1 /* Window creation, deletion and examination for GNU Emacs.
2 Does not include redisplay.
3 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
4 2001, 2002, 2003, 2004, 2005, 2006 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., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
34 #include "dispextern.h"
35 #include "blockinput.h"
36 #include "intervals.h"
40 #endif /* HAVE_X_WINDOWS */
52 Lisp_Object Qwindowp
, Qwindow_live_p
, Qwindow_configuration_p
;
53 Lisp_Object Qscroll_up
, Qscroll_down
;
54 Lisp_Object Qwindow_size_fixed
;
55 extern Lisp_Object Qleft_margin
, Qright_margin
;
57 static int displayed_window_lines
P_ ((struct window
*));
58 static struct window
*decode_window
P_ ((Lisp_Object
));
59 static int count_windows
P_ ((struct window
*));
60 static int get_leaf_windows
P_ ((struct window
*, struct window
**, int));
61 static void window_scroll
P_ ((Lisp_Object
, int, int, int));
62 static void window_scroll_pixel_based
P_ ((Lisp_Object
, int, int, int));
63 static void window_scroll_line_based
P_ ((Lisp_Object
, int, int, int));
64 static int window_min_size_1
P_ ((struct window
*, int));
65 static int window_min_size
P_ ((struct window
*, int, int, int *));
66 static void size_window
P_ ((Lisp_Object
, int, int, int, int, int));
67 static int freeze_window_start
P_ ((struct window
*, void *));
68 static int window_fixed_size_p
P_ ((struct window
*, int, int));
69 static void enlarge_window
P_ ((Lisp_Object
, int, int));
70 static Lisp_Object window_list
P_ ((void));
71 static int add_window_to_list
P_ ((struct window
*, void *));
72 static int candidate_window_p
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
74 static Lisp_Object next_window
P_ ((Lisp_Object
, Lisp_Object
,
76 static void decode_next_window_args
P_ ((Lisp_Object
*, Lisp_Object
*,
78 static int foreach_window_1
P_ ((struct window
*,
79 int (* fn
) (struct window
*, void *),
81 static Lisp_Object window_list_1
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
83 /* This is the window in which the terminal's cursor should
84 be left when nothing is being done with it. This must
85 always be a leaf window, and its buffer is selected by
86 the top level editing loop at the end of each command.
88 This value is always the same as
89 FRAME_SELECTED_WINDOW (selected_frame). */
91 Lisp_Object selected_window
;
93 /* A list of all windows for use by next_window and Fwindow_list.
94 Functions creating or deleting windows should invalidate this cache
95 by setting it to nil. */
97 Lisp_Object Vwindow_list
;
99 /* The mini-buffer window of the selected frame.
100 Note that you cannot test for mini-bufferness of an arbitrary window
101 by comparing against this; but you can test for mini-bufferness of
102 the selected window. */
104 Lisp_Object minibuf_window
;
106 /* Non-nil means it is the window whose mode line should be
107 shown as the selected window when the minibuffer is selected. */
109 Lisp_Object minibuf_selected_window
;
111 /* Non-nil means it is the window for C-M-v to scroll
112 when the mini-buffer is selected. */
114 Lisp_Object Vminibuf_scroll_window
;
116 /* Non-nil means this is the buffer whose window C-M-v should scroll. */
118 Lisp_Object Vother_window_scroll_buffer
;
120 /* Non-nil means it's function to call to display temp buffers. */
122 Lisp_Object Vtemp_buffer_show_function
;
124 /* Non-zero means line and page scrolling on tall lines (with images)
125 does partial scrolling by modifying window-vscroll. */
127 int auto_window_vscroll_p
;
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 /* Non-nil means scroll commands try to put point
210 at the same screen height as previously. */
212 Lisp_Object Vscroll_preserve_screen_position
;
214 /* Incremented by 1 whenever a window is deleted. */
216 int window_deletion_count
;
218 /* Used by the function window_scroll_pixel_based */
220 static int window_scroll_pixel_based_preserve_y
;
222 #if 0 /* This isn't used anywhere. */
223 /* Nonzero means we can split a frame even if it is "unsplittable". */
224 static int inhibit_frame_unsplittable
;
227 extern EMACS_INT scroll_margin
;
229 extern Lisp_Object Qwindow_scroll_functions
, Vwindow_scroll_functions
;
231 DEFUN ("windowp", Fwindowp
, Swindowp
, 1, 1, 0,
232 doc
: /* Returns t if OBJECT is a window. */)
236 return WINDOWP (object
) ? Qt
: Qnil
;
239 DEFUN ("window-live-p", Fwindow_live_p
, Swindow_live_p
, 1, 1, 0,
240 doc
: /* Returns t if OBJECT is a window which is currently visible. */)
244 return WINDOW_LIVE_P (object
) ? Qt
: Qnil
;
251 register struct window
*p
;
253 p
= allocate_window ();
255 XSETFASTINT (p
->sequence_number
, sequence_number
);
256 XSETFASTINT (p
->left_col
, 0);
257 XSETFASTINT (p
->top_line
, 0);
258 XSETFASTINT (p
->total_lines
, 0);
259 XSETFASTINT (p
->total_cols
, 0);
260 XSETFASTINT (p
->hscroll
, 0);
261 XSETFASTINT (p
->min_hscroll
, 0);
262 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
263 p
->start
= Fmake_marker ();
264 p
->pointm
= Fmake_marker ();
265 XSETFASTINT (p
->use_time
, 0);
267 p
->display_table
= Qnil
;
269 p
->pseudo_window_p
= 0;
270 bzero (&p
->cursor
, sizeof (p
->cursor
));
271 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
272 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
273 p
->desired_matrix
= p
->current_matrix
= 0;
274 p
->nrows_scale_factor
= p
->ncols_scale_factor
= 1;
275 p
->phys_cursor_type
= -1;
276 p
->phys_cursor_width
= -1;
277 p
->must_be_updated_p
= 0;
278 XSETFASTINT (p
->window_end_vpos
, 0);
279 XSETFASTINT (p
->window_end_pos
, 0);
280 p
->window_end_valid
= Qnil
;
283 XSETFASTINT (p
->last_point
, 0);
284 p
->frozen_window_start_p
= 0;
285 p
->last_cursor_off_p
= p
->cursor_off_p
= 0;
286 p
->left_margin_cols
= Qnil
;
287 p
->right_margin_cols
= Qnil
;
288 p
->left_fringe_width
= Qnil
;
289 p
->right_fringe_width
= Qnil
;
290 p
->fringes_outside_margins
= Qnil
;
291 p
->scroll_bar_width
= Qnil
;
292 p
->vertical_scroll_bar_type
= Qt
;
298 DEFUN ("selected-window", Fselected_window
, Sselected_window
, 0, 0, 0,
299 doc
: /* Return the window that the cursor now appears in and commands apply to. */)
302 return selected_window
;
305 DEFUN ("minibuffer-window", Fminibuffer_window
, Sminibuffer_window
, 0, 1, 0,
306 doc
: /* Return the window used now for minibuffers.
307 If the optional argument FRAME is specified, return the minibuffer window
308 used by that frame. */)
313 frame
= selected_frame
;
314 CHECK_LIVE_FRAME (frame
);
315 return FRAME_MINIBUF_WINDOW (XFRAME (frame
));
318 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p
, Swindow_minibuffer_p
, 0, 1, 0,
319 doc
: /* Returns non-nil if WINDOW is a minibuffer window.
320 WINDOW defaults to the selected window. */)
324 struct window
*w
= decode_window (window
);
325 return MINI_WINDOW_P (w
) ? Qt
: Qnil
;
329 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p
,
330 Spos_visible_in_window_p
, 0, 3, 0,
331 doc
: /* Return non-nil if position POS is currently on the frame in WINDOW.
332 Return nil if that position is scrolled vertically out of view.
333 If a character is only partially visible, nil is returned, unless the
334 optional argument PARTIALLY is non-nil.
335 If POS is only out of view because of horizontal scrolling, return non-nil.
336 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
338 If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,
339 return value is a list (X Y PARTIAL) where X and Y are the pixel coordinates
340 relative to the top left corner of the window. PARTIAL is nil if the character
341 after POS is fully visible; otherwise it is a cons (RTOP . RBOT) where RTOP
342 and RBOT are the number of pixels invisible at the top and bottom of the row. */)
343 (pos
, window
, partially
)
344 Lisp_Object pos
, window
, partially
;
346 register struct window
*w
;
348 register struct buffer
*buf
;
350 Lisp_Object in_window
= Qnil
;
351 int rtop
, rbot
, fully_p
= 1;
354 w
= decode_window (window
);
355 buf
= XBUFFER (w
->buffer
);
356 SET_TEXT_POS_FROM_MARKER (top
, w
->start
);
360 CHECK_NUMBER_COERCE_MARKER (pos
);
363 else if (w
== XWINDOW (selected_window
))
366 posint
= XMARKER (w
->pointm
)->charpos
;
368 /* If position is above window start or outside buffer boundaries,
369 or if window start is out of range, position is not visible. */
370 if (posint
>= CHARPOS (top
)
371 && posint
<= BUF_ZV (buf
)
372 && CHARPOS (top
) >= BUF_BEGV (buf
)
373 && CHARPOS (top
) <= BUF_ZV (buf
)
374 && pos_visible_p (w
, posint
, &x
, &y
, &rtop
, &rbot
, NILP (partially
))
375 && (fully_p
= !rtop
&& !rbot
, (!NILP (partially
) || fully_p
)))
378 if (!NILP (in_window
) && !NILP (partially
))
379 in_window
= Fcons (make_number (x
),
380 Fcons (make_number (y
),
381 Fcons ((fully_p
? Qnil
382 : Fcons (make_number (rtop
),
383 make_number (rbot
))),
389 static struct window
*
390 decode_window (window
)
391 register Lisp_Object window
;
394 return XWINDOW (selected_window
);
396 CHECK_LIVE_WINDOW (window
);
397 return XWINDOW (window
);
400 static struct window
*
401 decode_any_window (window
)
402 register Lisp_Object window
;
405 return XWINDOW (selected_window
);
407 CHECK_WINDOW (window
);
408 return XWINDOW (window
);
411 DEFUN ("window-buffer", Fwindow_buffer
, Swindow_buffer
, 0, 1, 0,
412 doc
: /* Return the buffer that WINDOW is displaying.
413 WINDOW defaults to the selected window. */)
417 return decode_window (window
)->buffer
;
420 DEFUN ("window-height", Fwindow_height
, Swindow_height
, 0, 1, 0,
421 doc
: /* Return the number of lines in WINDOW (including its mode line). */)
425 return decode_any_window (window
)->total_lines
;
428 DEFUN ("window-width", Fwindow_width
, Swindow_width
, 0, 1, 0,
429 doc
: /* Return the number of display columns in WINDOW.
430 This is the width that is usable columns available for text in WINDOW.
431 If you want to find out how many columns WINDOW takes up,
432 use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */)
436 return make_number (window_box_text_cols (decode_any_window (window
)));
439 DEFUN ("window-hscroll", Fwindow_hscroll
, Swindow_hscroll
, 0, 1, 0,
440 doc
: /* Return the number of columns by which WINDOW is scrolled from left margin. */)
444 return decode_window (window
)->hscroll
;
447 DEFUN ("set-window-hscroll", Fset_window_hscroll
, Sset_window_hscroll
, 2, 2, 0,
448 doc
: /* Set number of columns WINDOW is scrolled from left margin to NCOL.
449 Return NCOL. NCOL should be zero or positive.
451 Note that if `automatic-hscrolling' is non-nil, you cannot scroll the
452 window so that the location of point becomes invisible. */)
454 Lisp_Object window
, ncol
;
456 struct window
*w
= decode_window (window
);
460 hscroll
= max (0, XINT (ncol
));
462 /* Prevent redisplay shortcuts when changing the hscroll. */
463 if (XINT (w
->hscroll
) != hscroll
)
464 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
466 w
->hscroll
= make_number (hscroll
);
470 DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger
,
471 Swindow_redisplay_end_trigger
, 0, 1, 0,
472 doc
: /* Return WINDOW's redisplay end trigger value.
473 See `set-window-redisplay-end-trigger' for more information. */)
477 return decode_window (window
)->redisplay_end_trigger
;
480 DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger
,
481 Sset_window_redisplay_end_trigger
, 2, 2, 0,
482 doc
: /* Set WINDOW's redisplay end trigger value to VALUE.
483 VALUE should be a buffer position (typically a marker) or nil.
484 If it is a buffer position, then if redisplay in WINDOW reaches a position
485 beyond VALUE, the functions in `redisplay-end-trigger-functions' are called
486 with two arguments: WINDOW, and the end trigger value.
487 Afterwards the end-trigger value is reset to nil. */)
489 register Lisp_Object window
, value
;
491 register struct window
*w
;
493 w
= decode_window (window
);
494 w
->redisplay_end_trigger
= value
;
498 DEFUN ("window-edges", Fwindow_edges
, Swindow_edges
, 0, 1, 0,
499 doc
: /* Return a list of the edge coordinates of WINDOW.
500 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
501 RIGHT is one more than the rightmost column occupied by WINDOW,
502 and BOTTOM is one more than the bottommost row occupied by WINDOW.
503 The edges include the space used by the window's scroll bar,
504 display margins, fringes, header line, and mode line, if it has them.
505 To get the edges of the actual text area, use `window-inside-edges'. */)
509 register struct window
*w
= decode_any_window (window
);
511 return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w
)),
512 Fcons (make_number (WINDOW_TOP_EDGE_LINE (w
)),
513 Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w
)),
514 Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w
)),
518 DEFUN ("window-pixel-edges", Fwindow_pixel_edges
, Swindow_pixel_edges
, 0, 1, 0,
519 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
520 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
521 RIGHT is one more than the rightmost x position occupied by WINDOW,
522 and BOTTOM is one more than the bottommost y position occupied by WINDOW.
523 The pixel edges include the space used by the window's scroll bar,
524 display margins, fringes, header line, and mode line, if it has them.
525 To get the edges of the actual text area, use `window-inside-pixel-edges'. */)
529 register struct window
*w
= decode_any_window (window
);
531 return Fcons (make_number (WINDOW_LEFT_EDGE_X (w
)),
532 Fcons (make_number (WINDOW_TOP_EDGE_Y (w
)),
533 Fcons (make_number (WINDOW_RIGHT_EDGE_X (w
)),
534 Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w
)),
538 DEFUN ("window-inside-edges", Fwindow_inside_edges
, Swindow_inside_edges
, 0, 1, 0,
539 doc
: /* Return a list of the edge coordinates of WINDOW.
540 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
541 RIGHT is one more than the rightmost column used by text in WINDOW,
542 and BOTTOM is one more than the bottommost row used by text in WINDOW.
543 The inside edges do not include the space used by the window's scroll bar,
544 display margins, fringes, header line, and/or mode line. */)
548 register struct window
*w
= decode_any_window (window
);
550 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w
)
551 + WINDOW_LEFT_MARGIN_COLS (w
)
552 + WINDOW_LEFT_FRINGE_COLS (w
)),
553 make_number (WINDOW_TOP_EDGE_LINE (w
)
554 + WINDOW_HEADER_LINE_LINES (w
)),
555 make_number (WINDOW_BOX_RIGHT_EDGE_COL (w
)
556 - WINDOW_RIGHT_MARGIN_COLS (w
)
557 - WINDOW_RIGHT_FRINGE_COLS (w
)),
558 make_number (WINDOW_BOTTOM_EDGE_LINE (w
)
559 - WINDOW_MODE_LINE_LINES (w
)));
562 DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges
, Swindow_inside_pixel_edges
, 0, 1, 0,
563 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
564 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
565 RIGHT is one more than the rightmost x position used by text in WINDOW,
566 and BOTTOM is one more than the bottommost y position used by text in WINDOW.
567 The inside edges do not include the space used by the window's scroll bar,
568 display margins, fringes, header line, and/or mode line. */)
572 register struct window
*w
= decode_any_window (window
);
574 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w
)
575 + WINDOW_LEFT_MARGIN_WIDTH (w
)
576 + WINDOW_LEFT_FRINGE_WIDTH (w
)),
577 make_number (WINDOW_TOP_EDGE_Y (w
)
578 + WINDOW_HEADER_LINE_HEIGHT (w
)),
579 make_number (WINDOW_BOX_RIGHT_EDGE_X (w
)
580 - WINDOW_RIGHT_MARGIN_WIDTH (w
)
581 - WINDOW_RIGHT_FRINGE_WIDTH (w
)),
582 make_number (WINDOW_BOTTOM_EDGE_Y (w
)
583 - WINDOW_MODE_LINE_HEIGHT (w
)));
586 /* Test if the character at column *X, row *Y is within window W.
587 If it is not, return ON_NOTHING;
588 if it is in the window's text area,
589 set *x and *y to its location relative to the upper left corner
592 if it is on the window's modeline, return ON_MODE_LINE;
593 if it is on the border between the window and its right sibling,
594 return ON_VERTICAL_BORDER.
595 if it is on a scroll bar,
596 return ON_SCROLL_BAR.
597 if it is on the window's top line, return ON_HEADER_LINE;
598 if it is in left or right fringe of the window,
599 return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y
600 to window-relative coordinates;
601 if it is in the marginal area to the left/right of the window,
602 return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y
603 to window-relative coordinates.
605 X and Y are frame relative pixel coordinates. */
607 static enum window_part
608 coordinates_in_window (w
, x
, y
)
609 register struct window
*w
;
612 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
613 int left_x
, right_x
, top_y
, bottom_y
;
614 enum window_part part
;
615 int ux
= FRAME_COLUMN_WIDTH (f
);
616 int x0
= WINDOW_LEFT_EDGE_X (w
);
617 int x1
= WINDOW_RIGHT_EDGE_X (w
);
618 /* The width of the area where the vertical line can be dragged.
619 (Between mode lines for instance. */
620 int grabbable_width
= ux
;
621 int lmargin_width
, rmargin_width
, text_left
, text_right
;
623 /* In what's below, we subtract 1 when computing right_x because we
624 want the rightmost pixel, which is given by left_pixel+width-1. */
625 if (w
->pseudo_window_p
)
628 right_x
= WINDOW_TOTAL_WIDTH (w
) - 1;
629 top_y
= WINDOW_TOP_EDGE_Y (w
);
630 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
634 left_x
= WINDOW_BOX_LEFT_EDGE_X (w
);
635 right_x
= WINDOW_BOX_RIGHT_EDGE_X (w
) - 1;
636 top_y
= WINDOW_TOP_EDGE_Y (w
);
637 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
640 /* Outside any interesting row? */
641 if (*y
< top_y
|| *y
>= bottom_y
)
644 /* On the mode line or header line? If it's near the start of
645 the mode or header line of window that's has a horizontal
646 sibling, say it's on the vertical line. That's to be able
647 to resize windows horizontally in case we're using toolkit
650 if (WINDOW_WANTS_MODELINE_P (w
)
651 && *y
>= bottom_y
- CURRENT_MODE_LINE_HEIGHT (w
))
655 header_vertical_border_check
:
656 /* We're somewhere on the mode line. We consider the place
657 between mode lines of horizontally adjacent mode lines
658 as the vertical border. If scroll bars on the left,
659 return the right window. */
660 if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w
)
661 || WINDOW_RIGHTMOST_P (w
))
663 if (!WINDOW_LEFTMOST_P (w
) && abs (*x
- x0
) < grabbable_width
)
665 /* Convert X and Y to window relative coordinates.
666 Vertical border is at the left edge of window. */
667 *x
= max (0, *x
- x0
);
669 return ON_VERTICAL_BORDER
;
674 if (abs (*x
- x1
) < grabbable_width
)
676 /* Convert X and Y to window relative coordinates.
677 Vertical border is at the right edge of window. */
678 *x
= min (x1
, *x
) - x0
;
680 return ON_VERTICAL_BORDER
;
684 if (*x
< x0
|| *x
>= x1
)
687 /* Convert X and Y to window relative coordinates.
688 Mode line starts at left edge of window. */
694 if (WINDOW_WANTS_HEADER_LINE_P (w
)
695 && *y
< top_y
+ CURRENT_HEADER_LINE_HEIGHT (w
))
697 part
= ON_HEADER_LINE
;
698 goto header_vertical_border_check
;
701 if (*x
< x0
|| *x
>= x1
)
704 /* Outside any interesting column? */
705 if (*x
< left_x
|| *x
> right_x
)
708 return ON_SCROLL_BAR
;
711 lmargin_width
= window_box_width (w
, LEFT_MARGIN_AREA
);
712 rmargin_width
= window_box_width (w
, RIGHT_MARGIN_AREA
);
714 text_left
= window_box_left (w
, TEXT_AREA
);
715 text_right
= text_left
+ window_box_width (w
, TEXT_AREA
);
717 if (FRAME_WINDOW_P (f
))
719 if (!w
->pseudo_window_p
720 && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w
)
721 && !WINDOW_RIGHTMOST_P (w
)
722 && (abs (*x
- right_x
) < grabbable_width
))
724 /* Convert X and Y to window relative coordinates.
725 Vertical border is at the right edge of window. */
726 *x
= min (right_x
, *x
) - left_x
;
728 return ON_VERTICAL_BORDER
;
733 /* Need to say "*x > right_x" rather than >=, since on character
734 terminals, the vertical line's x coordinate is right_x. */
735 if (!w
->pseudo_window_p
736 && !WINDOW_RIGHTMOST_P (w
)
737 && *x
> right_x
- ux
)
739 /* On the border on the right side of the window? Assume that
740 this area begins at RIGHT_X minus a canonical char width. */
741 *x
= min (right_x
, *x
) - left_x
;
743 return ON_VERTICAL_BORDER
;
749 if (lmargin_width
> 0
750 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
751 ? (*x
>= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
))
752 : (*x
< left_x
+ lmargin_width
)))
755 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
756 *x
-= WINDOW_LEFT_FRINGE_WIDTH (w
);
758 return ON_LEFT_MARGIN
;
761 /* Convert X and Y to window-relative pixel coordinates. */
764 return ON_LEFT_FRINGE
;
767 if (*x
>= text_right
)
769 if (rmargin_width
> 0
770 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
771 ? (*x
< right_x
- WINDOW_RIGHT_FRINGE_WIDTH (w
))
772 : (*x
>= right_x
- rmargin_width
)))
774 *x
-= right_x
- rmargin_width
;
775 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
776 *x
+= WINDOW_RIGHT_FRINGE_WIDTH (w
);
778 return ON_RIGHT_MARGIN
;
781 /* Convert X and Y to window-relative pixel coordinates. */
782 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
784 return ON_RIGHT_FRINGE
;
787 /* Everything special ruled out - must be on text area */
794 DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p
,
795 Scoordinates_in_window_p
, 2, 2, 0,
796 doc
: /* Return non-nil if COORDINATES are in WINDOW.
797 COORDINATES is a cons of the form (X . Y), X and Y being distances
798 measured in characters from the upper-left corner of the frame.
799 \(0 . 0) denotes the character in the upper left corner of the
801 If COORDINATES are in the text portion of WINDOW,
802 the coordinates relative to the window are returned.
803 If they are in the mode line of WINDOW, `mode-line' is returned.
804 If they are in the top mode line of WINDOW, `header-line' is returned.
805 If they are in the left fringe of WINDOW, `left-fringe' is returned.
806 If they are in the right fringe of WINDOW, `right-fringe' is returned.
807 If they are on the border between WINDOW and its right sibling,
808 `vertical-line' is returned.
809 If they are in the windows's left or right marginal areas, `left-margin'\n\
810 or `right-margin' is returned. */)
811 (coordinates
, window
)
812 register Lisp_Object coordinates
, window
;
819 CHECK_WINDOW (window
);
820 w
= XWINDOW (window
);
821 f
= XFRAME (w
->frame
);
822 CHECK_CONS (coordinates
);
823 lx
= Fcar (coordinates
);
824 ly
= Fcdr (coordinates
);
825 CHECK_NUMBER_OR_FLOAT (lx
);
826 CHECK_NUMBER_OR_FLOAT (ly
);
827 x
= FRAME_PIXEL_X_FROM_CANON_X (f
, lx
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
828 y
= FRAME_PIXEL_Y_FROM_CANON_Y (f
, ly
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
830 switch (coordinates_in_window (w
, &x
, &y
))
836 /* X and Y are now window relative pixel coordinates. Convert
837 them to canonical char units before returning them. */
838 return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f
, x
),
839 FRAME_CANON_Y_FROM_PIXEL_Y (f
, y
));
844 case ON_VERTICAL_BORDER
:
845 return Qvertical_line
;
853 case ON_RIGHT_FRINGE
:
854 return Qright_fringe
;
859 case ON_RIGHT_MARGIN
:
860 return Qright_margin
;
863 /* Historically we are supposed to return nil in this case. */
872 /* Callback for foreach_window, used in window_from_coordinates.
873 Check if window W contains coordinates specified by USER_DATA which
874 is actually a pointer to a struct check_window_data CW.
876 Check if window W contains coordinates *CW->x and *CW->y. If it
877 does, return W in *CW->window, as Lisp_Object, and return in
878 *CW->part the part of the window under coordinates *X,*Y. Return
879 zero from this function to stop iterating over windows. */
881 struct check_window_data
885 enum window_part
*part
;
889 check_window_containing (w
, user_data
)
893 struct check_window_data
*cw
= (struct check_window_data
*) user_data
;
894 enum window_part found
;
897 found
= coordinates_in_window (w
, cw
->x
, cw
->y
);
898 if (found
!= ON_NOTHING
)
901 XSETWINDOW (*cw
->window
, w
);
909 /* Find the window containing frame-relative pixel position X/Y and
910 return it as a Lisp_Object.
912 If X, Y is on one of the window's special `window_part' elements,
913 set *PART to the id of that element, and return X and Y converted
914 to window relative coordinates in WX and WY.
916 If there is no window under X, Y return nil and leave *PART
917 unmodified. TOOL_BAR_P non-zero means detect tool-bar windows.
919 This function was previously implemented with a loop cycling over
920 windows with Fnext_window, and starting with the frame's selected
921 window. It turned out that this doesn't work with an
922 implementation of next_window using Vwindow_list, because
923 FRAME_SELECTED_WINDOW (F) is not always contained in the window
924 tree of F when this function is called asynchronously from
925 note_mouse_highlight. The original loop didn't terminate in this
929 window_from_coordinates (f
, x
, y
, part
, wx
, wy
, tool_bar_p
)
932 enum window_part
*part
;
937 struct check_window_data cw
;
938 enum window_part dummy
;
944 cw
.window
= &window
, cw
.x
= &x
, cw
.y
= &y
; cw
.part
= part
;
945 foreach_window (f
, check_window_containing
, &cw
);
947 /* If not found above, see if it's in the tool bar window, if a tool
951 && WINDOWP (f
->tool_bar_window
)
952 && WINDOW_TOTAL_LINES (XWINDOW (f
->tool_bar_window
)) > 0
953 && (coordinates_in_window (XWINDOW (f
->tool_bar_window
), &x
, &y
)
957 window
= f
->tool_bar_window
;
966 DEFUN ("window-at", Fwindow_at
, Swindow_at
, 2, 3, 0,
967 doc
: /* Return window containing coordinates X and Y on FRAME.
968 If omitted, FRAME defaults to the currently selected frame.
969 The top left corner of the frame is considered to be row 0,
972 Lisp_Object x
, y
, frame
;
977 frame
= selected_frame
;
978 CHECK_LIVE_FRAME (frame
);
981 /* Check that arguments are integers or floats. */
982 CHECK_NUMBER_OR_FLOAT (x
);
983 CHECK_NUMBER_OR_FLOAT (y
);
985 return window_from_coordinates (f
,
986 (FRAME_PIXEL_X_FROM_CANON_X (f
, x
)
987 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
988 (FRAME_PIXEL_Y_FROM_CANON_Y (f
, y
)
989 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
993 DEFUN ("window-point", Fwindow_point
, Swindow_point
, 0, 1, 0,
994 doc
: /* Return current value of point in WINDOW.
995 For a nonselected window, this is the value point would have
996 if that window were selected.
998 Note that, when WINDOW is the selected window and its buffer
999 is also currently selected, the value returned is the same as (point).
1000 It would be more strictly correct to return the `top-level' value
1001 of point, outside of any save-excursion forms.
1002 But that is hard to define. */)
1006 register struct window
*w
= decode_window (window
);
1008 if (w
== XWINDOW (selected_window
)
1009 && current_buffer
== XBUFFER (w
->buffer
))
1011 return Fmarker_position (w
->pointm
);
1014 DEFUN ("window-start", Fwindow_start
, Swindow_start
, 0, 1, 0,
1015 doc
: /* Return position at which display currently starts in WINDOW.
1016 This is updated by redisplay or by calling `set-window-start'. */)
1020 return Fmarker_position (decode_window (window
)->start
);
1023 /* This is text temporarily removed from the doc string below.
