ||
6df47b59 GM |
5718 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5719 | w->start_at_line_beg = Qt; | |
5720 | else | |
5721 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5722 | |
478292ed | 5723 | set_buffer_internal (obuf); |
7ab12479 JB |
5724 | return Qnil; |
5725 | } | |
b7617575 GM |
5726 | |
5727 | ||
81fe0836 | 5728 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5729 | 0, 1, 0, |
5730 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5731 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
5732 | This doesn't include the mode-line (or header-line if any) or any |
5733 | partial-height lines in the text display area. */) | |
5734 | (window) | |
81fe0836 MB |
5735 | Lisp_Object window; |
5736 | { | |
5737 | struct window *w = decode_window (window); | |
5738 | int pixel_height = window_box_height (w); | |
949cf20f | 5739 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5740 | return make_number (line_height); |
5741 | } | |
5742 | ||
5743 | ||
7ab12479 JB |
5744 | \f |
5745 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5746 | 1, 1, "P", |
5747 | doc: /* Position point relative to window. | |
5748 | With no argument, position point at center of window. | |
5749 | An argument specifies vertical position within the window; | |
5750 | zero means top of window, negative means relative to bottom of window. */) | |
5751 | (arg) | |
b7617575 | 5752 | Lisp_Object arg; |
7ab12479 | 5753 | { |
b7617575 GM |
5754 | struct window *w = XWINDOW (selected_window); |
5755 | int lines, start; | |
540b6aa0 | 5756 | Lisp_Object window; |
f6b43440 RS |
5757 | #if 0 |
5758 | int this_scroll_margin; | |
5759 | #endif | |
7ab12479 | 5760 | |
b7617575 | 5761 | window = selected_window; |
7ab12479 JB |
5762 | start = marker_position (w->start); |
5763 | if (start < BEGV || start > ZV) | |
5764 | { | |
b7617575 | 5765 | int height = window_internal_height (w); |
cd2be1dd | 5766 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5767 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5768 | w->start_at_line_beg = Fbolp (); |
5769 | w->force_start = Qt; | |
5770 | } | |
5771 | else | |
b73ea88e | 5772 | Fgoto_char (w->start); |
7ab12479 | 5773 | |
b7617575 | 5774 | lines = displayed_window_lines (w); |
f6b43440 RS |
5775 | |
5776 | #if 0 | |
5777 | this_scroll_margin = max (0, scroll_margin); | |
5778 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5779 | #endif | |
5780 | ||
b7617575 GM |
5781 | if (NILP (arg)) |
5782 | XSETFASTINT (arg, lines / 2); | |
5783 | else | |
5784 | { | |
f6b43440 RS |
5785 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5786 | ||
5787 | if (iarg < 0) | |
5788 | iarg = iarg + lines; | |
5789 | ||
5790 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5791 | to a place inside the scroll margins (which would cause the | |
5792 | next redisplay to scroll). I wrote this code, but then concluded | |
5793 | it is probably better not to install it. However, it is here | |
5794 | inside #if 0 so as not to lose it. -- rms. */ | |
5795 | ||
5796 | /* Don't let it get into the margin at either top or bottom. */ | |
5797 | iarg = max (iarg, this_scroll_margin); | |
5798 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5799 | #endif | |
5800 | ||
5801 | arg = make_number (iarg); | |
b7617575 GM |
5802 | } |
5803 | ||
c8bc6f65 | 5804 | /* Skip past a partially visible first line. */ |
163784df | 5805 | if (w->vscroll) |
163784df MB |
5806 | XSETINT (arg, XINT (arg) + 1); |
5807 | ||
540b6aa0 | 5808 | return Fvertical_motion (arg, window); |
7ab12479 | 5809 | } |
5500c422 GM |
5810 | |
5811 | ||
7ab12479 | 5812 | \f |
5500c422 GM |
5813 | /*********************************************************************** |
5814 | Window Configuration | |
5815 | ***********************************************************************/ | |
5816 | ||
7ab12479 JB |
5817 | struct save_window_data |
5818 | { | |
d0fdb6da | 5819 | EMACS_UINT size; |
7ab12479 | 5820 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 5821 | Lisp_Object selected_frame; |
7ab12479 JB |
5822 | Lisp_Object current_window; |
5823 | Lisp_Object current_buffer; | |
5824 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5825 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5826 | Lisp_Object root_window; |
bdc727bf | 5827 | Lisp_Object focus_frame; |
cbff28e8 RS |
5828 | /* A vector, each of whose elements is a struct saved_window |
5829 | for one window. */ | |
7ab12479 | 5830 | Lisp_Object saved_windows; |
b05b4e27 SM |
5831 | |
5832 | /* All fields above are traced by the GC. | |
5833 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5834 | ||
5835 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5836 | int frame_tool_bar_lines; | |
7ab12479 | 5837 | }; |
ff06df24 | 5838 | |
cbff28e8 | 5839 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5840 | struct saved_window |
ea68264b GM |
5841 | { |
5842 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 5843 | EMACS_UINT size; |
ea68264b | 5844 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 5845 | |
ea68264b GM |
5846 | Lisp_Object window; |
5847 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5848 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5849 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5850 | Lisp_Object parent, prev; |
5851 | Lisp_Object start_at_line_beg; | |
5852 | Lisp_Object display_table; | |
949cf20f KS |
5853 | Lisp_Object orig_top_line, orig_total_lines; |
5854 | Lisp_Object left_margin_cols, right_margin_cols; | |
5855 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5856 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 5857 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
5858 | }; |
5859 | ||
7ab12479 JB |
5860 | #define SAVED_WINDOW_N(swv,n) \ |
5861 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5862 | ||
5863 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5864 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5865 | (object) | |
413430c5 | 5866 | Lisp_Object object; |
7ab12479 | 5867 | { |
6ad0381c | 5868 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5869 | } |
5870 | ||
3f8ab7bd | 5871 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5872 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5873 | (config) | |
3f8ab7bd RS |
5874 | Lisp_Object config; |
5875 | { | |
5876 | register struct save_window_data *data; | |
5877 | struct Lisp_Vector *saved_windows; | |
5878 | ||
663fbbba | 5879 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5880 | |
5881 | data = (struct save_window_data *) XVECTOR (config); | |
5882 | saved_windows = XVECTOR (data->saved_windows); | |
5883 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5884 | } | |
5885 | ||
d5b2799e | 5886 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5887 | Sset_window_configuration, 1, 1, 0, |
5888 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5889 | CONFIGURATION must be a value previously returned | |
5890 | by `current-window-configuration' (which see). | |
5891 | If CONFIGURATION was made from a frame that is now deleted, | |
5892 | only frame-independent values can be restored. In this case, | |
5893 | the return value is nil. Otherwise the value is t. */) | |
5894 | (configuration) | |
2f83aebe | 5895 | Lisp_Object configuration; |
7ab12479 | 5896 | { |
7ab12479 JB |
5897 | register struct save_window_data *data; |
5898 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5899 | Lisp_Object new_current_buffer; |
fd482be5 | 5900 | Lisp_Object frame; |
44fa5b1e | 5901 | FRAME_PTR f; |
72695e47 | 5902 | int old_point = -1; |
7ab12479 | 5903 | |
663fbbba | 5904 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5905 | |
2f83aebe | 5906 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5907 | saved_windows = XVECTOR (data->saved_windows); |
5908 | ||
7ab12479 | 5909 | new_current_buffer = data->current_buffer; |
265a9e55 | 5910 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5911 | new_current_buffer = Qnil; |
72695e47 | 5912 | else |
73cadfc1 DK |
5913 | { |
5914 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5915 | /* The code further down "preserves point" by saving here PT in |
