1 /* Window creation, deletion and examination for GNU Emacs.
2 Does not include redisplay.
3 Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
36 #include "dispextern.h"
37 #include "blockinput.h"
38 #include "intervals.h"
42 #endif /* HAVE_X_WINDOWS */
54 Lisp_Object Qwindowp
, Qwindow_live_p
, Qwindow_configuration_p
;
55 Lisp_Object Qwindow_size_fixed
;
56 extern Lisp_Object Qleft_margin
, Qright_margin
;
58 static int displayed_window_lines
P_ ((struct window
*));
59 static struct window
*decode_window
P_ ((Lisp_Object
));
60 static int count_windows
P_ ((struct window
*));
61 static int get_leaf_windows
P_ ((struct window
*, struct window
**, int));
62 static void window_scroll
P_ ((Lisp_Object
, int, int, int));
63 static void window_scroll_pixel_based
P_ ((Lisp_Object
, int, int, int));
64 static void window_scroll_line_based
P_ ((Lisp_Object
, int, int, int));
65 static int window_min_size_1
P_ ((struct window
*, int));
66 static int window_min_size
P_ ((struct window
*, int, int, int *));
67 static void size_window
P_ ((Lisp_Object
, int, int, int));
68 static int freeze_window_start
P_ ((struct window
*, void *));
69 static int window_fixed_size_p
P_ ((struct window
*, int, int));
70 static void enlarge_window
P_ ((Lisp_Object
, int, int, int));
71 static Lisp_Object window_list
P_ ((void));
72 static int add_window_to_list
P_ ((struct window
*, void *));
73 static int candidate_window_p
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
75 static Lisp_Object next_window
P_ ((Lisp_Object
, Lisp_Object
,
77 static void decode_next_window_args
P_ ((Lisp_Object
*, Lisp_Object
*,
79 static int foreach_window_1
P_ ((struct window
*,
80 int (* fn
) (struct window
*, void *),
82 static Lisp_Object window_list_1
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
84 /* The value of `window-size-fixed'. */
86 int window_size_fixed
;
88 /* This is the window in which the terminal's cursor should
89 be left when nothing is being done with it. This must
90 always be a leaf window, and its buffer is selected by
91 the top level editing loop at the end of each command.
93 This value is always the same as
94 FRAME_SELECTED_WINDOW (selected_frame). */
96 Lisp_Object selected_window
;
98 /* A list of all windows for use by next_window and Fwindow_list.
99 Functions creating or deleting windows should invalidate this cache
100 by setting it to nil. */
102 Lisp_Object Vwindow_list
;
104 /* The mini-buffer window of the selected frame.
105 Note that you cannot test for mini-bufferness of an arbitrary window
106 by comparing against this; but you can test for mini-bufferness of
107 the selected window. */
109 Lisp_Object minibuf_window
;
111 /* Non-nil means it is the window whose mode line should be
112 shown as the selected window when the minibuffer is selected. */
114 Lisp_Object minibuf_selected_window
;
116 /* Non-nil means it is the window for C-M-v to scroll
117 when the mini-buffer is selected. */
119 Lisp_Object Vminibuf_scroll_window
;
121 /* Non-nil means this is the buffer whose window C-M-v should scroll. */
123 Lisp_Object Vother_window_scroll_buffer
;
125 /* Non-nil means it's function to call to display temp buffers. */
127 Lisp_Object Vtemp_buffer_show_function
;
129 /* Non-zero means to use mode-line-inactive face in all windows but the
130 selected-window and the minibuffer-scroll-window when the
131 minibuffer is active. */
132 int mode_line_in_non_selected_windows
;
134 /* If a window gets smaller than either of these, it is removed. */
136 EMACS_INT window_min_height
;
137 EMACS_INT window_min_width
;
139 /* Nonzero implies Fdisplay_buffer should create windows. */
143 /* Nonzero implies make new frames for Fdisplay_buffer. */
147 /* Nonzero means reuse existing frames for displaying buffers. */
149 int display_buffer_reuse_frames
;
151 /* Non-nil means use this function instead of default */
153 Lisp_Object Vpop_up_frame_function
;
155 /* Function to call to handle Fdisplay_buffer. */
157 Lisp_Object Vdisplay_buffer_function
;
159 /* Non-nil means that Fdisplay_buffer should even the heights of windows. */
161 Lisp_Object Veven_window_heights
;
163 /* List of buffer *names* for buffers that should have their own frames. */
165 Lisp_Object Vspecial_display_buffer_names
;
167 /* List of regexps for buffer names that should have their own frames. */
169 Lisp_Object Vspecial_display_regexps
;
171 /* Function to pop up a special frame. */
173 Lisp_Object Vspecial_display_function
;
175 /* List of buffer *names* for buffers to appear in selected window. */
177 Lisp_Object Vsame_window_buffer_names
;
179 /* List of regexps for buffer names to appear in selected window. */
181 Lisp_Object Vsame_window_regexps
;
183 /* Hook run at end of temp_output_buffer_show. */
185 Lisp_Object Qtemp_buffer_show_hook
;
187 /* Fdisplay_buffer always splits the largest window
188 if that window is more than this high. */
190 EMACS_INT split_height_threshold
;
192 /* Number of lines of continuity in scrolling by screenfuls. */
194 EMACS_INT next_screen_context_lines
;
196 /* Incremented for each window created. */
198 static int sequence_number
;
200 /* Nonzero after init_window_once has finished. */
202 static int window_initialized
;
204 /* Hook to run when window config changes. */
206 Lisp_Object Qwindow_configuration_change_hook
;
207 Lisp_Object Vwindow_configuration_change_hook
;
209 /* Nonzero means scroll commands try to put point
210 at the same screen height as previously. */
212 Lisp_Object Vscroll_preserve_screen_position
;
214 #if 0 /* This isn't used anywhere. */
215 /* Nonzero means we can split a frame even if it is "unsplittable". */
216 static int inhibit_frame_unsplittable
;
219 extern EMACS_INT scroll_margin
;
221 extern Lisp_Object Qwindow_scroll_functions
, Vwindow_scroll_functions
;
223 DEFUN ("windowp", Fwindowp
, Swindowp
, 1, 1, 0,
224 doc
: /* Returns t if OBJECT is a window. */)
228 return WINDOWP (object
) ? Qt
: Qnil
;
231 DEFUN ("window-live-p", Fwindow_live_p
, Swindow_live_p
, 1, 1, 0,
232 doc
: /* Returns t if OBJECT is a window which is currently visible. */)
236 return WINDOW_LIVE_P (object
) ? Qt
: Qnil
;
243 register struct window
*p
;
245 p
= allocate_window ();
246 XSETFASTINT (p
->sequence_number
, ++sequence_number
);
247 XSETFASTINT (p
->left_col
, 0);
248 XSETFASTINT (p
->top_line
, 0);
249 XSETFASTINT (p
->total_lines
, 0);
250 XSETFASTINT (p
->total_cols
, 0);
251 XSETFASTINT (p
->hscroll
, 0);
252 XSETFASTINT (p
->min_hscroll
, 0);
253 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
254 p
->start
= Fmake_marker ();
255 p
->pointm
= Fmake_marker ();
256 XSETFASTINT (p
->use_time
, 0);
258 p
->display_table
= Qnil
;
260 p
->pseudo_window_p
= 0;
261 bzero (&p
->cursor
, sizeof (p
->cursor
));
262 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
263 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
264 p
->desired_matrix
= p
->current_matrix
= 0;
265 p
->phys_cursor_type
= -1;
266 p
->phys_cursor_width
= -1;
267 p
->must_be_updated_p
= 0;
268 XSETFASTINT (p
->window_end_vpos
, 0);
269 XSETFASTINT (p
->window_end_pos
, 0);
270 p
->window_end_valid
= Qnil
;
273 XSETFASTINT (p
->last_point
, 0);
274 p
->frozen_window_start_p
= 0;
275 p
->height_fixed_p
= 0;
276 p
->last_cursor_off_p
= p
->cursor_off_p
= 0;
277 p
->left_margin_cols
= Qnil
;
278 p
->right_margin_cols
= Qnil
;
279 p
->left_fringe_width
= Qnil
;
280 p
->right_fringe_width
= Qnil
;
281 p
->fringes_outside_margins
= Qnil
;
282 p
->scroll_bar_width
= Qnil
;
283 p
->vertical_scroll_bar_type
= Qt
;
284 p
->overlay_arrow_bitmap
= 0;
290 DEFUN ("selected-window", Fselected_window
, Sselected_window
, 0, 0, 0,
291 doc
: /* Return the window that the cursor now appears in and commands apply to. */)
294 return selected_window
;
297 DEFUN ("minibuffer-window", Fminibuffer_window
, Sminibuffer_window
, 0, 1, 0,
298 doc
: /* Return the window used now for minibuffers.
299 If the optional argument FRAME is specified, return the minibuffer window
300 used by that frame. */)
305 frame
= selected_frame
;
306 CHECK_LIVE_FRAME (frame
);
307 return FRAME_MINIBUF_WINDOW (XFRAME (frame
));
310 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p
, Swindow_minibuffer_p
, 0, 1, 0,
311 doc
: /* Returns non-nil if WINDOW is a minibuffer window.
312 WINDOW defaults to the selected window. */)
316 struct window
*w
= decode_window (window
);
317 return MINI_WINDOW_P (w
) ? Qt
: Qnil
;
321 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p
,
322 Spos_visible_in_window_p
, 0, 3, 0,
323 doc
: /* Return t if position POS is currently on the frame in WINDOW.
324 Return nil if that position is scrolled vertically out of view.
325 If a character is only partially visible, nil is returned, unless the
326 optional argument PARTIALLY is non-nil.
327 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
329 If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,
330 return value is a list (X Y PARTIAL) where X and Y are the pixel relative
332 (pos
, window
, partially
)
333 Lisp_Object pos
, window
, partially
;
335 register struct window
*w
;
337 register struct buffer
*buf
;
339 Lisp_Object in_window
= Qnil
;
343 w
= decode_window (window
);
344 buf
= XBUFFER (w
->buffer
);
345 SET_TEXT_POS_FROM_MARKER (top
, w
->start
);
349 CHECK_NUMBER_COERCE_MARKER (pos
);
352 else if (w
== XWINDOW (selected_window
))
355 posint
= XMARKER (w
->pointm
)->charpos
;
357 /* If position is above window start or outside buffer boundaries,
358 or if window start is out of range, position is not visible. */
359 if (posint
>= CHARPOS (top
)
360 && posint
<= BUF_ZV (buf
)
361 && CHARPOS (top
) >= BUF_BEGV (buf
)
362 && CHARPOS (top
) <= BUF_ZV (buf
)
363 && pos_visible_p (w
, posint
, &fully_p
, &x
, &y
, NILP (partially
))
364 && (!NILP (partially
) || fully_p
))
367 if (!NILP (in_window
) && !NILP (partially
))
368 in_window
= Fcons (make_number (x
),
369 Fcons (make_number (y
),
370 Fcons (fully_p
? Qt
: Qnil
, Qnil
)));
375 static struct window
*
376 decode_window (window
)
377 register Lisp_Object window
;
380 return XWINDOW (selected_window
);
382 CHECK_LIVE_WINDOW (window
);
383 return XWINDOW (window
);
386 static struct window
*
387 decode_any_window (window
)
388 register Lisp_Object window
;
391 return XWINDOW (selected_window
);
393 CHECK_WINDOW (window
);
394 return XWINDOW (window
);
397 DEFUN ("window-buffer", Fwindow_buffer
, Swindow_buffer
, 0, 1, 0,
398 doc
: /* Return the buffer that WINDOW is displaying. */)
402 return decode_window (window
)->buffer
;
405 DEFUN ("window-height", Fwindow_height
, Swindow_height
, 0, 1, 0,
406 doc
: /* Return the number of lines in WINDOW (including its mode line). */)
410 return decode_any_window (window
)->total_lines
;
413 DEFUN ("window-width", Fwindow_width
, Swindow_width
, 0, 1, 0,
414 doc
: /* Return the number of display columns in WINDOW.
415 This is the width that is usable columns available for text in WINDOW.
416 If you want to find out how many columns WINDOW takes up,
417 use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */)
421 return make_number (window_box_text_cols (decode_any_window (window
)));
424 DEFUN ("window-hscroll", Fwindow_hscroll
, Swindow_hscroll
, 0, 1, 0,
425 doc
: /* Return the number of columns by which WINDOW is scrolled from left margin. */)
429 return decode_window (window
)->hscroll
;
432 DEFUN ("set-window-hscroll", Fset_window_hscroll
, Sset_window_hscroll
, 2, 2, 0,
433 doc
: /* Set number of columns WINDOW is scrolled from left margin to NCOL.
434 NCOL should be zero or positive.
436 Note that if `automatic-hscrolling' is non-nil, you cannot scroll the
437 window so that the location of point becomes invisible. */)
439 Lisp_Object window
, ncol
;
441 struct window
*w
= decode_window (window
);
445 hscroll
= max (0, XINT (ncol
));
447 /* Prevent redisplay shortcuts when changing the hscroll. */
448 if (XINT (w
->hscroll
) != hscroll
)
449 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
451 w
->hscroll
= make_number (hscroll
);
455 DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger
,
456 Swindow_redisplay_end_trigger
, 0, 1, 0,
457 doc
: /* Return WINDOW's redisplay end trigger value.
458 See `set-window-redisplay-end-trigger' for more information. */)
462 return decode_window (window
)->redisplay_end_trigger
;
465 DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger
,
466 Sset_window_redisplay_end_trigger
, 2, 2, 0,
467 doc
: /* Set WINDOW's redisplay end trigger value to VALUE.
468 VALUE should be a buffer position (typically a marker) or nil.
469 If it is a buffer position, then if redisplay in WINDOW reaches a position
470 beyond VALUE, the functions in `redisplay-end-trigger-functions' are called
471 with two arguments: WINDOW, and the end trigger value.
472 Afterwards the end-trigger value is reset to nil. */)
474 register Lisp_Object window
, value
;
476 register struct window
*w
;
478 w
= decode_window (window
);
479 w
->redisplay_end_trigger
= value
;
483 DEFUN ("window-edges", Fwindow_edges
, Swindow_edges
, 0, 1, 0,
484 doc
: /* Return a list of the edge coordinates of WINDOW.
485 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
486 RIGHT is one more than the rightmost column occupied by WINDOW,
487 and BOTTOM is one more than the bottommost row occupied by WINDOW.
488 The edges include the space used by the window's scroll bar,
489 display margins, fringes, header line, and mode line, if it has them.
490 To get the edges of the actual text area, use `window-inside-edges'. */)
494 register struct window
*w
= decode_any_window (window
);
496 return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w
)),
497 Fcons (make_number (WINDOW_TOP_EDGE_LINE (w
)),
498 Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w
)),
499 Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w
)),
503 DEFUN ("window-pixel-edges", Fwindow_pixel_edges
, Swindow_pixel_edges
, 0, 1, 0,
504 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
505 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
506 RIGHT is one more than the rightmost x position occupied by WINDOW,
507 and BOTTOM is one more than the bottommost y position occupied by WINDOW.
508 The pixel edges include the space used by the window's scroll bar,
509 display margins, fringes, header line, and mode line, if it has them.
510 To get the edges of the actual text area, use `window-inside-pixel-edges'. */)
514 register struct window
*w
= decode_any_window (window
);
516 return Fcons (make_number (WINDOW_LEFT_EDGE_X (w
)),
517 Fcons (make_number (WINDOW_TOP_EDGE_Y (w
)),
518 Fcons (make_number (WINDOW_RIGHT_EDGE_X (w
)),
519 Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w
)),
523 DEFUN ("window-inside-edges", Fwindow_inside_edges
, Swindow_inside_edges
, 0, 1, 0,
524 doc
: /* Return a list of the edge coordinates of WINDOW.
525 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
526 RIGHT is one more than the rightmost column used by text in WINDOW,
527 and BOTTOM is one more than the bottommost row used by text in WINDOW.
528 The inside edges do not include the space used by the window's scroll bar,
529 display margins, fringes, header line, and/or mode line. */)
533 register struct window
*w
= decode_any_window (window
);
535 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w
)
536 + WINDOW_LEFT_MARGIN_COLS (w
)
537 + WINDOW_LEFT_FRINGE_COLS (w
)),
538 make_number (WINDOW_TOP_EDGE_LINE (w
)
539 + WINDOW_HEADER_LINE_LINES (w
)),
540 make_number (WINDOW_RIGHT_EDGE_COL (w
)
541 - WINDOW_RIGHT_MARGIN_COLS (w
)
542 - WINDOW_RIGHT_FRINGE_COLS (w
)),
543 make_number (WINDOW_BOTTOM_EDGE_LINE (w
)
544 - WINDOW_MODE_LINE_LINES (w
)));
547 DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges
, Swindow_inside_pixel_edges
, 0, 1, 0,
548 doc
: /* Return a list of the edge coordinates of WINDOW.
549 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
550 RIGHT is one more than the rightmost x position used by text in WINDOW,
551 and BOTTOM is one more than the bottommost y position used by text in WINDOW.
552 The inside edges do not include the space used by the window's scroll bar,
553 display margins, fringes, header line, and/or mode line. */)
557 register struct window
*w
= decode_any_window (window
);
559 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w
)
560 + WINDOW_LEFT_MARGIN_WIDTH (w
)
561 + WINDOW_LEFT_FRINGE_WIDTH (w
)),
562 make_number (WINDOW_TOP_EDGE_Y (w
)
563 + WINDOW_HEADER_LINE_HEIGHT (w
)),
564 make_number (WINDOW_RIGHT_EDGE_X (w
)
565 - WINDOW_RIGHT_MARGIN_WIDTH (w
)
566 - WINDOW_RIGHT_FRINGE_WIDTH (w
)),
567 make_number (WINDOW_BOTTOM_EDGE_Y (w
)
568 - WINDOW_MODE_LINE_HEIGHT (w
)));
571 /* Test if the character at column *X, row *Y is within window W.
572 If it is not, return ON_NOTHING;
573 if it is in the window's text area,
574 set *x and *y to its location relative to the upper left corner
577 if it is on the window's modeline, return ON_MODE_LINE;
578 if it is on the border between the window and its right sibling,
579 return ON_VERTICAL_BORDER.
580 if it is on the window's top line, return ON_HEADER_LINE;
581 if it is in left or right fringe of the window,
582 return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y
583 to window-relative coordinates;
584 if it is in the marginal area to the left/right of the window,
585 return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y
586 to window-relative coordinates.
588 X and Y are frame relative pixel coordinates. */
590 static enum window_part
591 coordinates_in_window (w
, x
, y
)
592 register struct window
*w
;
595 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
596 int left_x
, right_x
, top_y
, bottom_y
;
597 enum window_part part
;
598 int ux
= FRAME_COLUMN_WIDTH (f
);
599 int x0
= WINDOW_LEFT_EDGE_X (w
);
600 int x1
= WINDOW_RIGHT_EDGE_X (w
);
601 /* The width of the area where the vertical line can be dragged.
602 (Between mode lines for instance. */
603 int grabbable_width
= ux
;
604 int lmargin_width
, rmargin_width
, text_left
, text_right
;
606 if (*x
< x0
|| *x
>= x1
)
609 /* In what's below, we subtract 1 when computing right_x because we
610 want the rightmost pixel, which is given by left_pixel+width-1. */
611 if (w
->pseudo_window_p
)
614 right_x
= WINDOW_TOTAL_WIDTH (w
) - 1;
615 top_y
= WINDOW_TOP_EDGE_Y (w
);
616 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
620 left_x
= WINDOW_BOX_LEFT_EDGE_X (w
);
621 right_x
= WINDOW_BOX_RIGHT_EDGE_X (w
) - 1;
622 top_y
= WINDOW_TOP_EDGE_Y (w
);
623 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
626 /* Outside any interesting row? */
627 if (*y
< top_y
|| *y
>= bottom_y
)
630 /* On the mode line or header line? If it's near the start of
631 the mode or header line of window that's has a horizontal
632 sibling, say it's on the vertical line. That's to be able
633 to resize windows horizontally in case we're using toolkit
636 if (WINDOW_WANTS_MODELINE_P (w
)
637 && *y
>= bottom_y
- CURRENT_MODE_LINE_HEIGHT (w
))
641 header_vertical_border_check
:
642 /* We're somewhere on the mode line. We consider the place
643 between mode lines of horizontally adjacent mode lines
644 as the vertical border. If scroll bars on the left,
645 return the right window. */
646 if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w
)
647 || WINDOW_RIGHTMOST_P (w
))
649 if (!WINDOW_LEFTMOST_P (w
) && abs (*x
- x0
) < grabbable_width
)
650 return ON_VERTICAL_BORDER
;
654 if (abs (*x
- x1
) < grabbable_width
)
655 return ON_VERTICAL_BORDER
;
658 /* Convert X and Y to window relative coordinates.
659 Mode line starts at left edge of window. */
665 if (WINDOW_WANTS_HEADER_LINE_P (w
)
666 && *y
< top_y
+ CURRENT_HEADER_LINE_HEIGHT (w
))
668 part
= ON_HEADER_LINE
;
669 goto header_vertical_border_check
;
672 /* Outside any interesting column? */
673 if (*x
< left_x
|| *x
> right_x
)
676 lmargin_width
= window_box_width (w
, LEFT_MARGIN_AREA
);
677 rmargin_width
= window_box_width (w
, RIGHT_MARGIN_AREA
);
679 text_left
= window_box_left (w
, TEXT_AREA
);
680 text_right
= text_left
+ window_box_width (w
, TEXT_AREA
);
682 if (FRAME_WINDOW_P (f
))
684 if (!w
->pseudo_window_p
685 && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w
)
686 && !WINDOW_RIGHTMOST_P (w
)
687 && (abs (*x
- right_x
) < grabbable_width
))
688 return ON_VERTICAL_BORDER
;
692 /* Need to say "*x > right_x" rather than >=, since on character
693 terminals, the vertical line's x coordinate is right_x. */
694 if (!w
->pseudo_window_p
695 && !WINDOW_RIGHTMOST_P (w
)
696 && *x
> right_x
- ux
)
698 /* On the border on the right side of the window? Assume that
699 this area begins at RIGHT_X minus a canonical char width. */
700 return ON_VERTICAL_BORDER
;
706 if (lmargin_width
> 0
707 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
708 ? (*x
>= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
))
709 : (*x
< left_x
+ lmargin_width
)))
712 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
713 *x
-= WINDOW_LEFT_FRINGE_WIDTH (w
);
715 return ON_LEFT_MARGIN
;
718 /* Convert X and Y to window-relative pixel coordinates. */
721 return ON_LEFT_FRINGE
;
724 if (*x
>= text_right
)
726 if (rmargin_width
> 0
727 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
728 ? (*x
< right_x
- WINDOW_RIGHT_FRINGE_WIDTH (w
))
729 : (*x
>= right_x
- rmargin_width
)))
732 if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
733 *x
-= WINDOW_RIGHT_FRINGE_WIDTH (w
);
735 return ON_RIGHT_MARGIN
;
738 /* Convert X and Y to window-relative pixel coordinates. */
739 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
741 return ON_RIGHT_FRINGE
;
744 /* Everything special ruled out - must be on text area */
745 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
751 DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p
,
752 Scoordinates_in_window_p
, 2, 2, 0,
753 doc
: /* Return non-nil if COORDINATES are in WINDOW.
754 COORDINATES is a cons of the form (X . Y), X and Y being distances
755 measured in characters from the upper-left corner of the frame.
756 \(0 . 0) denotes the character in the upper left corner of the
758 If COORDINATES are in the text portion of WINDOW,
759 the coordinates relative to the window are returned.
760 If they are in the mode line of WINDOW, `mode-line' is returned.
761 If they are in the top mode line of WINDOW, `header-line' is returned.
762 If they are in the left fringe of WINDOW, `left-fringe' is returned.
763 If they are in the right fringe of WINDOW, `right-fringe' is returned.
764 If they are on the border between WINDOW and its right sibling,
765 `vertical-line' is returned.
766 If they are in the windows's left or right marginal areas, `left-margin'\n\
767 or `right-margin' is returned. */)
768 (coordinates
, window
)
769 register Lisp_Object coordinates
, window
;
776 CHECK_WINDOW (window
);
777 w
= XWINDOW (window
);
778 f
= XFRAME (w
->frame
);
779 CHECK_CONS (coordinates
);
780 lx
= Fcar (coordinates
);
781 ly
= Fcdr (coordinates
);
782 CHECK_NUMBER_OR_FLOAT (lx
);
783 CHECK_NUMBER_OR_FLOAT (ly
);
784 x
= FRAME_PIXEL_X_FROM_CANON_X (f
, lx
);
785 y
= FRAME_PIXEL_Y_FROM_CANON_Y (f
, ly
);
787 switch (coordinates_in_window (w
, &x
, &y
))
793 /* X and Y are now window relative pixel coordinates. Convert
794 them to canonical char units before returning them. */
795 return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f
, x
),
796 FRAME_CANON_Y_FROM_PIXEL_Y (f
, y
));
801 case ON_VERTICAL_BORDER
:
802 return Qvertical_line
;
810 case ON_RIGHT_FRINGE
:
811 return Qright_fringe
;
816 case ON_RIGHT_MARGIN
:
817 return Qright_margin
;
825 /* Callback for foreach_window, used in window_from_coordinates.
826 Check if window W contains coordinates specified by USER_DATA which
827 is actually a pointer to a struct check_window_data CW.
829 Check if window W contains coordinates *CW->x and *CW->y. If it
830 does, return W in *CW->window, as Lisp_Object, and return in
831 *CW->part the part of the window under coordinates *X,*Y. Return
832 zero from this function to stop iterating over windows. */
834 struct check_window_data
838 enum window_part
*part
;
842 check_window_containing (w
, user_data
)
846 struct check_window_data
*cw
= (struct check_window_data
*) user_data
;
847 enum window_part found
;
850 found
= coordinates_in_window (w
, cw
->x
, cw
->y
);
851 if (found
!= ON_NOTHING
)
854 XSETWINDOW (*cw
->window
, w
);
862 /* Find the window containing frame-relative pixel position X/Y and
863 return it as a Lisp_Object.
865 If X, Y is on one of the window's special `window_part' elements,
866 set *PART to the id of that element, and return X and Y converted
867 to window relative coordinates in WX and WY.
869 If there is no window under X, Y return nil and leave *PART
870 unmodified. TOOL_BAR_P non-zero means detect tool-bar windows.
