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 | ||
fbad6f9a | 758 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 759 | If it is not, return ON_NOTHING; |
d5783c40 JB |
760 | if it is in the window's text area, |
761 | set *x and *y to its location relative to the upper left corner | |
762 | of the window, and | |
341f3858 KS |
763 | return ON_TEXT; |
764 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 765 | if it is on the border between the window and its right sibling, |
341f3858 | 766 | return ON_VERTICAL_BORDER. |
6487f669 RS |
767 | if it is on a scroll bar, |
768 | return ON_SCROLL_BAR. | |
341f3858 | 769 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 770 | if it is in left or right fringe of the window, |
341f3858 KS |
771 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
772 | to window-relative coordinates; | |
49b996e7 | 773 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
774 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
775 | to window-relative coordinates. | |
5500c422 GM |
776 | |
777 | X and Y are frame relative pixel coordinates. */ | |
778 | ||
7442878f | 779 | static enum window_part |
971de7fb | 780 | coordinates_in_window (register struct window *w, register int *x, register int *y) |
d5783c40 | 781 | { |
b0228ace GM |
782 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
783 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 784 | enum window_part part; |
949cf20f KS |
785 | int ux = FRAME_COLUMN_WIDTH (f); |
786 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
787 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
788 | /* The width of the area where the vertical line can be dragged. |
789 | (Between mode lines for instance. */ | |
790 | int grabbable_width = ux; | |
949cf20f | 791 | int lmargin_width, rmargin_width, text_left, text_right; |
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 KS |
798 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
799 | top_y = WINDOW_TOP_EDGE_Y (w); | |
800 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
801 | } |
802 | else | |
803 | { | |
949cf20f KS |
804 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
805 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
806 | top_y = WINDOW_TOP_EDGE_Y (w); | |
807 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 808 | } |
37962e60 | 809 | |
949cf20f KS |
810 | /* Outside any interesting row? */ |
811 | if (*y < top_y || *y >= bottom_y) | |
812 | return ON_NOTHING; | |
813 | ||
1cb794ba GM |
814 | /* On the mode line or header line? If it's near the start of |
815 | the mode or header line of window that's has a horizontal | |
816 | sibling, say it's on the vertical line. That's to be able | |
817 | to resize windows horizontally in case we're using toolkit | |
818 | scroll bars. */ | |
b0228ace | 819 | |
1cb794ba | 820 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 821 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 822 | { |
949cf20f KS |
823 | part = ON_MODE_LINE; |
824 | ||
825 | header_vertical_border_check: | |
b0228ace GM |
826 | /* We're somewhere on the mode line. We consider the place |
827 | between mode lines of horizontally adjacent mode lines | |
9d14503e | 828 | as the vertical border. If scroll bars on the left, |
b0228ace | 829 | return the right window. */ |
949cf20f KS |
830 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
831 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 832 | { |
1ea40aa2 | 833 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 834 | { |
3f489dc7 KS |
835 | /* Convert X and Y to window relative coordinates. |
836 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
837 | *x = max (0, *x - x0); |
838 | *y -= top_y; | |
839 | return ON_VERTICAL_BORDER; | |
840 | } | |
b0228ace | 841 | } |
79fd290e | 842 | else |
b0228ace | 843 | { |
f6ef1e65 MR |
844 | /* Make sure we're not at the rightmost position of a |
845 | mode-/header-line and there's yet another window on | |
846 | the right. (Bug#1372) */ | |
847 | if ((WINDOW_RIGHTMOST_P (w) || *x < x1) | |
848 | && eabs (*x - x1) < grabbable_width) | |
f8c62b70 | 849 | { |
3f489dc7 KS |
850 | /* Convert X and Y to window relative coordinates. |
851 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
852 | *x = min (x1, *x) - x0; |
853 | *y -= top_y; | |
854 | return ON_VERTICAL_BORDER; | |
855 | } | |
b0228ace | 856 | } |
949cf20f | 857 | |
cb639b8f KS |
858 | if (*x < x0 || *x >= x1) |
859 | return ON_NOTHING; | |
860 | ||
a5303820 KS |
861 | /* Convert X and Y to window relative coordinates. |
862 | Mode line starts at left edge of window. */ | |
863 | *x -= x0; | |
864 | *y -= top_y; | |
949cf20f | 865 | return part; |
b0228ace | 866 | } |
949cf20f KS |
867 | |
868 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 869 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 870 | { |
949cf20f KS |
871 | part = ON_HEADER_LINE; |
872 | goto header_vertical_border_check; | |
1cb794ba | 873 | } |
949cf20f | 874 | |
cb639b8f KS |
875 | if (*x < x0 || *x >= x1) |
876 | return ON_NOTHING; | |
877 | ||
949cf20f KS |
878 | /* Outside any interesting column? */ |
879 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
880 | { |
881 | *y -= top_y; | |
882 | return ON_SCROLL_BAR; | |
883 | } | |
949cf20f KS |
884 | |
885 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
886 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 887 | |
949cf20f KS |
888 | text_left = window_box_left (w, TEXT_AREA); |
889 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
890 | ||
891 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 892 | { |
447e9da0 | 893 | if (!w->pseudo_window_p |
949cf20f | 894 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 895 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 896 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 897 | { |
3f489dc7 KS |
898 | /* Convert X and Y to window relative coordinates. |
899 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
900 | *x = min (right_x, *x) - left_x; |
901 | *y -= top_y; | |
902 | return ON_VERTICAL_BORDER; | |
903 | } | |
fbad6f9a | 904 | } |
447e9da0 GM |
905 | else |
906 | { | |
907 | /* Need to say "*x > right_x" rather than >=, since on character | |
908 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
909 | if (!w->pseudo_window_p |
910 | && !WINDOW_RIGHTMOST_P (w) | |
911 | && *x > right_x - ux) | |
b0228ace GM |
912 | { |
913 | /* On the border on the right side of the window? Assume that | |
914 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
915 | *x = min (right_x, *x) - left_x; |
916 | *y -= top_y; | |
949cf20f | 917 | return ON_VERTICAL_BORDER; |
b0228ace | 918 | } |
447e9da0 | 919 | } |
b0228ace | 920 | |
949cf20f KS |
921 | if (*x < text_left) |
922 | { | |
923 | if (lmargin_width > 0 | |
924 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
925 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
926 | : (*x < left_x + lmargin_width))) | |
a5303820 | 927 | { |
6b61353c | 928 | *x -= left_x; |
a5303820 KS |
929 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
930 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
931 | *y -= top_y; | |
932 | return ON_LEFT_MARGIN; | |
933 | } | |
949cf20f KS |
934 | |
935 | /* Convert X and Y to window-relative pixel coordinates. */ | |
936 | *x -= left_x; | |
937 | *y -= top_y; | |
938 | return ON_LEFT_FRINGE; | |
939 | } | |
940 | ||
941 | if (*x >= text_right) | |
942 | { | |
943 | if (rmargin_width > 0 | |
944 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
945 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
946 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 947 | { |
66d41723 KS |
948 | *x -= right_x - rmargin_width; |
949 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
950 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
951 | *y -= top_y; |
952 | return ON_RIGHT_MARGIN; | |
953 | } | |
949cf20f KS |
954 | |
955 | /* Convert X and Y to window-relative pixel coordinates. */ | |
956 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
957 | *y -= top_y; | |
958 | return ON_RIGHT_FRINGE; | |
959 | } | |
960 | ||
961 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 962 | *x -= text_left; |
949cf20f KS |
963 | *y -= top_y; |
964 | return ON_TEXT; | |
d5783c40 JB |
965 | } |
966 | ||
b0228ace | 967 | |
d5783c40 | 968 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
969 | Scoordinates_in_window_p, 2, 2, 0, |
970 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
971 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
972 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 973 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
974 | frame. |
975 | If COORDINATES are in the text portion of WINDOW, | |
976 | the coordinates relative to the window are returned. | |
977 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
978 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
979 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
980 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 981 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
982 | `vertical-line' is returned. |
983 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
984 | or `right-margin' is returned. */) | |
5842a27b | 985 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 986 | { |
5500c422 GM |
987 | struct window *w; |
988 | struct frame *f; | |
d5783c40 | 989 | int x, y; |
5500c422 | 990 | Lisp_Object lx, ly; |
d5783c40 | 991 | |
6b61353c | 992 | CHECK_WINDOW (window); |
5500c422 GM |
993 | w = XWINDOW (window); |
994 | f = XFRAME (w->frame); | |
b7826503 | 995 | CHECK_CONS (coordinates); |
5500c422 GM |
996 | lx = Fcar (coordinates); |
997 | ly = Fcdr (coordinates); | |
b7826503 PJ |
998 | CHECK_NUMBER_OR_FLOAT (lx); |
999 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1000 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1001 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
1002 | |
1003 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 1004 | { |
7442878f | 1005 | case ON_NOTHING: |
d5783c40 JB |
1006 | return Qnil; |
1007 | ||
7442878f GM |
1008 | case ON_TEXT: |
1009 | /* X and Y are now window relative pixel coordinates. Convert | |
1010 | them to canonical char units before returning them. */ | |
949cf20f KS |
1011 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1012 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1013 | |
7442878f | 1014 | case ON_MODE_LINE: |
d5783c40 | 1015 | return Qmode_line; |
37962e60 | 1016 | |
7442878f | 1017 | case ON_VERTICAL_BORDER: |
e5d77022 | 1018 | return Qvertical_line; |
d5783c40 | 1019 | |
7442878f | 1020 | case ON_HEADER_LINE: |
045dee35 | 1021 | return Qheader_line; |
5500c422 | 1022 | |
7442878f GM |
1023 | case ON_LEFT_FRINGE: |
1024 | return Qleft_fringe; | |
177c0ea7 | 1025 | |
7442878f GM |
1026 | case ON_RIGHT_FRINGE: |
1027 | return Qright_fringe; | |
fbad6f9a | 1028 | |
49b996e7 GM |
1029 | case ON_LEFT_MARGIN: |
1030 | return Qleft_margin; | |
177c0ea7 | 1031 | |
49b996e7 GM |
1032 | case ON_RIGHT_MARGIN: |
1033 | return Qright_margin; | |
1034 | ||
6487f669 RS |
1035 | case ON_SCROLL_BAR: |
1036 | /* Historically we are supposed to return nil in this case. */ | |
1037 | return Qnil; | |
1038 | ||
d5783c40 JB |
1039 | default: |
1040 | abort (); | |
1041 | } | |
1042 | } | |
1043 | ||
67492200 GM |
1044 | |
1045 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1046 | Check if window W contains coordinates specified by USER_DATA which |
1047 | is actually a pointer to a struct check_window_data CW. | |
1048 | ||
1049 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1050 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1051 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1052 | zero from this function to stop iterating over windows. */ |
1053 | ||
1054 | struct check_window_data | |
1055 | { | |
1056 | Lisp_Object *window; | |
341f3858 KS |
1057 | int *x, *y; |
1058 | enum window_part *part; | |
f95464e4 | 1059 | }; |
67492200 GM |
1060 | |
1061 | static int | |
971de7fb | 1062 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1063 | { |
f95464e4 | 1064 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1065 | enum window_part found; |
1066 | int continue_p = 1; | |
67492200 | 1067 | |
f95464e4 | 1068 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1069 | if (found != ON_NOTHING) |
67492200 | 1070 | { |
341f3858 | 1071 | *cw->part = found; |
f95464e4 | 1072 | XSETWINDOW (*cw->window, w); |
7442878f | 1073 | continue_p = 0; |
67492200 | 1074 | } |
177c0ea7 | 1075 | |
7442878f | 1076 | return continue_p; |
67492200 GM |
1077 | } |
1078 | ||
1079 | ||
5500c422 | 1080 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1081 | return it as a Lisp_Object. |
1082 | ||
1083 | If X, Y is on one of the window's special `window_part' elements, | |
1084 | set *PART to the id of that element, and return X and Y converted | |
1085 | to window relative coordinates in WX and WY. | |
1086 | ||
341f3858 | 1087 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1088 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1089 | ||
1090 | This function was previously implemented with a loop cycling over | |
1091 | windows with Fnext_window, and starting with the frame's selected | |
1092 | window. It turned out that this doesn't work with an | |
1093 | implementation of next_window using Vwindow_list, because | |
1094 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1095 | tree of F when this function is called asynchronously from | |
1096 | note_mouse_highlight. The original loop didn't terminate in this | |
1097 | case. */ | |
5500c422 | 1098 | |
7ab12479 | 1099 | Lisp_Object |
971de7fb | 1100 | window_from_coordinates (struct frame *f, int x, int y, enum window_part *part, int *wx, int *wy, int tool_bar_p) |
7ab12479 | 1101 | { |
67492200 | 1102 | Lisp_Object window; |
f95464e4 | 1103 | struct check_window_data cw; |
341f3858 KS |
1104 | enum window_part dummy; |
1105 | ||
1106 | if (part == 0) | |
1107 | part = &dummy; | |
5500c422 | 1108 | |
67492200 | 1109 | window = Qnil; |
f95464e4 GM |
1110 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1111 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1112 | |
67492200 GM |
1113 | /* If not found above, see if it's in the tool bar window, if a tool |
1114 | bar exists. */ | |
1115 | if (NILP (window) | |
1116 | && tool_bar_p | |
1117 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1118 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1119 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1120 | != ON_NOTHING)) | |
5500c422 | 1121 | { |
341f3858 | 1122 | *part = ON_TEXT; |
67492200 | 1123 | window = f->tool_bar_window; |
5500c422 | 1124 | } |
37962e60 | 1125 | |
949cf20f KS |
1126 | if (wx) *wx = x; |
1127 | if (wy) *wy = y; | |
1128 | ||
67492200 | 1129 | return window; |
7ab12479 JB |
1130 | } |
1131 | ||
ab17c3f2 | 1132 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1133 | doc: /* Return window containing coordinates X and Y on FRAME. |
1134 | If omitted, FRAME defaults to the currently selected frame. | |
1135 | The top left corner of the frame is considered to be row 0, | |
1136 | column 0. */) | |
5842a27b | 1137 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1138 | { |
5500c422 | 1139 | struct frame *f; |
7ab12479 | 1140 | |
44fa5b1e | 1141 | if (NILP (frame)) |
1ae1a37d | 1142 | frame = selected_frame; |
b7826503 | 1143 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1144 | f = XFRAME (frame); |
7ab12479 | 1145 | |
5500c422 | 1146 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1147 | CHECK_NUMBER_OR_FLOAT (x); |
1148 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1149 | |
177c0ea7 | 1150 | return window_from_coordinates (f, |
2c77cf3b RS |
1151 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1152 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1153 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1154 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1155 | 0, 0, 0, 0); |
7ab12479 JB |
1156 | } |
1157 | ||
1158 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1159 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1160 | WINDOW defaults to the selected window. |
1161 | ||
fdb82f93 PJ |
1162 | For a nonselected window, this is the value point would have |
1163 | if that window were selected. | |
1164 | ||
1165 | Note that, when WINDOW is the selected window and its buffer | |
1166 | is also currently selected, the value returned is the same as (point). | |
1167 | It would be more strictly correct to return the `top-level' value | |
1168 | of point, outside of any save-excursion forms. | |
1169 | But that is hard to define. */) | |
5842a27b | 1170 | (Lisp_Object window) |
7ab12479 JB |
1171 | { |
1172 | register struct window *w = decode_window (window); | |
1173 | ||
1174 | if (w == XWINDOW (selected_window) | |
1175 | && current_buffer == XBUFFER (w->buffer)) | |
1176 | return Fpoint (); | |
1177 | return Fmarker_position (w->pointm); | |
1178 | } | |
1179 | ||
1180 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1181 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1182 | WINDOW defaults to the selected window. |
fdb82f93 | 1183 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1184 | (Lisp_Object window) |
7ab12479 JB |
1185 | { |
1186 | return Fmarker_position (decode_window (window)->start); | |
1187 | } | |
1188 | ||
8646118f RS |
1189 | /* This is text temporarily removed from the doc string below. |
1190 | ||
fdb82f93 PJ |
1191 | This function returns nil if the position is not currently known. |
1192 | That happens when redisplay is preempted and doesn't finish. | |
1193 | If in that case you want to compute where the end of the window would | |
1194 | have been if redisplay had finished, do this: | |
1195 | (save-excursion | |
1196 | (goto-char (window-start window)) | |
1197 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1198 | (point))") */ |
1199 | ||
478292ed | 1200 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1201 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1202 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1203 | This is updated by redisplay, when it runs to completion. |
1204 | Simply changing the buffer text or setting `window-start' | |
1205 | does not update this value. | |
a0a37a6f LT |
1206 | Return nil if there is no recorded value. \(This can happen if the |
1207 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1208 | If UPDATE is non-nil, compute the up-to-date position |
1209 | if it isn't already recorded. */) | |
5842a27b | 1210 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1211 | { |
1212 | Lisp_Object value; | |
1213 | struct window *w = decode_window (window); | |
5a41ab94 | 1214 | Lisp_Object buf; |
31790df3 | 1215 | struct buffer *b; |
5a41ab94 RS |
1216 | |
1217 | buf = w->buffer; | |
b7826503 | 1218 | CHECK_BUFFER (buf); |
b3a10345 | 1219 | b = XBUFFER (buf); |
5a41ab94 | 1220 | |
8646118f | 1221 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1222 | /* If we don't know the end position, return nil. |
1223 | The user can compute it with vertical-motion if he wants to. | |
1224 | It would be nicer to do it automatically, | |
1225 | but that's so slow that it would probably bother people. */ | |
1226 | if (NILP (w->window_end_valid)) | |
1227 | return Qnil; | |
8646118f | 1228 | #endif |
7250968e | 1229 | |
478292ed RS |
1230 | if (! NILP (update) |
1231 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1232 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1233 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1234 | && !noninteractive) |
478292ed | 1235 | { |
cbc099e5 GM |
1236 | struct text_pos startp; |
1237 | struct it it; | |
b3a10345 KS |
1238 | struct buffer *old_buffer = NULL; |
1239 | ||
1240 | /* Cannot use Fvertical_motion because that function doesn't | |
1241 | cope with variable-height lines. */ | |
1242 | if (b != current_buffer) | |
1243 | { | |
1244 | old_buffer = current_buffer; | |
1245 | set_buffer_internal (b); | |
1246 | } | |
2d6d9df0 GM |
1247 | |
1248 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1249 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1250 | `-l' containing a call to `rmail' with subsequent other |
1251 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1252 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1253 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1254 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1255 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1256 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1257 | else |
cbc099e5 GM |
1258 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1259 | ||
cbc099e5 GM |
1260 | start_display (&it, w, startp); |
1261 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1262 | if (it.current_y < it.last_visible_y) |
1263 | move_it_past_eol (&it); | |
cbc099e5 | 1264 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1265 | |
99593a9d GM |
1266 | if (old_buffer) |
1267 | set_buffer_internal (old_buffer); | |
478292ed RS |
1268 | } |
1269 | else | |
b3a10345 | 1270 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1271 | |
1272 | return value; | |
1273 | } | |
1274 | ||
1275 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1276 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1277 | Return POS. */) | |
5842a27b | 1278 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1279 | { |
1280 | register struct window *w = decode_window (window); | |
1281 | ||
b7826503 | 1282 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1283 | if (w == XWINDOW (selected_window) |
1284 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1285 | Fgoto_char (pos); |
1286 | else | |
1287 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1288 | |
0685cb3c GM |
1289 | /* We have to make sure that redisplay updates the window to show |
1290 | the new value of point. */ | |
1291 | if (!EQ (window, selected_window)) | |
799417bd | 1292 | ++windows_or_buffers_changed; |
177c0ea7 | 1293 | |
7ab12479 JB |
1294 | return pos; |
1295 | } | |
1296 | ||
1297 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1298 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
d653c8cc MR |
1299 | WINDOW defaults to the selected window. Return POS. |
1300 | Optional third arg NOFORCE non-nil inhibits next redisplay from | |
1301 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1302 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1303 | { |
1304 | register struct window *w = decode_window (window); | |
1305 | ||
b7826503 | 1306 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1307 | set_marker_restricted (w->start, pos, w->buffer); |
1308 | /* this is not right, but much easier than doing what is right. */ | |
1309 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1310 | if (NILP (noforce)) |
7ab12479 JB |
1311 | w->force_start = Qt; |
1312 | w->update_mode_line = Qt; | |
d834a2e9 | 1313 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1314 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1315 | if (!EQ (window, selected_window)) |
1316 | windows_or_buffers_changed++; | |
ce7fae7d | 1317 | |
7ab12479 JB |
1318 | return pos; |
1319 | } | |
1320 | ||
d653c8cc | 1321 | |
7ab12479 | 1322 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1323 | 0, 1, 0, |
1324 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1325 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1326 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1327 | never called with WINDOW as its argument, or the value set by that | |
1328 | function was internally reset since its last call. WINDOW defaults to | |
1329 | the selected window. | |
1330 | ||
1331 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1332 | from displaying another buffer in it. `get-lru-window' and | |
1333 | `get-largest-window' treat dedicated windows specially. | |
1334 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1335 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1336 | ||
1337 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1338 | window, unless that window is "strongly" dedicated to its buffer, that | |
1339 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1340 | (Lisp_Object window) |
7ab12479 JB |
1341 | { |
1342 | return decode_window (window)->dedicated; | |
1343 | } | |
1344 | ||
d207b766 RS |
1345 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1346 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc MR |
1347 | doc: /* Mark WINDOW as dedicated according to FLAG. |
1348 | WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW | |
12bb3111 | 1349 | as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated. |
d653c8cc MR |
1350 | Return FLAG. |
1351 | ||
7bfac547 MR |
1352 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1353 | from displaying another buffer in it. `get-lru-window' and | |
1354 | `get-largest-window' treat dedicated windows specially. | |
1355 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1356 | `kill-buffer' can delete a dedicated window and the containing | |
1357 | frame. | |
1358 | ||
1359 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1360 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1361 | displayed by a window, unless that window is strongly dedicated to its | |
1362 | buffer. If and when `set-window-buffer' displays another buffer in a | |
1363 | window, it also makes sure that the window is not marked as dedicated. */) | |
5842a27b | 1364 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1365 | { |
1366 | register struct window *w = decode_window (window); | |
1367 | ||
d653c8cc | 1368 | w->dedicated = flag; |
7ab12479 JB |
1369 | return w->dedicated; |
1370 | } | |
1371 | ||
d653c8cc | 1372 | |
cfbb2395 JB |
1373 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1374 | 0, 1, 0, | |
d653c8cc MR |
1375 | doc: /* Return the parameters of WINDOW and their values. |
1376 | WINDOW defaults to the selected window. The return value is a list of | |
1377 | elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1378 | (Lisp_Object window) |
cfbb2395 | 1379 | { |
927abf37 | 1380 | return Fcopy_alist (decode_window (window)->window_parameters); |
cfbb2395 JB |
1381 | } |
1382 | ||
1383 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1384 | 2, 2, 0, | |
d653c8cc MR |
1385 | doc: /* Return WINDOW's value for PARAMETER. |
1386 | WINDOW defaults to the selected window. */) | |
5842a27b | 1387 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1388 | { |
927abf37 JB |
1389 | Lisp_Object result; |
1390 | ||
1391 | result = Fassq (parameter, decode_window (window)->window_parameters); | |
1392 | return CDR_SAFE (result); | |
cfbb2395 JB |
1393 | } |
1394 | ||
cfbb2395 JB |
1395 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1396 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1397 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1398 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1399 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 JB |
1400 | { |
1401 | register struct window *w = decode_window (window); | |
1402 | Lisp_Object old_alist_elt; | |
1403 | ||
1404 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1405 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1406 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1407 | else | |
1408 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1409 | return value; |
cfbb2395 JB |
1410 | } |
1411 | ||
1412 | ||
7ab12479 JB |
1413 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1414 | 0, 1, 0, | |
c85322d0 EZ |
1415 | doc: /* Return the display-table that WINDOW is using. |
1416 | WINDOW defaults to the selected window. */) | |
5842a27b | 1417 | (Lisp_Object window) |
7ab12479 JB |
1418 | { |
1419 | return decode_window (window)->display_table; | |
1420 | } | |
1421 | ||
5500c422 GM |
1422 | /* Get the display table for use on window W. This is either W's |
1423 | display table or W's buffer's display table. Ignore the specified | |
1424 | tables if they are not valid; if no valid table is specified, | |
1425 | return 0. */ | |
7ab12479 | 1426 | |
319315f1 | 1427 | struct Lisp_Char_Table * |
971de7fb | 1428 | window_display_table (struct window *w) |
7ab12479 | 1429 | { |
c756cdbe GM |
1430 | struct Lisp_Char_Table *dp = NULL; |
1431 | ||
1432 | if (DISP_TABLE_P (w->display_table)) | |
1433 | dp = XCHAR_TABLE (w->display_table); | |
1434 | else if (BUFFERP (w->buffer)) | |
1435 | { | |
1436 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1437 | |
c756cdbe GM |
1438 | if (DISP_TABLE_P (b->display_table)) |
1439 | dp = XCHAR_TABLE (b->display_table); | |
1440 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1441 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1442 | } | |
171d003c | 1443 | |
c756cdbe | 1444 | return dp; |
7ab12479 JB |
1445 | } |
1446 | ||
3a2712f9 | 1447 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1448 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1449 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1450 | { |
1451 | register struct window *w; | |
7ab12479 JB |
1452 | |
1453 | w = decode_window (window); | |
1454 | w->display_table = table; | |
1455 | return table; | |
1456 | } | |
1457 | \f | |
1458 | /* Record info on buffer window w is displaying | |
1459 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1460 | static void |
971de7fb | 1461 | unshow_buffer (register struct window *w) |
7ab12479 | 1462 | { |
12cae7c0 | 1463 | Lisp_Object buf; |
b73ea88e | 1464 | struct buffer *b; |
7ab12479 | 1465 | |
12cae7c0 | 1466 | buf = w->buffer; |
b73ea88e RS |
1467 | b = XBUFFER (buf); |
1468 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1469 | abort (); |
1470 | ||
573f41ab | 1471 | #if 0 |
7ab12479 JB |
1472 | if (w == XWINDOW (selected_window) |
1473 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1474 | /* Do this except when the selected window's buffer | |
1475 | is being removed from some other window. */ | |
573f41ab RS |
1476 | #endif |
1477 | /* last_window_start records the start position that this buffer | |
1478 | had in the last window to be disconnected from it. | |
1479 | Now that this statement is unconditional, | |
1480 | it is possible for the buffer to be displayed in the | |
1481 | selected window, while last_window_start reflects another | |
1482 | window which was recently showing the same buffer. | |
1483 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1484 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1485 | |
1486 | /* Point in the selected window's buffer | |
1487 | is actually stored in that buffer, and the window's pointm isn't used. | |
1488 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1489 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1490 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1491 | && !(WINDOWP (b->last_selected_window) |
1492 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1493 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1494 | temp_set_point_both (b, |
1495 | clip_to_bounds (BUF_BEGV (b), | |
1496 | XMARKER (w->pointm)->charpos, | |
1497 | BUF_ZV (b)), | |
1498 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1499 | marker_byte_position (w->pointm), | |
1500 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1501 | |
8801a864 KR |
1502 | if (WINDOWP (b->last_selected_window) |
1503 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1504 | b->last_selected_window = Qnil; |
7ab12479 JB |
1505 | } |
1506 | ||
1507 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1508 | static void |
971de7fb | 1509 | replace_window (Lisp_Object old, Lisp_Object replacement) |
7ab12479 JB |
1510 | { |
1511 | register Lisp_Object tem; | |
1512 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1513 | ||
44fa5b1e JB |
1514 | /* If OLD is its frame's root_window, then replacement is the new |
1515 | root_window for that frame. */ | |
7ab12479 | 1516 | |
7f4161e0 | 1517 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1518 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1519 | |
949cf20f KS |
1520 | p->left_col = o->left_col; |
1521 | p->top_line = o->top_line; | |
1522 | p->total_cols = o->total_cols; | |
1523 | p->total_lines = o->total_lines; | |
5500c422 GM |
1524 | p->desired_matrix = p->current_matrix = 0; |
1525 | p->vscroll = 0; | |
72af86bd AS |
1526 | memset (&p->cursor, 0, sizeof (p->cursor)); |
1527 | memset (&p->last_cursor, 0, sizeof (p->last_cursor)); | |
1528 | memset (&p->phys_cursor, 0, sizeof (p->phys_cursor)); | |
5500c422 | 1529 | p->phys_cursor_type = -1; |
4b26579e | 1530 | p->phys_cursor_width = -1; |
5500c422 GM |
1531 | p->must_be_updated_p = 0; |
1532 | p->pseudo_window_p = 0; | |
1533 | XSETFASTINT (p->window_end_vpos, 0); | |
1534 | XSETFASTINT (p->window_end_pos, 0); | |
1535 | p->window_end_valid = Qnil; | |
7bbb5782 | 1536 | p->frozen_window_start_p = 0; |
949cf20f | 1537 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1538 | |
1539 | p->next = tem = o->next; | |
265a9e55 | 1540 | if (!NILP (tem)) |
7ab12479 JB |
1541 | XWINDOW (tem)->prev = replacement; |
1542 | ||
1543 | p->prev = tem = o->prev; | |
265a9e55 | 1544 | if (!NILP (tem)) |
7ab12479 JB |
1545 | XWINDOW (tem)->next = replacement; |
1546 | ||
1547 | p->parent = tem = o->parent; | |
265a9e55 | 1548 | if (!NILP (tem)) |
7ab12479 JB |