5916 | old_point and then setting it later back into PT. When the | |
5917 | current-selected-window and the final-selected-window both show | |
5918 | the current buffer, this suffers from the problem that the | |
5919 | current PT is the window-point of the current-selected-window, | |
5920 | while the final PT is the point of the final-selected-window, so | |
5921 | this copy from one PT to the other would end up moving the | |
5922 | window-point of the final-selected-window to the window-point of | |
5923 | the current-selected-window. So we have to be careful which | |
5924 | point of the current-buffer we copy into old_point. */ | |
5925 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5926 | && WINDOWP (selected_window) | |
5927 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5928 | && !EQ (selected_window, data->current_window)) | |
5929 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5930 | else | |
5931 | old_point = PT; | |
73cadfc1 | 5932 | else |
203eb0aa SM |
5933 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5934 | point in new_current_buffer as of the last time this buffer was | |
5935 | used. This can be non-deterministic since it can be changed by | |
5936 | things like jit-lock by mere temporary selection of some random | |
5937 | window that happens to show this buffer. | |
5938 | So if possible we want this arbitrary choice of "which point" to | |
5939 | be the one from the to-be-selected-window so as to prevent this | |
5940 | window's cursor from being copied from another window. */ | |
5941 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5942 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5943 | && !EQ (selected_window, data->current_window)) | |
5944 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5945 | else | |
5946 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5947 | } |
7ab12479 | 5948 | |
fd482be5 JB |
5949 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5950 | f = XFRAME (frame); | |
177c0ea7 | 5951 | |
fd482be5 JB |
5952 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5953 | However, there is other stuff we should still try to do below. */ | |
5954 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5955 | { |
fd482be5 JB |
5956 | register struct window *w; |
5957 | register struct saved_window *p; | |
5500c422 GM |
5958 | struct window *root_window; |
5959 | struct window **leaf_windows; | |
5960 | int n_leaf_windows; | |
c4280705 | 5961 | int k, i, n; |
fd482be5 JB |
5962 | |
5963 | /* If the frame has been resized since this window configuration was | |
5964 | made, we change the frame to the size specified in the | |
5965 | configuration, restore the configuration, and then resize it | |
5966 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5967 | int previous_frame_lines = FRAME_LINES (f); |
5968 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5969 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5970 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5971 | |
d2b35234 RS |
5972 | /* The mouse highlighting code could get screwed up |
5973 | if it runs during this. */ | |
5974 | BLOCK_INPUT; | |
5975 | ||
b05b4e27 SM |
5976 | if (data->frame_lines != previous_frame_lines |
5977 | || data->frame_cols != previous_frame_cols) | |
5978 | change_frame_size (f, data->frame_lines, | |
5979 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5980 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5981 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5982 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5983 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5984 | make_number (0)); | |
4314246f | 5985 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5986 | if (data->frame_tool_bar_lines |
9ea173e8 | 5987 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5988 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5989 | make_number (0)); | |
4314246f | 5990 | #endif |
217f2871 | 5991 | #endif |
fd482be5 | 5992 | |
a46c0153 RS |
5993 | /* "Swap out" point from the selected window's buffer |
5994 | into the window itself. (Normally the pointm of the selected | |
5995 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5996 | restoring the window contents, and prevent it from |
5997 | being done later on when we select a new window. */ | |
596ae0cf RS |
5998 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5999 | { | |
6000 | w = XWINDOW (selected_window); | |
6001 | set_marker_both (w->pointm, | |
6002 | w->buffer, | |
6003 | BUF_PT (XBUFFER (w->buffer)), | |
6004 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6005 | } | |
6006 | ||
fd482be5 | 6007 | windows_or_buffers_changed++; |
29aeee73 | 6008 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6009 | |
5500c422 | 6010 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6011 | is a serious redisplay flickering problem. What we would |
5500c422 | 6012 | really like to do is to free only those matrices not reused |
9d14503e | 6013 | below. */ |
5500c422 GM |
6014 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
6015 | leaf_windows | |
6016 | = (struct window **) alloca (count_windows (root_window) | |
6017 | * sizeof (struct window *)); | |
6018 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6019 | ||
fd482be5 JB |
6020 | /* Kludge Alert! |
6021 | Mark all windows now on frame as "deleted". | |
6022 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6023 | |
fd482be5 JB |
6024 | Save their current buffers in their height fields, since we may |
6025 | need it later, if a buffer saved in the configuration is now | |
6026 | dead. */ | |
6027 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6028 | ||
6029 | for (k = 0; k < saved_windows->size; k++) | |
6030 | { | |
6031 | p = SAVED_WINDOW_N (saved_windows, k); | |
6032 | w = XWINDOW (p->window); | |
6033 | w->next = Qnil; | |
7ab12479 | 6034 | |
fd482be5 JB |
6035 | if (!NILP (p->parent)) |
6036 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6037 | XFASTINT (p->parent))->window; | |
6038 | else | |
6039 | w->parent = Qnil; | |
7ab12479 | 6040 | |
fd482be5 | 6041 | if (!NILP (p->prev)) |
7ab12479 | 6042 | { |
fd482be5 JB |
6043 | w->prev = SAVED_WINDOW_N (saved_windows, |
6044 | XFASTINT (p->prev))->window; | |
6045 | XWINDOW (w->prev)->next = p->window; | |
6046 | } | |
6047 | else | |
6048 | { | |
6049 | w->prev = Qnil; | |
6050 | if (!NILP (w->parent)) | |
6051 | { | |
949cf20f | 6052 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6053 | { |
6054 | XWINDOW (w->parent)->vchild = p->window; | |
6055 | XWINDOW (w->parent)->hchild = Qnil; | |
6056 | } | |
6057 | else | |
6058 | { | |
6059 | XWINDOW (w->parent)->hchild = p->window; | |
6060 | XWINDOW (w->parent)->vchild = Qnil; | |
6061 | } | |
6062 | } | |
6063 | } | |
6064 | ||
6065 | /* If we squirreled away the buffer in the window's height, | |
6066 | restore it now. */ | |
949cf20f KS |
6067 | if (BUFFERP (w->total_lines)) |
6068 | w->buffer = w->total_lines; | |
6069 | w->left_col = p->left_col; | |
6070 | w->top_line = p->top_line; | |
6071 | w->total_cols = p->total_cols; | |
6072 | w->total_lines = p->total_lines; | |
fd482be5 | 6073 | w->hscroll = p->hscroll; |
ea68264b | 6074 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6075 | w->display_table = p->display_table; |
949cf20f KS |
6076 | w->orig_top_line = p->orig_top_line; |
6077 | w->orig_total_lines = p->orig_total_lines; | |
6078 | w->left_margin_cols = p->left_margin_cols; | |
6079 | w->right_margin_cols = p->right_margin_cols; | |
6080 | w->left_fringe_width = p->left_fringe_width; | |
6081 | w->right_fringe_width = p->right_fringe_width; | |
6082 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6083 | w->scroll_bar_width = p->scroll_bar_width; | |
6084 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6085 | w->dedicated = p->dedicated; |
047aaeb9 | 6086 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6087 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6088 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6089 | |
