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, 2007, 2008
5 Free Software Foundation, Inc.
7 This file is part of GNU Emacs.
9 GNU Emacs is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
14 GNU Emacs is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
35 #include "dispextern.h"
36 #include "blockinput.h"
37 #include "intervals.h"
38 #include "termhooks.h" /* For FRAME_TERMINAL. */
42 #endif /* HAVE_X_WINDOWS */
54 Lisp_Object Qwindowp
, Qwindow_live_p
, Qwindow_configuration_p
;
55 Lisp_Object Qdisplay_buffer
;
56 Lisp_Object Qscroll_up
, Qscroll_down
;
57 Lisp_Object Qwindow_size_fixed
;
59 extern Lisp_Object Qleft_margin
, Qright_margin
;
61 static int displayed_window_lines
P_ ((struct window
*));
62 static struct window
*decode_window
P_ ((Lisp_Object
));
63 static int count_windows
P_ ((struct window
*));
64 static int get_leaf_windows
P_ ((struct window
*, struct window
**, int));
65 static void window_scroll
P_ ((Lisp_Object
, int, int, int));
66 static void window_scroll_pixel_based
P_ ((Lisp_Object
, int, int, int));
67 static void window_scroll_line_based
P_ ((Lisp_Object
, int, int, int));
68 static int window_min_size_1
P_ ((struct window
*, int, int));
69 static int window_min_size_2
P_ ((struct window
*, int, int));
70 static int window_min_size
P_ ((struct window
*, int, int, int, int *));
71 static void size_window
P_ ((Lisp_Object
, int, int, int, int, int));
72 static int freeze_window_start
P_ ((struct window
*, void *));
73 static int window_fixed_size_p
P_ ((struct window
*, int, int));
74 static void enlarge_window
P_ ((Lisp_Object
, int, int));
75 static Lisp_Object window_list
P_ ((void));
76 static int add_window_to_list
P_ ((struct window
*, void *));
77 static int candidate_window_p
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
79 static Lisp_Object next_window
P_ ((Lisp_Object
, Lisp_Object
,
81 static void decode_next_window_args
P_ ((Lisp_Object
*, Lisp_Object
*,
83 static int foreach_window_1
P_ ((struct window
*,
84 int (* fn
) (struct window
*, void *),
86 static Lisp_Object window_list_1
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
88 /* This is the window in which the terminal's cursor should
89 be left when nothing is being done with it. This must
90 always be a leaf window, and its buffer is selected by
91 the top level editing loop at the end of each command.
93 This value is always the same as
94 FRAME_SELECTED_WINDOW (selected_frame). */
96 Lisp_Object selected_window
;
98 /* A list of all windows for use by next_window and Fwindow_list.
99 Functions creating or deleting windows should invalidate this cache
100 by setting it to nil. */
102 Lisp_Object Vwindow_list
;
104 /* The mini-buffer window of the selected frame.
105 Note that you cannot test for mini-bufferness of an arbitrary window
106 by comparing against this; but you can test for mini-bufferness of
107 the selected window. */
109 Lisp_Object minibuf_window
;
111 /* Non-nil means it is the window whose mode line should be
112 shown as the selected window when the minibuffer is selected. */
114 Lisp_Object minibuf_selected_window
;
116 /* Non-nil means it is the window for C-M-v to scroll
117 when the mini-buffer is selected. */
119 Lisp_Object Vminibuf_scroll_window
;
121 /* Non-nil means this is the buffer whose window C-M-v should scroll. */
123 Lisp_Object Vother_window_scroll_buffer
;
125 /* Non-nil means it's function to call to display temp buffers. */
127 Lisp_Object Vtemp_buffer_show_function
;
129 /* Non-zero means line and page scrolling on tall lines (with images)
130 does partial scrolling by modifying window-vscroll. */
132 int auto_window_vscroll_p
;
134 /* Non-zero means to use mode-line-inactive face in all windows but the
135 selected-window and the minibuffer-scroll-window when the
136 minibuffer is active. */
137 int mode_line_in_non_selected_windows
;
139 /* If a window gets smaller than either of these, it is removed. */
141 EMACS_INT window_min_height
;
142 EMACS_INT window_min_width
;
144 /* Hook run at end of temp_output_buffer_show. */
146 Lisp_Object Qtemp_buffer_show_hook
;
148 /* Number of lines of continuity in scrolling by screenfuls. */
150 EMACS_INT next_screen_context_lines
;
152 /* Incremented for each window created. */
154 static int sequence_number
;
156 /* Nonzero after init_window_once has finished. */
158 static int window_initialized
;
160 /* Hook to run when window config changes. */
162 static Lisp_Object Qwindow_configuration_change_hook
;
163 static Lisp_Object Vwindow_configuration_change_hook
;
165 /* Non-nil means scroll commands try to put point
166 at the same screen height as previously. */
168 Lisp_Object Vscroll_preserve_screen_position
;
170 /* Non-nil means that text is inserted before window's markers. */
172 Lisp_Object Vwindow_point_insertion_type
;
174 /* Incremented by 1 whenever a window is deleted. */
176 int window_deletion_count
;
178 /* Used by the function window_scroll_pixel_based */
180 static int window_scroll_pixel_based_preserve_x
;
181 static int window_scroll_pixel_based_preserve_y
;
183 /* Same for window_scroll_line_based. */
185 static int window_scroll_preserve_hpos
;
186 static int window_scroll_preserve_vpos
;
188 #if 0 /* This isn't used anywhere. */
189 /* Nonzero means we can split a frame even if it is "unsplittable". */
190 static int inhibit_frame_unsplittable
;
193 extern EMACS_INT scroll_margin
;
195 extern Lisp_Object Qwindow_scroll_functions
, Vwindow_scroll_functions
;
197 DEFUN ("windowp", Fwindowp
, Swindowp
, 1, 1, 0,
198 doc
: /* Returns t if OBJECT is a window. */)
202 return WINDOWP (object
) ? Qt
: Qnil
;
205 DEFUN ("window-live-p", Fwindow_live_p
, Swindow_live_p
, 1, 1, 0,
206 doc
: /* Returns t if OBJECT is a window which is currently visible. */)
210 return WINDOW_LIVE_P (object
) ? Qt
: Qnil
;
217 register struct window
*p
;
219 p
= allocate_window ();
221 XSETFASTINT (p
->sequence_number
, sequence_number
);
222 XSETFASTINT (p
->left_col
, 0);
223 XSETFASTINT (p
->top_line
, 0);
224 XSETFASTINT (p
->total_lines
, 0);
225 XSETFASTINT (p
->total_cols
, 0);
226 XSETFASTINT (p
->hscroll
, 0);
227 XSETFASTINT (p
->min_hscroll
, 0);
228 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
229 p
->start
= Fmake_marker ();
230 p
->pointm
= Fmake_marker ();
231 XSETFASTINT (p
->use_time
, 0);
233 p
->display_table
= Qnil
;
235 p
->window_parameters
= Qnil
;
236 p
->pseudo_window_p
= 0;
237 bzero (&p
->cursor
, sizeof (p
->cursor
));
238 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
239 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
240 p
->desired_matrix
= p
->current_matrix
= 0;
241 p
->nrows_scale_factor
= p
->ncols_scale_factor
= 1;
242 p
->phys_cursor_type
= -1;
243 p
->phys_cursor_width
= -1;
244 p
->must_be_updated_p
= 0;
245 XSETFASTINT (p
->window_end_vpos
, 0);
246 XSETFASTINT (p
->window_end_pos
, 0);
247 p
->window_end_valid
= Qnil
;
250 XSETFASTINT (p
->last_point
, 0);
251 p
->frozen_window_start_p
= 0;
252 p
->last_cursor_off_p
= p
->cursor_off_p
= 0;
253 p
->left_margin_cols
= Qnil
;
254 p
->right_margin_cols
= Qnil
;
255 p
->left_fringe_width
= Qnil
;
256 p
->right_fringe_width
= Qnil
;
257 p
->fringes_outside_margins
= Qnil
;
258 p
->scroll_bar_width
= Qnil
;
259 p
->vertical_scroll_bar_type
= Qt
;
260 p
->resize_proportionally
= Qnil
;
266 DEFUN ("selected-window", Fselected_window
, Sselected_window
, 0, 0, 0,
267 doc
: /* Return the window that the cursor now appears in and commands apply to. */)
270 return selected_window
;
273 DEFUN ("minibuffer-window", Fminibuffer_window
, Sminibuffer_window
, 0, 1, 0,
274 doc
: /* Return the window used now for minibuffers.
275 If the optional argument FRAME is specified, return the minibuffer window
276 used by that frame. */)
281 frame
= selected_frame
;
282 CHECK_LIVE_FRAME (frame
);
283 return FRAME_MINIBUF_WINDOW (XFRAME (frame
));
286 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p
, Swindow_minibuffer_p
, 0, 1, 0,
287 doc
: /* Returns non-nil if WINDOW is a minibuffer window.
288 WINDOW defaults to the selected window. */)
292 struct window
*w
= decode_window (window
);
293 return MINI_WINDOW_P (w
) ? Qt
: Qnil
;
297 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p
,
298 Spos_visible_in_window_p
, 0, 3, 0,
299 doc
: /* Return non-nil if position POS is currently on the frame in WINDOW.
300 Return nil if that position is scrolled vertically out of view.
301 If a character is only partially visible, nil is returned, unless the
302 optional argument PARTIALLY is non-nil.
303 If POS is only out of view because of horizontal scrolling, return non-nil.
304 If POS is t, it specifies the position of the last visible glyph in WINDOW.
305 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
307 If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,
308 return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]),
309 where X and Y are the pixel coordinates relative to the top left corner
310 of the window. The remaining elements are omitted if the character after
311 POS is fully visible; otherwise, RTOP and RBOT are the number of pixels
312 off-window at the top and bottom of the row, ROWH is the height of the
313 display row, and VPOS is the row number (0-based) containing POS. */)
314 (pos
, window
, partially
)
315 Lisp_Object pos
, window
, partially
;
317 register struct window
*w
;
319 register struct buffer
*buf
;
321 Lisp_Object in_window
= Qnil
;
322 int rtop
, rbot
, rowh
, vpos
, fully_p
= 1;
325 w
= decode_window (window
);
326 buf
= XBUFFER (w
->buffer
);
327 SET_TEXT_POS_FROM_MARKER (top
, w
->start
);
331 else if (!NILP (pos
))
333 CHECK_NUMBER_COERCE_MARKER (pos
);
336 else if (w
== XWINDOW (selected_window
))
339 posint
= XMARKER (w
->pointm
)->charpos
;
341 /* If position is above window start or outside buffer boundaries,
342 or if window start is out of range, position is not visible. */
344 || (posint
>= CHARPOS (top
) && posint
<= BUF_ZV (buf
)))
345 && CHARPOS (top
) >= BUF_BEGV (buf
)
346 && CHARPOS (top
) <= BUF_ZV (buf
)
347 && pos_visible_p (w
, posint
, &x
, &y
, &rtop
, &rbot
, &rowh
, &vpos
)
348 && (fully_p
= !rtop
&& !rbot
, (!NILP (partially
) || fully_p
)))
351 if (!NILP (in_window
) && !NILP (partially
))
353 Lisp_Object part
= Qnil
;
355 part
= list4 (make_number (rtop
), make_number (rbot
),
356 make_number (rowh
), make_number (vpos
));
357 in_window
= Fcons (make_number (x
),
358 Fcons (make_number (y
), part
));
364 DEFUN ("window-line-height", Fwindow_line_height
,
365 Swindow_line_height
, 0, 2, 0,
366 doc
: /* Return height in pixels of text line LINE in window WINDOW.
367 If WINDOW is nil or omitted, use selected window.
369 Return height of current line if LINE is omitted or nil. Return height of
370 header or mode line if LINE is `header-line' and `mode-line'.
371 Otherwise, LINE is a text line number starting from 0. A negative number
372 counts from the end of the window.
374 Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height
375 in pixels of the visible part of the line, VPOS and YPOS are the
376 vertical position in lines and pixels of the line, relative to the top
377 of the first text line, and OFFBOT is the number of off-window pixels at
378 the bottom of the text line. If there are off-window pixels at the top
379 of the (first) text line, YPOS is negative.
381 Return nil if window display is not up-to-date. In that case, use
382 `pos-visible-in-window-p' to obtain the information. */)
384 Lisp_Object line
, window
;
386 register struct window
*w
;
387 register struct buffer
*b
;
388 struct glyph_row
*row
, *end_row
;
389 int max_y
, crop
, i
, n
;
391 w
= decode_window (window
);
394 || w
->pseudo_window_p
)
397 CHECK_BUFFER (w
->buffer
);
398 b
= XBUFFER (w
->buffer
);
400 /* Fail if current matrix is not up-to-date. */
401 if (NILP (w
->window_end_valid
)
402 || current_buffer
->clip_changed
403 || current_buffer
->prevent_redisplay_optimizations_p
404 || XFASTINT (w
->last_modified
) < BUF_MODIFF (b
)
405 || XFASTINT (w
->last_overlay_modified
) < BUF_OVERLAY_MODIFF (b
))
411 if (i
< 0 || i
>= w
->current_matrix
->nrows
412 || (row
= MATRIX_ROW (w
->current_matrix
, i
), !row
->enabled_p
))
414 max_y
= window_text_bottom_y (w
);
418 if (EQ (line
, Qheader_line
))
420 if (!WINDOW_WANTS_HEADER_LINE_P (w
))
422 row
= MATRIX_HEADER_LINE_ROW (w
->current_matrix
);
425 return list4 (make_number (row
->height
),
426 make_number (0), make_number (0),
430 if (EQ (line
, Qmode_line
))
432 row
= MATRIX_MODE_LINE_ROW (w
->current_matrix
);
435 return list4 (make_number (row
->height
),
436 make_number (0), /* not accurate */
437 make_number (WINDOW_HEADER_LINE_HEIGHT (w
)
438 + window_text_bottom_y (w
)),
445 row
= MATRIX_FIRST_TEXT_ROW (w
->current_matrix
);
446 end_row
= MATRIX_BOTTOM_TEXT_ROW (w
->current_matrix
, w
);
447 max_y
= window_text_bottom_y (w
);
450 while ((n
< 0 || i
< n
)
451 && row
<= end_row
&& row
->enabled_p
452 && row
->y
+ row
->height
< max_y
)
455 if (row
> end_row
|| !row
->enabled_p
)
467 crop
= max (0, (row
->y
+ row
->height
) - max_y
);
468 return list4 (make_number (row
->height
+ min (0, row
->y
) - crop
),
470 make_number (row
->y
),
476 static struct window
*
477 decode_window (window
)
478 register Lisp_Object window
;
481 return XWINDOW (selected_window
);
483 CHECK_LIVE_WINDOW (window
);
484 return XWINDOW (window
);
487 static struct window
*
488 decode_any_window (window
)
489 register Lisp_Object window
;
492 return XWINDOW (selected_window
);
494 CHECK_WINDOW (window
);
495 return XWINDOW (window
);
498 DEFUN ("window-buffer", Fwindow_buffer
, Swindow_buffer
, 0, 1, 0,
499 doc
: /* Return the buffer that WINDOW is displaying.
500 WINDOW defaults to the selected window. */)
504 return decode_window (window
)->buffer
;
507 DEFUN ("window-height", Fwindow_height
, Swindow_height
, 0, 1, 0,
508 doc
: /* Return the number of lines in WINDOW (including its mode line).
509 WINDOW defaults to the selected window. */)
513 return decode_any_window (window
)->total_lines
;
516 DEFUN ("window-width", Fwindow_width
, Swindow_width
, 0, 1, 0,
517 doc
: /* Return the number of display columns in WINDOW.
518 WINDOW defaults to the selected window.
520 Note: The return value is the number of columns available for text in
521 WINDOW. If you want to find out how many columns WINDOW takes up, use
522 (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */)
526 return make_number (window_box_text_cols (decode_any_window (window
)));
529 DEFUN ("window-full-width-p", Fwindow_full_width_p
, Swindow_full_width_p
, 0, 1, 0,
530 doc
: /* Return t if WINDOW is as wide as its frame.
531 WINDOW defaults to the selected window. */)
535 return WINDOW_FULL_WIDTH_P (decode_any_window (window
)) ? Qt
: Qnil
;
538 DEFUN ("window-hscroll", Fwindow_hscroll
, Swindow_hscroll
, 0, 1, 0,
539 doc
: /* Return the number of columns by which WINDOW is scrolled from left margin.
540 WINDOW defaults to the selected window. */)
544 return decode_window (window
)->hscroll
;
547 DEFUN ("set-window-hscroll", Fset_window_hscroll
, Sset_window_hscroll
, 2, 2, 0,
548 doc
: /* Set number of columns WINDOW is scrolled from left margin to NCOL.
549 Return NCOL. NCOL should be zero or positive.
551 Note that if `automatic-hscrolling' is non-nil, you cannot scroll the
552 window so that the location of point moves off-window. */)
554 Lisp_Object window
, ncol
;
556 struct window
*w
= decode_window (window
);
560 hscroll
= max (0, XINT (ncol
));
562 /* Prevent redisplay shortcuts when changing the hscroll. */
563 if (XINT (w
->hscroll
) != hscroll
)
564 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
566 w
->hscroll
= make_number (hscroll
);
570 DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger
,
571 Swindow_redisplay_end_trigger
, 0, 1, 0,
572 doc
: /* Return WINDOW's redisplay end trigger value.
573 WINDOW defaults to the selected window.
574 See `set-window-redisplay-end-trigger' for more information. */)
578 return decode_window (window
)->redisplay_end_trigger
;
581 DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger
,
582 Sset_window_redisplay_end_trigger
, 2, 2, 0,
583 doc
: /* Set WINDOW's redisplay end trigger value to VALUE.
584 VALUE should be a buffer position (typically a marker) or nil.
585 If it is a buffer position, then if redisplay in WINDOW reaches a position
586 beyond VALUE, the functions in `redisplay-end-trigger-functions' are called
587 with two arguments: WINDOW, and the end trigger value.
588 Afterwards the end-trigger value is reset to nil. */)
590 register Lisp_Object window
, value
;
592 register struct window
*w
;
594 w
= decode_window (window
);
595 w
->redisplay_end_trigger
= value
;
599 DEFUN ("window-edges", Fwindow_edges
, Swindow_edges
, 0, 1, 0,
600 doc
: /* Return a list of the edge coordinates of WINDOW.
601 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
602 RIGHT is one more than the rightmost column occupied by WINDOW,
603 and BOTTOM is one more than the bottommost row occupied by WINDOW.
604 The edges include the space used by the window's scroll bar,
605 display margins, fringes, header line, and mode line, if it has them.
606 To get the edges of the actual text area, use `window-inside-edges'. */)
610 register struct window
*w
= decode_any_window (window
);
612 return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w
)),
613 Fcons (make_number (WINDOW_TOP_EDGE_LINE (w
)),
614 Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w
)),
615 Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w
)),
619 DEFUN ("window-pixel-edges", Fwindow_pixel_edges
, Swindow_pixel_edges
, 0, 1, 0,
620 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
621 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
622 RIGHT is one more than the rightmost x position occupied by WINDOW,
623 and BOTTOM is one more than the bottommost y position occupied by WINDOW.
624 The pixel edges include the space used by the window's scroll bar,
625 display margins, fringes, header line, and mode line, if it has them.
626 To get the edges of the actual text area, use `window-inside-pixel-edges'. */)
630 register struct window
*w
= decode_any_window (window
);
632 return Fcons (make_number (WINDOW_LEFT_EDGE_X (w
)),
633 Fcons (make_number (WINDOW_TOP_EDGE_Y (w
)),
634 Fcons (make_number (WINDOW_RIGHT_EDGE_X (w
)),
635 Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w
)),
639 DEFUN ("window-inside-edges", Fwindow_inside_edges
, Swindow_inside_edges
, 0, 1, 0,
640 doc
: /* Return a list of the edge coordinates of WINDOW.
641 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
642 RIGHT is one more than the rightmost column used by text in WINDOW,
643 and BOTTOM is one more than the bottommost row used by text in WINDOW.
644 The inside edges do not include the space used by the window's scroll bar,
645 display margins, fringes, header line, and/or mode line. */)
649 register struct window
*w
= decode_any_window (window
);
651 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w
)
652 + WINDOW_LEFT_MARGIN_COLS (w
)
653 + WINDOW_LEFT_FRINGE_COLS (w
)),
654 make_number (WINDOW_TOP_EDGE_LINE (w
)
655 + WINDOW_HEADER_LINE_LINES (w
)),
656 make_number (WINDOW_BOX_RIGHT_EDGE_COL (w
)
657 - WINDOW_RIGHT_MARGIN_COLS (w
)
658 - WINDOW_RIGHT_FRINGE_COLS (w
)),
659 make_number (WINDOW_BOTTOM_EDGE_LINE (w
)
660 - WINDOW_MODE_LINE_LINES (w
)));
663 DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges
, Swindow_inside_pixel_edges
, 0, 1, 0,
664 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
665 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
666 RIGHT is one more than the rightmost x position used by text in WINDOW,
667 and BOTTOM is one more than the bottommost y position used by text in WINDOW.
668 The inside edges do not include the space used by the window's scroll bar,
669 display margins, fringes, header line, and/or mode line. */)
673 register struct window
*w
= decode_any_window (window
);
675 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w
)
676 + WINDOW_LEFT_MARGIN_WIDTH (w
)
677 + WINDOW_LEFT_FRINGE_WIDTH (w
)),
678 make_number (WINDOW_TOP_EDGE_Y (w
)
679 + WINDOW_HEADER_LINE_HEIGHT (w
)),
680 make_number (WINDOW_BOX_RIGHT_EDGE_X (w
)
681 - WINDOW_RIGHT_MARGIN_WIDTH (w
)
682 - WINDOW_RIGHT_FRINGE_WIDTH (w
)),
683 make_number (WINDOW_BOTTOM_EDGE_Y (w
)
684 - WINDOW_MODE_LINE_HEIGHT (w
)));
687 /* Test if the character at column *X, row *Y is within window W.
688 If it is not, return ON_NOTHING;
689 if it is in the window's text area,
690 set *x and *y to its location relative to the upper left corner
693 if it is on the window's modeline, return ON_MODE_LINE;
694 if it is on the border between the window and its right sibling,
695 return ON_VERTICAL_BORDER.
696 if it is on a scroll bar,
697 return ON_SCROLL_BAR.
698 if it is on the window's top line, return ON_HEADER_LINE;
699 if it is in left or right fringe of the window,
700 return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y
701 to window-relative coordinates;
702 if it is in the marginal area to the left/right of the window,
703 return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y
704 to window-relative coordinates.
706 X and Y are frame relative pixel coordinates. */
708 static enum window_part
709 coordinates_in_window (w
, x
, y
)
710 register struct window
*w
;
713 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
714 int left_x
, right_x
, top_y
, bottom_y
;
715 enum window_part part
;
716 int ux
= FRAME_COLUMN_WIDTH (f
);
717 int x0
= WINDOW_LEFT_EDGE_X (w
);
718 int x1
= WINDOW_RIGHT_EDGE_X (w
);
719 /* The width of the area where the vertical line can be dragged.
720 (Between mode lines for instance. */
721 int grabbable_width
= ux
;
722 int lmargin_width
, rmargin_width
, text_left
, text_right
;
724 /* In what's below, we subtract 1 when computing right_x because we
725 want the rightmost pixel, which is given by left_pixel+width-1. */
726 if (w
->pseudo_window_p
)
729 right_x
= WINDOW_TOTAL_WIDTH (w
) - 1;
730 top_y
= WINDOW_TOP_EDGE_Y (w
);
731 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
735 left_x
= WINDOW_BOX_LEFT_EDGE_X (w
);
736 right_x
= WINDOW_BOX_RIGHT_EDGE_X (w
) - 1;
737 top_y
= WINDOW_TOP_EDGE_Y (w
);
738 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
741 /* Outside any interesting row? */
742 if (*y
< top_y
|| *y
>= bottom_y
)
745 /* On the mode line or header line? If it's near the start of
746 the mode or header line of window that's has a horizontal
747 sibling, say it's on the vertical line. That's to be able
748 to resize windows horizontally in case we're using toolkit
751 if (WINDOW_WANTS_MODELINE_P (w
)
752 && *y
>= bottom_y
- CURRENT_MODE_LINE_HEIGHT (w
))
756 header_vertical_border_check
:
757 /* We're somewhere on the mode line. We consider the place
758 between mode lines of horizontally adjacent mode lines
759 as the vertical border. If scroll bars on the left,
760 return the right window. */
761 if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w
)
762 || WINDOW_RIGHTMOST_P (w
))
764 if (!WINDOW_LEFTMOST_P (w
) && eabs (*x
- x0
) < grabbable_width
)
766 /* Convert X and Y to window relative coordinates.
767 Vertical border is at the left edge of window. */
768 *x
= max (0, *x
- x0
);
770 return ON_VERTICAL_BORDER
;
775 if (eabs (*x
- x1
) < grabbable_width
)
777 /* Convert X and Y to window relative coordinates.
778 Vertical border is at the right edge of window. */
779 *x
= min (x1
, *x
) - x0
;
781 return ON_VERTICAL_BORDER
;
785 if (*x
< x0
|| *x
>= x1
)
788 /* Convert X and Y to window relative coordinates.
789 Mode line starts at left edge of window. */
795 if (WINDOW_WANTS_HEADER_LINE_P (w
)
796 && *y
< top_y
+ CURRENT_HEADER_LINE_HEIGHT (w
))
798 part
= ON_HEADER_LINE
;
799 goto header_vertical_border_check
;
802 if (*x
< x0
|| *x
>= x1
)
805 /* Outside any interesting column? */
806 if (*x
< left_x
|| *x
> right_x
)
809 return ON_SCROLL_BAR
;
812 lmargin_width
= window_box_width (w
, LEFT_MARGIN_AREA
);
813 rmargin_width
= window_box_width (w
, RIGHT_MARGIN_AREA
);
815 text_left
= window_box_left (w
, TEXT_AREA
);
816 text_right
= text_left
+ window_box_width (w
, TEXT_AREA
);
818 if (FRAME_WINDOW_P (f
))
820 if (!w
->pseudo_window_p
821 && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w
)
822 && !WINDOW_RIGHTMOST_P (w
)
823 && (eabs (*x
- right_x
) < grabbable_width
))
825 /* Convert X and Y to window relative coordinates.
826 Vertical border is at the right edge of window. */
827 *x
= min (right_x
, *x
) - left_x
;
829 return ON_VERTICAL_BORDER
;
834 /* Need to say "*x > right_x" rather than >=, since on character
835 terminals, the vertical line's x coordinate is right_x. */
836 if (!w
->pseudo_window_p
837 && !WINDOW_RIGHTMOST_P (w
)
838 && *x
> right_x
- ux
)
840 /* On the border on the right side of the window? Assume that
841 this area begins at RIGHT_X minus a canonical char width. */
842 *x
= min (right_x
, *x
) - left_x
;
844 return ON_VERTICAL_BORDER
;
850 if (lmargin_width
> 0
851 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
852 ? (*x
>= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
))
853 : (*x
< left_x
+ lmargin_width
)))
856 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
857 *x
-= WINDOW_LEFT_FRINGE_WIDTH (w
);
859 return ON_LEFT_MARGIN
;
862 /* Convert X and Y to window-relative pixel coordinates. */
865 return ON_LEFT_FRINGE
;
868 if (*x
>= text_right
)
870 if (rmargin_width
> 0
871 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
872 ? (*x
< right_x
- WINDOW_RIGHT_FRINGE_WIDTH (w
))
873 : (*x
>= right_x
- rmargin_width
)))
875 *x
-= right_x
- rmargin_width
;
876 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
877 *x
+= WINDOW_RIGHT_FRINGE_WIDTH (w
);
879 return ON_RIGHT_MARGIN
;
882 /* Convert X and Y to window-relative pixel coordinates. */
883 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
885 return ON_RIGHT_FRINGE
;
888 /* Everything special ruled out - must be on text area */
895 DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p
,
896 Scoordinates_in_window_p
, 2, 2, 0,
897 doc
: /* Return non-nil if COORDINATES are in WINDOW.
898 COORDINATES is a cons of the form (X . Y), X and Y being distances
899 measured in characters from the upper-left corner of the frame.
900 \(0 . 0) denotes the character in the upper left corner of the
902 If COORDINATES are in the text portion of WINDOW,
903 the coordinates relative to the window are returned.