1025 This function returns nil if the position is not currently known.
1026 That happens when redisplay is preempted and doesn't finish.
1027 If in that case you want to compute where the end of the window would
1028 have been if redisplay had finished, do this:
1030 (goto-char (window-start window))
1031 (vertical-motion (1- (window-height window)) window)
1034 DEFUN ("window-end", Fwindow_end
, Swindow_end
, 0, 2, 0,
1035 doc
: /* Return position at which display currently ends in WINDOW.
1036 This is updated by redisplay, when it runs to completion.
1037 Simply changing the buffer text or setting `window-start'
1038 does not update this value.
1039 Return nil if there is no recorded value. \(This can happen if the
1040 last redisplay of WINDOW was preempted, and did not finish.)
1041 If UPDATE is non-nil, compute the up-to-date position
1042 if it isn't already recorded. */)
1044 Lisp_Object window
, update
;
1047 struct window
*w
= decode_window (window
);
1053 #if 0 /* This change broke some things. We should make it later. */
1054 /* If we don't know the end position, return nil.
1055 The user can compute it with vertical-motion if he wants to.
1056 It would be nicer to do it automatically,
1057 but that's so slow that it would probably bother people. */
1058 if (NILP (w
->window_end_valid
))
1063 && ! (! NILP (w
->window_end_valid
)
1064 && XFASTINT (w
->last_modified
) >= MODIFF
)
1067 struct text_pos startp
;
1069 struct buffer
*old_buffer
= NULL
, *b
= XBUFFER (buf
);
1071 /* In case W->start is out of the range, use something
1072 reasonable. This situation occurred when loading a file with
1073 `-l' containing a call to `rmail' with subsequent other
1074 commands. At the end, W->start happened to be BEG, while
1075 rmail had already narrowed the buffer. */
1076 if (XMARKER (w
->start
)->charpos
< BEGV
)
1077 SET_TEXT_POS (startp
, BEGV
, BEGV_BYTE
);
1078 else if (XMARKER (w
->start
)->charpos
> ZV
)
1079 SET_TEXT_POS (startp
, ZV
, ZV_BYTE
);
1081 SET_TEXT_POS_FROM_MARKER (startp
, w
->start
);
1083 /* Cannot use Fvertical_motion because that function doesn't
1084 cope with variable-height lines. */
1085 if (b
!= current_buffer
)
1087 old_buffer
= current_buffer
;
1088 set_buffer_internal (b
);
1091 start_display (&it
, w
, startp
);
1092 move_it_vertically (&it
, window_box_height (w
));
1093 if (it
.current_y
< it
.last_visible_y
)
1094 move_it_past_eol (&it
);
1095 value
= make_number (IT_CHARPOS (it
));
1098 set_buffer_internal (old_buffer
);
1101 XSETINT (value
, BUF_Z (XBUFFER (buf
)) - XFASTINT (w
->window_end_pos
));
1106 DEFUN ("set-window-point", Fset_window_point
, Sset_window_point
, 2, 2, 0,
1107 doc
: /* Make point value in WINDOW be at position POS in WINDOW's buffer.
1110 Lisp_Object window
, pos
;
1112 register struct window
*w
= decode_window (window
);
1114 CHECK_NUMBER_COERCE_MARKER (pos
);
1115 if (w
== XWINDOW (selected_window
)
1116 && XBUFFER (w
->buffer
) == current_buffer
)
1119 set_marker_restricted (w
->pointm
, pos
, w
->buffer
);
1121 /* We have to make sure that redisplay updates the window to show
1122 the new value of point. */
1123 if (!EQ (window
, selected_window
))
1124 ++windows_or_buffers_changed
;
1129 DEFUN ("set-window-start", Fset_window_start
, Sset_window_start
, 2, 3, 0,
1130 doc
: /* Make display in WINDOW start at position POS in WINDOW's buffer.
1132 Optional third arg NOFORCE non-nil inhibits next redisplay
1133 from overriding motion of point in order to display at this exact start. */)
1134 (window
, pos
, noforce
)
1135 Lisp_Object window
, pos
, noforce
;
1137 register struct window
*w
= decode_window (window
);
1139 CHECK_NUMBER_COERCE_MARKER (pos
);
1140 set_marker_restricted (w
->start
, pos
, w
->buffer
);
1141 /* this is not right, but much easier than doing what is right. */
1142 w
->start_at_line_beg
= Qnil
;
1144 w
->force_start
= Qt
;
1145 w
->update_mode_line
= Qt
;
1146 XSETFASTINT (w
->last_modified
, 0);
1147 XSETFASTINT (w
->last_overlay_modified
, 0);
1148 if (!EQ (window
, selected_window
))
1149 windows_or_buffers_changed
++;
1154 DEFUN ("window-dedicated-p", Fwindow_dedicated_p
, Swindow_dedicated_p
,
1156 doc
: /* Return WINDOW's dedicated object, usually t or nil.
1157 See also `set-window-dedicated-p'. */)
1161 return decode_window (window
)->dedicated
;
1164 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p
,
1165 Sset_window_dedicated_p
, 2, 2, 0,
1166 doc
: /* Control whether WINDOW is dedicated to the buffer it displays.
1167 If it is dedicated, Emacs will not automatically change
1168 which buffer appears in it.
1169 The second argument is the new value for the dedication flag;
1170 non-nil means yes. */)
1172 Lisp_Object window
, arg
;
1174 register struct window
*w
= decode_window (window
);
1178 return w
->dedicated
;
1181 DEFUN ("window-display-table", Fwindow_display_table
, Swindow_display_table
,
1183 doc
: /* Return the display-table that WINDOW is using. */)
1187 return decode_window (window
)->display_table
;
1190 /* Get the display table for use on window W. This is either W's
1191 display table or W's buffer's display table. Ignore the specified
1192 tables if they are not valid; if no valid table is specified,
1195 struct Lisp_Char_Table
*
1196 window_display_table (w
)
1199 struct Lisp_Char_Table
*dp
= NULL
;
1201 if (DISP_TABLE_P (w
->display_table
))
1202 dp
= XCHAR_TABLE (w
->display_table
);
1203 else if (BUFFERP (w
->buffer
))
1205 struct buffer
*b
= XBUFFER (w
->buffer
);
1207 if (DISP_TABLE_P (b
->display_table
))
1208 dp
= XCHAR_TABLE (b
->display_table
);
1209 else if (DISP_TABLE_P (Vstandard_display_table
))
1210 dp
= XCHAR_TABLE (Vstandard_display_table
);
1216 DEFUN ("set-window-display-table", Fset_window_display_table
, Sset_window_display_table
, 2, 2, 0,
1217 doc
: /* Set WINDOW's display-table to TABLE. */)
1219 register Lisp_Object window
, table
;
1221 register struct window
*w
;
1223 w
= decode_window (window
);
1224 w
->display_table
= table
;
1228 /* Record info on buffer window w is displaying
1229 when it is about to cease to display that buffer. */
1232 register struct window
*w
;
1239 if (b
!= XMARKER (w
->pointm
)->buffer
)
1243 if (w
== XWINDOW (selected_window
)
1244 || ! EQ (buf
, XWINDOW (selected_window
)->buffer
))
1245 /* Do this except when the selected window's buffer
1246 is being removed from some other window. */
1248 /* last_window_start records the start position that this buffer
1249 had in the last window to be disconnected from it.
1250 Now that this statement is unconditional,
1251 it is possible for the buffer to be displayed in the
1252 selected window, while last_window_start reflects another
1253 window which was recently showing the same buffer.
1254 Some people might say that might be a good thing. Let's see. */
1255 b
->last_window_start
= marker_position (w
->start
);
1257 /* Point in the selected window's buffer
1258 is actually stored in that buffer, and the window's pointm isn't used.
1259 So don't clobber point in that buffer. */
1260 if (! EQ (buf
, XWINDOW (selected_window
)->buffer
)
1261 /* This line helps to fix Horsley's testbug.el bug. */
1262 && !(WINDOWP (b
->last_selected_window
)
1263 && w
!= XWINDOW (b
->last_selected_window
)
1264 && EQ (buf
, XWINDOW (b
->last_selected_window
)->buffer
)))
1265 temp_set_point_both (b
,
1266 clip_to_bounds (BUF_BEGV (b
),
1267 XMARKER (w
->pointm
)->charpos
,
1269 clip_to_bounds (BUF_BEGV_BYTE (b
),
1270 marker_byte_position (w
->pointm
),
1273 if (WINDOWP (b
->last_selected_window
)
1274 && w
== XWINDOW (b
->last_selected_window
))
1275 b
->last_selected_window
= Qnil
;
1278 /* Put replacement into the window structure in place of old. */
1280 replace_window (old
, replacement
)
1281 Lisp_Object old
, replacement
;
1283 register Lisp_Object tem
;
1284 register struct window
*o
= XWINDOW (old
), *p
= XWINDOW (replacement
);
1286 /* If OLD is its frame's root_window, then replacement is the new
1287 root_window for that frame. */
1289 if (EQ (old
, FRAME_ROOT_WINDOW (XFRAME (o
->frame
))))
1290 FRAME_ROOT_WINDOW (XFRAME (o
->frame
)) = replacement
;
1292 p
->left_col
= o
->left_col
;
1293 p
->top_line
= o
->top_line
;
1294 p
->total_cols
= o
->total_cols
;
1295 p
->total_lines
= o
->total_lines
;
1296 p
->desired_matrix
= p
->current_matrix
= 0;
1298 bzero (&p
->cursor
, sizeof (p
->cursor
));
1299 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
1300 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
1301 p
->phys_cursor_type
= -1;
1302 p
->phys_cursor_width
= -1;
1303 p
->must_be_updated_p
= 0;
1304 p
->pseudo_window_p
= 0;
1305 XSETFASTINT (p
->window_end_vpos
, 0);
1306 XSETFASTINT (p
->window_end_pos
, 0);
1307 p
->window_end_valid
= Qnil
;
1308 p
->frozen_window_start_p
= 0;
1309 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
1311 p
->next
= tem
= o
->next
;
1313 XWINDOW (tem
)->prev
= replacement
;
1315 p
->prev
= tem
= o
->prev
;
1317 XWINDOW (tem
)->next
= replacement
;
1319 p
->parent
= tem
= o
->parent
;
1322 if (EQ (XWINDOW (tem
)->vchild
, old
))
1323 XWINDOW (tem
)->vchild
= replacement
;
1324 if (EQ (XWINDOW (tem
)->hchild
, old
))
1325 XWINDOW (tem
)->hchild
= replacement
;
1328 /*** Here, if replacement is a vertical combination
1329 and so is its new parent, we should make replacement's
1330 children be children of that parent instead. ***/
1333 DEFUN ("delete-window", Fdelete_window
, Sdelete_window
, 0, 1, "",
1334 doc
: /* Remove WINDOW from the display. Default is selected window. */)
1336 register Lisp_Object window
;
1338 delete_window (window
);
1340 if (! NILP (Vwindow_configuration_change_hook
)
1341 && ! NILP (Vrun_hooks
))
1342 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
1348 delete_window (window
)
1349 register Lisp_Object window
;
1351 register Lisp_Object tem
, parent
, sib
;
1352 register struct window
*p
;
1353 register struct window
*par
;
1356 /* Because this function is called by other C code on non-leaf
1357 windows, the CHECK_LIVE_WINDOW macro would choke inappropriately,
1358 so we can't decode_window here. */
1360 window
= selected_window
;
1362 CHECK_WINDOW (window
);
1363 p
= XWINDOW (window
);
1365 /* It's a no-op to delete an already-deleted window. */
1366 if (NILP (p
->buffer
)
1368 && NILP (p
->vchild
))
1373 error ("Attempt to delete minibuffer or sole ordinary window");
1374 par
= XWINDOW (parent
);
1376 windows_or_buffers_changed
++;
1377 Vwindow_list
= Qnil
;
1378 f
= XFRAME (WINDOW_FRAME (p
));
1379 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
1381 /* Are we trying to delete any frame's selected window? */
1383 Lisp_Object swindow
, pwindow
;
1385 /* See if the frame's selected window is either WINDOW
1386 or any subwindow of it, by finding all that window's parents
1387 and comparing each one with WINDOW. */
1388 swindow
= FRAME_SELECTED_WINDOW (f
);
1393 while (!NILP (pwindow
))
1395 if (EQ (window
, pwindow
))
1397 pwindow
= XWINDOW (pwindow
)->parent
;
1400 /* If the window being deleted is not a parent of SWINDOW,
1401 then SWINDOW is ok as the new selected window. */
1402 if (!EQ (window
, pwindow
))
1404 /* Otherwise, try another window for SWINDOW. */
1405 swindow
= Fnext_window (swindow
, Qlambda
, Qnil
);;
1407 /* If we get back to the frame's selected window,
1408 it means there was no acceptable alternative,
1409 so we cannot delete. */
1410 if (EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1411 error ("Cannot delete window");
1414 /* If we need to change SWINDOW, do it. */
1415 if (! EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1417 /* If we're about to delete the selected window on the
1418 selected frame, then we should use Fselect_window to select
1419 the new window. On the other hand, if we're about to
1420 delete the selected window on any other frame, we shouldn't do
1421 anything but set the frame's selected_window slot. */
1422 if (EQ (FRAME_SELECTED_WINDOW (f
), selected_window
))
1423 Fselect_window (swindow
, Qnil
);
1425 FRAME_SELECTED_WINDOW (f
) = swindow
;
1429 /* Now we know we can delete this one. */
1430 window_deletion_count
++;
1433 /* tem is null for dummy parent windows
1434 (which have inferiors but not any contents themselves) */
1438 unchain_marker (XMARKER (p
->pointm
));
1439 unchain_marker (XMARKER (p
->start
));
1442 /* Free window glyph matrices. It is sure that they are allocated
1443 again when ADJUST_GLYPHS is called. Block input so that expose
1444 events and other events that access glyph matrices are not
1445 processed while we are changing them. */
1447 free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f
)));
1451 XWINDOW (tem
)->prev
= p
->prev
;
1455 XWINDOW (tem
)->next
= p
->next
;
1457 if (EQ (window
, par
->hchild
))
1458 par
->hchild
= p
->next
;
1459 if (EQ (window
, par
->vchild
))
1460 par
->vchild
= p
->next
;
1462 /* Find one of our siblings to give our space to. */
1466 /* If p gives its space to its next sibling, that sibling needs
1467 to have its top/left side pulled back to where p's is.
1468 set_window_{height,width} will re-position the sibling's
1471 XWINDOW (sib
)->top_line
= p
->top_line
;
1472 XWINDOW (sib
)->left_col
= p
->left_col
;
1475 /* Stretch that sibling. */
1476 if (!NILP (par
->vchild
))
1477 set_window_height (sib
,
1478 XFASTINT (XWINDOW (sib
)->total_lines
) + XFASTINT (p
->total_lines
),
1480 if (!NILP (par
->hchild
))
1481 set_window_width (sib
,
1482 XFASTINT (XWINDOW (sib
)->total_cols
) + XFASTINT (p
->total_cols
),
1485 /* If parent now has only one child,
1486 put the child into the parent's place. */
1490 if (NILP (XWINDOW (tem
)->next
)) {
1491 replace_window (parent
, tem
);
1492 par
= XWINDOW (tem
);
1495 /* Since we may be deleting combination windows, we must make sure that
1496 not only p but all its children have been marked as deleted. */
1497 if (! NILP (p
->hchild
))
1498 delete_all_subwindows (XWINDOW (p
->hchild
));
1499 else if (! NILP (p
->vchild
))
1500 delete_all_subwindows (XWINDOW (p
->vchild
));
1502 /* Mark this window as deleted. */
1503 p
->buffer
= p
->hchild
= p
->vchild
= Qnil
;
1505 if (! NILP (par
->parent
))
1506 par
= XWINDOW (par
->parent
);
1508 /* Check if we have a v/hchild with a v/hchild. In that case remove
1511 if (! NILP (par
->vchild
) && ! NILP (XWINDOW (par
->vchild
)->vchild
))
1513 p
= XWINDOW (par
->vchild
);
1514 par
->vchild
= p
->vchild
;
1517 else if (! NILP (par
->hchild
) && ! NILP (XWINDOW (par
->hchild
)->hchild
))
1519 p
= XWINDOW (par
->hchild
);
1520 par
->hchild
= p
->hchild
;
1528 while (! NILP (tem
)) {
1529 XWINDOW (tem
)->parent
= p
->parent
;
1530 if (NILP (XWINDOW (tem
)->next
))
1532 tem
= XWINDOW (tem
)->next
;
1535 /* The next of the v/hchild we are removing is now the next of the
1536 last child for the v/hchild:
1537 Before v/hchild -> v/hchild -> next1 -> next2
1540 After: v/hchild -> next1 -> next2 -> next3
1542 XWINDOW (tem
)->next
= p
->next
;
1543 if (! NILP (p
->next
))
1544 XWINDOW (p
->next
)->prev
= tem
;
1546 p
->next
= p
->prev
= p
->vchild
= p
->hchild
= p
->buffer
= Qnil
;
1550 /* Adjust glyph matrices. */
1557 /***********************************************************************
1559 ***********************************************************************/
1561 /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
1562 pointer. This is a callback function for foreach_window, used in
1563 function window_list. */
1566 add_window_to_list (w
, user_data
)
1570 Lisp_Object
*list
= (Lisp_Object
*) user_data
;
1572 XSETWINDOW (window
, w
);
1573 *list
= Fcons (window
, *list
);
1578 /* Return a list of all windows, for use by next_window. If
1579 Vwindow_list is a list, return that list. Otherwise, build a new
1580 list, cache it in Vwindow_list, and return that. */
1585 if (!CONSP (Vwindow_list
))
1589 Vwindow_list
= Qnil
;
1590 for (tail
= Vframe_list
; CONSP (tail
); tail
= XCDR (tail
))
1592 Lisp_Object args
[2];
1594 /* We are visiting windows in canonical order, and add
1595 new windows at the front of args[1], which means we
1596 have to reverse this list at the end. */
1598 foreach_window (XFRAME (XCAR (tail
)), add_window_to_list
, &args
[1]);
1599 args
[0] = Vwindow_list
;
1600 args
[1] = Fnreverse (args
[1]);
1601 Vwindow_list
= Fnconc (2, args
);
1605 return Vwindow_list
;
1609 /* Value is non-zero if WINDOW satisfies the constraints given by
1610 OWINDOW, MINIBUF and ALL_FRAMES.
1612 MINIBUF t means WINDOW may be minibuffer windows.
1613 `lambda' means WINDOW may not be a minibuffer window.
1614 a window means a specific minibuffer window
1616 ALL_FRAMES t means search all frames,
1617 nil means search just current frame,
1618 `visible' means search just visible frames,
1619 0 means search visible and iconified frames,
1620 a window means search the frame that window belongs to,
1621 a frame means consider windows on that frame, only. */
1624 candidate_window_p (window
, owindow
, minibuf
, all_frames
)
1625 Lisp_Object window
, owindow
, minibuf
, all_frames
;
1627 struct window
*w
= XWINDOW (window
);
1628 struct frame
*f
= XFRAME (w
->frame
);
1629 int candidate_p
= 1;
1631 if (!BUFFERP (w
->buffer
))
1633 else if (MINI_WINDOW_P (w
)
1634 && (EQ (minibuf
, Qlambda
)
1635 || (WINDOWP (minibuf
) && !EQ (minibuf
, window
))))
1637 /* If MINIBUF is `lambda' don't consider any mini-windows.
1638 If it is a window, consider only that one. */
1641 else if (EQ (all_frames
, Qt
))
1643 else if (NILP (all_frames
))
1645 xassert (WINDOWP (owindow
));
1646 candidate_p
= EQ (w
->frame
, XWINDOW (owindow
)->frame
);
1648 else if (EQ (all_frames
, Qvisible
))
1650 FRAME_SAMPLE_VISIBILITY (f
);
1651 candidate_p
= FRAME_VISIBLE_P (f
);
1653 else if (INTEGERP (all_frames
) && XINT (all_frames
) == 0)
1655 FRAME_SAMPLE_VISIBILITY (f
);
1656 candidate_p
= FRAME_VISIBLE_P (f
) || FRAME_ICONIFIED_P (f
);
1658 else if (WINDOWP (all_frames
))
1659 candidate_p
= (EQ (FRAME_MINIBUF_WINDOW (f
), all_frames
)
1660 || EQ (XWINDOW (all_frames
)->frame
, w
->frame
)
1661 || EQ (XWINDOW (all_frames
)->frame
, FRAME_FOCUS_FRAME (f
)));
1662 else if (FRAMEP (all_frames
))
1663 candidate_p
= EQ (all_frames
, w
->frame
);
1669 /* Decode arguments as allowed by Fnext_window, Fprevious_window, and
1670 Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
1674 decode_next_window_args (window
, minibuf
, all_frames
)
1675 Lisp_Object
*window
, *minibuf
, *all_frames
;
1678 *window
= selected_window
;
1680 CHECK_LIVE_WINDOW (*window
);
1682 /* MINIBUF nil may or may not include minibuffers. Decide if it
1684 if (NILP (*minibuf
))
1685 *minibuf
= minibuf_level
? minibuf_window
: Qlambda
;
1686 else if (!EQ (*minibuf
, Qt
))
1689 /* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
1690 => count none of them, or a specific minibuffer window (the
1691 active one) to count. */
1693 /* ALL_FRAMES nil doesn't specify which frames to include. */
1694 if (NILP (*all_frames
))
1695 *all_frames
= (!EQ (*minibuf
, Qlambda
)
1696 ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window
)->frame
))
1698 else if (EQ (*all_frames
, Qvisible
))
1700 else if (EQ (*all_frames
, make_number (0)))
1702 else if (FRAMEP (*all_frames
))
1704 else if (!EQ (*all_frames
, Qt
))
1707 /* Now *ALL_FRAMES is t meaning search all frames, nil meaning
1708 search just current frame, `visible' meaning search just visible
1709 frames, 0 meaning search visible and iconified frames, or a
1710 window, meaning search the frame that window belongs to, or a
1711 frame, meaning consider windows on that frame, only. */
1715 /* Return the next or previous window of WINDOW in canonical ordering
1716 of windows. NEXT_P non-zero means return the next window. See the
1717 documentation string of next-window for the meaning of MINIBUF and
1721 next_window (window
, minibuf
, all_frames
, next_p
)
1722 Lisp_Object window
, minibuf
, all_frames
;
1725 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1727 /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
1728 return the first window on the frame. */
1729 if (FRAMEP (all_frames
)
1730 && !EQ (all_frames
, XWINDOW (window
)->frame
))
1731 return Fframe_first_window (all_frames
);
1737 /* Find WINDOW in the list of all windows. */
1738 list
= Fmemq (window
, window_list ());
1740 /* Scan forward from WINDOW to the end of the window list. */
1742 for (list
= XCDR (list
); CONSP (list
); list
= XCDR (list
))
1743 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1746 /* Scan from the start of the window list up to WINDOW. */
1748 for (list
= Vwindow_list
;
1749 CONSP (list
) && !EQ (XCAR (list
), window
);
1751 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1755 window
= XCAR (list
);
1759 Lisp_Object candidate
, list
;
1761 /* Scan through the list of windows for candidates. If there are
1762 candidate windows in front of WINDOW, the last one of these
1763 is the one we want. If there are candidates following WINDOW
1764 in the list, again the last one of these is the one we want. */
1766 for (list
= window_list (); CONSP (list
); list
= XCDR (list
))
1768 if (EQ (XCAR (list
), window
))
1770 if (WINDOWP (candidate
))
1773 else if (candidate_window_p (XCAR (list
), window
, minibuf
,
1775 candidate
= XCAR (list
);
1778 if (WINDOWP (candidate
))
1786 DEFUN ("next-window", Fnext_window
, Snext_window
, 0, 3, 0,
1787 doc
: /* Return next window after WINDOW in canonical ordering of windows.
1788 If omitted, WINDOW defaults to the selected window.
1790 Optional second arg MINIBUF t means count the minibuffer window even
1791 if not active. MINIBUF nil or omitted means count the minibuffer iff
1792 it is active. MINIBUF neither t nor nil means not to count the
1793 minibuffer even if it is active.
1795 Several frames may share a single minibuffer; if the minibuffer
1796 counts, all windows on all frames that share that minibuffer count
1797 too. Therefore, `next-window' can be used to iterate through the
1798 set of windows even when the minibuffer is on another frame. If the
1799 minibuffer does not count, only windows from WINDOW's frame count.
1801 Optional third arg ALL-FRAMES t means include windows on all frames.
1802 ALL-FRAMES nil or omitted means cycle within the frames as specified
1803 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1804 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1805 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1806 Anything else means restrict to WINDOW's frame.
1808 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1809 `next-window' to iterate through the entire cycle of acceptable
1810 windows, eventually ending up back at the window you started with.
1811 `previous-window' traverses the same cycle, in the reverse order. */)
1812 (window
, minibuf
, all_frames
)
1813 Lisp_Object window
, minibuf
, all_frames
;
1815 return next_window (window
, minibuf
, all_frames
, 1);
1819 DEFUN ("previous-window", Fprevious_window
, Sprevious_window
, 0, 3, 0,
1820 doc
: /* Return the window preceding WINDOW in canonical ordering of windows.
1821 If omitted, WINDOW defaults to the selected window.
1823 Optional second arg MINIBUF t means count the minibuffer window even
1824 if not active. MINIBUF nil or omitted means count the minibuffer iff
1825 it is active. MINIBUF neither t nor nil means not to count the
1826 minibuffer even if it is active.
1828 Several frames may share a single minibuffer; if the minibuffer
1829 counts, all windows on all frames that share that minibuffer count
1830 too. Therefore, `previous-window' can be used to iterate through
1831 the set of windows even when the minibuffer is on another frame. If
1832 the minibuffer does not count, only windows from WINDOW's frame count
1834 Optional third arg ALL-FRAMES t means include windows on all frames.
1835 ALL-FRAMES nil or omitted means cycle within the frames as specified
1836 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1837 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1838 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1839 Anything else means restrict to WINDOW's frame.
1841 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1842 `previous-window' to iterate through the entire cycle of acceptable
1843 windows, eventually ending up back at the window you started with.
1844 `next-window' traverses the same cycle, in the reverse order. */)
1845 (window
, minibuf
, all_frames
)
1846 Lisp_Object window
, minibuf
, all_frames
;
1848 return next_window (window
, minibuf
, all_frames
, 0);
1852 DEFUN ("other-window", Fother_window
, Sother_window
, 1, 2, "p",
1853 doc
: /* Select the ARG'th different window on this frame.
1854 All windows on current frame are arranged in a cyclic order.
1855 This command selects the window ARG steps away in that order.
1856 A negative ARG moves in the opposite order. The optional second
1857 argument ALL-FRAMES has the same meaning as in `next-window', which see. */)
1859 Lisp_Object arg
, all_frames
;
1865 window
= selected_window
;
1867 for (i
= XINT (arg
); i
> 0; --i
)
1868 window
= Fnext_window (window
, Qnil
, all_frames
);
1870 window
= Fprevious_window (window
, Qnil
, all_frames
);
1872 Fselect_window (window
, Qnil
);
1877 DEFUN ("window-list", Fwindow_list
, Swindow_list
, 0, 3, 0,
1878 doc
: /* Return a list of windows on FRAME, starting with WINDOW.
1879 FRAME nil or omitted means use the selected frame.
1880 WINDOW nil or omitted means use the selected window.
1881 MINIBUF t means include the minibuffer window, even if it isn't active.
1882 MINIBUF nil or omitted means include the minibuffer window only
1884 MINIBUF neither nil nor t means never include the minibuffer window. */)
1885 (frame
, minibuf
, window
)
1886 Lisp_Object frame
, minibuf
, window
;
1889 window
= FRAMEP (frame
) ? XFRAME (frame
)->selected_window
: selected_window
;
1890 CHECK_WINDOW (window
);
1892 frame
= selected_frame
;
1894 if (!EQ (frame
, XWINDOW (window
)->frame
))
1895 error ("Window is on a different frame");
1897 return window_list_1 (window
, minibuf
, frame
);
1901 /* Return a list of windows in canonical ordering. Arguments are like
1902 for `next-window'. */
1905 window_list_1 (window
, minibuf
, all_frames
)
1906 Lisp_Object window
, minibuf
, all_frames
;
1908 Lisp_Object tail
, list
, rest
;
1910 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1913 for (tail
= window_list (); CONSP (tail
); tail
= XCDR (tail
))
1914 if (candidate_window_p (XCAR (tail
), window
, minibuf
, all_frames
))
1915 list
= Fcons (XCAR (tail
), list
);
1917 /* Rotate the list to start with WINDOW. */
1918 list
= Fnreverse (list
);
1919 rest
= Fmemq (window
, list
);
1920 if (!NILP (rest
) && !EQ (rest
, list
))
1922 for (tail
= list
; !EQ (XCDR (tail
), rest
); tail
= XCDR (tail
))
1924 XSETCDR (tail
, Qnil
);
1925 list
= nconc2 (rest
, list
);
1932 /* Look at all windows, performing an operation specified by TYPE
1934 If FRAMES is Qt, look at all frames;
1935 Qnil, look at just the selected frame;
1936 Qvisible, look at visible frames;
1937 a frame, just look at windows on that frame.
