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, |
114f9c96 | 4 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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; |
a4b000fb | 57 | Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
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)); |
b7354ddf | 88 | |
7ab12479 JB |
89 | /* This is the window in which the terminal's cursor should |
90 | be left when nothing is being done with it. This must | |
91 | always be a leaf window, and its buffer is selected by | |
92 | the top level editing loop at the end of each command. | |
93 | ||
94 | This value is always the same as | |
44fa5b1e | 95 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
96 | |
97 | Lisp_Object selected_window; | |
98 | ||
67492200 GM |
99 | /* A list of all windows for use by next_window and Fwindow_list. |
100 | Functions creating or deleting windows should invalidate this cache | |
101 | by setting it to nil. */ | |
102 | ||
103 | Lisp_Object Vwindow_list; | |
104 | ||
5500c422 GM |
105 | /* The mini-buffer window of the selected frame. |
106 | Note that you cannot test for mini-bufferness of an arbitrary window | |
107 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 108 | the selected window. */ |
5500c422 | 109 | |
7ab12479 JB |
110 | Lisp_Object minibuf_window; |
111 | ||
3f49fddc KS |
112 | /* Non-nil means it is the window whose mode line should be |
113 | shown as the selected window when the minibuffer is selected. */ | |
114 | ||
3dbab091 | 115 | Lisp_Object minibuf_selected_window; |
3f49fddc | 116 | |
7ab12479 | 117 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
118 | when the mini-buffer is selected. */ |
119 | ||
7ab12479 JB |
120 | Lisp_Object Vminibuf_scroll_window; |
121 | ||
122 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 123 | |
7ab12479 JB |
124 | Lisp_Object Vother_window_scroll_buffer; |
125 | ||
7ab12479 | 126 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 127 | |
7ab12479 JB |
128 | Lisp_Object Vtemp_buffer_show_function; |
129 | ||
e56263e5 KS |
130 | /* Non-zero means line and page scrolling on tall lines (with images) |
131 | does partial scrolling by modifying window-vscroll. */ | |
132 | ||
133 | int auto_window_vscroll_p; | |
134 | ||
cc91894c KS |
135 | /* Non-zero means to use mode-line-inactive face in all windows but the |
136 | selected-window and the minibuffer-scroll-window when the | |
137 | minibuffer is active. */ | |
138 | int mode_line_in_non_selected_windows; | |
26124d5e | 139 | |
7ab12479 | 140 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 141 | |
31ade731 SM |
142 | EMACS_INT window_min_height; |
143 | EMACS_INT window_min_width; | |
7ab12479 | 144 | |
a58ec57d | 145 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 146 | |
a58ec57d RS |
147 | Lisp_Object Qtemp_buffer_show_hook; |
148 | ||
7ab12479 | 149 | /* Number of lines of continuity in scrolling by screenfuls. */ |
5500c422 | 150 | |
31ade731 | 151 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
152 | |
153 | /* Incremented for each window created. */ | |
5500c422 | 154 | |
7ab12479 JB |
155 | static int sequence_number; |
156 | ||
5b03d3c0 | 157 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 158 | |
5b03d3c0 RS |
159 | static int window_initialized; |
160 | ||
543f5fb1 | 161 | /* Hook to run when window config changes. */ |
5500c422 | 162 | |
eeca6f6f SM |
163 | static Lisp_Object Qwindow_configuration_change_hook; |
164 | static Lisp_Object Vwindow_configuration_change_hook; | |
543f5fb1 | 165 | |
d0c38d63 | 166 | /* Non-nil means scroll commands try to put point |
9317a85d | 167 | at the same screen height as previously. */ |
9317a85d | 168 | |
5500c422 GM |
169 | Lisp_Object Vscroll_preserve_screen_position; |
170 | ||
a1562258 SM |
171 | /* Non-nil means that text is inserted before window's markers. */ |
172 | ||
173 | Lisp_Object Vwindow_point_insertion_type; | |
174 | ||
0d384044 RS |
175 | /* Incremented by 1 whenever a window is deleted. */ |
176 | ||
177 | int window_deletion_count; | |
178 | ||
66d43aea LT |
179 | /* Used by the function window_scroll_pixel_based */ |
180 | ||
c876b227 | 181 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 182 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 183 | |
c876b227 SM |
184 | /* Same for window_scroll_line_based. */ |
185 | ||
186 | static int window_scroll_preserve_hpos; | |
187 | static int window_scroll_preserve_vpos; | |
188 | ||
5500c422 | 189 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 190 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 191 | static int inhibit_frame_unsplittable; |
5500c422 | 192 | #endif /* 0 */ |
7d601aaa | 193 | |
31ade731 | 194 | extern EMACS_INT scroll_margin; |
9317a85d | 195 | |
dba06815 | 196 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
666e158e MB |
197 | |
198 | /* If non-nil, then the `recenter' command with a nil argument | |
199 | the entire frame to be redrawn; the special value `tty' causes the | |
200 | frame to be redrawn only if it is a tty frame. */ | |
201 | ||
202 | static Lisp_Object Vrecenter_redisplay; | |
203 | extern Lisp_Object Qtty; | |
204 | ||
7ab12479 JB |
205 | \f |
206 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
23fe745a | 207 | doc: /* Return t if OBJECT is a window. */) |
fdb82f93 | 208 | (object) |
413430c5 | 209 | Lisp_Object object; |
7ab12479 | 210 | { |
413430c5 | 211 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
212 | } |
213 | ||
806b4d9b | 214 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
23fe745a | 215 | doc: /* Return t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
216 | (object) |
217 | Lisp_Object object; | |
605be8af | 218 | { |
9e571f49 | 219 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
220 | } |
221 | ||
7ab12479 JB |
222 | Lisp_Object |
223 | make_window () | |
224 | { | |
cffec418 | 225 | Lisp_Object val; |
7ab12479 | 226 | register struct window *p; |
cffec418 | 227 | |
26605be9 | 228 | p = allocate_window (); |
2a1893f4 SM |
229 | ++sequence_number; |
230 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
231 | XSETFASTINT (p->left_col, 0); |
232 | XSETFASTINT (p->top_line, 0); | |
233 | XSETFASTINT (p->total_lines, 0); | |
234 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 235 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 236 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 237 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
238 | p->start = Fmake_marker (); |
239 | p->pointm = Fmake_marker (); | |
d834a2e9 | 240 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 241 | p->frame = Qnil; |
7ab12479 JB |
242 | p->display_table = Qnil; |
243 | p->dedicated = Qnil; | |
cfbb2395 | 244 | p->window_parameters = Qnil; |
5500c422 GM |
245 | p->pseudo_window_p = 0; |
246 | bzero (&p->cursor, sizeof (p->cursor)); | |
247 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
248 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
249 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 250 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 251 | p->phys_cursor_type = -1; |
4b26579e | 252 | p->phys_cursor_width = -1; |
5500c422 GM |
253 | p->must_be_updated_p = 0; |
254 | XSETFASTINT (p->window_end_vpos, 0); | |
255 | XSETFASTINT (p->window_end_pos, 0); | |
256 | p->window_end_valid = Qnil; | |
257 | p->vscroll = 0; | |
cffec418 | 258 | XSETWINDOW (val, p); |
5500c422 | 259 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 260 | p->frozen_window_start_p = 0; |
6b448755 | 261 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
262 | p->left_margin_cols = Qnil; |
263 | p->right_margin_cols = Qnil; | |
264 | p->left_fringe_width = Qnil; | |
265 | p->right_fringe_width = Qnil; | |
266 | p->fringes_outside_margins = Qnil; | |
267 | p->scroll_bar_width = Qnil; | |
268 | p->vertical_scroll_bar_type = Qt; | |
047aaeb9 | 269 | p->resize_proportionally = Qnil; |
67492200 GM |
270 | |
271 | Vwindow_list = Qnil; | |
7ab12479 JB |
272 | return val; |
273 | } | |
274 | ||
275 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
276 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
277 | () | |
7ab12479 JB |
278 | { |
279 | return selected_window; | |
280 | } | |
281 | ||
83762ba4 | 282 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
283 | doc: /* Return the window used now for minibuffers. |
284 | If the optional argument FRAME is specified, return the minibuffer window | |
285 | used by that frame. */) | |
286 | (frame) | |
83762ba4 | 287 | Lisp_Object frame; |
7ab12479 | 288 | { |
83762ba4 | 289 | if (NILP (frame)) |
1ae1a37d | 290 | frame = selected_frame; |
b7826503 | 291 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 292 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
293 | } |
294 | ||
605be8af | 295 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
23fe745a | 296 | doc: /* Return non-nil if WINDOW is a minibuffer window. |
6b61353c | 297 | WINDOW defaults to the selected window. */) |
fdb82f93 | 298 | (window) |
7ab12479 JB |
299 | Lisp_Object window; |
300 | { | |
301 | struct window *w = decode_window (window); | |
53bb6b99 | 302 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
303 | } |
304 | ||
305 | ||
7ab12479 | 306 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 307 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 308 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
309 | Return nil if that position is scrolled vertically out of view. |
310 | If a character is only partially visible, nil is returned, unless the | |
311 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 312 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 313 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
314 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
315 | ||
316 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
317 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
318 | where X and Y are the pixel coordinates relative to the top left corner | |
319 | of the window. The remaining elements are omitted if the character after | |
320 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 321 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 322 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 323 | (pos, window, partially) |
5cdb3cf3 | 324 | Lisp_Object pos, window, partially; |
7ab12479 JB |
325 | { |
326 | register struct window *w; | |
7ab12479 JB |
327 | register int posint; |
328 | register struct buffer *buf; | |
9a132b1f | 329 | struct text_pos top; |
0cc1039f | 330 | Lisp_Object in_window = Qnil; |
5a857365 | 331 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 332 | int x, y; |
7ab12479 | 333 | |
f28b75a9 MB |
334 | w = decode_window (window); |
335 | buf = XBUFFER (w->buffer); | |
336 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
337 | ||
120b7781 KS |
338 | if (EQ (pos, Qt)) |
339 | posint = -1; | |
340 | else if (!NILP (pos)) | |
7ab12479 | 341 | { |
b7826503 | 342 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
343 | posint = XINT (pos); |
344 | } | |
f28b75a9 MB |
345 | else if (w == XWINDOW (selected_window)) |
346 | posint = PT; | |
347 | else | |
348 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 349 | |
0cc1039f KS |
350 | /* If position is above window start or outside buffer boundaries, |
351 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
352 | if ((EQ (pos, Qt) |
353 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
354 | && CHARPOS (top) >= BUF_BEGV (buf) |
355 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 356 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 357 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
358 | in_window = Qt; |
359 | ||
360 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
361 | { |
362 | Lisp_Object part = Qnil; | |
363 | if (!fully_p) | |
364 | part = list4 (make_number (rtop), make_number (rbot), | |
365 | make_number (rowh), make_number (vpos)); | |
366 | in_window = Fcons (make_number (x), | |
367 | Fcons (make_number (y), part)); | |
368 | } | |
369 | ||
9a132b1f | 370 | return in_window; |
7ab12479 | 371 | } |
53bb6b99 | 372 | |
536833ab | 373 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 374 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
375 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
376 | If WINDOW is nil or omitted, use selected window. | |
377 | ||
7bbc67d2 KS |
378 | Return height of current line if LINE is omitted or nil. Return height of |
379 | header or mode line if LINE is `header-line' and `mode-line'. | |
380 | Otherwise, LINE is a text line number starting from 0. A negative number | |
381 | counts from the end of the window. | |
536833ab | 382 | |
7bbc67d2 | 383 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 384 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 385 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 386 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
387 | the bottom of the text line. If there are off-window pixels at the top |
388 | of the (first) text line, YPOS is negative. | |
536833ab KS |
389 | |
390 | Return nil if window display is not up-to-date. In that case, use | |
391 | `pos-visible-in-window-p' to obtain the information. */) | |
392 | (line, window) | |
393 | Lisp_Object line, window; | |
b3a10345 KS |
394 | { |
395 | register struct window *w; | |
396 | register struct buffer *b; | |
397 | struct glyph_row *row, *end_row; | |
536833ab | 398 | int max_y, crop, i, n; |
b3a10345 KS |
399 | |
400 | w = decode_window (window); | |
401 | ||
402 | if (noninteractive | |
b3a10345 | 403 | || w->pseudo_window_p) |
7bbc67d2 | 404 | return Qnil; |
b3a10345 KS |
405 | |
406 | CHECK_BUFFER (w->buffer); | |
407 | b = XBUFFER (w->buffer); | |
408 | ||
409 | /* Fail if current matrix is not up-to-date. */ | |
410 | if (NILP (w->window_end_valid) | |
411 | || current_buffer->clip_changed | |
412 | || current_buffer->prevent_redisplay_optimizations_p | |
413 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
414 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
415 | return Qnil; | |
416 | ||
7bbc67d2 KS |
417 | if (NILP (line)) |
418 | { | |
419 | i = w->cursor.vpos; | |
420 | if (i < 0 || i >= w->current_matrix->nrows | |
421 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
422 | return Qnil; | |
423 | max_y = window_text_bottom_y (w); | |
424 | goto found_row; | |
425 | } | |
426 | ||
536833ab | 427 | if (EQ (line, Qheader_line)) |
b3a10345 | 428 | { |
536833ab KS |
429 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
430 | return Qnil; | |
431 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
432 | if (!row->enabled_p) |
433 | return Qnil; | |
536833ab KS |
434 | return list4 (make_number (row->height), |
435 | make_number (0), make_number (0), | |
436 | make_number (0)); | |
b3a10345 | 437 | } |
536833ab KS |
438 | |
439 | if (EQ (line, Qmode_line)) | |
b3a10345 | 440 | { |
536833ab KS |
441 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
442 | if (!row->enabled_p) | |
443 | return Qnil; | |
444 | return list4 (make_number (row->height), | |
445 | make_number (0), /* not accurate */ | |
446 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
447 | + window_text_bottom_y (w)), | |
448 | make_number (0)); | |
449 | } | |
b3a10345 | 450 | |
536833ab | 451 | CHECK_NUMBER (line); |
7bbc67d2 | 452 | n = XINT (line); |
536833ab KS |
453 | |
454 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
455 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
456 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 457 | i = 0; |
536833ab KS |
458 | |
459 | while ((n < 0 || i < n) | |
460 | && row <= end_row && row->enabled_p | |
461 | && row->y + row->height < max_y) | |
462 | row++, i++; | |
b3a10345 | 463 | |
536833ab KS |
464 | if (row > end_row || !row->enabled_p) |
465 | return Qnil; | |
466 | ||
7bbc67d2 | 467 | if (++n < 0) |
536833ab KS |
468 | { |
469 | if (-n > i) | |
470 | return Qnil; | |
7bbc67d2 KS |
471 | row += n; |
472 | i += n; | |
b3a10345 KS |
473 | } |
474 | ||
7bbc67d2 | 475 | found_row: |
536833ab KS |
476 | crop = max (0, (row->y + row->height) - max_y); |
477 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 478 | make_number (i), |
536833ab KS |
479 | make_number (row->y), |
480 | make_number (crop)); | |
b3a10345 KS |
481 | } |
482 | ||
536833ab | 483 | |
7ab12479 JB |
484 | \f |
485 | static struct window * | |
486 | decode_window (window) | |
487 | register Lisp_Object window; | |
488 | { | |
265a9e55 | 489 | if (NILP (window)) |
7ab12479 JB |
490 | return XWINDOW (selected_window); |
491 | ||
b7826503 | 492 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
493 | return XWINDOW (window); |
494 | } | |
495 | ||
6b61353c KH |
496 | static struct window * |
497 | decode_any_window (window) | |
498 | register Lisp_Object window; | |
499 | { | |
500 | if (NILP (window)) | |
501 | return XWINDOW (selected_window); | |
502 | ||
503 | CHECK_WINDOW (window); | |
504 | return XWINDOW (window); | |
505 | } | |
506 | ||
7ab12479 | 507 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
508 | doc: /* Return the buffer that WINDOW is displaying. |
509 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 510 | (window) |
7ab12479 JB |
511 | Lisp_Object window; |
512 | { | |
513 | return decode_window (window)->buffer; | |
514 | } | |
515 | ||
516 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
8fef9de1 MR |
517 | doc: /* Return the number of lines in WINDOW. |
518 | WINDOW defaults to the selected window. | |
519 | ||
520 | The return value includes WINDOW's mode line and header line, if any. */) | |
fdb82f93 | 521 | (window) |
7ab12479 JB |
522 | Lisp_Object window; |
523 | { | |
6b61353c | 524 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
525 | } |
526 | ||
527 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 | 528 | doc: /* Return the number of display columns in WINDOW. |
d653c8cc MR |
529 | WINDOW defaults to the selected window. |
530 | ||
531 | Note: The return value is the number of columns available for text in | |
532 | WINDOW. If you want to find out how many columns WINDOW takes up, use | |
533 | (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
fdb82f93 | 534 | (window) |
7ab12479 JB |
535 | Lisp_Object window; |
536 | { | |
6b61353c | 537 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
538 | } |
539 | ||
35ea56c9 MR |
540 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
541 | doc: /* Return t if WINDOW is as wide as its frame. | |
542 | WINDOW defaults to the selected window. */) | |
543 | (window) | |
544 | Lisp_Object window; | |
545 | { | |
546 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
547 | } | |
548 | ||
7ab12479 | 549 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
550 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
551 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 552 | (window) |
7ab12479 JB |
553 | Lisp_Object window; |
554 | { | |
555 | return decode_window (window)->hscroll; | |
556 | } | |
557 | ||
558 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 559 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 560 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
561 | |
562 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 563 | window so that the location of point moves off-window. */) |
fdb82f93 | 564 | (window, ncol) |
ea68264b | 565 | Lisp_Object window, ncol; |
7ab12479 | 566 | { |
ea68264b GM |
567 | struct window *w = decode_window (window); |
568 | int hscroll; | |
7ab12479 | 569 | |
b7826503 | 570 | CHECK_NUMBER (ncol); |
ea68264b | 571 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 572 | |
ea68264b GM |
573 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
574 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 575 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 576 | |
c67fa410 | 577 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
578 | return ncol; |
579 | } | |
580 | ||
190eb263 RS |
581 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
582 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 583 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 584 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
585 | See `set-window-redisplay-end-trigger' for more information. */) |
586 | (window) | |
190eb263 RS |
587 | Lisp_Object window; |
588 | { | |
589 | return decode_window (window)->redisplay_end_trigger; | |
590 | } | |
591 | ||
592 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
593 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
594 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
595 | VALUE should be a buffer position (typically a marker) or nil. | |
596 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
597 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
598 | with two arguments: WINDOW, and the end trigger value. | |
599 | Afterwards the end-trigger value is reset to nil. */) | |
600 | (window, value) | |
190eb263 RS |
601 | register Lisp_Object window, value; |
602 | { | |
603 | register struct window *w; | |
604 | ||
605 | w = decode_window (window); | |
606 | w->redisplay_end_trigger = value; | |
607 | return value; | |
608 | } | |
609 | ||
7ab12479 | 610 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 611 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
612 | The list has the form (LEFT TOP RIGHT BOTTOM). |
613 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
614 | all relative to 0, 0 at top left corner of frame. | |
615 | ||
616 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
617 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
618 | The edges include the space used by WINDOW's scroll bar, display | |
619 | margins, fringes, header line, and/or mode line. For the edges of | |
620 | just the text area, use `window-inside-edges'. */) | |
fdb82f93 | 621 | (window) |
7ab12479 JB |
622 | Lisp_Object window; |
623 | { | |
6b61353c | 624 | register struct window *w = decode_any_window (window); |
7ab12479 | 625 | |
949cf20f KS |
626 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
627 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
628 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
629 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
630 | Qnil)))); | |
7ab12479 JB |
631 | } |
632 | ||
c99a9eb3 RS |
633 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
634 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
635 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
636 | the top left corner of the frame. | |
637 | ||
638 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
639 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
640 | The pixel edges include the space used by WINDOW's scroll bar, display | |
641 | margins, fringes, header line, and/or mode line. For the pixel edges | |
642 | of just the text area, use `window-inside-pixel-edges'. */) | |
c99a9eb3 RS |
643 | (window) |
644 | Lisp_Object window; | |
645 | { | |
6b61353c | 646 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
647 | |
648 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
649 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
650 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
651 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
652 | Qnil)))); | |
653 | } | |
654 | ||
9d5405ec J |
655 | static void |
656 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) | |
657 | { | |
658 | struct frame *f = XFRAME (w->frame); | |
659 | *add_y = f->top_pos; | |
660 | #ifdef FRAME_MENUBAR_HEIGHT | |
661 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
662 | #endif | |
663 | #ifdef FRAME_TOOLBAR_HEIGHT | |
664 | *add_y += FRAME_TOOLBAR_HEIGHT (f); | |
665 | #endif | |
666 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
667 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
668 | #endif | |
669 | *add_x = f->left_pos; | |
670 | } | |
671 | ||
672 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
673 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
674 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
675 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
676 | the top left corner of the display. | |
677 | ||
678 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
679 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
680 | The pixel edges include the space used by WINDOW's scroll bar, display | |
681 | margins, fringes, header line, and/or mode line. For the pixel edges | |
682 | of just the text area, use `window-inside-pixel-edges'. */) | |
683 | (window) | |
684 | Lisp_Object window; | |
685 | { | |
686 | register struct window *w = decode_any_window (window); | |
687 | int add_x, add_y; | |
688 | calc_absolute_offset(w, &add_x, &add_y); | |
689 | ||
690 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
691 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
692 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
693 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
694 | Qnil)))); | |
695 | } | |
696 | ||
c99a9eb3 RS |
697 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
698 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
699 | The list has the form (LEFT TOP RIGHT BOTTOM). |
700 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
701 | all relative to 0, 0 at top left corner of frame. | |
702 | ||
703 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
704 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
705 | The inside edges do not include the space used by the WINDOW's scroll | |
706 | bar, display margins, fringes, header line, and/or mode line. */) | |
c99a9eb3 RS |
707 | (window) |
708 | Lisp_Object window; | |
709 | { | |
6b61353c | 710 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
711 | |
712 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
713 | + WINDOW_LEFT_MARGIN_COLS (w) | |
714 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
715 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
716 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 717 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
718 | - WINDOW_RIGHT_MARGIN_COLS (w) |
719 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
720 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
721 | - WINDOW_MODE_LINE_LINES (w))); | |
722 | } | |
723 | ||
724 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 725 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
726 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
727 | the top left corner of the frame. | |
728 | ||
729 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
730 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
731 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 RS |
732 | display margins, fringes, header line, and/or mode line. */) |
733 | (window) | |
734 | Lisp_Object window; | |
735 | { | |
6b61353c | 736 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
737 | |
738 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
739 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
740 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
741 | make_number (WINDOW_TOP_EDGE_Y (w) | |
742 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 743 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
744 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
745 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
746 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
747 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
748 | } | |
749 | ||
9d5405ec J |
750 | DEFUN ("window-inside-absolute-pixel-edges", |
751 | Fwindow_inside_absolute_pixel_edges, | |
752 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
753 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
754 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
755 | the top left corner of the display. | |
756 | ||
757 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
758 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
759 | The inside edges do not include the space used by WINDOW's scroll bar, | |
760 | display margins, fringes, header line, and/or mode line. */) | |
761 | (window) | |
762 | Lisp_Object window; | |
763 | { | |
764 | register struct window *w = decode_any_window (window); | |
765 | int add_x, add_y; | |
766 | calc_absolute_offset(w, &add_x, &add_y); | |
767 | ||
768 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
769 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
770 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
771 | make_number (WINDOW_TOP_EDGE_Y (w) | |
772 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
773 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
774 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
775 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
776 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
777 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
778 | } | |
779 | ||
fbad6f9a | 780 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 781 | If it is not, return ON_NOTHING; |
d5783c40 JB |
782 | if it is in the window's text area, |
783 | set *x and *y to its location relative to the upper left corner | |
784 | of the window, and | |
341f3858 KS |
785 | return ON_TEXT; |
786 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 787 | if it is on the border between the window and its right sibling, |
341f3858 | 788 | return ON_VERTICAL_BORDER. |
6487f669 RS |
789 | if it is on a scroll bar, |
790 | return ON_SCROLL_BAR. | |
341f3858 | 791 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 792 | if it is in left or right fringe of the window, |
341f3858 KS |
793 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
794 | to window-relative coordinates; | |
49b996e7 | 795 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
796 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
797 | to window-relative coordinates. | |
5500c422 GM |
798 | |
799 | X and Y are frame relative pixel coordinates. */ | |
800 | ||
7442878f | 801 | static enum window_part |
d5783c40 JB |
802 | coordinates_in_window (w, x, y) |
803 | register struct window *w; | |
804 | register int *x, *y; | |
805 | { | |
b0228ace GM |
806 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
807 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 808 | enum window_part part; |
949cf20f KS |
809 | int ux = FRAME_COLUMN_WIDTH (f); |
810 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
811 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
812 | /* The width of the area where the vertical line can be dragged. |
813 | (Between mode lines for instance. */ | |
814 | int grabbable_width = ux; | |
949cf20f | 815 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 816 | |
466539bc EZ |
817 | /* In what's below, we subtract 1 when computing right_x because we |
818 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
819 | if (w->pseudo_window_p) |
820 | { | |
821 | left_x = 0; | |
949cf20f KS |
822 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
823 | top_y = WINDOW_TOP_EDGE_Y (w); | |
824 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
825 | } |
826 | else | |
827 | { | |
949cf20f KS |
828 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
829 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
830 | top_y = WINDOW_TOP_EDGE_Y (w); | |
831 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 832 | } |
37962e60 | 833 | |
949cf20f KS |
834 | /* Outside any interesting row? */ |
835 | if (*y < top_y || *y >= bottom_y) | |
836 | return ON_NOTHING; | |
837 | ||
1cb794ba GM |
838 | /* On the mode line or header line? If it's near the start of |
839 | the mode or header line of window that's has a horizontal | |
840 | sibling, say it's on the vertical line. That's to be able | |
841 | to resize windows horizontally in case we're using toolkit | |
842 | scroll bars. */ | |
b0228ace | 843 | |
1cb794ba | 844 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 845 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 846 | { |
949cf20f KS |
847 | part = ON_MODE_LINE; |
848 | ||
849 | header_vertical_border_check: | |
b0228ace GM |
850 | /* We're somewhere on the mode line. We consider the place |
851 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 852 | as the vertical border. If scroll bars on the left, |
b0228ace | 853 | return the right window. */ |
949cf20f KS |
854 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
855 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 856 | { |
1ea40aa2 | 857 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 858 | { |
3f489dc7 KS |
859 | /* Convert X and Y to window relative coordinates. |
860 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
861 | *x = max (0, *x - x0); |
862 | *y -= top_y; | |
863 | return ON_VERTICAL_BORDER; | |
864 | } | |
b0228ace | 865 | } |
79fd290e | 866 | else |
b0228ace | 867 | { |
f6ef1e65 MR |
868 | /* Make sure we're not at the rightmost position of a |
869 | mode-/header-line and there's yet another window on | |
870 | the right. (Bug#1372) */ | |
871 | if ((WINDOW_RIGHTMOST_P (w) || *x < x1) | |
872 | && eabs (*x - x1) < grabbable_width) | |
f8c62b70 | 873 | { |
3f489dc7 KS |
874 | /* Convert X and Y to window relative coordinates. |
875 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
876 | *x = min (x1, *x) - x0; |
877 | *y -= top_y; | |
878 | return ON_VERTICAL_BORDER; | |
879 | } | |
b0228ace | 880 | } |
949cf20f | 881 | |
cb639b8f KS |
882 | if (*x < x0 || *x >= x1) |
883 | return ON_NOTHING; | |
884 | ||
a5303820 KS |
885 | /* Convert X and Y to window relative coordinates. |
886 | Mode line starts at left edge of window. */ | |
887 | *x -= x0; | |
888 | *y -= top_y; | |
949cf20f | 889 | return part; |
b0228ace | 890 | } |
949cf20f KS |
891 | |
892 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 893 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 894 | { |
949cf20f KS |
895 | part = ON_HEADER_LINE; |
896 | goto header_vertical_border_check; | |
1cb794ba | 897 | } |
949cf20f | 898 | |
cb639b8f KS |
899 | if (*x < x0 || *x >= x1) |
900 | return ON_NOTHING; | |
901 | ||
949cf20f KS |
902 | /* Outside any interesting column? */ |
903 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
904 | { |
905 | *y -= top_y; | |
906 | return ON_SCROLL_BAR; | |
907 | } | |
949cf20f KS |
908 | |
909 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
910 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 911 | |
949cf20f KS |
912 | text_left = window_box_left (w, TEXT_AREA); |
913 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
914 | ||
915 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 916 | { |
447e9da0 | 917 | if (!w->pseudo_window_p |
949cf20f | 918 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 919 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 920 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 921 | { |
3f489dc7 KS |
922 | /* Convert X and Y to window relative coordinates. |
923 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
924 | *x = min (right_x, *x) - left_x; |
925 | *y -= top_y; | |
926 | return ON_VERTICAL_BORDER; | |
927 | } | |
fbad6f9a | 928 | } |
447e9da0 GM |
929 | else |
930 | { | |
931 | /* Need to say "*x > right_x" rather than >=, since on character | |
932 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
933 | if (!w->pseudo_window_p |
934 | && !WINDOW_RIGHTMOST_P (w) | |
935 | && *x > right_x - ux) | |
b0228ace GM |
936 | { |
937 | /* On the border on the right side of the window? Assume that | |
938 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
939 | *x = min (right_x, *x) - left_x; |
940 | *y -= top_y; | |
949cf20f | 941 | return ON_VERTICAL_BORDER; |
b0228ace | 942 | } |
447e9da0 | 943 | } |
b0228ace | 944 | |
949cf20f KS |
945 | if (*x < text_left) |
946 | { | |
947 | if (lmargin_width > 0 | |
948 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
949 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
950 | : (*x < left_x + lmargin_width))) | |
a5303820 | 951 | { |
6b61353c | 952 | *x -= left_x; |
a5303820 KS |
953 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
954 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
955 | *y -= top_y; | |
956 | return ON_LEFT_MARGIN; | |
957 | } | |
949cf20f KS |
958 | |
959 | /* Convert X and Y to window-relative pixel coordinates. */ | |
960 | *x -= left_x; | |
961 | *y -= top_y; | |
962 | return ON_LEFT_FRINGE; | |
963 | } | |
964 | ||
965 | if (*x >= text_right) | |
966 | { | |
967 | if (rmargin_width > 0 | |
968 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
969 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
970 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 971 | { |
66d41723 KS |
972 | *x -= right_x - rmargin_width; |
973 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
974 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
975 | *y -= top_y; |
976 | return ON_RIGHT_MARGIN; | |
977 | } | |
949cf20f KS |
978 | |
979 | /* Convert X and Y to window-relative pixel coordinates. */ | |
980 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
981 | *y -= top_y; | |
982 | return ON_RIGHT_FRINGE; | |
983 | } | |
984 | ||
985 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 986 | *x -= text_left; |
949cf20f KS |
987 | *y -= top_y; |
988 | return ON_TEXT; | |
d5783c40 JB |
989 | } |
