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, | |
23fe745a | 198 | doc: /* Return t if OBJECT is a window. */) |
fdb82f93 | 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, |
23fe745a | 206 | doc: /* Return 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, |
23fe745a | 287 | doc: /* Return non-nil if WINDOW is a minibuffer window. |
6b61353c | 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, | |
8fef9de1 MR |
508 | doc: /* Return the number of lines in WINDOW. |
509 | WINDOW defaults to the selected window. | |
510 | ||
511 | The return value includes WINDOW's mode line and header line, if any. */) | |
fdb82f93 | 512 | (window) |
7ab12479 JB |
513 | Lisp_Object window; |
514 | { | |
6b61353c | 515 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
516 | } |
517 | ||
518 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 | 519 | doc: /* Return the number of display columns in WINDOW. |
d653c8cc MR |
520 | WINDOW defaults to the selected window. |
521 | ||
522 | Note: The return value is the number of columns available for text in | |
523 | WINDOW. If you want to find out how many columns WINDOW takes up, use | |
524 | (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
fdb82f93 | 525 | (window) |
7ab12479 JB |
526 | Lisp_Object window; |
527 | { | |
6b61353c | 528 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
529 | } |
530 | ||
35ea56c9 MR |
531 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
532 | doc: /* Return t if WINDOW is as wide as its frame. | |
533 | WINDOW defaults to the selected window. */) | |
534 | (window) | |
535 | Lisp_Object window; | |
536 | { | |
537 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
538 | } | |
539 | ||
7ab12479 | 540 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
541 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
542 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 543 | (window) |
7ab12479 JB |
544 | Lisp_Object window; |
545 | { | |
546 | return decode_window (window)->hscroll; | |
547 | } | |
548 | ||
549 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 550 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 551 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
552 | |
553 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 554 | window so that the location of point moves off-window. */) |
fdb82f93 | 555 | (window, ncol) |
ea68264b | 556 | Lisp_Object window, ncol; |
7ab12479 | 557 | { |
ea68264b GM |
558 | struct window *w = decode_window (window); |
559 | int hscroll; | |
7ab12479 | 560 | |
b7826503 | 561 | CHECK_NUMBER (ncol); |
ea68264b | 562 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 563 | |
ea68264b GM |
564 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
565 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 566 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 567 | |
c67fa410 | 568 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
569 | return ncol; |
570 | } | |
571 | ||
190eb263 RS |
572 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
573 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 574 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 575 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
576 | See `set-window-redisplay-end-trigger' for more information. */) |
577 | (window) | |
190eb263 RS |
578 | Lisp_Object window; |
579 | { | |
580 | return decode_window (window)->redisplay_end_trigger; | |
581 | } | |
582 | ||
583 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
584 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
585 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
586 | VALUE should be a buffer position (typically a marker) or nil. | |
587 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
588 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
589 | with two arguments: WINDOW, and the end trigger value. | |
590 | Afterwards the end-trigger value is reset to nil. */) | |
591 | (window, value) | |
190eb263 RS |
592 | register Lisp_Object window, value; |
593 | { | |
594 | register struct window *w; | |
595 | ||
596 | w = decode_window (window); | |
597 | w->redisplay_end_trigger = value; | |
598 | return value; | |
599 | } | |
600 | ||
7ab12479 | 601 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
602 | doc: /* Return a list of the edge coordinates of WINDOW. |
603 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
604 | RIGHT is one more than the rightmost column occupied by WINDOW, |
605 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
606 | The edges include the space used by the window's scroll bar, | |
607 | display margins, fringes, header line, and mode line, if it has them. | |
608 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 609 | (window) |
7ab12479 JB |
610 | Lisp_Object window; |
611 | { | |
6b61353c | 612 | register struct window *w = decode_any_window (window); |
7ab12479 | 613 | |
949cf20f KS |
614 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
615 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
616 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
617 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
618 | Qnil)))); | |
7ab12479 JB |
619 | } |
620 | ||
c99a9eb3 RS |
621 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
622 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
623 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
624 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
625 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
626 | The pixel edges include the space used by the window's scroll bar, | |
627 | display margins, fringes, header line, and mode line, if it has them. | |
628 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
629 | (window) | |
630 | Lisp_Object window; | |
631 | { | |
6b61353c | 632 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
633 | |
634 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
635 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
636 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
637 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
638 | Qnil)))); | |
639 | } | |
640 | ||
641 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
642 | doc: /* Return a list of the edge coordinates of WINDOW. | |
643 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
644 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
645 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
646 | The inside edges do not include the space used by the window's scroll bar, | |
647 | display margins, fringes, header line, and/or mode line. */) | |
648 | (window) | |
649 | Lisp_Object window; | |
650 | { | |
6b61353c | 651 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
652 | |
653 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
654 | + WINDOW_LEFT_MARGIN_COLS (w) | |
655 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
656 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
657 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 658 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
659 | - WINDOW_RIGHT_MARGIN_COLS (w) |
660 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
661 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
662 | - WINDOW_MODE_LINE_LINES (w))); | |
663 | } | |
664 | ||
665 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 666 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
667 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
668 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
669 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
670 | The inside edges do not include the space used by the window's scroll bar, | |
671 | display margins, fringes, header line, and/or mode line. */) | |
672 | (window) | |
673 | Lisp_Object window; | |
674 | { | |
6b61353c | 675 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
676 | |
677 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
678 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
679 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
680 | make_number (WINDOW_TOP_EDGE_Y (w) | |
681 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 682 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
683 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
684 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
685 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
686 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
687 | } | |
688 | ||
fbad6f9a | 689 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 690 | If it is not, return ON_NOTHING; |
d5783c40 JB |
691 | if it is in the window's text area, |
692 | set *x and *y to its location relative to the upper left corner | |
693 | of the window, and | |
341f3858 KS |
694 | return ON_TEXT; |
695 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 696 | if it is on the border between the window and its right sibling, |
341f3858 | 697 | return ON_VERTICAL_BORDER. |
6487f669 RS |
698 | if it is on a scroll bar, |
699 | return ON_SCROLL_BAR. | |
341f3858 | 700 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 701 | if it is in left or right fringe of the window, |
341f3858 KS |
702 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
703 | to window-relative coordinates; | |
49b996e7 | 704 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
705 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
706 | to window-relative coordinates. | |
5500c422 GM |
707 | |
708 | X and Y are frame relative pixel coordinates. */ | |
709 | ||
7442878f | 710 | static enum window_part |
d5783c40 JB |
711 | coordinates_in_window (w, x, y) |
712 | register struct window *w; | |
713 | register int *x, *y; | |
714 | { | |
b0228ace GM |
715 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
716 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 717 | enum window_part part; |
949cf20f KS |
718 | int ux = FRAME_COLUMN_WIDTH (f); |
719 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
720 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
721 | /* The width of the area where the vertical line can be dragged. |
722 | (Between mode lines for instance. */ | |
723 | int grabbable_width = ux; | |
949cf20f | 724 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 725 | |
466539bc EZ |
726 | /* In what's below, we subtract 1 when computing right_x because we |
727 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
728 | if (w->pseudo_window_p) |
729 | { | |
730 | left_x = 0; | |
949cf20f KS |
731 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
732 | top_y = WINDOW_TOP_EDGE_Y (w); | |
733 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
734 | } |
735 | else | |
736 | { | |
949cf20f KS |
737 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
738 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
739 | top_y = WINDOW_TOP_EDGE_Y (w); | |
740 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 741 | } |
37962e60 | 742 | |
949cf20f KS |
743 | /* Outside any interesting row? */ |
744 | if (*y < top_y || *y >= bottom_y) | |
745 | return ON_NOTHING; | |
746 | ||
1cb794ba GM |
747 | /* On the mode line or header line? If it's near the start of |
748 | the mode or header line of window that's has a horizontal | |
749 | sibling, say it's on the vertical line. That's to be able | |
750 | to resize windows horizontally in case we're using toolkit | |
751 | scroll bars. */ | |
b0228ace | 752 | |
1cb794ba | 753 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 754 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 755 | { |
949cf20f KS |
756 | part = ON_MODE_LINE; |
757 | ||
758 | header_vertical_border_check: | |
b0228ace GM |
759 | /* We're somewhere on the mode line. We consider the place |
760 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 761 | as the vertical border. If scroll bars on the left, |
b0228ace | 762 | return the right window. */ |
949cf20f KS |
763 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
764 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 765 | { |
1ea40aa2 | 766 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 767 | { |
3f489dc7 KS |
768 | /* Convert X and Y to window relative coordinates. |
769 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
770 | *x = max (0, *x - x0); |
771 | *y -= top_y; | |
772 | return ON_VERTICAL_BORDER; | |
773 | } | |
b0228ace | 774 | } |
79fd290e | 775 | else |
b0228ace | 776 | { |
1ea40aa2 | 777 | if (eabs (*x - x1) < grabbable_width) |
f8c62b70 | 778 | { |
3f489dc7 KS |
779 | /* Convert X and Y to window relative coordinates. |
780 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
781 | *x = min (x1, *x) - x0; |
782 | *y -= top_y; | |
783 | return ON_VERTICAL_BORDER; | |
784 | } | |
b0228ace | 785 | } |
949cf20f | 786 | |
cb639b8f KS |
787 | if (*x < x0 || *x >= x1) |
788 | return ON_NOTHING; | |
789 | ||
a5303820 KS |
790 | /* Convert X and Y to window relative coordinates. |
791 | Mode line starts at left edge of window. */ | |
792 | *x -= x0; | |
793 | *y -= top_y; | |
949cf20f | 794 | return part; |
b0228ace | 795 | } |
949cf20f KS |
796 | |
797 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 798 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 799 | { |
949cf20f KS |
800 | part = ON_HEADER_LINE; |
801 | goto header_vertical_border_check; | |
1cb794ba | 802 | } |
949cf20f | 803 | |
cb639b8f KS |
804 | if (*x < x0 || *x >= x1) |
805 | return ON_NOTHING; | |
806 | ||
949cf20f KS |
807 | /* Outside any interesting column? */ |
808 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
809 | { |
810 | *y -= top_y; | |
811 | return ON_SCROLL_BAR; | |
812 | } | |
949cf20f KS |
813 | |
814 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
815 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 816 | |
949cf20f KS |
817 | text_left = window_box_left (w, TEXT_AREA); |
818 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
819 | ||
820 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 821 | { |
447e9da0 | 822 | if (!w->pseudo_window_p |
949cf20f | 823 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 824 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 825 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 826 | { |
3f489dc7 KS |
827 | /* Convert X and Y to window relative coordinates. |
828 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
829 | *x = min (right_x, *x) - left_x; |
830 | *y -= top_y; | |
831 | return ON_VERTICAL_BORDER; | |
832 | } | |
fbad6f9a | 833 | } |
447e9da0 GM |
834 | else |
835 | { | |
836 | /* Need to say "*x > right_x" rather than >=, since on character | |
837 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
838 | if (!w->pseudo_window_p |
839 | && !WINDOW_RIGHTMOST_P (w) | |
840 | && *x > right_x - ux) | |
b0228ace GM |
841 | { |
842 | /* On the border on the right side of the window? Assume that | |
843 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
844 | *x = min (right_x, *x) - left_x; |
845 | *y -= top_y; | |
949cf20f | 846 | return ON_VERTICAL_BORDER; |
b0228ace | 847 | } |
447e9da0 | 848 | } |
b0228ace | 849 | |
949cf20f KS |
850 | if (*x < text_left) |
851 | { | |
852 | if (lmargin_width > 0 | |
853 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
854 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
855 | : (*x < left_x + lmargin_width))) | |
a5303820 | 856 | { |
6b61353c | 857 | *x -= left_x; |
a5303820 KS |
858 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
859 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
860 | *y -= top_y; | |
861 | return ON_LEFT_MARGIN; | |
862 | } | |
949cf20f KS |
863 | |
864 | /* Convert X and Y to window-relative pixel coordinates. */ | |
865 | *x -= left_x; | |
866 | *y -= top_y; | |
867 | return ON_LEFT_FRINGE; | |
868 | } | |
869 | ||
870 | if (*x >= text_right) | |
871 | { | |
872 | if (rmargin_width > 0 | |
873 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
874 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
875 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 876 | { |
66d41723 KS |
877 | *x -= right_x - rmargin_width; |
878 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
879 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
880 | *y -= top_y; |
881 | return ON_RIGHT_MARGIN; | |
882 | } | |
949cf20f KS |
883 | |
884 | /* Convert X and Y to window-relative pixel coordinates. */ | |
885 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
886 | *y -= top_y; | |
887 | return ON_RIGHT_FRINGE; | |
888 | } | |
889 | ||
890 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 891 | *x -= text_left; |
949cf20f KS |
892 | *y -= top_y; |
893 | return ON_TEXT; | |
d5783c40 JB |
894 | } |
895 | ||
b0228ace | 896 | |
d5783c40 | 897 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
898 | Scoordinates_in_window_p, 2, 2, 0, |
899 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
900 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
901 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 902 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
903 | frame. |
904 | If COORDINATES are in the text portion of WINDOW, | |
905 | the coordinates relative to the window are returned. | |
906 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
907 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
908 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
909 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 910 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
911 | `vertical-line' is returned. |
912 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
913 | or `right-margin' is returned. */) | |
fdb82f93 | 914 | (coordinates, window) |
d5783c40 JB |
915 | register Lisp_Object coordinates, window; |
916 | { | |
5500c422 GM |
917 | struct window *w; |
918 | struct frame *f; | |
d5783c40 | 919 | int x, y; |
5500c422 | 920 | Lisp_Object lx, ly; |
d5783c40 | 921 | |
6b61353c | 922 | CHECK_WINDOW (window); |
5500c422 GM |
923 | w = XWINDOW (window); |
924 | f = XFRAME (w->frame); | |
b7826503 | 925 | CHECK_CONS (coordinates); |
5500c422 GM |
926 | lx = Fcar (coordinates); |
927 | ly = Fcdr (coordinates); | |
b7826503 PJ |
928 | CHECK_NUMBER_OR_FLOAT (lx); |
929 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
930 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
931 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
932 | |
933 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 934 | { |
7442878f | 935 | case ON_NOTHING: |
d5783c40 JB |
936 | return Qnil; |
937 | ||
7442878f GM |
938 | case ON_TEXT: |
939 | /* X and Y are now window relative pixel coordinates. Convert | |
940 | them to canonical char units before returning them. */ | |
949cf20f KS |
941 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
942 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 943 | |
7442878f | 944 | case ON_MODE_LINE: |
d5783c40 | 945 | return Qmode_line; |
37962e60 | 946 | |
7442878f | 947 | case ON_VERTICAL_BORDER: |
e5d77022 | 948 | return Qvertical_line; |
d5783c40 | 949 | |
7442878f | 950 | case ON_HEADER_LINE: |
045dee35 | 951 | return Qheader_line; |
5500c422 | 952 | |
7442878f GM |
953 | case ON_LEFT_FRINGE: |
954 | return Qleft_fringe; | |
177c0ea7 | 955 | |
7442878f GM |
956 | case ON_RIGHT_FRINGE: |
957 | return Qright_fringe; | |
fbad6f9a | 958 | |
49b996e7 GM |
959 | case ON_LEFT_MARGIN: |
960 | return Qleft_margin; | |
177c0ea7 | 961 | |
49b996e7 GM |
962 | case ON_RIGHT_MARGIN: |
963 | return Qright_margin; | |
964 | ||
6487f669 RS |
965 | case ON_SCROLL_BAR: |
966 | /* Historically we are supposed to return nil in this case. */ | |
967 | return Qnil; | |
968 | ||
d5783c40 JB |
969 | default: |
970 | abort (); | |
971 | } | |
972 | } | |
973 | ||
67492200 GM |
974 | |
975 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
976 | Check if window W contains coordinates specified by USER_DATA which |
977 | is actually a pointer to a struct check_window_data CW. | |
978 | ||
979 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
980 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 981 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
982 | zero from this function to stop iterating over windows. */ |
983 | ||
984 | struct check_window_data | |
985 | { | |
986 | Lisp_Object *window; | |
341f3858 KS |
987 | int *x, *y; |
988 | enum window_part *part; | |
f95464e4 | 989 | }; |
67492200 GM |
990 | |
991 | static int | |
f95464e4 | 992 | check_window_containing (w, user_data) |
67492200 | 993 | struct window *w; |
f95464e4 | 994 | void *user_data; |
67492200 | 995 | { |
f95464e4 | 996 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
997 | enum window_part found; |
998 | int continue_p = 1; | |
67492200 | 999 | |
f95464e4 | 1000 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1001 | if (found != ON_NOTHING) |
67492200 | 1002 | { |
341f3858 | 1003 | *cw->part = found; |
f95464e4 | 1004 | XSETWINDOW (*cw->window, w); |
7442878f | 1005 | continue_p = 0; |
67492200 | 1006 | } |
177c0ea7 | 1007 | |
7442878f | 1008 | return continue_p; |
67492200 GM |
1009 | } |
1010 | ||
1011 | ||
5500c422 | 1012 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1013 | return it as a Lisp_Object. |
1014 | ||
1015 | If X, Y is on one of the window's special `window_part' elements, | |
1016 | set *PART to the id of that element, and return X and Y converted | |
1017 | to window relative coordinates in WX and WY. | |
1018 | ||
341f3858 | 1019 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1020 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1021 | ||
1022 | This function was previously implemented with a loop cycling over | |
1023 | windows with Fnext_window, and starting with the frame's selected | |
1024 | window. It turned out that this doesn't work with an | |
1025 | implementation of next_window using Vwindow_list, because | |
1026 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1027 | tree of F when this function is called asynchronously from | |
1028 | note_mouse_highlight. The original loop didn't terminate in this | |
1029 | case. */ | |
5500c422 | 1030 | |
7ab12479 | 1031 | Lisp_Object |
949cf20f | 1032 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1033 | struct frame *f; |
7ab12479 | 1034 | int x, y; |
341f3858 | 1035 | enum window_part *part; |
949cf20f | 1036 | int *wx, *wy; |
9ea173e8 | 1037 | int tool_bar_p; |
7ab12479 | 1038 | { |
67492200 | 1039 | Lisp_Object window; |
f95464e4 | 1040 | struct check_window_data cw; |
341f3858 KS |
1041 | enum window_part dummy; |
1042 | ||
1043 | if (part == 0) | |
1044 | part = &dummy; | |
5500c422 | 1045 | |
67492200 | 1046 | window = Qnil; |
f95464e4 GM |
1047 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1048 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1049 | |
67492200 GM |
1050 | /* If not found above, see if it's in the tool bar window, if a tool |
1051 | bar exists. */ | |
1052 | if (NILP (window) | |
1053 | && tool_bar_p | |
1054 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1055 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1056 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1057 | != ON_NOTHING)) | |
5500c422 | 1058 | { |
341f3858 | 1059 | *part = ON_TEXT; |
67492200 | 1060 | window = f->tool_bar_window; |
5500c422 | 1061 | } |
37962e60 | 1062 | |
949cf20f KS |
1063 | if (wx) *wx = x; |
1064 | if (wy) *wy = y; | |
1065 | ||
67492200 | 1066 | return window; |
7ab12479 JB |
1067 | } |
1068 | ||
ab17c3f2 | 1069 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1070 | doc: /* Return window containing coordinates X and Y on FRAME. |
1071 | If omitted, FRAME defaults to the currently selected frame. | |
1072 | The top left corner of the frame is considered to be row 0, | |
1073 | column 0. */) | |
1074 | (x, y, frame) | |
1075 | Lisp_Object x, y, frame; | |
7ab12479 | 1076 | { |
5500c422 | 1077 | struct frame *f; |
7ab12479 | 1078 | |
44fa5b1e | 1079 | if (NILP (frame)) |
1ae1a37d | 1080 | frame = selected_frame; |
b7826503 | 1081 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1082 | f = XFRAME (frame); |
7ab12479 | 1083 | |
5500c422 | 1084 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1085 | CHECK_NUMBER_OR_FLOAT (x); |
1086 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1087 | |
177c0ea7 | 1088 | return window_from_coordinates (f, |
2c77cf3b RS |
1089 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1090 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1091 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1092 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1093 | 0, 0, 0, 0); |
7ab12479 JB |
1094 | } |
1095 | ||
1096 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1097 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1098 | WINDOW defaults to the selected window. |
1099 | ||
fdb82f93 PJ |
1100 | For a nonselected window, this is the value point would have |
1101 | if that window were selected. | |
1102 | ||
1103 | Note that, when WINDOW is the selected window and its buffer | |
1104 | is also currently selected, the value returned is the same as (point). | |
1105 | It would be more strictly correct to return the `top-level' value | |
1106 | of point, outside of any save-excursion forms. | |
1107 | But that is hard to define. */) | |
1108 | (window) | |
7ab12479 JB |
1109 | Lisp_Object window; |
1110 | { | |
1111 | register struct window *w = decode_window (window); | |
1112 | ||
1113 | if (w == XWINDOW (selected_window) | |
1114 | && current_buffer == XBUFFER (w->buffer)) | |
1115 | return Fpoint (); | |
1116 | return Fmarker_position (w->pointm); | |
1117 | } | |
1118 | ||
1119 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1120 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1121 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1122 | This is updated by redisplay or by calling `set-window-start'. */) |
1123 | (window) | |
7ab12479 JB |
1124 | Lisp_Object window; |
1125 | { | |
1126 | return Fmarker_position (decode_window (window)->start); | |
1127 | } | |
1128 | ||
8646118f RS |
1129 | /* This is text temporarily removed from the doc string below. |
1130 | ||
fdb82f93 PJ |
1131 | This function returns nil if the position is not currently known. |
1132 | That happens when redisplay is preempted and doesn't finish. | |
1133 | If in that case you want to compute where the end of the window would | |
1134 | have been if redisplay had finished, do this: | |
1135 | (save-excursion | |
1136 | (goto-char (window-start window)) | |
1137 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1138 | (point))") */ |
1139 | ||
478292ed | 1140 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1141 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1142 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1143 | This is updated by redisplay, when it runs to completion. |
1144 | Simply changing the buffer text or setting `window-start' | |
1145 | does not update this value. | |
a0a37a6f LT |
1146 | Return nil if there is no recorded value. \(This can happen if the |
1147 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1148 | If UPDATE is non-nil, compute the up-to-date position |
1149 | if it isn't already recorded. */) | |
1150 | (window, update) | |
478292ed | 1151 | Lisp_Object window, update; |
7ab12479 JB |
1152 | { |
1153 | Lisp_Object value; | |
1154 | struct window *w = decode_window (window); | |
5a41ab94 | 1155 | Lisp_Object buf; |
31790df3 | 1156 | struct buffer *b; |
5a41ab94 RS |
1157 | |
1158 | buf = w->buffer; | |
b7826503 | 1159 | CHECK_BUFFER (buf); |
b3a10345 | 1160 | b = XBUFFER (buf); |
5a41ab94 | 1161 | |
8646118f | 1162 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1163 | /* If we don't know the end position, return nil. |
1164 | The user can compute it with vertical-motion if he wants to. | |
1165 | It would be nicer to do it automatically, | |
1166 | but that's so slow that it would probably bother people. */ | |
1167 | if (NILP (w->window_end_valid)) | |
1168 | return Qnil; | |
8646118f | 1169 | #endif |
7250968e | 1170 | |
478292ed RS |
1171 | if (! NILP (update) |
1172 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1173 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1174 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1175 | && !noninteractive) |
478292ed | 1176 | { |
cbc099e5 GM |
1177 | struct text_pos startp; |
1178 | struct it it; | |
b3a10345 KS |
1179 | struct buffer *old_buffer = NULL; |
1180 | ||
1181 | /* Cannot use Fvertical_motion because that function doesn't | |
1182 | cope with variable-height lines. */ | |
1183 | if (b != current_buffer) | |
1184 | { | |
1185 | old_buffer = current_buffer; | |
1186 | set_buffer_internal (b); | |
1187 | } | |
2d6d9df0 GM |
1188 | |
1189 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1190 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1191 | `-l' containing a call to `rmail' with subsequent other |
1192 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1193 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1194 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1195 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1196 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1197 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1198 | else |
cbc099e5 GM |
1199 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1200 | ||
cbc099e5 GM |
1201 | start_display (&it, w, startp); |
1202 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1203 | if (it.current_y < it.last_visible_y) |
1204 | move_it_past_eol (&it); | |
cbc099e5 | 1205 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1206 | |
99593a9d GM |
1207 | if (old_buffer) |
1208 | set_buffer_internal (old_buffer); | |
478292ed RS |
1209 | } |
1210 | else | |
b3a10345 | 1211 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1212 | |
1213 | return value; | |
1214 | } | |
1215 | ||
1216 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1217 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1218 | Return POS. */) | |
fdb82f93 | 1219 | (window, pos) |
7ab12479 JB |
1220 | Lisp_Object window, pos; |
1221 | { | |
1222 | register struct window *w = decode_window (window); | |
1223 | ||
b7826503 | 1224 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1225 | if (w == XWINDOW (selected_window) |
1226 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1227 | Fgoto_char (pos); |
1228 | else | |
1229 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1230 | |
0685cb3c GM |
1231 | /* We have to make sure that redisplay updates the window to show |
1232 | the new value of point. */ | |
1233 | if (!EQ (window, selected_window)) | |
799417bd | 1234 | ++windows_or_buffers_changed; |
177c0ea7 | 1235 | |
7ab12479 JB |
1236 | return pos; |
1237 | } | |
1238 | ||
1239 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1240 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1241 | WINDOW defaults to the selected window. Return POS. |
1242 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1243 | overriding motion of point in order to display at this exact start. */) | |
fdb82f93 | 1244 | (window, pos, noforce) |
7ab12479 JB |
1245 | Lisp_Object window, pos, noforce; |
1246 | { | |
1247 | register struct window *w = decode_window (window); | |
1248 | ||
b7826503 | 1249 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1250 | set_marker_restricted (w->start, pos, w->buffer); |
1251 | /* this is not right, but much easier than doing what is right. */ | |
1252 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1253 | if (NILP (noforce)) |
7ab12479 JB |
1254 | w->force_start = Qt; |
1255 | w->update_mode_line = Qt; | |
d834a2e9 | 1256 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1257 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1258 | if (!EQ (window, selected_window)) |
1259 | windows_or_buffers_changed++; | |
ce7fae7d | 1260 | |
7ab12479 JB |
1261 | return pos; |
1262 | } | |
1263 | ||
d653c8cc | 1264 | |
7ab12479 | 1265 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1266 | 0, 1, 0, |
1267 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1268 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1269 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1270 | never called with WINDOW as its argument, or the value set by that | |
1271 | function was internally reset since its last call. WINDOW defaults to | |
1272 | the selected window. | |
1273 | ||
1274 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1275 | from displaying another buffer in it. `get-lru-window' and | |
1276 | `get-largest-window' treat dedicated windows specially. | |
1277 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1278 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1279 | ||
1280 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1281 | window, unless that window is "strongly" dedicated to its buffer, that | |
1282 | is the value returned by `window-dedicated-p' is t. */) | |
fdb82f93 | 1283 | (window) |
7ab12479 JB |
1284 | Lisp_Object window; |
1285 | { | |
1286 | return decode_window (window)->dedicated; | |
1287 | } | |
1288 | ||
d207b766 RS |
1289 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1290 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1291 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1292 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1293 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1294 | Return FLAG. |
1295 | ||
7bfac547 MR |
1296 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1297 | from displaying another buffer in it. `get-lru-window' and | |
1298 | `get-largest-window' treat dedicated windows specially. | |
1299 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1300 | `kill-buffer' can delete a dedicated window and the containing | |
1301 | frame. | |
1302 | ||
1303 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1304 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1305 | displayed by a window, unless that window is strongly dedicated to its | |
1306 | buffer. If and when `set-window-buffer' displays another buffer in a | |
1307 | window, it also makes sure that the window is not marked as dedicated. */) | |
d653c8cc MR |
1308 | (window, flag) |
1309 | Lisp_Object window, flag; | |
7ab12479 JB |
1310 | { |
1311 | register struct window *w = decode_window (window); | |
1312 | ||
d653c8cc | 1313 | w->dedicated = flag; |
7ab12479 JB |
1314 | return w->dedicated; |
1315 | } | |
1316 | ||
d653c8cc | 1317 | |
cfbb2395 JB |
1318 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1319 | 0, 1, 0, | |