1938 If MINI is non-zero, perform the operation on minibuffer windows too. */
1943 GET_BUFFER_WINDOW
, /* Arg is buffer */
1944 GET_LRU_WINDOW
, /* Arg is t for full-width windows only */
1945 DELETE_OTHER_WINDOWS
, /* Arg is window not to delete */
1946 DELETE_BUFFER_WINDOWS
, /* Arg is buffer */
1948 UNSHOW_BUFFER
, /* Arg is buffer */
1949 REDISPLAY_BUFFER_WINDOWS
, /* Arg is buffer */
1954 window_loop (type
, obj
, mini
, frames
)
1955 enum window_loop type
;
1956 Lisp_Object obj
, frames
;
1959 Lisp_Object window
, windows
, best_window
, frame_arg
;
1961 struct gcpro gcpro1
;
1963 /* If we're only looping through windows on a particular frame,
1964 frame points to that frame. If we're looping through windows
1965 on all frames, frame is 0. */
1966 if (FRAMEP (frames
))
1967 f
= XFRAME (frames
);
1968 else if (NILP (frames
))
1969 f
= SELECTED_FRAME ();
1974 frame_arg
= Qlambda
;
1975 else if (EQ (frames
, make_number (0)))
1977 else if (EQ (frames
, Qvisible
))
1982 /* frame_arg is Qlambda to stick to one frame,
1983 Qvisible to consider all visible frames,
1986 /* Pick a window to start with. */
1990 window
= FRAME_SELECTED_WINDOW (f
);
1992 window
= FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
1994 windows
= window_list_1 (window
, mini
? Qt
: Qnil
, frame_arg
);
1998 for (; CONSP (windows
); windows
= XCDR (windows
))
2002 window
= XCAR (windows
);
2003 w
= XWINDOW (window
);
2005 /* Note that we do not pay attention here to whether the frame
2006 is visible, since Fwindow_list skips non-visible frames if
2007 that is desired, under the control of frame_arg. */
2008 if (!MINI_WINDOW_P (w
)
2009 /* For UNSHOW_BUFFER, we must always consider all windows. */
2010 || type
== UNSHOW_BUFFER
2011 || (mini
&& minibuf_level
> 0))
2014 case GET_BUFFER_WINDOW
:
2015 if (EQ (w
->buffer
, obj
)
2016 /* Don't find any minibuffer window
2017 except the one that is currently in use. */
2018 && (MINI_WINDOW_P (w
)
2019 ? EQ (window
, minibuf_window
)
2022 if (NILP (best_window
))
2023 best_window
= window
;
2024 else if (EQ (window
, selected_window
))
2025 /* For compatibility with 20.x, prefer to return
2027 best_window
= window
;
2031 case GET_LRU_WINDOW
:
2032 /* `obj' is an integer encoding a bitvector.
2033 `obj & 1' means consider only full-width windows.
2034 `obj & 2' means consider also dedicated windows. */
2035 if (((XINT (obj
) & 1) && !WINDOW_FULL_WIDTH_P (w
))
2036 || (!(XINT (obj
) & 2) && !NILP (w
->dedicated
))
2037 /* Minibuffer windows are always ignored. */
2038 || MINI_WINDOW_P (w
))
2040 if (NILP (best_window
)
2041 || (XFASTINT (XWINDOW (best_window
)->use_time
)
2042 > XFASTINT (w
->use_time
)))
2043 best_window
= window
;
2046 case DELETE_OTHER_WINDOWS
:
2047 if (!EQ (window
, obj
))
2048 Fdelete_window (window
);
2051 case DELETE_BUFFER_WINDOWS
:
2052 if (EQ (w
->buffer
, obj
))
2054 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
2056 /* If this window is dedicated, and in a frame of its own,
2058 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2059 && !NILP (w
->dedicated
)
2060 && other_visible_frames (f
))
2062 /* Skip the other windows on this frame.
2063 There might be one, the minibuffer! */
2064 while (CONSP (XCDR (windows
))
2065 && EQ (XWINDOW (XCAR (windows
))->frame
,
2066 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2067 windows
= XCDR (windows
);
2069 /* Now we can safely delete the frame. */
2070 Fdelete_frame (w
->frame
, Qnil
);
2072 else if (NILP (w
->parent
))
2074 /* If we're deleting the buffer displayed in the
2075 only window on the frame, find a new buffer to
2078 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2079 Fset_window_buffer (window
, buffer
, Qnil
);
2080 if (EQ (window
, selected_window
))
2081 Fset_buffer (w
->buffer
);
2084 Fdelete_window (window
);
2088 case GET_LARGEST_WINDOW
:
2089 { /* nil `obj' means to ignore dedicated windows. */
2090 /* Ignore dedicated windows and minibuffers. */
2091 if (MINI_WINDOW_P (w
) || (NILP (obj
) && !NILP (w
->dedicated
)))
2094 if (NILP (best_window
))
2095 best_window
= window
;
2098 struct window
*b
= XWINDOW (best_window
);
2099 if (XFASTINT (w
->total_lines
) * XFASTINT (w
->total_cols
)
2100 > XFASTINT (b
->total_lines
) * XFASTINT (b
->total_cols
))
2101 best_window
= window
;
2107 if (EQ (w
->buffer
, obj
))
2110 struct frame
*f
= XFRAME (w
->frame
);
2112 /* Find another buffer to show in this window. */
2113 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2115 /* If this window is dedicated, and in a frame of its own,
2117 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2118 && !NILP (w
->dedicated
)
2119 && other_visible_frames (f
))
2121 /* Skip the other windows on this frame.
2122 There might be one, the minibuffer! */
2123 while (CONSP (XCDR (windows
))
2124 && EQ (XWINDOW (XCAR (windows
))->frame
,
2125 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2126 windows
= XCDR (windows
);
2128 /* Now we can safely delete the frame. */
2129 Fdelete_frame (w
->frame
, Qnil
);
2131 else if (!NILP (w
->dedicated
) && !NILP (w
->parent
))
2134 XSETWINDOW (window
, w
);
2135 /* If this window is dedicated and not the only window
2136 in its frame, then kill it. */
2137 Fdelete_window (window
);
2141 /* Otherwise show a different buffer in the window. */
2142 w
->dedicated
= Qnil
;
2143 Fset_window_buffer (window
, buffer
, Qnil
);
2144 if (EQ (window
, selected_window
))
2145 Fset_buffer (w
->buffer
);
2150 case REDISPLAY_BUFFER_WINDOWS
:
2151 if (EQ (w
->buffer
, obj
))
2153 mark_window_display_accurate (window
, 0);
2154 w
->update_mode_line
= Qt
;
2155 XBUFFER (obj
)->prevent_redisplay_optimizations_p
= 1;
2156 ++update_mode_lines
;
2157 best_window
= window
;
2161 /* Check for a window that has a killed buffer. */
2162 case CHECK_ALL_WINDOWS
:
2163 if (! NILP (w
->buffer
)
2164 && NILP (XBUFFER (w
->buffer
)->name
))
2168 case WINDOW_LOOP_UNUSED
:
2177 /* Used for debugging. Abort if any window has a dead buffer. */
2180 check_all_windows ()
2182 window_loop (CHECK_ALL_WINDOWS
, Qnil
, 1, Qt
);
2185 DEFUN ("get-lru-window", Fget_lru_window
, Sget_lru_window
, 0, 2, 0,
2186 doc
: /* Return the window least recently selected or used for display.
2187 Return a full-width window if possible.
2188 A minibuffer window is never a candidate.
2189 A dedicated window is never a candidate, unless DEDICATED is non-nil,
2190 so if all windows are dedicated, the value is nil.
2191 If optional argument FRAME is `visible', search all visible frames.
2192 If FRAME is 0, search all visible and iconified frames.
2193 If FRAME is t, search all frames.
2194 If FRAME is nil, search only the selected frame.
2195 If FRAME is a frame, search only that frame. */)
2197 Lisp_Object frame
, dedicated
;
2199 register Lisp_Object w
;
2200 /* First try for a window that is full-width */
2201 w
= window_loop (GET_LRU_WINDOW
,
2202 NILP (dedicated
) ? make_number (1) : make_number (3),
2204 if (!NILP (w
) && !EQ (w
, selected_window
))
2206 /* If none of them, try the rest */
2207 return window_loop (GET_LRU_WINDOW
,
2208 NILP (dedicated
) ? make_number (0) : make_number (2),
2212 DEFUN ("get-largest-window", Fget_largest_window
, Sget_largest_window
, 0, 2, 0,
2213 doc
: /* Return the largest window in area.
2214 A minibuffer window is never a candidate.
2215 A dedicated window is never a candidate unless DEDICATED is non-nil,
2216 so if all windows are dedicated, the value is nil.
2217 If optional argument FRAME is `visible', search all visible frames.
2218 If FRAME is 0, search all visible and iconified frames.
2219 If FRAME is t, search all frames.
2220 If FRAME is nil, search only the selected frame.
2221 If FRAME is a frame, search only that frame. */)
2223 Lisp_Object frame
, dedicated
;
2225 return window_loop (GET_LARGEST_WINDOW
, dedicated
, 0,
2229 DEFUN ("get-buffer-window", Fget_buffer_window
, Sget_buffer_window
, 1, 2, 0,
2230 doc
: /* Return a window currently displaying BUFFER, or nil if none.
2231 BUFFER can be a buffer or a buffer name.
2232 If optional argument FRAME is `visible', search all visible frames.
2233 If optional argument FRAME is 0, search all visible and iconified frames.
2234 If FRAME is t, search all frames.
2235 If FRAME is nil, search only the selected frame.
2236 If FRAME is a frame, search only that frame. */)
2238 Lisp_Object buffer
, frame
;
2240 buffer
= Fget_buffer (buffer
);
2241 if (BUFFERP (buffer
))
2242 return window_loop (GET_BUFFER_WINDOW
, buffer
, 1, frame
);
2247 DEFUN ("delete-other-windows", Fdelete_other_windows
, Sdelete_other_windows
,
2249 doc
: /* Make WINDOW (or the selected window) fill its frame.
2250 Only the frame WINDOW is on is affected.
2251 This function tries to reduce display jumps
2252 by keeping the text previously visible in WINDOW
2253 in the same place on the frame. Doing this depends on
2254 the value of (window-start WINDOW), so if calling this function
2255 in a program gives strange scrolling, make sure the window-start
2256 value is reasonable when this function is called. */)
2265 window
= selected_window
;
2267 CHECK_LIVE_WINDOW (window
);
2268 w
= XWINDOW (window
);
2270 startpos
= marker_position (w
->start
);
2271 top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2273 if (MINI_WINDOW_P (w
) && top
> 0)
2274 error ("Can't expand minibuffer to full frame");
2276 window_loop (DELETE_OTHER_WINDOWS
, window
, 0, WINDOW_FRAME (w
));
2278 /* Try to minimize scrolling, by setting the window start to the point
2279 will cause the text at the old window start to be at the same place
2280 on the frame. But don't try to do this if the window start is
2281 outside the visible portion (as might happen when the display is
2282 not current, due to typeahead). */
2283 new_top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2285 && startpos
>= BUF_BEGV (XBUFFER (w
->buffer
))
2286 && startpos
<= BUF_ZV (XBUFFER (w
->buffer
)))
2288 struct position pos
;
2289 struct buffer
*obuf
= current_buffer
;
2291 Fset_buffer (w
->buffer
);
2292 /* This computation used to temporarily move point, but that can
2293 have unwanted side effects due to text properties. */
2294 pos
= *vmotion (startpos
, -top
, w
);
2296 set_marker_both (w
->start
, w
->buffer
, pos
.bufpos
, pos
.bytepos
);
2297 w
->window_end_valid
= Qnil
;
2298 w
->start_at_line_beg
= ((pos
.bytepos
== BEGV_BYTE
2299 || FETCH_BYTE (pos
.bytepos
- 1) == '\n') ? Qt
2301 /* We need to do this, so that the window-scroll-functions
2303 w
->optional_new_start
= Qt
;
2305 set_buffer_internal (obuf
);
2311 DEFUN ("delete-windows-on", Fdelete_windows_on
, Sdelete_windows_on
,
2312 1, 2, "bDelete windows on (buffer): ",
2313 doc
: /* Delete all windows showing BUFFER.
2314 BUFFER must be a buffer or the name of an existing buffer.
2315 Optional second argument FRAME controls which frames are affected.
2316 If optional argument FRAME is `visible', search all visible frames.
2317 If FRAME is 0, search all visible and iconified frames.
2318 If FRAME is nil, search all frames.
2319 If FRAME is t, search only the selected frame.
2320 If FRAME is a frame, search only that frame. */)
2322 Lisp_Object buffer
, frame
;
2324 /* FRAME uses t and nil to mean the opposite of what window_loop
2328 else if (EQ (frame
, Qt
))
2333 buffer
= Fget_buffer (buffer
);
2334 CHECK_BUFFER (buffer
);
2335 window_loop (DELETE_BUFFER_WINDOWS
, buffer
, 0, frame
);
2341 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows
,
2342 Sreplace_buffer_in_windows
,
2343 1, 1, "bReplace buffer in windows: ",
2344 doc
: /* Replace BUFFER with some other buffer in all windows showing it.
2345 BUFFER may be a buffer or the name of an existing buffer. */)
2351 buffer
= Fget_buffer (buffer
);
2352 CHECK_BUFFER (buffer
);
2353 window_loop (UNSHOW_BUFFER
, buffer
, 0, Qt
);
2358 /* Replace BUFFER with some other buffer in all windows
2359 of all frames, even those on other keyboards. */
2362 replace_buffer_in_all_windows (buffer
)
2366 Lisp_Object tail
, frame
;
2368 /* A single call to window_loop won't do the job
2369 because it only considers frames on the current keyboard.
2370 So loop manually over frames, and handle each one. */
2371 FOR_EACH_FRAME (tail
, frame
)
2372 window_loop (UNSHOW_BUFFER
, buffer
, 1, frame
);
2374 window_loop (UNSHOW_BUFFER
, buffer
, 1, Qt
);
2378 /* Set the height of WINDOW and all its inferiors. */
2380 /* The smallest acceptable dimensions for a window. Anything smaller
2381 might crash Emacs. */
2383 #define MIN_SAFE_WINDOW_WIDTH (2)
2384 #define MIN_SAFE_WINDOW_HEIGHT (1)
2386 /* Make sure that window_min_height and window_min_width are
2387 not too small; if they are, set them to safe minima. */
2390 check_min_window_sizes ()
2392 /* Smaller values might permit a crash. */
2393 if (window_min_width
< MIN_SAFE_WINDOW_WIDTH
)
2394 window_min_width
= MIN_SAFE_WINDOW_WIDTH
;
2395 if (window_min_height
< MIN_SAFE_WINDOW_HEIGHT
)
2396 window_min_height
= MIN_SAFE_WINDOW_HEIGHT
;
2399 /* If *ROWS or *COLS are too small a size for FRAME, set them to the
2400 minimum allowable size. */
2403 check_frame_size (frame
, rows
, cols
)
2407 /* For height, we have to see:
2408 how many windows the frame has at minimum (one or two),
2409 and whether it has a menu bar or other special stuff at the top. */
2411 = ((FRAME_MINIBUF_ONLY_P (frame
) || ! FRAME_HAS_MINIBUF_P (frame
))
2412 ? MIN_SAFE_WINDOW_HEIGHT
2413 : 2 * MIN_SAFE_WINDOW_HEIGHT
);
2415 if (FRAME_TOP_MARGIN (frame
) > 0)
2416 min_height
+= FRAME_TOP_MARGIN (frame
);
2418 if (*rows
< min_height
)
2420 if (*cols
< MIN_SAFE_WINDOW_WIDTH
)
2421 *cols
= MIN_SAFE_WINDOW_WIDTH
;
2425 /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means
2426 check if W's width can be changed, otherwise check W's height.
2427 CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's
2428 siblings, too. If none of the siblings is resizable, WINDOW isn't
2432 window_fixed_size_p (w
, width_p
, check_siblings_p
)
2434 int width_p
, check_siblings_p
;
2439 if (!NILP (w
->hchild
))
2441 c
= XWINDOW (w
->hchild
);
2445 /* A horiz. combination is fixed-width if all of if its
2447 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2448 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2449 fixed_p
= c
== NULL
;
2453 /* A horiz. combination is fixed-height if one of if its
2455 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2456 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2457 fixed_p
= c
!= NULL
;
2460 else if (!NILP (w
->vchild
))
2462 c
= XWINDOW (w
->vchild
);
2466 /* A vert. combination is fixed-width if one of if its
2468 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2469 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2470 fixed_p
= c
!= NULL
;
2474 /* A vert. combination is fixed-height if all of if its
2476 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2477 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2478 fixed_p
= c
== NULL
;
2481 else if (BUFFERP (w
->buffer
))
2483 struct buffer
*old
= current_buffer
;
2486 current_buffer
= XBUFFER (w
->buffer
);
2487 val
= find_symbol_value (Qwindow_size_fixed
);
2488 current_buffer
= old
;
2491 if (!EQ (val
, Qunbound
))
2493 fixed_p
= !NILP (val
);
2496 && ((EQ (val
, Qheight
) && width_p
)
2497 || (EQ (val
, Qwidth
) && !width_p
)))
2501 /* Can't tell if this one is resizable without looking at
2502 siblings. If all siblings are fixed-size this one is too. */
2503 if (!fixed_p
&& check_siblings_p
&& WINDOWP (w
->parent
))
2507 for (child
= w
->prev
; !NILP (child
); child
= XWINDOW (child
)->prev
)
2508 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2512 for (child
= w
->next
; !NILP (child
); child
= XWINDOW (child
)->next
)
2513 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2527 /* Return the minimum size of window W, not taking fixed-width windows
2528 into account. WIDTH_P non-zero means return the minimum width,
2529 otherwise return the minimum height. If W is a combination window,
2530 compute the minimum size from the minimum sizes of W's children. */
2533 window_min_size_1 (w
, width_p
)
2540 if (!NILP (w
->hchild
))
2542 c
= XWINDOW (w
->hchild
);
2547 /* The min width of a horizontal combination is
2548 the sum of the min widths of its children. */
2551 size
+= window_min_size_1 (c
, width_p
);
2552 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2557 /* The min height a horizontal combination equals
2558 the maximum of all min height of its children. */
2561 int min_size
= window_min_size_1 (c
, width_p
);
2562 size
= max (min_size
, size
);
2563 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2567 else if (!NILP (w
->vchild
))
2569 c
= XWINDOW (w
->vchild
);
2574 /* The min width of a vertical combination is
2575 the maximum of the min widths of its children. */
2578 int min_size
= window_min_size_1 (c
, width_p
);
2579 size
= max (min_size
, size
);
2580 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2585 /* The min height of a vertical combination equals
2586 the sum of the min height of its children. */
2589 size
+= window_min_size_1 (c
, width_p
);
2590 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2597 size
= max (window_min_width
,
2598 (MIN_SAFE_WINDOW_WIDTH
2599 + WINDOW_FRINGE_COLS (w
)
2600 + WINDOW_SCROLL_BAR_COLS (w
)));
2603 if (MINI_WINDOW_P (w
)
2604 || (!WINDOW_WANTS_MODELINE_P (w
)
2605 && !WINDOW_WANTS_HEADER_LINE_P (w
)))
2608 size
= window_min_height
;
2616 /* Return the minimum size of window W, taking fixed-size windows into
2617 account. WIDTH_P non-zero means return the minimum width,
2618 otherwise return the minimum height. IGNORE_FIXED_P non-zero means
2619 ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size
2620 unless FIXED is null. */
2623 window_min_size (w
, width_p
, ignore_fixed_p
, fixed
)
2625 int width_p
, ignore_fixed_p
, *fixed
;
2632 fixed_p
= window_fixed_size_p (w
, width_p
, 1);
2638 size
= width_p
? XFASTINT (w
->total_cols
) : XFASTINT (w
->total_lines
);
2640 size
= window_min_size_1 (w
, width_p
);
2646 /* Adjust the margins of window W if text area is too small.
2647 Return 1 if window width is ok after adjustment; 0 if window
2648 is still too narrow. */
2651 adjust_window_margins (w
)
2654 int box_cols
= (WINDOW_TOTAL_COLS (w
)
2655 - WINDOW_FRINGE_COLS (w
)
2656 - WINDOW_SCROLL_BAR_COLS (w
));
2657 int margin_cols
= (WINDOW_LEFT_MARGIN_COLS (w
)
2658 + WINDOW_RIGHT_MARGIN_COLS (w
));
2660 if (box_cols
- margin_cols
>= MIN_SAFE_WINDOW_WIDTH
)
2663 if (margin_cols
< 0 || box_cols
< MIN_SAFE_WINDOW_WIDTH
)
2666 /* Window's text area is too narrow, but reducing the window
2667 margins will fix that. */
2668 margin_cols
= box_cols
- MIN_SAFE_WINDOW_WIDTH
;
2669 if (WINDOW_RIGHT_MARGIN_COLS (w
) > 0)
2671 if (WINDOW_LEFT_MARGIN_COLS (w
) > 0)
2672 w
->left_margin_cols
= w
->right_margin_cols
2673 = make_number (margin_cols
/2);
2675 w
->right_margin_cols
= make_number (margin_cols
);
2678 w
->left_margin_cols
= make_number (margin_cols
);
2682 /* Calculate new sizes for windows in the list FORWARD when the window size
2683 goes from TOTAL to SIZE. TOTAL must be greater than SIZE.
2684 The number of windows in FORWARD is NCHILDREN, and the number that
2685 can shrink is SHRINKABLE.
2686 The minimum size a window can have is MIN_SIZE.
2687 If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero.
2688 If we are shrinking columns, WIDTH_P is non-zero, otherwise we are
2691 This function returns an allocated array of new sizes that the caller
2692 must free. The size -1 means the window is fixed and RESIZE_FIXED_P
2693 is zero. Array index 0 refers to the first window in FORWARD, 1 to
2694 the second, and so on.
2696 This function tries to keep windows at least at the minimum size
2697 and resize other windows before it resizes any window to zero (i.e.
2698 delete that window).
2700 Windows are resized proportional to their size, so bigger windows
2701 shrink more than smaller windows. */
2703 shrink_windows (total
, size
, nchildren
, shrinkable
,
2704 min_size
, resize_fixed_p
, forward
, width_p
)
2705 int total
, size
, nchildren
, shrinkable
, min_size
;
2706 int resize_fixed_p
, width_p
;
2707 Lisp_Object forward
;
2709 int available_resize
= 0;
2713 int smallest
= total
;
2714 int total_removed
= 0;
2715 int total_shrink
= total
- size
;
2718 new_sizes
= xmalloc (sizeof (*new_sizes
) * nchildren
);
2720 for (i
= 0, child
= forward
; !NILP (child
); child
= c
->next
, ++i
)
2724 c
= XWINDOW (child
);
2725 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2727 if (! resize_fixed_p
&& window_fixed_size_p (c
, width_p
, 0))
2731 new_sizes
[i
] = child_size
;
2732 if (child_size
> min_size
)
2733 available_resize
+= child_size
- min_size
;
2736 /* We might need to shrink some windows to zero. Find the smallest
2737 windows and set them to 0 until we can fulfil the new size. */
2739 while (shrinkable
> 1 && size
+ available_resize
< total
)
2741 for (i
= 0; i
< nchildren
; ++i
)
2742 if (new_sizes
[i
] > 0 && smallest
> new_sizes
[i
])
2743 smallest
= new_sizes
[i
];
2745 for (i
= 0; i
< nchildren
; ++i
)
2746 if (new_sizes
[i
] == smallest
)
2748 /* Resize this window down to zero. */
2750 if (smallest
> min_size
)
2751 available_resize
-= smallest
- min_size
;
2752 available_resize
+= smallest
;
2754 total_removed
+= smallest
;
2756 /* We don't know what the smallest is now. */
2759 /* Out of for, just remove one window at the time and
2760 check again if we have enough space. */
2765 /* Now, calculate the new sizes. Try to shrink each window
2766 proportional to its size. */
2767 for (i
= 0; i
< nchildren
; ++i
)
2769 if (new_sizes
[i
] > min_size
)
2771 int to_shrink
= total_shrink
*new_sizes
[i
]/total
;
2772 if (new_sizes
[i
] - to_shrink
< min_size
)
2773 to_shrink
= new_sizes
[i
] - min_size
;
2774 new_sizes
[i
] -= to_shrink
;
2775 total_removed
+= to_shrink
;
2779 /* Any reminder due to rounding, we just subtract from windows
2780 that are left and still can be shrunk. */
2781 while (total_shrink
> total_removed
)
2783 int nonzero_sizes
= 0;
2784 int nonzero_idx
= -1;
2786 for (i
= 0; i
< nchildren
; ++i
)
2787 if (new_sizes
[i
] > 0)
2793 for (i
= 0; i
< nchildren
; ++i
)
2794 if (new_sizes
[i
] > min_size
)
2799 /* Out of for, just shrink one window at the time and
2800 check again if we have enough space. */
2805 /* Special case, only one window left. */
2806 if (nonzero_sizes
== 1)
2810 /* Any surplus due to rounding, we add to windows that are left. */
2811 while (total_shrink
< total_removed
)
2813 for (i
= 0; i
< nchildren
; ++i
)
2815 if (new_sizes
[i
] != 0 && total_shrink
< total_removed
)
2827 /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
2828 WINDOW's width. Resize WINDOW's children, if any, so that they
2829 keep their proportionate size relative to WINDOW.
2831 If FIRST_ONLY is 1, change only the first of WINDOW's children when
2832 they are in series. If LAST_ONLY is 1, change only the last of
2833 WINDOW's children when they are in series.
2835 Propagate WINDOW's top or left edge position to children. Delete
2836 windows that become too small unless NODELETE_P is non-zero.
2838 If NODELETE_P is 2, that means we do delete windows that are
2839 too small, even if they were too small before! */
2842 size_window (window
, size
, width_p
, nodelete_p
, first_only
, last_only
)
2844 int size
, width_p
, nodelete_p
;
2845 int first_only
, last_only
;
2847 struct window
*w
= XWINDOW (window
);
2849 Lisp_Object child
, *forward
, *sideward
;
2850 int old_size
, min_size
, safe_min_size
;
2852 /* We test nodelete_p != 2 and nodelete_p != 1 below, so it
2853 seems like it's too soon to do this here. ++KFS. */
2854 if (nodelete_p
== 2)
2857 check_min_window_sizes ();
2858 size
= max (0, size
);
2860 /* If the window has been "too small" at one point,
2861 don't delete it for being "too small" in the future.
2862 Preserve it as long as that is at all possible. */
2865 old_size
= WINDOW_TOTAL_COLS (w
);
2866 min_size
= window_min_width
;
2867 /* Ensure that there is room for the scroll bar and fringes!