872 This function was previously implemented with a loop cycling over
873 windows with Fnext_window, and starting with the frame's selected
874 window. It turned out that this doesn't work with an
875 implementation of next_window using Vwindow_list, because
876 FRAME_SELECTED_WINDOW (F) is not always contained in the window
877 tree of F when this function is called asynchronously from
878 note_mouse_highlight. The original loop didn't terminate in this
882 window_from_coordinates (f
, x
, y
, part
, wx
, wy
, tool_bar_p
)
885 enum window_part
*part
;
890 struct check_window_data cw
;
891 enum window_part dummy
;
897 cw
.window
= &window
, cw
.x
= &x
, cw
.y
= &y
; cw
.part
= part
;
898 foreach_window (f
, check_window_containing
, &cw
);
900 /* If not found above, see if it's in the tool bar window, if a tool
904 && WINDOWP (f
->tool_bar_window
)
905 && WINDOW_TOTAL_LINES (XWINDOW (f
->tool_bar_window
)) > 0
906 && (coordinates_in_window (XWINDOW (f
->tool_bar_window
), &x
, &y
)
910 window
= f
->tool_bar_window
;
919 DEFUN ("window-at", Fwindow_at
, Swindow_at
, 2, 3, 0,
920 doc
: /* Return window containing coordinates X and Y on FRAME.
921 If omitted, FRAME defaults to the currently selected frame.
922 The top left corner of the frame is considered to be row 0,
925 Lisp_Object x
, y
, frame
;
930 frame
= selected_frame
;
931 CHECK_LIVE_FRAME (frame
);
934 /* Check that arguments are integers or floats. */
935 CHECK_NUMBER_OR_FLOAT (x
);
936 CHECK_NUMBER_OR_FLOAT (y
);
938 return window_from_coordinates (f
,
939 FRAME_PIXEL_X_FROM_CANON_X (f
, x
),
940 FRAME_PIXEL_Y_FROM_CANON_Y (f
, y
),
944 DEFUN ("window-point", Fwindow_point
, Swindow_point
, 0, 1, 0,
945 doc
: /* Return current value of point in WINDOW.
946 For a nonselected window, this is the value point would have
947 if that window were selected.
949 Note that, when WINDOW is the selected window and its buffer
950 is also currently selected, the value returned is the same as (point).
951 It would be more strictly correct to return the `top-level' value
952 of point, outside of any save-excursion forms.
953 But that is hard to define. */)
957 register struct window
*w
= decode_window (window
);
959 if (w
== XWINDOW (selected_window
)
960 && current_buffer
== XBUFFER (w
->buffer
))
962 return Fmarker_position (w
->pointm
);
965 DEFUN ("window-start", Fwindow_start
, Swindow_start
, 0, 1, 0,
966 doc
: /* Return position at which display currently starts in WINDOW.
967 This is updated by redisplay or by calling `set-window-start'. */)
971 return Fmarker_position (decode_window (window
)->start
);
974 /* This is text temporarily removed from the doc string below.
976 This function returns nil if the position is not currently known.
977 That happens when redisplay is preempted and doesn't finish.
978 If in that case you want to compute where the end of the window would
979 have been if redisplay had finished, do this:
981 (goto-char (window-start window))
982 (vertical-motion (1- (window-height window)) window)
985 DEFUN ("window-end", Fwindow_end
, Swindow_end
, 0, 2, 0,
986 doc
: /* Return position at which display currently ends in WINDOW.
987 This is updated by redisplay, when it runs to completion.
988 Simply changing the buffer text or setting `window-start'
989 does not update this value.
990 If UPDATE is non-nil, compute the up-to-date position
991 if it isn't already recorded. */)
993 Lisp_Object window
, update
;
996 struct window
*w
= decode_window (window
);
1002 #if 0 /* This change broke some things. We should make it later. */
1003 /* If we don't know the end position, return nil.
1004 The user can compute it with vertical-motion if he wants to.
1005 It would be nicer to do it automatically,
1006 but that's so slow that it would probably bother people. */
1007 if (NILP (w
->window_end_valid
))
1012 && ! (! NILP (w
->window_end_valid
)
1013 && XFASTINT (w
->last_modified
) >= MODIFF
))
1015 struct text_pos startp
;
1017 struct buffer
*old_buffer
= NULL
, *b
= XBUFFER (buf
);
1019 /* In case W->start is out of the range, use something
1020 reasonable. This situation occurred when loading a file with
1021 `-l' containing a call to `rmail' with subsequent other
1022 commands. At the end, W->start happened to be BEG, while
1023 rmail had already narrowed the buffer. */
1024 if (XMARKER (w
->start
)->charpos
< BEGV
)
1025 SET_TEXT_POS (startp
, BEGV
, BEGV_BYTE
);
1026 else if (XMARKER (w
->start
)->charpos
> ZV
)
1027 SET_TEXT_POS (startp
, ZV
, ZV_BYTE
);
1029 SET_TEXT_POS_FROM_MARKER (startp
, w
->start
);
1031 /* Cannot use Fvertical_motion because that function doesn't
1032 cope with variable-height lines. */
1033 if (b
!= current_buffer
)
1035 old_buffer
= current_buffer
;
1036 set_buffer_internal (b
);
1039 start_display (&it
, w
, startp
);
1040 move_it_vertically (&it
, window_box_height (w
));
1041 if (it
.current_y
< it
.last_visible_y
)
1042 move_it_past_eol (&it
);
1043 value
= make_number (IT_CHARPOS (it
));
1046 set_buffer_internal (old_buffer
);
1049 XSETINT (value
, BUF_Z (XBUFFER (buf
)) - XFASTINT (w
->window_end_pos
));
1054 DEFUN ("set-window-point", Fset_window_point
, Sset_window_point
, 2, 2, 0,
1055 doc
: /* Make point value in WINDOW be at position POS in WINDOW's buffer. */)
1057 Lisp_Object window
, pos
;
1059 register struct window
*w
= decode_window (window
);
1061 CHECK_NUMBER_COERCE_MARKER (pos
);
1062 if (w
== XWINDOW (selected_window
)
1063 && XBUFFER (w
->buffer
) == current_buffer
)
1066 set_marker_restricted (w
->pointm
, pos
, w
->buffer
);
1068 /* We have to make sure that redisplay updates the window to show
1069 the new value of point. */
1070 if (!EQ (window
, selected_window
))
1071 ++windows_or_buffers_changed
;
1076 DEFUN ("set-window-start", Fset_window_start
, Sset_window_start
, 2, 3, 0,
1077 doc
: /* Make display in WINDOW start at position POS in WINDOW's buffer.
1078 Optional third arg NOFORCE non-nil inhibits next redisplay
1079 from overriding motion of point in order to display at this exact start. */)
1080 (window
, pos
, noforce
)
1081 Lisp_Object window
, pos
, noforce
;
1083 register struct window
*w
= decode_window (window
);
1085 CHECK_NUMBER_COERCE_MARKER (pos
);
1086 set_marker_restricted (w
->start
, pos
, w
->buffer
);
1087 /* this is not right, but much easier than doing what is right. */
1088 w
->start_at_line_beg
= Qnil
;
1090 w
->force_start
= Qt
;
1091 w
->update_mode_line
= Qt
;
1092 XSETFASTINT (w
->last_modified
, 0);
1093 XSETFASTINT (w
->last_overlay_modified
, 0);
1094 if (!EQ (window
, selected_window
))
1095 windows_or_buffers_changed
++;
1100 DEFUN ("window-dedicated-p", Fwindow_dedicated_p
, Swindow_dedicated_p
,
1102 doc
: /* Return WINDOW's dedicated object, usually t or nil.
1103 See also `set-window-dedicated-p'. */)
1107 return decode_window (window
)->dedicated
;
1110 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p
,
1111 Sset_window_dedicated_p
, 2, 2, 0,
1112 doc
: /* Control whether WINDOW is dedicated to the buffer it displays.
1113 If it is dedicated, Emacs will not automatically change
1114 which buffer appears in it.
1115 The second argument is the new value for the dedication flag;
1116 non-nil means yes. */)
1118 Lisp_Object window
, arg
;
1120 register struct window
*w
= decode_window (window
);
1124 return w
->dedicated
;
1127 DEFUN ("window-display-table", Fwindow_display_table
, Swindow_display_table
,
1129 doc
: /* Return the display-table that WINDOW is using. */)
1133 return decode_window (window
)->display_table
;
1136 /* Get the display table for use on window W. This is either W's
1137 display table or W's buffer's display table. Ignore the specified
1138 tables if they are not valid; if no valid table is specified,
1141 struct Lisp_Char_Table
*
1142 window_display_table (w
)
1145 struct Lisp_Char_Table
*dp
= NULL
;
1147 if (DISP_TABLE_P (w
->display_table
))
1148 dp
= XCHAR_TABLE (w
->display_table
);
1149 else if (BUFFERP (w
->buffer
))
1151 struct buffer
*b
= XBUFFER (w
->buffer
);
1153 if (DISP_TABLE_P (b
->display_table
))
1154 dp
= XCHAR_TABLE (b
->display_table
);
1155 else if (DISP_TABLE_P (Vstandard_display_table
))
1156 dp
= XCHAR_TABLE (Vstandard_display_table
);
1162 DEFUN ("set-window-display-table", Fset_window_display_table
, Sset_window_display_table
, 2, 2, 0,
1163 doc
: /* Set WINDOW's display-table to TABLE. */)
1165 register Lisp_Object window
, table
;
1167 register struct window
*w
;
1169 w
= decode_window (window
);
1170 w
->display_table
= table
;
1174 /* Record info on buffer window w is displaying
1175 when it is about to cease to display that buffer. */
1178 register struct window
*w
;
1185 if (b
!= XMARKER (w
->pointm
)->buffer
)
1189 if (w
== XWINDOW (selected_window
)
1190 || ! EQ (buf
, XWINDOW (selected_window
)->buffer
))
1191 /* Do this except when the selected window's buffer
1192 is being removed from some other window. */
1194 /* last_window_start records the start position that this buffer
1195 had in the last window to be disconnected from it.
1196 Now that this statement is unconditional,
1197 it is possible for the buffer to be displayed in the
1198 selected window, while last_window_start reflects another
1199 window which was recently showing the same buffer.
1200 Some people might say that might be a good thing. Let's see. */
1201 b
->last_window_start
= marker_position (w
->start
);
1203 /* Point in the selected window's buffer
1204 is actually stored in that buffer, and the window's pointm isn't used.
1205 So don't clobber point in that buffer. */
1206 if (! EQ (buf
, XWINDOW (selected_window
)->buffer
)
1207 /* This line helps to fix Horsley's testbug.el bug. */
1208 && !(WINDOWP (b
->last_selected_window
)
1209 && w
!= XWINDOW (b
->last_selected_window
)
1210 && EQ (buf
, XWINDOW (b
->last_selected_window
)->buffer
)))
1211 temp_set_point_both (b
,
1212 clip_to_bounds (BUF_BEGV (b
),
1213 XMARKER (w
->pointm
)->charpos
,
1215 clip_to_bounds (BUF_BEGV_BYTE (b
),
1216 marker_byte_position (w
->pointm
),
1219 if (WINDOWP (b
->last_selected_window
)
1220 && w
== XWINDOW (b
->last_selected_window
))
1221 b
->last_selected_window
= Qnil
;
1224 /* Put replacement into the window structure in place of old. */
1226 replace_window (old
, replacement
)
1227 Lisp_Object old
, replacement
;
1229 register Lisp_Object tem
;
1230 register struct window
*o
= XWINDOW (old
), *p
= XWINDOW (replacement
);
1232 /* If OLD is its frame's root_window, then replacement is the new
1233 root_window for that frame. */
1235 if (EQ (old
, FRAME_ROOT_WINDOW (XFRAME (o
->frame
))))
1236 FRAME_ROOT_WINDOW (XFRAME (o
->frame
)) = replacement
;
1238 p
->left_col
= o
->left_col
;
1239 p
->top_line
= o
->top_line
;
1240 p
->total_cols
= o
->total_cols
;
1241 p
->total_lines
= o
->total_lines
;
1242 p
->desired_matrix
= p
->current_matrix
= 0;
1244 bzero (&p
->cursor
, sizeof (p
->cursor
));
1245 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
1246 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
1247 p
->phys_cursor_type
= -1;
1248 p
->phys_cursor_width
= -1;
1249 p
->must_be_updated_p
= 0;
1250 p
->pseudo_window_p
= 0;
1251 XSETFASTINT (p
->window_end_vpos
, 0);
1252 XSETFASTINT (p
->window_end_pos
, 0);
1253 p
->window_end_valid
= Qnil
;
1254 p
->frozen_window_start_p
= 0;
1255 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
1257 p
->next
= tem
= o
->next
;
1259 XWINDOW (tem
)->prev
= replacement
;
1261 p
->prev
= tem
= o
->prev
;
1263 XWINDOW (tem
)->next
= replacement
;
1265 p
->parent
= tem
= o
->parent
;
1268 if (EQ (XWINDOW (tem
)->vchild
, old
))
1269 XWINDOW (tem
)->vchild
= replacement
;
1270 if (EQ (XWINDOW (tem
)->hchild
, old
))
1271 XWINDOW (tem
)->hchild
= replacement
;
1274 /*** Here, if replacement is a vertical combination
1275 and so is its new parent, we should make replacement's
1276 children be children of that parent instead. ***/
1279 DEFUN ("delete-window", Fdelete_window
, Sdelete_window
, 0, 1, "",
1280 doc
: /* Remove WINDOW from the display. Default is selected window. */)
1282 register Lisp_Object window
;
1284 delete_window (window
);
1286 if (! NILP (Vwindow_configuration_change_hook
)
1287 && ! NILP (Vrun_hooks
))
1288 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
1294 delete_window (window
)
1295 register Lisp_Object window
;
1297 register Lisp_Object tem
, parent
, sib
;
1298 register struct window
*p
;
1299 register struct window
*par
;
1302 /* Because this function is called by other C code on non-leaf
1303 windows, the CHECK_LIVE_WINDOW macro would choke inappropriately,
1304 so we can't decode_window here. */
1306 window
= selected_window
;
1308 CHECK_WINDOW (window
);
1309 p
= XWINDOW (window
);
1311 /* It's okay to delete an already-deleted window. */
1312 if (NILP (p
->buffer
)
1314 && NILP (p
->vchild
))
1319 error ("Attempt to delete minibuffer or sole ordinary window");
1320 par
= XWINDOW (parent
);
1322 windows_or_buffers_changed
++;
1323 Vwindow_list
= Qnil
;
1324 f
= XFRAME (WINDOW_FRAME (p
));
1325 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
1327 /* Are we trying to delete any frame's selected window? */
1329 Lisp_Object swindow
, pwindow
;
1331 /* See if the frame's selected window is either WINDOW
1332 or any subwindow of it, by finding all that window's parents
1333 and comparing each one with WINDOW. */
1334 swindow
= FRAME_SELECTED_WINDOW (f
);
1339 while (!NILP (pwindow
))
1341 if (EQ (window
, pwindow
))
1343 pwindow
= XWINDOW (pwindow
)->parent
;
1346 /* If the window being deleted is not a parent of SWINDOW,
1347 then SWINDOW is ok as the new selected window. */
1348 if (!EQ (window
, pwindow
))
1350 /* Otherwise, try another window for SWINDOW. */
1351 swindow
= Fnext_window (swindow
, Qlambda
, Qnil
);;
1353 /* If we get back to the frame's selected window,
1354 it means there was no acceptable alternative,
1355 so we cannot delete. */
1356 if (EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1357 error ("Cannot delete window");
1360 /* If we need to change SWINDOW, do it. */
1361 if (! EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1363 /* If we're about to delete the selected window on the
1364 selected frame, then we should use Fselect_window to select
1365 the new window. On the other hand, if we're about to
1366 delete the selected window on any other frame, we shouldn't do
1367 anything but set the frame's selected_window slot. */
1368 if (EQ (FRAME_SELECTED_WINDOW (f
), selected_window
))
1369 Fselect_window (swindow
, Qnil
);
1371 FRAME_SELECTED_WINDOW (f
) = swindow
;
1376 /* tem is null for dummy parent windows
1377 (which have inferiors but not any contents themselves) */
1381 unchain_marker (XMARKER (p
->pointm
));
1382 unchain_marker (XMARKER (p
->start
));
1385 /* Free window glyph matrices. It is sure that they are allocated
1386 again when ADJUST_GLYPHS is called. Block input so that expose
1387 events and other events that access glyph matrices are not
1388 processed while we are changing them. */
1390 free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f
)));
1394 XWINDOW (tem
)->prev
= p
->prev
;
1398 XWINDOW (tem
)->next
= p
->next
;
1400 if (EQ (window
, par
->hchild
))
1401 par
->hchild
= p
->next
;
1402 if (EQ (window
, par
->vchild
))
1403 par
->vchild
= p
->next
;
1405 /* Find one of our siblings to give our space to. */
1409 /* If p gives its space to its next sibling, that sibling needs
1410 to have its top/left side pulled back to where p's is.
1411 set_window_{height,width} will re-position the sibling's
1414 XWINDOW (sib
)->top_line
= p
->top_line
;
1415 XWINDOW (sib
)->left_col
= p
->left_col
;
1418 /* Stretch that sibling. */
1419 if (!NILP (par
->vchild
))
1420 set_window_height (sib
,
1421 XFASTINT (XWINDOW (sib
)->total_lines
) + XFASTINT (p
->total_lines
),
1423 if (!NILP (par
->hchild
))
1424 set_window_width (sib
,
1425 XFASTINT (XWINDOW (sib
)->total_cols
) + XFASTINT (p
->total_cols
),
1428 /* If parent now has only one child,
1429 put the child into the parent's place. */
1433 if (NILP (XWINDOW (tem
)->next
))
1434 replace_window (parent
, tem
);
1436 /* Since we may be deleting combination windows, we must make sure that
1437 not only p but all its children have been marked as deleted. */
1438 if (! NILP (p
->hchild
))
1439 delete_all_subwindows (XWINDOW (p
->hchild
));
1440 else if (! NILP (p
->vchild
))
1441 delete_all_subwindows (XWINDOW (p
->vchild
));
1443 /* Mark this window as deleted. */
1444 p
->buffer
= p
->hchild
= p
->vchild
= Qnil
;
1446 /* Adjust glyph matrices. */
1453 /***********************************************************************
1455 ***********************************************************************/
1457 /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
1458 pointer. This is a callback function for foreach_window, used in
1459 function window_list. */
1462 add_window_to_list (w
, user_data
)
1466 Lisp_Object
*list
= (Lisp_Object
*) user_data
;
1468 XSETWINDOW (window
, w
);
1469 *list
= Fcons (window
, *list
);
1474 /* Return a list of all windows, for use by next_window. If
1475 Vwindow_list is a list, return that list. Otherwise, build a new
1476 list, cache it in Vwindow_list, and return that. */
1481 if (!CONSP (Vwindow_list
))
1485 Vwindow_list
= Qnil
;
1486 for (tail
= Vframe_list
; CONSP (tail
); tail
= XCDR (tail
))
1488 Lisp_Object args
[2];
1490 /* We are visiting windows in canonical order, and add
1491 new windows at the front of args[1], which means we
1492 have to reverse this list at the end. */
1494 foreach_window (XFRAME (XCAR (tail
)), add_window_to_list
, &args
[1]);
1495 args
[0] = Vwindow_list
;
1496 args
[1] = Fnreverse (args
[1]);
1497 Vwindow_list
= Fnconc (2, args
);
1501 return Vwindow_list
;
1505 /* Value is non-zero if WINDOW satisfies the constraints given by
1506 OWINDOW, MINIBUF and ALL_FRAMES.
1508 MINIBUF t means WINDOW may be minibuffer windows.
1509 `lambda' means WINDOW may not be a minibuffer window.
1510 a window means a specific minibuffer window
1512 ALL_FRAMES t means search all frames,
1513 nil means search just current frame,
1514 `visible' means search just visible frames,
1515 0 means search visible and iconified frames,
1516 a window means search the frame that window belongs to,
1517 a frame means consider windows on that frame, only. */
1520 candidate_window_p (window
, owindow
, minibuf
, all_frames
)
1521 Lisp_Object window
, owindow
, minibuf
, all_frames
;
1523 struct window
*w
= XWINDOW (window
);
1524 struct frame
*f
= XFRAME (w
->frame
);
1525 int candidate_p
= 1;
1527 if (!BUFFERP (w
->buffer
))
1529 else if (MINI_WINDOW_P (w
)
1530 && (EQ (minibuf
, Qlambda
)
1531 || (WINDOWP (minibuf
) && !EQ (minibuf
, window
))))
1533 /* If MINIBUF is `lambda' don't consider any mini-windows.
1534 If it is a window, consider only that one. */
1537 else if (EQ (all_frames
, Qt
))
1539 else if (NILP (all_frames
))
1541 xassert (WINDOWP (owindow
));
1542 candidate_p
= EQ (w
->frame
, XWINDOW (owindow
)->frame
);
1544 else if (EQ (all_frames
, Qvisible
))
1546 FRAME_SAMPLE_VISIBILITY (f
);
1547 candidate_p
= FRAME_VISIBLE_P (f
);
1549 else if (INTEGERP (all_frames
) && XINT (all_frames
) == 0)
1551 FRAME_SAMPLE_VISIBILITY (f
);
1552 candidate_p
= FRAME_VISIBLE_P (f
) || FRAME_ICONIFIED_P (f
);
1554 else if (WINDOWP (all_frames
))
1555 candidate_p
= (EQ (FRAME_MINIBUF_WINDOW (f
), all_frames
)
1556 || EQ (XWINDOW (all_frames
)->frame
, w
->frame
)
1557 || EQ (XWINDOW (all_frames
)->frame
, FRAME_FOCUS_FRAME (f
)));
1558 else if (FRAMEP (all_frames
))
1559 candidate_p
= EQ (all_frames
, w
->frame
);
1565 /* Decode arguments as allowed by Fnext_window, Fprevious_window, and
1566 Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
1570 decode_next_window_args (window
, minibuf
, all_frames
)
1571 Lisp_Object
*window
, *minibuf
, *all_frames
;
1574 *window
= selected_window
;
1576 CHECK_LIVE_WINDOW (*window
);
1578 /* MINIBUF nil may or may not include minibuffers. Decide if it
1580 if (NILP (*minibuf
))
1581 *minibuf
= minibuf_level
? minibuf_window
: Qlambda
;
1582 else if (!EQ (*minibuf
, Qt
))
1585 /* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
1586 => count none of them, or a specific minibuffer window (the
1587 active one) to count. */
1589 /* ALL_FRAMES nil doesn't specify which frames to include. */
1590 if (NILP (*all_frames
))
1591 *all_frames
= (!EQ (*minibuf
, Qlambda
)
1592 ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window
)->frame
))
1594 else if (EQ (*all_frames
, Qvisible
))
1596 else if (XFASTINT (*all_frames
) == 0)
1598 else if (FRAMEP (*all_frames
))
1600 else if (!EQ (*all_frames
, Qt
))
1603 /* Now *ALL_FRAMES is t meaning search all frames, nil meaning
1604 search just current frame, `visible' meaning search just visible
1605 frames, 0 meaning search visible and iconified frames, or a
1606 window, meaning search the frame that window belongs to, or a
1607 frame, meaning consider windows on that frame, only. */
1611 /* Return the next or previous window of WINDOW in canonical ordering
1612 of windows. NEXT_P non-zero means return the next window. See the
1613 documentation string of next-window for the meaning of MINIBUF and
1617 next_window (window
, minibuf
, all_frames
, next_p
)
1618 Lisp_Object window
, minibuf
, all_frames
;
1621 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1623 /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
1624 return the first window on the frame. */
1625 if (FRAMEP (all_frames
)
1626 && !EQ (all_frames
, XWINDOW (window
)->frame
))
1627 return Fframe_first_window (all_frames
);
1633 /* Find WINDOW in the list of all windows. */
1634 list
= Fmemq (window
, window_list ());
1636 /* Scan forward from WINDOW to the end of the window list. */
1638 for (list
= XCDR (list
); CONSP (list
); list
= XCDR (list
))
1639 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1642 /* Scan from the start of the window list up to WINDOW. */
1644 for (list
= Vwindow_list
;
1645 CONSP (list
) && !EQ (XCAR (list
), window
);
1647 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1651 window
= XCAR (list
);
1655 Lisp_Object candidate
, list
;
1657 /* Scan through the list of windows for candidates. If there are
1658 candidate windows in front of WINDOW, the last one of these
1659 is the one we want. If there are candidates following WINDOW
1660 in the list, again the last one of these is the one we want. */
1662 for (list
= window_list (); CONSP (list
); list
= XCDR (list
))
1664 if (EQ (XCAR (list
), window
))
1666 if (WINDOWP (candidate
))
1669 else if (candidate_window_p (XCAR (list
), window
, minibuf
,
1671 candidate
= XCAR (list
);
1674 if (WINDOWP (candidate
))
1682 DEFUN ("next-window", Fnext_window
, Snext_window
, 0, 3, 0,
1683 doc
: /* Return next window after WINDOW in canonical ordering of windows.
1684 If omitted, WINDOW defaults to the selected window.
1686 Optional second arg MINIBUF t means count the minibuffer window even
1687 if not active. MINIBUF nil or omitted means count the minibuffer iff
1688 it is active. MINIBUF neither t nor nil means not to count the
1689 minibuffer even if it is active.
1691 Several frames may share a single minibuffer; if the minibuffer
1692 counts, all windows on all frames that share that minibuffer count
1693 too. Therefore, `next-window' can be used to iterate through the
1694 set of windows even when the minibuffer is on another frame. If the
1695 minibuffer does not count, only windows from WINDOW's frame count.
1697 Optional third arg ALL-FRAMES t means include windows on all frames.
1698 ALL-FRAMES nil or omitted means cycle within the frames as specified
1699 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1700 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1701 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1702 Anything else means restrict to WINDOW's frame.
1704 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1705 `next-window' to iterate through the entire cycle of acceptable
1706 windows, eventually ending up back at the window you started with.
1707 `previous-window' traverses the same cycle, in the reverse order. */)
1708 (window
, minibuf
, all_frames
)
1709 Lisp_Object window
, minibuf
, all_frames
;
1711 return next_window (window
, minibuf
, all_frames
, 1);
1715 DEFUN ("previous-window", Fprevious_window
, Sprevious_window
, 0, 3, 0,
1716 doc
: /* Return the window preceding WINDOW in canonical ordering of windows.
