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, |
49f70d46 | 4 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
8cabe764 | 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 | 23 | #include <stdio.h> |
d7306fe6 | 24 | #include <setjmp.h> |
4d553a13 | 25 | |
7ab12479 JB |
26 | #include "lisp.h" |
27 | #include "buffer.h" | |
3e4731a3 | 28 | #include "keyboard.h" |
e35f6ff7 | 29 | #include "keymap.h" |
44fa5b1e | 30 | #include "frame.h" |
7ab12479 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "indent.h" | |
34 | #include "termchar.h" | |
35 | #include "disptab.h" | |
dfcf069d | 36 | #include "dispextern.h" |
5500c422 GM |
37 | #include "blockinput.h" |
38 | #include "intervals.h" | |
de509a60 | 39 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 40 | |
6d55d620 | 41 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 42 | #include "xterm.h" |
5500c422 | 43 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
44 | #ifdef WINDOWSNT |
45 | #include "w32term.h" | |
46 | #endif | |
1e3c8885 EZ |
47 | #ifdef MSDOS |
48 | #include "msdos.h" | |
49 | #endif | |
edfda783 AR |
50 | #ifdef HAVE_NS |
51 | #include "nsterm.h" | |
52 | #endif | |
5500c422 | 53 | |
5500c422 | 54 | |
3f8ab7bd | 55 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
87478b52 | 56 | Lisp_Object Qdisplay_buffer; |
c525d842 | 57 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 58 | Lisp_Object Qwindow_size_fixed; |
87478b52 | 59 | |
49b996e7 | 60 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 61 | |
521b203e | 62 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 63 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
64 | static int count_windows P_ ((struct window *)); |
65 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
66 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
67 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
68 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
047aaeb9 MR |
69 | static int window_min_size_1 P_ ((struct window *, int, int)); |
70 | static int window_min_size_2 P_ ((struct window *, int, int)); | |
71 | static int window_min_size P_ ((struct window *, int, int, int, int *)); | |
5fe0b054 | 72 | static void size_window P_ ((Lisp_Object, int, int, int, int, int)); |
f95464e4 | 73 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 74 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 75 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 76 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 77 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
78 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
79 | Lisp_Object)); | |
67492200 GM |
80 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
81 | Lisp_Object, int)); | |
82 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
83 | Lisp_Object *)); | |
f95464e4 GM |
84 | static int foreach_window_1 P_ ((struct window *, |
85 | int (* fn) (struct window *, void *), | |
86 | void *)); | |
cd2904bd | 87 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
bd2a4b24 | 88 | static Lisp_Object select_window P_ ((Lisp_Object, Lisp_Object, int)); |
b7354ddf | 89 | |
7ab12479 JB |
90 | /* This is the window in which the terminal's cursor should |
91 | be left when nothing is being done with it. This must | |
92 | always be a leaf window, and its buffer is selected by | |
93 | the top level editing loop at the end of each command. | |
94 | ||
95 | This value is always the same as | |
44fa5b1e | 96 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
97 | |
98 | Lisp_Object selected_window; | |
99 | ||
67492200 GM |
100 | /* A list of all windows for use by next_window and Fwindow_list. |
101 | Functions creating or deleting windows should invalidate this cache | |
102 | by setting it to nil. */ | |
103 | ||
104 | Lisp_Object Vwindow_list; | |
105 | ||
5500c422 GM |
106 | /* The mini-buffer window of the selected frame. |
107 | Note that you cannot test for mini-bufferness of an arbitrary window | |
108 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 109 | the selected window. */ |
5500c422 | 110 | |
7ab12479 JB |
111 | Lisp_Object minibuf_window; |
112 | ||
3f49fddc KS |
113 | /* Non-nil means it is the window whose mode line should be |
114 | shown as the selected window when the minibuffer is selected. */ | |
115 | ||
3dbab091 | 116 | Lisp_Object minibuf_selected_window; |
3f49fddc | 117 | |
7ab12479 | 118 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
119 | when the mini-buffer is selected. */ |
120 | ||
7ab12479 JB |
121 | Lisp_Object Vminibuf_scroll_window; |
122 | ||
123 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 124 | |
7ab12479 JB |
125 | Lisp_Object Vother_window_scroll_buffer; |
126 | ||
7ab12479 | 127 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 128 | |
7ab12479 JB |
129 | Lisp_Object Vtemp_buffer_show_function; |
130 | ||
e56263e5 KS |
131 | /* Non-zero means line and page scrolling on tall lines (with images) |
132 | does partial scrolling by modifying window-vscroll. */ | |
133 | ||
134 | int auto_window_vscroll_p; | |
135 | ||
cc91894c KS |
136 | /* Non-zero means to use mode-line-inactive face in all windows but the |
137 | selected-window and the minibuffer-scroll-window when the | |
138 | minibuffer is active. */ | |
139 | int mode_line_in_non_selected_windows; | |
26124d5e | 140 | |
7ab12479 | 141 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 142 | |
31ade731 SM |
143 | EMACS_INT window_min_height; |
144 | EMACS_INT window_min_width; | |
7ab12479 | 145 | |
a58ec57d | 146 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 147 | |
a58ec57d RS |
148 | Lisp_Object Qtemp_buffer_show_hook; |
149 | ||
7ab12479 | 150 | /* Number of lines of continuity in scrolling by screenfuls. */ |
5500c422 | 151 | |
31ade731 | 152 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
153 | |
154 | /* Incremented for each window created. */ | |
5500c422 | 155 | |
7ab12479 JB |
156 | static int sequence_number; |
157 | ||
5b03d3c0 | 158 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 159 | |
5b03d3c0 RS |
160 | static int window_initialized; |
161 | ||
543f5fb1 | 162 | /* Hook to run when window config changes. */ |
5500c422 | 163 | |
eeca6f6f SM |
164 | static Lisp_Object Qwindow_configuration_change_hook; |
165 | static Lisp_Object Vwindow_configuration_change_hook; | |
543f5fb1 | 166 | |
d0c38d63 | 167 | /* Non-nil means scroll commands try to put point |
9317a85d | 168 | at the same screen height as previously. */ |
9317a85d | 169 | |
5500c422 GM |
170 | Lisp_Object Vscroll_preserve_screen_position; |
171 | ||
a1562258 SM |
172 | /* Non-nil means that text is inserted before window's markers. */ |
173 | ||
174 | Lisp_Object Vwindow_point_insertion_type; | |
175 | ||
0d384044 RS |
176 | /* Incremented by 1 whenever a window is deleted. */ |
177 | ||
178 | int window_deletion_count; | |
179 | ||
66d43aea LT |
180 | /* Used by the function window_scroll_pixel_based */ |
181 | ||
c876b227 | 182 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 183 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 184 | |
c876b227 SM |
185 | /* Same for window_scroll_line_based. */ |
186 | ||
187 | static int window_scroll_preserve_hpos; | |
188 | static int window_scroll_preserve_vpos; | |
189 | ||
31ade731 | 190 | extern EMACS_INT scroll_margin; |
9317a85d | 191 | |
dba06815 | 192 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
666e158e MB |
193 | |
194 | /* If non-nil, then the `recenter' command with a nil argument | |
195 | the entire frame to be redrawn; the special value `tty' causes the | |
196 | frame to be redrawn only if it is a tty frame. */ | |
197 | ||
198 | static Lisp_Object Vrecenter_redisplay; | |
199 | extern Lisp_Object Qtty; | |
200 | ||
7ab12479 JB |
201 | \f |
202 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
23fe745a | 203 | doc: /* Return t if OBJECT is a window. */) |
fdb82f93 | 204 | (object) |
413430c5 | 205 | Lisp_Object object; |
7ab12479 | 206 | { |
413430c5 | 207 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
208 | } |
209 | ||
806b4d9b | 210 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
23fe745a | 211 | doc: /* Return t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
212 | (object) |
213 | Lisp_Object object; | |
605be8af | 214 | { |
9e571f49 | 215 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
216 | } |
217 | ||
7ab12479 JB |
218 | Lisp_Object |
219 | make_window () | |
220 | { | |
cffec418 | 221 | Lisp_Object val; |
7ab12479 | 222 | register struct window *p; |
cffec418 | 223 | |
26605be9 | 224 | p = allocate_window (); |
2a1893f4 SM |
225 | ++sequence_number; |
226 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
227 | XSETFASTINT (p->left_col, 0); |
228 | XSETFASTINT (p->top_line, 0); | |
229 | XSETFASTINT (p->total_lines, 0); | |
230 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 231 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 232 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 233 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
234 | p->start = Fmake_marker (); |
235 | p->pointm = Fmake_marker (); | |
d834a2e9 | 236 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 237 | p->frame = Qnil; |
7ab12479 JB |
238 | p->display_table = Qnil; |
239 | p->dedicated = Qnil; | |
cfbb2395 | 240 | p->window_parameters = Qnil; |
5500c422 GM |
241 | p->pseudo_window_p = 0; |
242 | bzero (&p->cursor, sizeof (p->cursor)); | |
243 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
244 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
245 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 246 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 247 | p->phys_cursor_type = -1; |
4b26579e | 248 | p->phys_cursor_width = -1; |
5500c422 GM |
249 | p->must_be_updated_p = 0; |
250 | XSETFASTINT (p->window_end_vpos, 0); | |
251 | XSETFASTINT (p->window_end_pos, 0); | |
252 | p->window_end_valid = Qnil; | |
253 | p->vscroll = 0; | |
cffec418 | 254 | XSETWINDOW (val, p); |
5500c422 | 255 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 256 | p->frozen_window_start_p = 0; |
6b448755 | 257 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
258 | p->left_margin_cols = Qnil; |
259 | p->right_margin_cols = Qnil; | |
260 | p->left_fringe_width = Qnil; | |
261 | p->right_fringe_width = Qnil; | |
262 | p->fringes_outside_margins = Qnil; | |
263 | p->scroll_bar_width = Qnil; | |
264 | p->vertical_scroll_bar_type = Qt; | |
047aaeb9 | 265 | p->resize_proportionally = Qnil; |
67492200 GM |
266 | |
267 | Vwindow_list = Qnil; | |
7ab12479 JB |
268 | return val; |
269 | } | |
270 | ||
271 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
272 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
273 | () | |
7ab12479 JB |
274 | { |
275 | return selected_window; | |
276 | } | |
277 | ||
83762ba4 | 278 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
279 | doc: /* Return the window used now for minibuffers. |
280 | If the optional argument FRAME is specified, return the minibuffer window | |
281 | used by that frame. */) | |
282 | (frame) | |
83762ba4 | 283 | Lisp_Object frame; |
7ab12479 | 284 | { |
83762ba4 | 285 | if (NILP (frame)) |
1ae1a37d | 286 | frame = selected_frame; |
b7826503 | 287 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 288 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
289 | } |
290 | ||
605be8af | 291 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
23fe745a | 292 | doc: /* Return non-nil if WINDOW is a minibuffer window. |
6b61353c | 293 | WINDOW defaults to the selected window. */) |
fdb82f93 | 294 | (window) |
7ab12479 JB |
295 | Lisp_Object window; |
296 | { | |
297 | struct window *w = decode_window (window); | |
53bb6b99 | 298 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
299 | } |
300 | ||
301 | ||
7ab12479 | 302 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 303 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 304 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
305 | Return nil if that position is scrolled vertically out of view. |
306 | If a character is only partially visible, nil is returned, unless the | |
307 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 308 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 309 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
310 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
311 | ||
312 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
313 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
314 | where X and Y are the pixel coordinates relative to the top left corner | |
315 | of the window. The remaining elements are omitted if the character after | |
316 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 317 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 318 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 319 | (pos, window, partially) |
5cdb3cf3 | 320 | Lisp_Object pos, window, partially; |
7ab12479 JB |
321 | { |
322 | register struct window *w; | |
7ab12479 JB |
323 | register int posint; |
324 | register struct buffer *buf; | |
9a132b1f | 325 | struct text_pos top; |
0cc1039f | 326 | Lisp_Object in_window = Qnil; |
5a857365 | 327 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 328 | int x, y; |
7ab12479 | 329 | |
f28b75a9 MB |
330 | w = decode_window (window); |
331 | buf = XBUFFER (w->buffer); | |
332 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
333 | ||
120b7781 KS |
334 | if (EQ (pos, Qt)) |
335 | posint = -1; | |
336 | else if (!NILP (pos)) | |
7ab12479 | 337 | { |
b7826503 | 338 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
339 | posint = XINT (pos); |
340 | } | |
f28b75a9 MB |
341 | else if (w == XWINDOW (selected_window)) |
342 | posint = PT; | |
343 | else | |
344 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 345 | |
0cc1039f KS |
346 | /* If position is above window start or outside buffer boundaries, |
347 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
348 | if ((EQ (pos, Qt) |
349 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
350 | && CHARPOS (top) >= BUF_BEGV (buf) |
351 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 352 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 353 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
354 | in_window = Qt; |
355 | ||
356 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
357 | { |
358 | Lisp_Object part = Qnil; | |
359 | if (!fully_p) | |
360 | part = list4 (make_number (rtop), make_number (rbot), | |
361 | make_number (rowh), make_number (vpos)); | |
362 | in_window = Fcons (make_number (x), | |
363 | Fcons (make_number (y), part)); | |
364 | } | |
365 | ||
9a132b1f | 366 | return in_window; |
7ab12479 | 367 | } |
53bb6b99 | 368 | |
536833ab | 369 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 370 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
371 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
372 | If WINDOW is nil or omitted, use selected window. | |
373 | ||
7bbc67d2 KS |
374 | Return height of current line if LINE is omitted or nil. Return height of |
375 | header or mode line if LINE is `header-line' and `mode-line'. | |
376 | Otherwise, LINE is a text line number starting from 0. A negative number | |
377 | counts from the end of the window. | |
536833ab | 378 | |
7bbc67d2 | 379 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 380 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 381 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 382 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
383 | the bottom of the text line. If there are off-window pixels at the top |
384 | of the (first) text line, YPOS is negative. | |
536833ab KS |
385 | |
386 | Return nil if window display is not up-to-date. In that case, use | |
387 | `pos-visible-in-window-p' to obtain the information. */) | |
388 | (line, window) | |
389 | Lisp_Object line, window; | |
b3a10345 KS |
390 | { |
391 | register struct window *w; | |
392 | register struct buffer *b; | |
393 | struct glyph_row *row, *end_row; | |
536833ab | 394 | int max_y, crop, i, n; |
b3a10345 KS |
395 | |
396 | w = decode_window (window); | |
397 | ||
398 | if (noninteractive | |
b3a10345 | 399 | || w->pseudo_window_p) |
7bbc67d2 | 400 | return Qnil; |
b3a10345 KS |
401 | |
402 | CHECK_BUFFER (w->buffer); | |
403 | b = XBUFFER (w->buffer); | |
404 | ||
405 | /* Fail if current matrix is not up-to-date. */ | |
406 | if (NILP (w->window_end_valid) | |
407 | || current_buffer->clip_changed | |
408 | || current_buffer->prevent_redisplay_optimizations_p | |
409 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
410 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
411 | return Qnil; | |
412 | ||
7bbc67d2 KS |
413 | if (NILP (line)) |
414 | { | |
415 | i = w->cursor.vpos; | |
416 | if (i < 0 || i >= w->current_matrix->nrows | |
417 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
418 | return Qnil; | |
419 | max_y = window_text_bottom_y (w); | |
420 | goto found_row; | |
421 | } | |
422 | ||
536833ab | 423 | if (EQ (line, Qheader_line)) |
b3a10345 | 424 | { |
536833ab KS |
425 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
426 | return Qnil; | |
427 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
428 | if (!row->enabled_p) |
429 | return Qnil; | |
536833ab KS |
430 | return list4 (make_number (row->height), |
431 | make_number (0), make_number (0), | |
432 | make_number (0)); | |
b3a10345 | 433 | } |
536833ab KS |
434 | |
435 | if (EQ (line, Qmode_line)) | |
b3a10345 | 436 | { |
536833ab KS |
437 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
438 | if (!row->enabled_p) | |
439 | return Qnil; | |
440 | return list4 (make_number (row->height), | |
441 | make_number (0), /* not accurate */ | |
442 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
443 | + window_text_bottom_y (w)), | |
444 | make_number (0)); | |
445 | } | |
b3a10345 | 446 | |
536833ab | 447 | CHECK_NUMBER (line); |
7bbc67d2 | 448 | n = XINT (line); |
536833ab KS |
449 | |
450 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
451 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
452 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 453 | i = 0; |
536833ab KS |
454 | |
455 | while ((n < 0 || i < n) | |
456 | && row <= end_row && row->enabled_p | |
457 | && row->y + row->height < max_y) | |
458 | row++, i++; | |
b3a10345 | 459 | |
536833ab KS |
460 | if (row > end_row || !row->enabled_p) |
461 | return Qnil; | |
462 | ||
7bbc67d2 | 463 | if (++n < 0) |
536833ab KS |
464 | { |
465 | if (-n > i) | |
466 | return Qnil; | |
7bbc67d2 KS |
467 | row += n; |
468 | i += n; | |
b3a10345 KS |
469 | } |
470 | ||
7bbc67d2 | 471 | found_row: |
536833ab KS |
472 | crop = max (0, (row->y + row->height) - max_y); |
473 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 474 | make_number (i), |
536833ab KS |
475 | make_number (row->y), |
476 | make_number (crop)); | |
b3a10345 KS |
477 | } |
478 | ||
536833ab | 479 | |
7ab12479 JB |
480 | \f |
481 | static struct window * | |
482 | decode_window (window) | |
483 | register Lisp_Object window; | |
484 | { | |
265a9e55 | 485 | if (NILP (window)) |
7ab12479 JB |
486 | return XWINDOW (selected_window); |
487 | ||
b7826503 | 488 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
489 | return XWINDOW (window); |
490 | } | |
491 | ||
6b61353c KH |
492 | static struct window * |
493 | decode_any_window (window) | |
494 | register Lisp_Object window; | |
495 | { | |
496 | if (NILP (window)) | |
497 | return XWINDOW (selected_window); | |
498 | ||
499 | CHECK_WINDOW (window); | |
500 | return XWINDOW (window); | |
501 | } | |
502 | ||
7ab12479 | 503 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
504 | doc: /* Return the buffer that WINDOW is displaying. |
505 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 506 | (window) |
7ab12479 JB |
507 | Lisp_Object window; |
508 | { | |
509 | return decode_window (window)->buffer; | |
510 | } | |
511 | ||
512 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
8fef9de1 MR |
513 | doc: /* Return the number of lines in WINDOW. |
514 | WINDOW defaults to the selected window. | |
515 | ||
a77cfeaf CS |
516 | The return value includes WINDOW's mode line and header line, if any. |
517 | ||
518 | Note: The function does not take into account the value of `line-spacing' | |
519 | when calculating the number of lines in WINDOW. */) | |
fdb82f93 | 520 | (window) |
7ab12479 JB |
521 | Lisp_Object window; |
522 | { | |
6b61353c | 523 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
524 | } |
525 | ||
526 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 | 527 | doc: /* Return the number of display columns in WINDOW. |
d653c8cc MR |
528 | WINDOW defaults to the selected window. |
529 | ||
530 | Note: The return value is the number of columns available for text in | |
531 | WINDOW. If you want to find out how many columns WINDOW takes up, use | |
532 | (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
fdb82f93 | 533 | (window) |
7ab12479 JB |
534 | Lisp_Object window; |
535 | { | |
6b61353c | 536 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
537 | } |
538 | ||
35ea56c9 MR |
539 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
540 | doc: /* Return t if WINDOW is as wide as its frame. | |
541 | WINDOW defaults to the selected window. */) | |
542 | (window) | |
543 | Lisp_Object window; | |
544 | { | |
545 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
546 | } | |
547 | ||
7ab12479 | 548 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
549 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
550 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 551 | (window) |
7ab12479 JB |
552 | Lisp_Object window; |
553 | { | |
554 | return decode_window (window)->hscroll; | |
555 | } | |
556 | ||
557 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 558 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 559 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
560 | |
561 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 562 | window so that the location of point moves off-window. */) |
fdb82f93 | 563 | (window, ncol) |
ea68264b | 564 | Lisp_Object window, ncol; |
7ab12479 | 565 | { |
ea68264b GM |
566 | struct window *w = decode_window (window); |
567 | int hscroll; | |
7ab12479 | 568 | |
b7826503 | 569 | CHECK_NUMBER (ncol); |
ea68264b | 570 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 571 | |
ea68264b GM |
572 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
573 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 574 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 575 | |
c67fa410 | 576 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
577 | return ncol; |
578 | } | |
579 | ||
190eb263 RS |
580 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
581 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 582 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 583 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
584 | See `set-window-redisplay-end-trigger' for more information. */) |
585 | (window) | |
190eb263 RS |
586 | Lisp_Object window; |
587 | { | |
588 | return decode_window (window)->redisplay_end_trigger; | |
589 | } | |
590 | ||
591 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
592 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
593 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
594 | VALUE should be a buffer position (typically a marker) or nil. | |
595 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
596 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
597 | with two arguments: WINDOW, and the end trigger value. | |
598 | Afterwards the end-trigger value is reset to nil. */) | |
599 | (window, value) | |
190eb263 RS |
600 | register Lisp_Object window, value; |
601 | { | |
602 | register struct window *w; | |
603 | ||
604 | w = decode_window (window); | |
605 | w->redisplay_end_trigger = value; | |
606 | return value; | |
607 | } | |
608 | ||
7ab12479 | 609 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 610 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
611 | The list has the form (LEFT TOP RIGHT BOTTOM). |
612 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
613 | all relative to 0, 0 at top left corner of frame. | |
614 | ||
615 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
616 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
617 | The edges include the space used by WINDOW's scroll bar, display | |
618 | margins, fringes, header line, and/or mode line. For the edges of | |
619 | just the text area, use `window-inside-edges'. */) | |
fdb82f93 | 620 | (window) |
7ab12479 JB |
621 | Lisp_Object window; |
622 | { | |
6b61353c | 623 | register struct window *w = decode_any_window (window); |
7ab12479 | 624 | |
949cf20f KS |
625 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
626 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
627 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
628 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
629 | Qnil)))); | |
7ab12479 JB |
630 | } |
631 | ||
c99a9eb3 RS |
632 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
633 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
634 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
635 | the top left corner of the frame. | |
636 | ||
637 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
638 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
639 | The pixel edges include the space used by WINDOW's scroll bar, display | |
640 | margins, fringes, header line, and/or mode line. For the pixel edges | |
641 | of just the text area, use `window-inside-pixel-edges'. */) | |
c99a9eb3 RS |
642 | (window) |
643 | Lisp_Object window; | |
644 | { | |
6b61353c | 645 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
646 | |
647 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
648 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
649 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
650 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
651 | Qnil)))); | |
652 | } | |
653 | ||
654 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
655 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
656 | The list has the form (LEFT TOP RIGHT BOTTOM). |
657 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
658 | all relative to 0, 0 at top left corner of frame. | |
659 | ||
660 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
661 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
662 | The inside edges do not include the space used by the WINDOW's scroll | |
663 | bar, display margins, fringes, header line, and/or mode line. */) | |
c99a9eb3 RS |
664 | (window) |
665 | Lisp_Object window; | |
666 | { | |
6b61353c | 667 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
668 | |
669 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
670 | + WINDOW_LEFT_MARGIN_COLS (w) | |
671 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
672 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
673 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 674 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
675 | - WINDOW_RIGHT_MARGIN_COLS (w) |
676 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
677 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
678 | - WINDOW_MODE_LINE_LINES (w))); | |
679 | } | |
680 | ||
681 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 682 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
683 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
684 | the top left corner of the frame. | |
685 | ||
686 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
687 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
688 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 RS |
689 | display margins, fringes, header line, and/or mode line. */) |
690 | (window) | |
691 | Lisp_Object window; | |
692 | { | |
6b61353c | 693 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
694 | |
695 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
696 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
697 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
698 | make_number (WINDOW_TOP_EDGE_Y (w) | |
699 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 700 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
701 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
702 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
703 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
704 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
705 | } | |
706 | ||
fbad6f9a | 707 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 708 | If it is not, return ON_NOTHING; |
d5783c40 JB |
709 | if it is in the window's text area, |
710 | set *x and *y to its location relative to the upper left corner | |
711 | of the window, and | |
341f3858 KS |
712 | return ON_TEXT; |
713 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 714 | if it is on the border between the window and its right sibling, |
341f3858 | 715 | return ON_VERTICAL_BORDER. |
6487f669 RS |
716 | if it is on a scroll bar, |
717 | return ON_SCROLL_BAR. | |
341f3858 | 718 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 719 | if it is in left or right fringe of the window, |
341f3858 KS |
720 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
721 | to window-relative coordinates; | |
49b996e7 | 722 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
723 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
724 | to window-relative coordinates. | |
5500c422 GM |
725 | |
726 | X and Y are frame relative pixel coordinates. */ | |
727 | ||
7442878f | 728 | static enum window_part |
d5783c40 JB |
729 | coordinates_in_window (w, x, y) |
730 | register struct window *w; | |
731 | register int *x, *y; | |
732 | { | |
b0228ace GM |
733 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
734 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 735 | enum window_part part; |
949cf20f KS |
736 | int ux = FRAME_COLUMN_WIDTH (f); |
737 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
738 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
739 | /* The width of the area where the vertical line can be dragged. |
740 | (Between mode lines for instance. */ | |
741 | int grabbable_width = ux; | |
949cf20f | 742 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 743 | |
466539bc EZ |
744 | /* In what's below, we subtract 1 when computing right_x because we |
745 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
746 | if (w->pseudo_window_p) |
747 | { | |
748 | left_x = 0; | |
949cf20f KS |
749 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
750 | top_y = WINDOW_TOP_EDGE_Y (w); | |
751 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
752 | } |
753 | else | |
754 | { | |
949cf20f KS |
755 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
756 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
757 | top_y = WINDOW_TOP_EDGE_Y (w); | |
758 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 759 | } |
37962e60 | 760 | |
949cf20f KS |
761 | /* Outside any interesting row? */ |
762 | if (*y < top_y || *y >= bottom_y) | |
763 | return ON_NOTHING; | |
764 | ||
1cb794ba GM |
765 | /* On the mode line or header line? If it's near the start of |
766 | the mode or header line of window that's has a horizontal | |
767 | sibling, say it's on the vertical line. That's to be able | |
768 | to resize windows horizontally in case we're using toolkit | |
769 | scroll bars. */ | |
b0228ace | 770 | |
1cb794ba | 771 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 772 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 773 | { |
949cf20f KS |
774 | part = ON_MODE_LINE; |
775 | ||
776 | header_vertical_border_check: | |
b0228ace GM |
777 | /* We're somewhere on the mode line. We consider the place |
778 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 779 | as the vertical border. If scroll bars on the left, |
b0228ace | 780 | return the right window. */ |
949cf20f KS |
781 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
782 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 783 | { |
1ea40aa2 | 784 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 785 | { |
3f489dc7 KS |
786 | /* Convert X and Y to window relative coordinates. |
787 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
788 | *x = max (0, *x - x0); |
789 | *y -= top_y; | |
790 | return ON_VERTICAL_BORDER; | |
791 | } | |
b0228ace | 792 | } |
79fd290e | 793 | else |
b0228ace | 794 | { |
f6ef1e65 MR |
795 | /* Make sure we're not at the rightmost position of a |
796 | mode-/header-line and there's yet another window on | |
797 | the right. (Bug#1372) */ | |
798 | if ((WINDOW_RIGHTMOST_P (w) || *x < x1) | |
799 | && eabs (*x - x1) < grabbable_width) | |
f8c62b70 | 800 | { |
3f489dc7 KS |
801 | /* Convert X and Y to window relative coordinates. |
802 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
803 | *x = min (x1, *x) - x0; |
804 | *y -= top_y; | |
805 | return ON_VERTICAL_BORDER; | |
806 | } | |
b0228ace | 807 | } |
949cf20f | 808 | |
cb639b8f KS |
809 | if (*x < x0 || *x >= x1) |
810 | return ON_NOTHING; | |
811 | ||
a5303820 KS |
812 | /* Convert X and Y to window relative coordinates. |
813 | Mode line starts at left edge of window. */ | |
814 | *x -= x0; | |
815 | *y -= top_y; | |
949cf20f | 816 | return part; |
b0228ace | 817 | } |
949cf20f KS |
818 | |
819 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 820 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 821 | { |
949cf20f KS |
822 | part = ON_HEADER_LINE; |
823 | goto header_vertical_border_check; | |
1cb794ba | 824 | } |
949cf20f | 825 | |
cb639b8f KS |
826 | if (*x < x0 || *x >= x1) |
827 | return ON_NOTHING; | |
828 | ||
949cf20f KS |
829 | /* Outside any interesting column? */ |
830 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
831 | { |
832 | *y -= top_y; | |
833 | return ON_SCROLL_BAR; | |
834 | } | |
949cf20f KS |
835 | |
836 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
837 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 838 | |
949cf20f KS |
839 | text_left = window_box_left (w, TEXT_AREA); |
840 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
841 | ||
842 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 843 | { |
447e9da0 | 844 | if (!w->pseudo_window_p |
949cf20f | 845 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 846 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 847 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 848 | { |
3f489dc7 KS |
849 | /* Convert X and Y to window relative coordinates. |
850 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
851 | *x = min (right_x, *x) - left_x; |
852 | *y -= top_y; | |
853 | return ON_VERTICAL_BORDER; | |
854 | } | |
fbad6f9a | 855 | } |
447e9da0 GM |
856 | else |
857 | { | |
858 | /* Need to say "*x > right_x" rather than >=, since on character | |
859 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
860 | if (!w->pseudo_window_p |
861 | && !WINDOW_RIGHTMOST_P (w) | |
862 | && *x > right_x - ux) | |
b0228ace GM |
863 | { |
864 | /* On the border on the right side of the window? Assume that | |
865 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
866 | *x = min (right_x, *x) - left_x; |
867 | *y -= top_y; | |
949cf20f | 868 | return ON_VERTICAL_BORDER; |
b0228ace | 869 | } |
447e9da0 | 870 | } |
b0228ace | 871 | |
949cf20f KS |
872 | if (*x < text_left) |
873 | { | |
874 | if (lmargin_width > 0 | |
875 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
876 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
877 | : (*x < left_x + lmargin_width))) | |
a5303820 | 878 | { |
6b61353c | 879 | *x -= left_x; |
a5303820 KS |
880 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
881 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
882 | *y -= top_y; | |
883 | return ON_LEFT_MARGIN; | |
884 | } | |
949cf20f KS |
885 | |
886 | /* Convert X and Y to window-relative pixel coordinates. */ | |
887 | *x -= left_x; | |
888 | *y -= top_y; | |
889 | return ON_LEFT_FRINGE; | |
890 | } | |
891 | ||
892 | if (*x >= text_right) | |
893 | { | |
894 | if (rmargin_width > 0 | |
895 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
896 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
897 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 898 | { |
66d41723 KS |
899 | *x -= right_x - rmargin_width; |
900 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
901 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
902 | *y -= top_y; |
903 | return ON_RIGHT_MARGIN; | |
904 | } | |
949cf20f KS |
905 | |
906 | /* Convert X and Y to window-relative pixel coordinates. */ | |
907 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
908 | *y -= top_y; | |
909 | return ON_RIGHT_FRINGE; | |
910 | } | |
911 | ||
912 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 913 | *x -= text_left; |
949cf20f KS |
914 | *y -= top_y; |
915 | return ON_TEXT; | |
d5783c40 JB |
916 | } |
917 | ||
b0228ace | 918 | |
d5783c40 | 919 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
920 | Scoordinates_in_window_p, 2, 2, 0, |
921 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
922 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
923 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 924 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