2868 We may reduce display margins though. */
2869 safe_min_size
= (MIN_SAFE_WINDOW_WIDTH
2870 + WINDOW_FRINGE_COLS (w
)
2871 + WINDOW_SCROLL_BAR_COLS (w
));
2875 old_size
= XINT (w
->total_lines
);
2876 min_size
= window_min_height
;
2877 safe_min_size
= MIN_SAFE_WINDOW_HEIGHT
;
2880 if (old_size
< min_size
&& nodelete_p
!= 2)
2881 w
->too_small_ok
= Qt
;
2883 /* Maybe delete WINDOW if it's too small. */
2884 if (nodelete_p
!= 1 && !NILP (w
->parent
))
2886 if (!MINI_WINDOW_P (w
) && !NILP (w
->too_small_ok
))
2887 min_size
= width_p
? MIN_SAFE_WINDOW_WIDTH
: MIN_SAFE_WINDOW_HEIGHT
;
2888 if (min_size
< safe_min_size
)
2889 min_size
= safe_min_size
;
2890 if (size
< min_size
)
2892 delete_window (window
);
2897 /* Set redisplay hints. */
2898 w
->last_modified
= make_number (0);
2899 w
->last_overlay_modified
= make_number (0);
2900 windows_or_buffers_changed
++;
2901 FRAME_WINDOW_SIZES_CHANGED (XFRAME (w
->frame
)) = 1;
2905 sideward
= &w
->vchild
;
2906 forward
= &w
->hchild
;
2907 w
->total_cols
= make_number (size
);
2908 adjust_window_margins (w
);
2912 sideward
= &w
->hchild
;
2913 forward
= &w
->vchild
;
2914 w
->total_lines
= make_number (size
);
2915 w
->orig_total_lines
= Qnil
;
2918 if (!NILP (*sideward
))
2920 /* We have a chain of parallel siblings whose size should all change. */
2921 for (child
= *sideward
; !NILP (child
); child
= c
->next
)
2923 c
= XWINDOW (child
);
2925 c
->left_col
= w
->left_col
;
2927 c
->top_line
= w
->top_line
;
2928 size_window (child
, size
, width_p
, nodelete_p
,
2929 first_only
, last_only
);
2932 else if (!NILP (*forward
) && last_only
)
2934 /* Change the last in a series of siblings. */
2935 Lisp_Object last_child
;
2938 for (child
= *forward
; !NILP (child
); child
= c
->next
)
2940 c
= XWINDOW (child
);
2944 child_size
= XINT (width_p
? c
->total_cols
: c
->total_lines
);
2945 size_window (last_child
,
2946 size
- old_size
+ child_size
,
2947 width_p
, nodelete_p
, first_only
, last_only
);
2949 else if (!NILP (*forward
) && first_only
)
2951 /* Change the first in a series of siblings. */
2955 c
= XWINDOW (child
);
2958 c
->left_col
= w
->left_col
;
2960 c
->top_line
= w
->top_line
;
2962 child_size
= XINT (width_p
? c
->total_cols
: c
->total_lines
);
2964 size
- old_size
+ child_size
,
2965 width_p
, nodelete_p
, first_only
, last_only
);
2967 else if (!NILP (*forward
))
2969 int fixed_size
, each
, extra
, n
;
2970 int resize_fixed_p
, nfixed
;
2971 int last_pos
, first_pos
, nchildren
, total
;
2972 int *new_sizes
= NULL
;
2974 /* Determine the fixed-size portion of this window, and the
2975 number of child windows. */
2976 fixed_size
= nchildren
= nfixed
= total
= 0;
2977 for (child
= *forward
; !NILP (child
); child
= c
->next
, ++nchildren
)
2981 c
= XWINDOW (child
);
2982 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2983 total
+= child_size
;
2985 if (window_fixed_size_p (c
, width_p
, 0))
2987 fixed_size
+= child_size
;
2992 /* If the new size is smaller than fixed_size, or if there
2993 aren't any resizable windows, allow resizing fixed-size
2995 resize_fixed_p
= nfixed
== nchildren
|| size
< fixed_size
;
2997 /* Compute how many lines/columns to add/remove to each child. The
2998 value of extra takes care of rounding errors. */
2999 n
= resize_fixed_p
? nchildren
: nchildren
- nfixed
;
3000 if (size
< total
&& n
> 1)
3001 new_sizes
= shrink_windows (total
, size
, nchildren
, n
, min_size
,
3002 resize_fixed_p
, *forward
, width_p
);
3005 each
= (size
- total
) / n
;
3006 extra
= (size
- total
) - n
* each
;
3009 /* Compute new children heights and edge positions. */
3010 first_pos
= width_p
? XINT (w
->left_col
) : XINT (w
->top_line
);
3011 last_pos
= first_pos
;
3012 for (n
= 0, child
= *forward
; !NILP (child
); child
= c
->next
, ++n
)
3014 int new_size
, old_size
;
3016 c
= XWINDOW (child
);
3017 old_size
= width_p
? XFASTINT (c
->total_cols
) : XFASTINT (c
->total_lines
);
3018 new_size
= old_size
;
3020 /* The top or left edge position of this child equals the
3021 bottom or right edge of its predecessor. */
3023 c
->left_col
= make_number (last_pos
);
3025 c
->top_line
= make_number (last_pos
);
3027 /* If this child can be resized, do it. */
3028 if (resize_fixed_p
|| !window_fixed_size_p (c
, width_p
, 0))
3030 new_size
= new_sizes
? new_sizes
[n
] : old_size
+ each
+ extra
;
3034 /* Set new height. Note that size_window also propagates
3035 edge positions to children, so it's not a no-op if we
3036 didn't change the child's size. */
3037 size_window (child
, new_size
, width_p
, 1, first_only
, last_only
);
3039 /* Remember the bottom/right edge position of this child; it
3040 will be used to set the top/left edge of the next child. */
3041 last_pos
+= new_size
;
3044 if (new_sizes
) xfree (new_sizes
);
3046 /* We should have covered the parent exactly with child windows. */
3047 xassert (size
== last_pos
- first_pos
);
3049 /* Now delete any children that became too small. */
3051 for (child
= *forward
; !NILP (child
); child
= c
->next
)
3054 c
= XWINDOW (child
);
3055 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
3056 size_window (child
, child_size
, width_p
, 2, first_only
, last_only
);
3061 /* Set WINDOW's height to HEIGHT, and recursively change the height of
3062 WINDOW's children. NODELETE non-zero means don't delete windows
3063 that become too small in the process. (The caller should check
3064 later and do so if appropriate.) */
3067 set_window_height (window
, height
, nodelete
)
3072 size_window (window
, height
, 0, nodelete
, 0, 0);
3076 /* Set WINDOW's width to WIDTH, and recursively change the width of
3077 WINDOW's children. NODELETE non-zero means don't delete windows
3078 that become too small in the process. (The caller should check
3079 later and do so if appropriate.) */
3082 set_window_width (window
, width
, nodelete
)
3087 size_window (window
, width
, 1, nodelete
, 0, 0);
3090 /* Change window heights in windows rooted in WINDOW by N lines. */
3093 change_window_heights (window
, n
)
3097 struct window
*w
= XWINDOW (window
);
3099 XSETFASTINT (w
->top_line
, XFASTINT (w
->top_line
) + n
);
3100 XSETFASTINT (w
->total_lines
, XFASTINT (w
->total_lines
) - n
);
3102 if (INTEGERP (w
->orig_top_line
))
3103 XSETFASTINT (w
->orig_top_line
, XFASTINT (w
->orig_top_line
) + n
);
3104 if (INTEGERP (w
->orig_total_lines
))
3105 XSETFASTINT (w
->orig_total_lines
, XFASTINT (w
->orig_total_lines
) - n
);
3107 /* Handle just the top child in a vertical split. */
3108 if (!NILP (w
->vchild
))
3109 change_window_heights (w
->vchild
, n
);
3111 /* Adjust all children in a horizontal split. */
3112 for (window
= w
->hchild
; !NILP (window
); window
= w
->next
)
3114 w
= XWINDOW (window
);
3115 change_window_heights (window
, n
);
3120 int window_select_count
;
3123 Fset_window_buffer_unwind (obuf
)
3130 EXFUN (Fset_window_fringes
, 4);
3131 EXFUN (Fset_window_scroll_bars
, 4);
3133 /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero
3134 means it's allowed to run hooks. See make_frame for a case where
3135 it's not allowed. KEEP_MARGINS_P non-zero means that the current
3136 margins, fringes, and scroll-bar settings of the window are not
3137 reset from the buffer's local settings. */
3140 set_window_buffer (window
, buffer
, run_hooks_p
, keep_margins_p
)
3141 Lisp_Object window
, buffer
;
3142 int run_hooks_p
, keep_margins_p
;
3144 struct window
*w
= XWINDOW (window
);
3145 struct buffer
*b
= XBUFFER (buffer
);
3146 int count
= SPECPDL_INDEX ();
3150 if (EQ (window
, selected_window
))
3151 b
->last_selected_window
= window
;
3153 /* Let redisplay errors through. */
3154 b
->display_error_modiff
= 0;
3156 /* Update time stamps of buffer display. */
3157 if (INTEGERP (b
->display_count
))
3158 XSETINT (b
->display_count
, XINT (b
->display_count
) + 1);
3159 b
->display_time
= Fcurrent_time ();
3161 XSETFASTINT (w
->window_end_pos
, 0);
3162 XSETFASTINT (w
->window_end_vpos
, 0);
3163 bzero (&w
->last_cursor
, sizeof w
->last_cursor
);
3164 w
->window_end_valid
= Qnil
;
3165 w
->hscroll
= w
->min_hscroll
= make_number (0);
3167 set_marker_both (w
->pointm
, buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
3168 set_marker_restricted (w
->start
,
3169 make_number (b
->last_window_start
),
3171 w
->start_at_line_beg
= Qnil
;
3172 w
->force_start
= Qnil
;
3173 XSETFASTINT (w
->last_modified
, 0);
3174 XSETFASTINT (w
->last_overlay_modified
, 0);
3175 windows_or_buffers_changed
++;
3177 /* We must select BUFFER for running the window-scroll-functions.
3178 If WINDOW is selected, switch permanently.
3179 Otherwise, switch but go back to the ambient buffer afterward. */
3180 if (EQ (window
, selected_window
))
3181 Fset_buffer (buffer
);
3182 /* We can't check ! NILP (Vwindow_scroll_functions) here
3183 because that might itself be a local variable. */
3184 else if (window_initialized
)
3186 record_unwind_protect (Fset_window_buffer_unwind
, Fcurrent_buffer ());
3187 Fset_buffer (buffer
);
3190 if (!keep_margins_p
)
3192 /* Set left and right marginal area width etc. from buffer. */
3194 /* This may call adjust_window_margins three times, so
3195 temporarily disable window margins. */
3196 Lisp_Object save_left
= w
->left_margin_cols
;
3197 Lisp_Object save_right
= w
->right_margin_cols
;
3199 w
->left_margin_cols
= w
->right_margin_cols
= Qnil
;
3201 Fset_window_fringes (window
,
3202 b
->left_fringe_width
, b
->right_fringe_width
,
3203 b
->fringes_outside_margins
);
3205 Fset_window_scroll_bars (window
,
3206 b
->scroll_bar_width
,
3207 b
->vertical_scroll_bar_type
, Qnil
);
3209 w
->left_margin_cols
= save_left
;
3210 w
->right_margin_cols
= save_right
;
3212 Fset_window_margins (window
,
3213 b
->left_margin_cols
, b
->right_margin_cols
);
3218 if (! NILP (Vwindow_scroll_functions
))
3219 run_hook_with_args_2 (Qwindow_scroll_functions
, window
,
3220 Fmarker_position (w
->start
));
3222 if (! NILP (Vwindow_configuration_change_hook
)
3223 && ! NILP (Vrun_hooks
))
3224 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3227 unbind_to (count
, Qnil
);
3231 DEFUN ("set-window-buffer", Fset_window_buffer
, Sset_window_buffer
, 2, 3, 0,
3232 doc
: /* Make WINDOW display BUFFER as its contents.
3233 BUFFER can be a buffer or the name of an existing buffer.
3234 Optional third arg KEEP-MARGINS non-nil means that WINDOW's current
3235 display margins, fringe widths, and scroll bar settings are maintained;
3236 the default is to reset these from BUFFER's local settings or the frame
3239 This function runs the hook `window-scroll-functions'. */)
3240 (window
, buffer
, keep_margins
)
3241 register Lisp_Object window
, buffer
, keep_margins
;
3243 register Lisp_Object tem
;
3244 register struct window
*w
= decode_window (window
);
3246 XSETWINDOW (window
, w
);
3247 buffer
= Fget_buffer (buffer
);
3248 CHECK_BUFFER (buffer
);
3250 if (NILP (XBUFFER (buffer
)->name
))
3251 error ("Attempt to display deleted buffer");
3255 error ("Window is deleted");
3256 else if (! EQ (tem
, Qt
)) /* w->buffer is t when the window
3257 is first being set up. */
3259 if (!NILP (w
->dedicated
) && !EQ (tem
, buffer
))
3260 error ("Window is dedicated to `%s'",
3261 SDATA (XBUFFER (tem
)->name
));
3266 set_window_buffer (window
, buffer
, 1, !NILP (keep_margins
));
3270 /* Note that selected_window can be nil
3271 when this is called from Fset_window_configuration. */
3273 DEFUN ("select-window", Fselect_window
, Sselect_window
, 1, 2, 0,
3274 doc
: /* Select WINDOW. Most editing will apply to WINDOW's buffer.
3275 If WINDOW is not already selected, make WINDOW's buffer current
3276 and make WINDOW the frame's selected window. Return WINDOW.
3277 Optional second arg NORECORD non-nil means
3278 do not put this buffer at the front of the list of recently selected ones.
3280 Note that the main editor command loop
3281 selects the buffer of the selected window before each command. */)
3283 register Lisp_Object window
, norecord
;
3285 register struct window
*w
;
3286 register struct window
*ow
;
3289 CHECK_LIVE_WINDOW (window
);
3291 w
= XWINDOW (window
);
3292 w
->frozen_window_start_p
= 0;
3294 ++window_select_count
;
3295 XSETFASTINT (w
->use_time
, window_select_count
);
3296 if (EQ (window
, selected_window
))
3299 /* Store the current buffer's actual point into the
3300 old selected window. It belongs to that window,
3301 and when the window is not selected, must be in the window. */
3302 if (!NILP (selected_window
))
3304 ow
= XWINDOW (selected_window
);
3305 if (! NILP (ow
->buffer
))
3306 set_marker_both (ow
->pointm
, ow
->buffer
,
3307 BUF_PT (XBUFFER (ow
->buffer
)),
3308 BUF_PT_BYTE (XBUFFER (ow
->buffer
)));
3311 selected_window
= window
;
3312 sf
= SELECTED_FRAME ();
3313 if (XFRAME (WINDOW_FRAME (w
)) != sf
)
3315 XFRAME (WINDOW_FRAME (w
))->selected_window
= window
;
3316 /* Use this rather than Fhandle_switch_frame
3317 so that FRAME_FOCUS_FRAME is moved appropriately as we
3318 move around in the state where a minibuffer in a separate
3320 Fselect_frame (WINDOW_FRAME (w
));
3323 sf
->selected_window
= window
;
3325 if (NILP (norecord
))
3326 record_buffer (w
->buffer
);
3327 Fset_buffer (w
->buffer
);
3329 XBUFFER (w
->buffer
)->last_selected_window
= window
;
3331 /* Go to the point recorded in the window.
3332 This is important when the buffer is in more
3333 than one window. It also matters when
3334 redisplay_window has altered point after scrolling,
3335 because it makes the change only in the window. */
3337 register int new_point
= marker_position (w
->pointm
);
3338 if (new_point
< BEGV
)
3340 else if (new_point
> ZV
)
3346 windows_or_buffers_changed
++;
3351 select_window_norecord (window
)
3354 return Fselect_window (window
, Qt
);
3357 /* Deiconify the frame containing the window WINDOW,
3358 unless it is the selected frame;
3361 The reason for the exception for the selected frame
3362 is that it seems better not to change the selected frames visibility
3363 merely because of displaying a different buffer in it.
3364 The deiconification is useful when a buffer gets shown in
3365 another frame that you were not using lately. */
3368 display_buffer_1 (window
)
3371 Lisp_Object frame
= XWINDOW (window
)->frame
;
3372 FRAME_PTR f
= XFRAME (frame
);
3374 FRAME_SAMPLE_VISIBILITY (f
);
3376 if (EQ (frame
, selected_frame
))
3377 ; /* Assume the selected frame is already visible enough. */
3378 else if (minibuf_level
> 0
3379 && MINI_WINDOW_P (XWINDOW (selected_window
))
3380 && WINDOW_LIVE_P (minibuf_selected_window
)
3381 && EQ (frame
, WINDOW_FRAME (XWINDOW (minibuf_selected_window
))))
3382 ; /* Assume the frame from which we invoked the minibuffer is visible. */
3385 if (FRAME_ICONIFIED_P (f
))
3386 Fmake_frame_visible (frame
);
3387 else if (FRAME_VISIBLE_P (f
))
3388 Fraise_frame (frame
);
3394 DEFUN ("special-display-p", Fspecial_display_p
, Sspecial_display_p
, 1, 1, 0,
3395 doc
: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame.
3396 If the value is t, `display-buffer' or `pop-to-buffer' would create a
3397 special frame for that buffer using the default frame parameters.
3399 If the value is a list, it is a list of frame parameters that would be used
3400 to make a frame for that buffer.
3401 The variables `special-display-buffer-names'
3402 and `special-display-regexps' control this. */)
3404 Lisp_Object buffer_name
;
3408 CHECK_STRING (buffer_name
);
3410 tem
= Fmember (buffer_name
, Vspecial_display_buffer_names
);
3414 tem
= Fassoc (buffer_name
, Vspecial_display_buffer_names
);
3418 for (tem
= Vspecial_display_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3420 Lisp_Object car
= XCAR (tem
);
3422 && fast_string_match (car
, buffer_name
) >= 0)
3424 else if (CONSP (car
)
3425 && STRINGP (XCAR (car
))
3426 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3432 DEFUN ("same-window-p", Fsame_window_p
, Ssame_window_p
, 1, 1, 0,
3433 doc
: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window.
3434 More precisely, if `display-buffer' or `pop-to-buffer' would display
3435 that buffer in the selected window rather than (as usual) in some other window.
3436 See `same-window-buffer-names' and `same-window-regexps'. */)
3438 Lisp_Object buffer_name
;
3442 CHECK_STRING (buffer_name
);
3444 tem
= Fmember (buffer_name
, Vsame_window_buffer_names
);
3448 tem
= Fassoc (buffer_name
, Vsame_window_buffer_names
);
3452 for (tem
= Vsame_window_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3454 Lisp_Object car
= XCAR (tem
);
3456 && fast_string_match (car
, buffer_name
) >= 0)
3458 else if (CONSP (car
)
3459 && STRINGP (XCAR (car
))
3460 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3466 /* Use B so the default is (other-buffer). */
3467 DEFUN ("display-buffer", Fdisplay_buffer
, Sdisplay_buffer
, 1, 3,
3468 "BDisplay buffer: \nP",
3469 doc
: /* Make BUFFER appear in some window but don't select it.
3470 BUFFER must be the name of an existing buffer, or, when called from Lisp,
3472 If BUFFER is shown already in some window, just use that one,
3473 unless the window is the selected window and the optional second
3474 argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).
3475 If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.
3476 Returns the window displaying BUFFER.
3477 If `display-buffer-reuse-frames' is non-nil, and another frame is currently
3478 displaying BUFFER, then simply raise that frame.
3480 The variables `special-display-buffer-names',
3481 `special-display-regexps', `same-window-buffer-names', and
3482 `same-window-regexps' customize how certain buffer names are handled.
3483 The latter two take effect only if NOT-THIS-WINDOW is nil.
3485 If optional argument FRAME is `visible', search all visible frames.
3486 If FRAME is 0, search all visible and iconified frames.
3487 If FRAME is t, search all frames.
3488 If FRAME is a frame, search only that frame.
3489 If FRAME is nil, search only the selected frame
3490 (actually the last nonminibuffer frame),
3491 unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,
3492 which means search visible and iconified frames.
3494 If a full-width window on a splittable frame is available to display
3495 the buffer, it may be split, subject to the value of the variable
3496 `split-height-threshold'.
3498 If `even-window-heights' is non-nil, window heights will be evened out
3499 if displaying the buffer causes two vertically adjacent windows to be
3501 (buffer
, not_this_window
, frame
)
3502 register Lisp_Object buffer
, not_this_window
, frame
;
3504 register Lisp_Object window
, tem
, swp
;
3508 buffer
= Fget_buffer (buffer
);
3509 CHECK_BUFFER (buffer
);
3511 if (!NILP (Vdisplay_buffer_function
))
3512 return call2 (Vdisplay_buffer_function
, buffer
, not_this_window
);
3514 if (NILP (not_this_window
)
3515 && XBUFFER (XWINDOW (selected_window
)->buffer
) == XBUFFER (buffer
))
3516 return display_buffer_1 (selected_window
);
3518 /* See if the user has specified this buffer should appear
3519 in the selected window. */
3520 if (NILP (not_this_window
))
3522 swp
= Fsame_window_p (XBUFFER (buffer
)->name
);
3523 if (!NILP (swp
) && !no_switch_window (selected_window
))
3525 Fswitch_to_buffer (buffer
, Qnil
);
3526 return display_buffer_1 (selected_window
);
3530 /* If the user wants pop-up-frames or display-buffer-reuse-frames,
3531 look for a window showing BUFFER on any visible or iconified frame.
3532 Otherwise search only the current frame. */
3535 else if (pop_up_frames
3536 || display_buffer_reuse_frames
3537 || last_nonminibuf_frame
== 0)
3538 XSETFASTINT (tem
, 0);
3540 XSETFRAME (tem
, last_nonminibuf_frame
);
3542 window
= Fget_buffer_window (buffer
, tem
);
3544 && (NILP (not_this_window
) || !EQ (window
, selected_window
)))
3545 return display_buffer_1 (window
);
3547 /* Certain buffer names get special handling. */
3548 if (!NILP (Vspecial_display_function
) && NILP (swp
))
3550 tem
= Fspecial_display_p (XBUFFER (buffer
)->name
);
3552 return call1 (Vspecial_display_function
, buffer
);
3554 return call2 (Vspecial_display_function
, buffer
, tem
);
3557 /* If there are no frames open that have more than a minibuffer,
3558 we need to create a new frame. */
3559 if (pop_up_frames
|| last_nonminibuf_frame
== 0)
3561 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3562 Fset_window_buffer (window
, buffer
, Qnil
);
3563 return display_buffer_1 (window
);
3566 f
= SELECTED_FRAME ();
3568 || FRAME_MINIBUF_ONLY_P (f
)
3569 /* If the current frame is a special display frame,
3570 don't try to reuse its windows. */
3571 || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f
))->dedicated
))
3576 if (FRAME_MINIBUF_ONLY_P (f
))
3577 XSETFRAME (frames
, last_nonminibuf_frame
);
3578 /* Don't try to create a window if we would get an error. */
3579 if (split_height_threshold
< window_min_height
<< 1)
3580 split_height_threshold
= window_min_height
<< 1;
3582 /* Note that both Fget_largest_window and Fget_lru_window
3583 ignore minibuffers and dedicated windows.
3584 This means they can return nil. */
3586 /* If the frame we would try to split cannot be split,
3587 try other frames. */
3588 if (FRAME_NO_SPLIT_P (NILP (frames
) ? f
: last_nonminibuf_frame
))
3590 /* Try visible frames first. */
3591 window
= Fget_largest_window (Qvisible
, Qt
);
3592 /* If that didn't work, try iconified frames. */
3594 window
= Fget_largest_window (make_number (0), Qt
);
3595 #if 0 /* Don't try windows on other displays. */
3597 window
= Fget_largest_window (Qt
, Qt
);
3601 window
= Fget_largest_window (frames
, Qt
);
3603 /* If we got a tall enough full-width window that can be split,
3606 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3607 && window_height (window
) >= split_height_threshold
3608 && WINDOW_FULL_WIDTH_P (XWINDOW (window
)))
3609 window
= Fsplit_window (window
, Qnil
, Qnil
);
3612 Lisp_Object upper
, other
;
3614 window
= Fget_lru_window (frames
, Qt
);
3615 /* If the LRU window is selected, and big enough,
3616 and can be split, split it. */
3618 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3619 && (EQ (window
, selected_window
)
3620 || EQ (XWINDOW (window
)->parent
, Qnil
))
3621 && window_height (window
) >= window_min_height
<< 1)
3622 window
= Fsplit_window (window
, Qnil
, Qnil
);
3624 window
= Fget_lru_window (frames
, Qnil
);
3625 /* If Fget_lru_window returned nil, try other approaches. */
3627 /* Try visible frames first. */
3629 window
= Fget_buffer_window (buffer
, Qvisible
);
3631 window
= Fget_largest_window (Qvisible
, Qnil
);
3632 /* If that didn't work, try iconified frames. */
3634 window
= Fget_buffer_window (buffer
, make_number (0));
3636 window
= Fget_largest_window (make_number (0), Qnil
);
3638 #if 0 /* Don't try frames on other displays. */
3640 window
= Fget_buffer_window (buffer
, Qt
);
3642 window
= Fget_largest_window (Qt
, Qnil
);
3644 /* As a last resort, make a new frame. */
3646 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3647 /* If window appears above or below another,
3648 even out their heights. */
3649 other
= upper
= Qnil
;
3650 if (!NILP (XWINDOW (window
)->prev
))
3651 other
= upper
= XWINDOW (window
)->prev
;
3652 if (!NILP (XWINDOW (window
)->next
))
3653 other
= XWINDOW (window
)->next
, upper
= window
;
3655 && !NILP (Veven_window_heights
)
3656 /* Check that OTHER and WINDOW are vertically arrayed. */
3657 && !EQ (XWINDOW (other
)->top_line
, XWINDOW (window
)->top_line
)
3658 && (XFASTINT (XWINDOW (other
)->total_lines
)
3659 > XFASTINT (XWINDOW (window
)->total_lines
)))
3661 int total
= (XFASTINT (XWINDOW (other
)->total_lines
)
3662 + XFASTINT (XWINDOW (window
)->total_lines
));
3663 enlarge_window (upper
,
3664 total
/ 2 - XFASTINT (XWINDOW (upper
)->total_lines
),
3670 window
= Fget_lru_window (Qnil
, Qnil
);
3672 Fset_window_buffer (window
, buffer
, Qnil
);
3673 return display_buffer_1 (window
);
3677 DEFUN ("force-window-update", Fforce_window_update
, Sforce_window_update
,
3679 doc
: /* Force all windows to be updated on next redisplay.
3680 If optional arg OBJECT is a window, force redisplay of that window only.
3681 If OBJECT is a buffer or buffer name, force redisplay of all windows
3682 displaying that buffer. */)
3688 windows_or_buffers_changed
++;
3689 update_mode_lines
++;
3693 if (WINDOWP (object
))
3695 struct window
*w
= XWINDOW (object
);
3696 mark_window_display_accurate (object
, 0);
3697 w
->update_mode_line
= Qt
;
3698 if (BUFFERP (w
->buffer
))
3699 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
3700 ++update_mode_lines
;
3704 if (STRINGP (object
))
3705 object
= Fget_buffer (object
);
3706 if (BUFFERP (object
) && !NILP (XBUFFER (object
)->name
))
3708 /* Walk all windows looking for buffer, and force update
3709 of each of those windows. */
3711 object
= window_loop (REDISPLAY_BUFFER_WINDOWS
, object
, 0, Qvisible
);
3712 return NILP (object
) ? Qnil
: Qt
;
3715 /* If nothing suitable was found, just return.
3716 We could signal an error, but this feature will typically be used
3717 asynchronously in timers or process sentinels, so we don't. */
3723 temp_output_buffer_show (buf
)
3724 register Lisp_Object buf
;
3726 register struct buffer
*old
= current_buffer
;
3727 register Lisp_Object window
;
3728 register struct window
*w
;
3730 XBUFFER (buf
)->directory
= current_buffer
->directory
;
3733 BUF_SAVE_MODIFF (XBUFFER (buf
)) = MODIFF
;
3737 #if 0 /* rms: there should be no reason for this. */
3738 XBUFFER (buf
)->prevent_redisplay_optimizations_p
= 1;
3740 set_buffer_internal (old
);
3742 if (!NILP (Vtemp_buffer_show_function
))
3743 call1 (Vtemp_buffer_show_function
, buf
);
3746 window
= Fdisplay_buffer (buf
, Qnil
, Qnil
);
3748 if (!EQ (XWINDOW (window
)->frame
, selected_frame
))
3749 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window
)));
3750 Vminibuf_scroll_window
= window
;
3751 w
= XWINDOW (window
);
3752 XSETFASTINT (w
->hscroll
, 0);
3753 XSETFASTINT (w
->min_hscroll
, 0);
3754 set_marker_restricted_both (w
->start
, buf
, BEG
, BEG
);
3755 set_marker_restricted_both (w
->pointm
, buf
, BEG
, BEG
);
3757 /* Run temp-buffer-show-hook, with the chosen window selected
3758 and its buffer current. */
3760 if (!NILP (Vrun_hooks
)
3761 && !NILP (Fboundp (Qtemp_buffer_show_hook
))
3762 && !NILP (Fsymbol_value (Qtemp_buffer_show_hook
)))
3764 int count
= SPECPDL_INDEX ();
3765 Lisp_Object prev_window
, prev_buffer
;
3766 prev_window
= selected_window
;
3767 XSETBUFFER (prev_buffer
, old
);
3769 /* Select the window that was chosen, for running the hook.