1717 If omitted, WINDOW defaults to the selected window.
1719 Optional second arg MINIBUF t means count the minibuffer window even
1720 if not active. MINIBUF nil or omitted means count the minibuffer iff
1721 it is active. MINIBUF neither t nor nil means not to count the
1722 minibuffer even if it is active.
1724 Several frames may share a single minibuffer; if the minibuffer
1725 counts, all windows on all frames that share that minibuffer count
1726 too. Therefore, `previous-window' can be used to iterate through
1727 the set of windows even when the minibuffer is on another frame. If
1728 the minibuffer does not count, only windows from WINDOW's frame count
1730 Optional third arg ALL-FRAMES t means include windows on all frames.
1731 ALL-FRAMES nil or omitted means cycle within the frames as specified
1732 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1733 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1734 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1735 Anything else means restrict to WINDOW's frame.
1737 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1738 `previous-window' to iterate through the entire cycle of acceptable
1739 windows, eventually ending up back at the window you started with.
1740 `next-window' traverses the same cycle, in the reverse order. */)
1741 (window
, minibuf
, all_frames
)
1742 Lisp_Object window
, minibuf
, all_frames
;
1744 return next_window (window
, minibuf
, all_frames
, 0);
1748 DEFUN ("other-window", Fother_window
, Sother_window
, 1, 2, "p",
1749 doc
: /* Select the ARG'th different window on this frame.
1750 All windows on current frame are arranged in a cyclic order.
1751 This command selects the window ARG steps away in that order.
1752 A negative ARG moves in the opposite order. If the optional second
1753 argument ALL_FRAMES is non-nil, cycle through all frames. */)
1755 Lisp_Object arg
, all_frames
;
1761 window
= selected_window
;
1763 for (i
= XINT (arg
); i
> 0; --i
)
1764 window
= Fnext_window (window
, Qnil
, all_frames
);
1766 window
= Fprevious_window (window
, Qnil
, all_frames
);
1768 Fselect_window (window
, Qnil
);
1773 DEFUN ("window-list", Fwindow_list
, Swindow_list
, 0, 3, 0,
1774 doc
: /* Return a list of windows on FRAME, starting with WINDOW.
1775 FRAME nil or omitted means use the selected frame.
1776 WINDOW nil or omitted means use the selected window.
1777 MINIBUF t means include the minibuffer window, even if it isn't active.
1778 MINIBUF nil or omitted means include the minibuffer window only
1780 MINIBUF neither nil nor t means never include the minibuffer window. */)
1781 (frame
, minibuf
, window
)
1782 Lisp_Object frame
, minibuf
, window
;
1785 window
= selected_window
;
1787 frame
= selected_frame
;
1789 if (!EQ (frame
, XWINDOW (window
)->frame
))
1790 error ("Window is on a different frame");
1792 return window_list_1 (window
, minibuf
, frame
);
1796 /* Return a list of windows in canonical ordering. Arguments are like
1797 for `next-window'. */
1800 window_list_1 (window
, minibuf
, all_frames
)
1801 Lisp_Object window
, minibuf
, all_frames
;
1803 Lisp_Object tail
, list
;
1805 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1808 for (tail
= window_list (); CONSP (tail
); tail
= XCDR (tail
))
1809 if (candidate_window_p (XCAR (tail
), window
, minibuf
, all_frames
))
1810 list
= Fcons (XCAR (tail
), list
);
1812 return Fnreverse (list
);
1817 /* Look at all windows, performing an operation specified by TYPE
1819 If FRAMES is Qt, look at all frames;
1820 Qnil, look at just the selected frame;
1821 Qvisible, look at visible frames;
1822 a frame, just look at windows on that frame.
1823 If MINI is non-zero, perform the operation on minibuffer windows too. */
1828 GET_BUFFER_WINDOW
, /* Arg is buffer */
1829 GET_LRU_WINDOW
, /* Arg is t for full-width windows only */
1830 DELETE_OTHER_WINDOWS
, /* Arg is window not to delete */
1831 DELETE_BUFFER_WINDOWS
, /* Arg is buffer */
1833 UNSHOW_BUFFER
, /* Arg is buffer */
1834 REDISPLAY_BUFFER_WINDOWS
, /* Arg is buffer */
1839 window_loop (type
, obj
, mini
, frames
)
1840 enum window_loop type
;
1841 Lisp_Object obj
, frames
;
1844 Lisp_Object window
, windows
, best_window
, frame_arg
;
1846 struct gcpro gcpro1
;
1848 /* If we're only looping through windows on a particular frame,
1849 frame points to that frame. If we're looping through windows
1850 on all frames, frame is 0. */
1851 if (FRAMEP (frames
))
1852 f
= XFRAME (frames
);
1853 else if (NILP (frames
))
1854 f
= SELECTED_FRAME ();
1859 frame_arg
= Qlambda
;
1860 else if (XFASTINT (frames
) == 0)
1862 else if (EQ (frames
, Qvisible
))
1867 /* frame_arg is Qlambda to stick to one frame,
1868 Qvisible to consider all visible frames,
1871 /* Pick a window to start with. */
1875 window
= FRAME_SELECTED_WINDOW (f
);
1877 window
= FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
1879 windows
= window_list_1 (window
, mini
? Qt
: Qnil
, frame_arg
);
1883 for (; CONSP (windows
); windows
= CDR (windows
))
1887 window
= XCAR (windows
);
1888 w
= XWINDOW (window
);
1890 /* Note that we do not pay attention here to whether the frame
1891 is visible, since Fwindow_list skips non-visible frames if
1892 that is desired, under the control of frame_arg. */
1893 if (!MINI_WINDOW_P (w
)
1894 /* For UNSHOW_BUFFER, we must always consider all windows. */
1895 || type
== UNSHOW_BUFFER
1896 || (mini
&& minibuf_level
> 0))
1899 case GET_BUFFER_WINDOW
:
1900 if (EQ (w
->buffer
, obj
)
1901 /* Don't find any minibuffer window
1902 except the one that is currently in use. */
1903 && (MINI_WINDOW_P (w
)
1904 ? EQ (window
, minibuf_window
)
1907 if (NILP (best_window
))
1908 best_window
= window
;
1909 else if (EQ (window
, selected_window
))
1910 /* For compatibility with 20.x, prefer to return
1912 best_window
= window
;
1916 case GET_LRU_WINDOW
:
1917 /* t as arg means consider only full-width windows */
1918 if (!NILP (obj
) && !WINDOW_FULL_WIDTH_P (w
))
1920 /* Ignore dedicated windows and minibuffers. */
1921 if (MINI_WINDOW_P (w
) || EQ (w
->dedicated
, Qt
))
1923 if (NILP (best_window
)
1924 || (XFASTINT (XWINDOW (best_window
)->use_time
)
1925 > XFASTINT (w
->use_time
)))
1926 best_window
= window
;
1929 case DELETE_OTHER_WINDOWS
:
1930 if (!EQ (window
, obj
))
1931 Fdelete_window (window
);
1934 case DELETE_BUFFER_WINDOWS
:
1935 if (EQ (w
->buffer
, obj
))
1937 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
1939 /* If this window is dedicated, and in a frame of its own,
1941 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
1942 && !NILP (w
->dedicated
)
1943 && other_visible_frames (f
))
1945 /* Skip the other windows on this frame.
1946 There might be one, the minibuffer! */
1947 while (CONSP (XCDR (windows
))
1948 && EQ (XWINDOW (XCAR (windows
))->frame
,
1949 XWINDOW (XCAR (XCDR (windows
)))->frame
))
1950 windows
= XCDR (windows
);
1952 /* Now we can safely delete the frame. */
1953 Fdelete_frame (w
->frame
, Qnil
);
1955 else if (NILP (w
->parent
))
1957 /* If we're deleting the buffer displayed in the
1958 only window on the frame, find a new buffer to
1961 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
1962 Fset_window_buffer (window
, buffer
, Qnil
);
1963 if (EQ (window
, selected_window
))
1964 Fset_buffer (w
->buffer
);
1967 Fdelete_window (window
);
1971 case GET_LARGEST_WINDOW
:
1973 /* Ignore dedicated windows and minibuffers. */
1974 if (MINI_WINDOW_P (w
) || EQ (w
->dedicated
, Qt
))
1977 if (NILP (best_window
))
1978 best_window
= window
;
1981 struct window
*b
= XWINDOW (best_window
);
1982 if (XFASTINT (w
->total_lines
) * XFASTINT (w
->total_cols
)
1983 > XFASTINT (b
->total_lines
) * XFASTINT (b
->total_cols
))
1984 best_window
= window
;
1990 if (EQ (w
->buffer
, obj
))
1993 struct frame
*f
= XFRAME (w
->frame
);
1995 /* Find another buffer to show in this window. */
1996 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
1998 /* If this window is dedicated, and in a frame of its own,
2000 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2001 && !NILP (w
->dedicated
)
2002 && other_visible_frames (f
))
2004 /* Skip the other windows on this frame.
2005 There might be one, the minibuffer! */
2006 while (CONSP (XCDR (windows
))
2007 && EQ (XWINDOW (XCAR (windows
))->frame
,
2008 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2009 windows
= XCDR (windows
);
2011 /* Now we can safely delete the frame. */
2012 Fdelete_frame (w
->frame
, Qnil
);
2014 else if (!NILP (w
->dedicated
) && !NILP (w
->parent
))
2017 XSETWINDOW (window
, w
);
2018 /* If this window is dedicated and not the only window
2019 in its frame, then kill it. */
2020 Fdelete_window (window
);
2024 /* Otherwise show a different buffer in the window. */
2025 w
->dedicated
= Qnil
;
2026 Fset_window_buffer (window
, buffer
, Qnil
);
2027 if (EQ (window
, selected_window
))
2028 Fset_buffer (w
->buffer
);
2033 case REDISPLAY_BUFFER_WINDOWS
:
2034 if (EQ (w
->buffer
, obj
))
2036 mark_window_display_accurate (window
, 0);
2037 w
->update_mode_line
= Qt
;
2038 XBUFFER (obj
)->prevent_redisplay_optimizations_p
= 1;
2039 ++update_mode_lines
;
2040 best_window
= window
;
2044 /* Check for a window that has a killed buffer. */
2045 case CHECK_ALL_WINDOWS
:
2046 if (! NILP (w
->buffer
)
2047 && NILP (XBUFFER (w
->buffer
)->name
))
2051 case WINDOW_LOOP_UNUSED
:
2060 /* Used for debugging. Abort if any window has a dead buffer. */
2063 check_all_windows ()
2065 window_loop (CHECK_ALL_WINDOWS
, Qnil
, 1, Qt
);
2068 DEFUN ("get-lru-window", Fget_lru_window
, Sget_lru_window
, 0, 1, 0,
2069 doc
: /* Return the window least recently selected or used for display.
2070 Return a full-width window if possible.
2071 If optional argument FRAME is `visible', search all visible frames.
2072 If FRAME is 0, search all visible and iconified frames.
2073 If FRAME is t, search all frames.
2074 If FRAME is nil, search only the selected frame.
2075 If FRAME is a frame, search only that frame. */)
2079 register Lisp_Object w
;
2080 /* First try for a window that is full-width */
2081 w
= window_loop (GET_LRU_WINDOW
, Qt
, 0, frame
);
2082 if (!NILP (w
) && !EQ (w
, selected_window
))
2084 /* If none of them, try the rest */
2085 return window_loop (GET_LRU_WINDOW
, Qnil
, 0, frame
);
2088 DEFUN ("get-largest-window", Fget_largest_window
, Sget_largest_window
, 0, 1, 0,
2089 doc
: /* Return the largest window in area.
2090 If optional argument FRAME is `visible', search all visible frames.
2091 If FRAME is 0, search all visible and iconified frames.
2092 If FRAME is t, search all frames.
2093 If FRAME is nil, search only the selected frame.
2094 If FRAME is a frame, search only that frame. */)
2098 return window_loop (GET_LARGEST_WINDOW
, Qnil
, 0,
2102 DEFUN ("get-buffer-window", Fget_buffer_window
, Sget_buffer_window
, 1, 2, 0,
2103 doc
: /* Return a window currently displaying BUFFER, or nil if none.
2104 If optional argument FRAME is `visible', search all visible frames.
2105 If optional argument FRAME is 0, search all visible and iconified frames.
2106 If FRAME is t, search all frames.
2107 If FRAME is nil, search only the selected frame.
2108 If FRAME is a frame, search only that frame. */)
2110 Lisp_Object buffer
, frame
;
2112 buffer
= Fget_buffer (buffer
);
2113 if (BUFFERP (buffer
))
2114 return window_loop (GET_BUFFER_WINDOW
, buffer
, 1, frame
);
2119 DEFUN ("delete-other-windows", Fdelete_other_windows
, Sdelete_other_windows
,
2121 doc
: /* Make WINDOW (or the selected window) fill its frame.
2122 Only the frame WINDOW is on is affected.
2123 This function tries to reduce display jumps
2124 by keeping the text previously visible in WINDOW
2125 in the same place on the frame. Doing this depends on
2126 the value of (window-start WINDOW), so if calling this function
2127 in a program gives strange scrolling, make sure the window-start
2128 value is reasonable when this function is called. */)
2137 window
= selected_window
;
2139 CHECK_LIVE_WINDOW (window
);
2140 w
= XWINDOW (window
);
2142 startpos
= marker_position (w
->start
);
2143 top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2145 if (MINI_WINDOW_P (w
) && top
> 0)
2146 error ("Can't expand minibuffer to full frame");
2148 window_loop (DELETE_OTHER_WINDOWS
, window
, 0, WINDOW_FRAME (w
));
2150 /* Try to minimize scrolling, by setting the window start to the point
2151 will cause the text at the old window start to be at the same place
2152 on the frame. But don't try to do this if the window start is
2153 outside the visible portion (as might happen when the display is
2154 not current, due to typeahead). */
2155 new_top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2157 && startpos
>= BUF_BEGV (XBUFFER (w
->buffer
))
2158 && startpos
<= BUF_ZV (XBUFFER (w
->buffer
)))
2160 struct position pos
;
2161 struct buffer
*obuf
= current_buffer
;
2163 Fset_buffer (w
->buffer
);
2164 /* This computation used to temporarily move point, but that can
2165 have unwanted side effects due to text properties. */
2166 pos
= *vmotion (startpos
, -top
, w
);
2168 set_marker_both (w
->start
, w
->buffer
, pos
.bufpos
, pos
.bytepos
);
2169 w
->window_end_valid
= Qnil
;
2170 w
->start_at_line_beg
= ((pos
.bytepos
== BEGV_BYTE
2171 || FETCH_BYTE (pos
.bytepos
- 1) == '\n') ? Qt
2173 /* We need to do this, so that the window-scroll-functions
2175 w
->optional_new_start
= Qt
;
2177 set_buffer_internal (obuf
);
2183 DEFUN ("delete-windows-on", Fdelete_windows_on
, Sdelete_windows_on
,
2184 1, 2, "bDelete windows on (buffer): ",
2185 doc
: /* Delete all windows showing BUFFER.
2186 Optional second argument FRAME controls which frames are affected.
2187 If optional argument FRAME is `visible', search all visible frames.
2188 If FRAME is 0, search all visible and iconified frames.
2189 If FRAME is nil, search all frames.
2190 If FRAME is t, search only the selected frame.
2191 If FRAME is a frame, search only that frame. */)
2193 Lisp_Object buffer
, frame
;
2195 /* FRAME uses t and nil to mean the opposite of what window_loop
2199 else if (EQ (frame
, Qt
))
2204 buffer
= Fget_buffer (buffer
);
2205 CHECK_BUFFER (buffer
);
2206 window_loop (DELETE_BUFFER_WINDOWS
, buffer
, 0, frame
);
2212 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows
,
2213 Sreplace_buffer_in_windows
,
2214 1, 1, "bReplace buffer in windows: ",
2215 doc
: /* Replace BUFFER with some other buffer in all windows showing it. */)
2221 buffer
= Fget_buffer (buffer
);
2222 CHECK_BUFFER (buffer
);
2223 window_loop (UNSHOW_BUFFER
, buffer
, 0, Qt
);
2228 /* Replace BUFFER with some other buffer in all windows
2229 of all frames, even those on other keyboards. */
2232 replace_buffer_in_all_windows (buffer
)
2236 Lisp_Object tail
, frame
;
2238 /* A single call to window_loop won't do the job
2239 because it only considers frames on the current keyboard.
2240 So loop manually over frames, and handle each one. */
2241 FOR_EACH_FRAME (tail
, frame
)
2242 window_loop (UNSHOW_BUFFER
, buffer
, 1, frame
);
2244 window_loop (UNSHOW_BUFFER
, buffer
, 1, Qt
);
2248 /* Set the height of WINDOW and all its inferiors. */
2250 /* The smallest acceptable dimensions for a window. Anything smaller
2251 might crash Emacs. */
2253 #define MIN_SAFE_WINDOW_WIDTH (2)
2254 #define MIN_SAFE_WINDOW_HEIGHT (1)
2256 /* Make sure that window_min_height and window_min_width are
2257 not too small; if they are, set them to safe minima. */
2260 check_min_window_sizes ()
2262 /* Smaller values might permit a crash. */
2263 if (window_min_width
< MIN_SAFE_WINDOW_WIDTH
)
2264 window_min_width
= MIN_SAFE_WINDOW_WIDTH
;
2265 if (window_min_height
< MIN_SAFE_WINDOW_HEIGHT
)
2266 window_min_height
= MIN_SAFE_WINDOW_HEIGHT
;
2269 /* If *ROWS or *COLS are too small a size for FRAME, set them to the
2270 minimum allowable size. */
2273 check_frame_size (frame
, rows
, cols
)
2277 /* For height, we have to see:
2278 how many windows the frame has at minimum (one or two),
2279 and whether it has a menu bar or other special stuff at the top. */
2281 = ((FRAME_MINIBUF_ONLY_P (frame
) || ! FRAME_HAS_MINIBUF_P (frame
))
2282 ? MIN_SAFE_WINDOW_HEIGHT
2283 : 2 * MIN_SAFE_WINDOW_HEIGHT
);
2285 if (FRAME_TOP_MARGIN (frame
) > 0)
2286 min_height
+= FRAME_TOP_MARGIN (frame
);
2288 if (*rows
< min_height
)
2290 if (*cols
< MIN_SAFE_WINDOW_WIDTH
)
2291 *cols
= MIN_SAFE_WINDOW_WIDTH
;
2295 /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means
2296 check if W's width can be changed, otherwise check W's height.
2297 CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's
2298 siblings, too. If none of the siblings is resizable, WINDOW isn't
2302 window_fixed_size_p (w
, width_p
, check_siblings_p
)
2304 int width_p
, check_siblings_p
;
2309 if (!NILP (w
->hchild
))
2311 c
= XWINDOW (w
->hchild
);
2315 /* A horiz. combination is fixed-width if all of if its
2317 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2318 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2319 fixed_p
= c
== NULL
;
2323 /* A horiz. combination is fixed-height if one of if its
2325 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2326 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2327 fixed_p
= c
!= NULL
;
2330 else if (!NILP (w
->vchild
))
2332 c
= XWINDOW (w
->vchild
);
2336 /* A vert. combination is fixed-width if one of if its
2338 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2339 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2340 fixed_p
= c
!= NULL
;
2344 /* A vert. combination is fixed-height if all of if its
2346 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2347 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2348 fixed_p
= c
== NULL
;
2351 else if (BUFFERP (w
->buffer
))
2353 if (w
->height_fixed_p
&& !width_p
)
2357 struct buffer
*old
= current_buffer
;
2360 current_buffer
= XBUFFER (w
->buffer
);
2361 val
= find_symbol_value (Qwindow_size_fixed
);
2362 current_buffer
= old
;
2365 if (!EQ (val
, Qunbound
))
2367 fixed_p
= !NILP (val
);
2370 && ((EQ (val
, Qheight
) && width_p
)
2371 || (EQ (val
, Qwidth
) && !width_p
)))
2376 /* Can't tell if this one is resizable without looking at
2377 siblings. If all siblings are fixed-size this one is too. */
2378 if (!fixed_p
&& check_siblings_p
&& WINDOWP (w
->parent
))
2382 for (child
= w
->prev
; !NILP (child
); child
= XWINDOW (child
)->prev
)
2383 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2387 for (child
= w
->next
; !NILP (child
); child
= XWINDOW (child
)->next
)
2388 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2402 /* Return the minimum size of window W, not taking fixed-width windows
2403 into account. WIDTH_P non-zero means return the minimum width,
2404 otherwise return the minimum height. If W is a combination window,
2405 compute the minimum size from the minimum sizes of W's children. */
2408 window_min_size_1 (w
, width_p
)
2415 if (!NILP (w
->hchild
))
2417 c
= XWINDOW (w
->hchild
);
2422 /* The min width of a horizontal combination is
2423 the sum of the min widths of its children. */
2426 size
+= window_min_size_1 (c
, width_p
);
2427 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2432 /* The min height a horizontal combination equals
2433 the maximum of all min height of its children. */
2436 int min_size
= window_min_size_1 (c
, width_p
);
2437 size
= max (min_size
, size
);
2438 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2442 else if (!NILP (w
->vchild
))
2444 c
= XWINDOW (w
->vchild
);
2449 /* The min width of a vertical combination is
2450 the maximum of the min widths of its children. */
2453 int min_size
= window_min_size_1 (c
, width_p
);
2454 size
= max (min_size
, size
);
2455 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2460 /* The min height of a vertical combination equals
2461 the sum of the min height of its children. */
2464 size
+= window_min_size_1 (c
, width_p
);
2465 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2472 size
= window_min_width
;
2475 if (MINI_WINDOW_P (w
)
2476 || (!WINDOW_WANTS_MODELINE_P (w
)
2477 && !WINDOW_WANTS_HEADER_LINE_P (w
)))
2480 size
= window_min_height
;
2488 /* Return the minimum size of window W, taking fixed-size windows into
2489 account. WIDTH_P non-zero means return the minimum width,
2490 otherwise return the minimum height. IGNORE_FIXED_P non-zero means
2491 ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size
2492 unless FIXED is null. */
2495 window_min_size (w
, width_p
, ignore_fixed_p
, fixed
)
2497 int width_p
, ignore_fixed_p
, *fixed
;
2504 fixed_p
= window_fixed_size_p (w
, width_p
, 1);
2510 size
= width_p
? XFASTINT (w
->total_cols
) : XFASTINT (w
->total_lines
);
2512 size
= window_min_size_1 (w
, width_p
);
2518 /* Adjust the margins of window W if text area is too small.
2519 Return 1 if window width is ok after adjustment; 0 if window
2520 is still too narrow. */
2523 adjust_window_margins (w
)
2526 int box_cols
= (WINDOW_TOTAL_COLS (w
)
2527 - WINDOW_FRINGE_COLS (w
)
2528 - WINDOW_SCROLL_BAR_COLS (w
));
2529 int margin_cols
= (WINDOW_LEFT_MARGIN_COLS (w
)
2530 + WINDOW_RIGHT_MARGIN_COLS (w
));
2532 if (box_cols
- margin_cols
>= MIN_SAFE_WINDOW_WIDTH
)
2535 if (margin_cols
< 0 || box_cols
< MIN_SAFE_WINDOW_WIDTH
)
2538 /* Window's text area is too narrow, but reducing the window
2539 margins will fix that. */
2540 margin_cols
= box_cols
- MIN_SAFE_WINDOW_WIDTH
;
2541 if (WINDOW_RIGHT_MARGIN_COLS (w
) > 0)
2543 if (WINDOW_LEFT_MARGIN_COLS (w
) > 0)
2544 w
->left_margin_cols
= w
->right_margin_cols
2545 = make_number (margin_cols
/2);
2547 w
->right_margin_cols
= make_number (margin_cols
);
2550 w
->left_margin_cols
= make_number (margin_cols
);
2554 /* Calculate new sizes for windows in the list FORWARD when the window size
2555 goes from TOTAL to SIZE. TOTAL must be greater than SIZE.
2556 The number of windows in FORWARD is NCHILDREN, and the number that
2557 can shrink is SHRINKABLE.
2558 The minimum size a window can have is MIN_SIZE.
2559 If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero.
2560 If we are shrinking columns, WIDTH_P is non-zero, otherwise we are
2563 This function returns an allocated array of new sizes that the caller
2564 must free. The size -1 means the window is fixed and RESIZE_FIXED_P
2565 is zero. Array index 0 refers to the first window in FORWARD, 1 to
2566 the second, and so on.
2568 This function tries to keep windows at least at the minimum size
2569 and resize other windows before it resizes any window to zero (i.e.
2570 delete that window).
2572 Windows are resized proportional to their size, so bigger windows
2573 shrink more than smaller windows. */
2575 shrink_windows (total
, size
, nchildren
, shrinkable
,
2576 min_size
, resize_fixed_p
, forward
, width_p
)
2577 int total
, size
, nchildren
, shrinkable
, min_size
;
2578 int resize_fixed_p
, width_p
;
2579 Lisp_Object forward
;
2581 int available_resize
= 0;
2585 int smallest
= total
;
2586 int total_removed
= 0;
2587 int total_shrink
= total
- size
;
2590 new_sizes
= xmalloc (sizeof (*new_sizes
) * nchildren
);
2592 for (i
= 0, child
= forward
; !NILP (child
); child
= c
->next
, ++i
)
2596 c
= XWINDOW (child
);
2597 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2599 if (! resize_fixed_p
&& window_fixed_size_p (c
, width_p
, 0))
2603 new_sizes
[i
] = child_size
;
2604 if (child_size
> min_size
)
2605 available_resize
+= child_size
- min_size
;
2608 /* We might need to shrink some windows to zero. Find the smallest
2609 windows and set them to 0 until we can fulfil the new size. */
2611 while (shrinkable
> 1 && size
+ available_resize
< total
)
2613 for (i
= 0; i
< nchildren
; ++i
)
2614 if (new_sizes
[i
] > 0 && smallest
> new_sizes
[i
])
2615 smallest
= new_sizes
[i
];
2617 for (i
= 0; i
< nchildren
; ++i
)
2618 if (new_sizes
[i
] == smallest
)
2620 /* Resize this window down to zero. */
2622 if (smallest
> min_size
)
2623 available_resize
-= smallest
- min_size
;
2624 available_resize
+= smallest
;
2626 total_removed
+= smallest
;
2628 /* Out of for, just remove one window at the time and
2629 check again if we have enough space. */
2634 /* Now, calculate the new sizes. Try to shrink each window
2635 proportional to its size. */
2636 for (i
= 0; i
< nchildren
; ++i
)
2638 if (new_sizes
[i
] > min_size
)
2640 int to_shrink
= total_shrink
*new_sizes
[i
]/total
;
2641 if (new_sizes
[i
] - to_shrink
< min_size
)
2642 to_shrink
= new_sizes
[i
] - min_size
;
2643 new_sizes
[i
] -= to_shrink
;
2644 total_removed
+= to_shrink
;
2648 /* Any reminder due to rounding, we just subtract from windows
2649 that are left and still can be shrunk. */
2650 while (total_shrink
> total_removed
)
2652 for (i
= 0; i
< nchildren
; ++i
)
2653 if (new_sizes
[i
] > min_size
)
2658 /* Out of for, just shrink one window at the time and
2659 check again if we have enough space. */
2667 /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
2668 WINDOW's width. Resize WINDOW's children, if any, so that they
2669 keep their proportionate size relative to WINDOW. Propagate
2670 WINDOW's top or left edge position to children. Delete windows
2671 that become too small unless NODELETE_P is non-zero.