1549 | { |
1550 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1551 | XWINDOW (tem)->vchild = replacement; | |
1552 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1553 | XWINDOW (tem)->hchild = replacement; | |
1554 | } | |
1555 | ||
1556 | /*** Here, if replacement is a vertical combination | |
1557 | and so is its new parent, we should make replacement's | |
1558 | children be children of that parent instead. ***/ | |
1559 | } | |
1560 | ||
1561 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
8fef9de1 MR |
1562 | doc: /* Remove WINDOW from its frame. |
1563 | WINDOW defaults to the selected window. Return nil. | |
1564 | Signal an error when WINDOW is the only window on its frame. */) | |
5842a27b | 1565 | (register Lisp_Object window) |
543f5fb1 | 1566 | { |
eeca6f6f SM |
1567 | struct frame *f; |
1568 | if (NILP (window)) | |
1569 | window = selected_window; | |
dbf64827 JB |
1570 | else |
1571 | CHECK_LIVE_WINDOW (window); | |
1572 | ||
eeca6f6f | 1573 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
543f5fb1 RS |
1574 | delete_window (window); |
1575 | ||
eeca6f6f | 1576 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1577 | |
1578 | return Qnil; | |
1579 | } | |
1580 | ||
5e14b1fc | 1581 | void |
971de7fb | 1582 | delete_window (register Lisp_Object window) |
7ab12479 JB |
1583 | { |
1584 | register Lisp_Object tem, parent, sib; | |
1585 | register struct window *p; | |
1586 | register struct window *par; | |
951f9df5 | 1587 | struct frame *f; |
7ab12479 | 1588 | |
605be8af JB |
1589 | /* Because this function is called by other C code on non-leaf |
1590 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1591 | so we can't decode_window here. */ | |
eeca6f6f | 1592 | CHECK_WINDOW (window); |
7ab12479 | 1593 | p = XWINDOW (window); |
605be8af | 1594 | |
0d384044 | 1595 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1596 | if (NILP (p->buffer) |
1597 | && NILP (p->hchild) | |
1598 | && NILP (p->vchild)) | |
296b535c | 1599 | return; |
605be8af | 1600 | |
7ab12479 | 1601 | parent = p->parent; |
265a9e55 | 1602 | if (NILP (parent)) |
7ab12479 JB |
1603 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1604 | par = XWINDOW (parent); | |
1605 | ||
1606 | windows_or_buffers_changed++; | |
67492200 | 1607 | Vwindow_list = Qnil; |
951f9df5 GM |
1608 | f = XFRAME (WINDOW_FRAME (p)); |
1609 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1610 | |
605be8af JB |
1611 | /* Are we trying to delete any frame's selected window? */ |
1612 | { | |
192c3131 | 1613 | Lisp_Object swindow, pwindow; |
605be8af | 1614 | |
0def0403 RS |
1615 | /* See if the frame's selected window is either WINDOW |
1616 | or any subwindow of it, by finding all that window's parents | |
1617 | and comparing each one with WINDOW. */ | |
192c3131 | 1618 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1619 | |
192c3131 | 1620 | while (1) |
0def0403 | 1621 | { |
192c3131 RS |
1622 | pwindow = swindow; |
1623 | while (!NILP (pwindow)) | |
1624 | { | |
1625 | if (EQ (window, pwindow)) | |
1626 | break; | |
1627 | pwindow = XWINDOW (pwindow)->parent; | |
1628 | } | |
1629 | ||
1630 | /* If the window being deleted is not a parent of SWINDOW, | |
1631 | then SWINDOW is ok as the new selected window. */ | |
1632 | if (!EQ (window, pwindow)) | |
0def0403 | 1633 | break; |
192c3131 | 1634 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1635 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1636 | |
1637 | /* If we get back to the frame's selected window, | |
1638 | it means there was no acceptable alternative, | |
1639 | so we cannot delete. */ | |
1640 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1641 | error ("Cannot delete window"); | |
0def0403 RS |
1642 | } |
1643 | ||
192c3131 RS |
1644 | /* If we need to change SWINDOW, do it. */ |
1645 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1646 | { |
605be8af JB |
1647 | /* If we're about to delete the selected window on the |
1648 | selected frame, then we should use Fselect_window to select | |
1649 | the new window. On the other hand, if we're about to | |
1650 | delete the selected window on any other frame, we shouldn't do | |
1651 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1652 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1653 | Fselect_window (swindow, Qnil); |
605be8af | 1654 | else |
192c3131 | 1655 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1656 | } |
1657 | } | |
7ab12479 | 1658 | |
0d384044 RS |
1659 | /* Now we know we can delete this one. */ |
1660 | window_deletion_count++; | |
1661 | ||
7ab12479 JB |
1662 | tem = p->buffer; |
1663 | /* tem is null for dummy parent windows | |
1664 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1665 | if (!NILP (tem)) |
7ab12479 JB |
1666 | { |
1667 | unshow_buffer (p); | |
2d0834cc SM |
1668 | unchain_marker (XMARKER (p->pointm)); |
1669 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1670 | } |
1671 | ||
05e71564 GM |
1672 | /* Free window glyph matrices. It is sure that they are allocated |
1673 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1674 | events and other events that access glyph matrices are not | |
1675 | processed while we are changing them. */ | |
1676 | BLOCK_INPUT; | |
951f9df5 | 1677 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1678 | |
7ab12479 | 1679 | tem = p->next; |
265a9e55 | 1680 | if (!NILP (tem)) |
7ab12479 JB |
1681 | XWINDOW (tem)->prev = p->prev; |
1682 | ||
1683 | tem = p->prev; | |
265a9e55 | 1684 | if (!NILP (tem)) |
7ab12479 JB |
1685 | XWINDOW (tem)->next = p->next; |
1686 | ||
1687 | if (EQ (window, par->hchild)) | |
1688 | par->hchild = p->next; | |
1689 | if (EQ (window, par->vchild)) | |
1690 | par->vchild = p->next; | |
1691 | ||
1692 | /* Find one of our siblings to give our space to. */ | |
1693 | sib = p->prev; | |
265a9e55 | 1694 | if (NILP (sib)) |
7ab12479 JB |
1695 | { |
1696 | /* If p gives its space to its next sibling, that sibling needs | |
1697 | to have its top/left side pulled back to where p's is. | |
1698 | set_window_{height,width} will re-position the sibling's | |
1699 | children. */ | |
1700 | sib = p->next; | |
949cf20f KS |
1701 | XWINDOW (sib)->top_line = p->top_line; |
1702 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1703 | } |
1704 | ||
1705 | /* Stretch that sibling. */ | |
265a9e55 | 1706 | if (!NILP (par->vchild)) |
7ab12479 | 1707 | set_window_height (sib, |
949cf20f | 1708 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1709 | 1); |
265a9e55 | 1710 | if (!NILP (par->hchild)) |
7ab12479 | 1711 | set_window_width (sib, |
949cf20f | 1712 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1713 | 1); |
1714 | ||
1715 | /* If parent now has only one child, | |
1716 | put the child into the parent's place. */ | |
7ab12479 | 1717 | tem = par->hchild; |
265a9e55 | 1718 | if (NILP (tem)) |
7ab12479 | 1719 | tem = par->vchild; |
5494d7bc | 1720 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1721 | replace_window (parent, tem); |
5494d7bc JD |
1722 | par = XWINDOW (tem); |
1723 | } | |
605be8af JB |
1724 | |
1725 | /* Since we may be deleting combination windows, we must make sure that | |
1726 | not only p but all its children have been marked as deleted. */ | |
1727 | if (! NILP (p->hchild)) | |
1728 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1729 | else if (! NILP (p->vchild)) | |
1730 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1731 | ||
1732 | /* Mark this window as deleted. */ | |
1733 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1734 | |
5494d7bc JD |
1735 | if (! NILP (par->parent)) |
1736 | par = XWINDOW (par->parent); | |
1737 | ||
1738 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1739 | one of them. */ | |
ae12ecd7 | 1740 | |
5494d7bc JD |
1741 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1742 | { | |
1743 | p = XWINDOW (par->vchild); | |
1744 | par->vchild = p->vchild; | |
1745 | tem = p->vchild; | |
1746 | } | |
1747 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1748 | { | |
1749 | p = XWINDOW (par->hchild); | |
1750 | par->hchild = p->hchild; | |
1751 | tem = p->hchild; | |
1752 | } | |
1753 | else | |
1754 | p = 0; | |
1755 | ||
1756 | if (p) | |
1757 | { | |
1758 | while (! NILP (tem)) { | |
1759 | XWINDOW (tem)->parent = p->parent; | |
1760 | if (NILP (XWINDOW (tem)->next)) | |
1761 | break; | |
1762 | tem = XWINDOW (tem)->next; | |
1763 | } | |
1764 | if (! NILP (tem)) { | |
1765 | /* The next of the v/hchild we are removing is now the next of the | |
1766 | last child for the v/hchild: | |
1767 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1768 | | | |
1769 | -> next3 | |
1770 | After: v/hchild -> next1 -> next2 -> next3 | |
1771 | */ | |
1772 | XWINDOW (tem)->next = p->next; | |
1773 | if (! NILP (p->next)) | |
1774 | XWINDOW (p->next)->prev = tem; | |
1775 | } | |
1776 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1777 | } | |
1778 | ||
1779 | ||
5500c422 | 1780 | /* Adjust glyph matrices. */ |
951f9df5 | 1781 | adjust_glyphs (f); |
05e71564 | 1782 | UNBLOCK_INPUT; |
7ab12479 | 1783 | } |
67492200 GM |
1784 | |
1785 | ||
7ab12479 | 1786 | \f |
67492200 GM |
1787 | /*********************************************************************** |
1788 | Window List | |
1789 | ***********************************************************************/ | |
1790 | ||
f95464e4 GM |
1791 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1792 | pointer. This is a callback function for foreach_window, used in | |
1793 | function window_list. */ | |
67492200 GM |
1794 | |
1795 | static int | |
971de7fb | 1796 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 1797 | { |
f95464e4 | 1798 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1799 | Lisp_Object window; |
1800 | XSETWINDOW (window, w); | |
212116d6 | 1801 | *list = Fcons (window, *list); |
67492200 GM |
1802 | return 1; |
1803 | } | |
1804 | ||
1805 | ||
1806 | /* Return a list of all windows, for use by next_window. If | |
1807 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1808 | list, cache it in Vwindow_list, and return that. */ | |
1809 | ||
1810 | static Lisp_Object | |
971de7fb | 1811 | window_list (void) |
67492200 GM |
1812 | { |
1813 | if (!CONSP (Vwindow_list)) | |
1814 | { | |
1815 | Lisp_Object tail; | |
212116d6 | 1816 | |
67492200 GM |
1817 | Vwindow_list = Qnil; |
1818 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1819 | { |
1820 | Lisp_Object args[2]; | |
1821 | ||
1822 | /* We are visiting windows in canonical order, and add | |
1823 | new windows at the front of args[1], which means we | |
1824 | have to reverse this list at the end. */ | |
1825 | args[1] = Qnil; | |
1826 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1827 | args[0] = Vwindow_list; | |
1828 | args[1] = Fnreverse (args[1]); | |
1829 | Vwindow_list = Fnconc (2, args); | |
1830 | } | |
67492200 | 1831 | } |
177c0ea7 | 1832 | |
67492200 GM |
1833 | return Vwindow_list; |
1834 | } | |
1835 | ||
1836 | ||
118ea242 GM |
1837 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1838 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1839 | |
118ea242 GM |
1840 | MINIBUF t means WINDOW may be minibuffer windows. |
1841 | `lambda' means WINDOW may not be a minibuffer window. | |
1842 | a window means a specific minibuffer window | |
67492200 | 1843 | |
118ea242 GM |
1844 | ALL_FRAMES t means search all frames, |
1845 | nil means search just current frame, | |
1846 | `visible' means search just visible frames, | |
1847 | 0 means search visible and iconified frames, | |
1848 | a window means search the frame that window belongs to, | |
1849 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1850 | |
1851 | static int | |
971de7fb | 1852 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
1853 | { |
1854 | struct window *w = XWINDOW (window); | |
1855 | struct frame *f = XFRAME (w->frame); | |
1856 | int candidate_p = 1; | |
1857 | ||
1858 | if (!BUFFERP (w->buffer)) | |
1859 | candidate_p = 0; | |
1860 | else if (MINI_WINDOW_P (w) | |
1861 | && (EQ (minibuf, Qlambda) | |
1862 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1863 | { | |
1864 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1865 | If it is a window, consider only that one. */ | |
1866 | candidate_p = 0; | |
1867 | } | |
118ea242 GM |
1868 | else if (EQ (all_frames, Qt)) |
1869 | candidate_p = 1; | |
67492200 | 1870 | else if (NILP (all_frames)) |
118ea242 GM |
1871 | { |
1872 | xassert (WINDOWP (owindow)); | |
1873 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1874 | } | |
67492200 GM |
1875 | else if (EQ (all_frames, Qvisible)) |
1876 | { | |
1877 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1878 | candidate_p = FRAME_VISIBLE_P (f) |
1879 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1880 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1881 | ||
67492200 GM |
1882 | } |
1883 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1884 | { | |
1885 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1886 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1887 | #ifdef HAVE_X_WINDOWS | |
1888 | /* Yuck!! If we've just created the frame and the | |
1889 | window-manager requested the user to place it | |
1890 | manually, the window may still not be considered | |
1891 | `visible'. I'd argue it should be at least | |
1892 | something like `iconified', but don't know how to do | |
1893 | that yet. --Stef */ | |
1894 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1895 | && !f->output_data.x->has_been_visible) | |
1896 | #endif | |
de509a60 SM |
1897 | ) |
1898 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1899 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1900 | } |
67492200 GM |
1901 | else if (WINDOWP (all_frames)) |
1902 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1903 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1904 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1905 | else if (FRAMEP (all_frames)) |
1906 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1907 | |
1908 | return candidate_p; | |
1909 | } | |
1910 | ||
1911 | ||
1912 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1913 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1914 | ALL_FRAMES. */ | |
1915 | ||
1916 | static void | |
971de7fb | 1917 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
1918 | { |
1919 | if (NILP (*window)) | |
1920 | *window = selected_window; | |
1921 | else | |
b7826503 | 1922 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1923 | |
67492200 GM |
1924 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1925 | does. */ | |
1926 | if (NILP (*minibuf)) | |
1927 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1928 | else if (!EQ (*minibuf, Qt)) | |
1929 | *minibuf = Qlambda; | |
177c0ea7 | 1930 | |
67492200 GM |
1931 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1932 | => count none of them, or a specific minibuffer window (the | |
1933 | active one) to count. */ | |
1934 | ||
1935 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1936 | if (NILP (*all_frames)) | |
1937 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1938 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1939 | : Qnil); | |
1940 | else if (EQ (*all_frames, Qvisible)) | |
1941 | ; | |
0f8fe9a2 | 1942 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1943 | ; |
1944 | else if (FRAMEP (*all_frames)) | |
1945 | ; | |
1946 | else if (!EQ (*all_frames, Qt)) | |
1947 | *all_frames = Qnil; | |
177c0ea7 | 1948 | |
67492200 GM |
1949 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1950 | search just current frame, `visible' meaning search just visible | |
1951 | frames, 0 meaning search visible and iconified frames, or a | |
1952 | window, meaning search the frame that window belongs to, or a | |
1953 | frame, meaning consider windows on that frame, only. */ | |
1954 | } | |
1955 | ||
1956 | ||
ab6d1131 | 1957 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
1958 | of windows. NEXT_P non-zero means return the next window. See the |
1959 | documentation string of next-window for the meaning of MINIBUF and | |
1960 | ALL_FRAMES. */ | |
1961 | ||
1962 | static Lisp_Object | |
971de7fb | 1963 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
1964 | { |
1965 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1966 | |
67492200 GM |
1967 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1968 | return the first window on the frame. */ | |
1969 | if (FRAMEP (all_frames) | |
1970 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1971 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1972 | |
212116d6 | 1973 | if (next_p) |
67492200 GM |
1974 | { |
1975 | Lisp_Object list; | |
177c0ea7 | 1976 | |
67492200 GM |
1977 | /* Find WINDOW in the list of all windows. */ |
1978 | list = Fmemq (window, window_list ()); | |
1979 | ||
1980 | /* Scan forward from WINDOW to the end of the window list. */ | |
1981 | if (CONSP (list)) | |
1982 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1983 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1984 | break; |
1985 | ||
1986 | /* Scan from the start of the window list up to WINDOW. */ | |
1987 | if (!CONSP (list)) | |
1988 | for (list = Vwindow_list; | |
1989 | CONSP (list) && !EQ (XCAR (list), window); | |
1990 | list = XCDR (list)) | |
118ea242 | 1991 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1992 | break; |
1993 | ||
1994 | if (CONSP (list)) | |
1995 | window = XCAR (list); | |
1996 | } | |
1997 | else | |
1998 | { | |
1999 | Lisp_Object candidate, list; | |
177c0ea7 | 2000 | |
67492200 GM |
2001 | /* Scan through the list of windows for candidates. If there are |
2002 | candidate windows in front of WINDOW, the last one of these | |
2003 | is the one we want. If there are candidates following WINDOW | |
2004 | in the list, again the last one of these is the one we want. */ | |
2005 | candidate = Qnil; | |
2006 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2007 | { | |
2008 | if (EQ (XCAR (list), window)) | |
2009 | { | |
2010 | if (WINDOWP (candidate)) | |
2011 | break; | |
2012 | } | |
118ea242 GM |
2013 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2014 | all_frames)) | |
67492200 GM |
2015 | candidate = XCAR (list); |
2016 | } | |
2017 | ||
2018 | if (WINDOWP (candidate)) | |
2019 | window = candidate; | |
2020 | } | |
2021 | ||
2022 | return window; | |
2023 | } | |
7ab12479 | 2024 | |
7ab12479 | 2025 | |
26f6279d | 2026 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 MR |
2027 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
2028 | WINDOW defaults to the selected window. The optional arguments | |
2029 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
fdb82f93 | 2030 | |
ab6d1131 MR |
2031 | MINIBUF t means consider the minibuffer window even if the |
2032 | minibuffer is not active. MINIBUF nil or omitted means consider | |
2033 | the minibuffer window only if the minibuffer is active. Any | |
2034 | other value means do not consider the minibuffer window even if | |
2035 | the minibuffer is active. | |
fdb82f93 PJ |
2036 | |
2037 | Several frames may share a single minibuffer; if the minibuffer | |
ab6d1131 MR |
2038 | is active, all windows on all frames that share that minibuffer |
2039 | are considered too. Therefore, if you are using a separate | |
2040 | minibuffer frame and the minibuffer is active and MINIBUF says it | |
2041 | counts, `next-window' considers the windows in the frame from | |
2042 | which you entered the minibuffer, as well as the minibuffer | |
2043 | window. | |
2044 | ||
2045 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's | |
2046 | frame, plus the minibuffer window if specified by the MINIBUF | |
2047 | argument, see above. If the minibuffer counts, consider all | |
2048 | windows on all frames that share that minibuffer too. | |
2049 | ALL-FRAMES t means consider all windows on all existing frames. | |
2050 | ALL-FRAMES `visible' means consider all windows on all visible | |
2051 | frames. | |
2052 | ALL-FRAMES 0 means consider all windows on all visible and | |
2053 | iconified frames. | |
2054 | ALL-FRAMES a frame means consider all windows on that frame only. | |
2055 | Anything else means consider all windows on WINDOW's frame and no | |
2056 | others. | |
fdb82f93 PJ |
2057 | |
2058 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2059 | `next-window' to iterate through the entire cycle of acceptable | |
2060 | windows, eventually ending up back at the window you started with. | |
2061 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2062 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2063 | { |
67492200 | 2064 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2065 | } |
2066 | ||
67492200 | 2067 | |
26f6279d | 2068 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 MR |
2069 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
2070 | WINDOW defaults to the selected window. The optional arguments | |
2071 | MINIBUF and ALL-FRAMES specify the set of windows to consider. | |
2072 | For the precise meaning of these arguments see `next-window'. | |
2073 | ||
2074 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2075 | use `previous-window' to iterate through the entire cycle of | |
2076 | acceptable windows, eventually ending up back at the window you | |
2077 | started with. `next-window' traverses the same cycle, in the | |
2078 | reverse order. */) | |
5842a27b | 2079 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2080 | { |
67492200 | 2081 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2082 | } |
2083 | ||
67492200 | 2084 | |
62c07cc7 | 2085 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
ab6d1131 MR |
2086 | doc: /* Select another window in cyclic ordering of windows. |
2087 | COUNT specifies the number of windows to skip, starting with the | |
2088 | selected window, before making the selection. If COUNT is | |
2089 | positive, skip COUNT windows forwards. If COUNT is negative, | |
2090 | skip -COUNT windows backwards. COUNT zero means do not skip any | |
2091 | window, so select the selected window. In an interactive call, | |
2092 | COUNT is the numeric prefix argument. Return nil. | |
2093 | ||
2094 | This function uses `next-window' for finding the window to select. | |
2095 | The argument ALL-FRAMES has the same meaning as in `next-window', | |
2096 | but the MINIBUF argument of `next-window' is always effectively | |
2097 | nil. */) | |
5842a27b | 2098 | (Lisp_Object count, Lisp_Object all_frames) |
7ab12479 | 2099 | { |
67492200 GM |
2100 | Lisp_Object window; |
2101 | int i; | |
7ab12479 | 2102 | |
ab6d1131 | 2103 | CHECK_NUMBER (count); |
67492200 | 2104 | window = selected_window; |
177c0ea7 | 2105 | |
ab6d1131 | 2106 | for (i = XINT (count); i > 0; --i) |
67492200 GM |
2107 | window = Fnext_window (window, Qnil, all_frames); |
2108 | for (; i < 0; ++i) | |
2109 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2110 | |
14d87dc9 | 2111 | Fselect_window (window, Qnil); |
7ab12479 JB |
2112 | return Qnil; |
2113 | } | |
67492200 GM |
2114 | |
2115 | ||
2116 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2117 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2118 | FRAME nil or omitted means use the selected frame. | |
2119 | WINDOW nil or omitted means use the selected window. | |
2120 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2121 | MINIBUF nil or omitted means include the minibuffer window only | |
2122 | if it's active. | |
2123 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
5842a27b | 2124 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) |
cd2904bd | 2125 | { |
cd2904bd | 2126 | if (NILP (window)) |
acc6289a SM |
2127 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2128 | CHECK_WINDOW (window); | |
cd2904bd GM |
2129 | if (NILP (frame)) |
2130 | frame = selected_frame; | |
2131 | ||
2132 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2133 | error ("Window is on a different frame"); | |
2134 | ||
2135 | return window_list_1 (window, minibuf, frame); | |
2136 | } | |
2137 | ||
2138 | ||
ab6d1131 | 2139 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2140 | for `next-window'. */ |
2141 | ||
2142 | static Lisp_Object | |
971de7fb | 2143 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2144 | { |
403de3b4 | 2145 | Lisp_Object tail, list, rest; |
67492200 GM |
2146 | |
2147 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2148 | list = Qnil; | |
177c0ea7 | 2149 | |
67492200 | 2150 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2151 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2152 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2153 | |
403de3b4 RS |
2154 | /* Rotate the list to start with WINDOW. */ |
2155 | list = Fnreverse (list); | |
2156 | rest = Fmemq (window, list); | |
2157 | if (!NILP (rest) && !EQ (rest, list)) | |
2158 | { | |
1725a7c9 | 2159 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2160 | ; |
2161 | XSETCDR (tail, Qnil); | |
2162 | list = nconc2 (rest, list); | |
2163 | } | |
2164 | return list; | |
67492200 GM |
2165 | } |
2166 | ||
2167 | ||
7ab12479 JB |
2168 | \f |
2169 | /* Look at all windows, performing an operation specified by TYPE | |
2170 | with argument OBJ. | |
75d8f668 | 2171 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2172 | Qnil, look at just the selected frame; |
89bca612 | 2173 | Qvisible, look at visible frames; |
75d8f668 | 2174 | a frame, just look at windows on that frame. |
85fe3b5e | 2175 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2176 | |
2177 | enum window_loop | |
2178 | { | |
2179 | WINDOW_LOOP_UNUSED, | |
2180 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2181 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2182 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2183 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2184 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2185 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2186 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2187 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2188 | }; |
2189 | ||
2190 | static Lisp_Object | |
971de7fb | 2191 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2192 | { |
118ea242 GM |
2193 | Lisp_Object window, windows, best_window, frame_arg; |
2194 | struct frame *f; | |
ffdc852d | 2195 | struct gcpro gcpro1; |
177c0ea7 | 2196 | |
44fa5b1e JB |
2197 | /* If we're only looping through windows on a particular frame, |
2198 | frame points to that frame. If we're looping through windows | |
2199 | on all frames, frame is 0. */ | |
2200 | if (FRAMEP (frames)) | |
118ea242 | 2201 | f = XFRAME (frames); |
44fa5b1e | 2202 | else if (NILP (frames)) |
118ea242 | 2203 | f = SELECTED_FRAME (); |
7ab12479 | 2204 | else |
118ea242 | 2205 | f = NULL; |
177c0ea7 | 2206 | |
118ea242 | 2207 | if (f) |
89bca612 | 2208 | frame_arg = Qlambda; |
0f8fe9a2 | 2209 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2210 | frame_arg = frames; |
89bca612 RS |
2211 | else if (EQ (frames, Qvisible)) |
2212 | frame_arg = frames; | |
118ea242 GM |
2213 | else |
2214 | frame_arg = Qt; | |
7ab12479 | 2215 | |
89bca612 RS |
2216 | /* frame_arg is Qlambda to stick to one frame, |
2217 | Qvisible to consider all visible frames, | |
2218 | or Qt otherwise. */ | |
2219 | ||
7ab12479 | 2220 | /* Pick a window to start with. */ |
017b2bad | 2221 | if (WINDOWP (obj)) |
118ea242 GM |
2222 | window = obj; |
2223 | else if (f) | |
2224 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2225 | else |
118ea242 | 2226 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2227 | |
cd2904bd | 2228 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2229 | GCPRO1 (windows); |
7ab12479 | 2230 | best_window = Qnil; |
118ea242 | 2231 | |
e67a1dea | 2232 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2233 | { |
118ea242 | 2234 | struct window *w; |
177c0ea7 | 2235 | |
118ea242 GM |
2236 | window = XCAR (windows); |
2237 | w = XWINDOW (window); | |
177c0ea7 | 2238 | |
118ea242 GM |
2239 | /* Note that we do not pay attention here to whether the frame |
2240 | is visible, since Fwindow_list skips non-visible frames if | |
2241 | that is desired, under the control of frame_arg. */ | |
2242 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2243 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2244 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2245 | || (mini && minibuf_level > 0)) |
2246 | switch (type) | |
2247 | { | |
2248 | case GET_BUFFER_WINDOW: | |
118ea242 | 2249 | if (EQ (w->buffer, obj) |
5c204627 RS |
2250 | /* Don't find any minibuffer window |
2251 | except the one that is currently in use. */ | |
118ea242 GM |
2252 | && (MINI_WINDOW_P (w) |
2253 | ? EQ (window, minibuf_window) | |
2254 | : 1)) | |
2255 | { | |
5ddc1b75 GM |
2256 | if (NILP (best_window)) |
2257 | best_window = window; | |
2258 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2259 | /* Prefer to return selected-window. */ |
2260 | RETURN_UNGCPRO (window); | |
2261 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2262 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2263 | best_window = window; |
118ea242 | 2264 | } |
7ab12479 JB |
2265 | break; |
2266 | ||
2267 | case GET_LRU_WINDOW: | |
20b69789 SM |
2268 | /* `obj' is an integer encoding a bitvector. |
2269 | `obj & 1' means consider only full-width windows. | |
2270 | `obj & 2' means consider also dedicated windows. */ | |
2271 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2272 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2273 | /* Minibuffer windows are always ignored. */ |
2274 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2275 | break; |
265a9e55 | 2276 | if (NILP (best_window) |
7ab12479 | 2277 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2278 | > XFASTINT (w->use_time))) |
2279 | best_window = window; | |
7ab12479 JB |
2280 | break; |
2281 | ||
2282 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2283 | if (!EQ (window, obj)) |
2284 | Fdelete_window (window); | |
7ab12479 JB |
2285 | break; |
2286 | ||
2287 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2288 | if (EQ (w->buffer, obj)) |
7ab12479 | 2289 | { |
118ea242 | 2290 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2291 | |
2292 | /* If this window is dedicated, and in a frame of its own, | |
2293 | kill the frame. */ | |
118ea242 GM |
2294 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2295 | && !NILP (w->dedicated) | |
3548e138 | 2296 | && other_visible_frames (f)) |
7ab12479 | 2297 | { |
3548e138 RS |
2298 | /* Skip the other windows on this frame. |
2299 | There might be one, the minibuffer! */ | |
118ea242 GM |
2300 | while (CONSP (XCDR (windows)) |
2301 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2302 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2303 | windows = XCDR (windows); | |
177c0ea7 | 2304 | |
3548e138 | 2305 | /* Now we can safely delete the frame. */ |
56f2de10 | 2306 | delete_frame (w->frame, Qnil); |
118ea242 GM |
2307 | } |
2308 | else if (NILP (w->parent)) | |
2309 | { | |
2310 | /* If we're deleting the buffer displayed in the | |
2311 | only window on the frame, find a new buffer to | |
2312 | display there. */ | |
2313 | Lisp_Object buffer; | |
2314 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
1c33c906 MR |
2315 | /* Reset dedicated state of window. */ |
2316 | w->dedicated = Qnil; | |
949cf20f | 2317 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2318 | if (EQ (window, selected_window)) |
2319 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2320 | } |
2321 | else | |
118ea242 | 2322 | Fdelete_window (window); |
7ab12479 JB |
2323 | } |
2324 | break; | |
2325 | ||
2326 | case GET_LARGEST_WINDOW: | |
20b69789 | 2327 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2328 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2329 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2330 | break; |
177c0ea7 | 2331 | |
c930dfab | 2332 | if (NILP (best_window)) |
118ea242 | 2333 | best_window = window; |
c930dfab GM |
2334 | else |
2335 | { | |
2336 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2337 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2338 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2339 | best_window = window; |
2340 | } | |
7ab12479 JB |
2341 | } |
2342 | break; | |
2343 | ||
2344 | case UNSHOW_BUFFER: | |
118ea242 | 2345 | if (EQ (w->buffer, obj)) |
7ab12479 | 2346 | { |
118ea242 GM |
2347 | Lisp_Object buffer; |
2348 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2349 | |
7ab12479 | 2350 | /* Find another buffer to show in this window. */ |
118ea242 | 2351 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2352 | |
38ab08d1 RS |
2353 | /* If this window is dedicated, and in a frame of its own, |
2354 | kill the frame. */ | |
118ea242 GM |
2355 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2356 | && !NILP (w->dedicated) | |
38ab08d1 | 2357 | && other_visible_frames (f)) |
45945a7b RS |
2358 | { |
2359 | /* Skip the other windows on this frame. | |
2360 | There might be one, the minibuffer! */ | |
118ea242 GM |
2361 | while (CONSP (XCDR (windows)) |
2362 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2363 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2364 | windows = XCDR (windows); | |
177c0ea7 | 2365 | |
45945a7b | 2366 | /* Now we can safely delete the frame. */ |
