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 | |
3f8ab7bd | 54 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
87478b52 | 55 | Lisp_Object Qdisplay_buffer; |
a4b000fb | 56 | Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
90647b07 | 57 | Lisp_Object Qwindow_size_fixed; |
87478b52 | 58 | |
f57e2426 J |
59 | static int displayed_window_lines (struct window *); |
60 | static struct window *decode_window (Lisp_Object); | |
61 | static int count_windows (struct window *); | |
62 | static int get_leaf_windows (struct window *, struct window **, int); | |
63 | static void window_scroll (Lisp_Object, int, int, int); | |
64 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); | |
65 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
66 | static int window_min_size_1 (struct window *, int, int); | |
67 | static int window_min_size_2 (struct window *, int, int); | |
68 | static int window_min_size (struct window *, int, int, int, int *); | |
69 | static void size_window (Lisp_Object, int, int, int, int, int); | |
70 | static int freeze_window_start (struct window *, void *); | |
71 | static int window_fixed_size_p (struct window *, int, int); | |
72 | static void enlarge_window (Lisp_Object, int, int); | |
73 | static Lisp_Object window_list (void); | |
74 | static int add_window_to_list (struct window *, void *); | |
75 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
76 | Lisp_Object); | |
77 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
78 | Lisp_Object, int); | |
79 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
80 | Lisp_Object *); | |
81 | static int foreach_window_1 (struct window *, | |
82 | int (* fn) (struct window *, void *), | |
83 | void *); | |
84 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
b7354ddf | 85 | |
7ab12479 JB |
86 | /* This is the window in which the terminal's cursor should |
87 | be left when nothing is being done with it. This must | |
88 | always be a leaf window, and its buffer is selected by | |
89 | the top level editing loop at the end of each command. | |
90 | ||
91 | This value is always the same as | |
44fa5b1e | 92 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
93 | |
94 | Lisp_Object selected_window; | |
95 | ||
67492200 GM |
96 | /* A list of all windows for use by next_window and Fwindow_list. |
97 | Functions creating or deleting windows should invalidate this cache | |
98 | by setting it to nil. */ | |
99 | ||
100 | Lisp_Object Vwindow_list; | |
101 | ||
5500c422 GM |
102 | /* The mini-buffer window of the selected frame. |
103 | Note that you cannot test for mini-bufferness of an arbitrary window | |
104 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 105 | the selected window. */ |
5500c422 | 106 | |
7ab12479 JB |
107 | Lisp_Object minibuf_window; |
108 | ||
3f49fddc KS |
109 | /* Non-nil means it is the window whose mode line should be |
110 | shown as the selected window when the minibuffer is selected. */ | |
111 | ||
3dbab091 | 112 | Lisp_Object minibuf_selected_window; |
3f49fddc | 113 | |
7ab12479 | 114 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
115 | when the mini-buffer is selected. */ |
116 | ||
7ab12479 JB |
117 | Lisp_Object Vminibuf_scroll_window; |
118 | ||
119 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 120 | |
7ab12479 JB |
121 | Lisp_Object Vother_window_scroll_buffer; |
122 | ||
7ab12479 | 123 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 124 | |
7ab12479 JB |
125 | Lisp_Object Vtemp_buffer_show_function; |
126 | ||
e56263e5 KS |
127 | /* Non-zero means line and page scrolling on tall lines (with images) |
128 | does partial scrolling by modifying window-vscroll. */ | |
129 | ||
130 | int auto_window_vscroll_p; | |
131 | ||
cc91894c KS |
132 | /* Non-zero means to use mode-line-inactive face in all windows but the |
133 | selected-window and the minibuffer-scroll-window when the | |
134 | minibuffer is active. */ | |
135 | int mode_line_in_non_selected_windows; | |
26124d5e | 136 | |
7ab12479 | 137 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 138 | |
31ade731 SM |
139 | EMACS_INT window_min_height; |
140 | EMACS_INT window_min_width; | |
7ab12479 | 141 | |
a58ec57d | 142 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 143 | |
a58ec57d RS |
144 | Lisp_Object Qtemp_buffer_show_hook; |
145 | ||
7ab12479 | 146 | /* Number of lines of continuity in scrolling by screenfuls. */ |
5500c422 | 147 | |
31ade731 | 148 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
149 | |
150 | /* Incremented for each window created. */ | |
5500c422 | 151 | |
7ab12479 JB |
152 | static int sequence_number; |
153 | ||
5b03d3c0 | 154 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 155 | |
5b03d3c0 RS |
156 | static int window_initialized; |
157 | ||
543f5fb1 | 158 | /* Hook to run when window config changes. */ |
5500c422 | 159 | |
eeca6f6f SM |
160 | static Lisp_Object Qwindow_configuration_change_hook; |
161 | static Lisp_Object Vwindow_configuration_change_hook; | |
543f5fb1 | 162 | |
d0c38d63 | 163 | /* Non-nil means scroll commands try to put point |
9317a85d | 164 | at the same screen height as previously. */ |
9317a85d | 165 | |
5500c422 GM |
166 | Lisp_Object Vscroll_preserve_screen_position; |
167 | ||
a1562258 SM |
168 | /* Non-nil means that text is inserted before window's markers. */ |
169 | ||
170 | Lisp_Object Vwindow_point_insertion_type; | |
171 | ||
0d384044 RS |
172 | /* Incremented by 1 whenever a window is deleted. */ |
173 | ||
174 | int window_deletion_count; | |
175 | ||
66d43aea LT |
176 | /* Used by the function window_scroll_pixel_based */ |
177 | ||
c876b227 | 178 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 179 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 180 | |
c876b227 SM |
181 | /* Same for window_scroll_line_based. */ |
182 | ||
183 | static int window_scroll_preserve_hpos; | |
184 | static int window_scroll_preserve_vpos; | |
185 | ||
5500c422 | 186 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 187 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 188 | static int inhibit_frame_unsplittable; |
5500c422 | 189 | #endif /* 0 */ |
7d601aaa | 190 | |
666e158e MB |
191 | /* If non-nil, then the `recenter' command with a nil argument |
192 | the entire frame to be redrawn; the special value `tty' causes the | |
193 | frame to be redrawn only if it is a tty frame. */ | |
194 | ||
195 | static Lisp_Object Vrecenter_redisplay; | |
666e158e | 196 | |
7ab12479 JB |
197 | \f |
198 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
23fe745a | 199 | doc: /* Return t if OBJECT is a window. */) |
5842a27b | 200 | (Lisp_Object object) |
7ab12479 | 201 | { |
413430c5 | 202 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
203 | } |
204 | ||
806b4d9b | 205 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
23fe745a | 206 | doc: /* Return t if OBJECT is a window which is currently visible. */) |
5842a27b | 207 | (Lisp_Object object) |
605be8af | 208 | { |
9e571f49 | 209 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
210 | } |
211 | ||
7ab12479 | 212 | Lisp_Object |
971de7fb | 213 | make_window (void) |
7ab12479 | 214 | { |
cffec418 | 215 | Lisp_Object val; |
7ab12479 | 216 | register struct window *p; |
cffec418 | 217 | |
26605be9 | 218 | p = allocate_window (); |
2a1893f4 SM |
219 | ++sequence_number; |
220 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
221 | XSETFASTINT (p->left_col, 0); |
222 | XSETFASTINT (p->top_line, 0); | |
223 | XSETFASTINT (p->total_lines, 0); | |
224 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 225 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 226 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 227 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
228 | p->start = Fmake_marker (); |
229 | p->pointm = Fmake_marker (); | |
d834a2e9 | 230 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 231 | p->frame = Qnil; |
7ab12479 JB |
232 | p->display_table = Qnil; |
233 | p->dedicated = Qnil; | |
cfbb2395 | 234 | p->window_parameters = Qnil; |
5500c422 | 235 | p->pseudo_window_p = 0; |
72af86bd AS |
236 | memset (&p->cursor, 0, sizeof (p->cursor)); |
237 | memset (&p->last_cursor, 0, sizeof (p->last_cursor)); | |
238 | memset (&p->phys_cursor, 0, sizeof (p->phys_cursor)); | |
5500c422 | 239 | p->desired_matrix = p->current_matrix = 0; |
7a146de2 | 240 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 241 | p->phys_cursor_type = -1; |
4b26579e | 242 | p->phys_cursor_width = -1; |
5500c422 GM |
243 | p->must_be_updated_p = 0; |
244 | XSETFASTINT (p->window_end_vpos, 0); | |
245 | XSETFASTINT (p->window_end_pos, 0); | |
246 | p->window_end_valid = Qnil; | |
247 | p->vscroll = 0; | |
cffec418 | 248 | XSETWINDOW (val, p); |
5500c422 | 249 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 250 | p->frozen_window_start_p = 0; |
6b448755 | 251 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
252 | p->left_margin_cols = Qnil; |
253 | p->right_margin_cols = Qnil; | |
254 | p->left_fringe_width = Qnil; | |
255 | p->right_fringe_width = Qnil; | |
256 | p->fringes_outside_margins = Qnil; | |
257 | p->scroll_bar_width = Qnil; | |
258 | p->vertical_scroll_bar_type = Qt; | |
047aaeb9 | 259 | p->resize_proportionally = Qnil; |
67492200 GM |
260 | |
261 | Vwindow_list = Qnil; | |
7ab12479 JB |
262 | return val; |
263 | } | |
264 | ||
265 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 | 266 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
5842a27b | 267 | (void) |
7ab12479 JB |
268 | { |
269 | return selected_window; | |
270 | } | |
271 | ||
83762ba4 | 272 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
273 | doc: /* Return the window used now for minibuffers. |
274 | If the optional argument FRAME is specified, return the minibuffer window | |
275 | used by that frame. */) | |
5842a27b | 276 | (Lisp_Object frame) |
7ab12479 | 277 | { |
83762ba4 | 278 | if (NILP (frame)) |
1ae1a37d | 279 | frame = selected_frame; |
b7826503 | 280 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 281 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
282 | } |
283 | ||
605be8af | 284 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
23fe745a | 285 | doc: /* Return non-nil if WINDOW is a minibuffer window. |
6b61353c | 286 | WINDOW defaults to the selected window. */) |
5842a27b | 287 | (Lisp_Object window) |
7ab12479 JB |
288 | { |
289 | struct window *w = decode_window (window); | |
53bb6b99 | 290 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
291 | } |
292 | ||
293 | ||
7ab12479 | 294 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 295 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 296 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
297 | Return nil if that position is scrolled vertically out of view. |
298 | If a character is only partially visible, nil is returned, unless the | |
299 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 300 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 301 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
302 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
303 | ||
304 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
305 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
306 | where X and Y are the pixel coordinates relative to the top left corner | |
307 | of the window. The remaining elements are omitted if the character after | |
308 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 309 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 310 | display row, and VPOS is the row number (0-based) containing POS. */) |
5842a27b | 311 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
7ab12479 JB |
312 | { |
313 | register struct window *w; | |
2452438f | 314 | register EMACS_INT posint; |
7ab12479 | 315 | register struct buffer *buf; |
9a132b1f | 316 | struct text_pos top; |
0cc1039f | 317 | Lisp_Object in_window = Qnil; |
5a857365 | 318 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 319 | int x, y; |
7ab12479 | 320 | |
f28b75a9 MB |
321 | w = decode_window (window); |
322 | buf = XBUFFER (w->buffer); | |
323 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
324 | ||
120b7781 KS |
325 | if (EQ (pos, Qt)) |
326 | posint = -1; | |
327 | else if (!NILP (pos)) | |
7ab12479 | 328 | { |
b7826503 | 329 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
330 | posint = XINT (pos); |
331 | } | |
f28b75a9 MB |
332 | else if (w == XWINDOW (selected_window)) |
333 | posint = PT; | |
334 | else | |
335 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 336 | |
0cc1039f KS |
337 | /* If position is above window start or outside buffer boundaries, |
338 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
339 | if ((EQ (pos, Qt) |
340 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
341 | && CHARPOS (top) >= BUF_BEGV (buf) |
342 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 343 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 344 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
345 | in_window = Qt; |
346 | ||
347 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
348 | { |
349 | Lisp_Object part = Qnil; | |
350 | if (!fully_p) | |
351 | part = list4 (make_number (rtop), make_number (rbot), | |
352 | make_number (rowh), make_number (vpos)); | |
353 | in_window = Fcons (make_number (x), | |
354 | Fcons (make_number (y), part)); | |
355 | } | |
356 | ||
9a132b1f | 357 | return in_window; |
7ab12479 | 358 | } |
53bb6b99 | 359 | |
536833ab | 360 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 361 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
362 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
363 | If WINDOW is nil or omitted, use selected window. | |
364 | ||
7bbc67d2 KS |
365 | Return height of current line if LINE is omitted or nil. Return height of |
366 | header or mode line if LINE is `header-line' and `mode-line'. | |
367 | Otherwise, LINE is a text line number starting from 0. A negative number | |
368 | counts from the end of the window. | |
536833ab | 369 | |
7bbc67d2 | 370 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 371 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 372 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 373 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
374 | the bottom of the text line. If there are off-window pixels at the top |
375 | of the (first) text line, YPOS is negative. | |
536833ab KS |
376 | |
377 | Return nil if window display is not up-to-date. In that case, use | |
378 | `pos-visible-in-window-p' to obtain the information. */) | |
5842a27b | 379 | (Lisp_Object line, Lisp_Object window) |
b3a10345 KS |
380 | { |
381 | register struct window *w; | |
382 | register struct buffer *b; | |
383 | struct glyph_row *row, *end_row; | |
536833ab | 384 | int max_y, crop, i, n; |
b3a10345 KS |
385 | |
386 | w = decode_window (window); | |
387 | ||
388 | if (noninteractive | |
b3a10345 | 389 | || w->pseudo_window_p) |
7bbc67d2 | 390 | return Qnil; |
b3a10345 KS |
391 | |
392 | CHECK_BUFFER (w->buffer); | |
393 | b = XBUFFER (w->buffer); | |
394 | ||
395 | /* Fail if current matrix is not up-to-date. */ | |
396 | if (NILP (w->window_end_valid) | |
397 | || current_buffer->clip_changed | |
398 | || current_buffer->prevent_redisplay_optimizations_p | |
399 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
400 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
401 | return Qnil; | |
402 | ||
7bbc67d2 KS |
403 | if (NILP (line)) |
404 | { | |
405 | i = w->cursor.vpos; | |
406 | if (i < 0 || i >= w->current_matrix->nrows | |
407 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
408 | return Qnil; | |
409 | max_y = window_text_bottom_y (w); | |
410 | goto found_row; | |
411 | } | |
412 | ||
536833ab | 413 | if (EQ (line, Qheader_line)) |
b3a10345 | 414 | { |
536833ab KS |
415 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
416 | return Qnil; | |
417 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
418 | if (!row->enabled_p) |
419 | return Qnil; | |
536833ab KS |
420 | return list4 (make_number (row->height), |
421 | make_number (0), make_number (0), | |
422 | make_number (0)); | |
b3a10345 | 423 | } |
536833ab KS |
424 | |
425 | if (EQ (line, Qmode_line)) | |
b3a10345 | 426 | { |
536833ab KS |
427 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
428 | if (!row->enabled_p) | |
429 | return Qnil; | |
430 | return list4 (make_number (row->height), | |
431 | make_number (0), /* not accurate */ | |
432 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
433 | + window_text_bottom_y (w)), | |
434 | make_number (0)); | |
435 | } | |
b3a10345 | 436 | |
536833ab | 437 | CHECK_NUMBER (line); |
7bbc67d2 | 438 | n = XINT (line); |
536833ab KS |
439 | |
440 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
441 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
442 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 443 | i = 0; |
536833ab KS |
444 | |
445 | while ((n < 0 || i < n) | |
446 | && row <= end_row && row->enabled_p | |
447 | && row->y + row->height < max_y) | |
448 | row++, i++; | |
b3a10345 | 449 | |
536833ab KS |
450 | if (row > end_row || !row->enabled_p) |
451 | return Qnil; | |
452 | ||
7bbc67d2 | 453 | if (++n < 0) |
536833ab KS |
454 | { |
455 | if (-n > i) | |
456 | return Qnil; | |
7bbc67d2 KS |
457 | row += n; |
458 | i += n; | |
b3a10345 KS |
459 | } |
460 | ||
7bbc67d2 | 461 | found_row: |
536833ab KS |
462 | crop = max (0, (row->y + row->height) - max_y); |
463 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 464 | make_number (i), |
536833ab KS |
465 | make_number (row->y), |
466 | make_number (crop)); | |
b3a10345 KS |
467 | } |
468 | ||
536833ab | 469 | |
7ab12479 JB |
470 | \f |
471 | static struct window * | |
971de7fb | 472 | decode_window (register Lisp_Object window) |
7ab12479 | 473 | { |
265a9e55 | 474 | if (NILP (window)) |
7ab12479 JB |
475 | return XWINDOW (selected_window); |
476 | ||
b7826503 | 477 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
478 | return XWINDOW (window); |
479 | } | |
480 | ||
6b61353c | 481 | static struct window * |
971de7fb | 482 | decode_any_window (register Lisp_Object window) |
6b61353c KH |
483 | { |
484 | if (NILP (window)) | |
485 | return XWINDOW (selected_window); | |
486 | ||
487 | CHECK_WINDOW (window); | |
488 | return XWINDOW (window); | |
489 | } | |
490 | ||
7ab12479 | 491 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
492 | doc: /* Return the buffer that WINDOW is displaying. |
493 | WINDOW defaults to the selected window. */) | |
5842a27b | 494 | (Lisp_Object window) |
7ab12479 JB |
495 | { |
496 | return decode_window (window)->buffer; | |
497 | } | |
498 | ||
499 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
8fef9de1 MR |
500 | doc: /* Return the number of lines in WINDOW. |
501 | WINDOW defaults to the selected window. | |
502 | ||
a77cfeaf CS |
503 | The return value includes WINDOW's mode line and header line, if any. |
504 | ||
505 | Note: The function does not take into account the value of `line-spacing' | |
506 | when calculating the number of lines in WINDOW. */) | |
5842a27b | 507 | (Lisp_Object window) |
7ab12479 | 508 | { |
6b61353c | 509 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
510 | } |
511 | ||
512 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 | 513 | doc: /* Return the number of display columns in WINDOW. |
d653c8cc MR |
514 | WINDOW defaults to the selected window. |
515 | ||
516 | Note: The return value is the number of columns available for text in | |
517 | WINDOW. If you want to find out how many columns WINDOW takes up, use | |
518 | (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
5842a27b | 519 | (Lisp_Object window) |
7ab12479 | 520 | { |
6b61353c | 521 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
522 | } |
523 | ||
35ea56c9 MR |
524 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
525 | doc: /* Return t if WINDOW is as wide as its frame. | |
526 | WINDOW defaults to the selected window. */) | |
5842a27b | 527 | (Lisp_Object window) |
35ea56c9 MR |
528 | { |
529 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
530 | } | |
531 | ||
7ab12479 | 532 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
533 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
534 | WINDOW defaults to the selected window. */) | |
5842a27b | 535 | (Lisp_Object window) |
7ab12479 JB |
536 | { |
537 | return decode_window (window)->hscroll; | |
538 | } | |
539 | ||
540 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 541 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 542 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
543 | |
544 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 545 | window so that the location of point moves off-window. */) |
5842a27b | 546 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 547 | { |
ea68264b GM |
548 | struct window *w = decode_window (window); |
549 | int hscroll; | |
7ab12479 | 550 | |
b7826503 | 551 | CHECK_NUMBER (ncol); |
ea68264b | 552 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 553 | |
ea68264b GM |
554 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
555 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 556 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 557 | |
c67fa410 | 558 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
559 | return ncol; |
560 | } | |
561 | ||
190eb263 RS |
562 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
563 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 564 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 565 | WINDOW defaults to the selected window. |
fdb82f93 | 566 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 567 | (Lisp_Object window) |
190eb263 RS |
568 | { |
569 | return decode_window (window)->redisplay_end_trigger; | |
570 | } | |
571 | ||
572 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
573 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
574 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
575 | VALUE should be a buffer position (typically a marker) or nil. | |
576 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
577 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
578 | with two arguments: WINDOW, and the end trigger value. | |
579 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 580 | (register Lisp_Object window, Lisp_Object value) |
190eb263 RS |
581 | { |
582 | register struct window *w; | |
583 | ||
584 | w = decode_window (window); | |
585 | w->redisplay_end_trigger = value; | |
586 | return value; | |
587 | } | |
588 | ||
7ab12479 | 589 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 590 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
591 | The list has the form (LEFT TOP RIGHT BOTTOM). |
592 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
593 | all relative to 0, 0 at top left corner of frame. | |
594 | ||
595 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
596 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
597 | The edges include the space used by WINDOW's scroll bar, display | |
598 | margins, fringes, header line, and/or mode line. For the edges of | |
599 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 600 | (Lisp_Object window) |
7ab12479 | 601 | { |
6b61353c | 602 | register struct window *w = decode_any_window (window); |
7ab12479 | 603 | |
949cf20f KS |
604 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
605 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
606 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
607 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
608 | Qnil)))); | |
7ab12479 JB |
609 | } |
610 | ||
c99a9eb3 RS |
611 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
612 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
613 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
614 | the top left corner of the frame. | |
615 | ||
616 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
617 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
618 | The pixel edges include the space used by WINDOW's scroll bar, display | |
619 | margins, fringes, header line, and/or mode line. For the pixel edges | |
620 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 621 | (Lisp_Object window) |
c99a9eb3 | 622 | { |
6b61353c | 623 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
624 | |
625 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
626 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
627 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
628 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
629 | Qnil)))); | |
630 | } | |
631 | ||
9d5405ec J |
632 | static void |
633 | calc_absolute_offset(struct window *w, int *add_x, int *add_y) | |
634 | { | |
635 | struct frame *f = XFRAME (w->frame); | |
636 | *add_y = f->top_pos; | |
637 | #ifdef FRAME_MENUBAR_HEIGHT | |
638 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
639 | #endif | |
bfeabdc3 JD |
640 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
641 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
642 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
643 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
644 | #endif | |
645 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
646 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
647 | #endif | |
648 | *add_x = f->left_pos; | |
bfeabdc3 JD |
649 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
650 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
651 | #endif | |
9d5405ec J |
652 | } |
653 | ||
654 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
655 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
656 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
657 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
658 | the top left corner of the display. | |
659 | ||
660 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
661 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
662 | The pixel edges include the space used by WINDOW's scroll bar, display | |
663 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 664 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 665 | (Lisp_Object window) |
9d5405ec J |
666 | { |
667 | register struct window *w = decode_any_window (window); | |
668 | int add_x, add_y; | |
ed3751c8 | 669 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
670 | |
671 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
672 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
673 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
674 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
675 | Qnil)))); | |
676 | } | |
677 | ||
c99a9eb3 RS |
678 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
679 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
680 | The list has the form (LEFT TOP RIGHT BOTTOM). |
681 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
682 | all relative to 0, 0 at top left corner of frame. | |
683 | ||
684 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
685 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
686 | The inside edges do not include the space used by the WINDOW's scroll | |
687 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 688 | (Lisp_Object window) |
c99a9eb3 | 689 | { |
6b61353c | 690 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
691 | |
692 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
693 | + WINDOW_LEFT_MARGIN_COLS (w) | |
694 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
695 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
696 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 697 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
698 | - WINDOW_RIGHT_MARGIN_COLS (w) |
699 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
700 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
701 | - WINDOW_MODE_LINE_LINES (w))); | |
702 | } | |
703 | ||
704 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 705 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
b35ac83e CY |
706 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
707 | the top left corner of the frame. | |
708 | ||
709 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
710 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
711 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 712 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 713 | (Lisp_Object window) |
c99a9eb3 | 714 | { |
6b61353c | 715 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
716 | |
717 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
718 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
719 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
720 | make_number (WINDOW_TOP_EDGE_Y (w) | |
721 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 722 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
723 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
724 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
725 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
726 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
727 | } | |
728 | ||
9d5405ec J |
729 | DEFUN ("window-inside-absolute-pixel-edges", |
730 | Fwindow_inside_absolute_pixel_edges, | |
731 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
732 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
733 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
734 | the top left corner of the display. | |
735 | ||
736 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
737 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
738 | The inside edges do not include the space used by WINDOW's scroll bar, | |
739 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 740 | (Lisp_Object window) |
9d5405ec J |
741 | { |
742 | register struct window *w = decode_any_window (window); | |
743 | int add_x, add_y; | |
ed3751c8 | 744 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
745 | |
746 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
747 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
748 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
749 | make_number (WINDOW_TOP_EDGE_Y (w) | |
750 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
751 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
752 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
753 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
754 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
755 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
756 | } | |
757 | ||
9173a8fb | 758 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 759 | If it is not, return ON_NOTHING; |
9173a8fb | 760 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 761 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 762 | if it is on the border between the window and its right sibling, |
341f3858 | 763 | return ON_VERTICAL_BORDER. |
9173a8fb | 764 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 765 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 766 | if it is in left or right fringe of the window, |
9173a8fb | 767 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 768 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 769 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
770 | |
771 | X and Y are frame relative pixel coordinates. */ | |
772 | ||
7442878f | 773 | static enum window_part |
9173a8fb | 774 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 775 | { |
b0228ace | 776 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
9173a8fb | 777 | int left_x, right_x; |
7442878f | 778 | enum window_part part; |
949cf20f KS |
779 | int ux = FRAME_COLUMN_WIDTH (f); |
780 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
781 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
782 | /* The width of the area where the vertical line can be dragged. |
783 | (Between mode lines for instance. */ | |
784 | int grabbable_width = ux; | |
949cf20f | 785 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb CY |
786 | int top_y = WINDOW_TOP_EDGE_Y (w); |
787 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
788 | ||
789 | /* Outside any interesting row? */ | |
790 | if (y < top_y || y >= bottom_y) | |
791 | return ON_NOTHING; | |
b0228ace | 792 | |
466539bc EZ |
793 | /* In what's below, we subtract 1 when computing right_x because we |
794 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
795 | if (w->pseudo_window_p) |
796 | { | |
797 | left_x = 0; | |
949cf20f | 798 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
799 | } |
800 | else | |
801 | { | |
949cf20f KS |
802 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
803 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 804 | } |
37962e60 | 805 | |
1cb794ba GM |
806 | /* On the mode line or header line? If it's near the start of |
807 | the mode or header line of window that's has a horizontal | |
808 | sibling, say it's on the vertical line. That's to be able | |
809 | to resize windows horizontally in case we're using toolkit | |
810 | scroll bars. */ | |
b0228ace | 811 | |
1cb794ba | 812 | if (WINDOW_WANTS_MODELINE_P (w) |
9173a8fb | 813 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 814 | { |
949cf20f KS |
815 | part = ON_MODE_LINE; |
816 | ||
817 | header_vertical_border_check: | |
b0228ace GM |
818 | /* We're somewhere on the mode line. We consider the place |
819 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 820 | as the vertical border. If scroll bars on the left, |
b0228ace | 821 | return the right window. */ |
9173a8fb CY |
822 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
823 | || WINDOW_RIGHTMOST_P (w)) | |
824 | && !WINDOW_LEFTMOST_P (w) | |
825 | && eabs (x - x0) < grabbable_width) | |
826 | return ON_VERTICAL_BORDER; | |
827 | ||
828 | /* Make sure we're not at the rightmost position of a | |
829 | mode-/header-line and there's yet another window on the | |
830 | right. (Bug#1372) */ | |
831 | else if ((WINDOW_RIGHTMOST_P (w) || x < x1) | |
832 | && eabs (x - x1) < grabbable_width) | |
833 | return ON_VERTICAL_BORDER; | |
834 | ||
835 | if (x < x0 || x >= x1) | |
cb639b8f KS |
836 | return ON_NOTHING; |
837 | ||
949cf20f | 838 | return part; |
b0228ace | 839 | } |
949cf20f KS |
840 | |
841 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
9173a8fb | 842 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 843 | { |
949cf20f KS |
844 | part = ON_HEADER_LINE; |
845 | goto header_vertical_border_check; | |
1cb794ba | 846 | } |
949cf20f | 847 | |
9173a8fb | 848 | if (x < x0 || x >= x1) return ON_NOTHING; |
cb639b8f | 849 | |
949cf20f | 850 | /* Outside any interesting column? */ |
9173a8fb CY |
851 | if (x < left_x || x > right_x) |
852 | return ON_SCROLL_BAR; | |
949cf20f KS |
853 | |
854 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
855 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 856 | |
949cf20f KS |
857 | text_left = window_box_left (w, TEXT_AREA); |
858 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
859 | ||
860 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 861 | { |
447e9da0 | 862 | if (!w->pseudo_window_p |
949cf20f | 863 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 864 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
865 | && (eabs (x - right_x) < grabbable_width)) |
866 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 867 | } |
9173a8fb CY |
868 | /* Need to say "x > right_x" rather than >=, since on character |
869 | terminals, the vertical line's x coordinate is right_x. */ | |
870 | else if (!w->pseudo_window_p | |
871 | && !WINDOW_RIGHTMOST_P (w) | |
872 | && x > right_x - ux) | |
873 | return ON_VERTICAL_BORDER; | |
874 | ||
875 | if (x < text_left) | |
949cf20f KS |
876 | { |
877 | if (lmargin_width > 0 | |
878 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
879 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
880 | : (x < left_x + lmargin_width))) | |
881 | return ON_LEFT_MARGIN; | |
882 | ||
949cf20f KS |
883 | return ON_LEFT_FRINGE; |
884 | } | |
885 | ||
9173a8fb | 886 | if (x >= text_right) |
949cf20f KS |
887 | { |
888 | if (rmargin_width > 0 | |
889 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
890 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
891 | : (x >= right_x - rmargin_width))) | |
892 | return ON_RIGHT_MARGIN; | |
893 | ||
949cf20f KS |
894 | return ON_RIGHT_FRINGE; |
895 | } | |
896 | ||
897 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 898 | return ON_TEXT; |
d5783c40 JB |
899 | } |
900 | ||
9173a8fb CY |
901 | /* Take X is the frame-relative pixel x-coordinate, and return the |
902 | x-coordinate relative to part PART of window W. */ | |
903 | int | |
904 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
905 | { | |
906 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
907 | ||
908 | switch (part) | |
909 | { | |
910 | case ON_TEXT: | |
911 | return x - window_box_left (w, TEXT_AREA); | |
912 | ||
913 | case ON_LEFT_FRINGE: | |
914 | return x - left_x; | |
915 | ||
916 | case ON_RIGHT_FRINGE: | |
917 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