3770 Note: Both Fselect_window and select_window_norecord may
3771 set-buffer to the buffer displayed in the window,
3772 so we need to save the current buffer. --stef */
3773 record_unwind_protect (Fset_buffer
, prev_buffer
);
3774 record_unwind_protect (select_window_norecord
, prev_window
);
3775 Fselect_window (window
, Qt
);
3776 Fset_buffer (w
->buffer
);
3777 call1 (Vrun_hooks
, Qtemp_buffer_show_hook
);
3778 unbind_to (count
, Qnil
);
3784 make_dummy_parent (window
)
3788 register struct window
*o
, *p
;
3791 o
= XWINDOW (window
);
3792 p
= allocate_window ();
3793 for (i
= 0; i
< VECSIZE (struct window
); ++i
)
3794 ((struct Lisp_Vector
*) p
)->contents
[i
]
3795 = ((struct Lisp_Vector
*)o
)->contents
[i
];
3796 XSETWINDOW (new, p
);
3799 XSETFASTINT (p
->sequence_number
, sequence_number
);
3801 /* Put new into window structure in place of window */
3802 replace_window (window
, new);
3815 DEFUN ("split-window", Fsplit_window
, Ssplit_window
, 0, 3, "",
3816 doc
: /* Split WINDOW, putting SIZE lines in the first of the pair.
3817 WINDOW defaults to selected one and SIZE to half its size.
3818 If optional third arg HORFLAG is non-nil, split side by side
3819 and put SIZE columns in the first of the pair. In that case,
3820 SIZE includes that window's scroll bar, or the divider column to its right.
3821 Interactively, all arguments are nil.
3823 Returns the newly created window (which is the lower or rightmost one).
3824 The upper or leftmost window is the original one, and remains selected
3825 if it was selected before.
3827 See Info node `(elisp)Splitting Windows' for more details and examples.*/)
3828 (window
, size
, horflag
)
3829 Lisp_Object window
, size
, horflag
;
3831 register Lisp_Object
new;
3832 register struct window
*o
, *p
;
3834 register int size_int
;
3837 window
= selected_window
;
3839 CHECK_LIVE_WINDOW (window
);
3841 o
= XWINDOW (window
);
3842 fo
= XFRAME (WINDOW_FRAME (o
));
3846 if (!NILP (horflag
))
3847 /* Calculate the size of the left-hand window, by dividing
3848 the usable space in columns by two.
3849 We round up, since the left-hand window may include
3850 a dividing line, while the right-hand may not. */
3851 size_int
= (XFASTINT (o
->total_cols
) + 1) >> 1;
3853 size_int
= XFASTINT (o
->total_lines
) >> 1;
3857 CHECK_NUMBER (size
);
3858 size_int
= XINT (size
);
3861 if (MINI_WINDOW_P (o
))
3862 error ("Attempt to split minibuffer window");
3863 else if (window_fixed_size_p (o
, !NILP (horflag
), 0))
3864 error ("Attempt to split fixed-size window");
3866 check_min_window_sizes ();
3870 if (size_int
< window_min_height
)
3871 error ("Window height %d too small (after splitting)", size_int
);
3872 if (size_int
+ window_min_height
> XFASTINT (o
->total_lines
))
3873 error ("Window height %d too small (after splitting)",
3874 XFASTINT (o
->total_lines
) - size_int
);
3875 if (NILP (o
->parent
)
3876 || NILP (XWINDOW (o
->parent
)->vchild
))
3878 make_dummy_parent (window
);
3880 XWINDOW (new)->vchild
= window
;
3885 if (size_int
< window_min_width
)
3886 error ("Window width %d too small (after splitting)", size_int
);
3888 if (size_int
+ window_min_width
> XFASTINT (o
->total_cols
))
3889 error ("Window width %d too small (after splitting)",
3890 XFASTINT (o
->total_cols
) - size_int
);
3891 if (NILP (o
->parent
)
3892 || NILP (XWINDOW (o
->parent
)->hchild
))
3894 make_dummy_parent (window
);
3896 XWINDOW (new)->hchild
= window
;
3900 /* Now we know that window's parent is a vertical combination
3901 if we are dividing vertically, or a horizontal combination
3902 if we are making side-by-side windows */
3904 windows_or_buffers_changed
++;
3905 FRAME_WINDOW_SIZES_CHANGED (fo
) = 1;
3906 new = make_window ();
3909 p
->frame
= o
->frame
;
3911 if (!NILP (p
->next
))
3912 XWINDOW (p
->next
)->prev
= new;
3915 p
->parent
= o
->parent
;
3917 p
->window_end_valid
= Qnil
;
3918 bzero (&p
->last_cursor
, sizeof p
->last_cursor
);
3920 /* Duplicate special geometry settings. */
3922 p
->left_margin_cols
= o
->left_margin_cols
;
3923 p
->right_margin_cols
= o
->right_margin_cols
;
3924 p
->left_fringe_width
= o
->left_fringe_width
;
3925 p
->right_fringe_width
= o
->right_fringe_width
;
3926 p
->fringes_outside_margins
= o
->fringes_outside_margins
;
3927 p
->scroll_bar_width
= o
->scroll_bar_width
;
3928 p
->vertical_scroll_bar_type
= o
->vertical_scroll_bar_type
;
3930 /* Apportion the available frame space among the two new windows */
3932 if (!NILP (horflag
))
3934 p
->total_lines
= o
->total_lines
;
3935 p
->top_line
= o
->top_line
;
3936 XSETFASTINT (p
->total_cols
, XFASTINT (o
->total_cols
) - size_int
);
3937 XSETFASTINT (o
->total_cols
, size_int
);
3938 XSETFASTINT (p
->left_col
, XFASTINT (o
->left_col
) + size_int
);
3939 adjust_window_margins (p
);
3940 adjust_window_margins (o
);
3944 p
->left_col
= o
->left_col
;
3945 p
->total_cols
= o
->total_cols
;
3946 XSETFASTINT (p
->total_lines
, XFASTINT (o
->total_lines
) - size_int
);
3947 XSETFASTINT (o
->total_lines
, size_int
);
3948 XSETFASTINT (p
->top_line
, XFASTINT (o
->top_line
) + size_int
);
3951 /* Adjust glyph matrices. */
3954 Fset_window_buffer (new, o
->buffer
, Qt
);
3958 DEFUN ("enlarge-window", Fenlarge_window
, Senlarge_window
, 1, 2, "p",
3959 doc
: /* Make current window ARG lines bigger.
3960 From program, optional second arg non-nil means grow sideways ARG columns.
3961 Interactively, if an argument is not given, make the window one line bigger.
3962 If HORIZONTAL is non-nil, enlarge horizontally instead of vertically.
3963 This function can delete windows, even the second window, if they get
3966 Lisp_Object arg
, horizontal
;
3969 enlarge_window (selected_window
, XINT (arg
), !NILP (horizontal
));
3971 if (! NILP (Vwindow_configuration_change_hook
))
3972 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3977 DEFUN ("shrink-window", Fshrink_window
, Sshrink_window
, 1, 2, "p",
3978 doc
: /* Make current window ARG lines smaller.
3979 From program, optional second arg non-nil means shrink sideways arg columns.
3980 Interactively, if an argument is not given, make the window one line smaller. Only
3981 siblings to the right or below are changed. */)
3983 Lisp_Object arg
, side
;
3986 enlarge_window (selected_window
, -XINT (arg
), !NILP (side
));
3988 if (! NILP (Vwindow_configuration_change_hook
))
3989 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3995 window_height (window
)
3998 register struct window
*p
= XWINDOW (window
);
3999 return WINDOW_TOTAL_LINES (p
);
4003 window_width (window
)
4006 register struct window
*p
= XWINDOW (window
);
4007 return WINDOW_TOTAL_COLS (p
);
4012 *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line))
4014 #define CURSIZE(w) \
4015 *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines))
4018 /* Enlarge WINDOW by DELTA.
4019 HORIZ_FLAG nonzero means enlarge it horizontally;
4020 zero means do it vertically.
4022 Siblings of the selected window are resized to fulfill the size
4023 request. If they become too small in the process, they will be
4027 enlarge_window (window
, delta
, horiz_flag
)
4029 int delta
, horiz_flag
;
4031 Lisp_Object parent
, next
, prev
;
4035 int (*sizefun
) P_ ((Lisp_Object
))
4036 = horiz_flag
? window_width
: window_height
;
4037 void (*setsizefun
) P_ ((Lisp_Object
, int, int))
4038 = (horiz_flag
? set_window_width
: set_window_height
);
4040 /* Check values of window_min_width and window_min_height for
4042 check_min_window_sizes ();
4044 /* Give up if this window cannot be resized. */
4045 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4046 error ("Window is not resizable");
4048 /* Find the parent of the selected window. */
4051 p
= XWINDOW (window
);
4057 error ("No other window to side of this one");
4062 ? !NILP (XWINDOW (parent
)->hchild
)
4063 : !NILP (XWINDOW (parent
)->vchild
))
4069 sizep
= &CURSIZE (window
);
4072 register int maxdelta
;
4074 /* Compute the maximum size increment this window can have. */
4076 maxdelta
= (!NILP (parent
) ? (*sizefun
) (parent
) - XINT (*sizep
)
4077 /* This is a main window followed by a minibuffer. */
4078 : !NILP (p
->next
) ? ((*sizefun
) (p
->next
)
4079 - window_min_size (XWINDOW (p
->next
),
4081 /* This is a minibuffer following a main window. */
4082 : !NILP (p
->prev
) ? ((*sizefun
) (p
->prev
)
4083 - window_min_size (XWINDOW (p
->prev
),
4085 /* This is a frame with only one window, a minibuffer-only
4086 or a minibufferless frame. */
4089 if (delta
> maxdelta
)
4090 /* This case traps trying to make the minibuffer
4091 the full frame, or make the only window aside from the
4092 minibuffer the full frame. */
4096 if (XINT (*sizep
) + delta
< window_min_size (XWINDOW (window
), horiz_flag
, 0, 0))
4098 delete_window (window
);
4105 /* Find the total we can get from other siblings without deleting them. */
4107 for (next
= p
->next
; ! NILP (next
); next
= XWINDOW (next
)->next
)
4108 maximum
+= (*sizefun
) (next
) - window_min_size (XWINDOW (next
),
4110 for (prev
= p
->prev
; ! NILP (prev
); prev
= XWINDOW (prev
)->prev
)
4111 maximum
+= (*sizefun
) (prev
) - window_min_size (XWINDOW (prev
),
4114 /* If we can get it all from them without deleting them, do so. */
4115 if (delta
<= maximum
)
4117 Lisp_Object first_unaffected
;
4118 Lisp_Object first_affected
;
4123 first_affected
= window
;
4124 /* Look at one sibling at a time,
4125 moving away from this window in both directions alternately,
4126 and take as much as we can get without deleting that sibling. */
4128 && (!NILP (next
) || !NILP (prev
)))
4132 int this_one
= ((*sizefun
) (next
)
4133 - window_min_size (XWINDOW (next
),
4134 horiz_flag
, 0, &fixed_p
));
4137 if (this_one
> delta
)
4140 (*setsizefun
) (next
, (*sizefun
) (next
) - this_one
, 0);
4141 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4146 next
= XWINDOW (next
)->next
;
4154 int this_one
= ((*sizefun
) (prev
)
4155 - window_min_size (XWINDOW (prev
),
4156 horiz_flag
, 0, &fixed_p
));
4159 if (this_one
> delta
)
4162 first_affected
= prev
;
4164 (*setsizefun
) (prev
, (*sizefun
) (prev
) - this_one
, 0);
4165 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4170 prev
= XWINDOW (prev
)->prev
;
4174 xassert (delta
== 0);
4176 /* Now recalculate the edge positions of all the windows affected,
4177 based on the new sizes. */
4178 first_unaffected
= next
;
4179 prev
= first_affected
;
4180 for (next
= XWINDOW (prev
)->next
; ! EQ (next
, first_unaffected
);
4181 prev
= next
, next
= XWINDOW (next
)->next
)
4183 XSETINT (CURBEG (next
), XINT (CURBEG (prev
)) + (*sizefun
) (prev
));
4184 /* This does not change size of NEXT,
4185 but it propagates the new top edge to its children */
4186 (*setsizefun
) (next
, (*sizefun
) (next
), 0);
4191 register int delta1
;
4192 register int opht
= (*sizefun
) (parent
);
4194 if (opht
<= XINT (*sizep
) + delta
)
4196 /* If trying to grow this window to or beyond size of the parent,
4197 just delete all the sibling windows. */
4198 Lisp_Object start
, tem
, next
;
4200 start
= XWINDOW (parent
)->vchild
;
4202 start
= XWINDOW (parent
)->hchild
;
4204 /* Delete any siblings that come after WINDOW. */
4205 tem
= XWINDOW (window
)->next
;
4206 while (! NILP (tem
))
4208 next
= XWINDOW (tem
)->next
;
4209 delete_window (tem
);
4213 /* Delete any siblings that come after WINDOW.
4214 Note that if START is not WINDOW, then WINDOW still
4215 Fhas siblings, so WINDOW has not yet replaced its parent. */
4217 while (! EQ (tem
, window
))
4219 next
= XWINDOW (tem
)->next
;
4220 delete_window (tem
);
4226 /* Otherwise, make delta1 just right so that if we add
4227 delta1 lines to this window and to the parent, and then
4228 shrink the parent back to its original size, the new
4229 proportional size of this window will increase by delta.
4231 The function size_window will compute the new height h'
4232 of the window from delta1 as:
4235 x = delta1 - delta1/n * n for the 1st resizable child
4238 where n is the number of children that can be resized.
4239 We can ignore x by choosing a delta1 that is a multiple of
4240 n. We want the height of this window to come out as
4250 The number of children n equals the number of resizable
4251 children of this window + 1 because we know window itself
4252 is resizable (otherwise we would have signalled an error). */
4254 struct window
*w
= XWINDOW (window
);
4258 for (s
= w
->next
; !NILP (s
); s
= XWINDOW (s
)->next
)
4259 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4261 for (s
= w
->prev
; !NILP (s
); s
= XWINDOW (s
)->prev
)
4262 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4267 /* Add delta1 lines or columns to this window, and to the parent,
4268 keeping things consistent while not affecting siblings. */
4269 XSETINT (CURSIZE (parent
), opht
+ delta1
);
4270 (*setsizefun
) (window
, XINT (*sizep
) + delta1
, 0);
4272 /* Squeeze out delta1 lines or columns from our parent,
4273 shriking this window and siblings proportionately.
4274 This brings parent back to correct size.
4275 Delta1 was calculated so this makes this window the desired size,
4276 taking it all out of the siblings. */
4277 (*setsizefun
) (parent
, opht
, 0);
4282 XSETFASTINT (p
->last_modified
, 0);
4283 XSETFASTINT (p
->last_overlay_modified
, 0);
4285 /* Adjust glyph matrices. */
4286 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4290 /* Adjust the size of WINDOW by DELTA, moving only its trailing edge.
4291 HORIZ_FLAG nonzero means adjust the width, moving the right edge.
4292 zero means adjust the height, moving the bottom edge.
4294 Following siblings of the selected window are resized to fulfill
4295 the size request. If they become too small in the process, they
4296 are not deleted; instead, we signal an error. */
4299 adjust_window_trailing_edge (window
, delta
, horiz_flag
)
4301 int delta
, horiz_flag
;
4303 Lisp_Object parent
, child
;
4305 Lisp_Object old_config
= Fcurrent_window_configuration (Qnil
);
4306 int delcount
= window_deletion_count
;
4308 /* Check values of window_min_width and window_min_height for
4310 check_min_window_sizes ();
4313 window
= Fselected_window ();
4315 CHECK_WINDOW (window
);
4317 /* Give up if this window cannot be resized. */
4318 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4319 error ("Window is not resizable");
4323 Lisp_Object first_parallel
= Qnil
;
4327 /* This happens if WINDOW on the previous iteration was
4328 at top level of the window tree. */
4329 Fset_window_configuration (old_config
);
4330 error ("Specified window edge is fixed");
4333 p
= XWINDOW (window
);
4336 /* See if this level has windows in parallel in the specified
4337 direction. If so, set FIRST_PARALLEL to the first one. */
4340 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->vchild
))
4341 first_parallel
= XWINDOW (parent
)->vchild
;
4342 else if (NILP (parent
) && !NILP (p
->next
))
4344 /* Handle the vertical chain of main window and minibuffer
4345 which has no parent. */
4346 first_parallel
= window
;
4347 while (! NILP (XWINDOW (first_parallel
)->prev
))
4348 first_parallel
= XWINDOW (first_parallel
)->prev
;
4353 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->hchild
))
4354 first_parallel
= XWINDOW (parent
)->hchild
;
4357 /* If this level's succession is in the desired dimension,
4358 and this window is the last one, and there is no higher level,
4359 its trailing edge is fixed. */
4360 if (NILP (XWINDOW (window
)->next
) && NILP (first_parallel
)
4363 Fset_window_configuration (old_config
);
4364 error ("Specified window edge is fixed");
4367 /* Don't make this window too small. */
4368 if (XINT (CURSIZE (window
)) + delta
4369 < (horiz_flag
? window_min_width
: window_min_height
))
4371 Fset_window_configuration (old_config
);
4372 error ("Cannot adjust window size as specified");
4375 /* Clear out some redisplay caches. */
4376 XSETFASTINT (p
->last_modified
, 0);
4377 XSETFASTINT (p
->last_overlay_modified
, 0);
4379 /* Adjust this window's edge. */
4380 XSETINT (CURSIZE (window
),
4381 XINT (CURSIZE (window
)) + delta
);
4383 /* If this window has following siblings in the desired dimension,
4384 make them smaller, and exit the loop.
4386 (If we reach the top of the tree and can never do this,
4387 we will fail and report an error, above.) */
4388 if (NILP (first_parallel
))
4390 if (!NILP (p
->next
))
4392 /* This may happen for the minibuffer. In that case
4393 the window_deletion_count check below does not work. */
4394 if (XINT (CURSIZE (p
->next
)) - delta
<= 0)
4396 Fset_window_configuration (old_config
);
4397 error ("Cannot adjust window size as specified");
4400 XSETINT (CURBEG (p
->next
),
4401 XINT (CURBEG (p
->next
)) + delta
);
4402 size_window (p
->next
, XINT (CURSIZE (p
->next
)) - delta
,
4403 horiz_flag
, 0, 1, 0);
4408 /* Here we have a chain of parallel siblings, in the other dimension.
4409 Change the size of the other siblings. */
4410 for (child
= first_parallel
;
4412 child
= XWINDOW (child
)->next
)
4413 if (! EQ (child
, window
))
4414 size_window (child
, XINT (CURSIZE (child
)) + delta
,
4415 horiz_flag
, 0, 0, 1);
4420 /* If we made a window so small it got deleted,
4421 we failed. Report failure. */
4422 if (delcount
!= window_deletion_count
)
4424 Fset_window_configuration (old_config
);
4425 error ("Cannot adjust window size as specified");
4428 /* Adjust glyph matrices. */
4429 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4435 DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge
,
4436 Sadjust_window_trailing_edge
, 3, 3, 0,
4437 doc
: /* Adjust the bottom or right edge of WINDOW by DELTA.
4438 If HORIZONTAL is non-nil, that means adjust the width, moving the right edge.
4439 Otherwise, adjust the height, moving the bottom edge.
4441 Following siblings of the selected window are resized to fulfill
4442 the size request. If they become too small in the process, they
4443 are not deleted; instead, we signal an error. */)
4444 (window
, delta
, horizontal
)
4445 Lisp_Object window
, delta
, horizontal
;
4447 CHECK_NUMBER (delta
);
4448 adjust_window_trailing_edge (window
, XINT (delta
), !NILP (horizontal
));
4450 if (! NILP (Vwindow_configuration_change_hook
))
4451 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
4458 /***********************************************************************
4459 Resizing Mini-Windows
4460 ***********************************************************************/
4462 static void shrink_window_lowest_first
P_ ((struct window
*, int));
4464 enum save_restore_action
4471 static int save_restore_orig_size
P_ ((struct window
*,
4472 enum save_restore_action
));
4474 /* Shrink windows rooted in window W to HEIGHT. Take the space needed
4475 from lowest windows first. */
4478 shrink_window_lowest_first (w
, height
)
4486 xassert (!MINI_WINDOW_P (w
));
4488 /* Set redisplay hints. */
4489 XSETFASTINT (w
->last_modified
, 0);
4490 XSETFASTINT (w
->last_overlay_modified
, 0);
4491 windows_or_buffers_changed
++;
4492 FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w
))) = 1;
4494 old_height
= XFASTINT (w
->total_lines
);
4495 XSETFASTINT (w
->total_lines
, height
);
4497 if (!NILP (w
->hchild
))
4499 for (child
= w
->hchild
; !NILP (child
); child
= c
->next
)
4501 c
= XWINDOW (child
);
4502 c
->top_line
= w
->top_line
;
4503 shrink_window_lowest_first (c
, height
);
4506 else if (!NILP (w
->vchild
))
4508 Lisp_Object last_child
;
4509 int delta
= old_height
- height
;
4514 /* Find the last child. We are taking space from lowest windows
4515 first, so we iterate over children from the last child
4517 for (child
= w
->vchild
; !NILP (child
); child
= XWINDOW (child
)->next
)
4520 /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */
4521 for (child
= last_child
; delta
&& !NILP (child
); child
= c
->prev
)
4525 c
= XWINDOW (child
);
4526 this_one
= XFASTINT (c
->total_lines
) - MIN_SAFE_WINDOW_HEIGHT
;
4528 if (this_one
> delta
)
4531 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
) - this_one
);
4535 /* Compute new positions. */
4536 last_top
= XINT (w
->top_line
);
4537 for (child
= w
->vchild
; !NILP (child
); child
= c
->next
)
4539 c
= XWINDOW (child
);
4540 c
->top_line
= make_number (last_top
);
4541 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
));
4542 last_top
+= XFASTINT (c
->total_lines
);
4548 /* Save, restore, or check positions and sizes in the window tree
4549 rooted at W. ACTION says what to do.
4551 If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and
4552 orig_total_lines members are valid for all windows in the window
4553 tree. Value is non-zero if they are valid.
4555 If ACTION is SAVE_ORIG_SIZES, save members top and height in
4556 orig_top_line and orig_total_lines for all windows in the tree.
4558 If ACTION is RESTORE_ORIG_SIZES, restore top and height from values
4559 stored in orig_top_line and orig_total_lines for all windows. */
4562 save_restore_orig_size (w
, action
)
4564 enum save_restore_action action
;
4570 if (!NILP (w
->hchild
))
4572 if (!save_restore_orig_size (XWINDOW (w
->hchild
), action
))
4575 else if (!NILP (w
->vchild
))
4577 if (!save_restore_orig_size (XWINDOW (w
->vchild
), action
))
4583 case CHECK_ORIG_SIZES
:
4584 if (!INTEGERP (w
->orig_top_line
) || !INTEGERP (w
->orig_total_lines
))
4588 case SAVE_ORIG_SIZES
:
4589 w
->orig_top_line
= w
->top_line
;
4590 w
->orig_total_lines
= w
->total_lines
;
4591 XSETFASTINT (w
->last_modified
, 0);
4592 XSETFASTINT (w
->last_overlay_modified
, 0);
4595 case RESTORE_ORIG_SIZES
:
4596 xassert (INTEGERP (w
->orig_top_line
) && INTEGERP (w
->orig_total_lines
));
4597 w
->top_line
= w
->orig_top_line
;
4598 w
->total_lines
= w
->orig_total_lines
;
4599 w
->orig_total_lines
= w
->orig_top_line
= Qnil
;
4600 XSETFASTINT (w
->last_modified
, 0);
4601 XSETFASTINT (w
->last_overlay_modified
, 0);
4608 w
= NILP (w
->next
) ? NULL
: XWINDOW (w
->next
);
4615 /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
4616 without deleting other windows. */
4619 grow_mini_window (w
, delta
)
4623 struct frame
*f
= XFRAME (w
->frame
);
4624 struct window
*root
;
4626 xassert (MINI_WINDOW_P (w
));
4627 xassert (delta
>= 0);
4629 /* Check values of window_min_width and window_min_height for
4631 check_min_window_sizes ();
4633 /* Compute how much we can enlarge the mini-window without deleting
4635 root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4638 int min_height
= window_min_size (root
, 0, 0, 0);
4639 if (XFASTINT (root
->total_lines
) - delta
< min_height
)
4640 /* Note that the root window may already be smaller than
4642 delta
= max (0, XFASTINT (root
->total_lines
) - min_height
);
4647 /* Save original window sizes and positions, if not already done. */
4648 if (!save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4649 save_restore_orig_size (root
, SAVE_ORIG_SIZES
);
4651 /* Shrink other windows. */
4652 shrink_window_lowest_first (root
, XFASTINT (root
->total_lines
) - delta
);
4654 /* Grow the mini-window. */
4655 w
->top_line
= make_number (XFASTINT (root
->top_line
) + XFASTINT (root
->total_lines
));
4656 w
->total_lines
= make_number (XFASTINT (w
->total_lines
) + delta
);
4657 XSETFASTINT (w
->last_modified
, 0);
4658 XSETFASTINT (w
->last_overlay_modified
, 0);
4665 /* Shrink mini-window W. If there is recorded info about window sizes
4666 before a call to grow_mini_window, restore recorded window sizes.
4667 Otherwise, if the mini-window is higher than 1 line, resize it to 1
4671 shrink_mini_window (w
)
4674 struct frame
*f
= XFRAME (w
->frame
);
4675 struct window
*root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4677 if (save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4679 save_restore_orig_size (root
, RESTORE_ORIG_SIZES
);
4681 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
4682 windows_or_buffers_changed
= 1;
4684 else if (XFASTINT (w
->total_lines
) > 1)
4686 /* Distribute the additional lines of the mini-window
4687 among the other windows. */
4689 XSETWINDOW (window
, w
);
4690 enlarge_window (window
, 1 - XFASTINT (w
->total_lines
), 0);
4696 /* Mark window cursors off for all windows in the window tree rooted
4697 at W by setting their phys_cursor_on_p flag to zero. Called from
4698 xterm.c, e.g. when a frame is cleared and thereby all cursors on
4699 the frame are cleared. */
4702 mark_window_cursors_off (w
)
4707 if (!NILP (w
->hchild
))
4708 mark_window_cursors_off (XWINDOW (w
->hchild
));
4709 else if (!NILP (w
->vchild
))
4710 mark_window_cursors_off (XWINDOW (w
->vchild
));
4712 w
->phys_cursor_on_p
= 0;
4714 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
4719 /* Return number of lines of text (not counting mode lines) in W. */
4722 window_internal_height (w
)
4725 int ht
= XFASTINT (w
->total_lines
);
4727 if (!MINI_WINDOW_P (w
))
4729 if (!NILP (w
->parent
)
4730 || !NILP (w
->vchild
)
4731 || !NILP (w
->hchild
)
4734 || WINDOW_WANTS_MODELINE_P (w
))
4737 if (WINDOW_WANTS_HEADER_LINE_P (w
))
4745 /* Return the number of columns in W.