6090 | /* Reinstall the saved buffer and pointers into it. */ | |
6091 | if (NILP (p->buffer)) | |
6092 | w->buffer = p->buffer; | |
6093 | else | |
6094 | { | |
6095 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6096 | /* If saved buffer is alive, install it. */ | |
6097 | { | |
6098 | w->buffer = p->buffer; | |
6099 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6100 | set_marker_restricted (w->start, p->start, w->buffer); |
6101 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6102 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6103 | p->mark, w->buffer); |
fd482be5 JB |
6104 | |
6105 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6106 | restore the location of point in the buffer which was |
6107 | current when the window configuration was recorded. */ | |
6b54027b RS |
6108 | if (!EQ (p->buffer, new_current_buffer) |
6109 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6110 | Fgoto_char (w->pointm); |
6111 | } | |
52a68e98 RS |
6112 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6113 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6114 | { |
fd482be5 JB |
6115 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6116 | /* This will set the markers to beginning of visible | |
6117 | range. */ | |
6118 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6119 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6120 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6121 | } |
6122 | else | |
fd482be5 | 6123 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6124 | are real. */ |
7ab12479 | 6125 | { |
fd482be5 JB |
6126 | /* Set window markers at start of visible range. */ |
6127 | if (XMARKER (w->start)->buffer == 0) | |
6128 | set_marker_restricted (w->start, make_number (0), | |
6129 | w->buffer); | |
6130 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6131 | set_marker_restricted_both (w->pointm, w->buffer, |
6132 | BUF_PT (XBUFFER (w->buffer)), | |
6133 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6134 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6135 | } |
6136 | } | |
6137 | } | |
9ace597f | 6138 | |
fd482be5 | 6139 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6140 | /* Prevent "swapping out point" in the old selected window |
6141 | using the buffer that has been restored into it. | |
a46c0153 | 6142 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6143 | selected_window = Qnil; |
a46c0153 RS |
6144 | |
6145 | /* Arrange *not* to restore point in the buffer that was | |
6146 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6147 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6148 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6149 | make_number (old_point), |
243a5ce6 | 6150 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6151 | |
14d87dc9 | 6152 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6153 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6154 | = selected_window; | |
7ab12479 | 6155 | |
db269683 | 6156 | if (NILP (data->focus_frame) |
017b2bad | 6157 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6158 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6159 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6160 | |
fd482be5 JB |
6161 | #if 0 /* I don't understand why this is needed, and it causes problems |
6162 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6163 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6164 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6165 | 0, 0); |
fd482be5 JB |
6166 | #endif |
6167 | ||
6168 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6169 | if (previous_frame_lines != FRAME_LINES (f) |
6170 | || previous_frame_cols != FRAME_COLS (f)) | |
6171 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6172 | 0, 0, 0); |
e3678b64 | 6173 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6174 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6175 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6176 | make_number (0)); | |
4314246f | 6177 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6178 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6179 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6180 | make_number (0)); | |
4314246f | 6181 | #endif |
217f2871 | 6182 | #endif |
d2b35234 | 6183 | |
5500c422 | 6184 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6185 | for (i = n = 0; i < n_leaf_windows; ++i) |
6186 | { | |
6187 | if (NILP (leaf_windows[i]->buffer)) | |
6188 | { | |
6189 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6190 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6191 | && NILP (leaf_windows[i]->vchild)); |
6192 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6193 | } |
6194 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6195 | ++n; | |
6196 | } | |
177c0ea7 | 6197 | |
5500c422 GM |
6198 | adjust_glyphs (f); |
6199 | ||
d2b35234 | 6200 | UNBLOCK_INPUT; |
756b6edc | 6201 | |
478292ed RS |
6202 | /* Fselect_window will have made f the selected frame, so we |
6203 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6204 | selected window too, but that doesn't make the call to | |
6205 | Fselect_window above totally superfluous; it still sets f's | |
6206 | selected window. */ | |
6207 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6208 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed | 6209 | |
eeca6f6f | 6210 | run_window_configuration_change_hook (f); |
478292ed | 6211 | } |
bdc727bf JB |
6212 | |
6213 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6214 | Fset_buffer (new_current_buffer); |
bdc727bf | 6215 | |
478292ed | 6216 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6217 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6218 | |
3f8ab7bd | 6219 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6220 | } |
6221 | ||
44fa5b1e | 6222 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6223 | by setting their buffers to nil. */ |
6224 | ||
fd482be5 | 6225 | void |
7ab12479 JB |
6226 | delete_all_subwindows (w) |
6227 | register struct window *w; | |
6228 | { | |
265a9e55 | 6229 | if (!NILP (w->next)) |
7ab12479 | 6230 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6231 | if (!NILP (w->vchild)) |
7ab12479 | 6232 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6233 | if (!NILP (w->hchild)) |
7ab12479 | 6234 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6235 | |
949cf20f | 6236 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6237 | |
86e48436 RS |
6238 | if (!NILP (w->buffer)) |
6239 | unshow_buffer (w); | |
6240 | ||
605be8af JB |
6241 | /* We set all three of these fields to nil, to make sure that we can |
6242 | distinguish this dead window from any live window. Live leaf | |
6243 | windows will have buffer set, and combination windows will have | |
6244 | vchild or hchild set. */ | |
6245 | w->buffer = Qnil; | |
6246 | w->vchild = Qnil; | |
6247 | w->hchild = Qnil; | |
acf70840 GM |
6248 | |
6249 | Vwindow_list = Qnil; | |
7ab12479 JB |
6250 | } |
6251 | \f | |
6252 | static int | |
6253 | count_windows (window) | |
6254 | register struct window *window; | |
6255 | { | |
6256 | register int count = 1; | |
265a9e55 | 6257 | if (!NILP (window->next)) |
7ab12479 | 6258 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6259 | if (!NILP (window->vchild)) |
7ab12479 | 6260 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6261 | if (!NILP (window->hchild)) |
7ab12479 JB |
6262 | count += count_windows (XWINDOW (window->hchild)); |
6263 | return count; | |
6264 | } | |
6265 | ||
5500c422 | 6266 | |
177c0ea7 | 6267 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6268 | Value is last index + 1. */ |
6269 | ||
6270 | static int | |
6271 | get_leaf_windows (w, flat, i) | |
6272 | struct window *w; | |
6273 | struct window **flat; | |
6274 | int i; | |
6275 | { | |
6276 | while (w) | |
6277 | { | |
6278 | if (!NILP (w->hchild)) | |
6279 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6280 | else if (!NILP (w->vchild)) | |
6281 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6282 | else |
5500c422 GM |
6283 | flat[i++] = w; |
6284 | ||