990 | ||
b0228ace | 991 | |
d5783c40 | 992 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
993 | Scoordinates_in_window_p, 2, 2, 0, |
994 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
995 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
996 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 997 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
998 | frame. |
999 | If COORDINATES are in the text portion of WINDOW, | |
1000 | the coordinates relative to the window are returned. | |
1001 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1002 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1003 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1004 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1005 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1006 | `vertical-line' is returned. |
1007 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1008 | or `right-margin' is returned. */) | |
fdb82f93 | 1009 | (coordinates, window) |
d5783c40 JB |
1010 | register Lisp_Object coordinates, window; |
1011 | { | |
5500c422 GM |
1012 | struct window *w; |
1013 | struct frame *f; | |
d5783c40 | 1014 | int x, y; |
5500c422 | 1015 | Lisp_Object lx, ly; |
d5783c40 | 1016 | |
6b61353c | 1017 | CHECK_WINDOW (window); |
5500c422 GM |
1018 | w = XWINDOW (window); |
1019 | f = XFRAME (w->frame); | |
b7826503 | 1020 | CHECK_CONS (coordinates); |
5500c422 GM |
1021 | lx = Fcar (coordinates); |
1022 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1023 | CHECK_NUMBER_OR_FLOAT (lx); |
1024 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1025 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1026 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
1027 | |
1028 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 1029 | { |
7442878f | 1030 | case ON_NOTHING: |
d5783c40 JB |
1031 | return Qnil; |
1032 | ||
7442878f GM |
1033 | case ON_TEXT: |
1034 | /* X and Y are now window relative pixel coordinates. Convert | |
1035 | them to canonical char units before returning them. */ | |
949cf20f KS |
1036 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1037 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1038 | |
7442878f | 1039 | case ON_MODE_LINE: |
d5783c40 | 1040 | return Qmode_line; |
37962e60 | 1041 | |
7442878f | 1042 | case ON_VERTICAL_BORDER: |
e5d77022 | 1043 | return Qvertical_line; |
d5783c40 | 1044 | |
7442878f | 1045 | case ON_HEADER_LINE: |
045dee35 | 1046 | return Qheader_line; |
5500c422 | 1047 | |
7442878f GM |
1048 | case ON_LEFT_FRINGE: |
1049 | return Qleft_fringe; | |
177c0ea7 | 1050 | |
7442878f GM |
1051 | case ON_RIGHT_FRINGE: |
1052 | return Qright_fringe; | |
fbad6f9a | 1053 | |
49b996e7 GM |
1054 | case ON_LEFT_MARGIN: |
1055 | return Qleft_margin; | |
177c0ea7 | 1056 | |
49b996e7 GM |
1057 | case ON_RIGHT_MARGIN: |
1058 | return Qright_margin; | |
1059 | ||
6487f669 RS |
1060 | case ON_SCROLL_BAR: |
1061 | /* Historically we are supposed to return nil in this case. */ | |
1062 | return Qnil; | |
1063 | ||
d5783c40 JB |
1064 | default: |
1065 | abort (); | |
1066 | } | |
1067 | } | |
1068 | ||
67492200 GM |
1069 | |
1070 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1071 | Check if window W contains coordinates specified by USER_DATA which |
1072 | is actually a pointer to a struct check_window_data CW. | |
1073 | ||
1074 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1075 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1076 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1077 | zero from this function to stop iterating over windows. */ |
1078 | ||
1079 | struct check_window_data | |
1080 | { | |
1081 | Lisp_Object *window; | |
341f3858 KS |
1082 | int *x, *y; |
1083 | enum window_part *part; | |
f95464e4 | 1084 | }; |
67492200 GM |
1085 | |
1086 | static int | |
f95464e4 | 1087 | check_window_containing (w, user_data) |
67492200 | 1088 | struct window *w; |
f95464e4 | 1089 | void *user_data; |
67492200 | 1090 | { |
f95464e4 | 1091 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1092 | enum window_part found; |
1093 | int continue_p = 1; | |
67492200 | 1094 | |
f95464e4 | 1095 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1096 | if (found != ON_NOTHING) |
67492200 | 1097 | { |
341f3858 | 1098 | *cw->part = found; |
f95464e4 | 1099 | XSETWINDOW (*cw->window, w); |
7442878f | 1100 | continue_p = 0; |
67492200 | 1101 | } |
177c0ea7 | 1102 | |
7442878f | 1103 | return continue_p; |
67492200 GM |
1104 | } |
1105 | ||
1106 | ||
5500c422 | 1107 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1108 | return it as a Lisp_Object. |
1109 | ||
1110 | If X, Y is on one of the window's special `window_part' elements, | |
1111 | set *PART to the id of that element, and return X and Y converted | |
1112 | to window relative coordinates in WX and WY. | |
1113 | ||
341f3858 | 1114 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1115 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1116 | ||
1117 | This function was previously implemented with a loop cycling over | |
1118 | windows with Fnext_window, and starting with the frame's selected | |
1119 | window. It turned out that this doesn't work with an | |
1120 | implementation of next_window using Vwindow_list, because | |
1121 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1122 | tree of F when this function is called asynchronously from | |
1123 | note_mouse_highlight. The original loop didn't terminate in this | |
1124 | case. */ | |
5500c422 | 1125 | |
7ab12479 | 1126 | Lisp_Object |
949cf20f | 1127 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1128 | struct frame *f; |
7ab12479 | 1129 | int x, y; |
341f3858 | 1130 | enum window_part *part; |
949cf20f | 1131 | int *wx, *wy; |
9ea173e8 | 1132 | int tool_bar_p; |
7ab12479 | 1133 | { |
67492200 | 1134 | Lisp_Object window; |
f95464e4 | 1135 | struct check_window_data cw; |
341f3858 KS |
1136 | enum window_part dummy; |
1137 | ||
1138 | if (part == 0) | |
1139 | part = &dummy; | |
5500c422 | 1140 | |
67492200 | 1141 | window = Qnil; |
f95464e4 GM |
1142 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1143 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1144 | |
67492200 GM |
1145 | /* If not found above, see if it's in the tool bar window, if a tool |
1146 | bar exists. */ | |
1147 | if (NILP (window) | |
1148 | && tool_bar_p | |
1149 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1150 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1151 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1152 | != ON_NOTHING)) | |
5500c422 | 1153 | { |
341f3858 | 1154 | *part = ON_TEXT; |
67492200 | 1155 | window = f->tool_bar_window; |
5500c422 | 1156 | } |
37962e60 | 1157 | |
949cf20f KS |
1158 | if (wx) *wx = x; |
1159 | if (wy) *wy = y; | |
1160 | ||
67492200 | 1161 | return window; |
7ab12479 JB |
1162 | } |
1163 | ||
ab17c3f2 | 1164 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1165 | doc: /* Return window containing coordinates X and Y on FRAME. |
1166 | If omitted, FRAME defaults to the currently selected frame. | |
1167 | The top left corner of the frame is considered to be row 0, | |
1168 | column 0. */) | |
1169 | (x, y, frame) | |
1170 | Lisp_Object x, y, frame; | |
7ab12479 | 1171 | { |
5500c422 | 1172 | struct frame *f; |
7ab12479 | 1173 | |
44fa5b1e | 1174 | if (NILP (frame)) |
1ae1a37d | 1175 | frame = selected_frame; |
b7826503 | 1176 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1177 | f = XFRAME (frame); |
7ab12479 | 1178 | |
5500c422 | 1179 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1180 | CHECK_NUMBER_OR_FLOAT (x); |
1181 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1182 | |
177c0ea7 | 1183 | return window_from_coordinates (f, |
2c77cf3b RS |
1184 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1185 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1186 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1187 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1188 | 0, 0, 0, 0); |
7ab12479 JB |
1189 | } |
1190 | ||
1191 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1192 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1193 | WINDOW defaults to the selected window. |
1194 | ||
fdb82f93 PJ |
1195 | For a nonselected window, this is the value point would have |
1196 | if that window were selected. | |
1197 | ||
1198 | Note that, when WINDOW is the selected window and its buffer | |
1199 | is also currently selected, the value returned is the same as (point). | |
1200 | It would be more strictly correct to return the `top-level' value | |
1201 | of point, outside of any save-excursion forms. | |
1202 | But that is hard to define. */) | |
1203 | (window) | |
7ab12479 JB |
1204 | Lisp_Object window; |
1205 | { | |
1206 | register struct window *w = decode_window (window); | |
1207 | ||
1208 | if (w == XWINDOW (selected_window) | |
1209 | && current_buffer == XBUFFER (w->buffer)) | |
1210 | return Fpoint (); | |
1211 | return Fmarker_position (w->pointm); | |
1212 | } | |
1213 | ||
1214 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1215 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1216 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1217 | This is updated by redisplay or by calling `set-window-start'. */) |
1218 | (window) | |
7ab12479 JB |
1219 | Lisp_Object window; |
1220 | { | |
1221 | return Fmarker_position (decode_window (window)->start); | |
1222 | } | |
1223 | ||
8646118f RS |
1224 | /* This is text temporarily removed from the doc string below. |
1225 | ||
fdb82f93 PJ |
1226 | This function returns nil if the position is not currently known. |
1227 | That happens when redisplay is preempted and doesn't finish. | |
1228 | If in that case you want to compute where the end of the window would | |
1229 | have been if redisplay had finished, do this: | |
1230 | (save-excursion | |
1231 | (goto-char (window-start window)) | |
1232 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1233 | (point))") */ |
1234 | ||
478292ed | 1235 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1236 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1237 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1238 | This is updated by redisplay, when it runs to completion. |
1239 | Simply changing the buffer text or setting `window-start' | |
1240 | does not update this value. | |
a0a37a6f LT |
1241 | Return nil if there is no recorded value. \(This can happen if the |
1242 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1243 | If UPDATE is non-nil, compute the up-to-date position |
1244 | if it isn't already recorded. */) | |
1245 | (window, update) | |
478292ed | 1246 | Lisp_Object window, update; |
7ab12479 JB |
1247 | { |
1248 | Lisp_Object value; | |
1249 | struct window *w = decode_window (window); | |
5a41ab94 | 1250 | Lisp_Object buf; |
31790df3 | 1251 | struct buffer *b; |
5a41ab94 RS |
1252 | |
1253 | buf = w->buffer; | |
b7826503 | 1254 | CHECK_BUFFER (buf); |
b3a10345 | 1255 | b = XBUFFER (buf); |
5a41ab94 | 1256 | |
8646118f | 1257 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1258 | /* If we don't know the end position, return nil. |
1259 | The user can compute it with vertical-motion if he wants to. | |
1260 | It would be nicer to do it automatically, | |
1261 | but that's so slow that it would probably bother people. */ | |
1262 | if (NILP (w->window_end_valid)) | |
1263 | return Qnil; | |
8646118f | 1264 | #endif |
7250968e | 1265 | |
478292ed RS |
1266 | if (! NILP (update) |
1267 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1268 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1269 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1270 | && !noninteractive) |
478292ed | 1271 | { |
cbc099e5 GM |
1272 | struct text_pos startp; |
1273 | struct it it; | |
b3a10345 KS |
1274 | struct buffer *old_buffer = NULL; |
1275 | ||
1276 | /* Cannot use Fvertical_motion because that function doesn't | |
1277 | cope with variable-height lines. */ | |
1278 | if (b != current_buffer) | |
1279 | { | |
1280 | old_buffer = current_buffer; | |
1281 | set_buffer_internal (b); | |
1282 | } | |
2d6d9df0 GM |
1283 | |
1284 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1285 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1286 | `-l' containing a call to `rmail' with subsequent other |
1287 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1288 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1289 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1290 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1291 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1292 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1293 | else |
cbc099e5 GM |
1294 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1295 | ||
cbc099e5 GM |
1296 | start_display (&it, w, startp); |
1297 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1298 | if (it.current_y < it.last_visible_y) |
1299 | move_it_past_eol (&it); | |
cbc099e5 | 1300 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1301 | |
99593a9d GM |
1302 | if (old_buffer) |
1303 | set_buffer_internal (old_buffer); | |
478292ed RS |
1304 | } |
1305 | else | |
b3a10345 | 1306 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1307 | |
1308 | return value; | |
1309 | } | |
1310 | ||
1311 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1312 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1313 | Return POS. */) | |
fdb82f93 | 1314 | (window, pos) |
7ab12479 JB |
1315 | Lisp_Object window, pos; |
1316 | { | |
1317 | register struct window *w = decode_window (window); | |
1318 | ||
b7826503 | 1319 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1320 | if (w == XWINDOW (selected_window) |
1321 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1322 | Fgoto_char (pos); |
1323 | else | |
1324 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1325 | |
0685cb3c GM |
1326 | /* We have to make sure that redisplay updates the window to show |
1327 | the new value of point. */ | |
1328 | if (!EQ (window, selected_window)) | |
799417bd | 1329 | ++windows_or_buffers_changed; |
177c0ea7 | 1330 | |
7ab12479 JB |
1331 | return pos; |
1332 | } | |
1333 | ||
1334 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1335 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1336 | WINDOW defaults to the selected window. Return POS. |
1337 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1338 | overriding motion of point in order to display at this exact start. */) | |
fdb82f93 | 1339 | (window, pos, noforce) |
7ab12479 JB |
1340 | Lisp_Object window, pos, noforce; |
1341 | { | |
1342 | register struct window *w = decode_window (window); | |
1343 | ||
b7826503 | 1344 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1345 | set_marker_restricted (w->start, pos, w->buffer); |
1346 | /* this is not right, but much easier than doing what is right. */ | |
1347 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1348 | if (NILP (noforce)) |
7ab12479 JB |
1349 | w->force_start = Qt; |
1350 | w->update_mode_line = Qt; | |
d834a2e9 | 1351 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1352 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1353 | if (!EQ (window, selected_window)) |
1354 | windows_or_buffers_changed++; | |
ce7fae7d | 1355 | |
7ab12479 JB |
1356 | return pos; |
1357 | } | |
1358 | ||
d653c8cc | 1359 | |
7ab12479 | 1360 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1361 | 0, 1, 0, |
1362 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1363 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1364 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1365 | never called with WINDOW as its argument, or the value set by that | |
1366 | function was internally reset since its last call. WINDOW defaults to | |
1367 | the selected window. | |
1368 | ||
1369 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1370 | from displaying another buffer in it. `get-lru-window' and | |
1371 | `get-largest-window' treat dedicated windows specially. | |
1372 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1373 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1374 | ||
1375 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1376 | window, unless that window is "strongly" dedicated to its buffer, that | |
1377 | is the value returned by `window-dedicated-p' is t. */) | |
fdb82f93 | 1378 | (window) |
7ab12479 JB |
1379 | Lisp_Object window; |
1380 | { | |
1381 | return decode_window (window)->dedicated; | |
1382 | } | |
1383 | ||
d207b766 RS |
1384 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1385 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1386 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1387 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1388 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1389 | Return FLAG. |
1390 | ||
7bfac547 MR |
1391 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1392 | from displaying another buffer in it. `get-lru-window' and | |
1393 | `get-largest-window' treat dedicated windows specially. | |
1394 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1395 | `kill-buffer' can delete a dedicated window and the containing | |
1396 | frame. | |
1397 | ||
1398 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1399 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1400 | displayed by a window, unless that window is strongly dedicated to its | |
1401 | buffer. If and when `set-window-buffer' displays another buffer in a | |
1402 | window, it also makes sure that the window is not marked as dedicated. */) | |
d653c8cc MR |
1403 | (window, flag) |
1404 | Lisp_Object window, flag; | |
7ab12479 JB |
1405 | { |
1406 | register struct window *w = decode_window (window); | |
1407 | ||
d653c8cc | 1408 | w->dedicated = flag; |
7ab12479 JB |
1409 | return w->dedicated; |
1410 | } | |
1411 | ||
d653c8cc | 1412 | |
cfbb2395 JB |
1413 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1414 | 0, 1, 0, | |
d653c8cc MR |
1415 | doc: /* Return the parameters of WINDOW and their values. |
1416 | WINDOW defaults to the selected window. The return value is a list of | |
1417 | elements of the form (PARAMETER . VALUE). */) | |
cfbb2395 JB |
1418 | (window) |
1419 | Lisp_Object window; | |
1420 | { | |
927abf37 | 1421 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1422 | } |
1423 | ||
1424 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1425 | 2, 2, 0, | |
d653c8cc MR |
1426 | doc: /* Return WINDOW's value for PARAMETER. |
1427 | WINDOW defaults to the selected window. */) | |
cfbb2395 JB |
1428 | (window, parameter) |
1429 | Lisp_Object window, parameter; | |
1430 | { | |
927abf37 JB |
1431 | Lisp_Object result; |
1432 | ||
1433 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1434 | return CDR_SAFE (result); | |
cfbb2395 JB |
1435 | } |
1436 | ||
cfbb2395 JB |
1437 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1438 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1439 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1440 | WINDOW defaults to the selected window. Return VALUE. */) | |
cfbb2395 JB |
1441 | (window, parameter, value) |
1442 | Lisp_Object window, parameter, value; | |
1443 | { | |
1444 | register struct window *w = decode_window (window); | |
1445 | Lisp_Object old_alist_elt; | |
1446 | ||
1447 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1448 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1449 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1450 | else | |
1451 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1452 | return value; |
cfbb2395 JB |
1453 | } |
1454 | ||
1455 | ||
7ab12479 JB |
1456 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1457 | 0, 1, 0, | |
c85322d0 EZ |
1458 | doc: /* Return the display-table that WINDOW is using. |
1459 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1460 | (window) |
7ab12479 JB |
1461 | Lisp_Object window; |
1462 | { | |
1463 | return decode_window (window)->display_table; | |
1464 | } | |
1465 | ||
5500c422 GM |
1466 | /* Get the display table for use on window W. This is either W's |
1467 | display table or W's buffer's display table. Ignore the specified | |
1468 | tables if they are not valid; if no valid table is specified, | |
1469 | return 0. */ | |
7ab12479 | 1470 | |
319315f1 | 1471 | struct Lisp_Char_Table * |
7ab12479 JB |
1472 | window_display_table (w) |
1473 | struct window *w; | |
1474 | { | |
c756cdbe GM |
1475 | struct Lisp_Char_Table *dp = NULL; |
1476 | ||
1477 | if (DISP_TABLE_P (w->display_table)) | |
1478 | dp = XCHAR_TABLE (w->display_table); | |
1479 | else if (BUFFERP (w->buffer)) | |
1480 | { | |
1481 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1482 | |
c756cdbe GM |
1483 | if (DISP_TABLE_P (b->display_table)) |
1484 | dp = XCHAR_TABLE (b->display_table); | |
1485 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1486 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1487 | } | |
171d003c | 1488 | |
c756cdbe | 1489 | return dp; |
7ab12479 JB |
1490 | } |
1491 | ||
3a2712f9 | 1492 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1493 | doc: /* Set WINDOW's display-table to TABLE. */) |
1494 | (window, table) | |
7ab12479 JB |
1495 | register Lisp_Object window, table; |
1496 | { | |
1497 | register struct window *w; | |
7ab12479 JB |
1498 | |
1499 | w = decode_window (window); | |
1500 | w->display_table = table; | |
1501 | return table; | |
1502 | } | |
1503 | \f | |
1504 | /* Record info on buffer window w is displaying | |
1505 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1506 | static void |
7ab12479 JB |
1507 | unshow_buffer (w) |
1508 | register struct window *w; | |
1509 | { | |
12cae7c0 | 1510 | Lisp_Object buf; |
b73ea88e | 1511 | struct buffer *b; |
7ab12479 | 1512 | |
12cae7c0 | 1513 | buf = w->buffer; |
b73ea88e RS |
1514 | b = XBUFFER (buf); |
1515 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1516 | abort (); |
1517 | ||
573f41ab | 1518 | #if 0 |
7ab12479 JB |
1519 | if (w == XWINDOW (selected_window) |
1520 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1521 | /* Do this except when the selected window's buffer | |
1522 | is being removed from some other window. */ | |
573f41ab RS |
1523 | #endif |
1524 | /* last_window_start records the start position that this buffer | |
1525 | had in the last window to be disconnected from it. | |
1526 | Now that this statement is unconditional, | |
1527 | it is possible for the buffer to be displayed in the | |
1528 | selected window, while last_window_start reflects another | |
1529 | window which was recently showing the same buffer. | |
1530 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1531 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1532 | |
1533 | /* Point in the selected window's buffer | |
1534 | is actually stored in that buffer, and the window's pointm isn't used. | |
1535 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1536 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1537 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1538 | && !(WINDOWP (b->last_selected_window) |
1539 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1540 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1541 | temp_set_point_both (b, |
1542 | clip_to_bounds (BUF_BEGV (b), | |
1543 | XMARKER (w->pointm)->charpos, | |
1544 | BUF_ZV (b)), | |
1545 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1546 | marker_byte_position (w->pointm), | |
1547 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1548 | |
8801a864 KR |
1549 | if (WINDOWP (b->last_selected_window) |
1550 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1551 | b->last_selected_window = Qnil; |
7ab12479 JB |
1552 | } |
1553 | ||
1554 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1555 | static void |
7ab12479 JB |
1556 | replace_window (old, replacement) |
1557 | Lisp_Object old, replacement; | |
1558 | { | |
1559 | register Lisp_Object tem; | |
1560 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1561 | ||
44fa5b1e JB |
1562 | /* If OLD is its frame's root_window, then replacement is the new |
1563 | root_window for that frame. */ | |
7ab12479 | 1564 | |
7f4161e0 | 1565 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1566 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1567 | |
949cf20f KS |
1568 | p->left_col = o->left_col; |
1569 | p->top_line = o->top_line; | |
1570 | p->total_cols = o->total_cols; | |
1571 | p->total_lines = o->total_lines; | |
5500c422 GM |
1572 | p->desired_matrix = p->current_matrix = 0; |
1573 | p->vscroll = 0; | |
1574 | bzero (&p->cursor, sizeof (p->cursor)); | |
1575 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1576 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1577 | p->phys_cursor_type = -1; | |
4b26579e | 1578 | p->phys_cursor_width = -1; |
5500c422 GM |
1579 | p->must_be_updated_p = 0; |
1580 | p->pseudo_window_p = 0; | |
1581 | XSETFASTINT (p->window_end_vpos, 0); | |
1582 | XSETFASTINT (p->window_end_pos, 0); | |
1583 | p->window_end_valid = Qnil; | |
7bbb5782 | 1584 | p->frozen_window_start_p = 0; |
949cf20f | 1585 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1586 | |
1587 | p->next = tem = o->next; | |
265a9e55 | 1588 | if (!NILP (tem)) |
7ab12479 JB |
1589 | XWINDOW (tem)->prev = replacement; |
1590 | ||
1591 | p->prev = tem = o->prev; | |
265a9e55 | 1592 | if (!NILP (tem)) |
7ab12479 JB |
1593 | XWINDOW (tem)->next = replacement; |
1594 | ||
1595 | p->parent = tem = o->parent; | |
265a9e55 | 1596 | if (!NILP (tem)) |
7ab12479 JB |
1597 | { |
1598 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1599 | XWINDOW (tem)->vchild = replacement; | |
1600 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1601 | XWINDOW (tem)->hchild = replacement; | |
1602 | } | |
1603 | ||
1604 | /*** Here, if replacement is a vertical combination | |
1605 | and so is its new parent, we should make replacement's | |
1606 | children be children of that parent instead. ***/ | |
1607 | } | |
1608 | ||
1609 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
8fef9de1 MR |
1610 | doc: /* Remove WINDOW from its frame. |
1611 | WINDOW defaults to the selected window. Return nil. | |
1612 | Signal an error when WINDOW is the only window on its frame. */) | |
fdb82f93 | 1613 | (window) |
7ab12479 | 1614 | register Lisp_Object window; |
543f5fb1 | 1615 | { |
eeca6f6f SM |
1616 | struct frame *f; |
1617 | if (NILP (window)) | |
1618 | window = selected_window; | |
dbf64827 JB |
1619 | else |
1620 | CHECK_LIVE_WINDOW (window); | |
1621 | ||
eeca6f6f | 1622 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
543f5fb1 RS |
1623 | delete_window (window); |
1624 | ||
eeca6f6f | 1625 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1626 | |
1627 | return Qnil; | |
1628 | } | |
1629 | ||
5e14b1fc | 1630 | void |
543f5fb1 RS |
1631 | delete_window (window) |
1632 | register Lisp_Object window; | |
7ab12479 JB |
1633 | { |
1634 | register Lisp_Object tem, parent, sib; | |
1635 | register struct window *p; | |
1636 | register struct window *par; | |
951f9df5 | 1637 | struct frame *f; |
7ab12479 | 1638 | |
605be8af JB |
1639 | /* Because this function is called by other C code on non-leaf |
1640 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1641 | so we can't decode_window here. */ | |
eeca6f6f | 1642 | CHECK_WINDOW (window); |
7ab12479 | 1643 | p = XWINDOW (window); |
605be8af | 1644 | |
0d384044 | 1645 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1646 | if (NILP (p->buffer) |
1647 | && NILP (p->hchild) | |
1648 | && NILP (p->vchild)) | |
296b535c | 1649 | return; |
605be8af | 1650 | |
7ab12479 | 1651 | parent = p->parent; |
265a9e55 | 1652 | if (NILP (parent)) |
7ab12479 JB |
1653 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1654 | par = XWINDOW (parent); | |
1655 | ||
1656 | windows_or_buffers_changed++; | |
67492200 | 1657 | Vwindow_list = Qnil; |
951f9df5 GM |
1658 | f = XFRAME (WINDOW_FRAME (p)); |
1659 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1660 | |
605be8af JB |
1661 | /* Are we trying to delete any frame's selected window? */ |
1662 | { | |
192c3131 | 1663 | Lisp_Object swindow, pwindow; |
605be8af | 1664 | |
0def0403 RS |
1665 | /* See if the frame's selected window is either WINDOW |
1666 | or any subwindow of it, by finding all that window's parents | |
1667 | and comparing each one with WINDOW. */ | |
192c3131 | 1668 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1669 | |
192c3131 | 1670 | while (1) |
0def0403 | 1671 | { |
192c3131 RS |
1672 | pwindow = swindow; |
1673 | while (!NILP (pwindow)) | |
1674 | { | |
1675 | if (EQ (window, pwindow)) | |
1676 | break; | |
1677 | pwindow = XWINDOW (pwindow)->parent; | |
1678 | } | |
1679 | ||
1680 | /* If the window being deleted is not a parent of SWINDOW, | |
1681 | then SWINDOW is ok as the new selected window. */ | |
1682 | if (!EQ (window, pwindow)) | |
0def0403 | 1683 | break; |
192c3131 | 1684 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1685 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1686 | |
1687 | /* If we get back to the frame's selected window, | |
1688 | it means there was no acceptable alternative, | |
1689 | so we cannot delete. */ | |
1690 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1691 | error ("Cannot delete window"); | |
0def0403 RS |
1692 | } |
1693 | ||
192c3131 RS |
1694 | /* If we need to change SWINDOW, do it. */ |
1695 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1696 | { |
605be8af JB |
1697 | /* If we're about to delete the selected window on the |
1698 | selected frame, then we should use Fselect_window to select | |
1699 | the new window. On the other hand, if we're about to | |
1700 | delete the selected window on any other frame, we shouldn't do | |
1701 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1702 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1703 | Fselect_window (swindow, Qnil); |
605be8af | 1704 | else |
192c3131 | 1705 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1706 | } |
1707 | } | |
7ab12479 | 1708 | |
0d384044 RS |
1709 | /* Now we know we can delete this one. */ |
1710 | window_deletion_count++; | |
1711 | ||
7ab12479 JB |
1712 | tem = p->buffer; |
1713 | /* tem is null for dummy parent windows | |
1714 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1715 | if (!NILP (tem)) |
7ab12479 JB |
1716 | { |
1717 | unshow_buffer (p); | |
2d0834cc SM |
1718 | unchain_marker (XMARKER (p->pointm)); |
1719 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1720 | } |
1721 | ||
05e71564 GM |
1722 | /* Free window glyph matrices. It is sure that they are allocated |
1723 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1724 | events and other events that access glyph matrices are not | |
1725 | processed while we are changing them. */ | |
1726 | BLOCK_INPUT; | |
951f9df5 | 1727 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1728 | |
7ab12479 | 1729 | tem = p->next; |
265a9e55 | 1730 | if (!NILP (tem)) |
7ab12479 JB |
1731 | XWINDOW (tem)->prev = p->prev; |
1732 | ||
1733 | tem = p->prev; | |
265a9e55 | 1734 | if (!NILP (tem)) |
7ab12479 JB |
1735 | XWINDOW (tem)->next = p->next; |
1736 | ||
1737 | if (EQ (window, par->hchild)) | |
1738 | par->hchild = p->next; | |
1739 | if (EQ (window, par->vchild)) | |
1740 | par->vchild = p->next; | |
1741 | ||
1742 | /* Find one of our siblings to give our space to. */ | |
1743 | sib = p->prev; | |
265a9e55 | 1744 | if (NILP (sib)) |
7ab12479 JB |
1745 | { |
1746 | /* If p gives its space to its next sibling, that sibling needs | |
1747 | to have its top/left side pulled back to where p's is. | |
1748 | set_window_{height,width} will re-position the sibling's | |
1749 | children. */ | |
1750 | sib = p->next; | |
949cf20f KS |
1751 | XWINDOW (sib)->top_line = p->top_line; |
1752 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1753 | } |
1754 | ||
1755 | /* Stretch that sibling. */ | |
265a9e55 | 1756 | if (!NILP (par->vchild)) |
7ab12479 | 1757 | set_window_height (sib, |
949cf20f | 1758 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1759 | 1); |
265a9e55 | 1760 | if (!NILP (par->hchild)) |
7ab12479 | 1761 | set_window_width (sib, |
949cf20f | 1762 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1763 | 1); |
1764 | ||
1765 | /* If parent now has only one child, | |
1766 | put the child into the parent's place. */ | |
7ab12479 | 1767 | tem = par->hchild; |
265a9e55 | 1768 | if (NILP (tem)) |
7ab12479 | 1769 | tem = par->vchild; |
5494d7bc | 1770 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1771 | replace_window (parent, tem); |
5494d7bc JD |
1772 | par = XWINDOW (tem); |
1773 | } | |
605be8af JB |
1774 | |
1775 | /* Since we may be deleting combination windows, we must make sure that | |
1776 | not only p but all its children have been marked as deleted. */ | |
1777 | if (! NILP (p->hchild)) | |
1778 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1779 | else if (! NILP (p->vchild)) | |
1780 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1781 | ||
1782 | /* Mark this window as deleted. */ | |
1783 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1784 | |
5494d7bc JD |
1785 | if (! NILP (par->parent)) |
1786 | par = XWINDOW (par->parent); | |
1787 | ||
1788 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1789 | one of them. */ | |
ae12ecd7 | 1790 | |
5494d7bc JD |
1791 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1792 | { | |
1793 | p = XWINDOW (par->vchild); | |
1794 | par->vchild = p->vchild; | |
1795 | tem = p->vchild; | |
1796 | } | |
1797 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1798 | { | |
1799 | p = XWINDOW (par->hchild); | |
1800 | par->hchild = p->hchild; | |
1801 | tem = p->hchild; | |
1802 | } | |
1803 | else | |
1804 | p = 0; | |
1805 | ||
1806 | if (p) | |
1807 | { | |
1808 | while (! NILP (tem)) { | |
1809 | XWINDOW (tem)->parent = p->parent; | |
1810 | if (NILP (XWINDOW (tem)->next)) | |
1811 | break; | |
1812 | tem = XWINDOW (tem)->next; | |
1813 | } | |
1814 | if (! NILP (tem)) { | |
1815 | /* The next of the v/hchild we are removing is now the next of the | |
1816 | last child for the v/hchild: | |
1817 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1818 | | | |
1819 | -> next3 | |
1820 | After: v/hchild -> next1 -> next2 -> next3 | |
1821 | */ | |
1822 | XWINDOW (tem)->next = p->next; | |
1823 | if (! NILP (p->next)) | |
1824 | XWINDOW (p->next)->prev = tem; | |
1825 | } | |
1826 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1827 | } | |
1828 | ||
1829 | ||
5500c422 | 1830 | /* Adjust glyph matrices. */ |
951f9df5 | 1831 | adjust_glyphs (f); |
05e71564 | 1832 | UNBLOCK_INPUT; |
7ab12479 | 1833 | } |
67492200 GM |
1834 | |
1835 | ||
7ab12479 | 1836 | \f |
67492200 GM |
1837 | /*********************************************************************** |
1838 | Window List | |
1839 | ***********************************************************************/ | |
1840 | ||
f95464e4 GM |
1841 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1842 | pointer. This is a callback function for foreach_window, used in | |
1843 | function window_list. */ | |
67492200 GM |
1844 | |
1845 | static int | |
f95464e4 | 1846 | add_window_to_list (w, user_data) |
67492200 | 1847 | struct window *w; |
f95464e4 | 1848 | void *user_data; |
67492200 | 1849 | { |
f95464e4 | 1850 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1851 | Lisp_Object window; |
1852 | XSETWINDOW (window, w); | |
212116d6 | 1853 | *list = Fcons (window, *list); |
67492200 GM |
1854 | return 1; |
1855 | } | |
1856 | ||
1857 | ||
1858 | /* Return a list of all windows, for use by next_window. If | |
1859 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1860 | list, cache it in Vwindow_list, and return that. */ | |
1861 | ||
1862 | static Lisp_Object | |
1863 | window_list () | |
1864 | { | |
1865 | if (!CONSP (Vwindow_list)) | |
1866 | { | |
1867 | Lisp_Object tail; | |
212116d6 | 1868 | |
67492200 GM |
1869 | Vwindow_list = Qnil; |
1870 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1871 | { |
1872 | Lisp_Object args[2]; | |
1873 | ||
1874 | /* We are visiting windows in canonical order, and add | |
1875 | new windows at the front of args[1], which means we | |
1876 | have to reverse this list at the end. */ | |
1877 | args[1] = Qnil; | |
1878 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1879 | args[0] = Vwindow_list; | |
1880 | args[1] = Fnreverse (args[1]); | |
1881 | Vwindow_list = Fnconc (2, args); | |
1882 | } | |
67492200 | 1883 | } |
177c0ea7 | 1884 | |
67492200 GM |
1885 | return Vwindow_list; |
1886 | } | |
1887 | ||
1888 | ||
118ea242 GM |
1889 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1890 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1891 | |
118ea242 GM |
1892 | MINIBUF t means WINDOW may be minibuffer windows. |
1893 | `lambda' means WINDOW may not be a minibuffer window. | |
1894 | a window means a specific minibuffer window | |
67492200 | 1895 | |
118ea242 GM |
1896 | ALL_FRAMES t means search all frames, |
1897 | nil means search just current frame, | |
1898 | `visible' means search just visible frames, | |
1899 | 0 means search visible and iconified frames, | |
1900 | a window means search the frame that window belongs to, | |
1901 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1902 | |
1903 | static int | |