d653c8cc MR |
1320 | doc: /* Return the parameters of WINDOW and their values. |
1321 | WINDOW defaults to the selected window. The return value is a list of | |
1322 | elements of the form (PARAMETER . VALUE). */) | |
cfbb2395 JB |
1323 | (window) |
1324 | Lisp_Object window; | |
1325 | { | |
927abf37 | 1326 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1327 | } |
1328 | ||
1329 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1330 | 2, 2, 0, | |
d653c8cc MR |
1331 | doc: /* Return WINDOW's value for PARAMETER. |
1332 | WINDOW defaults to the selected window. */) | |
cfbb2395 JB |
1333 | (window, parameter) |
1334 | Lisp_Object window, parameter; | |
1335 | { | |
927abf37 JB |
1336 | Lisp_Object result; |
1337 | ||
1338 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1339 | return CDR_SAFE (result); | |
cfbb2395 JB |
1340 | } |
1341 | ||
cfbb2395 JB |
1342 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1343 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1344 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1345 | WINDOW defaults to the selected window. Return VALUE. */) | |
cfbb2395 JB |
1346 | (window, parameter, value) |
1347 | Lisp_Object window, parameter, value; | |
1348 | { | |
1349 | register struct window *w = decode_window (window); | |
1350 | Lisp_Object old_alist_elt; | |
1351 | ||
1352 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1353 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1354 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1355 | else | |
1356 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1357 | return value; |
cfbb2395 JB |
1358 | } |
1359 | ||
1360 | ||
7ab12479 JB |
1361 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1362 | 0, 1, 0, | |
c85322d0 EZ |
1363 | doc: /* Return the display-table that WINDOW is using. |
1364 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1365 | (window) |
7ab12479 JB |
1366 | Lisp_Object window; |
1367 | { | |
1368 | return decode_window (window)->display_table; | |
1369 | } | |
1370 | ||
5500c422 GM |
1371 | /* Get the display table for use on window W. This is either W's |
1372 | display table or W's buffer's display table. Ignore the specified | |
1373 | tables if they are not valid; if no valid table is specified, | |
1374 | return 0. */ | |
7ab12479 | 1375 | |
319315f1 | 1376 | struct Lisp_Char_Table * |
7ab12479 JB |
1377 | window_display_table (w) |
1378 | struct window *w; | |
1379 | { | |
c756cdbe GM |
1380 | struct Lisp_Char_Table *dp = NULL; |
1381 | ||
1382 | if (DISP_TABLE_P (w->display_table)) | |
1383 | dp = XCHAR_TABLE (w->display_table); | |
1384 | else if (BUFFERP (w->buffer)) | |
1385 | { | |
1386 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1387 | |
c756cdbe GM |
1388 | if (DISP_TABLE_P (b->display_table)) |
1389 | dp = XCHAR_TABLE (b->display_table); | |
1390 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1391 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1392 | } | |
171d003c | 1393 | |
c756cdbe | 1394 | return dp; |
7ab12479 JB |
1395 | } |
1396 | ||
3a2712f9 | 1397 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1398 | doc: /* Set WINDOW's display-table to TABLE. */) |
1399 | (window, table) | |
7ab12479 JB |
1400 | register Lisp_Object window, table; |
1401 | { | |
1402 | register struct window *w; | |
7ab12479 JB |
1403 | |
1404 | w = decode_window (window); | |
1405 | w->display_table = table; | |
1406 | return table; | |
1407 | } | |
1408 | \f | |
1409 | /* Record info on buffer window w is displaying | |
1410 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1411 | static void |
7ab12479 JB |
1412 | unshow_buffer (w) |
1413 | register struct window *w; | |
1414 | { | |
12cae7c0 | 1415 | Lisp_Object buf; |
b73ea88e | 1416 | struct buffer *b; |
7ab12479 | 1417 | |
12cae7c0 | 1418 | buf = w->buffer; |
b73ea88e RS |
1419 | b = XBUFFER (buf); |
1420 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1421 | abort (); |
1422 | ||
573f41ab | 1423 | #if 0 |
7ab12479 JB |
1424 | if (w == XWINDOW (selected_window) |
1425 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1426 | /* Do this except when the selected window's buffer | |
1427 | is being removed from some other window. */ | |
573f41ab RS |
1428 | #endif |
1429 | /* last_window_start records the start position that this buffer | |
1430 | had in the last window to be disconnected from it. | |
1431 | Now that this statement is unconditional, | |
1432 | it is possible for the buffer to be displayed in the | |
1433 | selected window, while last_window_start reflects another | |
1434 | window which was recently showing the same buffer. | |
1435 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1436 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1437 | |
1438 | /* Point in the selected window's buffer | |
1439 | is actually stored in that buffer, and the window's pointm isn't used. | |
1440 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1441 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1442 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1443 | && !(WINDOWP (b->last_selected_window) |
1444 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1445 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1446 | temp_set_point_both (b, |
1447 | clip_to_bounds (BUF_BEGV (b), | |
1448 | XMARKER (w->pointm)->charpos, | |
1449 | BUF_ZV (b)), | |
1450 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1451 | marker_byte_position (w->pointm), | |
1452 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1453 | |
8801a864 KR |
1454 | if (WINDOWP (b->last_selected_window) |
1455 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1456 | b->last_selected_window = Qnil; |
7ab12479 JB |
1457 | } |
1458 | ||
1459 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1460 | static void |
7ab12479 JB |
1461 | replace_window (old, replacement) |
1462 | Lisp_Object old, replacement; | |
1463 | { | |
1464 | register Lisp_Object tem; | |
1465 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1466 | ||
44fa5b1e JB |
1467 | /* If OLD is its frame's root_window, then replacement is the new |
1468 | root_window for that frame. */ | |
7ab12479 | 1469 | |
7f4161e0 | 1470 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1471 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1472 | |
949cf20f KS |
1473 | p->left_col = o->left_col; |
1474 | p->top_line = o->top_line; | |
1475 | p->total_cols = o->total_cols; | |
1476 | p->total_lines = o->total_lines; | |
5500c422 GM |
1477 | p->desired_matrix = p->current_matrix = 0; |
1478 | p->vscroll = 0; | |
1479 | bzero (&p->cursor, sizeof (p->cursor)); | |
1480 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1481 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1482 | p->phys_cursor_type = -1; | |
4b26579e | 1483 | p->phys_cursor_width = -1; |
5500c422 GM |
1484 | p->must_be_updated_p = 0; |
1485 | p->pseudo_window_p = 0; | |
1486 | XSETFASTINT (p->window_end_vpos, 0); | |
1487 | XSETFASTINT (p->window_end_pos, 0); | |
1488 | p->window_end_valid = Qnil; | |
7bbb5782 | 1489 | p->frozen_window_start_p = 0; |
949cf20f | 1490 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1491 | |
1492 | p->next = tem = o->next; | |
265a9e55 | 1493 | if (!NILP (tem)) |
7ab12479 JB |
1494 | XWINDOW (tem)->prev = replacement; |
1495 | ||
1496 | p->prev = tem = o->prev; | |
265a9e55 | 1497 | if (!NILP (tem)) |
7ab12479 JB |
1498 | XWINDOW (tem)->next = replacement; |
1499 | ||
1500 | p->parent = tem = o->parent; | |
265a9e55 | 1501 | if (!NILP (tem)) |
7ab12479 JB |
1502 | { |
1503 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1504 | XWINDOW (tem)->vchild = replacement; | |
1505 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1506 | XWINDOW (tem)->hchild = replacement; | |
1507 | } | |
1508 | ||
1509 | /*** Here, if replacement is a vertical combination | |
1510 | and so is its new parent, we should make replacement's | |
1511 | children be children of that parent instead. ***/ | |
1512 | } | |
1513 | ||
1514 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
8fef9de1 MR |
1515 | doc: /* Remove WINDOW from its frame. |
1516 | WINDOW defaults to the selected window. Return nil. | |
1517 | Signal an error when WINDOW is the only window on its frame. */) | |
fdb82f93 | 1518 | (window) |
7ab12479 | 1519 | register Lisp_Object window; |
543f5fb1 | 1520 | { |
eeca6f6f SM |
1521 | struct frame *f; |
1522 | if (NILP (window)) | |
1523 | window = selected_window; | |
1524 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); | |
543f5fb1 RS |
1525 | delete_window (window); |
1526 | ||
eeca6f6f | 1527 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1528 | |
1529 | return Qnil; | |
1530 | } | |
1531 | ||
5e14b1fc | 1532 | void |
543f5fb1 RS |
1533 | delete_window (window) |
1534 | register Lisp_Object window; | |
7ab12479 JB |
1535 | { |
1536 | register Lisp_Object tem, parent, sib; | |
1537 | register struct window *p; | |
1538 | register struct window *par; | |
951f9df5 | 1539 | struct frame *f; |
7ab12479 | 1540 | |
605be8af JB |
1541 | /* Because this function is called by other C code on non-leaf |
1542 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1543 | so we can't decode_window here. */ | |
eeca6f6f | 1544 | CHECK_WINDOW (window); |
7ab12479 | 1545 | p = XWINDOW (window); |
605be8af | 1546 | |
0d384044 | 1547 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1548 | if (NILP (p->buffer) |
1549 | && NILP (p->hchild) | |
1550 | && NILP (p->vchild)) | |
296b535c | 1551 | return; |
605be8af | 1552 | |
7ab12479 | 1553 | parent = p->parent; |
265a9e55 | 1554 | if (NILP (parent)) |
7ab12479 JB |
1555 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1556 | par = XWINDOW (parent); | |
1557 | ||
1558 | windows_or_buffers_changed++; | |
67492200 | 1559 | Vwindow_list = Qnil; |
951f9df5 GM |
1560 | f = XFRAME (WINDOW_FRAME (p)); |
1561 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1562 | |
605be8af JB |
1563 | /* Are we trying to delete any frame's selected window? */ |
1564 | { | |
192c3131 | 1565 | Lisp_Object swindow, pwindow; |
605be8af | 1566 | |
0def0403 RS |
1567 | /* See if the frame's selected window is either WINDOW |
1568 | or any subwindow of it, by finding all that window's parents | |
1569 | and comparing each one with WINDOW. */ | |
192c3131 | 1570 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1571 | |
192c3131 | 1572 | while (1) |
0def0403 | 1573 | { |
192c3131 RS |
1574 | pwindow = swindow; |
1575 | while (!NILP (pwindow)) | |
1576 | { | |
1577 | if (EQ (window, pwindow)) | |
1578 | break; | |
1579 | pwindow = XWINDOW (pwindow)->parent; | |
1580 | } | |
1581 | ||
1582 | /* If the window being deleted is not a parent of SWINDOW, | |
1583 | then SWINDOW is ok as the new selected window. */ | |
1584 | if (!EQ (window, pwindow)) | |
0def0403 | 1585 | break; |
192c3131 | 1586 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1587 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1588 | |
1589 | /* If we get back to the frame's selected window, | |
1590 | it means there was no acceptable alternative, | |
1591 | so we cannot delete. */ | |
1592 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1593 | error ("Cannot delete window"); | |
0def0403 RS |
1594 | } |
1595 | ||
192c3131 RS |
1596 | /* If we need to change SWINDOW, do it. */ |
1597 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1598 | { |
605be8af JB |
1599 | /* If we're about to delete the selected window on the |
1600 | selected frame, then we should use Fselect_window to select | |
1601 | the new window. On the other hand, if we're about to | |
1602 | delete the selected window on any other frame, we shouldn't do | |
1603 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1604 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1605 | Fselect_window (swindow, Qnil); |
605be8af | 1606 | else |
192c3131 | 1607 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1608 | } |
1609 | } | |
7ab12479 | 1610 | |
0d384044 RS |
1611 | /* Now we know we can delete this one. */ |
1612 | window_deletion_count++; | |
1613 | ||
7ab12479 JB |
1614 | tem = p->buffer; |
1615 | /* tem is null for dummy parent windows | |
1616 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1617 | if (!NILP (tem)) |
7ab12479 JB |
1618 | { |
1619 | unshow_buffer (p); | |
2d0834cc SM |
1620 | unchain_marker (XMARKER (p->pointm)); |
1621 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1622 | } |
1623 | ||
05e71564 GM |
1624 | /* Free window glyph matrices. It is sure that they are allocated |
1625 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1626 | events and other events that access glyph matrices are not | |
1627 | processed while we are changing them. */ | |
1628 | BLOCK_INPUT; | |
951f9df5 | 1629 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1630 | |
7ab12479 | 1631 | tem = p->next; |
265a9e55 | 1632 | if (!NILP (tem)) |
7ab12479 JB |
1633 | XWINDOW (tem)->prev = p->prev; |
1634 | ||
1635 | tem = p->prev; | |
265a9e55 | 1636 | if (!NILP (tem)) |
7ab12479 JB |
1637 | XWINDOW (tem)->next = p->next; |
1638 | ||
1639 | if (EQ (window, par->hchild)) | |
1640 | par->hchild = p->next; | |
1641 | if (EQ (window, par->vchild)) | |
1642 | par->vchild = p->next; | |
1643 | ||
1644 | /* Find one of our siblings to give our space to. */ | |
1645 | sib = p->prev; | |
265a9e55 | 1646 | if (NILP (sib)) |
7ab12479 JB |
1647 | { |
1648 | /* If p gives its space to its next sibling, that sibling needs | |
1649 | to have its top/left side pulled back to where p's is. | |
1650 | set_window_{height,width} will re-position the sibling's | |
1651 | children. */ | |
1652 | sib = p->next; | |
949cf20f KS |
1653 | XWINDOW (sib)->top_line = p->top_line; |
1654 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1655 | } |
1656 | ||
1657 | /* Stretch that sibling. */ | |
265a9e55 | 1658 | if (!NILP (par->vchild)) |
7ab12479 | 1659 | set_window_height (sib, |
949cf20f | 1660 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1661 | 1); |
265a9e55 | 1662 | if (!NILP (par->hchild)) |
7ab12479 | 1663 | set_window_width (sib, |
949cf20f | 1664 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1665 | 1); |
1666 | ||
1667 | /* If parent now has only one child, | |
1668 | put the child into the parent's place. */ | |
7ab12479 | 1669 | tem = par->hchild; |
265a9e55 | 1670 | if (NILP (tem)) |
7ab12479 | 1671 | tem = par->vchild; |
5494d7bc | 1672 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1673 | replace_window (parent, tem); |
5494d7bc JD |
1674 | par = XWINDOW (tem); |
1675 | } | |
605be8af JB |
1676 | |
1677 | /* Since we may be deleting combination windows, we must make sure that | |
1678 | not only p but all its children have been marked as deleted. */ | |
1679 | if (! NILP (p->hchild)) | |
1680 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1681 | else if (! NILP (p->vchild)) | |
1682 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1683 | ||
1684 | /* Mark this window as deleted. */ | |
1685 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1686 | |
5494d7bc JD |
1687 | if (! NILP (par->parent)) |
1688 | par = XWINDOW (par->parent); | |
1689 | ||
1690 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1691 | one of them. */ | |
ae12ecd7 | 1692 | |
5494d7bc JD |
1693 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1694 | { | |
1695 | p = XWINDOW (par->vchild); | |
1696 | par->vchild = p->vchild; | |
1697 | tem = p->vchild; | |
1698 | } | |
1699 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1700 | { | |
1701 | p = XWINDOW (par->hchild); | |
1702 | par->hchild = p->hchild; | |
1703 | tem = p->hchild; | |
1704 | } | |
1705 | else | |
1706 | p = 0; | |
1707 | ||
1708 | if (p) | |
1709 | { | |
1710 | while (! NILP (tem)) { | |
1711 | XWINDOW (tem)->parent = p->parent; | |
1712 | if (NILP (XWINDOW (tem)->next)) | |
1713 | break; | |
1714 | tem = XWINDOW (tem)->next; | |
1715 | } | |
1716 | if (! NILP (tem)) { | |
1717 | /* The next of the v/hchild we are removing is now the next of the | |
1718 | last child for the v/hchild: | |
1719 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1720 | | | |
1721 | -> next3 | |
1722 | After: v/hchild -> next1 -> next2 -> next3 | |
1723 | */ | |
1724 | XWINDOW (tem)->next = p->next; | |
1725 | if (! NILP (p->next)) | |
1726 | XWINDOW (p->next)->prev = tem; | |
1727 | } | |
1728 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1729 | } | |
1730 | ||
1731 | ||
5500c422 | 1732 | /* Adjust glyph matrices. */ |
951f9df5 | 1733 | adjust_glyphs (f); |
05e71564 | 1734 | UNBLOCK_INPUT; |
7ab12479 | 1735 | } |
67492200 GM |
1736 | |
1737 | ||
7ab12479 | 1738 | \f |
67492200 GM |
1739 | /*********************************************************************** |
1740 | Window List | |
1741 | ***********************************************************************/ | |
1742 | ||
f95464e4 GM |
1743 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1744 | pointer. This is a callback function for foreach_window, used in | |
1745 | function window_list. */ | |
67492200 GM |
1746 | |
1747 | static int | |
f95464e4 | 1748 | add_window_to_list (w, user_data) |
67492200 | 1749 | struct window *w; |
f95464e4 | 1750 | void *user_data; |
67492200 | 1751 | { |
f95464e4 | 1752 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1753 | Lisp_Object window; |
1754 | XSETWINDOW (window, w); | |
212116d6 | 1755 | *list = Fcons (window, *list); |
67492200 GM |
1756 | return 1; |
1757 | } | |
1758 | ||
1759 | ||
1760 | /* Return a list of all windows, for use by next_window. If | |
1761 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1762 | list, cache it in Vwindow_list, and return that. */ | |
1763 | ||
1764 | static Lisp_Object | |
1765 | window_list () | |
1766 | { | |
1767 | if (!CONSP (Vwindow_list)) | |
1768 | { | |
1769 | Lisp_Object tail; | |
212116d6 | 1770 | |
67492200 GM |
1771 | Vwindow_list = Qnil; |
1772 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1773 | { |
1774 | Lisp_Object args[2]; | |
1775 | ||
1776 | /* We are visiting windows in canonical order, and add | |
1777 | new windows at the front of args[1], which means we | |
1778 | have to reverse this list at the end. */ | |
1779 | args[1] = Qnil; | |
1780 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1781 | args[0] = Vwindow_list; | |
1782 | args[1] = Fnreverse (args[1]); | |
1783 | Vwindow_list = Fnconc (2, args); | |
1784 | } | |
67492200 | 1785 | } |
177c0ea7 | 1786 | |
67492200 GM |
1787 | return Vwindow_list; |
1788 | } | |
1789 | ||
1790 | ||
118ea242 GM |
1791 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1792 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1793 | |
118ea242 GM |
1794 | MINIBUF t means WINDOW may be minibuffer windows. |
1795 | `lambda' means WINDOW may not be a minibuffer window. | |
1796 | a window means a specific minibuffer window | |
67492200 | 1797 | |
118ea242 GM |
1798 | ALL_FRAMES t means search all frames, |
1799 | nil means search just current frame, | |
1800 | `visible' means search just visible frames, | |
1801 | 0 means search visible and iconified frames, | |
1802 | a window means search the frame that window belongs to, | |
1803 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1804 | |
1805 | static int | |
118ea242 GM |
1806 | candidate_window_p (window, owindow, minibuf, all_frames) |
1807 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1808 | { |
1809 | struct window *w = XWINDOW (window); | |
1810 | struct frame *f = XFRAME (w->frame); | |
1811 | int candidate_p = 1; | |
1812 | ||
1813 | if (!BUFFERP (w->buffer)) | |
1814 | candidate_p = 0; | |
1815 | else if (MINI_WINDOW_P (w) | |
1816 | && (EQ (minibuf, Qlambda) | |
1817 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1818 | { | |
1819 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1820 | If it is a window, consider only that one. */ | |
1821 | candidate_p = 0; | |
1822 | } | |
118ea242 GM |
1823 | else if (EQ (all_frames, Qt)) |
1824 | candidate_p = 1; | |
67492200 | 1825 | else if (NILP (all_frames)) |
118ea242 GM |
1826 | { |
1827 | xassert (WINDOWP (owindow)); | |
1828 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1829 | } | |
67492200 GM |
1830 | else if (EQ (all_frames, Qvisible)) |
1831 | { | |
1832 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1833 | candidate_p = FRAME_VISIBLE_P (f) |
1834 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1835 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1836 | ||
67492200 GM |
1837 | } |
1838 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1839 | { | |
1840 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1841 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1842 | #ifdef HAVE_X_WINDOWS | |
1843 | /* Yuck!! If we've just created the frame and the | |
1844 | window-manager requested the user to place it | |
1845 | manually, the window may still not be considered | |
1846 | `visible'. I'd argue it should be at least | |
1847 | something like `iconified', but don't know how to do | |
1848 | that yet. --Stef */ | |
1849 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1850 | && !f->output_data.x->has_been_visible) | |
1851 | #endif | |
de509a60 SM |
1852 | ) |
1853 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1854 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1855 | } |
67492200 GM |
1856 | else if (WINDOWP (all_frames)) |
1857 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1858 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1859 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1860 | else if (FRAMEP (all_frames)) |
1861 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1862 | |
1863 | return candidate_p; | |
1864 | } | |
1865 | ||
1866 | ||
1867 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1868 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1869 | ALL_FRAMES. */ | |
1870 | ||
1871 | static void | |
1872 | decode_next_window_args (window, minibuf, all_frames) | |
1873 | Lisp_Object *window, *minibuf, *all_frames; | |
1874 | { | |
1875 | if (NILP (*window)) | |
1876 | *window = selected_window; | |
1877 | else | |
b7826503 | 1878 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1879 | |
67492200 GM |
1880 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1881 | does. */ | |
1882 | if (NILP (*minibuf)) | |
1883 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1884 | else if (!EQ (*minibuf, Qt)) | |
1885 | *minibuf = Qlambda; | |
177c0ea7 | 1886 | |
67492200 GM |
1887 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1888 | => count none of them, or a specific minibuffer window (the | |
1889 | active one) to count. */ | |
1890 | ||
1891 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1892 | if (NILP (*all_frames)) | |
1893 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1894 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1895 | : Qnil); | |
1896 | else if (EQ (*all_frames, Qvisible)) | |
1897 | ; | |
0f8fe9a2 | 1898 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1899 | ; |
1900 | else if (FRAMEP (*all_frames)) | |
1901 | ; | |
1902 | else if (!EQ (*all_frames, Qt)) | |
1903 | *all_frames = Qnil; | |
177c0ea7 | 1904 | |
67492200 GM |
1905 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1906 | search just current frame, `visible' meaning search just visible | |
1907 | frames, 0 meaning search visible and iconified frames, or a | |
1908 | window, meaning search the frame that window belongs to, or a | |
1909 | frame, meaning consider windows on that frame, only. */ | |
1910 | } | |
1911 | ||
1912 | ||
ab6d1131 | 1913 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
1914 | of windows. NEXT_P non-zero means return the next window. See the |
1915 | documentation string of next-window for the meaning of MINIBUF and | |
1916 | ALL_FRAMES. */ | |
1917 | ||
1918 | static Lisp_Object | |
1919 | next_window (window, minibuf, all_frames, next_p) | |
1920 | Lisp_Object window, minibuf, all_frames; | |
1921 | int next_p; | |
1922 | { | |
1923 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1924 | |
67492200 GM |
1925 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1926 | return the first window on the frame. */ | |
1927 | if (FRAMEP (all_frames) | |
1928 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1929 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1930 | |
212116d6 | 1931 | if (next_p) |
67492200 GM |
1932 | { |
1933 | Lisp_Object list; | |
177c0ea7 | 1934 | |
67492200 GM |
1935 | /* Find WINDOW in the list of all windows. */ |
1936 | list = Fmemq (window, window_list ()); | |
1937 | ||
1938 | /* Scan forward from WINDOW to the end of the window list. */ | |
1939 | if (CONSP (list)) | |
1940 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1941 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1942 | break; |
1943 | ||
1944 | /* Scan from the start of the window list up to WINDOW. */ | |
1945 | if (!CONSP (list)) | |
1946 | for (list = Vwindow_list; | |
1947 | CONSP (list) && !EQ (XCAR (list), window); | |
1948 | list = XCDR (list)) | |
118ea242 | 1949 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1950 | break; |
1951 | ||
1952 | if (CONSP (list)) | |
1953 | window = XCAR (list); | |
1954 | } | |
1955 | else | |
1956 | { | |
1957 | Lisp_Object candidate, list; | |
177c0ea7 | 1958 | |
67492200 GM |
1959 | /* Scan through the list of windows for candidates. If there are |
1960 | candidate windows in front of WINDOW, the last one of these | |
1961 | is the one we want. If there are candidates following WINDOW | |
1962 | in the list, again the last one of these is the one we want. */ | |
1963 | candidate = Qnil; | |
1964 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1965 | { | |
1966 | if (EQ (XCAR (list), window)) | |
1967 | { | |
1968 | if (WINDOWP (candidate)) | |
1969 | break; | |
1970 | } | |
118ea242 GM |
1971 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1972 | all_frames)) | |
67492200 GM |
1973 | candidate = XCAR (list); |
1974 | } | |
1975 | ||
1976 | if (WINDOWP (candidate)) | |
1977 | window = candidate; | |
1978 | } | |
1979 | ||
1980 | return window; | |
1981 | } | |
7ab12479 | 1982 | |
7ab12479 | 1983 | |
26f6279d | 1984 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
1985 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
1986 | WINDOW defaults to the selected window. The optional arguments | |
1987 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 1988 | |
ab6d1131 MR |
1989 | MINIBUF t means consider the minibuffer window even if the |
1990 | minibuffer is not active. MINIBUF nil or omitted means consider | |
1991 | the minibuffer window only if the minibuffer is active. Any | |
1992 | other value means do not consider the minibuffer window even if | |
1993 | the minibuffer is active. | |
fdb82f93 PJ |
1994 | |
1995 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
1996 | is active, all windows on all frames that share that minibuffer |
1997 | are considered too. Therefore, if you are using a separate | |
1998 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
1999 | counts, `next-window' considers the windows in the frame from | |
2000 | which you entered the minibuffer, as well as the minibuffer | |
2001 | window. | |
2002 | ||
2003 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
2004 | frame, plus the minibuffer window if specified by the MINIBUF | |
2005 | argument, see above. If the minibuffer counts, consider all | |
2006 | windows on all frames that share that minibuffer too. | |
2007 | ALL-FRAMES t means consider all windows on all existing frames. | |
2008 | ALL-FRAMES `visible' means consider all windows on all visible | |
2009 | frames. | |
2010 | ALL-FRAMES 0 means consider all windows on all visible and | |
2011 | iconified frames. | |
2012 | ALL-FRAMES a frame means consider all windows on that frame only. | |
2013 | Anything else means consider all windows on WINDOW's frame and no | |
2014 | others. | |
fdb82f93 PJ |
2015 | |
2016 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2017 | `next-window' to iterate through the entire cycle of acceptable | |
2018 | windows, eventually ending up back at the window you started with. | |
2019 | `previous-window' traverses the same cycle, in the reverse order. */) | |
2020 | (window, minibuf, all_frames) | |
67492200 | 2021 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2022 | { |
67492200 | 2023 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2024 | } |
2025 | ||
67492200 | 2026 | |
26f6279d | 2027 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
2028 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
2029 | WINDOW defaults to the selected window. The optional arguments | |
2030 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
2031 | For the precise meaning of these arguments see `next-window'. | |
2032 | ||
2033 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2034 | use `previous-window' to iterate through the entire cycle of | |
2035 | acceptable windows, eventually ending up back at the window you | |
2036 | started with. `next-window' traverses the same cycle, in the | |
2037 | reverse order. */) | |
fdb82f93 | 2038 | (window, minibuf, all_frames) |
67492200 | 2039 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2040 | { |
67492200 | 2041 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2042 | } |
2043 | ||
67492200 | 2044 | |
62c07cc7 | 2045 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2046 | doc: /* Select another window in cyclic ordering of windows. |
2047 | COUNT specifies the number of windows to skip, starting with the | |
2048 | selected window, before making the selection. If COUNT is | |
2049 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2050 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2051 | window, so select the selected window. In an interactive call, | |
2052 | COUNT is the numeric prefix argument. Return nil. | |
2053 | ||
2054 | This function uses `next-window' for finding the window to select. | |
2055 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2056 | but the MINIBUF argument of `next-window' is always effectively | |
2057 | nil. */) | |
2058 | (count, all_frames) | |
2059 | Lisp_Object count, all_frames; | |
7ab12479 | 2060 | { |
67492200 GM |
2061 | Lisp_Object window; |
2062 | int i; | |
7ab12479 | 2063 | |
ab6d1131 | 2064 | CHECK_NUMBER (count); |
67492200 | 2065 | window = selected_window; |
177c0ea7 | 2066 | |
ab6d1131 | 2067 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2068 | window = Fnext_window (window, Qnil, all_frames); |
2069 | for (; i < 0; ++i) | |
2070 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2071 | |
14d87dc9 | 2072 | Fselect_window (window, Qnil); |
7ab12479 JB |
2073 | return Qnil; |
2074 | } | |
67492200 GM |
2075 | |
2076 | ||
2077 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2078 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2079 | FRAME nil or omitted means use the selected frame. | |
2080 | WINDOW nil or omitted means use the selected window. | |
2081 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2082 | MINIBUF nil or omitted means include the minibuffer window only | |
2083 | if it's active. | |
2084 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2085 | (frame, minibuf, window) | |
cd2904bd GM |
2086 | Lisp_Object frame, minibuf, window; |
2087 | { | |
cd2904bd | 2088 | if (NILP (window)) |
acc6289a SM |
2089 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2090 | CHECK_WINDOW (window); | |
cd2904bd GM |
2091 | if (NILP (frame)) |
2092 | frame = selected_frame; | |
2093 | ||
2094 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2095 | error ("Window is on a different frame"); | |
2096 | ||
2097 | return window_list_1 (window, minibuf, frame); | |
2098 | } | |
2099 | ||
2100 | ||
ab6d1131 | 2101 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2102 | for `next-window'. */ |
2103 | ||
2104 | static Lisp_Object | |
2105 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2106 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2107 | { |
403de3b4 | 2108 | Lisp_Object tail, list, rest; |
67492200 GM |
2109 | |
2110 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2111 | list = Qnil; | |
177c0ea7 | 2112 | |
67492200 | 2113 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2114 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2115 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2116 | |
403de3b4 RS |
2117 | /* Rotate the list to start with WINDOW. */ |
2118 | list = Fnreverse (list); | |
2119 | rest = Fmemq (window, list); | |
2120 | if (!NILP (rest) && !EQ (rest, list)) | |
2121 | { | |
1725a7c9 | 2122 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2123 | ; |
2124 | XSETCDR (tail, Qnil); | |
2125 | list = nconc2 (rest, list); | |
2126 | } | |
2127 | return list; | |
67492200 GM |
2128 | } |
2129 | ||
2130 | ||
7ab12479 JB |
2131 | \f |
2132 | /* Look at all windows, performing an operation specified by TYPE | |
2133 | with argument OBJ. | |
75d8f668 | 2134 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2135 | Qnil, look at just the selected frame; |
89bca612 | 2136 | Qvisible, look at visible frames; |
75d8f668 | 2137 | a frame, just look at windows on that frame. |
85fe3b5e | 2138 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2139 | |
2140 | enum window_loop | |
2141 | { | |
2142 | WINDOW_LOOP_UNUSED, | |
2143 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2144 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2145 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2146 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2147 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2148 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2149 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2150 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2151 | }; |
2152 | ||
2153 | static Lisp_Object | |
44fa5b1e | 2154 | window_loop (type, obj, mini, frames) |
7ab12479 | 2155 | enum window_loop type; |
118ea242 | 2156 | Lisp_Object obj, frames; |
7ab12479 JB |
2157 | int mini; |
2158 | { | |
118ea242 GM |
2159 | Lisp_Object window, windows, best_window, frame_arg; |
2160 | struct frame *f; | |
ffdc852d | 2161 | struct gcpro gcpro1; |
177c0ea7 | 2162 | |
44fa5b1e JB |
2163 | /* If we're only looping through windows on a particular frame, |
2164 | frame points to that frame. If we're looping through windows | |
2165 | on all frames, frame is 0. */ | |