904 If they are in the mode line of WINDOW, `mode-line' is returned.
905 If they are in the top mode line of WINDOW, `header-line' is returned.
906 If they are in the left fringe of WINDOW, `left-fringe' is returned.
907 If they are in the right fringe of WINDOW, `right-fringe' is returned.
908 If they are on the border between WINDOW and its right sibling,
909 `vertical-line' is returned.
910 If they are in the windows's left or right marginal areas, `left-margin'\n\
911 or `right-margin' is returned. */)
912 (coordinates
, window
)
913 register Lisp_Object coordinates
, window
;
920 CHECK_WINDOW (window
);
921 w
= XWINDOW (window
);
922 f
= XFRAME (w
->frame
);
923 CHECK_CONS (coordinates
);
924 lx
= Fcar (coordinates
);
925 ly
= Fcdr (coordinates
);
926 CHECK_NUMBER_OR_FLOAT (lx
);
927 CHECK_NUMBER_OR_FLOAT (ly
);
928 x
= FRAME_PIXEL_X_FROM_CANON_X (f
, lx
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
929 y
= FRAME_PIXEL_Y_FROM_CANON_Y (f
, ly
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
931 switch (coordinates_in_window (w
, &x
, &y
))
937 /* X and Y are now window relative pixel coordinates. Convert
938 them to canonical char units before returning them. */
939 return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f
, x
),
940 FRAME_CANON_Y_FROM_PIXEL_Y (f
, y
));
945 case ON_VERTICAL_BORDER
:
946 return Qvertical_line
;
954 case ON_RIGHT_FRINGE
:
955 return Qright_fringe
;
960 case ON_RIGHT_MARGIN
:
961 return Qright_margin
;
964 /* Historically we are supposed to return nil in this case. */
973 /* Callback for foreach_window, used in window_from_coordinates.
974 Check if window W contains coordinates specified by USER_DATA which
975 is actually a pointer to a struct check_window_data CW.
977 Check if window W contains coordinates *CW->x and *CW->y. If it
978 does, return W in *CW->window, as Lisp_Object, and return in
979 *CW->part the part of the window under coordinates *X,*Y. Return
980 zero from this function to stop iterating over windows. */
982 struct check_window_data
986 enum window_part
*part
;
990 check_window_containing (w
, user_data
)
994 struct check_window_data
*cw
= (struct check_window_data
*) user_data
;
995 enum window_part found
;
998 found
= coordinates_in_window (w
, cw
->x
, cw
->y
);
999 if (found
!= ON_NOTHING
)
1002 XSETWINDOW (*cw
->window
, w
);
1010 /* Find the window containing frame-relative pixel position X/Y and
1011 return it as a Lisp_Object.
1013 If X, Y is on one of the window's special `window_part' elements,
1014 set *PART to the id of that element, and return X and Y converted
1015 to window relative coordinates in WX and WY.
1017 If there is no window under X, Y return nil and leave *PART
1018 unmodified. TOOL_BAR_P non-zero means detect tool-bar windows.
1020 This function was previously implemented with a loop cycling over
1021 windows with Fnext_window, and starting with the frame's selected
1022 window. It turned out that this doesn't work with an
1023 implementation of next_window using Vwindow_list, because
1024 FRAME_SELECTED_WINDOW (F) is not always contained in the window
1025 tree of F when this function is called asynchronously from
1026 note_mouse_highlight. The original loop didn't terminate in this
1030 window_from_coordinates (f
, x
, y
, part
, wx
, wy
, tool_bar_p
)
1033 enum window_part
*part
;
1038 struct check_window_data cw
;
1039 enum window_part dummy
;
1045 cw
.window
= &window
, cw
.x
= &x
, cw
.y
= &y
; cw
.part
= part
;
1046 foreach_window (f
, check_window_containing
, &cw
);
1048 /* If not found above, see if it's in the tool bar window, if a tool
1052 && WINDOWP (f
->tool_bar_window
)
1053 && WINDOW_TOTAL_LINES (XWINDOW (f
->tool_bar_window
)) > 0
1054 && (coordinates_in_window (XWINDOW (f
->tool_bar_window
), &x
, &y
)
1058 window
= f
->tool_bar_window
;
1067 DEFUN ("window-at", Fwindow_at
, Swindow_at
, 2, 3, 0,
1068 doc
: /* Return window containing coordinates X and Y on FRAME.
1069 If omitted, FRAME defaults to the currently selected frame.
1070 The top left corner of the frame is considered to be row 0,
1073 Lisp_Object x
, y
, frame
;
1078 frame
= selected_frame
;
1079 CHECK_LIVE_FRAME (frame
);
1082 /* Check that arguments are integers or floats. */
1083 CHECK_NUMBER_OR_FLOAT (x
);
1084 CHECK_NUMBER_OR_FLOAT (y
);
1086 return window_from_coordinates (f
,
1087 (FRAME_PIXEL_X_FROM_CANON_X (f
, x
)
1088 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
1089 (FRAME_PIXEL_Y_FROM_CANON_Y (f
, y
)
1090 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
1094 DEFUN ("window-point", Fwindow_point
, Swindow_point
, 0, 1, 0,
1095 doc
: /* Return current value of point in WINDOW.
1096 WINDOW defaults to the selected window.
1098 For a nonselected window, this is the value point would have
1099 if that window were selected.
1101 Note that, when WINDOW is the selected window and its buffer
1102 is also currently selected, the value returned is the same as (point).
1103 It would be more strictly correct to return the `top-level' value
1104 of point, outside of any save-excursion forms.
1105 But that is hard to define. */)
1109 register struct window
*w
= decode_window (window
);
1111 if (w
== XWINDOW (selected_window
)
1112 && current_buffer
== XBUFFER (w
->buffer
))
1114 return Fmarker_position (w
->pointm
);
1117 DEFUN ("window-start", Fwindow_start
, Swindow_start
, 0, 1, 0,
1118 doc
: /* Return position at which display currently starts in WINDOW.
1119 WINDOW defaults to the selected window.
1120 This is updated by redisplay or by calling `set-window-start'. */)
1124 return Fmarker_position (decode_window (window
)->start
);
1127 /* This is text temporarily removed from the doc string below.
1129 This function returns nil if the position is not currently known.
1130 That happens when redisplay is preempted and doesn't finish.
1131 If in that case you want to compute where the end of the window would
1132 have been if redisplay had finished, do this:
1134 (goto-char (window-start window))
1135 (vertical-motion (1- (window-height window)) window)
1138 DEFUN ("window-end", Fwindow_end
, Swindow_end
, 0, 2, 0,
1139 doc
: /* Return position at which display currently ends in WINDOW.
1140 WINDOW defaults to the selected window.
1141 This is updated by redisplay, when it runs to completion.
1142 Simply changing the buffer text or setting `window-start'
1143 does not update this value.
1144 Return nil if there is no recorded value. \(This can happen if the
1145 last redisplay of WINDOW was preempted, and did not finish.)
1146 If UPDATE is non-nil, compute the up-to-date position
1147 if it isn't already recorded. */)
1149 Lisp_Object window
, update
;
1152 struct window
*w
= decode_window (window
);
1160 #if 0 /* This change broke some things. We should make it later. */
1161 /* If we don't know the end position, return nil.
1162 The user can compute it with vertical-motion if he wants to.
1163 It would be nicer to do it automatically,
1164 but that's so slow that it would probably bother people. */
1165 if (NILP (w
->window_end_valid
))
1170 && ! (! NILP (w
->window_end_valid
)
1171 && XFASTINT (w
->last_modified
) >= BUF_MODIFF (b
)
1172 && XFASTINT (w
->last_overlay_modified
) >= BUF_OVERLAY_MODIFF (b
))
1175 struct text_pos startp
;
1177 struct buffer
*old_buffer
= NULL
;
1179 /* Cannot use Fvertical_motion because that function doesn't
1180 cope with variable-height lines. */
1181 if (b
!= current_buffer
)
1183 old_buffer
= current_buffer
;
1184 set_buffer_internal (b
);
1187 /* In case W->start is out of the range, use something
1188 reasonable. This situation occurred when loading a file with
1189 `-l' containing a call to `rmail' with subsequent other
1190 commands. At the end, W->start happened to be BEG, while
1191 rmail had already narrowed the buffer. */
1192 if (XMARKER (w
->start
)->charpos
< BEGV
)
1193 SET_TEXT_POS (startp
, BEGV
, BEGV_BYTE
);
1194 else if (XMARKER (w
->start
)->charpos
> ZV
)
1195 SET_TEXT_POS (startp
, ZV
, ZV_BYTE
);
1197 SET_TEXT_POS_FROM_MARKER (startp
, w
->start
);
1199 start_display (&it
, w
, startp
);
1200 move_it_vertically (&it
, window_box_height (w
));
1201 if (it
.current_y
< it
.last_visible_y
)
1202 move_it_past_eol (&it
);
1203 value
= make_number (IT_CHARPOS (it
));
1206 set_buffer_internal (old_buffer
);
1209 XSETINT (value
, BUF_Z (b
) - XFASTINT (w
->window_end_pos
));
1214 DEFUN ("set-window-point", Fset_window_point
, Sset_window_point
, 2, 2, 0,
1215 doc
: /* Make point value in WINDOW be at position POS in WINDOW's buffer.
1218 Lisp_Object window
, pos
;
1220 register struct window
*w
= decode_window (window
);
1222 CHECK_NUMBER_COERCE_MARKER (pos
);
1223 if (w
== XWINDOW (selected_window
)
1224 && XBUFFER (w
->buffer
) == current_buffer
)
1227 set_marker_restricted (w
->pointm
, pos
, w
->buffer
);
1229 /* We have to make sure that redisplay updates the window to show
1230 the new value of point. */
1231 if (!EQ (window
, selected_window
))
1232 ++windows_or_buffers_changed
;
1237 DEFUN ("set-window-start", Fset_window_start
, Sset_window_start
, 2, 3, 0,
1238 doc
: /* Make display in WINDOW start at position POS in WINDOW's buffer.
1239 WINDOW defaults to the selected window. Return POS.
1240 Optional third arg NOFORCE non-nil inhibits next redisplay from
1241 overriding motion of point in order to display at this exact start. */)
1242 (window
, pos
, noforce
)
1243 Lisp_Object window
, pos
, noforce
;
1245 register struct window
*w
= decode_window (window
);
1247 CHECK_NUMBER_COERCE_MARKER (pos
);
1248 set_marker_restricted (w
->start
, pos
, w
->buffer
);
1249 /* this is not right, but much easier than doing what is right. */
1250 w
->start_at_line_beg
= Qnil
;
1252 w
->force_start
= Qt
;
1253 w
->update_mode_line
= Qt
;
1254 XSETFASTINT (w
->last_modified
, 0);
1255 XSETFASTINT (w
->last_overlay_modified
, 0);
1256 if (!EQ (window
, selected_window
))
1257 windows_or_buffers_changed
++;
1263 DEFUN ("window-dedicated-p", Fwindow_dedicated_p
, Swindow_dedicated_p
,
1265 doc
: /* Return non-nil when WINDOW is dedicated to its buffer.
1266 More precisely, return the value assigned by the last call of
1267 set-window-dedicated-`p' for WINDOW or nil if that function was never
1268 called with WINDOW as its argument. WINDOW defaults to the selected
1271 When a window is dedicated to its buffer, `display-buffer' and
1272 `set-window-buffer' will refrain from displaying another buffer in it.
1273 `get-lru-window' and `get-largest-window' treat dedicated windows
1274 specially. `delete-windows-on', `replace-buffer-in-windows',
1275 `quit-window' and `kill-buffer' can delete a dedicated window and the
1276 containing frame. */)
1280 return decode_window (window
)->dedicated
;
1283 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p
,
1284 Sset_window_dedicated_p
, 2, 2, 0,
1285 doc
: /* Mark WINDOW as dedicated according to FLAG.
1286 WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW
1287 as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated.
1290 When a window is dedicated to its buffer, `display-buffer' and
1291 `set-window-buffer' will refrain from displaying another buffer in it.
1292 `get-lru-window' and `get-largest-window' treat dedicated windows
1293 specially. `delete-windows-on', `replace-buffer-in-windows',
1294 `quit-window' and `kill-buffer' can delete a dedicated window and the
1295 containing frame. */)
1297 Lisp_Object window
, flag
;
1299 register struct window
*w
= decode_window (window
);
1301 w
->dedicated
= flag
;
1302 return w
->dedicated
;
1306 DEFUN ("window-parameters", Fwindow_parameters
, Swindow_parameters
,
1308 doc
: /* Return the parameters of WINDOW and their values.
1309 WINDOW defaults to the selected window. The return value is a list of
1310 elements of the form (PARAMETER . VALUE). */)
1314 return Fcopy_alist (decode_window (window
)->window_parameters
);
1317 DEFUN ("window-parameter", Fwindow_parameter
, Swindow_parameter
,
1319 doc
: /* Return WINDOW's value for PARAMETER.
1320 WINDOW defaults to the selected window. */)
1322 Lisp_Object window
, parameter
;
1326 result
= Fassq (parameter
, decode_window (window
)->window_parameters
);
1327 return CDR_SAFE (result
);
1330 DEFUN ("set-window-parameter", Fset_window_parameter
,
1331 Sset_window_parameter
, 3, 3, 0,
1332 doc
: /* Set WINDOW's value of PARAMETER to VALUE.
1333 WINDOW defaults to the selected window. Return VALUE. */)
1334 (window
, parameter
, value
)
1335 Lisp_Object window
, parameter
, value
;
1337 register struct window
*w
= decode_window (window
);
1338 Lisp_Object old_alist_elt
;
1340 old_alist_elt
= Fassq (parameter
, w
->window_parameters
);
1341 if (NILP (old_alist_elt
))
1342 w
->window_parameters
= Fcons (Fcons (parameter
, value
), w
->window_parameters
);
1344 Fsetcdr (old_alist_elt
, value
);
1349 DEFUN ("window-display-table", Fwindow_display_table
, Swindow_display_table
,
1351 doc
: /* Return the display-table that WINDOW is using.
1352 WINDOW defaults to the selected window. */)
1356 return decode_window (window
)->display_table
;
1359 /* Get the display table for use on window W. This is either W's
1360 display table or W's buffer's display table. Ignore the specified
1361 tables if they are not valid; if no valid table is specified,
1364 struct Lisp_Char_Table
*
1365 window_display_table (w
)
1368 struct Lisp_Char_Table
*dp
= NULL
;
1370 if (DISP_TABLE_P (w
->display_table
))
1371 dp
= XCHAR_TABLE (w
->display_table
);
1372 else if (BUFFERP (w
->buffer
))
1374 struct buffer
*b
= XBUFFER (w
->buffer
);
1376 if (DISP_TABLE_P (b
->display_table
))
1377 dp
= XCHAR_TABLE (b
->display_table
);
1378 else if (DISP_TABLE_P (Vstandard_display_table
))
1379 dp
= XCHAR_TABLE (Vstandard_display_table
);
1385 DEFUN ("set-window-display-table", Fset_window_display_table
, Sset_window_display_table
, 2, 2, 0,
1386 doc
: /* Set WINDOW's display-table to TABLE. */)
1388 register Lisp_Object window
, table
;
1390 register struct window
*w
;
1392 w
= decode_window (window
);
1393 w
->display_table
= table
;
1397 /* Record info on buffer window w is displaying
1398 when it is about to cease to display that buffer. */
1401 register struct window
*w
;
1408 if (b
!= XMARKER (w
->pointm
)->buffer
)
1412 if (w
== XWINDOW (selected_window
)
1413 || ! EQ (buf
, XWINDOW (selected_window
)->buffer
))
1414 /* Do this except when the selected window's buffer
1415 is being removed from some other window. */
1417 /* last_window_start records the start position that this buffer
1418 had in the last window to be disconnected from it.
1419 Now that this statement is unconditional,
1420 it is possible for the buffer to be displayed in the
1421 selected window, while last_window_start reflects another
1422 window which was recently showing the same buffer.
1423 Some people might say that might be a good thing. Let's see. */
1424 b
->last_window_start
= marker_position (w
->start
);
1426 /* Point in the selected window's buffer
1427 is actually stored in that buffer, and the window's pointm isn't used.
1428 So don't clobber point in that buffer. */
1429 if (! EQ (buf
, XWINDOW (selected_window
)->buffer
)
1430 /* This line helps to fix Horsley's testbug.el bug. */
1431 && !(WINDOWP (b
->last_selected_window
)
1432 && w
!= XWINDOW (b
->last_selected_window
)
1433 && EQ (buf
, XWINDOW (b
->last_selected_window
)->buffer
)))
1434 temp_set_point_both (b
,
1435 clip_to_bounds (BUF_BEGV (b
),
1436 XMARKER (w
->pointm
)->charpos
,
1438 clip_to_bounds (BUF_BEGV_BYTE (b
),
1439 marker_byte_position (w
->pointm
),
1442 if (WINDOWP (b
->last_selected_window
)
1443 && w
== XWINDOW (b
->last_selected_window
))
1444 b
->last_selected_window
= Qnil
;
1447 /* Put replacement into the window structure in place of old. */
1449 replace_window (old
, replacement
)
1450 Lisp_Object old
, replacement
;
1452 register Lisp_Object tem
;
1453 register struct window
*o
= XWINDOW (old
), *p
= XWINDOW (replacement
);
1455 /* If OLD is its frame's root_window, then replacement is the new
1456 root_window for that frame. */
1458 if (EQ (old
, FRAME_ROOT_WINDOW (XFRAME (o
->frame
))))
1459 FRAME_ROOT_WINDOW (XFRAME (o
->frame
)) = replacement
;
1461 p
->left_col
= o
->left_col
;
1462 p
->top_line
= o
->top_line
;
1463 p
->total_cols
= o
->total_cols
;
1464 p
->total_lines
= o
->total_lines
;
1465 p
->desired_matrix
= p
->current_matrix
= 0;
1467 bzero (&p
->cursor
, sizeof (p
->cursor
));
1468 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
1469 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
1470 p
->phys_cursor_type
= -1;
1471 p
->phys_cursor_width
= -1;
1472 p
->must_be_updated_p
= 0;
1473 p
->pseudo_window_p
= 0;
1474 XSETFASTINT (p
->window_end_vpos
, 0);
1475 XSETFASTINT (p
->window_end_pos
, 0);
1476 p
->window_end_valid
= Qnil
;
1477 p
->frozen_window_start_p
= 0;
1478 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
1480 p
->next
= tem
= o
->next
;
1482 XWINDOW (tem
)->prev
= replacement
;
1484 p
->prev
= tem
= o
->prev
;
1486 XWINDOW (tem
)->next
= replacement
;
1488 p
->parent
= tem
= o
->parent
;
1491 if (EQ (XWINDOW (tem
)->vchild
, old
))
1492 XWINDOW (tem
)->vchild
= replacement
;
1493 if (EQ (XWINDOW (tem
)->hchild
, old
))
1494 XWINDOW (tem
)->hchild
= replacement
;
1497 /*** Here, if replacement is a vertical combination
1498 and so is its new parent, we should make replacement's
1499 children be children of that parent instead. ***/
1502 DEFUN ("delete-window", Fdelete_window
, Sdelete_window
, 0, 1, "",
1503 doc
: /* Remove WINDOW from the display. Default is selected window. */)
1505 register Lisp_Object window
;
1509 window
= selected_window
;
1510 f
= XFRAME (WINDOW_FRAME (XWINDOW (window
)));
1511 delete_window (window
);
1513 run_window_configuration_change_hook (f
);
1519 delete_window (window
)
1520 register Lisp_Object window
;
1522 register Lisp_Object tem
, parent
, sib
;
1523 register struct window
*p
;
1524 register struct window
*par
;
1527 /* Because this function is called by other C code on non-leaf
1528 windows, the CHECK_LIVE_WINDOW macro would choke inappropriately,
1529 so we can't decode_window here. */
1530 CHECK_WINDOW (window
);
1531 p
= XWINDOW (window
);
1533 /* It's a no-op to delete an already-deleted window. */
1534 if (NILP (p
->buffer
)
1536 && NILP (p
->vchild
))
1541 error ("Attempt to delete minibuffer or sole ordinary window");
1542 par
= XWINDOW (parent
);
1544 windows_or_buffers_changed
++;
1545 Vwindow_list
= Qnil
;
1546 f
= XFRAME (WINDOW_FRAME (p
));
1547 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
1549 /* Are we trying to delete any frame's selected window? */
1551 Lisp_Object swindow
, pwindow
;
1553 /* See if the frame's selected window is either WINDOW
1554 or any subwindow of it, by finding all that window's parents
1555 and comparing each one with WINDOW. */
1556 swindow
= FRAME_SELECTED_WINDOW (f
);
1561 while (!NILP (pwindow
))
1563 if (EQ (window
, pwindow
))
1565 pwindow
= XWINDOW (pwindow
)->parent
;
1568 /* If the window being deleted is not a parent of SWINDOW,
1569 then SWINDOW is ok as the new selected window. */
1570 if (!EQ (window
, pwindow
))
1572 /* Otherwise, try another window for SWINDOW. */
1573 swindow
= Fnext_window (swindow
, Qlambda
, Qnil
);
1575 /* If we get back to the frame's selected window,
1576 it means there was no acceptable alternative,
1577 so we cannot delete. */
1578 if (EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1579 error ("Cannot delete window");
1582 /* If we need to change SWINDOW, do it. */
1583 if (! EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1585 /* If we're about to delete the selected window on the
1586 selected frame, then we should use Fselect_window to select
1587 the new window. On the other hand, if we're about to
1588 delete the selected window on any other frame, we shouldn't do
1589 anything but set the frame's selected_window slot. */
1590 if (EQ (FRAME_SELECTED_WINDOW (f
), selected_window
))
1591 Fselect_window (swindow
, Qnil
);
1593 FRAME_SELECTED_WINDOW (f
) = swindow
;
1597 /* Now we know we can delete this one. */
1598 window_deletion_count
++;
1601 /* tem is null for dummy parent windows
1602 (which have inferiors but not any contents themselves) */
1606 unchain_marker (XMARKER (p
->pointm
));
1607 unchain_marker (XMARKER (p
->start
));
1610 /* Free window glyph matrices. It is sure that they are allocated
1611 again when ADJUST_GLYPHS is called. Block input so that expose
1612 events and other events that access glyph matrices are not
1613 processed while we are changing them. */
1615 free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f
)));
1619 XWINDOW (tem
)->prev
= p
->prev
;
1623 XWINDOW (tem
)->next
= p
->next
;
1625 if (EQ (window
, par
->hchild
))
1626 par
->hchild
= p
->next
;
1627 if (EQ (window
, par
->vchild
))
1628 par
->vchild
= p
->next
;
1630 /* Find one of our siblings to give our space to. */
1634 /* If p gives its space to its next sibling, that sibling needs
1635 to have its top/left side pulled back to where p's is.
1636 set_window_{height,width} will re-position the sibling's
1639 XWINDOW (sib
)->top_line
= p
->top_line
;
1640 XWINDOW (sib
)->left_col
= p
->left_col
;
1643 /* Stretch that sibling. */
1644 if (!NILP (par
->vchild
))
1645 set_window_height (sib
,
1646 XFASTINT (XWINDOW (sib
)->total_lines
) + XFASTINT (p
->total_lines
),
1648 if (!NILP (par
->hchild
))
1649 set_window_width (sib
,
1650 XFASTINT (XWINDOW (sib
)->total_cols
) + XFASTINT (p
->total_cols
),
1653 /* If parent now has only one child,
1654 put the child into the parent's place. */
1658 if (NILP (XWINDOW (tem
)->next
)) {
1659 replace_window (parent
, tem
);
1660 par
= XWINDOW (tem
);
1663 /* Since we may be deleting combination windows, we must make sure that
1664 not only p but all its children have been marked as deleted. */
1665 if (! NILP (p
->hchild
))
1666 delete_all_subwindows (XWINDOW (p
->hchild
));
1667 else if (! NILP (p
->vchild
))
1668 delete_all_subwindows (XWINDOW (p
->vchild
));
1670 /* Mark this window as deleted. */
1671 p
->buffer
= p
->hchild
= p
->vchild
= Qnil
;
1673 if (! NILP (par
->parent
))
1674 par
= XWINDOW (par
->parent
);
1676 /* Check if we have a v/hchild with a v/hchild. In that case remove
1679 if (! NILP (par
->vchild
) && ! NILP (XWINDOW (par
->vchild
)->vchild
))
1681 p
= XWINDOW (par
->vchild
);
1682 par
->vchild
= p
->vchild
;
1685 else if (! NILP (par
->hchild
) && ! NILP (XWINDOW (par
->hchild
)->hchild
))
1687 p
= XWINDOW (par
->hchild
);
1688 par
->hchild
= p
->hchild
;
1696 while (! NILP (tem
)) {
1697 XWINDOW (tem
)->parent
= p
->parent
;
1698 if (NILP (XWINDOW (tem
)->next
))
1700 tem
= XWINDOW (tem
)->next
;
1703 /* The next of the v/hchild we are removing is now the next of the
1704 last child for the v/hchild:
1705 Before v/hchild -> v/hchild -> next1 -> next2
1708 After: v/hchild -> next1 -> next2 -> next3
1710 XWINDOW (tem
)->next
= p
->next
;
1711 if (! NILP (p
->next
))
1712 XWINDOW (p
->next
)->prev
= tem
;
1714 p
->next
= p
->prev
= p
->vchild
= p
->hchild
= p
->buffer
= Qnil
;
1718 /* Adjust glyph matrices. */
1725 /***********************************************************************
1727 ***********************************************************************/
1729 /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
1730 pointer. This is a callback function for foreach_window, used in
1731 function window_list. */
1734 add_window_to_list (w
, user_data
)
1738 Lisp_Object
*list
= (Lisp_Object
*) user_data
;
1740 XSETWINDOW (window
, w
);
1741 *list
= Fcons (window
, *list
);
1746 /* Return a list of all windows, for use by next_window. If
1747 Vwindow_list is a list, return that list. Otherwise, build a new
1748 list, cache it in Vwindow_list, and return that. */
1753 if (!CONSP (Vwindow_list
))
1757 Vwindow_list
= Qnil
;
1758 for (tail
= Vframe_list
; CONSP (tail
); tail
= XCDR (tail
))
1760 Lisp_Object args
[2];
1762 /* We are visiting windows in canonical order, and add
1763 new windows at the front of args[1], which means we
1764 have to reverse this list at the end. */
1766 foreach_window (XFRAME (XCAR (tail
)), add_window_to_list
, &args
[1]);
1767 args
[0] = Vwindow_list
;
1768 args
[1] = Fnreverse (args
[1]);
1769 Vwindow_list
= Fnconc (2, args
);
1773 return Vwindow_list
;
1777 /* Value is non-zero if WINDOW satisfies the constraints given by
1778 OWINDOW, MINIBUF and ALL_FRAMES.
1780 MINIBUF t means WINDOW may be minibuffer windows.
1781 `lambda' means WINDOW may not be a minibuffer window.
1782 a window means a specific minibuffer window
1784 ALL_FRAMES t means search all frames,
1785 nil means search just current frame,
1786 `visible' means search just visible frames,
1787 0 means search visible and iconified frames,
1788 a window means search the frame that window belongs to,
1789 a frame means consider windows on that frame, only. */
1792 candidate_window_p (window
, owindow
, minibuf
, all_frames
)
1793 Lisp_Object window
, owindow
, minibuf
, all_frames
;
1795 struct window
*w
= XWINDOW (window
);
1796 struct frame
*f
= XFRAME (w
->frame
);
1797 int candidate_p
= 1;
1799 if (!BUFFERP (w
->buffer
))
1801 else if (MINI_WINDOW_P (w
)
1802 && (EQ (minibuf
, Qlambda
)
1803 || (WINDOWP (minibuf
) && !EQ (minibuf
, window
))))
1805 /* If MINIBUF is `lambda' don't consider any mini-windows.