118ea242 GM |
1904 | candidate_window_p (window, owindow, minibuf, all_frames) |
1905 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1906 | { |
1907 | struct window *w = XWINDOW (window); | |
1908 | struct frame *f = XFRAME (w->frame); | |
1909 | int candidate_p = 1; | |
1910 | ||
1911 | if (!BUFFERP (w->buffer)) | |
1912 | candidate_p = 0; | |
1913 | else if (MINI_WINDOW_P (w) | |
1914 | && (EQ (minibuf, Qlambda) | |
1915 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1916 | { | |
1917 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1918 | If it is a window, consider only that one. */ | |
1919 | candidate_p = 0; | |
1920 | } | |
118ea242 GM |
1921 | else if (EQ (all_frames, Qt)) |
1922 | candidate_p = 1; | |
67492200 | 1923 | else if (NILP (all_frames)) |
118ea242 GM |
1924 | { |
1925 | xassert (WINDOWP (owindow)); | |
1926 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1927 | } | |
67492200 GM |
1928 | else if (EQ (all_frames, Qvisible)) |
1929 | { | |
1930 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1931 | candidate_p = FRAME_VISIBLE_P (f) |
1932 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1933 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1934 | ||
67492200 GM |
1935 | } |
1936 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1937 | { | |
1938 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1939 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1940 | #ifdef HAVE_X_WINDOWS | |
1941 | /* Yuck!! If we've just created the frame and the | |
1942 | window-manager requested the user to place it | |
1943 | manually, the window may still not be considered | |
1944 | `visible'. I'd argue it should be at least | |
1945 | something like `iconified', but don't know how to do | |
1946 | that yet. --Stef */ | |
1947 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1948 | && !f->output_data.x->has_been_visible) | |
1949 | #endif | |
de509a60 SM |
1950 | ) |
1951 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1952 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1953 | } |
67492200 GM |
1954 | else if (WINDOWP (all_frames)) |
1955 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1956 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1957 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1958 | else if (FRAMEP (all_frames)) |
1959 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1960 | |
1961 | return candidate_p; | |
1962 | } | |
1963 | ||
1964 | ||
1965 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1966 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1967 | ALL_FRAMES. */ | |
1968 | ||
1969 | static void | |
1970 | decode_next_window_args (window, minibuf, all_frames) | |
1971 | Lisp_Object *window, *minibuf, *all_frames; | |
1972 | { | |
1973 | if (NILP (*window)) | |
1974 | *window = selected_window; | |
1975 | else | |
b7826503 | 1976 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1977 | |
67492200 GM |
1978 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1979 | does. */ | |
1980 | if (NILP (*minibuf)) | |
1981 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1982 | else if (!EQ (*minibuf, Qt)) | |
1983 | *minibuf = Qlambda; | |
177c0ea7 | 1984 | |
67492200 GM |
1985 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1986 | => count none of them, or a specific minibuffer window (the | |
1987 | active one) to count. */ | |
1988 | ||
1989 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1990 | if (NILP (*all_frames)) | |
1991 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1992 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1993 | : Qnil); | |
1994 | else if (EQ (*all_frames, Qvisible)) | |
1995 | ; | |
0f8fe9a2 | 1996 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1997 | ; |
1998 | else if (FRAMEP (*all_frames)) | |
1999 | ; | |
2000 | else if (!EQ (*all_frames, Qt)) | |
2001 | *all_frames = Qnil; | |
177c0ea7 | 2002 | |
67492200 GM |
2003 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
2004 | search just current frame, `visible' meaning search just visible | |
2005 | frames, 0 meaning search visible and iconified frames, or a | |
2006 | window, meaning search the frame that window belongs to, or a | |
2007 | frame, meaning consider windows on that frame, only. */ | |
2008 | } | |
2009 | ||
2010 | ||
ab6d1131 | 2011 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2012 | of windows. NEXT_P non-zero means return the next window. See the |
2013 | documentation string of next-window for the meaning of MINIBUF and | |
2014 | ALL_FRAMES. */ | |
2015 | ||
2016 | static Lisp_Object | |
2017 | next_window (window, minibuf, all_frames, next_p) | |
2018 | Lisp_Object window, minibuf, all_frames; | |
2019 | int next_p; | |
2020 | { | |
2021 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2022 | |
67492200 GM |
2023 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2024 | return the first window on the frame. */ | |
2025 | if (FRAMEP (all_frames) | |
2026 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
2027 | return Fframe_first_window (all_frames); | |
177c0ea7 | 2028 | |
212116d6 | 2029 | if (next_p) |
67492200 GM |
2030 | { |
2031 | Lisp_Object list; | |
177c0ea7 | 2032 | |
67492200 GM |
2033 | /* Find WINDOW in the list of all windows. */ |
2034 | list = Fmemq (window, window_list ()); | |
2035 | ||
2036 | /* Scan forward from WINDOW to the end of the window list. */ | |
2037 | if (CONSP (list)) | |
2038 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2039 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2040 | break; |
2041 | ||
2042 | /* Scan from the start of the window list up to WINDOW. */ | |
2043 | if (!CONSP (list)) | |
2044 | for (list = Vwindow_list; | |
2045 | CONSP (list) && !EQ (XCAR (list), window); | |
2046 | list = XCDR (list)) | |
118ea242 | 2047 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2048 | break; |
2049 | ||
2050 | if (CONSP (list)) | |
2051 | window = XCAR (list); | |
2052 | } | |
2053 | else | |
2054 | { | |
2055 | Lisp_Object candidate, list; | |
177c0ea7 | 2056 | |
67492200 GM |
2057 | /* Scan through the list of windows for candidates. If there are |
2058 | candidate windows in front of WINDOW, the last one of these | |
2059 | is the one we want. If there are candidates following WINDOW | |
2060 | in the list, again the last one of these is the one we want. */ | |
2061 | candidate = Qnil; | |
2062 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2063 | { | |
2064 | if (EQ (XCAR (list), window)) | |
2065 | { | |
2066 | if (WINDOWP (candidate)) | |
2067 | break; | |
2068 | } | |
118ea242 GM |
2069 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2070 | all_frames)) | |
67492200 GM |
2071 | candidate = XCAR (list); |
2072 | } | |
2073 | ||
2074 | if (WINDOWP (candidate)) | |
2075 | window = candidate; | |
2076 | } | |
2077 | ||
2078 | return window; | |
2079 | } | |
7ab12479 | 2080 | |
7ab12479 | 2081 | |
26f6279d | 2082 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
2083 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
2084 | WINDOW defaults to the selected window. The optional arguments | |
2085 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 2086 | |
ab6d1131 MR |
2087 | MINIBUF t means consider the minibuffer window even if the |
2088 | minibuffer is not active. MINIBUF nil or omitted means consider | |
2089 | the minibuffer window only if the minibuffer is active. Any | |
2090 | other value means do not consider the minibuffer window even if | |
2091 | the minibuffer is active. | |
fdb82f93 PJ |
2092 | |
2093 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
2094 | is active, all windows on all frames that share that minibuffer |
2095 | are considered too. Therefore, if you are using a separate | |
2096 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
2097 | counts, `next-window' considers the windows in the frame from | |
2098 | which you entered the minibuffer, as well as the minibuffer | |
2099 | window. | |
2100 | ||
2101 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
2102 | frame, plus the minibuffer window if specified by the MINIBUF | |
2103 | argument, see above. If the minibuffer counts, consider all | |
2104 | windows on all frames that share that minibuffer too. | |
2105 | ALL-FRAMES t means consider all windows on all existing frames. | |
2106 | ALL-FRAMES `visible' means consider all windows on all visible | |
2107 | frames. | |
2108 | ALL-FRAMES 0 means consider all windows on all visible and | |
2109 | iconified frames. | |
2110 | ALL-FRAMES a frame means consider all windows on that frame only. | |
2111 | Anything else means consider all windows on WINDOW's frame and no | |
2112 | others. | |
fdb82f93 PJ |
2113 | |
2114 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2115 | `next-window' to iterate through the entire cycle of acceptable | |
2116 | windows, eventually ending up back at the window you started with. | |
2117 | `previous-window' traverses the same cycle, in the reverse order. */) | |
2118 | (window, minibuf, all_frames) | |
67492200 | 2119 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2120 | { |
67492200 | 2121 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2122 | } |
2123 | ||
67492200 | 2124 | |
26f6279d | 2125 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
2126 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
2127 | WINDOW defaults to the selected window. The optional arguments | |
2128 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
2129 | For the precise meaning of these arguments see `next-window'. | |
2130 | ||
2131 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2132 | use `previous-window' to iterate through the entire cycle of | |
2133 | acceptable windows, eventually ending up back at the window you | |
2134 | started with. `next-window' traverses the same cycle, in the | |
2135 | reverse order. */) | |
fdb82f93 | 2136 | (window, minibuf, all_frames) |
67492200 | 2137 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2138 | { |
67492200 | 2139 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2140 | } |
2141 | ||
67492200 | 2142 | |
62c07cc7 | 2143 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2144 | doc: /* Select another window in cyclic ordering of windows. |
2145 | COUNT specifies the number of windows to skip, starting with the | |
2146 | selected window, before making the selection. If COUNT is | |
2147 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2148 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2149 | window, so select the selected window. In an interactive call, | |
2150 | COUNT is the numeric prefix argument. Return nil. | |
2151 | ||
2152 | This function uses `next-window' for finding the window to select. | |
2153 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2154 | but the MINIBUF argument of `next-window' is always effectively | |
2155 | nil. */) | |
2156 | (count, all_frames) | |
2157 | Lisp_Object count, all_frames; | |
7ab12479 | 2158 | { |
67492200 GM |
2159 | Lisp_Object window; |
2160 | int i; | |
7ab12479 | 2161 | |
ab6d1131 | 2162 | CHECK_NUMBER (count); |
67492200 | 2163 | window = selected_window; |
177c0ea7 | 2164 | |
ab6d1131 | 2165 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2166 | window = Fnext_window (window, Qnil, all_frames); |
2167 | for (; i < 0; ++i) | |
2168 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2169 | |
14d87dc9 | 2170 | Fselect_window (window, Qnil); |
7ab12479 JB |
2171 | return Qnil; |
2172 | } | |
67492200 GM |
2173 | |
2174 | ||
2175 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2176 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2177 | FRAME nil or omitted means use the selected frame. | |
2178 | WINDOW nil or omitted means use the selected window. | |
2179 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2180 | MINIBUF nil or omitted means include the minibuffer window only | |
2181 | if it's active. | |
2182 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2183 | (frame, minibuf, window) | |
cd2904bd GM |
2184 | Lisp_Object frame, minibuf, window; |
2185 | { | |
cd2904bd | 2186 | if (NILP (window)) |
acc6289a SM |
2187 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2188 | CHECK_WINDOW (window); | |
cd2904bd GM |
2189 | if (NILP (frame)) |
2190 | frame = selected_frame; | |
2191 | ||
2192 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2193 | error ("Window is on a different frame"); | |
2194 | ||
2195 | return window_list_1 (window, minibuf, frame); | |
2196 | } | |
2197 | ||
2198 | ||
ab6d1131 | 2199 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2200 | for `next-window'. */ |
2201 | ||
2202 | static Lisp_Object | |
2203 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2204 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2205 | { |
403de3b4 | 2206 | Lisp_Object tail, list, rest; |
67492200 GM |
2207 | |
2208 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2209 | list = Qnil; | |
177c0ea7 | 2210 | |
67492200 | 2211 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2212 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2213 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2214 | |
403de3b4 RS |
2215 | /* Rotate the list to start with WINDOW. */ |
2216 | list = Fnreverse (list); | |
2217 | rest = Fmemq (window, list); | |
2218 | if (!NILP (rest) && !EQ (rest, list)) | |
2219 | { | |
1725a7c9 | 2220 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2221 | ; |
2222 | XSETCDR (tail, Qnil); | |
2223 | list = nconc2 (rest, list); | |
2224 | } | |
2225 | return list; | |
67492200 GM |
2226 | } |
2227 | ||
2228 | ||
7ab12479 JB |
2229 | \f |
2230 | /* Look at all windows, performing an operation specified by TYPE | |
2231 | with argument OBJ. | |
75d8f668 | 2232 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2233 | Qnil, look at just the selected frame; |
89bca612 | 2234 | Qvisible, look at visible frames; |
75d8f668 | 2235 | a frame, just look at windows on that frame. |
85fe3b5e | 2236 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2237 | |
2238 | enum window_loop | |
2239 | { | |
2240 | WINDOW_LOOP_UNUSED, | |
2241 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2242 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2243 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2244 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2245 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2246 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2247 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2248 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2249 | }; |
2250 | ||
2251 | static Lisp_Object | |
44fa5b1e | 2252 | window_loop (type, obj, mini, frames) |
7ab12479 | 2253 | enum window_loop type; |
118ea242 | 2254 | Lisp_Object obj, frames; |
7ab12479 JB |
2255 | int mini; |
2256 | { | |
118ea242 GM |
2257 | Lisp_Object window, windows, best_window, frame_arg; |
2258 | struct frame *f; | |
ffdc852d | 2259 | struct gcpro gcpro1; |
177c0ea7 | 2260 | |
44fa5b1e JB |
2261 | /* If we're only looping through windows on a particular frame, |
2262 | frame points to that frame. If we're looping through windows | |
2263 | on all frames, frame is 0. */ | |
2264 | if (FRAMEP (frames)) | |
118ea242 | 2265 | f = XFRAME (frames); |
44fa5b1e | 2266 | else if (NILP (frames)) |
118ea242 | 2267 | f = SELECTED_FRAME (); |
7ab12479 | 2268 | else |
118ea242 | 2269 | f = NULL; |
177c0ea7 | 2270 | |
118ea242 | 2271 | if (f) |
89bca612 | 2272 | frame_arg = Qlambda; |
0f8fe9a2 | 2273 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2274 | frame_arg = frames; |
89bca612 RS |
2275 | else if (EQ (frames, Qvisible)) |
2276 | frame_arg = frames; | |
118ea242 GM |
2277 | else |
2278 | frame_arg = Qt; | |
7ab12479 | 2279 | |
89bca612 RS |
2280 | /* frame_arg is Qlambda to stick to one frame, |
2281 | Qvisible to consider all visible frames, | |
2282 | or Qt otherwise. */ | |
2283 | ||
7ab12479 | 2284 | /* Pick a window to start with. */ |
017b2bad | 2285 | if (WINDOWP (obj)) |
118ea242 GM |
2286 | window = obj; |
2287 | else if (f) | |
2288 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2289 | else |
118ea242 | 2290 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2291 | |
cd2904bd | 2292 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2293 | GCPRO1 (windows); |
7ab12479 | 2294 | best_window = Qnil; |
118ea242 | 2295 | |
e67a1dea | 2296 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2297 | { |
118ea242 | 2298 | struct window *w; |
177c0ea7 | 2299 | |
118ea242 GM |
2300 | window = XCAR (windows); |
2301 | w = XWINDOW (window); | |
177c0ea7 | 2302 | |
118ea242 GM |
2303 | /* Note that we do not pay attention here to whether the frame |
2304 | is visible, since Fwindow_list skips non-visible frames if | |
2305 | that is desired, under the control of frame_arg. */ | |
2306 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2307 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2308 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2309 | || (mini && minibuf_level > 0)) |
2310 | switch (type) | |
2311 | { | |
2312 | case GET_BUFFER_WINDOW: | |
118ea242 | 2313 | if (EQ (w->buffer, obj) |
5c204627 RS |
2314 | /* Don't find any minibuffer window |
2315 | except the one that is currently in use. */ | |
118ea242 GM |
2316 | && (MINI_WINDOW_P (w) |
2317 | ? EQ (window, minibuf_window) | |
2318 | : 1)) | |
2319 | { | |
5ddc1b75 GM |
2320 | if (NILP (best_window)) |
2321 | best_window = window; | |
2322 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2323 | /* Prefer to return selected-window. */ |
2324 | RETURN_UNGCPRO (window); | |
2325 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2326 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2327 | best_window = window; |
118ea242 | 2328 | } |
7ab12479 JB |
2329 | break; |
2330 | ||
2331 | case GET_LRU_WINDOW: | |
20b69789 SM |
2332 | /* `obj' is an integer encoding a bitvector. |
2333 | `obj & 1' means consider only full-width windows. | |
2334 | `obj & 2' means consider also dedicated windows. */ | |
2335 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2336 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2337 | /* Minibuffer windows are always ignored. */ |
2338 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2339 | break; |
265a9e55 | 2340 | if (NILP (best_window) |
7ab12479 | 2341 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2342 | > XFASTINT (w->use_time))) |
2343 | best_window = window; | |
7ab12479 JB |
2344 | break; |
2345 | ||
2346 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2347 | if (!EQ (window, obj)) |
2348 | Fdelete_window (window); | |
7ab12479 JB |
2349 | break; |
2350 | ||
2351 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2352 | if (EQ (w->buffer, obj)) |
7ab12479 | 2353 | { |
118ea242 | 2354 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2355 | |
2356 | /* If this window is dedicated, and in a frame of its own, | |
2357 | kill the frame. */ | |
118ea242 GM |
2358 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2359 | && !NILP (w->dedicated) | |
3548e138 | 2360 | && other_visible_frames (f)) |
7ab12479 | 2361 | { |
3548e138 RS |
2362 | /* Skip the other windows on this frame. |
2363 | There might be one, the minibuffer! */ | |
118ea242 GM |
2364 | while (CONSP (XCDR (windows)) |
2365 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2366 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2367 | windows = XCDR (windows); | |
177c0ea7 | 2368 | |
3548e138 | 2369 | /* Now we can safely delete the frame. */ |
56f2de10 | 2370 | delete_frame (w->frame, Qnil); |
118ea242 GM |
2371 | } |
2372 | else if (NILP (w->parent)) | |
2373 | { | |
2374 | /* If we're deleting the buffer displayed in the | |
2375 | only window on the frame, find a new buffer to | |
2376 | display there. */ | |
2377 | Lisp_Object buffer; | |
2378 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1c33c906 MR |
2379 | /* Reset dedicated state of window. */ |
2380 | w->dedicated = Qnil; | |
949cf20f | 2381 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2382 | if (EQ (window, selected_window)) |
2383 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2384 | } |
2385 | else | |
118ea242 | 2386 | Fdelete_window (window); |
7ab12479 JB |
2387 | } |
2388 | break; | |
2389 | ||
2390 | case GET_LARGEST_WINDOW: | |
20b69789 | 2391 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2392 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2393 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2394 | break; |
177c0ea7 | 2395 | |
c930dfab | 2396 | if (NILP (best_window)) |
118ea242 | 2397 | best_window = window; |
c930dfab GM |
2398 | else |
2399 | { | |
2400 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2401 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2402 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2403 | best_window = window; |
2404 | } | |
7ab12479 JB |
2405 | } |
2406 | break; | |
2407 | ||
2408 | case UNSHOW_BUFFER: | |
118ea242 | 2409 | if (EQ (w->buffer, obj)) |
7ab12479 | 2410 | { |
118ea242 GM |
2411 | Lisp_Object buffer; |
2412 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2413 | |
7ab12479 | 2414 | /* Find another buffer to show in this window. */ |
118ea242 | 2415 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2416 | |
38ab08d1 RS |
2417 | /* If this window is dedicated, and in a frame of its own, |
2418 | kill the frame. */ | |
118ea242 GM |
2419 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2420 | && !NILP (w->dedicated) | |
38ab08d1 | 2421 | && other_visible_frames (f)) |
45945a7b RS |
2422 | { |
2423 | /* Skip the other windows on this frame. | |
2424 | There might be one, the minibuffer! */ | |
118ea242 GM |
2425 | while (CONSP (XCDR (windows)) |
2426 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2427 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2428 | windows = XCDR (windows); | |
177c0ea7 | 2429 | |
45945a7b | 2430 | /* Now we can safely delete the frame. */ |
56f2de10 | 2431 | delete_frame (w->frame, Qnil); |
45945a7b | 2432 | } |
a5731348 SM |
2433 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2434 | { | |
2435 | Lisp_Object window; | |
2436 | XSETWINDOW (window, w); | |
2437 | /* If this window is dedicated and not the only window | |
2438 | in its frame, then kill it. */ | |
2439 | Fdelete_window (window); | |
2440 | } | |
38ab08d1 | 2441 | else |
38ab08d1 RS |
2442 | { |
2443 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2444 | w->dedicated = Qnil; |
949cf20f | 2445 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2446 | if (EQ (window, selected_window)) |
2447 | Fset_buffer (w->buffer); | |
38ab08d1 | 2448 | } |
7ab12479 JB |
2449 | } |
2450 | break; | |
3f8ab7bd | 2451 | |
6b61353c KH |
2452 | case REDISPLAY_BUFFER_WINDOWS: |
2453 | if (EQ (w->buffer, obj)) | |
2454 | { | |
2455 | mark_window_display_accurate (window, 0); | |
2456 | w->update_mode_line = Qt; | |
2457 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2458 | ++update_mode_lines; | |
2459 | best_window = window; | |
2460 | } | |
2461 | break; | |
2462 | ||
3f8ab7bd RS |
2463 | /* Check for a window that has a killed buffer. */ |
2464 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2465 | if (! NILP (w->buffer) |
2466 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2467 | abort (); |
118ea242 | 2468 | break; |
6bbd7a29 GM |
2469 | |
2470 | case WINDOW_LOOP_UNUSED: | |
2471 | break; | |
7ab12479 | 2472 | } |
7ab12479 | 2473 | } |
7ab12479 | 2474 | |
118ea242 | 2475 | UNGCPRO; |
7ab12479 | 2476 | return best_window; |
37962e60 | 2477 | } |
605be8af | 2478 | |
3f8ab7bd RS |
2479 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2480 | ||
233a4a2c | 2481 | void |
3f8ab7bd RS |
2482 | check_all_windows () |
2483 | { | |
2484 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2485 | } | |
2486 | ||
3cbb13c8 | 2487 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2488 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2489 | \(LRU means Least Recently Used.) |
2490 | ||
6b61353c | 2491 | Return a full-width window if possible. |
c2755926 | 2492 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2493 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2494 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2495 | If optional argument FRAME is `visible', search all visible frames. |
2496 | If FRAME is 0, search all visible and iconified frames. | |
2497 | If FRAME is t, search all frames. | |
2498 | If FRAME is nil, search only the selected frame. | |
2499 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2500 | (frame, dedicated) |
2501 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2502 | { |
2503 | register Lisp_Object w; | |
2504 | /* First try for a window that is full-width */ | |
20b69789 SM |
2505 | w = window_loop (GET_LRU_WINDOW, |
2506 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2507 | 0, frame); | |
265a9e55 | 2508 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2509 | return w; |
2510 | /* If none of them, try the rest */ | |
20b69789 SM |
2511 | return window_loop (GET_LRU_WINDOW, |
2512 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2513 | 0, frame); | |
7ab12479 JB |
2514 | } |
2515 | ||
3cbb13c8 | 2516 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2517 | doc: /* Return the largest window in area. |
c2755926 | 2518 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2519 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2520 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2521 | If optional argument FRAME is `visible', search all visible frames. |
2522 | If FRAME is 0, search all visible and iconified frames. | |
2523 | If FRAME is t, search all frames. | |
2524 | If FRAME is nil, search only the selected frame. | |
2525 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2526 | (frame, dedicated) |
2527 | Lisp_Object frame, dedicated; | |
7ab12479 | 2528 | { |
20b69789 | 2529 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2530 | frame); |
7ab12479 JB |
2531 | } |
2532 | ||
fec89261 MR |
2533 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
2534 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. | |
2535 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the | |
2536 | current buffer. | |
fdb82f93 PJ |
2537 | If optional argument FRAME is `visible', search all visible frames. |
2538 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2539 | If FRAME is t, search all frames. | |
2540 | If FRAME is nil, search only the selected frame. | |
2541 | If FRAME is a frame, search only that frame. */) | |
fec89261 MR |
2542 | (buffer_or_name, frame) |
2543 | Lisp_Object buffer_or_name, frame; | |
7ab12479 | 2544 | { |
fec89261 MR |
2545 | Lisp_Object buffer; |
2546 | ||
2547 | if (NILP (buffer_or_name)) | |
2548 | buffer = Fcurrent_buffer (); | |
2549 | else | |
2550 | buffer = Fget_buffer (buffer_or_name); | |
2551 | ||
017b2bad | 2552 | if (BUFFERP (buffer)) |
44fa5b1e | 2553 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2554 | else |
2555 | return Qnil; | |
2556 | } | |
2557 | ||
2558 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2559 | 0, 1, "", |
2560 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2561 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
2562 | This function tries to reduce display jumps by keeping the text |
2563 | previously visible in WINDOW in the same place on the frame. Doing this | |
2564 | depends on the value of (window-start WINDOW), so if calling this | |
2565 | function in a program gives strange scrolling, make sure the | |
2566 | window-start value is reasonable when this function is called. */) | |
fdb82f93 | 2567 | (window) |
7ab12479 JB |
2568 | Lisp_Object window; |
2569 | { | |
2570 | struct window *w; | |
00d3d838 | 2571 | int startpos; |
85fe3b5e | 2572 | int top, new_top; |
7ab12479 | 2573 | |
265a9e55 | 2574 | if (NILP (window)) |
7ab12479 JB |
2575 | window = selected_window; |
2576 | else | |
b7826503 | 2577 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2578 | w = XWINDOW (window); |
a2b38b3c | 2579 | |
00d3d838 | 2580 | startpos = marker_position (w->start); |
949cf20f | 2581 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2582 | |
a2b38b3c RS |
2583 | if (MINI_WINDOW_P (w) && top > 0) |
2584 | error ("Can't expand minibuffer to full frame"); | |
2585 | ||
70728a80 | 2586 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2587 | |
00d3d838 KH |
2588 | /* Try to minimize scrolling, by setting the window start to the point |
2589 | will cause the text at the old window start to be at the same place | |
2590 | on the frame. But don't try to do this if the window start is | |
2591 | outside the visible portion (as might happen when the display is | |
2592 | not current, due to typeahead). */ | |
949cf20f | 2593 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2594 | if (new_top != top |
2595 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2596 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2597 | { | |
2598 | struct position pos; | |
2599 | struct buffer *obuf = current_buffer; | |
2600 | ||
2601 | Fset_buffer (w->buffer); | |
2602 | /* This computation used to temporarily move point, but that can | |
2603 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2604 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2605 | |
b73ea88e | 2606 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2607 | w->window_end_valid = Qnil; |
b73ea88e RS |
2608 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2609 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2610 | : Qnil); |
80622eec RS |
2611 | /* We need to do this, so that the window-scroll-functions |
2612 | get called. */ | |
4d047f50 | 2613 | w->optional_new_start = Qt; |
00d3d838 KH |
2614 | |
2615 | set_buffer_internal (obuf); | |
2616 | } | |
5500c422 | 2617 | |
7ab12479 JB |
2618 | return Qnil; |
2619 | } | |
2620 | ||
2621 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
2622 | 0, 2, "bDelete windows on (buffer): ", |
2623 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
2624 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2625 | defaults to the current buffer. | |
2626 | ||
fdb82f93 PJ |
2627 | Optional second argument FRAME controls which frames are affected. |
2628 | If optional argument FRAME is `visible', search all visible frames. | |
2629 | If FRAME is 0, search all visible and iconified frames. | |
2630 | If FRAME is nil, search all frames. | |
2631 | If FRAME is t, search only the selected frame. | |
d653c8cc | 2632 | If FRAME is a frame, search only that frame. |
fec89261 MR |
2633 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
2634 | its frame, that frame is deleted when there are other frames left. */) | |
2635 | (buffer_or_name, frame) | |
2636 | Lisp_Object buffer_or_name, frame; | |
7ab12479 | 2637 | { |
fec89261 MR |
2638 | Lisp_Object buffer; |
2639 | ||
26f6279d JB |
2640 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2641 | expects. */ | |
c520265e RS |
2642 | if (NILP (frame)) |
2643 | frame = Qt; | |
2644 | else if (EQ (frame, Qt)) | |
2645 | frame = Qnil; | |
26f6279d | 2646 | |
fec89261 MR |
2647 | if (NILP (buffer_or_name)) |
2648 | buffer = Fcurrent_buffer (); | |
2649 | else | |
7ab12479 | 2650 | { |
fec89261 | 2651 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2652 | CHECK_BUFFER (buffer); |
7ab12479 | 2653 | } |
177c0ea7 | 2654 | |
fec89261 MR |
2655 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
2656 | ||
7ab12479 JB |
2657 | return Qnil; |
2658 | } | |
2659 | ||
2660 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 2661 | Sreplace_buffer_in_windows, |
fec89261 MR |
2662 | 0, 1, "bReplace buffer in windows: ", |
2663 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
2664 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2665 | defaults to the current buffer. | |
2666 | ||
2667 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
2668 | deleted. If that window is the only window on its frame, that frame is | |
2669 | deleted too when there are other frames left. If there are no other | |
2670 | frames left, some other buffer is displayed in that window. */) | |
2671 | (buffer_or_name) | |
2672 | Lisp_Object buffer_or_name; | |
2673 | { | |
2674 | Lisp_Object buffer; | |
2675 | ||
2676 | if (NILP (buffer_or_name)) | |
2677 | buffer = Fcurrent_buffer (); | |
2678 | else | |
7ab12479 | 2679 | { |
fec89261 | 2680 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2681 | CHECK_BUFFER (buffer); |
7ab12479 | 2682 | } |
fec89261 MR |
2683 | |
2684 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2685 | ||
7ab12479 JB |
2686 | return Qnil; |
2687 | } | |
ff58478b RS |
2688 | |
2689 | /* Replace BUFFER with some other buffer in all windows | |
2690 | of all frames, even those on other keyboards. */ | |
2691 | ||
2692 | void | |
2693 | replace_buffer_in_all_windows (buffer) | |
2694 | Lisp_Object buffer; | |
2695 | { | |
2696 | Lisp_Object tail, frame; | |
2697 | ||
ff58478b RS |
2698 | /* A single call to window_loop won't do the job |
2699 | because it only considers frames on the current keyboard. | |
2700 | So loop manually over frames, and handle each one. */ | |
2701 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2702 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2703 | } |
7ab12479 JB |
2704 | \f |
2705 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2706 | |
2707 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2708 | might crash Emacs. */ | |
5500c422 | 2709 | |
a481b3ea | 2710 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2711 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2712 | |
047aaeb9 MR |
2713 | /* For wp non-zero the total number of columns of window w. Otherwise |
2714 | the total number of lines of w. */ | |
a481b3ea | 2715 | |
047aaeb9 MR |
2716 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2717 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2718 | |
2719 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2720 | minimum allowable size. */ | |
5500c422 | 2721 | |
605be8af | 2722 | void |
a481b3ea | 2723 | check_frame_size (frame, rows, cols) |
605be8af JB |
2724 | FRAME_PTR frame; |
2725 | int *rows, *cols; | |
a481b3ea | 2726 | { |
628df3bf | 2727 | /* For height, we have to see: |
54b8bcb5 RS |
2728 | how many windows the frame has at minimum (one or two), |
2729 | and whether it has a menu bar or other special stuff at the top. */ | |
2730 | int min_height | |
2731 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2732 | ? MIN_SAFE_WINDOW_HEIGHT | |
2733 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2734 | |
5500c422 GM |
2735 | if (FRAME_TOP_MARGIN (frame) > 0) |
2736 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2737 | |
2738 | if (*rows < min_height) | |
2739 | *rows = min_height; | |
2740 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2741 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2742 | } | |
2743 | ||
233a4a2c GM |
2744 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2745 | check if W's width can be changed, otherwise check W's height. | |
2746 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2747 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2748 | either. */ | |
c1636aa6 | 2749 | |
233a4a2c GM |
2750 | static int |
2751 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2752 | struct window *w; | |
2753 | int width_p, check_siblings_p; | |
2754 | { | |
2755 | int fixed_p; | |
2756 | struct window *c; | |
177c0ea7 | 2757 | |
233a4a2c GM |
2758 | if (!NILP (w->hchild)) |
2759 | { | |
2760 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2761 | |
233a4a2c GM |
2762 | if (width_p) |
2763 | { | |
047aaeb9 | 2764 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2765 | children are. */ |
2766 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2767 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2768 | fixed_p = c == NULL; | |
2769 | } | |
2770 | else | |
2771 | { | |
047aaeb9 | 2772 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2773 | children is. */ |
2774 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2775 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2776 | fixed_p = c != NULL; | |
2777 | } | |
2778 | } | |
2779 | else if (!NILP (w->vchild)) | |
2780 | { | |
2781 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2782 | |
233a4a2c GM |
2783 | if (width_p) |
2784 | { | |
047aaeb9 | 2785 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2786 | children is. */ |
2787 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2788 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2789 | fixed_p = c != NULL; | |
2790 | } | |
2791 | else | |
2792 | { | |
047aaeb9 | 2793 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2794 | children are. */ |
2795 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2796 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2797 | fixed_p = c == NULL; | |
2798 | } | |
2799 | } | |
2800 | else if (BUFFERP (w->buffer)) | |
2801 | { | |
3df0580e AS |
2802 | struct buffer *old = current_buffer; |
2803 | Lisp_Object val; | |
177c0ea7 | 2804 | |
3df0580e AS |
2805 | current_buffer = XBUFFER (w->buffer); |
2806 | val = find_symbol_value (Qwindow_size_fixed); | |
2807 | current_buffer = old; | |
a34dfd12 | 2808 | |