56f2de10 | 2367 | delete_frame (w->frame, Qnil); |
45945a7b | 2368 | } |
a5731348 SM |
2369 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2370 | { | |
2371 | Lisp_Object window; | |
2372 | XSETWINDOW (window, w); | |
2373 | /* If this window is dedicated and not the only window | |
2374 | in its frame, then kill it. */ | |
2375 | Fdelete_window (window); | |
2376 | } | |
38ab08d1 | 2377 | else |
38ab08d1 RS |
2378 | { |
2379 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2380 | w->dedicated = Qnil; |
949cf20f | 2381 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2382 | if (EQ (window, selected_window)) |
2383 | Fset_buffer (w->buffer); | |
38ab08d1 | 2384 | } |
7ab12479 JB |
2385 | } |
2386 | break; | |
3f8ab7bd | 2387 | |
6b61353c KH |
2388 | case REDISPLAY_BUFFER_WINDOWS: |
2389 | if (EQ (w->buffer, obj)) | |
2390 | { | |
2391 | mark_window_display_accurate (window, 0); | |
2392 | w->update_mode_line = Qt; | |
2393 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2394 | ++update_mode_lines; | |
2395 | best_window = window; | |
2396 | } | |
2397 | break; | |
2398 | ||
3f8ab7bd RS |
2399 | /* Check for a window that has a killed buffer. */ |
2400 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2401 | if (! NILP (w->buffer) |
2402 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2403 | abort (); |
118ea242 | 2404 | break; |
6bbd7a29 GM |
2405 | |
2406 | case WINDOW_LOOP_UNUSED: | |
2407 | break; | |
7ab12479 | 2408 | } |
7ab12479 | 2409 | } |
7ab12479 | 2410 | |
118ea242 | 2411 | UNGCPRO; |
7ab12479 | 2412 | return best_window; |
37962e60 | 2413 | } |
605be8af | 2414 | |
3f8ab7bd RS |
2415 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2416 | ||
233a4a2c | 2417 | void |
971de7fb | 2418 | check_all_windows (void) |
3f8ab7bd RS |
2419 | { |
2420 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2421 | } | |
2422 | ||
3cbb13c8 | 2423 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2424 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2425 | \(LRU means Least Recently Used.) |
2426 | ||
6b61353c | 2427 | Return a full-width window if possible. |
c2755926 | 2428 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2429 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2430 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2431 | If optional argument FRAME is `visible', search all visible frames. |
2432 | If FRAME is 0, search all visible and iconified frames. | |
2433 | If FRAME is t, search all frames. | |
2434 | If FRAME is nil, search only the selected frame. | |
2435 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2436 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 JB |
2437 | { |
2438 | register Lisp_Object w; | |
2439 | /* First try for a window that is full-width */ | |
20b69789 SM |
2440 | w = window_loop (GET_LRU_WINDOW, |
2441 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2442 | 0, frame); | |
265a9e55 | 2443 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2444 | return w; |
2445 | /* If none of them, try the rest */ | |
20b69789 SM |
2446 | return window_loop (GET_LRU_WINDOW, |
2447 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2448 | 0, frame); | |
7ab12479 JB |
2449 | } |
2450 | ||
3cbb13c8 | 2451 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2452 | doc: /* Return the largest window in area. |
c2755926 | 2453 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2454 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2455 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2456 | If optional argument FRAME is `visible', search all visible frames. |
2457 | If FRAME is 0, search all visible and iconified frames. | |
2458 | If FRAME is t, search all frames. | |
2459 | If FRAME is nil, search only the selected frame. | |
2460 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2461 | (Lisp_Object frame, Lisp_Object dedicated) |
7ab12479 | 2462 | { |
20b69789 | 2463 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2464 | frame); |
7ab12479 JB |
2465 | } |
2466 | ||
fec89261 MR |
2467 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
2468 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. | |
2469 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the | |
2470 | current buffer. | |
fdb82f93 PJ |
2471 | If optional argument FRAME is `visible', search all visible frames. |
2472 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2473 | If FRAME is t, search all frames. | |
2474 | If FRAME is nil, search only the selected frame. | |
2475 | If FRAME is a frame, search only that frame. */) | |
5842a27b | 2476 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2477 | { |
fec89261 MR |
2478 | Lisp_Object buffer; |
2479 | ||
2480 | if (NILP (buffer_or_name)) | |
2481 | buffer = Fcurrent_buffer (); | |
2482 | else | |
2483 | buffer = Fget_buffer (buffer_or_name); | |
2484 | ||
017b2bad | 2485 | if (BUFFERP (buffer)) |
44fa5b1e | 2486 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2487 | else |
2488 | return Qnil; | |
2489 | } | |
2490 | ||
2491 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2492 | 0, 1, "", |
2493 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2494 | Only the frame WINDOW is on is affected. | |
fec89261 MR |
2495 | This function tries to reduce display jumps by keeping the text |
2496 | previously visible in WINDOW in the same place on the frame. Doing this | |
2497 | depends on the value of (window-start WINDOW), so if calling this | |
2498 | function in a program gives strange scrolling, make sure the | |
2499 | window-start value is reasonable when this function is called. */) | |
5842a27b | 2500 | (Lisp_Object window) |
7ab12479 JB |
2501 | { |
2502 | struct window *w; | |
2452438f | 2503 | EMACS_INT startpos; |
85fe3b5e | 2504 | int top, new_top; |
7ab12479 | 2505 | |
265a9e55 | 2506 | if (NILP (window)) |
7ab12479 JB |
2507 | window = selected_window; |
2508 | else | |
b7826503 | 2509 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2510 | w = XWINDOW (window); |
a2b38b3c | 2511 | |
00d3d838 | 2512 | startpos = marker_position (w->start); |
949cf20f | 2513 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2514 | |
a2b38b3c RS |
2515 | if (MINI_WINDOW_P (w) && top > 0) |
2516 | error ("Can't expand minibuffer to full frame"); | |
2517 | ||
70728a80 | 2518 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2519 | |
00d3d838 KH |
2520 | /* Try to minimize scrolling, by setting the window start to the point |
2521 | will cause the text at the old window start to be at the same place | |
2522 | on the frame. But don't try to do this if the window start is | |
2523 | outside the visible portion (as might happen when the display is | |
2524 | not current, due to typeahead). */ | |
949cf20f | 2525 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2526 | if (new_top != top |
2527 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2528 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2529 | { | |
2530 | struct position pos; | |
2531 | struct buffer *obuf = current_buffer; | |
2532 | ||
2533 | Fset_buffer (w->buffer); | |
2534 | /* This computation used to temporarily move point, but that can | |
2535 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2536 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2537 | |
b73ea88e | 2538 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2539 | w->window_end_valid = Qnil; |
b73ea88e RS |
2540 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2541 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2542 | : Qnil); |
80622eec RS |
2543 | /* We need to do this, so that the window-scroll-functions |
2544 | get called. */ | |
4d047f50 | 2545 | w->optional_new_start = Qt; |
00d3d838 KH |
2546 | |
2547 | set_buffer_internal (obuf); | |
2548 | } | |
5500c422 | 2549 | |
7ab12479 JB |
2550 | return Qnil; |
2551 | } | |
2552 | ||
2553 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fec89261 MR |
2554 | 0, 2, "bDelete windows on (buffer): ", |
2555 | doc: /* Delete all windows showing BUFFER-OR-NAME. | |
2556 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2557 | defaults to the current buffer. | |
2558 | ||
fdb82f93 PJ |
2559 | Optional second argument FRAME controls which frames are affected. |
2560 | If optional argument FRAME is `visible', search all visible frames. | |
2561 | If FRAME is 0, search all visible and iconified frames. | |
2562 | If FRAME is nil, search all frames. | |
2563 | If FRAME is t, search only the selected frame. | |
d653c8cc | 2564 | If FRAME is a frame, search only that frame. |
fec89261 MR |
2565 | When a window showing BUFFER-OR-NAME is dedicated and the only window of |
2566 | its frame, that frame is deleted when there are other frames left. */) | |
5842a27b | 2567 | (Lisp_Object buffer_or_name, Lisp_Object frame) |
7ab12479 | 2568 | { |
fec89261 MR |
2569 | Lisp_Object buffer; |
2570 | ||
26f6279d JB |
2571 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2572 | expects. */ | |
c520265e RS |
2573 | if (NILP (frame)) |
2574 | frame = Qt; | |
2575 | else if (EQ (frame, Qt)) | |
2576 | frame = Qnil; | |
26f6279d | 2577 | |
fec89261 MR |
2578 | if (NILP (buffer_or_name)) |
2579 | buffer = Fcurrent_buffer (); | |
2580 | else | |
7ab12479 | 2581 | { |
fec89261 | 2582 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2583 | CHECK_BUFFER (buffer); |
7ab12479 | 2584 | } |
177c0ea7 | 2585 | |
fec89261 MR |
2586 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
2587 | ||
7ab12479 JB |
2588 | return Qnil; |
2589 | } | |
2590 | ||
2591 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 | 2592 | Sreplace_buffer_in_windows, |
fec89261 MR |
2593 | 0, 1, "bReplace buffer in windows: ", |
2594 | doc: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it. | |
2595 | BUFFER-OR-NAME may be a buffer or the name of an existing buffer and | |
2596 | defaults to the current buffer. | |
2597 | ||
2598 | When a window showing BUFFER-OR-NAME is dedicated that window is | |
2599 | deleted. If that window is the only window on its frame, that frame is | |
2600 | deleted too when there are other frames left. If there are no other | |
2601 | frames left, some other buffer is displayed in that window. */) | |
5842a27b | 2602 | (Lisp_Object buffer_or_name) |
fec89261 MR |
2603 | { |
2604 | Lisp_Object buffer; | |
2605 | ||
2606 | if (NILP (buffer_or_name)) | |
2607 | buffer = Fcurrent_buffer (); | |
2608 | else | |
7ab12479 | 2609 | { |
fec89261 | 2610 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 2611 | CHECK_BUFFER (buffer); |
7ab12479 | 2612 | } |
fec89261 MR |
2613 | |
2614 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
2615 | ||
7ab12479 JB |
2616 | return Qnil; |
2617 | } | |
ff58478b RS |
2618 | |
2619 | /* Replace BUFFER with some other buffer in all windows | |
2620 | of all frames, even those on other keyboards. */ | |
2621 | ||
2622 | void | |
971de7fb | 2623 | replace_buffer_in_all_windows (Lisp_Object buffer) |
ff58478b RS |
2624 | { |
2625 | Lisp_Object tail, frame; | |
2626 | ||
ff58478b RS |
2627 | /* A single call to window_loop won't do the job |
2628 | because it only considers frames on the current keyboard. | |
2629 | So loop manually over frames, and handle each one. */ | |
2630 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2631 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2632 | } |
7ab12479 JB |
2633 | \f |
2634 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2635 | |
2636 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2637 | might crash Emacs. */ | |
5500c422 | 2638 | |
a481b3ea | 2639 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2640 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2641 | |
047aaeb9 MR |
2642 | /* For wp non-zero the total number of columns of window w. Otherwise |
2643 | the total number of lines of w. */ | |
a481b3ea | 2644 | |
047aaeb9 MR |
2645 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2646 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2647 | |
2648 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2649 | minimum allowable size. */ | |
5500c422 | 2650 | |
605be8af | 2651 | void |
971de7fb | 2652 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2653 | { |
628df3bf | 2654 | /* For height, we have to see: |
54b8bcb5 RS |
2655 | how many windows the frame has at minimum (one or two), |
2656 | and whether it has a menu bar or other special stuff at the top. */ | |
2657 | int min_height | |
2658 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2659 | ? MIN_SAFE_WINDOW_HEIGHT | |
2660 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2661 | |
5500c422 GM |
2662 | if (FRAME_TOP_MARGIN (frame) > 0) |
2663 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2664 | |
2665 | if (*rows < min_height) | |
2666 | *rows = min_height; | |
2667 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2668 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2669 | } | |
2670 | ||
233a4a2c GM |
2671 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2672 | check if W's width can be changed, otherwise check W's height. | |
2673 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2674 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2675 | either. */ | |
c1636aa6 | 2676 | |
233a4a2c | 2677 | static int |
971de7fb | 2678 | window_fixed_size_p (struct window *w, int width_p, int check_siblings_p) |
233a4a2c GM |
2679 | { |
2680 | int fixed_p; | |
2681 | struct window *c; | |
177c0ea7 | 2682 | |
233a4a2c GM |
2683 | if (!NILP (w->hchild)) |
2684 | { | |
2685 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2686 | |
233a4a2c GM |
2687 | if (width_p) |
2688 | { | |
047aaeb9 | 2689 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2690 | children are. */ |
2691 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2692 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2693 | fixed_p = c == NULL; | |
2694 | } | |
2695 | else | |
2696 | { | |
047aaeb9 | 2697 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2698 | children is. */ |
2699 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2700 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2701 | fixed_p = c != NULL; | |
2702 | } | |
2703 | } | |
2704 | else if (!NILP (w->vchild)) | |
2705 | { | |
2706 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2707 | |
233a4a2c GM |
2708 | if (width_p) |
2709 | { | |
047aaeb9 | 2710 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2711 | children is. */ |
2712 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2713 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2714 | fixed_p = c != NULL; | |
2715 | } | |
2716 | else | |
2717 | { | |
047aaeb9 | 2718 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2719 | children are. */ |
2720 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2721 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2722 | fixed_p = c == NULL; | |
2723 | } | |
2724 | } | |
2725 | else if (BUFFERP (w->buffer)) | |
2726 | { | |
3df0580e AS |
2727 | struct buffer *old = current_buffer; |
2728 | Lisp_Object val; | |
177c0ea7 | 2729 | |
3df0580e AS |
2730 | current_buffer = XBUFFER (w->buffer); |
2731 | val = find_symbol_value (Qwindow_size_fixed); | |
2732 | current_buffer = old; | |
a34dfd12 | 2733 | |
3df0580e AS |
2734 | fixed_p = 0; |
2735 | if (!EQ (val, Qunbound)) | |
2736 | { | |
2737 | fixed_p = !NILP (val); | |
177c0ea7 | 2738 | |
3df0580e AS |
2739 | if (fixed_p |
2740 | && ((EQ (val, Qheight) && width_p) | |
2741 | || (EQ (val, Qwidth) && !width_p))) | |
2742 | fixed_p = 0; | |
233a4a2c GM |
2743 | } |
2744 | ||
2745 | /* Can't tell if this one is resizable without looking at | |
2746 | siblings. If all siblings are fixed-size this one is too. */ | |
2747 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2748 | { | |
2749 | Lisp_Object child; | |
177c0ea7 | 2750 | |
9beb8baa | 2751 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2752 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2753 | break; | |
2754 | ||
2755 | if (NILP (child)) | |
9beb8baa | 2756 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2757 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2758 | break; | |
2759 | ||
2760 | if (NILP (child)) | |
2761 | fixed_p = 1; | |
2762 | } | |
2763 | } | |
2764 | else | |
2765 | fixed_p = 1; | |
2766 | ||
2767 | return fixed_p; | |
2768 | } | |
177c0ea7 | 2769 | |
047aaeb9 MR |
2770 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2771 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2772 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2773 | return values that won't crash Emacs and don't hide components like | |
2774 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2775 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2776 | |
2777 | static int | |
971de7fb | 2778 | window_min_size_2 (struct window *w, int width_p, int safe_p) |
f1de8c77 | 2779 | { |
047aaeb9 MR |
2780 | /* We should consider buffer-local values of window_min_height and |
2781 | window_min_width here. */ | |
f1de8c77 | 2782 | if (width_p) |
047aaeb9 MR |
2783 | { |
2784 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
12bb3111 | 2785 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2786 | + WINDOW_SCROLL_BAR_COLS (w)); |
2787 | ||
2788 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2789 | } | |
f1de8c77 | 2790 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2791 | return 1; |
f1de8c77 | 2792 | else |
047aaeb9 MR |
2793 | { |
2794 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2795 | + ((BUFFERP (w->buffer) | |
2796 | && !NILP (XBUFFER (w->buffer)->mode_line_format)) | |
2797 | ? 1 : 0)); | |
f1de8c77 | 2798 | |
047aaeb9 MR |
2799 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2800 | } | |
f1de8c77 | 2801 | } |
233a4a2c | 2802 | |
047aaeb9 MR |
2803 | /* Return minimum size of window W, not taking fixed-width windows into |
2804 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2805 | return the minimum height. SAFE_P non-zero means ignore | |
2806 | window-min-height|width but just return values that won't crash Emacs | |
2807 | and don't hide components like fringes, scrollbars, or modelines. If | |
2808 | W is a combination window, compute the minimum size from the minimum | |
2809 | sizes of W's children. */ | |
233a4a2c GM |
2810 | |
2811 | static int | |
971de7fb | 2812 | window_min_size_1 (struct window *w, int width_p, int safe_p) |
c1636aa6 | 2813 | { |
233a4a2c | 2814 | struct window *c; |
c1636aa6 | 2815 | int size; |
177c0ea7 | 2816 | |
233a4a2c GM |
2817 | if (!NILP (w->hchild)) |
2818 | { | |
047aaeb9 | 2819 | /* W is a horizontal combination. */ |
233a4a2c GM |
2820 | c = XWINDOW (w->hchild); |
2821 | size = 0; | |
177c0ea7 | 2822 | |
233a4a2c GM |
2823 | if (width_p) |
2824 | { | |
047aaeb9 MR |
2825 | /* The minimum width of a horizontal combination is the sum of |
2826 | the minimum widths of its children. */ | |
233a4a2c GM |
2827 | while (c) |
2828 | { | |
047aaeb9 | 2829 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2830 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2831 | } | |
2832 | } | |
2833 | else | |
2834 | { | |
047aaeb9 MR |
2835 | /* The minimum height of a horizontal combination is the |
2836 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2837 | while (c) |
2838 | { | |
047aaeb9 | 2839 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2840 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2841 | } | |
2842 | } | |
2843 | } | |
2844 | else if (!NILP (w->vchild)) | |
2845 | { | |
047aaeb9 | 2846 | /* W is a vertical combination. */ |
233a4a2c GM |
2847 | c = XWINDOW (w->vchild); |
2848 | size = 0; | |
177c0ea7 | 2849 | |
233a4a2c GM |
2850 | if (width_p) |
2851 | { | |
047aaeb9 MR |
2852 | /* The minimum width of a vertical combination is the maximum |
2853 | of the minimum widths of its children. */ | |
233a4a2c GM |
2854 | while (c) |
2855 | { | |
047aaeb9 | 2856 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2857 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2858 | } | |
2859 | } | |
2860 | else | |
2861 | { | |
047aaeb9 MR |
2862 | /* The minimum height of a vertical combination is the sum of |
2863 | the minimum height of its children. */ | |
233a4a2c GM |
2864 | while (c) |
2865 | { | |
047aaeb9 | 2866 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2867 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2868 | } | |
2869 | } | |
2870 | } | |
c1636aa6 | 2871 | else |
047aaeb9 MR |
2872 | /* W is a leaf window. */ |
2873 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2874 | |
2875 | return size; | |
2876 | } | |
2877 | ||
233a4a2c | 2878 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2879 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2880 | return the minimum height. SAFE_P non-zero means ignore | |
2881 | window-min-height|width but just return values that won't crash Emacs | |
2882 | and don't hide components like fringes, scrollbars, or modelines. | |
2883 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2884 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2885 | |
233a4a2c | 2886 | static int |
971de7fb | 2887 | window_min_size (struct window *w, int width_p, int safe_p, int ignore_fixed_p, int *fixed) |
233a4a2c GM |
2888 | { |
2889 | int size, fixed_p; | |
2890 | ||
f984d4fc GM |
2891 | if (ignore_fixed_p) |
2892 | fixed_p = 0; | |
2893 | else | |
2894 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2895 | |
233a4a2c GM |
2896 | if (fixed) |
2897 | *fixed = fixed_p; | |
177c0ea7 | 2898 | |
233a4a2c | 2899 | if (fixed_p) |
047aaeb9 | 2900 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2901 | else |
047aaeb9 | 2902 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2903 | |
233a4a2c GM |
2904 | return size; |
2905 | } | |
2906 | ||
2907 | ||
79fd290e | 2908 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2909 | Return 1 if window width is ok after adjustment; 0 if window |
2910 | is still too narrow. */ | |
2911 | ||
2912 | static int | |
971de7fb | 2913 | adjust_window_margins (struct window *w) |
949cf20f KS |
2914 | { |
2915 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2916 | - WINDOW_FRINGE_COLS (w) | |
2917 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2918 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2919 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2920 | ||
2921 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2922 | return 1; | |
2923 | ||
2924 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2925 | return 0; | |
2926 | ||
2927 | /* Window's text area is too narrow, but reducing the window | |
2928 | margins will fix that. */ | |
2929 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2930 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2931 | { | |
2932 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2933 | w->left_margin_cols = w->right_margin_cols | |
2934 | = make_number (margin_cols/2); | |
2935 | else | |
2936 | w->right_margin_cols = make_number (margin_cols); | |
2937 | } | |
2938 | else | |
2939 | w->left_margin_cols = make_number (margin_cols); | |
2940 | return 1; | |
2941 | } | |
2942 | ||
047aaeb9 MR |
2943 | /* Calculate new sizes for windows in the list FORWARD when their |
2944 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
2945 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
2946 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
2947 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
2948 | shrink columns, otherwise shrink lines. | |
6b61353c | 2949 | |
047aaeb9 MR |
2950 | SAFE_P zero means windows may be sized down to window-min-height |
2951 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
2952 | non-zero means windows may be sized down to their minimum safe sizes | |
2953 | taking into account the space needed to display modelines, fringes, | |
2954 | and scrollbars. | |
6b61353c | 2955 | |
047aaeb9 MR |
2956 | This function returns an allocated array of new sizes that the caller |
2957 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
2958 | zero. A size zero means the window shall be deleted. Array index 0 | |
2959 | refers to the first window in FORWARD, 1 to the second, and so on. | |
2960 | ||
2961 | This function resizes windows proportionally to their size. It also | |
2962 | tries to preserve smaller windows by resizing larger windows before | |
2963 | resizing any window to zero. If resize_proportionally is non-nil for | |
2964 | a specific window, it will attempt to strictly resize that window | |
2965 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 2966 | static int * |
ed3751c8 | 2967 | shrink_windows (int total, int size, int nchildren, int shrinkable, |
dd4c5104 | 2968 | int resize_fixed_p, Lisp_Object forward, int width_p, int safe_p) |
6b61353c KH |
2969 | { |
2970 | int available_resize = 0; | |
047aaeb9 | 2971 | int *new_sizes, *min_sizes; |
6b61353c KH |
2972 | struct window *c; |
2973 | Lisp_Object child; | |
2974 | int smallest = total; | |
2975 | int total_removed = 0; | |
2976 | int total_shrink = total - size; | |
2977 | int i; | |
2978 | ||
2979 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 2980 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
2981 | |
2982 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2983 | { | |
2984 | int child_size; | |
2985 | ||
2986 | c = XWINDOW (child); | |
047aaeb9 | 2987 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 2988 | |
047aaeb9 | 2989 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
2990 | new_sizes[i] = -1; |
2991 | else | |
2992 | { | |
2993 | new_sizes[i] = child_size; | |
047aaeb9 MR |
2994 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
2995 | if (child_size > min_sizes[i] | |
2996 | && NILP (c->resize_proportionally)) | |
2997 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
2998 | } |
2999 | } | |
3000 | /* We might need to shrink some windows to zero. Find the smallest | |
3001 | windows and set them to 0 until we can fulfil the new size. */ | |
3002 | ||
3003 | while (shrinkable > 1 && size + available_resize < total) | |
3004 | { | |
3005 | for (i = 0; i < nchildren; ++i) | |
3006 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
3007 | smallest = new_sizes[i]; | |
3008 | ||
3009 | for (i = 0; i < nchildren; ++i) | |
3010 | if (new_sizes[i] == smallest) | |
3011 | { | |
3012 | /* Resize this window down to zero. */ | |
3013 | new_sizes[i] = 0; | |
047aaeb9 MR |
3014 | if (smallest > min_sizes[i]) |
3015 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
3016 | available_resize += smallest; |
3017 | --shrinkable; | |
3018 | total_removed += smallest; | |
3019 | ||
ef614e04 JD |
3020 | /* We don't know what the smallest is now. */ |
3021 | smallest = total; | |
3022 | ||
6b61353c KH |
3023 | /* Out of for, just remove one window at the time and |
3024 | check again if we have enough space. */ | |
3025 | break; | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | /* Now, calculate the new sizes. Try to shrink each window | |
3030 | proportional to its size. */ | |
3031 | for (i = 0; i < nchildren; ++i) | |
3032 | { | |
047aaeb9 | 3033 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 3034 | { |
047aaeb9 MR |
3035 | int to_shrink = total_shrink * new_sizes[i] / total; |
3036 | ||
3037 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
3038 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
3039 | new_sizes[i] -= to_shrink; |
3040 | total_removed += to_shrink; | |
3041 | } | |
3042 | } | |
3043 | ||
3044 | /* Any reminder due to rounding, we just subtract from windows | |
3045 | that are left and still can be shrunk. */ | |
3046 | while (total_shrink > total_removed) | |
3047 | { | |
ef614e04 JD |
3048 | int nonzero_sizes = 0; |
3049 | int nonzero_idx = -1; | |
3050 | ||
3051 | for (i = 0; i < nchildren; ++i) | |
3052 | if (new_sizes[i] > 0) | |
3053 | { | |
3054 | ++nonzero_sizes; | |
3055 | nonzero_idx = i; | |
3056 | } | |
c49a0495 | 3057 | |
6b61353c | 3058 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 3059 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
3060 | { |
3061 | --new_sizes[i]; | |
3062 | ++total_removed; | |
3063 | ||
3064 | /* Out of for, just shrink one window at the time and | |
3065 | check again if we have enough space. */ | |
3066 | break; | |
3067 | } | |
ef614e04 | 3068 | |
ef614e04 JD |
3069 | /* Special case, only one window left. */ |
3070 | if (nonzero_sizes == 1) | |
3071 | break; | |
3072 | } | |
3073 | ||
3074 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3075 | while (total_shrink < total_removed) | |
3076 | { | |
3077 | for (i = 0; i < nchildren; ++i) | |
3078 | { | |
3079 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3080 | { | |
3081 | ++new_sizes[i]; | |
3082 | --total_removed; | |
3083 | break; | |
3084 | } | |
3085 | } | |
6b61353c KH |
3086 | } |
3087 | ||
047aaeb9 MR |
3088 | xfree (min_sizes); |
3089 | ||
6b61353c KH |
3090 | return new_sizes; |
3091 | } | |
949cf20f | 3092 | |
233a4a2c | 3093 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3094 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3095 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3096 | |
3097 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3098 | they are in series. If LAST_ONLY is 1, change only the last of | |
3099 | WINDOW's children when they are in series. | |
3100 | ||
3101 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3102 | windows that become too small unless NODELETE_P is 1. When |
3103 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3104 | window-min-width when resizing windows but use safe defaults instead. | |
3105 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3106 | |
3107 | static void | |
971de7fb | 3108 | size_window (Lisp_Object window, int size, int width_p, int nodelete_p, int first_only, int last_only) |
7ab12479 | 3109 | { |
233a4a2c GM |
3110 | struct window *w = XWINDOW (window); |
3111 | struct window *c; | |
3112 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3113 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3114 | |
7ae2f10f | 3115 | size = max (0, size); |
177c0ea7 | 3116 | |
047aaeb9 MR |
3117 | /* Delete WINDOW if it's too small. */ |
3118 | if (nodelete_p != 1 && !NILP (w->parent) | |
3119 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3120 | { |
047aaeb9 MR |
3121 | delete_window (window); |
3122 | return; | |
7ab12479 JB |
3123 | } |
3124 | ||
233a4a2c | 3125 | /* Set redisplay hints. */ |
7ae2f10f GM |
3126 | w->last_modified = make_number (0); |
3127 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3128 | windows_or_buffers_changed++; |
7ae2f10f | 3129 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3130 | |
233a4a2c GM |
3131 | if (width_p) |
3132 | { | |
3133 | sideward = &w->vchild; | |
3134 | forward = &w->hchild; | |
949cf20f KS |
3135 | w->total_cols = make_number (size); |
3136 | adjust_window_margins (w); | |
233a4a2c GM |
3137 | } |
3138 | else | |
3139 | { | |
3140 | sideward = &w->hchild; | |
3141 | forward = &w->vchild; | |
949cf20f KS |
3142 | w->total_lines = make_number (size); |
3143 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3144 | } |
3145 | ||
3146 | if (!NILP (*sideward)) | |
7ab12479 | 3147 | { |
5fe0b054 | 3148 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3149 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3150 | { |
233a4a2c GM |
3151 | c = XWINDOW (child); |
3152 | if (width_p) | |
949cf20f | 3153 | c->left_col = w->left_col; |
233a4a2c | 3154 | else |
949cf20f | 3155 | c->top_line = w->top_line; |
5fe0b054 RS |
3156 | size_window (child, size, width_p, nodelete_p, |
3157 | first_only, last_only); | |
7ab12479 JB |
3158 | } |
3159 | } | |
5fe0b054 RS |
3160 | else if (!NILP (*forward) && last_only) |
3161 | { | |
3162 | /* Change the last in a series of siblings. */ | |
3163 | Lisp_Object last_child; | |
3164 | int child_size; | |
3165 | ||
3166 | for (child = *forward; !NILP (child); child = c->next) | |
3167 | { | |
3168 | c = XWINDOW (child); | |
3169 | last_child = child; | |
3170 | } | |
3171 | ||
047aaeb9 MR |
3172 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3173 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3174 | width_p, nodelete_p, first_only, last_only); |
3175 | } | |
3176 | else if (!NILP (*forward) && first_only) | |
3177 | { | |
3178 | /* Change the first in a series of siblings. */ | |
3179 | int child_size; | |
3180 | ||
3181 | child = *forward; | |
3182 | c = XWINDOW (child); | |
3183 | ||
3184 | if (width_p) | |
3185 | c->left_col = w->left_col; | |
3186 | else | |
3187 | c->top_line = w->top_line; | |
3188 | ||
047aaeb9 MR |
3189 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3190 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3191 | width_p, nodelete_p, first_only, last_only); |
3192 | } | |
233a4a2c | 3193 | else if (!NILP (*forward)) |
7ab12479 | 3194 | { |
233a4a2c GM |
3195 | int fixed_size, each, extra, n; |
3196 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3197 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3198 | int *new_sizes = NULL; |
233a4a2c | 3199 | |
5fe0b054 | 3200 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3201 | number of child windows. */ |
8b6d9dc9 | 3202 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3203 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3204 | { |
8b6d9dc9 | 3205 | int child_size; |
177c0ea7 | 3206 | |
7ab12479 | 3207 | c = XWINDOW (child); |