6285 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6286 | } | |
6287 | ||
6288 | return i; | |
6289 | } | |
6290 | ||
6291 | ||
6292 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6293 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6294 | can be returned. */ | |
6295 | ||
6296 | struct glyph * | |
6297 | get_phys_cursor_glyph (w) | |
6298 | struct window *w; | |
6299 | { | |
6300 | struct glyph_row *row; | |
6301 | struct glyph *glyph; | |
6302 | ||
6303 | if (w->phys_cursor.vpos >= 0 | |
6304 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6305 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6306 | row->enabled_p) | |
6307 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6308 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6309 | else | |
6310 | glyph = NULL; | |
6311 | ||
6312 | return glyph; | |
6313 | } | |
6314 | ||
6315 | ||
7ab12479 JB |
6316 | static int |
6317 | save_window_save (window, vector, i) | |
6318 | Lisp_Object window; | |
6319 | struct Lisp_Vector *vector; | |
6320 | int i; | |
6321 | { | |
6322 | register struct saved_window *p; | |
6323 | register struct window *w; | |
6324 | register Lisp_Object tem; | |
6325 | ||
265a9e55 | 6326 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6327 | { |
6328 | p = SAVED_WINDOW_N (vector, i); | |
6329 | w = XWINDOW (window); | |
6330 | ||
2a1893f4 | 6331 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6332 | p->window = window; |
6333 | p->buffer = w->buffer; | |
949cf20f KS |
6334 | p->left_col = w->left_col; |
6335 | p->top_line = w->top_line; | |
6336 | p->total_cols = w->total_cols; | |
6337 | p->total_lines = w->total_lines; | |
7ab12479 | 6338 | p->hscroll = w->hscroll; |
ea68264b | 6339 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6340 | p->display_table = w->display_table; |
949cf20f KS |
6341 | p->orig_top_line = w->orig_top_line; |
6342 | p->orig_total_lines = w->orig_total_lines; | |
6343 | p->left_margin_cols = w->left_margin_cols; | |
6344 | p->right_margin_cols = w->right_margin_cols; | |
6345 | p->left_fringe_width = w->left_fringe_width; | |
6346 | p->right_fringe_width = w->right_fringe_width; | |
6347 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6348 | p->scroll_bar_width = w->scroll_bar_width; | |
6349 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6350 | p->dedicated = w->dedicated; |
047aaeb9 | 6351 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6352 | if (!NILP (w->buffer)) |
7ab12479 JB |
6353 | { |
6354 | /* Save w's value of point in the window configuration. | |
6355 | If w is the selected window, then get the value of point | |
6356 | from the buffer; pointm is garbage in the selected window. */ | |
6357 | if (EQ (window, selected_window)) | |
6358 | { | |
6359 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6360 | set_marker_both (p->pointm, w->buffer, |
6361 | BUF_PT (XBUFFER (w->buffer)), | |
6362 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6363 | } |
6364 | else | |
eeb82665 | 6365 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6366 | |
eeb82665 | 6367 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6368 | p->start_at_line_beg = w->start_at_line_beg; |
6369 | ||
6370 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6371 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6372 | } |
6373 | else | |
6374 | { | |
6375 | p->pointm = Qnil; | |
6376 | p->start = Qnil; | |
6377 | p->mark = Qnil; | |
6378 | p->start_at_line_beg = Qnil; | |
6379 | } | |
6380 | ||
265a9e55 | 6381 | if (NILP (w->parent)) |
7ab12479 JB |
6382 | p->parent = Qnil; |
6383 | else | |
6384 | p->parent = XWINDOW (w->parent)->temslot; | |
6385 | ||
265a9e55 | 6386 | if (NILP (w->prev)) |
7ab12479 JB |
6387 | p->prev = Qnil; |
6388 | else | |
6389 | p->prev = XWINDOW (w->prev)->temslot; | |
6390 | ||
265a9e55 | 6391 | if (!NILP (w->vchild)) |
7ab12479 | 6392 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6393 | if (!NILP (w->hchild)) |
7ab12479 JB |
6394 | i = save_window_save (w->hchild, vector, i); |
6395 | } | |
6396 | ||
6397 | return i; | |
6398 | } | |
6399 | ||
a0d76c27 | 6400 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6401 | Scurrent_window_configuration, 0, 1, 0, |
6402 | doc: /* Return an object representing the current window configuration of FRAME. | |
6403 | If FRAME is nil or omitted, use the selected frame. | |
6404 | This describes the number of windows, their sizes and current buffers, | |
6405 | and for each displayed buffer, where display starts, and the positions of | |
6406 | point and mark. An exception is made for point in the current buffer: | |
6407 | its value is -not- saved. | |
6408 | This also records the currently selected frame, and FRAME's focus | |
6409 | redirection (see `redirect-frame-focus'). */) | |
6410 | (frame) | |
44fa5b1e | 6411 | Lisp_Object frame; |
7ab12479 JB |
6412 | { |
6413 | register Lisp_Object tem; | |
6414 | register int n_windows; | |
6415 | register struct save_window_data *data; | |
6416 | register int i; | |
44fa5b1e | 6417 | FRAME_PTR f; |
43bad991 | 6418 | |
44fa5b1e | 6419 | if (NILP (frame)) |
1ae1a37d | 6420 | frame = selected_frame; |
b7826503 | 6421 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6422 | f = XFRAME (frame); |
7ab12479 | 6423 | |
44fa5b1e | 6424 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6425 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6426 | PVEC_WINDOW_CONFIGURATION); | |
6427 | ||
6428 | data->frame_cols = FRAME_COLS (f); | |
6429 | data->frame_lines = FRAME_LINES (f); | |
6430 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6431 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6432 | data->selected_frame = selected_frame; |
44fa5b1e | 6433 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6434 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6435 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6436 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6437 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6438 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6439 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6440 | data->saved_windows = tem; | |
6441 | for (i = 0; i < n_windows; i++) | |
6442 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6443 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6444 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6445 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6446 | return (tem); |
6447 | } | |
6448 | ||
6449 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6450 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6451 | doc: /* Execute BODY, preserving window sizes and contents. |
6452 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6453 | Restore which buffer appears in which window, where display starts, |
6454 | and the value of point and mark for each window. | |
6455 | Also restore the choice of selected window. | |
6456 | Also restore which buffer is current. | |
6924dda6 | 6457 | Does not restore the value of point in current buffer. |
7254a30c | 6458 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6459 | (args) |
7ab12479 JB |
6460 | Lisp_Object args; |
6461 | { | |
6462 | register Lisp_Object val; | |
aed13378 | 6463 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6464 | |
6465 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6466 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6467 | val = Fprogn (args); |
6468 | return unbind_to (count, val); | |
6469 | } | |
5500c422 | 6470 | |
94e16dd5 KS |
6471 | |
6472 | \f | |
6473 | /*********************************************************************** | |
6474 | Window Split Tree | |
6475 | ***********************************************************************/ | |
6476 | ||
6477 | static Lisp_Object | |
c16e1cc3 | 6478 | window_tree (w) |
94e16dd5 KS |
6479 | struct window *w; |
6480 | { | |
6481 | Lisp_Object tail = Qnil; | |
6482 | Lisp_Object result = Qnil; | |
6483 | ||
6484 | while (w) | |
6485 | { | |
6486 | Lisp_Object wn; | |
6487 | ||
6488 | XSETWINDOW (wn, w); | |
6489 | if (!NILP (w->hchild)) | |