3df0580e AS |
2809 | fixed_p = 0; |
2810 | if (!EQ (val, Qunbound)) | |
2811 | { | |
2812 | fixed_p = !NILP (val); | |
177c0ea7 | 2813 | |
3df0580e AS |
2814 | if (fixed_p |
2815 | && ((EQ (val, Qheight) && width_p) | |
2816 | || (EQ (val, Qwidth) && !width_p))) | |
2817 | fixed_p = 0; | |
233a4a2c GM |
2818 | } |
2819 | ||
2820 | /* Can't tell if this one is resizable without looking at | |
2821 | siblings. If all siblings are fixed-size this one is too. */ | |
2822 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2823 | { | |
2824 | Lisp_Object child; | |
177c0ea7 | 2825 | |
9beb8baa | 2826 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2827 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2828 | break; | |
2829 | ||
2830 | if (NILP (child)) | |
9beb8baa | 2831 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2832 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2833 | break; | |
2834 | ||
2835 | if (NILP (child)) | |
2836 | fixed_p = 1; | |
2837 | } | |
2838 | } | |
2839 | else | |
2840 | fixed_p = 1; | |
2841 | ||
2842 | return fixed_p; | |
2843 | } | |
177c0ea7 | 2844 | |
047aaeb9 MR |
2845 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2846 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2847 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2848 | return values that won't crash Emacs and don't hide components like | |
2849 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2850 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2851 | |
2852 | static int | |
047aaeb9 | 2853 | window_min_size_2 (w, width_p, safe_p) |
f1de8c77 | 2854 | struct window *w; |
047aaeb9 | 2855 | int width_p, safe_p; |
f1de8c77 | 2856 | { |
047aaeb9 MR |
2857 | /* We should consider buffer-local values of window_min_height and |
2858 | window_min_width here. */ | |
f1de8c77 | 2859 | if (width_p) |
047aaeb9 MR |
2860 | { |
2861 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 2862 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2863 | + WINDOW_SCROLL_BAR_COLS (w)); |
2864 | ||
2865 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2866 | } | |
f1de8c77 | 2867 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2868 | return 1; |
f1de8c77 | 2869 | else |
047aaeb9 MR |
2870 | { |
2871 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2872 | + ((BUFFERP (w->buffer) | |
2873 | && !NILP (XBUFFER (w->buffer)->mode_line_format)) | |
2874 | ? 1 : 0)); | |
f1de8c77 | 2875 | |
047aaeb9 MR |
2876 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2877 | } | |
f1de8c77 | 2878 | } |
233a4a2c | 2879 | |
047aaeb9 MR |
2880 | /* Return minimum size of window W, not taking fixed-width windows into |
2881 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2882 | return the minimum height. SAFE_P non-zero means ignore | |
2883 | window-min-height|width but just return values that won't crash Emacs | |
2884 | and don't hide components like fringes, scrollbars, or modelines. If | |
2885 | W is a combination window, compute the minimum size from the minimum | |
2886 | sizes of W's children. */ | |
233a4a2c GM |
2887 | |
2888 | static int | |
047aaeb9 | 2889 | window_min_size_1 (w, width_p, safe_p) |
c1636aa6 | 2890 | struct window *w; |
047aaeb9 | 2891 | int width_p, safe_p; |
c1636aa6 | 2892 | { |
233a4a2c | 2893 | struct window *c; |
c1636aa6 | 2894 | int size; |
177c0ea7 | 2895 | |
233a4a2c GM |
2896 | if (!NILP (w->hchild)) |
2897 | { | |
047aaeb9 | 2898 | /* W is a horizontal combination. */ |
233a4a2c GM |
2899 | c = XWINDOW (w->hchild); |
2900 | size = 0; | |
177c0ea7 | 2901 | |
233a4a2c GM |
2902 | if (width_p) |
2903 | { | |
047aaeb9 MR |
2904 | /* The minimum width of a horizontal combination is the sum of |
2905 | the minimum widths of its children. */ | |
233a4a2c GM |
2906 | while (c) |
2907 | { | |
047aaeb9 | 2908 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2909 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2910 | } | |
2911 | } | |
2912 | else | |
2913 | { | |
047aaeb9 MR |
2914 | /* The minimum height of a horizontal combination is the |
2915 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2916 | while (c) |
2917 | { | |
047aaeb9 | 2918 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2919 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2920 | } | |
2921 | } | |
2922 | } | |
2923 | else if (!NILP (w->vchild)) | |
2924 | { | |
047aaeb9 | 2925 | /* W is a vertical combination. */ |
233a4a2c GM |
2926 | c = XWINDOW (w->vchild); |
2927 | size = 0; | |
177c0ea7 | 2928 | |
233a4a2c GM |
2929 | if (width_p) |
2930 | { | |
047aaeb9 MR |
2931 | /* The minimum width of a vertical combination is the maximum |
2932 | of the minimum widths of its children. */ | |
233a4a2c GM |
2933 | while (c) |
2934 | { | |
047aaeb9 | 2935 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2936 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2937 | } | |
2938 | } | |
2939 | else | |
2940 | { | |
047aaeb9 MR |
2941 | /* The minimum height of a vertical combination is the sum of |
2942 | the minimum height of its children. */ | |
233a4a2c GM |
2943 | while (c) |
2944 | { | |
047aaeb9 | 2945 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2946 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2947 | } | |
2948 | } | |
2949 | } | |
c1636aa6 | 2950 | else |
047aaeb9 MR |
2951 | /* W is a leaf window. */ |
2952 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2953 | |
2954 | return size; | |
2955 | } | |
2956 | ||
233a4a2c | 2957 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2958 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2959 | return the minimum height. SAFE_P non-zero means ignore | |
2960 | window-min-height|width but just return values that won't crash Emacs | |
2961 | and don't hide components like fringes, scrollbars, or modelines. | |
2962 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2963 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2964 | |
233a4a2c | 2965 | static int |
047aaeb9 | 2966 | window_min_size (w, width_p, safe_p, ignore_fixed_p, fixed) |
233a4a2c | 2967 | struct window *w; |
047aaeb9 | 2968 | int width_p, safe_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2969 | { |
2970 | int size, fixed_p; | |
2971 | ||
f984d4fc GM |
2972 | if (ignore_fixed_p) |
2973 | fixed_p = 0; | |
2974 | else | |
2975 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2976 | |
233a4a2c GM |
2977 | if (fixed) |
2978 | *fixed = fixed_p; | |
177c0ea7 | 2979 | |
233a4a2c | 2980 | if (fixed_p) |
047aaeb9 | 2981 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2982 | else |
047aaeb9 | 2983 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2984 | |
233a4a2c GM |
2985 | return size; |
2986 | } | |
2987 | ||
2988 | ||
79fd290e | 2989 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2990 | Return 1 if window width is ok after adjustment; 0 if window |
2991 | is still too narrow. */ | |
2992 | ||
2993 | static int | |
2994 | adjust_window_margins (w) | |
2995 | struct window *w; | |
2996 | { | |
2997 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2998 | - WINDOW_FRINGE_COLS (w) | |
2999 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3000 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3001 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3002 | ||
3003 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3004 | return 1; | |
3005 | ||
3006 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3007 | return 0; | |
3008 | ||
3009 | /* Window's text area is too narrow, but reducing the window | |
3010 | margins will fix that. */ | |
3011 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3012 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3013 | { | |
3014 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
3015 | w->left_margin_cols = w->right_margin_cols | |
3016 | = make_number (margin_cols/2); | |
3017 | else | |
3018 | w->right_margin_cols = make_number (margin_cols); | |
3019 | } | |
3020 | else | |
3021 | w->left_margin_cols = make_number (margin_cols); | |
3022 | return 1; | |
3023 | } | |
3024 | ||
047aaeb9 MR |
3025 | /* Calculate new sizes for windows in the list FORWARD when their |
3026 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
3027 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
3028 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
3029 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
3030 | shrink columns, otherwise shrink lines. | |
6b61353c | 3031 | |
047aaeb9 MR |
3032 | SAFE_P zero means windows may be sized down to window-min-height |
3033 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
3034 | non-zero means windows may be sized down to their minimum safe sizes | |
3035 | taking into account the space needed to display modelines, fringes, | |
3036 | and scrollbars. | |
6b61353c | 3037 | |
047aaeb9 MR |
3038 | This function returns an allocated array of new sizes that the caller |
3039 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
3040 | zero. A size zero means the window shall be deleted. Array index 0 | |
3041 | refers to the first window in FORWARD, 1 to the second, and so on. | |
3042 | ||
3043 | This function resizes windows proportionally to their size. It also | |
3044 | tries to preserve smaller windows by resizing larger windows before | |
3045 | resizing any window to zero. If resize_proportionally is non-nil for | |
3046 | a specific window, it will attempt to strictly resize that window | |
3047 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 3048 | static int * |
047aaeb9 MR |
3049 | shrink_windows (total, size, nchildren, shrinkable, resize_fixed_p, |
3050 | forward, width_p, safe_p) | |
3051 | int total, size, nchildren, shrinkable; | |
3052 | int resize_fixed_p, width_p, safe_p; | |
6b61353c KH |
3053 | Lisp_Object forward; |
3054 | { | |
3055 | int available_resize = 0; | |
047aaeb9 | 3056 | int *new_sizes, *min_sizes; |
6b61353c KH |
3057 | struct window *c; |
3058 | Lisp_Object child; | |
3059 | int smallest = total; | |
3060 | int total_removed = 0; | |
3061 | int total_shrink = total - size; | |
3062 | int i; | |
3063 | ||
3064 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 3065 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
3066 | |
3067 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
3068 | { | |
3069 | int child_size; | |
3070 | ||
3071 | c = XWINDOW (child); | |
047aaeb9 | 3072 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 3073 | |
047aaeb9 | 3074 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
3075 | new_sizes[i] = -1; |
3076 | else | |
3077 | { | |
3078 | new_sizes[i] = child_size; | |
047aaeb9 MR |
3079 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
3080 | if (child_size > min_sizes[i] | |
3081 | && NILP (c->resize_proportionally)) | |
3082 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
3083 | } |
3084 | } | |
3085 | /* We might need to shrink some windows to zero. Find the smallest | |
3086 | windows and set them to 0 until we can fulfil the new size. */ | |
3087 | ||
3088 | while (shrinkable > 1 && size + available_resize < total) | |
3089 | { | |
3090 | for (i = 0; i < nchildren; ++i) | |
3091 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
3092 | smallest = new_sizes[i]; | |
3093 | ||
3094 | for (i = 0; i < nchildren; ++i) | |
3095 | if (new_sizes[i] == smallest) | |
3096 | { | |
3097 | /* Resize this window down to zero. */ | |
3098 | new_sizes[i] = 0; | |
047aaeb9 MR |
3099 | if (smallest > min_sizes[i]) |
3100 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
3101 | available_resize += smallest; |
3102 | --shrinkable; | |
3103 | total_removed += smallest; | |
3104 | ||
ef614e04 JD |
3105 | /* We don't know what the smallest is now. */ |
3106 | smallest = total; | |
3107 | ||
6b61353c KH |
3108 | /* Out of for, just remove one window at the time and |
3109 | check again if we have enough space. */ | |
3110 | break; | |
3111 | } | |
3112 | } | |
3113 | ||
3114 | /* Now, calculate the new sizes. Try to shrink each window | |
3115 | proportional to its size. */ | |
3116 | for (i = 0; i < nchildren; ++i) | |
3117 | { | |
047aaeb9 | 3118 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 3119 | { |
047aaeb9 MR |
3120 | int to_shrink = total_shrink * new_sizes[i] / total; |
3121 | ||
3122 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
3123 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
3124 | new_sizes[i] -= to_shrink; |
3125 | total_removed += to_shrink; | |
3126 | } | |
3127 | } | |
3128 | ||
3129 | /* Any reminder due to rounding, we just subtract from windows | |
3130 | that are left and still can be shrunk. */ | |
3131 | while (total_shrink > total_removed) | |
3132 | { | |
ef614e04 JD |
3133 | int nonzero_sizes = 0; |
3134 | int nonzero_idx = -1; | |
3135 | ||
3136 | for (i = 0; i < nchildren; ++i) | |
3137 | if (new_sizes[i] > 0) | |
3138 | { | |
3139 | ++nonzero_sizes; | |
3140 | nonzero_idx = i; | |
3141 | } | |
c49a0495 | 3142 | |
6b61353c | 3143 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3144 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3145 | { |
3146 | --new_sizes[i]; | |
3147 | ++total_removed; | |
3148 | ||
3149 | /* Out of for, just shrink one window at the time and | |
3150 | check again if we have enough space. */ | |
3151 | break; | |
3152 | } | |
ef614e04 | 3153 | |
ef614e04 JD |
3154 | /* Special case, only one window left. */ |
3155 | if (nonzero_sizes == 1) | |
3156 | break; | |
3157 | } | |
3158 | ||
3159 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3160 | while (total_shrink < total_removed) | |
3161 | { | |
3162 | for (i = 0; i < nchildren; ++i) | |
3163 | { | |
3164 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3165 | { | |
3166 | ++new_sizes[i]; | |
3167 | --total_removed; | |
3168 | break; | |
3169 | } | |
3170 | } | |
6b61353c KH |
3171 | } |
3172 | ||
047aaeb9 MR |
3173 | xfree (min_sizes); |
3174 | ||
6b61353c KH |
3175 | return new_sizes; |
3176 | } | |
949cf20f | 3177 | |
233a4a2c | 3178 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3179 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3180 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3181 | |
3182 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3183 | they are in series. If LAST_ONLY is 1, change only the last of | |
3184 | WINDOW's children when they are in series. | |
3185 | ||
3186 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3187 | windows that become too small unless NODELETE_P is 1. When |
3188 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3189 | window-min-width when resizing windows but use safe defaults instead. | |
3190 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3191 | |
3192 | static void | |
5fe0b054 | 3193 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 3194 | Lisp_Object window; |
233a4a2c | 3195 | int size, width_p, nodelete_p; |
5fe0b054 | 3196 | int first_only, last_only; |
7ab12479 | 3197 | { |
233a4a2c GM |
3198 | struct window *w = XWINDOW (window); |
3199 | struct window *c; | |
3200 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3201 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3202 | |
7ae2f10f | 3203 | size = max (0, size); |
177c0ea7 | 3204 | |
047aaeb9 MR |
3205 | /* Delete WINDOW if it's too small. */ |
3206 | if (nodelete_p != 1 && !NILP (w->parent) | |
3207 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3208 | { |
047aaeb9 MR |
3209 | delete_window (window); |
3210 | return; | |
7ab12479 JB |
3211 | } |
3212 | ||
233a4a2c | 3213 | /* Set redisplay hints. */ |
7ae2f10f GM |
3214 | w->last_modified = make_number (0); |
3215 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3216 | windows_or_buffers_changed++; |
7ae2f10f | 3217 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3218 | |
233a4a2c GM |
3219 | if (width_p) |
3220 | { | |
3221 | sideward = &w->vchild; | |
3222 | forward = &w->hchild; | |
949cf20f KS |
3223 | w->total_cols = make_number (size); |
3224 | adjust_window_margins (w); | |
233a4a2c GM |
3225 | } |
3226 | else | |
3227 | { | |
3228 | sideward = &w->hchild; | |
3229 | forward = &w->vchild; | |
949cf20f KS |
3230 | w->total_lines = make_number (size); |
3231 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3232 | } |
3233 | ||
3234 | if (!NILP (*sideward)) | |
7ab12479 | 3235 | { |
5fe0b054 | 3236 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3237 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3238 | { |
233a4a2c GM |
3239 | c = XWINDOW (child); |
3240 | if (width_p) | |
949cf20f | 3241 | c->left_col = w->left_col; |
233a4a2c | 3242 | else |
949cf20f | 3243 | c->top_line = w->top_line; |
5fe0b054 RS |
3244 | size_window (child, size, width_p, nodelete_p, |
3245 | first_only, last_only); | |
7ab12479 JB |
3246 | } |
3247 | } | |
5fe0b054 RS |
3248 | else if (!NILP (*forward) && last_only) |
3249 | { | |
3250 | /* Change the last in a series of siblings. */ | |
3251 | Lisp_Object last_child; | |
3252 | int child_size; | |
3253 | ||
3254 | for (child = *forward; !NILP (child); child = c->next) | |
3255 | { | |
3256 | c = XWINDOW (child); | |
3257 | last_child = child; | |
3258 | } | |
3259 | ||
047aaeb9 MR |
3260 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3261 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3262 | width_p, nodelete_p, first_only, last_only); |
3263 | } | |
3264 | else if (!NILP (*forward) && first_only) | |
3265 | { | |
3266 | /* Change the first in a series of siblings. */ | |
3267 | int child_size; | |
3268 | ||
3269 | child = *forward; | |
3270 | c = XWINDOW (child); | |
3271 | ||
3272 | if (width_p) | |
3273 | c->left_col = w->left_col; | |
3274 | else | |
3275 | c->top_line = w->top_line; | |
3276 | ||
047aaeb9 MR |
3277 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3278 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3279 | width_p, nodelete_p, first_only, last_only); |
3280 | } | |
233a4a2c | 3281 | else if (!NILP (*forward)) |
7ab12479 | 3282 | { |
233a4a2c GM |
3283 | int fixed_size, each, extra, n; |
3284 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3285 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3286 | int *new_sizes = NULL; |
233a4a2c | 3287 | |
5fe0b054 | 3288 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3289 | number of child windows. */ |
8b6d9dc9 | 3290 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3291 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3292 | { |
8b6d9dc9 | 3293 | int child_size; |
177c0ea7 | 3294 | |
7ab12479 | 3295 | c = XWINDOW (child); |
047aaeb9 | 3296 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3297 | total += child_size; |
177c0ea7 | 3298 | |
233a4a2c GM |
3299 | if (window_fixed_size_p (c, width_p, 0)) |
3300 | { | |
8b6d9dc9 | 3301 | fixed_size += child_size; |
233a4a2c GM |
3302 | ++nfixed; |
3303 | } | |
3304 | } | |
7ab12479 | 3305 | |
233a4a2c GM |
3306 | /* If the new size is smaller than fixed_size, or if there |
3307 | aren't any resizable windows, allow resizing fixed-size | |
3308 | windows. */ | |
3309 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3310 | ||
6b61353c | 3311 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3312 | value of extra takes care of rounding errors. */ |
3313 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3314 | if (size < total && n > 1) |
047aaeb9 MR |
3315 | new_sizes = shrink_windows (total, size, nchildren, n, |
3316 | resize_fixed_p, *forward, width_p, | |
3317 | nodelete_p == 2); | |
6b61353c KH |
3318 | else |
3319 | { | |
3320 | each = (size - total) / n; | |
3321 | extra = (size - total) - n * each; | |
3322 | } | |
233a4a2c GM |
3323 | |
3324 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3325 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3326 | last_pos = first_pos; |
6b61353c | 3327 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3328 | { |
3329 | int new_size, old_size; | |
177c0ea7 | 3330 | |
233a4a2c | 3331 | c = XWINDOW (child); |
047aaeb9 | 3332 | old_size = WINDOW_TOTAL_SIZE (c, width_p); |
233a4a2c | 3333 | new_size = old_size; |
7ab12479 | 3334 | |
233a4a2c GM |
3335 | /* The top or left edge position of this child equals the |
3336 | bottom or right edge of its predecessor. */ | |
3337 | if (width_p) | |
949cf20f | 3338 | c->left_col = make_number (last_pos); |
233a4a2c | 3339 | else |
949cf20f | 3340 | c->top_line = make_number (last_pos); |
7ab12479 | 3341 | |
233a4a2c GM |
3342 | /* If this child can be resized, do it. */ |
3343 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3344 | { | |
6b61353c | 3345 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3346 | extra = 0; |
3347 | } | |
177c0ea7 | 3348 | |
047aaeb9 | 3349 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3350 | edge positions to children, so it's not a no-op if we |
3351 | didn't change the child's size. */ | |
5fe0b054 | 3352 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3353 | |
3354 | /* Remember the bottom/right edge position of this child; it | |
3355 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3356 | last_pos += new_size; |
7ab12479 | 3357 | } |
233a4a2c | 3358 | |
70fdbb46 | 3359 | xfree (new_sizes); |
6b61353c | 3360 | |
233a4a2c GM |
3361 | /* We should have covered the parent exactly with child windows. */ |
3362 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3363 | |
7ab12479 | 3364 | /* Now delete any children that became too small. */ |
047aaeb9 | 3365 | if (nodelete_p != 1) |
233a4a2c | 3366 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3367 | { |
233a4a2c | 3368 | int child_size; |
047aaeb9 | 3369 | |
233a4a2c | 3370 | c = XWINDOW (child); |
047aaeb9 MR |
3371 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3372 | size_window (child, child_size, width_p, nodelete_p, | |
3373 | first_only, last_only); | |
7ab12479 JB |
3374 | } |
3375 | } | |
3376 | } | |
3377 | ||
233a4a2c | 3378 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3379 | WINDOW's children. NODELETE zero means windows that have become |
3380 | smaller than window-min-height in the process may be deleted. | |
3381 | NODELETE 1 means never delete windows that become too small in the | |
3382 | process. (The caller should check later and do so if appropriate.) | |
3383 | NODELETE 2 means delete only windows that have become too small to be | |
3384 | displayed correctly. */ | |
7ab12479 | 3385 | |
5e14b1fc | 3386 | void |
233a4a2c | 3387 | set_window_height (window, height, nodelete) |
7ab12479 | 3388 | Lisp_Object window; |
233a4a2c | 3389 | int height; |
7ab12479 JB |
3390 | int nodelete; |
3391 | { | |
5fe0b054 | 3392 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3393 | } |
7ab12479 | 3394 | |
233a4a2c | 3395 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3396 | WINDOW's children. NODELETE zero means windows that have become |
3397 | smaller than window-min-width in the process may be deleted. | |
3398 | NODELETE 1 means never delete windows that become too small in the | |
3399 | process. (The caller should check later and do so if appropriate.) | |
3400 | NODELETE 2 means delete only windows that have become too small to be | |
3401 | displayed correctly. */ | |
7ab12479 | 3402 | |
233a4a2c GM |
3403 | void |
3404 | set_window_width (window, width, nodelete) | |
3405 | Lisp_Object window; | |
3406 | int width; | |
3407 | int nodelete; | |
3408 | { | |
5fe0b054 | 3409 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3410 | } |
233a4a2c | 3411 | |
cdbc7fec KS |
3412 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3413 | ||
3414 | void | |
3415 | change_window_heights (window, n) | |
3416 | Lisp_Object window; | |
3417 | int n; | |
3418 | { | |
3419 | struct window *w = XWINDOW (window); | |
3420 | ||
949cf20f KS |
3421 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3422 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3423 | |
949cf20f KS |
3424 | if (INTEGERP (w->orig_top_line)) |
3425 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3426 | if (INTEGERP (w->orig_total_lines)) | |
3427 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3428 | |
3429 | /* Handle just the top child in a vertical split. */ | |
3430 | if (!NILP (w->vchild)) | |
3431 | change_window_heights (w->vchild, n); | |
3432 | ||
3433 | /* Adjust all children in a horizontal split. */ | |
3434 | for (window = w->hchild; !NILP (window); window = w->next) | |
3435 | { | |
3436 | w = XWINDOW (window); | |
3437 | change_window_heights (window, n); | |
3438 | } | |
3439 | } | |
3440 | ||
7ab12479 | 3441 | \f |
1d8d96fa | 3442 | int window_select_count; |
7ab12479 | 3443 | |
56613f06 SM |
3444 | EXFUN (Fset_window_fringes, 4); |
3445 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3446 | |
6a44ffb3 SM |
3447 | static void |
3448 | run_funs (Lisp_Object funs) | |
3449 | { | |
3450 | for (; CONSP (funs); funs = XCDR (funs)) | |
3451 | if (!EQ (XCAR (funs), Qt)) | |
3452 | call0 (XCAR (funs)); | |
3453 | } | |
3454 | ||
3455 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3456 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3457 | |
ef264c42 SM |
3458 | void |
3459 | run_window_configuration_change_hook (struct frame *f) | |
3460 | { | |
fec89261 | 3461 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3462 | Lisp_Object frame, global_wcch |
3463 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3464 | XSETFRAME (frame, f); | |
3465 | ||
3466 | if (NILP (Vrun_hooks)) | |
3467 | return; | |
3468 | ||
fec89261 MR |
3469 | if (SELECTED_FRAME () != f) |
3470 | { | |
c6932ecd MR |
3471 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
3472 | Fselect_frame (frame, Qt); | |
fec89261 | 3473 | } |
6a44ffb3 SM |
3474 | |
3475 | /* Use the right buffer. Matters when running the local hooks. */ | |
3476 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3477 | { | |
3478 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3479 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3480 | } | |
3481 | ||
3482 | /* Look for buffer-local values. */ | |
3483 | { | |
3484 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3485 | for (; CONSP (windows); windows = XCDR (windows)) | |
3486 | { | |
3487 | Lisp_Object window = XCAR (windows); | |
3488 | Lisp_Object buffer = Fwindow_buffer (window); | |
3489 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3490 | buffer))) | |
3491 | { | |
3492 | int count = SPECPDL_INDEX (); | |
3493 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3494 | select_window_norecord (window); | |
3495 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3496 | buffer)); | |
fec89261 MR |
3497 | unbind_to (count, Qnil); |
3498 | } | |
6a44ffb3 SM |
3499 | } |
3500 | } | |
047aaeb9 | 3501 | |
6a44ffb3 SM |
3502 | run_funs (global_wcch); |
3503 | unbind_to (count, Qnil); | |
ef264c42 SM |
3504 | } |
3505 | ||
5500c422 GM |
3506 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3507 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3508 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3509 | margins, fringes, and scroll-bar settings of the window are not | |
3510 | reset from the buffer's local settings. */ | |
7ab12479 | 3511 | |
5500c422 | 3512 | void |
949cf20f | 3513 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3514 | Lisp_Object window, buffer; |
949cf20f | 3515 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3516 | { |
3517 | struct window *w = XWINDOW (window); | |
3518 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3519 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3520 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3521 | |
3522 | w->buffer = buffer; | |
86e48436 RS |
3523 | |
3524 | if (EQ (window, selected_window)) | |
5500c422 | 3525 | b->last_selected_window = window; |
beb4e312 | 3526 | |
c49a0495 KS |
3527 | /* Let redisplay errors through. */ |
3528 | b->display_error_modiff = 0; | |
3529 | ||
beb4e312 | 3530 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3531 | if (INTEGERP (b->display_count)) |
3532 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3533 | b->display_time = Fcurrent_time (); | |
86e48436 | 3534 | |
d834a2e9 | 3535 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3536 | XSETFASTINT (w->window_end_vpos, 0); |
3537 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3538 | w->window_end_valid = Qnil; |
c3b232e4 | 3539 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3540 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3541 | vscroll. This case happens for example when called from |
3542 | change_frame_size_1, where we use a dummy call to | |
3543 | Fset_window_buffer on the frame's selected window (and no other) | |
3544 | just in order to run window-configuration-change-hook. | |
3545 | Resetting hscroll and vscroll here is problematic for things like | |
3546 | image-mode and doc-view-mode since it resets the image's position | |
3547 | whenever we resize the frame. */ | |
3548 | w->hscroll = w->min_hscroll = make_number (0); | |
3549 | w->vscroll = 0; | |
3550 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3551 | set_marker_restricted (w->start, | |
3552 | make_number (b->last_window_start), | |
3553 | buffer); | |
3554 | w->start_at_line_beg = Qnil; | |
3555 | w->force_start = Qnil; | |
3556 | XSETFASTINT (w->last_modified, 0); | |
3557 | XSETFASTINT (w->last_overlay_modified, 0); | |
3558 | } | |
3559 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3560 | I doubt it's worth the trouble. */ | |
7ab12479 | 3561 | windows_or_buffers_changed++; |
5b03d3c0 | 3562 | |
da39107c | 3563 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3564 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3565 | because that might itself be a local variable. */ | |
da39107c | 3566 | if (window_initialized) |
5b03d3c0 | 3567 | { |
da39107c | 3568 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3569 | Fset_buffer (buffer); |
3570 | } | |
3571 | ||
a1562258 SM |
3572 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3573 | ||
949cf20f KS |
3574 | if (!keep_margins_p) |
3575 | { | |
3576 | /* Set left and right marginal area width etc. from buffer. */ | |
3577 | ||
79fd290e | 3578 | /* This may call adjust_window_margins three times, so |
949cf20f | 3579 | temporarily disable window margins. */ |
6b61353c KH |
3580 | Lisp_Object save_left = w->left_margin_cols; |
3581 | Lisp_Object save_right = w->right_margin_cols; | |
3582 | ||
949cf20f KS |
3583 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3584 | ||
3585 | Fset_window_fringes (window, | |
3586 | b->left_fringe_width, b->right_fringe_width, | |
3587 | b->fringes_outside_margins); | |
3588 | ||
3589 | Fset_window_scroll_bars (window, | |
3590 | b->scroll_bar_width, | |
3591 | b->vertical_scroll_bar_type, Qnil); | |
3592 | ||
6b61353c KH |
3593 | w->left_margin_cols = save_left; |
3594 | w->right_margin_cols = save_right; | |
3595 | ||
949cf20f KS |
3596 | Fset_window_margins (window, |
3597 | b->left_margin_cols, b->right_margin_cols); | |
3598 | } | |
7ab12479 | 3599 | |
5500c422 GM |
3600 | if (run_hooks_p) |
3601 | { | |
3602 | if (! NILP (Vwindow_scroll_functions)) | |
3603 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3604 | Fmarker_position (w->start)); | |
ef264c42 | 3605 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3606 | } |
543f5fb1 | 3607 | |
5b03d3c0 | 3608 | unbind_to (count, Qnil); |
5500c422 | 3609 | } |
5b03d3c0 | 3610 | |
5500c422 | 3611 | |
949cf20f | 3612 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3613 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3614 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3615 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3616 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3617 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 3618 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 3619 | |
7bfac547 MR |
3620 | This function throws an error when WINDOW is strongly dedicated to its |
3621 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3622 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3623 | |
8fef9de1 MR |
3624 | This function runs `window-scroll-functions' before running |
3625 | `window-configuration-change-hook'. */) | |
d653c8cc MR |
3626 | (window, buffer_or_name, keep_margins) |
3627 | register Lisp_Object window, buffer_or_name, keep_margins; | |
5500c422 | 3628 | { |
d653c8cc | 3629 | register Lisp_Object tem, buffer; |
5500c422 | 3630 | register struct window *w = decode_window (window); |
5500c422 | 3631 | |
bed0c171 | 3632 | XSETWINDOW (window, w); |
d653c8cc | 3633 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3634 | CHECK_BUFFER (buffer); |
5500c422 GM |
3635 | if (NILP (XBUFFER (buffer)->name)) |
3636 | error ("Attempt to display deleted buffer"); | |
3637 | ||
3638 | tem = w->buffer; | |
aac0c6e3 MR |
3639 | if (NILP (tem)) |
3640 | error ("Window is deleted"); | |
3641 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3642 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3643 | { |
f5385255 SM |
3644 | if (!EQ (tem, buffer)) |
3645 | if (EQ (w->dedicated, Qt)) | |
3646 | error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem)->name)); | |
3647 | else | |
3648 | w->dedicated = Qnil; | |
5500c422 GM |
3649 | |
3650 | unshow_buffer (w); | |
3651 | } | |
3652 | ||
949cf20f | 3653 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3654 | return Qnil; |
3655 | } | |
3656 | ||
d653c8cc MR |
3657 | /* Note that selected_window can be nil when this is called from |
3658 | Fset_window_configuration. */ | |
2d0834cc | 3659 | |
14d87dc9 | 3660 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3661 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3662 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3663 | and make WINDOW the frame's selected window. Return WINDOW. |
4e822bdc | 3664 | Optional second arg NORECORD non-nil means do not put this buffer |
c6932ecd MR |
3665 | at the front of the list of recently selected ones and do not |
3666 | make this window the most recently selected one. | |
282f7831 | 3667 | |
4e822bdc MR |
3668 | Note that the main editor command loop selects the buffer of the |
3669 | selected window before each command. */) | |
14d87dc9 SM |
3670 | (window, norecord) |
3671 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3672 | { |
3673 | register struct window *w; | |
719eaeb1 | 3674 | register struct window *ow; |
1ae1a37d | 3675 | struct frame *sf; |
7ab12479 | 3676 | |
b7826503 | 3677 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3678 | |
3679 | w = XWINDOW (window); | |
50e88778 | 3680 | w->frozen_window_start_p = 0; |
7ab12479 | 3681 | |
4e822bdc MR |
3682 | if (NILP (norecord)) |
3683 | { | |
3684 | ++window_select_count; | |
3685 | XSETFASTINT (w->use_time, window_select_count); | |
13b5221f | 3686 | record_buffer (w->buffer); |
4e822bdc MR |
3687 | } |
3688 | ||
7ab12479 JB |
3689 | if (EQ (window, selected_window)) |
3690 | return window; | |
3691 | ||
ca2d5566 SM |
3692 | sf = SELECTED_FRAME (); |
3693 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3694 | { | |
3695 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3696 | /* Use this rather than Fhandle_switch_frame | |
3697 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3698 | move around in the state where a minibuffer in a separate | |
3699 | frame is active. */ | |
c6932ecd | 3700 | Fselect_frame (WINDOW_FRAME (w), norecord); |
ca2d5566 SM |
3701 | /* Fselect_frame called us back so we've done all the work already. */ |
3702 | eassert (EQ (window, selected_window)); | |
3703 | return window; | |
3704 | } | |
3705 | else | |
3706 | sf->selected_window = window; | |
3707 | ||
a46c0153 RS |
3708 | /* Store the current buffer's actual point into the |
3709 | old selected window. It belongs to that window, | |
3710 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3711 | if (!NILP (selected_window)) |
3712 | { | |
3713 | ow = XWINDOW (selected_window); | |
3714 | if (! NILP (ow->buffer)) | |
3715 | set_marker_both (ow->pointm, ow->buffer, | |
3716 | BUF_PT (XBUFFER (ow->buffer)), | |
3717 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3718 | } | |
7ab12479 JB |
3719 | |
3720 | selected_window = window; | |
7ab12479 | 3721 | |
7ab12479 JB |
3722 | Fset_buffer (w->buffer); |
3723 | ||
86e48436 RS |
3724 | XBUFFER (w->buffer)->last_selected_window = window; |
3725 | ||
7ab12479 JB |
3726 | /* Go to the point recorded in the window. |
3727 | This is important when the buffer is in more | |
3728 | than one window. It also matters when | |
3729 | redisplay_window has altered point after scrolling, | |
3730 | because it makes the change only in the window. */ | |
3731 | { | |
3732 | register int new_point = marker_position (w->pointm); | |
3733 | if (new_point < BEGV) | |
3734 | SET_PT (BEGV); | |
a9c95e08 | 3735 | else if (new_point > ZV) |
7ab12479 JB |
3736 | SET_PT (ZV); |
3737 | else | |
3738 | SET_PT (new_point); | |
3739 | } | |
3740 | ||
3741 | windows_or_buffers_changed++; | |
3742 | return window; | |
3743 | } | |
14d87dc9 SM |
3744 | |
3745 | static Lisp_Object | |
3746 | select_window_norecord (window) | |
3747 | Lisp_Object window; | |
3748 | { | |
ab6d1131 MR |
3749 | return WINDOW_LIVE_P (window) |
3750 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 3751 | } |
c6932ecd MR |
3752 | |
3753 | static Lisp_Object | |
3754 | select_frame_norecord (frame) | |