2166 | if (FRAMEP (frames)) | |
118ea242 | 2167 | f = XFRAME (frames); |
44fa5b1e | 2168 | else if (NILP (frames)) |
118ea242 | 2169 | f = SELECTED_FRAME (); |
7ab12479 | 2170 | else |
118ea242 | 2171 | f = NULL; |
177c0ea7 | 2172 | |
118ea242 | 2173 | if (f) |
89bca612 | 2174 | frame_arg = Qlambda; |
0f8fe9a2 | 2175 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2176 | frame_arg = frames; |
89bca612 RS |
2177 | else if (EQ (frames, Qvisible)) |
2178 | frame_arg = frames; | |
118ea242 GM |
2179 | else |
2180 | frame_arg = Qt; | |
7ab12479 | 2181 | |
89bca612 RS |
2182 | /* frame_arg is Qlambda to stick to one frame, |
2183 | Qvisible to consider all visible frames, | |
2184 | or Qt otherwise. */ | |
2185 | ||
7ab12479 | 2186 | /* Pick a window to start with. */ |
017b2bad | 2187 | if (WINDOWP (obj)) |
118ea242 GM |
2188 | window = obj; |
2189 | else if (f) | |
2190 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2191 | else |
118ea242 | 2192 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2193 | |
cd2904bd | 2194 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2195 | GCPRO1 (windows); |
7ab12479 | 2196 | best_window = Qnil; |
118ea242 | 2197 | |
e67a1dea | 2198 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2199 | { |
118ea242 | 2200 | struct window *w; |
177c0ea7 | 2201 | |
118ea242 GM |
2202 | window = XCAR (windows); |
2203 | w = XWINDOW (window); | |
177c0ea7 | 2204 | |
118ea242 GM |
2205 | /* Note that we do not pay attention here to whether the frame |
2206 | is visible, since Fwindow_list skips non-visible frames if | |
2207 | that is desired, under the control of frame_arg. */ | |
2208 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2209 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2210 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2211 | || (mini && minibuf_level > 0)) |
2212 | switch (type) | |
2213 | { | |
2214 | case GET_BUFFER_WINDOW: | |
118ea242 | 2215 | if (EQ (w->buffer, obj) |
5c204627 RS |
2216 | /* Don't find any minibuffer window |
2217 | except the one that is currently in use. */ | |
118ea242 GM |
2218 | && (MINI_WINDOW_P (w) |
2219 | ? EQ (window, minibuf_window) | |
2220 | : 1)) | |
2221 | { | |
5ddc1b75 GM |
2222 | if (NILP (best_window)) |
2223 | best_window = window; | |
2224 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2225 | /* Prefer to return selected-window. */ |
2226 | RETURN_UNGCPRO (window); | |
2227 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2228 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2229 | best_window = window; |
118ea242 | 2230 | } |
7ab12479 JB |
2231 | break; |
2232 | ||
2233 | case GET_LRU_WINDOW: | |
20b69789 SM |
2234 | /* `obj' is an integer encoding a bitvector. |
2235 | `obj & 1' means consider only full-width windows. | |
2236 | `obj & 2' means consider also dedicated windows. */ | |
2237 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2238 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2239 | /* Minibuffer windows are always ignored. */ |
2240 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2241 | break; |
265a9e55 | 2242 | if (NILP (best_window) |
7ab12479 | 2243 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2244 | > XFASTINT (w->use_time))) |
2245 | best_window = window; | |
7ab12479 JB |
2246 | break; |
2247 | ||
2248 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2249 | if (!EQ (window, obj)) |
2250 | Fdelete_window (window); | |
7ab12479 JB |
2251 | break; |
2252 | ||
2253 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2254 | if (EQ (w->buffer, obj)) |
7ab12479 | 2255 | { |
118ea242 | 2256 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2257 | |
2258 | /* If this window is dedicated, and in a frame of its own, | |
2259 | kill the frame. */ | |
118ea242 GM |
2260 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2261 | && !NILP (w->dedicated) | |
3548e138 | 2262 | && other_visible_frames (f)) |
7ab12479 | 2263 | { |
3548e138 RS |
2264 | /* Skip the other windows on this frame. |
2265 | There might be one, the minibuffer! */ | |
118ea242 GM |
2266 | while (CONSP (XCDR (windows)) |
2267 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2268 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2269 | windows = XCDR (windows); | |
177c0ea7 | 2270 | |
3548e138 | 2271 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2272 | Fdelete_frame (w->frame, Qnil); |
2273 | } | |
2274 | else if (NILP (w->parent)) | |
2275 | { | |
2276 | /* If we're deleting the buffer displayed in the | |
2277 | only window on the frame, find a new buffer to | |
2278 | display there. */ | |
2279 | Lisp_Object buffer; | |
2280 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2281 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2282 | if (EQ (window, selected_window)) |
2283 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2284 | } |
2285 | else | |
118ea242 | 2286 | Fdelete_window (window); |
7ab12479 JB |
2287 | } |
2288 | break; | |
2289 | ||
2290 | case GET_LARGEST_WINDOW: | |
20b69789 | 2291 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2292 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2293 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2294 | break; |
177c0ea7 | 2295 | |
c930dfab | 2296 | if (NILP (best_window)) |
118ea242 | 2297 | best_window = window; |
c930dfab GM |
2298 | else |
2299 | { | |
2300 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2301 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2302 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2303 | best_window = window; |
2304 | } | |
7ab12479 JB |
2305 | } |
2306 | break; | |
2307 | ||
2308 | case UNSHOW_BUFFER: | |
118ea242 | 2309 | if (EQ (w->buffer, obj)) |
7ab12479 | 2310 | { |
118ea242 GM |
2311 | Lisp_Object buffer; |
2312 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2313 | |
7ab12479 | 2314 | /* Find another buffer to show in this window. */ |
118ea242 | 2315 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2316 | |
38ab08d1 RS |
2317 | /* If this window is dedicated, and in a frame of its own, |
2318 | kill the frame. */ | |
118ea242 GM |
2319 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2320 | && !NILP (w->dedicated) | |
38ab08d1 | 2321 | && other_visible_frames (f)) |
45945a7b RS |
2322 | { |
2323 | /* Skip the other windows on this frame. | |
2324 | There might be one, the minibuffer! */ | |
118ea242 GM |
2325 | while (CONSP (XCDR (windows)) |
2326 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2327 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2328 | windows = XCDR (windows); | |
177c0ea7 | 2329 | |
45945a7b | 2330 | /* Now we can safely delete the frame. */ |
118ea242 | 2331 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2332 | } |
a5731348 SM |
2333 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2334 | { | |
2335 | Lisp_Object window; | |
2336 | XSETWINDOW (window, w); | |
2337 | /* If this window is dedicated and not the only window | |
2338 | in its frame, then kill it. */ | |
2339 | Fdelete_window (window); | |
2340 | } | |
38ab08d1 | 2341 | else |
38ab08d1 RS |
2342 | { |
2343 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2344 | w->dedicated = Qnil; |
949cf20f | 2345 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2346 | if (EQ (window, selected_window)) |
2347 | Fset_buffer (w->buffer); | |
38ab08d1 | 2348 | } |
7ab12479 JB |
2349 | } |
2350 | break; | |
3f8ab7bd | 2351 | |
6b61353c KH |
2352 | case REDISPLAY_BUFFER_WINDOWS: |
2353 | if (EQ (w->buffer, obj)) | |
2354 | { | |
2355 | mark_window_display_accurate (window, 0); | |
2356 | w->update_mode_line = Qt; | |
2357 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2358 | ++update_mode_lines; | |
2359 | best_window = window; | |
2360 | } | |
2361 | break; | |
2362 | ||
3f8ab7bd RS |
2363 | /* Check for a window that has a killed buffer. */ |
2364 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2365 | if (! NILP (w->buffer) |
2366 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2367 | abort (); |
118ea242 | 2368 | break; |
6bbd7a29 GM |
2369 | |
2370 | case WINDOW_LOOP_UNUSED: | |
2371 | break; | |
7ab12479 | 2372 | } |
7ab12479 | 2373 | } |
7ab12479 | 2374 | |
118ea242 | 2375 | UNGCPRO; |
7ab12479 | 2376 | return best_window; |
37962e60 | 2377 | } |
605be8af | 2378 | |
3f8ab7bd RS |
2379 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2380 | ||
233a4a2c | 2381 | void |
3f8ab7bd RS |
2382 | check_all_windows () |
2383 | { | |
2384 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2385 | } | |
2386 | ||
3cbb13c8 | 2387 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2388 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2389 | \(LRU means Least Recently Used.) |
2390 | ||
6b61353c | 2391 | Return a full-width window if possible. |
c2755926 | 2392 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2393 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2394 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2395 | If optional argument FRAME is `visible', search all visible frames. |
2396 | If FRAME is 0, search all visible and iconified frames. | |
2397 | If FRAME is t, search all frames. | |
2398 | If FRAME is nil, search only the selected frame. | |
2399 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2400 | (frame, dedicated) |
2401 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2402 | { |
2403 | register Lisp_Object w; | |
2404 | /* First try for a window that is full-width */ | |
20b69789 SM |
2405 | w = window_loop (GET_LRU_WINDOW, |
2406 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2407 | 0, frame); | |
265a9e55 | 2408 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2409 | return w; |
2410 | /* If none of them, try the rest */ | |
20b69789 SM |
2411 | return window_loop (GET_LRU_WINDOW, |
2412 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2413 | 0, frame); | |
7ab12479 JB |
2414 | } |
2415 | ||
3cbb13c8 | 2416 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2417 | doc: /* Return the largest window in area. |
c2755926 | 2418 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2419 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2420 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2421 | If optional argument FRAME is `visible', search all visible frames. |
2422 | If FRAME is 0, search all visible and iconified frames. | |
2423 | If FRAME is t, search all frames. | |
2424 | If FRAME is nil, search only the selected frame. | |
2425 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2426 | (frame, dedicated) |
2427 | Lisp_Object frame, dedicated; | |
7ab12479 | 2428 | { |
20b69789 | 2429 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2430 | frame); |
7ab12479 JB |
2431 | } |
2432 | ||
fec89261 MR |
2433 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
2434 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. | |
2435 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the | |
2436 | current buffer. | |
fdb82f93 PJ |
2437 | If optional argument FRAME is `visible', search all visible frames. |
2438 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2439 | If FRAME is t, search all frames. | |
2440 | If FRAME is nil, search only the selected frame. | |
2441 | If FRAME is a frame, search only that frame. */) | |
fec89261 MR |
2442 | (buffer_or_name, frame) |
2443 | Lisp_Object buffer_or_name, frame; | |
7ab12479 | 2444 | { |
fec89261 MR |
2445 | Lisp_Object buffer; |
2446 | ||
2447 | if (NILP (buffer_or_name)) | |
2448 | buffer = Fcurrent_buffer (); | |
2449 | else | |
2450 | buffer = Fget_buffer (buffer_or_name); | |
2451 | ||
017b2bad | 2452 | if (BUFFERP (buffer)) |
44fa5b1e | 2453 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2454 | else |
2455 | return Qnil; | |
2456 | } | |
2457 | ||
2458 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2459 | 0, 1, "", |
2460 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2461 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
2462 | This function tries to reduce display jumps by keeping the text |
2463 | previously visible in WINDOW in the same place on the frame. Doing this | |
2464 | depends on the value of (window-start WINDOW), so if calling this | |
2465 | function in a program gives strange scrolling, make sure the | |
2466 | window-start value is reasonable when this function is called. */) | |
fdb82f93 | 2467 | (window) |
7ab12479 JB |
2468 | Lisp_Object window; |
2469 | { | |
2470 | struct window *w; | |
00d3d838 | 2471 | int startpos; |
85fe3b5e | 2472 | int top, new_top; |
7ab12479 | 2473 | |
265a9e55 | 2474 | if (NILP (window)) |
7ab12479 JB |
2475 | window = selected_window; |
2476 | else | |
b7826503 | 2477 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2478 | w = XWINDOW (window); |
a2b38b3c | 2479 | |
00d3d838 | 2480 | startpos = marker_position (w->start); |
949cf20f | 2481 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2482 | |
a2b38b3c RS |
2483 | if (MINI_WINDOW_P (w) && top > 0) |
2484 | error ("Can't expand minibuffer to full frame"); | |
2485 | ||
70728a80 | 2486 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2487 | |
00d3d838 KH |
2488 | /* Try to minimize scrolling, by setting the window start to the point |
2489 | will cause the text at the old window start to be at the same place | |
2490 | on the frame. But don't try to do this if the window start is | |
2491 | outside the visible portion (as might happen when the display is | |
2492 | not current, due to typeahead). */ | |
949cf20f | 2493 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2494 | if (new_top != top |
2495 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2496 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2497 | { | |
2498 | struct position pos; | |
2499 | struct buffer *obuf = current_buffer; | |
2500 | ||
2501 | Fset_buffer (w->buffer); | |
2502 | /* This computation used to temporarily move point, but that can | |
2503 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2504 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2505 | |
b73ea88e | 2506 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2507 | w->window_end_valid = Qnil; |
b73ea88e RS |
2508 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2509 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2510 | : Qnil); |
80622eec RS |
2511 | /* We need to do this, so that the window-scroll-functions |
2512 | get called. */ | |
4d047f50 | 2513 | w->optional_new_start = Qt; |
00d3d838 KH |
2514 | |
2515 | set_buffer_internal (obuf); | |
2516 | } | |
5500c422 | 2517 | |
7ab12479 JB |
2518 | return Qnil; |
2519 | } | |
2520 | ||
2521 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
2522 | 0, 2, "bDelete windows on (buffer): ", |
2523 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
2524 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2525 | defaults to the current buffer. | |
2526 | ||
fdb82f93 PJ |
2527 | Optional second argument FRAME controls which frames are affected. |
2528 | If optional argument FRAME is `visible', search all visible frames. | |
2529 | If FRAME is 0, search all visible and iconified frames. | |
2530 | If FRAME is nil, search all frames. | |
2531 | If FRAME is t, search only the selected frame. | |
d653c8cc | 2532 | If FRAME is a frame, search only that frame. |
fec89261 MR |
2533 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
2534 | its frame, that frame is deleted when there are other frames left. */) | |
2535 | (buffer_or_name, frame) | |
2536 | Lisp_Object buffer_or_name, frame; | |
7ab12479 | 2537 | { |
fec89261 MR |
2538 | Lisp_Object buffer; |
2539 | ||
26f6279d JB |
2540 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2541 | expects. */ | |
c520265e RS |
2542 | if (NILP (frame)) |
2543 | frame = Qt; | |
2544 | else if (EQ (frame, Qt)) | |
2545 | frame = Qnil; | |
26f6279d | 2546 | |
fec89261 MR |
2547 | if (NILP (buffer_or_name)) |
2548 | buffer = Fcurrent_buffer (); | |
2549 | else | |
7ab12479 | 2550 | { |
fec89261 | 2551 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2552 | CHECK_BUFFER (buffer); |
7ab12479 | 2553 | } |
177c0ea7 | 2554 | |
fec89261 MR |
2555 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
2556 | ||
7ab12479 JB |
2557 | return Qnil; |
2558 | } | |
2559 | ||
2560 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 2561 | Sreplace_buffer_in_windows, |
fec89261 MR |
2562 | 0, 1, "bReplace buffer in windows: ", |
2563 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
2564 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2565 | defaults to the current buffer. | |
2566 | ||
2567 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
2568 | deleted. If that window is the only window on its frame, that frame is | |
2569 | deleted too when there are other frames left. If there are no other | |
2570 | frames left, some other buffer is displayed in that window. */) | |
2571 | (buffer_or_name) | |
2572 | Lisp_Object buffer_or_name; | |
2573 | { | |
2574 | Lisp_Object buffer; | |
2575 | ||
2576 | if (NILP (buffer_or_name)) | |
2577 | buffer = Fcurrent_buffer (); | |
2578 | else | |
7ab12479 | 2579 | { |
fec89261 | 2580 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2581 | CHECK_BUFFER (buffer); |
7ab12479 | 2582 | } |
fec89261 MR |
2583 | |
2584 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2585 | ||
7ab12479 JB |
2586 | return Qnil; |
2587 | } | |
ff58478b RS |
2588 | |
2589 | /* Replace BUFFER with some other buffer in all windows | |
2590 | of all frames, even those on other keyboards. */ | |
2591 | ||
2592 | void | |
2593 | replace_buffer_in_all_windows (buffer) | |
2594 | Lisp_Object buffer; | |
2595 | { | |
2596 | Lisp_Object tail, frame; | |
2597 | ||
ff58478b RS |
2598 | /* A single call to window_loop won't do the job |
2599 | because it only considers frames on the current keyboard. | |
2600 | So loop manually over frames, and handle each one. */ | |
2601 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2602 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2603 | } |
7ab12479 JB |
2604 | \f |
2605 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2606 | |
2607 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2608 | might crash Emacs. */ | |
5500c422 | 2609 | |
a481b3ea | 2610 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2611 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2612 | |
047aaeb9 MR |
2613 | /* For wp non-zero the total number of columns of window w. Otherwise |
2614 | the total number of lines of w. */ | |
a481b3ea | 2615 | |
047aaeb9 MR |
2616 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2617 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2618 | |
2619 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2620 | minimum allowable size. */ | |
5500c422 | 2621 | |
605be8af | 2622 | void |
a481b3ea | 2623 | check_frame_size (frame, rows, cols) |
605be8af JB |
2624 | FRAME_PTR frame; |
2625 | int *rows, *cols; | |
a481b3ea | 2626 | { |
628df3bf | 2627 | /* For height, we have to see: |
54b8bcb5 RS |
2628 | how many windows the frame has at minimum (one or two), |
2629 | and whether it has a menu bar or other special stuff at the top. */ | |
2630 | int min_height | |
2631 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2632 | ? MIN_SAFE_WINDOW_HEIGHT | |
2633 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2634 | |
5500c422 GM |
2635 | if (FRAME_TOP_MARGIN (frame) > 0) |
2636 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2637 | |
2638 | if (*rows < min_height) | |
2639 | *rows = min_height; | |
2640 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2641 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2642 | } | |
2643 | ||
233a4a2c GM |
2644 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2645 | check if W's width can be changed, otherwise check W's height. | |
2646 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2647 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2648 | either. */ | |
c1636aa6 | 2649 | |
233a4a2c GM |
2650 | static int |
2651 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2652 | struct window *w; | |
2653 | int width_p, check_siblings_p; | |
2654 | { | |
2655 | int fixed_p; | |
2656 | struct window *c; | |
177c0ea7 | 2657 | |
233a4a2c GM |
2658 | if (!NILP (w->hchild)) |
2659 | { | |
2660 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2661 | |
233a4a2c GM |
2662 | if (width_p) |
2663 | { | |
047aaeb9 | 2664 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2665 | children are. */ |
2666 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2667 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2668 | fixed_p = c == NULL; | |
2669 | } | |
2670 | else | |
2671 | { | |
047aaeb9 | 2672 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2673 | children is. */ |
2674 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2675 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2676 | fixed_p = c != NULL; | |
2677 | } | |
2678 | } | |
2679 | else if (!NILP (w->vchild)) | |
2680 | { | |
2681 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2682 | |
233a4a2c GM |
2683 | if (width_p) |
2684 | { | |
047aaeb9 | 2685 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2686 | children is. */ |
2687 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2688 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2689 | fixed_p = c != NULL; | |
2690 | } | |
2691 | else | |
2692 | { | |
047aaeb9 | 2693 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2694 | children are. */ |
2695 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2696 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2697 | fixed_p = c == NULL; | |
2698 | } | |
2699 | } | |
2700 | else if (BUFFERP (w->buffer)) | |
2701 | { | |
3df0580e AS |
2702 | struct buffer *old = current_buffer; |
2703 | Lisp_Object val; | |
177c0ea7 | 2704 | |
3df0580e AS |
2705 | current_buffer = XBUFFER (w->buffer); |
2706 | val = find_symbol_value (Qwindow_size_fixed); | |
2707 | current_buffer = old; | |
a34dfd12 | 2708 | |
3df0580e AS |
2709 | fixed_p = 0; |
2710 | if (!EQ (val, Qunbound)) | |
2711 | { | |
2712 | fixed_p = !NILP (val); | |
177c0ea7 | 2713 | |
3df0580e AS |
2714 | if (fixed_p |
2715 | && ((EQ (val, Qheight) && width_p) | |
2716 | || (EQ (val, Qwidth) && !width_p))) | |
2717 | fixed_p = 0; | |
233a4a2c GM |
2718 | } |
2719 | ||
2720 | /* Can't tell if this one is resizable without looking at | |
2721 | siblings. If all siblings are fixed-size this one is too. */ | |
2722 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2723 | { | |
2724 | Lisp_Object child; | |
177c0ea7 | 2725 | |
9beb8baa | 2726 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2727 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2728 | break; | |
2729 | ||
2730 | if (NILP (child)) | |
9beb8baa | 2731 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2732 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2733 | break; | |
2734 | ||
2735 | if (NILP (child)) | |
2736 | fixed_p = 1; | |
2737 | } | |
2738 | } | |
2739 | else | |
2740 | fixed_p = 1; | |
2741 | ||
2742 | return fixed_p; | |
2743 | } | |
177c0ea7 | 2744 | |
047aaeb9 MR |
2745 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2746 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2747 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2748 | return values that won't crash Emacs and don't hide components like | |
2749 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2750 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2751 | |
2752 | static int | |
047aaeb9 | 2753 | window_min_size_2 (w, width_p, safe_p) |
f1de8c77 | 2754 | struct window *w; |
047aaeb9 | 2755 | int width_p, safe_p; |
f1de8c77 | 2756 | { |
047aaeb9 MR |
2757 | /* We should consider buffer-local values of window_min_height and |
2758 | window_min_width here. */ | |
f1de8c77 | 2759 | if (width_p) |
047aaeb9 MR |
2760 | { |
2761 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 2762 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2763 | + WINDOW_SCROLL_BAR_COLS (w)); |
2764 | ||
2765 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2766 | } | |
f1de8c77 | 2767 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2768 | return 1; |
f1de8c77 | 2769 | else |
047aaeb9 MR |
2770 | { |
2771 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2772 | + ((BUFFERP (w->buffer) | |
2773 | && !NILP (XBUFFER (w->buffer)->mode_line_format)) | |
2774 | ? 1 : 0)); | |
f1de8c77 | 2775 | |
047aaeb9 MR |
2776 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2777 | } | |
f1de8c77 | 2778 | } |
233a4a2c | 2779 | |
047aaeb9 MR |
2780 | /* Return minimum size of window W, not taking fixed-width windows into |
2781 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2782 | return the minimum height. SAFE_P non-zero means ignore | |
2783 | window-min-height|width but just return values that won't crash Emacs | |
2784 | and don't hide components like fringes, scrollbars, or modelines. If | |
2785 | W is a combination window, compute the minimum size from the minimum | |
2786 | sizes of W's children. */ | |
233a4a2c GM |
2787 | |
2788 | static int | |
047aaeb9 | 2789 | window_min_size_1 (w, width_p, safe_p) |
c1636aa6 | 2790 | struct window *w; |
047aaeb9 | 2791 | int width_p, safe_p; |
c1636aa6 | 2792 | { |
233a4a2c | 2793 | struct window *c; |
c1636aa6 | 2794 | int size; |
177c0ea7 | 2795 | |
233a4a2c GM |
2796 | if (!NILP (w->hchild)) |
2797 | { | |
047aaeb9 | 2798 | /* W is a horizontal combination. */ |
233a4a2c GM |
2799 | c = XWINDOW (w->hchild); |
2800 | size = 0; | |
177c0ea7 | 2801 | |
233a4a2c GM |
2802 | if (width_p) |
2803 | { | |
047aaeb9 MR |
2804 | /* The minimum width of a horizontal combination is the sum of |
2805 | the minimum widths of its children. */ | |
233a4a2c GM |
2806 | while (c) |
2807 | { | |
047aaeb9 | 2808 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2809 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2810 | } | |
2811 | } | |
2812 | else | |
2813 | { | |
047aaeb9 MR |
2814 | /* The minimum height of a horizontal combination is the |
2815 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2816 | while (c) |
2817 | { | |
047aaeb9 | 2818 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2819 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2820 | } | |
2821 | } | |
2822 | } | |
2823 | else if (!NILP (w->vchild)) | |
2824 | { | |
047aaeb9 | 2825 | /* W is a vertical combination. */ |
233a4a2c GM |
2826 | c = XWINDOW (w->vchild); |
2827 | size = 0; | |
177c0ea7 | 2828 | |
233a4a2c GM |
2829 | if (width_p) |
2830 | { | |
047aaeb9 MR |
2831 | /* The minimum width of a vertical combination is the maximum |
2832 | of the minimum widths of its children. */ | |
233a4a2c GM |
2833 | while (c) |
2834 | { | |
047aaeb9 | 2835 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2836 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2837 | } | |
2838 | } | |
2839 | else | |
2840 | { | |
047aaeb9 MR |
2841 | /* The minimum height of a vertical combination is the sum of |
2842 | the minimum height of its children. */ | |
233a4a2c GM |
2843 | while (c) |
2844 | { | |
047aaeb9 | 2845 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2846 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2847 | } | |
2848 | } | |
2849 | } | |
c1636aa6 | 2850 | else |
047aaeb9 MR |
2851 | /* W is a leaf window. */ |
2852 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2853 | |
2854 | return size; | |
2855 | } | |
2856 | ||
233a4a2c | 2857 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2858 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2859 | return the minimum height. SAFE_P non-zero means ignore | |
2860 | window-min-height|width but just return values that won't crash Emacs | |
2861 | and don't hide components like fringes, scrollbars, or modelines. | |
2862 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2863 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2864 | |
233a4a2c | 2865 | static int |
047aaeb9 | 2866 | window_min_size (w, width_p, safe_p, ignore_fixed_p, fixed) |
233a4a2c | 2867 | struct window *w; |
047aaeb9 | 2868 | int width_p, safe_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2869 | { |
2870 | int size, fixed_p; | |
2871 | ||
f984d4fc GM |
2872 | if (ignore_fixed_p) |
2873 | fixed_p = 0; | |
2874 | else | |
2875 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2876 | |
233a4a2c GM |
2877 | if (fixed) |
2878 | *fixed = fixed_p; | |
177c0ea7 | 2879 | |
233a4a2c | 2880 | if (fixed_p) |
047aaeb9 | 2881 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2882 | else |
047aaeb9 | 2883 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2884 | |
233a4a2c GM |
2885 | return size; |
2886 | } | |
2887 | ||
2888 | ||
79fd290e | 2889 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2890 | Return 1 if window width is ok after adjustment; 0 if window |
2891 | is still too narrow. */ | |
2892 | ||
2893 | static int | |
2894 | adjust_window_margins (w) | |
2895 | struct window *w; | |
2896 | { | |
2897 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2898 | - WINDOW_FRINGE_COLS (w) | |
2899 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2900 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2901 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2902 | ||
2903 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2904 | return 1; | |
2905 | ||
2906 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2907 | return 0; | |
2908 | ||
2909 | /* Window's text area is too narrow, but reducing the window | |
2910 | margins will fix that. */ | |
2911 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2912 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2913 | { | |
2914 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2915 | w->left_margin_cols = w->right_margin_cols | |
2916 | = make_number (margin_cols/2); | |
2917 | else | |
2918 | w->right_margin_cols = make_number (margin_cols); | |
2919 | } | |
2920 | else | |
2921 | w->left_margin_cols = make_number (margin_cols); | |
2922 | return 1; | |
2923 | } | |
2924 | ||
047aaeb9 MR |
2925 | /* Calculate new sizes for windows in the list FORWARD when their |
2926 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
2927 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
2928 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
2929 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
2930 | shrink columns, otherwise shrink lines. | |
6b61353c | 2931 | |
047aaeb9 MR |
2932 | SAFE_P zero means windows may be sized down to window-min-height |
2933 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
2934 | non-zero means windows may be sized down to their minimum safe sizes | |
2935 | taking into account the space needed to display modelines, fringes, | |
2936 | and scrollbars. | |
6b61353c | 2937 | |
047aaeb9 MR |
2938 | This function returns an allocated array of new sizes that the caller |
2939 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
2940 | zero. A size zero means the window shall be deleted. Array index 0 | |
2941 | refers to the first window in FORWARD, 1 to the second, and so on. | |
2942 | ||
2943 | This function resizes windows proportionally to their size. It also | |
2944 | tries to preserve smaller windows by resizing larger windows before | |
2945 | resizing any window to zero. If resize_proportionally is non-nil for | |
2946 | a specific window, it will attempt to strictly resize that window | |
2947 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 2948 | static int * |
047aaeb9 MR |
2949 | shrink_windows (total, size, nchildren, shrinkable, resize_fixed_p, |
2950 | forward, width_p, safe_p) | |
2951 | int total, size, nchildren, shrinkable; | |
2952 | int resize_fixed_p, width_p, safe_p; | |
6b61353c KH |
2953 | Lisp_Object forward; |
2954 | { | |
2955 | int available_resize = 0; | |
047aaeb9 | 2956 | int *new_sizes, *min_sizes; |
6b61353c KH |
2957 | struct window *c; |
2958 | Lisp_Object child; | |
2959 | int smallest = total; | |
2960 | int total_removed = 0; | |
2961 | int total_shrink = total - size; | |
2962 | int i; | |
2963 | ||
2964 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 2965 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
2966 | |
2967 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2968 | { | |
2969 | int child_size; | |
2970 | ||
2971 | c = XWINDOW (child); | |
047aaeb9 | 2972 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 2973 | |
047aaeb9 | 2974 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
2975 | new_sizes[i] = -1; |
2976 | else | |
2977 | { | |
2978 | new_sizes[i] = child_size; | |
047aaeb9 MR |
2979 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
2980 | if (child_size > min_sizes[i] | |
2981 | && NILP (c->resize_proportionally)) | |
2982 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
2983 | } |
2984 | } | |
2985 | /* We might need to shrink some windows to zero. Find the smallest | |
2986 | windows and set them to 0 until we can fulfil the new size. */ | |
2987 | ||
2988 | while (shrinkable > 1 && size + available_resize < total) | |
2989 | { | |
2990 | for (i = 0; i < nchildren; ++i) | |
2991 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2992 | smallest = new_sizes[i]; | |
2993 | ||
2994 | for (i = 0; i < nchildren; ++i) | |
2995 | if (new_sizes[i] == smallest) | |
2996 | { | |
2997 | /* Resize this window down to zero. */ | |
2998 | new_sizes[i] = 0; | |
047aaeb9 MR |
2999 | if (smallest > min_sizes[i]) |
3000 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
3001 | available_resize += smallest; |
3002 | --shrinkable; | |
3003 | total_removed += smallest; | |
3004 | ||
ef614e04 JD |
3005 | /* We don't know what the smallest is now. */ |
3006 | smallest = total; | |
3007 | ||
6b61353c KH |
3008 | /* Out of for, just remove one window at the time and |
3009 | check again if we have enough space. */ | |
3010 | break; | |
3011 | } | |
3012 | } | |
3013 | ||
3014 | /* Now, calculate the new sizes. Try to shrink each window | |
3015 | proportional to its size. */ | |
3016 | for (i = 0; i < nchildren; ++i) | |
3017 | { | |
047aaeb9 | 3018 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 3019 | { |
047aaeb9 MR |
3020 | int to_shrink = total_shrink * new_sizes[i] / total; |
3021 | ||
3022 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
3023 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
3024 | new_sizes[i] -= to_shrink; |