047aaeb9 | 3208 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3209 | total += child_size; |
177c0ea7 | 3210 | |
233a4a2c GM |
3211 | if (window_fixed_size_p (c, width_p, 0)) |
3212 | { | |
8b6d9dc9 | 3213 | fixed_size += child_size; |
233a4a2c GM |
3214 | ++nfixed; |
3215 | } | |
3216 | } | |
7ab12479 | 3217 | |
233a4a2c GM |
3218 | /* If the new size is smaller than fixed_size, or if there |
3219 | aren't any resizable windows, allow resizing fixed-size | |
3220 | windows. */ | |
3221 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3222 | ||
6b61353c | 3223 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3224 | value of extra takes care of rounding errors. */ |
3225 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3226 | if (size < total && n > 1) |
047aaeb9 MR |
3227 | new_sizes = shrink_windows (total, size, nchildren, n, |
3228 | resize_fixed_p, *forward, width_p, | |
3229 | nodelete_p == 2); | |
6b61353c KH |
3230 | else |
3231 | { | |
3232 | each = (size - total) / n; | |
3233 | extra = (size - total) - n * each; | |
3234 | } | |
233a4a2c GM |
3235 | |
3236 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3237 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3238 | last_pos = first_pos; |
6b61353c | 3239 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3240 | { |
3241 | int new_size, old_size; | |
177c0ea7 | 3242 | |
233a4a2c | 3243 | c = XWINDOW (child); |
047aaeb9 | 3244 | old_size = WINDOW_TOTAL_SIZE (c, width_p); |
233a4a2c | 3245 | new_size = old_size; |
7ab12479 | 3246 | |
233a4a2c GM |
3247 | /* The top or left edge position of this child equals the |
3248 | bottom or right edge of its predecessor. */ | |
3249 | if (width_p) | |
949cf20f | 3250 | c->left_col = make_number (last_pos); |
233a4a2c | 3251 | else |
949cf20f | 3252 | c->top_line = make_number (last_pos); |
7ab12479 | 3253 | |
233a4a2c GM |
3254 | /* If this child can be resized, do it. */ |
3255 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3256 | { | |
6b61353c | 3257 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3258 | extra = 0; |
3259 | } | |
177c0ea7 | 3260 | |
047aaeb9 | 3261 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3262 | edge positions to children, so it's not a no-op if we |
3263 | didn't change the child's size. */ | |
5fe0b054 | 3264 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3265 | |
3266 | /* Remember the bottom/right edge position of this child; it | |
3267 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3268 | last_pos += new_size; |
7ab12479 | 3269 | } |
233a4a2c | 3270 | |
70fdbb46 | 3271 | xfree (new_sizes); |
6b61353c | 3272 | |
233a4a2c GM |
3273 | /* We should have covered the parent exactly with child windows. */ |
3274 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3275 | |
7ab12479 | 3276 | /* Now delete any children that became too small. */ |
047aaeb9 | 3277 | if (nodelete_p != 1) |
233a4a2c | 3278 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3279 | { |
233a4a2c | 3280 | int child_size; |
047aaeb9 | 3281 | |
233a4a2c | 3282 | c = XWINDOW (child); |
047aaeb9 MR |
3283 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3284 | size_window (child, child_size, width_p, nodelete_p, | |
3285 | first_only, last_only); | |
7ab12479 JB |
3286 | } |
3287 | } | |
3288 | } | |
3289 | ||
233a4a2c | 3290 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3291 | WINDOW's children. NODELETE zero means windows that have become |
3292 | smaller than window-min-height in the process may be deleted. | |
3293 | NODELETE 1 means never delete windows that become too small in the | |
3294 | process. (The caller should check later and do so if appropriate.) | |
3295 | NODELETE 2 means delete only windows that have become too small to be | |
3296 | displayed correctly. */ | |
7ab12479 | 3297 | |
5e14b1fc | 3298 | void |
971de7fb | 3299 | set_window_height (Lisp_Object window, int height, int nodelete) |
7ab12479 | 3300 | { |
5fe0b054 | 3301 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3302 | } |
7ab12479 | 3303 | |
233a4a2c | 3304 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3305 | WINDOW's children. NODELETE zero means windows that have become |
3306 | smaller than window-min-width in the process may be deleted. | |
3307 | NODELETE 1 means never delete windows that become too small in the | |
3308 | process. (The caller should check later and do so if appropriate.) | |
3309 | NODELETE 2 means delete only windows that have become too small to be | |
3310 | displayed correctly. */ | |
7ab12479 | 3311 | |
233a4a2c | 3312 | void |
971de7fb | 3313 | set_window_width (Lisp_Object window, int width, int nodelete) |
233a4a2c | 3314 | { |
5fe0b054 | 3315 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3316 | } |
233a4a2c | 3317 | |
cdbc7fec KS |
3318 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3319 | ||
3320 | void | |
971de7fb | 3321 | change_window_heights (Lisp_Object window, int n) |
cdbc7fec KS |
3322 | { |
3323 | struct window *w = XWINDOW (window); | |
3324 | ||
949cf20f KS |
3325 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3326 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3327 | |
949cf20f KS |
3328 | if (INTEGERP (w->orig_top_line)) |
3329 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3330 | if (INTEGERP (w->orig_total_lines)) | |
3331 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3332 | |
3333 | /* Handle just the top child in a vertical split. */ | |
3334 | if (!NILP (w->vchild)) | |
3335 | change_window_heights (w->vchild, n); | |
3336 | ||
3337 | /* Adjust all children in a horizontal split. */ | |
3338 | for (window = w->hchild; !NILP (window); window = w->next) | |
3339 | { | |
3340 | w = XWINDOW (window); | |
3341 | change_window_heights (window, n); | |
3342 | } | |
3343 | } | |
3344 | ||
7ab12479 | 3345 | \f |
1d8d96fa | 3346 | int window_select_count; |
7ab12479 | 3347 | |
56613f06 SM |
3348 | EXFUN (Fset_window_fringes, 4); |
3349 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3350 | |
6a44ffb3 SM |
3351 | static void |
3352 | run_funs (Lisp_Object funs) | |
3353 | { | |
3354 | for (; CONSP (funs); funs = XCDR (funs)) | |
3355 | if (!EQ (XCAR (funs), Qt)) | |
3356 | call0 (XCAR (funs)); | |
3357 | } | |
3358 | ||
3359 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
c6932ecd | 3360 | static Lisp_Object select_frame_norecord (Lisp_Object frame); |
6a44ffb3 | 3361 | |
ef264c42 SM |
3362 | void |
3363 | run_window_configuration_change_hook (struct frame *f) | |
3364 | { | |
fec89261 | 3365 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3366 | Lisp_Object frame, global_wcch |
3367 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3368 | XSETFRAME (frame, f); | |
3369 | ||
3370 | if (NILP (Vrun_hooks)) | |
3371 | return; | |
3372 | ||
fec89261 MR |
3373 | if (SELECTED_FRAME () != f) |
3374 | { | |
c6932ecd MR |
3375 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); |
3376 | Fselect_frame (frame, Qt); | |
fec89261 | 3377 | } |
6a44ffb3 SM |
3378 | |
3379 | /* Use the right buffer. Matters when running the local hooks. */ | |
3380 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3381 | { | |
3382 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3383 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3384 | } | |
3385 | ||
3386 | /* Look for buffer-local values. */ | |
3387 | { | |
3388 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3389 | for (; CONSP (windows); windows = XCDR (windows)) | |
3390 | { | |
3391 | Lisp_Object window = XCAR (windows); | |
3392 | Lisp_Object buffer = Fwindow_buffer (window); | |
3393 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3394 | buffer))) | |
3395 | { | |
3396 | int count = SPECPDL_INDEX (); | |
3397 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3398 | select_window_norecord (window); | |
3399 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3400 | buffer)); | |
fec89261 MR |
3401 | unbind_to (count, Qnil); |
3402 | } | |
6a44ffb3 SM |
3403 | } |
3404 | } | |
047aaeb9 | 3405 | |
6a44ffb3 SM |
3406 | run_funs (global_wcch); |
3407 | unbind_to (count, Qnil); | |
ef264c42 SM |
3408 | } |
3409 | ||
5500c422 GM |
3410 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3411 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3412 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3413 | margins, fringes, and scroll-bar settings of the window are not | |
3414 | reset from the buffer's local settings. */ | |
7ab12479 | 3415 | |
5500c422 | 3416 | void |
971de7fb | 3417 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3418 | { |
3419 | struct window *w = XWINDOW (window); | |
3420 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3421 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3422 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3423 | |
3424 | w->buffer = buffer; | |
86e48436 RS |
3425 | |
3426 | if (EQ (window, selected_window)) | |
5500c422 | 3427 | b->last_selected_window = window; |
beb4e312 | 3428 | |
c49a0495 KS |
3429 | /* Let redisplay errors through. */ |
3430 | b->display_error_modiff = 0; | |
3431 | ||
beb4e312 | 3432 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3433 | if (INTEGERP (b->display_count)) |
3434 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3435 | b->display_time = Fcurrent_time (); | |
86e48436 | 3436 | |
d834a2e9 | 3437 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 3438 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 3439 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 3440 | w->window_end_valid = Qnil; |
c3b232e4 | 3441 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3442 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3443 | vscroll. This case happens for example when called from |
3444 | change_frame_size_1, where we use a dummy call to | |
3445 | Fset_window_buffer on the frame's selected window (and no other) | |
3446 | just in order to run window-configuration-change-hook. | |
3447 | Resetting hscroll and vscroll here is problematic for things like | |
3448 | image-mode and doc-view-mode since it resets the image's position | |
3449 | whenever we resize the frame. */ | |
3450 | w->hscroll = w->min_hscroll = make_number (0); | |
3451 | w->vscroll = 0; | |
3452 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3453 | set_marker_restricted (w->start, | |
3454 | make_number (b->last_window_start), | |
3455 | buffer); | |
3456 | w->start_at_line_beg = Qnil; | |
3457 | w->force_start = Qnil; | |
3458 | XSETFASTINT (w->last_modified, 0); | |
3459 | XSETFASTINT (w->last_overlay_modified, 0); | |
3460 | } | |
3461 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3462 | I doubt it's worth the trouble. */ | |
7ab12479 | 3463 | windows_or_buffers_changed++; |
5b03d3c0 | 3464 | |
da39107c | 3465 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3466 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3467 | because that might itself be a local variable. */ | |
da39107c | 3468 | if (window_initialized) |
5b03d3c0 | 3469 | { |
da39107c | 3470 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3471 | Fset_buffer (buffer); |
3472 | } | |
3473 | ||
a1562258 SM |
3474 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3475 | ||
949cf20f KS |
3476 | if (!keep_margins_p) |
3477 | { | |
3478 | /* Set left and right marginal area width etc. from buffer. */ | |
3479 | ||
79fd290e | 3480 | /* This may call adjust_window_margins three times, so |
949cf20f | 3481 | temporarily disable window margins. */ |
6b61353c KH |
3482 | Lisp_Object save_left = w->left_margin_cols; |
3483 | Lisp_Object save_right = w->right_margin_cols; | |
3484 | ||
949cf20f KS |
3485 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3486 | ||
3487 | Fset_window_fringes (window, | |
3488 | b->left_fringe_width, b->right_fringe_width, | |
3489 | b->fringes_outside_margins); | |
3490 | ||
3491 | Fset_window_scroll_bars (window, | |
3492 | b->scroll_bar_width, | |
3493 | b->vertical_scroll_bar_type, Qnil); | |
3494 | ||
6b61353c KH |
3495 | w->left_margin_cols = save_left; |
3496 | w->right_margin_cols = save_right; | |
3497 | ||
949cf20f KS |
3498 | Fset_window_margins (window, |
3499 | b->left_margin_cols, b->right_margin_cols); | |
3500 | } | |
7ab12479 | 3501 | |
5500c422 GM |
3502 | if (run_hooks_p) |
3503 | { | |
3504 | if (! NILP (Vwindow_scroll_functions)) | |
3505 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3506 | Fmarker_position (w->start)); | |
ef264c42 | 3507 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3508 | } |
543f5fb1 | 3509 | |
5b03d3c0 | 3510 | unbind_to (count, Qnil); |
5500c422 | 3511 | } |
5b03d3c0 | 3512 | |
5500c422 | 3513 | |
949cf20f | 3514 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc MR |
3515 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
3516 | WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer | |
3517 | or the name of an existing buffer. Optional third argument KEEP-MARGINS | |
3518 | non-nil means that WINDOW's current display margins, fringe widths, and | |
3519 | scroll bar settings are preserved; the default is to reset these from | |
fec89261 | 3520 | the local settings for BUFFER-OR-NAME or the frame defaults. Return nil. |
d653c8cc | 3521 | |
7bfac547 MR |
3522 | This function throws an error when WINDOW is strongly dedicated to its |
3523 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3524 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3525 | |
8fef9de1 MR |
3526 | This function runs `window-scroll-functions' before running |
3527 | `window-configuration-change-hook'. */) | |
5842a27b | 3528 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3529 | { |
d653c8cc | 3530 | register Lisp_Object tem, buffer; |
5500c422 | 3531 | register struct window *w = decode_window (window); |
5500c422 | 3532 | |
bed0c171 | 3533 | XSETWINDOW (window, w); |
d653c8cc | 3534 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3535 | CHECK_BUFFER (buffer); |
5500c422 GM |
3536 | if (NILP (XBUFFER (buffer)->name)) |
3537 | error ("Attempt to display deleted buffer"); | |
3538 | ||
3539 | tem = w->buffer; | |
aac0c6e3 MR |
3540 | if (NILP (tem)) |
3541 | error ("Window is deleted"); | |
3542 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3543 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3544 | { |
f5385255 SM |
3545 | if (!EQ (tem, buffer)) |
3546 | if (EQ (w->dedicated, Qt)) | |
3547 | error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem)->name)); | |
3548 | else | |
3549 | w->dedicated = Qnil; | |
5500c422 GM |
3550 | |
3551 | unshow_buffer (w); | |
3552 | } | |
3553 | ||
949cf20f | 3554 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3555 | return Qnil; |
3556 | } | |
3557 | ||
d653c8cc MR |
3558 | /* Note that selected_window can be nil when this is called from |
3559 | Fset_window_configuration. */ | |
2d0834cc | 3560 | |
14d87dc9 | 3561 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3562 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3563 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3564 | and make WINDOW the frame's selected window. Return WINDOW. |
4e822bdc | 3565 | Optional second arg NORECORD non-nil means do not put this buffer |
c6932ecd MR |
3566 | at the front of the list of recently selected ones and do not |
3567 | make this window the most recently selected one. | |
282f7831 | 3568 | |
4e822bdc MR |
3569 | Note that the main editor command loop selects the buffer of the |
3570 | selected window before each command. */) | |
5842a27b | 3571 | (register Lisp_Object window, Lisp_Object norecord) |
7ab12479 JB |
3572 | { |
3573 | register struct window *w; | |
719eaeb1 | 3574 | register struct window *ow; |
1ae1a37d | 3575 | struct frame *sf; |
7ab12479 | 3576 | |
b7826503 | 3577 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3578 | |
3579 | w = XWINDOW (window); | |
50e88778 | 3580 | w->frozen_window_start_p = 0; |
7ab12479 | 3581 | |
4e822bdc MR |
3582 | if (NILP (norecord)) |
3583 | { | |
3584 | ++window_select_count; | |
3585 | XSETFASTINT (w->use_time, window_select_count); | |
13b5221f | 3586 | record_buffer (w->buffer); |
4e822bdc MR |
3587 | } |
3588 | ||
7ab12479 JB |
3589 | if (EQ (window, selected_window)) |
3590 | return window; | |
3591 | ||
ca2d5566 SM |
3592 | sf = SELECTED_FRAME (); |
3593 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3594 | { | |
3595 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3596 | /* Use this rather than Fhandle_switch_frame | |
3597 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3598 | move around in the state where a minibuffer in a separate | |
3599 | frame is active. */ | |
c6932ecd | 3600 | Fselect_frame (WINDOW_FRAME (w), norecord); |
ca2d5566 SM |
3601 | /* Fselect_frame called us back so we've done all the work already. */ |
3602 | eassert (EQ (window, selected_window)); | |
3603 | return window; | |
3604 | } | |
3605 | else | |
3606 | sf->selected_window = window; | |
3607 | ||
a46c0153 RS |
3608 | /* Store the current buffer's actual point into the |
3609 | old selected window. It belongs to that window, | |
3610 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3611 | if (!NILP (selected_window)) |
3612 | { | |
3613 | ow = XWINDOW (selected_window); | |
3614 | if (! NILP (ow->buffer)) | |
3615 | set_marker_both (ow->pointm, ow->buffer, | |
3616 | BUF_PT (XBUFFER (ow->buffer)), | |
3617 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3618 | } | |
7ab12479 JB |
3619 | |
3620 | selected_window = window; | |
7ab12479 | 3621 | |
7ab12479 JB |
3622 | Fset_buffer (w->buffer); |
3623 | ||
86e48436 RS |
3624 | XBUFFER (w->buffer)->last_selected_window = window; |
3625 | ||
7ab12479 JB |
3626 | /* Go to the point recorded in the window. |
3627 | This is important when the buffer is in more | |
3628 | than one window. It also matters when | |
3629 | redisplay_window has altered point after scrolling, | |
3630 | because it makes the change only in the window. */ | |
3631 | { | |
2452438f | 3632 | register EMACS_INT new_point = marker_position (w->pointm); |
7ab12479 JB |
3633 | if (new_point < BEGV) |
3634 | SET_PT (BEGV); | |
a9c95e08 | 3635 | else if (new_point > ZV) |
7ab12479 JB |
3636 | SET_PT (ZV); |
3637 | else | |
3638 | SET_PT (new_point); | |
3639 | } | |
3640 | ||
3641 | windows_or_buffers_changed++; | |
3642 | return window; | |
3643 | } | |
14d87dc9 SM |
3644 | |
3645 | static Lisp_Object | |
971de7fb | 3646 | select_window_norecord (Lisp_Object window) |
14d87dc9 | 3647 | { |
ab6d1131 MR |
3648 | return WINDOW_LIVE_P (window) |
3649 | ? Fselect_window (window, Qt) : selected_window; | |
14d87dc9 | 3650 | } |
c6932ecd MR |
3651 | |
3652 | static Lisp_Object | |
971de7fb | 3653 | select_frame_norecord (Lisp_Object frame) |
c6932ecd MR |
3654 | { |
3655 | return FRAME_LIVE_P (XFRAME (frame)) | |
3656 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3657 | } | |
b7354ddf | 3658 | \f |
87478b52 | 3659 | Lisp_Object |
971de7fb | 3660 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3661 | { |
87478b52 | 3662 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3663 | } |
3664 | ||
6b61353c KH |
3665 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3666 | 0, 1, 0, | |
5a1048a5 | 3667 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3668 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3669 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3670 | displaying that buffer. */) |
5842a27b | 3671 | (Lisp_Object object) |
6b61353c KH |
3672 | { |
3673 | if (NILP (object)) | |
3674 | { | |
3675 | windows_or_buffers_changed++; | |
3676 | update_mode_lines++; | |
3677 | return Qt; | |
3678 | } | |
3679 | ||
3680 | if (WINDOWP (object)) | |
3681 | { | |
3682 | struct window *w = XWINDOW (object); | |
3683 | mark_window_display_accurate (object, 0); | |
3684 | w->update_mode_line = Qt; | |
3685 | if (BUFFERP (w->buffer)) | |
3686 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3687 | ++update_mode_lines; | |
3688 | return Qt; | |
3689 | } | |
0cc1039f | 3690 | |
6b61353c KH |
3691 | if (STRINGP (object)) |
3692 | object = Fget_buffer (object); | |
3693 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3694 | { | |
3695 | /* Walk all windows looking for buffer, and force update | |
3696 | of each of those windows. */ | |
3697 | ||
3698 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3699 | return NILP (object) ? Qnil : Qt; | |
3700 | } | |
3701 | ||
3702 | /* If nothing suitable was found, just return. | |
3703 | We could signal an error, but this feature will typically be used | |
3704 | asynchronously in timers or process sentinels, so we don't. */ | |
3705 | return Qnil; | |
3706 | } | |
3707 | ||
3708 | ||
7ab12479 | 3709 | void |
971de7fb | 3710 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3711 | { |
3712 | register struct buffer *old = current_buffer; | |
3713 | register Lisp_Object window; | |
3714 | register struct window *w; | |
3715 | ||
bccd3dd1 RS |
3716 | XBUFFER (buf)->directory = current_buffer->directory; |
3717 | ||
7ab12479 | 3718 | Fset_buffer (buf); |
c6367666 | 3719 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3720 | BEGV = BEG; |
3721 | ZV = Z; | |
3722 | SET_PT (BEG); | |
06be4f85 | 3723 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3724 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3725 | #endif |
7ab12479 JB |
3726 | set_buffer_internal (old); |
3727 | ||
e67a1dea | 3728 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3729 | call1 (Vtemp_buffer_show_function, buf); |
3730 | else | |
3731 | { | |
87478b52 | 3732 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3733 | |
1ae1a37d | 3734 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3735 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3736 | Vminibuf_scroll_window = window; |
3737 | w = XWINDOW (window); | |
d834a2e9 | 3738 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3739 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3740 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3741 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3742 | |
beb4e312 | 3743 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3744 | and its buffer current. */ |
2d0834cc SM |
3745 | |
3746 | if (!NILP (Vrun_hooks) | |
3747 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3748 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3749 | { |
2d0834cc SM |
3750 | int count = SPECPDL_INDEX (); |
3751 | Lisp_Object prev_window, prev_buffer; | |
3752 | prev_window = selected_window; | |
3753 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3754 | |
2d0834cc SM |
3755 | /* Select the window that was chosen, for running the hook. |
3756 | Note: Both Fselect_window and select_window_norecord may | |
3757 | set-buffer to the buffer displayed in the window, | |
3758 | so we need to save the current buffer. --stef */ | |
3759 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3760 | record_unwind_protect (select_window_norecord, prev_window); | |
3761 | Fselect_window (window, Qt); | |
3762 | Fset_buffer (w->buffer); | |
3763 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3764 | unbind_to (count, Qnil); | |
2cccc823 RS |
3765 | } |
3766 | } | |
7ab12479 JB |
3767 | } |
3768 | \f | |
dfcf069d | 3769 | static void |
971de7fb | 3770 | make_dummy_parent (Lisp_Object window) |
7ab12479 | 3771 | { |
cffec418 | 3772 | Lisp_Object new; |
7ab12479 | 3773 | register struct window *o, *p; |
cffec418 | 3774 | int i; |
7ab12479 | 3775 | |
cffec418 | 3776 | o = XWINDOW (window); |
26605be9 | 3777 | p = allocate_window (); |
cffec418 | 3778 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3779 | ((struct Lisp_Vector *) p)->contents[i] |
3780 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3781 | XSETWINDOW (new, p); |
7ab12479 | 3782 | |
2a1893f4 SM |
3783 | ++sequence_number; |
3784 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3785 | |
3786 | /* Put new into window structure in place of window */ | |
3787 | replace_window (window, new); | |
3788 | ||
3789 | o->next = Qnil; | |
3790 | o->prev = Qnil; | |
3791 | o->vchild = Qnil; | |
3792 | o->hchild = Qnil; | |
3793 | o->parent = new; | |
3794 | ||
3795 | p->start = Qnil; | |
3796 | p->pointm = Qnil; | |
3797 | p->buffer = Qnil; | |
3798 | } | |
3799 | ||
3800 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3801 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3802 | WINDOW defaults to selected one and SIZE to half its size. | |
87527026 MR |
3803 | If optional third arg HORIZONTAL is non-nil, split side by side and put |
3804 | SIZE columns in the first of the pair. In that case, SIZE includes that | |
3805 | window's scroll bar, or the divider column to its right. | |
c2755926 | 3806 | Interactively, all arguments are nil. |
c2755926 | 3807 | Returns the newly created window (which is the lower or rightmost one). |
19ca94ce RS |
3808 | The upper or leftmost window is the original one, and remains selected |
3809 | if it was selected before. | |
3810 | ||
87527026 | 3811 | See Info node `(elisp)Splitting Windows' for more details and examples. */) |
5842a27b | 3812 | (Lisp_Object window, Lisp_Object size, Lisp_Object horizontal) |
7ab12479 JB |
3813 | { |
3814 | register Lisp_Object new; | |
3815 | register struct window *o, *p; | |
c0807608 | 3816 | FRAME_PTR fo; |
77ae0fe3 | 3817 | register int size_int; |
7ab12479 | 3818 | |
265a9e55 | 3819 | if (NILP (window)) |
7ab12479 JB |
3820 | window = selected_window; |
3821 | else | |
b7826503 | 3822 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3823 | |
3824 | o = XWINDOW (window); | |
c0807608 | 3825 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3826 | |
77ae0fe3 | 3827 | if (NILP (size)) |
7ab12479 | 3828 | { |
87527026 | 3829 | if (!NILP (horizontal)) |
c0807608 | 3830 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3831 | the usable space in columns by two. |
3832 | We round up, since the left-hand window may include | |
3833 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3834 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3835 | else |
949cf20f | 3836 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3837 | } |
3838 | else | |
3839 | { | |
b7826503 | 3840 | CHECK_NUMBER (size); |
77ae0fe3 | 3841 | size_int = XINT (size); |
7ab12479 JB |
3842 | } |
3843 | ||
3844 | if (MINI_WINDOW_P (o)) | |
3845 | error ("Attempt to split minibuffer window"); | |
87527026 | 3846 | else if (window_fixed_size_p (o, !NILP (horizontal), 0)) |
233a4a2c | 3847 | error ("Attempt to split fixed-size window"); |
7ab12479 | 3848 | |
87527026 | 3849 | if (NILP (horizontal)) |
7ab12479 | 3850 | { |
047aaeb9 MR |
3851 | int window_safe_height = window_min_size_2 (o, 0, 0); |
3852 | ||
f1de8c77 | 3853 | if (size_int < window_safe_height) |
77ae0fe3 | 3854 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 3855 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 3856 | error ("Window height %d too small (after splitting)", |
949cf20f | 3857 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3858 | if (NILP (o->parent) |
3859 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3860 | { |
3861 | make_dummy_parent (window); | |
3862 | new = o->parent; | |
3863 | XWINDOW (new)->vchild = window; | |
3864 | } | |
3865 | } | |
3866 | else | |
3867 | { | |
047aaeb9 MR |
3868 | int window_safe_width = window_min_size_2 (o, 1, 0); |
3869 | ||
f1de8c77 | 3870 | if (size_int < window_safe_width) |
77ae0fe3 | 3871 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 3872 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 3873 | error ("Window width %d too small (after splitting)", |
949cf20f | 3874 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
3875 | if (NILP (o->parent) |
3876 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
3877 | { |
3878 | make_dummy_parent (window); | |
3879 | new = o->parent; | |
3880 | XWINDOW (new)->hchild = window; | |
3881 | } | |
3882 | } | |
3883 | ||
3884 | /* Now we know that window's parent is a vertical combination | |
3885 | if we are dividing vertically, or a horizontal combination | |
3886 | if we are making side-by-side windows */ | |
3887 | ||
3888 | windows_or_buffers_changed++; | |
c0807608 | 3889 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
3890 | new = make_window (); |
3891 | p = XWINDOW (new); | |
3892 | ||
44fa5b1e | 3893 | p->frame = o->frame; |
7ab12479 | 3894 | p->next = o->next; |
265a9e55 | 3895 | if (!NILP (p->next)) |
7ab12479 JB |
3896 | XWINDOW (p->next)->prev = new; |
3897 | p->prev = window; | |
3898 | o->next = new; | |
3899 | p->parent = o->parent; | |
3900 | p->buffer = Qt; | |
5500c422 | 3901 | p->window_end_valid = Qnil; |
72af86bd | 3902 | memset (&p->last_cursor, 0, sizeof p->last_cursor); |
7ab12479 | 3903 | |
949cf20f KS |
3904 | /* Duplicate special geometry settings. */ |
3905 | ||
3906 | p->left_margin_cols = o->left_margin_cols; | |
3907 | p->right_margin_cols = o->right_margin_cols; | |
3908 | p->left_fringe_width = o->left_fringe_width; | |
3909 | p->right_fringe_width = o->right_fringe_width; | |
3910 | p->fringes_outside_margins = o->fringes_outside_margins; | |
3911 | p->scroll_bar_width = o->scroll_bar_width; | |
3912 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
3913 | ||
44fa5b1e | 3914 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 3915 | |
87527026 | 3916 | if (!NILP (horizontal)) |
7ab12479 | 3917 | { |
949cf20f KS |
3918 | p->total_lines = o->total_lines; |
3919 | p->top_line = o->top_line; | |
3920 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
3921 | XSETFASTINT (o->total_cols, size_int); | |
3922 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
3923 | adjust_window_margins (p); | |
3924 | adjust_window_margins (o); | |
7ab12479 JB |
3925 | } |
3926 | else | |
3927 | { | |
949cf20f KS |
3928 | p->left_col = o->left_col; |
3929 | p->total_cols = o->total_cols; | |
3930 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
3931 | XSETFASTINT (o->total_lines, size_int); | |
3932 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
3933 | } |
3934 | ||
5500c422 GM |
3935 | /* Adjust glyph matrices. */ |
3936 | adjust_glyphs (fo); | |
949cf20f KS |
3937 | |
3938 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
3939 | return new; |
3940 | } | |
3941 | \f | |
56ebfae2 | 3942 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
aac0c6e3 MR |
3943 | doc: /* Make selected window SIZE lines taller. |
3944 | Interactively, if no argument is given, make the selected window one | |
3945 | line taller. If optional argument HORIZONTAL is non-nil, make selected | |
3946 | window wider by SIZE columns. If SIZE is negative, shrink the window by | |
3947 | -SIZE lines or columns. Return nil. | |
3948 | ||
3949 | This function can delete windows if they get too small. The size of | |
3950 | fixed size windows is not altered by this function. */) | |
5842a27b | 3951 | (Lisp_Object size, Lisp_Object horizontal) |
7ab12479 | 3952 | { |
aac0c6e3 MR |
3953 | CHECK_NUMBER (size); |
3954 | enlarge_window (selected_window, XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3955 | |
eeca6f6f | 3956 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3957 | |
7ab12479 JB |
3958 | return Qnil; |
3959 | } | |
3960 | ||
56ebfae2 | 3961 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
aac0c6e3 MR |
3962 | doc: /* Make selected window SIZE lines smaller. |
3963 | Interactively, if no argument is given, make the selected window one | |
3964 | line smaller. If optional argument HORIZONTAL is non-nil, make the | |
3965 | window narrower by SIZE columns. If SIZE is negative, enlarge selected | |
3966 | window by -SIZE lines or columns. Return nil. | |
3967 | ||
3968 | This function can delete windows if they get too small. The size of | |
3969 | fixed size windows is not altered by this function. */) | |
5842a27b | 3970 | (Lisp_Object size, Lisp_Object horizontal) |
aac0c6e3 MR |
3971 | { |
3972 | CHECK_NUMBER (size); | |
3973 | enlarge_window (selected_window, -XINT (size), !NILP (horizontal)); | |
543f5fb1 | 3974 | |
eeca6f6f | 3975 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 3976 | |
7ab12479 JB |
3977 | return Qnil; |
3978 | } | |
3979 | ||
3980 | int | |
971de7fb | 3981 | window_height (Lisp_Object window) |
7ab12479 JB |
3982 | { |
3983 | register struct window *p = XWINDOW (window); | |
949cf20f | 3984 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
3985 | } |
3986 | ||
3987 | int | |
971de7fb | 3988 | window_width (Lisp_Object window) |
7ab12479 JB |
3989 | { |
3990 | register struct window *p = XWINDOW (window); | |
949cf20f | 3991 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
3992 | } |
3993 | ||
177c0ea7 | 3994 | |
7ab12479 | 3995 | #define CURBEG(w) \ |
5afc696a | 3996 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
3997 | |
3998 | #define CURSIZE(w) \ | |
5afc696a | 3999 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 4000 | |
233a4a2c | 4001 | |
047aaeb9 MR |
4002 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
4003 | horizontally; zero means do it vertically. | |
f95284d2 | 4004 | |
5afc696a | 4005 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 4006 | request. If they become too small in the process, they may be |
56ebfae2 | 4007 | deleted. */ |
7ab12479 | 4008 | |
f984d4fc | 4009 | static void |
971de7fb | 4010 | enlarge_window (Lisp_Object window, int delta, int horiz_flag) |