6490 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6491 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6492 | else if (!NILP (w->vchild)) |
6493 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6494 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6495 | |
6496 | if (NILP (result)) | |
6497 | { | |
6498 | result = tail = Fcons (wn, Qnil); | |
6499 | } | |
6500 | else | |
6501 | { | |
6502 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6503 | tail = XCDR (tail); | |
6504 | } | |
6505 | ||
6506 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6507 | } | |
6508 | ||
6509 | return result; | |
6510 | } | |
6511 | ||
6512 | ||
6513 | ||
c16e1cc3 | 6514 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6515 | 0, 1, 0, |
c16e1cc3 | 6516 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6517 | |
6518 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6519 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6520 | is the frame's minibuffer window. |
6521 | ||
6522 | If the root window is not split, ROOT is the root window itself. | |
6523 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6524 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6525 | size and position of the subwindows in the split, and the rest of the |
6526 | elements are the subwindows in the split. Each of the subwindows may | |
6527 | again be a window or a list representing a window split, and so on. | |
6528 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6529 | ||
6530 | If FRAME is nil or omitted, return information on the currently | |
6531 | selected frame. */) | |
6532 | (frame) | |
6533 | Lisp_Object frame; | |
6534 | { | |
94e16dd5 KS |
6535 | FRAME_PTR f; |
6536 | ||
6537 | if (NILP (frame)) | |
6538 | frame = selected_frame; | |
6539 | ||
6540 | CHECK_FRAME (frame); | |
6541 | f = XFRAME (frame); | |
6542 | ||
6543 | if (!FRAME_LIVE_P (f)) | |
6544 | return Qnil; | |
6545 | ||
c16e1cc3 | 6546 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6547 | } |
6548 | ||
5500c422 GM |
6549 | \f |
6550 | /*********************************************************************** | |
6551 | Marginal Areas | |
6552 | ***********************************************************************/ | |
6553 | ||
6554 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6555 | 2, 3, 0, |
fdb82f93 | 6556 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6557 | If WINDOW is nil, set margins of the currently selected window. |
6558 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6559 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6560 | does the same for the right marginal area. A nil width parameter | |
6561 | means no margin. */) | |
c10ce82e JB |
6562 | (window, left_width, right_width) |
6563 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6564 | { |
6565 | struct window *w = decode_window (window); | |
5500c422 | 6566 | |
6b61353c KH |
6567 | /* Translate negative or zero widths to nil. |
6568 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6569 | |
c10ce82e | 6570 | if (!NILP (left_width)) |
6b61353c | 6571 | { |
c10ce82e JB |
6572 | CHECK_NUMBER (left_width); |
6573 | if (XINT (left_width) <= 0) | |
6574 | left_width = Qnil; | |
6b61353c | 6575 | } |
5500c422 | 6576 | |
c10ce82e | 6577 | if (!NILP (right_width)) |
6b61353c | 6578 | { |
c10ce82e JB |
6579 | CHECK_NUMBER (right_width); |
6580 | if (XINT (right_width) <= 0) | |
6581 | right_width = Qnil; | |
6b61353c | 6582 | } |
5500c422 | 6583 | |
c10ce82e JB |
6584 | if (!EQ (w->left_margin_cols, left_width) |
6585 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6586 | { |
c10ce82e JB |
6587 | w->left_margin_cols = left_width; |
6588 | w->right_margin_cols = right_width; | |
949cf20f KS |
6589 | |
6590 | adjust_window_margins (w); | |
6591 | ||
6592 | ++windows_or_buffers_changed; | |
6593 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6594 | } | |
5500c422 | 6595 | |
5500c422 GM |
6596 | return Qnil; |
6597 | } | |
6598 | ||
6599 | ||
6600 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6601 | 0, 1, 0, | |
fdb82f93 PJ |
6602 | doc: /* Get width of marginal areas of window WINDOW. |
6603 | If WINDOW is omitted or nil, use the currently selected window. | |
6604 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6605 | If a marginal area does not exist, its width will be returned | |
6606 | as nil. */) | |
6607 | (window) | |
5500c422 GM |
6608 | Lisp_Object window; |
6609 | { | |
6610 | struct window *w = decode_window (window); | |
949cf20f KS |
6611 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6612 | } | |
6613 | ||
6614 | ||
6615 | \f | |
6616 | /*********************************************************************** | |
6617 | Fringes | |
6618 | ***********************************************************************/ | |
6619 | ||
6620 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6621 | 2, 4, 0, | |
6b61353c KH |
6622 | doc: /* Set the fringe widths of window WINDOW. |
6623 | If WINDOW is nil, set the fringe widths of the currently selected | |
6624 | window. | |
6625 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6626 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6627 | fringe width. If a fringe width arg is nil, that means to use the | |
6628 | frame's default fringe width. Default fringe widths can be set with | |
6629 | the command `set-fringe-style'. | |
6630 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6631 | outside of the display margins. By default, fringes are drawn between | |
6632 | display marginal areas and the text area. */) | |
c10ce82e JB |
6633 | (window, left_width, right_width, outside_margins) |
6634 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6635 | { |
6636 | struct window *w = decode_window (window); | |
6637 | ||
c10ce82e JB |
6638 | if (!NILP (left_width)) |
6639 | CHECK_NATNUM (left_width); | |
6640 | if (!NILP (right_width)) | |
6641 | CHECK_NATNUM (right_width); | |
5a857365 | 6642 | |
017e297e | 6643 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6644 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6645 | && (!EQ (w->left_fringe_width, left_width) | |
6646 | || !EQ (w->right_fringe_width, right_width) | |
6647 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6648 | { |
c10ce82e JB |
6649 | w->left_fringe_width = left_width; |
6650 | w->right_fringe_width = right_width; | |
949cf20f KS |
6651 | w->fringes_outside_margins = outside_margins; |
6652 | ||
6653 | adjust_window_margins (w); | |
6654 | ||
6655 | clear_glyph_matrix (w->current_matrix); | |
6656 | w->window_end_valid = Qnil; | |
6657 | ||
6658 | ++windows_or_buffers_changed; | |
6659 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6660 | } | |
6661 | ||
6662 | return Qnil; | |
6663 | } | |
6664 | ||
6665 | ||
6666 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6667 | 0, 1, 0, | |
6668 | doc: /* Get width of fringes of window WINDOW. | |
6669 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6670 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6671 | (window) |
6672 | Lisp_Object window; | |
6673 | { | |
6674 | struct window *w = decode_window (window); | |
d46c6df5 | 6675 | |
949cf20f KS |
6676 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6677 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6678 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6679 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6680 | } |
6681 | ||
6682 | ||
6683 | \f | |
6684 | /*********************************************************************** | |
6685 | Scroll bars | |
6686 | ***********************************************************************/ | |
6687 | ||
6688 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6689 | 2, 4, 0, | |
6690 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6691 | If window is nil, set scroll bars of the currently selected window. | |
6692 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6693 | this is automatically adjusted to a multiple of the frame column width. | |
6694 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6695 | bar: left, right, or nil. | |