2673 If NODELETE_P is 2, that means we do delete windows that are
2674 too small, even if they were too small before! */
2677 size_window (window
, size
, width_p
, nodelete_p
)
2679 int size
, width_p
, nodelete_p
;
2681 struct window
*w
= XWINDOW (window
);
2683 Lisp_Object child
, *forward
, *sideward
;
2684 int old_size
, min_size
, safe_min_size
;
2686 /* We test nodelete_p != 2 and nodelete_p != 1 below, so it
2687 seems like it's too soon to do this here. ++KFS. */
2688 if (nodelete_p
== 2)
2691 check_min_window_sizes ();
2692 size
= max (0, size
);
2694 /* If the window has been "too small" at one point,
2695 don't delete it for being "too small" in the future.
2696 Preserve it as long as that is at all possible. */
2699 old_size
= WINDOW_TOTAL_COLS (w
);
2700 min_size
= window_min_width
;
2701 /* Ensure that there is room for the scroll bar and fringes!
2702 We may reduce display margins though. */
2703 safe_min_size
= (MIN_SAFE_WINDOW_WIDTH
2704 + WINDOW_FRINGE_COLS (w
)
2705 + WINDOW_SCROLL_BAR_COLS (w
));
2709 old_size
= XINT (w
->total_lines
);
2710 min_size
= window_min_height
;
2711 safe_min_size
= MIN_SAFE_WINDOW_HEIGHT
;
2714 if (old_size
< min_size
&& nodelete_p
!= 2)
2715 w
->too_small_ok
= Qt
;
2717 /* Maybe delete WINDOW if it's too small. */
2718 if (nodelete_p
!= 1 && !NILP (w
->parent
))
2720 if (!MINI_WINDOW_P (w
) && !NILP (w
->too_small_ok
))
2721 min_size
= width_p
? MIN_SAFE_WINDOW_WIDTH
: MIN_SAFE_WINDOW_HEIGHT
;
2722 if (min_size
< safe_min_size
)
2723 min_size
= safe_min_size
;
2724 if (size
< min_size
)
2726 delete_window (window
);
2731 /* Set redisplay hints. */
2732 w
->last_modified
= make_number (0);
2733 w
->last_overlay_modified
= make_number (0);
2734 windows_or_buffers_changed
++;
2735 FRAME_WINDOW_SIZES_CHANGED (XFRAME (w
->frame
)) = 1;
2739 sideward
= &w
->vchild
;
2740 forward
= &w
->hchild
;
2741 w
->total_cols
= make_number (size
);
2742 adjust_window_margins (w
);
2746 sideward
= &w
->hchild
;
2747 forward
= &w
->vchild
;
2748 w
->total_lines
= make_number (size
);
2749 w
->orig_total_lines
= Qnil
;
2752 if (!NILP (*sideward
))
2754 for (child
= *sideward
; !NILP (child
); child
= c
->next
)
2756 c
= XWINDOW (child
);
2758 c
->left_col
= w
->left_col
;
2760 c
->top_line
= w
->top_line
;
2761 size_window (child
, size
, width_p
, nodelete_p
);
2764 else if (!NILP (*forward
))
2766 int fixed_size
, each
, extra
, n
;
2767 int resize_fixed_p
, nfixed
;
2768 int last_pos
, first_pos
, nchildren
, total
;
2769 int *new_sizes
= NULL
;
2771 /* Determine the fixed-size portion of the this window, and the
2772 number of child windows. */
2773 fixed_size
= nchildren
= nfixed
= total
= 0;
2774 for (child
= *forward
; !NILP (child
); child
= c
->next
, ++nchildren
)
2778 c
= XWINDOW (child
);
2779 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2780 total
+= child_size
;
2782 if (window_fixed_size_p (c
, width_p
, 0))
2784 fixed_size
+= child_size
;
2789 /* If the new size is smaller than fixed_size, or if there
2790 aren't any resizable windows, allow resizing fixed-size
2792 resize_fixed_p
= nfixed
== nchildren
|| size
< fixed_size
;
2794 /* Compute how many lines/columns to add/remove to each child. The
2795 value of extra takes care of rounding errors. */
2796 n
= resize_fixed_p
? nchildren
: nchildren
- nfixed
;
2797 if (size
< total
&& n
> 1)
2798 new_sizes
= shrink_windows (total
, size
, nchildren
, n
, min_size
,
2799 resize_fixed_p
, *forward
, width_p
);
2802 each
= (size
- total
) / n
;
2803 extra
= (size
- total
) - n
* each
;
2806 /* Compute new children heights and edge positions. */
2807 first_pos
= width_p
? XINT (w
->left_col
) : XINT (w
->top_line
);
2808 last_pos
= first_pos
;
2809 for (n
= 0, child
= *forward
; !NILP (child
); child
= c
->next
, ++n
)
2811 int new_size
, old_size
;
2813 c
= XWINDOW (child
);
2814 old_size
= width_p
? XFASTINT (c
->total_cols
) : XFASTINT (c
->total_lines
);
2815 new_size
= old_size
;
2817 /* The top or left edge position of this child equals the
2818 bottom or right edge of its predecessor. */
2820 c
->left_col
= make_number (last_pos
);
2822 c
->top_line
= make_number (last_pos
);
2824 /* If this child can be resized, do it. */
2825 if (resize_fixed_p
|| !window_fixed_size_p (c
, width_p
, 0))
2827 new_size
= new_sizes
? new_sizes
[n
] : old_size
+ each
+ extra
;
2831 /* Set new height. Note that size_window also propagates
2832 edge positions to children, so it's not a no-op if we
2833 didn't change the child's size. */
2834 size_window (child
, new_size
, width_p
, 1);
2836 /* Remember the bottom/right edge position of this child; it
2837 will be used to set the top/left edge of the next child. */
2838 last_pos
+= new_size
;
2841 if (new_sizes
) xfree (new_sizes
);
2843 /* We should have covered the parent exactly with child windows. */
2844 xassert (size
== last_pos
- first_pos
);
2846 /* Now delete any children that became too small. */
2848 for (child
= *forward
; !NILP (child
); child
= c
->next
)
2851 c
= XWINDOW (child
);
2852 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2853 size_window (child
, child_size
, width_p
, 2);
2858 /* Set WINDOW's height to HEIGHT, and recursively change the height of
2859 WINDOW's children. NODELETE non-zero means don't delete windows
2860 that become too small in the process. (The caller should check
2861 later and do so if appropriate.) */
2864 set_window_height (window
, height
, nodelete
)
2869 size_window (window
, height
, 0, nodelete
);
2873 /* Set WINDOW's width to WIDTH, and recursively change the width of
2874 WINDOW's children. NODELETE non-zero means don't delete windows
2875 that become too small in the process. (The caller should check
2876 later and do so if appropriate.) */
2879 set_window_width (window
, width
, nodelete
)
2884 size_window (window
, width
, 1, nodelete
);
2887 /* Change window heights in windows rooted in WINDOW by N lines. */
2890 change_window_heights (window
, n
)
2894 struct window
*w
= XWINDOW (window
);
2896 XSETFASTINT (w
->top_line
, XFASTINT (w
->top_line
) + n
);
2897 XSETFASTINT (w
->total_lines
, XFASTINT (w
->total_lines
) - n
);
2899 if (INTEGERP (w
->orig_top_line
))
2900 XSETFASTINT (w
->orig_top_line
, XFASTINT (w
->orig_top_line
) + n
);
2901 if (INTEGERP (w
->orig_total_lines
))
2902 XSETFASTINT (w
->orig_total_lines
, XFASTINT (w
->orig_total_lines
) - n
);
2904 /* Handle just the top child in a vertical split. */
2905 if (!NILP (w
->vchild
))
2906 change_window_heights (w
->vchild
, n
);
2908 /* Adjust all children in a horizontal split. */
2909 for (window
= w
->hchild
; !NILP (window
); window
= w
->next
)
2911 w
= XWINDOW (window
);
2912 change_window_heights (window
, n
);
2917 int window_select_count
;
2920 Fset_window_buffer_unwind (obuf
)
2927 EXFUN (Fset_window_fringes
, 4);
2928 EXFUN (Fset_window_scroll_bars
, 4);
2930 /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero
2931 means it's allowed to run hooks. See make_frame for a case where
2932 it's not allowed. KEEP_MARGINS_P non-zero means that the current
2933 margins, fringes, and scroll-bar settings of the window are not
2934 reset from the buffer's local settings. */
2937 set_window_buffer (window
, buffer
, run_hooks_p
, keep_margins_p
)
2938 Lisp_Object window
, buffer
;
2939 int run_hooks_p
, keep_margins_p
;
2941 struct window
*w
= XWINDOW (window
);
2942 struct buffer
*b
= XBUFFER (buffer
);
2943 int count
= SPECPDL_INDEX ();
2947 if (EQ (window
, selected_window
))
2948 b
->last_selected_window
= window
;
2950 /* Update time stamps of buffer display. */
2951 if (INTEGERP (b
->display_count
))
2952 XSETINT (b
->display_count
, XINT (b
->display_count
) + 1);
2953 b
->display_time
= Fcurrent_time ();
2955 XSETFASTINT (w
->window_end_pos
, 0);
2956 XSETFASTINT (w
->window_end_vpos
, 0);
2957 bzero (&w
->last_cursor
, sizeof w
->last_cursor
);
2958 w
->window_end_valid
= Qnil
;
2959 w
->hscroll
= w
->min_hscroll
= make_number (0);
2961 set_marker_both (w
->pointm
, buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
2962 set_marker_restricted (w
->start
,
2963 make_number (b
->last_window_start
),
2965 w
->start_at_line_beg
= Qnil
;
2966 w
->force_start
= Qnil
;
2967 XSETFASTINT (w
->last_modified
, 0);
2968 XSETFASTINT (w
->last_overlay_modified
, 0);
2969 windows_or_buffers_changed
++;
2971 /* We must select BUFFER for running the window-scroll-functions.
2972 If WINDOW is selected, switch permanently.
2973 Otherwise, switch but go back to the ambient buffer afterward. */
2974 if (EQ (window
, selected_window
))
2975 Fset_buffer (buffer
);
2976 /* We can't check ! NILP (Vwindow_scroll_functions) here
2977 because that might itself be a local variable. */
2978 else if (window_initialized
)
2980 record_unwind_protect (Fset_window_buffer_unwind
, Fcurrent_buffer ());
2981 Fset_buffer (buffer
);
2984 if (!keep_margins_p
)
2986 /* Set left and right marginal area width etc. from buffer. */
2988 /* This may call adjust_window_margins three times, so
2989 temporarily disable window margins. */
2990 Lisp_Object save_left
= w
->left_margin_cols
;
2991 Lisp_Object save_right
= w
->right_margin_cols
;
2993 w
->left_margin_cols
= w
->right_margin_cols
= Qnil
;
2995 Fset_window_fringes (window
,
2996 b
->left_fringe_width
, b
->right_fringe_width
,
2997 b
->fringes_outside_margins
);
2999 Fset_window_scroll_bars (window
,
3000 b
->scroll_bar_width
,
3001 b
->vertical_scroll_bar_type
, Qnil
);
3003 w
->left_margin_cols
= save_left
;
3004 w
->right_margin_cols
= save_right
;
3006 Fset_window_margins (window
,
3007 b
->left_margin_cols
, b
->right_margin_cols
);
3012 if (! NILP (Vwindow_scroll_functions
))
3013 run_hook_with_args_2 (Qwindow_scroll_functions
, window
,
3014 Fmarker_position (w
->start
));
3016 if (! NILP (Vwindow_configuration_change_hook
)
3017 && ! NILP (Vrun_hooks
))
3018 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3021 unbind_to (count
, Qnil
);
3025 DEFUN ("set-window-buffer", Fset_window_buffer
, Sset_window_buffer
, 2, 3, 0,
3026 doc
: /* Make WINDOW display BUFFER as its contents.
3027 BUFFER can be a buffer or buffer name.
3028 Optional third arg KEEP_MARGINS non-nil means that WINDOW's current
3029 display margins, fringe widths, and scroll bar settings are maintained;
3030 the default is to reset these from BUFFER's local settings or the frame
3032 (window
, buffer
, keep_margins
)
3033 register Lisp_Object window
, buffer
, keep_margins
;
3035 register Lisp_Object tem
;
3036 register struct window
*w
= decode_window (window
);
3038 XSETWINDOW (window
, w
);
3039 buffer
= Fget_buffer (buffer
);
3040 CHECK_BUFFER (buffer
);
3042 if (NILP (XBUFFER (buffer
)->name
))
3043 error ("Attempt to display deleted buffer");
3047 error ("Window is deleted");
3048 else if (! EQ (tem
, Qt
)) /* w->buffer is t when the window
3049 is first being set up. */
3051 if (!NILP (w
->dedicated
) && !EQ (tem
, buffer
))
3052 error ("Window is dedicated to `%s'",
3053 SDATA (XBUFFER (tem
)->name
));
3058 set_window_buffer (window
, buffer
, 1, !NILP (keep_margins
));
3062 /* Note that selected_window can be nil
3063 when this is called from Fset_window_configuration. */
3065 DEFUN ("select-window", Fselect_window
, Sselect_window
, 1, 2, 0,
3066 doc
: /* Select WINDOW. Most editing will apply to WINDOW's buffer.
3067 If WINDOW is not already selected, also make WINDOW's buffer current.
3068 Also make WINDOW the frame's selected window.
3069 Optional second arg NORECORD non-nil means
3070 do not put this buffer at the front of the list of recently selected ones.
3072 Note that the main editor command loop
3073 selects the buffer of the selected window before each command. */)
3075 register Lisp_Object window
, norecord
;
3077 register struct window
*w
;
3078 register struct window
*ow
;
3081 CHECK_LIVE_WINDOW (window
);
3083 w
= XWINDOW (window
);
3084 w
->frozen_window_start_p
= 0;
3086 XSETFASTINT (w
->use_time
, ++window_select_count
);
3087 if (EQ (window
, selected_window
))
3090 if (!NILP (selected_window
))
3092 ow
= XWINDOW (selected_window
);
3093 if (! NILP (ow
->buffer
))
3094 set_marker_both (ow
->pointm
, ow
->buffer
,
3095 BUF_PT (XBUFFER (ow
->buffer
)),
3096 BUF_PT_BYTE (XBUFFER (ow
->buffer
)));
3099 selected_window
= window
;
3100 sf
= SELECTED_FRAME ();
3101 if (XFRAME (WINDOW_FRAME (w
)) != sf
)
3103 XFRAME (WINDOW_FRAME (w
))->selected_window
= window
;
3104 /* Use this rather than Fhandle_switch_frame
3105 so that FRAME_FOCUS_FRAME is moved appropriately as we
3106 move around in the state where a minibuffer in a separate
3108 Fselect_frame (WINDOW_FRAME (w
), Qnil
);
3111 sf
->selected_window
= window
;
3113 if (NILP (norecord
))
3114 record_buffer (w
->buffer
);
3115 Fset_buffer (w
->buffer
);
3117 XBUFFER (w
->buffer
)->last_selected_window
= window
;
3119 /* Go to the point recorded in the window.
3120 This is important when the buffer is in more
3121 than one window. It also matters when
3122 redisplay_window has altered point after scrolling,
3123 because it makes the change only in the window. */
3125 register int new_point
= marker_position (w
->pointm
);
3126 if (new_point
< BEGV
)
3128 else if (new_point
> ZV
)
3134 windows_or_buffers_changed
++;
3139 select_window_norecord (window
)
3142 return Fselect_window (window
, Qt
);
3145 /* Deiconify the frame containing the window WINDOW,
3146 unless it is the selected frame;
3149 The reason for the exception for the selected frame
3150 is that it seems better not to change the selected frames visibility
3151 merely because of displaying a different buffer in it.
3152 The deiconification is useful when a buffer gets shown in
3153 another frame that you were not using lately. */
3156 display_buffer_1 (window
)
3159 Lisp_Object frame
= XWINDOW (window
)->frame
;
3160 FRAME_PTR f
= XFRAME (frame
);
3162 FRAME_SAMPLE_VISIBILITY (f
);
3164 if (EQ (frame
, selected_frame
))
3165 ; /* Assume the selected frame is already visible enough. */
3166 else if (minibuf_level
> 0
3167 && MINI_WINDOW_P (XWINDOW (selected_window
))
3168 && WINDOW_LIVE_P (minibuf_selected_window
)
3169 && EQ (frame
, WINDOW_FRAME (XWINDOW (minibuf_selected_window
))))
3170 ; /* Assume the frame from which we invoked the minibuffer is visible. */
3173 if (FRAME_ICONIFIED_P (f
))
3174 Fmake_frame_visible (frame
);
3175 else if (FRAME_VISIBLE_P (f
))
3176 Fraise_frame (frame
);
3182 DEFUN ("special-display-p", Fspecial_display_p
, Sspecial_display_p
, 1, 1, 0,
3183 doc
: /* Returns non-nil if a buffer named BUFFER-NAME would be created specially.
3184 The value is actually t if the frame should be called with default frame
3185 parameters, and a list of frame parameters if they were specified.
3186 See `special-display-buffer-names', and `special-display-regexps'. */)
3188 Lisp_Object buffer_name
;
3192 CHECK_STRING (buffer_name
);
3194 tem
= Fmember (buffer_name
, Vspecial_display_buffer_names
);
3198 tem
= Fassoc (buffer_name
, Vspecial_display_buffer_names
);
3202 for (tem
= Vspecial_display_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3204 Lisp_Object car
= XCAR (tem
);
3206 && fast_string_match (car
, buffer_name
) >= 0)
3208 else if (CONSP (car
)
3209 && STRINGP (XCAR (car
))
3210 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3216 DEFUN ("same-window-p", Fsame_window_p
, Ssame_window_p
, 1, 1, 0,
3217 doc
: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window.
3218 See `same-window-buffer-names' and `same-window-regexps'. */)
3220 Lisp_Object buffer_name
;
3224 CHECK_STRING (buffer_name
);
3226 tem
= Fmember (buffer_name
, Vsame_window_buffer_names
);
3230 tem
= Fassoc (buffer_name
, Vsame_window_buffer_names
);
3234 for (tem
= Vsame_window_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3236 Lisp_Object car
= XCAR (tem
);
3238 && fast_string_match (car
, buffer_name
) >= 0)
3240 else if (CONSP (car
)
3241 && STRINGP (XCAR (car
))
3242 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3248 /* Use B so the default is (other-buffer). */
3249 DEFUN ("display-buffer", Fdisplay_buffer
, Sdisplay_buffer
, 1, 3,
3250 "BDisplay buffer: \nP",
3251 doc
: /* Make BUFFER appear in some window but don't select it.
3252 BUFFER can be a buffer or a buffer name.
3253 If BUFFER is shown already in some window, just use that one,
3254 unless the window is the selected window and the optional second
3255 argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).
3256 If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.
3257 Returns the window displaying BUFFER.
3258 If `display-buffer-reuse-frames' is non-nil, and another frame is currently
3259 displaying BUFFER, then simply raise that frame.
3261 The variables `special-display-buffer-names',
3262 `special-display-regexps', `same-window-buffer-names', and
3263 `same-window-regexps' customize how certain buffer names are handled.
3264 The latter two take effect only if NOT-THIS-WINDOW is t.
3266 If optional argument FRAME is `visible', search all visible frames.
3267 If FRAME is 0, search all visible and iconified frames.
3268 If FRAME is t, search all frames.
3269 If FRAME is a frame, search only that frame.
3270 If FRAME is nil, search only the selected frame
3271 (actually the last nonminibuffer frame),
3272 unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,
3273 which means search visible and iconified frames.
3275 If `even-window-heights' is non-nil, window heights will be evened out
3276 if displaying the buffer causes two vertically adjacent windows to be
3278 (buffer
, not_this_window
, frame
)
3279 register Lisp_Object buffer
, not_this_window
, frame
;
3281 register Lisp_Object window
, tem
, swp
;
3285 buffer
= Fget_buffer (buffer
);
3286 CHECK_BUFFER (buffer
);
3288 if (!NILP (Vdisplay_buffer_function
))
3289 return call2 (Vdisplay_buffer_function
, buffer
, not_this_window
);
3291 if (NILP (not_this_window
)
3292 && XBUFFER (XWINDOW (selected_window
)->buffer
) == XBUFFER (buffer
))
3293 return display_buffer_1 (selected_window
);
3295 /* See if the user has specified this buffer should appear
3296 in the selected window. */
3297 if (NILP (not_this_window
))
3299 swp
= Fsame_window_p (XBUFFER (buffer
)->name
);
3300 if (!NILP (swp
) && !no_switch_window (selected_window
))
3302 Fswitch_to_buffer (buffer
, Qnil
);
3303 return display_buffer_1 (selected_window
);
3307 /* If the user wants pop-up-frames or display-buffer-reuse-frames,
3308 look for a window showing BUFFER on any visible or iconified frame.
3309 Otherwise search only the current frame. */
3312 else if (pop_up_frames
3313 || display_buffer_reuse_frames
3314 || last_nonminibuf_frame
== 0)
3315 XSETFASTINT (tem
, 0);
3317 XSETFRAME (tem
, last_nonminibuf_frame
);
3319 window
= Fget_buffer_window (buffer
, tem
);
3321 && (NILP (not_this_window
) || !EQ (window
, selected_window
)))
3322 return display_buffer_1 (window
);
3324 /* Certain buffer names get special handling. */
3325 if (!NILP (Vspecial_display_function
) && NILP (swp
))
3327 tem
= Fspecial_display_p (XBUFFER (buffer
)->name
);
3329 return call1 (Vspecial_display_function
, buffer
);
3331 return call2 (Vspecial_display_function
, buffer
, tem
);
3334 /* If there are no frames open that have more than a minibuffer,
3335 we need to create a new frame. */
3336 if (pop_up_frames
|| last_nonminibuf_frame
== 0)
3338 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3339 Fset_window_buffer (window
, buffer
, Qnil
);
3340 return display_buffer_1 (window
);
3343 f
= SELECTED_FRAME ();
3345 || FRAME_MINIBUF_ONLY_P (f
)
3346 /* If the current frame is a special display frame,
3347 don't try to reuse its windows. */
3348 || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f
))->dedicated
))
3353 if (FRAME_MINIBUF_ONLY_P (f
))
3354 XSETFRAME (frames
, last_nonminibuf_frame
);
3355 /* Don't try to create a window if we would get an error. */
3356 if (split_height_threshold
< window_min_height
<< 1)
3357 split_height_threshold
= window_min_height
<< 1;
3359 /* Note that both Fget_largest_window and Fget_lru_window
3360 ignore minibuffers and dedicated windows.
3361 This means they can return nil. */
3363 /* If the frame we would try to split cannot be split,
3364 try other frames. */
3365 if (FRAME_NO_SPLIT_P (NILP (frames
) ? f
: last_nonminibuf_frame
))
3367 /* Try visible frames first. */
3368 window
= Fget_largest_window (Qvisible
);
3369 /* If that didn't work, try iconified frames. */
3371 window
= Fget_largest_window (make_number (0));
3373 window
= Fget_largest_window (Qt
);
3376 window
= Fget_largest_window (frames
);
3378 /* If we got a tall enough full-width window that can be split,
3381 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3382 && window_height (window
) >= split_height_threshold
3383 && WINDOW_FULL_WIDTH_P (XWINDOW (window
)))
3384 window
= Fsplit_window (window
, Qnil
, Qnil
);
3387 Lisp_Object upper
, lower
, other
;
3389 window
= Fget_lru_window (frames
);
3390 /* If the LRU window is selected, and big enough,
3391 and can be split, split it. */
3393 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3394 && (EQ (window
, selected_window
)
3395 || EQ (XWINDOW (window
)->parent
, Qnil
))
3396 && window_height (window
) >= window_min_height
<< 1)
3397 window
= Fsplit_window (window
, Qnil
, Qnil
);
3398 /* If Fget_lru_window returned nil, try other approaches. */
3400 /* Try visible frames first. */
3402 window
= Fget_buffer_window (buffer
, Qvisible
);
3404 window
= Fget_largest_window (Qvisible
);
3405 /* If that didn't work, try iconified frames. */
3407 window
= Fget_buffer_window (buffer
, make_number (0));
3409 window
= Fget_largest_window (make_number (0));
3410 /* Try invisible frames. */
3412 window
= Fget_buffer_window (buffer
, Qt
);
3414 window
= Fget_largest_window (Qt
);
3415 /* As a last resort, make a new frame. */
3417 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3418 /* If window appears above or below another,
3419 even out their heights. */
3420 other
= upper
= lower
= Qnil
;
3421 if (!NILP (XWINDOW (window
)->prev
))
3422 other
= upper
= XWINDOW (window
)->prev
, lower
= window
;
3423 if (!NILP (XWINDOW (window
)->next
))
3424 other
= lower
= XWINDOW (window
)->next
, upper
= window
;
3426 && !NILP (Veven_window_heights
)
3427 /* Check that OTHER and WINDOW are vertically arrayed. */
3428 && !EQ (XWINDOW (other
)->top_line
, XWINDOW (window
)->top_line
)
3429 && (XFASTINT (XWINDOW (other
)->total_lines
)
3430 > XFASTINT (XWINDOW (window
)->total_lines
)))
3432 int total
= (XFASTINT (XWINDOW (other
)->total_lines
)
3433 + XFASTINT (XWINDOW (window
)->total_lines
));
3434 enlarge_window (upper
,
3435 total
/ 2 - XFASTINT (XWINDOW (upper
)->total_lines
),
3441 window
= Fget_lru_window (Qnil
);
3443 Fset_window_buffer (window
, buffer
, Qnil
);
3444 return display_buffer_1 (window
);
3448 DEFUN ("force-window-update", Fforce_window_update
, Sforce_window_update
,
3450 doc
: /* Force redisplay of all windows.