1806 If it is a window, consider only that one. */
1809 else if (EQ (all_frames
, Qt
))
1811 else if (NILP (all_frames
))
1813 xassert (WINDOWP (owindow
));
1814 candidate_p
= EQ (w
->frame
, XWINDOW (owindow
)->frame
);
1816 else if (EQ (all_frames
, Qvisible
))
1818 FRAME_SAMPLE_VISIBILITY (f
);
1819 candidate_p
= FRAME_VISIBLE_P (f
)
1820 && (FRAME_TERMINAL (XFRAME (w
->frame
))
1821 == FRAME_TERMINAL (XFRAME (selected_frame
)));
1824 else if (INTEGERP (all_frames
) && XINT (all_frames
) == 0)
1826 FRAME_SAMPLE_VISIBILITY (f
);
1827 candidate_p
= (FRAME_VISIBLE_P (f
) || FRAME_ICONIFIED_P (f
)
1828 #ifdef HAVE_X_WINDOWS
1829 /* Yuck!! If we've just created the frame and the
1830 window-manager requested the user to place it
1831 manually, the window may still not be considered
1832 `visible'. I'd argue it should be at least
1833 something like `iconified', but don't know how to do
1835 || (FRAME_X_P (f
) && f
->output_data
.x
->asked_for_visible
1836 && !f
->output_data
.x
->has_been_visible
)
1839 && (FRAME_TERMINAL (XFRAME (w
->frame
))
1840 == FRAME_TERMINAL (XFRAME (selected_frame
)));
1842 else if (WINDOWP (all_frames
))
1843 candidate_p
= (EQ (FRAME_MINIBUF_WINDOW (f
), all_frames
)
1844 || EQ (XWINDOW (all_frames
)->frame
, w
->frame
)
1845 || EQ (XWINDOW (all_frames
)->frame
, FRAME_FOCUS_FRAME (f
)));
1846 else if (FRAMEP (all_frames
))
1847 candidate_p
= EQ (all_frames
, w
->frame
);
1853 /* Decode arguments as allowed by Fnext_window, Fprevious_window, and
1854 Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
1858 decode_next_window_args (window
, minibuf
, all_frames
)
1859 Lisp_Object
*window
, *minibuf
, *all_frames
;
1862 *window
= selected_window
;
1864 CHECK_LIVE_WINDOW (*window
);
1866 /* MINIBUF nil may or may not include minibuffers. Decide if it
1868 if (NILP (*minibuf
))
1869 *minibuf
= minibuf_level
? minibuf_window
: Qlambda
;
1870 else if (!EQ (*minibuf
, Qt
))
1873 /* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
1874 => count none of them, or a specific minibuffer window (the
1875 active one) to count. */
1877 /* ALL_FRAMES nil doesn't specify which frames to include. */
1878 if (NILP (*all_frames
))
1879 *all_frames
= (!EQ (*minibuf
, Qlambda
)
1880 ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window
)->frame
))
1882 else if (EQ (*all_frames
, Qvisible
))
1884 else if (EQ (*all_frames
, make_number (0)))
1886 else if (FRAMEP (*all_frames
))
1888 else if (!EQ (*all_frames
, Qt
))
1891 /* Now *ALL_FRAMES is t meaning search all frames, nil meaning
1892 search just current frame, `visible' meaning search just visible
1893 frames, 0 meaning search visible and iconified frames, or a
1894 window, meaning search the frame that window belongs to, or a
1895 frame, meaning consider windows on that frame, only. */
1899 /* Return the next or previous window of WINDOW in canonical ordering
1900 of windows. NEXT_P non-zero means return the next window. See the
1901 documentation string of next-window for the meaning of MINIBUF and
1905 next_window (window
, minibuf
, all_frames
, next_p
)
1906 Lisp_Object window
, minibuf
, all_frames
;
1909 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1911 /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
1912 return the first window on the frame. */
1913 if (FRAMEP (all_frames
)
1914 && !EQ (all_frames
, XWINDOW (window
)->frame
))
1915 return Fframe_first_window (all_frames
);
1921 /* Find WINDOW in the list of all windows. */
1922 list
= Fmemq (window
, window_list ());
1924 /* Scan forward from WINDOW to the end of the window list. */
1926 for (list
= XCDR (list
); CONSP (list
); list
= XCDR (list
))
1927 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1930 /* Scan from the start of the window list up to WINDOW. */
1932 for (list
= Vwindow_list
;
1933 CONSP (list
) && !EQ (XCAR (list
), window
);
1935 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1939 window
= XCAR (list
);
1943 Lisp_Object candidate
, list
;
1945 /* Scan through the list of windows for candidates. If there are
1946 candidate windows in front of WINDOW, the last one of these
1947 is the one we want. If there are candidates following WINDOW
1948 in the list, again the last one of these is the one we want. */
1950 for (list
= window_list (); CONSP (list
); list
= XCDR (list
))
1952 if (EQ (XCAR (list
), window
))
1954 if (WINDOWP (candidate
))
1957 else if (candidate_window_p (XCAR (list
), window
, minibuf
,
1959 candidate
= XCAR (list
);
1962 if (WINDOWP (candidate
))
1970 DEFUN ("next-window", Fnext_window
, Snext_window
, 0, 3, 0,
1971 doc
: /* Return next window after WINDOW in canonical ordering of windows.
1972 If omitted, WINDOW defaults to the selected window.
1974 Optional second arg MINIBUF t means count the minibuffer window even
1975 if not active. MINIBUF nil or omitted means count the minibuffer iff
1976 it is active. MINIBUF neither t nor nil means not to count the
1977 minibuffer even if it is active.
1979 Several frames may share a single minibuffer; if the minibuffer
1980 counts, all windows on all frames that share that minibuffer count
1981 too. Therefore, `next-window' can be used to iterate through the
1982 set of windows even when the minibuffer is on another frame. If the
1983 minibuffer does not count, only windows from WINDOW's frame count.
1985 Optional third arg ALL-FRAMES t means include windows on all frames.
1986 ALL-FRAMES nil or omitted means cycle within the frames as specified
1987 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1988 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1989 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1990 Anything else means restrict to WINDOW's frame.
1992 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1993 `next-window' to iterate through the entire cycle of acceptable
1994 windows, eventually ending up back at the window you started with.
1995 `previous-window' traverses the same cycle, in the reverse order. */)
1996 (window
, minibuf
, all_frames
)
1997 Lisp_Object window
, minibuf
, all_frames
;
1999 return next_window (window
, minibuf
, all_frames
, 1);
2003 DEFUN ("previous-window", Fprevious_window
, Sprevious_window
, 0, 3, 0,
2004 doc
: /* Return the window preceding WINDOW in canonical ordering of windows.
2005 If omitted, WINDOW defaults to the selected window.
2007 Optional second arg MINIBUF t means count the minibuffer window even
2008 if not active. MINIBUF nil or omitted means count the minibuffer iff
2009 it is active. MINIBUF neither t nor nil means not to count the
2010 minibuffer even if it is active.
2012 Several frames may share a single minibuffer; if the minibuffer
2013 counts, all windows on all frames that share that minibuffer count
2014 too. Therefore, `previous-window' can be used to iterate through
2015 the set of windows even when the minibuffer is on another frame. If
2016 the minibuffer does not count, only windows from WINDOW's frame count
2018 Optional third arg ALL-FRAMES t means include windows on all frames.
2019 ALL-FRAMES nil or omitted means cycle within the frames as specified
2020 above. ALL-FRAMES = `visible' means include windows on all visible frames.
2021 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
2022 If ALL-FRAMES is a frame, restrict search to windows on that frame.
2023 Anything else means restrict to WINDOW's frame.
2025 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
2026 `previous-window' to iterate through the entire cycle of acceptable
2027 windows, eventually ending up back at the window you started with.
2028 `next-window' traverses the same cycle, in the reverse order. */)
2029 (window
, minibuf
, all_frames
)
2030 Lisp_Object window
, minibuf
, all_frames
;
2032 return next_window (window
, minibuf
, all_frames
, 0);
2036 DEFUN ("other-window", Fother_window
, Sother_window
, 1, 2, "p",
2037 doc
: /* Select the ARG'th different window on this frame.
2038 All windows on current frame are arranged in a cyclic order.
2039 This command selects the window ARG steps away in that order.
2040 A negative ARG moves in the opposite order. The optional second
2041 argument ALL-FRAMES has the same meaning as in `next-window', which see. */)
2043 Lisp_Object arg
, all_frames
;
2049 window
= selected_window
;
2051 for (i
= XINT (arg
); i
> 0; --i
)
2052 window
= Fnext_window (window
, Qnil
, all_frames
);
2054 window
= Fprevious_window (window
, Qnil
, all_frames
);
2056 Fselect_window (window
, Qnil
);
2061 DEFUN ("window-list", Fwindow_list
, Swindow_list
, 0, 3, 0,
2062 doc
: /* Return a list of windows on FRAME, starting with WINDOW.
2063 FRAME nil or omitted means use the selected frame.
2064 WINDOW nil or omitted means use the selected window.
2065 MINIBUF t means include the minibuffer window, even if it isn't active.
2066 MINIBUF nil or omitted means include the minibuffer window only
2068 MINIBUF neither nil nor t means never include the minibuffer window. */)
2069 (frame
, minibuf
, window
)
2070 Lisp_Object frame
, minibuf
, window
;
2073 window
= FRAMEP (frame
) ? XFRAME (frame
)->selected_window
: selected_window
;
2074 CHECK_WINDOW (window
);
2076 frame
= selected_frame
;
2078 if (!EQ (frame
, XWINDOW (window
)->frame
))
2079 error ("Window is on a different frame");
2081 return window_list_1 (window
, minibuf
, frame
);
2085 /* Return a list of windows in canonical ordering. Arguments are like
2086 for `next-window'. */
2089 window_list_1 (window
, minibuf
, all_frames
)
2090 Lisp_Object window
, minibuf
, all_frames
;
2092 Lisp_Object tail
, list
, rest
;
2094 decode_next_window_args (&window
, &minibuf
, &all_frames
);
2097 for (tail
= window_list (); CONSP (tail
); tail
= XCDR (tail
))
2098 if (candidate_window_p (XCAR (tail
), window
, minibuf
, all_frames
))
2099 list
= Fcons (XCAR (tail
), list
);
2101 /* Rotate the list to start with WINDOW. */
2102 list
= Fnreverse (list
);
2103 rest
= Fmemq (window
, list
);
2104 if (!NILP (rest
) && !EQ (rest
, list
))
2106 for (tail
= list
; !EQ (XCDR (tail
), rest
); tail
= XCDR (tail
))
2108 XSETCDR (tail
, Qnil
);
2109 list
= nconc2 (rest
, list
);
2116 /* Look at all windows, performing an operation specified by TYPE
2118 If FRAMES is Qt, look at all frames;
2119 Qnil, look at just the selected frame;
2120 Qvisible, look at visible frames;
2121 a frame, just look at windows on that frame.
2122 If MINI is non-zero, perform the operation on minibuffer windows too. */
2127 GET_BUFFER_WINDOW
, /* Arg is buffer */
2128 GET_LRU_WINDOW
, /* Arg is t for full-width windows only */
2129 DELETE_OTHER_WINDOWS
, /* Arg is window not to delete */
2130 DELETE_BUFFER_WINDOWS
, /* Arg is buffer */
2132 UNSHOW_BUFFER
, /* Arg is buffer */
2133 REDISPLAY_BUFFER_WINDOWS
, /* Arg is buffer */
2138 window_loop (type
, obj
, mini
, frames
)
2139 enum window_loop type
;
2140 Lisp_Object obj
, frames
;
2143 Lisp_Object window
, windows
, best_window
, frame_arg
;
2145 struct gcpro gcpro1
;
2147 /* If we're only looping through windows on a particular frame,
2148 frame points to that frame. If we're looping through windows
2149 on all frames, frame is 0. */
2150 if (FRAMEP (frames
))
2151 f
= XFRAME (frames
);
2152 else if (NILP (frames
))
2153 f
= SELECTED_FRAME ();
2158 frame_arg
= Qlambda
;
2159 else if (EQ (frames
, make_number (0)))
2161 else if (EQ (frames
, Qvisible
))
2166 /* frame_arg is Qlambda to stick to one frame,
2167 Qvisible to consider all visible frames,
2170 /* Pick a window to start with. */
2174 window
= FRAME_SELECTED_WINDOW (f
);
2176 window
= FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
2178 windows
= window_list_1 (window
, mini
? Qt
: Qnil
, frame_arg
);
2182 for (; CONSP (windows
); windows
= XCDR (windows
))
2186 window
= XCAR (windows
);
2187 w
= XWINDOW (window
);
2189 /* Note that we do not pay attention here to whether the frame
2190 is visible, since Fwindow_list skips non-visible frames if
2191 that is desired, under the control of frame_arg. */
2192 if (!MINI_WINDOW_P (w
)
2193 /* For UNSHOW_BUFFER, we must always consider all windows. */
2194 || type
== UNSHOW_BUFFER
2195 || (mini
&& minibuf_level
> 0))
2198 case GET_BUFFER_WINDOW
:
2199 if (EQ (w
->buffer
, obj
)
2200 /* Don't find any minibuffer window
2201 except the one that is currently in use. */
2202 && (MINI_WINDOW_P (w
)
2203 ? EQ (window
, minibuf_window
)
2206 if (NILP (best_window
))
2207 best_window
= window
;
2208 else if (EQ (window
, selected_window
))
2209 /* Prefer to return selected-window. */
2210 RETURN_UNGCPRO (window
);
2211 else if (EQ (Fwindow_frame (window
), selected_frame
))
2212 /* Prefer windows on the current frame. */
2213 best_window
= window
;
2217 case GET_LRU_WINDOW
:
2218 /* `obj' is an integer encoding a bitvector.
2219 `obj & 1' means consider only full-width windows.
2220 `obj & 2' means consider also dedicated windows. */
2221 if (((XINT (obj
) & 1) && !WINDOW_FULL_WIDTH_P (w
))
2222 || (!(XINT (obj
) & 2) && !NILP (w
->dedicated
))
2223 /* Minibuffer windows are always ignored. */
2224 || MINI_WINDOW_P (w
))
2226 if (NILP (best_window
)
2227 || (XFASTINT (XWINDOW (best_window
)->use_time
)
2228 > XFASTINT (w
->use_time
)))
2229 best_window
= window
;
2232 case DELETE_OTHER_WINDOWS
:
2233 if (!EQ (window
, obj
))
2234 Fdelete_window (window
);
2237 case DELETE_BUFFER_WINDOWS
:
2238 if (EQ (w
->buffer
, obj
))
2240 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
2242 /* If this window is dedicated, and in a frame of its own,
2244 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2245 && !NILP (w
->dedicated
)
2246 && other_visible_frames (f
))
2248 /* Skip the other windows on this frame.
2249 There might be one, the minibuffer! */
2250 while (CONSP (XCDR (windows
))
2251 && EQ (XWINDOW (XCAR (windows
))->frame
,
2252 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2253 windows
= XCDR (windows
);
2255 /* Now we can safely delete the frame. */
2256 Fdelete_frame (w
->frame
, Qnil
);
2258 else if (NILP (w
->parent
))
2260 /* If we're deleting the buffer displayed in the
2261 only window on the frame, find a new buffer to
2264 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2265 Fset_window_buffer (window
, buffer
, Qnil
);
2266 if (EQ (window
, selected_window
))
2267 Fset_buffer (w
->buffer
);
2270 Fdelete_window (window
);
2274 case GET_LARGEST_WINDOW
:
2275 { /* nil `obj' means to ignore dedicated windows. */
2276 /* Ignore dedicated windows and minibuffers. */
2277 if (MINI_WINDOW_P (w
) || (NILP (obj
) && !NILP (w
->dedicated
)))
2280 if (NILP (best_window
))
2281 best_window
= window
;
2284 struct window
*b
= XWINDOW (best_window
);
2285 if (XFASTINT (w
->total_lines
) * XFASTINT (w
->total_cols
)
2286 > XFASTINT (b
->total_lines
) * XFASTINT (b
->total_cols
))
2287 best_window
= window
;
2293 if (EQ (w
->buffer
, obj
))
2296 struct frame
*f
= XFRAME (w
->frame
);
2298 /* Find another buffer to show in this window. */
2299 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2301 /* If this window is dedicated, and in a frame of its own,
2303 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2304 && !NILP (w
->dedicated
)
2305 && other_visible_frames (f
))
2307 /* Skip the other windows on this frame.
2308 There might be one, the minibuffer! */
2309 while (CONSP (XCDR (windows
))
2310 && EQ (XWINDOW (XCAR (windows
))->frame
,
2311 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2312 windows
= XCDR (windows
);
2314 /* Now we can safely delete the frame. */
2315 Fdelete_frame (w
->frame
, Qnil
);
2317 else if (!NILP (w
->dedicated
) && !NILP (w
->parent
))
2320 XSETWINDOW (window
, w
);
2321 /* If this window is dedicated and not the only window
2322 in its frame, then kill it. */
2323 Fdelete_window (window
);
2327 /* Otherwise show a different buffer in the window. */
2328 w
->dedicated
= Qnil
;
2329 Fset_window_buffer (window
, buffer
, Qnil
);
2330 if (EQ (window
, selected_window
))
2331 Fset_buffer (w
->buffer
);
2336 case REDISPLAY_BUFFER_WINDOWS
:
2337 if (EQ (w
->buffer
, obj
))
2339 mark_window_display_accurate (window
, 0);
2340 w
->update_mode_line
= Qt
;
2341 XBUFFER (obj
)->prevent_redisplay_optimizations_p
= 1;
2342 ++update_mode_lines
;
2343 best_window
= window
;
2347 /* Check for a window that has a killed buffer. */
2348 case CHECK_ALL_WINDOWS
:
2349 if (! NILP (w
->buffer
)
2350 && NILP (XBUFFER (w
->buffer
)->name
))
2354 case WINDOW_LOOP_UNUSED
:
2363 /* Used for debugging. Abort if any window has a dead buffer. */
2366 check_all_windows ()
2368 window_loop (CHECK_ALL_WINDOWS
, Qnil
, 1, Qt
);
2371 DEFUN ("get-lru-window", Fget_lru_window
, Sget_lru_window
, 0, 2, 0,
2372 doc
: /* Return the window least recently selected or used for display.
2373 \(LRU means Least Recently Used.)
2375 Return a full-width window if possible.
2376 A minibuffer window is never a candidate.
2377 A dedicated window is never a candidate, unless DEDICATED is non-nil,
2378 so if all windows are dedicated, the value is nil.
2379 If optional argument FRAME is `visible', search all visible frames.
2380 If FRAME is 0, search all visible and iconified frames.
2381 If FRAME is t, search all frames.
2382 If FRAME is nil, search only the selected frame.
2383 If FRAME is a frame, search only that frame. */)
2385 Lisp_Object frame
, dedicated
;
2387 register Lisp_Object w
;
2388 /* First try for a window that is full-width */
2389 w
= window_loop (GET_LRU_WINDOW
,
2390 NILP (dedicated
) ? make_number (1) : make_number (3),
2392 if (!NILP (w
) && !EQ (w
, selected_window
))
2394 /* If none of them, try the rest */
2395 return window_loop (GET_LRU_WINDOW
,
2396 NILP (dedicated
) ? make_number (0) : make_number (2),
2400 DEFUN ("get-largest-window", Fget_largest_window
, Sget_largest_window
, 0, 2, 0,
2401 doc
: /* Return the largest window in area.
2402 A minibuffer window is never a candidate.
2403 A dedicated window is never a candidate unless DEDICATED is non-nil,
2404 so if all windows are dedicated, the value is nil.
2405 If optional argument FRAME is `visible', search all visible frames.
2406 If FRAME is 0, search all visible and iconified frames.
2407 If FRAME is t, search all frames.
2408 If FRAME is nil, search only the selected frame.
2409 If FRAME is a frame, search only that frame. */)
2411 Lisp_Object frame
, dedicated
;
2413 return window_loop (GET_LARGEST_WINDOW
, dedicated
, 0,
2417 DEFUN ("get-buffer-window", Fget_buffer_window
, Sget_buffer_window
, 0, 2, 0,
2418 doc
: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none.
2419 BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the
2421 If optional argument FRAME is `visible', search all visible frames.
2422 If optional argument FRAME is 0, search all visible and iconified frames.
2423 If FRAME is t, search all frames.
2424 If FRAME is nil, search only the selected frame.
2425 If FRAME is a frame, search only that frame. */)
2426 (buffer_or_name
, frame
)
2427 Lisp_Object buffer_or_name
, frame
;
2431 if (NILP (buffer_or_name
))
2432 buffer
= Fcurrent_buffer ();
2434 buffer
= Fget_buffer (buffer_or_name
);
2436 if (BUFFERP (buffer
))
2437 return window_loop (GET_BUFFER_WINDOW
, buffer
, 1, frame
);
2442 DEFUN ("delete-other-windows", Fdelete_other_windows
, Sdelete_other_windows
,
2444 doc
: /* Make WINDOW (or the selected window) fill its frame.
2445 Only the frame WINDOW is on is affected.
2446 This function tries to reduce display jumps by keeping the text
2447 previously visible in WINDOW in the same place on the frame. Doing this
2448 depends on the value of (window-start WINDOW), so if calling this
2449 function in a program gives strange scrolling, make sure the
2450 window-start value is reasonable when this function is called. */)
2459 window
= selected_window
;
2461 CHECK_LIVE_WINDOW (window
);
2462 w
= XWINDOW (window
);
2464 startpos
= marker_position (w
->start
);
2465 top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2467 if (MINI_WINDOW_P (w
) && top
> 0)
2468 error ("Can't expand minibuffer to full frame");
2470 window_loop (DELETE_OTHER_WINDOWS
, window
, 0, WINDOW_FRAME (w
));
2472 /* Try to minimize scrolling, by setting the window start to the point
2473 will cause the text at the old window start to be at the same place
2474 on the frame. But don't try to do this if the window start is
2475 outside the visible portion (as might happen when the display is
2476 not current, due to typeahead). */
2477 new_top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2479 && startpos
>= BUF_BEGV (XBUFFER (w
->buffer
))
2480 && startpos
<= BUF_ZV (XBUFFER (w
->buffer
)))
2482 struct position pos
;
2483 struct buffer
*obuf
= current_buffer
;
2485 Fset_buffer (w
->buffer
);
2486 /* This computation used to temporarily move point, but that can
2487 have unwanted side effects due to text properties. */
2488 pos
= *vmotion (startpos
, -top
, w
);
2490 set_marker_both (w
->start
, w
->buffer
, pos
.bufpos
, pos
.bytepos
);
2491 w
->window_end_valid
= Qnil
;
2492 w
->start_at_line_beg
= ((pos
.bytepos
== BEGV_BYTE
2493 || FETCH_BYTE (pos
.bytepos
- 1) == '\n') ? Qt
2495 /* We need to do this, so that the window-scroll-functions
2497 w
->optional_new_start
= Qt
;
2499 set_buffer_internal (obuf
);
2505 DEFUN ("delete-windows-on", Fdelete_windows_on
, Sdelete_windows_on
,
2506 0, 2, "bDelete windows on (buffer): ",
2507 doc
: /* Delete all windows showing BUFFER-OR-NAME.
2508 BUFFER-OR-NAME may be a buffer or the name of an existing buffer and
2509 defaults to the current buffer.
2511 Optional second argument FRAME controls which frames are affected.
2512 If optional argument FRAME is `visible', search all visible frames.
2513 If FRAME is 0, search all visible and iconified frames.
2514 If FRAME is nil, search all frames.
2515 If FRAME is t, search only the selected frame.
2516 If FRAME is a frame, search only that frame.
2517 When a window showing BUFFER-OR-NAME is dedicated and the only window of
2518 its frame, that frame is deleted when there are other frames left. */)
2519 (buffer_or_name
, frame
)
2520 Lisp_Object buffer_or_name
, frame
;
2524 /* FRAME uses t and nil to mean the opposite of what window_loop
2528 else if (EQ (frame
, Qt
))
2531 if (NILP (buffer_or_name
))
2532 buffer
= Fcurrent_buffer ();
2535 buffer
= Fget_buffer (buffer_or_name
);
2536 CHECK_BUFFER (buffer
);
2539 window_loop (DELETE_BUFFER_WINDOWS
, buffer
, 0, frame
);
2544 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows
,
2545 Sreplace_buffer_in_windows
,
2546 0, 1, "bReplace buffer in windows: ",
2547 doc
: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it.
2548 BUFFER-OR-NAME may be a buffer or the name of an existing buffer and
2549 defaults to the current buffer.
2551 When a window showing BUFFER-OR-NAME is dedicated that window is
2552 deleted. If that window is the only window on its frame, that frame is
2553 deleted too when there are other frames left. If there are no other
2554 frames left, some other buffer is displayed in that window. */)
2556 Lisp_Object buffer_or_name
;
2560 if (NILP (buffer_or_name
))
2561 buffer
= Fcurrent_buffer ();
2564 buffer
= Fget_buffer (buffer_or_name
);
2565 CHECK_BUFFER (buffer
);
2568 window_loop (UNSHOW_BUFFER
, buffer
, 0, Qt
);
2573 /* Replace BUFFER with some other buffer in all windows
2574 of all frames, even those on other keyboards. */
2577 replace_buffer_in_all_windows (buffer
)
2580 Lisp_Object tail
, frame
;
2582 /* A single call to window_loop won't do the job
2583 because it only considers frames on the current keyboard.
2584 So loop manually over frames, and handle each one. */
2585 FOR_EACH_FRAME (tail
, frame
)
2586 window_loop (UNSHOW_BUFFER
, buffer
, 1, frame
);
2589 /* Set the height of WINDOW and all its inferiors. */
2591 /* The smallest acceptable dimensions for a window. Anything smaller
2592 might crash Emacs. */
2594 #define MIN_SAFE_WINDOW_WIDTH (2)
2595 #define MIN_SAFE_WINDOW_HEIGHT (1)
2597 /* For wp non-zero the total number of columns of window w. Otherwise
2598 the total number of lines of w. */
2600 #define WINDOW_TOTAL_SIZE(w, wp) \
2601 (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w))
2603 /* If *ROWS or *COLS are too small a size for FRAME, set them to the
2604 minimum allowable size. */
2607 check_frame_size (frame
, rows
, cols
)
2611 /* For height, we have to see:
2612 how many windows the frame has at minimum (one or two),
2613 and whether it has a menu bar or other special stuff at the top. */
2615 = ((FRAME_MINIBUF_ONLY_P (frame
) || ! FRAME_HAS_MINIBUF_P (frame
))
2616 ? MIN_SAFE_WINDOW_HEIGHT
2617 : 2 * MIN_SAFE_WINDOW_HEIGHT
);
2619 if (FRAME_TOP_MARGIN (frame
) > 0)
2620 min_height
+= FRAME_TOP_MARGIN (frame
);
2622 if (*rows
< min_height
)
2624 if (*cols
< MIN_SAFE_WINDOW_WIDTH
)
2625 *cols
= MIN_SAFE_WINDOW_WIDTH
;
2628 /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means
2629 check if W's width can be changed, otherwise check W's height.