7ab12479 | 4011 | { |
86c8e823 | 4012 | Lisp_Object parent, next, prev; |
233a4a2c | 4013 | struct window *p; |
3578db3c KR |
4014 | Lisp_Object *sizep; |
4015 | int maximum; | |
f57e2426 | 4016 | int (*sizefun) (Lisp_Object) |
5afc696a | 4017 | = horiz_flag ? window_width : window_height; |
f57e2426 | 4018 | void (*setsizefun) (Lisp_Object, int, int) |
5afc696a | 4019 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4020 | |
233a4a2c | 4021 | /* Give up if this window cannot be resized. */ |
5afc696a | 4022 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4023 | error ("Window is not resizable"); |
4024 | ||
4025 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4026 | while (1) |
4027 | { | |
4028 | p = XWINDOW (window); | |
4029 | parent = p->parent; | |
177c0ea7 | 4030 | |
265a9e55 | 4031 | if (NILP (parent)) |
7ab12479 | 4032 | { |
5afc696a | 4033 | if (horiz_flag) |
7ab12479 JB |
4034 | error ("No other window to side of this one"); |
4035 | break; | |
4036 | } | |
177c0ea7 | 4037 | |
5afc696a | 4038 | if (horiz_flag |
233a4a2c | 4039 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4040 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4041 | break; |
177c0ea7 | 4042 | |
7ab12479 JB |
4043 | window = parent; |
4044 | } | |
4045 | ||
05c2896a | 4046 | sizep = &CURSIZE (window); |
7ab12479 | 4047 | |
7ab12479 JB |
4048 | { |
4049 | register int maxdelta; | |
7ab12479 | 4050 | |
f95284d2 RS |
4051 | /* Compute the maximum size increment this window can have. */ |
4052 | ||
56ebfae2 RS |
4053 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4054 | /* This is a main window followed by a minibuffer. */ | |
4055 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4056 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4057 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4058 | /* This is a minibuffer following a main window. */ |
4059 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4060 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4061 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4062 | /* This is a frame with only one window, a minibuffer-only |
4063 | or a minibufferless frame. */ | |
4064 | : (delta = 0)); | |
7ab12479 JB |
4065 | |
4066 | if (delta > maxdelta) | |
4067 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4068 | the full frame, or make the only window aside from the |
4069 | minibuffer the full frame. */ | |
7ab12479 | 4070 | delta = maxdelta; |
6b54027b | 4071 | } |
d5783c40 | 4072 | |
047aaeb9 MR |
4073 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4074 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4075 | { |
543f5fb1 | 4076 | delete_window (window); |
d5783c40 | 4077 | return; |
6b54027b RS |
4078 | } |
4079 | ||
4080 | if (delta == 0) | |
4081 | return; | |
7ab12479 | 4082 | |
f95284d2 | 4083 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4084 | maximum = 0; |
9beb8baa | 4085 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4086 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4087 | horiz_flag, 0, 0, 0); |
9beb8baa | 4088 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4089 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4090 | horiz_flag, 0, 0, 0); |
db98a733 | 4091 | |
f95284d2 | 4092 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4093 | if (delta <= maximum) |
7ab12479 | 4094 | { |
db98a733 RS |
4095 | Lisp_Object first_unaffected; |
4096 | Lisp_Object first_affected; | |
233a4a2c | 4097 | int fixed_p; |
db98a733 RS |
4098 | |
4099 | next = p->next; | |
4100 | prev = p->prev; | |
4101 | first_affected = window; | |
4102 | /* Look at one sibling at a time, | |
4103 | moving away from this window in both directions alternately, | |
4104 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4105 | while (delta != 0 |
56ebfae2 | 4106 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4107 | { |
db98a733 RS |
4108 | if (! NILP (next)) |
4109 | { | |
c1636aa6 | 4110 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4111 | - window_min_size (XWINDOW (next), horiz_flag, |
4112 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4113 | if (!fixed_p) |
4114 | { | |
4115 | if (this_one > delta) | |
4116 | this_one = delta; | |
177c0ea7 | 4117 | |
233a4a2c | 4118 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4119 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4120 | |
233a4a2c GM |
4121 | delta -= this_one; |
4122 | } | |
177c0ea7 | 4123 | |
db98a733 RS |
4124 | next = XWINDOW (next)->next; |
4125 | } | |
177c0ea7 | 4126 | |
db98a733 RS |
4127 | if (delta == 0) |
4128 | break; | |
177c0ea7 | 4129 | |
56ebfae2 | 4130 | if (! NILP (prev)) |
db98a733 | 4131 | { |
c1636aa6 | 4132 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4133 | - window_min_size (XWINDOW (prev), horiz_flag, |
4134 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4135 | if (!fixed_p) |
4136 | { | |
4137 | if (this_one > delta) | |
4138 | this_one = delta; | |
177c0ea7 | 4139 | |
233a4a2c | 4140 | first_affected = prev; |
177c0ea7 | 4141 | |
233a4a2c | 4142 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4143 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4144 | |
4145 | delta -= this_one; | |
4146 | } | |
177c0ea7 | 4147 | |
db98a733 RS |
4148 | prev = XWINDOW (prev)->prev; |
4149 | } | |
4150 | } | |
4151 | ||
233a4a2c GM |
4152 | xassert (delta == 0); |
4153 | ||
db98a733 RS |
4154 | /* Now recalculate the edge positions of all the windows affected, |
4155 | based on the new sizes. */ | |
4156 | first_unaffected = next; | |
4157 | prev = first_affected; | |
4158 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4159 | prev = next, next = XWINDOW (next)->next) | |
4160 | { | |
3578db3c | 4161 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4162 | /* This does not change size of NEXT, |
4163 | but it propagates the new top edge to its children */ | |
4164 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4165 | } | |
7ab12479 JB |
4166 | } |
4167 | else | |
4168 | { | |
4169 | register int delta1; | |
4170 | register int opht = (*sizefun) (parent); | |
4171 | ||
3578db3c | 4172 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4173 | { |
4174 | /* If trying to grow this window to or beyond size of the parent, | |
4175 | just delete all the sibling windows. */ | |
dc1ab1ee | 4176 | Lisp_Object start, tem, next; |
daf516d3 | 4177 | |
dc1ab1ee RS |
4178 | start = XWINDOW (parent)->vchild; |
4179 | if (NILP (start)) | |
4180 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4181 | |
dc1ab1ee RS |
4182 | /* Delete any siblings that come after WINDOW. */ |
4183 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4184 | while (! NILP (tem)) |
4185 | { | |
4186 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4187 | delete_window (tem); |
4188 | tem = next; | |
4189 | } | |
4190 | ||
4191 | /* Delete any siblings that come after WINDOW. | |
4192 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4193 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4194 | tem = start; |
4195 | while (! EQ (tem, window)) | |
4196 | { | |
4197 | next = XWINDOW (tem)->next; | |
4198 | delete_window (tem); | |
daf516d3 RS |
4199 | tem = next; |
4200 | } | |
4201 | } | |
7ab12479 | 4202 | else |
233a4a2c GM |
4203 | { |
4204 | /* Otherwise, make delta1 just right so that if we add | |
4205 | delta1 lines to this window and to the parent, and then | |
4206 | shrink the parent back to its original size, the new | |
4207 | proportional size of this window will increase by delta. | |
4208 | ||
4209 | The function size_window will compute the new height h' | |
4210 | of the window from delta1 as: | |
177c0ea7 | 4211 | |
233a4a2c GM |
4212 | e = delta1/n |
4213 | x = delta1 - delta1/n * n for the 1st resizable child | |
4214 | h' = h + e + x | |
4215 | ||
4216 | where n is the number of children that can be resized. | |
4217 | We can ignore x by choosing a delta1 that is a multiple of | |
4218 | n. We want the height of this window to come out as | |
177c0ea7 | 4219 | |
233a4a2c GM |
4220 | h' = h + delta |
4221 | ||
4222 | So, delta1 must be | |
177c0ea7 | 4223 | |
233a4a2c GM |
4224 | h + e = h + delta |
4225 | delta1/n = delta | |
4226 | delta1 = n * delta. | |
4227 | ||
a5731348 | 4228 | The number of children n equals the number of resizable |
233a4a2c | 4229 | children of this window + 1 because we know window itself |
04bf5b65 | 4230 | is resizable (otherwise we would have signaled an error). |
047aaeb9 MR |
4231 | |
4232 | This reasoning is not correct when other windows become too | |
4233 | small and shrink_windows refuses to delete them. Below we | |
4234 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4235 | |
4236 | struct window *w = XWINDOW (window); | |
4237 | Lisp_Object s; | |
4238 | int n = 1; | |
4239 | ||
9beb8baa | 4240 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4241 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4242 | ++n; |
9beb8baa | 4243 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4244 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4245 | ++n; |
4246 | ||
4247 | delta1 = n * delta; | |
7ab12479 | 4248 | |
daf516d3 RS |
4249 | /* Add delta1 lines or columns to this window, and to the parent, |
4250 | keeping things consistent while not affecting siblings. */ | |
4251 | XSETINT (CURSIZE (parent), opht + delta1); | |
4252 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4253 | ||
4254 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4255 | shrinking this window and siblings proportionately. This |
4256 | brings parent back to correct size. Delta1 was calculated | |
4257 | so this makes this window the desired size, taking it all | |
4258 | out of the siblings. | |
4259 | ||
4260 | Temporarily set resize_proportionally to Qt to assure that, | |
4261 | if necessary, shrink_windows deletes smaller windows rather | |
4262 | than shrink this window. */ | |
4263 | w->resize_proportionally = Qt; | |
daf516d3 | 4264 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4265 | w->resize_proportionally = Qnil; |
daf516d3 | 4266 | } |
7ab12479 JB |
4267 | } |
4268 | ||
d834a2e9 | 4269 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4270 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4271 | |
4272 | /* Adjust glyph matrices. */ | |
4273 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4274 | } |
c1636aa6 | 4275 | |
0d384044 RS |
4276 | |
4277 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4278 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4279 | zero means adjust the height, moving the bottom edge. | |
4280 | ||
4281 | Following siblings of the selected window are resized to fulfill | |
4282 | the size request. If they become too small in the process, they | |
4283 | are not deleted; instead, we signal an error. */ | |
4284 | ||
4285 | static void | |
971de7fb | 4286 | adjust_window_trailing_edge (Lisp_Object window, int delta, int horiz_flag) |
0d384044 RS |
4287 | { |
4288 | Lisp_Object parent, child; | |
4289 | struct window *p; | |
4290 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4291 | int delcount = window_deletion_count; | |
4292 | ||
0d384044 RS |
4293 | CHECK_WINDOW (window); |
4294 | ||
4295 | /* Give up if this window cannot be resized. */ | |
4296 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4297 | error ("Window is not resizable"); | |
4298 | ||
4299 | while (1) | |
4300 | { | |
bd99e242 RS |
4301 | Lisp_Object first_parallel = Qnil; |
4302 | ||
c32de52a | 4303 | if (NILP (window)) |
0d384044 | 4304 | { |
5fe0b054 RS |
4305 | /* This happens if WINDOW on the previous iteration was |
4306 | at top level of the window tree. */ | |
0d384044 | 4307 | Fset_window_configuration (old_config); |
c32de52a | 4308 | error ("Specified window edge is fixed"); |
0d384044 RS |
4309 | } |
4310 | ||
c32de52a RS |
4311 | p = XWINDOW (window); |
4312 | parent = p->parent; | |
4313 | ||
bd99e242 RS |
4314 | /* See if this level has windows in parallel in the specified |
4315 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4316 | if (horiz_flag) | |
4317 | { | |
4318 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4319 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4320 | else if (NILP (parent) && !NILP (p->next)) |
4321 | { | |
4322 | /* Handle the vertical chain of main window and minibuffer | |
4323 | which has no parent. */ | |
4324 | first_parallel = window; | |
4325 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4326 | first_parallel = XWINDOW (first_parallel)->prev; | |
4327 | } | |
bd99e242 RS |
4328 | } |
4329 | else | |
4330 | { | |
4331 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4332 | first_parallel = XWINDOW (parent)->hchild; | |
4333 | } | |
4334 | ||
c32de52a | 4335 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4336 | and this window is the last one, and there is no higher level, |
4337 | its trailing edge is fixed. */ | |
4338 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4339 | && NILP (parent)) | |
c32de52a RS |
4340 | { |
4341 | Fset_window_configuration (old_config); | |
4342 | error ("Specified window edge is fixed"); | |
4343 | } | |
4344 | ||
0d384044 RS |
4345 | /* Don't make this window too small. */ |
4346 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4347 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4348 | { |
4349 | Fset_window_configuration (old_config); | |
4350 | error ("Cannot adjust window size as specified"); | |
4351 | } | |
4352 | ||
4353 | /* Clear out some redisplay caches. */ | |
4354 | XSETFASTINT (p->last_modified, 0); | |
4355 | XSETFASTINT (p->last_overlay_modified, 0); | |
4356 | ||
4357 | /* Adjust this window's edge. */ | |
4358 | XSETINT (CURSIZE (window), | |
4359 | XINT (CURSIZE (window)) + delta); | |
4360 | ||
4361 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4362 | make them smaller, and exit the loop. |
4363 | ||
0d384044 RS |
4364 | (If we reach the top of the tree and can never do this, |
4365 | we will fail and report an error, above.) */ | |
bd99e242 | 4366 | if (NILP (first_parallel)) |
0d384044 | 4367 | { |
c32de52a | 4368 | if (!NILP (p->next)) |
0d384044 | 4369 | { |
e99c7521 JD |
4370 | /* This may happen for the minibuffer. In that case |
4371 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4372 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4373 | { |
4374 | Fset_window_configuration (old_config); | |
4375 | error ("Cannot adjust window size as specified"); | |
4376 | } | |
4377 | ||
0d384044 RS |
4378 | XSETINT (CURBEG (p->next), |
4379 | XINT (CURBEG (p->next)) + delta); | |
4380 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4381 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4382 | break; |
4383 | } | |
4384 | } | |
4385 | else | |
4386 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4387 | Change the size of the other siblings. */ | |
bd99e242 | 4388 | for (child = first_parallel; |
0d384044 RS |
4389 | ! NILP (child); |
4390 | child = XWINDOW (child)->next) | |
4391 | if (! EQ (child, window)) | |
4392 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4393 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4394 | |
4395 | window = parent; | |
4396 | } | |
4397 | ||
4398 | /* If we made a window so small it got deleted, | |
4399 | we failed. Report failure. */ | |
4400 | if (delcount != window_deletion_count) | |
4401 | { | |
4402 | Fset_window_configuration (old_config); | |
4403 | error ("Cannot adjust window size as specified"); | |
4404 | } | |
4405 | ||
4406 | /* Adjust glyph matrices. */ | |
4407 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4408 | } | |
4409 | ||
7ab12479 JB |
4410 | #undef CURBEG |
4411 | #undef CURSIZE | |
4412 | ||
0d384044 RS |
4413 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4414 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4415 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4416 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4417 | Otherwise, adjust the height, moving the bottom edge. |
4418 | ||
4419 | Following siblings of the selected window are resized to fulfill | |
4420 | the size request. If they become too small in the process, they | |
4421 | are not deleted; instead, we signal an error. */) | |
5842a27b | 4422 | (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal) |
0d384044 RS |
4423 | { |
4424 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4425 | if (NILP (window)) |
4426 | window = selected_window; | |
0d384044 RS |
4427 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4428 | ||
eeca6f6f SM |
4429 | run_window_configuration_change_hook |
4430 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4431 | |
4432 | return Qnil; | |
4433 | } | |
4434 | ||
5500c422 | 4435 | |
f984d4fc GM |
4436 | \f |
4437 | /*********************************************************************** | |
4438 | Resizing Mini-Windows | |
4439 | ***********************************************************************/ | |
4440 | ||
f57e2426 | 4441 | static void shrink_window_lowest_first (struct window *, int); |
f984d4fc | 4442 | |
43b4a21f GM |
4443 | enum save_restore_action |
4444 | { | |
4445 | CHECK_ORIG_SIZES, | |
4446 | SAVE_ORIG_SIZES, | |
4447 | RESTORE_ORIG_SIZES | |
4448 | }; | |
4449 | ||
f57e2426 J |
4450 | static int save_restore_orig_size (struct window *, |
4451 | enum save_restore_action); | |
f984d4fc GM |
4452 | |
4453 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4454 | from lowest windows first. */ | |
4455 | ||
4456 | static void | |
971de7fb | 4457 | shrink_window_lowest_first (struct window *w, int height) |
f984d4fc GM |
4458 | { |
4459 | struct window *c; | |
4460 | Lisp_Object child; | |
4461 | int old_height; | |
4462 | ||
4463 | xassert (!MINI_WINDOW_P (w)); | |
4464 | ||
4465 | /* Set redisplay hints. */ | |
4466 | XSETFASTINT (w->last_modified, 0); | |
4467 | XSETFASTINT (w->last_overlay_modified, 0); | |
4468 | windows_or_buffers_changed++; | |
4469 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4470 | ||
949cf20f KS |
4471 | old_height = XFASTINT (w->total_lines); |
4472 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4473 | |
4474 | if (!NILP (w->hchild)) | |
4475 | { | |
4476 | for (child = w->hchild; !NILP (child); child = c->next) | |
4477 | { | |
4478 | c = XWINDOW (child); | |
949cf20f | 4479 | c->top_line = w->top_line; |
f984d4fc GM |
4480 | shrink_window_lowest_first (c, height); |
4481 | } | |
4482 | } | |
4483 | else if (!NILP (w->vchild)) | |
4484 | { | |
4485 | Lisp_Object last_child; | |
4486 | int delta = old_height - height; | |
4487 | int last_top; | |
6bbd7a29 GM |
4488 | |
4489 | last_child = Qnil; | |
177c0ea7 | 4490 | |
f984d4fc GM |
4491 | /* Find the last child. We are taking space from lowest windows |
4492 | first, so we iterate over children from the last child | |
4493 | backwards. */ | |
9beb8baa | 4494 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4495 | last_child = child; |
4496 | ||
047aaeb9 | 4497 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4498 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4499 | { | |
4500 | int this_one; | |
177c0ea7 | 4501 | |
f984d4fc | 4502 | c = XWINDOW (child); |
047aaeb9 | 4503 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4504 | |
4505 | if (this_one > delta) | |
4506 | this_one = delta; | |
4507 | ||
949cf20f | 4508 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4509 | delta -= this_one; |
4510 | } | |
4511 | ||
4512 | /* Compute new positions. */ | |
949cf20f | 4513 | last_top = XINT (w->top_line); |
f984d4fc GM |
4514 | for (child = w->vchild; !NILP (child); child = c->next) |
4515 | { | |
4516 | c = XWINDOW (child); | |
949cf20f KS |
4517 | c->top_line = make_number (last_top); |
4518 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4519 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4520 | } |
4521 | } | |
4522 | } | |
4523 | ||
4524 | ||
43b4a21f GM |
4525 | /* Save, restore, or check positions and sizes in the window tree |
4526 | rooted at W. ACTION says what to do. | |
f984d4fc | 4527 | |
949cf20f KS |
4528 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4529 | orig_total_lines members are valid for all windows in the window | |
4530 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4531 | |
43b4a21f | 4532 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4533 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4534 | |
949cf20f KS |
4535 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4536 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4537 | |
4538 | static int | |
971de7fb | 4539 | save_restore_orig_size (struct window *w, enum save_restore_action action) |
f984d4fc | 4540 | { |
43b4a21f GM |
4541 | int success_p = 1; |
4542 | ||
f984d4fc GM |
4543 | while (w) |
4544 | { | |
4545 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4546 | { |
4547 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4548 | success_p = 0; | |
4549 | } | |
f984d4fc | 4550 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4551 | { |
4552 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4553 | success_p = 0; | |
4554 | } | |
177c0ea7 | 4555 | |
43b4a21f | 4556 | switch (action) |
f984d4fc | 4557 | { |
43b4a21f | 4558 | case CHECK_ORIG_SIZES: |
949cf20f | 4559 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4560 | return 0; |
4561 | break; | |
4562 | ||
4563 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4564 | w->orig_top_line = w->top_line; |
4565 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4566 | XSETFASTINT (w->last_modified, 0); |
4567 | XSETFASTINT (w->last_overlay_modified, 0); | |
4568 | break; | |
4569 | ||
4570 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4571 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4572 | w->top_line = w->orig_top_line; | |
4573 | w->total_lines = w->orig_total_lines; | |
4574 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4575 | XSETFASTINT (w->last_modified, 0); |
4576 | XSETFASTINT (w->last_overlay_modified, 0); | |
4577 | break; | |
4578 | ||
4579 | default: | |
4580 | abort (); | |
f984d4fc | 4581 | } |
43b4a21f | 4582 | |
f984d4fc GM |
4583 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4584 | } | |
43b4a21f GM |
4585 | |
4586 | return success_p; | |
f984d4fc GM |
4587 | } |
4588 | ||
4589 | ||
4590 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4591 | without deleting other windows. */ | |
4592 | ||
4593 | void | |
971de7fb | 4594 | grow_mini_window (struct window *w, int delta) |
f984d4fc GM |
4595 | { |
4596 | struct frame *f = XFRAME (w->frame); | |
4597 | struct window *root; | |
177c0ea7 | 4598 | |
f984d4fc | 4599 | xassert (MINI_WINDOW_P (w)); |
522d013a JB |
4600 | /* Commenting out the following assertion goes against the stated interface |
4601 | of the function, but it currently does not seem to do anything useful. | |
4602 | See discussion of this issue in the thread for bug#4534. | |
4603 | xassert (delta >= 0); */ | |
177c0ea7 | 4604 | |
f984d4fc GM |
4605 | /* Compute how much we can enlarge the mini-window without deleting |
4606 | other windows. */ | |
4607 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
522d013a | 4608 | if (delta > 0) |
f984d4fc | 4609 | { |
047aaeb9 | 4610 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4611 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4612 | /* Note that the root window may already be smaller than |
eafa3196 | 4613 | min_height. */ |
949cf20f | 4614 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4615 | } |
177c0ea7 | 4616 | |
f984d4fc GM |
4617 | if (delta) |
4618 | { | |
4619 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4620 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4621 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4622 | |
4623 | /* Shrink other windows. */ | |
949cf20f | 4624 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4625 | |
4626 | /* Grow the mini-window. */ | |
949cf20f KS |
4627 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4628 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4629 | XSETFASTINT (w->last_modified, 0); |
4630 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4631 | |
f984d4fc GM |
4632 | adjust_glyphs (f); |
4633 | } | |
4634 | } | |
4635 | ||
4636 | ||
86c8e823 GM |
4637 | /* Shrink mini-window W. If there is recorded info about window sizes |
4638 | before a call to grow_mini_window, restore recorded window sizes. | |
4639 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4640 | line. */ | |
f984d4fc GM |
4641 | |
4642 | void | |
971de7fb | 4643 | shrink_mini_window (struct window *w) |
f984d4fc GM |
4644 | { |
4645 | struct frame *f = XFRAME (w->frame); | |
4646 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4647 | ||
43b4a21f | 4648 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4649 | { |
43b4a21f | 4650 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4651 | adjust_glyphs (f); |
4652 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4653 | windows_or_buffers_changed = 1; | |
4654 | } | |
949cf20f | 4655 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4656 | { |
0130fe1a GM |
4657 | /* Distribute the additional lines of the mini-window |
4658 | among the other windows. */ | |
86c8e823 GM |
4659 | Lisp_Object window; |
4660 | XSETWINDOW (window, w); | |
56ebfae2 | 4661 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4662 | } |
f984d4fc GM |
4663 | } |
4664 | ||
4665 | ||
4666 | \f | |
5500c422 GM |
4667 | /* Mark window cursors off for all windows in the window tree rooted |
4668 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4669 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4670 | the frame are cleared. */ | |
4671 | ||
4672 | void | |
971de7fb | 4673 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4674 | { |
4675 | while (w) | |
4676 | { | |
4677 | if (!NILP (w->hchild)) | |
4678 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4679 | else if (!NILP (w->vchild)) | |
4680 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4681 | else | |
4682 | w->phys_cursor_on_p = 0; | |
4683 | ||
4684 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4685 | } | |
4686 | } | |
4687 | ||
4688 | ||
e9c195b1 | 4689 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4690 | |
4691 | int | |
971de7fb | 4692 | window_internal_height (struct window *w) |
7ab12479 | 4693 | { |
949cf20f | 4694 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4695 | |
e9c195b1 GM |
4696 | if (!MINI_WINDOW_P (w)) |
4697 | { | |
4698 | if (!NILP (w->parent) | |
4699 | || !NILP (w->vchild) | |
4700 | || !NILP (w->hchild) | |
4701 | || !NILP (w->next) | |
4702 | || !NILP (w->prev) | |
4703 | || WINDOW_WANTS_MODELINE_P (w)) | |
4704 | --ht; | |
7ab12479 | 4705 | |
e9c195b1 GM |
4706 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4707 | --ht; | |
4708 | } | |
7ab12479 JB |
4709 | |
4710 | return ht; | |
4711 | } | |
4712 | ||
535e0b8e JB |
4713 | |
4714 | /* Return the number of columns in W. | |
a3c87d4e | 4715 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4716 | separating W from the sibling to its right. */ |
5500c422 | 4717 | |
535e0b8e | 4718 | int |
971de7fb | 4719 | window_box_text_cols (struct window *w) |
535e0b8e | 4720 | { |
5500c422 | 4721 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4722 | int width = XINT (w->total_cols); |
535e0b8e | 4723 | |
949cf20f | 4724 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4725 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4726 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4727 | else if (!FRAME_WINDOW_P (f) | |
4728 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4729 | /* The column of `|' characters separating side-by-side windows |
4730 | occupies one column only. */ | |
4731 | width -= 1; | |
4732 | ||
5500c422 | 4733 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4734 | /* On window-systems, fringes and display margins cannot be |
4735 | used for normal text. */ | |
4736 | width -= (WINDOW_FRINGE_COLS (w) | |
4737 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4738 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4739 | |
4740 | return width; | |
535e0b8e JB |
4741 | } |
4742 | ||
5500c422 GM |
4743 | \f |
4744 | /************************************************************************ | |
4745 | Window Scrolling | |
4746 | ***********************************************************************/ | |
535e0b8e | 4747 | |
5500c422 | 4748 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4749 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4750 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4751 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4752 | means don't signal an error if we try to move over BEGV or ZV, | |
4753 | respectively. */ | |
7ab12479 | 4754 | |
101d1605 | 4755 | static void |
971de7fb | 4756 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 4757 | { |
cba59f77 RS |
4758 | immediate_quit = 1; |
4759 | ||
5500c422 GM |
4760 | /* If we must, use the pixel-based version which is much slower than |
4761 | the line-based one but can handle varying line heights. */ | |
4762 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4763 | window_scroll_pixel_based (window, n, whole, noerror); | |
4764 | else | |
4765 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4766 | |
4767 | immediate_quit = 0; | |
5500c422 GM |
4768 | } |
4769 | ||
4770 | ||
4771 | /* Implementation of window_scroll that works based on pixel line | |
4772 | heights. See the comment of window_scroll for parameter | |
4773 | descriptions. */ | |
4774 | ||
4775 | static void | |
971de7fb | 4776 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4777 | { |
4778 | struct it it; | |
4779 | struct window *w = XWINDOW (window); | |
4780 | struct text_pos start; | |
5500c422 | 4781 | int this_scroll_margin; |
9d14503e | 4782 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4783 | int vscrolled = 0; |
5a857365 | 4784 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4785 | |
4786 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4787 | |
5500c422 | 4788 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4789 | the screen. Allow PT to be partially visible, otherwise |
4790 | something like (scroll-down 1) with PT in the line before | |
4791 | the partially visible one would recenter. */ | |
5a857365 KS |
4792 | |
4793 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4794 | { |
4795 | /* Move backward half the height of the window. Performance note: | |
4796 | vmotion used here is about 10% faster, but would give wrong | |
4797 | results for variable height lines. */ | |
4798 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4799 | it.current_y = it.last_visible_y; | |
f204989e | 4800 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4801 | |
5500c422 GM |
4802 | /* The function move_iterator_vertically may move over more than |
4803 | the specified y-distance. If it->w is small, e.g. a | |
4804 | mini-buffer window, we may end up in front of the window's | |
4805 | display area. This is the case when Start displaying at the | |
4806 | start of the line containing PT in this case. */ | |
4807 | if (it.current_y <= 0) | |
4808 | { | |
4809 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4810 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4811 | it.current_y = 0; |
4812 | } | |
4813 | ||
4814 | start = it.current.pos; | |
4815 | } | |
e56263e5 KS |
4816 | else if (auto_window_vscroll_p) |
4817 | { | |
5a857365 | 4818 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4819 | { |
4820 | int px; | |
4821 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4822 | if (whole) | |
e856c216 KS |
4823 | dy = max ((window_box_height (w) |
4824 | - next_screen_context_lines * dy), | |
4825 | dy); | |
e56263e5 KS |
4826 | dy *= n; |
4827 | ||
5a857365 | 4828 | if (n < 0) |
e56263e5 | 4829 | { |
5a857365 KS |
4830 | /* Only vscroll backwards if already vscrolled forwards. */ |
4831 | if (w->vscroll < 0 && rtop > 0) | |
4832 | { | |
4833 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4834 | Fset_window_vscroll (window, make_number (px), Qt); | |
4835 | return; | |
4836 | } | |
e56263e5 | 4837 | } |
5a857365 | 4838 | if (n > 0) |
e56263e5 | 4839 | { |
5a857365 KS |
4840 | /* Do vscroll if already vscrolled or only display line. */ |
4841 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4842 | { | |
4843 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4844 | Fset_window_vscroll (window, make_number (px), Qt); | |
4845 | return; | |
4846 | } | |
4847 | ||
4848 | /* Maybe modify window start instead of scrolling. */ | |
4849 | if (rbot > 0 || w->vscroll < 0) | |
4850 | { | |
2452438f | 4851 | EMACS_INT spos; |
5a857365 KS |
4852 | |
4853 | Fset_window_vscroll (window, make_number (0), Qt); | |
4854 | /* If there are other text lines above the current row, | |
4855 | move window start to current row. Else to next row. */ | |
4856 | if (rbot > 0) | |
4857 | spos = XINT (Fline_beginning_position (Qnil)); | |
4858 | else | |
4859 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4860 | set_marker_restricted (w->start, make_number (spos), | |
4861 | w->buffer); | |
4862 | w->start_at_line_beg = Qt; | |
4863 | w->update_mode_line = Qt; | |
4864 | XSETFASTINT (w->last_modified, 0); | |
4865 | XSETFASTINT (w->last_overlay_modified, 0); | |
4866 | /* Set force_start so that redisplay_window will run the | |