925 | frame. |
926 | If COORDINATES are in the text portion of WINDOW, | |
927 | the coordinates relative to the window are returned. | |
928 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
929 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
930 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
931 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 932 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
933 | `vertical-line' is returned. |
934 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
935 | or `right-margin' is returned. */) | |
fdb82f93 | 936 | (coordinates, window) |
d5783c40 JB |
937 | register Lisp_Object coordinates, window; |
938 | { | |
5500c422 GM |
939 | struct window *w; |
940 | struct frame *f; | |
d5783c40 | 941 | int x, y; |
5500c422 | 942 | Lisp_Object lx, ly; |
d5783c40 | 943 | |
6b61353c | 944 | CHECK_WINDOW (window); |
5500c422 GM |
945 | w = XWINDOW (window); |
946 | f = XFRAME (w->frame); | |
b7826503 | 947 | CHECK_CONS (coordinates); |
5500c422 GM |
948 | lx = Fcar (coordinates); |
949 | ly = Fcdr (coordinates); | |
b7826503 PJ |
950 | CHECK_NUMBER_OR_FLOAT (lx); |
951 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
952 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
953 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
954 | |
955 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 956 | { |
7442878f | 957 | case ON_NOTHING: |
d5783c40 JB |
958 | return Qnil; |
959 | ||
7442878f GM |
960 | case ON_TEXT: |
961 | /* X and Y are now window relative pixel coordinates. Convert | |
962 | them to canonical char units before returning them. */ | |
949cf20f KS |
963 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
964 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 965 | |
7442878f | 966 | case ON_MODE_LINE: |
d5783c40 | 967 | return Qmode_line; |
37962e60 | 968 | |
7442878f | 969 | case ON_VERTICAL_BORDER: |
e5d77022 | 970 | return Qvertical_line; |
d5783c40 | 971 | |
7442878f | 972 | case ON_HEADER_LINE: |
045dee35 | 973 | return Qheader_line; |
5500c422 | 974 | |
7442878f GM |
975 | case ON_LEFT_FRINGE: |
976 | return Qleft_fringe; | |
177c0ea7 | 977 | |
7442878f GM |
978 | case ON_RIGHT_FRINGE: |
979 | return Qright_fringe; | |
fbad6f9a | 980 | |
49b996e7 GM |
981 | case ON_LEFT_MARGIN: |
982 | return Qleft_margin; | |
177c0ea7 | 983 | |
49b996e7 GM |
984 | case ON_RIGHT_MARGIN: |
985 | return Qright_margin; | |
986 | ||
6487f669 RS |
987 | case ON_SCROLL_BAR: |
988 | /* Historically we are supposed to return nil in this case. */ | |
989 | return Qnil; | |
990 | ||
d5783c40 JB |
991 | default: |
992 | abort (); | |
993 | } | |
994 | } | |
995 | ||
67492200 GM |
996 | |
997 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
998 | Check if window W contains coordinates specified by USER_DATA which |
999 | is actually a pointer to a struct check_window_data CW. | |
1000 | ||
1001 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1002 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1003 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1004 | zero from this function to stop iterating over windows. */ |
1005 | ||
1006 | struct check_window_data | |
1007 | { | |
1008 | Lisp_Object *window; | |
341f3858 KS |
1009 | int *x, *y; |
1010 | enum window_part *part; | |
f95464e4 | 1011 | }; |
67492200 GM |
1012 | |
1013 | static int | |
f95464e4 | 1014 | check_window_containing (w, user_data) |
67492200 | 1015 | struct window *w; |
f95464e4 | 1016 | void *user_data; |
67492200 | 1017 | { |
f95464e4 | 1018 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1019 | enum window_part found; |
1020 | int continue_p = 1; | |
67492200 | 1021 | |
f95464e4 | 1022 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1023 | if (found != ON_NOTHING) |
67492200 | 1024 | { |
341f3858 | 1025 | *cw->part = found; |
f95464e4 | 1026 | XSETWINDOW (*cw->window, w); |
7442878f | 1027 | continue_p = 0; |
67492200 | 1028 | } |
177c0ea7 | 1029 | |
7442878f | 1030 | return continue_p; |
67492200 GM |
1031 | } |
1032 | ||
1033 | ||
5500c422 | 1034 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1035 | return it as a Lisp_Object. |
1036 | ||
1037 | If X, Y is on one of the window's special `window_part' elements, | |
1038 | set *PART to the id of that element, and return X and Y converted | |
1039 | to window relative coordinates in WX and WY. | |
1040 | ||
341f3858 | 1041 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1042 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1043 | ||
1044 | This function was previously implemented with a loop cycling over | |
1045 | windows with Fnext_window, and starting with the frame's selected | |
1046 | window. It turned out that this doesn't work with an | |
1047 | implementation of next_window using Vwindow_list, because | |
1048 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1049 | tree of F when this function is called asynchronously from | |
1050 | note_mouse_highlight. The original loop didn't terminate in this | |
1051 | case. */ | |
5500c422 | 1052 | |
7ab12479 | 1053 | Lisp_Object |
949cf20f | 1054 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1055 | struct frame *f; |
7ab12479 | 1056 | int x, y; |
341f3858 | 1057 | enum window_part *part; |
949cf20f | 1058 | int *wx, *wy; |
9ea173e8 | 1059 | int tool_bar_p; |
7ab12479 | 1060 | { |
67492200 | 1061 | Lisp_Object window; |
f95464e4 | 1062 | struct check_window_data cw; |
341f3858 KS |
1063 | enum window_part dummy; |
1064 | ||
1065 | if (part == 0) | |
1066 | part = &dummy; | |
5500c422 | 1067 | |
67492200 | 1068 | window = Qnil; |
f95464e4 GM |
1069 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1070 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1071 | |
67492200 GM |
1072 | /* If not found above, see if it's in the tool bar window, if a tool |
1073 | bar exists. */ | |
1074 | if (NILP (window) | |
1075 | && tool_bar_p | |
1076 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1077 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1078 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1079 | != ON_NOTHING)) | |
5500c422 | 1080 | { |
341f3858 | 1081 | *part = ON_TEXT; |
67492200 | 1082 | window = f->tool_bar_window; |
5500c422 | 1083 | } |
37962e60 | 1084 | |
949cf20f KS |
1085 | if (wx) *wx = x; |
1086 | if (wy) *wy = y; | |
1087 | ||
67492200 | 1088 | return window; |
7ab12479 JB |
1089 | } |
1090 | ||
ab17c3f2 | 1091 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1092 | doc: /* Return window containing coordinates X and Y on FRAME. |
1093 | If omitted, FRAME defaults to the currently selected frame. | |
1094 | The top left corner of the frame is considered to be row 0, | |
1095 | column 0. */) | |
1096 | (x, y, frame) | |
1097 | Lisp_Object x, y, frame; | |
7ab12479 | 1098 | { |
5500c422 | 1099 | struct frame *f; |
7ab12479 | 1100 | |
44fa5b1e | 1101 | if (NILP (frame)) |
1ae1a37d | 1102 | frame = selected_frame; |
b7826503 | 1103 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1104 | f = XFRAME (frame); |
7ab12479 | 1105 | |
5500c422 | 1106 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1107 | CHECK_NUMBER_OR_FLOAT (x); |
1108 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1109 | |
177c0ea7 | 1110 | return window_from_coordinates (f, |
2c77cf3b RS |
1111 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1112 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1113 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1114 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1115 | 0, 0, 0, 0); |
7ab12479 JB |
1116 | } |
1117 | ||
1118 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1119 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1120 | WINDOW defaults to the selected window. |
1121 | ||
fdb82f93 PJ |
1122 | For a nonselected window, this is the value point would have |
1123 | if that window were selected. | |
1124 | ||
1125 | Note that, when WINDOW is the selected window and its buffer | |
1126 | is also currently selected, the value returned is the same as (point). | |
1127 | It would be more strictly correct to return the `top-level' value | |
1128 | of point, outside of any save-excursion forms. | |
1129 | But that is hard to define. */) | |
1130 | (window) | |
7ab12479 JB |
1131 | Lisp_Object window; |
1132 | { | |
1133 | register struct window *w = decode_window (window); | |
1134 | ||
1135 | if (w == XWINDOW (selected_window) | |
1136 | && current_buffer == XBUFFER (w->buffer)) | |
1137 | return Fpoint (); | |
1138 | return Fmarker_position (w->pointm); | |
1139 | } | |
1140 | ||
1141 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1142 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1143 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1144 | This is updated by redisplay or by calling `set-window-start'. */) |
1145 | (window) | |
7ab12479 JB |
1146 | Lisp_Object window; |
1147 | { | |
1148 | return Fmarker_position (decode_window (window)->start); | |
1149 | } | |
1150 | ||
8646118f RS |
1151 | /* This is text temporarily removed from the doc string below. |
1152 | ||
fdb82f93 PJ |
1153 | This function returns nil if the position is not currently known. |
1154 | That happens when redisplay is preempted and doesn't finish. | |
1155 | If in that case you want to compute where the end of the window would | |
1156 | have been if redisplay had finished, do this: | |
1157 | (save-excursion | |
1158 | (goto-char (window-start window)) | |
1159 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1160 | (point))") */ |
1161 | ||
478292ed | 1162 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1163 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1164 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1165 | This is updated by redisplay, when it runs to completion. |
1166 | Simply changing the buffer text or setting `window-start' | |
1167 | does not update this value. | |
a0a37a6f LT |
1168 | Return nil if there is no recorded value. \(This can happen if the |
1169 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1170 | If UPDATE is non-nil, compute the up-to-date position |
1171 | if it isn't already recorded. */) | |
1172 | (window, update) | |
478292ed | 1173 | Lisp_Object window, update; |
7ab12479 JB |
1174 | { |
1175 | Lisp_Object value; | |
1176 | struct window *w = decode_window (window); | |
5a41ab94 | 1177 | Lisp_Object buf; |
31790df3 | 1178 | struct buffer *b; |
5a41ab94 RS |
1179 | |
1180 | buf = w->buffer; | |
b7826503 | 1181 | CHECK_BUFFER (buf); |
b3a10345 | 1182 | b = XBUFFER (buf); |
5a41ab94 | 1183 | |
8646118f | 1184 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1185 | /* If we don't know the end position, return nil. |
1186 | The user can compute it with vertical-motion if he wants to. | |
1187 | It would be nicer to do it automatically, | |
1188 | but that's so slow that it would probably bother people. */ | |
1189 | if (NILP (w->window_end_valid)) | |
1190 | return Qnil; | |
8646118f | 1191 | #endif |
7250968e | 1192 | |
478292ed RS |
1193 | if (! NILP (update) |
1194 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1195 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1196 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1197 | && !noninteractive) |
478292ed | 1198 | { |
cbc099e5 GM |
1199 | struct text_pos startp; |
1200 | struct it it; | |
b3a10345 KS |
1201 | struct buffer *old_buffer = NULL; |
1202 | ||
1203 | /* Cannot use Fvertical_motion because that function doesn't | |
1204 | cope with variable-height lines. */ | |
1205 | if (b != current_buffer) | |
1206 | { | |
1207 | old_buffer = current_buffer; | |
1208 | set_buffer_internal (b); | |
1209 | } | |
2d6d9df0 GM |
1210 | |
1211 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1212 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1213 | `-l' containing a call to `rmail' with subsequent other |
1214 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1215 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1216 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1217 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1218 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1219 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1220 | else |
cbc099e5 GM |
1221 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1222 | ||
cbc099e5 GM |
1223 | start_display (&it, w, startp); |
1224 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1225 | if (it.current_y < it.last_visible_y) |
1226 | move_it_past_eol (&it); | |
cbc099e5 | 1227 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1228 | |
99593a9d GM |
1229 | if (old_buffer) |
1230 | set_buffer_internal (old_buffer); | |
478292ed RS |
1231 | } |
1232 | else | |
b3a10345 | 1233 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1234 | |
1235 | return value; | |
1236 | } | |
1237 | ||
1238 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1239 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1240 | Return POS. */) | |
fdb82f93 | 1241 | (window, pos) |
7ab12479 JB |
1242 | Lisp_Object window, pos; |
1243 | { | |
1244 | register struct window *w = decode_window (window); | |
1245 | ||
b7826503 | 1246 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1247 | if (w == XWINDOW (selected_window) |
1248 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1249 | Fgoto_char (pos); |
1250 | else | |
1251 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1252 | |
0685cb3c GM |
1253 | /* We have to make sure that redisplay updates the window to show |
1254 | the new value of point. */ | |
1255 | if (!EQ (window, selected_window)) | |
799417bd | 1256 | ++windows_or_buffers_changed; |
177c0ea7 | 1257 | |
7ab12479 JB |
1258 | return pos; |
1259 | } | |
1260 | ||
1261 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1262 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1263 | WINDOW defaults to the selected window. Return POS. |
1264 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1265 | overriding motion of point in order to display at this exact start. */) | |
fdb82f93 | 1266 | (window, pos, noforce) |
7ab12479 JB |
1267 | Lisp_Object window, pos, noforce; |
1268 | { | |
1269 | register struct window *w = decode_window (window); | |
1270 | ||
b7826503 | 1271 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1272 | set_marker_restricted (w->start, pos, w->buffer); |
1273 | /* this is not right, but much easier than doing what is right. */ | |
1274 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1275 | if (NILP (noforce)) |
7ab12479 JB |
1276 | w->force_start = Qt; |
1277 | w->update_mode_line = Qt; | |
d834a2e9 | 1278 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1279 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1280 | if (!EQ (window, selected_window)) |
1281 | windows_or_buffers_changed++; | |
ce7fae7d | 1282 | |
7ab12479 JB |
1283 | return pos; |
1284 | } | |
1285 | ||
d653c8cc | 1286 | |
7ab12479 | 1287 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1288 | 0, 1, 0, |
1289 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1290 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1291 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1292 | never called with WINDOW as its argument, or the value set by that | |
1293 | function was internally reset since its last call. WINDOW defaults to | |
1294 | the selected window. | |
1295 | ||
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 frame. | |
1301 | ||
1302 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1303 | window, unless that window is "strongly" dedicated to its buffer, that | |
1304 | is the value returned by `window-dedicated-p' is t. */) | |
fdb82f93 | 1305 | (window) |
7ab12479 JB |
1306 | Lisp_Object window; |
1307 | { | |
1308 | return decode_window (window)->dedicated; | |
1309 | } | |
1310 | ||
d207b766 RS |
1311 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1312 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1313 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1314 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1315 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1316 | Return FLAG. |
1317 | ||
7bfac547 MR |
1318 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1319 | from displaying another buffer in it. `get-lru-window' and | |
1320 | `get-largest-window' treat dedicated windows specially. | |
1321 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1322 | `kill-buffer' can delete a dedicated window and the containing | |
1323 | frame. | |
1324 | ||
1325 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1326 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1327 | displayed by a window, unless that window is strongly dedicated to its | |
1328 | buffer. If and when `set-window-buffer' displays another buffer in a | |
1329 | window, it also makes sure that the window is not marked as dedicated. */) | |
d653c8cc MR |
1330 | (window, flag) |
1331 | Lisp_Object window, flag; | |
7ab12479 JB |
1332 | { |
1333 | register struct window *w = decode_window (window); | |
1334 | ||
d653c8cc | 1335 | w->dedicated = flag; |
7ab12479 JB |
1336 | return w->dedicated; |
1337 | } | |
1338 | ||
d653c8cc | 1339 | |
cfbb2395 JB |
1340 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1341 | 0, 1, 0, | |
d653c8cc MR |
1342 | doc: /* Return the parameters of WINDOW and their values. |
1343 | WINDOW defaults to the selected window. The return value is a list of | |
1344 | elements of the form (PARAMETER . VALUE). */) | |
cfbb2395 JB |
1345 | (window) |
1346 | Lisp_Object window; | |
1347 | { | |
927abf37 | 1348 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1349 | } |
1350 | ||
1351 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1352 | 2, 2, 0, | |
d653c8cc MR |
1353 | doc: /* Return WINDOW's value for PARAMETER. |
1354 | WINDOW defaults to the selected window. */) | |
cfbb2395 JB |
1355 | (window, parameter) |
1356 | Lisp_Object window, parameter; | |
1357 | { | |
927abf37 JB |
1358 | Lisp_Object result; |
1359 | ||
1360 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1361 | return CDR_SAFE (result); | |
cfbb2395 JB |
1362 | } |
1363 | ||
cfbb2395 JB |
1364 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1365 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1366 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1367 | WINDOW defaults to the selected window. Return VALUE. */) | |
cfbb2395 JB |
1368 | (window, parameter, value) |
1369 | Lisp_Object window, parameter, value; | |
1370 | { | |
1371 | register struct window *w = decode_window (window); | |
1372 | Lisp_Object old_alist_elt; | |
1373 | ||
1374 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1375 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1376 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1377 | else | |
1378 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1379 | return value; |
cfbb2395 JB |
1380 | } |
1381 | ||
1382 | ||
7ab12479 JB |
1383 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1384 | 0, 1, 0, | |
c85322d0 EZ |
1385 | doc: /* Return the display-table that WINDOW is using. |
1386 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1387 | (window) |
7ab12479 JB |
1388 | Lisp_Object window; |
1389 | { | |
1390 | return decode_window (window)->display_table; | |
1391 | } | |
1392 | ||
5500c422 GM |
1393 | /* Get the display table for use on window W. This is either W's |
1394 | display table or W's buffer's display table. Ignore the specified | |
1395 | tables if they are not valid; if no valid table is specified, | |
1396 | return 0. */ | |
7ab12479 | 1397 | |
319315f1 | 1398 | struct Lisp_Char_Table * |
7ab12479 JB |
1399 | window_display_table (w) |
1400 | struct window *w; | |
1401 | { | |
c756cdbe GM |
1402 | struct Lisp_Char_Table *dp = NULL; |
1403 | ||
1404 | if (DISP_TABLE_P (w->display_table)) | |
1405 | dp = XCHAR_TABLE (w->display_table); | |
1406 | else if (BUFFERP (w->buffer)) | |
1407 | { | |
1408 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1409 | |
c756cdbe GM |
1410 | if (DISP_TABLE_P (b->display_table)) |
1411 | dp = XCHAR_TABLE (b->display_table); | |
1412 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1413 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1414 | } | |
171d003c | 1415 | |
c756cdbe | 1416 | return dp; |
7ab12479 JB |
1417 | } |
1418 | ||
3a2712f9 | 1419 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1420 | doc: /* Set WINDOW's display-table to TABLE. */) |
1421 | (window, table) | |
7ab12479 JB |
1422 | register Lisp_Object window, table; |
1423 | { | |
1424 | register struct window *w; | |
7ab12479 JB |
1425 | |
1426 | w = decode_window (window); | |
1427 | w->display_table = table; | |
1428 | return table; | |
1429 | } | |
1430 | \f | |
1431 | /* Record info on buffer window w is displaying | |
1432 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1433 | static void |
7ab12479 JB |
1434 | unshow_buffer (w) |
1435 | register struct window *w; | |
1436 | { | |
12cae7c0 | 1437 | Lisp_Object buf; |
b73ea88e | 1438 | struct buffer *b; |
7ab12479 | 1439 | |
12cae7c0 | 1440 | buf = w->buffer; |
b73ea88e RS |
1441 | b = XBUFFER (buf); |
1442 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1443 | abort (); |
1444 | ||
573f41ab | 1445 | #if 0 |
7ab12479 JB |
1446 | if (w == XWINDOW (selected_window) |
1447 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1448 | /* Do this except when the selected window's buffer | |
1449 | is being removed from some other window. */ | |
573f41ab RS |
1450 | #endif |
1451 | /* last_window_start records the start position that this buffer | |
1452 | had in the last window to be disconnected from it. | |
1453 | Now that this statement is unconditional, | |
1454 | it is possible for the buffer to be displayed in the | |
1455 | selected window, while last_window_start reflects another | |
1456 | window which was recently showing the same buffer. | |
1457 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1458 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1459 | |
1460 | /* Point in the selected window's buffer | |
1461 | is actually stored in that buffer, and the window's pointm isn't used. | |
1462 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1463 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1464 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1465 | && !(WINDOWP (b->last_selected_window) |
1466 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1467 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1468 | temp_set_point_both (b, |
1469 | clip_to_bounds (BUF_BEGV (b), | |
1470 | XMARKER (w->pointm)->charpos, | |
1471 | BUF_ZV (b)), | |
1472 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1473 | marker_byte_position (w->pointm), | |
1474 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1475 | |
8801a864 KR |
1476 | if (WINDOWP (b->last_selected_window) |
1477 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1478 | b->last_selected_window = Qnil; |
7ab12479 JB |
1479 | } |
1480 | ||
1481 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1482 | static void |
7ab12479 JB |
1483 | replace_window (old, replacement) |
1484 | Lisp_Object old, replacement; | |
1485 | { | |
1486 | register Lisp_Object tem; | |
1487 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1488 | ||
44fa5b1e JB |
1489 | /* If OLD is its frame's root_window, then replacement is the new |
1490 | root_window for that frame. */ | |
7ab12479 | 1491 | |
7f4161e0 | 1492 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1493 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1494 | |
949cf20f KS |
1495 | p->left_col = o->left_col; |
1496 | p->top_line = o->top_line; | |
1497 | p->total_cols = o->total_cols; | |
1498 | p->total_lines = o->total_lines; | |
5500c422 GM |
1499 | p->desired_matrix = p->current_matrix = 0; |
1500 | p->vscroll = 0; | |
1501 | bzero (&p->cursor, sizeof (p->cursor)); | |
1502 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1503 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1504 | p->phys_cursor_type = -1; | |
4b26579e | 1505 | p->phys_cursor_width = -1; |
5500c422 GM |
1506 | p->must_be_updated_p = 0; |
1507 | p->pseudo_window_p = 0; | |
1508 | XSETFASTINT (p->window_end_vpos, 0); | |
1509 | XSETFASTINT (p->window_end_pos, 0); | |
1510 | p->window_end_valid = Qnil; | |
7bbb5782 | 1511 | p->frozen_window_start_p = 0; |
949cf20f | 1512 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1513 | |
1514 | p->next = tem = o->next; | |
265a9e55 | 1515 | if (!NILP (tem)) |
7ab12479 JB |
1516 | XWINDOW (tem)->prev = replacement; |
1517 | ||
1518 | p->prev = tem = o->prev; | |
265a9e55 | 1519 | if (!NILP (tem)) |
7ab12479 JB |
1520 | XWINDOW (tem)->next = replacement; |
1521 | ||
1522 | p->parent = tem = o->parent; | |
265a9e55 | 1523 | if (!NILP (tem)) |
7ab12479 JB |
1524 | { |
1525 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1526 | XWINDOW (tem)->vchild = replacement; | |
1527 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1528 | XWINDOW (tem)->hchild = replacement; | |
1529 | } | |
1530 | ||
1531 | /*** Here, if replacement is a vertical combination | |
1532 | and so is its new parent, we should make replacement's | |
1533 | children be children of that parent instead. ***/ | |
1534 | } | |
1535 | ||
1536 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
8fef9de1 MR |
1537 | doc: /* Remove WINDOW from its frame. |
1538 | WINDOW defaults to the selected window. Return nil. | |
1539 | Signal an error when WINDOW is the only window on its frame. */) | |
fdb82f93 | 1540 | (window) |
7ab12479 | 1541 | register Lisp_Object window; |
543f5fb1 | 1542 | { |
eeca6f6f SM |
1543 | struct frame *f; |
1544 | if (NILP (window)) | |
1545 | window = selected_window; | |
dbf64827 JB |
1546 | else |
1547 | CHECK_LIVE_WINDOW (window); | |
1548 | ||
eeca6f6f | 1549 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
543f5fb1 RS |
1550 | delete_window (window); |
1551 | ||
eeca6f6f | 1552 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1553 | |
1554 | return Qnil; | |
1555 | } | |
1556 | ||
5e14b1fc | 1557 | void |
543f5fb1 RS |
1558 | delete_window (window) |
1559 | register Lisp_Object window; | |
7ab12479 JB |
1560 | { |
1561 | register Lisp_Object tem, parent, sib; | |
1562 | register struct window *p; | |
1563 | register struct window *par; | |
951f9df5 | 1564 | struct frame *f; |
7ab12479 | 1565 | |
605be8af JB |
1566 | /* Because this function is called by other C code on non-leaf |
1567 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1568 | so we can't decode_window here. */ | |
eeca6f6f | 1569 | CHECK_WINDOW (window); |
7ab12479 | 1570 | p = XWINDOW (window); |
605be8af | 1571 | |
0d384044 | 1572 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1573 | if (NILP (p->buffer) |
1574 | && NILP (p->hchild) | |
1575 | && NILP (p->vchild)) | |
296b535c | 1576 | return; |
605be8af | 1577 | |
7ab12479 | 1578 | parent = p->parent; |
265a9e55 | 1579 | if (NILP (parent)) |
7ab12479 JB |
1580 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1581 | par = XWINDOW (parent); | |
1582 | ||
1583 | windows_or_buffers_changed++; | |
67492200 | 1584 | Vwindow_list = Qnil; |
951f9df5 GM |
1585 | f = XFRAME (WINDOW_FRAME (p)); |
1586 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1587 | |
605be8af JB |
1588 | /* Are we trying to delete any frame's selected window? */ |
1589 | { | |
192c3131 | 1590 | Lisp_Object swindow, pwindow; |
605be8af | 1591 | |
0def0403 RS |
1592 | /* See if the frame's selected window is either WINDOW |
1593 | or any subwindow of it, by finding all that window's parents | |
1594 | and comparing each one with WINDOW. */ | |
192c3131 | 1595 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1596 | |
192c3131 | 1597 | while (1) |
0def0403 | 1598 | { |
192c3131 RS |
1599 | pwindow = swindow; |
1600 | while (!NILP (pwindow)) | |
1601 | { | |
1602 | if (EQ (window, pwindow)) | |
1603 | break; | |
1604 | pwindow = XWINDOW (pwindow)->parent; | |
1605 | } | |
1606 | ||
1607 | /* If the window being deleted is not a parent of SWINDOW, | |
1608 | then SWINDOW is ok as the new selected window. */ | |
1609 | if (!EQ (window, pwindow)) | |
0def0403 | 1610 | break; |
192c3131 | 1611 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1612 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1613 | |
1614 | /* If we get back to the frame's selected window, | |
1615 | it means there was no acceptable alternative, | |
1616 | so we cannot delete. */ | |
1617 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1618 | error ("Cannot delete window"); | |
0def0403 RS |
1619 | } |
1620 | ||
192c3131 RS |
1621 | /* If we need to change SWINDOW, do it. */ |
1622 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1623 | { |
605be8af JB |
1624 | /* If we're about to delete the selected window on the |
1625 | selected frame, then we should use Fselect_window to select | |
1626 | the new window. On the other hand, if we're about to | |
1627 | delete the selected window on any other frame, we shouldn't do | |
1628 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1629 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1630 | Fselect_window (swindow, Qnil); |
605be8af | 1631 | else |
192c3131 | 1632 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1633 | } |
1634 | } | |
7ab12479 | 1635 | |
0d384044 RS |
1636 | /* Now we know we can delete this one. */ |
1637 | window_deletion_count++; | |
1638 | ||
7ab12479 JB |
1639 | tem = p->buffer; |
1640 | /* tem is null for dummy parent windows | |
1641 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1642 | if (!NILP (tem)) |
7ab12479 JB |
1643 | { |
1644 | unshow_buffer (p); | |
2d0834cc SM |
1645 | unchain_marker (XMARKER (p->pointm)); |
1646 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1647 | } |
1648 | ||
05e71564 GM |
1649 | /* Free window glyph matrices. It is sure that they are allocated |
1650 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1651 | events and other events that access glyph matrices are not | |
1652 | processed while we are changing them. */ | |
1653 | BLOCK_INPUT; | |
951f9df5 | 1654 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1655 | |
7ab12479 | 1656 | tem = p->next; |
265a9e55 | 1657 | if (!NILP (tem)) |
7ab12479 JB |
1658 | XWINDOW (tem)->prev = p->prev; |
1659 | ||
1660 | tem = p->prev; | |
265a9e55 | 1661 | if (!NILP (tem)) |
7ab12479 JB |
1662 | XWINDOW (tem)->next = p->next; |
1663 | ||
1664 | if (EQ (window, par->hchild)) | |
1665 | par->hchild = p->next; | |
1666 | if (EQ (window, par->vchild)) | |
1667 | par->vchild = p->next; | |
1668 | ||
1669 | /* Find one of our siblings to give our space to. */ | |
1670 | sib = p->prev; | |
265a9e55 | 1671 | if (NILP (sib)) |
7ab12479 JB |
1672 | { |
1673 | /* If p gives its space to its next sibling, that sibling needs | |
1674 | to have its top/left side pulled back to where p's is. | |
1675 | set_window_{height,width} will re-position the sibling's | |
1676 | children. */ | |
1677 | sib = p->next; | |
949cf20f KS |
1678 | XWINDOW (sib)->top_line = p->top_line; |
1679 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1680 | } |
1681 | ||
1682 | /* Stretch that sibling. */ | |
265a9e55 | 1683 | if (!NILP (par->vchild)) |
7ab12479 | 1684 | set_window_height (sib, |
949cf20f | 1685 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1686 | 1); |
265a9e55 | 1687 | if (!NILP (par->hchild)) |
7ab12479 | 1688 | set_window_width (sib, |
949cf20f | 1689 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1690 | 1); |
1691 | ||
1692 | /* If parent now has only one child, | |
1693 | put the child into the parent's place. */ | |
7ab12479 | 1694 | tem = par->hchild; |
265a9e55 | 1695 | if (NILP (tem)) |
7ab12479 | 1696 | tem = par->vchild; |
5494d7bc | 1697 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1698 | replace_window (parent, tem); |
5494d7bc JD |
1699 | par = XWINDOW (tem); |
1700 | } | |
605be8af JB |
1701 | |
1702 | /* Since we may be deleting combination windows, we must make sure that | |
1703 | not only p but all its children have been marked as deleted. */ | |
1704 | if (! NILP (p->hchild)) | |
1705 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1706 | else if (! NILP (p->vchild)) | |
1707 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1708 | ||
1709 | /* Mark this window as deleted. */ | |
1710 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1711 | |
5494d7bc JD |
1712 | if (! NILP (par->parent)) |
1713 | par = XWINDOW (par->parent); | |
1714 | ||
1715 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1716 | one of them. */ | |
ae12ecd7 | 1717 | |
5494d7bc JD |
1718 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1719 | { | |
1720 | p = XWINDOW (par->vchild); | |
1721 | par->vchild = p->vchild; | |
1722 | tem = p->vchild; | |
1723 | } | |
1724 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1725 | { | |
1726 | p = XWINDOW (par->hchild); | |
1727 | par->hchild = p->hchild; | |
1728 | tem = p->hchild; | |
1729 | } | |
1730 | else | |
1731 | p = 0; | |
1732 | ||
1733 | if (p) | |
1734 | { | |
1735 | while (! NILP (tem)) { | |
1736 | XWINDOW (tem)->parent = p->parent; | |
1737 | if (NILP (XWINDOW (tem)->next)) | |
1738 | break; | |
1739 | tem = XWINDOW (tem)->next; | |
1740 | } | |
1741 | if (! NILP (tem)) { | |
1742 | /* The next of the v/hchild we are removing is now the next of the | |
1743 | last child for the v/hchild: | |
1744 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1745 | | | |
1746 | -> next3 | |
1747 | After: v/hchild -> next1 -> next2 -> next3 | |
1748 | */ | |
1749 | XWINDOW (tem)->next = p->next; | |
1750 | if (! NILP (p->next)) | |
1751 | XWINDOW (p->next)->prev = tem; | |
1752 | } | |
1753 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1754 | } | |
1755 | ||
1756 | ||
5500c422 | 1757 | /* Adjust glyph matrices. */ |
951f9df5 | 1758 | adjust_glyphs (f); |
05e71564 | 1759 | UNBLOCK_INPUT; |
7ab12479 | 1760 | } |
67492200 GM |
1761 | |
1762 | ||
7ab12479 | 1763 | \f |
67492200 GM |
1764 | /*********************************************************************** |
1765 | Window List | |
1766 | ***********************************************************************/ | |
1767 | ||
f95464e4 GM |
1768 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1769 | pointer. This is a callback function for foreach_window, used in | |
1770 | function window_list. */ | |
67492200 GM |
1771 | |
1772 | static int | |
f95464e4 | 1773 | add_window_to_list (w, user_data) |
67492200 | 1774 | struct window *w; |
f95464e4 | 1775 | void *user_data; |
67492200 | 1776 | { |
f95464e4 | 1777 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1778 | Lisp_Object window; |
1779 | XSETWINDOW (window, w); | |
212116d6 | 1780 | *list = Fcons (window, *list); |
67492200 GM |
1781 | return 1; |
1782 | } | |
1783 | ||
1784 | ||
1785 | /* Return a list of all windows, for use by next_window. If | |
1786 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1787 | list, cache it in Vwindow_list, and return that. */ | |
1788 | ||
1789 | static Lisp_Object | |
1790 | window_list () | |
1791 | { | |
1792 | if (!CONSP (Vwindow_list)) | |
1793 | { | |
1794 | Lisp_Object tail; | |
212116d6 | 1795 | |
67492200 GM |
1796 | Vwindow_list = Qnil; |
1797 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1798 | { |
1799 | Lisp_Object args[2]; | |
1800 | ||
1801 | /* We are visiting windows in canonical order, and add | |
1802 | new windows at the front of args[1], which means we | |
1803 | have to reverse this list at the end. */ | |
1804 | args[1] = Qnil; | |
1805 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1806 | args[0] = Vwindow_list; | |
1807 | args[1] = Fnreverse (args[1]); | |
1808 | Vwindow_list = Fnconc (2, args); | |
1809 | } | |
67492200 | 1810 | } |
177c0ea7 | 1811 | |
67492200 GM |
1812 | return Vwindow_list; |
1813 | } | |
1814 | ||
1815 | ||
118ea242 GM |
1816 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1817 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1818 | |
118ea242 GM |
1819 | MINIBUF t means WINDOW may be minibuffer windows. |
1820 | `lambda' means WINDOW may not be a minibuffer window. | |
1821 | a window means a specific minibuffer window | |
67492200 | 1822 | |
118ea242 GM |
1823 | ALL_FRAMES t means search all frames, |
1824 | nil means search just current frame, | |
1825 | `visible' means search just visible frames, | |
1826 | 0 means search visible and iconified frames, | |
1827 | a window means search the frame that window belongs to, | |
1828 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1829 | |
1830 | static int | |
118ea242 GM |
1831 | candidate_window_p (window, owindow, minibuf, all_frames) |
1832 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1833 | { |
1834 | struct window *w = XWINDOW (window); | |
1835 | struct frame *f = XFRAME (w->frame); | |
1836 | int candidate_p = 1; | |
1837 | ||
1838 | if (!BUFFERP (w->buffer)) | |
1839 | candidate_p = 0; | |
1840 | else if (MINI_WINDOW_P (w) | |
1841 | && (EQ (minibuf, Qlambda) | |
1842 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1843 | { | |