6b61353c | 6696 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6697 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6698 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6699 | (window, width, vertical_type, horizontal_type) |
6700 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6701 | { |
6702 | struct window *w = decode_window (window); | |
6703 | ||
6704 | if (!NILP (width)) | |
0f8fe9a2 SM |
6705 | { |
6706 | CHECK_NATNUM (width); | |
949cf20f | 6707 | |
0f8fe9a2 SM |
6708 | if (XINT (width) == 0) |
6709 | vertical_type = Qnil; | |
6710 | } | |
949cf20f | 6711 | |
413a79ad | 6712 | if (!(NILP (vertical_type) |
0cc1039f | 6713 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6714 | || EQ (vertical_type, Qright) |
6715 | || EQ (vertical_type, Qt))) | |
6716 | error ("Invalid type of vertical scroll bar"); | |
6717 | ||
949cf20f KS |
6718 | if (!EQ (w->scroll_bar_width, width) |
6719 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6720 | { | |
6721 | w->scroll_bar_width = width; | |
6722 | w->vertical_scroll_bar_type = vertical_type; | |
6723 | ||
6724 | adjust_window_margins (w); | |
6725 | ||
6726 | clear_glyph_matrix (w->current_matrix); | |
6727 | w->window_end_valid = Qnil; | |
6728 | ||
6729 | ++windows_or_buffers_changed; | |
6730 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6731 | } | |
6732 | ||
6733 | return Qnil; | |
6734 | } | |
6735 | ||
6736 | ||
6737 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6738 | 0, 1, 0, | |
6739 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6740 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6741 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6742 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6743 | value. */) | |
949cf20f KS |
6744 | (window) |
6745 | Lisp_Object window; | |
6746 | { | |
6747 | struct window *w = decode_window (window); | |
6748 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6749 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6750 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6751 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6752 | Fcons (w->vertical_scroll_bar_type, | |
6753 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6754 | } |
6755 | ||
6756 | ||
7ab12479 | 6757 | \f |
5500c422 GM |
6758 | /*********************************************************************** |
6759 | Smooth scrolling | |
6760 | ***********************************************************************/ | |
6761 | ||
0cc1039f | 6762 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6763 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6764 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6765 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6766 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6767 | (window, pixels_p) |
6768 | Lisp_Object window, pixels_p; | |
5500c422 | 6769 | { |
47004952 | 6770 | Lisp_Object result; |
5500c422 GM |
6771 | struct frame *f; |
6772 | struct window *w; | |
177c0ea7 | 6773 | |
5500c422 GM |
6774 | if (NILP (window)) |
6775 | window = selected_window; | |
47004952 | 6776 | else |
b7826503 | 6777 | CHECK_WINDOW (window); |
5500c422 GM |
6778 | w = XWINDOW (window); |
6779 | f = XFRAME (w->frame); | |
177c0ea7 | 6780 | |
5500c422 | 6781 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6782 | result = (NILP (pixels_p) |
6783 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6784 | : make_number (-w->vscroll)); | |
5500c422 | 6785 | else |
47004952 GM |
6786 | result = make_number (0); |
6787 | return result; | |
5500c422 GM |
6788 | } |
6789 | ||
6790 | ||
6791 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6792 | 2, 3, 0, |
fdb82f93 | 6793 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6794 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6795 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6796 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6797 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6798 | corresponds to an integral number of pixels. The return value is the | |
6799 | result of this rounding. | |
6800 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6801 | (window, vscroll, pixels_p) |
6802 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6803 | { |
6804 | struct window *w; | |
6805 | struct frame *f; | |
177c0ea7 | 6806 | |
5500c422 GM |
6807 | if (NILP (window)) |
6808 | window = selected_window; | |
47004952 | 6809 | else |
b7826503 PJ |
6810 | CHECK_WINDOW (window); |
6811 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6812 | |
5500c422 GM |
6813 | w = XWINDOW (window); |
6814 | f = XFRAME (w->frame); | |
6815 | ||
6816 | if (FRAME_WINDOW_P (f)) | |
6817 | { | |
6818 | int old_dy = w->vscroll; | |
177c0ea7 | 6819 | |
0cc1039f KS |
6820 | w->vscroll = - (NILP (pixels_p) |
6821 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6822 | : XFLOATINT (vscroll)); | |
47004952 | 6823 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6824 | |
e56263e5 KS |
6825 | if (w->vscroll != old_dy) |
6826 | { | |
6827 | /* Adjust glyph matrix of the frame if the virtual display | |
6828 | area becomes larger than before. */ | |
6829 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6830 | adjust_glyphs (f); | |
177c0ea7 | 6831 | |
e56263e5 KS |
6832 | /* Prevent redisplay shortcuts. */ |
6833 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6834 | } | |
5500c422 | 6835 | } |
177c0ea7 | 6836 | |
0cc1039f | 6837 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6838 | } |
177c0ea7 | 6839 | |
7bbb5782 GM |
6840 | \f |
6841 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6842 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6843 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6844 | |
6845 | void | |
f95464e4 | 6846 | foreach_window (f, fn, user_data) |
7bbb5782 | 6847 | struct frame *f; |
f95464e4 GM |
6848 | int (* fn) P_ ((struct window *, void *)); |
6849 | void *user_data; | |
7bbb5782 | 6850 | { |
76fb556f YM |
6851 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
6852 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
6853 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6854 | } |
6855 | ||
6856 | ||
6857 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6858 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6859 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6860 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6861 | |
67492200 | 6862 | static int |
f95464e4 | 6863 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 6864 | struct window *w; |
f95464e4 GM |
6865 | int (* fn) P_ ((struct window *, void *)); |
6866 | void *user_data; | |
7bbb5782 | 6867 | { |
67492200 | 6868 | int cont; |
177c0ea7 | 6869 | |
67492200 | 6870 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6871 | { |
6872 | if (!NILP (w->hchild)) | |
f95464e4 | 6873 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6874 | else if (!NILP (w->vchild)) |
f95464e4 | 6875 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6876 | else |
0f532a9a | 6877 | cont = fn (w, user_data); |
177c0ea7 | 6878 | |
7bbb5782 GM |
6879 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6880 | } | |
67492200 GM |
6881 | |
6882 | return cont; | |
7bbb5782 GM |
6883 | } |
6884 | ||
6885 | ||
6d194a45 | 6886 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6887 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6888 | the window start. */ |
6889 | ||
67492200 | 6890 | static int |
7bbb5782 GM |
6891 | freeze_window_start (w, freeze_p) |
6892 | struct window *w; | |
f95464e4 | 6893 | void *freeze_p; |
7bbb5782 | 6894 | { |
08c1d235 SM |
6895 | if (MINI_WINDOW_P (w) |
6896 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6897 | && (w == XWINDOW (selected_window) | |
6898 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6899 | && ! NILP (Vminibuf_scroll_window) | |
6900 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6901 | freeze_p = NULL; |
177c0ea7 | 6902 | |
f95464e4 | 6903 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6904 | return 1; |
7bbb5782 GM |
6905 | } |
6906 | ||
6907 | ||