4867 | window-scroll-functions. */ | |
4868 | w->force_start = Qt; | |
4869 | return; | |
4870 | } | |
e56263e5 KS |
4871 | } |
4872 | } | |
5a857365 | 4873 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4874 | Fset_window_vscroll (window, make_number (0), Qt); |
4875 | } | |
5500c422 | 4876 | |
d0c38d63 | 4877 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4878 | point in the same window line as it is now, so get that line. */ |
4879 | if (!NILP (Vscroll_preserve_screen_position)) | |
4880 | { | |
c525d842 | 4881 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4882 | calls to scroll-up, scroll-down and other commands that |
4883 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4884 | possibility of point becoming "stuck" on a tall line when |
4885 | scrolling by one line. */ | |
66fe93d1 | 4886 | if (window_scroll_pixel_based_preserve_y < 0 |
a4b000fb JL |
4887 | || !SYMBOLP (current_kboard->Vlast_command) |
4888 | || NILP (Fget (current_kboard->Vlast_command, Qscroll_command))) | |
c525d842 CY |
4889 | { |
4890 | start_display (&it, w, start); | |
4891 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4892 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4893 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4894 | } |
5500c422 GM |
4895 | } |
4896 | else | |
c876b227 SM |
4897 | window_scroll_pixel_based_preserve_y |
4898 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4899 | |
4900 | /* Move iterator it from start the specified distance forward or | |
4901 | backward. The result is the new window start. */ | |
4902 | start_display (&it, w, start); | |
4903 | if (whole) | |
4904 | { | |
2452438f | 4905 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
4906 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4907 | dy = max ((window_box_height (w) | |
4908 | - next_screen_context_lines * dy), | |
4909 | dy) * n; | |
d72340d4 GM |
4910 | |
4911 | /* Note that move_it_vertically always moves the iterator to the | |
4912 | start of a line. So, if the last line doesn't have a newline, | |
4913 | we would end up at the start of the line ending at ZV. */ | |
4914 | if (dy <= 0) | |
e856c216 KS |
4915 | { |
4916 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4917 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4918 | looking at an image that is taller that the window height. */ |
4919 | while (start_pos == IT_CHARPOS (it) | |
4920 | && start_pos > BEGV) | |
4921 | move_it_by_lines (&it, -1, 1); | |
4922 | } | |
d72340d4 | 4923 | else if (dy > 0) |
bed83ee4 | 4924 | { |
bed83ee4 KS |
4925 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4926 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4927 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4928 | looking at an image that is taller that the window height. */ |
4929 | while (start_pos == IT_CHARPOS (it) | |
4930 | && start_pos < ZV) | |
4931 | move_it_by_lines (&it, 1, 1); | |
4932 | } | |
5500c422 GM |
4933 | } |
4934 | else | |
4935 | move_it_by_lines (&it, n, 1); | |
4936 | ||
96ae58c8 RS |
4937 | /* We failed if we find ZV is already on the screen (scrolling up, |
4938 | means there's nothing past the end), or if we can't start any | |
4939 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4940 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4941 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4942 | { |
5cdb3cf3 MB |
4943 | if (IT_CHARPOS (it) == ZV) |
4944 | { | |
07ce8b53 RS |
4945 | if (it.current_y < it.last_visible_y |
4946 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4947 | > it.last_visible_y)) |
a74eca50 GM |
4948 | { |
4949 | /* The last line was only partially visible, make it fully | |
4950 | visible. */ | |
4951 | w->vscroll = (it.last_visible_y | |
4952 | - it.current_y + it.max_ascent + it.max_descent); | |
4953 | adjust_glyphs (it.f); | |
4954 | } | |
5cdb3cf3 MB |
4955 | else if (noerror) |
4956 | return; | |
cf402f3f | 4957 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 4958 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 4959 | else |
ba96a5cf | 4960 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 4961 | } |
5500c422 | 4962 | else |
5cdb3cf3 MB |
4963 | { |
4964 | if (w->vscroll != 0) | |
4965 | /* The first line was only partially visible, make it fully | |
4966 | visible. */ | |
4967 | w->vscroll = 0; | |
4968 | else if (noerror) | |
4969 | return; | |
4970 | else | |
ba96a5cf | 4971 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
4972 | } |
4973 | ||
4974 | /* If control gets here, then we vscrolled. */ | |
4975 | ||
4976 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4977 | ||
4978 | /* Don't try to change the window start below. */ | |
4979 | vscrolled = 1; | |
5500c422 GM |
4980 | } |
4981 | ||
5cdb3cf3 MB |
4982 | if (! vscrolled) |
4983 | { | |
2452438f EZ |
4984 | EMACS_INT pos = IT_CHARPOS (it); |
4985 | EMACS_INT bytepos; | |
e68def1e AS |
4986 | |
4987 | /* If in the middle of a multi-glyph character move forward to | |
4988 | the next character. */ | |
4989 | if (in_display_vector_p (&it)) | |
4990 | { | |
4991 | ++pos; | |
4992 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4993 | } | |
4994 | ||
5cdb3cf3 | 4995 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4996 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4997 | w->buffer); |
dad67609 RS |
4998 | bytepos = XMARKER (w->start)->bytepos; |
4999 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5000 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5001 | w->update_mode_line = Qt; |
5002 | XSETFASTINT (w->last_modified, 0); | |
5003 | XSETFASTINT (w->last_overlay_modified, 0); | |
5004 | /* Set force_start so that redisplay_window will run the | |
5005 | window-scroll-functions. */ | |
5006 | w->force_start = Qt; | |
5007 | } | |
177c0ea7 | 5008 | |
dc297565 RS |
5009 | /* The rest of this function uses current_y in a nonstandard way, |
5010 | not including the height of the header line if any. */ | |
5500c422 | 5011 | it.current_y = it.vpos = 0; |
177c0ea7 | 5012 | |
940f53e5 RS |
5013 | /* Move PT out of scroll margins. |
5014 | This code wants current_y to be zero at the window start position | |
5015 | even if there is a header line. */ | |
5016 | this_scroll_margin = max (0, scroll_margin); | |
5017 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5018 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5019 | ||
5020 | if (n > 0) | |
5500c422 | 5021 | { |
940f53e5 RS |
5022 | /* We moved the window start towards ZV, so PT may be now |
5023 | in the scroll margin at the top. */ | |
5024 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5025 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5026 | && (NILP (Vscroll_preserve_screen_position) | |
5027 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5028 | /* We found PT at a legitimate height. Leave it alone. */ |
5029 | ; | |
66fe93d1 | 5030 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5031 | { |
fa3c3426 RS |
5032 | /* If we have a header line, take account of it. |
5033 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5034 | move_it_to (&it, -1, |
5035 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5036 | window_scroll_pixel_based_preserve_y |
5037 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5038 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5039 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5040 | } | |
5041 | else | |
5500c422 | 5042 | { |
5500c422 | 5043 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5044 | { |
5045 | int prev = it.current_y; | |
5046 | move_it_by_lines (&it, 1, 1); | |
5047 | if (prev == it.current_y) | |
5048 | break; | |
5049 | } | |
5500c422 GM |
5050 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5051 | } | |
940f53e5 RS |
5052 | } |
5053 | else if (n < 0) | |
5054 | { | |
2452438f | 5055 | EMACS_INT charpos, bytepos; |
aed328bf | 5056 | int partial_p; |
940f53e5 | 5057 | |
66fe93d1 LT |
5058 | /* Save our position, for the |
5059 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5060 | charpos = IT_CHARPOS (it); |
5061 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5062 | |
940f53e5 RS |
5063 | /* We moved the window start towards BEGV, so PT may be now |
5064 | in the scroll margin at the bottom. */ | |
5065 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5066 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5067 | - this_scroll_margin - 1), | |
5068 | -1, | |
940f53e5 RS |
5069 | MOVE_TO_POS | MOVE_TO_Y); |
5070 | ||
aed328bf KS |
5071 | /* Save our position, in case it's correct. */ |
5072 | charpos = IT_CHARPOS (it); | |
5073 | bytepos = IT_BYTEPOS (it); | |
5074 | ||
5075 | /* See if point is on a partially visible line at the end. */ | |
5076 | if (it.what == IT_EOB) | |
5077 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5078 | else | |
5079 | { | |
5080 | move_it_by_lines (&it, 1, 1); | |
5081 | partial_p = it.current_y > it.last_visible_y; | |
5082 | } | |
5083 | ||
bdf4ec93 RS |
5084 | if (charpos == PT && !partial_p |
5085 | && (NILP (Vscroll_preserve_screen_position) | |
5086 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5087 | /* We found PT before we found the display margin, so PT is ok. */ |
5088 | ; | |
66fe93d1 | 5089 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5090 | { |
5091 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5092 | start_display (&it, w, start); | |
c525d842 CY |
5093 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5094 | here because we called start_display again and did not | |
5095 | alter it.current_y this time. */ | |
c876b227 SM |
5096 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5097 | window_scroll_pixel_based_preserve_y, -1, | |
5098 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5099 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5100 | } | |
5101 | else | |
5102 | { | |
aed328bf | 5103 | if (partial_p) |
5cdb3cf3 MB |
5104 | /* The last line was only partially visible, so back up two |
5105 | lines to make sure we're on a fully visible line. */ | |
5106 | { | |
5107 | move_it_by_lines (&it, -2, 0); | |
5108 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5109 | } | |
5110 | else | |
5111 | /* No, the position we saved is OK, so use it. */ | |
5112 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5113 | } |
5114 | } | |
5115 | } | |
5116 | ||
5117 | ||
5118 | /* Implementation of window_scroll that works based on screen lines. | |
5119 | See the comment of window_scroll for parameter descriptions. */ | |
5120 | ||
5121 | static void | |
971de7fb | 5122 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
5123 | { |
5124 | register struct window *w = XWINDOW (window); | |
2452438f EZ |
5125 | register EMACS_INT opoint = PT, opoint_byte = PT_BYTE; |
5126 | register EMACS_INT pos, pos_byte; | |
7ab12479 JB |
5127 | register int ht = window_internal_height (w); |
5128 | register Lisp_Object tem; | |
5129 | int lose; | |
5500c422 | 5130 | Lisp_Object bolp; |
2452438f | 5131 | EMACS_INT startpos; |
c876b227 | 5132 | Lisp_Object original_pos = Qnil; |
101d1605 | 5133 | |
d4e7cf01 GM |
5134 | /* If scrolling screen-fulls, compute the number of lines to |
5135 | scroll from the window's height. */ | |
5136 | if (whole) | |
5137 | n *= max (1, ht - next_screen_context_lines); | |
5138 | ||
101d1605 RS |
5139 | startpos = marker_position (w->start); |
5140 | ||
c876b227 SM |
5141 | if (!NILP (Vscroll_preserve_screen_position)) |
5142 | { | |
5143 | if (window_scroll_preserve_vpos <= 0 | |
a4b000fb JL |
5144 | || !SYMBOLP (current_kboard->Vlast_command) |
5145 | || NILP (Fget (current_kboard->Vlast_command, Qscroll_command))) | |
c876b227 SM |
5146 | { |
5147 | struct position posit | |
5148 | = *compute_motion (startpos, 0, 0, 0, | |
5149 | PT, ht, 0, | |
5150 | -1, XINT (w->hscroll), | |
5151 | 0, w); | |
5152 | window_scroll_preserve_vpos = posit.vpos; | |
5153 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
5154 | } | |
5155 | ||
5156 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5157 | make_number (window_scroll_preserve_vpos)); | |
5158 | } | |
0a1f771a | 5159 | |
d834a2e9 | 5160 | XSETFASTINT (tem, PT); |
6ffdb539 | 5161 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5162 | |
265a9e55 | 5163 | if (NILP (tem)) |
7ab12479 | 5164 | { |
cd2be1dd | 5165 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5166 | startpos = PT; |
7ab12479 JB |
5167 | } |
5168 | ||
345d45b2 | 5169 | SET_PT (startpos); |
5ce7b543 | 5170 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5171 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5172 | pos = PT; |
b73ea88e | 5173 | pos_byte = PT_BYTE; |
7ab12479 | 5174 | bolp = Fbolp (); |
b73ea88e | 5175 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5176 | |
5177 | if (lose) | |
f8026fd8 JB |
5178 | { |
5179 | if (noerror) | |
5180 | return; | |
5181 | else | |
ba96a5cf | 5182 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5183 | } |
7ab12479 JB |
5184 | |
5185 | if (pos < ZV) | |
7ab12479 | 5186 | { |
0c7da84e RS |
5187 | int this_scroll_margin = scroll_margin; |
5188 | ||
5189 | /* Don't use a scroll margin that is negative or too large. */ | |
5190 | if (this_scroll_margin < 0) | |
5191 | this_scroll_margin = 0; | |
5192 | ||
949cf20f KS |
5193 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5194 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5195 | |
b73ea88e | 5196 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5197 | w->start_at_line_beg = bolp; |
5198 | w->update_mode_line = Qt; | |
d834a2e9 | 5199 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5200 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5201 | /* Set force_start so that redisplay_window will run |
5202 | the window-scroll-functions. */ | |
5203 | w->force_start = Qt; | |
0c7da84e | 5204 | |
bdf4ec93 RS |
5205 | if (!NILP (Vscroll_preserve_screen_position) |
5206 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5207 | { |
b73ea88e | 5208 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5209 | Fvertical_motion (original_pos, window); |
0c7da84e | 5210 | } |
101d1605 RS |
5211 | /* If we scrolled forward, put point enough lines down |
5212 | that it is outside the scroll margin. */ | |
5213 | else if (n > 0) | |
0c7da84e | 5214 | { |
101d1605 RS |
5215 | int top_margin; |
5216 | ||
5217 | if (this_scroll_margin > 0) | |
5218 | { | |
b73ea88e | 5219 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5220 | Fvertical_motion (make_number (this_scroll_margin), window); |
5221 | top_margin = PT; | |
5222 | } | |
5223 | else | |
5224 | top_margin = pos; | |
5225 | ||
5226 | if (top_margin <= opoint) | |
b73ea88e | 5227 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5228 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5229 | { |
b73ea88e | 5230 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5231 | Fvertical_motion (original_pos, window); |
101d1605 | 5232 | } |
9317a85d | 5233 | else |
335406fc | 5234 | SET_PT (top_margin); |
0c7da84e | 5235 | } |
101d1605 | 5236 | else if (n < 0) |
7ab12479 | 5237 | { |
101d1605 RS |
5238 | int bottom_margin; |
5239 | ||
0c7da84e RS |
5240 | /* If we scrolled backward, put point near the end of the window |
5241 | but not within the scroll margin. */ | |
b73ea88e | 5242 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5243 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5244 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5245 | bottom_margin = PT; | |
5246 | else | |
5247 | bottom_margin = PT + 1; | |
5248 | ||
5249 | if (bottom_margin > opoint) | |
b73ea88e | 5250 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5251 | else |
101d1605 | 5252 | { |
5500c422 | 5253 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5254 | { |
b73ea88e | 5255 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5256 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5257 | } |
5258 | else | |
5259 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5260 | } |
7ab12479 JB |
5261 | } |
5262 | } | |
5263 | else | |
f8026fd8 JB |
5264 | { |
5265 | if (noerror) | |
5266 | return; | |
5267 | else | |
ba96a5cf | 5268 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5269 | } |
7ab12479 | 5270 | } |
5500c422 GM |
5271 | |
5272 | ||
5273 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5274 | screen-full which is defined as the height of the window minus | |
5275 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5276 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5277 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5278 | |
5279 | static void | |
971de7fb | 5280 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 5281 | { |
331379bf | 5282 | int count = SPECPDL_INDEX (); |
7ab12479 | 5283 | |
1ea40aa2 | 5284 | xassert (eabs (direction) == 1); |
5500c422 GM |
5285 | |
5286 | /* If selected window's buffer isn't current, make it current for | |
5287 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5288 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5289 | { |
5290 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5291 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5292 | |
5293 | /* Make redisplay consider other windows than just selected_window. */ | |
5294 | ++windows_or_buffers_changed; | |
95605e15 | 5295 | } |
7ab12479 | 5296 | |
265a9e55 | 5297 | if (NILP (n)) |
d4e7cf01 | 5298 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5299 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5300 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5301 | else |
5302 | { | |
5303 | n = Fprefix_numeric_value (n); | |
101d1605 | 5304 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5305 | } |
95605e15 JB |
5306 | |
5307 | unbind_to (count, Qnil); | |
7ab12479 JB |
5308 | } |
5309 | ||
e0965597 | 5310 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5311 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5312 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5313 | A near full screen is `next-screen-context-lines' less than a full screen. |
5314 | Negative ARG means scroll downward. | |
5315 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5316 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5317 | (Lisp_Object arg) |
7ab12479 | 5318 | { |
413430c5 | 5319 | scroll_command (arg, 1); |
7ab12479 JB |
5320 | return Qnil; |
5321 | } | |
5322 | ||
e0965597 | 5323 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5324 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5325 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5326 | A near full screen is `next-screen-context-lines' less than a full screen. |
5327 | Negative ARG means scroll upward. | |
5328 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5329 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5330 | (Lisp_Object arg) |
7ab12479 | 5331 | { |
413430c5 | 5332 | scroll_command (arg, -1); |
7ab12479 JB |
5333 | return Qnil; |
5334 | } | |
ccd0664b RS |
5335 | \f |
5336 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5337 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5338 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5339 | showing that buffer is used. |
5340 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5341 | specifies the window. This takes precedence over | |
5342 | `other-window-scroll-buffer'. */) | |
5842a27b | 5343 | (void) |
7ab12479 | 5344 | { |
ccd0664b | 5345 | Lisp_Object window; |
7ab12479 JB |
5346 | |
5347 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5348 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5349 | window = Vminibuf_scroll_window; |
5350 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5351 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5352 | { |
5353 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5354 | if (NILP (window)) |
87478b52 | 5355 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5356 | } |
5357 | else | |
dbc4e1c1 JB |
5358 | { |
5359 | /* Nothing specified; look for a neighboring window on the same | |
5360 | frame. */ | |
5361 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5362 | ||
5363 | if (EQ (window, selected_window)) | |
5364 | /* That didn't get us anywhere; look for a window on another | |
5365 | visible frame. */ | |
5366 | do | |
5367 | window = Fnext_window (window, Qnil, Qt); | |
5368 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5369 | && ! EQ (window, selected_window)); | |
5370 | } | |
5371 | ||
b7826503 | 5372 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5373 | |
5374 | if (EQ (window, selected_window)) | |
5375 | error ("There is no other window"); | |
5376 | ||
ccd0664b RS |
5377 | return window; |
5378 | } | |
5379 | ||
5380 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5381 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5382 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5383 | The next window is the one below the current one; or the one at the top | |
5384 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5385 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5386 | When calling from a program, supply as argument a number, nil, or `-'. | |
5387 | ||
fdb82f93 | 5388 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5389 | showing that buffer, popping the buffer up if necessary. |
5390 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5391 | specifies the window to scroll. This takes precedence over | |
5392 | `other-window-scroll-buffer'. */) | |
5842a27b | 5393 | (Lisp_Object arg) |
ccd0664b | 5394 | { |
d4e7cf01 GM |
5395 | Lisp_Object window; |
5396 | struct window *w; | |
331379bf | 5397 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5398 | |
5399 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5400 | w = XWINDOW (window); |
7ab12479 JB |
5401 | |
5402 | /* Don't screw up if window_scroll gets an error. */ | |
5403 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5404 | ++windows_or_buffers_changed; |
7ab12479 JB |
5405 | |
5406 | Fset_buffer (w->buffer); | |
5407 | SET_PT (marker_position (w->pointm)); | |
5408 | ||
413430c5 | 5409 | if (NILP (arg)) |
d4e7cf01 | 5410 | window_scroll (window, 1, 1, 1); |
413430c5 | 5411 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5412 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5413 | else |
5414 | { | |
413430c5 EN |
5415 | if (CONSP (arg)) |
5416 | arg = Fcar (arg); | |
b7826503 | 5417 | CHECK_NUMBER (arg); |
101d1605 | 5418 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5419 | } |
5420 | ||
b73ea88e | 5421 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5422 | unbind_to (count, Qnil); |
7ab12479 JB |
5423 | |
5424 | return Qnil; | |
5425 | } | |
5426 | \f | |
e0965597 | 5427 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5428 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5429 | Default for ARG is window width minus 2. |
5430 | Value is the total amount of leftward horizontal scrolling in | |
5431 | effect after the change. | |
23fe745a | 5432 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5433 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5434 | will not scroll a window to a column less than the value returned |
dc297565 | 5435 | by this function. This happens in an interactive call. */) |
5842a27b | 5436 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5437 | { |
c67fa410 GM |
5438 | Lisp_Object result; |
5439 | int hscroll; | |
5440 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5441 | |
265a9e55 | 5442 | if (NILP (arg)) |
949cf20f | 5443 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5444 | else |
5445 | arg = Fprefix_numeric_value (arg); | |
5446 | ||
c67fa410 GM |
5447 | hscroll = XINT (w->hscroll) + XINT (arg); |
5448 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5449 | ||
dc297565 | 5450 | if (!NILP (set_minimum)) |
c67fa410 GM |
5451 | w->min_hscroll = w->hscroll; |
5452 | ||
5453 | return result; | |
7ab12479 JB |
5454 | } |
5455 | ||
e0965597 | 5456 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5457 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5458 | Default for ARG is window width minus 2. |
5459 | Value is the total amount of leftward horizontal scrolling in | |
5460 | effect after the change. | |
23fe745a | 5461 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5462 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5463 | will not scroll a window to a column less than the value returned |
dc297565 | 5464 | by this function. This happens in an interactive call. */) |
5842a27b | 5465 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5466 | { |
c67fa410 GM |
5467 | Lisp_Object result; |
5468 | int hscroll; | |
5469 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5470 | |
265a9e55 | 5471 | if (NILP (arg)) |
949cf20f | 5472 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5473 | else |
5474 | arg = Fprefix_numeric_value (arg); | |
5475 | ||
c67fa410 GM |
5476 | hscroll = XINT (w->hscroll) - XINT (arg); |
5477 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5478 | |
dc297565 | 5479 | if (!NILP (set_minimum)) |
c67fa410 GM |
5480 | w->min_hscroll = w->hscroll; |
5481 | ||
5482 | return result; | |
7ab12479 JB |
5483 | } |
5484 | ||
fa832261 KS |
5485 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5486 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5487 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5488 | (void) |
fa832261 KS |
5489 | { |
5490 | if (minibuf_level > 0 | |
5491 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5492 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5493 | return minibuf_selected_window; | |
5494 | ||
5495 | return Qnil; | |
5496 | } | |
5497 | ||
12c8b416 GM |
5498 | /* Value is the number of lines actually displayed in window W, |
5499 | as opposed to its height. */ | |
5500 | ||
5501 | static int | |
971de7fb | 5502 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5503 | { |
5504 | struct it it; | |
5505 | struct text_pos start; | |
5506 | int height = window_box_height (w); | |
5507 | struct buffer *old_buffer; | |
5508 | int bottom_y; | |
5509 | ||
5510 | if (XBUFFER (w->buffer) != current_buffer) | |
5511 | { | |
5512 | old_buffer = current_buffer; | |
5513 | set_buffer_internal (XBUFFER (w->buffer)); | |
5514 | } | |
5515 | else | |
5516 | old_buffer = NULL; | |
5517 | ||
521b203e GM |
5518 | /* In case W->start is out of the accessible range, do something |
5519 | reasonable. This happens in Info mode when Info-scroll-down | |
5520 | calls (recenter -1) while W->start is 1. */ | |
5521 | if (XMARKER (w->start)->charpos < BEGV) | |
5522 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5523 | else if (XMARKER (w->start)->charpos > ZV) | |
5524 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5525 | else | |
5526 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5527 | ||
12c8b416 GM |
5528 | start_display (&it, w, start); |
5529 | move_it_vertically (&it, height); | |
c8bc6f65 | 5530 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5531 | |
1de65f51 RS |
5532 | /* rms: On a non-window display, |
5533 | the value of it.vpos at the bottom of the screen | |
5534 | seems to be 1 larger than window_box_height (w). | |
5535 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5536 | when ZV is on the last screen line | |
5537 | moves to the previous screen line instead of the last one. */ | |
5538 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5539 | height++; | |
5540 | ||
12c8b416 GM |
5541 | /* Add in empty lines at the bottom of the window. */ |
5542 | if (bottom_y < height) | |
5543 | { | |
949cf20f | 5544 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5545 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5546 | } |
5547 | ||
c8bc6f65 GM |
5548 | if (old_buffer) |
5549 | set_buffer_internal (old_buffer); | |
5550 | ||
12c8b416 GM |
5551 | return it.vpos; |
5552 | } | |
5553 | ||
5554 | ||
7ab12479 | 5555 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5556 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5557 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5558 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5559 | bottom of the window. (ARG should be less than the height of the window.) |
5560 | ||
666e158e MB |
5561 | If ARG is omitted or nil, then recenter with point on the middle line of |
5562 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5563 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5564 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5565 | height needed); if `recenter-redisplay' has the special value `tty', | |
5566 | then only tty frame are redrawn. | |
7d1d98ee | 5567 | |
fdb82f93 PJ |
5568 | Just C-u as prefix means put point in the center of the window |
5569 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5570 | (register Lisp_Object arg) |
7ab12479 | 5571 | { |
6df47b59 | 5572 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5573 | struct buffer *buf = XBUFFER (w->buffer); |
5574 | struct buffer *obuf = current_buffer; | |
6df47b59 | 5575 | int center_p = 0; |
2452438f | 5576 | EMACS_INT charpos, bytepos; |
f6b43440 RS |
5577 | int iarg; |
5578 | int this_scroll_margin; | |
7ab12479 | 5579 | |
0fa5d25b RS |
5580 | /* If redisplay is suppressed due to an error, try again. */ |
5581 | obuf->display_error_modiff = 0; | |
5582 | ||
413430c5 | 5583 | if (NILP (arg)) |
7ab12479 | 5584 | { |
666e158e MB |
5585 | if (!NILP (Vrecenter_redisplay) |
5586 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5587 | || !NILP (Ftty_type (selected_frame)))) | |
5588 | { | |
5589 | int i; | |
f02d6d5c | 5590 | |
666e158e MB |
5591 | /* Invalidate pixel data calculated for all compositions. */ |
5592 | for (i = 0; i < n_compositions; i++) | |
5593 | composition_table[i]->font = NULL; | |
7ab12479 | 5594 | |
666e158e MB |
5595 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5596 | ||
5597 | Fredraw_frame (WINDOW_FRAME (w)); | |
5598 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5599 | } | |
7d1d98ee | 5600 | |
6df47b59 | 5601 | center_p = 1; |
7ab12479 | 5602 | } |
413430c5 | 5603 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5604 | center_p = 1; |
7ab12479 JB |
5605 | else |
5606 | { | |
413430c5 | 5607 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5608 | CHECK_NUMBER (arg); |
ae12ecd7 | 5609 | iarg = XINT (arg); |
7ab12479 JB |
5610 | } |
5611 | ||
478292ed | 5612 | set_buffer_internal (buf); |
7ab12479 | 5613 | |
f6b43440 RS |
5614 | /* Do this after making BUF current |
5615 | in case scroll_margin is buffer-local. */ | |
5616 | this_scroll_margin = max (0, scroll_margin); | |
5617 | this_scroll_margin = min (this_scroll_margin, | |
5618 | XFASTINT (w->total_lines) / 4); | |
5619 | ||
521b203e | 5620 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5621 | have variable-height lines and centering point on the basis of |
5622 | line counts would lead to strange effects. */ | |
521b203e | 5623 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5624 | { |
6df47b59 GM |
5625 | if (center_p) |
5626 | { | |
521b203e GM |
5627 | struct it it; |
5628 | struct text_pos pt; | |
177c0ea7 | 5629 | |
521b203e GM |
5630 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5631 | start_display (&it, w, pt); | |
f204989e | 5632 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5633 | charpos = IT_CHARPOS (it); |
5634 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5635 | } |
f6b43440 | 5636 | else if (iarg < 0) |
6df47b59 | 5637 | { |
521b203e GM |
5638 | struct it it; |
5639 | struct text_pos pt; | |
f6b43440 | 5640 | int nlines = -iarg; |
f204989e KS |
5641 | int extra_line_spacing; |
5642 | int h = window_box_height (w); | |
177c0ea7 | 5643 | |
f6b43440 RS |
5644 | iarg = - max (-iarg, this_scroll_margin); |
5645 | ||
521b203e GM |
5646 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5647 | start_display (&it, w, pt); | |
f204989e KS |
5648 | |
5649 | /* Be sure we have the exact height of the full line containing PT. */ | |
5650 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5651 | |
d466fa4d | 5652 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5653 | height minus what's displayed in the line containing PT, |
5654 | and the lines below. */ | |
f204989e KS |
5655 | it.current_y = 0; |
5656 | it.vpos = 0; | |
d466fa4d GM |
5657 | move_it_by_lines (&it, nlines, 1); |
5658 | ||
f204989e KS |
5659 | if (it.vpos == nlines) |
5660 | h -= it.current_y; | |
5661 | else | |
5662 | { | |
5663 | /* Last line has no newline */ | |
5664 | h -= line_bottom_y (&it); | |
5665 | it.vpos++; | |
5666 | } | |
5667 | ||
5668 | /* Don't reserve space for extra line spacing of last line. */ | |
5669 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5670 | |
5671 | /* If we can't move down NLINES lines because we hit | |
5672 | the end of the buffer, count in some empty lines. */ | |
5673 | if (it.vpos < nlines) | |
f204989e KS |
5674 | { |
5675 | nlines -= it.vpos; | |
5676 | extra_line_spacing = it.extra_line_spacing; | |
5677 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5678 | } | |
5679 | if (h <= 0) | |
5680 | return Qnil; | |
201c831a | 5681 | |
f204989e | 5682 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5683 | start_display (&it, w, pt); |
f204989e KS |
5684 | it.current_y = 0; |
5685 | move_it_vertically_backward (&it, h); | |
5686 | ||
5687 | /* If extra line spacing is present, we may move too far | |