1844 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1845 | If it is a window, consider only that one. */ | |
1846 | candidate_p = 0; | |
1847 | } | |
118ea242 GM |
1848 | else if (EQ (all_frames, Qt)) |
1849 | candidate_p = 1; | |
67492200 | 1850 | else if (NILP (all_frames)) |
118ea242 GM |
1851 | { |
1852 | xassert (WINDOWP (owindow)); | |
1853 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1854 | } | |
67492200 GM |
1855 | else if (EQ (all_frames, Qvisible)) |
1856 | { | |
1857 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1858 | candidate_p = FRAME_VISIBLE_P (f) |
1859 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1860 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1861 | ||
67492200 GM |
1862 | } |
1863 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1864 | { | |
1865 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1866 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1867 | #ifdef HAVE_X_WINDOWS | |
1868 | /* Yuck!! If we've just created the frame and the | |
1869 | window-manager requested the user to place it | |
1870 | manually, the window may still not be considered | |
1871 | `visible'. I'd argue it should be at least | |
1872 | something like `iconified', but don't know how to do | |
1873 | that yet. --Stef */ | |
1874 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1875 | && !f->output_data.x->has_been_visible) | |
1876 | #endif | |
de509a60 SM |
1877 | ) |
1878 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1879 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1880 | } |
67492200 GM |
1881 | else if (WINDOWP (all_frames)) |
1882 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1883 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1884 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1885 | else if (FRAMEP (all_frames)) |
1886 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1887 | |
1888 | return candidate_p; | |
1889 | } | |
1890 | ||
1891 | ||
1892 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1893 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1894 | ALL_FRAMES. */ | |
1895 | ||
1896 | static void | |
1897 | decode_next_window_args (window, minibuf, all_frames) | |
1898 | Lisp_Object *window, *minibuf, *all_frames; | |
1899 | { | |
1900 | if (NILP (*window)) | |
1901 | *window = selected_window; | |
1902 | else | |
b7826503 | 1903 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1904 | |
67492200 GM |
1905 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1906 | does. */ | |
1907 | if (NILP (*minibuf)) | |
1908 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1909 | else if (!EQ (*minibuf, Qt)) | |
1910 | *minibuf = Qlambda; | |
177c0ea7 | 1911 | |
67492200 GM |
1912 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1913 | => count none of them, or a specific minibuffer window (the | |
1914 | active one) to count. */ | |
1915 | ||
1916 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1917 | if (NILP (*all_frames)) | |
1918 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1919 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1920 | : Qnil); | |
1921 | else if (EQ (*all_frames, Qvisible)) | |
1922 | ; | |
0f8fe9a2 | 1923 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1924 | ; |
1925 | else if (FRAMEP (*all_frames)) | |
1926 | ; | |
1927 | else if (!EQ (*all_frames, Qt)) | |
1928 | *all_frames = Qnil; | |
177c0ea7 | 1929 | |
67492200 GM |
1930 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1931 | search just current frame, `visible' meaning search just visible | |
1932 | frames, 0 meaning search visible and iconified frames, or a | |
1933 | window, meaning search the frame that window belongs to, or a | |
1934 | frame, meaning consider windows on that frame, only. */ | |
1935 | } | |
1936 | ||
1937 | ||
ab6d1131 | 1938 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
1939 | of windows. NEXT_P non-zero means return the next window. See the |
1940 | documentation string of next-window for the meaning of MINIBUF and | |
1941 | ALL_FRAMES. */ | |
1942 | ||
1943 | static Lisp_Object | |
1944 | next_window (window, minibuf, all_frames, next_p) | |
1945 | Lisp_Object window, minibuf, all_frames; | |
1946 | int next_p; | |
1947 | { | |
1948 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1949 | |
67492200 GM |
1950 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1951 | return the first window on the frame. */ | |
1952 | if (FRAMEP (all_frames) | |
1953 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1954 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1955 | |
212116d6 | 1956 | if (next_p) |
67492200 GM |
1957 | { |
1958 | Lisp_Object list; | |
177c0ea7 | 1959 | |
67492200 GM |
1960 | /* Find WINDOW in the list of all windows. */ |
1961 | list = Fmemq (window, window_list ()); | |
1962 | ||
1963 | /* Scan forward from WINDOW to the end of the window list. */ | |
1964 | if (CONSP (list)) | |
1965 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1966 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1967 | break; |
1968 | ||
1969 | /* Scan from the start of the window list up to WINDOW. */ | |
1970 | if (!CONSP (list)) | |
1971 | for (list = Vwindow_list; | |
1972 | CONSP (list) && !EQ (XCAR (list), window); | |
1973 | list = XCDR (list)) | |
118ea242 | 1974 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1975 | break; |
1976 | ||
1977 | if (CONSP (list)) | |
1978 | window = XCAR (list); | |
1979 | } | |
1980 | else | |
1981 | { | |
1982 | Lisp_Object candidate, list; | |
177c0ea7 | 1983 | |
67492200 GM |
1984 | /* Scan through the list of windows for candidates. If there are |
1985 | candidate windows in front of WINDOW, the last one of these | |
1986 | is the one we want. If there are candidates following WINDOW | |
1987 | in the list, again the last one of these is the one we want. */ | |
1988 | candidate = Qnil; | |
1989 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1990 | { | |
1991 | if (EQ (XCAR (list), window)) | |
1992 | { | |
1993 | if (WINDOWP (candidate)) | |
1994 | break; | |
1995 | } | |
118ea242 GM |
1996 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1997 | all_frames)) | |
67492200 GM |
1998 | candidate = XCAR (list); |
1999 | } | |
2000 | ||
2001 | if (WINDOWP (candidate)) | |
2002 | window = candidate; | |
2003 | } | |
2004 | ||
2005 | return window; | |
2006 | } | |
7ab12479 | 2007 | |
7ab12479 | 2008 | |
26f6279d | 2009 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
2010 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
2011 | WINDOW defaults to the selected window. The optional arguments | |
2012 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 2013 | |
ab6d1131 MR |
2014 | MINIBUF t means consider the minibuffer window even if the |
2015 | minibuffer is not active. MINIBUF nil or omitted means consider | |
2016 | the minibuffer window only if the minibuffer is active. Any | |
2017 | other value means do not consider the minibuffer window even if | |
2018 | the minibuffer is active. | |
fdb82f93 PJ |
2019 | |
2020 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
2021 | is active, all windows on all frames that share that minibuffer |
2022 | are considered too. Therefore, if you are using a separate | |
2023 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
2024 | counts, `next-window' considers the windows in the frame from | |
2025 | which you entered the minibuffer, as well as the minibuffer | |
2026 | window. | |
2027 | ||
2028 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
2029 | frame, plus the minibuffer window if specified by the MINIBUF | |
2030 | argument, see above. If the minibuffer counts, consider all | |
2031 | windows on all frames that share that minibuffer too. | |
2032 | ALL-FRAMES t means consider all windows on all existing frames. | |
2033 | ALL-FRAMES `visible' means consider all windows on all visible | |
2034 | frames. | |
2035 | ALL-FRAMES 0 means consider all windows on all visible and | |
2036 | iconified frames. | |
2037 | ALL-FRAMES a frame means consider all windows on that frame only. | |
2038 | Anything else means consider all windows on WINDOW's frame and no | |
2039 | others. | |
fdb82f93 PJ |
2040 | |
2041 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2042 | `next-window' to iterate through the entire cycle of acceptable | |
2043 | windows, eventually ending up back at the window you started with. | |
2044 | `previous-window' traverses the same cycle, in the reverse order. */) | |
2045 | (window, minibuf, all_frames) | |
67492200 | 2046 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2047 | { |
67492200 | 2048 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2049 | } |
2050 | ||
67492200 | 2051 | |
26f6279d | 2052 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
2053 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
2054 | WINDOW defaults to the selected window. The optional arguments | |
2055 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
2056 | For the precise meaning of these arguments see `next-window'. | |
2057 | ||
2058 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2059 | use `previous-window' to iterate through the entire cycle of | |
2060 | acceptable windows, eventually ending up back at the window you | |
2061 | started with. `next-window' traverses the same cycle, in the | |
2062 | reverse order. */) | |
fdb82f93 | 2063 | (window, minibuf, all_frames) |
67492200 | 2064 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2065 | { |
67492200 | 2066 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2067 | } |
2068 | ||
67492200 | 2069 | |
62c07cc7 | 2070 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2071 | doc: /* Select another window in cyclic ordering of windows. |
2072 | COUNT specifies the number of windows to skip, starting with the | |
2073 | selected window, before making the selection. If COUNT is | |
2074 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2075 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2076 | window, so select the selected window. In an interactive call, | |
2077 | COUNT is the numeric prefix argument. Return nil. | |
2078 | ||
2079 | This function uses `next-window' for finding the window to select. | |
2080 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2081 | but the MINIBUF argument of `next-window' is always effectively | |
2082 | nil. */) | |
2083 | (count, all_frames) | |
2084 | Lisp_Object count, all_frames; | |
7ab12479 | 2085 | { |
67492200 GM |
2086 | Lisp_Object window; |
2087 | int i; | |
7ab12479 | 2088 | |
ab6d1131 | 2089 | CHECK_NUMBER (count); |
67492200 | 2090 | window = selected_window; |
177c0ea7 | 2091 | |
ab6d1131 | 2092 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2093 | window = Fnext_window (window, Qnil, all_frames); |
2094 | for (; i < 0; ++i) | |
2095 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2096 | |
14d87dc9 | 2097 | Fselect_window (window, Qnil); |
7ab12479 JB |
2098 | return Qnil; |
2099 | } | |
67492200 GM |
2100 | |
2101 | ||
2102 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2103 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2104 | FRAME nil or omitted means use the selected frame. | |
2105 | WINDOW nil or omitted means use the selected window. | |
2106 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2107 | MINIBUF nil or omitted means include the minibuffer window only | |
2108 | if it's active. | |
2109 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2110 | (frame, minibuf, window) | |
cd2904bd GM |
2111 | Lisp_Object frame, minibuf, window; |
2112 | { | |
cd2904bd | 2113 | if (NILP (window)) |
acc6289a SM |
2114 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2115 | CHECK_WINDOW (window); | |
cd2904bd GM |
2116 | if (NILP (frame)) |
2117 | frame = selected_frame; | |
2118 | ||
2119 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2120 | error ("Window is on a different frame"); | |
2121 | ||
2122 | return window_list_1 (window, minibuf, frame); | |
2123 | } | |
2124 | ||
2125 | ||
ab6d1131 | 2126 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2127 | for `next-window'. */ |
2128 | ||
2129 | static Lisp_Object | |
2130 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2131 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2132 | { |
403de3b4 | 2133 | Lisp_Object tail, list, rest; |
67492200 GM |
2134 | |
2135 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2136 | list = Qnil; | |
177c0ea7 | 2137 | |
67492200 | 2138 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2139 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2140 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2141 | |
403de3b4 RS |
2142 | /* Rotate the list to start with WINDOW. */ |
2143 | list = Fnreverse (list); | |
2144 | rest = Fmemq (window, list); | |
2145 | if (!NILP (rest) && !EQ (rest, list)) | |
2146 | { | |
1725a7c9 | 2147 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2148 | ; |
2149 | XSETCDR (tail, Qnil); | |
2150 | list = nconc2 (rest, list); | |
2151 | } | |
2152 | return list; | |
67492200 GM |
2153 | } |
2154 | ||
2155 | ||
7ab12479 JB |
2156 | \f |
2157 | /* Look at all windows, performing an operation specified by TYPE | |
2158 | with argument OBJ. | |
75d8f668 | 2159 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2160 | Qnil, look at just the selected frame; |
89bca612 | 2161 | Qvisible, look at visible frames; |
75d8f668 | 2162 | a frame, just look at windows on that frame. |
85fe3b5e | 2163 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2164 | |
2165 | enum window_loop | |
2166 | { | |
2167 | WINDOW_LOOP_UNUSED, | |
2168 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2169 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2170 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2171 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2172 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2173 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2174 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2175 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2176 | }; |
2177 | ||
2178 | static Lisp_Object | |
44fa5b1e | 2179 | window_loop (type, obj, mini, frames) |
7ab12479 | 2180 | enum window_loop type; |
118ea242 | 2181 | Lisp_Object obj, frames; |
7ab12479 JB |
2182 | int mini; |
2183 | { | |
118ea242 GM |
2184 | Lisp_Object window, windows, best_window, frame_arg; |
2185 | struct frame *f; | |
ffdc852d | 2186 | struct gcpro gcpro1; |
177c0ea7 | 2187 | |
44fa5b1e JB |
2188 | /* If we're only looping through windows on a particular frame, |
2189 | frame points to that frame. If we're looping through windows | |
2190 | on all frames, frame is 0. */ | |
2191 | if (FRAMEP (frames)) | |
118ea242 | 2192 | f = XFRAME (frames); |
44fa5b1e | 2193 | else if (NILP (frames)) |
118ea242 | 2194 | f = SELECTED_FRAME (); |
7ab12479 | 2195 | else |
118ea242 | 2196 | f = NULL; |
177c0ea7 | 2197 | |
118ea242 | 2198 | if (f) |
89bca612 | 2199 | frame_arg = Qlambda; |
0f8fe9a2 | 2200 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2201 | frame_arg = frames; |
89bca612 RS |
2202 | else if (EQ (frames, Qvisible)) |
2203 | frame_arg = frames; | |
118ea242 GM |
2204 | else |
2205 | frame_arg = Qt; | |
7ab12479 | 2206 | |
89bca612 RS |
2207 | /* frame_arg is Qlambda to stick to one frame, |
2208 | Qvisible to consider all visible frames, | |
2209 | or Qt otherwise. */ | |
2210 | ||
7ab12479 | 2211 | /* Pick a window to start with. */ |
017b2bad | 2212 | if (WINDOWP (obj)) |
118ea242 GM |
2213 | window = obj; |
2214 | else if (f) | |
2215 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2216 | else |
118ea242 | 2217 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2218 | |
cd2904bd | 2219 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2220 | GCPRO1 (windows); |
7ab12479 | 2221 | best_window = Qnil; |
118ea242 | 2222 | |
e67a1dea | 2223 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2224 | { |
118ea242 | 2225 | struct window *w; |
177c0ea7 | 2226 | |
118ea242 GM |
2227 | window = XCAR (windows); |
2228 | w = XWINDOW (window); | |
177c0ea7 | 2229 | |
118ea242 GM |
2230 | /* Note that we do not pay attention here to whether the frame |
2231 | is visible, since Fwindow_list skips non-visible frames if | |
2232 | that is desired, under the control of frame_arg. */ | |
2233 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2234 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2235 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2236 | || (mini && minibuf_level > 0)) |
2237 | switch (type) | |
2238 | { | |
2239 | case GET_BUFFER_WINDOW: | |
118ea242 | 2240 | if (EQ (w->buffer, obj) |
5c204627 RS |
2241 | /* Don't find any minibuffer window |
2242 | except the one that is currently in use. */ | |
118ea242 GM |
2243 | && (MINI_WINDOW_P (w) |
2244 | ? EQ (window, minibuf_window) | |
2245 | : 1)) | |
2246 | { | |
5ddc1b75 GM |
2247 | if (NILP (best_window)) |
2248 | best_window = window; | |
2249 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2250 | /* Prefer to return selected-window. */ |
2251 | RETURN_UNGCPRO (window); | |
2252 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2253 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2254 | best_window = window; |
118ea242 | 2255 | } |
7ab12479 JB |
2256 | break; |
2257 | ||
2258 | case GET_LRU_WINDOW: | |
20b69789 SM |
2259 | /* `obj' is an integer encoding a bitvector. |
2260 | `obj & 1' means consider only full-width windows. | |
2261 | `obj & 2' means consider also dedicated windows. */ | |
2262 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2263 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2264 | /* Minibuffer windows are always ignored. */ |
2265 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2266 | break; |
265a9e55 | 2267 | if (NILP (best_window) |
7ab12479 | 2268 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2269 | > XFASTINT (w->use_time))) |
2270 | best_window = window; | |
7ab12479 JB |
2271 | break; |
2272 | ||
2273 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2274 | if (!EQ (window, obj)) |
2275 | Fdelete_window (window); | |
7ab12479 JB |
2276 | break; |
2277 | ||
2278 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2279 | if (EQ (w->buffer, obj)) |
7ab12479 | 2280 | { |
118ea242 | 2281 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2282 | |
2283 | /* If this window is dedicated, and in a frame of its own, | |
2284 | kill the frame. */ | |
118ea242 GM |
2285 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2286 | && !NILP (w->dedicated) | |
3548e138 | 2287 | && other_visible_frames (f)) |
7ab12479 | 2288 | { |
3548e138 RS |
2289 | /* Skip the other windows on this frame. |
2290 | There might be one, the minibuffer! */ | |
118ea242 GM |
2291 | while (CONSP (XCDR (windows)) |
2292 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2293 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2294 | windows = XCDR (windows); | |
177c0ea7 | 2295 | |
3548e138 | 2296 | /* Now we can safely delete the frame. */ |
56f2de10 | 2297 | delete_frame (w->frame, Qnil); |
118ea242 GM |
2298 | } |
2299 | else if (NILP (w->parent)) | |
2300 | { | |
2301 | /* If we're deleting the buffer displayed in the | |
2302 | only window on the frame, find a new buffer to | |
2303 | display there. */ | |
2304 | Lisp_Object buffer; | |
2305 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1c33c906 MR |
2306 | /* Reset dedicated state of window. */ |
2307 | w->dedicated = Qnil; | |
949cf20f | 2308 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2309 | if (EQ (window, selected_window)) |
2310 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2311 | } |
2312 | else | |
118ea242 | 2313 | Fdelete_window (window); |
7ab12479 JB |
2314 | } |
2315 | break; | |
2316 | ||
2317 | case GET_LARGEST_WINDOW: | |
20b69789 | 2318 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2319 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2320 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2321 | break; |
177c0ea7 | 2322 | |
c930dfab | 2323 | if (NILP (best_window)) |
118ea242 | 2324 | best_window = window; |
c930dfab GM |
2325 | else |
2326 | { | |
2327 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2328 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2329 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2330 | best_window = window; |
2331 | } | |
7ab12479 JB |
2332 | } |
2333 | break; | |
2334 | ||
2335 | case UNSHOW_BUFFER: | |
118ea242 | 2336 | if (EQ (w->buffer, obj)) |
7ab12479 | 2337 | { |
118ea242 GM |
2338 | Lisp_Object buffer; |
2339 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2340 | |
7ab12479 | 2341 | /* Find another buffer to show in this window. */ |
118ea242 | 2342 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2343 | |
38ab08d1 RS |
2344 | /* If this window is dedicated, and in a frame of its own, |
2345 | kill the frame. */ | |
118ea242 GM |
2346 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2347 | && !NILP (w->dedicated) | |
38ab08d1 | 2348 | && other_visible_frames (f)) |
45945a7b RS |
2349 | { |
2350 | /* Skip the other windows on this frame. | |
2351 | There might be one, the minibuffer! */ | |
118ea242 GM |
2352 | while (CONSP (XCDR (windows)) |
2353 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2354 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2355 | windows = XCDR (windows); | |
177c0ea7 | 2356 | |
45945a7b | 2357 | /* Now we can safely delete the frame. */ |
56f2de10 | 2358 | delete_frame (w->frame, Qnil); |
45945a7b | 2359 | } |
a5731348 SM |
2360 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2361 | { | |
2362 | Lisp_Object window; | |
2363 | XSETWINDOW (window, w); | |
2364 | /* If this window is dedicated and not the only window | |
2365 | in its frame, then kill it. */ | |
2366 | Fdelete_window (window); | |
2367 | } | |
38ab08d1 | 2368 | else |
38ab08d1 RS |
2369 | { |
2370 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2371 | w->dedicated = Qnil; |
949cf20f | 2372 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2373 | if (EQ (window, selected_window)) |
2374 | Fset_buffer (w->buffer); | |
38ab08d1 | 2375 | } |
7ab12479 JB |
2376 | } |
2377 | break; | |
3f8ab7bd | 2378 | |
6b61353c KH |
2379 | case REDISPLAY_BUFFER_WINDOWS: |
2380 | if (EQ (w->buffer, obj)) | |
2381 | { | |
2382 | mark_window_display_accurate (window, 0); | |
2383 | w->update_mode_line = Qt; | |
2384 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2385 | ++update_mode_lines; | |
2386 | best_window = window; | |
2387 | } | |
2388 | break; | |
2389 | ||
3f8ab7bd RS |
2390 | /* Check for a window that has a killed buffer. */ |
2391 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2392 | if (! NILP (w->buffer) |
2393 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2394 | abort (); |
118ea242 | 2395 | break; |
6bbd7a29 GM |
2396 | |
2397 | case WINDOW_LOOP_UNUSED: | |
2398 | break; | |
7ab12479 | 2399 | } |
7ab12479 | 2400 | } |
7ab12479 | 2401 | |
118ea242 | 2402 | UNGCPRO; |
7ab12479 | 2403 | return best_window; |
37962e60 | 2404 | } |
605be8af | 2405 | |
3f8ab7bd RS |
2406 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2407 | ||
233a4a2c | 2408 | void |
3f8ab7bd RS |
2409 | check_all_windows () |
2410 | { | |
2411 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2412 | } | |
2413 | ||
3cbb13c8 | 2414 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2415 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2416 | \(LRU means Least Recently Used.) |
2417 | ||
6b61353c | 2418 | Return a full-width window if possible. |
c2755926 | 2419 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2420 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2421 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2422 | If optional argument FRAME is `visible', search all visible frames. |
2423 | If FRAME is 0, search all visible and iconified frames. | |
2424 | If FRAME is t, search all frames. | |
2425 | If FRAME is nil, search only the selected frame. | |
2426 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2427 | (frame, dedicated) |
2428 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2429 | { |
2430 | register Lisp_Object w; | |
2431 | /* First try for a window that is full-width */ | |
20b69789 SM |
2432 | w = window_loop (GET_LRU_WINDOW, |
2433 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2434 | 0, frame); | |
265a9e55 | 2435 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2436 | return w; |
2437 | /* If none of them, try the rest */ | |
20b69789 SM |
2438 | return window_loop (GET_LRU_WINDOW, |
2439 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2440 | 0, frame); | |
7ab12479 JB |
2441 | } |
2442 | ||
3cbb13c8 | 2443 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2444 | doc: /* Return the largest window in area. |
c2755926 | 2445 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2446 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2447 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2448 | If optional argument FRAME is `visible', search all visible frames. |
2449 | If FRAME is 0, search all visible and iconified frames. | |
2450 | If FRAME is t, search all frames. | |
2451 | If FRAME is nil, search only the selected frame. | |
2452 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2453 | (frame, dedicated) |
2454 | Lisp_Object frame, dedicated; | |
7ab12479 | 2455 | { |
20b69789 | 2456 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2457 | frame); |
7ab12479 JB |
2458 | } |
2459 | ||
fec89261 MR |
2460 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
2461 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. | |
2462 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the | |
2463 | current buffer. | |
fdb82f93 PJ |
2464 | If optional argument FRAME is `visible', search all visible frames. |
2465 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2466 | If FRAME is t, search all frames. | |
2467 | If FRAME is nil, search only the selected frame. | |
2468 | If FRAME is a frame, search only that frame. */) | |
fec89261 MR |
2469 | (buffer_or_name, frame) |
2470 | Lisp_Object buffer_or_name, frame; | |
7ab12479 | 2471 | { |
fec89261 MR |
2472 | Lisp_Object buffer; |
2473 | ||
2474 | if (NILP (buffer_or_name)) | |
2475 | buffer = Fcurrent_buffer (); | |
2476 | else | |
2477 | buffer = Fget_buffer (buffer_or_name); | |
2478 | ||
017b2bad | 2479 | if (BUFFERP (buffer)) |
44fa5b1e | 2480 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2481 | else |
2482 | return Qnil; | |
2483 | } | |
2484 | ||
2485 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2486 | 0, 1, "", |
2487 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2488 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
2489 | This function tries to reduce display jumps by keeping the text |
2490 | previously visible in WINDOW in the same place on the frame. Doing this | |
2491 | depends on the value of (window-start WINDOW), so if calling this | |
2492 | function in a program gives strange scrolling, make sure the | |
2493 | window-start value is reasonable when this function is called. */) | |
fdb82f93 | 2494 | (window) |
7ab12479 JB |
2495 | Lisp_Object window; |
2496 | { | |
2497 | struct window *w; | |
00d3d838 | 2498 | int startpos; |
85fe3b5e | 2499 | int top, new_top; |
7ab12479 | 2500 | |
265a9e55 | 2501 | if (NILP (window)) |
7ab12479 JB |
2502 | window = selected_window; |
2503 | else | |
b7826503 | 2504 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2505 | w = XWINDOW (window); |
a2b38b3c | 2506 | |
00d3d838 | 2507 | startpos = marker_position (w->start); |
949cf20f | 2508 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2509 | |
a2b38b3c RS |
2510 | if (MINI_WINDOW_P (w) && top > 0) |
2511 | error ("Can't expand minibuffer to full frame"); | |
2512 | ||
70728a80 | 2513 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2514 | |
00d3d838 KH |
2515 | /* Try to minimize scrolling, by setting the window start to the point |
2516 | will cause the text at the old window start to be at the same place | |
2517 | on the frame. But don't try to do this if the window start is | |
2518 | outside the visible portion (as might happen when the display is | |
2519 | not current, due to typeahead). */ | |
949cf20f | 2520 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2521 | if (new_top != top |
2522 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2523 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2524 | { | |
2525 | struct position pos; | |
2526 | struct buffer *obuf = current_buffer; | |
2527 | ||
2528 | Fset_buffer (w->buffer); | |
2529 | /* This computation used to temporarily move point, but that can | |
2530 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2531 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2532 | |
b73ea88e | 2533 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2534 | w->window_end_valid = Qnil; |
b73ea88e RS |
2535 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2536 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2537 | : Qnil); |
80622eec RS |
2538 | /* We need to do this, so that the window-scroll-functions |
2539 | get called. */ | |
4d047f50 | 2540 | w->optional_new_start = Qt; |
00d3d838 KH |
2541 | |
2542 | set_buffer_internal (obuf); | |
2543 | } | |
5500c422 | 2544 | |
7ab12479 JB |
2545 | return Qnil; |
2546 | } | |
2547 | ||
2548 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
2549 | 0, 2, "bDelete windows on (buffer): ", |
2550 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
2551 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2552 | defaults to the current buffer. | |
2553 | ||
fdb82f93 PJ |
2554 | Optional second argument FRAME controls which frames are affected. |
2555 | If optional argument FRAME is `visible', search all visible frames. | |
2556 | If FRAME is 0, search all visible and iconified frames. | |
2557 | If FRAME is nil, search all frames. | |
2558 | If FRAME is t, search only the selected frame. | |
d653c8cc | 2559 | If FRAME is a frame, search only that frame. |
fec89261 MR |
2560 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
2561 | its frame, that frame is deleted when there are other frames left. */) | |
2562 | (buffer_or_name, frame) | |
2563 | Lisp_Object buffer_or_name, frame; | |
7ab12479 | 2564 | { |
fec89261 MR |
2565 | Lisp_Object buffer; |
2566 | ||
26f6279d JB |
2567 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2568 | expects. */ | |
c520265e RS |
2569 | if (NILP (frame)) |
2570 | frame = Qt; | |
2571 | else if (EQ (frame, Qt)) | |
2572 | frame = Qnil; | |
26f6279d | 2573 | |
fec89261 MR |
2574 | if (NILP (buffer_or_name)) |
2575 | buffer = Fcurrent_buffer (); | |
2576 | else | |
7ab12479 | 2577 | { |
fec89261 | 2578 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2579 | CHECK_BUFFER (buffer); |
7ab12479 | 2580 | } |
177c0ea7 | 2581 | |
fec89261 MR |
2582 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
2583 | ||
7ab12479 JB |
2584 | return Qnil; |
2585 | } | |
2586 | ||
2587 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 2588 | Sreplace_buffer_in_windows, |
fec89261 MR |
2589 | 0, 1, "bReplace buffer in windows: ", |
2590 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
2591 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2592 | defaults to the current buffer. | |
2593 | ||
2594 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
2595 | deleted. If that window is the only window on its frame, that frame is | |
2596 | deleted too when there are other frames left. If there are no other | |
2597 | frames left, some other buffer is displayed in that window. */) | |
2598 | (buffer_or_name) | |
2599 | Lisp_Object buffer_or_name; | |
2600 | { | |
2601 | Lisp_Object buffer; | |
2602 | ||
2603 | if (NILP (buffer_or_name)) | |
2604 | buffer = Fcurrent_buffer (); | |
2605 | else | |
7ab12479 | 2606 | { |
fec89261 | 2607 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2608 | CHECK_BUFFER (buffer); |
7ab12479 | 2609 | } |
fec89261 MR |
2610 | |
2611 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2612 | ||
7ab12479 JB |
2613 | return Qnil; |
2614 | } | |
ff58478b RS |
2615 | |
2616 | /* Replace BUFFER with some other buffer in all windows | |
2617 | of all frames, even those on other keyboards. */ | |
2618 | ||
2619 | void | |
2620 | replace_buffer_in_all_windows (buffer) | |
2621 | Lisp_Object buffer; | |
2622 | { | |
2623 | Lisp_Object tail, frame; | |
2624 | ||
ff58478b RS |
2625 | /* A single call to window_loop won't do the job |
2626 | because it only considers frames on the current keyboard. | |
2627 | So loop manually over frames, and handle each one. */ | |
2628 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2629 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2630 | } |
7ab12479 JB |
2631 | \f |
2632 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2633 | |
2634 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2635 | might crash Emacs. */ | |
5500c422 | 2636 | |
a481b3ea | 2637 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2638 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2639 | |
047aaeb9 MR |
2640 | /* For wp non-zero the total number of columns of window w. Otherwise |
2641 | the total number of lines of w. */ | |
a481b3ea | 2642 | |
047aaeb9 MR |
2643 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2644 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2645 | |
2646 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2647 | minimum allowable size. */ | |
5500c422 | 2648 | |
605be8af | 2649 | void |
a481b3ea | 2650 | check_frame_size (frame, rows, cols) |
605be8af JB |
2651 | FRAME_PTR frame; |
2652 | int *rows, *cols; | |
a481b3ea | 2653 | { |
628df3bf | 2654 | /* For height, we have to see: |
54b8bcb5 RS |
2655 | how many windows the frame has at minimum (one or two), |
2656 | and whether it has a menu bar or other special stuff at the top. */ | |
2657 | int min_height | |
2658 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2659 | ? MIN_SAFE_WINDOW_HEIGHT | |
2660 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2661 | |
5500c422 GM |
2662 | if (FRAME_TOP_MARGIN (frame) > 0) |
2663 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2664 | |
2665 | if (*rows < min_height) | |
2666 | *rows = min_height; | |
2667 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2668 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2669 | } | |
2670 | ||
233a4a2c GM |
2671 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2672 | check if W's width can be changed, otherwise check W's height. | |
2673 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2674 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2675 | either. */ | |
c1636aa6 | 2676 | |
233a4a2c GM |
2677 | static int |
2678 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2679 | struct window *w; | |
2680 | int width_p, check_siblings_p; | |
2681 | { | |
2682 | int fixed_p; | |
2683 | struct window *c; | |
177c0ea7 | 2684 | |
233a4a2c GM |
2685 | if (!NILP (w->hchild)) |
2686 | { | |
2687 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2688 | |
233a4a2c GM |
2689 | if (width_p) |
2690 | { | |
047aaeb9 | 2691 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2692 | children are. */ |
2693 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2694 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2695 | fixed_p = c == NULL; | |
2696 | } | |
2697 | else | |
2698 | { | |
047aaeb9 | 2699 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2700 | children is. */ |
2701 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2702 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2703 | fixed_p = c != NULL; | |
2704 | } | |
2705 | } | |
2706 | else if (!NILP (w->vchild)) | |
2707 | { | |
2708 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2709 | |
233a4a2c GM |
2710 | if (width_p) |
2711 | { | |
047aaeb9 | 2712 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2713 | children is. */ |
2714 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2715 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2716 | fixed_p = c != NULL; | |
2717 | } | |
2718 | else | |
2719 | { | |
047aaeb9 | 2720 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2721 | children are. */ |
2722 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2723 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2724 | fixed_p = c == NULL; | |
2725 | } | |
2726 | } | |
2727 | else if (BUFFERP (w->buffer)) | |
2728 | { | |
3df0580e AS |
2729 | struct buffer *old = current_buffer; |
2730 | Lisp_Object val; | |
177c0ea7 | 2731 | |
3df0580e AS |
2732 | current_buffer = XBUFFER (w->buffer); |
2733 | val = find_symbol_value (Qwindow_size_fixed); | |
2734 | current_buffer = old; | |
a34dfd12 | 2735 | |
3df0580e AS |
2736 | fixed_p = 0; |
2737 | if (!EQ (val, Qunbound)) | |
2738 | { | |
2739 | fixed_p = !NILP (val); | |
177c0ea7 | 2740 | |
3df0580e AS |
2741 | if (fixed_p |
2742 | && ((EQ (val, Qheight) && width_p) | |
2743 | || (EQ (val, Qwidth) && !width_p))) | |
2744 | fixed_p = 0; | |
233a4a2c GM |
2745 | } |
2746 | ||
2747 | /* Can't tell if this one is resizable without looking at | |
2748 | siblings. If all siblings are fixed-size this one is too. */ | |