3025 | total_removed += to_shrink; | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | /* Any reminder due to rounding, we just subtract from windows | |
3030 | that are left and still can be shrunk. */ | |
3031 | while (total_shrink > total_removed) | |
3032 | { | |
ef614e04 JD |
3033 | int nonzero_sizes = 0; |
3034 | int nonzero_idx = -1; | |
3035 | ||
3036 | for (i = 0; i < nchildren; ++i) | |
3037 | if (new_sizes[i] > 0) | |
3038 | { | |
3039 | ++nonzero_sizes; | |
3040 | nonzero_idx = i; | |
3041 | } | |
c49a0495 | 3042 | |
6b61353c | 3043 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3044 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3045 | { |
3046 | --new_sizes[i]; | |
3047 | ++total_removed; | |
3048 | ||
3049 | /* Out of for, just shrink one window at the time and | |
3050 | check again if we have enough space. */ | |
3051 | break; | |
3052 | } | |
ef614e04 | 3053 | |
ef614e04 JD |
3054 | /* Special case, only one window left. */ |
3055 | if (nonzero_sizes == 1) | |
3056 | break; | |
3057 | } | |
3058 | ||
3059 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3060 | while (total_shrink < total_removed) | |
3061 | { | |
3062 | for (i = 0; i < nchildren; ++i) | |
3063 | { | |
3064 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3065 | { | |
3066 | ++new_sizes[i]; | |
3067 | --total_removed; | |
3068 | break; | |
3069 | } | |
3070 | } | |
6b61353c KH |
3071 | } |
3072 | ||
047aaeb9 MR |
3073 | xfree (min_sizes); |
3074 | ||
6b61353c KH |
3075 | return new_sizes; |
3076 | } | |
949cf20f | 3077 | |
233a4a2c | 3078 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3079 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3080 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3081 | |
3082 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3083 | they are in series. If LAST_ONLY is 1, change only the last of | |
3084 | WINDOW's children when they are in series. | |
3085 | ||
3086 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3087 | windows that become too small unless NODELETE_P is 1. When |
3088 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3089 | window-min-width when resizing windows but use safe defaults instead. | |
3090 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3091 | |
3092 | static void | |
5fe0b054 | 3093 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 3094 | Lisp_Object window; |
233a4a2c | 3095 | int size, width_p, nodelete_p; |
5fe0b054 | 3096 | int first_only, last_only; |
7ab12479 | 3097 | { |
233a4a2c GM |
3098 | struct window *w = XWINDOW (window); |
3099 | struct window *c; | |
3100 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3101 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3102 | |
7ae2f10f | 3103 | size = max (0, size); |
177c0ea7 | 3104 | |
047aaeb9 MR |
3105 | /* Delete WINDOW if it's too small. */ |
3106 | if (nodelete_p != 1 && !NILP (w->parent) | |
3107 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3108 | { |
047aaeb9 MR |
3109 | delete_window (window); |
3110 | return; | |
7ab12479 JB |
3111 | } |
3112 | ||
233a4a2c | 3113 | /* Set redisplay hints. */ |
7ae2f10f GM |
3114 | w->last_modified = make_number (0); |
3115 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3116 | windows_or_buffers_changed++; |
7ae2f10f | 3117 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3118 | |
233a4a2c GM |
3119 | if (width_p) |
3120 | { | |
3121 | sideward = &w->vchild; | |
3122 | forward = &w->hchild; | |
949cf20f KS |
3123 | w->total_cols = make_number (size); |
3124 | adjust_window_margins (w); | |
233a4a2c GM |
3125 | } |
3126 | else | |
3127 | { | |
3128 | sideward = &w->hchild; | |
3129 | forward = &w->vchild; | |
949cf20f KS |
3130 | w->total_lines = make_number (size); |
3131 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3132 | } |
3133 | ||
3134 | if (!NILP (*sideward)) | |
7ab12479 | 3135 | { |
5fe0b054 | 3136 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3137 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3138 | { |
233a4a2c GM |
3139 | c = XWINDOW (child); |
3140 | if (width_p) | |
949cf20f | 3141 | c->left_col = w->left_col; |
233a4a2c | 3142 | else |
949cf20f | 3143 | c->top_line = w->top_line; |
5fe0b054 RS |
3144 | size_window (child, size, width_p, nodelete_p, |
3145 | first_only, last_only); | |
7ab12479 JB |
3146 | } |
3147 | } | |
5fe0b054 RS |
3148 | else if (!NILP (*forward) && last_only) |
3149 | { | |
3150 | /* Change the last in a series of siblings. */ | |
3151 | Lisp_Object last_child; | |
3152 | int child_size; | |
3153 | ||
3154 | for (child = *forward; !NILP (child); child = c->next) | |
3155 | { | |
3156 | c = XWINDOW (child); | |
3157 | last_child = child; | |
3158 | } | |
3159 | ||
047aaeb9 MR |
3160 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3161 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3162 | width_p, nodelete_p, first_only, last_only); |
3163 | } | |
3164 | else if (!NILP (*forward) && first_only) | |
3165 | { | |
3166 | /* Change the first in a series of siblings. */ | |
3167 | int child_size; | |
3168 | ||
3169 | child = *forward; | |
3170 | c = XWINDOW (child); | |
3171 | ||
3172 | if (width_p) | |
3173 | c->left_col = w->left_col; | |
3174 | else | |
3175 | c->top_line = w->top_line; | |
3176 | ||
047aaeb9 MR |
3177 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3178 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3179 | width_p, nodelete_p, first_only, last_only); |
3180 | } | |
233a4a2c | 3181 | else if (!NILP (*forward)) |
7ab12479 | 3182 | { |
233a4a2c GM |
3183 | int fixed_size, each, extra, n; |
3184 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3185 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3186 | int *new_sizes = NULL; |
233a4a2c | 3187 | |
5fe0b054 | 3188 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3189 | number of child windows. */ |
8b6d9dc9 | 3190 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3191 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3192 | { |
8b6d9dc9 | 3193 | int child_size; |
177c0ea7 | 3194 | |
7ab12479 | 3195 | c = XWINDOW (child); |
047aaeb9 | 3196 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3197 | total += child_size; |
177c0ea7 | 3198 | |
233a4a2c GM |
3199 | if (window_fixed_size_p (c, width_p, 0)) |
3200 | { | |
8b6d9dc9 | 3201 | fixed_size += child_size; |
233a4a2c GM |
3202 | ++nfixed; |
3203 | } | |
3204 | } | |
7ab12479 | 3205 | |
233a4a2c GM |
3206 | /* If the new size is smaller than fixed_size, or if there |
3207 | aren't any resizable windows, allow resizing fixed-size | |
3208 | windows. */ | |
3209 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3210 | ||
6b61353c | 3211 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3212 | value of extra takes care of rounding errors. */ |
3213 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3214 | if (size < total && n > 1) |
047aaeb9 MR |
3215 | new_sizes = shrink_windows (total, size, nchildren, n, |
3216 | resize_fixed_p, *forward, width_p, | |
3217 | nodelete_p == 2); | |
6b61353c KH |
3218 | else |
3219 | { | |
3220 | each = (size - total) / n; | |
3221 | extra = (size - total) - n * each; | |
3222 | } | |
233a4a2c GM |
3223 | |
3224 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3225 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3226 | last_pos = first_pos; |
6b61353c | 3227 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3228 | { |
3229 | int new_size, old_size; | |
177c0ea7 | 3230 | |
233a4a2c | 3231 | c = XWINDOW (child); |
047aaeb9 | 3232 | old_size = WINDOW_TOTAL_SIZE (c, width_p); |
233a4a2c | 3233 | new_size = old_size; |
7ab12479 | 3234 | |
233a4a2c GM |
3235 | /* The top or left edge position of this child equals the |
3236 | bottom or right edge of its predecessor. */ | |
3237 | if (width_p) | |
949cf20f | 3238 | c->left_col = make_number (last_pos); |
233a4a2c | 3239 | else |
949cf20f | 3240 | c->top_line = make_number (last_pos); |
7ab12479 | 3241 | |
233a4a2c GM |
3242 | /* If this child can be resized, do it. */ |
3243 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3244 | { | |
6b61353c | 3245 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3246 | extra = 0; |
3247 | } | |
177c0ea7 | 3248 | |
047aaeb9 | 3249 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3250 | edge positions to children, so it's not a no-op if we |
3251 | didn't change the child's size. */ | |
5fe0b054 | 3252 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3253 | |
3254 | /* Remember the bottom/right edge position of this child; it | |
3255 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3256 | last_pos += new_size; |
7ab12479 | 3257 | } |
233a4a2c | 3258 | |
70fdbb46 | 3259 | xfree (new_sizes); |
6b61353c | 3260 | |
233a4a2c GM |
3261 | /* We should have covered the parent exactly with child windows. */ |
3262 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3263 | |
7ab12479 | 3264 | /* Now delete any children that became too small. */ |
047aaeb9 | 3265 | if (nodelete_p != 1) |
233a4a2c | 3266 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3267 | { |
233a4a2c | 3268 | int child_size; |
047aaeb9 | 3269 | |
233a4a2c | 3270 | c = XWINDOW (child); |
047aaeb9 MR |
3271 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3272 | size_window (child, child_size, width_p, nodelete_p, | |
3273 | first_only, last_only); | |
7ab12479 JB |
3274 | } |
3275 | } | |
3276 | } | |
3277 | ||
233a4a2c | 3278 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3279 | WINDOW's children. NODELETE zero means windows that have become |
3280 | smaller than window-min-height in the process may be deleted. | |
3281 | NODELETE 1 means never delete windows that become too small in the | |
3282 | process. (The caller should check later and do so if appropriate.) | |
3283 | NODELETE 2 means delete only windows that have become too small to be | |
3284 | displayed correctly. */ | |
7ab12479 | 3285 | |
5e14b1fc | 3286 | void |
233a4a2c | 3287 | set_window_height (window, height, nodelete) |
7ab12479 | 3288 | Lisp_Object window; |
233a4a2c | 3289 | int height; |
7ab12479 JB |
3290 | int nodelete; |
3291 | { | |
5fe0b054 | 3292 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3293 | } |
7ab12479 | 3294 | |
233a4a2c | 3295 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3296 | WINDOW's children. NODELETE zero means windows that have become |
3297 | smaller than window-min-width in the process may be deleted. | |
3298 | NODELETE 1 means never delete windows that become too small in the | |
3299 | process. (The caller should check later and do so if appropriate.) | |
3300 | NODELETE 2 means delete only windows that have become too small to be | |
3301 | displayed correctly. */ | |
7ab12479 | 3302 | |
233a4a2c GM |
3303 | void |
3304 | set_window_width (window, width, nodelete) | |
3305 | Lisp_Object window; | |
3306 | int width; | |
3307 | int nodelete; | |
3308 | { | |
5fe0b054 | 3309 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3310 | } |
233a4a2c | 3311 | |
cdbc7fec KS |
3312 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3313 | ||
3314 | void | |
3315 | change_window_heights (window, n) | |
3316 | Lisp_Object window; | |
3317 | int n; | |
3318 | { | |
3319 | struct window *w = XWINDOW (window); | |
3320 | ||
949cf20f KS |
3321 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3322 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3323 | |
949cf20f KS |
3324 | if (INTEGERP (w->orig_top_line)) |
3325 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3326 | if (INTEGERP (w->orig_total_lines)) | |
3327 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3328 | |
3329 | /* Handle just the top child in a vertical split. */ | |
3330 | if (!NILP (w->vchild)) | |
3331 | change_window_heights (w->vchild, n); | |
3332 | ||
3333 | /* Adjust all children in a horizontal split. */ | |
3334 | for (window = w->hchild; !NILP (window); window = w->next) | |
3335 | { | |
3336 | w = XWINDOW (window); | |
3337 | change_window_heights (window, n); | |
3338 | } | |
3339 | } | |
3340 | ||
7ab12479 | 3341 | \f |
1d8d96fa | 3342 | int window_select_count; |
7ab12479 | 3343 | |
56613f06 SM |
3344 | EXFUN (Fset_window_fringes, 4); |
3345 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3346 | |
6a44ffb3 SM |
3347 | static void |
3348 | run_funs (Lisp_Object funs) | |
3349 | { | |
3350 | for (; CONSP (funs); funs = XCDR (funs)) | |
3351 | if (!EQ (XCAR (funs), Qt)) | |
3352 | call0 (XCAR (funs)); | |
3353 | } | |
3354 | ||
3355 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3356 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3357 | |
ef264c42 SM |
3358 | void |
3359 | run_window_configuration_change_hook (struct frame *f) | |
3360 | { | |
fec89261 | 3361 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3362 | Lisp_Object frame, global_wcch |
3363 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3364 | XSETFRAME (frame, f); | |
3365 | ||
3366 | if (NILP (Vrun_hooks)) | |
3367 | return; | |
3368 | ||
fec89261 MR |
3369 | if (SELECTED_FRAME () != f) |
3370 | { | |
c6932ecd MR |
3371 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
3372 | Fselect_frame (frame, Qt); | |
fec89261 | 3373 | } |
6a44ffb3 SM |
3374 | |
3375 | /* Use the right buffer. Matters when running the local hooks. */ | |
3376 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3377 | { | |
3378 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3379 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3380 | } | |
3381 | ||
3382 | /* Look for buffer-local values. */ | |
3383 | { | |
3384 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3385 | for (; CONSP (windows); windows = XCDR (windows)) | |
3386 | { | |
3387 | Lisp_Object window = XCAR (windows); | |
3388 | Lisp_Object buffer = Fwindow_buffer (window); | |
3389 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3390 | buffer))) | |
3391 | { | |
3392 | int count = SPECPDL_INDEX (); | |
3393 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3394 | select_window_norecord (window); | |
3395 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3396 | buffer)); | |
fec89261 MR |
3397 | unbind_to (count, Qnil); |
3398 | } | |
6a44ffb3 SM |
3399 | } |
3400 | } | |
047aaeb9 | 3401 | |
6a44ffb3 SM |
3402 | run_funs (global_wcch); |
3403 | unbind_to (count, Qnil); | |
ef264c42 SM |
3404 | } |
3405 | ||
5500c422 GM |
3406 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3407 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3408 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3409 | margins, fringes, and scroll-bar settings of the window are not | |
3410 | reset from the buffer's local settings. */ | |
7ab12479 | 3411 | |
5500c422 | 3412 | void |
949cf20f | 3413 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3414 | Lisp_Object window, buffer; |
949cf20f | 3415 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3416 | { |
3417 | struct window *w = XWINDOW (window); | |
3418 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3419 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3420 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3421 | |
3422 | w->buffer = buffer; | |
86e48436 RS |
3423 | |
3424 | if (EQ (window, selected_window)) | |
5500c422 | 3425 | b->last_selected_window = window; |
beb4e312 | 3426 | |
c49a0495 KS |
3427 | /* Let redisplay errors through. */ |
3428 | b->display_error_modiff = 0; | |
3429 | ||
beb4e312 | 3430 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3431 | if (INTEGERP (b->display_count)) |
3432 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3433 | b->display_time = Fcurrent_time (); | |
86e48436 | 3434 | |
d834a2e9 | 3435 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3436 | XSETFASTINT (w->window_end_vpos, 0); |
3437 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3438 | w->window_end_valid = Qnil; |
c3b232e4 | 3439 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3440 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3441 | vscroll. This case happens for example when called from |
3442 | change_frame_size_1, where we use a dummy call to | |
3443 | Fset_window_buffer on the frame's selected window (and no other) | |
3444 | just in order to run window-configuration-change-hook. | |
3445 | Resetting hscroll and vscroll here is problematic for things like | |
3446 | image-mode and doc-view-mode since it resets the image's position | |
3447 | whenever we resize the frame. */ | |
3448 | w->hscroll = w->min_hscroll = make_number (0); | |
3449 | w->vscroll = 0; | |
3450 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3451 | set_marker_restricted (w->start, | |
3452 | make_number (b->last_window_start), | |
3453 | buffer); | |
3454 | w->start_at_line_beg = Qnil; | |
3455 | w->force_start = Qnil; | |
3456 | XSETFASTINT (w->last_modified, 0); | |
3457 | XSETFASTINT (w->last_overlay_modified, 0); | |
3458 | } | |
3459 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3460 | I doubt it's worth the trouble. */ | |
7ab12479 | 3461 | windows_or_buffers_changed++; |
5b03d3c0 | 3462 | |
da39107c | 3463 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3464 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3465 | because that might itself be a local variable. */ | |
da39107c | 3466 | if (window_initialized) |
5b03d3c0 | 3467 | { |
da39107c | 3468 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3469 | Fset_buffer (buffer); |
3470 | } | |
3471 | ||
a1562258 SM |
3472 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3473 | ||
949cf20f KS |
3474 | if (!keep_margins_p) |
3475 | { | |
3476 | /* Set left and right marginal area width etc. from buffer. */ | |
3477 | ||
79fd290e | 3478 | /* This may call adjust_window_margins three times, so |
949cf20f | 3479 | temporarily disable window margins. */ |
6b61353c KH |
3480 | Lisp_Object save_left = w->left_margin_cols; |
3481 | Lisp_Object save_right = w->right_margin_cols; | |
3482 | ||
949cf20f KS |
3483 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3484 | ||
3485 | Fset_window_fringes (window, | |
3486 | b->left_fringe_width, b->right_fringe_width, | |
3487 | b->fringes_outside_margins); | |
3488 | ||
3489 | Fset_window_scroll_bars (window, | |
3490 | b->scroll_bar_width, | |
3491 | b->vertical_scroll_bar_type, Qnil); | |
3492 | ||
6b61353c KH |
3493 | w->left_margin_cols = save_left; |
3494 | w->right_margin_cols = save_right; | |
3495 | ||
949cf20f KS |
3496 | Fset_window_margins (window, |
3497 | b->left_margin_cols, b->right_margin_cols); | |
3498 | } | |
7ab12479 | 3499 | |
5500c422 GM |
3500 | if (run_hooks_p) |
3501 | { | |
3502 | if (! NILP (Vwindow_scroll_functions)) | |
3503 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3504 | Fmarker_position (w->start)); | |
ef264c42 | 3505 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3506 | } |
543f5fb1 | 3507 | |
5b03d3c0 | 3508 | unbind_to (count, Qnil); |
5500c422 | 3509 | } |
5b03d3c0 | 3510 | |
5500c422 | 3511 | |
949cf20f | 3512 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3513 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3514 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3515 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3516 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3517 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 3518 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 3519 | |
7bfac547 MR |
3520 | This function throws an error when WINDOW is strongly dedicated to its |
3521 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3522 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3523 | |
8fef9de1 MR |
3524 | This function runs `window-scroll-functions' before running |
3525 | `window-configuration-change-hook'. */) | |
d653c8cc MR |
3526 | (window, buffer_or_name, keep_margins) |
3527 | register Lisp_Object window, buffer_or_name, keep_margins; | |
5500c422 | 3528 | { |
d653c8cc | 3529 | register Lisp_Object tem, buffer; |
5500c422 | 3530 | register struct window *w = decode_window (window); |
5500c422 | 3531 | |
bed0c171 | 3532 | XSETWINDOW (window, w); |
d653c8cc | 3533 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3534 | CHECK_BUFFER (buffer); |
5500c422 GM |
3535 | if (NILP (XBUFFER (buffer)->name)) |
3536 | error ("Attempt to display deleted buffer"); | |
3537 | ||
3538 | tem = w->buffer; | |
aac0c6e3 MR |
3539 | if (NILP (tem)) |
3540 | error ("Window is deleted"); | |
3541 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3542 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3543 | { |
f5385255 SM |
3544 | if (!EQ (tem, buffer)) |
3545 | if (EQ (w->dedicated, Qt)) | |
3546 | error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem)->name)); | |
3547 | else | |
3548 | w->dedicated = Qnil; | |
5500c422 GM |
3549 | |
3550 | unshow_buffer (w); | |
3551 | } | |
3552 | ||
949cf20f | 3553 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3554 | return Qnil; |
3555 | } | |
3556 | ||
d653c8cc MR |
3557 | /* Note that selected_window can be nil when this is called from |
3558 | Fset_window_configuration. */ | |
2d0834cc | 3559 | |
14d87dc9 | 3560 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3561 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3562 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3563 | and make WINDOW the frame's selected window. Return WINDOW. |
4e822bdc | 3564 | Optional second arg NORECORD non-nil means do not put this buffer |
c6932ecd MR |
3565 | at the front of the list of recently selected ones and do not |
3566 | make this window the most recently selected one. | |
282f7831 | 3567 | |
4e822bdc MR |
3568 | Note that the main editor command loop selects the buffer of the |
3569 | selected window before each command. */) | |
14d87dc9 SM |
3570 | (window, norecord) |
3571 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3572 | { |
3573 | register struct window *w; | |
719eaeb1 | 3574 | register struct window *ow; |
1ae1a37d | 3575 | struct frame *sf; |
7ab12479 | 3576 | |
b7826503 | 3577 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3578 | |
3579 | w = XWINDOW (window); | |
50e88778 | 3580 | w->frozen_window_start_p = 0; |
7ab12479 | 3581 | |
4e822bdc MR |
3582 | if (NILP (norecord)) |
3583 | { | |
3584 | ++window_select_count; | |
3585 | XSETFASTINT (w->use_time, window_select_count); | |
3586 | } | |
3587 | ||
7ab12479 JB |
3588 | if (EQ (window, selected_window)) |
3589 | return window; | |
3590 | ||
ca2d5566 SM |
3591 | sf = SELECTED_FRAME (); |
3592 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3593 | { | |
3594 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3595 | /* Use this rather than Fhandle_switch_frame | |
3596 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3597 | move around in the state where a minibuffer in a separate | |
3598 | frame is active. */ | |
c6932ecd | 3599 | Fselect_frame (WINDOW_FRAME (w), norecord); |
ca2d5566 SM |
3600 | /* Fselect_frame called us back so we've done all the work already. */ |
3601 | eassert (EQ (window, selected_window)); | |
3602 | return window; | |
3603 | } | |
3604 | else | |
3605 | sf->selected_window = window; | |
3606 | ||
a46c0153 RS |
3607 | /* Store the current buffer's actual point into the |
3608 | old selected window. It belongs to that window, | |
3609 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3610 | if (!NILP (selected_window)) |
3611 | { | |
3612 | ow = XWINDOW (selected_window); | |
3613 | if (! NILP (ow->buffer)) | |
3614 | set_marker_both (ow->pointm, ow->buffer, | |
3615 | BUF_PT (XBUFFER (ow->buffer)), | |
3616 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3617 | } | |
7ab12479 JB |
3618 | |
3619 | selected_window = window; | |
7ab12479 | 3620 | |
14d87dc9 | 3621 | if (NILP (norecord)) |
b7354ddf | 3622 | record_buffer (w->buffer); |
7ab12479 JB |
3623 | Fset_buffer (w->buffer); |
3624 | ||
86e48436 RS |
3625 | XBUFFER (w->buffer)->last_selected_window = window; |
3626 | ||
7ab12479 JB |
3627 | /* Go to the point recorded in the window. |
3628 | This is important when the buffer is in more | |
3629 | than one window. It also matters when | |
3630 | redisplay_window has altered point after scrolling, | |
3631 | because it makes the change only in the window. */ | |
3632 | { | |
3633 | register int new_point = marker_position (w->pointm); | |
3634 | if (new_point < BEGV) | |
3635 | SET_PT (BEGV); | |
a9c95e08 | 3636 | else if (new_point > ZV) |
7ab12479 JB |
3637 | SET_PT (ZV); |
3638 | else | |
3639 | SET_PT (new_point); | |
3640 | } | |
3641 | ||
3642 | windows_or_buffers_changed++; | |
3643 | return window; | |
3644 | } | |
14d87dc9 SM |
3645 | |
3646 | static Lisp_Object | |
3647 | select_window_norecord (window) | |
3648 | Lisp_Object window; | |
3649 | { | |
ab6d1131 MR |
3650 | return WINDOW_LIVE_P (window) |
3651 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 3652 | } |
c6932ecd MR |
3653 | |
3654 | static Lisp_Object | |
3655 | select_frame_norecord (frame) | |
3656 | Lisp_Object frame; | |
3657 | { | |
3658 | return FRAME_LIVE_P (XFRAME (frame)) | |
3659 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3660 | } | |
b7354ddf | 3661 | \f |
87478b52 SM |
3662 | Lisp_Object |
3663 | display_buffer (buffer, not_this_window_p, override_frame) | |
3664 | Lisp_Object buffer, not_this_window_p, override_frame; | |
d07f802a | 3665 | { |
87478b52 | 3666 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3667 | } |
3668 | ||
6b61353c KH |
3669 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3670 | 0, 1, 0, | |
5a1048a5 | 3671 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3672 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3673 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c KH |
3674 | displaying that buffer. */) |
3675 | (object) | |
3676 | Lisp_Object object; | |
3677 | { | |
3678 | if (NILP (object)) | |
3679 | { | |
3680 | windows_or_buffers_changed++; | |
3681 | update_mode_lines++; | |
3682 | return Qt; | |
3683 | } | |
3684 | ||
3685 | if (WINDOWP (object)) | |
3686 | { | |
3687 | struct window *w = XWINDOW (object); | |
3688 | mark_window_display_accurate (object, 0); | |
3689 | w->update_mode_line = Qt; | |
3690 | if (BUFFERP (w->buffer)) | |
3691 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3692 | ++update_mode_lines; | |
3693 | return Qt; | |
3694 | } | |
0cc1039f | 3695 | |
6b61353c KH |
3696 | if (STRINGP (object)) |
3697 | object = Fget_buffer (object); | |
3698 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3699 | { | |
3700 | /* Walk all windows looking for buffer, and force update | |
3701 | of each of those windows. */ | |
3702 | ||
3703 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3704 | return NILP (object) ? Qnil : Qt; | |
3705 | } | |
3706 | ||
3707 | /* If nothing suitable was found, just return. | |
3708 | We could signal an error, but this feature will typically be used | |
3709 | asynchronously in timers or process sentinels, so we don't. */ | |
3710 | return Qnil; | |
3711 | } | |
3712 | ||
3713 | ||
7ab12479 JB |
3714 | void |
3715 | temp_output_buffer_show (buf) | |
3716 | register Lisp_Object buf; | |
3717 | { | |
3718 | register struct buffer *old = current_buffer; | |
3719 | register Lisp_Object window; | |
3720 | register struct window *w; | |
3721 | ||
bccd3dd1 RS |
3722 | XBUFFER (buf)->directory = current_buffer->directory; |
3723 | ||
7ab12479 | 3724 | Fset_buffer (buf); |
c6367666 | 3725 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3726 | BEGV = BEG; |
3727 | ZV = Z; | |
3728 | SET_PT (BEG); | |
06be4f85 | 3729 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3730 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3731 | #endif |
7ab12479 JB |
3732 | set_buffer_internal (old); |
3733 | ||
e67a1dea | 3734 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3735 | call1 (Vtemp_buffer_show_function, buf); |
3736 | else | |
3737 | { | |
87478b52 | 3738 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3739 | |
1ae1a37d | 3740 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3741 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3742 | Vminibuf_scroll_window = window; |
3743 | w = XWINDOW (window); | |
d834a2e9 | 3744 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3745 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3746 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3747 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3748 | |
beb4e312 | 3749 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3750 | and its buffer current. */ |
2d0834cc SM |
3751 | |
3752 | if (!NILP (Vrun_hooks) | |
3753 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3754 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3755 | { |
2d0834cc SM |
3756 | int count = SPECPDL_INDEX (); |
3757 | Lisp_Object prev_window, prev_buffer; | |
3758 | prev_window = selected_window; | |
3759 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3760 | |
2d0834cc SM |
3761 | /* Select the window that was chosen, for running the hook. |
3762 | Note: Both Fselect_window and select_window_norecord may | |
3763 | set-buffer to the buffer displayed in the window, | |
3764 | so we need to save the current buffer. --stef */ | |
3765 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3766 | record_unwind_protect (select_window_norecord, prev_window); | |
3767 | Fselect_window (window, Qt); | |
3768 | Fset_buffer (w->buffer); | |
3769 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3770 | unbind_to (count, Qnil); | |
2cccc823 RS |
3771 | } |
3772 | } | |
7ab12479 JB |
3773 | } |
3774 | \f | |
dfcf069d | 3775 | static void |
7ab12479 JB |
3776 | make_dummy_parent (window) |
3777 | Lisp_Object window; | |
3778 | { | |
cffec418 | 3779 | Lisp_Object new; |
7ab12479 | 3780 | register struct window *o, *p; |
cffec418 | 3781 | int i; |
7ab12479 | 3782 | |
cffec418 | 3783 | o = XWINDOW (window); |
26605be9 | 3784 | p = allocate_window (); |
cffec418 | 3785 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3786 | ((struct Lisp_Vector *) p)->contents[i] |
3787 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3788 | XSETWINDOW (new, p); |
7ab12479 | 3789 | |
2a1893f4 SM |
3790 | ++sequence_number; |
3791 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3792 | |
3793 | /* Put new into window structure in place of window */ | |
3794 | replace_window (window, new); | |
3795 | ||
3796 | o->next = Qnil; | |
3797 | o->prev = Qnil; | |
3798 | o->vchild = Qnil; | |
3799 | o->hchild = Qnil; | |
3800 | o->parent = new; | |
3801 | ||
3802 | p->start = Qnil; | |
3803 | p->pointm = Qnil; | |
3804 | p->buffer = Qnil; | |
3805 | } | |
3806 | ||
3807 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3808 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3809 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
3810 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
3811 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
3812 | window's scroll bar, or the divider column to its right. | |
c2755926 | 3813 | Interactively, all arguments are nil. |
c2755926 | 3814 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
3815 | The upper or leftmost window is the original one, and remains selected |
3816 | if it was selected before. | |
3817 | ||
87527026 MR |
3818 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
3819 | (window, size, horizontal) | |
3820 | Lisp_Object window, size, horizontal; | |
7ab12479 JB |
3821 | { |
3822 | register Lisp_Object new; | |
3823 | register struct window *o, *p; | |
c0807608 | 3824 | FRAME_PTR fo; |
77ae0fe3 | 3825 | register int size_int; |
7ab12479 | 3826 | |
265a9e55 | 3827 | if (NILP (window)) |
7ab12479 JB |
3828 | window = selected_window; |
3829 | else | |
b7826503 | 3830 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3831 | |
3832 | o = XWINDOW (window); | |
c0807608 | 3833 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3834 | |
77ae0fe3 | 3835 | if (NILP (size)) |
7ab12479 | 3836 | { |
87527026 | 3837 | if (!NILP (horizontal)) |
c0807608 | 3838 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3839 | the usable space in columns by two. |
3840 | We round up, since the left-hand window may include | |
3841 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3842 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3843 | else |
949cf20f | 3844 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3845 | } |
3846 | else | |
3847 | { | |
b7826503 | 3848 | CHECK_NUMBER (size); |
77ae0fe3 | 3849 | size_int = XINT (size); |
7ab12479 JB |
3850 | } |
3851 | ||
3852 | if (MINI_WINDOW_P (o)) | |
3853 | error ("Attempt to split minibuffer window"); | |
87527026 | 3854 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 3855 | error ("Attempt to split fixed-size window"); |
7ab12479 | 3856 | |
87527026 | 3857 | if (NILP (horizontal)) |
7ab12479 | 3858 | { |
047aaeb9 MR |
3859 | int window_safe_height = window_min_size_2 (o, 0, 0); |
3860 | ||
f1de8c77 | 3861 | if (size_int < window_safe_height) |
77ae0fe3 | 3862 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 3863 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 3864 | error ("Window height %d too small (after splitting)", |
949cf20f | 3865 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3866 | if (NILP (o->parent) |
3867 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3868 | { |
3869 | make_dummy_parent (window); | |
3870 | new = o->parent; | |
3871 | XWINDOW (new)->vchild = window; | |
3872 | } | |
3873 | } | |
3874 | else | |
3875 | { | |
047aaeb9 MR |
3876 | int window_safe_width = window_min_size_2 (o, 1, 0); |
3877 | ||
f1de8c77 | 3878 | if (size_int < window_safe_width) |
77ae0fe3 | 3879 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 3880 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 3881 | error ("Window width %d too small (after splitting)", |
949cf20f | 3882 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3883 | if (NILP (o->parent) |
3884 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3885 | { |
3886 | make_dummy_parent (window); | |
3887 | new = o->parent; | |
3888 | XWINDOW (new)->hchild = window; | |
3889 | } | |
3890 | } | |
3891 | ||
3892 | /* Now we know that window's parent is a vertical combination | |
3893 | if we are dividing vertically, or a horizontal combination | |
3894 | if we are making side-by-side windows */ | |
3895 | ||
3896 | windows_or_buffers_changed++; | |
c0807608 | 3897 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3898 | new = make_window (); |
3899 | p = XWINDOW (new); | |
3900 | ||
44fa5b1e | 3901 | p->frame = o->frame; |