918 | ||
919 | case ON_LEFT_MARGIN: | |
920 | return (x - left_x | |
921 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
922 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
923 | ||
924 | case ON_RIGHT_MARGIN: | |
925 | return (x + 1 | |
926 | - ((w->pseudo_window_p) | |
927 | ? WINDOW_TOTAL_WIDTH (w) | |
928 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
929 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
930 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
931 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
932 | } | |
933 | ||
934 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
935 | return 0; | |
936 | } | |
937 | ||
b0228ace | 938 | |
d5783c40 | 939 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
940 | Scoordinates_in_window_p, 2, 2, 0, |
941 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
942 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
943 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 944 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
945 | frame. |
946 | If COORDINATES are in the text portion of WINDOW, | |
947 | the coordinates relative to the window are returned. | |
948 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
949 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
950 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
951 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 952 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
953 | `vertical-line' is returned. |
954 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
955 | or `right-margin' is returned. */) | |
5842a27b | 956 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 957 | { |
5500c422 GM |
958 | struct window *w; |
959 | struct frame *f; | |
d5783c40 | 960 | int x, y; |
5500c422 | 961 | Lisp_Object lx, ly; |
d5783c40 | 962 | |
6b61353c | 963 | CHECK_WINDOW (window); |
5500c422 GM |
964 | w = XWINDOW (window); |
965 | f = XFRAME (w->frame); | |
b7826503 | 966 | CHECK_CONS (coordinates); |
5500c422 GM |
967 | lx = Fcar (coordinates); |
968 | ly = Fcdr (coordinates); | |
b7826503 PJ |
969 | CHECK_NUMBER_OR_FLOAT (lx); |
970 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
971 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
972 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 973 | |
9173a8fb | 974 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 975 | { |
7442878f | 976 | case ON_NOTHING: |
d5783c40 JB |
977 | return Qnil; |
978 | ||
7442878f | 979 | case ON_TEXT: |
9173a8fb CY |
980 | /* Convert X and Y to window relative pixel coordinates, and |
981 | return the canonical char units. */ | |
982 | x -= window_box_left (w, TEXT_AREA); | |
983 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
984 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
985 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 986 | |
7442878f | 987 | case ON_MODE_LINE: |
d5783c40 | 988 | return Qmode_line; |
37962e60 | 989 | |
7442878f | 990 | case ON_VERTICAL_BORDER: |
e5d77022 | 991 | return Qvertical_line; |
d5783c40 | 992 | |
7442878f | 993 | case ON_HEADER_LINE: |
045dee35 | 994 | return Qheader_line; |
5500c422 | 995 | |
7442878f GM |
996 | case ON_LEFT_FRINGE: |
997 | return Qleft_fringe; | |
177c0ea7 | 998 | |
7442878f GM |
999 | case ON_RIGHT_FRINGE: |
1000 | return Qright_fringe; | |
fbad6f9a | 1001 | |
49b996e7 GM |
1002 | case ON_LEFT_MARGIN: |
1003 | return Qleft_margin; | |
177c0ea7 | 1004 | |
49b996e7 GM |
1005 | case ON_RIGHT_MARGIN: |
1006 | return Qright_margin; | |
1007 | ||
6487f669 RS |
1008 | case ON_SCROLL_BAR: |
1009 | /* Historically we are supposed to return nil in this case. */ | |
1010 | return Qnil; | |
1011 | ||
d5783c40 JB |
1012 | default: |
1013 | abort (); | |
1014 | } | |
1015 | } | |
1016 | ||
67492200 GM |
1017 | |
1018 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1019 | Check if window W contains coordinates specified by USER_DATA which |
1020 | is actually a pointer to a struct check_window_data CW. | |
1021 | ||
1022 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1023 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1024 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1025 | zero from this function to stop iterating over windows. */ |
1026 | ||
1027 | struct check_window_data | |
1028 | { | |
1029 | Lisp_Object *window; | |
9173a8fb | 1030 | int x, y; |
341f3858 | 1031 | enum window_part *part; |
f95464e4 | 1032 | }; |
67492200 GM |
1033 | |
1034 | static int | |
971de7fb | 1035 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1036 | { |
f95464e4 | 1037 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1038 | enum window_part found; |
1039 | int continue_p = 1; | |
67492200 | 1040 | |
f95464e4 | 1041 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1042 | if (found != ON_NOTHING) |
67492200 | 1043 | { |
341f3858 | 1044 | *cw->part = found; |
f95464e4 | 1045 | XSETWINDOW (*cw->window, w); |
7442878f | 1046 | continue_p = 0; |
67492200 | 1047 | } |
177c0ea7 | 1048 | |
7442878f | 1049 | return continue_p; |
67492200 GM |
1050 | } |
1051 | ||
1052 | ||
5500c422 | 1053 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1054 | return it as a Lisp_Object. |
1055 | ||
1056 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1057 | set *PART to the id of that element. |
949cf20f | 1058 | |
341f3858 | 1059 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1060 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1061 | ||
1062 | This function was previously implemented with a loop cycling over | |
1063 | windows with Fnext_window, and starting with the frame's selected | |
1064 | window. It turned out that this doesn't work with an | |
1065 | implementation of next_window using Vwindow_list, because | |
1066 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1067 | tree of F when this function is called asynchronously from | |
1068 | note_mouse_highlight. The original loop didn't terminate in this | |
1069 | case. */ | |
5500c422 | 1070 | |
7ab12479 | 1071 | Lisp_Object |
9173a8fb CY |
1072 | window_from_coordinates (struct frame *f, int x, int y, |
1073 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1074 | { |
67492200 | 1075 | Lisp_Object window; |
f95464e4 | 1076 | struct check_window_data cw; |
341f3858 KS |
1077 | enum window_part dummy; |
1078 | ||
1079 | if (part == 0) | |
1080 | part = &dummy; | |
5500c422 | 1081 | |
67492200 | 1082 | window = Qnil; |
9173a8fb | 1083 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1084 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1085 | |
67492200 GM |
1086 | /* If not found above, see if it's in the tool bar window, if a tool |
1087 | bar exists. */ | |
1088 | if (NILP (window) | |
1089 | && tool_bar_p | |
1090 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1091 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
9173a8fb | 1092 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
7442878f | 1093 | != ON_NOTHING)) |
5500c422 | 1094 | { |
341f3858 | 1095 | *part = ON_TEXT; |
67492200 | 1096 | window = f->tool_bar_window; |
5500c422 | 1097 | } |
37962e60 | 1098 | |
67492200 | 1099 | return window; |
7ab12479 JB |
1100 | } |
1101 | ||
ab17c3f2 | 1102 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1103 | doc: /* Return window containing coordinates X and Y on FRAME. |
1104 | If omitted, FRAME defaults to the currently selected frame. | |
1105 | The top left corner of the frame is considered to be row 0, | |
1106 | column 0. */) | |
5842a27b | 1107 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1108 | { |
5500c422 | 1109 | struct frame *f; |
7ab12479 | 1110 | |
44fa5b1e | 1111 | if (NILP (frame)) |
1ae1a37d | 1112 | frame = selected_frame; |
b7826503 | 1113 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1114 | f = XFRAME (frame); |
7ab12479 | 1115 | |
5500c422 | 1116 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1117 | CHECK_NUMBER_OR_FLOAT (x); |
1118 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1119 | |
177c0ea7 | 1120 | return window_from_coordinates (f, |
2c77cf3b RS |
1121 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1122 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1123 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1124 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1125 | 0, 0); |
7ab12479 JB |
1126 | } |
1127 | ||
1128 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1129 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1130 | WINDOW defaults to the selected window. |
1131 | ||
fdb82f93 PJ |
1132 | For a nonselected window, this is the value point would have |
1133 | if that window were selected. | |
1134 | ||
1135 | Note that, when WINDOW is the selected window and its buffer | |
1136 | is also currently selected, the value returned is the same as (point). | |
1137 | It would be more strictly correct to return the `top-level' value | |
1138 | of point, outside of any save-excursion forms. | |
1139 | But that is hard to define. */) | |
5842a27b | 1140 | (Lisp_Object window) |
7ab12479 JB |
1141 | { |
1142 | register struct window *w = decode_window (window); | |
1143 | ||
1144 | if (w == XWINDOW (selected_window) | |
1145 | && current_buffer == XBUFFER (w->buffer)) | |
1146 | return Fpoint (); | |
1147 | return Fmarker_position (w->pointm); | |
1148 | } | |
1149 | ||
1150 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1151 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1152 | WINDOW defaults to the selected window. |
fdb82f93 | 1153 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1154 | (Lisp_Object window) |
7ab12479 JB |
1155 | { |
1156 | return Fmarker_position (decode_window (window)->start); | |
1157 | } | |
1158 | ||
8646118f RS |
1159 | /* This is text temporarily removed from the doc string below. |
1160 | ||
fdb82f93 PJ |
1161 | This function returns nil if the position is not currently known. |
1162 | That happens when redisplay is preempted and doesn't finish. | |
1163 | If in that case you want to compute where the end of the window would | |
1164 | have been if redisplay had finished, do this: | |
1165 | (save-excursion | |
1166 | (goto-char (window-start window)) | |
1167 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1168 | (point))") */ |
1169 | ||
478292ed | 1170 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1171 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1172 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1173 | This is updated by redisplay, when it runs to completion. |
1174 | Simply changing the buffer text or setting `window-start' | |
1175 | does not update this value. | |
a0a37a6f LT |
1176 | Return nil if there is no recorded value. \(This can happen if the |
1177 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1178 | If UPDATE is non-nil, compute the up-to-date position |
1179 | if it isn't already recorded. */) | |
5842a27b | 1180 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1181 | { |
1182 | Lisp_Object value; | |
1183 | struct window *w = decode_window (window); | |
5a41ab94 | 1184 | Lisp_Object buf; |
31790df3 | 1185 | struct buffer *b; |
5a41ab94 RS |
1186 | |
1187 | buf = w->buffer; | |
b7826503 | 1188 | CHECK_BUFFER (buf); |
b3a10345 | 1189 | b = XBUFFER (buf); |
5a41ab94 | 1190 | |
8646118f | 1191 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1192 | /* If we don't know the end position, return nil. |
1193 | The user can compute it with vertical-motion if he wants to. | |
1194 | It would be nicer to do it automatically, | |
1195 | but that's so slow that it would probably bother people. */ | |
1196 | if (NILP (w->window_end_valid)) | |
1197 | return Qnil; | |
8646118f | 1198 | #endif |
7250968e | 1199 | |
478292ed RS |
1200 | if (! NILP (update) |
1201 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1202 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1203 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1204 | && !noninteractive) |
478292ed | 1205 | { |
cbc099e5 GM |
1206 | struct text_pos startp; |
1207 | struct it it; | |
b3a10345 KS |
1208 | struct buffer *old_buffer = NULL; |
1209 | ||
1210 | /* Cannot use Fvertical_motion because that function doesn't | |
1211 | cope with variable-height lines. */ | |
1212 | if (b != current_buffer) | |
1213 | { | |
1214 | old_buffer = current_buffer; | |
1215 | set_buffer_internal (b); | |
1216 | } | |
2d6d9df0 GM |
1217 | |
1218 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1219 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1220 | `-l' containing a call to `rmail' with subsequent other |
1221 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1222 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1223 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1224 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1225 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1226 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1227 | else |
cbc099e5 GM |
1228 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1229 | ||
cbc099e5 GM |
1230 | start_display (&it, w, startp); |
1231 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1232 | if (it.current_y < it.last_visible_y) |
1233 | move_it_past_eol (&it); | |
cbc099e5 | 1234 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1235 | |
99593a9d GM |
1236 | if (old_buffer) |
1237 | set_buffer_internal (old_buffer); | |
478292ed RS |
1238 | } |
1239 | else | |
b3a10345 | 1240 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1241 | |
1242 | return value; | |
1243 | } | |
1244 | ||
1245 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1246 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1247 | Return POS. */) | |
5842a27b | 1248 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1249 | { |
1250 | register struct window *w = decode_window (window); | |
1251 | ||
b7826503 | 1252 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1253 | if (w == XWINDOW (selected_window) |
1254 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1255 | Fgoto_char (pos); |
1256 | else | |
1257 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1258 | |
0685cb3c GM |
1259 | /* We have to make sure that redisplay updates the window to show |
1260 | the new value of point. */ | |
1261 | if (!EQ (window, selected_window)) | |
799417bd | 1262 | ++windows_or_buffers_changed; |
177c0ea7 | 1263 | |
7ab12479 JB |
1264 | return pos; |
1265 | } | |
1266 | ||
1267 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1268 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1269 | WINDOW defaults to the selected window. Return POS. |
1270 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1271 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1272 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1273 | { |
1274 | register struct window *w = decode_window (window); | |
1275 | ||
b7826503 | 1276 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1277 | set_marker_restricted (w->start, pos, w->buffer); |
1278 | /* this is not right, but much easier than doing what is right. */ | |
1279 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1280 | if (NILP (noforce)) |
7ab12479 JB |
1281 | w->force_start = Qt; |
1282 | w->update_mode_line = Qt; | |
d834a2e9 | 1283 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1284 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1285 | if (!EQ (window, selected_window)) |
1286 | windows_or_buffers_changed++; | |
ce7fae7d | 1287 | |
7ab12479 JB |
1288 | return pos; |
1289 | } | |
1290 | ||
d653c8cc | 1291 | |
7ab12479 | 1292 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1293 | 0, 1, 0, |
1294 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1295 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1296 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1297 | never called with WINDOW as its argument, or the value set by that | |
1298 | function was internally reset since its last call. WINDOW defaults to | |
1299 | the selected window. | |
1300 | ||
1301 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1302 | from displaying another buffer in it. `get-lru-window' and | |
1303 | `get-largest-window' treat dedicated windows specially. | |
1304 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1305 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1306 | ||
1307 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1308 | window, unless that window is "strongly" dedicated to its buffer, that | |
1309 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1310 | (Lisp_Object window) |
7ab12479 JB |
1311 | { |
1312 | return decode_window (window)->dedicated; | |
1313 | } | |
1314 | ||
d207b766 RS |
1315 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1316 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1317 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1318 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1319 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1320 | Return FLAG. |
1321 | ||
7bfac547 MR |
1322 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1323 | from displaying another buffer in it. `get-lru-window' and | |
1324 | `get-largest-window' treat dedicated windows specially. | |
1325 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1326 | `kill-buffer' can delete a dedicated window and the containing | |
1327 | frame. | |
1328 | ||
1329 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1330 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1331 | displayed by a window, unless that window is strongly dedicated to its | |
1332 | buffer. If and when `set-window-buffer' displays another buffer in a | |
1333 | window, it also makes sure that the window is not marked as dedicated. */) | |
5842a27b | 1334 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1335 | { |
1336 | register struct window *w = decode_window (window); | |
1337 | ||
d653c8cc | 1338 | w->dedicated = flag; |
7ab12479 JB |
1339 | return w->dedicated; |
1340 | } | |
1341 | ||
d653c8cc | 1342 | |
cfbb2395 JB |
1343 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1344 | 0, 1, 0, | |
d653c8cc MR |
1345 | doc: /* Return the parameters of WINDOW and their values. |
1346 | WINDOW defaults to the selected window. The return value is a list of | |
1347 | elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1348 | (Lisp_Object window) |
cfbb2395 | 1349 | { |
927abf37 | 1350 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1351 | } |
1352 | ||
1353 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1354 | 2, 2, 0, | |
d653c8cc MR |
1355 | doc: /* Return WINDOW's value for PARAMETER. |
1356 | WINDOW defaults to the selected window. */) | |
5842a27b | 1357 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1358 | { |
927abf37 JB |
1359 | Lisp_Object result; |
1360 | ||
1361 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1362 | return CDR_SAFE (result); | |
cfbb2395 JB |
1363 | } |
1364 | ||
cfbb2395 JB |
1365 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1366 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1367 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1368 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1369 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 JB |
1370 | { |
1371 | register struct window *w = decode_window (window); | |
1372 | Lisp_Object old_alist_elt; | |
1373 | ||
1374 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1375 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1376 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1377 | else | |
1378 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1379 | return value; |
cfbb2395 JB |
1380 | } |
1381 | ||
1382 | ||
7ab12479 JB |
1383 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1384 | 0, 1, 0, | |
c85322d0 EZ |
1385 | doc: /* Return the display-table that WINDOW is using. |
1386 | WINDOW defaults to the selected window. */) | |
5842a27b | 1387 | (Lisp_Object window) |
7ab12479 JB |
1388 | { |
1389 | return decode_window (window)->display_table; | |
1390 | } | |
1391 | ||
5500c422 GM |
1392 | /* Get the display table for use on window W. This is either W's |
1393 | display table or W's buffer's display table. Ignore the specified | |
1394 | tables if they are not valid; if no valid table is specified, | |
1395 | return 0. */ | |
7ab12479 | 1396 | |
319315f1 | 1397 | struct Lisp_Char_Table * |
971de7fb | 1398 | window_display_table (struct window *w) |
7ab12479 | 1399 | { |
c756cdbe GM |
1400 | struct Lisp_Char_Table *dp = NULL; |
1401 | ||
1402 | if (DISP_TABLE_P (w->display_table)) | |
1403 | dp = XCHAR_TABLE (w->display_table); | |
1404 | else if (BUFFERP (w->buffer)) | |
1405 | { | |
1406 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1407 | |
c756cdbe GM |
1408 | if (DISP_TABLE_P (b->display_table)) |
1409 | dp = XCHAR_TABLE (b->display_table); | |
1410 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1411 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1412 | } | |
171d003c | 1413 | |
c756cdbe | 1414 | return dp; |
7ab12479 JB |
1415 | } |
1416 | ||
3a2712f9 | 1417 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1418 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1419 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1420 | { |
1421 | register struct window *w; | |
7ab12479 JB |
1422 | |
1423 | w = decode_window (window); | |
1424 | w->display_table = table; | |
1425 | return table; | |
1426 | } | |
1427 | \f | |
1428 | /* Record info on buffer window w is displaying | |
1429 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1430 | static void |
971de7fb | 1431 | unshow_buffer (register struct window *w) |
7ab12479 | 1432 | { |
12cae7c0 | 1433 | Lisp_Object buf; |
b73ea88e | 1434 | struct buffer *b; |
7ab12479 | 1435 | |
12cae7c0 | 1436 | buf = w->buffer; |
b73ea88e RS |
1437 | b = XBUFFER (buf); |
1438 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1439 | abort (); |
1440 | ||
573f41ab | 1441 | #if 0 |
7ab12479 JB |
1442 | if (w == XWINDOW (selected_window) |
1443 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1444 | /* Do this except when the selected window's buffer | |
1445 | is being removed from some other window. */ | |
573f41ab RS |
1446 | #endif |
1447 | /* last_window_start records the start position that this buffer | |
1448 | had in the last window to be disconnected from it. | |
1449 | Now that this statement is unconditional, | |
1450 | it is possible for the buffer to be displayed in the | |
1451 | selected window, while last_window_start reflects another | |
1452 | window which was recently showing the same buffer. | |
1453 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1454 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1455 | |
1456 | /* Point in the selected window's buffer | |
1457 | is actually stored in that buffer, and the window's pointm isn't used. | |
1458 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1459 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1460 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1461 | && !(WINDOWP (b->last_selected_window) |
1462 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1463 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1464 | temp_set_point_both (b, |
1465 | clip_to_bounds (BUF_BEGV (b), | |
1466 | XMARKER (w->pointm)->charpos, | |
1467 | BUF_ZV (b)), | |
1468 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1469 | marker_byte_position (w->pointm), | |
1470 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1471 | |
8801a864 KR |
1472 | if (WINDOWP (b->last_selected_window) |
1473 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1474 | b->last_selected_window = Qnil; |
7ab12479 JB |
1475 | } |
1476 | ||
1477 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1478 | static void |
971de7fb | 1479 | replace_window (Lisp_Object old, Lisp_Object replacement) |
7ab12479 JB |
1480 | { |
1481 | register Lisp_Object tem; | |
1482 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1483 | ||
44fa5b1e JB |
1484 | /* If OLD is its frame's root_window, then replacement is the new |
1485 | root_window for that frame. */ | |
7ab12479 | 1486 | |
7f4161e0 | 1487 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1488 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1489 | |
949cf20f KS |
1490 | p->left_col = o->left_col; |
1491 | p->top_line = o->top_line; | |
1492 | p->total_cols = o->total_cols; | |
1493 | p->total_lines = o->total_lines; | |
5500c422 GM |
1494 | p->desired_matrix = p->current_matrix = 0; |
1495 | p->vscroll = 0; | |
72af86bd AS |
1496 | memset (&p->cursor, 0, sizeof (p->cursor)); |
1497 | memset (&p->last_cursor, 0, sizeof (p->last_cursor)); | |
1498 | memset (&p->phys_cursor, 0, sizeof (p->phys_cursor)); | |
5500c422 | 1499 | p->phys_cursor_type = -1; |
4b26579e | 1500 | p->phys_cursor_width = -1; |
5500c422 GM |
1501 | p->must_be_updated_p = 0; |
1502 | p->pseudo_window_p = 0; | |
1503 | XSETFASTINT (p->window_end_vpos, 0); | |
1504 | XSETFASTINT (p->window_end_pos, 0); | |
1505 | p->window_end_valid = Qnil; | |
7bbb5782 | 1506 | p->frozen_window_start_p = 0; |
949cf20f | 1507 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1508 | |
1509 | p->next = tem = o->next; | |
265a9e55 | 1510 | if (!NILP (tem)) |
7ab12479 JB |
1511 | XWINDOW (tem)->prev = replacement; |
1512 | ||
1513 | p->prev = tem = o->prev; | |
265a9e55 | 1514 | if (!NILP (tem)) |
7ab12479 JB |
1515 | XWINDOW (tem)->next = replacement; |
1516 | ||
1517 | p->parent = tem = o->parent; | |
265a9e55 | 1518 | if (!NILP (tem)) |
7ab12479 JB |
1519 | { |
1520 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1521 | XWINDOW (tem)->vchild = replacement; | |
1522 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1523 | XWINDOW (tem)->hchild = replacement; | |
1524 | } | |
1525 | ||
1526 | /*** Here, if replacement is a vertical combination | |
1527 | and so is its new parent, we should make replacement's | |
1528 | children be children of that parent instead. ***/ | |
1529 | } | |
1530 | ||
1531 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
8fef9de1 MR |
1532 | doc: /* Remove WINDOW from its frame. |
1533 | WINDOW defaults to the selected window. Return nil. | |
1534 | Signal an error when WINDOW is the only window on its frame. */) | |
5842a27b | 1535 | (register Lisp_Object window) |
543f5fb1 | 1536 | { |
eeca6f6f SM |
1537 | struct frame *f; |
1538 | if (NILP (window)) | |
1539 | window = selected_window; | |
dbf64827 JB |
1540 | else |
1541 | CHECK_LIVE_WINDOW (window); | |
1542 | ||
eeca6f6f | 1543 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
543f5fb1 RS |
1544 | delete_window (window); |
1545 | ||
eeca6f6f | 1546 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1547 | |
1548 | return Qnil; | |
1549 | } | |
1550 | ||
5e14b1fc | 1551 | void |
971de7fb | 1552 | delete_window (register Lisp_Object window) |
7ab12479 JB |
1553 | { |
1554 | register Lisp_Object tem, parent, sib; | |
1555 | register struct window *p; | |
1556 | register struct window *par; | |
951f9df5 | 1557 | struct frame *f; |
7ab12479 | 1558 | |
605be8af JB |
1559 | /* Because this function is called by other C code on non-leaf |
1560 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1561 | so we can't decode_window here. */ | |
eeca6f6f | 1562 | CHECK_WINDOW (window); |
7ab12479 | 1563 | p = XWINDOW (window); |
605be8af | 1564 | |
0d384044 | 1565 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1566 | if (NILP (p->buffer) |
1567 | && NILP (p->hchild) | |
1568 | && NILP (p->vchild)) | |
296b535c | 1569 | return; |
605be8af | 1570 | |
7ab12479 | 1571 | parent = p->parent; |
265a9e55 | 1572 | if (NILP (parent)) |
7ab12479 JB |
1573 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1574 | par = XWINDOW (parent); | |
1575 | ||
1576 | windows_or_buffers_changed++; | |
67492200 | 1577 | Vwindow_list = Qnil; |
951f9df5 GM |
1578 | f = XFRAME (WINDOW_FRAME (p)); |
1579 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1580 | |
605be8af JB |
1581 | /* Are we trying to delete any frame's selected window? */ |
1582 | { | |
192c3131 | 1583 | Lisp_Object swindow, pwindow; |
605be8af | 1584 | |
0def0403 RS |
1585 | /* See if the frame's selected window is either WINDOW |
1586 | or any subwindow of it, by finding all that window's parents | |
1587 | and comparing each one with WINDOW. */ | |
192c3131 | 1588 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1589 | |
192c3131 | 1590 | while (1) |
0def0403 | 1591 | { |
192c3131 RS |
1592 | pwindow = swindow; |
1593 | while (!NILP (pwindow)) | |
1594 | { | |
1595 | if (EQ (window, pwindow)) | |
1596 | break; | |
1597 | pwindow = XWINDOW (pwindow)->parent; | |
1598 | } | |
1599 | ||
1600 | /* If the window being deleted is not a parent of SWINDOW, | |
1601 | then SWINDOW is ok as the new selected window. */ | |
1602 | if (!EQ (window, pwindow)) | |
0def0403 | 1603 | break; |
192c3131 | 1604 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1605 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1606 | |
1607 | /* If we get back to the frame's selected window, | |
1608 | it means there was no acceptable alternative, | |
1609 | so we cannot delete. */ | |
1610 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1611 | error ("Cannot delete window"); | |
0def0403 RS |
1612 | } |
1613 | ||
192c3131 RS |
1614 | /* If we need to change SWINDOW, do it. */ |
1615 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1616 | { |
605be8af JB |
1617 | /* If we're about to delete the selected window on the |
1618 | selected frame, then we should use Fselect_window to select | |
1619 | the new window. On the other hand, if we're about to | |
1620 | delete the selected window on any other frame, we shouldn't do | |
1621 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1622 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1623 | Fselect_window (swindow, Qnil); |
605be8af | 1624 | else |
192c3131 | 1625 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1626 | } |
1627 | } | |
7ab12479 | 1628 | |
0d384044 RS |
1629 | /* Now we know we can delete this one. */ |
1630 | window_deletion_count++; | |
1631 | ||
7ab12479 JB |
1632 | tem = p->buffer; |
1633 | /* tem is null for dummy parent windows | |
1634 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1635 | if (!NILP (tem)) |
7ab12479 JB |
1636 | { |
1637 | unshow_buffer (p); | |
2d0834cc SM |
1638 | unchain_marker (XMARKER (p->pointm)); |
1639 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1640 | } |
1641 | ||
05e71564 GM |
1642 | /* Free window glyph matrices. It is sure that they are allocated |
1643 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1644 | events and other events that access glyph matrices are not | |
1645 | processed while we are changing them. */ | |
1646 | BLOCK_INPUT; | |
951f9df5 | 1647 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1648 | |
7ab12479 | 1649 | tem = p->next; |
265a9e55 | 1650 | if (!NILP (tem)) |
7ab12479 JB |
1651 | XWINDOW (tem)->prev = p->prev; |
1652 | ||
1653 | tem = p->prev; | |
265a9e55 | 1654 | if (!NILP (tem)) |
7ab12479 JB |
1655 | XWINDOW (tem)->next = p->next; |
1656 | ||
1657 | if (EQ (window, par->hchild)) | |
1658 | par->hchild = p->next; | |
1659 | if (EQ (window, par->vchild)) | |
1660 | par->vchild = p->next; | |
1661 | ||
1662 | /* Find one of our siblings to give our space to. */ | |
1663 | sib = p->prev; | |
265a9e55 | 1664 | if (NILP (sib)) |
7ab12479 JB |
1665 | { |
1666 | /* If p gives its space to its next sibling, that sibling needs | |
1667 | to have its top/left side pulled back to where p's is. | |
1668 | set_window_{height,width} will re-position the sibling's | |
1669 | children. */ | |
1670 | sib = p->next; | |
949cf20f KS |
1671 | XWINDOW (sib)->top_line = p->top_line; |
1672 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1673 | } |
1674 | ||
1675 | /* Stretch that sibling. */ | |
265a9e55 | 1676 | if (!NILP (par->vchild)) |
7ab12479 | 1677 | set_window_height (sib, |
949cf20f | 1678 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1679 | 1); |
265a9e55 | 1680 | if (!NILP (par->hchild)) |
7ab12479 | 1681 | set_window_width (sib, |
949cf20f | 1682 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1683 | 1); |
1684 | ||
1685 | /* If parent now has only one child, | |
1686 | put the child into the parent's place. */ | |
7ab12479 | 1687 | tem = par->hchild; |
265a9e55 | 1688 | if (NILP (tem)) |
7ab12479 | 1689 | tem = par->vchild; |
5494d7bc | 1690 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1691 | replace_window (parent, tem); |
5494d7bc JD |
1692 | par = XWINDOW (tem); |
1693 | } | |
605be8af JB |
1694 | |
1695 | /* Since we may be deleting combination windows, we must make sure that | |
1696 | not only p but all its children have been marked as deleted. */ | |
1697 | if (! NILP (p->hchild)) | |
1698 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1699 | else if (! NILP (p->vchild)) | |
1700 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1701 | ||
1702 | /* Mark this window as deleted. */ | |
1703 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1704 | |
5494d7bc JD |
1705 | if (! NILP (par->parent)) |
1706 | par = XWINDOW (par->parent); | |
1707 | ||
1708 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1709 | one of them. */ | |
ae12ecd7 | 1710 | |
5494d7bc JD |
1711 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1712 | { | |
1713 | p = XWINDOW (par->vchild); | |
1714 | par->vchild = p->vchild; | |
1715 | tem = p->vchild; | |
1716 | } | |
1717 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1718 | { | |
1719 | p = XWINDOW (par->hchild); | |
1720 | par->hchild = p->hchild; | |
1721 | tem = p->hchild; | |
1722 | } | |
1723 | else | |
1724 | p = 0; | |
1725 | ||
1726 | if (p) | |
1727 | { | |
1728 | while (! NILP (tem)) { | |
1729 | XWINDOW (tem)->parent = p->parent; | |
1730 | if (NILP (XWINDOW (tem)->next)) | |
1731 | break; | |
1732 | tem = XWINDOW (tem)->next; | |
1733 | } | |
1734 | if (! NILP (tem)) { | |
1735 | /* The next of the v/hchild we are removing is now the next of the | |
1736 | last child for the v/hchild: | |
1737 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1738 | | | |
1739 | -> next3 | |
1740 | After: v/hchild -> next1 -> next2 -> next3 | |
1741 | */ | |
1742 | XWINDOW (tem)->next = p->next; | |
1743 | if (! NILP (p->next)) | |
1744 | XWINDOW (p->next)->prev = tem; | |
1745 | } | |
1746 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1747 | } | |
1748 | ||
1749 | ||
5500c422 | 1750 | /* Adjust glyph matrices. */ |
951f9df5 | 1751 | adjust_glyphs (f); |
05e71564 | 1752 | UNBLOCK_INPUT; |
7ab12479 | 1753 | } |
67492200 GM |
1754 | |
1755 | ||
7ab12479 | 1756 | \f |
67492200 GM |
1757 | /*********************************************************************** |
1758 | Window List | |
1759 | ***********************************************************************/ | |
1760 | ||
f95464e4 GM |
1761 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1762 | pointer. This is a callback function for foreach_window, used in | |
1763 | function window_list. */ | |
67492200 GM |
1764 | |
1765 | static int | |
971de7fb | 1766 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 1767 | { |
f95464e4 | 1768 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1769 | Lisp_Object window; |
1770 | XSETWINDOW (window, w); | |
212116d6 | 1771 | *list = Fcons (window, *list); |
67492200 GM |
1772 | return 1; |
1773 | } | |
1774 | ||
1775 | ||
1776 | /* Return a list of all windows, for use by next_window. If | |
1777 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1778 | list, cache it in Vwindow_list, and return that. */ | |
1779 | ||
1780 | static Lisp_Object | |
971de7fb | 1781 | window_list (void) |
67492200 GM |
1782 | { |
1783 | if (!CONSP (Vwindow_list)) | |
1784 | { | |
1785 | Lisp_Object tail; | |
212116d6 | 1786 | |
67492200 GM |
1787 | Vwindow_list = Qnil; |
1788 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1789 | { |
1790 | Lisp_Object args[2]; | |
1791 | ||
1792 | /* We are visiting windows in canonical order, and add | |
1793 | new windows at the front of args[1], which means we | |
1794 | have to reverse this list at the end. */ | |
1795 | args[1] = Qnil; | |
1796 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1797 | args[0] = Vwindow_list; | |
1798 | args[1] = Fnreverse (args[1]); | |
1799 | Vwindow_list = Fnconc (2, args); | |
1800 | } | |
67492200 | 1801 | } |
177c0ea7 | 1802 | |
67492200 GM |
1803 | return Vwindow_list; |
1804 | } | |
1805 | ||
1806 | ||
118ea242 GM |
1807 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1808 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1809 | |
118ea242 GM |
1810 | MINIBUF t means WINDOW may be minibuffer windows. |
1811 | `lambda' means WINDOW may not be a minibuffer window. | |
1812 | a window means a specific minibuffer window | |
67492200 | 1813 | |
118ea242 GM |
1814 | ALL_FRAMES t means search all frames, |
1815 | nil means search just current frame, | |