2749 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2750 | { | |
2751 | Lisp_Object child; | |
177c0ea7 | 2752 | |
9beb8baa | 2753 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2754 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2755 | break; | |
2756 | ||
2757 | if (NILP (child)) | |
9beb8baa | 2758 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2759 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2760 | break; | |
2761 | ||
2762 | if (NILP (child)) | |
2763 | fixed_p = 1; | |
2764 | } | |
2765 | } | |
2766 | else | |
2767 | fixed_p = 1; | |
2768 | ||
2769 | return fixed_p; | |
2770 | } | |
177c0ea7 | 2771 | |
047aaeb9 MR |
2772 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2773 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2774 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2775 | return values that won't crash Emacs and don't hide components like | |
2776 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2777 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2778 | |
2779 | static int | |
047aaeb9 | 2780 | window_min_size_2 (w, width_p, safe_p) |
f1de8c77 | 2781 | struct window *w; |
047aaeb9 | 2782 | int width_p, safe_p; |
f1de8c77 | 2783 | { |
047aaeb9 MR |
2784 | /* We should consider buffer-local values of window_min_height and |
2785 | window_min_width here. */ | |
f1de8c77 | 2786 | if (width_p) |
047aaeb9 MR |
2787 | { |
2788 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 2789 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2790 | + WINDOW_SCROLL_BAR_COLS (w)); |
2791 | ||
2792 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2793 | } | |
f1de8c77 | 2794 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2795 | return 1; |
f1de8c77 | 2796 | else |
047aaeb9 MR |
2797 | { |
2798 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2799 | + ((BUFFERP (w->buffer) | |
2800 | && !NILP (XBUFFER (w->buffer)->mode_line_format)) | |
2801 | ? 1 : 0)); | |
f1de8c77 | 2802 | |
047aaeb9 MR |
2803 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2804 | } | |
f1de8c77 | 2805 | } |
233a4a2c | 2806 | |
047aaeb9 MR |
2807 | /* Return minimum size of window W, not taking fixed-width windows into |
2808 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2809 | return the minimum height. SAFE_P non-zero means ignore | |
2810 | window-min-height|width but just return values that won't crash Emacs | |
2811 | and don't hide components like fringes, scrollbars, or modelines. If | |
2812 | W is a combination window, compute the minimum size from the minimum | |
2813 | sizes of W's children. */ | |
233a4a2c GM |
2814 | |
2815 | static int | |
047aaeb9 | 2816 | window_min_size_1 (w, width_p, safe_p) |
c1636aa6 | 2817 | struct window *w; |
047aaeb9 | 2818 | int width_p, safe_p; |
c1636aa6 | 2819 | { |
233a4a2c | 2820 | struct window *c; |
c1636aa6 | 2821 | int size; |
177c0ea7 | 2822 | |
233a4a2c GM |
2823 | if (!NILP (w->hchild)) |
2824 | { | |
047aaeb9 | 2825 | /* W is a horizontal combination. */ |
233a4a2c GM |
2826 | c = XWINDOW (w->hchild); |
2827 | size = 0; | |
177c0ea7 | 2828 | |
233a4a2c GM |
2829 | if (width_p) |
2830 | { | |
047aaeb9 MR |
2831 | /* The minimum width of a horizontal combination is the sum of |
2832 | the minimum widths of its children. */ | |
233a4a2c GM |
2833 | while (c) |
2834 | { | |
047aaeb9 | 2835 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2836 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2837 | } | |
2838 | } | |
2839 | else | |
2840 | { | |
047aaeb9 MR |
2841 | /* The minimum height of a horizontal combination is the |
2842 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2843 | while (c) |
2844 | { | |
047aaeb9 | 2845 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2846 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2847 | } | |
2848 | } | |
2849 | } | |
2850 | else if (!NILP (w->vchild)) | |
2851 | { | |
047aaeb9 | 2852 | /* W is a vertical combination. */ |
233a4a2c GM |
2853 | c = XWINDOW (w->vchild); |
2854 | size = 0; | |
177c0ea7 | 2855 | |
233a4a2c GM |
2856 | if (width_p) |
2857 | { | |
047aaeb9 MR |
2858 | /* The minimum width of a vertical combination is the maximum |
2859 | of the minimum widths of its children. */ | |
233a4a2c GM |
2860 | while (c) |
2861 | { | |
047aaeb9 | 2862 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2863 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2864 | } | |
2865 | } | |
2866 | else | |
2867 | { | |
047aaeb9 MR |
2868 | /* The minimum height of a vertical combination is the sum of |
2869 | the minimum height of its children. */ | |
233a4a2c GM |
2870 | while (c) |
2871 | { | |
047aaeb9 | 2872 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2873 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2874 | } | |
2875 | } | |
2876 | } | |
c1636aa6 | 2877 | else |
047aaeb9 MR |
2878 | /* W is a leaf window. */ |
2879 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2880 | |
2881 | return size; | |
2882 | } | |
2883 | ||
233a4a2c | 2884 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2885 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2886 | return the minimum height. SAFE_P non-zero means ignore | |
2887 | window-min-height|width but just return values that won't crash Emacs | |
2888 | and don't hide components like fringes, scrollbars, or modelines. | |
2889 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2890 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2891 | |
233a4a2c | 2892 | static int |
047aaeb9 | 2893 | window_min_size (w, width_p, safe_p, ignore_fixed_p, fixed) |
233a4a2c | 2894 | struct window *w; |
047aaeb9 | 2895 | int width_p, safe_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2896 | { |
2897 | int size, fixed_p; | |
2898 | ||
f984d4fc GM |
2899 | if (ignore_fixed_p) |
2900 | fixed_p = 0; | |
2901 | else | |
2902 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2903 | |
233a4a2c GM |
2904 | if (fixed) |
2905 | *fixed = fixed_p; | |
177c0ea7 | 2906 | |
233a4a2c | 2907 | if (fixed_p) |
047aaeb9 | 2908 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2909 | else |
047aaeb9 | 2910 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2911 | |
233a4a2c GM |
2912 | return size; |
2913 | } | |
2914 | ||
2915 | ||
79fd290e | 2916 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2917 | Return 1 if window width is ok after adjustment; 0 if window |
2918 | is still too narrow. */ | |
2919 | ||
2920 | static int | |
2921 | adjust_window_margins (w) | |
2922 | struct window *w; | |
2923 | { | |
2924 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2925 | - WINDOW_FRINGE_COLS (w) | |
2926 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2927 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2928 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2929 | ||
2930 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2931 | return 1; | |
2932 | ||
2933 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2934 | return 0; | |
2935 | ||
2936 | /* Window's text area is too narrow, but reducing the window | |
2937 | margins will fix that. */ | |
2938 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2939 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2940 | { | |
2941 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2942 | w->left_margin_cols = w->right_margin_cols | |
2943 | = make_number (margin_cols/2); | |
2944 | else | |
2945 | w->right_margin_cols = make_number (margin_cols); | |
2946 | } | |
2947 | else | |
2948 | w->left_margin_cols = make_number (margin_cols); | |
2949 | return 1; | |
2950 | } | |
2951 | ||
047aaeb9 MR |
2952 | /* Calculate new sizes for windows in the list FORWARD when their |
2953 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
2954 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
2955 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
2956 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
2957 | shrink columns, otherwise shrink lines. | |
6b61353c | 2958 | |
047aaeb9 MR |
2959 | SAFE_P zero means windows may be sized down to window-min-height |
2960 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
2961 | non-zero means windows may be sized down to their minimum safe sizes | |
2962 | taking into account the space needed to display modelines, fringes, | |
2963 | and scrollbars. | |
6b61353c | 2964 | |
047aaeb9 MR |
2965 | This function returns an allocated array of new sizes that the caller |
2966 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
2967 | zero. A size zero means the window shall be deleted. Array index 0 | |
2968 | refers to the first window in FORWARD, 1 to the second, and so on. | |
2969 | ||
2970 | This function resizes windows proportionally to their size. It also | |
2971 | tries to preserve smaller windows by resizing larger windows before | |
2972 | resizing any window to zero. If resize_proportionally is non-nil for | |
2973 | a specific window, it will attempt to strictly resize that window | |
2974 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 2975 | static int * |
047aaeb9 MR |
2976 | shrink_windows (total, size, nchildren, shrinkable, resize_fixed_p, |
2977 | forward, width_p, safe_p) | |
2978 | int total, size, nchildren, shrinkable; | |
2979 | int resize_fixed_p, width_p, safe_p; | |
6b61353c KH |
2980 | Lisp_Object forward; |
2981 | { | |
2982 | int available_resize = 0; | |
047aaeb9 | 2983 | int *new_sizes, *min_sizes; |
6b61353c KH |
2984 | struct window *c; |
2985 | Lisp_Object child; | |
2986 | int smallest = total; | |
2987 | int total_removed = 0; | |
2988 | int total_shrink = total - size; | |
2989 | int i; | |
2990 | ||
2991 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 2992 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
2993 | |
2994 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2995 | { | |
2996 | int child_size; | |
2997 | ||
2998 | c = XWINDOW (child); | |
047aaeb9 | 2999 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 3000 | |
047aaeb9 | 3001 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
3002 | new_sizes[i] = -1; |
3003 | else | |
3004 | { | |
3005 | new_sizes[i] = child_size; | |
047aaeb9 MR |
3006 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
3007 | if (child_size > min_sizes[i] | |
3008 | && NILP (c->resize_proportionally)) | |
3009 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
3010 | } |
3011 | } | |
3012 | /* We might need to shrink some windows to zero. Find the smallest | |
3013 | windows and set them to 0 until we can fulfil the new size. */ | |
3014 | ||
3015 | while (shrinkable > 1 && size + available_resize < total) | |
3016 | { | |
3017 | for (i = 0; i < nchildren; ++i) | |
3018 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
3019 | smallest = new_sizes[i]; | |
3020 | ||
3021 | for (i = 0; i < nchildren; ++i) | |
3022 | if (new_sizes[i] == smallest) | |
3023 | { | |
3024 | /* Resize this window down to zero. */ | |
3025 | new_sizes[i] = 0; | |
047aaeb9 MR |
3026 | if (smallest > min_sizes[i]) |
3027 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
3028 | available_resize += smallest; |
3029 | --shrinkable; | |
3030 | total_removed += smallest; | |
3031 | ||
ef614e04 JD |
3032 | /* We don't know what the smallest is now. */ |
3033 | smallest = total; | |
3034 | ||
6b61353c KH |
3035 | /* Out of for, just remove one window at the time and |
3036 | check again if we have enough space. */ | |
3037 | break; | |
3038 | } | |
3039 | } | |
3040 | ||
3041 | /* Now, calculate the new sizes. Try to shrink each window | |
3042 | proportional to its size. */ | |
3043 | for (i = 0; i < nchildren; ++i) | |
3044 | { | |
047aaeb9 | 3045 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 3046 | { |
047aaeb9 MR |
3047 | int to_shrink = total_shrink * new_sizes[i] / total; |
3048 | ||
3049 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
3050 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
3051 | new_sizes[i] -= to_shrink; |
3052 | total_removed += to_shrink; | |
3053 | } | |
3054 | } | |
3055 | ||
3056 | /* Any reminder due to rounding, we just subtract from windows | |
3057 | that are left and still can be shrunk. */ | |
3058 | while (total_shrink > total_removed) | |
3059 | { | |
ef614e04 JD |
3060 | int nonzero_sizes = 0; |
3061 | int nonzero_idx = -1; | |
3062 | ||
3063 | for (i = 0; i < nchildren; ++i) | |
3064 | if (new_sizes[i] > 0) | |
3065 | { | |
3066 | ++nonzero_sizes; | |
3067 | nonzero_idx = i; | |
3068 | } | |
c49a0495 | 3069 | |
6b61353c | 3070 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3071 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3072 | { |
3073 | --new_sizes[i]; | |
3074 | ++total_removed; | |
3075 | ||
3076 | /* Out of for, just shrink one window at the time and | |
3077 | check again if we have enough space. */ | |
3078 | break; | |
3079 | } | |
ef614e04 | 3080 | |
ef614e04 JD |
3081 | /* Special case, only one window left. */ |
3082 | if (nonzero_sizes == 1) | |
3083 | break; | |
3084 | } | |
3085 | ||
3086 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3087 | while (total_shrink < total_removed) | |
3088 | { | |
3089 | for (i = 0; i < nchildren; ++i) | |
3090 | { | |
3091 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3092 | { | |
3093 | ++new_sizes[i]; | |
3094 | --total_removed; | |
3095 | break; | |
3096 | } | |
3097 | } | |
6b61353c KH |
3098 | } |
3099 | ||
047aaeb9 MR |
3100 | xfree (min_sizes); |
3101 | ||
6b61353c KH |
3102 | return new_sizes; |
3103 | } | |
949cf20f | 3104 | |
233a4a2c | 3105 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3106 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3107 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3108 | |
3109 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3110 | they are in series. If LAST_ONLY is 1, change only the last of | |
3111 | WINDOW's children when they are in series. | |
3112 | ||
3113 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3114 | windows that become too small unless NODELETE_P is 1. When |
3115 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3116 | window-min-width when resizing windows but use safe defaults instead. | |
3117 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3118 | |
3119 | static void | |
5fe0b054 | 3120 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 3121 | Lisp_Object window; |
233a4a2c | 3122 | int size, width_p, nodelete_p; |
5fe0b054 | 3123 | int first_only, last_only; |
7ab12479 | 3124 | { |
233a4a2c GM |
3125 | struct window *w = XWINDOW (window); |
3126 | struct window *c; | |
3127 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3128 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3129 | |
7ae2f10f | 3130 | size = max (0, size); |
177c0ea7 | 3131 | |
047aaeb9 MR |
3132 | /* Delete WINDOW if it's too small. */ |
3133 | if (nodelete_p != 1 && !NILP (w->parent) | |
3134 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3135 | { |
047aaeb9 MR |
3136 | delete_window (window); |
3137 | return; | |
7ab12479 JB |
3138 | } |
3139 | ||
233a4a2c | 3140 | /* Set redisplay hints. */ |
7ae2f10f GM |
3141 | w->last_modified = make_number (0); |
3142 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3143 | windows_or_buffers_changed++; |
7ae2f10f | 3144 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3145 | |
233a4a2c GM |
3146 | if (width_p) |
3147 | { | |
3148 | sideward = &w->vchild; | |
3149 | forward = &w->hchild; | |
949cf20f KS |
3150 | w->total_cols = make_number (size); |
3151 | adjust_window_margins (w); | |
233a4a2c GM |
3152 | } |
3153 | else | |
3154 | { | |
3155 | sideward = &w->hchild; | |
3156 | forward = &w->vchild; | |
949cf20f KS |
3157 | w->total_lines = make_number (size); |
3158 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3159 | } |
3160 | ||
3161 | if (!NILP (*sideward)) | |
7ab12479 | 3162 | { |
5fe0b054 | 3163 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3164 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3165 | { |
233a4a2c GM |
3166 | c = XWINDOW (child); |
3167 | if (width_p) | |
949cf20f | 3168 | c->left_col = w->left_col; |
233a4a2c | 3169 | else |
949cf20f | 3170 | c->top_line = w->top_line; |
5fe0b054 RS |
3171 | size_window (child, size, width_p, nodelete_p, |
3172 | first_only, last_only); | |
7ab12479 JB |
3173 | } |
3174 | } | |
5fe0b054 RS |
3175 | else if (!NILP (*forward) && last_only) |
3176 | { | |
3177 | /* Change the last in a series of siblings. */ | |
3178 | Lisp_Object last_child; | |
3179 | int child_size; | |
3180 | ||
3181 | for (child = *forward; !NILP (child); child = c->next) | |
3182 | { | |
3183 | c = XWINDOW (child); | |
3184 | last_child = child; | |
3185 | } | |
3186 | ||
047aaeb9 MR |
3187 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3188 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3189 | width_p, nodelete_p, first_only, last_only); |
3190 | } | |
3191 | else if (!NILP (*forward) && first_only) | |
3192 | { | |
3193 | /* Change the first in a series of siblings. */ | |
3194 | int child_size; | |
3195 | ||
3196 | child = *forward; | |
3197 | c = XWINDOW (child); | |
3198 | ||
3199 | if (width_p) | |
3200 | c->left_col = w->left_col; | |
3201 | else | |
3202 | c->top_line = w->top_line; | |
3203 | ||
047aaeb9 MR |
3204 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3205 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3206 | width_p, nodelete_p, first_only, last_only); |
3207 | } | |
233a4a2c | 3208 | else if (!NILP (*forward)) |
7ab12479 | 3209 | { |
233a4a2c GM |
3210 | int fixed_size, each, extra, n; |
3211 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3212 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3213 | int *new_sizes = NULL; |
233a4a2c | 3214 | |
5fe0b054 | 3215 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3216 | number of child windows. */ |
8b6d9dc9 | 3217 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3218 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3219 | { |
8b6d9dc9 | 3220 | int child_size; |
177c0ea7 | 3221 | |
7ab12479 | 3222 | c = XWINDOW (child); |
047aaeb9 | 3223 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3224 | total += child_size; |
177c0ea7 | 3225 | |
233a4a2c GM |
3226 | if (window_fixed_size_p (c, width_p, 0)) |
3227 | { | |
8b6d9dc9 | 3228 | fixed_size += child_size; |
233a4a2c GM |
3229 | ++nfixed; |
3230 | } | |
3231 | } | |
7ab12479 | 3232 | |
233a4a2c GM |
3233 | /* If the new size is smaller than fixed_size, or if there |
3234 | aren't any resizable windows, allow resizing fixed-size | |
3235 | windows. */ | |
3236 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3237 | ||
6b61353c | 3238 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3239 | value of extra takes care of rounding errors. */ |
3240 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3241 | if (size < total && n > 1) |
047aaeb9 MR |
3242 | new_sizes = shrink_windows (total, size, nchildren, n, |
3243 | resize_fixed_p, *forward, width_p, | |
3244 | nodelete_p == 2); | |
6b61353c KH |
3245 | else |
3246 | { | |
3247 | each = (size - total) / n; | |
3248 | extra = (size - total) - n * each; | |
3249 | } | |
233a4a2c GM |
3250 | |
3251 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3252 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3253 | last_pos = first_pos; |
6b61353c | 3254 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3255 | { |
3256 | int new_size, old_size; | |
177c0ea7 | 3257 | |
233a4a2c | 3258 | c = XWINDOW (child); |
047aaeb9 | 3259 | old_size = WINDOW_TOTAL_SIZE (c, width_p); |
233a4a2c | 3260 | new_size = old_size; |
7ab12479 | 3261 | |
233a4a2c GM |
3262 | /* The top or left edge position of this child equals the |
3263 | bottom or right edge of its predecessor. */ | |
3264 | if (width_p) | |
949cf20f | 3265 | c->left_col = make_number (last_pos); |
233a4a2c | 3266 | else |
949cf20f | 3267 | c->top_line = make_number (last_pos); |
7ab12479 | 3268 | |
233a4a2c GM |
3269 | /* If this child can be resized, do it. */ |
3270 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3271 | { | |
6b61353c | 3272 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3273 | extra = 0; |
3274 | } | |
177c0ea7 | 3275 | |
047aaeb9 | 3276 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3277 | edge positions to children, so it's not a no-op if we |
3278 | didn't change the child's size. */ | |
5fe0b054 | 3279 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3280 | |
3281 | /* Remember the bottom/right edge position of this child; it | |
3282 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3283 | last_pos += new_size; |
7ab12479 | 3284 | } |
233a4a2c | 3285 | |
70fdbb46 | 3286 | xfree (new_sizes); |
6b61353c | 3287 | |
233a4a2c GM |
3288 | /* We should have covered the parent exactly with child windows. */ |
3289 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3290 | |
7ab12479 | 3291 | /* Now delete any children that became too small. */ |
047aaeb9 | 3292 | if (nodelete_p != 1) |
233a4a2c | 3293 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3294 | { |
233a4a2c | 3295 | int child_size; |
047aaeb9 | 3296 | |
233a4a2c | 3297 | c = XWINDOW (child); |
047aaeb9 MR |
3298 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3299 | size_window (child, child_size, width_p, nodelete_p, | |
3300 | first_only, last_only); | |
7ab12479 JB |
3301 | } |
3302 | } | |
3303 | } | |
3304 | ||
233a4a2c | 3305 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3306 | WINDOW's children. NODELETE zero means windows that have become |
3307 | smaller than window-min-height in the process may be deleted. | |
3308 | NODELETE 1 means never delete windows that become too small in the | |
3309 | process. (The caller should check later and do so if appropriate.) | |
3310 | NODELETE 2 means delete only windows that have become too small to be | |
3311 | displayed correctly. */ | |
7ab12479 | 3312 | |
5e14b1fc | 3313 | void |
233a4a2c | 3314 | set_window_height (window, height, nodelete) |
7ab12479 | 3315 | Lisp_Object window; |
233a4a2c | 3316 | int height; |
7ab12479 JB |
3317 | int nodelete; |
3318 | { | |
5fe0b054 | 3319 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3320 | } |
7ab12479 | 3321 | |
233a4a2c | 3322 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3323 | WINDOW's children. NODELETE zero means windows that have become |
3324 | smaller than window-min-width in the process may be deleted. | |
3325 | NODELETE 1 means never delete windows that become too small in the | |
3326 | process. (The caller should check later and do so if appropriate.) | |
3327 | NODELETE 2 means delete only windows that have become too small to be | |
3328 | displayed correctly. */ | |
7ab12479 | 3329 | |
233a4a2c GM |
3330 | void |
3331 | set_window_width (window, width, nodelete) | |
3332 | Lisp_Object window; | |
3333 | int width; | |
3334 | int nodelete; | |
3335 | { | |
5fe0b054 | 3336 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3337 | } |
233a4a2c | 3338 | |
cdbc7fec KS |
3339 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3340 | ||
3341 | void | |
3342 | change_window_heights (window, n) | |
3343 | Lisp_Object window; | |
3344 | int n; | |
3345 | { | |
3346 | struct window *w = XWINDOW (window); | |
3347 | ||
949cf20f KS |
3348 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3349 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3350 | |
949cf20f KS |
3351 | if (INTEGERP (w->orig_top_line)) |
3352 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3353 | if (INTEGERP (w->orig_total_lines)) | |
3354 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3355 | |
3356 | /* Handle just the top child in a vertical split. */ | |
3357 | if (!NILP (w->vchild)) | |
3358 | change_window_heights (w->vchild, n); | |
3359 | ||
3360 | /* Adjust all children in a horizontal split. */ | |
3361 | for (window = w->hchild; !NILP (window); window = w->next) | |
3362 | { | |
3363 | w = XWINDOW (window); | |
3364 | change_window_heights (window, n); | |
3365 | } | |
3366 | } | |
3367 | ||
7ab12479 | 3368 | \f |
1d8d96fa | 3369 | int window_select_count; |
7ab12479 | 3370 | |
56613f06 SM |
3371 | EXFUN (Fset_window_fringes, 4); |
3372 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3373 | |
6a44ffb3 SM |
3374 | static void |
3375 | run_funs (Lisp_Object funs) | |
3376 | { | |
3377 | for (; CONSP (funs); funs = XCDR (funs)) | |
3378 | if (!EQ (XCAR (funs), Qt)) | |
3379 | call0 (XCAR (funs)); | |
3380 | } | |
3381 | ||
3382 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3383 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3384 | |
ef264c42 SM |
3385 | void |
3386 | run_window_configuration_change_hook (struct frame *f) | |
3387 | { | |
fec89261 | 3388 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3389 | Lisp_Object frame, global_wcch |
3390 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3391 | XSETFRAME (frame, f); | |
3392 | ||
3393 | if (NILP (Vrun_hooks)) | |
3394 | return; | |
3395 | ||
fec89261 MR |
3396 | if (SELECTED_FRAME () != f) |
3397 | { | |
c6932ecd MR |
3398 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
3399 | Fselect_frame (frame, Qt); | |
fec89261 | 3400 | } |
6a44ffb3 SM |
3401 | |
3402 | /* Use the right buffer. Matters when running the local hooks. */ | |
3403 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3404 | { | |
3405 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3406 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3407 | } | |
3408 | ||
3409 | /* Look for buffer-local values. */ | |
3410 | { | |
3411 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3412 | for (; CONSP (windows); windows = XCDR (windows)) | |
3413 | { | |
3414 | Lisp_Object window = XCAR (windows); | |
3415 | Lisp_Object buffer = Fwindow_buffer (window); | |
3416 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3417 | buffer))) | |
3418 | { | |
3419 | int count = SPECPDL_INDEX (); | |
3420 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3421 | select_window_norecord (window); | |
3422 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3423 | buffer)); | |
fec89261 MR |
3424 | unbind_to (count, Qnil); |
3425 | } | |
6a44ffb3 SM |
3426 | } |
3427 | } | |
047aaeb9 | 3428 | |
6a44ffb3 SM |
3429 | run_funs (global_wcch); |
3430 | unbind_to (count, Qnil); | |
ef264c42 SM |
3431 | } |
3432 | ||
5500c422 GM |
3433 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3434 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3435 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3436 | margins, fringes, and scroll-bar settings of the window are not | |
3437 | reset from the buffer's local settings. */ | |
7ab12479 | 3438 | |
5500c422 | 3439 | void |
949cf20f | 3440 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3441 | Lisp_Object window, buffer; |
949cf20f | 3442 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3443 | { |
3444 | struct window *w = XWINDOW (window); | |
3445 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3446 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3447 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3448 | |
3449 | w->buffer = buffer; | |
86e48436 RS |
3450 | |
3451 | if (EQ (window, selected_window)) | |
5500c422 | 3452 | b->last_selected_window = window; |
beb4e312 | 3453 | |
c49a0495 KS |
3454 | /* Let redisplay errors through. */ |
3455 | b->display_error_modiff = 0; | |
3456 | ||
beb4e312 | 3457 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3458 | if (INTEGERP (b->display_count)) |
3459 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3460 | b->display_time = Fcurrent_time (); | |
86e48436 | 3461 | |
d834a2e9 | 3462 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3463 | XSETFASTINT (w->window_end_vpos, 0); |
3464 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3465 | w->window_end_valid = Qnil; |
c3b232e4 | 3466 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3467 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3468 | vscroll. This case happens for example when called from |
3469 | change_frame_size_1, where we use a dummy call to | |
3470 | Fset_window_buffer on the frame's selected window (and no other) | |
3471 | just in order to run window-configuration-change-hook. | |
3472 | Resetting hscroll and vscroll here is problematic for things like | |
3473 | image-mode and doc-view-mode since it resets the image's position | |
3474 | whenever we resize the frame. */ | |
3475 | w->hscroll = w->min_hscroll = make_number (0); | |
3476 | w->vscroll = 0; | |
3477 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3478 | set_marker_restricted (w->start, | |
3479 | make_number (b->last_window_start), | |
3480 | buffer); | |
3481 | w->start_at_line_beg = Qnil; | |
3482 | w->force_start = Qnil; | |
3483 | XSETFASTINT (w->last_modified, 0); | |
3484 | XSETFASTINT (w->last_overlay_modified, 0); | |
3485 | } | |
3486 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3487 | I doubt it's worth the trouble. */ | |
7ab12479 | 3488 | windows_or_buffers_changed++; |
5b03d3c0 | 3489 | |
da39107c | 3490 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3491 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3492 | because that might itself be a local variable. */ | |
da39107c | 3493 | if (window_initialized) |
5b03d3c0 | 3494 | { |
da39107c | 3495 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3496 | Fset_buffer (buffer); |
3497 | } | |
3498 | ||
a1562258 SM |
3499 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3500 | ||
949cf20f KS |
3501 | if (!keep_margins_p) |
3502 | { | |
3503 | /* Set left and right marginal area width etc. from buffer. */ | |
3504 | ||
79fd290e | 3505 | /* This may call adjust_window_margins three times, so |
949cf20f | 3506 | temporarily disable window margins. */ |
6b61353c KH |
3507 | Lisp_Object save_left = w->left_margin_cols; |
3508 | Lisp_Object save_right = w->right_margin_cols; | |
3509 | ||
949cf20f KS |
3510 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3511 | ||
3512 | Fset_window_fringes (window, | |
3513 | b->left_fringe_width, b->right_fringe_width, | |
3514 | b->fringes_outside_margins); | |
3515 | ||
3516 | Fset_window_scroll_bars (window, | |
3517 | b->scroll_bar_width, | |
3518 | b->vertical_scroll_bar_type, Qnil); | |
3519 | ||
6b61353c KH |
3520 | w->left_margin_cols = save_left; |
3521 | w->right_margin_cols = save_right; | |
3522 | ||
949cf20f KS |
3523 | Fset_window_margins (window, |
3524 | b->left_margin_cols, b->right_margin_cols); | |
3525 | } | |
7ab12479 | 3526 | |
5500c422 GM |
3527 | if (run_hooks_p) |
3528 | { | |
3529 | if (! NILP (Vwindow_scroll_functions)) | |
3530 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3531 | Fmarker_position (w->start)); | |
ef264c42 | 3532 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3533 | } |
543f5fb1 | 3534 | |
5b03d3c0 | 3535 | unbind_to (count, Qnil); |
5500c422 | 3536 | } |
5b03d3c0 | 3537 | |
5500c422 | 3538 | |
949cf20f | 3539 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3540 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3541 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3542 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3543 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3544 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 3545 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 3546 | |
7bfac547 MR |
3547 | This function throws an error when WINDOW is strongly dedicated to its |
3548 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3549 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3550 | |
8fef9de1 MR |
3551 | This function runs `window-scroll-functions' before running |
3552 | `window-configuration-change-hook'. */) | |
d653c8cc MR |
3553 | (window, buffer_or_name, keep_margins) |
3554 | register Lisp_Object window, buffer_or_name, keep_margins; | |
5500c422 | 3555 | { |
d653c8cc | 3556 | register Lisp_Object tem, buffer; |
5500c422 | 3557 | register struct window *w = decode_window (window); |
5500c422 | 3558 | |
bed0c171 | 3559 | XSETWINDOW (window, w); |
d653c8cc | 3560 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3561 | CHECK_BUFFER (buffer); |
5500c422 GM |
3562 | if (NILP (XBUFFER (buffer)->name)) |
3563 | error ("Attempt to display deleted buffer"); | |
3564 | ||
3565 | tem = w->buffer; | |
aac0c6e3 MR |
3566 | if (NILP (tem)) |
3567 | error ("Window is deleted"); | |
3568 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3569 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3570 | { |
f5385255 SM |
3571 | if (!EQ (tem, buffer)) |
3572 | if (EQ (w->dedicated, Qt)) | |
3573 | error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem)->name)); | |
3574 | else | |
3575 | w->dedicated = Qnil; | |
5500c422 GM |
3576 | |
3577 | unshow_buffer (w); | |
3578 | } | |
3579 | ||
949cf20f | 3580 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3581 | return Qnil; |
3582 | } | |
3583 | ||
e6b84b30 MR |
3584 | /* If select_window is called with inhibit_point_swap non-zero it will |
3585 | not store point of the old selected window's buffer back into that | |
3586 | window's pointm slot. This is needed by Fset_window_configuration to | |
3587 | avoid that the display routine is called with selected_window set to | |
3588 | Qnil causing a subsequent crash. */ | |
2d0834cc | 3589 | |
e6b84b30 MR |
3590 | static Lisp_Object |
3591 | select_window (window, norecord, inhibit_point_swap) | |
3592 | Lisp_Object window, norecord; | |
3593 | int inhibit_point_swap; | |
7ab12479 JB |
3594 | { |
3595 | register struct window *w; | |
719eaeb1 | 3596 | register struct window *ow; |
1ae1a37d | 3597 | struct frame *sf; |
7ab12479 | 3598 | |
b7826503 | 3599 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3600 | |
3601 | w = XWINDOW (window); | |
50e88778 | 3602 | w->frozen_window_start_p = 0; |
7ab12479 | 3603 | |
4e822bdc MR |
3604 | if (NILP (norecord)) |
3605 | { | |
3606 | ++window_select_count; | |
3607 | XSETFASTINT (w->use_time, window_select_count); | |
3608 | } | |
3609 | ||
bae1fa42 | 3610 | if (EQ (window, selected_window) && !inhibit_point_swap) |
7ab12479 JB |
3611 | return window; |
3612 | ||
ca2d5566 SM |
3613 | sf = SELECTED_FRAME (); |
3614 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3615 | { | |
3616 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3617 | /* Use this rather than Fhandle_switch_frame | |
3618 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3619 | move around in the state where a minibuffer in a separate | |
3620 | frame is active. */ | |
c6932ecd | 3621 | Fselect_frame (WINDOW_FRAME (w), norecord); |
ca2d5566 SM |
3622 | /* Fselect_frame called us back so we've done all the work already. */ |
3623 | eassert (EQ (window, selected_window)); | |
3624 | return window; | |
3625 | } | |
3626 | else | |
3627 | sf->selected_window = window; | |
3628 | ||
a46c0153 RS |
3629 | /* Store the current buffer's actual point into the |
3630 | old selected window. It belongs to that window, | |
3631 | and when the window is not selected, must be in the window. */ | |
e6b84b30 | 3632 | if (!inhibit_point_swap) |
719eaeb1 GM |
3633 | { |
3634 | ow = XWINDOW (selected_window); | |
3635 | if (! NILP (ow->buffer)) | |
3636 | set_marker_both (ow->pointm, ow->buffer, | |
3637 | BUF_PT (XBUFFER (ow->buffer)), | |
3638 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3639 | } | |
7ab12479 JB |
3640 | |
3641 | selected_window = window; | |
7ab12479 | 3642 | |
14d87dc9 | 3643 | if (NILP (norecord)) |
b7354ddf | 3644 | record_buffer (w->buffer); |
7ab12479 JB |
3645 | Fset_buffer (w->buffer); |
3646 | ||
86e48436 RS |
3647 | XBUFFER (w->buffer)->last_selected_window = window; |
3648 | ||
7ab12479 JB |
3649 | /* Go to the point recorded in the window. |
3650 | This is important when the buffer is in more | |
3651 | than one window. It also matters when | |
3652 | redisplay_window has altered point after scrolling, | |
3653 | because it makes the change only in the window. */ | |
3654 | { | |
3655 | register int new_point = marker_position (w->pointm); | |
3656 | if (new_point < BEGV) | |
3657 | SET_PT (BEGV); | |
a9c95e08 | 3658 | else if (new_point > ZV) |
7ab12479 JB |
3659 | SET_PT (ZV); |
3660 | else | |
3661 | SET_PT (new_point); | |
3662 | } | |
3663 | ||
3664 | windows_or_buffers_changed++; | |
3665 | return window; | |
3666 | } | |
14d87dc9 | 3667 | |
e6b84b30 MR |
3668 | |
3669 | /* Note that selected_window can be nil when this is called from | |
3670 | Fset_window_configuration. */ | |
3671 | ||
3672 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
3673 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
3674 | If WINDOW is not already selected, make WINDOW's buffer current | |
3675 | and make WINDOW the frame's selected window. Return WINDOW. | |
3676 | Optional second arg NORECORD non-nil means do not put this buffer | |
3677 | at the front of the list of recently selected ones and do not | |
3678 | make this window the most recently selected one. | |
3679 | ||
3680 | Note that the main editor command loop selects the buffer of the | |
3681 | selected window before each command. */) | |
3682 | (window, norecord) | |
3683 | register Lisp_Object window, norecord; | |
3684 | { | |
29feb0e9 | 3685 | return select_window (window, norecord, 0); |
e6b84b30 MR |