7ab12479 | 3902 | p->next = o->next; |
265a9e55 | 3903 | if (!NILP (p->next)) |
7ab12479 JB |
3904 | XWINDOW (p->next)->prev = new; |
3905 | p->prev = window; | |
3906 | o->next = new; | |
3907 | p->parent = o->parent; | |
3908 | p->buffer = Qt; | |
5500c422 GM |
3909 | p->window_end_valid = Qnil; |
3910 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3911 | |
949cf20f KS |
3912 | /* Duplicate special geometry settings. */ |
3913 | ||
3914 | p->left_margin_cols = o->left_margin_cols; | |
3915 | p->right_margin_cols = o->right_margin_cols; | |
3916 | p->left_fringe_width = o->left_fringe_width; | |
3917 | p->right_fringe_width = o->right_fringe_width; | |
3918 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3919 | p->scroll_bar_width = o->scroll_bar_width; | |
3920 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3921 | ||
44fa5b1e | 3922 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3923 | |
87527026 | 3924 | if (!NILP (horizontal)) |
7ab12479 | 3925 | { |
949cf20f KS |
3926 | p->total_lines = o->total_lines; |
3927 | p->top_line = o->top_line; | |
3928 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3929 | XSETFASTINT (o->total_cols, size_int); | |
3930 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3931 | adjust_window_margins (p); | |
3932 | adjust_window_margins (o); | |
7ab12479 JB |
3933 | } |
3934 | else | |
3935 | { | |
949cf20f KS |
3936 | p->left_col = o->left_col; |
3937 | p->total_cols = o->total_cols; | |
3938 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3939 | XSETFASTINT (o->total_lines, size_int); | |
3940 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3941 | } |
3942 | ||
5500c422 GM |
3943 | /* Adjust glyph matrices. */ |
3944 | adjust_glyphs (fo); | |
949cf20f KS |
3945 | |
3946 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3947 | return new; |
3948 | } | |
3949 | \f | |
56ebfae2 | 3950 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
3951 | doc: /* Make selected window SIZE lines taller. |
3952 | Interactively, if no argument is given, make the selected window one | |
3953 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
3954 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
3955 | -SIZE lines or columns. Return nil. | |
3956 | ||
3957 | This function can delete windows if they get too small. The size of | |
3958 | fixed size windows is not altered by this function. */) | |
3959 | (size, horizontal) | |
3960 | Lisp_Object size, horizontal; | |
7ab12479 | 3961 | { |
aac0c6e3 MR |
3962 | CHECK_NUMBER (size); |
3963 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3964 | |
eeca6f6f | 3965 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3966 | |
7ab12479 JB |
3967 | return Qnil; |
3968 | } | |
3969 | ||
56ebfae2 | 3970 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
3971 | doc: /* Make selected window SIZE lines smaller. |
3972 | Interactively, if no argument is given, make the selected window one | |
3973 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
3974 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
3975 | window by -SIZE lines or columns. Return nil. | |
3976 | ||
3977 | This function can delete windows if they get too small. The size of | |
3978 | fixed size windows is not altered by this function. */) | |
3979 | (size, horizontal) | |
3980 | Lisp_Object size, horizontal; | |
3981 | { | |
3982 | CHECK_NUMBER (size); | |
3983 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3984 | |
eeca6f6f | 3985 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3986 | |
7ab12479 JB |
3987 | return Qnil; |
3988 | } | |
3989 | ||
3990 | int | |
3991 | window_height (window) | |
3992 | Lisp_Object window; | |
3993 | { | |
3994 | register struct window *p = XWINDOW (window); | |
949cf20f | 3995 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3996 | } |
3997 | ||
3998 | int | |
3999 | window_width (window) | |
4000 | Lisp_Object window; | |
4001 | { | |
4002 | register struct window *p = XWINDOW (window); | |
949cf20f | 4003 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4004 | } |
4005 | ||
177c0ea7 | 4006 | |
7ab12479 | 4007 | #define CURBEG(w) \ |
5afc696a | 4008 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4009 | |
4010 | #define CURSIZE(w) \ | |
5afc696a | 4011 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 4012 | |
233a4a2c | 4013 | |
047aaeb9 MR |
4014 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
4015 | horizontally; zero means do it vertically. | |
f95284d2 | 4016 | |
5afc696a | 4017 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 4018 | request. If they become too small in the process, they may be |
56ebfae2 | 4019 | deleted. */ |
7ab12479 | 4020 | |
f984d4fc | 4021 | static void |
56ebfae2 | 4022 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4023 | Lisp_Object window; |
56ebfae2 | 4024 | int delta, horiz_flag; |
7ab12479 | 4025 | { |
86c8e823 | 4026 | Lisp_Object parent, next, prev; |
233a4a2c | 4027 | struct window *p; |
3578db3c KR |
4028 | Lisp_Object *sizep; |
4029 | int maximum; | |
5e14b1fc | 4030 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4031 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4032 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4033 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4034 | |
233a4a2c | 4035 | /* Give up if this window cannot be resized. */ |
5afc696a | 4036 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4037 | error ("Window is not resizable"); |
4038 | ||
4039 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4040 | while (1) |
4041 | { | |
4042 | p = XWINDOW (window); | |
4043 | parent = p->parent; | |
177c0ea7 | 4044 | |
265a9e55 | 4045 | if (NILP (parent)) |
7ab12479 | 4046 | { |
5afc696a | 4047 | if (horiz_flag) |
7ab12479 JB |
4048 | error ("No other window to side of this one"); |
4049 | break; | |
4050 | } | |
177c0ea7 | 4051 | |
5afc696a | 4052 | if (horiz_flag |
233a4a2c | 4053 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4054 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4055 | break; |
177c0ea7 | 4056 | |
7ab12479 JB |
4057 | window = parent; |
4058 | } | |
4059 | ||
05c2896a | 4060 | sizep = &CURSIZE (window); |
7ab12479 | 4061 | |
7ab12479 JB |
4062 | { |
4063 | register int maxdelta; | |
7ab12479 | 4064 | |
f95284d2 RS |
4065 | /* Compute the maximum size increment this window can have. */ |
4066 | ||
56ebfae2 RS |
4067 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4068 | /* This is a main window followed by a minibuffer. */ | |
4069 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4070 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4071 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4072 | /* This is a minibuffer following a main window. */ |
4073 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4074 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4075 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4076 | /* This is a frame with only one window, a minibuffer-only |
4077 | or a minibufferless frame. */ | |
4078 | : (delta = 0)); | |
7ab12479 JB |
4079 | |
4080 | if (delta > maxdelta) | |
4081 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4082 | the full frame, or make the only window aside from the |
4083 | minibuffer the full frame. */ | |
7ab12479 | 4084 | delta = maxdelta; |
6b54027b | 4085 | } |
d5783c40 | 4086 | |
047aaeb9 MR |
4087 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4088 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4089 | { |
543f5fb1 | 4090 | delete_window (window); |
d5783c40 | 4091 | return; |
6b54027b RS |
4092 | } |
4093 | ||
4094 | if (delta == 0) | |
4095 | return; | |
7ab12479 | 4096 | |
f95284d2 | 4097 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4098 | maximum = 0; |
9beb8baa | 4099 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4100 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4101 | horiz_flag, 0, 0, 0); |
9beb8baa | 4102 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4103 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4104 | horiz_flag, 0, 0, 0); |
db98a733 | 4105 | |
f95284d2 | 4106 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4107 | if (delta <= maximum) |
7ab12479 | 4108 | { |
db98a733 RS |
4109 | Lisp_Object first_unaffected; |
4110 | Lisp_Object first_affected; | |
233a4a2c | 4111 | int fixed_p; |
db98a733 RS |
4112 | |
4113 | next = p->next; | |
4114 | prev = p->prev; | |
4115 | first_affected = window; | |
4116 | /* Look at one sibling at a time, | |
4117 | moving away from this window in both directions alternately, | |
4118 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4119 | while (delta != 0 |
56ebfae2 | 4120 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4121 | { |
db98a733 RS |
4122 | if (! NILP (next)) |
4123 | { | |
c1636aa6 | 4124 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4125 | - window_min_size (XWINDOW (next), horiz_flag, |
4126 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4127 | if (!fixed_p) |
4128 | { | |
4129 | if (this_one > delta) | |
4130 | this_one = delta; | |
177c0ea7 | 4131 | |
233a4a2c | 4132 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4133 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4134 | |
233a4a2c GM |
4135 | delta -= this_one; |
4136 | } | |
177c0ea7 | 4137 | |
db98a733 RS |
4138 | next = XWINDOW (next)->next; |
4139 | } | |
177c0ea7 | 4140 | |
db98a733 RS |
4141 | if (delta == 0) |
4142 | break; | |
177c0ea7 | 4143 | |
56ebfae2 | 4144 | if (! NILP (prev)) |
db98a733 | 4145 | { |
c1636aa6 | 4146 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4147 | - window_min_size (XWINDOW (prev), horiz_flag, |
4148 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4149 | if (!fixed_p) |
4150 | { | |
4151 | if (this_one > delta) | |
4152 | this_one = delta; | |
177c0ea7 | 4153 | |
233a4a2c | 4154 | first_affected = prev; |
177c0ea7 | 4155 | |
233a4a2c | 4156 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4157 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4158 | |
4159 | delta -= this_one; | |
4160 | } | |
177c0ea7 | 4161 | |
db98a733 RS |
4162 | prev = XWINDOW (prev)->prev; |
4163 | } | |
4164 | } | |
4165 | ||
233a4a2c GM |
4166 | xassert (delta == 0); |
4167 | ||
db98a733 RS |
4168 | /* Now recalculate the edge positions of all the windows affected, |
4169 | based on the new sizes. */ | |
4170 | first_unaffected = next; | |
4171 | prev = first_affected; | |
4172 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4173 | prev = next, next = XWINDOW (next)->next) | |
4174 | { | |
3578db3c | 4175 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4176 | /* This does not change size of NEXT, |
4177 | but it propagates the new top edge to its children */ | |
4178 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4179 | } | |
7ab12479 JB |
4180 | } |
4181 | else | |
4182 | { | |
4183 | register int delta1; | |
4184 | register int opht = (*sizefun) (parent); | |
4185 | ||
3578db3c | 4186 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4187 | { |
4188 | /* If trying to grow this window to or beyond size of the parent, | |
4189 | just delete all the sibling windows. */ | |
dc1ab1ee | 4190 | Lisp_Object start, tem, next; |
daf516d3 | 4191 | |
dc1ab1ee RS |
4192 | start = XWINDOW (parent)->vchild; |
4193 | if (NILP (start)) | |
4194 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4195 | |
dc1ab1ee RS |
4196 | /* Delete any siblings that come after WINDOW. */ |
4197 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4198 | while (! NILP (tem)) |
4199 | { | |
4200 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4201 | delete_window (tem); |
4202 | tem = next; | |
4203 | } | |
4204 | ||
4205 | /* Delete any siblings that come after WINDOW. | |
4206 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4207 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4208 | tem = start; |
4209 | while (! EQ (tem, window)) | |
4210 | { | |
4211 | next = XWINDOW (tem)->next; | |
4212 | delete_window (tem); | |
daf516d3 RS |
4213 | tem = next; |
4214 | } | |
4215 | } | |
7ab12479 | 4216 | else |
233a4a2c GM |
4217 | { |
4218 | /* Otherwise, make delta1 just right so that if we add | |
4219 | delta1 lines to this window and to the parent, and then | |
4220 | shrink the parent back to its original size, the new | |
4221 | proportional size of this window will increase by delta. | |
4222 | ||
4223 | The function size_window will compute the new height h' | |
4224 | of the window from delta1 as: | |
177c0ea7 | 4225 | |
233a4a2c GM |
4226 | e = delta1/n |
4227 | x = delta1 - delta1/n * n for the 1st resizable child | |
4228 | h' = h + e + x | |
4229 | ||
4230 | where n is the number of children that can be resized. | |
4231 | We can ignore x by choosing a delta1 that is a multiple of | |
4232 | n. We want the height of this window to come out as | |
177c0ea7 | 4233 | |
233a4a2c GM |
4234 | h' = h + delta |
4235 | ||
4236 | So, delta1 must be | |
177c0ea7 | 4237 | |
233a4a2c GM |
4238 | h + e = h + delta |
4239 | delta1/n = delta | |
4240 | delta1 = n * delta. | |
4241 | ||
a5731348 | 4242 | The number of children n equals the number of resizable |
233a4a2c | 4243 | children of this window + 1 because we know window itself |
04bf5b65 | 4244 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4245 | |
4246 | This reasoning is not correct when other windows become too | |
4247 | small and shrink_windows refuses to delete them. Below we | |
4248 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4249 | |
4250 | struct window *w = XWINDOW (window); | |
4251 | Lisp_Object s; | |
4252 | int n = 1; | |
4253 | ||
9beb8baa | 4254 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4255 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4256 | ++n; |
9beb8baa | 4257 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4258 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4259 | ++n; |
4260 | ||
4261 | delta1 = n * delta; | |
7ab12479 | 4262 | |
daf516d3 RS |
4263 | /* Add delta1 lines or columns to this window, and to the parent, |
4264 | keeping things consistent while not affecting siblings. */ | |
4265 | XSETINT (CURSIZE (parent), opht + delta1); | |
4266 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4267 | ||
4268 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4269 | shrinking this window and siblings proportionately. This |
4270 | brings parent back to correct size. Delta1 was calculated | |
4271 | so this makes this window the desired size, taking it all | |
4272 | out of the siblings. | |
4273 | ||
4274 | Temporarily set resize_proportionally to Qt to assure that, | |
4275 | if necessary, shrink_windows deletes smaller windows rather | |
4276 | than shrink this window. */ | |
4277 | w->resize_proportionally = Qt; | |
daf516d3 | 4278 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4279 | w->resize_proportionally = Qnil; |
daf516d3 | 4280 | } |
7ab12479 JB |
4281 | } |
4282 | ||
d834a2e9 | 4283 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4284 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4285 | |
4286 | /* Adjust glyph matrices. */ | |
4287 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4288 | } |
c1636aa6 | 4289 | |
0d384044 RS |
4290 | |
4291 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4292 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4293 | zero means adjust the height, moving the bottom edge. | |
4294 | ||
4295 | Following siblings of the selected window are resized to fulfill | |
4296 | the size request. If they become too small in the process, they | |
4297 | are not deleted; instead, we signal an error. */ | |
4298 | ||
4299 | static void | |
4300 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4301 | Lisp_Object window; | |
4302 | int delta, horiz_flag; | |
4303 | { | |
4304 | Lisp_Object parent, child; | |
4305 | struct window *p; | |
4306 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4307 | int delcount = window_deletion_count; | |
4308 | ||
0d384044 RS |
4309 | CHECK_WINDOW (window); |
4310 | ||
4311 | /* Give up if this window cannot be resized. */ | |
4312 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4313 | error ("Window is not resizable"); | |
4314 | ||
4315 | while (1) | |
4316 | { | |
bd99e242 RS |
4317 | Lisp_Object first_parallel = Qnil; |
4318 | ||
c32de52a | 4319 | if (NILP (window)) |
0d384044 | 4320 | { |
5fe0b054 RS |
4321 | /* This happens if WINDOW on the previous iteration was |
4322 | at top level of the window tree. */ | |
0d384044 | 4323 | Fset_window_configuration (old_config); |
c32de52a | 4324 | error ("Specified window edge is fixed"); |
0d384044 RS |
4325 | } |
4326 | ||
c32de52a RS |
4327 | p = XWINDOW (window); |
4328 | parent = p->parent; | |
4329 | ||
bd99e242 RS |
4330 | /* See if this level has windows in parallel in the specified |
4331 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4332 | if (horiz_flag) | |
4333 | { | |
4334 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4335 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4336 | else if (NILP (parent) && !NILP (p->next)) |
4337 | { | |
4338 | /* Handle the vertical chain of main window and minibuffer | |
4339 | which has no parent. */ | |
4340 | first_parallel = window; | |
4341 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4342 | first_parallel = XWINDOW (first_parallel)->prev; | |
4343 | } | |
bd99e242 RS |
4344 | } |
4345 | else | |
4346 | { | |
4347 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4348 | first_parallel = XWINDOW (parent)->hchild; | |
4349 | } | |
4350 | ||
c32de52a | 4351 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4352 | and this window is the last one, and there is no higher level, |
4353 | its trailing edge is fixed. */ | |
4354 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4355 | && NILP (parent)) | |
c32de52a RS |
4356 | { |
4357 | Fset_window_configuration (old_config); | |
4358 | error ("Specified window edge is fixed"); | |
4359 | } | |
4360 | ||
0d384044 RS |
4361 | /* Don't make this window too small. */ |
4362 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4363 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4364 | { |
4365 | Fset_window_configuration (old_config); | |
4366 | error ("Cannot adjust window size as specified"); | |
4367 | } | |
4368 | ||
4369 | /* Clear out some redisplay caches. */ | |
4370 | XSETFASTINT (p->last_modified, 0); | |
4371 | XSETFASTINT (p->last_overlay_modified, 0); | |
4372 | ||
4373 | /* Adjust this window's edge. */ | |
4374 | XSETINT (CURSIZE (window), | |
4375 | XINT (CURSIZE (window)) + delta); | |
4376 | ||
4377 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4378 | make them smaller, and exit the loop. |
4379 | ||
0d384044 RS |
4380 | (If we reach the top of the tree and can never do this, |
4381 | we will fail and report an error, above.) */ | |
bd99e242 | 4382 | if (NILP (first_parallel)) |
0d384044 | 4383 | { |
c32de52a | 4384 | if (!NILP (p->next)) |
0d384044 | 4385 | { |
e99c7521 JD |
4386 | /* This may happen for the minibuffer. In that case |
4387 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4388 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4389 | { |
4390 | Fset_window_configuration (old_config); | |
4391 | error ("Cannot adjust window size as specified"); | |
4392 | } | |
4393 | ||
0d384044 RS |
4394 | XSETINT (CURBEG (p->next), |
4395 | XINT (CURBEG (p->next)) + delta); | |
4396 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4397 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4398 | break; |
4399 | } | |
4400 | } | |
4401 | else | |
4402 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4403 | Change the size of the other siblings. */ | |
bd99e242 | 4404 | for (child = first_parallel; |
0d384044 RS |
4405 | ! NILP (child); |
4406 | child = XWINDOW (child)->next) | |
4407 | if (! EQ (child, window)) | |
4408 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4409 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4410 | |
4411 | window = parent; | |
4412 | } | |
4413 | ||
4414 | /* If we made a window so small it got deleted, | |
4415 | we failed. Report failure. */ | |
4416 | if (delcount != window_deletion_count) | |
4417 | { | |
4418 | Fset_window_configuration (old_config); | |
4419 | error ("Cannot adjust window size as specified"); | |
4420 | } | |
4421 | ||
4422 | /* Adjust glyph matrices. */ | |
4423 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4424 | } | |
4425 | ||
7ab12479 JB |
4426 | #undef CURBEG |
4427 | #undef CURSIZE | |
4428 | ||
0d384044 RS |
4429 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4430 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4431 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4432 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4433 | Otherwise, adjust the height, moving the bottom edge. |
4434 | ||
4435 | Following siblings of the selected window are resized to fulfill | |
4436 | the size request. If they become too small in the process, they | |
4437 | are not deleted; instead, we signal an error. */) | |
4438 | (window, delta, horizontal) | |
4439 | Lisp_Object window, delta, horizontal; | |
4440 | { | |
4441 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4442 | if (NILP (window)) |
4443 | window = selected_window; | |
0d384044 RS |
4444 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4445 | ||
eeca6f6f SM |
4446 | run_window_configuration_change_hook |
4447 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4448 | |
4449 | return Qnil; | |
4450 | } | |
4451 | ||
5500c422 | 4452 | |
f984d4fc GM |
4453 | \f |
4454 | /*********************************************************************** | |
4455 | Resizing Mini-Windows | |
4456 | ***********************************************************************/ | |
4457 | ||
4458 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4459 | |
43b4a21f GM |
4460 | enum save_restore_action |
4461 | { | |
4462 | CHECK_ORIG_SIZES, | |
4463 | SAVE_ORIG_SIZES, | |
4464 | RESTORE_ORIG_SIZES | |
4465 | }; | |
4466 | ||
177c0ea7 | 4467 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4468 | enum save_restore_action)); |
f984d4fc GM |
4469 | |
4470 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4471 | from lowest windows first. */ | |
4472 | ||
4473 | static void | |
4474 | shrink_window_lowest_first (w, height) | |
4475 | struct window *w; | |
4476 | int height; | |
4477 | { | |
4478 | struct window *c; | |
4479 | Lisp_Object child; | |
4480 | int old_height; | |
4481 | ||
4482 | xassert (!MINI_WINDOW_P (w)); | |
4483 | ||
4484 | /* Set redisplay hints. */ | |
4485 | XSETFASTINT (w->last_modified, 0); | |
4486 | XSETFASTINT (w->last_overlay_modified, 0); | |
4487 | windows_or_buffers_changed++; | |
4488 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4489 | ||
949cf20f KS |
4490 | old_height = XFASTINT (w->total_lines); |
4491 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4492 | |
4493 | if (!NILP (w->hchild)) | |
4494 | { | |
4495 | for (child = w->hchild; !NILP (child); child = c->next) | |
4496 | { | |
4497 | c = XWINDOW (child); | |
949cf20f | 4498 | c->top_line = w->top_line; |
f984d4fc GM |
4499 | shrink_window_lowest_first (c, height); |
4500 | } | |
4501 | } | |
4502 | else if (!NILP (w->vchild)) | |
4503 | { | |
4504 | Lisp_Object last_child; | |
4505 | int delta = old_height - height; | |
4506 | int last_top; | |
6bbd7a29 GM |
4507 | |
4508 | last_child = Qnil; | |
177c0ea7 | 4509 | |
f984d4fc GM |
4510 | /* Find the last child. We are taking space from lowest windows |
4511 | first, so we iterate over children from the last child | |
4512 | backwards. */ | |
9beb8baa | 4513 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4514 | last_child = child; |
4515 | ||
047aaeb9 | 4516 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4517 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4518 | { | |
4519 | int this_one; | |
177c0ea7 | 4520 | |
f984d4fc | 4521 | c = XWINDOW (child); |
047aaeb9 | 4522 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4523 | |
4524 | if (this_one > delta) | |
4525 | this_one = delta; | |
4526 | ||
949cf20f | 4527 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4528 | delta -= this_one; |
4529 | } | |
4530 | ||
4531 | /* Compute new positions. */ | |
949cf20f | 4532 | last_top = XINT (w->top_line); |
f984d4fc GM |
4533 | for (child = w->vchild; !NILP (child); child = c->next) |
4534 | { | |
4535 | c = XWINDOW (child); | |
949cf20f KS |
4536 | c->top_line = make_number (last_top); |
4537 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4538 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4539 | } |
4540 | } | |
4541 | } | |
4542 | ||
4543 | ||
43b4a21f GM |
4544 | /* Save, restore, or check positions and sizes in the window tree |
4545 | rooted at W. ACTION says what to do. | |
f984d4fc | 4546 | |
949cf20f KS |
4547 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4548 | orig_total_lines members are valid for all windows in the window | |
4549 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4550 | |
43b4a21f | 4551 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4552 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4553 | |
949cf20f KS |
4554 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4555 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4556 | |
4557 | static int | |
4558 | save_restore_orig_size (w, action) | |
f984d4fc | 4559 | struct window *w; |
43b4a21f | 4560 | enum save_restore_action action; |
f984d4fc | 4561 | { |
43b4a21f GM |
4562 | int success_p = 1; |
4563 | ||
f984d4fc GM |
4564 | while (w) |
4565 | { | |
4566 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4567 | { |
4568 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4569 | success_p = 0; | |
4570 | } | |
f984d4fc | 4571 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4572 | { |
4573 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4574 | success_p = 0; | |
4575 | } | |
177c0ea7 | 4576 | |
43b4a21f | 4577 | switch (action) |
f984d4fc | 4578 | { |
43b4a21f | 4579 | case CHECK_ORIG_SIZES: |
949cf20f | 4580 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4581 | return 0; |
4582 | break; | |
4583 | ||
4584 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4585 | w->orig_top_line = w->top_line; |
4586 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4587 | XSETFASTINT (w->last_modified, 0); |
4588 | XSETFASTINT (w->last_overlay_modified, 0); | |
4589 | break; | |
4590 | ||
4591 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4592 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4593 | w->top_line = w->orig_top_line; | |
4594 | w->total_lines = w->orig_total_lines; | |
4595 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4596 | XSETFASTINT (w->last_modified, 0); |
4597 | XSETFASTINT (w->last_overlay_modified, 0); | |
4598 | break; | |
4599 | ||
4600 | default: | |
4601 | abort (); | |
f984d4fc | 4602 | } |
43b4a21f | 4603 | |
f984d4fc GM |
4604 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4605 | } | |
43b4a21f GM |
4606 | |
4607 | return success_p; | |
f984d4fc GM |
4608 | } |
4609 | ||
4610 | ||
4611 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4612 | without deleting other windows. */ | |
4613 | ||
4614 | void | |
4615 | grow_mini_window (w, delta) | |
4616 | struct window *w; | |
4617 | int delta; | |
4618 | { | |
4619 | struct frame *f = XFRAME (w->frame); | |
4620 | struct window *root; | |
177c0ea7 | 4621 | |
f984d4fc GM |
4622 | xassert (MINI_WINDOW_P (w)); |
4623 | xassert (delta >= 0); | |
177c0ea7 | 4624 | |
f984d4fc GM |
4625 | /* Compute how much we can enlarge the mini-window without deleting |
4626 | other windows. */ | |
4627 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4628 | if (delta) | |
4629 | { | |
047aaeb9 | 4630 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4631 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4632 | /* Note that the root window may already be smaller than |
eafa3196 | 4633 | min_height. */ |
949cf20f | 4634 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4635 | } |
177c0ea7 | 4636 | |
f984d4fc GM |
4637 | if (delta) |
4638 | { | |
4639 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4640 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4641 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4642 | |
4643 | /* Shrink other windows. */ | |
949cf20f | 4644 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4645 | |
4646 | /* Grow the mini-window. */ | |
949cf20f KS |
4647 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4648 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4649 | XSETFASTINT (w->last_modified, 0); |
4650 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4651 | |
f984d4fc GM |
4652 | adjust_glyphs (f); |
4653 | } | |
4654 | } | |
4655 | ||
4656 | ||
86c8e823 GM |
4657 | /* Shrink mini-window W. If there is recorded info about window sizes |
4658 | before a call to grow_mini_window, restore recorded window sizes. | |
4659 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4660 | line. */ | |
f984d4fc GM |
4661 | |
4662 | void | |
4663 | shrink_mini_window (w) | |
4664 | struct window *w; | |
4665 | { | |
4666 | struct frame *f = XFRAME (w->frame); | |
4667 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4668 | ||
43b4a21f | 4669 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4670 | { |
43b4a21f | 4671 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4672 | adjust_glyphs (f); |
4673 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4674 | windows_or_buffers_changed = 1; | |
4675 | } | |
949cf20f | 4676 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4677 | { |
0130fe1a GM |
4678 | /* Distribute the additional lines of the mini-window |
4679 | among the other windows. */ | |
86c8e823 GM |
4680 | Lisp_Object window; |
4681 | XSETWINDOW (window, w); | |
56ebfae2 | 4682 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4683 | } |
f984d4fc GM |
4684 | } |
4685 | ||
4686 | ||
4687 | \f | |
5500c422 GM |
4688 | /* Mark window cursors off for all windows in the window tree rooted |
4689 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4690 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4691 | the frame are cleared. */ | |
4692 | ||
4693 | void | |
4694 | mark_window_cursors_off (w) | |
4695 | struct window *w; | |
4696 | { | |
4697 | while (w) | |
4698 | { | |
4699 | if (!NILP (w->hchild)) | |
4700 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4701 | else if (!NILP (w->vchild)) | |
4702 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4703 | else | |
4704 | w->phys_cursor_on_p = 0; | |
4705 | ||
4706 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4707 | } | |
4708 | } | |
4709 | ||
4710 | ||
e9c195b1 | 4711 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4712 | |
4713 | int | |
4714 | window_internal_height (w) | |
4715 | struct window *w; | |
4716 | { | |
949cf20f | 4717 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4718 | |
e9c195b1 GM |
4719 | if (!MINI_WINDOW_P (w)) |
4720 | { | |
4721 | if (!NILP (w->parent) | |
4722 | || !NILP (w->vchild) | |
4723 | || !NILP (w->hchild) | |
4724 | || !NILP (w->next) | |
4725 | || !NILP (w->prev) | |
4726 | || WINDOW_WANTS_MODELINE_P (w)) | |
4727 | --ht; | |
7ab12479 | 4728 | |
e9c195b1 GM |
4729 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4730 | --ht; | |
4731 | } | |
7ab12479 JB |
4732 | |
4733 | return ht; | |
4734 | } | |
4735 | ||
535e0b8e JB |
4736 | |
4737 | /* Return the number of columns in W. | |
a3c87d4e | 4738 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4739 | separating W from the sibling to its right. */ |
5500c422 | 4740 | |
535e0b8e | 4741 | int |
949cf20f | 4742 | window_box_text_cols (w) |
535e0b8e JB |
4743 | struct window *w; |
4744 | { | |
5500c422 | 4745 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4746 | int width = XINT (w->total_cols); |
535e0b8e | 4747 | |
949cf20f | 4748 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4749 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4750 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4751 | else if (!FRAME_WINDOW_P (f) | |
4752 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4753 | /* The column of `|' characters separating side-by-side windows |
4754 | occupies one column only. */ | |
4755 | width -= 1; | |
4756 | ||
5500c422 | 4757 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4758 | /* On window-systems, fringes and display margins cannot be |
4759 | used for normal text. */ | |
4760 | width -= (WINDOW_FRINGE_COLS (w) | |
4761 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4762 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4763 | |
4764 | return width; | |
535e0b8e JB |
4765 | } |
4766 | ||
5500c422 GM |
4767 | \f |
4768 | /************************************************************************ | |
4769 | Window Scrolling | |
4770 | ***********************************************************************/ | |
535e0b8e | 4771 | |
5500c422 | 4772 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4773 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4774 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4775 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4776 | means don't signal an error if we try to move over BEGV or ZV, | |
4777 | respectively. */ | |
7ab12479 | 4778 | |
101d1605 RS |
4779 | static void |
4780 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4781 | Lisp_Object window; |
4782 | int n; | |
101d1605 | 4783 | int whole; |
f8026fd8 | 4784 | int noerror; |
5500c422 | 4785 | { |
cba59f77 RS |
4786 | immediate_quit = 1; |
4787 | ||
5500c422 GM |
4788 | /* If we must, use the pixel-based version which is much slower than |
4789 | the line-based one but can handle varying line heights. */ | |
4790 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4791 | window_scroll_pixel_based (window, n, whole, noerror); | |
4792 | else | |
4793 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4794 | |
4795 | immediate_quit = 0; | |
5500c422 GM |
4796 | } |
4797 | ||
4798 | ||
4799 | /* Implementation of window_scroll that works based on pixel line | |
4800 | heights. See the comment of window_scroll for parameter | |
4801 | descriptions. */ | |
4802 | ||
4803 | static void | |
4804 | window_scroll_pixel_based (window, n, whole, noerror) | |
4805 | Lisp_Object window; | |
4806 | int n; | |
4807 | int whole; | |
4808 | int noerror; | |
4809 | { | |
4810 | struct it it; | |