6908 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6909 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6910 | means freeze the window start. */ | |
6911 | ||
6912 | void | |
6913 | freeze_window_starts (f, freeze_p) | |
6914 | struct frame *f; | |
6915 | int freeze_p; | |
6916 | { | |
cbccabec | 6917 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6918 | } |
5500c422 GM |
6919 | |
6920 | \f | |
6921 | /*********************************************************************** | |
6922 | Initialization | |
6923 | ***********************************************************************/ | |
6924 | ||
cbff28e8 | 6925 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 6926 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
6927 | |
6928 | int | |
2f8274be | 6929 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 6930 | Lisp_Object c1, c2; |
2f8274be | 6931 | int ignore_positions; |
cbff28e8 RS |
6932 | { |
6933 | register struct save_window_data *d1, *d2; | |
6934 | struct Lisp_Vector *sw1, *sw2; | |
6935 | int i; | |
6936 | ||
663fbbba KS |
6937 | CHECK_WINDOW_CONFIGURATION (c1); |
6938 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 6939 | |
cbff28e8 RS |
6940 | d1 = (struct save_window_data *) XVECTOR (c1); |
6941 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6942 | sw1 = XVECTOR (d1->saved_windows); | |
6943 | sw2 = XVECTOR (d2->saved_windows); | |
6944 | ||
b05b4e27 | 6945 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 6946 | return 0; |
b05b4e27 | 6947 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 6948 | return 0; |
b05b4e27 | 6949 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
6950 | return 0; |
6951 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6952 | return 0; | |
6953 | /* Don't compare the current_window field directly. | |
6954 | Instead see w1_is_current and w2_is_current, below. */ | |
6955 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6956 | return 0; | |
2f8274be | 6957 | if (! ignore_positions) |
3f49fddc KS |
6958 | { |
6959 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6960 | return 0; | |
6961 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6962 | return 0; | |
6963 | } | |
cbff28e8 RS |
6964 | /* Don't compare the root_window field. |
6965 | We don't require the two configurations | |
6966 | to use the same window object, | |
6967 | and the two root windows must be equivalent | |
6968 | if everything else compares equal. */ | |
6969 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6970 | return 0; | |
cbff28e8 RS |
6971 | |
6972 | /* Verify that the two confis have the same number of windows. */ | |
6973 | if (sw1->size != sw2->size) | |
6974 | return 0; | |
6975 | ||
6976 | for (i = 0; i < sw1->size; i++) | |
6977 | { | |
6978 | struct saved_window *p1, *p2; | |
6979 | int w1_is_current, w2_is_current; | |
6980 | ||
6981 | p1 = SAVED_WINDOW_N (sw1, i); | |
6982 | p2 = SAVED_WINDOW_N (sw2, i); | |
6983 | ||
6984 | /* Verify that the current windows in the two | |
6985 | configurations correspond to each other. */ | |
6986 | w1_is_current = EQ (d1->current_window, p1->window); | |
6987 | w2_is_current = EQ (d2->current_window, p2->window); | |
6988 | ||
6989 | if (w1_is_current != w2_is_current) | |
6990 | return 0; | |
6991 | ||
6992 | /* Verify that the corresponding windows do match. */ | |
6993 | if (! EQ (p1->buffer, p2->buffer)) | |
6994 | return 0; | |
949cf20f | 6995 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6996 | return 0; |
949cf20f | 6997 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6998 | return 0; |
949cf20f | 6999 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7000 | return 0; |
949cf20f | 7001 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7002 | return 0; |
cbff28e8 RS |
7003 | if (! EQ (p1->display_table, p2->display_table)) |
7004 | return 0; | |
7005 | if (! EQ (p1->parent, p2->parent)) | |
7006 | return 0; | |
7007 | if (! EQ (p1->prev, p2->prev)) | |
7008 | return 0; | |
2f8274be RS |
7009 | if (! ignore_positions) |
7010 | { | |
7011 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7012 | return 0; | |
ea68264b GM |
7013 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7014 | return 0; | |
2f8274be RS |
7015 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7016 | return 0; | |
7017 | if (NILP (Fequal (p1->start, p2->start))) | |
7018 | return 0; | |
7019 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7020 | return 0; | |
7021 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7022 | return 0; | |
7023 | } | |
949cf20f KS |
7024 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7025 | return 0; | |
7026 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7027 | return 0; | |
7028 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7029 | return 0; | |
7030 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7031 | return 0; | |
7032 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7033 | return 0; | |
7034 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7035 | return 0; | |
7036 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7037 | return 0; | |
cbff28e8 RS |
7038 | } |
7039 | ||
7040 | return 1; | |
7041 | } | |
2f8274be RS |
7042 | |
7043 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7044 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7045 | doc: /* Compare two window configurations as regards the structure of windows. |
7046 | This function ignores details such as the values of point and mark | |
7047 | and scrolling positions. */) | |
7048 | (x, y) | |
2f8274be RS |
7049 | Lisp_Object x, y; |
7050 | { | |
7051 | if (compare_window_configurations (x, y, 1)) | |
7052 | return Qt; | |
7053 | return Qnil; | |
7054 | } | |
cbff28e8 | 7055 | \f |
dfcf069d | 7056 | void |
7ab12479 JB |
7057 | init_window_once () |
7058 | { | |
3224dac1 | 7059 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7060 | XSETFRAME (selected_frame, f); |
7061 | Vterminal_frame = selected_frame; | |
7062 | minibuf_window = f->minibuffer_window; | |
7063 | selected_window = f->selected_window; | |
7064 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7065 | |
7066 | window_initialized = 1; | |
7ab12479 JB |
7067 | } |
7068 | ||
67492200 GM |
7069 | void |
7070 | init_window () | |
7071 | { | |
7072 | Vwindow_list = Qnil; | |
7073 | } | |
7074 | ||
dfcf069d | 7075 | void |
7ab12479 JB |
7076 | syms_of_window () |
7077 | { | |
c525d842 CY |
7078 | Qscroll_up = intern ("scroll-up"); |
7079 | staticpro (&Qscroll_up); | |
7080 | ||
7081 | Qscroll_down = intern ("scroll-down"); | |
7082 | staticpro (&Qscroll_down); | |
7083 | ||
8a37516b GM |
7084 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7085 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7086 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7087 | |
543f5fb1 RS |
7088 | staticpro (&Qwindow_configuration_change_hook); |
7089 | Qwindow_configuration_change_hook | |
7090 | = intern ("window-configuration-change-hook"); | |
7091 | ||
7ab12479 JB |
7092 | Qwindowp = intern ("windowp"); |
7093 | staticpro (&Qwindowp); | |
7094 | ||
3f8ab7bd RS |
7095 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7096 | staticpro (&Qwindow_configuration_p); | |
7097 | ||
806b4d9b JB |
7098 | Qwindow_live_p = intern ("window-live-p"); |
7099 | staticpro (&Qwindow_live_p); | |
605be8af | 7100 | |
87478b52 SM |
7101 | Qdisplay_buffer = intern ("display-buffer"); |
7102 | staticpro (&Qdisplay_buffer); | |
7103 | ||
2cccc823 | 7104 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7105 | staticpro (&Qtemp_buffer_show_hook); |
7106 | ||
67492200 | 7107 | staticpro (&Vwindow_list); |
8bfb170b KS |
7108 | |
7109 | minibuf_selected_window = Qnil; | |
3dbab091 | 7110 | staticpro (&minibuf_selected_window); |
67492200 | 7111 | |
c876b227 | 7112 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7113 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7114 | window_scroll_preserve_hpos = -1; |
7115 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7116 | |
7ab12479 | 7117 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7118 | doc: /* Non-nil means call as function to display a help buffer. |