3686 | } |
3687 | ||
14d87dc9 SM |
3688 | static Lisp_Object |
3689 | select_window_norecord (window) | |
3690 | Lisp_Object window; | |
3691 | { | |
ab6d1131 MR |
3692 | return WINDOW_LIVE_P (window) |
3693 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 3694 | } |
c6932ecd MR |
3695 | |
3696 | static Lisp_Object | |
3697 | select_frame_norecord (frame) | |
3698 | Lisp_Object frame; | |
3699 | { | |
3700 | return FRAME_LIVE_P (XFRAME (frame)) | |
3701 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3702 | } | |
b7354ddf | 3703 | \f |
87478b52 SM |
3704 | Lisp_Object |
3705 | display_buffer (buffer, not_this_window_p, override_frame) | |
3706 | Lisp_Object buffer, not_this_window_p, override_frame; | |
d07f802a | 3707 | { |
87478b52 | 3708 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3709 | } |
3710 | ||
6b61353c KH |
3711 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3712 | 0, 1, 0, | |
5a1048a5 | 3713 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3714 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3715 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c KH |
3716 | displaying that buffer. */) |
3717 | (object) | |
3718 | Lisp_Object object; | |
3719 | { | |
3720 | if (NILP (object)) | |
3721 | { | |
3722 | windows_or_buffers_changed++; | |
3723 | update_mode_lines++; | |
3724 | return Qt; | |
3725 | } | |
3726 | ||
3727 | if (WINDOWP (object)) | |
3728 | { | |
3729 | struct window *w = XWINDOW (object); | |
3730 | mark_window_display_accurate (object, 0); | |
3731 | w->update_mode_line = Qt; | |
3732 | if (BUFFERP (w->buffer)) | |
3733 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3734 | ++update_mode_lines; | |
3735 | return Qt; | |
3736 | } | |
0cc1039f | 3737 | |
6b61353c KH |
3738 | if (STRINGP (object)) |
3739 | object = Fget_buffer (object); | |
3740 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3741 | { | |
3742 | /* Walk all windows looking for buffer, and force update | |
3743 | of each of those windows. */ | |
3744 | ||
3745 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3746 | return NILP (object) ? Qnil : Qt; | |
3747 | } | |
3748 | ||
3749 | /* If nothing suitable was found, just return. | |
3750 | We could signal an error, but this feature will typically be used | |
3751 | asynchronously in timers or process sentinels, so we don't. */ | |
3752 | return Qnil; | |
3753 | } | |
3754 | ||
3755 | ||
7ab12479 JB |
3756 | void |
3757 | temp_output_buffer_show (buf) | |
3758 | register Lisp_Object buf; | |
3759 | { | |
3760 | register struct buffer *old = current_buffer; | |
3761 | register Lisp_Object window; | |
3762 | register struct window *w; | |
3763 | ||
bccd3dd1 RS |
3764 | XBUFFER (buf)->directory = current_buffer->directory; |
3765 | ||
7ab12479 | 3766 | Fset_buffer (buf); |
c6367666 | 3767 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3768 | BEGV = BEG; |
3769 | ZV = Z; | |
3770 | SET_PT (BEG); | |
06be4f85 | 3771 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3772 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3773 | #endif |
7ab12479 JB |
3774 | set_buffer_internal (old); |
3775 | ||
e67a1dea | 3776 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3777 | call1 (Vtemp_buffer_show_function, buf); |
3778 | else | |
3779 | { | |
87478b52 | 3780 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3781 | |
1ae1a37d | 3782 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3783 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3784 | Vminibuf_scroll_window = window; |
3785 | w = XWINDOW (window); | |
d834a2e9 | 3786 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3787 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3788 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3789 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3790 | |
beb4e312 | 3791 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3792 | and its buffer current. */ |
2d0834cc SM |
3793 | |
3794 | if (!NILP (Vrun_hooks) | |
3795 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3796 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3797 | { |
2d0834cc SM |
3798 | int count = SPECPDL_INDEX (); |
3799 | Lisp_Object prev_window, prev_buffer; | |
3800 | prev_window = selected_window; | |
3801 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3802 | |
2d0834cc SM |
3803 | /* Select the window that was chosen, for running the hook. |
3804 | Note: Both Fselect_window and select_window_norecord may | |
3805 | set-buffer to the buffer displayed in the window, | |
3806 | so we need to save the current buffer. --stef */ | |
3807 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3808 | record_unwind_protect (select_window_norecord, prev_window); | |
3809 | Fselect_window (window, Qt); | |
3810 | Fset_buffer (w->buffer); | |
3811 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3812 | unbind_to (count, Qnil); | |
2cccc823 RS |
3813 | } |
3814 | } | |
7ab12479 JB |
3815 | } |
3816 | \f | |
dfcf069d | 3817 | static void |
7ab12479 JB |
3818 | make_dummy_parent (window) |
3819 | Lisp_Object window; | |
3820 | { | |
cffec418 | 3821 | Lisp_Object new; |
7ab12479 | 3822 | register struct window *o, *p; |
cffec418 | 3823 | int i; |
7ab12479 | 3824 | |
cffec418 | 3825 | o = XWINDOW (window); |
26605be9 | 3826 | p = allocate_window (); |
cffec418 | 3827 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3828 | ((struct Lisp_Vector *) p)->contents[i] |
3829 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3830 | XSETWINDOW (new, p); |
7ab12479 | 3831 | |
2a1893f4 SM |
3832 | ++sequence_number; |
3833 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3834 | |
3835 | /* Put new into window structure in place of window */ | |
3836 | replace_window (window, new); | |
3837 | ||
3838 | o->next = Qnil; | |
3839 | o->prev = Qnil; | |
3840 | o->vchild = Qnil; | |
3841 | o->hchild = Qnil; | |
3842 | o->parent = new; | |
3843 | ||
3844 | p->start = Qnil; | |
3845 | p->pointm = Qnil; | |
3846 | p->buffer = Qnil; | |
3847 | } | |
3848 | ||
3849 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3850 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3851 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
3852 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
3853 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
3854 | window's scroll bar, or the divider column to its right. | |
c2755926 | 3855 | Interactively, all arguments are nil. |
c2755926 | 3856 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
3857 | The upper or leftmost window is the original one, and remains selected |
3858 | if it was selected before. | |
3859 | ||
87527026 MR |
3860 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
3861 | (window, size, horizontal) | |
3862 | Lisp_Object window, size, horizontal; | |
7ab12479 JB |
3863 | { |
3864 | register Lisp_Object new; | |
3865 | register struct window *o, *p; | |
c0807608 | 3866 | FRAME_PTR fo; |
77ae0fe3 | 3867 | register int size_int; |
7ab12479 | 3868 | |
265a9e55 | 3869 | if (NILP (window)) |
7ab12479 JB |
3870 | window = selected_window; |
3871 | else | |
b7826503 | 3872 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3873 | |
3874 | o = XWINDOW (window); | |
c0807608 | 3875 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3876 | |
77ae0fe3 | 3877 | if (NILP (size)) |
7ab12479 | 3878 | { |
87527026 | 3879 | if (!NILP (horizontal)) |
c0807608 | 3880 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3881 | the usable space in columns by two. |
3882 | We round up, since the left-hand window may include | |
3883 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3884 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3885 | else |
949cf20f | 3886 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3887 | } |
3888 | else | |
3889 | { | |
b7826503 | 3890 | CHECK_NUMBER (size); |
77ae0fe3 | 3891 | size_int = XINT (size); |
7ab12479 JB |
3892 | } |
3893 | ||
3894 | if (MINI_WINDOW_P (o)) | |
3895 | error ("Attempt to split minibuffer window"); | |
87527026 | 3896 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 3897 | error ("Attempt to split fixed-size window"); |
7ab12479 | 3898 | |
87527026 | 3899 | if (NILP (horizontal)) |
7ab12479 | 3900 | { |
047aaeb9 MR |
3901 | int window_safe_height = window_min_size_2 (o, 0, 0); |
3902 | ||
f1de8c77 | 3903 | if (size_int < window_safe_height) |
77ae0fe3 | 3904 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 3905 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 3906 | error ("Window height %d too small (after splitting)", |
949cf20f | 3907 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3908 | if (NILP (o->parent) |
3909 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3910 | { |
3911 | make_dummy_parent (window); | |
3912 | new = o->parent; | |
3913 | XWINDOW (new)->vchild = window; | |
3914 | } | |
3915 | } | |
3916 | else | |
3917 | { | |
047aaeb9 MR |
3918 | int window_safe_width = window_min_size_2 (o, 1, 0); |
3919 | ||
f1de8c77 | 3920 | if (size_int < window_safe_width) |
77ae0fe3 | 3921 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 3922 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 3923 | error ("Window width %d too small (after splitting)", |
949cf20f | 3924 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3925 | if (NILP (o->parent) |
3926 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3927 | { |
3928 | make_dummy_parent (window); | |
3929 | new = o->parent; | |
3930 | XWINDOW (new)->hchild = window; | |
3931 | } | |
3932 | } | |
3933 | ||
3934 | /* Now we know that window's parent is a vertical combination | |
3935 | if we are dividing vertically, or a horizontal combination | |
3936 | if we are making side-by-side windows */ | |
3937 | ||
3938 | windows_or_buffers_changed++; | |
c0807608 | 3939 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3940 | new = make_window (); |
3941 | p = XWINDOW (new); | |
3942 | ||
44fa5b1e | 3943 | p->frame = o->frame; |
7ab12479 | 3944 | p->next = o->next; |
265a9e55 | 3945 | if (!NILP (p->next)) |
7ab12479 JB |
3946 | XWINDOW (p->next)->prev = new; |
3947 | p->prev = window; | |
3948 | o->next = new; | |
3949 | p->parent = o->parent; | |
3950 | p->buffer = Qt; | |
5500c422 GM |
3951 | p->window_end_valid = Qnil; |
3952 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 3953 | |
949cf20f KS |
3954 | /* Duplicate special geometry settings. */ |
3955 | ||
3956 | p->left_margin_cols = o->left_margin_cols; | |
3957 | p->right_margin_cols = o->right_margin_cols; | |
3958 | p->left_fringe_width = o->left_fringe_width; | |
3959 | p->right_fringe_width = o->right_fringe_width; | |
3960 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3961 | p->scroll_bar_width = o->scroll_bar_width; | |
3962 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3963 | ||
44fa5b1e | 3964 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3965 | |
87527026 | 3966 | if (!NILP (horizontal)) |
7ab12479 | 3967 | { |
949cf20f KS |
3968 | p->total_lines = o->total_lines; |
3969 | p->top_line = o->top_line; | |
3970 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3971 | XSETFASTINT (o->total_cols, size_int); | |
3972 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3973 | adjust_window_margins (p); | |
3974 | adjust_window_margins (o); | |
7ab12479 JB |
3975 | } |
3976 | else | |
3977 | { | |
949cf20f KS |
3978 | p->left_col = o->left_col; |
3979 | p->total_cols = o->total_cols; | |
3980 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3981 | XSETFASTINT (o->total_lines, size_int); | |
3982 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3983 | } |
3984 | ||
5500c422 GM |
3985 | /* Adjust glyph matrices. */ |
3986 | adjust_glyphs (fo); | |
949cf20f KS |
3987 | |
3988 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3989 | return new; |
3990 | } | |
3991 | \f | |
56ebfae2 | 3992 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
3993 | doc: /* Make selected window SIZE lines taller. |
3994 | Interactively, if no argument is given, make the selected window one | |
3995 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
3996 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
3997 | -SIZE lines or columns. Return nil. | |
3998 | ||
3999 | This function can delete windows if they get too small. The size of | |
4000 | fixed size windows is not altered by this function. */) | |
4001 | (size, horizontal) | |
4002 | Lisp_Object size, horizontal; | |
7ab12479 | 4003 | { |
aac0c6e3 MR |
4004 | CHECK_NUMBER (size); |
4005 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 4006 | |
eeca6f6f | 4007 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4008 | |
7ab12479 JB |
4009 | return Qnil; |
4010 | } | |
4011 | ||
56ebfae2 | 4012 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
4013 | doc: /* Make selected window SIZE lines smaller. |
4014 | Interactively, if no argument is given, make the selected window one | |
4015 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
4016 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
4017 | window by -SIZE lines or columns. Return nil. | |
4018 | ||
4019 | This function can delete windows if they get too small. The size of | |
4020 | fixed size windows is not altered by this function. */) | |
4021 | (size, horizontal) | |
4022 | Lisp_Object size, horizontal; | |
4023 | { | |
4024 | CHECK_NUMBER (size); | |
4025 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 4026 | |
eeca6f6f | 4027 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4028 | |
7ab12479 JB |
4029 | return Qnil; |
4030 | } | |
4031 | ||
4032 | int | |
4033 | window_height (window) | |
4034 | Lisp_Object window; | |
4035 | { | |
4036 | register struct window *p = XWINDOW (window); | |
949cf20f | 4037 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4038 | } |
4039 | ||
4040 | int | |
4041 | window_width (window) | |
4042 | Lisp_Object window; | |
4043 | { | |
4044 | register struct window *p = XWINDOW (window); | |
949cf20f | 4045 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4046 | } |
4047 | ||
177c0ea7 | 4048 | |
7ab12479 | 4049 | #define CURBEG(w) \ |
5afc696a | 4050 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4051 | |
4052 | #define CURSIZE(w) \ | |
5afc696a | 4053 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 4054 | |
233a4a2c | 4055 | |
047aaeb9 MR |
4056 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
4057 | horizontally; zero means do it vertically. | |
f95284d2 | 4058 | |
5afc696a | 4059 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 4060 | request. If they become too small in the process, they may be |
56ebfae2 | 4061 | deleted. */ |
7ab12479 | 4062 | |
f984d4fc | 4063 | static void |
56ebfae2 | 4064 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4065 | Lisp_Object window; |
56ebfae2 | 4066 | int delta, horiz_flag; |
7ab12479 | 4067 | { |
86c8e823 | 4068 | Lisp_Object parent, next, prev; |
233a4a2c | 4069 | struct window *p; |
3578db3c KR |
4070 | Lisp_Object *sizep; |
4071 | int maximum; | |
5e14b1fc | 4072 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4073 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4074 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4075 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4076 | |
233a4a2c | 4077 | /* Give up if this window cannot be resized. */ |
5afc696a | 4078 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4079 | error ("Window is not resizable"); |
4080 | ||
4081 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4082 | while (1) |
4083 | { | |
4084 | p = XWINDOW (window); | |
4085 | parent = p->parent; | |
177c0ea7 | 4086 | |
265a9e55 | 4087 | if (NILP (parent)) |
7ab12479 | 4088 | { |
5afc696a | 4089 | if (horiz_flag) |
7ab12479 JB |
4090 | error ("No other window to side of this one"); |
4091 | break; | |
4092 | } | |
177c0ea7 | 4093 | |
5afc696a | 4094 | if (horiz_flag |
233a4a2c | 4095 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4096 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4097 | break; |
177c0ea7 | 4098 | |
7ab12479 JB |
4099 | window = parent; |
4100 | } | |
4101 | ||
05c2896a | 4102 | sizep = &CURSIZE (window); |
7ab12479 | 4103 | |
7ab12479 JB |
4104 | { |
4105 | register int maxdelta; | |
7ab12479 | 4106 | |
f95284d2 RS |
4107 | /* Compute the maximum size increment this window can have. */ |
4108 | ||
56ebfae2 RS |
4109 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4110 | /* This is a main window followed by a minibuffer. */ | |
4111 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4112 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4113 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4114 | /* This is a minibuffer following a main window. */ |
4115 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4116 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4117 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4118 | /* This is a frame with only one window, a minibuffer-only |
4119 | or a minibufferless frame. */ | |
4120 | : (delta = 0)); | |
7ab12479 JB |
4121 | |
4122 | if (delta > maxdelta) | |
4123 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4124 | the full frame, or make the only window aside from the |
4125 | minibuffer the full frame. */ | |
7ab12479 | 4126 | delta = maxdelta; |
6b54027b | 4127 | } |
d5783c40 | 4128 | |
047aaeb9 MR |
4129 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4130 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4131 | { |
543f5fb1 | 4132 | delete_window (window); |
d5783c40 | 4133 | return; |
6b54027b RS |
4134 | } |
4135 | ||
4136 | if (delta == 0) | |
4137 | return; | |
7ab12479 | 4138 | |
f95284d2 | 4139 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4140 | maximum = 0; |
9beb8baa | 4141 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4142 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4143 | horiz_flag, 0, 0, 0); |
9beb8baa | 4144 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4145 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4146 | horiz_flag, 0, 0, 0); |
db98a733 | 4147 | |
f95284d2 | 4148 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4149 | if (delta <= maximum) |
7ab12479 | 4150 | { |
db98a733 RS |
4151 | Lisp_Object first_unaffected; |
4152 | Lisp_Object first_affected; | |
233a4a2c | 4153 | int fixed_p; |
db98a733 RS |
4154 | |
4155 | next = p->next; | |
4156 | prev = p->prev; | |
4157 | first_affected = window; | |
4158 | /* Look at one sibling at a time, | |
4159 | moving away from this window in both directions alternately, | |
4160 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4161 | while (delta != 0 |
56ebfae2 | 4162 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4163 | { |
db98a733 RS |
4164 | if (! NILP (next)) |
4165 | { | |
c1636aa6 | 4166 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4167 | - window_min_size (XWINDOW (next), horiz_flag, |
4168 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4169 | if (!fixed_p) |
4170 | { | |
4171 | if (this_one > delta) | |
4172 | this_one = delta; | |
177c0ea7 | 4173 | |
233a4a2c | 4174 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4175 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4176 | |
233a4a2c GM |
4177 | delta -= this_one; |
4178 | } | |
177c0ea7 | 4179 | |
db98a733 RS |
4180 | next = XWINDOW (next)->next; |
4181 | } | |
177c0ea7 | 4182 | |
db98a733 RS |
4183 | if (delta == 0) |
4184 | break; | |
177c0ea7 | 4185 | |
56ebfae2 | 4186 | if (! NILP (prev)) |
db98a733 | 4187 | { |
c1636aa6 | 4188 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4189 | - window_min_size (XWINDOW (prev), horiz_flag, |
4190 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4191 | if (!fixed_p) |
4192 | { | |
4193 | if (this_one > delta) | |
4194 | this_one = delta; | |
177c0ea7 | 4195 | |
233a4a2c | 4196 | first_affected = prev; |
177c0ea7 | 4197 | |
233a4a2c | 4198 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4199 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4200 | |
4201 | delta -= this_one; | |
4202 | } | |
177c0ea7 | 4203 | |
db98a733 RS |
4204 | prev = XWINDOW (prev)->prev; |
4205 | } | |
4206 | } | |
4207 | ||
233a4a2c GM |
4208 | xassert (delta == 0); |
4209 | ||
db98a733 RS |
4210 | /* Now recalculate the edge positions of all the windows affected, |
4211 | based on the new sizes. */ | |
4212 | first_unaffected = next; | |
4213 | prev = first_affected; | |
4214 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4215 | prev = next, next = XWINDOW (next)->next) | |
4216 | { | |
3578db3c | 4217 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4218 | /* This does not change size of NEXT, |
4219 | but it propagates the new top edge to its children */ | |
4220 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4221 | } | |
7ab12479 JB |
4222 | } |
4223 | else | |
4224 | { | |
4225 | register int delta1; | |
4226 | register int opht = (*sizefun) (parent); | |
4227 | ||
3578db3c | 4228 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4229 | { |
4230 | /* If trying to grow this window to or beyond size of the parent, | |
4231 | just delete all the sibling windows. */ | |
dc1ab1ee | 4232 | Lisp_Object start, tem, next; |
daf516d3 | 4233 | |
dc1ab1ee RS |
4234 | start = XWINDOW (parent)->vchild; |
4235 | if (NILP (start)) | |
4236 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4237 | |
dc1ab1ee RS |
4238 | /* Delete any siblings that come after WINDOW. */ |
4239 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4240 | while (! NILP (tem)) |
4241 | { | |
4242 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4243 | delete_window (tem); |
4244 | tem = next; | |
4245 | } | |
4246 | ||
4247 | /* Delete any siblings that come after WINDOW. | |
4248 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4249 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4250 | tem = start; |
4251 | while (! EQ (tem, window)) | |
4252 | { | |
4253 | next = XWINDOW (tem)->next; | |
4254 | delete_window (tem); | |
daf516d3 RS |
4255 | tem = next; |
4256 | } | |
4257 | } | |
7ab12479 | 4258 | else |
233a4a2c GM |
4259 | { |
4260 | /* Otherwise, make delta1 just right so that if we add | |
4261 | delta1 lines to this window and to the parent, and then | |
4262 | shrink the parent back to its original size, the new | |
4263 | proportional size of this window will increase by delta. | |
4264 | ||
4265 | The function size_window will compute the new height h' | |
4266 | of the window from delta1 as: | |
177c0ea7 | 4267 | |
233a4a2c GM |
4268 | e = delta1/n |
4269 | x = delta1 - delta1/n * n for the 1st resizable child | |
4270 | h' = h + e + x | |
4271 | ||
4272 | where n is the number of children that can be resized. | |
4273 | We can ignore x by choosing a delta1 that is a multiple of | |
4274 | n. We want the height of this window to come out as | |
177c0ea7 | 4275 | |
233a4a2c GM |
4276 | h' = h + delta |
4277 | ||
4278 | So, delta1 must be | |
177c0ea7 | 4279 | |
233a4a2c GM |
4280 | h + e = h + delta |
4281 | delta1/n = delta | |
4282 | delta1 = n * delta. | |
4283 | ||
a5731348 | 4284 | The number of children n equals the number of resizable |
233a4a2c | 4285 | children of this window + 1 because we know window itself |
04bf5b65 | 4286 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4287 | |
4288 | This reasoning is not correct when other windows become too | |
4289 | small and shrink_windows refuses to delete them. Below we | |
4290 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4291 | |
4292 | struct window *w = XWINDOW (window); | |
4293 | Lisp_Object s; | |
4294 | int n = 1; | |
4295 | ||
9beb8baa | 4296 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4297 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4298 | ++n; |
9beb8baa | 4299 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4300 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4301 | ++n; |
4302 | ||
4303 | delta1 = n * delta; | |
7ab12479 | 4304 | |
daf516d3 RS |
4305 | /* Add delta1 lines or columns to this window, and to the parent, |
4306 | keeping things consistent while not affecting siblings. */ | |
4307 | XSETINT (CURSIZE (parent), opht + delta1); | |
4308 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4309 | ||
4310 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4311 | shrinking this window and siblings proportionately. This |
4312 | brings parent back to correct size. Delta1 was calculated | |
4313 | so this makes this window the desired size, taking it all | |
4314 | out of the siblings. | |
4315 | ||
4316 | Temporarily set resize_proportionally to Qt to assure that, | |
4317 | if necessary, shrink_windows deletes smaller windows rather | |
4318 | than shrink this window. */ | |
4319 | w->resize_proportionally = Qt; | |
daf516d3 | 4320 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4321 | w->resize_proportionally = Qnil; |
daf516d3 | 4322 | } |
7ab12479 JB |
4323 | } |
4324 | ||
d834a2e9 | 4325 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4326 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4327 | |
4328 | /* Adjust glyph matrices. */ | |
4329 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4330 | } |
c1636aa6 | 4331 | |
0d384044 RS |
4332 | |
4333 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4334 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4335 | zero means adjust the height, moving the bottom edge. | |
4336 | ||
4337 | Following siblings of the selected window are resized to fulfill | |
4338 | the size request. If they become too small in the process, they | |
4339 | are not deleted; instead, we signal an error. */ | |
4340 | ||
4341 | static void | |
4342 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4343 | Lisp_Object window; | |
4344 | int delta, horiz_flag; | |
4345 | { | |
4346 | Lisp_Object parent, child; | |
4347 | struct window *p; | |
4348 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4349 | int delcount = window_deletion_count; | |
4350 | ||
0d384044 RS |
4351 | CHECK_WINDOW (window); |
4352 | ||
4353 | /* Give up if this window cannot be resized. */ | |
4354 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4355 | error ("Window is not resizable"); | |
4356 | ||
4357 | while (1) | |
4358 | { | |
bd99e242 RS |
4359 | Lisp_Object first_parallel = Qnil; |
4360 | ||
c32de52a | 4361 | if (NILP (window)) |
0d384044 | 4362 | { |
5fe0b054 RS |
4363 | /* This happens if WINDOW on the previous iteration was |
4364 | at top level of the window tree. */ | |
0d384044 | 4365 | Fset_window_configuration (old_config); |
c32de52a | 4366 | error ("Specified window edge is fixed"); |
0d384044 RS |
4367 | } |
4368 | ||
c32de52a RS |
4369 | p = XWINDOW (window); |
4370 | parent = p->parent; | |
4371 | ||
bd99e242 RS |
4372 | /* See if this level has windows in parallel in the specified |
4373 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4374 | if (horiz_flag) | |
4375 | { | |
4376 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4377 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4378 | else if (NILP (parent) && !NILP (p->next)) |
4379 | { | |
4380 | /* Handle the vertical chain of main window and minibuffer | |
4381 | which has no parent. */ | |
4382 | first_parallel = window; | |
4383 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4384 | first_parallel = XWINDOW (first_parallel)->prev; | |
4385 | } | |
bd99e242 RS |
4386 | } |
4387 | else | |
4388 | { | |
4389 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4390 | first_parallel = XWINDOW (parent)->hchild; | |
4391 | } | |
4392 | ||
c32de52a | 4393 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4394 | and this window is the last one, and there is no higher level, |
4395 | its trailing edge is fixed. */ | |
4396 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4397 | && NILP (parent)) | |
c32de52a RS |
4398 | { |
4399 | Fset_window_configuration (old_config); | |
4400 | error ("Specified window edge is fixed"); | |
4401 | } | |
4402 | ||
0d384044 RS |
4403 | /* Don't make this window too small. */ |
4404 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4405 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4406 | { |
4407 | Fset_window_configuration (old_config); | |
4408 | error ("Cannot adjust window size as specified"); | |
4409 | } | |
4410 | ||
4411 | /* Clear out some redisplay caches. */ | |
4412 | XSETFASTINT (p->last_modified, 0); | |
4413 | XSETFASTINT (p->last_overlay_modified, 0); | |
4414 | ||
4415 | /* Adjust this window's edge. */ | |
4416 | XSETINT (CURSIZE (window), | |
4417 | XINT (CURSIZE (window)) + delta); | |
4418 | ||
4419 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4420 | make them smaller, and exit the loop. |
4421 | ||
0d384044 RS |
4422 | (If we reach the top of the tree and can never do this, |
4423 | we will fail and report an error, above.) */ | |
bd99e242 | 4424 | if (NILP (first_parallel)) |
0d384044 | 4425 | { |
c32de52a | 4426 | if (!NILP (p->next)) |
0d384044 | 4427 | { |
e99c7521 JD |
4428 | /* This may happen for the minibuffer. In that case |
4429 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4430 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4431 | { |
4432 | Fset_window_configuration (old_config); | |
4433 | error ("Cannot adjust window size as specified"); | |
4434 | } | |
4435 | ||
0d384044 RS |
4436 | XSETINT (CURBEG (p->next), |
4437 | XINT (CURBEG (p->next)) + delta); | |
4438 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4439 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4440 | break; |
4441 | } | |
4442 | } | |
4443 | else | |
4444 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4445 | Change the size of the other siblings. */ | |
bd99e242 | 4446 | for (child = first_parallel; |
0d384044 RS |
4447 | ! NILP (child); |
4448 | child = XWINDOW (child)->next) | |
4449 | if (! EQ (child, window)) | |
4450 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4451 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4452 | |
4453 | window = parent; | |
4454 | } | |
4455 | ||
4456 | /* If we made a window so small it got deleted, | |
4457 | we failed. Report failure. */ | |
4458 | if (delcount != window_deletion_count) | |
4459 | { | |
4460 | Fset_window_configuration (old_config); | |
4461 | error ("Cannot adjust window size as specified"); | |
4462 | } | |
4463 | ||
4464 | /* Adjust glyph matrices. */ | |
4465 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4466 | } | |
4467 | ||
7ab12479 JB |
4468 | #undef CURBEG |
4469 | #undef CURSIZE | |
4470 | ||
0d384044 RS |
4471 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4472 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4473 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4474 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4475 | Otherwise, adjust the height, moving the bottom edge. |
4476 | ||
4477 | Following siblings of the selected window are resized to fulfill | |
4478 | the size request. If they become too small in the process, they | |
4479 | are not deleted; instead, we signal an error. */) | |
4480 | (window, delta, horizontal) | |
4481 | Lisp_Object window, delta, horizontal; | |
4482 | { | |
4483 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4484 | if (NILP (window)) |
4485 | window = selected_window; | |
0d384044 RS |
4486 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4487 | ||
eeca6f6f SM |
4488 | run_window_configuration_change_hook |
4489 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4490 | |
4491 | return Qnil; | |
4492 | } | |
4493 | ||
5500c422 | 4494 | |
f984d4fc GM |
4495 | \f |
4496 | /*********************************************************************** | |
4497 | Resizing Mini-Windows | |
4498 | ***********************************************************************/ | |
4499 | ||
4500 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4501 | |
43b4a21f GM |
4502 | enum save_restore_action |
4503 | { | |
4504 | CHECK_ORIG_SIZES, | |
4505 | SAVE_ORIG_SIZES, | |
4506 | RESTORE_ORIG_SIZES | |
4507 | }; | |
4508 | ||
177c0ea7 | 4509 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4510 | enum save_restore_action)); |
f984d4fc GM |
4511 | |
4512 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4513 | from lowest windows first. */ | |
4514 | ||
4515 | static void | |
4516 | shrink_window_lowest_first (w, height) | |
4517 | struct window *w; | |
4518 | int height; | |
4519 | { | |
4520 | struct window *c; | |
4521 | Lisp_Object child; | |
4522 | int old_height; | |
4523 | ||
4524 | xassert (!MINI_WINDOW_P (w)); | |
4525 | ||
4526 | /* Set redisplay hints. */ | |
4527 | XSETFASTINT (w->last_modified, 0); | |
4528 | XSETFASTINT (w->last_overlay_modified, 0); | |
4529 | windows_or_buffers_changed++; | |
4530 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4531 | ||
949cf20f KS |
4532 | old_height = XFASTINT (w->total_lines); |
4533 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4534 | |
4535 | if (!NILP (w->hchild)) | |
4536 | { | |
4537 | for (child = w->hchild; !NILP (child); child = c->next) | |
4538 | { | |
4539 | c = XWINDOW (child); | |
949cf20f | 4540 | c->top_line = w->top_line; |
f984d4fc GM |
4541 | shrink_window_lowest_first (c, height); |
4542 | } | |
4543 | } | |
4544 | else if (!NILP (w->vchild)) | |
4545 | { | |
4546 | Lisp_Object last_child; | |
4547 | int delta = old_height - height; | |
4548 | int last_top; | |
6bbd7a29 GM |
4549 | |
4550 | last_child = Qnil; | |
177c0ea7 | 4551 | |
f984d4fc GM |
4552 | /* Find the last child. We are taking space from lowest windows |
4553 | first, so we iterate over children from the last child | |
4554 | backwards. */ | |
9beb8baa | 4555 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4556 | last_child = child; |
4557 | ||
047aaeb9 | 4558 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4559 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4560 | { | |
4561 | int this_one; | |
177c0ea7 | 4562 | |
f984d4fc | 4563 | c = XWINDOW (child); |
047aaeb9 | 4564 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4565 | |
4566 | if (this_one > delta) | |
4567 | this_one = delta; | |
4568 | ||
949cf20f | 4569 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4570 | delta -= this_one; |
4571 | } | |
4572 | ||
4573 | /* Compute new positions. */ | |
949cf20f | 4574 | last_top = XINT (w->top_line); |
f984d4fc GM |
4575 | for (child = w->vchild; !NILP (child); child = c->next) |
4576 | { | |
4577 | c = XWINDOW (child); | |
949cf20f KS |
4578 | c->top_line = make_number (last_top); |
4579 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4580 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4581 | } |
4582 | } | |
4583 | } | |
4584 | ||
4585 | ||
43b4a21f GM |
4586 | /* Save, restore, or check positions and sizes in the window tree |
4587 | rooted at W. ACTION says what to do. | |
f984d4fc | 4588 | |
949cf20f KS |
4589 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4590 | orig_total_lines members are valid for all windows in the window | |
4591 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4592 | |
43b4a21f | 4593 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4594 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4595 | |
949cf20f KS |
4596 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4597 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4598 | |
4599 | static int | |
4600 | save_restore_orig_size (w, action) | |
f984d4fc | 4601 | struct window *w; |
43b4a21f | 4602 | enum save_restore_action action; |
f984d4fc | 4603 | { |
43b4a21f GM |
4604 | int success_p = 1; |
4605 | ||
f984d4fc GM |
4606 | while (w) |
4607 | { | |
4608 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4609 | { |
4610 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4611 | success_p = 0; | |
4612 | } | |
f984d4fc | 4613 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4614 | { |
4615 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4616 | success_p = 0; | |
4617 | } | |
177c0ea7 | 4618 | |
43b4a21f | 4619 | switch (action) |
f984d4fc | 4620 | { |
43b4a21f | 4621 | case CHECK_ORIG_SIZES: |
949cf20f | 4622 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4623 | return 0; |
4624 | break; | |
4625 | ||
4626 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4627 | w->orig_top_line = w->top_line; |
4628 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4629 | XSETFASTINT (w->last_modified, 0); |
4630 | XSETFASTINT (w->last_overlay_modified, 0); | |
4631 | break; | |
4632 | ||
4633 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4634 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4635 | w->top_line = w->orig_top_line; | |
4636 | w->total_lines = w->orig_total_lines; | |
4637 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4638 | XSETFASTINT (w->last_modified, 0); |
4639 | XSETFASTINT (w->last_overlay_modified, 0); | |
4640 | break; | |
4641 | ||
4642 | default: | |
4643 | abort (); | |
f984d4fc | 4644 | } |
43b4a21f | 4645 | |
f984d4fc GM |
4646 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4647 | } | |
43b4a21f GM |
4648 | |
4649 | return success_p; | |
f984d4fc GM |
4650 | } |
4651 | ||
4652 | ||
4653 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4654 | without deleting other windows. */ | |
4655 | ||
4656 | void | |
4657 | grow_mini_window (w, delta) | |