2630 CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's
2631 siblings, too. If none of the siblings is resizable, WINDOW isn't
2635 window_fixed_size_p (w
, width_p
, check_siblings_p
)
2637 int width_p
, check_siblings_p
;
2642 if (!NILP (w
->hchild
))
2644 c
= XWINDOW (w
->hchild
);
2648 /* A horizontal combination is fixed-width if all of if its
2650 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2651 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2652 fixed_p
= c
== NULL
;
2656 /* A horizontal combination is fixed-height if one of if its
2658 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2659 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2660 fixed_p
= c
!= NULL
;
2663 else if (!NILP (w
->vchild
))
2665 c
= XWINDOW (w
->vchild
);
2669 /* A vertical combination is fixed-width if one of if its
2671 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2672 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2673 fixed_p
= c
!= NULL
;
2677 /* A vertical combination is fixed-height if all of if its
2679 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2680 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2681 fixed_p
= c
== NULL
;
2684 else if (BUFFERP (w
->buffer
))
2686 struct buffer
*old
= current_buffer
;
2689 current_buffer
= XBUFFER (w
->buffer
);
2690 val
= find_symbol_value (Qwindow_size_fixed
);
2691 current_buffer
= old
;
2694 if (!EQ (val
, Qunbound
))
2696 fixed_p
= !NILP (val
);
2699 && ((EQ (val
, Qheight
) && width_p
)
2700 || (EQ (val
, Qwidth
) && !width_p
)))
2704 /* Can't tell if this one is resizable without looking at
2705 siblings. If all siblings are fixed-size this one is too. */
2706 if (!fixed_p
&& check_siblings_p
&& WINDOWP (w
->parent
))
2710 for (child
= w
->prev
; WINDOWP (child
); child
= XWINDOW (child
)->prev
)
2711 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2715 for (child
= w
->next
; WINDOWP (child
); child
= XWINDOW (child
)->next
)
2716 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2729 /* Return minimum size of leaf window W. WIDTH_P non-zero means return
2730 the minimum width of W, WIDTH_P zero means return the minimum height
2731 of W. SAFE_P non-zero means ignore window-min-height|width but just
2732 return values that won't crash Emacs and don't hide components like
2733 fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the
2734 minibuffer window, always return 1. */
2737 window_min_size_2 (w
, width_p
, safe_p
)
2739 int width_p
, safe_p
;
2741 /* We should consider buffer-local values of window_min_height and
2742 window_min_width here. */
2745 int safe_size
= (MIN_SAFE_WINDOW_WIDTH
2746 + WINDOW_FRINGE_COLS (w
)
2747 + WINDOW_SCROLL_BAR_COLS (w
));
2749 return safe_p
? safe_size
: max (window_min_width
, safe_size
);
2751 else if (MINI_WINDOW_P (w
))
2755 int safe_size
= (MIN_SAFE_WINDOW_HEIGHT
2756 + ((BUFFERP (w
->buffer
)
2757 && !NILP (XBUFFER (w
->buffer
)->mode_line_format
))
2760 return safe_p
? safe_size
: max (window_min_height
, safe_size
);
2764 /* Return minimum size of window W, not taking fixed-width windows into
2765 account. WIDTH_P non-zero means return the minimum width, otherwise
2766 return the minimum height. SAFE_P non-zero means ignore
2767 window-min-height|width but just return values that won't crash Emacs
2768 and don't hide components like fringes, scrollbars, or modelines. If
2769 W is a combination window, compute the minimum size from the minimum
2770 sizes of W's children. */
2773 window_min_size_1 (w
, width_p
, safe_p
)
2775 int width_p
, safe_p
;
2780 if (!NILP (w
->hchild
))
2782 /* W is a horizontal combination. */
2783 c
= XWINDOW (w
->hchild
);
2788 /* The minimum width of a horizontal combination is the sum of
2789 the minimum widths of its children. */
2792 size
+= window_min_size_1 (c
, 1, safe_p
);
2793 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2798 /* The minimum height of a horizontal combination is the
2799 maximum of the minimum heights of its children. */
2802 size
= max (window_min_size_1 (c
, 0, safe_p
), size
);
2803 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2807 else if (!NILP (w
->vchild
))
2809 /* W is a vertical combination. */
2810 c
= XWINDOW (w
->vchild
);
2815 /* The minimum width of a vertical combination is the maximum
2816 of the minimum widths of its children. */
2819 size
= max (window_min_size_1 (c
, 1, safe_p
), size
);
2820 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2825 /* The minimum height of a vertical combination is the sum of
2826 the minimum height of its children. */
2829 size
+= window_min_size_1 (c
, 0, safe_p
);
2830 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2835 /* W is a leaf window. */
2836 size
= window_min_size_2 (w
, width_p
, safe_p
);
2841 /* Return the minimum size of window W, taking fixed-size windows into
2842 account. WIDTH_P non-zero means return the minimum width, otherwise
2843 return the minimum height. SAFE_P non-zero means ignore
2844 window-min-height|width but just return values that won't crash Emacs
2845 and don't hide components like fringes, scrollbars, or modelines.
2846 IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED
2847 to 1 if W is fixed-size unless FIXED is null. */
2850 window_min_size (w
, width_p
, safe_p
, ignore_fixed_p
, fixed
)
2852 int width_p
, safe_p
, ignore_fixed_p
, *fixed
;
2859 fixed_p
= window_fixed_size_p (w
, width_p
, 1);
2865 size
= WINDOW_TOTAL_SIZE (w
, width_p
);
2867 size
= window_min_size_1 (w
, width_p
, safe_p
);
2873 /* Adjust the margins of window W if text area is too small.
2874 Return 1 if window width is ok after adjustment; 0 if window
2875 is still too narrow. */
2878 adjust_window_margins (w
)
2881 int box_cols
= (WINDOW_TOTAL_COLS (w
)
2882 - WINDOW_FRINGE_COLS (w
)
2883 - WINDOW_SCROLL_BAR_COLS (w
));
2884 int margin_cols
= (WINDOW_LEFT_MARGIN_COLS (w
)
2885 + WINDOW_RIGHT_MARGIN_COLS (w
));
2887 if (box_cols
- margin_cols
>= MIN_SAFE_WINDOW_WIDTH
)
2890 if (margin_cols
< 0 || box_cols
< MIN_SAFE_WINDOW_WIDTH
)
2893 /* Window's text area is too narrow, but reducing the window
2894 margins will fix that. */
2895 margin_cols
= box_cols
- MIN_SAFE_WINDOW_WIDTH
;
2896 if (WINDOW_RIGHT_MARGIN_COLS (w
) > 0)
2898 if (WINDOW_LEFT_MARGIN_COLS (w
) > 0)
2899 w
->left_margin_cols
= w
->right_margin_cols
2900 = make_number (margin_cols
/2);
2902 w
->right_margin_cols
= make_number (margin_cols
);
2905 w
->left_margin_cols
= make_number (margin_cols
);
2909 /* Calculate new sizes for windows in the list FORWARD when their
2910 compound size goes from TOTAL to SIZE. TOTAL must be greater than
2911 SIZE. The number of windows in FORWARD is NCHILDREN, and the number
2912 that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if
2913 and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means
2914 shrink columns, otherwise shrink lines.
2916 SAFE_P zero means windows may be sized down to window-min-height
2917 lines (window-min-window columns for WIDTH_P non-zero). SAFE_P
2918 non-zero means windows may be sized down to their minimum safe sizes
2919 taking into account the space needed to display modelines, fringes,
2922 This function returns an allocated array of new sizes that the caller
2923 must free. A size -1 means the window is fixed and RESIZE_FIXED_P is
2924 zero. A size zero means the window shall be deleted. Array index 0
2925 refers to the first window in FORWARD, 1 to the second, and so on.
2927 This function resizes windows proportionally to their size. It also
2928 tries to preserve smaller windows by resizing larger windows before
2929 resizing any window to zero. If resize_proportionally is non-nil for
2930 a specific window, it will attempt to strictly resize that window
2931 proportionally, even at the expense of deleting smaller windows. */
2933 shrink_windows (total
, size
, nchildren
, shrinkable
, resize_fixed_p
,
2934 forward
, width_p
, safe_p
)
2935 int total
, size
, nchildren
, shrinkable
;
2936 int resize_fixed_p
, width_p
, safe_p
;
2937 Lisp_Object forward
;
2939 int available_resize
= 0;
2940 int *new_sizes
, *min_sizes
;
2943 int smallest
= total
;
2944 int total_removed
= 0;
2945 int total_shrink
= total
- size
;
2948 new_sizes
= xmalloc (sizeof (*new_sizes
) * nchildren
);
2949 min_sizes
= xmalloc (sizeof (*min_sizes
) * nchildren
);
2951 for (i
= 0, child
= forward
; !NILP (child
); child
= c
->next
, ++i
)
2955 c
= XWINDOW (child
);
2956 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
2958 if (!resize_fixed_p
&& window_fixed_size_p (c
, width_p
, 0))
2962 new_sizes
[i
] = child_size
;
2963 min_sizes
[i
] = window_min_size_1 (c
, width_p
, safe_p
);
2964 if (child_size
> min_sizes
[i
]
2965 && NILP (c
->resize_proportionally
))
2966 available_resize
+= child_size
- min_sizes
[i
];
2969 /* We might need to shrink some windows to zero. Find the smallest
2970 windows and set them to 0 until we can fulfil the new size. */
2972 while (shrinkable
> 1 && size
+ available_resize
< total
)
2974 for (i
= 0; i
< nchildren
; ++i
)
2975 if (new_sizes
[i
] > 0 && smallest
> new_sizes
[i
])
2976 smallest
= new_sizes
[i
];
2978 for (i
= 0; i
< nchildren
; ++i
)
2979 if (new_sizes
[i
] == smallest
)
2981 /* Resize this window down to zero. */
2983 if (smallest
> min_sizes
[i
])
2984 available_resize
-= smallest
- min_sizes
[i
];
2985 available_resize
+= smallest
;
2987 total_removed
+= smallest
;
2989 /* We don't know what the smallest is now. */
2992 /* Out of for, just remove one window at the time and
2993 check again if we have enough space. */
2998 /* Now, calculate the new sizes. Try to shrink each window
2999 proportional to its size. */
3000 for (i
= 0; i
< nchildren
; ++i
)
3002 if (new_sizes
[i
] > min_sizes
[i
])
3004 int to_shrink
= total_shrink
* new_sizes
[i
] / total
;
3006 if (new_sizes
[i
] - to_shrink
< min_sizes
[i
])
3007 to_shrink
= new_sizes
[i
] - min_sizes
[i
];
3008 new_sizes
[i
] -= to_shrink
;
3009 total_removed
+= to_shrink
;
3013 /* Any reminder due to rounding, we just subtract from windows
3014 that are left and still can be shrunk. */
3015 while (total_shrink
> total_removed
)
3017 int nonzero_sizes
= 0;
3018 int nonzero_idx
= -1;
3020 for (i
= 0; i
< nchildren
; ++i
)
3021 if (new_sizes
[i
] > 0)
3027 for (i
= 0; i
< nchildren
; ++i
)
3028 if (new_sizes
[i
] > min_sizes
[i
])
3033 /* Out of for, just shrink one window at the time and
3034 check again if we have enough space. */
3038 /* Special case, only one window left. */
3039 if (nonzero_sizes
== 1)
3043 /* Any surplus due to rounding, we add to windows that are left. */
3044 while (total_shrink
< total_removed
)
3046 for (i
= 0; i
< nchildren
; ++i
)
3048 if (new_sizes
[i
] != 0 && total_shrink
< total_removed
)
3062 /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
3063 WINDOW's width. Resize WINDOW's children, if any, so that they keep
3064 their proportionate size relative to WINDOW.
3066 If FIRST_ONLY is 1, change only the first of WINDOW's children when
3067 they are in series. If LAST_ONLY is 1, change only the last of
3068 WINDOW's children when they are in series.
3070 Propagate WINDOW's top or left edge position to children. Delete
3071 windows that become too small unless NODELETE_P is 1. When
3072 NODELETE_P equals 2 do not honor settings for window-min-height and
3073 window-min-width when resizing windows but use safe defaults instead.
3074 This should give better behavior when resizing frames. */
3077 size_window (window
, size
, width_p
, nodelete_p
, first_only
, last_only
)
3079 int size
, width_p
, nodelete_p
;
3080 int first_only
, last_only
;
3082 struct window
*w
= XWINDOW (window
);
3084 Lisp_Object child
, *forward
, *sideward
;
3085 int old_size
= WINDOW_TOTAL_SIZE (w
, width_p
);
3087 size
= max (0, size
);
3089 /* Delete WINDOW if it's too small. */
3090 if (nodelete_p
!= 1 && !NILP (w
->parent
)
3091 && size
< window_min_size_1 (w
, width_p
, nodelete_p
== 2))
3093 delete_window (window
);
3097 /* Set redisplay hints. */
3098 w
->last_modified
= make_number (0);
3099 w
->last_overlay_modified
= make_number (0);
3100 windows_or_buffers_changed
++;
3101 FRAME_WINDOW_SIZES_CHANGED (XFRAME (w
->frame
)) = 1;
3105 sideward
= &w
->vchild
;
3106 forward
= &w
->hchild
;
3107 w
->total_cols
= make_number (size
);
3108 adjust_window_margins (w
);
3112 sideward
= &w
->hchild
;
3113 forward
= &w
->vchild
;
3114 w
->total_lines
= make_number (size
);
3115 w
->orig_total_lines
= Qnil
;
3118 if (!NILP (*sideward
))
3120 /* We have a chain of parallel siblings whose size should all change. */
3121 for (child
= *sideward
; !NILP (child
); child
= c
->next
)
3123 c
= XWINDOW (child
);
3125 c
->left_col
= w
->left_col
;
3127 c
->top_line
= w
->top_line
;
3128 size_window (child
, size
, width_p
, nodelete_p
,
3129 first_only
, last_only
);
3132 else if (!NILP (*forward
) && last_only
)
3134 /* Change the last in a series of siblings. */
3135 Lisp_Object last_child
;
3138 for (child
= *forward
; !NILP (child
); child
= c
->next
)
3140 c
= XWINDOW (child
);
3144 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3145 size_window (last_child
, size
- old_size
+ child_size
,
3146 width_p
, nodelete_p
, first_only
, last_only
);
3148 else if (!NILP (*forward
) && first_only
)
3150 /* Change the first in a series of siblings. */
3154 c
= XWINDOW (child
);
3157 c
->left_col
= w
->left_col
;
3159 c
->top_line
= w
->top_line
;
3161 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3162 size_window (child
, size
- old_size
+ child_size
,
3163 width_p
, nodelete_p
, first_only
, last_only
);
3165 else if (!NILP (*forward
))
3167 int fixed_size
, each
, extra
, n
;
3168 int resize_fixed_p
, nfixed
;
3169 int last_pos
, first_pos
, nchildren
, total
;
3170 int *new_sizes
= NULL
;
3172 /* Determine the fixed-size portion of this window, and the
3173 number of child windows. */
3174 fixed_size
= nchildren
= nfixed
= total
= 0;
3175 for (child
= *forward
; !NILP (child
); child
= c
->next
, ++nchildren
)
3179 c
= XWINDOW (child
);
3180 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3181 total
+= child_size
;
3183 if (window_fixed_size_p (c
, width_p
, 0))
3185 fixed_size
+= child_size
;
3190 /* If the new size is smaller than fixed_size, or if there
3191 aren't any resizable windows, allow resizing fixed-size
3193 resize_fixed_p
= nfixed
== nchildren
|| size
< fixed_size
;
3195 /* Compute how many lines/columns to add/remove to each child. The
3196 value of extra takes care of rounding errors. */
3197 n
= resize_fixed_p
? nchildren
: nchildren
- nfixed
;
3198 if (size
< total
&& n
> 1)
3199 new_sizes
= shrink_windows (total
, size
, nchildren
, n
,
3200 resize_fixed_p
, *forward
, width_p
,
3204 each
= (size
- total
) / n
;
3205 extra
= (size
- total
) - n
* each
;
3208 /* Compute new children heights and edge positions. */
3209 first_pos
= width_p
? XINT (w
->left_col
) : XINT (w
->top_line
);
3210 last_pos
= first_pos
;
3211 for (n
= 0, child
= *forward
; !NILP (child
); child
= c
->next
, ++n
)
3213 int new_size
, old_size
;
3215 c
= XWINDOW (child
);
3216 old_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3217 new_size
= old_size
;
3219 /* The top or left edge position of this child equals the
3220 bottom or right edge of its predecessor. */
3222 c
->left_col
= make_number (last_pos
);
3224 c
->top_line
= make_number (last_pos
);
3226 /* If this child can be resized, do it. */
3227 if (resize_fixed_p
|| !window_fixed_size_p (c
, width_p
, 0))
3229 new_size
= new_sizes
? new_sizes
[n
] : old_size
+ each
+ extra
;
3233 /* Set new size. Note that size_window also propagates
3234 edge positions to children, so it's not a no-op if we
3235 didn't change the child's size. */
3236 size_window (child
, new_size
, width_p
, 1, first_only
, last_only
);
3238 /* Remember the bottom/right edge position of this child; it
3239 will be used to set the top/left edge of the next child. */
3240 last_pos
+= new_size
;
3245 /* We should have covered the parent exactly with child windows. */
3246 xassert (size
== last_pos
- first_pos
);
3248 /* Now delete any children that became too small. */
3249 if (nodelete_p
!= 1)
3250 for (child
= *forward
; !NILP (child
); child
= c
->next
)
3254 c
= XWINDOW (child
);
3255 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3256 size_window (child
, child_size
, width_p
, nodelete_p
,
3257 first_only
, last_only
);
3262 /* Set WINDOW's height to HEIGHT, and recursively change the height of
3263 WINDOW's children. NODELETE zero means windows that have become
3264 smaller than window-min-height in the process may be deleted.
3265 NODELETE 1 means never delete windows that become too small in the
3266 process. (The caller should check later and do so if appropriate.)
3267 NODELETE 2 means delete only windows that have become too small to be
3268 displayed correctly. */
3271 set_window_height (window
, height
, nodelete
)
3276 size_window (window
, height
, 0, nodelete
, 0, 0);
3279 /* Set WINDOW's width to WIDTH, and recursively change the width of
3280 WINDOW's children. NODELETE zero means windows that have become
3281 smaller than window-min-width in the process may be deleted.
3282 NODELETE 1 means never delete windows that become too small in the
3283 process. (The caller should check later and do so if appropriate.)
3284 NODELETE 2 means delete only windows that have become too small to be
3285 displayed correctly. */
3288 set_window_width (window
, width
, nodelete
)
3293 size_window (window
, width
, 1, nodelete
, 0, 0);
3296 /* Change window heights in windows rooted in WINDOW by N lines. */
3299 change_window_heights (window
, n
)
3303 struct window
*w
= XWINDOW (window
);
3305 XSETFASTINT (w
->top_line
, XFASTINT (w
->top_line
) + n
);
3306 XSETFASTINT (w
->total_lines
, XFASTINT (w
->total_lines
) - n
);
3308 if (INTEGERP (w
->orig_top_line
))
3309 XSETFASTINT (w
->orig_top_line
, XFASTINT (w
->orig_top_line
) + n
);
3310 if (INTEGERP (w
->orig_total_lines
))
3311 XSETFASTINT (w
->orig_total_lines
, XFASTINT (w
->orig_total_lines
) - n
);
3313 /* Handle just the top child in a vertical split. */
3314 if (!NILP (w
->vchild
))
3315 change_window_heights (w
->vchild
, n
);
3317 /* Adjust all children in a horizontal split. */
3318 for (window
= w
->hchild
; !NILP (window
); window
= w
->next
)
3320 w
= XWINDOW (window
);
3321 change_window_heights (window
, n
);
3326 int window_select_count
;
3328 EXFUN (Fset_window_fringes
, 4);
3329 EXFUN (Fset_window_scroll_bars
, 4);
3332 run_funs (Lisp_Object funs
)
3334 for (; CONSP (funs
); funs
= XCDR (funs
))
3335 if (!EQ (XCAR (funs
), Qt
))
3336 call0 (XCAR (funs
));
3339 static Lisp_Object
select_window_norecord (Lisp_Object window
);
3342 run_window_configuration_change_hook (struct frame
*f
)
3344 int count
= SPECPDL_INDEX ();
3345 Lisp_Object frame
, global_wcch
3346 = Fdefault_value (Qwindow_configuration_change_hook
);
3347 XSETFRAME (frame
, f
);
3349 if (NILP (Vrun_hooks
))
3352 if (SELECTED_FRAME () != f
)
3354 record_unwind_protect (Fselect_frame
, Fselected_frame ());
3355 Fselect_frame (frame
);
3358 /* Use the right buffer. Matters when running the local hooks. */
3359 if (current_buffer
!= XBUFFER (Fwindow_buffer (Qnil
)))
3361 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
3362 Fset_buffer (Fwindow_buffer (Qnil
));
3365 /* Look for buffer-local values. */
3367 Lisp_Object windows
= Fwindow_list (frame
, Qlambda
, Qnil
);
3368 for (; CONSP (windows
); windows
= XCDR (windows
))
3370 Lisp_Object window
= XCAR (windows
);
3371 Lisp_Object buffer
= Fwindow_buffer (window
);
3372 if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook
,
3375 int count
= SPECPDL_INDEX ();
3376 record_unwind_protect (select_window_norecord
, Fselected_window ());
3377 select_window_norecord (window
);
3378 run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook
,
3380 unbind_to (count
, Qnil
);
3385 run_funs (global_wcch
);
3386 unbind_to (count
, Qnil
);
3389 /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero
3390 means it's allowed to run hooks. See make_frame for a case where
3391 it's not allowed. KEEP_MARGINS_P non-zero means that the current
3392 margins, fringes, and scroll-bar settings of the window are not
3393 reset from the buffer's local settings. */
3396 set_window_buffer (window
, buffer
, run_hooks_p
, keep_margins_p
)
3397 Lisp_Object window
, buffer
;
3398 int run_hooks_p
, keep_margins_p
;
3400 struct window
*w
= XWINDOW (window
);
3401 struct buffer
*b
= XBUFFER (buffer
);
3402 int count
= SPECPDL_INDEX ();
3403 int samebuf
= EQ (buffer
, w
->buffer
);
3407 if (EQ (window
, selected_window
))
3408 b
->last_selected_window
= window
;
3410 /* Let redisplay errors through. */
3411 b
->display_error_modiff
= 0;
3413 /* Update time stamps of buffer display. */
3414 if (INTEGERP (b
->display_count
))
3415 XSETINT (b
->display_count
, XINT (b
->display_count
) + 1);
3416 b
->display_time
= Fcurrent_time ();
3418 XSETFASTINT (w
->window_end_pos
, 0);
3419 XSETFASTINT (w
->window_end_vpos
, 0);
3420 bzero (&w
->last_cursor
, sizeof w
->last_cursor
);
3421 w
->window_end_valid
= Qnil
;
3422 if (!(keep_margins_p
&& samebuf
))
3423 { /* If we're not actually changing the buffer, Don't reset hscroll and
3424 vscroll. This case happens for example when called from
3425 change_frame_size_1, where we use a dummy call to
3426 Fset_window_buffer on the frame's selected window (and no other)
3427 just in order to run window-configuration-change-hook.
3428 Resetting hscroll and vscroll here is problematic for things like
3429 image-mode and doc-view-mode since it resets the image's position
3430 whenever we resize the frame. */
3431 w
->hscroll
= w
->min_hscroll
= make_number (0);
3433 set_marker_both (w
->pointm
, buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
3434 set_marker_restricted (w
->start
,
3435 make_number (b
->last_window_start
),
3437 w
->start_at_line_beg
= Qnil
;
3438 w
->force_start
= Qnil
;
3439 XSETFASTINT (w
->last_modified
, 0);
3440 XSETFASTINT (w
->last_overlay_modified
, 0);
3442 /* Maybe we could move this into the `if' but it's not obviously safe and
3443 I doubt it's worth the trouble. */
3444 windows_or_buffers_changed
++;
3446 /* We must select BUFFER for running the window-scroll-functions. */
3447 /* We can't check ! NILP (Vwindow_scroll_functions) here
3448 because that might itself be a local variable. */
3449 if (window_initialized
)
3451 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
3452 Fset_buffer (buffer
);
3455 XMARKER (w
->pointm
)->insertion_type
= !NILP (Vwindow_point_insertion_type
);
3457 if (!keep_margins_p
)
3459 /* Set left and right marginal area width etc. from buffer. */
3461 /* This may call adjust_window_margins three times, so
3462 temporarily disable window margins. */
3463 Lisp_Object save_left
= w
->left_margin_cols
;
3464 Lisp_Object save_right
= w
->right_margin_cols
;
3466 w
->left_margin_cols
= w
->right_margin_cols
= Qnil
;
3468 Fset_window_fringes (window
,
3469 b
->left_fringe_width
, b
->right_fringe_width
,
3470 b
->fringes_outside_margins
);
3472 Fset_window_scroll_bars (window
,
3473 b
->scroll_bar_width
,
3474 b
->vertical_scroll_bar_type
, Qnil
);
3476 w
->left_margin_cols
= save_left
;
3477 w
->right_margin_cols
= save_right
;
3479 Fset_window_margins (window
,
3480 b
->left_margin_cols
, b
->right_margin_cols
);
3485 if (! NILP (Vwindow_scroll_functions
))
3486 run_hook_with_args_2 (Qwindow_scroll_functions
, window
,
3487 Fmarker_position (w
->start
));
3488 run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w
)));
3491 unbind_to (count
, Qnil
);
3495 DEFUN ("set-window-buffer", Fset_window_buffer
, Sset_window_buffer
, 2, 3, 0,
3496 doc
: /* Make WINDOW display BUFFER-OR-NAME as its contents.
3497 WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer
3498 or the name of an existing buffer. Optional third argument KEEP-MARGINS
3499 non-nil means that WINDOW's current display margins, fringe widths, and
3500 scroll bar settings are preserved; the default is to reset these from
3501 the local settings for BUFFER-OR-NAME or the frame defaults. Return nil.
3503 This function throws an error when WINDOW is dedicated to its buffer and
3504 does not already display BUFFER-OR-NAME.
3506 This function runs the hook `window-scroll-functions'. */)
3507 (window
, buffer_or_name
, keep_margins
)
3508 register Lisp_Object window
, buffer_or_name
, keep_margins
;
3510 register Lisp_Object tem
, buffer
;
3511 register struct window
*w
= decode_window (window
);
3513 XSETWINDOW (window
, w
);
3514 buffer
= Fget_buffer (buffer_or_name
);
3515 CHECK_BUFFER (buffer
);
3516 if (NILP (XBUFFER (buffer
)->name
))
3517 error ("Attempt to display deleted buffer");
3521 error ("Window is deleted");
3522 else if (!EQ (tem
, Qt
))
3523 /* w->buffer is t when the window is first being set up. */
3525 if (!EQ (tem
, buffer
))
3526 if (EQ (w
->dedicated
, Qt
))
3527 error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem
)->name
));
3529 w
->dedicated
= Qnil
;
3534 set_window_buffer (window
, buffer
, 1, !NILP (keep_margins
));
3538 /* Note that selected_window can be nil when this is called from
3539 Fset_window_configuration. */
3541 DEFUN ("select-window", Fselect_window
, Sselect_window
, 1, 2, 0,
3542 doc
: /* Select WINDOW. Most editing will apply to WINDOW's buffer.
3543 If WINDOW is not already selected, make WINDOW's buffer current
3544 and make WINDOW the frame's selected window. Return WINDOW.
3545 Optional second arg NORECORD non-nil means do not put this buffer
3546 at the front of the list of recently selected ones.
3548 Note that the main editor command loop selects the buffer of the
3549 selected window before each command. */)
3551 register Lisp_Object window
, norecord
;
3553 register struct window
*w
;
3554 register struct window
*ow
;
3557 CHECK_LIVE_WINDOW (window
);
3559 w
= XWINDOW (window
);
3560 w
->frozen_window_start_p
= 0;
3562 if (NILP (norecord
))
3564 ++window_select_count
;
3565 XSETFASTINT (w
->use_time
, window_select_count
);
3568 if (EQ (window
, selected_window
))
3571 sf
= SELECTED_FRAME ();
3572 if (XFRAME (WINDOW_FRAME (w
)) != sf
)
3574 XFRAME (WINDOW_FRAME (w
))->selected_window
= window
;
3575 /* Use this rather than Fhandle_switch_frame
3576 so that FRAME_FOCUS_FRAME is moved appropriately as we
3577 move around in the state where a minibuffer in a separate
3579 Fselect_frame (WINDOW_FRAME (w
));
3580 /* Fselect_frame called us back so we've done all the work already. */
3581 eassert (EQ (window
, selected_window
));
3585 sf
->selected_window
= window
;
3587 /* Store the current buffer's actual point into the
3588 old selected window. It belongs to that window,
3589 and when the window is not selected, must be in the window. */
3590 if (!NILP (selected_window
))
3592 ow
= XWINDOW (selected_window
);
3593 if (! NILP (ow
->buffer
))
3594 set_marker_both (ow
->pointm
, ow
->buffer
,
3595 BUF_PT (XBUFFER (ow
->buffer
)),
3596 BUF_PT_BYTE (XBUFFER (ow
->buffer
)));
3599 selected_window
= window
;
3601 if (NILP (norecord
))
3602 record_buffer (w
->buffer
);
3603 Fset_buffer (w
->buffer
);
3605 XBUFFER (w
->buffer
)->last_selected_window
= window
;
3607 /* Go to the point recorded in the window.
3608 This is important when the buffer is in more
3609 than one window. It also matters when
3610 redisplay_window has altered point after scrolling,
3611 because it makes the change only in the window. */
3613 register int new_point
= marker_position (w
->pointm
);
3614 if (new_point
< BEGV
)
3616 else if (new_point
> ZV
)
3622 windows_or_buffers_changed
++;
3627 select_window_norecord (window
)
3630 return Fselect_window (window
, Qt
);
3634 display_buffer (buffer
, not_this_window_p
, override_frame
)
3635 Lisp_Object buffer
, not_this_window_p
, override_frame
;
3637 return call3 (Qdisplay_buffer
, buffer
, not_this_window_p
, override_frame
);
3640 DEFUN ("force-window-update", Fforce_window_update
, Sforce_window_update
,
3642 doc
: /* Force all windows to be updated on next redisplay.