1816 | `visible' means search just visible frames, | |
1817 | 0 means search visible and iconified frames, | |
1818 | a window means search the frame that window belongs to, | |
1819 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1820 | |
1821 | static int | |
971de7fb | 1822 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
1823 | { |
1824 | struct window *w = XWINDOW (window); | |
1825 | struct frame *f = XFRAME (w->frame); | |
1826 | int candidate_p = 1; | |
1827 | ||
1828 | if (!BUFFERP (w->buffer)) | |
1829 | candidate_p = 0; | |
1830 | else if (MINI_WINDOW_P (w) | |
1831 | && (EQ (minibuf, Qlambda) | |
1832 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1833 | { | |
1834 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1835 | If it is a window, consider only that one. */ | |
1836 | candidate_p = 0; | |
1837 | } | |
118ea242 GM |
1838 | else if (EQ (all_frames, Qt)) |
1839 | candidate_p = 1; | |
67492200 | 1840 | else if (NILP (all_frames)) |
118ea242 GM |
1841 | { |
1842 | xassert (WINDOWP (owindow)); | |
1843 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1844 | } | |
67492200 GM |
1845 | else if (EQ (all_frames, Qvisible)) |
1846 | { | |
1847 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1848 | candidate_p = FRAME_VISIBLE_P (f) |
1849 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1850 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1851 | ||
67492200 GM |
1852 | } |
1853 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1854 | { | |
1855 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1856 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1857 | #ifdef HAVE_X_WINDOWS | |
1858 | /* Yuck!! If we've just created the frame and the | |
1859 | window-manager requested the user to place it | |
1860 | manually, the window may still not be considered | |
1861 | `visible'. I'd argue it should be at least | |
1862 | something like `iconified', but don't know how to do | |
1863 | that yet. --Stef */ | |
1864 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1865 | && !f->output_data.x->has_been_visible) | |
1866 | #endif | |
de509a60 SM |
1867 | ) |
1868 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1869 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1870 | } |
67492200 GM |
1871 | else if (WINDOWP (all_frames)) |
1872 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1873 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1874 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1875 | else if (FRAMEP (all_frames)) |
1876 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1877 | |
1878 | return candidate_p; | |
1879 | } | |
1880 | ||
1881 | ||
1882 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1883 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1884 | ALL_FRAMES. */ | |
1885 | ||
1886 | static void | |
971de7fb | 1887 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
1888 | { |
1889 | if (NILP (*window)) | |
1890 | *window = selected_window; | |
1891 | else | |
b7826503 | 1892 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1893 | |
67492200 GM |
1894 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1895 | does. */ | |
1896 | if (NILP (*minibuf)) | |
1897 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1898 | else if (!EQ (*minibuf, Qt)) | |
1899 | *minibuf = Qlambda; | |
177c0ea7 | 1900 | |
67492200 GM |
1901 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1902 | => count none of them, or a specific minibuffer window (the | |
1903 | active one) to count. */ | |
1904 | ||
1905 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1906 | if (NILP (*all_frames)) | |
1907 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1908 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1909 | : Qnil); | |
1910 | else if (EQ (*all_frames, Qvisible)) | |
1911 | ; | |
0f8fe9a2 | 1912 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1913 | ; |
1914 | else if (FRAMEP (*all_frames)) | |
1915 | ; | |
1916 | else if (!EQ (*all_frames, Qt)) | |
1917 | *all_frames = Qnil; | |
177c0ea7 | 1918 | |
67492200 GM |
1919 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1920 | search just current frame, `visible' meaning search just visible | |
1921 | frames, 0 meaning search visible and iconified frames, or a | |
1922 | window, meaning search the frame that window belongs to, or a | |
1923 | frame, meaning consider windows on that frame, only. */ | |
1924 | } | |
1925 | ||
1926 | ||
ab6d1131 | 1927 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
1928 | of windows. NEXT_P non-zero means return the next window. See the |
1929 | documentation string of next-window for the meaning of MINIBUF and | |
1930 | ALL_FRAMES. */ | |
1931 | ||
1932 | static Lisp_Object | |
971de7fb | 1933 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
1934 | { |
1935 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1936 | |
67492200 GM |
1937 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1938 | return the first window on the frame. */ | |
1939 | if (FRAMEP (all_frames) | |
1940 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1941 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1942 | |
212116d6 | 1943 | if (next_p) |
67492200 GM |
1944 | { |
1945 | Lisp_Object list; | |
177c0ea7 | 1946 | |
67492200 GM |
1947 | /* Find WINDOW in the list of all windows. */ |
1948 | list = Fmemq (window, window_list ()); | |
1949 | ||
1950 | /* Scan forward from WINDOW to the end of the window list. */ | |
1951 | if (CONSP (list)) | |
1952 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1953 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1954 | break; |
1955 | ||
1956 | /* Scan from the start of the window list up to WINDOW. */ | |
1957 | if (!CONSP (list)) | |
1958 | for (list = Vwindow_list; | |
1959 | CONSP (list) && !EQ (XCAR (list), window); | |
1960 | list = XCDR (list)) | |
118ea242 | 1961 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1962 | break; |
1963 | ||
1964 | if (CONSP (list)) | |
1965 | window = XCAR (list); | |
1966 | } | |
1967 | else | |
1968 | { | |
1969 | Lisp_Object candidate, list; | |
177c0ea7 | 1970 | |
67492200 GM |
1971 | /* Scan through the list of windows for candidates. If there are |
1972 | candidate windows in front of WINDOW, the last one of these | |
1973 | is the one we want. If there are candidates following WINDOW | |
1974 | in the list, again the last one of these is the one we want. */ | |
1975 | candidate = Qnil; | |
1976 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1977 | { | |
1978 | if (EQ (XCAR (list), window)) | |
1979 | { | |
1980 | if (WINDOWP (candidate)) | |
1981 | break; | |
1982 | } | |
118ea242 GM |
1983 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1984 | all_frames)) | |
67492200 GM |
1985 | candidate = XCAR (list); |
1986 | } | |
1987 | ||
1988 | if (WINDOWP (candidate)) | |
1989 | window = candidate; | |
1990 | } | |
1991 | ||
1992 | return window; | |
1993 | } | |
7ab12479 | 1994 | |
7ab12479 | 1995 | |
26f6279d | 1996 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
1997 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
1998 | WINDOW defaults to the selected window. The optional arguments | |
1999 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 2000 | |
ab6d1131 MR |
2001 | MINIBUF t means consider the minibuffer window even if the |
2002 | minibuffer is not active. MINIBUF nil or omitted means consider | |
2003 | the minibuffer window only if the minibuffer is active. Any | |
2004 | other value means do not consider the minibuffer window even if | |
2005 | the minibuffer is active. | |
fdb82f93 PJ |
2006 | |
2007 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
2008 | is active, all windows on all frames that share that minibuffer |
2009 | are considered too. Therefore, if you are using a separate | |
2010 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
2011 | counts, `next-window' considers the windows in the frame from | |
2012 | which you entered the minibuffer, as well as the minibuffer | |
2013 | window. | |
2014 | ||
2015 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
2016 | frame, plus the minibuffer window if specified by the MINIBUF | |
2017 | argument, see above. If the minibuffer counts, consider all | |
2018 | windows on all frames that share that minibuffer too. | |
2019 | ALL-FRAMES t means consider all windows on all existing frames. | |
2020 | ALL-FRAMES `visible' means consider all windows on all visible | |
2021 | frames. | |
2022 | ALL-FRAMES 0 means consider all windows on all visible and | |
2023 | iconified frames. | |
2024 | ALL-FRAMES a frame means consider all windows on that frame only. | |
2025 | Anything else means consider all windows on WINDOW's frame and no | |
2026 | others. | |
fdb82f93 PJ |
2027 | |
2028 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2029 | `next-window' to iterate through the entire cycle of acceptable | |
2030 | windows, eventually ending up back at the window you started with. | |
2031 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2032 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2033 | { |
67492200 | 2034 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2035 | } |
2036 | ||
67492200 | 2037 | |
26f6279d | 2038 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
2039 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
2040 | WINDOW defaults to the selected window. The optional arguments | |
2041 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
2042 | For the precise meaning of these arguments see `next-window'. | |
2043 | ||
2044 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2045 | use `previous-window' to iterate through the entire cycle of | |
2046 | acceptable windows, eventually ending up back at the window you | |
2047 | started with. `next-window' traverses the same cycle, in the | |
2048 | reverse order. */) | |
5842a27b | 2049 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2050 | { |
67492200 | 2051 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2052 | } |
2053 | ||
67492200 | 2054 | |
62c07cc7 | 2055 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2056 | doc: /* Select another window in cyclic ordering of windows. |
2057 | COUNT specifies the number of windows to skip, starting with the | |
2058 | selected window, before making the selection. If COUNT is | |
2059 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2060 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2061 | window, so select the selected window. In an interactive call, | |
2062 | COUNT is the numeric prefix argument. Return nil. | |
2063 | ||
2064 | This function uses `next-window' for finding the window to select. | |
2065 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2066 | but the MINIBUF argument of `next-window' is always effectively | |
2067 | nil. */) | |
5842a27b | 2068 | (Lisp_Object count, Lisp_Object all_frames) |
7ab12479 | 2069 | { |
67492200 GM |
2070 | Lisp_Object window; |
2071 | int i; | |
7ab12479 | 2072 | |
ab6d1131 | 2073 | CHECK_NUMBER (count); |
67492200 | 2074 | window = selected_window; |
177c0ea7 | 2075 | |
ab6d1131 | 2076 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2077 | window = Fnext_window (window, Qnil, all_frames); |
2078 | for (; i < 0; ++i) | |
2079 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2080 | |
14d87dc9 | 2081 | Fselect_window (window, Qnil); |
7ab12479 JB |
2082 | return Qnil; |
2083 | } | |
67492200 GM |
2084 | |
2085 | ||
2086 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2087 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2088 | FRAME nil or omitted means use the selected frame. | |
2089 | WINDOW nil or omitted means use the selected window. | |
2090 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2091 | MINIBUF nil or omitted means include the minibuffer window only | |
2092 | if it's active. | |
2093 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
5842a27b | 2094 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) |
cd2904bd | 2095 | { |
cd2904bd | 2096 | if (NILP (window)) |
acc6289a SM |
2097 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2098 | CHECK_WINDOW (window); | |
cd2904bd GM |
2099 | if (NILP (frame)) |
2100 | frame = selected_frame; | |
2101 | ||
2102 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2103 | error ("Window is on a different frame"); | |
2104 | ||
2105 | return window_list_1 (window, minibuf, frame); | |
2106 | } | |
2107 | ||
2108 | ||
ab6d1131 | 2109 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2110 | for `next-window'. */ |
2111 | ||
2112 | static Lisp_Object | |
971de7fb | 2113 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2114 | { |
403de3b4 | 2115 | Lisp_Object tail, list, rest; |
67492200 GM |
2116 | |
2117 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2118 | list = Qnil; | |
177c0ea7 | 2119 | |
67492200 | 2120 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2121 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2122 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2123 | |
403de3b4 RS |
2124 | /* Rotate the list to start with WINDOW. */ |
2125 | list = Fnreverse (list); | |
2126 | rest = Fmemq (window, list); | |
2127 | if (!NILP (rest) && !EQ (rest, list)) | |
2128 | { | |
1725a7c9 | 2129 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2130 | ; |
2131 | XSETCDR (tail, Qnil); | |
2132 | list = nconc2 (rest, list); | |
2133 | } | |
2134 | return list; | |
67492200 GM |
2135 | } |
2136 | ||
2137 | ||
7ab12479 JB |
2138 | \f |
2139 | /* Look at all windows, performing an operation specified by TYPE | |
2140 | with argument OBJ. | |
75d8f668 | 2141 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2142 | Qnil, look at just the selected frame; |
89bca612 | 2143 | Qvisible, look at visible frames; |
75d8f668 | 2144 | a frame, just look at windows on that frame. |
85fe3b5e | 2145 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2146 | |
2147 | enum window_loop | |
2148 | { | |
2149 | WINDOW_LOOP_UNUSED, | |
2150 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2151 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2152 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2153 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2154 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2155 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2156 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2157 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2158 | }; |
2159 | ||
2160 | static Lisp_Object | |
971de7fb | 2161 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2162 | { |
118ea242 GM |
2163 | Lisp_Object window, windows, best_window, frame_arg; |
2164 | struct frame *f; | |
ffdc852d | 2165 | struct gcpro gcpro1; |
177c0ea7 | 2166 | |
44fa5b1e JB |
2167 | /* If we're only looping through windows on a particular frame, |
2168 | frame points to that frame. If we're looping through windows | |
2169 | on all frames, frame is 0. */ | |
2170 | if (FRAMEP (frames)) | |
118ea242 | 2171 | f = XFRAME (frames); |
44fa5b1e | 2172 | else if (NILP (frames)) |
118ea242 | 2173 | f = SELECTED_FRAME (); |
7ab12479 | 2174 | else |
118ea242 | 2175 | f = NULL; |
177c0ea7 | 2176 | |
118ea242 | 2177 | if (f) |
89bca612 | 2178 | frame_arg = Qlambda; |
0f8fe9a2 | 2179 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2180 | frame_arg = frames; |
89bca612 RS |
2181 | else if (EQ (frames, Qvisible)) |
2182 | frame_arg = frames; | |
118ea242 GM |
2183 | else |
2184 | frame_arg = Qt; | |
7ab12479 | 2185 | |
89bca612 RS |
2186 | /* frame_arg is Qlambda to stick to one frame, |
2187 | Qvisible to consider all visible frames, | |
2188 | or Qt otherwise. */ | |
2189 | ||
7ab12479 | 2190 | /* Pick a window to start with. */ |
017b2bad | 2191 | if (WINDOWP (obj)) |
118ea242 GM |
2192 | window = obj; |
2193 | else if (f) | |
2194 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2195 | else |
118ea242 | 2196 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2197 | |
cd2904bd | 2198 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2199 | GCPRO1 (windows); |
7ab12479 | 2200 | best_window = Qnil; |
118ea242 | 2201 | |
e67a1dea | 2202 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2203 | { |
118ea242 | 2204 | struct window *w; |
177c0ea7 | 2205 | |
118ea242 GM |
2206 | window = XCAR (windows); |
2207 | w = XWINDOW (window); | |
177c0ea7 | 2208 | |
118ea242 GM |
2209 | /* Note that we do not pay attention here to whether the frame |
2210 | is visible, since Fwindow_list skips non-visible frames if | |
2211 | that is desired, under the control of frame_arg. */ | |
2212 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2213 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2214 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2215 | || (mini && minibuf_level > 0)) |
2216 | switch (type) | |
2217 | { | |
2218 | case GET_BUFFER_WINDOW: | |
118ea242 | 2219 | if (EQ (w->buffer, obj) |
5c204627 RS |
2220 | /* Don't find any minibuffer window |
2221 | except the one that is currently in use. */ | |
118ea242 GM |
2222 | && (MINI_WINDOW_P (w) |
2223 | ? EQ (window, minibuf_window) | |
2224 | : 1)) | |
2225 | { | |
5ddc1b75 GM |
2226 | if (NILP (best_window)) |
2227 | best_window = window; | |
2228 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2229 | /* Prefer to return selected-window. */ |
2230 | RETURN_UNGCPRO (window); | |
2231 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2232 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2233 | best_window = window; |
118ea242 | 2234 | } |
7ab12479 JB |
2235 | break; |
2236 | ||
2237 | case GET_LRU_WINDOW: | |
20b69789 SM |
2238 | /* `obj' is an integer encoding a bitvector. |
2239 | `obj & 1' means consider only full-width windows. | |
2240 | `obj & 2' means consider also dedicated windows. */ | |
2241 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2242 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2243 | /* Minibuffer windows are always ignored. */ |
2244 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2245 | break; |
265a9e55 | 2246 | if (NILP (best_window) |
7ab12479 | 2247 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2248 | > XFASTINT (w->use_time))) |
2249 | best_window = window; | |
7ab12479 JB |
2250 | break; |
2251 | ||
2252 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2253 | if (!EQ (window, obj)) |
2254 | Fdelete_window (window); | |
7ab12479 JB |
2255 | break; |
2256 | ||
2257 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2258 | if (EQ (w->buffer, obj)) |
7ab12479 | 2259 | { |
118ea242 | 2260 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2261 | |
2262 | /* If this window is dedicated, and in a frame of its own, | |
2263 | kill the frame. */ | |
118ea242 GM |
2264 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2265 | && !NILP (w->dedicated) | |
3548e138 | 2266 | && other_visible_frames (f)) |
7ab12479 | 2267 | { |
3548e138 RS |
2268 | /* Skip the other windows on this frame. |
2269 | There might be one, the minibuffer! */ | |
118ea242 GM |
2270 | while (CONSP (XCDR (windows)) |
2271 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2272 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2273 | windows = XCDR (windows); | |
177c0ea7 | 2274 | |
3548e138 | 2275 | /* Now we can safely delete the frame. */ |
56f2de10 | 2276 | delete_frame (w->frame, Qnil); |
118ea242 GM |
2277 | } |
2278 | else if (NILP (w->parent)) | |
2279 | { | |
2280 | /* If we're deleting the buffer displayed in the | |
2281 | only window on the frame, find a new buffer to | |
2282 | display there. */ | |
2283 | Lisp_Object buffer; | |
2284 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1c33c906 MR |
2285 | /* Reset dedicated state of window. */ |
2286 | w->dedicated = Qnil; | |
949cf20f | 2287 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2288 | if (EQ (window, selected_window)) |
2289 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2290 | } |
2291 | else | |
118ea242 | 2292 | Fdelete_window (window); |
7ab12479 JB |
2293 | } |
2294 | break; | |
2295 | ||
2296 | case GET_LARGEST_WINDOW: | |
20b69789 | 2297 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2298 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2299 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2300 | break; |
177c0ea7 | 2301 | |
c930dfab | 2302 | if (NILP (best_window)) |
118ea242 | 2303 | best_window = window; |
c930dfab GM |
2304 | else |
2305 | { | |
2306 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2307 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2308 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2309 | best_window = window; |
2310 | } | |
7ab12479 JB |
2311 | } |
2312 | break; | |
2313 | ||
2314 | case UNSHOW_BUFFER: | |
118ea242 | 2315 | if (EQ (w->buffer, obj)) |
7ab12479 | 2316 | { |
118ea242 GM |
2317 | Lisp_Object buffer; |
2318 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2319 | |
7ab12479 | 2320 | /* Find another buffer to show in this window. */ |
118ea242 | 2321 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2322 | |
38ab08d1 RS |
2323 | /* If this window is dedicated, and in a frame of its own, |
2324 | kill the frame. */ | |
118ea242 GM |
2325 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2326 | && !NILP (w->dedicated) | |
38ab08d1 | 2327 | && other_visible_frames (f)) |
45945a7b RS |
2328 | { |
2329 | /* Skip the other windows on this frame. | |
2330 | There might be one, the minibuffer! */ | |
118ea242 GM |
2331 | while (CONSP (XCDR (windows)) |
2332 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2333 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2334 | windows = XCDR (windows); | |
177c0ea7 | 2335 | |
45945a7b | 2336 | /* Now we can safely delete the frame. */ |
56f2de10 | 2337 | delete_frame (w->frame, Qnil); |
45945a7b | 2338 | } |
a5731348 SM |
2339 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2340 | { | |
2341 | Lisp_Object window; | |
2342 | XSETWINDOW (window, w); | |
2343 | /* If this window is dedicated and not the only window | |
2344 | in its frame, then kill it. */ | |
2345 | Fdelete_window (window); | |
2346 | } | |
38ab08d1 | 2347 | else |
38ab08d1 RS |
2348 | { |
2349 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2350 | w->dedicated = Qnil; |
949cf20f | 2351 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2352 | if (EQ (window, selected_window)) |
2353 | Fset_buffer (w->buffer); | |
38ab08d1 | 2354 | } |
7ab12479 JB |
2355 | } |
2356 | break; | |
3f8ab7bd | 2357 | |
6b61353c KH |
2358 | case REDISPLAY_BUFFER_WINDOWS: |
2359 | if (EQ (w->buffer, obj)) | |
2360 | { | |
2361 | mark_window_display_accurate (window, 0); | |
2362 | w->update_mode_line = Qt; | |
2363 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2364 | ++update_mode_lines; | |
2365 | best_window = window; | |
2366 | } | |
2367 | break; | |
2368 | ||
3f8ab7bd RS |
2369 | /* Check for a window that has a killed buffer. */ |
2370 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2371 | if (! NILP (w->buffer) |
2372 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2373 | abort (); |
118ea242 | 2374 | break; |
6bbd7a29 GM |
2375 | |
2376 | case WINDOW_LOOP_UNUSED: | |
2377 | break; | |
7ab12479 | 2378 | } |
7ab12479 | 2379 | } |
7ab12479 | 2380 | |
118ea242 | 2381 | UNGCPRO; |
7ab12479 | 2382 | return best_window; |
37962e60 | 2383 | } |
605be8af | 2384 | |
3f8ab7bd RS |
2385 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2386 | ||
233a4a2c | 2387 | void |
971de7fb | 2388 | check_all_windows (void) |
3f8ab7bd RS |
2389 | { |
2390 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2391 | } | |
2392 | ||
a048073e MR |
2393 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
2394 | doc: /* Return WINDOW's use time. | |
2395 | WINDOW defaults to the selected window. The window with the highest use | |
2396 | time is the most recently selected one. The window with the lowest use | |
2397 | time is the least recently selected one. */) | |
2398 | (Lisp_Object window) | |
2399 | { | |
2400 | return decode_window (window)->use_time; | |
2401 | } | |
2402 | ||
3cbb13c8 | 2403 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2404 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2405 | \(LRU means Least Recently Used.) |
2406 | ||
6b61353c | 2407 | Return a full-width window if possible. |
c2755926 | 2408 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2409 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2410 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2411 | If optional argument FRAME is `visible', search all visible frames. |
2412 | If FRAME is 0, search all visible and iconified frames. | |
2413 | If FRAME is t, search all frames. | |
2414 | If FRAME is nil, search only the selected frame. | |
2415 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2416 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 JB |
2417 | { |
2418 | register Lisp_Object w; | |
2419 | /* First try for a window that is full-width */ | |
20b69789 SM |
2420 | w = window_loop (GET_LRU_WINDOW, |
2421 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2422 | 0, frame); | |
265a9e55 | 2423 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2424 | return w; |
2425 | /* If none of them, try the rest */ | |
20b69789 SM |
2426 | return window_loop (GET_LRU_WINDOW, |
2427 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2428 | 0, frame); | |
7ab12479 JB |
2429 | } |
2430 | ||
3cbb13c8 | 2431 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2432 | doc: /* Return the largest window in area. |
c2755926 | 2433 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2434 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2435 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2436 | If optional argument FRAME is `visible', search all visible frames. |
2437 | If FRAME is 0, search all visible and iconified frames. | |
2438 | If FRAME is t, search all frames. | |
2439 | If FRAME is nil, search only the selected frame. | |
2440 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2441 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 | 2442 | { |
20b69789 | 2443 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2444 | frame); |
7ab12479 JB |
2445 | } |
2446 | ||
fec89261 MR |
2447 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
2448 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. | |
2449 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the | |
2450 | current buffer. | |
fdb82f93 PJ |
2451 | If optional argument FRAME is `visible', search all visible frames. |
2452 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2453 | If FRAME is t, search all frames. | |
2454 | If FRAME is nil, search only the selected frame. | |
2455 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2456 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2457 | { |
fec89261 MR |
2458 | Lisp_Object buffer; |
2459 | ||
2460 | if (NILP (buffer_or_name)) | |
2461 | buffer = Fcurrent_buffer (); | |
2462 | else | |
2463 | buffer = Fget_buffer (buffer_or_name); | |
2464 | ||
017b2bad | 2465 | if (BUFFERP (buffer)) |
44fa5b1e | 2466 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2467 | else |
2468 | return Qnil; | |
2469 | } | |
2470 | ||
2471 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2472 | 0, 1, "", |
2473 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2474 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
2475 | This function tries to reduce display jumps by keeping the text |
2476 | previously visible in WINDOW in the same place on the frame. Doing this | |
2477 | depends on the value of (window-start WINDOW), so if calling this | |
2478 | function in a program gives strange scrolling, make sure the | |
2479 | window-start value is reasonable when this function is called. */) | |
5842a27b | 2480 | (Lisp_Object window) |
7ab12479 JB |
2481 | { |
2482 | struct window *w; | |
2452438f | 2483 | EMACS_INT startpos; |
85fe3b5e | 2484 | int top, new_top; |
7ab12479 | 2485 | |
265a9e55 | 2486 | if (NILP (window)) |
7ab12479 JB |
2487 | window = selected_window; |
2488 | else | |
b7826503 | 2489 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2490 | w = XWINDOW (window); |
a2b38b3c | 2491 | |
00d3d838 | 2492 | startpos = marker_position (w->start); |
949cf20f | 2493 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2494 | |
a2b38b3c RS |
2495 | if (MINI_WINDOW_P (w) && top > 0) |
2496 | error ("Can't expand minibuffer to full frame"); | |
2497 | ||
70728a80 | 2498 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2499 | |
00d3d838 KH |
2500 | /* Try to minimize scrolling, by setting the window start to the point |
2501 | will cause the text at the old window start to be at the same place | |
2502 | on the frame. But don't try to do this if the window start is | |
2503 | outside the visible portion (as might happen when the display is | |
2504 | not current, due to typeahead). */ | |
949cf20f | 2505 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2506 | if (new_top != top |
2507 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2508 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2509 | { | |
2510 | struct position pos; | |
2511 | struct buffer *obuf = current_buffer; | |
2512 | ||
2513 | Fset_buffer (w->buffer); | |
2514 | /* This computation used to temporarily move point, but that can | |
2515 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2516 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2517 | |
b73ea88e | 2518 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2519 | w->window_end_valid = Qnil; |
b73ea88e RS |
2520 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2521 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2522 | : Qnil); |
80622eec RS |
2523 | /* We need to do this, so that the window-scroll-functions |
2524 | get called. */ | |
4d047f50 | 2525 | w->optional_new_start = Qt; |
00d3d838 KH |
2526 | |
2527 | set_buffer_internal (obuf); | |
2528 | } | |
5500c422 | 2529 | |
7ab12479 JB |
2530 | return Qnil; |
2531 | } | |
2532 | ||
2533 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
2534 | 0, 2, "bDelete windows on (buffer): ", |
2535 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
2536 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2537 | defaults to the current buffer. | |
2538 | ||
fdb82f93 PJ |
2539 | Optional second argument FRAME controls which frames are affected. |
2540 | If optional argument FRAME is `visible', search all visible frames. | |
2541 | If FRAME is 0, search all visible and iconified frames. | |
2542 | If FRAME is nil, search all frames. | |
2543 | If FRAME is t, search only the selected frame. | |
d653c8cc | 2544 | If FRAME is a frame, search only that frame. |
fec89261 MR |
2545 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
2546 | its frame, that frame is deleted when there are other frames left. */) | |
5842a27b | 2547 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2548 | { |
fec89261 MR |
2549 | Lisp_Object buffer; |
2550 | ||
26f6279d JB |
2551 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2552 | expects. */ | |
c520265e RS |
2553 | if (NILP (frame)) |
2554 | frame = Qt; | |
2555 | else if (EQ (frame, Qt)) | |
2556 | frame = Qnil; | |
26f6279d | 2557 | |
fec89261 MR |
2558 | if (NILP (buffer_or_name)) |
2559 | buffer = Fcurrent_buffer (); | |
2560 | else | |
7ab12479 | 2561 | { |
fec89261 | 2562 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2563 | CHECK_BUFFER (buffer); |
7ab12479 | 2564 | } |
177c0ea7 | 2565 | |
fec89261 MR |
2566 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
2567 | ||
7ab12479 JB |
2568 | return Qnil; |
2569 | } | |
2570 | ||
2571 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 2572 | Sreplace_buffer_in_windows, |
fec89261 MR |
2573 | 0, 1, "bReplace buffer in windows: ", |
2574 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
2575 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2576 | defaults to the current buffer. | |
2577 | ||
2578 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
2579 | deleted. If that window is the only window on its frame, that frame is | |
2580 | deleted too when there are other frames left. If there are no other | |
2581 | frames left, some other buffer is displayed in that window. */) | |
5842a27b | 2582 | (Lisp_Object buffer_or_name) |
fec89261 MR |
2583 | { |
2584 | Lisp_Object buffer; | |
2585 | ||
2586 | if (NILP (buffer_or_name)) | |
2587 | buffer = Fcurrent_buffer (); | |
2588 | else | |
7ab12479 | 2589 | { |
fec89261 | 2590 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2591 | CHECK_BUFFER (buffer); |
7ab12479 | 2592 | } |
fec89261 MR |
2593 | |
2594 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2595 | ||
7ab12479 JB |
2596 | return Qnil; |
2597 | } | |
ff58478b RS |
2598 | |
2599 | /* Replace BUFFER with some other buffer in all windows | |
2600 | of all frames, even those on other keyboards. */ | |
2601 | ||
2602 | void | |
971de7fb | 2603 | replace_buffer_in_all_windows (Lisp_Object buffer) |
ff58478b RS |
2604 | { |
2605 | Lisp_Object tail, frame; | |
2606 | ||
ff58478b RS |
2607 | /* A single call to window_loop won't do the job |
2608 | because it only considers frames on the current keyboard. | |
2609 | So loop manually over frames, and handle each one. */ | |
2610 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2611 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2612 | } |
7ab12479 JB |
2613 | \f |
2614 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2615 | |
2616 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2617 | might crash Emacs. */ | |
5500c422 | 2618 | |
a481b3ea | 2619 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2620 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2621 | |
047aaeb9 MR |
2622 | /* For wp non-zero the total number of columns of window w. Otherwise |
2623 | the total number of lines of w. */ | |
a481b3ea | 2624 | |
047aaeb9 MR |
2625 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2626 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2627 | |
2628 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2629 | minimum allowable size. */ | |
5500c422 | 2630 | |
605be8af | 2631 | void |
971de7fb | 2632 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2633 | { |
628df3bf | 2634 | /* For height, we have to see: |
54b8bcb5 RS |
2635 | how many windows the frame has at minimum (one or two), |
2636 | and whether it has a menu bar or other special stuff at the top. */ | |
2637 | int min_height | |
2638 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2639 | ? MIN_SAFE_WINDOW_HEIGHT | |
2640 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2641 | |
5500c422 GM |
2642 | if (FRAME_TOP_MARGIN (frame) > 0) |
2643 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2644 | |
2645 | if (*rows < min_height) | |
2646 | *rows = min_height; | |
2647 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2648 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2649 | } | |
2650 | ||
233a4a2c GM |
2651 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2652 | check if W's width can be changed, otherwise check W's height. | |
2653 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2654 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2655 | either. */ | |
c1636aa6 | 2656 | |
233a4a2c | 2657 | static int |
971de7fb | 2658 | window_fixed_size_p (struct window *w, int width_p, int check_siblings_p) |
233a4a2c GM |
2659 | { |
2660 | int fixed_p; | |
2661 | struct window *c; | |
177c0ea7 | 2662 | |
233a4a2c GM |
2663 | if (!NILP (w->hchild)) |
2664 | { | |
2665 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2666 | |
233a4a2c GM |
2667 | if (width_p) |
2668 | { | |
047aaeb9 | 2669 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2670 | children are. */ |
2671 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2672 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2673 | fixed_p = c == NULL; | |
2674 | } | |
2675 | else | |
2676 | { | |
047aaeb9 | 2677 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2678 | children is. */ |
2679 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2680 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2681 | fixed_p = c != NULL; | |
2682 | } | |
2683 | } | |
2684 | else if (!NILP (w->vchild)) | |
2685 | { | |
2686 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2687 | |
233a4a2c GM |
2688 | if (width_p) |
2689 | { | |
047aaeb9 | 2690 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2691 | children is. */ |
2692 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2693 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2694 | fixed_p = c != NULL; | |
2695 | } | |
2696 | else | |
2697 | { | |
047aaeb9 | 2698 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2699 | children are. */ |
2700 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2701 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2702 | fixed_p = c == NULL; | |