4658 | struct window *w; | |
4659 | int delta; | |
4660 | { | |
4661 | struct frame *f = XFRAME (w->frame); | |
4662 | struct window *root; | |
177c0ea7 | 4663 | |
f984d4fc | 4664 | xassert (MINI_WINDOW_P (w)); |
522d013a JB |
4665 | /* Commenting out the following assertion goes against the stated interface |
4666 | of the function, but it currently does not seem to do anything useful. | |
4667 | See discussion of this issue in the thread for bug#4534. | |
4668 | xassert (delta >= 0); */ | |
177c0ea7 | 4669 | |
f984d4fc GM |
4670 | /* Compute how much we can enlarge the mini-window without deleting |
4671 | other windows. */ | |
4672 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
522d013a | 4673 | if (delta > 0) |
f984d4fc | 4674 | { |
047aaeb9 | 4675 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4676 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4677 | /* Note that the root window may already be smaller than |
eafa3196 | 4678 | min_height. */ |
949cf20f | 4679 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4680 | } |
177c0ea7 | 4681 | |
f984d4fc GM |
4682 | if (delta) |
4683 | { | |
4684 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4685 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4686 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4687 | |
4688 | /* Shrink other windows. */ | |
949cf20f | 4689 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4690 | |
4691 | /* Grow the mini-window. */ | |
949cf20f KS |
4692 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4693 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4694 | XSETFASTINT (w->last_modified, 0); |
4695 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4696 | |
f984d4fc GM |
4697 | adjust_glyphs (f); |
4698 | } | |
4699 | } | |
4700 | ||
4701 | ||
86c8e823 GM |
4702 | /* Shrink mini-window W. If there is recorded info about window sizes |
4703 | before a call to grow_mini_window, restore recorded window sizes. | |
4704 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4705 | line. */ | |
f984d4fc GM |
4706 | |
4707 | void | |
4708 | shrink_mini_window (w) | |
4709 | struct window *w; | |
4710 | { | |
4711 | struct frame *f = XFRAME (w->frame); | |
4712 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4713 | ||
43b4a21f | 4714 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4715 | { |
43b4a21f | 4716 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4717 | adjust_glyphs (f); |
4718 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4719 | windows_or_buffers_changed = 1; | |
4720 | } | |
949cf20f | 4721 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4722 | { |
0130fe1a GM |
4723 | /* Distribute the additional lines of the mini-window |
4724 | among the other windows. */ | |
86c8e823 GM |
4725 | Lisp_Object window; |
4726 | XSETWINDOW (window, w); | |
56ebfae2 | 4727 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4728 | } |
f984d4fc GM |
4729 | } |
4730 | ||
4731 | ||
4732 | \f | |
5500c422 GM |
4733 | /* Mark window cursors off for all windows in the window tree rooted |
4734 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4735 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4736 | the frame are cleared. */ | |
4737 | ||
4738 | void | |
4739 | mark_window_cursors_off (w) | |
4740 | struct window *w; | |
4741 | { | |
4742 | while (w) | |
4743 | { | |
4744 | if (!NILP (w->hchild)) | |
4745 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4746 | else if (!NILP (w->vchild)) | |
4747 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4748 | else | |
4749 | w->phys_cursor_on_p = 0; | |
4750 | ||
4751 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4752 | } | |
4753 | } | |
4754 | ||
4755 | ||
e9c195b1 | 4756 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4757 | |
4758 | int | |
4759 | window_internal_height (w) | |
4760 | struct window *w; | |
4761 | { | |
949cf20f | 4762 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4763 | |
e9c195b1 GM |
4764 | if (!MINI_WINDOW_P (w)) |
4765 | { | |
4766 | if (!NILP (w->parent) | |
4767 | || !NILP (w->vchild) | |
4768 | || !NILP (w->hchild) | |
4769 | || !NILP (w->next) | |
4770 | || !NILP (w->prev) | |
4771 | || WINDOW_WANTS_MODELINE_P (w)) | |
4772 | --ht; | |
7ab12479 | 4773 | |
e9c195b1 GM |
4774 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4775 | --ht; | |
4776 | } | |
7ab12479 JB |
4777 | |
4778 | return ht; | |
4779 | } | |
4780 | ||
535e0b8e JB |
4781 | |
4782 | /* Return the number of columns in W. | |
a3c87d4e | 4783 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4784 | separating W from the sibling to its right. */ |
5500c422 | 4785 | |
535e0b8e | 4786 | int |
949cf20f | 4787 | window_box_text_cols (w) |
535e0b8e JB |
4788 | struct window *w; |
4789 | { | |
5500c422 | 4790 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4791 | int width = XINT (w->total_cols); |
535e0b8e | 4792 | |
949cf20f | 4793 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4794 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4795 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4796 | else if (!FRAME_WINDOW_P (f) | |
4797 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4798 | /* The column of `|' characters separating side-by-side windows |
4799 | occupies one column only. */ | |
4800 | width -= 1; | |
4801 | ||
5500c422 | 4802 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4803 | /* On window-systems, fringes and display margins cannot be |
4804 | used for normal text. */ | |
4805 | width -= (WINDOW_FRINGE_COLS (w) | |
4806 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4807 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4808 | |
4809 | return width; | |
535e0b8e JB |
4810 | } |
4811 | ||
5500c422 GM |
4812 | \f |
4813 | /************************************************************************ | |
4814 | Window Scrolling | |
4815 | ***********************************************************************/ | |
535e0b8e | 4816 | |
5500c422 | 4817 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4818 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4819 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4820 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4821 | means don't signal an error if we try to move over BEGV or ZV, | |
4822 | respectively. */ | |
7ab12479 | 4823 | |
101d1605 RS |
4824 | static void |
4825 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4826 | Lisp_Object window; |
4827 | int n; | |
101d1605 | 4828 | int whole; |
f8026fd8 | 4829 | int noerror; |
5500c422 | 4830 | { |
cba59f77 RS |
4831 | immediate_quit = 1; |
4832 | ||
5500c422 GM |
4833 | /* If we must, use the pixel-based version which is much slower than |
4834 | the line-based one but can handle varying line heights. */ | |
4835 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4836 | window_scroll_pixel_based (window, n, whole, noerror); | |
4837 | else | |
4838 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4839 | |
4840 | immediate_quit = 0; | |
5500c422 GM |
4841 | } |
4842 | ||
4843 | ||
4844 | /* Implementation of window_scroll that works based on pixel line | |
4845 | heights. See the comment of window_scroll for parameter | |
4846 | descriptions. */ | |
4847 | ||
4848 | static void | |
4849 | window_scroll_pixel_based (window, n, whole, noerror) | |
4850 | Lisp_Object window; | |
4851 | int n; | |
4852 | int whole; | |
4853 | int noerror; | |
4854 | { | |
4855 | struct it it; | |
4856 | struct window *w = XWINDOW (window); | |
4857 | struct text_pos start; | |
5500c422 | 4858 | int this_scroll_margin; |
9d14503e | 4859 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4860 | int vscrolled = 0; |
5a857365 | 4861 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4862 | |
4863 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4864 | |
5500c422 | 4865 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4866 | the screen. Allow PT to be partially visible, otherwise |
4867 | something like (scroll-down 1) with PT in the line before | |
4868 | the partially visible one would recenter. */ | |
5a857365 KS |
4869 | |
4870 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4871 | { |
4872 | /* Move backward half the height of the window. Performance note: | |
4873 | vmotion used here is about 10% faster, but would give wrong | |
4874 | results for variable height lines. */ | |
4875 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4876 | it.current_y = it.last_visible_y; | |
f204989e | 4877 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4878 | |
5500c422 GM |
4879 | /* The function move_iterator_vertically may move over more than |
4880 | the specified y-distance. If it->w is small, e.g. a | |
4881 | mini-buffer window, we may end up in front of the window's | |
4882 | display area. This is the case when Start displaying at the | |
4883 | start of the line containing PT in this case. */ | |
4884 | if (it.current_y <= 0) | |
4885 | { | |
4886 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4887 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4888 | it.current_y = 0; |
4889 | } | |
4890 | ||
4891 | start = it.current.pos; | |
4892 | } | |
e56263e5 KS |
4893 | else if (auto_window_vscroll_p) |
4894 | { | |
5a857365 | 4895 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4896 | { |
4897 | int px; | |
4898 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4899 | if (whole) | |
e856c216 KS |
4900 | dy = max ((window_box_height (w) |
4901 | - next_screen_context_lines * dy), | |
4902 | dy); | |
e56263e5 KS |
4903 | dy *= n; |
4904 | ||
5a857365 | 4905 | if (n < 0) |
e56263e5 | 4906 | { |
5a857365 KS |
4907 | /* Only vscroll backwards if already vscrolled forwards. */ |
4908 | if (w->vscroll < 0 && rtop > 0) | |
4909 | { | |
4910 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4911 | Fset_window_vscroll (window, make_number (px), Qt); | |
4912 | return; | |
4913 | } | |
e56263e5 | 4914 | } |
5a857365 | 4915 | if (n > 0) |
e56263e5 | 4916 | { |
5a857365 KS |
4917 | /* Do vscroll if already vscrolled or only display line. */ |
4918 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4919 | { | |
4920 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4921 | Fset_window_vscroll (window, make_number (px), Qt); | |
4922 | return; | |
4923 | } | |
4924 | ||
4925 | /* Maybe modify window start instead of scrolling. */ | |
4926 | if (rbot > 0 || w->vscroll < 0) | |
4927 | { | |
4928 | int spos; | |
4929 | ||
4930 | Fset_window_vscroll (window, make_number (0), Qt); | |
4931 | /* If there are other text lines above the current row, | |
4932 | move window start to current row. Else to next row. */ | |
4933 | if (rbot > 0) | |
4934 | spos = XINT (Fline_beginning_position (Qnil)); | |
4935 | else | |
4936 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4937 | set_marker_restricted (w->start, make_number (spos), | |
4938 | w->buffer); | |
4939 | w->start_at_line_beg = Qt; | |
4940 | w->update_mode_line = Qt; | |
4941 | XSETFASTINT (w->last_modified, 0); | |
4942 | XSETFASTINT (w->last_overlay_modified, 0); | |
4943 | /* Set force_start so that redisplay_window will run the | |
4944 | window-scroll-functions. */ | |
4945 | w->force_start = Qt; | |
4946 | return; | |
4947 | } | |
e56263e5 KS |
4948 | } |
4949 | } | |
5a857365 | 4950 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4951 | Fset_window_vscroll (window, make_number (0), Qt); |
4952 | } | |
5500c422 | 4953 | |
d0c38d63 | 4954 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4955 | point in the same window line as it is now, so get that line. */ |
4956 | if (!NILP (Vscroll_preserve_screen_position)) | |
4957 | { | |
c525d842 CY |
4958 | /* We preserve the goal pixel coordinate across consecutive |
4959 | calls to scroll-up or scroll-down. This avoids the | |
4960 | possibility of point becoming "stuck" on a tall line when | |
4961 | scrolling by one line. */ | |
66fe93d1 | 4962 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
4963 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
4964 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
4965 | { |
4966 | start_display (&it, w, start); | |
4967 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4968 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4969 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4970 | } |
5500c422 GM |
4971 | } |
4972 | else | |
c876b227 SM |
4973 | window_scroll_pixel_based_preserve_y |
4974 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4975 | |
4976 | /* Move iterator it from start the specified distance forward or | |
4977 | backward. The result is the new window start. */ | |
4978 | start_display (&it, w, start); | |
4979 | if (whole) | |
4980 | { | |
e856c216 KS |
4981 | int start_pos = IT_CHARPOS (it); |
4982 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4983 | dy = max ((window_box_height (w) | |
4984 | - next_screen_context_lines * dy), | |
4985 | dy) * n; | |
d72340d4 GM |
4986 | |
4987 | /* Note that move_it_vertically always moves the iterator to the | |
4988 | start of a line. So, if the last line doesn't have a newline, | |
4989 | we would end up at the start of the line ending at ZV. */ | |
4990 | if (dy <= 0) | |
e856c216 KS |
4991 | { |
4992 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4993 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4994 | looking at an image that is taller that the window height. */ |
4995 | while (start_pos == IT_CHARPOS (it) | |
4996 | && start_pos > BEGV) | |
4997 | move_it_by_lines (&it, -1, 1); | |
4998 | } | |
d72340d4 | 4999 | else if (dy > 0) |
bed83ee4 | 5000 | { |
bed83ee4 KS |
5001 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5002 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5003 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5004 | looking at an image that is taller that the window height. */ |
5005 | while (start_pos == IT_CHARPOS (it) | |
5006 | && start_pos < ZV) | |
5007 | move_it_by_lines (&it, 1, 1); | |
5008 | } | |
5500c422 GM |
5009 | } |
5010 | else | |
5011 | move_it_by_lines (&it, n, 1); | |
5012 | ||
96ae58c8 RS |
5013 | /* We failed if we find ZV is already on the screen (scrolling up, |
5014 | means there's nothing past the end), or if we can't start any | |
5015 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5016 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5017 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5018 | { |
5cdb3cf3 MB |
5019 | if (IT_CHARPOS (it) == ZV) |
5020 | { | |
07ce8b53 RS |
5021 | if (it.current_y < it.last_visible_y |
5022 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5023 | > it.last_visible_y)) |
a74eca50 GM |
5024 | { |
5025 | /* The last line was only partially visible, make it fully | |
5026 | visible. */ | |
5027 | w->vscroll = (it.last_visible_y | |
5028 | - it.current_y + it.max_ascent + it.max_descent); | |
5029 | adjust_glyphs (it.f); | |
5030 | } | |
5cdb3cf3 MB |
5031 | else if (noerror) |
5032 | return; | |
cf402f3f | 5033 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5034 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5035 | else |
ba96a5cf | 5036 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5037 | } |
5500c422 | 5038 | else |
5cdb3cf3 MB |
5039 | { |
5040 | if (w->vscroll != 0) | |
5041 | /* The first line was only partially visible, make it fully | |
5042 | visible. */ | |
5043 | w->vscroll = 0; | |
5044 | else if (noerror) | |
5045 | return; | |
5046 | else | |
ba96a5cf | 5047 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5048 | } |
5049 | ||
5050 | /* If control gets here, then we vscrolled. */ | |
5051 | ||
5052 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5053 | ||
5054 | /* Don't try to change the window start below. */ | |
5055 | vscrolled = 1; | |
5500c422 GM |
5056 | } |
5057 | ||
5cdb3cf3 MB |
5058 | if (! vscrolled) |
5059 | { | |
dad67609 RS |
5060 | int pos = IT_CHARPOS (it); |
5061 | int bytepos; | |
e68def1e AS |
5062 | |
5063 | /* If in the middle of a multi-glyph character move forward to | |
5064 | the next character. */ | |
5065 | if (in_display_vector_p (&it)) | |
5066 | { | |
5067 | ++pos; | |
5068 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5069 | } | |
5070 | ||
5cdb3cf3 | 5071 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5072 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5073 | w->buffer); |
dad67609 RS |
5074 | bytepos = XMARKER (w->start)->bytepos; |
5075 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5076 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5077 | w->update_mode_line = Qt; |
5078 | XSETFASTINT (w->last_modified, 0); | |
5079 | XSETFASTINT (w->last_overlay_modified, 0); | |
5080 | /* Set force_start so that redisplay_window will run the | |
5081 | window-scroll-functions. */ | |
5082 | w->force_start = Qt; | |
5083 | } | |
177c0ea7 | 5084 | |
dc297565 RS |
5085 | /* The rest of this function uses current_y in a nonstandard way, |
5086 | not including the height of the header line if any. */ | |
5500c422 | 5087 | it.current_y = it.vpos = 0; |
177c0ea7 | 5088 | |
940f53e5 RS |
5089 | /* Move PT out of scroll margins. |
5090 | This code wants current_y to be zero at the window start position | |
5091 | even if there is a header line. */ | |
5092 | this_scroll_margin = max (0, scroll_margin); | |
5093 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5094 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5095 | ||
5096 | if (n > 0) | |
5500c422 | 5097 | { |
940f53e5 RS |
5098 | /* We moved the window start towards ZV, so PT may be now |
5099 | in the scroll margin at the top. */ | |
5100 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5101 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5102 | && (NILP (Vscroll_preserve_screen_position) | |
5103 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5104 | /* We found PT at a legitimate height. Leave it alone. */ |
5105 | ; | |
66fe93d1 | 5106 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5107 | { |
fa3c3426 RS |
5108 | /* If we have a header line, take account of it. |
5109 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5110 | move_it_to (&it, -1, |
5111 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5112 | window_scroll_pixel_based_preserve_y |
5113 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5114 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5115 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5116 | } | |
5117 | else | |
5500c422 | 5118 | { |
5500c422 | 5119 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5120 | { |
5121 | int prev = it.current_y; | |
5122 | move_it_by_lines (&it, 1, 1); | |
5123 | if (prev == it.current_y) | |
5124 | break; | |
5125 | } | |
5500c422 GM |
5126 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5127 | } | |
940f53e5 RS |
5128 | } |
5129 | else if (n < 0) | |
5130 | { | |
5131 | int charpos, bytepos; | |
aed328bf | 5132 | int partial_p; |
940f53e5 | 5133 | |
66fe93d1 LT |
5134 | /* Save our position, for the |
5135 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5136 | charpos = IT_CHARPOS (it); |
5137 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5138 | |
940f53e5 RS |
5139 | /* We moved the window start towards BEGV, so PT may be now |
5140 | in the scroll margin at the bottom. */ | |
5141 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5142 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5143 | - this_scroll_margin - 1), | |
5144 | -1, | |
940f53e5 RS |
5145 | MOVE_TO_POS | MOVE_TO_Y); |
5146 | ||
aed328bf KS |
5147 | /* Save our position, in case it's correct. */ |
5148 | charpos = IT_CHARPOS (it); | |
5149 | bytepos = IT_BYTEPOS (it); | |
5150 | ||
5151 | /* See if point is on a partially visible line at the end. */ | |
5152 | if (it.what == IT_EOB) | |
5153 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5154 | else | |
5155 | { | |
5156 | move_it_by_lines (&it, 1, 1); | |
5157 | partial_p = it.current_y > it.last_visible_y; | |
5158 | } | |
5159 | ||
bdf4ec93 RS |
5160 | if (charpos == PT && !partial_p |
5161 | && (NILP (Vscroll_preserve_screen_position) | |
5162 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5163 | /* We found PT before we found the display margin, so PT is ok. */ |
5164 | ; | |
66fe93d1 | 5165 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5166 | { |
5167 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5168 | start_display (&it, w, start); | |
c525d842 CY |
5169 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5170 | here because we called start_display again and did not | |
5171 | alter it.current_y this time. */ | |
c876b227 SM |
5172 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5173 | window_scroll_pixel_based_preserve_y, -1, | |
5174 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5175 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5176 | } | |
5177 | else | |
5178 | { | |
aed328bf | 5179 | if (partial_p) |
5cdb3cf3 MB |
5180 | /* The last line was only partially visible, so back up two |
5181 | lines to make sure we're on a fully visible line. */ | |
5182 | { | |
5183 | move_it_by_lines (&it, -2, 0); | |
5184 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5185 | } | |
5186 | else | |
5187 | /* No, the position we saved is OK, so use it. */ | |
5188 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5189 | } |
5190 | } | |
5191 | } | |
5192 | ||
5193 | ||
5194 | /* Implementation of window_scroll that works based on screen lines. | |
5195 | See the comment of window_scroll for parameter descriptions. */ | |
5196 | ||
5197 | static void | |
5198 | window_scroll_line_based (window, n, whole, noerror) | |
5199 | Lisp_Object window; | |
5200 | int n; | |
5201 | int whole; | |
5202 | int noerror; | |
7ab12479 JB |
5203 | { |
5204 | register struct window *w = XWINDOW (window); | |
5500c422 | 5205 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5206 | register int pos, pos_byte; |
7ab12479 JB |
5207 | register int ht = window_internal_height (w); |
5208 | register Lisp_Object tem; | |
5209 | int lose; | |
5500c422 | 5210 | Lisp_Object bolp; |
345d45b2 | 5211 | int startpos; |
c876b227 | 5212 | Lisp_Object original_pos = Qnil; |
101d1605 | 5213 | |
d4e7cf01 GM |
5214 | /* If scrolling screen-fulls, compute the number of lines to |
5215 | scroll from the window's height. */ | |
5216 | if (whole) | |
5217 | n *= max (1, ht - next_screen_context_lines); | |
5218 | ||
101d1605 RS |
5219 | startpos = marker_position (w->start); |
5220 | ||
c876b227 SM |
5221 | if (!NILP (Vscroll_preserve_screen_position)) |
5222 | { | |
5223 | if (window_scroll_preserve_vpos <= 0 | |
5224 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) | |
5225 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
5226 | { | |
5227 | struct position posit | |
5228 | = *compute_motion (startpos, 0, 0, 0, | |
5229 | PT, ht, 0, | |
5230 | -1, XINT (w->hscroll), | |
5231 | 0, w); | |
5232 | window_scroll_preserve_vpos = posit.vpos; | |
5233 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5234 | } | |
5235 | ||
5236 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5237 | make_number (window_scroll_preserve_vpos)); | |
5238 | } | |
0a1f771a | 5239 | |
d834a2e9 | 5240 | XSETFASTINT (tem, PT); |
6ffdb539 | 5241 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5242 | |
265a9e55 | 5243 | if (NILP (tem)) |
7ab12479 | 5244 | { |
cd2be1dd | 5245 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5246 | startpos = PT; |
7ab12479 JB |
5247 | } |
5248 | ||
345d45b2 | 5249 | SET_PT (startpos); |
5ce7b543 | 5250 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5251 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5252 | pos = PT; |
b73ea88e | 5253 | pos_byte = PT_BYTE; |
7ab12479 | 5254 | bolp = Fbolp (); |
b73ea88e | 5255 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5256 | |
5257 | if (lose) | |
f8026fd8 JB |
5258 | { |
5259 | if (noerror) | |
5260 | return; | |
5261 | else | |
ba96a5cf | 5262 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5263 | } |
7ab12479 JB |
5264 | |
5265 | if (pos < ZV) | |
7ab12479 | 5266 | { |
0c7da84e RS |
5267 | int this_scroll_margin = scroll_margin; |
5268 | ||
5269 | /* Don't use a scroll margin that is negative or too large. */ | |
5270 | if (this_scroll_margin < 0) | |
5271 | this_scroll_margin = 0; | |
5272 | ||
949cf20f KS |
5273 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5274 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5275 | |
b73ea88e | 5276 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5277 | w->start_at_line_beg = bolp; |
5278 | w->update_mode_line = Qt; | |
d834a2e9 | 5279 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5280 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5281 | /* Set force_start so that redisplay_window will run |
5282 | the window-scroll-functions. */ | |
5283 | w->force_start = Qt; | |
0c7da84e | 5284 | |
bdf4ec93 RS |
5285 | if (!NILP (Vscroll_preserve_screen_position) |
5286 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5287 | { |
b73ea88e | 5288 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5289 | Fvertical_motion (original_pos, window); |
0c7da84e | 5290 | } |
101d1605 RS |
5291 | /* If we scrolled forward, put point enough lines down |
5292 | that it is outside the scroll margin. */ | |
5293 | else if (n > 0) | |
0c7da84e | 5294 | { |
101d1605 RS |
5295 | int top_margin; |
5296 | ||
5297 | if (this_scroll_margin > 0) | |
5298 | { | |
b73ea88e | 5299 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5300 | Fvertical_motion (make_number (this_scroll_margin), window); |
5301 | top_margin = PT; | |
5302 | } | |
5303 | else | |
5304 | top_margin = pos; | |
5305 | ||
5306 | if (top_margin <= opoint) | |
b73ea88e | 5307 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5308 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5309 | { |
b73ea88e | 5310 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5311 | Fvertical_motion (original_pos, window); |
101d1605 | 5312 | } |
9317a85d | 5313 | else |
335406fc | 5314 | SET_PT (top_margin); |
0c7da84e | 5315 | } |
101d1605 | 5316 | else if (n < 0) |
7ab12479 | 5317 | { |
101d1605 RS |
5318 | int bottom_margin; |
5319 | ||
0c7da84e RS |
5320 | /* If we scrolled backward, put point near the end of the window |
5321 | but not within the scroll margin. */ | |
b73ea88e | 5322 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5323 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5324 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5325 | bottom_margin = PT; | |
5326 | else | |
5327 | bottom_margin = PT + 1; | |
5328 | ||
5329 | if (bottom_margin > opoint) | |
b73ea88e | 5330 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5331 | else |
101d1605 | 5332 | { |
5500c422 | 5333 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5334 | { |
b73ea88e | 5335 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5336 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5337 | } |
5338 | else | |
5339 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5340 | } |
7ab12479 JB |
5341 | } |
5342 | } | |
5343 | else | |
f8026fd8 JB |
5344 | { |
5345 | if (noerror) | |
5346 | return; | |
5347 | else | |
ba96a5cf | 5348 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5349 | } |
7ab12479 | 5350 | } |
5500c422 GM |
5351 | |
5352 | ||
5353 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5354 | screen-full which is defined as the height of the window minus | |
5355 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5356 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5357 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5358 | |
5359 | static void | |
5360 | scroll_command (n, direction) | |
5500c422 | 5361 | Lisp_Object n; |
7ab12479 JB |
5362 | int direction; |
5363 | { | |
331379bf | 5364 | int count = SPECPDL_INDEX (); |
7ab12479 | 5365 | |
1ea40aa2 | 5366 | xassert (eabs (direction) == 1); |
5500c422 GM |
5367 | |
5368 | /* If selected window's buffer isn't current, make it current for | |
5369 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5370 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5371 | { |
5372 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5373 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5374 | |
5375 | /* Make redisplay consider other windows than just selected_window. */ | |
5376 | ++windows_or_buffers_changed; | |
95605e15 | 5377 | } |
7ab12479 | 5378 | |
265a9e55 | 5379 | if (NILP (n)) |
d4e7cf01 | 5380 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5381 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5382 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5383 | else |
5384 | { | |
5385 | n = Fprefix_numeric_value (n); | |
101d1605 | 5386 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5387 | } |
95605e15 JB |
5388 | |
5389 | unbind_to (count, Qnil); | |
7ab12479 JB |
5390 | } |
5391 | ||
e0965597 | 5392 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5393 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5394 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5395 | A near full screen is `next-screen-context-lines' less than a full screen. |
5396 | Negative ARG means scroll downward. | |
5397 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5398 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5399 | (arg) | |
413430c5 | 5400 | Lisp_Object arg; |
7ab12479 | 5401 | { |
413430c5 | 5402 | scroll_command (arg, 1); |
7ab12479 JB |
5403 | return Qnil; |
5404 | } | |
5405 | ||
e0965597 | 5406 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5407 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5408 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5409 | A near full screen is `next-screen-context-lines' less than a full screen. |
5410 | Negative ARG means scroll upward. | |
5411 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5412 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5413 | (arg) | |
413430c5 | 5414 | Lisp_Object arg; |
7ab12479 | 5415 | { |
413430c5 | 5416 | scroll_command (arg, -1); |
7ab12479 JB |
5417 | return Qnil; |
5418 | } | |
ccd0664b RS |
5419 | \f |
5420 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5421 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5422 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5423 | showing that buffer is used. |
5424 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5425 | specifies the window. This takes precedence over | |
5426 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5427 | () |
7ab12479 | 5428 | { |
ccd0664b | 5429 | Lisp_Object window; |
7ab12479 JB |
5430 | |
5431 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5432 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5433 | window = Vminibuf_scroll_window; |
5434 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5435 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5436 | { |
5437 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5438 | if (NILP (window)) |
87478b52 | 5439 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5440 | } |
5441 | else | |
dbc4e1c1 JB |
5442 | { |
5443 | /* Nothing specified; look for a neighboring window on the same | |
5444 | frame. */ | |
5445 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5446 | ||
5447 | if (EQ (window, selected_window)) | |
5448 | /* That didn't get us anywhere; look for a window on another | |
5449 | visible frame. */ | |
5450 | do | |
5451 | window = Fnext_window (window, Qnil, Qt); | |
5452 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5453 | && ! EQ (window, selected_window)); | |
5454 | } | |
5455 | ||
b7826503 | 5456 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5457 | |
5458 | if (EQ (window, selected_window)) | |
5459 | error ("There is no other window"); | |
5460 | ||
ccd0664b RS |
5461 | return window; |
5462 | } | |
5463 | ||
5464 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5465 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5466 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5467 | The next window is the one below the current one; or the one at the top | |
5468 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5469 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5470 | When calling from a program, supply as argument a number, nil, or `-'. | |
5471 | ||
fdb82f93 | 5472 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5473 | showing that buffer, popping the buffer up if necessary. |
5474 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5475 | specifies the window to scroll. This takes precedence over | |
5476 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5477 | (arg) |
d4e7cf01 | 5478 | Lisp_Object arg; |
ccd0664b | 5479 | { |
d4e7cf01 GM |
5480 | Lisp_Object window; |
5481 | struct window *w; | |
331379bf | 5482 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5483 | |
5484 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5485 | w = XWINDOW (window); |
7ab12479 JB |
5486 | |
5487 | /* Don't screw up if window_scroll gets an error. */ | |
5488 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5489 | ++windows_or_buffers_changed; |
7ab12479 JB |
5490 | |
5491 | Fset_buffer (w->buffer); | |
5492 | SET_PT (marker_position (w->pointm)); | |
5493 | ||
413430c5 | 5494 | if (NILP (arg)) |
d4e7cf01 | 5495 | window_scroll (window, 1, 1, 1); |
413430c5 | 5496 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5497 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5498 | else |
5499 | { | |
413430c5 EN |
5500 | if (CONSP (arg)) |
5501 | arg = Fcar (arg); | |
b7826503 | 5502 | CHECK_NUMBER (arg); |
101d1605 | 5503 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5504 | } |
5505 | ||
b73ea88e | 5506 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5507 | unbind_to (count, Qnil); |
7ab12479 JB |
5508 | |
5509 | return Qnil; | |
5510 | } | |
5511 | \f | |
e0965597 | 5512 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5513 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5514 | Default for ARG is window width minus 2. |
5515 | Value is the total amount of leftward horizontal scrolling in | |
5516 | effect after the change. | |
23fe745a | 5517 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5518 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5519 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5520 | by this function. This happens in an interactive call. */) |
5521 | (arg, set_minimum) | |
5522 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5523 | { |
c67fa410 GM |
5524 | Lisp_Object result; |
5525 | int hscroll; | |
5526 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5527 | |
265a9e55 | 5528 | if (NILP (arg)) |
949cf20f | 5529 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5530 | else |
5531 | arg = Fprefix_numeric_value (arg); | |
5532 | ||
c67fa410 GM |
5533 | hscroll = XINT (w->hscroll) + XINT (arg); |
5534 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5535 | ||
dc297565 | 5536 | if (!NILP (set_minimum)) |
c67fa410 GM |
5537 | w->min_hscroll = w->hscroll; |
5538 | ||
5539 | return result; | |
7ab12479 JB |
5540 | } |
5541 | ||
e0965597 | 5542 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5543 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5544 | Default for ARG is window width minus 2. |
5545 | Value is the total amount of leftward horizontal scrolling in | |
5546 | effect after the change. | |
23fe745a | 5547 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5548 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5549 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5550 | by this function. This happens in an interactive call. */) |
5551 | (arg, set_minimum) | |
a93563fd | 5552 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5553 | { |
c67fa410 GM |
5554 | Lisp_Object result; |
5555 | int hscroll; | |
5556 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5557 | |
265a9e55 | 5558 | if (NILP (arg)) |
949cf20f | 5559 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5560 | else |
5561 | arg = Fprefix_numeric_value (arg); | |
5562 | ||
c67fa410 GM |
5563 | hscroll = XINT (w->hscroll) - XINT (arg); |
5564 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5565 | |
dc297565 | 5566 | if (!NILP (set_minimum)) |
c67fa410 GM |
5567 | w->min_hscroll = w->hscroll; |
5568 | ||
5569 | return result; | |
7ab12479 JB |
5570 | } |
5571 | ||
fa832261 KS |
5572 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5573 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5574 | Returns nil, if selected window is not a minibuffer window. */) |
fa832261 KS |
5575 | () |
5576 | { | |
5577 | if (minibuf_level > 0 | |
5578 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5579 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5580 | return minibuf_selected_window; | |
5581 | ||
5582 | return Qnil; | |
5583 | } | |
5584 | ||
12c8b416 GM |
5585 | /* Value is the number of lines actually displayed in window W, |
5586 | as opposed to its height. */ | |
5587 | ||
5588 | static int | |
5589 | displayed_window_lines (w) | |
5590 | struct window *w; | |
5591 | { | |
5592 | struct it it; | |
5593 | struct text_pos start; | |
5594 | int height = window_box_height (w); | |
5595 | struct buffer *old_buffer; | |