5688 | back. This causes the last line to be only partially | |
5689 | visible (which triggers redisplay to recenter that line | |
5690 | in the middle), so move forward. | |
5691 | But ignore extra line spacing on last line, as it is not | |
5692 | considered to be part of the visible height of the line. | |
5693 | */ | |
5694 | h += extra_line_spacing; | |
5695 | while (-it.current_y > h) | |
5696 | move_it_by_lines (&it, 1, 1); | |
5697 | ||
521b203e GM |
5698 | charpos = IT_CHARPOS (it); |
5699 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5700 | } |
521b203e GM |
5701 | else |
5702 | { | |
5703 | struct position pos; | |
f6b43440 | 5704 | |
f6b43440 RS |
5705 | iarg = max (iarg, this_scroll_margin); |
5706 | ||
5707 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5708 | charpos = pos.bufpos; |
5709 | bytepos = pos.bytepos; | |
5710 | } | |
5711 | } | |
5712 | else | |
5713 | { | |
5714 | struct position pos; | |
5715 | int ht = window_internal_height (w); | |
5716 | ||
5717 | if (center_p) | |
a4429c5b | 5718 | iarg = ht / 2; |
f567c488 KS |
5719 | else if (iarg < 0) |
5720 | iarg += ht; | |
f6b43440 RS |
5721 | |
5722 | /* Don't let it get into the margin at either top or bottom. */ | |
5723 | iarg = max (iarg, this_scroll_margin); | |
5724 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5725 | |
f6b43440 | 5726 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5727 | charpos = pos.bufpos; |
5728 | bytepos = pos.bytepos; | |
5729 | } | |
5730 | ||
5731 | /* Set the new window start. */ | |
5732 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5733 | w->window_end_valid = Qnil; |
177c0ea7 | 5734 | |
95605b1b RS |
5735 | w->optional_new_start = Qt; |
5736 | ||
6df47b59 GM |
5737 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5738 | w->start_at_line_beg = Qt; | |
5739 | else | |
5740 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5741 | |
478292ed | 5742 | set_buffer_internal (obuf); |
7ab12479 JB |
5743 | return Qnil; |
5744 | } | |
b7617575 GM |
5745 | |
5746 | ||
81fe0836 | 5747 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5748 | 0, 1, 0, |
5749 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5750 | WINDOW defaults to the selected window. |
8fef9de1 | 5751 | |
f039b2d2 CY |
5752 | The return value does not include the mode line, any header line, nor |
5753 | any partial-height lines in the text display area. */) | |
5842a27b | 5754 | (Lisp_Object window) |
81fe0836 MB |
5755 | { |
5756 | struct window *w = decode_window (window); | |
5757 | int pixel_height = window_box_height (w); | |
949cf20f | 5758 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5759 | return make_number (line_height); |
5760 | } | |
5761 | ||
5762 | ||
7ab12479 JB |
5763 | \f |
5764 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5765 | 1, 1, "P", |
5766 | doc: /* Position point relative to window. | |
5767 | With no argument, position point at center of window. | |
5768 | An argument specifies vertical position within the window; | |
5769 | zero means top of window, negative means relative to bottom of window. */) | |
5842a27b | 5770 | (Lisp_Object arg) |
7ab12479 | 5771 | { |
b7617575 GM |
5772 | struct window *w = XWINDOW (selected_window); |
5773 | int lines, start; | |
540b6aa0 | 5774 | Lisp_Object window; |
f6b43440 RS |
5775 | #if 0 |
5776 | int this_scroll_margin; | |
5777 | #endif | |
7ab12479 | 5778 | |
b7617575 | 5779 | window = selected_window; |
7ab12479 JB |
5780 | start = marker_position (w->start); |
5781 | if (start < BEGV || start > ZV) | |
5782 | { | |
b7617575 | 5783 | int height = window_internal_height (w); |
cd2be1dd | 5784 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5785 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5786 | w->start_at_line_beg = Fbolp (); |
5787 | w->force_start = Qt; | |
5788 | } | |
5789 | else | |
b73ea88e | 5790 | Fgoto_char (w->start); |
7ab12479 | 5791 | |
b7617575 | 5792 | lines = displayed_window_lines (w); |
f6b43440 RS |
5793 | |
5794 | #if 0 | |
5795 | this_scroll_margin = max (0, scroll_margin); | |
5796 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5797 | #endif | |
5798 | ||
b7617575 GM |
5799 | if (NILP (arg)) |
5800 | XSETFASTINT (arg, lines / 2); | |
5801 | else | |
5802 | { | |
f6b43440 RS |
5803 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5804 | ||
5805 | if (iarg < 0) | |
5806 | iarg = iarg + lines; | |
5807 | ||
5808 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5809 | to a place inside the scroll margins (which would cause the | |
5810 | next redisplay to scroll). I wrote this code, but then concluded | |
5811 | it is probably better not to install it. However, it is here | |
5812 | inside #if 0 so as not to lose it. -- rms. */ | |
5813 | ||
5814 | /* Don't let it get into the margin at either top or bottom. */ | |
5815 | iarg = max (iarg, this_scroll_margin); | |
5816 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5817 | #endif | |
5818 | ||
5819 | arg = make_number (iarg); | |
b7617575 GM |
5820 | } |
5821 | ||
c8bc6f65 | 5822 | /* Skip past a partially visible first line. */ |
163784df | 5823 | if (w->vscroll) |
163784df MB |
5824 | XSETINT (arg, XINT (arg) + 1); |
5825 | ||
540b6aa0 | 5826 | return Fvertical_motion (arg, window); |
7ab12479 | 5827 | } |
5500c422 GM |
5828 | |
5829 | ||
7ab12479 | 5830 | \f |
5500c422 GM |
5831 | /*********************************************************************** |
5832 | Window Configuration | |
5833 | ***********************************************************************/ | |
5834 | ||
7ab12479 JB |
5835 | struct save_window_data |
5836 | { | |
d0fdb6da | 5837 | EMACS_UINT size; |
7ab12479 | 5838 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 5839 | Lisp_Object selected_frame; |
7ab12479 JB |
5840 | Lisp_Object current_window; |
5841 | Lisp_Object current_buffer; | |
5842 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5843 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5844 | Lisp_Object root_window; |
bdc727bf | 5845 | Lisp_Object focus_frame; |
cbff28e8 RS |
5846 | /* A vector, each of whose elements is a struct saved_window |
5847 | for one window. */ | |
7ab12479 | 5848 | Lisp_Object saved_windows; |
b05b4e27 SM |
5849 | |
5850 | /* All fields above are traced by the GC. | |
5851 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5852 | ||
5853 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5854 | int frame_tool_bar_lines; | |
7ab12479 | 5855 | }; |
ff06df24 | 5856 | |
cbff28e8 | 5857 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5858 | struct saved_window |
ea68264b GM |
5859 | { |
5860 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 5861 | EMACS_UINT size; |
ea68264b | 5862 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 5863 | |
ea68264b GM |
5864 | Lisp_Object window; |
5865 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
5866 | Lisp_Object left_col, top_line, total_cols, total_lines; |
5867 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
5868 | Lisp_Object parent, prev; |
5869 | Lisp_Object start_at_line_beg; | |
5870 | Lisp_Object display_table; | |
949cf20f KS |
5871 | Lisp_Object orig_top_line, orig_total_lines; |
5872 | Lisp_Object left_margin_cols, right_margin_cols; | |
5873 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
5874 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 5875 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
5876 | }; |
5877 | ||
7ab12479 JB |
5878 | #define SAVED_WINDOW_N(swv,n) \ |
5879 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5880 | ||
5881 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5882 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5883 | (Lisp_Object object) |
7ab12479 | 5884 | { |
6ad0381c | 5885 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5886 | } |
5887 | ||
3f8ab7bd | 5888 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5889 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5890 | (Lisp_Object config) |
3f8ab7bd RS |
5891 | { |
5892 | register struct save_window_data *data; | |
5893 | struct Lisp_Vector *saved_windows; | |
5894 | ||
663fbbba | 5895 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5896 | |
5897 | data = (struct save_window_data *) XVECTOR (config); | |
5898 | saved_windows = XVECTOR (data->saved_windows); | |
5899 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5900 | } | |
5901 | ||
d5b2799e | 5902 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5903 | Sset_window_configuration, 1, 1, 0, |
5904 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5905 | CONFIGURATION must be a value previously returned | |
5906 | by `current-window-configuration' (which see). | |
5907 | If CONFIGURATION was made from a frame that is now deleted, | |
5908 | only frame-independent values can be restored. In this case, | |
5909 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5910 | (Lisp_Object configuration) |
7ab12479 | 5911 | { |
7ab12479 JB |
5912 | register struct save_window_data *data; |
5913 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5914 | Lisp_Object new_current_buffer; |
fd482be5 | 5915 | Lisp_Object frame; |
44fa5b1e | 5916 | FRAME_PTR f; |
2452438f | 5917 | EMACS_INT old_point = -1; |
7ab12479 | 5918 | |
663fbbba | 5919 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5920 | |
2f83aebe | 5921 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5922 | saved_windows = XVECTOR (data->saved_windows); |
5923 | ||
7ab12479 | 5924 | new_current_buffer = data->current_buffer; |
265a9e55 | 5925 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 5926 | new_current_buffer = Qnil; |
72695e47 | 5927 | else |
73cadfc1 DK |
5928 | { |
5929 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5930 | /* The code further down "preserves point" by saving here PT in |
5931 | old_point and then setting it later back into PT. When the | |
5932 | current-selected-window and the final-selected-window both show | |
5933 | the current buffer, this suffers from the problem that the | |
5934 | current PT is the window-point of the current-selected-window, | |
5935 | while the final PT is the point of the final-selected-window, so | |
5936 | this copy from one PT to the other would end up moving the | |
5937 | window-point of the final-selected-window to the window-point of | |
5938 | the current-selected-window. So we have to be careful which | |
5939 | point of the current-buffer we copy into old_point. */ | |
5940 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5941 | && WINDOWP (selected_window) | |
5942 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5943 | && !EQ (selected_window, data->current_window)) | |
5944 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5945 | else | |
5946 | old_point = PT; | |
73cadfc1 | 5947 | else |
203eb0aa SM |
5948 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5949 | point in new_current_buffer as of the last time this buffer was | |
5950 | used. This can be non-deterministic since it can be changed by | |
5951 | things like jit-lock by mere temporary selection of some random | |
5952 | window that happens to show this buffer. | |
5953 | So if possible we want this arbitrary choice of "which point" to | |
5954 | be the one from the to-be-selected-window so as to prevent this | |
5955 | window's cursor from being copied from another window. */ | |
5956 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5957 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5958 | && !EQ (selected_window, data->current_window)) | |
5959 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5960 | else | |
5961 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5962 | } |
7ab12479 | 5963 | |
fd482be5 JB |
5964 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5965 | f = XFRAME (frame); | |
177c0ea7 | 5966 | |
fd482be5 JB |
5967 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5968 | However, there is other stuff we should still try to do below. */ | |
5969 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5970 | { |
fd482be5 JB |
5971 | register struct window *w; |
5972 | register struct saved_window *p; | |
5500c422 GM |
5973 | struct window *root_window; |
5974 | struct window **leaf_windows; | |
5975 | int n_leaf_windows; | |
c4280705 | 5976 | int k, i, n; |
fd482be5 JB |
5977 | |
5978 | /* If the frame has been resized since this window configuration was | |
5979 | made, we change the frame to the size specified in the | |
5980 | configuration, restore the configuration, and then resize it | |
5981 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5982 | int previous_frame_lines = FRAME_LINES (f); |
5983 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5984 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5985 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5986 | |
d2b35234 RS |
5987 | /* The mouse highlighting code could get screwed up |
5988 | if it runs during this. */ | |
5989 | BLOCK_INPUT; | |
5990 | ||
b05b4e27 SM |
5991 | if (data->frame_lines != previous_frame_lines |
5992 | || data->frame_cols != previous_frame_cols) | |
5993 | change_frame_size (f, data->frame_lines, | |
5994 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5995 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5996 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5997 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5998 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5999 | make_number (0)); | |
4314246f | 6000 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6001 | if (data->frame_tool_bar_lines |
9ea173e8 | 6002 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6003 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6004 | make_number (0)); | |
4314246f | 6005 | #endif |
217f2871 | 6006 | #endif |
fd482be5 | 6007 | |
a46c0153 RS |
6008 | /* "Swap out" point from the selected window's buffer |
6009 | into the window itself. (Normally the pointm of the selected | |
6010 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6011 | restoring the window contents, and prevent it from |
6012 | being done later on when we select a new window. */ | |
596ae0cf RS |
6013 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6014 | { | |
6015 | w = XWINDOW (selected_window); | |
6016 | set_marker_both (w->pointm, | |
6017 | w->buffer, | |
6018 | BUF_PT (XBUFFER (w->buffer)), | |
6019 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6020 | } | |
6021 | ||
fd482be5 | 6022 | windows_or_buffers_changed++; |
29aeee73 | 6023 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6024 | |
5500c422 | 6025 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6026 | is a serious redisplay flickering problem. What we would |
5500c422 | 6027 | really like to do is to free only those matrices not reused |
9d14503e | 6028 | below. */ |
5500c422 GM |
6029 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
6030 | leaf_windows | |
6031 | = (struct window **) alloca (count_windows (root_window) | |
6032 | * sizeof (struct window *)); | |
6033 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6034 | ||
fd482be5 JB |
6035 | /* Kludge Alert! |
6036 | Mark all windows now on frame as "deleted". | |
6037 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6038 | |
fd482be5 JB |
6039 | Save their current buffers in their height fields, since we may |
6040 | need it later, if a buffer saved in the configuration is now | |
6041 | dead. */ | |
6042 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6043 | ||
6044 | for (k = 0; k < saved_windows->size; k++) | |
6045 | { | |
6046 | p = SAVED_WINDOW_N (saved_windows, k); | |
6047 | w = XWINDOW (p->window); | |
6048 | w->next = Qnil; | |
7ab12479 | 6049 | |
fd482be5 JB |
6050 | if (!NILP (p->parent)) |
6051 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6052 | XFASTINT (p->parent))->window; | |
6053 | else | |
6054 | w->parent = Qnil; | |
7ab12479 | 6055 | |
fd482be5 | 6056 | if (!NILP (p->prev)) |
7ab12479 | 6057 | { |
fd482be5 JB |
6058 | w->prev = SAVED_WINDOW_N (saved_windows, |
6059 | XFASTINT (p->prev))->window; | |
6060 | XWINDOW (w->prev)->next = p->window; | |
6061 | } | |
6062 | else | |
6063 | { | |
6064 | w->prev = Qnil; | |
6065 | if (!NILP (w->parent)) | |
6066 | { | |
949cf20f | 6067 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6068 | { |
6069 | XWINDOW (w->parent)->vchild = p->window; | |
6070 | XWINDOW (w->parent)->hchild = Qnil; | |
6071 | } | |
6072 | else | |
6073 | { | |
6074 | XWINDOW (w->parent)->hchild = p->window; | |
6075 | XWINDOW (w->parent)->vchild = Qnil; | |
6076 | } | |
6077 | } | |
6078 | } | |
6079 | ||
6080 | /* If we squirreled away the buffer in the window's height, | |
6081 | restore it now. */ | |
949cf20f KS |
6082 | if (BUFFERP (w->total_lines)) |
6083 | w->buffer = w->total_lines; | |
6084 | w->left_col = p->left_col; | |
6085 | w->top_line = p->top_line; | |
6086 | w->total_cols = p->total_cols; | |
6087 | w->total_lines = p->total_lines; | |
fd482be5 | 6088 | w->hscroll = p->hscroll; |
ea68264b | 6089 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6090 | w->display_table = p->display_table; |
949cf20f KS |
6091 | w->orig_top_line = p->orig_top_line; |
6092 | w->orig_total_lines = p->orig_total_lines; | |
6093 | w->left_margin_cols = p->left_margin_cols; | |
6094 | w->right_margin_cols = p->right_margin_cols; | |
6095 | w->left_fringe_width = p->left_fringe_width; | |
6096 | w->right_fringe_width = p->right_fringe_width; | |
6097 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6098 | w->scroll_bar_width = p->scroll_bar_width; | |
6099 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6100 | w->dedicated = p->dedicated; |
047aaeb9 | 6101 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6102 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6103 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6104 | |
6105 | /* Reinstall the saved buffer and pointers into it. */ | |
6106 | if (NILP (p->buffer)) | |
6107 | w->buffer = p->buffer; | |
6108 | else | |
6109 | { | |
6110 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6111 | /* If saved buffer is alive, install it. */ | |
6112 | { | |
6113 | w->buffer = p->buffer; | |
6114 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6115 | set_marker_restricted (w->start, p->start, w->buffer); |
6116 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6117 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6118 | p->mark, w->buffer); |
fd482be5 JB |
6119 | |
6120 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6121 | restore the location of point in the buffer which was |
6122 | current when the window configuration was recorded. */ | |
6b54027b RS |
6123 | if (!EQ (p->buffer, new_current_buffer) |
6124 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6125 | Fgoto_char (w->pointm); |
6126 | } | |
52a68e98 RS |
6127 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6128 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6129 | { |
fd482be5 JB |
6130 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6131 | /* This will set the markers to beginning of visible | |
6132 | range. */ | |
6133 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6134 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6135 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6136 | } |
6137 | else | |
fd482be5 | 6138 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6139 | are real. */ |
7ab12479 | 6140 | { |
fd482be5 JB |
6141 | /* Set window markers at start of visible range. */ |
6142 | if (XMARKER (w->start)->buffer == 0) | |
6143 | set_marker_restricted (w->start, make_number (0), | |
6144 | w->buffer); | |
6145 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6146 | set_marker_restricted_both (w->pointm, w->buffer, |
6147 | BUF_PT (XBUFFER (w->buffer)), | |
6148 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6149 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6150 | } |
6151 | } | |
6152 | } | |
9ace597f | 6153 | |
fd482be5 | 6154 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6155 | /* Prevent "swapping out point" in the old selected window |
6156 | using the buffer that has been restored into it. | |
a46c0153 | 6157 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6158 | selected_window = Qnil; |
a46c0153 RS |
6159 | |
6160 | /* Arrange *not* to restore point in the buffer that was | |
6161 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6162 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6163 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6164 | make_number (old_point), |
243a5ce6 | 6165 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6166 | |
14d87dc9 | 6167 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6168 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6169 | = selected_window; | |
7ab12479 | 6170 | |
db269683 | 6171 | if (NILP (data->focus_frame) |
017b2bad | 6172 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6173 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6174 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6175 | |
fd482be5 JB |
6176 | #if 0 /* I don't understand why this is needed, and it causes problems |
6177 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6178 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6179 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
c6932ecd | 6180 | 0, 0, Qnil); |
fd482be5 JB |
6181 | #endif |
6182 | ||
6183 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6184 | if (previous_frame_lines != FRAME_LINES (f) |
6185 | || previous_frame_cols != FRAME_COLS (f)) | |
6186 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6187 | 0, 0, 0); |
e3678b64 | 6188 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6189 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6190 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6191 | make_number (0)); | |
4314246f | 6192 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6193 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6194 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6195 | make_number (0)); | |
4314246f | 6196 | #endif |
217f2871 | 6197 | #endif |
d2b35234 | 6198 | |
5500c422 | 6199 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6200 | for (i = n = 0; i < n_leaf_windows; ++i) |
6201 | { | |
6202 | if (NILP (leaf_windows[i]->buffer)) | |
6203 | { | |
6204 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6205 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6206 | && NILP (leaf_windows[i]->vchild)); |
6207 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6208 | } |
6209 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6210 | ++n; | |
6211 | } | |
177c0ea7 | 6212 | |
5500c422 GM |
6213 | adjust_glyphs (f); |
6214 | ||
d2b35234 | 6215 | UNBLOCK_INPUT; |
756b6edc | 6216 | |
478292ed RS |
6217 | /* Fselect_window will have made f the selected frame, so we |
6218 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6219 | selected window too, but that doesn't make the call to | |
6220 | Fselect_window above totally superfluous; it still sets f's | |
6221 | selected window. */ | |
6222 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6223 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6224 | |
eeca6f6f | 6225 | run_window_configuration_change_hook (f); |
478292ed | 6226 | } |
bdc727bf JB |
6227 | |
6228 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6229 | Fset_buffer (new_current_buffer); |
bdc727bf | 6230 | |
478292ed | 6231 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6232 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6233 | |
3f8ab7bd | 6234 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6235 | } |
6236 | ||
44fa5b1e | 6237 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6238 | by setting their buffers to nil. */ |
6239 | ||
fd482be5 | 6240 | void |
971de7fb | 6241 | delete_all_subwindows (register struct window *w) |
7ab12479 | 6242 | { |
265a9e55 | 6243 | if (!NILP (w->next)) |
7ab12479 | 6244 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6245 | if (!NILP (w->vchild)) |
7ab12479 | 6246 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6247 | if (!NILP (w->hchild)) |
7ab12479 | 6248 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6249 | |
949cf20f | 6250 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6251 | |
86e48436 RS |
6252 | if (!NILP (w->buffer)) |
6253 | unshow_buffer (w); | |
6254 | ||
605be8af JB |
6255 | /* We set all three of these fields to nil, to make sure that we can |
6256 | distinguish this dead window from any live window. Live leaf | |
6257 | windows will have buffer set, and combination windows will have | |
6258 | vchild or hchild set. */ | |
6259 | w->buffer = Qnil; | |
6260 | w->vchild = Qnil; | |
6261 | w->hchild = Qnil; | |
acf70840 GM |
6262 | |
6263 | Vwindow_list = Qnil; | |
7ab12479 JB |
6264 | } |
6265 | \f | |
6266 | static int | |
971de7fb | 6267 | count_windows (register struct window *window) |
7ab12479 JB |
6268 | { |
6269 | register int count = 1; | |
265a9e55 | 6270 | if (!NILP (window->next)) |
7ab12479 | 6271 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6272 | if (!NILP (window->vchild)) |
7ab12479 | 6273 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6274 | if (!NILP (window->hchild)) |
7ab12479 JB |
6275 | count += count_windows (XWINDOW (window->hchild)); |
6276 | return count; | |
6277 | } | |
6278 | ||
5500c422 | 6279 | |
177c0ea7 | 6280 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6281 | Value is last index + 1. */ |
6282 | ||
6283 | static int | |
971de7fb | 6284 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
6285 | { |
6286 | while (w) | |
6287 | { | |
6288 | if (!NILP (w->hchild)) | |
6289 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6290 | else if (!NILP (w->vchild)) | |
6291 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6292 | else |
5500c422 GM |
6293 | flat[i++] = w; |
6294 | ||
6295 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6296 | } | |
6297 | ||
6298 | return i; | |
6299 | } | |
6300 | ||
6301 | ||
6302 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6303 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6304 | can be returned. */ | |
6305 | ||
6306 | struct glyph * | |
971de7fb | 6307 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6308 | { |
6309 | struct glyph_row *row; | |
6310 | struct glyph *glyph; | |
6311 | ||
6312 | if (w->phys_cursor.vpos >= 0 | |
6313 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6314 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6315 | row->enabled_p) | |
6316 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6317 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6318 | else | |
6319 | glyph = NULL; | |
6320 | ||
6321 | return glyph; | |
6322 | } | |
6323 | ||
6324 | ||
7ab12479 | 6325 | static int |
971de7fb | 6326 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6327 | { |
6328 | register struct saved_window *p; | |
6329 | register struct window *w; | |
6330 | register Lisp_Object tem; | |
6331 | ||
265a9e55 | 6332 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6333 | { |
6334 | p = SAVED_WINDOW_N (vector, i); | |
6335 | w = XWINDOW (window); | |
6336 | ||
2a1893f4 | 6337 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6338 | p->window = window; |
6339 | p->buffer = w->buffer; | |
949cf20f KS |
6340 | p->left_col = w->left_col; |
6341 | p->top_line = w->top_line; | |
6342 | p->total_cols = w->total_cols; | |
6343 | p->total_lines = w->total_lines; | |
7ab12479 | 6344 | p->hscroll = w->hscroll; |
ea68264b | 6345 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6346 | p->display_table = w->display_table; |
949cf20f KS |
6347 | p->orig_top_line = w->orig_top_line; |
6348 | p->orig_total_lines = w->orig_total_lines; | |
6349 | p->left_margin_cols = w->left_margin_cols; | |
6350 | p->right_margin_cols = w->right_margin_cols; | |
6351 | p->left_fringe_width = w->left_fringe_width; | |
6352 | p->right_fringe_width = w->right_fringe_width; | |
6353 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6354 | p->scroll_bar_width = w->scroll_bar_width; | |
6355 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6356 | p->dedicated = w->dedicated; |
047aaeb9 | 6357 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6358 | if (!NILP (w->buffer)) |
7ab12479 JB |
6359 | { |
6360 | /* Save w's value of point in the window configuration. | |
6361 | If w is the selected window, then get the value of point | |
6362 | from the buffer; pointm is garbage in the selected window. */ | |
6363 | if (EQ (window, selected_window)) | |
6364 | { | |
6365 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6366 | set_marker_both (p->pointm, w->buffer, |
6367 | BUF_PT (XBUFFER (w->buffer)), | |
6368 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6369 | } |
6370 | else | |
eeb82665 | 6371 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6372 | |
eeb82665 | 6373 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6374 | p->start_at_line_beg = w->start_at_line_beg; |
6375 | ||
6376 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6377 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6378 | } |
6379 | else | |
6380 | { | |
6381 | p->pointm = Qnil; | |
6382 | p->start = Qnil; | |
6383 | p->mark = Qnil; | |
6384 | p->start_at_line_beg = Qnil; | |
6385 | } | |
6386 | ||
265a9e55 | 6387 | if (NILP (w->parent)) |
7ab12479 JB |
6388 | p->parent = Qnil; |
6389 | else | |
6390 | p->parent = XWINDOW (w->parent)->temslot; | |
6391 | ||
265a9e55 | 6392 | if (NILP (w->prev)) |
7ab12479 JB |
6393 | p->prev = Qnil; |
6394 | else | |
6395 | p->prev = XWINDOW (w->prev)->temslot; | |
6396 | ||
265a9e55 | 6397 | if (!NILP (w->vchild)) |
7ab12479 | 6398 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6399 | if (!NILP (w->hchild)) |
7ab12479 JB |
6400 | i = save_window_save (w->hchild, vector, i); |
6401 | } | |
6402 | ||
6403 | return i; | |
6404 | } | |
6405 | ||
a0d76c27 | 6406 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6407 | Scurrent_window_configuration, 0, 1, 0, |
6408 | doc: /* Return an object representing the current window configuration of FRAME. | |
6409 | If FRAME is nil or omitted, use the selected frame. | |
6410 | This describes the number of windows, their sizes and current buffers, | |
6411 | and for each displayed buffer, where display starts, and the positions of | |
6412 | point and mark. An exception is made for point in the current buffer: | |
6413 | its value is -not- saved. | |
6414 | This also records the currently selected frame, and FRAME's focus | |
6415 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 6416 | (Lisp_Object frame) |
7ab12479 JB |
6417 | { |
6418 | register Lisp_Object tem; | |
6419 | register int n_windows; | |
6420 | register struct save_window_data *data; | |
6421 | register int i; | |
44fa5b1e | 6422 | FRAME_PTR f; |
43bad991 | 6423 | |
44fa5b1e | 6424 | if (NILP (frame)) |
1ae1a37d | 6425 | frame = selected_frame; |
b7826503 | 6426 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6427 | f = XFRAME (frame); |
7ab12479 | 6428 | |
44fa5b1e | 6429 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6430 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6431 | PVEC_WINDOW_CONFIGURATION); | |
6432 | ||
6433 | data->frame_cols = FRAME_COLS (f); | |
6434 | data->frame_lines = FRAME_LINES (f); | |
6435 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6436 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6437 | data->selected_frame = selected_frame; |
44fa5b1e | 6438 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6439 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6440 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6441 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6442 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6443 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6444 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6445 | data->saved_windows = tem; | |
6446 | for (i = 0; i < n_windows; i++) | |
6447 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6448 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6449 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6450 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6451 | return (tem); |
6452 | } | |
6453 | ||
6454 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6455 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6456 | doc: /* Execute BODY, preserving window sizes and contents. |
6457 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6458 | Restore which buffer appears in which window, where display starts, |
6459 | and the value of point and mark for each window. | |
6460 | Also restore the choice of selected window. | |
6461 | Also restore which buffer is current. | |
6924dda6 | 6462 | Does not restore the value of point in current buffer. |
7254a30c | 6463 | usage: (save-window-excursion BODY...) */) |
5842a27b | 6464 | (Lisp_Object args) |
7ab12479 JB |
6465 | { |
6466 | register Lisp_Object val; | |
aed13378 | 6467 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6468 | |
6469 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6470 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6471 | val = Fprogn (args); |
6472 | return unbind_to (count, val); | |
6473 | } | |
5500c422 | 6474 | |
94e16dd5 KS |
6475 | |
6476 | \f | |
6477 | /*********************************************************************** | |