2703 | } | |
2704 | } | |
2705 | else if (BUFFERP (w->buffer)) | |
2706 | { | |
3df0580e AS |
2707 | struct buffer *old = current_buffer; |
2708 | Lisp_Object val; | |
177c0ea7 | 2709 | |
3df0580e AS |
2710 | current_buffer = XBUFFER (w->buffer); |
2711 | val = find_symbol_value (Qwindow_size_fixed); | |
2712 | current_buffer = old; | |
a34dfd12 | 2713 | |
3df0580e AS |
2714 | fixed_p = 0; |
2715 | if (!EQ (val, Qunbound)) | |
2716 | { | |
2717 | fixed_p = !NILP (val); | |
177c0ea7 | 2718 | |
3df0580e AS |
2719 | if (fixed_p |
2720 | && ((EQ (val, Qheight) && width_p) | |
2721 | || (EQ (val, Qwidth) && !width_p))) | |
2722 | fixed_p = 0; | |
233a4a2c GM |
2723 | } |
2724 | ||
2725 | /* Can't tell if this one is resizable without looking at | |
2726 | siblings. If all siblings are fixed-size this one is too. */ | |
2727 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2728 | { | |
2729 | Lisp_Object child; | |
177c0ea7 | 2730 | |
9beb8baa | 2731 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2732 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2733 | break; | |
2734 | ||
2735 | if (NILP (child)) | |
9beb8baa | 2736 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2737 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2738 | break; | |
2739 | ||
2740 | if (NILP (child)) | |
2741 | fixed_p = 1; | |
2742 | } | |
2743 | } | |
2744 | else | |
2745 | fixed_p = 1; | |
2746 | ||
2747 | return fixed_p; | |
2748 | } | |
177c0ea7 | 2749 | |
047aaeb9 MR |
2750 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2751 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2752 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2753 | return values that won't crash Emacs and don't hide components like | |
2754 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2755 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2756 | |
2757 | static int | |
971de7fb | 2758 | window_min_size_2 (struct window *w, int width_p, int safe_p) |
f1de8c77 | 2759 | { |
047aaeb9 MR |
2760 | /* We should consider buffer-local values of window_min_height and |
2761 | window_min_width here. */ | |
f1de8c77 | 2762 | if (width_p) |
047aaeb9 MR |
2763 | { |
2764 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 2765 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2766 | + WINDOW_SCROLL_BAR_COLS (w)); |
2767 | ||
2768 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2769 | } | |
f1de8c77 | 2770 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2771 | return 1; |
f1de8c77 | 2772 | else |
047aaeb9 MR |
2773 | { |
2774 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2775 | + ((BUFFERP (w->buffer) | |
2776 | && !NILP (XBUFFER (w->buffer)->mode_line_format)) | |
2777 | ? 1 : 0)); | |
f1de8c77 | 2778 | |
047aaeb9 MR |
2779 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2780 | } | |
f1de8c77 | 2781 | } |
233a4a2c | 2782 | |
047aaeb9 MR |
2783 | /* Return minimum size of window W, not taking fixed-width windows into |
2784 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2785 | return the minimum height. SAFE_P non-zero means ignore | |
2786 | window-min-height|width but just return values that won't crash Emacs | |
2787 | and don't hide components like fringes, scrollbars, or modelines. If | |
2788 | W is a combination window, compute the minimum size from the minimum | |
2789 | sizes of W's children. */ | |
233a4a2c GM |
2790 | |
2791 | static int | |
971de7fb | 2792 | window_min_size_1 (struct window *w, int width_p, int safe_p) |
c1636aa6 | 2793 | { |
233a4a2c | 2794 | struct window *c; |
c1636aa6 | 2795 | int size; |
177c0ea7 | 2796 | |
233a4a2c GM |
2797 | if (!NILP (w->hchild)) |
2798 | { | |
047aaeb9 | 2799 | /* W is a horizontal combination. */ |
233a4a2c GM |
2800 | c = XWINDOW (w->hchild); |
2801 | size = 0; | |
177c0ea7 | 2802 | |
233a4a2c GM |
2803 | if (width_p) |
2804 | { | |
047aaeb9 MR |
2805 | /* The minimum width of a horizontal combination is the sum of |
2806 | the minimum widths of its children. */ | |
233a4a2c GM |
2807 | while (c) |
2808 | { | |
047aaeb9 | 2809 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2810 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2811 | } | |
2812 | } | |
2813 | else | |
2814 | { | |
047aaeb9 MR |
2815 | /* The minimum height of a horizontal combination is the |
2816 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2817 | while (c) |
2818 | { | |
047aaeb9 | 2819 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2820 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2821 | } | |
2822 | } | |
2823 | } | |
2824 | else if (!NILP (w->vchild)) | |
2825 | { | |
047aaeb9 | 2826 | /* W is a vertical combination. */ |
233a4a2c GM |
2827 | c = XWINDOW (w->vchild); |
2828 | size = 0; | |
177c0ea7 | 2829 | |
233a4a2c GM |
2830 | if (width_p) |
2831 | { | |
047aaeb9 MR |
2832 | /* The minimum width of a vertical combination is the maximum |
2833 | of the minimum widths of its children. */ | |
233a4a2c GM |
2834 | while (c) |
2835 | { | |
047aaeb9 | 2836 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2837 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2838 | } | |
2839 | } | |
2840 | else | |
2841 | { | |
047aaeb9 MR |
2842 | /* The minimum height of a vertical combination is the sum of |
2843 | the minimum height of its children. */ | |
233a4a2c GM |
2844 | while (c) |
2845 | { | |
047aaeb9 | 2846 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2847 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2848 | } | |
2849 | } | |
2850 | } | |
c1636aa6 | 2851 | else |
047aaeb9 MR |
2852 | /* W is a leaf window. */ |
2853 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2854 | |
2855 | return size; | |
2856 | } | |
2857 | ||
233a4a2c | 2858 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2859 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2860 | return the minimum height. SAFE_P non-zero means ignore | |
2861 | window-min-height|width but just return values that won't crash Emacs | |
2862 | and don't hide components like fringes, scrollbars, or modelines. | |
2863 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2864 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2865 | |
233a4a2c | 2866 | static int |
971de7fb | 2867 | window_min_size (struct window *w, int width_p, int safe_p, int ignore_fixed_p, int *fixed) |
233a4a2c GM |
2868 | { |
2869 | int size, fixed_p; | |
2870 | ||
f984d4fc GM |
2871 | if (ignore_fixed_p) |
2872 | fixed_p = 0; | |
2873 | else | |
2874 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2875 | |
233a4a2c GM |
2876 | if (fixed) |
2877 | *fixed = fixed_p; | |
177c0ea7 | 2878 | |
233a4a2c | 2879 | if (fixed_p) |
047aaeb9 | 2880 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2881 | else |
047aaeb9 | 2882 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2883 | |
233a4a2c GM |
2884 | return size; |
2885 | } | |
2886 | ||
2887 | ||
79fd290e | 2888 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2889 | Return 1 if window width is ok after adjustment; 0 if window |
2890 | is still too narrow. */ | |
2891 | ||
2892 | static int | |
971de7fb | 2893 | adjust_window_margins (struct window *w) |
949cf20f KS |
2894 | { |
2895 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2896 | - WINDOW_FRINGE_COLS (w) | |
2897 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2898 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2899 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2900 | ||
2901 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2902 | return 1; | |
2903 | ||
2904 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2905 | return 0; | |
2906 | ||
2907 | /* Window's text area is too narrow, but reducing the window | |
2908 | margins will fix that. */ | |
2909 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2910 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2911 | { | |
2912 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2913 | w->left_margin_cols = w->right_margin_cols | |
2914 | = make_number (margin_cols/2); | |
2915 | else | |
2916 | w->right_margin_cols = make_number (margin_cols); | |
2917 | } | |
2918 | else | |
2919 | w->left_margin_cols = make_number (margin_cols); | |
2920 | return 1; | |
2921 | } | |
2922 | ||
047aaeb9 MR |
2923 | /* Calculate new sizes for windows in the list FORWARD when their |
2924 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
2925 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
2926 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
2927 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
2928 | shrink columns, otherwise shrink lines. | |
6b61353c | 2929 | |
047aaeb9 MR |
2930 | SAFE_P zero means windows may be sized down to window-min-height |
2931 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
2932 | non-zero means windows may be sized down to their minimum safe sizes | |
2933 | taking into account the space needed to display modelines, fringes, | |
2934 | and scrollbars. | |
6b61353c | 2935 | |
047aaeb9 MR |
2936 | This function returns an allocated array of new sizes that the caller |
2937 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
2938 | zero. A size zero means the window shall be deleted. Array index 0 | |
2939 | refers to the first window in FORWARD, 1 to the second, and so on. | |
2940 | ||
2941 | This function resizes windows proportionally to their size. It also | |
2942 | tries to preserve smaller windows by resizing larger windows before | |
2943 | resizing any window to zero. If resize_proportionally is non-nil for | |
2944 | a specific window, it will attempt to strictly resize that window | |
2945 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 2946 | static int * |
ed3751c8 | 2947 | shrink_windows (int total, int size, int nchildren, int shrinkable, |
dd4c5104 | 2948 | int resize_fixed_p, Lisp_Object forward, int width_p, int safe_p) |
6b61353c KH |
2949 | { |
2950 | int available_resize = 0; | |
047aaeb9 | 2951 | int *new_sizes, *min_sizes; |
6b61353c KH |
2952 | struct window *c; |
2953 | Lisp_Object child; | |
2954 | int smallest = total; | |
2955 | int total_removed = 0; | |
2956 | int total_shrink = total - size; | |
2957 | int i; | |
2958 | ||
2959 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 2960 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
2961 | |
2962 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2963 | { | |
2964 | int child_size; | |
2965 | ||
2966 | c = XWINDOW (child); | |
047aaeb9 | 2967 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 2968 | |
047aaeb9 | 2969 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
2970 | new_sizes[i] = -1; |
2971 | else | |
2972 | { | |
2973 | new_sizes[i] = child_size; | |
047aaeb9 MR |
2974 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
2975 | if (child_size > min_sizes[i] | |
2976 | && NILP (c->resize_proportionally)) | |
2977 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
2978 | } |
2979 | } | |
2980 | /* We might need to shrink some windows to zero. Find the smallest | |
2981 | windows and set them to 0 until we can fulfil the new size. */ | |
2982 | ||
2983 | while (shrinkable > 1 && size + available_resize < total) | |
2984 | { | |
2985 | for (i = 0; i < nchildren; ++i) | |
2986 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2987 | smallest = new_sizes[i]; | |
2988 | ||
2989 | for (i = 0; i < nchildren; ++i) | |
2990 | if (new_sizes[i] == smallest) | |
2991 | { | |
2992 | /* Resize this window down to zero. */ | |
2993 | new_sizes[i] = 0; | |
047aaeb9 MR |
2994 | if (smallest > min_sizes[i]) |
2995 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
2996 | available_resize += smallest; |
2997 | --shrinkable; | |
2998 | total_removed += smallest; | |
2999 | ||
ef614e04 JD |
3000 | /* We don't know what the smallest is now. */ |
3001 | smallest = total; | |
3002 | ||
6b61353c KH |
3003 | /* Out of for, just remove one window at the time and |
3004 | check again if we have enough space. */ | |
3005 | break; | |
3006 | } | |
3007 | } | |
3008 | ||
3009 | /* Now, calculate the new sizes. Try to shrink each window | |
3010 | proportional to its size. */ | |
3011 | for (i = 0; i < nchildren; ++i) | |
3012 | { | |
047aaeb9 | 3013 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 3014 | { |
047aaeb9 MR |
3015 | int to_shrink = total_shrink * new_sizes[i] / total; |
3016 | ||
3017 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
3018 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
3019 | new_sizes[i] -= to_shrink; |
3020 | total_removed += to_shrink; | |
3021 | } | |
3022 | } | |
3023 | ||
3024 | /* Any reminder due to rounding, we just subtract from windows | |
3025 | that are left and still can be shrunk. */ | |
3026 | while (total_shrink > total_removed) | |
3027 | { | |
ef614e04 JD |
3028 | int nonzero_sizes = 0; |
3029 | int nonzero_idx = -1; | |
3030 | ||
3031 | for (i = 0; i < nchildren; ++i) | |
3032 | if (new_sizes[i] > 0) | |
3033 | { | |
3034 | ++nonzero_sizes; | |
3035 | nonzero_idx = i; | |
3036 | } | |
c49a0495 | 3037 | |
6b61353c | 3038 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3039 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3040 | { |
3041 | --new_sizes[i]; | |
3042 | ++total_removed; | |
3043 | ||
3044 | /* Out of for, just shrink one window at the time and | |
3045 | check again if we have enough space. */ | |
3046 | break; | |
3047 | } | |
ef614e04 | 3048 | |
ef614e04 JD |
3049 | /* Special case, only one window left. */ |
3050 | if (nonzero_sizes == 1) | |
3051 | break; | |
3052 | } | |
3053 | ||
3054 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3055 | while (total_shrink < total_removed) | |
3056 | { | |
3057 | for (i = 0; i < nchildren; ++i) | |
3058 | { | |
3059 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3060 | { | |
3061 | ++new_sizes[i]; | |
3062 | --total_removed; | |
3063 | break; | |
3064 | } | |
3065 | } | |
6b61353c KH |
3066 | } |
3067 | ||
047aaeb9 MR |
3068 | xfree (min_sizes); |
3069 | ||
6b61353c KH |
3070 | return new_sizes; |
3071 | } | |
949cf20f | 3072 | |
233a4a2c | 3073 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3074 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3075 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3076 | |
3077 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3078 | they are in series. If LAST_ONLY is 1, change only the last of | |
3079 | WINDOW's children when they are in series. | |
3080 | ||
3081 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3082 | windows that become too small unless NODELETE_P is 1. When |
3083 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3084 | window-min-width when resizing windows but use safe defaults instead. | |
3085 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3086 | |
3087 | static void | |
971de7fb | 3088 | size_window (Lisp_Object window, int size, int width_p, int nodelete_p, int first_only, int last_only) |
7ab12479 | 3089 | { |
233a4a2c GM |
3090 | struct window *w = XWINDOW (window); |
3091 | struct window *c; | |
3092 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3093 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3094 | |
7ae2f10f | 3095 | size = max (0, size); |
177c0ea7 | 3096 | |
047aaeb9 MR |
3097 | /* Delete WINDOW if it's too small. */ |
3098 | if (nodelete_p != 1 && !NILP (w->parent) | |
3099 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3100 | { |
047aaeb9 MR |
3101 | delete_window (window); |
3102 | return; | |
7ab12479 JB |
3103 | } |
3104 | ||
233a4a2c | 3105 | /* Set redisplay hints. */ |
7ae2f10f GM |
3106 | w->last_modified = make_number (0); |
3107 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3108 | windows_or_buffers_changed++; |
7ae2f10f | 3109 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3110 | |
233a4a2c GM |
3111 | if (width_p) |
3112 | { | |
3113 | sideward = &w->vchild; | |
3114 | forward = &w->hchild; | |
949cf20f KS |
3115 | w->total_cols = make_number (size); |
3116 | adjust_window_margins (w); | |
233a4a2c GM |
3117 | } |
3118 | else | |
3119 | { | |
3120 | sideward = &w->hchild; | |
3121 | forward = &w->vchild; | |
949cf20f KS |
3122 | w->total_lines = make_number (size); |
3123 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3124 | } |
3125 | ||
3126 | if (!NILP (*sideward)) | |
7ab12479 | 3127 | { |
5fe0b054 | 3128 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3129 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3130 | { |
233a4a2c GM |
3131 | c = XWINDOW (child); |
3132 | if (width_p) | |
949cf20f | 3133 | c->left_col = w->left_col; |
233a4a2c | 3134 | else |
949cf20f | 3135 | c->top_line = w->top_line; |
5fe0b054 RS |
3136 | size_window (child, size, width_p, nodelete_p, |
3137 | first_only, last_only); | |
7ab12479 JB |
3138 | } |
3139 | } | |
5fe0b054 RS |
3140 | else if (!NILP (*forward) && last_only) |
3141 | { | |
3142 | /* Change the last in a series of siblings. */ | |
3143 | Lisp_Object last_child; | |
3144 | int child_size; | |
3145 | ||
3146 | for (child = *forward; !NILP (child); child = c->next) | |
3147 | { | |
3148 | c = XWINDOW (child); | |
3149 | last_child = child; | |
3150 | } | |
3151 | ||
047aaeb9 MR |
3152 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3153 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3154 | width_p, nodelete_p, first_only, last_only); |
3155 | } | |
3156 | else if (!NILP (*forward) && first_only) | |
3157 | { | |
3158 | /* Change the first in a series of siblings. */ | |
3159 | int child_size; | |
3160 | ||
3161 | child = *forward; | |
3162 | c = XWINDOW (child); | |
3163 | ||
3164 | if (width_p) | |
3165 | c->left_col = w->left_col; | |
3166 | else | |
3167 | c->top_line = w->top_line; | |
3168 | ||
047aaeb9 MR |
3169 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3170 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3171 | width_p, nodelete_p, first_only, last_only); |
3172 | } | |
233a4a2c | 3173 | else if (!NILP (*forward)) |
7ab12479 | 3174 | { |
233a4a2c GM |
3175 | int fixed_size, each, extra, n; |
3176 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3177 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3178 | int *new_sizes = NULL; |
233a4a2c | 3179 | |
5fe0b054 | 3180 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3181 | number of child windows. */ |
8b6d9dc9 | 3182 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3183 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3184 | { |
8b6d9dc9 | 3185 | int child_size; |
177c0ea7 | 3186 | |
7ab12479 | 3187 | c = XWINDOW (child); |
047aaeb9 | 3188 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3189 | total += child_size; |
177c0ea7 | 3190 | |
233a4a2c GM |
3191 | if (window_fixed_size_p (c, width_p, 0)) |
3192 | { | |
8b6d9dc9 | 3193 | fixed_size += child_size; |
233a4a2c GM |
3194 | ++nfixed; |
3195 | } | |
3196 | } | |
7ab12479 | 3197 | |
233a4a2c GM |
3198 | /* If the new size is smaller than fixed_size, or if there |
3199 | aren't any resizable windows, allow resizing fixed-size | |
3200 | windows. */ | |
3201 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3202 | ||
6b61353c | 3203 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3204 | value of extra takes care of rounding errors. */ |
3205 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3206 | if (size < total && n > 1) |
047aaeb9 MR |
3207 | new_sizes = shrink_windows (total, size, nchildren, n, |
3208 | resize_fixed_p, *forward, width_p, | |
3209 | nodelete_p == 2); | |
6b61353c KH |
3210 | else |
3211 | { | |
3212 | each = (size - total) / n; | |
3213 | extra = (size - total) - n * each; | |
3214 | } | |
233a4a2c GM |
3215 | |
3216 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3217 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3218 | last_pos = first_pos; |
6b61353c | 3219 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3220 | { |
3221 | int new_size, old_size; | |
177c0ea7 | 3222 | |
233a4a2c | 3223 | c = XWINDOW (child); |
047aaeb9 | 3224 | old_size = WINDOW_TOTAL_SIZE (c, width_p); |
233a4a2c | 3225 | new_size = old_size; |
7ab12479 | 3226 | |
233a4a2c GM |
3227 | /* The top or left edge position of this child equals the |
3228 | bottom or right edge of its predecessor. */ | |
3229 | if (width_p) | |
949cf20f | 3230 | c->left_col = make_number (last_pos); |
233a4a2c | 3231 | else |
949cf20f | 3232 | c->top_line = make_number (last_pos); |
7ab12479 | 3233 | |
233a4a2c GM |
3234 | /* If this child can be resized, do it. */ |
3235 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3236 | { | |
6b61353c | 3237 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3238 | extra = 0; |
3239 | } | |
177c0ea7 | 3240 | |
047aaeb9 | 3241 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3242 | edge positions to children, so it's not a no-op if we |
3243 | didn't change the child's size. */ | |
5fe0b054 | 3244 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3245 | |
3246 | /* Remember the bottom/right edge position of this child; it | |
3247 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3248 | last_pos += new_size; |
7ab12479 | 3249 | } |
233a4a2c | 3250 | |
70fdbb46 | 3251 | xfree (new_sizes); |
6b61353c | 3252 | |
233a4a2c GM |
3253 | /* We should have covered the parent exactly with child windows. */ |
3254 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3255 | |
7ab12479 | 3256 | /* Now delete any children that became too small. */ |
047aaeb9 | 3257 | if (nodelete_p != 1) |
233a4a2c | 3258 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3259 | { |
233a4a2c | 3260 | int child_size; |
047aaeb9 | 3261 | |
233a4a2c | 3262 | c = XWINDOW (child); |
047aaeb9 MR |
3263 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3264 | size_window (child, child_size, width_p, nodelete_p, | |
3265 | first_only, last_only); | |
7ab12479 JB |
3266 | } |
3267 | } | |
3268 | } | |
3269 | ||
233a4a2c | 3270 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3271 | WINDOW's children. NODELETE zero means windows that have become |
3272 | smaller than window-min-height in the process may be deleted. | |
3273 | NODELETE 1 means never delete windows that become too small in the | |
3274 | process. (The caller should check later and do so if appropriate.) | |
3275 | NODELETE 2 means delete only windows that have become too small to be | |
3276 | displayed correctly. */ | |
7ab12479 | 3277 | |
5e14b1fc | 3278 | void |
971de7fb | 3279 | set_window_height (Lisp_Object window, int height, int nodelete) |
7ab12479 | 3280 | { |
5fe0b054 | 3281 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3282 | } |
7ab12479 | 3283 | |
233a4a2c | 3284 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3285 | WINDOW's children. NODELETE zero means windows that have become |
3286 | smaller than window-min-width in the process may be deleted. | |
3287 | NODELETE 1 means never delete windows that become too small in the | |
3288 | process. (The caller should check later and do so if appropriate.) | |
3289 | NODELETE 2 means delete only windows that have become too small to be | |
3290 | displayed correctly. */ | |
7ab12479 | 3291 | |
233a4a2c | 3292 | void |
971de7fb | 3293 | set_window_width (Lisp_Object window, int width, int nodelete) |
233a4a2c | 3294 | { |
5fe0b054 | 3295 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3296 | } |
233a4a2c | 3297 | |
cdbc7fec KS |
3298 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3299 | ||
3300 | void | |
971de7fb | 3301 | change_window_heights (Lisp_Object window, int n) |
cdbc7fec KS |
3302 | { |
3303 | struct window *w = XWINDOW (window); | |
3304 | ||
949cf20f KS |
3305 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3306 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3307 | |
949cf20f KS |
3308 | if (INTEGERP (w->orig_top_line)) |
3309 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3310 | if (INTEGERP (w->orig_total_lines)) | |
3311 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3312 | |
3313 | /* Handle just the top child in a vertical split. */ | |
3314 | if (!NILP (w->vchild)) | |
3315 | change_window_heights (w->vchild, n); | |
3316 | ||
3317 | /* Adjust all children in a horizontal split. */ | |
3318 | for (window = w->hchild; !NILP (window); window = w->next) | |
3319 | { | |
3320 | w = XWINDOW (window); | |
3321 | change_window_heights (window, n); | |
3322 | } | |
3323 | } | |
3324 | ||
7ab12479 | 3325 | \f |
1d8d96fa | 3326 | int window_select_count; |
7ab12479 | 3327 | |
56613f06 SM |
3328 | EXFUN (Fset_window_fringes, 4); |
3329 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3330 | |
6a44ffb3 SM |
3331 | static void |
3332 | run_funs (Lisp_Object funs) | |
3333 | { | |
3334 | for (; CONSP (funs); funs = XCDR (funs)) | |
3335 | if (!EQ (XCAR (funs), Qt)) | |
3336 | call0 (XCAR (funs)); | |
3337 | } | |
3338 | ||
3339 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3340 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3341 | |
ef264c42 SM |
3342 | void |
3343 | run_window_configuration_change_hook (struct frame *f) | |
3344 | { | |
fec89261 | 3345 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3346 | Lisp_Object frame, global_wcch |
3347 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3348 | XSETFRAME (frame, f); | |
3349 | ||
3350 | if (NILP (Vrun_hooks)) | |
3351 | return; | |
3352 | ||
fec89261 MR |
3353 | if (SELECTED_FRAME () != f) |
3354 | { | |
c6932ecd MR |
3355 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
3356 | Fselect_frame (frame, Qt); | |
fec89261 | 3357 | } |
6a44ffb3 SM |
3358 | |
3359 | /* Use the right buffer. Matters when running the local hooks. */ | |
3360 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3361 | { | |
3362 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3363 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3364 | } | |
3365 | ||
3366 | /* Look for buffer-local values. */ | |
3367 | { | |
3368 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3369 | for (; CONSP (windows); windows = XCDR (windows)) | |
3370 | { | |
3371 | Lisp_Object window = XCAR (windows); | |
3372 | Lisp_Object buffer = Fwindow_buffer (window); | |
3373 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3374 | buffer))) | |
3375 | { | |
3376 | int count = SPECPDL_INDEX (); | |
3377 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3378 | select_window_norecord (window); | |
3379 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3380 | buffer)); | |
fec89261 MR |
3381 | unbind_to (count, Qnil); |
3382 | } | |
6a44ffb3 SM |
3383 | } |
3384 | } | |
047aaeb9 | 3385 | |
6a44ffb3 SM |
3386 | run_funs (global_wcch); |
3387 | unbind_to (count, Qnil); | |
ef264c42 SM |
3388 | } |
3389 | ||
5500c422 GM |
3390 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3391 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3392 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3393 | margins, fringes, and scroll-bar settings of the window are not | |
3394 | reset from the buffer's local settings. */ | |
7ab12479 | 3395 | |
5500c422 | 3396 | void |
971de7fb | 3397 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3398 | { |
3399 | struct window *w = XWINDOW (window); | |
3400 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3401 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3402 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3403 | |
3404 | w->buffer = buffer; | |
86e48436 RS |
3405 | |
3406 | if (EQ (window, selected_window)) | |
5500c422 | 3407 | b->last_selected_window = window; |
beb4e312 | 3408 | |
c49a0495 KS |
3409 | /* Let redisplay errors through. */ |
3410 | b->display_error_modiff = 0; | |
3411 | ||
beb4e312 | 3412 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3413 | if (INTEGERP (b->display_count)) |
3414 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3415 | b->display_time = Fcurrent_time (); | |
86e48436 | 3416 | |
d834a2e9 | 3417 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 3418 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 3419 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 3420 | w->window_end_valid = Qnil; |
c3b232e4 | 3421 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3422 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3423 | vscroll. This case happens for example when called from |
3424 | change_frame_size_1, where we use a dummy call to | |
3425 | Fset_window_buffer on the frame's selected window (and no other) | |
3426 | just in order to run window-configuration-change-hook. | |
3427 | Resetting hscroll and vscroll here is problematic for things like | |
3428 | image-mode and doc-view-mode since it resets the image's position | |
3429 | whenever we resize the frame. */ | |
3430 | w->hscroll = w->min_hscroll = make_number (0); | |
3431 | w->vscroll = 0; | |
3432 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3433 | set_marker_restricted (w->start, | |
3434 | make_number (b->last_window_start), | |
3435 | buffer); | |
3436 | w->start_at_line_beg = Qnil; | |
3437 | w->force_start = Qnil; | |
3438 | XSETFASTINT (w->last_modified, 0); | |
3439 | XSETFASTINT (w->last_overlay_modified, 0); | |
3440 | } | |
3441 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3442 | I doubt it's worth the trouble. */ | |
7ab12479 | 3443 | windows_or_buffers_changed++; |
5b03d3c0 | 3444 | |
da39107c | 3445 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3446 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3447 | because that might itself be a local variable. */ | |
da39107c | 3448 | if (window_initialized) |
5b03d3c0 | 3449 | { |
da39107c | 3450 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3451 | Fset_buffer (buffer); |
3452 | } | |
3453 | ||
a1562258 SM |
3454 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3455 | ||
949cf20f KS |
3456 | if (!keep_margins_p) |
3457 | { | |
3458 | /* Set left and right marginal area width etc. from buffer. */ | |
3459 | ||
79fd290e | 3460 | /* This may call adjust_window_margins three times, so |
949cf20f | 3461 | temporarily disable window margins. */ |
6b61353c KH |
3462 | Lisp_Object save_left = w->left_margin_cols; |
3463 | Lisp_Object save_right = w->right_margin_cols; | |
3464 | ||
949cf20f KS |
3465 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3466 | ||
3467 | Fset_window_fringes (window, | |
3468 | b->left_fringe_width, b->right_fringe_width, | |
3469 | b->fringes_outside_margins); | |
3470 | ||
3471 | Fset_window_scroll_bars (window, | |
3472 | b->scroll_bar_width, | |
3473 | b->vertical_scroll_bar_type, Qnil); | |
3474 | ||
6b61353c KH |
3475 | w->left_margin_cols = save_left; |
3476 | w->right_margin_cols = save_right; | |
3477 | ||
949cf20f KS |
3478 | Fset_window_margins (window, |
3479 | b->left_margin_cols, b->right_margin_cols); | |
3480 | } | |
7ab12479 | 3481 | |
5500c422 GM |
3482 | if (run_hooks_p) |
3483 | { | |
3484 | if (! NILP (Vwindow_scroll_functions)) | |
3485 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3486 | Fmarker_position (w->start)); | |
ef264c42 | 3487 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3488 | } |
543f5fb1 | 3489 | |
5b03d3c0 | 3490 | unbind_to (count, Qnil); |
5500c422 | 3491 | } |
5b03d3c0 | 3492 | |
5500c422 | 3493 | |
949cf20f | 3494 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3495 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3496 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3497 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3498 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3499 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 3500 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 3501 | |
7bfac547 MR |
3502 | This function throws an error when WINDOW is strongly dedicated to its |
3503 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3504 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3505 | |
8fef9de1 MR |
3506 | This function runs `window-scroll-functions' before running |
3507 | `window-configuration-change-hook'. */) | |
5842a27b | 3508 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3509 | { |
d653c8cc | 3510 | register Lisp_Object tem, buffer; |
5500c422 | 3511 | register struct window *w = decode_window (window); |
5500c422 | 3512 | |
bed0c171 | 3513 | XSETWINDOW (window, w); |
d653c8cc | 3514 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3515 | CHECK_BUFFER (buffer); |
5500c422 GM |
3516 | if (NILP (XBUFFER (buffer)->name)) |
3517 | error ("Attempt to display deleted buffer"); | |
3518 | ||
3519 | tem = w->buffer; | |
aac0c6e3 MR |
3520 | if (NILP (tem)) |
3521 | error ("Window is deleted"); | |
3522 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3523 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3524 | { |
f5385255 SM |
3525 | if (!EQ (tem, buffer)) |
3526 | if (EQ (w->dedicated, Qt)) | |
3527 | error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem)->name)); | |
3528 | else | |
3529 | w->dedicated = Qnil; | |
5500c422 GM |
3530 | |
3531 | unshow_buffer (w); | |
3532 | } | |
3533 | ||
949cf20f | 3534 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3535 | return Qnil; |
3536 | } | |
3537 | ||
d653c8cc MR |
3538 | /* Note that selected_window can be nil when this is called from |
3539 | Fset_window_configuration. */ | |
2d0834cc | 3540 | |
14d87dc9 | 3541 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3542 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3543 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3544 | and make WINDOW the frame's selected window. Return WINDOW. |
4e822bdc | 3545 | Optional second arg NORECORD non-nil means do not put this buffer |
c6932ecd MR |
3546 | at the front of the list of recently selected ones and do not |
3547 | make this window the most recently selected one. | |
282f7831 | 3548 | |
4e822bdc MR |
3549 | Note that the main editor command loop selects the buffer of the |
3550 | selected window before each command. */) | |
5842a27b | 3551 | (register Lisp_Object window, Lisp_Object norecord) |
7ab12479 JB |
3552 | { |
3553 | register struct window *w; | |
719eaeb1 | 3554 | register struct window *ow; |
1ae1a37d | 3555 | struct frame *sf; |
7ab12479 | 3556 | |
b7826503 | 3557 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3558 | |
3559 | w = XWINDOW (window); | |
50e88778 | 3560 | w->frozen_window_start_p = 0; |
7ab12479 | 3561 | |
4e822bdc MR |
3562 | if (NILP (norecord)) |
3563 | { | |
3564 | ++window_select_count; | |
3565 | XSETFASTINT (w->use_time, window_select_count); | |
13b5221f | 3566 | record_buffer (w->buffer); |
4e822bdc MR |
3567 | } |
3568 | ||
7ab12479 JB |
3569 | if (EQ (window, selected_window)) |
3570 | return window; | |
3571 | ||
ca2d5566 SM |
3572 | sf = SELECTED_FRAME (); |
3573 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3574 | { | |
3575 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3576 | /* Use this rather than Fhandle_switch_frame | |
3577 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3578 | move around in the state where a minibuffer in a separate | |
3579 | frame is active. */ | |
c6932ecd | 3580 | Fselect_frame (WINDOW_FRAME (w), norecord); |
ca2d5566 SM |
3581 | /* Fselect_frame called us back so we've done all the work already. */ |
3582 | eassert (EQ (window, selected_window)); | |
3583 | return window; | |
3584 | } | |
3585 | else | |
3586 | sf->selected_window = window; | |
3587 | ||
a46c0153 RS |
3588 | /* Store the current buffer's actual point into the |
3589 | old selected window. It belongs to that window, | |
3590 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3591 | if (!NILP (selected_window)) |
3592 | { | |
3593 | ow = XWINDOW (selected_window); | |
3594 | if (! NILP (ow->buffer)) | |
3595 | set_marker_both (ow->pointm, ow->buffer, | |
3596 | BUF_PT (XBUFFER (ow->buffer)), | |
3597 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3598 | } | |
7ab12479 JB |
3599 | |
3600 | selected_window = window; | |
7ab12479 | 3601 | |
7ab12479 JB |
3602 | Fset_buffer (w->buffer); |
3603 | ||
86e48436 RS |
3604 | XBUFFER (w->buffer)->last_selected_window = window; |
3605 | ||
7ab12479 JB |
3606 | /* Go to the point recorded in the window. |
3607 | This is important when the buffer is in more | |
3608 | than one window. It also matters when | |
3609 | redisplay_window has altered point after scrolling, | |
3610 | because it makes the change only in the window. */ | |
3611 | { | |
2452438f | 3612 | register EMACS_INT new_point = marker_position (w->pointm); |
7ab12479 JB |
3613 | if (new_point < BEGV) |
3614 | SET_PT (BEGV); | |
a9c95e08 | 3615 | else if (new_point > ZV) |
7ab12479 JB |
3616 | SET_PT (ZV); |
3617 | else | |
3618 | SET_PT (new_point); | |
3619 | } | |
3620 | ||
3621 | windows_or_buffers_changed++; | |
3622 | return window; | |
3623 | } | |
14d87dc9 SM |
3624 | |
3625 | static Lisp_Object | |
971de7fb | 3626 | select_window_norecord (Lisp_Object window) |
14d87dc9 | 3627 | { |
ab6d1131 MR |
3628 | return WINDOW_LIVE_P (window) |
3629 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 3630 | } |