4746 Don't count columns occupied by scroll bars or the vertical bar
4747 separating W from the sibling to its right. */
4750 window_box_text_cols (w
)
4753 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
4754 int width
= XINT (w
->total_cols
);
4756 if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w
))
4757 /* Scroll bars occupy a few columns. */
4758 width
-= WINDOW_CONFIG_SCROLL_BAR_COLS (w
);
4759 else if (!FRAME_WINDOW_P (f
)
4760 && !WINDOW_RIGHTMOST_P (w
) && !WINDOW_FULL_WIDTH_P (w
))
4761 /* The column of `|' characters separating side-by-side windows
4762 occupies one column only. */
4765 if (FRAME_WINDOW_P (f
))
4766 /* On window-systems, fringes and display margins cannot be
4767 used for normal text. */
4768 width
-= (WINDOW_FRINGE_COLS (w
)
4769 + WINDOW_LEFT_MARGIN_COLS (w
)
4770 + WINDOW_RIGHT_MARGIN_COLS (w
));
4776 /************************************************************************
4778 ***********************************************************************/
4780 /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
4781 N screen-fulls, which is defined as the height of the window minus
4782 next_screen_context_lines. If WHOLE is zero, scroll up N lines
4783 instead. Negative values of N mean scroll down. NOERROR non-zero
4784 means don't signal an error if we try to move over BEGV or ZV,
4788 window_scroll (window
, n
, whole
, noerror
)
4796 /* If we must, use the pixel-based version which is much slower than
4797 the line-based one but can handle varying line heights. */
4798 if (FRAME_WINDOW_P (XFRAME (XWINDOW (window
)->frame
)))
4799 window_scroll_pixel_based (window
, n
, whole
, noerror
);
4801 window_scroll_line_based (window
, n
, whole
, noerror
);
4807 /* Implementation of window_scroll that works based on pixel line
4808 heights. See the comment of window_scroll for parameter
4812 window_scroll_pixel_based (window
, n
, whole
, noerror
)
4819 struct window
*w
= XWINDOW (window
);
4820 struct text_pos start
;
4822 int this_scroll_margin
;
4823 /* True if we fiddled the window vscroll field without really scrolling. */
4826 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
4828 /* If PT is not visible in WINDOW, move back one half of
4829 the screen. Allow PT to be partially visible, otherwise
4830 something like (scroll-down 1) with PT in the line before
4831 the partially visible one would recenter. */
4832 tem
= Fpos_visible_in_window_p (make_number (PT
), window
, Qt
);
4835 /* Move backward half the height of the window. Performance note:
4836 vmotion used here is about 10% faster, but would give wrong
4837 results for variable height lines. */
4838 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4839 it
.current_y
= it
.last_visible_y
;
4840 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
4842 /* The function move_iterator_vertically may move over more than
4843 the specified y-distance. If it->w is small, e.g. a
4844 mini-buffer window, we may end up in front of the window's
4845 display area. This is the case when Start displaying at the
4846 start of the line containing PT in this case. */
4847 if (it
.current_y
<= 0)
4849 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4850 move_it_vertically_backward (&it
, 0);
4854 start
= it
.current
.pos
;
4856 else if (auto_window_vscroll_p
)
4858 if (tem
= XCAR (XCDR (XCDR (tem
))), CONSP (tem
))
4861 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4863 dy
= max ((window_box_height (w
)
4864 - next_screen_context_lines
* dy
),
4868 if (n
< 0 && (px
= XINT (XCAR (tem
))) > 0)
4870 px
= max (0, -w
->vscroll
- min (px
, -dy
));
4871 Fset_window_vscroll (window
, make_number (px
), Qt
);
4874 if (n
> 0 && (px
= XINT (XCDR (tem
))) > 0)
4876 px
= max (0, -w
->vscroll
+ min (px
, dy
));
4877 Fset_window_vscroll (window
, make_number (px
), Qt
);
4881 Fset_window_vscroll (window
, make_number (0), Qt
);
4884 /* If scroll_preserve_screen_position is non-nil, we try to set
4885 point in the same window line as it is now, so get that line. */
4886 if (!NILP (Vscroll_preserve_screen_position
))
4888 /* We preserve the goal pixel coordinate across consecutive
4889 calls to scroll-up or scroll-down. This avoids the
4890 possibility of point becoming "stuck" on a tall line when
4891 scrolling by one line. */
4892 if (window_scroll_pixel_based_preserve_y
< 0
4893 || (!EQ (current_kboard
->Vlast_command
, Qscroll_up
)
4894 && !EQ (current_kboard
->Vlast_command
, Qscroll_down
)))
4896 start_display (&it
, w
, start
);
4897 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4898 window_scroll_pixel_based_preserve_y
= it
.current_y
;
4902 window_scroll_pixel_based_preserve_y
= -1;
4904 /* Move iterator it from start the specified distance forward or
4905 backward. The result is the new window start. */
4906 start_display (&it
, w
, start
);
4909 int start_pos
= IT_CHARPOS (it
);
4910 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4911 dy
= max ((window_box_height (w
)
4912 - next_screen_context_lines
* dy
),
4915 /* Note that move_it_vertically always moves the iterator to the
4916 start of a line. So, if the last line doesn't have a newline,
4917 we would end up at the start of the line ending at ZV. */
4920 move_it_vertically_backward (&it
, -dy
);
4921 /* Ensure we actually does move, e.g. in case we are currently
4922 looking at an image that is taller that the window height. */
4923 while (start_pos
== IT_CHARPOS (it
)
4924 && start_pos
> BEGV
)
4925 move_it_by_lines (&it
, -1, 1);
4929 move_it_to (&it
, ZV
, -1, it
.current_y
+ dy
, -1,
4930 MOVE_TO_POS
| MOVE_TO_Y
);
4931 /* Ensure we actually does move, e.g. in case we are currently
4932 looking at an image that is taller that the window height. */
4933 while (start_pos
== IT_CHARPOS (it
)
4935 move_it_by_lines (&it
, 1, 1);
4939 move_it_by_lines (&it
, n
, 1);
4941 /* We failed if we find ZV is already on the screen (scrolling up,
4942 means there's nothing past the end), or if we can't start any
4943 earlier (scrolling down, means there's nothing past the top). */
4944 if ((n
> 0 && IT_CHARPOS (it
) == ZV
)
4945 || (n
< 0 && IT_CHARPOS (it
) == CHARPOS (start
)))
4947 if (IT_CHARPOS (it
) == ZV
)
4949 if (it
.current_y
< it
.last_visible_y
4950 && (it
.current_y
+ it
.max_ascent
+ it
.max_descent
4951 > it
.last_visible_y
))
4953 /* The last line was only partially visible, make it fully
4955 w
->vscroll
= (it
.last_visible_y
4956 - it
.current_y
+ it
.max_ascent
+ it
.max_descent
);
4957 adjust_glyphs (it
.f
);
4961 else if (n
< 0) /* could happen with empty buffers */
4962 xsignal0 (Qbeginning_of_buffer
);
4964 xsignal0 (Qend_of_buffer
);
4968 if (w
->vscroll
!= 0)
4969 /* The first line was only partially visible, make it fully
4975 xsignal0 (Qbeginning_of_buffer
);
4978 /* If control gets here, then we vscrolled. */
4980 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
4982 /* Don't try to change the window start below. */
4988 int pos
= IT_CHARPOS (it
);
4991 /* If in the middle of a multi-glyph character move forward to
4992 the next character. */
4993 if (in_display_vector_p (&it
))
4996 move_it_to (&it
, pos
, -1, -1, -1, MOVE_TO_POS
);
4999 /* Set the window start, and set up the window for redisplay. */
5000 set_marker_restricted (w
->start
, make_number (pos
),
5002 bytepos
= XMARKER (w
->start
)->bytepos
;
5003 w
->start_at_line_beg
= ((pos
== BEGV
|| FETCH_BYTE (bytepos
- 1) == '\n')
5005 w
->update_mode_line
= Qt
;
5006 XSETFASTINT (w
->last_modified
, 0);
5007 XSETFASTINT (w
->last_overlay_modified
, 0);
5008 /* Set force_start so that redisplay_window will run the
5009 window-scroll-functions. */
5010 w
->force_start
= Qt
;
5013 /* The rest of this function uses current_y in a nonstandard way,
5014 not including the height of the header line if any. */
5015 it
.current_y
= it
.vpos
= 0;
5017 /* Move PT out of scroll margins.
5018 This code wants current_y to be zero at the window start position
5019 even if there is a header line. */
5020 this_scroll_margin
= max (0, scroll_margin
);
5021 this_scroll_margin
= min (this_scroll_margin
, XFASTINT (w
->total_lines
) / 4);
5022 this_scroll_margin
*= FRAME_LINE_HEIGHT (it
.f
);
5026 /* We moved the window start towards ZV, so PT may be now
5027 in the scroll margin at the top. */
5028 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
5029 if (IT_CHARPOS (it
) == PT
&& it
.current_y
>= this_scroll_margin
5030 && (NILP (Vscroll_preserve_screen_position
)
5031 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5032 /* We found PT at a legitimate height. Leave it alone. */
5034 else if (window_scroll_pixel_based_preserve_y
>= 0)
5036 /* If we have a header line, take account of it.
5037 This is necessary because we set it.current_y to 0, above. */
5038 move_it_to (&it
, -1, -1,
5039 window_scroll_pixel_based_preserve_y
5040 - (WINDOW_WANTS_HEADER_LINE_P (w
) ? 1 : 0 ),
5042 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5046 while (it
.current_y
< this_scroll_margin
)
5048 int prev
= it
.current_y
;
5049 move_it_by_lines (&it
, 1, 1);
5050 if (prev
== it
.current_y
)
5053 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5058 int charpos
, bytepos
;
5061 /* Save our position, for the
5062 window_scroll_pixel_based_preserve_y case. */
5063 charpos
= IT_CHARPOS (it
);
5064 bytepos
= IT_BYTEPOS (it
);
5066 /* We moved the window start towards BEGV, so PT may be now
5067 in the scroll margin at the bottom. */
5068 move_it_to (&it
, PT
, -1,
5069 (it
.last_visible_y
- CURRENT_HEADER_LINE_HEIGHT (w
)
5070 - this_scroll_margin
- 1),
5072 MOVE_TO_POS
| MOVE_TO_Y
);
5074 /* Save our position, in case it's correct. */
5075 charpos
= IT_CHARPOS (it
);
5076 bytepos
= IT_BYTEPOS (it
);
5078 /* See if point is on a partially visible line at the end. */
5079 if (it
.what
== IT_EOB
)
5080 partial_p
= it
.current_y
+ it
.ascent
+ it
.descent
> it
.last_visible_y
;
5083 move_it_by_lines (&it
, 1, 1);
5084 partial_p
= it
.current_y
> it
.last_visible_y
;
5087 if (charpos
== PT
&& !partial_p
5088 && (NILP (Vscroll_preserve_screen_position
)
5089 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5090 /* We found PT before we found the display margin, so PT is ok. */
5092 else if (window_scroll_pixel_based_preserve_y
>= 0)
5094 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5095 start_display (&it
, w
, start
);
5096 /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT
5097 here because we called start_display again and did not
5098 alter it.current_y this time. */
5099 move_it_to (&it
, -1, -1, window_scroll_pixel_based_preserve_y
, -1,
5101 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5106 /* The last line was only partially visible, so back up two
5107 lines to make sure we're on a fully visible line. */
5109 move_it_by_lines (&it
, -2, 0);
5110 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5113 /* No, the position we saved is OK, so use it. */
5114 SET_PT_BOTH (charpos
, bytepos
);
5120 /* Implementation of window_scroll that works based on screen lines.
5121 See the comment of window_scroll for parameter descriptions. */
5124 window_scroll_line_based (window
, n
, whole
, noerror
)
5130 register struct window
*w
= XWINDOW (window
);
5131 register int opoint
= PT
, opoint_byte
= PT_BYTE
;
5132 register int pos
, pos_byte
;
5133 register int ht
= window_internal_height (w
);
5134 register Lisp_Object tem
;
5138 struct position posit
;
5141 /* If scrolling screen-fulls, compute the number of lines to
5142 scroll from the window's height. */
5144 n
*= max (1, ht
- next_screen_context_lines
);
5146 startpos
= marker_position (w
->start
);
5148 posit
= *compute_motion (startpos
, 0, 0, 0,
5150 -1, XINT (w
->hscroll
),
5152 original_vpos
= posit
.vpos
;
5154 XSETFASTINT (tem
, PT
);
5155 tem
= Fpos_visible_in_window_p (tem
, window
, Qnil
);
5159 Fvertical_motion (make_number (- (ht
/ 2)), window
);
5164 lose
= n
< 0 && PT
== BEGV
;
5165 Fvertical_motion (make_number (n
), window
);
5169 SET_PT_BOTH (opoint
, opoint_byte
);
5176 xsignal0 (Qbeginning_of_buffer
);
5181 int this_scroll_margin
= scroll_margin
;
5183 /* Don't use a scroll margin that is negative or too large. */
5184 if (this_scroll_margin
< 0)
5185 this_scroll_margin
= 0;
5187 if (XINT (w
->total_lines
) < 4 * scroll_margin
)
5188 this_scroll_margin
= XINT (w
->total_lines
) / 4;
5190 set_marker_restricted_both (w
->start
, w
->buffer
, pos
, pos_byte
);
5191 w
->start_at_line_beg
= bolp
;
5192 w
->update_mode_line
= Qt
;
5193 XSETFASTINT (w
->last_modified
, 0);
5194 XSETFASTINT (w
->last_overlay_modified
, 0);
5195 /* Set force_start so that redisplay_window will run
5196 the window-scroll-functions. */
5197 w
->force_start
= Qt
;
5199 if (!NILP (Vscroll_preserve_screen_position
)
5200 && (whole
|| !EQ (Vscroll_preserve_screen_position
, Qt
)))
5202 SET_PT_BOTH (pos
, pos_byte
);
5203 Fvertical_motion (make_number (original_vpos
), window
);
5205 /* If we scrolled forward, put point enough lines down
5206 that it is outside the scroll margin. */
5211 if (this_scroll_margin
> 0)
5213 SET_PT_BOTH (pos
, pos_byte
);
5214 Fvertical_motion (make_number (this_scroll_margin
), window
);
5220 if (top_margin
<= opoint
)
5221 SET_PT_BOTH (opoint
, opoint_byte
);
5222 else if (!NILP (Vscroll_preserve_screen_position
))
5224 SET_PT_BOTH (pos
, pos_byte
);
5225 Fvertical_motion (make_number (original_vpos
), window
);
5228 SET_PT (top_margin
);
5234 /* If we scrolled backward, put point near the end of the window
5235 but not within the scroll margin. */
5236 SET_PT_BOTH (pos
, pos_byte
);
5237 tem
= Fvertical_motion (make_number (ht
- this_scroll_margin
), window
);
5238 if (XFASTINT (tem
) == ht
- this_scroll_margin
)
5241 bottom_margin
= PT
+ 1;
5243 if (bottom_margin
> opoint
)
5244 SET_PT_BOTH (opoint
, opoint_byte
);
5247 if (!NILP (Vscroll_preserve_screen_position
))
5249 SET_PT_BOTH (pos
, pos_byte
);
5250 Fvertical_motion (make_number (original_vpos
), window
);
5253 Fvertical_motion (make_number (-1), window
);
5262 xsignal0 (Qend_of_buffer
);
5267 /* Scroll selected_window up or down. If N is nil, scroll a
5268 screen-full which is defined as the height of the window minus
5269 next_screen_context_lines. If N is the symbol `-', scroll.
5270 DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
5271 up. This is the guts of Fscroll_up and Fscroll_down. */
5274 scroll_command (n
, direction
)
5278 int count
= SPECPDL_INDEX ();
5280 xassert (abs (direction
) == 1);
5282 /* If selected window's buffer isn't current, make it current for
5283 the moment. But don't screw up if window_scroll gets an error. */
5284 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
5286 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5287 Fset_buffer (XWINDOW (selected_window
)->buffer
);
5289 /* Make redisplay consider other windows than just selected_window. */
5290 ++windows_or_buffers_changed
;
5294 window_scroll (selected_window
, direction
, 1, 0);
5295 else if (EQ (n
, Qminus
))
5296 window_scroll (selected_window
, -direction
, 1, 0);
5299 n
= Fprefix_numeric_value (n
);
5300 window_scroll (selected_window
, XINT (n
) * direction
, 0, 0);
5303 unbind_to (count
, Qnil
);
5306 DEFUN ("scroll-up", Fscroll_up
, Sscroll_up
, 0, 1, "P",
5307 doc
: /* Scroll text of current window upward ARG lines.
5308 If ARG is omitted or nil, scroll upward by a near full screen.
5309 A near full screen is `next-screen-context-lines' less than a full screen.
5310 Negative ARG means scroll downward.
5311 If ARG is the atom `-', scroll downward by nearly full screen.
5312 When calling from a program, supply as argument a number, nil, or `-'. */)
5316 scroll_command (arg
, 1);
5320 DEFUN ("scroll-down", Fscroll_down
, Sscroll_down
, 0, 1, "P",
5321 doc
: /* Scroll text of current window down ARG lines.
5322 If ARG is omitted or nil, scroll down by a near full screen.
5323 A near full screen is `next-screen-context-lines' less than a full screen.
5324 Negative ARG means scroll upward.
5325 If ARG is the atom `-', scroll upward by nearly full screen.
5326 When calling from a program, supply as argument a number, nil, or `-'. */)
5330 scroll_command (arg
, -1);
5334 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling
, Sother_window_for_scrolling
, 0, 0, 0,
5335 doc
: /* Return the other window for \"other window scroll\" commands.
5336 If `other-window-scroll-buffer' is non-nil, a window
5337 showing that buffer is used.
5338 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5339 specifies the window. This takes precedence over
5340 `other-window-scroll-buffer'. */)
5345 if (MINI_WINDOW_P (XWINDOW (selected_window
))
5346 && !NILP (Vminibuf_scroll_window
))
5347 window
= Vminibuf_scroll_window
;
5348 /* If buffer is specified, scroll that buffer. */
5349 else if (!NILP (Vother_window_scroll_buffer
))
5351 window
= Fget_buffer_window (Vother_window_scroll_buffer
, Qnil
);
5353 window
= Fdisplay_buffer (Vother_window_scroll_buffer
, Qt
, Qnil
);
5357 /* Nothing specified; look for a neighboring window on the same
5359 window
= Fnext_window (selected_window
, Qnil
, Qnil
);
5361 if (EQ (window
, selected_window
))
5362 /* That didn't get us anywhere; look for a window on another
5365 window
= Fnext_window (window
, Qnil
, Qt
);
5366 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window
))))
5367 && ! EQ (window
, selected_window
));
5370 CHECK_LIVE_WINDOW (window
);
5372 if (EQ (window
, selected_window
))
5373 error ("There is no other window");
5378 DEFUN ("scroll-other-window", Fscroll_other_window
, Sscroll_other_window
, 0, 1, "P",
5379 doc
: /* Scroll next window upward ARG lines; or near full screen if no ARG.
5380 A near full screen is `next-screen-context-lines' less than a full screen.
5381 The next window is the one below the current one; or the one at the top
5382 if the current one is at the bottom. Negative ARG means scroll downward.
5383 If ARG is the atom `-', scroll downward by nearly full screen.
5384 When calling from a program, supply as argument a number, nil, or `-'.
5386 If `other-window-scroll-buffer' is non-nil, scroll the window
5387 showing that buffer, popping the buffer up if necessary.
5388 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5389 specifies the window to scroll. This takes precedence over
5390 `other-window-scroll-buffer'. */)
5396 int count
= SPECPDL_INDEX ();
5398 window
= Fother_window_for_scrolling ();
5399 w
= XWINDOW (window
);
5401 /* Don't screw up if window_scroll gets an error. */
5402 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5403 ++windows_or_buffers_changed
;
5405 Fset_buffer (w
->buffer
);
5406 SET_PT (marker_position (w
->pointm
));
5409 window_scroll (window
, 1, 1, 1);
5410 else if (EQ (arg
, Qminus
))
5411 window_scroll (window
, -1, 1, 1);
5417 window_scroll (window
, XINT (arg
), 0, 1);
5420 set_marker_both (w
->pointm
, Qnil
, PT
, PT_BYTE
);
5421 unbind_to (count
, Qnil
);
5426 DEFUN ("scroll-left", Fscroll_left
, Sscroll_left
, 0, 2, "P\np",
5427 doc
: /* Scroll selected window display ARG columns left.
5428 Default for ARG is window width minus 2.
5429 Value is the total amount of leftward horizontal scrolling in
5430 effect after the change.
5431 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5432 lower bound for automatic scrolling, i.e. automatic scrolling
5433 will not scroll a window to a column less than the value returned
5434 by this function. This happens in an interactive call. */)
5436 register Lisp_Object arg
, set_minimum
;
5440 struct window
*w
= XWINDOW (selected_window
);
5443 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5445 arg
= Fprefix_numeric_value (arg
);
5447 hscroll
= XINT (w
->hscroll
) + XINT (arg
);
5448 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5450 if (!NILP (set_minimum
))
5451 w
->min_hscroll
= w
->hscroll
;
5456 DEFUN ("scroll-right", Fscroll_right
, Sscroll_right
, 0, 2, "P\np",
5457 doc
: /* Scroll selected window display ARG columns right.
5458 Default for ARG is window width minus 2.
5459 Value is the total amount of leftward horizontal scrolling in
5460 effect after the change.
5461 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5462 lower bound for automatic scrolling, i.e. automatic scrolling
5463 will not scroll a window to a column less than the value returned
5464 by this function. This happens in an interactive call. */)
5466 register Lisp_Object arg
, set_minimum
;
5470 struct window
*w
= XWINDOW (selected_window
);
5473 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5475 arg
= Fprefix_numeric_value (arg
);
5477 hscroll
= XINT (w
->hscroll
) - XINT (arg
);
5478 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5480 if (!NILP (set_minimum
))
5481 w
->min_hscroll
= w
->hscroll
;
5486 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window
, Sminibuffer_selected_window
, 0, 0, 0,
5487 doc
: /* Return the window which was selected when entering the minibuffer.
5488 Returns nil, if current window is not a minibuffer window. */)
5491 if (minibuf_level
> 0
5492 && MINI_WINDOW_P (XWINDOW (selected_window
))
5493 && WINDOW_LIVE_P (minibuf_selected_window
))
5494 return minibuf_selected_window
;
5499 /* Value is the number of lines actually displayed in window W,
5500 as opposed to its height. */
5503 displayed_window_lines (w
)
5507 struct text_pos start
;
5508 int height
= window_box_height (w
);
5509 struct buffer
*old_buffer
;
5512 if (XBUFFER (w
->buffer
) != current_buffer
)
5514 old_buffer
= current_buffer
;
5515 set_buffer_internal (XBUFFER (w
->buffer
));
5520 /* In case W->start is out of the accessible range, do something
5521 reasonable. This happens in Info mode when Info-scroll-down
5522 calls (recenter -1) while W->start is 1. */
5523 if (XMARKER (w
->start
)->charpos
< BEGV
)
5524 SET_TEXT_POS (start
, BEGV
, BEGV_BYTE
);
5525 else if (XMARKER (w
->start
)->charpos
> ZV
)
5526 SET_TEXT_POS (start
, ZV
, ZV_BYTE
);
5528 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5530 start_display (&it
, w
, start
);
5531 move_it_vertically (&it
, height
);
5532 bottom_y
= line_bottom_y (&it
);
5534 /* rms: On a non-window display,
5535 the value of it.vpos at the bottom of the screen
5536 seems to be 1 larger than window_box_height (w).
5537 This kludge fixes a bug whereby (move-to-window-line -1)
5538 when ZV is on the last screen line
5539 moves to the previous screen line instead of the last one. */
5540 if (! FRAME_WINDOW_P (XFRAME (w
->frame
)))
5543 /* Add in empty lines at the bottom of the window. */
5544 if (bottom_y
< height
)
5546 int uy
= FRAME_LINE_HEIGHT (it
.f
);
5547 it
.vpos
+= (height
- bottom_y
+ uy
- 1) / uy
;
5551 set_buffer_internal (old_buffer
);
5557 DEFUN ("recenter", Frecenter
, Srecenter
, 0, 1, "P",
5558 doc
: /* Center point in window and redisplay frame.
5559 With prefix argument ARG, recenter putting point on screen line ARG
5560 relative to the current window. If ARG is negative, it counts up from the
5561 bottom of the window. (ARG should be less than the height of the window.)
5563 If ARG is omitted or nil, erase the entire frame and then
5564 redraw with point in the center of the current window.
5565 Just C-u as prefix means put point in the center of the window
5566 and redisplay normally--don't erase and redraw the frame. */)
5568 register Lisp_Object arg
;
5570 struct window
*w
= XWINDOW (selected_window
);
5571 struct buffer
*buf
= XBUFFER (w
->buffer
);
5572 struct buffer
*obuf
= current_buffer
;
5574 int charpos
, bytepos
;
5576 int this_scroll_margin
;
5578 /* If redisplay is suppressed due to an error, try again. */
5579 obuf
->display_error_modiff
= 0;
5585 /* Invalidate pixel data calculated for all compositions. */
5586 for (i
= 0; i
< n_compositions
; i
++)
5587 composition_table
[i
]->font
= NULL
;
5589 Fredraw_frame (w
->frame
);
5590 SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w
)));
5593 else if (CONSP (arg
)) /* Just C-u. */
5597 arg
= Fprefix_numeric_value (arg
);
5602 set_buffer_internal (buf
);
5604 /* Do this after making BUF current
5605 in case scroll_margin is buffer-local. */
5606 this_scroll_margin
= max (0, scroll_margin
);
5607 this_scroll_margin
= min (this_scroll_margin
,
5608 XFASTINT (w
->total_lines
) / 4);
5610 /* Handle centering on a graphical frame specially. Such frames can
5611 have variable-height lines and centering point on the basis of
5612 line counts would lead to strange effects. */
5613 if (FRAME_WINDOW_P (XFRAME (w
->frame
)))
5620 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5621 start_display (&it
, w
, pt
);
5622 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
5623 charpos
= IT_CHARPOS (it
);
5624 bytepos
= IT_BYTEPOS (it
);
5631 int extra_line_spacing
;
5632 int h
= window_box_height (w
);
5634 iarg
= - max (-iarg
, this_scroll_margin
);
5636 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5637 start_display (&it
, w
, pt
);
5639 /* Be sure we have the exact height of the full line containing PT. */
5640 move_it_by_lines (&it
, 0, 1);
5642 /* The amount of pixels we have to move back is the window
5643 height minus what's displayed in the line containing PT,
5644 and the lines below. */
5647 move_it_by_lines (&it
, nlines
, 1);
5649 if (it
.vpos
== nlines
)
5653 /* Last line has no newline */
5654 h
-= line_bottom_y (&it
);
5658 /* Don't reserve space for extra line spacing of last line. */
5659 extra_line_spacing
= it
.max_extra_line_spacing
;
5661 /* If we can't move down NLINES lines because we hit
5662 the end of the buffer, count in some empty lines. */
5663 if (it
.vpos
< nlines
)
5666 extra_line_spacing
= it
.extra_line_spacing
;
5667 h
-= nlines
* (FRAME_LINE_HEIGHT (it
.f
) + extra_line_spacing
);
5672 /* Now find the new top line (starting position) of the window. */
5673 start_display (&it
, w
, pt
);
5675 move_it_vertically_backward (&it
, h
);
5677 /* If extra line spacing is present, we may move too far
5678 back. This causes the last line to be only partially
5679 visible (which triggers redisplay to recenter that line
5680 in the middle), so move forward.
5681 But ignore extra line spacing on last line, as it is not
5682 considered to be part of the visible height of the line.
5684 h
+= extra_line_spacing
;
5685 while (-it
.current_y
> h
)
5686 move_it_by_lines (&it
, 1, 1);
5688 charpos
= IT_CHARPOS (it
);
5689 bytepos
= IT_BYTEPOS (it
);
5693 struct position pos
;
5695 iarg
= max (iarg
, this_scroll_margin
);
5697 pos
= *vmotion (PT
, -iarg
, w
);
5698 charpos
= pos
.bufpos
;
5699 bytepos
= pos
.bytepos
;
5704 struct position pos
;
5705 int ht
= window_internal_height (w
);
5712 /* Don't let it get into the margin at either top or bottom. */
5713 iarg
= max (iarg
, this_scroll_margin
);
5714 iarg
= min (iarg
, ht
- this_scroll_margin
- 1);
5716 pos
= *vmotion (PT
, - iarg
, w
);
5717 charpos
= pos
.bufpos
;
5718 bytepos
= pos
.bytepos
;
5721 /* Set the new window start. */
5722 set_marker_both (w
->start
, w
->buffer
, charpos
, bytepos
);
5723 w
->window_end_valid
= Qnil
;
5725 w
->optional_new_start
= Qt
;
5727 if (bytepos
== BEGV_BYTE
|| FETCH_BYTE (bytepos
- 1) == '\n')
5728 w
->start_at_line_beg
= Qt
;
5730 w
->start_at_line_beg
= Qnil
;
5732 set_buffer_internal (obuf
);
5737 DEFUN ("window-text-height", Fwindow_text_height
, Swindow_text_height
,
5739 doc
: /* Return the height in lines of the text display area of WINDOW.
5740 This doesn't include the mode-line (or header-line if any) or any
5741 partial-height lines in the text display area. */)
5745 struct window
*w
= decode_window (window
);
5746 int pixel_height
= window_box_height (w
);
5747 int line_height
= pixel_height
/ FRAME_LINE_HEIGHT (XFRAME (w
->frame
));
5748 return make_number (line_height
);
5753 DEFUN ("move-to-window-line", Fmove_to_window_line
, Smove_to_window_line
,
5755 doc
: /* Position point relative to window.