5596 | int bottom_y; | |
5597 | ||
5598 | if (XBUFFER (w->buffer) != current_buffer) | |
5599 | { | |
5600 | old_buffer = current_buffer; | |
5601 | set_buffer_internal (XBUFFER (w->buffer)); | |
5602 | } | |
5603 | else | |
5604 | old_buffer = NULL; | |
5605 | ||
521b203e GM |
5606 | /* In case W->start is out of the accessible range, do something |
5607 | reasonable. This happens in Info mode when Info-scroll-down | |
5608 | calls (recenter -1) while W->start is 1. */ | |
5609 | if (XMARKER (w->start)->charpos < BEGV) | |
5610 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5611 | else if (XMARKER (w->start)->charpos > ZV) | |
5612 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5613 | else | |
5614 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5615 | ||
12c8b416 GM |
5616 | start_display (&it, w, start); |
5617 | move_it_vertically (&it, height); | |
c8bc6f65 | 5618 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5619 | |
1de65f51 RS |
5620 | /* rms: On a non-window display, |
5621 | the value of it.vpos at the bottom of the screen | |
5622 | seems to be 1 larger than window_box_height (w). | |
5623 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5624 | when ZV is on the last screen line | |
5625 | moves to the previous screen line instead of the last one. */ | |
5626 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5627 | height++; | |
5628 | ||
12c8b416 GM |
5629 | /* Add in empty lines at the bottom of the window. */ |
5630 | if (bottom_y < height) | |
5631 | { | |
949cf20f | 5632 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5633 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5634 | } |
5635 | ||
c8bc6f65 GM |
5636 | if (old_buffer) |
5637 | set_buffer_internal (old_buffer); | |
5638 | ||
12c8b416 GM |
5639 | return it.vpos; |
5640 | } | |
5641 | ||
5642 | ||
7ab12479 | 5643 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5644 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5645 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5646 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5647 | bottom of the window. (ARG should be less than the height of the window.) |
5648 | ||
666e158e MB |
5649 | If ARG is omitted or nil, then recenter with point on the middle line of |
5650 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5651 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5652 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5653 | height needed); if `recenter-redisplay' has the special value `tty', | |
5654 | then only tty frame are redrawn. | |
7d1d98ee | 5655 | |
fdb82f93 PJ |
5656 | Just C-u as prefix means put point in the center of the window |
5657 | and redisplay normally--don't erase and redraw the frame. */) | |
5658 | (arg) | |
413430c5 | 5659 | register Lisp_Object arg; |
7ab12479 | 5660 | { |
6df47b59 | 5661 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5662 | struct buffer *buf = XBUFFER (w->buffer); |
5663 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5664 | int center_p = 0; |
5665 | int charpos, bytepos; | |
f6b43440 RS |
5666 | int iarg; |
5667 | int this_scroll_margin; | |
7ab12479 | 5668 | |
0fa5d25b RS |
5669 | /* If redisplay is suppressed due to an error, try again. */ |
5670 | obuf->display_error_modiff = 0; | |
5671 | ||
413430c5 | 5672 | if (NILP (arg)) |
7ab12479 | 5673 | { |
666e158e MB |
5674 | if (!NILP (Vrecenter_redisplay) |
5675 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5676 | || !NILP (Ftty_type (selected_frame)))) | |
5677 | { | |
5678 | int i; | |
f02d6d5c | 5679 | |
666e158e MB |
5680 | /* Invalidate pixel data calculated for all compositions. */ |
5681 | for (i = 0; i < n_compositions; i++) | |
5682 | composition_table[i]->font = NULL; | |
7ab12479 | 5683 | |
666e158e MB |
5684 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5685 | ||
5686 | Fredraw_frame (WINDOW_FRAME (w)); | |
5687 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5688 | } | |
7d1d98ee | 5689 | |
6df47b59 | 5690 | center_p = 1; |
7ab12479 | 5691 | } |
413430c5 | 5692 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5693 | center_p = 1; |
7ab12479 JB |
5694 | else |
5695 | { | |
413430c5 | 5696 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5697 | CHECK_NUMBER (arg); |
ae12ecd7 | 5698 | iarg = XINT (arg); |
7ab12479 JB |
5699 | } |
5700 | ||
478292ed | 5701 | set_buffer_internal (buf); |
7ab12479 | 5702 | |
f6b43440 RS |
5703 | /* Do this after making BUF current |
5704 | in case scroll_margin is buffer-local. */ | |
5705 | this_scroll_margin = max (0, scroll_margin); | |
5706 | this_scroll_margin = min (this_scroll_margin, | |
5707 | XFASTINT (w->total_lines) / 4); | |
5708 | ||
521b203e | 5709 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5710 | have variable-height lines and centering point on the basis of |
5711 | line counts would lead to strange effects. */ | |
521b203e | 5712 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5713 | { |
6df47b59 GM |
5714 | if (center_p) |
5715 | { | |
521b203e GM |
5716 | struct it it; |
5717 | struct text_pos pt; | |
177c0ea7 | 5718 | |
521b203e GM |
5719 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5720 | start_display (&it, w, pt); | |
f204989e | 5721 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5722 | charpos = IT_CHARPOS (it); |
5723 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5724 | } |
f6b43440 | 5725 | else if (iarg < 0) |
6df47b59 | 5726 | { |
521b203e GM |
5727 | struct it it; |
5728 | struct text_pos pt; | |
f6b43440 | 5729 | int nlines = -iarg; |
f204989e KS |
5730 | int extra_line_spacing; |
5731 | int h = window_box_height (w); | |
177c0ea7 | 5732 | |
f6b43440 RS |
5733 | iarg = - max (-iarg, this_scroll_margin); |
5734 | ||
521b203e GM |
5735 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5736 | start_display (&it, w, pt); | |
f204989e KS |
5737 | |
5738 | /* Be sure we have the exact height of the full line containing PT. */ | |
5739 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5740 | |
d466fa4d | 5741 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5742 | height minus what's displayed in the line containing PT, |
5743 | and the lines below. */ | |
f204989e KS |
5744 | it.current_y = 0; |
5745 | it.vpos = 0; | |
d466fa4d GM |
5746 | move_it_by_lines (&it, nlines, 1); |
5747 | ||
f204989e KS |
5748 | if (it.vpos == nlines) |
5749 | h -= it.current_y; | |
5750 | else | |
5751 | { | |
5752 | /* Last line has no newline */ | |
5753 | h -= line_bottom_y (&it); | |
5754 | it.vpos++; | |
5755 | } | |
5756 | ||
5757 | /* Don't reserve space for extra line spacing of last line. */ | |
5758 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5759 | |
5760 | /* If we can't move down NLINES lines because we hit | |
5761 | the end of the buffer, count in some empty lines. */ | |
5762 | if (it.vpos < nlines) | |
f204989e KS |
5763 | { |
5764 | nlines -= it.vpos; | |
5765 | extra_line_spacing = it.extra_line_spacing; | |
5766 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5767 | } | |
5768 | if (h <= 0) | |
5769 | return Qnil; | |
201c831a | 5770 | |
f204989e | 5771 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5772 | start_display (&it, w, pt); |
f204989e KS |
5773 | it.current_y = 0; |
5774 | move_it_vertically_backward (&it, h); | |
5775 | ||
5776 | /* If extra line spacing is present, we may move too far | |
5777 | back. This causes the last line to be only partially | |
5778 | visible (which triggers redisplay to recenter that line | |
5779 | in the middle), so move forward. | |
5780 | But ignore extra line spacing on last line, as it is not | |
5781 | considered to be part of the visible height of the line. | |
5782 | */ | |
5783 | h += extra_line_spacing; | |
5784 | while (-it.current_y > h) | |
5785 | move_it_by_lines (&it, 1, 1); | |
5786 | ||
521b203e GM |
5787 | charpos = IT_CHARPOS (it); |
5788 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5789 | } |
521b203e GM |
5790 | else |
5791 | { | |
5792 | struct position pos; | |
f6b43440 | 5793 | |
f6b43440 RS |
5794 | iarg = max (iarg, this_scroll_margin); |
5795 | ||
5796 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5797 | charpos = pos.bufpos; |
5798 | bytepos = pos.bytepos; | |
5799 | } | |
5800 | } | |
5801 | else | |
5802 | { | |
5803 | struct position pos; | |
5804 | int ht = window_internal_height (w); | |
5805 | ||
5806 | if (center_p) | |
a4429c5b | 5807 | iarg = ht / 2; |
f567c488 KS |
5808 | else if (iarg < 0) |
5809 | iarg += ht; | |
f6b43440 RS |
5810 | |
5811 | /* Don't let it get into the margin at either top or bottom. */ | |
5812 | iarg = max (iarg, this_scroll_margin); | |
5813 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5814 | |
f6b43440 | 5815 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5816 | charpos = pos.bufpos; |
5817 | bytepos = pos.bytepos; | |
5818 | } | |
5819 | ||
5820 | /* Set the new window start. */ | |
5821 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5822 | w->window_end_valid = Qnil; |
177c0ea7 | 5823 | |
95605b1b RS |
5824 | w->optional_new_start = Qt; |
5825 | ||
6df47b59 GM |
5826 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5827 | w->start_at_line_beg = Qt; | |
5828 | else | |
5829 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5830 | |
478292ed | 5831 | set_buffer_internal (obuf); |
7ab12479 JB |
5832 | return Qnil; |
5833 | } | |
b7617575 GM |
5834 | |
5835 | ||
81fe0836 | 5836 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5837 | 0, 1, 0, |
5838 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5839 | WINDOW defaults to the selected window. |
8fef9de1 | 5840 | |
f039b2d2 CY |
5841 | The return value does not include the mode line, any header line, nor |
5842 | any partial-height lines in the text display area. */) | |
fdb82f93 | 5843 | (window) |
81fe0836 MB |
5844 | Lisp_Object window; |
5845 | { | |
5846 | struct window *w = decode_window (window); | |
5847 | int pixel_height = window_box_height (w); | |
949cf20f | 5848 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5849 | return make_number (line_height); |
5850 | } | |
5851 | ||
5852 | ||
7ab12479 JB |
5853 | \f |
5854 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5855 | 1, 1, "P", |
5856 | doc: /* Position point relative to window. | |
5857 | With no argument, position point at center of window. | |
5858 | An argument specifies vertical position within the window; | |
5859 | zero means top of window, negative means relative to bottom of window. */) | |
5860 | (arg) | |
b7617575 | 5861 | Lisp_Object arg; |
7ab12479 | 5862 | { |
b7617575 GM |
5863 | struct window *w = XWINDOW (selected_window); |
5864 | int lines, start; | |
540b6aa0 | 5865 | Lisp_Object window; |
f6b43440 RS |
5866 | #if 0 |
5867 | int this_scroll_margin; | |
5868 | #endif | |
7ab12479 | 5869 | |
794b75c7 SM |
5870 | if (!(BUFFERP (w->buffer) |
5871 | && XBUFFER (w->buffer) == current_buffer)) | |
5872 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer | |
5873 | when passed below to set_marker_both. */ | |
5874 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5875 | |
b7617575 | 5876 | window = selected_window; |
7ab12479 JB |
5877 | start = marker_position (w->start); |
5878 | if (start < BEGV || start > ZV) | |
5879 | { | |
b7617575 | 5880 | int height = window_internal_height (w); |
cd2be1dd | 5881 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5882 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5883 | w->start_at_line_beg = Fbolp (); |
5884 | w->force_start = Qt; | |
5885 | } | |
5886 | else | |
b73ea88e | 5887 | Fgoto_char (w->start); |
7ab12479 | 5888 | |
b7617575 | 5889 | lines = displayed_window_lines (w); |
f6b43440 RS |
5890 | |
5891 | #if 0 | |
5892 | this_scroll_margin = max (0, scroll_margin); | |
5893 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5894 | #endif | |
5895 | ||
b7617575 GM |
5896 | if (NILP (arg)) |
5897 | XSETFASTINT (arg, lines / 2); | |
5898 | else | |
5899 | { | |
f6b43440 RS |
5900 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5901 | ||
5902 | if (iarg < 0) | |
5903 | iarg = iarg + lines; | |
5904 | ||
5905 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5906 | to a place inside the scroll margins (which would cause the | |
5907 | next redisplay to scroll). I wrote this code, but then concluded | |
5908 | it is probably better not to install it. However, it is here | |
5909 | inside #if 0 so as not to lose it. -- rms. */ | |
5910 | ||
5911 | /* Don't let it get into the margin at either top or bottom. */ | |
5912 | iarg = max (iarg, this_scroll_margin); | |
5913 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5914 | #endif | |
5915 | ||
5916 | arg = make_number (iarg); | |
b7617575 GM |
5917 | } |
5918 | ||
c8bc6f65 | 5919 | /* Skip past a partially visible first line. */ |
163784df | 5920 | if (w->vscroll) |
163784df MB |
5921 | XSETINT (arg, XINT (arg) + 1); |
5922 | ||
540b6aa0 | 5923 | return Fvertical_motion (arg, window); |
7ab12479 | 5924 | } |
5500c422 GM |
5925 | |
5926 | ||
7ab12479 | 5927 | \f |
5500c422 GM |
5928 | /*********************************************************************** |
5929 | Window Configuration | |
5930 | ***********************************************************************/ | |
5931 | ||
7ab12479 JB |
5932 | struct save_window_data |
5933 | { | |
14fe7b53 | 5934 | struct vectorlike_header header; |
bdc727bf | 5935 | Lisp_Object selected_frame; |
7ab12479 JB |
5936 | Lisp_Object current_window; |
5937 | Lisp_Object current_buffer; | |
5938 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5939 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5940 | Lisp_Object root_window; |
bdc727bf | 5941 | Lisp_Object focus_frame; |
cbff28e8 RS |
5942 | /* A vector, each of whose elements is a struct saved_window |
5943 | for one window. */ | |
7ab12479 | 5944 | Lisp_Object saved_windows; |
b05b4e27 SM |
5945 | |
5946 | /* All fields above are traced by the GC. | |
5947 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5948 | ||
5949 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5950 | int frame_tool_bar_lines; | |
7ab12479 | 5951 | }; |
ff06df24 | 5952 | |
cbff28e8 | 5953 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5954 | struct saved_window |
ea68264b | 5955 | { |
14fe7b53 | 5956 | struct vectorlike_header header; |
ea68264b GM |
5957 | Lisp_Object window; |
5958 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5959 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5960 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5961 | Lisp_Object parent, prev; |
5962 | Lisp_Object start_at_line_beg; | |
5963 | Lisp_Object display_table; | |
949cf20f KS |
5964 | Lisp_Object orig_top_line, orig_total_lines; |
5965 | Lisp_Object left_margin_cols, right_margin_cols; | |
5966 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5967 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 5968 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
5969 | }; |
5970 | ||
7ab12479 JB |
5971 | #define SAVED_WINDOW_N(swv,n) \ |
5972 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5973 | ||
5974 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
5975 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5976 | (object) | |
413430c5 | 5977 | Lisp_Object object; |
7ab12479 | 5978 | { |
6ad0381c | 5979 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5980 | } |
5981 | ||
3f8ab7bd | 5982 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
5983 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5984 | (config) | |
3f8ab7bd RS |
5985 | Lisp_Object config; |
5986 | { | |
5987 | register struct save_window_data *data; | |
5988 | struct Lisp_Vector *saved_windows; | |
5989 | ||
663fbbba | 5990 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5991 | |
5992 | data = (struct save_window_data *) XVECTOR (config); | |
5993 | saved_windows = XVECTOR (data->saved_windows); | |
5994 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5995 | } | |
5996 | ||
d5b2799e | 5997 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5998 | Sset_window_configuration, 1, 1, 0, |
5999 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6000 | CONFIGURATION must be a value previously returned | |
6001 | by `current-window-configuration' (which see). | |
6002 | If CONFIGURATION was made from a frame that is now deleted, | |
6003 | only frame-independent values can be restored. In this case, | |
6004 | the return value is nil. Otherwise the value is t. */) | |
6005 | (configuration) | |
2f83aebe | 6006 | Lisp_Object configuration; |
7ab12479 | 6007 | { |
7ab12479 JB |
6008 | register struct save_window_data *data; |
6009 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6010 | Lisp_Object new_current_buffer; |
fd482be5 | 6011 | Lisp_Object frame; |
44fa5b1e | 6012 | FRAME_PTR f; |
72695e47 | 6013 | int old_point = -1; |
7ab12479 | 6014 | |
663fbbba | 6015 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6016 | |
2f83aebe | 6017 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6018 | saved_windows = XVECTOR (data->saved_windows); |
6019 | ||
7ab12479 | 6020 | new_current_buffer = data->current_buffer; |
265a9e55 | 6021 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6022 | new_current_buffer = Qnil; |
72695e47 | 6023 | else |
73cadfc1 DK |
6024 | { |
6025 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6026 | /* The code further down "preserves point" by saving here PT in |
6027 | old_point and then setting it later back into PT. When the | |
6028 | current-selected-window and the final-selected-window both show | |
6029 | the current buffer, this suffers from the problem that the | |
6030 | current PT is the window-point of the current-selected-window, | |
6031 | while the final PT is the point of the final-selected-window, so | |
6032 | this copy from one PT to the other would end up moving the | |
6033 | window-point of the final-selected-window to the window-point of | |
6034 | the current-selected-window. So we have to be careful which | |
6035 | point of the current-buffer we copy into old_point. */ | |
6036 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6037 | && WINDOWP (selected_window) | |
6038 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6039 | && !EQ (selected_window, data->current_window)) | |
6040 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6041 | else | |
6042 | old_point = PT; | |
73cadfc1 | 6043 | else |
203eb0aa SM |
6044 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6045 | point in new_current_buffer as of the last time this buffer was | |
6046 | used. This can be non-deterministic since it can be changed by | |
6047 | things like jit-lock by mere temporary selection of some random | |
6048 | window that happens to show this buffer. | |
6049 | So if possible we want this arbitrary choice of "which point" to | |
6050 | be the one from the to-be-selected-window so as to prevent this | |
6051 | window's cursor from being copied from another window. */ | |
6052 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6053 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6054 | && !EQ (selected_window, data->current_window)) | |
6055 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6056 | else | |
6057 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6058 | } |
7ab12479 | 6059 | |
fd482be5 JB |
6060 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6061 | f = XFRAME (frame); | |
177c0ea7 | 6062 | |
fd482be5 JB |
6063 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6064 | However, there is other stuff we should still try to do below. */ | |
6065 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6066 | { |
fd482be5 JB |
6067 | register struct window *w; |
6068 | register struct saved_window *p; | |
5500c422 GM |
6069 | struct window *root_window; |
6070 | struct window **leaf_windows; | |
6071 | int n_leaf_windows; | |
c4280705 | 6072 | int k, i, n; |
fd482be5 JB |
6073 | |
6074 | /* If the frame has been resized since this window configuration was | |
6075 | made, we change the frame to the size specified in the | |
6076 | configuration, restore the configuration, and then resize it | |
6077 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6078 | int previous_frame_lines = FRAME_LINES (f); |
6079 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6080 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6081 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6082 | |
d2b35234 RS |
6083 | /* The mouse highlighting code could get screwed up |
6084 | if it runs during this. */ | |
6085 | BLOCK_INPUT; | |
6086 | ||
b05b4e27 SM |
6087 | if (data->frame_lines != previous_frame_lines |
6088 | || data->frame_cols != previous_frame_cols) | |
6089 | change_frame_size (f, data->frame_lines, | |
6090 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 6091 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 6092 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 6093 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
6094 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6095 | make_number (0)); | |
4314246f | 6096 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6097 | if (data->frame_tool_bar_lines |
9ea173e8 | 6098 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6099 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6100 | make_number (0)); | |
4314246f | 6101 | #endif |
217f2871 | 6102 | #endif |
fd482be5 | 6103 | |
a46c0153 RS |
6104 | /* "Swap out" point from the selected window's buffer |
6105 | into the window itself. (Normally the pointm of the selected | |
6106 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6107 | restoring the window contents, and prevent it from |
6108 | being done later on when we select a new window. */ | |
596ae0cf RS |
6109 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6110 | { | |
6111 | w = XWINDOW (selected_window); | |
6112 | set_marker_both (w->pointm, | |
6113 | w->buffer, | |
6114 | BUF_PT (XBUFFER (w->buffer)), | |
6115 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6116 | } | |
6117 | ||
fd482be5 | 6118 | windows_or_buffers_changed++; |
29aeee73 | 6119 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6120 | |
5500c422 | 6121 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6122 | is a serious redisplay flickering problem. What we would |
5500c422 | 6123 | really like to do is to free only those matrices not reused |
9d14503e | 6124 | below. */ |
5500c422 GM |
6125 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
6126 | leaf_windows | |
6127 | = (struct window **) alloca (count_windows (root_window) | |
6128 | * sizeof (struct window *)); | |
6129 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6130 | ||
fd482be5 JB |
6131 | /* Kludge Alert! |
6132 | Mark all windows now on frame as "deleted". | |
6133 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6134 | |
fd482be5 JB |
6135 | Save their current buffers in their height fields, since we may |
6136 | need it later, if a buffer saved in the configuration is now | |
6137 | dead. */ | |
6138 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6139 | ||
14fe7b53 | 6140 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
6141 | { |
6142 | p = SAVED_WINDOW_N (saved_windows, k); | |
6143 | w = XWINDOW (p->window); | |
6144 | w->next = Qnil; | |
7ab12479 | 6145 | |
fd482be5 JB |
6146 | if (!NILP (p->parent)) |
6147 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6148 | XFASTINT (p->parent))->window; | |
6149 | else | |
6150 | w->parent = Qnil; | |
7ab12479 | 6151 | |
fd482be5 | 6152 | if (!NILP (p->prev)) |
7ab12479 | 6153 | { |
fd482be5 JB |
6154 | w->prev = SAVED_WINDOW_N (saved_windows, |
6155 | XFASTINT (p->prev))->window; | |
6156 | XWINDOW (w->prev)->next = p->window; | |
6157 | } | |
6158 | else | |
6159 | { | |
6160 | w->prev = Qnil; | |
6161 | if (!NILP (w->parent)) | |
6162 | { | |
949cf20f | 6163 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6164 | { |
6165 | XWINDOW (w->parent)->vchild = p->window; | |
6166 | XWINDOW (w->parent)->hchild = Qnil; | |
6167 | } | |
6168 | else | |
6169 | { | |
6170 | XWINDOW (w->parent)->hchild = p->window; | |
6171 | XWINDOW (w->parent)->vchild = Qnil; | |
6172 | } | |
6173 | } | |
6174 | } | |
6175 | ||
6176 | /* If we squirreled away the buffer in the window's height, | |
6177 | restore it now. */ | |
949cf20f KS |
6178 | if (BUFFERP (w->total_lines)) |
6179 | w->buffer = w->total_lines; | |
6180 | w->left_col = p->left_col; | |
6181 | w->top_line = p->top_line; | |
6182 | w->total_cols = p->total_cols; | |
6183 | w->total_lines = p->total_lines; | |
fd482be5 | 6184 | w->hscroll = p->hscroll; |
ea68264b | 6185 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6186 | w->display_table = p->display_table; |
949cf20f KS |
6187 | w->orig_top_line = p->orig_top_line; |
6188 | w->orig_total_lines = p->orig_total_lines; | |
6189 | w->left_margin_cols = p->left_margin_cols; | |
6190 | w->right_margin_cols = p->right_margin_cols; | |
6191 | w->left_fringe_width = p->left_fringe_width; | |
6192 | w->right_fringe_width = p->right_fringe_width; | |
6193 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6194 | w->scroll_bar_width = p->scroll_bar_width; | |
6195 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6196 | w->dedicated = p->dedicated; |
047aaeb9 | 6197 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6198 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6199 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6200 | |
6201 | /* Reinstall the saved buffer and pointers into it. */ | |
6202 | if (NILP (p->buffer)) | |
6203 | w->buffer = p->buffer; | |
6204 | else | |
6205 | { | |
6206 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6207 | /* If saved buffer is alive, install it. */ | |
6208 | { | |
6209 | w->buffer = p->buffer; | |
6210 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6211 | set_marker_restricted (w->start, p->start, w->buffer); |
6212 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6213 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6214 | p->mark, w->buffer); |
fd482be5 JB |
6215 | |
6216 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6217 | restore the location of point in the buffer which was |
6218 | current when the window configuration was recorded. */ | |
6b54027b RS |
6219 | if (!EQ (p->buffer, new_current_buffer) |
6220 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6221 | Fgoto_char (w->pointm); |
6222 | } | |
52a68e98 RS |
6223 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6224 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6225 | { |
fd482be5 JB |
6226 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6227 | /* This will set the markers to beginning of visible | |
6228 | range. */ | |
6229 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6230 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6231 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6232 | } |
6233 | else | |
fd482be5 | 6234 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6235 | are real. */ |
7ab12479 | 6236 | { |
fd482be5 JB |
6237 | /* Set window markers at start of visible range. */ |
6238 | if (XMARKER (w->start)->buffer == 0) | |
6239 | set_marker_restricted (w->start, make_number (0), | |
6240 | w->buffer); | |
6241 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6242 | set_marker_restricted_both (w->pointm, w->buffer, |
6243 | BUF_PT (XBUFFER (w->buffer)), | |
6244 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6245 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6246 | } |
6247 | } | |
6248 | } | |
9ace597f | 6249 | |
fd482be5 | 6250 | FRAME_ROOT_WINDOW (f) = data->root_window; |
a46c0153 RS |
6251 | |
6252 | /* Arrange *not* to restore point in the buffer that was | |
6253 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6254 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6255 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6256 | make_number (old_point), |
243a5ce6 | 6257 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6258 | |
6dc1d2d3 MR |
6259 | /* In the following call to `select-window, prevent "swapping |
6260 | out point" in the old selected window using the buffer that | |
6261 | has been restored into it. We already swapped out that point | |
6262 | from that window's old buffer. */ | |
e6b84b30 | 6263 | select_window (data->current_window, Qnil, 1); |
396a830c RS |
6264 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6265 | = selected_window; | |
7ab12479 | 6266 | |
db269683 | 6267 | if (NILP (data->focus_frame) |
017b2bad | 6268 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6269 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6270 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6271 | |
fd482be5 | 6272 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
6273 | if (previous_frame_lines != FRAME_LINES (f) |
6274 | || previous_frame_cols != FRAME_COLS (f)) | |
6275 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6276 | 0, 0, 0); |
e3678b64 | 6277 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6278 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6279 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6280 | make_number (0)); | |
4314246f | 6281 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6282 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6283 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6284 | make_number (0)); | |
4314246f | 6285 | #endif |
217f2871 | 6286 | #endif |
d2b35234 | 6287 | |
5500c422 | 6288 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6289 | for (i = n = 0; i < n_leaf_windows; ++i) |
6290 | { | |
6291 | if (NILP (leaf_windows[i]->buffer)) | |
6292 | { | |
6293 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6294 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6295 | && NILP (leaf_windows[i]->vchild)); |
6296 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6297 | } |
6298 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6299 | ++n; | |
6300 | } | |
177c0ea7 | 6301 | |
5500c422 GM |
6302 | adjust_glyphs (f); |
6303 | ||
d2b35234 | 6304 | UNBLOCK_INPUT; |
756b6edc | 6305 | |
478292ed RS |
6306 | /* Fselect_window will have made f the selected frame, so we |
6307 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6308 | selected window too, but that doesn't make the call to | |
6309 | Fselect_window above totally superfluous; it still sets f's | |
6310 | selected window. */ | |
6311 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6312 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6313 | |
eeca6f6f | 6314 | run_window_configuration_change_hook (f); |
478292ed | 6315 | } |
bdc727bf JB |
6316 | |
6317 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6318 | Fset_buffer (new_current_buffer); |
bdc727bf | 6319 | |
478292ed | 6320 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6321 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6322 | |
3f8ab7bd | 6323 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6324 | } |
6325 | ||
44fa5b1e | 6326 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6327 | by setting their buffers to nil. */ |
6328 | ||
fd482be5 | 6329 | void |
7ab12479 JB |
6330 | delete_all_subwindows (w) |
6331 | register struct window *w; | |
6332 | { | |
265a9e55 | 6333 | if (!NILP (w->next)) |
7ab12479 | 6334 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6335 | if (!NILP (w->vchild)) |
7ab12479 | 6336 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6337 | if (!NILP (w->hchild)) |
7ab12479 | 6338 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6339 | |
949cf20f | 6340 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6341 | |
86e48436 RS |
6342 | if (!NILP (w->buffer)) |
6343 | unshow_buffer (w); | |
6344 | ||
605be8af JB |
6345 | /* We set all three of these fields to nil, to make sure that we can |
6346 | distinguish this dead window from any live window. Live leaf | |
6347 | windows will have buffer set, and combination windows will have | |
6348 | vchild or hchild set. */ | |
6349 | w->buffer = Qnil; | |
6350 | w->vchild = Qnil; | |
6351 | w->hchild = Qnil; | |
acf70840 GM |
6352 | |
6353 | Vwindow_list = Qnil; | |
7ab12479 JB |
6354 | } |
6355 | \f | |
6356 | static int | |
6357 | count_windows (window) | |
6358 | register struct window *window; | |
6359 | { | |
6360 | register int count = 1; | |
265a9e55 | 6361 | if (!NILP (window->next)) |
7ab12479 | 6362 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6363 | if (!NILP (window->vchild)) |
7ab12479 | 6364 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6365 | if (!NILP (window->hchild)) |
7ab12479 JB |
6366 | count += count_windows (XWINDOW (window->hchild)); |
6367 | return count; | |
6368 | } | |
6369 | ||
5500c422 | 6370 | |
177c0ea7 | 6371 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6372 | Value is last index + 1. */ |
6373 | ||
6374 | static int | |
6375 | get_leaf_windows (w, flat, i) | |
6376 | struct window *w; | |
6377 | struct window **flat; | |
6378 | int i; | |
6379 | { | |
6380 | while (w) | |
6381 | { | |
6382 | if (!NILP (w->hchild)) | |
6383 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6384 | else if (!NILP (w->vchild)) | |
6385 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6386 | else |
5500c422 GM |
6387 | flat[i++] = w; |
6388 | ||
6389 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6390 | } | |
6391 | ||
6392 | return i; | |
6393 | } | |
6394 | ||
6395 | ||
6396 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6397 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6398 | can be returned. */ | |
6399 | ||
6400 | struct glyph * | |
6401 | get_phys_cursor_glyph (w) | |
6402 | struct window *w; | |
6403 | { | |
6404 | struct glyph_row *row; | |
6405 | struct glyph *glyph; | |
6406 | ||
6407 | if (w->phys_cursor.vpos >= 0 | |
6408 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6409 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6410 | row->enabled_p) | |
6411 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6412 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6413 | else | |
6414 | glyph = NULL; | |
6415 | ||
6416 | return glyph; | |
6417 | } | |
6418 | ||
6419 | ||
7ab12479 JB |
6420 | static int |
6421 | save_window_save (window, vector, i) | |
6422 | Lisp_Object window; | |
6423 | struct Lisp_Vector *vector; | |
6424 | int i; | |
6425 | { | |
6426 | register struct saved_window *p; | |
6427 | register struct window *w; | |
6428 | register Lisp_Object tem; | |
6429 | ||
265a9e55 | 6430 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6431 | { |
6432 | p = SAVED_WINDOW_N (vector, i); | |
6433 | w = XWINDOW (window); | |
6434 | ||
2a1893f4 | 6435 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6436 | p->window = window; |
6437 | p->buffer = w->buffer; | |
949cf20f KS |
6438 | p->left_col = w->left_col; |
6439 | p->top_line = w->top_line; | |
6440 | p->total_cols = w->total_cols; | |
6441 | p->total_lines = w->total_lines; | |
7ab12479 | 6442 | p->hscroll = w->hscroll; |
ea68264b | 6443 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6444 | p->display_table = w->display_table; |
949cf20f KS |
6445 | p->orig_top_line = w->orig_top_line; |
6446 | p->orig_total_lines = w->orig_total_lines; | |
6447 | p->left_margin_cols = w->left_margin_cols; | |
6448 | p->right_margin_cols = w->right_margin_cols; | |
6449 | p->left_fringe_width = w->left_fringe_width; | |
6450 | p->right_fringe_width = w->right_fringe_width; | |
6451 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6452 | p->scroll_bar_width = w->scroll_bar_width; | |
6453 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6454 | p->dedicated = w->dedicated; |
047aaeb9 | 6455 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6456 | if (!NILP (w->buffer)) |
7ab12479 JB |
6457 | { |
6458 | /* Save w's value of point in the window configuration. | |
6459 | If w is the selected window, then get the value of point | |
6460 | from the buffer; pointm is garbage in the selected window. */ | |
6461 | if (EQ (window, selected_window)) | |
6462 | { | |
6463 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6464 | set_marker_both (p->pointm, w->buffer, |
6465 | BUF_PT (XBUFFER (w->buffer)), | |
6466 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6467 | } |
6468 | else | |
eeb82665 | 6469 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6470 | |
eeb82665 | 6471 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6472 | p->start_at_line_beg = w->start_at_line_beg; |
6473 | ||
6474 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6475 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6476 | } |
6477 | else | |
6478 | { | |
6479 | p->pointm = Qnil; | |
6480 | p->start = Qnil; | |
6481 | p->mark = Qnil; | |
6482 | p->start_at_line_beg = Qnil; | |
6483 | } | |
6484 | ||
265a9e55 | 6485 | if (NILP (w->parent)) |
7ab12479 JB |
6486 | p->parent = Qnil; |
6487 | else | |
6488 | p->parent = XWINDOW (w->parent)->temslot; | |
6489 | ||
265a9e55 | 6490 | if (NILP (w->prev)) |
7ab12479 JB |
6491 | p->prev = Qnil; |
6492 | else | |
6493 | p->prev = XWINDOW (w->prev)->temslot; | |
6494 | ||
265a9e55 | 6495 | if (!NILP (w->vchild)) |
7ab12479 | 6496 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6497 | if (!NILP (w->hchild)) |