c6932ecd MR |
3631 | |
3632 | static Lisp_Object | |
971de7fb | 3633 | select_frame_norecord (Lisp_Object frame) |
c6932ecd MR |
3634 | { |
3635 | return FRAME_LIVE_P (XFRAME (frame)) | |
3636 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3637 | } | |
b7354ddf | 3638 | \f |
87478b52 | 3639 | Lisp_Object |
971de7fb | 3640 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3641 | { |
87478b52 | 3642 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3643 | } |
3644 | ||
6b61353c KH |
3645 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3646 | 0, 1, 0, | |
5a1048a5 | 3647 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3648 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3649 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3650 | displaying that buffer. */) |
5842a27b | 3651 | (Lisp_Object object) |
6b61353c KH |
3652 | { |
3653 | if (NILP (object)) | |
3654 | { | |
3655 | windows_or_buffers_changed++; | |
3656 | update_mode_lines++; | |
3657 | return Qt; | |
3658 | } | |
3659 | ||
3660 | if (WINDOWP (object)) | |
3661 | { | |
3662 | struct window *w = XWINDOW (object); | |
3663 | mark_window_display_accurate (object, 0); | |
3664 | w->update_mode_line = Qt; | |
3665 | if (BUFFERP (w->buffer)) | |
3666 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3667 | ++update_mode_lines; | |
3668 | return Qt; | |
3669 | } | |
0cc1039f | 3670 | |
6b61353c KH |
3671 | if (STRINGP (object)) |
3672 | object = Fget_buffer (object); | |
3673 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3674 | { | |
3675 | /* Walk all windows looking for buffer, and force update | |
3676 | of each of those windows. */ | |
3677 | ||
3678 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3679 | return NILP (object) ? Qnil : Qt; | |
3680 | } | |
3681 | ||
3682 | /* If nothing suitable was found, just return. | |
3683 | We could signal an error, but this feature will typically be used | |
3684 | asynchronously in timers or process sentinels, so we don't. */ | |
3685 | return Qnil; | |
3686 | } | |
3687 | ||
3688 | ||
7ab12479 | 3689 | void |
971de7fb | 3690 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3691 | { |
3692 | register struct buffer *old = current_buffer; | |
3693 | register Lisp_Object window; | |
3694 | register struct window *w; | |
3695 | ||
bccd3dd1 RS |
3696 | XBUFFER (buf)->directory = current_buffer->directory; |
3697 | ||
7ab12479 | 3698 | Fset_buffer (buf); |
c6367666 | 3699 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3700 | BEGV = BEG; |
3701 | ZV = Z; | |
3702 | SET_PT (BEG); | |
06be4f85 | 3703 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3704 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3705 | #endif |
7ab12479 JB |
3706 | set_buffer_internal (old); |
3707 | ||
e67a1dea | 3708 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3709 | call1 (Vtemp_buffer_show_function, buf); |
3710 | else | |
3711 | { | |
87478b52 | 3712 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3713 | |
1ae1a37d | 3714 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3715 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3716 | Vminibuf_scroll_window = window; |
3717 | w = XWINDOW (window); | |
d834a2e9 | 3718 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3719 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3720 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3721 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3722 | |
beb4e312 | 3723 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3724 | and its buffer current. */ |
2d0834cc SM |
3725 | |
3726 | if (!NILP (Vrun_hooks) | |
3727 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3728 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3729 | { |
2d0834cc SM |
3730 | int count = SPECPDL_INDEX (); |
3731 | Lisp_Object prev_window, prev_buffer; | |
3732 | prev_window = selected_window; | |
3733 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3734 | |
2d0834cc SM |
3735 | /* Select the window that was chosen, for running the hook. |
3736 | Note: Both Fselect_window and select_window_norecord may | |
3737 | set-buffer to the buffer displayed in the window, | |
3738 | so we need to save the current buffer. --stef */ | |
3739 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3740 | record_unwind_protect (select_window_norecord, prev_window); | |
3741 | Fselect_window (window, Qt); | |
3742 | Fset_buffer (w->buffer); | |
3743 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3744 | unbind_to (count, Qnil); | |
2cccc823 RS |
3745 | } |
3746 | } | |
7ab12479 JB |
3747 | } |
3748 | \f | |
dfcf069d | 3749 | static void |
971de7fb | 3750 | make_dummy_parent (Lisp_Object window) |
7ab12479 | 3751 | { |
cffec418 | 3752 | Lisp_Object new; |
7ab12479 | 3753 | register struct window *o, *p; |
cffec418 | 3754 | int i; |
7ab12479 | 3755 | |
cffec418 | 3756 | o = XWINDOW (window); |
26605be9 | 3757 | p = allocate_window (); |
cffec418 | 3758 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3759 | ((struct Lisp_Vector *) p)->contents[i] |
3760 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3761 | XSETWINDOW (new, p); |
7ab12479 | 3762 | |
2a1893f4 SM |
3763 | ++sequence_number; |
3764 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3765 | |
3766 | /* Put new into window structure in place of window */ | |
3767 | replace_window (window, new); | |
3768 | ||
3769 | o->next = Qnil; | |
3770 | o->prev = Qnil; | |
3771 | o->vchild = Qnil; | |
3772 | o->hchild = Qnil; | |
3773 | o->parent = new; | |
3774 | ||
3775 | p->start = Qnil; | |
3776 | p->pointm = Qnil; | |
3777 | p->buffer = Qnil; | |
3778 | } | |
3779 | ||
3780 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3781 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3782 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
3783 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
3784 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
3785 | window's scroll bar, or the divider column to its right. | |
c2755926 | 3786 | Interactively, all arguments are nil. |
c2755926 | 3787 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
3788 | The upper or leftmost window is the original one, and remains selected |
3789 | if it was selected before. | |
3790 | ||
87527026 | 3791 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
5842a27b | 3792 | (Lisp_Object window, Lisp_Object size, Lisp_Object horizontal) |
7ab12479 JB |
3793 | { |
3794 | register Lisp_Object new; | |
3795 | register struct window *o, *p; | |
c0807608 | 3796 | FRAME_PTR fo; |
77ae0fe3 | 3797 | register int size_int; |
7ab12479 | 3798 | |
265a9e55 | 3799 | if (NILP (window)) |
7ab12479 JB |
3800 | window = selected_window; |
3801 | else | |
b7826503 | 3802 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3803 | |
3804 | o = XWINDOW (window); | |
c0807608 | 3805 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3806 | |
77ae0fe3 | 3807 | if (NILP (size)) |
7ab12479 | 3808 | { |
87527026 | 3809 | if (!NILP (horizontal)) |
c0807608 | 3810 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3811 | the usable space in columns by two. |
3812 | We round up, since the left-hand window may include | |
3813 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3814 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3815 | else |
949cf20f | 3816 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3817 | } |
3818 | else | |
3819 | { | |
b7826503 | 3820 | CHECK_NUMBER (size); |
77ae0fe3 | 3821 | size_int = XINT (size); |
7ab12479 JB |
3822 | } |
3823 | ||
3824 | if (MINI_WINDOW_P (o)) | |
3825 | error ("Attempt to split minibuffer window"); | |
87527026 | 3826 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 3827 | error ("Attempt to split fixed-size window"); |
7ab12479 | 3828 | |
87527026 | 3829 | if (NILP (horizontal)) |
7ab12479 | 3830 | { |
047aaeb9 MR |
3831 | int window_safe_height = window_min_size_2 (o, 0, 0); |
3832 | ||
f1de8c77 | 3833 | if (size_int < window_safe_height) |
77ae0fe3 | 3834 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 3835 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 3836 | error ("Window height %d too small (after splitting)", |
949cf20f | 3837 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3838 | if (NILP (o->parent) |
3839 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3840 | { |
3841 | make_dummy_parent (window); | |
3842 | new = o->parent; | |
3843 | XWINDOW (new)->vchild = window; | |
3844 | } | |
3845 | } | |
3846 | else | |
3847 | { | |
047aaeb9 MR |
3848 | int window_safe_width = window_min_size_2 (o, 1, 0); |
3849 | ||
f1de8c77 | 3850 | if (size_int < window_safe_width) |
77ae0fe3 | 3851 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 3852 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 3853 | error ("Window width %d too small (after splitting)", |
949cf20f | 3854 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3855 | if (NILP (o->parent) |
3856 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3857 | { |
3858 | make_dummy_parent (window); | |
3859 | new = o->parent; | |
3860 | XWINDOW (new)->hchild = window; | |
3861 | } | |
3862 | } | |
3863 | ||
3864 | /* Now we know that window's parent is a vertical combination | |
3865 | if we are dividing vertically, or a horizontal combination | |
3866 | if we are making side-by-side windows */ | |
3867 | ||
3868 | windows_or_buffers_changed++; | |
c0807608 | 3869 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3870 | new = make_window (); |
3871 | p = XWINDOW (new); | |
3872 | ||
44fa5b1e | 3873 | p->frame = o->frame; |
7ab12479 | 3874 | p->next = o->next; |
265a9e55 | 3875 | if (!NILP (p->next)) |
7ab12479 JB |
3876 | XWINDOW (p->next)->prev = new; |
3877 | p->prev = window; | |
3878 | o->next = new; | |
3879 | p->parent = o->parent; | |
3880 | p->buffer = Qt; | |
5500c422 | 3881 | p->window_end_valid = Qnil; |
72af86bd | 3882 | memset (&p->last_cursor, 0, sizeof p->last_cursor); |
7ab12479 | 3883 | |
949cf20f KS |
3884 | /* Duplicate special geometry settings. */ |
3885 | ||
3886 | p->left_margin_cols = o->left_margin_cols; | |
3887 | p->right_margin_cols = o->right_margin_cols; | |
3888 | p->left_fringe_width = o->left_fringe_width; | |
3889 | p->right_fringe_width = o->right_fringe_width; | |
3890 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3891 | p->scroll_bar_width = o->scroll_bar_width; | |
3892 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3893 | ||
44fa5b1e | 3894 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3895 | |
87527026 | 3896 | if (!NILP (horizontal)) |
7ab12479 | 3897 | { |
949cf20f KS |
3898 | p->total_lines = o->total_lines; |
3899 | p->top_line = o->top_line; | |
3900 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3901 | XSETFASTINT (o->total_cols, size_int); | |
3902 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3903 | adjust_window_margins (p); | |
3904 | adjust_window_margins (o); | |
7ab12479 JB |
3905 | } |
3906 | else | |
3907 | { | |
949cf20f KS |
3908 | p->left_col = o->left_col; |
3909 | p->total_cols = o->total_cols; | |
3910 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3911 | XSETFASTINT (o->total_lines, size_int); | |
3912 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3913 | } |
3914 | ||
5500c422 GM |
3915 | /* Adjust glyph matrices. */ |
3916 | adjust_glyphs (fo); | |
949cf20f KS |
3917 | |
3918 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3919 | return new; |
3920 | } | |
3921 | \f | |
56ebfae2 | 3922 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
3923 | doc: /* Make selected window SIZE lines taller. |
3924 | Interactively, if no argument is given, make the selected window one | |
3925 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
3926 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
3927 | -SIZE lines or columns. Return nil. | |
3928 | ||
3929 | This function can delete windows if they get too small. The size of | |
3930 | fixed size windows is not altered by this function. */) | |
5842a27b | 3931 | (Lisp_Object size, Lisp_Object horizontal) |
7ab12479 | 3932 | { |
aac0c6e3 MR |
3933 | CHECK_NUMBER (size); |
3934 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3935 | |
eeca6f6f | 3936 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3937 | |
7ab12479 JB |
3938 | return Qnil; |
3939 | } | |
3940 | ||
56ebfae2 | 3941 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
3942 | doc: /* Make selected window SIZE lines smaller. |
3943 | Interactively, if no argument is given, make the selected window one | |
3944 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
3945 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
3946 | window by -SIZE lines or columns. Return nil. | |
3947 | ||
3948 | This function can delete windows if they get too small. The size of | |
3949 | fixed size windows is not altered by this function. */) | |
5842a27b | 3950 | (Lisp_Object size, Lisp_Object horizontal) |
aac0c6e3 MR |
3951 | { |
3952 | CHECK_NUMBER (size); | |
3953 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3954 | |
eeca6f6f | 3955 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3956 | |
7ab12479 JB |
3957 | return Qnil; |
3958 | } | |
3959 | ||
3960 | int | |
971de7fb | 3961 | window_height (Lisp_Object window) |
7ab12479 JB |
3962 | { |
3963 | register struct window *p = XWINDOW (window); | |
949cf20f | 3964 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3965 | } |
3966 | ||
3967 | int | |
971de7fb | 3968 | window_width (Lisp_Object window) |
7ab12479 JB |
3969 | { |
3970 | register struct window *p = XWINDOW (window); | |
949cf20f | 3971 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3972 | } |
3973 | ||
177c0ea7 | 3974 | |
7ab12479 | 3975 | #define CURBEG(w) \ |
5afc696a | 3976 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3977 | |
3978 | #define CURSIZE(w) \ | |
5afc696a | 3979 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 3980 | |
233a4a2c | 3981 | |
047aaeb9 MR |
3982 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
3983 | horizontally; zero means do it vertically. | |
f95284d2 | 3984 | |
5afc696a | 3985 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 3986 | request. If they become too small in the process, they may be |
56ebfae2 | 3987 | deleted. */ |
7ab12479 | 3988 | |
f984d4fc | 3989 | static void |
971de7fb | 3990 | enlarge_window (Lisp_Object window, int delta, int horiz_flag) |
7ab12479 | 3991 | { |
86c8e823 | 3992 | Lisp_Object parent, next, prev; |
233a4a2c | 3993 | struct window *p; |
3578db3c KR |
3994 | Lisp_Object *sizep; |
3995 | int maximum; | |
f57e2426 | 3996 | int (*sizefun) (Lisp_Object) |
5afc696a | 3997 | = horiz_flag ? window_width : window_height; |
f57e2426 | 3998 | void (*setsizefun) (Lisp_Object, int, int) |
5afc696a | 3999 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4000 | |
233a4a2c | 4001 | /* Give up if this window cannot be resized. */ |
5afc696a | 4002 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4003 | error ("Window is not resizable"); |
4004 | ||
4005 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4006 | while (1) |
4007 | { | |
4008 | p = XWINDOW (window); | |
4009 | parent = p->parent; | |
177c0ea7 | 4010 | |
265a9e55 | 4011 | if (NILP (parent)) |
7ab12479 | 4012 | { |
5afc696a | 4013 | if (horiz_flag) |
7ab12479 JB |
4014 | error ("No other window to side of this one"); |
4015 | break; | |
4016 | } | |
177c0ea7 | 4017 | |
5afc696a | 4018 | if (horiz_flag |
233a4a2c | 4019 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4020 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4021 | break; |
177c0ea7 | 4022 | |
7ab12479 JB |
4023 | window = parent; |
4024 | } | |
4025 | ||
05c2896a | 4026 | sizep = &CURSIZE (window); |
7ab12479 | 4027 | |
7ab12479 JB |
4028 | { |
4029 | register int maxdelta; | |
7ab12479 | 4030 | |
f95284d2 RS |
4031 | /* Compute the maximum size increment this window can have. */ |
4032 | ||
56ebfae2 RS |
4033 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4034 | /* This is a main window followed by a minibuffer. */ | |
4035 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4036 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4037 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4038 | /* This is a minibuffer following a main window. */ |
4039 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4040 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4041 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4042 | /* This is a frame with only one window, a minibuffer-only |
4043 | or a minibufferless frame. */ | |
4044 | : (delta = 0)); | |
7ab12479 JB |
4045 | |
4046 | if (delta > maxdelta) | |
4047 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4048 | the full frame, or make the only window aside from the |
4049 | minibuffer the full frame. */ | |
7ab12479 | 4050 | delta = maxdelta; |
6b54027b | 4051 | } |
d5783c40 | 4052 | |
047aaeb9 MR |
4053 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4054 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4055 | { |
543f5fb1 | 4056 | delete_window (window); |
d5783c40 | 4057 | return; |
6b54027b RS |
4058 | } |
4059 | ||
4060 | if (delta == 0) | |
4061 | return; | |
7ab12479 | 4062 | |
f95284d2 | 4063 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4064 | maximum = 0; |
9beb8baa | 4065 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4066 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4067 | horiz_flag, 0, 0, 0); |
9beb8baa | 4068 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4069 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4070 | horiz_flag, 0, 0, 0); |
db98a733 | 4071 | |
f95284d2 | 4072 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4073 | if (delta <= maximum) |
7ab12479 | 4074 | { |
db98a733 RS |
4075 | Lisp_Object first_unaffected; |
4076 | Lisp_Object first_affected; | |
233a4a2c | 4077 | int fixed_p; |
db98a733 RS |
4078 | |
4079 | next = p->next; | |
4080 | prev = p->prev; | |
4081 | first_affected = window; | |
4082 | /* Look at one sibling at a time, | |
4083 | moving away from this window in both directions alternately, | |
4084 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4085 | while (delta != 0 |
56ebfae2 | 4086 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4087 | { |
db98a733 RS |
4088 | if (! NILP (next)) |
4089 | { | |
c1636aa6 | 4090 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4091 | - window_min_size (XWINDOW (next), horiz_flag, |
4092 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4093 | if (!fixed_p) |
4094 | { | |
4095 | if (this_one > delta) | |
4096 | this_one = delta; | |
177c0ea7 | 4097 | |
233a4a2c | 4098 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4099 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4100 | |
233a4a2c GM |
4101 | delta -= this_one; |
4102 | } | |
177c0ea7 | 4103 | |
db98a733 RS |
4104 | next = XWINDOW (next)->next; |
4105 | } | |
177c0ea7 | 4106 | |
db98a733 RS |
4107 | if (delta == 0) |
4108 | break; | |
177c0ea7 | 4109 | |
56ebfae2 | 4110 | if (! NILP (prev)) |
db98a733 | 4111 | { |
c1636aa6 | 4112 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4113 | - window_min_size (XWINDOW (prev), horiz_flag, |
4114 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4115 | if (!fixed_p) |
4116 | { | |
4117 | if (this_one > delta) | |
4118 | this_one = delta; | |
177c0ea7 | 4119 | |
233a4a2c | 4120 | first_affected = prev; |
177c0ea7 | 4121 | |
233a4a2c | 4122 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4123 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4124 | |
4125 | delta -= this_one; | |
4126 | } | |
177c0ea7 | 4127 | |
db98a733 RS |
4128 | prev = XWINDOW (prev)->prev; |
4129 | } | |
4130 | } | |
4131 | ||
233a4a2c GM |
4132 | xassert (delta == 0); |
4133 | ||
db98a733 RS |
4134 | /* Now recalculate the edge positions of all the windows affected, |
4135 | based on the new sizes. */ | |
4136 | first_unaffected = next; | |
4137 | prev = first_affected; | |
4138 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4139 | prev = next, next = XWINDOW (next)->next) | |
4140 | { | |
3578db3c | 4141 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4142 | /* This does not change size of NEXT, |
4143 | but it propagates the new top edge to its children */ | |
4144 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4145 | } | |
7ab12479 JB |
4146 | } |
4147 | else | |
4148 | { | |
4149 | register int delta1; | |
4150 | register int opht = (*sizefun) (parent); | |
4151 | ||
3578db3c | 4152 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4153 | { |
4154 | /* If trying to grow this window to or beyond size of the parent, | |
4155 | just delete all the sibling windows. */ | |
dc1ab1ee | 4156 | Lisp_Object start, tem, next; |
daf516d3 | 4157 | |
dc1ab1ee RS |
4158 | start = XWINDOW (parent)->vchild; |
4159 | if (NILP (start)) | |
4160 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4161 | |
dc1ab1ee RS |
4162 | /* Delete any siblings that come after WINDOW. */ |
4163 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4164 | while (! NILP (tem)) |
4165 | { | |
4166 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4167 | delete_window (tem); |
4168 | tem = next; | |
4169 | } | |
4170 | ||
4171 | /* Delete any siblings that come after WINDOW. | |
4172 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4173 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4174 | tem = start; |
4175 | while (! EQ (tem, window)) | |
4176 | { | |
4177 | next = XWINDOW (tem)->next; | |
4178 | delete_window (tem); | |
daf516d3 RS |
4179 | tem = next; |
4180 | } | |
4181 | } | |
7ab12479 | 4182 | else |
233a4a2c GM |
4183 | { |
4184 | /* Otherwise, make delta1 just right so that if we add | |
4185 | delta1 lines to this window and to the parent, and then | |
4186 | shrink the parent back to its original size, the new | |
4187 | proportional size of this window will increase by delta. | |
4188 | ||
4189 | The function size_window will compute the new height h' | |
4190 | of the window from delta1 as: | |
177c0ea7 | 4191 | |
233a4a2c GM |
4192 | e = delta1/n |
4193 | x = delta1 - delta1/n * n for the 1st resizable child | |
4194 | h' = h + e + x | |
4195 | ||
4196 | where n is the number of children that can be resized. | |
4197 | We can ignore x by choosing a delta1 that is a multiple of | |
4198 | n. We want the height of this window to come out as | |
177c0ea7 | 4199 | |
233a4a2c GM |
4200 | h' = h + delta |
4201 | ||
4202 | So, delta1 must be | |
177c0ea7 | 4203 | |
233a4a2c GM |
4204 | h + e = h + delta |
4205 | delta1/n = delta | |
4206 | delta1 = n * delta. | |
4207 | ||
a5731348 | 4208 | The number of children n equals the number of resizable |
233a4a2c | 4209 | children of this window + 1 because we know window itself |
04bf5b65 | 4210 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4211 | |
4212 | This reasoning is not correct when other windows become too | |
4213 | small and shrink_windows refuses to delete them. Below we | |
4214 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4215 | |
4216 | struct window *w = XWINDOW (window); | |
4217 | Lisp_Object s; | |
4218 | int n = 1; | |
4219 | ||
9beb8baa | 4220 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4221 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4222 | ++n; |
9beb8baa | 4223 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4224 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4225 | ++n; |
4226 | ||
4227 | delta1 = n * delta; | |
7ab12479 | 4228 | |
daf516d3 RS |
4229 | /* Add delta1 lines or columns to this window, and to the parent, |
4230 | keeping things consistent while not affecting siblings. */ | |
4231 | XSETINT (CURSIZE (parent), opht + delta1); | |
4232 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4233 | ||
4234 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4235 | shrinking this window and siblings proportionately. This |
4236 | brings parent back to correct size. Delta1 was calculated | |
4237 | so this makes this window the desired size, taking it all | |
4238 | out of the siblings. | |
4239 | ||
4240 | Temporarily set resize_proportionally to Qt to assure that, | |
4241 | if necessary, shrink_windows deletes smaller windows rather | |
4242 | than shrink this window. */ | |
4243 | w->resize_proportionally = Qt; | |
daf516d3 | 4244 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4245 | w->resize_proportionally = Qnil; |
daf516d3 | 4246 | } |
7ab12479 JB |
4247 | } |
4248 | ||
d834a2e9 | 4249 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4250 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4251 | |
4252 | /* Adjust glyph matrices. */ | |
4253 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4254 | } |
c1636aa6 | 4255 | |
0d384044 RS |
4256 | |
4257 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4258 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4259 | zero means adjust the height, moving the bottom edge. | |
4260 | ||
4261 | Following siblings of the selected window are resized to fulfill | |
4262 | the size request. If they become too small in the process, they | |
4263 | are not deleted; instead, we signal an error. */ | |
4264 | ||
4265 | static void | |
971de7fb | 4266 | adjust_window_trailing_edge (Lisp_Object window, int delta, int horiz_flag) |
0d384044 RS |
4267 | { |
4268 | Lisp_Object parent, child; | |
4269 | struct window *p; | |
4270 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4271 | int delcount = window_deletion_count; | |
4272 | ||
0d384044 RS |
4273 | CHECK_WINDOW (window); |
4274 | ||
4275 | /* Give up if this window cannot be resized. */ | |
4276 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4277 | error ("Window is not resizable"); | |
4278 | ||
4279 | while (1) | |
4280 | { | |
bd99e242 RS |
4281 | Lisp_Object first_parallel = Qnil; |
4282 | ||
c32de52a | 4283 | if (NILP (window)) |
0d384044 | 4284 | { |
5fe0b054 RS |
4285 | /* This happens if WINDOW on the previous iteration was |
4286 | at top level of the window tree. */ | |
0d384044 | 4287 | Fset_window_configuration (old_config); |
c32de52a | 4288 | error ("Specified window edge is fixed"); |
0d384044 RS |
4289 | } |
4290 | ||
c32de52a RS |
4291 | p = XWINDOW (window); |
4292 | parent = p->parent; | |
4293 | ||
bd99e242 RS |
4294 | /* See if this level has windows in parallel in the specified |
4295 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4296 | if (horiz_flag) | |
4297 | { | |
4298 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4299 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4300 | else if (NILP (parent) && !NILP (p->next)) |
4301 | { | |
4302 | /* Handle the vertical chain of main window and minibuffer | |
4303 | which has no parent. */ | |
4304 | first_parallel = window; | |
4305 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4306 | first_parallel = XWINDOW (first_parallel)->prev; | |
4307 | } | |
bd99e242 RS |
4308 | } |
4309 | else | |
4310 | { | |
4311 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4312 | first_parallel = XWINDOW (parent)->hchild; | |
4313 | } | |
4314 | ||
c32de52a | 4315 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4316 | and this window is the last one, and there is no higher level, |
4317 | its trailing edge is fixed. */ | |
4318 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4319 | && NILP (parent)) | |
c32de52a RS |
4320 | { |
4321 | Fset_window_configuration (old_config); | |
4322 | error ("Specified window edge is fixed"); | |
4323 | } | |
4324 | ||
0d384044 RS |
4325 | /* Don't make this window too small. */ |
4326 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4327 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4328 | { |
4329 | Fset_window_configuration (old_config); | |
4330 | error ("Cannot adjust window size as specified"); | |
4331 | } | |
4332 | ||
4333 | /* Clear out some redisplay caches. */ | |
4334 | XSETFASTINT (p->last_modified, 0); | |
4335 | XSETFASTINT (p->last_overlay_modified, 0); | |
4336 | ||
4337 | /* Adjust this window's edge. */ | |
4338 | XSETINT (CURSIZE (window), | |
4339 | XINT (CURSIZE (window)) + delta); | |
4340 | ||
4341 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4342 | make them smaller, and exit the loop. |
4343 | ||
0d384044 RS |
4344 | (If we reach the top of the tree and can never do this, |
4345 | we will fail and report an error, above.) */ | |
bd99e242 | 4346 | if (NILP (first_parallel)) |
0d384044 | 4347 | { |
c32de52a | 4348 | if (!NILP (p->next)) |
0d384044 | 4349 | { |
e99c7521 JD |
4350 | /* This may happen for the minibuffer. In that case |
4351 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4352 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4353 | { |
4354 | Fset_window_configuration (old_config); | |
4355 | error ("Cannot adjust window size as specified"); | |
4356 | } | |
4357 | ||
0d384044 RS |
4358 | XSETINT (CURBEG (p->next), |
4359 | XINT (CURBEG (p->next)) + delta); | |
4360 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4361 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4362 | break; |
4363 | } | |
4364 | } | |
4365 | else | |
4366 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4367 | Change the size of the other siblings. */ | |
bd99e242 | 4368 | for (child = first_parallel; |
0d384044 RS |
4369 | ! NILP (child); |
4370 | child = XWINDOW (child)->next) | |
4371 | if (! EQ (child, window)) | |
4372 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4373 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4374 | |
4375 | window = parent; | |
4376 | } | |
4377 | ||
4378 | /* If we made a window so small it got deleted, | |
4379 | we failed. Report failure. */ | |
4380 | if (delcount != window_deletion_count) | |
4381 | { | |
4382 | Fset_window_configuration (old_config); | |
4383 | error ("Cannot adjust window size as specified"); | |
4384 | } | |
4385 | ||
4386 | /* Adjust glyph matrices. */ | |
4387 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4388 | } | |
4389 | ||
7ab12479 JB |
4390 | #undef CURBEG |
4391 | #undef CURSIZE | |
4392 | ||
0d384044 RS |
4393 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4394 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4395 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4396 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4397 | Otherwise, adjust the height, moving the bottom edge. |
4398 | ||
4399 | Following siblings of the selected window are resized to fulfill | |
4400 | the size request. If they become too small in the process, they | |
4401 | are not deleted; instead, we signal an error. */) | |
5842a27b | 4402 | (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal) |
0d384044 RS |
4403 | { |
4404 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4405 | if (NILP (window)) |
4406 | window = selected_window; | |
0d384044 RS |
4407 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4408 | ||
eeca6f6f SM |
4409 | run_window_configuration_change_hook |
4410 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4411 | |
4412 | return Qnil; | |
4413 | } | |
4414 | ||
5500c422 | 4415 | |
f984d4fc GM |
4416 | \f |
4417 | /*********************************************************************** | |
4418 | Resizing Mini-Windows | |
4419 | ***********************************************************************/ | |
4420 | ||
f57e2426 | 4421 | static void shrink_window_lowest_first (struct window *, int); |
f984d4fc | 4422 | |
43b4a21f GM |
4423 | enum save_restore_action |
4424 | { | |
4425 | CHECK_ORIG_SIZES, | |
4426 | SAVE_ORIG_SIZES, | |
4427 | RESTORE_ORIG_SIZES | |
4428 | }; | |
4429 | ||
f57e2426 J |
4430 | static int save_restore_orig_size (struct window *, |
4431 | enum save_restore_action); | |
f984d4fc GM |
4432 | |
4433 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4434 | from lowest windows first. */ | |
4435 | ||
4436 | static void | |
971de7fb | 4437 | shrink_window_lowest_first (struct window *w, int height) |
f984d4fc GM |
4438 | { |
4439 | struct window *c; | |
4440 | Lisp_Object child; | |
4441 | int old_height; | |
4442 | ||
4443 | xassert (!MINI_WINDOW_P (w)); | |
4444 | ||
4445 | /* Set redisplay hints. */ | |
4446 | XSETFASTINT (w->last_modified, 0); | |
4447 | XSETFASTINT (w->last_overlay_modified, 0); | |
4448 | windows_or_buffers_changed++; | |
4449 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4450 | ||
949cf20f KS |
4451 | old_height = XFASTINT (w->total_lines); |
4452 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4453 | |
4454 | if (!NILP (w->hchild)) | |
4455 | { | |
4456 | for (child = w->hchild; !NILP (child); child = c->next) | |
4457 | { | |
4458 | c = XWINDOW (child); | |
949cf20f | 4459 | c->top_line = w->top_line; |
f984d4fc GM |
4460 | shrink_window_lowest_first (c, height); |
4461 | } | |
4462 | } | |
4463 | else if (!NILP (w->vchild)) | |
4464 | { | |
4465 | Lisp_Object last_child; | |
4466 | int delta = old_height - height; | |
4467 | int last_top; | |
6bbd7a29 GM |
4468 | |
4469 | last_child = Qnil; | |
177c0ea7 | 4470 | |
f984d4fc GM |
4471 | /* Find the last child. We are taking space from lowest windows |
4472 | first, so we iterate over children from the last child | |
4473 | backwards. */ | |
9beb8baa | 4474 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4475 | last_child = child; |
4476 | ||
047aaeb9 | 4477 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4478 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4479 | { | |
4480 | int this_one; | |
177c0ea7 | 4481 | |
f984d4fc | 4482 | c = XWINDOW (child); |
047aaeb9 | 4483 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4484 | |
4485 | if (this_one > delta) | |
4486 | this_one = delta; | |
4487 | ||
949cf20f | 4488 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4489 | delta -= this_one; |
4490 | } | |
4491 | ||
4492 | /* Compute new positions. */ | |
949cf20f | 4493 | last_top = XINT (w->top_line); |
f984d4fc GM |
4494 | for (child = w->vchild; !NILP (child); child = c->next) |
4495 | { | |
4496 | c = XWINDOW (child); | |
949cf20f KS |
4497 | c->top_line = make_number (last_top); |
4498 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4499 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4500 | } |
4501 | } | |
4502 | } | |
4503 | ||
4504 | ||
43b4a21f GM |
4505 | /* Save, restore, or check positions and sizes in the window tree |
4506 | rooted at W. ACTION says what to do. | |
f984d4fc | 4507 | |
949cf20f KS |
4508 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4509 | orig_total_lines members are valid for all windows in the window | |
4510 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4511 | |
43b4a21f | 4512 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4513 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4514 | |
949cf20f KS |
4515 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4516 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4517 | |
4518 | static int | |
971de7fb | 4519 | save_restore_orig_size (struct window *w, enum save_restore_action action) |
f984d4fc | 4520 | { |
43b4a21f GM |
4521 | int success_p = 1; |
4522 | ||
f984d4fc GM |
4523 | while (w) |
4524 | { | |
4525 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4526 | { |
4527 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4528 | success_p = 0; | |
4529 | } | |
f984d4fc | 4530 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4531 | { |
4532 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4533 | success_p = 0; | |
4534 | } | |
177c0ea7 | 4535 | |
43b4a21f | 4536 | switch (action) |
f984d4fc | 4537 | { |
43b4a21f | 4538 | case CHECK_ORIG_SIZES: |
949cf20f | 4539 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4540 | return 0; |
4541 | break; | |
4542 | ||
4543 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4544 | w->orig_top_line = w->top_line; |
4545 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4546 | XSETFASTINT (w->last_modified, 0); |
4547 | XSETFASTINT (w->last_overlay_modified, 0); | |
4548 | break; | |
4549 | ||
4550 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4551 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4552 | w->top_line = w->orig_top_line; | |
4553 | w->total_lines = w->orig_total_lines; | |
4554 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4555 | XSETFASTINT (w->last_modified, 0); |
4556 | XSETFASTINT (w->last_overlay_modified, 0); | |
4557 | break; | |
4558 | ||
4559 | default: | |
4560 | abort (); | |
f984d4fc | 4561 | } |
43b4a21f | 4562 | |
f984d4fc GM |
4563 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4564 | } | |
43b4a21f GM |
4565 | |
4566 | return success_p; | |
f984d4fc GM |
4567 | } |
4568 | ||
4569 | ||
4570 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4571 | without deleting other windows. */ | |
4572 | ||
4573 | void | |
971de7fb | 4574 | grow_mini_window (struct window *w, int delta) |
f984d4fc GM |
4575 | { |
4576 | struct frame *f = XFRAME (w->frame); | |
4577 | struct window *root; | |
177c0ea7 | 4578 | |