5756 With no argument, position point at center of window.
5757 An argument specifies vertical position within the window;
5758 zero means top of window, negative means relative to bottom of window. */)
5762 struct window
*w
= XWINDOW (selected_window
);
5766 int this_scroll_margin
;
5769 window
= selected_window
;
5770 start
= marker_position (w
->start
);
5771 if (start
< BEGV
|| start
> ZV
)
5773 int height
= window_internal_height (w
);
5774 Fvertical_motion (make_number (- (height
/ 2)), window
);
5775 set_marker_both (w
->start
, w
->buffer
, PT
, PT_BYTE
);
5776 w
->start_at_line_beg
= Fbolp ();
5777 w
->force_start
= Qt
;
5780 Fgoto_char (w
->start
);
5782 lines
= displayed_window_lines (w
);
5785 this_scroll_margin
= max (0, scroll_margin
);
5786 this_scroll_margin
= min (this_scroll_margin
, lines
/ 4);
5790 XSETFASTINT (arg
, lines
/ 2);
5793 int iarg
= XINT (Fprefix_numeric_value (arg
));
5796 iarg
= iarg
+ lines
;
5798 #if 0 /* This code would prevent move-to-window-line from moving point
5799 to a place inside the scroll margins (which would cause the
5800 next redisplay to scroll). I wrote this code, but then concluded
5801 it is probably better not to install it. However, it is here
5802 inside #if 0 so as not to lose it. -- rms. */
5804 /* Don't let it get into the margin at either top or bottom. */
5805 iarg
= max (iarg
, this_scroll_margin
);
5806 iarg
= min (iarg
, lines
- this_scroll_margin
- 1);
5809 arg
= make_number (iarg
);
5812 /* Skip past a partially visible first line. */
5814 XSETINT (arg
, XINT (arg
) + 1);
5816 return Fvertical_motion (arg
, window
);
5821 /***********************************************************************
5822 Window Configuration
5823 ***********************************************************************/
5825 struct save_window_data
5827 EMACS_INT size_from_Lisp_Vector_struct
;
5828 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5829 Lisp_Object frame_cols
, frame_lines
, frame_menu_bar_lines
;
5830 Lisp_Object frame_tool_bar_lines
;
5831 Lisp_Object selected_frame
;
5832 Lisp_Object current_window
;
5833 Lisp_Object current_buffer
;
5834 Lisp_Object minibuf_scroll_window
;
5835 Lisp_Object minibuf_selected_window
;
5836 Lisp_Object root_window
;
5837 Lisp_Object focus_frame
;
5838 /* Record the values of window-min-width and window-min-height
5839 so that window sizes remain consistent with them. */
5840 Lisp_Object min_width
, min_height
;
5841 /* A vector, each of whose elements is a struct saved_window
5843 Lisp_Object saved_windows
;
5846 /* This is saved as a Lisp_Vector */
5849 /* these first two must agree with struct Lisp_Vector in lisp.h */
5850 EMACS_INT size_from_Lisp_Vector_struct
;
5851 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5854 Lisp_Object buffer
, start
, pointm
, mark
;
5855 Lisp_Object left_col
, top_line
, total_cols
, total_lines
;
5856 Lisp_Object hscroll
, min_hscroll
;
5857 Lisp_Object parent
, prev
;
5858 Lisp_Object start_at_line_beg
;
5859 Lisp_Object display_table
;
5860 Lisp_Object orig_top_line
, orig_total_lines
;
5861 Lisp_Object left_margin_cols
, right_margin_cols
;
5862 Lisp_Object left_fringe_width
, right_fringe_width
, fringes_outside_margins
;
5863 Lisp_Object scroll_bar_width
, vertical_scroll_bar_type
;
5864 Lisp_Object dedicated
;
5867 #define SAVED_WINDOW_N(swv,n) \
5868 ((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
5870 DEFUN ("window-configuration-p", Fwindow_configuration_p
, Swindow_configuration_p
, 1, 1, 0,
5871 doc
: /* Return t if OBJECT is a window-configuration object. */)
5875 return WINDOW_CONFIGURATIONP (object
) ? Qt
: Qnil
;
5878 DEFUN ("window-configuration-frame", Fwindow_configuration_frame
, Swindow_configuration_frame
, 1, 1, 0,
5879 doc
: /* Return the frame that CONFIG, a window-configuration object, is about. */)
5883 register struct save_window_data
*data
;
5884 struct Lisp_Vector
*saved_windows
;
5886 CHECK_WINDOW_CONFIGURATION (config
);
5888 data
= (struct save_window_data
*) XVECTOR (config
);
5889 saved_windows
= XVECTOR (data
->saved_windows
);
5890 return XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5893 DEFUN ("set-window-configuration", Fset_window_configuration
,
5894 Sset_window_configuration
, 1, 1, 0,
5895 doc
: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
5896 CONFIGURATION must be a value previously returned
5897 by `current-window-configuration' (which see).
5898 If CONFIGURATION was made from a frame that is now deleted,
5899 only frame-independent values can be restored. In this case,
5900 the return value is nil. Otherwise the value is t. */)
5902 Lisp_Object configuration
;
5904 register struct save_window_data
*data
;
5905 struct Lisp_Vector
*saved_windows
;
5906 Lisp_Object new_current_buffer
;
5911 CHECK_WINDOW_CONFIGURATION (configuration
);
5913 data
= (struct save_window_data
*) XVECTOR (configuration
);
5914 saved_windows
= XVECTOR (data
->saved_windows
);
5916 new_current_buffer
= data
->current_buffer
;
5917 if (NILP (XBUFFER (new_current_buffer
)->name
))
5918 new_current_buffer
= Qnil
;
5921 if (XBUFFER (new_current_buffer
) == current_buffer
)
5922 /* The code further down "preserves point" by saving here PT in
5923 old_point and then setting it later back into PT. When the
5924 current-selected-window and the final-selected-window both show
5925 the current buffer, this suffers from the problem that the
5926 current PT is the window-point of the current-selected-window,
5927 while the final PT is the point of the final-selected-window, so
5928 this copy from one PT to the other would end up moving the
5929 window-point of the final-selected-window to the window-point of
5930 the current-selected-window. So we have to be careful which
5931 point of the current-buffer we copy into old_point. */
5932 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5933 && WINDOWP (selected_window
)
5934 && EQ (XWINDOW (selected_window
)->buffer
, new_current_buffer
)
5935 && !EQ (selected_window
, data
->current_window
))
5936 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5940 /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of
5941 point in new_current_buffer as of the last time this buffer was
5942 used. This can be non-deterministic since it can be changed by
5943 things like jit-lock by mere temporary selection of some random
5944 window that happens to show this buffer.
5945 So if possible we want this arbitrary choice of "which point" to
5946 be the one from the to-be-selected-window so as to prevent this
5947 window's cursor from being copied from another window. */
5948 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5949 /* If current_window = selected_window, its point is in BUF_PT. */
5950 && !EQ (selected_window
, data
->current_window
))
5951 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5953 old_point
= BUF_PT (XBUFFER (new_current_buffer
));
5956 frame
= XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5959 /* If f is a dead frame, don't bother rebuilding its window tree.
5960 However, there is other stuff we should still try to do below. */
5961 if (FRAME_LIVE_P (f
))
5963 register struct window
*w
;
5964 register struct saved_window
*p
;
5965 struct window
*root_window
;
5966 struct window
**leaf_windows
;
5970 /* If the frame has been resized since this window configuration was
5971 made, we change the frame to the size specified in the
5972 configuration, restore the configuration, and then resize it
5973 back. We keep track of the prevailing height in these variables. */
5974 int previous_frame_lines
= FRAME_LINES (f
);
5975 int previous_frame_cols
= FRAME_COLS (f
);
5976 int previous_frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
5977 int previous_frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
5979 /* The mouse highlighting code could get screwed up
5980 if it runs during this. */
5983 if (XFASTINT (data
->frame_lines
) != previous_frame_lines
5984 || XFASTINT (data
->frame_cols
) != previous_frame_cols
)
5985 change_frame_size (f
, XFASTINT (data
->frame_lines
),
5986 XFASTINT (data
->frame_cols
), 0, 0, 0);
5987 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
5988 if (XFASTINT (data
->frame_menu_bar_lines
)
5989 != previous_frame_menu_bar_lines
)
5990 x_set_menu_bar_lines (f
, data
->frame_menu_bar_lines
, make_number (0));
5991 #ifdef HAVE_WINDOW_SYSTEM
5992 if (XFASTINT (data
->frame_tool_bar_lines
)
5993 != previous_frame_tool_bar_lines
)
5994 x_set_tool_bar_lines (f
, data
->frame_tool_bar_lines
, make_number (0));
5998 /* "Swap out" point from the selected window's buffer
5999 into the window itself. (Normally the pointm of the selected
6000 window holds garbage.) We do this now, before
6001 restoring the window contents, and prevent it from
6002 being done later on when we select a new window. */
6003 if (! NILP (XWINDOW (selected_window
)->buffer
))
6005 w
= XWINDOW (selected_window
);
6006 set_marker_both (w
->pointm
,
6008 BUF_PT (XBUFFER (w
->buffer
)),
6009 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6012 windows_or_buffers_changed
++;
6013 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
6015 /* Problem: Freeing all matrices and later allocating them again
6016 is a serious redisplay flickering problem. What we would
6017 really like to do is to free only those matrices not reused
6019 root_window
= XWINDOW (FRAME_ROOT_WINDOW (f
));
6021 = (struct window
**) alloca (count_windows (root_window
)
6022 * sizeof (struct window
*));
6023 n_leaf_windows
= get_leaf_windows (root_window
, leaf_windows
, 0);
6025 /* Temporarily avoid any problems with windows that are smaller
6026 than they are supposed to be. */
6027 window_min_height
= 1;
6028 window_min_width
= 1;
6031 Mark all windows now on frame as "deleted".
6032 Restoring the new configuration "undeletes" any that are in it.
6034 Save their current buffers in their height fields, since we may
6035 need it later, if a buffer saved in the configuration is now
6037 delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6039 for (k
= 0; k
< saved_windows
->size
; k
++)
6041 p
= SAVED_WINDOW_N (saved_windows
, k
);
6042 w
= XWINDOW (p
->window
);
6045 if (!NILP (p
->parent
))
6046 w
->parent
= SAVED_WINDOW_N (saved_windows
,
6047 XFASTINT (p
->parent
))->window
;
6051 if (!NILP (p
->prev
))
6053 w
->prev
= SAVED_WINDOW_N (saved_windows
,
6054 XFASTINT (p
->prev
))->window
;
6055 XWINDOW (w
->prev
)->next
= p
->window
;
6060 if (!NILP (w
->parent
))
6062 if (EQ (p
->total_cols
, XWINDOW (w
->parent
)->total_cols
))
6064 XWINDOW (w
->parent
)->vchild
= p
->window
;
6065 XWINDOW (w
->parent
)->hchild
= Qnil
;
6069 XWINDOW (w
->parent
)->hchild
= p
->window
;
6070 XWINDOW (w
->parent
)->vchild
= Qnil
;
6075 /* If we squirreled away the buffer in the window's height,
6077 if (BUFFERP (w
->total_lines
))
6078 w
->buffer
= w
->total_lines
;
6079 w
->left_col
= p
->left_col
;
6080 w
->top_line
= p
->top_line
;
6081 w
->total_cols
= p
->total_cols
;
6082 w
->total_lines
= p
->total_lines
;
6083 w
->hscroll
= p
->hscroll
;
6084 w
->min_hscroll
= p
->min_hscroll
;
6085 w
->display_table
= p
->display_table
;
6086 w
->orig_top_line
= p
->orig_top_line
;
6087 w
->orig_total_lines
= p
->orig_total_lines
;
6088 w
->left_margin_cols
= p
->left_margin_cols
;
6089 w
->right_margin_cols
= p
->right_margin_cols
;
6090 w
->left_fringe_width
= p
->left_fringe_width
;
6091 w
->right_fringe_width
= p
->right_fringe_width
;
6092 w
->fringes_outside_margins
= p
->fringes_outside_margins
;
6093 w
->scroll_bar_width
= p
->scroll_bar_width
;
6094 w
->vertical_scroll_bar_type
= p
->vertical_scroll_bar_type
;
6095 w
->dedicated
= p
->dedicated
;
6096 XSETFASTINT (w
->last_modified
, 0);
6097 XSETFASTINT (w
->last_overlay_modified
, 0);
6099 /* Reinstall the saved buffer and pointers into it. */
6100 if (NILP (p
->buffer
))
6101 w
->buffer
= p
->buffer
;
6104 if (!NILP (XBUFFER (p
->buffer
)->name
))
6105 /* If saved buffer is alive, install it. */
6107 w
->buffer
= p
->buffer
;
6108 w
->start_at_line_beg
= p
->start_at_line_beg
;
6109 set_marker_restricted (w
->start
, p
->start
, w
->buffer
);
6110 set_marker_restricted (w
->pointm
, p
->pointm
, w
->buffer
);
6111 Fset_marker (XBUFFER (w
->buffer
)->mark
,
6112 p
->mark
, w
->buffer
);
6114 /* As documented in Fcurrent_window_configuration, don't
6115 restore the location of point in the buffer which was
6116 current when the window configuration was recorded. */
6117 if (!EQ (p
->buffer
, new_current_buffer
)
6118 && XBUFFER (p
->buffer
) == current_buffer
)
6119 Fgoto_char (w
->pointm
);
6121 else if (NILP (w
->buffer
) || NILP (XBUFFER (w
->buffer
)->name
))
6122 /* Else unless window has a live buffer, get one. */
6124 w
->buffer
= Fcdr (Fcar (Vbuffer_alist
));
6125 /* This will set the markers to beginning of visible
6127 set_marker_restricted (w
->start
, make_number (0), w
->buffer
);
6128 set_marker_restricted (w
->pointm
, make_number (0),w
->buffer
);
6129 w
->start_at_line_beg
= Qt
;
6132 /* Keeping window's old buffer; make sure the markers
6135 /* Set window markers at start of visible range. */
6136 if (XMARKER (w
->start
)->buffer
== 0)
6137 set_marker_restricted (w
->start
, make_number (0),
6139 if (XMARKER (w
->pointm
)->buffer
== 0)
6140 set_marker_restricted_both (w
->pointm
, w
->buffer
,
6141 BUF_PT (XBUFFER (w
->buffer
)),
6142 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6143 w
->start_at_line_beg
= Qt
;
6148 FRAME_ROOT_WINDOW (f
) = data
->root_window
;
6149 /* Prevent "swapping out point" in the old selected window
6150 using the buffer that has been restored into it.
6151 We already swapped out point that from that window's old buffer. */
6152 selected_window
= Qnil
;
6154 /* Arrange *not* to restore point in the buffer that was
6155 current when the window configuration was saved. */
6156 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
))
6157 set_marker_restricted (XWINDOW (data
->current_window
)->pointm
,
6158 make_number (old_point
),
6159 XWINDOW (data
->current_window
)->buffer
);
6161 Fselect_window (data
->current_window
, Qnil
);
6162 XBUFFER (XWINDOW (selected_window
)->buffer
)->last_selected_window
6165 if (NILP (data
->focus_frame
)
6166 || (FRAMEP (data
->focus_frame
)
6167 && FRAME_LIVE_P (XFRAME (data
->focus_frame
))))
6168 Fredirect_frame_focus (frame
, data
->focus_frame
);
6170 #if 0 /* I don't understand why this is needed, and it causes problems
6171 when the frame's old selected window has been deleted. */
6172 if (f
!= selected_frame
&& FRAME_WINDOW_P (f
))
6173 do_switch_frame (WINDOW_FRAME (XWINDOW (data
->root_window
)),
6177 /* Set the screen height to the value it had before this function. */
6178 if (previous_frame_lines
!= FRAME_LINES (f
)
6179 || previous_frame_cols
!= FRAME_COLS (f
))
6180 change_frame_size (f
, previous_frame_lines
, previous_frame_cols
,
6182 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
6183 if (previous_frame_menu_bar_lines
!= FRAME_MENU_BAR_LINES (f
))
6184 x_set_menu_bar_lines (f
, make_number (previous_frame_menu_bar_lines
),
6186 #ifdef HAVE_WINDOW_SYSTEM
6187 if (previous_frame_tool_bar_lines
!= FRAME_TOOL_BAR_LINES (f
))
6188 x_set_tool_bar_lines (f
, make_number (previous_frame_tool_bar_lines
),
6193 /* Now, free glyph matrices in windows that were not reused. */
6194 for (i
= n
= 0; i
< n_leaf_windows
; ++i
)
6196 if (NILP (leaf_windows
[i
]->buffer
))
6198 /* Assert it's not reused as a combination. */
6199 xassert (NILP (leaf_windows
[i
]->hchild
)
6200 && NILP (leaf_windows
[i
]->vchild
));
6201 free_window_matrices (leaf_windows
[i
]);
6203 else if (EQ (leaf_windows
[i
]->buffer
, new_current_buffer
))
6211 /* Fselect_window will have made f the selected frame, so we
6212 reselect the proper frame here. Fhandle_switch_frame will change the
6213 selected window too, but that doesn't make the call to
6214 Fselect_window above totally superfluous; it still sets f's
6216 if (FRAME_LIVE_P (XFRAME (data
->selected_frame
)))
6217 do_switch_frame (data
->selected_frame
, 0, 0);
6219 if (! NILP (Vwindow_configuration_change_hook
)
6220 && ! NILP (Vrun_hooks
))
6221 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
6224 if (!NILP (new_current_buffer
))
6225 Fset_buffer (new_current_buffer
);
6227 /* Restore the minimum heights recorded in the configuration. */
6228 window_min_height
= XINT (data
->min_height
);
6229 window_min_width
= XINT (data
->min_width
);
6231 Vminibuf_scroll_window
= data
->minibuf_scroll_window
;
6232 minibuf_selected_window
= data
->minibuf_selected_window
;
6234 return (FRAME_LIVE_P (f
) ? Qt
: Qnil
);
6237 /* Mark all windows now on frame as deleted
6238 by setting their buffers to nil. */
6241 delete_all_subwindows (w
)
6242 register struct window
*w
;
6244 if (!NILP (w
->next
))
6245 delete_all_subwindows (XWINDOW (w
->next
));
6246 if (!NILP (w
->vchild
))
6247 delete_all_subwindows (XWINDOW (w
->vchild
));
6248 if (!NILP (w
->hchild
))
6249 delete_all_subwindows (XWINDOW (w
->hchild
));
6251 w
->total_lines
= w
->buffer
; /* See Fset_window_configuration for excuse. */
6253 if (!NILP (w
->buffer
))
6256 /* We set all three of these fields to nil, to make sure that we can
6257 distinguish this dead window from any live window. Live leaf
6258 windows will have buffer set, and combination windows will have
6259 vchild or hchild set. */
6264 Vwindow_list
= Qnil
;
6268 count_windows (window
)
6269 register struct window
*window
;
6271 register int count
= 1;
6272 if (!NILP (window
->next
))
6273 count
+= count_windows (XWINDOW (window
->next
));
6274 if (!NILP (window
->vchild
))
6275 count
+= count_windows (XWINDOW (window
->vchild
));
6276 if (!NILP (window
->hchild
))
6277 count
+= count_windows (XWINDOW (window
->hchild
));
6282 /* Fill vector FLAT with leaf windows under W, starting at index I.
6283 Value is last index + 1. */
6286 get_leaf_windows (w
, flat
, i
)
6288 struct window
**flat
;
6293 if (!NILP (w
->hchild
))
6294 i
= get_leaf_windows (XWINDOW (w
->hchild
), flat
, i
);
6295 else if (!NILP (w
->vchild
))
6296 i
= get_leaf_windows (XWINDOW (w
->vchild
), flat
, i
);
6300 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6307 /* Return a pointer to the glyph W's physical cursor is on. Value is
6308 null if W's current matrix is invalid, so that no meaningfull glyph
6312 get_phys_cursor_glyph (w
)
6315 struct glyph_row
*row
;
6316 struct glyph
*glyph
;
6318 if (w
->phys_cursor
.vpos
>= 0
6319 && w
->phys_cursor
.vpos
< w
->current_matrix
->nrows
6320 && (row
= MATRIX_ROW (w
->current_matrix
, w
->phys_cursor
.vpos
),
6322 && row
->used
[TEXT_AREA
] > w
->phys_cursor
.hpos
)
6323 glyph
= row
->glyphs
[TEXT_AREA
] + w
->phys_cursor
.hpos
;
6332 save_window_save (window
, vector
, i
)
6334 struct Lisp_Vector
*vector
;
6337 register struct saved_window
*p
;
6338 register struct window
*w
;
6339 register Lisp_Object tem
;
6341 for (;!NILP (window
); window
= w
->next
)
6343 p
= SAVED_WINDOW_N (vector
, i
);
6344 w
= XWINDOW (window
);
6346 XSETFASTINT (w
->temslot
, i
); i
++;
6348 p
->buffer
= w
->buffer
;
6349 p
->left_col
= w
->left_col
;
6350 p
->top_line
= w
->top_line
;
6351 p
->total_cols
= w
->total_cols
;
6352 p
->total_lines
= w
->total_lines
;
6353 p
->hscroll
= w
->hscroll
;
6354 p
->min_hscroll
= w
->min_hscroll
;
6355 p
->display_table
= w
->display_table
;
6356 p
->orig_top_line
= w
->orig_top_line
;
6357 p
->orig_total_lines
= w
->orig_total_lines
;
6358 p
->left_margin_cols
= w
->left_margin_cols
;
6359 p
->right_margin_cols
= w
->right_margin_cols
;
6360 p
->left_fringe_width
= w
->left_fringe_width
;
6361 p
->right_fringe_width
= w
->right_fringe_width
;
6362 p
->fringes_outside_margins
= w
->fringes_outside_margins
;
6363 p
->scroll_bar_width
= w
->scroll_bar_width
;
6364 p
->vertical_scroll_bar_type
= w
->vertical_scroll_bar_type
;
6365 p
->dedicated
= w
->dedicated
;
6366 if (!NILP (w
->buffer
))
6368 /* Save w's value of point in the window configuration.
6369 If w is the selected window, then get the value of point
6370 from the buffer; pointm is garbage in the selected window. */
6371 if (EQ (window
, selected_window
))
6373 p
->pointm
= Fmake_marker ();
6374 set_marker_both (p
->pointm
, w
->buffer
,
6375 BUF_PT (XBUFFER (w
->buffer
)),
6376 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6379 p
->pointm
= Fcopy_marker (w
->pointm
, Qnil
);
6381 p
->start
= Fcopy_marker (w
->start
, Qnil
);
6382 p
->start_at_line_beg
= w
->start_at_line_beg
;
6384 tem
= XBUFFER (w
->buffer
)->mark
;
6385 p
->mark
= Fcopy_marker (tem
, Qnil
);
6392 p
->start_at_line_beg
= Qnil
;
6395 if (NILP (w
->parent
))
6398 p
->parent
= XWINDOW (w
->parent
)->temslot
;
6403 p
->prev
= XWINDOW (w
->prev
)->temslot
;
6405 if (!NILP (w
->vchild
))
6406 i
= save_window_save (w
->vchild
, vector
, i
);
6407 if (!NILP (w
->hchild
))
6408 i
= save_window_save (w
->hchild
, vector
, i
);
6414 DEFUN ("current-window-configuration", Fcurrent_window_configuration
,
6415 Scurrent_window_configuration
, 0, 1, 0,
6416 doc
: /* Return an object representing the current window configuration of FRAME.
6417 If FRAME is nil or omitted, use the selected frame.
6418 This describes the number of windows, their sizes and current buffers,
6419 and for each displayed buffer, where display starts, and the positions of
6420 point and mark. An exception is made for point in the current buffer:
6421 its value is -not- saved.
6422 This also records the currently selected frame, and FRAME's focus
6423 redirection (see `redirect-frame-focus'). */)
6427 register Lisp_Object tem
;
6428 register int n_windows
;
6429 register struct save_window_data
*data
;
6430 register struct Lisp_Vector
*vec
;
6435 frame
= selected_frame
;
6436 CHECK_LIVE_FRAME (frame
);
6439 n_windows
= count_windows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6440 vec
= allocate_other_vector (VECSIZE (struct save_window_data
));
6441 data
= (struct save_window_data
*)vec
;
6443 XSETFASTINT (data
->frame_cols
, FRAME_COLS (f
));
6444 XSETFASTINT (data
->frame_lines
, FRAME_LINES (f
));
6445 XSETFASTINT (data
->frame_menu_bar_lines
, FRAME_MENU_BAR_LINES (f
));
6446 XSETFASTINT (data
->frame_tool_bar_lines
, FRAME_TOOL_BAR_LINES (f
));
6447 data
->selected_frame
= selected_frame
;
6448 data
->current_window
= FRAME_SELECTED_WINDOW (f
);
6449 XSETBUFFER (data
->current_buffer
, current_buffer
);
6450 data
->minibuf_scroll_window
= minibuf_level
> 0 ? Vminibuf_scroll_window
: Qnil
;
6451 data
->minibuf_selected_window
= minibuf_level
> 0 ? minibuf_selected_window
: Qnil
;
6452 data
->root_window
= FRAME_ROOT_WINDOW (f
);
6453 data
->focus_frame
= FRAME_FOCUS_FRAME (f
);
6454 XSETINT (data
->min_height
, window_min_height
);
6455 XSETINT (data
->min_width
, window_min_width
);
6456 tem
= Fmake_vector (make_number (n_windows
), Qnil
);
6457 data
->saved_windows
= tem
;
6458 for (i
= 0; i
< n_windows
; i
++)
6459 XVECTOR (tem
)->contents
[i
]
6460 = Fmake_vector (make_number (VECSIZE (struct saved_window
)), Qnil
);
6461 save_window_save (FRAME_ROOT_WINDOW (f
), XVECTOR (tem
), 0);
6462 XSETWINDOW_CONFIGURATION (tem
, data
);
6466 DEFUN ("save-window-excursion", Fsave_window_excursion
, Ssave_window_excursion
,
6468 doc
: /* Execute BODY, preserving window sizes and contents.
6469 Return the value of the last form in BODY.
6470 Restore which buffer appears in which window, where display starts,
6471 and the value of point and mark for each window.
6472 Also restore the choice of selected window.
6473 Also restore which buffer is current.
6474 Does not restore the value of point in current buffer.
6475 usage: (save-window-excursion BODY ...) */)
6479 register Lisp_Object val
;
6480 register int count
= SPECPDL_INDEX ();
6482 record_unwind_protect (Fset_window_configuration
,
6483 Fcurrent_window_configuration (Qnil
));
6484 val
= Fprogn (args
);
6485 return unbind_to (count
, val
);
6490 /***********************************************************************
6492 ***********************************************************************/
6498 Lisp_Object tail
= Qnil
;
6499 Lisp_Object result
= Qnil
;
6506 if (!NILP (w
->hchild
))
6507 wn
= Fcons (Qnil
, Fcons (Fwindow_edges (wn
),
6508 window_tree (XWINDOW (w
->hchild
))));
6509 else if (!NILP (w
->vchild
))
6510 wn
= Fcons (Qt
, Fcons (Fwindow_edges (wn
),
6511 window_tree (XWINDOW (w
->vchild
))));
6515 result
= tail
= Fcons (wn
, Qnil
);
6519 XSETCDR (tail
, Fcons (wn
, Qnil
));
6523 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6531 DEFUN ("window-tree", Fwindow_tree
, Swindow_tree
,
6533 doc
: /* Return the window tree for frame FRAME.
6535 The return value is a list of the form (ROOT MINI), where ROOT
6536 represents the window tree of the frame's root window, and MINI
6537 is the frame's minibuffer window.
6539 If the root window is not split, ROOT is the root window itself.
6540 Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a
6541 horizontal split, and t for a vertical split, EDGES gives the combined
6542 size and position of the subwindows in the split, and the rest of the
6543 elements are the subwindows in the split. Each of the subwindows may
6544 again be a window or a list representing a window split, and so on.
6545 EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'.
6547 If FRAME is nil or omitted, return information on the currently
6555 frame
= selected_frame
;
6557 CHECK_FRAME (frame
);
6560 if (!FRAME_LIVE_P (f
))
6563 return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6567 /***********************************************************************
6569 ***********************************************************************/
6571 DEFUN ("set-window-margins", Fset_window_margins
, Sset_window_margins
,
6573 doc
: /* Set width of marginal areas of window WINDOW.
6574 If WINDOW is nil, set margins of the currently selected window.
6575 Second arg LEFT-WIDTH specifies the number of character cells to
6576 reserve for the left marginal area. Optional third arg RIGHT-WIDTH
6577 does the same for the right marginal area. A nil width parameter
6578 means no margin. */)
6579 (window
, left_width
, right_width
)
6580 Lisp_Object window
, left_width
, right_width
;
6582 struct window
*w
= decode_window (window
);
6584 /* Translate negative or zero widths to nil.
6585 Margins that are too wide have to be checked elsewhere. */
6587 if (!NILP (left_width
))
6589 CHECK_NUMBER (left_width
);
6590 if (XINT (left_width
) <= 0)
6594 if (!NILP (right_width
))
6596 CHECK_NUMBER (right_width
);
6597 if (XINT (right_width
) <= 0)
6601 if (!EQ (w
->left_margin_cols
, left_width
)
6602 || !EQ (w
->right_margin_cols
, right_width
))
6604 w
->left_margin_cols
= left_width
;
6605 w
->right_margin_cols
= right_width
;
6607 adjust_window_margins (w
);
6609 ++windows_or_buffers_changed
;
6610 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6617 DEFUN ("window-margins", Fwindow_margins
, Swindow_margins
,
6619 doc
: /* Get width of marginal areas of window WINDOW.
6620 If WINDOW is omitted or nil, use the currently selected window.
6621 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
6622 If a marginal area does not exist, its width will be returned
6627 struct window
*w
= decode_window (window
);
6628 return Fcons (w
->left_margin_cols
, w
->right_margin_cols
);
6633 /***********************************************************************
6635 ***********************************************************************/
6637 DEFUN ("set-window-fringes", Fset_window_fringes
, Sset_window_fringes
,
6639 doc
: /* Set the fringe widths of window WINDOW.