3755 | Lisp_Object frame; | |
3756 | { | |
3757 | return FRAME_LIVE_P (XFRAME (frame)) | |
3758 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3759 | } | |
b7354ddf | 3760 | \f |
87478b52 SM |
3761 | Lisp_Object |
3762 | display_buffer (buffer, not_this_window_p, override_frame) | |
3763 | Lisp_Object buffer, not_this_window_p, override_frame; | |
d07f802a | 3764 | { |
87478b52 | 3765 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3766 | } |
3767 | ||
6b61353c KH |
3768 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3769 | 0, 1, 0, | |
5a1048a5 | 3770 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3771 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3772 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c KH |
3773 | displaying that buffer. */) |
3774 | (object) | |
3775 | Lisp_Object object; | |
3776 | { | |
3777 | if (NILP (object)) | |
3778 | { | |
3779 | windows_or_buffers_changed++; | |
3780 | update_mode_lines++; | |
3781 | return Qt; | |
3782 | } | |
3783 | ||
3784 | if (WINDOWP (object)) | |
3785 | { | |
3786 | struct window *w = XWINDOW (object); | |
3787 | mark_window_display_accurate (object, 0); | |
3788 | w->update_mode_line = Qt; | |
3789 | if (BUFFERP (w->buffer)) | |
3790 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3791 | ++update_mode_lines; | |
3792 | return Qt; | |
3793 | } | |
0cc1039f | 3794 | |
6b61353c KH |
3795 | if (STRINGP (object)) |
3796 | object = Fget_buffer (object); | |
3797 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3798 | { | |
3799 | /* Walk all windows looking for buffer, and force update | |
3800 | of each of those windows. */ | |
3801 | ||
3802 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3803 | return NILP (object) ? Qnil : Qt; | |
3804 | } | |
3805 | ||
3806 | /* If nothing suitable was found, just return. | |
3807 | We could signal an error, but this feature will typically be used | |
3808 | asynchronously in timers or process sentinels, so we don't. */ | |
3809 | return Qnil; | |
3810 | } | |
3811 | ||
3812 | ||
7ab12479 JB |
3813 | void |
3814 | temp_output_buffer_show (buf) | |
3815 | register Lisp_Object buf; | |
3816 | { | |
3817 | register struct buffer *old = current_buffer; | |
3818 | register Lisp_Object window; | |
3819 | register struct window *w; | |
3820 | ||
bccd3dd1 RS |
3821 | XBUFFER (buf)->directory = current_buffer->directory; |
3822 | ||
7ab12479 | 3823 | Fset_buffer (buf); |
c6367666 | 3824 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3825 | BEGV = BEG; |
3826 | ZV = Z; | |
3827 | SET_PT (BEG); | |
06be4f85 | 3828 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3829 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3830 | #endif |
7ab12479 JB |
3831 | set_buffer_internal (old); |
3832 | ||
e67a1dea | 3833 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3834 | call1 (Vtemp_buffer_show_function, buf); |
3835 | else | |
3836 | { | |
87478b52 | 3837 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3838 | |
1ae1a37d | 3839 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3840 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3841 | Vminibuf_scroll_window = window; |
3842 | w = XWINDOW (window); | |
d834a2e9 | 3843 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3844 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3845 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3846 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3847 | |
beb4e312 | 3848 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3849 | and its buffer current. */ |
2d0834cc SM |
3850 | |
3851 | if (!NILP (Vrun_hooks) | |
3852 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3853 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3854 | { |
2d0834cc SM |
3855 | int count = SPECPDL_INDEX (); |
3856 | Lisp_Object prev_window, prev_buffer; | |
3857 | prev_window = selected_window; | |
3858 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3859 | |
2d0834cc SM |
3860 | /* Select the window that was chosen, for running the hook. |
3861 | Note: Both Fselect_window and select_window_norecord may | |
3862 | set-buffer to the buffer displayed in the window, | |
3863 | so we need to save the current buffer. --stef */ | |
3864 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3865 | record_unwind_protect (select_window_norecord, prev_window); | |
3866 | Fselect_window (window, Qt); | |
3867 | Fset_buffer (w->buffer); | |
3868 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3869 | unbind_to (count, Qnil); | |
2cccc823 RS |
3870 | } |
3871 | } | |
7ab12479 JB |
3872 | } |
3873 | \f | |
dfcf069d | 3874 | static void |
7ab12479 JB |
3875 | make_dummy_parent (window) |
3876 | Lisp_Object window; | |
3877 | { | |
cffec418 | 3878 | Lisp_Object new; |
7ab12479 | 3879 | register struct window *o, *p; |
cffec418 | 3880 | int i; |
7ab12479 | 3881 | |
cffec418 | 3882 | o = XWINDOW (window); |
26605be9 | 3883 | p = allocate_window (); |
cffec418 | 3884 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3885 | ((struct Lisp_Vector *) p)->contents[i] |
3886 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3887 | XSETWINDOW (new, p); |
7ab12479 | 3888 | |
2a1893f4 SM |
3889 | ++sequence_number; |
3890 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3891 | |
3892 | /* Put new into window structure in place of window */ | |
3893 | replace_window (window, new); | |
3894 | ||
3895 | o->next = Qnil; | |
3896 | o->prev = Qnil; | |
3897 | o->vchild = Qnil; | |
3898 | o->hchild = Qnil; | |
3899 | o->parent = new; | |
3900 | ||
3901 | p->start = Qnil; | |
3902 | p->pointm = Qnil; | |
3903 | p->buffer = Qnil; | |
3904 | } | |
3905 | ||
3906 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3907 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3908 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
3909 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
3910 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
3911 | window's scroll bar, or the divider column to its right. | |
c2755926 | 3912 | Interactively, all arguments are nil. |
c2755926 | 3913 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
3914 | The upper or leftmost window is the original one, and remains selected |
3915 | if it was selected before. | |
3916 | ||
87527026 MR |
3917 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
3918 | (window, size, horizontal) | |
3919 | Lisp_Object window, size, horizontal; | |
7ab12479 JB |
3920 | { |
3921 | register Lisp_Object new; | |
3922 | register struct window *o, *p; | |
c0807608 | 3923 | FRAME_PTR fo; |
77ae0fe3 | 3924 | register int size_int; |
7ab12479 | 3925 | |
265a9e55 | 3926 | if (NILP (window)) |
7ab12479 JB |
3927 | window = selected_window; |
3928 | else | |
b7826503 | 3929 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3930 | |
3931 | o = XWINDOW (window); | |
c0807608 | 3932 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3933 | |
77ae0fe3 | 3934 | if (NILP (size)) |
7ab12479 | 3935 | { |
87527026 | 3936 | if (!NILP (horizontal)) |
c0807608 | 3937 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3938 | the usable space in columns by two. |
3939 | We round up, since the left-hand window may include | |
3940 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3941 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3942 | else |
949cf20f | 3943 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3944 | } |
3945 | else | |
3946 | { | |
b7826503 | 3947 | CHECK_NUMBER (size); |
77ae0fe3 | 3948 | size_int = XINT (size); |
7ab12479 JB |
3949 | } |
3950 | ||
3951 | if (MINI_WINDOW_P (o)) | |
3952 | error ("Attempt to split minibuffer window"); | |
87527026 | 3953 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 3954 | error ("Attempt to split fixed-size window"); |
7ab12479 | 3955 | |
87527026 | 3956 | if (NILP (horizontal)) |
7ab12479 | 3957 | { |
047aaeb9 MR |
3958 | int window_safe_height = window_min_size_2 (o, 0, 0); |
3959 | ||
f1de8c77 | 3960 | if (size_int < window_safe_height) |
77ae0fe3 | 3961 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 3962 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 3963 | error ("Window height %d too small (after splitting)", |
949cf20f | 3964 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3965 | if (NILP (o->parent) |
3966 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3967 | { |
3968 | make_dummy_parent (window); | |
3969 | new = o->parent; | |
3970 | XWINDOW (new)->vchild = window; | |
3971 | } | |
3972 | } | |
3973 | else | |
3974 | { | |
047aaeb9 MR |
3975 | int window_safe_width = window_min_size_2 (o, 1, 0); |
3976 | ||
f1de8c77 | 3977 | if (size_int < window_safe_width) |
77ae0fe3 | 3978 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 3979 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 3980 | error ("Window width %d too small (after splitting)", |
949cf20f | 3981 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3982 | if (NILP (o->parent) |
3983 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3984 | { |
3985 | make_dummy_parent (window); | |
3986 | new = o->parent; | |
3987 | XWINDOW (new)->hchild = window; | |
3988 | } | |
3989 | } | |
3990 | ||
3991 | /* Now we know that window's parent is a vertical combination | |
3992 | if we are dividing vertically, or a horizontal combination | |
3993 | if we are making side-by-side windows */ | |
3994 | ||
3995 | windows_or_buffers_changed++; | |
c0807608 | 3996 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3997 | new = make_window (); |
3998 | p = XWINDOW (new); | |
3999 | ||
44fa5b1e | 4000 | p->frame = o->frame; |
7ab12479 | 4001 | p->next = o->next; |
265a9e55 | 4002 | if (!NILP (p->next)) |
7ab12479 JB |
4003 | XWINDOW (p->next)->prev = new; |
4004 | p->prev = window; | |
4005 | o->next = new; | |
4006 | p->parent = o->parent; | |
4007 | p->buffer = Qt; | |
5500c422 GM |
4008 | p->window_end_valid = Qnil; |
4009 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 4010 | |
949cf20f KS |
4011 | /* Duplicate special geometry settings. */ |
4012 | ||
4013 | p->left_margin_cols = o->left_margin_cols; | |
4014 | p->right_margin_cols = o->right_margin_cols; | |
4015 | p->left_fringe_width = o->left_fringe_width; | |
4016 | p->right_fringe_width = o->right_fringe_width; | |
4017 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4018 | p->scroll_bar_width = o->scroll_bar_width; | |
4019 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4020 | ||
44fa5b1e | 4021 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4022 | |
87527026 | 4023 | if (!NILP (horizontal)) |
7ab12479 | 4024 | { |
949cf20f KS |
4025 | p->total_lines = o->total_lines; |
4026 | p->top_line = o->top_line; | |
4027 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4028 | XSETFASTINT (o->total_cols, size_int); | |
4029 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4030 | adjust_window_margins (p); | |
4031 | adjust_window_margins (o); | |
7ab12479 JB |
4032 | } |
4033 | else | |
4034 | { | |
949cf20f KS |
4035 | p->left_col = o->left_col; |
4036 | p->total_cols = o->total_cols; | |
4037 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4038 | XSETFASTINT (o->total_lines, size_int); | |
4039 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4040 | } |
4041 | ||
5500c422 GM |
4042 | /* Adjust glyph matrices. */ |
4043 | adjust_glyphs (fo); | |
949cf20f KS |
4044 | |
4045 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4046 | return new; |
4047 | } | |
4048 | \f | |
56ebfae2 | 4049 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
4050 | doc: /* Make selected window SIZE lines taller. |
4051 | Interactively, if no argument is given, make the selected window one | |
4052 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
4053 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
4054 | -SIZE lines or columns. Return nil. | |
4055 | ||
4056 | This function can delete windows if they get too small. The size of | |
4057 | fixed size windows is not altered by this function. */) | |
4058 | (size, horizontal) | |
4059 | Lisp_Object size, horizontal; | |
7ab12479 | 4060 | { |
aac0c6e3 MR |
4061 | CHECK_NUMBER (size); |
4062 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 4063 | |
eeca6f6f | 4064 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4065 | |
7ab12479 JB |
4066 | return Qnil; |
4067 | } | |
4068 | ||
56ebfae2 | 4069 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
4070 | doc: /* Make selected window SIZE lines smaller. |
4071 | Interactively, if no argument is given, make the selected window one | |
4072 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
4073 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
4074 | window by -SIZE lines or columns. Return nil. | |
4075 | ||
4076 | This function can delete windows if they get too small. The size of | |
4077 | fixed size windows is not altered by this function. */) | |
4078 | (size, horizontal) | |
4079 | Lisp_Object size, horizontal; | |
4080 | { | |
4081 | CHECK_NUMBER (size); | |
4082 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 4083 | |
eeca6f6f | 4084 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4085 | |
7ab12479 JB |
4086 | return Qnil; |
4087 | } | |
4088 | ||
4089 | int | |
4090 | window_height (window) | |
4091 | Lisp_Object window; | |
4092 | { | |
4093 | register struct window *p = XWINDOW (window); | |
949cf20f | 4094 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4095 | } |
4096 | ||
4097 | int | |
4098 | window_width (window) | |
4099 | Lisp_Object window; | |
4100 | { | |
4101 | register struct window *p = XWINDOW (window); | |
949cf20f | 4102 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4103 | } |
4104 | ||
177c0ea7 | 4105 | |
7ab12479 | 4106 | #define CURBEG(w) \ |
5afc696a | 4107 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4108 | |
4109 | #define CURSIZE(w) \ | |
5afc696a | 4110 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 4111 | |
233a4a2c | 4112 | |
047aaeb9 MR |
4113 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
4114 | horizontally; zero means do it vertically. | |
f95284d2 | 4115 | |
5afc696a | 4116 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 4117 | request. If they become too small in the process, they may be |
56ebfae2 | 4118 | deleted. */ |
7ab12479 | 4119 | |
f984d4fc | 4120 | static void |
56ebfae2 | 4121 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4122 | Lisp_Object window; |
56ebfae2 | 4123 | int delta, horiz_flag; |
7ab12479 | 4124 | { |
86c8e823 | 4125 | Lisp_Object parent, next, prev; |
233a4a2c | 4126 | struct window *p; |
3578db3c KR |
4127 | Lisp_Object *sizep; |
4128 | int maximum; | |
5e14b1fc | 4129 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4130 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4131 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4132 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4133 | |
233a4a2c | 4134 | /* Give up if this window cannot be resized. */ |
5afc696a | 4135 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4136 | error ("Window is not resizable"); |
4137 | ||
4138 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4139 | while (1) |
4140 | { | |
4141 | p = XWINDOW (window); | |
4142 | parent = p->parent; | |
177c0ea7 | 4143 | |
265a9e55 | 4144 | if (NILP (parent)) |
7ab12479 | 4145 | { |
5afc696a | 4146 | if (horiz_flag) |
7ab12479 JB |
4147 | error ("No other window to side of this one"); |
4148 | break; | |
4149 | } | |
177c0ea7 | 4150 | |
5afc696a | 4151 | if (horiz_flag |
233a4a2c | 4152 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4153 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4154 | break; |
177c0ea7 | 4155 | |
7ab12479 JB |
4156 | window = parent; |
4157 | } | |
4158 | ||
05c2896a | 4159 | sizep = &CURSIZE (window); |
7ab12479 | 4160 | |
7ab12479 JB |
4161 | { |
4162 | register int maxdelta; | |
7ab12479 | 4163 | |
f95284d2 RS |
4164 | /* Compute the maximum size increment this window can have. */ |
4165 | ||
56ebfae2 RS |
4166 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4167 | /* This is a main window followed by a minibuffer. */ | |
4168 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4169 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4170 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4171 | /* This is a minibuffer following a main window. */ |
4172 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4173 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4174 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4175 | /* This is a frame with only one window, a minibuffer-only |
4176 | or a minibufferless frame. */ | |
4177 | : (delta = 0)); | |
7ab12479 JB |
4178 | |
4179 | if (delta > maxdelta) | |
4180 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4181 | the full frame, or make the only window aside from the |
4182 | minibuffer the full frame. */ | |
7ab12479 | 4183 | delta = maxdelta; |
6b54027b | 4184 | } |
d5783c40 | 4185 | |
047aaeb9 MR |
4186 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4187 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4188 | { |
543f5fb1 | 4189 | delete_window (window); |
d5783c40 | 4190 | return; |
6b54027b RS |
4191 | } |
4192 | ||
4193 | if (delta == 0) | |
4194 | return; | |
7ab12479 | 4195 | |
f95284d2 | 4196 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4197 | maximum = 0; |
9beb8baa | 4198 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4199 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4200 | horiz_flag, 0, 0, 0); |
9beb8baa | 4201 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4202 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4203 | horiz_flag, 0, 0, 0); |
db98a733 | 4204 | |
f95284d2 | 4205 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4206 | if (delta <= maximum) |
7ab12479 | 4207 | { |
db98a733 RS |
4208 | Lisp_Object first_unaffected; |
4209 | Lisp_Object first_affected; | |
233a4a2c | 4210 | int fixed_p; |
db98a733 RS |
4211 | |
4212 | next = p->next; | |
4213 | prev = p->prev; | |
4214 | first_affected = window; | |
4215 | /* Look at one sibling at a time, | |
4216 | moving away from this window in both directions alternately, | |
4217 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4218 | while (delta != 0 |
56ebfae2 | 4219 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4220 | { |
db98a733 RS |
4221 | if (! NILP (next)) |
4222 | { | |
c1636aa6 | 4223 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4224 | - window_min_size (XWINDOW (next), horiz_flag, |
4225 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4226 | if (!fixed_p) |
4227 | { | |
4228 | if (this_one > delta) | |
4229 | this_one = delta; | |
177c0ea7 | 4230 | |
233a4a2c | 4231 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4232 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4233 | |
233a4a2c GM |
4234 | delta -= this_one; |
4235 | } | |
177c0ea7 | 4236 | |
db98a733 RS |
4237 | next = XWINDOW (next)->next; |
4238 | } | |
177c0ea7 | 4239 | |
db98a733 RS |
4240 | if (delta == 0) |
4241 | break; | |
177c0ea7 | 4242 | |
56ebfae2 | 4243 | if (! NILP (prev)) |
db98a733 | 4244 | { |
c1636aa6 | 4245 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4246 | - window_min_size (XWINDOW (prev), horiz_flag, |
4247 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4248 | if (!fixed_p) |
4249 | { | |
4250 | if (this_one > delta) | |
4251 | this_one = delta; | |
177c0ea7 | 4252 | |
233a4a2c | 4253 | first_affected = prev; |
177c0ea7 | 4254 | |
233a4a2c | 4255 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4256 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4257 | |
4258 | delta -= this_one; | |
4259 | } | |
177c0ea7 | 4260 | |
db98a733 RS |
4261 | prev = XWINDOW (prev)->prev; |
4262 | } | |
4263 | } | |
4264 | ||
233a4a2c GM |
4265 | xassert (delta == 0); |
4266 | ||
db98a733 RS |
4267 | /* Now recalculate the edge positions of all the windows affected, |
4268 | based on the new sizes. */ | |
4269 | first_unaffected = next; | |
4270 | prev = first_affected; | |
4271 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4272 | prev = next, next = XWINDOW (next)->next) | |
4273 | { | |
3578db3c | 4274 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4275 | /* This does not change size of NEXT, |
4276 | but it propagates the new top edge to its children */ | |
4277 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4278 | } | |
7ab12479 JB |
4279 | } |
4280 | else | |
4281 | { | |
4282 | register int delta1; | |
4283 | register int opht = (*sizefun) (parent); | |
4284 | ||
3578db3c | 4285 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4286 | { |
4287 | /* If trying to grow this window to or beyond size of the parent, | |
4288 | just delete all the sibling windows. */ | |
dc1ab1ee | 4289 | Lisp_Object start, tem, next; |
daf516d3 | 4290 | |
dc1ab1ee RS |
4291 | start = XWINDOW (parent)->vchild; |
4292 | if (NILP (start)) | |
4293 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4294 | |
dc1ab1ee RS |
4295 | /* Delete any siblings that come after WINDOW. */ |
4296 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4297 | while (! NILP (tem)) |
4298 | { | |
4299 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4300 | delete_window (tem); |
4301 | tem = next; | |
4302 | } | |
4303 | ||
4304 | /* Delete any siblings that come after WINDOW. | |
4305 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4306 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4307 | tem = start; |
4308 | while (! EQ (tem, window)) | |
4309 | { | |
4310 | next = XWINDOW (tem)->next; | |
4311 | delete_window (tem); | |
daf516d3 RS |
4312 | tem = next; |
4313 | } | |
4314 | } | |
7ab12479 | 4315 | else |
233a4a2c GM |
4316 | { |
4317 | /* Otherwise, make delta1 just right so that if we add | |
4318 | delta1 lines to this window and to the parent, and then | |
4319 | shrink the parent back to its original size, the new | |
4320 | proportional size of this window will increase by delta. | |
4321 | ||
4322 | The function size_window will compute the new height h' | |
4323 | of the window from delta1 as: | |
177c0ea7 | 4324 | |
233a4a2c GM |
4325 | e = delta1/n |
4326 | x = delta1 - delta1/n * n for the 1st resizable child | |
4327 | h' = h + e + x | |
4328 | ||
4329 | where n is the number of children that can be resized. | |
4330 | We can ignore x by choosing a delta1 that is a multiple of | |
4331 | n. We want the height of this window to come out as | |
177c0ea7 | 4332 | |
233a4a2c GM |
4333 | h' = h + delta |
4334 | ||
4335 | So, delta1 must be | |
177c0ea7 | 4336 | |
233a4a2c GM |
4337 | h + e = h + delta |
4338 | delta1/n = delta | |
4339 | delta1 = n * delta. | |
4340 | ||
a5731348 | 4341 | The number of children n equals the number of resizable |
233a4a2c | 4342 | children of this window + 1 because we know window itself |
04bf5b65 | 4343 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4344 | |
4345 | This reasoning is not correct when other windows become too | |
4346 | small and shrink_windows refuses to delete them. Below we | |
4347 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4348 | |
4349 | struct window *w = XWINDOW (window); | |
4350 | Lisp_Object s; | |
4351 | int n = 1; | |
4352 | ||
9beb8baa | 4353 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4354 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4355 | ++n; |
9beb8baa | 4356 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4357 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4358 | ++n; |
4359 | ||
4360 | delta1 = n * delta; | |
7ab12479 | 4361 | |
daf516d3 RS |
4362 | /* Add delta1 lines or columns to this window, and to the parent, |
4363 | keeping things consistent while not affecting siblings. */ | |
4364 | XSETINT (CURSIZE (parent), opht + delta1); | |
4365 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4366 | ||
4367 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4368 | shrinking this window and siblings proportionately. This |
4369 | brings parent back to correct size. Delta1 was calculated | |
4370 | so this makes this window the desired size, taking it all | |
4371 | out of the siblings. | |
4372 | ||
4373 | Temporarily set resize_proportionally to Qt to assure that, | |
4374 | if necessary, shrink_windows deletes smaller windows rather | |
4375 | than shrink this window. */ | |
4376 | w->resize_proportionally = Qt; | |
daf516d3 | 4377 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4378 | w->resize_proportionally = Qnil; |
daf516d3 | 4379 | } |
7ab12479 JB |
4380 | } |
4381 | ||
d834a2e9 | 4382 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4383 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4384 | |
4385 | /* Adjust glyph matrices. */ | |
4386 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4387 | } |
c1636aa6 | 4388 | |
0d384044 RS |
4389 | |
4390 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4391 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4392 | zero means adjust the height, moving the bottom edge. | |
4393 | ||
4394 | Following siblings of the selected window are resized to fulfill | |
4395 | the size request. If they become too small in the process, they | |
4396 | are not deleted; instead, we signal an error. */ | |
4397 | ||
4398 | static void | |
4399 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4400 | Lisp_Object window; | |
4401 | int delta, horiz_flag; | |
4402 | { | |
4403 | Lisp_Object parent, child; | |
4404 | struct window *p; | |
4405 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4406 | int delcount = window_deletion_count; | |
4407 | ||
0d384044 RS |
4408 | CHECK_WINDOW (window); |
4409 | ||
4410 | /* Give up if this window cannot be resized. */ | |
4411 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4412 | error ("Window is not resizable"); | |
4413 | ||
4414 | while (1) | |
4415 | { | |
bd99e242 RS |
4416 | Lisp_Object first_parallel = Qnil; |
4417 | ||
c32de52a | 4418 | if (NILP (window)) |
0d384044 | 4419 | { |
5fe0b054 RS |
4420 | /* This happens if WINDOW on the previous iteration was |
4421 | at top level of the window tree. */ | |
0d384044 | 4422 | Fset_window_configuration (old_config); |
c32de52a | 4423 | error ("Specified window edge is fixed"); |
0d384044 RS |
4424 | } |
4425 | ||
c32de52a RS |
4426 | p = XWINDOW (window); |
4427 | parent = p->parent; | |
4428 | ||
bd99e242 RS |
4429 | /* See if this level has windows in parallel in the specified |
4430 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4431 | if (horiz_flag) | |
4432 | { | |
4433 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4434 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4435 | else if (NILP (parent) && !NILP (p->next)) |
4436 | { | |
4437 | /* Handle the vertical chain of main window and minibuffer | |
4438 | which has no parent. */ | |
4439 | first_parallel = window; | |
4440 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4441 | first_parallel = XWINDOW (first_parallel)->prev; | |
4442 | } | |
bd99e242 RS |
4443 | } |
4444 | else | |
4445 | { | |
4446 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4447 | first_parallel = XWINDOW (parent)->hchild; | |
4448 | } | |
4449 | ||
c32de52a | 4450 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4451 | and this window is the last one, and there is no higher level, |
4452 | its trailing edge is fixed. */ | |
4453 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4454 | && NILP (parent)) | |
c32de52a RS |
4455 | { |
4456 | Fset_window_configuration (old_config); | |
4457 | error ("Specified window edge is fixed"); | |
4458 | } | |
4459 | ||
0d384044 RS |
4460 | /* Don't make this window too small. */ |
4461 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4462 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4463 | { |
4464 | Fset_window_configuration (old_config); | |
4465 | error ("Cannot adjust window size as specified"); | |
4466 | } | |
4467 | ||
4468 | /* Clear out some redisplay caches. */ | |
4469 | XSETFASTINT (p->last_modified, 0); | |
4470 | XSETFASTINT (p->last_overlay_modified, 0); | |
4471 | ||
4472 | /* Adjust this window's edge. */ | |
4473 | XSETINT (CURSIZE (window), | |
4474 | XINT (CURSIZE (window)) + delta); | |
4475 | ||
4476 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4477 | make them smaller, and exit the loop. |
4478 | ||
0d384044 RS |
4479 | (If we reach the top of the tree and can never do this, |
4480 | we will fail and report an error, above.) */ | |
bd99e242 | 4481 | if (NILP (first_parallel)) |
0d384044 | 4482 | { |
c32de52a | 4483 | if (!NILP (p->next)) |
0d384044 | 4484 | { |
e99c7521 JD |
4485 | /* This may happen for the minibuffer. In that case |
4486 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4487 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4488 | { |
4489 | Fset_window_configuration (old_config); | |
4490 | error ("Cannot adjust window size as specified"); | |
4491 | } | |
4492 | ||
0d384044 RS |
4493 | XSETINT (CURBEG (p->next), |
4494 | XINT (CURBEG (p->next)) + delta); | |
4495 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4496 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4497 | break; |
4498 | } | |
4499 | } | |
4500 | else | |
4501 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4502 | Change the size of the other siblings. */ | |
bd99e242 | 4503 | for (child = first_parallel; |
0d384044 RS |
4504 | ! NILP (child); |
4505 | child = XWINDOW (child)->next) | |
4506 | if (! EQ (child, window)) | |
4507 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4508 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4509 | |
4510 | window = parent; | |
4511 | } | |
4512 | ||
4513 | /* If we made a window so small it got deleted, | |
4514 | we failed. Report failure. */ | |
4515 | if (delcount != window_deletion_count) | |
4516 | { | |
4517 | Fset_window_configuration (old_config); | |
4518 | error ("Cannot adjust window size as specified"); | |
4519 | } | |
4520 | ||
4521 | /* Adjust glyph matrices. */ | |
4522 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4523 | } | |
4524 | ||
7ab12479 JB |
4525 | #undef CURBEG |
4526 | #undef CURSIZE | |
4527 | ||
0d384044 RS |
4528 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4529 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4530 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4531 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4532 | Otherwise, adjust the height, moving the bottom edge. |
4533 | ||
4534 | Following siblings of the selected window are resized to fulfill | |
4535 | the size request. If they become too small in the process, they | |
4536 | are not deleted; instead, we signal an error. */) | |
4537 | (window, delta, horizontal) | |
4538 | Lisp_Object window, delta, horizontal; | |
4539 | { | |
4540 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4541 | if (NILP (window)) |
4542 | window = selected_window; | |
0d384044 RS |
4543 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4544 | ||
eeca6f6f SM |
4545 | run_window_configuration_change_hook |
4546 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4547 | |
4548 | return Qnil; | |
4549 | } | |
4550 | ||
5500c422 | 4551 | |
f984d4fc GM |
4552 | \f |
4553 | /*********************************************************************** | |
4554 | Resizing Mini-Windows | |
4555 | ***********************************************************************/ | |
4556 | ||
4557 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4558 | |
43b4a21f GM |
4559 | enum save_restore_action |
4560 | { | |
4561 | CHECK_ORIG_SIZES, | |
4562 | SAVE_ORIG_SIZES, | |
4563 | RESTORE_ORIG_SIZES | |
4564 | }; | |
4565 | ||
177c0ea7 | 4566 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4567 | enum save_restore_action)); |
f984d4fc GM |
4568 | |
4569 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4570 | from lowest windows first. */ | |
4571 | ||
4572 | static void | |
4573 | shrink_window_lowest_first (w, height) | |
4574 | struct window *w; | |
4575 | int height; | |
4576 | { | |
4577 | struct window *c; | |
4578 | Lisp_Object child; | |
4579 | int old_height; | |
4580 | ||
4581 | xassert (!MINI_WINDOW_P (w)); | |
4582 | ||
4583 | /* Set redisplay hints. */ | |
4584 | XSETFASTINT (w->last_modified, 0); | |
4585 | XSETFASTINT (w->last_overlay_modified, 0); | |
4586 | windows_or_buffers_changed++; | |
4587 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4588 | ||
949cf20f KS |
4589 | old_height = XFASTINT (w->total_lines); |
4590 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4591 | |
4592 | if (!NILP (w->hchild)) | |
4593 | { | |
4594 | for (child = w->hchild; !NILP (child); child = c->next) | |
4595 | { | |
4596 | c = XWINDOW (child); | |
949cf20f | 4597 | c->top_line = w->top_line; |
f984d4fc GM |
4598 | shrink_window_lowest_first (c, height); |
4599 | } | |
4600 | } | |
4601 | else if (!NILP (w->vchild)) | |
4602 | { | |
4603 | Lisp_Object last_child; | |
4604 | int delta = old_height - height; | |
4605 | int last_top; | |
6bbd7a29 GM |
4606 | |
4607 | last_child = Qnil; | |
177c0ea7 | 4608 | |
f984d4fc GM |
4609 | /* Find the last child. We are taking space from lowest windows |
4610 | first, so we iterate over children from the last child | |
4611 | backwards. */ | |
9beb8baa | 4612 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4613 | last_child = child; |
4614 | ||
047aaeb9 | 4615 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4616 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4617 | { | |
4618 | int this_one; | |
177c0ea7 | 4619 | |
f984d4fc | 4620 | c = XWINDOW (child); |
047aaeb9 | 4621 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4622 | |
4623 | if (this_one > delta) | |
4624 | this_one = delta; | |
4625 | ||
949cf20f | 4626 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4627 | delta -= this_one; |
4628 | } | |
4629 | ||
4630 | /* Compute new positions. */ | |
949cf20f | 4631 | last_top = XINT (w->top_line); |
f984d4fc GM |
4632 | for (child = w->vchild; !NILP (child); child = c->next) |
4633 | { | |
4634 | c = XWINDOW (child); | |
949cf20f KS |
4635 | c->top_line = make_number (last_top); |
4636 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4637 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4638 | } |
4639 | } | |
4640 | } | |
4641 | ||
4642 | ||
43b4a21f GM |
4643 | /* Save, restore, or check positions and sizes in the window tree |
4644 | rooted at W. ACTION says what to do. | |
f984d4fc | 4645 | |
949cf20f KS |
4646 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4647 | orig_total_lines members are valid for all windows in the window | |
4648 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4649 | |
43b4a21f | 4650 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4651 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4652 | |
949cf20f KS |
4653 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4654 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4655 | |
4656 | static int | |
4657 | save_restore_orig_size (w, action) | |
f984d4fc | 4658 | struct window *w; |
43b4a21f | 4659 | enum save_restore_action action; |
f984d4fc | 4660 | { |
43b4a21f GM |
4661 | int success_p = 1; |
4662 | ||
f984d4fc GM |
4663 | while (w) |
4664 | { | |
4665 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4666 | { |
4667 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4668 | success_p = 0; | |
4669 | } | |
f984d4fc | 4670 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4671 | { |
4672 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4673 | success_p = 0; | |
4674 | } | |
177c0ea7 | 4675 | |
43b4a21f | 4676 | switch (action) |
f984d4fc | 4677 | { |
43b4a21f | 4678 | case CHECK_ORIG_SIZES: |
949cf20f | 4679 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4680 | return 0; |
4681 | break; | |
4682 | ||
4683 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4684 | w->orig_top_line = w->top_line; |
4685 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4686 | XSETFASTINT (w->last_modified, 0); |
4687 | XSETFASTINT (w->last_overlay_modified, 0); | |
4688 | break; | |
4689 | ||
4690 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4691 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4692 | w->top_line = w->orig_top_line; | |
4693 | w->total_lines = w->orig_total_lines; | |
4694 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4695 | XSETFASTINT (w->last_modified, 0); |
4696 | XSETFASTINT (w->last_overlay_modified, 0); | |
4697 | break; | |
4698 | ||
4699 | default: | |
4700 | abort (); | |
f984d4fc | 4701 | } |
43b4a21f | 4702 | |
f984d4fc GM |
4703 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4704 | } | |
43b4a21f GM |
4705 | |
4706 | return success_p; | |
f984d4fc GM |
4707 | } |
4708 | ||
4709 | ||
4710 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4711 | without deleting other windows. */ | |
4712 | ||
4713 | void | |
4714 | grow_mini_window (w, delta) | |
4715 | struct window *w; | |
4716 | int delta; | |
4717 | { | |
4718 | struct frame *f = XFRAME (w->frame); | |
4719 | struct window *root; | |
177c0ea7 | 4720 | |
f984d4fc | 4721 | xassert (MINI_WINDOW_P (w)); |
522d013a JB |
4722 | /* Commenting out the following assertion goes against the stated interface |
4723 | of the function, but it currently does not seem to do anything useful. | |