3451 If optional arg OBJECT is a window, force redisplay of that window only.
3452 If OBJECT is a buffer or buffer name, force redisplay of all windows
3453 displaying that buffer. */)
3459 windows_or_buffers_changed
++;
3460 update_mode_lines
++;
3464 if (WINDOWP (object
))
3466 struct window
*w
= XWINDOW (object
);
3467 mark_window_display_accurate (object
, 0);
3468 w
->update_mode_line
= Qt
;
3469 if (BUFFERP (w
->buffer
))
3470 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
3471 ++update_mode_lines
;
3475 if (STRINGP (object
))
3476 object
= Fget_buffer (object
);
3477 if (BUFFERP (object
) && !NILP (XBUFFER (object
)->name
))
3479 /* Walk all windows looking for buffer, and force update
3480 of each of those windows. */
3482 object
= window_loop (REDISPLAY_BUFFER_WINDOWS
, object
, 0, Qvisible
);
3483 return NILP (object
) ? Qnil
: Qt
;
3486 /* If nothing suitable was found, just return.
3487 We could signal an error, but this feature will typically be used
3488 asynchronously in timers or process sentinels, so we don't. */
3494 temp_output_buffer_show (buf
)
3495 register Lisp_Object buf
;
3497 register struct buffer
*old
= current_buffer
;
3498 register Lisp_Object window
;
3499 register struct window
*w
;
3501 XBUFFER (buf
)->directory
= current_buffer
->directory
;
3504 BUF_SAVE_MODIFF (XBUFFER (buf
)) = MODIFF
;
3508 #if 0 /* rms: there should be no reason for this. */
3509 XBUFFER (buf
)->prevent_redisplay_optimizations_p
= 1;
3511 set_buffer_internal (old
);
3513 if (!EQ (Vtemp_buffer_show_function
, Qnil
))
3514 call1 (Vtemp_buffer_show_function
, buf
);
3517 window
= Fdisplay_buffer (buf
, Qnil
, Qnil
);
3519 if (!EQ (XWINDOW (window
)->frame
, selected_frame
))
3520 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window
)));
3521 Vminibuf_scroll_window
= window
;
3522 w
= XWINDOW (window
);
3523 XSETFASTINT (w
->hscroll
, 0);
3524 XSETFASTINT (w
->min_hscroll
, 0);
3525 set_marker_restricted_both (w
->start
, buf
, BEG
, BEG
);
3526 set_marker_restricted_both (w
->pointm
, buf
, BEG
, BEG
);
3528 /* Run temp-buffer-show-hook, with the chosen window selected
3529 and its buffer current. */
3531 if (!NILP (Vrun_hooks
)
3532 && !NILP (Fboundp (Qtemp_buffer_show_hook
))
3533 && !NILP (Fsymbol_value (Qtemp_buffer_show_hook
)))
3535 int count
= SPECPDL_INDEX ();
3536 Lisp_Object prev_window
, prev_buffer
;
3537 prev_window
= selected_window
;
3538 XSETBUFFER (prev_buffer
, old
);
3540 /* Select the window that was chosen, for running the hook.
3541 Note: Both Fselect_window and select_window_norecord may
3542 set-buffer to the buffer displayed in the window,
3543 so we need to save the current buffer. --stef */
3544 record_unwind_protect (Fset_buffer
, prev_buffer
);
3545 record_unwind_protect (select_window_norecord
, prev_window
);
3546 Fselect_window (window
, Qt
);
3547 Fset_buffer (w
->buffer
);
3548 call1 (Vrun_hooks
, Qtemp_buffer_show_hook
);
3549 unbind_to (count
, Qnil
);
3555 make_dummy_parent (window
)
3559 register struct window
*o
, *p
;
3562 o
= XWINDOW (window
);
3563 p
= allocate_window ();
3564 for (i
= 0; i
< VECSIZE (struct window
); ++i
)
3565 ((struct Lisp_Vector
*) p
)->contents
[i
]
3566 = ((struct Lisp_Vector
*)o
)->contents
[i
];
3567 XSETWINDOW (new, p
);
3569 XSETFASTINT (p
->sequence_number
, ++sequence_number
);
3571 /* Put new into window structure in place of window */
3572 replace_window (window
, new);
3585 DEFUN ("split-window", Fsplit_window
, Ssplit_window
, 0, 3, "",
3586 doc
: /* Split WINDOW, putting SIZE lines in the first of the pair.
3587 WINDOW defaults to selected one and SIZE to half its size.
3588 If optional third arg HORFLAG is non-nil, split side by side
3589 and put SIZE columns in the first of the pair. In that case,
3590 SIZE includes that window's scroll bar, or the divider column to its right. */)
3591 (window
, size
, horflag
)
3592 Lisp_Object window
, size
, horflag
;
3594 register Lisp_Object
new;
3595 register struct window
*o
, *p
;
3597 register int size_int
;
3600 window
= selected_window
;
3602 CHECK_LIVE_WINDOW (window
);
3604 o
= XWINDOW (window
);
3605 fo
= XFRAME (WINDOW_FRAME (o
));
3609 if (!NILP (horflag
))
3610 /* Calculate the size of the left-hand window, by dividing
3611 the usable space in columns by two.
3612 We round up, since the left-hand window may include
3613 a dividing line, while the right-hand may not. */
3614 size_int
= (XFASTINT (o
->total_cols
) + 1) >> 1;
3616 size_int
= XFASTINT (o
->total_lines
) >> 1;
3620 CHECK_NUMBER (size
);
3621 size_int
= XINT (size
);
3624 if (MINI_WINDOW_P (o
))
3625 error ("Attempt to split minibuffer window");
3626 else if (window_fixed_size_p (o
, !NILP (horflag
), 0))
3627 error ("Attempt to split fixed-size window");
3629 check_min_window_sizes ();
3633 if (size_int
< window_min_height
)
3634 error ("Window height %d too small (after splitting)", size_int
);
3635 if (size_int
+ window_min_height
> XFASTINT (o
->total_lines
))
3636 error ("Window height %d too small (after splitting)",
3637 XFASTINT (o
->total_lines
) - size_int
);
3638 if (NILP (o
->parent
)
3639 || NILP (XWINDOW (o
->parent
)->vchild
))
3641 make_dummy_parent (window
);
3643 XWINDOW (new)->vchild
= window
;
3648 if (size_int
< window_min_width
)
3649 error ("Window width %d too small (after splitting)", size_int
);
3651 if (size_int
+ window_min_width
> XFASTINT (o
->total_cols
))
3652 error ("Window width %d too small (after splitting)",
3653 XFASTINT (o
->total_cols
) - size_int
);
3654 if (NILP (o
->parent
)
3655 || NILP (XWINDOW (o
->parent
)->hchild
))
3657 make_dummy_parent (window
);
3659 XWINDOW (new)->hchild
= window
;
3663 /* Now we know that window's parent is a vertical combination
3664 if we are dividing vertically, or a horizontal combination
3665 if we are making side-by-side windows */
3667 windows_or_buffers_changed
++;
3668 FRAME_WINDOW_SIZES_CHANGED (fo
) = 1;
3669 new = make_window ();
3672 p
->frame
= o
->frame
;
3674 if (!NILP (p
->next
))
3675 XWINDOW (p
->next
)->prev
= new;
3678 p
->parent
= o
->parent
;
3680 p
->window_end_valid
= Qnil
;
3681 bzero (&p
->last_cursor
, sizeof p
->last_cursor
);
3683 /* Duplicate special geometry settings. */
3685 p
->left_margin_cols
= o
->left_margin_cols
;
3686 p
->right_margin_cols
= o
->right_margin_cols
;
3687 p
->left_fringe_width
= o
->left_fringe_width
;
3688 p
->right_fringe_width
= o
->right_fringe_width
;
3689 p
->fringes_outside_margins
= o
->fringes_outside_margins
;
3690 p
->scroll_bar_width
= o
->scroll_bar_width
;
3691 p
->vertical_scroll_bar_type
= o
->vertical_scroll_bar_type
;
3693 /* Apportion the available frame space among the two new windows */
3695 if (!NILP (horflag
))
3697 p
->total_lines
= o
->total_lines
;
3698 p
->top_line
= o
->top_line
;
3699 XSETFASTINT (p
->total_cols
, XFASTINT (o
->total_cols
) - size_int
);
3700 XSETFASTINT (o
->total_cols
, size_int
);
3701 XSETFASTINT (p
->left_col
, XFASTINT (o
->left_col
) + size_int
);
3702 adjust_window_margins (p
);
3703 adjust_window_margins (o
);
3707 p
->left_col
= o
->left_col
;
3708 p
->total_cols
= o
->total_cols
;
3709 XSETFASTINT (p
->total_lines
, XFASTINT (o
->total_lines
) - size_int
);
3710 XSETFASTINT (o
->total_lines
, size_int
);
3711 XSETFASTINT (p
->top_line
, XFASTINT (o
->top_line
) + size_int
);
3714 /* Adjust glyph matrices. */
3717 Fset_window_buffer (new, o
->buffer
, Qt
);
3721 DEFUN ("enlarge-window", Fenlarge_window
, Senlarge_window
, 1, 3, "p",
3722 doc
: /* Make current window ARG lines bigger.
3723 From program, optional second arg non-nil means grow sideways ARG columns.
3724 Interactively, if an argument is not given, make the window one line bigger.
3726 Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size
3727 of the siblings above or to the left of the selected window. Only
3728 siblings to the right or below are changed. */)
3729 (arg
, side
, preserve_before
)
3730 register Lisp_Object arg
, side
, preserve_before
;
3733 enlarge_window (selected_window
, XINT (arg
), !NILP (side
),
3734 !NILP (preserve_before
));
3736 if (! NILP (Vwindow_configuration_change_hook
))
3737 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3742 DEFUN ("shrink-window", Fshrink_window
, Sshrink_window
, 1, 3, "p",
3743 doc
: /* Make current window ARG lines smaller.
3744 From program, optional second arg non-nil means shrink sideways arg columns.
3745 Interactively, if an argument is not given, make the window one line smaller.
3747 Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size
3748 of the siblings above or to the left of the selected window. Only
3749 siblings to the right or below are changed. */)
3750 (arg
, side
, preserve_before
)
3751 register Lisp_Object arg
, side
, preserve_before
;
3754 enlarge_window (selected_window
, -XINT (arg
), !NILP (side
),
3755 !NILP (preserve_before
));
3757 if (! NILP (Vwindow_configuration_change_hook
))
3758 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3764 window_height (window
)
3767 register struct window
*p
= XWINDOW (window
);
3768 return WINDOW_TOTAL_LINES (p
);
3772 window_width (window
)
3775 register struct window
*p
= XWINDOW (window
);
3776 return WINDOW_TOTAL_COLS (p
);
3781 *(widthflag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line))
3783 #define CURSIZE(w) \
3784 *(widthflag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines))
3787 /* Enlarge WINDOW by DELTA. WIDTHFLAG non-zero means
3788 increase its width. Siblings of the selected window are resized to
3789 fulfill the size request. If they become too small in the process,
3790 they will be deleted.
3792 If PRESERVE_BEFORE is nonzero, that means don't alter
3793 the siblings to the left or above WINDOW. */
3796 enlarge_window (window
, delta
, widthflag
, preserve_before
)
3798 int delta
, widthflag
, preserve_before
;
3800 Lisp_Object parent
, next
, prev
;
3804 int (*sizefun
) P_ ((Lisp_Object
))
3805 = widthflag
? window_width
: window_height
;
3806 void (*setsizefun
) P_ ((Lisp_Object
, int, int))
3807 = (widthflag
? set_window_width
: set_window_height
);
3809 /* Check values of window_min_width and window_min_height for
3811 check_min_window_sizes ();
3813 /* Give up if this window cannot be resized. */
3814 if (window_fixed_size_p (XWINDOW (window
), widthflag
, 1))
3815 error ("Window is not resizable");
3817 /* Find the parent of the selected window. */
3820 p
= XWINDOW (window
);
3826 error ("No other window to side of this one");
3831 ? !NILP (XWINDOW (parent
)->hchild
)
3832 : !NILP (XWINDOW (parent
)->vchild
))
3838 sizep
= &CURSIZE (window
);
3841 register int maxdelta
;
3843 /* Compute the maximum size increment this window can have. */
3845 if (preserve_before
)
3849 maxdelta
= (*sizefun
) (parent
) - XINT (*sizep
);
3850 /* Subtract size of siblings before, since we can't take that. */
3851 maxdelta
-= XINT (CURBEG (window
)) - XINT (CURBEG (parent
));
3854 maxdelta
= (!NILP (p
->next
) ? ((*sizefun
) (p
->next
)
3855 - window_min_size (XWINDOW (p
->next
),
3860 maxdelta
= (!NILP (parent
) ? (*sizefun
) (parent
) - XINT (*sizep
)
3861 /* This is a main window followed by a minibuffer. */
3862 : !NILP (p
->next
) ? ((*sizefun
) (p
->next
)
3863 - window_min_size (XWINDOW (p
->next
),
3865 /* This is a minibuffer following a main window. */
3866 : !NILP (p
->prev
) ? ((*sizefun
) (p
->prev
)
3867 - window_min_size (XWINDOW (p
->prev
),
3869 /* This is a frame with only one window, a minibuffer-only
3870 or a minibufferless frame. */
3873 if (delta
> maxdelta
)
3874 /* This case traps trying to make the minibuffer
3875 the full frame, or make the only window aside from the
3876 minibuffer the full frame. */
3880 if (XINT (*sizep
) + delta
< window_min_size (XWINDOW (window
), widthflag
, 0, 0))
3882 delete_window (window
);
3889 /* Find the total we can get from other siblings without deleting them. */
3891 for (next
= p
->next
; ! NILP (next
); next
= XWINDOW (next
)->next
)
3892 maximum
+= (*sizefun
) (next
) - window_min_size (XWINDOW (next
),
3894 if (! preserve_before
)
3895 for (prev
= p
->prev
; ! NILP (prev
); prev
= XWINDOW (prev
)->prev
)
3896 maximum
+= (*sizefun
) (prev
) - window_min_size (XWINDOW (prev
),
3899 /* If we can get it all from them without deleting them, do so. */
3900 if (delta
<= maximum
)
3902 Lisp_Object first_unaffected
;
3903 Lisp_Object first_affected
;
3908 first_affected
= window
;
3909 /* Look at one sibling at a time,
3910 moving away from this window in both directions alternately,
3911 and take as much as we can get without deleting that sibling. */
3913 && (!NILP (next
) || (!preserve_before
&& !NILP (prev
))))
3917 int this_one
= ((*sizefun
) (next
)
3918 - window_min_size (XWINDOW (next
),
3919 widthflag
, 0, &fixed_p
));
3922 if (this_one
> delta
)
3925 (*setsizefun
) (next
, (*sizefun
) (next
) - this_one
, 0);
3926 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
3931 next
= XWINDOW (next
)->next
;
3937 if (!preserve_before
&& ! NILP (prev
))
3939 int this_one
= ((*sizefun
) (prev
)
3940 - window_min_size (XWINDOW (prev
),
3941 widthflag
, 0, &fixed_p
));
3944 if (this_one
> delta
)
3947 first_affected
= prev
;
3949 (*setsizefun
) (prev
, (*sizefun
) (prev
) - this_one
, 0);
3950 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
3955 prev
= XWINDOW (prev
)->prev
;
3959 xassert (delta
== 0);
3961 /* Now recalculate the edge positions of all the windows affected,
3962 based on the new sizes. */
3963 first_unaffected
= next
;
3964 prev
= first_affected
;
3965 for (next
= XWINDOW (prev
)->next
; ! EQ (next
, first_unaffected
);
3966 prev
= next
, next
= XWINDOW (next
)->next
)
3968 XSETINT (CURBEG (next
), XINT (CURBEG (prev
)) + (*sizefun
) (prev
));
3969 /* This does not change size of NEXT,
3970 but it propagates the new top edge to its children */
3971 (*setsizefun
) (next
, (*sizefun
) (next
), 0);
3976 register int delta1
;
3977 register int opht
= (*sizefun
) (parent
);
3979 if (opht
<= XINT (*sizep
) + delta
)
3981 /* If trying to grow this window to or beyond size of the parent,
3982 just delete all the sibling windows. */
3983 Lisp_Object start
, tem
, next
;
3985 start
= XWINDOW (parent
)->vchild
;
3987 start
= XWINDOW (parent
)->hchild
;
3989 /* Delete any siblings that come after WINDOW. */
3990 tem
= XWINDOW (window
)->next
;
3991 while (! NILP (tem
))
3993 next
= XWINDOW (tem
)->next
;
3994 delete_window (tem
);
3998 /* Delete any siblings that come after WINDOW.
3999 Note that if START is not WINDOW, then WINDOW still
4000 Fhas siblings, so WINDOW has not yet replaced its parent. */
4002 while (! EQ (tem
, window
))
4004 next
= XWINDOW (tem
)->next
;
4005 delete_window (tem
);
4011 /* Otherwise, make delta1 just right so that if we add
4012 delta1 lines to this window and to the parent, and then
4013 shrink the parent back to its original size, the new
4014 proportional size of this window will increase by delta.
4016 The function size_window will compute the new height h'
4017 of the window from delta1 as:
4020 x = delta1 - delta1/n * n for the 1st resizable child
4023 where n is the number of children that can be resized.
4024 We can ignore x by choosing a delta1 that is a multiple of
4025 n. We want the height of this window to come out as
4035 The number of children n equals the number of resizable
4036 children of this window + 1 because we know window itself
4037 is resizable (otherwise we would have signalled an error. */
4039 struct window
*w
= XWINDOW (window
);
4043 for (s
= w
->next
; !NILP (s
); s
= XWINDOW (s
)->next
)
4044 if (!window_fixed_size_p (XWINDOW (s
), widthflag
, 0))
4046 for (s
= w
->prev
; !NILP (s
); s
= XWINDOW (s
)->prev
)
4047 if (!window_fixed_size_p (XWINDOW (s
), widthflag
, 0))
4052 /* Add delta1 lines or columns to this window, and to the parent,
4053 keeping things consistent while not affecting siblings. */
4054 XSETINT (CURSIZE (parent
), opht
+ delta1
);
4055 (*setsizefun
) (window
, XINT (*sizep
) + delta1
, 0);
4057 /* Squeeze out delta1 lines or columns from our parent,
4058 shriking this window and siblings proportionately.
4059 This brings parent back to correct size.
4060 Delta1 was calculated so this makes this window the desired size,
4061 taking it all out of the siblings. */
4062 (*setsizefun
) (parent
, opht
, 0);
4067 XSETFASTINT (p
->last_modified
, 0);
4068 XSETFASTINT (p
->last_overlay_modified
, 0);
4070 /* Adjust glyph matrices. */
4071 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4079 /***********************************************************************
4080 Resizing Mini-Windows
4081 ***********************************************************************/
4083 static void shrink_window_lowest_first
P_ ((struct window
*, int));
4085 enum save_restore_action
4092 static int save_restore_orig_size
P_ ((struct window
*,
4093 enum save_restore_action
));
4095 /* Shrink windows rooted in window W to HEIGHT. Take the space needed
4096 from lowest windows first. */
4099 shrink_window_lowest_first (w
, height
)
4107 xassert (!MINI_WINDOW_P (w
));
4109 /* Set redisplay hints. */
4110 XSETFASTINT (w
->last_modified
, 0);
4111 XSETFASTINT (w
->last_overlay_modified
, 0);
4112 windows_or_buffers_changed
++;
4113 FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w
))) = 1;
4115 old_height
= XFASTINT (w
->total_lines
);
4116 XSETFASTINT (w
->total_lines
, height
);
4118 if (!NILP (w
->hchild
))
4120 for (child
= w
->hchild
; !NILP (child
); child
= c
->next
)
4122 c
= XWINDOW (child
);
4123 c
->top_line
= w
->top_line
;
4124 shrink_window_lowest_first (c
, height
);
4127 else if (!NILP (w
->vchild
))
4129 Lisp_Object last_child
;
4130 int delta
= old_height
- height
;
4135 /* Find the last child. We are taking space from lowest windows
4136 first, so we iterate over children from the last child
4138 for (child
= w
->vchild
; !NILP (child
); child
= XWINDOW (child
)->next
)
4141 /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */
4142 for (child
= last_child
; delta
&& !NILP (child
); child
= c
->prev
)
4146 c
= XWINDOW (child
);
4147 this_one
= XFASTINT (c
->total_lines
) - MIN_SAFE_WINDOW_HEIGHT
;
4149 if (this_one
> delta
)
4152 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
) - this_one
);
4156 /* Compute new positions. */
4157 last_top
= XINT (w
->top_line
);
4158 for (child
= w
->vchild
; !NILP (child
); child
= c
->next
)
4160 c
= XWINDOW (child
);
4161 c
->top_line
= make_number (last_top
);
4162 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
));
4163 last_top
+= XFASTINT (c
->total_lines
);
4169 /* Save, restore, or check positions and sizes in the window tree
4170 rooted at W. ACTION says what to do.
4172 If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and
4173 orig_total_lines members are valid for all windows in the window
4174 tree. Value is non-zero if they are valid.
4176 If ACTION is SAVE_ORIG_SIZES, save members top and height in
4177 orig_top_line and orig_total_lines for all windows in the tree.
4179 If ACTION is RESTORE_ORIG_SIZES, restore top and height from values
4180 stored in orig_top_line and orig_total_lines for all windows. */
4183 save_restore_orig_size (w
, action
)
4185 enum save_restore_action action
;
4191 if (!NILP (w
->hchild
))
4193 if (!save_restore_orig_size (XWINDOW (w
->hchild
), action
))
4196 else if (!NILP (w
->vchild
))
4198 if (!save_restore_orig_size (XWINDOW (w
->vchild
), action
))
4204 case CHECK_ORIG_SIZES
:
4205 if (!INTEGERP (w
->orig_top_line
) || !INTEGERP (w
->orig_total_lines
))
4209 case SAVE_ORIG_SIZES
:
4210 w
->orig_top_line
= w
->top_line
;
4211 w
->orig_total_lines
= w
->total_lines
;
4212 XSETFASTINT (w
->last_modified
, 0);
4213 XSETFASTINT (w
->last_overlay_modified
, 0);
4216 case RESTORE_ORIG_SIZES
:
4217 xassert (INTEGERP (w
->orig_top_line
) && INTEGERP (w
->orig_total_lines
));
4218 w
->top_line
= w
->orig_top_line
;
4219 w
->total_lines
= w
->orig_total_lines
;
4220 w
->orig_total_lines
= w
->orig_top_line
= Qnil
;
4221 XSETFASTINT (w
->last_modified
, 0);
4222 XSETFASTINT (w
->last_overlay_modified
, 0);
4229 w
= NILP (w
->next
) ? NULL
: XWINDOW (w
->next
);
4236 /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
4237 without deleting other windows. */
4240 grow_mini_window (w
, delta
)
4244 struct frame
*f
= XFRAME (w
->frame
);
4245 struct window
*root
;
4247 xassert (MINI_WINDOW_P (w
));
4248 xassert (delta
>= 0);
4250 /* Check values of window_min_width and window_min_height for
4252 check_min_window_sizes ();
4254 /* Compute how much we can enlarge the mini-window without deleting
4256 root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4259 int min_height
= window_min_size (root
, 0, 0, 0);
4260 if (XFASTINT (root
->total_lines
) - delta
< min_height
)
4261 /* Note that the root window may already be smaller than
4263 delta
= max (0, XFASTINT (root
->total_lines
) - min_height
);
4268 /* Save original window sizes and positions, if not already done. */
4269 if (!save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4270 save_restore_orig_size (root
, SAVE_ORIG_SIZES
);
4272 /* Shrink other windows. */
4273 shrink_window_lowest_first (root
, XFASTINT (root
->total_lines
) - delta
);
4275 /* Grow the mini-window. */
4276 w
->top_line
= make_number (XFASTINT (root
->top_line
) + XFASTINT (root
->total_lines
));
4277 w
->total_lines
= make_number (XFASTINT (w
->total_lines
) + delta
);
4278 XSETFASTINT (w
->last_modified
, 0);
4279 XSETFASTINT (w
->last_overlay_modified
, 0);
4286 /* Shrink mini-window W. If there is recorded info about window sizes
4287 before a call to grow_mini_window, restore recorded window sizes.
4288 Otherwise, if the mini-window is higher than 1 line, resize it to 1
4292 shrink_mini_window (w
)
4295 struct frame
*f
= XFRAME (w
->frame
);
4296 struct window
*root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4298 if (save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4300 save_restore_orig_size (root
, RESTORE_ORIG_SIZES
);
4302 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
4303 windows_or_buffers_changed
= 1;
4305 else if (XFASTINT (w
->total_lines
) > 1)
4307 /* Distribute the additional lines of the mini-window
4308 among the other windows. */
4310 XSETWINDOW (window
, w
);
4311 enlarge_window (window
, 1 - XFASTINT (w
->total_lines
), 0, 0);
4317 /* Mark window cursors off for all windows in the window tree rooted
4318 at W by setting their phys_cursor_on_p flag to zero. Called from
4319 xterm.c, e.g. when a frame is cleared and thereby all cursors on
4320 the frame are cleared. */
4323 mark_window_cursors_off (w
)
4328 if (!NILP (w
->hchild
))
4329 mark_window_cursors_off (XWINDOW (w
->hchild
));
4330 else if (!NILP (w
->vchild
))
4331 mark_window_cursors_off (XWINDOW (w
->vchild
));
4333 w
->phys_cursor_on_p
= 0;
4335 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
4340 /* Return number of lines of text (not counting mode lines) in W. */
4343 window_internal_height (w
)
4346 int ht
= XFASTINT (w
->total_lines
);
4348 if (!MINI_WINDOW_P (w
))
4350 if (!NILP (w
->parent
)
4351 || !NILP (w
->vchild
)
4352 || !NILP (w
->hchild
)
4355 || WINDOW_WANTS_MODELINE_P (w
))
4358 if (WINDOW_WANTS_HEADER_LINE_P (w
))
4366 /* Return the number of columns in W.