6478 | Window Split Tree | |
6479 | ***********************************************************************/ | |
6480 | ||
6481 | static Lisp_Object | |
971de7fb | 6482 | window_tree (struct window *w) |
94e16dd5 KS |
6483 | { |
6484 | Lisp_Object tail = Qnil; | |
6485 | Lisp_Object result = Qnil; | |
6486 | ||
6487 | while (w) | |
6488 | { | |
6489 | Lisp_Object wn; | |
6490 | ||
6491 | XSETWINDOW (wn, w); | |
6492 | if (!NILP (w->hchild)) | |
6493 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6494 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6495 | else if (!NILP (w->vchild)) |
6496 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6497 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6498 | |
6499 | if (NILP (result)) | |
6500 | { | |
6501 | result = tail = Fcons (wn, Qnil); | |
6502 | } | |
6503 | else | |
6504 | { | |
6505 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6506 | tail = XCDR (tail); | |
6507 | } | |
6508 | ||
6509 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6510 | } | |
6511 | ||
6512 | return result; | |
6513 | } | |
6514 | ||
6515 | ||
6516 | ||
c16e1cc3 | 6517 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6518 | 0, 1, 0, |
c16e1cc3 | 6519 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6520 | |
6521 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6522 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6523 | is the frame's minibuffer window. |
6524 | ||
6525 | If the root window is not split, ROOT is the root window itself. | |
6526 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6527 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6528 | size and position of the subwindows in the split, and the rest of the |
6529 | elements are the subwindows in the split. Each of the subwindows may | |
6530 | again be a window or a list representing a window split, and so on. | |
6531 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6532 | ||
6533 | If FRAME is nil or omitted, return information on the currently | |
6534 | selected frame. */) | |
5842a27b | 6535 | (Lisp_Object frame) |
94e16dd5 | 6536 | { |
94e16dd5 KS |
6537 | FRAME_PTR f; |
6538 | ||
6539 | if (NILP (frame)) | |
6540 | frame = selected_frame; | |
6541 | ||
6542 | CHECK_FRAME (frame); | |
6543 | f = XFRAME (frame); | |
6544 | ||
6545 | if (!FRAME_LIVE_P (f)) | |
6546 | return Qnil; | |
6547 | ||
c16e1cc3 | 6548 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6549 | } |
6550 | ||
5500c422 GM |
6551 | \f |
6552 | /*********************************************************************** | |
6553 | Marginal Areas | |
6554 | ***********************************************************************/ | |
6555 | ||
6556 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6557 | 2, 3, 0, |
fdb82f93 | 6558 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6559 | If WINDOW is nil, set margins of the currently selected window. |
6560 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6561 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6562 | does the same for the right marginal area. A nil width parameter | |
6563 | means no margin. */) | |
5842a27b | 6564 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
6565 | { |
6566 | struct window *w = decode_window (window); | |
5500c422 | 6567 | |
6b61353c KH |
6568 | /* Translate negative or zero widths to nil. |
6569 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6570 | |
c10ce82e | 6571 | if (!NILP (left_width)) |
6b61353c | 6572 | { |
c10ce82e JB |
6573 | CHECK_NUMBER (left_width); |
6574 | if (XINT (left_width) <= 0) | |
6575 | left_width = Qnil; | |
6b61353c | 6576 | } |
5500c422 | 6577 | |
c10ce82e | 6578 | if (!NILP (right_width)) |
6b61353c | 6579 | { |
c10ce82e JB |
6580 | CHECK_NUMBER (right_width); |
6581 | if (XINT (right_width) <= 0) | |
6582 | right_width = Qnil; | |
6b61353c | 6583 | } |
5500c422 | 6584 | |
c10ce82e JB |
6585 | if (!EQ (w->left_margin_cols, left_width) |
6586 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6587 | { |
c10ce82e JB |
6588 | w->left_margin_cols = left_width; |
6589 | w->right_margin_cols = right_width; | |
949cf20f KS |
6590 | |
6591 | adjust_window_margins (w); | |
6592 | ||
6593 | ++windows_or_buffers_changed; | |
6594 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6595 | } | |
5500c422 | 6596 | |
5500c422 GM |
6597 | return Qnil; |
6598 | } | |
6599 | ||
6600 | ||
6601 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6602 | 0, 1, 0, | |
fdb82f93 PJ |
6603 | doc: /* Get width of marginal areas of window WINDOW. |
6604 | If WINDOW is omitted or nil, use the currently selected window. | |
6605 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6606 | If a marginal area does not exist, its width will be returned | |
6607 | as nil. */) | |
5842a27b | 6608 | (Lisp_Object window) |
5500c422 GM |
6609 | { |
6610 | struct window *w = decode_window (window); | |
949cf20f KS |
6611 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6612 | } | |
6613 | ||
6614 | ||
6615 | \f | |
6616 | /*********************************************************************** | |
6617 | Fringes | |
6618 | ***********************************************************************/ | |
6619 | ||
6620 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6621 | 2, 4, 0, | |
6b61353c KH |
6622 | doc: /* Set the fringe widths of window WINDOW. |
6623 | If WINDOW is nil, set the fringe widths of the currently selected | |
6624 | window. | |
6625 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6626 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6627 | fringe width. If a fringe width arg is nil, that means to use the | |
6628 | frame's default fringe width. Default fringe widths can be set with | |
6629 | the command `set-fringe-style'. | |
6630 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6631 | outside of the display margins. By default, fringes are drawn between | |
6632 | display marginal areas and the text area. */) | |
5842a27b | 6633 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6634 | { |
6635 | struct window *w = decode_window (window); | |
6636 | ||
c10ce82e JB |
6637 | if (!NILP (left_width)) |
6638 | CHECK_NATNUM (left_width); | |
6639 | if (!NILP (right_width)) | |
6640 | CHECK_NATNUM (right_width); | |
5a857365 | 6641 | |
017e297e | 6642 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6643 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6644 | && (!EQ (w->left_fringe_width, left_width) | |
6645 | || !EQ (w->right_fringe_width, right_width) | |
6646 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6647 | { |
c10ce82e JB |
6648 | w->left_fringe_width = left_width; |
6649 | w->right_fringe_width = right_width; | |
949cf20f KS |
6650 | w->fringes_outside_margins = outside_margins; |
6651 | ||
6652 | adjust_window_margins (w); | |
6653 | ||
6654 | clear_glyph_matrix (w->current_matrix); | |
6655 | w->window_end_valid = Qnil; | |
6656 | ||
6657 | ++windows_or_buffers_changed; | |
6658 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6659 | } | |
6660 | ||
6661 | return Qnil; | |
6662 | } | |
6663 | ||
6664 | ||
6665 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6666 | 0, 1, 0, | |
6667 | doc: /* Get width of fringes of window WINDOW. | |
6668 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6669 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6670 | (Lisp_Object window) |
949cf20f KS |
6671 | { |
6672 | struct window *w = decode_window (window); | |
d46c6df5 | 6673 | |
949cf20f KS |
6674 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6675 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6676 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6677 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6678 | } |
6679 | ||
6680 | ||
6681 | \f | |
6682 | /*********************************************************************** | |
6683 | Scroll bars | |
6684 | ***********************************************************************/ | |
6685 | ||
6686 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6687 | 2, 4, 0, | |
6688 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6689 | If window is nil, set scroll bars of the currently selected window. | |
6690 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6691 | this is automatically adjusted to a multiple of the frame column width. | |
6692 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6693 | bar: left, right, or nil. | |
6b61353c | 6694 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6695 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6696 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6697 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6698 | { |
6699 | struct window *w = decode_window (window); | |
6700 | ||
6701 | if (!NILP (width)) | |
0f8fe9a2 SM |
6702 | { |
6703 | CHECK_NATNUM (width); | |
949cf20f | 6704 | |
0f8fe9a2 SM |
6705 | if (XINT (width) == 0) |
6706 | vertical_type = Qnil; | |
6707 | } | |
949cf20f | 6708 | |
413a79ad | 6709 | if (!(NILP (vertical_type) |
0cc1039f | 6710 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6711 | || EQ (vertical_type, Qright) |
6712 | || EQ (vertical_type, Qt))) | |
6713 | error ("Invalid type of vertical scroll bar"); | |
6714 | ||
949cf20f KS |
6715 | if (!EQ (w->scroll_bar_width, width) |
6716 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6717 | { | |
6718 | w->scroll_bar_width = width; | |
6719 | w->vertical_scroll_bar_type = vertical_type; | |
6720 | ||
6721 | adjust_window_margins (w); | |
6722 | ||
6723 | clear_glyph_matrix (w->current_matrix); | |
6724 | w->window_end_valid = Qnil; | |
6725 | ||
6726 | ++windows_or_buffers_changed; | |
6727 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6728 | } | |
6729 | ||
6730 | return Qnil; | |
6731 | } | |
6732 | ||
6733 | ||
6734 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6735 | 0, 1, 0, | |
6736 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6737 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
6738 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6739 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6740 | value. */) | |
5842a27b | 6741 | (Lisp_Object window) |
949cf20f KS |
6742 | { |
6743 | struct window *w = decode_window (window); | |
6744 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6745 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6746 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6747 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6748 | Fcons (w->vertical_scroll_bar_type, | |
6749 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6750 | } |
6751 | ||
6752 | ||
7ab12479 | 6753 | \f |
5500c422 GM |
6754 | /*********************************************************************** |
6755 | Smooth scrolling | |
6756 | ***********************************************************************/ | |
6757 | ||
0cc1039f | 6758 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6759 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6760 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6761 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6762 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6763 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6764 | { |
47004952 | 6765 | Lisp_Object result; |
5500c422 GM |
6766 | struct frame *f; |
6767 | struct window *w; | |
177c0ea7 | 6768 | |
5500c422 GM |
6769 | if (NILP (window)) |
6770 | window = selected_window; | |
47004952 | 6771 | else |
b7826503 | 6772 | CHECK_WINDOW (window); |
5500c422 GM |
6773 | w = XWINDOW (window); |
6774 | f = XFRAME (w->frame); | |
177c0ea7 | 6775 | |
5500c422 | 6776 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6777 | result = (NILP (pixels_p) |
6778 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6779 | : make_number (-w->vscroll)); | |
5500c422 | 6780 | else |
47004952 GM |
6781 | result = make_number (0); |
6782 | return result; | |
5500c422 GM |
6783 | } |
6784 | ||
6785 | ||
6786 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6787 | 2, 3, 0, |
fdb82f93 | 6788 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6789 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6790 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6791 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6792 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6793 | corresponds to an integral number of pixels. The return value is the | |
6794 | result of this rounding. | |
6795 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6796 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6797 | { |
6798 | struct window *w; | |
6799 | struct frame *f; | |
177c0ea7 | 6800 | |
5500c422 GM |
6801 | if (NILP (window)) |
6802 | window = selected_window; | |
47004952 | 6803 | else |
b7826503 PJ |
6804 | CHECK_WINDOW (window); |
6805 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6806 | |
5500c422 GM |
6807 | w = XWINDOW (window); |
6808 | f = XFRAME (w->frame); | |
6809 | ||
6810 | if (FRAME_WINDOW_P (f)) | |
6811 | { | |
6812 | int old_dy = w->vscroll; | |
177c0ea7 | 6813 | |
0cc1039f KS |
6814 | w->vscroll = - (NILP (pixels_p) |
6815 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6816 | : XFLOATINT (vscroll)); | |
47004952 | 6817 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6818 | |
e56263e5 KS |
6819 | if (w->vscroll != old_dy) |
6820 | { | |
6821 | /* Adjust glyph matrix of the frame if the virtual display | |
6822 | area becomes larger than before. */ | |
6823 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6824 | adjust_glyphs (f); | |
177c0ea7 | 6825 | |
e56263e5 KS |
6826 | /* Prevent redisplay shortcuts. */ |
6827 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6828 | } | |
5500c422 | 6829 | } |
177c0ea7 | 6830 | |
0cc1039f | 6831 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6832 | } |
177c0ea7 | 6833 | |
7bbb5782 GM |
6834 | \f |
6835 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6836 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6837 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
6838 | |
6839 | void | |
971de7fb | 6840 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6841 | { |
56f2de10 | 6842 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6843 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6844 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6845 | } |
6846 | ||
6847 | ||
6848 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6849 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6850 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6851 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6852 | |
67492200 | 6853 | static int |
971de7fb | 6854 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6855 | { |
67492200 | 6856 | int cont; |
177c0ea7 | 6857 | |
67492200 | 6858 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6859 | { |
6860 | if (!NILP (w->hchild)) | |
f95464e4 | 6861 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6862 | else if (!NILP (w->vchild)) |
f95464e4 | 6863 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6864 | else |
0f532a9a | 6865 | cont = fn (w, user_data); |
177c0ea7 | 6866 | |
7bbb5782 GM |
6867 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6868 | } | |
67492200 GM |
6869 | |
6870 | return cont; | |
7bbb5782 GM |
6871 | } |
6872 | ||
6873 | ||
6d194a45 | 6874 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6875 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6876 | the window start. */ |
6877 | ||
67492200 | 6878 | static int |
971de7fb | 6879 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6880 | { |
08c1d235 SM |
6881 | if (MINI_WINDOW_P (w) |
6882 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6883 | && (w == XWINDOW (selected_window) | |
6884 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6885 | && ! NILP (Vminibuf_scroll_window) | |
6886 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6887 | freeze_p = NULL; |
177c0ea7 | 6888 | |
f95464e4 | 6889 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6890 | return 1; |
7bbb5782 GM |
6891 | } |
6892 | ||
6893 | ||
6894 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6895 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6896 | means freeze the window start. */ | |
6897 | ||
6898 | void | |
971de7fb | 6899 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6900 | { |
cbccabec | 6901 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6902 | } |
5500c422 GM |
6903 | |
6904 | \f | |
6905 | /*********************************************************************** | |
6906 | Initialization | |
6907 | ***********************************************************************/ | |
6908 | ||
cbff28e8 | 6909 | /* Return 1 if window configurations C1 and C2 |
9d14503e | 6910 | describe the same state of affairs. This is used by Fequal. */ |
cbff28e8 RS |
6911 | |
6912 | int | |
971de7fb | 6913 | compare_window_configurations (Lisp_Object c1, Lisp_Object c2, int ignore_positions) |
cbff28e8 RS |
6914 | { |
6915 | register struct save_window_data *d1, *d2; | |
6916 | struct Lisp_Vector *sw1, *sw2; | |
6917 | int i; | |
6918 | ||
663fbbba KS |
6919 | CHECK_WINDOW_CONFIGURATION (c1); |
6920 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 6921 | |
cbff28e8 RS |
6922 | d1 = (struct save_window_data *) XVECTOR (c1); |
6923 | d2 = (struct save_window_data *) XVECTOR (c2); | |
6924 | sw1 = XVECTOR (d1->saved_windows); | |
6925 | sw2 = XVECTOR (d2->saved_windows); | |
6926 | ||
b05b4e27 | 6927 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 6928 | return 0; |
b05b4e27 | 6929 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 6930 | return 0; |
b05b4e27 | 6931 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
6932 | return 0; |
6933 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
6934 | return 0; | |
6935 | /* Don't compare the current_window field directly. | |
6936 | Instead see w1_is_current and w2_is_current, below. */ | |
6937 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
6938 | return 0; | |
2f8274be | 6939 | if (! ignore_positions) |
3f49fddc KS |
6940 | { |
6941 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
6942 | return 0; | |
6943 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
6944 | return 0; | |
6945 | } | |
cbff28e8 RS |
6946 | /* Don't compare the root_window field. |
6947 | We don't require the two configurations | |
6948 | to use the same window object, | |
6949 | and the two root windows must be equivalent | |
6950 | if everything else compares equal. */ | |
6951 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
6952 | return 0; | |
cbff28e8 RS |
6953 | |
6954 | /* Verify that the two confis have the same number of windows. */ | |
6955 | if (sw1->size != sw2->size) | |
6956 | return 0; | |
6957 | ||
6958 | for (i = 0; i < sw1->size; i++) | |
6959 | { | |
6960 | struct saved_window *p1, *p2; | |
6961 | int w1_is_current, w2_is_current; | |
6962 | ||
6963 | p1 = SAVED_WINDOW_N (sw1, i); | |
6964 | p2 = SAVED_WINDOW_N (sw2, i); | |
6965 | ||
6966 | /* Verify that the current windows in the two | |
6967 | configurations correspond to each other. */ | |
6968 | w1_is_current = EQ (d1->current_window, p1->window); | |
6969 | w2_is_current = EQ (d2->current_window, p2->window); | |
6970 | ||
6971 | if (w1_is_current != w2_is_current) | |
6972 | return 0; | |
6973 | ||
6974 | /* Verify that the corresponding windows do match. */ | |
6975 | if (! EQ (p1->buffer, p2->buffer)) | |
6976 | return 0; | |
949cf20f | 6977 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 6978 | return 0; |
949cf20f | 6979 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 6980 | return 0; |
949cf20f | 6981 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 6982 | return 0; |
949cf20f | 6983 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 6984 | return 0; |
cbff28e8 RS |
6985 | if (! EQ (p1->display_table, p2->display_table)) |
6986 | return 0; | |
6987 | if (! EQ (p1->parent, p2->parent)) | |
6988 | return 0; | |
6989 | if (! EQ (p1->prev, p2->prev)) | |
6990 | return 0; | |
2f8274be RS |
6991 | if (! ignore_positions) |
6992 | { | |
6993 | if (! EQ (p1->hscroll, p2->hscroll)) | |
6994 | return 0; | |
ea68264b GM |
6995 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
6996 | return 0; | |
2f8274be RS |
6997 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
6998 | return 0; | |
6999 | if (NILP (Fequal (p1->start, p2->start))) | |
7000 | return 0; | |
7001 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7002 | return 0; | |
7003 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7004 | return 0; | |
7005 | } | |
949cf20f KS |
7006 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7007 | return 0; | |
7008 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7009 | return 0; | |
7010 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7011 | return 0; | |
7012 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7013 | return 0; | |
7014 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7015 | return 0; | |
7016 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7017 | return 0; | |
7018 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7019 | return 0; | |
cbff28e8 RS |
7020 | } |
7021 | ||
7022 | return 1; | |
7023 | } | |
2f8274be RS |
7024 | |
7025 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7026 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7027 | doc: /* Compare two window configurations as regards the structure of windows. |
7028 | This function ignores details such as the values of point and mark | |
7029 | and scrolling positions. */) | |
5842a27b | 7030 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
7031 | { |
7032 | if (compare_window_configurations (x, y, 1)) | |
7033 | return Qt; | |
7034 | return Qnil; | |
7035 | } | |
cbff28e8 | 7036 | \f |
dfcf069d | 7037 | void |
971de7fb | 7038 | init_window_once (void) |
7ab12479 | 7039 | { |
3224dac1 | 7040 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7041 | XSETFRAME (selected_frame, f); |
7042 | Vterminal_frame = selected_frame; | |
7043 | minibuf_window = f->minibuffer_window; | |
7044 | selected_window = f->selected_window; | |
7045 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7046 | |
7047 | window_initialized = 1; | |
7ab12479 JB |
7048 | } |
7049 | ||
67492200 | 7050 | void |
971de7fb | 7051 | init_window (void) |
67492200 GM |
7052 | { |
7053 | Vwindow_list = Qnil; | |
7054 | } | |
7055 | ||
dfcf069d | 7056 | void |
971de7fb | 7057 | syms_of_window (void) |
7ab12479 | 7058 | { |
d67b4f80 | 7059 | Qscroll_up = intern_c_string ("scroll-up"); |
c525d842 CY |
7060 | staticpro (&Qscroll_up); |
7061 | ||
d67b4f80 | 7062 | Qscroll_down = intern_c_string ("scroll-down"); |
c525d842 CY |
7063 | staticpro (&Qscroll_down); |
7064 | ||
a4b000fb JL |
7065 | Qscroll_command = intern_c_string ("scroll-command"); |
7066 | staticpro (&Qscroll_command); | |
7067 | ||
7068 | Fput (Qscroll_up, Qscroll_command, Qt); | |
7069 | Fput (Qscroll_down, Qscroll_command, Qt); | |
7070 | ||
d67b4f80 | 7071 | Qwindow_size_fixed = intern_c_string ("window-size-fixed"); |
8a37516b | 7072 | staticpro (&Qwindow_size_fixed); |
c0e7ccd3 | 7073 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7074 | |
543f5fb1 RS |
7075 | staticpro (&Qwindow_configuration_change_hook); |
7076 | Qwindow_configuration_change_hook | |
d67b4f80 | 7077 | = intern_c_string ("window-configuration-change-hook"); |
543f5fb1 | 7078 | |
d67b4f80 | 7079 | Qwindowp = intern_c_string ("windowp"); |
7ab12479 JB |
7080 | staticpro (&Qwindowp); |
7081 | ||
d67b4f80 | 7082 | Qwindow_configuration_p = intern_c_string ("window-configuration-p"); |
3f8ab7bd RS |
7083 | staticpro (&Qwindow_configuration_p); |
7084 | ||
d67b4f80 | 7085 | Qwindow_live_p = intern_c_string ("window-live-p"); |
806b4d9b | 7086 | staticpro (&Qwindow_live_p); |
605be8af | 7087 | |
d67b4f80 | 7088 | Qdisplay_buffer = intern_c_string ("display-buffer"); |
87478b52 SM |
7089 | staticpro (&Qdisplay_buffer); |
7090 | ||
d67b4f80 | 7091 | Qtemp_buffer_show_hook = intern_c_string ("temp-buffer-show-hook"); |
a58ec57d RS |
7092 | staticpro (&Qtemp_buffer_show_hook); |
7093 | ||
67492200 | 7094 | staticpro (&Vwindow_list); |
8bfb170b KS |
7095 | |
7096 | minibuf_selected_window = Qnil; | |
3dbab091 | 7097 | staticpro (&minibuf_selected_window); |
67492200 | 7098 | |
c876b227 | 7099 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7100 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7101 | window_scroll_preserve_hpos = -1; |
7102 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7103 | |
7ab12479 | 7104 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7105 | doc: /* Non-nil means call as function to display a help buffer. |
7106 | The function is called with one argument, the buffer to be displayed. | |
7107 | Used by `with-output-to-temp-buffer'. | |
7108 | If this function is used, then it must do the entire job of showing | |
7109 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7110 | Vtemp_buffer_show_function = Qnil; |
7111 | ||
7ab12479 | 7112 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7113 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7114 | Vminibuf_scroll_window = Qnil; |
7115 | ||
cc91894c | 7116 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7117 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7118 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7119 | is displayed in the `mode-line' face. */); | |
7120 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7121 | |
7ab12479 | 7122 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7123 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7124 | Vother_window_scroll_buffer = Qnil; |
7125 | ||
e56263e5 KS |
7126 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7127 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7128 | auto_window_vscroll_p = 1; | |
7129 | ||
7ab12479 | 7130 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, |
fdb82f93 | 7131 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7132 | next_screen_context_lines = 2; |
7133 | ||
7ab12479 | 7134 | DEFVAR_INT ("window-min-height", &window_min_height, |
047aaeb9 MR |
7135 | doc: /* Allow deleting windows less than this tall. |
7136 | The value is measured in line units. If a window wants a modeline it | |
7137 | is counted as one line. | |
7138 | ||
7139 | Emacs honors settings of this variable when enlarging or shrinking | |
7140 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7141 | window_min_height = 4; |
7142 | ||
7143 | DEFVAR_INT ("window-min-width", &window_min_width, | |
047aaeb9 MR |
7144 | doc: /* Allow deleting windows less than this wide. |
7145 | The value is measured in characters and includes any fringes or | |
7146 | the scrollbar. | |
7147 | ||
7148 | Emacs honors settings of this variable when enlarging or shrinking | |
7149 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7150 | window_min_width = 10; |
7151 | ||
5500c422 GM |
7152 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7153 | &Vscroll_preserve_screen_position, | |
c876b227 | 7154 | doc: /* *Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7155 | A value of nil means point does not keep its screen position except |
7156 | at the scroll margin or window boundary respectively. | |
7157 | A value of t means point keeps its screen position if the scroll | |
7158 | command moved it vertically out of the window, e.g. when scrolling | |
7159 | by full screens. | |
9013a7f8 | 7160 | Any other value means point always keeps its screen position. |
a4b000fb JL |
7161 | Scroll commands should have the `scroll-command' property |
7162 | on their symbols to be controlled by this variable. */); | |
5500c422 | 7163 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7164 | |
a1562258 SM |
7165 | DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type, |
7166 | doc: /* Type of marker to use for `window-point'. */); | |
7167 | Vwindow_point_insertion_type = Qnil; | |
7168 | ||
543f5fb1 RS |
7169 | DEFVAR_LISP ("window-configuration-change-hook", |
7170 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7171 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7172 | The buffer-local part is run once per window, with the relevant window |
7173 | selected; while the global part is run only once for the modified frame, | |
7174 | with the relevant frame selected. */); | |
543f5fb1 RS |
7175 | Vwindow_configuration_change_hook = Qnil; |
7176 | ||
666e158e MB |
7177 | DEFVAR_LISP ("recenter-redisplay", &Vrecenter_redisplay, |
7178 | doc: /* If non-nil, then the `recenter' command with a nil argument | |
6e6e5760 | 7179 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
7180 | frame to be redrawn only if it is a tty frame. */); |
7181 | Vrecenter_redisplay = Qtty; | |
7182 | ||
7183 | ||
7ab12479 JB |
7184 | defsubr (&Sselected_window); |
7185 | defsubr (&Sminibuffer_window); | |
7186 | defsubr (&Swindow_minibuffer_p); | |
7187 | defsubr (&Swindowp); | |
806b4d9b | 7188 | defsubr (&Swindow_live_p); |
7ab12479 | 7189 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7190 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7191 | defsubr (&Swindow_buffer); |
7192 | defsubr (&Swindow_height); | |
7193 | defsubr (&Swindow_width); | |
35ea56c9 | 7194 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7195 | defsubr (&Swindow_hscroll); |
7196 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7197 | defsubr (&Swindow_redisplay_end_trigger); |
7198 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7199 | defsubr (&Swindow_edges); |
c99a9eb3 | 7200 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 7201 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
7202 | defsubr (&Swindow_inside_edges); |
7203 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 7204 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
7205 | defsubr (&Scoordinates_in_window_p); |
7206 | defsubr (&Swindow_at); | |
7ab12479 JB |
7207 | defsubr (&Swindow_point); |
7208 | defsubr (&Swindow_start); | |
7209 | defsubr (&Swindow_end); | |
7210 | defsubr (&Sset_window_point); | |
7211 | defsubr (&Sset_window_start); | |
7212 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7213 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7214 | defsubr (&Swindow_display_table); |
7215 | defsubr (&Sset_window_display_table); | |
7216 | defsubr (&Snext_window); | |
7217 | defsubr (&Sprevious_window); | |
7218 | defsubr (&Sother_window); | |
7219 | defsubr (&Sget_lru_window); | |
7220 | defsubr (&Sget_largest_window); | |
7221 | defsubr (&Sget_buffer_window); | |
7222 | defsubr (&Sdelete_other_windows); | |
7223 | defsubr (&Sdelete_windows_on); | |
7224 | defsubr (&Sreplace_buffer_in_windows); | |
7225 | defsubr (&Sdelete_window); | |
7226 | defsubr (&Sset_window_buffer); | |
7227 | defsubr (&Sselect_window); | |
6b61353c | 7228 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7229 | defsubr (&Ssplit_window); |
7230 | defsubr (&Senlarge_window); | |
7231 | defsubr (&Sshrink_window); | |
0d384044 | 7232 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7233 | defsubr (&Sscroll_up); |
7234 | defsubr (&Sscroll_down); | |
7235 | defsubr (&Sscroll_left); | |
7236 | defsubr (&Sscroll_right); | |
ccd0664b | 7237 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7238 | defsubr (&Sscroll_other_window); |
fa832261 | 7239 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7240 | defsubr (&Srecenter); |
81fe0836 | 7241 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7242 | defsubr (&Smove_to_window_line); |
7243 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7244 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7245 | defsubr (&Sset_window_configuration); |
7246 | defsubr (&Scurrent_window_configuration); | |
7247 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7248 | defsubr (&Swindow_tree); |
5500c422 GM |
7249 | defsubr (&Sset_window_margins); |
7250 | defsubr (&Swindow_margins); | |
949cf20f KS |
7251 | defsubr (&Sset_window_fringes); |
7252 | defsubr (&Swindow_fringes); | |
7253 | defsubr (&Sset_window_scroll_bars); | |
7254 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7255 | defsubr (&Swindow_vscroll); |
7256 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7257 | defsubr (&Scompare_window_configurations); |
67492200 | 7258 | defsubr (&Swindow_list); |
cfbb2395 JB |
7259 | defsubr (&Swindow_parameters); |
7260 | defsubr (&Swindow_parameter); | |
7261 | defsubr (&Sset_window_parameter); | |
7262 | ||
7ab12479 JB |
7263 | } |
7264 | ||
dfcf069d | 7265 | void |
971de7fb | 7266 | keys_of_window (void) |
7ab12479 JB |
7267 | { |
7268 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7269 | initial_define_key (control_x_map, '2', "split-window"); | |
7270 | initial_define_key (control_x_map, '0', "delete-window"); | |
7271 | initial_define_key (control_x_map, 'o', "other-window"); | |
7272 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7273 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7274 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7275 | ||
32129746 | 7276 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 7277 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 7278 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 7279 | } |
6b61353c KH |
7280 | |
7281 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7282 | (do not change this comment) */ |