3643 If optional arg OBJECT is a window, force redisplay of that window only.
3644 If OBJECT is a buffer or buffer name, force redisplay of all windows
3645 displaying that buffer. */)
3651 windows_or_buffers_changed
++;
3652 update_mode_lines
++;
3656 if (WINDOWP (object
))
3658 struct window
*w
= XWINDOW (object
);
3659 mark_window_display_accurate (object
, 0);
3660 w
->update_mode_line
= Qt
;
3661 if (BUFFERP (w
->buffer
))
3662 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
3663 ++update_mode_lines
;
3667 if (STRINGP (object
))
3668 object
= Fget_buffer (object
);
3669 if (BUFFERP (object
) && !NILP (XBUFFER (object
)->name
))
3671 /* Walk all windows looking for buffer, and force update
3672 of each of those windows. */
3674 object
= window_loop (REDISPLAY_BUFFER_WINDOWS
, object
, 0, Qvisible
);
3675 return NILP (object
) ? Qnil
: Qt
;
3678 /* If nothing suitable was found, just return.
3679 We could signal an error, but this feature will typically be used
3680 asynchronously in timers or process sentinels, so we don't. */
3686 temp_output_buffer_show (buf
)
3687 register Lisp_Object buf
;
3689 register struct buffer
*old
= current_buffer
;
3690 register Lisp_Object window
;
3691 register struct window
*w
;
3693 XBUFFER (buf
)->directory
= current_buffer
->directory
;
3696 BUF_SAVE_MODIFF (XBUFFER (buf
)) = MODIFF
;
3700 #if 0 /* rms: there should be no reason for this. */
3701 XBUFFER (buf
)->prevent_redisplay_optimizations_p
= 1;
3703 set_buffer_internal (old
);
3705 if (!NILP (Vtemp_buffer_show_function
))
3706 call1 (Vtemp_buffer_show_function
, buf
);
3709 window
= display_buffer (buf
, Qnil
, Qnil
);
3711 if (!EQ (XWINDOW (window
)->frame
, selected_frame
))
3712 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window
)));
3713 Vminibuf_scroll_window
= window
;
3714 w
= XWINDOW (window
);
3715 XSETFASTINT (w
->hscroll
, 0);
3716 XSETFASTINT (w
->min_hscroll
, 0);
3717 set_marker_restricted_both (w
->start
, buf
, BEG
, BEG
);
3718 set_marker_restricted_both (w
->pointm
, buf
, BEG
, BEG
);
3720 /* Run temp-buffer-show-hook, with the chosen window selected
3721 and its buffer current. */
3723 if (!NILP (Vrun_hooks
)
3724 && !NILP (Fboundp (Qtemp_buffer_show_hook
))
3725 && !NILP (Fsymbol_value (Qtemp_buffer_show_hook
)))
3727 int count
= SPECPDL_INDEX ();
3728 Lisp_Object prev_window
, prev_buffer
;
3729 prev_window
= selected_window
;
3730 XSETBUFFER (prev_buffer
, old
);
3732 /* Select the window that was chosen, for running the hook.
3733 Note: Both Fselect_window and select_window_norecord may
3734 set-buffer to the buffer displayed in the window,
3735 so we need to save the current buffer. --stef */
3736 record_unwind_protect (Fset_buffer
, prev_buffer
);
3737 record_unwind_protect (select_window_norecord
, prev_window
);
3738 Fselect_window (window
, Qt
);
3739 Fset_buffer (w
->buffer
);
3740 call1 (Vrun_hooks
, Qtemp_buffer_show_hook
);
3741 unbind_to (count
, Qnil
);
3747 make_dummy_parent (window
)
3751 register struct window
*o
, *p
;
3754 o
= XWINDOW (window
);
3755 p
= allocate_window ();
3756 for (i
= 0; i
< VECSIZE (struct window
); ++i
)
3757 ((struct Lisp_Vector
*) p
)->contents
[i
]
3758 = ((struct Lisp_Vector
*)o
)->contents
[i
];
3759 XSETWINDOW (new, p
);
3762 XSETFASTINT (p
->sequence_number
, sequence_number
);
3764 /* Put new into window structure in place of window */
3765 replace_window (window
, new);
3778 DEFUN ("split-window", Fsplit_window
, Ssplit_window
, 0, 3, "",
3779 doc
: /* Split WINDOW, putting SIZE lines in the first of the pair.
3780 WINDOW defaults to selected one and SIZE to half its size.
3781 If optional third arg HORIZONTAL is non-nil, split side by side and put
3782 SIZE columns in the first of the pair. In that case, SIZE includes that
3783 window's scroll bar, or the divider column to its right.
3784 Interactively, all arguments are nil.
3785 Returns the newly created window (which is the lower or rightmost one).
3786 The upper or leftmost window is the original one, and remains selected
3787 if it was selected before.
3789 See Info node `(elisp)Splitting Windows' for more details and examples. */)
3790 (window
, size
, horizontal
)
3791 Lisp_Object window
, size
, horizontal
;
3793 register Lisp_Object
new;
3794 register struct window
*o
, *p
;
3796 register int size_int
;
3799 window
= selected_window
;
3801 CHECK_LIVE_WINDOW (window
);
3803 o
= XWINDOW (window
);
3804 fo
= XFRAME (WINDOW_FRAME (o
));
3808 if (!NILP (horizontal
))
3809 /* Calculate the size of the left-hand window, by dividing
3810 the usable space in columns by two.
3811 We round up, since the left-hand window may include
3812 a dividing line, while the right-hand may not. */
3813 size_int
= (XFASTINT (o
->total_cols
) + 1) >> 1;
3815 size_int
= XFASTINT (o
->total_lines
) >> 1;
3819 CHECK_NUMBER (size
);
3820 size_int
= XINT (size
);
3823 if (MINI_WINDOW_P (o
))
3824 error ("Attempt to split minibuffer window");
3825 else if (window_fixed_size_p (o
, !NILP (horizontal
), 0))
3826 error ("Attempt to split fixed-size window");
3828 if (NILP (horizontal
))
3830 int window_safe_height
= window_min_size_2 (o
, 0, 0);
3832 if (size_int
< window_safe_height
)
3833 error ("Window height %d too small (after splitting)", size_int
);
3834 if (size_int
+ window_safe_height
> XFASTINT (o
->total_lines
))
3835 error ("Window height %d too small (after splitting)",
3836 XFASTINT (o
->total_lines
) - size_int
);
3837 if (NILP (o
->parent
)
3838 || NILP (XWINDOW (o
->parent
)->vchild
))
3840 make_dummy_parent (window
);
3842 XWINDOW (new)->vchild
= window
;
3847 int window_safe_width
= window_min_size_2 (o
, 1, 0);
3849 if (size_int
< window_safe_width
)
3850 error ("Window width %d too small (after splitting)", size_int
);
3851 if (size_int
+ window_safe_width
> XFASTINT (o
->total_cols
))
3852 error ("Window width %d too small (after splitting)",
3853 XFASTINT (o
->total_cols
) - size_int
);
3854 if (NILP (o
->parent
)
3855 || NILP (XWINDOW (o
->parent
)->hchild
))
3857 make_dummy_parent (window
);
3859 XWINDOW (new)->hchild
= window
;
3863 /* Now we know that window's parent is a vertical combination
3864 if we are dividing vertically, or a horizontal combination
3865 if we are making side-by-side windows */
3867 windows_or_buffers_changed
++;
3868 FRAME_WINDOW_SIZES_CHANGED (fo
) = 1;
3869 new = make_window ();
3872 p
->frame
= o
->frame
;
3874 if (!NILP (p
->next
))
3875 XWINDOW (p
->next
)->prev
= new;
3878 p
->parent
= o
->parent
;
3880 p
->window_end_valid
= Qnil
;
3881 bzero (&p
->last_cursor
, sizeof p
->last_cursor
);
3883 /* Duplicate special geometry settings. */
3885 p
->left_margin_cols
= o
->left_margin_cols
;
3886 p
->right_margin_cols
= o
->right_margin_cols
;
3887 p
->left_fringe_width
= o
->left_fringe_width
;
3888 p
->right_fringe_width
= o
->right_fringe_width
;
3889 p
->fringes_outside_margins
= o
->fringes_outside_margins
;
3890 p
->scroll_bar_width
= o
->scroll_bar_width
;
3891 p
->vertical_scroll_bar_type
= o
->vertical_scroll_bar_type
;
3893 /* Apportion the available frame space among the two new windows */
3895 if (!NILP (horizontal
))
3897 p
->total_lines
= o
->total_lines
;
3898 p
->top_line
= o
->top_line
;
3899 XSETFASTINT (p
->total_cols
, XFASTINT (o
->total_cols
) - size_int
);
3900 XSETFASTINT (o
->total_cols
, size_int
);
3901 XSETFASTINT (p
->left_col
, XFASTINT (o
->left_col
) + size_int
);
3902 adjust_window_margins (p
);
3903 adjust_window_margins (o
);
3907 p
->left_col
= o
->left_col
;
3908 p
->total_cols
= o
->total_cols
;
3909 XSETFASTINT (p
->total_lines
, XFASTINT (o
->total_lines
) - size_int
);
3910 XSETFASTINT (o
->total_lines
, size_int
);
3911 XSETFASTINT (p
->top_line
, XFASTINT (o
->top_line
) + size_int
);
3914 /* Adjust glyph matrices. */
3917 Fset_window_buffer (new, o
->buffer
, Qt
);
3921 DEFUN ("enlarge-window", Fenlarge_window
, Senlarge_window
, 1, 2, "p",
3922 doc
: /* Make selected window SIZE lines taller.
3923 Interactively, if no argument is given, make the selected window one
3924 line taller. If optional argument HORIZONTAL is non-nil, make selected
3925 window wider by SIZE columns. If SIZE is negative, shrink the window by
3926 -SIZE lines or columns. Return nil.
3928 This function can delete windows if they get too small. The size of
3929 fixed size windows is not altered by this function. */)
3931 Lisp_Object size
, horizontal
;
3933 CHECK_NUMBER (size
);
3934 enlarge_window (selected_window
, XINT (size
), !NILP (horizontal
));
3936 run_window_configuration_change_hook (SELECTED_FRAME ());
3941 DEFUN ("shrink-window", Fshrink_window
, Sshrink_window
, 1, 2, "p",
3942 doc
: /* Make selected window SIZE lines smaller.
3943 Interactively, if no argument is given, make the selected window one
3944 line smaller. If optional argument HORIZONTAL is non-nil, make the
3945 window narrower by SIZE columns. If SIZE is negative, enlarge selected
3946 window by -SIZE lines or columns. Return nil.
3948 This function can delete windows if they get too small. The size of
3949 fixed size windows is not altered by this function. */)
3951 Lisp_Object size
, horizontal
;
3953 CHECK_NUMBER (size
);
3954 enlarge_window (selected_window
, -XINT (size
), !NILP (horizontal
));
3956 run_window_configuration_change_hook (SELECTED_FRAME ());
3962 window_height (window
)
3965 register struct window
*p
= XWINDOW (window
);
3966 return WINDOW_TOTAL_LINES (p
);
3970 window_width (window
)
3973 register struct window
*p
= XWINDOW (window
);
3974 return WINDOW_TOTAL_COLS (p
);
3979 *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line))
3981 #define CURSIZE(w) \
3982 *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines))
3985 /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it
3986 horizontally; zero means do it vertically.
3988 Siblings of the selected window are resized to fulfill the size
3989 request. If they become too small in the process, they may be
3993 enlarge_window (window
, delta
, horiz_flag
)
3995 int delta
, horiz_flag
;
3997 Lisp_Object parent
, next
, prev
;
4001 int (*sizefun
) P_ ((Lisp_Object
))
4002 = horiz_flag
? window_width
: window_height
;
4003 void (*setsizefun
) P_ ((Lisp_Object
, int, int))
4004 = (horiz_flag
? set_window_width
: set_window_height
);
4006 /* Give up if this window cannot be resized. */
4007 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4008 error ("Window is not resizable");
4010 /* Find the parent of the selected window. */
4013 p
= XWINDOW (window
);
4019 error ("No other window to side of this one");
4024 ? !NILP (XWINDOW (parent
)->hchild
)
4025 : !NILP (XWINDOW (parent
)->vchild
))
4031 sizep
= &CURSIZE (window
);
4034 register int maxdelta
;
4036 /* Compute the maximum size increment this window can have. */
4038 maxdelta
= (!NILP (parent
) ? (*sizefun
) (parent
) - XINT (*sizep
)
4039 /* This is a main window followed by a minibuffer. */
4040 : !NILP (p
->next
) ? ((*sizefun
) (p
->next
)
4041 - window_min_size (XWINDOW (p
->next
),
4042 horiz_flag
, 0, 0, 0))
4043 /* This is a minibuffer following a main window. */
4044 : !NILP (p
->prev
) ? ((*sizefun
) (p
->prev
)
4045 - window_min_size (XWINDOW (p
->prev
),
4046 horiz_flag
, 0, 0, 0))
4047 /* This is a frame with only one window, a minibuffer-only
4048 or a minibufferless frame. */
4051 if (delta
> maxdelta
)
4052 /* This case traps trying to make the minibuffer
4053 the full frame, or make the only window aside from the
4054 minibuffer the full frame. */
4058 if (XINT (*sizep
) + delta
< window_min_size (XWINDOW (window
),
4059 horiz_flag
, 0, 0, 0))
4061 delete_window (window
);
4068 /* Find the total we can get from other siblings without deleting them. */
4070 for (next
= p
->next
; WINDOWP (next
); next
= XWINDOW (next
)->next
)
4071 maximum
+= (*sizefun
) (next
) - window_min_size (XWINDOW (next
),
4072 horiz_flag
, 0, 0, 0);
4073 for (prev
= p
->prev
; WINDOWP (prev
); prev
= XWINDOW (prev
)->prev
)
4074 maximum
+= (*sizefun
) (prev
) - window_min_size (XWINDOW (prev
),
4075 horiz_flag
, 0, 0, 0);
4077 /* If we can get it all from them without deleting them, do so. */
4078 if (delta
<= maximum
)
4080 Lisp_Object first_unaffected
;
4081 Lisp_Object first_affected
;
4086 first_affected
= window
;
4087 /* Look at one sibling at a time,
4088 moving away from this window in both directions alternately,
4089 and take as much as we can get without deleting that sibling. */
4091 && (!NILP (next
) || !NILP (prev
)))
4095 int this_one
= ((*sizefun
) (next
)
4096 - window_min_size (XWINDOW (next
), horiz_flag
,
4100 if (this_one
> delta
)
4103 (*setsizefun
) (next
, (*sizefun
) (next
) - this_one
, 0);
4104 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4109 next
= XWINDOW (next
)->next
;
4117 int this_one
= ((*sizefun
) (prev
)
4118 - window_min_size (XWINDOW (prev
), horiz_flag
,
4122 if (this_one
> delta
)
4125 first_affected
= prev
;
4127 (*setsizefun
) (prev
, (*sizefun
) (prev
) - this_one
, 0);
4128 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4133 prev
= XWINDOW (prev
)->prev
;
4137 xassert (delta
== 0);
4139 /* Now recalculate the edge positions of all the windows affected,
4140 based on the new sizes. */
4141 first_unaffected
= next
;
4142 prev
= first_affected
;
4143 for (next
= XWINDOW (prev
)->next
; ! EQ (next
, first_unaffected
);
4144 prev
= next
, next
= XWINDOW (next
)->next
)
4146 XSETINT (CURBEG (next
), XINT (CURBEG (prev
)) + (*sizefun
) (prev
));
4147 /* This does not change size of NEXT,
4148 but it propagates the new top edge to its children */
4149 (*setsizefun
) (next
, (*sizefun
) (next
), 0);
4154 register int delta1
;
4155 register int opht
= (*sizefun
) (parent
);
4157 if (opht
<= XINT (*sizep
) + delta
)
4159 /* If trying to grow this window to or beyond size of the parent,
4160 just delete all the sibling windows. */
4161 Lisp_Object start
, tem
, next
;
4163 start
= XWINDOW (parent
)->vchild
;
4165 start
= XWINDOW (parent
)->hchild
;
4167 /* Delete any siblings that come after WINDOW. */
4168 tem
= XWINDOW (window
)->next
;
4169 while (! NILP (tem
))
4171 next
= XWINDOW (tem
)->next
;
4172 delete_window (tem
);
4176 /* Delete any siblings that come after WINDOW.
4177 Note that if START is not WINDOW, then WINDOW still
4178 has siblings, so WINDOW has not yet replaced its parent. */
4180 while (! EQ (tem
, window
))
4182 next
= XWINDOW (tem
)->next
;
4183 delete_window (tem
);
4189 /* Otherwise, make delta1 just right so that if we add
4190 delta1 lines to this window and to the parent, and then
4191 shrink the parent back to its original size, the new
4192 proportional size of this window will increase by delta.
4194 The function size_window will compute the new height h'
4195 of the window from delta1 as:
4198 x = delta1 - delta1/n * n for the 1st resizable child
4201 where n is the number of children that can be resized.
4202 We can ignore x by choosing a delta1 that is a multiple of
4203 n. We want the height of this window to come out as
4213 The number of children n equals the number of resizable
4214 children of this window + 1 because we know window itself
4215 is resizable (otherwise we would have signaled an error).
4217 This reasoning is not correct when other windows become too
4218 small and shrink_windows refuses to delete them. Below we
4219 use resize_proportionally to work around this problem. */
4221 struct window
*w
= XWINDOW (window
);
4225 for (s
= w
->next
; WINDOWP (s
); s
= XWINDOW (s
)->next
)
4226 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4228 for (s
= w
->prev
; WINDOWP (s
); s
= XWINDOW (s
)->prev
)
4229 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4234 /* Add delta1 lines or columns to this window, and to the parent,
4235 keeping things consistent while not affecting siblings. */
4236 XSETINT (CURSIZE (parent
), opht
+ delta1
);
4237 (*setsizefun
) (window
, XINT (*sizep
) + delta1
, 0);
4239 /* Squeeze out delta1 lines or columns from our parent,
4240 shrinking this window and siblings proportionately. This
4241 brings parent back to correct size. Delta1 was calculated
4242 so this makes this window the desired size, taking it all
4243 out of the siblings.
4245 Temporarily set resize_proportionally to Qt to assure that,
4246 if necessary, shrink_windows deletes smaller windows rather
4247 than shrink this window. */
4248 w
->resize_proportionally
= Qt
;
4249 (*setsizefun
) (parent
, opht
, 0);
4250 w
->resize_proportionally
= Qnil
;
4254 XSETFASTINT (p
->last_modified
, 0);
4255 XSETFASTINT (p
->last_overlay_modified
, 0);
4257 /* Adjust glyph matrices. */
4258 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4262 /* Adjust the size of WINDOW by DELTA, moving only its trailing edge.
4263 HORIZ_FLAG nonzero means adjust the width, moving the right edge.
4264 zero means adjust the height, moving the bottom edge.
4266 Following siblings of the selected window are resized to fulfill
4267 the size request. If they become too small in the process, they
4268 are not deleted; instead, we signal an error. */
4271 adjust_window_trailing_edge (window
, delta
, horiz_flag
)
4273 int delta
, horiz_flag
;
4275 Lisp_Object parent
, child
;
4277 Lisp_Object old_config
= Fcurrent_window_configuration (Qnil
);
4278 int delcount
= window_deletion_count
;
4280 CHECK_WINDOW (window
);
4282 /* Give up if this window cannot be resized. */
4283 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4284 error ("Window is not resizable");
4288 Lisp_Object first_parallel
= Qnil
;
4292 /* This happens if WINDOW on the previous iteration was
4293 at top level of the window tree. */
4294 Fset_window_configuration (old_config
);
4295 error ("Specified window edge is fixed");
4298 p
= XWINDOW (window
);
4301 /* See if this level has windows in parallel in the specified
4302 direction. If so, set FIRST_PARALLEL to the first one. */
4305 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->vchild
))
4306 first_parallel
= XWINDOW (parent
)->vchild
;
4307 else if (NILP (parent
) && !NILP (p
->next
))
4309 /* Handle the vertical chain of main window and minibuffer
4310 which has no parent. */
4311 first_parallel
= window
;
4312 while (! NILP (XWINDOW (first_parallel
)->prev
))
4313 first_parallel
= XWINDOW (first_parallel
)->prev
;
4318 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->hchild
))
4319 first_parallel
= XWINDOW (parent
)->hchild
;
4322 /* If this level's succession is in the desired dimension,
4323 and this window is the last one, and there is no higher level,
4324 its trailing edge is fixed. */
4325 if (NILP (XWINDOW (window
)->next
) && NILP (first_parallel
)
4328 Fset_window_configuration (old_config
);
4329 error ("Specified window edge is fixed");
4332 /* Don't make this window too small. */
4333 if (XINT (CURSIZE (window
)) + delta
4334 < window_min_size_2 (XWINDOW (window
), horiz_flag
, 0))
4336 Fset_window_configuration (old_config
);
4337 error ("Cannot adjust window size as specified");
4340 /* Clear out some redisplay caches. */
4341 XSETFASTINT (p
->last_modified
, 0);
4342 XSETFASTINT (p
->last_overlay_modified
, 0);
4344 /* Adjust this window's edge. */
4345 XSETINT (CURSIZE (window
),
4346 XINT (CURSIZE (window
)) + delta
);
4348 /* If this window has following siblings in the desired dimension,
4349 make them smaller, and exit the loop.
4351 (If we reach the top of the tree and can never do this,
4352 we will fail and report an error, above.) */
4353 if (NILP (first_parallel
))
4355 if (!NILP (p
->next
))
4357 /* This may happen for the minibuffer. In that case
4358 the window_deletion_count check below does not work. */
4359 if (XINT (CURSIZE (p
->next
)) - delta
<= 0)
4361 Fset_window_configuration (old_config
);
4362 error ("Cannot adjust window size as specified");
4365 XSETINT (CURBEG (p
->next
),
4366 XINT (CURBEG (p
->next
)) + delta
);
4367 size_window (p
->next
, XINT (CURSIZE (p
->next
)) - delta
,
4368 horiz_flag
, 0, 1, 0);
4373 /* Here we have a chain of parallel siblings, in the other dimension.
4374 Change the size of the other siblings. */
4375 for (child
= first_parallel
;
4377 child
= XWINDOW (child
)->next
)
4378 if (! EQ (child
, window
))
4379 size_window (child
, XINT (CURSIZE (child
)) + delta
,
4380 horiz_flag
, 0, 0, 1);
4385 /* If we made a window so small it got deleted,
4386 we failed. Report failure. */
4387 if (delcount
!= window_deletion_count
)
4389 Fset_window_configuration (old_config
);
4390 error ("Cannot adjust window size as specified");
4393 /* Adjust glyph matrices. */
4394 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4400 DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge
,
4401 Sadjust_window_trailing_edge
, 3, 3, 0,
4402 doc
: /* Adjust the bottom or right edge of WINDOW by DELTA.
4403 If HORIZONTAL is non-nil, that means adjust the width, moving the right edge.
4404 Otherwise, adjust the height, moving the bottom edge.
4406 Following siblings of the selected window are resized to fulfill
4407 the size request. If they become too small in the process, they
4408 are not deleted; instead, we signal an error. */)
4409 (window
, delta
, horizontal
)
4410 Lisp_Object window
, delta
, horizontal
;
4412 CHECK_NUMBER (delta
);
4414 window
= selected_window
;
4415 adjust_window_trailing_edge (window
, XINT (delta
), !NILP (horizontal
));
4417 run_window_configuration_change_hook
4418 (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4425 /***********************************************************************
4426 Resizing Mini-Windows
4427 ***********************************************************************/
4429 static void shrink_window_lowest_first
P_ ((struct window
*, int));
4431 enum save_restore_action
4438 static int save_restore_orig_size
P_ ((struct window
*,
4439 enum save_restore_action
));
4441 /* Shrink windows rooted in window W to HEIGHT. Take the space needed
4442 from lowest windows first. */
4445 shrink_window_lowest_first (w
, height
)
4453 xassert (!MINI_WINDOW_P (w
));
4455 /* Set redisplay hints. */
4456 XSETFASTINT (w
->last_modified
, 0);
4457 XSETFASTINT (w
->last_overlay_modified
, 0);
4458 windows_or_buffers_changed
++;
4459 FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w
))) = 1;
4461 old_height
= XFASTINT (w
->total_lines
);
4462 XSETFASTINT (w
->total_lines
, height
);
4464 if (!NILP (w
->hchild
))
4466 for (child
= w
->hchild
; !NILP (child
); child
= c
->next
)
4468 c
= XWINDOW (child
);
4469 c
->top_line
= w
->top_line
;
4470 shrink_window_lowest_first (c
, height
);
4473 else if (!NILP (w
->vchild
))
4475 Lisp_Object last_child
;
4476 int delta
= old_height
- height
;
4481 /* Find the last child. We are taking space from lowest windows
4482 first, so we iterate over children from the last child
4484 for (child
= w
->vchild
; WINDOWP (child
); child
= XWINDOW (child
)->next
)
4487 /* Size children down to their safe heights. */
4488 for (child
= last_child
; delta
&& !NILP (child
); child
= c
->prev
)
4492 c
= XWINDOW (child
);
4493 this_one
= XFASTINT (c
->total_lines
) - window_min_size_1 (c
, 0, 1);
4495 if (this_one
> delta
)
4498 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
) - this_one
);
4502 /* Compute new positions. */
4503 last_top
= XINT (w
->top_line
);
4504 for (child
= w
->vchild
; !NILP (child
); child
= c
->next
)
4506 c
= XWINDOW (child
);
4507 c
->top_line
= make_number (last_top
);
4508 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
));
4509 last_top
+= XFASTINT (c
->total_lines
);
4515 /* Save, restore, or check positions and sizes in the window tree
4516 rooted at W. ACTION says what to do.
4518 If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and
4519 orig_total_lines members are valid for all windows in the window
4520 tree. Value is non-zero if they are valid.
4522 If ACTION is SAVE_ORIG_SIZES, save members top and height in
4523 orig_top_line and orig_total_lines for all windows in the tree.
4525 If ACTION is RESTORE_ORIG_SIZES, restore top and height from values
4526 stored in orig_top_line and orig_total_lines for all windows. */
4529 save_restore_orig_size (w
, action
)
4531 enum save_restore_action action
;
4537 if (!NILP (w
->hchild
))
4539 if (!save_restore_orig_size (XWINDOW (w
->hchild
), action
))
4542 else if (!NILP (w
->vchild
))
4544 if (!save_restore_orig_size (XWINDOW (w
->vchild
), action
))
4550 case CHECK_ORIG_SIZES
:
4551 if (!INTEGERP (w
->orig_top_line
) || !INTEGERP (w
->orig_total_lines
))
4555 case SAVE_ORIG_SIZES
:
4556 w
->orig_top_line
= w
->top_line
;
4557 w
->orig_total_lines
= w
->total_lines
;
4558 XSETFASTINT (w
->last_modified
, 0);
4559 XSETFASTINT (w
->last_overlay_modified
, 0);
4562 case RESTORE_ORIG_SIZES
:
4563 xassert (INTEGERP (w
->orig_top_line
) && INTEGERP (w
->orig_total_lines
));
4564 w
->top_line
= w
->orig_top_line
;
4565 w
->total_lines
= w
->orig_total_lines
;
4566 w
->orig_total_lines
= w
->orig_top_line
= Qnil
;
4567 XSETFASTINT (w
->last_modified
, 0);
4568 XSETFASTINT (w
->last_overlay_modified
, 0);
4575 w
= NILP (w
->next
) ? NULL
: XWINDOW (w
->next
);
4582 /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
4583 without deleting other windows. */
4586 grow_mini_window (w
, delta
)
4590 struct frame
*f
= XFRAME (w
->frame
);
4591 struct window
*root
;
4593 xassert (MINI_WINDOW_P (w
));
4594 xassert (delta
>= 0);
4596 /* Compute how much we can enlarge the mini-window without deleting
4598 root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4601 int min_height
= window_min_size (root
, 0, 0, 0, 0);
4602 if (XFASTINT (root
->total_lines
) - delta
< min_height
)
4603 /* Note that the root window may already be smaller than
4605 delta
= max (0, XFASTINT (root
->total_lines
) - min_height
);
4610 /* Save original window sizes and positions, if not already done. */
4611 if (!save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4612 save_restore_orig_size (root
, SAVE_ORIG_SIZES
);
4614 /* Shrink other windows. */
4615 shrink_window_lowest_first (root
, XFASTINT (root
->total_lines
) - delta
);
4617 /* Grow the mini-window. */
4618 w
->top_line
= make_number (XFASTINT (root
->top_line
) + XFASTINT (root
->total_lines
));
4619 w
->total_lines
= make_number (XFASTINT (w
->total_lines
) + delta
);
4620 XSETFASTINT (w
->last_modified
, 0);
4621 XSETFASTINT (w
->last_overlay_modified
, 0);
4628 /* Shrink mini-window W. If there is recorded info about window sizes
4629 before a call to grow_mini_window, restore recorded window sizes.