4367 Don't count columns occupied by scroll bars or the vertical bar
4368 separating W from the sibling to its right. */
4371 window_box_text_cols (w
)
4374 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
4375 int width
= XINT (w
->total_cols
);
4377 if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w
))
4378 /* Scroll bars occupy a few columns. */
4379 width
-= WINDOW_CONFIG_SCROLL_BAR_COLS (w
);
4380 else if (!FRAME_WINDOW_P (f
)
4381 && !WINDOW_RIGHTMOST_P (w
) && !WINDOW_FULL_WIDTH_P (w
))
4382 /* The column of `|' characters separating side-by-side windows
4383 occupies one column only. */
4386 if (FRAME_WINDOW_P (f
))
4387 /* On window-systems, fringes and display margins cannot be
4388 used for normal text. */
4389 width
-= (WINDOW_FRINGE_COLS (w
)
4390 + WINDOW_LEFT_MARGIN_COLS (w
)
4391 + WINDOW_RIGHT_MARGIN_COLS (w
));
4397 /************************************************************************
4399 ***********************************************************************/
4401 /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
4402 N screen-fulls, which is defined as the height of the window minus
4403 next_screen_context_lines. If WHOLE is zero, scroll up N lines
4404 instead. Negative values of N mean scroll down. NOERROR non-zero
4405 means don't signal an error if we try to move over BEGV or ZV,
4409 window_scroll (window
, n
, whole
, noerror
)
4417 /* If we must, use the pixel-based version which is much slower than
4418 the line-based one but can handle varying line heights. */
4419 if (FRAME_WINDOW_P (XFRAME (XWINDOW (window
)->frame
)))
4420 window_scroll_pixel_based (window
, n
, whole
, noerror
);
4422 window_scroll_line_based (window
, n
, whole
, noerror
);
4428 /* Implementation of window_scroll that works based on pixel line
4429 heights. See the comment of window_scroll for parameter
4433 window_scroll_pixel_based (window
, n
, whole
, noerror
)
4440 struct window
*w
= XWINDOW (window
);
4441 struct text_pos start
;
4443 int this_scroll_margin
;
4445 /* True if we fiddled the window vscroll field without really scrolling. */
4448 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
4450 /* If PT is not visible in WINDOW, move back one half of
4451 the screen. Allow PT to be partially visible, otherwise
4452 something like (scroll-down 1) with PT in the line before
4453 the partially visible one would recenter. */
4454 tem
= Fpos_visible_in_window_p (make_number (PT
), window
, Qt
);
4457 /* Move backward half the height of the window. Performance note:
4458 vmotion used here is about 10% faster, but would give wrong
4459 results for variable height lines. */
4460 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4461 it
.current_y
= it
.last_visible_y
;
4462 move_it_vertically (&it
, - window_box_height (w
) / 2);
4464 /* The function move_iterator_vertically may move over more than
4465 the specified y-distance. If it->w is small, e.g. a
4466 mini-buffer window, we may end up in front of the window's
4467 display area. This is the case when Start displaying at the
4468 start of the line containing PT in this case. */
4469 if (it
.current_y
<= 0)
4471 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4472 move_it_vertically (&it
, 0);
4476 start
= it
.current
.pos
;
4479 /* If scroll_preserve_screen_position is non-zero, we try to set
4480 point in the same window line as it is now, so get that line. */
4481 if (!NILP (Vscroll_preserve_screen_position
))
4483 start_display (&it
, w
, start
);
4484 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4485 preserve_y
= it
.current_y
;
4490 /* Move iterator it from start the specified distance forward or
4491 backward. The result is the new window start. */
4492 start_display (&it
, w
, start
);
4495 int screen_full
= (window_box_height (w
)
4496 - next_screen_context_lines
* FRAME_LINE_HEIGHT (it
.f
));
4497 int dy
= n
* screen_full
;
4499 /* Note that move_it_vertically always moves the iterator to the
4500 start of a line. So, if the last line doesn't have a newline,
4501 we would end up at the start of the line ending at ZV. */
4503 move_it_vertically_backward (&it
, -dy
);
4505 move_it_to (&it
, ZV
, -1, it
.current_y
+ dy
, -1,
4506 MOVE_TO_POS
| MOVE_TO_Y
);
4509 move_it_by_lines (&it
, n
, 1);
4511 /* We failed if we find ZV is already on the screen (scrolling up,
4512 means there's nothing past the end), or if we can't start any
4513 earlier (scrolling down, means there's nothing past the top). */
4514 if ((n
> 0 && IT_CHARPOS (it
) == ZV
)
4515 || (n
< 0 && IT_CHARPOS (it
) == CHARPOS (start
)))
4517 if (IT_CHARPOS (it
) == ZV
)
4519 if (it
.current_y
< it
.last_visible_y
4520 && (it
.current_y
+ it
.max_ascent
+ it
.max_descent
4521 >= it
.last_visible_y
))
4523 /* The last line was only partially visible, make it fully
4525 w
->vscroll
= (it
.last_visible_y
4526 - it
.current_y
+ it
.max_ascent
+ it
.max_descent
);
4527 adjust_glyphs (it
.f
);
4532 Fsignal (Qend_of_buffer
, Qnil
);
4536 if (w
->vscroll
!= 0)
4537 /* The first line was only partially visible, make it fully
4543 Fsignal (Qbeginning_of_buffer
, Qnil
);
4546 /* If control gets here, then we vscrolled. */
4548 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
4550 /* Don't try to change the window start below. */
4556 int pos
= IT_CHARPOS (it
);
4559 /* If in the middle of a multi-glyph character move forward to
4560 the next character. */
4561 if (in_display_vector_p (&it
))
4564 move_it_to (&it
, pos
, -1, -1, -1, MOVE_TO_POS
);
4567 /* Set the window start, and set up the window for redisplay. */
4568 set_marker_restricted (w
->start
, make_number (pos
),
4570 bytepos
= XMARKER (w
->start
)->bytepos
;
4571 w
->start_at_line_beg
= ((pos
== BEGV
|| FETCH_BYTE (bytepos
- 1) == '\n')
4573 w
->update_mode_line
= Qt
;
4574 XSETFASTINT (w
->last_modified
, 0);
4575 XSETFASTINT (w
->last_overlay_modified
, 0);
4576 /* Set force_start so that redisplay_window will run the
4577 window-scroll-functions. */
4578 w
->force_start
= Qt
;
4581 it
.current_y
= it
.vpos
= 0;
4583 /* Preserve the screen position if we must. */
4584 if (preserve_y
>= 0)
4586 move_it_to (&it
, -1, -1, preserve_y
, -1, MOVE_TO_Y
);
4587 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4591 /* Move PT out of scroll margins. */
4592 this_scroll_margin
= max (0, scroll_margin
);
4593 this_scroll_margin
= min (this_scroll_margin
, XFASTINT (w
->total_lines
) / 4);
4594 this_scroll_margin
*= FRAME_LINE_HEIGHT (it
.f
);
4598 /* We moved the window start towards ZV, so PT may be now
4599 in the scroll margin at the top. */
4600 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4601 while (it
.current_y
< this_scroll_margin
)
4603 int prev
= it
.current_y
;
4604 move_it_by_lines (&it
, 1, 1);
4605 if (prev
== it
.current_y
)
4608 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4612 int charpos
, bytepos
;
4614 /* We moved the window start towards BEGV, so PT may be now
4615 in the scroll margin at the bottom. */
4616 move_it_to (&it
, PT
, -1,
4617 it
.last_visible_y
- this_scroll_margin
- 1, -1,
4618 MOVE_TO_POS
| MOVE_TO_Y
);
4620 /* Save our position, in case it's correct. */
4621 charpos
= IT_CHARPOS (it
);
4622 bytepos
= IT_BYTEPOS (it
);
4624 /* See if point is on a partially visible line at the end. */
4625 move_it_by_lines (&it
, 1, 1);
4626 if (it
.current_y
> it
.last_visible_y
)
4627 /* The last line was only partially visible, so back up two
4628 lines to make sure we're on a fully visible line. */
4630 move_it_by_lines (&it
, -2, 0);
4631 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4634 /* No, the position we saved is OK, so use it. */
4635 SET_PT_BOTH (charpos
, bytepos
);
4641 /* Implementation of window_scroll that works based on screen lines.
4642 See the comment of window_scroll for parameter descriptions. */
4645 window_scroll_line_based (window
, n
, whole
, noerror
)
4651 register struct window
*w
= XWINDOW (window
);
4652 register int opoint
= PT
, opoint_byte
= PT_BYTE
;
4653 register int pos
, pos_byte
;
4654 register int ht
= window_internal_height (w
);
4655 register Lisp_Object tem
;
4659 struct position posit
;
4662 /* If scrolling screen-fulls, compute the number of lines to
4663 scroll from the window's height. */
4665 n
*= max (1, ht
- next_screen_context_lines
);
4667 startpos
= marker_position (w
->start
);
4669 posit
= *compute_motion (startpos
, 0, 0, 0,
4671 window_box_text_cols (w
), XINT (w
->hscroll
),
4673 original_vpos
= posit
.vpos
;
4675 XSETFASTINT (tem
, PT
);
4676 tem
= Fpos_visible_in_window_p (tem
, window
, Qnil
);
4680 Fvertical_motion (make_number (- (ht
/ 2)), window
);
4685 lose
= n
< 0 && PT
== BEGV
;
4686 Fvertical_motion (make_number (n
), window
);
4690 SET_PT_BOTH (opoint
, opoint_byte
);
4697 Fsignal (Qbeginning_of_buffer
, Qnil
);
4702 int this_scroll_margin
= scroll_margin
;
4704 /* Don't use a scroll margin that is negative or too large. */
4705 if (this_scroll_margin
< 0)
4706 this_scroll_margin
= 0;
4708 if (XINT (w
->total_lines
) < 4 * scroll_margin
)
4709 this_scroll_margin
= XINT (w
->total_lines
) / 4;
4711 set_marker_restricted_both (w
->start
, w
->buffer
, pos
, pos_byte
);
4712 w
->start_at_line_beg
= bolp
;
4713 w
->update_mode_line
= Qt
;
4714 XSETFASTINT (w
->last_modified
, 0);
4715 XSETFASTINT (w
->last_overlay_modified
, 0);
4716 /* Set force_start so that redisplay_window will run
4717 the window-scroll-functions. */
4718 w
->force_start
= Qt
;
4720 if (whole
&& !NILP (Vscroll_preserve_screen_position
))
4722 SET_PT_BOTH (pos
, pos_byte
);
4723 Fvertical_motion (make_number (original_vpos
), window
);
4725 /* If we scrolled forward, put point enough lines down
4726 that it is outside the scroll margin. */
4731 if (this_scroll_margin
> 0)
4733 SET_PT_BOTH (pos
, pos_byte
);
4734 Fvertical_motion (make_number (this_scroll_margin
), window
);
4740 if (top_margin
<= opoint
)
4741 SET_PT_BOTH (opoint
, opoint_byte
);
4742 else if (!NILP (Vscroll_preserve_screen_position
))
4744 SET_PT_BOTH (pos
, pos_byte
);
4745 Fvertical_motion (make_number (original_vpos
), window
);
4748 SET_PT (top_margin
);
4754 /* If we scrolled backward, put point near the end of the window
4755 but not within the scroll margin. */
4756 SET_PT_BOTH (pos
, pos_byte
);
4757 tem
= Fvertical_motion (make_number (ht
- this_scroll_margin
), window
);
4758 if (XFASTINT (tem
) == ht
- this_scroll_margin
)
4761 bottom_margin
= PT
+ 1;
4763 if (bottom_margin
> opoint
)
4764 SET_PT_BOTH (opoint
, opoint_byte
);
4767 if (!NILP (Vscroll_preserve_screen_position
))
4769 SET_PT_BOTH (pos
, pos_byte
);
4770 Fvertical_motion (make_number (original_vpos
), window
);
4773 Fvertical_motion (make_number (-1), window
);
4782 Fsignal (Qend_of_buffer
, Qnil
);
4787 /* Scroll selected_window up or down. If N is nil, scroll a
4788 screen-full which is defined as the height of the window minus
4789 next_screen_context_lines. If N is the symbol `-', scroll.
4790 DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
4791 up. This is the guts of Fscroll_up and Fscroll_down. */
4794 scroll_command (n
, direction
)
4798 int count
= SPECPDL_INDEX ();
4800 xassert (abs (direction
) == 1);
4802 /* If selected window's buffer isn't current, make it current for
4803 the moment. But don't screw up if window_scroll gets an error. */
4804 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
4806 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
4807 Fset_buffer (XWINDOW (selected_window
)->buffer
);
4809 /* Make redisplay consider other windows than just selected_window. */
4810 ++windows_or_buffers_changed
;
4814 window_scroll (selected_window
, direction
, 1, 0);
4815 else if (EQ (n
, Qminus
))
4816 window_scroll (selected_window
, -direction
, 1, 0);
4819 n
= Fprefix_numeric_value (n
);
4820 window_scroll (selected_window
, XINT (n
) * direction
, 0, 0);
4823 unbind_to (count
, Qnil
);
4826 DEFUN ("scroll-up", Fscroll_up
, Sscroll_up
, 0, 1, "P",
4827 doc
: /* Scroll text of current window upward ARG lines; or near full screen if no ARG.
4828 A near full screen is `next-screen-context-lines' less than a full screen.
4829 Negative ARG means scroll downward.
4830 If ARG is the atom `-', scroll downward by nearly full screen.
4831 When calling from a program, supply as argument a number, nil, or `-'. */)
4835 scroll_command (arg
, 1);
4839 DEFUN ("scroll-down", Fscroll_down
, Sscroll_down
, 0, 1, "P",
4840 doc
: /* Scroll text of current window down ARG lines; or near full screen if no ARG.
4841 A near full screen is `next-screen-context-lines' less than a full screen.
4842 Negative ARG means scroll upward.
4843 If ARG is the atom `-', scroll upward by nearly full screen.
4844 When calling from a program, supply as argument a number, nil, or `-'. */)
4848 scroll_command (arg
, -1);
4852 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling
, Sother_window_for_scrolling
, 0, 0, 0,
4853 doc
: /* Return the other window for \"other window scroll\" commands.
4854 If in the minibuffer, `minibuffer-scroll-window' if non-nil
4855 specifies the window.
4856 If `other-window-scroll-buffer' is non-nil, a window
4857 showing that buffer is used. */)
4862 if (MINI_WINDOW_P (XWINDOW (selected_window
))
4863 && !NILP (Vminibuf_scroll_window
))
4864 window
= Vminibuf_scroll_window
;
4865 /* If buffer is specified, scroll that buffer. */
4866 else if (!NILP (Vother_window_scroll_buffer
))
4868 window
= Fget_buffer_window (Vother_window_scroll_buffer
, Qnil
);
4870 window
= Fdisplay_buffer (Vother_window_scroll_buffer
, Qt
, Qnil
);
4874 /* Nothing specified; look for a neighboring window on the same
4876 window
= Fnext_window (selected_window
, Qnil
, Qnil
);
4878 if (EQ (window
, selected_window
))
4879 /* That didn't get us anywhere; look for a window on another
4882 window
= Fnext_window (window
, Qnil
, Qt
);
4883 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window
))))
4884 && ! EQ (window
, selected_window
));
4887 CHECK_LIVE_WINDOW (window
);
4889 if (EQ (window
, selected_window
))
4890 error ("There is no other window");
4895 DEFUN ("scroll-other-window", Fscroll_other_window
, Sscroll_other_window
, 0, 1, "P",
4896 doc
: /* Scroll next window upward ARG lines; or near full screen if no ARG.
4897 A near full screen is `next-screen-context-lines' less than a full screen.
4898 The next window is the one below the current one; or the one at the top
4899 if the current one is at the bottom. Negative ARG means scroll downward.
4900 If ARG is the atom `-', scroll downward by nearly full screen.
4901 When calling from a program, supply as argument a number, nil, or `-'.
4903 If in the minibuffer, `minibuffer-scroll-window' if non-nil
4904 specifies the window to scroll.
4905 If `other-window-scroll-buffer' is non-nil, scroll the window
4906 showing that buffer, popping the buffer up if necessary. */)
4912 int count
= SPECPDL_INDEX ();
4914 window
= Fother_window_for_scrolling ();
4915 w
= XWINDOW (window
);
4917 /* Don't screw up if window_scroll gets an error. */
4918 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
4919 ++windows_or_buffers_changed
;
4921 Fset_buffer (w
->buffer
);
4922 SET_PT (marker_position (w
->pointm
));
4925 window_scroll (window
, 1, 1, 1);
4926 else if (EQ (arg
, Qminus
))
4927 window_scroll (window
, -1, 1, 1);
4933 window_scroll (window
, XINT (arg
), 0, 1);
4936 set_marker_both (w
->pointm
, Qnil
, PT
, PT_BYTE
);
4937 unbind_to (count
, Qnil
);
4942 DEFUN ("scroll-left", Fscroll_left
, Sscroll_left
, 0, 1, "P",
4943 doc
: /* Scroll selected window display ARG columns left.
4944 Default for ARG is window width minus 2.
4945 Value is the total amount of leftward horizontal scrolling in
4946 effect after the change.
4947 If `automatic-hscrolling' is non-nil, the argument ARG modifies
4948 a lower bound for automatic scrolling, i.e. automatic scrolling
4949 will not scroll a window to a column less than the value returned
4950 by this function. */)
4952 register Lisp_Object arg
;
4956 struct window
*w
= XWINDOW (selected_window
);
4959 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
4961 arg
= Fprefix_numeric_value (arg
);
4963 hscroll
= XINT (w
->hscroll
) + XINT (arg
);
4964 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
4966 if (interactive_p (0))
4967 w
->min_hscroll
= w
->hscroll
;
4972 DEFUN ("scroll-right", Fscroll_right
, Sscroll_right
, 0, 1, "P",
4973 doc
: /* Scroll selected window display ARG columns right.
4974 Default for ARG is window width minus 2.
4975 Value is the total amount of leftward horizontal scrolling in
4976 effect after the change.
4977 If `automatic-hscrolling' is non-nil, the argument ARG modifies
4978 a lower bound for automatic scrolling, i.e. automatic scrolling
4979 will not scroll a window to a column less than the value returned
4980 by this function. */)
4982 register Lisp_Object arg
;
4986 struct window
*w
= XWINDOW (selected_window
);
4989 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
4991 arg
= Fprefix_numeric_value (arg
);
4993 hscroll
= XINT (w
->hscroll
) - XINT (arg
);
4994 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
4996 if (interactive_p (0))
4997 w
->min_hscroll
= w
->hscroll
;
5002 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window
, Sminibuffer_selected_window
, 0, 0, 0,
5003 doc
: /* Return the window which was selected when entering the minibuffer.
5004 Returns nil, if current window is not a minibuffer window. */)
5007 if (minibuf_level
> 0
5008 && MINI_WINDOW_P (XWINDOW (selected_window
))
5009 && WINDOW_LIVE_P (minibuf_selected_window
))
5010 return minibuf_selected_window
;
5015 /* Value is the number of lines actually displayed in window W,
5016 as opposed to its height. */
5019 displayed_window_lines (w
)
5023 struct text_pos start
;
5024 int height
= window_box_height (w
);
5025 struct buffer
*old_buffer
;
5028 if (XBUFFER (w
->buffer
) != current_buffer
)
5030 old_buffer
= current_buffer
;
5031 set_buffer_internal (XBUFFER (w
->buffer
));
5036 /* In case W->start is out of the accessible range, do something
5037 reasonable. This happens in Info mode when Info-scroll-down
5038 calls (recenter -1) while W->start is 1. */
5039 if (XMARKER (w
->start
)->charpos
< BEGV
)
5040 SET_TEXT_POS (start
, BEGV
, BEGV_BYTE
);
5041 else if (XMARKER (w
->start
)->charpos
> ZV
)
5042 SET_TEXT_POS (start
, ZV
, ZV_BYTE
);
5044 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5046 start_display (&it
, w
, start
);
5047 move_it_vertically (&it
, height
);
5048 bottom_y
= line_bottom_y (&it
);
5050 /* rms: On a non-window display,
5051 the value of it.vpos at the bottom of the screen
5052 seems to be 1 larger than window_box_height (w).
5053 This kludge fixes a bug whereby (move-to-window-line -1)
5054 when ZV is on the last screen line
5055 moves to the previous screen line instead of the last one. */
5056 if (! FRAME_WINDOW_P (XFRAME (w
->frame
)))
5059 /* Add in empty lines at the bottom of the window. */
5060 if (bottom_y
< height
)
5062 int uy
= FRAME_LINE_HEIGHT (it
.f
);
5063 it
.vpos
+= (height
- bottom_y
+ uy
- 1) / uy
;
5067 set_buffer_internal (old_buffer
);
5073 DEFUN ("recenter", Frecenter
, Srecenter
, 0, 1, "P",
5074 doc
: /* Center point in window and redisplay frame.
5075 With prefix argument ARG, recenter putting point on screen line ARG
5076 relative to the current window. If ARG is negative, it counts up from the
5077 bottom of the window. (ARG should be less than the height of the window.)
5079 If ARG is omitted or nil, erase the entire frame and then
5080 redraw with point in the center of the current window.
5081 Just C-u as prefix means put point in the center of the window
5082 and redisplay normally--don't erase and redraw the frame. */)
5084 register Lisp_Object arg
;
5086 struct window
*w
= XWINDOW (selected_window
);
5087 struct buffer
*buf
= XBUFFER (w
->buffer
);
5088 struct buffer
*obuf
= current_buffer
;
5090 int charpos
, bytepos
;
5092 /* If redisplay is suppressed due to an error, try again. */
5093 obuf
->display_error_modiff
= 0;
5099 /* Invalidate pixel data calculated for all compositions. */
5100 for (i
= 0; i
< n_compositions
; i
++)
5101 composition_table
[i
]->font
= NULL
;
5103 Fredraw_frame (w
->frame
);
5104 SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w
)));
5107 else if (CONSP (arg
)) /* Just C-u. */
5111 arg
= Fprefix_numeric_value (arg
);
5115 set_buffer_internal (buf
);
5117 /* Handle centering on a graphical frame specially. Such frames can
5118 have variable-height lines and centering point on the basis of
5119 line counts would lead to strange effects. */
5120 if (FRAME_WINDOW_P (XFRAME (w
->frame
)))
5127 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5128 start_display (&it
, w
, pt
);
5129 move_it_vertically (&it
, - window_box_height (w
) / 2);
5130 charpos
= IT_CHARPOS (it
);
5131 bytepos
= IT_BYTEPOS (it
);
5133 else if (XINT (arg
) < 0)
5137 int y0
, y1
, h
, nlines
;
5139 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5140 start_display (&it
, w
, pt
);
5143 /* The amount of pixels we have to move back is the window
5144 height minus what's displayed in the line containing PT,
5145 and the lines below. */
5146 nlines
= - XINT (arg
) - 1;
5147 move_it_by_lines (&it
, nlines
, 1);
5149 y1
= line_bottom_y (&it
);
5151 /* If we can't move down NLINES lines because we hit
5152 the end of the buffer, count in some empty lines. */
5153 if (it
.vpos
< nlines
)
5154 y1
+= (nlines
- it
.vpos
) * FRAME_LINE_HEIGHT (it
.f
);
5156 h
= window_box_height (w
) - (y1
- y0
);
5158 start_display (&it
, w
, pt
);
5159 move_it_vertically (&it
, - h
);
5160 charpos
= IT_CHARPOS (it
);
5161 bytepos
= IT_BYTEPOS (it
);
5165 struct position pos
;
5166 pos
= *vmotion (PT
, - XINT (arg
), w
);
5167 charpos
= pos
.bufpos
;
5168 bytepos
= pos
.bytepos
;
5173 struct position pos
;
5174 int ht
= window_internal_height (w
);
5177 arg
= make_number (ht
/ 2);
5178 else if (XINT (arg
) < 0)
5179 arg
= make_number (XINT (arg
) + ht
);
5181 pos
= *vmotion (PT
, - XINT (arg
), w
);
5182 charpos
= pos
.bufpos
;
5183 bytepos
= pos
.bytepos
;
5186 /* Set the new window start. */
5187 set_marker_both (w
->start
, w
->buffer
, charpos
, bytepos
);
5188 w
->window_end_valid
= Qnil
;
5190 w
->optional_new_start
= Qt
;
5192 if (bytepos
== BEGV_BYTE
|| FETCH_BYTE (bytepos
- 1) == '\n')
5193 w
->start_at_line_beg
= Qt
;
5195 w
->start_at_line_beg
= Qnil
;
5197 set_buffer_internal (obuf
);
5202 DEFUN ("window-text-height", Fwindow_text_height
, Swindow_text_height
,
5204 doc
: /* Return the height in lines of the text display area of WINDOW.
5205 This doesn't include the mode-line (or header-line if any) or any
5206 partial-height lines in the text display area. */)
5210 struct window
*w
= decode_window (window
);
5211 int pixel_height
= window_box_height (w
);
5212 int line_height
= pixel_height
/ FRAME_LINE_HEIGHT (XFRAME (w
->frame
));
5213 return make_number (line_height
);
5218 DEFUN ("move-to-window-line", Fmove_to_window_line
, Smove_to_window_line
,
5220 doc
: /* Position point relative to window.