4724 | See discussion of this issue in the thread for bug#4534. | |
4725 | xassert (delta >= 0); */ | |
177c0ea7 | 4726 | |
f984d4fc GM |
4727 | /* Compute how much we can enlarge the mini-window without deleting |
4728 | other windows. */ | |
4729 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
522d013a | 4730 | if (delta > 0) |
f984d4fc | 4731 | { |
047aaeb9 | 4732 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4733 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4734 | /* Note that the root window may already be smaller than |
eafa3196 | 4735 | min_height. */ |
949cf20f | 4736 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4737 | } |
177c0ea7 | 4738 | |
f984d4fc GM |
4739 | if (delta) |
4740 | { | |
4741 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4742 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4743 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4744 | |
4745 | /* Shrink other windows. */ | |
949cf20f | 4746 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4747 | |
4748 | /* Grow the mini-window. */ | |
949cf20f KS |
4749 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4750 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4751 | XSETFASTINT (w->last_modified, 0); |
4752 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4753 | |
f984d4fc GM |
4754 | adjust_glyphs (f); |
4755 | } | |
4756 | } | |
4757 | ||
4758 | ||
86c8e823 GM |
4759 | /* Shrink mini-window W. If there is recorded info about window sizes |
4760 | before a call to grow_mini_window, restore recorded window sizes. | |
4761 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4762 | line. */ | |
f984d4fc GM |
4763 | |
4764 | void | |
4765 | shrink_mini_window (w) | |
4766 | struct window *w; | |
4767 | { | |
4768 | struct frame *f = XFRAME (w->frame); | |
4769 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4770 | ||
43b4a21f | 4771 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4772 | { |
43b4a21f | 4773 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4774 | adjust_glyphs (f); |
4775 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4776 | windows_or_buffers_changed = 1; | |
4777 | } | |
949cf20f | 4778 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4779 | { |
0130fe1a GM |
4780 | /* Distribute the additional lines of the mini-window |
4781 | among the other windows. */ | |
86c8e823 GM |
4782 | Lisp_Object window; |
4783 | XSETWINDOW (window, w); | |
56ebfae2 | 4784 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4785 | } |
f984d4fc GM |
4786 | } |
4787 | ||
4788 | ||
4789 | \f | |
5500c422 GM |
4790 | /* Mark window cursors off for all windows in the window tree rooted |
4791 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4792 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4793 | the frame are cleared. */ | |
4794 | ||
4795 | void | |
4796 | mark_window_cursors_off (w) | |
4797 | struct window *w; | |
4798 | { | |
4799 | while (w) | |
4800 | { | |
4801 | if (!NILP (w->hchild)) | |
4802 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4803 | else if (!NILP (w->vchild)) | |
4804 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4805 | else | |
4806 | w->phys_cursor_on_p = 0; | |
4807 | ||
4808 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4809 | } | |
4810 | } | |
4811 | ||
4812 | ||
e9c195b1 | 4813 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4814 | |
4815 | int | |
4816 | window_internal_height (w) | |
4817 | struct window *w; | |
4818 | { | |
949cf20f | 4819 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4820 | |
e9c195b1 GM |
4821 | if (!MINI_WINDOW_P (w)) |
4822 | { | |
4823 | if (!NILP (w->parent) | |
4824 | || !NILP (w->vchild) | |
4825 | || !NILP (w->hchild) | |
4826 | || !NILP (w->next) | |
4827 | || !NILP (w->prev) | |
4828 | || WINDOW_WANTS_MODELINE_P (w)) | |
4829 | --ht; | |
7ab12479 | 4830 | |
e9c195b1 GM |
4831 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4832 | --ht; | |
4833 | } | |
7ab12479 JB |
4834 | |
4835 | return ht; | |
4836 | } | |
4837 | ||
535e0b8e JB |
4838 | |
4839 | /* Return the number of columns in W. | |
a3c87d4e | 4840 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4841 | separating W from the sibling to its right. */ |
5500c422 | 4842 | |
535e0b8e | 4843 | int |
949cf20f | 4844 | window_box_text_cols (w) |
535e0b8e JB |
4845 | struct window *w; |
4846 | { | |
5500c422 | 4847 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4848 | int width = XINT (w->total_cols); |
535e0b8e | 4849 | |
949cf20f | 4850 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4851 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4852 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4853 | else if (!FRAME_WINDOW_P (f) | |
4854 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4855 | /* The column of `|' characters separating side-by-side windows |
4856 | occupies one column only. */ | |
4857 | width -= 1; | |
4858 | ||
5500c422 | 4859 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4860 | /* On window-systems, fringes and display margins cannot be |
4861 | used for normal text. */ | |
4862 | width -= (WINDOW_FRINGE_COLS (w) | |
4863 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4864 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4865 | |
4866 | return width; | |
535e0b8e JB |
4867 | } |
4868 | ||
5500c422 GM |
4869 | \f |
4870 | /************************************************************************ | |
4871 | Window Scrolling | |
4872 | ***********************************************************************/ | |
535e0b8e | 4873 | |
5500c422 | 4874 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4875 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4876 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4877 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4878 | means don't signal an error if we try to move over BEGV or ZV, | |
4879 | respectively. */ | |
7ab12479 | 4880 | |
101d1605 RS |
4881 | static void |
4882 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4883 | Lisp_Object window; |
4884 | int n; | |
101d1605 | 4885 | int whole; |
f8026fd8 | 4886 | int noerror; |
5500c422 | 4887 | { |
cba59f77 RS |
4888 | immediate_quit = 1; |
4889 | ||
5500c422 GM |
4890 | /* If we must, use the pixel-based version which is much slower than |
4891 | the line-based one but can handle varying line heights. */ | |
4892 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4893 | window_scroll_pixel_based (window, n, whole, noerror); | |
4894 | else | |
4895 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4896 | |
4897 | immediate_quit = 0; | |
5500c422 GM |
4898 | } |
4899 | ||
4900 | ||
4901 | /* Implementation of window_scroll that works based on pixel line | |
4902 | heights. See the comment of window_scroll for parameter | |
4903 | descriptions. */ | |
4904 | ||
4905 | static void | |
4906 | window_scroll_pixel_based (window, n, whole, noerror) | |
4907 | Lisp_Object window; | |
4908 | int n; | |
4909 | int whole; | |
4910 | int noerror; | |
4911 | { | |
4912 | struct it it; | |
4913 | struct window *w = XWINDOW (window); | |
4914 | struct text_pos start; | |
5500c422 | 4915 | int this_scroll_margin; |
9d14503e | 4916 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4917 | int vscrolled = 0; |
5a857365 | 4918 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4919 | |
4920 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4921 | |
5500c422 | 4922 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4923 | the screen. Allow PT to be partially visible, otherwise |
4924 | something like (scroll-down 1) with PT in the line before | |
4925 | the partially visible one would recenter. */ | |
5a857365 KS |
4926 | |
4927 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4928 | { |
4929 | /* Move backward half the height of the window. Performance note: | |
4930 | vmotion used here is about 10% faster, but would give wrong | |
4931 | results for variable height lines. */ | |
4932 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4933 | it.current_y = it.last_visible_y; | |
f204989e | 4934 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4935 | |
5500c422 GM |
4936 | /* The function move_iterator_vertically may move over more than |
4937 | the specified y-distance. If it->w is small, e.g. a | |
4938 | mini-buffer window, we may end up in front of the window's | |
4939 | display area. This is the case when Start displaying at the | |
4940 | start of the line containing PT in this case. */ | |
4941 | if (it.current_y <= 0) | |
4942 | { | |
4943 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4944 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4945 | it.current_y = 0; |
4946 | } | |
4947 | ||
4948 | start = it.current.pos; | |
4949 | } | |
e56263e5 KS |
4950 | else if (auto_window_vscroll_p) |
4951 | { | |
5a857365 | 4952 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4953 | { |
4954 | int px; | |
4955 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4956 | if (whole) | |
e856c216 KS |
4957 | dy = max ((window_box_height (w) |
4958 | - next_screen_context_lines * dy), | |
4959 | dy); | |
e56263e5 KS |
4960 | dy *= n; |
4961 | ||
5a857365 | 4962 | if (n < 0) |
e56263e5 | 4963 | { |
5a857365 KS |
4964 | /* Only vscroll backwards if already vscrolled forwards. */ |
4965 | if (w->vscroll < 0 && rtop > 0) | |
4966 | { | |
4967 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4968 | Fset_window_vscroll (window, make_number (px), Qt); | |
4969 | return; | |
4970 | } | |
e56263e5 | 4971 | } |
5a857365 | 4972 | if (n > 0) |
e56263e5 | 4973 | { |
5a857365 KS |
4974 | /* Do vscroll if already vscrolled or only display line. */ |
4975 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4976 | { | |
4977 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4978 | Fset_window_vscroll (window, make_number (px), Qt); | |
4979 | return; | |
4980 | } | |
4981 | ||
4982 | /* Maybe modify window start instead of scrolling. */ | |
4983 | if (rbot > 0 || w->vscroll < 0) | |
4984 | { | |
4985 | int spos; | |
4986 | ||
4987 | Fset_window_vscroll (window, make_number (0), Qt); | |
4988 | /* If there are other text lines above the current row, | |
4989 | move window start to current row. Else to next row. */ | |
4990 | if (rbot > 0) | |
4991 | spos = XINT (Fline_beginning_position (Qnil)); | |
4992 | else | |
4993 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4994 | set_marker_restricted (w->start, make_number (spos), | |
4995 | w->buffer); | |
4996 | w->start_at_line_beg = Qt; | |
4997 | w->update_mode_line = Qt; | |
4998 | XSETFASTINT (w->last_modified, 0); | |
4999 | XSETFASTINT (w->last_overlay_modified, 0); | |
5000 | /* Set force_start so that redisplay_window will run the | |
5001 | window-scroll-functions. */ | |
5002 | w->force_start = Qt; | |
5003 | return; | |
5004 | } | |
e56263e5 KS |
5005 | } |
5006 | } | |
5a857365 | 5007 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5008 | Fset_window_vscroll (window, make_number (0), Qt); |
5009 | } | |
5500c422 | 5010 | |
d0c38d63 | 5011 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5012 | point in the same window line as it is now, so get that line. */ |
5013 | if (!NILP (Vscroll_preserve_screen_position)) | |
5014 | { | |
c525d842 | 5015 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
5016 | calls to scroll-up, scroll-down and other commands that |
5017 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
5018 | possibility of point becoming "stuck" on a tall line when |
5019 | scrolling by one line. */ | |
66fe93d1 | 5020 | if (window_scroll_pixel_based_preserve_y < 0 |
a4b000fb JL |
5021 | || !SYMBOLP (current_kboard->Vlast_command) |
5022 | || NILP (Fget (current_kboard->Vlast_command, Qscroll_command))) | |
c525d842 CY |
5023 | { |
5024 | start_display (&it, w, start); | |
5025 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5026 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 5027 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 5028 | } |
5500c422 GM |
5029 | } |
5030 | else | |
c876b227 SM |
5031 | window_scroll_pixel_based_preserve_y |
5032 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
5033 | |
5034 | /* Move iterator it from start the specified distance forward or | |
5035 | backward. The result is the new window start. */ | |
5036 | start_display (&it, w, start); | |
5037 | if (whole) | |
5038 | { | |
e856c216 KS |
5039 | int start_pos = IT_CHARPOS (it); |
5040 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5041 | dy = max ((window_box_height (w) | |
5042 | - next_screen_context_lines * dy), | |
5043 | dy) * n; | |
d72340d4 GM |
5044 | |
5045 | /* Note that move_it_vertically always moves the iterator to the | |
5046 | start of a line. So, if the last line doesn't have a newline, | |
5047 | we would end up at the start of the line ending at ZV. */ | |
5048 | if (dy <= 0) | |
e856c216 KS |
5049 | { |
5050 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5051 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5052 | looking at an image that is taller that the window height. */ |
5053 | while (start_pos == IT_CHARPOS (it) | |
5054 | && start_pos > BEGV) | |
5055 | move_it_by_lines (&it, -1, 1); | |
5056 | } | |
d72340d4 | 5057 | else if (dy > 0) |
bed83ee4 | 5058 | { |
bed83ee4 KS |
5059 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5060 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5061 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5062 | looking at an image that is taller that the window height. */ |
5063 | while (start_pos == IT_CHARPOS (it) | |
5064 | && start_pos < ZV) | |
5065 | move_it_by_lines (&it, 1, 1); | |
5066 | } | |
5500c422 GM |
5067 | } |
5068 | else | |
5069 | move_it_by_lines (&it, n, 1); | |
5070 | ||
96ae58c8 RS |
5071 | /* We failed if we find ZV is already on the screen (scrolling up, |
5072 | means there's nothing past the end), or if we can't start any | |
5073 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5074 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5075 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5076 | { |
5cdb3cf3 MB |
5077 | if (IT_CHARPOS (it) == ZV) |
5078 | { | |
07ce8b53 RS |
5079 | if (it.current_y < it.last_visible_y |
5080 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5081 | > it.last_visible_y)) |
a74eca50 GM |
5082 | { |
5083 | /* The last line was only partially visible, make it fully | |
5084 | visible. */ | |
5085 | w->vscroll = (it.last_visible_y | |
5086 | - it.current_y + it.max_ascent + it.max_descent); | |
5087 | adjust_glyphs (it.f); | |
5088 | } | |
5cdb3cf3 MB |
5089 | else if (noerror) |
5090 | return; | |
cf402f3f | 5091 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5092 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5093 | else |
ba96a5cf | 5094 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5095 | } |
5500c422 | 5096 | else |
5cdb3cf3 MB |
5097 | { |
5098 | if (w->vscroll != 0) | |
5099 | /* The first line was only partially visible, make it fully | |
5100 | visible. */ | |
5101 | w->vscroll = 0; | |
5102 | else if (noerror) | |
5103 | return; | |
5104 | else | |
ba96a5cf | 5105 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5106 | } |
5107 | ||
5108 | /* If control gets here, then we vscrolled. */ | |
5109 | ||
5110 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5111 | ||
5112 | /* Don't try to change the window start below. */ | |
5113 | vscrolled = 1; | |
5500c422 GM |
5114 | } |
5115 | ||
5cdb3cf3 MB |
5116 | if (! vscrolled) |
5117 | { | |
dad67609 RS |
5118 | int pos = IT_CHARPOS (it); |
5119 | int bytepos; | |
e68def1e AS |
5120 | |
5121 | /* If in the middle of a multi-glyph character move forward to | |
5122 | the next character. */ | |
5123 | if (in_display_vector_p (&it)) | |
5124 | { | |
5125 | ++pos; | |
5126 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5127 | } | |
5128 | ||
5cdb3cf3 | 5129 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5130 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5131 | w->buffer); |
dad67609 RS |
5132 | bytepos = XMARKER (w->start)->bytepos; |
5133 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5134 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5135 | w->update_mode_line = Qt; |
5136 | XSETFASTINT (w->last_modified, 0); | |
5137 | XSETFASTINT (w->last_overlay_modified, 0); | |
5138 | /* Set force_start so that redisplay_window will run the | |
5139 | window-scroll-functions. */ | |
5140 | w->force_start = Qt; | |
5141 | } | |
177c0ea7 | 5142 | |
dc297565 RS |
5143 | /* The rest of this function uses current_y in a nonstandard way, |
5144 | not including the height of the header line if any. */ | |
5500c422 | 5145 | it.current_y = it.vpos = 0; |
177c0ea7 | 5146 | |
940f53e5 RS |
5147 | /* Move PT out of scroll margins. |
5148 | This code wants current_y to be zero at the window start position | |
5149 | even if there is a header line. */ | |
5150 | this_scroll_margin = max (0, scroll_margin); | |
5151 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5152 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5153 | ||
5154 | if (n > 0) | |
5500c422 | 5155 | { |
940f53e5 RS |
5156 | /* We moved the window start towards ZV, so PT may be now |
5157 | in the scroll margin at the top. */ | |
5158 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5159 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5160 | && (NILP (Vscroll_preserve_screen_position) | |
5161 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5162 | /* We found PT at a legitimate height. Leave it alone. */ |
5163 | ; | |
66fe93d1 | 5164 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5165 | { |
fa3c3426 RS |
5166 | /* If we have a header line, take account of it. |
5167 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5168 | move_it_to (&it, -1, |
5169 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5170 | window_scroll_pixel_based_preserve_y |
5171 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5172 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5173 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5174 | } | |
5175 | else | |
5500c422 | 5176 | { |
5500c422 | 5177 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5178 | { |
5179 | int prev = it.current_y; | |
5180 | move_it_by_lines (&it, 1, 1); | |
5181 | if (prev == it.current_y) | |
5182 | break; | |
5183 | } | |
5500c422 GM |
5184 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5185 | } | |
940f53e5 RS |
5186 | } |
5187 | else if (n < 0) | |
5188 | { | |
5189 | int charpos, bytepos; | |
aed328bf | 5190 | int partial_p; |
940f53e5 | 5191 | |
66fe93d1 LT |
5192 | /* Save our position, for the |
5193 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5194 | charpos = IT_CHARPOS (it); |
5195 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5196 | |
940f53e5 RS |
5197 | /* We moved the window start towards BEGV, so PT may be now |
5198 | in the scroll margin at the bottom. */ | |
5199 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5200 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5201 | - this_scroll_margin - 1), | |
5202 | -1, | |
940f53e5 RS |
5203 | MOVE_TO_POS | MOVE_TO_Y); |
5204 | ||
aed328bf KS |
5205 | /* Save our position, in case it's correct. */ |
5206 | charpos = IT_CHARPOS (it); | |
5207 | bytepos = IT_BYTEPOS (it); | |
5208 | ||
5209 | /* See if point is on a partially visible line at the end. */ | |
5210 | if (it.what == IT_EOB) | |
5211 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5212 | else | |
5213 | { | |
5214 | move_it_by_lines (&it, 1, 1); | |
5215 | partial_p = it.current_y > it.last_visible_y; | |
5216 | } | |
5217 | ||
bdf4ec93 RS |
5218 | if (charpos == PT && !partial_p |
5219 | && (NILP (Vscroll_preserve_screen_position) | |
5220 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5221 | /* We found PT before we found the display margin, so PT is ok. */ |
5222 | ; | |
66fe93d1 | 5223 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5224 | { |
5225 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5226 | start_display (&it, w, start); | |
c525d842 CY |
5227 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5228 | here because we called start_display again and did not | |
5229 | alter it.current_y this time. */ | |
c876b227 SM |
5230 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5231 | window_scroll_pixel_based_preserve_y, -1, | |
5232 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5233 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5234 | } | |
5235 | else | |
5236 | { | |
aed328bf | 5237 | if (partial_p) |
5cdb3cf3 MB |
5238 | /* The last line was only partially visible, so back up two |
5239 | lines to make sure we're on a fully visible line. */ | |
5240 | { | |
5241 | move_it_by_lines (&it, -2, 0); | |
5242 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5243 | } | |
5244 | else | |
5245 | /* No, the position we saved is OK, so use it. */ | |
5246 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5247 | } |
5248 | } | |
5249 | } | |
5250 | ||
5251 | ||
5252 | /* Implementation of window_scroll that works based on screen lines. | |
5253 | See the comment of window_scroll for parameter descriptions. */ | |
5254 | ||
5255 | static void | |
5256 | window_scroll_line_based (window, n, whole, noerror) | |
5257 | Lisp_Object window; | |
5258 | int n; | |
5259 | int whole; | |
5260 | int noerror; | |
7ab12479 JB |
5261 | { |
5262 | register struct window *w = XWINDOW (window); | |
5500c422 | 5263 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5264 | register int pos, pos_byte; |
7ab12479 JB |
5265 | register int ht = window_internal_height (w); |
5266 | register Lisp_Object tem; | |
5267 | int lose; | |
5500c422 | 5268 | Lisp_Object bolp; |
345d45b2 | 5269 | int startpos; |
c876b227 | 5270 | Lisp_Object original_pos = Qnil; |
101d1605 | 5271 | |
d4e7cf01 GM |
5272 | /* If scrolling screen-fulls, compute the number of lines to |
5273 | scroll from the window's height. */ | |
5274 | if (whole) | |
5275 | n *= max (1, ht - next_screen_context_lines); | |
5276 | ||
101d1605 RS |
5277 | startpos = marker_position (w->start); |
5278 | ||
c876b227 SM |
5279 | if (!NILP (Vscroll_preserve_screen_position)) |
5280 | { | |
5281 | if (window_scroll_preserve_vpos <= 0 | |
a4b000fb JL |
5282 | || !SYMBOLP (current_kboard->Vlast_command) |
5283 | || NILP (Fget (current_kboard->Vlast_command, Qscroll_command))) | |
c876b227 SM |
5284 | { |
5285 | struct position posit | |
5286 | = *compute_motion (startpos, 0, 0, 0, | |
5287 | PT, ht, 0, | |
5288 | -1, XINT (w->hscroll), | |
5289 | 0, w); | |
5290 | window_scroll_preserve_vpos = posit.vpos; | |
5291 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5292 | } | |
5293 | ||
5294 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5295 | make_number (window_scroll_preserve_vpos)); | |
5296 | } | |
0a1f771a | 5297 | |
d834a2e9 | 5298 | XSETFASTINT (tem, PT); |
6ffdb539 | 5299 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5300 | |
265a9e55 | 5301 | if (NILP (tem)) |
7ab12479 | 5302 | { |
cd2be1dd | 5303 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5304 | startpos = PT; |
7ab12479 JB |
5305 | } |
5306 | ||
345d45b2 | 5307 | SET_PT (startpos); |
5ce7b543 | 5308 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5309 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5310 | pos = PT; |
b73ea88e | 5311 | pos_byte = PT_BYTE; |
7ab12479 | 5312 | bolp = Fbolp (); |
b73ea88e | 5313 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5314 | |
5315 | if (lose) | |
f8026fd8 JB |
5316 | { |
5317 | if (noerror) | |
5318 | return; | |
5319 | else | |
ba96a5cf | 5320 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5321 | } |
7ab12479 JB |
5322 | |
5323 | if (pos < ZV) | |
7ab12479 | 5324 | { |
0c7da84e RS |
5325 | int this_scroll_margin = scroll_margin; |
5326 | ||
5327 | /* Don't use a scroll margin that is negative or too large. */ | |
5328 | if (this_scroll_margin < 0) | |
5329 | this_scroll_margin = 0; | |
5330 | ||
949cf20f KS |
5331 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5332 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5333 | |
b73ea88e | 5334 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5335 | w->start_at_line_beg = bolp; |
5336 | w->update_mode_line = Qt; | |
d834a2e9 | 5337 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5338 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5339 | /* Set force_start so that redisplay_window will run |
5340 | the window-scroll-functions. */ | |
5341 | w->force_start = Qt; | |
0c7da84e | 5342 | |
bdf4ec93 RS |
5343 | if (!NILP (Vscroll_preserve_screen_position) |
5344 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5345 | { |
b73ea88e | 5346 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5347 | Fvertical_motion (original_pos, window); |
0c7da84e | 5348 | } |
101d1605 RS |
5349 | /* If we scrolled forward, put point enough lines down |
5350 | that it is outside the scroll margin. */ | |
5351 | else if (n > 0) | |
0c7da84e | 5352 | { |
101d1605 RS |
5353 | int top_margin; |
5354 | ||
5355 | if (this_scroll_margin > 0) | |
5356 | { | |
b73ea88e | 5357 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5358 | Fvertical_motion (make_number (this_scroll_margin), window); |
5359 | top_margin = PT; | |
5360 | } | |
5361 | else | |
5362 | top_margin = pos; | |
5363 | ||
5364 | if (top_margin <= opoint) | |
b73ea88e | 5365 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5366 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5367 | { |
b73ea88e | 5368 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5369 | Fvertical_motion (original_pos, window); |
101d1605 | 5370 | } |
9317a85d | 5371 | else |
335406fc | 5372 | SET_PT (top_margin); |
0c7da84e | 5373 | } |
101d1605 | 5374 | else if (n < 0) |
7ab12479 | 5375 | { |
101d1605 RS |
5376 | int bottom_margin; |
5377 | ||
0c7da84e RS |
5378 | /* If we scrolled backward, put point near the end of the window |
5379 | but not within the scroll margin. */ | |
b73ea88e | 5380 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5381 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5382 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5383 | bottom_margin = PT; | |
5384 | else | |
5385 | bottom_margin = PT + 1; | |
5386 | ||
5387 | if (bottom_margin > opoint) | |
b73ea88e | 5388 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5389 | else |
101d1605 | 5390 | { |
5500c422 | 5391 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5392 | { |
b73ea88e | 5393 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5394 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5395 | } |
5396 | else | |
5397 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5398 | } |
7ab12479 JB |
5399 | } |
5400 | } | |
5401 | else | |
f8026fd8 JB |
5402 | { |
5403 | if (noerror) | |
5404 | return; | |
5405 | else | |
ba96a5cf | 5406 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5407 | } |
7ab12479 | 5408 | } |
5500c422 GM |
5409 | |
5410 | ||
5411 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5412 | screen-full which is defined as the height of the window minus | |
5413 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5414 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5415 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5416 | |
5417 | static void | |
5418 | scroll_command (n, direction) | |
5500c422 | 5419 | Lisp_Object n; |
7ab12479 JB |
5420 | int direction; |
5421 | { | |
331379bf | 5422 | int count = SPECPDL_INDEX (); |
7ab12479 | 5423 | |
1ea40aa2 | 5424 | xassert (eabs (direction) == 1); |
5500c422 GM |
5425 | |
5426 | /* If selected window's buffer isn't current, make it current for | |
5427 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5428 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5429 | { |
5430 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5431 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5432 | |
5433 | /* Make redisplay consider other windows than just selected_window. */ | |
5434 | ++windows_or_buffers_changed; | |
95605e15 | 5435 | } |
7ab12479 | 5436 | |
265a9e55 | 5437 | if (NILP (n)) |
d4e7cf01 | 5438 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5439 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5440 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5441 | else |
5442 | { | |
5443 | n = Fprefix_numeric_value (n); | |
101d1605 | 5444 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5445 | } |
95605e15 JB |
5446 | |
5447 | unbind_to (count, Qnil); | |
7ab12479 JB |
5448 | } |
5449 | ||
e0965597 | 5450 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5451 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5452 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5453 | A near full screen is `next-screen-context-lines' less than a full screen. |
5454 | Negative ARG means scroll downward. | |
5455 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5456 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5457 | (arg) | |
413430c5 | 5458 | Lisp_Object arg; |
7ab12479 | 5459 | { |
413430c5 | 5460 | scroll_command (arg, 1); |
7ab12479 JB |
5461 | return Qnil; |
5462 | } | |
5463 | ||
e0965597 | 5464 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5465 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5466 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5467 | A near full screen is `next-screen-context-lines' less than a full screen. |
5468 | Negative ARG means scroll upward. | |
5469 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5470 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5471 | (arg) | |
413430c5 | 5472 | Lisp_Object arg; |
7ab12479 | 5473 | { |
413430c5 | 5474 | scroll_command (arg, -1); |
7ab12479 JB |
5475 | return Qnil; |
5476 | } | |
ccd0664b RS |
5477 | \f |
5478 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5479 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5480 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5481 | showing that buffer is used. |
5482 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5483 | specifies the window. This takes precedence over | |
5484 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5485 | () |
7ab12479 | 5486 | { |
ccd0664b | 5487 | Lisp_Object window; |
7ab12479 JB |
5488 | |
5489 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5490 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5491 | window = Vminibuf_scroll_window; |
5492 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5493 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5494 | { |
5495 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5496 | if (NILP (window)) |
87478b52 | 5497 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5498 | } |
5499 | else | |
dbc4e1c1 JB |
5500 | { |
5501 | /* Nothing specified; look for a neighboring window on the same | |
5502 | frame. */ | |
5503 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5504 | ||
5505 | if (EQ (window, selected_window)) | |
5506 | /* That didn't get us anywhere; look for a window on another | |
5507 | visible frame. */ | |
5508 | do | |
5509 | window = Fnext_window (window, Qnil, Qt); | |
5510 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5511 | && ! EQ (window, selected_window)); | |
5512 | } | |
5513 | ||
b7826503 | 5514 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5515 | |
5516 | if (EQ (window, selected_window)) | |
5517 | error ("There is no other window"); | |
5518 | ||
ccd0664b RS |
5519 | return window; |
5520 | } | |
5521 | ||
5522 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5523 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5524 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5525 | The next window is the one below the current one; or the one at the top | |
5526 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5527 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5528 | When calling from a program, supply as argument a number, nil, or `-'. | |
5529 | ||
fdb82f93 | 5530 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5531 | showing that buffer, popping the buffer up if necessary. |
5532 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5533 | specifies the window to scroll. This takes precedence over | |
5534 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5535 | (arg) |
d4e7cf01 | 5536 | Lisp_Object arg; |
ccd0664b | 5537 | { |
d4e7cf01 GM |
5538 | Lisp_Object window; |
5539 | struct window *w; | |
331379bf | 5540 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5541 | |
5542 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5543 | w = XWINDOW (window); |
7ab12479 JB |
5544 | |
5545 | /* Don't screw up if window_scroll gets an error. */ | |
5546 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5547 | ++windows_or_buffers_changed; |
7ab12479 JB |
5548 | |
5549 | Fset_buffer (w->buffer); | |
5550 | SET_PT (marker_position (w->pointm)); | |
5551 | ||
413430c5 | 5552 | if (NILP (arg)) |
d4e7cf01 | 5553 | window_scroll (window, 1, 1, 1); |
413430c5 | 5554 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5555 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5556 | else |
5557 | { | |
413430c5 EN |
5558 | if (CONSP (arg)) |
5559 | arg = Fcar (arg); | |
b7826503 | 5560 | CHECK_NUMBER (arg); |
101d1605 | 5561 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5562 | } |
5563 | ||
b73ea88e | 5564 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5565 | unbind_to (count, Qnil); |
7ab12479 JB |
5566 | |
5567 | return Qnil; | |
5568 | } | |
5569 | \f | |
e0965597 | 5570 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5571 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5572 | Default for ARG is window width minus 2. |
5573 | Value is the total amount of leftward horizontal scrolling in | |
5574 | effect after the change. | |
23fe745a | 5575 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5576 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5577 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5578 | by this function. This happens in an interactive call. */) |
5579 | (arg, set_minimum) | |
5580 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5581 | { |
c67fa410 GM |
5582 | Lisp_Object result; |
5583 | int hscroll; | |
5584 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5585 | |
265a9e55 | 5586 | if (NILP (arg)) |
949cf20f | 5587 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5588 | else |
5589 | arg = Fprefix_numeric_value (arg); | |
5590 | ||
c67fa410 GM |
5591 | hscroll = XINT (w->hscroll) + XINT (arg); |
5592 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5593 | ||
dc297565 | 5594 | if (!NILP (set_minimum)) |
c67fa410 GM |
5595 | w->min_hscroll = w->hscroll; |
5596 | ||
5597 | return result; | |
7ab12479 JB |
5598 | } |
5599 | ||
e0965597 | 5600 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5601 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5602 | Default for ARG is window width minus 2. |
5603 | Value is the total amount of leftward horizontal scrolling in | |
5604 | effect after the change. | |
23fe745a | 5605 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5606 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5607 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5608 | by this function. This happens in an interactive call. */) |
5609 | (arg, set_minimum) | |
a93563fd | 5610 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5611 | { |
c67fa410 GM |
5612 | Lisp_Object result; |
5613 | int hscroll; | |
5614 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5615 | |
265a9e55 | 5616 | if (NILP (arg)) |
949cf20f | 5617 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5618 | else |
5619 | arg = Fprefix_numeric_value (arg); | |
5620 | ||
c67fa410 GM |
5621 | hscroll = XINT (w->hscroll) - XINT (arg); |
5622 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5623 | |
dc297565 | 5624 | if (!NILP (set_minimum)) |
c67fa410 GM |
5625 | w->min_hscroll = w->hscroll; |
5626 | ||
5627 | return result; | |
7ab12479 JB |
5628 | } |
5629 | ||
fa832261 KS |
5630 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5631 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5632 | Returns nil, if selected window is not a minibuffer window. */) |
fa832261 KS |
5633 | () |
5634 | { | |
5635 | if (minibuf_level > 0 | |
5636 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5637 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5638 | return minibuf_selected_window; | |
5639 | ||
5640 | return Qnil; | |
5641 | } | |
5642 | ||
12c8b416 GM |
5643 | /* Value is the number of lines actually displayed in window W, |
5644 | as opposed to its height. */ | |
5645 | ||
5646 | static int | |
5647 | displayed_window_lines (w) | |
5648 | struct window *w; | |
5649 | { | |
5650 | struct it it; | |
5651 | struct text_pos start; | |
5652 | int height = window_box_height (w); | |
5653 | struct buffer *old_buffer; | |
5654 | int bottom_y; | |
5655 | ||
5656 | if (XBUFFER (w->buffer) != current_buffer) | |
5657 | { | |
5658 | old_buffer = current_buffer; | |
5659 | set_buffer_internal (XBUFFER (w->buffer)); | |
5660 | } | |
5661 | else | |
5662 | old_buffer = NULL; | |
5663 | ||
521b203e GM |
5664 | /* In case W->start is out of the accessible range, do something |