7ab12479 JB |
6498 | i = save_window_save (w->hchild, vector, i); |
6499 | } | |
6500 | ||
6501 | return i; | |
6502 | } | |
6503 | ||
a0d76c27 | 6504 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6505 | Scurrent_window_configuration, 0, 1, 0, |
6506 | doc: /* Return an object representing the current window configuration of FRAME. | |
6507 | If FRAME is nil or omitted, use the selected frame. | |
6508 | This describes the number of windows, their sizes and current buffers, | |
6509 | and for each displayed buffer, where display starts, and the positions of | |
6510 | point and mark. An exception is made for point in the current buffer: | |
6511 | its value is -not- saved. | |
6512 | This also records the currently selected frame, and FRAME's focus | |
6513 | redirection (see `redirect-frame-focus'). */) | |
6514 | (frame) | |
44fa5b1e | 6515 | Lisp_Object frame; |
7ab12479 JB |
6516 | { |
6517 | register Lisp_Object tem; | |
6518 | register int n_windows; | |
6519 | register struct save_window_data *data; | |
6520 | register int i; | |
44fa5b1e | 6521 | FRAME_PTR f; |
43bad991 | 6522 | |
44fa5b1e | 6523 | if (NILP (frame)) |
1ae1a37d | 6524 | frame = selected_frame; |
b7826503 | 6525 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6526 | f = XFRAME (frame); |
7ab12479 | 6527 | |
44fa5b1e | 6528 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6529 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6530 | PVEC_WINDOW_CONFIGURATION); | |
6531 | ||
6532 | data->frame_cols = FRAME_COLS (f); | |
6533 | data->frame_lines = FRAME_LINES (f); | |
6534 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6535 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6536 | data->selected_frame = selected_frame; |
44fa5b1e | 6537 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6538 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6539 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6540 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6541 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6542 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6543 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6544 | data->saved_windows = tem; | |
6545 | for (i = 0; i < n_windows; i++) | |
6546 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6547 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6548 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6549 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6550 | return (tem); |
6551 | } | |
6552 | ||
6553 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6554 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6555 | doc: /* Execute BODY, preserving window sizes and contents. |
6556 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6557 | Restore which buffer appears in which window, where display starts, |
6558 | and the value of point and mark for each window. | |
6559 | Also restore the choice of selected window. | |
6560 | Also restore which buffer is current. | |
6924dda6 | 6561 | Does not restore the value of point in current buffer. |
7254a30c | 6562 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6563 | (args) |
7ab12479 JB |
6564 | Lisp_Object args; |
6565 | { | |
6566 | register Lisp_Object val; | |
aed13378 | 6567 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6568 | |
6569 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6570 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6571 | val = Fprogn (args); |
6572 | return unbind_to (count, val); | |
6573 | } | |
5500c422 | 6574 | |
94e16dd5 KS |
6575 | |
6576 | \f | |
6577 | /*********************************************************************** | |
6578 | Window Split Tree | |
6579 | ***********************************************************************/ | |
6580 | ||
6581 | static Lisp_Object | |
c16e1cc3 | 6582 | window_tree (w) |
94e16dd5 KS |
6583 | struct window *w; |
6584 | { | |
6585 | Lisp_Object tail = Qnil; | |
6586 | Lisp_Object result = Qnil; | |
6587 | ||
6588 | while (w) | |
6589 | { | |
6590 | Lisp_Object wn; | |
6591 | ||
6592 | XSETWINDOW (wn, w); | |
6593 | if (!NILP (w->hchild)) | |
6594 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6595 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6596 | else if (!NILP (w->vchild)) |
6597 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6598 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6599 | |
6600 | if (NILP (result)) | |
6601 | { | |
6602 | result = tail = Fcons (wn, Qnil); | |
6603 | } | |
6604 | else | |
6605 | { | |
6606 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6607 | tail = XCDR (tail); | |
6608 | } | |
6609 | ||
6610 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6611 | } | |
6612 | ||
6613 | return result; | |
6614 | } | |
6615 | ||
6616 | ||
6617 | ||
c16e1cc3 | 6618 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6619 | 0, 1, 0, |
c16e1cc3 | 6620 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6621 | |
6622 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6623 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6624 | is the frame's minibuffer window. |
6625 | ||
6626 | If the root window is not split, ROOT is the root window itself. | |
6627 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6628 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6629 | size and position of the subwindows in the split, and the rest of the |
6630 | elements are the subwindows in the split. Each of the subwindows may | |
6631 | again be a window or a list representing a window split, and so on. | |
6632 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6633 | ||
6634 | If FRAME is nil or omitted, return information on the currently | |
6635 | selected frame. */) | |
6636 | (frame) | |
6637 | Lisp_Object frame; | |
6638 | { | |
94e16dd5 KS |
6639 | FRAME_PTR f; |
6640 | ||
6641 | if (NILP (frame)) | |
6642 | frame = selected_frame; | |
6643 | ||
6644 | CHECK_FRAME (frame); | |
6645 | f = XFRAME (frame); | |
6646 | ||
6647 | if (!FRAME_LIVE_P (f)) | |
6648 | return Qnil; | |
6649 | ||
c16e1cc3 | 6650 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6651 | } |
6652 | ||
5500c422 GM |
6653 | \f |
6654 | /*********************************************************************** | |
6655 | Marginal Areas | |
6656 | ***********************************************************************/ | |
6657 | ||
6658 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6659 | 2, 3, 0, |
fdb82f93 | 6660 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6661 | If WINDOW is nil, set margins of the currently selected window. |
6662 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6663 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6664 | does the same for the right marginal area. A nil width parameter | |
6665 | means no margin. */) | |
c10ce82e JB |
6666 | (window, left_width, right_width) |
6667 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6668 | { |
6669 | struct window *w = decode_window (window); | |
5500c422 | 6670 | |
6b61353c KH |
6671 | /* Translate negative or zero widths to nil. |
6672 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6673 | |
c10ce82e | 6674 | if (!NILP (left_width)) |
6b61353c | 6675 | { |
c10ce82e JB |
6676 | CHECK_NUMBER (left_width); |
6677 | if (XINT (left_width) <= 0) | |
6678 | left_width = Qnil; | |
6b61353c | 6679 | } |
5500c422 | 6680 | |
c10ce82e | 6681 | if (!NILP (right_width)) |
6b61353c | 6682 | { |
c10ce82e JB |
6683 | CHECK_NUMBER (right_width); |
6684 | if (XINT (right_width) <= 0) | |
6685 | right_width = Qnil; | |
6b61353c | 6686 | } |
5500c422 | 6687 | |
c10ce82e JB |
6688 | if (!EQ (w->left_margin_cols, left_width) |
6689 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6690 | { |
c10ce82e JB |
6691 | w->left_margin_cols = left_width; |
6692 | w->right_margin_cols = right_width; | |
949cf20f KS |
6693 | |
6694 | adjust_window_margins (w); | |
6695 | ||
6696 | ++windows_or_buffers_changed; | |
6697 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6698 | } | |
5500c422 | 6699 | |
5500c422 GM |
6700 | return Qnil; |
6701 | } | |
6702 | ||
6703 | ||
6704 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6705 | 0, 1, 0, | |
fdb82f93 PJ |
6706 | doc: /* Get width of marginal areas of window WINDOW. |
6707 | If WINDOW is omitted or nil, use the currently selected window. | |
6708 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6709 | If a marginal area does not exist, its width will be returned | |
6710 | as nil. */) | |
6711 | (window) | |
5500c422 GM |
6712 | Lisp_Object window; |
6713 | { | |
6714 | struct window *w = decode_window (window); | |
949cf20f KS |
6715 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6716 | } | |
6717 | ||
6718 | ||
6719 | \f | |
6720 | /*********************************************************************** | |
6721 | Fringes | |
6722 | ***********************************************************************/ | |
6723 | ||
6724 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6725 | 2, 4, 0, | |
6b61353c KH |
6726 | doc: /* Set the fringe widths of window WINDOW. |
6727 | If WINDOW is nil, set the fringe widths of the currently selected | |
6728 | window. | |
6729 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6730 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6731 | fringe width. If a fringe width arg is nil, that means to use the | |
6732 | frame's default fringe width. Default fringe widths can be set with | |
6733 | the command `set-fringe-style'. | |
6734 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6735 | outside of the display margins. By default, fringes are drawn between | |
6736 | display marginal areas and the text area. */) | |
c10ce82e JB |
6737 | (window, left_width, right_width, outside_margins) |
6738 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6739 | { |
6740 | struct window *w = decode_window (window); | |
6741 | ||
c10ce82e JB |
6742 | if (!NILP (left_width)) |
6743 | CHECK_NATNUM (left_width); | |
6744 | if (!NILP (right_width)) | |
6745 | CHECK_NATNUM (right_width); | |
5a857365 | 6746 | |
017e297e | 6747 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6748 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6749 | && (!EQ (w->left_fringe_width, left_width) | |
6750 | || !EQ (w->right_fringe_width, right_width) | |
6751 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6752 | { |
c10ce82e JB |
6753 | w->left_fringe_width = left_width; |
6754 | w->right_fringe_width = right_width; | |
949cf20f KS |
6755 | w->fringes_outside_margins = outside_margins; |
6756 | ||
6757 | adjust_window_margins (w); | |
6758 | ||
6759 | clear_glyph_matrix (w->current_matrix); | |
6760 | w->window_end_valid = Qnil; | |
6761 | ||
6762 | ++windows_or_buffers_changed; | |
6763 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6764 | } | |
6765 | ||
6766 | return Qnil; | |
6767 | } | |
6768 | ||
6769 | ||
6770 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6771 | 0, 1, 0, | |
6772 | doc: /* Get width of fringes of window WINDOW. | |
6773 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6774 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6775 | (window) |
6776 | Lisp_Object window; | |
6777 | { | |
6778 | struct window *w = decode_window (window); | |
d46c6df5 | 6779 | |
949cf20f KS |
6780 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6781 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6782 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6783 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6784 | } |
6785 | ||
6786 | ||
6787 | \f | |
6788 | /*********************************************************************** | |
6789 | Scroll bars | |
6790 | ***********************************************************************/ | |
6791 | ||
6792 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6793 | 2, 4, 0, | |
6794 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6795 | If window is nil, set scroll bars of the currently selected window. | |
6796 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6797 | this is automatically adjusted to a multiple of the frame column width. | |
6798 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6799 | bar: left, right, or nil. | |
6b61353c | 6800 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6801 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6802 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6803 | (window, width, vertical_type, horizontal_type) |
6804 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6805 | { |
6806 | struct window *w = decode_window (window); | |
6807 | ||
6808 | if (!NILP (width)) | |
0f8fe9a2 SM |
6809 | { |
6810 | CHECK_NATNUM (width); | |
949cf20f | 6811 | |
0f8fe9a2 SM |
6812 | if (XINT (width) == 0) |
6813 | vertical_type = Qnil; | |
6814 | } | |
949cf20f | 6815 | |
413a79ad | 6816 | if (!(NILP (vertical_type) |
0cc1039f | 6817 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6818 | || EQ (vertical_type, Qright) |
6819 | || EQ (vertical_type, Qt))) | |
6820 | error ("Invalid type of vertical scroll bar"); | |
6821 | ||
949cf20f KS |
6822 | if (!EQ (w->scroll_bar_width, width) |
6823 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6824 | { | |
6825 | w->scroll_bar_width = width; | |
6826 | w->vertical_scroll_bar_type = vertical_type; | |
6827 | ||
6828 | adjust_window_margins (w); | |
6829 | ||
6830 | clear_glyph_matrix (w->current_matrix); | |
6831 | w->window_end_valid = Qnil; | |
6832 | ||
6833 | ++windows_or_buffers_changed; | |
6834 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6835 | } | |
6836 | ||
6837 | return Qnil; | |
6838 | } | |
6839 | ||
6840 | ||
6841 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6842 | 0, 1, 0, | |
6843 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6844 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6845 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6846 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6847 | value. */) | |
949cf20f KS |
6848 | (window) |
6849 | Lisp_Object window; | |
6850 | { | |
6851 | struct window *w = decode_window (window); | |
6852 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6853 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6854 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6855 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6856 | Fcons (w->vertical_scroll_bar_type, | |
6857 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6858 | } |
6859 | ||
6860 | ||
7ab12479 | 6861 | \f |
5500c422 GM |
6862 | /*********************************************************************** |
6863 | Smooth scrolling | |
6864 | ***********************************************************************/ | |
6865 | ||
0cc1039f | 6866 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6867 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6868 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6869 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6870 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6871 | (window, pixels_p) |
6872 | Lisp_Object window, pixels_p; | |
5500c422 | 6873 | { |
47004952 | 6874 | Lisp_Object result; |
5500c422 GM |
6875 | struct frame *f; |
6876 | struct window *w; | |
177c0ea7 | 6877 | |
5500c422 GM |
6878 | if (NILP (window)) |
6879 | window = selected_window; | |
47004952 | 6880 | else |
b7826503 | 6881 | CHECK_WINDOW (window); |
5500c422 GM |
6882 | w = XWINDOW (window); |
6883 | f = XFRAME (w->frame); | |
177c0ea7 | 6884 | |
5500c422 | 6885 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6886 | result = (NILP (pixels_p) |
6887 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6888 | : make_number (-w->vscroll)); | |
5500c422 | 6889 | else |
47004952 GM |
6890 | result = make_number (0); |
6891 | return result; | |
5500c422 GM |
6892 | } |
6893 | ||
6894 | ||
6895 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6896 | 2, 3, 0, |
fdb82f93 | 6897 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6898 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6899 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6900 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6901 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6902 | corresponds to an integral number of pixels. The return value is the | |
6903 | result of this rounding. | |
6904 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6905 | (window, vscroll, pixels_p) |
6906 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6907 | { |
6908 | struct window *w; | |
6909 | struct frame *f; | |
177c0ea7 | 6910 | |
5500c422 GM |
6911 | if (NILP (window)) |
6912 | window = selected_window; | |
47004952 | 6913 | else |
b7826503 PJ |
6914 | CHECK_WINDOW (window); |
6915 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6916 | |
5500c422 GM |
6917 | w = XWINDOW (window); |
6918 | f = XFRAME (w->frame); | |
6919 | ||
6920 | if (FRAME_WINDOW_P (f)) | |
6921 | { | |
6922 | int old_dy = w->vscroll; | |
177c0ea7 | 6923 | |
0cc1039f KS |
6924 | w->vscroll = - (NILP (pixels_p) |
6925 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6926 | : XFLOATINT (vscroll)); | |
47004952 | 6927 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6928 | |
e56263e5 KS |
6929 | if (w->vscroll != old_dy) |
6930 | { | |
6931 | /* Adjust glyph matrix of the frame if the virtual display | |
6932 | area becomes larger than before. */ | |
6933 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6934 | adjust_glyphs (f); | |
177c0ea7 | 6935 | |
e56263e5 KS |
6936 | /* Prevent redisplay shortcuts. */ |
6937 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6938 | } | |
5500c422 | 6939 | } |
177c0ea7 | 6940 | |
0cc1039f | 6941 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6942 | } |
177c0ea7 | 6943 | |
7bbb5782 GM |
6944 | \f |
6945 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6946 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6947 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6948 | |
6949 | void | |
f95464e4 | 6950 | foreach_window (f, fn, user_data) |
7bbb5782 | 6951 | struct frame *f; |
f95464e4 GM |
6952 | int (* fn) P_ ((struct window *, void *)); |
6953 | void *user_data; | |
7bbb5782 | 6954 | { |
56f2de10 | 6955 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6956 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6957 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6958 | } |
6959 | ||
6960 | ||
6961 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6962 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6963 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6964 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6965 | |
67492200 | 6966 | static int |
f95464e4 | 6967 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 6968 | struct window *w; |
f95464e4 GM |
6969 | int (* fn) P_ ((struct window *, void *)); |
6970 | void *user_data; | |
7bbb5782 | 6971 | { |
67492200 | 6972 | int cont; |
177c0ea7 | 6973 | |
67492200 | 6974 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6975 | { |
6976 | if (!NILP (w->hchild)) | |
f95464e4 | 6977 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6978 | else if (!NILP (w->vchild)) |
f95464e4 | 6979 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6980 | else |
0f532a9a | 6981 | cont = fn (w, user_data); |
177c0ea7 | 6982 | |
7bbb5782 GM |
6983 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6984 | } | |
67492200 GM |
6985 | |
6986 | return cont; | |
7bbb5782 GM |
6987 | } |
6988 | ||
6989 | ||
6d194a45 | 6990 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6991 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6992 | the window start. */ |
6993 | ||
67492200 | 6994 | static int |
7bbb5782 GM |
6995 | freeze_window_start (w, freeze_p) |
6996 | struct window *w; | |
f95464e4 | 6997 | void *freeze_p; |
7bbb5782 | 6998 | { |
08c1d235 SM |
6999 | if (MINI_WINDOW_P (w) |
7000 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
7001 | && (w == XWINDOW (selected_window) | |
7002 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
7003 | && ! NILP (Vminibuf_scroll_window) | |
7004 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 7005 | freeze_p = NULL; |
177c0ea7 | 7006 | |
f95464e4 | 7007 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7008 | return 1; |
7bbb5782 GM |
7009 | } |
7010 | ||
7011 | ||
7012 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7013 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7014 | means freeze the window start. */ | |
7015 | ||
7016 | void | |
7017 | freeze_window_starts (f, freeze_p) | |
7018 | struct frame *f; | |
7019 | int freeze_p; | |
7020 | { | |
cbccabec | 7021 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7022 | } |
5500c422 GM |
7023 | |
7024 | \f | |
7025 | /*********************************************************************** | |
7026 | Initialization | |
7027 | ***********************************************************************/ | |
7028 | ||
cbff28e8 | 7029 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 7030 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
7031 | |
7032 | int | |
2f8274be | 7033 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7034 | Lisp_Object c1, c2; |
2f8274be | 7035 | int ignore_positions; |
cbff28e8 RS |
7036 | { |
7037 | register struct save_window_data *d1, *d2; | |
7038 | struct Lisp_Vector *sw1, *sw2; | |
7039 | int i; | |
7040 | ||
663fbbba KS |
7041 | CHECK_WINDOW_CONFIGURATION (c1); |
7042 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7043 | |
cbff28e8 RS |
7044 | d1 = (struct save_window_data *) XVECTOR (c1); |
7045 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7046 | sw1 = XVECTOR (d1->saved_windows); | |
7047 | sw2 = XVECTOR (d2->saved_windows); | |
7048 | ||
b05b4e27 | 7049 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 7050 | return 0; |
b05b4e27 | 7051 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 7052 | return 0; |
b05b4e27 | 7053 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
7054 | return 0; |
7055 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7056 | return 0; | |
7057 | /* Don't compare the current_window field directly. | |
7058 | Instead see w1_is_current and w2_is_current, below. */ | |
7059 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7060 | return 0; | |
2f8274be | 7061 | if (! ignore_positions) |
3f49fddc KS |
7062 | { |
7063 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7064 | return 0; | |
7065 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7066 | return 0; | |
7067 | } | |
cbff28e8 RS |
7068 | /* Don't compare the root_window field. |
7069 | We don't require the two configurations | |
7070 | to use the same window object, | |
7071 | and the two root windows must be equivalent | |
7072 | if everything else compares equal. */ | |
7073 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7074 | return 0; | |
cbff28e8 RS |
7075 | |
7076 | /* Verify that the two confis have the same number of windows. */ | |
14fe7b53 | 7077 | if (sw1->header.size != sw2->header.size) |
cbff28e8 RS |
7078 | return 0; |
7079 | ||
14fe7b53 | 7080 | for (i = 0; i < sw1->header.size; i++) |
cbff28e8 RS |
7081 | { |
7082 | struct saved_window *p1, *p2; | |
7083 | int w1_is_current, w2_is_current; | |
7084 | ||
7085 | p1 = SAVED_WINDOW_N (sw1, i); | |
7086 | p2 = SAVED_WINDOW_N (sw2, i); | |
7087 | ||
7088 | /* Verify that the current windows in the two | |
7089 | configurations correspond to each other. */ | |
7090 | w1_is_current = EQ (d1->current_window, p1->window); | |
7091 | w2_is_current = EQ (d2->current_window, p2->window); | |
7092 | ||
7093 | if (w1_is_current != w2_is_current) | |
7094 | return 0; | |
7095 | ||
7096 | /* Verify that the corresponding windows do match. */ | |
7097 | if (! EQ (p1->buffer, p2->buffer)) | |
7098 | return 0; | |
949cf20f | 7099 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7100 | return 0; |
949cf20f | 7101 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7102 | return 0; |
949cf20f | 7103 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7104 | return 0; |
949cf20f | 7105 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7106 | return 0; |
cbff28e8 RS |
7107 | if (! EQ (p1->display_table, p2->display_table)) |
7108 | return 0; | |
7109 | if (! EQ (p1->parent, p2->parent)) | |
7110 | return 0; | |
7111 | if (! EQ (p1->prev, p2->prev)) | |
7112 | return 0; | |
2f8274be RS |
7113 | if (! ignore_positions) |
7114 | { | |
7115 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7116 | return 0; | |
ea68264b GM |
7117 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7118 | return 0; | |
2f8274be RS |
7119 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7120 | return 0; | |
7121 | if (NILP (Fequal (p1->start, p2->start))) | |
7122 | return 0; | |
7123 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7124 | return 0; | |
7125 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7126 | return 0; | |
7127 | } | |
949cf20f KS |
7128 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7129 | return 0; | |
7130 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7131 | return 0; | |
7132 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7133 | return 0; | |
7134 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7135 | return 0; | |
7136 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7137 | return 0; | |
7138 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7139 | return 0; | |
7140 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7141 | return 0; | |
cbff28e8 RS |
7142 | } |
7143 | ||
7144 | return 1; | |
7145 | } | |
2f8274be RS |
7146 | |
7147 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7148 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7149 | doc: /* Compare two window configurations as regards the structure of windows. |
7150 | This function ignores details such as the values of point and mark | |
7151 | and scrolling positions. */) | |
7152 | (x, y) | |
2f8274be RS |
7153 | Lisp_Object x, y; |
7154 | { | |
7155 | if (compare_window_configurations (x, y, 1)) | |
7156 | return Qt; | |
7157 | return Qnil; | |
7158 | } | |
cbff28e8 | 7159 | \f |
dfcf069d | 7160 | void |
7ab12479 JB |
7161 | init_window_once () |
7162 | { | |
3224dac1 | 7163 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7164 | XSETFRAME (selected_frame, f); |
7165 | Vterminal_frame = selected_frame; | |
7166 | minibuf_window = f->minibuffer_window; | |
7167 | selected_window = f->selected_window; | |
7168 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7169 | |
7170 | window_initialized = 1; | |
7ab12479 JB |
7171 | } |
7172 | ||
67492200 GM |
7173 | void |
7174 | init_window () | |
7175 | { | |
7176 | Vwindow_list = Qnil; | |
7177 | } | |
7178 | ||
dfcf069d | 7179 | void |
7ab12479 JB |
7180 | syms_of_window () |
7181 | { | |
d67b4f80 | 7182 | Qscroll_up = intern_c_string ("scroll-up"); |
c525d842 CY |
7183 | staticpro (&Qscroll_up); |
7184 | ||
d67b4f80 | 7185 | Qscroll_down = intern_c_string ("scroll-down"); |
c525d842 CY |
7186 | staticpro (&Qscroll_down); |
7187 | ||
d67b4f80 | 7188 | Qwindow_size_fixed = intern_c_string ("window-size-fixed"); |
8a37516b | 7189 | staticpro (&Qwindow_size_fixed); |
c0e7ccd3 | 7190 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7191 | |
543f5fb1 RS |
7192 | staticpro (&Qwindow_configuration_change_hook); |
7193 | Qwindow_configuration_change_hook | |
d67b4f80 | 7194 | = intern_c_string ("window-configuration-change-hook"); |
543f5fb1 | 7195 | |
d67b4f80 | 7196 | Qwindowp = intern_c_string ("windowp"); |
7ab12479 JB |
7197 | staticpro (&Qwindowp); |
7198 | ||
d67b4f80 | 7199 | Qwindow_configuration_p = intern_c_string ("window-configuration-p"); |
3f8ab7bd RS |
7200 | staticpro (&Qwindow_configuration_p); |
7201 | ||
d67b4f80 | 7202 | Qwindow_live_p = intern_c_string ("window-live-p"); |
806b4d9b | 7203 | staticpro (&Qwindow_live_p); |
605be8af | 7204 | |
d67b4f80 | 7205 | Qdisplay_buffer = intern_c_string ("display-buffer"); |
87478b52 SM |
7206 | staticpro (&Qdisplay_buffer); |
7207 | ||
d67b4f80 | 7208 | Qtemp_buffer_show_hook = intern_c_string ("temp-buffer-show-hook"); |
a58ec57d RS |
7209 | staticpro (&Qtemp_buffer_show_hook); |
7210 | ||
67492200 | 7211 | staticpro (&Vwindow_list); |
8bfb170b KS |
7212 | |
7213 | minibuf_selected_window = Qnil; | |
3dbab091 | 7214 | staticpro (&minibuf_selected_window); |
67492200 | 7215 | |
c876b227 | 7216 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7217 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7218 | window_scroll_preserve_hpos = -1; |
7219 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7220 | |
7ab12479 | 7221 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7222 | doc: /* Non-nil means call as function to display a help buffer. |
7223 | The function is called with one argument, the buffer to be displayed. | |
7224 | Used by `with-output-to-temp-buffer'. | |
7225 | If this function is used, then it must do the entire job of showing | |
7226 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7227 | Vtemp_buffer_show_function = Qnil; |
7228 | ||
7ab12479 | 7229 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7230 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7231 | Vminibuf_scroll_window = Qnil; |
7232 | ||
cc91894c | 7233 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7234 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7235 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7236 | is displayed in the `mode-line' face. */); | |
7237 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7238 | |
7ab12479 | 7239 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7240 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7241 | Vother_window_scroll_buffer = Qnil; |
7242 | ||
e56263e5 KS |
7243 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7244 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7245 | auto_window_vscroll_p = 1; | |
7246 | ||
7ab12479 | 7247 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, |
fdb82f93 | 7248 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7249 | next_screen_context_lines = 2; |
7250 | ||
7ab12479 | 7251 | DEFVAR_INT ("window-min-height", &window_min_height, |
047aaeb9 MR |
7252 | doc: /* Allow deleting windows less than this tall. |
7253 | The value is measured in line units. If a window wants a modeline it | |
7254 | is counted as one line. | |
7255 | ||
7256 | Emacs honors settings of this variable when enlarging or shrinking | |
7257 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7258 | window_min_height = 4; |
7259 | ||
7260 | DEFVAR_INT ("window-min-width", &window_min_width, | |
047aaeb9 MR |
7261 | doc: /* Allow deleting windows less than this wide. |
7262 | The value is measured in characters and includes any fringes or | |
7263 | the scrollbar. | |
7264 | ||
7265 | Emacs honors settings of this variable when enlarging or shrinking | |
7266 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7267 | window_min_width = 10; |
7268 | ||
5500c422 GM |
7269 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7270 | &Vscroll_preserve_screen_position, | |
c876b227 | 7271 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7272 | A value of nil means point does not keep its screen position except |
7273 | at the scroll margin or window boundary respectively. | |
7274 | A value of t means point keeps its screen position if the scroll | |
7275 | command moved it vertically out of the window, e.g. when scrolling | |
7276 | by full screens. | |
7277 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7278 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7279 | |
a1562258 SM |
7280 | DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type, |
7281 | doc: /* Type of marker to use for `window-point'. */); | |
7282 | Vwindow_point_insertion_type = Qnil; | |
7283 | ||
543f5fb1 RS |
7284 | DEFVAR_LISP ("window-configuration-change-hook", |
7285 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7286 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7287 | The buffer-local part is run once per window, with the relevant window |
7288 | selected; while the global part is run only once for the modified frame, | |
7289 | with the relevant frame selected. */); | |
543f5fb1 RS |
7290 | Vwindow_configuration_change_hook = Qnil; |
7291 | ||
666e158e MB |
7292 | DEFVAR_LISP ("recenter-redisplay", &Vrecenter_redisplay, |
7293 | doc: /* If non-nil, then the `recenter' command with a nil argument | |
7294 | the entire frame to be redrawn; the special value `tty' causes the | |
7295 | frame to be redrawn only if it is a tty frame. */); | |
7296 | Vrecenter_redisplay = Qtty; | |
7297 | ||
7298 | ||
7ab12479 JB |
7299 | defsubr (&Sselected_window); |
7300 | defsubr (&Sminibuffer_window); | |
7301 | defsubr (&Swindow_minibuffer_p); | |
7302 | defsubr (&Swindowp); | |
806b4d9b | 7303 | defsubr (&Swindow_live_p); |
7ab12479 | 7304 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7305 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7306 | defsubr (&Swindow_buffer); |
7307 | defsubr (&Swindow_height); | |
7308 | defsubr (&Swindow_width); | |
35ea56c9 | 7309 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7310 | defsubr (&Swindow_hscroll); |
7311 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7312 | defsubr (&Swindow_redisplay_end_trigger); |
7313 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7314 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7315 | defsubr (&Swindow_pixel_edges); |
7316 | defsubr (&Swindow_inside_edges); | |
7317 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7318 | defsubr (&Scoordinates_in_window_p); |
7319 | defsubr (&Swindow_at); | |
7ab12479 JB |
7320 | defsubr (&Swindow_point); |
7321 | defsubr (&Swindow_start); | |
7322 | defsubr (&Swindow_end); | |
7323 | defsubr (&Sset_window_point); | |
7324 | defsubr (&Sset_window_start); | |
7325 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7326 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7327 | defsubr (&Swindow_display_table); |
7328 | defsubr (&Sset_window_display_table); | |
7329 | defsubr (&Snext_window); | |
7330 | defsubr (&Sprevious_window); | |
7331 | defsubr (&Sother_window); | |
7332 | defsubr (&Sget_lru_window); | |
7333 | defsubr (&Sget_largest_window); | |
7334 | defsubr (&Sget_buffer_window); | |
7335 | defsubr (&Sdelete_other_windows); | |
7336 | defsubr (&Sdelete_windows_on); | |
7337 | defsubr (&Sreplace_buffer_in_windows); | |
7338 | defsubr (&Sdelete_window); | |
7339 | defsubr (&Sset_window_buffer); | |
7340 | defsubr (&Sselect_window); | |
6b61353c | 7341 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7342 | defsubr (&Ssplit_window); |
7343 | defsubr (&Senlarge_window); | |
7344 | defsubr (&Sshrink_window); | |
0d384044 | 7345 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7346 | defsubr (&Sscroll_up); |
7347 | defsubr (&Sscroll_down); | |
7348 | defsubr (&Sscroll_left); | |
7349 | defsubr (&Sscroll_right); | |
ccd0664b | 7350 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7351 | defsubr (&Sscroll_other_window); |
fa832261 | 7352 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7353 | defsubr (&Srecenter); |
81fe0836 | 7354 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7355 | defsubr (&Smove_to_window_line); |
7356 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7357 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7358 | defsubr (&Sset_window_configuration); |
7359 | defsubr (&Scurrent_window_configuration); | |
7360 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7361 | defsubr (&Swindow_tree); |
5500c422 GM |
7362 | defsubr (&Sset_window_margins); |
7363 | defsubr (&Swindow_margins); | |
949cf20f KS |
7364 | defsubr (&Sset_window_fringes); |
7365 | defsubr (&Swindow_fringes); | |
7366 | defsubr (&Sset_window_scroll_bars); | |
7367 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7368 | defsubr (&Swindow_vscroll); |
7369 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7370 | defsubr (&Scompare_window_configurations); |
67492200 | 7371 | defsubr (&Swindow_list); |
cfbb2395 JB |
7372 | defsubr (&Swindow_parameters); |
7373 | defsubr (&Swindow_parameter); | |
7374 | defsubr (&Sset_window_parameter); | |
7375 | ||
7ab12479 JB |
7376 | } |
7377 | ||
dfcf069d | 7378 | void |
7ab12479 JB |
7379 | keys_of_window () |
7380 | { | |
7381 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7382 | initial_define_key (control_x_map, '2', "split-window"); | |
7383 | initial_define_key (control_x_map, '0', "delete-window"); | |
7384 | initial_define_key (control_x_map, 'o', "other-window"); | |
7385 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7386 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7387 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7388 | ||
7389 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7390 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7391 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7392 | ||
7393 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7394 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7395 | } | |
6b61353c KH |
7396 | |
7397 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7398 | (do not change this comment) */ |