f984d4fc | 4579 | xassert (MINI_WINDOW_P (w)); |
522d013a JB |
4580 | /* Commenting out the following assertion goes against the stated interface |
4581 | of the function, but it currently does not seem to do anything useful. | |
4582 | See discussion of this issue in the thread for bug#4534. | |
4583 | xassert (delta >= 0); */ | |
177c0ea7 | 4584 | |
f984d4fc GM |
4585 | /* Compute how much we can enlarge the mini-window without deleting |
4586 | other windows. */ | |
4587 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
522d013a | 4588 | if (delta > 0) |
f984d4fc | 4589 | { |
047aaeb9 | 4590 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4591 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4592 | /* Note that the root window may already be smaller than |
eafa3196 | 4593 | min_height. */ |
949cf20f | 4594 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4595 | } |
177c0ea7 | 4596 | |
f984d4fc GM |
4597 | if (delta) |
4598 | { | |
4599 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4600 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4601 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4602 | |
4603 | /* Shrink other windows. */ | |
949cf20f | 4604 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4605 | |
4606 | /* Grow the mini-window. */ | |
949cf20f KS |
4607 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4608 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4609 | XSETFASTINT (w->last_modified, 0); |
4610 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4611 | |
f984d4fc GM |
4612 | adjust_glyphs (f); |
4613 | } | |
4614 | } | |
4615 | ||
4616 | ||
86c8e823 GM |
4617 | /* Shrink mini-window W. If there is recorded info about window sizes |
4618 | before a call to grow_mini_window, restore recorded window sizes. | |
4619 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4620 | line. */ | |
f984d4fc GM |
4621 | |
4622 | void | |
971de7fb | 4623 | shrink_mini_window (struct window *w) |
f984d4fc GM |
4624 | { |
4625 | struct frame *f = XFRAME (w->frame); | |
4626 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4627 | ||
43b4a21f | 4628 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4629 | { |
43b4a21f | 4630 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4631 | adjust_glyphs (f); |
4632 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4633 | windows_or_buffers_changed = 1; | |
4634 | } | |
949cf20f | 4635 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4636 | { |
0130fe1a GM |
4637 | /* Distribute the additional lines of the mini-window |
4638 | among the other windows. */ | |
86c8e823 GM |
4639 | Lisp_Object window; |
4640 | XSETWINDOW (window, w); | |
56ebfae2 | 4641 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4642 | } |
f984d4fc GM |
4643 | } |
4644 | ||
4645 | ||
4646 | \f | |
5500c422 GM |
4647 | /* Mark window cursors off for all windows in the window tree rooted |
4648 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4649 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4650 | the frame are cleared. */ | |
4651 | ||
4652 | void | |
971de7fb | 4653 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4654 | { |
4655 | while (w) | |
4656 | { | |
4657 | if (!NILP (w->hchild)) | |
4658 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4659 | else if (!NILP (w->vchild)) | |
4660 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4661 | else | |
4662 | w->phys_cursor_on_p = 0; | |
4663 | ||
4664 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4665 | } | |
4666 | } | |
4667 | ||
4668 | ||
e9c195b1 | 4669 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4670 | |
4671 | int | |
971de7fb | 4672 | window_internal_height (struct window *w) |
7ab12479 | 4673 | { |
949cf20f | 4674 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4675 | |
e9c195b1 GM |
4676 | if (!MINI_WINDOW_P (w)) |
4677 | { | |
4678 | if (!NILP (w->parent) | |
4679 | || !NILP (w->vchild) | |
4680 | || !NILP (w->hchild) | |
4681 | || !NILP (w->next) | |
4682 | || !NILP (w->prev) | |
4683 | || WINDOW_WANTS_MODELINE_P (w)) | |
4684 | --ht; | |
7ab12479 | 4685 | |
e9c195b1 GM |
4686 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4687 | --ht; | |
4688 | } | |
7ab12479 JB |
4689 | |
4690 | return ht; | |
4691 | } | |
4692 | ||
535e0b8e JB |
4693 | |
4694 | /* Return the number of columns in W. | |
a3c87d4e | 4695 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4696 | separating W from the sibling to its right. */ |
5500c422 | 4697 | |
535e0b8e | 4698 | int |
971de7fb | 4699 | window_box_text_cols (struct window *w) |
535e0b8e | 4700 | { |
5500c422 | 4701 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4702 | int width = XINT (w->total_cols); |
535e0b8e | 4703 | |
949cf20f | 4704 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4705 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4706 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4707 | else if (!FRAME_WINDOW_P (f) | |
4708 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4709 | /* The column of `|' characters separating side-by-side windows |
4710 | occupies one column only. */ | |
4711 | width -= 1; | |
4712 | ||
5500c422 | 4713 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4714 | /* On window-systems, fringes and display margins cannot be |
4715 | used for normal text. */ | |
4716 | width -= (WINDOW_FRINGE_COLS (w) | |
4717 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4718 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4719 | |
4720 | return width; | |
535e0b8e JB |
4721 | } |
4722 | ||
5500c422 GM |
4723 | \f |
4724 | /************************************************************************ | |
4725 | Window Scrolling | |
4726 | ***********************************************************************/ | |
535e0b8e | 4727 | |
5500c422 | 4728 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4729 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4730 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4731 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4732 | means don't signal an error if we try to move over BEGV or ZV, | |
4733 | respectively. */ | |
7ab12479 | 4734 | |
101d1605 | 4735 | static void |
971de7fb | 4736 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 4737 | { |
cba59f77 RS |
4738 | immediate_quit = 1; |
4739 | ||
5500c422 GM |
4740 | /* If we must, use the pixel-based version which is much slower than |
4741 | the line-based one but can handle varying line heights. */ | |
4742 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4743 | window_scroll_pixel_based (window, n, whole, noerror); | |
4744 | else | |
4745 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4746 | |
4747 | immediate_quit = 0; | |
5500c422 GM |
4748 | } |
4749 | ||
4750 | ||
4751 | /* Implementation of window_scroll that works based on pixel line | |
4752 | heights. See the comment of window_scroll for parameter | |
4753 | descriptions. */ | |
4754 | ||
4755 | static void | |
971de7fb | 4756 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4757 | { |
4758 | struct it it; | |
4759 | struct window *w = XWINDOW (window); | |
4760 | struct text_pos start; | |
5500c422 | 4761 | int this_scroll_margin; |
9d14503e | 4762 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4763 | int vscrolled = 0; |
5a857365 | 4764 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4765 | |
4766 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4767 | |
5500c422 | 4768 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4769 | the screen. Allow PT to be partially visible, otherwise |
4770 | something like (scroll-down 1) with PT in the line before | |
4771 | the partially visible one would recenter. */ | |
5a857365 KS |
4772 | |
4773 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4774 | { |
4775 | /* Move backward half the height of the window. Performance note: | |
4776 | vmotion used here is about 10% faster, but would give wrong | |
4777 | results for variable height lines. */ | |
4778 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4779 | it.current_y = it.last_visible_y; | |
f204989e | 4780 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4781 | |
5500c422 GM |
4782 | /* The function move_iterator_vertically may move over more than |
4783 | the specified y-distance. If it->w is small, e.g. a | |
4784 | mini-buffer window, we may end up in front of the window's | |
4785 | display area. This is the case when Start displaying at the | |
4786 | start of the line containing PT in this case. */ | |
4787 | if (it.current_y <= 0) | |
4788 | { | |
4789 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4790 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4791 | it.current_y = 0; |
4792 | } | |
4793 | ||
4794 | start = it.current.pos; | |
4795 | } | |
e56263e5 KS |
4796 | else if (auto_window_vscroll_p) |
4797 | { | |
5a857365 | 4798 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4799 | { |
4800 | int px; | |
4801 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4802 | if (whole) | |
e856c216 KS |
4803 | dy = max ((window_box_height (w) |
4804 | - next_screen_context_lines * dy), | |
4805 | dy); | |
e56263e5 KS |
4806 | dy *= n; |
4807 | ||
5a857365 | 4808 | if (n < 0) |
e56263e5 | 4809 | { |
5a857365 KS |
4810 | /* Only vscroll backwards if already vscrolled forwards. */ |
4811 | if (w->vscroll < 0 && rtop > 0) | |
4812 | { | |
4813 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4814 | Fset_window_vscroll (window, make_number (px), Qt); | |
4815 | return; | |
4816 | } | |
e56263e5 | 4817 | } |
5a857365 | 4818 | if (n > 0) |
e56263e5 | 4819 | { |
5a857365 KS |
4820 | /* Do vscroll if already vscrolled or only display line. */ |
4821 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4822 | { | |
4823 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4824 | Fset_window_vscroll (window, make_number (px), Qt); | |
4825 | return; | |
4826 | } | |
4827 | ||
4828 | /* Maybe modify window start instead of scrolling. */ | |
4829 | if (rbot > 0 || w->vscroll < 0) | |
4830 | { | |
2452438f | 4831 | EMACS_INT spos; |
5a857365 KS |
4832 | |
4833 | Fset_window_vscroll (window, make_number (0), Qt); | |
4834 | /* If there are other text lines above the current row, | |
4835 | move window start to current row. Else to next row. */ | |
4836 | if (rbot > 0) | |
4837 | spos = XINT (Fline_beginning_position (Qnil)); | |
4838 | else | |
4839 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4840 | set_marker_restricted (w->start, make_number (spos), | |
4841 | w->buffer); | |
4842 | w->start_at_line_beg = Qt; | |
4843 | w->update_mode_line = Qt; | |
4844 | XSETFASTINT (w->last_modified, 0); | |
4845 | XSETFASTINT (w->last_overlay_modified, 0); | |
4846 | /* Set force_start so that redisplay_window will run the | |
4847 | window-scroll-functions. */ | |
4848 | w->force_start = Qt; | |
4849 | return; | |
4850 | } | |
e56263e5 KS |
4851 | } |
4852 | } | |
5a857365 | 4853 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4854 | Fset_window_vscroll (window, make_number (0), Qt); |
4855 | } | |
5500c422 | 4856 | |
d0c38d63 | 4857 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4858 | point in the same window line as it is now, so get that line. */ |
4859 | if (!NILP (Vscroll_preserve_screen_position)) | |
4860 | { | |
c525d842 | 4861 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4862 | calls to scroll-up, scroll-down and other commands that |
4863 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4864 | possibility of point becoming "stuck" on a tall line when |
4865 | scrolling by one line. */ | |
66fe93d1 | 4866 | if (window_scroll_pixel_based_preserve_y < 0 |
a4b000fb JL |
4867 | || !SYMBOLP (current_kboard->Vlast_command) |
4868 | || NILP (Fget (current_kboard->Vlast_command, Qscroll_command))) | |
c525d842 CY |
4869 | { |
4870 | start_display (&it, w, start); | |
4871 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4872 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4873 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4874 | } |
5500c422 GM |
4875 | } |
4876 | else | |
c876b227 SM |
4877 | window_scroll_pixel_based_preserve_y |
4878 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4879 | |
4880 | /* Move iterator it from start the specified distance forward or | |
4881 | backward. The result is the new window start. */ | |
4882 | start_display (&it, w, start); | |
4883 | if (whole) | |
4884 | { | |
2452438f | 4885 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
4886 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4887 | dy = max ((window_box_height (w) | |
4888 | - next_screen_context_lines * dy), | |
4889 | dy) * n; | |
d72340d4 GM |
4890 | |
4891 | /* Note that move_it_vertically always moves the iterator to the | |
4892 | start of a line. So, if the last line doesn't have a newline, | |
4893 | we would end up at the start of the line ending at ZV. */ | |
4894 | if (dy <= 0) | |
e856c216 KS |
4895 | { |
4896 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4897 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4898 | looking at an image that is taller that the window height. */ |
4899 | while (start_pos == IT_CHARPOS (it) | |
4900 | && start_pos > BEGV) | |
4901 | move_it_by_lines (&it, -1, 1); | |
4902 | } | |
d72340d4 | 4903 | else if (dy > 0) |
bed83ee4 | 4904 | { |
bed83ee4 KS |
4905 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4906 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4907 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4908 | looking at an image that is taller that the window height. */ |
4909 | while (start_pos == IT_CHARPOS (it) | |
4910 | && start_pos < ZV) | |
4911 | move_it_by_lines (&it, 1, 1); | |
4912 | } | |
5500c422 GM |
4913 | } |
4914 | else | |
4915 | move_it_by_lines (&it, n, 1); | |
4916 | ||
96ae58c8 RS |
4917 | /* We failed if we find ZV is already on the screen (scrolling up, |
4918 | means there's nothing past the end), or if we can't start any | |
4919 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4920 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4921 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4922 | { |
5cdb3cf3 MB |
4923 | if (IT_CHARPOS (it) == ZV) |
4924 | { | |
07ce8b53 RS |
4925 | if (it.current_y < it.last_visible_y |
4926 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4927 | > it.last_visible_y)) |
a74eca50 GM |
4928 | { |
4929 | /* The last line was only partially visible, make it fully | |
4930 | visible. */ | |
4931 | w->vscroll = (it.last_visible_y | |
4932 | - it.current_y + it.max_ascent + it.max_descent); | |
4933 | adjust_glyphs (it.f); | |
4934 | } | |
5cdb3cf3 MB |
4935 | else if (noerror) |
4936 | return; | |
cf402f3f | 4937 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 4938 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 4939 | else |
ba96a5cf | 4940 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 4941 | } |
5500c422 | 4942 | else |
5cdb3cf3 MB |
4943 | { |
4944 | if (w->vscroll != 0) | |
4945 | /* The first line was only partially visible, make it fully | |
4946 | visible. */ | |
4947 | w->vscroll = 0; | |
4948 | else if (noerror) | |
4949 | return; | |
4950 | else | |
ba96a5cf | 4951 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
4952 | } |
4953 | ||
4954 | /* If control gets here, then we vscrolled. */ | |
4955 | ||
4956 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4957 | ||
4958 | /* Don't try to change the window start below. */ | |
4959 | vscrolled = 1; | |
5500c422 GM |
4960 | } |
4961 | ||
5cdb3cf3 MB |
4962 | if (! vscrolled) |
4963 | { | |
2452438f EZ |
4964 | EMACS_INT pos = IT_CHARPOS (it); |
4965 | EMACS_INT bytepos; | |
e68def1e AS |
4966 | |
4967 | /* If in the middle of a multi-glyph character move forward to | |
4968 | the next character. */ | |
4969 | if (in_display_vector_p (&it)) | |
4970 | { | |
4971 | ++pos; | |
4972 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4973 | } | |
4974 | ||
5cdb3cf3 | 4975 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4976 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4977 | w->buffer); |
dad67609 RS |
4978 | bytepos = XMARKER (w->start)->bytepos; |
4979 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4980 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4981 | w->update_mode_line = Qt; |
4982 | XSETFASTINT (w->last_modified, 0); | |
4983 | XSETFASTINT (w->last_overlay_modified, 0); | |
4984 | /* Set force_start so that redisplay_window will run the | |
4985 | window-scroll-functions. */ | |
4986 | w->force_start = Qt; | |
4987 | } | |
177c0ea7 | 4988 | |
dc297565 RS |
4989 | /* The rest of this function uses current_y in a nonstandard way, |
4990 | not including the height of the header line if any. */ | |
5500c422 | 4991 | it.current_y = it.vpos = 0; |
177c0ea7 | 4992 | |
940f53e5 RS |
4993 | /* Move PT out of scroll margins. |
4994 | This code wants current_y to be zero at the window start position | |
4995 | even if there is a header line. */ | |
4996 | this_scroll_margin = max (0, scroll_margin); | |
4997 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4998 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4999 | ||
5000 | if (n > 0) | |
5500c422 | 5001 | { |
940f53e5 RS |
5002 | /* We moved the window start towards ZV, so PT may be now |
5003 | in the scroll margin at the top. */ | |
5004 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5005 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5006 | && (NILP (Vscroll_preserve_screen_position) | |
5007 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5008 | /* We found PT at a legitimate height. Leave it alone. */ |
5009 | ; | |
66fe93d1 | 5010 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5011 | { |
fa3c3426 RS |
5012 | /* If we have a header line, take account of it. |
5013 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5014 | move_it_to (&it, -1, |
5015 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5016 | window_scroll_pixel_based_preserve_y |
5017 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5018 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5019 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5020 | } | |
5021 | else | |
5500c422 | 5022 | { |
5500c422 | 5023 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5024 | { |
5025 | int prev = it.current_y; | |
5026 | move_it_by_lines (&it, 1, 1); | |
5027 | if (prev == it.current_y) | |
5028 | break; | |
5029 | } | |
5500c422 GM |
5030 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5031 | } | |
940f53e5 RS |
5032 | } |
5033 | else if (n < 0) | |
5034 | { | |
2452438f | 5035 | EMACS_INT charpos, bytepos; |
aed328bf | 5036 | int partial_p; |
940f53e5 | 5037 | |
66fe93d1 LT |
5038 | /* Save our position, for the |
5039 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5040 | charpos = IT_CHARPOS (it); |
5041 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5042 | |
940f53e5 RS |
5043 | /* We moved the window start towards BEGV, so PT may be now |
5044 | in the scroll margin at the bottom. */ | |
5045 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5046 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5047 | - this_scroll_margin - 1), | |
5048 | -1, | |
940f53e5 RS |
5049 | MOVE_TO_POS | MOVE_TO_Y); |
5050 | ||
aed328bf KS |
5051 | /* Save our position, in case it's correct. */ |
5052 | charpos = IT_CHARPOS (it); | |
5053 | bytepos = IT_BYTEPOS (it); | |
5054 | ||
5055 | /* See if point is on a partially visible line at the end. */ | |
5056 | if (it.what == IT_EOB) | |
5057 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5058 | else | |
5059 | { | |
5060 | move_it_by_lines (&it, 1, 1); | |
5061 | partial_p = it.current_y > it.last_visible_y; | |
5062 | } | |
5063 | ||
bdf4ec93 RS |
5064 | if (charpos == PT && !partial_p |
5065 | && (NILP (Vscroll_preserve_screen_position) | |
5066 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5067 | /* We found PT before we found the display margin, so PT is ok. */ |
5068 | ; | |
66fe93d1 | 5069 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5070 | { |
5071 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5072 | start_display (&it, w, start); | |
c525d842 CY |
5073 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5074 | here because we called start_display again and did not | |
5075 | alter it.current_y this time. */ | |
c876b227 SM |
5076 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5077 | window_scroll_pixel_based_preserve_y, -1, | |
5078 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5079 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5080 | } | |
5081 | else | |
5082 | { | |
aed328bf | 5083 | if (partial_p) |
5cdb3cf3 MB |
5084 | /* The last line was only partially visible, so back up two |
5085 | lines to make sure we're on a fully visible line. */ | |
5086 | { | |
5087 | move_it_by_lines (&it, -2, 0); | |
5088 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5089 | } | |
5090 | else | |
5091 | /* No, the position we saved is OK, so use it. */ | |
5092 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5093 | } |
5094 | } | |
5095 | } | |
5096 | ||
5097 | ||
5098 | /* Implementation of window_scroll that works based on screen lines. | |
5099 | See the comment of window_scroll for parameter descriptions. */ | |
5100 | ||
5101 | static void | |
971de7fb | 5102 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
5103 | { |
5104 | register struct window *w = XWINDOW (window); | |
2452438f EZ |
5105 | register EMACS_INT opoint = PT, opoint_byte = PT_BYTE; |
5106 | register EMACS_INT pos, pos_byte; | |
7ab12479 JB |
5107 | register int ht = window_internal_height (w); |
5108 | register Lisp_Object tem; | |
5109 | int lose; | |
5500c422 | 5110 | Lisp_Object bolp; |
2452438f | 5111 | EMACS_INT startpos; |
c876b227 | 5112 | Lisp_Object original_pos = Qnil; |
101d1605 | 5113 | |
d4e7cf01 GM |
5114 | /* If scrolling screen-fulls, compute the number of lines to |
5115 | scroll from the window's height. */ | |
5116 | if (whole) | |
5117 | n *= max (1, ht - next_screen_context_lines); | |
5118 | ||
101d1605 RS |
5119 | startpos = marker_position (w->start); |
5120 | ||
c876b227 SM |
5121 | if (!NILP (Vscroll_preserve_screen_position)) |
5122 | { | |
5123 | if (window_scroll_preserve_vpos <= 0 | |
a4b000fb JL |
5124 | || !SYMBOLP (current_kboard->Vlast_command) |
5125 | || NILP (Fget (current_kboard->Vlast_command, Qscroll_command))) | |
c876b227 SM |
5126 | { |
5127 | struct position posit | |
5128 | = *compute_motion (startpos, 0, 0, 0, | |
5129 | PT, ht, 0, | |
5130 | -1, XINT (w->hscroll), | |
5131 | 0, w); | |
5132 | window_scroll_preserve_vpos = posit.vpos; | |
5133 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5134 | } | |
5135 | ||
5136 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5137 | make_number (window_scroll_preserve_vpos)); | |
5138 | } | |
0a1f771a | 5139 | |
d834a2e9 | 5140 | XSETFASTINT (tem, PT); |
6ffdb539 | 5141 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5142 | |
265a9e55 | 5143 | if (NILP (tem)) |
7ab12479 | 5144 | { |
cd2be1dd | 5145 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5146 | startpos = PT; |
7ab12479 JB |
5147 | } |
5148 | ||
345d45b2 | 5149 | SET_PT (startpos); |
5ce7b543 | 5150 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5151 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5152 | pos = PT; |
b73ea88e | 5153 | pos_byte = PT_BYTE; |
7ab12479 | 5154 | bolp = Fbolp (); |
b73ea88e | 5155 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5156 | |
5157 | if (lose) | |
f8026fd8 JB |
5158 | { |
5159 | if (noerror) | |
5160 | return; | |
5161 | else | |
ba96a5cf | 5162 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5163 | } |
7ab12479 JB |
5164 | |
5165 | if (pos < ZV) | |
7ab12479 | 5166 | { |
0c7da84e RS |
5167 | int this_scroll_margin = scroll_margin; |
5168 | ||
5169 | /* Don't use a scroll margin that is negative or too large. */ | |
5170 | if (this_scroll_margin < 0) | |
5171 | this_scroll_margin = 0; | |
5172 | ||
949cf20f KS |
5173 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5174 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5175 | |
b73ea88e | 5176 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5177 | w->start_at_line_beg = bolp; |
5178 | w->update_mode_line = Qt; | |
d834a2e9 | 5179 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5180 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5181 | /* Set force_start so that redisplay_window will run |
5182 | the window-scroll-functions. */ | |
5183 | w->force_start = Qt; | |
0c7da84e | 5184 | |
bdf4ec93 RS |
5185 | if (!NILP (Vscroll_preserve_screen_position) |
5186 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5187 | { |
b73ea88e | 5188 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5189 | Fvertical_motion (original_pos, window); |
0c7da84e | 5190 | } |
101d1605 RS |
5191 | /* If we scrolled forward, put point enough lines down |
5192 | that it is outside the scroll margin. */ | |
5193 | else if (n > 0) | |
0c7da84e | 5194 | { |
101d1605 RS |
5195 | int top_margin; |
5196 | ||
5197 | if (this_scroll_margin > 0) | |
5198 | { | |
b73ea88e | 5199 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5200 | Fvertical_motion (make_number (this_scroll_margin), window); |
5201 | top_margin = PT; | |
5202 | } | |
5203 | else | |
5204 | top_margin = pos; | |
5205 | ||
5206 | if (top_margin <= opoint) | |
b73ea88e | 5207 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5208 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5209 | { |
b73ea88e | 5210 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5211 | Fvertical_motion (original_pos, window); |
101d1605 | 5212 | } |
9317a85d | 5213 | else |
335406fc | 5214 | SET_PT (top_margin); |
0c7da84e | 5215 | } |
101d1605 | 5216 | else if (n < 0) |
7ab12479 | 5217 | { |
101d1605 RS |
5218 | int bottom_margin; |
5219 | ||
0c7da84e RS |
5220 | /* If we scrolled backward, put point near the end of the window |
5221 | but not within the scroll margin. */ | |
b73ea88e | 5222 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5223 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5224 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5225 | bottom_margin = PT; | |
5226 | else | |
5227 | bottom_margin = PT + 1; | |
5228 | ||
5229 | if (bottom_margin > opoint) | |
b73ea88e | 5230 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5231 | else |
101d1605 | 5232 | { |
5500c422 | 5233 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5234 | { |
b73ea88e | 5235 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5236 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5237 | } |
5238 | else | |
5239 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5240 | } |
7ab12479 JB |
5241 | } |
5242 | } | |
5243 | else | |
f8026fd8 JB |
5244 | { |
5245 | if (noerror) | |
5246 | return; | |
5247 | else | |
ba96a5cf | 5248 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5249 | } |
7ab12479 | 5250 | } |
5500c422 GM |
5251 | |
5252 | ||
5253 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5254 | screen-full which is defined as the height of the window minus | |
5255 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5256 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5257 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5258 | |
5259 | static void | |
971de7fb | 5260 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 5261 | { |
331379bf | 5262 | int count = SPECPDL_INDEX (); |
7ab12479 | 5263 | |
1ea40aa2 | 5264 | xassert (eabs (direction) == 1); |
5500c422 GM |
5265 | |
5266 | /* If selected window's buffer isn't current, make it current for | |
5267 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5268 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5269 | { |
5270 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5271 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5272 | |
5273 | /* Make redisplay consider other windows than just selected_window. */ | |
5274 | ++windows_or_buffers_changed; | |
95605e15 | 5275 | } |
7ab12479 | 5276 | |
265a9e55 | 5277 | if (NILP (n)) |
d4e7cf01 | 5278 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5279 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5280 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5281 | else |
5282 | { | |
5283 | n = Fprefix_numeric_value (n); | |
101d1605 | 5284 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5285 | } |
95605e15 JB |
5286 | |
5287 | unbind_to (count, Qnil); | |
7ab12479 JB |
5288 | } |
5289 | ||
e0965597 | 5290 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5291 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5292 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5293 | A near full screen is `next-screen-context-lines' less than a full screen. |
5294 | Negative ARG means scroll downward. | |
5295 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5296 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5297 | (Lisp_Object arg) |
7ab12479 | 5298 | { |
413430c5 | 5299 | scroll_command (arg, 1); |
7ab12479 JB |
5300 | return Qnil; |
5301 | } | |
5302 | ||
e0965597 | 5303 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5304 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5305 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5306 | A near full screen is `next-screen-context-lines' less than a full screen. |
5307 | Negative ARG means scroll upward. | |
5308 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5309 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5310 | (Lisp_Object arg) |
7ab12479 | 5311 | { |
413430c5 | 5312 | scroll_command (arg, -1); |
7ab12479 JB |
5313 | return Qnil; |
5314 | } | |
ccd0664b RS |
5315 | \f |
5316 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5317 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5318 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5319 | showing that buffer is used. |
5320 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5321 | specifies the window. This takes precedence over | |
5322 | `other-window-scroll-buffer'. */) | |
5842a27b | 5323 | (void) |
7ab12479 | 5324 | { |
ccd0664b | 5325 | Lisp_Object window; |
7ab12479 JB |
5326 | |
5327 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5328 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5329 | window = Vminibuf_scroll_window; |
5330 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5331 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5332 | { |
5333 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5334 | if (NILP (window)) |
87478b52 | 5335 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5336 | } |
5337 | else | |
dbc4e1c1 JB |
5338 | { |
5339 | /* Nothing specified; look for a neighboring window on the same | |
5340 | frame. */ | |
5341 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5342 | ||
5343 | if (EQ (window, selected_window)) | |
5344 | /* That didn't get us anywhere; look for a window on another | |
5345 | visible frame. */ | |
5346 | do | |
5347 | window = Fnext_window (window, Qnil, Qt); | |
5348 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5349 | && ! EQ (window, selected_window)); | |
5350 | } | |
5351 | ||
b7826503 | 5352 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5353 | |
5354 | if (EQ (window, selected_window)) | |
5355 | error ("There is no other window"); | |
5356 | ||
ccd0664b RS |
5357 | return window; |
5358 | } | |
5359 | ||
5360 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5361 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5362 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5363 | The next window is the one below the current one; or the one at the top | |
5364 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5365 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5366 | When calling from a program, supply as argument a number, nil, or `-'. | |
5367 | ||
fdb82f93 | 5368 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5369 | showing that buffer, popping the buffer up if necessary. |
5370 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5371 | specifies the window to scroll. This takes precedence over | |
5372 | `other-window-scroll-buffer'. */) | |
5842a27b | 5373 | (Lisp_Object arg) |
ccd0664b | 5374 | { |
d4e7cf01 GM |
5375 | Lisp_Object window; |
5376 | struct window *w; | |
331379bf | 5377 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5378 | |
5379 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5380 | w = XWINDOW (window); |
7ab12479 JB |
5381 | |
5382 | /* Don't screw up if window_scroll gets an error. */ | |
5383 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5384 | ++windows_or_buffers_changed; |
7ab12479 JB |
5385 | |
5386 | Fset_buffer (w->buffer); | |
5387 | SET_PT (marker_position (w->pointm)); | |
5388 | ||
413430c5 | 5389 | if (NILP (arg)) |
d4e7cf01 | 5390 | window_scroll (window, 1, 1, 1); |
413430c5 | 5391 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5392 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5393 | else |
5394 | { | |
413430c5 EN |
5395 | if (CONSP (arg)) |
5396 | arg = Fcar (arg); | |
b7826503 | 5397 | CHECK_NUMBER (arg); |
101d1605 | 5398 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5399 | } |
5400 | ||
b73ea88e | 5401 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5402 | unbind_to (count, Qnil); |
7ab12479 JB |
5403 | |
5404 | return Qnil; | |
5405 | } | |
5406 | \f | |
e0965597 | 5407 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5408 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5409 | Default for ARG is window width minus 2. |
5410 | Value is the total amount of leftward horizontal scrolling in | |
5411 | effect after the change. | |
23fe745a | 5412 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5413 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5414 | will not scroll a window to a column less than the value returned |
dc297565 | 5415 | by this function. This happens in an interactive call. */) |
5842a27b | 5416 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5417 | { |
c67fa410 GM |
5418 | Lisp_Object result; |
5419 | int hscroll; | |
5420 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5421 | |
265a9e55 | 5422 | if (NILP (arg)) |
949cf20f | 5423 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5424 | else |
5425 | arg = Fprefix_numeric_value (arg); | |
5426 | ||
c67fa410 GM |
5427 | hscroll = XINT (w->hscroll) + XINT (arg); |
5428 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5429 | ||
dc297565 | 5430 | if (!NILP (set_minimum)) |
c67fa410 GM |
5431 | w->min_hscroll = w->hscroll; |
5432 | ||
5433 | return result; | |
7ab12479 JB |
5434 | } |
5435 | ||
e0965597 | 5436 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5437 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5438 | Default for ARG is window width minus 2. |
5439 | Value is the total amount of leftward horizontal scrolling in | |
5440 | effect after the change. | |
23fe745a | 5441 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5442 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5443 | will not scroll a window to a column less than the value returned |
dc297565 | 5444 | by this function. This happens in an interactive call. */) |
5842a27b | 5445 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5446 | { |
c67fa410 GM |
5447 | Lisp_Object result; |
5448 | int hscroll; | |
5449 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5450 | |
265a9e55 | 5451 | if (NILP (arg)) |
949cf20f | 5452 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5453 | else |
5454 | arg = Fprefix_numeric_value (arg); | |
5455 | ||
c67fa410 GM |
5456 | hscroll = XINT (w->hscroll) - XINT (arg); |
5457 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5458 | |
dc297565 | 5459 | if (!NILP (set_minimum)) |
c67fa410 GM |
5460 | w->min_hscroll = w->hscroll; |
5461 | ||
5462 | return result; | |
7ab12479 JB |
5463 | } |
5464 | ||
fa832261 KS |
5465 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5466 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5467 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5468 | (void) |
fa832261 KS |
5469 | { |
5470 | if (minibuf_level > 0 | |
5471 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5472 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5473 | return minibuf_selected_window; | |
5474 | ||
5475 | return Qnil; | |
5476 | } | |
5477 | ||
12c8b416 GM |
5478 | /* Value is the number of lines actually displayed in window W, |
5479 | as opposed to its height. */ | |
5480 | ||
5481 | static int | |
971de7fb | 5482 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5483 | { |
5484 | struct it it; | |
5485 | struct text_pos start; | |
5486 | int height = window_box_height (w); | |
5487 | struct buffer *old_buffer; | |
5488 | int bottom_y; | |
5489 | ||
5490 | if (XBUFFER (w->buffer) != current_buffer) | |
5491 | { | |
5492 | old_buffer = current_buffer; | |