4630 Otherwise, if the mini-window is higher than 1 line, resize it to 1
4634 shrink_mini_window (w
)
4637 struct frame
*f
= XFRAME (w
->frame
);
4638 struct window
*root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4640 if (save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4642 save_restore_orig_size (root
, RESTORE_ORIG_SIZES
);
4644 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
4645 windows_or_buffers_changed
= 1;
4647 else if (XFASTINT (w
->total_lines
) > 1)
4649 /* Distribute the additional lines of the mini-window
4650 among the other windows. */
4652 XSETWINDOW (window
, w
);
4653 enlarge_window (window
, 1 - XFASTINT (w
->total_lines
), 0);
4659 /* Mark window cursors off for all windows in the window tree rooted
4660 at W by setting their phys_cursor_on_p flag to zero. Called from
4661 xterm.c, e.g. when a frame is cleared and thereby all cursors on
4662 the frame are cleared. */
4665 mark_window_cursors_off (w
)
4670 if (!NILP (w
->hchild
))
4671 mark_window_cursors_off (XWINDOW (w
->hchild
));
4672 else if (!NILP (w
->vchild
))
4673 mark_window_cursors_off (XWINDOW (w
->vchild
));
4675 w
->phys_cursor_on_p
= 0;
4677 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
4682 /* Return number of lines of text (not counting mode lines) in W. */
4685 window_internal_height (w
)
4688 int ht
= XFASTINT (w
->total_lines
);
4690 if (!MINI_WINDOW_P (w
))
4692 if (!NILP (w
->parent
)
4693 || !NILP (w
->vchild
)
4694 || !NILP (w
->hchild
)
4697 || WINDOW_WANTS_MODELINE_P (w
))
4700 if (WINDOW_WANTS_HEADER_LINE_P (w
))
4708 /* Return the number of columns in W.
4709 Don't count columns occupied by scroll bars or the vertical bar
4710 separating W from the sibling to its right. */
4713 window_box_text_cols (w
)
4716 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
4717 int width
= XINT (w
->total_cols
);
4719 if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w
))
4720 /* Scroll bars occupy a few columns. */
4721 width
-= WINDOW_CONFIG_SCROLL_BAR_COLS (w
);
4722 else if (!FRAME_WINDOW_P (f
)
4723 && !WINDOW_RIGHTMOST_P (w
) && !WINDOW_FULL_WIDTH_P (w
))
4724 /* The column of `|' characters separating side-by-side windows
4725 occupies one column only. */
4728 if (FRAME_WINDOW_P (f
))
4729 /* On window-systems, fringes and display margins cannot be
4730 used for normal text. */
4731 width
-= (WINDOW_FRINGE_COLS (w
)
4732 + WINDOW_LEFT_MARGIN_COLS (w
)
4733 + WINDOW_RIGHT_MARGIN_COLS (w
));
4739 /************************************************************************
4741 ***********************************************************************/
4743 /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
4744 N screen-fulls, which is defined as the height of the window minus
4745 next_screen_context_lines. If WHOLE is zero, scroll up N lines
4746 instead. Negative values of N mean scroll down. NOERROR non-zero
4747 means don't signal an error if we try to move over BEGV or ZV,
4751 window_scroll (window
, n
, whole
, noerror
)
4759 /* If we must, use the pixel-based version which is much slower than
4760 the line-based one but can handle varying line heights. */
4761 if (FRAME_WINDOW_P (XFRAME (XWINDOW (window
)->frame
)))
4762 window_scroll_pixel_based (window
, n
, whole
, noerror
);
4764 window_scroll_line_based (window
, n
, whole
, noerror
);
4770 /* Implementation of window_scroll that works based on pixel line
4771 heights. See the comment of window_scroll for parameter
4775 window_scroll_pixel_based (window
, n
, whole
, noerror
)
4782 struct window
*w
= XWINDOW (window
);
4783 struct text_pos start
;
4784 int this_scroll_margin
;
4785 /* True if we fiddled the window vscroll field without really scrolling. */
4787 int x
, y
, rtop
, rbot
, rowh
, vpos
;
4789 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
4791 /* If PT is not visible in WINDOW, move back one half of
4792 the screen. Allow PT to be partially visible, otherwise
4793 something like (scroll-down 1) with PT in the line before
4794 the partially visible one would recenter. */
4796 if (!pos_visible_p (w
, PT
, &x
, &y
, &rtop
, &rbot
, &rowh
, &vpos
))
4798 /* Move backward half the height of the window. Performance note:
4799 vmotion used here is about 10% faster, but would give wrong
4800 results for variable height lines. */
4801 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4802 it
.current_y
= it
.last_visible_y
;
4803 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
4805 /* The function move_iterator_vertically may move over more than
4806 the specified y-distance. If it->w is small, e.g. a
4807 mini-buffer window, we may end up in front of the window's
4808 display area. This is the case when Start displaying at the
4809 start of the line containing PT in this case. */
4810 if (it
.current_y
<= 0)
4812 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4813 move_it_vertically_backward (&it
, 0);
4817 start
= it
.current
.pos
;
4819 else if (auto_window_vscroll_p
)
4821 if (rtop
|| rbot
) /* partially visible */
4824 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4826 dy
= max ((window_box_height (w
)
4827 - next_screen_context_lines
* dy
),
4833 /* Only vscroll backwards if already vscrolled forwards. */
4834 if (w
->vscroll
< 0 && rtop
> 0)
4836 px
= max (0, -w
->vscroll
- min (rtop
, -dy
));
4837 Fset_window_vscroll (window
, make_number (px
), Qt
);
4843 /* Do vscroll if already vscrolled or only display line. */
4844 if (rbot
> 0 && (w
->vscroll
< 0 || vpos
== 0))
4846 px
= max (0, -w
->vscroll
+ min (rbot
, dy
));
4847 Fset_window_vscroll (window
, make_number (px
), Qt
);
4851 /* Maybe modify window start instead of scrolling. */
4852 if (rbot
> 0 || w
->vscroll
< 0)
4856 Fset_window_vscroll (window
, make_number (0), Qt
);
4857 /* If there are other text lines above the current row,
4858 move window start to current row. Else to next row. */
4860 spos
= XINT (Fline_beginning_position (Qnil
));
4862 spos
= min (XINT (Fline_end_position (Qnil
)) + 1, ZV
);
4863 set_marker_restricted (w
->start
, make_number (spos
),
4865 w
->start_at_line_beg
= Qt
;
4866 w
->update_mode_line
= Qt
;
4867 XSETFASTINT (w
->last_modified
, 0);
4868 XSETFASTINT (w
->last_overlay_modified
, 0);
4869 /* Set force_start so that redisplay_window will run the
4870 window-scroll-functions. */
4871 w
->force_start
= Qt
;
4876 /* Cancel previous vscroll. */
4877 Fset_window_vscroll (window
, make_number (0), Qt
);
4880 /* If scroll_preserve_screen_position is non-nil, we try to set
4881 point in the same window line as it is now, so get that line. */
4882 if (!NILP (Vscroll_preserve_screen_position
))
4884 /* We preserve the goal pixel coordinate across consecutive
4885 calls to scroll-up or scroll-down. This avoids the
4886 possibility of point becoming "stuck" on a tall line when
4887 scrolling by one line. */
4888 if (window_scroll_pixel_based_preserve_y
< 0
4889 || (!EQ (current_kboard
->Vlast_command
, Qscroll_up
)
4890 && !EQ (current_kboard
->Vlast_command
, Qscroll_down
)))
4892 start_display (&it
, w
, start
);
4893 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4894 window_scroll_pixel_based_preserve_y
= it
.current_y
;
4895 window_scroll_pixel_based_preserve_x
= it
.current_x
;
4899 window_scroll_pixel_based_preserve_y
4900 = window_scroll_pixel_based_preserve_x
= -1;
4902 /* Move iterator it from start the specified distance forward or
4903 backward. The result is the new window start. */
4904 start_display (&it
, w
, start
);
4907 int start_pos
= IT_CHARPOS (it
);
4908 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4909 dy
= max ((window_box_height (w
)
4910 - next_screen_context_lines
* dy
),
4913 /* Note that move_it_vertically always moves the iterator to the
4914 start of a line. So, if the last line doesn't have a newline,
4915 we would end up at the start of the line ending at ZV. */
4918 move_it_vertically_backward (&it
, -dy
);
4919 /* Ensure we actually do move, e.g. in case we are currently
4920 looking at an image that is taller that the window height. */
4921 while (start_pos
== IT_CHARPOS (it
)
4922 && start_pos
> BEGV
)
4923 move_it_by_lines (&it
, -1, 1);
4927 move_it_to (&it
, ZV
, -1, it
.current_y
+ dy
, -1,
4928 MOVE_TO_POS
| MOVE_TO_Y
);
4929 /* Ensure we actually do move, e.g. in case we are currently
4930 looking at an image that is taller that the window height. */
4931 while (start_pos
== IT_CHARPOS (it
)
4933 move_it_by_lines (&it
, 1, 1);
4937 move_it_by_lines (&it
, n
, 1);
4939 /* We failed if we find ZV is already on the screen (scrolling up,
4940 means there's nothing past the end), or if we can't start any
4941 earlier (scrolling down, means there's nothing past the top). */
4942 if ((n
> 0 && IT_CHARPOS (it
) == ZV
)
4943 || (n
< 0 && IT_CHARPOS (it
) == CHARPOS (start
)))
4945 if (IT_CHARPOS (it
) == ZV
)
4947 if (it
.current_y
< it
.last_visible_y
4948 && (it
.current_y
+ it
.max_ascent
+ it
.max_descent
4949 > it
.last_visible_y
))
4951 /* The last line was only partially visible, make it fully
4953 w
->vscroll
= (it
.last_visible_y
4954 - it
.current_y
+ it
.max_ascent
+ it
.max_descent
);
4955 adjust_glyphs (it
.f
);
4959 else if (n
< 0) /* could happen with empty buffers */
4960 xsignal0 (Qbeginning_of_buffer
);
4962 xsignal0 (Qend_of_buffer
);
4966 if (w
->vscroll
!= 0)
4967 /* The first line was only partially visible, make it fully
4973 xsignal0 (Qbeginning_of_buffer
);
4976 /* If control gets here, then we vscrolled. */
4978 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
4980 /* Don't try to change the window start below. */
4986 int pos
= IT_CHARPOS (it
);
4989 /* If in the middle of a multi-glyph character move forward to
4990 the next character. */
4991 if (in_display_vector_p (&it
))
4994 move_it_to (&it
, pos
, -1, -1, -1, MOVE_TO_POS
);
4997 /* Set the window start, and set up the window for redisplay. */
4998 set_marker_restricted (w
->start
, make_number (pos
),
5000 bytepos
= XMARKER (w
->start
)->bytepos
;
5001 w
->start_at_line_beg
= ((pos
== BEGV
|| FETCH_BYTE (bytepos
- 1) == '\n')
5003 w
->update_mode_line
= Qt
;
5004 XSETFASTINT (w
->last_modified
, 0);
5005 XSETFASTINT (w
->last_overlay_modified
, 0);
5006 /* Set force_start so that redisplay_window will run the
5007 window-scroll-functions. */
5008 w
->force_start
= Qt
;
5011 /* The rest of this function uses current_y in a nonstandard way,
5012 not including the height of the header line if any. */
5013 it
.current_y
= it
.vpos
= 0;
5015 /* Move PT out of scroll margins.
5016 This code wants current_y to be zero at the window start position
5017 even if there is a header line. */
5018 this_scroll_margin
= max (0, scroll_margin
);
5019 this_scroll_margin
= min (this_scroll_margin
, XFASTINT (w
->total_lines
) / 4);
5020 this_scroll_margin
*= FRAME_LINE_HEIGHT (it
.f
);
5024 /* We moved the window start towards ZV, so PT may be now
5025 in the scroll margin at the top. */
5026 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
5027 if (IT_CHARPOS (it
) == PT
&& it
.current_y
>= this_scroll_margin
5028 && (NILP (Vscroll_preserve_screen_position
)
5029 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5030 /* We found PT at a legitimate height. Leave it alone. */
5032 else if (window_scroll_pixel_based_preserve_y
>= 0)
5034 /* If we have a header line, take account of it.
5035 This is necessary because we set it.current_y to 0, above. */
5036 move_it_to (&it
, -1,
5037 window_scroll_pixel_based_preserve_x
,
5038 window_scroll_pixel_based_preserve_y
5039 - (WINDOW_WANTS_HEADER_LINE_P (w
) ? 1 : 0 ),
5040 -1, MOVE_TO_Y
| MOVE_TO_X
);
5041 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5045 while (it
.current_y
< this_scroll_margin
)
5047 int prev
= it
.current_y
;
5048 move_it_by_lines (&it
, 1, 1);
5049 if (prev
== it
.current_y
)
5052 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5057 int charpos
, bytepos
;
5060 /* Save our position, for the
5061 window_scroll_pixel_based_preserve_y case. */
5062 charpos
= IT_CHARPOS (it
);
5063 bytepos
= IT_BYTEPOS (it
);
5065 /* We moved the window start towards BEGV, so PT may be now
5066 in the scroll margin at the bottom. */
5067 move_it_to (&it
, PT
, -1,
5068 (it
.last_visible_y
- CURRENT_HEADER_LINE_HEIGHT (w
)
5069 - this_scroll_margin
- 1),
5071 MOVE_TO_POS
| MOVE_TO_Y
);
5073 /* Save our position, in case it's correct. */
5074 charpos
= IT_CHARPOS (it
);
5075 bytepos
= IT_BYTEPOS (it
);
5077 /* See if point is on a partially visible line at the end. */
5078 if (it
.what
== IT_EOB
)
5079 partial_p
= it
.current_y
+ it
.ascent
+ it
.descent
> it
.last_visible_y
;
5082 move_it_by_lines (&it
, 1, 1);
5083 partial_p
= it
.current_y
> it
.last_visible_y
;
5086 if (charpos
== PT
&& !partial_p
5087 && (NILP (Vscroll_preserve_screen_position
)
5088 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5089 /* We found PT before we found the display margin, so PT is ok. */
5091 else if (window_scroll_pixel_based_preserve_y
>= 0)
5093 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5094 start_display (&it
, w
, start
);
5095 /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT
5096 here because we called start_display again and did not
5097 alter it.current_y this time. */
5098 move_it_to (&it
, -1, window_scroll_pixel_based_preserve_x
,
5099 window_scroll_pixel_based_preserve_y
, -1,
5100 MOVE_TO_Y
| MOVE_TO_X
);
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 Lisp_Object original_pos
= Qnil
;
5140 /* If scrolling screen-fulls, compute the number of lines to
5141 scroll from the window's height. */
5143 n
*= max (1, ht
- next_screen_context_lines
);
5145 startpos
= marker_position (w
->start
);
5147 if (!NILP (Vscroll_preserve_screen_position
))
5149 if (window_scroll_preserve_vpos
<= 0
5150 || (!EQ (current_kboard
->Vlast_command
, Qscroll_up
)
5151 && !EQ (current_kboard
->Vlast_command
, Qscroll_down
)))
5153 struct position posit
5154 = *compute_motion (startpos
, 0, 0, 0,
5156 -1, XINT (w
->hscroll
),
5158 window_scroll_preserve_vpos
= posit
.vpos
;
5159 window_scroll_preserve_hpos
= posit
.hpos
+ XINT (w
->hscroll
);
5162 original_pos
= Fcons (make_number (window_scroll_preserve_hpos
),
5163 make_number (window_scroll_preserve_vpos
));
5166 XSETFASTINT (tem
, PT
);
5167 tem
= Fpos_visible_in_window_p (tem
, window
, Qnil
);
5171 Fvertical_motion (make_number (- (ht
/ 2)), window
);
5176 lose
= n
< 0 && PT
== BEGV
;
5177 Fvertical_motion (make_number (n
), window
);
5181 SET_PT_BOTH (opoint
, opoint_byte
);
5188 xsignal0 (Qbeginning_of_buffer
);
5193 int this_scroll_margin
= scroll_margin
;
5195 /* Don't use a scroll margin that is negative or too large. */
5196 if (this_scroll_margin
< 0)
5197 this_scroll_margin
= 0;
5199 if (XINT (w
->total_lines
) < 4 * scroll_margin
)
5200 this_scroll_margin
= XINT (w
->total_lines
) / 4;
5202 set_marker_restricted_both (w
->start
, w
->buffer
, pos
, pos_byte
);
5203 w
->start_at_line_beg
= bolp
;
5204 w
->update_mode_line
= Qt
;
5205 XSETFASTINT (w
->last_modified
, 0);
5206 XSETFASTINT (w
->last_overlay_modified
, 0);
5207 /* Set force_start so that redisplay_window will run
5208 the window-scroll-functions. */
5209 w
->force_start
= Qt
;
5211 if (!NILP (Vscroll_preserve_screen_position
)
5212 && (whole
|| !EQ (Vscroll_preserve_screen_position
, Qt
)))
5214 SET_PT_BOTH (pos
, pos_byte
);
5215 Fvertical_motion (original_pos
, window
);
5217 /* If we scrolled forward, put point enough lines down
5218 that it is outside the scroll margin. */
5223 if (this_scroll_margin
> 0)
5225 SET_PT_BOTH (pos
, pos_byte
);
5226 Fvertical_motion (make_number (this_scroll_margin
), window
);
5232 if (top_margin
<= opoint
)
5233 SET_PT_BOTH (opoint
, opoint_byte
);
5234 else if (!NILP (Vscroll_preserve_screen_position
))
5236 SET_PT_BOTH (pos
, pos_byte
);
5237 Fvertical_motion (original_pos
, window
);
5240 SET_PT (top_margin
);
5246 /* If we scrolled backward, put point near the end of the window
5247 but not within the scroll margin. */
5248 SET_PT_BOTH (pos
, pos_byte
);
5249 tem
= Fvertical_motion (make_number (ht
- this_scroll_margin
), window
);
5250 if (XFASTINT (tem
) == ht
- this_scroll_margin
)
5253 bottom_margin
= PT
+ 1;
5255 if (bottom_margin
> opoint
)
5256 SET_PT_BOTH (opoint
, opoint_byte
);
5259 if (!NILP (Vscroll_preserve_screen_position
))
5261 SET_PT_BOTH (pos
, pos_byte
);
5262 Fvertical_motion (original_pos
, window
);
5265 Fvertical_motion (make_number (-1), window
);
5274 xsignal0 (Qend_of_buffer
);
5279 /* Scroll selected_window up or down. If N is nil, scroll a
5280 screen-full which is defined as the height of the window minus
5281 next_screen_context_lines. If N is the symbol `-', scroll.
5282 DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
5283 up. This is the guts of Fscroll_up and Fscroll_down. */
5286 scroll_command (n
, direction
)
5290 int count
= SPECPDL_INDEX ();
5292 xassert (eabs (direction
) == 1);
5294 /* If selected window's buffer isn't current, make it current for
5295 the moment. But don't screw up if window_scroll gets an error. */
5296 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
5298 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5299 Fset_buffer (XWINDOW (selected_window
)->buffer
);
5301 /* Make redisplay consider other windows than just selected_window. */
5302 ++windows_or_buffers_changed
;
5306 window_scroll (selected_window
, direction
, 1, 0);
5307 else if (EQ (n
, Qminus
))
5308 window_scroll (selected_window
, -direction
, 1, 0);
5311 n
= Fprefix_numeric_value (n
);
5312 window_scroll (selected_window
, XINT (n
) * direction
, 0, 0);
5315 unbind_to (count
, Qnil
);
5318 DEFUN ("scroll-up", Fscroll_up
, Sscroll_up
, 0, 1, "^P",
5319 doc
: /* Scroll text of selected window upward ARG lines.
5320 If ARG is omitted or nil, scroll upward by a near full screen.
5321 A near full screen is `next-screen-context-lines' less than a full screen.
5322 Negative ARG means scroll downward.
5323 If ARG is the atom `-', scroll downward by nearly full screen.
5324 When calling from a program, supply as argument a number, nil, or `-'. */)
5328 scroll_command (arg
, 1);
5332 DEFUN ("scroll-down", Fscroll_down
, Sscroll_down
, 0, 1, "^P",
5333 doc
: /* Scroll text of selected window down ARG lines.
5334 If ARG is omitted or nil, scroll down by a near full screen.
5335 A near full screen is `next-screen-context-lines' less than a full screen.
5336 Negative ARG means scroll upward.
5337 If ARG is the atom `-', scroll upward by nearly full screen.
5338 When calling from a program, supply as argument a number, nil, or `-'. */)
5342 scroll_command (arg
, -1);
5346 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling
, Sother_window_for_scrolling
, 0, 0, 0,
5347 doc
: /* Return the other window for \"other window scroll\" commands.
5348 If `other-window-scroll-buffer' is non-nil, a window
5349 showing that buffer is used.
5350 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5351 specifies the window. This takes precedence over
5352 `other-window-scroll-buffer'. */)
5357 if (MINI_WINDOW_P (XWINDOW (selected_window
))
5358 && !NILP (Vminibuf_scroll_window
))
5359 window
= Vminibuf_scroll_window
;
5360 /* If buffer is specified, scroll that buffer. */
5361 else if (!NILP (Vother_window_scroll_buffer
))
5363 window
= Fget_buffer_window (Vother_window_scroll_buffer
, Qnil
);
5365 window
= display_buffer (Vother_window_scroll_buffer
, Qt
, Qnil
);
5369 /* Nothing specified; look for a neighboring window on the same
5371 window
= Fnext_window (selected_window
, Qnil
, Qnil
);
5373 if (EQ (window
, selected_window
))
5374 /* That didn't get us anywhere; look for a window on another
5377 window
= Fnext_window (window
, Qnil
, Qt
);
5378 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window
))))
5379 && ! EQ (window
, selected_window
));
5382 CHECK_LIVE_WINDOW (window
);
5384 if (EQ (window
, selected_window
))
5385 error ("There is no other window");
5390 DEFUN ("scroll-other-window", Fscroll_other_window
, Sscroll_other_window
, 0, 1, "P",
5391 doc
: /* Scroll next window upward ARG lines; or near full screen if no ARG.
5392 A near full screen is `next-screen-context-lines' less than a full screen.
5393 The next window is the one below the current one; or the one at the top
5394 if the current one is at the bottom. Negative ARG means scroll downward.
5395 If ARG is the atom `-', scroll downward by nearly full screen.
5396 When calling from a program, supply as argument a number, nil, or `-'.
5398 If `other-window-scroll-buffer' is non-nil, scroll the window
5399 showing that buffer, popping the buffer up if necessary.
5400 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5401 specifies the window to scroll. This takes precedence over
5402 `other-window-scroll-buffer'. */)
5408 int count
= SPECPDL_INDEX ();
5410 window
= Fother_window_for_scrolling ();
5411 w
= XWINDOW (window
);
5413 /* Don't screw up if window_scroll gets an error. */
5414 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5415 ++windows_or_buffers_changed
;
5417 Fset_buffer (w
->buffer
);
5418 SET_PT (marker_position (w
->pointm
));
5421 window_scroll (window
, 1, 1, 1);
5422 else if (EQ (arg
, Qminus
))
5423 window_scroll (window
, -1, 1, 1);
5429 window_scroll (window
, XINT (arg
), 0, 1);
5432 set_marker_both (w
->pointm
, Qnil
, PT
, PT_BYTE
);
5433 unbind_to (count
, Qnil
);
5438 DEFUN ("scroll-left", Fscroll_left
, Sscroll_left
, 0, 2, "^P\np",
5439 doc
: /* Scroll selected window display ARG columns left.
5440 Default for ARG is window width minus 2.
5441 Value is the total amount of leftward horizontal scrolling in
5442 effect after the change.
5443 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5444 lower bound for automatic scrolling, i.e. automatic scrolling
5445 will not scroll a window to a column less than the value returned
5446 by this function. This happens in an interactive call. */)
5448 register Lisp_Object arg
, set_minimum
;
5452 struct window
*w
= XWINDOW (selected_window
);
5455 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5457 arg
= Fprefix_numeric_value (arg
);
5459 hscroll
= XINT (w
->hscroll
) + XINT (arg
);
5460 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5462 if (!NILP (set_minimum
))
5463 w
->min_hscroll
= w
->hscroll
;
5468 DEFUN ("scroll-right", Fscroll_right
, Sscroll_right
, 0, 2, "^P\np",
5469 doc
: /* Scroll selected window display ARG columns right.
5470 Default for ARG is window width minus 2.
5471 Value is the total amount of leftward horizontal scrolling in
5472 effect after the change.
5473 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5474 lower bound for automatic scrolling, i.e. automatic scrolling
5475 will not scroll a window to a column less than the value returned
5476 by this function. This happens in an interactive call. */)
5478 register Lisp_Object arg
, set_minimum
;
5482 struct window
*w
= XWINDOW (selected_window
);
5485 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5487 arg
= Fprefix_numeric_value (arg
);
5489 hscroll
= XINT (w
->hscroll
) - XINT (arg
);
5490 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5492 if (!NILP (set_minimum
))
5493 w
->min_hscroll
= w
->hscroll
;
5498 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window
, Sminibuffer_selected_window
, 0, 0, 0,
5499 doc
: /* Return the window which was selected when entering the minibuffer.
5500 Returns nil, if selected window is not a minibuffer window. */)
5503 if (minibuf_level
> 0
5504 && MINI_WINDOW_P (XWINDOW (selected_window
))
5505 && WINDOW_LIVE_P (minibuf_selected_window
))
5506 return minibuf_selected_window
;
5511 /* Value is the number of lines actually displayed in window W,
5512 as opposed to its height. */
5515 displayed_window_lines (w
)
5519 struct text_pos start
;
5520 int height
= window_box_height (w
);
5521 struct buffer
*old_buffer
;
5524 if (XBUFFER (w
->buffer
) != current_buffer
)
5526 old_buffer
= current_buffer
;
5527 set_buffer_internal (XBUFFER (w
->buffer
));
5532 /* In case W->start is out of the accessible range, do something
5533 reasonable. This happens in Info mode when Info-scroll-down
5534 calls (recenter -1) while W->start is 1. */
5535 if (XMARKER (w
->start
)->charpos
< BEGV
)
5536 SET_TEXT_POS (start
, BEGV
, BEGV_BYTE
);
5537 else if (XMARKER (w
->start
)->charpos
> ZV
)
5538 SET_TEXT_POS (start
, ZV
, ZV_BYTE
);
5540 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5542 start_display (&it
, w
, start
);
5543 move_it_vertically (&it
, height
);
5544 bottom_y
= line_bottom_y (&it
);
5546 /* rms: On a non-window display,
5547 the value of it.vpos at the bottom of the screen
5548 seems to be 1 larger than window_box_height (w).
5549 This kludge fixes a bug whereby (move-to-window-line -1)
5550 when ZV is on the last screen line
5551 moves to the previous screen line instead of the last one. */
5552 if (! FRAME_WINDOW_P (XFRAME (w
->frame
)))
5555 /* Add in empty lines at the bottom of the window. */
5556 if (bottom_y
< height
)
5558 int uy
= FRAME_LINE_HEIGHT (it
.f
);
5559 it
.vpos
+= (height
- bottom_y
+ uy
- 1) / uy
;
5563 set_buffer_internal (old_buffer
);
5569 DEFUN ("recenter", Frecenter
, Srecenter
, 0, 1, "P",
5570 doc
: /* Center point in selected window and redisplay frame.
5571 With prefix argument ARG, recenter putting point on screen line ARG
5572 relative to the selected window. If ARG is negative, it counts up from the
5573 bottom of the window. (ARG should be less than the height of the window.)
5575 If ARG is omitted or nil, erase the entire frame and then redraw with point
5576 in the center of the selected window. If `auto-resize-tool-bars' is set to
5577 `grow-only', this resets the tool-bar's height to the minimum height needed.