4811 | struct window *w = XWINDOW (window); | |
4812 | struct text_pos start; | |
5500c422 | 4813 | int this_scroll_margin; |
9d14503e | 4814 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4815 | int vscrolled = 0; |
5a857365 | 4816 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4817 | |
4818 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4819 | |
5500c422 | 4820 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4821 | the screen. Allow PT to be partially visible, otherwise |
4822 | something like (scroll-down 1) with PT in the line before | |
4823 | the partially visible one would recenter. */ | |
5a857365 KS |
4824 | |
4825 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4826 | { |
4827 | /* Move backward half the height of the window. Performance note: | |
4828 | vmotion used here is about 10% faster, but would give wrong | |
4829 | results for variable height lines. */ | |
4830 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4831 | it.current_y = it.last_visible_y; | |
f204989e | 4832 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4833 | |
5500c422 GM |
4834 | /* The function move_iterator_vertically may move over more than |
4835 | the specified y-distance. If it->w is small, e.g. a | |
4836 | mini-buffer window, we may end up in front of the window's | |
4837 | display area. This is the case when Start displaying at the | |
4838 | start of the line containing PT in this case. */ | |
4839 | if (it.current_y <= 0) | |
4840 | { | |
4841 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4842 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4843 | it.current_y = 0; |
4844 | } | |
4845 | ||
4846 | start = it.current.pos; | |
4847 | } | |
e56263e5 KS |
4848 | else if (auto_window_vscroll_p) |
4849 | { | |
5a857365 | 4850 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4851 | { |
4852 | int px; | |
4853 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4854 | if (whole) | |
e856c216 KS |
4855 | dy = max ((window_box_height (w) |
4856 | - next_screen_context_lines * dy), | |
4857 | dy); | |
e56263e5 KS |
4858 | dy *= n; |
4859 | ||
5a857365 | 4860 | if (n < 0) |
e56263e5 | 4861 | { |
5a857365 KS |
4862 | /* Only vscroll backwards if already vscrolled forwards. */ |
4863 | if (w->vscroll < 0 && rtop > 0) | |
4864 | { | |
4865 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4866 | Fset_window_vscroll (window, make_number (px), Qt); | |
4867 | return; | |
4868 | } | |
e56263e5 | 4869 | } |
5a857365 | 4870 | if (n > 0) |
e56263e5 | 4871 | { |
5a857365 KS |
4872 | /* Do vscroll if already vscrolled or only display line. */ |
4873 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4874 | { | |
4875 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4876 | Fset_window_vscroll (window, make_number (px), Qt); | |
4877 | return; | |
4878 | } | |
4879 | ||
4880 | /* Maybe modify window start instead of scrolling. */ | |
4881 | if (rbot > 0 || w->vscroll < 0) | |
4882 | { | |
4883 | int spos; | |
4884 | ||
4885 | Fset_window_vscroll (window, make_number (0), Qt); | |
4886 | /* If there are other text lines above the current row, | |
4887 | move window start to current row. Else to next row. */ | |
4888 | if (rbot > 0) | |
4889 | spos = XINT (Fline_beginning_position (Qnil)); | |
4890 | else | |
4891 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4892 | set_marker_restricted (w->start, make_number (spos), | |
4893 | w->buffer); | |
4894 | w->start_at_line_beg = Qt; | |
4895 | w->update_mode_line = Qt; | |
4896 | XSETFASTINT (w->last_modified, 0); | |
4897 | XSETFASTINT (w->last_overlay_modified, 0); | |
4898 | /* Set force_start so that redisplay_window will run the | |
4899 | window-scroll-functions. */ | |
4900 | w->force_start = Qt; | |
4901 | return; | |
4902 | } | |
e56263e5 KS |
4903 | } |
4904 | } | |
5a857365 | 4905 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4906 | Fset_window_vscroll (window, make_number (0), Qt); |
4907 | } | |
5500c422 | 4908 | |
d0c38d63 | 4909 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4910 | point in the same window line as it is now, so get that line. */ |
4911 | if (!NILP (Vscroll_preserve_screen_position)) | |
4912 | { | |
c525d842 CY |
4913 | /* We preserve the goal pixel coordinate across consecutive |
4914 | calls to scroll-up or scroll-down. This avoids the | |
4915 | possibility of point becoming "stuck" on a tall line when | |
4916 | scrolling by one line. */ | |
66fe93d1 | 4917 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
4918 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
4919 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
4920 | { |
4921 | start_display (&it, w, start); | |
4922 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4923 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4924 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4925 | } |
5500c422 GM |
4926 | } |
4927 | else | |
c876b227 SM |
4928 | window_scroll_pixel_based_preserve_y |
4929 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4930 | |
4931 | /* Move iterator it from start the specified distance forward or | |
4932 | backward. The result is the new window start. */ | |
4933 | start_display (&it, w, start); | |
4934 | if (whole) | |
4935 | { | |
e856c216 KS |
4936 | int start_pos = IT_CHARPOS (it); |
4937 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4938 | dy = max ((window_box_height (w) | |
4939 | - next_screen_context_lines * dy), | |
4940 | dy) * n; | |
d72340d4 GM |
4941 | |
4942 | /* Note that move_it_vertically always moves the iterator to the | |
4943 | start of a line. So, if the last line doesn't have a newline, | |
4944 | we would end up at the start of the line ending at ZV. */ | |
4945 | if (dy <= 0) | |
e856c216 KS |
4946 | { |
4947 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4948 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4949 | looking at an image that is taller that the window height. */ |
4950 | while (start_pos == IT_CHARPOS (it) | |
4951 | && start_pos > BEGV) | |
4952 | move_it_by_lines (&it, -1, 1); | |
4953 | } | |
d72340d4 | 4954 | else if (dy > 0) |
bed83ee4 | 4955 | { |
bed83ee4 KS |
4956 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4957 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4958 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4959 | looking at an image that is taller that the window height. */ |
4960 | while (start_pos == IT_CHARPOS (it) | |
4961 | && start_pos < ZV) | |
4962 | move_it_by_lines (&it, 1, 1); | |
4963 | } | |
5500c422 GM |
4964 | } |
4965 | else | |
4966 | move_it_by_lines (&it, n, 1); | |
4967 | ||
96ae58c8 RS |
4968 | /* We failed if we find ZV is already on the screen (scrolling up, |
4969 | means there's nothing past the end), or if we can't start any | |
4970 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4971 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4972 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4973 | { |
5cdb3cf3 MB |
4974 | if (IT_CHARPOS (it) == ZV) |
4975 | { | |
07ce8b53 RS |
4976 | if (it.current_y < it.last_visible_y |
4977 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4978 | > it.last_visible_y)) |
a74eca50 GM |
4979 | { |
4980 | /* The last line was only partially visible, make it fully | |
4981 | visible. */ | |
4982 | w->vscroll = (it.last_visible_y | |
4983 | - it.current_y + it.max_ascent + it.max_descent); | |
4984 | adjust_glyphs (it.f); | |
4985 | } | |
5cdb3cf3 MB |
4986 | else if (noerror) |
4987 | return; | |
cf402f3f | 4988 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 4989 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 4990 | else |
ba96a5cf | 4991 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 4992 | } |
5500c422 | 4993 | else |
5cdb3cf3 MB |
4994 | { |
4995 | if (w->vscroll != 0) | |
4996 | /* The first line was only partially visible, make it fully | |
4997 | visible. */ | |
4998 | w->vscroll = 0; | |
4999 | else if (noerror) | |
5000 | return; | |
5001 | else | |
ba96a5cf | 5002 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5003 | } |
5004 | ||
5005 | /* If control gets here, then we vscrolled. */ | |
5006 | ||
5007 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5008 | ||
5009 | /* Don't try to change the window start below. */ | |
5010 | vscrolled = 1; | |
5500c422 GM |
5011 | } |
5012 | ||
5cdb3cf3 MB |
5013 | if (! vscrolled) |
5014 | { | |
dad67609 RS |
5015 | int pos = IT_CHARPOS (it); |
5016 | int bytepos; | |
e68def1e AS |
5017 | |
5018 | /* If in the middle of a multi-glyph character move forward to | |
5019 | the next character. */ | |
5020 | if (in_display_vector_p (&it)) | |
5021 | { | |
5022 | ++pos; | |
5023 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5024 | } | |
5025 | ||
5cdb3cf3 | 5026 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5027 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5028 | w->buffer); |
dad67609 RS |
5029 | bytepos = XMARKER (w->start)->bytepos; |
5030 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5031 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5032 | w->update_mode_line = Qt; |
5033 | XSETFASTINT (w->last_modified, 0); | |
5034 | XSETFASTINT (w->last_overlay_modified, 0); | |
5035 | /* Set force_start so that redisplay_window will run the | |
5036 | window-scroll-functions. */ | |
5037 | w->force_start = Qt; | |
5038 | } | |
177c0ea7 | 5039 | |
dc297565 RS |
5040 | /* The rest of this function uses current_y in a nonstandard way, |
5041 | not including the height of the header line if any. */ | |
5500c422 | 5042 | it.current_y = it.vpos = 0; |
177c0ea7 | 5043 | |
940f53e5 RS |
5044 | /* Move PT out of scroll margins. |
5045 | This code wants current_y to be zero at the window start position | |
5046 | even if there is a header line. */ | |
5047 | this_scroll_margin = max (0, scroll_margin); | |
5048 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5049 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5050 | ||
5051 | if (n > 0) | |
5500c422 | 5052 | { |
940f53e5 RS |
5053 | /* We moved the window start towards ZV, so PT may be now |
5054 | in the scroll margin at the top. */ | |
5055 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5056 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5057 | && (NILP (Vscroll_preserve_screen_position) | |
5058 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5059 | /* We found PT at a legitimate height. Leave it alone. */ |
5060 | ; | |
66fe93d1 | 5061 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5062 | { |
fa3c3426 RS |
5063 | /* If we have a header line, take account of it. |
5064 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5065 | move_it_to (&it, -1, |
5066 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5067 | window_scroll_pixel_based_preserve_y |
5068 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5069 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5070 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5071 | } | |
5072 | else | |
5500c422 | 5073 | { |
5500c422 | 5074 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5075 | { |
5076 | int prev = it.current_y; | |
5077 | move_it_by_lines (&it, 1, 1); | |
5078 | if (prev == it.current_y) | |
5079 | break; | |
5080 | } | |
5500c422 GM |
5081 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5082 | } | |
940f53e5 RS |
5083 | } |
5084 | else if (n < 0) | |
5085 | { | |
5086 | int charpos, bytepos; | |
aed328bf | 5087 | int partial_p; |
940f53e5 | 5088 | |
66fe93d1 LT |
5089 | /* Save our position, for the |
5090 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5091 | charpos = IT_CHARPOS (it); |
5092 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5093 | |
940f53e5 RS |
5094 | /* We moved the window start towards BEGV, so PT may be now |
5095 | in the scroll margin at the bottom. */ | |
5096 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5097 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5098 | - this_scroll_margin - 1), | |
5099 | -1, | |
940f53e5 RS |
5100 | MOVE_TO_POS | MOVE_TO_Y); |
5101 | ||
aed328bf KS |
5102 | /* Save our position, in case it's correct. */ |
5103 | charpos = IT_CHARPOS (it); | |
5104 | bytepos = IT_BYTEPOS (it); | |
5105 | ||
5106 | /* See if point is on a partially visible line at the end. */ | |
5107 | if (it.what == IT_EOB) | |
5108 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5109 | else | |
5110 | { | |
5111 | move_it_by_lines (&it, 1, 1); | |
5112 | partial_p = it.current_y > it.last_visible_y; | |
5113 | } | |
5114 | ||
bdf4ec93 RS |
5115 | if (charpos == PT && !partial_p |
5116 | && (NILP (Vscroll_preserve_screen_position) | |
5117 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5118 | /* We found PT before we found the display margin, so PT is ok. */ |
5119 | ; | |
66fe93d1 | 5120 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5121 | { |
5122 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5123 | start_display (&it, w, start); | |
c525d842 CY |
5124 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5125 | here because we called start_display again and did not | |
5126 | alter it.current_y this time. */ | |
c876b227 SM |
5127 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5128 | window_scroll_pixel_based_preserve_y, -1, | |
5129 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5130 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5131 | } | |
5132 | else | |
5133 | { | |
aed328bf | 5134 | if (partial_p) |
5cdb3cf3 MB |
5135 | /* The last line was only partially visible, so back up two |
5136 | lines to make sure we're on a fully visible line. */ | |
5137 | { | |
5138 | move_it_by_lines (&it, -2, 0); | |
5139 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5140 | } | |
5141 | else | |
5142 | /* No, the position we saved is OK, so use it. */ | |
5143 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5144 | } |
5145 | } | |
5146 | } | |
5147 | ||
5148 | ||
5149 | /* Implementation of window_scroll that works based on screen lines. | |
5150 | See the comment of window_scroll for parameter descriptions. */ | |
5151 | ||
5152 | static void | |
5153 | window_scroll_line_based (window, n, whole, noerror) | |
5154 | Lisp_Object window; | |
5155 | int n; | |
5156 | int whole; | |
5157 | int noerror; | |
7ab12479 JB |
5158 | { |
5159 | register struct window *w = XWINDOW (window); | |
5500c422 | 5160 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5161 | register int pos, pos_byte; |
7ab12479 JB |
5162 | register int ht = window_internal_height (w); |
5163 | register Lisp_Object tem; | |
5164 | int lose; | |
5500c422 | 5165 | Lisp_Object bolp; |
345d45b2 | 5166 | int startpos; |
c876b227 | 5167 | Lisp_Object original_pos = Qnil; |
101d1605 | 5168 | |
d4e7cf01 GM |
5169 | /* If scrolling screen-fulls, compute the number of lines to |
5170 | scroll from the window's height. */ | |
5171 | if (whole) | |
5172 | n *= max (1, ht - next_screen_context_lines); | |
5173 | ||
101d1605 RS |
5174 | startpos = marker_position (w->start); |
5175 | ||
c876b227 SM |
5176 | if (!NILP (Vscroll_preserve_screen_position)) |
5177 | { | |
5178 | if (window_scroll_preserve_vpos <= 0 | |
5179 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) | |
5180 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
5181 | { | |
5182 | struct position posit | |
5183 | = *compute_motion (startpos, 0, 0, 0, | |
5184 | PT, ht, 0, | |
5185 | -1, XINT (w->hscroll), | |
5186 | 0, w); | |
5187 | window_scroll_preserve_vpos = posit.vpos; | |
5188 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5189 | } | |
5190 | ||
5191 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5192 | make_number (window_scroll_preserve_vpos)); | |
5193 | } | |
0a1f771a | 5194 | |
d834a2e9 | 5195 | XSETFASTINT (tem, PT); |
6ffdb539 | 5196 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5197 | |
265a9e55 | 5198 | if (NILP (tem)) |
7ab12479 | 5199 | { |
cd2be1dd | 5200 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5201 | startpos = PT; |
7ab12479 JB |
5202 | } |
5203 | ||
345d45b2 | 5204 | SET_PT (startpos); |
5ce7b543 | 5205 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5206 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5207 | pos = PT; |
b73ea88e | 5208 | pos_byte = PT_BYTE; |
7ab12479 | 5209 | bolp = Fbolp (); |
b73ea88e | 5210 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5211 | |
5212 | if (lose) | |
f8026fd8 JB |
5213 | { |
5214 | if (noerror) | |
5215 | return; | |
5216 | else | |
ba96a5cf | 5217 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5218 | } |
7ab12479 JB |
5219 | |
5220 | if (pos < ZV) | |
7ab12479 | 5221 | { |
0c7da84e RS |
5222 | int this_scroll_margin = scroll_margin; |
5223 | ||
5224 | /* Don't use a scroll margin that is negative or too large. */ | |
5225 | if (this_scroll_margin < 0) | |
5226 | this_scroll_margin = 0; | |
5227 | ||
949cf20f KS |
5228 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5229 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5230 | |
b73ea88e | 5231 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5232 | w->start_at_line_beg = bolp; |
5233 | w->update_mode_line = Qt; | |
d834a2e9 | 5234 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5235 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5236 | /* Set force_start so that redisplay_window will run |
5237 | the window-scroll-functions. */ | |
5238 | w->force_start = Qt; | |
0c7da84e | 5239 | |
bdf4ec93 RS |
5240 | if (!NILP (Vscroll_preserve_screen_position) |
5241 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5242 | { |
b73ea88e | 5243 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5244 | Fvertical_motion (original_pos, window); |
0c7da84e | 5245 | } |
101d1605 RS |
5246 | /* If we scrolled forward, put point enough lines down |
5247 | that it is outside the scroll margin. */ | |
5248 | else if (n > 0) | |
0c7da84e | 5249 | { |
101d1605 RS |
5250 | int top_margin; |
5251 | ||
5252 | if (this_scroll_margin > 0) | |
5253 | { | |
b73ea88e | 5254 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5255 | Fvertical_motion (make_number (this_scroll_margin), window); |
5256 | top_margin = PT; | |
5257 | } | |
5258 | else | |
5259 | top_margin = pos; | |
5260 | ||
5261 | if (top_margin <= opoint) | |
b73ea88e | 5262 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5263 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5264 | { |
b73ea88e | 5265 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5266 | Fvertical_motion (original_pos, window); |
101d1605 | 5267 | } |
9317a85d | 5268 | else |
335406fc | 5269 | SET_PT (top_margin); |
0c7da84e | 5270 | } |
101d1605 | 5271 | else if (n < 0) |
7ab12479 | 5272 | { |
101d1605 RS |
5273 | int bottom_margin; |
5274 | ||
0c7da84e RS |
5275 | /* If we scrolled backward, put point near the end of the window |
5276 | but not within the scroll margin. */ | |
b73ea88e | 5277 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5278 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5279 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5280 | bottom_margin = PT; | |
5281 | else | |
5282 | bottom_margin = PT + 1; | |
5283 | ||
5284 | if (bottom_margin > opoint) | |
b73ea88e | 5285 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5286 | else |
101d1605 | 5287 | { |
5500c422 | 5288 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5289 | { |
b73ea88e | 5290 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5291 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5292 | } |
5293 | else | |
5294 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5295 | } |
7ab12479 JB |
5296 | } |
5297 | } | |
5298 | else | |
f8026fd8 JB |
5299 | { |
5300 | if (noerror) | |
5301 | return; | |
5302 | else | |
ba96a5cf | 5303 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5304 | } |
7ab12479 | 5305 | } |
5500c422 GM |
5306 | |
5307 | ||
5308 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5309 | screen-full which is defined as the height of the window minus | |
5310 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5311 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5312 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5313 | |
5314 | static void | |
5315 | scroll_command (n, direction) | |
5500c422 | 5316 | Lisp_Object n; |
7ab12479 JB |
5317 | int direction; |
5318 | { | |
331379bf | 5319 | int count = SPECPDL_INDEX (); |
7ab12479 | 5320 | |
1ea40aa2 | 5321 | xassert (eabs (direction) == 1); |
5500c422 GM |
5322 | |
5323 | /* If selected window's buffer isn't current, make it current for | |
5324 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5325 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5326 | { |
5327 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5328 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5329 | |
5330 | /* Make redisplay consider other windows than just selected_window. */ | |
5331 | ++windows_or_buffers_changed; | |
95605e15 | 5332 | } |
7ab12479 | 5333 | |
265a9e55 | 5334 | if (NILP (n)) |
d4e7cf01 | 5335 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5336 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5337 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5338 | else |
5339 | { | |
5340 | n = Fprefix_numeric_value (n); | |
101d1605 | 5341 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5342 | } |
95605e15 JB |
5343 | |
5344 | unbind_to (count, Qnil); | |
7ab12479 JB |
5345 | } |
5346 | ||
e0965597 | 5347 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5348 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5349 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5350 | A near full screen is `next-screen-context-lines' less than a full screen. |
5351 | Negative ARG means scroll downward. | |
5352 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5353 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5354 | (arg) | |
413430c5 | 5355 | Lisp_Object arg; |
7ab12479 | 5356 | { |
413430c5 | 5357 | scroll_command (arg, 1); |
7ab12479 JB |
5358 | return Qnil; |
5359 | } | |
5360 | ||
e0965597 | 5361 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5362 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5363 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5364 | A near full screen is `next-screen-context-lines' less than a full screen. |
5365 | Negative ARG means scroll upward. | |
5366 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5367 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5368 | (arg) | |
413430c5 | 5369 | Lisp_Object arg; |
7ab12479 | 5370 | { |
413430c5 | 5371 | scroll_command (arg, -1); |
7ab12479 JB |
5372 | return Qnil; |
5373 | } | |
ccd0664b RS |
5374 | \f |
5375 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5376 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5377 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5378 | showing that buffer is used. |
5379 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5380 | specifies the window. This takes precedence over | |
5381 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5382 | () |
7ab12479 | 5383 | { |
ccd0664b | 5384 | Lisp_Object window; |
7ab12479 JB |
5385 | |
5386 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5387 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5388 | window = Vminibuf_scroll_window; |
5389 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5390 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5391 | { |
5392 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5393 | if (NILP (window)) |
87478b52 | 5394 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5395 | } |
5396 | else | |
dbc4e1c1 JB |
5397 | { |
5398 | /* Nothing specified; look for a neighboring window on the same | |
5399 | frame. */ | |
5400 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5401 | ||
5402 | if (EQ (window, selected_window)) | |
5403 | /* That didn't get us anywhere; look for a window on another | |
5404 | visible frame. */ | |
5405 | do | |
5406 | window = Fnext_window (window, Qnil, Qt); | |
5407 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5408 | && ! EQ (window, selected_window)); | |
5409 | } | |
5410 | ||
b7826503 | 5411 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5412 | |
5413 | if (EQ (window, selected_window)) | |
5414 | error ("There is no other window"); | |
5415 | ||
ccd0664b RS |
5416 | return window; |
5417 | } | |
5418 | ||
5419 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5420 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5421 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5422 | The next window is the one below the current one; or the one at the top | |
5423 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5424 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5425 | When calling from a program, supply as argument a number, nil, or `-'. | |
5426 | ||
fdb82f93 | 5427 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5428 | showing that buffer, popping the buffer up if necessary. |
5429 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5430 | specifies the window to scroll. This takes precedence over | |
5431 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5432 | (arg) |
d4e7cf01 | 5433 | Lisp_Object arg; |
ccd0664b | 5434 | { |
d4e7cf01 GM |
5435 | Lisp_Object window; |
5436 | struct window *w; | |
331379bf | 5437 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5438 | |
5439 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5440 | w = XWINDOW (window); |
7ab12479 JB |
5441 | |
5442 | /* Don't screw up if window_scroll gets an error. */ | |
5443 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5444 | ++windows_or_buffers_changed; |
7ab12479 JB |
5445 | |
5446 | Fset_buffer (w->buffer); | |
5447 | SET_PT (marker_position (w->pointm)); | |
5448 | ||
413430c5 | 5449 | if (NILP (arg)) |
d4e7cf01 | 5450 | window_scroll (window, 1, 1, 1); |
413430c5 | 5451 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5452 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5453 | else |
5454 | { | |
413430c5 EN |
5455 | if (CONSP (arg)) |
5456 | arg = Fcar (arg); | |
b7826503 | 5457 | CHECK_NUMBER (arg); |
101d1605 | 5458 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5459 | } |
5460 | ||
b73ea88e | 5461 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5462 | unbind_to (count, Qnil); |
7ab12479 JB |
5463 | |
5464 | return Qnil; | |
5465 | } | |
5466 | \f | |
e0965597 | 5467 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5468 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5469 | Default for ARG is window width minus 2. |
5470 | Value is the total amount of leftward horizontal scrolling in | |
5471 | effect after the change. | |
23fe745a | 5472 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5473 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5474 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5475 | by this function. This happens in an interactive call. */) |
5476 | (arg, set_minimum) | |
5477 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5478 | { |
c67fa410 GM |
5479 | Lisp_Object result; |
5480 | int hscroll; | |
5481 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5482 | |
265a9e55 | 5483 | if (NILP (arg)) |
949cf20f | 5484 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5485 | else |
5486 | arg = Fprefix_numeric_value (arg); | |
5487 | ||
c67fa410 GM |
5488 | hscroll = XINT (w->hscroll) + XINT (arg); |
5489 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5490 | ||
dc297565 | 5491 | if (!NILP (set_minimum)) |
c67fa410 GM |
5492 | w->min_hscroll = w->hscroll; |
5493 | ||
5494 | return result; | |
7ab12479 JB |
5495 | } |
5496 | ||
e0965597 | 5497 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5498 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5499 | Default for ARG is window width minus 2. |
5500 | Value is the total amount of leftward horizontal scrolling in | |
5501 | effect after the change. | |
23fe745a | 5502 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5503 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5504 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5505 | by this function. This happens in an interactive call. */) |
5506 | (arg, set_minimum) | |
a93563fd | 5507 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5508 | { |
c67fa410 GM |
5509 | Lisp_Object result; |
5510 | int hscroll; | |
5511 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5512 | |
265a9e55 | 5513 | if (NILP (arg)) |
949cf20f | 5514 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5515 | else |
5516 | arg = Fprefix_numeric_value (arg); | |
5517 | ||
c67fa410 GM |
5518 | hscroll = XINT (w->hscroll) - XINT (arg); |
5519 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5520 | |
dc297565 | 5521 | if (!NILP (set_minimum)) |
c67fa410 GM |
5522 | w->min_hscroll = w->hscroll; |
5523 | ||
5524 | return result; | |
7ab12479 JB |
5525 | } |
5526 | ||
fa832261 KS |
5527 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5528 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5529 | Returns nil, if selected window is not a minibuffer window. */) |
fa832261 KS |
5530 | () |
5531 | { | |
5532 | if (minibuf_level > 0 | |
5533 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5534 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5535 | return minibuf_selected_window; | |
5536 | ||
5537 | return Qnil; | |
5538 | } | |
5539 | ||
12c8b416 GM |
5540 | /* Value is the number of lines actually displayed in window W, |
5541 | as opposed to its height. */ | |
5542 | ||
5543 | static int | |
5544 | displayed_window_lines (w) | |
5545 | struct window *w; | |
5546 | { | |
5547 | struct it it; | |
5548 | struct text_pos start; | |
5549 | int height = window_box_height (w); | |
5550 | struct buffer *old_buffer; | |
5551 | int bottom_y; | |
5552 | ||
5553 | if (XBUFFER (w->buffer) != current_buffer) | |
5554 | { | |
5555 | old_buffer = current_buffer; | |
5556 | set_buffer_internal (XBUFFER (w->buffer)); | |
5557 | } | |
5558 | else | |
5559 | old_buffer = NULL; | |
5560 | ||
521b203e GM |
5561 | /* In case W->start is out of the accessible range, do something |
5562 | reasonable. This happens in Info mode when Info-scroll-down | |
5563 | calls (recenter -1) while W->start is 1. */ | |
5564 | if (XMARKER (w->start)->charpos < BEGV) | |
5565 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5566 | else if (XMARKER (w->start)->charpos > ZV) | |
5567 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5568 | else | |
5569 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5570 | ||
12c8b416 GM |
5571 | start_display (&it, w, start); |
5572 | move_it_vertically (&it, height); | |
c8bc6f65 | 5573 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5574 | |
1de65f51 RS |
5575 | /* rms: On a non-window display, |
5576 | the value of it.vpos at the bottom of the screen | |
5577 | seems to be 1 larger than window_box_height (w). | |
5578 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5579 | when ZV is on the last screen line | |
5580 | moves to the previous screen line instead of the last one. */ | |
5581 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5582 | height++; | |
5583 | ||
12c8b416 GM |
5584 | /* Add in empty lines at the bottom of the window. */ |
5585 | if (bottom_y < height) | |
5586 | { | |
949cf20f | 5587 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5588 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5589 | } |
5590 | ||
c8bc6f65 GM |
5591 | if (old_buffer) |
5592 | set_buffer_internal (old_buffer); | |
5593 | ||
12c8b416 GM |
5594 | return it.vpos; |
5595 | } | |
5596 | ||
5597 | ||
7ab12479 | 5598 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
12bb3111 | 5599 | doc: /* Center point in selected window and redisplay frame. |
fdb82f93 | 5600 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5601 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5602 | bottom of the window. (ARG should be less than the height of the window.) |
5603 | ||
7d1d98ee | 5604 | If ARG is omitted or nil, erase the entire frame and then redraw with point |
12bb3111 | 5605 | in the center of the selected window. If `auto-resize-tool-bars' is set to |
7d1d98ee KS |
5606 | `grow-only', this resets the tool-bar's height to the minimum height needed. |
5607 | ||
fdb82f93 PJ |
5608 | Just C-u as prefix means put point in the center of the window |
5609 | and redisplay normally--don't erase and redraw the frame. */) | |
5610 | (arg) | |
413430c5 | 5611 | register Lisp_Object arg; |
7ab12479 | 5612 | { |
6df47b59 | 5613 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5614 | struct buffer *buf = XBUFFER (w->buffer); |
5615 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5616 | int center_p = 0; |
5617 | int charpos, bytepos; | |
f6b43440 RS |
5618 | int iarg; |
5619 | int this_scroll_margin; | |
7ab12479 | 5620 | |
0fa5d25b RS |
5621 | /* If redisplay is suppressed due to an error, try again. */ |
5622 | obuf->display_error_modiff = 0; | |
5623 | ||
413430c5 | 5624 | if (NILP (arg)) |
7ab12479 | 5625 | { |
f02d6d5c KH |
5626 | int i; |
5627 | ||
5628 | /* Invalidate pixel data calculated for all compositions. */ | |
5629 | for (i = 0; i < n_compositions; i++) | |
5630 | composition_table[i]->font = NULL; | |
7ab12479 | 5631 | |
7d1d98ee KS |
5632 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5633 | ||
5634 | Fredraw_frame (WINDOW_FRAME (w)); | |
5635 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6df47b59 | 5636 | center_p = 1; |
7ab12479 | 5637 | } |
413430c5 | 5638 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5639 | center_p = 1; |
7ab12479 JB |
5640 | else |
5641 | { | |
413430c5 | 5642 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5643 | CHECK_NUMBER (arg); |
ae12ecd7 | 5644 | iarg = XINT (arg); |
7ab12479 JB |
5645 | } |
5646 | ||
478292ed | 5647 | set_buffer_internal (buf); |
7ab12479 | 5648 | |
f6b43440 RS |
5649 | /* Do this after making BUF current |
5650 | in case scroll_margin is buffer-local. */ | |
5651 | this_scroll_margin = max (0, scroll_margin); | |
5652 | this_scroll_margin = min (this_scroll_margin, | |
5653 | XFASTINT (w->total_lines) / 4); | |
5654 | ||
521b203e | 5655 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5656 | have variable-height lines and centering point on the basis of |
5657 | line counts would lead to strange effects. */ | |
521b203e | 5658 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5659 | { |
6df47b59 GM |
5660 | if (center_p) |
5661 | { | |
521b203e GM |