5493 | set_buffer_internal (XBUFFER (w->buffer)); | |
5494 | } | |
5495 | else | |
5496 | old_buffer = NULL; | |
5497 | ||
521b203e GM |
5498 | /* In case W->start is out of the accessible range, do something |
5499 | reasonable. This happens in Info mode when Info-scroll-down | |
5500 | calls (recenter -1) while W->start is 1. */ | |
5501 | if (XMARKER (w->start)->charpos < BEGV) | |
5502 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5503 | else if (XMARKER (w->start)->charpos > ZV) | |
5504 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5505 | else | |
5506 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5507 | ||
12c8b416 GM |
5508 | start_display (&it, w, start); |
5509 | move_it_vertically (&it, height); | |
c8bc6f65 | 5510 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5511 | |
1de65f51 RS |
5512 | /* rms: On a non-window display, |
5513 | the value of it.vpos at the bottom of the screen | |
5514 | seems to be 1 larger than window_box_height (w). | |
5515 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5516 | when ZV is on the last screen line | |
5517 | moves to the previous screen line instead of the last one. */ | |
5518 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5519 | height++; | |
5520 | ||
12c8b416 GM |
5521 | /* Add in empty lines at the bottom of the window. */ |
5522 | if (bottom_y < height) | |
5523 | { | |
949cf20f | 5524 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5525 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5526 | } |
5527 | ||
c8bc6f65 GM |
5528 | if (old_buffer) |
5529 | set_buffer_internal (old_buffer); | |
5530 | ||
12c8b416 GM |
5531 | return it.vpos; |
5532 | } | |
5533 | ||
5534 | ||
7ab12479 | 5535 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5536 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5537 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5538 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5539 | bottom of the window. (ARG should be less than the height of the window.) |
5540 | ||
666e158e MB |
5541 | If ARG is omitted or nil, then recenter with point on the middle line of |
5542 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5543 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5544 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5545 | height needed); if `recenter-redisplay' has the special value `tty', | |
5546 | then only tty frame are redrawn. | |
7d1d98ee | 5547 | |
fdb82f93 PJ |
5548 | Just C-u as prefix means put point in the center of the window |
5549 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5550 | (register Lisp_Object arg) |
7ab12479 | 5551 | { |
6df47b59 | 5552 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5553 | struct buffer *buf = XBUFFER (w->buffer); |
5554 | struct buffer *obuf = current_buffer; | |
6df47b59 | 5555 | int center_p = 0; |
2452438f | 5556 | EMACS_INT charpos, bytepos; |
f6b43440 RS |
5557 | int iarg; |
5558 | int this_scroll_margin; | |
7ab12479 | 5559 | |
0fa5d25b RS |
5560 | /* If redisplay is suppressed due to an error, try again. */ |
5561 | obuf->display_error_modiff = 0; | |
5562 | ||
413430c5 | 5563 | if (NILP (arg)) |
7ab12479 | 5564 | { |
666e158e MB |
5565 | if (!NILP (Vrecenter_redisplay) |
5566 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5567 | || !NILP (Ftty_type (selected_frame)))) | |
5568 | { | |
5569 | int i; | |
f02d6d5c | 5570 | |
666e158e MB |
5571 | /* Invalidate pixel data calculated for all compositions. */ |
5572 | for (i = 0; i < n_compositions; i++) | |
5573 | composition_table[i]->font = NULL; | |
7ab12479 | 5574 | |
666e158e MB |
5575 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5576 | ||
5577 | Fredraw_frame (WINDOW_FRAME (w)); | |
5578 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5579 | } | |
7d1d98ee | 5580 | |
6df47b59 | 5581 | center_p = 1; |
7ab12479 | 5582 | } |
413430c5 | 5583 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5584 | center_p = 1; |
7ab12479 JB |
5585 | else |
5586 | { | |
413430c5 | 5587 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5588 | CHECK_NUMBER (arg); |
ae12ecd7 | 5589 | iarg = XINT (arg); |
7ab12479 JB |
5590 | } |
5591 | ||
478292ed | 5592 | set_buffer_internal (buf); |
7ab12479 | 5593 | |
f6b43440 RS |
5594 | /* Do this after making BUF current |
5595 | in case scroll_margin is buffer-local. */ | |
5596 | this_scroll_margin = max (0, scroll_margin); | |
5597 | this_scroll_margin = min (this_scroll_margin, | |
5598 | XFASTINT (w->total_lines) / 4); | |
5599 | ||
521b203e | 5600 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5601 | have variable-height lines and centering point on the basis of |
5602 | line counts would lead to strange effects. */ | |
521b203e | 5603 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5604 | { |
6df47b59 GM |
5605 | if (center_p) |
5606 | { | |
521b203e GM |
5607 | struct it it; |
5608 | struct text_pos pt; | |
177c0ea7 | 5609 | |
521b203e GM |
5610 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5611 | start_display (&it, w, pt); | |
f204989e | 5612 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5613 | charpos = IT_CHARPOS (it); |
5614 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5615 | } |
f6b43440 | 5616 | else if (iarg < 0) |
6df47b59 | 5617 | { |
521b203e GM |
5618 | struct it it; |
5619 | struct text_pos pt; | |
f6b43440 | 5620 | int nlines = -iarg; |
f204989e KS |
5621 | int extra_line_spacing; |
5622 | int h = window_box_height (w); | |
177c0ea7 | 5623 | |
f6b43440 RS |
5624 | iarg = - max (-iarg, this_scroll_margin); |
5625 | ||
521b203e GM |
5626 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5627 | start_display (&it, w, pt); | |
f204989e KS |
5628 | |
5629 | /* Be sure we have the exact height of the full line containing PT. */ | |
5630 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5631 | |
d466fa4d | 5632 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5633 | height minus what's displayed in the line containing PT, |
5634 | and the lines below. */ | |
f204989e KS |
5635 | it.current_y = 0; |
5636 | it.vpos = 0; | |
d466fa4d GM |
5637 | move_it_by_lines (&it, nlines, 1); |
5638 | ||
f204989e KS |
5639 | if (it.vpos == nlines) |
5640 | h -= it.current_y; | |
5641 | else | |
5642 | { | |
5643 | /* Last line has no newline */ | |
5644 | h -= line_bottom_y (&it); | |
5645 | it.vpos++; | |
5646 | } | |
5647 | ||
5648 | /* Don't reserve space for extra line spacing of last line. */ | |
5649 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5650 | |
5651 | /* If we can't move down NLINES lines because we hit | |
5652 | the end of the buffer, count in some empty lines. */ | |
5653 | if (it.vpos < nlines) | |
f204989e KS |
5654 | { |
5655 | nlines -= it.vpos; | |
5656 | extra_line_spacing = it.extra_line_spacing; | |
5657 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5658 | } | |
5659 | if (h <= 0) | |
5660 | return Qnil; | |
201c831a | 5661 | |
f204989e | 5662 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5663 | start_display (&it, w, pt); |
f204989e KS |
5664 | it.current_y = 0; |
5665 | move_it_vertically_backward (&it, h); | |
5666 | ||
5667 | /* If extra line spacing is present, we may move too far | |
5668 | back. This causes the last line to be only partially | |
5669 | visible (which triggers redisplay to recenter that line | |
5670 | in the middle), so move forward. | |
5671 | But ignore extra line spacing on last line, as it is not | |
5672 | considered to be part of the visible height of the line. | |
5673 | */ | |
5674 | h += extra_line_spacing; | |
5675 | while (-it.current_y > h) | |
5676 | move_it_by_lines (&it, 1, 1); | |
5677 | ||
521b203e GM |
5678 | charpos = IT_CHARPOS (it); |
5679 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5680 | } |
521b203e GM |
5681 | else |
5682 | { | |
5683 | struct position pos; | |
f6b43440 | 5684 | |
f6b43440 RS |
5685 | iarg = max (iarg, this_scroll_margin); |
5686 | ||
5687 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5688 | charpos = pos.bufpos; |
5689 | bytepos = pos.bytepos; | |
5690 | } | |
5691 | } | |
5692 | else | |
5693 | { | |
5694 | struct position pos; | |
5695 | int ht = window_internal_height (w); | |
5696 | ||
5697 | if (center_p) | |
a4429c5b | 5698 | iarg = ht / 2; |
f567c488 KS |
5699 | else if (iarg < 0) |
5700 | iarg += ht; | |
f6b43440 RS |
5701 | |
5702 | /* Don't let it get into the margin at either top or bottom. */ | |
5703 | iarg = max (iarg, this_scroll_margin); | |
5704 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5705 | |
f6b43440 | 5706 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5707 | charpos = pos.bufpos; |
5708 | bytepos = pos.bytepos; | |
5709 | } | |
5710 | ||
5711 | /* Set the new window start. */ | |
5712 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5713 | w->window_end_valid = Qnil; |
177c0ea7 | 5714 | |
95605b1b RS |
5715 | w->optional_new_start = Qt; |
5716 | ||
6df47b59 GM |
5717 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5718 | w->start_at_line_beg = Qt; | |
5719 | else | |
5720 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5721 | |
478292ed | 5722 | set_buffer_internal (obuf); |
7ab12479 JB |
5723 | return Qnil; |
5724 | } | |
b7617575 GM |
5725 | |
5726 | ||
81fe0836 | 5727 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5728 | 0, 1, 0, |
5729 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5730 | WINDOW defaults to the selected window. |
8fef9de1 | 5731 | |
f039b2d2 CY |
5732 | The return value does not include the mode line, any header line, nor |
5733 | any partial-height lines in the text display area. */) | |
5842a27b | 5734 | (Lisp_Object window) |
81fe0836 MB |
5735 | { |
5736 | struct window *w = decode_window (window); | |
5737 | int pixel_height = window_box_height (w); | |
949cf20f | 5738 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5739 | return make_number (line_height); |
5740 | } | |
5741 | ||
5742 | ||
7ab12479 JB |
5743 | \f |
5744 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5745 | 1, 1, "P", |
5746 | doc: /* Position point relative to window. | |
5747 | With no argument, position point at center of window. | |
5748 | An argument specifies vertical position within the window; | |
5749 | zero means top of window, negative means relative to bottom of window. */) | |
5842a27b | 5750 | (Lisp_Object arg) |
7ab12479 | 5751 | { |
b7617575 GM |
5752 | struct window *w = XWINDOW (selected_window); |
5753 | int lines, start; | |
540b6aa0 | 5754 | Lisp_Object window; |
f6b43440 RS |
5755 | #if 0 |
5756 | int this_scroll_margin; | |
5757 | #endif | |
7ab12479 | 5758 | |
b7617575 | 5759 | window = selected_window; |
7ab12479 JB |
5760 | start = marker_position (w->start); |
5761 | if (start < BEGV || start > ZV) | |
5762 | { | |
b7617575 | 5763 | int height = window_internal_height (w); |
cd2be1dd | 5764 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5765 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5766 | w->start_at_line_beg = Fbolp (); |
5767 | w->force_start = Qt; | |
5768 | } | |
5769 | else | |
b73ea88e | 5770 | Fgoto_char (w->start); |
7ab12479 | 5771 | |
b7617575 | 5772 | lines = displayed_window_lines (w); |
f6b43440 RS |
5773 | |
5774 | #if 0 | |
5775 | this_scroll_margin = max (0, scroll_margin); | |
5776 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5777 | #endif | |
5778 | ||
b7617575 GM |
5779 | if (NILP (arg)) |
5780 | XSETFASTINT (arg, lines / 2); | |
5781 | else | |
5782 | { | |
f6b43440 RS |
5783 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5784 | ||
5785 | if (iarg < 0) | |
5786 | iarg = iarg + lines; | |
5787 | ||
5788 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5789 | to a place inside the scroll margins (which would cause the | |
5790 | next redisplay to scroll). I wrote this code, but then concluded | |
5791 | it is probably better not to install it. However, it is here | |
5792 | inside #if 0 so as not to lose it. -- rms. */ | |
5793 | ||
5794 | /* Don't let it get into the margin at either top or bottom. */ | |
5795 | iarg = max (iarg, this_scroll_margin); | |
5796 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5797 | #endif | |
5798 | ||
5799 | arg = make_number (iarg); | |
b7617575 GM |
5800 | } |
5801 | ||
c8bc6f65 | 5802 | /* Skip past a partially visible first line. */ |
163784df | 5803 | if (w->vscroll) |
163784df MB |
5804 | XSETINT (arg, XINT (arg) + 1); |
5805 | ||
540b6aa0 | 5806 | return Fvertical_motion (arg, window); |
7ab12479 | 5807 | } |
5500c422 GM |
5808 | |
5809 | ||
7ab12479 | 5810 | \f |
5500c422 GM |
5811 | /*********************************************************************** |
5812 | Window Configuration | |
5813 | ***********************************************************************/ | |
5814 | ||
7ab12479 JB |
5815 | struct save_window_data |
5816 | { | |
d0fdb6da | 5817 | EMACS_UINT size; |
7ab12479 | 5818 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 5819 | Lisp_Object selected_frame; |
7ab12479 JB |
5820 | Lisp_Object current_window; |
5821 | Lisp_Object current_buffer; | |
5822 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5823 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5824 | Lisp_Object root_window; |
bdc727bf | 5825 | Lisp_Object focus_frame; |
cbff28e8 RS |
5826 | /* A vector, each of whose elements is a struct saved_window |
5827 | for one window. */ | |
7ab12479 | 5828 | Lisp_Object saved_windows; |
b05b4e27 SM |
5829 | |
5830 | /* All fields above are traced by the GC. | |
5831 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5832 | ||
5833 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5834 | int frame_tool_bar_lines; | |
7ab12479 | 5835 | }; |
ff06df24 | 5836 | |
cbff28e8 | 5837 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5838 | struct saved_window |
ea68264b GM |
5839 | { |
5840 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 5841 | EMACS_UINT size; |
ea68264b | 5842 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 5843 | |
ea68264b GM |
5844 | Lisp_Object window; |
5845 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5846 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5847 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5848 | Lisp_Object parent, prev; |
5849 | Lisp_Object start_at_line_beg; | |
5850 | Lisp_Object display_table; | |
949cf20f KS |
5851 | Lisp_Object orig_top_line, orig_total_lines; |
5852 | Lisp_Object left_margin_cols, right_margin_cols; | |
5853 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5854 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 5855 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
5856 | }; |
5857 | ||
7ab12479 JB |
5858 | #define SAVED_WINDOW_N(swv,n) \ |
5859 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5860 | ||
5861 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5862 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5863 | (Lisp_Object object) |
7ab12479 | 5864 | { |
6ad0381c | 5865 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5866 | } |
5867 | ||
3f8ab7bd | 5868 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5869 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5870 | (Lisp_Object config) |
3f8ab7bd RS |
5871 | { |
5872 | register struct save_window_data *data; | |
5873 | struct Lisp_Vector *saved_windows; | |
5874 | ||
663fbbba | 5875 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5876 | |
5877 | data = (struct save_window_data *) XVECTOR (config); | |
5878 | saved_windows = XVECTOR (data->saved_windows); | |
5879 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5880 | } | |
5881 | ||
d5b2799e | 5882 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5883 | Sset_window_configuration, 1, 1, 0, |
5884 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5885 | CONFIGURATION must be a value previously returned | |
5886 | by `current-window-configuration' (which see). | |
5887 | If CONFIGURATION was made from a frame that is now deleted, | |
5888 | only frame-independent values can be restored. In this case, | |
5889 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5890 | (Lisp_Object configuration) |
7ab12479 | 5891 | { |
7ab12479 JB |
5892 | register struct save_window_data *data; |
5893 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5894 | Lisp_Object new_current_buffer; |
fd482be5 | 5895 | Lisp_Object frame; |
44fa5b1e | 5896 | FRAME_PTR f; |
2452438f | 5897 | EMACS_INT old_point = -1; |
7ab12479 | 5898 | |
663fbbba | 5899 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5900 | |
2f83aebe | 5901 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5902 | saved_windows = XVECTOR (data->saved_windows); |
5903 | ||
7ab12479 | 5904 | new_current_buffer = data->current_buffer; |
265a9e55 | 5905 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5906 | new_current_buffer = Qnil; |
72695e47 | 5907 | else |
73cadfc1 DK |
5908 | { |
5909 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5910 | /* The code further down "preserves point" by saving here PT in |
5911 | old_point and then setting it later back into PT. When the | |
5912 | current-selected-window and the final-selected-window both show | |
5913 | the current buffer, this suffers from the problem that the | |
5914 | current PT is the window-point of the current-selected-window, | |
5915 | while the final PT is the point of the final-selected-window, so | |
5916 | this copy from one PT to the other would end up moving the | |
5917 | window-point of the final-selected-window to the window-point of | |
5918 | the current-selected-window. So we have to be careful which | |
5919 | point of the current-buffer we copy into old_point. */ | |
5920 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5921 | && WINDOWP (selected_window) | |
5922 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5923 | && !EQ (selected_window, data->current_window)) | |
5924 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5925 | else | |
5926 | old_point = PT; | |
73cadfc1 | 5927 | else |
203eb0aa SM |
5928 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5929 | point in new_current_buffer as of the last time this buffer was | |
5930 | used. This can be non-deterministic since it can be changed by | |
5931 | things like jit-lock by mere temporary selection of some random | |
5932 | window that happens to show this buffer. | |
5933 | So if possible we want this arbitrary choice of "which point" to | |
5934 | be the one from the to-be-selected-window so as to prevent this | |
5935 | window's cursor from being copied from another window. */ | |
5936 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5937 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5938 | && !EQ (selected_window, data->current_window)) | |
5939 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5940 | else | |
5941 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5942 | } |
7ab12479 | 5943 | |
fd482be5 JB |
5944 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5945 | f = XFRAME (frame); | |
177c0ea7 | 5946 | |
fd482be5 JB |
5947 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5948 | However, there is other stuff we should still try to do below. */ | |
5949 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5950 | { |
fd482be5 JB |
5951 | register struct window *w; |
5952 | register struct saved_window *p; | |
5500c422 GM |
5953 | struct window *root_window; |
5954 | struct window **leaf_windows; | |
5955 | int n_leaf_windows; | |
c4280705 | 5956 | int k, i, n; |
fd482be5 JB |
5957 | |
5958 | /* If the frame has been resized since this window configuration was | |
5959 | made, we change the frame to the size specified in the | |
5960 | configuration, restore the configuration, and then resize it | |
5961 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5962 | int previous_frame_lines = FRAME_LINES (f); |
5963 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5964 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5965 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5966 | |
d2b35234 RS |
5967 | /* The mouse highlighting code could get screwed up |
5968 | if it runs during this. */ | |
5969 | BLOCK_INPUT; | |
5970 | ||
b05b4e27 SM |
5971 | if (data->frame_lines != previous_frame_lines |
5972 | || data->frame_cols != previous_frame_cols) | |
5973 | change_frame_size (f, data->frame_lines, | |
5974 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5975 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5976 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5977 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5978 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5979 | make_number (0)); | |
4314246f | 5980 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5981 | if (data->frame_tool_bar_lines |
9ea173e8 | 5982 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5983 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5984 | make_number (0)); | |
4314246f | 5985 | #endif |
217f2871 | 5986 | #endif |
fd482be5 | 5987 | |
a46c0153 RS |
5988 | /* "Swap out" point from the selected window's buffer |
5989 | into the window itself. (Normally the pointm of the selected | |
5990 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5991 | restoring the window contents, and prevent it from |
5992 | being done later on when we select a new window. */ | |
596ae0cf RS |
5993 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5994 | { | |
5995 | w = XWINDOW (selected_window); | |
5996 | set_marker_both (w->pointm, | |
5997 | w->buffer, | |
5998 | BUF_PT (XBUFFER (w->buffer)), | |
5999 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6000 | } | |
6001 | ||
fd482be5 | 6002 | windows_or_buffers_changed++; |
29aeee73 | 6003 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6004 | |
5500c422 | 6005 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6006 | is a serious redisplay flickering problem. What we would |
5500c422 | 6007 | really like to do is to free only those matrices not reused |
9d14503e | 6008 | below. */ |
5500c422 GM |
6009 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
6010 | leaf_windows | |
6011 | = (struct window **) alloca (count_windows (root_window) | |
6012 | * sizeof (struct window *)); | |
6013 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6014 | ||
fd482be5 JB |
6015 | /* Kludge Alert! |
6016 | Mark all windows now on frame as "deleted". | |
6017 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6018 | |
fd482be5 JB |
6019 | Save their current buffers in their height fields, since we may |
6020 | need it later, if a buffer saved in the configuration is now | |
6021 | dead. */ | |
6022 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6023 | ||
6024 | for (k = 0; k < saved_windows->size; k++) | |
6025 | { | |
6026 | p = SAVED_WINDOW_N (saved_windows, k); | |
6027 | w = XWINDOW (p->window); | |
6028 | w->next = Qnil; | |
7ab12479 | 6029 | |
fd482be5 JB |
6030 | if (!NILP (p->parent)) |
6031 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6032 | XFASTINT (p->parent))->window; | |
6033 | else | |
6034 | w->parent = Qnil; | |
7ab12479 | 6035 | |
fd482be5 | 6036 | if (!NILP (p->prev)) |
7ab12479 | 6037 | { |
fd482be5 JB |
6038 | w->prev = SAVED_WINDOW_N (saved_windows, |
6039 | XFASTINT (p->prev))->window; | |
6040 | XWINDOW (w->prev)->next = p->window; | |
6041 | } | |
6042 | else | |
6043 | { | |
6044 | w->prev = Qnil; | |
6045 | if (!NILP (w->parent)) | |
6046 | { | |
949cf20f | 6047 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6048 | { |
6049 | XWINDOW (w->parent)->vchild = p->window; | |
6050 | XWINDOW (w->parent)->hchild = Qnil; | |
6051 | } | |
6052 | else | |
6053 | { | |
6054 | XWINDOW (w->parent)->hchild = p->window; | |
6055 | XWINDOW (w->parent)->vchild = Qnil; | |
6056 | } | |
6057 | } | |
6058 | } | |
6059 | ||
6060 | /* If we squirreled away the buffer in the window's height, | |
6061 | restore it now. */ | |
949cf20f KS |
6062 | if (BUFFERP (w->total_lines)) |
6063 | w->buffer = w->total_lines; | |
6064 | w->left_col = p->left_col; | |
6065 | w->top_line = p->top_line; | |
6066 | w->total_cols = p->total_cols; | |
6067 | w->total_lines = p->total_lines; | |
fd482be5 | 6068 | w->hscroll = p->hscroll; |
ea68264b | 6069 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6070 | w->display_table = p->display_table; |
949cf20f KS |
6071 | w->orig_top_line = p->orig_top_line; |
6072 | w->orig_total_lines = p->orig_total_lines; | |
6073 | w->left_margin_cols = p->left_margin_cols; | |
6074 | w->right_margin_cols = p->right_margin_cols; | |
6075 | w->left_fringe_width = p->left_fringe_width; | |
6076 | w->right_fringe_width = p->right_fringe_width; | |
6077 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6078 | w->scroll_bar_width = p->scroll_bar_width; | |
6079 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6080 | w->dedicated = p->dedicated; |
047aaeb9 | 6081 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6082 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6083 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6084 | |
6085 | /* Reinstall the saved buffer and pointers into it. */ | |
6086 | if (NILP (p->buffer)) | |
6087 | w->buffer = p->buffer; | |
6088 | else | |
6089 | { | |
6090 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6091 | /* If saved buffer is alive, install it. */ | |
6092 | { | |
6093 | w->buffer = p->buffer; | |
6094 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6095 | set_marker_restricted (w->start, p->start, w->buffer); |
6096 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6097 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6098 | p->mark, w->buffer); |
fd482be5 JB |
6099 | |
6100 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6101 | restore the location of point in the buffer which was |
6102 | current when the window configuration was recorded. */ | |
6b54027b RS |
6103 | if (!EQ (p->buffer, new_current_buffer) |
6104 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6105 | Fgoto_char (w->pointm); |
6106 | } | |
52a68e98 RS |
6107 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6108 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6109 | { |
fd482be5 JB |
6110 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6111 | /* This will set the markers to beginning of visible | |
6112 | range. */ | |
6113 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6114 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6115 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6116 | } |
6117 | else | |
fd482be5 | 6118 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6119 | are real. */ |
7ab12479 | 6120 | { |
fd482be5 JB |
6121 | /* Set window markers at start of visible range. */ |
6122 | if (XMARKER (w->start)->buffer == 0) | |
6123 | set_marker_restricted (w->start, make_number (0), | |
6124 | w->buffer); | |
6125 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6126 | set_marker_restricted_both (w->pointm, w->buffer, |
6127 | BUF_PT (XBUFFER (w->buffer)), | |
6128 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6129 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6130 | } |
6131 | } | |
6132 | } | |
9ace597f | 6133 | |
fd482be5 | 6134 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6135 | /* Prevent "swapping out point" in the old selected window |
6136 | using the buffer that has been restored into it. | |
a46c0153 | 6137 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6138 | selected_window = Qnil; |
a46c0153 RS |
6139 | |
6140 | /* Arrange *not* to restore point in the buffer that was | |
6141 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6142 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6143 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6144 | make_number (old_point), |
243a5ce6 | 6145 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6146 | |
14d87dc9 | 6147 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6148 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6149 | = selected_window; | |
7ab12479 | 6150 | |
db269683 | 6151 | if (NILP (data->focus_frame) |
017b2bad | 6152 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6153 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6154 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6155 | |
fd482be5 JB |
6156 | #if 0 /* I don't understand why this is needed, and it causes problems |
6157 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6158 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6159 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
c6932ecd | 6160 | 0, 0, Qnil); |
fd482be5 JB |
6161 | #endif |
6162 | ||
6163 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6164 | if (previous_frame_lines != FRAME_LINES (f) |
6165 | || previous_frame_cols != FRAME_COLS (f)) | |
6166 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6167 | 0, 0, 0); |
e3678b64 | 6168 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6169 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6170 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6171 | make_number (0)); | |
4314246f | 6172 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6173 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6174 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6175 | make_number (0)); | |
4314246f | 6176 | #endif |
217f2871 | 6177 | #endif |
d2b35234 | 6178 | |
5500c422 | 6179 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6180 | for (i = n = 0; i < n_leaf_windows; ++i) |
6181 | { | |
6182 | if (NILP (leaf_windows[i]->buffer)) | |
6183 | { | |
6184 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6185 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6186 | && NILP (leaf_windows[i]->vchild)); |
6187 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6188 | } |
6189 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6190 | ++n; | |
6191 | } | |
177c0ea7 | 6192 | |
5500c422 GM |
6193 | adjust_glyphs (f); |
6194 | ||
d2b35234 | 6195 | UNBLOCK_INPUT; |
756b6edc | 6196 | |
478292ed RS |
6197 | /* Fselect_window will have made f the selected frame, so we |
6198 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6199 | selected window too, but that doesn't make the call to | |
6200 | Fselect_window above totally superfluous; it still sets f's | |
6201 | selected window. */ | |
6202 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6203 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6204 | |
eeca6f6f | 6205 | run_window_configuration_change_hook (f); |
478292ed | 6206 | } |
bdc727bf JB |
6207 | |
6208 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6209 | Fset_buffer (new_current_buffer); |
bdc727bf | 6210 | |
478292ed | 6211 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6212 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6213 | |
3f8ab7bd | 6214 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6215 | } |
6216 | ||
44fa5b1e | 6217 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6218 | by setting their buffers to nil. */ |
6219 | ||
fd482be5 | 6220 | void |
971de7fb | 6221 | delete_all_subwindows (register struct window *w) |
7ab12479 | 6222 | { |
265a9e55 | 6223 | if (!NILP (w->next)) |
7ab12479 | 6224 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6225 | if (!NILP (w->vchild)) |
7ab12479 | 6226 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6227 | if (!NILP (w->hchild)) |
7ab12479 | 6228 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6229 | |
949cf20f | 6230 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6231 | |
86e48436 RS |
6232 | if (!NILP (w->buffer)) |
6233 | unshow_buffer (w); | |
6234 | ||
605be8af JB |
6235 | /* We set all three of these fields to nil, to make sure that we can |
6236 | distinguish this dead window from any live window. Live leaf | |
6237 | windows will have buffer set, and combination windows will have | |
6238 | vchild or hchild set. */ | |
6239 | w->buffer = Qnil; | |
6240 | w->vchild = Qnil; | |
6241 | w->hchild = Qnil; | |
acf70840 GM |
6242 | |
6243 | Vwindow_list = Qnil; | |
7ab12479 JB |
6244 | } |
6245 | \f | |
6246 | static int | |
971de7fb | 6247 | count_windows (register struct window *window) |
7ab12479 JB |
6248 | { |
6249 | register int count = 1; | |
265a9e55 | 6250 | if (!NILP (window->next)) |
7ab12479 | 6251 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6252 | if (!NILP (window->vchild)) |
7ab12479 | 6253 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6254 | if (!NILP (window->hchild)) |
7ab12479 JB |
6255 | count += count_windows (XWINDOW (window->hchild)); |
6256 | return count; | |
6257 | } | |
6258 | ||
5500c422 | 6259 | |
177c0ea7 | 6260 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6261 | Value is last index + 1. */ |
6262 | ||
6263 | static int | |
971de7fb | 6264 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
6265 | { |
6266 | while (w) | |
6267 | { | |
6268 | if (!NILP (w->hchild)) | |
6269 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6270 | else if (!NILP (w->vchild)) | |
6271 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6272 | else |
5500c422 GM |
6273 | flat[i++] = w; |
6274 | ||
6275 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6276 | } | |
6277 | ||
6278 | return i; | |
6279 | } | |
6280 | ||
6281 | ||
6282 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6283 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6284 | can be returned. */ | |
6285 | ||
6286 | struct glyph * | |
971de7fb | 6287 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6288 | { |
6289 | struct glyph_row *row; | |
6290 | struct glyph *glyph; | |
6291 | ||
6292 | if (w->phys_cursor.vpos >= 0 | |
6293 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6294 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6295 | row->enabled_p) | |
6296 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6297 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6298 | else | |
6299 | glyph = NULL; | |
6300 | ||
6301 | return glyph; | |
6302 | } | |
6303 | ||
6304 | ||
7ab12479 | 6305 | static int |
971de7fb | 6306 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6307 | { |
6308 | register struct saved_window *p; | |
6309 | register struct window *w; | |
6310 | register Lisp_Object tem; | |
6311 | ||
265a9e55 | 6312 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6313 | { |
6314 | p = SAVED_WINDOW_N (vector, i); | |
6315 | w = XWINDOW (window); | |
6316 | ||
2a1893f4 | 6317 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6318 | p->window = window; |
6319 | p->buffer = w->buffer; | |
949cf20f KS |
6320 | p->left_col = w->left_col; |
6321 | p->top_line = w->top_line; | |
6322 | p->total_cols = w->total_cols; | |
6323 | p->total_lines = w->total_lines; | |
7ab12479 | 6324 | p->hscroll = w->hscroll; |
ea68264b | 6325 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6326 | p->display_table = w->display_table; |
949cf20f KS |
6327 | p->orig_top_line = w->orig_top_line; |
6328 | p->orig_total_lines = w->orig_total_lines; | |
6329 | p->left_margin_cols = w->left_margin_cols; | |
6330 | p->right_margin_cols = w->right_margin_cols; | |
6331 | p->left_fringe_width = w->left_fringe_width; | |
6332 | p->right_fringe_width = w->right_fringe_width; | |
6333 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6334 | p->scroll_bar_width = w->scroll_bar_width; | |
6335 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6336 | p->dedicated = w->dedicated; |
047aaeb9 | 6337 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6338 | if (!NILP (w->buffer)) |
7ab12479 JB |
6339 | { |
6340 | /* Save w's value of point in the window configuration. | |
6341 | If w is the selected window, then get the value of point | |
6342 | from the buffer; pointm is garbage in the selected window. */ | |
6343 | if (EQ (window, selected_window)) | |
6344 | { | |
6345 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6346 | set_marker_both (p->pointm, w->buffer, |
6347 | BUF_PT (XBUFFER (w->buffer)), | |
6348 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6349 | } |
6350 | else | |
eeb82665 | 6351 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6352 | |
eeb82665 | 6353 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6354 | p->start_at_line_beg = w->start_at_line_beg; |
6355 | ||
6356 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6357 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6358 | } |
6359 | else | |
6360 | { | |
6361 | p->pointm = Qnil; | |
6362 | p->start = Qnil; | |
6363 | p->mark = Qnil; | |
6364 | p->start_at_line_beg = Qnil; | |
6365 | } | |
6366 | ||
265a9e55 | 6367 | if (NILP (w->parent)) |
7ab12479 JB |
6368 | p->parent = Qnil; |
6369 | else | |
6370 | p->parent = XWINDOW (w->parent)->temslot; | |
6371 | ||
265a9e55 | 6372 | if (NILP (w->prev)) |
7ab12479 JB |
6373 | p->prev = Qnil; |
6374 | else | |
6375 | p->prev = XWINDOW (w->prev)->temslot; | |
6376 | ||
265a9e55 | 6377 | if (!NILP (w->vchild)) |
7ab12479 | 6378 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6379 | if (!NILP (w->hchild)) |