5221 With no argument, position point at center of window.
5222 An argument specifies vertical position within the window;
5223 zero means top of window, negative means relative to bottom of window. */)
5227 struct window
*w
= XWINDOW (selected_window
);
5231 window
= selected_window
;
5232 start
= marker_position (w
->start
);
5233 if (start
< BEGV
|| start
> ZV
)
5235 int height
= window_internal_height (w
);
5236 Fvertical_motion (make_number (- (height
/ 2)), window
);
5237 set_marker_both (w
->start
, w
->buffer
, PT
, PT_BYTE
);
5238 w
->start_at_line_beg
= Fbolp ();
5239 w
->force_start
= Qt
;
5242 Fgoto_char (w
->start
);
5244 lines
= displayed_window_lines (w
);
5246 XSETFASTINT (arg
, lines
/ 2);
5249 arg
= Fprefix_numeric_value (arg
);
5251 XSETINT (arg
, XINT (arg
) + lines
);
5254 /* Skip past a partially visible first line. */
5256 XSETINT (arg
, XINT (arg
) + 1);
5258 return Fvertical_motion (arg
, window
);
5263 /***********************************************************************
5264 Window Configuration
5265 ***********************************************************************/
5267 struct save_window_data
5269 EMACS_INT size_from_Lisp_Vector_struct
;
5270 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5271 Lisp_Object frame_cols
, frame_lines
, frame_menu_bar_lines
;
5272 Lisp_Object frame_tool_bar_lines
;
5273 Lisp_Object selected_frame
;
5274 Lisp_Object current_window
;
5275 Lisp_Object current_buffer
;
5276 Lisp_Object minibuf_scroll_window
;
5277 Lisp_Object minibuf_selected_window
;
5278 Lisp_Object root_window
;
5279 Lisp_Object focus_frame
;
5280 /* Record the values of window-min-width and window-min-height
5281 so that window sizes remain consistent with them. */
5282 Lisp_Object min_width
, min_height
;
5283 /* A vector, each of whose elements is a struct saved_window
5285 Lisp_Object saved_windows
;
5288 /* This is saved as a Lisp_Vector */
5291 /* these first two must agree with struct Lisp_Vector in lisp.h */
5292 EMACS_INT size_from_Lisp_Vector_struct
;
5293 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5296 Lisp_Object buffer
, start
, pointm
, mark
;
5297 Lisp_Object left_col
, top_line
, total_cols
, total_lines
;
5298 Lisp_Object hscroll
, min_hscroll
;
5299 Lisp_Object parent
, prev
;
5300 Lisp_Object start_at_line_beg
;
5301 Lisp_Object display_table
;
5302 Lisp_Object orig_top_line
, orig_total_lines
;
5303 Lisp_Object left_margin_cols
, right_margin_cols
;
5304 Lisp_Object left_fringe_width
, right_fringe_width
, fringes_outside_margins
;
5305 Lisp_Object scroll_bar_width
, vertical_scroll_bar_type
;
5308 #define SAVED_WINDOW_VECTOR_SIZE 24 /* Arg to Fmake_vector */
5310 #define SAVED_WINDOW_N(swv,n) \
5311 ((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
5313 DEFUN ("window-configuration-p", Fwindow_configuration_p
, Swindow_configuration_p
, 1, 1, 0,
5314 doc
: /* Return t if OBJECT is a window-configuration object. */)
5318 if (WINDOW_CONFIGURATIONP (object
))
5323 DEFUN ("window-configuration-frame", Fwindow_configuration_frame
, Swindow_configuration_frame
, 1, 1, 0,
5324 doc
: /* Return the frame that CONFIG, a window-configuration object, is about. */)
5328 register struct save_window_data
*data
;
5329 struct Lisp_Vector
*saved_windows
;
5331 if (! WINDOW_CONFIGURATIONP (config
))
5332 wrong_type_argument (Qwindow_configuration_p
, config
);
5334 data
= (struct save_window_data
*) XVECTOR (config
);
5335 saved_windows
= XVECTOR (data
->saved_windows
);
5336 return XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5339 DEFUN ("set-window-configuration", Fset_window_configuration
,
5340 Sset_window_configuration
, 1, 1, 0,
5341 doc
: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
5342 CONFIGURATION must be a value previously returned
5343 by `current-window-configuration' (which see).
5344 If CONFIGURATION was made from a frame that is now deleted,
5345 only frame-independent values can be restored. In this case,
5346 the return value is nil. Otherwise the value is t. */)
5348 Lisp_Object configuration
;
5350 register struct save_window_data
*data
;
5351 struct Lisp_Vector
*saved_windows
;
5352 Lisp_Object new_current_buffer
;
5357 while (!WINDOW_CONFIGURATIONP (configuration
))
5358 wrong_type_argument (Qwindow_configuration_p
, configuration
);
5360 data
= (struct save_window_data
*) XVECTOR (configuration
);
5361 saved_windows
= XVECTOR (data
->saved_windows
);
5363 new_current_buffer
= data
->current_buffer
;
5364 if (NILP (XBUFFER (new_current_buffer
)->name
))
5365 new_current_buffer
= Qnil
;
5368 if (XBUFFER (new_current_buffer
) == current_buffer
)
5371 old_point
= BUF_PT (XBUFFER (new_current_buffer
));
5374 frame
= XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5377 /* If f is a dead frame, don't bother rebuilding its window tree.
5378 However, there is other stuff we should still try to do below. */
5379 if (FRAME_LIVE_P (f
))
5381 register struct window
*w
;
5382 register struct saved_window
*p
;
5383 struct window
*root_window
;
5384 struct window
**leaf_windows
;
5388 /* If the frame has been resized since this window configuration was
5389 made, we change the frame to the size specified in the
5390 configuration, restore the configuration, and then resize it
5391 back. We keep track of the prevailing height in these variables. */
5392 int previous_frame_lines
= FRAME_LINES (f
);
5393 int previous_frame_cols
= FRAME_COLS (f
);
5394 int previous_frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
5395 int previous_frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
5397 /* The mouse highlighting code could get screwed up
5398 if it runs during this. */
5401 if (XFASTINT (data
->frame_lines
) != previous_frame_lines
5402 || XFASTINT (data
->frame_cols
) != previous_frame_cols
)
5403 change_frame_size (f
, XFASTINT (data
->frame_lines
),
5404 XFASTINT (data
->frame_cols
), 0, 0, 0);
5405 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
5406 if (XFASTINT (data
->frame_menu_bar_lines
)
5407 != previous_frame_menu_bar_lines
)
5408 x_set_menu_bar_lines (f
, data
->frame_menu_bar_lines
, make_number (0));
5409 #ifdef HAVE_WINDOW_SYSTEM
5410 if (XFASTINT (data
->frame_tool_bar_lines
)
5411 != previous_frame_tool_bar_lines
)
5412 x_set_tool_bar_lines (f
, data
->frame_tool_bar_lines
, make_number (0));
5416 /* "Swap out" point from the selected window
5417 into its buffer. We do this now, before
5418 restoring the window contents, and prevent it from
5419 being done later on when we select a new window. */
5420 if (! NILP (XWINDOW (selected_window
)->buffer
))
5422 w
= XWINDOW (selected_window
);
5423 set_marker_both (w
->pointm
,
5425 BUF_PT (XBUFFER (w
->buffer
)),
5426 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5429 windows_or_buffers_changed
++;
5430 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
5432 /* Problem: Freeing all matrices and later allocating them again
5433 is a serious redisplay flickering problem. What we would
5434 really like to do is to free only those matrices not reused
5436 root_window
= XWINDOW (FRAME_ROOT_WINDOW (f
));
5438 = (struct window
**) alloca (count_windows (root_window
)
5439 * sizeof (struct window
*));
5440 n_leaf_windows
= get_leaf_windows (root_window
, leaf_windows
, 0);
5442 /* Temporarily avoid any problems with windows that are smaller
5443 than they are supposed to be. */
5444 window_min_height
= 1;
5445 window_min_width
= 1;
5448 Mark all windows now on frame as "deleted".
5449 Restoring the new configuration "undeletes" any that are in it.
5451 Save their current buffers in their height fields, since we may
5452 need it later, if a buffer saved in the configuration is now
5454 delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
5456 for (k
= 0; k
< saved_windows
->size
; k
++)
5458 p
= SAVED_WINDOW_N (saved_windows
, k
);
5459 w
= XWINDOW (p
->window
);
5462 if (!NILP (p
->parent
))
5463 w
->parent
= SAVED_WINDOW_N (saved_windows
,
5464 XFASTINT (p
->parent
))->window
;
5468 if (!NILP (p
->prev
))
5470 w
->prev
= SAVED_WINDOW_N (saved_windows
,
5471 XFASTINT (p
->prev
))->window
;
5472 XWINDOW (w
->prev
)->next
= p
->window
;
5477 if (!NILP (w
->parent
))
5479 if (EQ (p
->total_cols
, XWINDOW (w
->parent
)->total_cols
))
5481 XWINDOW (w
->parent
)->vchild
= p
->window
;
5482 XWINDOW (w
->parent
)->hchild
= Qnil
;
5486 XWINDOW (w
->parent
)->hchild
= p
->window
;
5487 XWINDOW (w
->parent
)->vchild
= Qnil
;
5492 /* If we squirreled away the buffer in the window's height,
5494 if (BUFFERP (w
->total_lines
))
5495 w
->buffer
= w
->total_lines
;
5496 w
->left_col
= p
->left_col
;
5497 w
->top_line
= p
->top_line
;
5498 w
->total_cols
= p
->total_cols
;
5499 w
->total_lines
= p
->total_lines
;
5500 w
->hscroll
= p
->hscroll
;
5501 w
->min_hscroll
= p
->min_hscroll
;
5502 w
->display_table
= p
->display_table
;
5503 w
->orig_top_line
= p
->orig_top_line
;
5504 w
->orig_total_lines
= p
->orig_total_lines
;
5505 w
->left_margin_cols
= p
->left_margin_cols
;
5506 w
->right_margin_cols
= p
->right_margin_cols
;
5507 w
->left_fringe_width
= p
->left_fringe_width
;
5508 w
->right_fringe_width
= p
->right_fringe_width
;
5509 w
->fringes_outside_margins
= p
->fringes_outside_margins
;
5510 w
->scroll_bar_width
= p
->scroll_bar_width
;
5511 w
->vertical_scroll_bar_type
= p
->vertical_scroll_bar_type
;
5512 XSETFASTINT (w
->last_modified
, 0);
5513 XSETFASTINT (w
->last_overlay_modified
, 0);
5515 /* Reinstall the saved buffer and pointers into it. */
5516 if (NILP (p
->buffer
))
5517 w
->buffer
= p
->buffer
;
5520 if (!NILP (XBUFFER (p
->buffer
)->name
))
5521 /* If saved buffer is alive, install it. */
5523 w
->buffer
= p
->buffer
;
5524 w
->start_at_line_beg
= p
->start_at_line_beg
;
5525 set_marker_restricted (w
->start
, p
->start
, w
->buffer
);
5526 set_marker_restricted (w
->pointm
, p
->pointm
, w
->buffer
);
5527 Fset_marker (XBUFFER (w
->buffer
)->mark
,
5528 p
->mark
, w
->buffer
);
5530 /* As documented in Fcurrent_window_configuration, don't
5531 restore the location of point in the buffer which was
5532 current when the window configuration was recorded. */
5533 if (!EQ (p
->buffer
, new_current_buffer
)
5534 && XBUFFER (p
->buffer
) == current_buffer
)
5535 Fgoto_char (w
->pointm
);
5537 else if (NILP (w
->buffer
) || NILP (XBUFFER (w
->buffer
)->name
))
5538 /* Else unless window has a live buffer, get one. */
5540 w
->buffer
= Fcdr (Fcar (Vbuffer_alist
));
5541 /* This will set the markers to beginning of visible
5543 set_marker_restricted (w
->start
, make_number (0), w
->buffer
);
5544 set_marker_restricted (w
->pointm
, make_number (0),w
->buffer
);
5545 w
->start_at_line_beg
= Qt
;
5548 /* Keeping window's old buffer; make sure the markers
5551 /* Set window markers at start of visible range. */
5552 if (XMARKER (w
->start
)->buffer
== 0)
5553 set_marker_restricted (w
->start
, make_number (0),
5555 if (XMARKER (w
->pointm
)->buffer
== 0)
5556 set_marker_restricted_both (w
->pointm
, w
->buffer
,
5557 BUF_PT (XBUFFER (w
->buffer
)),
5558 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5559 w
->start_at_line_beg
= Qt
;
5564 FRAME_ROOT_WINDOW (f
) = data
->root_window
;
5565 /* Prevent "swapping out point" in the old selected window
5566 using the buffer that has been restored into it.
5567 Use the point value from the beginning of this function
5568 since unshow_buffer (called from delete_all_subwindows)
5569 could have altered it. */
5570 selected_window
= Qnil
;
5571 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
))
5572 set_marker_restricted (XWINDOW (data
->current_window
)->pointm
,
5573 make_number (old_point
),
5574 XWINDOW (data
->current_window
)->buffer
);
5576 Fselect_window (data
->current_window
, Qnil
);
5577 XBUFFER (XWINDOW (selected_window
)->buffer
)->last_selected_window
5580 if (NILP (data
->focus_frame
)
5581 || (FRAMEP (data
->focus_frame
)
5582 && FRAME_LIVE_P (XFRAME (data
->focus_frame
))))
5583 Fredirect_frame_focus (frame
, data
->focus_frame
);
5585 #if 0 /* I don't understand why this is needed, and it causes problems
5586 when the frame's old selected window has been deleted. */
5587 if (f
!= selected_frame
&& FRAME_WINDOW_P (f
))
5588 do_switch_frame (WINDOW_FRAME (XWINDOW (data
->root_window
)),
5592 /* Set the screen height to the value it had before this function. */
5593 if (previous_frame_lines
!= FRAME_LINES (f
)
5594 || previous_frame_cols
!= FRAME_COLS (f
))
5595 change_frame_size (f
, previous_frame_lines
, previous_frame_cols
,
5597 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
5598 if (previous_frame_menu_bar_lines
!= FRAME_MENU_BAR_LINES (f
))
5599 x_set_menu_bar_lines (f
, make_number (previous_frame_menu_bar_lines
),
5601 #ifdef HAVE_WINDOW_SYSTEM
5602 if (previous_frame_tool_bar_lines
!= FRAME_TOOL_BAR_LINES (f
))
5603 x_set_tool_bar_lines (f
, make_number (previous_frame_tool_bar_lines
),
5608 /* Now, free glyph matrices in windows that were not reused. */
5609 for (i
= n
= 0; i
< n_leaf_windows
; ++i
)
5611 if (NILP (leaf_windows
[i
]->buffer
))
5613 /* Assert it's not reused as a combination. */
5614 xassert (NILP (leaf_windows
[i
]->hchild
)
5615 && NILP (leaf_windows
[i
]->vchild
));
5616 free_window_matrices (leaf_windows
[i
]);
5618 else if (EQ (leaf_windows
[i
]->buffer
, new_current_buffer
))
5626 /* Fselect_window will have made f the selected frame, so we
5627 reselect the proper frame here. Fhandle_switch_frame will change the
5628 selected window too, but that doesn't make the call to
5629 Fselect_window above totally superfluous; it still sets f's
5631 if (FRAME_LIVE_P (XFRAME (data
->selected_frame
)))
5632 do_switch_frame (data
->selected_frame
, 0, 0);
5634 if (! NILP (Vwindow_configuration_change_hook
)
5635 && ! NILP (Vrun_hooks
))
5636 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
5639 if (!NILP (new_current_buffer
))
5640 Fset_buffer (new_current_buffer
);
5642 /* Restore the minimum heights recorded in the configuration. */
5643 window_min_height
= XINT (data
->min_height
);
5644 window_min_width
= XINT (data
->min_width
);
5646 Vminibuf_scroll_window
= data
->minibuf_scroll_window
;
5647 minibuf_selected_window
= data
->minibuf_selected_window
;
5649 return (FRAME_LIVE_P (f
) ? Qt
: Qnil
);
5652 /* Mark all windows now on frame as deleted
5653 by setting their buffers to nil. */
5656 delete_all_subwindows (w
)
5657 register struct window
*w
;
5659 if (!NILP (w
->next
))
5660 delete_all_subwindows (XWINDOW (w
->next
));
5661 if (!NILP (w
->vchild
))
5662 delete_all_subwindows (XWINDOW (w
->vchild
));
5663 if (!NILP (w
->hchild
))
5664 delete_all_subwindows (XWINDOW (w
->hchild
));
5666 w
->total_lines
= w
->buffer
; /* See Fset_window_configuration for excuse. */
5668 if (!NILP (w
->buffer
))
5671 /* We set all three of these fields to nil, to make sure that we can
5672 distinguish this dead window from any live window. Live leaf
5673 windows will have buffer set, and combination windows will have
5674 vchild or hchild set. */
5679 Vwindow_list
= Qnil
;
5683 count_windows (window
)
5684 register struct window
*window
;
5686 register int count
= 1;
5687 if (!NILP (window
->next
))
5688 count
+= count_windows (XWINDOW (window
->next
));
5689 if (!NILP (window
->vchild
))
5690 count
+= count_windows (XWINDOW (window
->vchild
));
5691 if (!NILP (window
->hchild
))
5692 count
+= count_windows (XWINDOW (window
->hchild
));
5697 /* Fill vector FLAT with leaf windows under W, starting at index I.
5698 Value is last index + 1. */
5701 get_leaf_windows (w
, flat
, i
)
5703 struct window
**flat
;
5708 if (!NILP (w
->hchild
))
5709 i
= get_leaf_windows (XWINDOW (w
->hchild
), flat
, i
);
5710 else if (!NILP (w
->vchild
))
5711 i
= get_leaf_windows (XWINDOW (w
->vchild
), flat
, i
);
5715 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
5722 /* Return a pointer to the glyph W's physical cursor is on. Value is
5723 null if W's current matrix is invalid, so that no meaningfull glyph
5727 get_phys_cursor_glyph (w
)
5730 struct glyph_row
*row
;
5731 struct glyph
*glyph
;
5733 if (w
->phys_cursor
.vpos
>= 0
5734 && w
->phys_cursor
.vpos
< w
->current_matrix
->nrows
5735 && (row
= MATRIX_ROW (w
->current_matrix
, w
->phys_cursor
.vpos
),
5737 && row
->used
[TEXT_AREA
] > w
->phys_cursor
.hpos
)
5738 glyph
= row
->glyphs
[TEXT_AREA
] + w
->phys_cursor
.hpos
;
5747 save_window_save (window
, vector
, i
)
5749 struct Lisp_Vector
*vector
;
5752 register struct saved_window
*p
;
5753 register struct window
*w
;
5754 register Lisp_Object tem
;
5756 for (;!NILP (window
); window
= w
->next
)
5758 p
= SAVED_WINDOW_N (vector
, i
);
5759 w
= XWINDOW (window
);
5761 XSETFASTINT (w
->temslot
, i
++);
5763 p
->buffer
= w
->buffer
;
5764 p
->left_col
= w
->left_col
;
5765 p
->top_line
= w
->top_line
;
5766 p
->total_cols
= w
->total_cols
;
5767 p
->total_lines
= w
->total_lines
;
5768 p
->hscroll
= w
->hscroll
;
5769 p
->min_hscroll
= w
->min_hscroll
;
5770 p
->display_table
= w
->display_table
;
5771 p
->orig_top_line
= w
->orig_top_line
;
5772 p
->orig_total_lines
= w
->orig_total_lines
;
5773 p
->left_margin_cols
= w
->left_margin_cols
;
5774 p
->right_margin_cols
= w
->right_margin_cols
;
5775 p
->left_fringe_width
= w
->left_fringe_width
;
5776 p
->right_fringe_width
= w
->right_fringe_width
;
5777 p
->fringes_outside_margins
= w
->fringes_outside_margins
;
5778 p
->scroll_bar_width
= w
->scroll_bar_width
;
5779 p
->vertical_scroll_bar_type
= w
->vertical_scroll_bar_type
;
5780 if (!NILP (w
->buffer
))
5782 /* Save w's value of point in the window configuration.
5783 If w is the selected window, then get the value of point
5784 from the buffer; pointm is garbage in the selected window. */
5785 if (EQ (window
, selected_window
))
5787 p
->pointm
= Fmake_marker ();
5788 set_marker_both (p
->pointm
, w
->buffer
,
5789 BUF_PT (XBUFFER (w
->buffer
)),
5790 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5793 p
->pointm
= Fcopy_marker (w
->pointm
, Qnil
);
5795 p
->start
= Fcopy_marker (w
->start
, Qnil
);
5796 p
->start_at_line_beg
= w
->start_at_line_beg
;
5798 tem
= XBUFFER (w
->buffer
)->mark
;
5799 p
->mark
= Fcopy_marker (tem
, Qnil
);
5806 p
->start_at_line_beg
= Qnil
;
5809 if (NILP (w
->parent
))
5812 p
->parent
= XWINDOW (w
->parent
)->temslot
;
5817 p
->prev
= XWINDOW (w
->prev
)->temslot
;
5819 if (!NILP (w
->vchild
))
5820 i
= save_window_save (w
->vchild
, vector
, i
);
5821 if (!NILP (w
->hchild
))
5822 i
= save_window_save (w
->hchild
, vector
, i
);
5828 DEFUN ("current-window-configuration", Fcurrent_window_configuration
,
5829 Scurrent_window_configuration
, 0, 1, 0,
5830 doc
: /* Return an object representing the current window configuration of FRAME.
5831 If FRAME is nil or omitted, use the selected frame.
5832 This describes the number of windows, their sizes and current buffers,
5833 and for each displayed buffer, where display starts, and the positions of
5834 point and mark. An exception is made for point in the current buffer:
5835 its value is -not- saved.
5836 This also records the currently selected frame, and FRAME's focus
5837 redirection (see `redirect-frame-focus'). */)
5841 register Lisp_Object tem
;
5842 register int n_windows
;
5843 register struct save_window_data
*data
;
5844 register struct Lisp_Vector
*vec
;
5849 frame
= selected_frame
;
5850 CHECK_LIVE_FRAME (frame
);
5853 n_windows
= count_windows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
5854 vec
= allocate_other_vector (VECSIZE (struct save_window_data
));
5855 data
= (struct save_window_data
*)vec
;
5857 XSETFASTINT (data
->frame_cols
, FRAME_COLS (f
));
5858 XSETFASTINT (data
->frame_lines
, FRAME_LINES (f
));
5859 XSETFASTINT (data
->frame_menu_bar_lines
, FRAME_MENU_BAR_LINES (f
));
5860 XSETFASTINT (data
->frame_tool_bar_lines
, FRAME_TOOL_BAR_LINES (f
));
5861 data
->selected_frame
= selected_frame
;
5862 data
->current_window
= FRAME_SELECTED_WINDOW (f
);
5863 XSETBUFFER (data
->current_buffer
, current_buffer
);
5864 data
->minibuf_scroll_window
= minibuf_level
> 0 ? Vminibuf_scroll_window
: Qnil
;
5865 data
->minibuf_selected_window
= minibuf_level
> 0 ? minibuf_selected_window
: Qnil
;
5866 data
->root_window
= FRAME_ROOT_WINDOW (f
);
5867 data
->focus_frame
= FRAME_FOCUS_FRAME (f
);
5868 XSETINT (data
->min_height
, window_min_height
);
5869 XSETINT (data
->min_width
, window_min_width
);
5870 tem
= Fmake_vector (make_number (n_windows
), Qnil
);
5871 data
->saved_windows
= tem
;
5872 for (i
= 0; i
< n_windows
; i
++)
5873 XVECTOR (tem
)->contents
[i
]
5874 = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE
), Qnil
);
5875 save_window_save (FRAME_ROOT_WINDOW (f
), XVECTOR (tem
), 0);
5876 XSETWINDOW_CONFIGURATION (tem
, data
);
5880 DEFUN ("save-window-excursion", Fsave_window_excursion
, Ssave_window_excursion
,
5882 doc
: /* Execute body, preserving window sizes and contents.
5883 Restore which buffer appears in which window, where display starts,
5884 and the value of point and mark for each window.
5885 Also restore the choice of selected window.
5886 Also restore which buffer is current.
5887 Does not restore the value of point in current buffer.
5888 usage: (save-window-excursion BODY ...) */)
5892 register Lisp_Object val
;
5893 register int count
= SPECPDL_INDEX ();
5895 record_unwind_protect (Fset_window_configuration
,
5896 Fcurrent_window_configuration (Qnil
));
5897 val
= Fprogn (args
);
5898 return unbind_to (count
, val
);
5902 /***********************************************************************
5904 ***********************************************************************/
5906 DEFUN ("set-window-margins", Fset_window_margins
, Sset_window_margins
,
5908 doc
: /* Set width of marginal areas of window WINDOW.
5909 If WINDOW is nil, set margins of the currently selected window.
5910 Second arg LEFT-WIDTH specifies the number of character cells to
5911 reserve for the left marginal area. Optional third arg RIGHT-WIDTH
5912 does the same for the right marginal area. A nil width parameter
5913 means no margin. */)
5914 (window
, left
, right
)
5915 Lisp_Object window
, left
, right
;
5917 struct window
*w
= decode_window (window
);
5919 /* Translate negative or zero widths to nil.
5920 Margins that are too wide have to be checked elsewhere. */
5924 CHECK_NUMBER (left
);
5925 if (XINT (left
) <= 0)
5931 CHECK_NUMBER (right
);
5932 if (XINT (right
) <= 0)
5936 if (!EQ (w
->left_margin_cols
, left
)
5937 || !EQ (w
->right_margin_cols
, right
))
5939 w
->left_margin_cols
= left
;
5940 w
->right_margin_cols
= right
;
5942 adjust_window_margins (w
);
5944 ++windows_or_buffers_changed
;
5945 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
5952 DEFUN ("window-margins", Fwindow_margins
, Swindow_margins
,
5954 doc
: /* Get width of marginal areas of window WINDOW.
5955 If WINDOW is omitted or nil, use the currently selected window.
5956 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
5957 If a marginal area does not exist, its width will be returned
5962 struct window
*w
= decode_window (window
);
5963 return Fcons (w
->left_margin_cols
, w
->right_margin_cols
);
5968 /***********************************************************************
5970 ***********************************************************************/
5972 DEFUN ("set-window-fringes", Fset_window_fringes
, Sset_window_fringes
,
5974 doc
: /* Set the fringe widths of window WINDOW.
5975 If WINDOW is nil, set the fringe widths of the currently selected
5977 Second arg LEFT-WIDTH specifies the number of pixels to reserve for
5978 the left fringe. Optional third arg RIGHT-WIDTH specifies the right
5979 fringe width. If a fringe width arg is nil, that means to use the
5980 frame's default fringe width. Default fringe widths can be set with
5981 the command `set-fringe-style'.