5662 | struct it it; |
5663 | struct text_pos pt; | |
177c0ea7 | 5664 | |
521b203e GM |
5665 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5666 | start_display (&it, w, pt); | |
f204989e | 5667 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5668 | charpos = IT_CHARPOS (it); |
5669 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5670 | } |
f6b43440 | 5671 | else if (iarg < 0) |
6df47b59 | 5672 | { |
521b203e GM |
5673 | struct it it; |
5674 | struct text_pos pt; | |
f6b43440 | 5675 | int nlines = -iarg; |
f204989e KS |
5676 | int extra_line_spacing; |
5677 | int h = window_box_height (w); | |
177c0ea7 | 5678 | |
f6b43440 RS |
5679 | iarg = - max (-iarg, this_scroll_margin); |
5680 | ||
521b203e GM |
5681 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5682 | start_display (&it, w, pt); | |
f204989e KS |
5683 | |
5684 | /* Be sure we have the exact height of the full line containing PT. */ | |
5685 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5686 | |
d466fa4d | 5687 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5688 | height minus what's displayed in the line containing PT, |
5689 | and the lines below. */ | |
f204989e KS |
5690 | it.current_y = 0; |
5691 | it.vpos = 0; | |
d466fa4d GM |
5692 | move_it_by_lines (&it, nlines, 1); |
5693 | ||
f204989e KS |
5694 | if (it.vpos == nlines) |
5695 | h -= it.current_y; | |
5696 | else | |
5697 | { | |
5698 | /* Last line has no newline */ | |
5699 | h -= line_bottom_y (&it); | |
5700 | it.vpos++; | |
5701 | } | |
5702 | ||
5703 | /* Don't reserve space for extra line spacing of last line. */ | |
5704 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5705 | |
5706 | /* If we can't move down NLINES lines because we hit | |
5707 | the end of the buffer, count in some empty lines. */ | |
5708 | if (it.vpos < nlines) | |
f204989e KS |
5709 | { |
5710 | nlines -= it.vpos; | |
5711 | extra_line_spacing = it.extra_line_spacing; | |
5712 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5713 | } | |
5714 | if (h <= 0) | |
5715 | return Qnil; | |
201c831a | 5716 | |
f204989e | 5717 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5718 | start_display (&it, w, pt); |
f204989e KS |
5719 | it.current_y = 0; |
5720 | move_it_vertically_backward (&it, h); | |
5721 | ||
5722 | /* If extra line spacing is present, we may move too far | |
5723 | back. This causes the last line to be only partially | |
5724 | visible (which triggers redisplay to recenter that line | |
5725 | in the middle), so move forward. | |
5726 | But ignore extra line spacing on last line, as it is not | |
5727 | considered to be part of the visible height of the line. | |
5728 | */ | |
5729 | h += extra_line_spacing; | |
5730 | while (-it.current_y > h) | |
5731 | move_it_by_lines (&it, 1, 1); | |
5732 | ||
521b203e GM |
5733 | charpos = IT_CHARPOS (it); |
5734 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5735 | } |
521b203e GM |
5736 | else |
5737 | { | |
5738 | struct position pos; | |
f6b43440 | 5739 | |
f6b43440 RS |
5740 | iarg = max (iarg, this_scroll_margin); |
5741 | ||
5742 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5743 | charpos = pos.bufpos; |
5744 | bytepos = pos.bytepos; | |
5745 | } | |
5746 | } | |
5747 | else | |
5748 | { | |
5749 | struct position pos; | |
5750 | int ht = window_internal_height (w); | |
5751 | ||
5752 | if (center_p) | |
a4429c5b | 5753 | iarg = ht / 2; |
f567c488 KS |
5754 | else if (iarg < 0) |
5755 | iarg += ht; | |
f6b43440 RS |
5756 | |
5757 | /* Don't let it get into the margin at either top or bottom. */ | |
5758 | iarg = max (iarg, this_scroll_margin); | |
5759 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5760 | |
f6b43440 | 5761 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5762 | charpos = pos.bufpos; |
5763 | bytepos = pos.bytepos; | |
5764 | } | |
5765 | ||
5766 | /* Set the new window start. */ | |
5767 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5768 | w->window_end_valid = Qnil; |
177c0ea7 | 5769 | |
95605b1b RS |
5770 | w->optional_new_start = Qt; |
5771 | ||
6df47b59 GM |
5772 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5773 | w->start_at_line_beg = Qt; | |
5774 | else | |
5775 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5776 | |
478292ed | 5777 | set_buffer_internal (obuf); |
7ab12479 JB |
5778 | return Qnil; |
5779 | } | |
b7617575 GM |
5780 | |
5781 | ||
81fe0836 | 5782 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5783 | 0, 1, 0, |
5784 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5785 | WINDOW defaults to the selected window. |
8fef9de1 MR |
5786 | |
5787 | The return value does neither include the mode line or header line, if | |
5788 | any, nor any partial-height lines in the text display area. */) | |
fdb82f93 | 5789 | (window) |
81fe0836 MB |
5790 | Lisp_Object window; |
5791 | { | |
5792 | struct window *w = decode_window (window); | |
5793 | int pixel_height = window_box_height (w); | |
949cf20f | 5794 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5795 | return make_number (line_height); |
5796 | } | |
5797 | ||
5798 | ||
7ab12479 JB |
5799 | \f |
5800 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5801 | 1, 1, "P", |
5802 | doc: /* Position point relative to window. | |
5803 | With no argument, position point at center of window. | |
5804 | An argument specifies vertical position within the window; | |
5805 | zero means top of window, negative means relative to bottom of window. */) | |
5806 | (arg) | |
b7617575 | 5807 | Lisp_Object arg; |
7ab12479 | 5808 | { |
b7617575 GM |
5809 | struct window *w = XWINDOW (selected_window); |
5810 | int lines, start; | |
540b6aa0 | 5811 | Lisp_Object window; |
f6b43440 RS |
5812 | #if 0 |
5813 | int this_scroll_margin; | |
5814 | #endif | |
7ab12479 | 5815 | |
b7617575 | 5816 | window = selected_window; |
7ab12479 JB |
5817 | start = marker_position (w->start); |
5818 | if (start < BEGV || start > ZV) | |
5819 | { | |
b7617575 | 5820 | int height = window_internal_height (w); |
cd2be1dd | 5821 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5822 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5823 | w->start_at_line_beg = Fbolp (); |
5824 | w->force_start = Qt; | |
5825 | } | |
5826 | else | |
b73ea88e | 5827 | Fgoto_char (w->start); |
7ab12479 | 5828 | |
b7617575 | 5829 | lines = displayed_window_lines (w); |
f6b43440 RS |
5830 | |
5831 | #if 0 | |
5832 | this_scroll_margin = max (0, scroll_margin); | |
5833 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5834 | #endif | |
5835 | ||
b7617575 GM |
5836 | if (NILP (arg)) |
5837 | XSETFASTINT (arg, lines / 2); | |
5838 | else | |
5839 | { | |
f6b43440 RS |
5840 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5841 | ||
5842 | if (iarg < 0) | |
5843 | iarg = iarg + lines; | |
5844 | ||
5845 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5846 | to a place inside the scroll margins (which would cause the | |
5847 | next redisplay to scroll). I wrote this code, but then concluded | |
5848 | it is probably better not to install it. However, it is here | |
5849 | inside #if 0 so as not to lose it. -- rms. */ | |
5850 | ||
5851 | /* Don't let it get into the margin at either top or bottom. */ | |
5852 | iarg = max (iarg, this_scroll_margin); | |
5853 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5854 | #endif | |
5855 | ||
5856 | arg = make_number (iarg); | |
b7617575 GM |
5857 | } |
5858 | ||
c8bc6f65 | 5859 | /* Skip past a partially visible first line. */ |
163784df | 5860 | if (w->vscroll) |
163784df MB |
5861 | XSETINT (arg, XINT (arg) + 1); |
5862 | ||
540b6aa0 | 5863 | return Fvertical_motion (arg, window); |
7ab12479 | 5864 | } |
5500c422 GM |
5865 | |
5866 | ||
7ab12479 | 5867 | \f |
5500c422 GM |
5868 | /*********************************************************************** |
5869 | Window Configuration | |
5870 | ***********************************************************************/ | |
5871 | ||
7ab12479 JB |
5872 | struct save_window_data |
5873 | { | |
d0fdb6da | 5874 | EMACS_UINT size; |
7ab12479 | 5875 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 5876 | Lisp_Object selected_frame; |
7ab12479 JB |
5877 | Lisp_Object current_window; |
5878 | Lisp_Object current_buffer; | |
5879 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5880 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5881 | Lisp_Object root_window; |
bdc727bf | 5882 | Lisp_Object focus_frame; |
cbff28e8 RS |
5883 | /* A vector, each of whose elements is a struct saved_window |
5884 | for one window. */ | |
7ab12479 | 5885 | Lisp_Object saved_windows; |
b05b4e27 SM |
5886 | |
5887 | /* All fields above are traced by the GC. | |
5888 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5889 | ||
5890 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5891 | int frame_tool_bar_lines; | |
7ab12479 | 5892 | }; |
ff06df24 | 5893 | |
cbff28e8 | 5894 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5895 | struct saved_window |
ea68264b GM |
5896 | { |
5897 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 5898 | EMACS_UINT size; |
ea68264b | 5899 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 5900 | |
ea68264b GM |
5901 | Lisp_Object window; |
5902 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5903 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5904 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5905 | Lisp_Object parent, prev; |
5906 | Lisp_Object start_at_line_beg; | |
5907 | Lisp_Object display_table; | |
949cf20f KS |
5908 | Lisp_Object orig_top_line, orig_total_lines; |
5909 | Lisp_Object left_margin_cols, right_margin_cols; | |
5910 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5911 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 5912 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
5913 | }; |
5914 | ||
7ab12479 JB |
5915 | #define SAVED_WINDOW_N(swv,n) \ |
5916 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5917 | ||
5918 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5919 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5920 | (object) | |
413430c5 | 5921 | Lisp_Object object; |
7ab12479 | 5922 | { |
6ad0381c | 5923 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5924 | } |
5925 | ||
3f8ab7bd | 5926 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5927 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5928 | (config) | |
3f8ab7bd RS |
5929 | Lisp_Object config; |
5930 | { | |
5931 | register struct save_window_data *data; | |
5932 | struct Lisp_Vector *saved_windows; | |
5933 | ||
663fbbba | 5934 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5935 | |
5936 | data = (struct save_window_data *) XVECTOR (config); | |
5937 | saved_windows = XVECTOR (data->saved_windows); | |
5938 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5939 | } | |
5940 | ||
d5b2799e | 5941 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5942 | Sset_window_configuration, 1, 1, 0, |
5943 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5944 | CONFIGURATION must be a value previously returned | |
5945 | by `current-window-configuration' (which see). | |
5946 | If CONFIGURATION was made from a frame that is now deleted, | |
5947 | only frame-independent values can be restored. In this case, | |
5948 | the return value is nil. Otherwise the value is t. */) | |
5949 | (configuration) | |
2f83aebe | 5950 | Lisp_Object configuration; |
7ab12479 | 5951 | { |
7ab12479 JB |
5952 | register struct save_window_data *data; |
5953 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5954 | Lisp_Object new_current_buffer; |
fd482be5 | 5955 | Lisp_Object frame; |
44fa5b1e | 5956 | FRAME_PTR f; |
72695e47 | 5957 | int old_point = -1; |
7ab12479 | 5958 | |
663fbbba | 5959 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5960 | |
2f83aebe | 5961 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5962 | saved_windows = XVECTOR (data->saved_windows); |
5963 | ||
7ab12479 | 5964 | new_current_buffer = data->current_buffer; |
265a9e55 | 5965 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5966 | new_current_buffer = Qnil; |
72695e47 | 5967 | else |
73cadfc1 DK |
5968 | { |
5969 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5970 | /* The code further down "preserves point" by saving here PT in |
5971 | old_point and then setting it later back into PT. When the | |
5972 | current-selected-window and the final-selected-window both show | |
5973 | the current buffer, this suffers from the problem that the | |
5974 | current PT is the window-point of the current-selected-window, | |
5975 | while the final PT is the point of the final-selected-window, so | |
5976 | this copy from one PT to the other would end up moving the | |
5977 | window-point of the final-selected-window to the window-point of | |
5978 | the current-selected-window. So we have to be careful which | |
5979 | point of the current-buffer we copy into old_point. */ | |
5980 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5981 | && WINDOWP (selected_window) | |
5982 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5983 | && !EQ (selected_window, data->current_window)) | |
5984 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5985 | else | |
5986 | old_point = PT; | |
73cadfc1 | 5987 | else |
203eb0aa SM |
5988 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5989 | point in new_current_buffer as of the last time this buffer was | |
5990 | used. This can be non-deterministic since it can be changed by | |
5991 | things like jit-lock by mere temporary selection of some random | |
5992 | window that happens to show this buffer. | |
5993 | So if possible we want this arbitrary choice of "which point" to | |
5994 | be the one from the to-be-selected-window so as to prevent this | |
5995 | window's cursor from being copied from another window. */ | |
5996 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5997 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5998 | && !EQ (selected_window, data->current_window)) | |
5999 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6000 | else | |
6001 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6002 | } |
7ab12479 | 6003 | |
fd482be5 JB |
6004 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6005 | f = XFRAME (frame); | |
177c0ea7 | 6006 | |
fd482be5 JB |
6007 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6008 | However, there is other stuff we should still try to do below. */ | |
6009 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6010 | { |
fd482be5 JB |
6011 | register struct window *w; |
6012 | register struct saved_window *p; | |
5500c422 GM |
6013 | struct window *root_window; |
6014 | struct window **leaf_windows; | |
6015 | int n_leaf_windows; | |
c4280705 | 6016 | int k, i, n; |
fd482be5 JB |
6017 | |
6018 | /* If the frame has been resized since this window configuration was | |
6019 | made, we change the frame to the size specified in the | |
6020 | configuration, restore the configuration, and then resize it | |
6021 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6022 | int previous_frame_lines = FRAME_LINES (f); |
6023 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6024 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6025 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6026 | |
d2b35234 RS |
6027 | /* The mouse highlighting code could get screwed up |
6028 | if it runs during this. */ | |
6029 | BLOCK_INPUT; | |
6030 | ||
b05b4e27 SM |
6031 | if (data->frame_lines != previous_frame_lines |
6032 | || data->frame_cols != previous_frame_cols) | |
6033 | change_frame_size (f, data->frame_lines, | |
6034 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 6035 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 6036 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 6037 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
6038 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6039 | make_number (0)); | |
4314246f | 6040 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6041 | if (data->frame_tool_bar_lines |
9ea173e8 | 6042 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6043 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6044 | make_number (0)); | |
4314246f | 6045 | #endif |
217f2871 | 6046 | #endif |
fd482be5 | 6047 | |
a46c0153 RS |
6048 | /* "Swap out" point from the selected window's buffer |
6049 | into the window itself. (Normally the pointm of the selected | |
6050 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6051 | restoring the window contents, and prevent it from |
6052 | being done later on when we select a new window. */ | |
596ae0cf RS |
6053 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6054 | { | |
6055 | w = XWINDOW (selected_window); | |
6056 | set_marker_both (w->pointm, | |
6057 | w->buffer, | |
6058 | BUF_PT (XBUFFER (w->buffer)), | |
6059 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6060 | } | |
6061 | ||
fd482be5 | 6062 | windows_or_buffers_changed++; |
29aeee73 | 6063 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6064 | |
5500c422 | 6065 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6066 | is a serious redisplay flickering problem. What we would |
5500c422 | 6067 | really like to do is to free only those matrices not reused |
9d14503e | 6068 | below. */ |
5500c422 GM |
6069 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
6070 | leaf_windows | |
6071 | = (struct window **) alloca (count_windows (root_window) | |
6072 | * sizeof (struct window *)); | |
6073 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6074 | ||
fd482be5 JB |
6075 | /* Kludge Alert! |
6076 | Mark all windows now on frame as "deleted". | |
6077 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6078 | |
fd482be5 JB |
6079 | Save their current buffers in their height fields, since we may |
6080 | need it later, if a buffer saved in the configuration is now | |
6081 | dead. */ | |
6082 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6083 | ||
6084 | for (k = 0; k < saved_windows->size; k++) | |
6085 | { | |
6086 | p = SAVED_WINDOW_N (saved_windows, k); | |
6087 | w = XWINDOW (p->window); | |
6088 | w->next = Qnil; | |
7ab12479 | 6089 | |
fd482be5 JB |
6090 | if (!NILP (p->parent)) |
6091 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6092 | XFASTINT (p->parent))->window; | |
6093 | else | |
6094 | w->parent = Qnil; | |
7ab12479 | 6095 | |
fd482be5 | 6096 | if (!NILP (p->prev)) |
7ab12479 | 6097 | { |
fd482be5 JB |
6098 | w->prev = SAVED_WINDOW_N (saved_windows, |
6099 | XFASTINT (p->prev))->window; | |
6100 | XWINDOW (w->prev)->next = p->window; | |
6101 | } | |
6102 | else | |
6103 | { | |
6104 | w->prev = Qnil; | |
6105 | if (!NILP (w->parent)) | |
6106 | { | |
949cf20f | 6107 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6108 | { |
6109 | XWINDOW (w->parent)->vchild = p->window; | |
6110 | XWINDOW (w->parent)->hchild = Qnil; | |
6111 | } | |
6112 | else | |
6113 | { | |
6114 | XWINDOW (w->parent)->hchild = p->window; | |
6115 | XWINDOW (w->parent)->vchild = Qnil; | |
6116 | } | |
6117 | } | |
6118 | } | |
6119 | ||
6120 | /* If we squirreled away the buffer in the window's height, | |
6121 | restore it now. */ | |
949cf20f KS |
6122 | if (BUFFERP (w->total_lines)) |
6123 | w->buffer = w->total_lines; | |
6124 | w->left_col = p->left_col; | |
6125 | w->top_line = p->top_line; | |
6126 | w->total_cols = p->total_cols; | |
6127 | w->total_lines = p->total_lines; | |
fd482be5 | 6128 | w->hscroll = p->hscroll; |
ea68264b | 6129 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6130 | w->display_table = p->display_table; |
949cf20f KS |
6131 | w->orig_top_line = p->orig_top_line; |
6132 | w->orig_total_lines = p->orig_total_lines; | |
6133 | w->left_margin_cols = p->left_margin_cols; | |
6134 | w->right_margin_cols = p->right_margin_cols; | |
6135 | w->left_fringe_width = p->left_fringe_width; | |
6136 | w->right_fringe_width = p->right_fringe_width; | |
6137 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6138 | w->scroll_bar_width = p->scroll_bar_width; | |
6139 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6140 | w->dedicated = p->dedicated; |
047aaeb9 | 6141 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6142 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6143 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6144 | |
6145 | /* Reinstall the saved buffer and pointers into it. */ | |
6146 | if (NILP (p->buffer)) | |
6147 | w->buffer = p->buffer; | |
6148 | else | |
6149 | { | |
6150 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6151 | /* If saved buffer is alive, install it. */ | |
6152 | { | |
6153 | w->buffer = p->buffer; | |
6154 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6155 | set_marker_restricted (w->start, p->start, w->buffer); |
6156 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6157 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6158 | p->mark, w->buffer); |
fd482be5 JB |
6159 | |
6160 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6161 | restore the location of point in the buffer which was |
6162 | current when the window configuration was recorded. */ | |
6b54027b RS |
6163 | if (!EQ (p->buffer, new_current_buffer) |
6164 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6165 | Fgoto_char (w->pointm); |
6166 | } | |
52a68e98 RS |
6167 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6168 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6169 | { |
fd482be5 JB |
6170 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6171 | /* This will set the markers to beginning of visible | |
6172 | range. */ | |
6173 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6174 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6175 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6176 | } |
6177 | else | |
fd482be5 | 6178 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6179 | are real. */ |
7ab12479 | 6180 | { |
fd482be5 JB |
6181 | /* Set window markers at start of visible range. */ |
6182 | if (XMARKER (w->start)->buffer == 0) | |
6183 | set_marker_restricted (w->start, make_number (0), | |
6184 | w->buffer); | |
6185 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6186 | set_marker_restricted_both (w->pointm, w->buffer, |
6187 | BUF_PT (XBUFFER (w->buffer)), | |
6188 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6189 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6190 | } |
6191 | } | |
6192 | } | |
9ace597f | 6193 | |
fd482be5 | 6194 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6195 | /* Prevent "swapping out point" in the old selected window |
6196 | using the buffer that has been restored into it. | |
a46c0153 | 6197 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6198 | selected_window = Qnil; |
a46c0153 RS |
6199 | |
6200 | /* Arrange *not* to restore point in the buffer that was | |
6201 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6202 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6203 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6204 | make_number (old_point), |
243a5ce6 | 6205 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6206 | |
14d87dc9 | 6207 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6208 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6209 | = selected_window; | |
7ab12479 | 6210 | |
db269683 | 6211 | if (NILP (data->focus_frame) |
017b2bad | 6212 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6213 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6214 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6215 | |
fd482be5 JB |
6216 | #if 0 /* I don't understand why this is needed, and it causes problems |
6217 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6218 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6219 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
c6932ecd | 6220 | 0, 0, Qnil); |
fd482be5 JB |
6221 | #endif |
6222 | ||
6223 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6224 | if (previous_frame_lines != FRAME_LINES (f) |
6225 | || previous_frame_cols != FRAME_COLS (f)) | |
6226 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6227 | 0, 0, 0); |
e3678b64 | 6228 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6229 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6230 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6231 | make_number (0)); | |
4314246f | 6232 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6233 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6234 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6235 | make_number (0)); | |
4314246f | 6236 | #endif |
217f2871 | 6237 | #endif |
d2b35234 | 6238 | |
5500c422 | 6239 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6240 | for (i = n = 0; i < n_leaf_windows; ++i) |
6241 | { | |
6242 | if (NILP (leaf_windows[i]->buffer)) | |
6243 | { | |
6244 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6245 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6246 | && NILP (leaf_windows[i]->vchild)); |
6247 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6248 | } |
6249 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6250 | ++n; | |
6251 | } | |
177c0ea7 | 6252 | |
5500c422 GM |
6253 | adjust_glyphs (f); |
6254 | ||
d2b35234 | 6255 | UNBLOCK_INPUT; |
756b6edc | 6256 | |
478292ed RS |
6257 | /* Fselect_window will have made f the selected frame, so we |
6258 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6259 | selected window too, but that doesn't make the call to | |
6260 | Fselect_window above totally superfluous; it still sets f's | |
6261 | selected window. */ | |
6262 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6263 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6264 | |
eeca6f6f | 6265 | run_window_configuration_change_hook (f); |
478292ed | 6266 | } |
bdc727bf JB |
6267 | |
6268 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6269 | Fset_buffer (new_current_buffer); |
bdc727bf | 6270 | |
478292ed | 6271 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6272 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6273 | |
3f8ab7bd | 6274 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6275 | } |
6276 | ||
44fa5b1e | 6277 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6278 | by setting their buffers to nil. */ |
6279 | ||
fd482be5 | 6280 | void |
7ab12479 JB |
6281 | delete_all_subwindows (w) |
6282 | register struct window *w; | |
6283 | { | |
265a9e55 | 6284 | if (!NILP (w->next)) |
7ab12479 | 6285 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6286 | if (!NILP (w->vchild)) |
7ab12479 | 6287 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6288 | if (!NILP (w->hchild)) |
7ab12479 | 6289 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6290 | |
949cf20f | 6291 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6292 | |
86e48436 RS |
6293 | if (!NILP (w->buffer)) |
6294 | unshow_buffer (w); | |
6295 | ||
605be8af JB |
6296 | /* We set all three of these fields to nil, to make sure that we can |
6297 | distinguish this dead window from any live window. Live leaf | |
6298 | windows will have buffer set, and combination windows will have | |
6299 | vchild or hchild set. */ | |
6300 | w->buffer = Qnil; | |
6301 | w->vchild = Qnil; | |
6302 | w->hchild = Qnil; | |
acf70840 GM |
6303 | |
6304 | Vwindow_list = Qnil; | |
7ab12479 JB |
6305 | } |
6306 | \f | |
6307 | static int | |
6308 | count_windows (window) | |
6309 | register struct window *window; | |
6310 | { | |
6311 | register int count = 1; | |
265a9e55 | 6312 | if (!NILP (window->next)) |
7ab12479 | 6313 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6314 | if (!NILP (window->vchild)) |
7ab12479 | 6315 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6316 | if (!NILP (window->hchild)) |
7ab12479 JB |
6317 | count += count_windows (XWINDOW (window->hchild)); |
6318 | return count; | |
6319 | } | |
6320 | ||
5500c422 | 6321 | |
177c0ea7 | 6322 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6323 | Value is last index + 1. */ |
6324 | ||
6325 | static int | |
6326 | get_leaf_windows (w, flat, i) | |
6327 | struct window *w; | |
6328 | struct window **flat; | |
6329 | int i; | |
6330 | { | |
6331 | while (w) | |
6332 | { | |
6333 | if (!NILP (w->hchild)) | |
6334 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6335 | else if (!NILP (w->vchild)) | |
6336 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6337 | else |
5500c422 GM |
6338 | flat[i++] = w; |
6339 | ||
6340 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6341 | } | |
6342 | ||
6343 | return i; | |
6344 | } | |
6345 | ||
6346 | ||
6347 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6348 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6349 | can be returned. */ | |
6350 | ||
6351 | struct glyph * | |
6352 | get_phys_cursor_glyph (w) | |
6353 | struct window *w; | |
6354 | { | |
6355 | struct glyph_row *row; | |
6356 | struct glyph *glyph; | |
6357 | ||
6358 | if (w->phys_cursor.vpos >= 0 | |
6359 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6360 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6361 | row->enabled_p) | |
6362 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6363 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6364 | else | |
6365 | glyph = NULL; | |
6366 | ||
6367 | return glyph; | |
6368 | } | |
6369 | ||
6370 | ||
7ab12479 JB |
6371 | static int |
6372 | save_window_save (window, vector, i) | |
6373 | Lisp_Object window; | |
6374 | struct Lisp_Vector *vector; | |
6375 | int i; | |
6376 | { | |
6377 | register struct saved_window *p; | |
6378 | register struct window *w; | |
6379 | register Lisp_Object tem; | |
6380 | ||
265a9e55 | 6381 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6382 | { |
6383 | p = SAVED_WINDOW_N (vector, i); | |
6384 | w = XWINDOW (window); | |
6385 | ||
2a1893f4 | 6386 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6387 | p->window = window; |
6388 | p->buffer = w->buffer; | |
949cf20f KS |
6389 | p->left_col = w->left_col; |
6390 | p->top_line = w->top_line; | |
6391 | p->total_cols = w->total_cols; | |
6392 | p->total_lines = w->total_lines; | |
7ab12479 | 6393 | p->hscroll = w->hscroll; |
ea68264b | 6394 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6395 | p->display_table = w->display_table; |
949cf20f KS |
6396 | p->orig_top_line = w->orig_top_line; |
6397 | p->orig_total_lines = w->orig_total_lines; | |
6398 | p->left_margin_cols = w->left_margin_cols; | |
6399 | p->right_margin_cols = w->right_margin_cols; | |
6400 | p->left_fringe_width = w->left_fringe_width; | |
6401 | p->right_fringe_width = w->right_fringe_width; | |
6402 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6403 | p->scroll_bar_width = w->scroll_bar_width; | |
6404 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6405 | p->dedicated = w->dedicated; |
047aaeb9 | 6406 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6407 | if (!NILP (w->buffer)) |
7ab12479 JB |
6408 | { |
6409 | /* Save w's value of point in the window configuration. | |
6410 | If w is the selected window, then get the value of point | |
6411 | from the buffer; pointm is garbage in the selected window. */ | |
6412 | if (EQ (window, selected_window)) | |
6413 | { | |
6414 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6415 | set_marker_both (p->pointm, w->buffer, |
6416 | BUF_PT (XBUFFER (w->buffer)), | |
6417 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6418 | } |
6419 | else | |
eeb82665 | 6420 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6421 | |
eeb82665 | 6422 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6423 | p->start_at_line_beg = w->start_at_line_beg; |
6424 | ||
6425 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6426 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6427 | } |
6428 | else | |
6429 | { | |
6430 | p->pointm = Qnil; | |
6431 | p->start = Qnil; | |
6432 | p->mark = Qnil; | |
6433 | p->start_at_line_beg = Qnil; | |
6434 | } | |
6435 | ||
265a9e55 | 6436 | if (NILP (w->parent)) |
7ab12479 JB |
6437 | p->parent = Qnil; |
6438 | else | |
6439 | p->parent = XWINDOW (w->parent)->temslot; | |
6440 | ||
265a9e55 | 6441 | if (NILP (w->prev)) |
7ab12479 JB |
6442 | p->prev = Qnil; |
6443 | else | |
6444 | p->prev = XWINDOW (w->prev)->temslot; | |
6445 | ||
265a9e55 | 6446 | if (!NILP (w->vchild)) |
7ab12479 | 6447 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6448 | if (!NILP (w->hchild)) |
7ab12479 JB |
6449 | i = save_window_save (w->hchild, vector, i); |
6450 | } | |
6451 | ||
6452 | return i; | |
6453 | } | |
6454 | ||
a0d76c27 | 6455 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6456 | Scurrent_window_configuration, 0, 1, 0, |
6457 | doc: /* Return an object representing the current window configuration of FRAME. | |
6458 | If FRAME is nil or omitted, use the selected frame. | |
6459 | This describes the number of windows, their sizes and current buffers, | |
6460 | and for each displayed buffer, where display starts, and the positions of | |
6461 | point and mark. An exception is made for point in the current buffer: | |
6462 | its value is -not- saved. | |
6463 | This also records the currently selected frame, and FRAME's focus | |
6464 | redirection (see `redirect-frame-focus'). */) | |
6465 | (frame) | |
44fa5b1e | 6466 | Lisp_Object frame; |
7ab12479 JB |
6467 | { |
6468 | register Lisp_Object tem; | |
6469 | register int n_windows; | |
6470 | register struct save_window_data *data; | |
6471 | register int i; | |
44fa5b1e | 6472 | FRAME_PTR f; |
43bad991 | 6473 | |
44fa5b1e | 6474 | if (NILP (frame)) |
1ae1a37d | 6475 | frame = selected_frame; |
b7826503 | 6476 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6477 | f = XFRAME (frame); |
7ab12479 | 6478 | |
44fa5b1e | 6479 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6480 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6481 | PVEC_WINDOW_CONFIGURATION); | |
6482 | ||
6483 | data->frame_cols = FRAME_COLS (f); | |
6484 | data->frame_lines = FRAME_LINES (f); | |
6485 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6486 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6487 | data->selected_frame = selected_frame; |
44fa5b1e | 6488 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6489 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6490 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6491 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6492 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6493 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6494 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6495 | data->saved_windows = tem; | |