5579 Just C-u as prefix means put point in the center of the window
5580 and redisplay normally--don't erase and redraw the frame. */)
5582 register Lisp_Object arg
;
5584 struct window
*w
= XWINDOW (selected_window
);
5585 struct buffer
*buf
= XBUFFER (w
->buffer
);
5586 struct buffer
*obuf
= current_buffer
;
5588 int charpos
, bytepos
;
5590 int this_scroll_margin
;
5592 /* If redisplay is suppressed due to an error, try again. */
5593 obuf
->display_error_modiff
= 0;
5599 /* Invalidate pixel data calculated for all compositions. */
5600 for (i
= 0; i
< n_compositions
; i
++)
5601 composition_table
[i
]->font
= NULL
;
5603 WINDOW_XFRAME (w
)->minimize_tool_bar_window_p
= 1;
5605 Fredraw_frame (WINDOW_FRAME (w
));
5606 SET_FRAME_GARBAGED (WINDOW_XFRAME (w
));
5609 else if (CONSP (arg
)) /* Just C-u. */
5613 arg
= Fprefix_numeric_value (arg
);
5618 set_buffer_internal (buf
);
5620 /* Do this after making BUF current
5621 in case scroll_margin is buffer-local. */
5622 this_scroll_margin
= max (0, scroll_margin
);
5623 this_scroll_margin
= min (this_scroll_margin
,
5624 XFASTINT (w
->total_lines
) / 4);
5626 /* Handle centering on a graphical frame specially. Such frames can
5627 have variable-height lines and centering point on the basis of
5628 line counts would lead to strange effects. */
5629 if (FRAME_WINDOW_P (XFRAME (w
->frame
)))
5636 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5637 start_display (&it
, w
, pt
);
5638 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
5639 charpos
= IT_CHARPOS (it
);
5640 bytepos
= IT_BYTEPOS (it
);
5647 int extra_line_spacing
;
5648 int h
= window_box_height (w
);
5650 iarg
= - max (-iarg
, this_scroll_margin
);
5652 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5653 start_display (&it
, w
, pt
);
5655 /* Be sure we have the exact height of the full line containing PT. */
5656 move_it_by_lines (&it
, 0, 1);
5658 /* The amount of pixels we have to move back is the window
5659 height minus what's displayed in the line containing PT,
5660 and the lines below. */
5663 move_it_by_lines (&it
, nlines
, 1);
5665 if (it
.vpos
== nlines
)
5669 /* Last line has no newline */
5670 h
-= line_bottom_y (&it
);
5674 /* Don't reserve space for extra line spacing of last line. */
5675 extra_line_spacing
= it
.max_extra_line_spacing
;
5677 /* If we can't move down NLINES lines because we hit
5678 the end of the buffer, count in some empty lines. */
5679 if (it
.vpos
< nlines
)
5682 extra_line_spacing
= it
.extra_line_spacing
;
5683 h
-= nlines
* (FRAME_LINE_HEIGHT (it
.f
) + extra_line_spacing
);
5688 /* Now find the new top line (starting position) of the window. */
5689 start_display (&it
, w
, pt
);
5691 move_it_vertically_backward (&it
, h
);
5693 /* If extra line spacing is present, we may move too far
5694 back. This causes the last line to be only partially
5695 visible (which triggers redisplay to recenter that line
5696 in the middle), so move forward.
5697 But ignore extra line spacing on last line, as it is not
5698 considered to be part of the visible height of the line.
5700 h
+= extra_line_spacing
;
5701 while (-it
.current_y
> h
)
5702 move_it_by_lines (&it
, 1, 1);
5704 charpos
= IT_CHARPOS (it
);
5705 bytepos
= IT_BYTEPOS (it
);
5709 struct position pos
;
5711 iarg
= max (iarg
, this_scroll_margin
);
5713 pos
= *vmotion (PT
, -iarg
, w
);
5714 charpos
= pos
.bufpos
;
5715 bytepos
= pos
.bytepos
;
5720 struct position pos
;
5721 int ht
= window_internal_height (w
);
5728 /* Don't let it get into the margin at either top or bottom. */
5729 iarg
= max (iarg
, this_scroll_margin
);
5730 iarg
= min (iarg
, ht
- this_scroll_margin
- 1);
5732 pos
= *vmotion (PT
, - iarg
, w
);
5733 charpos
= pos
.bufpos
;
5734 bytepos
= pos
.bytepos
;
5737 /* Set the new window start. */
5738 set_marker_both (w
->start
, w
->buffer
, charpos
, bytepos
);
5739 w
->window_end_valid
= Qnil
;
5741 w
->optional_new_start
= Qt
;
5743 if (bytepos
== BEGV_BYTE
|| FETCH_BYTE (bytepos
- 1) == '\n')
5744 w
->start_at_line_beg
= Qt
;
5746 w
->start_at_line_beg
= Qnil
;
5748 set_buffer_internal (obuf
);
5753 DEFUN ("window-text-height", Fwindow_text_height
, Swindow_text_height
,
5755 doc
: /* Return the height in lines of the text display area of WINDOW.
5756 WINDOW defaults to the selected window.
5757 This doesn't include the mode-line (or header-line if any) or any
5758 partial-height lines in the text display area. */)
5762 struct window
*w
= decode_window (window
);
5763 int pixel_height
= window_box_height (w
);
5764 int line_height
= pixel_height
/ FRAME_LINE_HEIGHT (XFRAME (w
->frame
));
5765 return make_number (line_height
);
5770 DEFUN ("move-to-window-line", Fmove_to_window_line
, Smove_to_window_line
,
5772 doc
: /* Position point relative to window.
5773 With no argument, position point at center of window.
5774 An argument specifies vertical position within the window;
5775 zero means top of window, negative means relative to bottom of window. */)
5779 struct window
*w
= XWINDOW (selected_window
);
5783 int this_scroll_margin
;
5786 window
= selected_window
;
5787 start
= marker_position (w
->start
);
5788 if (start
< BEGV
|| start
> ZV
)
5790 int height
= window_internal_height (w
);
5791 Fvertical_motion (make_number (- (height
/ 2)), window
);
5792 set_marker_both (w
->start
, w
->buffer
, PT
, PT_BYTE
);
5793 w
->start_at_line_beg
= Fbolp ();
5794 w
->force_start
= Qt
;
5797 Fgoto_char (w
->start
);
5799 lines
= displayed_window_lines (w
);
5802 this_scroll_margin
= max (0, scroll_margin
);
5803 this_scroll_margin
= min (this_scroll_margin
, lines
/ 4);
5807 XSETFASTINT (arg
, lines
/ 2);
5810 int iarg
= XINT (Fprefix_numeric_value (arg
));
5813 iarg
= iarg
+ lines
;
5815 #if 0 /* This code would prevent move-to-window-line from moving point
5816 to a place inside the scroll margins (which would cause the
5817 next redisplay to scroll). I wrote this code, but then concluded
5818 it is probably better not to install it. However, it is here
5819 inside #if 0 so as not to lose it. -- rms. */
5821 /* Don't let it get into the margin at either top or bottom. */
5822 iarg
= max (iarg
, this_scroll_margin
);
5823 iarg
= min (iarg
, lines
- this_scroll_margin
- 1);
5826 arg
= make_number (iarg
);
5829 /* Skip past a partially visible first line. */
5831 XSETINT (arg
, XINT (arg
) + 1);
5833 return Fvertical_motion (arg
, window
);
5838 /***********************************************************************
5839 Window Configuration
5840 ***********************************************************************/
5842 struct save_window_data
5845 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5846 Lisp_Object selected_frame
;
5847 Lisp_Object current_window
;
5848 Lisp_Object current_buffer
;
5849 Lisp_Object minibuf_scroll_window
;
5850 Lisp_Object minibuf_selected_window
;
5851 Lisp_Object root_window
;
5852 Lisp_Object focus_frame
;
5853 /* A vector, each of whose elements is a struct saved_window
5855 Lisp_Object saved_windows
;
5857 /* All fields above are traced by the GC.
5858 From `fame-cols' down, the fields are ignored by the GC. */
5860 int frame_cols
, frame_lines
, frame_menu_bar_lines
;
5861 int frame_tool_bar_lines
;
5864 /* This is saved as a Lisp_Vector */
5867 /* these first two must agree with struct Lisp_Vector in lisp.h */
5869 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5872 Lisp_Object buffer
, start
, pointm
, mark
;
5873 Lisp_Object left_col
, top_line
, total_cols
, total_lines
;
5874 Lisp_Object hscroll
, min_hscroll
;
5875 Lisp_Object parent
, prev
;
5876 Lisp_Object start_at_line_beg
;
5877 Lisp_Object display_table
;
5878 Lisp_Object orig_top_line
, orig_total_lines
;
5879 Lisp_Object left_margin_cols
, right_margin_cols
;
5880 Lisp_Object left_fringe_width
, right_fringe_width
, fringes_outside_margins
;
5881 Lisp_Object scroll_bar_width
, vertical_scroll_bar_type
;
5882 Lisp_Object dedicated
, resize_proportionally
;
5885 #define SAVED_WINDOW_N(swv,n) \
5886 ((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
5888 DEFUN ("window-configuration-p", Fwindow_configuration_p
, Swindow_configuration_p
, 1, 1, 0,
5889 doc
: /* Return t if OBJECT is a window-configuration object. */)
5893 return WINDOW_CONFIGURATIONP (object
) ? Qt
: Qnil
;
5896 DEFUN ("window-configuration-frame", Fwindow_configuration_frame
, Swindow_configuration_frame
, 1, 1, 0,
5897 doc
: /* Return the frame that CONFIG, a window-configuration object, is about. */)
5901 register struct save_window_data
*data
;
5902 struct Lisp_Vector
*saved_windows
;
5904 CHECK_WINDOW_CONFIGURATION (config
);
5906 data
= (struct save_window_data
*) XVECTOR (config
);
5907 saved_windows
= XVECTOR (data
->saved_windows
);
5908 return XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5911 DEFUN ("set-window-configuration", Fset_window_configuration
,
5912 Sset_window_configuration
, 1, 1, 0,
5913 doc
: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
5914 CONFIGURATION must be a value previously returned
5915 by `current-window-configuration' (which see).
5916 If CONFIGURATION was made from a frame that is now deleted,
5917 only frame-independent values can be restored. In this case,
5918 the return value is nil. Otherwise the value is t. */)
5920 Lisp_Object configuration
;
5922 register struct save_window_data
*data
;
5923 struct Lisp_Vector
*saved_windows
;
5924 Lisp_Object new_current_buffer
;
5929 CHECK_WINDOW_CONFIGURATION (configuration
);
5931 data
= (struct save_window_data
*) XVECTOR (configuration
);
5932 saved_windows
= XVECTOR (data
->saved_windows
);
5934 new_current_buffer
= data
->current_buffer
;
5935 if (NILP (XBUFFER (new_current_buffer
)->name
))
5936 new_current_buffer
= Qnil
;
5939 if (XBUFFER (new_current_buffer
) == current_buffer
)
5940 /* The code further down "preserves point" by saving here PT in
5941 old_point and then setting it later back into PT. When the
5942 current-selected-window and the final-selected-window both show
5943 the current buffer, this suffers from the problem that the
5944 current PT is the window-point of the current-selected-window,
5945 while the final PT is the point of the final-selected-window, so
5946 this copy from one PT to the other would end up moving the
5947 window-point of the final-selected-window to the window-point of
5948 the current-selected-window. So we have to be careful which
5949 point of the current-buffer we copy into old_point. */
5950 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5951 && WINDOWP (selected_window
)
5952 && EQ (XWINDOW (selected_window
)->buffer
, new_current_buffer
)
5953 && !EQ (selected_window
, data
->current_window
))
5954 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5958 /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of
5959 point in new_current_buffer as of the last time this buffer was
5960 used. This can be non-deterministic since it can be changed by
5961 things like jit-lock by mere temporary selection of some random
5962 window that happens to show this buffer.
5963 So if possible we want this arbitrary choice of "which point" to
5964 be the one from the to-be-selected-window so as to prevent this
5965 window's cursor from being copied from another window. */
5966 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5967 /* If current_window = selected_window, its point is in BUF_PT. */
5968 && !EQ (selected_window
, data
->current_window
))
5969 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5971 old_point
= BUF_PT (XBUFFER (new_current_buffer
));
5974 frame
= XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5977 /* If f is a dead frame, don't bother rebuilding its window tree.
5978 However, there is other stuff we should still try to do below. */
5979 if (FRAME_LIVE_P (f
))
5981 register struct window
*w
;
5982 register struct saved_window
*p
;
5983 struct window
*root_window
;
5984 struct window
**leaf_windows
;
5988 /* If the frame has been resized since this window configuration was
5989 made, we change the frame to the size specified in the
5990 configuration, restore the configuration, and then resize it
5991 back. We keep track of the prevailing height in these variables. */
5992 int previous_frame_lines
= FRAME_LINES (f
);
5993 int previous_frame_cols
= FRAME_COLS (f
);
5994 int previous_frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
5995 int previous_frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
5997 /* The mouse highlighting code could get screwed up
5998 if it runs during this. */
6001 if (data
->frame_lines
!= previous_frame_lines
6002 || data
->frame_cols
!= previous_frame_cols
)
6003 change_frame_size (f
, data
->frame_lines
,
6004 data
->frame_cols
, 0, 0, 0);
6005 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
6006 if (data
->frame_menu_bar_lines
6007 != previous_frame_menu_bar_lines
)
6008 x_set_menu_bar_lines (f
, make_number (data
->frame_menu_bar_lines
),
6010 #ifdef HAVE_WINDOW_SYSTEM
6011 if (data
->frame_tool_bar_lines
6012 != previous_frame_tool_bar_lines
)
6013 x_set_tool_bar_lines (f
, make_number (data
->frame_tool_bar_lines
),
6018 /* "Swap out" point from the selected window's buffer
6019 into the window itself. (Normally the pointm of the selected
6020 window holds garbage.) We do this now, before
6021 restoring the window contents, and prevent it from
6022 being done later on when we select a new window. */
6023 if (! NILP (XWINDOW (selected_window
)->buffer
))
6025 w
= XWINDOW (selected_window
);
6026 set_marker_both (w
->pointm
,
6028 BUF_PT (XBUFFER (w
->buffer
)),
6029 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6032 windows_or_buffers_changed
++;
6033 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
6035 /* Problem: Freeing all matrices and later allocating them again
6036 is a serious redisplay flickering problem. What we would
6037 really like to do is to free only those matrices not reused
6039 root_window
= XWINDOW (FRAME_ROOT_WINDOW (f
));
6041 = (struct window
**) alloca (count_windows (root_window
)
6042 * sizeof (struct window
*));
6043 n_leaf_windows
= get_leaf_windows (root_window
, leaf_windows
, 0);
6046 Mark all windows now on frame as "deleted".
6047 Restoring the new configuration "undeletes" any that are in it.
6049 Save their current buffers in their height fields, since we may
6050 need it later, if a buffer saved in the configuration is now
6052 delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6054 for (k
= 0; k
< saved_windows
->size
; k
++)
6056 p
= SAVED_WINDOW_N (saved_windows
, k
);
6057 w
= XWINDOW (p
->window
);
6060 if (!NILP (p
->parent
))
6061 w
->parent
= SAVED_WINDOW_N (saved_windows
,
6062 XFASTINT (p
->parent
))->window
;
6066 if (!NILP (p
->prev
))
6068 w
->prev
= SAVED_WINDOW_N (saved_windows
,
6069 XFASTINT (p
->prev
))->window
;
6070 XWINDOW (w
->prev
)->next
= p
->window
;
6075 if (!NILP (w
->parent
))
6077 if (EQ (p
->total_cols
, XWINDOW (w
->parent
)->total_cols
))
6079 XWINDOW (w
->parent
)->vchild
= p
->window
;
6080 XWINDOW (w
->parent
)->hchild
= Qnil
;
6084 XWINDOW (w
->parent
)->hchild
= p
->window
;
6085 XWINDOW (w
->parent
)->vchild
= Qnil
;
6090 /* If we squirreled away the buffer in the window's height,
6092 if (BUFFERP (w
->total_lines
))
6093 w
->buffer
= w
->total_lines
;
6094 w
->left_col
= p
->left_col
;
6095 w
->top_line
= p
->top_line
;
6096 w
->total_cols
= p
->total_cols
;
6097 w
->total_lines
= p
->total_lines
;
6098 w
->hscroll
= p
->hscroll
;
6099 w
->min_hscroll
= p
->min_hscroll
;
6100 w
->display_table
= p
->display_table
;
6101 w
->orig_top_line
= p
->orig_top_line
;
6102 w
->orig_total_lines
= p
->orig_total_lines
;
6103 w
->left_margin_cols
= p
->left_margin_cols
;
6104 w
->right_margin_cols
= p
->right_margin_cols
;
6105 w
->left_fringe_width
= p
->left_fringe_width
;
6106 w
->right_fringe_width
= p
->right_fringe_width
;
6107 w
->fringes_outside_margins
= p
->fringes_outside_margins
;
6108 w
->scroll_bar_width
= p
->scroll_bar_width
;
6109 w
->vertical_scroll_bar_type
= p
->vertical_scroll_bar_type
;
6110 w
->dedicated
= p
->dedicated
;
6111 w
->resize_proportionally
= p
->resize_proportionally
;
6112 XSETFASTINT (w
->last_modified
, 0);
6113 XSETFASTINT (w
->last_overlay_modified
, 0);
6115 /* Reinstall the saved buffer and pointers into it. */
6116 if (NILP (p
->buffer
))
6117 w
->buffer
= p
->buffer
;
6120 if (!NILP (XBUFFER (p
->buffer
)->name
))
6121 /* If saved buffer is alive, install it. */
6123 w
->buffer
= p
->buffer
;
6124 w
->start_at_line_beg
= p
->start_at_line_beg
;
6125 set_marker_restricted (w
->start
, p
->start
, w
->buffer
);
6126 set_marker_restricted (w
->pointm
, p
->pointm
, w
->buffer
);
6127 Fset_marker (XBUFFER (w
->buffer
)->mark
,
6128 p
->mark
, w
->buffer
);
6130 /* As documented in Fcurrent_window_configuration, don't
6131 restore the location of point in the buffer which was
6132 current when the window configuration was recorded. */
6133 if (!EQ (p
->buffer
, new_current_buffer
)
6134 && XBUFFER (p
->buffer
) == current_buffer
)
6135 Fgoto_char (w
->pointm
);
6137 else if (NILP (w
->buffer
) || NILP (XBUFFER (w
->buffer
)->name
))
6138 /* Else unless window has a live buffer, get one. */
6140 w
->buffer
= Fcdr (Fcar (Vbuffer_alist
));
6141 /* This will set the markers to beginning of visible
6143 set_marker_restricted (w
->start
, make_number (0), w
->buffer
);
6144 set_marker_restricted (w
->pointm
, make_number (0),w
->buffer
);
6145 w
->start_at_line_beg
= Qt
;
6148 /* Keeping window's old buffer; make sure the markers
6151 /* Set window markers at start of visible range. */
6152 if (XMARKER (w
->start
)->buffer
== 0)
6153 set_marker_restricted (w
->start
, make_number (0),
6155 if (XMARKER (w
->pointm
)->buffer
== 0)
6156 set_marker_restricted_both (w
->pointm
, w
->buffer
,
6157 BUF_PT (XBUFFER (w
->buffer
)),
6158 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6159 w
->start_at_line_beg
= Qt
;
6164 FRAME_ROOT_WINDOW (f
) = data
->root_window
;
6165 /* Prevent "swapping out point" in the old selected window
6166 using the buffer that has been restored into it.
6167 We already swapped out point that from that window's old buffer. */
6168 selected_window
= Qnil
;
6170 /* Arrange *not* to restore point in the buffer that was
6171 current when the window configuration was saved. */
6172 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
))
6173 set_marker_restricted (XWINDOW (data
->current_window
)->pointm
,
6174 make_number (old_point
),
6175 XWINDOW (data
->current_window
)->buffer
);
6177 Fselect_window (data
->current_window
, Qnil
);
6178 XBUFFER (XWINDOW (selected_window
)->buffer
)->last_selected_window
6181 if (NILP (data
->focus_frame
)
6182 || (FRAMEP (data
->focus_frame
)
6183 && FRAME_LIVE_P (XFRAME (data
->focus_frame
))))
6184 Fredirect_frame_focus (frame
, data
->focus_frame
);
6186 #if 0 /* I don't understand why this is needed, and it causes problems
6187 when the frame's old selected window has been deleted. */
6188 if (f
!= selected_frame
&& FRAME_WINDOW_P (f
))
6189 do_switch_frame (WINDOW_FRAME (XWINDOW (data
->root_window
)),
6193 /* Set the screen height to the value it had before this function. */
6194 if (previous_frame_lines
!= FRAME_LINES (f
)
6195 || previous_frame_cols
!= FRAME_COLS (f
))
6196 change_frame_size (f
, previous_frame_lines
, previous_frame_cols
,
6198 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
6199 if (previous_frame_menu_bar_lines
!= FRAME_MENU_BAR_LINES (f
))
6200 x_set_menu_bar_lines (f
, make_number (previous_frame_menu_bar_lines
),
6202 #ifdef HAVE_WINDOW_SYSTEM
6203 if (previous_frame_tool_bar_lines
!= FRAME_TOOL_BAR_LINES (f
))
6204 x_set_tool_bar_lines (f
, make_number (previous_frame_tool_bar_lines
),
6209 /* Now, free glyph matrices in windows that were not reused. */
6210 for (i
= n
= 0; i
< n_leaf_windows
; ++i
)
6212 if (NILP (leaf_windows
[i
]->buffer
))
6214 /* Assert it's not reused as a combination. */
6215 xassert (NILP (leaf_windows
[i
]->hchild
)
6216 && NILP (leaf_windows
[i
]->vchild
));
6217 free_window_matrices (leaf_windows
[i
]);
6219 else if (EQ (leaf_windows
[i
]->buffer
, new_current_buffer
))
6227 /* Fselect_window will have made f the selected frame, so we
6228 reselect the proper frame here. Fhandle_switch_frame will change the
6229 selected window too, but that doesn't make the call to
6230 Fselect_window above totally superfluous; it still sets f's
6232 if (FRAME_LIVE_P (XFRAME (data
->selected_frame
)))
6233 do_switch_frame (data
->selected_frame
, 0, 0);
6235 run_window_configuration_change_hook (f
);
6238 if (!NILP (new_current_buffer
))
6239 Fset_buffer (new_current_buffer
);
6241 Vminibuf_scroll_window
= data
->minibuf_scroll_window
;
6242 minibuf_selected_window
= data
->minibuf_selected_window
;
6244 return (FRAME_LIVE_P (f
) ? Qt
: Qnil
);
6247 /* Mark all windows now on frame as deleted
6248 by setting their buffers to nil. */
6251 delete_all_subwindows (w
)
6252 register struct window
*w
;
6254 if (!NILP (w
->next
))
6255 delete_all_subwindows (XWINDOW (w
->next
));
6256 if (!NILP (w
->vchild
))
6257 delete_all_subwindows (XWINDOW (w
->vchild
));
6258 if (!NILP (w
->hchild
))
6259 delete_all_subwindows (XWINDOW (w
->hchild
));
6261 w
->total_lines
= w
->buffer
; /* See Fset_window_configuration for excuse. */
6263 if (!NILP (w
->buffer
))
6266 /* We set all three of these fields to nil, to make sure that we can
6267 distinguish this dead window from any live window. Live leaf
6268 windows will have buffer set, and combination windows will have
6269 vchild or hchild set. */
6274 Vwindow_list
= Qnil
;
6278 count_windows (window
)
6279 register struct window
*window
;
6281 register int count
= 1;
6282 if (!NILP (window
->next
))
6283 count
+= count_windows (XWINDOW (window
->next
));
6284 if (!NILP (window
->vchild
))
6285 count
+= count_windows (XWINDOW (window
->vchild
));
6286 if (!NILP (window
->hchild
))
6287 count
+= count_windows (XWINDOW (window
->hchild
));
6292 /* Fill vector FLAT with leaf windows under W, starting at index I.
6293 Value is last index + 1. */
6296 get_leaf_windows (w
, flat
, i
)
6298 struct window
**flat
;
6303 if (!NILP (w
->hchild
))
6304 i
= get_leaf_windows (XWINDOW (w
->hchild
), flat
, i
);
6305 else if (!NILP (w
->vchild
))
6306 i
= get_leaf_windows (XWINDOW (w
->vchild
), flat
, i
);
6310 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6317 /* Return a pointer to the glyph W's physical cursor is on. Value is
6318 null if W's current matrix is invalid, so that no meaningfull glyph
6322 get_phys_cursor_glyph (w
)
6325 struct glyph_row
*row
;
6326 struct glyph
*glyph
;
6328 if (w
->phys_cursor
.vpos
>= 0
6329 && w
->phys_cursor
.vpos
< w
->current_matrix
->nrows
6330 && (row
= MATRIX_ROW (w
->current_matrix
, w
->phys_cursor
.vpos
),
6332 && row
->used
[TEXT_AREA
] > w
->phys_cursor
.hpos
)
6333 glyph
= row
->glyphs
[TEXT_AREA
] + w
->phys_cursor
.hpos
;
6342 save_window_save (window
, vector
, i
)
6344 struct Lisp_Vector
*vector
;
6347 register struct saved_window
*p
;
6348 register struct window
*w
;
6349 register Lisp_Object tem
;
6351 for (;!NILP (window
); window
= w
->next
)
6353 p
= SAVED_WINDOW_N (vector
, i
);
6354 w
= XWINDOW (window
);
6356 XSETFASTINT (w
->temslot
, i
); i
++;
6358 p
->buffer
= w
->buffer
;
6359 p
->left_col
= w
->left_col
;
6360 p
->top_line
= w
->top_line
;
6361 p
->total_cols
= w
->total_cols
;
6362 p
->total_lines
= w
->total_lines
;
6363 p
->hscroll
= w
->hscroll
;
6364 p
->min_hscroll
= w
->min_hscroll
;
6365 p
->display_table
= w
->display_table
;
6366 p
->orig_top_line
= w
->orig_top_line
;
6367 p
->orig_total_lines
= w
->orig_total_lines
;
6368 p
->left_margin_cols
= w
->left_margin_cols
;
6369 p
->right_margin_cols
= w
->right_margin_cols
;
6370 p
->left_fringe_width
= w
->left_fringe_width
;
6371 p
->right_fringe_width
= w
->right_fringe_width
;
6372 p
->fringes_outside_margins
= w
->fringes_outside_margins
;
6373 p
->scroll_bar_width
= w
->scroll_bar_width
;
6374 p
->vertical_scroll_bar_type
= w
->vertical_scroll_bar_type
;
6375 p
->dedicated
= w
->dedicated
;
6376 p
->resize_proportionally
= w
->resize_proportionally
;
6377 if (!NILP (w
->buffer
))
6379 /* Save w's value of point in the window configuration.
6380 If w is the selected window, then get the value of point
6381 from the buffer; pointm is garbage in the selected window. */
6382 if (EQ (window
, selected_window
))
6384 p
->pointm
= Fmake_marker ();
6385 set_marker_both (p
->pointm
, w
->buffer
,
6386 BUF_PT (XBUFFER (w
->buffer
)),
6387 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6390 p
->pointm
= Fcopy_marker (w
->pointm
, Qnil
);
6392 p
->start
= Fcopy_marker (w
->start
, Qnil
);
6393 p
->start_at_line_beg
= w
->start_at_line_beg
;
6395 tem
= XBUFFER (w
->buffer
)->mark
;
6396 p
->mark
= Fcopy_marker (tem
, Qnil
);
6403 p
->start_at_line_beg
= Qnil
;
6406 if (NILP (w
->parent
))
6409 p
->parent
= XWINDOW (w
->parent
)->temslot
;
6414 p
->prev
= XWINDOW (w
->prev
)->temslot
;
6416 if (!NILP (w
->vchild
))
6417 i
= save_window_save (w
->vchild
, vector
, i
);
6418 if (!NILP (w
->hchild
))
6419 i
= save_window_save (w
->hchild
, vector
, i
);
6425 DEFUN ("current-window-configuration", Fcurrent_window_configuration
,
6426 Scurrent_window_configuration
, 0, 1, 0,
6427 doc
: /* Return an object representing the current window configuration of FRAME.
6428 If FRAME is nil or omitted, use the selected frame.
6429 This describes the number of windows, their sizes and current buffers,
6430 and for each displayed buffer, where display starts, and the positions of
6431 point and mark. An exception is made for point in the current buffer:
6432 its value is -not- saved.