7119 | The function is called with one argument, the buffer to be displayed. | |
7120 | Used by `with-output-to-temp-buffer'. | |
7121 | If this function is used, then it must do the entire job of showing | |
7122 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7123 | Vtemp_buffer_show_function = Qnil; |
7124 | ||
7ab12479 | 7125 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7126 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7127 | Vminibuf_scroll_window = Qnil; |
7128 | ||
cc91894c | 7129 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7130 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7131 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7132 | is displayed in the `mode-line' face. */); | |
7133 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7134 | |
7ab12479 | 7135 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7136 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7137 | Vother_window_scroll_buffer = Qnil; |
7138 | ||
e56263e5 KS |
7139 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7140 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7141 | auto_window_vscroll_p = 1; | |
7142 | ||
7ab12479 | 7143 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, |
fdb82f93 | 7144 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7145 | next_screen_context_lines = 2; |
7146 | ||
7ab12479 | 7147 | DEFVAR_INT ("window-min-height", &window_min_height, |
047aaeb9 MR |
7148 | doc: /* Allow deleting windows less than this tall. |
7149 | The value is measured in line units. If a window wants a modeline it | |
7150 | is counted as one line. | |
7151 | ||
7152 | Emacs honors settings of this variable when enlarging or shrinking | |
7153 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7154 | window_min_height = 4; |
7155 | ||
7156 | DEFVAR_INT ("window-min-width", &window_min_width, | |
047aaeb9 MR |
7157 | doc: /* Allow deleting windows less than this wide. |
7158 | The value is measured in characters and includes any fringes or | |
7159 | the scrollbar. | |
7160 | ||
7161 | Emacs honors settings of this variable when enlarging or shrinking | |
7162 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7163 | window_min_width = 10; |
7164 | ||
5500c422 GM |
7165 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7166 | &Vscroll_preserve_screen_position, | |
c876b227 | 7167 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7168 | A value of nil means point does not keep its screen position except |
7169 | at the scroll margin or window boundary respectively. | |
7170 | A value of t means point keeps its screen position if the scroll | |
7171 | command moved it vertically out of the window, e.g. when scrolling | |
7172 | by full screens. | |
7173 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7174 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7175 | |
a1562258 SM |
7176 | DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type, |
7177 | doc: /* Type of marker to use for `window-point'. */); | |
7178 | Vwindow_point_insertion_type = Qnil; | |
7179 | ||
543f5fb1 RS |
7180 | DEFVAR_LISP ("window-configuration-change-hook", |
7181 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7182 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7183 | The buffer-local part is run once per window, with the relevant window |
7184 | selected; while the global part is run only once for the modified frame, | |
7185 | with the relevant frame selected. */); | |
543f5fb1 RS |
7186 | Vwindow_configuration_change_hook = Qnil; |
7187 | ||
7ab12479 JB |
7188 | defsubr (&Sselected_window); |
7189 | defsubr (&Sminibuffer_window); | |
7190 | defsubr (&Swindow_minibuffer_p); | |
7191 | defsubr (&Swindowp); | |
806b4d9b | 7192 | defsubr (&Swindow_live_p); |
7ab12479 | 7193 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7194 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7195 | defsubr (&Swindow_buffer); |
7196 | defsubr (&Swindow_height); | |
7197 | defsubr (&Swindow_width); | |
35ea56c9 | 7198 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7199 | defsubr (&Swindow_hscroll); |
7200 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7201 | defsubr (&Swindow_redisplay_end_trigger); |
7202 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7203 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7204 | defsubr (&Swindow_pixel_edges); |
7205 | defsubr (&Swindow_inside_edges); | |
7206 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7207 | defsubr (&Scoordinates_in_window_p); |
7208 | defsubr (&Swindow_at); | |
7ab12479 JB |
7209 | defsubr (&Swindow_point); |
7210 | defsubr (&Swindow_start); | |
7211 | defsubr (&Swindow_end); | |
7212 | defsubr (&Sset_window_point); | |
7213 | defsubr (&Sset_window_start); | |
7214 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7215 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7216 | defsubr (&Swindow_display_table); |
7217 | defsubr (&Sset_window_display_table); | |
7218 | defsubr (&Snext_window); | |
7219 | defsubr (&Sprevious_window); | |
7220 | defsubr (&Sother_window); | |
7221 | defsubr (&Sget_lru_window); | |
7222 | defsubr (&Sget_largest_window); | |
7223 | defsubr (&Sget_buffer_window); | |
7224 | defsubr (&Sdelete_other_windows); | |
7225 | defsubr (&Sdelete_windows_on); | |
7226 | defsubr (&Sreplace_buffer_in_windows); | |
7227 | defsubr (&Sdelete_window); | |
7228 | defsubr (&Sset_window_buffer); | |
7229 | defsubr (&Sselect_window); | |
6b61353c | 7230 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7231 | defsubr (&Ssplit_window); |
7232 | defsubr (&Senlarge_window); | |
7233 | defsubr (&Sshrink_window); | |
0d384044 | 7234 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7235 | defsubr (&Sscroll_up); |
7236 | defsubr (&Sscroll_down); | |
7237 | defsubr (&Sscroll_left); | |
7238 | defsubr (&Sscroll_right); | |
ccd0664b | 7239 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7240 | defsubr (&Sscroll_other_window); |
fa832261 | 7241 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7242 | defsubr (&Srecenter); |
81fe0836 | 7243 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7244 | defsubr (&Smove_to_window_line); |
7245 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7246 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7247 | defsubr (&Sset_window_configuration); |
7248 | defsubr (&Scurrent_window_configuration); | |
7249 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7250 | defsubr (&Swindow_tree); |
5500c422 GM |
7251 | defsubr (&Sset_window_margins); |
7252 | defsubr (&Swindow_margins); | |
949cf20f KS |
7253 | defsubr (&Sset_window_fringes); |
7254 | defsubr (&Swindow_fringes); | |
7255 | defsubr (&Sset_window_scroll_bars); | |
7256 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7257 | defsubr (&Swindow_vscroll); |
7258 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7259 | defsubr (&Scompare_window_configurations); |
67492200 | 7260 | defsubr (&Swindow_list); |
cfbb2395 JB |
7261 | defsubr (&Swindow_parameters); |
7262 | defsubr (&Swindow_parameter); | |
7263 | defsubr (&Sset_window_parameter); | |
7264 | ||
7ab12479 JB |
7265 | } |
7266 | ||
dfcf069d | 7267 | void |
7ab12479 JB |
7268 | keys_of_window () |
7269 | { | |
7270 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7271 | initial_define_key (control_x_map, '2', "split-window"); | |
7272 | initial_define_key (control_x_map, '0', "delete-window"); | |
7273 | initial_define_key (control_x_map, 'o', "other-window"); | |
7274 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7275 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7276 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7277 | ||
7278 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7279 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7280 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7281 | ||
7282 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7283 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7284 | } | |
6b61353c KH |
7285 | |
7286 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7287 | (do not change this comment) */ |