5665 | reasonable. This happens in Info mode when Info-scroll-down | |
5666 | calls (recenter -1) while W->start is 1. */ | |
5667 | if (XMARKER (w->start)->charpos < BEGV) | |
5668 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5669 | else if (XMARKER (w->start)->charpos > ZV) | |
5670 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5671 | else | |
5672 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5673 | ||
12c8b416 GM |
5674 | start_display (&it, w, start); |
5675 | move_it_vertically (&it, height); | |
c8bc6f65 | 5676 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5677 | |
1de65f51 RS |
5678 | /* rms: On a non-window display, |
5679 | the value of it.vpos at the bottom of the screen | |
5680 | seems to be 1 larger than window_box_height (w). | |
5681 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5682 | when ZV is on the last screen line | |
5683 | moves to the previous screen line instead of the last one. */ | |
5684 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5685 | height++; | |
5686 | ||
12c8b416 GM |
5687 | /* Add in empty lines at the bottom of the window. */ |
5688 | if (bottom_y < height) | |
5689 | { | |
949cf20f | 5690 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5691 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5692 | } |
5693 | ||
c8bc6f65 GM |
5694 | if (old_buffer) |
5695 | set_buffer_internal (old_buffer); | |
5696 | ||
12c8b416 GM |
5697 | return it.vpos; |
5698 | } | |
5699 | ||
5700 | ||
7ab12479 | 5701 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5702 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5703 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5704 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5705 | bottom of the window. (ARG should be less than the height of the window.) |
5706 | ||
666e158e MB |
5707 | If ARG is omitted or nil, then recenter with point on the middle line of |
5708 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5709 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5710 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5711 | height needed); if `recenter-redisplay' has the special value `tty', | |
5712 | then only tty frame are redrawn. | |
7d1d98ee | 5713 | |
fdb82f93 PJ |
5714 | Just C-u as prefix means put point in the center of the window |
5715 | and redisplay normally--don't erase and redraw the frame. */) | |
5716 | (arg) | |
413430c5 | 5717 | register Lisp_Object arg; |
7ab12479 | 5718 | { |
6df47b59 | 5719 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5720 | struct buffer *buf = XBUFFER (w->buffer); |
5721 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5722 | int center_p = 0; |
5723 | int charpos, bytepos; | |
f6b43440 RS |
5724 | int iarg; |
5725 | int this_scroll_margin; | |
7ab12479 | 5726 | |
0fa5d25b RS |
5727 | /* If redisplay is suppressed due to an error, try again. */ |
5728 | obuf->display_error_modiff = 0; | |
5729 | ||
413430c5 | 5730 | if (NILP (arg)) |
7ab12479 | 5731 | { |
666e158e MB |
5732 | if (!NILP (Vrecenter_redisplay) |
5733 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5734 | || !NILP (Ftty_type (selected_frame)))) | |
5735 | { | |
5736 | int i; | |
f02d6d5c | 5737 | |
666e158e MB |
5738 | /* Invalidate pixel data calculated for all compositions. */ |
5739 | for (i = 0; i < n_compositions; i++) | |
5740 | composition_table[i]->font = NULL; | |
7ab12479 | 5741 | |
666e158e MB |
5742 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5743 | ||
5744 | Fredraw_frame (WINDOW_FRAME (w)); | |
5745 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5746 | } | |
7d1d98ee | 5747 | |
6df47b59 | 5748 | center_p = 1; |
7ab12479 | 5749 | } |
413430c5 | 5750 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5751 | center_p = 1; |
7ab12479 JB |
5752 | else |
5753 | { | |
413430c5 | 5754 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5755 | CHECK_NUMBER (arg); |
ae12ecd7 | 5756 | iarg = XINT (arg); |
7ab12479 JB |
5757 | } |
5758 | ||
478292ed | 5759 | set_buffer_internal (buf); |
7ab12479 | 5760 | |
f6b43440 RS |
5761 | /* Do this after making BUF current |
5762 | in case scroll_margin is buffer-local. */ | |
5763 | this_scroll_margin = max (0, scroll_margin); | |
5764 | this_scroll_margin = min (this_scroll_margin, | |
5765 | XFASTINT (w->total_lines) / 4); | |
5766 | ||
521b203e | 5767 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5768 | have variable-height lines and centering point on the basis of |
5769 | line counts would lead to strange effects. */ | |
521b203e | 5770 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5771 | { |
6df47b59 GM |
5772 | if (center_p) |
5773 | { | |
521b203e GM |
5774 | struct it it; |
5775 | struct text_pos pt; | |
177c0ea7 | 5776 | |
521b203e GM |
5777 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5778 | start_display (&it, w, pt); | |
f204989e | 5779 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5780 | charpos = IT_CHARPOS (it); |
5781 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5782 | } |
f6b43440 | 5783 | else if (iarg < 0) |
6df47b59 | 5784 | { |
521b203e GM |
5785 | struct it it; |
5786 | struct text_pos pt; | |
f6b43440 | 5787 | int nlines = -iarg; |
f204989e KS |
5788 | int extra_line_spacing; |
5789 | int h = window_box_height (w); | |
177c0ea7 | 5790 | |
f6b43440 RS |
5791 | iarg = - max (-iarg, this_scroll_margin); |
5792 | ||
521b203e GM |
5793 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5794 | start_display (&it, w, pt); | |
f204989e KS |
5795 | |
5796 | /* Be sure we have the exact height of the full line containing PT. */ | |
5797 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5798 | |
d466fa4d | 5799 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5800 | height minus what's displayed in the line containing PT, |
5801 | and the lines below. */ | |
f204989e KS |
5802 | it.current_y = 0; |
5803 | it.vpos = 0; | |
d466fa4d GM |
5804 | move_it_by_lines (&it, nlines, 1); |
5805 | ||
f204989e KS |
5806 | if (it.vpos == nlines) |
5807 | h -= it.current_y; | |
5808 | else | |
5809 | { | |
5810 | /* Last line has no newline */ | |
5811 | h -= line_bottom_y (&it); | |
5812 | it.vpos++; | |
5813 | } | |
5814 | ||
5815 | /* Don't reserve space for extra line spacing of last line. */ | |
5816 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5817 | |
5818 | /* If we can't move down NLINES lines because we hit | |
5819 | the end of the buffer, count in some empty lines. */ | |
5820 | if (it.vpos < nlines) | |
f204989e KS |
5821 | { |
5822 | nlines -= it.vpos; | |
5823 | extra_line_spacing = it.extra_line_spacing; | |
5824 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5825 | } | |
5826 | if (h <= 0) | |
5827 | return Qnil; | |
201c831a | 5828 | |
f204989e | 5829 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5830 | start_display (&it, w, pt); |
f204989e KS |
5831 | it.current_y = 0; |
5832 | move_it_vertically_backward (&it, h); | |
5833 | ||
5834 | /* If extra line spacing is present, we may move too far | |
5835 | back. This causes the last line to be only partially | |
5836 | visible (which triggers redisplay to recenter that line | |
5837 | in the middle), so move forward. | |
5838 | But ignore extra line spacing on last line, as it is not | |
5839 | considered to be part of the visible height of the line. | |
5840 | */ | |
5841 | h += extra_line_spacing; | |
5842 | while (-it.current_y > h) | |
5843 | move_it_by_lines (&it, 1, 1); | |
5844 | ||
521b203e GM |
5845 | charpos = IT_CHARPOS (it); |
5846 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5847 | } |
521b203e GM |
5848 | else |
5849 | { | |
5850 | struct position pos; | |
f6b43440 | 5851 | |
f6b43440 RS |
5852 | iarg = max (iarg, this_scroll_margin); |
5853 | ||
5854 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5855 | charpos = pos.bufpos; |
5856 | bytepos = pos.bytepos; | |
5857 | } | |
5858 | } | |
5859 | else | |
5860 | { | |
5861 | struct position pos; | |
5862 | int ht = window_internal_height (w); | |
5863 | ||
5864 | if (center_p) | |
a4429c5b | 5865 | iarg = ht / 2; |
f567c488 KS |
5866 | else if (iarg < 0) |
5867 | iarg += ht; | |
f6b43440 RS |
5868 | |
5869 | /* Don't let it get into the margin at either top or bottom. */ | |
5870 | iarg = max (iarg, this_scroll_margin); | |
5871 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5872 | |
f6b43440 | 5873 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5874 | charpos = pos.bufpos; |
5875 | bytepos = pos.bytepos; | |
5876 | } | |
5877 | ||
5878 | /* Set the new window start. */ | |
5879 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5880 | w->window_end_valid = Qnil; |
177c0ea7 | 5881 | |
95605b1b RS |
5882 | w->optional_new_start = Qt; |
5883 | ||
6df47b59 GM |
5884 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5885 | w->start_at_line_beg = Qt; | |
5886 | else | |
5887 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5888 | |
478292ed | 5889 | set_buffer_internal (obuf); |
7ab12479 JB |
5890 | return Qnil; |
5891 | } | |
b7617575 GM |
5892 | |
5893 | ||
81fe0836 | 5894 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5895 | 0, 1, 0, |
5896 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5897 | WINDOW defaults to the selected window. |
8fef9de1 | 5898 | |
f039b2d2 CY |
5899 | The return value does not include the mode line, any header line, nor |
5900 | any partial-height lines in the text display area. */) | |
fdb82f93 | 5901 | (window) |
81fe0836 MB |
5902 | Lisp_Object window; |
5903 | { | |
5904 | struct window *w = decode_window (window); | |
5905 | int pixel_height = window_box_height (w); | |
949cf20f | 5906 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5907 | return make_number (line_height); |
5908 | } | |
5909 | ||
5910 | ||
7ab12479 JB |
5911 | \f |
5912 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5913 | 1, 1, "P", |
5914 | doc: /* Position point relative to window. | |
5915 | With no argument, position point at center of window. | |
5916 | An argument specifies vertical position within the window; | |
5917 | zero means top of window, negative means relative to bottom of window. */) | |
5918 | (arg) | |
b7617575 | 5919 | Lisp_Object arg; |
7ab12479 | 5920 | { |
b7617575 GM |
5921 | struct window *w = XWINDOW (selected_window); |
5922 | int lines, start; | |
540b6aa0 | 5923 | Lisp_Object window; |
f6b43440 RS |
5924 | #if 0 |
5925 | int this_scroll_margin; | |
5926 | #endif | |
7ab12479 | 5927 | |
b7617575 | 5928 | window = selected_window; |
7ab12479 JB |
5929 | start = marker_position (w->start); |
5930 | if (start < BEGV || start > ZV) | |
5931 | { | |
b7617575 | 5932 | int height = window_internal_height (w); |
cd2be1dd | 5933 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5934 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5935 | w->start_at_line_beg = Fbolp (); |
5936 | w->force_start = Qt; | |
5937 | } | |
5938 | else | |
b73ea88e | 5939 | Fgoto_char (w->start); |
7ab12479 | 5940 | |
b7617575 | 5941 | lines = displayed_window_lines (w); |
f6b43440 RS |
5942 | |
5943 | #if 0 | |
5944 | this_scroll_margin = max (0, scroll_margin); | |
5945 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5946 | #endif | |
5947 | ||
b7617575 GM |
5948 | if (NILP (arg)) |
5949 | XSETFASTINT (arg, lines / 2); | |
5950 | else | |
5951 | { | |
f6b43440 RS |
5952 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5953 | ||
5954 | if (iarg < 0) | |
5955 | iarg = iarg + lines; | |
5956 | ||
5957 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5958 | to a place inside the scroll margins (which would cause the | |
5959 | next redisplay to scroll). I wrote this code, but then concluded | |
5960 | it is probably better not to install it. However, it is here | |
5961 | inside #if 0 so as not to lose it. -- rms. */ | |
5962 | ||
5963 | /* Don't let it get into the margin at either top or bottom. */ | |
5964 | iarg = max (iarg, this_scroll_margin); | |
5965 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5966 | #endif | |
5967 | ||
5968 | arg = make_number (iarg); | |
b7617575 GM |
5969 | } |
5970 | ||
c8bc6f65 | 5971 | /* Skip past a partially visible first line. */ |
163784df | 5972 | if (w->vscroll) |
163784df MB |
5973 | XSETINT (arg, XINT (arg) + 1); |
5974 | ||
540b6aa0 | 5975 | return Fvertical_motion (arg, window); |
7ab12479 | 5976 | } |
5500c422 GM |
5977 | |
5978 | ||
7ab12479 | 5979 | \f |
5500c422 GM |
5980 | /*********************************************************************** |
5981 | Window Configuration | |
5982 | ***********************************************************************/ | |
5983 | ||
7ab12479 JB |
5984 | struct save_window_data |
5985 | { | |
d0fdb6da | 5986 | EMACS_UINT size; |
7ab12479 | 5987 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 5988 | Lisp_Object selected_frame; |
7ab12479 JB |
5989 | Lisp_Object current_window; |
5990 | Lisp_Object current_buffer; | |
5991 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5992 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5993 | Lisp_Object root_window; |
bdc727bf | 5994 | Lisp_Object focus_frame; |
cbff28e8 RS |
5995 | /* A vector, each of whose elements is a struct saved_window |
5996 | for one window. */ | |
7ab12479 | 5997 | Lisp_Object saved_windows; |
b05b4e27 SM |
5998 | |
5999 | /* All fields above are traced by the GC. | |
6000 | From `fame-cols' down, the fields are ignored by the GC. */ | |
6001 | ||
6002 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
6003 | int frame_tool_bar_lines; | |
7ab12479 | 6004 | }; |
ff06df24 | 6005 | |
cbff28e8 | 6006 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6007 | struct saved_window |
ea68264b GM |
6008 | { |
6009 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 6010 | EMACS_UINT size; |
ea68264b | 6011 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 6012 | |
ea68264b GM |
6013 | Lisp_Object window; |
6014 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6015 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6016 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6017 | Lisp_Object parent, prev; |
6018 | Lisp_Object start_at_line_beg; | |
6019 | Lisp_Object display_table; | |
949cf20f KS |
6020 | Lisp_Object orig_top_line, orig_total_lines; |
6021 | Lisp_Object left_margin_cols, right_margin_cols; | |
6022 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6023 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 6024 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
6025 | }; |
6026 | ||
7ab12479 JB |
6027 | #define SAVED_WINDOW_N(swv,n) \ |
6028 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6029 | ||
6030 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
6031 | doc: /* Return t if OBJECT is a window-configuration object. */) |
6032 | (object) | |
413430c5 | 6033 | Lisp_Object object; |
7ab12479 | 6034 | { |
6ad0381c | 6035 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6036 | } |
6037 | ||
3f8ab7bd | 6038 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
6039 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
6040 | (config) | |
3f8ab7bd RS |
6041 | Lisp_Object config; |
6042 | { | |
6043 | register struct save_window_data *data; | |
6044 | struct Lisp_Vector *saved_windows; | |
6045 | ||
663fbbba | 6046 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6047 | |
6048 | data = (struct save_window_data *) XVECTOR (config); | |
6049 | saved_windows = XVECTOR (data->saved_windows); | |
6050 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6051 | } | |
6052 | ||
d5b2799e | 6053 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6054 | Sset_window_configuration, 1, 1, 0, |
6055 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6056 | CONFIGURATION must be a value previously returned | |
6057 | by `current-window-configuration' (which see). | |
6058 | If CONFIGURATION was made from a frame that is now deleted, | |
6059 | only frame-independent values can be restored. In this case, | |
6060 | the return value is nil. Otherwise the value is t. */) | |
6061 | (configuration) | |
2f83aebe | 6062 | Lisp_Object configuration; |
7ab12479 | 6063 | { |
7ab12479 JB |
6064 | register struct save_window_data *data; |
6065 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6066 | Lisp_Object new_current_buffer; |
fd482be5 | 6067 | Lisp_Object frame; |
44fa5b1e | 6068 | FRAME_PTR f; |
72695e47 | 6069 | int old_point = -1; |
7ab12479 | 6070 | |
663fbbba | 6071 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6072 | |
2f83aebe | 6073 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6074 | saved_windows = XVECTOR (data->saved_windows); |
6075 | ||
7ab12479 | 6076 | new_current_buffer = data->current_buffer; |
265a9e55 | 6077 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6078 | new_current_buffer = Qnil; |
72695e47 | 6079 | else |
73cadfc1 DK |
6080 | { |
6081 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6082 | /* The code further down "preserves point" by saving here PT in |
6083 | old_point and then setting it later back into PT. When the | |
6084 | current-selected-window and the final-selected-window both show | |
6085 | the current buffer, this suffers from the problem that the | |
6086 | current PT is the window-point of the current-selected-window, | |
6087 | while the final PT is the point of the final-selected-window, so | |
6088 | this copy from one PT to the other would end up moving the | |
6089 | window-point of the final-selected-window to the window-point of | |
6090 | the current-selected-window. So we have to be careful which | |
6091 | point of the current-buffer we copy into old_point. */ | |
6092 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6093 | && WINDOWP (selected_window) | |
6094 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6095 | && !EQ (selected_window, data->current_window)) | |
6096 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6097 | else | |
6098 | old_point = PT; | |
73cadfc1 | 6099 | else |
203eb0aa SM |
6100 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6101 | point in new_current_buffer as of the last time this buffer was | |
6102 | used. This can be non-deterministic since it can be changed by | |
6103 | things like jit-lock by mere temporary selection of some random | |
6104 | window that happens to show this buffer. | |
6105 | So if possible we want this arbitrary choice of "which point" to | |
6106 | be the one from the to-be-selected-window so as to prevent this | |
6107 | window's cursor from being copied from another window. */ | |
6108 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6109 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6110 | && !EQ (selected_window, data->current_window)) | |
6111 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6112 | else | |
6113 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6114 | } |
7ab12479 | 6115 | |
fd482be5 JB |
6116 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6117 | f = XFRAME (frame); | |
177c0ea7 | 6118 | |
fd482be5 JB |
6119 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6120 | However, there is other stuff we should still try to do below. */ | |
6121 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6122 | { |
fd482be5 JB |
6123 | register struct window *w; |
6124 | register struct saved_window *p; | |
5500c422 GM |
6125 | struct window *root_window; |
6126 | struct window **leaf_windows; | |
6127 | int n_leaf_windows; | |
c4280705 | 6128 | int k, i, n; |
fd482be5 JB |
6129 | |
6130 | /* If the frame has been resized since this window configuration was | |
6131 | made, we change the frame to the size specified in the | |
6132 | configuration, restore the configuration, and then resize it | |
6133 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6134 | int previous_frame_lines = FRAME_LINES (f); |
6135 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6136 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6137 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6138 | |
d2b35234 RS |
6139 | /* The mouse highlighting code could get screwed up |
6140 | if it runs during this. */ | |
6141 | BLOCK_INPUT; | |
6142 | ||
b05b4e27 SM |
6143 | if (data->frame_lines != previous_frame_lines |
6144 | || data->frame_cols != previous_frame_cols) | |
6145 | change_frame_size (f, data->frame_lines, | |
6146 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 6147 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 6148 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 6149 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
6150 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6151 | make_number (0)); | |
4314246f | 6152 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6153 | if (data->frame_tool_bar_lines |
9ea173e8 | 6154 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6155 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6156 | make_number (0)); | |
4314246f | 6157 | #endif |
217f2871 | 6158 | #endif |
fd482be5 | 6159 | |
a46c0153 RS |
6160 | /* "Swap out" point from the selected window's buffer |
6161 | into the window itself. (Normally the pointm of the selected | |
6162 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6163 | restoring the window contents, and prevent it from |
6164 | being done later on when we select a new window. */ | |
596ae0cf RS |
6165 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6166 | { | |
6167 | w = XWINDOW (selected_window); | |
6168 | set_marker_both (w->pointm, | |
6169 | w->buffer, | |
6170 | BUF_PT (XBUFFER (w->buffer)), | |
6171 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6172 | } | |
6173 | ||
fd482be5 | 6174 | windows_or_buffers_changed++; |
29aeee73 | 6175 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6176 | |
5500c422 | 6177 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6178 | is a serious redisplay flickering problem. What we would |
5500c422 | 6179 | really like to do is to free only those matrices not reused |
9d14503e | 6180 | below. */ |
5500c422 GM |
6181 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
6182 | leaf_windows | |
6183 | = (struct window **) alloca (count_windows (root_window) | |
6184 | * sizeof (struct window *)); | |
6185 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6186 | ||
fd482be5 JB |
6187 | /* Kludge Alert! |
6188 | Mark all windows now on frame as "deleted". | |
6189 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6190 | |
fd482be5 JB |
6191 | Save their current buffers in their height fields, since we may |
6192 | need it later, if a buffer saved in the configuration is now | |
6193 | dead. */ | |
6194 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6195 | ||
6196 | for (k = 0; k < saved_windows->size; k++) | |
6197 | { | |
6198 | p = SAVED_WINDOW_N (saved_windows, k); | |
6199 | w = XWINDOW (p->window); | |
6200 | w->next = Qnil; | |
7ab12479 | 6201 | |
fd482be5 JB |
6202 | if (!NILP (p->parent)) |
6203 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6204 | XFASTINT (p->parent))->window; | |
6205 | else | |
6206 | w->parent = Qnil; | |
7ab12479 | 6207 | |
fd482be5 | 6208 | if (!NILP (p->prev)) |
7ab12479 | 6209 | { |
fd482be5 JB |
6210 | w->prev = SAVED_WINDOW_N (saved_windows, |
6211 | XFASTINT (p->prev))->window; | |
6212 | XWINDOW (w->prev)->next = p->window; | |
6213 | } | |
6214 | else | |
6215 | { | |
6216 | w->prev = Qnil; | |
6217 | if (!NILP (w->parent)) | |
6218 | { | |
949cf20f | 6219 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6220 | { |
6221 | XWINDOW (w->parent)->vchild = p->window; | |
6222 | XWINDOW (w->parent)->hchild = Qnil; | |
6223 | } | |
6224 | else | |
6225 | { | |
6226 | XWINDOW (w->parent)->hchild = p->window; | |
6227 | XWINDOW (w->parent)->vchild = Qnil; | |
6228 | } | |
6229 | } | |
6230 | } | |
6231 | ||
6232 | /* If we squirreled away the buffer in the window's height, | |
6233 | restore it now. */ | |
949cf20f KS |
6234 | if (BUFFERP (w->total_lines)) |
6235 | w->buffer = w->total_lines; | |
6236 | w->left_col = p->left_col; | |
6237 | w->top_line = p->top_line; | |
6238 | w->total_cols = p->total_cols; | |
6239 | w->total_lines = p->total_lines; | |
fd482be5 | 6240 | w->hscroll = p->hscroll; |
ea68264b | 6241 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6242 | w->display_table = p->display_table; |
949cf20f KS |
6243 | w->orig_top_line = p->orig_top_line; |
6244 | w->orig_total_lines = p->orig_total_lines; | |
6245 | w->left_margin_cols = p->left_margin_cols; | |
6246 | w->right_margin_cols = p->right_margin_cols; | |
6247 | w->left_fringe_width = p->left_fringe_width; | |
6248 | w->right_fringe_width = p->right_fringe_width; | |
6249 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6250 | w->scroll_bar_width = p->scroll_bar_width; | |
6251 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6252 | w->dedicated = p->dedicated; |
047aaeb9 | 6253 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6254 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6255 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6256 | |
6257 | /* Reinstall the saved buffer and pointers into it. */ | |
6258 | if (NILP (p->buffer)) | |
6259 | w->buffer = p->buffer; | |
6260 | else | |
6261 | { | |
6262 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6263 | /* If saved buffer is alive, install it. */ | |
6264 | { | |
6265 | w->buffer = p->buffer; | |
6266 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6267 | set_marker_restricted (w->start, p->start, w->buffer); |
6268 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6269 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6270 | p->mark, w->buffer); |
fd482be5 JB |
6271 | |
6272 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6273 | restore the location of point in the buffer which was |
6274 | current when the window configuration was recorded. */ | |
6b54027b RS |
6275 | if (!EQ (p->buffer, new_current_buffer) |
6276 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6277 | Fgoto_char (w->pointm); |
6278 | } | |
52a68e98 RS |
6279 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6280 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6281 | { |
fd482be5 JB |
6282 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6283 | /* This will set the markers to beginning of visible | |
6284 | range. */ | |
6285 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6286 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6287 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6288 | } |
6289 | else | |
fd482be5 | 6290 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6291 | are real. */ |
7ab12479 | 6292 | { |
fd482be5 JB |
6293 | /* Set window markers at start of visible range. */ |
6294 | if (XMARKER (w->start)->buffer == 0) | |
6295 | set_marker_restricted (w->start, make_number (0), | |
6296 | w->buffer); | |
6297 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6298 | set_marker_restricted_both (w->pointm, w->buffer, |
6299 | BUF_PT (XBUFFER (w->buffer)), | |
6300 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6301 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6302 | } |
6303 | } | |
6304 | } | |
9ace597f | 6305 | |
fd482be5 | 6306 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6307 | /* Prevent "swapping out point" in the old selected window |
6308 | using the buffer that has been restored into it. | |
a46c0153 | 6309 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6310 | selected_window = Qnil; |
a46c0153 RS |
6311 | |
6312 | /* Arrange *not* to restore point in the buffer that was | |
6313 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6314 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6315 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6316 | make_number (old_point), |
243a5ce6 | 6317 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6318 | |
14d87dc9 | 6319 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6320 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6321 | = selected_window; | |
7ab12479 | 6322 | |
db269683 | 6323 | if (NILP (data->focus_frame) |
017b2bad | 6324 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6325 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6326 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6327 | |
fd482be5 JB |
6328 | #if 0 /* I don't understand why this is needed, and it causes problems |
6329 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6330 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6331 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
c6932ecd | 6332 | 0, 0, Qnil); |
fd482be5 JB |
6333 | #endif |
6334 | ||
6335 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6336 | if (previous_frame_lines != FRAME_LINES (f) |
6337 | || previous_frame_cols != FRAME_COLS (f)) | |
6338 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6339 | 0, 0, 0); |
e3678b64 | 6340 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6341 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6342 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6343 | make_number (0)); | |
4314246f | 6344 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6345 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6346 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6347 | make_number (0)); | |
4314246f | 6348 | #endif |
217f2871 | 6349 | #endif |
d2b35234 | 6350 | |
5500c422 | 6351 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6352 | for (i = n = 0; i < n_leaf_windows; ++i) |
6353 | { | |
6354 | if (NILP (leaf_windows[i]->buffer)) | |
6355 | { | |
6356 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6357 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6358 | && NILP (leaf_windows[i]->vchild)); |
6359 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6360 | } |
6361 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6362 | ++n; | |
6363 | } | |
177c0ea7 | 6364 | |
5500c422 GM |
6365 | adjust_glyphs (f); |
6366 | ||
d2b35234 | 6367 | UNBLOCK_INPUT; |
756b6edc | 6368 | |
478292ed RS |
6369 | /* Fselect_window will have made f the selected frame, so we |
6370 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6371 | selected window too, but that doesn't make the call to | |
6372 | Fselect_window above totally superfluous; it still sets f's | |
6373 | selected window. */ | |
6374 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6375 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6376 | |
eeca6f6f | 6377 | run_window_configuration_change_hook (f); |
478292ed | 6378 | } |
bdc727bf JB |
6379 | |
6380 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6381 | Fset_buffer (new_current_buffer); |
bdc727bf | 6382 | |
478292ed | 6383 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6384 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6385 | |
3f8ab7bd | 6386 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6387 | } |
6388 | ||
44fa5b1e | 6389 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6390 | by setting their buffers to nil. */ |
6391 | ||
fd482be5 | 6392 | void |
7ab12479 JB |
6393 | delete_all_subwindows (w) |
6394 | register struct window *w; | |
6395 | { | |
265a9e55 | 6396 | if (!NILP (w->next)) |
7ab12479 | 6397 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6398 | if (!NILP (w->vchild)) |
7ab12479 | 6399 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6400 | if (!NILP (w->hchild)) |
7ab12479 | 6401 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6402 | |
949cf20f | 6403 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6404 | |
86e48436 RS |
6405 | if (!NILP (w->buffer)) |
6406 | unshow_buffer (w); | |
6407 | ||
605be8af JB |
6408 | /* We set all three of these fields to nil, to make sure that we can |
6409 | distinguish this dead window from any live window. Live leaf | |
6410 | windows will have buffer set, and combination windows will have | |
6411 | vchild or hchild set. */ | |
6412 | w->buffer = Qnil; | |
6413 | w->vchild = Qnil; | |
6414 | w->hchild = Qnil; | |
acf70840 GM |
6415 | |
6416 | Vwindow_list = Qnil; | |
7ab12479 JB |
6417 | } |
6418 | \f | |
6419 | static int | |
6420 | count_windows (window) | |
6421 | register struct window *window; | |
6422 | { | |
6423 | register int count = 1; | |
265a9e55 | 6424 | if (!NILP (window->next)) |
7ab12479 | 6425 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6426 | if (!NILP (window->vchild)) |
7ab12479 | 6427 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6428 | if (!NILP (window->hchild)) |
7ab12479 JB |
6429 | count += count_windows (XWINDOW (window->hchild)); |
6430 | return count; | |
6431 | } | |
6432 | ||
5500c422 | 6433 | |
177c0ea7 | 6434 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6435 | Value is last index + 1. */ |
6436 | ||
6437 | static int | |
6438 | get_leaf_windows (w, flat, i) | |
6439 | struct window *w; | |
6440 | struct window **flat; | |
6441 | int i; | |
6442 | { | |
6443 | while (w) | |
6444 | { | |
6445 | if (!NILP (w->hchild)) | |
6446 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6447 | else if (!NILP (w->vchild)) | |
6448 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6449 | else |
5500c422 GM |
6450 | flat[i++] = w; |
6451 | ||
6452 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6453 | } | |
6454 | ||
6455 | return i; | |
6456 | } | |
6457 | ||
6458 | ||
6459 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6460 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6461 | can be returned. */ | |
6462 | ||
6463 | struct glyph * | |
6464 | get_phys_cursor_glyph (w) | |
6465 | struct window *w; | |
6466 | { | |
6467 | struct glyph_row *row; | |
6468 | struct glyph *glyph; | |
6469 | ||
6470 | if (w->phys_cursor.vpos >= 0 | |
6471 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6472 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6473 | row->enabled_p) | |
6474 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6475 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6476 | else | |
6477 | glyph = NULL; | |
6478 | ||
6479 | return glyph; | |
6480 | } | |
6481 | ||
6482 | ||
7ab12479 JB |
6483 | static int |
6484 | save_window_save (window, vector, i) | |
6485 | Lisp_Object window; | |
6486 | struct Lisp_Vector *vector; | |
6487 | int i; | |
6488 | { | |
6489 | register struct saved_window *p; | |
6490 | register struct window *w; | |
6491 | register Lisp_Object tem; | |
6492 | ||
265a9e55 | 6493 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6494 | { |
6495 | p = SAVED_WINDOW_N (vector, i); | |
6496 | w = XWINDOW (window); | |
6497 | ||
2a1893f4 | 6498 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6499 | p->window = window; |
6500 | p->buffer = w->buffer; | |
949cf20f KS |
6501 | p->left_col = w->left_col; |
6502 | p->top_line = w->top_line; | |
6503 | p->total_cols = w->total_cols; | |
6504 | p->total_lines = w->total_lines; | |
7ab12479 | 6505 | p->hscroll = w->hscroll; |
ea68264b | 6506 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6507 | p->display_table = w->display_table; |
949cf20f KS |
6508 | p->orig_top_line = w->orig_top_line; |
6509 | p->orig_total_lines = w->orig_total_lines; | |
6510 | p->left_margin_cols = w->left_margin_cols; | |
6511 | p->right_margin_cols = w->right_margin_cols; | |
6512 | p->left_fringe_width = w->left_fringe_width; | |
6513 | p->right_fringe_width = w->right_fringe_width; | |
6514 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6515 | p->scroll_bar_width = w->scroll_bar_width; | |
6516 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6517 | p->dedicated = w->dedicated; |
047aaeb9 | 6518 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6519 | if (!NILP (w->buffer)) |
7ab12479 JB |
6520 | { |
6521 | /* Save w's value of point in the window configuration. | |
6522 | If w is the selected window, then get the value of point | |
6523 | from the buffer; pointm is garbage in the selected window. */ | |
6524 | if (EQ (window, selected_window)) | |
6525 | { | |
6526 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6527 | set_marker_both (p->pointm, w->buffer, |
6528 | BUF_PT (XBUFFER (w->buffer)), | |
6529 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6530 | } |
6531 | else | |
eeb82665 | 6532 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6533 | |
eeb82665 | 6534 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6535 | p->start_at_line_beg = w->start_at_line_beg; |
6536 | ||
6537 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6538 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6539 | } |
6540 | else | |
6541 | { | |
6542 | p->pointm = Qnil; | |
6543 | p->start = Qnil; | |
6544 | p->mark = Qnil; | |
6545 | p->start_at_line_beg = Qnil; | |
6546 | } | |
6547 | ||
265a9e55 | 6548 | if (NILP (w->parent)) |
7ab12479 JB |
6549 | p->parent = Qnil; |
6550 | else | |
6551 | p->parent = XWINDOW (w->parent)->temslot; | |
6552 | ||
265a9e55 | 6553 | if (NILP (w->prev)) |
7ab12479 JB |
6554 | p->prev = Qnil; |
6555 | else | |
6556 | p->prev = XWINDOW (w->prev)->temslot; | |
6557 | ||
265a9e55 | 6558 | if (!NILP (w->vchild)) |
7ab12479 | 6559 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6560 | if (!NILP (w->hchild)) |
7ab12479 JB |
6561 | i = save_window_save (w->hchild, vector, i); |
6562 | } | |
6563 | ||
6564 | return i; | |
6565 | } | |
6566 | ||
a0d76c27 | 6567 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6568 | Scurrent_window_configuration, 0, 1, 0, |