7ab12479 JB |
6380 | i = save_window_save (w->hchild, vector, i); |
6381 | } | |
6382 | ||
6383 | return i; | |
6384 | } | |
6385 | ||
a0d76c27 | 6386 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6387 | Scurrent_window_configuration, 0, 1, 0, |
6388 | doc: /* Return an object representing the current window configuration of FRAME. | |
6389 | If FRAME is nil or omitted, use the selected frame. | |
6390 | This describes the number of windows, their sizes and current buffers, | |
6391 | and for each displayed buffer, where display starts, and the positions of | |
6392 | point and mark. An exception is made for point in the current buffer: | |
6393 | its value is -not- saved. | |
6394 | This also records the currently selected frame, and FRAME's focus | |
6395 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 6396 | (Lisp_Object frame) |
7ab12479 JB |
6397 | { |
6398 | register Lisp_Object tem; | |
6399 | register int n_windows; | |
6400 | register struct save_window_data *data; | |
6401 | register int i; | |
44fa5b1e | 6402 | FRAME_PTR f; |
43bad991 | 6403 | |
44fa5b1e | 6404 | if (NILP (frame)) |
1ae1a37d | 6405 | frame = selected_frame; |
b7826503 | 6406 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6407 | f = XFRAME (frame); |
7ab12479 | 6408 | |
44fa5b1e | 6409 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6410 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6411 | PVEC_WINDOW_CONFIGURATION); | |
6412 | ||
6413 | data->frame_cols = FRAME_COLS (f); | |
6414 | data->frame_lines = FRAME_LINES (f); | |
6415 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6416 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6417 | data->selected_frame = selected_frame; |
44fa5b1e | 6418 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6419 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6420 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6421 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6422 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6423 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6424 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6425 | data->saved_windows = tem; | |
6426 | for (i = 0; i < n_windows; i++) | |
6427 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6428 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6429 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6430 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6431 | return (tem); |
6432 | } | |
6433 | ||
6434 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6435 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6436 | doc: /* Execute BODY, preserving window sizes and contents. |
6437 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6438 | Restore which buffer appears in which window, where display starts, |
6439 | and the value of point and mark for each window. | |
6440 | Also restore the choice of selected window. | |
6441 | Also restore which buffer is current. | |
6924dda6 | 6442 | Does not restore the value of point in current buffer. |
7254a30c | 6443 | usage: (save-window-excursion BODY...) */) |
5842a27b | 6444 | (Lisp_Object args) |
7ab12479 JB |
6445 | { |
6446 | register Lisp_Object val; | |
aed13378 | 6447 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6448 | |
6449 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6450 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6451 | val = Fprogn (args); |
6452 | return unbind_to (count, val); | |
6453 | } | |
5500c422 | 6454 | |
94e16dd5 KS |
6455 | |
6456 | \f | |
6457 | /*********************************************************************** | |
6458 | Window Split Tree | |
6459 | ***********************************************************************/ | |
6460 | ||
6461 | static Lisp_Object | |
971de7fb | 6462 | window_tree (struct window *w) |
94e16dd5 KS |
6463 | { |
6464 | Lisp_Object tail = Qnil; | |
6465 | Lisp_Object result = Qnil; | |
6466 | ||
6467 | while (w) | |
6468 | { | |
6469 | Lisp_Object wn; | |
6470 | ||
6471 | XSETWINDOW (wn, w); | |
6472 | if (!NILP (w->hchild)) | |
6473 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6474 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6475 | else if (!NILP (w->vchild)) |
6476 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6477 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6478 | |
6479 | if (NILP (result)) | |
6480 | { | |
6481 | result = tail = Fcons (wn, Qnil); | |
6482 | } | |
6483 | else | |
6484 | { | |
6485 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6486 | tail = XCDR (tail); | |
6487 | } | |
6488 | ||
6489 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6490 | } | |
6491 | ||
6492 | return result; | |
6493 | } | |
6494 | ||
6495 | ||
6496 | ||
c16e1cc3 | 6497 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6498 | 0, 1, 0, |
c16e1cc3 | 6499 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6500 | |
6501 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6502 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6503 | is the frame's minibuffer window. |
6504 | ||
6505 | If the root window is not split, ROOT is the root window itself. | |
6506 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6507 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6508 | size and position of the subwindows in the split, and the rest of the |
6509 | elements are the subwindows in the split. Each of the subwindows may | |
6510 | again be a window or a list representing a window split, and so on. | |
6511 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6512 | ||
6513 | If FRAME is nil or omitted, return information on the currently | |
6514 | selected frame. */) | |
5842a27b | 6515 | (Lisp_Object frame) |
94e16dd5 | 6516 | { |
94e16dd5 KS |
6517 | FRAME_PTR f; |
6518 | ||
6519 | if (NILP (frame)) | |
6520 | frame = selected_frame; | |
6521 | ||
6522 | CHECK_FRAME (frame); | |
6523 | f = XFRAME (frame); | |
6524 | ||
6525 | if (!FRAME_LIVE_P (f)) | |
6526 | return Qnil; | |
6527 | ||
c16e1cc3 | 6528 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6529 | } |
6530 | ||
5500c422 GM |
6531 | \f |
6532 | /*********************************************************************** | |
6533 | Marginal Areas | |
6534 | ***********************************************************************/ | |
6535 | ||
6536 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6537 | 2, 3, 0, |
fdb82f93 | 6538 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6539 | If WINDOW is nil, set margins of the currently selected window. |
6540 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6541 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6542 | does the same for the right marginal area. A nil width parameter | |
6543 | means no margin. */) | |
5842a27b | 6544 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
6545 | { |
6546 | struct window *w = decode_window (window); | |
5500c422 | 6547 | |
6b61353c KH |
6548 | /* Translate negative or zero widths to nil. |
6549 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6550 | |
c10ce82e | 6551 | if (!NILP (left_width)) |
6b61353c | 6552 | { |
c10ce82e JB |
6553 | CHECK_NUMBER (left_width); |
6554 | if (XINT (left_width) <= 0) | |
6555 | left_width = Qnil; | |
6b61353c | 6556 | } |
5500c422 | 6557 | |
c10ce82e | 6558 | if (!NILP (right_width)) |
6b61353c | 6559 | { |
c10ce82e JB |
6560 | CHECK_NUMBER (right_width); |
6561 | if (XINT (right_width) <= 0) | |
6562 | right_width = Qnil; | |
6b61353c | 6563 | } |
5500c422 | 6564 | |
c10ce82e JB |
6565 | if (!EQ (w->left_margin_cols, left_width) |
6566 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6567 | { |
c10ce82e JB |
6568 | w->left_margin_cols = left_width; |
6569 | w->right_margin_cols = right_width; | |
949cf20f KS |
6570 | |
6571 | adjust_window_margins (w); | |
6572 | ||
6573 | ++windows_or_buffers_changed; | |
6574 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6575 | } | |
5500c422 | 6576 | |
5500c422 GM |
6577 | return Qnil; |
6578 | } | |
6579 | ||
6580 | ||
6581 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6582 | 0, 1, 0, | |
fdb82f93 PJ |
6583 | doc: /* Get width of marginal areas of window WINDOW. |
6584 | If WINDOW is omitted or nil, use the currently selected window. | |
6585 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6586 | If a marginal area does not exist, its width will be returned | |
6587 | as nil. */) | |
5842a27b | 6588 | (Lisp_Object window) |
5500c422 GM |
6589 | { |
6590 | struct window *w = decode_window (window); | |
949cf20f KS |
6591 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6592 | } | |
6593 | ||
6594 | ||
6595 | \f | |
6596 | /*********************************************************************** | |
6597 | Fringes | |
6598 | ***********************************************************************/ | |
6599 | ||
6600 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6601 | 2, 4, 0, | |
6b61353c KH |
6602 | doc: /* Set the fringe widths of window WINDOW. |
6603 | If WINDOW is nil, set the fringe widths of the currently selected | |
6604 | window. | |
6605 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6606 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6607 | fringe width. If a fringe width arg is nil, that means to use the | |
6608 | frame's default fringe width. Default fringe widths can be set with | |
6609 | the command `set-fringe-style'. | |
6610 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6611 | outside of the display margins. By default, fringes are drawn between | |
6612 | display marginal areas and the text area. */) | |
5842a27b | 6613 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6614 | { |
6615 | struct window *w = decode_window (window); | |
6616 | ||
c10ce82e JB |
6617 | if (!NILP (left_width)) |
6618 | CHECK_NATNUM (left_width); | |
6619 | if (!NILP (right_width)) | |
6620 | CHECK_NATNUM (right_width); | |
5a857365 | 6621 | |
017e297e | 6622 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6623 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6624 | && (!EQ (w->left_fringe_width, left_width) | |
6625 | || !EQ (w->right_fringe_width, right_width) | |
6626 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6627 | { |
c10ce82e JB |
6628 | w->left_fringe_width = left_width; |
6629 | w->right_fringe_width = right_width; | |
949cf20f KS |
6630 | w->fringes_outside_margins = outside_margins; |
6631 | ||
6632 | adjust_window_margins (w); | |
6633 | ||
6634 | clear_glyph_matrix (w->current_matrix); | |
6635 | w->window_end_valid = Qnil; | |
6636 | ||
6637 | ++windows_or_buffers_changed; | |
6638 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6639 | } | |
6640 | ||
6641 | return Qnil; | |
6642 | } | |
6643 | ||
6644 | ||
6645 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6646 | 0, 1, 0, | |
6647 | doc: /* Get width of fringes of window WINDOW. | |
6648 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6649 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6650 | (Lisp_Object window) |
949cf20f KS |
6651 | { |
6652 | struct window *w = decode_window (window); | |
d46c6df5 | 6653 | |
949cf20f KS |
6654 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6655 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6656 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6657 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6658 | } |
6659 | ||
6660 | ||
6661 | \f | |
6662 | /*********************************************************************** | |
6663 | Scroll bars | |
6664 | ***********************************************************************/ | |
6665 | ||
6666 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6667 | 2, 4, 0, | |
6668 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6669 | If window is nil, set scroll bars of the currently selected window. | |
6670 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6671 | this is automatically adjusted to a multiple of the frame column width. | |
6672 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6673 | bar: left, right, or nil. | |
6b61353c | 6674 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6675 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6676 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6677 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6678 | { |
6679 | struct window *w = decode_window (window); | |
6680 | ||
6681 | if (!NILP (width)) | |
0f8fe9a2 SM |
6682 | { |
6683 | CHECK_NATNUM (width); | |
949cf20f | 6684 | |
0f8fe9a2 SM |
6685 | if (XINT (width) == 0) |
6686 | vertical_type = Qnil; | |
6687 | } | |
949cf20f | 6688 | |
413a79ad | 6689 | if (!(NILP (vertical_type) |
0cc1039f | 6690 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6691 | || EQ (vertical_type, Qright) |
6692 | || EQ (vertical_type, Qt))) | |
6693 | error ("Invalid type of vertical scroll bar"); | |
6694 | ||
949cf20f KS |
6695 | if (!EQ (w->scroll_bar_width, width) |
6696 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6697 | { | |
6698 | w->scroll_bar_width = width; | |
6699 | w->vertical_scroll_bar_type = vertical_type; | |
6700 | ||
6701 | adjust_window_margins (w); | |
6702 | ||
6703 | clear_glyph_matrix (w->current_matrix); | |
6704 | w->window_end_valid = Qnil; | |
6705 | ||
6706 | ++windows_or_buffers_changed; | |
6707 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6708 | } | |
6709 | ||
6710 | return Qnil; | |
6711 | } | |
6712 | ||
6713 | ||
6714 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6715 | 0, 1, 0, | |
6716 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6717 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6718 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6719 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6720 | value. */) | |
5842a27b | 6721 | (Lisp_Object window) |
949cf20f KS |
6722 | { |
6723 | struct window *w = decode_window (window); | |
6724 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6725 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6726 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6727 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6728 | Fcons (w->vertical_scroll_bar_type, | |
6729 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6730 | } |
6731 | ||
6732 | ||
7ab12479 | 6733 | \f |
5500c422 GM |
6734 | /*********************************************************************** |
6735 | Smooth scrolling | |
6736 | ***********************************************************************/ | |
6737 | ||
0cc1039f | 6738 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6739 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6740 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6741 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6742 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6743 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6744 | { |
47004952 | 6745 | Lisp_Object result; |
5500c422 GM |
6746 | struct frame *f; |
6747 | struct window *w; | |
177c0ea7 | 6748 | |
5500c422 GM |
6749 | if (NILP (window)) |
6750 | window = selected_window; | |
47004952 | 6751 | else |
b7826503 | 6752 | CHECK_WINDOW (window); |
5500c422 GM |
6753 | w = XWINDOW (window); |
6754 | f = XFRAME (w->frame); | |
177c0ea7 | 6755 | |
5500c422 | 6756 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6757 | result = (NILP (pixels_p) |
6758 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6759 | : make_number (-w->vscroll)); | |
5500c422 | 6760 | else |
47004952 GM |
6761 | result = make_number (0); |
6762 | return result; | |
5500c422 GM |
6763 | } |
6764 | ||
6765 | ||
6766 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6767 | 2, 3, 0, |
fdb82f93 | 6768 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6769 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6770 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6771 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6772 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6773 | corresponds to an integral number of pixels. The return value is the | |
6774 | result of this rounding. | |
6775 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6776 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6777 | { |
6778 | struct window *w; | |
6779 | struct frame *f; | |
177c0ea7 | 6780 | |
5500c422 GM |
6781 | if (NILP (window)) |
6782 | window = selected_window; | |
47004952 | 6783 | else |
b7826503 PJ |
6784 | CHECK_WINDOW (window); |
6785 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6786 | |
5500c422 GM |
6787 | w = XWINDOW (window); |
6788 | f = XFRAME (w->frame); | |
6789 | ||
6790 | if (FRAME_WINDOW_P (f)) | |
6791 | { | |
6792 | int old_dy = w->vscroll; | |
177c0ea7 | 6793 | |
0cc1039f KS |
6794 | w->vscroll = - (NILP (pixels_p) |
6795 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6796 | : XFLOATINT (vscroll)); | |
47004952 | 6797 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6798 | |
e56263e5 KS |
6799 | if (w->vscroll != old_dy) |
6800 | { | |
6801 | /* Adjust glyph matrix of the frame if the virtual display | |
6802 | area becomes larger than before. */ | |
6803 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6804 | adjust_glyphs (f); | |
177c0ea7 | 6805 | |
e56263e5 KS |
6806 | /* Prevent redisplay shortcuts. */ |
6807 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6808 | } | |
5500c422 | 6809 | } |
177c0ea7 | 6810 | |
0cc1039f | 6811 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6812 | } |
177c0ea7 | 6813 | |
7bbb5782 GM |
6814 | \f |
6815 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6816 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6817 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6818 | |
6819 | void | |
971de7fb | 6820 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6821 | { |
56f2de10 | 6822 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6823 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6824 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6825 | } |
6826 | ||
6827 | ||
6828 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6829 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6830 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6831 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6832 | |
67492200 | 6833 | static int |
971de7fb | 6834 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6835 | { |
67492200 | 6836 | int cont; |
177c0ea7 | 6837 | |
67492200 | 6838 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6839 | { |
6840 | if (!NILP (w->hchild)) | |
f95464e4 | 6841 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6842 | else if (!NILP (w->vchild)) |
f95464e4 | 6843 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6844 | else |
0f532a9a | 6845 | cont = fn (w, user_data); |
177c0ea7 | 6846 | |
7bbb5782 GM |
6847 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6848 | } | |
67492200 GM |
6849 | |
6850 | return cont; | |
7bbb5782 GM |
6851 | } |
6852 | ||
6853 | ||
6d194a45 | 6854 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6855 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6856 | the window start. */ |
6857 | ||
67492200 | 6858 | static int |
971de7fb | 6859 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6860 | { |
08c1d235 SM |
6861 | if (MINI_WINDOW_P (w) |
6862 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6863 | && (w == XWINDOW (selected_window) | |
6864 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6865 | && ! NILP (Vminibuf_scroll_window) | |
6866 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6867 | freeze_p = NULL; |
177c0ea7 | 6868 | |
f95464e4 | 6869 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6870 | return 1; |
7bbb5782 GM |
6871 | } |
6872 | ||
6873 | ||
6874 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6875 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6876 | means freeze the window start. */ | |
6877 | ||
6878 | void | |
971de7fb | 6879 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6880 | { |
cbccabec | 6881 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6882 | } |
5500c422 GM |
6883 | |
6884 | \f | |
6885 | /*********************************************************************** | |
6886 | Initialization | |
6887 | ***********************************************************************/ | |
6888 | ||
cbff28e8 | 6889 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 6890 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
6891 | |
6892 | int | |
971de7fb | 6893 | compare_window_configurations (Lisp_Object c1, Lisp_Object c2, int ignore_positions) |
cbff28e8 RS |
6894 | { |
6895 | register struct save_window_data *d1, *d2; | |
6896 | struct Lisp_Vector *sw1, *sw2; | |
6897 | int i; | |
6898 | ||
663fbbba KS |
6899 | CHECK_WINDOW_CONFIGURATION (c1); |
6900 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 6901 | |
cbff28e8 RS |
6902 | d1 = (struct save_window_data *) XVECTOR (c1); |
6903 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6904 | sw1 = XVECTOR (d1->saved_windows); | |
6905 | sw2 = XVECTOR (d2->saved_windows); | |
6906 | ||
b05b4e27 | 6907 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 6908 | return 0; |
b05b4e27 | 6909 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 6910 | return 0; |
b05b4e27 | 6911 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
6912 | return 0; |
6913 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6914 | return 0; | |
6915 | /* Don't compare the current_window field directly. | |
6916 | Instead see w1_is_current and w2_is_current, below. */ | |
6917 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6918 | return 0; | |
2f8274be | 6919 | if (! ignore_positions) |
3f49fddc KS |
6920 | { |
6921 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6922 | return 0; | |
6923 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6924 | return 0; | |
6925 | } | |
cbff28e8 RS |
6926 | /* Don't compare the root_window field. |
6927 | We don't require the two configurations | |
6928 | to use the same window object, | |
6929 | and the two root windows must be equivalent | |
6930 | if everything else compares equal. */ | |
6931 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6932 | return 0; | |
cbff28e8 RS |
6933 | |
6934 | /* Verify that the two confis have the same number of windows. */ | |
6935 | if (sw1->size != sw2->size) | |
6936 | return 0; | |
6937 | ||
6938 | for (i = 0; i < sw1->size; i++) | |
6939 | { | |
6940 | struct saved_window *p1, *p2; | |
6941 | int w1_is_current, w2_is_current; | |
6942 | ||
6943 | p1 = SAVED_WINDOW_N (sw1, i); | |
6944 | p2 = SAVED_WINDOW_N (sw2, i); | |
6945 | ||
6946 | /* Verify that the current windows in the two | |
6947 | configurations correspond to each other. */ | |
6948 | w1_is_current = EQ (d1->current_window, p1->window); | |
6949 | w2_is_current = EQ (d2->current_window, p2->window); | |
6950 | ||
6951 | if (w1_is_current != w2_is_current) | |
6952 | return 0; | |
6953 | ||
6954 | /* Verify that the corresponding windows do match. */ | |
6955 | if (! EQ (p1->buffer, p2->buffer)) | |
6956 | return 0; | |
949cf20f | 6957 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6958 | return 0; |
949cf20f | 6959 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6960 | return 0; |
949cf20f | 6961 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6962 | return 0; |
949cf20f | 6963 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6964 | return 0; |
cbff28e8 RS |
6965 | if (! EQ (p1->display_table, p2->display_table)) |
6966 | return 0; | |
6967 | if (! EQ (p1->parent, p2->parent)) | |
6968 | return 0; | |
6969 | if (! EQ (p1->prev, p2->prev)) | |
6970 | return 0; | |
2f8274be RS |
6971 | if (! ignore_positions) |
6972 | { | |
6973 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6974 | return 0; | |
ea68264b GM |
6975 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6976 | return 0; | |
2f8274be RS |
6977 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6978 | return 0; | |
6979 | if (NILP (Fequal (p1->start, p2->start))) | |
6980 | return 0; | |
6981 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
6982 | return 0; | |
6983 | if (NILP (Fequal (p1->mark, p2->mark))) | |
6984 | return 0; | |
6985 | } | |
949cf20f KS |
6986 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
6987 | return 0; | |
6988 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
6989 | return 0; | |
6990 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
6991 | return 0; | |
6992 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
6993 | return 0; | |
6994 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
6995 | return 0; | |
6996 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
6997 | return 0; | |
6998 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
6999 | return 0; | |
cbff28e8 RS |
7000 | } |
7001 | ||
7002 | return 1; | |
7003 | } | |
2f8274be RS |
7004 | |
7005 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7006 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7007 | doc: /* Compare two window configurations as regards the structure of windows. |
7008 | This function ignores details such as the values of point and mark | |
7009 | and scrolling positions. */) | |
5842a27b | 7010 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
7011 | { |
7012 | if (compare_window_configurations (x, y, 1)) | |
7013 | return Qt; | |
7014 | return Qnil; | |
7015 | } | |
cbff28e8 | 7016 | \f |
dfcf069d | 7017 | void |
971de7fb | 7018 | init_window_once (void) |
7ab12479 | 7019 | { |
3224dac1 | 7020 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7021 | XSETFRAME (selected_frame, f); |
7022 | Vterminal_frame = selected_frame; | |
7023 | minibuf_window = f->minibuffer_window; | |
7024 | selected_window = f->selected_window; | |
7025 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7026 | |
7027 | window_initialized = 1; | |
7ab12479 JB |
7028 | } |
7029 | ||
67492200 | 7030 | void |
971de7fb | 7031 | init_window (void) |
67492200 GM |
7032 | { |
7033 | Vwindow_list = Qnil; | |
7034 | } | |
7035 | ||
dfcf069d | 7036 | void |
971de7fb | 7037 | syms_of_window (void) |
7ab12479 | 7038 | { |
d67b4f80 | 7039 | Qscroll_up = intern_c_string ("scroll-up"); |
c525d842 CY |
7040 | staticpro (&Qscroll_up); |
7041 | ||
d67b4f80 | 7042 | Qscroll_down = intern_c_string ("scroll-down"); |
c525d842 CY |
7043 | staticpro (&Qscroll_down); |
7044 | ||
a4b000fb JL |
7045 | Qscroll_command = intern_c_string ("scroll-command"); |
7046 | staticpro (&Qscroll_command); | |
7047 | ||
7048 | Fput (Qscroll_up, Qscroll_command, Qt); | |
7049 | Fput (Qscroll_down, Qscroll_command, Qt); | |
7050 | ||
d67b4f80 | 7051 | Qwindow_size_fixed = intern_c_string ("window-size-fixed"); |
8a37516b | 7052 | staticpro (&Qwindow_size_fixed); |
c0e7ccd3 | 7053 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7054 | |
543f5fb1 RS |
7055 | staticpro (&Qwindow_configuration_change_hook); |
7056 | Qwindow_configuration_change_hook | |
d67b4f80 | 7057 | = intern_c_string ("window-configuration-change-hook"); |
543f5fb1 | 7058 | |
d67b4f80 | 7059 | Qwindowp = intern_c_string ("windowp"); |
7ab12479 JB |
7060 | staticpro (&Qwindowp); |
7061 | ||
d67b4f80 | 7062 | Qwindow_configuration_p = intern_c_string ("window-configuration-p"); |
3f8ab7bd RS |
7063 | staticpro (&Qwindow_configuration_p); |
7064 | ||
d67b4f80 | 7065 | Qwindow_live_p = intern_c_string ("window-live-p"); |
806b4d9b | 7066 | staticpro (&Qwindow_live_p); |
605be8af | 7067 | |
d67b4f80 | 7068 | Qdisplay_buffer = intern_c_string ("display-buffer"); |
87478b52 SM |
7069 | staticpro (&Qdisplay_buffer); |
7070 | ||
d67b4f80 | 7071 | Qtemp_buffer_show_hook = intern_c_string ("temp-buffer-show-hook"); |
a58ec57d RS |
7072 | staticpro (&Qtemp_buffer_show_hook); |
7073 | ||
67492200 | 7074 | staticpro (&Vwindow_list); |
8bfb170b KS |
7075 | |
7076 | minibuf_selected_window = Qnil; | |
3dbab091 | 7077 | staticpro (&minibuf_selected_window); |
67492200 | 7078 | |
c876b227 | 7079 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7080 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7081 | window_scroll_preserve_hpos = -1; |
7082 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7083 | |
7ab12479 | 7084 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7085 | doc: /* Non-nil means call as function to display a help buffer. |
7086 | The function is called with one argument, the buffer to be displayed. | |
7087 | Used by `with-output-to-temp-buffer'. | |
7088 | If this function is used, then it must do the entire job of showing | |
7089 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7090 | Vtemp_buffer_show_function = Qnil; |
7091 | ||
7ab12479 | 7092 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7093 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7094 | Vminibuf_scroll_window = Qnil; |
7095 | ||
cc91894c | 7096 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7097 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7098 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7099 | is displayed in the `mode-line' face. */); | |
7100 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7101 | |
7ab12479 | 7102 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7103 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7104 | Vother_window_scroll_buffer = Qnil; |
7105 | ||
e56263e5 KS |
7106 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7107 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7108 | auto_window_vscroll_p = 1; | |
7109 | ||
7ab12479 | 7110 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, |
fdb82f93 | 7111 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7112 | next_screen_context_lines = 2; |
7113 | ||
7ab12479 | 7114 | DEFVAR_INT ("window-min-height", &window_min_height, |
047aaeb9 MR |
7115 | doc: /* Allow deleting windows less than this tall. |
7116 | The value is measured in line units. If a window wants a modeline it | |
7117 | is counted as one line. | |
7118 | ||
7119 | Emacs honors settings of this variable when enlarging or shrinking | |
7120 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7121 | window_min_height = 4; |
7122 | ||
7123 | DEFVAR_INT ("window-min-width", &window_min_width, | |
047aaeb9 MR |
7124 | doc: /* Allow deleting windows less than this wide. |
7125 | The value is measured in characters and includes any fringes or | |
7126 | the scrollbar. | |
7127 | ||
7128 | Emacs honors settings of this variable when enlarging or shrinking | |
7129 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7130 | window_min_width = 10; |
7131 | ||
5500c422 GM |
7132 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7133 | &Vscroll_preserve_screen_position, | |
c876b227 | 7134 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7135 | A value of nil means point does not keep its screen position except |
7136 | at the scroll margin or window boundary respectively. | |
7137 | A value of t means point keeps its screen position if the scroll | |
7138 | command moved it vertically out of the window, e.g. when scrolling | |
7139 | by full screens. | |
9013a7f8 | 7140 | Any other value means point always keeps its screen position. |
a4b000fb JL |
7141 | Scroll commands should have the `scroll-command' property |
7142 | on their symbols to be controlled by this variable. */); | |
5500c422 | 7143 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7144 | |
a1562258 SM |
7145 | DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type, |
7146 | doc: /* Type of marker to use for `window-point'. */); | |
7147 | Vwindow_point_insertion_type = Qnil; | |
7148 | ||
543f5fb1 RS |
7149 | DEFVAR_LISP ("window-configuration-change-hook", |
7150 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7151 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7152 | The buffer-local part is run once per window, with the relevant window |
7153 | selected; while the global part is run only once for the modified frame, | |
7154 | with the relevant frame selected. */); | |
543f5fb1 RS |
7155 | Vwindow_configuration_change_hook = Qnil; |
7156 | ||
666e158e MB |
7157 | DEFVAR_LISP ("recenter-redisplay", &Vrecenter_redisplay, |
7158 | doc: /* If non-nil, then the `recenter' command with a nil argument | |
6e6e5760 | 7159 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
7160 | frame to be redrawn only if it is a tty frame. */); |
7161 | Vrecenter_redisplay = Qtty; | |
7162 | ||
7163 | ||
7ab12479 JB |
7164 | defsubr (&Sselected_window); |
7165 | defsubr (&Sminibuffer_window); | |
7166 | defsubr (&Swindow_minibuffer_p); | |
7167 | defsubr (&Swindowp); | |
806b4d9b | 7168 | defsubr (&Swindow_live_p); |
7ab12479 | 7169 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7170 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7171 | defsubr (&Swindow_buffer); |
7172 | defsubr (&Swindow_height); | |
7173 | defsubr (&Swindow_width); | |
35ea56c9 | 7174 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7175 | defsubr (&Swindow_hscroll); |
7176 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7177 | defsubr (&Swindow_redisplay_end_trigger); |
7178 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7179 | defsubr (&Swindow_edges); |
c99a9eb3 | 7180 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 7181 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
7182 | defsubr (&Swindow_inside_edges); |
7183 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 7184 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
7185 | defsubr (&Scoordinates_in_window_p); |
7186 | defsubr (&Swindow_at); | |
7ab12479 JB |
7187 | defsubr (&Swindow_point); |
7188 | defsubr (&Swindow_start); | |
7189 | defsubr (&Swindow_end); | |
7190 | defsubr (&Sset_window_point); | |
7191 | defsubr (&Sset_window_start); | |
7192 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7193 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7194 | defsubr (&Swindow_display_table); |
7195 | defsubr (&Sset_window_display_table); | |
7196 | defsubr (&Snext_window); | |
7197 | defsubr (&Sprevious_window); | |
7198 | defsubr (&Sother_window); | |
7199 | defsubr (&Sget_lru_window); | |
7200 | defsubr (&Sget_largest_window); | |
7201 | defsubr (&Sget_buffer_window); | |
7202 | defsubr (&Sdelete_other_windows); | |
7203 | defsubr (&Sdelete_windows_on); | |
7204 | defsubr (&Sreplace_buffer_in_windows); | |
7205 | defsubr (&Sdelete_window); | |
7206 | defsubr (&Sset_window_buffer); | |
7207 | defsubr (&Sselect_window); | |
6b61353c | 7208 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7209 | defsubr (&Ssplit_window); |
7210 | defsubr (&Senlarge_window); | |
7211 | defsubr (&Sshrink_window); | |
0d384044 | 7212 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7213 | defsubr (&Sscroll_up); |
7214 | defsubr (&Sscroll_down); | |
7215 | defsubr (&Sscroll_left); | |
7216 | defsubr (&Sscroll_right); | |
ccd0664b | 7217 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7218 | defsubr (&Sscroll_other_window); |
fa832261 | 7219 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7220 | defsubr (&Srecenter); |
81fe0836 | 7221 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7222 | defsubr (&Smove_to_window_line); |
7223 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7224 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7225 | defsubr (&Sset_window_configuration); |
7226 | defsubr (&Scurrent_window_configuration); | |
7227 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7228 | defsubr (&Swindow_tree); |
5500c422 GM |
7229 | defsubr (&Sset_window_margins); |
7230 | defsubr (&Swindow_margins); | |
949cf20f KS |
7231 | defsubr (&Sset_window_fringes); |
7232 | defsubr (&Swindow_fringes); | |
7233 | defsubr (&Sset_window_scroll_bars); | |
7234 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7235 | defsubr (&Swindow_vscroll); |
7236 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7237 | defsubr (&Scompare_window_configurations); |
67492200 | 7238 | defsubr (&Swindow_list); |
cfbb2395 JB |
7239 | defsubr (&Swindow_parameters); |
7240 | defsubr (&Swindow_parameter); | |
7241 | defsubr (&Sset_window_parameter); | |
7242 | ||
7ab12479 JB |
7243 | } |
7244 | ||
dfcf069d | 7245 | void |
971de7fb | 7246 | keys_of_window (void) |
7ab12479 JB |
7247 | { |
7248 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7249 | initial_define_key (control_x_map, '2', "split-window"); | |
7250 | initial_define_key (control_x_map, '0', "delete-window"); | |
7251 | initial_define_key (control_x_map, 'o', "other-window"); | |
7252 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7253 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7254 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7255 | ||
32129746 | 7256 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 7257 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 7258 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 7259 | } |
6b61353c KH |
7260 | |
7261 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7262 | (do not change this comment) */ |