6640 If WINDOW is nil, set the fringe widths of the currently selected
6642 Second arg LEFT-WIDTH specifies the number of pixels to reserve for
6643 the left fringe. Optional third arg RIGHT-WIDTH specifies the right
6644 fringe width. If a fringe width arg is nil, that means to use the
6645 frame's default fringe width. Default fringe widths can be set with
6646 the command `set-fringe-style'.
6647 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
6648 outside of the display margins. By default, fringes are drawn between
6649 display marginal areas and the text area. */)
6650 (window
, left_width
, right_width
, outside_margins
)
6651 Lisp_Object window
, left_width
, right_width
, outside_margins
;
6653 struct window
*w
= decode_window (window
);
6655 if (!NILP (left_width
))
6656 CHECK_NATNUM (left_width
);
6657 if (!NILP (right_width
))
6658 CHECK_NATNUM (right_width
);
6660 /* Do nothing on a tty. */
6661 if (FRAME_WINDOW_P (WINDOW_XFRAME (w
))
6662 && (!EQ (w
->left_fringe_width
, left_width
)
6663 || !EQ (w
->right_fringe_width
, right_width
)
6664 || !EQ (w
->fringes_outside_margins
, outside_margins
)))
6666 w
->left_fringe_width
= left_width
;
6667 w
->right_fringe_width
= right_width
;
6668 w
->fringes_outside_margins
= outside_margins
;
6670 adjust_window_margins (w
);
6672 clear_glyph_matrix (w
->current_matrix
);
6673 w
->window_end_valid
= Qnil
;
6675 ++windows_or_buffers_changed
;
6676 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6683 DEFUN ("window-fringes", Fwindow_fringes
, Swindow_fringes
,
6685 doc
: /* Get width of fringes of window WINDOW.
6686 If WINDOW is omitted or nil, use the currently selected window.
6687 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */)
6691 struct window
*w
= decode_window (window
);
6693 return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w
)),
6694 Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w
)),
6695 Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
6696 ? Qt
: Qnil
), Qnil
)));
6701 /***********************************************************************
6703 ***********************************************************************/
6705 DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars
, Sset_window_scroll_bars
,
6707 doc
: /* Set width and type of scroll bars of window WINDOW.
6708 If window is nil, set scroll bars of the currently selected window.
6709 Second parameter WIDTH specifies the pixel width for the scroll bar;
6710 this is automatically adjusted to a multiple of the frame column width.
6711 Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
6712 bar: left, right, or nil.
6713 If WIDTH is nil, use the frame's scroll-bar width.
6714 If VERTICAL-TYPE is t, use the frame's scroll-bar type.
6715 Fourth parameter HORIZONTAL-TYPE is currently unused. */)
6716 (window
, width
, vertical_type
, horizontal_type
)
6717 Lisp_Object window
, width
, vertical_type
, horizontal_type
;
6719 struct window
*w
= decode_window (window
);
6723 CHECK_NATNUM (width
);
6725 if (XINT (width
) == 0)
6726 vertical_type
= Qnil
;
6729 if (!(EQ (vertical_type
, Qnil
)
6730 || EQ (vertical_type
, Qleft
)
6731 || EQ (vertical_type
, Qright
)
6732 || EQ (vertical_type
, Qt
)))
6733 error ("Invalid type of vertical scroll bar");
6735 if (!EQ (w
->scroll_bar_width
, width
)
6736 || !EQ (w
->vertical_scroll_bar_type
, vertical_type
))
6738 w
->scroll_bar_width
= width
;
6739 w
->vertical_scroll_bar_type
= vertical_type
;
6741 adjust_window_margins (w
);
6743 clear_glyph_matrix (w
->current_matrix
);
6744 w
->window_end_valid
= Qnil
;
6746 ++windows_or_buffers_changed
;
6747 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6754 DEFUN ("window-scroll-bars", Fwindow_scroll_bars
, Swindow_scroll_bars
,
6756 doc
: /* Get width and type of scroll bars of window WINDOW.
6757 If WINDOW is omitted or nil, use the currently selected window.
6758 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
6759 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
6764 struct window
*w
= decode_window (window
);
6765 return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6766 ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6767 : WINDOW_SCROLL_BAR_AREA_WIDTH (w
))),
6768 Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w
)),
6769 Fcons (w
->vertical_scroll_bar_type
,
6770 Fcons (Qnil
, Qnil
))));
6775 /***********************************************************************
6777 ***********************************************************************/
6779 DEFUN ("window-vscroll", Fwindow_vscroll
, Swindow_vscroll
, 0, 2, 0,
6780 doc
: /* Return the amount by which WINDOW is scrolled vertically.
6781 Use the selected window if WINDOW is nil or omitted.
6782 Normally, value is a multiple of the canonical character height of WINDOW;
6783 optional second arg PIXELS-P means value is measured in pixels. */)
6785 Lisp_Object window
, pixels_p
;
6792 window
= selected_window
;
6794 CHECK_WINDOW (window
);
6795 w
= XWINDOW (window
);
6796 f
= XFRAME (w
->frame
);
6798 if (FRAME_WINDOW_P (f
))
6799 result
= (NILP (pixels_p
)
6800 ? FRAME_CANON_Y_FROM_PIXEL_Y (f
, -w
->vscroll
)
6801 : make_number (-w
->vscroll
));
6803 result
= make_number (0);
6808 DEFUN ("set-window-vscroll", Fset_window_vscroll
, Sset_window_vscroll
,
6810 doc
: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
6811 WINDOW nil means use the selected window. Normally, VSCROLL is a
6812 non-negative multiple of the canonical character height of WINDOW;
6813 optional third arg PIXELS-P non-nil means that VSCROLL is in pixels.
6814 If PIXELS-P is nil, VSCROLL may have to be rounded so that it
6815 corresponds to an integral number of pixels. The return value is the
6816 result of this rounding.
6817 If PIXELS-P is non-nil, the return value is VSCROLL. */)
6818 (window
, vscroll
, pixels_p
)
6819 Lisp_Object window
, vscroll
, pixels_p
;
6825 window
= selected_window
;
6827 CHECK_WINDOW (window
);
6828 CHECK_NUMBER_OR_FLOAT (vscroll
);
6830 w
= XWINDOW (window
);
6831 f
= XFRAME (w
->frame
);
6833 if (FRAME_WINDOW_P (f
))
6835 int old_dy
= w
->vscroll
;
6837 w
->vscroll
= - (NILP (pixels_p
)
6838 ? FRAME_LINE_HEIGHT (f
) * XFLOATINT (vscroll
)
6839 : XFLOATINT (vscroll
));
6840 w
->vscroll
= min (w
->vscroll
, 0);
6842 if (w
->vscroll
!= old_dy
)
6844 /* Adjust glyph matrix of the frame if the virtual display
6845 area becomes larger than before. */
6846 if (w
->vscroll
< 0 && w
->vscroll
< old_dy
)
6849 /* Prevent redisplay shortcuts. */
6850 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
6854 return Fwindow_vscroll (window
, pixels_p
);
6858 /* Call FN for all leaf windows on frame F. FN is called with the
6859 first argument being a pointer to the leaf window, and with
6860 additional argument USER_DATA. Stops when FN returns 0. */
6863 foreach_window (f
, fn
, user_data
)
6865 int (* fn
) P_ ((struct window
*, void *));
6868 /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */
6869 if (WINDOWP (FRAME_ROOT_WINDOW (f
)))
6870 foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f
)), fn
, user_data
);
6874 /* Helper function for foreach_window. Call FN for all leaf windows
6875 reachable from W. FN is called with the first argument being a
6876 pointer to the leaf window, and with additional argument USER_DATA.
6877 Stop when FN returns 0. Value is 0 if stopped by FN. */
6880 foreach_window_1 (w
, fn
, user_data
)
6882 int (* fn
) P_ ((struct window
*, void *));
6887 for (cont
= 1; w
&& cont
;)
6889 if (!NILP (w
->hchild
))
6890 cont
= foreach_window_1 (XWINDOW (w
->hchild
), fn
, user_data
);
6891 else if (!NILP (w
->vchild
))
6892 cont
= foreach_window_1 (XWINDOW (w
->vchild
), fn
, user_data
);
6894 cont
= fn (w
, user_data
);
6896 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6903 /* Freeze or unfreeze the window start of W unless it is a
6904 mini-window or the selected window. FREEZE_P non-null means freeze
6905 the window start. */
6908 freeze_window_start (w
, freeze_p
)
6912 if (w
== XWINDOW (selected_window
)
6913 || MINI_WINDOW_P (w
)
6914 || (MINI_WINDOW_P (XWINDOW (selected_window
))
6915 && ! NILP (Vminibuf_scroll_window
)
6916 && w
== XWINDOW (Vminibuf_scroll_window
)))
6919 w
->frozen_window_start_p
= freeze_p
!= NULL
;
6924 /* Freeze or unfreeze the window starts of all leaf windows on frame
6925 F, except the selected window and a mini-window. FREEZE_P non-zero
6926 means freeze the window start. */
6929 freeze_window_starts (f
, freeze_p
)
6933 foreach_window (f
, freeze_window_start
, (void *) (freeze_p
? f
: 0));
6937 /***********************************************************************
6939 ***********************************************************************/
6941 /* Return 1 if window configurations C1 and C2
6942 describe the same state of affairs. This is used by Fequal. */
6945 compare_window_configurations (c1
, c2
, ignore_positions
)
6947 int ignore_positions
;
6949 register struct save_window_data
*d1
, *d2
;
6950 struct Lisp_Vector
*sw1
, *sw2
;
6953 CHECK_WINDOW_CONFIGURATION (c1
);
6954 CHECK_WINDOW_CONFIGURATION (c2
);
6956 d1
= (struct save_window_data
*) XVECTOR (c1
);
6957 d2
= (struct save_window_data
*) XVECTOR (c2
);
6958 sw1
= XVECTOR (d1
->saved_windows
);
6959 sw2
= XVECTOR (d2
->saved_windows
);
6961 if (! EQ (d1
->frame_cols
, d2
->frame_cols
))
6963 if (! EQ (d1
->frame_lines
, d2
->frame_lines
))
6965 if (! EQ (d1
->frame_menu_bar_lines
, d2
->frame_menu_bar_lines
))
6967 if (! EQ (d1
->selected_frame
, d2
->selected_frame
))
6969 /* Don't compare the current_window field directly.
6970 Instead see w1_is_current and w2_is_current, below. */
6971 if (! EQ (d1
->current_buffer
, d2
->current_buffer
))
6973 if (! ignore_positions
)
6975 if (! EQ (d1
->minibuf_scroll_window
, d2
->minibuf_scroll_window
))
6977 if (! EQ (d1
->minibuf_selected_window
, d2
->minibuf_selected_window
))
6980 /* Don't compare the root_window field.
6981 We don't require the two configurations
6982 to use the same window object,
6983 and the two root windows must be equivalent
6984 if everything else compares equal. */
6985 if (! EQ (d1
->focus_frame
, d2
->focus_frame
))
6987 if (! EQ (d1
->min_width
, d2
->min_width
))
6989 if (! EQ (d1
->min_height
, d2
->min_height
))
6992 /* Verify that the two confis have the same number of windows. */
6993 if (sw1
->size
!= sw2
->size
)
6996 for (i
= 0; i
< sw1
->size
; i
++)
6998 struct saved_window
*p1
, *p2
;
6999 int w1_is_current
, w2_is_current
;
7001 p1
= SAVED_WINDOW_N (sw1
, i
);
7002 p2
= SAVED_WINDOW_N (sw2
, i
);
7004 /* Verify that the current windows in the two
7005 configurations correspond to each other. */
7006 w1_is_current
= EQ (d1
->current_window
, p1
->window
);
7007 w2_is_current
= EQ (d2
->current_window
, p2
->window
);
7009 if (w1_is_current
!= w2_is_current
)
7012 /* Verify that the corresponding windows do match. */
7013 if (! EQ (p1
->buffer
, p2
->buffer
))
7015 if (! EQ (p1
->left_col
, p2
->left_col
))
7017 if (! EQ (p1
->top_line
, p2
->top_line
))
7019 if (! EQ (p1
->total_cols
, p2
->total_cols
))
7021 if (! EQ (p1
->total_lines
, p2
->total_lines
))
7023 if (! EQ (p1
->display_table
, p2
->display_table
))
7025 if (! EQ (p1
->parent
, p2
->parent
))
7027 if (! EQ (p1
->prev
, p2
->prev
))
7029 if (! ignore_positions
)
7031 if (! EQ (p1
->hscroll
, p2
->hscroll
))
7033 if (!EQ (p1
->min_hscroll
, p2
->min_hscroll
))
7035 if (! EQ (p1
->start_at_line_beg
, p2
->start_at_line_beg
))
7037 if (NILP (Fequal (p1
->start
, p2
->start
)))
7039 if (NILP (Fequal (p1
->pointm
, p2
->pointm
)))
7041 if (NILP (Fequal (p1
->mark
, p2
->mark
)))
7044 if (! EQ (p1
->left_margin_cols
, p2
->left_margin_cols
))
7046 if (! EQ (p1
->right_margin_cols
, p2
->right_margin_cols
))
7048 if (! EQ (p1
->left_fringe_width
, p2
->left_fringe_width
))
7050 if (! EQ (p1
->right_fringe_width
, p2
->right_fringe_width
))
7052 if (! EQ (p1
->fringes_outside_margins
, p2
->fringes_outside_margins
))
7054 if (! EQ (p1
->scroll_bar_width
, p2
->scroll_bar_width
))
7056 if (! EQ (p1
->vertical_scroll_bar_type
, p2
->vertical_scroll_bar_type
))
7063 DEFUN ("compare-window-configurations", Fcompare_window_configurations
,
7064 Scompare_window_configurations
, 2, 2, 0,
7065 doc
: /* Compare two window configurations as regards the structure of windows.
7066 This function ignores details such as the values of point and mark
7067 and scrolling positions. */)
7071 if (compare_window_configurations (x
, y
, 1))
7079 struct frame
*f
= make_terminal_frame ();
7080 XSETFRAME (selected_frame
, f
);
7081 Vterminal_frame
= selected_frame
;
7082 minibuf_window
= f
->minibuffer_window
;
7083 selected_window
= f
->selected_window
;
7084 last_nonminibuf_frame
= f
;
7086 window_initialized
= 1;
7092 Vwindow_list
= Qnil
;
7098 Qscroll_up
= intern ("scroll-up");
7099 staticpro (&Qscroll_up
);
7101 Qscroll_down
= intern ("scroll-down");
7102 staticpro (&Qscroll_down
);
7104 Qwindow_size_fixed
= intern ("window-size-fixed");
7105 staticpro (&Qwindow_size_fixed
);
7106 Fset (Qwindow_size_fixed
, Qnil
);
7108 staticpro (&Qwindow_configuration_change_hook
);
7109 Qwindow_configuration_change_hook
7110 = intern ("window-configuration-change-hook");
7112 Qwindowp
= intern ("windowp");
7113 staticpro (&Qwindowp
);
7115 Qwindow_configuration_p
= intern ("window-configuration-p");
7116 staticpro (&Qwindow_configuration_p
);
7118 Qwindow_live_p
= intern ("window-live-p");
7119 staticpro (&Qwindow_live_p
);
7121 Qtemp_buffer_show_hook
= intern ("temp-buffer-show-hook");
7122 staticpro (&Qtemp_buffer_show_hook
);
7124 staticpro (&Vwindow_list
);
7126 minibuf_selected_window
= Qnil
;
7127 staticpro (&minibuf_selected_window
);
7129 window_scroll_pixel_based_preserve_y
= -1;
7131 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function
,
7132 doc
: /* Non-nil means call as function to display a help buffer.
7133 The function is called with one argument, the buffer to be displayed.
7134 Used by `with-output-to-temp-buffer'.
7135 If this function is used, then it must do the entire job of showing
7136 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
7137 Vtemp_buffer_show_function
= Qnil
;
7139 DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function
,
7140 doc
: /* If non-nil, function to call to handle `display-buffer'.
7141 It will receive two args, the buffer and a flag which if non-nil means
7142 that the currently selected window is not acceptable.
7143 It should choose or create a window, display the specified buffer in it,
7144 and return the window.
7145 Commands such as `switch-to-buffer-other-window' and `find-file-other-window'
7146 work using this function. */);
7147 Vdisplay_buffer_function
= Qnil
;
7149 DEFVAR_LISP ("even-window-heights", &Veven_window_heights
,
7150 doc
: /* *If non-nil, `display-buffer' should even the window heights.
7151 If nil, `display-buffer' will leave the window configuration alone. */);
7152 Veven_window_heights
= Qt
;
7154 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window
,
7155 doc
: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
7156 Vminibuf_scroll_window
= Qnil
;
7158 DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows
,
7159 doc
: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
7160 If the minibuffer is active, the `minibuffer-scroll-window' mode line
7161 is displayed in the `mode-line' face. */);
7162 mode_line_in_non_selected_windows
= 1;
7164 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer
,
7165 doc
: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */);
7166 Vother_window_scroll_buffer
= Qnil
;
7168 DEFVAR_BOOL ("pop-up-frames", &pop_up_frames
,
7169 doc
: /* *Non-nil means `display-buffer' should make a separate frame. */);
7172 DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p
,
7173 doc
: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */);
7174 auto_window_vscroll_p
= 1;
7176 DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames
,
7177 doc
: /* *Non-nil means `display-buffer' should reuse frames.
7178 If the buffer in question is already displayed in a frame, raise that frame. */);
7179 display_buffer_reuse_frames
= 0;
7181 DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function
,
7182 doc
: /* Function to call to handle automatic new frame creation.
7183 It is called with no arguments and should return a newly created frame.
7185 A typical value might be `(lambda () (new-frame pop-up-frame-alist))'
7186 where `pop-up-frame-alist' would hold the default frame parameters. */);
7187 Vpop_up_frame_function
= Qnil
;
7189 DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names
,
7190 doc
: /* *List of buffer names that should have their own special frames.
7191 Displaying a buffer with `display-buffer' or `pop-to-buffer',
7192 if its name is in this list, makes a special frame for it
7193 using `special-display-function'. See also `special-display-regexps'.
7195 An element of the list can be a list instead of just a string.
7196 There are two ways to use a list as an element:
7197 (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)
7198 In the first case, the FRAME-PARAMETERS are pairs of the form
7199 \(PARAMETER . VALUE); these parameter values are used to create the frame.
7200 In the second case, FUNCTION is called with BUFFER as the first argument,
7201 followed by the OTHER-ARGS--it can display BUFFER in any way it likes.
7202 All this is done by the function found in `special-display-function'.
7204 If the specified frame parameters include (same-buffer . t), the
7205 buffer is displayed in the currently selected window. Otherwise, if
7206 they include (same-frame . t), the buffer is displayed in a new window
7207 in the currently selected frame.
7209 If this variable appears \"not to work\", because you add a name to it
7210 but that buffer still appears in the selected window, look at the
7211 values of `same-window-buffer-names' and `same-window-regexps'.
7212 Those variables take precedence over this one. */);
7213 Vspecial_display_buffer_names
= Qnil
;
7215 DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps
,
7216 doc
: /* *List of regexps saying which buffers should have their own special frames.
7217 When displaying a buffer with `display-buffer' or `pop-to-buffer',
7218 if any regexp in this list matches the buffer name, it makes a
7219 special frame for the buffer by calling `special-display-function'.
7221 An element of the list can be a list instead of just a string.
7222 There are two ways to use a list as an element:
7223 (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)
7224 In the first case, the FRAME-PARAMETERS are pairs of the form
7225 \(PARAMETER . VALUE); these parameter values are used to create the frame.
7226 In the second case, FUNCTION is called with BUFFER as the first argument,
7227 followed by the OTHER-ARGS--it can display the buffer in any way it likes.
7228 All this is done by the function found in `special-display-function'.
7230 If the specified frame parameters include (same-buffer . t), the
7231 buffer is displayed in the currently selected window. Otherwise, if
7232 they include (same-frame . t), the buffer is displayed in a new window
7233 in the currently selected frame.
7235 If this variable appears \"not to work\", because you add a regexp to it
7236 but the matching buffers still appear in the selected window, look at the
7237 values of `same-window-buffer-names' and `same-window-regexps'.
7238 Those variables take precedence over this one. */);
7239 Vspecial_display_regexps
= Qnil
;
7241 DEFVAR_LISP ("special-display-function", &Vspecial_display_function
,
7242 doc
: /* Function to call to make a new frame for a special buffer.
7243 It is called with two arguments, the buffer and optional buffer specific
7244 data, and should return a window displaying that buffer.
7245 The default value normally makes a separate frame for the buffer,
7246 using `special-display-frame-alist' to specify the frame parameters.
7247 But if the buffer specific data includes (same-buffer . t) then the
7248 buffer is displayed in the current selected window.
7249 Otherwise if it includes (same-frame . t) then the buffer is displayed in
7250 a new window in the currently selected frame.
7252 A buffer is special if it is listed in `special-display-buffer-names'
7253 or matches a regexp in `special-display-regexps'. */);
7254 Vspecial_display_function
= Qnil
;
7256 DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names
,
7257 doc
: /* *List of buffer names that should appear in the selected window.
7258 Displaying one of these buffers using `display-buffer' or `pop-to-buffer'
7259 switches to it in the selected window, rather than making it appear
7260 in some other window.
7262 An element of the list can be a cons cell instead of just a string.
7263 Then the car must be a string, which specifies the buffer name.
7264 This is for compatibility with `special-display-buffer-names';
7265 the cdr of the cons cell is ignored.
7267 See also `same-window-regexps'. */);
7268 Vsame_window_buffer_names
= Qnil
;
7270 DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps
,
7271 doc
: /* *List of regexps saying which buffers should appear in the selected window.
7272 If a buffer name matches one of these regexps, then displaying it
7273 using `display-buffer' or `pop-to-buffer' switches to it
7274 in the selected window, rather than making it appear in some other window.
7276 An element of the list can be a cons cell instead of just a string.
7277 Then the car must be a string, which specifies the buffer name.
7278 This is for compatibility with `special-display-buffer-names';
7279 the cdr of the cons cell is ignored.
7281 See also `same-window-buffer-names'. */);
7282 Vsame_window_regexps
= Qnil
;
7284 DEFVAR_BOOL ("pop-up-windows", &pop_up_windows
,
7285 doc
: /* *Non-nil means display-buffer should make new windows. */);
7288 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines
,
7289 doc
: /* *Number of lines of continuity when scrolling by screenfuls. */);
7290 next_screen_context_lines
= 2;
7292 DEFVAR_INT ("split-height-threshold", &split_height_threshold
,
7293 doc
: /* *A window must be at least this tall to be eligible for splitting
7294 by `display-buffer'. The value is in line units.
7295 If there is only one window, it is split regardless of this value. */);
7296 split_height_threshold
= 500;
7298 DEFVAR_INT ("window-min-height", &window_min_height
,
7299 doc
: /* *Delete any window less than this tall (including its mode line).
7300 The value is in line units. */);
7301 window_min_height
= 4;
7303 DEFVAR_INT ("window-min-width", &window_min_width
,
7304 doc
: /* *Delete any window less than this wide (measured in characters). */);
7305 window_min_width
= 10;
7307 DEFVAR_LISP ("scroll-preserve-screen-position",
7308 &Vscroll_preserve_screen_position
,
7309 doc
: /* *Controls if scroll commands move point to keep its screen line unchanged.
7310 A value of nil means point does not keep its screen position except
7311 at the scroll margin or window boundary respectively.
7312 A value of t means point keeps its screen position if the scroll
7313 command moved it vertically out of the window, e.g. when scrolling
7315 Any other value means point always keeps its screen position. */);
7316 Vscroll_preserve_screen_position
= Qnil
;
7318 DEFVAR_LISP ("window-configuration-change-hook",
7319 &Vwindow_configuration_change_hook
,
7320 doc
: /* Functions to call when window configuration changes.
7321 The selected frame is the one whose configuration has changed. */);
7322 Vwindow_configuration_change_hook
= Qnil
;
7324 defsubr (&Sselected_window
);
7325 defsubr (&Sminibuffer_window
);
7326 defsubr (&Swindow_minibuffer_p
);
7327 defsubr (&Swindowp
);
7328 defsubr (&Swindow_live_p
);
7329 defsubr (&Spos_visible_in_window_p
);
7330 defsubr (&Swindow_buffer
);
7331 defsubr (&Swindow_height
);
7332 defsubr (&Swindow_width
);
7333 defsubr (&Swindow_hscroll
);
7334 defsubr (&Sset_window_hscroll
);
7335 defsubr (&Swindow_redisplay_end_trigger
);
7336 defsubr (&Sset_window_redisplay_end_trigger
);
7337 defsubr (&Swindow_edges
);
7338 defsubr (&Swindow_pixel_edges
);
7339 defsubr (&Swindow_inside_edges
);
7340 defsubr (&Swindow_inside_pixel_edges
);
7341 defsubr (&Scoordinates_in_window_p
);
7342 defsubr (&Swindow_at
);
7343 defsubr (&Swindow_point
);
7344 defsubr (&Swindow_start
);
7345 defsubr (&Swindow_end
);
7346 defsubr (&Sset_window_point
);
7347 defsubr (&Sset_window_start
);
7348 defsubr (&Swindow_dedicated_p
);
7349 defsubr (&Sset_window_dedicated_p
);
7350 defsubr (&Swindow_display_table
);
7351 defsubr (&Sset_window_display_table
);
7352 defsubr (&Snext_window
);
7353 defsubr (&Sprevious_window
);
7354 defsubr (&Sother_window
);
7355 defsubr (&Sget_lru_window
);
7356 defsubr (&Sget_largest_window
);
7357 defsubr (&Sget_buffer_window
);
7358 defsubr (&Sdelete_other_windows
);
7359 defsubr (&Sdelete_windows_on
);
7360 defsubr (&Sreplace_buffer_in_windows
);
7361 defsubr (&Sdelete_window
);
7362 defsubr (&Sset_window_buffer
);
7363 defsubr (&Sselect_window
);
7364 defsubr (&Sspecial_display_p
);
7365 defsubr (&Ssame_window_p
);
7366 defsubr (&Sdisplay_buffer
);
7367 defsubr (&Sforce_window_update
);
7368 defsubr (&Ssplit_window
);
7369 defsubr (&Senlarge_window
);
7370 defsubr (&Sshrink_window
);
7371 defsubr (&Sadjust_window_trailing_edge
);
7372 defsubr (&Sscroll_up
);
7373 defsubr (&Sscroll_down
);
7374 defsubr (&Sscroll_left
);
7375 defsubr (&Sscroll_right
);
7376 defsubr (&Sother_window_for_scrolling
);
7377 defsubr (&Sscroll_other_window
);
7378 defsubr (&Sminibuffer_selected_window
);
7379 defsubr (&Srecenter
);
7380 defsubr (&Swindow_text_height
);
7381 defsubr (&Smove_to_window_line
);
7382 defsubr (&Swindow_configuration_p
);
7383 defsubr (&Swindow_configuration_frame
);
7384 defsubr (&Sset_window_configuration
);
7385 defsubr (&Scurrent_window_configuration
);
7386 defsubr (&Ssave_window_excursion
);
7387 defsubr (&Swindow_tree
);
7388 defsubr (&Sset_window_margins
);
7389 defsubr (&Swindow_margins
);
7390 defsubr (&Sset_window_fringes
);
7391 defsubr (&Swindow_fringes
);
7392 defsubr (&Sset_window_scroll_bars
);
7393 defsubr (&Swindow_scroll_bars
);
7394 defsubr (&Swindow_vscroll
);
7395 defsubr (&Sset_window_vscroll
);
7396 defsubr (&Scompare_window_configurations
);
7397 defsubr (&Swindow_list
);
7403 initial_define_key (control_x_map
, '1', "delete-other-windows");
7404 initial_define_key (control_x_map
, '2', "split-window");
7405 initial_define_key (control_x_map
, '0', "delete-window");
7406 initial_define_key (control_x_map
, 'o', "other-window");
7407 initial_define_key (control_x_map
, '^', "enlarge-window");
7408 initial_define_key (control_x_map
, '<', "scroll-left");
7409 initial_define_key (control_x_map
, '>', "scroll-right");
7411 initial_define_key (global_map
, Ctl ('V'), "scroll-up");
7412 initial_define_key (meta_map
, Ctl ('V'), "scroll-other-window");
7413 initial_define_key (meta_map
, 'v', "scroll-down");
7415 initial_define_key (global_map
, Ctl('L'), "recenter");
7416 initial_define_key (meta_map
, 'r', "move-to-window-line");
7419 /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f
7420 (do not change this comment) */