6496 | for (i = 0; i < n_windows; i++) | |
6497 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6498 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6499 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6500 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6501 | return (tem); |
6502 | } | |
6503 | ||
6504 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6505 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6506 | doc: /* Execute BODY, preserving window sizes and contents. |
6507 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6508 | Restore which buffer appears in which window, where display starts, |
6509 | and the value of point and mark for each window. | |
6510 | Also restore the choice of selected window. | |
6511 | Also restore which buffer is current. | |
6924dda6 | 6512 | Does not restore the value of point in current buffer. |
7254a30c | 6513 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6514 | (args) |
7ab12479 JB |
6515 | Lisp_Object args; |
6516 | { | |
6517 | register Lisp_Object val; | |
aed13378 | 6518 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6519 | |
6520 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6521 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6522 | val = Fprogn (args); |
6523 | return unbind_to (count, val); | |
6524 | } | |
5500c422 | 6525 | |
94e16dd5 KS |
6526 | |
6527 | \f | |
6528 | /*********************************************************************** | |
6529 | Window Split Tree | |
6530 | ***********************************************************************/ | |
6531 | ||
6532 | static Lisp_Object | |
c16e1cc3 | 6533 | window_tree (w) |
94e16dd5 KS |
6534 | struct window *w; |
6535 | { | |
6536 | Lisp_Object tail = Qnil; | |
6537 | Lisp_Object result = Qnil; | |
6538 | ||
6539 | while (w) | |
6540 | { | |
6541 | Lisp_Object wn; | |
6542 | ||
6543 | XSETWINDOW (wn, w); | |
6544 | if (!NILP (w->hchild)) | |
6545 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6546 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6547 | else if (!NILP (w->vchild)) |
6548 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6549 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6550 | |
6551 | if (NILP (result)) | |
6552 | { | |
6553 | result = tail = Fcons (wn, Qnil); | |
6554 | } | |
6555 | else | |
6556 | { | |
6557 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6558 | tail = XCDR (tail); | |
6559 | } | |
6560 | ||
6561 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6562 | } | |
6563 | ||
6564 | return result; | |
6565 | } | |
6566 | ||
6567 | ||
6568 | ||
c16e1cc3 | 6569 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6570 | 0, 1, 0, |
c16e1cc3 | 6571 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6572 | |
6573 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6574 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6575 | is the frame's minibuffer window. |
6576 | ||
6577 | If the root window is not split, ROOT is the root window itself. | |
6578 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6579 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6580 | size and position of the subwindows in the split, and the rest of the |
6581 | elements are the subwindows in the split. Each of the subwindows may | |
6582 | again be a window or a list representing a window split, and so on. | |
6583 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6584 | ||
6585 | If FRAME is nil or omitted, return information on the currently | |
6586 | selected frame. */) | |
6587 | (frame) | |
6588 | Lisp_Object frame; | |
6589 | { | |
94e16dd5 KS |
6590 | FRAME_PTR f; |
6591 | ||
6592 | if (NILP (frame)) | |
6593 | frame = selected_frame; | |
6594 | ||
6595 | CHECK_FRAME (frame); | |
6596 | f = XFRAME (frame); | |
6597 | ||
6598 | if (!FRAME_LIVE_P (f)) | |
6599 | return Qnil; | |
6600 | ||
c16e1cc3 | 6601 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6602 | } |
6603 | ||
5500c422 GM |
6604 | \f |
6605 | /*********************************************************************** | |
6606 | Marginal Areas | |
6607 | ***********************************************************************/ | |
6608 | ||
6609 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6610 | 2, 3, 0, |
fdb82f93 | 6611 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6612 | If WINDOW is nil, set margins of the currently selected window. |
6613 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6614 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6615 | does the same for the right marginal area. A nil width parameter | |
6616 | means no margin. */) | |
c10ce82e JB |
6617 | (window, left_width, right_width) |
6618 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6619 | { |
6620 | struct window *w = decode_window (window); | |
5500c422 | 6621 | |
6b61353c KH |
6622 | /* Translate negative or zero widths to nil. |
6623 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6624 | |
c10ce82e | 6625 | if (!NILP (left_width)) |
6b61353c | 6626 | { |
c10ce82e JB |
6627 | CHECK_NUMBER (left_width); |
6628 | if (XINT (left_width) <= 0) | |
6629 | left_width = Qnil; | |
6b61353c | 6630 | } |
5500c422 | 6631 | |
c10ce82e | 6632 | if (!NILP (right_width)) |
6b61353c | 6633 | { |
c10ce82e JB |
6634 | CHECK_NUMBER (right_width); |
6635 | if (XINT (right_width) <= 0) | |
6636 | right_width = Qnil; | |
6b61353c | 6637 | } |
5500c422 | 6638 | |
c10ce82e JB |
6639 | if (!EQ (w->left_margin_cols, left_width) |
6640 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6641 | { |
c10ce82e JB |
6642 | w->left_margin_cols = left_width; |
6643 | w->right_margin_cols = right_width; | |
949cf20f KS |
6644 | |
6645 | adjust_window_margins (w); | |
6646 | ||
6647 | ++windows_or_buffers_changed; | |
6648 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6649 | } | |
5500c422 | 6650 | |
5500c422 GM |
6651 | return Qnil; |
6652 | } | |
6653 | ||
6654 | ||
6655 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6656 | 0, 1, 0, | |
fdb82f93 PJ |
6657 | doc: /* Get width of marginal areas of window WINDOW. |
6658 | If WINDOW is omitted or nil, use the currently selected window. | |
6659 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6660 | If a marginal area does not exist, its width will be returned | |
6661 | as nil. */) | |
6662 | (window) | |
5500c422 GM |
6663 | Lisp_Object window; |
6664 | { | |
6665 | struct window *w = decode_window (window); | |
949cf20f KS |
6666 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6667 | } | |
6668 | ||
6669 | ||
6670 | \f | |
6671 | /*********************************************************************** | |
6672 | Fringes | |
6673 | ***********************************************************************/ | |
6674 | ||
6675 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6676 | 2, 4, 0, | |
6b61353c KH |
6677 | doc: /* Set the fringe widths of window WINDOW. |
6678 | If WINDOW is nil, set the fringe widths of the currently selected | |
6679 | window. | |
6680 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6681 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6682 | fringe width. If a fringe width arg is nil, that means to use the | |
6683 | frame's default fringe width. Default fringe widths can be set with | |
6684 | the command `set-fringe-style'. | |
6685 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6686 | outside of the display margins. By default, fringes are drawn between | |
6687 | display marginal areas and the text area. */) | |
c10ce82e JB |
6688 | (window, left_width, right_width, outside_margins) |
6689 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6690 | { |
6691 | struct window *w = decode_window (window); | |
6692 | ||
c10ce82e JB |
6693 | if (!NILP (left_width)) |
6694 | CHECK_NATNUM (left_width); | |
6695 | if (!NILP (right_width)) | |
6696 | CHECK_NATNUM (right_width); | |
5a857365 | 6697 | |
017e297e | 6698 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6699 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6700 | && (!EQ (w->left_fringe_width, left_width) | |
6701 | || !EQ (w->right_fringe_width, right_width) | |
6702 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6703 | { |
c10ce82e JB |
6704 | w->left_fringe_width = left_width; |
6705 | w->right_fringe_width = right_width; | |
949cf20f KS |
6706 | w->fringes_outside_margins = outside_margins; |
6707 | ||
6708 | adjust_window_margins (w); | |
6709 | ||
6710 | clear_glyph_matrix (w->current_matrix); | |
6711 | w->window_end_valid = Qnil; | |
6712 | ||
6713 | ++windows_or_buffers_changed; | |
6714 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6715 | } | |
6716 | ||
6717 | return Qnil; | |
6718 | } | |
6719 | ||
6720 | ||
6721 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6722 | 0, 1, 0, | |
6723 | doc: /* Get width of fringes of window WINDOW. | |
6724 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6725 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6726 | (window) |
6727 | Lisp_Object window; | |
6728 | { | |
6729 | struct window *w = decode_window (window); | |
d46c6df5 | 6730 | |
949cf20f KS |
6731 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6732 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6733 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6734 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6735 | } |
6736 | ||
6737 | ||
6738 | \f | |
6739 | /*********************************************************************** | |
6740 | Scroll bars | |
6741 | ***********************************************************************/ | |
6742 | ||
6743 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6744 | 2, 4, 0, | |
6745 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6746 | If window is nil, set scroll bars of the currently selected window. | |
6747 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6748 | this is automatically adjusted to a multiple of the frame column width. | |
6749 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6750 | bar: left, right, or nil. | |
6b61353c | 6751 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6752 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6753 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6754 | (window, width, vertical_type, horizontal_type) |
6755 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6756 | { |
6757 | struct window *w = decode_window (window); | |
6758 | ||
6759 | if (!NILP (width)) | |
0f8fe9a2 SM |
6760 | { |
6761 | CHECK_NATNUM (width); | |
949cf20f | 6762 | |
0f8fe9a2 SM |
6763 | if (XINT (width) == 0) |
6764 | vertical_type = Qnil; | |
6765 | } | |
949cf20f | 6766 | |
413a79ad | 6767 | if (!(NILP (vertical_type) |
0cc1039f | 6768 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6769 | || EQ (vertical_type, Qright) |
6770 | || EQ (vertical_type, Qt))) | |
6771 | error ("Invalid type of vertical scroll bar"); | |
6772 | ||
949cf20f KS |
6773 | if (!EQ (w->scroll_bar_width, width) |
6774 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6775 | { | |
6776 | w->scroll_bar_width = width; | |
6777 | w->vertical_scroll_bar_type = vertical_type; | |
6778 | ||
6779 | adjust_window_margins (w); | |
6780 | ||
6781 | clear_glyph_matrix (w->current_matrix); | |
6782 | w->window_end_valid = Qnil; | |
6783 | ||
6784 | ++windows_or_buffers_changed; | |
6785 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6786 | } | |
6787 | ||
6788 | return Qnil; | |
6789 | } | |
6790 | ||
6791 | ||
6792 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6793 | 0, 1, 0, | |
6794 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6795 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6796 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6797 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6798 | value. */) | |
949cf20f KS |
6799 | (window) |
6800 | Lisp_Object window; | |
6801 | { | |
6802 | struct window *w = decode_window (window); | |
6803 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6804 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6805 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6806 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6807 | Fcons (w->vertical_scroll_bar_type, | |
6808 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6809 | } |
6810 | ||
6811 | ||
7ab12479 | 6812 | \f |
5500c422 GM |
6813 | /*********************************************************************** |
6814 | Smooth scrolling | |
6815 | ***********************************************************************/ | |
6816 | ||
0cc1039f | 6817 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6818 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6819 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6820 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6821 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6822 | (window, pixels_p) |
6823 | Lisp_Object window, pixels_p; | |
5500c422 | 6824 | { |
47004952 | 6825 | Lisp_Object result; |
5500c422 GM |
6826 | struct frame *f; |
6827 | struct window *w; | |
177c0ea7 | 6828 | |
5500c422 GM |
6829 | if (NILP (window)) |
6830 | window = selected_window; | |
47004952 | 6831 | else |
b7826503 | 6832 | CHECK_WINDOW (window); |
5500c422 GM |
6833 | w = XWINDOW (window); |
6834 | f = XFRAME (w->frame); | |
177c0ea7 | 6835 | |
5500c422 | 6836 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6837 | result = (NILP (pixels_p) |
6838 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6839 | : make_number (-w->vscroll)); | |
5500c422 | 6840 | else |
47004952 GM |
6841 | result = make_number (0); |
6842 | return result; | |
5500c422 GM |
6843 | } |
6844 | ||
6845 | ||
6846 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6847 | 2, 3, 0, |
fdb82f93 | 6848 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6849 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6850 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6851 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6852 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6853 | corresponds to an integral number of pixels. The return value is the | |
6854 | result of this rounding. | |
6855 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6856 | (window, vscroll, pixels_p) |
6857 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6858 | { |
6859 | struct window *w; | |
6860 | struct frame *f; | |
177c0ea7 | 6861 | |
5500c422 GM |
6862 | if (NILP (window)) |
6863 | window = selected_window; | |
47004952 | 6864 | else |
b7826503 PJ |
6865 | CHECK_WINDOW (window); |
6866 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6867 | |
5500c422 GM |
6868 | w = XWINDOW (window); |
6869 | f = XFRAME (w->frame); | |
6870 | ||
6871 | if (FRAME_WINDOW_P (f)) | |
6872 | { | |
6873 | int old_dy = w->vscroll; | |
177c0ea7 | 6874 | |
0cc1039f KS |
6875 | w->vscroll = - (NILP (pixels_p) |
6876 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6877 | : XFLOATINT (vscroll)); | |
47004952 | 6878 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6879 | |
e56263e5 KS |
6880 | if (w->vscroll != old_dy) |
6881 | { | |
6882 | /* Adjust glyph matrix of the frame if the virtual display | |
6883 | area becomes larger than before. */ | |
6884 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6885 | adjust_glyphs (f); | |
177c0ea7 | 6886 | |
e56263e5 KS |
6887 | /* Prevent redisplay shortcuts. */ |
6888 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6889 | } | |
5500c422 | 6890 | } |
177c0ea7 | 6891 | |
0cc1039f | 6892 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6893 | } |
177c0ea7 | 6894 | |
7bbb5782 GM |
6895 | \f |
6896 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6897 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6898 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6899 | |
6900 | void | |
f95464e4 | 6901 | foreach_window (f, fn, user_data) |
7bbb5782 | 6902 | struct frame *f; |
f95464e4 GM |
6903 | int (* fn) P_ ((struct window *, void *)); |
6904 | void *user_data; | |
7bbb5782 | 6905 | { |
76fb556f YM |
6906 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
6907 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
6908 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6909 | } |
6910 | ||
6911 | ||
6912 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6913 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6914 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6915 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6916 | |
67492200 | 6917 | static int |
f95464e4 | 6918 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 6919 | struct window *w; |
f95464e4 GM |
6920 | int (* fn) P_ ((struct window *, void *)); |
6921 | void *user_data; | |
7bbb5782 | 6922 | { |
67492200 | 6923 | int cont; |
177c0ea7 | 6924 | |
67492200 | 6925 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6926 | { |
6927 | if (!NILP (w->hchild)) | |
f95464e4 | 6928 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6929 | else if (!NILP (w->vchild)) |
f95464e4 | 6930 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6931 | else |
0f532a9a | 6932 | cont = fn (w, user_data); |
177c0ea7 | 6933 | |
7bbb5782 GM |
6934 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6935 | } | |
67492200 GM |
6936 | |
6937 | return cont; | |
7bbb5782 GM |
6938 | } |
6939 | ||
6940 | ||
6d194a45 | 6941 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6942 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6943 | the window start. */ |
6944 | ||
67492200 | 6945 | static int |
7bbb5782 GM |
6946 | freeze_window_start (w, freeze_p) |
6947 | struct window *w; | |
f95464e4 | 6948 | void *freeze_p; |
7bbb5782 | 6949 | { |
08c1d235 SM |
6950 | if (MINI_WINDOW_P (w) |
6951 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6952 | && (w == XWINDOW (selected_window) | |
6953 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6954 | && ! NILP (Vminibuf_scroll_window) | |
6955 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6956 | freeze_p = NULL; |
177c0ea7 | 6957 | |
f95464e4 | 6958 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6959 | return 1; |
7bbb5782 GM |
6960 | } |
6961 | ||
6962 | ||
6963 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6964 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6965 | means freeze the window start. */ | |
6966 | ||
6967 | void | |
6968 | freeze_window_starts (f, freeze_p) | |
6969 | struct frame *f; | |
6970 | int freeze_p; | |
6971 | { | |
cbccabec | 6972 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6973 | } |
5500c422 GM |
6974 | |
6975 | \f | |
6976 | /*********************************************************************** | |
6977 | Initialization | |
6978 | ***********************************************************************/ | |
6979 | ||
cbff28e8 | 6980 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 6981 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
6982 | |
6983 | int | |
2f8274be | 6984 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 6985 | Lisp_Object c1, c2; |
2f8274be | 6986 | int ignore_positions; |
cbff28e8 RS |
6987 | { |
6988 | register struct save_window_data *d1, *d2; | |
6989 | struct Lisp_Vector *sw1, *sw2; | |
6990 | int i; | |
6991 | ||
663fbbba KS |
6992 | CHECK_WINDOW_CONFIGURATION (c1); |
6993 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 6994 | |
cbff28e8 RS |
6995 | d1 = (struct save_window_data *) XVECTOR (c1); |
6996 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6997 | sw1 = XVECTOR (d1->saved_windows); | |
6998 | sw2 = XVECTOR (d2->saved_windows); | |
6999 | ||
b05b4e27 | 7000 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 7001 | return 0; |
b05b4e27 | 7002 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 7003 | return 0; |
b05b4e27 | 7004 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
7005 | return 0; |
7006 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7007 | return 0; | |
7008 | /* Don't compare the current_window field directly. | |
7009 | Instead see w1_is_current and w2_is_current, below. */ | |
7010 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7011 | return 0; | |
2f8274be | 7012 | if (! ignore_positions) |
3f49fddc KS |
7013 | { |
7014 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7015 | return 0; | |
7016 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7017 | return 0; | |
7018 | } | |
cbff28e8 RS |
7019 | /* Don't compare the root_window field. |
7020 | We don't require the two configurations | |
7021 | to use the same window object, | |
7022 | and the two root windows must be equivalent | |
7023 | if everything else compares equal. */ | |
7024 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7025 | return 0; | |
cbff28e8 RS |
7026 | |
7027 | /* Verify that the two confis have the same number of windows. */ | |
7028 | if (sw1->size != sw2->size) | |
7029 | return 0; | |
7030 | ||
7031 | for (i = 0; i < sw1->size; i++) | |
7032 | { | |
7033 | struct saved_window *p1, *p2; | |
7034 | int w1_is_current, w2_is_current; | |
7035 | ||
7036 | p1 = SAVED_WINDOW_N (sw1, i); | |
7037 | p2 = SAVED_WINDOW_N (sw2, i); | |
7038 | ||
7039 | /* Verify that the current windows in the two | |
7040 | configurations correspond to each other. */ | |
7041 | w1_is_current = EQ (d1->current_window, p1->window); | |
7042 | w2_is_current = EQ (d2->current_window, p2->window); | |
7043 | ||
7044 | if (w1_is_current != w2_is_current) | |
7045 | return 0; | |
7046 | ||
7047 | /* Verify that the corresponding windows do match. */ | |
7048 | if (! EQ (p1->buffer, p2->buffer)) | |
7049 | return 0; | |
949cf20f | 7050 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7051 | return 0; |
949cf20f | 7052 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7053 | return 0; |
949cf20f | 7054 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7055 | return 0; |
949cf20f | 7056 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7057 | return 0; |
cbff28e8 RS |
7058 | if (! EQ (p1->display_table, p2->display_table)) |
7059 | return 0; | |
7060 | if (! EQ (p1->parent, p2->parent)) | |
7061 | return 0; | |
7062 | if (! EQ (p1->prev, p2->prev)) | |
7063 | return 0; | |
2f8274be RS |
7064 | if (! ignore_positions) |
7065 | { | |
7066 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7067 | return 0; | |
ea68264b GM |
7068 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7069 | return 0; | |
2f8274be RS |
7070 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7071 | return 0; | |
7072 | if (NILP (Fequal (p1->start, p2->start))) | |
7073 | return 0; | |
7074 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7075 | return 0; | |
7076 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7077 | return 0; | |
7078 | } | |
949cf20f KS |
7079 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7080 | return 0; | |
7081 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7082 | return 0; | |
7083 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7084 | return 0; | |
7085 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7086 | return 0; | |
7087 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7088 | return 0; | |
7089 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7090 | return 0; | |
7091 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7092 | return 0; | |
cbff28e8 RS |
7093 | } |
7094 | ||
7095 | return 1; | |
7096 | } | |
2f8274be RS |
7097 | |
7098 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7099 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7100 | doc: /* Compare two window configurations as regards the structure of windows. |
7101 | This function ignores details such as the values of point and mark | |
7102 | and scrolling positions. */) | |
7103 | (x, y) | |
2f8274be RS |
7104 | Lisp_Object x, y; |
7105 | { | |
7106 | if (compare_window_configurations (x, y, 1)) | |
7107 | return Qt; | |
7108 | return Qnil; | |
7109 | } | |
cbff28e8 | 7110 | \f |
dfcf069d | 7111 | void |
7ab12479 JB |
7112 | init_window_once () |
7113 | { | |
3224dac1 | 7114 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7115 | XSETFRAME (selected_frame, f); |
7116 | Vterminal_frame = selected_frame; | |
7117 | minibuf_window = f->minibuffer_window; | |
7118 | selected_window = f->selected_window; | |
7119 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7120 | |
7121 | window_initialized = 1; | |
7ab12479 JB |
7122 | } |
7123 | ||
67492200 GM |
7124 | void |
7125 | init_window () | |
7126 | { | |
7127 | Vwindow_list = Qnil; | |
7128 | } | |
7129 | ||
dfcf069d | 7130 | void |
7ab12479 JB |
7131 | syms_of_window () |
7132 | { | |
c525d842 CY |
7133 | Qscroll_up = intern ("scroll-up"); |
7134 | staticpro (&Qscroll_up); | |
7135 | ||
7136 | Qscroll_down = intern ("scroll-down"); | |
7137 | staticpro (&Qscroll_down); | |
7138 | ||
8a37516b GM |
7139 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7140 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7141 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7142 | |
543f5fb1 RS |
7143 | staticpro (&Qwindow_configuration_change_hook); |
7144 | Qwindow_configuration_change_hook | |
7145 | = intern ("window-configuration-change-hook"); | |
7146 | ||
7ab12479 JB |
7147 | Qwindowp = intern ("windowp"); |
7148 | staticpro (&Qwindowp); | |
7149 | ||
3f8ab7bd RS |
7150 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7151 | staticpro (&Qwindow_configuration_p); | |
7152 | ||
806b4d9b JB |
7153 | Qwindow_live_p = intern ("window-live-p"); |
7154 | staticpro (&Qwindow_live_p); | |
605be8af | 7155 | |
87478b52 SM |
7156 | Qdisplay_buffer = intern ("display-buffer"); |
7157 | staticpro (&Qdisplay_buffer); | |
7158 | ||
2cccc823 | 7159 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7160 | staticpro (&Qtemp_buffer_show_hook); |
7161 | ||
67492200 | 7162 | staticpro (&Vwindow_list); |
8bfb170b KS |
7163 | |
7164 | minibuf_selected_window = Qnil; | |
3dbab091 | 7165 | staticpro (&minibuf_selected_window); |
67492200 | 7166 | |
c876b227 | 7167 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7168 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7169 | window_scroll_preserve_hpos = -1; |
7170 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7171 | |
7ab12479 | 7172 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7173 | doc: /* Non-nil means call as function to display a help buffer. |
7174 | The function is called with one argument, the buffer to be displayed. | |
7175 | Used by `with-output-to-temp-buffer'. | |
7176 | If this function is used, then it must do the entire job of showing | |
7177 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7178 | Vtemp_buffer_show_function = Qnil; |
7179 | ||
7ab12479 | 7180 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7181 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7182 | Vminibuf_scroll_window = Qnil; |
7183 | ||
cc91894c | 7184 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7185 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7186 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7187 | is displayed in the `mode-line' face. */); | |
7188 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7189 | |
7ab12479 | 7190 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7191 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7192 | Vother_window_scroll_buffer = Qnil; |
7193 | ||
e56263e5 KS |
7194 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7195 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7196 | auto_window_vscroll_p = 1; | |
7197 | ||
7ab12479 | 7198 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, |
fdb82f93 | 7199 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7200 | next_screen_context_lines = 2; |
7201 | ||
7ab12479 | 7202 | DEFVAR_INT ("window-min-height", &window_min_height, |
047aaeb9 MR |
7203 | doc: /* Allow deleting windows less than this tall. |
7204 | The value is measured in line units. If a window wants a modeline it | |
7205 | is counted as one line. | |
7206 | ||
7207 | Emacs honors settings of this variable when enlarging or shrinking | |
7208 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7209 | window_min_height = 4; |
7210 | ||
7211 | DEFVAR_INT ("window-min-width", &window_min_width, | |
047aaeb9 MR |
7212 | doc: /* Allow deleting windows less than this wide. |
7213 | The value is measured in characters and includes any fringes or | |
7214 | the scrollbar. | |
7215 | ||
7216 | Emacs honors settings of this variable when enlarging or shrinking | |
7217 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7218 | window_min_width = 10; |
7219 | ||
5500c422 GM |
7220 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7221 | &Vscroll_preserve_screen_position, | |
c876b227 | 7222 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7223 | A value of nil means point does not keep its screen position except |
7224 | at the scroll margin or window boundary respectively. | |
7225 | A value of t means point keeps its screen position if the scroll | |
7226 | command moved it vertically out of the window, e.g. when scrolling | |
7227 | by full screens. | |
7228 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7229 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7230 | |
a1562258 SM |
7231 | DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type, |
7232 | doc: /* Type of marker to use for `window-point'. */); | |
7233 | Vwindow_point_insertion_type = Qnil; | |
7234 | ||
543f5fb1 RS |
7235 | DEFVAR_LISP ("window-configuration-change-hook", |
7236 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7237 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7238 | The buffer-local part is run once per window, with the relevant window |
7239 | selected; while the global part is run only once for the modified frame, | |
7240 | with the relevant frame selected. */); | |
543f5fb1 RS |
7241 | Vwindow_configuration_change_hook = Qnil; |
7242 | ||
7ab12479 JB |
7243 | defsubr (&Sselected_window); |
7244 | defsubr (&Sminibuffer_window); | |
7245 | defsubr (&Swindow_minibuffer_p); | |
7246 | defsubr (&Swindowp); | |
806b4d9b | 7247 | defsubr (&Swindow_live_p); |
7ab12479 | 7248 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7249 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7250 | defsubr (&Swindow_buffer); |
7251 | defsubr (&Swindow_height); | |
7252 | defsubr (&Swindow_width); | |
35ea56c9 | 7253 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7254 | defsubr (&Swindow_hscroll); |
7255 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7256 | defsubr (&Swindow_redisplay_end_trigger); |
7257 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7258 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7259 | defsubr (&Swindow_pixel_edges); |
7260 | defsubr (&Swindow_inside_edges); | |
7261 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7262 | defsubr (&Scoordinates_in_window_p); |
7263 | defsubr (&Swindow_at); | |
7ab12479 JB |
7264 | defsubr (&Swindow_point); |
7265 | defsubr (&Swindow_start); | |
7266 | defsubr (&Swindow_end); | |
7267 | defsubr (&Sset_window_point); | |
7268 | defsubr (&Sset_window_start); | |
7269 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7270 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7271 | defsubr (&Swindow_display_table); |
7272 | defsubr (&Sset_window_display_table); | |
7273 | defsubr (&Snext_window); | |
7274 | defsubr (&Sprevious_window); | |
7275 | defsubr (&Sother_window); | |
7276 | defsubr (&Sget_lru_window); | |
7277 | defsubr (&Sget_largest_window); | |
7278 | defsubr (&Sget_buffer_window); | |
7279 | defsubr (&Sdelete_other_windows); | |
7280 | defsubr (&Sdelete_windows_on); | |
7281 | defsubr (&Sreplace_buffer_in_windows); | |
7282 | defsubr (&Sdelete_window); | |
7283 | defsubr (&Sset_window_buffer); | |
7284 | defsubr (&Sselect_window); | |
6b61353c | 7285 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7286 | defsubr (&Ssplit_window); |
7287 | defsubr (&Senlarge_window); | |
7288 | defsubr (&Sshrink_window); | |
0d384044 | 7289 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7290 | defsubr (&Sscroll_up); |
7291 | defsubr (&Sscroll_down); | |
7292 | defsubr (&Sscroll_left); | |
7293 | defsubr (&Sscroll_right); | |
ccd0664b | 7294 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7295 | defsubr (&Sscroll_other_window); |
fa832261 | 7296 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7297 | defsubr (&Srecenter); |
81fe0836 | 7298 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7299 | defsubr (&Smove_to_window_line); |
7300 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7301 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7302 | defsubr (&Sset_window_configuration); |
7303 | defsubr (&Scurrent_window_configuration); | |
7304 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7305 | defsubr (&Swindow_tree); |
5500c422 GM |
7306 | defsubr (&Sset_window_margins); |
7307 | defsubr (&Swindow_margins); | |
949cf20f KS |
7308 | defsubr (&Sset_window_fringes); |
7309 | defsubr (&Swindow_fringes); | |
7310 | defsubr (&Sset_window_scroll_bars); | |
7311 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7312 | defsubr (&Swindow_vscroll); |
7313 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7314 | defsubr (&Scompare_window_configurations); |
67492200 | 7315 | defsubr (&Swindow_list); |
cfbb2395 JB |
7316 | defsubr (&Swindow_parameters); |
7317 | defsubr (&Swindow_parameter); | |
7318 | defsubr (&Sset_window_parameter); | |
7319 | ||
7ab12479 JB |
7320 | } |
7321 | ||
dfcf069d | 7322 | void |
7ab12479 JB |
7323 | keys_of_window () |
7324 | { | |
7325 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7326 | initial_define_key (control_x_map, '2', "split-window"); | |
7327 | initial_define_key (control_x_map, '0', "delete-window"); | |
7328 | initial_define_key (control_x_map, 'o', "other-window"); | |
7329 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7330 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7331 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7332 | ||
7333 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7334 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7335 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7336 | ||
7337 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7338 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7339 | } | |
6b61353c KH |
7340 | |
7341 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7342 | (do not change this comment) */ |