6569 | doc: /* Return an object representing the current window configuration of FRAME. | |
6570 | If FRAME is nil or omitted, use the selected frame. | |
6571 | This describes the number of windows, their sizes and current buffers, | |
6572 | and for each displayed buffer, where display starts, and the positions of | |
6573 | point and mark. An exception is made for point in the current buffer: | |
6574 | its value is -not- saved. | |
6575 | This also records the currently selected frame, and FRAME's focus | |
6576 | redirection (see `redirect-frame-focus'). */) | |
6577 | (frame) | |
44fa5b1e | 6578 | Lisp_Object frame; |
7ab12479 JB |
6579 | { |
6580 | register Lisp_Object tem; | |
6581 | register int n_windows; | |
6582 | register struct save_window_data *data; | |
6583 | register int i; | |
44fa5b1e | 6584 | FRAME_PTR f; |
43bad991 | 6585 | |
44fa5b1e | 6586 | if (NILP (frame)) |
1ae1a37d | 6587 | frame = selected_frame; |
b7826503 | 6588 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6589 | f = XFRAME (frame); |
7ab12479 | 6590 | |
44fa5b1e | 6591 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6592 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6593 | PVEC_WINDOW_CONFIGURATION); | |
6594 | ||
6595 | data->frame_cols = FRAME_COLS (f); | |
6596 | data->frame_lines = FRAME_LINES (f); | |
6597 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6598 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6599 | data->selected_frame = selected_frame; |
44fa5b1e | 6600 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6601 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6602 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6603 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6604 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6605 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6606 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6607 | data->saved_windows = tem; | |
6608 | for (i = 0; i < n_windows; i++) | |
6609 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6610 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6611 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6612 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6613 | return (tem); |
6614 | } | |
6615 | ||
6616 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6617 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6618 | doc: /* Execute BODY, preserving window sizes and contents. |
6619 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6620 | Restore which buffer appears in which window, where display starts, |
6621 | and the value of point and mark for each window. | |
6622 | Also restore the choice of selected window. | |
6623 | Also restore which buffer is current. | |
6924dda6 | 6624 | Does not restore the value of point in current buffer. |
7254a30c | 6625 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6626 | (args) |
7ab12479 JB |
6627 | Lisp_Object args; |
6628 | { | |
6629 | register Lisp_Object val; | |
aed13378 | 6630 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6631 | |
6632 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6633 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6634 | val = Fprogn (args); |
6635 | return unbind_to (count, val); | |
6636 | } | |
5500c422 | 6637 | |
94e16dd5 KS |
6638 | |
6639 | \f | |
6640 | /*********************************************************************** | |
6641 | Window Split Tree | |
6642 | ***********************************************************************/ | |
6643 | ||
6644 | static Lisp_Object | |
c16e1cc3 | 6645 | window_tree (w) |
94e16dd5 KS |
6646 | struct window *w; |
6647 | { | |
6648 | Lisp_Object tail = Qnil; | |
6649 | Lisp_Object result = Qnil; | |
6650 | ||
6651 | while (w) | |
6652 | { | |
6653 | Lisp_Object wn; | |
6654 | ||
6655 | XSETWINDOW (wn, w); | |
6656 | if (!NILP (w->hchild)) | |
6657 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6658 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6659 | else if (!NILP (w->vchild)) |
6660 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6661 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6662 | |
6663 | if (NILP (result)) | |
6664 | { | |
6665 | result = tail = Fcons (wn, Qnil); | |
6666 | } | |
6667 | else | |
6668 | { | |
6669 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6670 | tail = XCDR (tail); | |
6671 | } | |
6672 | ||
6673 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6674 | } | |
6675 | ||
6676 | return result; | |
6677 | } | |
6678 | ||
6679 | ||
6680 | ||
c16e1cc3 | 6681 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6682 | 0, 1, 0, |
c16e1cc3 | 6683 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6684 | |
6685 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6686 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6687 | is the frame's minibuffer window. |
6688 | ||
6689 | If the root window is not split, ROOT is the root window itself. | |
6690 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6691 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6692 | size and position of the subwindows in the split, and the rest of the |
6693 | elements are the subwindows in the split. Each of the subwindows may | |
6694 | again be a window or a list representing a window split, and so on. | |
6695 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6696 | ||
6697 | If FRAME is nil or omitted, return information on the currently | |
6698 | selected frame. */) | |
6699 | (frame) | |
6700 | Lisp_Object frame; | |
6701 | { | |
94e16dd5 KS |
6702 | FRAME_PTR f; |
6703 | ||
6704 | if (NILP (frame)) | |
6705 | frame = selected_frame; | |
6706 | ||
6707 | CHECK_FRAME (frame); | |
6708 | f = XFRAME (frame); | |
6709 | ||
6710 | if (!FRAME_LIVE_P (f)) | |
6711 | return Qnil; | |
6712 | ||
c16e1cc3 | 6713 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6714 | } |
6715 | ||
5500c422 GM |
6716 | \f |
6717 | /*********************************************************************** | |
6718 | Marginal Areas | |
6719 | ***********************************************************************/ | |
6720 | ||
6721 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6722 | 2, 3, 0, |
fdb82f93 | 6723 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6724 | If WINDOW is nil, set margins of the currently selected window. |
6725 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6726 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6727 | does the same for the right marginal area. A nil width parameter | |
6728 | means no margin. */) | |
c10ce82e JB |
6729 | (window, left_width, right_width) |
6730 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6731 | { |
6732 | struct window *w = decode_window (window); | |
5500c422 | 6733 | |
6b61353c KH |
6734 | /* Translate negative or zero widths to nil. |
6735 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6736 | |
c10ce82e | 6737 | if (!NILP (left_width)) |
6b61353c | 6738 | { |
c10ce82e JB |
6739 | CHECK_NUMBER (left_width); |
6740 | if (XINT (left_width) <= 0) | |
6741 | left_width = Qnil; | |
6b61353c | 6742 | } |
5500c422 | 6743 | |
c10ce82e | 6744 | if (!NILP (right_width)) |
6b61353c | 6745 | { |
c10ce82e JB |
6746 | CHECK_NUMBER (right_width); |
6747 | if (XINT (right_width) <= 0) | |
6748 | right_width = Qnil; | |
6b61353c | 6749 | } |
5500c422 | 6750 | |
c10ce82e JB |
6751 | if (!EQ (w->left_margin_cols, left_width) |
6752 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6753 | { |
c10ce82e JB |
6754 | w->left_margin_cols = left_width; |
6755 | w->right_margin_cols = right_width; | |
949cf20f KS |
6756 | |
6757 | adjust_window_margins (w); | |
6758 | ||
6759 | ++windows_or_buffers_changed; | |
6760 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6761 | } | |
5500c422 | 6762 | |
5500c422 GM |
6763 | return Qnil; |
6764 | } | |
6765 | ||
6766 | ||
6767 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6768 | 0, 1, 0, | |
fdb82f93 PJ |
6769 | doc: /* Get width of marginal areas of window WINDOW. |
6770 | If WINDOW is omitted or nil, use the currently selected window. | |
6771 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6772 | If a marginal area does not exist, its width will be returned | |
6773 | as nil. */) | |
6774 | (window) | |
5500c422 GM |
6775 | Lisp_Object window; |
6776 | { | |
6777 | struct window *w = decode_window (window); | |
949cf20f KS |
6778 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6779 | } | |
6780 | ||
6781 | ||
6782 | \f | |
6783 | /*********************************************************************** | |
6784 | Fringes | |
6785 | ***********************************************************************/ | |
6786 | ||
6787 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6788 | 2, 4, 0, | |
6b61353c KH |
6789 | doc: /* Set the fringe widths of window WINDOW. |
6790 | If WINDOW is nil, set the fringe widths of the currently selected | |
6791 | window. | |
6792 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6793 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6794 | fringe width. If a fringe width arg is nil, that means to use the | |
6795 | frame's default fringe width. Default fringe widths can be set with | |
6796 | the command `set-fringe-style'. | |
6797 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6798 | outside of the display margins. By default, fringes are drawn between | |
6799 | display marginal areas and the text area. */) | |
c10ce82e JB |
6800 | (window, left_width, right_width, outside_margins) |
6801 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6802 | { |
6803 | struct window *w = decode_window (window); | |
6804 | ||
c10ce82e JB |
6805 | if (!NILP (left_width)) |
6806 | CHECK_NATNUM (left_width); | |
6807 | if (!NILP (right_width)) | |
6808 | CHECK_NATNUM (right_width); | |
5a857365 | 6809 | |
017e297e | 6810 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6811 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6812 | && (!EQ (w->left_fringe_width, left_width) | |
6813 | || !EQ (w->right_fringe_width, right_width) | |
6814 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6815 | { |
c10ce82e JB |
6816 | w->left_fringe_width = left_width; |
6817 | w->right_fringe_width = right_width; | |
949cf20f KS |
6818 | w->fringes_outside_margins = outside_margins; |
6819 | ||
6820 | adjust_window_margins (w); | |
6821 | ||
6822 | clear_glyph_matrix (w->current_matrix); | |
6823 | w->window_end_valid = Qnil; | |
6824 | ||
6825 | ++windows_or_buffers_changed; | |
6826 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6827 | } | |
6828 | ||
6829 | return Qnil; | |
6830 | } | |
6831 | ||
6832 | ||
6833 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6834 | 0, 1, 0, | |
6835 | doc: /* Get width of fringes of window WINDOW. | |
6836 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6837 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6838 | (window) |
6839 | Lisp_Object window; | |
6840 | { | |
6841 | struct window *w = decode_window (window); | |
d46c6df5 | 6842 | |
949cf20f KS |
6843 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6844 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6845 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6846 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6847 | } |
6848 | ||
6849 | ||
6850 | \f | |
6851 | /*********************************************************************** | |
6852 | Scroll bars | |
6853 | ***********************************************************************/ | |
6854 | ||
6855 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6856 | 2, 4, 0, | |
6857 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6858 | If window is nil, set scroll bars of the currently selected window. | |
6859 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6860 | this is automatically adjusted to a multiple of the frame column width. | |
6861 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6862 | bar: left, right, or nil. | |
6b61353c | 6863 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6864 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6865 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6866 | (window, width, vertical_type, horizontal_type) |
6867 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6868 | { |
6869 | struct window *w = decode_window (window); | |
6870 | ||
6871 | if (!NILP (width)) | |
0f8fe9a2 SM |
6872 | { |
6873 | CHECK_NATNUM (width); | |
949cf20f | 6874 | |
0f8fe9a2 SM |
6875 | if (XINT (width) == 0) |
6876 | vertical_type = Qnil; | |
6877 | } | |
949cf20f | 6878 | |
413a79ad | 6879 | if (!(NILP (vertical_type) |
0cc1039f | 6880 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6881 | || EQ (vertical_type, Qright) |
6882 | || EQ (vertical_type, Qt))) | |
6883 | error ("Invalid type of vertical scroll bar"); | |
6884 | ||
949cf20f KS |
6885 | if (!EQ (w->scroll_bar_width, width) |
6886 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6887 | { | |
6888 | w->scroll_bar_width = width; | |
6889 | w->vertical_scroll_bar_type = vertical_type; | |
6890 | ||
6891 | adjust_window_margins (w); | |
6892 | ||
6893 | clear_glyph_matrix (w->current_matrix); | |
6894 | w->window_end_valid = Qnil; | |
6895 | ||
6896 | ++windows_or_buffers_changed; | |
6897 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6898 | } | |
6899 | ||
6900 | return Qnil; | |
6901 | } | |
6902 | ||
6903 | ||
6904 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6905 | 0, 1, 0, | |
6906 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6907 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6908 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6909 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6910 | value. */) | |
949cf20f KS |
6911 | (window) |
6912 | Lisp_Object window; | |
6913 | { | |
6914 | struct window *w = decode_window (window); | |
6915 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6916 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6917 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6918 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6919 | Fcons (w->vertical_scroll_bar_type, | |
6920 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6921 | } |
6922 | ||
6923 | ||
7ab12479 | 6924 | \f |
5500c422 GM |
6925 | /*********************************************************************** |
6926 | Smooth scrolling | |
6927 | ***********************************************************************/ | |
6928 | ||
0cc1039f | 6929 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6930 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6931 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6932 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6933 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6934 | (window, pixels_p) |
6935 | Lisp_Object window, pixels_p; | |
5500c422 | 6936 | { |
47004952 | 6937 | Lisp_Object result; |
5500c422 GM |
6938 | struct frame *f; |
6939 | struct window *w; | |
177c0ea7 | 6940 | |
5500c422 GM |
6941 | if (NILP (window)) |
6942 | window = selected_window; | |
47004952 | 6943 | else |
b7826503 | 6944 | CHECK_WINDOW (window); |
5500c422 GM |
6945 | w = XWINDOW (window); |
6946 | f = XFRAME (w->frame); | |
177c0ea7 | 6947 | |
5500c422 | 6948 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6949 | result = (NILP (pixels_p) |
6950 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6951 | : make_number (-w->vscroll)); | |
5500c422 | 6952 | else |
47004952 GM |
6953 | result = make_number (0); |
6954 | return result; | |
5500c422 GM |
6955 | } |
6956 | ||
6957 | ||
6958 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6959 | 2, 3, 0, |
fdb82f93 | 6960 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6961 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6962 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6963 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6964 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6965 | corresponds to an integral number of pixels. The return value is the | |
6966 | result of this rounding. | |
6967 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6968 | (window, vscroll, pixels_p) |
6969 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6970 | { |
6971 | struct window *w; | |
6972 | struct frame *f; | |
177c0ea7 | 6973 | |
5500c422 GM |
6974 | if (NILP (window)) |
6975 | window = selected_window; | |
47004952 | 6976 | else |
b7826503 PJ |
6977 | CHECK_WINDOW (window); |
6978 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6979 | |
5500c422 GM |
6980 | w = XWINDOW (window); |
6981 | f = XFRAME (w->frame); | |
6982 | ||
6983 | if (FRAME_WINDOW_P (f)) | |
6984 | { | |
6985 | int old_dy = w->vscroll; | |
177c0ea7 | 6986 | |
0cc1039f KS |
6987 | w->vscroll = - (NILP (pixels_p) |
6988 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6989 | : XFLOATINT (vscroll)); | |
47004952 | 6990 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6991 | |
e56263e5 KS |
6992 | if (w->vscroll != old_dy) |
6993 | { | |
6994 | /* Adjust glyph matrix of the frame if the virtual display | |
6995 | area becomes larger than before. */ | |
6996 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6997 | adjust_glyphs (f); | |
177c0ea7 | 6998 | |
e56263e5 KS |
6999 | /* Prevent redisplay shortcuts. */ |
7000 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7001 | } | |
5500c422 | 7002 | } |
177c0ea7 | 7003 | |
0cc1039f | 7004 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7005 | } |
177c0ea7 | 7006 | |
7bbb5782 GM |
7007 | \f |
7008 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7009 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7010 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
7011 | |
7012 | void | |
f95464e4 | 7013 | foreach_window (f, fn, user_data) |
7bbb5782 | 7014 | struct frame *f; |
f95464e4 GM |
7015 | int (* fn) P_ ((struct window *, void *)); |
7016 | void *user_data; | |
7bbb5782 | 7017 | { |
56f2de10 | 7018 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
7019 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
7020 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7021 | } |
7022 | ||
7023 | ||
7024 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7025 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7026 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7027 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7028 | |
67492200 | 7029 | static int |
f95464e4 | 7030 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 7031 | struct window *w; |
f95464e4 GM |
7032 | int (* fn) P_ ((struct window *, void *)); |
7033 | void *user_data; | |
7bbb5782 | 7034 | { |
67492200 | 7035 | int cont; |
177c0ea7 | 7036 | |
67492200 | 7037 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7038 | { |
7039 | if (!NILP (w->hchild)) | |
f95464e4 | 7040 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7041 | else if (!NILP (w->vchild)) |
f95464e4 | 7042 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7043 | else |
0f532a9a | 7044 | cont = fn (w, user_data); |
177c0ea7 | 7045 | |
7bbb5782 GM |
7046 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7047 | } | |
67492200 GM |
7048 | |
7049 | return cont; | |
7bbb5782 GM |
7050 | } |
7051 | ||
7052 | ||
6d194a45 | 7053 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7054 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7055 | the window start. */ |
7056 | ||
67492200 | 7057 | static int |
7bbb5782 GM |
7058 | freeze_window_start (w, freeze_p) |
7059 | struct window *w; | |
f95464e4 | 7060 | void *freeze_p; |
7bbb5782 | 7061 | { |
08c1d235 SM |
7062 | if (MINI_WINDOW_P (w) |
7063 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
7064 | && (w == XWINDOW (selected_window) | |
7065 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
7066 | && ! NILP (Vminibuf_scroll_window) | |
7067 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 7068 | freeze_p = NULL; |
177c0ea7 | 7069 | |
f95464e4 | 7070 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7071 | return 1; |
7bbb5782 GM |
7072 | } |
7073 | ||
7074 | ||
7075 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7076 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7077 | means freeze the window start. */ | |
7078 | ||
7079 | void | |
7080 | freeze_window_starts (f, freeze_p) | |
7081 | struct frame *f; | |
7082 | int freeze_p; | |
7083 | { | |
cbccabec | 7084 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7085 | } |
5500c422 GM |
7086 | |
7087 | \f | |
7088 | /*********************************************************************** | |
7089 | Initialization | |
7090 | ***********************************************************************/ | |
7091 | ||
cbff28e8 | 7092 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 7093 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
7094 | |
7095 | int | |
2f8274be | 7096 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7097 | Lisp_Object c1, c2; |
2f8274be | 7098 | int ignore_positions; |
cbff28e8 RS |
7099 | { |
7100 | register struct save_window_data *d1, *d2; | |
7101 | struct Lisp_Vector *sw1, *sw2; | |
7102 | int i; | |
7103 | ||
663fbbba KS |
7104 | CHECK_WINDOW_CONFIGURATION (c1); |
7105 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7106 | |
cbff28e8 RS |
7107 | d1 = (struct save_window_data *) XVECTOR (c1); |
7108 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7109 | sw1 = XVECTOR (d1->saved_windows); | |
7110 | sw2 = XVECTOR (d2->saved_windows); | |
7111 | ||
b05b4e27 | 7112 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 7113 | return 0; |
b05b4e27 | 7114 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 7115 | return 0; |
b05b4e27 | 7116 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
7117 | return 0; |
7118 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7119 | return 0; | |
7120 | /* Don't compare the current_window field directly. | |
7121 | Instead see w1_is_current and w2_is_current, below. */ | |
7122 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7123 | return 0; | |
2f8274be | 7124 | if (! ignore_positions) |
3f49fddc KS |
7125 | { |
7126 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7127 | return 0; | |
7128 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7129 | return 0; | |
7130 | } | |
cbff28e8 RS |
7131 | /* Don't compare the root_window field. |
7132 | We don't require the two configurations | |
7133 | to use the same window object, | |
7134 | and the two root windows must be equivalent | |
7135 | if everything else compares equal. */ | |
7136 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7137 | return 0; | |
cbff28e8 RS |
7138 | |
7139 | /* Verify that the two confis have the same number of windows. */ | |
7140 | if (sw1->size != sw2->size) | |
7141 | return 0; | |
7142 | ||
7143 | for (i = 0; i < sw1->size; i++) | |
7144 | { | |
7145 | struct saved_window *p1, *p2; | |
7146 | int w1_is_current, w2_is_current; | |
7147 | ||
7148 | p1 = SAVED_WINDOW_N (sw1, i); | |
7149 | p2 = SAVED_WINDOW_N (sw2, i); | |
7150 | ||
7151 | /* Verify that the current windows in the two | |
7152 | configurations correspond to each other. */ | |
7153 | w1_is_current = EQ (d1->current_window, p1->window); | |
7154 | w2_is_current = EQ (d2->current_window, p2->window); | |
7155 | ||
7156 | if (w1_is_current != w2_is_current) | |
7157 | return 0; | |
7158 | ||
7159 | /* Verify that the corresponding windows do match. */ | |
7160 | if (! EQ (p1->buffer, p2->buffer)) | |
7161 | return 0; | |
949cf20f | 7162 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7163 | return 0; |
949cf20f | 7164 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7165 | return 0; |
949cf20f | 7166 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7167 | return 0; |
949cf20f | 7168 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7169 | return 0; |
cbff28e8 RS |
7170 | if (! EQ (p1->display_table, p2->display_table)) |
7171 | return 0; | |
7172 | if (! EQ (p1->parent, p2->parent)) | |
7173 | return 0; | |
7174 | if (! EQ (p1->prev, p2->prev)) | |
7175 | return 0; | |
2f8274be RS |
7176 | if (! ignore_positions) |
7177 | { | |
7178 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7179 | return 0; | |
ea68264b GM |
7180 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7181 | return 0; | |
2f8274be RS |
7182 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7183 | return 0; | |
7184 | if (NILP (Fequal (p1->start, p2->start))) | |
7185 | return 0; | |
7186 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7187 | return 0; | |
7188 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7189 | return 0; | |
7190 | } | |
949cf20f KS |
7191 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7192 | return 0; | |
7193 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7194 | return 0; | |
7195 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7196 | return 0; | |
7197 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7198 | return 0; | |
7199 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7200 | return 0; | |
7201 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7202 | return 0; | |
7203 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7204 | return 0; | |
cbff28e8 RS |
7205 | } |
7206 | ||
7207 | return 1; | |
7208 | } | |
2f8274be RS |
7209 | |
7210 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7211 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7212 | doc: /* Compare two window configurations as regards the structure of windows. |
7213 | This function ignores details such as the values of point and mark | |
7214 | and scrolling positions. */) | |
7215 | (x, y) | |
2f8274be RS |
7216 | Lisp_Object x, y; |
7217 | { | |
7218 | if (compare_window_configurations (x, y, 1)) | |
7219 | return Qt; | |
7220 | return Qnil; | |
7221 | } | |
cbff28e8 | 7222 | \f |
dfcf069d | 7223 | void |
7ab12479 JB |
7224 | init_window_once () |
7225 | { | |
3224dac1 | 7226 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7227 | XSETFRAME (selected_frame, f); |
7228 | Vterminal_frame = selected_frame; | |
7229 | minibuf_window = f->minibuffer_window; | |
7230 | selected_window = f->selected_window; | |
7231 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7232 | |
7233 | window_initialized = 1; | |
7ab12479 JB |
7234 | } |
7235 | ||
67492200 GM |
7236 | void |
7237 | init_window () | |
7238 | { | |
7239 | Vwindow_list = Qnil; | |
7240 | } | |
7241 | ||
dfcf069d | 7242 | void |
7ab12479 JB |
7243 | syms_of_window () |
7244 | { | |
d67b4f80 | 7245 | Qscroll_up = intern_c_string ("scroll-up"); |
c525d842 CY |
7246 | staticpro (&Qscroll_up); |
7247 | ||
d67b4f80 | 7248 | Qscroll_down = intern_c_string ("scroll-down"); |
c525d842 CY |
7249 | staticpro (&Qscroll_down); |
7250 | ||
a4b000fb JL |
7251 | Qscroll_command = intern_c_string ("scroll-command"); |
7252 | staticpro (&Qscroll_command); | |
7253 | ||
7254 | Fput (Qscroll_up, Qscroll_command, Qt); | |
7255 | Fput (Qscroll_down, Qscroll_command, Qt); | |
7256 | ||
d67b4f80 | 7257 | Qwindow_size_fixed = intern_c_string ("window-size-fixed"); |
8a37516b | 7258 | staticpro (&Qwindow_size_fixed); |
c0e7ccd3 | 7259 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7260 | |
543f5fb1 RS |
7261 | staticpro (&Qwindow_configuration_change_hook); |
7262 | Qwindow_configuration_change_hook | |
d67b4f80 | 7263 | = intern_c_string ("window-configuration-change-hook"); |
543f5fb1 | 7264 | |
d67b4f80 | 7265 | Qwindowp = intern_c_string ("windowp"); |
7ab12479 JB |
7266 | staticpro (&Qwindowp); |
7267 | ||
d67b4f80 | 7268 | Qwindow_configuration_p = intern_c_string ("window-configuration-p"); |
3f8ab7bd RS |
7269 | staticpro (&Qwindow_configuration_p); |
7270 | ||
d67b4f80 | 7271 | Qwindow_live_p = intern_c_string ("window-live-p"); |
806b4d9b | 7272 | staticpro (&Qwindow_live_p); |
605be8af | 7273 | |
d67b4f80 | 7274 | Qdisplay_buffer = intern_c_string ("display-buffer"); |
87478b52 SM |
7275 | staticpro (&Qdisplay_buffer); |
7276 | ||
d67b4f80 | 7277 | Qtemp_buffer_show_hook = intern_c_string ("temp-buffer-show-hook"); |
a58ec57d RS |
7278 | staticpro (&Qtemp_buffer_show_hook); |
7279 | ||
67492200 | 7280 | staticpro (&Vwindow_list); |
8bfb170b KS |
7281 | |
7282 | minibuf_selected_window = Qnil; | |
3dbab091 | 7283 | staticpro (&minibuf_selected_window); |
67492200 | 7284 | |
c876b227 | 7285 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7286 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7287 | window_scroll_preserve_hpos = -1; |
7288 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7289 | |
7ab12479 | 7290 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7291 | doc: /* Non-nil means call as function to display a help buffer. |
7292 | The function is called with one argument, the buffer to be displayed. | |
7293 | Used by `with-output-to-temp-buffer'. | |
7294 | If this function is used, then it must do the entire job of showing | |
7295 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7296 | Vtemp_buffer_show_function = Qnil; |
7297 | ||
7ab12479 | 7298 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7299 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7300 | Vminibuf_scroll_window = Qnil; |
7301 | ||
cc91894c | 7302 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7303 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7304 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7305 | is displayed in the `mode-line' face. */); | |
7306 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7307 | |
7ab12479 | 7308 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7309 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7310 | Vother_window_scroll_buffer = Qnil; |
7311 | ||
e56263e5 KS |
7312 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7313 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7314 | auto_window_vscroll_p = 1; | |
7315 | ||
7ab12479 | 7316 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, |
fdb82f93 | 7317 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7318 | next_screen_context_lines = 2; |
7319 | ||
7ab12479 | 7320 | DEFVAR_INT ("window-min-height", &window_min_height, |
047aaeb9 MR |
7321 | doc: /* Allow deleting windows less than this tall. |
7322 | The value is measured in line units. If a window wants a modeline it | |
7323 | is counted as one line. | |
7324 | ||
7325 | Emacs honors settings of this variable when enlarging or shrinking | |
7326 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7327 | window_min_height = 4; |
7328 | ||
7329 | DEFVAR_INT ("window-min-width", &window_min_width, | |
047aaeb9 MR |
7330 | doc: /* Allow deleting windows less than this wide. |
7331 | The value is measured in characters and includes any fringes or | |
7332 | the scrollbar. | |
7333 | ||
7334 | Emacs honors settings of this variable when enlarging or shrinking | |
7335 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7336 | window_min_width = 10; |
7337 | ||
5500c422 GM |
7338 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7339 | &Vscroll_preserve_screen_position, | |
c876b227 | 7340 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7341 | A value of nil means point does not keep its screen position except |
7342 | at the scroll margin or window boundary respectively. | |
7343 | A value of t means point keeps its screen position if the scroll | |
7344 | command moved it vertically out of the window, e.g. when scrolling | |
7345 | by full screens. | |
9013a7f8 | 7346 | Any other value means point always keeps its screen position. |
a4b000fb JL |
7347 | Scroll commands should have the `scroll-command' property |
7348 | on their symbols to be controlled by this variable. */); | |
5500c422 | 7349 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7350 | |
a1562258 SM |
7351 | DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type, |
7352 | doc: /* Type of marker to use for `window-point'. */); | |
7353 | Vwindow_point_insertion_type = Qnil; | |
7354 | ||
543f5fb1 RS |
7355 | DEFVAR_LISP ("window-configuration-change-hook", |
7356 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7357 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7358 | The buffer-local part is run once per window, with the relevant window |
7359 | selected; while the global part is run only once for the modified frame, | |
7360 | with the relevant frame selected. */); | |
543f5fb1 RS |
7361 | Vwindow_configuration_change_hook = Qnil; |
7362 | ||
666e158e MB |
7363 | DEFVAR_LISP ("recenter-redisplay", &Vrecenter_redisplay, |
7364 | doc: /* If non-nil, then the `recenter' command with a nil argument | |
6e6e5760 | 7365 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
7366 | frame to be redrawn only if it is a tty frame. */); |
7367 | Vrecenter_redisplay = Qtty; | |
7368 | ||
7369 | ||
7ab12479 JB |
7370 | defsubr (&Sselected_window); |
7371 | defsubr (&Sminibuffer_window); | |
7372 | defsubr (&Swindow_minibuffer_p); | |
7373 | defsubr (&Swindowp); | |
806b4d9b | 7374 | defsubr (&Swindow_live_p); |
7ab12479 | 7375 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7376 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7377 | defsubr (&Swindow_buffer); |
7378 | defsubr (&Swindow_height); | |
7379 | defsubr (&Swindow_width); | |
35ea56c9 | 7380 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7381 | defsubr (&Swindow_hscroll); |
7382 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7383 | defsubr (&Swindow_redisplay_end_trigger); |
7384 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7385 | defsubr (&Swindow_edges); |
c99a9eb3 | 7386 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 7387 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
7388 | defsubr (&Swindow_inside_edges); |
7389 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 7390 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
7391 | defsubr (&Scoordinates_in_window_p); |
7392 | defsubr (&Swindow_at); | |
7ab12479 JB |
7393 | defsubr (&Swindow_point); |
7394 | defsubr (&Swindow_start); | |
7395 | defsubr (&Swindow_end); | |
7396 | defsubr (&Sset_window_point); | |
7397 | defsubr (&Sset_window_start); | |
7398 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7399 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7400 | defsubr (&Swindow_display_table); |
7401 | defsubr (&Sset_window_display_table); | |
7402 | defsubr (&Snext_window); | |
7403 | defsubr (&Sprevious_window); | |
7404 | defsubr (&Sother_window); | |
7405 | defsubr (&Sget_lru_window); | |
7406 | defsubr (&Sget_largest_window); | |
7407 | defsubr (&Sget_buffer_window); | |
7408 | defsubr (&Sdelete_other_windows); | |
7409 | defsubr (&Sdelete_windows_on); | |
7410 | defsubr (&Sreplace_buffer_in_windows); | |
7411 | defsubr (&Sdelete_window); | |
7412 | defsubr (&Sset_window_buffer); | |
7413 | defsubr (&Sselect_window); | |
6b61353c | 7414 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7415 | defsubr (&Ssplit_window); |
7416 | defsubr (&Senlarge_window); | |
7417 | defsubr (&Sshrink_window); | |
0d384044 | 7418 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7419 | defsubr (&Sscroll_up); |
7420 | defsubr (&Sscroll_down); | |
7421 | defsubr (&Sscroll_left); | |
7422 | defsubr (&Sscroll_right); | |
ccd0664b | 7423 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7424 | defsubr (&Sscroll_other_window); |
fa832261 | 7425 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7426 | defsubr (&Srecenter); |
81fe0836 | 7427 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7428 | defsubr (&Smove_to_window_line); |
7429 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7430 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7431 | defsubr (&Sset_window_configuration); |
7432 | defsubr (&Scurrent_window_configuration); | |
7433 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7434 | defsubr (&Swindow_tree); |
5500c422 GM |
7435 | defsubr (&Sset_window_margins); |
7436 | defsubr (&Swindow_margins); | |
949cf20f KS |
7437 | defsubr (&Sset_window_fringes); |
7438 | defsubr (&Swindow_fringes); | |
7439 | defsubr (&Sset_window_scroll_bars); | |
7440 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7441 | defsubr (&Swindow_vscroll); |
7442 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7443 | defsubr (&Scompare_window_configurations); |
67492200 | 7444 | defsubr (&Swindow_list); |
cfbb2395 JB |
7445 | defsubr (&Swindow_parameters); |
7446 | defsubr (&Swindow_parameter); | |
7447 | defsubr (&Sset_window_parameter); | |
7448 | ||
7ab12479 JB |
7449 | } |
7450 | ||
dfcf069d | 7451 | void |
7ab12479 JB |
7452 | keys_of_window () |
7453 | { | |
7454 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7455 | initial_define_key (control_x_map, '2', "split-window"); | |
7456 | initial_define_key (control_x_map, '0', "delete-window"); | |
7457 | initial_define_key (control_x_map, 'o', "other-window"); | |
7458 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7459 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7460 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7461 | ||
32129746 | 7462 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 7463 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 7464 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 7465 | } |
6b61353c KH |
7466 | |
7467 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7468 | (do not change this comment) */ |