6433 This also records the currently selected frame, and FRAME's focus
6434 redirection (see `redirect-frame-focus'). */)
6438 register Lisp_Object tem
;
6439 register int n_windows
;
6440 register struct save_window_data
*data
;
6445 frame
= selected_frame
;
6446 CHECK_LIVE_FRAME (frame
);
6449 n_windows
= count_windows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6450 data
= ALLOCATE_PSEUDOVECTOR (struct save_window_data
, frame_cols
,
6451 PVEC_WINDOW_CONFIGURATION
);
6453 data
->frame_cols
= FRAME_COLS (f
);
6454 data
->frame_lines
= FRAME_LINES (f
);
6455 data
->frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
6456 data
->frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
6457 data
->selected_frame
= selected_frame
;
6458 data
->current_window
= FRAME_SELECTED_WINDOW (f
);
6459 XSETBUFFER (data
->current_buffer
, current_buffer
);
6460 data
->minibuf_scroll_window
= minibuf_level
> 0 ? Vminibuf_scroll_window
: Qnil
;
6461 data
->minibuf_selected_window
= minibuf_level
> 0 ? minibuf_selected_window
: Qnil
;
6462 data
->root_window
= FRAME_ROOT_WINDOW (f
);
6463 data
->focus_frame
= FRAME_FOCUS_FRAME (f
);
6464 tem
= Fmake_vector (make_number (n_windows
), Qnil
);
6465 data
->saved_windows
= tem
;
6466 for (i
= 0; i
< n_windows
; i
++)
6467 XVECTOR (tem
)->contents
[i
]
6468 = Fmake_vector (make_number (VECSIZE (struct saved_window
)), Qnil
);
6469 save_window_save (FRAME_ROOT_WINDOW (f
), XVECTOR (tem
), 0);
6470 XSETWINDOW_CONFIGURATION (tem
, data
);
6474 DEFUN ("save-window-excursion", Fsave_window_excursion
, Ssave_window_excursion
,
6476 doc
: /* Execute BODY, preserving window sizes and contents.
6477 Return the value of the last form in BODY.
6478 Restore which buffer appears in which window, where display starts,
6479 and the value of point and mark for each window.
6480 Also restore the choice of selected window.
6481 Also restore which buffer is current.
6482 Does not restore the value of point in current buffer.
6483 usage: (save-window-excursion BODY...) */)
6487 register Lisp_Object val
;
6488 register int count
= SPECPDL_INDEX ();
6490 record_unwind_protect (Fset_window_configuration
,
6491 Fcurrent_window_configuration (Qnil
));
6492 val
= Fprogn (args
);
6493 return unbind_to (count
, val
);
6498 /***********************************************************************
6500 ***********************************************************************/
6506 Lisp_Object tail
= Qnil
;
6507 Lisp_Object result
= Qnil
;
6514 if (!NILP (w
->hchild
))
6515 wn
= Fcons (Qnil
, Fcons (Fwindow_edges (wn
),
6516 window_tree (XWINDOW (w
->hchild
))));
6517 else if (!NILP (w
->vchild
))
6518 wn
= Fcons (Qt
, Fcons (Fwindow_edges (wn
),
6519 window_tree (XWINDOW (w
->vchild
))));
6523 result
= tail
= Fcons (wn
, Qnil
);
6527 XSETCDR (tail
, Fcons (wn
, Qnil
));
6531 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6539 DEFUN ("window-tree", Fwindow_tree
, Swindow_tree
,
6541 doc
: /* Return the window tree for frame FRAME.
6543 The return value is a list of the form (ROOT MINI), where ROOT
6544 represents the window tree of the frame's root window, and MINI
6545 is the frame's minibuffer window.
6547 If the root window is not split, ROOT is the root window itself.
6548 Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a
6549 horizontal split, and t for a vertical split, EDGES gives the combined
6550 size and position of the subwindows in the split, and the rest of the
6551 elements are the subwindows in the split. Each of the subwindows may
6552 again be a window or a list representing a window split, and so on.
6553 EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'.
6555 If FRAME is nil or omitted, return information on the currently
6563 frame
= selected_frame
;
6565 CHECK_FRAME (frame
);
6568 if (!FRAME_LIVE_P (f
))
6571 return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6575 /***********************************************************************
6577 ***********************************************************************/
6579 DEFUN ("set-window-margins", Fset_window_margins
, Sset_window_margins
,
6581 doc
: /* Set width of marginal areas of window WINDOW.
6582 If WINDOW is nil, set margins of the currently selected window.
6583 Second arg LEFT-WIDTH specifies the number of character cells to
6584 reserve for the left marginal area. Optional third arg RIGHT-WIDTH
6585 does the same for the right marginal area. A nil width parameter
6586 means no margin. */)
6587 (window
, left_width
, right_width
)
6588 Lisp_Object window
, left_width
, right_width
;
6590 struct window
*w
= decode_window (window
);
6592 /* Translate negative or zero widths to nil.
6593 Margins that are too wide have to be checked elsewhere. */
6595 if (!NILP (left_width
))
6597 CHECK_NUMBER (left_width
);
6598 if (XINT (left_width
) <= 0)
6602 if (!NILP (right_width
))
6604 CHECK_NUMBER (right_width
);
6605 if (XINT (right_width
) <= 0)
6609 if (!EQ (w
->left_margin_cols
, left_width
)
6610 || !EQ (w
->right_margin_cols
, right_width
))
6612 w
->left_margin_cols
= left_width
;
6613 w
->right_margin_cols
= right_width
;
6615 adjust_window_margins (w
);
6617 ++windows_or_buffers_changed
;
6618 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6625 DEFUN ("window-margins", Fwindow_margins
, Swindow_margins
,
6627 doc
: /* Get width of marginal areas of window WINDOW.
6628 If WINDOW is omitted or nil, use the currently selected window.
6629 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
6630 If a marginal area does not exist, its width will be returned
6635 struct window
*w
= decode_window (window
);
6636 return Fcons (w
->left_margin_cols
, w
->right_margin_cols
);
6641 /***********************************************************************
6643 ***********************************************************************/
6645 DEFUN ("set-window-fringes", Fset_window_fringes
, Sset_window_fringes
,
6647 doc
: /* Set the fringe widths of window WINDOW.
6648 If WINDOW is nil, set the fringe widths of the currently selected
6650 Second arg LEFT-WIDTH specifies the number of pixels to reserve for
6651 the left fringe. Optional third arg RIGHT-WIDTH specifies the right
6652 fringe width. If a fringe width arg is nil, that means to use the
6653 frame's default fringe width. Default fringe widths can be set with
6654 the command `set-fringe-style'.
6655 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
6656 outside of the display margins. By default, fringes are drawn between
6657 display marginal areas and the text area. */)
6658 (window
, left_width
, right_width
, outside_margins
)
6659 Lisp_Object window
, left_width
, right_width
, outside_margins
;
6661 struct window
*w
= decode_window (window
);
6663 if (!NILP (left_width
))
6664 CHECK_NATNUM (left_width
);
6665 if (!NILP (right_width
))
6666 CHECK_NATNUM (right_width
);
6668 /* Do nothing on a tty. */
6669 if (FRAME_WINDOW_P (WINDOW_XFRAME (w
))
6670 && (!EQ (w
->left_fringe_width
, left_width
)
6671 || !EQ (w
->right_fringe_width
, right_width
)
6672 || !EQ (w
->fringes_outside_margins
, outside_margins
)))
6674 w
->left_fringe_width
= left_width
;
6675 w
->right_fringe_width
= right_width
;
6676 w
->fringes_outside_margins
= outside_margins
;
6678 adjust_window_margins (w
);
6680 clear_glyph_matrix (w
->current_matrix
);
6681 w
->window_end_valid
= Qnil
;
6683 ++windows_or_buffers_changed
;
6684 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6691 DEFUN ("window-fringes", Fwindow_fringes
, Swindow_fringes
,
6693 doc
: /* Get width of fringes of window WINDOW.
6694 If WINDOW is omitted or nil, use the currently selected window.
6695 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */)
6699 struct window
*w
= decode_window (window
);
6701 return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w
)),
6702 Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w
)),
6703 Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
6704 ? Qt
: Qnil
), Qnil
)));
6709 /***********************************************************************
6711 ***********************************************************************/
6713 DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars
, Sset_window_scroll_bars
,
6715 doc
: /* Set width and type of scroll bars of window WINDOW.
6716 If window is nil, set scroll bars of the currently selected window.
6717 Second parameter WIDTH specifies the pixel width for the scroll bar;
6718 this is automatically adjusted to a multiple of the frame column width.
6719 Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
6720 bar: left, right, or nil.
6721 If WIDTH is nil, use the frame's scroll-bar width.
6722 If VERTICAL-TYPE is t, use the frame's scroll-bar type.
6723 Fourth parameter HORIZONTAL-TYPE is currently unused. */)
6724 (window
, width
, vertical_type
, horizontal_type
)
6725 Lisp_Object window
, width
, vertical_type
, horizontal_type
;
6727 struct window
*w
= decode_window (window
);
6731 CHECK_NATNUM (width
);
6733 if (XINT (width
) == 0)
6734 vertical_type
= Qnil
;
6737 if (!(NILP (vertical_type
)
6738 || EQ (vertical_type
, Qleft
)
6739 || EQ (vertical_type
, Qright
)
6740 || EQ (vertical_type
, Qt
)))
6741 error ("Invalid type of vertical scroll bar");
6743 if (!EQ (w
->scroll_bar_width
, width
)
6744 || !EQ (w
->vertical_scroll_bar_type
, vertical_type
))
6746 w
->scroll_bar_width
= width
;
6747 w
->vertical_scroll_bar_type
= vertical_type
;
6749 adjust_window_margins (w
);
6751 clear_glyph_matrix (w
->current_matrix
);
6752 w
->window_end_valid
= Qnil
;
6754 ++windows_or_buffers_changed
;
6755 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6762 DEFUN ("window-scroll-bars", Fwindow_scroll_bars
, Swindow_scroll_bars
,
6764 doc
: /* Get width and type of scroll bars of window WINDOW.
6765 If WINDOW is omitted or nil, use the currently selected window.
6766 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
6767 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
6772 struct window
*w
= decode_window (window
);
6773 return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6774 ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6775 : WINDOW_SCROLL_BAR_AREA_WIDTH (w
))),
6776 Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w
)),
6777 Fcons (w
->vertical_scroll_bar_type
,
6778 Fcons (Qnil
, Qnil
))));
6783 /***********************************************************************
6785 ***********************************************************************/
6787 DEFUN ("window-vscroll", Fwindow_vscroll
, Swindow_vscroll
, 0, 2, 0,
6788 doc
: /* Return the amount by which WINDOW is scrolled vertically.
6789 Use the selected window if WINDOW is nil or omitted.
6790 Normally, value is a multiple of the canonical character height of WINDOW;
6791 optional second arg PIXELS-P means value is measured in pixels. */)
6793 Lisp_Object window
, pixels_p
;
6800 window
= selected_window
;
6802 CHECK_WINDOW (window
);
6803 w
= XWINDOW (window
);
6804 f
= XFRAME (w
->frame
);
6806 if (FRAME_WINDOW_P (f
))
6807 result
= (NILP (pixels_p
)
6808 ? FRAME_CANON_Y_FROM_PIXEL_Y (f
, -w
->vscroll
)
6809 : make_number (-w
->vscroll
));
6811 result
= make_number (0);
6816 DEFUN ("set-window-vscroll", Fset_window_vscroll
, Sset_window_vscroll
,
6818 doc
: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
6819 WINDOW nil means use the selected window. Normally, VSCROLL is a
6820 non-negative multiple of the canonical character height of WINDOW;
6821 optional third arg PIXELS-P non-nil means that VSCROLL is in pixels.
6822 If PIXELS-P is nil, VSCROLL may have to be rounded so that it
6823 corresponds to an integral number of pixels. The return value is the
6824 result of this rounding.
6825 If PIXELS-P is non-nil, the return value is VSCROLL. */)
6826 (window
, vscroll
, pixels_p
)
6827 Lisp_Object window
, vscroll
, pixels_p
;
6833 window
= selected_window
;
6835 CHECK_WINDOW (window
);
6836 CHECK_NUMBER_OR_FLOAT (vscroll
);
6838 w
= XWINDOW (window
);
6839 f
= XFRAME (w
->frame
);
6841 if (FRAME_WINDOW_P (f
))
6843 int old_dy
= w
->vscroll
;
6845 w
->vscroll
= - (NILP (pixels_p
)
6846 ? FRAME_LINE_HEIGHT (f
) * XFLOATINT (vscroll
)
6847 : XFLOATINT (vscroll
));
6848 w
->vscroll
= min (w
->vscroll
, 0);
6850 if (w
->vscroll
!= old_dy
)
6852 /* Adjust glyph matrix of the frame if the virtual display
6853 area becomes larger than before. */
6854 if (w
->vscroll
< 0 && w
->vscroll
< old_dy
)
6857 /* Prevent redisplay shortcuts. */
6858 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
6862 return Fwindow_vscroll (window
, pixels_p
);
6866 /* Call FN for all leaf windows on frame F. FN is called with the
6867 first argument being a pointer to the leaf window, and with
6868 additional argument USER_DATA. Stops when FN returns 0. */
6871 foreach_window (f
, fn
, user_data
)
6873 int (* fn
) P_ ((struct window
*, void *));
6876 /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */
6877 if (WINDOWP (FRAME_ROOT_WINDOW (f
)))
6878 foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f
)), fn
, user_data
);
6882 /* Helper function for foreach_window. Call FN for all leaf windows
6883 reachable from W. FN is called with the first argument being a
6884 pointer to the leaf window, and with additional argument USER_DATA.
6885 Stop when FN returns 0. Value is 0 if stopped by FN. */
6888 foreach_window_1 (w
, fn
, user_data
)
6890 int (* fn
) P_ ((struct window
*, void *));
6895 for (cont
= 1; w
&& cont
;)
6897 if (!NILP (w
->hchild
))
6898 cont
= foreach_window_1 (XWINDOW (w
->hchild
), fn
, user_data
);
6899 else if (!NILP (w
->vchild
))
6900 cont
= foreach_window_1 (XWINDOW (w
->vchild
), fn
, user_data
);
6902 cont
= fn (w
, user_data
);
6904 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6911 /* Freeze or unfreeze the window start of W unless it is a
6912 mini-window or the selected window. FREEZE_P non-null means freeze
6913 the window start. */
6916 freeze_window_start (w
, freeze_p
)
6920 if (MINI_WINDOW_P (w
)
6921 || (WINDOWP (selected_window
) /* Can be nil in corner cases. */
6922 && (w
== XWINDOW (selected_window
)
6923 || (MINI_WINDOW_P (XWINDOW (selected_window
))
6924 && ! NILP (Vminibuf_scroll_window
)
6925 && w
== XWINDOW (Vminibuf_scroll_window
)))))
6928 w
->frozen_window_start_p
= freeze_p
!= NULL
;
6933 /* Freeze or unfreeze the window starts of all leaf windows on frame
6934 F, except the selected window and a mini-window. FREEZE_P non-zero
6935 means freeze the window start. */
6938 freeze_window_starts (f
, freeze_p
)
6942 foreach_window (f
, freeze_window_start
, (void *) (freeze_p
? f
: 0));
6946 /***********************************************************************
6948 ***********************************************************************/
6950 /* Return 1 if window configurations C1 and C2
6951 describe the same state of affairs. This is used by Fequal. */
6954 compare_window_configurations (c1
, c2
, ignore_positions
)
6956 int ignore_positions
;
6958 register struct save_window_data
*d1
, *d2
;
6959 struct Lisp_Vector
*sw1
, *sw2
;
6962 CHECK_WINDOW_CONFIGURATION (c1
);
6963 CHECK_WINDOW_CONFIGURATION (c2
);
6965 d1
= (struct save_window_data
*) XVECTOR (c1
);
6966 d2
= (struct save_window_data
*) XVECTOR (c2
);
6967 sw1
= XVECTOR (d1
->saved_windows
);
6968 sw2
= XVECTOR (d2
->saved_windows
);
6970 if (d1
->frame_cols
!= d2
->frame_cols
)
6972 if (d1
->frame_lines
!= d2
->frame_lines
)
6974 if (d1
->frame_menu_bar_lines
!= d2
->frame_menu_bar_lines
)
6976 if (! EQ (d1
->selected_frame
, d2
->selected_frame
))
6978 /* Don't compare the current_window field directly.
6979 Instead see w1_is_current and w2_is_current, below. */
6980 if (! EQ (d1
->current_buffer
, d2
->current_buffer
))
6982 if (! ignore_positions
)
6984 if (! EQ (d1
->minibuf_scroll_window
, d2
->minibuf_scroll_window
))
6986 if (! EQ (d1
->minibuf_selected_window
, d2
->minibuf_selected_window
))
6989 /* Don't compare the root_window field.
6990 We don't require the two configurations
6991 to use the same window object,
6992 and the two root windows must be equivalent
6993 if everything else compares equal. */
6994 if (! EQ (d1
->focus_frame
, d2
->focus_frame
))
6997 /* Verify that the two confis have the same number of windows. */
6998 if (sw1
->size
!= sw2
->size
)
7001 for (i
= 0; i
< sw1
->size
; i
++)
7003 struct saved_window
*p1
, *p2
;
7004 int w1_is_current
, w2_is_current
;
7006 p1
= SAVED_WINDOW_N (sw1
, i
);
7007 p2
= SAVED_WINDOW_N (sw2
, i
);
7009 /* Verify that the current windows in the two
7010 configurations correspond to each other. */
7011 w1_is_current
= EQ (d1
->current_window
, p1
->window
);
7012 w2_is_current
= EQ (d2
->current_window
, p2
->window
);
7014 if (w1_is_current
!= w2_is_current
)
7017 /* Verify that the corresponding windows do match. */
7018 if (! EQ (p1
->buffer
, p2
->buffer
))
7020 if (! EQ (p1
->left_col
, p2
->left_col
))
7022 if (! EQ (p1
->top_line
, p2
->top_line
))
7024 if (! EQ (p1
->total_cols
, p2
->total_cols
))
7026 if (! EQ (p1
->total_lines
, p2
->total_lines
))
7028 if (! EQ (p1
->display_table
, p2
->display_table
))
7030 if (! EQ (p1
->parent
, p2
->parent
))
7032 if (! EQ (p1
->prev
, p2
->prev
))
7034 if (! ignore_positions
)
7036 if (! EQ (p1
->hscroll
, p2
->hscroll
))
7038 if (!EQ (p1
->min_hscroll
, p2
->min_hscroll
))
7040 if (! EQ (p1
->start_at_line_beg
, p2
->start_at_line_beg
))
7042 if (NILP (Fequal (p1
->start
, p2
->start
)))
7044 if (NILP (Fequal (p1
->pointm
, p2
->pointm
)))
7046 if (NILP (Fequal (p1
->mark
, p2
->mark
)))
7049 if (! EQ (p1
->left_margin_cols
, p2
->left_margin_cols
))
7051 if (! EQ (p1
->right_margin_cols
, p2
->right_margin_cols
))
7053 if (! EQ (p1
->left_fringe_width
, p2
->left_fringe_width
))
7055 if (! EQ (p1
->right_fringe_width
, p2
->right_fringe_width
))
7057 if (! EQ (p1
->fringes_outside_margins
, p2
->fringes_outside_margins
))
7059 if (! EQ (p1
->scroll_bar_width
, p2
->scroll_bar_width
))
7061 if (! EQ (p1
->vertical_scroll_bar_type
, p2
->vertical_scroll_bar_type
))
7068 DEFUN ("compare-window-configurations", Fcompare_window_configurations
,
7069 Scompare_window_configurations
, 2, 2, 0,
7070 doc
: /* Compare two window configurations as regards the structure of windows.
7071 This function ignores details such as the values of point and mark
7072 and scrolling positions. */)
7076 if (compare_window_configurations (x
, y
, 1))
7084 struct frame
*f
= make_initial_frame ();
7085 XSETFRAME (selected_frame
, f
);
7086 Vterminal_frame
= selected_frame
;
7087 minibuf_window
= f
->minibuffer_window
;
7088 selected_window
= f
->selected_window
;
7089 last_nonminibuf_frame
= f
;
7091 window_initialized
= 1;
7097 Vwindow_list
= Qnil
;
7103 Qscroll_up
= intern ("scroll-up");
7104 staticpro (&Qscroll_up
);
7106 Qscroll_down
= intern ("scroll-down");
7107 staticpro (&Qscroll_down
);
7109 Qwindow_size_fixed
= intern ("window-size-fixed");
7110 staticpro (&Qwindow_size_fixed
);
7111 Fset (Qwindow_size_fixed
, Qnil
);
7113 staticpro (&Qwindow_configuration_change_hook
);
7114 Qwindow_configuration_change_hook
7115 = intern ("window-configuration-change-hook");
7117 Qwindowp
= intern ("windowp");
7118 staticpro (&Qwindowp
);
7120 Qwindow_configuration_p
= intern ("window-configuration-p");
7121 staticpro (&Qwindow_configuration_p
);
7123 Qwindow_live_p
= intern ("window-live-p");
7124 staticpro (&Qwindow_live_p
);
7126 Qdisplay_buffer
= intern ("display-buffer");
7127 staticpro (&Qdisplay_buffer
);
7129 Qtemp_buffer_show_hook
= intern ("temp-buffer-show-hook");
7130 staticpro (&Qtemp_buffer_show_hook
);
7132 staticpro (&Vwindow_list
);
7134 minibuf_selected_window
= Qnil
;
7135 staticpro (&minibuf_selected_window
);
7137 window_scroll_pixel_based_preserve_x
= -1;
7138 window_scroll_pixel_based_preserve_y
= -1;
7139 window_scroll_preserve_hpos
= -1;
7140 window_scroll_preserve_vpos
= -1;
7142 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function
,
7143 doc
: /* Non-nil means call as function to display a help buffer.
7144 The function is called with one argument, the buffer to be displayed.
7145 Used by `with-output-to-temp-buffer'.
7146 If this function is used, then it must do the entire job of showing
7147 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
7148 Vtemp_buffer_show_function
= Qnil
;
7150 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window
,
7151 doc
: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
7152 Vminibuf_scroll_window
= Qnil
;
7154 DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows
,
7155 doc
: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
7156 If the minibuffer is active, the `minibuffer-scroll-window' mode line
7157 is displayed in the `mode-line' face. */);
7158 mode_line_in_non_selected_windows
= 1;
7160 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer
,
7161 doc
: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */);
7162 Vother_window_scroll_buffer
= Qnil
;
7164 DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p
,
7165 doc
: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */);
7166 auto_window_vscroll_p
= 1;
7168 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines
,
7169 doc
: /* *Number of lines of continuity when scrolling by screenfuls. */);
7170 next_screen_context_lines
= 2;
7172 DEFVAR_INT ("window-min-height", &window_min_height
,
7173 doc
: /* Allow deleting windows less than this tall.
7174 The value is measured in line units. If a window wants a modeline it
7175 is counted as one line.
7177 Emacs honors settings of this variable when enlarging or shrinking
7178 windows vertically. A value less than 1 is invalid. */);
7179 window_min_height
= 4;
7181 DEFVAR_INT ("window-min-width", &window_min_width
,
7182 doc
: /* Allow deleting windows less than this wide.
7183 The value is measured in characters and includes any fringes or
7186 Emacs honors settings of this variable when enlarging or shrinking
7187 windows horizontally. A value less than 2 is invalid. */);
7188 window_min_width
= 10;
7190 DEFVAR_LISP ("scroll-preserve-screen-position",
7191 &Vscroll_preserve_screen_position
,
7192 doc
: /* *Controls if scroll commands move point to keep its screen position unchanged.
7193 A value of nil means point does not keep its screen position except
7194 at the scroll margin or window boundary respectively.
7195 A value of t means point keeps its screen position if the scroll
7196 command moved it vertically out of the window, e.g. when scrolling
7198 Any other value means point always keeps its screen position. */);
7199 Vscroll_preserve_screen_position
= Qnil
;
7201 DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type
,
7202 doc
: /* Type of marker to use for `window-point'. */);
7203 Vwindow_point_insertion_type
= Qnil
;
7205 DEFVAR_LISP ("window-configuration-change-hook",
7206 &Vwindow_configuration_change_hook
,
7207 doc
: /* Functions to call when window configuration changes.
7208 The buffer-local part is run once per window, with the relevant window
7209 selected; while the global part is run only once for the modified frame,
7210 with the relevant frame selected. */);
7211 Vwindow_configuration_change_hook
= Qnil
;
7213 defsubr (&Sselected_window
);
7214 defsubr (&Sminibuffer_window
);
7215 defsubr (&Swindow_minibuffer_p
);
7216 defsubr (&Swindowp
);
7217 defsubr (&Swindow_live_p
);
7218 defsubr (&Spos_visible_in_window_p
);
7219 defsubr (&Swindow_line_height
);
7220 defsubr (&Swindow_buffer
);
7221 defsubr (&Swindow_height
);
7222 defsubr (&Swindow_width
);
7223 defsubr (&Swindow_full_width_p
);
7224 defsubr (&Swindow_hscroll
);
7225 defsubr (&Sset_window_hscroll
);
7226 defsubr (&Swindow_redisplay_end_trigger
);
7227 defsubr (&Sset_window_redisplay_end_trigger
);
7228 defsubr (&Swindow_edges
);
7229 defsubr (&Swindow_pixel_edges
);
7230 defsubr (&Swindow_inside_edges
);
7231 defsubr (&Swindow_inside_pixel_edges
);
7232 defsubr (&Scoordinates_in_window_p
);
7233 defsubr (&Swindow_at
);
7234 defsubr (&Swindow_point
);
7235 defsubr (&Swindow_start
);
7236 defsubr (&Swindow_end
);
7237 defsubr (&Sset_window_point
);
7238 defsubr (&Sset_window_start
);
7239 defsubr (&Swindow_dedicated_p
);
7240 defsubr (&Sset_window_dedicated_p
);
7241 defsubr (&Swindow_display_table
);
7242 defsubr (&Sset_window_display_table
);
7243 defsubr (&Snext_window
);
7244 defsubr (&Sprevious_window
);
7245 defsubr (&Sother_window
);
7246 defsubr (&Sget_lru_window
);
7247 defsubr (&Sget_largest_window
);
7248 defsubr (&Sget_buffer_window
);
7249 defsubr (&Sdelete_other_windows
);
7250 defsubr (&Sdelete_windows_on
);
7251 defsubr (&Sreplace_buffer_in_windows
);
7252 defsubr (&Sdelete_window
);
7253 defsubr (&Sset_window_buffer
);
7254 defsubr (&Sselect_window
);
7255 defsubr (&Sforce_window_update
);
7256 defsubr (&Ssplit_window
);
7257 defsubr (&Senlarge_window
);
7258 defsubr (&Sshrink_window
);
7259 defsubr (&Sadjust_window_trailing_edge
);
7260 defsubr (&Sscroll_up
);
7261 defsubr (&Sscroll_down
);
7262 defsubr (&Sscroll_left
);
7263 defsubr (&Sscroll_right
);
7264 defsubr (&Sother_window_for_scrolling
);
7265 defsubr (&Sscroll_other_window
);
7266 defsubr (&Sminibuffer_selected_window
);
7267 defsubr (&Srecenter
);
7268 defsubr (&Swindow_text_height
);
7269 defsubr (&Smove_to_window_line
);
7270 defsubr (&Swindow_configuration_p
);
7271 defsubr (&Swindow_configuration_frame
);
7272 defsubr (&Sset_window_configuration
);
7273 defsubr (&Scurrent_window_configuration
);
7274 defsubr (&Ssave_window_excursion
);
7275 defsubr (&Swindow_tree
);
7276 defsubr (&Sset_window_margins
);
7277 defsubr (&Swindow_margins
);
7278 defsubr (&Sset_window_fringes
);
7279 defsubr (&Swindow_fringes
);
7280 defsubr (&Sset_window_scroll_bars
);
7281 defsubr (&Swindow_scroll_bars
);
7282 defsubr (&Swindow_vscroll
);
7283 defsubr (&Sset_window_vscroll
);
7284 defsubr (&Scompare_window_configurations
);
7285 defsubr (&Swindow_list
);
7286 defsubr (&Swindow_parameters
);
7287 defsubr (&Swindow_parameter
);
7288 defsubr (&Sset_window_parameter
);
7295 initial_define_key (control_x_map
, '1', "delete-other-windows");
7296 initial_define_key (control_x_map
, '2', "split-window");
7297 initial_define_key (control_x_map
, '0', "delete-window");
7298 initial_define_key (control_x_map
, 'o', "other-window");
7299 initial_define_key (control_x_map
, '^', "enlarge-window");
7300 initial_define_key (control_x_map
, '<', "scroll-left");
7301 initial_define_key (control_x_map
, '>', "scroll-right");
7303 initial_define_key (global_map
, Ctl ('V'), "scroll-up");
7304 initial_define_key (meta_map
, Ctl ('V'), "scroll-other-window");
7305 initial_define_key (meta_map
, 'v', "scroll-down");
7307 initial_define_key (global_map
, Ctl('L'), "recenter");
7308 initial_define_key (meta_map
, 'r', "move-to-window-line");
7311 /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f
7312 (do not change this comment) */