5982 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
5983 outside of the display margins. By default, fringes are drawn between
5984 display marginal areas and the text area. */)
5985 (window
, left
, right
, outside_margins
)
5986 Lisp_Object window
, left
, right
, outside_margins
;
5988 struct window
*w
= decode_window (window
);
5991 CHECK_NUMBER (left
);
5993 CHECK_NUMBER (right
);
5995 if (!EQ (w
->left_fringe_width
, left
)
5996 || !EQ (w
->right_fringe_width
, right
)
5997 || !EQ (w
->fringes_outside_margins
, outside_margins
))
5999 w
->left_fringe_width
= left
;
6000 w
->right_fringe_width
= right
;
6001 w
->fringes_outside_margins
= outside_margins
;
6003 adjust_window_margins (w
);
6005 clear_glyph_matrix (w
->current_matrix
);
6006 w
->window_end_valid
= Qnil
;
6008 ++windows_or_buffers_changed
;
6009 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6016 DEFUN ("window-fringes", Fwindow_fringes
, Swindow_fringes
,
6018 doc
: /* Get width of fringes of window WINDOW.
6019 If WINDOW is omitted or nil, use the currently selected window.
6020 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */)
6024 struct window
*w
= decode_window (window
);
6025 return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w
)),
6026 Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w
)),
6027 Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
) ?
6028 Qt
: Qnil
), Qnil
)));
6033 /***********************************************************************
6035 ***********************************************************************/
6037 DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars
, Sset_window_scroll_bars
,
6039 doc
: /* Set width and type of scroll bars of window WINDOW.
6040 If window is nil, set scroll bars of the currently selected window.
6041 Second parameter WIDTH specifies the pixel width for the scroll bar;
6042 this is automatically adjusted to a multiple of the frame column width.
6043 Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
6044 bar: left, right, or nil.
6045 If WIDTH is nil, use the frame's scroll-bar width.
6046 If TYPE is t, use the frame's scroll-bar type. */)
6047 (window
, width
, vertical_type
, horizontal_type
)
6048 Lisp_Object window
, width
, vertical_type
, horizontal_type
;
6050 struct window
*w
= decode_window (window
);
6053 CHECK_NUMBER (width
);
6055 if (XINT (width
) == 0)
6056 vertical_type
= Qnil
;
6058 if (!(EQ (vertical_type
, Qnil
)
6059 || EQ (vertical_type
, Qleft
)
6060 || EQ (vertical_type
, Qright
)
6061 || EQ (vertical_type
, Qt
)))
6062 error ("Invalid type of vertical scroll bar");
6064 if (!EQ (w
->scroll_bar_width
, width
)
6065 || !EQ (w
->vertical_scroll_bar_type
, vertical_type
))
6067 w
->scroll_bar_width
= width
;
6068 w
->vertical_scroll_bar_type
= vertical_type
;
6070 adjust_window_margins (w
);
6072 clear_glyph_matrix (w
->current_matrix
);
6073 w
->window_end_valid
= Qnil
;
6075 ++windows_or_buffers_changed
;
6076 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6083 DEFUN ("window-scroll-bars", Fwindow_scroll_bars
, Swindow_scroll_bars
,
6085 doc
: /* Get width and type of scroll bars of window WINDOW.
6086 If WINDOW is omitted or nil, use the currently selected window.
6087 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
6088 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
6093 struct window
*w
= decode_window (window
);
6094 return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6095 ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6096 : WINDOW_SCROLL_BAR_AREA_WIDTH (w
))),
6097 Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w
)),
6098 Fcons (w
->vertical_scroll_bar_type
,
6099 Fcons (Qnil
, Qnil
))));
6104 /***********************************************************************
6106 ***********************************************************************/
6108 DEFUN ("window-vscroll", Fwindow_vscroll
, Swindow_vscroll
, 0, 2, 0,
6109 doc
: /* Return the amount by which WINDOW is scrolled vertically.
6110 Use the selected window if WINDOW is nil or omitted.
6111 Normally, value is a multiple of the canonical character height of WINDOW;
6112 optional second arg PIXELS_P means value is measured in pixels. */)
6114 Lisp_Object window
, pixels_p
;
6121 window
= selected_window
;
6123 CHECK_WINDOW (window
);
6124 w
= XWINDOW (window
);
6125 f
= XFRAME (w
->frame
);
6127 if (FRAME_WINDOW_P (f
))
6128 result
= (NILP (pixels_p
)
6129 ? FRAME_CANON_Y_FROM_PIXEL_Y (f
, -w
->vscroll
)
6130 : make_number (-w
->vscroll
));
6132 result
= make_number (0);
6137 DEFUN ("set-window-vscroll", Fset_window_vscroll
, Sset_window_vscroll
,
6139 doc
: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
6140 WINDOW nil means use the selected window. Normally, VSCROLL is a
6141 non-negative multiple of the canonical character height of WINDOW;
6142 optional third arg PIXELS_P non-nil means that VSCROLL is in pixels. */)
6143 (window
, vscroll
, pixels_p
)
6144 Lisp_Object window
, vscroll
, pixels_p
;
6150 window
= selected_window
;
6152 CHECK_WINDOW (window
);
6153 CHECK_NUMBER_OR_FLOAT (vscroll
);
6155 w
= XWINDOW (window
);
6156 f
= XFRAME (w
->frame
);
6158 if (FRAME_WINDOW_P (f
))
6160 int old_dy
= w
->vscroll
;
6162 w
->vscroll
= - (NILP (pixels_p
)
6163 ? FRAME_LINE_HEIGHT (f
) * XFLOATINT (vscroll
)
6164 : XFLOATINT (vscroll
));
6165 w
->vscroll
= min (w
->vscroll
, 0);
6167 /* Adjust glyph matrix of the frame if the virtual display
6168 area becomes larger than before. */
6169 if (w
->vscroll
< 0 && w
->vscroll
< old_dy
)
6172 /* Prevent redisplay shortcuts. */
6173 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
6176 return Fwindow_vscroll (window
, pixels_p
);
6180 /* Call FN for all leaf windows on frame F. FN is called with the
6181 first argument being a pointer to the leaf window, and with
6182 additional argument USER_DATA. Stops when FN returns 0. */
6185 foreach_window (f
, fn
, user_data
)
6187 int (* fn
) P_ ((struct window
*, void *));
6190 foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f
)), fn
, user_data
);
6194 /* Helper function for foreach_window. Call FN for all leaf windows
6195 reachable from W. FN is called with the first argument being a
6196 pointer to the leaf window, and with additional argument USER_DATA.
6197 Stop when FN returns 0. Value is 0 if stopped by FN. */
6200 foreach_window_1 (w
, fn
, user_data
)
6202 int (* fn
) P_ ((struct window
*, void *));
6207 for (cont
= 1; w
&& cont
;)
6209 if (!NILP (w
->hchild
))
6210 cont
= foreach_window_1 (XWINDOW (w
->hchild
), fn
, user_data
);
6211 else if (!NILP (w
->vchild
))
6212 cont
= foreach_window_1 (XWINDOW (w
->vchild
), fn
, user_data
);
6214 cont
= fn (w
, user_data
);
6216 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6223 /* Freeze or unfreeze the window start of W unless it is a
6224 mini-window or the selected window. FREEZE_P non-null means freeze
6225 the window start. */
6228 freeze_window_start (w
, freeze_p
)
6232 if (w
== XWINDOW (selected_window
)
6233 || MINI_WINDOW_P (w
)
6234 || (MINI_WINDOW_P (XWINDOW (selected_window
))
6235 && ! NILP (Vminibuf_scroll_window
)
6236 && w
== XWINDOW (Vminibuf_scroll_window
)))
6239 w
->frozen_window_start_p
= freeze_p
!= NULL
;
6244 /* Freeze or unfreeze the window starts of all leaf windows on frame
6245 F, except the selected window and a mini-window. FREEZE_P non-zero
6246 means freeze the window start. */
6249 freeze_window_starts (f
, freeze_p
)
6253 foreach_window (f
, freeze_window_start
, (void *) (freeze_p
? f
: 0));
6257 /***********************************************************************
6259 ***********************************************************************/
6261 /* Return 1 if window configurations C1 and C2
6262 describe the same state of affairs. This is used by Fequal. */
6265 compare_window_configurations (c1
, c2
, ignore_positions
)
6267 int ignore_positions
;
6269 register struct save_window_data
*d1
, *d2
;
6270 struct Lisp_Vector
*sw1
, *sw2
;
6273 if (!WINDOW_CONFIGURATIONP (c1
))
6274 wrong_type_argument (Qwindow_configuration_p
, c1
);
6275 if (!WINDOW_CONFIGURATIONP (c2
))
6276 wrong_type_argument (Qwindow_configuration_p
, c2
);
6278 d1
= (struct save_window_data
*) XVECTOR (c1
);
6279 d2
= (struct save_window_data
*) XVECTOR (c2
);
6280 sw1
= XVECTOR (d1
->saved_windows
);
6281 sw2
= XVECTOR (d2
->saved_windows
);
6283 if (! EQ (d1
->frame_cols
, d2
->frame_cols
))
6285 if (! EQ (d1
->frame_lines
, d2
->frame_lines
))
6287 if (! EQ (d1
->frame_menu_bar_lines
, d2
->frame_menu_bar_lines
))
6289 if (! EQ (d1
->selected_frame
, d2
->selected_frame
))
6291 /* Don't compare the current_window field directly.
6292 Instead see w1_is_current and w2_is_current, below. */
6293 if (! EQ (d1
->current_buffer
, d2
->current_buffer
))
6295 if (! ignore_positions
)
6297 if (! EQ (d1
->minibuf_scroll_window
, d2
->minibuf_scroll_window
))
6299 if (! EQ (d1
->minibuf_selected_window
, d2
->minibuf_selected_window
))
6302 /* Don't compare the root_window field.
6303 We don't require the two configurations
6304 to use the same window object,
6305 and the two root windows must be equivalent
6306 if everything else compares equal. */
6307 if (! EQ (d1
->focus_frame
, d2
->focus_frame
))
6309 if (! EQ (d1
->min_width
, d2
->min_width
))
6311 if (! EQ (d1
->min_height
, d2
->min_height
))
6314 /* Verify that the two confis have the same number of windows. */
6315 if (sw1
->size
!= sw2
->size
)
6318 for (i
= 0; i
< sw1
->size
; i
++)
6320 struct saved_window
*p1
, *p2
;
6321 int w1_is_current
, w2_is_current
;
6323 p1
= SAVED_WINDOW_N (sw1
, i
);
6324 p2
= SAVED_WINDOW_N (sw2
, i
);
6326 /* Verify that the current windows in the two
6327 configurations correspond to each other. */
6328 w1_is_current
= EQ (d1
->current_window
, p1
->window
);
6329 w2_is_current
= EQ (d2
->current_window
, p2
->window
);
6331 if (w1_is_current
!= w2_is_current
)
6334 /* Verify that the corresponding windows do match. */
6335 if (! EQ (p1
->buffer
, p2
->buffer
))
6337 if (! EQ (p1
->left_col
, p2
->left_col
))
6339 if (! EQ (p1
->top_line
, p2
->top_line
))
6341 if (! EQ (p1
->total_cols
, p2
->total_cols
))
6343 if (! EQ (p1
->total_lines
, p2
->total_lines
))
6345 if (! EQ (p1
->display_table
, p2
->display_table
))
6347 if (! EQ (p1
->parent
, p2
->parent
))
6349 if (! EQ (p1
->prev
, p2
->prev
))
6351 if (! ignore_positions
)
6353 if (! EQ (p1
->hscroll
, p2
->hscroll
))
6355 if (!EQ (p1
->min_hscroll
, p2
->min_hscroll
))
6357 if (! EQ (p1
->start_at_line_beg
, p2
->start_at_line_beg
))
6359 if (NILP (Fequal (p1
->start
, p2
->start
)))
6361 if (NILP (Fequal (p1
->pointm
, p2
->pointm
)))
6363 if (NILP (Fequal (p1
->mark
, p2
->mark
)))
6366 if (! EQ (p1
->left_margin_cols
, p2
->left_margin_cols
))
6368 if (! EQ (p1
->right_margin_cols
, p2
->right_margin_cols
))
6370 if (! EQ (p1
->left_fringe_width
, p2
->left_fringe_width
))
6372 if (! EQ (p1
->right_fringe_width
, p2
->right_fringe_width
))
6374 if (! EQ (p1
->fringes_outside_margins
, p2
->fringes_outside_margins
))
6376 if (! EQ (p1
->scroll_bar_width
, p2
->scroll_bar_width
))
6378 if (! EQ (p1
->vertical_scroll_bar_type
, p2
->vertical_scroll_bar_type
))
6385 DEFUN ("compare-window-configurations", Fcompare_window_configurations
,
6386 Scompare_window_configurations
, 2, 2, 0,
6387 doc
: /* Compare two window configurations as regards the structure of windows.
6388 This function ignores details such as the values of point and mark
6389 and scrolling positions. */)
6393 if (compare_window_configurations (x
, y
, 1))
6401 struct frame
*f
= make_initial_frame ();
6402 XSETFRAME (selected_frame
, f
);
6403 Vterminal_frame
= selected_frame
;
6404 minibuf_window
= f
->minibuffer_window
;
6405 selected_window
= f
->selected_window
;
6406 last_nonminibuf_frame
= f
;
6408 window_initialized
= 1;
6414 Vwindow_list
= Qnil
;
6420 Qwindow_size_fixed
= intern ("window-size-fixed");
6421 staticpro (&Qwindow_size_fixed
);
6423 staticpro (&Qwindow_configuration_change_hook
);
6424 Qwindow_configuration_change_hook
6425 = intern ("window-configuration-change-hook");
6427 Qwindowp
= intern ("windowp");
6428 staticpro (&Qwindowp
);
6430 Qwindow_configuration_p
= intern ("window-configuration-p");
6431 staticpro (&Qwindow_configuration_p
);
6433 Qwindow_live_p
= intern ("window-live-p");
6434 staticpro (&Qwindow_live_p
);
6436 Qtemp_buffer_show_hook
= intern ("temp-buffer-show-hook");
6437 staticpro (&Qtemp_buffer_show_hook
);
6439 staticpro (&Vwindow_list
);
6441 minibuf_selected_window
= Qnil
;
6442 staticpro (&minibuf_selected_window
);
6444 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function
,
6445 doc
: /* Non-nil means call as function to display a help buffer.
6446 The function is called with one argument, the buffer to be displayed.
6447 Used by `with-output-to-temp-buffer'.
6448 If this function is used, then it must do the entire job of showing
6449 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
6450 Vtemp_buffer_show_function
= Qnil
;
6452 DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function
,
6453 doc
: /* If non-nil, function to call to handle `display-buffer'.
6454 It will receive two args, the buffer and a flag which if non-nil means
6455 that the currently selected window is not acceptable.
6456 Commands such as `switch-to-buffer-other-window' and `find-file-other-window'
6457 work using this function. */);
6458 Vdisplay_buffer_function
= Qnil
;
6460 DEFVAR_LISP ("even-window-heights", &Veven_window_heights
,
6461 doc
: /* *If non-nil, `display-buffer' should even the window heights.
6462 If nil, `display-buffer' will leave the window configuration alone. */);
6463 Veven_window_heights
= Qt
;
6465 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window
,
6466 doc
: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
6467 Vminibuf_scroll_window
= Qnil
;
6469 DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows
,
6470 doc
: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
6471 If the minibuffer is active, the `minibuffer-scroll-window' mode line
6472 is displayed in the `mode-line' face. */);
6473 mode_line_in_non_selected_windows
= 1;
6475 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer
,
6476 doc
: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */);
6477 Vother_window_scroll_buffer
= Qnil
;
6479 DEFVAR_BOOL ("pop-up-frames", &pop_up_frames
,
6480 doc
: /* *Non-nil means `display-buffer' should make a separate frame. */);
6483 DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames
,
6484 doc
: /* *Non-nil means `display-buffer' should reuse frames.
6485 If the buffer in question is already displayed in a frame, raise that frame. */);
6486 display_buffer_reuse_frames
= 0;
6488 DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function
,
6489 doc
: /* Function to call to handle automatic new frame creation.
6490 It is called with no arguments and should return a newly created frame.
6492 A typical value might be `(lambda () (new-frame pop-up-frame-alist))'
6493 where `pop-up-frame-alist' would hold the default frame parameters. */);
6494 Vpop_up_frame_function
= Qnil
;
6496 DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names
,
6497 doc
: /* *List of buffer names that should have their own special frames.
6498 Displaying a buffer whose name is in this list makes a special frame for it
6499 using `special-display-function'. See also `special-display-regexps'.
6501 An element of the list can be a list instead of just a string.
6502 There are two ways to use a list as an element:
6503 (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)
6504 In the first case, FRAME-PARAMETERS are used to create the frame.
6505 In the latter case, FUNCTION is called with BUFFER as the first argument,
6506 followed by OTHER-ARGS--it can display BUFFER in any way it likes.
6507 All this is done by the function found in `special-display-function'.
6509 If the specified frame parameters include (same-buffer . t), the
6510 buffer is displayed in the currently selected window. Otherwise, if
6511 they include (same-frame . t), the buffer is displayed in a new window
6512 in the currently selected frame.
6514 If this variable appears \"not to work\", because you add a name to it
6515 but that buffer still appears in the selected window, look at the
6516 values of `same-window-buffer-names' and `same-window-regexps'.
6517 Those variables take precedence over this one. */);
6518 Vspecial_display_buffer_names
= Qnil
;
6520 DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps
,
6521 doc
: /* *List of regexps saying which buffers should have their own special frames.
6522 If a buffer name matches one of these regexps, it gets its own frame.
6523 Displaying a buffer whose name is in this list makes a special frame for it
6524 using `special-display-function'.
6526 An element of the list can be a list instead of just a string.
6527 There are two ways to use a list as an element:
6528 (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)
6529 In the first case, FRAME-PARAMETERS are used to create the frame.
6530 In the latter case, FUNCTION is called with the buffer as first argument,
6531 followed by OTHER-ARGS--it can display the buffer in any way it likes.
6532 All this is done by the function found in `special-display-function'.
6534 If the specified frame parameters include (same-buffer . t), the
6535 buffer is displayed in the currently selected window. Otherwise, if
6536 they include (same-frame . t), the buffer is displayed in a new window
6537 in the currently selected frame.
6539 If this variable appears \"not to work\", because you add a regexp to it
6540 but the matching buffers still appear in the selected window, look at the
6541 values of `same-window-buffer-names' and `same-window-regexps'.
6542 Those variables take precedence over this one. */);
6543 Vspecial_display_regexps
= Qnil
;
6545 DEFVAR_LISP ("special-display-function", &Vspecial_display_function
,
6546 doc
: /* Function to call to make a new frame for a special buffer.
6547 It is called with two arguments, the buffer and optional buffer specific
6548 data, and should return a window displaying that buffer.
6549 The default value normally makes a separate frame for the buffer,
6550 using `special-display-frame-alist' to specify the frame parameters.
6551 But if the buffer specific data includes (same-buffer . t) then the
6552 buffer is displayed in the current selected window.
6553 Otherwise if it includes (same-frame . t) then the buffer is displayed in
6554 a new window in the currently selected frame.
6556 A buffer is special if it is listed in `special-display-buffer-names'
6557 or matches a regexp in `special-display-regexps'. */);
6558 Vspecial_display_function
= Qnil
;
6560 DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names
,
6561 doc
: /* *List of buffer names that should appear in the selected window.
6562 Displaying one of these buffers using `display-buffer' or `pop-to-buffer'
6563 switches to it in the selected window, rather than making it appear
6564 in some other window.
6566 An element of the list can be a cons cell instead of just a string.
6567 Then the car must be a string, which specifies the buffer name.
6568 This is for compatibility with `special-display-buffer-names';
6569 the cdr of the cons cell is ignored.
6571 See also `same-window-regexps'. */);
6572 Vsame_window_buffer_names
= Qnil
;
6574 DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps
,
6575 doc
: /* *List of regexps saying which buffers should appear in the selected window.
6576 If a buffer name matches one of these regexps, then displaying it
6577 using `display-buffer' or `pop-to-buffer' switches to it
6578 in the selected window, rather than making it appear in some other window.
6580 An element of the list can be a cons cell instead of just a string.
6581 Then the car must be a string, which specifies the buffer name.
6582 This is for compatibility with `special-display-buffer-names';
6583 the cdr of the cons cell is ignored.
6585 See also `same-window-buffer-names'. */);
6586 Vsame_window_regexps
= Qnil
;
6588 DEFVAR_BOOL ("pop-up-windows", &pop_up_windows
,
6589 doc
: /* *Non-nil means display-buffer should make new windows. */);
6592 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines
,
6593 doc
: /* *Number of lines of continuity when scrolling by screenfuls. */);
6594 next_screen_context_lines
= 2;
6596 DEFVAR_INT ("split-height-threshold", &split_height_threshold
,
6597 doc
: /* *display-buffer would prefer to split the largest window if this large.
6598 If there is only one window, it is split regardless of this value. */);
6599 split_height_threshold
= 500;
6601 DEFVAR_INT ("window-min-height", &window_min_height
,
6602 doc
: /* *Delete any window less than this tall (including its mode line). */);
6603 window_min_height
= 4;
6605 DEFVAR_INT ("window-min-width", &window_min_width
,
6606 doc
: /* *Delete any window less than this wide. */);
6607 window_min_width
= 10;
6609 DEFVAR_LISP ("scroll-preserve-screen-position",
6610 &Vscroll_preserve_screen_position
,
6611 doc
: /* *Non-nil means scroll commands move point to keep its screen line unchanged. */);
6612 Vscroll_preserve_screen_position
= Qnil
;
6614 DEFVAR_LISP ("window-configuration-change-hook",
6615 &Vwindow_configuration_change_hook
,
6616 doc
: /* Functions to call when window configuration changes.
6617 The selected frame is the one whose configuration has changed. */);
6618 Vwindow_configuration_change_hook
= Qnil
;
6620 DEFVAR_BOOL ("window-size-fixed", &window_size_fixed
,
6621 doc
: /* Non-nil in a buffer means windows displaying the buffer are fixed-size.
6622 Emacs won't change the size of any window displaying that buffer,
6623 unless you explicitly change the size, or Emacs has no other choice.
6624 This variable automatically becomes buffer-local when set. */);
6625 Fmake_variable_buffer_local (Qwindow_size_fixed
);
6626 window_size_fixed
= 0;
6628 defsubr (&Sselected_window
);
6629 defsubr (&Sminibuffer_window
);
6630 defsubr (&Swindow_minibuffer_p
);
6631 defsubr (&Swindowp
);
6632 defsubr (&Swindow_live_p
);
6633 defsubr (&Spos_visible_in_window_p
);
6634 defsubr (&Swindow_buffer
);
6635 defsubr (&Swindow_height
);
6636 defsubr (&Swindow_width
);
6637 defsubr (&Swindow_hscroll
);
6638 defsubr (&Sset_window_hscroll
);
6639 defsubr (&Swindow_redisplay_end_trigger
);
6640 defsubr (&Sset_window_redisplay_end_trigger
);
6641 defsubr (&Swindow_edges
);
6642 defsubr (&Swindow_pixel_edges
);
6643 defsubr (&Swindow_inside_edges
);
6644 defsubr (&Swindow_inside_pixel_edges
);
6645 defsubr (&Scoordinates_in_window_p
);
6646 defsubr (&Swindow_at
);
6647 defsubr (&Swindow_point
);
6648 defsubr (&Swindow_start
);
6649 defsubr (&Swindow_end
);
6650 defsubr (&Sset_window_point
);
6651 defsubr (&Sset_window_start
);
6652 defsubr (&Swindow_dedicated_p
);
6653 defsubr (&Sset_window_dedicated_p
);
6654 defsubr (&Swindow_display_table
);
6655 defsubr (&Sset_window_display_table
);
6656 defsubr (&Snext_window
);
6657 defsubr (&Sprevious_window
);
6658 defsubr (&Sother_window
);
6659 defsubr (&Sget_lru_window
);
6660 defsubr (&Sget_largest_window
);
6661 defsubr (&Sget_buffer_window
);
6662 defsubr (&Sdelete_other_windows
);
6663 defsubr (&Sdelete_windows_on
);
6664 defsubr (&Sreplace_buffer_in_windows
);
6665 defsubr (&Sdelete_window
);
6666 defsubr (&Sset_window_buffer
);
6667 defsubr (&Sselect_window
);
6668 defsubr (&Sspecial_display_p
);
6669 defsubr (&Ssame_window_p
);
6670 defsubr (&Sdisplay_buffer
);
6671 defsubr (&Sforce_window_update
);
6672 defsubr (&Ssplit_window
);
6673 defsubr (&Senlarge_window
);
6674 defsubr (&Sshrink_window
);
6675 defsubr (&Sscroll_up
);
6676 defsubr (&Sscroll_down
);
6677 defsubr (&Sscroll_left
);
6678 defsubr (&Sscroll_right
);
6679 defsubr (&Sother_window_for_scrolling
);
6680 defsubr (&Sscroll_other_window
);
6681 defsubr (&Sminibuffer_selected_window
);
6682 defsubr (&Srecenter
);
6683 defsubr (&Swindow_text_height
);
6684 defsubr (&Smove_to_window_line
);
6685 defsubr (&Swindow_configuration_p
);
6686 defsubr (&Swindow_configuration_frame
);
6687 defsubr (&Sset_window_configuration
);
6688 defsubr (&Scurrent_window_configuration
);
6689 defsubr (&Ssave_window_excursion
);
6690 defsubr (&Sset_window_margins
);
6691 defsubr (&Swindow_margins
);
6692 defsubr (&Sset_window_fringes
);
6693 defsubr (&Swindow_fringes
);
6694 defsubr (&Sset_window_scroll_bars
);
6695 defsubr (&Swindow_scroll_bars
);
6696 defsubr (&Swindow_vscroll
);
6697 defsubr (&Sset_window_vscroll
);
6698 defsubr (&Scompare_window_configurations
);
6699 defsubr (&Swindow_list
);
6705 initial_define_key (control_x_map
, '1', "delete-other-windows");
6706 initial_define_key (control_x_map
, '2', "split-window");
6707 initial_define_key (control_x_map
, '0', "delete-window");
6708 initial_define_key (control_x_map
, 'o', "other-window");
6709 initial_define_key (control_x_map
, '^', "enlarge-window");
6710 initial_define_key (control_x_map
, '<', "scroll-left");
6711 initial_define_key (control_x_map
, '>', "scroll-right");
6713 initial_define_key (global_map
, Ctl ('V'), "scroll-up");
6714 initial_define_key (meta_map
, Ctl ('V'), "scroll-other-window");
6715 initial_define_key (meta_map
, 'v', "scroll-down");
6717 initial_define_key (global_map
, Ctl('L'), "recenter");
6718 initial_define_key (meta_map
, 'r', "move-to-window-line");
6721 /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f
6722 (do not change this comment) */